/build/llvm-toolchain-snapshot-9~svn362543/include/llvm/ADT/SmallBitVector.h

Bug Summary

File:	include/llvm/ADT/SmallBitVector.h
Warning:	line 120, column 3 Potential memory leak

Annotated Source Code

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clang -cc1 -triple x86_64-pc-linux-gnu -analyze -disable-free -disable-llvm-verifier -discard-value-names -main-file-name SemaChecking.cpp -analyzer-store=region -analyzer-opt-analyze-nested-blocks -analyzer-checker=core -analyzer-checker=apiModeling -analyzer-checker=unix -analyzer-checker=deadcode -analyzer-checker=cplusplus -analyzer-checker=security.insecureAPI.UncheckedReturn -analyzer-checker=security.insecureAPI.getpw -analyzer-checker=security.insecureAPI.gets -analyzer-checker=security.insecureAPI.mktemp -analyzer-checker=security.insecureAPI.mkstemp -analyzer-checker=security.insecureAPI.vfork -analyzer-checker=nullability.NullPassedToNonnull -analyzer-checker=nullability.NullReturnedFromNonnull -analyzer-output plist -w -analyzer-config-compatibility-mode=true -mrelocation-model pic -pic-level 2 -mthread-model posix -relaxed-aliasing -fmath-errno -masm-verbose -mconstructor-aliases -munwind-tables -fuse-init-array -target-cpu x86-64 -dwarf-column-info -debugger-tuning=gdb -momit-leaf-frame-pointer -ffunction-sections -fdata-sections -resource-dir /usr/lib/llvm-9/lib/clang/9.0.0 -D CLANG_VENDOR="Debian " -D _DEBUG -D _GNU_SOURCE -D __STDC_CONSTANT_MACROS -D __STDC_FORMAT_MACROS -D __STDC_LIMIT_MACROS -I /build/llvm-toolchain-snapshot-9~svn362543/build-llvm/tools/clang/lib/Sema -I /build/llvm-toolchain-snapshot-9~svn362543/tools/clang/lib/Sema -I /build/llvm-toolchain-snapshot-9~svn362543/tools/clang/include -I /build/llvm-toolchain-snapshot-9~svn362543/build-llvm/tools/clang/include -I /build/llvm-toolchain-snapshot-9~svn362543/build-llvm/include -I /build/llvm-toolchain-snapshot-9~svn362543/include -U NDEBUG -internal-isystem /usr/lib/gcc/x86_64-linux-gnu/6.3.0/../../../../include/c++/6.3.0 -internal-isystem /usr/lib/gcc/x86_64-linux-gnu/6.3.0/../../../../include/x86_64-linux-gnu/c++/6.3.0 -internal-isystem /usr/lib/gcc/x86_64-linux-gnu/6.3.0/../../../../include/x86_64-linux-gnu/c++/6.3.0 -internal-isystem /usr/lib/gcc/x86_64-linux-gnu/6.3.0/../../../../include/c++/6.3.0/backward -internal-isystem /usr/include/clang/9.0.0/include/ -internal-isystem /usr/local/include -internal-isystem /usr/lib/llvm-9/lib/clang/9.0.0/include -internal-externc-isystem /usr/include/x86_64-linux-gnu -internal-externc-isystem /include -internal-externc-isystem /usr/include -O2 -Wno-unused-parameter -Wwrite-strings -Wno-missing-field-initializers -Wno-long-long -Wno-maybe-uninitialized -Wno-comment -std=c++11 -fdeprecated-macro -fdebug-compilation-dir /build/llvm-toolchain-snapshot-9~svn362543/build-llvm/tools/clang/lib/Sema -fdebug-prefix-map=/build/llvm-toolchain-snapshot-9~svn362543=. -ferror-limit 19 -fmessage-length 0 -fvisibility-inlines-hidden -stack-protector 2 -fobjc-runtime=gcc -fno-common -fdiagnostics-show-option -vectorize-loops -vectorize-slp -analyzer-output=html -analyzer-config stable-report-filename=true -o /tmp/scan-build-2019-06-05-060531-1271-1 -x c++ /build/llvm-toolchain-snapshot-9~svn362543/tools/clang/lib/Sema/SemaChecking.cpp -faddrsig

/build/llvm-toolchain-snapshot-9~svn362543/tools/clang/lib/Sema/SemaChecking.cpp

→

1//===- SemaChecking.cpp - Extra Semantic Checking -------------------------===//
2//
3// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4// See https://llvm.org/LICENSE.txt for license information.
5// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6//
7//===----------------------------------------------------------------------===//
8//
9//  This file implements extra semantic analysis beyond what is enforced
10//  by the C type system.
11//
12//===----------------------------------------------------------------------===//

14#include "clang/AST/APValue.h"
15#include "clang/AST/ASTContext.h"
16#include "clang/AST/Attr.h"
17#include "clang/AST/AttrIterator.h"
18#include "clang/AST/CharUnits.h"
19#include "clang/AST/Decl.h"
20#include "clang/AST/DeclBase.h"
21#include "clang/AST/DeclCXX.h"
22#include "clang/AST/DeclObjC.h"
23#include "clang/AST/DeclarationName.h"
24#include "clang/AST/EvaluatedExprVisitor.h"
25#include "clang/AST/Expr.h"
26#include "clang/AST/ExprCXX.h"
27#include "clang/AST/ExprObjC.h"
28#include "clang/AST/ExprOpenMP.h"
29#include "clang/AST/FormatString.h"
30#include "clang/AST/NSAPI.h"
31#include "clang/AST/NonTrivialTypeVisitor.h"
32#include "clang/AST/OperationKinds.h"
33#include "clang/AST/Stmt.h"
34#include "clang/AST/TemplateBase.h"
35#include "clang/AST/Type.h"
36#include "clang/AST/TypeLoc.h"
37#include "clang/AST/UnresolvedSet.h"
38#include "clang/Basic/AddressSpaces.h"
39#include "clang/Basic/CharInfo.h"
40#include "clang/Basic/Diagnostic.h"
41#include "clang/Basic/IdentifierTable.h"
42#include "clang/Basic/LLVM.h"
43#include "clang/Basic/LangOptions.h"
44#include "clang/Basic/OpenCLOptions.h"
45#include "clang/Basic/OperatorKinds.h"
46#include "clang/Basic/PartialDiagnostic.h"
47#include "clang/Basic/SourceLocation.h"
48#include "clang/Basic/SourceManager.h"
49#include "clang/Basic/Specifiers.h"
50#include "clang/Basic/SyncScope.h"
51#include "clang/Basic/TargetBuiltins.h"
52#include "clang/Basic/TargetCXXABI.h"
53#include "clang/Basic/TargetInfo.h"
54#include "clang/Basic/TypeTraits.h"
55#include "clang/Lex/Lexer.h" // TODO: Extract static functions to fix layering.
56#include "clang/Sema/Initialization.h"
57#include "clang/Sema/Lookup.h"
58#include "clang/Sema/Ownership.h"
59#include "clang/Sema/Scope.h"
60#include "clang/Sema/ScopeInfo.h"
61#include "clang/Sema/Sema.h"
62#include "clang/Sema/SemaInternal.h"
63#include "llvm/ADT/APFloat.h"
64#include "llvm/ADT/APInt.h"
65#include "llvm/ADT/APSInt.h"
66#include "llvm/ADT/ArrayRef.h"
67#include "llvm/ADT/DenseMap.h"
68#include "llvm/ADT/FoldingSet.h"
69#include "llvm/ADT/None.h"
70#include "llvm/ADT/Optional.h"
71#include "llvm/ADT/STLExtras.h"
72#include "llvm/ADT/SmallBitVector.h"
73#include "llvm/ADT/SmallPtrSet.h"
74#include "llvm/ADT/SmallString.h"
75#include "llvm/ADT/SmallVector.h"
76#include "llvm/ADT/StringRef.h"
77#include "llvm/ADT/StringSwitch.h"
78#include "llvm/ADT/Triple.h"
79#include "llvm/Support/AtomicOrdering.h"
80#include "llvm/Support/Casting.h"
81#include "llvm/Support/Compiler.h"
82#include "llvm/Support/ConvertUTF.h"
83#include "llvm/Support/ErrorHandling.h"
84#include "llvm/Support/Format.h"
85#include "llvm/Support/Locale.h"
86#include "llvm/Support/MathExtras.h"
87#include "llvm/Support/raw_ostream.h"
88#include <algorithm>
89#include <cassert>
90#include <cstddef>
91#include <cstdint>
92#include <functional>
93#include <limits>
94#include <string>
95#include <tuple>
96#include <utility>

98using namespace clang;
99using namespace sema;

101SourceLocation Sema::getLocationOfStringLiteralByte(const StringLiteral *SL,
                                                  unsigned ByteNo) const {
return SL->getLocationOfByte(ByteNo, getSourceManager(), LangOpts,
                             Context.getTargetInfo());
105}

107/// Checks that a call expression's argument count is the desired number.
108/// This is useful when doing custom type-checking.  Returns true on error.
109static bool checkArgCount(Sema &S, CallExpr *call, unsigned desiredArgCount) {
unsigned argCount = call->getNumArgs();
if (argCount == desiredArgCount) return false;

if (argCount < desiredArgCount)
  return S.Diag(call->getEndLoc(), diag::err_typecheck_call_too_few_args)
         << 0 /*function call*/ << desiredArgCount << argCount
         << call->getSourceRange();

// Highlight all the excess arguments.
SourceRange range(call->getArg(desiredArgCount)->getBeginLoc(),
                  call->getArg(argCount - 1)->getEndLoc());

return S.Diag(range.getBegin(), diag::err_typecheck_call_too_many_args)
  << 0 /*function call*/ << desiredArgCount << argCount
  << call->getArg(1)->getSourceRange();
125}

127/// Check that the first argument to __builtin_annotation is an integer
128/// and the second argument is a non-wide string literal.
129static bool SemaBuiltinAnnotation(Sema &S, CallExpr *TheCall) {
if (checkArgCount(S, TheCall, 2))
  return true;

// First argument should be an integer.
Expr *ValArg = TheCall->getArg(0);
QualType Ty = ValArg->getType();
if (!Ty->isIntegerType()) {
  S.Diag(ValArg->getBeginLoc(), diag::err_builtin_annotation_first_arg)
      << ValArg->getSourceRange();
  return true;
}

// Second argument should be a constant string.
Expr *StrArg = TheCall->getArg(1)->IgnoreParenCasts();
StringLiteral *Literal = dyn_cast<StringLiteral>(StrArg);
if (!Literal || !Literal->isAscii()) {
  S.Diag(StrArg->getBeginLoc(), diag::err_builtin_annotation_second_arg)
      << StrArg->getSourceRange();
  return true;
}

TheCall->setType(Ty);
return false;
153}

155static bool SemaBuiltinMSVCAnnotation(Sema &S, CallExpr *TheCall) {
// We need at least one argument.
if (TheCall->getNumArgs() < 1) {
  S.Diag(TheCall->getEndLoc(), diag::err_typecheck_call_too_few_args_at_least)
      << 0 << 1 << TheCall->getNumArgs()
      << TheCall->getCallee()->getSourceRange();
  return true;
}

// All arguments should be wide string literals.
for (Expr *Arg : TheCall->arguments()) {
  auto *Literal = dyn_cast<StringLiteral>(Arg->IgnoreParenCasts());
  if (!Literal || !Literal->isWide()) {
    S.Diag(Arg->getBeginLoc(), diag::err_msvc_annotation_wide_str)
        << Arg->getSourceRange();
    return true;
  }
}

return false;
175}

177/// Check that the argument to __builtin_addressof is a glvalue, and set the
178/// result type to the corresponding pointer type.
179static bool SemaBuiltinAddressof(Sema &S, CallExpr *TheCall) {
if (checkArgCount(S, TheCall, 1))
  return true;

ExprResult Arg(TheCall->getArg(0));
QualType ResultType = S.CheckAddressOfOperand(Arg, TheCall->getBeginLoc());
if (ResultType.isNull())
  return true;

TheCall->setArg(0, Arg.get());
TheCall->setType(ResultType);
return false;
191}

193static bool SemaBuiltinOverflow(Sema &S, CallExpr *TheCall) {
if (checkArgCount(S, TheCall, 3))
  return true;

// First two arguments should be integers.
for (unsigned I = 0; I < 2; ++I) {
  ExprResult Arg = TheCall->getArg(I);
  QualType Ty = Arg.get()->getType();
  if (!Ty->isIntegerType()) {
    S.Diag(Arg.get()->getBeginLoc(), diag::err_overflow_builtin_must_be_int)
        << Ty << Arg.get()->getSourceRange();
    return true;
  }
  InitializedEntity Entity = InitializedEntity::InitializeParameter(
      S.getASTContext(), Ty, /*consume*/ false);
  Arg = S.PerformCopyInitialization(Entity, SourceLocation(), Arg);
  if (Arg.isInvalid())
    return true;
  TheCall->setArg(I, Arg.get());
}

// Third argument should be a pointer to a non-const integer.
// IRGen correctly handles volatile, restrict, and address spaces, and
// the other qualifiers aren't possible.
{
  ExprResult Arg = TheCall->getArg(2);
  QualType Ty = Arg.get()->getType();
  const auto *PtrTy = Ty->getAs<PointerType>();
  if (!(PtrTy && PtrTy->getPointeeType()->isIntegerType() &&
        !PtrTy->getPointeeType().isConstQualified())) {
    S.Diag(Arg.get()->getBeginLoc(),
           diag::err_overflow_builtin_must_be_ptr_int)
        << Ty << Arg.get()->getSourceRange();
    return true;
  }
  InitializedEntity Entity = InitializedEntity::InitializeParameter(
      S.getASTContext(), Ty, /*consume*/ false);
  Arg = S.PerformCopyInitialization(Entity, SourceLocation(), Arg);
  if (Arg.isInvalid())
    return true;
  TheCall->setArg(2, Arg.get());
}
return false;
236}

238static bool SemaBuiltinCallWithStaticChain(Sema &S, CallExpr *BuiltinCall) {
if (checkArgCount(S, BuiltinCall, 2))
  return true;

SourceLocation BuiltinLoc = BuiltinCall->getBeginLoc();
Expr *Builtin = BuiltinCall->getCallee()->IgnoreImpCasts();
Expr *Call = BuiltinCall->getArg(0);
Expr *Chain = BuiltinCall->getArg(1);

if (Call->getStmtClass() != Stmt::CallExprClass) {
  S.Diag(BuiltinLoc, diag::err_first_argument_to_cwsc_not_call)
      << Call->getSourceRange();
  return true;
}

auto CE = cast<CallExpr>(Call);
if (CE->getCallee()->getType()->isBlockPointerType()) {
  S.Diag(BuiltinLoc, diag::err_first_argument_to_cwsc_block_call)
      << Call->getSourceRange();
  return true;
}

const Decl *TargetDecl = CE->getCalleeDecl();
if (const FunctionDecl *FD = dyn_cast_or_null<FunctionDecl>(TargetDecl))
  if (FD->getBuiltinID()) {
    S.Diag(BuiltinLoc, diag::err_first_argument_to_cwsc_builtin_call)
        << Call->getSourceRange();
    return true;
  }

if (isa<CXXPseudoDestructorExpr>(CE->getCallee()->IgnoreParens())) {
  S.Diag(BuiltinLoc, diag::err_first_argument_to_cwsc_pdtor_call)
      << Call->getSourceRange();
  return true;
}

ExprResult ChainResult = S.UsualUnaryConversions(Chain);
if (ChainResult.isInvalid())
  return true;
if (!ChainResult.get()->getType()->isPointerType()) {
  S.Diag(BuiltinLoc, diag::err_second_argument_to_cwsc_not_pointer)
      << Chain->getSourceRange();
  return true;
}

QualType ReturnTy = CE->getCallReturnType(S.Context);
QualType ArgTys[2] = { ReturnTy, ChainResult.get()->getType() };
QualType BuiltinTy = S.Context.getFunctionType(
    ReturnTy, ArgTys, FunctionProtoType::ExtProtoInfo());
QualType BuiltinPtrTy = S.Context.getPointerType(BuiltinTy);

Builtin =
    S.ImpCastExprToType(Builtin, BuiltinPtrTy, CK_BuiltinFnToFnPtr).get();

BuiltinCall->setType(CE->getType());
BuiltinCall->setValueKind(CE->getValueKind());
BuiltinCall->setObjectKind(CE->getObjectKind());
BuiltinCall->setCallee(Builtin);
BuiltinCall->setArg(1, ChainResult.get());

return false;
299}

301/// Check a call to BuiltinID for buffer overflows. If BuiltinID is a
302/// __builtin_*_chk function, then use the object size argument specified in the
303/// source. Otherwise, infer the object size using __builtin_object_size.
304void Sema::checkFortifiedBuiltinMemoryFunction(FunctionDecl *FD,
                                             CallExpr *TheCall) {
// FIXME: There are some more useful checks we could be doing here:
//  - Analyze the format string of sprintf to see how much of buffer is used.
//  - Evaluate strlen of strcpy arguments, use as object size.

if (TheCall->isValueDependent() || TheCall->isTypeDependent())
  return;

unsigned BuiltinID = FD->getBuiltinID(/*ConsiderWrappers=*/true);
if (!BuiltinID)
  return;

unsigned DiagID = 0;
bool IsChkVariant = false;
unsigned SizeIndex, ObjectIndex;
switch (BuiltinID) {
default:
  return;
case Builtin::BI__builtin___memcpy_chk:
case Builtin::BI__builtin___memmove_chk:
case Builtin::BI__builtin___memset_chk:
326//  case Builtin::BI__builtin___strlcat_chk:
327//  case Builtin::BI__builtin___strlcpy_chk:
case Builtin::BI__builtin___strncat_chk:
case Builtin::BI__builtin___strncpy_chk:
case Builtin::BI__builtin___stpncpy_chk:
case Builtin::BI__builtin___memccpy_chk: {
  DiagID = diag::warn_builtin_chk_overflow;
  IsChkVariant = true;
  SizeIndex = TheCall->getNumArgs() - 2;
  ObjectIndex = TheCall->getNumArgs() - 1;
  break;
}

case Builtin::BI__builtin___snprintf_chk:
case Builtin::BI__builtin___vsnprintf_chk: {
  DiagID = diag::warn_builtin_chk_overflow;
  IsChkVariant = true;
  SizeIndex = 1;
  ObjectIndex = 3;
  break;
}

case Builtin::BIstrncat:
case Builtin::BI__builtin_strncat:
case Builtin::BIstrncpy:
case Builtin::BI__builtin_strncpy:
case Builtin::BIstpncpy:
case Builtin::BI__builtin_stpncpy: {
  // Whether these functions overflow depends on the runtime strlen of the
  // string, not just the buffer size, so emitting the "always overflow"
  // diagnostic isn't quite right. We should still diagnose passing a buffer
  // size larger than the destination buffer though; this is a runtime abort
  // in _FORTIFY_SOURCE mode, and is quite suspicious otherwise.
  DiagID = diag::warn_fortify_source_size_mismatch;
  SizeIndex = TheCall->getNumArgs() - 1;
  ObjectIndex = 0;
  break;
}

case Builtin::BImemcpy:
case Builtin::BI__builtin_memcpy:
case Builtin::BImemmove:
case Builtin::BI__builtin_memmove:
case Builtin::BImemset:
case Builtin::BI__builtin_memset: {
  DiagID = diag::warn_fortify_source_overflow;
  SizeIndex = TheCall->getNumArgs() - 1;
  ObjectIndex = 0;
  break;
}
case Builtin::BIsnprintf:
case Builtin::BI__builtin_snprintf:
case Builtin::BIvsnprintf:
case Builtin::BI__builtin_vsnprintf: {
  DiagID = diag::warn_fortify_source_size_mismatch;
  SizeIndex = 1;
  ObjectIndex = 0;
  break;
}
}

llvm::APSInt ObjectSize;
// For __builtin___*_chk, the object size is explicitly provided by the caller
// (usually using __builtin_object_size). Use that value to check this call.
if (IsChkVariant) {
  Expr::EvalResult Result;
  Expr *SizeArg = TheCall->getArg(ObjectIndex);
  if (!SizeArg->EvaluateAsInt(Result, getASTContext()))
    return;
  ObjectSize = Result.Val.getInt();

// Otherwise, try to evaluate an imaginary call to __builtin_object_size.
} else {
  // If the parameter has a pass_object_size attribute, then we should use its
  // (potentially) more strict checking mode. Otherwise, conservatively assume
  // type 0.
  int BOSType = 0;
  if (const auto *POS =
          FD->getParamDecl(ObjectIndex)->getAttr<PassObjectSizeAttr>())
    BOSType = POS->getType();

  Expr *ObjArg = TheCall->getArg(ObjectIndex);
  uint64_t Result;
  if (!ObjArg->tryEvaluateObjectSize(Result, getASTContext(), BOSType))
    return;
  // Get the object size in the target's size_t width.
  const TargetInfo &TI = getASTContext().getTargetInfo();
  unsigned SizeTypeWidth = TI.getTypeWidth(TI.getSizeType());
  ObjectSize = llvm::APSInt::getUnsigned(Result).extOrTrunc(SizeTypeWidth);
}

// Evaluate the number of bytes of the object that this call will use.
Expr::EvalResult Result;
Expr *UsedSizeArg = TheCall->getArg(SizeIndex);
if (!UsedSizeArg->EvaluateAsInt(Result, getASTContext()))
  return;
llvm::APSInt UsedSize = Result.Val.getInt();

if (UsedSize.ule(ObjectSize))
  return;

StringRef FunctionName = getASTContext().BuiltinInfo.getName(BuiltinID);
// Skim off the details of whichever builtin was called to produce a better
// diagnostic, as it's unlikley that the user wrote the __builtin explicitly.
if (IsChkVariant) {
  FunctionName = FunctionName.drop_front(std::strlen("__builtin___"));
  FunctionName = FunctionName.drop_back(std::strlen("_chk"));
} else if (FunctionName.startswith("__builtin_")) {
  FunctionName = FunctionName.drop_front(std::strlen("__builtin_"));
}

DiagRuntimeBehavior(TheCall->getBeginLoc(), TheCall,
                    PDiag(DiagID)
                        << FunctionName << ObjectSize.toString(/*Radix=*/10)
                        << UsedSize.toString(/*Radix=*/10));
441}

443static bool SemaBuiltinSEHScopeCheck(Sema &SemaRef, CallExpr *TheCall,
                                   Scope::ScopeFlags NeededScopeFlags,
                                   unsigned DiagID) {
// Scopes aren't available during instantiation. Fortunately, builtin
// functions cannot be template args so they cannot be formed through template
// instantiation. Therefore checking once during the parse is sufficient.
if (SemaRef.inTemplateInstantiation())
  return false;

Scope *S = SemaRef.getCurScope();
while (S && !S->isSEHExceptScope())
  S = S->getParent();
if (!S || !(S->getFlags() & NeededScopeFlags)) {
  auto *DRE = cast<DeclRefExpr>(TheCall->getCallee()->IgnoreParenCasts());
  SemaRef.Diag(TheCall->getExprLoc(), DiagID)
      << DRE->getDecl()->getIdentifier();
  return true;
}

return false;
463}

465static inline bool isBlockPointer(Expr *Arg) {
return Arg->getType()->isBlockPointerType();
467}

469/// OpenCL C v2.0, s6.13.17.2 - Checks that the block parameters are all local
470/// void*, which is a requirement of device side enqueue.
471static bool checkOpenCLBlockArgs(Sema &S, Expr *BlockArg) {
const BlockPointerType *BPT =
    cast<BlockPointerType>(BlockArg->getType().getCanonicalType());
ArrayRef<QualType> Params =
    BPT->getPointeeType()->getAs<FunctionProtoType>()->getParamTypes();
unsigned ArgCounter = 0;
bool IllegalParams = false;
// Iterate through the block parameters until either one is found that is not
// a local void*, or the block is valid.
for (ArrayRef<QualType>::iterator I = Params.begin(), E = Params.end();
     I != E; ++I, ++ArgCounter) {
  if (!(*I)->isPointerType() || !(*I)->getPointeeType()->isVoidType() ||
      (*I)->getPointeeType().getQualifiers().getAddressSpace() !=
          LangAS::opencl_local) {
    // Get the location of the error. If a block literal has been passed
    // (BlockExpr) then we can point straight to the offending argument,
    // else we just point to the variable reference.
    SourceLocation ErrorLoc;
    if (isa<BlockExpr>(BlockArg)) {
      BlockDecl *BD = cast<BlockExpr>(BlockArg)->getBlockDecl();
      ErrorLoc = BD->getParamDecl(ArgCounter)->getBeginLoc();
    } else if (isa<DeclRefExpr>(BlockArg)) {
      ErrorLoc = cast<DeclRefExpr>(BlockArg)->getBeginLoc();
    }
    S.Diag(ErrorLoc,
           diag::err_opencl_enqueue_kernel_blocks_non_local_void_args);
    IllegalParams = true;
  }
}

return IllegalParams;
502}

504static bool checkOpenCLSubgroupExt(Sema &S, CallExpr *Call) {
if (!S.getOpenCLOptions().isEnabled("cl_khr_subgroups")) {
  S.Diag(Call->getBeginLoc(), diag::err_opencl_requires_extension)
      << 1 << Call->getDirectCallee() << "cl_khr_subgroups";
  return true;
}
return false;
511}

513static bool SemaOpenCLBuiltinNDRangeAndBlock(Sema &S, CallExpr *TheCall) {
if (checkArgCount(S, TheCall, 2))
  return true;

if (checkOpenCLSubgroupExt(S, TheCall))
  return true;

// First argument is an ndrange_t type.
Expr *NDRangeArg = TheCall->getArg(0);
if (NDRangeArg->getType().getUnqualifiedType().getAsString() != "ndrange_t") {
  S.Diag(NDRangeArg->getBeginLoc(), diag::err_opencl_builtin_expected_type)
      << TheCall->getDirectCallee() << "'ndrange_t'";
  return true;
}

Expr *BlockArg = TheCall->getArg(1);
if (!isBlockPointer(BlockArg)) {
  S.Diag(BlockArg->getBeginLoc(), diag::err_opencl_builtin_expected_type)
      << TheCall->getDirectCallee() << "block";
  return true;
}
return checkOpenCLBlockArgs(S, BlockArg);
535}

537/// OpenCL C v2.0, s6.13.17.6 - Check the argument to the
538/// get_kernel_work_group_size
539/// and get_kernel_preferred_work_group_size_multiple builtin functions.
540static bool SemaOpenCLBuiltinKernelWorkGroupSize(Sema &S, CallExpr *TheCall) {
if (checkArgCount(S, TheCall, 1))
  return true;

Expr *BlockArg = TheCall->getArg(0);
if (!isBlockPointer(BlockArg)) {
  S.Diag(BlockArg->getBeginLoc(), diag::err_opencl_builtin_expected_type)
      << TheCall->getDirectCallee() << "block";
  return true;
}
return checkOpenCLBlockArgs(S, BlockArg);
551}

553/// Diagnose integer type and any valid implicit conversion to it.
554static bool checkOpenCLEnqueueIntType(Sema &S, Expr *E,
                                    const QualType &IntType);

557static bool checkOpenCLEnqueueLocalSizeArgs(Sema &S, CallExpr *TheCall,
                                          unsigned Start, unsigned End) {
bool IllegalParams = false;
for (unsigned I = Start; I <= End; ++I)
  IllegalParams |= checkOpenCLEnqueueIntType(S, TheCall->getArg(I),
                                            S.Context.getSizeType());
return IllegalParams;
564}

566/// OpenCL v2.0, s6.13.17.1 - Check that sizes are provided for all
567/// 'local void*' parameter of passed block.
568static bool checkOpenCLEnqueueVariadicArgs(Sema &S, CallExpr *TheCall,
                                         Expr *BlockArg,
                                         unsigned NumNonVarArgs) {
const BlockPointerType *BPT =
    cast<BlockPointerType>(BlockArg->getType().getCanonicalType());
unsigned NumBlockParams =
    BPT->getPointeeType()->getAs<FunctionProtoType>()->getNumParams();
unsigned TotalNumArgs = TheCall->getNumArgs();

// For each argument passed to the block, a corresponding uint needs to
// be passed to describe the size of the local memory.
if (TotalNumArgs != NumBlockParams + NumNonVarArgs) {
  S.Diag(TheCall->getBeginLoc(),
         diag::err_opencl_enqueue_kernel_local_size_args);
  return true;
}

// Check that the sizes of the local memory are specified by integers.
return checkOpenCLEnqueueLocalSizeArgs(S, TheCall, NumNonVarArgs,
                                       TotalNumArgs - 1);
588}

590/// OpenCL C v2.0, s6.13.17 - Enqueue kernel function contains four different
591/// overload formats specified in Table 6.13.17.1.
592/// int enqueue_kernel(queue_t queue,
593///                    kernel_enqueue_flags_t flags,
594///                    const ndrange_t ndrange,
595///                    void (^block)(void))
596/// int enqueue_kernel(queue_t queue,
597///                    kernel_enqueue_flags_t flags,
598///                    const ndrange_t ndrange,
599///                    uint num_events_in_wait_list,
600///                    clk_event_t *event_wait_list,
601///                    clk_event_t *event_ret,
602///                    void (^block)(void))
603/// int enqueue_kernel(queue_t queue,
604///                    kernel_enqueue_flags_t flags,
605///                    const ndrange_t ndrange,
606///                    void (^block)(local void*, ...),
607///                    uint size0, ...)
608/// int enqueue_kernel(queue_t queue,
609///                    kernel_enqueue_flags_t flags,
610///                    const ndrange_t ndrange,
611///                    uint num_events_in_wait_list,
612///                    clk_event_t *event_wait_list,
613///                    clk_event_t *event_ret,
614///                    void (^block)(local void*, ...),
615///                    uint size0, ...)
616static bool SemaOpenCLBuiltinEnqueueKernel(Sema &S, CallExpr *TheCall) {
unsigned NumArgs = TheCall->getNumArgs();

if (NumArgs < 4) {
  S.Diag(TheCall->getBeginLoc(), diag::err_typecheck_call_too_few_args);
  return true;
}

Expr *Arg0 = TheCall->getArg(0);
Expr *Arg1 = TheCall->getArg(1);
Expr *Arg2 = TheCall->getArg(2);
Expr *Arg3 = TheCall->getArg(3);

// First argument always needs to be a queue_t type.
if (!Arg0->getType()->isQueueT()) {
  S.Diag(TheCall->getArg(0)->getBeginLoc(),
         diag::err_opencl_builtin_expected_type)
      << TheCall->getDirectCallee() << S.Context.OCLQueueTy;
  return true;
}

// Second argument always needs to be a kernel_enqueue_flags_t enum value.
if (!Arg1->getType()->isIntegerType()) {
  S.Diag(TheCall->getArg(1)->getBeginLoc(),
         diag::err_opencl_builtin_expected_type)
      << TheCall->getDirectCallee() << "'kernel_enqueue_flags_t' (i.e. uint)";
  return true;
}

// Third argument is always an ndrange_t type.
if (Arg2->getType().getUnqualifiedType().getAsString() != "ndrange_t") {
  S.Diag(TheCall->getArg(2)->getBeginLoc(),
         diag::err_opencl_builtin_expected_type)
      << TheCall->getDirectCallee() << "'ndrange_t'";
  return true;
}

// With four arguments, there is only one form that the function could be
// called in: no events and no variable arguments.
if (NumArgs == 4) {
  // check that the last argument is the right block type.
  if (!isBlockPointer(Arg3)) {
    S.Diag(Arg3->getBeginLoc(), diag::err_opencl_builtin_expected_type)
        << TheCall->getDirectCallee() << "block";
    return true;
  }
  // we have a block type, check the prototype
  const BlockPointerType *BPT =
      cast<BlockPointerType>(Arg3->getType().getCanonicalType());
  if (BPT->getPointeeType()->getAs<FunctionProtoType>()->getNumParams() > 0) {
    S.Diag(Arg3->getBeginLoc(),
           diag::err_opencl_enqueue_kernel_blocks_no_args);
    return true;
  }
  return false;
}
// we can have block + varargs.
if (isBlockPointer(Arg3))
  return (checkOpenCLBlockArgs(S, Arg3) ||
          checkOpenCLEnqueueVariadicArgs(S, TheCall, Arg3, 4));
// last two cases with either exactly 7 args or 7 args and varargs.
if (NumArgs >= 7) {
  // check common block argument.
  Expr *Arg6 = TheCall->getArg(6);
  if (!isBlockPointer(Arg6)) {
    S.Diag(Arg6->getBeginLoc(), diag::err_opencl_builtin_expected_type)
        << TheCall->getDirectCallee() << "block";
    return true;
  }
  if (checkOpenCLBlockArgs(S, Arg6))
    return true;

  // Forth argument has to be any integer type.
  if (!Arg3->getType()->isIntegerType()) {
    S.Diag(TheCall->getArg(3)->getBeginLoc(),
           diag::err_opencl_builtin_expected_type)
        << TheCall->getDirectCallee() << "integer";
    return true;
  }
  // check remaining common arguments.
  Expr *Arg4 = TheCall->getArg(4);
  Expr *Arg5 = TheCall->getArg(5);

  // Fifth argument is always passed as a pointer to clk_event_t.
  if (!Arg4->isNullPointerConstant(S.Context,
                                   Expr::NPC_ValueDependentIsNotNull) &&
      !Arg4->getType()->getPointeeOrArrayElementType()->isClkEventT()) {
    S.Diag(TheCall->getArg(4)->getBeginLoc(),
           diag::err_opencl_builtin_expected_type)
        << TheCall->getDirectCallee()
        << S.Context.getPointerType(S.Context.OCLClkEventTy);
    return true;
  }

  // Sixth argument is always passed as a pointer to clk_event_t.
  if (!Arg5->isNullPointerConstant(S.Context,
                                   Expr::NPC_ValueDependentIsNotNull) &&
      !(Arg5->getType()->isPointerType() &&
        Arg5->getType()->getPointeeType()->isClkEventT())) {
    S.Diag(TheCall->getArg(5)->getBeginLoc(),
           diag::err_opencl_builtin_expected_type)
        << TheCall->getDirectCallee()
        << S.Context.getPointerType(S.Context.OCLClkEventTy);
    return true;
  }

  if (NumArgs == 7)
    return false;

  return checkOpenCLEnqueueVariadicArgs(S, TheCall, Arg6, 7);
}

// None of the specific case has been detected, give generic error
S.Diag(TheCall->getBeginLoc(),
       diag::err_opencl_enqueue_kernel_incorrect_args);
return true;
732}

734/// Returns OpenCL access qual.
735static OpenCLAccessAttr *getOpenCLArgAccess(const Decl *D) {
  return D->getAttr<OpenCLAccessAttr>();
737}

739/// Returns true if pipe element type is different from the pointer.
740static bool checkOpenCLPipeArg(Sema &S, CallExpr *Call) {
const Expr *Arg0 = Call->getArg(0);
// First argument type should always be pipe.
if (!Arg0->getType()->isPipeType()) {
  S.Diag(Call->getBeginLoc(), diag::err_opencl_builtin_pipe_first_arg)
      << Call->getDirectCallee() << Arg0->getSourceRange();
  return true;
}
OpenCLAccessAttr *AccessQual =
    getOpenCLArgAccess(cast<DeclRefExpr>(Arg0)->getDecl());
// Validates the access qualifier is compatible with the call.
// OpenCL v2.0 s6.13.16 - The access qualifiers for pipe should only be
// read_only and write_only, and assumed to be read_only if no qualifier is
// specified.
switch (Call->getDirectCallee()->getBuiltinID()) {
case Builtin::BIread_pipe:
case Builtin::BIreserve_read_pipe:
case Builtin::BIcommit_read_pipe:
case Builtin::BIwork_group_reserve_read_pipe:
case Builtin::BIsub_group_reserve_read_pipe:
case Builtin::BIwork_group_commit_read_pipe:
case Builtin::BIsub_group_commit_read_pipe:
  if (!(!AccessQual || AccessQual->isReadOnly())) {
    S.Diag(Arg0->getBeginLoc(),
           diag::err_opencl_builtin_pipe_invalid_access_modifier)
        << "read_only" << Arg0->getSourceRange();
    return true;
  }
  break;
case Builtin::BIwrite_pipe:
case Builtin::BIreserve_write_pipe:
case Builtin::BIcommit_write_pipe:
case Builtin::BIwork_group_reserve_write_pipe:
case Builtin::BIsub_group_reserve_write_pipe:
case Builtin::BIwork_group_commit_write_pipe:
case Builtin::BIsub_group_commit_write_pipe:
  if (!(AccessQual && AccessQual->isWriteOnly())) {
    S.Diag(Arg0->getBeginLoc(),
           diag::err_opencl_builtin_pipe_invalid_access_modifier)
        << "write_only" << Arg0->getSourceRange();
    return true;
  }
  break;
default:
  break;
}
return false;
787}

789/// Returns true if pipe element type is different from the pointer.
790static bool checkOpenCLPipePacketType(Sema &S, CallExpr *Call, unsigned Idx) {
const Expr *Arg0 = Call->getArg(0);
const Expr *ArgIdx = Call->getArg(Idx);
const PipeType *PipeTy = cast<PipeType>(Arg0->getType());
const QualType EltTy = PipeTy->getElementType();
const PointerType *ArgTy = ArgIdx->getType()->getAs<PointerType>();
// The Idx argument should be a pointer and the type of the pointer and
// the type of pipe element should also be the same.
if (!ArgTy ||
    !S.Context.hasSameType(
        EltTy, ArgTy->getPointeeType()->getCanonicalTypeInternal())) {
  S.Diag(Call->getBeginLoc(), diag::err_opencl_builtin_pipe_invalid_arg)
      << Call->getDirectCallee() << S.Context.getPointerType(EltTy)
      << ArgIdx->getType() << ArgIdx->getSourceRange();
  return true;
}
return false;
807}

809// Performs semantic analysis for the read/write_pipe call.
810// \param S Reference to the semantic analyzer.
811// \param Call A pointer to the builtin call.
812// \return True if a semantic error has been found, false otherwise.
813static bool SemaBuiltinRWPipe(Sema &S, CallExpr *Call) {
// OpenCL v2.0 s6.13.16.2 - The built-in read/write
// functions have two forms.
switch (Call->getNumArgs()) {
case 2:
  if (checkOpenCLPipeArg(S, Call))
    return true;
  // The call with 2 arguments should be
  // read/write_pipe(pipe T, T*).
  // Check packet type T.
  if (checkOpenCLPipePacketType(S, Call, 1))
    return true;
  break;

case 4: {
  if (checkOpenCLPipeArg(S, Call))
    return true;
  // The call with 4 arguments should be
  // read/write_pipe(pipe T, reserve_id_t, uint, T*).
  // Check reserve_id_t.
  if (!Call->getArg(1)->getType()->isReserveIDT()) {
    S.Diag(Call->getBeginLoc(), diag::err_opencl_builtin_pipe_invalid_arg)
        << Call->getDirectCallee() << S.Context.OCLReserveIDTy
        << Call->getArg(1)->getType() << Call->getArg(1)->getSourceRange();
    return true;
  }

  // Check the index.
  const Expr *Arg2 = Call->getArg(2);
  if (!Arg2->getType()->isIntegerType() &&
      !Arg2->getType()->isUnsignedIntegerType()) {
    S.Diag(Call->getBeginLoc(), diag::err_opencl_builtin_pipe_invalid_arg)
        << Call->getDirectCallee() << S.Context.UnsignedIntTy
        << Arg2->getType() << Arg2->getSourceRange();
    return true;
  }

  // Check packet type T.
  if (checkOpenCLPipePacketType(S, Call, 3))
    return true;
} break;
default:
  S.Diag(Call->getBeginLoc(), diag::err_opencl_builtin_pipe_arg_num)
      << Call->getDirectCallee() << Call->getSourceRange();
  return true;
}

return false;
861}

863// Performs a semantic analysis on the {work_group_/sub_group_
864//        /_}reserve_{read/write}_pipe
865// \param S Reference to the semantic analyzer.
866// \param Call The call to the builtin function to be analyzed.
867// \return True if a semantic error was found, false otherwise.
868static bool SemaBuiltinReserveRWPipe(Sema &S, CallExpr *Call) {
if (checkArgCount(S, Call, 2))
  return true;

if (checkOpenCLPipeArg(S, Call))
  return true;

// Check the reserve size.
if (!Call->getArg(1)->getType()->isIntegerType() &&
    !Call->getArg(1)->getType()->isUnsignedIntegerType()) {
  S.Diag(Call->getBeginLoc(), diag::err_opencl_builtin_pipe_invalid_arg)
      << Call->getDirectCallee() << S.Context.UnsignedIntTy
      << Call->getArg(1)->getType() << Call->getArg(1)->getSourceRange();
  return true;
}

// Since return type of reserve_read/write_pipe built-in function is
// reserve_id_t, which is not defined in the builtin def file , we used int
// as return type and need to override the return type of these functions.
Call->setType(S.Context.OCLReserveIDTy);

return false;
890}

892// Performs a semantic analysis on {work_group_/sub_group_
893//        /_}commit_{read/write}_pipe
894// \param S Reference to the semantic analyzer.
895// \param Call The call to the builtin function to be analyzed.
896// \return True if a semantic error was found, false otherwise.
897static bool SemaBuiltinCommitRWPipe(Sema &S, CallExpr *Call) {
if (checkArgCount(S, Call, 2))
  return true;

if (checkOpenCLPipeArg(S, Call))
  return true;

// Check reserve_id_t.
if (!Call->getArg(1)->getType()->isReserveIDT()) {
  S.Diag(Call->getBeginLoc(), diag::err_opencl_builtin_pipe_invalid_arg)
      << Call->getDirectCallee() << S.Context.OCLReserveIDTy
      << Call->getArg(1)->getType() << Call->getArg(1)->getSourceRange();
  return true;
}

return false;
913}

915// Performs a semantic analysis on the call to built-in Pipe
916//        Query Functions.
917// \param S Reference to the semantic analyzer.
918// \param Call The call to the builtin function to be analyzed.
919// \return True if a semantic error was found, false otherwise.
920static bool SemaBuiltinPipePackets(Sema &S, CallExpr *Call) {
if (checkArgCount(S, Call, 1))
  return true;

if (!Call->getArg(0)->getType()->isPipeType()) {
  S.Diag(Call->getBeginLoc(), diag::err_opencl_builtin_pipe_first_arg)
      << Call->getDirectCallee() << Call->getArg(0)->getSourceRange();
  return true;
}

return false;
931}

933// OpenCL v2.0 s6.13.9 - Address space qualifier functions.
934// Performs semantic analysis for the to_global/local/private call.
935// \param S Reference to the semantic analyzer.
936// \param BuiltinID ID of the builtin function.
937// \param Call A pointer to the builtin call.
938// \return True if a semantic error has been found, false otherwise.
939static bool SemaOpenCLBuiltinToAddr(Sema &S, unsigned BuiltinID,
                                  CallExpr *Call) {
if (Call->getNumArgs() != 1) {
  S.Diag(Call->getBeginLoc(), diag::err_opencl_builtin_to_addr_arg_num)
      << Call->getDirectCallee() << Call->getSourceRange();
  return true;
}

auto RT = Call->getArg(0)->getType();
if (!RT->isPointerType() || RT->getPointeeType()
    .getAddressSpace() == LangAS::opencl_constant) {
  S.Diag(Call->getBeginLoc(), diag::err_opencl_builtin_to_addr_invalid_arg)
      << Call->getArg(0) << Call->getDirectCallee() << Call->getSourceRange();
  return true;
}

if (RT->getPointeeType().getAddressSpace() != LangAS::opencl_generic) {
  S.Diag(Call->getArg(0)->getBeginLoc(),
         diag::warn_opencl_generic_address_space_arg)
      << Call->getDirectCallee()->getNameInfo().getAsString()
      << Call->getArg(0)->getSourceRange();
}

RT = RT->getPointeeType();
auto Qual = RT.getQualifiers();
switch (BuiltinID) {
case Builtin::BIto_global:
  Qual.setAddressSpace(LangAS::opencl_global);
  break;
case Builtin::BIto_local:
  Qual.setAddressSpace(LangAS::opencl_local);
  break;
case Builtin::BIto_private:
  Qual.setAddressSpace(LangAS::opencl_private);
  break;
default:
  llvm_unreachable("Invalid builtin function")::llvm::llvm_unreachable_internal("Invalid builtin function",
 "/build/llvm-toolchain-snapshot-9~svn362543/tools/clang/lib/Sema/SemaChecking.cpp"
, 975);
}
Call->setType(S.Context.getPointerType(S.Context.getQualifiedType(
    RT.getUnqualifiedType(), Qual)));

return false;
981}

983static ExprResult SemaBuiltinLaunder(Sema &S, CallExpr *TheCall) {
if (checkArgCount(S, TheCall, 1))
  return ExprError();

// Compute __builtin_launder's parameter type from the argument.
// The parameter type is:
//  * The type of the argument if it's not an array or function type,
//  Otherwise,
//  * The decayed argument type.
QualType ParamTy = [&]() {
  QualType ArgTy = TheCall->getArg(0)->getType();
  if (const ArrayType *Ty = ArgTy->getAsArrayTypeUnsafe())
    return S.Context.getPointerType(Ty->getElementType());
  if (ArgTy->isFunctionType()) {
    return S.Context.getPointerType(ArgTy);
  }
  return ArgTy;
}();

TheCall->setType(ParamTy);

auto DiagSelect = [&]() -> llvm::Optional<unsigned> {
  if (!ParamTy->isPointerType())
    return 0;
  if (ParamTy->isFunctionPointerType())
    return 1;
  if (ParamTy->isVoidPointerType())
    return 2;
  return llvm::Optional<unsigned>{};
}();
if (DiagSelect.hasValue()) {
  S.Diag(TheCall->getBeginLoc(), diag::err_builtin_launder_invalid_arg)
      << DiagSelect.getValue() << TheCall->getSourceRange();
  return ExprError();
}

// We either have an incomplete class type, or we have a class template
// whose instantiation has not been forced. Example:
//
//   template <class T> struct Foo { T value; };
//   Foo<int> *p = nullptr;
//   auto *d = __builtin_launder(p);
if (S.RequireCompleteType(TheCall->getBeginLoc(), ParamTy->getPointeeType(),
                          diag::err_incomplete_type))
  return ExprError();

assert(ParamTy->getPointeeType()->isObjectType() &&((ParamTy->getPointeeType()->isObjectType() && "Unhandled non-object pointer case"
) ? static_cast<void> (0) : __assert_fail ("ParamTy->getPointeeType()->isObjectType() && \"Unhandled non-object pointer case\""
, "/build/llvm-toolchain-snapshot-9~svn362543/tools/clang/lib/Sema/SemaChecking.cpp"
, 1030, __PRETTY_FUNCTION__))
       "Unhandled non-object pointer case")((ParamTy->getPointeeType()->isObjectType() && "Unhandled non-object pointer case"
) ? static_cast<void> (0) : __assert_fail ("ParamTy->getPointeeType()->isObjectType() && \"Unhandled non-object pointer case\""
, "/build/llvm-toolchain-snapshot-9~svn362543/tools/clang/lib/Sema/SemaChecking.cpp"
, 1030, __PRETTY_FUNCTION__));

InitializedEntity Entity =
    InitializedEntity::InitializeParameter(S.Context, ParamTy, false);
ExprResult Arg =
    S.PerformCopyInitialization(Entity, SourceLocation(), TheCall->getArg(0));
if (Arg.isInvalid())
  return ExprError();
TheCall->setArg(0, Arg.get());

return TheCall;
1041}

1043// Emit an error and return true if the current architecture is not in the list
1044// of supported architectures.
1045static bool
1046CheckBuiltinTargetSupport(Sema &S, unsigned BuiltinID, CallExpr *TheCall,
                        ArrayRef<llvm::Triple::ArchType> SupportedArchs) {
llvm::Triple::ArchType CurArch =
    S.getASTContext().getTargetInfo().getTriple().getArch();
if (llvm::is_contained(SupportedArchs, CurArch))
  return false;
S.Diag(TheCall->getBeginLoc(), diag::err_builtin_target_unsupported)
    << TheCall->getSourceRange();
return true;
1055}

1057ExprResult
1058Sema::CheckBuiltinFunctionCall(FunctionDecl *FDecl, unsigned BuiltinID,
                             CallExpr *TheCall) {
ExprResult TheCallResult(TheCall);

// Find out if any arguments are required to be integer constant expressions.
unsigned ICEArguments = 0;
ASTContext::GetBuiltinTypeError Error;
Context.GetBuiltinType(BuiltinID, Error, &ICEArguments);
if (Error != ASTContext::GE_None)
  ICEArguments = 0;  // Don't diagnose previously diagnosed errors.

// If any arguments are required to be ICE's, check and diagnose.
for (unsigned ArgNo = 0; ICEArguments != 0; ++ArgNo) {
  // Skip arguments not required to be ICE's.
  if ((ICEArguments & (1 << ArgNo)) == 0) continue;

  llvm::APSInt Result;
  if (SemaBuiltinConstantArg(TheCall, ArgNo, Result))
    return true;
  ICEArguments &= ~(1 << ArgNo);
}

switch (BuiltinID) {
case Builtin::BI__builtin___CFStringMakeConstantString:
  assert(TheCall->getNumArgs() == 1 &&((TheCall->getNumArgs() == 1 && "Wrong # arguments to builtin CFStringMakeConstantString"
) ? static_cast<void> (0) : __assert_fail ("TheCall->getNumArgs() == 1 && \"Wrong # arguments to builtin CFStringMakeConstantString\""
, "/build/llvm-toolchain-snapshot-9~svn362543/tools/clang/lib/Sema/SemaChecking.cpp"
, 1083, __PRETTY_FUNCTION__))
         "Wrong # arguments to builtin CFStringMakeConstantString")((TheCall->getNumArgs() == 1 && "Wrong # arguments to builtin CFStringMakeConstantString"
) ? static_cast<void> (0) : __assert_fail ("TheCall->getNumArgs() == 1 && \"Wrong # arguments to builtin CFStringMakeConstantString\""
, "/build/llvm-toolchain-snapshot-9~svn362543/tools/clang/lib/Sema/SemaChecking.cpp"
, 1083, __PRETTY_FUNCTION__));
  if (CheckObjCString(TheCall->getArg(0)))
    return ExprError();
  break;
case Builtin::BI__builtin_ms_va_start:
case Builtin::BI__builtin_stdarg_start:
case Builtin::BI__builtin_va_start:
  if (SemaBuiltinVAStart(BuiltinID, TheCall))
    return ExprError();
  break;
case Builtin::BI__va_start: {
  switch (Context.getTargetInfo().getTriple().getArch()) {
  case llvm::Triple::aarch64:
  case llvm::Triple::arm:
  case llvm::Triple::thumb:
    if (SemaBuiltinVAStartARMMicrosoft(TheCall))
      return ExprError();
    break;
  default:
    if (SemaBuiltinVAStart(BuiltinID, TheCall))
      return ExprError();
    break;
  }
  break;
}

// The acquire, release, and no fence variants are ARM and AArch64 only.
case Builtin::BI_interlockedbittestandset_acq:
case Builtin::BI_interlockedbittestandset_rel:
case Builtin::BI_interlockedbittestandset_nf:
case Builtin::BI_interlockedbittestandreset_acq:
case Builtin::BI_interlockedbittestandreset_rel:
case Builtin::BI_interlockedbittestandreset_nf:
  if (CheckBuiltinTargetSupport(
          *this, BuiltinID, TheCall,
          {llvm::Triple::arm, llvm::Triple::thumb, llvm::Triple::aarch64}))
    return ExprError();
  break;

// The 64-bit bittest variants are x64, ARM, and AArch64 only.
case Builtin::BI_bittest64:
case Builtin::BI_bittestandcomplement64:
case Builtin::BI_bittestandreset64:
case Builtin::BI_bittestandset64:
case Builtin::BI_interlockedbittestandreset64:
case Builtin::BI_interlockedbittestandset64:
  if (CheckBuiltinTargetSupport(*this, BuiltinID, TheCall,
                                {llvm::Triple::x86_64, llvm::Triple::arm,
                                 llvm::Triple::thumb, llvm::Triple::aarch64}))
    return ExprError();
  break;

case Builtin::BI__builtin_isgreater:
case Builtin::BI__builtin_isgreaterequal:
case Builtin::BI__builtin_isless:
case Builtin::BI__builtin_islessequal:
case Builtin::BI__builtin_islessgreater:
case Builtin::BI__builtin_isunordered:
  if (SemaBuiltinUnorderedCompare(TheCall))
    return ExprError();
  break;
case Builtin::BI__builtin_fpclassify:
  if (SemaBuiltinFPClassification(TheCall, 6))
    return ExprError();
  break;
case Builtin::BI__builtin_isfinite:
case Builtin::BI__builtin_isinf:
case Builtin::BI__builtin_isinf_sign:
case Builtin::BI__builtin_isnan:
case Builtin::BI__builtin_isnormal:
case Builtin::BI__builtin_signbit:
case Builtin::BI__builtin_signbitf:
case Builtin::BI__builtin_signbitl:
  if (SemaBuiltinFPClassification(TheCall, 1))
    return ExprError();
  break;
case Builtin::BI__builtin_shufflevector:
  return SemaBuiltinShuffleVector(TheCall);
  // TheCall will be freed by the smart pointer here, but that's fine, since
  // SemaBuiltinShuffleVector guts it, but then doesn't release it.
case Builtin::BI__builtin_prefetch:
  if (SemaBuiltinPrefetch(TheCall))
    return ExprError();
  break;
case Builtin::BI__builtin_alloca_with_align:
  if (SemaBuiltinAllocaWithAlign(TheCall))
    return ExprError();
  break;
case Builtin::BI__assume:
case Builtin::BI__builtin_assume:
  if (SemaBuiltinAssume(TheCall))
    return ExprError();
  break;
case Builtin::BI__builtin_assume_aligned:
  if (SemaBuiltinAssumeAligned(TheCall))
    return ExprError();
  break;
case Builtin::BI__builtin_dynamic_object_size:
case Builtin::BI__builtin_object_size:
  if (SemaBuiltinConstantArgRange(TheCall, 1, 0, 3))
    return ExprError();
  break;
case Builtin::BI__builtin_longjmp:
  if (SemaBuiltinLongjmp(TheCall))
    return ExprError();
  break;
case Builtin::BI__builtin_setjmp:
  if (SemaBuiltinSetjmp(TheCall))
    return ExprError();
  break;
case Builtin::BI_setjmp:
case Builtin::BI_setjmpex:
  if (checkArgCount(*this, TheCall, 1))
    return true;
  break;
case Builtin::BI__builtin_classify_type:
  if (checkArgCount(*this, TheCall, 1)) return true;
  TheCall->setType(Context.IntTy);
  break;
case Builtin::BI__builtin_constant_p: {
  if (checkArgCount(*this, TheCall, 1)) return true;
  ExprResult Arg = DefaultFunctionArrayLvalueConversion(TheCall->getArg(0));
  if (Arg.isInvalid()) return true;
  TheCall->setArg(0, Arg.get());
  TheCall->setType(Context.IntTy);
  break;
}
case Builtin::BI__builtin_launder:
  return SemaBuiltinLaunder(*this, TheCall);
case Builtin::BI__sync_fetch_and_add:
case Builtin::BI__sync_fetch_and_add_1:
case Builtin::BI__sync_fetch_and_add_2:
case Builtin::BI__sync_fetch_and_add_4:
case Builtin::BI__sync_fetch_and_add_8:
case Builtin::BI__sync_fetch_and_add_16:
case Builtin::BI__sync_fetch_and_sub:
case Builtin::BI__sync_fetch_and_sub_1:
case Builtin::BI__sync_fetch_and_sub_2:
case Builtin::BI__sync_fetch_and_sub_4:
case Builtin::BI__sync_fetch_and_sub_8:
case Builtin::BI__sync_fetch_and_sub_16:
case Builtin::BI__sync_fetch_and_or:
case Builtin::BI__sync_fetch_and_or_1:
case Builtin::BI__sync_fetch_and_or_2:
case Builtin::BI__sync_fetch_and_or_4:
case Builtin::BI__sync_fetch_and_or_8:
case Builtin::BI__sync_fetch_and_or_16:
case Builtin::BI__sync_fetch_and_and:
case Builtin::BI__sync_fetch_and_and_1:
case Builtin::BI__sync_fetch_and_and_2:
case Builtin::BI__sync_fetch_and_and_4:
case Builtin::BI__sync_fetch_and_and_8:
case Builtin::BI__sync_fetch_and_and_16:
case Builtin::BI__sync_fetch_and_xor:
case Builtin::BI__sync_fetch_and_xor_1:
case Builtin::BI__sync_fetch_and_xor_2:
case Builtin::BI__sync_fetch_and_xor_4:
case Builtin::BI__sync_fetch_and_xor_8:
case Builtin::BI__sync_fetch_and_xor_16:
case Builtin::BI__sync_fetch_and_nand:
case Builtin::BI__sync_fetch_and_nand_1:
case Builtin::BI__sync_fetch_and_nand_2:
case Builtin::BI__sync_fetch_and_nand_4:
case Builtin::BI__sync_fetch_and_nand_8:
case Builtin::BI__sync_fetch_and_nand_16:
case Builtin::BI__sync_add_and_fetch:
case Builtin::BI__sync_add_and_fetch_1:
case Builtin::BI__sync_add_and_fetch_2:
case Builtin::BI__sync_add_and_fetch_4:
case Builtin::BI__sync_add_and_fetch_8:
case Builtin::BI__sync_add_and_fetch_16:
case Builtin::BI__sync_sub_and_fetch:
case Builtin::BI__sync_sub_and_fetch_1:
case Builtin::BI__sync_sub_and_fetch_2:
case Builtin::BI__sync_sub_and_fetch_4:
case Builtin::BI__sync_sub_and_fetch_8:
case Builtin::BI__sync_sub_and_fetch_16:
case Builtin::BI__sync_and_and_fetch:
case Builtin::BI__sync_and_and_fetch_1:
case Builtin::BI__sync_and_and_fetch_2:
case Builtin::BI__sync_and_and_fetch_4:
case Builtin::BI__sync_and_and_fetch_8:
case Builtin::BI__sync_and_and_fetch_16:
case Builtin::BI__sync_or_and_fetch:
case Builtin::BI__sync_or_and_fetch_1:
case Builtin::BI__sync_or_and_fetch_2:
case Builtin::BI__sync_or_and_fetch_4:
case Builtin::BI__sync_or_and_fetch_8:
case Builtin::BI__sync_or_and_fetch_16:
case Builtin::BI__sync_xor_and_fetch:
case Builtin::BI__sync_xor_and_fetch_1:
case Builtin::BI__sync_xor_and_fetch_2:
case Builtin::BI__sync_xor_and_fetch_4:
case Builtin::BI__sync_xor_and_fetch_8:
case Builtin::BI__sync_xor_and_fetch_16:
case Builtin::BI__sync_nand_and_fetch:
case Builtin::BI__sync_nand_and_fetch_1:
case Builtin::BI__sync_nand_and_fetch_2:
case Builtin::BI__sync_nand_and_fetch_4:
case Builtin::BI__sync_nand_and_fetch_8:
case Builtin::BI__sync_nand_and_fetch_16:
case Builtin::BI__sync_val_compare_and_swap:
case Builtin::BI__sync_val_compare_and_swap_1:
case Builtin::BI__sync_val_compare_and_swap_2:
case Builtin::BI__sync_val_compare_and_swap_4:
case Builtin::BI__sync_val_compare_and_swap_8:
case Builtin::BI__sync_val_compare_and_swap_16:
case Builtin::BI__sync_bool_compare_and_swap:
case Builtin::BI__sync_bool_compare_and_swap_1:
case Builtin::BI__sync_bool_compare_and_swap_2:
case Builtin::BI__sync_bool_compare_and_swap_4:
case Builtin::BI__sync_bool_compare_and_swap_8:
case Builtin::BI__sync_bool_compare_and_swap_16:
case Builtin::BI__sync_lock_test_and_set:
case Builtin::BI__sync_lock_test_and_set_1:
case Builtin::BI__sync_lock_test_and_set_2:
case Builtin::BI__sync_lock_test_and_set_4:
case Builtin::BI__sync_lock_test_and_set_8:
case Builtin::BI__sync_lock_test_and_set_16:
case Builtin::BI__sync_lock_release:
case Builtin::BI__sync_lock_release_1:
case Builtin::BI__sync_lock_release_2:
case Builtin::BI__sync_lock_release_4:
case Builtin::BI__sync_lock_release_8:
case Builtin::BI__sync_lock_release_16:
case Builtin::BI__sync_swap:
case Builtin::BI__sync_swap_1:
case Builtin::BI__sync_swap_2:
case Builtin::BI__sync_swap_4:
case Builtin::BI__sync_swap_8:
case Builtin::BI__sync_swap_16:
  return SemaBuiltinAtomicOverloaded(TheCallResult);
case Builtin::BI__sync_synchronize:
  Diag(TheCall->getBeginLoc(), diag::warn_atomic_implicit_seq_cst)
      << TheCall->getCallee()->getSourceRange();
  break;
case Builtin::BI__builtin_nontemporal_load:
case Builtin::BI__builtin_nontemporal_store:
  return SemaBuiltinNontemporalOverloaded(TheCallResult);
1322#define BUILTIN(ID, TYPE, ATTRS)
1323#define ATOMIC_BUILTIN(ID, TYPE, ATTRS) \
case Builtin::BI##ID: \
  return SemaAtomicOpsOverloaded(TheCallResult, AtomicExpr::AO##ID);
1326#include "clang/Basic/Builtins.def"
case Builtin::BI__annotation:
  if (SemaBuiltinMSVCAnnotation(*this, TheCall))
    return ExprError();
  break;
case Builtin::BI__builtin_annotation:
  if (SemaBuiltinAnnotation(*this, TheCall))
    return ExprError();
  break;
case Builtin::BI__builtin_addressof:
  if (SemaBuiltinAddressof(*this, TheCall))
    return ExprError();
  break;
case Builtin::BI__builtin_add_overflow:
case Builtin::BI__builtin_sub_overflow:
case Builtin::BI__builtin_mul_overflow:
  if (SemaBuiltinOverflow(*this, TheCall))
    return ExprError();
  break;
case Builtin::BI__builtin_operator_new:
case Builtin::BI__builtin_operator_delete: {
  bool IsDelete = BuiltinID == Builtin::BI__builtin_operator_delete;
  ExprResult Res =
      SemaBuiltinOperatorNewDeleteOverloaded(TheCallResult, IsDelete);
  if (Res.isInvalid())
    CorrectDelayedTyposInExpr(TheCallResult.get());
  return Res;
}
case Builtin::BI__builtin_dump_struct: {
  // We first want to ensure we are called with 2 arguments
  if (checkArgCount(*this, TheCall, 2))
    return ExprError();
  // Ensure that the first argument is of type 'struct XX *'
  const Expr *PtrArg = TheCall->getArg(0)->IgnoreParenImpCasts();
  const QualType PtrArgType = PtrArg->getType();
  if (!PtrArgType->isPointerType() ||
      !PtrArgType->getPointeeType()->isRecordType()) {
    Diag(PtrArg->getBeginLoc(), diag::err_typecheck_convert_incompatible)
        << PtrArgType << "structure pointer" << 1 << 0 << 3 << 1 << PtrArgType
        << "structure pointer";
    return ExprError();
  }

  // Ensure that the second argument is of type 'FunctionType'
  const Expr *FnPtrArg = TheCall->getArg(1)->IgnoreImpCasts();
  const QualType FnPtrArgType = FnPtrArg->getType();
  if (!FnPtrArgType->isPointerType()) {
    Diag(FnPtrArg->getBeginLoc(), diag::err_typecheck_convert_incompatible)
        << FnPtrArgType << "'int (*)(const char *, ...)'" << 1 << 0 << 3 << 2
        << FnPtrArgType << "'int (*)(const char *, ...)'";
    return ExprError();
  }

  const auto *FuncType =
      FnPtrArgType->getPointeeType()->getAs<FunctionType>();

  if (!FuncType) {
    Diag(FnPtrArg->getBeginLoc(), diag::err_typecheck_convert_incompatible)
        << FnPtrArgType << "'int (*)(const char *, ...)'" << 1 << 0 << 3 << 2
        << FnPtrArgType << "'int (*)(const char *, ...)'";
    return ExprError();
  }

  if (const auto *FT = dyn_cast<FunctionProtoType>(FuncType)) {
    if (!FT->getNumParams()) {
      Diag(FnPtrArg->getBeginLoc(), diag::err_typecheck_convert_incompatible)
          << FnPtrArgType << "'int (*)(const char *, ...)'" << 1 << 0 << 3
          << 2 << FnPtrArgType << "'int (*)(const char *, ...)'";
      return ExprError();
    }
    QualType PT = FT->getParamType(0);
    if (!FT->isVariadic() || FT->getReturnType() != Context.IntTy ||
        !PT->isPointerType() || !PT->getPointeeType()->isCharType() ||
        !PT->getPointeeType().isConstQualified()) {
      Diag(FnPtrArg->getBeginLoc(), diag::err_typecheck_convert_incompatible)
          << FnPtrArgType << "'int (*)(const char *, ...)'" << 1 << 0 << 3
          << 2 << FnPtrArgType << "'int (*)(const char *, ...)'";
      return ExprError();
    }
  }

  TheCall->setType(Context.IntTy);
  break;
}
case Builtin::BI__builtin_call_with_static_chain:
  if (SemaBuiltinCallWithStaticChain(*this, TheCall))
    return ExprError();
  break;
case Builtin::BI__exception_code:
case Builtin::BI_exception_code:
  if (SemaBuiltinSEHScopeCheck(*this, TheCall, Scope::SEHExceptScope,
                               diag::err_seh___except_block))
    return ExprError();
  break;
case Builtin::BI__exception_info:
case Builtin::BI_exception_info:
  if (SemaBuiltinSEHScopeCheck(*this, TheCall, Scope::SEHFilterScope,
                               diag::err_seh___except_filter))
    return ExprError();
  break;
case Builtin::BI__GetExceptionInfo:
  if (checkArgCount(*this, TheCall, 1))
    return ExprError();

  if (CheckCXXThrowOperand(
          TheCall->getBeginLoc(),
          Context.getExceptionObjectType(FDecl->getParamDecl(0)->getType()),
          TheCall))
    return ExprError();

  TheCall->setType(Context.VoidPtrTy);
  break;
// OpenCL v2.0, s6.13.16 - Pipe functions
case Builtin::BIread_pipe:
case Builtin::BIwrite_pipe:
  // Since those two functions are declared with var args, we need a semantic
  // check for the argument.
  if (SemaBuiltinRWPipe(*this, TheCall))
    return ExprError();
  break;
case Builtin::BIreserve_read_pipe:
case Builtin::BIreserve_write_pipe:
case Builtin::BIwork_group_reserve_read_pipe:
case Builtin::BIwork_group_reserve_write_pipe:
  if (SemaBuiltinReserveRWPipe(*this, TheCall))
    return ExprError();
  break;
case Builtin::BIsub_group_reserve_read_pipe:
case Builtin::BIsub_group_reserve_write_pipe:
  if (checkOpenCLSubgroupExt(*this, TheCall) ||
      SemaBuiltinReserveRWPipe(*this, TheCall))
    return ExprError();
  break;
case Builtin::BIcommit_read_pipe:
case Builtin::BIcommit_write_pipe:
case Builtin::BIwork_group_commit_read_pipe:
case Builtin::BIwork_group_commit_write_pipe:
  if (SemaBuiltinCommitRWPipe(*this, TheCall))
    return ExprError();
  break;
case Builtin::BIsub_group_commit_read_pipe:
case Builtin::BIsub_group_commit_write_pipe:
  if (checkOpenCLSubgroupExt(*this, TheCall) ||
      SemaBuiltinCommitRWPipe(*this, TheCall))
    return ExprError();
  break;
case Builtin::BIget_pipe_num_packets:
case Builtin::BIget_pipe_max_packets:
  if (SemaBuiltinPipePackets(*this, TheCall))
    return ExprError();
  break;
case Builtin::BIto_global:
case Builtin::BIto_local:
case Builtin::BIto_private:
  if (SemaOpenCLBuiltinToAddr(*this, BuiltinID, TheCall))
    return ExprError();
  break;
// OpenCL v2.0, s6.13.17 - Enqueue kernel functions.
case Builtin::BIenqueue_kernel:
  if (SemaOpenCLBuiltinEnqueueKernel(*this, TheCall))
    return ExprError();
  break;
case Builtin::BIget_kernel_work_group_size:
case Builtin::BIget_kernel_preferred_work_group_size_multiple:
  if (SemaOpenCLBuiltinKernelWorkGroupSize(*this, TheCall))
    return ExprError();
  break;
case Builtin::BIget_kernel_max_sub_group_size_for_ndrange:
case Builtin::BIget_kernel_sub_group_count_for_ndrange:
  if (SemaOpenCLBuiltinNDRangeAndBlock(*this, TheCall))
    return ExprError();
  break;
case Builtin::BI__builtin_os_log_format:
case Builtin::BI__builtin_os_log_format_buffer_size:
  if (SemaBuiltinOSLogFormat(TheCall))
    return ExprError();
  break;
}

// Since the target specific builtins for each arch overlap, only check those
// of the arch we are compiling for.
if (Context.BuiltinInfo.isTSBuiltin(BuiltinID)) {
  switch (Context.getTargetInfo().getTriple().getArch()) {
    case llvm::Triple::arm:
    case llvm::Triple::armeb:
    case llvm::Triple::thumb:
    case llvm::Triple::thumbeb:
      if (CheckARMBuiltinFunctionCall(BuiltinID, TheCall))
        return ExprError();
      break;
    case llvm::Triple::aarch64:
    case llvm::Triple::aarch64_be:
      if (CheckAArch64BuiltinFunctionCall(BuiltinID, TheCall))
        return ExprError();
      break;
    case llvm::Triple::hexagon:
      if (CheckHexagonBuiltinFunctionCall(BuiltinID, TheCall))
        return ExprError();
      break;
    case llvm::Triple::mips:
    case llvm::Triple::mipsel:
    case llvm::Triple::mips64:
    case llvm::Triple::mips64el:
      if (CheckMipsBuiltinFunctionCall(BuiltinID, TheCall))
        return ExprError();
      break;
    case llvm::Triple::systemz:
      if (CheckSystemZBuiltinFunctionCall(BuiltinID, TheCall))
        return ExprError();
      break;
    case llvm::Triple::x86:
    case llvm::Triple::x86_64:
      if (CheckX86BuiltinFunctionCall(BuiltinID, TheCall))
        return ExprError();
      break;
    case llvm::Triple::ppc:
    case llvm::Triple::ppc64:
    case llvm::Triple::ppc64le:
      if (CheckPPCBuiltinFunctionCall(BuiltinID, TheCall))
        return ExprError();
      break;
    default:
      break;
  }
}

return TheCallResult;
1553}

1555// Get the valid immediate range for the specified NEON type code.
1556static unsigned RFT(unsigned t, bool shift = false, bool ForceQuad = false) {
NeonTypeFlags Type(t);
int IsQuad = ForceQuad ? true : Type.isQuad();
switch (Type.getEltType()) {
case NeonTypeFlags::Int8:
case NeonTypeFlags::Poly8:
  return shift ? 7 : (8 << IsQuad) - 1;
case NeonTypeFlags::Int16:
case NeonTypeFlags::Poly16:
  return shift ? 15 : (4 << IsQuad) - 1;
case NeonTypeFlags::Int32:
  return shift ? 31 : (2 << IsQuad) - 1;
case NeonTypeFlags::Int64:
case NeonTypeFlags::Poly64:
  return shift ? 63 : (1 << IsQuad) - 1;
case NeonTypeFlags::Poly128:
  return shift ? 127 : (1 << IsQuad) - 1;
case NeonTypeFlags::Float16:
  assert(!shift && "cannot shift float types!")((!shift && "cannot shift float types!") ? static_cast
<void> (0) : __assert_fail ("!shift && \"cannot shift float types!\""
, "/build/llvm-toolchain-snapshot-9~svn362543/tools/clang/lib/Sema/SemaChecking.cpp"
, 1574, __PRETTY_FUNCTION__));
  return (4 << IsQuad) - 1;
case NeonTypeFlags::Float32:
  assert(!shift && "cannot shift float types!")((!shift && "cannot shift float types!") ? static_cast
<void> (0) : __assert_fail ("!shift && \"cannot shift float types!\""
, "/build/llvm-toolchain-snapshot-9~svn362543/tools/clang/lib/Sema/SemaChecking.cpp"
, 1577, __PRETTY_FUNCTION__));
  return (2 << IsQuad) - 1;
case NeonTypeFlags::Float64:
  assert(!shift && "cannot shift float types!")((!shift && "cannot shift float types!") ? static_cast
<void> (0) : __assert_fail ("!shift && \"cannot shift float types!\""
, "/build/llvm-toolchain-snapshot-9~svn362543/tools/clang/lib/Sema/SemaChecking.cpp"
, 1580, __PRETTY_FUNCTION__));
  return (1 << IsQuad) - 1;
}
llvm_unreachable("Invalid NeonTypeFlag!")::llvm::llvm_unreachable_internal("Invalid NeonTypeFlag!", "/build/llvm-toolchain-snapshot-9~svn362543/tools/clang/lib/Sema/SemaChecking.cpp"
, 1583);
1584}

1586/// getNeonEltType - Return the QualType corresponding to the elements of
1587/// the vector type specified by the NeonTypeFlags.  This is used to check
1588/// the pointer arguments for Neon load/store intrinsics.
1589static QualType getNeonEltType(NeonTypeFlags Flags, ASTContext &Context,
                             bool IsPolyUnsigned, bool IsInt64Long) {
switch (Flags.getEltType()) {
case NeonTypeFlags::Int8:
  return Flags.isUnsigned() ? Context.UnsignedCharTy : Context.SignedCharTy;
case NeonTypeFlags::Int16:
  return Flags.isUnsigned() ? Context.UnsignedShortTy : Context.ShortTy;
case NeonTypeFlags::Int32:
  return Flags.isUnsigned() ? Context.UnsignedIntTy : Context.IntTy;
case NeonTypeFlags::Int64:
  if (IsInt64Long)
    return Flags.isUnsigned() ? Context.UnsignedLongTy : Context.LongTy;
  else
    return Flags.isUnsigned() ? Context.UnsignedLongLongTy
                              : Context.LongLongTy;
case NeonTypeFlags::Poly8:
  return IsPolyUnsigned ? Context.UnsignedCharTy : Context.SignedCharTy;
case NeonTypeFlags::Poly16:
  return IsPolyUnsigned ? Context.UnsignedShortTy : Context.ShortTy;
case NeonTypeFlags::Poly64:
  if (IsInt64Long)
    return Context.UnsignedLongTy;
  else
    return Context.UnsignedLongLongTy;
case NeonTypeFlags::Poly128:
  break;
case NeonTypeFlags::Float16:
  return Context.HalfTy;
case NeonTypeFlags::Float32:
  return Context.FloatTy;
case NeonTypeFlags::Float64:
  return Context.DoubleTy;
}
llvm_unreachable("Invalid NeonTypeFlag!")::llvm::llvm_unreachable_internal("Invalid NeonTypeFlag!", "/build/llvm-toolchain-snapshot-9~svn362543/tools/clang/lib/Sema/SemaChecking.cpp"
, 1622);
1623}

1625bool Sema::CheckNeonBuiltinFunctionCall(unsigned BuiltinID, CallExpr *TheCall) {
llvm::APSInt Result;
uint64_t mask = 0;
unsigned TV = 0;
int PtrArgNum = -1;
bool HasConstPtr = false;
switch (BuiltinID) {
1632#define GET_NEON_OVERLOAD_CHECK
1633#include "clang/Basic/arm_neon.inc"
1634#include "clang/Basic/arm_fp16.inc"
1635#undef GET_NEON_OVERLOAD_CHECK
}

// For NEON intrinsics which are overloaded on vector element type, validate
// the immediate which specifies which variant to emit.
unsigned ImmArg = TheCall->getNumArgs()-1;
if (mask) {
  if (SemaBuiltinConstantArg(TheCall, ImmArg, Result))
    return true;

  TV = Result.getLimitedValue(64);
  if ((TV > 63) || (mask & (1ULL << TV)) == 0)
    return Diag(TheCall->getBeginLoc(), diag::err_invalid_neon_type_code)
           << TheCall->getArg(ImmArg)->getSourceRange();
}

if (PtrArgNum >= 0) {
  // Check that pointer arguments have the specified type.
  Expr *Arg = TheCall->getArg(PtrArgNum);
  if (ImplicitCastExpr *ICE = dyn_cast<ImplicitCastExpr>(Arg))
    Arg = ICE->getSubExpr();
  ExprResult RHS = DefaultFunctionArrayLvalueConversion(Arg);
  QualType RHSTy = RHS.get()->getType();

  llvm::Triple::ArchType Arch = Context.getTargetInfo().getTriple().getArch();
  bool IsPolyUnsigned = Arch == llvm::Triple::aarch64 ||
                        Arch == llvm::Triple::aarch64_be;
  bool IsInt64Long =
      Context.getTargetInfo().getInt64Type() == TargetInfo::SignedLong;
  QualType EltTy =
      getNeonEltType(NeonTypeFlags(TV), Context, IsPolyUnsigned, IsInt64Long);
  if (HasConstPtr)
    EltTy = EltTy.withConst();
  QualType LHSTy = Context.getPointerType(EltTy);
  AssignConvertType ConvTy;
  ConvTy = CheckSingleAssignmentConstraints(LHSTy, RHS);
  if (RHS.isInvalid())
    return true;
  if (DiagnoseAssignmentResult(ConvTy, Arg->getBeginLoc(), LHSTy, RHSTy,
                               RHS.get(), AA_Assigning))
    return true;
}

// For NEON intrinsics which take an immediate value as part of the
// instruction, range check them here.
unsigned i = 0, l = 0, u = 0;
switch (BuiltinID) {
default:
  return false;
#define GET_NEON_IMMEDIATE_CHECK
#include "clang/Basic/arm_neon.inc"
#include "clang/Basic/arm_fp16.inc"
#undef GET_NEON_IMMEDIATE_CHECK
}

return SemaBuiltinConstantArgRange(TheCall, i, l, u + l);
1691}

1693bool Sema::CheckARMBuiltinExclusiveCall(unsigned BuiltinID, CallExpr *TheCall,
                                      unsigned MaxWidth) {
assert((BuiltinID == ARM::BI__builtin_arm_ldrex ||(((BuiltinID == ARM::BI__builtin_arm_ldrex || BuiltinID == ARM
::BI__builtin_arm_ldaex || BuiltinID == ARM::BI__builtin_arm_strex
 || BuiltinID == ARM::BI__builtin_arm_stlex || BuiltinID == AArch64
::BI__builtin_arm_ldrex || BuiltinID == AArch64::BI__builtin_arm_ldaex
 || BuiltinID == AArch64::BI__builtin_arm_strex || BuiltinID ==
 AArch64::BI__builtin_arm_stlex) && "unexpected ARM builtin"
) ? static_cast<void> (0) : __assert_fail ("(BuiltinID == ARM::BI__builtin_arm_ldrex || BuiltinID == ARM::BI__builtin_arm_ldaex || BuiltinID == ARM::BI__builtin_arm_strex || BuiltinID == ARM::BI__builtin_arm_stlex || BuiltinID == AArch64::BI__builtin_arm_ldrex || BuiltinID == AArch64::BI__builtin_arm_ldaex || BuiltinID == AArch64::BI__builtin_arm_strex || BuiltinID == AArch64::BI__builtin_arm_stlex) && \"unexpected ARM builtin\""
, "/build/llvm-toolchain-snapshot-9~svn362543/tools/clang/lib/Sema/SemaChecking.cpp"
, 1703, __PRETTY_FUNCTION__))
        BuiltinID == ARM::BI__builtin_arm_ldaex ||(((BuiltinID == ARM::BI__builtin_arm_ldrex || BuiltinID == ARM
::BI__builtin_arm_ldaex || BuiltinID == ARM::BI__builtin_arm_strex
 || BuiltinID == ARM::BI__builtin_arm_stlex || BuiltinID == AArch64
::BI__builtin_arm_ldrex || BuiltinID == AArch64::BI__builtin_arm_ldaex
 || BuiltinID == AArch64::BI__builtin_arm_strex || BuiltinID ==
 AArch64::BI__builtin_arm_stlex) && "unexpected ARM builtin"
) ? static_cast<void> (0) : __assert_fail ("(BuiltinID == ARM::BI__builtin_arm_ldrex || BuiltinID == ARM::BI__builtin_arm_ldaex || BuiltinID == ARM::BI__builtin_arm_strex || BuiltinID == ARM::BI__builtin_arm_stlex || BuiltinID == AArch64::BI__builtin_arm_ldrex || BuiltinID == AArch64::BI__builtin_arm_ldaex || BuiltinID == AArch64::BI__builtin_arm_strex || BuiltinID == AArch64::BI__builtin_arm_stlex) && \"unexpected ARM builtin\""
, "/build/llvm-toolchain-snapshot-9~svn362543/tools/clang/lib/Sema/SemaChecking.cpp"
, 1703, __PRETTY_FUNCTION__))
        BuiltinID == ARM::BI__builtin_arm_strex ||(((BuiltinID == ARM::BI__builtin_arm_ldrex || BuiltinID == ARM
::BI__builtin_arm_ldaex || BuiltinID == ARM::BI__builtin_arm_strex
 || BuiltinID == ARM::BI__builtin_arm_stlex || BuiltinID == AArch64
::BI__builtin_arm_ldrex || BuiltinID == AArch64::BI__builtin_arm_ldaex
 || BuiltinID == AArch64::BI__builtin_arm_strex || BuiltinID ==
 AArch64::BI__builtin_arm_stlex) && "unexpected ARM builtin"
) ? static_cast<void> (0) : __assert_fail ("(BuiltinID == ARM::BI__builtin_arm_ldrex || BuiltinID == ARM::BI__builtin_arm_ldaex || BuiltinID == ARM::BI__builtin_arm_strex || BuiltinID == ARM::BI__builtin_arm_stlex || BuiltinID == AArch64::BI__builtin_arm_ldrex || BuiltinID == AArch64::BI__builtin_arm_ldaex || BuiltinID == AArch64::BI__builtin_arm_strex || BuiltinID == AArch64::BI__builtin_arm_stlex) && \"unexpected ARM builtin\""
, "/build/llvm-toolchain-snapshot-9~svn362543/tools/clang/lib/Sema/SemaChecking.cpp"
, 1703, __PRETTY_FUNCTION__))
        BuiltinID == ARM::BI__builtin_arm_stlex ||(((BuiltinID == ARM::BI__builtin_arm_ldrex || BuiltinID == ARM
::BI__builtin_arm_ldaex || BuiltinID == ARM::BI__builtin_arm_strex
 || BuiltinID == ARM::BI__builtin_arm_stlex || BuiltinID == AArch64
::BI__builtin_arm_ldrex || BuiltinID == AArch64::BI__builtin_arm_ldaex
 || BuiltinID == AArch64::BI__builtin_arm_strex || BuiltinID ==
 AArch64::BI__builtin_arm_stlex) && "unexpected ARM builtin"
) ? static_cast<void> (0) : __assert_fail ("(BuiltinID == ARM::BI__builtin_arm_ldrex || BuiltinID == ARM::BI__builtin_arm_ldaex || BuiltinID == ARM::BI__builtin_arm_strex || BuiltinID == ARM::BI__builtin_arm_stlex || BuiltinID == AArch64::BI__builtin_arm_ldrex || BuiltinID == AArch64::BI__builtin_arm_ldaex || BuiltinID == AArch64::BI__builtin_arm_strex || BuiltinID == AArch64::BI__builtin_arm_stlex) && \"unexpected ARM builtin\""
, "/build/llvm-toolchain-snapshot-9~svn362543/tools/clang/lib/Sema/SemaChecking.cpp"
, 1703, __PRETTY_FUNCTION__))
        BuiltinID == AArch64::BI__builtin_arm_ldrex ||(((BuiltinID == ARM::BI__builtin_arm_ldrex || BuiltinID == ARM
::BI__builtin_arm_ldaex || BuiltinID == ARM::BI__builtin_arm_strex
 || BuiltinID == ARM::BI__builtin_arm_stlex || BuiltinID == AArch64
::BI__builtin_arm_ldrex || BuiltinID == AArch64::BI__builtin_arm_ldaex
 || BuiltinID == AArch64::BI__builtin_arm_strex || BuiltinID ==
 AArch64::BI__builtin_arm_stlex) && "unexpected ARM builtin"
) ? static_cast<void> (0) : __assert_fail ("(BuiltinID == ARM::BI__builtin_arm_ldrex || BuiltinID == ARM::BI__builtin_arm_ldaex || BuiltinID == ARM::BI__builtin_arm_strex || BuiltinID == ARM::BI__builtin_arm_stlex || BuiltinID == AArch64::BI__builtin_arm_ldrex || BuiltinID == AArch64::BI__builtin_arm_ldaex || BuiltinID == AArch64::BI__builtin_arm_strex || BuiltinID == AArch64::BI__builtin_arm_stlex) && \"unexpected ARM builtin\""
, "/build/llvm-toolchain-snapshot-9~svn362543/tools/clang/lib/Sema/SemaChecking.cpp"
, 1703, __PRETTY_FUNCTION__))
        BuiltinID == AArch64::BI__builtin_arm_ldaex ||(((BuiltinID == ARM::BI__builtin_arm_ldrex || BuiltinID == ARM
::BI__builtin_arm_ldaex || BuiltinID == ARM::BI__builtin_arm_strex
 || BuiltinID == ARM::BI__builtin_arm_stlex || BuiltinID == AArch64
::BI__builtin_arm_ldrex || BuiltinID == AArch64::BI__builtin_arm_ldaex
 || BuiltinID == AArch64::BI__builtin_arm_strex || BuiltinID ==
 AArch64::BI__builtin_arm_stlex) && "unexpected ARM builtin"
) ? static_cast<void> (0) : __assert_fail ("(BuiltinID == ARM::BI__builtin_arm_ldrex || BuiltinID == ARM::BI__builtin_arm_ldaex || BuiltinID == ARM::BI__builtin_arm_strex || BuiltinID == ARM::BI__builtin_arm_stlex || BuiltinID == AArch64::BI__builtin_arm_ldrex || BuiltinID == AArch64::BI__builtin_arm_ldaex || BuiltinID == AArch64::BI__builtin_arm_strex || BuiltinID == AArch64::BI__builtin_arm_stlex) && \"unexpected ARM builtin\""
, "/build/llvm-toolchain-snapshot-9~svn362543/tools/clang/lib/Sema/SemaChecking.cpp"
, 1703, __PRETTY_FUNCTION__))
        BuiltinID == AArch64::BI__builtin_arm_strex ||(((BuiltinID == ARM::BI__builtin_arm_ldrex || BuiltinID == ARM
::BI__builtin_arm_ldaex || BuiltinID == ARM::BI__builtin_arm_strex
 || BuiltinID == ARM::BI__builtin_arm_stlex || BuiltinID == AArch64
::BI__builtin_arm_ldrex || BuiltinID == AArch64::BI__builtin_arm_ldaex
 || BuiltinID == AArch64::BI__builtin_arm_strex || BuiltinID ==
 AArch64::BI__builtin_arm_stlex) && "unexpected ARM builtin"
) ? static_cast<void> (0) : __assert_fail ("(BuiltinID == ARM::BI__builtin_arm_ldrex || BuiltinID == ARM::BI__builtin_arm_ldaex || BuiltinID == ARM::BI__builtin_arm_strex || BuiltinID == ARM::BI__builtin_arm_stlex || BuiltinID == AArch64::BI__builtin_arm_ldrex || BuiltinID == AArch64::BI__builtin_arm_ldaex || BuiltinID == AArch64::BI__builtin_arm_strex || BuiltinID == AArch64::BI__builtin_arm_stlex) && \"unexpected ARM builtin\""
, "/build/llvm-toolchain-snapshot-9~svn362543/tools/clang/lib/Sema/SemaChecking.cpp"
, 1703, __PRETTY_FUNCTION__))
        BuiltinID == AArch64::BI__builtin_arm_stlex) &&(((BuiltinID == ARM::BI__builtin_arm_ldrex || BuiltinID == ARM
::BI__builtin_arm_ldaex || BuiltinID == ARM::BI__builtin_arm_strex
 || BuiltinID == ARM::BI__builtin_arm_stlex || BuiltinID == AArch64
::BI__builtin_arm_ldrex || BuiltinID == AArch64::BI__builtin_arm_ldaex
 || BuiltinID == AArch64::BI__builtin_arm_strex || BuiltinID ==
 AArch64::BI__builtin_arm_stlex) && "unexpected ARM builtin"
) ? static_cast<void> (0) : __assert_fail ("(BuiltinID == ARM::BI__builtin_arm_ldrex || BuiltinID == ARM::BI__builtin_arm_ldaex || BuiltinID == ARM::BI__builtin_arm_strex || BuiltinID == ARM::BI__builtin_arm_stlex || BuiltinID == AArch64::BI__builtin_arm_ldrex || BuiltinID == AArch64::BI__builtin_arm_ldaex || BuiltinID == AArch64::BI__builtin_arm_strex || BuiltinID == AArch64::BI__builtin_arm_stlex) && \"unexpected ARM builtin\""
, "/build/llvm-toolchain-snapshot-9~svn362543/tools/clang/lib/Sema/SemaChecking.cpp"
, 1703, __PRETTY_FUNCTION__))
       "unexpected ARM builtin")(((BuiltinID == ARM::BI__builtin_arm_ldrex || BuiltinID == ARM
::BI__builtin_arm_ldaex || BuiltinID == ARM::BI__builtin_arm_strex
 || BuiltinID == ARM::BI__builtin_arm_stlex || BuiltinID == AArch64
::BI__builtin_arm_ldrex || BuiltinID == AArch64::BI__builtin_arm_ldaex
 || BuiltinID == AArch64::BI__builtin_arm_strex || BuiltinID ==
 AArch64::BI__builtin_arm_stlex) && "unexpected ARM builtin"
) ? static_cast<void> (0) : __assert_fail ("(BuiltinID == ARM::BI__builtin_arm_ldrex || BuiltinID == ARM::BI__builtin_arm_ldaex || BuiltinID == ARM::BI__builtin_arm_strex || BuiltinID == ARM::BI__builtin_arm_stlex || BuiltinID == AArch64::BI__builtin_arm_ldrex || BuiltinID == AArch64::BI__builtin_arm_ldaex || BuiltinID == AArch64::BI__builtin_arm_strex || BuiltinID == AArch64::BI__builtin_arm_stlex) && \"unexpected ARM builtin\""
, "/build/llvm-toolchain-snapshot-9~svn362543/tools/clang/lib/Sema/SemaChecking.cpp"
, 1703, __PRETTY_FUNCTION__));
bool IsLdrex = BuiltinID == ARM::BI__builtin_arm_ldrex ||
               BuiltinID == ARM::BI__builtin_arm_ldaex ||
               BuiltinID == AArch64::BI__builtin_arm_ldrex ||
               BuiltinID == AArch64::BI__builtin_arm_ldaex;

DeclRefExpr *DRE =cast<DeclRefExpr>(TheCall->getCallee()->IgnoreParenCasts());

// Ensure that we have the proper number of arguments.
if (checkArgCount(*this, TheCall, IsLdrex ? 1 : 2))
  return true;

// Inspect the pointer argument of the atomic builtin.  This should always be
// a pointer type, whose element is an integral scalar or pointer type.
// Because it is a pointer type, we don't have to worry about any implicit
// casts here.
Expr *PointerArg = TheCall->getArg(IsLdrex ? 0 : 1);
ExprResult PointerArgRes = DefaultFunctionArrayLvalueConversion(PointerArg);
if (PointerArgRes.isInvalid())
  return true;
PointerArg = PointerArgRes.get();

const PointerType *pointerType = PointerArg->getType()->getAs<PointerType>();
if (!pointerType) {
  Diag(DRE->getBeginLoc(), diag::err_atomic_builtin_must_be_pointer)
      << PointerArg->getType() << PointerArg->getSourceRange();
  return true;
}

// ldrex takes a "const volatile T*" and strex takes a "volatile T*". Our next
// task is to insert the appropriate casts into the AST. First work out just
// what the appropriate type is.
QualType ValType = pointerType->getPointeeType();
QualType AddrType = ValType.getUnqualifiedType().withVolatile();
if (IsLdrex)
  AddrType.addConst();

// Issue a warning if the cast is dodgy.
CastKind CastNeeded = CK_NoOp;
if (!AddrType.isAtLeastAsQualifiedAs(ValType)) {
  CastNeeded = CK_BitCast;
  Diag(DRE->getBeginLoc(), diag::ext_typecheck_convert_discards_qualifiers)
      << PointerArg->getType() << Context.getPointerType(AddrType)
      << AA_Passing << PointerArg->getSourceRange();
}

// Finally, do the cast and replace the argument with the corrected version.
AddrType = Context.getPointerType(AddrType);
PointerArgRes = ImpCastExprToType(PointerArg, AddrType, CastNeeded);
if (PointerArgRes.isInvalid())
  return true;
PointerArg = PointerArgRes.get();

TheCall->setArg(IsLdrex ? 0 : 1, PointerArg);

// In general, we allow ints, floats and pointers to be loaded and stored.
if (!ValType->isIntegerType() && !ValType->isAnyPointerType() &&
    !ValType->isBlockPointerType() && !ValType->isFloatingType()) {
  Diag(DRE->getBeginLoc(), diag::err_atomic_builtin_must_be_pointer_intfltptr)
      << PointerArg->getType() << PointerArg->getSourceRange();
  return true;
}

// But ARM doesn't have instructions to deal with 128-bit versions.
if (Context.getTypeSize(ValType) > MaxWidth) {
  assert(MaxWidth == 64 && "Diagnostic unexpectedly inaccurate")((MaxWidth == 64 && "Diagnostic unexpectedly inaccurate"
) ? static_cast<void> (0) : __assert_fail ("MaxWidth == 64 && \"Diagnostic unexpectedly inaccurate\""
, "/build/llvm-toolchain-snapshot-9~svn362543/tools/clang/lib/Sema/SemaChecking.cpp"
, 1768, __PRETTY_FUNCTION__));
  Diag(DRE->getBeginLoc(), diag::err_atomic_exclusive_builtin_pointer_size)
      << PointerArg->getType() << PointerArg->getSourceRange();
  return true;
}

switch (ValType.getObjCLifetime()) {
case Qualifiers::OCL_None:
case Qualifiers::OCL_ExplicitNone:
  // okay
  break;

case Qualifiers::OCL_Weak:
case Qualifiers::OCL_Strong:
case Qualifiers::OCL_Autoreleasing:
  Diag(DRE->getBeginLoc(), diag::err_arc_atomic_ownership)
      << ValType << PointerArg->getSourceRange();
  return true;
}

if (IsLdrex) {
  TheCall->setType(ValType);
  return false;
}

// Initialize the argument to be stored.
ExprResult ValArg = TheCall->getArg(0);
InitializedEntity Entity = InitializedEntity::InitializeParameter(
    Context, ValType, /*consume*/ false);
ValArg = PerformCopyInitialization(Entity, SourceLocation(), ValArg);
if (ValArg.isInvalid())
  return true;
TheCall->setArg(0, ValArg.get());

// __builtin_arm_strex always returns an int. It's marked as such in the .def,
// but the custom checker bypasses all default analysis.
TheCall->setType(Context.IntTy);
return false;
1806}

1808bool Sema::CheckARMBuiltinFunctionCall(unsigned BuiltinID, CallExpr *TheCall) {
if (BuiltinID == ARM::BI__builtin_arm_ldrex ||
    BuiltinID == ARM::BI__builtin_arm_ldaex ||
    BuiltinID == ARM::BI__builtin_arm_strex ||
    BuiltinID == ARM::BI__builtin_arm_stlex) {
  return CheckARMBuiltinExclusiveCall(BuiltinID, TheCall, 64);
}

if (BuiltinID == ARM::BI__builtin_arm_prefetch) {
  return SemaBuiltinConstantArgRange(TheCall, 1, 0, 1) ||
    SemaBuiltinConstantArgRange(TheCall, 2, 0, 1);
}

if (BuiltinID == ARM::BI__builtin_arm_rsr64 ||
    BuiltinID == ARM::BI__builtin_arm_wsr64)
  return SemaBuiltinARMSpecialReg(BuiltinID, TheCall, 0, 3, false);

if (BuiltinID == ARM::BI__builtin_arm_rsr ||
    BuiltinID == ARM::BI__builtin_arm_rsrp ||
    BuiltinID == ARM::BI__builtin_arm_wsr ||
    BuiltinID == ARM::BI__builtin_arm_wsrp)
  return SemaBuiltinARMSpecialReg(BuiltinID, TheCall, 0, 5, true);

if (CheckNeonBuiltinFunctionCall(BuiltinID, TheCall))
  return true;

// For intrinsics which take an immediate value as part of the instruction,
// range check them here.
// FIXME: VFP Intrinsics should error if VFP not present.
switch (BuiltinID) {
default: return false;
case ARM::BI__builtin_arm_ssat:
  return SemaBuiltinConstantArgRange(TheCall, 1, 1, 32);
case ARM::BI__builtin_arm_usat:
  return SemaBuiltinConstantArgRange(TheCall, 1, 0, 31);
case ARM::BI__builtin_arm_ssat16:
  return SemaBuiltinConstantArgRange(TheCall, 1, 1, 16);
case ARM::BI__builtin_arm_usat16:
  return SemaBuiltinConstantArgRange(TheCall, 1, 0, 15);
case ARM::BI__builtin_arm_vcvtr_f:
case ARM::BI__builtin_arm_vcvtr_d:
  return SemaBuiltinConstantArgRange(TheCall, 1, 0, 1);
case ARM::BI__builtin_arm_dmb:
case ARM::BI__builtin_arm_dsb:
case ARM::BI__builtin_arm_isb:
case ARM::BI__builtin_arm_dbg:
  return SemaBuiltinConstantArgRange(TheCall, 0, 0, 15);
}
1856}

1858bool Sema::CheckAArch64BuiltinFunctionCall(unsigned BuiltinID,
                                       CallExpr *TheCall) {
if (BuiltinID == AArch64::BI__builtin_arm_ldrex ||
    BuiltinID == AArch64::BI__builtin_arm_ldaex ||
    BuiltinID == AArch64::BI__builtin_arm_strex ||
    BuiltinID == AArch64::BI__builtin_arm_stlex) {
  return CheckARMBuiltinExclusiveCall(BuiltinID, TheCall, 128);
}

if (BuiltinID == AArch64::BI__builtin_arm_prefetch) {
  return SemaBuiltinConstantArgRange(TheCall, 1, 0, 1) ||
    SemaBuiltinConstantArgRange(TheCall, 2, 0, 2) ||
    SemaBuiltinConstantArgRange(TheCall, 3, 0, 1) ||
    SemaBuiltinConstantArgRange(TheCall, 4, 0, 1);
}

if (BuiltinID == AArch64::BI__builtin_arm_rsr64 ||
    BuiltinID == AArch64::BI__builtin_arm_wsr64)
  return SemaBuiltinARMSpecialReg(BuiltinID, TheCall, 0, 5, true);

// Memory Tagging Extensions (MTE) Intrinsics
if (BuiltinID == AArch64::BI__builtin_arm_irg ||
    BuiltinID == AArch64::BI__builtin_arm_addg ||
    BuiltinID == AArch64::BI__builtin_arm_gmi ||
    BuiltinID == AArch64::BI__builtin_arm_ldg ||
    BuiltinID == AArch64::BI__builtin_arm_stg ||
    BuiltinID == AArch64::BI__builtin_arm_subp) {
  return SemaBuiltinARMMemoryTaggingCall(BuiltinID, TheCall);
}

if (BuiltinID == AArch64::BI__builtin_arm_rsr ||
    BuiltinID == AArch64::BI__builtin_arm_rsrp ||
    BuiltinID == AArch64::BI__builtin_arm_wsr ||
    BuiltinID == AArch64::BI__builtin_arm_wsrp)
  return SemaBuiltinARMSpecialReg(BuiltinID, TheCall, 0, 5, true);

// Only check the valid encoding range. Any constant in this range would be
// converted to a register of the form S1_2_C3_C4_5. Let the hardware throw
// an exception for incorrect registers. This matches MSVC behavior.
if (BuiltinID == AArch64::BI_ReadStatusReg ||
    BuiltinID == AArch64::BI_WriteStatusReg)
  return SemaBuiltinConstantArgRange(TheCall, 0, 0, 0x7fff);

if (BuiltinID == AArch64::BI__getReg)
  return SemaBuiltinConstantArgRange(TheCall, 0, 0, 31);

if (CheckNeonBuiltinFunctionCall(BuiltinID, TheCall))
  return true;

// For intrinsics which take an immediate value as part of the instruction,
// range check them here.
unsigned i = 0, l = 0, u = 0;
switch (BuiltinID) {
default: return false;
case AArch64::BI__builtin_arm_dmb:
case AArch64::BI__builtin_arm_dsb:
case AArch64::BI__builtin_arm_isb: l = 0; u = 15; break;
}

return SemaBuiltinConstantArgRange(TheCall, i, l, u + l);
1918}

1920bool Sema::CheckHexagonBuiltinCpu(unsigned BuiltinID, CallExpr *TheCall) {
struct BuiltinAndString {
  unsigned BuiltinID;
  const char *Str;
};

static BuiltinAndString ValidCPU[] = {
  { Hexagon::BI__builtin_HEXAGON_A6_vcmpbeq_notany, "v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_A6_vminub_RdP, "v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_F2_dfadd, "v66" },
  { Hexagon::BI__builtin_HEXAGON_F2_dfsub, "v66" },
  { Hexagon::BI__builtin_HEXAGON_M2_mnaci, "v66" },
  { Hexagon::BI__builtin_HEXAGON_M6_vabsdiffb, "v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_M6_vabsdiffub, "v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_S2_mask, "v66" },
  { Hexagon::BI__builtin_HEXAGON_S6_rol_i_p_acc, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_S6_rol_i_p_and, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_S6_rol_i_p_nac, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_S6_rol_i_p_or, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_S6_rol_i_p, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_S6_rol_i_p_xacc, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_S6_rol_i_r_acc, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_S6_rol_i_r_and, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_S6_rol_i_r_nac, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_S6_rol_i_r_or, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_S6_rol_i_r, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_S6_rol_i_r_xacc, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_S6_vsplatrbp, "v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_S6_vtrunehb_ppp, "v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_S6_vtrunohb_ppp, "v62,v65,v66" },
};

static BuiltinAndString ValidHVX[] = {
  { Hexagon::BI__builtin_HEXAGON_V6_hi, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_hi_128B, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_lo, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_lo_128B, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_extractw, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_extractw_128B, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_lvsplatb, "v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_lvsplatb_128B, "v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_lvsplath, "v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_lvsplath_128B, "v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_lvsplatw, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_lvsplatw_128B, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_pred_and, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_pred_and_128B, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_pred_and_n, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_pred_and_n_128B, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_pred_not, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_pred_not_128B, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_pred_or, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_pred_or_128B, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_pred_or_n, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_pred_or_n_128B, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_pred_scalar2, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_pred_scalar2_128B, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_pred_scalar2v2, "v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_pred_scalar2v2_128B, "v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_pred_xor, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_pred_xor_128B, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_shuffeqh, "v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_shuffeqh_128B, "v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_shuffeqw, "v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_shuffeqw_128B, "v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vabsb, "v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vabsb_128B, "v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vabsb_sat, "v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vabsb_sat_128B, "v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vabsdiffh, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vabsdiffh_128B, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vabsdiffub, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vabsdiffub_128B, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vabsdiffuh, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vabsdiffuh_128B, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vabsdiffw, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vabsdiffw_128B, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vabsh, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vabsh_128B, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vabsh_sat, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vabsh_sat_128B, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vabsw, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vabsw_128B, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vabsw_sat, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vabsw_sat_128B, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vaddb, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vaddb_128B, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vaddb_dv, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vaddb_dv_128B, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vaddbsat, "v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vaddbsat_128B, "v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vaddbsat_dv, "v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vaddbsat_dv_128B, "v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vaddcarry, "v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vaddcarry_128B, "v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vaddcarrysat, "v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vaddcarrysat_128B, "v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vaddclbh, "v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vaddclbh_128B, "v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vaddclbw, "v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vaddclbw_128B, "v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vaddh, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vaddh_128B, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vaddh_dv, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vaddh_dv_128B, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vaddhsat, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vaddhsat_128B, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vaddhsat_dv, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vaddhsat_dv_128B, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vaddhw, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vaddhw_128B, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vaddhw_acc, "v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vaddhw_acc_128B, "v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vaddubh, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vaddubh_128B, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vaddubh_acc, "v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vaddubh_acc_128B, "v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vaddubsat, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vaddubsat_128B, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vaddubsat_dv, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vaddubsat_dv_128B, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vaddububb_sat, "v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vaddububb_sat_128B, "v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vadduhsat, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vadduhsat_128B, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vadduhsat_dv, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vadduhsat_dv_128B, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vadduhw, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vadduhw_128B, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vadduhw_acc, "v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vadduhw_acc_128B, "v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vadduwsat, "v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vadduwsat_128B, "v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vadduwsat_dv, "v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vadduwsat_dv_128B, "v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vaddw, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vaddw_128B, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vaddw_dv, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vaddw_dv_128B, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vaddwsat, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vaddwsat_128B, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vaddwsat_dv, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vaddwsat_dv_128B, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_valignb, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_valignb_128B, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_valignbi, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_valignbi_128B, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vand, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vand_128B, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vandnqrt, "v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vandnqrt_128B, "v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vandnqrt_acc, "v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vandnqrt_acc_128B, "v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vandqrt, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vandqrt_128B, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vandqrt_acc, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vandqrt_acc_128B, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vandvnqv, "v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vandvnqv_128B, "v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vandvqv, "v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vandvqv_128B, "v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vandvrt, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vandvrt_128B, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vandvrt_acc, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vandvrt_acc_128B, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vaslh, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vaslh_128B, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vaslh_acc, "v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vaslh_acc_128B, "v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vaslhv, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vaslhv_128B, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vaslw, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vaslw_128B, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vaslw_acc, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vaslw_acc_128B, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vaslwv, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vaslwv_128B, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vasrh, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vasrh_128B, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vasrh_acc, "v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vasrh_acc_128B, "v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vasrhbrndsat, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vasrhbrndsat_128B, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vasrhbsat, "v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vasrhbsat_128B, "v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vasrhubrndsat, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vasrhubrndsat_128B, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vasrhubsat, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vasrhubsat_128B, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vasrhv, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vasrhv_128B, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vasr_into, "v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vasr_into_128B, "v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vasruhubrndsat, "v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vasruhubrndsat_128B, "v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vasruhubsat, "v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vasruhubsat_128B, "v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vasruwuhrndsat, "v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vasruwuhrndsat_128B, "v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vasruwuhsat, "v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vasruwuhsat_128B, "v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vasrw, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vasrw_128B, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vasrw_acc, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vasrw_acc_128B, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vasrwh, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vasrwh_128B, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vasrwhrndsat, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vasrwhrndsat_128B, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vasrwhsat, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vasrwhsat_128B, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vasrwuhrndsat, "v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vasrwuhrndsat_128B, "v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vasrwuhsat, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vasrwuhsat_128B, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vasrwv, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vasrwv_128B, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vassign, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vassign_128B, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vassignp, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vassignp_128B, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vavgb, "v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vavgb_128B, "v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vavgbrnd, "v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vavgbrnd_128B, "v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vavgh, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vavgh_128B, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vavghrnd, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vavghrnd_128B, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vavgub, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vavgub_128B, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vavgubrnd, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vavgubrnd_128B, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vavguh, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vavguh_128B, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vavguhrnd, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vavguhrnd_128B, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vavguw, "v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vavguw_128B, "v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vavguwrnd, "v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vavguwrnd_128B, "v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vavgw, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vavgw_128B, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vavgwrnd, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vavgwrnd_128B, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vcl0h, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vcl0h_128B, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vcl0w, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vcl0w_128B, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vcombine, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vcombine_128B, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vd0, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vd0_128B, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vdd0, "v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vdd0_128B, "v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vdealb, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vdealb_128B, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vdealb4w, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vdealb4w_128B, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vdealh, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vdealh_128B, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vdealvdd, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vdealvdd_128B, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vdelta, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vdelta_128B, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vdmpybus, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vdmpybus_128B, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vdmpybus_acc, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vdmpybus_acc_128B, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vdmpybus_dv, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vdmpybus_dv_128B, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vdmpybus_dv_acc, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vdmpybus_dv_acc_128B, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vdmpyhb, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vdmpyhb_128B, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vdmpyhb_acc, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vdmpyhb_acc_128B, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vdmpyhb_dv, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vdmpyhb_dv_128B, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vdmpyhb_dv_acc, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vdmpyhb_dv_acc_128B, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vdmpyhisat, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vdmpyhisat_128B, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vdmpyhisat_acc, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vdmpyhisat_acc_128B, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vdmpyhsat, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vdmpyhsat_128B, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vdmpyhsat_acc, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vdmpyhsat_acc_128B, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vdmpyhsuisat, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vdmpyhsuisat_128B, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vdmpyhsuisat_acc, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vdmpyhsuisat_acc_128B, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vdmpyhsusat, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vdmpyhsusat_128B, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vdmpyhsusat_acc, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vdmpyhsusat_acc_128B, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vdmpyhvsat, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vdmpyhvsat_128B, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vdmpyhvsat_acc, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vdmpyhvsat_acc_128B, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vdsaduh, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vdsaduh_128B, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vdsaduh_acc, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vdsaduh_acc_128B, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_veqb, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_veqb_128B, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_veqb_and, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_veqb_and_128B, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_veqb_or, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_veqb_or_128B, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_veqb_xor, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_veqb_xor_128B, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_veqh, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_veqh_128B, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_veqh_and, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_veqh_and_128B, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_veqh_or, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_veqh_or_128B, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_veqh_xor, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_veqh_xor_128B, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_veqw, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_veqw_128B, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_veqw_and, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_veqw_and_128B, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_veqw_or, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_veqw_or_128B, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_veqw_xor, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_veqw_xor_128B, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vgtb, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vgtb_128B, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vgtb_and, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vgtb_and_128B, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vgtb_or, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vgtb_or_128B, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vgtb_xor, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vgtb_xor_128B, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vgth, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vgth_128B, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vgth_and, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vgth_and_128B, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vgth_or, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vgth_or_128B, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vgth_xor, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vgth_xor_128B, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vgtub, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vgtub_128B, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vgtub_and, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vgtub_and_128B, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vgtub_or, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vgtub_or_128B, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vgtub_xor, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vgtub_xor_128B, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vgtuh, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vgtuh_128B, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vgtuh_and, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vgtuh_and_128B, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vgtuh_or, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vgtuh_or_128B, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vgtuh_xor, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vgtuh_xor_128B, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vgtuw, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vgtuw_128B, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vgtuw_and, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vgtuw_and_128B, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vgtuw_or, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vgtuw_or_128B, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vgtuw_xor, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vgtuw_xor_128B, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vgtw, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vgtw_128B, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vgtw_and, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vgtw_and_128B, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vgtw_or, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vgtw_or_128B, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vgtw_xor, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vgtw_xor_128B, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vinsertwr, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vinsertwr_128B, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vlalignb, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vlalignb_128B, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vlalignbi, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vlalignbi_128B, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vlsrb, "v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vlsrb_128B, "v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vlsrh, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vlsrh_128B, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vlsrhv, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vlsrhv_128B, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vlsrw, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vlsrw_128B, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vlsrwv, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vlsrwv_128B, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vlut4, "v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vlut4_128B, "v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vlutvvb, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vlutvvb_128B, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vlutvvbi, "v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vlutvvbi_128B, "v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vlutvvb_nm, "v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vlutvvb_nm_128B, "v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vlutvvb_oracc, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vlutvvb_oracc_128B, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vlutvvb_oracci, "v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vlutvvb_oracci_128B, "v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vlutvwh, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vlutvwh_128B, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vlutvwhi, "v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vlutvwhi_128B, "v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vlutvwh_nm, "v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vlutvwh_nm_128B, "v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vlutvwh_oracc, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vlutvwh_oracc_128B, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vlutvwh_oracci, "v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vlutvwh_oracci_128B, "v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vmaxb, "v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vmaxb_128B, "v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vmaxh, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vmaxh_128B, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vmaxub, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vmaxub_128B, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vmaxuh, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vmaxuh_128B, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vmaxw, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vmaxw_128B, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vminb, "v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vminb_128B, "v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vminh, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vminh_128B, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vminub, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vminub_128B, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vminuh, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vminuh_128B, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vminw, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vminw_128B, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vmpabus, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vmpabus_128B, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vmpabus_acc, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vmpabus_acc_128B, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vmpabusv, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vmpabusv_128B, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vmpabuu, "v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vmpabuu_128B, "v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vmpabuu_acc, "v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vmpabuu_acc_128B, "v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vmpabuuv, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vmpabuuv_128B, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vmpahb, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vmpahb_128B, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vmpahb_acc, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vmpahb_acc_128B, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vmpahhsat, "v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vmpahhsat_128B, "v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vmpauhb, "v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vmpauhb_128B, "v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vmpauhb_acc, "v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vmpauhb_acc_128B, "v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vmpauhuhsat, "v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vmpauhuhsat_128B, "v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vmpsuhuhsat, "v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vmpsuhuhsat_128B, "v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vmpybus, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vmpybus_128B, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vmpybus_acc, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vmpybus_acc_128B, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vmpybusv, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vmpybusv_128B, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vmpybusv_acc, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vmpybusv_acc_128B, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vmpybv, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vmpybv_128B, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vmpybv_acc, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vmpybv_acc_128B, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vmpyewuh, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vmpyewuh_128B, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vmpyewuh_64, "v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vmpyewuh_64_128B, "v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vmpyh, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vmpyh_128B, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vmpyh_acc, "v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vmpyh_acc_128B, "v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vmpyhsat_acc, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vmpyhsat_acc_128B, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vmpyhsrs, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vmpyhsrs_128B, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vmpyhss, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vmpyhss_128B, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vmpyhus, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vmpyhus_128B, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vmpyhus_acc, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vmpyhus_acc_128B, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vmpyhv, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vmpyhv_128B, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vmpyhv_acc, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vmpyhv_acc_128B, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vmpyhvsrs, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vmpyhvsrs_128B, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vmpyieoh, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vmpyieoh_128B, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vmpyiewh_acc, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vmpyiewh_acc_128B, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vmpyiewuh, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vmpyiewuh_128B, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vmpyiewuh_acc, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vmpyiewuh_acc_128B, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vmpyih, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vmpyih_128B, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vmpyih_acc, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vmpyih_acc_128B, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vmpyihb, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vmpyihb_128B, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vmpyihb_acc, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vmpyihb_acc_128B, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vmpyiowh, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vmpyiowh_128B, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vmpyiwb, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vmpyiwb_128B, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vmpyiwb_acc, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vmpyiwb_acc_128B, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vmpyiwh, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vmpyiwh_128B, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vmpyiwh_acc, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vmpyiwh_acc_128B, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vmpyiwub, "v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vmpyiwub_128B, "v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vmpyiwub_acc, "v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vmpyiwub_acc_128B, "v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vmpyowh, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vmpyowh_128B, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vmpyowh_64_acc, "v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vmpyowh_64_acc_128B, "v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vmpyowh_rnd, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vmpyowh_rnd_128B, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vmpyowh_rnd_sacc, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vmpyowh_rnd_sacc_128B, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vmpyowh_sacc, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vmpyowh_sacc_128B, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vmpyub, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vmpyub_128B, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vmpyub_acc, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vmpyub_acc_128B, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vmpyubv, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vmpyubv_128B, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vmpyubv_acc, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vmpyubv_acc_128B, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vmpyuh, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vmpyuh_128B, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vmpyuh_acc, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vmpyuh_acc_128B, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vmpyuhe, "v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vmpyuhe_128B, "v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vmpyuhe_acc, "v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vmpyuhe_acc_128B, "v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vmpyuhv, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vmpyuhv_128B, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vmpyuhv_acc, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vmpyuhv_acc_128B, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vmux, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vmux_128B, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vnavgb, "v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vnavgb_128B, "v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vnavgh, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vnavgh_128B, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vnavgub, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vnavgub_128B, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vnavgw, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vnavgw_128B, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vnormamth, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vnormamth_128B, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vnormamtw, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vnormamtw_128B, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vnot, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vnot_128B, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vor, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vor_128B, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vpackeb, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vpackeb_128B, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vpackeh, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vpackeh_128B, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vpackhb_sat, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vpackhb_sat_128B, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vpackhub_sat, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vpackhub_sat_128B, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vpackob, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vpackob_128B, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vpackoh, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vpackoh_128B, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vpackwh_sat, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vpackwh_sat_128B, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vpackwuh_sat, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vpackwuh_sat_128B, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vpopcounth, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vpopcounth_128B, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vprefixqb, "v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vprefixqb_128B, "v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vprefixqh, "v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vprefixqh_128B, "v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vprefixqw, "v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vprefixqw_128B, "v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vrdelta, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vrdelta_128B, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vrmpybub_rtt, "v65" },
  { Hexagon::BI__builtin_HEXAGON_V6_vrmpybub_rtt_128B, "v65" },
  { Hexagon::BI__builtin_HEXAGON_V6_vrmpybub_rtt_acc, "v65" },
  { Hexagon::BI__builtin_HEXAGON_V6_vrmpybub_rtt_acc_128B, "v65" },
  { Hexagon::BI__builtin_HEXAGON_V6_vrmpybus, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vrmpybus_128B, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vrmpybus_acc, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vrmpybus_acc_128B, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vrmpybusi, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vrmpybusi_128B, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vrmpybusi_acc, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vrmpybusi_acc_128B, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vrmpybusv, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vrmpybusv_128B, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vrmpybusv_acc, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vrmpybusv_acc_128B, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vrmpybv, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vrmpybv_128B, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vrmpybv_acc, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vrmpybv_acc_128B, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vrmpyub, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vrmpyub_128B, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vrmpyub_acc, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vrmpyub_acc_128B, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vrmpyubi, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vrmpyubi_128B, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vrmpyubi_acc, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vrmpyubi_acc_128B, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vrmpyub_rtt, "v65" },
  { Hexagon::BI__builtin_HEXAGON_V6_vrmpyub_rtt_128B, "v65" },
  { Hexagon::BI__builtin_HEXAGON_V6_vrmpyub_rtt_acc, "v65" },
  { Hexagon::BI__builtin_HEXAGON_V6_vrmpyub_rtt_acc_128B, "v65" },
  { Hexagon::BI__builtin_HEXAGON_V6_vrmpyubv, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vrmpyubv_128B, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vrmpyubv_acc, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vrmpyubv_acc_128B, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vror, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vror_128B, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vrotr, "v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vrotr_128B, "v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vroundhb, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vroundhb_128B, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vroundhub, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vroundhub_128B, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vrounduhub, "v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vrounduhub_128B, "v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vrounduwuh, "v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vrounduwuh_128B, "v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vroundwh, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vroundwh_128B, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vroundwuh, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vroundwuh_128B, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vrsadubi, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vrsadubi_128B, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vrsadubi_acc, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vrsadubi_acc_128B, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vsatdw, "v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vsatdw_128B, "v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vsathub, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vsathub_128B, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vsatuwuh, "v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vsatuwuh_128B, "v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vsatwh, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vsatwh_128B, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vsb, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vsb_128B, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vsh, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vsh_128B, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vshufeh, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vshufeh_128B, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vshuffb, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vshuffb_128B, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vshuffeb, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vshuffeb_128B, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vshuffh, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vshuffh_128B, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vshuffob, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vshuffob_128B, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vshuffvdd, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vshuffvdd_128B, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vshufoeb, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vshufoeb_128B, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vshufoeh, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vshufoeh_128B, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vshufoh, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vshufoh_128B, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vsubb, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vsubb_128B, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vsubb_dv, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vsubb_dv_128B, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vsubbsat, "v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vsubbsat_128B, "v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vsubbsat_dv, "v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vsubbsat_dv_128B, "v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vsubcarry, "v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vsubcarry_128B, "v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vsubh, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vsubh_128B, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vsubh_dv, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vsubh_dv_128B, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vsubhsat, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vsubhsat_128B, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vsubhsat_dv, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vsubhsat_dv_128B, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vsubhw, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vsubhw_128B, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vsububh, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vsububh_128B, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vsububsat, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vsububsat_128B, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vsububsat_dv, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vsububsat_dv_128B, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vsubububb_sat, "v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vsubububb_sat_128B, "v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vsubuhsat, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vsubuhsat_128B, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vsubuhsat_dv, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vsubuhsat_dv_128B, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vsubuhw, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vsubuhw_128B, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vsubuwsat, "v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vsubuwsat_128B, "v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vsubuwsat_dv, "v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vsubuwsat_dv_128B, "v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vsubw, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vsubw_128B, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vsubw_dv, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vsubw_dv_128B, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vsubwsat, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vsubwsat_128B, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vsubwsat_dv, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vsubwsat_dv_128B, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vswap, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vswap_128B, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vtmpyb, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vtmpyb_128B, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vtmpyb_acc, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vtmpyb_acc_128B, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vtmpybus, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vtmpybus_128B, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vtmpybus_acc, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vtmpybus_acc_128B, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vtmpyhb, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vtmpyhb_128B, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vtmpyhb_acc, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vtmpyhb_acc_128B, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vunpackb, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vunpackb_128B, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vunpackh, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vunpackh_128B, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vunpackob, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vunpackob_128B, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vunpackoh, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vunpackoh_128B, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vunpackub, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vunpackub_128B, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vunpackuh, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vunpackuh_128B, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vxor, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vxor_128B, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vzb, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vzb_128B, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vzh, "v60,v62,v65,v66" },
  { Hexagon::BI__builtin_HEXAGON_V6_vzh_128B, "v60,v62,v65,v66" },
};

// Sort the tables on first execution so we can binary search them.
auto SortCmp = [](const BuiltinAndString &LHS, const BuiltinAndString &RHS) {
  return LHS.BuiltinID < RHS.BuiltinID;
};
static const bool SortOnce =
    (llvm::sort(ValidCPU, SortCmp),
     llvm::sort(ValidHVX, SortCmp), true);
(void)SortOnce;
auto LowerBoundCmp = [](const BuiltinAndString &BI, unsigned BuiltinID) {
  return BI.BuiltinID < BuiltinID;
};

const TargetInfo &TI = Context.getTargetInfo();

const BuiltinAndString *FC =
    std::lower_bound(std::begin(ValidCPU), std::end(ValidCPU), BuiltinID,
                     LowerBoundCmp);
if (FC != std::end(ValidCPU) && FC->BuiltinID == BuiltinID) {
  const TargetOptions &Opts = TI.getTargetOpts();
  StringRef CPU = Opts.CPU;
  if (!CPU.empty()) {
    assert(CPU.startswith("hexagon") && "Unexpected CPU name")((CPU.startswith("hexagon") && "Unexpected CPU name")
 ? static_cast<void> (0) : __assert_fail ("CPU.startswith(\"hexagon\") && \"Unexpected CPU name\""
, "/build/llvm-toolchain-snapshot-9~svn362543/tools/clang/lib/Sema/SemaChecking.cpp"
, 2708, __PRETTY_FUNCTION__));
    CPU.consume_front("hexagon");
    SmallVector<StringRef, 3> CPUs;
    StringRef(FC->Str).split(CPUs, ',');
    if (llvm::none_of(CPUs, [CPU](StringRef S) { return S == CPU; }))
      return Diag(TheCall->getBeginLoc(),
                  diag::err_hexagon_builtin_unsupported_cpu);
  }
}

const BuiltinAndString *FH =
    std::lower_bound(std::begin(ValidHVX), std::end(ValidHVX), BuiltinID,
                     LowerBoundCmp);
if (FH != std::end(ValidHVX) && FH->BuiltinID == BuiltinID) {
  if (!TI.hasFeature("hvx"))
    return Diag(TheCall->getBeginLoc(),
                diag::err_hexagon_builtin_requires_hvx);

  SmallVector<StringRef, 3> HVXs;
  StringRef(FH->Str).split(HVXs, ',');
  bool IsValid = llvm::any_of(HVXs,
                              [&TI] (StringRef V) {
                                std::string F = "hvx" + V.str();
                                return TI.hasFeature(F);
                              });
  if (!IsValid)
    return Diag(TheCall->getBeginLoc(),
                diag::err_hexagon_builtin_unsupported_hvx);
}

return false;
2739}

2741bool Sema::CheckHexagonBuiltinArgument(unsigned BuiltinID, CallExpr *TheCall) {
struct ArgInfo {
  uint8_t OpNum;
  bool IsSigned;
  uint8_t BitWidth;
  uint8_t Align;
};
struct BuiltinInfo {
  unsigned BuiltinID;
  ArgInfo Infos[2];
};

static BuiltinInfo Infos[] = {
  { Hexagon::BI__builtin_circ_ldd,                  {{ 3, true,  4,  3 }} },
  { Hexagon::BI__builtin_circ_ldw,                  {{ 3, true,  4,  2 }} },
  { Hexagon::BI__builtin_circ_ldh,                  {{ 3, true,  4,  1 }} },
  { Hexagon::BI__builtin_circ_lduh,                 {{ 3, true,  4,  0 }} },
  { Hexagon::BI__builtin_circ_ldb,                  {{ 3, true,  4,  0 }} },
  { Hexagon::BI__builtin_circ_ldub,                 {{ 3, true,  4,  0 }} },
  { Hexagon::BI__builtin_circ_std,                  {{ 3, true,  4,  3 }} },
  { Hexagon::BI__builtin_circ_stw,                  {{ 3, true,  4,  2 }} },
  { Hexagon::BI__builtin_circ_sth,                  {{ 3, true,  4,  1 }} },
  { Hexagon::BI__builtin_circ_sthhi,                {{ 3, true,  4,  1 }} },
  { Hexagon::BI__builtin_circ_stb,                  {{ 3, true,  4,  0 }} },

  { Hexagon::BI__builtin_HEXAGON_L2_loadrub_pci,    {{ 1, true,  4,  0 }} },
  { Hexagon::BI__builtin_HEXAGON_L2_loadrb_pci,     {{ 1, true,  4,  0 }} },
  { Hexagon::BI__builtin_HEXAGON_L2_loadruh_pci,    {{ 1, true,  4,  1 }} },
  { Hexagon::BI__builtin_HEXAGON_L2_loadrh_pci,     {{ 1, true,  4,  1 }} },
  { Hexagon::BI__builtin_HEXAGON_L2_loadri_pci,     {{ 1, true,  4,  2 }} },
  { Hexagon::BI__builtin_HEXAGON_L2_loadrd_pci,     {{ 1, true,  4,  3 }} },
  { Hexagon::BI__builtin_HEXAGON_S2_storerb_pci,    {{ 1, true,  4,  0 }} },
  { Hexagon::BI__builtin_HEXAGON_S2_storerh_pci,    {{ 1, true,  4,  1 }} },
  { Hexagon::BI__builtin_HEXAGON_S2_storerf_pci,    {{ 1, true,  4,  1 }} },
  { Hexagon::BI__builtin_HEXAGON_S2_storeri_pci,    {{ 1, true,  4,  2 }} },
  { Hexagon::BI__builtin_HEXAGON_S2_storerd_pci,    {{ 1, true,  4,  3 }} },

  { Hexagon::BI__builtin_HEXAGON_A2_combineii,      {{ 1, true,  8,  0 }} },
  { Hexagon::BI__builtin_HEXAGON_A2_tfrih,          {{ 1, false, 16, 0 }} },
  { Hexagon::BI__builtin_HEXAGON_A2_tfril,          {{ 1, false, 16, 0 }} },
  { Hexagon::BI__builtin_HEXAGON_A2_tfrpi,          {{ 0, true,  8,  0 }} },
  { Hexagon::BI__builtin_HEXAGON_A4_bitspliti,      {{ 1, false, 5,  0 }} },
  { Hexagon::BI__builtin_HEXAGON_A4_cmpbeqi,        {{ 1, false, 8,  0 }} },
  { Hexagon::BI__builtin_HEXAGON_A4_cmpbgti,        {{ 1, true,  8,  0 }} },
  { Hexagon::BI__builtin_HEXAGON_A4_cround_ri,      {{ 1, false, 5,  0 }} },
  { Hexagon::BI__builtin_HEXAGON_A4_round_ri,       {{ 1, false, 5,  0 }} },
  { Hexagon::BI__builtin_HEXAGON_A4_round_ri_sat,   {{ 1, false, 5,  0 }} },
  { Hexagon::BI__builtin_HEXAGON_A4_vcmpbeqi,       {{ 1, false, 8,  0 }} },
  { Hexagon::BI__builtin_HEXAGON_A4_vcmpbgti,       {{ 1, true,  8,  0 }} },
  { Hexagon::BI__builtin_HEXAGON_A4_vcmpbgtui,      {{ 1, false, 7,  0 }} },
  { Hexagon::BI__builtin_HEXAGON_A4_vcmpheqi,       {{ 1, true,  8,  0 }} },
  { Hexagon::BI__builtin_HEXAGON_A4_vcmphgti,       {{ 1, true,  8,  0 }} },
  { Hexagon::BI__builtin_HEXAGON_A4_vcmphgtui,      {{ 1, false, 7,  0 }} },
  { Hexagon::BI__builtin_HEXAGON_A4_vcmpweqi,       {{ 1, true,  8,  0 }} },
  { Hexagon::BI__builtin_HEXAGON_A4_vcmpwgti,       {{ 1, true,  8,  0 }} },
  { Hexagon::BI__builtin_HEXAGON_A4_vcmpwgtui,      {{ 1, false, 7,  0 }} },
  { Hexagon::BI__builtin_HEXAGON_C2_bitsclri,       {{ 1, false, 6,  0 }} },
  { Hexagon::BI__builtin_HEXAGON_C2_muxii,          {{ 2, true,  8,  0 }} },
  { Hexagon::BI__builtin_HEXAGON_C4_nbitsclri,      {{ 1, false, 6,  0 }} },
  { Hexagon::BI__builtin_HEXAGON_F2_dfclass,        {{ 1, false, 5,  0 }} },
  { Hexagon::BI__builtin_HEXAGON_F2_dfimm_n,        {{ 0, false, 10, 0 }} },
  { Hexagon::BI__builtin_HEXAGON_F2_dfimm_p,        {{ 0, false, 10, 0 }} },
  { Hexagon::BI__builtin_HEXAGON_F2_sfclass,        {{ 1, false, 5,  0 }} },
  { Hexagon::BI__builtin_HEXAGON_F2_sfimm_n,        {{ 0, false, 10, 0 }} },
  { Hexagon::BI__builtin_HEXAGON_F2_sfimm_p,        {{ 0, false, 10, 0 }} },
  { Hexagon::BI__builtin_HEXAGON_M4_mpyri_addi,     {{ 2, false, 6,  0 }} },
  { Hexagon::BI__builtin_HEXAGON_M4_mpyri_addr_u2,  {{ 1, false, 6,  2 }} },
  { Hexagon::BI__builtin_HEXAGON_S2_addasl_rrri,    {{ 2, false, 3,  0 }} },
  { Hexagon::BI__builtin_HEXAGON_S2_asl_i_p_acc,    {{ 2, false, 6,  0 }} },
  { Hexagon::BI__builtin_HEXAGON_S2_asl_i_p_and,    {{ 2, false, 6,  0 }} },
  { Hexagon::BI__builtin_HEXAGON_S2_asl_i_p,        {{ 1, false, 6,  0 }} },
  { Hexagon::BI__builtin_HEXAGON_S2_asl_i_p_nac,    {{ 2, false, 6,  0 }} },
  { Hexagon::BI__builtin_HEXAGON_S2_asl_i_p_or,     {{ 2, false, 6,  0 }} },
  { Hexagon::BI__builtin_HEXAGON_S2_asl_i_p_xacc,   {{ 2, false, 6,  0 }} },
  { Hexagon::BI__builtin_HEXAGON_S2_asl_i_r_acc,    {{ 2, false, 5,  0 }} },
  { Hexagon::BI__builtin_HEXAGON_S2_asl_i_r_and,    {{ 2, false, 5,  0 }} },
  { Hexagon::BI__builtin_HEXAGON_S2_asl_i_r,        {{ 1, false, 5,  0 }} },
  { Hexagon::BI__builtin_HEXAGON_S2_asl_i_r_nac,    {{ 2, false, 5,  0 }} },
  { Hexagon::BI__builtin_HEXAGON_S2_asl_i_r_or,     {{ 2, false, 5,  0 }} },
  { Hexagon::BI__builtin_HEXAGON_S2_asl_i_r_sat,    {{ 1, false, 5,  0 }} },
  { Hexagon::BI__builtin_HEXAGON_S2_asl_i_r_xacc,   {{ 2, false, 5,  0 }} },
  { Hexagon::BI__builtin_HEXAGON_S2_asl_i_vh,       {{ 1, false, 4,  0 }} },
  { Hexagon::BI__builtin_HEXAGON_S2_asl_i_vw,       {{ 1, false, 5,  0 }} },
  { Hexagon::BI__builtin_HEXAGON_S2_asr_i_p_acc,    {{ 2, false, 6,  0 }} },
  { Hexagon::BI__builtin_HEXAGON_S2_asr_i_p_and,    {{ 2, false, 6,  0 }} },
  { Hexagon::BI__builtin_HEXAGON_S2_asr_i_p,        {{ 1, false, 6,  0 }} },
  { Hexagon::BI__builtin_HEXAGON_S2_asr_i_p_nac,    {{ 2, false, 6,  0 }} },
  { Hexagon::BI__builtin_HEXAGON_S2_asr_i_p_or,     {{ 2, false, 6,  0 }} },
  { Hexagon::BI__builtin_HEXAGON_S2_asr_i_p_rnd_goodsyntax,
                                                    {{ 1, false, 6,  0 }} },
  { Hexagon::BI__builtin_HEXAGON_S2_asr_i_p_rnd,    {{ 1, false, 6,  0 }} },
  { Hexagon::BI__builtin_HEXAGON_S2_asr_i_r_acc,    {{ 2, false, 5,  0 }} },
  { Hexagon::BI__builtin_HEXAGON_S2_asr_i_r_and,    {{ 2, false, 5,  0 }} },
  { Hexagon::BI__builtin_HEXAGON_S2_asr_i_r,        {{ 1, false, 5,  0 }} },
  { Hexagon::BI__builtin_HEXAGON_S2_asr_i_r_nac,    {{ 2, false, 5,  0 }} },
  { Hexagon::BI__builtin_HEXAGON_S2_asr_i_r_or,     {{ 2, false, 5,  0 }} },
  { Hexagon::BI__builtin_HEXAGON_S2_asr_i_r_rnd_goodsyntax,
                                                    {{ 1, false, 5,  0 }} },
  { Hexagon::BI__builtin_HEXAGON_S2_asr_i_r_rnd,    {{ 1, false, 5,  0 }} },
  { Hexagon::BI__builtin_HEXAGON_S2_asr_i_svw_trun, {{ 1, false, 5,  0 }} },
  { Hexagon::BI__builtin_HEXAGON_S2_asr_i_vh,       {{ 1, false, 4,  0 }} },
  { Hexagon::BI__builtin_HEXAGON_S2_asr_i_vw,       {{ 1, false, 5,  0 }} },
  { Hexagon::BI__builtin_HEXAGON_S2_clrbit_i,       {{ 1, false, 5,  0 }} },
  { Hexagon::BI__builtin_HEXAGON_S2_extractu,       {{ 1, false, 5,  0 },
                                                     { 2, false, 5,  0 }} },
  { Hexagon::BI__builtin_HEXAGON_S2_extractup,      {{ 1, false, 6,  0 },
                                                     { 2, false, 6,  0 }} },
  { Hexagon::BI__builtin_HEXAGON_S2_insert,         {{ 2, false, 5,  0 },
                                                     { 3, false, 5,  0 }} },
  { Hexagon::BI__builtin_HEXAGON_S2_insertp,        {{ 2, false, 6,  0 },
                                                     { 3, false, 6,  0 }} },
  { Hexagon::BI__builtin_HEXAGON_S2_lsr_i_p_acc,    {{ 2, false, 6,  0 }} },
  { Hexagon::BI__builtin_HEXAGON_S2_lsr_i_p_and,    {{ 2, false, 6,  0 }} },
  { Hexagon::BI__builtin_HEXAGON_S2_lsr_i_p,        {{ 1, false, 6,  0 }} },
  { Hexagon::BI__builtin_HEXAGON_S2_lsr_i_p_nac,    {{ 2, false, 6,  0 }} },
  { Hexagon::BI__builtin_HEXAGON_S2_lsr_i_p_or,     {{ 2, false, 6,  0 }} },
  { Hexagon::BI__builtin_HEXAGON_S2_lsr_i_p_xacc,   {{ 2, false, 6,  0 }} },
  { Hexagon::BI__builtin_HEXAGON_S2_lsr_i_r_acc,    {{ 2, false, 5,  0 }} },
  { Hexagon::BI__builtin_HEXAGON_S2_lsr_i_r_and,    {{ 2, false, 5,  0 }} },
  { Hexagon::BI__builtin_HEXAGON_S2_lsr_i_r,        {{ 1, false, 5,  0 }} },
  { Hexagon::BI__builtin_HEXAGON_S2_lsr_i_r_nac,    {{ 2, false, 5,  0 }} },
  { Hexagon::BI__builtin_HEXAGON_S2_lsr_i_r_or,     {{ 2, false, 5,  0 }} },
  { Hexagon::BI__builtin_HEXAGON_S2_lsr_i_r_xacc,   {{ 2, false, 5,  0 }} },
  { Hexagon::BI__builtin_HEXAGON_S2_lsr_i_vh,       {{ 1, false, 4,  0 }} },
  { Hexagon::BI__builtin_HEXAGON_S2_lsr_i_vw,       {{ 1, false, 5,  0 }} },
  { Hexagon::BI__builtin_HEXAGON_S2_setbit_i,       {{ 1, false, 5,  0 }} },
  { Hexagon::BI__builtin_HEXAGON_S2_tableidxb_goodsyntax,
                                                    {{ 2, false, 4,  0 },
                                                     { 3, false, 5,  0 }} },
  { Hexagon::BI__builtin_HEXAGON_S2_tableidxd_goodsyntax,
                                                    {{ 2, false, 4,  0 },
                                                     { 3, false, 5,  0 }} },
  { Hexagon::BI__builtin_HEXAGON_S2_tableidxh_goodsyntax,
                                                    {{ 2, false, 4,  0 },
                                                     { 3, false, 5,  0 }} },
  { Hexagon::BI__builtin_HEXAGON_S2_tableidxw_goodsyntax,
                                                    {{ 2, false, 4,  0 },
                                                     { 3, false, 5,  0 }} },
  { Hexagon::BI__builtin_HEXAGON_S2_togglebit_i,    {{ 1, false, 5,  0 }} },
  { Hexagon::BI__builtin_HEXAGON_S2_tstbit_i,       {{ 1, false, 5,  0 }} },
  { Hexagon::BI__builtin_HEXAGON_S2_valignib,       {{ 2, false, 3,  0 }} },
  { Hexagon::BI__builtin_HEXAGON_S2_vspliceib,      {{ 2, false, 3,  0 }} },
  { Hexagon::BI__builtin_HEXAGON_S4_addi_asl_ri,    {{ 2, false, 5,  0 }} },
  { Hexagon::BI__builtin_HEXAGON_S4_addi_lsr_ri,    {{ 2, false, 5,  0 }} },
  { Hexagon::BI__builtin_HEXAGON_S4_andi_asl_ri,    {{ 2, false, 5,  0 }} },
  { Hexagon::BI__builtin_HEXAGON_S4_andi_lsr_ri,    {{ 2, false, 5,  0 }} },
  { Hexagon::BI__builtin_HEXAGON_S4_clbaddi,        {{ 1, true , 6,  0 }} },
  { Hexagon::BI__builtin_HEXAGON_S4_clbpaddi,       {{ 1, true,  6,  0 }} },
  { Hexagon::BI__builtin_HEXAGON_S4_extract,        {{ 1, false, 5,  0 },
                                                     { 2, false, 5,  0 }} },
  { Hexagon::BI__builtin_HEXAGON_S4_extractp,       {{ 1, false, 6,  0 },
                                                     { 2, false, 6,  0 }} },
  { Hexagon::BI__builtin_HEXAGON_S4_lsli,           {{ 0, true,  6,  0 }} },
  { Hexagon::BI__builtin_HEXAGON_S4_ntstbit_i,      {{ 1, false, 5,  0 }} },
  { Hexagon::BI__builtin_HEXAGON_S4_ori_asl_ri,     {{ 2, false, 5,  0 }} },
  { Hexagon::BI__builtin_HEXAGON_S4_ori_lsr_ri,     {{ 2, false, 5,  0 }} },
  { Hexagon::BI__builtin_HEXAGON_S4_subi_asl_ri,    {{ 2, false, 5,  0 }} },
  { Hexagon::BI__builtin_HEXAGON_S4_subi_lsr_ri,    {{ 2, false, 5,  0 }} },
  { Hexagon::BI__builtin_HEXAGON_S4_vrcrotate_acc,  {{ 3, false, 2,  0 }} },
  { Hexagon::BI__builtin_HEXAGON_S4_vrcrotate,      {{ 2, false, 2,  0 }} },
  { Hexagon::BI__builtin_HEXAGON_S5_asrhub_rnd_sat_goodsyntax,
                                                    {{ 1, false, 4,  0 }} },
  { Hexagon::BI__builtin_HEXAGON_S5_asrhub_sat,     {{ 1, false, 4,  0 }} },
  { Hexagon::BI__builtin_HEXAGON_S5_vasrhrnd_goodsyntax,
                                                    {{ 1, false, 4,  0 }} },
  { Hexagon::BI__builtin_HEXAGON_S6_rol_i_p,        {{ 1, false, 6,  0 }} },
  { Hexagon::BI__builtin_HEXAGON_S6_rol_i_p_acc,    {{ 2, false, 6,  0 }} },
  { Hexagon::BI__builtin_HEXAGON_S6_rol_i_p_and,    {{ 2, false, 6,  0 }} },
  { Hexagon::BI__builtin_HEXAGON_S6_rol_i_p_nac,    {{ 2, false, 6,  0 }} },
  { Hexagon::BI__builtin_HEXAGON_S6_rol_i_p_or,     {{ 2, false, 6,  0 }} },
  { Hexagon::BI__builtin_HEXAGON_S6_rol_i_p_xacc,   {{ 2, false, 6,  0 }} },
  { Hexagon::BI__builtin_HEXAGON_S6_rol_i_r,        {{ 1, false, 5,  0 }} },
  { Hexagon::BI__builtin_HEXAGON_S6_rol_i_r_acc,    {{ 2, false, 5,  0 }} },
  { Hexagon::BI__builtin_HEXAGON_S6_rol_i_r_and,    {{ 2, false, 5,  0 }} },
  { Hexagon::BI__builtin_HEXAGON_S6_rol_i_r_nac,    {{ 2, false, 5,  0 }} },
  { Hexagon::BI__builtin_HEXAGON_S6_rol_i_r_or,     {{ 2, false, 5,  0 }} },
  { Hexagon::BI__builtin_HEXAGON_S6_rol_i_r_xacc,   {{ 2, false, 5,  0 }} },
  { Hexagon::BI__builtin_HEXAGON_V6_valignbi,       {{ 2, false, 3,  0 }} },
  { Hexagon::BI__builtin_HEXAGON_V6_valignbi_128B,  {{ 2, false, 3,  0 }} },
  { Hexagon::BI__builtin_HEXAGON_V6_vlalignbi,      {{ 2, false, 3,  0 }} },
  { Hexagon::BI__builtin_HEXAGON_V6_vlalignbi_128B, {{ 2, false, 3,  0 }} },
  { Hexagon::BI__builtin_HEXAGON_V6_vrmpybusi,      {{ 2, false, 1,  0 }} },
  { Hexagon::BI__builtin_HEXAGON_V6_vrmpybusi_128B, {{ 2, false, 1,  0 }} },
  { Hexagon::BI__builtin_HEXAGON_V6_vrmpybusi_acc,  {{ 3, false, 1,  0 }} },
  { Hexagon::BI__builtin_HEXAGON_V6_vrmpybusi_acc_128B,
                                                    {{ 3, false, 1,  0 }} },
  { Hexagon::BI__builtin_HEXAGON_V6_vrmpyubi,       {{ 2, false, 1,  0 }} },
  { Hexagon::BI__builtin_HEXAGON_V6_vrmpyubi_128B,  {{ 2, false, 1,  0 }} },
  { Hexagon::BI__builtin_HEXAGON_V6_vrmpyubi_acc,   {{ 3, false, 1,  0 }} },
  { Hexagon::BI__builtin_HEXAGON_V6_vrmpyubi_acc_128B,
                                                    {{ 3, false, 1,  0 }} },
  { Hexagon::BI__builtin_HEXAGON_V6_vrsadubi,       {{ 2, false, 1,  0 }} },
  { Hexagon::BI__builtin_HEXAGON_V6_vrsadubi_128B,  {{ 2, false, 1,  0 }} },
  { Hexagon::BI__builtin_HEXAGON_V6_vrsadubi_acc,   {{ 3, false, 1,  0 }} },
  { Hexagon::BI__builtin_HEXAGON_V6_vrsadubi_acc_128B,
                                                    {{ 3, false, 1,  0 }} },
};

// Use a dynamically initialized static to sort the table exactly once on
// first run.
static const bool SortOnce =
    (llvm::sort(Infos,
               [](const BuiltinInfo &LHS, const BuiltinInfo &RHS) {
                 return LHS.BuiltinID < RHS.BuiltinID;
               }),
     true);
(void)SortOnce;

const BuiltinInfo *F =
    std::lower_bound(std::begin(Infos), std::end(Infos), BuiltinID,
                     [](const BuiltinInfo &BI, unsigned BuiltinID) {
                       return BI.BuiltinID < BuiltinID;
                     });
if (F == std::end(Infos) || F->BuiltinID != BuiltinID)
  return false;

bool Error = false;

for (const ArgInfo &A : F->Infos) {
  // Ignore empty ArgInfo elements.
  if (A.BitWidth == 0)
    continue;

  int32_t Min = A.IsSigned ? -(1 << (A.BitWidth - 1)) : 0;
  int32_t Max = (1 << (A.IsSigned ? A.BitWidth - 1 : A.BitWidth)) - 1;
  if (!A.Align) {
    Error |= SemaBuiltinConstantArgRange(TheCall, A.OpNum, Min, Max);
  } else {
    unsigned M = 1 << A.Align;
    Min *= M;
    Max *= M;
    Error |= SemaBuiltinConstantArgRange(TheCall, A.OpNum, Min, Max) |
             SemaBuiltinConstantArgMultiple(TheCall, A.OpNum, M);
  }
}
return Error;
2977}

2979bool Sema::CheckHexagonBuiltinFunctionCall(unsigned BuiltinID,
                                         CallExpr *TheCall) {
return CheckHexagonBuiltinCpu(BuiltinID, TheCall) ||
       CheckHexagonBuiltinArgument(BuiltinID, TheCall);
2983}


2986// CheckMipsBuiltinFunctionCall - Checks the constant value passed to the
2987// intrinsic is correct. The switch statement is ordered by DSP, MSA. The
2988// ordering for DSP is unspecified. MSA is ordered by the data format used
2989// by the underlying instruction i.e., df/m, df/n and then by size.
2990//
2991// FIXME: The size tests here should instead be tablegen'd along with the
2992//        definitions from include/clang/Basic/BuiltinsMips.def.
2993// FIXME: GCC is strict on signedness for some of these intrinsics, we should
2994//        be too.
2995bool Sema::CheckMipsBuiltinFunctionCall(unsigned BuiltinID, CallExpr *TheCall) {
unsigned i = 0, l = 0, u = 0, m = 0;
switch (BuiltinID) {
default: return false;
case Mips::BI__builtin_mips_wrdsp: i = 1; l = 0; u = 63; break;
case Mips::BI__builtin_mips_rddsp: i = 0; l = 0; u = 63; break;
case Mips::BI__builtin_mips_append: i = 2; l = 0; u = 31; break;
case Mips::BI__builtin_mips_balign: i = 2; l = 0; u = 3; break;
case Mips::BI__builtin_mips_precr_sra_ph_w: i = 2; l = 0; u = 31; break;
case Mips::BI__builtin_mips_precr_sra_r_ph_w: i = 2; l = 0; u = 31; break;
case Mips::BI__builtin_mips_prepend: i = 2; l = 0; u = 31; break;
// MSA intrinsics. Instructions (which the intrinsics maps to) which use the
// df/m field.
// These intrinsics take an unsigned 3 bit immediate.
case Mips::BI__builtin_msa_bclri_b:
case Mips::BI__builtin_msa_bnegi_b:
case Mips::BI__builtin_msa_bseti_b:
case Mips::BI__builtin_msa_sat_s_b:
case Mips::BI__builtin_msa_sat_u_b:
case Mips::BI__builtin_msa_slli_b:
case Mips::BI__builtin_msa_srai_b:
case Mips::BI__builtin_msa_srari_b:
case Mips::BI__builtin_msa_srli_b:
case Mips::BI__builtin_msa_srlri_b: i = 1; l = 0; u = 7; break;
case Mips::BI__builtin_msa_binsli_b:
case Mips::BI__builtin_msa_binsri_b: i = 2; l = 0; u = 7; break;
// These intrinsics take an unsigned 4 bit immediate.
case Mips::BI__builtin_msa_bclri_h:
case Mips::BI__builtin_msa_bnegi_h:
case Mips::BI__builtin_msa_bseti_h:
case Mips::BI__builtin_msa_sat_s_h:
case Mips::BI__builtin_msa_sat_u_h:
case Mips::BI__builtin_msa_slli_h:
case Mips::BI__builtin_msa_srai_h:
case Mips::BI__builtin_msa_srari_h:
case Mips::BI__builtin_msa_srli_h:
case Mips::BI__builtin_msa_srlri_h: i = 1; l = 0; u = 15; break;
case Mips::BI__builtin_msa_binsli_h:
case Mips::BI__builtin_msa_binsri_h: i = 2; l = 0; u = 15; break;
// These intrinsics take an unsigned 5 bit immediate.
// The first block of intrinsics actually have an unsigned 5 bit field,
// not a df/n field.
case Mips::BI__builtin_msa_cfcmsa:
case Mips::BI__builtin_msa_ctcmsa: i = 0; l = 0; u = 31; break;
case Mips::BI__builtin_msa_clei_u_b:
case Mips::BI__builtin_msa_clei_u_h:
case Mips::BI__builtin_msa_clei_u_w:
case Mips::BI__builtin_msa_clei_u_d:
case Mips::BI__builtin_msa_clti_u_b:
case Mips::BI__builtin_msa_clti_u_h:
case Mips::BI__builtin_msa_clti_u_w:
case Mips::BI__builtin_msa_clti_u_d:
case Mips::BI__builtin_msa_maxi_u_b:
case Mips::BI__builtin_msa_maxi_u_h:
case Mips::BI__builtin_msa_maxi_u_w:
case Mips::BI__builtin_msa_maxi_u_d:
case Mips::BI__builtin_msa_mini_u_b:
case Mips::BI__builtin_msa_mini_u_h:
case Mips::BI__builtin_msa_mini_u_w:
case Mips::BI__builtin_msa_mini_u_d:
case Mips::BI__builtin_msa_addvi_b:
case Mips::BI__builtin_msa_addvi_h:
case Mips::BI__builtin_msa_addvi_w:
case Mips::BI__builtin_msa_addvi_d:
case Mips::BI__builtin_msa_bclri_w:
case Mips::BI__builtin_msa_bnegi_w:
case Mips::BI__builtin_msa_bseti_w:
case Mips::BI__builtin_msa_sat_s_w:
case Mips::BI__builtin_msa_sat_u_w:
case Mips::BI__builtin_msa_slli_w:
case Mips::BI__builtin_msa_srai_w:
case Mips::BI__builtin_msa_srari_w:
case Mips::BI__builtin_msa_srli_w:
case Mips::BI__builtin_msa_srlri_w:
case Mips::BI__builtin_msa_subvi_b:
case Mips::BI__builtin_msa_subvi_h:
case Mips::BI__builtin_msa_subvi_w:
case Mips::BI__builtin_msa_subvi_d: i = 1; l = 0; u = 31; break;
case Mips::BI__builtin_msa_binsli_w:
case Mips::BI__builtin_msa_binsri_w: i = 2; l = 0; u = 31; break;
// These intrinsics take an unsigned 6 bit immediate.
case Mips::BI__builtin_msa_bclri_d:
case Mips::BI__builtin_msa_bnegi_d:
case Mips::BI__builtin_msa_bseti_d:
case Mips::BI__builtin_msa_sat_s_d:
case Mips::BI__builtin_msa_sat_u_d:
case Mips::BI__builtin_msa_slli_d:
case Mips::BI__builtin_msa_srai_d:
case Mips::BI__builtin_msa_srari_d:
case Mips::BI__builtin_msa_srli_d:
case Mips::BI__builtin_msa_srlri_d: i = 1; l = 0; u = 63; break;
case Mips::BI__builtin_msa_binsli_d:
case Mips::BI__builtin_msa_binsri_d: i = 2; l = 0; u = 63; break;
// These intrinsics take a signed 5 bit immediate.
case Mips::BI__builtin_msa_ceqi_b:
case Mips::BI__builtin_msa_ceqi_h:
case Mips::BI__builtin_msa_ceqi_w:
case Mips::BI__builtin_msa_ceqi_d:
case Mips::BI__builtin_msa_clti_s_b:
case Mips::BI__builtin_msa_clti_s_h:
case Mips::BI__builtin_msa_clti_s_w:
case Mips::BI__builtin_msa_clti_s_d:
case Mips::BI__builtin_msa_clei_s_b:
case Mips::BI__builtin_msa_clei_s_h:
case Mips::BI__builtin_msa_clei_s_w:
case Mips::BI__builtin_msa_clei_s_d:
case Mips::BI__builtin_msa_maxi_s_b:
case Mips::BI__builtin_msa_maxi_s_h:
case Mips::BI__builtin_msa_maxi_s_w:
case Mips::BI__builtin_msa_maxi_s_d:
case Mips::BI__builtin_msa_mini_s_b:
case Mips::BI__builtin_msa_mini_s_h:
case Mips::BI__builtin_msa_mini_s_w:
case Mips::BI__builtin_msa_mini_s_d: i = 1; l = -16; u = 15; break;
// These intrinsics take an unsigned 8 bit immediate.
case Mips::BI__builtin_msa_andi_b:
case Mips::BI__builtin_msa_nori_b:
case Mips::BI__builtin_msa_ori_b:
case Mips::BI__builtin_msa_shf_b:
case Mips::BI__builtin_msa_shf_h:
case Mips::BI__builtin_msa_shf_w:
case Mips::BI__builtin_msa_xori_b: i = 1; l = 0; u = 255; break;
case Mips::BI__builtin_msa_bseli_b:
case Mips::BI__builtin_msa_bmnzi_b:
case Mips::BI__builtin_msa_bmzi_b: i = 2; l = 0; u = 255; break;
// df/n format
// These intrinsics take an unsigned 4 bit immediate.
case Mips::BI__builtin_msa_copy_s_b:
case Mips::BI__builtin_msa_copy_u_b:
case Mips::BI__builtin_msa_insve_b:
case Mips::BI__builtin_msa_splati_b: i = 1; l = 0; u = 15; break;
case Mips::BI__builtin_msa_sldi_b: i = 2; l = 0; u = 15; break;
// These intrinsics take an unsigned 3 bit immediate.
case Mips::BI__builtin_msa_copy_s_h:
case Mips::BI__builtin_msa_copy_u_h:
case Mips::BI__builtin_msa_insve_h:
case Mips::BI__builtin_msa_splati_h: i = 1; l = 0; u = 7; break;
case Mips::BI__builtin_msa_sldi_h: i = 2; l = 0; u = 7; break;
// These intrinsics take an unsigned 2 bit immediate.
case Mips::BI__builtin_msa_copy_s_w:
case Mips::BI__builtin_msa_copy_u_w:
case Mips::BI__builtin_msa_insve_w:
case Mips::BI__builtin_msa_splati_w: i = 1; l = 0; u = 3; break;
case Mips::BI__builtin_msa_sldi_w: i = 2; l = 0; u = 3; break;
// These intrinsics take an unsigned 1 bit immediate.
case Mips::BI__builtin_msa_copy_s_d:
case Mips::BI__builtin_msa_copy_u_d:
case Mips::BI__builtin_msa_insve_d:
case Mips::BI__builtin_msa_splati_d: i = 1; l = 0; u = 1; break;
case Mips::BI__builtin_msa_sldi_d: i = 2; l = 0; u = 1; break;
// Memory offsets and immediate loads.
// These intrinsics take a signed 10 bit immediate.
case Mips::BI__builtin_msa_ldi_b: i = 0; l = -128; u = 255; break;
case Mips::BI__builtin_msa_ldi_h:
case Mips::BI__builtin_msa_ldi_w:
case Mips::BI__builtin_msa_ldi_d: i = 0; l = -512; u = 511; break;
case Mips::BI__builtin_msa_ld_b: i = 1; l = -512; u = 511; m = 1; break;
case Mips::BI__builtin_msa_ld_h: i = 1; l = -1024; u = 1022; m = 2; break;
case Mips::BI__builtin_msa_ld_w: i = 1; l = -2048; u = 2044; m = 4; break;
case Mips::BI__builtin_msa_ld_d: i = 1; l = -4096; u = 4088; m = 8; break;
case Mips::BI__builtin_msa_st_b: i = 2; l = -512; u = 511; m = 1; break;
case Mips::BI__builtin_msa_st_h: i = 2; l = -1024; u = 1022; m = 2; break;
case Mips::BI__builtin_msa_st_w: i = 2; l = -2048; u = 2044; m = 4; break;
case Mips::BI__builtin_msa_st_d: i = 2; l = -4096; u = 4088; m = 8; break;
}

if (!m)
  return SemaBuiltinConstantArgRange(TheCall, i, l, u);

return SemaBuiltinConstantArgRange(TheCall, i, l, u) ||
       SemaBuiltinConstantArgMultiple(TheCall, i, m);
3166}

3168bool Sema::CheckPPCBuiltinFunctionCall(unsigned BuiltinID, CallExpr *TheCall) {
unsigned i = 0, l = 0, u = 0;
bool Is64BitBltin = BuiltinID == PPC::BI__builtin_divde ||
                    BuiltinID == PPC::BI__builtin_divdeu ||
                    BuiltinID == PPC::BI__builtin_bpermd;
bool IsTarget64Bit = Context.getTargetInfo()
                            .getTypeWidth(Context
                                          .getTargetInfo()
                                          .getIntPtrType()) == 64;
bool IsBltinExtDiv = BuiltinID == PPC::BI__builtin_divwe ||
                     BuiltinID == PPC::BI__builtin_divweu ||
                     BuiltinID == PPC::BI__builtin_divde ||
                     BuiltinID == PPC::BI__builtin_divdeu;

if (Is64BitBltin && !IsTarget64Bit)
  return Diag(TheCall->getBeginLoc(), diag::err_64_bit_builtin_32_bit_tgt)
         << TheCall->getSourceRange();

if ((IsBltinExtDiv && !Context.getTargetInfo().hasFeature("extdiv")) ||
    (BuiltinID == PPC::BI__builtin_bpermd &&
     !Context.getTargetInfo().hasFeature("bpermd")))
  return Diag(TheCall->getBeginLoc(), diag::err_ppc_builtin_only_on_pwr7)
         << TheCall->getSourceRange();

auto SemaVSXCheck = [&](CallExpr *TheCall) -> bool {
  if (!Context.getTargetInfo().hasFeature("vsx"))
    return Diag(TheCall->getBeginLoc(), diag::err_ppc_builtin_only_on_pwr7)
           << TheCall->getSourceRange();
  return false;
};

switch (BuiltinID) {
default: return false;
case PPC::BI__builtin_altivec_crypto_vshasigmaw:
case PPC::BI__builtin_altivec_crypto_vshasigmad:
  return SemaBuiltinConstantArgRange(TheCall, 1, 0, 1) ||
         SemaBuiltinConstantArgRange(TheCall, 2, 0, 15);
case PPC::BI__builtin_tbegin:
case PPC::BI__builtin_tend: i = 0; l = 0; u = 1; break;
case PPC::BI__builtin_tsr: i = 0; l = 0; u = 7; break;
case PPC::BI__builtin_tabortwc:
case PPC::BI__builtin_tabortdc: i = 0; l = 0; u = 31; break;
case PPC::BI__builtin_tabortwci:
case PPC::BI__builtin_tabortdci:
  return SemaBuiltinConstantArgRange(TheCall, 0, 0, 31) ||
         SemaBuiltinConstantArgRange(TheCall, 2, 0, 31);
case PPC::BI__builtin_vsx_xxpermdi:
case PPC::BI__builtin_vsx_xxsldwi:
  return SemaBuiltinVSX(TheCall);
case PPC::BI__builtin_unpack_vector_int128:
  return SemaVSXCheck(TheCall) ||
         SemaBuiltinConstantArgRange(TheCall, 1, 0, 1);
case PPC::BI__builtin_pack_vector_int128:
  return SemaVSXCheck(TheCall);
}
return SemaBuiltinConstantArgRange(TheCall, i, l, u);
3224}

3226bool Sema::CheckSystemZBuiltinFunctionCall(unsigned BuiltinID,
                                         CallExpr *TheCall) {
if (BuiltinID == SystemZ::BI__builtin_tabort) {
  Expr *Arg = TheCall->getArg(0);
  llvm::APSInt AbortCode(32);
  if (Arg->isIntegerConstantExpr(AbortCode, Context) &&
      AbortCode.getSExtValue() >= 0 && AbortCode.getSExtValue() < 256)
    return Diag(Arg->getBeginLoc(), diag::err_systemz_invalid_tabort_code)
           << Arg->getSourceRange();
}

// For intrinsics which take an immediate value as part of the instruction,
// range check them here.
unsigned i = 0, l = 0, u = 0;
switch (BuiltinID) {
default: return false;
case SystemZ::BI__builtin_s390_lcbb: i = 1; l = 0; u = 15; break;
case SystemZ::BI__builtin_s390_verimb:
case SystemZ::BI__builtin_s390_verimh:
case SystemZ::BI__builtin_s390_verimf:
case SystemZ::BI__builtin_s390_verimg: i = 3; l = 0; u = 255; break;
case SystemZ::BI__builtin_s390_vfaeb:
case SystemZ::BI__builtin_s390_vfaeh:
case SystemZ::BI__builtin_s390_vfaef:
case SystemZ::BI__builtin_s390_vfaebs:
case SystemZ::BI__builtin_s390_vfaehs:
case SystemZ::BI__builtin_s390_vfaefs:
case SystemZ::BI__builtin_s390_vfaezb:
case SystemZ::BI__builtin_s390_vfaezh:
case SystemZ::BI__builtin_s390_vfaezf:
case SystemZ::BI__builtin_s390_vfaezbs:
case SystemZ::BI__builtin_s390_vfaezhs:
case SystemZ::BI__builtin_s390_vfaezfs: i = 2; l = 0; u = 15; break;
case SystemZ::BI__builtin_s390_vfisb:
case SystemZ::BI__builtin_s390_vfidb:
  return SemaBuiltinConstantArgRange(TheCall, 1, 0, 15) ||
         SemaBuiltinConstantArgRange(TheCall, 2, 0, 15);
case SystemZ::BI__builtin_s390_vftcisb:
case SystemZ::BI__builtin_s390_vftcidb: i = 1; l = 0; u = 4095; break;
case SystemZ::BI__builtin_s390_vlbb: i = 1; l = 0; u = 15; break;
case SystemZ::BI__builtin_s390_vpdi: i = 2; l = 0; u = 15; break;
case SystemZ::BI__builtin_s390_vsldb: i = 2; l = 0; u = 15; break;
case SystemZ::BI__builtin_s390_vstrcb:
case SystemZ::BI__builtin_s390_vstrch:
case SystemZ::BI__builtin_s390_vstrcf:
case SystemZ::BI__builtin_s390_vstrczb:
case SystemZ::BI__builtin_s390_vstrczh:
case SystemZ::BI__builtin_s390_vstrczf:
case SystemZ::BI__builtin_s390_vstrcbs:
case SystemZ::BI__builtin_s390_vstrchs:
case SystemZ::BI__builtin_s390_vstrcfs:
case SystemZ::BI__builtin_s390_vstrczbs:
case SystemZ::BI__builtin_s390_vstrczhs:
case SystemZ::BI__builtin_s390_vstrczfs: i = 3; l = 0; u = 15; break;
case SystemZ::BI__builtin_s390_vmslg: i = 3; l = 0; u = 15; break;
case SystemZ::BI__builtin_s390_vfminsb:
case SystemZ::BI__builtin_s390_vfmaxsb:
case SystemZ::BI__builtin_s390_vfmindb:
case SystemZ::BI__builtin_s390_vfmaxdb: i = 2; l = 0; u = 15; break;
}
return SemaBuiltinConstantArgRange(TheCall, i, l, u);
3287}

3289/// SemaBuiltinCpuSupports - Handle __builtin_cpu_supports(char *).
3290/// This checks that the target supports __builtin_cpu_supports and
3291/// that the string argument is constant and valid.
3292static bool SemaBuiltinCpuSupports(Sema &S, CallExpr *TheCall) {
Expr *Arg = TheCall->getArg(0);

// Check if the argument is a string literal.
if (!isa<StringLiteral>(Arg->IgnoreParenImpCasts()))
  return S.Diag(TheCall->getBeginLoc(), diag::err_expr_not_string_literal)
         << Arg->getSourceRange();

// Check the contents of the string.
StringRef Feature =
    cast<StringLiteral>(Arg->IgnoreParenImpCasts())->getString();
if (!S.Context.getTargetInfo().validateCpuSupports(Feature))
  return S.Diag(TheCall->getBeginLoc(), diag::err_invalid_cpu_supports)
         << Arg->getSourceRange();
return false;
3307}

3309/// SemaBuiltinCpuIs - Handle __builtin_cpu_is(char *).
3310/// This checks that the target supports __builtin_cpu_is and
3311/// that the string argument is constant and valid.
3312static bool SemaBuiltinCpuIs(Sema &S, CallExpr *TheCall) {
Expr *Arg = TheCall->getArg(0);

// Check if the argument is a string literal.
if (!isa<StringLiteral>(Arg->IgnoreParenImpCasts()))
  return S.Diag(TheCall->getBeginLoc(), diag::err_expr_not_string_literal)
         << Arg->getSourceRange();

// Check the contents of the string.
StringRef Feature =
    cast<StringLiteral>(Arg->IgnoreParenImpCasts())->getString();
if (!S.Context.getTargetInfo().validateCpuIs(Feature))
  return S.Diag(TheCall->getBeginLoc(), diag::err_invalid_cpu_is)
         << Arg->getSourceRange();
return false;
3327}

3329// Check if the rounding mode is legal.
3330bool Sema::CheckX86BuiltinRoundingOrSAE(unsigned BuiltinID, CallExpr *TheCall) {
// Indicates if this instruction has rounding control or just SAE.
bool HasRC = false;

unsigned ArgNum = 0;
switch (BuiltinID) {
default:
  return false;
case X86::BI__builtin_ia32_vcvttsd2si32:
case X86::BI__builtin_ia32_vcvttsd2si64:
case X86::BI__builtin_ia32_vcvttsd2usi32:
case X86::BI__builtin_ia32_vcvttsd2usi64:
case X86::BI__builtin_ia32_vcvttss2si32:
case X86::BI__builtin_ia32_vcvttss2si64:
case X86::BI__builtin_ia32_vcvttss2usi32:
case X86::BI__builtin_ia32_vcvttss2usi64:
  ArgNum = 1;
  break;
case X86::BI__builtin_ia32_maxpd512:
case X86::BI__builtin_ia32_maxps512:
case X86::BI__builtin_ia32_minpd512:
case X86::BI__builtin_ia32_minps512:
  ArgNum = 2;
  break;
case X86::BI__builtin_ia32_cvtps2pd512_mask:
case X86::BI__builtin_ia32_cvttpd2dq512_mask:
case X86::BI__builtin_ia32_cvttpd2qq512_mask:
case X86::BI__builtin_ia32_cvttpd2udq512_mask:
case X86::BI__builtin_ia32_cvttpd2uqq512_mask:
case X86::BI__builtin_ia32_cvttps2dq512_mask:
case X86::BI__builtin_ia32_cvttps2qq512_mask:
case X86::BI__builtin_ia32_cvttps2udq512_mask:
case X86::BI__builtin_ia32_cvttps2uqq512_mask:
case X86::BI__builtin_ia32_exp2pd_mask:
case X86::BI__builtin_ia32_exp2ps_mask:
case X86::BI__builtin_ia32_getexppd512_mask:
case X86::BI__builtin_ia32_getexpps512_mask:
case X86::BI__builtin_ia32_rcp28pd_mask:
case X86::BI__builtin_ia32_rcp28ps_mask:
case X86::BI__builtin_ia32_rsqrt28pd_mask:
case X86::BI__builtin_ia32_rsqrt28ps_mask:
case X86::BI__builtin_ia32_vcomisd:
case X86::BI__builtin_ia32_vcomiss:
case X86::BI__builtin_ia32_vcvtph2ps512_mask:
  ArgNum = 3;
  break;
case X86::BI__builtin_ia32_cmppd512_mask:
case X86::BI__builtin_ia32_cmpps512_mask:
case X86::BI__builtin_ia32_cmpsd_mask:
case X86::BI__builtin_ia32_cmpss_mask:
case X86::BI__builtin_ia32_cvtss2sd_round_mask:
case X86::BI__builtin_ia32_getexpsd128_round_mask:
case X86::BI__builtin_ia32_getexpss128_round_mask:
case X86::BI__builtin_ia32_getmantpd512_mask:
case X86::BI__builtin_ia32_getmantps512_mask:
case X86::BI__builtin_ia32_maxsd_round_mask:
case X86::BI__builtin_ia32_maxss_round_mask:
case X86::BI__builtin_ia32_minsd_round_mask:
case X86::BI__builtin_ia32_minss_round_mask:
case X86::BI__builtin_ia32_rcp28sd_round_mask:
case X86::BI__builtin_ia32_rcp28ss_round_mask:
case X86::BI__builtin_ia32_reducepd512_mask:
case X86::BI__builtin_ia32_reduceps512_mask:
case X86::BI__builtin_ia32_rndscalepd_mask:
case X86::BI__builtin_ia32_rndscaleps_mask:
case X86::BI__builtin_ia32_rsqrt28sd_round_mask:
case X86::BI__builtin_ia32_rsqrt28ss_round_mask:
  ArgNum = 4;
  break;
case X86::BI__builtin_ia32_fixupimmpd512_mask:
case X86::BI__builtin_ia32_fixupimmpd512_maskz:
case X86::BI__builtin_ia32_fixupimmps512_mask:
case X86::BI__builtin_ia32_fixupimmps512_maskz:
case X86::BI__builtin_ia32_fixupimmsd_mask:
case X86::BI__builtin_ia32_fixupimmsd_maskz:
case X86::BI__builtin_ia32_fixupimmss_mask:
case X86::BI__builtin_ia32_fixupimmss_maskz:
case X86::BI__builtin_ia32_getmantsd_round_mask:
case X86::BI__builtin_ia32_getmantss_round_mask:
case X86::BI__builtin_ia32_rangepd512_mask:
case X86::BI__builtin_ia32_rangeps512_mask:
case X86::BI__builtin_ia32_rangesd128_round_mask:
case X86::BI__builtin_ia32_rangess128_round_mask:
case X86::BI__builtin_ia32_reducesd_mask:
case X86::BI__builtin_ia32_reducess_mask:
case X86::BI__builtin_ia32_rndscalesd_round_mask:
case X86::BI__builtin_ia32_rndscaless_round_mask:
  ArgNum = 5;
  break;
case X86::BI__builtin_ia32_vcvtsd2si64:
case X86::BI__builtin_ia32_vcvtsd2si32:
case X86::BI__builtin_ia32_vcvtsd2usi32:
case X86::BI__builtin_ia32_vcvtsd2usi64:
case X86::BI__builtin_ia32_vcvtss2si32:
case X86::BI__builtin_ia32_vcvtss2si64:
case X86::BI__builtin_ia32_vcvtss2usi32:
case X86::BI__builtin_ia32_vcvtss2usi64:
case X86::BI__builtin_ia32_sqrtpd512:
case X86::BI__builtin_ia32_sqrtps512:
  ArgNum = 1;
  HasRC = true;
  break;
case X86::BI__builtin_ia32_addpd512:
case X86::BI__builtin_ia32_addps512:
case X86::BI__builtin_ia32_divpd512:
case X86::BI__builtin_ia32_divps512:
case X86::BI__builtin_ia32_mulpd512:
case X86::BI__builtin_ia32_mulps512:
case X86::BI__builtin_ia32_subpd512:
case X86::BI__builtin_ia32_subps512:
case X86::BI__builtin_ia32_cvtsi2sd64:
case X86::BI__builtin_ia32_cvtsi2ss32:
case X86::BI__builtin_ia32_cvtsi2ss64:
case X86::BI__builtin_ia32_cvtusi2sd64:
case X86::BI__builtin_ia32_cvtusi2ss32:
case X86::BI__builtin_ia32_cvtusi2ss64:
  ArgNum = 2;
  HasRC = true;
  break;
case X86::BI__builtin_ia32_cvtdq2ps512_mask:
case X86::BI__builtin_ia32_cvtudq2ps512_mask:
case X86::BI__builtin_ia32_cvtpd2ps512_mask:
case X86::BI__builtin_ia32_cvtpd2dq512_mask:
case X86::BI__builtin_ia32_cvtpd2qq512_mask:
case X86::BI__builtin_ia32_cvtpd2udq512_mask:
case X86::BI__builtin_ia32_cvtpd2uqq512_mask:
case X86::BI__builtin_ia32_cvtps2dq512_mask:
case X86::BI__builtin_ia32_cvtps2qq512_mask:
case X86::BI__builtin_ia32_cvtps2udq512_mask:
case X86::BI__builtin_ia32_cvtps2uqq512_mask:
case X86::BI__builtin_ia32_cvtqq2pd512_mask:
case X86::BI__builtin_ia32_cvtqq2ps512_mask:
case X86::BI__builtin_ia32_cvtuqq2pd512_mask:
case X86::BI__builtin_ia32_cvtuqq2ps512_mask:
  ArgNum = 3;
  HasRC = true;
  break;
case X86::BI__builtin_ia32_addss_round_mask:
case X86::BI__builtin_ia32_addsd_round_mask:
case X86::BI__builtin_ia32_divss_round_mask:
case X86::BI__builtin_ia32_divsd_round_mask:
case X86::BI__builtin_ia32_mulss_round_mask:
case X86::BI__builtin_ia32_mulsd_round_mask:
case X86::BI__builtin_ia32_subss_round_mask:
case X86::BI__builtin_ia32_subsd_round_mask:
case X86::BI__builtin_ia32_scalefpd512_mask:
case X86::BI__builtin_ia32_scalefps512_mask:
case X86::BI__builtin_ia32_scalefsd_round_mask:
case X86::BI__builtin_ia32_scalefss_round_mask:
case X86::BI__builtin_ia32_cvtsd2ss_round_mask:
case X86::BI__builtin_ia32_sqrtsd_round_mask:
case X86::BI__builtin_ia32_sqrtss_round_mask:
case X86::BI__builtin_ia32_vfmaddsd3_mask:
case X86::BI__builtin_ia32_vfmaddsd3_maskz:
case X86::BI__builtin_ia32_vfmaddsd3_mask3:
case X86::BI__builtin_ia32_vfmaddss3_mask:
case X86::BI__builtin_ia32_vfmaddss3_maskz:
case X86::BI__builtin_ia32_vfmaddss3_mask3:
case X86::BI__builtin_ia32_vfmaddpd512_mask:
case X86::BI__builtin_ia32_vfmaddpd512_maskz:
case X86::BI__builtin_ia32_vfmaddpd512_mask3:
case X86::BI__builtin_ia32_vfmsubpd512_mask3:
case X86::BI__builtin_ia32_vfmaddps512_mask:
case X86::BI__builtin_ia32_vfmaddps512_maskz:
case X86::BI__builtin_ia32_vfmaddps512_mask3:
case X86::BI__builtin_ia32_vfmsubps512_mask3:
case X86::BI__builtin_ia32_vfmaddsubpd512_mask:
case X86::BI__builtin_ia32_vfmaddsubpd512_maskz:
case X86::BI__builtin_ia32_vfmaddsubpd512_mask3:
case X86::BI__builtin_ia32_vfmsubaddpd512_mask3:
case X86::BI__builtin_ia32_vfmaddsubps512_mask:
case X86::BI__builtin_ia32_vfmaddsubps512_maskz:
case X86::BI__builtin_ia32_vfmaddsubps512_mask3:
case X86::BI__builtin_ia32_vfmsubaddps512_mask3:
  ArgNum = 4;
  HasRC = true;
  break;
}

llvm::APSInt Result;

// We can't check the value of a dependent argument.
Expr *Arg = TheCall->getArg(ArgNum);
if (Arg->isTypeDependent() || Arg->isValueDependent())
  return false;

// Check constant-ness first.
if (SemaBuiltinConstantArg(TheCall, ArgNum, Result))
  return true;

// Make sure rounding mode is either ROUND_CUR_DIRECTION or ROUND_NO_EXC bit
// is set. If the intrinsic has rounding control(bits 1:0), make sure its only
// combined with ROUND_NO_EXC.
if (Result == 4/*ROUND_CUR_DIRECTION*/ ||
    Result == 8/*ROUND_NO_EXC*/ ||
    (HasRC && Result.getZExtValue() >= 8 && Result.getZExtValue() <= 11))
  return false;

return Diag(TheCall->getBeginLoc(), diag::err_x86_builtin_invalid_rounding)
       << Arg->getSourceRange();
3530}

3532// Check if the gather/scatter scale is legal.
3533bool Sema::CheckX86BuiltinGatherScatterScale(unsigned BuiltinID,
                                           CallExpr *TheCall) {
unsigned ArgNum = 0;
switch (BuiltinID) {
default:
  return false;
case X86::BI__builtin_ia32_gatherpfdpd:
case X86::BI__builtin_ia32_gatherpfdps:
case X86::BI__builtin_ia32_gatherpfqpd:
case X86::BI__builtin_ia32_gatherpfqps:
case X86::BI__builtin_ia32_scatterpfdpd:
case X86::BI__builtin_ia32_scatterpfdps:
case X86::BI__builtin_ia32_scatterpfqpd:
case X86::BI__builtin_ia32_scatterpfqps:
  ArgNum = 3;
  break;
case X86::BI__builtin_ia32_gatherd_pd:
case X86::BI__builtin_ia32_gatherd_pd256:
case X86::BI__builtin_ia32_gatherq_pd:
case X86::BI__builtin_ia32_gatherq_pd256:
case X86::BI__builtin_ia32_gatherd_ps:
case X86::BI__builtin_ia32_gatherd_ps256:
case X86::BI__builtin_ia32_gatherq_ps:
case X86::BI__builtin_ia32_gatherq_ps256:
case X86::BI__builtin_ia32_gatherd_q:
case X86::BI__builtin_ia32_gatherd_q256:
case X86::BI__builtin_ia32_gatherq_q:
case X86::BI__builtin_ia32_gatherq_q256:
case X86::BI__builtin_ia32_gatherd_d:
case X86::BI__builtin_ia32_gatherd_d256:
case X86::BI__builtin_ia32_gatherq_d:
case X86::BI__builtin_ia32_gatherq_d256:
case X86::BI__builtin_ia32_gather3div2df:
case X86::BI__builtin_ia32_gather3div2di:
case X86::BI__builtin_ia32_gather3div4df:
case X86::BI__builtin_ia32_gather3div4di:
case X86::BI__builtin_ia32_gather3div4sf:
case X86::BI__builtin_ia32_gather3div4si:
case X86::BI__builtin_ia32_gather3div8sf:
case X86::BI__builtin_ia32_gather3div8si:
case X86::BI__builtin_ia32_gather3siv2df:
case X86::BI__builtin_ia32_gather3siv2di:
case X86::BI__builtin_ia32_gather3siv4df:
case X86::BI__builtin_ia32_gather3siv4di:
case X86::BI__builtin_ia32_gather3siv4sf:
case X86::BI__builtin_ia32_gather3siv4si:
case X86::BI__builtin_ia32_gather3siv8sf:
case X86::BI__builtin_ia32_gather3siv8si:
case X86::BI__builtin_ia32_gathersiv8df:
case X86::BI__builtin_ia32_gathersiv16sf:
case X86::BI__builtin_ia32_gatherdiv8df:
case X86::BI__builtin_ia32_gatherdiv16sf:
case X86::BI__builtin_ia32_gathersiv8di:
case X86::BI__builtin_ia32_gathersiv16si:
case X86::BI__builtin_ia32_gatherdiv8di:
case X86::BI__builtin_ia32_gatherdiv16si:
case X86::BI__builtin_ia32_scatterdiv2df:
case X86::BI__builtin_ia32_scatterdiv2di:
case X86::BI__builtin_ia32_scatterdiv4df:
case X86::BI__builtin_ia32_scatterdiv4di:
case X86::BI__builtin_ia32_scatterdiv4sf:
case X86::BI__builtin_ia32_scatterdiv4si:
case X86::BI__builtin_ia32_scatterdiv8sf:
case X86::BI__builtin_ia32_scatterdiv8si:
case X86::BI__builtin_ia32_scattersiv2df:
case X86::BI__builtin_ia32_scattersiv2di:
case X86::BI__builtin_ia32_scattersiv4df:
case X86::BI__builtin_ia32_scattersiv4di:
case X86::BI__builtin_ia32_scattersiv4sf:
case X86::BI__builtin_ia32_scattersiv4si:
case X86::BI__builtin_ia32_scattersiv8sf:
case X86::BI__builtin_ia32_scattersiv8si:
case X86::BI__builtin_ia32_scattersiv8df:
case X86::BI__builtin_ia32_scattersiv16sf:
case X86::BI__builtin_ia32_scatterdiv8df:
case X86::BI__builtin_ia32_scatterdiv16sf:
case X86::BI__builtin_ia32_scattersiv8di:
case X86::BI__builtin_ia32_scattersiv16si:
case X86::BI__builtin_ia32_scatterdiv8di:
case X86::BI__builtin_ia32_scatterdiv16si:
  ArgNum = 4;
  break;
}

llvm::APSInt Result;

// We can't check the value of a dependent argument.
Expr *Arg = TheCall->getArg(ArgNum);
if (Arg->isTypeDependent() || Arg->isValueDependent())
  return false;

// Check constant-ness first.
if (SemaBuiltinConstantArg(TheCall, ArgNum, Result))
  return true;

if (Result == 1 || Result == 2 || Result == 4 || Result == 8)
  return false;

return Diag(TheCall->getBeginLoc(), diag::err_x86_builtin_invalid_scale)
       << Arg->getSourceRange();
3633}

3635static bool isX86_32Builtin(unsigned BuiltinID) {
// These builtins only work on x86-32 targets.
switch (BuiltinID) {
case X86::BI__builtin_ia32_readeflags_u32:
case X86::BI__builtin_ia32_writeeflags_u32:
  return true;
}

return false;
3644}

3646bool Sema::CheckX86BuiltinFunctionCall(unsigned BuiltinID, CallExpr *TheCall) {
if (BuiltinID == X86::BI__builtin_cpu_supports)
  return SemaBuiltinCpuSupports(*this, TheCall);

if (BuiltinID == X86::BI__builtin_cpu_is)
  return SemaBuiltinCpuIs(*this, TheCall);

// Check for 32-bit only builtins on a 64-bit target.
const llvm::Triple &TT = Context.getTargetInfo().getTriple();
if (TT.getArch() != llvm::Triple::x86 && isX86_32Builtin(BuiltinID))
  return Diag(TheCall->getCallee()->getBeginLoc(),
              diag::err_32_bit_builtin_64_bit_tgt);

// If the intrinsic has rounding or SAE make sure its valid.
if (CheckX86BuiltinRoundingOrSAE(BuiltinID, TheCall))
  return true;

// If the intrinsic has a gather/scatter scale immediate make sure its valid.
if (CheckX86BuiltinGatherScatterScale(BuiltinID, TheCall))
  return true;

// For intrinsics which take an immediate value as part of the instruction,
// range check them here.
int i = 0, l = 0, u = 0;
switch (BuiltinID) {
default:
  return false;
case X86::BI__builtin_ia32_vec_ext_v2si:
case X86::BI__builtin_ia32_vec_ext_v2di:
case X86::BI__builtin_ia32_vextractf128_pd256:
case X86::BI__builtin_ia32_vextractf128_ps256:
case X86::BI__builtin_ia32_vextractf128_si256:
case X86::BI__builtin_ia32_extract128i256:
case X86::BI__builtin_ia32_extractf64x4_mask:
case X86::BI__builtin_ia32_extracti64x4_mask:
case X86::BI__builtin_ia32_extractf32x8_mask:
case X86::BI__builtin_ia32_extracti32x8_mask:
case X86::BI__builtin_ia32_extractf64x2_256_mask:
case X86::BI__builtin_ia32_extracti64x2_256_mask:
case X86::BI__builtin_ia32_extractf32x4_256_mask:
case X86::BI__builtin_ia32_extracti32x4_256_mask:
  i = 1; l = 0; u = 1;
  break;
case X86::BI__builtin_ia32_vec_set_v2di:
case X86::BI__builtin_ia32_vinsertf128_pd256:
case X86::BI__builtin_ia32_vinsertf128_ps256:
case X86::BI__builtin_ia32_vinsertf128_si256:
case X86::BI__builtin_ia32_insert128i256:
case X86::BI__builtin_ia32_insertf32x8:
case X86::BI__builtin_ia32_inserti32x8:
case X86::BI__builtin_ia32_insertf64x4:
case X86::BI__builtin_ia32_inserti64x4:
case X86::BI__builtin_ia32_insertf64x2_256:
case X86::BI__builtin_ia32_inserti64x2_256:
case X86::BI__builtin_ia32_insertf32x4_256:
case X86::BI__builtin_ia32_inserti32x4_256:
  i = 2; l = 0; u = 1;
  break;
case X86::BI__builtin_ia32_vpermilpd:
case X86::BI__builtin_ia32_vec_ext_v4hi:
case X86::BI__builtin_ia32_vec_ext_v4si:
case X86::BI__builtin_ia32_vec_ext_v4sf:
case X86::BI__builtin_ia32_vec_ext_v4di:
case X86::BI__builtin_ia32_extractf32x4_mask:
case X86::BI__builtin_ia32_extracti32x4_mask:
case X86::BI__builtin_ia32_extractf64x2_512_mask:
case X86::BI__builtin_ia32_extracti64x2_512_mask:
  i = 1; l = 0; u = 3;
  break;
case X86::BI_mm_prefetch:
case X86::BI__builtin_ia32_vec_ext_v8hi:
case X86::BI__builtin_ia32_vec_ext_v8si:
  i = 1; l = 0; u = 7;
  break;
case X86::BI__builtin_ia32_sha1rnds4:
case X86::BI__builtin_ia32_blendpd:
case X86::BI__builtin_ia32_shufpd:
case X86::BI__builtin_ia32_vec_set_v4hi:
case X86::BI__builtin_ia32_vec_set_v4si:
case X86::BI__builtin_ia32_vec_set_v4di:
case X86::BI__builtin_ia32_shuf_f32x4_256:
case X86::BI__builtin_ia32_shuf_f64x2_256:
case X86::BI__builtin_ia32_shuf_i32x4_256:
case X86::BI__builtin_ia32_shuf_i64x2_256:
case X86::BI__builtin_ia32_insertf64x2_512:
case X86::BI__builtin_ia32_inserti64x2_512:
case X86::BI__builtin_ia32_insertf32x4:
case X86::BI__builtin_ia32_inserti32x4:
  i = 2; l = 0; u = 3;
  break;
case X86::BI__builtin_ia32_vpermil2pd:
case X86::BI__builtin_ia32_vpermil2pd256:
case X86::BI__builtin_ia32_vpermil2ps:
case X86::BI__builtin_ia32_vpermil2ps256:
  i = 3; l = 0; u = 3;
  break;
case X86::BI__builtin_ia32_cmpb128_mask:
case X86::BI__builtin_ia32_cmpw128_mask:
case X86::BI__builtin_ia32_cmpd128_mask:
case X86::BI__builtin_ia32_cmpq128_mask:
case X86::BI__builtin_ia32_cmpb256_mask:
case X86::BI__builtin_ia32_cmpw256_mask:
case X86::BI__builtin_ia32_cmpd256_mask:
case X86::BI__builtin_ia32_cmpq256_mask:
case X86::BI__builtin_ia32_cmpb512_mask:
case X86::BI__builtin_ia32_cmpw512_mask:
case X86::BI__builtin_ia32_cmpd512_mask:
case X86::BI__builtin_ia32_cmpq512_mask:
case X86::BI__builtin_ia32_ucmpb128_mask:
case X86::BI__builtin_ia32_ucmpw128_mask:
case X86::BI__builtin_ia32_ucmpd128_mask:
case X86::BI__builtin_ia32_ucmpq128_mask:
case X86::BI__builtin_ia32_ucmpb256_mask:
case X86::BI__builtin_ia32_ucmpw256_mask:
case X86::BI__builtin_ia32_ucmpd256_mask:
case X86::BI__builtin_ia32_ucmpq256_mask:
case X86::BI__builtin_ia32_ucmpb512_mask:
case X86::BI__builtin_ia32_ucmpw512_mask:
case X86::BI__builtin_ia32_ucmpd512_mask:
case X86::BI__builtin_ia32_ucmpq512_mask:
case X86::BI__builtin_ia32_vpcomub:
case X86::BI__builtin_ia32_vpcomuw:
case X86::BI__builtin_ia32_vpcomud:
case X86::BI__builtin_ia32_vpcomuq:
case X86::BI__builtin_ia32_vpcomb:
case X86::BI__builtin_ia32_vpcomw:
case X86::BI__builtin_ia32_vpcomd:
case X86::BI__builtin_ia32_vpcomq:
case X86::BI__builtin_ia32_vec_set_v8hi:
case X86::BI__builtin_ia32_vec_set_v8si:
  i = 2; l = 0; u = 7;
  break;
case X86::BI__builtin_ia32_vpermilpd256:
case X86::BI__builtin_ia32_roundps:
case X86::BI__builtin_ia32_roundpd:
case X86::BI__builtin_ia32_roundps256:
case X86::BI__builtin_ia32_roundpd256:
case X86::BI__builtin_ia32_getmantpd128_mask:
case X86::BI__builtin_ia32_getmantpd256_mask:
case X86::BI__builtin_ia32_getmantps128_mask:
case X86::BI__builtin_ia32_getmantps256_mask:
case X86::BI__builtin_ia32_getmantpd512_mask:
case X86::BI__builtin_ia32_getmantps512_mask:
case X86::BI__builtin_ia32_vec_ext_v16qi:
case X86::BI__builtin_ia32_vec_ext_v16hi:
  i = 1; l = 0; u = 15;
  break;
case X86::BI__builtin_ia32_pblendd128:
case X86::BI__builtin_ia32_blendps:
case X86::BI__builtin_ia32_blendpd256:
case X86::BI__builtin_ia32_shufpd256:
case X86::BI__builtin_ia32_roundss:
case X86::BI__builtin_ia32_roundsd:
case X86::BI__builtin_ia32_rangepd128_mask:
case X86::BI__builtin_ia32_rangepd256_mask:
case X86::BI__builtin_ia32_rangepd512_mask:
case X86::BI__builtin_ia32_rangeps128_mask:
case X86::BI__builtin_ia32_rangeps256_mask:
case X86::BI__builtin_ia32_rangeps512_mask:
case X86::BI__builtin_ia32_getmantsd_round_mask:
case X86::BI__builtin_ia32_getmantss_round_mask:
case X86::BI__builtin_ia32_vec_set_v16qi:
case X86::BI__builtin_ia32_vec_set_v16hi:
  i = 2; l = 0; u = 15;
  break;
case X86::BI__builtin_ia32_vec_ext_v32qi:
  i = 1; l = 0; u = 31;
  break;
case X86::BI__builtin_ia32_cmpps:
case X86::BI__builtin_ia32_cmpss:
case X86::BI__builtin_ia32_cmppd:
case X86::BI__builtin_ia32_cmpsd:
case X86::BI__builtin_ia32_cmpps256:
case X86::BI__builtin_ia32_cmppd256:
case X86::BI__builtin_ia32_cmpps128_mask:
case X86::BI__builtin_ia32_cmppd128_mask:
case X86::BI__builtin_ia32_cmpps256_mask:
case X86::BI__builtin_ia32_cmppd256_mask:
case X86::BI__builtin_ia32_cmpps512_mask:
case X86::BI__builtin_ia32_cmppd512_mask:
case X86::BI__builtin_ia32_cmpsd_mask:
case X86::BI__builtin_ia32_cmpss_mask:
case X86::BI__builtin_ia32_vec_set_v32qi:
  i = 2; l = 0; u = 31;
  break;
case X86::BI__builtin_ia32_permdf256:
case X86::BI__builtin_ia32_permdi256:
case X86::BI__builtin_ia32_permdf512:
case X86::BI__builtin_ia32_permdi512:
case X86::BI__builtin_ia32_vpermilps:
case X86::BI__builtin_ia32_vpermilps256:
case X86::BI__builtin_ia32_vpermilpd512:
case X86::BI__builtin_ia32_vpermilps512:
case X86::BI__builtin_ia32_pshufd:
case X86::BI__builtin_ia32_pshufd256:
case X86::BI__builtin_ia32_pshufd512:
case X86::BI__builtin_ia32_pshufhw:
case X86::BI__builtin_ia32_pshufhw256:
case X86::BI__builtin_ia32_pshufhw512:
case X86::BI__builtin_ia32_pshuflw:
case X86::BI__builtin_ia32_pshuflw256:
case X86::BI__builtin_ia32_pshuflw512:
case X86::BI__builtin_ia32_vcvtps2ph:
case X86::BI__builtin_ia32_vcvtps2ph_mask:
case X86::BI__builtin_ia32_vcvtps2ph256:
case X86::BI__builtin_ia32_vcvtps2ph256_mask:
case X86::BI__builtin_ia32_vcvtps2ph512_mask:
case X86::BI__builtin_ia32_rndscaleps_128_mask:
case X86::BI__builtin_ia32_rndscalepd_128_mask:
case X86::BI__builtin_ia32_rndscaleps_256_mask:
case X86::BI__builtin_ia32_rndscalepd_256_mask:
case X86::BI__builtin_ia32_rndscaleps_mask:
case X86::BI__builtin_ia32_rndscalepd_mask:
case X86::BI__builtin_ia32_reducepd128_mask:
case X86::BI__builtin_ia32_reducepd256_mask:
case X86::BI__builtin_ia32_reducepd512_mask:
case X86::BI__builtin_ia32_reduceps128_mask:
case X86::BI__builtin_ia32_reduceps256_mask:
case X86::BI__builtin_ia32_reduceps512_mask:
case X86::BI__builtin_ia32_prold512:
case X86::BI__builtin_ia32_prolq512:
case X86::BI__builtin_ia32_prold128:
case X86::BI__builtin_ia32_prold256:
case X86::BI__builtin_ia32_prolq128:
case X86::BI__builtin_ia32_prolq256:
case X86::BI__builtin_ia32_prord512:
case X86::BI__builtin_ia32_prorq512:
case X86::BI__builtin_ia32_prord128:
case X86::BI__builtin_ia32_prord256:
case X86::BI__builtin_ia32_prorq128:
case X86::BI__builtin_ia32_prorq256:
case X86::BI__builtin_ia32_fpclasspd128_mask:
case X86::BI__builtin_ia32_fpclasspd256_mask:
case X86::BI__builtin_ia32_fpclassps128_mask:
case X86::BI__builtin_ia32_fpclassps256_mask:
case X86::BI__builtin_ia32_fpclassps512_mask:
case X86::BI__builtin_ia32_fpclasspd512_mask:
case X86::BI__builtin_ia32_fpclasssd_mask:
case X86::BI__builtin_ia32_fpclassss_mask:
case X86::BI__builtin_ia32_pslldqi128_byteshift:
case X86::BI__builtin_ia32_pslldqi256_byteshift:
case X86::BI__builtin_ia32_pslldqi512_byteshift:
case X86::BI__builtin_ia32_psrldqi128_byteshift:
case X86::BI__builtin_ia32_psrldqi256_byteshift:
case X86::BI__builtin_ia32_psrldqi512_byteshift:
case X86::BI__builtin_ia32_kshiftliqi:
case X86::BI__builtin_ia32_kshiftlihi:
case X86::BI__builtin_ia32_kshiftlisi:
case X86::BI__builtin_ia32_kshiftlidi:
case X86::BI__builtin_ia32_kshiftriqi:
case X86::BI__builtin_ia32_kshiftrihi:
case X86::BI__builtin_ia32_kshiftrisi:
case X86::BI__builtin_ia32_kshiftridi:
  i = 1; l = 0; u = 255;
  break;
case X86::BI__builtin_ia32_vperm2f128_pd256:
case X86::BI__builtin_ia32_vperm2f128_ps256:
case X86::BI__builtin_ia32_vperm2f128_si256:
case X86::BI__builtin_ia32_permti256:
case X86::BI__builtin_ia32_pblendw128:
case X86::BI__builtin_ia32_pblendw256:
case X86::BI__builtin_ia32_blendps256:
case X86::BI__builtin_ia32_pblendd256:
case X86::BI__builtin_ia32_palignr128:
case X86::BI__builtin_ia32_palignr256:
case X86::BI__builtin_ia32_palignr512:
case X86::BI__builtin_ia32_alignq512:
case X86::BI__builtin_ia32_alignd512:
case X86::BI__builtin_ia32_alignd128:
case X86::BI__builtin_ia32_alignd256:
case X86::BI__builtin_ia32_alignq128:
case X86::BI__builtin_ia32_alignq256:
case X86::BI__builtin_ia32_vcomisd:
case X86::BI__builtin_ia32_vcomiss:
case X86::BI__builtin_ia32_shuf_f32x4:
case X86::BI__builtin_ia32_shuf_f64x2:
case X86::BI__builtin_ia32_shuf_i32x4:
case X86::BI__builtin_ia32_shuf_i64x2:
case X86::BI__builtin_ia32_shufpd512:
case X86::BI__builtin_ia32_shufps:
case X86::BI__builtin_ia32_shufps256:
case X86::BI__builtin_ia32_shufps512:
case X86::BI__builtin_ia32_dbpsadbw128:
case X86::BI__builtin_ia32_dbpsadbw256:
case X86::BI__builtin_ia32_dbpsadbw512:
case X86::BI__builtin_ia32_vpshldd128:
case X86::BI__builtin_ia32_vpshldd256:
case X86::BI__builtin_ia32_vpshldd512:
case X86::BI__builtin_ia32_vpshldq128:
case X86::BI__builtin_ia32_vpshldq256:
case X86::BI__builtin_ia32_vpshldq512:
case X86::BI__builtin_ia32_vpshldw128:
case X86::BI__builtin_ia32_vpshldw256:
case X86::BI__builtin_ia32_vpshldw512:
case X86::BI__builtin_ia32_vpshrdd128:
case X86::BI__builtin_ia32_vpshrdd256:
case X86::BI__builtin_ia32_vpshrdd512:
case X86::BI__builtin_ia32_vpshrdq128:
case X86::BI__builtin_ia32_vpshrdq256:
case X86::BI__builtin_ia32_vpshrdq512:
case X86::BI__builtin_ia32_vpshrdw128:
case X86::BI__builtin_ia32_vpshrdw256:
case X86::BI__builtin_ia32_vpshrdw512:
  i = 2; l = 0; u = 255;
  break;
case X86::BI__builtin_ia32_fixupimmpd512_mask:
case X86::BI__builtin_ia32_fixupimmpd512_maskz:
case X86::BI__builtin_ia32_fixupimmps512_mask:
case X86::BI__builtin_ia32_fixupimmps512_maskz:
case X86::BI__builtin_ia32_fixupimmsd_mask:
case X86::BI__builtin_ia32_fixupimmsd_maskz:
case X86::BI__builtin_ia32_fixupimmss_mask:
case X86::BI__builtin_ia32_fixupimmss_maskz:
case X86::BI__builtin_ia32_fixupimmpd128_mask:
case X86::BI__builtin_ia32_fixupimmpd128_maskz:
case X86::BI__builtin_ia32_fixupimmpd256_mask:
case X86::BI__builtin_ia32_fixupimmpd256_maskz:
case X86::BI__builtin_ia32_fixupimmps128_mask:
case X86::BI__builtin_ia32_fixupimmps128_maskz:
case X86::BI__builtin_ia32_fixupimmps256_mask:
case X86::BI__builtin_ia32_fixupimmps256_maskz:
case X86::BI__builtin_ia32_pternlogd512_mask:
case X86::BI__builtin_ia32_pternlogd512_maskz:
case X86::BI__builtin_ia32_pternlogq512_mask:
case X86::BI__builtin_ia32_pternlogq512_maskz:
case X86::BI__builtin_ia32_pternlogd128_mask:
case X86::BI__builtin_ia32_pternlogd128_maskz:
case X86::BI__builtin_ia32_pternlogd256_mask:
case X86::BI__builtin_ia32_pternlogd256_maskz:
case X86::BI__builtin_ia32_pternlogq128_mask:
case X86::BI__builtin_ia32_pternlogq128_maskz:
case X86::BI__builtin_ia32_pternlogq256_mask:
case X86::BI__builtin_ia32_pternlogq256_maskz:
  i = 3; l = 0; u = 255;
  break;
case X86::BI__builtin_ia32_gatherpfdpd:
case X86::BI__builtin_ia32_gatherpfdps:
case X86::BI__builtin_ia32_gatherpfqpd:
case X86::BI__builtin_ia32_gatherpfqps:
case X86::BI__builtin_ia32_scatterpfdpd:
case X86::BI__builtin_ia32_scatterpfdps:
case X86::BI__builtin_ia32_scatterpfqpd:
case X86::BI__builtin_ia32_scatterpfqps:
  i = 4; l = 2; u = 3;
  break;
case X86::BI__builtin_ia32_rndscalesd_round_mask:
case X86::BI__builtin_ia32_rndscaless_round_mask:
  i = 4; l = 0; u = 255;
  break;
}

// Note that we don't force a hard error on the range check here, allowing
// template-generated or macro-generated dead code to potentially have out-of-
// range values. These need to code generate, but don't need to necessarily
// make any sense. We use a warning that defaults to an error.
return SemaBuiltinConstantArgRange(TheCall, i, l, u, /*RangeIsError*/ false);
4002}

4004/// Given a FunctionDecl's FormatAttr, attempts to populate the FomatStringInfo
4005/// parameter with the FormatAttr's correct format_idx and firstDataArg.
4006/// Returns true when the format fits the function and the FormatStringInfo has
4007/// been populated.
4008bool Sema::getFormatStringInfo(const FormatAttr *Format, bool IsCXXMember,
                             FormatStringInfo *FSI) {
FSI->HasVAListArg = Format->getFirstArg() == 0;
FSI->FormatIdx = Format->getFormatIdx() - 1;
FSI->FirstDataArg = FSI->HasVAListArg ? 0 : Format->getFirstArg() - 1;

// The way the format attribute works in GCC, the implicit this argument
// of member functions is counted. However, it doesn't appear in our own
// lists, so decrement format_idx in that case.
if (IsCXXMember) {
  if(FSI->FormatIdx == 0)
    return false;
  --FSI->FormatIdx;
  if (FSI->FirstDataArg != 0)
    --FSI->FirstDataArg;
}
return true;
4025}

4027/// Checks if a the given expression evaluates to null.
4028///
4029/// Returns true if the value evaluates to null.
4030static bool CheckNonNullExpr(Sema &S, const Expr *Expr) {
// If the expression has non-null type, it doesn't evaluate to null.
if (auto nullability
      = Expr->IgnoreImplicit()->getType()->getNullability(S.Context)) {
  if (*nullability == NullabilityKind::NonNull)
    return false;
}

// As a special case, transparent unions initialized with zero are
// considered null for the purposes of the nonnull attribute.
if (const RecordType *UT = Expr->getType()->getAsUnionType()) {
  if (UT->getDecl()->hasAttr<TransparentUnionAttr>())
    if (const CompoundLiteralExpr *CLE =
        dyn_cast<CompoundLiteralExpr>(Expr))
      if (const InitListExpr *ILE =
          dyn_cast<InitListExpr>(CLE->getInitializer()))
        Expr = ILE->getInit(0);
}

bool Result;
return (!Expr->isValueDependent() &&
        Expr->EvaluateAsBooleanCondition(Result, S.Context) &&
        !Result);
4053}

4055static void CheckNonNullArgument(Sema &S,
                               const Expr *ArgExpr,
                               SourceLocation CallSiteLoc) {
if (CheckNonNullExpr(S, ArgExpr))
  S.DiagRuntimeBehavior(CallSiteLoc, ArgExpr,
         S.PDiag(diag::warn_null_arg) << ArgExpr->getSourceRange());
4061}

4063bool Sema::GetFormatNSStringIdx(const FormatAttr *Format, unsigned &Idx) {
FormatStringInfo FSI;
if ((GetFormatStringType(Format) == FST_NSString) &&
    getFormatStringInfo(Format, false, &FSI)) {
  Idx = FSI.FormatIdx;
  return true;
}
return false;
4071}

4073/// Diagnose use of %s directive in an NSString which is being passed
4074/// as formatting string to formatting method.
4075static void
4076DiagnoseCStringFormatDirectiveInCFAPI(Sema &S,
                                      const NamedDecl *FDecl,
                                      Expr **Args,
                                      unsigned NumArgs) {
unsigned Idx = 0;
bool Format = false;
ObjCStringFormatFamily SFFamily = FDecl->getObjCFStringFormattingFamily();
if (SFFamily == ObjCStringFormatFamily::SFF_CFString) {
  Idx = 2;
  Format = true;
}
else
  for (const auto *I : FDecl->specific_attrs<FormatAttr>()) {
    if (S.GetFormatNSStringIdx(I, Idx)) {
      Format = true;
      break;
    }
  }
if (!Format || NumArgs <= Idx)
  return;
const Expr *FormatExpr = Args[Idx];
if (const CStyleCastExpr *CSCE = dyn_cast<CStyleCastExpr>(FormatExpr))
  FormatExpr = CSCE->getSubExpr();
const StringLiteral *FormatString;
if (const ObjCStringLiteral *OSL =
    dyn_cast<ObjCStringLiteral>(FormatExpr->IgnoreParenImpCasts()))
  FormatString = OSL->getString();
else
  FormatString = dyn_cast<StringLiteral>(FormatExpr->IgnoreParenImpCasts());
if (!FormatString)
  return;
if (S.FormatStringHasSArg(FormatString)) {
  S.Diag(FormatExpr->getExprLoc(), diag::warn_objc_cdirective_format_string)
    << "%s" << 1 << 1;
  S.Diag(FDecl->getLocation(), diag::note_entity_declared_at)
    << FDecl->getDeclName();
}
4113}

4115/// Determine whether the given type has a non-null nullability annotation.
4116static bool isNonNullType(ASTContext &ctx, QualType type) {
if (auto nullability = type->getNullability(ctx))
  return *nullability == NullabilityKind::NonNull;

return false;
4121}

4123static void CheckNonNullArguments(Sema &S,
                                const NamedDecl *FDecl,
                                const FunctionProtoType *Proto,
                                ArrayRef<const Expr *> Args,
                                SourceLocation CallSiteLoc) {
assert((FDecl || Proto) && "Need a function declaration or prototype")(((FDecl || Proto) && "Need a function declaration or prototype"
) ? static_cast<void> (0) : __assert_fail ("(FDecl || Proto) && \"Need a function declaration or prototype\""
, "/build/llvm-toolchain-snapshot-9~svn362543/tools/clang/lib/Sema/SemaChecking.cpp"
, 4128, __PRETTY_FUNCTION__));
9
←
'?' condition is true→

// Check the attributes attached to the method/function itself.
llvm::SmallBitVector NonNullArgs;
if (FDecl) {
10
←
Taking false branch→
  // Handle the nonnull attribute on the function/method declaration itself.
  for (const auto *NonNull : FDecl->specific_attrs<NonNullAttr>()) {
    if (!NonNull->args_size()) {
      // Easy case: all pointer arguments are nonnull.
      for (const auto *Arg : Args)
        if (S.isValidPointerAttrType(Arg->getType()))
          CheckNonNullArgument(S, Arg, CallSiteLoc);
      return;
    }

    for (const ParamIdx &Idx : NonNull->args()) {
      unsigned IdxAST = Idx.getASTIndex();
      if (IdxAST >= Args.size())
        continue;
      if (NonNullArgs.empty())
        NonNullArgs.resize(Args.size());
      NonNullArgs.set(IdxAST);
    }
  }
}

if (FDecl && (isa<FunctionDecl>(FDecl) || isa<ObjCMethodDecl>(FDecl))) {
  // Handle the nonnull attribute on the parameters of the
  // function/method.
  ArrayRef<ParmVarDecl*> parms;
  if (const FunctionDecl *FD = dyn_cast<FunctionDecl>(FDecl))
    parms = FD->parameters();
  else
    parms = cast<ObjCMethodDecl>(FDecl)->parameters();

  unsigned ParamIndex = 0;
  for (ArrayRef<ParmVarDecl*>::iterator I = parms.begin(), E = parms.end();
       I != E; ++I, ++ParamIndex) {
    const ParmVarDecl *PVD = *I;
    if (PVD->hasAttr<NonNullAttr>() ||
        isNonNullType(S.Context, PVD->getType())) {
      if (NonNullArgs.empty())
        NonNullArgs.resize(Args.size());

      NonNullArgs.set(ParamIndex);
    }
  }
} else {
  // If we have a non-function, non-method declaration but no
  // function prototype, try to dig out the function prototype.
  if (!Proto) {
11
←
Taking false branch→
    if (const ValueDecl *VD = dyn_cast<ValueDecl>(FDecl)) {
      QualType type = VD->getType().getNonReferenceType();
      if (auto pointerType = type->getAs<PointerType>())
        type = pointerType->getPointeeType();
      else if (auto blockType = type->getAs<BlockPointerType>())
        type = blockType->getPointeeType();
      // FIXME: data member pointers?

      // Dig out the function prototype, if there is one.
      Proto = type->getAs<FunctionProtoType>();
    }
  }

  // Fill in non-null argument information from the nullability
  // information on the parameter types (if we have them).
  if (Proto) {
12
←
Taking true branch→
    unsigned Index = 0;
    for (auto paramType : Proto->getParamTypes()) {
13
←
Assuming '__begin3' is not equal to '__end3'→
      if (isNonNullType(S.Context, paramType)) {
14
←
Taking true branch→
        if (NonNullArgs.empty())
15
←
Taking true branch→
          NonNullArgs.resize(Args.size());
16
←
Calling 'SmallBitVector::resize'→
22
←
Returned allocated memory→

        NonNullArgs.set(Index);
23
←
Calling 'SmallBitVector::set'→
      }

      ++Index;
    }
  }
}

// Check for non-null arguments.
for (unsigned ArgIndex = 0, ArgIndexEnd = NonNullArgs.size();
     ArgIndex != ArgIndexEnd; ++ArgIndex) {
  if (NonNullArgs[ArgIndex])
    CheckNonNullArgument(S, Args[ArgIndex], CallSiteLoc);
}
4215}

4217/// Handles the checks for format strings, non-POD arguments to vararg
4218/// functions, NULL arguments passed to non-NULL parameters, and diagnose_if
4219/// attributes.
4220void Sema::checkCall(NamedDecl *FDecl, const FunctionProtoType *Proto,
                   const Expr *ThisArg, ArrayRef<const Expr *> Args,
                   bool IsMemberFunction, SourceLocation Loc,
                   SourceRange Range, VariadicCallType CallType) {
// FIXME: We should check as much as we can in the template definition.
if (CurContext->isDependentContext())
2
←
Assuming the condition is false→
3
←
Taking false branch→
  return;

// Printf and scanf checking.
llvm::SmallBitVector CheckedVarArgs;
if (FDecl) {
4
←
Taking false branch→
  for (const auto *I : FDecl->specific_attrs<FormatAttr>()) {
    // Only create vector if there are format attributes.
    CheckedVarArgs.resize(Args.size());

    CheckFormatArguments(I, Args, IsMemberFunction, CallType, Loc, Range,
                         CheckedVarArgs);
  }
}

// Refuse POD arguments that weren't caught by the format string
// checks above.
auto *FD = dyn_cast_or_null<FunctionDecl>(FDecl);
if (CallType != VariadicDoesNotApply &&
5
←
Assuming 'CallType' is equal to VariadicDoesNotApply→
    (!FD || FD->getBuiltinID() != Builtin::BI__noop)) {
  unsigned NumParams = Proto ? Proto->getNumParams()
                     : FDecl && isa<FunctionDecl>(FDecl)
                         ? cast<FunctionDecl>(FDecl)->getNumParams()
                     : FDecl && isa<ObjCMethodDecl>(FDecl)
                         ? cast<ObjCMethodDecl>(FDecl)->param_size()
                     : 0;

  for (unsigned ArgIdx = NumParams; ArgIdx < Args.size(); ++ArgIdx) {
    // Args[ArgIdx] can be null in malformed code.
    if (const Expr *Arg = Args[ArgIdx]) {
      if (CheckedVarArgs.empty() || !CheckedVarArgs[ArgIdx])
        checkVariadicArgument(Arg, CallType);
    }
  }
}

if (FDecl || Proto) {
6
←
Assuming 'Proto' is non-null→
7
←
Taking true branch→
  CheckNonNullArguments(*this, FDecl, Proto, Args, Loc);
8
←
Calling 'CheckNonNullArguments'→

  // Type safety checking.
  if (FDecl) {
    for (const auto *I : FDecl->specific_attrs<ArgumentWithTypeTagAttr>())
      CheckArgumentWithTypeTag(I, Args, Loc);
  }
}

if (FD)
  diagnoseArgDependentDiagnoseIfAttrs(FD, ThisArg, Args, Loc);
4273}

4275/// CheckConstructorCall - Check a constructor call for correctness and safety
4276/// properties not enforced by the C type system.
4277void Sema::CheckConstructorCall(FunctionDecl *FDecl,
                              ArrayRef<const Expr *> Args,
                              const FunctionProtoType *Proto,
                              SourceLocation Loc) {
VariadicCallType CallType =
  Proto->isVariadic() ? VariadicConstructor : VariadicDoesNotApply;
checkCall(FDecl, Proto, /*ThisArg=*/nullptr, Args, /*IsMemberFunction=*/true,
          Loc, SourceRange(), CallType);
4285}

4287/// CheckFunctionCall - Check a direct function call for various correctness
4288/// and safety properties not strictly enforced by the C type system.
4289bool Sema::CheckFunctionCall(FunctionDecl *FDecl, CallExpr *TheCall,
                           const FunctionProtoType *Proto) {
bool IsMemberOperatorCall = isa<CXXOperatorCallExpr>(TheCall) &&
                            isa<CXXMethodDecl>(FDecl);
bool IsMemberFunction = isa<CXXMemberCallExpr>(TheCall) ||
                        IsMemberOperatorCall;
VariadicCallType CallType = getVariadicCallType(FDecl, Proto,
                                                TheCall->getCallee());
Expr** Args = TheCall->getArgs();
unsigned NumArgs = TheCall->getNumArgs();

Expr *ImplicitThis = nullptr;
if (IsMemberOperatorCall) {
  // If this is a call to a member operator, hide the first argument
  // from checkCall.
  // FIXME: Our choice of AST representation here is less than ideal.
  ImplicitThis = Args[0];
  ++Args;
  --NumArgs;
} else if (IsMemberFunction)
  ImplicitThis =
      cast<CXXMemberCallExpr>(TheCall)->getImplicitObjectArgument();

checkCall(FDecl, Proto, ImplicitThis, llvm::makeArrayRef(Args, NumArgs),
          IsMemberFunction, TheCall->getRParenLoc(),
          TheCall->getCallee()->getSourceRange(), CallType);

IdentifierInfo *FnInfo = FDecl->getIdentifier();
// None of the checks below are needed for functions that don't have
// simple names (e.g., C++ conversion functions).
if (!FnInfo)
  return false;

CheckAbsoluteValueFunction(TheCall, FDecl);
CheckMaxUnsignedZero(TheCall, FDecl);

if (getLangOpts().ObjC)
  DiagnoseCStringFormatDirectiveInCFAPI(*this, FDecl, Args, NumArgs);

unsigned CMId = FDecl->getMemoryFunctionKind();
if (CMId == 0)
  return false;

// Handle memory setting and copying functions.
4333//  if (CMId == Builtin::BIstrlcpy || CMId == Builtin::BIstrlcat)
4334//    CheckStrlcpycatArguments(TheCall, FnInfo);
4335//  else
if (CMId == Builtin::BIstrncat)
  CheckStrncatArguments(TheCall, FnInfo);
else
  CheckMemaccessArguments(TheCall, CMId, FnInfo);

return false;
4342}

4344bool Sema::CheckObjCMethodCall(ObjCMethodDecl *Method, SourceLocation lbrac,
                             ArrayRef<const Expr *> Args) {
VariadicCallType CallType =
    Method->isVariadic() ? VariadicMethod : VariadicDoesNotApply;

checkCall(Method, nullptr, /*ThisArg=*/nullptr, Args,
          /*IsMemberFunction=*/false, lbrac, Method->getSourceRange(),
          CallType);

return false;
4354}

4356bool Sema::CheckPointerCall(NamedDecl *NDecl, CallExpr *TheCall,
                          const FunctionProtoType *Proto) {
QualType Ty;
if (const auto *V = dyn_cast<VarDecl>(NDecl))
  Ty = V->getType().getNonReferenceType();
else if (const auto *F = dyn_cast<FieldDecl>(NDecl))
  Ty = F->getType().getNonReferenceType();
else
  return false;

if (!Ty->isBlockPointerType() && !Ty->isFunctionPointerType() &&
    !Ty->isFunctionProtoType())
  return false;

VariadicCallType CallType;
if (!Proto || !Proto->isVariadic()) {
  CallType = VariadicDoesNotApply;
} else if (Ty->isBlockPointerType()) {
  CallType = VariadicBlock;
} else { // Ty->isFunctionPointerType()
  CallType = VariadicFunction;
}

checkCall(NDecl, Proto, /*ThisArg=*/nullptr,
          llvm::makeArrayRef(TheCall->getArgs(), TheCall->getNumArgs()),
          /*IsMemberFunction=*/false, TheCall->getRParenLoc(),
          TheCall->getCallee()->getSourceRange(), CallType);

return false;
4385}

4387/// Checks function calls when a FunctionDecl or a NamedDecl is not available,
4388/// such as function pointers returned from functions.
4389bool Sema::CheckOtherCall(CallExpr *TheCall, const FunctionProtoType *Proto) {
VariadicCallType CallType = getVariadicCallType(/*FDecl=*/nullptr, Proto,
                                                TheCall->getCallee());
checkCall(/*FDecl=*/nullptr, Proto, /*ThisArg=*/nullptr,
1
Calling 'Sema::checkCall'→
          llvm::makeArrayRef(TheCall->getArgs(), TheCall->getNumArgs()),
          /*IsMemberFunction=*/false, TheCall->getRParenLoc(),
          TheCall->getCallee()->getSourceRange(), CallType);

return false;
4398}

4400static bool isValidOrderingForOp(int64_t Ordering, AtomicExpr::AtomicOp Op) {
if (!llvm::isValidAtomicOrderingCABI(Ordering))
  return false;

auto OrderingCABI = (llvm::AtomicOrderingCABI)Ordering;
switch (Op) {
case AtomicExpr::AO__c11_atomic_init:
case AtomicExpr::AO__opencl_atomic_init:
  llvm_unreachable("There is no ordering argument for an init")::llvm::llvm_unreachable_internal("There is no ordering argument for an init"
, "/build/llvm-toolchain-snapshot-9~svn362543/tools/clang/lib/Sema/SemaChecking.cpp"
, 4408);

case AtomicExpr::AO__c11_atomic_load:
case AtomicExpr::AO__opencl_atomic_load:
case AtomicExpr::AO__atomic_load_n:
case AtomicExpr::AO__atomic_load:
  return OrderingCABI != llvm::AtomicOrderingCABI::release &&
         OrderingCABI != llvm::AtomicOrderingCABI::acq_rel;

case AtomicExpr::AO__c11_atomic_store:
case AtomicExpr::AO__opencl_atomic_store:
case AtomicExpr::AO__atomic_store:
case AtomicExpr::AO__atomic_store_n:
  return OrderingCABI != llvm::AtomicOrderingCABI::consume &&
         OrderingCABI != llvm::AtomicOrderingCABI::acquire &&
         OrderingCABI != llvm::AtomicOrderingCABI::acq_rel;

default:
  return true;
}
4428}

4430ExprResult Sema::SemaAtomicOpsOverloaded(ExprResult TheCallResult,
                                       AtomicExpr::AtomicOp Op) {
CallExpr *TheCall = cast<CallExpr>(TheCallResult.get());
DeclRefExpr *DRE =cast<DeclRefExpr>(TheCall->getCallee()->IgnoreParenCasts());

// All the non-OpenCL operations take one of the following forms.
// The OpenCL operations take the __c11 forms with one extra argument for
// synchronization scope.
enum {
  // C    __c11_atomic_init(A *, C)
  Init,

  // C    __c11_atomic_load(A *, int)
  Load,

  // void __atomic_load(A *, CP, int)
  LoadCopy,

  // void __atomic_store(A *, CP, int)
  Copy,

  // C    __c11_atomic_add(A *, M, int)
  Arithmetic,

  // C    __atomic_exchange_n(A *, CP, int)
  Xchg,

  // void __atomic_exchange(A *, C *, CP, int)
  GNUXchg,

  // bool __c11_atomic_compare_exchange_strong(A *, C *, CP, int, int)
  C11CmpXchg,

  // bool __atomic_compare_exchange(A *, C *, CP, bool, int, int)
  GNUCmpXchg
} Form = Init;

const unsigned NumForm = GNUCmpXchg + 1;
const unsigned NumArgs[] = { 2, 2, 3, 3, 3, 3, 4, 5, 6 };
const unsigned NumVals[] = { 1, 0, 1, 1, 1, 1, 2, 2, 3 };
// where:
//   C is an appropriate type,
//   A is volatile _Atomic(C) for __c11 builtins and is C for GNU builtins,
//   CP is C for __c11 builtins and GNU _n builtins and is C * otherwise,
//   M is C if C is an integer, and ptrdiff_t if C is a pointer, and
//   the int parameters are for orderings.

static_assert(sizeof(NumArgs)/sizeof(NumArgs[0]) == NumForm
    && sizeof(NumVals)/sizeof(NumVals[0]) == NumForm,
    "need to update code for modified forms");
static_assert(AtomicExpr::AO__c11_atomic_init == 0 &&
                  AtomicExpr::AO__c11_atomic_fetch_xor + 1 ==
                      AtomicExpr::AO__atomic_load,
              "need to update code for modified C11 atomics");
bool IsOpenCL = Op >= AtomicExpr::AO__opencl_atomic_init &&
                Op <= AtomicExpr::AO__opencl_atomic_fetch_max;
bool IsC11 = (Op >= AtomicExpr::AO__c11_atomic_init &&
             Op <= AtomicExpr::AO__c11_atomic_fetch_xor) ||
             IsOpenCL;
bool IsN = Op == AtomicExpr::AO__atomic_load_n ||
           Op == AtomicExpr::AO__atomic_store_n ||
           Op == AtomicExpr::AO__atomic_exchange_n ||
           Op == AtomicExpr::AO__atomic_compare_exchange_n;
bool IsAddSub = false;
bool IsMinMax = false;

switch (Op) {
case AtomicExpr::AO__c11_atomic_init:
case AtomicExpr::AO__opencl_atomic_init:
  Form = Init;
  break;

case AtomicExpr::AO__c11_atomic_load:
case AtomicExpr::AO__opencl_atomic_load:
case AtomicExpr::AO__atomic_load_n:
  Form = Load;
  break;

case AtomicExpr::AO__atomic_load:
  Form = LoadCopy;
  break;

case AtomicExpr::AO__c11_atomic_store:
case AtomicExpr::AO__opencl_atomic_store:
case AtomicExpr::AO__atomic_store:
case AtomicExpr::AO__atomic_store_n:
  Form = Copy;
  break;

case AtomicExpr::AO__c11_atomic_fetch_add:
case AtomicExpr::AO__c11_atomic_fetch_sub:
case AtomicExpr::AO__opencl_atomic_fetch_add:
case AtomicExpr::AO__opencl_atomic_fetch_sub:
case AtomicExpr::AO__opencl_atomic_fetch_min:
case AtomicExpr::AO__opencl_atomic_fetch_max:
case AtomicExpr::AO__atomic_fetch_add:
case AtomicExpr::AO__atomic_fetch_sub:
case AtomicExpr::AO__atomic_add_fetch:
case AtomicExpr::AO__atomic_sub_fetch:
  IsAddSub = true;
  LLVM_FALLTHROUGH[[clang::fallthrough]];
case AtomicExpr::AO__c11_atomic_fetch_and:
case AtomicExpr::AO__c11_atomic_fetch_or:
case AtomicExpr::AO__c11_atomic_fetch_xor:
case AtomicExpr::AO__opencl_atomic_fetch_and:
case AtomicExpr::AO__opencl_atomic_fetch_or:
case AtomicExpr::AO__opencl_atomic_fetch_xor:
case AtomicExpr::AO__atomic_fetch_and:
case AtomicExpr::AO__atomic_fetch_or:
case AtomicExpr::AO__atomic_fetch_xor:
case AtomicExpr::AO__atomic_fetch_nand:
case AtomicExpr::AO__atomic_and_fetch:
case AtomicExpr::AO__atomic_or_fetch:
case AtomicExpr::AO__atomic_xor_fetch:
case AtomicExpr::AO__atomic_nand_fetch:
  Form = Arithmetic;
  break;

case AtomicExpr::AO__atomic_fetch_min:
case AtomicExpr::AO__atomic_fetch_max:
  IsMinMax = true;
  Form = Arithmetic;
  break;

case AtomicExpr::AO__c11_atomic_exchange:
case AtomicExpr::AO__opencl_atomic_exchange:
case AtomicExpr::AO__atomic_exchange_n:
  Form = Xchg;
  break;

case AtomicExpr::AO__atomic_exchange:
  Form = GNUXchg;
  break;

case AtomicExpr::AO__c11_atomic_compare_exchange_strong:
case AtomicExpr::AO__c11_atomic_compare_exchange_weak:
case AtomicExpr::AO__opencl_atomic_compare_exchange_strong:
case AtomicExpr::AO__opencl_atomic_compare_exchange_weak:
  Form = C11CmpXchg;
  break;

case AtomicExpr::AO__atomic_compare_exchange:
case AtomicExpr::AO__atomic_compare_exchange_n:
  Form = GNUCmpXchg;
  break;
}

unsigned AdjustedNumArgs = NumArgs[Form];
if (IsOpenCL && Op != AtomicExpr::AO__opencl_atomic_init)
  ++AdjustedNumArgs;
// Check we have the right number of arguments.
if (TheCall->getNumArgs() < AdjustedNumArgs) {
  Diag(TheCall->getEndLoc(), diag::err_typecheck_call_too_few_args)
      << 0 << AdjustedNumArgs << TheCall->getNumArgs()
      << TheCall->getCallee()->getSourceRange();
  return ExprError();
} else if (TheCall->getNumArgs() > AdjustedNumArgs) {
  Diag(TheCall->getArg(AdjustedNumArgs)->getBeginLoc(),
       diag::err_typecheck_call_too_many_args)
      << 0 << AdjustedNumArgs << TheCall->getNumArgs()
      << TheCall->getCallee()->getSourceRange();
  return ExprError();
}

// Inspect the first argument of the atomic operation.
Expr *Ptr = TheCall->getArg(0);
ExprResult ConvertedPtr = DefaultFunctionArrayLvalueConversion(Ptr);
if (ConvertedPtr.isInvalid())
  return ExprError();

Ptr = ConvertedPtr.get();
const PointerType *pointerType = Ptr->getType()->getAs<PointerType>();
if (!pointerType) {
  Diag(DRE->getBeginLoc(), diag::err_atomic_builtin_must_be_pointer)
      << Ptr->getType() << Ptr->getSourceRange();
  return ExprError();
}

// For a __c11 builtin, this should be a pointer to an _Atomic type.
QualType AtomTy = pointerType->getPointeeType(); // 'A'
QualType ValType = AtomTy; // 'C'
if (IsC11) {
  if (!AtomTy->isAtomicType()) {
    Diag(DRE->getBeginLoc(), diag::err_atomic_op_needs_atomic)
        << Ptr->getType() << Ptr->getSourceRange();
    return ExprError();
  }
  if ((Form != Load && Form != LoadCopy && AtomTy.isConstQualified()) ||
      AtomTy.getAddressSpace() == LangAS::opencl_constant) {
    Diag(DRE->getBeginLoc(), diag::err_atomic_op_needs_non_const_atomic)
        << (AtomTy.isConstQualified() ? 0 : 1) << Ptr->getType()
        << Ptr->getSourceRange();
    return ExprError();
  }
  ValType = AtomTy->getAs<AtomicType>()->getValueType();
} else if (Form != Load && Form != LoadCopy) {
  if (ValType.isConstQualified()) {
    Diag(DRE->getBeginLoc(), diag::err_atomic_op_needs_non_const_pointer)
        << Ptr->getType() << Ptr->getSourceRange();
    return ExprError();
  }
}

// For an arithmetic operation, the implied arithmetic must be well-formed.
if (Form == Arithmetic) {
  // gcc does not enforce these rules for GNU atomics, but we do so for sanity.
  if (IsAddSub && !ValType->isIntegerType()
      && !ValType->isPointerType()) {
    Diag(DRE->getBeginLoc(), diag::err_atomic_op_needs_atomic_int_or_ptr)
        << IsC11 << Ptr->getType() << Ptr->getSourceRange();
    return ExprError();
  }
  if (IsMinMax) {
    const BuiltinType *BT = ValType->getAs<BuiltinType>();
    if (!BT || (BT->getKind() != BuiltinType::Int &&
                BT->getKind() != BuiltinType::UInt)) {
      Diag(DRE->getBeginLoc(), diag::err_atomic_op_needs_int32_or_ptr);
      return ExprError();
    }
  }
  if (!IsAddSub && !IsMinMax && !ValType->isIntegerType()) {
    Diag(DRE->getBeginLoc(), diag::err_atomic_op_bitwise_needs_atomic_int)
        << IsC11 << Ptr->getType() << Ptr->getSourceRange();
    return ExprError();
  }
  if (IsC11 && ValType->isPointerType() &&
      RequireCompleteType(Ptr->getBeginLoc(), ValType->getPointeeType(),
                          diag::err_incomplete_type)) {
    return ExprError();
  }
} else if (IsN && !ValType->isIntegerType() && !ValType->isPointerType()) {
  // For __atomic_*_n operations, the value type must be a scalar integral or
  // pointer type which is 1, 2, 4, 8 or 16 bytes in length.
  Diag(DRE->getBeginLoc(), diag::err_atomic_op_needs_atomic_int_or_ptr)
      << IsC11 << Ptr->getType() << Ptr->getSourceRange();
  return ExprError();
}

if (!IsC11 && !AtomTy.isTriviallyCopyableType(Context) &&
    !AtomTy->isScalarType()) {
  // For GNU atomics, require a trivially-copyable type. This is not part of
  // the GNU atomics specification, but we enforce it for sanity.
  Diag(DRE->getBeginLoc(), diag::err_atomic_op_needs_trivial_copy)
      << Ptr->getType() << Ptr->getSourceRange();
  return ExprError();
}

switch (ValType.getObjCLifetime()) {
case Qualifiers::OCL_None:
case Qualifiers::OCL_ExplicitNone:
  // okay
  break;

case Qualifiers::OCL_Weak:
case Qualifiers::OCL_Strong:
case Qualifiers::OCL_Autoreleasing:
  // FIXME: Can this happen? By this point, ValType should be known
  // to be trivially copyable.
  Diag(DRE->getBeginLoc(), diag::err_arc_atomic_ownership)
      << ValType << Ptr->getSourceRange();
  return ExprError();
}

// All atomic operations have an overload which takes a pointer to a volatile
// 'A'.  We shouldn't let the volatile-ness of the pointee-type inject itself
// into the result or the other operands. Similarly atomic_load takes a
// pointer to a const 'A'.
ValType.removeLocalVolatile();
ValType.removeLocalConst();
QualType ResultType = ValType;
if (Form == Copy || Form == LoadCopy || Form == GNUXchg ||
    Form == Init)
  ResultType = Context.VoidTy;
else if (Form == C11CmpXchg || Form == GNUCmpXchg)
  ResultType = Context.BoolTy;

// The type of a parameter passed 'by value'. In the GNU atomics, such
// arguments are actually passed as pointers.
QualType ByValType = ValType; // 'CP'
bool IsPassedByAddress = false;
if (!IsC11 && !IsN) {
  ByValType = Ptr->getType();
  IsPassedByAddress = true;
}

// The first argument's non-CV pointer type is used to deduce the type of
// subsequent arguments, except for:
//  - weak flag (always converted to bool)
//  - memory order (always converted to int)
//  - scope  (always converted to int)
for (unsigned i = 0; i != TheCall->getNumArgs(); ++i) {
  QualType Ty;
  if (i < NumVals[Form] + 1) {
    switch (i) {
    case 0:
      // The first argument is always a pointer. It has a fixed type.
      // It is always dereferenced, a nullptr is undefined.
      CheckNonNullArgument(*this, TheCall->getArg(i), DRE->getBeginLoc());
      // Nothing else to do: we already know all we want about this pointer.
      continue;
    case 1:
      // The second argument is the non-atomic operand. For arithmetic, this
      // is always passed by value, and for a compare_exchange it is always
      // passed by address. For the rest, GNU uses by-address and C11 uses
      // by-value.
      assert(Form != Load)((Form != Load) ? static_cast<void> (0) : __assert_fail
 ("Form != Load", "/build/llvm-toolchain-snapshot-9~svn362543/tools/clang/lib/Sema/SemaChecking.cpp"
, 4735, __PRETTY_FUNCTION__));
      if (Form == Init || (Form == Arithmetic && ValType->isIntegerType()))
        Ty = ValType;
      else if (Form == Copy || Form == Xchg) {
        if (IsPassedByAddress)
          // The value pointer is always dereferenced, a nullptr is undefined.
          CheckNonNullArgument(*this, TheCall->getArg(i), DRE->getBeginLoc());
        Ty = ByValType;
      } else if (Form == Arithmetic)
        Ty = Context.getPointerDiffType();
      else {
        Expr *ValArg = TheCall->getArg(i);
        // The value pointer is always dereferenced, a nullptr is undefined.
        CheckNonNullArgument(*this, ValArg, DRE->getBeginLoc());
        LangAS AS = LangAS::Default;
        // Keep address space of non-atomic pointer type.
        if (const PointerType *PtrTy =
                ValArg->getType()->getAs<PointerType>()) {
          AS = PtrTy->getPointeeType().getAddressSpace();
        }
        Ty = Context.getPointerType(
            Context.getAddrSpaceQualType(ValType.getUnqualifiedType(), AS));
      }
      break;
    case 2:
      // The third argument to compare_exchange / GNU exchange is the desired
      // value, either by-value (for the C11 and *_n variant) or as a pointer.
      if (IsPassedByAddress)
        CheckNonNullArgument(*this, TheCall->getArg(i), DRE->getBeginLoc());
      Ty = ByValType;
      break;
    case 3:
      // The fourth argument to GNU compare_exchange is a 'weak' flag.
      Ty = Context.BoolTy;
      break;
    }
  } else {
    // The order(s) and scope are always converted to int.
    Ty = Context.IntTy;
  }

  InitializedEntity Entity =
      InitializedEntity::InitializeParameter(Context, Ty, false);
  ExprResult Arg = TheCall->getArg(i);
  Arg = PerformCopyInitialization(Entity, SourceLocation(), Arg);
  if (Arg.isInvalid())
    return true;
  TheCall->setArg(i, Arg.get());
}

// Permute the arguments into a 'consistent' order.
SmallVector<Expr*, 5> SubExprs;
SubExprs.push_back(Ptr);
switch (Form) {
case Init:
  // Note, AtomicExpr::getVal1() has a special case for this atomic.
  SubExprs.push_back(TheCall->getArg(1)); // Val1
  break;
case Load:
  SubExprs.push_back(TheCall->getArg(1)); // Order
  break;
case LoadCopy:
case Copy:
case Arithmetic:
case Xchg:
  SubExprs.push_back(TheCall->getArg(2)); // Order
  SubExprs.push_back(TheCall->getArg(1)); // Val1
  break;
case GNUXchg:
  // Note, AtomicExpr::getVal2() has a special case for this atomic.
  SubExprs.push_back(TheCall->getArg(3)); // Order
  SubExprs.push_back(TheCall->getArg(1)); // Val1
  SubExprs.push_back(TheCall->getArg(2)); // Val2
  break;
case C11CmpXchg:
  SubExprs.push_back(TheCall->getArg(3)); // Order
  SubExprs.push_back(TheCall->getArg(1)); // Val1
  SubExprs.push_back(TheCall->getArg(4)); // OrderFail
  SubExprs.push_back(TheCall->getArg(2)); // Val2
  break;
case GNUCmpXchg:
  SubExprs.push_back(TheCall->getArg(4)); // Order
  SubExprs.push_back(TheCall->getArg(1)); // Val1
  SubExprs.push_back(TheCall->getArg(5)); // OrderFail
  SubExprs.push_back(TheCall->getArg(2)); // Val2
  SubExprs.push_back(TheCall->getArg(3)); // Weak
  break;
}

if (SubExprs.size() >= 2 && Form != Init) {
  llvm::APSInt Result(32);
  if (SubExprs[1]->isIntegerConstantExpr(Result, Context) &&
      !isValidOrderingForOp(Result.getSExtValue(), Op))
    Diag(SubExprs[1]->getBeginLoc(),
         diag::warn_atomic_op_has_invalid_memory_order)
        << SubExprs[1]->getSourceRange();
}

if (auto ScopeModel = AtomicExpr::getScopeModel(Op)) {
  auto *Scope = TheCall->getArg(TheCall->getNumArgs() - 1);
  llvm::APSInt Result(32);
  if (Scope->isIntegerConstantExpr(Result, Context) &&
      !ScopeModel->isValid(Result.getZExtValue())) {
    Diag(Scope->getBeginLoc(), diag::err_atomic_op_has_invalid_synch_scope)
        << Scope->getSourceRange();
  }
  SubExprs.push_back(Scope);
}

AtomicExpr *AE =
    new (Context) AtomicExpr(TheCall->getCallee()->getBeginLoc(), SubExprs,
                             ResultType, Op, TheCall->getRParenLoc());

if ((Op == AtomicExpr::AO__c11_atomic_load ||
     Op == AtomicExpr::AO__c11_atomic_store ||
     Op == AtomicExpr::AO__opencl_atomic_load ||
     Op == AtomicExpr::AO__opencl_atomic_store ) &&
    Context.AtomicUsesUnsupportedLibcall(AE))
  Diag(AE->getBeginLoc(), diag::err_atomic_load_store_uses_lib)
      << ((Op == AtomicExpr::AO__c11_atomic_load ||
           Op == AtomicExpr::AO__opencl_atomic_load)
              ? 0
              : 1);

return AE;
4860}

4862/// checkBuiltinArgument - Given a call to a builtin function, perform
4863/// normal type-checking on the given argument, updating the call in
4864/// place.  This is useful when a builtin function requires custom
4865/// type-checking for some of its arguments but not necessarily all of
4866/// them.
4867///
4868/// Returns true on error.
4869static bool checkBuiltinArgument(Sema &S, CallExpr *E, unsigned ArgIndex) {
FunctionDecl *Fn = E->getDirectCallee();
assert(Fn && "builtin call without direct callee!")((Fn && "builtin call without direct callee!") ? static_cast
<void> (0) : __assert_fail ("Fn && \"builtin call without direct callee!\""
, "/build/llvm-toolchain-snapshot-9~svn362543/tools/clang/lib/Sema/SemaChecking.cpp"
, 4871, __PRETTY_FUNCTION__));

ParmVarDecl *Param = Fn->getParamDecl(ArgIndex);
InitializedEntity Entity =
  InitializedEntity::InitializeParameter(S.Context, Param);

ExprResult Arg = E->getArg(0);
Arg = S.PerformCopyInitialization(Entity, SourceLocation(), Arg);
if (Arg.isInvalid())
  return true;

E->setArg(ArgIndex, Arg.get());
return false;
4884}

4886/// We have a call to a function like __sync_fetch_and_add, which is an
4887/// overloaded function based on the pointer type of its first argument.
4888/// The main BuildCallExpr routines have already promoted the types of
4889/// arguments because all of these calls are prototyped as void(...).
4890///
4891/// This function goes through and does final semantic checking for these
4892/// builtins, as well as generating any warnings.
4893ExprResult
4894Sema::SemaBuiltinAtomicOverloaded(ExprResult TheCallResult) {
CallExpr *TheCall = static_cast<CallExpr *>(TheCallResult.get());
Expr *Callee = TheCall->getCallee();
DeclRefExpr *DRE = cast<DeclRefExpr>(Callee->IgnoreParenCasts());
FunctionDecl *FDecl = cast<FunctionDecl>(DRE->getDecl());

// Ensure that we have at least one argument to do type inference from.
if (TheCall->getNumArgs() < 1) {
  Diag(TheCall->getEndLoc(), diag::err_typecheck_call_too_few_args_at_least)
      << 0 << 1 << TheCall->getNumArgs() << Callee->getSourceRange();
  return ExprError();
}

// Inspect the first argument of the atomic builtin.  This should always be
// a pointer type, whose element is an integral scalar or pointer type.
// Because it is a pointer type, we don't have to worry about any implicit
// casts here.
// FIXME: We don't allow floating point scalars as input.
Expr *FirstArg = TheCall->getArg(0);
ExprResult FirstArgResult = DefaultFunctionArrayLvalueConversion(FirstArg);
if (FirstArgResult.isInvalid())
  return ExprError();
FirstArg = FirstArgResult.get();
TheCall->setArg(0, FirstArg);

const PointerType *pointerType = FirstArg->getType()->getAs<PointerType>();
if (!pointerType) {
  Diag(DRE->getBeginLoc(), diag::err_atomic_builtin_must_be_pointer)
      << FirstArg->getType() << FirstArg->getSourceRange();
  return ExprError();
}

QualType ValType = pointerType->getPointeeType();
if (!ValType->isIntegerType() && !ValType->isAnyPointerType() &&
    !ValType->isBlockPointerType()) {
  Diag(DRE->getBeginLoc(), diag::err_atomic_builtin_must_be_pointer_intptr)
      << FirstArg->getType() << FirstArg->getSourceRange();
  return ExprError();
}

if (ValType.isConstQualified()) {
  Diag(DRE->getBeginLoc(), diag::err_atomic_builtin_cannot_be_const)
      << FirstArg->getType() << FirstArg->getSourceRange();
  return ExprError();
}

switch (ValType.getObjCLifetime()) {
case Qualifiers::OCL_None:
case Qualifiers::OCL_ExplicitNone:
  // okay
  break;

case Qualifiers::OCL_Weak:
case Qualifiers::OCL_Strong:
case Qualifiers::OCL_Autoreleasing:
  Diag(DRE->getBeginLoc(), diag::err_arc_atomic_ownership)
      << ValType << FirstArg->getSourceRange();
  return ExprError();
}

// Strip any qualifiers off ValType.
ValType = ValType.getUnqualifiedType();

// The majority of builtins return a value, but a few have special return
// types, so allow them to override appropriately below.
QualType ResultType = ValType;

// We need to figure out which concrete builtin this maps onto.  For example,
// __sync_fetch_and_add with a 2 byte object turns into
// __sync_fetch_and_add_2.
4964#define BUILTIN_ROW(x) \
{ Builtin::BI##x##_1, Builtin::BI##x##_2, Builtin::BI##x##_4, \
  Builtin::BI##x##_8, Builtin::BI##x##_16 }

static const unsigned BuiltinIndices[][5] = {
  BUILTIN_ROW(__sync_fetch_and_add),
  BUILTIN_ROW(__sync_fetch_and_sub),
  BUILTIN_ROW(__sync_fetch_and_or),
  BUILTIN_ROW(__sync_fetch_and_and),
  BUILTIN_ROW(__sync_fetch_and_xor),
  BUILTIN_ROW(__sync_fetch_and_nand),

  BUILTIN_ROW(__sync_add_and_fetch),
  BUILTIN_ROW(__sync_sub_and_fetch),
  BUILTIN_ROW(__sync_and_and_fetch),
  BUILTIN_ROW(__sync_or_and_fetch),
  BUILTIN_ROW(__sync_xor_and_fetch),
  BUILTIN_ROW(__sync_nand_and_fetch),

  BUILTIN_ROW(__sync_val_compare_and_swap),
  BUILTIN_ROW(__sync_bool_compare_and_swap),
  BUILTIN_ROW(__sync_lock_test_and_set),
  BUILTIN_ROW(__sync_lock_release),
  BUILTIN_ROW(__sync_swap)
};
4989#undef BUILTIN_ROW

// Determine the index of the size.
unsigned SizeIndex;
switch (Context.getTypeSizeInChars(ValType).getQuantity()) {
case 1: SizeIndex = 0; break;
case 2: SizeIndex = 1; break;
case 4: SizeIndex = 2; break;
case 8: SizeIndex = 3; break;
case 16: SizeIndex = 4; break;
default:
  Diag(DRE->getBeginLoc(), diag::err_atomic_builtin_pointer_size)
      << FirstArg->getType() << FirstArg->getSourceRange();
  return ExprError();
}

// Each of these builtins has one pointer argument, followed by some number of
// values (0, 1 or 2) followed by a potentially empty varags list of stuff
// that we ignore.  Find out which row of BuiltinIndices to read from as well
// as the number of fixed args.
unsigned BuiltinID = FDecl->getBuiltinID();
unsigned BuiltinIndex, NumFixed = 1;
bool WarnAboutSemanticsChange = false;
switch (BuiltinID) {
default: llvm_unreachable("Unknown overloaded atomic builtin!")::llvm::llvm_unreachable_internal("Unknown overloaded atomic builtin!"
, "/build/llvm-toolchain-snapshot-9~svn362543/tools/clang/lib/Sema/SemaChecking.cpp"
, 5013);
case Builtin::BI__sync_fetch_and_add:
case Builtin::BI__sync_fetch_and_add_1:
case Builtin::BI__sync_fetch_and_add_2:
case Builtin::BI__sync_fetch_and_add_4:
case Builtin::BI__sync_fetch_and_add_8:
case Builtin::BI__sync_fetch_and_add_16:
  BuiltinIndex = 0;
  break;

case Builtin::BI__sync_fetch_and_sub:
case Builtin::BI__sync_fetch_and_sub_1:
case Builtin::BI__sync_fetch_and_sub_2:
case Builtin::BI__sync_fetch_and_sub_4:
case Builtin::BI__sync_fetch_and_sub_8:
case Builtin::BI__sync_fetch_and_sub_16:
  BuiltinIndex = 1;
  break;

case Builtin::BI__sync_fetch_and_or:
case Builtin::BI__sync_fetch_and_or_1:
case Builtin::BI__sync_fetch_and_or_2:
case Builtin::BI__sync_fetch_and_or_4:
case Builtin::BI__sync_fetch_and_or_8:
case Builtin::BI__sync_fetch_and_or_16:
  BuiltinIndex = 2;
  break;

case Builtin::BI__sync_fetch_and_and:
case Builtin::BI__sync_fetch_and_and_1:
case Builtin::BI__sync_fetch_and_and_2:
case Builtin::BI__sync_fetch_and_and_4:
case Builtin::BI__sync_fetch_and_and_8:
case Builtin::BI__sync_fetch_and_and_16:
  BuiltinIndex = 3;
  break;

case Builtin::BI__sync_fetch_and_xor:
case Builtin::BI__sync_fetch_and_xor_1:
case Builtin::BI__sync_fetch_and_xor_2:
case Builtin::BI__sync_fetch_and_xor_4:
case Builtin::BI__sync_fetch_and_xor_8:
case Builtin::BI__sync_fetch_and_xor_16:
  BuiltinIndex = 4;
  break;

case Builtin::BI__sync_fetch_and_nand:
case Builtin::BI__sync_fetch_and_nand_1:
case Builtin::BI__sync_fetch_and_nand_2:
case Builtin::BI__sync_fetch_and_nand_4:
case Builtin::BI__sync_fetch_and_nand_8:
case Builtin::BI__sync_fetch_and_nand_16:
  BuiltinIndex = 5;
  WarnAboutSemanticsChange = true;
  break;

case Builtin::BI__sync_add_and_fetch:
case Builtin::BI__sync_add_and_fetch_1:
case Builtin::BI__sync_add_and_fetch_2:
case Builtin::BI__sync_add_and_fetch_4:
case Builtin::BI__sync_add_and_fetch_8:
case Builtin::BI__sync_add_and_fetch_16:
  BuiltinIndex = 6;
  break;

case Builtin::BI__sync_sub_and_fetch:
case Builtin::BI__sync_sub_and_fetch_1:
case Builtin::BI__sync_sub_and_fetch_2:
case Builtin::BI__sync_sub_and_fetch_4:
case Builtin::BI__sync_sub_and_fetch_8:
case Builtin::BI__sync_sub_and_fetch_16:
  BuiltinIndex = 7;
  break;

case Builtin::BI__sync_and_and_fetch:
case Builtin::BI__sync_and_and_fetch_1:
case Builtin::BI__sync_and_and_fetch_2:
case Builtin::BI__sync_and_and_fetch_4:
case Builtin::BI__sync_and_and_fetch_8:
case Builtin::BI__sync_and_and_fetch_16:
  BuiltinIndex = 8;
  break;

case Builtin::BI__sync_or_and_fetch:
case Builtin::BI__sync_or_and_fetch_1:
case Builtin::BI__sync_or_and_fetch_2:
case Builtin::BI__sync_or_and_fetch_4:
case Builtin::BI__sync_or_and_fetch_8:
case Builtin::BI__sync_or_and_fetch_16:
  BuiltinIndex = 9;
  break;

case Builtin::BI__sync_xor_and_fetch:
case Builtin::BI__sync_xor_and_fetch_1:
case Builtin::BI__sync_xor_and_fetch_2:
case Builtin::BI__sync_xor_and_fetch_4:
case Builtin::BI__sync_xor_and_fetch_8:
case Builtin::BI__sync_xor_and_fetch_16:
  BuiltinIndex = 10;
  break;

case Builtin::BI__sync_nand_and_fetch:
case Builtin::BI__sync_nand_and_fetch_1:
case Builtin::BI__sync_nand_and_fetch_2:
case Builtin::BI__sync_nand_and_fetch_4:
case Builtin::BI__sync_nand_and_fetch_8:
case Builtin::BI__sync_nand_and_fetch_16:
  BuiltinIndex = 11;
  WarnAboutSemanticsChange = true;
  break;

case Builtin::BI__sync_val_compare_and_swap:
case Builtin::BI__sync_val_compare_and_swap_1:
case Builtin::BI__sync_val_compare_and_swap_2:
case Builtin::BI__sync_val_compare_and_swap_4:
case Builtin::BI__sync_val_compare_and_swap_8:
case Builtin::BI__sync_val_compare_and_swap_16:
  BuiltinIndex = 12;
  NumFixed = 2;
  break;

case Builtin::BI__sync_bool_compare_and_swap:
case Builtin::BI__sync_bool_compare_and_swap_1:
case Builtin::BI__sync_bool_compare_and_swap_2:
case Builtin::BI__sync_bool_compare_and_swap_4:
case Builtin::BI__sync_bool_compare_and_swap_8:
case Builtin::BI__sync_bool_compare_and_swap_16:
  BuiltinIndex = 13;
  NumFixed = 2;
  ResultType = Context.BoolTy;
  break;

case Builtin::BI__sync_lock_test_and_set:
case Builtin::BI__sync_lock_test_and_set_1:
case Builtin::BI__sync_lock_test_and_set_2:
case Builtin::BI__sync_lock_test_and_set_4:
case Builtin::BI__sync_lock_test_and_set_8:
case Builtin::BI__sync_lock_test_and_set_16:
  BuiltinIndex = 14;
  break;

case Builtin::BI__sync_lock_release:
case Builtin::BI__sync_lock_release_1:
case Builtin::BI__sync_lock_release_2:
case Builtin::BI__sync_lock_release_4:
case Builtin::BI__sync_lock_release_8:
case Builtin::BI__sync_lock_release_16:
  BuiltinIndex = 15;
  NumFixed = 0;
  ResultType = Context.VoidTy;
  break;

case Builtin::BI__sync_swap:
case Builtin::BI__sync_swap_1:
case Builtin::BI__sync_swap_2:
case Builtin::BI__sync_swap_4:
case Builtin::BI__sync_swap_8:
case Builtin::BI__sync_swap_16:
  BuiltinIndex = 16;
  break;
}

// Now that we know how many fixed arguments we expect, first check that we
// have at least that many.
if (TheCall->getNumArgs() < 1+NumFixed) {
  Diag(TheCall->getEndLoc(), diag::err_typecheck_call_too_few_args_at_least)
      << 0 << 1 + NumFixed << TheCall->getNumArgs()
      << Callee->getSourceRange();
  return ExprError();
}

Diag(TheCall->getEndLoc(), diag::warn_atomic_implicit_seq_cst)
    << Callee->getSourceRange();

if (WarnAboutSemanticsChange) {
  Diag(TheCall->getEndLoc(), diag::warn_sync_fetch_and_nand_semantics_change)
      << Callee->getSourceRange();
}

// Get the decl for the concrete builtin from this, we can tell what the
// concrete integer type we should convert to is.
unsigned NewBuiltinID = BuiltinIndices[BuiltinIndex][SizeIndex];
const char *NewBuiltinName = Context.BuiltinInfo.getName(NewBuiltinID);
FunctionDecl *NewBuiltinDecl;
if (NewBuiltinID == BuiltinID)
  NewBuiltinDecl = FDecl;
else {
  // Perform builtin lookup to avoid redeclaring it.
  DeclarationName DN(&Context.Idents.get(NewBuiltinName));
  LookupResult Res(*this, DN, DRE->getBeginLoc(), LookupOrdinaryName);
  LookupName(Res, TUScope, /*AllowBuiltinCreation=*/true);
  assert(Res.getFoundDecl())((Res.getFoundDecl()) ? static_cast<void> (0) : __assert_fail
 ("Res.getFoundDecl()", "/build/llvm-toolchain-snapshot-9~svn362543/tools/clang/lib/Sema/SemaChecking.cpp"
, 5204, __PRETTY_FUNCTION__));
  NewBuiltinDecl = dyn_cast<FunctionDecl>(Res.getFoundDecl());
  if (!NewBuiltinDecl)
    return ExprError();
}

// The first argument --- the pointer --- has a fixed type; we
// deduce the types of the rest of the arguments accordingly.  Walk
// the remaining arguments, converting them to the deduced value type.
for (unsigned i = 0; i != NumFixed; ++i) {
  ExprResult Arg = TheCall->getArg(i+1);

  // GCC does an implicit conversion to the pointer or integer ValType.  This
  // can fail in some cases (1i -> int**), check for this error case now.
  // Initialize the argument.
  InitializedEntity Entity = InitializedEntity::InitializeParameter(Context,
                                                 ValType, /*consume*/ false);
  Arg = PerformCopyInitialization(Entity, SourceLocation(), Arg);
  if (Arg.isInvalid())
    return ExprError();

  // Okay, we have something that *can* be converted to the right type.  Check
  // to see if there is a potentially weird extension going on here.  This can
  // happen when you do an atomic operation on something like an char* and
  // pass in 42.  The 42 gets converted to char.  This is even more strange
  // for things like 45.123 -> char, etc.
  // FIXME: Do this check.
  TheCall->setArg(i+1, Arg.get());
}

// Create a new DeclRefExpr to refer to the new decl.
DeclRefExpr* NewDRE = DeclRefExpr::Create(
    Context,
    DRE->getQualifierLoc(),
    SourceLocation(),
    NewBuiltinDecl,
    /*enclosing*/ false,
    DRE->getLocation(),
    Context.BuiltinFnTy,
    DRE->getValueKind());

// Set the callee in the CallExpr.
// FIXME: This loses syntactic information.
QualType CalleePtrTy = Context.getPointerType(NewBuiltinDecl->getType());
ExprResult PromotedCall = ImpCastExprToType(NewDRE, CalleePtrTy,
                                            CK_BuiltinFnToFnPtr);
TheCall->setCallee(PromotedCall.get());

// Change the result type of the call to match the original value type. This
// is arbitrary, but the codegen for these builtins ins design to handle it
// gracefully.
TheCall->setType(ResultType);

return TheCallResult;
5258}

5260/// SemaBuiltinNontemporalOverloaded - We have a call to
5261/// __builtin_nontemporal_store or __builtin_nontemporal_load, which is an
5262/// overloaded function based on the pointer type of its last argument.
5263///
5264/// This function goes through and does final semantic checking for these
5265/// builtins.
5266ExprResult Sema::SemaBuiltinNontemporalOverloaded(ExprResult TheCallResult) {
CallExpr *TheCall = (CallExpr *)TheCallResult.get();
DeclRefExpr *DRE =
    cast<DeclRefExpr>(TheCall->getCallee()->IgnoreParenCasts());
FunctionDecl *FDecl = cast<FunctionDecl>(DRE->getDecl());
unsigned BuiltinID = FDecl->getBuiltinID();
assert((BuiltinID == Builtin::BI__builtin_nontemporal_store ||(((BuiltinID == Builtin::BI__builtin_nontemporal_store || BuiltinID
 == Builtin::BI__builtin_nontemporal_load) && "Unexpected nontemporal load/store builtin!"
) ? static_cast<void> (0) : __assert_fail ("(BuiltinID == Builtin::BI__builtin_nontemporal_store || BuiltinID == Builtin::BI__builtin_nontemporal_load) && \"Unexpected nontemporal load/store builtin!\""
, "/build/llvm-toolchain-snapshot-9~svn362543/tools/clang/lib/Sema/SemaChecking.cpp"
, 5274, __PRETTY_FUNCTION__))
        BuiltinID == Builtin::BI__builtin_nontemporal_load) &&(((BuiltinID == Builtin::BI__builtin_nontemporal_store || BuiltinID
 == Builtin::BI__builtin_nontemporal_load) && "Unexpected nontemporal load/store builtin!"
) ? static_cast<void> (0) : __assert_fail ("(BuiltinID == Builtin::BI__builtin_nontemporal_store || BuiltinID == Builtin::BI__builtin_nontemporal_load) && \"Unexpected nontemporal load/store builtin!\""
, "/build/llvm-toolchain-snapshot-9~svn362543/tools/clang/lib/Sema/SemaChecking.cpp"
, 5274, __PRETTY_FUNCTION__))
       "Unexpected nontemporal load/store builtin!")(((BuiltinID == Builtin::BI__builtin_nontemporal_store || BuiltinID
 == Builtin::BI__builtin_nontemporal_load) && "Unexpected nontemporal load/store builtin!"
) ? static_cast<void> (0) : __assert_fail ("(BuiltinID == Builtin::BI__builtin_nontemporal_store || BuiltinID == Builtin::BI__builtin_nontemporal_load) && \"Unexpected nontemporal load/store builtin!\""
, "/build/llvm-toolchain-snapshot-9~svn362543/tools/clang/lib/Sema/SemaChecking.cpp"
, 5274, __PRETTY_FUNCTION__));
bool isStore = BuiltinID == Builtin::BI__builtin_nontemporal_store;
unsigned numArgs = isStore ? 2 : 1;

// Ensure that we have the proper number of arguments.
if (checkArgCount(*this, TheCall, numArgs))
  return ExprError();

// Inspect the last argument of the nontemporal builtin.  This should always
// be a pointer type, from which we imply the type of the memory access.
// Because it is a pointer type, we don't have to worry about any implicit
// casts here.
Expr *PointerArg = TheCall->getArg(numArgs - 1);
ExprResult PointerArgResult =
    DefaultFunctionArrayLvalueConversion(PointerArg);

if (PointerArgResult.isInvalid())
  return ExprError();
PointerArg = PointerArgResult.get();
TheCall->setArg(numArgs - 1, PointerArg);

const PointerType *pointerType = PointerArg->getType()->getAs<PointerType>();
if (!pointerType) {
  Diag(DRE->getBeginLoc(), diag::err_nontemporal_builtin_must_be_pointer)
      << PointerArg->getType() << PointerArg->getSourceRange();
  return ExprError();
}

QualType ValType = pointerType->getPointeeType();

// Strip any qualifiers off ValType.
ValType = ValType.getUnqualifiedType();
if (!ValType->isIntegerType() && !ValType->isAnyPointerType() &&
    !ValType->isBlockPointerType() && !ValType->isFloatingType() &&
    !ValType->isVectorType()) {
  Diag(DRE->getBeginLoc(),
       diag::err_nontemporal_builtin_must_be_pointer_intfltptr_or_vector)
      << PointerArg->getType() << PointerArg->getSourceRange();
  return ExprError();
}

if (!isStore) {
  TheCall->setType(ValType);
  return TheCallResult;
}

ExprResult ValArg = TheCall->getArg(0);
InitializedEntity Entity = InitializedEntity::InitializeParameter(
    Context, ValType, /*consume*/ false);
ValArg = PerformCopyInitialization(Entity, SourceLocation(), ValArg);
if (ValArg.isInvalid())
  return ExprError();

TheCall->setArg(0, ValArg.get());
TheCall->setType(Context.VoidTy);
return TheCallResult;
5330}

5332/// CheckObjCString - Checks that the argument to the builtin
5333/// CFString constructor is correct
5334/// Note: It might also make sense to do the UTF-16 conversion here (would
5335/// simplify the backend).
5336bool Sema::CheckObjCString(Expr *Arg) {
Arg = Arg->IgnoreParenCasts();
StringLiteral *Literal = dyn_cast<StringLiteral>(Arg);

if (!Literal || !Literal->isAscii()) {
  Diag(Arg->getBeginLoc(), diag::err_cfstring_literal_not_string_constant)
      << Arg->getSourceRange();
  return true;
}

if (Literal->containsNonAsciiOrNull()) {
  StringRef String = Literal->getString();
  unsigned NumBytes = String.size();
  SmallVector<llvm::UTF16, 128> ToBuf(NumBytes);
  const llvm::UTF8 *FromPtr = (const llvm::UTF8 *)String.data();
  llvm::UTF16 *ToPtr = &ToBuf[0];

  llvm::ConversionResult Result =
      llvm::ConvertUTF8toUTF16(&FromPtr, FromPtr + NumBytes, &ToPtr,
                               ToPtr + NumBytes, llvm::strictConversion);
  // Check for conversion failure.
  if (Result != llvm::conversionOK)
    Diag(Arg->getBeginLoc(), diag::warn_cfstring_truncated)
        << Arg->getSourceRange();
}
return false;
5362}

5364/// CheckObjCString - Checks that the format string argument to the os_log()
5365/// and os_trace() functions is correct, and converts it to const char *.
5366ExprResult Sema::CheckOSLogFormatStringArg(Expr *Arg) {
Arg = Arg->IgnoreParenCasts();
auto *Literal = dyn_cast<StringLiteral>(Arg);
if (!Literal) {
  if (auto *ObjcLiteral = dyn_cast<ObjCStringLiteral>(Arg)) {
    Literal = ObjcLiteral->getString();
  }
}

if (!Literal || (!Literal->isAscii() && !Literal->isUTF8())) {
  return ExprError(
      Diag(Arg->getBeginLoc(), diag::err_os_log_format_not_string_constant)
      << Arg->getSourceRange());
}

ExprResult Result(Literal);
QualType ResultTy = Context.getPointerType(Context.CharTy.withConst());
InitializedEntity Entity =
    InitializedEntity::InitializeParameter(Context, ResultTy, false);
Result = PerformCopyInitialization(Entity, SourceLocation(), Result);
return Result;
5387}

5389/// Check that the user is calling the appropriate va_start builtin for the
5390/// target and calling convention.
5391static bool checkVAStartABI(Sema &S, unsigned BuiltinID, Expr *Fn) {
const llvm::Triple &TT = S.Context.getTargetInfo().getTriple();
bool IsX64 = TT.getArch() == llvm::Triple::x86_64;
bool IsAArch64 = TT.getArch() == llvm::Triple::aarch64;
bool IsWindows = TT.isOSWindows();
bool IsMSVAStart = BuiltinID == Builtin::BI__builtin_ms_va_start;
if (IsX64 || IsAArch64) {
  CallingConv CC = CC_C;
  if (const FunctionDecl *FD = S.getCurFunctionDecl())
    CC = FD->getType()->getAs<FunctionType>()->getCallConv();
  if (IsMSVAStart) {
    // Don't allow this in System V ABI functions.
    if (CC == CC_X86_64SysV || (!IsWindows && CC != CC_Win64))
      return S.Diag(Fn->getBeginLoc(),
                    diag::err_ms_va_start_used_in_sysv_function);
  } else {
    // On x86-64/AArch64 Unix, don't allow this in Win64 ABI functions.
    // On x64 Windows, don't allow this in System V ABI functions.
    // (Yes, that means there's no corresponding way to support variadic
    // System V ABI functions on Windows.)
    if ((IsWindows && CC == CC_X86_64SysV) ||
        (!IsWindows && CC == CC_Win64))
      return S.Diag(Fn->getBeginLoc(),
                    diag::err_va_start_used_in_wrong_abi_function)
             << !IsWindows;
  }
  return false;
}

if (IsMSVAStart)
  return S.Diag(Fn->getBeginLoc(), diag::err_builtin_x64_aarch64_only);
return false;
5423}

5425static bool checkVAStartIsInVariadicFunction(Sema &S, Expr *Fn,
                                           ParmVarDecl **LastParam = nullptr) {
// Determine whether the current function, block, or obj-c method is variadic
// and get its parameter list.
bool IsVariadic = false;
ArrayRef<ParmVarDecl *> Params;
DeclContext *Caller = S.CurContext;
if (auto *Block = dyn_cast<BlockDecl>(Caller)) {
  IsVariadic = Block->isVariadic();
  Params = Block->parameters();
} else if (auto *FD = dyn_cast<FunctionDecl>(Caller)) {
  IsVariadic = FD->isVariadic();
  Params = FD->parameters();
} else if (auto *MD = dyn_cast<ObjCMethodDecl>(Caller)) {
  IsVariadic = MD->isVariadic();
  // FIXME: This isn't correct for methods (results in bogus warning).
  Params = MD->parameters();
} else if (isa<CapturedDecl>(Caller)) {
  // We don't support va_start in a CapturedDecl.
  S.Diag(Fn->getBeginLoc(), diag::err_va_start_captured_stmt);
  return true;
} else {
  // This must be some other declcontext that parses exprs.
  S.Diag(Fn->getBeginLoc(), diag::err_va_start_outside_function);
  return true;
}

if (!IsVariadic) {
  S.Diag(Fn->getBeginLoc(), diag::err_va_start_fixed_function);
  return true;
}

if (LastParam)
  *LastParam = Params.empty() ? nullptr : Params.back();

return false;
5461}

5463/// Check the arguments to '__builtin_va_start' or '__builtin_ms_va_start'
5464/// for validity.  Emit an error and return true on failure; return false
5465/// on success.
5466bool Sema::SemaBuiltinVAStart(unsigned BuiltinID, CallExpr *TheCall) {
Expr *Fn = TheCall->getCallee();

if (checkVAStartABI(*this, BuiltinID, Fn))
  return true;

if (TheCall->getNumArgs() > 2) {
  Diag(TheCall->getArg(2)->getBeginLoc(),
       diag::err_typecheck_call_too_many_args)
      << 0 /*function call*/ << 2 << TheCall->getNumArgs()
      << Fn->getSourceRange()
      << SourceRange(TheCall->getArg(2)->getBeginLoc(),
                     (*(TheCall->arg_end() - 1))->getEndLoc());
  return true;
}

if (TheCall->getNumArgs() < 2) {
  return Diag(TheCall->getEndLoc(),
              diag::err_typecheck_call_too_few_args_at_least)
         << 0 /*function call*/ << 2 << TheCall->getNumArgs();
}

// Type-check the first argument normally.
if (checkBuiltinArgument(*this, TheCall, 0))
  return true;

// Check that the current function is variadic, and get its last parameter.
ParmVarDecl *LastParam;
if (checkVAStartIsInVariadicFunction(*this, Fn, &LastParam))
  return true;

// Verify that the second argument to the builtin is the last argument of the
// current function or method.
bool SecondArgIsLastNamedArgument = false;
const Expr *Arg = TheCall->getArg(1)->IgnoreParenCasts();

// These are valid if SecondArgIsLastNamedArgument is false after the next
// block.
QualType Type;
SourceLocation ParamLoc;
bool IsCRegister = false;

if (const DeclRefExpr *DR = dyn_cast<DeclRefExpr>(Arg)) {
  if (const ParmVarDecl *PV = dyn_cast<ParmVarDecl>(DR->getDecl())) {
    SecondArgIsLastNamedArgument = PV == LastParam;

    Type = PV->getType();
    ParamLoc = PV->getLocation();
    IsCRegister =
        PV->getStorageClass() == SC_Register && !getLangOpts().CPlusPlus;
  }
}

if (!SecondArgIsLastNamedArgument)
  Diag(TheCall->getArg(1)->getBeginLoc(),
       diag::warn_second_arg_of_va_start_not_last_named_param);
else if (IsCRegister || Type->isReferenceType() ||
         Type->isSpecificBuiltinType(BuiltinType::Float) || [=] {
           // Promotable integers are UB, but enumerations need a bit of
           // extra checking to see what their promotable type actually is.
           if (!Type->isPromotableIntegerType())
             return false;
           if (!Type->isEnumeralType())
             return true;
           const EnumDecl *ED = Type->getAs<EnumType>()->getDecl();
           return !(ED &&
                    Context.typesAreCompatible(ED->getPromotionType(), Type));
         }()) {
  unsigned Reason = 0;
  if (Type->isReferenceType())  Reason = 1;
  else if (IsCRegister)         Reason = 2;
  Diag(Arg->getBeginLoc(), diag::warn_va_start_type_is_undefined) << Reason;
  Diag(ParamLoc, diag::note_parameter_type) << Type;
}

TheCall->setType(Context.VoidTy);
return false;
5543}

5545bool Sema::SemaBuiltinVAStartARMMicrosoft(CallExpr *Call) {
// void __va_start(va_list *ap, const char *named_addr, size_t slot_size,
//                 const char *named_addr);

Expr *Func = Call->getCallee();

if (Call->getNumArgs() < 3)
  return Diag(Call->getEndLoc(),
              diag::err_typecheck_call_too_few_args_at_least)
         << 0 /*function call*/ << 3 << Call->getNumArgs();

// Type-check the first argument normally.
if (checkBuiltinArgument(*this, Call, 0))
  return true;

// Check that the current function is variadic.
if (checkVAStartIsInVariadicFunction(*this, Func))
  return true;

// __va_start on Windows does not validate the parameter qualifiers

const Expr *Arg1 = Call->getArg(1)->IgnoreParens();
const Type *Arg1Ty = Arg1->getType().getCanonicalType().getTypePtr();

const Expr *Arg2 = Call->getArg(2)->IgnoreParens();
const Type *Arg2Ty = Arg2->getType().getCanonicalType().getTypePtr();

const QualType &ConstCharPtrTy =
    Context.getPointerType(Context.CharTy.withConst());
if (!Arg1Ty->isPointerType() ||
    Arg1Ty->getPointeeType().withoutLocalFastQualifiers() != Context.CharTy)
  Diag(Arg1->getBeginLoc(), diag::err_typecheck_convert_incompatible)
      << Arg1->getType() << ConstCharPtrTy << 1 /* different class */
      << 0                                      /* qualifier difference */
      << 3                                      /* parameter mismatch */
      << 2 << Arg1->getType() << ConstCharPtrTy;

const QualType SizeTy = Context.getSizeType();
if (Arg2Ty->getCanonicalTypeInternal().withoutLocalFastQualifiers() != SizeTy)
  Diag(Arg2->getBeginLoc(), diag::err_typecheck_convert_incompatible)
      << Arg2->getType() << SizeTy << 1 /* different class */
      << 0                              /* qualifier difference */
      << 3                              /* parameter mismatch */
      << 3 << Arg2->getType() << SizeTy;

return false;
5591}

5593/// SemaBuiltinUnorderedCompare - Handle functions like __builtin_isgreater and
5594/// friends.  This is declared to take (...), so we have to check everything.
5595bool Sema::SemaBuiltinUnorderedCompare(CallExpr *TheCall) {
if (TheCall->getNumArgs() < 2)
  return Diag(TheCall->getEndLoc(), diag::err_typecheck_call_too_few_args)
         << 0 << 2 << TheCall->getNumArgs() /*function call*/;
if (TheCall->getNumArgs() > 2)
  return Diag(TheCall->getArg(2)->getBeginLoc(),
              diag::err_typecheck_call_too_many_args)
         << 0 /*function call*/ << 2 << TheCall->getNumArgs()
         << SourceRange(TheCall->getArg(2)->getBeginLoc(),
                        (*(TheCall->arg_end() - 1))->getEndLoc());

ExprResult OrigArg0 = TheCall->getArg(0);
ExprResult OrigArg1 = TheCall->getArg(1);

// Do standard promotions between the two arguments, returning their common
// type.
QualType Res = UsualArithmeticConversions(OrigArg0, OrigArg1, false);
if (OrigArg0.isInvalid() || OrigArg1.isInvalid())
  return true;

// Make sure any conversions are pushed back into the call; this is
// type safe since unordered compare builtins are declared as "_Bool
// foo(...)".
TheCall->setArg(0, OrigArg0.get());
TheCall->setArg(1, OrigArg1.get());

if (OrigArg0.get()->isTypeDependent() || OrigArg1.get()->isTypeDependent())
  return false;

// If the common type isn't a real floating type, then the arguments were
// invalid for this operation.
if (Res.isNull() || !Res->isRealFloatingType())
  return Diag(OrigArg0.get()->getBeginLoc(),
              diag::err_typecheck_call_invalid_ordered_compare)
         << OrigArg0.get()->getType() << OrigArg1.get()->getType()
         << SourceRange(OrigArg0.get()->getBeginLoc(),
                        OrigArg1.get()->getEndLoc());

return false;
5634}

5636/// SemaBuiltinSemaBuiltinFPClassification - Handle functions like
5637/// __builtin_isnan and friends.  This is declared to take (...), so we have
5638/// to check everything. We expect the last argument to be a floating point
5639/// value.
5640bool Sema::SemaBuiltinFPClassification(CallExpr *TheCall, unsigned NumArgs) {
if (TheCall->getNumArgs() < NumArgs)
  return Diag(TheCall->getEndLoc(), diag::err_typecheck_call_too_few_args)
         << 0 << NumArgs << TheCall->getNumArgs() /*function call*/;
if (TheCall->getNumArgs() > NumArgs)
  return Diag(TheCall->getArg(NumArgs)->getBeginLoc(),
              diag::err_typecheck_call_too_many_args)
         << 0 /*function call*/ << NumArgs << TheCall->getNumArgs()
         << SourceRange(TheCall->getArg(NumArgs)->getBeginLoc(),
                        (*(TheCall->arg_end() - 1))->getEndLoc());

Expr *OrigArg = TheCall->getArg(NumArgs-1);

if (OrigArg->isTypeDependent())
  return false;

// This operation requires a non-_Complex floating-point number.
if (!OrigArg->getType()->isRealFloatingType())
  return Diag(OrigArg->getBeginLoc(),
              diag::err_typecheck_call_invalid_unary_fp)
         << OrigArg->getType() << OrigArg->getSourceRange();

// If this is an implicit conversion from float -> float, double, or
// long double, remove it.
if (ImplicitCastExpr *Cast = dyn_cast<ImplicitCastExpr>(OrigArg)) {
  // Only remove standard FloatCasts, leaving other casts inplace
  if (Cast->getCastKind() == CK_FloatingCast) {
    Expr *CastArg = Cast->getSubExpr();
    if (CastArg->getType()->isSpecificBuiltinType(BuiltinType::Float)) {
      assert((((Cast->getType()->isSpecificBuiltinType(BuiltinType::
Double) || Cast->getType()->isSpecificBuiltinType(BuiltinType
::Float) || Cast->getType()->isSpecificBuiltinType(BuiltinType
::LongDouble)) && "promotion from float to either float, double, or long double is "
 "the only expected cast here") ? static_cast<void> (0)
 : __assert_fail ("(Cast->getType()->isSpecificBuiltinType(BuiltinType::Double) || Cast->getType()->isSpecificBuiltinType(BuiltinType::Float) || Cast->getType()->isSpecificBuiltinType(BuiltinType::LongDouble)) && \"promotion from float to either float, double, or long double is \" \"the only expected cast here\""
, "/build/llvm-toolchain-snapshot-9~svn362543/tools/clang/lib/Sema/SemaChecking.cpp"
, 5674, __PRETTY_FUNCTION__))
          (Cast->getType()->isSpecificBuiltinType(BuiltinType::Double) ||(((Cast->getType()->isSpecificBuiltinType(BuiltinType::
Double) || Cast->getType()->isSpecificBuiltinType(BuiltinType
::Float) || Cast->getType()->isSpecificBuiltinType(BuiltinType
::LongDouble)) && "promotion from float to either float, double, or long double is "
 "the only expected cast here") ? static_cast<void> (0)
 : __assert_fail ("(Cast->getType()->isSpecificBuiltinType(BuiltinType::Double) || Cast->getType()->isSpecificBuiltinType(BuiltinType::Float) || Cast->getType()->isSpecificBuiltinType(BuiltinType::LongDouble)) && \"promotion from float to either float, double, or long double is \" \"the only expected cast here\""
, "/build/llvm-toolchain-snapshot-9~svn362543/tools/clang/lib/Sema/SemaChecking.cpp"
, 5674, __PRETTY_FUNCTION__))
           Cast->getType()->isSpecificBuiltinType(BuiltinType::Float) ||(((Cast->getType()->isSpecificBuiltinType(BuiltinType::
Double) || Cast->getType()->isSpecificBuiltinType(BuiltinType
::Float) || Cast->getType()->isSpecificBuiltinType(BuiltinType
::LongDouble)) && "promotion from float to either float, double, or long double is "
 "the only expected cast here") ? static_cast<void> (0)
 : __assert_fail ("(Cast->getType()->isSpecificBuiltinType(BuiltinType::Double) || Cast->getType()->isSpecificBuiltinType(BuiltinType::Float) || Cast->getType()->isSpecificBuiltinType(BuiltinType::LongDouble)) && \"promotion from float to either float, double, or long double is \" \"the only expected cast here\""
, "/build/llvm-toolchain-snapshot-9~svn362543/tools/clang/lib/Sema/SemaChecking.cpp"
, 5674, __PRETTY_FUNCTION__))
           Cast->getType()->isSpecificBuiltinType(BuiltinType::LongDouble)) &&(((Cast->getType()->isSpecificBuiltinType(BuiltinType::
Double) || Cast->getType()->isSpecificBuiltinType(BuiltinType
::Float) || Cast->getType()->isSpecificBuiltinType(BuiltinType
::LongDouble)) && "promotion from float to either float, double, or long double is "
 "the only expected cast here") ? static_cast<void> (0)
 : __assert_fail ("(Cast->getType()->isSpecificBuiltinType(BuiltinType::Double) || Cast->getType()->isSpecificBuiltinType(BuiltinType::Float) || Cast->getType()->isSpecificBuiltinType(BuiltinType::LongDouble)) && \"promotion from float to either float, double, or long double is \" \"the only expected cast here\""
, "/build/llvm-toolchain-snapshot-9~svn362543/tools/clang/lib/Sema/SemaChecking.cpp"
, 5674, __PRETTY_FUNCTION__))
          "promotion from float to either float, double, or long double is "(((Cast->getType()->isSpecificBuiltinType(BuiltinType::
Double) || Cast->getType()->isSpecificBuiltinType(BuiltinType
::Float) || Cast->getType()->isSpecificBuiltinType(BuiltinType
::LongDouble)) && "promotion from float to either float, double, or long double is "
 "the only expected cast here") ? static_cast<void> (0)
 : __assert_fail ("(Cast->getType()->isSpecificBuiltinType(BuiltinType::Double) || Cast->getType()->isSpecificBuiltinType(BuiltinType::Float) || Cast->getType()->isSpecificBuiltinType(BuiltinType::LongDouble)) && \"promotion from float to either float, double, or long double is \" \"the only expected cast here\""
, "/build/llvm-toolchain-snapshot-9~svn362543/tools/clang/lib/Sema/SemaChecking.cpp"
, 5674, __PRETTY_FUNCTION__))
          "the only expected cast here")(((Cast->getType()->isSpecificBuiltinType(BuiltinType::
Double) || Cast->getType()->isSpecificBuiltinType(BuiltinType
::Float) || Cast->getType()->isSpecificBuiltinType(BuiltinType
::LongDouble)) && "promotion from float to either float, double, or long double is "
 "the only expected cast here") ? static_cast<void> (0)
 : __assert_fail ("(Cast->getType()->isSpecificBuiltinType(BuiltinType::Double) || Cast->getType()->isSpecificBuiltinType(BuiltinType::Float) || Cast->getType()->isSpecificBuiltinType(BuiltinType::LongDouble)) && \"promotion from float to either float, double, or long double is \" \"the only expected cast here\""
, "/build/llvm-toolchain-snapshot-9~svn362543/tools/clang/lib/Sema/SemaChecking.cpp"
, 5674, __PRETTY_FUNCTION__));
      Cast->setSubExpr(nullptr);
      TheCall->setArg(NumArgs-1, CastArg);
    }
  }
}

return false;
5682}

5684// Customized Sema Checking for VSX builtins that have the following signature:
5685// vector [...] builtinName(vector [...], vector [...], const int);
5686// Which takes the same type of vectors (any legal vector type) for the first
5687// two arguments and takes compile time constant for the third argument.
5688// Example builtins are :
5689// vector double vec_xxpermdi(vector double, vector double, int);
5690// vector short vec_xxsldwi(vector short, vector short, int);
5691bool Sema::SemaBuiltinVSX(CallExpr *TheCall) {
unsigned ExpectedNumArgs = 3;
if (TheCall->getNumArgs() < ExpectedNumArgs)
  return Diag(TheCall->getEndLoc(),
              diag::err_typecheck_call_too_few_args_at_least)
         << 0 /*function call*/ << ExpectedNumArgs << TheCall->getNumArgs()
         << TheCall->getSourceRange();

if (TheCall->getNumArgs() > ExpectedNumArgs)
  return Diag(TheCall->getEndLoc(),
              diag::err_typecheck_call_too_many_args_at_most)
         << 0 /*function call*/ << ExpectedNumArgs << TheCall->getNumArgs()
         << TheCall->getSourceRange();

// Check the third argument is a compile time constant
llvm::APSInt Value;
if(!TheCall->getArg(2)->isIntegerConstantExpr(Value, Context))
  return Diag(TheCall->getBeginLoc(),
              diag::err_vsx_builtin_nonconstant_argument)
         << 3 /* argument index */ << TheCall->getDirectCallee()
         << SourceRange(TheCall->getArg(2)->getBeginLoc(),
                        TheCall->getArg(2)->getEndLoc());

QualType Arg1Ty = TheCall->getArg(0)->getType();
QualType Arg2Ty = TheCall->getArg(1)->getType();

// Check the type of argument 1 and argument 2 are vectors.
SourceLocation BuiltinLoc = TheCall->getBeginLoc();
if ((!Arg1Ty->isVectorType() && !Arg1Ty->isDependentType()) ||
    (!Arg2Ty->isVectorType() && !Arg2Ty->isDependentType())) {
  return Diag(BuiltinLoc, diag::err_vec_builtin_non_vector)
         << TheCall->getDirectCallee()
         << SourceRange(TheCall->getArg(0)->getBeginLoc(),
                        TheCall->getArg(1)->getEndLoc());
}

// Check the first two arguments are the same type.
if (!Context.hasSameUnqualifiedType(Arg1Ty, Arg2Ty)) {
  return Diag(BuiltinLoc, diag::err_vec_builtin_incompatible_vector)
         << TheCall->getDirectCallee()
         << SourceRange(TheCall->getArg(0)->getBeginLoc(),
                        TheCall->getArg(1)->getEndLoc());
}

// When default clang type checking is turned off and the customized type
// checking is used, the returning type of the function must be explicitly
// set. Otherwise it is _Bool by default.
TheCall->setType(Arg1Ty);

return false;
5741}

5743/// SemaBuiltinShuffleVector - Handle __builtin_shufflevector.
5744// This is declared to take (...), so we have to check everything.
5745ExprResult Sema::SemaBuiltinShuffleVector(CallExpr *TheCall) {
if (TheCall->getNumArgs() < 2)
  return ExprError(Diag(TheCall->getEndLoc(),
                        diag::err_typecheck_call_too_few_args_at_least)
                   << 0 /*function call*/ << 2 << TheCall->getNumArgs()
                   << TheCall->getSourceRange());

// Determine which of the following types of shufflevector we're checking:
// 1) unary, vector mask: (lhs, mask)
// 2) binary, scalar mask: (lhs, rhs, index, ..., index)
QualType resType = TheCall->getArg(0)->getType();
unsigned numElements = 0;

if (!TheCall->getArg(0)->isTypeDependent() &&
    !TheCall->getArg(1)->isTypeDependent()) {
  QualType LHSType = TheCall->getArg(0)->getType();
  QualType RHSType = TheCall->getArg(1)->getType();

  if (!LHSType->isVectorType() || !RHSType->isVectorType())
    return ExprError(
        Diag(TheCall->getBeginLoc(), diag::err_vec_builtin_non_vector)
        << TheCall->getDirectCallee()
        << SourceRange(TheCall->getArg(0)->getBeginLoc(),
                       TheCall->getArg(1)->getEndLoc()));

  numElements = LHSType->getAs<VectorType>()->getNumElements();
  unsigned numResElements = TheCall->getNumArgs() - 2;

  // Check to see if we have a call with 2 vector arguments, the unary shuffle
  // with mask.  If so, verify that RHS is an integer vector type with the
  // same number of elts as lhs.
  if (TheCall->getNumArgs() == 2) {
    if (!RHSType->hasIntegerRepresentation() ||
        RHSType->getAs<VectorType>()->getNumElements() != numElements)
      return ExprError(Diag(TheCall->getBeginLoc(),
                            diag::err_vec_builtin_incompatible_vector)
                       << TheCall->getDirectCallee()
                       << SourceRange(TheCall->getArg(1)->getBeginLoc(),
                                      TheCall->getArg(1)->getEndLoc()));
  } else if (!Context.hasSameUnqualifiedType(LHSType, RHSType)) {
    return ExprError(Diag(TheCall->getBeginLoc(),
                          diag::err_vec_builtin_incompatible_vector)
                     << TheCall->getDirectCallee()
                     << SourceRange(TheCall->getArg(0)->getBeginLoc(),
                                    TheCall->getArg(1)->getEndLoc()));
  } else if (numElements != numResElements) {
    QualType eltType = LHSType->getAs<VectorType>()->getElementType();
    resType = Context.getVectorType(eltType, numResElements,
                                    VectorType::GenericVector);
  }
}

for (unsigned i = 2; i < TheCall->getNumArgs(); i++) {
  if (TheCall->getArg(i)->isTypeDependent() ||
      TheCall->getArg(i)->isValueDependent())
    continue;

  llvm::APSInt Result(32);
  if (!TheCall->getArg(i)->isIntegerConstantExpr(Result, Context))
    return ExprError(Diag(TheCall->getBeginLoc(),
                          diag::err_shufflevector_nonconstant_argument)
                     << TheCall->getArg(i)->getSourceRange());

  // Allow -1 which will be translated to undef in the IR.
  if (Result.isSigned() && Result.isAllOnesValue())
    continue;

  if (Result.getActiveBits() > 64 || Result.getZExtValue() >= numElements*2)
    return ExprError(Diag(TheCall->getBeginLoc(),
                          diag::err_shufflevector_argument_too_large)
                     << TheCall->getArg(i)->getSourceRange());
}

SmallVector<Expr*, 32> exprs;

for (unsigned i = 0, e = TheCall->getNumArgs(); i != e; i++) {
  exprs.push_back(TheCall->getArg(i));
  TheCall->setArg(i, nullptr);
}

return new (Context) ShuffleVectorExpr(Context, exprs, resType,
                                       TheCall->getCallee()->getBeginLoc(),
                                       TheCall->getRParenLoc());
5828}

5830/// SemaConvertVectorExpr - Handle __builtin_convertvector
5831ExprResult Sema::SemaConvertVectorExpr(Expr *E, TypeSourceInfo *TInfo,
                                     SourceLocation BuiltinLoc,
                                     SourceLocation RParenLoc) {
ExprValueKind VK = VK_RValue;
ExprObjectKind OK = OK_Ordinary;
QualType DstTy = TInfo->getType();
QualType SrcTy = E->getType();

if (!SrcTy->isVectorType() && !SrcTy->isDependentType())
  return ExprError(Diag(BuiltinLoc,
                        diag::err_convertvector_non_vector)
                   << E->getSourceRange());
if (!DstTy->isVectorType() && !DstTy->isDependentType())
  return ExprError(Diag(BuiltinLoc,
                        diag::err_convertvector_non_vector_type));

if (!SrcTy->isDependentType() && !DstTy->isDependentType()) {
  unsigned SrcElts = SrcTy->getAs<VectorType>()->getNumElements();
  unsigned DstElts = DstTy->getAs<VectorType>()->getNumElements();
  if (SrcElts != DstElts)
    return ExprError(Diag(BuiltinLoc,
                          diag::err_convertvector_incompatible_vector)
                     << E->getSourceRange());
}

return new (Context)
    ConvertVectorExpr(E, TInfo, DstTy, VK, OK, BuiltinLoc, RParenLoc);
5858}

5860/// SemaBuiltinPrefetch - Handle __builtin_prefetch.
5861// This is declared to take (const void*, ...) and can take two
5862// optional constant int args.
5863bool Sema::SemaBuiltinPrefetch(CallExpr *TheCall) {
unsigned NumArgs = TheCall->getNumArgs();

if (NumArgs > 3)
  return Diag(TheCall->getEndLoc(),
              diag::err_typecheck_call_too_many_args_at_most)
         << 0 /*function call*/ << 3 << NumArgs << TheCall->getSourceRange();

// Argument 0 is checked for us and the remaining arguments must be
// constant integers.
for (unsigned i = 1; i != NumArgs; ++i)
  if (SemaBuiltinConstantArgRange(TheCall, i, 0, i == 1 ? 1 : 3))
    return true;

return false;
5878}

5880/// SemaBuiltinAssume - Handle __assume (MS Extension).
5881// __assume does not evaluate its arguments, and should warn if its argument
5882// has side effects.
5883bool Sema::SemaBuiltinAssume(CallExpr *TheCall) {
Expr *Arg = TheCall->getArg(0);
if (Arg->isInstantiationDependent()) return false;

if (Arg->HasSideEffects(Context))
  Diag(Arg->getBeginLoc(), diag::warn_assume_side_effects)
      << Arg->getSourceRange()
      << cast<FunctionDecl>(TheCall->getCalleeDecl())->getIdentifier();

return false;
5893}

5895/// Handle __builtin_alloca_with_align. This is declared
5896/// as (size_t, size_t) where the second size_t must be a power of 2 greater
5897/// than 8.
5898bool Sema::SemaBuiltinAllocaWithAlign(CallExpr *TheCall) {
// The alignment must be a constant integer.
Expr *Arg = TheCall->getArg(1);

// We can't check the value of a dependent argument.
if (!Arg->isTypeDependent() && !Arg->isValueDependent()) {
  if (const auto *UE =
          dyn_cast<UnaryExprOrTypeTraitExpr>(Arg->IgnoreParenImpCasts()))
    if (UE->getKind() == UETT_AlignOf ||
        UE->getKind() == UETT_PreferredAlignOf)
      Diag(TheCall->getBeginLoc(), diag::warn_alloca_align_alignof)
          << Arg->getSourceRange();

  llvm::APSInt Result = Arg->EvaluateKnownConstInt(Context);

  if (!Result.isPowerOf2())
    return Diag(TheCall->getBeginLoc(), diag::err_alignment_not_power_of_two)
           << Arg->getSourceRange();

  if (Result < Context.getCharWidth())
    return Diag(TheCall->getBeginLoc(), diag::err_alignment_too_small)
           << (unsigned)Context.getCharWidth() << Arg->getSourceRange();

  if (Result > std::numeric_limits<int32_t>::max())
    return Diag(TheCall->getBeginLoc(), diag::err_alignment_too_big)
           << std::numeric_limits<int32_t>::max() << Arg->getSourceRange();
}

return false;
5927}

5929/// Handle __builtin_assume_aligned. This is declared
5930/// as (const void*, size_t, ...) and can take one optional constant int arg.
5931bool Sema::SemaBuiltinAssumeAligned(CallExpr *TheCall) {
unsigned NumArgs = TheCall->getNumArgs();

if (NumArgs > 3)
  return Diag(TheCall->getEndLoc(),
              diag::err_typecheck_call_too_many_args_at_most)
         << 0 /*function call*/ << 3 << NumArgs << TheCall->getSourceRange();

// The alignment must be a constant integer.
Expr *Arg = TheCall->getArg(1);

// We can't check the value of a dependent argument.
if (!Arg->isTypeDependent() && !Arg->isValueDependent()) {
  llvm::APSInt Result;
  if (SemaBuiltinConstantArg(TheCall, 1, Result))
    return true;

  if (!Result.isPowerOf2())
    return Diag(TheCall->getBeginLoc(), diag::err_alignment_not_power_of_two)
           << Arg->getSourceRange();
}

if (NumArgs > 2) {
  ExprResult Arg(TheCall->getArg(2));
  InitializedEntity Entity = InitializedEntity::InitializeParameter(Context,
    Context.getSizeType(), false);
  Arg = PerformCopyInitialization(Entity, SourceLocation(), Arg);
  if (Arg.isInvalid()) return true;
  TheCall->setArg(2, Arg.get());
}

return false;
5963}

5965bool Sema::SemaBuiltinOSLogFormat(CallExpr *TheCall) {
unsigned BuiltinID =
    cast<FunctionDecl>(TheCall->getCalleeDecl())->getBuiltinID();
bool IsSizeCall = BuiltinID == Builtin::BI__builtin_os_log_format_buffer_size;

unsigned NumArgs = TheCall->getNumArgs();
unsigned NumRequiredArgs = IsSizeCall ? 1 : 2;
if (NumArgs < NumRequiredArgs) {
  return Diag(TheCall->getEndLoc(), diag::err_typecheck_call_too_few_args)
         << 0 /* function call */ << NumRequiredArgs << NumArgs
         << TheCall->getSourceRange();
}
if (NumArgs >= NumRequiredArgs + 0x100) {
  return Diag(TheCall->getEndLoc(),
              diag::err_typecheck_call_too_many_args_at_most)
         << 0 /* function call */ << (NumRequiredArgs + 0xff) << NumArgs
         << TheCall->getSourceRange();
}
unsigned i = 0;

// For formatting call, check buffer arg.
if (!IsSizeCall) {
  ExprResult Arg(TheCall->getArg(i));
  InitializedEntity Entity = InitializedEntity::InitializeParameter(
      Context, Context.VoidPtrTy, false);
  Arg = PerformCopyInitialization(Entity, SourceLocation(), Arg);
  if (Arg.isInvalid())
    return true;
  TheCall->setArg(i, Arg.get());
  i++;
}

// Check string literal arg.
unsigned FormatIdx = i;
{
  ExprResult Arg = CheckOSLogFormatStringArg(TheCall->getArg(i));
  if (Arg.isInvalid())
    return true;
  TheCall->setArg(i, Arg.get());
  i++;
}

// Make sure variadic args are scalar.
unsigned FirstDataArg = i;
while (i < NumArgs) {
  ExprResult Arg = DefaultVariadicArgumentPromotion(
      TheCall->getArg(i), VariadicFunction, nullptr);
  if (Arg.isInvalid())
    return true;
  CharUnits ArgSize = Context.getTypeSizeInChars(Arg.get()->getType());
  if (ArgSize.getQuantity() >= 0x100) {
    return Diag(Arg.get()->getEndLoc(), diag::err_os_log_argument_too_big)
           << i << (int)ArgSize.getQuantity() << 0xff
           << TheCall->getSourceRange();
  }
  TheCall->setArg(i, Arg.get());
  i++;
}

// Check formatting specifiers. NOTE: We're only doing this for the non-size
// call to avoid duplicate diagnostics.
if (!IsSizeCall) {
  llvm::SmallBitVector CheckedVarArgs(NumArgs, false);
  ArrayRef<const Expr *> Args(TheCall->getArgs(), TheCall->getNumArgs());
  bool Success = CheckFormatArguments(
      Args, /*HasVAListArg*/ false, FormatIdx, FirstDataArg, FST_OSLog,
      VariadicFunction, TheCall->getBeginLoc(), SourceRange(),
      CheckedVarArgs);
  if (!Success)
    return true;
}

if (IsSizeCall) {
  TheCall->setType(Context.getSizeType());
} else {
  TheCall->setType(Context.VoidPtrTy);
}
return false;
6043}

6045/// SemaBuiltinConstantArg - Handle a check if argument ArgNum of CallExpr
6046/// TheCall is a constant expression.
6047bool Sema::SemaBuiltinConstantArg(CallExpr *TheCall, int ArgNum,
                                llvm::APSInt &Result) {
Expr *Arg = TheCall->getArg(ArgNum);
DeclRefExpr *DRE =cast<DeclRefExpr>(TheCall->getCallee()->IgnoreParenCasts());
FunctionDecl *FDecl = cast<FunctionDecl>(DRE->getDecl());

if (Arg->isTypeDependent() || Arg->isValueDependent()) return false;

if (!Arg->isIntegerConstantExpr(Result, Context))
  return Diag(TheCall->getBeginLoc(), diag::err_constant_integer_arg_type)
         << FDecl->getDeclName() << Arg->getSourceRange();

return false;
6060}

6062/// SemaBuiltinConstantArgRange - Handle a check if argument ArgNum of CallExpr
6063/// TheCall is a constant expression in the range [Low, High].
6064bool Sema::SemaBuiltinConstantArgRange(CallExpr *TheCall, int ArgNum,
                                     int Low, int High, bool RangeIsError) {
llvm::APSInt Result;

// We can't check the value of a dependent argument.
Expr *Arg = TheCall->getArg(ArgNum);
if (Arg->isTypeDependent() || Arg->isValueDependent())
  return false;

// Check constant-ness first.
if (SemaBuiltinConstantArg(TheCall, ArgNum, Result))
  return true;

if (Result.getSExtValue() < Low || Result.getSExtValue() > High) {
  if (RangeIsError)
    return Diag(TheCall->getBeginLoc(), diag::err_argument_invalid_range)
           << Result.toString(10) << Low << High << Arg->getSourceRange();
  else
    // Defer the warning until we know if the code will be emitted so that
    // dead code can ignore this.
    DiagRuntimeBehavior(TheCall->getBeginLoc(), TheCall,
                        PDiag(diag::warn_argument_invalid_range)
                            << Result.toString(10) << Low << High
                            << Arg->getSourceRange());
}

return false;
6091}

6093/// SemaBuiltinConstantArgMultiple - Handle a check if argument ArgNum of CallExpr
6094/// TheCall is a constant expression is a multiple of Num..
6095bool Sema::SemaBuiltinConstantArgMultiple(CallExpr *TheCall, int ArgNum,
                                        unsigned Num) {
llvm::APSInt Result;

// We can't check the value of a dependent argument.
Expr *Arg = TheCall->getArg(ArgNum);
if (Arg->isTypeDependent() || Arg->isValueDependent())
  return false;

// Check constant-ness first.
if (SemaBuiltinConstantArg(TheCall, ArgNum, Result))
  return true;

if (Result.getSExtValue() % Num != 0)
  return Diag(TheCall->getBeginLoc(), diag::err_argument_not_multiple)
         << Num << Arg->getSourceRange();

return false;
6113}

6115/// SemaBuiltinARMMemoryTaggingCall - Handle calls of memory tagging extensions
6116bool Sema::SemaBuiltinARMMemoryTaggingCall(unsigned BuiltinID, CallExpr *TheCall) {
if (BuiltinID == AArch64::BI__builtin_arm_irg) {
  if (checkArgCount(*this, TheCall, 2))
    return true;
  Expr *Arg0 = TheCall->getArg(0);
  Expr *Arg1 = TheCall->getArg(1);

  ExprResult FirstArg = DefaultFunctionArrayLvalueConversion(Arg0);
  if (FirstArg.isInvalid())
    return true;
  QualType FirstArgType = FirstArg.get()->getType();
  if (!FirstArgType->isAnyPointerType())
    return Diag(TheCall->getBeginLoc(), diag::err_memtag_arg_must_be_pointer)
             << "first" << FirstArgType << Arg0->getSourceRange();
  TheCall->setArg(0, FirstArg.get());

  ExprResult SecArg = DefaultLvalueConversion(Arg1);
  if (SecArg.isInvalid())
    return true;
  QualType SecArgType = SecArg.get()->getType();
  if (!SecArgType->isIntegerType())
    return Diag(TheCall->getBeginLoc(), diag::err_memtag_arg_must_be_integer)
             << "second" << SecArgType << Arg1->getSourceRange();

  // Derive the return type from the pointer argument.
  TheCall->setType(FirstArgType);
  return false;
}

if (BuiltinID == AArch64::BI__builtin_arm_addg) {
  if (checkArgCount(*this, TheCall, 2))
    return true;

  Expr *Arg0 = TheCall->getArg(0);
  ExprResult FirstArg = DefaultFunctionArrayLvalueConversion(Arg0);
  if (FirstArg.isInvalid())
    return true;
  QualType FirstArgType = FirstArg.get()->getType();
  if (!FirstArgType->isAnyPointerType())
    return Diag(TheCall->getBeginLoc(), diag::err_memtag_arg_must_be_pointer)
             << "first" << FirstArgType << Arg0->getSourceRange();
  TheCall->setArg(0, FirstArg.get());

  // Derive the return type from the pointer argument.
  TheCall->setType(FirstArgType);

  // Second arg must be an constant in range [0,15]
  return SemaBuiltinConstantArgRange(TheCall, 1, 0, 15);
}

if (BuiltinID == AArch64::BI__builtin_arm_gmi) {
  if (checkArgCount(*this, TheCall, 2))
    return true;
  Expr *Arg0 = TheCall->getArg(0);
  Expr *Arg1 = TheCall->getArg(1);

  ExprResult FirstArg = DefaultFunctionArrayLvalueConversion(Arg0);
  if (FirstArg.isInvalid())
    return true;
  QualType FirstArgType = FirstArg.get()->getType();
  if (!FirstArgType->isAnyPointerType())
    return Diag(TheCall->getBeginLoc(), diag::err_memtag_arg_must_be_pointer)
             << "first" << FirstArgType << Arg0->getSourceRange();

  QualType SecArgType = Arg1->getType();
  if (!SecArgType->isIntegerType())
    return Diag(TheCall->getBeginLoc(), diag::err_memtag_arg_must_be_integer)
             << "second" << SecArgType << Arg1->getSourceRange();
  TheCall->setType(Context.IntTy);
  return false;
}

if (BuiltinID == AArch64::BI__builtin_arm_ldg ||
    BuiltinID == AArch64::BI__builtin_arm_stg) {
  if (checkArgCount(*this, TheCall, 1))
    return true;
  Expr *Arg0 = TheCall->getArg(0);
  ExprResult FirstArg = DefaultFunctionArrayLvalueConversion(Arg0);
  if (FirstArg.isInvalid())
    return true;

  QualType FirstArgType = FirstArg.get()->getType();
  if (!FirstArgType->isAnyPointerType())
    return Diag(TheCall->getBeginLoc(), diag::err_memtag_arg_must_be_pointer)
             << "first" << FirstArgType << Arg0->getSourceRange();
  TheCall->setArg(0, FirstArg.get());

  // Derive the return type from the pointer argument.
  if (BuiltinID == AArch64::BI__builtin_arm_ldg)
    TheCall->setType(FirstArgType);
  return false;
}

if (BuiltinID == AArch64::BI__builtin_arm_subp) {
  Expr *ArgA = TheCall->getArg(0);
  Expr *ArgB = TheCall->getArg(1);

  ExprResult ArgExprA = DefaultFunctionArrayLvalueConversion(ArgA);
  ExprResult ArgExprB = DefaultFunctionArrayLvalueConversion(ArgB);

  if (ArgExprA.isInvalid() || ArgExprB.isInvalid())
    return true;

  QualType ArgTypeA = ArgExprA.get()->getType();
  QualType ArgTypeB = ArgExprB.get()->getType();

  auto isNull = [&] (Expr *E) -> bool {
    return E->isNullPointerConstant(
                      Context, Expr::NPC_ValueDependentIsNotNull); };

  // argument should be either a pointer or null
  if (!ArgTypeA->isAnyPointerType() && !isNull(ArgA))
    return Diag(TheCall->getBeginLoc(), diag::err_memtag_arg_null_or_pointer)
      << "first" << ArgTypeA << ArgA->getSourceRange();

  if (!ArgTypeB->isAnyPointerType() && !isNull(ArgB))
    return Diag(TheCall->getBeginLoc(), diag::err_memtag_arg_null_or_pointer)
      << "second" << ArgTypeB << ArgB->getSourceRange();

  // Ensure Pointee types are compatible
  if (ArgTypeA->isAnyPointerType() && !isNull(ArgA) &&
      ArgTypeB->isAnyPointerType() && !isNull(ArgB)) {
    QualType pointeeA = ArgTypeA->getPointeeType();
    QualType pointeeB = ArgTypeB->getPointeeType();
    if (!Context.typesAreCompatible(
           Context.getCanonicalType(pointeeA).getUnqualifiedType(),
           Context.getCanonicalType(pointeeB).getUnqualifiedType())) {
      return Diag(TheCall->getBeginLoc(), diag::err_typecheck_sub_ptr_compatible)
        << ArgTypeA <<  ArgTypeB << ArgA->getSourceRange()
        << ArgB->getSourceRange();
    }
  }

  // at least one argument should be pointer type
  if (!ArgTypeA->isAnyPointerType() && !ArgTypeB->isAnyPointerType())
    return Diag(TheCall->getBeginLoc(), diag::err_memtag_any2arg_pointer)
      <<  ArgTypeA << ArgTypeB << ArgA->getSourceRange();

  if (isNull(ArgA)) // adopt type of the other pointer
    ArgExprA = ImpCastExprToType(ArgExprA.get(), ArgTypeB, CK_NullToPointer);

  if (isNull(ArgB))
    ArgExprB = ImpCastExprToType(ArgExprB.get(), ArgTypeA, CK_NullToPointer);

  TheCall->setArg(0, ArgExprA.get());
  TheCall->setArg(1, ArgExprB.get());
  TheCall->setType(Context.LongLongTy);
  return false;
}
assert(false && "Unhandled ARM MTE intrinsic")((false && "Unhandled ARM MTE intrinsic") ? static_cast
<void> (0) : __assert_fail ("false && \"Unhandled ARM MTE intrinsic\""
, "/build/llvm-toolchain-snapshot-9~svn362543/tools/clang/lib/Sema/SemaChecking.cpp"
, 6265, __PRETTY_FUNCTION__));
return true;
6267}

6269/// SemaBuiltinARMSpecialReg - Handle a check if argument ArgNum of CallExpr
6270/// TheCall is an ARM/AArch64 special register string literal.
6271bool Sema::SemaBuiltinARMSpecialReg(unsigned BuiltinID, CallExpr *TheCall,
                                  int ArgNum, unsigned ExpectedFieldNum,
                                  bool AllowName) {
bool IsARMBuiltin = BuiltinID == ARM::BI__builtin_arm_rsr64 ||
                    BuiltinID == ARM::BI__builtin_arm_wsr64 ||
                    BuiltinID == ARM::BI__builtin_arm_rsr ||
                    BuiltinID == ARM::BI__builtin_arm_rsrp ||
                    BuiltinID == ARM::BI__builtin_arm_wsr ||
                    BuiltinID == ARM::BI__builtin_arm_wsrp;
bool IsAArch64Builtin = BuiltinID == AArch64::BI__builtin_arm_rsr64 ||
                        BuiltinID == AArch64::BI__builtin_arm_wsr64 ||
                        BuiltinID == AArch64::BI__builtin_arm_rsr ||
                        BuiltinID == AArch64::BI__builtin_arm_rsrp ||
                        BuiltinID == AArch64::BI__builtin_arm_wsr ||
                        BuiltinID == AArch64::BI__builtin_arm_wsrp;
assert((IsARMBuiltin || IsAArch64Builtin) && "Unexpected ARM builtin.")(((IsARMBuiltin || IsAArch64Builtin) && "Unexpected ARM builtin."
) ? static_cast<void> (0) : __assert_fail ("(IsARMBuiltin || IsAArch64Builtin) && \"Unexpected ARM builtin.\""
, "/build/llvm-toolchain-snapshot-9~svn362543/tools/clang/lib/Sema/SemaChecking.cpp"
, 6286, __PRETTY_FUNCTION__));

// We can't check the value of a dependent argument.
Expr *Arg = TheCall->getArg(ArgNum);
if (Arg->isTypeDependent() || Arg->isValueDependent())
  return false;

// Check if the argument is a string literal.
if (!isa<StringLiteral>(Arg->IgnoreParenImpCasts()))
  return Diag(TheCall->getBeginLoc(), diag::err_expr_not_string_literal)
         << Arg->getSourceRange();

// Check the type of special register given.
StringRef Reg = cast<StringLiteral>(Arg->IgnoreParenImpCasts())->getString();
SmallVector<StringRef, 6> Fields;
Reg.split(Fields, ":");

if (Fields.size() != ExpectedFieldNum && !(AllowName && Fields.size() == 1))
  return Diag(TheCall->getBeginLoc(), diag::err_arm_invalid_specialreg)
         << Arg->getSourceRange();

// If the string is the name of a register then we cannot check that it is
// valid here but if the string is of one the forms described in ACLE then we
// can check that the supplied fields are integers and within the valid
// ranges.
if (Fields.size() > 1) {
  bool FiveFields = Fields.size() == 5;

  bool ValidString = true;
  if (IsARMBuiltin) {
    ValidString &= Fields[0].startswith_lower("cp") ||
                   Fields[0].startswith_lower("p");
    if (ValidString)
      Fields[0] =
        Fields[0].drop_front(Fields[0].startswith_lower("cp") ? 2 : 1);

    ValidString &= Fields[2].startswith_lower("c");
    if (ValidString)
      Fields[2] = Fields[2].drop_front(1);

    if (FiveFields) {
      ValidString &= Fields[3].startswith_lower("c");
      if (ValidString)
        Fields[3] = Fields[3].drop_front(1);
    }
  }

  SmallVector<int, 5> Ranges;
  if (FiveFields)
    Ranges.append({IsAArch64Builtin ? 1 : 15, 7, 15, 15, 7});
  else
    Ranges.append({15, 7, 15});

  for (unsigned i=0; i<Fields.size(); ++i) {
    int IntField;
    ValidString &= !Fields[i].getAsInteger(10, IntField);
    ValidString &= (IntField >= 0 && IntField <= Ranges[i]);
  }

  if (!ValidString)
    return Diag(TheCall->getBeginLoc(), diag::err_arm_invalid_specialreg)
           << Arg->getSourceRange();
} else if (IsAArch64Builtin && Fields.size() == 1) {
  // If the register name is one of those that appear in the condition below
  // and the special register builtin being used is one of the write builtins,
  // then we require that the argument provided for writing to the register
  // is an integer constant expression. This is because it will be lowered to
  // an MSR (immediate) instruction, so we need to know the immediate at
  // compile time.
  if (TheCall->getNumArgs() != 2)
    return false;

  std::string RegLower = Reg.lower();
  if (RegLower != "spsel" && RegLower != "daifset" && RegLower != "daifclr" &&
      RegLower != "pan" && RegLower != "uao")
    return false;

  return SemaBuiltinConstantArgRange(TheCall, 1, 0, 15);
}

return false;
6367}

6369/// SemaBuiltinLongjmp - Handle __builtin_longjmp(void *env[5], int val).
6370/// This checks that the target supports __builtin_longjmp and
6371/// that val is a constant 1.
6372bool Sema::SemaBuiltinLongjmp(CallExpr *TheCall) {
if (!Context.getTargetInfo().hasSjLjLowering())
  return Diag(TheCall->getBeginLoc(), diag::err_builtin_longjmp_unsupported)
         << SourceRange(TheCall->getBeginLoc(), TheCall->getEndLoc());

Expr *Arg = TheCall->getArg(1);
llvm::APSInt Result;

// TODO: This is less than ideal. Overload this to take a value.
if (SemaBuiltinConstantArg(TheCall, 1, Result))
  return true;

if (Result != 1)
  return Diag(TheCall->getBeginLoc(), diag::err_builtin_longjmp_invalid_val)
         << SourceRange(Arg->getBeginLoc(), Arg->getEndLoc());

return false;
6389}

6391/// SemaBuiltinSetjmp - Handle __builtin_setjmp(void *env[5]).
6392/// This checks that the target supports __builtin_setjmp.
6393bool Sema::SemaBuiltinSetjmp(CallExpr *TheCall) {
if (!Context.getTargetInfo().hasSjLjLowering())
  return Diag(TheCall->getBeginLoc(), diag::err_builtin_setjmp_unsupported)
         << SourceRange(TheCall->getBeginLoc(), TheCall->getEndLoc());
return false;
6398}

6400namespace {

6402class UncoveredArgHandler {
enum { Unknown = -1, AllCovered = -2 };

signed FirstUncoveredArg = Unknown;
SmallVector<const Expr *, 4> DiagnosticExprs;

6408public:
UncoveredArgHandler() = default;

bool hasUncoveredArg() const {
  return (FirstUncoveredArg >= 0);
}

unsigned getUncoveredArg() const {
  assert(hasUncoveredArg() && "no uncovered argument")((hasUncoveredArg() && "no uncovered argument") ? static_cast
<void> (0) : __assert_fail ("hasUncoveredArg() && \"no uncovered argument\""
, "/build/llvm-toolchain-snapshot-9~svn362543/tools/clang/lib/Sema/SemaChecking.cpp"
, 6416, __PRETTY_FUNCTION__));
  return FirstUncoveredArg;
}

void setAllCovered() {
  // A string has been found with all arguments covered, so clear out
  // the diagnostics.
  DiagnosticExprs.clear();
  FirstUncoveredArg = AllCovered;
}

void Update(signed NewFirstUncoveredArg, const Expr *StrExpr) {
  assert(NewFirstUncoveredArg >= 0 && "Outside range")((NewFirstUncoveredArg >= 0 && "Outside range") ? static_cast
<void> (0) : __assert_fail ("NewFirstUncoveredArg >= 0 && \"Outside range\""
, "/build/llvm-toolchain-snapshot-9~svn362543/tools/clang/lib/Sema/SemaChecking.cpp"
, 6428, __PRETTY_FUNCTION__));

  // Don't update if a previous string covers all arguments.
  if (FirstUncoveredArg == AllCovered)
    return;

  // UncoveredArgHandler tracks the highest uncovered argument index
  // and with it all the strings that match this index.
  if (NewFirstUncoveredArg == FirstUncoveredArg)
    DiagnosticExprs.push_back(StrExpr);
  else if (NewFirstUncoveredArg > FirstUncoveredArg) {
    DiagnosticExprs.clear();
    DiagnosticExprs.push_back(StrExpr);
    FirstUncoveredArg = NewFirstUncoveredArg;
  }
}

void Diagnose(Sema &S, bool IsFunctionCall, const Expr *ArgExpr);
6446};

6448enum StringLiteralCheckType {
SLCT_NotALiteral,
SLCT_UncheckedLiteral,
SLCT_CheckedLiteral
6452};

6454} // namespace

6456static void sumOffsets(llvm::APSInt &Offset, llvm::APSInt Addend,
                                   BinaryOperatorKind BinOpKind,
                                   bool AddendIsRight) {
unsigned BitWidth = Offset.getBitWidth();
unsigned AddendBitWidth = Addend.getBitWidth();
// There might be negative interim results.
if (Addend.isUnsigned()) {
  Addend = Addend.zext(++AddendBitWidth);
  Addend.setIsSigned(true);
}
// Adjust the bit width of the APSInts.
if (AddendBitWidth > BitWidth) {
  Offset = Offset.sext(AddendBitWidth);
  BitWidth = AddendBitWidth;
} else if (BitWidth > AddendBitWidth) {
  Addend = Addend.sext(BitWidth);
}

bool Ov = false;
llvm::APSInt ResOffset = Offset;
if (BinOpKind == BO_Add)
  ResOffset = Offset.sadd_ov(Addend, Ov);
else {
  assert(AddendIsRight && BinOpKind == BO_Sub &&((AddendIsRight && BinOpKind == BO_Sub && "operator must be add or sub with addend on the right"
) ? static_cast<void> (0) : __assert_fail ("AddendIsRight && BinOpKind == BO_Sub && \"operator must be add or sub with addend on the right\""
, "/build/llvm-toolchain-snapshot-9~svn362543/tools/clang/lib/Sema/SemaChecking.cpp"
, 6480, __PRETTY_FUNCTION__))
         "operator must be add or sub with addend on the right")((AddendIsRight && BinOpKind == BO_Sub && "operator must be add or sub with addend on the right"
) ? static_cast<void> (0) : __assert_fail ("AddendIsRight && BinOpKind == BO_Sub && \"operator must be add or sub with addend on the right\""
, "/build/llvm-toolchain-snapshot-9~svn362543/tools/clang/lib/Sema/SemaChecking.cpp"
, 6480, __PRETTY_FUNCTION__));
  ResOffset = Offset.ssub_ov(Addend, Ov);
}

// We add an offset to a pointer here so we should support an offset as big as
// possible.
if (Ov) {
  assert(BitWidth <= std::numeric_limits<unsigned>::max() / 2 &&((BitWidth <= std::numeric_limits<unsigned>::max() /
&& "index (intermediate) result too big") ? static_cast
<void> (0) : __assert_fail ("BitWidth <= std::numeric_limits<unsigned>::max() / 2 && \"index (intermediate) result too big\""
, "/build/llvm-toolchain-snapshot-9~svn362543/tools/clang/lib/Sema/SemaChecking.cpp"
, 6488, __PRETTY_FUNCTION__))
         "index (intermediate) result too big")((BitWidth <= std::numeric_limits<unsigned>::max() /
&& "index (intermediate) result too big") ? static_cast
<void> (0) : __assert_fail ("BitWidth <= std::numeric_limits<unsigned>::max() / 2 && \"index (intermediate) result too big\""
, "/build/llvm-toolchain-snapshot-9~svn362543/tools/clang/lib/Sema/SemaChecking.cpp"
, 6488, __PRETTY_FUNCTION__));
  Offset = Offset.sext(2 * BitWidth);
  sumOffsets(Offset, Addend, BinOpKind, AddendIsRight);
  return;
}

Offset = ResOffset;
6495}

6497namespace {

6499// This is a wrapper class around StringLiteral to support offsetted string
6500// literals as format strings. It takes the offset into account when returning
6501// the string and its length or the source locations to display notes correctly.
6502class FormatStringLiteral {
const StringLiteral *FExpr;
int64_t Offset;

public:
FormatStringLiteral(const StringLiteral *fexpr, int64_t Offset = 0)
    : FExpr(fexpr), Offset(Offset) {}

StringRef getString() const {
  return FExpr->getString().drop_front(Offset);
}

unsigned getByteLength() const {
  return FExpr->getByteLength() - getCharByteWidth() * Offset;
}

unsigned getLength() const { return FExpr->getLength() - Offset; }
unsigned getCharByteWidth() const { return FExpr->getCharByteWidth(); }

StringLiteral::StringKind getKind() const { return FExpr->getKind(); }

QualType getType() const { return FExpr->getType(); }

bool isAscii() const { return FExpr->isAscii(); }
bool isWide() const { return FExpr->isWide(); }
bool isUTF8() const { return FExpr->isUTF8(); }
bool isUTF16() const { return FExpr->isUTF16(); }
bool isUTF32() const { return FExpr->isUTF32(); }
bool isPascal() const { return FExpr->isPascal(); }

SourceLocation getLocationOfByte(
    unsigned ByteNo, const SourceManager &SM, const LangOptions &Features,
    const TargetInfo &Target, unsigned *StartToken = nullptr,
    unsigned *StartTokenByteOffset = nullptr) const {
  return FExpr->getLocationOfByte(ByteNo + Offset, SM, Features, Target,
                                  StartToken, StartTokenByteOffset);
}

SourceLocation getBeginLoc() const LLVM_READONLY__attribute__((__pure__)) {
  return FExpr->getBeginLoc().getLocWithOffset(Offset);
}

SourceLocation getEndLoc() const LLVM_READONLY__attribute__((__pure__)) { return FExpr->getEndLoc(); }
6545};

6547}  // namespace

6549static void CheckFormatString(Sema &S, const FormatStringLiteral *FExpr,
                            const Expr *OrigFormatExpr,
                            ArrayRef<const Expr *> Args,
                            bool HasVAListArg, unsigned format_idx,
                            unsigned firstDataArg,
                            Sema::FormatStringType Type,
                            bool inFunctionCall,
                            Sema::VariadicCallType CallType,
                            llvm::SmallBitVector &CheckedVarArgs,
                            UncoveredArgHandler &UncoveredArg);

6560// Determine if an expression is a string literal or constant string.
6561// If this function returns false on the arguments to a function expecting a
6562// format string, we will usually need to emit a warning.
6563// True string literals are then checked by CheckFormatString.
6564static StringLiteralCheckType
6565checkFormatStringExpr(Sema &S, const Expr *E, ArrayRef<const Expr *> Args,
                    bool HasVAListArg, unsigned format_idx,
                    unsigned firstDataArg, Sema::FormatStringType Type,
                    Sema::VariadicCallType CallType, bool InFunctionCall,
                    llvm::SmallBitVector &CheckedVarArgs,
                    UncoveredArgHandler &UncoveredArg,
                    llvm::APSInt Offset) {
tryAgain:
assert(Offset.isSigned() && "invalid offset")((Offset.isSigned() && "invalid offset") ? static_cast
<void> (0) : __assert_fail ("Offset.isSigned() && \"invalid offset\""
, "/build/llvm-toolchain-snapshot-9~svn362543/tools/clang/lib/Sema/SemaChecking.cpp"
, 6573, __PRETTY_FUNCTION__));

if (E->isTypeDependent() || E->isValueDependent())
  return SLCT_NotALiteral;

E = E->IgnoreParenCasts();

if (E->isNullPointerConstant(S.Context, Expr::NPC_ValueDependentIsNotNull))
  // Technically -Wformat-nonliteral does not warn about this case.
  // The behavior of printf and friends in this case is implementation
  // dependent.  Ideally if the format string cannot be null then
  // it should have a 'nonnull' attribute in the function prototype.
  return SLCT_UncheckedLiteral;

switch (E->getStmtClass()) {
case Stmt::BinaryConditionalOperatorClass:
case Stmt::ConditionalOperatorClass: {
  // The expression is a literal if both sub-expressions were, and it was
  // completely checked only if both sub-expressions were checked.
  const AbstractConditionalOperator *C =
      cast<AbstractConditionalOperator>(E);

  // Determine whether it is necessary to check both sub-expressions, for
  // example, because the condition expression is a constant that can be
  // evaluated at compile time.
  bool CheckLeft = true, CheckRight = true;

  bool Cond;
  if (C->getCond()->EvaluateAsBooleanCondition(Cond, S.getASTContext())) {
    if (Cond)
      CheckRight = false;
    else
      CheckLeft = false;
  }

  // We need to maintain the offsets for the right and the left hand side
  // separately to check if every possible indexed expression is a valid
  // string literal. They might have different offsets for different string
  // literals in the end.
  StringLiteralCheckType Left;
  if (!CheckLeft)
    Left = SLCT_UncheckedLiteral;
  else {
    Left = checkFormatStringExpr(S, C->getTrueExpr(), Args,
                                 HasVAListArg, format_idx, firstDataArg,
                                 Type, CallType, InFunctionCall,
                                 CheckedVarArgs, UncoveredArg, Offset);
    if (Left == SLCT_NotALiteral || !CheckRight) {
      return Left;
    }
  }

  StringLiteralCheckType Right =
      checkFormatStringExpr(S, C->getFalseExpr(), Args,
                            HasVAListArg, format_idx, firstDataArg,
                            Type, CallType, InFunctionCall, CheckedVarArgs,
                            UncoveredArg, Offset);

  return (CheckLeft && Left < Right) ? Left : Right;
}

case Stmt::ImplicitCastExprClass:
  E = cast<ImplicitCastExpr>(E)->getSubExpr();
  goto tryAgain;

case Stmt::OpaqueValueExprClass:
  if (const Expr *src = cast<OpaqueValueExpr>(E)->getSourceExpr()) {
    E = src;
    goto tryAgain;
  }
  return SLCT_NotALiteral;

case Stmt::PredefinedExprClass:
  // While __func__, etc., are technically not string literals, they
  // cannot contain format specifiers and thus are not a security
  // liability.
  return SLCT_UncheckedLiteral;

case Stmt::DeclRefExprClass: {
  const DeclRefExpr *DR = cast<DeclRefExpr>(E);

  // As an exception, do not flag errors for variables binding to
  // const string literals.
  if (const VarDecl *VD = dyn_cast<VarDecl>(DR->getDecl())) {
    bool isConstant = false;
    QualType T = DR->getType();

    if (const ArrayType *AT = S.Context.getAsArrayType(T)) {
      isConstant = AT->getElementType().isConstant(S.Context);
    } else if (const PointerType *PT = T->getAs<PointerType>()) {
      isConstant = T.isConstant(S.Context) &&
                   PT->getPointeeType().isConstant(S.Context);
    } else if (T->isObjCObjectPointerType()) {
      // In ObjC, there is usually no "const ObjectPointer" type,
      // so don't check if the pointee type is constant.
      isConstant = T.isConstant(S.Context);
    }

    if (isConstant) {
      if (const Expr *Init = VD->getAnyInitializer()) {
        // Look through initializers like const char c[] = { "foo" }
        if (const InitListExpr *InitList = dyn_cast<InitListExpr>(Init)) {
          if (InitList->isStringLiteralInit())
            Init = InitList->getInit(0)->IgnoreParenImpCasts();
        }
        return checkFormatStringExpr(S, Init, Args,
                                     HasVAListArg, format_idx,
                                     firstDataArg, Type, CallType,
                                     /*InFunctionCall*/ false, CheckedVarArgs,
                                     UncoveredArg, Offset);
      }
    }

    // For vprintf* functions (i.e., HasVAListArg==true), we add a
    // special check to see if the format string is a function parameter
    // of the function calling the printf function.  If the function
    // has an attribute indicating it is a printf-like function, then we
    // should suppress warnings concerning non-literals being used in a call
    // to a vprintf function.  For example:
    //
    // void
    // logmessage(char const *fmt __attribute__ (format (printf, 1, 2)), ...){
    //      va_list ap;
    //      va_start(ap, fmt);
    //      vprintf(fmt, ap);  // Do NOT emit a warning about "fmt".
    //      ...
    // }
    if (HasVAListArg) {
      if (const ParmVarDecl *PV = dyn_cast<ParmVarDecl>(VD)) {
        if (const NamedDecl *ND = dyn_cast<NamedDecl>(PV->getDeclContext())) {
          int PVIndex = PV->getFunctionScopeIndex() + 1;
          for (const auto *PVFormat : ND->specific_attrs<FormatAttr>()) {
            // adjust for implicit parameter
            if (const CXXMethodDecl *MD = dyn_cast<CXXMethodDecl>(ND))
              if (MD->isInstance())
                ++PVIndex;
            // We also check if the formats are compatible.
            // We can't pass a 'scanf' string to a 'printf' function.
            if (PVIndex == PVFormat->getFormatIdx() &&
                Type == S.GetFormatStringType(PVFormat))
              return SLCT_UncheckedLiteral;
          }
        }
      }
    }
  }

  return SLCT_NotALiteral;
}

case Stmt::CallExprClass:
case Stmt::CXXMemberCallExprClass: {
  const CallExpr *CE = cast<CallExpr>(E);
  if (const NamedDecl *ND = dyn_cast_or_null<NamedDecl>(CE->getCalleeDecl())) {
    bool IsFirst = true;
    StringLiteralCheckType CommonResult;
    for (const auto *FA : ND->specific_attrs<FormatArgAttr>()) {
      const Expr *Arg = CE->getArg(FA->getFormatIdx().getASTIndex());
      StringLiteralCheckType Result = checkFormatStringExpr(
          S, Arg, Args, HasVAListArg, format_idx, firstDataArg, Type,
          CallType, InFunctionCall, CheckedVarArgs, UncoveredArg, Offset);
      if (IsFirst) {
        CommonResult = Result;
        IsFirst = false;
      }
    }
    if (!IsFirst)
      return CommonResult;

    if (const auto *FD = dyn_cast<FunctionDecl>(ND)) {
      unsigned BuiltinID = FD->getBuiltinID();
      if (BuiltinID == Builtin::BI__builtin___CFStringMakeConstantString ||
          BuiltinID == Builtin::BI__builtin___NSStringMakeConstantString) {
        const Expr *Arg = CE->getArg(0);
        return checkFormatStringExpr(S, Arg, Args,
                                     HasVAListArg, format_idx,
                                     firstDataArg, Type, CallType,
                                     InFunctionCall, CheckedVarArgs,
                                     UncoveredArg, Offset);
      }
    }
  }

  return SLCT_NotALiteral;
}
case Stmt::ObjCMessageExprClass: {
  const auto *ME = cast<ObjCMessageExpr>(E);
  if (const auto *ND = ME->getMethodDecl()) {
    if (const auto *FA = ND->getAttr<FormatArgAttr>()) {
      const Expr *Arg = ME->getArg(FA->getFormatIdx().getASTIndex());
      return checkFormatStringExpr(
          S, Arg, Args, HasVAListArg, format_idx, firstDataArg, Type,
          CallType, InFunctionCall, CheckedVarArgs, UncoveredArg, Offset);
    }
  }

  return SLCT_NotALiteral;
}
case Stmt::ObjCStringLiteralClass:
case Stmt::StringLiteralClass: {
  const StringLiteral *StrE = nullptr;

  if (const ObjCStringLiteral *ObjCFExpr = dyn_cast<ObjCStringLiteral>(E))
    StrE = ObjCFExpr->getString();
  else
    StrE = cast<StringLiteral>(E);

  if (StrE) {
    if (Offset.isNegative() || Offset > StrE->getLength()) {
      // TODO: It would be better to have an explicit warning for out of
      // bounds literals.
      return SLCT_NotALiteral;
    }
    FormatStringLiteral FStr(StrE, Offset.sextOrTrunc(64).getSExtValue());
    CheckFormatString(S, &FStr, E, Args, HasVAListArg, format_idx,
                      firstDataArg, Type, InFunctionCall, CallType,
                      CheckedVarArgs, UncoveredArg);
    return SLCT_CheckedLiteral;
  }

  return SLCT_NotALiteral;
}
case Stmt::BinaryOperatorClass: {
  const BinaryOperator *BinOp = cast<BinaryOperator>(E);

  // A string literal + an int offset is still a string literal.
  if (BinOp->isAdditiveOp()) {
    Expr::EvalResult LResult, RResult;

    bool LIsInt = BinOp->getLHS()->EvaluateAsInt(LResult, S.Context);
    bool RIsInt = BinOp->getRHS()->EvaluateAsInt(RResult, S.Context);

    if (LIsInt != RIsInt) {
      BinaryOperatorKind BinOpKind = BinOp->getOpcode();

      if (LIsInt) {
        if (BinOpKind == BO_Add) {
          sumOffsets(Offset, LResult.Val.getInt(), BinOpKind, RIsInt);
          E = BinOp->getRHS();
          goto tryAgain;
        }
      } else {
        sumOffsets(Offset, RResult.Val.getInt(), BinOpKind, RIsInt);
        E = BinOp->getLHS();
        goto tryAgain;
      }
    }
  }

  return SLCT_NotALiteral;
}
case Stmt::UnaryOperatorClass: {
  const UnaryOperator *UnaOp = cast<UnaryOperator>(E);
  auto ASE = dyn_cast<ArraySubscriptExpr>(UnaOp->getSubExpr());
  if (UnaOp->getOpcode() == UO_AddrOf && ASE) {
    Expr::EvalResult IndexResult;
    if (ASE->getRHS()->EvaluateAsInt(IndexResult, S.Context)) {
      sumOffsets(Offset, IndexResult.Val.getInt(), BO_Add,
                 /*RHS is int*/ true);
      E = ASE->getBase();
      goto tryAgain;
    }
  }

  return SLCT_NotALiteral;
}

default:
  return SLCT_NotALiteral;
}
6843}

6845Sema::FormatStringType Sema::GetFormatStringType(const FormatAttr *Format) {
return llvm::StringSwitch<FormatStringType>(Format->getType()->getName())
    .Case("scanf", FST_Scanf)
    .Cases("printf", "printf0", FST_Printf)
    .Cases("NSString", "CFString", FST_NSString)
    .Case("strftime", FST_Strftime)
    .Case("strfmon", FST_Strfmon)
    .Cases("kprintf", "cmn_err", "vcmn_err", "zcmn_err", FST_Kprintf)
    .Case("freebsd_kprintf", FST_FreeBSDKPrintf)
    .Case("os_trace", FST_OSLog)
    .Case("os_log", FST_OSLog)
    .Default(FST_Unknown);
6857}

6859/// CheckFormatArguments - Check calls to printf and scanf (and similar
6860/// functions) for correct use of format strings.
6861/// Returns true if a format string has been fully checked.
6862bool Sema::CheckFormatArguments(const FormatAttr *Format,
                              ArrayRef<const Expr *> Args,
                              bool IsCXXMember,
                              VariadicCallType CallType,
                              SourceLocation Loc, SourceRange Range,
                              llvm::SmallBitVector &CheckedVarArgs) {
FormatStringInfo FSI;
if (getFormatStringInfo(Format, IsCXXMember, &FSI))
  return CheckFormatArguments(Args, FSI.HasVAListArg, FSI.FormatIdx,
                              FSI.FirstDataArg, GetFormatStringType(Format),
                              CallType, Loc, Range, CheckedVarArgs);
return false;
6874}

6876bool Sema::CheckFormatArguments(ArrayRef<const Expr *> Args,
                              bool HasVAListArg, unsigned format_idx,
                              unsigned firstDataArg, FormatStringType Type,
                              VariadicCallType CallType,
                              SourceLocation Loc, SourceRange Range,
                              llvm::SmallBitVector &CheckedVarArgs) {
// CHECK: printf/scanf-like function is called with no format string.
if (format_idx >= Args.size()) {
  Diag(Loc, diag::warn_missing_format_string) << Range;
  return false;
}

const Expr *OrigFormatExpr = Args[format_idx]->IgnoreParenCasts();

// CHECK: format string is not a string literal.
//
// Dynamically generated format strings are difficult to
// automatically vet at compile time.  Requiring that format strings
// are string literals: (1) permits the checking of format strings by
// the compiler and thereby (2) can practically remove the source of
// many format string exploits.

// Format string can be either ObjC string (e.g. @"%d") or
// C string (e.g. "%d")
// ObjC string uses the same format specifiers as C string, so we can use
// the same format string checking logic for both ObjC and C strings.
UncoveredArgHandler UncoveredArg;
StringLiteralCheckType CT =
    checkFormatStringExpr(*this, OrigFormatExpr, Args, HasVAListArg,
                          format_idx, firstDataArg, Type, CallType,
                          /*IsFunctionCall*/ true, CheckedVarArgs,
                          UncoveredArg,
                          /*no string offset*/ llvm::APSInt(64, false) = 0);

// Generate a diagnostic where an uncovered argument is detected.
if (UncoveredArg.hasUncoveredArg()) {
  unsigned ArgIdx = UncoveredArg.getUncoveredArg() + firstDataArg;
  assert(ArgIdx < Args.size() && "ArgIdx outside bounds")((ArgIdx < Args.size() && "ArgIdx outside bounds")
 ? static_cast<void> (0) : __assert_fail ("ArgIdx < Args.size() && \"ArgIdx outside bounds\""
, "/build/llvm-toolchain-snapshot-9~svn362543/tools/clang/lib/Sema/SemaChecking.cpp"
, 6913, __PRETTY_FUNCTION__));
  UncoveredArg.Diagnose(*this, /*IsFunctionCall*/true, Args[ArgIdx]);
}

if (CT != SLCT_NotALiteral)
  // Literal format string found, check done!
  return CT == SLCT_CheckedLiteral;

// Strftime is particular as it always uses a single 'time' argument,
// so it is safe to pass a non-literal string.
if (Type == FST_Strftime)
  return false;

// Do not emit diag when the string param is a macro expansion and the
// format is either NSString or CFString. This is a hack to prevent
// diag when using the NSLocalizedString and CFCopyLocalizedString macros
// which are usually used in place of NS and CF string literals.
SourceLocation FormatLoc = Args[format_idx]->getBeginLoc();
if (Type == FST_NSString && SourceMgr.isInSystemMacro(FormatLoc))
  return false;

// If there are no arguments specified, warn with -Wformat-security, otherwise
// warn only with -Wformat-nonliteral.
if (Args.size() == firstDataArg) {
  Diag(FormatLoc, diag::warn_format_nonliteral_noargs)
    << OrigFormatExpr->getSourceRange();
  switch (Type) {
  default:
    break;
  case FST_Kprintf:
  case FST_FreeBSDKPrintf:
  case FST_Printf:
    Diag(FormatLoc, diag::note_format_security_fixit)
      << FixItHint::CreateInsertion(FormatLoc, "\"%s\", ");
    break;
  case FST_NSString:
    Diag(FormatLoc, diag::note_format_security_fixit)
      << FixItHint::CreateInsertion(FormatLoc, "@\"%@\", ");
    break;
  }
} else {
  Diag(FormatLoc, diag::warn_format_nonliteral)
    << OrigFormatExpr->getSourceRange();
}
return false;
6958}

6960namespace {

6962class CheckFormatHandler : public analyze_format_string::FormatStringHandler {
6963protected:
Sema &S;
const FormatStringLiteral *FExpr;
const Expr *OrigFormatExpr;
const Sema::FormatStringType FSType;
const unsigned FirstDataArg;
const unsigned NumDataArgs;
const char *Beg; // Start of format string.
const bool HasVAListArg;
ArrayRef<const Expr *> Args;
unsigned FormatIdx;
llvm::SmallBitVector CoveredArgs;
bool usesPositionalArgs = false;
bool atFirstArg = true;
bool inFunctionCall;
Sema::VariadicCallType CallType;
llvm::SmallBitVector &CheckedVarArgs;
UncoveredArgHandler &UncoveredArg;

6982public:
CheckFormatHandler(Sema &s, const FormatStringLiteral *fexpr,
                   const Expr *origFormatExpr,
                   const Sema::FormatStringType type, unsigned firstDataArg,
                   unsigned numDataArgs, const char *beg, bool hasVAListArg,
                   ArrayRef<const Expr *> Args, unsigned formatIdx,
                   bool inFunctionCall, Sema::VariadicCallType callType,
                   llvm::SmallBitVector &CheckedVarArgs,
                   UncoveredArgHandler &UncoveredArg)
    : S(s), FExpr(fexpr), OrigFormatExpr(origFormatExpr), FSType(type),
      FirstDataArg(firstDataArg), NumDataArgs(numDataArgs), Beg(beg),
      HasVAListArg(hasVAListArg), Args(Args), FormatIdx(formatIdx),
      inFunctionCall(inFunctionCall), CallType(callType),
      CheckedVarArgs(CheckedVarArgs), UncoveredArg(UncoveredArg) {
  CoveredArgs.resize(numDataArgs);
  CoveredArgs.reset();
}

void DoneProcessing();

void HandleIncompleteSpecifier(const char *startSpecifier,
                               unsigned specifierLen) override;

void HandleInvalidLengthModifier(
                         const analyze_format_string::FormatSpecifier &FS,
                         const analyze_format_string::ConversionSpecifier &CS,
                         const char *startSpecifier, unsigned specifierLen,
                         unsigned DiagID);

void HandleNonStandardLengthModifier(
                  const analyze_format_string::FormatSpecifier &FS,
                  const char *startSpecifier, unsigned specifierLen);

void HandleNonStandardConversionSpecifier(
                  const analyze_format_string::ConversionSpecifier &CS,
                  const char *startSpecifier, unsigned specifierLen);

void HandlePosition(const char *startPos, unsigned posLen) override;

void HandleInvalidPosition(const char *startSpecifier,
                           unsigned specifierLen,
                           analyze_format_string::PositionContext p) override;

void HandleZeroPosition(const char *startPos, unsigned posLen) override;

void HandleNullChar(const char *nullCharacter) override;

template <typename Range>
static void
EmitFormatDiagnostic(Sema &S, bool inFunctionCall, const Expr *ArgumentExpr,
                     const PartialDiagnostic &PDiag, SourceLocation StringLoc,
                     bool IsStringLocation, Range StringRange,
                     ArrayRef<FixItHint> Fixit = None);

7036protected:
bool HandleInvalidConversionSpecifier(unsigned argIndex, SourceLocation Loc,
                                      const char *startSpec,
                                      unsigned specifierLen,
                                      const char *csStart, unsigned csLen);

void HandlePositionalNonpositionalArgs(SourceLocation Loc,
                                       const char *startSpec,
                                       unsigned specifierLen);

SourceRange getFormatStringRange();
CharSourceRange getSpecifierRange(const char *startSpecifier,
                                  unsigned specifierLen);
SourceLocation getLocationOfByte(const char *x);

const Expr *getDataArg(unsigned i) const;

bool CheckNumArgs(const analyze_format_string::FormatSpecifier &FS,
                  const analyze_format_string::ConversionSpecifier &CS,
                  const char *startSpecifier, unsigned specifierLen,
                  unsigned argIndex);

template <typename Range>
void EmitFormatDiagnostic(PartialDiagnostic PDiag, SourceLocation StringLoc,
                          bool IsStringLocation, Range StringRange,
                          ArrayRef<FixItHint> Fixit = None);
7062};

7064} // namespace

7066SourceRange CheckFormatHandler::getFormatStringRange() {
return OrigFormatExpr->getSourceRange();
7068}

7070CharSourceRange CheckFormatHandler::
7071getSpecifierRange(const char *startSpecifier, unsigned specifierLen) {
SourceLocation Start = getLocationOfByte(startSpecifier);
SourceLocation End   = getLocationOfByte(startSpecifier + specifierLen - 1);

// Advance the end SourceLocation by one due to half-open ranges.
End = End.getLocWithOffset(1);

return CharSourceRange::getCharRange(Start, End);
7079}

7081SourceLocation CheckFormatHandler::getLocationOfByte(const char *x) {
return FExpr->getLocationOfByte(x - Beg, S.getSourceManager(),
                                S.getLangOpts(), S.Context.getTargetInfo());
7084}

7086void CheckFormatHandler::HandleIncompleteSpecifier(const char *startSpecifier,
                                                 unsigned specifierLen){
EmitFormatDiagnostic(S.PDiag(diag::warn_printf_incomplete_specifier),
                     getLocationOfByte(startSpecifier),
                     /*IsStringLocation*/true,
                     getSpecifierRange(startSpecifier, specifierLen));
7092}

7094void CheckFormatHandler::HandleInvalidLengthModifier(
  const analyze_format_string::FormatSpecifier &FS,
  const analyze_format_string::ConversionSpecifier &CS,
  const char *startSpecifier, unsigned specifierLen, unsigned DiagID) {
using namespace analyze_format_string;

const LengthModifier &LM = FS.getLengthModifier();
CharSourceRange LMRange = getSpecifierRange(LM.getStart(), LM.getLength());

// See if we know how to fix this length modifier.
Optional<LengthModifier> FixedLM = FS.getCorrectedLengthModifier();
if (FixedLM) {
  EmitFormatDiagnostic(S.PDiag(DiagID) << LM.toString() << CS.toString(),
                       getLocationOfByte(LM.getStart()),
                       /*IsStringLocation*/true,
                       getSpecifierRange(startSpecifier, specifierLen));

  S.Diag(getLocationOfByte(LM.getStart()), diag::note_format_fix_specifier)
    << FixedLM->toString()
    << FixItHint::CreateReplacement(LMRange, FixedLM->toString());

} else {
  FixItHint Hint;
  if (DiagID == diag::warn_format_nonsensical_length)
    Hint = FixItHint::CreateRemoval(LMRange);

  EmitFormatDiagnostic(S.PDiag(DiagID) << LM.toString() << CS.toString(),
                       getLocationOfByte(LM.getStart()),
                       /*IsStringLocation*/true,
                       getSpecifierRange(startSpecifier, specifierLen),
                       Hint);
}
7126}

7128void CheckFormatHandler::HandleNonStandardLengthModifier(
  const analyze_format_string::FormatSpecifier &FS,
  const char *startSpecifier, unsigned specifierLen) {
using namespace analyze_format_string;

const LengthModifier &LM = FS.getLengthModifier();
CharSourceRange LMRange = getSpecifierRange(LM.getStart(), LM.getLength());

// See if we know how to fix this length modifier.
Optional<LengthModifier> FixedLM = FS.getCorrectedLengthModifier();
if (FixedLM) {
  EmitFormatDiagnostic(S.PDiag(diag::warn_format_non_standard)
                         << LM.toString() << 0,
                       getLocationOfByte(LM.getStart()),
                       /*IsStringLocation*/true,
                       getSpecifierRange(startSpecifier, specifierLen));

  S.Diag(getLocationOfByte(LM.getStart()), diag::note_format_fix_specifier)
    << FixedLM->toString()
    << FixItHint::CreateReplacement(LMRange, FixedLM->toString());

} else {
  EmitFormatDiagnostic(S.PDiag(diag::warn_format_non_standard)
                         << LM.toString() << 0,
                       getLocationOfByte(LM.getStart()),
                       /*IsStringLocation*/true,
                       getSpecifierRange(startSpecifier, specifierLen));
}
7156}

7158void CheckFormatHandler::HandleNonStandardConversionSpecifier(
  const analyze_format_string::ConversionSpecifier &CS,
  const char *startSpecifier, unsigned specifierLen) {
using namespace analyze_format_string;

// See if we know how to fix this conversion specifier.
Optional<ConversionSpecifier> FixedCS = CS.getStandardSpecifier();
if (FixedCS) {
  EmitFormatDiagnostic(S.PDiag(diag::warn_format_non_standard)
                        << CS.toString() << /*conversion specifier*/1,
                       getLocationOfByte(CS.getStart()),
                       /*IsStringLocation*/true,
                       getSpecifierRange(startSpecifier, specifierLen));

  CharSourceRange CSRange = getSpecifierRange(CS.getStart(), CS.getLength());
  S.Diag(getLocationOfByte(CS.getStart()), diag::note_format_fix_specifier)
    << FixedCS->toString()
    << FixItHint::CreateReplacement(CSRange, FixedCS->toString());
} else {
  EmitFormatDiagnostic(S.PDiag(diag::warn_format_non_standard)
                        << CS.toString() << /*conversion specifier*/1,
                       getLocationOfByte(CS.getStart()),
                       /*IsStringLocation*/true,
                       getSpecifierRange(startSpecifier, specifierLen));
}
7183}

7185void CheckFormatHandler::HandlePosition(const char *startPos,
                                      unsigned posLen) {
EmitFormatDiagnostic(S.PDiag(diag::warn_format_non_standard_positional_arg),
                             getLocationOfByte(startPos),
                             /*IsStringLocation*/true,
                             getSpecifierRange(startPos, posLen));
7191}

7193void
7194CheckFormatHandler::HandleInvalidPosition(const char *startPos, unsigned posLen,
                                   analyze_format_string::PositionContext p) {
EmitFormatDiagnostic(S.PDiag(diag::warn_format_invalid_positional_specifier)
                       << (unsigned) p,
                     getLocationOfByte(startPos), /*IsStringLocation*/true,
                     getSpecifierRange(startPos, posLen));
7200}

7202void CheckFormatHandler::HandleZeroPosition(const char *startPos,
                                          unsigned posLen) {
EmitFormatDiagnostic(S.PDiag(diag::warn_format_zero_positional_specifier),
                             getLocationOfByte(startPos),
                             /*IsStringLocation*/true,
                             getSpecifierRange(startPos, posLen));
7208}

7210void CheckFormatHandler::HandleNullChar(const char *nullCharacter) {
if (!isa<ObjCStringLiteral>(OrigFormatExpr)) {
  // The presence of a null character is likely an error.
  EmitFormatDiagnostic(
    S.PDiag(diag::warn_printf_format_string_contains_null_char),
    getLocationOfByte(nullCharacter), /*IsStringLocation*/true,
    getFormatStringRange());
}
7218}

7220// Note that this may return NULL if there was an error parsing or building
7221// one of the argument expressions.
7222const Expr *CheckFormatHandler::getDataArg(unsigned i) const {
return Args[FirstDataArg + i];
7224}

7226void CheckFormatHandler::DoneProcessing() {
// Does the number of data arguments exceed the number of
// format conversions in the format string?
if (!HasVAListArg) {
    // Find any arguments that weren't covered.
  CoveredArgs.flip();
  signed notCoveredArg = CoveredArgs.find_first();
  if (notCoveredArg >= 0) {
    assert((unsigned)notCoveredArg < NumDataArgs)(((unsigned)notCoveredArg < NumDataArgs) ? static_cast<
void> (0) : __assert_fail ("(unsigned)notCoveredArg < NumDataArgs"
, "/build/llvm-toolchain-snapshot-9~svn362543/tools/clang/lib/Sema/SemaChecking.cpp"
, 7234, __PRETTY_FUNCTION__));
    UncoveredArg.Update(notCoveredArg, OrigFormatExpr);
  } else {
    UncoveredArg.setAllCovered();
  }
}
7240}

7242void UncoveredArgHandler::Diagnose(Sema &S, bool IsFunctionCall,
                                 const Expr *ArgExpr) {
assert(hasUncoveredArg() && DiagnosticExprs.size() > 0 &&((hasUncoveredArg() && DiagnosticExprs.size() > 0 &&
 "Invalid state") ? static_cast<void> (0) : __assert_fail
 ("hasUncoveredArg() && DiagnosticExprs.size() > 0 && \"Invalid state\""
, "/build/llvm-toolchain-snapshot-9~svn362543/tools/clang/lib/Sema/SemaChecking.cpp"
, 7245, __PRETTY_FUNCTION__))
       "Invalid state")((hasUncoveredArg() && DiagnosticExprs.size() > 0 &&
 "Invalid state") ? static_cast<void> (0) : __assert_fail
 ("hasUncoveredArg() && DiagnosticExprs.size() > 0 && \"Invalid state\""
, "/build/llvm-toolchain-snapshot-9~svn362543/tools/clang/lib/Sema/SemaChecking.cpp"
, 7245, __PRETTY_FUNCTION__));

if (!ArgExpr)
  return;

SourceLocation Loc = ArgExpr->getBeginLoc();

if (S.getSourceManager().isInSystemMacro(Loc))
  return;

PartialDiagnostic PDiag = S.PDiag(diag::warn_printf_data_arg_not_used);
for (auto E : DiagnosticExprs)
  PDiag << E->getSourceRange();

CheckFormatHandler::EmitFormatDiagnostic(
                                S, IsFunctionCall, DiagnosticExprs[0],
                                PDiag, Loc, /*IsStringLocation*/false,
                                DiagnosticExprs[0]->getSourceRange());
7263}

7265bool
7266CheckFormatHandler::HandleInvalidConversionSpecifier(unsigned argIndex,
                                                   SourceLocation Loc,
                                                   const char *startSpec,
                                                   unsigned specifierLen,
                                                   const char *csStart,
                                                   unsigned csLen) {
bool keepGoing = true;
if (argIndex < NumDataArgs) {
  // Consider the argument coverered, even though the specifier doesn't
  // make sense.
  CoveredArgs.set(argIndex);
}
else {
  // If argIndex exceeds the number of data arguments we
  // don't issue a warning because that is just a cascade of warnings (and
  // they may have intended '%%' anyway). We don't want to continue processing
  // the format string after this point, however, as we will like just get
  // gibberish when trying to match arguments.
  keepGoing = false;
}

StringRef Specifier(csStart, csLen);

// If the specifier in non-printable, it could be the first byte of a UTF-8
// sequence. In that case, print the UTF-8 code point. If not, print the byte
// hex value.
std::string CodePointStr;
if (!llvm::sys::locale::isPrint(*csStart)) {
  llvm::UTF32 CodePoint;
  const llvm::UTF8 **B = reinterpret_cast<const llvm::UTF8 **>(&csStart);
  const llvm::UTF8 *E =
      reinterpret_cast<const llvm::UTF8 *>(csStart + csLen);
  llvm::ConversionResult Result =
      llvm::convertUTF8Sequence(B, E, &CodePoint, llvm::strictConversion);

  if (Result != llvm::conversionOK) {
    unsigned char FirstChar = *csStart;
    CodePoint = (llvm::UTF32)FirstChar;
  }

  llvm::raw_string_ostream OS(CodePointStr);
  if (CodePoint < 256)
    OS << "\\x" << llvm::format("%02x", CodePoint);
  else if (CodePoint <= 0xFFFF)
    OS << "\\u" << llvm::format("%04x", CodePoint);
  else
    OS << "\\U" << llvm::format("%08x", CodePoint);
  OS.flush();
  Specifier = CodePointStr;
}

EmitFormatDiagnostic(
    S.PDiag(diag::warn_format_invalid_conversion) << Specifier, Loc,
    /*IsStringLocation*/ true, getSpecifierRange(startSpec, specifierLen));

return keepGoing;
7322}

7324void
7325CheckFormatHandler::HandlePositionalNonpositionalArgs(SourceLocation Loc,
                                                    const char *startSpec,
                                                    unsigned specifierLen) {
EmitFormatDiagnostic(
  S.PDiag(diag::warn_format_mix_positional_nonpositional_args),
  Loc, /*isStringLoc*/true, getSpecifierRange(startSpec, specifierLen));
7331}

7333bool
7334CheckFormatHandler::CheckNumArgs(
const analyze_format_string::FormatSpecifier &FS,
const analyze_format_string::ConversionSpecifier &CS,
const char *startSpecifier, unsigned specifierLen, unsigned argIndex) {

if (argIndex >= NumDataArgs) {
  PartialDiagnostic PDiag = FS.usesPositionalArg()
    ? (S.PDiag(diag::warn_printf_positional_arg_exceeds_data_args)
         << (argIndex+1) << NumDataArgs)
    : S.PDiag(diag::warn_printf_insufficient_data_args);
  EmitFormatDiagnostic(
    PDiag, getLocationOfByte(CS.getStart()), /*IsStringLocation*/true,
    getSpecifierRange(startSpecifier, specifierLen));

  // Since more arguments than conversion tokens are given, by extension
  // all arguments are covered, so mark this as so.
  UncoveredArg.setAllCovered();
  return false;
}
return true;
7354}

7356template<typename Range>
7357void CheckFormatHandler::EmitFormatDiagnostic(PartialDiagnostic PDiag,
                                            SourceLocation Loc,
                                            bool IsStringLocation,
                                            Range StringRange,
                                            ArrayRef<FixItHint> FixIt) {
EmitFormatDiagnostic(S, inFunctionCall, Args[FormatIdx], PDiag,
                     Loc, IsStringLocation, StringRange, FixIt);
7364}

7366/// If the format string is not within the function call, emit a note
7367/// so that the function call and string are in diagnostic messages.
7368///
7369/// \param InFunctionCall if true, the format string is within the function
7370/// call and only one diagnostic message will be produced.  Otherwise, an
7371/// extra note will be emitted pointing to location of the format string.
7372///
7373/// \param ArgumentExpr the expression that is passed as the format string
7374/// argument in the function call.  Used for getting locations when two
7375/// diagnostics are emitted.
7376///
7377/// \param PDiag the callee should already have provided any strings for the
7378/// diagnostic message.  This function only adds locations and fixits
7379/// to diagnostics.
7380///
7381/// \param Loc primary location for diagnostic.  If two diagnostics are
7382/// required, one will be at Loc and a new SourceLocation will be created for
7383/// the other one.
7384///
7385/// \param IsStringLocation if true, Loc points to the format string should be
7386/// used for the note.  Otherwise, Loc points to the argument list and will
7387/// be used with PDiag.
7388///
7389/// \param StringRange some or all of the string to highlight.  This is
7390/// templated so it can accept either a CharSourceRange or a SourceRange.
7391///
7392/// \param FixIt optional fix it hint for the format string.
7393template <typename Range>
7394void CheckFormatHandler::EmitFormatDiagnostic(
  Sema &S, bool InFunctionCall, const Expr *ArgumentExpr,
  const PartialDiagnostic &PDiag, SourceLocation Loc, bool IsStringLocation,
  Range StringRange, ArrayRef<FixItHint> FixIt) {
if (InFunctionCall) {
  const Sema::SemaDiagnosticBuilder &D = S.Diag(Loc, PDiag);
  D << StringRange;
  D << FixIt;
} else {
  S.Diag(IsStringLocation ? ArgumentExpr->getExprLoc() : Loc, PDiag)
    << ArgumentExpr->getSourceRange();

  const Sema::SemaDiagnosticBuilder &Note =
    S.Diag(IsStringLocation ? Loc : StringRange.getBegin(),
           diag::note_format_string_defined);

  Note << StringRange;
  Note << FixIt;
}
7413}

7415//===--- CHECK: Printf format string checking ------------------------------===//

7417namespace {

7419class CheckPrintfHandler : public CheckFormatHandler {
7420public:
CheckPrintfHandler(Sema &s, const FormatStringLiteral *fexpr,
                   const Expr *origFormatExpr,
                   const Sema::FormatStringType type, unsigned firstDataArg,
                   unsigned numDataArgs, bool isObjC, const char *beg,
                   bool hasVAListArg, ArrayRef<const Expr *> Args,
                   unsigned formatIdx, bool inFunctionCall,
                   Sema::VariadicCallType CallType,
                   llvm::SmallBitVector &CheckedVarArgs,
                   UncoveredArgHandler &UncoveredArg)
    : CheckFormatHandler(s, fexpr, origFormatExpr, type, firstDataArg,
                         numDataArgs, beg, hasVAListArg, Args, formatIdx,
                         inFunctionCall, CallType, CheckedVarArgs,
                         UncoveredArg) {}

bool isObjCContext() const { return FSType == Sema::FST_NSString; }

/// Returns true if '%@' specifiers are allowed in the format string.
bool allowsObjCArg() const {
  return FSType == Sema::FST_NSString || FSType == Sema::FST_OSLog ||
         FSType == Sema::FST_OSTrace;
}

bool HandleInvalidPrintfConversionSpecifier(
                                    const analyze_printf::PrintfSpecifier &FS,
                                    const char *startSpecifier,
                                    unsigned specifierLen) override;

void handleInvalidMaskType(StringRef MaskType) override;

bool HandlePrintfSpecifier(const analyze_printf::PrintfSpecifier &FS,
                           const char *startSpecifier,
                           unsigned specifierLen) override;
bool checkFormatExpr(const analyze_printf::PrintfSpecifier &FS,
                     const char *StartSpecifier,
                     unsigned SpecifierLen,
                     const Expr *E);

bool HandleAmount(const analyze_format_string::OptionalAmount &Amt, unsigned k,
                  const char *startSpecifier, unsigned specifierLen);
void HandleInvalidAmount(const analyze_printf::PrintfSpecifier &FS,
                         const analyze_printf::OptionalAmount &Amt,
                         unsigned type,
                         const char *startSpecifier, unsigned specifierLen);
void HandleFlag(const analyze_printf::PrintfSpecifier &FS,
                const analyze_printf::OptionalFlag &flag,
                const char *startSpecifier, unsigned specifierLen);
void HandleIgnoredFlag(const analyze_printf::PrintfSpecifier &FS,
                       const analyze_printf::OptionalFlag &ignoredFlag,
                       const analyze_printf::OptionalFlag &flag,
                       const char *startSpecifier, unsigned specifierLen);
bool checkForCStrMembers(const analyze_printf::ArgType &AT,
                         const Expr *E);

void HandleEmptyObjCModifierFlag(const char *startFlag,
                                 unsigned flagLen) override;

void HandleInvalidObjCModifierFlag(const char *startFlag,
                                          unsigned flagLen) override;

void HandleObjCFlagsWithNonObjCConversion(const char *flagsStart,
                                         const char *flagsEnd,
                                         const char *conversionPosition)
                                           override;
7484};

7486} // namespace

7488bool CheckPrintfHandler::HandleInvalidPrintfConversionSpecifier(
                                    const analyze_printf::PrintfSpecifier &FS,
                                    const char *startSpecifier,
                                    unsigned specifierLen) {
const analyze_printf::PrintfConversionSpecifier &CS =
  FS.getConversionSpecifier();

return HandleInvalidConversionSpecifier(FS.getArgIndex(),
                                        getLocationOfByte(CS.getStart()),
                                        startSpecifier, specifierLen,
                                        CS.getStart(), CS.getLength());
7499}

7501void CheckPrintfHandler::handleInvalidMaskType(StringRef MaskType) {
S.Diag(getLocationOfByte(MaskType.data()), diag::err_invalid_mask_type_size);
7503}

7505bool CheckPrintfHandler::HandleAmount(
                             const analyze_format_string::OptionalAmount &Amt,
                             unsigned k, const char *startSpecifier,
                             unsigned specifierLen) {
if (Amt.hasDataArgument()) {
  if (!HasVAListArg) {
    unsigned argIndex = Amt.getArgIndex();
    if (argIndex >= NumDataArgs) {
      EmitFormatDiagnostic(S.PDiag(diag::warn_printf_asterisk_missing_arg)
                             << k,
                           getLocationOfByte(Amt.getStart()),
                           /*IsStringLocation*/true,
                           getSpecifierRange(startSpecifier, specifierLen));
      // Don't do any more checking.  We will just emit
      // spurious errors.
      return false;
    }

    // Type check the data argument.  It should be an 'int'.
    // Although not in conformance with C99, we also allow the argument to be
    // an 'unsigned int' as that is a reasonably safe case.  GCC also
    // doesn't emit a warning for that case.
    CoveredArgs.set(argIndex);
    const Expr *Arg = getDataArg(argIndex);
    if (!Arg)
      return false;

    QualType T = Arg->getType();

    const analyze_printf::ArgType &AT = Amt.getArgType(S.Context);
    assert(AT.isValid())((AT.isValid()) ? static_cast<void> (0) : __assert_fail
 ("AT.isValid()", "/build/llvm-toolchain-snapshot-9~svn362543/tools/clang/lib/Sema/SemaChecking.cpp"
, 7535, __PRETTY_FUNCTION__));

    if (!AT.matchesType(S.Context, T)) {
      EmitFormatDiagnostic(S.PDiag(diag::warn_printf_asterisk_wrong_type)
                             << k << AT.getRepresentativeTypeName(S.Context)
                             << T << Arg->getSourceRange(),
                           getLocationOfByte(Amt.getStart()),
                           /*IsStringLocation*/true,
                           getSpecifierRange(startSpecifier, specifierLen));
      // Don't do any more checking.  We will just emit
      // spurious errors.
      return false;
    }
  }
}
return true;
7551}

7553void CheckPrintfHandler::HandleInvalidAmount(
                                    const analyze_printf::PrintfSpecifier &FS,
                                    const analyze_printf::OptionalAmount &Amt,
                                    unsigned type,
                                    const char *startSpecifier,
                                    unsigned specifierLen) {
const analyze_printf::PrintfConversionSpecifier &CS =
  FS.getConversionSpecifier();

FixItHint fixit =
  Amt.getHowSpecified() == analyze_printf::OptionalAmount::Constant
    ? FixItHint::CreateRemoval(getSpecifierRange(Amt.getStart(),
                               Amt.getConstantLength()))
    : FixItHint();

EmitFormatDiagnostic(S.PDiag(diag::warn_printf_nonsensical_optional_amount)
                       << type << CS.toString(),
                     getLocationOfByte(Amt.getStart()),
                     /*IsStringLocation*/true,
                     getSpecifierRange(startSpecifier, specifierLen),
                     fixit);
7574}

7576void CheckPrintfHandler::HandleFlag(const analyze_printf::PrintfSpecifier &FS,
                                  const analyze_printf::OptionalFlag &flag,
                                  const char *startSpecifier,
                                  unsigned specifierLen) {
// Warn about pointless flag with a fixit removal.
const analyze_printf::PrintfConversionSpecifier &CS =
  FS.getConversionSpecifier();
EmitFormatDiagnostic(S.PDiag(diag::warn_printf_nonsensical_flag)
                       << flag.toString() << CS.toString(),
                     getLocationOfByte(flag.getPosition()),
                     /*IsStringLocation*/true,
                     getSpecifierRange(startSpecifier, specifierLen),
                     FixItHint::CreateRemoval(
                       getSpecifierRange(flag.getPosition(), 1)));
7590}

7592void CheckPrintfHandler::HandleIgnoredFlag(
                              const analyze_printf::PrintfSpecifier &FS,
                              const analyze_printf::OptionalFlag &ignoredFlag,
                              const analyze_printf::OptionalFlag &flag,
                              const char *startSpecifier,
                              unsigned specifierLen) {
// Warn about ignored flag with a fixit removal.
EmitFormatDiagnostic(S.PDiag(diag::warn_printf_ignored_flag)
                       << ignoredFlag.toString() << flag.toString(),
                     getLocationOfByte(ignoredFlag.getPosition()),
                     /*IsStringLocation*/true,
                     getSpecifierRange(startSpecifier, specifierLen),
                     FixItHint::CreateRemoval(
                       getSpecifierRange(ignoredFlag.getPosition(), 1)));
7606}

7608void CheckPrintfHandler::HandleEmptyObjCModifierFlag(const char *startFlag,
                                                   unsigned flagLen) {
// Warn about an empty flag.
EmitFormatDiagnostic(S.PDiag(diag::warn_printf_empty_objc_flag),
                     getLocationOfByte(startFlag),
                     /*IsStringLocation*/true,
                     getSpecifierRange(startFlag, flagLen));
7615}

7617void CheckPrintfHandler::HandleInvalidObjCModifierFlag(const char *startFlag,
                                                     unsigned flagLen) {
// Warn about an invalid flag.
auto Range = getSpecifierRange(startFlag, flagLen);
StringRef flag(startFlag, flagLen);
EmitFormatDiagnostic(S.PDiag(diag::warn_printf_invalid_objc_flag) << flag,
                    getLocationOfByte(startFlag),
                    /*IsStringLocation*/true,
                    Range, FixItHint::CreateRemoval(Range));
7626}

7628void CheckPrintfHandler::HandleObjCFlagsWithNonObjCConversion(
  const char *flagsStart, const char *flagsEnd, const char *conversionPosition) {
  // Warn about using '[...]' without a '@' conversion.
  auto Range = getSpecifierRange(flagsStart, flagsEnd - flagsStart + 1);
  auto diag = diag::warn_printf_ObjCflags_without_ObjCConversion;
  EmitFormatDiagnostic(S.PDiag(diag) << StringRef(conversionPosition, 1),
                       getLocationOfByte(conversionPosition),
                       /*IsStringLocation*/true,
                       Range, FixItHint::CreateRemoval(Range));
7637}

7639// Determines if the specified is a C++ class or struct containing
7640// a member with the specified name and kind (e.g. a CXXMethodDecl named
7641// "c_str()").
7642template<typename MemberKind>
7643static llvm::SmallPtrSet<MemberKind*, 1>
7644CXXRecordMembersNamed(StringRef Name, Sema &S, QualType Ty) {
const RecordType *RT = Ty->getAs<RecordType>();
llvm::SmallPtrSet<MemberKind*, 1> Results;

if (!RT)
  return Results;
const CXXRecordDecl *RD = dyn_cast<CXXRecordDecl>(RT->getDecl());
if (!RD || !RD->getDefinition())
  return Results;

LookupResult R(S, &S.Context.Idents.get(Name), SourceLocation(),
               Sema::LookupMemberName);
R.suppressDiagnostics();

// We just need to include all members of the right kind turned up by the
// filter, at this point.
if (S.LookupQualifiedName(R, RT->getDecl()))
  for (LookupResult::iterator I = R.begin(), E = R.end(); I != E; ++I) {
    NamedDecl *decl = (*I)->getUnderlyingDecl();
    if (MemberKind *FK = dyn_cast<MemberKind>(decl))
      Results.insert(FK);
  }
return Results;
7667}

7669/// Check if we could call '.c_str()' on an object.
7670///
7671/// FIXME: This returns the wrong results in some cases (if cv-qualifiers don't
7672/// allow the call, or if it would be ambiguous).
7673bool Sema::hasCStrMethod(const Expr *E) {
using MethodSet = llvm::SmallPtrSet<CXXMethodDecl *, 1>;

MethodSet Results =
    CXXRecordMembersNamed<CXXMethodDecl>("c_str", *this, E->getType());
for (MethodSet::iterator MI = Results.begin(), ME = Results.end();
     MI != ME; ++MI)
  if ((*MI)->getMinRequiredArguments() == 0)
    return true;
return false;
7683}

7685// Check if a (w)string was passed when a (w)char* was needed, and offer a
7686// better diagnostic if so. AT is assumed to be valid.
7687// Returns true when a c_str() conversion method is found.
7688bool CheckPrintfHandler::checkForCStrMembers(
  const analyze_printf::ArgType &AT, const Expr *E) {
using MethodSet = llvm::SmallPtrSet<CXXMethodDecl *, 1>;

MethodSet Results =
    CXXRecordMembersNamed<CXXMethodDecl>("c_str", S, E->getType());

for (MethodSet::iterator MI = Results.begin(), ME = Results.end();
     MI != ME; ++MI) {
  const CXXMethodDecl *Method = *MI;
  if (Method->getMinRequiredArguments() == 0 &&
      AT.matchesType(S.Context, Method->getReturnType())) {
    // FIXME: Suggest parens if the expression needs them.
    SourceLocation EndLoc = S.getLocForEndOfToken(E->getEndLoc());
    S.Diag(E->getBeginLoc(), diag::note_printf_c_str)
        << "c_str()" << FixItHint::CreateInsertion(EndLoc, ".c_str()");
    return true;
  }
}

return false;
7709}

7711bool
7712CheckPrintfHandler::HandlePrintfSpecifier(const analyze_printf::PrintfSpecifier
                                          &FS,
                                        const char *startSpecifier,
                                        unsigned specifierLen) {
using namespace analyze_format_string;
using namespace analyze_printf;

const PrintfConversionSpecifier &CS = FS.getConversionSpecifier();

if (FS.consumesDataArgument()) {
  if (atFirstArg) {
      atFirstArg = false;
      usesPositionalArgs = FS.usesPositionalArg();
  }
  else if (usesPositionalArgs != FS.usesPositionalArg()) {
    HandlePositionalNonpositionalArgs(getLocationOfByte(CS.getStart()),
                                      startSpecifier, specifierLen);
    return false;
  }
}

// First check if the field width, precision, and conversion specifier
// have matching data arguments.
if (!HandleAmount(FS.getFieldWidth(), /* field width */ 0,
                  startSpecifier, specifierLen)) {
  return false;
}

if (!HandleAmount(FS.getPrecision(), /* precision */ 1,
                  startSpecifier, specifierLen)) {
  return false;
}

if (!CS.consumesDataArgument()) {
  // FIXME: Technically specifying a precision or field width here
  // makes no sense.  Worth issuing a warning at some point.
  return true;
}

// Consume the argument.
unsigned argIndex = FS.getArgIndex();
if (argIndex < NumDataArgs) {
  // The check to see if the argIndex is valid will come later.
  // We set the bit here because we may exit early from this
  // function if we encounter some other error.
  CoveredArgs.set(argIndex);
}

// FreeBSD kernel extensions.
if (CS.getKind() == ConversionSpecifier::FreeBSDbArg ||
    CS.getKind() == ConversionSpecifier::FreeBSDDArg) {
  // We need at least two arguments.
  if (!CheckNumArgs(FS, CS, startSpecifier, specifierLen, argIndex + 1))
    return false;

  // Claim the second argument.
  CoveredArgs.set(argIndex + 1);

  // Type check the first argument (int for %b, pointer for %D)
  const Expr *Ex = getDataArg(argIndex);
  const analyze_printf::ArgType &AT =
    (CS.getKind() == ConversionSpecifier::FreeBSDbArg) ?
      ArgType(S.Context.IntTy) : ArgType::CPointerTy;
  if (AT.isValid() && !AT.matchesType(S.Context, Ex->getType()))
    EmitFormatDiagnostic(
        S.PDiag(diag::warn_format_conversion_argument_type_mismatch)
            << AT.getRepresentativeTypeName(S.Context) << Ex->getType()
            << false << Ex->getSourceRange(),
        Ex->getBeginLoc(), /*IsStringLocation*/ false,
        getSpecifierRange(startSpecifier, specifierLen));

  // Type check the second argument (char * for both %b and %D)
  Ex = getDataArg(argIndex + 1);
  const analyze_printf::ArgType &AT2 = ArgType::CStrTy;
  if (AT2.isValid() && !AT2.matchesType(S.Context, Ex->getType()))
    EmitFormatDiagnostic(
        S.PDiag(diag::warn_format_conversion_argument_type_mismatch)
            << AT2.getRepresentativeTypeName(S.Context) << Ex->getType()
            << false << Ex->getSourceRange(),
        Ex->getBeginLoc(), /*IsStringLocation*/ false,
        getSpecifierRange(startSpecifier, specifierLen));

   return true;
}

// Check for using an Objective-C specific conversion specifier
// in a non-ObjC literal.
if (!allowsObjCArg() && CS.isObjCArg()) {
  return HandleInvalidPrintfConversionSpecifier(FS, startSpecifier,
                                                specifierLen);
}

// %P can only be used with os_log.
if (FSType != Sema::FST_OSLog && CS.getKind() == ConversionSpecifier::PArg) {
  return HandleInvalidPrintfConversionSpecifier(FS, startSpecifier,
                                                specifierLen);
}

// %n is not allowed with os_log.
if (FSType == Sema::FST_OSLog && CS.getKind() == ConversionSpecifier::nArg) {
  EmitFormatDiagnostic(S.PDiag(diag::warn_os_log_format_narg),
                       getLocationOfByte(CS.getStart()),
                       /*IsStringLocation*/ false,
                       getSpecifierRange(startSpecifier, specifierLen));

  return true;
}

// Only scalars are allowed for os_trace.
if (FSType == Sema::FST_OSTrace &&
    (CS.getKind() == ConversionSpecifier::PArg ||
     CS.getKind() == ConversionSpecifier::sArg ||
     CS.getKind() == ConversionSpecifier::ObjCObjArg)) {
  return HandleInvalidPrintfConversionSpecifier(FS, startSpecifier,
                                                specifierLen);
}

// Check for use of public/private annotation outside of os_log().
if (FSType != Sema::FST_OSLog) {
  if (FS.isPublic().isSet()) {
    EmitFormatDiagnostic(S.PDiag(diag::warn_format_invalid_annotation)
                             << "public",
                         getLocationOfByte(FS.isPublic().getPosition()),
                         /*IsStringLocation*/ false,
                         getSpecifierRange(startSpecifier, specifierLen));
  }
  if (FS.isPrivate().isSet()) {
    EmitFormatDiagnostic(S.PDiag(diag::warn_format_invalid_annotation)
                             << "private",
                         getLocationOfByte(FS.isPrivate().getPosition()),
                         /*IsStringLocation*/ false,
                         getSpecifierRange(startSpecifier, specifierLen));
  }
}

// Check for invalid use of field width
if (!FS.hasValidFieldWidth()) {
  HandleInvalidAmount(FS, FS.getFieldWidth(), /* field width */ 0,
      startSpecifier, specifierLen);
}

// Check for invalid use of precision
if (!FS.hasValidPrecision()) {
  HandleInvalidAmount(FS, FS.getPrecision(), /* precision */ 1,
      startSpecifier, specifierLen);
}

// Precision is mandatory for %P specifier.
if (CS.getKind() == ConversionSpecifier::PArg &&
    FS.getPrecision().getHowSpecified() == OptionalAmount::NotSpecified) {
  EmitFormatDiagnostic(S.PDiag(diag::warn_format_P_no_precision),
                       getLocationOfByte(startSpecifier),
                       /*IsStringLocation*/ false,
                       getSpecifierRange(startSpecifier, specifierLen));
}

// Check each flag does not conflict with any other component.
if (!FS.hasValidThousandsGroupingPrefix())
  HandleFlag(FS, FS.hasThousandsGrouping(), startSpecifier, specifierLen);
if (!FS.hasValidLeadingZeros())
  HandleFlag(FS, FS.hasLeadingZeros(), startSpecifier, specifierLen);
if (!FS.hasValidPlusPrefix())
  HandleFlag(FS, FS.hasPlusPrefix(), startSpecifier, specifierLen);
if (!FS.hasValidSpacePrefix())
  HandleFlag(FS, FS.hasSpacePrefix(), startSpecifier, specifierLen);
if (!FS.hasValidAlternativeForm())
  HandleFlag(FS, FS.hasAlternativeForm(), startSpecifier, specifierLen);
if (!FS.hasValidLeftJustified())
  HandleFlag(FS, FS.isLeftJustified(), startSpecifier, specifierLen);

// Check that flags are not ignored by another flag
if (FS.hasSpacePrefix() && FS.hasPlusPrefix()) // ' ' ignored by '+'
  HandleIgnoredFlag(FS, FS.hasSpacePrefix(), FS.hasPlusPrefix(),
      startSpecifier, specifierLen);
if (FS.hasLeadingZeros() && FS.isLeftJustified()) // '0' ignored by '-'
  HandleIgnoredFlag(FS, FS.hasLeadingZeros(), FS.isLeftJustified(),
          startSpecifier, specifierLen);

// Check the length modifier is valid with the given conversion specifier.
if (!FS.hasValidLengthModifier(S.getASTContext().getTargetInfo(),
                               S.getLangOpts()))
  HandleInvalidLengthModifier(FS, CS, startSpecifier, specifierLen,
                              diag::warn_format_nonsensical_length);
else if (!FS.hasStandardLengthModifier())
  HandleNonStandardLengthModifier(FS, startSpecifier, specifierLen);
else if (!FS.hasStandardLengthConversionCombination())
  HandleInvalidLengthModifier(FS, CS, startSpecifier, specifierLen,
                              diag::warn_format_non_standard_conversion_spec);

if (!FS.hasStandardConversionSpecifier(S.getLangOpts()))
  HandleNonStandardConversionSpecifier(CS, startSpecifier, specifierLen);

// The remaining checks depend on the data arguments.
if (HasVAListArg)
  return true;

if (!CheckNumArgs(FS, CS, startSpecifier, specifierLen, argIndex))
  return false;

const Expr *Arg = getDataArg(argIndex);
if (!Arg)
  return true;

return checkFormatExpr(FS, startSpecifier, specifierLen, Arg);
7916}

7918static bool requiresParensToAddCast(const Expr *E) {
// FIXME: We should have a general way to reason about operator
// precedence and whether parens are actually needed here.
// Take care of a few common cases where they aren't.
const Expr *Inside = E->IgnoreImpCasts();
if (const PseudoObjectExpr *POE = dyn_cast<PseudoObjectExpr>(Inside))
  Inside = POE->getSyntacticForm()->IgnoreImpCasts();

switch (Inside->getStmtClass()) {
case Stmt::ArraySubscriptExprClass:
case Stmt::CallExprClass:
case Stmt::CharacterLiteralClass:
case Stmt::CXXBoolLiteralExprClass:
case Stmt::DeclRefExprClass:
case Stmt::FloatingLiteralClass:
case Stmt::IntegerLiteralClass:
case Stmt::MemberExprClass:
case Stmt::ObjCArrayLiteralClass:
case Stmt::ObjCBoolLiteralExprClass:
case Stmt::ObjCBoxedExprClass:
case Stmt::ObjCDictionaryLiteralClass:
case Stmt::ObjCEncodeExprClass:
case Stmt::ObjCIvarRefExprClass:
case Stmt::ObjCMessageExprClass:
case Stmt::ObjCPropertyRefExprClass:
case Stmt::ObjCStringLiteralClass:
case Stmt::ObjCSubscriptRefExprClass:
case Stmt::ParenExprClass:
case Stmt::StringLiteralClass:
case Stmt::UnaryOperatorClass:
  return false;
default:
  return true;
}
7952}

7954static std::pair<QualType, StringRef>
7955shouldNotPrintDirectly(const ASTContext &Context,
                     QualType IntendedTy,
                     const Expr *E) {
// Use a 'while' to peel off layers of typedefs.
QualType TyTy = IntendedTy;
while (const TypedefType *UserTy = TyTy->getAs<TypedefType>()) {
  StringRef Name = UserTy->getDecl()->getName();
  QualType CastTy = llvm::StringSwitch<QualType>(Name)
    .Case("CFIndex", Context.getNSIntegerType())
    .Case("NSInteger", Context.getNSIntegerType())
    .Case("NSUInteger", Context.getNSUIntegerType())
    .Case("SInt32", Context.IntTy)
    .Case("UInt32", Context.UnsignedIntTy)
    .Default(QualType());

  if (!CastTy.isNull())
    return std::make_pair(CastTy, Name);

  TyTy = UserTy->desugar();
}

// Strip parens if necessary.
if (const ParenExpr *PE = dyn_cast<ParenExpr>(E))
  return shouldNotPrintDirectly(Context,
                                PE->getSubExpr()->getType(),
                                PE->getSubExpr());

// If this is a conditional expression, then its result type is constructed
// via usual arithmetic conversions and thus there might be no necessary
// typedef sugar there.  Recurse to operands to check for NSInteger &
// Co. usage condition.
if (const ConditionalOperator *CO = dyn_cast<ConditionalOperator>(E)) {
  QualType TrueTy, FalseTy;
  StringRef TrueName, FalseName;

  std::tie(TrueTy, TrueName) =
    shouldNotPrintDirectly(Context,
                           CO->getTrueExpr()->getType(),
                           CO->getTrueExpr());
  std::tie(FalseTy, FalseName) =
    shouldNotPrintDirectly(Context,
                           CO->getFalseExpr()->getType(),
                           CO->getFalseExpr());

  if (TrueTy == FalseTy)
    return std::make_pair(TrueTy, TrueName);
  else if (TrueTy.isNull())
    return std::make_pair(FalseTy, FalseName);
  else if (FalseTy.isNull())
    return std::make_pair(TrueTy, TrueName);
}

return std::make_pair(QualType(), StringRef());
8008}

8010/// Return true if \p ICE is an implicit argument promotion of an arithmetic
8011/// type. Bit-field 'promotions' from a higher ranked type to a lower ranked
8012/// type do not count.
8013static bool
8014isArithmeticArgumentPromotion(Sema &S, const ImplicitCastExpr *ICE) {
QualType From = ICE->getSubExpr()->getType();
QualType To = ICE->getType();
// It's an integer promotion if the destination type is the promoted
// source type.
if (ICE->getCastKind() == CK_IntegralCast &&
    From->isPromotableIntegerType() &&
    S.Context.getPromotedIntegerType(From) == To)
  return true;
// Look through vector types, since we do default argument promotion for
// those in OpenCL.
if (const auto *VecTy = From->getAs<ExtVectorType>())
  From = VecTy->getElementType();
if (const auto *VecTy = To->getAs<ExtVectorType>())
  To = VecTy->getElementType();
// It's a floating promotion if the source type is a lower rank.
return ICE->getCastKind() == CK_FloatingCast &&
       S.Context.getFloatingTypeOrder(From, To) < 0;
8032}

8034bool
8035CheckPrintfHandler::checkFormatExpr(const analyze_printf::PrintfSpecifier &FS,
                                  const char *StartSpecifier,
                                  unsigned SpecifierLen,
                                  const Expr *E) {
using namespace analyze_format_string;
using namespace analyze_printf;

// Now type check the data expression that matches the
// format specifier.
const analyze_printf::ArgType &AT = FS.getArgType(S.Context, isObjCContext());
if (!AT.isValid())
  return true;

QualType ExprTy = E->getType();
while (const TypeOfExprType *TET = dyn_cast<TypeOfExprType>(ExprTy)) {
  ExprTy = TET->getUnderlyingExpr()->getType();
}

const analyze_printf::ArgType::MatchKind Match =
    AT.matchesType(S.Context, ExprTy);
bool Pedantic = Match == analyze_printf::ArgType::NoMatchPedantic;
if (Match == analyze_printf::ArgType::Match)
  return true;

// Look through argument promotions for our error message's reported type.
// This includes the integral and floating promotions, but excludes array
// and function pointer decay (seeing that an argument intended to be a
// string has type 'char [6]' is probably more confusing than 'char *') and
// certain bitfield promotions (bitfields can be 'demoted' to a lesser type).
if (const ImplicitCastExpr *ICE = dyn_cast<ImplicitCastExpr>(E)) {
  if (isArithmeticArgumentPromotion(S, ICE)) {
    E = ICE->getSubExpr();
    ExprTy = E->getType();

    // Check if we didn't match because of an implicit cast from a 'char'
    // or 'short' to an 'int'.  This is done because printf is a varargs
    // function.
    if (ICE->getType() == S.Context.IntTy ||
        ICE->getType() == S.Context.UnsignedIntTy) {
      // All further checking is done on the subexpression.
      if (AT.matchesType(S.Context, ExprTy))
        return true;
    }
  }
} else if (const CharacterLiteral *CL = dyn_cast<CharacterLiteral>(E)) {
  // Special case for 'a', which has type 'int' in C.
  // Note, however, that we do /not/ want to treat multibyte constants like
  // 'MooV' as characters! This form is deprecated but still exists.
  if (ExprTy == S.Context.IntTy)
    if (llvm::isUIntN(S.Context.getCharWidth(), CL->getValue()))
      ExprTy = S.Context.CharTy;
}

// Look through enums to their underlying type.
bool IsEnum = false;
if (auto EnumTy = ExprTy->getAs<EnumType>()) {
  ExprTy = EnumTy->getDecl()->getIntegerType();
  IsEnum = true;
}

// %C in an Objective-C context prints a unichar, not a wchar_t.
// If the argument is an integer of some kind, believe the %C and suggest
// a cast instead of changing the conversion specifier.
QualType IntendedTy = ExprTy;
if (isObjCContext() &&
    FS.getConversionSpecifier().getKind() == ConversionSpecifier::CArg) {
  if (ExprTy->isIntegralOrUnscopedEnumerationType() &&
      !ExprTy->isCharType()) {
    // 'unichar' is defined as a typedef of unsigned short, but we should
    // prefer using the typedef if it is visible.
    IntendedTy = S.Context.UnsignedShortTy;

    // While we are here, check if the value is an IntegerLiteral that happens
    // to be within the valid range.
    if (const IntegerLiteral *IL = dyn_cast<IntegerLiteral>(E)) {
      const llvm::APInt &V = IL->getValue();
      if (V.getActiveBits() <= S.Context.getTypeSize(IntendedTy))
        return true;
    }

    LookupResult Result(S, &S.Context.Idents.get("unichar"), E->getBeginLoc(),
                        Sema::LookupOrdinaryName);
    if (S.LookupName(Result, S.getCurScope())) {
      NamedDecl *ND = Result.getFoundDecl();
      if (TypedefNameDecl *TD = dyn_cast<TypedefNameDecl>(ND))
        if (TD->getUnderlyingType() == IntendedTy)
          IntendedTy = S.Context.getTypedefType(TD);
    }
  }
}

// Special-case some of Darwin's platform-independence types by suggesting
// casts to primitive types that are known to be large enough.
bool ShouldNotPrintDirectly = false; StringRef CastTyName;
if (S.Context.getTargetInfo().getTriple().isOSDarwin()) {
  QualType CastTy;
  std::tie(CastTy, CastTyName) = shouldNotPrintDirectly(S.Context, IntendedTy, E);
  if (!CastTy.isNull()) {
    // %zi/%zu and %td/%tu are OK to use for NSInteger/NSUInteger of type int
    // (long in ASTContext). Only complain to pedants.
    if ((CastTyName == "NSInteger" || CastTyName == "NSUInteger") &&
        (AT.isSizeT() || AT.isPtrdiffT()) &&
        AT.matchesType(S.Context, CastTy))
      Pedantic = true;
    IntendedTy = CastTy;
    ShouldNotPrintDirectly = true;
  }
}

// We may be able to offer a FixItHint if it is a supported type.
PrintfSpecifier fixedFS = FS;
bool Success =
    fixedFS.fixType(IntendedTy, S.getLangOpts(), S.Context, isObjCContext());

if (Success) {
  // Get the fix string from the fixed format specifier
  SmallString<16> buf;
  llvm::raw_svector_ostream os(buf);
  fixedFS.toString(os);

  CharSourceRange SpecRange = getSpecifierRange(StartSpecifier, SpecifierLen);

  if (IntendedTy == ExprTy && !ShouldNotPrintDirectly) {
    unsigned Diag =
        Pedantic
            ? diag::warn_format_conversion_argument_type_mismatch_pedantic
            : diag::warn_format_conversion_argument_type_mismatch;
    // In this case, the specifier is wrong and should be changed to match
    // the argument.
    EmitFormatDiagnostic(S.PDiag(Diag)
                             << AT.getRepresentativeTypeName(S.Context)
                             << IntendedTy << IsEnum << E->getSourceRange(),
                         E->getBeginLoc(),
                         /*IsStringLocation*/ false, SpecRange,
                         FixItHint::CreateReplacement(SpecRange, os.str()));
  } else {
    // The canonical type for formatting this value is different from the
    // actual type of the expression. (This occurs, for example, with Darwin's
    // NSInteger on 32-bit platforms, where it is typedef'd as 'int', but
    // should be printed as 'long' for 64-bit compatibility.)
    // Rather than emitting a normal format/argument mismatch, we want to
    // add a cast to the recommended type (and correct the format string
    // if necessary).
    SmallString<16> CastBuf;
    llvm::raw_svector_ostream CastFix(CastBuf);
    CastFix << "(";
    IntendedTy.print(CastFix, S.Context.getPrintingPolicy());
    CastFix << ")";

    SmallVector<FixItHint,4> Hints;
    if (!AT.matchesType(S.Context, IntendedTy) || ShouldNotPrintDirectly)
      Hints.push_back(FixItHint::CreateReplacement(SpecRange, os.str()));

    if (const CStyleCastExpr *CCast = dyn_cast<CStyleCastExpr>(E)) {
      // If there's already a cast present, just replace it.
      SourceRange CastRange(CCast->getLParenLoc(), CCast->getRParenLoc());
      Hints.push_back(FixItHint::CreateReplacement(CastRange, CastFix.str()));

    } else if (!requiresParensToAddCast(E)) {
      // If the expression has high enough precedence,
      // just write the C-style cast.
      Hints.push_back(
          FixItHint::CreateInsertion(E->getBeginLoc(), CastFix.str()));
    } else {
      // Otherwise, add parens around the expression as well as the cast.
      CastFix << "(";
      Hints.push_back(
          FixItHint::CreateInsertion(E->getBeginLoc(), CastFix.str()));

      SourceLocation After = S.getLocForEndOfToken(E->getEndLoc());
      Hints.push_back(FixItHint::CreateInsertion(After, ")"));
    }

    if (ShouldNotPrintDirectly) {
      // The expression has a type that should not be printed directly.
      // We extract the name from the typedef because we don't want to show
      // the underlying type in the diagnostic.
      StringRef Name;
      if (const TypedefType *TypedefTy = dyn_cast<TypedefType>(ExprTy))
        Name = TypedefTy->getDecl()->getName();
      else
        Name = CastTyName;
      unsigned Diag = Pedantic
                          ? diag::warn_format_argument_needs_cast_pedantic
                          : diag::warn_format_argument_needs_cast;
      EmitFormatDiagnostic(S.PDiag(Diag) << Name << IntendedTy << IsEnum
                                         << E->getSourceRange(),
                           E->getBeginLoc(), /*IsStringLocation=*/false,
                           SpecRange, Hints);
    } else {
      // In this case, the expression could be printed using a different
      // specifier, but we've decided that the specifier is probably correct
      // and we should cast instead. Just use the normal warning message.
      EmitFormatDiagnostic(
          S.PDiag(diag::warn_format_conversion_argument_type_mismatch)
              << AT.getRepresentativeTypeName(S.Context) << ExprTy << IsEnum
              << E->getSourceRange(),
          E->getBeginLoc(), /*IsStringLocation*/ false, SpecRange, Hints);
    }
  }
} else {
  const CharSourceRange &CSR = getSpecifierRange(StartSpecifier,
                                                 SpecifierLen);
  // Since the warning for passing non-POD types to variadic functions
  // was deferred until now, we emit a warning for non-POD
  // arguments here.
  switch (S.isValidVarArgType(ExprTy)) {
  case Sema::VAK_Valid:
  case Sema::VAK_ValidInCXX11: {
    unsigned Diag =
        Pedantic
            ? diag::warn_format_conversion_argument_type_mismatch_pedantic
            : diag::warn_format_conversion_argument_type_mismatch;

    EmitFormatDiagnostic(
        S.PDiag(Diag) << AT.getRepresentativeTypeName(S.Context) << ExprTy
                      << IsEnum << CSR << E->getSourceRange(),
        E->getBeginLoc(), /*IsStringLocation*/ false, CSR);
    break;
  }
  case Sema::VAK_Undefined:
  case Sema::VAK_MSVCUndefined:
    EmitFormatDiagnostic(S.PDiag(diag::warn_non_pod_vararg_with_format_string)
                             << S.getLangOpts().CPlusPlus11 << ExprTy
                             << CallType
                             << AT.getRepresentativeTypeName(S.Context) << CSR
                             << E->getSourceRange(),
                         E->getBeginLoc(), /*IsStringLocation*/ false, CSR);
    checkForCStrMembers(AT, E);
    break;

  case Sema::VAK_Invalid:
    if (ExprTy->isObjCObjectType())
      EmitFormatDiagnostic(
          S.PDiag(diag::err_cannot_pass_objc_interface_to_vararg_format)
              << S.getLangOpts().CPlusPlus11 << ExprTy << CallType
              << AT.getRepresentativeTypeName(S.Context) << CSR
              << E->getSourceRange(),
          E->getBeginLoc(), /*IsStringLocation*/ false, CSR);
    else
      // FIXME: If this is an initializer list, suggest removing the braces
      // or inserting a cast to the target type.
      S.Diag(E->getBeginLoc(), diag::err_cannot_pass_to_vararg_format)
          << isa<InitListExpr>(E) << ExprTy << CallType
          << AT.getRepresentativeTypeName(S.Context) << E->getSourceRange();
    break;
  }

  assert(FirstDataArg + FS.getArgIndex() < CheckedVarArgs.size() &&((FirstDataArg + FS.getArgIndex() < CheckedVarArgs.size() &&
 "format string specifier index out of range") ? static_cast<
void> (0) : __assert_fail ("FirstDataArg + FS.getArgIndex() < CheckedVarArgs.size() && \"format string specifier index out of range\""
, "/build/llvm-toolchain-snapshot-9~svn362543/tools/clang/lib/Sema/SemaChecking.cpp"
, 8284, __PRETTY_FUNCTION__))
         "format string specifier index out of range")((FirstDataArg + FS.getArgIndex() < CheckedVarArgs.size() &&
 "format string specifier index out of range") ? static_cast<
void> (0) : __assert_fail ("FirstDataArg + FS.getArgIndex() < CheckedVarArgs.size() && \"format string specifier index out of range\""
, "/build/llvm-toolchain-snapshot-9~svn362543/tools/clang/lib/Sema/SemaChecking.cpp"
, 8284, __PRETTY_FUNCTION__));
  CheckedVarArgs[FirstDataArg + FS.getArgIndex()] = true;
}

return true;
8289}

8291//===--- CHECK: Scanf format string checking ------------------------------===//

8293namespace {

8295class CheckScanfHandler : public CheckFormatHandler {
8296public:
CheckScanfHandler(Sema &s, const FormatStringLiteral *fexpr,
                  const Expr *origFormatExpr, Sema::FormatStringType type,
                  unsigned firstDataArg, unsigned numDataArgs,
                  const char *beg, bool hasVAListArg,
                  ArrayRef<const Expr *> Args, unsigned formatIdx,
                  bool inFunctionCall, Sema::VariadicCallType CallType,
                  llvm::SmallBitVector &CheckedVarArgs,
                  UncoveredArgHandler &UncoveredArg)
    : CheckFormatHandler(s, fexpr, origFormatExpr, type, firstDataArg,
                         numDataArgs, beg, hasVAListArg, Args, formatIdx,
                         inFunctionCall, CallType, CheckedVarArgs,
                         UncoveredArg) {}

bool HandleScanfSpecifier(const analyze_scanf::ScanfSpecifier &FS,
                          const char *startSpecifier,
                          unsigned specifierLen) override;

bool HandleInvalidScanfConversionSpecifier(
        const analyze_scanf::ScanfSpecifier &FS,
        const char *startSpecifier,
        unsigned specifierLen) override;

void HandleIncompleteScanList(const char *start, const char *end) override;
8320};

8322} // namespace

8324void CheckScanfHandler::HandleIncompleteScanList(const char *start,
                                               const char *end) {
EmitFormatDiagnostic(S.PDiag(diag::warn_scanf_scanlist_incomplete),
                     getLocationOfByte(end), /*IsStringLocation*/true,
                     getSpecifierRange(start, end - start));
8329}

8331bool CheckScanfHandler::HandleInvalidScanfConversionSpecifier(
                                      const analyze_scanf::ScanfSpecifier &FS,
                                      const char *startSpecifier,
                                      unsigned specifierLen) {
const analyze_scanf::ScanfConversionSpecifier &CS =
  FS.getConversionSpecifier();

return HandleInvalidConversionSpecifier(FS.getArgIndex(),
                                        getLocationOfByte(CS.getStart()),
                                        startSpecifier, specifierLen,
                                        CS.getStart(), CS.getLength());
8342}

8344bool CheckScanfHandler::HandleScanfSpecifier(
                                     const analyze_scanf::ScanfSpecifier &FS,
                                     const char *startSpecifier,
                                     unsigned specifierLen) {
using namespace analyze_scanf;
using namespace analyze_format_string;

const ScanfConversionSpecifier &CS = FS.getConversionSpecifier();

// Handle case where '%' and '*' don't consume an argument.  These shouldn't
// be used to decide if we are using positional arguments consistently.
if (FS.consumesDataArgument()) {
  if (atFirstArg) {
    atFirstArg = false;
    usesPositionalArgs = FS.usesPositionalArg();
  }
  else if (usesPositionalArgs != FS.usesPositionalArg()) {
    HandlePositionalNonpositionalArgs(getLocationOfByte(CS.getStart()),
                                      startSpecifier, specifierLen);
    return false;
  }
}

// Check if the field with is non-zero.
const OptionalAmount &Amt = FS.getFieldWidth();
if (Amt.getHowSpecified() == OptionalAmount::Constant) {
  if (Amt.getConstantAmount() == 0) {
    const CharSourceRange &R = getSpecifierRange(Amt.getStart(),
                                                 Amt.getConstantLength());
    EmitFormatDiagnostic(S.PDiag(diag::warn_scanf_nonzero_width),
                         getLocationOfByte(Amt.getStart()),
                         /*IsStringLocation*/true, R,
                         FixItHint::CreateRemoval(R));
  }
}

if (!FS.consumesDataArgument()) {
  // FIXME: Technically specifying a precision or field width here
  // makes no sense.  Worth issuing a warning at some point.
  return true;
}

// Consume the argument.
unsigned argIndex = FS.getArgIndex();
if (argIndex < NumDataArgs) {
    // The check to see if the argIndex is valid will come later.
    // We set the bit here because we may exit early from this
    // function if we encounter some other error.
  CoveredArgs.set(argIndex);
}

// Check the length modifier is valid with the given conversion specifier.
if (!FS.hasValidLengthModifier(S.getASTContext().getTargetInfo(),
                               S.getLangOpts()))
  HandleInvalidLengthModifier(FS, CS, startSpecifier, specifierLen,
                              diag::warn_format_nonsensical_length);
else if (!FS.hasStandardLengthModifier())
  HandleNonStandardLengthModifier(FS, startSpecifier, specifierLen);
else if (!FS.hasStandardLengthConversionCombination())
  HandleInvalidLengthModifier(FS, CS, startSpecifier, specifierLen,
                              diag::warn_format_non_standard_conversion_spec);

if (!FS.hasStandardConversionSpecifier(S.getLangOpts()))
  HandleNonStandardConversionSpecifier(CS, startSpecifier, specifierLen);

// The remaining checks depend on the data arguments.
if (HasVAListArg)
  return true;

if (!CheckNumArgs(FS, CS, startSpecifier, specifierLen, argIndex))
  return false;

// Check that the argument type matches the format specifier.
const Expr *Ex = getDataArg(argIndex);
if (!Ex)
  return true;

const analyze_format_string::ArgType &AT = FS.getArgType(S.Context);

if (!AT.isValid()) {
  return true;
}

analyze_format_string::ArgType::MatchKind Match =
    AT.matchesType(S.Context, Ex->getType());
bool Pedantic = Match == analyze_format_string::ArgType::NoMatchPedantic;
if (Match == analyze_format_string::ArgType::Match)
  return true;

ScanfSpecifier fixedFS = FS;
bool Success = fixedFS.fixType(Ex->getType(), Ex->IgnoreImpCasts()->getType(),
                               S.getLangOpts(), S.Context);

unsigned Diag =
    Pedantic ? diag::warn_format_conversion_argument_type_mismatch_pedantic
             : diag::warn_format_conversion_argument_type_mismatch;

if (Success) {
  // Get the fix string from the fixed format specifier.
  SmallString<128> buf;
  llvm::raw_svector_ostream os(buf);
  fixedFS.toString(os);

  EmitFormatDiagnostic(
      S.PDiag(Diag) << AT.getRepresentativeTypeName(S.Context)
                    << Ex->getType() << false << Ex->getSourceRange(),
      Ex->getBeginLoc(),
      /*IsStringLocation*/ false,
      getSpecifierRange(startSpecifier, specifierLen),
      FixItHint::CreateReplacement(
          getSpecifierRange(startSpecifier, specifierLen), os.str()));
} else {
  EmitFormatDiagnostic(S.PDiag(Diag)
                           << AT.getRepresentativeTypeName(S.Context)
                           << Ex->getType() << false << Ex->getSourceRange(),
                       Ex->getBeginLoc(),
                       /*IsStringLocation*/ false,
                       getSpecifierRange(startSpecifier, specifierLen));
}

return true;
8465}

8467static void CheckFormatString(Sema &S, const FormatStringLiteral *FExpr,
                            const Expr *OrigFormatExpr,
                            ArrayRef<const Expr *> Args,
                            bool HasVAListArg, unsigned format_idx,
                            unsigned firstDataArg,
                            Sema::FormatStringType Type,
                            bool inFunctionCall,
                            Sema::VariadicCallType CallType,
                            llvm::SmallBitVector &CheckedVarArgs,
                            UncoveredArgHandler &UncoveredArg) {
// CHECK: is the format string a wide literal?
if (!FExpr->isAscii() && !FExpr->isUTF8()) {
  CheckFormatHandler::EmitFormatDiagnostic(
      S, inFunctionCall, Args[format_idx],
      S.PDiag(diag::warn_format_string_is_wide_literal), FExpr->getBeginLoc(),
      /*IsStringLocation*/ true, OrigFormatExpr->getSourceRange());
  return;
}

// Str - The format string.  NOTE: this is NOT null-terminated!
StringRef StrRef = FExpr->getString();
const char *Str = StrRef.data();
// Account for cases where the string literal is truncated in a declaration.
const ConstantArrayType *T =
  S.Context.getAsConstantArrayType(FExpr->getType());
assert(T && "String literal not of constant array type!")((T && "String literal not of constant array type!") ?
 static_cast<void> (0) : __assert_fail ("T && \"String literal not of constant array type!\""
, "/build/llvm-toolchain-snapshot-9~svn362543/tools/clang/lib/Sema/SemaChecking.cpp"
, 8492, __PRETTY_FUNCTION__));
size_t TypeSize = T->getSize().getZExtValue();
size_t StrLen = std::min(std::max(TypeSize, size_t(1)) - 1, StrRef.size());
const unsigned numDataArgs = Args.size() - firstDataArg;

// Emit a warning if the string literal is truncated and does not contain an
// embedded null character.
if (TypeSize <= StrRef.size() &&
    StrRef.substr(0, TypeSize).find('\0') == StringRef::npos) {
  CheckFormatHandler::EmitFormatDiagnostic(
      S, inFunctionCall, Args[format_idx],
      S.PDiag(diag::warn_printf_format_string_not_null_terminated),
      FExpr->getBeginLoc(),
      /*IsStringLocation=*/true, OrigFormatExpr->getSourceRange());
  return;
}

// CHECK: empty format string?
if (StrLen == 0 && numDataArgs > 0) {
  CheckFormatHandler::EmitFormatDiagnostic(
      S, inFunctionCall, Args[format_idx],
      S.PDiag(diag::warn_empty_format_string), FExpr->getBeginLoc(),
      /*IsStringLocation*/ true, OrigFormatExpr->getSourceRange());
  return;
}

if (Type == Sema::FST_Printf || Type == Sema::FST_NSString ||
    Type == Sema::FST_FreeBSDKPrintf || Type == Sema::FST_OSLog ||
    Type == Sema::FST_OSTrace) {
  CheckPrintfHandler H(
      S, FExpr, OrigFormatExpr, Type, firstDataArg, numDataArgs,
      (Type == Sema::FST_NSString || Type == Sema::FST_OSTrace), Str,
      HasVAListArg, Args, format_idx, inFunctionCall, CallType,
      CheckedVarArgs, UncoveredArg);

  if (!analyze_format_string::ParsePrintfString(H, Str, Str + StrLen,
                                                S.getLangOpts(),
                                                S.Context.getTargetInfo(),
                                          Type == Sema::FST_FreeBSDKPrintf))
    H.DoneProcessing();
} else if (Type == Sema::FST_Scanf) {
  CheckScanfHandler H(S, FExpr, OrigFormatExpr, Type, firstDataArg,
                      numDataArgs, Str, HasVAListArg, Args, format_idx,
                      inFunctionCall, CallType, CheckedVarArgs, UncoveredArg);

  if (!analyze_format_string::ParseScanfString(H, Str, Str + StrLen,
                                               S.getLangOpts(),
                                               S.Context.getTargetInfo()))
    H.DoneProcessing();
} // TODO: handle other formats
8542}

8544bool Sema::FormatStringHasSArg(const StringLiteral *FExpr) {
// Str - The format string.  NOTE: this is NOT null-terminated!
StringRef StrRef = FExpr->getString();
const char *Str = StrRef.data();
// Account for cases where the string literal is truncated in a declaration.
const ConstantArrayType *T = Context.getAsConstantArrayType(FExpr->getType());
assert(T && "String literal not of constant array type!")((T && "String literal not of constant array type!") ?
 static_cast<void> (0) : __assert_fail ("T && \"String literal not of constant array type!\""
, "/build/llvm-toolchain-snapshot-9~svn362543/tools/clang/lib/Sema/SemaChecking.cpp"
, 8550, __PRETTY_FUNCTION__));
size_t TypeSize = T->getSize().getZExtValue();
size_t StrLen = std::min(std::max(TypeSize, size_t(1)) - 1, StrRef.size());
return analyze_format_string::ParseFormatStringHasSArg(Str, Str + StrLen,
                                                       getLangOpts(),
                                                       Context.getTargetInfo());
8556}

8558//===--- CHECK: Warn on use of wrong absolute value function. -------------===//

8560// Returns the related absolute value function that is larger, of 0 if one
8561// does not exist.
8562static unsigned getLargerAbsoluteValueFunction(unsigned AbsFunction) {
switch (AbsFunction) {
default:
  return 0;

case Builtin::BI__builtin_abs:
  return Builtin::BI__builtin_labs;
case Builtin::BI__builtin_labs:
  return Builtin::BI__builtin_llabs;
case Builtin::BI__builtin_llabs:
  return 0;

case Builtin::BI__builtin_fabsf:
  return Builtin::BI__builtin_fabs;
case Builtin::BI__builtin_fabs:
  return Builtin::BI__builtin_fabsl;
case Builtin::BI__builtin_fabsl:
  return 0;

case Builtin::BI__builtin_cabsf:
  return Builtin::BI__builtin_cabs;
case Builtin::BI__builtin_cabs:
  return Builtin::BI__builtin_cabsl;
case Builtin::BI__builtin_cabsl:
  return 0;

case Builtin::BIabs:
  return Builtin::BIlabs;
case Builtin::BIlabs:
  return Builtin::BIllabs;
case Builtin::BIllabs:
  return 0;

case Builtin::BIfabsf:
  return Builtin::BIfabs;
case Builtin::BIfabs:
  return Builtin::BIfabsl;
case Builtin::BIfabsl:
  return 0;

case Builtin::BIcabsf:
 return Builtin::BIcabs;
case Builtin::BIcabs:
  return Builtin::BIcabsl;
case Builtin::BIcabsl:
  return 0;
}
8609}

8611// Returns the argument type of the absolute value function.
8612static QualType getAbsoluteValueArgumentType(ASTContext &Context,
                                           unsigned AbsType) {
if (AbsType == 0)
  return QualType();

ASTContext::GetBuiltinTypeError Error = ASTContext::GE_None;
QualType BuiltinType = Context.GetBuiltinType(AbsType, Error);
if (Error != ASTContext::GE_None)
  return QualType();

const FunctionProtoType *FT = BuiltinType->getAs<FunctionProtoType>();
if (!FT)
  return QualType();

if (FT->getNumParams() != 1)
  return QualType();

return FT->getParamType(0);
8630}

8632// Returns the best absolute value function, or zero, based on type and
8633// current absolute value function.
8634static unsigned getBestAbsFunction(ASTContext &Context, QualType ArgType,
                                 unsigned AbsFunctionKind) {
unsigned BestKind = 0;
uint64_t ArgSize = Context.getTypeSize(ArgType);
for (unsigned Kind = AbsFunctionKind; Kind != 0;
     Kind = getLargerAbsoluteValueFunction(Kind)) {
  QualType ParamType = getAbsoluteValueArgumentType(Context, Kind);
  if (Context.getTypeSize(ParamType) >= ArgSize) {
    if (BestKind == 0)
      BestKind = Kind;
    else if (Context.hasSameType(ParamType, ArgType)) {
      BestKind = Kind;
      break;
    }
  }
}
return BestKind;
8651}

8653enum AbsoluteValueKind {
AVK_Integer,
AVK_Floating,
AVK_Complex
8657};

8659static AbsoluteValueKind getAbsoluteValueKind(QualType T) {
if (T->isIntegralOrEnumerationType())
  return AVK_Integer;
if (T->isRealFloatingType())
  return AVK_Floating;
if (T->isAnyComplexType())
  return AVK_Complex;

llvm_unreachable("Type not integer, floating, or complex")::llvm::llvm_unreachable_internal("Type not integer, floating, or complex"
, "/build/llvm-toolchain-snapshot-9~svn362543/tools/clang/lib/Sema/SemaChecking.cpp"
, 8667);
8668}

8670// Changes the absolute value function to a different type.  Preserves whether
8671// the function is a builtin.
8672static unsigned changeAbsFunction(unsigned AbsKind,
                                AbsoluteValueKind ValueKind) {
switch (ValueKind) {
case AVK_Integer:
  switch (AbsKind) {
  default:
    return 0;
  case Builtin::BI__builtin_fabsf:
  case Builtin::BI__builtin_fabs:
  case Builtin::BI__builtin_fabsl:
  case Builtin::BI__builtin_cabsf:
  case Builtin::BI__builtin_cabs:
  case Builtin::BI__builtin_cabsl:
    return Builtin::BI__builtin_abs;
  case Builtin::BIfabsf:
  case Builtin::BIfabs:
  case Builtin::BIfabsl:
  case Builtin::BIcabsf:
  case Builtin::BIcabs:
  case Builtin::BIcabsl:
    return Builtin::BIabs;
  }
case AVK_Floating:
  switch (AbsKind) {
  default:
    return 0;
  case Builtin::BI__builtin_abs:
  case Builtin::BI__builtin_labs:
  case Builtin::BI__builtin_llabs:
  case Builtin::BI__builtin_cabsf:
  case Builtin::BI__builtin_cabs:
  case Builtin::BI__builtin_cabsl:
    return Builtin::BI__builtin_fabsf;
  case Builtin::BIabs:
  case Builtin::BIlabs:
  case Builtin::BIllabs:
  case Builtin::BIcabsf:
  case Builtin::BIcabs:
  case Builtin::BIcabsl:
    return Builtin::BIfabsf;
  }
case AVK_Complex:
  switch (AbsKind) {
  default:
    return 0;
  case Builtin::BI__builtin_abs:
  case Builtin::BI__builtin_labs:
  case Builtin::BI__builtin_llabs:
  case Builtin::BI__builtin_fabsf:
  case Builtin::BI__builtin_fabs:
  case Builtin::BI__builtin_fabsl:
    return Builtin::BI__builtin_cabsf;
  case Builtin::BIabs:
  case Builtin::BIlabs:
  case Builtin::BIllabs:
  case Builtin::BIfabsf:
  case Builtin::BIfabs:
  case Builtin::BIfabsl:
    return Builtin::BIcabsf;
  }
}
llvm_unreachable("Unable to convert function")::llvm::llvm_unreachable_internal("Unable to convert function"
, "/build/llvm-toolchain-snapshot-9~svn362543/tools/clang/lib/Sema/SemaChecking.cpp"
, 8733);
8734}

8736static unsigned getAbsoluteValueFunctionKind(const FunctionDecl *FDecl) {
const IdentifierInfo *FnInfo = FDecl->getIdentifier();
if (!FnInfo)
  return 0;

switch (FDecl->getBuiltinID()) {
default:
  return 0;
case Builtin::BI__builtin_abs:
case Builtin::BI__builtin_fabs:
case Builtin::BI__builtin_fabsf:
case Builtin::BI__builtin_fabsl:
case Builtin::BI__builtin_labs:
case Builtin::BI__builtin_llabs:
case Builtin::BI__builtin_cabs:
case Builtin::BI__builtin_cabsf:
case Builtin::BI__builtin_cabsl:
case Builtin::BIabs:
case Builtin::BIlabs:
case Builtin::BIllabs:
case Builtin::BIfabs:
case Builtin::BIfabsf:
case Builtin::BIfabsl:
case Builtin::BIcabs:
case Builtin::BIcabsf:
case Builtin::BIcabsl:
  return FDecl->getBuiltinID();
}
llvm_unreachable("Unknown Builtin type")::llvm::llvm_unreachable_internal("Unknown Builtin type", "/build/llvm-toolchain-snapshot-9~svn362543/tools/clang/lib/Sema/SemaChecking.cpp"
, 8764);
8765}

8767// If the replacement is valid, emit a note with replacement function.
8768// Additionally, suggest including the proper header if not already included.
8769static void emitReplacement(Sema &S, SourceLocation Loc, SourceRange Range,
                          unsigned AbsKind, QualType ArgType) {
bool EmitHeaderHint = true;
const char *HeaderName = nullptr;
const char *FunctionName = nullptr;
if (S.getLangOpts().CPlusPlus && !ArgType->isAnyComplexType()) {
  FunctionName = "std::abs";
  if (ArgType->isIntegralOrEnumerationType()) {
    HeaderName = "cstdlib";
  } else if (ArgType->isRealFloatingType()) {
    HeaderName = "cmath";
  } else {
    llvm_unreachable("Invalid Type")::llvm::llvm_unreachable_internal("Invalid Type", "/build/llvm-toolchain-snapshot-9~svn362543/tools/clang/lib/Sema/SemaChecking.cpp"
, 8781);
  }

  // Lookup all std::abs
  if (NamespaceDecl *Std = S.getStdNamespace()) {
    LookupResult R(S, &S.Context.Idents.get("abs"), Loc, Sema::LookupAnyName);
    R.suppressDiagnostics();
    S.LookupQualifiedName(R, Std);

    for (const auto *I : R) {
      const FunctionDecl *FDecl = nullptr;
      if (const UsingShadowDecl *UsingD = dyn_cast<UsingShadowDecl>(I)) {
        FDecl = dyn_cast<FunctionDecl>(UsingD->getTargetDecl());
      } else {
        FDecl = dyn_cast<FunctionDecl>(I);
      }
      if (!FDecl)
        continue;

      // Found std::abs(), check that they are the right ones.
      if (FDecl->getNumParams() != 1)
        continue;

      // Check that the parameter type can handle the argument.
      QualType ParamType = FDecl->getParamDecl(0)->getType();
      if (getAbsoluteValueKind(ArgType) == getAbsoluteValueKind(ParamType) &&
          S.Context.getTypeSize(ArgType) <=
              S.Context.getTypeSize(ParamType)) {
        // Found a function, don't need the header hint.
        EmitHeaderHint = false;
        break;
      }
    }
  }
} else {
  FunctionName = S.Context.BuiltinInfo.getName(AbsKind);
  HeaderName = S.Context.BuiltinInfo.getHeaderName(AbsKind);

  if (HeaderName) {
    DeclarationName DN(&S.Context.Idents.get(FunctionName));
    LookupResult R(S, DN, Loc, Sema::LookupAnyName);
    R.suppressDiagnostics();
    S.LookupName(R, S.getCurScope());

    if (R.isSingleResult()) {
      FunctionDecl *FD = dyn_cast<FunctionDecl>(R.getFoundDecl());
      if (FD && FD->getBuiltinID() == AbsKind) {
        EmitHeaderHint = false;
      } else {
        return;
      }
    } else if (!R.empty()) {
      return;
    }
  }
}

S.Diag(Loc, diag::note_replace_abs_function)
    << FunctionName << FixItHint::CreateReplacement(Range, FunctionName);

if (!HeaderName)
  return;

if (!EmitHeaderHint)
  return;

S.Diag(Loc, diag::note_include_header_or_declare) << HeaderName
                                                  << FunctionName;
8849}

8851template <std::size_t StrLen>
8852static bool IsStdFunction(const FunctionDecl *FDecl,
                        const char (&Str)[StrLen]) {
if (!FDecl)
  return false;
if (!FDecl->getIdentifier() || !FDecl->getIdentifier()->isStr(Str))
  return false;
if (!FDecl->isInStdNamespace())
  return false;

return true;
8862}

8864// Warn when using the wrong abs() function.
8865void Sema::CheckAbsoluteValueFunction(const CallExpr *Call,
                                    const FunctionDecl *FDecl) {
if (Call->getNumArgs() != 1)
  return;

unsigned AbsKind = getAbsoluteValueFunctionKind(FDecl);
bool IsStdAbs = IsStdFunction(FDecl, "abs");
if (AbsKind == 0 && !IsStdAbs)
  return;

QualType ArgType = Call->getArg(0)->IgnoreParenImpCasts()->getType();
QualType ParamType = Call->getArg(0)->getType();

// Unsigned types cannot be negative.  Suggest removing the absolute value
// function call.
if (ArgType->isUnsignedIntegerType()) {
  const char *FunctionName =
      IsStdAbs ? "std::abs" : Context.BuiltinInfo.getName(AbsKind);
  Diag(Call->getExprLoc(), diag::warn_unsigned_abs) << ArgType << ParamType;
  Diag(Call->getExprLoc(), diag::note_remove_abs)
      << FunctionName
      << FixItHint::CreateRemoval(Call->getCallee()->getSourceRange());
  return;
}

// Taking the absolute value of a pointer is very suspicious, they probably
// wanted to index into an array, dereference a pointer, call a function, etc.
if (ArgType->isPointerType() || ArgType->canDecayToPointerType()) {
  unsigned DiagType = 0;
  if (ArgType->isFunctionType())
    DiagType = 1;
  else if (ArgType->isArrayType())
    DiagType = 2;

  Diag(Call->getExprLoc(), diag::warn_pointer_abs) << DiagType << ArgType;
  return;
}

// std::abs has overloads which prevent most of the absolute value problems
// from occurring.
if (IsStdAbs)
  return;

AbsoluteValueKind ArgValueKind = getAbsoluteValueKind(ArgType);
AbsoluteValueKind ParamValueKind = getAbsoluteValueKind(ParamType);

// The argument and parameter are the same kind.  Check if they are the right
// size.
if (ArgValueKind == ParamValueKind) {
  if (Context.getTypeSize(ArgType) <= Context.getTypeSize(ParamType))
    return;

  unsigned NewAbsKind = getBestAbsFunction(Context, ArgType, AbsKind);
  Diag(Call->getExprLoc(), diag::warn_abs_too_small)
      << FDecl << ArgType << ParamType;

  if (NewAbsKind == 0)
    return;

  emitReplacement(*this, Call->getExprLoc(),
                  Call->getCallee()->getSourceRange(), NewAbsKind, ArgType);
  return;
}

// ArgValueKind != ParamValueKind
// The wrong type of absolute value function was used.  Attempt to find the
// proper one.
unsigned NewAbsKind = changeAbsFunction(AbsKind, ArgValueKind);
NewAbsKind = getBestAbsFunction(Context, ArgType, NewAbsKind);
if (NewAbsKind == 0)
  return;

Diag(Call->getExprLoc(), diag::warn_wrong_absolute_value_type)
    << FDecl << ParamValueKind << ArgValueKind;

emitReplacement(*this, Call->getExprLoc(),
                Call->getCallee()->getSourceRange(), NewAbsKind, ArgType);
8942}

8944//===--- CHECK: Warn on use of std::max and unsigned zero. r---------------===//
8945void Sema::CheckMaxUnsignedZero(const CallExpr *Call,
                              const FunctionDecl *FDecl) {
if (!Call || !FDecl) return;

// Ignore template specializations and macros.
if (inTemplateInstantiation()) return;
if (Call->getExprLoc().isMacroID()) return;

// Only care about the one template argument, two function parameter std::max
if (Call->getNumArgs() != 2) return;
if (!IsStdFunction(FDecl, "max")) return;
const auto * ArgList = FDecl->getTemplateSpecializationArgs();
if (!ArgList) return;
if (ArgList->size() != 1) return;

// Check that template type argument is unsigned integer.
const auto& TA = ArgList->get(0);
if (TA.getKind() != TemplateArgument::Type) return;
QualType ArgType = TA.getAsType();
if (!ArgType->isUnsignedIntegerType()) return;

// See if either argument is a literal zero.
auto IsLiteralZeroArg = [](const Expr* E) -> bool {
  const auto *MTE = dyn_cast<MaterializeTemporaryExpr>(E);
  if (!MTE) return false;
  const auto *Num = dyn_cast<IntegerLiteral>(MTE->GetTemporaryExpr());
  if (!Num) return false;
  if (Num->getValue() != 0) return false;
  return true;
};

const Expr *FirstArg = Call->getArg(0);
const Expr *SecondArg = Call->getArg(1);
const bool IsFirstArgZero = IsLiteralZeroArg(FirstArg);
const bool IsSecondArgZero = IsLiteralZeroArg(SecondArg);

// Only warn when exactly one argument is zero.
if (IsFirstArgZero == IsSecondArgZero) return;

SourceRange FirstRange = FirstArg->getSourceRange();
SourceRange SecondRange = SecondArg->getSourceRange();

SourceRange ZeroRange = IsFirstArgZero ? FirstRange : SecondRange;

Diag(Call->getExprLoc(), diag::warn_max_unsigned_zero)
    << IsFirstArgZero << Call->getCallee()->getSourceRange() << ZeroRange;

// Deduce what parts to remove so that "std::max(0u, foo)" becomes "(foo)".
SourceRange RemovalRange;
if (IsFirstArgZero) {
  RemovalRange = SourceRange(FirstRange.getBegin(),
                             SecondRange.getBegin().getLocWithOffset(-1));
} else {
  RemovalRange = SourceRange(getLocForEndOfToken(FirstRange.getEnd()),
                             SecondRange.getEnd());
}

Diag(Call->getExprLoc(), diag::note_remove_max_call)
      << FixItHint::CreateRemoval(Call->getCallee()->getSourceRange())
      << FixItHint::CreateRemoval(RemovalRange);
9005}

9007//===--- CHECK: Standard memory functions ---------------------------------===//

9009/// Takes the expression passed to the size_t parameter of functions
9010/// such as memcmp, strncat, etc and warns if it's a comparison.
9011///
9012/// This is to catch typos like `if (memcmp(&a, &b, sizeof(a) > 0))`.
9013static bool CheckMemorySizeofForComparison(Sema &S, const Expr *E,
                                         IdentifierInfo *FnName,
                                         SourceLocation FnLoc,
                                         SourceLocation RParenLoc) {
const BinaryOperator *Size = dyn_cast<BinaryOperator>(E);
if (!Size)
  return false;

// if E is binop and op is <=>, >, <, >=, <=, ==, &&, ||:
if (!Size->isComparisonOp() && !Size->isLogicalOp())
  return false;

SourceRange SizeRange = Size->getSourceRange();
S.Diag(Size->getOperatorLoc(), diag::warn_memsize_comparison)
    << SizeRange << FnName;
S.Diag(FnLoc, diag::note_memsize_comparison_paren)
    << FnName
    << FixItHint::CreateInsertion(
           S.getLocForEndOfToken(Size->getLHS()->getEndLoc()), ")")
    << FixItHint::CreateRemoval(RParenLoc);
S.Diag(SizeRange.getBegin(), diag::note_memsize_comparison_cast_silence)
    << FixItHint::CreateInsertion(SizeRange.getBegin(), "(size_t)(")
    << FixItHint::CreateInsertion(S.getLocForEndOfToken(SizeRange.getEnd()),
                                  ")");

return true;
9039}

9041/// Determine whether the given type is or contains a dynamic class type
9042/// (e.g., whether it has a vtable).
9043static const CXXRecordDecl *getContainedDynamicClass(QualType T,
                                                   bool &IsContained) {
// Look through array types while ignoring qualifiers.
const Type *Ty = T->getBaseElementTypeUnsafe();
IsContained = false;

const CXXRecordDecl *RD = Ty->getAsCXXRecordDecl();
RD = RD ? RD->getDefinition() : nullptr;
if (!RD || RD->isInvalidDecl())
  return nullptr;

if (RD->isDynamicClass())
  return RD;

// Check all the fields.  If any bases were dynamic, the class is dynamic.
// It's impossible for a class to transitively contain itself by value, so
// infinite recursion is impossible.
for (auto *FD : RD->fields()) {
  bool SubContained;
  if (const CXXRecordDecl *ContainedRD =
          getContainedDynamicClass(FD->getType(), SubContained)) {
    IsContained = true;
    return ContainedRD;
  }
}

return nullptr;
9070}

9072static const UnaryExprOrTypeTraitExpr *getAsSizeOfExpr(const Expr *E) {
if (const auto *Unary = dyn_cast<UnaryExprOrTypeTraitExpr>(E))
  if (Unary->getKind() == UETT_SizeOf)
    return Unary;
return nullptr;
9077}

9079/// If E is a sizeof expression, returns its argument expression,
9080/// otherwise returns NULL.
9081static const Expr *getSizeOfExprArg(const Expr *E) {
if (const UnaryExprOrTypeTraitExpr *SizeOf = getAsSizeOfExpr(E))
  if (!SizeOf->isArgumentType())
    return SizeOf->getArgumentExpr()->IgnoreParenImpCasts();
return nullptr;
9086}

9088/// If E is a sizeof expression, returns its argument type.
9089static QualType getSizeOfArgType(const Expr *E) {
if (const UnaryExprOrTypeTraitExpr *SizeOf = getAsSizeOfExpr(E))
  return SizeOf->getTypeOfArgument();
return QualType();
9093}

9095namespace {

9097struct SearchNonTrivialToInitializeField
  : DefaultInitializedTypeVisitor<SearchNonTrivialToInitializeField> {
using Super =
    DefaultInitializedTypeVisitor<SearchNonTrivialToInitializeField>;

SearchNonTrivialToInitializeField(const Expr *E, Sema &S) : E(E), S(S) {}

void visitWithKind(QualType::PrimitiveDefaultInitializeKind PDIK, QualType FT,
                   SourceLocation SL) {
  if (const auto *AT = asDerived().getContext().getAsArrayType(FT)) {
    asDerived().visitArray(PDIK, AT, SL);
    return;
  }

  Super::visitWithKind(PDIK, FT, SL);
}

void visitARCStrong(QualType FT, SourceLocation SL) {
  S.DiagRuntimeBehavior(SL, E, S.PDiag(diag::note_nontrivial_field) << 1);
}
void visitARCWeak(QualType FT, SourceLocation SL) {
  S.DiagRuntimeBehavior(SL, E, S.PDiag(diag::note_nontrivial_field) << 1);
}
void visitStruct(QualType FT, SourceLocation SL) {
  for (const FieldDecl *FD : FT->castAs<RecordType>()->getDecl()->fields())
    visit(FD->getType(), FD->getLocation());
}
void visitArray(QualType::PrimitiveDefaultInitializeKind PDIK,
                const ArrayType *AT, SourceLocation SL) {
  visit(getContext().getBaseElementType(AT), SL);
}
void visitTrivial(QualType FT, SourceLocation SL) {}

static void diag(QualType RT, const Expr *E, Sema &S) {
  SearchNonTrivialToInitializeField(E, S).visitStruct(RT, SourceLocation());
}

ASTContext &getContext() { return S.getASTContext(); }

const Expr *E;
Sema &S;
9138};

9140struct SearchNonTrivialToCopyField
  : CopiedTypeVisitor<SearchNonTrivialToCopyField, false> {
using Super = CopiedTypeVisitor<SearchNonTrivialToCopyField, false>;

SearchNonTrivialToCopyField(const Expr *E, Sema &S) : E(E), S(S) {}

void visitWithKind(QualType::PrimitiveCopyKind PCK, QualType FT,
                   SourceLocation SL) {
  if (const auto *AT = asDerived().getContext().getAsArrayType(FT)) {
    asDerived().visitArray(PCK, AT, SL);
    return;
  }

  Super::visitWithKind(PCK, FT, SL);
}

void visitARCStrong(QualType FT, SourceLocation SL) {
  S.DiagRuntimeBehavior(SL, E, S.PDiag(diag::note_nontrivial_field) << 0);
}
void visitARCWeak(QualType FT, SourceLocation SL) {
  S.DiagRuntimeBehavior(SL, E, S.PDiag(diag::note_nontrivial_field) << 0);
}
void visitStruct(QualType FT, SourceLocation SL) {
  for (const FieldDecl *FD : FT->castAs<RecordType>()->getDecl()->fields())
    visit(FD->getType(), FD->getLocation());
}
void visitArray(QualType::PrimitiveCopyKind PCK, const ArrayType *AT,
                SourceLocation SL) {
  visit(getContext().getBaseElementType(AT), SL);
}
void preVisit(QualType::PrimitiveCopyKind PCK, QualType FT,
              SourceLocation SL) {}
void visitTrivial(QualType FT, SourceLocation SL) {}
void visitVolatileTrivial(QualType FT, SourceLocation SL) {}

static void diag(QualType RT, const Expr *E, Sema &S) {
  SearchNonTrivialToCopyField(E, S).visitStruct(RT, SourceLocation());
}

ASTContext &getContext() { return S.getASTContext(); }

const Expr *E;
Sema &S;
9183};

9185}

9187/// Detect if \c SizeofExpr is likely to calculate the sizeof an object.
9188static bool doesExprLikelyComputeSize(const Expr *SizeofExpr) {
SizeofExpr = SizeofExpr->IgnoreParenImpCasts();

if (const auto *BO = dyn_cast<BinaryOperator>(SizeofExpr)) {
  if (BO->getOpcode() != BO_Mul && BO->getOpcode() != BO_Add)
    return false;

  return doesExprLikelyComputeSize(BO->getLHS()) ||
         doesExprLikelyComputeSize(BO->getRHS());
}

return getAsSizeOfExpr(SizeofExpr) != nullptr;
9200}

9202/// Check if the ArgLoc originated from a macro passed to the call at CallLoc.
9203///
9204/// \code
9205///   #define MACRO 0
9206///   foo(MACRO);
9207///   foo(0);
9208/// \endcode
9209///
9210/// This should return true for the first call to foo, but not for the second
9211/// (regardless of whether foo is a macro or function).
9212static bool isArgumentExpandedFromMacro(SourceManager &SM,
                                      SourceLocation CallLoc,
                                      SourceLocation ArgLoc) {
if (!CallLoc.isMacroID())
  return SM.getFileID(CallLoc) != SM.getFileID(ArgLoc);

return SM.getFileID(SM.getImmediateMacroCallerLoc(CallLoc)) !=
       SM.getFileID(SM.getImmediateMacroCallerLoc(ArgLoc));
9220}

9222/// Diagnose cases like 'memset(buf, sizeof(buf), 0)', which should have the
9223/// last two arguments transposed.
9224static void CheckMemaccessSize(Sema &S, unsigned BId, const CallExpr *Call) {
if (BId != Builtin::BImemset && BId != Builtin::BIbzero)
  return;

const Expr *SizeArg =
  Call->getArg(BId == Builtin::BImemset ? 2 : 1)->IgnoreImpCasts();

auto isLiteralZero = [](const Expr *E) {
  return isa<IntegerLiteral>(E) && cast<IntegerLiteral>(E)->getValue() == 0;
};

// If we're memsetting or bzeroing 0 bytes, then this is likely an error.
SourceLocation CallLoc = Call->getRParenLoc();
SourceManager &SM = S.getSourceManager();
if (isLiteralZero(SizeArg) &&
    !isArgumentExpandedFromMacro(SM, CallLoc, SizeArg->getExprLoc())) {

  SourceLocation DiagLoc = SizeArg->getExprLoc();

  // Some platforms #define bzero to __builtin_memset. See if this is the
  // case, and if so, emit a better diagnostic.
  if (BId == Builtin::BIbzero ||
      (CallLoc.isMacroID() && Lexer::getImmediateMacroName(
                                  CallLoc, SM, S.getLangOpts()) == "bzero")) {
    S.Diag(DiagLoc, diag::warn_suspicious_bzero_size);
    S.Diag(DiagLoc, diag::note_suspicious_bzero_size_silence);
  } else if (!isLiteralZero(Call->getArg(1)->IgnoreImpCasts())) {
    S.Diag(DiagLoc, diag::warn_suspicious_sizeof_memset) << 0;
    S.Diag(DiagLoc, diag::note_suspicious_sizeof_memset_silence) << 0;
  }
  return;
}

// If the second argument to a memset is a sizeof expression and the third
// isn't, this is also likely an error. This should catch
// 'memset(buf, sizeof(buf), 0xff)'.
if (BId == Builtin::BImemset &&
    doesExprLikelyComputeSize(Call->getArg(1)) &&
    !doesExprLikelyComputeSize(Call->getArg(2))) {
  SourceLocation DiagLoc = Call->getArg(1)->getExprLoc();
  S.Diag(DiagLoc, diag::warn_suspicious_sizeof_memset) << 1;
  S.Diag(DiagLoc, diag::note_suspicious_sizeof_memset_silence) << 1;
  return;
}
9268}

9270/// Check for dangerous or invalid arguments to memset().
9271///
9272/// This issues warnings on known problematic, dangerous or unspecified
9273/// arguments to the standard 'memset', 'memcpy', 'memmove', and 'memcmp'
9274/// function calls.
9275///
9276/// \param Call The call expression to diagnose.
9277void Sema::CheckMemaccessArguments(const CallExpr *Call,
                                 unsigned BId,
                                 IdentifierInfo *FnName) {
assert(BId != 0)((BId != 0) ? static_cast<void> (0) : __assert_fail ("BId != 0"
, "/build/llvm-toolchain-snapshot-9~svn362543/tools/clang/lib/Sema/SemaChecking.cpp"
, 9280, __PRETTY_FUNCTION__));

// It is possible to have a non-standard definition of memset.  Validate
// we have enough arguments, and if not, abort further checking.
unsigned ExpectedNumArgs =
    (BId == Builtin::BIstrndup || BId == Builtin::BIbzero ? 2 : 3);
if (Call->getNumArgs() < ExpectedNumArgs)
  return;

unsigned LastArg = (BId == Builtin::BImemset || BId == Builtin::BIbzero ||
                    BId == Builtin::BIstrndup ? 1 : 2);
unsigned LenArg =
    (BId == Builtin::BIbzero || BId == Builtin::BIstrndup ? 1 : 2);
const Expr *LenExpr = Call->getArg(LenArg)->IgnoreParenImpCasts();

if (CheckMemorySizeofForComparison(*this, LenExpr, FnName,
                                   Call->getBeginLoc(), Call->getRParenLoc()))
  return;

// Catch cases like 'memset(buf, sizeof(buf), 0)'.
CheckMemaccessSize(*this, BId, Call);

// We have special checking when the length is a sizeof expression.
QualType SizeOfArgTy = getSizeOfArgType(LenExpr);
const Expr *SizeOfArg = getSizeOfExprArg(LenExpr);
llvm::FoldingSetNodeID SizeOfArgID;

// Although widely used, 'bzero' is not a standard function. Be more strict
// with the argument types before allowing diagnostics and only allow the
// form bzero(ptr, sizeof(...)).
QualType FirstArgTy = Call->getArg(0)->IgnoreParenImpCasts()->getType();
if (BId == Builtin::BIbzero && !FirstArgTy->getAs<PointerType>())
  return;

for (unsigned ArgIdx = 0; ArgIdx != LastArg; ++ArgIdx) {
  const Expr *Dest = Call->getArg(ArgIdx)->IgnoreParenImpCasts();
  SourceRange ArgRange = Call->getArg(ArgIdx)->getSourceRange();

  QualType DestTy = Dest->getType();
  QualType PointeeTy;
  if (const PointerType *DestPtrTy = DestTy->getAs<PointerType>()) {
    PointeeTy = DestPtrTy->getPointeeType();

    // Never warn about void type pointers. This can be used to suppress
    // false positives.
    if (PointeeTy->isVoidType())
      continue;

    // Catch "memset(p, 0, sizeof(p))" -- needs to be sizeof(*p). Do this by
    // actually comparing the expressions for equality. Because computing the
    // expression IDs can be expensive, we only do this if the diagnostic is
    // enabled.
    if (SizeOfArg &&
        !Diags.isIgnored(diag::warn_sizeof_pointer_expr_memaccess,
                         SizeOfArg->getExprLoc())) {
      // We only compute IDs for expressions if the warning is enabled, and
      // cache the sizeof arg's ID.
      if (SizeOfArgID == llvm::FoldingSetNodeID())
        SizeOfArg->Profile(SizeOfArgID, Context, true);
      llvm::FoldingSetNodeID DestID;
      Dest->Profile(DestID, Context, true);
      if (DestID == SizeOfArgID) {
        // TODO: For strncpy() and friends, this could suggest sizeof(dst)
        //       over sizeof(src) as well.
        unsigned ActionIdx = 0; // Default is to suggest dereferencing.
        StringRef ReadableName = FnName->getName();

        if (const UnaryOperator *UnaryOp = dyn_cast<UnaryOperator>(Dest))
          if (UnaryOp->getOpcode() == UO_AddrOf)
            ActionIdx = 1; // If its an address-of operator, just remove it.
        if (!PointeeTy->isIncompleteType() &&
            (Context.getTypeSize(PointeeTy) == Context.getCharWidth()))
          ActionIdx = 2; // If the pointee's size is sizeof(char),
                         // suggest an explicit length.

        // If the function is defined as a builtin macro, do not show macro
        // expansion.
        SourceLocation SL = SizeOfArg->getExprLoc();
        SourceRange DSR = Dest->getSourceRange();
        SourceRange SSR = SizeOfArg->getSourceRange();
        SourceManager &SM = getSourceManager();

        if (SM.isMacroArgExpansion(SL)) {
          ReadableName = Lexer::getImmediateMacroName(SL, SM, LangOpts);
          SL = SM.getSpellingLoc(SL);
          DSR = SourceRange(SM.getSpellingLoc(DSR.getBegin()),
                           SM.getSpellingLoc(DSR.getEnd()));
          SSR = SourceRange(SM.getSpellingLoc(SSR.getBegin()),
                           SM.getSpellingLoc(SSR.getEnd()));
        }

        DiagRuntimeBehavior(SL, SizeOfArg,
                            PDiag(diag::warn_sizeof_pointer_expr_memaccess)
                              << ReadableName
                              << PointeeTy
                              << DestTy
                              << DSR
                              << SSR);
        DiagRuntimeBehavior(SL, SizeOfArg,
                       PDiag(diag::warn_sizeof_pointer_expr_memaccess_note)
                              << ActionIdx
                              << SSR);

        break;
      }
    }

    // Also check for cases where the sizeof argument is the exact same
    // type as the memory argument, and where it points to a user-defined
    // record type.
    if (SizeOfArgTy != QualType()) {
      if (PointeeTy->isRecordType() &&
          Context.typesAreCompatible(SizeOfArgTy, DestTy)) {
        DiagRuntimeBehavior(LenExpr->getExprLoc(), Dest,
                            PDiag(diag::warn_sizeof_pointer_type_memaccess)
                              << FnName << SizeOfArgTy << ArgIdx
                              << PointeeTy << Dest->getSourceRange()
                              << LenExpr->getSourceRange());
        break;
      }
    }
  } else if (DestTy->isArrayType()) {
    PointeeTy = DestTy;
  }

  if (PointeeTy == QualType())
    continue;

  // Always complain about dynamic classes.
  bool IsContained;
  if (const CXXRecordDecl *ContainedRD =
          getContainedDynamicClass(PointeeTy, IsContained)) {

    unsigned OperationType = 0;
    const bool IsCmp = BId == Builtin::BImemcmp || BId == Builtin::BIbcmp;
    // "overwritten" if we're warning about the destination for any call
    // but memcmp; otherwise a verb appropriate to the call.
    if (ArgIdx != 0 || IsCmp) {
      if (BId == Builtin::BImemcpy)
        OperationType = 1;
      else if(BId == Builtin::BImemmove)
        OperationType = 2;
      else if (IsCmp)
        OperationType = 3;
    }

    DiagRuntimeBehavior(Dest->getExprLoc(), Dest,
                        PDiag(diag::warn_dyn_class_memaccess)
                            << (IsCmp ? ArgIdx + 2 : ArgIdx) << FnName
                            << IsContained << ContainedRD << OperationType
                            << Call->getCallee()->getSourceRange());
  } else if (PointeeTy.hasNonTrivialObjCLifetime() &&
           BId != Builtin::BImemset)
    DiagRuntimeBehavior(
      Dest->getExprLoc(), Dest,
      PDiag(diag::warn_arc_object_memaccess)
        << ArgIdx << FnName << PointeeTy
        << Call->getCallee()->getSourceRange());
  else if (const auto *RT = PointeeTy->getAs<RecordType>()) {
    if ((BId == Builtin::BImemset || BId == Builtin::BIbzero) &&
        RT->getDecl()->isNonTrivialToPrimitiveDefaultInitialize()) {
      DiagRuntimeBehavior(Dest->getExprLoc(), Dest,
                          PDiag(diag::warn_cstruct_memaccess)
                              << ArgIdx << FnName << PointeeTy << 0);
      SearchNonTrivialToInitializeField::diag(PointeeTy, Dest, *this);
    } else if ((BId == Builtin::BImemcpy || BId == Builtin::BImemmove) &&
               RT->getDecl()->isNonTrivialToPrimitiveCopy()) {
      DiagRuntimeBehavior(Dest->getExprLoc(), Dest,
                          PDiag(diag::warn_cstruct_memaccess)
                              << ArgIdx << FnName << PointeeTy << 1);
      SearchNonTrivialToCopyField::diag(PointeeTy, Dest, *this);
    } else {
      continue;
    }
  } else
    continue;

  DiagRuntimeBehavior(
    Dest->getExprLoc(), Dest,
    PDiag(diag::note_bad_memaccess_silence)
      << FixItHint::CreateInsertion(ArgRange.getBegin(), "(void*)"));
  break;
}
9463}

9465// A little helper routine: ignore addition and subtraction of integer literals.
9466// This intentionally does not ignore all integer constant expressions because
9467// we don't want to remove sizeof().
9468static const Expr *ignoreLiteralAdditions(const Expr *Ex, ASTContext &Ctx) {
Ex = Ex->IgnoreParenCasts();

while (true) {
  const BinaryOperator * BO = dyn_cast<BinaryOperator>(Ex);
  if (!BO || !BO->isAdditiveOp())
    break;

  const Expr *RHS = BO->getRHS()->IgnoreParenCasts();
  const Expr *LHS = BO->getLHS()->IgnoreParenCasts();

  if (isa<IntegerLiteral>(RHS))
    Ex = LHS;
  else if (isa<IntegerLiteral>(LHS))
    Ex = RHS;
  else
    break;
}

return Ex;
9488}

9490static bool isConstantSizeArrayWithMoreThanOneElement(QualType Ty,
                                                    ASTContext &Context) {
// Only handle constant-sized or VLAs, but not flexible members.
if (const ConstantArrayType *CAT = Context.getAsConstantArrayType(Ty)) {
  // Only issue the FIXIT for arrays of size > 1.
  if (CAT->getSize().getSExtValue() <= 1)
    return false;
} else if (!Ty->isVariableArrayType()) {
  return false;
}
return true;
9501}

9503// Warn if the user has made the 'size' argument to strlcpy or strlcat
9504// be the size of the source, instead of the destination.
9505void Sema::CheckStrlcpycatArguments(const CallExpr *Call,
                                  IdentifierInfo *FnName) {

// Don't crash if the user has the wrong number of arguments
unsigned NumArgs = Call->getNumArgs();
if ((NumArgs != 3) && (NumArgs != 4))
  return;

const Expr *SrcArg = ignoreLiteralAdditions(Call->getArg(1), Context);
const Expr *SizeArg = ignoreLiteralAdditions(Call->getArg(2), Context);
const Expr *CompareWithSrc = nullptr;

if (CheckMemorySizeofForComparison(*this, SizeArg, FnName,
                                   Call->getBeginLoc(), Call->getRParenLoc()))
  return;

// Look for 'strlcpy(dst, x, sizeof(x))'
if (const Expr *Ex = getSizeOfExprArg(SizeArg))
  CompareWithSrc = Ex;
else {
  // Look for 'strlcpy(dst, x, strlen(x))'
  if (const CallExpr *SizeCall = dyn_cast<CallExpr>(SizeArg)) {
    if (SizeCall->getBuiltinCallee() == Builtin::BIstrlen &&
        SizeCall->getNumArgs() == 1)
      CompareWithSrc = ignoreLiteralAdditions(SizeCall->getArg(0), Context);
  }
}

if (!CompareWithSrc)
  return;

// Determine if the argument to sizeof/strlen is equal to the source
// argument.  In principle there's all kinds of things you could do
// here, for instance creating an == expression and evaluating it with
// EvaluateAsBooleanCondition, but this uses a more direct technique:
const DeclRefExpr *SrcArgDRE = dyn_cast<DeclRefExpr>(SrcArg);
if (!SrcArgDRE)
  return;

const DeclRefExpr *CompareWithSrcDRE = dyn_cast<DeclRefExpr>(CompareWithSrc);
if (!CompareWithSrcDRE ||
    SrcArgDRE->getDecl() != CompareWithSrcDRE->getDecl())
  return;

const Expr *OriginalSizeArg = Call->getArg(2);
Diag(CompareWithSrcDRE->getBeginLoc(), diag::warn_strlcpycat_wrong_size)
    << OriginalSizeArg->getSourceRange() << FnName;

// Output a FIXIT hint if the destination is an array (rather than a
// pointer to an array).  This could be enhanced to handle some
// pointers if we know the actual size, like if DstArg is 'array+2'
// we could say 'sizeof(array)-2'.
const Expr *DstArg = Call->getArg(0)->IgnoreParenImpCasts();
if (!isConstantSizeArrayWithMoreThanOneElement(DstArg->getType(), Context))
  return;

SmallString<128> sizeString;
llvm::raw_svector_ostream OS(sizeString);
OS << "sizeof(";
DstArg->printPretty(OS, nullptr, getPrintingPolicy());
OS << ")";

Diag(OriginalSizeArg->getBeginLoc(), diag::note_strlcpycat_wrong_size)
    << FixItHint::CreateReplacement(OriginalSizeArg->getSourceRange(),
                                    OS.str());
9570}

9572/// Check if two expressions refer to the same declaration.
9573static bool referToTheSameDecl(const Expr *E1, const Expr *E2) {
if (const DeclRefExpr *D1 = dyn_cast_or_null<DeclRefExpr>(E1))
  if (const DeclRefExpr *D2 = dyn_cast_or_null<DeclRefExpr>(E2))
    return D1->getDecl() == D2->getDecl();
return false;
9578}

9580static const Expr *getStrlenExprArg(const Expr *E) {
if (const CallExpr *CE = dyn_cast<CallExpr>(E)) {
  const FunctionDecl *FD = CE->getDirectCallee();
  if (!FD || FD->getMemoryFunctionKind() != Builtin::BIstrlen)
    return nullptr;
  return CE->getArg(0)->IgnoreParenCasts();
}
return nullptr;
9588}

9590// Warn on anti-patterns as the 'size' argument to strncat.
9591// The correct size argument should look like following:
9592//   strncat(dst, src, sizeof(dst) - strlen(dest) - 1);
9593void Sema::CheckStrncatArguments(const CallExpr *CE,
                               IdentifierInfo *FnName) {
// Don't crash if the user has the wrong number of arguments.
if (CE->getNumArgs() < 3)
  return;
const Expr *DstArg = CE->getArg(0)->IgnoreParenCasts();
const Expr *SrcArg = CE->getArg(1)->IgnoreParenCasts();
const Expr *LenArg = CE->getArg(2)->IgnoreParenCasts();

if (CheckMemorySizeofForComparison(*this, LenArg, FnName, CE->getBeginLoc(),
                                   CE->getRParenLoc()))
  return;

// Identify common expressions, which are wrongly used as the size argument
// to strncat and may lead to buffer overflows.
unsigned PatternType = 0;
if (const Expr *SizeOfArg = getSizeOfExprArg(LenArg)) {
  // - sizeof(dst)
  if (referToTheSameDecl(SizeOfArg, DstArg))
    PatternType = 1;
  // - sizeof(src)
  else if (referToTheSameDecl(SizeOfArg, SrcArg))
    PatternType = 2;
} else if (const BinaryOperator *BE = dyn_cast<BinaryOperator>(LenArg)) {
  if (BE->getOpcode() == BO_Sub) {
    const Expr *L = BE->getLHS()->IgnoreParenCasts();
    const Expr *R = BE->getRHS()->IgnoreParenCasts();
    // - sizeof(dst) - strlen(dst)
    if (referToTheSameDecl(DstArg, getSizeOfExprArg(L)) &&
        referToTheSameDecl(DstArg, getStrlenExprArg(R)))
      PatternType = 1;
    // - sizeof(src) - (anything)
    else if (referToTheSameDecl(SrcArg, getSizeOfExprArg(L)))
      PatternType = 2;
  }
}

if (PatternType == 0)
  return;

// Generate the diagnostic.
SourceLocation SL = LenArg->getBeginLoc();
SourceRange SR = LenArg->getSourceRange();
SourceManager &SM = getSourceManager();

// If the function is defined as a builtin macro, do not show macro expansion.
if (SM.isMacroArgExpansion(SL)) {
  SL = SM.getSpellingLoc(SL);
  SR = SourceRange(SM.getSpellingLoc(SR.getBegin()),
                   SM.getSpellingLoc(SR.getEnd()));
}

// Check if the destination is an array (rather than a pointer to an array).
QualType DstTy = DstArg->getType();
bool isKnownSizeArray = isConstantSizeArrayWithMoreThanOneElement(DstTy,
                                                                  Context);
if (!isKnownSizeArray) {
  if (PatternType == 1)
    Diag(SL, diag::warn_strncat_wrong_size) << SR;
  else
    Diag(SL, diag::warn_strncat_src_size) << SR;
  return;
}

if (PatternType == 1)
  Diag(SL, diag::warn_strncat_large_size) << SR;
else
  Diag(SL, diag::warn_strncat_src_size) << SR;

SmallString<128> sizeString;
llvm::raw_svector_ostream OS(sizeString);
OS << "sizeof(";
DstArg->printPretty(OS, nullptr, getPrintingPolicy());
OS << ") - ";
OS << "strlen(";
DstArg->printPretty(OS, nullptr, getPrintingPolicy());
OS << ") - 1";

Diag(SL, diag::note_strncat_wrong_size)
  << FixItHint::CreateReplacement(SR, OS.str());
9673}

9675void
9676Sema::CheckReturnValExpr(Expr *RetValExp, QualType lhsType,
                       SourceLocation ReturnLoc,
                       bool isObjCMethod,
                       const AttrVec *Attrs,
                       const FunctionDecl *FD) {
// Check if the return value is null but should not be.
if (((Attrs && hasSpecificAttr<ReturnsNonNullAttr>(*Attrs)) ||
     (!isObjCMethod && isNonNullType(Context, lhsType))) &&
    CheckNonNullExpr(*this, RetValExp))
  Diag(ReturnLoc, diag::warn_null_ret)
    << (isObjCMethod ? 1 : 0) << RetValExp->getSourceRange();

// C++11 [basic.stc.dynamic.allocation]p4:
//   If an allocation function declared with a non-throwing
//   exception-specification fails to allocate storage, it shall return
//   a null pointer. Any other allocation function that fails to allocate
//   storage shall indicate failure only by throwing an exception [...]
if (FD) {
  OverloadedOperatorKind Op = FD->getOverloadedOperator();
  if (Op == OO_New || Op == OO_Array_New) {
    const FunctionProtoType *Proto
      = FD->getType()->castAs<FunctionProtoType>();
    if (!Proto->isNothrow(/*ResultIfDependent*/true) &&
        CheckNonNullExpr(*this, RetValExp))
      Diag(ReturnLoc, diag::warn_operator_new_returns_null)
        << FD << getLangOpts().CPlusPlus11;
  }
}
9704}

9706//===--- CHECK: Floating-Point comparisons (-Wfloat-equal) ---------------===//

9708/// Check for comparisons of floating point operands using != and ==.
9709/// Issue a warning if these are no self-comparisons, as they are not likely
9710/// to do what the programmer intended.
9711void Sema::CheckFloatComparison(SourceLocation Loc, Expr* LHS, Expr *RHS) {
Expr* LeftExprSansParen = LHS->IgnoreParenImpCasts();
Expr* RightExprSansParen = RHS->IgnoreParenImpCasts();

// Special case: check for x == x (which is OK).
// Do not emit warnings for such cases.
if (DeclRefExpr* DRL = dyn_cast<DeclRefExpr>(LeftExprSansParen))
  if (DeclRefExpr* DRR = dyn_cast<DeclRefExpr>(RightExprSansParen))
    if (DRL->getDecl() == DRR->getDecl())
      return;

// Special case: check for comparisons against literals that can be exactly
//  represented by APFloat.  In such cases, do not emit a warning.  This
//  is a heuristic: often comparison against such literals are used to
//  detect if a value in a variable has not changed.  This clearly can
//  lead to false negatives.
if (FloatingLiteral* FLL = dyn_cast<FloatingLiteral>(LeftExprSansParen)) {
  if (FLL->isExact())
    return;
} else
  if (FloatingLiteral* FLR = dyn_cast<FloatingLiteral>(RightExprSansParen))
    if (FLR->isExact())
      return;

// Check for comparisons with builtin types.
if (CallExpr* CL = dyn_cast<CallExpr>(LeftExprSansParen))
  if (CL->getBuiltinCallee())
    return;

if (CallExpr* CR = dyn_cast<CallExpr>(RightExprSansParen))
  if (CR->getBuiltinCallee())
    return;

// Emit the diagnostic.
Diag(Loc, diag::warn_floatingpoint_eq)
  << LHS->getSourceRange() << RHS->getSourceRange();
9747}

9749//===--- CHECK: Integer mixed-sign comparisons (-Wsign-compare) --------===//
9750//===--- CHECK: Lossy implicit conversions (-Wconversion) --------------===//

9752namespace {

9754/// Structure recording the 'active' range of an integer-valued
9755/// expression.
9756struct IntRange {
/// The number of bits active in the int.
unsigned Width;

/// True if the int is known not to have negative values.
bool NonNegative;

IntRange(unsigned Width, bool NonNegative)
    : Width(Width), NonNegative(NonNegative) {}

/// Returns the range of the bool type.
static IntRange forBoolType() {
  return IntRange(1, true);
}

/// Returns the range of an opaque value of the given integral type.
static IntRange forValueOfType(ASTContext &C, QualType T) {
  return forValueOfCanonicalType(C,
                        T->getCanonicalTypeInternal().getTypePtr());
}

/// Returns the range of an opaque value of a canonical integral type.
static IntRange forValueOfCanonicalType(ASTContext &C, const Type *T) {
  assert(T->isCanonicalUnqualified())((T->isCanonicalUnqualified()) ? static_cast<void> (
0) : __assert_fail ("T->isCanonicalUnqualified()", "/build/llvm-toolchain-snapshot-9~svn362543/tools/clang/lib/Sema/SemaChecking.cpp"
, 9779, __PRETTY_FUNCTION__));

  if (const VectorType *VT = dyn_cast<VectorType>(T))
    T = VT->getElementType().getTypePtr();
  if (const ComplexType *CT = dyn_cast<ComplexType>(T))
    T = CT->getElementType().getTypePtr();
  if (const AtomicType *AT = dyn_cast<AtomicType>(T))
    T = AT->getValueType().getTypePtr();

  if (!C.getLangOpts().CPlusPlus) {
    // For enum types in C code, use the underlying datatype.
    if (const EnumType *ET = dyn_cast<EnumType>(T))
      T = ET->getDecl()->getIntegerType().getDesugaredType(C).getTypePtr();
  } else if (const EnumType *ET = dyn_cast<EnumType>(T)) {
    // For enum types in C++, use the known bit width of the enumerators.
    EnumDecl *Enum = ET->getDecl();
    // In C++11, enums can have a fixed underlying type. Use this type to
    // compute the range.
    if (Enum->isFixed()) {
      return IntRange(C.getIntWidth(QualType(T, 0)),
                      !ET->isSignedIntegerOrEnumerationType());
    }

    unsigned NumPositive = Enum->getNumPositiveBits();
    unsigned NumNegative = Enum->getNumNegativeBits();

    if (NumNegative == 0)
      return IntRange(NumPositive, true/*NonNegative*/);
    else
      return IntRange(std::max(NumPositive + 1, NumNegative),
                      false/*NonNegative*/);
  }

  const BuiltinType *BT = cast<BuiltinType>(T);
  assert(BT->isInteger())((BT->isInteger()) ? static_cast<void> (0) : __assert_fail
 ("BT->isInteger()", "/build/llvm-toolchain-snapshot-9~svn362543/tools/clang/lib/Sema/SemaChecking.cpp"
, 9813, __PRETTY_FUNCTION__));

  return IntRange(C.getIntWidth(QualType(T, 0)), BT->isUnsignedInteger());
}

/// Returns the "target" range of a canonical integral type, i.e.
/// the range of values expressible in the type.
///
/// This matches forValueOfCanonicalType except that enums have the
/// full range of their type, not the range of their enumerators.
static IntRange forTargetOfCanonicalType(ASTContext &C, const Type *T) {
  assert(T->isCanonicalUnqualified())((T->isCanonicalUnqualified()) ? static_cast<void> (
0) : __assert_fail ("T->isCanonicalUnqualified()", "/build/llvm-toolchain-snapshot-9~svn362543/tools/clang/lib/Sema/SemaChecking.cpp"
, 9824, __PRETTY_FUNCTION__));

  if (const VectorType *VT = dyn_cast<VectorType>(T))
    T = VT->getElementType().getTypePtr();
  if (const ComplexType *CT = dyn_cast<ComplexType>(T))
    T = CT->getElementType().getTypePtr();
  if (const AtomicType *AT = dyn_cast<AtomicType>(T))
    T = AT->getValueType().getTypePtr();
  if (const EnumType *ET = dyn_cast<EnumType>(T))
    T = C.getCanonicalType(ET->getDecl()->getIntegerType()).getTypePtr();

  const BuiltinType *BT = cast<BuiltinType>(T);
  assert(BT->isInteger())((BT->isInteger()) ? static_cast<void> (0) : __assert_fail
 ("BT->isInteger()", "/build/llvm-toolchain-snapshot-9~svn362543/tools/clang/lib/Sema/SemaChecking.cpp"
, 9836, __PRETTY_FUNCTION__));

  return IntRange(C.getIntWidth(QualType(T, 0)), BT->isUnsignedInteger());
}

/// Returns the supremum of two ranges: i.e. their conservative merge.
static IntRange join(IntRange L, IntRange R) {
  return IntRange(std::max(L.Width, R.Width),
                  L.NonNegative && R.NonNegative);
}

/// Returns the infinum of two ranges: i.e. their aggressive merge.
static IntRange meet(IntRange L, IntRange R) {
  return IntRange(std::min(L.Width, R.Width),
                  L.NonNegative || R.NonNegative);
}
9852};

9854} // namespace

9856static IntRange GetValueRange(ASTContext &C, llvm::APSInt &value,
                            unsigned MaxWidth) {
if (value.isSigned() && value.isNegative())
  return IntRange(value.getMinSignedBits(), false);

if (value.getBitWidth() > MaxWidth)
  value = value.trunc(MaxWidth);

// isNonNegative() just checks the sign bit without considering
// signedness.
return IntRange(value.getActiveBits(), true);
9867}

9869static IntRange GetValueRange(ASTContext &C, APValue &result, QualType Ty,
                            unsigned MaxWidth) {
if (result.isInt())
  return GetValueRange(C, result.getInt(), MaxWidth);

if (result.isVector()) {
  IntRange R = GetValueRange(C, result.getVectorElt(0), Ty, MaxWidth);
  for (unsigned i = 1, e = result.getVectorLength(); i != e; ++i) {
    IntRange El = GetValueRange(C, result.getVectorElt(i), Ty, MaxWidth);
    R = IntRange::join(R, El);
  }
  return R;
}

if (result.isComplexInt()) {
  IntRange R = GetValueRange(C, result.getComplexIntReal(), MaxWidth);
  IntRange I = GetValueRange(C, result.getComplexIntImag(), MaxWidth);
  return IntRange::join(R, I);
}

// This can happen with lossless casts to intptr_t of "based" lvalues.
// Assume it might use arbitrary bits.
// FIXME: The only reason we need to pass the type in here is to get
// the sign right on this one case.  It would be nice if APValue
// preserved this.
assert(result.isLValue() || result.isAddrLabelDiff())((result.isLValue() || result.isAddrLabelDiff()) ? static_cast
<void> (0) : __assert_fail ("result.isLValue() || result.isAddrLabelDiff()"
, "/build/llvm-toolchain-snapshot-9~svn362543/tools/clang/lib/Sema/SemaChecking.cpp"
, 9894, __PRETTY_FUNCTION__));
return IntRange(MaxWidth, Ty->isUnsignedIntegerOrEnumerationType());
9896}

9898static QualType GetExprType(const Expr *E) {
QualType Ty = E->getType();
if (const AtomicType *AtomicRHS = Ty->getAs<AtomicType>())
  Ty = AtomicRHS->getValueType();
return Ty;
9903}

9905/// Pseudo-evaluate the given integer expression, estimating the
9906/// range of values it might take.
9907///
9908/// \param MaxWidth - the width to which the value will be truncated
9909static IntRange GetExprRange(ASTContext &C, const Expr *E, unsigned MaxWidth) {
E = E->IgnoreParens();

// Try a full evaluation first.
Expr::EvalResult result;
if (E->EvaluateAsRValue(result, C))
  return GetValueRange(C, result.Val, GetExprType(E), MaxWidth);

// I think we only want to look through implicit casts here; if the
// user has an explicit widening cast, we should treat the value as
// being of the new, wider type.
if (const auto *CE = dyn_cast<ImplicitCastExpr>(E)) {
  if (CE->getCastKind() == CK_NoOp || CE->getCastKind() == CK_LValueToRValue)
    return GetExprRange(C, CE->getSubExpr(), MaxWidth);

  IntRange OutputTypeRange = IntRange::forValueOfType(C, GetExprType(CE));

  bool isIntegerCast = CE->getCastKind() == CK_IntegralCast ||
                       CE->getCastKind() == CK_BooleanToSignedIntegral;

  // Assume that non-integer casts can span the full range of the type.
  if (!isIntegerCast)
    return OutputTypeRange;

  IntRange SubRange
    = GetExprRange(C, CE->getSubExpr(),
                   std::min(MaxWidth, OutputTypeRange.Width));

  // Bail out if the subexpr's range is as wide as the cast type.
  if (SubRange.Width >= OutputTypeRange.Width)
    return OutputTypeRange;

  // Otherwise, we take the smaller width, and we're non-negative if
  // either the output type or the subexpr is.
  return IntRange(SubRange.Width,
                  SubRange.NonNegative || OutputTypeRange.NonNegative);
}

if (const auto *CO = dyn_cast<ConditionalOperator>(E)) {
  // If we can fold the condition, just take that operand.
  bool CondResult;
  if (CO->getCond()->EvaluateAsBooleanCondition(CondResult, C))
    return GetExprRange(C, CondResult ? CO->getTrueExpr()
                                      : CO->getFalseExpr(),
                        MaxWidth);

  // Otherwise, conservatively merge.
  IntRange L = GetExprRange(C, CO->getTrueExpr(), MaxWidth);
  IntRange R = GetExprRange(C, CO->getFalseExpr(), MaxWidth);
  return IntRange::join(L, R);
}

if (const auto *BO = dyn_cast<BinaryOperator>(E)) {
  switch (BO->getOpcode()) {
  case BO_Cmp:
    llvm_unreachable("builtin <=> should have class type")::llvm::llvm_unreachable_internal("builtin <=> should have class type"
, "/build/llvm-toolchain-snapshot-9~svn362543/tools/clang/lib/Sema/SemaChecking.cpp"
, 9964);

  // Boolean-valued operations are single-bit and positive.
  case BO_LAnd:
  case BO_LOr:
  case BO_LT:
  case BO_GT:
  case BO_LE:
  case BO_GE:
  case BO_EQ:
  case BO_NE:
    return IntRange::forBoolType();

  // The type of the assignments is the type of the LHS, so the RHS
  // is not necessarily the same type.
  case BO_MulAssign:
  case BO_DivAssign:
  case BO_RemAssign:
  case BO_AddAssign:
  case BO_SubAssign:
  case BO_XorAssign:
  case BO_OrAssign:
    // TODO: bitfields?
    return IntRange::forValueOfType(C, GetExprType(E));

  // Simple assignments just pass through the RHS, which will have
  // been coerced to the LHS type.
  case BO_Assign:
    // TODO: bitfields?
    return GetExprRange(C, BO->getRHS(), MaxWidth);

  // Operations with opaque sources are black-listed.
  case BO_PtrMemD:
  case BO_PtrMemI:
    return IntRange::forValueOfType(C, GetExprType(E));

  // Bitwise-and uses the *infinum* of the two source ranges.
  case BO_And:
  case BO_AndAssign:
    return IntRange::meet(GetExprRange(C, BO->getLHS(), MaxWidth),
                          GetExprRange(C, BO->getRHS(), MaxWidth));

  // Left shift gets black-listed based on a judgement call.
  case BO_Shl:
    // ...except that we want to treat '1 << (blah)' as logically
    // positive.  It's an important idiom.
    if (IntegerLiteral *I
          = dyn_cast<IntegerLiteral>(BO->getLHS()->IgnoreParenCasts())) {
      if (I->getValue() == 1) {
        IntRange R = IntRange::forValueOfType(C, GetExprType(E));
        return IntRange(R.Width, /*NonNegative*/ true);
      }
    }
    LLVM_FALLTHROUGH[[clang::fallthrough]];

  case BO_ShlAssign:
    return IntRange::forValueOfType(C, GetExprType(E));

  // Right shift by a constant can narrow its left argument.
  case BO_Shr:
  case BO_ShrAssign: {
    IntRange L = GetExprRange(C, BO->getLHS(), MaxWidth);

    // If the shift amount is a positive constant, drop the width by
    // that much.
    llvm::APSInt shift;
    if (BO->getRHS()->isIntegerConstantExpr(shift, C) &&
        shift.isNonNegative()) {
      unsigned zext = shift.getZExtValue();
      if (zext >= L.Width)
        L.Width = (L.NonNegative ? 0 : 1);
      else
        L.Width -= zext;
    }

    return L;
  }

  // Comma acts as its right operand.
  case BO_Comma:
    return GetExprRange(C, BO->getRHS(), MaxWidth);

  // Black-list pointer subtractions.
  case BO_Sub:
    if (BO->getLHS()->getType()->isPointerType())
      return IntRange::forValueOfType(C, GetExprType(E));
    break;

  // The width of a division result is mostly determined by the size
  // of the LHS.
  case BO_Div: {
    // Don't 'pre-truncate' the operands.
    unsigned opWidth = C.getIntWidth(GetExprType(E));
    IntRange L = GetExprRange(C, BO->getLHS(), opWidth);

    // If the divisor is constant, use that.
    llvm::APSInt divisor;
    if (BO->getRHS()->isIntegerConstantExpr(divisor, C)) {
      unsigned log2 = divisor.logBase2(); // floor(log_2(divisor))
      if (log2 >= L.Width)
        L.Width = (L.NonNegative ? 0 : 1);
      else
        L.Width = std::min(L.Width - log2, MaxWidth);
      return L;
    }

    // Otherwise, just use the LHS's width.
    IntRange R = GetExprRange(C, BO->getRHS(), opWidth);
    return IntRange(L.Width, L.NonNegative && R.NonNegative);
  }

  // The result of a remainder can't be larger than the result of
  // either side.
  case BO_Rem: {
    // Don't 'pre-truncate' the operands.
    unsigned opWidth = C.getIntWidth(GetExprType(E));
    IntRange L = GetExprRange(C, BO->getLHS(), opWidth);
    IntRange R = GetExprRange(C, BO->getRHS(), opWidth);

    IntRange meet = IntRange::meet(L, R);
    meet.Width = std::min(meet.Width, MaxWidth);
    return meet;
  }

  // The default behavior is okay for these.
  case BO_Mul:
  case BO_Add:
  case BO_Xor:
  case BO_Or:
    break;
  }

  // The default case is to treat the operation as if it were closed
  // on the narrowest type that encompasses both operands.
  IntRange L = GetExprRange(C, BO->getLHS(), MaxWidth);
  IntRange R = GetExprRange(C, BO->getRHS(), MaxWidth);
  return IntRange::join(L, R);
}

if (const auto *UO = dyn_cast<UnaryOperator>(E)) {
  switch (UO->getOpcode()) {
  // Boolean-valued operations are white-listed.
  case UO_LNot:
    return IntRange::forBoolType();

  // Operations with opaque sources are black-listed.
  case UO_Deref:
  case UO_AddrOf: // should be impossible
    return IntRange::forValueOfType(C, GetExprType(E));

  default:
    return GetExprRange(C, UO->getSubExpr(), MaxWidth);
  }
}

if (const auto *OVE = dyn_cast<OpaqueValueExpr>(E))
  return GetExprRange(C, OVE->getSourceExpr(), MaxWidth);

if (const auto *BitField = E->getSourceBitField())
  return IntRange(BitField->getBitWidthValue(C),
                  BitField->getType()->isUnsignedIntegerOrEnumerationType());

return IntRange::forValueOfType(C, GetExprType(E));
10127}

10129static IntRange GetExprRange(ASTContext &C, const Expr *E) {
return GetExprRange(C, E, C.getIntWidth(GetExprType(E)));
10131}

10133/// Checks whether the given value, which currently has the given
10134/// source semantics, has the same value when coerced through the
10135/// target semantics.
10136static bool IsSameFloatAfterCast(const llvm::APFloat &value,
                               const llvm::fltSemantics &Src,
                               const llvm::fltSemantics &Tgt) {
llvm::APFloat truncated = value;

bool ignored;
truncated.convert(Src, llvm::APFloat::rmNearestTiesToEven, &ignored);
truncated.convert(Tgt, llvm::APFloat::rmNearestTiesToEven, &ignored);

return truncated.bitwiseIsEqual(value);
10146}

10148/// Checks whether the given value, which currently has the given
10149/// source semantics, has the same value when coerced through the
10150/// target semantics.
10151///
10152/// The value might be a vector of floats (or a complex number).
10153static bool IsSameFloatAfterCast(const APValue &value,
                               const llvm::fltSemantics &Src,
                               const llvm::fltSemantics &Tgt) {
if (value.isFloat())
  return IsSameFloatAfterCast(value.getFloat(), Src, Tgt);

if (value.isVector()) {
  for (unsigned i = 0, e = value.getVectorLength(); i != e; ++i)
    if (!IsSameFloatAfterCast(value.getVectorElt(i), Src, Tgt))
      return false;
  return true;
}

assert(value.isComplexFloat())((value.isComplexFloat()) ? static_cast<void> (0) : __assert_fail
 ("value.isComplexFloat()", "/build/llvm-toolchain-snapshot-9~svn362543/tools/clang/lib/Sema/SemaChecking.cpp"
, 10166, __PRETTY_FUNCTION__));
return (IsSameFloatAfterCast(value.getComplexFloatReal(), Src, Tgt) &&
        IsSameFloatAfterCast(value.getComplexFloatImag(), Src, Tgt));
10169}

10171static void AnalyzeImplicitConversions(Sema &S, Expr *E, SourceLocation CC);

10173static bool IsEnumConstOrFromMacro(Sema &S, Expr *E) {
// Suppress cases where we are comparing against an enum constant.
if (const DeclRefExpr *DR =
    dyn_cast<DeclRefExpr>(E->IgnoreParenImpCasts()))
  if (isa<EnumConstantDecl>(DR->getDecl()))
    return true;

// Suppress cases where the '0' value is expanded from a macro.
if (E->getBeginLoc().isMacroID())
  return true;

return false;
10185}

10187static bool isKnownToHaveUnsignedValue(Expr *E) {
return E->getType()->isIntegerType() &&
       (!E->getType()->isSignedIntegerType() ||
        !E->IgnoreParenImpCasts()->getType()->isSignedIntegerType());
10191}

10193namespace {
10194/// The promoted range of values of a type. In general this has the
10195/// following structure:
10196///
10197///     |-----------| . . . |-----------|
10198///     ^           ^       ^           ^
10199///    Min       HoleMin  HoleMax      Max
10200///
10201/// ... where there is only a hole if a signed type is promoted to unsigned
10202/// (in which case Min and Max are the smallest and largest representable
10203/// values).
10204struct PromotedRange {
// Min, or HoleMax if there is a hole.
llvm::APSInt PromotedMin;
// Max, or HoleMin if there is a hole.
llvm::APSInt PromotedMax;

PromotedRange(IntRange R, unsigned BitWidth, bool Unsigned) {
  if (R.Width == 0)
    PromotedMin = PromotedMax = llvm::APSInt(BitWidth, Unsigned);
  else if (R.Width >= BitWidth && !Unsigned) {
    // Promotion made the type *narrower*. This happens when promoting
    // a < 32-bit unsigned / <= 32-bit signed bit-field to 'signed int'.
    // Treat all values of 'signed int' as being in range for now.
    PromotedMin = llvm::APSInt::getMinValue(BitWidth, Unsigned);
    PromotedMax = llvm::APSInt::getMaxValue(BitWidth, Unsigned);
  } else {
    PromotedMin = llvm::APSInt::getMinValue(R.Width, R.NonNegative)
                      .extOrTrunc(BitWidth);
    PromotedMin.setIsUnsigned(Unsigned);

    PromotedMax = llvm::APSInt::getMaxValue(R.Width, R.NonNegative)
                      .extOrTrunc(BitWidth);
    PromotedMax.setIsUnsigned(Unsigned);
  }
}

// Determine whether this range is contiguous (has no hole).
bool isContiguous() const { return PromotedMin <= PromotedMax; }

// Where a constant value is within the range.
enum ComparisonResult {
  LT = 0x1,
  LE = 0x2,
  GT = 0x4,
  GE = 0x8,
  EQ = 0x10,
  NE = 0x20,
  InRangeFlag = 0x40,

  Less = LE | LT | NE,
  Min = LE | InRangeFlag,
  InRange = InRangeFlag,
  Max = GE | InRangeFlag,
  Greater = GE | GT | NE,

  OnlyValue = LE | GE | EQ | InRangeFlag,
  InHole = NE
};

ComparisonResult compare(const llvm::APSInt &Value) const {
  assert(Value.getBitWidth() == PromotedMin.getBitWidth() &&((Value.getBitWidth() == PromotedMin.getBitWidth() &&
 Value.isUnsigned() == PromotedMin.isUnsigned()) ? static_cast
<void> (0) : __assert_fail ("Value.getBitWidth() == PromotedMin.getBitWidth() && Value.isUnsigned() == PromotedMin.isUnsigned()"
, "/build/llvm-toolchain-snapshot-9~svn362543/tools/clang/lib/Sema/SemaChecking.cpp"
, 10255, __PRETTY_FUNCTION__))
         Value.isUnsigned() == PromotedMin.isUnsigned())((Value.getBitWidth() == PromotedMin.getBitWidth() &&
 Value.isUnsigned() == PromotedMin.isUnsigned()) ? static_cast
<void> (0) : __assert_fail ("Value.getBitWidth() == PromotedMin.getBitWidth() && Value.isUnsigned() == PromotedMin.isUnsigned()"
, "/build/llvm-toolchain-snapshot-9~svn362543/tools/clang/lib/Sema/SemaChecking.cpp"
, 10255, __PRETTY_FUNCTION__));
  if (!isContiguous()) {
    assert(Value.isUnsigned() && "discontiguous range for signed compare")((Value.isUnsigned() && "discontiguous range for signed compare"
) ? static_cast<void> (0) : __assert_fail ("Value.isUnsigned() && \"discontiguous range for signed compare\""
, "/build/llvm-toolchain-snapshot-9~svn362543/tools/clang/lib/Sema/SemaChecking.cpp"
, 10257, __PRETTY_FUNCTION__));
    if (Value.isMinValue()) return Min;
    if (Value.isMaxValue()) return Max;
    if (Value >= PromotedMin) return InRange;
    if (Value <= PromotedMax) return InRange;
    return InHole;
  }

  switch (llvm::APSInt::compareValues(Value, PromotedMin)) {
  case -1: return Less;
  case 0: return PromotedMin == PromotedMax ? OnlyValue : Min;
  case 1:
    switch (llvm::APSInt::compareValues(Value, PromotedMax)) {
    case -1: return InRange;
    case 0: return Max;
    case 1: return Greater;
    }
  }

  llvm_unreachable("impossible compare result")::llvm::llvm_unreachable_internal("impossible compare result"
, "/build/llvm-toolchain-snapshot-9~svn362543/tools/clang/lib/Sema/SemaChecking.cpp"
, 10276);
}

static llvm::Optional<StringRef>
constantValue(BinaryOperatorKind Op, ComparisonResult R, bool ConstantOnRHS) {
  if (Op == BO_Cmp) {
    ComparisonResult LTFlag = LT, GTFlag = GT;
    if (ConstantOnRHS) std::swap(LTFlag, GTFlag);

    if (R & EQ) return StringRef("'std::strong_ordering::equal'");
    if (R & LTFlag) return StringRef("'std::strong_ordering::less'");
    if (R & GTFlag) return StringRef("'std::strong_ordering::greater'");
    return llvm::None;
  }

  ComparisonResult TrueFlag, FalseFlag;
  if (Op == BO_EQ) {
    TrueFlag = EQ;
    FalseFlag = NE;
  } else if (Op == BO_NE) {
    TrueFlag = NE;
    FalseFlag = EQ;
  } else {
    if ((Op == BO_LT || Op == BO_GE) ^ ConstantOnRHS) {
      TrueFlag = LT;
      FalseFlag = GE;
    } else {
      TrueFlag = GT;
      FalseFlag = LE;
    }
    if (Op == BO_GE || Op == BO_LE)
      std::swap(TrueFlag, FalseFlag);
  }
  if (R & TrueFlag)
    return StringRef("true");
  if (R & FalseFlag)
    return StringRef("false");
  return llvm::None;
}
10315};
10316}

10318static bool HasEnumType(Expr *E) {
// Strip off implicit integral promotions.
while (ImplicitCastExpr *ICE = dyn_cast<ImplicitCastExpr>(E)) {
  if (ICE->getCastKind() != CK_IntegralCast &&
      ICE->getCastKind() != CK_NoOp)
    break;
  E = ICE->getSubExpr();
}

return E->getType()->isEnumeralType();
10328}

10330static int classifyConstantValue(Expr *Constant) {
// The values of this enumeration are used in the diagnostics
// diag::warn_out_of_range_compare and diag::warn_tautological_bool_compare.
enum ConstantValueKind {
  Miscellaneous = 0,
  LiteralTrue,
  LiteralFalse
};
if (auto *BL = dyn_cast<CXXBoolLiteralExpr>(Constant))
  return BL->getValue() ? ConstantValueKind::LiteralTrue
                        : ConstantValueKind::LiteralFalse;
return ConstantValueKind::Miscellaneous;
10342}

10344static bool CheckTautologicalComparison(Sema &S, BinaryOperator *E,
                                      Expr *Constant, Expr *Other,
                                      const llvm::APSInt &Value,
                                      bool RhsConstant) {
if (S.inTemplateInstantiation())
  return false;

Expr *OriginalOther = Other;

Constant = Constant->IgnoreParenImpCasts();
Other = Other->IgnoreParenImpCasts();

// Suppress warnings on tautological comparisons between values of the same
// enumeration type. There are only two ways we could warn on this:
//  - If the constant is outside the range of representable values of
//    the enumeration. In such a case, we should warn about the cast
//    to enumeration type, not about the comparison.
//  - If the constant is the maximum / minimum in-range value. For an
//    enumeratin type, such comparisons can be meaningful and useful.
if (Constant->getType()->isEnumeralType() &&
    S.Context.hasSameUnqualifiedType(Constant->getType(), Other->getType()))
  return false;

// TODO: Investigate using GetExprRange() to get tighter bounds
// on the bit ranges.
QualType OtherT = Other->getType();
if (const auto *AT = OtherT->getAs<AtomicType>())
  OtherT = AT->getValueType();
IntRange OtherRange = IntRange::forValueOfType(S.Context, OtherT);

// Whether we're treating Other as being a bool because of the form of
// expression despite it having another type (typically 'int' in C).
bool OtherIsBooleanDespiteType =
    !OtherT->isBooleanType() && Other->isKnownToHaveBooleanValue();
if (OtherIsBooleanDespiteType)
  OtherRange = IntRange::forBoolType();

// Determine the promoted range of the other type and see if a comparison of
// the constant against that range is tautological.
PromotedRange OtherPromotedRange(OtherRange, Value.getBitWidth(),
                                 Value.isUnsigned());
auto Cmp = OtherPromotedRange.compare(Value);
auto Result = PromotedRange::constantValue(E->getOpcode(), Cmp, RhsConstant);
if (!Result)
  return false;

// Suppress the diagnostic for an in-range comparison if the constant comes
// from a macro or enumerator. We don't want to diagnose
//
//   some_long_value <= INT_MAX
//
// when sizeof(int) == sizeof(long).
bool InRange = Cmp & PromotedRange::InRangeFlag;
if (InRange && IsEnumConstOrFromMacro(S, Constant))
  return false;

// If this is a comparison to an enum constant, include that
// constant in the diagnostic.
const EnumConstantDecl *ED = nullptr;
if (const DeclRefExpr *DR = dyn_cast<DeclRefExpr>(Constant))
  ED = dyn_cast<EnumConstantDecl>(DR->getDecl());

// Should be enough for uint128 (39 decimal digits)
SmallString<64> PrettySourceValue;
llvm::raw_svector_ostream OS(PrettySourceValue);
if (ED)
  OS << '\'' << *ED << "' (" << Value << ")";
else
  OS << Value;

// FIXME: We use a somewhat different formatting for the in-range cases and
// cases involving boolean values for historical reasons. We should pick a
// consistent way of presenting these diagnostics.
if (!InRange || Other->isKnownToHaveBooleanValue()) {
  S.DiagRuntimeBehavior(
    E->getOperatorLoc(), E,
    S.PDiag(!InRange ? diag::warn_out_of_range_compare
                     : diag::warn_tautological_bool_compare)
        << OS.str() << classifyConstantValue(Constant)
        << OtherT << OtherIsBooleanDespiteType << *Result
        << E->getLHS()->getSourceRange() << E->getRHS()->getSourceRange());
} else {
  unsigned Diag = (isKnownToHaveUnsignedValue(OriginalOther) && Value == 0)
                      ? (HasEnumType(OriginalOther)
                             ? diag::warn_unsigned_enum_always_true_comparison
                             : diag::warn_unsigned_always_true_comparison)
                      : diag::warn_tautological_constant_compare;

  S.Diag(E->getOperatorLoc(), Diag)
      << RhsConstant << OtherT << E->getOpcodeStr() << OS.str() << *Result
      << E->getLHS()->getSourceRange() << E->getRHS()->getSourceRange();
}

return true;
10438}

10440/// Analyze the operands of the given comparison.  Implements the
10441/// fallback case from AnalyzeComparison.
10442static void AnalyzeImpConvsInComparison(Sema &S, BinaryOperator *E) {
AnalyzeImplicitConversions(S, E->getLHS(), E->getOperatorLoc());
AnalyzeImplicitConversions(S, E->getRHS(), E->getOperatorLoc());
10445}

10447/// Implements -Wsign-compare.
10448///
10449/// \param E the binary operator to check for warnings
10450static void AnalyzeComparison(Sema &S, BinaryOperator *E) {
// The type the comparison is being performed in.
QualType T = E->getLHS()->getType();

// Only analyze comparison operators where both sides have been converted to
// the same type.
if (!S.Context.hasSameUnqualifiedType(T, E->getRHS()->getType()))
  return AnalyzeImpConvsInComparison(S, E);

// Don't analyze value-dependent comparisons directly.
if (E->isValueDependent())
  return AnalyzeImpConvsInComparison(S, E);

Expr *LHS = E->getLHS();
Expr *RHS = E->getRHS();

if (T->isIntegralType(S.Context)) {
  llvm::APSInt RHSValue;
  llvm::APSInt LHSValue;

  bool IsRHSIntegralLiteral = RHS->isIntegerConstantExpr(RHSValue, S.Context);
  bool IsLHSIntegralLiteral = LHS->isIntegerConstantExpr(LHSValue, S.Context);

  // We don't care about expressions whose result is a constant.
  if (IsRHSIntegralLiteral && IsLHSIntegralLiteral)
    return AnalyzeImpConvsInComparison(S, E);

  // We only care about expressions where just one side is literal
  if (IsRHSIntegralLiteral ^ IsLHSIntegralLiteral) {
    // Is the constant on the RHS or LHS?
    const bool RhsConstant = IsRHSIntegralLiteral;
    Expr *Const = RhsConstant ? RHS : LHS;
    Expr *Other = RhsConstant ? LHS : RHS;
    const llvm::APSInt &Value = RhsConstant ? RHSValue : LHSValue;

    // Check whether an integer constant comparison results in a value
    // of 'true' or 'false'.
    if (CheckTautologicalComparison(S, E, Const, Other, Value, RhsConstant))
      return AnalyzeImpConvsInComparison(S, E);
  }
}

if (!T->hasUnsignedIntegerRepresentation()) {
  // We don't do anything special if this isn't an unsigned integral
  // comparison:  we're only interested in integral comparisons, and
  // signed comparisons only happen in cases we don't care to warn about.
  return AnalyzeImpConvsInComparison(S, E);
}

LHS = LHS->IgnoreParenImpCasts();
RHS = RHS->IgnoreParenImpCasts();

if (!S.getLangOpts().CPlusPlus) {
  // Avoid warning about comparison of integers with different signs when
  // RHS/LHS has a `typeof(E)` type whose sign is different from the sign of
  // the type of `E`.
  if (const auto *TET = dyn_cast<TypeOfExprType>(LHS->getType()))
    LHS = TET->getUnderlyingExpr()->IgnoreParenImpCasts();
  if (const auto *TET = dyn_cast<TypeOfExprType>(RHS->getType()))
    RHS = TET->getUnderlyingExpr()->IgnoreParenImpCasts();
}

// Check to see if one of the (unmodified) operands is of different
// signedness.
Expr *signedOperand, *unsignedOperand;
if (LHS->getType()->hasSignedIntegerRepresentation()) {
  assert(!RHS->getType()->hasSignedIntegerRepresentation() &&((!RHS->getType()->hasSignedIntegerRepresentation() &&
 "unsigned comparison between two signed integer expressions?"
) ? static_cast<void> (0) : __assert_fail ("!RHS->getType()->hasSignedIntegerRepresentation() && \"unsigned comparison between two signed integer expressions?\""
, "/build/llvm-toolchain-snapshot-9~svn362543/tools/clang/lib/Sema/SemaChecking.cpp"
, 10517, __PRETTY_FUNCTION__))
         "unsigned comparison between two signed integer expressions?")((!RHS->getType()->hasSignedIntegerRepresentation() &&
 "unsigned comparison between two signed integer expressions?"
) ? static_cast<void> (0) : __assert_fail ("!RHS->getType()->hasSignedIntegerRepresentation() && \"unsigned comparison between two signed integer expressions?\""
, "/build/llvm-toolchain-snapshot-9~svn362543/tools/clang/lib/Sema/SemaChecking.cpp"
, 10517, __PRETTY_FUNCTION__));
  signedOperand = LHS;
  unsignedOperand = RHS;
} else if (RHS->getType()->hasSignedIntegerRepresentation()) {
  signedOperand = RHS;
  unsignedOperand = LHS;
} else {
  return AnalyzeImpConvsInComparison(S, E);
}

// Otherwise, calculate the effective range of the signed operand.
IntRange signedRange = GetExprRange(S.Context, signedOperand);

// Go ahead and analyze implicit conversions in the operands.  Note
// that we skip the implicit conversions on both sides.
AnalyzeImplicitConversions(S, LHS, E->getOperatorLoc());
AnalyzeImplicitConversions(S, RHS, E->getOperatorLoc());

// If the signed range is non-negative, -Wsign-compare won't fire.
if (signedRange.NonNegative)
  return;

// For (in)equality comparisons, if the unsigned operand is a
// constant which cannot collide with a overflowed signed operand,
// then reinterpreting the signed operand as unsigned will not
// change the result of the comparison.
if (E->isEqualityOp()) {
  unsigned comparisonWidth = S.Context.getIntWidth(T);
  IntRange unsignedRange = GetExprRange(S.Context, unsignedOperand);

  // We should never be unable to prove that the unsigned operand is
  // non-negative.
  assert(unsignedRange.NonNegative && "unsigned range includes negative?")((unsignedRange.NonNegative && "unsigned range includes negative?"
) ? static_cast<void> (0) : __assert_fail ("unsignedRange.NonNegative && \"unsigned range includes negative?\""
, "/build/llvm-toolchain-snapshot-9~svn362543/tools/clang/lib/Sema/SemaChecking.cpp"
, 10549, __PRETTY_FUNCTION__));

  if (unsignedRange.Width < comparisonWidth)
    return;
}

S.DiagRuntimeBehavior(E->getOperatorLoc(), E,
  S.PDiag(diag::warn_mixed_sign_comparison)
    << LHS->getType() << RHS->getType()
    << LHS->getSourceRange() << RHS->getSourceRange());
10559}

10561/// Analyzes an attempt to assign the given value to a bitfield.
10562///
10563/// Returns true if there was something fishy about the attempt.
10564static bool AnalyzeBitFieldAssignment(Sema &S, FieldDecl *Bitfield, Expr *Init,
                                    SourceLocation InitLoc) {
assert(Bitfield->isBitField())((Bitfield->isBitField()) ? static_cast<void> (0) : __assert_fail
 ("Bitfield->isBitField()", "/build/llvm-toolchain-snapshot-9~svn362543/tools/clang/lib/Sema/SemaChecking.cpp"
, 10566, __PRETTY_FUNCTION__));
if (Bitfield->isInvalidDecl())
  return false;

// White-list bool bitfields.
QualType BitfieldType = Bitfield->getType();
if (BitfieldType->isBooleanType())
   return false;

if (BitfieldType->isEnumeralType()) {
  EnumDecl *BitfieldEnumDecl = BitfieldType->getAs<EnumType>()->getDecl();
  // If the underlying enum type was not explicitly specified as an unsigned
  // type and the enum contain only positive values, MSVC++ will cause an
  // inconsistency by storing this as a signed type.
  if (S.getLangOpts().CPlusPlus11 &&
      !BitfieldEnumDecl->getIntegerTypeSourceInfo() &&
      BitfieldEnumDecl->getNumPositiveBits() > 0 &&
      BitfieldEnumDecl->getNumNegativeBits() == 0) {
    S.Diag(InitLoc, diag::warn_no_underlying_type_specified_for_enum_bitfield)
      << BitfieldEnumDecl->getNameAsString();
  }
}

if (Bitfield->getType()->isBooleanType())
  return false;

// Ignore value- or type-dependent expressions.
if (Bitfield->getBitWidth()->isValueDependent() ||
    Bitfield->getBitWidth()->isTypeDependent() ||
    Init->isValueDependent() ||
    Init->isTypeDependent())
  return false;

Expr *OriginalInit = Init->IgnoreParenImpCasts();
unsigned FieldWidth = Bitfield->getBitWidthValue(S.Context);

Expr::EvalResult Result;
if (!OriginalInit->EvaluateAsInt(Result, S.Context,
                                 Expr::SE_AllowSideEffects)) {
  // The RHS is not constant.  If the RHS has an enum type, make sure the
  // bitfield is wide enough to hold all the values of the enum without
  // truncation.
  if (const auto *EnumTy = OriginalInit->getType()->getAs<EnumType>()) {
    EnumDecl *ED = EnumTy->getDecl();
    bool SignedBitfield = BitfieldType->isSignedIntegerType();

    // Enum types are implicitly signed on Windows, so check if there are any
    // negative enumerators to see if the enum was intended to be signed or
    // not.
    bool SignedEnum = ED->getNumNegativeBits() > 0;

    // Check for surprising sign changes when assigning enum values to a
    // bitfield of different signedness.  If the bitfield is signed and we
    // have exactly the right number of bits to store this unsigned enum,
    // suggest changing the enum to an unsigned type. This typically happens
    // on Windows where unfixed enums always use an underlying type of 'int'.
    unsigned DiagID = 0;
    if (SignedEnum && !SignedBitfield) {
      DiagID = diag::warn_unsigned_bitfield_assigned_signed_enum;
    } else if (SignedBitfield && !SignedEnum &&
               ED->getNumPositiveBits() == FieldWidth) {
      DiagID = diag::warn_signed_bitfield_enum_conversion;
    }

    if (DiagID) {
      S.Diag(InitLoc, DiagID) << Bitfield << ED;
      TypeSourceInfo *TSI = Bitfield->getTypeSourceInfo();
      SourceRange TypeRange =
          TSI ? TSI->getTypeLoc().getSourceRange() : SourceRange();
      S.Diag(Bitfield->getTypeSpecStartLoc(), diag::note_change_bitfield_sign)
          << SignedEnum << TypeRange;
    }

    // Compute the required bitwidth. If the enum has negative values, we need
    // one more bit than the normal number of positive bits to represent the
    // sign bit.
    unsigned BitsNeeded = SignedEnum ? std::max(ED->getNumPositiveBits() + 1,
                                                ED->getNumNegativeBits())
                                     : ED->getNumPositiveBits();

    // Check the bitwidth.
    if (BitsNeeded > FieldWidth) {
      Expr *WidthExpr = Bitfield->getBitWidth();
      S.Diag(InitLoc, diag::warn_bitfield_too_small_for_enum)
          << Bitfield << ED;
      S.Diag(WidthExpr->getExprLoc(), diag::note_widen_bitfield)
          << BitsNeeded << ED << WidthExpr->getSourceRange();
    }
  }

  return false;
}

llvm::APSInt Value = Result.Val.getInt();

unsigned OriginalWidth = Value.getBitWidth();

if (!Value.isSigned() || Value.isNegative())
  if (UnaryOperator *UO = dyn_cast<UnaryOperator>(OriginalInit))
    if (UO->getOpcode() == UO_Minus || UO->getOpcode() == UO_Not)
      OriginalWidth = Value.getMinSignedBits();

if (OriginalWidth <= FieldWidth)
  return false;

// Compute the value which the bitfield will contain.
llvm::APSInt TruncatedValue = Value.trunc(FieldWidth);
TruncatedValue.setIsSigned(BitfieldType->isSignedIntegerType());

// Check whether the stored value is equal to the original value.
TruncatedValue = TruncatedValue.extend(OriginalWidth);
if (llvm::APSInt::isSameValue(Value, TruncatedValue))
  return false;

// Special-case bitfields of width 1: booleans are naturally 0/1, and
// therefore don't strictly fit into a signed bitfield of width 1.
if (FieldWidth == 1 && Value == 1)
  return false;

std::string PrettyValue = Value.toString(10);
std::string PrettyTrunc = TruncatedValue.toString(10);

S.Diag(InitLoc, diag::warn_impcast_bitfield_precision_constant)
  << PrettyValue << PrettyTrunc << OriginalInit->getType()
  << Init->getSourceRange();

return true;
10693}

10695/// Analyze the given simple or compound assignment for warning-worthy
10696/// operations.
10697static void AnalyzeAssignment(Sema &S, BinaryOperator *E) {
// Just recurse on the LHS.
AnalyzeImplicitConversions(S, E->getLHS(), E->getOperatorLoc());

// We want to recurse on the RHS as normal unless we're assigning to
// a bitfield.
if (FieldDecl *Bitfield = E->getLHS()->getSourceBitField()) {
  if (AnalyzeBitFieldAssignment(S, Bitfield, E->getRHS(),
                                E->getOperatorLoc())) {
    // Recurse, ignoring any implicit conversions on the RHS.
    return AnalyzeImplicitConversions(S, E->getRHS()->IgnoreParenImpCasts(),
                                      E->getOperatorLoc());
  }
}

AnalyzeImplicitConversions(S, E->getRHS(), E->getOperatorLoc());

// Diagnose implicitly sequentially-consistent atomic assignment.
if (E->getLHS()->getType()->isAtomicType())
  S.Diag(E->getRHS()->getBeginLoc(), diag::warn_atomic_implicit_seq_cst);
10717}

10719/// Diagnose an implicit cast;  purely a helper for CheckImplicitConversion.
10720static void DiagnoseImpCast(Sema &S, Expr *E, QualType SourceType, QualType T,
                          SourceLocation CContext, unsigned diag,
                          bool pruneControlFlow = false) {
if (pruneControlFlow) {
  S.DiagRuntimeBehavior(E->getExprLoc(), E,
                        S.PDiag(diag)
                          << SourceType << T << E->getSourceRange()
                          << SourceRange(CContext));
  return;
}
S.Diag(E->getExprLoc(), diag)
  << SourceType << T << E->getSourceRange() << SourceRange(CContext);
10732}

10734/// Diagnose an implicit cast;  purely a helper for CheckImplicitConversion.
10735static void DiagnoseImpCast(Sema &S, Expr *E, QualType T,
                          SourceLocation CContext,
                          unsigned diag, bool pruneControlFlow = false) {
DiagnoseImpCast(S, E, E->getType(), T, CContext, diag, pruneControlFlow);
10739}

10741/// Diagnose an implicit cast from a floating point value to an integer value.
10742static void DiagnoseFloatingImpCast(Sema &S, Expr *E, QualType T,
                                  SourceLocation CContext) {
const bool IsBool = T->isSpecificBuiltinType(BuiltinType::Bool);
const bool PruneWarnings = S.inTemplateInstantiation();

Expr *InnerE = E->IgnoreParenImpCasts();
// We also want to warn on, e.g., "int i = -1.234"
if (UnaryOperator *UOp = dyn_cast<UnaryOperator>(InnerE))
  if (UOp->getOpcode() == UO_Minus || UOp->getOpcode() == UO_Plus)
    InnerE = UOp->getSubExpr()->IgnoreParenImpCasts();

const bool IsLiteral =
    isa<FloatingLiteral>(E) || isa<FloatingLiteral>(InnerE);

llvm::APFloat Value(0.0);
bool IsConstant =
  E->EvaluateAsFloat(Value, S.Context, Expr::SE_AllowSideEffects);
if (!IsConstant) {
  return DiagnoseImpCast(S, E, T, CContext,
                         diag::warn_impcast_float_integer, PruneWarnings);
}

bool isExact = false;

llvm::APSInt IntegerValue(S.Context.getIntWidth(T),
                          T->hasUnsignedIntegerRepresentation());
llvm::APFloat::opStatus Result = Value.convertToInteger(
    IntegerValue, llvm::APFloat::rmTowardZero, &isExact);

if (Result == llvm::APFloat::opOK && isExact) {
  if (IsLiteral) return;
  return DiagnoseImpCast(S, E, T, CContext, diag::warn_impcast_float_integer,
                         PruneWarnings);
}

// Conversion of a floating-point value to a non-bool integer where the
// integral part cannot be represented by the integer type is undefined.
if (!IsBool && Result == llvm::APFloat::opInvalidOp)
  return DiagnoseImpCast(
      S, E, T, CContext,
      IsLiteral ? diag::warn_impcast_literal_float_to_integer_out_of_range
                : diag::warn_impcast_float_to_integer_out_of_range,
      PruneWarnings);

unsigned DiagID = 0;
if (IsLiteral) {
  // Warn on floating point literal to integer.
  DiagID = diag::warn_impcast_literal_float_to_integer;
} else if (IntegerValue == 0) {
  if (Value.isZero()) {  // Skip -0.0 to 0 conversion.
    return DiagnoseImpCast(S, E, T, CContext,
                           diag::warn_impcast_float_integer, PruneWarnings);
  }
  // Warn on non-zero to zero conversion.
  DiagID = diag::warn_impcast_float_to_integer_zero;
} else {
  if (IntegerValue.isUnsigned()) {
    if (!IntegerValue.isMaxValue()) {
      return DiagnoseImpCast(S, E, T, CContext,
                             diag::warn_impcast_float_integer, PruneWarnings);
    }
  } else {  // IntegerValue.isSigned()
    if (!IntegerValue.isMaxSignedValue() &&
        !IntegerValue.isMinSignedValue()) {
      return DiagnoseImpCast(S, E, T, CContext,
                             diag::warn_impcast_float_integer, PruneWarnings);
    }
  }
  // Warn on evaluatable floating point expression to integer conversion.
  DiagID = diag::warn_impcast_float_to_integer;
}

// FIXME: Force the precision of the source value down so we don't print
// digits which are usually useless (we don't really care here if we
// truncate a digit by accident in edge cases).  Ideally, APFloat::toString
// would automatically print the shortest representation, but it's a bit
// tricky to implement.
SmallString<16> PrettySourceValue;
unsigned precision = llvm::APFloat::semanticsPrecision(Value.getSemantics());
precision = (precision * 59 + 195) / 196;
Value.toString(PrettySourceValue, precision);

SmallString<16> PrettyTargetValue;
if (IsBool)
  PrettyTargetValue = Value.isZero() ? "false" : "true";
else
  IntegerValue.toString(PrettyTargetValue);

if (PruneWarnings) {
  S.DiagRuntimeBehavior(E->getExprLoc(), E,
                        S.PDiag(DiagID)
                            << E->getType() << T.getUnqualifiedType()
                            << PrettySourceValue << PrettyTargetValue
                            << E->getSourceRange() << SourceRange(CContext));
} else {
  S.Diag(E->getExprLoc(), DiagID)
      << E->getType() << T.getUnqualifiedType() << PrettySourceValue
      << PrettyTargetValue << E->getSourceRange() << SourceRange(CContext);
}
10841}

10843/// Analyze the given compound assignment for the possible losing of
10844/// floating-point precision.
10845static void AnalyzeCompoundAssignment(Sema &S, BinaryOperator *E) {
assert(isa<CompoundAssignOperator>(E) &&((isa<CompoundAssignOperator>(E) && "Must be compound assignment operation"
) ? static_cast<void> (0) : __assert_fail ("isa<CompoundAssignOperator>(E) && \"Must be compound assignment operation\""
, "/build/llvm-toolchain-snapshot-9~svn362543/tools/clang/lib/Sema/SemaChecking.cpp"
, 10847, __PRETTY_FUNCTION__))
       "Must be compound assignment operation")((isa<CompoundAssignOperator>(E) && "Must be compound assignment operation"
) ? static_cast<void> (0) : __assert_fail ("isa<CompoundAssignOperator>(E) && \"Must be compound assignment operation\""
, "/build/llvm-toolchain-snapshot-9~svn362543/tools/clang/lib/Sema/SemaChecking.cpp"
, 10847, __PRETTY_FUNCTION__));
// Recurse on the LHS and RHS in here
AnalyzeImplicitConversions(S, E->getLHS(), E->getOperatorLoc());
AnalyzeImplicitConversions(S, E->getRHS(), E->getOperatorLoc());

if (E->getLHS()->getType()->isAtomicType())
  S.Diag(E->getOperatorLoc(), diag::warn_atomic_implicit_seq_cst);

// Now check the outermost expression
const auto *ResultBT = E->getLHS()->getType()->getAs<BuiltinType>();
const auto *RBT = cast<CompoundAssignOperator>(E)
                      ->getComputationResultType()
                      ->getAs<BuiltinType>();

// The below checks assume source is floating point.
if (!ResultBT || !RBT || !RBT->isFloatingPoint()) return;

// If source is floating point but target is an integer.
if (ResultBT->isInteger())
  return DiagnoseImpCast(S, E, E->getRHS()->getType(), E->getLHS()->getType(),
                         E->getExprLoc(), diag::warn_impcast_float_integer);

if (!ResultBT->isFloatingPoint())
  return;

// If both source and target are floating points, warn about losing precision.
int Order = S.getASTContext().getFloatingTypeSemanticOrder(
    QualType(ResultBT, 0), QualType(RBT, 0));
if (Order < 0 && !S.SourceMgr.isInSystemMacro(E->getOperatorLoc()))
  // warn about dropping FP rank.
  DiagnoseImpCast(S, E->getRHS(), E->getLHS()->getType(), E->getOperatorLoc(),
                  diag::warn_impcast_float_result_precision);
10879}

10881static std::string PrettyPrintInRange(const llvm::APSInt &Value,
                                    IntRange Range) {
if (!Range.Width) return "0";

llvm::APSInt ValueInRange = Value;
ValueInRange.setIsSigned(!Range.NonNegative);
ValueInRange = ValueInRange.trunc(Range.Width);
return ValueInRange.toString(10);
10889}

10891static bool IsImplicitBoolFloatConversion(Sema &S, Expr *Ex, bool ToBool) {
if (!isa<ImplicitCastExpr>(Ex))
  return false;

Expr *InnerE = Ex->IgnoreParenImpCasts();
const Type *Target = S.Context.getCanonicalType(Ex->getType()).getTypePtr();
const Type *Source =
  S.Context.getCanonicalType(InnerE->getType()).getTypePtr();
if (Target->isDependentType())
  return false;

const BuiltinType *FloatCandidateBT =
  dyn_cast<BuiltinType>(ToBool ? Source : Target);
const Type *BoolCandidateType = ToBool ? Target : Source;

return (BoolCandidateType->isSpecificBuiltinType(BuiltinType::Bool) &&
        FloatCandidateBT && (FloatCandidateBT->isFloatingPoint()));
10908}

10910static void CheckImplicitArgumentConversions(Sema &S, CallExpr *TheCall,
                                           SourceLocation CC) {
unsigned NumArgs = TheCall->getNumArgs();
for (unsigned i = 0; i < NumArgs; ++i) {
  Expr *CurrA = TheCall->getArg(i);
  if (!IsImplicitBoolFloatConversion(S, CurrA, true))
    continue;

  bool IsSwapped = ((i > 0) &&
      IsImplicitBoolFloatConversion(S, TheCall->getArg(i - 1), false));
  IsSwapped |= ((i < (NumArgs - 1)) &&
      IsImplicitBoolFloatConversion(S, TheCall->getArg(i + 1), false));
  if (IsSwapped) {
    // Warn on this floating-point to bool conversion.
    DiagnoseImpCast(S, CurrA->IgnoreParenImpCasts(),
                    CurrA->getType(), CC,
                    diag::warn_impcast_floating_point_to_bool);
  }
}
10929}

10931static void DiagnoseNullConversion(Sema &S, Expr *E, QualType T,
                                 SourceLocation CC) {
if (S.Diags.isIgnored(diag::warn_impcast_null_pointer_to_integer,
                      E->getExprLoc()))
  return;

// Don't warn on functions which have return type nullptr_t.
if (isa<CallExpr>(E))
  return;

// Check for NULL (GNUNull) or nullptr (CXX11_nullptr).
const Expr::NullPointerConstantKind NullKind =
    E->isNullPointerConstant(S.Context, Expr::NPC_ValueDependentIsNotNull);
if (NullKind != Expr::NPCK_GNUNull && NullKind != Expr::NPCK_CXX11_nullptr)
  return;

// Return if target type is a safe conversion.
if (T->isAnyPointerType() || T->isBlockPointerType() ||
    T->isMemberPointerType() || !T->isScalarType() || T->isNullPtrType())
  return;

SourceLocation Loc = E->getSourceRange().getBegin();

// Venture through the macro stacks to get to the source of macro arguments.
// The new location is a better location than the complete location that was
// passed in.
Loc = S.SourceMgr.getTopMacroCallerLoc(Loc);
CC = S.SourceMgr.getTopMacroCallerLoc(CC);

// __null is usually wrapped in a macro.  Go up a macro if that is the case.
if (NullKind == Expr::NPCK_GNUNull && Loc.isMacroID()) {
  StringRef MacroName = Lexer::getImmediateMacroNameForDiagnostics(
      Loc, S.SourceMgr, S.getLangOpts());
  if (MacroName == "NULL")
    Loc = S.SourceMgr.getImmediateExpansionRange(Loc).getBegin();
}

// Only warn if the null and context location are in the same macro expansion.
if (S.SourceMgr.getFileID(Loc) != S.SourceMgr.getFileID(CC))
  return;

S.Diag(Loc, diag::warn_impcast_null_pointer_to_integer)
    << (NullKind == Expr::NPCK_CXX11_nullptr) << T << SourceRange(CC)
    << FixItHint::CreateReplacement(Loc,
                                    S.getFixItZeroLiteralForType(T, Loc));
10976}

10978static void checkObjCArrayLiteral(Sema &S, QualType TargetType,
                                ObjCArrayLiteral *ArrayLiteral);

10981static void
10982checkObjCDictionaryLiteral(Sema &S, QualType TargetType,
                         ObjCDictionaryLiteral *DictionaryLiteral);

10985/// Check a single element within a collection literal against the
10986/// target element type.
10987static void checkObjCCollectionLiteralElement(Sema &S,
                                            QualType TargetElementType,
                                            Expr *Element,
                                            unsigned ElementKind) {
// Skip a bitcast to 'id' or qualified 'id'.
if (auto ICE = dyn_cast<ImplicitCastExpr>(Element)) {
  if (ICE->getCastKind() == CK_BitCast &&
      ICE->getSubExpr()->getType()->getAs<ObjCObjectPointerType>())
    Element = ICE->getSubExpr();
}

QualType ElementType = Element->getType();
ExprResult ElementResult(Element);
if (ElementType->getAs<ObjCObjectPointerType>() &&
    S.CheckSingleAssignmentConstraints(TargetElementType,
                                       ElementResult,
                                       false, false)
      != Sema::Compatible) {
  S.Diag(Element->getBeginLoc(), diag::warn_objc_collection_literal_element)
      << ElementType << ElementKind << TargetElementType
      << Element->getSourceRange();
}

if (auto ArrayLiteral = dyn_cast<ObjCArrayLiteral>(Element))
  checkObjCArrayLiteral(S, TargetElementType, ArrayLiteral);
else if (auto DictionaryLiteral = dyn_cast<ObjCDictionaryLiteral>(Element))
  checkObjCDictionaryLiteral(S, TargetElementType, DictionaryLiteral);
11014}

11016/// Check an Objective-C array literal being converted to the given
11017/// target type.
11018static void checkObjCArrayLiteral(Sema &S, QualType TargetType,
                                ObjCArrayLiteral *ArrayLiteral) {
if (!S.NSArrayDecl)
  return;

const auto *TargetObjCPtr = TargetType->getAs<ObjCObjectPointerType>();
if (!TargetObjCPtr)
  return;

if (TargetObjCPtr->isUnspecialized() ||
    TargetObjCPtr->getInterfaceDecl()->getCanonicalDecl()
      != S.NSArrayDecl->getCanonicalDecl())
  return;

auto TypeArgs = TargetObjCPtr->getTypeArgs();
if (TypeArgs.size() != 1)
  return;

QualType TargetElementType = TypeArgs[0];
for (unsigned I = 0, N = ArrayLiteral->getNumElements(); I != N; ++I) {
  checkObjCCollectionLiteralElement(S, TargetElementType,
                                    ArrayLiteral->getElement(I),
                                    0);
}
11042}

11044/// Check an Objective-C dictionary literal being converted to the given
11045/// target type.
11046static void
11047checkObjCDictionaryLiteral(Sema &S, QualType TargetType,
                         ObjCDictionaryLiteral *DictionaryLiteral) {
if (!S.NSDictionaryDecl)
  return;

const auto *TargetObjCPtr = TargetType->getAs<ObjCObjectPointerType>();
if (!TargetObjCPtr)
  return;

if (TargetObjCPtr->isUnspecialized() ||
    TargetObjCPtr->getInterfaceDecl()->getCanonicalDecl()
      != S.NSDictionaryDecl->getCanonicalDecl())
  return;

auto TypeArgs = TargetObjCPtr->getTypeArgs();
if (TypeArgs.size() != 2)
  return;

QualType TargetKeyType = TypeArgs[0];
QualType TargetObjectType = TypeArgs[1];
for (unsigned I = 0, N = DictionaryLiteral->getNumElements(); I != N; ++I) {
  auto Element = DictionaryLiteral->getKeyValueElement(I);
  checkObjCCollectionLiteralElement(S, TargetKeyType, Element.Key, 1);
  checkObjCCollectionLiteralElement(S, TargetObjectType, Element.Value, 2);
}
11072}

11074// Helper function to filter out cases for constant width constant conversion.
11075// Don't warn on char array initialization or for non-decimal values.
11076static bool isSameWidthConstantConversion(Sema &S, Expr *E, QualType T,
                                        SourceLocation CC) {
// If initializing from a constant, and the constant starts with '0',
// then it is a binary, octal, or hexadecimal.  Allow these constants
// to fill all the bits, even if there is a sign change.
if (auto *IntLit = dyn_cast<IntegerLiteral>(E->IgnoreParenImpCasts())) {
  const char FirstLiteralCharacter =
      S.getSourceManager().getCharacterData(IntLit->getBeginLoc())[0];
  if (FirstLiteralCharacter == '0')
    return false;
}

// If the CC location points to a '{', and the type is char, then assume
// assume it is an array initialization.
if (CC.isValid() && T->isCharType()) {
  const char FirstContextCharacter =
      S.getSourceManager().getCharacterData(CC)[0];
  if (FirstContextCharacter == '{')
    return false;
}

return true;
11098}

11100static void
11101CheckImplicitConversion(Sema &S, Expr *E, QualType T, SourceLocation CC,
                      bool *ICContext = nullptr) {
if (E->isTypeDependent() || E->isValueDependent()) return;

const Type *Source = S.Context.getCanonicalType(E->getType()).getTypePtr();
const Type *Target = S.Context.getCanonicalType(T).getTypePtr();
if (Source == Target) return;
if (Target->isDependentType()) return;

// If the conversion context location is invalid don't complain. We also
// don't want to emit a warning if the issue occurs from the expansion of
// a system macro. The problem is that 'getSpellingLoc()' is slow, so we
// delay this check as long as possible. Once we detect we are in that
// scenario, we just return.
if (CC.isInvalid())
  return;

if (Source->isAtomicType())
  S.Diag(E->getExprLoc(), diag::warn_atomic_implicit_seq_cst);

// Diagnose implicit casts to bool.
if (Target->isSpecificBuiltinType(BuiltinType::Bool)) {
  if (isa<StringLiteral>(E))
    // Warn on string literal to bool.  Checks for string literals in logical
    // and expressions, for instance, assert(0 && "error here"), are
    // prevented by a check in AnalyzeImplicitConversions().
    return DiagnoseImpCast(S, E, T, CC,
                           diag::warn_impcast_string_literal_to_bool);
  if (isa<ObjCStringLiteral>(E) || isa<ObjCArrayLiteral>(E) ||
      isa<ObjCDictionaryLiteral>(E) || isa<ObjCBoxedExpr>(E)) {
    // This covers the literal expressions that evaluate to Objective-C
    // objects.
    return DiagnoseImpCast(S, E, T, CC,
                           diag::warn_impcast_objective_c_literal_to_bool);
  }
  if (Source->isPointerType() || Source->canDecayToPointerType()) {
    // Warn on pointer to bool conversion that is always true.
    S.DiagnoseAlwaysNonNullPointer(E, Expr::NPCK_NotNull, /*IsEqual*/ false,
                                   SourceRange(CC));
  }
}

// Check implicit casts from Objective-C collection literals to specialized
// collection types, e.g., NSArray<NSString *> *.
if (auto *ArrayLiteral = dyn_cast<ObjCArrayLiteral>(E))
  checkObjCArrayLiteral(S, QualType(Target, 0), ArrayLiteral);
else if (auto *DictionaryLiteral = dyn_cast<ObjCDictionaryLiteral>(E))
  checkObjCDictionaryLiteral(S, QualType(Target, 0), DictionaryLiteral);

// Strip vector types.
if (isa<VectorType>(Source)) {
  if (!isa<VectorType>(Target)) {
    if (S.SourceMgr.isInSystemMacro(CC))
      return;
    return DiagnoseImpCast(S, E, T, CC, diag::warn_impcast_vector_scalar);
  }

  // If the vector cast is cast between two vectors of the same size, it is
  // a bitcast, not a conversion.
  if (S.Context.getTypeSize(Source) == S.Context.getTypeSize(Target))
    return;

  Source = cast<VectorType>(Source)->getElementType().getTypePtr();
  Target = cast<VectorType>(Target)->getElementType().getTypePtr();
}
if (auto VecTy = dyn_cast<VectorType>(Target))
  Target = VecTy->getElementType().getTypePtr();

// Strip complex types.
if (isa<ComplexType>(Source)) {
  if (!isa<ComplexType>(Target)) {
    if (S.SourceMgr.isInSystemMacro(CC) || Target->isBooleanType())
      return;

    return DiagnoseImpCast(S, E, T, CC,
                           S.getLangOpts().CPlusPlus
                               ? diag::err_impcast_complex_scalar
                               : diag::warn_impcast_complex_scalar);
  }

  Source = cast<ComplexType>(Source)->getElementType().getTypePtr();
  Target = cast<ComplexType>(Target)->getElementType().getTypePtr();
}

const BuiltinType *SourceBT = dyn_cast<BuiltinType>(Source);
const BuiltinType *TargetBT = dyn_cast<BuiltinType>(Target);

// If the source is floating point...
if (SourceBT && SourceBT->isFloatingPoint()) {
  // ...and the target is floating point...
  if (TargetBT && TargetBT->isFloatingPoint()) {
    // ...then warn if we're dropping FP rank.

    int Order = S.getASTContext().getFloatingTypeSemanticOrder(
        QualType(SourceBT, 0), QualType(TargetBT, 0));
    if (Order > 0) {
      // Don't warn about float constants that are precisely
      // representable in the target type.
      Expr::EvalResult result;
      if (E->EvaluateAsRValue(result, S.Context)) {
        // Value might be a float, a float vector, or a float complex.
        if (IsSameFloatAfterCast(result.Val,
                 S.Context.getFloatTypeSemantics(QualType(TargetBT, 0)),
                 S.Context.getFloatTypeSemantics(QualType(SourceBT, 0))))
          return;
      }

      if (S.SourceMgr.isInSystemMacro(CC))
        return;

      DiagnoseImpCast(S, E, T, CC, diag::warn_impcast_float_precision);
    }
    // ... or possibly if we're increasing rank, too
    else if (Order < 0) {
      if (S.SourceMgr.isInSystemMacro(CC))
        return;

      DiagnoseImpCast(S, E, T, CC, diag::warn_impcast_double_promotion);
    }
    return;
  }

  // If the target is integral, always warn.
  if (TargetBT && TargetBT->isInteger()) {
    if (S.SourceMgr.isInSystemMacro(CC))
      return;

    DiagnoseFloatingImpCast(S, E, T, CC);
  }

  // Detect the case where a call result is converted from floating-point to
  // to bool, and the final argument to the call is converted from bool, to
  // discover this typo:
  //
  //    bool b = fabs(x < 1.0);  // should be "bool b = fabs(x) < 1.0;"
  //
  // FIXME: This is an incredibly special case; is there some more general
  // way to detect this class of misplaced-parentheses bug?
  if (Target->isBooleanType() && isa<CallExpr>(E)) {
    // Check last argument of function call to see if it is an
    // implicit cast from a type matching the type the result
    // is being cast to.
    CallExpr *CEx = cast<CallExpr>(E);
    if (unsigned NumArgs = CEx->getNumArgs()) {
      Expr *LastA = CEx->getArg(NumArgs - 1);
      Expr *InnerE = LastA->IgnoreParenImpCasts();
      if (isa<ImplicitCastExpr>(LastA) &&
          InnerE->getType()->isBooleanType()) {
        // Warn on this floating-point to bool conversion
        DiagnoseImpCast(S, E, T, CC,
                        diag::warn_impcast_floating_point_to_bool);
      }
    }
  }
  return;
}

// Valid casts involving fixed point types should be accounted for here.
if (Source->isFixedPointType()) {
  if (Target->isUnsaturatedFixedPointType()) {
    Expr::EvalResult Result;
    if (E->EvaluateAsFixedPoint(Result, S.Context,
                                Expr::SE_AllowSideEffects)) {
      APFixedPoint Value = Result.Val.getFixedPoint();
      APFixedPoint MaxVal = S.Context.getFixedPointMax(T);
      APFixedPoint MinVal = S.Context.getFixedPointMin(T);
      if (Value > MaxVal || Value < MinVal) {
        S.DiagRuntimeBehavior(E->getExprLoc(), E,
                              S.PDiag(diag::warn_impcast_fixed_point_range)
                                  << Value.toString() << T
                                  << E->getSourceRange()
                                  << clang::SourceRange(CC));
        return;
      }
    }
  } else if (Target->isIntegerType()) {
    Expr::EvalResult Result;
    if (E->EvaluateAsFixedPoint(Result, S.Context,
                                Expr::SE_AllowSideEffects)) {
      APFixedPoint FXResult = Result.Val.getFixedPoint();

      bool Overflowed;
      llvm::APSInt IntResult = FXResult.convertToInt(
          S.Context.getIntWidth(T),
          Target->isSignedIntegerOrEnumerationType(), &Overflowed);

      if (Overflowed) {
        S.DiagRuntimeBehavior(E->getExprLoc(), E,
                              S.PDiag(diag::warn_impcast_fixed_point_range)
                                  << FXResult.toString() << T
                                  << E->getSourceRange()
                                  << clang::SourceRange(CC));
        return;
      }
    }
  }
} else if (Target->isUnsaturatedFixedPointType()) {
  if (Source->isIntegerType()) {
    Expr::EvalResult Result;
    if (E->EvaluateAsInt(Result, S.Context, Expr::SE_AllowSideEffects)) {
      llvm::APSInt Value = Result.Val.getInt();

      bool Overflowed;
      APFixedPoint IntResult = APFixedPoint::getFromIntValue(
          Value, S.Context.getFixedPointSemantics(T), &Overflowed);

      if (Overflowed) {
        S.DiagRuntimeBehavior(E->getExprLoc(), E,
                              S.PDiag(diag::warn_impcast_fixed_point_range)
                                  << Value.toString(/*radix=*/10) << T
                                  << E->getSourceRange()
                                  << clang::SourceRange(CC));
        return;
      }
    }
  }
}

DiagnoseNullConversion(S, E, T, CC);

S.DiscardMisalignedMemberAddress(Target, E);

if (!Source->isIntegerType() || !Target->isIntegerType())
  return;

// TODO: remove this early return once the false positives for constant->bool
// in templates, macros, etc, are reduced or removed.
if (Target->isSpecificBuiltinType(BuiltinType::Bool))
  return;

IntRange SourceRange = GetExprRange(S.Context, E);
IntRange TargetRange = IntRange::forTargetOfCanonicalType(S.Context, Target);

if (SourceRange.Width > TargetRange.Width) {
  // If the source is a constant, use a default-on diagnostic.
  // TODO: this should happen for bitfield stores, too.
  Expr::EvalResult Result;
  if (E->EvaluateAsInt(Result, S.Context, Expr::SE_AllowSideEffects)) {
    llvm::APSInt Value(32);
    Value = Result.Val.getInt();

    if (S.SourceMgr.isInSystemMacro(CC))
      return;

    std::string PrettySourceValue = Value.toString(10);
    std::string PrettyTargetValue = PrettyPrintInRange(Value, TargetRange);

    S.DiagRuntimeBehavior(E->getExprLoc(), E,
      S.PDiag(diag::warn_impcast_integer_precision_constant)
          << PrettySourceValue << PrettyTargetValue
          << E->getType() << T << E->getSourceRange()
          << clang::SourceRange(CC));
    return;
  }

  // People want to build with -Wshorten-64-to-32 and not -Wconversion.
  if (S.SourceMgr.isInSystemMacro(CC))
    return;

  if (TargetRange.Width == 32 && S.Context.getIntWidth(E->getType()) == 64)
    return DiagnoseImpCast(S, E, T, CC, diag::warn_impcast_integer_64_32,
                           /* pruneControlFlow */ true);
  return DiagnoseImpCast(S, E, T, CC, diag::warn_impcast_integer_precision);
}

if (TargetRange.Width > SourceRange.Width) {
  if (auto *UO = dyn_cast<UnaryOperator>(E))
    if (UO->getOpcode() == UO_Minus)
      if (Source->isUnsignedIntegerType()) {
        if (Target->isUnsignedIntegerType())
          return DiagnoseImpCast(S, E, T, CC,
                                 diag::warn_impcast_high_order_zero_bits);
        if (Target->isSignedIntegerType())
          return DiagnoseImpCast(S, E, T, CC,
                                 diag::warn_impcast_nonnegative_result);
      }
}

if (TargetRange.Width == SourceRange.Width && !TargetRange.NonNegative &&
    SourceRange.NonNegative && Source->isSignedIntegerType()) {
  // Warn when doing a signed to signed conversion, warn if the positive
  // source value is exactly the width of the target type, which will
  // cause a negative value to be stored.

  Expr::EvalResult Result;
  if (E->EvaluateAsInt(Result, S.Context, Expr::SE_AllowSideEffects) &&
      !S.SourceMgr.isInSystemMacro(CC)) {
    llvm::APSInt Value = Result.Val.getInt();
    if (isSameWidthConstantConversion(S, E, T, CC)) {
      std::string PrettySourceValue = Value.toString(10);
      std::string PrettyTargetValue = PrettyPrintInRange(Value, TargetRange);

      S.DiagRuntimeBehavior(
          E->getExprLoc(), E,
          S.PDiag(diag::warn_impcast_integer_precision_constant)
              << PrettySourceValue << PrettyTargetValue << E->getType() << T
              << E->getSourceRange() << clang::SourceRange(CC));
      return;
    }
  }

  // Fall through for non-constants to give a sign conversion warning.
}

if ((TargetRange.NonNegative && !SourceRange.NonNegative) ||
    (!TargetRange.NonNegative && SourceRange.NonNegative &&
     SourceRange.Width == TargetRange.Width)) {
  if (S.SourceMgr.isInSystemMacro(CC))
    return;

  unsigned DiagID = diag::warn_impcast_integer_sign;

  // Traditionally, gcc has warned about this under -Wsign-compare.
  // We also want to warn about it in -Wconversion.
  // So if -Wconversion is off, use a completely identical diagnostic
  // in the sign-compare group.
  // The conditional-checking code will
  if (ICContext) {
    DiagID = diag::warn_impcast_integer_sign_conditional;
    *ICContext = true;
  }

  return DiagnoseImpCast(S, E, T, CC, DiagID);
}

// Diagnose conversions between different enumeration types.
// In C, we pretend that the type of an EnumConstantDecl is its enumeration
// type, to give us better diagnostics.
QualType SourceType = E->getType();
if (!S.getLangOpts().CPlusPlus) {
  if (DeclRefExpr *DRE = dyn_cast<DeclRefExpr>(E))
    if (EnumConstantDecl *ECD = dyn_cast<EnumConstantDecl>(DRE->getDecl())) {
      EnumDecl *Enum = cast<EnumDecl>(ECD->getDeclContext());
      SourceType = S.Context.getTypeDeclType(Enum);
      Source = S.Context.getCanonicalType(SourceType).getTypePtr();
    }
}

if (const EnumType *SourceEnum = Source->getAs<EnumType>())
  if (const EnumType *TargetEnum = Target->getAs<EnumType>())
    if (SourceEnum->getDecl()->hasNameForLinkage() &&
        TargetEnum->getDecl()->hasNameForLinkage() &&
        SourceEnum != TargetEnum) {
      if (S.SourceMgr.isInSystemMacro(CC))
        return;

      return DiagnoseImpCast(S, E, SourceType, T, CC,
                             diag::warn_impcast_different_enum_types);
    }
11450}

11452static void CheckConditionalOperator(Sema &S, ConditionalOperator *E,
                                   SourceLocation CC, QualType T);

11455static void CheckConditionalOperand(Sema &S, Expr *E, QualType T,
                                  SourceLocation CC, bool &ICContext) {
E = E->IgnoreParenImpCasts();

if (isa<ConditionalOperator>(E))
  return CheckConditionalOperator(S, cast<ConditionalOperator>(E), CC, T);

AnalyzeImplicitConversions(S, E, CC);
if (E->getType() != T)
  return CheckImplicitConversion(S, E, T, CC, &ICContext);
11465}

11467static void CheckConditionalOperator(Sema &S, ConditionalOperator *E,
                                   SourceLocation CC, QualType T) {
AnalyzeImplicitConversions(S, E->getCond(), E->getQuestionLoc());

bool Suspicious = false;
CheckConditionalOperand(S, E->getTrueExpr(), T, CC, Suspicious);
CheckConditionalOperand(S, E->getFalseExpr(), T, CC, Suspicious);

// If -Wconversion would have warned about either of the candidates
// for a signedness conversion to the context type...
if (!Suspicious) return;

// ...but it's currently ignored...
if (!S.Diags.isIgnored(diag::warn_impcast_integer_sign_conditional, CC))
  return;

// ...then check whether it would have warned about either of the
// candidates for a signedness conversion to the condition type.
if (E->getType() == T) return;

Suspicious = false;
CheckImplicitConversion(S, E->getTrueExpr()->IgnoreParenImpCasts(),
                        E->getType(), CC, &Suspicious);
if (!Suspicious)
  CheckImplicitConversion(S, E->getFalseExpr()->IgnoreParenImpCasts(),
                          E->getType(), CC, &Suspicious);
11493}

11495/// Check conversion of given expression to boolean.
11496/// Input argument E is a logical expression.
11497static void CheckBoolLikeConversion(Sema &S, Expr *E, SourceLocation CC) {
if (S.getLangOpts().Bool)
  return;
if (E->IgnoreParenImpCasts()->getType()->isAtomicType())
  return;
CheckImplicitConversion(S, E->IgnoreParenImpCasts(), S.Context.BoolTy, CC);
11503}

11505/// AnalyzeImplicitConversions - Find and report any interesting
11506/// implicit conversions in the given expression.  There are a couple
11507/// of competing diagnostics here, -Wconversion and -Wsign-compare.
11508static void AnalyzeImplicitConversions(Sema &S, Expr *OrigE,
                                     SourceLocation CC) {
QualType T = OrigE->getType();
Expr *E = OrigE->IgnoreParenImpCasts();

if (E->isTypeDependent() || E->isValueDependent())
  return;

// For conditional operators, we analyze the arguments as if they
// were being fed directly into the output.
if (isa<ConditionalOperator>(E)) {
  ConditionalOperator *CO = cast<ConditionalOperator>(E);
  CheckConditionalOperator(S, CO, CC, T);
  return;
}

// Check implicit argument conversions for function calls.
if (CallExpr *Call = dyn_cast<CallExpr>(E))
  CheckImplicitArgumentConversions(S, Call, CC);

// Go ahead and check any implicit conversions we might have skipped.
// The non-canonical typecheck is just an optimization;
// CheckImplicitConversion will filter out dead implicit conversions.
if (E->getType() != T)
  CheckImplicitConversion(S, E, T, CC);

// Now continue drilling into this expression.

if (PseudoObjectExpr *POE = dyn_cast<PseudoObjectExpr>(E)) {
  // The bound subexpressions in a PseudoObjectExpr are not reachable
  // as transitive children.
  // FIXME: Use a more uniform representation for this.
  for (auto *SE : POE->semantics())
    if (auto *OVE = dyn_cast<OpaqueValueExpr>(SE))
      AnalyzeImplicitConversions(S, OVE->getSourceExpr(), CC);
}

// Skip past explicit casts.
if (auto *CE = dyn_cast<ExplicitCastExpr>(E)) {
  E = CE->getSubExpr()->IgnoreParenImpCasts();
  if (!CE->getType()->isVoidType() && E->getType()->isAtomicType())
    S.Diag(E->getBeginLoc(), diag::warn_atomic_implicit_seq_cst);
  return AnalyzeImplicitConversions(S, E, CC);
}

if (BinaryOperator *BO = dyn_cast<BinaryOperator>(E)) {
  // Do a somewhat different check with comparison operators.
  if (BO->isComparisonOp())
    return AnalyzeComparison(S, BO);

  // And with simple assignments.
  if (BO->getOpcode() == BO_Assign)
    return AnalyzeAssignment(S, BO);
  // And with compound assignments.
  if (BO->isAssignmentOp())
    return AnalyzeCompoundAssignment(S, BO);
}

// These break the otherwise-useful invariant below.  Fortunately,
// we don't really need to recurse into them, because any internal
// expressions should have been analyzed already when they were
// built into statements.
if (isa<StmtExpr>(E)) return;

// Don't descend into unevaluated contexts.
if (isa<UnaryExprOrTypeTraitExpr>(E)) return;

// Now just recurse over the expression's children.
CC = E->getExprLoc();
BinaryOperator *BO = dyn_cast<BinaryOperator>(E);
bool IsLogicalAndOperator = BO && BO->getOpcode() == BO_LAnd;
for (Stmt *SubStmt : E->children()) {
  Expr *ChildExpr = dyn_cast_or_null<Expr>(SubStmt);
  if (!ChildExpr)
    continue;

  if (IsLogicalAndOperator &&
      isa<StringLiteral>(ChildExpr->IgnoreParenImpCasts()))
    // Ignore checking string literals that are in logical and operators.
    // This is a common pattern for asserts.
    continue;
  AnalyzeImplicitConversions(S, ChildExpr, CC);
}

if (BO && BO->isLogicalOp()) {
  Expr *SubExpr = BO->getLHS()->IgnoreParenImpCasts();
  if (!IsLogicalAndOperator || !isa<StringLiteral>(SubExpr))
    ::CheckBoolLikeConversion(S, SubExpr, BO->getExprLoc());

  SubExpr = BO->getRHS()->IgnoreParenImpCasts();
  if (!IsLogicalAndOperator || !isa<StringLiteral>(SubExpr))
    ::CheckBoolLikeConversion(S, SubExpr, BO->getExprLoc());
}

if (const UnaryOperator *U = dyn_cast<UnaryOperator>(E)) {
  if (U->getOpcode() == UO_LNot) {
    ::CheckBoolLikeConversion(S, U->getSubExpr(), CC);
  } else if (U->getOpcode() != UO_AddrOf) {
    if (U->getSubExpr()->getType()->isAtomicType())
      S.Diag(U->getSubExpr()->getBeginLoc(),
             diag::warn_atomic_implicit_seq_cst);
  }
}
11611}

11613/// Diagnose integer type and any valid implicit conversion to it.
11614static bool checkOpenCLEnqueueIntType(Sema &S, Expr *E, const QualType &IntT) {
// Taking into account implicit conversions,
// allow any integer.
if (!E->getType()->isIntegerType()) {
  S.Diag(E->getBeginLoc(),
         diag::err_opencl_enqueue_kernel_invalid_local_size_type);
  return true;
}
// Potentially emit standard warnings for implicit conversions if enabled
// using -Wconversion.
CheckImplicitConversion(S, E, IntT, E->getBeginLoc());
return false;
11626}

11628// Helper function for Sema::DiagnoseAlwaysNonNullPointer.
11629// Returns true when emitting a warning about taking the address of a reference.
11630static bool CheckForReference(Sema &SemaRef, const Expr *E,
                            const PartialDiagnostic &PD) {
E = E->IgnoreParenImpCasts();

const FunctionDecl *FD = nullptr;

if (const DeclRefExpr *DRE = dyn_cast<DeclRefExpr>(E)) {
  if (!DRE->getDecl()->getType()->isReferenceType())
    return false;
} else if (const MemberExpr *M = dyn_cast<MemberExpr>(E)) {
  if (!M->getMemberDecl()->getType()->isReferenceType())
    return false;
} else if (const CallExpr *Call = dyn_cast<CallExpr>(E)) {
  if (!Call->getCallReturnType(SemaRef.Context)->isReferenceType())
    return false;
  FD = Call->getDirectCallee();
} else {
  return false;
}

SemaRef.Diag(E->getExprLoc(), PD);

// If possible, point to location of function.
if (FD) {
  SemaRef.Diag(FD->getLocation(), diag::note_reference_is_return_value) << FD;
}

return true;
11658}

11660// Returns true if the SourceLocation is expanded from any macro body.
11661// Returns false if the SourceLocation is invalid, is from not in a macro
11662// expansion, or is from expanded from a top-level macro argument.
11663static bool IsInAnyMacroBody(const SourceManager &SM, SourceLocation Loc) {
if (Loc.isInvalid())
  return false;

while (Loc.isMacroID()) {
  if (SM.isMacroBodyExpansion(Loc))
    return true;
  Loc = SM.getImmediateMacroCallerLoc(Loc);
}

return false;
11674}

11676/// Diagnose pointers that are always non-null.
11677/// \param E the expression containing the pointer
11678/// \param NullKind NPCK_NotNull if E is a cast to bool, otherwise, E is
11679/// compared to a null pointer
11680/// \param IsEqual True when the comparison is equal to a null pointer
11681/// \param Range Extra SourceRange to highlight in the diagnostic
11682void Sema::DiagnoseAlwaysNonNullPointer(Expr *E,
                                      Expr::NullPointerConstantKind NullKind,
                                      bool IsEqual, SourceRange Range) {
if (!E)
  return;

// Don't warn inside macros.
if (E->getExprLoc().isMacroID()) {
  const SourceManager &SM = getSourceManager();
  if (IsInAnyMacroBody(SM, E->getExprLoc()) ||
      IsInAnyMacroBody(SM, Range.getBegin()))
    return;
}
E = E->IgnoreImpCasts();

const bool IsCompare = NullKind != Expr::NPCK_NotNull;

if (isa<CXXThisExpr>(E)) {
  unsigned DiagID = IsCompare ? diag::warn_this_null_compare
                              : diag::warn_this_bool_conversion;
  Diag(E->getExprLoc(), DiagID) << E->getSourceRange() << Range << IsEqual;
  return;
}

bool IsAddressOf = false;

if (UnaryOperator *UO = dyn_cast<UnaryOperator>(E)) {
  if (UO->getOpcode() != UO_AddrOf)
    return;
  IsAddressOf = true;
  E = UO->getSubExpr();
}

if (IsAddressOf) {
  unsigned DiagID = IsCompare
                        ? diag::warn_address_of_reference_null_compare
                        : diag::warn_address_of_reference_bool_conversion;
  PartialDiagnostic PD = PDiag(DiagID) << E->getSourceRange() << Range
                                       << IsEqual;
  if (CheckForReference(*this, E, PD)) {
    return;
  }
}

auto ComplainAboutNonnullParamOrCall = [&](const Attr *NonnullAttr) {
  bool IsParam = isa<NonNullAttr>(NonnullAttr);
  std::string Str;
  llvm::raw_string_ostream S(Str);
  E->printPretty(S, nullptr, getPrintingPolicy());
  unsigned DiagID = IsCompare ? diag::warn_nonnull_expr_compare
                              : diag::warn_cast_nonnull_to_bool;
  Diag(E->getExprLoc(), DiagID) << IsParam << S.str()
    << E->getSourceRange() << Range << IsEqual;
  Diag(NonnullAttr->getLocation(), diag::note_declared_nonnull) << IsParam;
};

// If we have a CallExpr that is tagged with returns_nonnull, we can complain.
if (auto *Call = dyn_cast<CallExpr>(E->IgnoreParenImpCasts())) {
  if (auto *Callee = Call->getDirectCallee()) {
    if (const Attr *A = Callee->getAttr<ReturnsNonNullAttr>()) {
      ComplainAboutNonnullParamOrCall(A);
      return;
    }
  }
}

// Expect to find a single Decl.  Skip anything more complicated.
ValueDecl *D = nullptr;
if (DeclRefExpr *R = dyn_cast<DeclRefExpr>(E)) {
  D = R->getDecl();
} else if (MemberExpr *M = dyn_cast<MemberExpr>(E)) {
  D = M->getMemberDecl();
}

// Weak Decls can be null.
if (!D || D->isWeak())
  return;

// Check for parameter decl with nonnull attribute
if (const auto* PV = dyn_cast<ParmVarDecl>(D)) {
  if (getCurFunction() &&
      !getCurFunction()->ModifiedNonNullParams.count(PV)) {
    if (const Attr *A = PV->getAttr<NonNullAttr>()) {
      ComplainAboutNonnullParamOrCall(A);
      return;
    }

    if (const auto *FD = dyn_cast<FunctionDecl>(PV->getDeclContext())) {
      // Skip function template not specialized yet.
      if (FD->getTemplatedKind() == FunctionDecl::TK_FunctionTemplate)
        return;
      auto ParamIter = llvm::find(FD->parameters(), PV);
      assert(ParamIter != FD->param_end())((ParamIter != FD->param_end()) ? static_cast<void> (
0) : __assert_fail ("ParamIter != FD->param_end()", "/build/llvm-toolchain-snapshot-9~svn362543/tools/clang/lib/Sema/SemaChecking.cpp"
, 11774, __PRETTY_FUNCTION__));
      unsigned ParamNo = std::distance(FD->param_begin(), ParamIter);

      for (const auto *NonNull : FD->specific_attrs<NonNullAttr>()) {
        if (!NonNull->args_size()) {
            ComplainAboutNonnullParamOrCall(NonNull);
            return;
        }

        for (const ParamIdx &ArgNo : NonNull->args()) {
          if (ArgNo.getASTIndex() == ParamNo) {
            ComplainAboutNonnullParamOrCall(NonNull);
            return;
          }
        }
      }
    }
  }
}

QualType T = D->getType();
const bool IsArray = T->isArrayType();
const bool IsFunction = T->isFunctionType();

// Address of function is used to silence the function warning.
if (IsAddressOf && IsFunction) {
  return;
}

// Found nothing.
if (!IsAddressOf && !IsFunction && !IsArray)
  return;

// Pretty print the expression for the diagnostic.
std::string Str;
llvm::raw_string_ostream S(Str);
E->printPretty(S, nullptr, getPrintingPolicy());

unsigned DiagID = IsCompare ? diag::warn_null_pointer_compare
                            : diag::warn_impcast_pointer_to_bool;
enum {
  AddressOf,
  FunctionPointer,
  ArrayPointer
} DiagType;
if (IsAddressOf)
  DiagType = AddressOf;
else if (IsFunction)
  DiagType = FunctionPointer;
else if (IsArray)
  DiagType = ArrayPointer;
else
  llvm_unreachable("Could not determine diagnostic.")::llvm::llvm_unreachable_internal("Could not determine diagnostic."
, "/build/llvm-toolchain-snapshot-9~svn362543/tools/clang/lib/Sema/SemaChecking.cpp"
, 11826);
Diag(E->getExprLoc(), DiagID) << DiagType << S.str() << E->getSourceRange()
                              << Range << IsEqual;

if (!IsFunction)
  return;

// Suggest '&' to silence the function warning.
Diag(E->getExprLoc(), diag::note_function_warning_silence)
    << FixItHint::CreateInsertion(E->getBeginLoc(), "&");

// Check to see if '()' fixit should be emitted.
QualType ReturnType;
UnresolvedSet<4> NonTemplateOverloads;
tryExprAsCall(*E, ReturnType, NonTemplateOverloads);
if (ReturnType.isNull())
  return;

if (IsCompare) {
  // There are two cases here.  If there is null constant, the only suggest
  // for a pointer return type.  If the null is 0, then suggest if the return
  // type is a pointer or an integer type.
  if (!ReturnType->isPointerType()) {
    if (NullKind == Expr::NPCK_ZeroExpression ||
        NullKind == Expr::NPCK_ZeroLiteral) {
      if (!ReturnType->isIntegerType())
        return;
    } else {
      return;
    }
  }
} else { // !IsCompare
  // For function to bool, only suggest if the function pointer has bool
  // return type.
  if (!ReturnType->isSpecificBuiltinType(BuiltinType::Bool))
    return;
}
Diag(E->getExprLoc(), diag::note_function_to_function_call)
    << FixItHint::CreateInsertion(getLocForEndOfToken(E->getEndLoc()), "()");
11865}

11867/// Diagnoses "dangerous" implicit conversions within the given
11868/// expression (which is a full expression).  Implements -Wconversion
11869/// and -Wsign-compare.
11870///
11871/// \param CC the "context" location of the implicit conversion, i.e.
11872///   the most location of the syntactic entity requiring the implicit
11873///   conversion
11874void Sema::CheckImplicitConversions(Expr *E, SourceLocation CC) {
// Don't diagnose in unevaluated contexts.
if (isUnevaluatedContext())
  return;

// Don't diagnose for value- or type-dependent expressions.
if (E->isTypeDependent() || E->isValueDependent())
  return;

// Check for array bounds violations in cases where the check isn't triggered
// elsewhere for other Expr types (like BinaryOperators), e.g. when an
// ArraySubscriptExpr is on the RHS of a variable initialization.
CheckArrayAccess(E);

// This is not the right CC for (e.g.) a variable initialization.
AnalyzeImplicitConversions(*this, E, CC);
11890}

11892/// CheckBoolLikeConversion - Check conversion of given expression to boolean.
11893/// Input argument E is a logical expression.
11894void Sema::CheckBoolLikeConversion(Expr *E, SourceLocation CC) {
::CheckBoolLikeConversion(*this, E, CC);
11896}

11898/// Diagnose when expression is an integer constant expression and its evaluation
11899/// results in integer overflow
11900void Sema::CheckForIntOverflow (Expr *E) {
// Use a work list to deal with nested struct initializers.
SmallVector<Expr *, 2> Exprs(1, E);

do {
  Expr *OriginalE = Exprs.pop_back_val();
  Expr *E = OriginalE->IgnoreParenCasts();

  if (isa<BinaryOperator>(E)) {
    E->EvaluateForOverflow(Context);
    continue;
  }

  if (auto InitList = dyn_cast<InitListExpr>(OriginalE))
    Exprs.append(InitList->inits().begin(), InitList->inits().end());
  else if (isa<ObjCBoxedExpr>(OriginalE))
    E->EvaluateForOverflow(Context);
  else if (auto Call = dyn_cast<CallExpr>(E))
    Exprs.append(Call->arg_begin(), Call->arg_end());
  else if (auto Message = dyn_cast<ObjCMessageExpr>(E))
    Exprs.append(Message->arg_begin(), Message->arg_end());
} while (!Exprs.empty());
11922}

11924namespace {

11926/// Visitor for expressions which looks for unsequenced operations on the
11927/// same object.
11928class SequenceChecker : public EvaluatedExprVisitor<SequenceChecker> {
using Base = EvaluatedExprVisitor<SequenceChecker>;

/// A tree of sequenced regions within an expression. Two regions are
/// unsequenced if one is an ancestor or a descendent of the other. When we
/// finish processing an expression with sequencing, such as a comma
/// expression, we fold its tree nodes into its parent, since they are
/// unsequenced with respect to nodes we will visit later.
class SequenceTree {
  struct Value {
    explicit Value(unsigned Parent) : Parent(Parent), Merged(false) {}
    unsigned Parent : 31;
    unsigned Merged : 1;
  };
  SmallVector<Value, 8> Values;

public:
  /// A region within an expression which may be sequenced with respect
  /// to some other region.
  class Seq {
    friend class SequenceTree;

    unsigned Index;

    explicit Seq(unsigned N) : Index(N) {}

  public:
    Seq() : Index(0) {}
  };

  SequenceTree() { Values.push_back(Value(0)); }
  Seq root() const { return Seq(0); }

  /// Create a new sequence of operations, which is an unsequenced
  /// subset of \p Parent. This sequence of operations is sequenced with
  /// respect to other children of \p Parent.
  Seq allocate(Seq Parent) {
    Values.push_back(Value(Parent.Index));
    return Seq(Values.size() - 1);
  }

  /// Merge a sequence of operations into its parent.
  void merge(Seq S) {
    Values[S.Index].Merged = true;
  }

  /// Determine whether two operations are unsequenced. This operation
  /// is asymmetric: \p Cur should be the more recent sequence, and \p Old
  /// should have been merged into its parent as appropriate.
  bool isUnsequenced(Seq Cur, Seq Old) {
    unsigned C = representative(Cur.Index);
    unsigned Target = representative(Old.Index);
    while (C >= Target) {
      if (C == Target)
        return true;
      C = Values[C].Parent;
    }
    return false;
  }

private:
  /// Pick a representative for a sequence.
  unsigned representative(unsigned K) {
    if (Values[K].Merged)
      // Perform path compression as we go.
      return Values[K].Parent = representative(Values[K].Parent);
    return K;
  }
};

/// An object for which we can track unsequenced uses.
using Object = NamedDecl *;

/// Different flavors of object usage which we track. We only track the
/// least-sequenced usage of each kind.
enum UsageKind {
  /// A read of an object. Multiple unsequenced reads are OK.
  UK_Use,

  /// A modification of an object which is sequenced before the value
  /// computation of the expression, such as ++n in C++.
  UK_ModAsValue,

  /// A modification of an object which is not sequenced before the value
  /// computation of the expression, such as n++.
  UK_ModAsSideEffect,

  UK_Count = UK_ModAsSideEffect + 1
};

struct Usage {
  Expr *Use;
  SequenceTree::Seq Seq;

  Usage() : Use(nullptr), Seq() {}
};

struct UsageInfo {
  Usage Uses[UK_Count];

  /// Have we issued a diagnostic for this variable already?
  bool Diagnosed;

  UsageInfo() : Uses(), Diagnosed(false) {}
};
using UsageInfoMap = llvm::SmallDenseMap<Object, UsageInfo, 16>;

Sema &SemaRef;

/// Sequenced regions within the expression.
SequenceTree Tree;

/// Declaration modifications and references which we have seen.
UsageInfoMap UsageMap;

/// The region we are currently within.
SequenceTree::Seq Region;

/// Filled in with declarations which were modified as a side-effect
/// (that is, post-increment operations).
SmallVectorImpl<std::pair<Object, Usage>> *ModAsSideEffect = nullptr;

/// Expressions to check later. We defer checking these to reduce
/// stack usage.
SmallVectorImpl<Expr *> &WorkList;

/// RAII object wrapping the visitation of a sequenced subexpression of an
/// expression. At the end of this process, the side-effects of the evaluation
/// become sequenced with respect to the value computation of the result, so
/// we downgrade any UK_ModAsSideEffect within the evaluation to
/// UK_ModAsValue.
struct SequencedSubexpression {
  SequencedSubexpression(SequenceChecker &Self)
    : Self(Self), OldModAsSideEffect(Self.ModAsSideEffect) {
    Self.ModAsSideEffect = &ModAsSideEffect;
  }

  ~SequencedSubexpression() {
    for (auto &M : llvm::reverse(ModAsSideEffect)) {
      UsageInfo &U = Self.UsageMap[M.first];
      auto &SideEffectUsage = U.Uses[UK_ModAsSideEffect];
      Self.addUsage(U, M.first, SideEffectUsage.Use, UK_ModAsValue);
      SideEffectUsage = M.second;
    }
    Self.ModAsSideEffect = OldModAsSideEffect;
  }

  SequenceChecker &Self;
  SmallVector<std::pair<Object, Usage>, 4> ModAsSideEffect;
  SmallVectorImpl<std::pair<Object, Usage>> *OldModAsSideEffect;
};

/// RAII object wrapping the visitation of a subexpression which we might
/// choose to evaluate as a constant. If any subexpression is evaluated and
/// found to be non-constant, this allows us to suppress the evaluation of
/// the outer expression.
class EvaluationTracker {
public:
  EvaluationTracker(SequenceChecker &Self)
      : Self(Self), Prev(Self.EvalTracker) {
    Self.EvalTracker = this;
  }

  ~EvaluationTracker() {
    Self.EvalTracker = Prev;
    if (Prev)
      Prev->EvalOK &= EvalOK;
  }

  bool evaluate(const Expr *E, bool &Result) {
    if (!EvalOK || E->isValueDependent())
      return false;
    EvalOK = E->EvaluateAsBooleanCondition(Result, Self.SemaRef.Context);
    return EvalOK;
  }

private:
  SequenceChecker &Self;
  EvaluationTracker *Prev;
  bool EvalOK = true;
} *EvalTracker = nullptr;

/// Find the object which is produced by the specified expression,
/// if any.
Object getObject(Expr *E, bool Mod) const {
  E = E->IgnoreParenCasts();
  if (UnaryOperator *UO = dyn_cast<UnaryOperator>(E)) {
    if (Mod && (UO->getOpcode() == UO_PreInc || UO->getOpcode() == UO_PreDec))
      return getObject(UO->getSubExpr(), Mod);
  } else if (BinaryOperator *BO = dyn_cast<BinaryOperator>(E)) {
    if (BO->getOpcode() == BO_Comma)
      return getObject(BO->getRHS(), Mod);
    if (Mod && BO->isAssignmentOp())
      return getObject(BO->getLHS(), Mod);
  } else if (MemberExpr *ME = dyn_cast<MemberExpr>(E)) {
    // FIXME: Check for more interesting cases, like "x.n = ++x.n".
    if (isa<CXXThisExpr>(ME->getBase()->IgnoreParenCasts()))
      return ME->getMemberDecl();
  } else if (DeclRefExpr *DRE = dyn_cast<DeclRefExpr>(E))
    // FIXME: If this is a reference, map through to its value.
    return DRE->getDecl();
  return nullptr;
}

/// Note that an object was modified or used by an expression.
void addUsage(UsageInfo &UI, Object O, Expr *Ref, UsageKind UK) {
  Usage &U = UI.Uses[UK];
  if (!U.Use || !Tree.isUnsequenced(Region, U.Seq)) {
    if (UK == UK_ModAsSideEffect && ModAsSideEffect)
      ModAsSideEffect->push_back(std::make_pair(O, U));
    U.Use = Ref;
    U.Seq = Region;
  }
}

/// Check whether a modification or use conflicts with a prior usage.
void checkUsage(Object O, UsageInfo &UI, Expr *Ref, UsageKind OtherKind,
                bool IsModMod) {
  if (UI.Diagnosed)
    return;

  const Usage &U = UI.Uses[OtherKind];
  if (!U.Use || !Tree.isUnsequenced(Region, U.Seq))
    return;

  Expr *Mod = U.Use;
  Expr *ModOrUse = Ref;
  if (OtherKind == UK_Use)
    std::swap(Mod, ModOrUse);

  SemaRef.DiagRuntimeBehavior(
      Mod->getExprLoc(), {Mod, ModOrUse},
      SemaRef.PDiag(IsModMod ? diag::warn_unsequenced_mod_mod
                             : diag::warn_unsequenced_mod_use)
          << O << SourceRange(ModOrUse->getExprLoc()));
  UI.Diagnosed = true;
}

void notePreUse(Object O, Expr *Use) {
  UsageInfo &U = UsageMap[O];
  // Uses conflict with other modifications.
  checkUsage(O, U, Use, UK_ModAsValue, false);
}

void notePostUse(Object O, Expr *Use) {
  UsageInfo &U = UsageMap[O];
  checkUsage(O, U, Use, UK_ModAsSideEffect, false);
  addUsage(U, O, Use, UK_Use);
}

void notePreMod(Object O, Expr *Mod) {
  UsageInfo &U = UsageMap[O];
  // Modifications conflict with other modifications and with uses.
  checkUsage(O, U, Mod, UK_ModAsValue, true);
  checkUsage(O, U, Mod, UK_Use, false);
}

void notePostMod(Object O, Expr *Use, UsageKind UK) {
  UsageInfo &U = UsageMap[O];
  checkUsage(O, U, Use, UK_ModAsSideEffect, true);
  addUsage(U, O, Use, UK);
}

12191public:
SequenceChecker(Sema &S, Expr *E, SmallVectorImpl<Expr *> &WorkList)
    : Base(S.Context), SemaRef(S), Region(Tree.root()), WorkList(WorkList) {
  Visit(E);
}

void VisitStmt(Stmt *S) {
  // Skip all statements which aren't expressions for now.
}

void VisitExpr(Expr *E) {
  // By default, just recurse to evaluated subexpressions.
  Base::VisitStmt(E);
}

void VisitCastExpr(CastExpr *E) {
  Object O = Object();
  if (E->getCastKind() == CK_LValueToRValue)
    O = getObject(E->getSubExpr(), false);

  if (O)
    notePreUse(O, E);
  VisitExpr(E);
  if (O)
    notePostUse(O, E);
}

void VisitSequencedExpressions(Expr *SequencedBefore, Expr *SequencedAfter) {
  SequenceTree::Seq BeforeRegion = Tree.allocate(Region);
  SequenceTree::Seq AfterRegion = Tree.allocate(Region);
  SequenceTree::Seq OldRegion = Region;

  {
    SequencedSubexpression SeqBefore(*this);
    Region = BeforeRegion;
    Visit(SequencedBefore);
  }

  Region = AfterRegion;
  Visit(SequencedAfter);

  Region = OldRegion;

  Tree.merge(BeforeRegion);
  Tree.merge(AfterRegion);
}

void VisitArraySubscriptExpr(ArraySubscriptExpr *ASE) {
  // C++17 [expr.sub]p1:
  //   The expression E1[E2] is identical (by definition) to *((E1)+(E2)). The
  //   expression E1 is sequenced before the expression E2.
  if (SemaRef.getLangOpts().CPlusPlus17)
    VisitSequencedExpressions(ASE->getLHS(), ASE->getRHS());
  else
    Base::VisitStmt(ASE);
}

void VisitBinComma(BinaryOperator *BO) {
  // C++11 [expr.comma]p1:
  //   Every value computation and side effect associated with the left
  //   expression is sequenced before every value computation and side
  //   effect associated with the right expression.
  VisitSequencedExpressions(BO->getLHS(), BO->getRHS());
}

void VisitBinAssign(BinaryOperator *BO) {
  // The modification is sequenced after the value computation of the LHS
  // and RHS, so check it before inspecting the operands and update the
  // map afterwards.
  Object O = getObject(BO->getLHS(), true);
  if (!O)
    return VisitExpr(BO);

  notePreMod(O, BO);

  // C++11 [expr.ass]p7:
  //   E1 op= E2 is equivalent to E1 = E1 op E2, except that E1 is evaluated
  //   only once.
  //
  // Therefore, for a compound assignment operator, O is considered used
  // everywhere except within the evaluation of E1 itself.
  if (isa<CompoundAssignOperator>(BO))
    notePreUse(O, BO);

  Visit(BO->getLHS());

  if (isa<CompoundAssignOperator>(BO))
    notePostUse(O, BO);

  Visit(BO->getRHS());

  // C++11 [expr.ass]p1:
  //   the assignment is sequenced [...] before the value computation of the
  //   assignment expression.
  // C11 6.5.16/3 has no such rule.
  notePostMod(O, BO, SemaRef.getLangOpts().CPlusPlus ? UK_ModAsValue
                                                     : UK_ModAsSideEffect);
}

void VisitCompoundAssignOperator(CompoundAssignOperator *CAO) {
  VisitBinAssign(CAO);
}

void VisitUnaryPreInc(UnaryOperator *UO) { VisitUnaryPreIncDec(UO); }
void VisitUnaryPreDec(UnaryOperator *UO) { VisitUnaryPreIncDec(UO); }
void VisitUnaryPreIncDec(UnaryOperator *UO) {
  Object O = getObject(UO->getSubExpr(), true);
  if (!O)
    return VisitExpr(UO);

  notePreMod(O, UO);
  Visit(UO->getSubExpr());
  // C++11 [expr.pre.incr]p1:
  //   the expression ++x is equivalent to x+=1
  notePostMod(O, UO, SemaRef.getLangOpts().CPlusPlus ? UK_ModAsValue
                                                     : UK_ModAsSideEffect);
}

void VisitUnaryPostInc(UnaryOperator *UO) { VisitUnaryPostIncDec(UO); }
void VisitUnaryPostDec(UnaryOperator *UO) { VisitUnaryPostIncDec(UO); }
void VisitUnaryPostIncDec(UnaryOperator *UO) {
  Object O = getObject(UO->getSubExpr(), true);
  if (!O)
    return VisitExpr(UO);

  notePreMod(O, UO);
  Visit(UO->getSubExpr());
  notePostMod(O, UO, UK_ModAsSideEffect);
}

/// Don't visit the RHS of '&&' or '||' if it might not be evaluated.
void VisitBinLOr(BinaryOperator *BO) {
  // The side-effects of the LHS of an '&&' are sequenced before the
  // value computation of the RHS, and hence before the value computation
  // of the '&&' itself, unless the LHS evaluates to zero. We treat them
  // as if they were unconditionally sequenced.
  EvaluationTracker Eval(*this);
  {
    SequencedSubexpression Sequenced(*this);
    Visit(BO->getLHS());
  }

  bool Result;
  if (Eval.evaluate(BO->getLHS(), Result)) {
    if (!Result)
      Visit(BO->getRHS());
  } else {
    // Check for unsequenced operations in the RHS, treating it as an
    // entirely separate evaluation.
    //
    // FIXME: If there are operations in the RHS which are unsequenced
    // with respect to operations outside the RHS, and those operations
    // are unconditionally evaluated, diagnose them.
    WorkList.push_back(BO->getRHS());
  }
}
void VisitBinLAnd(BinaryOperator *BO) {
  EvaluationTracker Eval(*this);
  {
    SequencedSubexpression Sequenced(*this);
    Visit(BO->getLHS());
  }

  bool Result;
  if (Eval.evaluate(BO->getLHS(), Result)) {
    if (Result)
      Visit(BO->getRHS());
  } else {
    WorkList.push_back(BO->getRHS());
  }
}

// Only visit the condition, unless we can be sure which subexpression will
// be chosen.
void VisitAbstractConditionalOperator(AbstractConditionalOperator *CO) {
  EvaluationTracker Eval(*this);
  {
    SequencedSubexpression Sequenced(*this);
    Visit(CO->getCond());
  }

  bool Result;
  if (Eval.evaluate(CO->getCond(), Result))
    Visit(Result ? CO->getTrueExpr() : CO->getFalseExpr());
  else {
    WorkList.push_back(CO->getTrueExpr());
    WorkList.push_back(CO->getFalseExpr());
  }
}

void VisitCallExpr(CallExpr *CE) {
  // C++11 [intro.execution]p15:
  //   When calling a function [...], every value computation and side effect
  //   associated with any argument expression, or with the postfix expression
  //   designating the called function, is sequenced before execution of every
  //   expression or statement in the body of the function [and thus before
  //   the value computation of its result].
  SequencedSubexpression Sequenced(*this);
  Base::VisitCallExpr(CE);

  // FIXME: CXXNewExpr and CXXDeleteExpr implicitly call functions.
}

void VisitCXXConstructExpr(CXXConstructExpr *CCE) {
  // This is a call, so all subexpressions are sequenced before the result.
  SequencedSubexpression Sequenced(*this);

  if (!CCE->isListInitialization())
    return VisitExpr(CCE);

  // In C++11, list initializations are sequenced.
  SmallVector<SequenceTree::Seq, 32> Elts;
  SequenceTree::Seq Parent = Region;
  for (CXXConstructExpr::arg_iterator I = CCE->arg_begin(),
                                      E = CCE->arg_end();
       I != E; ++I) {
    Region = Tree.allocate(Parent);
    Elts.push_back(Region);
    Visit(*I);
  }

  // Forget that the initializers are sequenced.
  Region = Parent;
  for (unsigned I = 0; I < Elts.size(); ++I)
    Tree.merge(Elts[I]);
}

void VisitInitListExpr(InitListExpr *ILE) {
  if (!SemaRef.getLangOpts().CPlusPlus11)
    return VisitExpr(ILE);

  // In C++11, list initializations are sequenced.
  SmallVector<SequenceTree::Seq, 32> Elts;
  SequenceTree::Seq Parent = Region;
  for (unsigned I = 0; I < ILE->getNumInits(); ++I) {
    Expr *E = ILE->getInit(I);
    if (!E) continue;
    Region = Tree.allocate(Parent);
    Elts.push_back(Region);
    Visit(E);
  }

  // Forget that the initializers are sequenced.
  Region = Parent;
  for (unsigned I = 0; I < Elts.size(); ++I)
    Tree.merge(Elts[I]);
}
12438};

12440} // namespace

12442void Sema::CheckUnsequencedOperations(Expr *E) {
SmallVector<Expr *, 8> WorkList;
WorkList.push_back(E);
while (!WorkList.empty()) {
  Expr *Item = WorkList.pop_back_val();
  SequenceChecker(*this, Item, WorkList);
}
12449}

12451void Sema::CheckCompletedExpr(Expr *E, SourceLocation CheckLoc,
                            bool IsConstexpr) {
CheckImplicitConversions(E, CheckLoc);
if (!E->isInstantiationDependent())
  CheckUnsequencedOperations(E);
if (!IsConstexpr && !E->isValueDependent())
  CheckForIntOverflow(E);
DiagnoseMisalignedMembers();
12459}

12461void Sema::CheckBitFieldInitialization(SourceLocation InitLoc,
                                     FieldDecl *BitField,
                                     Expr *Init) {
(void) AnalyzeBitFieldAssignment(*this, BitField, Init, InitLoc);
12465}

12467static void diagnoseArrayStarInParamType(Sema &S, QualType PType,
                                       SourceLocation Loc) {
if (!PType->isVariablyModifiedType())
  return;
if (const auto *PointerTy = dyn_cast<PointerType>(PType)) {
  diagnoseArrayStarInParamType(S, PointerTy->getPointeeType(), Loc);
  return;
}
if (const auto *ReferenceTy = dyn_cast<ReferenceType>(PType)) {
  diagnoseArrayStarInParamType(S, ReferenceTy->getPointeeType(), Loc);
  return;
}
if (const auto *ParenTy = dyn_cast<ParenType>(PType)) {
  diagnoseArrayStarInParamType(S, ParenTy->getInnerType(), Loc);
  return;
}

const ArrayType *AT = S.Context.getAsArrayType(PType);
if (!AT)
  return;

if (AT->getSizeModifier() != ArrayType::Star) {
  diagnoseArrayStarInParamType(S, AT->getElementType(), Loc);
  return;
}

S.Diag(Loc, diag::err_array_star_in_function_definition);
12494}

12496/// CheckParmsForFunctionDef - Check that the parameters of the given
12497/// function are appropriate for the definition of a function. This
12498/// takes care of any checks that cannot be performed on the
12499/// declaration itself, e.g., that the types of each of the function
12500/// parameters are complete.
12501bool Sema::CheckParmsForFunctionDef(ArrayRef<ParmVarDecl *> Parameters,
                                  bool CheckParameterNames) {
bool HasInvalidParm = false;
for (ParmVarDecl *Param : Parameters) {
  // C99 6.7.5.3p4: the parameters in a parameter type list in a
  // function declarator that is part of a function definition of
  // that function shall not have incomplete type.
  //
  // This is also C++ [dcl.fct]p6.
  if (!Param->isInvalidDecl() &&
      RequireCompleteType(Param->getLocation(), Param->getType(),
                          diag::err_typecheck_decl_incomplete_type)) {
    Param->setInvalidDecl();
    HasInvalidParm = true;
  }

  // C99 6.9.1p5: If the declarator includes a parameter type list, the
  // declaration of each parameter shall include an identifier.
  if (CheckParameterNames &&
      Param->getIdentifier() == nullptr &&
      !Param->isImplicit() &&
      !getLangOpts().CPlusPlus)
    Diag(Param->getLocation(), diag::err_parameter_name_omitted);

  // C99 6.7.5.3p12:
  //   If the function declarator is not part of a definition of that
  //   function, parameters may have incomplete type and may use the [*]
  //   notation in their sequences of declarator specifiers to specify
  //   variable length array types.
  QualType PType = Param->getOriginalType();
  // FIXME: This diagnostic should point the '[*]' if source-location
  // information is added for it.
  diagnoseArrayStarInParamType(*this, PType, Param->getLocation());

  // If the parameter is a c++ class type and it has to be destructed in the
  // callee function, declare the destructor so that it can be called by the
  // callee function. Do not perform any direct access check on the dtor here.
  if (!Param->isInvalidDecl()) {
    if (CXXRecordDecl *ClassDecl = Param->getType()->getAsCXXRecordDecl()) {
      if (!ClassDecl->isInvalidDecl() &&
          !ClassDecl->hasIrrelevantDestructor() &&
          !ClassDecl->isDependentContext() &&
          ClassDecl->isParamDestroyedInCallee()) {
        CXXDestructorDecl *Destructor = LookupDestructor(ClassDecl);
        MarkFunctionReferenced(Param->getLocation(), Destructor);
        DiagnoseUseOfDecl(Destructor, Param->getLocation());
      }
    }
  }

  // Parameters with the pass_object_size attribute only need to be marked
  // constant at function definitions. Because we lack information about
  // whether we're on a declaration or definition when we're instantiating the
  // attribute, we need to check for constness here.
  if (const auto *Attr = Param->getAttr<PassObjectSizeAttr>())
    if (!Param->getType().isConstQualified())
      Diag(Param->getLocation(), diag::err_attribute_pointers_only)
          << Attr->getSpelling() << 1;

  // Check for parameter names shadowing fields from the class.
  if (LangOpts.CPlusPlus && !Param->isInvalidDecl()) {
    // The owning context for the parameter should be the function, but we
    // want to see if this function's declaration context is a record.
    DeclContext *DC = Param->getDeclContext();
    if (DC && DC->isFunctionOrMethod()) {
      if (auto *RD = dyn_cast<CXXRecordDecl>(DC->getParent()))
        CheckShadowInheritedFields(Param->getLocation(), Param->getDeclName(),
                                   RD, /*DeclIsField*/ false);
    }
  }
}

return HasInvalidParm;
12574}

12576/// A helper function to get the alignment of a Decl referred to by DeclRefExpr
12577/// or MemberExpr.
12578static CharUnits getDeclAlign(Expr *E, CharUnits TypeAlign,
                            ASTContext &Context) {
if (const auto *DRE = dyn_cast<DeclRefExpr>(E))
  return Context.getDeclAlign(DRE->getDecl());

if (const auto *ME = dyn_cast<MemberExpr>(E))
  return Context.getDeclAlign(ME->getMemberDecl());

return TypeAlign;
12587}

12589/// CheckCastAlign - Implements -Wcast-align, which warns when a
12590/// pointer cast increases the alignment requirements.
12591void Sema::CheckCastAlign(Expr *Op, QualType T, SourceRange TRange) {
// This is actually a lot of work to potentially be doing on every
// cast; don't do it if we're ignoring -Wcast_align (as is the default).
if (getDiagnostics().isIgnored(diag::warn_cast_align, TRange.getBegin()))
  return;

// Ignore dependent types.
if (T->isDependentType() || Op->getType()->isDependentType())
  return;

// Require that the destination be a pointer type.
const PointerType *DestPtr = T->getAs<PointerType>();
if (!DestPtr) return;

// If the destination has alignment 1, we're done.
QualType DestPointee = DestPtr->getPointeeType();
if (DestPointee->isIncompleteType()) return;
CharUnits DestAlign = Context.getTypeAlignInChars(DestPointee);
if (DestAlign.isOne()) return;

// Require that the source be a pointer type.
const PointerType *SrcPtr = Op->getType()->getAs<PointerType>();
if (!SrcPtr) return;
QualType SrcPointee = SrcPtr->getPointeeType();

// Whitelist casts from cv void*.  We already implicitly
// whitelisted casts to cv void*, since they have alignment 1.
// Also whitelist casts involving incomplete types, which implicitly
// includes 'void'.
if (SrcPointee->isIncompleteType()) return;

CharUnits SrcAlign = Context.getTypeAlignInChars(SrcPointee);

if (auto *CE = dyn_cast<CastExpr>(Op)) {
  if (CE->getCastKind() == CK_ArrayToPointerDecay)
    SrcAlign = getDeclAlign(CE->getSubExpr(), SrcAlign, Context);
} else if (auto *UO = dyn_cast<UnaryOperator>(Op)) {
  if (UO->getOpcode() == UO_AddrOf)
    SrcAlign = getDeclAlign(UO->getSubExpr(), SrcAlign, Context);
}

if (SrcAlign >= DestAlign) return;

Diag(TRange.getBegin(), diag::warn_cast_align)
  << Op->getType() << T
  << static_cast<unsigned>(SrcAlign.getQuantity())
  << static_cast<unsigned>(DestAlign.getQuantity())
  << TRange << Op->getSourceRange();
12639}

12641/// Check whether this array fits the idiom of a size-one tail padded
12642/// array member of a struct.
12643///
12644/// We avoid emitting out-of-bounds access warnings for such arrays as they are
12645/// commonly used to emulate flexible arrays in C89 code.
12646static bool IsTailPaddedMemberArray(Sema &S, const llvm::APInt &Size,
                                  const NamedDecl *ND) {
if (Size != 1 || !ND) return false;

const FieldDecl *FD = dyn_cast<FieldDecl>(ND);
if (!FD) return false;

// Don't consider sizes resulting from macro expansions or template argument
// substitution to form C89 tail-padded arrays.

TypeSourceInfo *TInfo = FD->getTypeSourceInfo();
while (TInfo) {
  TypeLoc TL = TInfo->getTypeLoc();
  // Look through typedefs.
  if (TypedefTypeLoc TTL = TL.getAs<TypedefTypeLoc>()) {
    const TypedefNameDecl *TDL = TTL.getTypedefNameDecl();
    TInfo = TDL->getTypeSourceInfo();
    continue;
  }
  if (ConstantArrayTypeLoc CTL = TL.getAs<ConstantArrayTypeLoc>()) {
    const Expr *SizeExpr = dyn_cast<IntegerLiteral>(CTL.getSizeExpr());
    if (!SizeExpr || SizeExpr->getExprLoc().isMacroID())
      return false;
  }
  break;
}

const RecordDecl *RD = dyn_cast<RecordDecl>(FD->getDeclContext());
if (!RD) return false;
if (RD->isUnion()) return false;
if (const CXXRecordDecl *CRD = dyn_cast<CXXRecordDecl>(RD)) {
  if (!CRD->isStandardLayout()) return false;
}

// See if this is the last field decl in the record.
const Decl *D = FD;
while ((D = D->getNextDeclInContext()))
  if (isa<FieldDecl>(D))
    return false;
return true;
12686}

12688void Sema::CheckArrayAccess(const Expr *BaseExpr, const Expr *IndexExpr,
                          const ArraySubscriptExpr *ASE,
                          bool AllowOnePastEnd, bool IndexNegated) {
IndexExpr = IndexExpr->IgnoreParenImpCasts();
if (IndexExpr->isValueDependent())
  return;

const Type *EffectiveType =
    BaseExpr->getType()->getPointeeOrArrayElementType();
BaseExpr = BaseExpr->IgnoreParenCasts();
const ConstantArrayType *ArrayTy =
    Context.getAsConstantArrayType(BaseExpr->getType());

if (!ArrayTy)
  return;

const Type *BaseType = ArrayTy->getElementType().getTypePtr();
if (EffectiveType->isDependentType() || BaseType->isDependentType())
  return;

Expr::EvalResult Result;
if (!IndexExpr->EvaluateAsInt(Result, Context, Expr::SE_AllowSideEffects))
  return;

llvm::APSInt index = Result.Val.getInt();
if (IndexNegated)
  index = -index;

const NamedDecl *ND = nullptr;
if (const DeclRefExpr *DRE = dyn_cast<DeclRefExpr>(BaseExpr))
  ND = DRE->getDecl();
if (const MemberExpr *ME = dyn_cast<MemberExpr>(BaseExpr))
  ND = ME->getMemberDecl();

if (index.isUnsigned() || !index.isNegative()) {
  // It is possible that the type of the base expression after
  // IgnoreParenCasts is incomplete, even though the type of the base
  // expression before IgnoreParenCasts is complete (see PR39746 for an
  // example). In this case we have no information about whether the array
  // access exceeds the array bounds. However we can still diagnose an array
  // access which precedes the array bounds.
  if (BaseType->isIncompleteType())
    return;

  llvm::APInt size = ArrayTy->getSize();
  if (!size.isStrictlyPositive())
    return;

  if (BaseType != EffectiveType) {
    // Make sure we're comparing apples to apples when comparing index to size
    uint64_t ptrarith_typesize = Context.getTypeSize(EffectiveType);
    uint64_t array_typesize = Context.getTypeSize(BaseType);
    // Handle ptrarith_typesize being zero, such as when casting to void*
    if (!ptrarith_typesize) ptrarith_typesize = 1;
    if (ptrarith_typesize != array_typesize) {
      // There's a cast to a different size type involved
      uint64_t ratio = array_typesize / ptrarith_typesize;
      // TODO: Be smarter about handling cases where array_typesize is not a
      // multiple of ptrarith_typesize
      if (ptrarith_typesize * ratio == array_typesize)
        size *= llvm::APInt(size.getBitWidth(), ratio);
    }
  }

  if (size.getBitWidth() > index.getBitWidth())
    index = index.zext(size.getBitWidth());
  else if (size.getBitWidth() < index.getBitWidth())
    size = size.zext(index.getBitWidth());

  // For array subscripting the index must be less than size, but for pointer
  // arithmetic also allow the index (offset) to be equal to size since
  // computing the next address after the end of the array is legal and
  // commonly done e.g. in C++ iterators and range-based for loops.
  if (AllowOnePastEnd ? index.ule(size) : index.ult(size))
    return;

  // Also don't warn for arrays of size 1 which are members of some
  // structure. These are often used to approximate flexible arrays in C89
  // code.
  if (IsTailPaddedMemberArray(*this, size, ND))
    return;

  // Suppress the warning if the subscript expression (as identified by the
  // ']' location) and the index expression are both from macro expansions
  // within a system header.
  if (ASE) {
    SourceLocation RBracketLoc = SourceMgr.getSpellingLoc(
        ASE->getRBracketLoc());
    if (SourceMgr.isInSystemHeader(RBracketLoc)) {
      SourceLocation IndexLoc =
          SourceMgr.getSpellingLoc(IndexExpr->getBeginLoc());
      if (SourceMgr.isWrittenInSameFile(RBracketLoc, IndexLoc))
        return;
    }
  }

  unsigned DiagID = diag::warn_ptr_arith_exceeds_bounds;
  if (ASE)
    DiagID = diag::warn_array_index_exceeds_bounds;

  DiagRuntimeBehavior(BaseExpr->getBeginLoc(), BaseExpr,
                      PDiag(DiagID) << index.toString(10, true)
                                    << size.toString(10, true)
                                    << (unsigned)size.getLimitedValue(~0U)
                                    << IndexExpr->getSourceRange());
} else {
  unsigned DiagID = diag::warn_array_index_precedes_bounds;
  if (!ASE) {
    DiagID = diag::warn_ptr_arith_precedes_bounds;
    if (index.isNegative()) index = -index;
  }

  DiagRuntimeBehavior(BaseExpr->getBeginLoc(), BaseExpr,
                      PDiag(DiagID) << index.toString(10, true)
                                    << IndexExpr->getSourceRange());
}

if (!ND) {
  // Try harder to find a NamedDecl to point at in the note.
  while (const ArraySubscriptExpr *ASE =
         dyn_cast<ArraySubscriptExpr>(BaseExpr))
    BaseExpr = ASE->getBase()->IgnoreParenCasts();
  if (const DeclRefExpr *DRE = dyn_cast<DeclRefExpr>(BaseExpr))
    ND = DRE->getDecl();
  if (const MemberExpr *ME = dyn_cast<MemberExpr>(BaseExpr))
    ND = ME->getMemberDecl();
}

if (ND)
  DiagRuntimeBehavior(ND->getBeginLoc(), BaseExpr,
                      PDiag(diag::note_array_index_out_of_bounds)
                          << ND->getDeclName());
12820}

12822void Sema::CheckArrayAccess(const Expr *expr) {
int AllowOnePastEnd = 0;
while (expr) {
  expr = expr->IgnoreParenImpCasts();
  switch (expr->getStmtClass()) {
    case Stmt::ArraySubscriptExprClass: {
      const ArraySubscriptExpr *ASE = cast<ArraySubscriptExpr>(expr);
      CheckArrayAccess(ASE->getBase(), ASE->getIdx(), ASE,
                       AllowOnePastEnd > 0);
      expr = ASE->getBase();
      break;
    }
    case Stmt::MemberExprClass: {
      expr = cast<MemberExpr>(expr)->getBase();
      break;
    }
    case Stmt::OMPArraySectionExprClass: {
      const OMPArraySectionExpr *ASE = cast<OMPArraySectionExpr>(expr);
      if (ASE->getLowerBound())
        CheckArrayAccess(ASE->getBase(), ASE->getLowerBound(),
                         /*ASE=*/nullptr, AllowOnePastEnd > 0);
      return;
    }
    case Stmt::UnaryOperatorClass: {
      // Only unwrap the * and & unary operators
      const UnaryOperator *UO = cast<UnaryOperator>(expr);
      expr = UO->getSubExpr();
      switch (UO->getOpcode()) {
        case UO_AddrOf:
          AllowOnePastEnd++;
          break;
        case UO_Deref:
          AllowOnePastEnd--;
          break;
        default:
          return;
      }
      break;
    }
    case Stmt::ConditionalOperatorClass: {
      const ConditionalOperator *cond = cast<ConditionalOperator>(expr);
      if (const Expr *lhs = cond->getLHS())
        CheckArrayAccess(lhs);
      if (const Expr *rhs = cond->getRHS())
        CheckArrayAccess(rhs);
      return;
    }
    case Stmt::CXXOperatorCallExprClass: {
      const auto *OCE = cast<CXXOperatorCallExpr>(expr);
      for (const auto *Arg : OCE->arguments())
        CheckArrayAccess(Arg);
      return;
    }
    default:
      return;
  }
}
12879}

12881//===--- CHECK: Objective-C retain cycles ----------------------------------//

12883namespace {

12885struct RetainCycleOwner {
VarDecl *Variable = nullptr;
SourceRange Range;
SourceLocation Loc;
bool Indirect = false;

RetainCycleOwner() = default;

void setLocsFrom(Expr *e) {
  Loc = e->getExprLoc();
  Range = e->getSourceRange();
}
12897};

12899} // namespace

12901/// Consider whether capturing the given variable can possibly lead to
12902/// a retain cycle.
12903static bool considerVariable(VarDecl *var, Expr *ref, RetainCycleOwner &owner) {
// In ARC, it's captured strongly iff the variable has __strong
// lifetime.  In MRR, it's captured strongly if the variable is
// __block and has an appropriate type.
if (var->getType().getObjCLifetime() != Qualifiers::OCL_Strong)
  return false;

owner.Variable = var;
if (ref)
  owner.setLocsFrom(ref);
return true;
12914}

12916static bool findRetainCycleOwner(Sema &S, Expr *e, RetainCycleOwner &owner) {
while (true) {
  e = e->IgnoreParens();
  if (CastExpr *cast = dyn_cast<CastExpr>(e)) {
    switch (cast->getCastKind()) {
    case CK_BitCast:
    case CK_LValueBitCast:
    case CK_LValueToRValue:
    case CK_ARCReclaimReturnedObject:
      e = cast->getSubExpr();
      continue;

    default:
      return false;
    }
  }

  if (ObjCIvarRefExpr *ref = dyn_cast<ObjCIvarRefExpr>(e)) {
    ObjCIvarDecl *ivar = ref->getDecl();
    if (ivar->getType().getObjCLifetime() != Qualifiers::OCL_Strong)
      return false;

    // Try to find a retain cycle in the base.
    if (!findRetainCycleOwner(S, ref->getBase(), owner))
      return false;

    if (ref->isFreeIvar()) owner.setLocsFrom(ref);
    owner.Indirect = true;
    return true;
  }

  if (DeclRefExpr *ref = dyn_cast<DeclRefExpr>(e)) {
    VarDecl *var = dyn_cast<VarDecl>(ref->getDecl());
    if (!var) return false;
    return considerVariable(var, ref, owner);
  }

  if (MemberExpr *member = dyn_cast<MemberExpr>(e)) {
    if (member->isArrow()) return false;

    // Don't count this as an indirect ownership.
    e = member->getBase();
    continue;
  }

  if (PseudoObjectExpr *pseudo = dyn_cast<PseudoObjectExpr>(e)) {
    // Only pay attention to pseudo-objects on property references.
    ObjCPropertyRefExpr *pre
      = dyn_cast<ObjCPropertyRefExpr>(pseudo->getSyntacticForm()
                                            ->IgnoreParens());
    if (!pre) return false;
    if (pre->isImplicitProperty()) return false;
    ObjCPropertyDecl *property = pre->getExplicitProperty();
    if (!property->isRetaining() &&
        !(property->getPropertyIvarDecl() &&
          property->getPropertyIvarDecl()->getType()
            .getObjCLifetime() == Qualifiers::OCL_Strong))
        return false;

    owner.Indirect = true;
    if (pre->isSuperReceiver()) {
      owner.Variable = S.getCurMethodDecl()->getSelfDecl();
      if (!owner.Variable)
        return false;
      owner.Loc = pre->getLocation();
      owner.Range = pre->getSourceRange();
      return true;
    }
    e = const_cast<Expr*>(cast<OpaqueValueExpr>(pre->getBase())
                            ->getSourceExpr());
    continue;
  }

  // Array ivars?

  return false;
}
12993}

12995namespace {

struct FindCaptureVisitor : EvaluatedExprVisitor<FindCaptureVisitor> {
  ASTContext &Context;
  VarDecl *Variable;
  Expr *Capturer = nullptr;
  bool VarWillBeReased = false;

  FindCaptureVisitor(ASTContext &Context, VarDecl *variable)
      : EvaluatedExprVisitor<FindCaptureVisitor>(Context),
        Context(Context), Variable(variable) {}

  void VisitDeclRefExpr(DeclRefExpr *ref) {
    if (ref->getDecl() == Variable && !Capturer)
      Capturer = ref;
  }

  void VisitObjCIvarRefExpr(ObjCIvarRefExpr *ref) {
    if (Capturer) return;
    Visit(ref->getBase());
    if (Capturer && ref->isFreeIvar())
      Capturer = ref;
  }

  void VisitBlockExpr(BlockExpr *block) {
    // Look inside nested blocks
    if (block->getBlockDecl()->capturesVariable(Variable))
      Visit(block->getBlockDecl()->getBody());
  }

  void VisitOpaqueValueExpr(OpaqueValueExpr *OVE) {
    if (Capturer) return;
    if (OVE->getSourceExpr())
      Visit(OVE->getSourceExpr());
  }

  void VisitBinaryOperator(BinaryOperator *BinOp) {
    if (!Variable || VarWillBeReased || BinOp->getOpcode() != BO_Assign)
      return;
    Expr *LHS = BinOp->getLHS();
    if (const DeclRefExpr *DRE = dyn_cast_or_null<DeclRefExpr>(LHS)) {
      if (DRE->getDecl() != Variable)
        return;
      if (Expr *RHS = BinOp->getRHS()) {
        RHS = RHS->IgnoreParenCasts();
        llvm::APSInt Value;
        VarWillBeReased =
          (RHS && RHS->isIntegerConstantExpr(Value, Context) && Value == 0);
      }
    }
  }
};

13048} // namespace

13050/// Check whether the given argument is a block which captures a
13051/// variable.
13052static Expr *findCapturingExpr(Sema &S, Expr *e, RetainCycleOwner &owner) {
assert(owner.Variable && owner.Loc.isValid())((owner.Variable && owner.Loc.isValid()) ? static_cast
<void> (0) : __assert_fail ("owner.Variable && owner.Loc.isValid()"
, "/build/llvm-toolchain-snapshot-9~svn362543/tools/clang/lib/Sema/SemaChecking.cpp"
, 13053, __PRETTY_FUNCTION__));

e = e->IgnoreParenCasts();

// Look through [^{...} copy] and Block_copy(^{...}).
if (ObjCMessageExpr *ME = dyn_cast<ObjCMessageExpr>(e)) {
  Selector Cmd = ME->getSelector();
  if (Cmd.isUnarySelector() && Cmd.getNameForSlot(0) == "copy") {
    e = ME->getInstanceReceiver();
    if (!e)
      return nullptr;
    e = e->IgnoreParenCasts();
  }
} else if (CallExpr *CE = dyn_cast<CallExpr>(e)) {
  if (CE->getNumArgs() == 1) {
    FunctionDecl *Fn = dyn_cast_or_null<FunctionDecl>(CE->getCalleeDecl());
    if (Fn) {
      const IdentifierInfo *FnI = Fn->getIdentifier();
      if (FnI && FnI->isStr("_Block_copy")) {
        e = CE->getArg(0)->IgnoreParenCasts();
      }
    }
  }
}

BlockExpr *block = dyn_cast<BlockExpr>(e);
if (!block || !block->getBlockDecl()->capturesVariable(owner.Variable))
  return nullptr;

FindCaptureVisitor visitor(S.Context, owner.Variable);
visitor.Visit(block->getBlockDecl()->getBody());
return visitor.VarWillBeReased ? nullptr : visitor.Capturer;
13085}

13087static void diagnoseRetainCycle(Sema &S, Expr *capturer,
                              RetainCycleOwner &owner) {
assert(capturer)((capturer) ? static_cast<void> (0) : __assert_fail ("capturer"
, "/build/llvm-toolchain-snapshot-9~svn362543/tools/clang/lib/Sema/SemaChecking.cpp"
, 13089, __PRETTY_FUNCTION__));
assert(owner.Variable && owner.Loc.isValid())((owner.Variable && owner.Loc.isValid()) ? static_cast
<void> (0) : __assert_fail ("owner.Variable && owner.Loc.isValid()"
, "/build/llvm-toolchain-snapshot-9~svn362543/tools/clang/lib/Sema/SemaChecking.cpp"
, 13090, __PRETTY_FUNCTION__));

S.Diag(capturer->getExprLoc(), diag::warn_arc_retain_cycle)
  << owner.Variable << capturer->getSourceRange();
S.Diag(owner.Loc, diag::note_arc_retain_cycle_owner)
  << owner.Indirect << owner.Range;
13096}

13098/// Check for a keyword selector that starts with the word 'add' or
13099/// 'set'.
13100static bool isSetterLikeSelector(Selector sel) {
if (sel.isUnarySelector()) return false;

StringRef str = sel.getNameForSlot(0);
while (!str.empty() && str.front() == '_') str = str.substr(1);
if (str.startswith("set"))
  str = str.substr(3);
else if (str.startswith("add")) {
  // Specially whitelist 'addOperationWithBlock:'.
  if (sel.getNumArgs() == 1 && str.startswith("addOperationWithBlock"))
    return false;
  str = str.substr(3);
}
else
  return false;

if (str.empty()) return true;
return !isLowercase(str.front());
13118}

13120static Optional<int> GetNSMutableArrayArgumentIndex(Sema &S,
                                                  ObjCMessageExpr *Message) {
bool IsMutableArray = S.NSAPIObj->isSubclassOfNSClass(
                                              Message->getReceiverInterface(),
                                              NSAPI::ClassId_NSMutableArray);
if (!IsMutableArray) {
  return None;
}

Selector Sel = Message->getSelector();

Optional<NSAPI::NSArrayMethodKind> MKOpt =
  S.NSAPIObj->getNSArrayMethodKind(Sel);
if (!MKOpt) {
  return None;
}

NSAPI::NSArrayMethodKind MK = *MKOpt;

switch (MK) {
  case NSAPI::NSMutableArr_addObject:
  case NSAPI::NSMutableArr_insertObjectAtIndex:
  case NSAPI::NSMutableArr_setObjectAtIndexedSubscript:
    return 0;
  case NSAPI::NSMutableArr_replaceObjectAtIndex:
    return 1;

  default:
    return None;
}

return None;
13152}

13154static
13155Optional<int> GetNSMutableDictionaryArgumentIndex(Sema &S,
                                                ObjCMessageExpr *Message) {
bool IsMutableDictionary = S.NSAPIObj->isSubclassOfNSClass(
                                          Message->getReceiverInterface(),
                                          NSAPI::ClassId_NSMutableDictionary);
if (!IsMutableDictionary) {
  return None;
}

Selector Sel = Message->getSelector();

Optional<NSAPI::NSDictionaryMethodKind> MKOpt =
  S.NSAPIObj->getNSDictionaryMethodKind(Sel);
if (!MKOpt) {
  return None;
}

NSAPI::NSDictionaryMethodKind MK = *MKOpt;

switch (MK) {
  case NSAPI::NSMutableDict_setObjectForKey:
  case NSAPI::NSMutableDict_setValueForKey:
  case NSAPI::NSMutableDict_setObjectForKeyedSubscript:
    return 0;

  default:
    return None;
}

return None;
13185}

13187static Optional<int> GetNSSetArgumentIndex(Sema &S, ObjCMessageExpr *Message) {
bool IsMutableSet = S.NSAPIObj->isSubclassOfNSClass(
                                              Message->getReceiverInterface(),
                                              NSAPI::ClassId_NSMutableSet);

bool IsMutableOrderedSet = S.NSAPIObj->isSubclassOfNSClass(
                                          Message->getReceiverInterface(),
                                          NSAPI::ClassId_NSMutableOrderedSet);
if (!IsMutableSet && !IsMutableOrderedSet) {
  return None;
}

Selector Sel = Message->getSelector();

Optional<NSAPI::NSSetMethodKind> MKOpt = S.NSAPIObj->getNSSetMethodKind(Sel);
if (!MKOpt) {
  return None;
}

NSAPI::NSSetMethodKind MK = *MKOpt;

switch (MK) {
  case NSAPI::NSMutableSet_addObject:
  case NSAPI::NSOrderedSet_setObjectAtIndex:
  case NSAPI::NSOrderedSet_setObjectAtIndexedSubscript:
  case NSAPI::NSOrderedSet_insertObjectAtIndex:
    return 0;
  case NSAPI::NSOrderedSet_replaceObjectAtIndexWithObject:
    return 1;
}

return None;
13219}

13221void Sema::CheckObjCCircularContainer(ObjCMessageExpr *Message) {
if (!Message->isInstanceMessage()) {
  return;
}

Optional<int> ArgOpt;

if (!(ArgOpt = GetNSMutableArrayArgumentIndex(*this, Message)) &&
    !(ArgOpt = GetNSMutableDictionaryArgumentIndex(*this, Message)) &&
    !(ArgOpt = GetNSSetArgumentIndex(*this, Message))) {
  return;
}

int ArgIndex = *ArgOpt;

Expr *Arg = Message->getArg(ArgIndex)->IgnoreImpCasts();
if (OpaqueValueExpr *OE = dyn_cast<OpaqueValueExpr>(Arg)) {
  Arg = OE->getSourceExpr()->IgnoreImpCasts();
}

if (Message->getReceiverKind() == ObjCMessageExpr::SuperInstance) {
  if (DeclRefExpr *ArgRE = dyn_cast<DeclRefExpr>(Arg)) {
    if (ArgRE->isObjCSelfExpr()) {
      Diag(Message->getSourceRange().getBegin(),
           diag::warn_objc_circular_container)
        << ArgRE->getDecl() << StringRef("'super'");
    }
  }
} else {
  Expr *Receiver = Message->getInstanceReceiver()->IgnoreImpCasts();

  if (OpaqueValueExpr *OE = dyn_cast<OpaqueValueExpr>(Receiver)) {
    Receiver = OE->getSourceExpr()->IgnoreImpCasts();
  }

  if (DeclRefExpr *ReceiverRE = dyn_cast<DeclRefExpr>(Receiver)) {
    if (DeclRefExpr *ArgRE = dyn_cast<DeclRefExpr>(Arg)) {
      if (ReceiverRE->getDecl() == ArgRE->getDecl()) {
        ValueDecl *Decl = ReceiverRE->getDecl();
        Diag(Message->getSourceRange().getBegin(),
             diag::warn_objc_circular_container)
          << Decl << Decl;
        if (!ArgRE->isObjCSelfExpr()) {
          Diag(Decl->getLocation(),
               diag::note_objc_circular_container_declared_here)
            << Decl;
        }
      }
    }
  } else if (ObjCIvarRefExpr *IvarRE = dyn_cast<ObjCIvarRefExpr>(Receiver)) {
    if (ObjCIvarRefExpr *IvarArgRE = dyn_cast<ObjCIvarRefExpr>(Arg)) {
      if (IvarRE->getDecl() == IvarArgRE->getDecl()) {
        ObjCIvarDecl *Decl = IvarRE->getDecl();
        Diag(Message->getSourceRange().getBegin(),
             diag::warn_objc_circular_container)
          << Decl << Decl;
        Diag(Decl->getLocation(),
             diag::note_objc_circular_container_declared_here)
          << Decl;
      }
    }
  }
}
13284}

13286/// Check a message send to see if it's likely to cause a retain cycle.
13287void Sema::checkRetainCycles(ObjCMessageExpr *msg) {
// Only check instance methods whose selector looks like a setter.
if (!msg->isInstanceMessage() || !isSetterLikeSelector(msg->getSelector()))
  return;

// Try to find a variable that the receiver is strongly owned by.
RetainCycleOwner owner;
if (msg->getReceiverKind() == ObjCMessageExpr::Instance) {
  if (!findRetainCycleOwner(*this, msg->getInstanceReceiver(), owner))
    return;
} else {
  assert(msg->getReceiverKind() == ObjCMessageExpr::SuperInstance)((msg->getReceiverKind() == ObjCMessageExpr::SuperInstance
) ? static_cast<void> (0) : __assert_fail ("msg->getReceiverKind() == ObjCMessageExpr::SuperInstance"
, "/build/llvm-toolchain-snapshot-9~svn362543/tools/clang/lib/Sema/SemaChecking.cpp"
, 13298, __PRETTY_FUNCTION__));
  owner.Variable = getCurMethodDecl()->getSelfDecl();
  owner.Loc = msg->getSuperLoc();
  owner.Range = msg->getSuperLoc();
}

// Check whether the receiver is captured by any of the arguments.
const ObjCMethodDecl *MD = msg->getMethodDecl();
for (unsigned i = 0, e = msg->getNumArgs(); i != e; ++i) {
  if (Expr *capturer = findCapturingExpr(*this, msg->getArg(i), owner)) {
    // noescape blocks should not be retained by the method.
    if (MD && MD->parameters()[i]->hasAttr<NoEscapeAttr>())
      continue;
    return diagnoseRetainCycle(*this, capturer, owner);
  }
}
13314}

13316/// Check a property assign to see if it's likely to cause a retain cycle.
13317void Sema::checkRetainCycles(Expr *receiver, Expr *argument) {
RetainCycleOwner owner;
if (!findRetainCycleOwner(*this, receiver, owner))
  return;

if (Expr *capturer = findCapturingExpr(*this, argument, owner))
  diagnoseRetainCycle(*this, capturer, owner);
13324}

13326void Sema::checkRetainCycles(VarDecl *Var, Expr *Init) {
RetainCycleOwner Owner;
if (!considerVariable(Var, /*DeclRefExpr=*/nullptr, Owner))
  return;

// Because we don't have an expression for the variable, we have to set the
// location explicitly here.
Owner.Loc = Var->getLocation();
Owner.Range = Var->getSourceRange();

if (Expr *Capturer = findCapturingExpr(*this, Init, Owner))
  diagnoseRetainCycle(*this, Capturer, Owner);
13338}

13340static bool checkUnsafeAssignLiteral(Sema &S, SourceLocation Loc,
                                   Expr *RHS, bool isProperty) {
// Check if RHS is an Objective-C object literal, which also can get
// immediately zapped in a weak reference.  Note that we explicitly
// allow ObjCStringLiterals, since those are designed to never really die.
RHS = RHS->IgnoreParenImpCasts();

// This enum needs to match with the 'select' in
// warn_objc_arc_literal_assign (off-by-1).
Sema::ObjCLiteralKind Kind = S.CheckLiteralKind(RHS);
if (Kind == Sema::LK_String || Kind == Sema::LK_None)
  return false;

S.Diag(Loc, diag::warn_arc_literal_assign)
  << (unsigned) Kind
  << (isProperty ? 0 : 1)
  << RHS->getSourceRange();

return true;
13359}

13361static bool checkUnsafeAssignObject(Sema &S, SourceLocation Loc,
                                  Qualifiers::ObjCLifetime LT,
                                  Expr *RHS, bool isProperty) {
// Strip off any implicit cast added to get to the one ARC-specific.
while (ImplicitCastExpr *cast = dyn_cast<ImplicitCastExpr>(RHS)) {
  if (cast->getCastKind() == CK_ARCConsumeObject) {
    S.Diag(Loc, diag::warn_arc_retained_assign)
      << (LT == Qualifiers::OCL_ExplicitNone)
      << (isProperty ? 0 : 1)
      << RHS->getSourceRange();
    return true;
  }
  RHS = cast->getSubExpr();
}

if (LT == Qualifiers::OCL_Weak &&
    checkUnsafeAssignLiteral(S, Loc, RHS, isProperty))
  return true;

return false;
13381}

13383bool Sema::checkUnsafeAssigns(SourceLocation Loc,
                            QualType LHS, Expr *RHS) {
Qualifiers::ObjCLifetime LT = LHS.getObjCLifetime();

if (LT != Qualifiers::OCL_Weak && LT != Qualifiers::OCL_ExplicitNone)
  return false;

if (checkUnsafeAssignObject(*this, Loc, LT, RHS, false))
  return true;

return false;
13394}

13396void Sema::checkUnsafeExprAssigns(SourceLocation Loc,
                            Expr *LHS, Expr *RHS) {
QualType LHSType;
// PropertyRef on LHS type need be directly obtained from
// its declaration as it has a PseudoType.
ObjCPropertyRefExpr *PRE
  = dyn_cast<ObjCPropertyRefExpr>(LHS->IgnoreParens());
if (PRE && !PRE->isImplicitProperty()) {
  const ObjCPropertyDecl *PD = PRE->getExplicitProperty();
  if (PD)
    LHSType = PD->getType();
}

if (LHSType.isNull())
  LHSType = LHS->getType();

Qualifiers::ObjCLifetime LT = LHSType.getObjCLifetime();

if (LT == Qualifiers::OCL_Weak) {
  if (!Diags.isIgnored(diag::warn_arc_repeated_use_of_weak, Loc))
    getCurFunction()->markSafeWeakUse(LHS);
}

if (checkUnsafeAssigns(Loc, LHSType, RHS))
  return;

// FIXME. Check for other life times.
if (LT != Qualifiers::OCL_None)
  return;

if (PRE) {
  if (PRE->isImplicitProperty())
    return;
  const ObjCPropertyDecl *PD = PRE->getExplicitProperty();
  if (!PD)
    return;

  unsigned Attributes = PD->getPropertyAttributes();
  if (Attributes & ObjCPropertyDecl::OBJC_PR_assign) {
    // when 'assign' attribute was not explicitly specified
    // by user, ignore it and rely on property type itself
    // for lifetime info.
    unsigned AsWrittenAttr = PD->getPropertyAttributesAsWritten();
    if (!(AsWrittenAttr & ObjCPropertyDecl::OBJC_PR_assign) &&
        LHSType->isObjCRetainableType())
      return;

    while (ImplicitCastExpr *cast = dyn_cast<ImplicitCastExpr>(RHS)) {
      if (cast->getCastKind() == CK_ARCConsumeObject) {
        Diag(Loc, diag::warn_arc_retained_property_assign)
        << RHS->getSourceRange();
        return;
      }
      RHS = cast->getSubExpr();
    }
  }
  else if (Attributes & ObjCPropertyDecl::OBJC_PR_weak) {
    if (checkUnsafeAssignObject(*this, Loc, Qualifiers::OCL_Weak, RHS, true))
      return;
  }
}
13457}

13459//===--- CHECK: Empty statement body (-Wempty-body) ---------------------===//

13461static bool ShouldDiagnoseEmptyStmtBody(const SourceManager &SourceMgr,
                                      SourceLocation StmtLoc,
                                      const NullStmt *Body) {
// Do not warn if the body is a macro that expands to nothing, e.g:
//
// #define CALL(x)
// if (condition)
//   CALL(0);
if (Body->hasLeadingEmptyMacro())
  return false;

// Get line numbers of statement and body.
bool StmtLineInvalid;
unsigned StmtLine = SourceMgr.getPresumedLineNumber(StmtLoc,
                                                    &StmtLineInvalid);
if (StmtLineInvalid)
  return false;

bool BodyLineInvalid;
unsigned BodyLine = SourceMgr.getSpellingLineNumber(Body->getSemiLoc(),
                                                    &BodyLineInvalid);
if (BodyLineInvalid)
  return false;

// Warn if null statement and body are on the same line.
if (StmtLine != BodyLine)
  return false;

return true;
13490}

13492void Sema::DiagnoseEmptyStmtBody(SourceLocation StmtLoc,
                               const Stmt *Body,
                               unsigned DiagID) {
// Since this is a syntactic check, don't emit diagnostic for template
// instantiations, this just adds noise.
if (CurrentInstantiationScope)
  return;

// The body should be a null statement.
const NullStmt *NBody = dyn_cast<NullStmt>(Body);
if (!NBody)
  return;

// Do the usual checks.
if (!ShouldDiagnoseEmptyStmtBody(SourceMgr, StmtLoc, NBody))
  return;

Diag(NBody->getSemiLoc(), DiagID);
Diag(NBody->getSemiLoc(), diag::note_empty_body_on_separate_line);
13511}

13513void Sema::DiagnoseEmptyLoopBody(const Stmt *S,
                               const Stmt *PossibleBody) {
assert(!CurrentInstantiationScope)((!CurrentInstantiationScope) ? static_cast<void> (0) :
 __assert_fail ("!CurrentInstantiationScope", "/build/llvm-toolchain-snapshot-9~svn362543/tools/clang/lib/Sema/SemaChecking.cpp"
, 13515, __PRETTY_FUNCTION__)); // Ensured by caller

SourceLocation StmtLoc;
const Stmt *Body;
unsigned DiagID;
if (const ForStmt *FS = dyn_cast<ForStmt>(S)) {
  StmtLoc = FS->getRParenLoc();
  Body = FS->getBody();
  DiagID = diag::warn_empty_for_body;
} else if (const WhileStmt *WS = dyn_cast<WhileStmt>(S)) {
  StmtLoc = WS->getCond()->getSourceRange().getEnd();
  Body = WS->getBody();
  DiagID = diag::warn_empty_while_body;
} else
  return; // Neither `for' nor `while'.

// The body should be a null statement.
const NullStmt *NBody = dyn_cast<NullStmt>(Body);
if (!NBody)
  return;

// Skip expensive checks if diagnostic is disabled.
if (Diags.isIgnored(DiagID, NBody->getSemiLoc()))
  return;

// Do the usual checks.
if (!ShouldDiagnoseEmptyStmtBody(SourceMgr, StmtLoc, NBody))
  return;

// `for(...);' and `while(...);' are popular idioms, so in order to keep
// noise level low, emit diagnostics only if for/while is followed by a
// CompoundStmt, e.g.:
//    for (int i = 0; i < n; i++);
//    {
//      a(i);
//    }
// or if for/while is followed by a statement with more indentation
// than for/while itself:
//    for (int i = 0; i < n; i++);
//      a(i);
bool ProbableTypo = isa<CompoundStmt>(PossibleBody);
if (!ProbableTypo) {
  bool BodyColInvalid;
  unsigned BodyCol = SourceMgr.getPresumedColumnNumber(
      PossibleBody->getBeginLoc(), &BodyColInvalid);
  if (BodyColInvalid)
    return;

  bool StmtColInvalid;
  unsigned StmtCol =
      SourceMgr.getPresumedColumnNumber(S->getBeginLoc(), &StmtColInvalid);
  if (StmtColInvalid)
    return;

  if (BodyCol > StmtCol)
    ProbableTypo = true;
}

if (ProbableTypo) {
  Diag(NBody->getSemiLoc(), DiagID);
  Diag(NBody->getSemiLoc(), diag::note_empty_body_on_separate_line);
}
13577}

13579//===--- CHECK: Warn on self move with std::move. -------------------------===//

13581/// DiagnoseSelfMove - Emits a warning if a value is moved to itself.
13582void Sema::DiagnoseSelfMove(const Expr *LHSExpr, const Expr *RHSExpr,
                           SourceLocation OpLoc) {
if (Diags.isIgnored(diag::warn_sizeof_pointer_expr_memaccess, OpLoc))
  return;

if (inTemplateInstantiation())
  return;

// Strip parens and casts away.
LHSExpr = LHSExpr->IgnoreParenImpCasts();
RHSExpr = RHSExpr->IgnoreParenImpCasts();

// Check for a call expression
const CallExpr *CE = dyn_cast<CallExpr>(RHSExpr);
if (!CE || CE->getNumArgs() != 1)
  return;

// Check for a call to std::move
if (!CE->isCallToStdMove())
  return;

// Get argument from std::move
RHSExpr = CE->getArg(0);

const DeclRefExpr *LHSDeclRef = dyn_cast<DeclRefExpr>(LHSExpr);
const DeclRefExpr *RHSDeclRef = dyn_cast<DeclRefExpr>(RHSExpr);

// Two DeclRefExpr's, check that the decls are the same.
if (LHSDeclRef && RHSDeclRef) {
  if (!LHSDeclRef->getDecl() || !RHSDeclRef->getDecl())
    return;
  if (LHSDeclRef->getDecl()->getCanonicalDecl() !=
      RHSDeclRef->getDecl()->getCanonicalDecl())
    return;

  Diag(OpLoc, diag::warn_self_move) << LHSExpr->getType()
                                      << LHSExpr->getSourceRange()
                                      << RHSExpr->getSourceRange();
  return;
}

// Member variables require a different approach to check for self moves.
// MemberExpr's are the same if every nested MemberExpr refers to the same
// Decl and that the base Expr's are DeclRefExpr's with the same Decl or
// the base Expr's are CXXThisExpr's.
const Expr *LHSBase = LHSExpr;
const Expr *RHSBase = RHSExpr;
const MemberExpr *LHSME = dyn_cast<MemberExpr>(LHSExpr);
const MemberExpr *RHSME = dyn_cast<MemberExpr>(RHSExpr);
if (!LHSME || !RHSME)
  return;

while (LHSME && RHSME) {
  if (LHSME->getMemberDecl()->getCanonicalDecl() !=
      RHSME->getMemberDecl()->getCanonicalDecl())
    return;

  LHSBase = LHSME->getBase();
  RHSBase = RHSME->getBase();
  LHSME = dyn_cast<MemberExpr>(LHSBase);
  RHSME = dyn_cast<MemberExpr>(RHSBase);
}

LHSDeclRef = dyn_cast<DeclRefExpr>(LHSBase);
RHSDeclRef = dyn_cast<DeclRefExpr>(RHSBase);
if (LHSDeclRef && RHSDeclRef) {
  if (!LHSDeclRef->getDecl() || !RHSDeclRef->getDecl())
    return;
  if (LHSDeclRef->getDecl()->getCanonicalDecl() !=
      RHSDeclRef->getDecl()->getCanonicalDecl())
    return;

  Diag(OpLoc, diag::warn_self_move) << LHSExpr->getType()
                                      << LHSExpr->getSourceRange()
                                      << RHSExpr->getSourceRange();
  return;
}

if (isa<CXXThisExpr>(LHSBase) && isa<CXXThisExpr>(RHSBase))
  Diag(OpLoc, diag::warn_self_move) << LHSExpr->getType()
                                      << LHSExpr->getSourceRange()
                                      << RHSExpr->getSourceRange();
13664}

13666//===--- Layout compatibility ----------------------------------------------//

13668static bool isLayoutCompatible(ASTContext &C, QualType T1, QualType T2);

13670/// Check if two enumeration types are layout-compatible.
13671static bool isLayoutCompatible(ASTContext &C, EnumDecl *ED1, EnumDecl *ED2) {
// C++11 [dcl.enum] p8:
// Two enumeration types are layout-compatible if they have the same
// underlying type.
return ED1->isComplete() && ED2->isComplete() &&
       C.hasSameType(ED1->getIntegerType(), ED2->getIntegerType());
13677}

13679/// Check if two fields are layout-compatible.
13680static bool isLayoutCompatible(ASTContext &C, FieldDecl *Field1,
                             FieldDecl *Field2) {
if (!isLayoutCompatible(C, Field1->getType(), Field2->getType()))
  return false;

if (Field1->isBitField() != Field2->isBitField())
  return false;

if (Field1->isBitField()) {
  // Make sure that the bit-fields are the same length.
  unsigned Bits1 = Field1->getBitWidthValue(C);
  unsigned Bits2 = Field2->getBitWidthValue(C);

  if (Bits1 != Bits2)
    return false;
}

return true;
13698}

13700/// Check if two standard-layout structs are layout-compatible.
13701/// (C++11 [class.mem] p17)
13702static bool isLayoutCompatibleStruct(ASTContext &C, RecordDecl *RD1,
                                   RecordDecl *RD2) {
// If both records are C++ classes, check that base classes match.
if (const CXXRecordDecl *D1CXX = dyn_cast<CXXRecordDecl>(RD1)) {
  // If one of records is a CXXRecordDecl we are in C++ mode,
  // thus the other one is a CXXRecordDecl, too.
  const CXXRecordDecl *D2CXX = cast<CXXRecordDecl>(RD2);
  // Check number of base classes.
  if (D1CXX->getNumBases() != D2CXX->getNumBases())
    return false;

  // Check the base classes.
  for (CXXRecordDecl::base_class_const_iterator
             Base1 = D1CXX->bases_begin(),
         BaseEnd1 = D1CXX->bases_end(),
            Base2 = D2CXX->bases_begin();
       Base1 != BaseEnd1;
       ++Base1, ++Base2) {
    if (!isLayoutCompatible(C, Base1->getType(), Base2->getType()))
      return false;
  }
} else if (const CXXRecordDecl *D2CXX = dyn_cast<CXXRecordDecl>(RD2)) {
  // If only RD2 is a C++ class, it should have zero base classes.
  if (D2CXX->getNumBases() > 0)
    return false;
}

// Check the fields.
RecordDecl::field_iterator Field2 = RD2->field_begin(),
                           Field2End = RD2->field_end(),
                           Field1 = RD1->field_begin(),
                           Field1End = RD1->field_end();
for ( ; Field1 != Field1End && Field2 != Field2End; ++Field1, ++Field2) {
  if (!isLayoutCompatible(C, *Field1, *Field2))
    return false;
}
if (Field1 != Field1End || Field2 != Field2End)
  return false;

return true;
13742}

13744/// Check if two standard-layout unions are layout-compatible.
13745/// (C++11 [class.mem] p18)
13746static bool isLayoutCompatibleUnion(ASTContext &C, RecordDecl *RD1,
                                  RecordDecl *RD2) {
llvm::SmallPtrSet<FieldDecl *, 8> UnmatchedFields;
for (auto *Field2 : RD2->fields())
  UnmatchedFields.insert(Field2);

for (auto *Field1 : RD1->fields()) {
  llvm::SmallPtrSet<FieldDecl *, 8>::iterator
      I = UnmatchedFields.begin(),
      E = UnmatchedFields.end();

  for ( ; I != E; ++I) {
    if (isLayoutCompatible(C, Field1, *I)) {
      bool Result = UnmatchedFields.erase(*I);
      (void) Result;
      assert(Result)((Result) ? static_cast<void> (0) : __assert_fail ("Result"
, "/build/llvm-toolchain-snapshot-9~svn362543/tools/clang/lib/Sema/SemaChecking.cpp"
, 13761, __PRETTY_FUNCTION__));
      break;
    }
  }
  if (I == E)
    return false;
}

return UnmatchedFields.empty();
13770}

13772static bool isLayoutCompatible(ASTContext &C, RecordDecl *RD1,
                             RecordDecl *RD2) {
if (RD1->isUnion() != RD2->isUnion())
  return false;

if (RD1->isUnion())
  return isLayoutCompatibleUnion(C, RD1, RD2);
else
  return isLayoutCompatibleStruct(C, RD1, RD2);
13781}

13783/// Check if two types are layout-compatible in C++11 sense.
13784static bool isLayoutCompatible(ASTContext &C, QualType T1, QualType T2) {
if (T1.isNull() || T2.isNull())
  return false;

// C++11 [basic.types] p11:
// If two types T1 and T2 are the same type, then T1 and T2 are
// layout-compatible types.
if (C.hasSameType(T1, T2))
  return true;

T1 = T1.getCanonicalType().getUnqualifiedType();
T2 = T2.getCanonicalType().getUnqualifiedType();

const Type::TypeClass TC1 = T1->getTypeClass();
const Type::TypeClass TC2 = T2->getTypeClass();

if (TC1 != TC2)
  return false;

if (TC1 == Type::Enum) {
  return isLayoutCompatible(C,
                            cast<EnumType>(T1)->getDecl(),
                            cast<EnumType>(T2)->getDecl());
} else if (TC1 == Type::Record) {
  if (!T1->isStandardLayoutType() || !T2->isStandardLayoutType())
    return false;

  return isLayoutCompatible(C,
                            cast<RecordType>(T1)->getDecl(),
                            cast<RecordType>(T2)->getDecl());
}

return false;
13817}

13819//===--- CHECK: pointer_with_type_tag attribute: datatypes should match ----//

13821/// Given a type tag expression find the type tag itself.
13822///
13823/// \param TypeExpr Type tag expression, as it appears in user's code.
13824///
13825/// \param VD Declaration of an identifier that appears in a type tag.
13826///
13827/// \param MagicValue Type tag magic value.
13828static bool FindTypeTagExpr(const Expr *TypeExpr, const ASTContext &Ctx,
                          const ValueDecl **VD, uint64_t *MagicValue) {
while(true) {
  if (!TypeExpr)
    return false;

  TypeExpr = TypeExpr->IgnoreParenImpCasts()->IgnoreParenCasts();

  switch (TypeExpr->getStmtClass()) {
  case Stmt::UnaryOperatorClass: {
    const UnaryOperator *UO = cast<UnaryOperator>(TypeExpr);
    if (UO->getOpcode() == UO_AddrOf || UO->getOpcode() == UO_Deref) {
      TypeExpr = UO->getSubExpr();
      continue;
    }
    return false;
  }

  case Stmt::DeclRefExprClass: {
    const DeclRefExpr *DRE = cast<DeclRefExpr>(TypeExpr);
    *VD = DRE->getDecl();
    return true;
  }

  case Stmt::IntegerLiteralClass: {
    const IntegerLiteral *IL = cast<IntegerLiteral>(TypeExpr);
    llvm::APInt MagicValueAPInt = IL->getValue();
    if (MagicValueAPInt.getActiveBits() <= 64) {
      *MagicValue = MagicValueAPInt.getZExtValue();
      return true;
    } else
      return false;
  }

  case Stmt::BinaryConditionalOperatorClass:
  case Stmt::ConditionalOperatorClass: {
    const AbstractConditionalOperator *ACO =
        cast<AbstractConditionalOperator>(TypeExpr);
    bool Result;
    if (ACO->getCond()->EvaluateAsBooleanCondition(Result, Ctx)) {
      if (Result)
        TypeExpr = ACO->getTrueExpr();
      else
        TypeExpr = ACO->getFalseExpr();
      continue;
    }
    return false;
  }

  case Stmt::BinaryOperatorClass: {
    const BinaryOperator *BO = cast<BinaryOperator>(TypeExpr);
    if (BO->getOpcode() == BO_Comma) {
      TypeExpr = BO->getRHS();
      continue;
    }
    return false;
  }

  default:
    return false;
  }
}
13890}

13892/// Retrieve the C type corresponding to type tag TypeExpr.
13893///
13894/// \param TypeExpr Expression that specifies a type tag.
13895///
13896/// \param MagicValues Registered magic values.
13897///
13898/// \param FoundWrongKind Set to true if a type tag was found, but of a wrong
13899///        kind.
13900///
13901/// \param TypeInfo Information about the corresponding C type.
13902///
13903/// \returns true if the corresponding C type was found.
13904static bool GetMatchingCType(
      const IdentifierInfo *ArgumentKind,
      const Expr *TypeExpr, const ASTContext &Ctx,
      const llvm::DenseMap<Sema::TypeTagMagicValue,
                           Sema::TypeTagData> *MagicValues,
      bool &FoundWrongKind,
      Sema::TypeTagData &TypeInfo) {
FoundWrongKind = false;

// Variable declaration that has type_tag_for_datatype attribute.
const ValueDecl *VD = nullptr;

uint64_t MagicValue;

if (!FindTypeTagExpr(TypeExpr, Ctx, &VD, &MagicValue))
  return false;

if (VD) {
  if (TypeTagForDatatypeAttr *I = VD->getAttr<TypeTagForDatatypeAttr>()) {
    if (I->getArgumentKind() != ArgumentKind) {
      FoundWrongKind = true;
      return false;
    }
    TypeInfo.Type = I->getMatchingCType();
    TypeInfo.LayoutCompatible = I->getLayoutCompatible();
    TypeInfo.MustBeNull = I->getMustBeNull();
    return true;
  }
  return false;
}

if (!MagicValues)
  return false;

llvm::DenseMap<Sema::TypeTagMagicValue,
               Sema::TypeTagData>::const_iterator I =
    MagicValues->find(std::make_pair(ArgumentKind, MagicValue));
if (I == MagicValues->end())
  return false;

TypeInfo = I->second;
return true;
13946}

13948void Sema::RegisterTypeTagForDatatype(const IdentifierInfo *ArgumentKind,
                                    uint64_t MagicValue, QualType Type,
                                    bool LayoutCompatible,
                                    bool MustBeNull) {
if (!TypeTagForDatatypeMagicValues)
  TypeTagForDatatypeMagicValues.reset(
      new llvm::DenseMap<TypeTagMagicValue, TypeTagData>);

TypeTagMagicValue Magic(ArgumentKind, MagicValue);
(*TypeTagForDatatypeMagicValues)[Magic] =
    TypeTagData(Type, LayoutCompatible, MustBeNull);
13959}

13961static bool IsSameCharType(QualType T1, QualType T2) {
const BuiltinType *BT1 = T1->getAs<BuiltinType>();
if (!BT1)
  return false;

const BuiltinType *BT2 = T2->getAs<BuiltinType>();
if (!BT2)
  return false;

BuiltinType::Kind T1Kind = BT1->getKind();
BuiltinType::Kind T2Kind = BT2->getKind();

return (T1Kind == BuiltinType::SChar  && T2Kind == BuiltinType::Char_S) ||
       (T1Kind == BuiltinType::UChar  && T2Kind == BuiltinType::Char_U) ||
       (T1Kind == BuiltinType::Char_U && T2Kind == BuiltinType::UChar) ||
       (T1Kind == BuiltinType::Char_S && T2Kind == BuiltinType::SChar);
13977}

13979void Sema::CheckArgumentWithTypeTag(const ArgumentWithTypeTagAttr *Attr,
                                  const ArrayRef<const Expr *> ExprArgs,
                                  SourceLocation CallSiteLoc) {
const IdentifierInfo *ArgumentKind = Attr->getArgumentKind();
bool IsPointerAttr = Attr->getIsPointer();

// Retrieve the argument representing the 'type_tag'.
unsigned TypeTagIdxAST = Attr->getTypeTagIdx().getASTIndex();
if (TypeTagIdxAST >= ExprArgs.size()) {
  Diag(CallSiteLoc, diag::err_tag_index_out_of_range)
      << 0 << Attr->getTypeTagIdx().getSourceIndex();
  return;
}
const Expr *TypeTagExpr = ExprArgs[TypeTagIdxAST];
bool FoundWrongKind;
TypeTagData TypeInfo;
if (!GetMatchingCType(ArgumentKind, TypeTagExpr, Context,
                      TypeTagForDatatypeMagicValues.get(),
                      FoundWrongKind, TypeInfo)) {
  if (FoundWrongKind)
    Diag(TypeTagExpr->getExprLoc(),
         diag::warn_type_tag_for_datatype_wrong_kind)
      << TypeTagExpr->getSourceRange();
  return;
}

// Retrieve the argument representing the 'arg_idx'.
unsigned ArgumentIdxAST = Attr->getArgumentIdx().getASTIndex();
if (ArgumentIdxAST >= ExprArgs.size()) {
  Diag(CallSiteLoc, diag::err_tag_index_out_of_range)
      << 1 << Attr->getArgumentIdx().getSourceIndex();
  return;
}
const Expr *ArgumentExpr = ExprArgs[ArgumentIdxAST];
if (IsPointerAttr) {
  // Skip implicit cast of pointer to `void *' (as a function argument).
  if (const ImplicitCastExpr *ICE = dyn_cast<ImplicitCastExpr>(ArgumentExpr))
    if (ICE->getType()->isVoidPointerType() &&
        ICE->getCastKind() == CK_BitCast)
      ArgumentExpr = ICE->getSubExpr();
}
QualType ArgumentType = ArgumentExpr->getType();

// Passing a `void*' pointer shouldn't trigger a warning.
if (IsPointerAttr && ArgumentType->isVoidPointerType())
  return;

if (TypeInfo.MustBeNull) {
  // Type tag with matching void type requires a null pointer.
  if (!ArgumentExpr->isNullPointerConstant(Context,
                                           Expr::NPC_ValueDependentIsNotNull)) {
    Diag(ArgumentExpr->getExprLoc(),
         diag::warn_type_safety_null_pointer_required)
        << ArgumentKind->getName()
        << ArgumentExpr->getSourceRange()
        << TypeTagExpr->getSourceRange();
  }
  return;
}

QualType RequiredType = TypeInfo.Type;
if (IsPointerAttr)
  RequiredType = Context.getPointerType(RequiredType);

bool mismatch = false;
if (!TypeInfo.LayoutCompatible) {
  mismatch = !Context.hasSameType(ArgumentType, RequiredType);

  // C++11 [basic.fundamental] p1:
  // Plain char, signed char, and unsigned char are three distinct types.
  //
  // But we treat plain `char' as equivalent to `signed char' or `unsigned
  // char' depending on the current char signedness mode.
  if (mismatch)
    if ((IsPointerAttr && IsSameCharType(ArgumentType->getPointeeType(),
                                         RequiredType->getPointeeType())) ||
        (!IsPointerAttr && IsSameCharType(ArgumentType, RequiredType)))
      mismatch = false;
} else
  if (IsPointerAttr)
    mismatch = !isLayoutCompatible(Context,
                                   ArgumentType->getPointeeType(),
                                   RequiredType->getPointeeType());
  else
    mismatch = !isLayoutCompatible(Context, ArgumentType, RequiredType);

if (mismatch)
  Diag(ArgumentExpr->getExprLoc(), diag::warn_type_safety_type_mismatch)
      << ArgumentType << ArgumentKind
      << TypeInfo.LayoutCompatible << RequiredType
      << ArgumentExpr->getSourceRange()
      << TypeTagExpr->getSourceRange();
14071}

14073void Sema::AddPotentialMisalignedMembers(Expr *E, RecordDecl *RD, ValueDecl *MD,
                                       CharUnits Alignment) {
MisalignedMembers.emplace_back(E, RD, MD, Alignment);
14076}

14078void Sema::DiagnoseMisalignedMembers() {
for (MisalignedMember &m : MisalignedMembers) {
  const NamedDecl *ND = m.RD;
  if (ND->getName().empty()) {
    if (const TypedefNameDecl *TD = m.RD->getTypedefNameForAnonDecl())
      ND = TD;
  }
  Diag(m.E->getBeginLoc(), diag::warn_taking_address_of_packed_member)
      << m.MD << ND << m.E->getSourceRange();
}
MisalignedMembers.clear();
14089}

14091void Sema::DiscardMisalignedMemberAddress(const Type *T, Expr *E) {
E = E->IgnoreParens();
if (!T->isPointerType() && !T->isIntegerType())
  return;
if (isa<UnaryOperator>(E) &&
    cast<UnaryOperator>(E)->getOpcode() == UO_AddrOf) {
  auto *Op = cast<UnaryOperator>(E)->getSubExpr()->IgnoreParens();
  if (isa<MemberExpr>(Op)) {
    auto MA = llvm::find(MisalignedMembers, MisalignedMember(Op));
    if (MA != MisalignedMembers.end() &&
        (T->isIntegerType() ||
         (T->isPointerType() && (T->getPointeeType()->isIncompleteType() ||
                                 Context.getTypeAlignInChars(
                                     T->getPointeeType()) <= MA->Alignment))))
      MisalignedMembers.erase(MA);
  }
}
14108}

14110void Sema::RefersToMemberWithReducedAlignment(
  Expr *E,
  llvm::function_ref<void(Expr *, RecordDecl *, FieldDecl *, CharUnits)>
      Action) {
const auto *ME = dyn_cast<MemberExpr>(E);
if (!ME)
  return;

// No need to check expressions with an __unaligned-qualified type.
if (E->getType().getQualifiers().hasUnaligned())
  return;

// For a chain of MemberExpr like "a.b.c.d" this list
// will keep FieldDecl's like [d, c, b].
SmallVector<FieldDecl *, 4> ReverseMemberChain;
const MemberExpr *TopME = nullptr;
bool AnyIsPacked = false;
do {
  QualType BaseType = ME->getBase()->getType();
  if (ME->isArrow())
    BaseType = BaseType->getPointeeType();
  RecordDecl *RD = BaseType->getAs<RecordType>()->getDecl();
  if (RD->isInvalidDecl())
    return;

  ValueDecl *MD = ME->getMemberDecl();
  auto *FD = dyn_cast<FieldDecl>(MD);
  // We do not care about non-data members.
  if (!FD || FD->isInvalidDecl())
    return;

  AnyIsPacked =
      AnyIsPacked || (RD->hasAttr<PackedAttr>() || MD->hasAttr<PackedAttr>());
  ReverseMemberChain.push_back(FD);

  TopME = ME;
  ME = dyn_cast<MemberExpr>(ME->getBase()->IgnoreParens());
} while (ME);
assert(TopME && "We did not compute a topmost MemberExpr!")((TopME && "We did not compute a topmost MemberExpr!"
) ? static_cast<void> (0) : __assert_fail ("TopME && \"We did not compute a topmost MemberExpr!\""
, "/build/llvm-toolchain-snapshot-9~svn362543/tools/clang/lib/Sema/SemaChecking.cpp"
, 14148, __PRETTY_FUNCTION__));

// Not the scope of this diagnostic.
if (!AnyIsPacked)
  return;

const Expr *TopBase = TopME->getBase()->IgnoreParenImpCasts();
const auto *DRE = dyn_cast<DeclRefExpr>(TopBase);
// TODO: The innermost base of the member expression may be too complicated.
// For now, just disregard these cases. This is left for future
// improvement.
if (!DRE && !isa<CXXThisExpr>(TopBase))
    return;

// Alignment expected by the whole expression.
CharUnits ExpectedAlignment = Context.getTypeAlignInChars(E->getType());

// No need to do anything else with this case.
if (ExpectedAlignment.isOne())
  return;

// Synthesize offset of the whole access.
CharUnits Offset;
for (auto I = ReverseMemberChain.rbegin(); I != ReverseMemberChain.rend();
     I++) {
  Offset += Context.toCharUnitsFromBits(Context.getFieldOffset(*I));
}

// Compute the CompleteObjectAlignment as the alignment of the whole chain.
CharUnits CompleteObjectAlignment = Context.getTypeAlignInChars(
    ReverseMemberChain.back()->getParent()->getTypeForDecl());

// The base expression of the innermost MemberExpr may give
// stronger guarantees than the class containing the member.
if (DRE && !TopME->isArrow()) {
  const ValueDecl *VD = DRE->getDecl();
  if (!VD->getType()->isReferenceType())
    CompleteObjectAlignment =
        std::max(CompleteObjectAlignment, Context.getDeclAlign(VD));
}

// Check if the synthesized offset fulfills the alignment.
if (Offset % ExpectedAlignment != 0 ||
    // It may fulfill the offset it but the effective alignment may still be
    // lower than the expected expression alignment.
    CompleteObjectAlignment < ExpectedAlignment) {
  // If this happens, we want to determine a sensible culprit of this.
  // Intuitively, watching the chain of member expressions from right to
  // left, we start with the required alignment (as required by the field
  // type) but some packed attribute in that chain has reduced the alignment.
  // It may happen that another packed structure increases it again. But if
  // we are here such increase has not been enough. So pointing the first
  // FieldDecl that either is packed or else its RecordDecl is,
  // seems reasonable.
  FieldDecl *FD = nullptr;
  CharUnits Alignment;
  for (FieldDecl *FDI : ReverseMemberChain) {
    if (FDI->hasAttr<PackedAttr>() ||
        FDI->getParent()->hasAttr<PackedAttr>()) {
      FD = FDI;
      Alignment = std::min(
          Context.getTypeAlignInChars(FD->getType()),
          Context.getTypeAlignInChars(FD->getParent()->getTypeForDecl()));
      break;
    }
  }
  assert(FD && "We did not find a packed FieldDecl!")((FD && "We did not find a packed FieldDecl!") ? static_cast
<void> (0) : __assert_fail ("FD && \"We did not find a packed FieldDecl!\""
, "/build/llvm-toolchain-snapshot-9~svn362543/tools/clang/lib/Sema/SemaChecking.cpp"
, 14214, __PRETTY_FUNCTION__));
  Action(E, FD->getParent(), FD, Alignment);
}
14217}

14219void Sema::CheckAddressOfPackedMember(Expr *rhs) {
using namespace std::placeholders;

RefersToMemberWithReducedAlignment(
    rhs, std::bind(&Sema::AddPotentialMisalignedMembers, std::ref(*this), _1,
                   _2, _3, _4));
14225}

←

/build/llvm-toolchain-snapshot-9~svn362543/include/llvm/ADT/SmallBitVector.h

1//===- llvm/ADT/SmallBitVector.h - 'Normally small' bit vectors -*- C++ -*-===//
2//
3// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4// See https://llvm.org/LICENSE.txt for license information.
5// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6//
7//===----------------------------------------------------------------------===//
8//
9// This file implements the SmallBitVector class.
10//
11//===----------------------------------------------------------------------===//

13#ifndef LLVM_ADT_SMALLBITVECTOR_H
14#define LLVM_ADT_SMALLBITVECTOR_H

16#include "llvm/ADT/BitVector.h"
17#include "llvm/ADT/iterator_range.h"
18#include "llvm/Support/MathExtras.h"
19#include <algorithm>
20#include <cassert>
21#include <climits>
22#include <cstddef>
23#include <cstdint>
24#include <limits>
25#include <utility>

27namespace llvm {

29/// This is a 'bitvector' (really, a variable-sized bit array), optimized for
30/// the case when the array is small. It contains one pointer-sized field, which
31/// is directly used as a plain collection of bits when possible, or as a
32/// pointer to a larger heap-allocated array when necessary. This allows normal
33/// "small" cases to be fast without losing generality for large inputs.
34class SmallBitVector {
// TODO: In "large" mode, a pointer to a BitVector is used, leading to an
// unnecessary level of indirection. It would be more efficient to use a
// pointer to memory containing size, allocation size, and the array of bits.
uintptr_t X = 1;

enum {
  // The number of bits in this class.
  NumBaseBits = sizeof(uintptr_t) * CHAR_BIT8,

  // One bit is used to discriminate between small and large mode. The
  // remaining bits are used for the small-mode representation.
  SmallNumRawBits = NumBaseBits - 1,

  // A few more bits are used to store the size of the bit set in small mode.
  // Theoretically this is a ceil-log2. These bits are encoded in the most
  // significant bits of the raw bits.
  SmallNumSizeBits = (NumBaseBits == 32 ? 5 :
                      NumBaseBits == 64 ? 6 :
                      SmallNumRawBits),

  // The remaining bits are used to store the actual set in small mode.
  SmallNumDataBits = SmallNumRawBits - SmallNumSizeBits
};

static_assert(NumBaseBits == 64 || NumBaseBits == 32,
              "Unsupported word size");

62public:
using size_type = unsigned;

// Encapsulation of a single bit.
class reference {
  SmallBitVector &TheVector;
  unsigned BitPos;

public:
  reference(SmallBitVector &b, unsigned Idx) : TheVector(b), BitPos(Idx) {}

  reference(const reference&) = default;

  reference& operator=(reference t) {
    *this = bool(t);
    return *this;
  }

  reference& operator=(bool t) {
    if (t)
      TheVector.set(BitPos);
    else
      TheVector.reset(BitPos);
    return *this;
  }

  operator bool() const {
    return const_cast<const SmallBitVector &>(TheVector).operator[](BitPos);
  }
};

93private:
BitVector *getPointer() const {
  assert(!isSmall())((!isSmall()) ? static_cast<void> (0) : __assert_fail (
"!isSmall()", "/build/llvm-toolchain-snapshot-9~svn362543/include/llvm/ADT/SmallBitVector.h"
, 95, __PRETTY_FUNCTION__));
  return reinterpret_cast<BitVector *>(X);
}

void switchToSmall(uintptr_t NewSmallBits, size_t NewSize) {
  X = 1;
  setSmallSize(NewSize);
  setSmallBits(NewSmallBits);
}

void switchToLarge(BitVector *BV) {
  X = reinterpret_cast<uintptr_t>(BV);
  assert(!isSmall() && "Tried to use an unaligned pointer")((!isSmall() && "Tried to use an unaligned pointer") ?
 static_cast<void> (0) : __assert_fail ("!isSmall() && \"Tried to use an unaligned pointer\""
, "/build/llvm-toolchain-snapshot-9~svn362543/include/llvm/ADT/SmallBitVector.h"
, 107, __PRETTY_FUNCTION__));
}

// Return all the bits used for the "small" representation; this includes
// bits for the size as well as the element bits.
uintptr_t getSmallRawBits() const {
  assert(isSmall())((isSmall()) ? static_cast<void> (0) : __assert_fail ("isSmall()"
, "/build/llvm-toolchain-snapshot-9~svn362543/include/llvm/ADT/SmallBitVector.h"
, 113, __PRETTY_FUNCTION__));
  return X >> 1;
}

void setSmallRawBits(uintptr_t NewRawBits) {
  assert(isSmall())((isSmall()) ? static_cast<void> (0) : __assert_fail ("isSmall()"
, "/build/llvm-toolchain-snapshot-9~svn362543/include/llvm/ADT/SmallBitVector.h"
, 118, __PRETTY_FUNCTION__));
29
←
Assuming the condition is true→
30
←
'?' condition is true→
  X = (NewRawBits << 1) | uintptr_t(1);
}
31
←
Potential memory leak

// Return the size.
size_t getSmallSize() const { return getSmallRawBits() >> SmallNumDataBits; }

void setSmallSize(size_t Size) {
  setSmallRawBits(getSmallBits() | (Size << SmallNumDataBits));
}

// Return the element bits.
uintptr_t getSmallBits() const {
  return getSmallRawBits() & ~(~uintptr_t(0) << getSmallSize());
}

void setSmallBits(uintptr_t NewBits) {
  setSmallRawBits((NewBits & ~(~uintptr_t(0) << getSmallSize())) |
28
←
Calling 'SmallBitVector::setSmallRawBits'→
                  (getSmallSize() << SmallNumDataBits));
}

139public:
/// Creates an empty bitvector.
SmallBitVector() = default;

/// Creates a bitvector of specified number of bits. All bits are initialized
/// to the specified value.
explicit SmallBitVector(unsigned s, bool t = false) {
  if (s <= SmallNumDataBits)
    switchToSmall(t ? ~uintptr_t(0) : 0, s);
  else
    switchToLarge(new BitVector(s, t));
}

/// SmallBitVector copy ctor.
SmallBitVector(const SmallBitVector &RHS) {
  if (RHS.isSmall())
    X = RHS.X;
  else
    switchToLarge(new BitVector(*RHS.getPointer()));
}

SmallBitVector(SmallBitVector &&RHS) : X(RHS.X) {
  RHS.X = 1;
}

~SmallBitVector() {
  if (!isSmall())
    delete getPointer();
}

using const_set_bits_iterator = const_set_bits_iterator_impl<SmallBitVector>;
using set_iterator = const_set_bits_iterator;

const_set_bits_iterator set_bits_begin() const {
  return const_set_bits_iterator(*this);
}

const_set_bits_iterator set_bits_end() const {
  return const_set_bits_iterator(*this, -1);
}

iterator_range<const_set_bits_iterator> set_bits() const {
  return make_range(set_bits_begin(), set_bits_end());
}

bool isSmall() const { return X & uintptr_t(1); }

/// Tests whether there are no bits in this bitvector.
bool empty() const {
  return isSmall() ? getSmallSize() == 0 : getPointer()->empty();
}

/// Returns the number of bits in this bitvector.
size_t size() const {
  return isSmall() ? getSmallSize() : getPointer()->size();
}

/// Returns the number of bits which are set.
size_type count() const {
  if (isSmall()) {
    uintptr_t Bits = getSmallBits();
    return countPopulation(Bits);
  }
  return getPointer()->count();
}

/// Returns true if any bit is set.
bool any() const {
  if (isSmall())
    return getSmallBits() != 0;
  return getPointer()->any();
}

/// Returns true if all bits are set.
bool all() const {
  if (isSmall())
    return getSmallBits() == (uintptr_t(1) << getSmallSize()) - 1;
  return getPointer()->all();
}

/// Returns true if none of the bits are set.
bool none() const {
  if (isSmall())
    return getSmallBits() == 0;
  return getPointer()->none();
}

/// Returns the index of the first set bit, -1 if none of the bits are set.
int find_first() const {
  if (isSmall()) {
    uintptr_t Bits = getSmallBits();
    if (Bits == 0)
      return -1;
    return countTrailingZeros(Bits);
  }
  return getPointer()->find_first();
}

int find_last() const {
  if (isSmall()) {
    uintptr_t Bits = getSmallBits();
    if (Bits == 0)
      return -1;
    return NumBaseBits - countLeadingZeros(Bits) - 1;
  }
  return getPointer()->find_last();
}

/// Returns the index of the first unset bit, -1 if all of the bits are set.
int find_first_unset() const {
  if (isSmall()) {
    if (count() == getSmallSize())
      return -1;

    uintptr_t Bits = getSmallBits();
    return countTrailingOnes(Bits);
  }
  return getPointer()->find_first_unset();
}

int find_last_unset() const {
  if (isSmall()) {
    if (count() == getSmallSize())
      return -1;

    uintptr_t Bits = getSmallBits();
    // Set unused bits.
    Bits |= ~uintptr_t(0) << getSmallSize();
    return NumBaseBits - countLeadingOnes(Bits) - 1;
  }
  return getPointer()->find_last_unset();
}

/// Returns the index of the next set bit following the "Prev" bit.
/// Returns -1 if the next set bit is not found.
int find_next(unsigned Prev) const {
  if (isSmall()) {
    uintptr_t Bits = getSmallBits();
    // Mask off previous bits.
    Bits &= ~uintptr_t(0) << (Prev + 1);
    if (Bits == 0 || Prev + 1 >= getSmallSize())
      return -1;
    return countTrailingZeros(Bits);
  }
  return getPointer()->find_next(Prev);
}

/// Returns the index of the next unset bit following the "Prev" bit.
/// Returns -1 if the next unset bit is not found.
int find_next_unset(unsigned Prev) const {
  if (isSmall()) {
    ++Prev;
    uintptr_t Bits = getSmallBits();
    // Mask in previous bits.
    uintptr_t Mask = (1 << Prev) - 1;
    Bits |= Mask;

    if (Bits == ~uintptr_t(0) || Prev + 1 >= getSmallSize())
      return -1;
    return countTrailingOnes(Bits);
  }
  return getPointer()->find_next_unset(Prev);
}

/// find_prev - Returns the index of the first set bit that precedes the
/// the bit at \p PriorTo.  Returns -1 if all previous bits are unset.
int find_prev(unsigned PriorTo) const {
  if (isSmall()) {
    if (PriorTo == 0)
      return -1;

    --PriorTo;
    uintptr_t Bits = getSmallBits();
    Bits &= maskTrailingOnes<uintptr_t>(PriorTo + 1);
    if (Bits == 0)
      return -1;

    return NumBaseBits - countLeadingZeros(Bits) - 1;
  }
  return getPointer()->find_prev(PriorTo);
}

/// Clear all bits.
void clear() {
  if (!isSmall())
    delete getPointer();
  switchToSmall(0, 0);
}

/// Grow or shrink the bitvector.
void resize(unsigned N, bool t = false) {
  if (!isSmall()) {
17
←
Taking false branch→
    getPointer()->resize(N, t);
  } else if (SmallNumDataBits >= N) {
18
←
Assuming 'N' is > SmallNumDataBits→
19
←
Taking false branch→
    uintptr_t NewBits = t ? ~uintptr_t(0) << getSmallSize() : 0;
    setSmallSize(N);
    setSmallBits(NewBits | getSmallBits());
  } else {
    BitVector *BV = new BitVector(N, t);
20
←
Memory is allocated→
    uintptr_t OldBits = getSmallBits();
    for (size_t i = 0, e = getSmallSize(); i != e; ++i)
21
←
Loop condition is false. Execution continues on line 341→
      (*BV)[i] = (OldBits >> i) & 1;
    switchToLarge(BV);
  }
}

void reserve(unsigned N) {
  if (isSmall()) {
    if (N > SmallNumDataBits) {
      uintptr_t OldBits = getSmallRawBits();
      size_t SmallSize = getSmallSize();
      BitVector *BV = new BitVector(SmallSize);
      for (size_t i = 0; i < SmallSize; ++i)
        if ((OldBits >> i) & 1)
          BV->set(i);
      BV->reserve(N);
      switchToLarge(BV);
    }
  } else {
    getPointer()->reserve(N);
  }
}

// Set, reset, flip
SmallBitVector &set() {
  if (isSmall())
    setSmallBits(~uintptr_t(0));
  else
    getPointer()->set();
  return *this;
}

SmallBitVector &set(unsigned Idx) {
  if (isSmall()) {
24
←
Assuming the condition is true→
25
←
Taking true branch→
    assert(Idx <= static_cast<unsigned>(((Idx <= static_cast<unsigned>( std::numeric_limits<
uintptr_t>::digits) && "undefined behavior") ? static_cast
<void> (0) : __assert_fail ("Idx <= static_cast<unsigned>( std::numeric_limits<uintptr_t>::digits) && \"undefined behavior\""
, "/build/llvm-toolchain-snapshot-9~svn362543/include/llvm/ADT/SmallBitVector.h"
, 375, __PRETTY_FUNCTION__))
26
←
'?' condition is true→
                      std::numeric_limits<uintptr_t>::digits) &&((Idx <= static_cast<unsigned>( std::numeric_limits<
uintptr_t>::digits) && "undefined behavior") ? static_cast
<void> (0) : __assert_fail ("Idx <= static_cast<unsigned>( std::numeric_limits<uintptr_t>::digits) && \"undefined behavior\""
, "/build/llvm-toolchain-snapshot-9~svn362543/include/llvm/ADT/SmallBitVector.h"
, 375, __PRETTY_FUNCTION__))
           "undefined behavior")((Idx <= static_cast<unsigned>( std::numeric_limits<
uintptr_t>::digits) && "undefined behavior") ? static_cast
<void> (0) : __assert_fail ("Idx <= static_cast<unsigned>( std::numeric_limits<uintptr_t>::digits) && \"undefined behavior\""
, "/build/llvm-toolchain-snapshot-9~svn362543/include/llvm/ADT/SmallBitVector.h"
, 375, __PRETTY_FUNCTION__));
    setSmallBits(getSmallBits() | (uintptr_t(1) << Idx));
27
←
Calling 'SmallBitVector::setSmallBits'→
  }
  else
    getPointer()->set(Idx);
  return *this;
}

/// Efficiently set a range of bits in [I, E)
SmallBitVector &set(unsigned I, unsigned E) {
  assert(I <= E && "Attempted to set backwards range!")((I <= E && "Attempted to set backwards range!") ?
 static_cast<void> (0) : __assert_fail ("I <= E && \"Attempted to set backwards range!\""
, "/build/llvm-toolchain-snapshot-9~svn362543/include/llvm/ADT/SmallBitVector.h"
, 385, __PRETTY_FUNCTION__));
  assert(E <= size() && "Attempted to set out-of-bounds range!")((E <= size() && "Attempted to set out-of-bounds range!"
) ? static_cast<void> (0) : __assert_fail ("E <= size() && \"Attempted to set out-of-bounds range!\""
, "/build/llvm-toolchain-snapshot-9~svn362543/include/llvm/ADT/SmallBitVector.h"
, 386, __PRETTY_FUNCTION__));
  if (I == E) return *this;
  if (isSmall()) {
    uintptr_t EMask = ((uintptr_t)1) << E;
    uintptr_t IMask = ((uintptr_t)1) << I;
    uintptr_t Mask = EMask - IMask;
    setSmallBits(getSmallBits() | Mask);
  } else
    getPointer()->set(I, E);
  return *this;
}

SmallBitVector &reset() {
  if (isSmall())
    setSmallBits(0);
  else
    getPointer()->reset();
  return *this;
}

SmallBitVector &reset(unsigned Idx) {
  if (isSmall())
    setSmallBits(getSmallBits() & ~(uintptr_t(1) << Idx));
  else
    getPointer()->reset(Idx);
  return *this;
}

/// Efficiently reset a range of bits in [I, E)
SmallBitVector &reset(unsigned I, unsigned E) {
  assert(I <= E && "Attempted to reset backwards range!")((I <= E && "Attempted to reset backwards range!")
 ? static_cast<void> (0) : __assert_fail ("I <= E && \"Attempted to reset backwards range!\""
, "/build/llvm-toolchain-snapshot-9~svn362543/include/llvm/ADT/SmallBitVector.h"
, 416, __PRETTY_FUNCTION__));
  assert(E <= size() && "Attempted to reset out-of-bounds range!")((E <= size() && "Attempted to reset out-of-bounds range!"
) ? static_cast<void> (0) : __assert_fail ("E <= size() && \"Attempted to reset out-of-bounds range!\""
, "/build/llvm-toolchain-snapshot-9~svn362543/include/llvm/ADT/SmallBitVector.h"
, 417, __PRETTY_FUNCTION__));
  if (I == E) return *this;
  if (isSmall()) {
    uintptr_t EMask = ((uintptr_t)1) << E;
    uintptr_t IMask = ((uintptr_t)1) << I;
    uintptr_t Mask = EMask - IMask;
    setSmallBits(getSmallBits() & ~Mask);
  } else
    getPointer()->reset(I, E);
  return *this;
}

SmallBitVector &flip() {
  if (isSmall())
    setSmallBits(~getSmallBits());
  else
    getPointer()->flip();
  return *this;
}

SmallBitVector &flip(unsigned Idx) {
  if (isSmall())
    setSmallBits(getSmallBits() ^ (uintptr_t(1) << Idx));
  else
    getPointer()->flip(Idx);
  return *this;
}

// No argument flip.
SmallBitVector operator~() const {
  return SmallBitVector(*this).flip();
}

// Indexing.
reference operator[](unsigned Idx) {
  assert(Idx < size() && "Out-of-bounds Bit access.")((Idx < size() && "Out-of-bounds Bit access.") ? static_cast
<void> (0) : __assert_fail ("Idx < size() && \"Out-of-bounds Bit access.\""
, "/build/llvm-toolchain-snapshot-9~svn362543/include/llvm/ADT/SmallBitVector.h"
, 452, __PRETTY_FUNCTION__));
  return reference(*this, Idx);
}

bool operator[](unsigned Idx) const {
  assert(Idx < size() && "Out-of-bounds Bit access.")((Idx < size() && "Out-of-bounds Bit access.") ? static_cast
<void> (0) : __assert_fail ("Idx < size() && \"Out-of-bounds Bit access.\""
, "/build/llvm-toolchain-snapshot-9~svn362543/include/llvm/ADT/SmallBitVector.h"
, 457, __PRETTY_FUNCTION__));
  if (isSmall())
    return ((getSmallBits() >> Idx) & 1) != 0;
  return getPointer()->operator[](Idx);
}

bool test(unsigned Idx) const {
  return (*this)[Idx];
}

// Push single bit to end of vector.
void push_back(bool Val) {
  resize(size() + 1, Val);
}

/// Test if any common bits are set.
bool anyCommon(const SmallBitVector &RHS) const {
  if (isSmall() && RHS.isSmall())
    return (getSmallBits() & RHS.getSmallBits()) != 0;
  if (!isSmall() && !RHS.isSmall())
    return getPointer()->anyCommon(*RHS.getPointer());

  for (unsigned i = 0, e = std::min(size(), RHS.size()); i != e; ++i)
    if (test(i) && RHS.test(i))
      return true;
  return false;
}

// Comparison operators.
bool operator==(const SmallBitVector &RHS) const {
  if (size() != RHS.size())
    return false;
  if (isSmall() && RHS.isSmall())
    return getSmallBits() == RHS.getSmallBits();
  else if (!isSmall() && !RHS.isSmall())
    return *getPointer() == *RHS.getPointer();
  else {
    for (size_t i = 0, e = size(); i != e; ++i) {
      if ((*this)[i] != RHS[i])
        return false;
    }
    return true;
  }
}

bool operator!=(const SmallBitVector &RHS) const {
  return !(*this == RHS);
}

// Intersection, union, disjoint union.
// FIXME BitVector::operator&= does not resize the LHS but this does
SmallBitVector &operator&=(const SmallBitVector &RHS) {
  resize(std::max(size(), RHS.size()));
  if (isSmall() && RHS.isSmall())
    setSmallBits(getSmallBits() & RHS.getSmallBits());
  else if (!isSmall() && !RHS.isSmall())
    getPointer()->operator&=(*RHS.getPointer());
  else {
    size_t i, e;
    for (i = 0, e = std::min(size(), RHS.size()); i != e; ++i)
      (*this)[i] = test(i) && RHS.test(i);
    for (e = size(); i != e; ++i)
      reset(i);
  }
  return *this;
}

/// Reset bits that are set in RHS. Same as *this &= ~RHS.
SmallBitVector &reset(const SmallBitVector &RHS) {
  if (isSmall() && RHS.isSmall())
    setSmallBits(getSmallBits() & ~RHS.getSmallBits());
  else if (!isSmall() && !RHS.isSmall())
    getPointer()->reset(*RHS.getPointer());
  else
    for (unsigned i = 0, e = std::min(size(), RHS.size()); i != e; ++i)
      if (RHS.test(i))
        reset(i);

  return *this;
}

/// Check if (This - RHS) is zero. This is the same as reset(RHS) and any().
bool test(const SmallBitVector &RHS) const {
  if (isSmall() && RHS.isSmall())
    return (getSmallBits() & ~RHS.getSmallBits()) != 0;
  if (!isSmall() && !RHS.isSmall())
    return getPointer()->test(*RHS.getPointer());

  unsigned i, e;
  for (i = 0, e = std::min(size(), RHS.size()); i != e; ++i)
    if (test(i) && !RHS.test(i))
      return true;

  for (e = size(); i != e; ++i)
    if (test(i))
      return true;

  return false;
}

SmallBitVector &operator|=(const SmallBitVector &RHS) {
  resize(std::max(size(), RHS.size()));
  if (isSmall() && RHS.isSmall())
    setSmallBits(getSmallBits() | RHS.getSmallBits());
  else if (!isSmall() && !RHS.isSmall())
    getPointer()->operator|=(*RHS.getPointer());
  else {
    for (size_t i = 0, e = RHS.size(); i != e; ++i)
      (*this)[i] = test(i) || RHS.test(i);
  }
  return *this;
}

SmallBitVector &operator^=(const SmallBitVector &RHS) {
  resize(std::max(size(), RHS.size()));
  if (isSmall() && RHS.isSmall())
    setSmallBits(getSmallBits() ^ RHS.getSmallBits());
  else if (!isSmall() && !RHS.isSmall())
    getPointer()->operator^=(*RHS.getPointer());
  else {
    for (size_t i = 0, e = RHS.size(); i != e; ++i)
      (*this)[i] = test(i) != RHS.test(i);
  }
  return *this;
}

SmallBitVector &operator<<=(unsigned N) {
  if (isSmall())
    setSmallBits(getSmallBits() << N);
  else
    getPointer()->operator<<=(N);
  return *this;
}

SmallBitVector &operator>>=(unsigned N) {
  if (isSmall())
    setSmallBits(getSmallBits() >> N);
  else
    getPointer()->operator>>=(N);
  return *this;
}

// Assignment operator.
const SmallBitVector &operator=(const SmallBitVector &RHS) {
  if (isSmall()) {
    if (RHS.isSmall())
      X = RHS.X;
    else
      switchToLarge(new BitVector(*RHS.getPointer()));
  } else {
    if (!RHS.isSmall())
      *getPointer() = *RHS.getPointer();
    else {
      delete getPointer();
      X = RHS.X;
    }
  }
  return *this;
}

const SmallBitVector &operator=(SmallBitVector &&RHS) {
  if (this != &RHS) {
    clear();
    swap(RHS);
  }
  return *this;
}

void swap(SmallBitVector &RHS) {
  std::swap(X, RHS.X);
}

/// Add '1' bits from Mask to this vector. Don't resize.
/// This computes "*this |= Mask".
void setBitsInMask(const uint32_t *Mask, unsigned MaskWords = ~0u) {
  if (isSmall())
    applyMask<true, false>(Mask, MaskWords);
  else
    getPointer()->setBitsInMask(Mask, MaskWords);
}

/// Clear any bits in this vector that are set in Mask. Don't resize.
/// This computes "*this &= ~Mask".
void clearBitsInMask(const uint32_t *Mask, unsigned MaskWords = ~0u) {
  if (isSmall())
    applyMask<false, false>(Mask, MaskWords);
  else
    getPointer()->clearBitsInMask(Mask, MaskWords);
}

/// Add a bit to this vector for every '0' bit in Mask. Don't resize.
/// This computes "*this |= ~Mask".
void setBitsNotInMask(const uint32_t *Mask, unsigned MaskWords = ~0u) {
  if (isSmall())
    applyMask<true, true>(Mask, MaskWords);
  else
    getPointer()->setBitsNotInMask(Mask, MaskWords);
}

/// Clear a bit in this vector for every '0' bit in Mask. Don't resize.
/// This computes "*this &= Mask".
void clearBitsNotInMask(const uint32_t *Mask, unsigned MaskWords = ~0u) {
  if (isSmall())
    applyMask<false, true>(Mask, MaskWords);
  else
    getPointer()->clearBitsNotInMask(Mask, MaskWords);
}

665private:
template <bool AddBits, bool InvertMask>
void applyMask(const uint32_t *Mask, unsigned MaskWords) {
  assert(MaskWords <= sizeof(uintptr_t) && "Mask is larger than base!")((MaskWords <= sizeof(uintptr_t) && "Mask is larger than base!"
) ? static_cast<void> (0) : __assert_fail ("MaskWords <= sizeof(uintptr_t) && \"Mask is larger than base!\""
, "/build/llvm-toolchain-snapshot-9~svn362543/include/llvm/ADT/SmallBitVector.h"
, 668, __PRETTY_FUNCTION__));
  uintptr_t M = Mask[0];
  if (NumBaseBits == 64)
    M |= uint64_t(Mask[1]) << 32;
  if (InvertMask)
    M = ~M;
  if (AddBits)
    setSmallBits(getSmallBits() | M);
  else
    setSmallBits(getSmallBits() & ~M);
}
679};

681inline SmallBitVector
682operator&(const SmallBitVector &LHS, const SmallBitVector &RHS) {
SmallBitVector Result(LHS);
Result &= RHS;
return Result;
686}

688inline SmallBitVector
689operator|(const SmallBitVector &LHS, const SmallBitVector &RHS) {
SmallBitVector Result(LHS);
Result |= RHS;
return Result;
693}

695inline SmallBitVector
696operator^(const SmallBitVector &LHS, const SmallBitVector &RHS) {
SmallBitVector Result(LHS);
Result ^= RHS;
return Result;
700}

702} // end namespace llvm

704namespace std {

706/// Implement std::swap in terms of BitVector swap.
707inline void
708swap(llvm::SmallBitVector &LHS, llvm::SmallBitVector &RHS) {
LHS.swap(RHS);
710}

712} // end namespace std

714#endif // LLVM_ADT_SMALLBITVECTOR_H