/build/llvm-toolchain-snapshot-13~++20210726100616+dead50d4427c/clang/lib/CodeGen/CodeGenModule.cpp

Bug Summary

File:	clang/lib/CodeGen/CodeGenModule.cpp
Warning:	line 3552, column 27 Called C++ object pointer is null

Annotated Source Code

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clang -cc1 -cc1 -triple x86_64-pc-linux-gnu -analyze -disable-free -disable-llvm-verifier -discard-value-names -main-file-name CodeGenModule.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 -setup-static-analyzer -analyzer-config-compatibility-mode=true -mrelocation-model pic -pic-level 2 -mframe-pointer=none -relaxed-aliasing -fmath-errno -fno-rounding-math -mconstructor-aliases -munwind-tables -target-cpu x86-64 -tune-cpu generic -debugger-tuning=gdb -ffunction-sections -fdata-sections -fcoverage-compilation-dir=/build/llvm-toolchain-snapshot-13~++20210726100616+dead50d4427c/build-llvm/tools/clang/lib/CodeGen -resource-dir /usr/lib/llvm-13/lib/clang/13.0.0 -D CLANG_ROUND_TRIP_CC1_ARGS=ON -D _DEBUG -D _GNU_SOURCE -D __STDC_CONSTANT_MACROS -D __STDC_FORMAT_MACROS -D __STDC_LIMIT_MACROS -I /build/llvm-toolchain-snapshot-13~++20210726100616+dead50d4427c/build-llvm/tools/clang/lib/CodeGen -I /build/llvm-toolchain-snapshot-13~++20210726100616+dead50d4427c/clang/lib/CodeGen -I /build/llvm-toolchain-snapshot-13~++20210726100616+dead50d4427c/clang/include -I /build/llvm-toolchain-snapshot-13~++20210726100616+dead50d4427c/build-llvm/tools/clang/include -I /build/llvm-toolchain-snapshot-13~++20210726100616+dead50d4427c/build-llvm/include -I /build/llvm-toolchain-snapshot-13~++20210726100616+dead50d4427c/llvm/include -D NDEBUG -U NDEBUG -internal-isystem /usr/lib/gcc/x86_64-linux-gnu/10/../../../../include/c++/10 -internal-isystem /usr/lib/gcc/x86_64-linux-gnu/10/../../../../include/x86_64-linux-gnu/c++/10 -internal-isystem /usr/lib/gcc/x86_64-linux-gnu/10/../../../../include/c++/10/backward -internal-isystem /usr/lib/llvm-13/lib/clang/13.0.0/include -internal-isystem /usr/local/include -internal-isystem /usr/lib/gcc/x86_64-linux-gnu/10/../../../../x86_64-linux-gnu/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-class-memaccess -Wno-redundant-move -Wno-pessimizing-move -Wno-noexcept-type -Wno-comment -std=c++14 -fdeprecated-macro -fdebug-compilation-dir=/build/llvm-toolchain-snapshot-13~++20210726100616+dead50d4427c/build-llvm/tools/clang/lib/CodeGen -fdebug-prefix-map=/build/llvm-toolchain-snapshot-13~++20210726100616+dead50d4427c=. -ferror-limit 19 -fvisibility-inlines-hidden -stack-protector 2 -fgnuc-version=4.2.1 -vectorize-loops -vectorize-slp -analyzer-output=html -analyzer-config stable-report-filename=true -faddrsig -D__GCC_HAVE_DWARF2_CFI_ASM=1 -o /tmp/scan-build-2021-07-26-235520-9401-1 -x c++ /build/llvm-toolchain-snapshot-13~++20210726100616+dead50d4427c/clang/lib/CodeGen/CodeGenModule.cpp

/build/llvm-toolchain-snapshot-13~++20210726100616+dead50d4427c/clang/lib/CodeGen/CodeGenModule.cpp

→

1//===--- CodeGenModule.cpp - Emit LLVM Code from ASTs for a Module --------===//
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 coordinates the per-module state used while generating code.
10//
11//===----------------------------------------------------------------------===//

13#include "CodeGenModule.h"
14#include "CGBlocks.h"
15#include "CGCUDARuntime.h"
16#include "CGCXXABI.h"
17#include "CGCall.h"
18#include "CGDebugInfo.h"
19#include "CGObjCRuntime.h"
20#include "CGOpenCLRuntime.h"
21#include "CGOpenMPRuntime.h"
22#include "CGOpenMPRuntimeAMDGCN.h"
23#include "CGOpenMPRuntimeNVPTX.h"
24#include "CodeGenFunction.h"
25#include "CodeGenPGO.h"
26#include "ConstantEmitter.h"
27#include "CoverageMappingGen.h"
28#include "TargetInfo.h"
29#include "clang/AST/ASTContext.h"
30#include "clang/AST/CharUnits.h"
31#include "clang/AST/DeclCXX.h"
32#include "clang/AST/DeclObjC.h"
33#include "clang/AST/DeclTemplate.h"
34#include "clang/AST/Mangle.h"
35#include "clang/AST/RecordLayout.h"
36#include "clang/AST/RecursiveASTVisitor.h"
37#include "clang/AST/StmtVisitor.h"
38#include "clang/Basic/Builtins.h"
39#include "clang/Basic/CharInfo.h"
40#include "clang/Basic/CodeGenOptions.h"
41#include "clang/Basic/Diagnostic.h"
42#include "clang/Basic/FileManager.h"
43#include "clang/Basic/Module.h"
44#include "clang/Basic/SourceManager.h"
45#include "clang/Basic/TargetInfo.h"
46#include "clang/Basic/Version.h"
47#include "clang/CodeGen/ConstantInitBuilder.h"
48#include "clang/Frontend/FrontendDiagnostic.h"
49#include "llvm/ADT/StringSwitch.h"
50#include "llvm/ADT/Triple.h"
51#include "llvm/Analysis/TargetLibraryInfo.h"
52#include "llvm/Frontend/OpenMP/OMPIRBuilder.h"
53#include "llvm/IR/CallingConv.h"
54#include "llvm/IR/DataLayout.h"
55#include "llvm/IR/Intrinsics.h"
56#include "llvm/IR/LLVMContext.h"
57#include "llvm/IR/Module.h"
58#include "llvm/IR/ProfileSummary.h"
59#include "llvm/ProfileData/InstrProfReader.h"
60#include "llvm/Support/CodeGen.h"
61#include "llvm/Support/CommandLine.h"
62#include "llvm/Support/ConvertUTF.h"
63#include "llvm/Support/ErrorHandling.h"
64#include "llvm/Support/MD5.h"
65#include "llvm/Support/TimeProfiler.h"

67using namespace clang;
68using namespace CodeGen;

70static llvm::cl::opt<bool> LimitedCoverage(
  "limited-coverage-experimental", llvm::cl::ZeroOrMore, llvm::cl::Hidden,
  llvm::cl::desc("Emit limited coverage mapping information (experimental)"),
  llvm::cl::init(false));

75static const char AnnotationSection[] = "llvm.metadata";

77static CGCXXABI *createCXXABI(CodeGenModule &CGM) {
switch (CGM.getContext().getCXXABIKind()) {
case TargetCXXABI::AppleARM64:
case TargetCXXABI::Fuchsia:
case TargetCXXABI::GenericAArch64:
case TargetCXXABI::GenericARM:
case TargetCXXABI::iOS:
case TargetCXXABI::WatchOS:
case TargetCXXABI::GenericMIPS:
case TargetCXXABI::GenericItanium:
case TargetCXXABI::WebAssembly:
case TargetCXXABI::XL:
  return CreateItaniumCXXABI(CGM);
case TargetCXXABI::Microsoft:
  return CreateMicrosoftCXXABI(CGM);
}

llvm_unreachable("invalid C++ ABI kind")::llvm::llvm_unreachable_internal("invalid C++ ABI kind", "/build/llvm-toolchain-snapshot-13~++20210726100616+dead50d4427c/clang/lib/CodeGen/CodeGenModule.cpp"
, 94);
95}

97CodeGenModule::CodeGenModule(ASTContext &C, const HeaderSearchOptions &HSO,
                           const PreprocessorOptions &PPO,
                           const CodeGenOptions &CGO, llvm::Module &M,
                           DiagnosticsEngine &diags,
                           CoverageSourceInfo *CoverageInfo)
  : Context(C), LangOpts(C.getLangOpts()), HeaderSearchOpts(HSO),
    PreprocessorOpts(PPO), CodeGenOpts(CGO), TheModule(M), Diags(diags),
    Target(C.getTargetInfo()), ABI(createCXXABI(*this)),
    VMContext(M.getContext()), Types(*this), VTables(*this),
    SanitizerMD(new SanitizerMetadata(*this)) {

// Initialize the type cache.
llvm::LLVMContext &LLVMContext = M.getContext();
VoidTy = llvm::Type::getVoidTy(LLVMContext);
Int8Ty = llvm::Type::getInt8Ty(LLVMContext);
Int16Ty = llvm::Type::getInt16Ty(LLVMContext);
Int32Ty = llvm::Type::getInt32Ty(LLVMContext);
Int64Ty = llvm::Type::getInt64Ty(LLVMContext);
HalfTy = llvm::Type::getHalfTy(LLVMContext);
BFloatTy = llvm::Type::getBFloatTy(LLVMContext);
FloatTy = llvm::Type::getFloatTy(LLVMContext);
DoubleTy = llvm::Type::getDoubleTy(LLVMContext);
PointerWidthInBits = C.getTargetInfo().getPointerWidth(0);
PointerAlignInBytes =
  C.toCharUnitsFromBits(C.getTargetInfo().getPointerAlign(0)).getQuantity();
SizeSizeInBytes =
  C.toCharUnitsFromBits(C.getTargetInfo().getMaxPointerWidth()).getQuantity();
IntAlignInBytes =
  C.toCharUnitsFromBits(C.getTargetInfo().getIntAlign()).getQuantity();
CharTy =
  llvm::IntegerType::get(LLVMContext, C.getTargetInfo().getCharWidth());
IntTy = llvm::IntegerType::get(LLVMContext, C.getTargetInfo().getIntWidth());
IntPtrTy = llvm::IntegerType::get(LLVMContext,
  C.getTargetInfo().getMaxPointerWidth());
Int8PtrTy = Int8Ty->getPointerTo(0);
Int8PtrPtrTy = Int8PtrTy->getPointerTo(0);
AllocaInt8PtrTy = Int8Ty->getPointerTo(
    M.getDataLayout().getAllocaAddrSpace());
ASTAllocaAddressSpace = getTargetCodeGenInfo().getASTAllocaAddressSpace();

RuntimeCC = getTargetCodeGenInfo().getABIInfo().getRuntimeCC();

if (LangOpts.ObjC)
  createObjCRuntime();
if (LangOpts.OpenCL)
  createOpenCLRuntime();
if (LangOpts.OpenMP)
  createOpenMPRuntime();
if (LangOpts.CUDA)
  createCUDARuntime();

// Enable TBAA unless it's suppressed. ThreadSanitizer needs TBAA even at O0.
if (LangOpts.Sanitize.has(SanitizerKind::Thread) ||
    (!CodeGenOpts.RelaxedAliasing && CodeGenOpts.OptimizationLevel > 0))
  TBAA.reset(new CodeGenTBAA(Context, TheModule, CodeGenOpts, getLangOpts(),
                             getCXXABI().getMangleContext()));

// If debug info or coverage generation is enabled, create the CGDebugInfo
// object.
if (CodeGenOpts.getDebugInfo() != codegenoptions::NoDebugInfo ||
    CodeGenOpts.EmitGcovArcs || CodeGenOpts.EmitGcovNotes)
  DebugInfo.reset(new CGDebugInfo(*this));

Block.GlobalUniqueCount = 0;

if (C.getLangOpts().ObjC)
  ObjCData.reset(new ObjCEntrypoints());

if (CodeGenOpts.hasProfileClangUse()) {
  auto ReaderOrErr = llvm::IndexedInstrProfReader::create(
      CodeGenOpts.ProfileInstrumentUsePath, CodeGenOpts.ProfileRemappingFile);
  if (auto E = ReaderOrErr.takeError()) {
    unsigned DiagID = Diags.getCustomDiagID(DiagnosticsEngine::Error,
                                            "Could not read profile %0: %1");
    llvm::handleAllErrors(std::move(E), [&](const llvm::ErrorInfoBase &EI) {
      getDiags().Report(DiagID) << CodeGenOpts.ProfileInstrumentUsePath
                                << EI.message();
    });
  } else
    PGOReader = std::move(ReaderOrErr.get());
}

// If coverage mapping generation is enabled, create the
// CoverageMappingModuleGen object.
if (CodeGenOpts.CoverageMapping)
  CoverageMapping.reset(new CoverageMappingModuleGen(*this, *CoverageInfo));

// Generate the module name hash here if needed.
if (CodeGenOpts.UniqueInternalLinkageNames &&
    !getModule().getSourceFileName().empty()) {
  std::string Path = getModule().getSourceFileName();
  // Check if a path substitution is needed from the MacroPrefixMap.
  for (const auto &Entry : PPO.MacroPrefixMap)
    if (Path.rfind(Entry.first, 0) != std::string::npos) {
      Path = Entry.second + Path.substr(Entry.first.size());
      break;
    }
  llvm::MD5 Md5;
  Md5.update(Path);
  llvm::MD5::MD5Result R;
  Md5.final(R);
  SmallString<32> Str;
  llvm::MD5::stringifyResult(R, Str);
  // Convert MD5hash to Decimal. Demangler suffixes can either contain
  // numbers or characters but not both.
  llvm::APInt IntHash(128, Str.str(), 16);
  // Prepend "__uniq" before the hash for tools like profilers to understand
  // that this symbol is of internal linkage type.  The "__uniq" is the
  // pre-determined prefix that is used to tell tools that this symbol was
  // created with -funique-internal-linakge-symbols and the tools can strip or
  // keep the prefix as needed.
  ModuleNameHash = (Twine(".__uniq.") +
      Twine(toString(IntHash, /* Radix = */ 10, /* Signed = */false))).str();
}
211}

213CodeGenModule::~CodeGenModule() {}

215void CodeGenModule::createObjCRuntime() {
// This is just isGNUFamily(), but we want to force implementors of
// new ABIs to decide how best to do this.
switch (LangOpts.ObjCRuntime.getKind()) {
case ObjCRuntime::GNUstep:
case ObjCRuntime::GCC:
case ObjCRuntime::ObjFW:
  ObjCRuntime.reset(CreateGNUObjCRuntime(*this));
  return;

case ObjCRuntime::FragileMacOSX:
case ObjCRuntime::MacOSX:
case ObjCRuntime::iOS:
case ObjCRuntime::WatchOS:
  ObjCRuntime.reset(CreateMacObjCRuntime(*this));
  return;
}
llvm_unreachable("bad runtime kind")::llvm::llvm_unreachable_internal("bad runtime kind", "/build/llvm-toolchain-snapshot-13~++20210726100616+dead50d4427c/clang/lib/CodeGen/CodeGenModule.cpp"
, 232);
233}

235void CodeGenModule::createOpenCLRuntime() {
OpenCLRuntime.reset(new CGOpenCLRuntime(*this));
237}

239void CodeGenModule::createOpenMPRuntime() {
// Select a specialized code generation class based on the target, if any.
// If it does not exist use the default implementation.
switch (getTriple().getArch()) {
case llvm::Triple::nvptx:
case llvm::Triple::nvptx64:
  assert(getLangOpts().OpenMPIsDevice &&(static_cast <bool> (getLangOpts().OpenMPIsDevice &&
 "OpenMP NVPTX is only prepared to deal with device code.") ?
 void (0) : __assert_fail ("getLangOpts().OpenMPIsDevice && \"OpenMP NVPTX is only prepared to deal with device code.\""
, "/build/llvm-toolchain-snapshot-13~++20210726100616+dead50d4427c/clang/lib/CodeGen/CodeGenModule.cpp"
, 246, __extension__ __PRETTY_FUNCTION__))
         "OpenMP NVPTX is only prepared to deal with device code.")(static_cast <bool> (getLangOpts().OpenMPIsDevice &&
 "OpenMP NVPTX is only prepared to deal with device code.") ?
 void (0) : __assert_fail ("getLangOpts().OpenMPIsDevice && \"OpenMP NVPTX is only prepared to deal with device code.\""
, "/build/llvm-toolchain-snapshot-13~++20210726100616+dead50d4427c/clang/lib/CodeGen/CodeGenModule.cpp"
, 246, __extension__ __PRETTY_FUNCTION__));
  OpenMPRuntime.reset(new CGOpenMPRuntimeNVPTX(*this));
  break;
case llvm::Triple::amdgcn:
  assert(getLangOpts().OpenMPIsDevice &&(static_cast <bool> (getLangOpts().OpenMPIsDevice &&
 "OpenMP AMDGCN is only prepared to deal with device code.") ?
 void (0) : __assert_fail ("getLangOpts().OpenMPIsDevice && \"OpenMP AMDGCN is only prepared to deal with device code.\""
, "/build/llvm-toolchain-snapshot-13~++20210726100616+dead50d4427c/clang/lib/CodeGen/CodeGenModule.cpp"
, 251, __extension__ __PRETTY_FUNCTION__))
         "OpenMP AMDGCN is only prepared to deal with device code.")(static_cast <bool> (getLangOpts().OpenMPIsDevice &&
 "OpenMP AMDGCN is only prepared to deal with device code.") ?
 void (0) : __assert_fail ("getLangOpts().OpenMPIsDevice && \"OpenMP AMDGCN is only prepared to deal with device code.\""
, "/build/llvm-toolchain-snapshot-13~++20210726100616+dead50d4427c/clang/lib/CodeGen/CodeGenModule.cpp"
, 251, __extension__ __PRETTY_FUNCTION__));
  OpenMPRuntime.reset(new CGOpenMPRuntimeAMDGCN(*this));
  break;
default:
  if (LangOpts.OpenMPSimd)
    OpenMPRuntime.reset(new CGOpenMPSIMDRuntime(*this));
  else
    OpenMPRuntime.reset(new CGOpenMPRuntime(*this));
  break;
}
261}

263void CodeGenModule::createCUDARuntime() {
CUDARuntime.reset(CreateNVCUDARuntime(*this));
265}

267void CodeGenModule::addReplacement(StringRef Name, llvm::Constant *C) {
Replacements[Name] = C;
269}

271void CodeGenModule::applyReplacements() {
for (auto &I : Replacements) {
  StringRef MangledName = I.first();
  llvm::Constant *Replacement = I.second;
  llvm::GlobalValue *Entry = GetGlobalValue(MangledName);
  if (!Entry)
    continue;
  auto *OldF = cast<llvm::Function>(Entry);
  auto *NewF = dyn_cast<llvm::Function>(Replacement);
  if (!NewF) {
    if (auto *Alias = dyn_cast<llvm::GlobalAlias>(Replacement)) {
      NewF = dyn_cast<llvm::Function>(Alias->getAliasee());
    } else {
      auto *CE = cast<llvm::ConstantExpr>(Replacement);
      assert(CE->getOpcode() == llvm::Instruction::BitCast ||(static_cast <bool> (CE->getOpcode() == llvm::Instruction
::BitCast || CE->getOpcode() == llvm::Instruction::GetElementPtr
) ? void (0) : __assert_fail ("CE->getOpcode() == llvm::Instruction::BitCast || CE->getOpcode() == llvm::Instruction::GetElementPtr"
, "/build/llvm-toolchain-snapshot-13~++20210726100616+dead50d4427c/clang/lib/CodeGen/CodeGenModule.cpp"
, 286, __extension__ __PRETTY_FUNCTION__))
             CE->getOpcode() == llvm::Instruction::GetElementPtr)(static_cast <bool> (CE->getOpcode() == llvm::Instruction
::BitCast || CE->getOpcode() == llvm::Instruction::GetElementPtr
) ? void (0) : __assert_fail ("CE->getOpcode() == llvm::Instruction::BitCast || CE->getOpcode() == llvm::Instruction::GetElementPtr"
, "/build/llvm-toolchain-snapshot-13~++20210726100616+dead50d4427c/clang/lib/CodeGen/CodeGenModule.cpp"
, 286, __extension__ __PRETTY_FUNCTION__));
      NewF = dyn_cast<llvm::Function>(CE->getOperand(0));
    }
  }

  // Replace old with new, but keep the old order.
  OldF->replaceAllUsesWith(Replacement);
  if (NewF) {
    NewF->removeFromParent();
    OldF->getParent()->getFunctionList().insertAfter(OldF->getIterator(),
                                                     NewF);
  }
  OldF->eraseFromParent();
}
300}

302void CodeGenModule::addGlobalValReplacement(llvm::GlobalValue *GV, llvm::Constant *C) {
GlobalValReplacements.push_back(std::make_pair(GV, C));
304}

306void CodeGenModule::applyGlobalValReplacements() {
for (auto &I : GlobalValReplacements) {
  llvm::GlobalValue *GV = I.first;
  llvm::Constant *C = I.second;

  GV->replaceAllUsesWith(C);
  GV->eraseFromParent();
}
314}

316// This is only used in aliases that we created and we know they have a
317// linear structure.
318static const llvm::GlobalObject *getAliasedGlobal(
  const llvm::GlobalIndirectSymbol &GIS) {
llvm::SmallPtrSet<const llvm::GlobalIndirectSymbol*, 4> Visited;
const llvm::Constant *C = &GIS;
for (;;) {
  C = C->stripPointerCasts();
  if (auto *GO = dyn_cast<llvm::GlobalObject>(C))
    return GO;
  // stripPointerCasts will not walk over weak aliases.
  auto *GIS2 = dyn_cast<llvm::GlobalIndirectSymbol>(C);
  if (!GIS2)
    return nullptr;
  if (!Visited.insert(GIS2).second)
    return nullptr;
  C = GIS2->getIndirectSymbol();
}
334}

336void CodeGenModule::checkAliases() {
// Check if the constructed aliases are well formed. It is really unfortunate
// that we have to do this in CodeGen, but we only construct mangled names
// and aliases during codegen.
bool Error = false;
DiagnosticsEngine &Diags = getDiags();
for (const GlobalDecl &GD : Aliases) {
  const auto *D = cast<ValueDecl>(GD.getDecl());
  SourceLocation Location;
  bool IsIFunc = D->hasAttr<IFuncAttr>();
  if (const Attr *A = D->getDefiningAttr())
    Location = A->getLocation();
  else
    llvm_unreachable("Not an alias or ifunc?")::llvm::llvm_unreachable_internal("Not an alias or ifunc?", "/build/llvm-toolchain-snapshot-13~++20210726100616+dead50d4427c/clang/lib/CodeGen/CodeGenModule.cpp"
, 349);
  StringRef MangledName = getMangledName(GD);
  llvm::GlobalValue *Entry = GetGlobalValue(MangledName);
  auto *Alias  = cast<llvm::GlobalIndirectSymbol>(Entry);
  const llvm::GlobalValue *GV = getAliasedGlobal(*Alias);
  if (!GV) {
    Error = true;
    Diags.Report(Location, diag::err_cyclic_alias) << IsIFunc;
  } else if (GV->isDeclaration()) {
    Error = true;
    Diags.Report(Location, diag::err_alias_to_undefined)
        << IsIFunc << IsIFunc;
  } else if (IsIFunc) {
    // Check resolver function type.
    llvm::FunctionType *FTy = dyn_cast<llvm::FunctionType>(
        GV->getType()->getPointerElementType());
    assert(FTy)(static_cast <bool> (FTy) ? void (0) : __assert_fail ("FTy"
, "/build/llvm-toolchain-snapshot-13~++20210726100616+dead50d4427c/clang/lib/CodeGen/CodeGenModule.cpp"
, 365, __extension__ __PRETTY_FUNCTION__));
    if (!FTy->getReturnType()->isPointerTy())
      Diags.Report(Location, diag::err_ifunc_resolver_return);
  }

  llvm::Constant *Aliasee = Alias->getIndirectSymbol();
  llvm::GlobalValue *AliaseeGV;
  if (auto CE = dyn_cast<llvm::ConstantExpr>(Aliasee))
    AliaseeGV = cast<llvm::GlobalValue>(CE->getOperand(0));
  else
    AliaseeGV = cast<llvm::GlobalValue>(Aliasee);

  if (const SectionAttr *SA = D->getAttr<SectionAttr>()) {
    StringRef AliasSection = SA->getName();
    if (AliasSection != AliaseeGV->getSection())
      Diags.Report(SA->getLocation(), diag::warn_alias_with_section)
          << AliasSection << IsIFunc << IsIFunc;
  }

  // We have to handle alias to weak aliases in here. LLVM itself disallows
  // this since the object semantics would not match the IL one. For
  // compatibility with gcc we implement it by just pointing the alias
  // to its aliasee's aliasee. We also warn, since the user is probably
  // expecting the link to be weak.
  if (auto GA = dyn_cast<llvm::GlobalIndirectSymbol>(AliaseeGV)) {
    if (GA->isInterposable()) {
      Diags.Report(Location, diag::warn_alias_to_weak_alias)
          << GV->getName() << GA->getName() << IsIFunc;
      Aliasee = llvm::ConstantExpr::getPointerBitCastOrAddrSpaceCast(
          GA->getIndirectSymbol(), Alias->getType());
      Alias->setIndirectSymbol(Aliasee);
    }
  }
}
if (!Error)
  return;

for (const GlobalDecl &GD : Aliases) {
  StringRef MangledName = getMangledName(GD);
  llvm::GlobalValue *Entry = GetGlobalValue(MangledName);
  auto *Alias = cast<llvm::GlobalIndirectSymbol>(Entry);
  Alias->replaceAllUsesWith(llvm::UndefValue::get(Alias->getType()));
  Alias->eraseFromParent();
}
409}

411void CodeGenModule::clear() {
DeferredDeclsToEmit.clear();
if (OpenMPRuntime)
  OpenMPRuntime->clear();
415}

417void InstrProfStats::reportDiagnostics(DiagnosticsEngine &Diags,
                                     StringRef MainFile) {
if (!hasDiagnostics())
  return;
if (VisitedInMainFile > 0 && VisitedInMainFile == MissingInMainFile) {
  if (MainFile.empty())
    MainFile = "<stdin>";
  Diags.Report(diag::warn_profile_data_unprofiled) << MainFile;
} else {
  if (Mismatched > 0)
    Diags.Report(diag::warn_profile_data_out_of_date) << Visited << Mismatched;

  if (Missing > 0)
    Diags.Report(diag::warn_profile_data_missing) << Visited << Missing;
}
432}

434static void setVisibilityFromDLLStorageClass(const clang::LangOptions &LO,
                                           llvm::Module &M) {
if (!LO.VisibilityFromDLLStorageClass)
  return;

llvm::GlobalValue::VisibilityTypes DLLExportVisibility =
    CodeGenModule::GetLLVMVisibility(LO.getDLLExportVisibility());
llvm::GlobalValue::VisibilityTypes NoDLLStorageClassVisibility =
    CodeGenModule::GetLLVMVisibility(LO.getNoDLLStorageClassVisibility());
llvm::GlobalValue::VisibilityTypes ExternDeclDLLImportVisibility =
    CodeGenModule::GetLLVMVisibility(LO.getExternDeclDLLImportVisibility());
llvm::GlobalValue::VisibilityTypes ExternDeclNoDLLStorageClassVisibility =
    CodeGenModule::GetLLVMVisibility(
        LO.getExternDeclNoDLLStorageClassVisibility());

for (llvm::GlobalValue &GV : M.global_values()) {
  if (GV.hasAppendingLinkage() || GV.hasLocalLinkage())
    continue;

  // Reset DSO locality before setting the visibility. This removes
  // any effects that visibility options and annotations may have
  // had on the DSO locality. Setting the visibility will implicitly set
  // appropriate globals to DSO Local; however, this will be pessimistic
  // w.r.t. to the normal compiler IRGen.
  GV.setDSOLocal(false);

  if (GV.isDeclarationForLinker()) {
    GV.setVisibility(GV.getDLLStorageClass() ==
                             llvm::GlobalValue::DLLImportStorageClass
                         ? ExternDeclDLLImportVisibility
                         : ExternDeclNoDLLStorageClassVisibility);
  } else {
    GV.setVisibility(GV.getDLLStorageClass() ==
                             llvm::GlobalValue::DLLExportStorageClass
                         ? DLLExportVisibility
                         : NoDLLStorageClassVisibility);
  }

  GV.setDLLStorageClass(llvm::GlobalValue::DefaultStorageClass);
}
474}

476void CodeGenModule::Release() {
EmitDeferred();
EmitVTablesOpportunistically();
applyGlobalValReplacements();
applyReplacements();
checkAliases();
emitMultiVersionFunctions();
EmitCXXGlobalInitFunc();
EmitCXXGlobalCleanUpFunc();
registerGlobalDtorsWithAtExit();
EmitCXXThreadLocalInitFunc();
if (ObjCRuntime)
  if (llvm::Function *ObjCInitFunction = ObjCRuntime->ModuleInitFunction())
    AddGlobalCtor(ObjCInitFunction);
if (Context.getLangOpts().CUDA && CUDARuntime) {
  if (llvm::Function *CudaCtorFunction = CUDARuntime->finalizeModule())
    AddGlobalCtor(CudaCtorFunction);
}
if (OpenMPRuntime) {
  if (llvm::Function *OpenMPRequiresDirectiveRegFun =
          OpenMPRuntime->emitRequiresDirectiveRegFun()) {
    AddGlobalCtor(OpenMPRequiresDirectiveRegFun, 0);
  }
  OpenMPRuntime->createOffloadEntriesAndInfoMetadata();
  OpenMPRuntime->clear();
}
if (PGOReader) {
  getModule().setProfileSummary(
      PGOReader->getSummary(/* UseCS */ false).getMD(VMContext),
      llvm::ProfileSummary::PSK_Instr);
  if (PGOStats.hasDiagnostics())
    PGOStats.reportDiagnostics(getDiags(), getCodeGenOpts().MainFileName);
}
EmitCtorList(GlobalCtors, "llvm.global_ctors");
EmitCtorList(GlobalDtors, "llvm.global_dtors");
EmitGlobalAnnotations();
EmitStaticExternCAliases();
EmitDeferredUnusedCoverageMappings();
CodeGenPGO(*this).setValueProfilingFlag(getModule());
if (CoverageMapping)
  CoverageMapping->emit();
if (CodeGenOpts.SanitizeCfiCrossDso) {
  CodeGenFunction(*this).EmitCfiCheckFail();
  CodeGenFunction(*this).EmitCfiCheckStub();
}
emitAtAvailableLinkGuard();
if (Context.getTargetInfo().getTriple().isWasm() &&
    !Context.getTargetInfo().getTriple().isOSEmscripten()) {
  EmitMainVoidAlias();
}

// Emit reference of __amdgpu_device_library_preserve_asan_functions to
// preserve ASAN functions in bitcode libraries.
if (LangOpts.Sanitize.has(SanitizerKind::Address) && getTriple().isAMDGPU()) {
  auto *FT = llvm::FunctionType::get(VoidTy, {});
  auto *F = llvm::Function::Create(
      FT, llvm::GlobalValue::ExternalLinkage,
      "__amdgpu_device_library_preserve_asan_functions", &getModule());
  auto *Var = new llvm::GlobalVariable(
      getModule(), FT->getPointerTo(),
      /*isConstant=*/true, llvm::GlobalValue::WeakAnyLinkage, F,
      "__amdgpu_device_library_preserve_asan_functions_ptr", nullptr,
      llvm::GlobalVariable::NotThreadLocal);
  addCompilerUsedGlobal(Var);
}

emitLLVMUsed();
if (SanStats)
  SanStats->finish();

if (CodeGenOpts.Autolink &&
    (Context.getLangOpts().Modules || !LinkerOptionsMetadata.empty())) {
  EmitModuleLinkOptions();
}

// On ELF we pass the dependent library specifiers directly to the linker
// without manipulating them. This is in contrast to other platforms where
// they are mapped to a specific linker option by the compiler. This
// difference is a result of the greater variety of ELF linkers and the fact
// that ELF linkers tend to handle libraries in a more complicated fashion
// than on other platforms. This forces us to defer handling the dependent
// libs to the linker.
//
// CUDA/HIP device and host libraries are different. Currently there is no
// way to differentiate dependent libraries for host or device. Existing
// usage of #pragma comment(lib, *) is intended for host libraries on
// Windows. Therefore emit llvm.dependent-libraries only for host.
if (!ELFDependentLibraries.empty() && !Context.getLangOpts().CUDAIsDevice) {
  auto *NMD = getModule().getOrInsertNamedMetadata("llvm.dependent-libraries");
  for (auto *MD : ELFDependentLibraries)
    NMD->addOperand(MD);
}

// Record mregparm value now so it is visible through rest of codegen.
if (Context.getTargetInfo().getTriple().getArch() == llvm::Triple::x86)
  getModule().addModuleFlag(llvm::Module::Error, "NumRegisterParameters",
                            CodeGenOpts.NumRegisterParameters);

if (CodeGenOpts.DwarfVersion) {
  getModule().addModuleFlag(llvm::Module::Max, "Dwarf Version",
                            CodeGenOpts.DwarfVersion);
}

if (CodeGenOpts.Dwarf64)
  getModule().addModuleFlag(llvm::Module::Max, "DWARF64", 1);

if (Context.getLangOpts().SemanticInterposition)
  // Require various optimization to respect semantic interposition.
  getModule().setSemanticInterposition(1);

if (CodeGenOpts.EmitCodeView) {
  // Indicate that we want CodeView in the metadata.
  getModule().addModuleFlag(llvm::Module::Warning, "CodeView", 1);
}
if (CodeGenOpts.CodeViewGHash) {
  getModule().addModuleFlag(llvm::Module::Warning, "CodeViewGHash", 1);
}
if (CodeGenOpts.ControlFlowGuard) {
  // Function ID tables and checks for Control Flow Guard (cfguard=2).
  getModule().addModuleFlag(llvm::Module::Warning, "cfguard", 2);
} else if (CodeGenOpts.ControlFlowGuardNoChecks) {
  // Function ID tables for Control Flow Guard (cfguard=1).
  getModule().addModuleFlag(llvm::Module::Warning, "cfguard", 1);
}
if (CodeGenOpts.EHContGuard) {
  // Function ID tables for EH Continuation Guard.
  getModule().addModuleFlag(llvm::Module::Warning, "ehcontguard", 1);
}
if (CodeGenOpts.OptimizationLevel > 0 && CodeGenOpts.StrictVTablePointers) {
  // We don't support LTO with 2 with different StrictVTablePointers
  // FIXME: we could support it by stripping all the information introduced
  // by StrictVTablePointers.

  getModule().addModuleFlag(llvm::Module::Error, "StrictVTablePointers",1);

  llvm::Metadata *Ops[2] = {
            llvm::MDString::get(VMContext, "StrictVTablePointers"),
            llvm::ConstantAsMetadata::get(llvm::ConstantInt::get(
                llvm::Type::getInt32Ty(VMContext), 1))};

  getModule().addModuleFlag(llvm::Module::Require,
                            "StrictVTablePointersRequirement",
                            llvm::MDNode::get(VMContext, Ops));
}
if (getModuleDebugInfo())
  // We support a single version in the linked module. The LLVM
  // parser will drop debug info with a different version number
  // (and warn about it, too).
  getModule().addModuleFlag(llvm::Module::Warning, "Debug Info Version",
                            llvm::DEBUG_METADATA_VERSION);

// We need to record the widths of enums and wchar_t, so that we can generate
// the correct build attributes in the ARM backend. wchar_size is also used by
// TargetLibraryInfo.
uint64_t WCharWidth =
    Context.getTypeSizeInChars(Context.getWideCharType()).getQuantity();
getModule().addModuleFlag(llvm::Module::Error, "wchar_size", WCharWidth);

llvm::Triple::ArchType Arch = Context.getTargetInfo().getTriple().getArch();
if (   Arch == llvm::Triple::arm
    || Arch == llvm::Triple::armeb
    || Arch == llvm::Triple::thumb
    || Arch == llvm::Triple::thumbeb) {
  // The minimum width of an enum in bytes
  uint64_t EnumWidth = Context.getLangOpts().ShortEnums ? 1 : 4;
  getModule().addModuleFlag(llvm::Module::Error, "min_enum_size", EnumWidth);
}

if (Arch == llvm::Triple::riscv32 || Arch == llvm::Triple::riscv64) {
  StringRef ABIStr = Target.getABI();
  llvm::LLVMContext &Ctx = TheModule.getContext();
  getModule().addModuleFlag(llvm::Module::Error, "target-abi",
                            llvm::MDString::get(Ctx, ABIStr));
}

if (CodeGenOpts.SanitizeCfiCrossDso) {
  // Indicate that we want cross-DSO control flow integrity checks.
  getModule().addModuleFlag(llvm::Module::Override, "Cross-DSO CFI", 1);
}

if (CodeGenOpts.WholeProgramVTables) {
  // Indicate whether VFE was enabled for this module, so that the
  // vcall_visibility metadata added under whole program vtables is handled
  // appropriately in the optimizer.
  getModule().addModuleFlag(llvm::Module::Error, "Virtual Function Elim",
                            CodeGenOpts.VirtualFunctionElimination);
}

if (LangOpts.Sanitize.has(SanitizerKind::CFIICall)) {
  getModule().addModuleFlag(llvm::Module::Override,
                            "CFI Canonical Jump Tables",
                            CodeGenOpts.SanitizeCfiCanonicalJumpTables);
}

if (CodeGenOpts.CFProtectionReturn &&
    Target.checkCFProtectionReturnSupported(getDiags())) {
  // Indicate that we want to instrument return control flow protection.
  getModule().addModuleFlag(llvm::Module::Override, "cf-protection-return",
                            1);
}

if (CodeGenOpts.CFProtectionBranch &&
    Target.checkCFProtectionBranchSupported(getDiags())) {
  // Indicate that we want to instrument branch control flow protection.
  getModule().addModuleFlag(llvm::Module::Override, "cf-protection-branch",
                            1);
}

if (Arch == llvm::Triple::aarch64 || Arch == llvm::Triple::aarch64_32 ||
    Arch == llvm::Triple::aarch64_be) {
  getModule().addModuleFlag(llvm::Module::Error,
                            "branch-target-enforcement",
                            LangOpts.BranchTargetEnforcement);

  getModule().addModuleFlag(llvm::Module::Error, "sign-return-address",
                            LangOpts.hasSignReturnAddress());

  getModule().addModuleFlag(llvm::Module::Error, "sign-return-address-all",
                            LangOpts.isSignReturnAddressScopeAll());

  getModule().addModuleFlag(llvm::Module::Error,
                            "sign-return-address-with-bkey",
                            !LangOpts.isSignReturnAddressWithAKey());
}

if (!CodeGenOpts.MemoryProfileOutput.empty()) {
  llvm::LLVMContext &Ctx = TheModule.getContext();
  getModule().addModuleFlag(
      llvm::Module::Error, "MemProfProfileFilename",
      llvm::MDString::get(Ctx, CodeGenOpts.MemoryProfileOutput));
}

if (LangOpts.CUDAIsDevice && getTriple().isNVPTX()) {
  // Indicate whether __nvvm_reflect should be configured to flush denormal
  // floating point values to 0.  (This corresponds to its "__CUDA_FTZ"
  // property.)
  getModule().addModuleFlag(llvm::Module::Override, "nvvm-reflect-ftz",
                            CodeGenOpts.FP32DenormalMode.Output !=
                                llvm::DenormalMode::IEEE);
}

if (LangOpts.EHAsynch)
  getModule().addModuleFlag(llvm::Module::Warning, "eh-asynch", 1);

// Indicate whether this Module was compiled with -fopenmp
if (getLangOpts().OpenMP && !getLangOpts().OpenMPSimd)
  getModule().addModuleFlag(llvm::Module::Max, "openmp", LangOpts.OpenMP);
if (getLangOpts().OpenMPIsDevice)
  getModule().addModuleFlag(llvm::Module::Max, "openmp-device",
                            LangOpts.OpenMP);

// Emit OpenCL specific module metadata: OpenCL/SPIR version.
if (LangOpts.OpenCL) {
  EmitOpenCLMetadata();
  // Emit SPIR version.
  if (getTriple().isSPIR()) {
    // SPIR v2.0 s2.12 - The SPIR version used by the module is stored in the
    // opencl.spir.version named metadata.
    // C++ is backwards compatible with OpenCL v2.0.
    auto Version = LangOpts.OpenCLCPlusPlus ? 200 : LangOpts.OpenCLVersion;
    llvm::Metadata *SPIRVerElts[] = {
        llvm::ConstantAsMetadata::get(llvm::ConstantInt::get(
            Int32Ty, Version / 100)),
        llvm::ConstantAsMetadata::get(llvm::ConstantInt::get(
            Int32Ty, (Version / 100 > 1) ? 0 : 2))};
    llvm::NamedMDNode *SPIRVerMD =
        TheModule.getOrInsertNamedMetadata("opencl.spir.version");
    llvm::LLVMContext &Ctx = TheModule.getContext();
    SPIRVerMD->addOperand(llvm::MDNode::get(Ctx, SPIRVerElts));
  }
}

if (uint32_t PLevel = Context.getLangOpts().PICLevel) {
  assert(PLevel < 3 && "Invalid PIC Level")(static_cast <bool> (PLevel < 3 && "Invalid PIC Level"
) ? void (0) : __assert_fail ("PLevel < 3 && \"Invalid PIC Level\""
, "/build/llvm-toolchain-snapshot-13~++20210726100616+dead50d4427c/clang/lib/CodeGen/CodeGenModule.cpp"
, 749, __extension__ __PRETTY_FUNCTION__));
  getModule().setPICLevel(static_cast<llvm::PICLevel::Level>(PLevel));
  if (Context.getLangOpts().PIE)
    getModule().setPIELevel(static_cast<llvm::PIELevel::Level>(PLevel));
}

if (getCodeGenOpts().CodeModel.size() > 0) {
  unsigned CM = llvm::StringSwitch<unsigned>(getCodeGenOpts().CodeModel)
                .Case("tiny", llvm::CodeModel::Tiny)
                .Case("small", llvm::CodeModel::Small)
                .Case("kernel", llvm::CodeModel::Kernel)
                .Case("medium", llvm::CodeModel::Medium)
                .Case("large", llvm::CodeModel::Large)
                .Default(~0u);
  if (CM != ~0u) {
    llvm::CodeModel::Model codeModel = static_cast<llvm::CodeModel::Model>(CM);
    getModule().setCodeModel(codeModel);
  }
}

if (CodeGenOpts.NoPLT)
  getModule().setRtLibUseGOT();
if (CodeGenOpts.UnwindTables)
  getModule().setUwtable();

switch (CodeGenOpts.getFramePointer()) {
case CodeGenOptions::FramePointerKind::None:
  // 0 ("none") is the default.
  break;
case CodeGenOptions::FramePointerKind::NonLeaf:
  getModule().setFramePointer(llvm::FramePointerKind::NonLeaf);
  break;
case CodeGenOptions::FramePointerKind::All:
  getModule().setFramePointer(llvm::FramePointerKind::All);
  break;
}

SimplifyPersonality();

if (getCodeGenOpts().EmitDeclMetadata)
  EmitDeclMetadata();

if (getCodeGenOpts().EmitGcovArcs || getCodeGenOpts().EmitGcovNotes)
  EmitCoverageFile();

if (CGDebugInfo *DI = getModuleDebugInfo())
  DI->finalize();

if (getCodeGenOpts().EmitVersionIdentMetadata)
  EmitVersionIdentMetadata();

if (!getCodeGenOpts().RecordCommandLine.empty())
  EmitCommandLineMetadata();

if (!getCodeGenOpts().StackProtectorGuard.empty())
  getModule().setStackProtectorGuard(getCodeGenOpts().StackProtectorGuard);
if (!getCodeGenOpts().StackProtectorGuardReg.empty())
  getModule().setStackProtectorGuardReg(
      getCodeGenOpts().StackProtectorGuardReg);
if (getCodeGenOpts().StackProtectorGuardOffset != INT_MAX2147483647)
  getModule().setStackProtectorGuardOffset(
      getCodeGenOpts().StackProtectorGuardOffset);
if (getCodeGenOpts().StackAlignment)
  getModule().setOverrideStackAlignment(getCodeGenOpts().StackAlignment);

getTargetCodeGenInfo().emitTargetMetadata(*this, MangledDeclNames);

EmitBackendOptionsMetadata(getCodeGenOpts());

// Set visibility from DLL storage class
// We do this at the end of LLVM IR generation; after any operation
// that might affect the DLL storage class or the visibility, and
// before anything that might act on these.
setVisibilityFromDLLStorageClass(LangOpts, getModule());
823}

825void CodeGenModule::EmitOpenCLMetadata() {
// SPIR v2.0 s2.13 - The OpenCL version used by the module is stored in the
// opencl.ocl.version named metadata node.
// C++ is backwards compatible with OpenCL v2.0.
// FIXME: We might need to add CXX version at some point too?
auto Version = LangOpts.OpenCLCPlusPlus ? 200 : LangOpts.OpenCLVersion;
llvm::Metadata *OCLVerElts[] = {
    llvm::ConstantAsMetadata::get(llvm::ConstantInt::get(
        Int32Ty, Version / 100)),
    llvm::ConstantAsMetadata::get(llvm::ConstantInt::get(
        Int32Ty, (Version % 100) / 10))};
llvm::NamedMDNode *OCLVerMD =
    TheModule.getOrInsertNamedMetadata("opencl.ocl.version");
llvm::LLVMContext &Ctx = TheModule.getContext();
OCLVerMD->addOperand(llvm::MDNode::get(Ctx, OCLVerElts));
840}

842void CodeGenModule::EmitBackendOptionsMetadata(
  const CodeGenOptions CodeGenOpts) {
switch (getTriple().getArch()) {
default:
  break;
case llvm::Triple::riscv32:
case llvm::Triple::riscv64:
  getModule().addModuleFlag(llvm::Module::Error, "SmallDataLimit",
                            CodeGenOpts.SmallDataLimit);
  break;
}
853}

855void CodeGenModule::UpdateCompletedType(const TagDecl *TD) {
// Make sure that this type is translated.
Types.UpdateCompletedType(TD);
858}

860void CodeGenModule::RefreshTypeCacheForClass(const CXXRecordDecl *RD) {
// Make sure that this type is translated.
Types.RefreshTypeCacheForClass(RD);
863}

865llvm::MDNode *CodeGenModule::getTBAATypeInfo(QualType QTy) {
if (!TBAA)
  return nullptr;
return TBAA->getTypeInfo(QTy);
869}

871TBAAAccessInfo CodeGenModule::getTBAAAccessInfo(QualType AccessType) {
if (!TBAA)
  return TBAAAccessInfo();
if (getLangOpts().CUDAIsDevice) {
  // As CUDA builtin surface/texture types are replaced, skip generating TBAA
  // access info.
  if (AccessType->isCUDADeviceBuiltinSurfaceType()) {
    if (getTargetCodeGenInfo().getCUDADeviceBuiltinSurfaceDeviceType() !=
        nullptr)
      return TBAAAccessInfo();
  } else if (AccessType->isCUDADeviceBuiltinTextureType()) {
    if (getTargetCodeGenInfo().getCUDADeviceBuiltinTextureDeviceType() !=
        nullptr)
      return TBAAAccessInfo();
  }
}
return TBAA->getAccessInfo(AccessType);
888}

890TBAAAccessInfo
891CodeGenModule::getTBAAVTablePtrAccessInfo(llvm::Type *VTablePtrType) {
if (!TBAA)
  return TBAAAccessInfo();
return TBAA->getVTablePtrAccessInfo(VTablePtrType);
895}

897llvm::MDNode *CodeGenModule::getTBAAStructInfo(QualType QTy) {
if (!TBAA)
  return nullptr;
return TBAA->getTBAAStructInfo(QTy);
901}

903llvm::MDNode *CodeGenModule::getTBAABaseTypeInfo(QualType QTy) {
if (!TBAA)
  return nullptr;
return TBAA->getBaseTypeInfo(QTy);
907}

909llvm::MDNode *CodeGenModule::getTBAAAccessTagInfo(TBAAAccessInfo Info) {
if (!TBAA)
  return nullptr;
return TBAA->getAccessTagInfo(Info);
913}

915TBAAAccessInfo CodeGenModule::mergeTBAAInfoForCast(TBAAAccessInfo SourceInfo,
                                                 TBAAAccessInfo TargetInfo) {
if (!TBAA)
  return TBAAAccessInfo();
return TBAA->mergeTBAAInfoForCast(SourceInfo, TargetInfo);
920}

922TBAAAccessInfo
923CodeGenModule::mergeTBAAInfoForConditionalOperator(TBAAAccessInfo InfoA,
                                                 TBAAAccessInfo InfoB) {
if (!TBAA)
  return TBAAAccessInfo();
return TBAA->mergeTBAAInfoForConditionalOperator(InfoA, InfoB);
928}

930TBAAAccessInfo
931CodeGenModule::mergeTBAAInfoForMemoryTransfer(TBAAAccessInfo DestInfo,
                                            TBAAAccessInfo SrcInfo) {
if (!TBAA)
  return TBAAAccessInfo();
return TBAA->mergeTBAAInfoForConditionalOperator(DestInfo, SrcInfo);
936}

938void CodeGenModule::DecorateInstructionWithTBAA(llvm::Instruction *Inst,
                                              TBAAAccessInfo TBAAInfo) {
if (llvm::MDNode *Tag = getTBAAAccessTagInfo(TBAAInfo))
  Inst->setMetadata(llvm::LLVMContext::MD_tbaa, Tag);
942}

944void CodeGenModule::DecorateInstructionWithInvariantGroup(
  llvm::Instruction *I, const CXXRecordDecl *RD) {
I->setMetadata(llvm::LLVMContext::MD_invariant_group,
               llvm::MDNode::get(getLLVMContext(), {}));
948}

950void CodeGenModule::Error(SourceLocation loc, StringRef message) {
unsigned diagID = getDiags().getCustomDiagID(DiagnosticsEngine::Error, "%0");
getDiags().Report(Context.getFullLoc(loc), diagID) << message;
953}

955/// ErrorUnsupported - Print out an error that codegen doesn't support the
956/// specified stmt yet.
957void CodeGenModule::ErrorUnsupported(const Stmt *S, const char *Type) {
unsigned DiagID = getDiags().getCustomDiagID(DiagnosticsEngine::Error,
                                             "cannot compile this %0 yet");
std::string Msg = Type;
getDiags().Report(Context.getFullLoc(S->getBeginLoc()), DiagID)
    << Msg << S->getSourceRange();
963}

965/// ErrorUnsupported - Print out an error that codegen doesn't support the
966/// specified decl yet.
967void CodeGenModule::ErrorUnsupported(const Decl *D, const char *Type) {
unsigned DiagID = getDiags().getCustomDiagID(DiagnosticsEngine::Error,
                                             "cannot compile this %0 yet");
std::string Msg = Type;
getDiags().Report(Context.getFullLoc(D->getLocation()), DiagID) << Msg;
972}

974llvm::ConstantInt *CodeGenModule::getSize(CharUnits size) {
return llvm::ConstantInt::get(SizeTy, size.getQuantity());
976}

978void CodeGenModule::setGlobalVisibility(llvm::GlobalValue *GV,
                                      const NamedDecl *D) const {
if (GV->hasDLLImportStorageClass())
  return;
// Internal definitions always have default visibility.
if (GV->hasLocalLinkage()) {
  GV->setVisibility(llvm::GlobalValue::DefaultVisibility);
  return;
}
if (!D)
  return;
// Set visibility for definitions, and for declarations if requested globally
// or set explicitly.
LinkageInfo LV = D->getLinkageAndVisibility();
if (LV.isVisibilityExplicit() || getLangOpts().SetVisibilityForExternDecls ||
    !GV->isDeclarationForLinker())
  GV->setVisibility(GetLLVMVisibility(LV.getVisibility()));
995}

997static bool shouldAssumeDSOLocal(const CodeGenModule &CGM,
                               llvm::GlobalValue *GV) {
if (GV->hasLocalLinkage())
  return true;

if (!GV->hasDefaultVisibility() && !GV->hasExternalWeakLinkage())
  return true;

// DLLImport explicitly marks the GV as external.
if (GV->hasDLLImportStorageClass())
  return false;

const llvm::Triple &TT = CGM.getTriple();
if (TT.isWindowsGNUEnvironment()) {
  // In MinGW, variables without DLLImport can still be automatically
  // imported from a DLL by the linker; don't mark variables that
  // potentially could come from another DLL as DSO local.

  // With EmulatedTLS, TLS variables can be autoimported from other DLLs
  // (and this actually happens in the public interface of libstdc++), so
  // such variables can't be marked as DSO local. (Native TLS variables
  // can't be dllimported at all, though.)
  if (GV->isDeclarationForLinker() && isa<llvm::GlobalVariable>(GV) &&
      (!GV->isThreadLocal() || CGM.getCodeGenOpts().EmulatedTLS))
    return false;
}

// On COFF, don't mark 'extern_weak' symbols as DSO local. If these symbols
// remain unresolved in the link, they can be resolved to zero, which is
// outside the current DSO.
if (TT.isOSBinFormatCOFF() && GV->hasExternalWeakLinkage())
  return false;

// Every other GV is local on COFF.
// Make an exception for windows OS in the triple: Some firmware builds use
// *-win32-macho triples. This (accidentally?) produced windows relocations
// without GOT tables in older clang versions; Keep this behaviour.
// FIXME: even thread local variables?
if (TT.isOSBinFormatCOFF() || (TT.isOSWindows() && TT.isOSBinFormatMachO()))
  return true;

// Only handle COFF and ELF for now.
if (!TT.isOSBinFormatELF())
  return false;

// If this is not an executable, don't assume anything is local.
const auto &CGOpts = CGM.getCodeGenOpts();
llvm::Reloc::Model RM = CGOpts.RelocationModel;
const auto &LOpts = CGM.getLangOpts();
if (RM != llvm::Reloc::Static && !LOpts.PIE) {
  // On ELF, if -fno-semantic-interposition is specified and the target
  // supports local aliases, there will be neither CC1
  // -fsemantic-interposition nor -fhalf-no-semantic-interposition. Set
  // dso_local on the function if using a local alias is preferable (can avoid
  // PLT indirection).
  if (!(isa<llvm::Function>(GV) && GV->canBenefitFromLocalAlias()))
    return false;
  return !(CGM.getLangOpts().SemanticInterposition ||
           CGM.getLangOpts().HalfNoSemanticInterposition);
}

// A definition cannot be preempted from an executable.
if (!GV->isDeclarationForLinker())
  return true;

// Most PIC code sequences that assume that a symbol is local cannot produce a
// 0 if it turns out the symbol is undefined. While this is ABI and relocation
// depended, it seems worth it to handle it here.
if (RM == llvm::Reloc::PIC_ && GV->hasExternalWeakLinkage())
  return false;

// PowerPC64 prefers TOC indirection to avoid copy relocations.
if (TT.isPPC64())
  return false;

if (CGOpts.DirectAccessExternalData) {
  // If -fdirect-access-external-data (default for -fno-pic), set dso_local
  // for non-thread-local variables. If the symbol is not defined in the
  // executable, a copy relocation will be needed at link time. dso_local is
  // excluded for thread-local variables because they generally don't support
  // copy relocations.
  if (auto *Var = dyn_cast<llvm::GlobalVariable>(GV))
    if (!Var->isThreadLocal())
      return true;

  // -fno-pic sets dso_local on a function declaration to allow direct
  // accesses when taking its address (similar to a data symbol). If the
  // function is not defined in the executable, a canonical PLT entry will be
  // needed at link time. -fno-direct-access-external-data can avoid the
  // canonical PLT entry. We don't generalize this condition to -fpie/-fpic as
  // it could just cause trouble without providing perceptible benefits.
  if (isa<llvm::Function>(GV) && !CGOpts.NoPLT && RM == llvm::Reloc::Static)
    return true;
}

// If we can use copy relocations we can assume it is local.

// Otherwise don't assume it is local.
return false;
1096}

1098void CodeGenModule::setDSOLocal(llvm::GlobalValue *GV) const {
GV->setDSOLocal(shouldAssumeDSOLocal(*this, GV));
1100}

1102void CodeGenModule::setDLLImportDLLExport(llvm::GlobalValue *GV,
                                        GlobalDecl GD) const {
const auto *D = dyn_cast<NamedDecl>(GD.getDecl());
// C++ destructors have a few C++ ABI specific special cases.
if (const auto *Dtor = dyn_cast_or_null<CXXDestructorDecl>(D)) {
  getCXXABI().setCXXDestructorDLLStorage(GV, Dtor, GD.getDtorType());
  return;
}
setDLLImportDLLExport(GV, D);
1111}

1113void CodeGenModule::setDLLImportDLLExport(llvm::GlobalValue *GV,
                                        const NamedDecl *D) const {
if (D && D->isExternallyVisible()) {
  if (D->hasAttr<DLLImportAttr>())
    GV->setDLLStorageClass(llvm::GlobalVariable::DLLImportStorageClass);
  else if (D->hasAttr<DLLExportAttr>() && !GV->isDeclarationForLinker())
    GV->setDLLStorageClass(llvm::GlobalVariable::DLLExportStorageClass);
}
1121}

1123void CodeGenModule::setGVProperties(llvm::GlobalValue *GV,
                                  GlobalDecl GD) const {
setDLLImportDLLExport(GV, GD);
setGVPropertiesAux(GV, dyn_cast<NamedDecl>(GD.getDecl()));
1127}

1129void CodeGenModule::setGVProperties(llvm::GlobalValue *GV,
                                  const NamedDecl *D) const {
setDLLImportDLLExport(GV, D);
setGVPropertiesAux(GV, D);
1133}

1135void CodeGenModule::setGVPropertiesAux(llvm::GlobalValue *GV,
                                     const NamedDecl *D) const {
setGlobalVisibility(GV, D);
setDSOLocal(GV);
GV->setPartition(CodeGenOpts.SymbolPartition);
1140}

1142static llvm::GlobalVariable::ThreadLocalMode GetLLVMTLSModel(StringRef S) {
return llvm::StringSwitch<llvm::GlobalVariable::ThreadLocalMode>(S)
    .Case("global-dynamic", llvm::GlobalVariable::GeneralDynamicTLSModel)
    .Case("local-dynamic", llvm::GlobalVariable::LocalDynamicTLSModel)
    .Case("initial-exec", llvm::GlobalVariable::InitialExecTLSModel)
    .Case("local-exec", llvm::GlobalVariable::LocalExecTLSModel);
1148}

1150llvm::GlobalVariable::ThreadLocalMode
1151CodeGenModule::GetDefaultLLVMTLSModel() const {
switch (CodeGenOpts.getDefaultTLSModel()) {
case CodeGenOptions::GeneralDynamicTLSModel:
  return llvm::GlobalVariable::GeneralDynamicTLSModel;
case CodeGenOptions::LocalDynamicTLSModel:
  return llvm::GlobalVariable::LocalDynamicTLSModel;
case CodeGenOptions::InitialExecTLSModel:
  return llvm::GlobalVariable::InitialExecTLSModel;
case CodeGenOptions::LocalExecTLSModel:
  return llvm::GlobalVariable::LocalExecTLSModel;
}
llvm_unreachable("Invalid TLS model!")::llvm::llvm_unreachable_internal("Invalid TLS model!", "/build/llvm-toolchain-snapshot-13~++20210726100616+dead50d4427c/clang/lib/CodeGen/CodeGenModule.cpp"
, 1162);
1163}

1165void CodeGenModule::setTLSMode(llvm::GlobalValue *GV, const VarDecl &D) const {
assert(D.getTLSKind() && "setting TLS mode on non-TLS var!")(static_cast <bool> (D.getTLSKind() && "setting TLS mode on non-TLS var!"
) ? void (0) : __assert_fail ("D.getTLSKind() && \"setting TLS mode on non-TLS var!\""
, "/build/llvm-toolchain-snapshot-13~++20210726100616+dead50d4427c/clang/lib/CodeGen/CodeGenModule.cpp"
, 1166, __extension__ __PRETTY_FUNCTION__));

llvm::GlobalValue::ThreadLocalMode TLM;
TLM = GetDefaultLLVMTLSModel();

// Override the TLS model if it is explicitly specified.
if (const TLSModelAttr *Attr = D.getAttr<TLSModelAttr>()) {
  TLM = GetLLVMTLSModel(Attr->getModel());
}

GV->setThreadLocalMode(TLM);
1177}

1179static std::string getCPUSpecificMangling(const CodeGenModule &CGM,
                                        StringRef Name) {
const TargetInfo &Target = CGM.getTarget();
return (Twine('.') + Twine(Target.CPUSpecificManglingCharacter(Name))).str();
1183}

1185static void AppendCPUSpecificCPUDispatchMangling(const CodeGenModule &CGM,
                                               const CPUSpecificAttr *Attr,
                                               unsigned CPUIndex,
                                               raw_ostream &Out) {
// cpu_specific gets the current name, dispatch gets the resolver if IFunc is
// supported.
if (Attr)
  Out << getCPUSpecificMangling(CGM, Attr->getCPUName(CPUIndex)->getName());
else if (CGM.getTarget().supportsIFunc())
  Out << ".resolver";
1195}

1197static void AppendTargetMangling(const CodeGenModule &CGM,
                               const TargetAttr *Attr, raw_ostream &Out) {
if (Attr->isDefaultVersion())
  return;

Out << '.';
const TargetInfo &Target = CGM.getTarget();
ParsedTargetAttr Info =
    Attr->parse([&Target](StringRef LHS, StringRef RHS) {
      // Multiversioning doesn't allow "no-${feature}", so we can
      // only have "+" prefixes here.
      assert(LHS.startswith("+") && RHS.startswith("+") &&(static_cast <bool> (LHS.startswith("+") && RHS
.startswith("+") && "Features should always have a prefix."
) ? void (0) : __assert_fail ("LHS.startswith(\"+\") && RHS.startswith(\"+\") && \"Features should always have a prefix.\""
, "/build/llvm-toolchain-snapshot-13~++20210726100616+dead50d4427c/clang/lib/CodeGen/CodeGenModule.cpp"
, 1209, __extension__ __PRETTY_FUNCTION__))
             "Features should always have a prefix.")(static_cast <bool> (LHS.startswith("+") && RHS
.startswith("+") && "Features should always have a prefix."
) ? void (0) : __assert_fail ("LHS.startswith(\"+\") && RHS.startswith(\"+\") && \"Features should always have a prefix.\""
, "/build/llvm-toolchain-snapshot-13~++20210726100616+dead50d4427c/clang/lib/CodeGen/CodeGenModule.cpp"
, 1209, __extension__ __PRETTY_FUNCTION__));
      return Target.multiVersionSortPriority(LHS.substr(1)) >
             Target.multiVersionSortPriority(RHS.substr(1));
    });

bool IsFirst = true;

if (!Info.Architecture.empty()) {
  IsFirst = false;
  Out << "arch_" << Info.Architecture;
}

for (StringRef Feat : Info.Features) {
  if (!IsFirst)
    Out << '_';
  IsFirst = false;
  Out << Feat.substr(1);
}
1227}

1229// Returns true if GD is a function decl with internal linkage and
1230// needs a unique suffix after the mangled name.
1231static bool isUniqueInternalLinkageDecl(GlobalDecl GD,
                                      CodeGenModule &CGM) {
const Decl *D = GD.getDecl();
return !CGM.getModuleNameHash().empty() && isa<FunctionDecl>(D) &&
       (CGM.getFunctionLinkage(GD) == llvm::GlobalValue::InternalLinkage);
1236}

1238static std::string getMangledNameImpl(CodeGenModule &CGM, GlobalDecl GD,
                                    const NamedDecl *ND,
                                    bool OmitMultiVersionMangling = false) {
SmallString<256> Buffer;
llvm::raw_svector_ostream Out(Buffer);
MangleContext &MC = CGM.getCXXABI().getMangleContext();
if (!CGM.getModuleNameHash().empty())
  MC.needsUniqueInternalLinkageNames();
bool ShouldMangle = MC.shouldMangleDeclName(ND);
if (ShouldMangle)
  MC.mangleName(GD.getWithDecl(ND), Out);
else {
  IdentifierInfo *II = ND->getIdentifier();
  assert(II && "Attempt to mangle unnamed decl.")(static_cast <bool> (II && "Attempt to mangle unnamed decl."
) ? void (0) : __assert_fail ("II && \"Attempt to mangle unnamed decl.\""
, "/build/llvm-toolchain-snapshot-13~++20210726100616+dead50d4427c/clang/lib/CodeGen/CodeGenModule.cpp"
, 1251, __extension__ __PRETTY_FUNCTION__));
  const auto *FD = dyn_cast<FunctionDecl>(ND);

  if (FD &&
      FD->getType()->castAs<FunctionType>()->getCallConv() == CC_X86RegCall) {
    Out << "__regcall3__" << II->getName();
  } else if (FD && FD->hasAttr<CUDAGlobalAttr>() &&
             GD.getKernelReferenceKind() == KernelReferenceKind::Stub) {
    Out << "__device_stub__" << II->getName();
  } else {
    Out << II->getName();
  }
}

// Check if the module name hash should be appended for internal linkage
// symbols.   This should come before multi-version target suffixes are
// appended. This is to keep the name and module hash suffix of the
// internal linkage function together.  The unique suffix should only be
// added when name mangling is done to make sure that the final name can
// be properly demangled.  For example, for C functions without prototypes,
// name mangling is not done and the unique suffix should not be appeneded
// then.
if (ShouldMangle && isUniqueInternalLinkageDecl(GD, CGM)) {
  assert(CGM.getCodeGenOpts().UniqueInternalLinkageNames &&(static_cast <bool> (CGM.getCodeGenOpts().UniqueInternalLinkageNames
 && "Hash computed when not explicitly requested") ? void
 (0) : __assert_fail ("CGM.getCodeGenOpts().UniqueInternalLinkageNames && \"Hash computed when not explicitly requested\""
, "/build/llvm-toolchain-snapshot-13~++20210726100616+dead50d4427c/clang/lib/CodeGen/CodeGenModule.cpp"
, 1275, __extension__ __PRETTY_FUNCTION__))
         "Hash computed when not explicitly requested")(static_cast <bool> (CGM.getCodeGenOpts().UniqueInternalLinkageNames
 && "Hash computed when not explicitly requested") ? void
 (0) : __assert_fail ("CGM.getCodeGenOpts().UniqueInternalLinkageNames && \"Hash computed when not explicitly requested\""
, "/build/llvm-toolchain-snapshot-13~++20210726100616+dead50d4427c/clang/lib/CodeGen/CodeGenModule.cpp"
, 1275, __extension__ __PRETTY_FUNCTION__));
  Out << CGM.getModuleNameHash();
}

if (const auto *FD = dyn_cast<FunctionDecl>(ND))
  if (FD->isMultiVersion() && !OmitMultiVersionMangling) {
    switch (FD->getMultiVersionKind()) {
    case MultiVersionKind::CPUDispatch:
    case MultiVersionKind::CPUSpecific:
      AppendCPUSpecificCPUDispatchMangling(CGM,
                                           FD->getAttr<CPUSpecificAttr>(),
                                           GD.getMultiVersionIndex(), Out);
      break;
    case MultiVersionKind::Target:
      AppendTargetMangling(CGM, FD->getAttr<TargetAttr>(), Out);
      break;
    case MultiVersionKind::None:
      llvm_unreachable("None multiversion type isn't valid here")::llvm::llvm_unreachable_internal("None multiversion type isn't valid here"
, "/build/llvm-toolchain-snapshot-13~++20210726100616+dead50d4427c/clang/lib/CodeGen/CodeGenModule.cpp"
, 1292);
    }
  }

// Make unique name for device side static file-scope variable for HIP.
if (CGM.getContext().shouldExternalizeStaticVar(ND) &&
    CGM.getLangOpts().GPURelocatableDeviceCode &&
    CGM.getLangOpts().CUDAIsDevice && !CGM.getLangOpts().CUID.empty())
  CGM.printPostfixForExternalizedStaticVar(Out);
return std::string(Out.str());
1302}

1304void CodeGenModule::UpdateMultiVersionNames(GlobalDecl GD,
                                          const FunctionDecl *FD) {
if (!FD->isMultiVersion())
  return;

// Get the name of what this would be without the 'target' attribute.  This
// allows us to lookup the version that was emitted when this wasn't a
// multiversion function.
std::string NonTargetName =
    getMangledNameImpl(*this, GD, FD, /*OmitMultiVersionMangling=*/true);
GlobalDecl OtherGD;
if (lookupRepresentativeDecl(NonTargetName, OtherGD)) {
  assert(OtherGD.getCanonicalDecl()(static_cast <bool> (OtherGD.getCanonicalDecl() .getDecl
() ->getAsFunction() ->isMultiVersion() && "Other GD should now be a multiversioned function"
) ? void (0) : __assert_fail ("OtherGD.getCanonicalDecl() .getDecl() ->getAsFunction() ->isMultiVersion() && \"Other GD should now be a multiversioned function\""
, "/build/llvm-toolchain-snapshot-13~++20210726100616+dead50d4427c/clang/lib/CodeGen/CodeGenModule.cpp"
, 1320, __extension__ __PRETTY_FUNCTION__))
             .getDecl()(static_cast <bool> (OtherGD.getCanonicalDecl() .getDecl
() ->getAsFunction() ->isMultiVersion() && "Other GD should now be a multiversioned function"
) ? void (0) : __assert_fail ("OtherGD.getCanonicalDecl() .getDecl() ->getAsFunction() ->isMultiVersion() && \"Other GD should now be a multiversioned function\""
, "/build/llvm-toolchain-snapshot-13~++20210726100616+dead50d4427c/clang/lib/CodeGen/CodeGenModule.cpp"
, 1320, __extension__ __PRETTY_FUNCTION__))
             ->getAsFunction()(static_cast <bool> (OtherGD.getCanonicalDecl() .getDecl
() ->getAsFunction() ->isMultiVersion() && "Other GD should now be a multiversioned function"
) ? void (0) : __assert_fail ("OtherGD.getCanonicalDecl() .getDecl() ->getAsFunction() ->isMultiVersion() && \"Other GD should now be a multiversioned function\""
, "/build/llvm-toolchain-snapshot-13~++20210726100616+dead50d4427c/clang/lib/CodeGen/CodeGenModule.cpp"
, 1320, __extension__ __PRETTY_FUNCTION__))
             ->isMultiVersion() &&(static_cast <bool> (OtherGD.getCanonicalDecl() .getDecl
() ->getAsFunction() ->isMultiVersion() && "Other GD should now be a multiversioned function"
) ? void (0) : __assert_fail ("OtherGD.getCanonicalDecl() .getDecl() ->getAsFunction() ->isMultiVersion() && \"Other GD should now be a multiversioned function\""
, "/build/llvm-toolchain-snapshot-13~++20210726100616+dead50d4427c/clang/lib/CodeGen/CodeGenModule.cpp"
, 1320, __extension__ __PRETTY_FUNCTION__))
         "Other GD should now be a multiversioned function")(static_cast <bool> (OtherGD.getCanonicalDecl() .getDecl
() ->getAsFunction() ->isMultiVersion() && "Other GD should now be a multiversioned function"
) ? void (0) : __assert_fail ("OtherGD.getCanonicalDecl() .getDecl() ->getAsFunction() ->isMultiVersion() && \"Other GD should now be a multiversioned function\""
, "/build/llvm-toolchain-snapshot-13~++20210726100616+dead50d4427c/clang/lib/CodeGen/CodeGenModule.cpp"
, 1320, __extension__ __PRETTY_FUNCTION__));
  // OtherFD is the version of this function that was mangled BEFORE
  // becoming a MultiVersion function.  It potentially needs to be updated.
  const FunctionDecl *OtherFD = OtherGD.getCanonicalDecl()
                                    .getDecl()
                                    ->getAsFunction()
                                    ->getMostRecentDecl();
  std::string OtherName = getMangledNameImpl(*this, OtherGD, OtherFD);
  // This is so that if the initial version was already the 'default'
  // version, we don't try to update it.
  if (OtherName != NonTargetName) {
    // Remove instead of erase, since others may have stored the StringRef
    // to this.
    const auto ExistingRecord = Manglings.find(NonTargetName);
    if (ExistingRecord != std::end(Manglings))
      Manglings.remove(&(*ExistingRecord));
    auto Result = Manglings.insert(std::make_pair(OtherName, OtherGD));
    MangledDeclNames[OtherGD.getCanonicalDecl()] = Result.first->first();
    if (llvm::GlobalValue *Entry = GetGlobalValue(NonTargetName))
      Entry->setName(OtherName);
  }
}
1342}

1344StringRef CodeGenModule::getMangledName(GlobalDecl GD) {
GlobalDecl CanonicalGD = GD.getCanonicalDecl();

// Some ABIs don't have constructor variants.  Make sure that base and
// complete constructors get mangled the same.
if (const auto *CD = dyn_cast<CXXConstructorDecl>(CanonicalGD.getDecl())) {
  if (!getTarget().getCXXABI().hasConstructorVariants()) {
    CXXCtorType OrigCtorType = GD.getCtorType();
    assert(OrigCtorType == Ctor_Base || OrigCtorType == Ctor_Complete)(static_cast <bool> (OrigCtorType == Ctor_Base || OrigCtorType
 == Ctor_Complete) ? void (0) : __assert_fail ("OrigCtorType == Ctor_Base || OrigCtorType == Ctor_Complete"
, "/build/llvm-toolchain-snapshot-13~++20210726100616+dead50d4427c/clang/lib/CodeGen/CodeGenModule.cpp"
, 1352, __extension__ __PRETTY_FUNCTION__));
    if (OrigCtorType == Ctor_Base)
      CanonicalGD = GlobalDecl(CD, Ctor_Complete);
  }
}

// In CUDA/HIP device compilation with -fgpu-rdc, the mangled name of a
// static device variable depends on whether the variable is referenced by
// a host or device host function. Therefore the mangled name cannot be
// cached.
if (!LangOpts.CUDAIsDevice ||
    !getContext().mayExternalizeStaticVar(GD.getDecl())) {
  auto FoundName = MangledDeclNames.find(CanonicalGD);
  if (FoundName != MangledDeclNames.end())
    return FoundName->second;
}

// Keep the first result in the case of a mangling collision.
const auto *ND = cast<NamedDecl>(GD.getDecl());
std::string MangledName = getMangledNameImpl(*this, GD, ND);

// Ensure either we have different ABIs between host and device compilations,
// says host compilation following MSVC ABI but device compilation follows
// Itanium C++ ABI or, if they follow the same ABI, kernel names after
// mangling should be the same after name stubbing. The later checking is
// very important as the device kernel name being mangled in host-compilation
// is used to resolve the device binaries to be executed. Inconsistent naming
// result in undefined behavior. Even though we cannot check that naming
// directly between host- and device-compilations, the host- and
// device-mangling in host compilation could help catching certain ones.
assert(!isa<FunctionDecl>(ND) || !ND->hasAttr<CUDAGlobalAttr>() ||(static_cast <bool> (!isa<FunctionDecl>(ND) || !ND
->hasAttr<CUDAGlobalAttr>() || getLangOpts().CUDAIsDevice
 || (getContext().getAuxTargetInfo() && (getContext()
.getAuxTargetInfo()->getCXXABI() != getContext().getTargetInfo
().getCXXABI())) || getCUDARuntime().getDeviceSideName(ND) ==
 getMangledNameImpl( *this, GD.getWithKernelReferenceKind(KernelReferenceKind
::Kernel), ND)) ? void (0) : __assert_fail ("!isa<FunctionDecl>(ND) || !ND->hasAttr<CUDAGlobalAttr>() || getLangOpts().CUDAIsDevice || (getContext().getAuxTargetInfo() && (getContext().getAuxTargetInfo()->getCXXABI() != getContext().getTargetInfo().getCXXABI())) || getCUDARuntime().getDeviceSideName(ND) == getMangledNameImpl( *this, GD.getWithKernelReferenceKind(KernelReferenceKind::Kernel), ND)"
, "/build/llvm-toolchain-snapshot-13~++20210726100616+dead50d4427c/clang/lib/CodeGen/CodeGenModule.cpp"
, 1391, __extension__ __PRETTY_FUNCTION__))
       getLangOpts().CUDAIsDevice ||(static_cast <bool> (!isa<FunctionDecl>(ND) || !ND
->hasAttr<CUDAGlobalAttr>() || getLangOpts().CUDAIsDevice
 || (getContext().getAuxTargetInfo() && (getContext()
.getAuxTargetInfo()->getCXXABI() != getContext().getTargetInfo
().getCXXABI())) || getCUDARuntime().getDeviceSideName(ND) ==
 getMangledNameImpl( *this, GD.getWithKernelReferenceKind(KernelReferenceKind
::Kernel), ND)) ? void (0) : __assert_fail ("!isa<FunctionDecl>(ND) || !ND->hasAttr<CUDAGlobalAttr>() || getLangOpts().CUDAIsDevice || (getContext().getAuxTargetInfo() && (getContext().getAuxTargetInfo()->getCXXABI() != getContext().getTargetInfo().getCXXABI())) || getCUDARuntime().getDeviceSideName(ND) == getMangledNameImpl( *this, GD.getWithKernelReferenceKind(KernelReferenceKind::Kernel), ND)"
, "/build/llvm-toolchain-snapshot-13~++20210726100616+dead50d4427c/clang/lib/CodeGen/CodeGenModule.cpp"
, 1391, __extension__ __PRETTY_FUNCTION__))
       (getContext().getAuxTargetInfo() &&(static_cast <bool> (!isa<FunctionDecl>(ND) || !ND
->hasAttr<CUDAGlobalAttr>() || getLangOpts().CUDAIsDevice
 || (getContext().getAuxTargetInfo() && (getContext()
.getAuxTargetInfo()->getCXXABI() != getContext().getTargetInfo
().getCXXABI())) || getCUDARuntime().getDeviceSideName(ND) ==
 getMangledNameImpl( *this, GD.getWithKernelReferenceKind(KernelReferenceKind
::Kernel), ND)) ? void (0) : __assert_fail ("!isa<FunctionDecl>(ND) || !ND->hasAttr<CUDAGlobalAttr>() || getLangOpts().CUDAIsDevice || (getContext().getAuxTargetInfo() && (getContext().getAuxTargetInfo()->getCXXABI() != getContext().getTargetInfo().getCXXABI())) || getCUDARuntime().getDeviceSideName(ND) == getMangledNameImpl( *this, GD.getWithKernelReferenceKind(KernelReferenceKind::Kernel), ND)"
, "/build/llvm-toolchain-snapshot-13~++20210726100616+dead50d4427c/clang/lib/CodeGen/CodeGenModule.cpp"
, 1391, __extension__ __PRETTY_FUNCTION__))
        (getContext().getAuxTargetInfo()->getCXXABI() !=(static_cast <bool> (!isa<FunctionDecl>(ND) || !ND
->hasAttr<CUDAGlobalAttr>() || getLangOpts().CUDAIsDevice
 || (getContext().getAuxTargetInfo() && (getContext()
.getAuxTargetInfo()->getCXXABI() != getContext().getTargetInfo
().getCXXABI())) || getCUDARuntime().getDeviceSideName(ND) ==
 getMangledNameImpl( *this, GD.getWithKernelReferenceKind(KernelReferenceKind
::Kernel), ND)) ? void (0) : __assert_fail ("!isa<FunctionDecl>(ND) || !ND->hasAttr<CUDAGlobalAttr>() || getLangOpts().CUDAIsDevice || (getContext().getAuxTargetInfo() && (getContext().getAuxTargetInfo()->getCXXABI() != getContext().getTargetInfo().getCXXABI())) || getCUDARuntime().getDeviceSideName(ND) == getMangledNameImpl( *this, GD.getWithKernelReferenceKind(KernelReferenceKind::Kernel), ND)"
, "/build/llvm-toolchain-snapshot-13~++20210726100616+dead50d4427c/clang/lib/CodeGen/CodeGenModule.cpp"
, 1391, __extension__ __PRETTY_FUNCTION__))
         getContext().getTargetInfo().getCXXABI())) ||(static_cast <bool> (!isa<FunctionDecl>(ND) || !ND
->hasAttr<CUDAGlobalAttr>() || getLangOpts().CUDAIsDevice
 || (getContext().getAuxTargetInfo() && (getContext()
.getAuxTargetInfo()->getCXXABI() != getContext().getTargetInfo
().getCXXABI())) || getCUDARuntime().getDeviceSideName(ND) ==
 getMangledNameImpl( *this, GD.getWithKernelReferenceKind(KernelReferenceKind
::Kernel), ND)) ? void (0) : __assert_fail ("!isa<FunctionDecl>(ND) || !ND->hasAttr<CUDAGlobalAttr>() || getLangOpts().CUDAIsDevice || (getContext().getAuxTargetInfo() && (getContext().getAuxTargetInfo()->getCXXABI() != getContext().getTargetInfo().getCXXABI())) || getCUDARuntime().getDeviceSideName(ND) == getMangledNameImpl( *this, GD.getWithKernelReferenceKind(KernelReferenceKind::Kernel), ND)"
, "/build/llvm-toolchain-snapshot-13~++20210726100616+dead50d4427c/clang/lib/CodeGen/CodeGenModule.cpp"
, 1391, __extension__ __PRETTY_FUNCTION__))
       getCUDARuntime().getDeviceSideName(ND) ==(static_cast <bool> (!isa<FunctionDecl>(ND) || !ND
->hasAttr<CUDAGlobalAttr>() || getLangOpts().CUDAIsDevice
 || (getContext().getAuxTargetInfo() && (getContext()
.getAuxTargetInfo()->getCXXABI() != getContext().getTargetInfo
().getCXXABI())) || getCUDARuntime().getDeviceSideName(ND) ==
 getMangledNameImpl( *this, GD.getWithKernelReferenceKind(KernelReferenceKind
::Kernel), ND)) ? void (0) : __assert_fail ("!isa<FunctionDecl>(ND) || !ND->hasAttr<CUDAGlobalAttr>() || getLangOpts().CUDAIsDevice || (getContext().getAuxTargetInfo() && (getContext().getAuxTargetInfo()->getCXXABI() != getContext().getTargetInfo().getCXXABI())) || getCUDARuntime().getDeviceSideName(ND) == getMangledNameImpl( *this, GD.getWithKernelReferenceKind(KernelReferenceKind::Kernel), ND)"
, "/build/llvm-toolchain-snapshot-13~++20210726100616+dead50d4427c/clang/lib/CodeGen/CodeGenModule.cpp"
, 1391, __extension__ __PRETTY_FUNCTION__))
           getMangledNameImpl((static_cast <bool> (!isa<FunctionDecl>(ND) || !ND
->hasAttr<CUDAGlobalAttr>() || getLangOpts().CUDAIsDevice
 || (getContext().getAuxTargetInfo() && (getContext()
.getAuxTargetInfo()->getCXXABI() != getContext().getTargetInfo
().getCXXABI())) || getCUDARuntime().getDeviceSideName(ND) ==
 getMangledNameImpl( *this, GD.getWithKernelReferenceKind(KernelReferenceKind
::Kernel), ND)) ? void (0) : __assert_fail ("!isa<FunctionDecl>(ND) || !ND->hasAttr<CUDAGlobalAttr>() || getLangOpts().CUDAIsDevice || (getContext().getAuxTargetInfo() && (getContext().getAuxTargetInfo()->getCXXABI() != getContext().getTargetInfo().getCXXABI())) || getCUDARuntime().getDeviceSideName(ND) == getMangledNameImpl( *this, GD.getWithKernelReferenceKind(KernelReferenceKind::Kernel), ND)"
, "/build/llvm-toolchain-snapshot-13~++20210726100616+dead50d4427c/clang/lib/CodeGen/CodeGenModule.cpp"
, 1391, __extension__ __PRETTY_FUNCTION__))
               *this,(static_cast <bool> (!isa<FunctionDecl>(ND) || !ND
->hasAttr<CUDAGlobalAttr>() || getLangOpts().CUDAIsDevice
 || (getContext().getAuxTargetInfo() && (getContext()
.getAuxTargetInfo()->getCXXABI() != getContext().getTargetInfo
().getCXXABI())) || getCUDARuntime().getDeviceSideName(ND) ==
 getMangledNameImpl( *this, GD.getWithKernelReferenceKind(KernelReferenceKind
::Kernel), ND)) ? void (0) : __assert_fail ("!isa<FunctionDecl>(ND) || !ND->hasAttr<CUDAGlobalAttr>() || getLangOpts().CUDAIsDevice || (getContext().getAuxTargetInfo() && (getContext().getAuxTargetInfo()->getCXXABI() != getContext().getTargetInfo().getCXXABI())) || getCUDARuntime().getDeviceSideName(ND) == getMangledNameImpl( *this, GD.getWithKernelReferenceKind(KernelReferenceKind::Kernel), ND)"
, "/build/llvm-toolchain-snapshot-13~++20210726100616+dead50d4427c/clang/lib/CodeGen/CodeGenModule.cpp"
, 1391, __extension__ __PRETTY_FUNCTION__))
               GD.getWithKernelReferenceKind(KernelReferenceKind::Kernel),(static_cast <bool> (!isa<FunctionDecl>(ND) || !ND
->hasAttr<CUDAGlobalAttr>() || getLangOpts().CUDAIsDevice
 || (getContext().getAuxTargetInfo() && (getContext()
.getAuxTargetInfo()->getCXXABI() != getContext().getTargetInfo
().getCXXABI())) || getCUDARuntime().getDeviceSideName(ND) ==
 getMangledNameImpl( *this, GD.getWithKernelReferenceKind(KernelReferenceKind
::Kernel), ND)) ? void (0) : __assert_fail ("!isa<FunctionDecl>(ND) || !ND->hasAttr<CUDAGlobalAttr>() || getLangOpts().CUDAIsDevice || (getContext().getAuxTargetInfo() && (getContext().getAuxTargetInfo()->getCXXABI() != getContext().getTargetInfo().getCXXABI())) || getCUDARuntime().getDeviceSideName(ND) == getMangledNameImpl( *this, GD.getWithKernelReferenceKind(KernelReferenceKind::Kernel), ND)"
, "/build/llvm-toolchain-snapshot-13~++20210726100616+dead50d4427c/clang/lib/CodeGen/CodeGenModule.cpp"
, 1391, __extension__ __PRETTY_FUNCTION__))
               ND))(static_cast <bool> (!isa<FunctionDecl>(ND) || !ND
->hasAttr<CUDAGlobalAttr>() || getLangOpts().CUDAIsDevice
 || (getContext().getAuxTargetInfo() && (getContext()
.getAuxTargetInfo()->getCXXABI() != getContext().getTargetInfo
().getCXXABI())) || getCUDARuntime().getDeviceSideName(ND) ==
 getMangledNameImpl( *this, GD.getWithKernelReferenceKind(KernelReferenceKind
::Kernel), ND)) ? void (0) : __assert_fail ("!isa<FunctionDecl>(ND) || !ND->hasAttr<CUDAGlobalAttr>() || getLangOpts().CUDAIsDevice || (getContext().getAuxTargetInfo() && (getContext().getAuxTargetInfo()->getCXXABI() != getContext().getTargetInfo().getCXXABI())) || getCUDARuntime().getDeviceSideName(ND) == getMangledNameImpl( *this, GD.getWithKernelReferenceKind(KernelReferenceKind::Kernel), ND)"
, "/build/llvm-toolchain-snapshot-13~++20210726100616+dead50d4427c/clang/lib/CodeGen/CodeGenModule.cpp"
, 1391, __extension__ __PRETTY_FUNCTION__));

auto Result = Manglings.insert(std::make_pair(MangledName, GD));
return MangledDeclNames[CanonicalGD] = Result.first->first();
1395}

1397StringRef CodeGenModule::getBlockMangledName(GlobalDecl GD,
                                           const BlockDecl *BD) {
MangleContext &MangleCtx = getCXXABI().getMangleContext();
const Decl *D = GD.getDecl();

SmallString<256> Buffer;
llvm::raw_svector_ostream Out(Buffer);
if (!D)
  MangleCtx.mangleGlobalBlock(BD,
    dyn_cast_or_null<VarDecl>(initializedGlobalDecl.getDecl()), Out);
else if (const auto *CD = dyn_cast<CXXConstructorDecl>(D))
  MangleCtx.mangleCtorBlock(CD, GD.getCtorType(), BD, Out);
else if (const auto *DD = dyn_cast<CXXDestructorDecl>(D))
  MangleCtx.mangleDtorBlock(DD, GD.getDtorType(), BD, Out);
else
  MangleCtx.mangleBlock(cast<DeclContext>(D), BD, Out);

auto Result = Manglings.insert(std::make_pair(Out.str(), BD));
return Result.first->first();
1416}

1418llvm::GlobalValue *CodeGenModule::GetGlobalValue(StringRef Name) {
return getModule().getNamedValue(Name);
1420}

1422/// AddGlobalCtor - Add a function to the list that will be called before
1423/// main() runs.
1424void CodeGenModule::AddGlobalCtor(llvm::Function *Ctor, int Priority,
                                llvm::Constant *AssociatedData) {
// FIXME: Type coercion of void()* types.
GlobalCtors.push_back(Structor(Priority, Ctor, AssociatedData));
1428}

1430/// AddGlobalDtor - Add a function to the list that will be called
1431/// when the module is unloaded.
1432void CodeGenModule::AddGlobalDtor(llvm::Function *Dtor, int Priority,
                                bool IsDtorAttrFunc) {
if (CodeGenOpts.RegisterGlobalDtorsWithAtExit &&
    (!getContext().getTargetInfo().getTriple().isOSAIX() || IsDtorAttrFunc)) {
  DtorsUsingAtExit[Priority].push_back(Dtor);
  return;
}

// FIXME: Type coercion of void()* types.
GlobalDtors.push_back(Structor(Priority, Dtor, nullptr));
1442}

1444void CodeGenModule::EmitCtorList(CtorList &Fns, const char *GlobalName) {
if (Fns.empty()) return;

// Ctor function type is void()*.
llvm::FunctionType* CtorFTy = llvm::FunctionType::get(VoidTy, false);
llvm::Type *CtorPFTy = llvm::PointerType::get(CtorFTy,
    TheModule.getDataLayout().getProgramAddressSpace());

// Get the type of a ctor entry, { i32, void ()*, i8* }.
llvm::StructType *CtorStructTy = llvm::StructType::get(
    Int32Ty, CtorPFTy, VoidPtrTy);

// Construct the constructor and destructor arrays.
ConstantInitBuilder builder(*this);
auto ctors = builder.beginArray(CtorStructTy);
for (const auto &I : Fns) {
  auto ctor = ctors.beginStruct(CtorStructTy);
  ctor.addInt(Int32Ty, I.Priority);
  ctor.add(llvm::ConstantExpr::getBitCast(I.Initializer, CtorPFTy));
  if (I.AssociatedData)
    ctor.add(llvm::ConstantExpr::getBitCast(I.AssociatedData, VoidPtrTy));
  else
    ctor.addNullPointer(VoidPtrTy);
  ctor.finishAndAddTo(ctors);
}

auto list =
  ctors.finishAndCreateGlobal(GlobalName, getPointerAlign(),
                              /*constant*/ false,
                              llvm::GlobalValue::AppendingLinkage);

// The LTO linker doesn't seem to like it when we set an alignment
// on appending variables.  Take it off as a workaround.
list->setAlignment(llvm::None);

Fns.clear();
1480}

1482llvm::GlobalValue::LinkageTypes
1483CodeGenModule::getFunctionLinkage(GlobalDecl GD) {
const auto *D = cast<FunctionDecl>(GD.getDecl());

GVALinkage Linkage = getContext().GetGVALinkageForFunction(D);

if (const auto *Dtor = dyn_cast<CXXDestructorDecl>(D))
  return getCXXABI().getCXXDestructorLinkage(Linkage, Dtor, GD.getDtorType());

if (isa<CXXConstructorDecl>(D) &&
    cast<CXXConstructorDecl>(D)->isInheritingConstructor() &&
    Context.getTargetInfo().getCXXABI().isMicrosoft()) {
  // Our approach to inheriting constructors is fundamentally different from
  // that used by the MS ABI, so keep our inheriting constructor thunks
  // internal rather than trying to pick an unambiguous mangling for them.
  return llvm::GlobalValue::InternalLinkage;
}

return getLLVMLinkageForDeclarator(D, Linkage, /*IsConstantVariable=*/false);
1501}

1503llvm::ConstantInt *CodeGenModule::CreateCrossDsoCfiTypeId(llvm::Metadata *MD) {
llvm::MDString *MDS = dyn_cast<llvm::MDString>(MD);
if (!MDS) return nullptr;

return llvm::ConstantInt::get(Int64Ty, llvm::MD5Hash(MDS->getString()));
1508}

1510void CodeGenModule::SetLLVMFunctionAttributes(GlobalDecl GD,
                                            const CGFunctionInfo &Info,
                                            llvm::Function *F, bool IsThunk) {
unsigned CallingConv;
llvm::AttributeList PAL;
ConstructAttributeList(F->getName(), Info, GD, PAL, CallingConv,
                       /*AttrOnCallSite=*/false, IsThunk);
F->setAttributes(PAL);
F->setCallingConv(static_cast<llvm::CallingConv::ID>(CallingConv));
1519}

1521static void removeImageAccessQualifier(std::string& TyName) {
std::string ReadOnlyQual("__read_only");
std::string::size_type ReadOnlyPos = TyName.find(ReadOnlyQual);
if (ReadOnlyPos != std::string::npos)
  // "+ 1" for the space after access qualifier.
  TyName.erase(ReadOnlyPos, ReadOnlyQual.size() + 1);
else {
  std::string WriteOnlyQual("__write_only");
  std::string::size_type WriteOnlyPos = TyName.find(WriteOnlyQual);
  if (WriteOnlyPos != std::string::npos)
    TyName.erase(WriteOnlyPos, WriteOnlyQual.size() + 1);
  else {
    std::string ReadWriteQual("__read_write");
    std::string::size_type ReadWritePos = TyName.find(ReadWriteQual);
    if (ReadWritePos != std::string::npos)
      TyName.erase(ReadWritePos, ReadWriteQual.size() + 1);
  }
}
1539}

1541// Returns the address space id that should be produced to the
1542// kernel_arg_addr_space metadata. This is always fixed to the ids
1543// as specified in the SPIR 2.0 specification in order to differentiate
1544// for example in clGetKernelArgInfo() implementation between the address
1545// spaces with targets without unique mapping to the OpenCL address spaces
1546// (basically all single AS CPUs).
1547static unsigned ArgInfoAddressSpace(LangAS AS) {
switch (AS) {
case LangAS::opencl_global:
  return 1;
case LangAS::opencl_constant:
  return 2;
case LangAS::opencl_local:
  return 3;
case LangAS::opencl_generic:
  return 4; // Not in SPIR 2.0 specs.
case LangAS::opencl_global_device:
  return 5;
case LangAS::opencl_global_host:
  return 6;
default:
  return 0; // Assume private.
}
1564}

1566void CodeGenModule::GenOpenCLArgMetadata(llvm::Function *Fn,
                                       const FunctionDecl *FD,
                                       CodeGenFunction *CGF) {
assert(((FD && CGF) || (!FD && !CGF)) &&(static_cast <bool> (((FD && CGF) || (!FD &&
 !CGF)) && "Incorrect use - FD and CGF should either be both null or not!"
) ? void (0) : __assert_fail ("((FD && CGF) || (!FD && !CGF)) && \"Incorrect use - FD and CGF should either be both null or not!\""
, "/build/llvm-toolchain-snapshot-13~++20210726100616+dead50d4427c/clang/lib/CodeGen/CodeGenModule.cpp"
, 1570, __extension__ __PRETTY_FUNCTION__))
       "Incorrect use - FD and CGF should either be both null or not!")(static_cast <bool> (((FD && CGF) || (!FD &&
 !CGF)) && "Incorrect use - FD and CGF should either be both null or not!"
) ? void (0) : __assert_fail ("((FD && CGF) || (!FD && !CGF)) && \"Incorrect use - FD and CGF should either be both null or not!\""
, "/build/llvm-toolchain-snapshot-13~++20210726100616+dead50d4427c/clang/lib/CodeGen/CodeGenModule.cpp"
, 1570, __extension__ __PRETTY_FUNCTION__));
// Create MDNodes that represent the kernel arg metadata.
// Each MDNode is a list in the form of "key", N number of values which is
// the same number of values as their are kernel arguments.

const PrintingPolicy &Policy = Context.getPrintingPolicy();

// MDNode for the kernel argument address space qualifiers.
SmallVector<llvm::Metadata *, 8> addressQuals;

// MDNode for the kernel argument access qualifiers (images only).
SmallVector<llvm::Metadata *, 8> accessQuals;

// MDNode for the kernel argument type names.
SmallVector<llvm::Metadata *, 8> argTypeNames;

// MDNode for the kernel argument base type names.
SmallVector<llvm::Metadata *, 8> argBaseTypeNames;

// MDNode for the kernel argument type qualifiers.
SmallVector<llvm::Metadata *, 8> argTypeQuals;

// MDNode for the kernel argument names.
SmallVector<llvm::Metadata *, 8> argNames;

if (FD && CGF)
  for (unsigned i = 0, e = FD->getNumParams(); i != e; ++i) {
    const ParmVarDecl *parm = FD->getParamDecl(i);
    QualType ty = parm->getType();
    std::string typeQuals;

    // Get image and pipe access qualifier:
    if (ty->isImageType() || ty->isPipeType()) {
      const Decl *PDecl = parm;
      if (auto *TD = dyn_cast<TypedefType>(ty))
        PDecl = TD->getDecl();
      const OpenCLAccessAttr *A = PDecl->getAttr<OpenCLAccessAttr>();
      if (A && A->isWriteOnly())
        accessQuals.push_back(llvm::MDString::get(VMContext, "write_only"));
      else if (A && A->isReadWrite())
        accessQuals.push_back(llvm::MDString::get(VMContext, "read_write"));
      else
        accessQuals.push_back(llvm::MDString::get(VMContext, "read_only"));
    } else
      accessQuals.push_back(llvm::MDString::get(VMContext, "none"));

    // Get argument name.
    argNames.push_back(llvm::MDString::get(VMContext, parm->getName()));

    auto getTypeSpelling = [&](QualType Ty) {
      auto typeName = Ty.getUnqualifiedType().getAsString(Policy);

      if (Ty.isCanonical()) {
        StringRef typeNameRef = typeName;
        // Turn "unsigned type" to "utype"
        if (typeNameRef.consume_front("unsigned "))
          return std::string("u") + typeNameRef.str();
        if (typeNameRef.consume_front("signed "))
          return typeNameRef.str();
      }

      return typeName;
    };

    if (ty->isPointerType()) {
      QualType pointeeTy = ty->getPointeeType();

      // Get address qualifier.
      addressQuals.push_back(
          llvm::ConstantAsMetadata::get(CGF->Builder.getInt32(
              ArgInfoAddressSpace(pointeeTy.getAddressSpace()))));

      // Get argument type name.
      std::string typeName = getTypeSpelling(pointeeTy) + "*";
      std::string baseTypeName =
          getTypeSpelling(pointeeTy.getCanonicalType()) + "*";
      argTypeNames.push_back(llvm::MDString::get(VMContext, typeName));
      argBaseTypeNames.push_back(
          llvm::MDString::get(VMContext, baseTypeName));

      // Get argument type qualifiers:
      if (ty.isRestrictQualified())
        typeQuals = "restrict";
      if (pointeeTy.isConstQualified() ||
          (pointeeTy.getAddressSpace() == LangAS::opencl_constant))
        typeQuals += typeQuals.empty() ? "const" : " const";
      if (pointeeTy.isVolatileQualified())
        typeQuals += typeQuals.empty() ? "volatile" : " volatile";
    } else {
      uint32_t AddrSpc = 0;
      bool isPipe = ty->isPipeType();
      if (ty->isImageType() || isPipe)
        AddrSpc = ArgInfoAddressSpace(LangAS::opencl_global);

      addressQuals.push_back(
          llvm::ConstantAsMetadata::get(CGF->Builder.getInt32(AddrSpc)));

      // Get argument type name.
      ty = isPipe ? ty->castAs<PipeType>()->getElementType() : ty;
      std::string typeName = getTypeSpelling(ty);
      std::string baseTypeName = getTypeSpelling(ty.getCanonicalType());

      // Remove access qualifiers on images
      // (as they are inseparable from type in clang implementation,
      // but OpenCL spec provides a special query to get access qualifier
      // via clGetKernelArgInfo with CL_KERNEL_ARG_ACCESS_QUALIFIER):
      if (ty->isImageType()) {
        removeImageAccessQualifier(typeName);
        removeImageAccessQualifier(baseTypeName);
      }

      argTypeNames.push_back(llvm::MDString::get(VMContext, typeName));
      argBaseTypeNames.push_back(
          llvm::MDString::get(VMContext, baseTypeName));

      if (isPipe)
        typeQuals = "pipe";
    }
    argTypeQuals.push_back(llvm::MDString::get(VMContext, typeQuals));
  }

Fn->setMetadata("kernel_arg_addr_space",
                llvm::MDNode::get(VMContext, addressQuals));
Fn->setMetadata("kernel_arg_access_qual",
                llvm::MDNode::get(VMContext, accessQuals));
Fn->setMetadata("kernel_arg_type",
                llvm::MDNode::get(VMContext, argTypeNames));
Fn->setMetadata("kernel_arg_base_type",
                llvm::MDNode::get(VMContext, argBaseTypeNames));
Fn->setMetadata("kernel_arg_type_qual",
                llvm::MDNode::get(VMContext, argTypeQuals));
if (getCodeGenOpts().EmitOpenCLArgMetadata)
  Fn->setMetadata("kernel_arg_name",
                  llvm::MDNode::get(VMContext, argNames));
1704}

1706/// Determines whether the language options require us to model
1707/// unwind exceptions.  We treat -fexceptions as mandating this
1708/// except under the fragile ObjC ABI with only ObjC exceptions
1709/// enabled.  This means, for example, that C with -fexceptions
1710/// enables this.
1711static bool hasUnwindExceptions(const LangOptions &LangOpts) {
// If exceptions are completely disabled, obviously this is false.
if (!LangOpts.Exceptions) return false;

// If C++ exceptions are enabled, this is true.
if (LangOpts.CXXExceptions) return true;

// If ObjC exceptions are enabled, this depends on the ABI.
if (LangOpts.ObjCExceptions) {
  return LangOpts.ObjCRuntime.hasUnwindExceptions();
}

return true;
1724}

1726static bool requiresMemberFunctionPointerTypeMetadata(CodeGenModule &CGM,
                                                    const CXXMethodDecl *MD) {
// Check that the type metadata can ever actually be used by a call.
if (!CGM.getCodeGenOpts().LTOUnit ||
    !CGM.HasHiddenLTOVisibility(MD->getParent()))
  return false;

// Only functions whose address can be taken with a member function pointer
// need this sort of type metadata.
return !MD->isStatic() && !MD->isVirtual() && !isa<CXXConstructorDecl>(MD) &&
       !isa<CXXDestructorDecl>(MD);
1737}

1739std::vector<const CXXRecordDecl *>
1740CodeGenModule::getMostBaseClasses(const CXXRecordDecl *RD) {
llvm::SetVector<const CXXRecordDecl *> MostBases;

std::function<void (const CXXRecordDecl *)> CollectMostBases;
CollectMostBases = [&](const CXXRecordDecl *RD) {
  if (RD->getNumBases() == 0)
    MostBases.insert(RD);
  for (const CXXBaseSpecifier &B : RD->bases())
    CollectMostBases(B.getType()->getAsCXXRecordDecl());
};
CollectMostBases(RD);
return MostBases.takeVector();
1752}

1754void CodeGenModule::SetLLVMFunctionAttributesForDefinition(const Decl *D,
                                                         llvm::Function *F) {
llvm::AttrBuilder B;

if (CodeGenOpts.UnwindTables)
  B.addAttribute(llvm::Attribute::UWTable);

if (CodeGenOpts.StackClashProtector)
  B.addAttribute("probe-stack", "inline-asm");

if (!hasUnwindExceptions(LangOpts))
  B.addAttribute(llvm::Attribute::NoUnwind);

if (!D || !D->hasAttr<NoStackProtectorAttr>()) {
  if (LangOpts.getStackProtector() == LangOptions::SSPOn)
    B.addAttribute(llvm::Attribute::StackProtect);
  else if (LangOpts.getStackProtector() == LangOptions::SSPStrong)
    B.addAttribute(llvm::Attribute::StackProtectStrong);
  else if (LangOpts.getStackProtector() == LangOptions::SSPReq)
    B.addAttribute(llvm::Attribute::StackProtectReq);
}

if (!D) {
  // If we don't have a declaration to control inlining, the function isn't
  // explicitly marked as alwaysinline for semantic reasons, and inlining is
  // disabled, mark the function as noinline.
  if (!F->hasFnAttribute(llvm::Attribute::AlwaysInline) &&
      CodeGenOpts.getInlining() == CodeGenOptions::OnlyAlwaysInlining)
    B.addAttribute(llvm::Attribute::NoInline);

  F->addAttributes(llvm::AttributeList::FunctionIndex, B);
  return;
}

// Track whether we need to add the optnone LLVM attribute,
// starting with the default for this optimization level.
bool ShouldAddOptNone =
    !CodeGenOpts.DisableO0ImplyOptNone && CodeGenOpts.OptimizationLevel == 0;
// We can't add optnone in the following cases, it won't pass the verifier.
ShouldAddOptNone &= !D->hasAttr<MinSizeAttr>();
ShouldAddOptNone &= !D->hasAttr<AlwaysInlineAttr>();

// Add optnone, but do so only if the function isn't always_inline.
if ((ShouldAddOptNone || D->hasAttr<OptimizeNoneAttr>()) &&
    !F->hasFnAttribute(llvm::Attribute::AlwaysInline)) {
  B.addAttribute(llvm::Attribute::OptimizeNone);

  // OptimizeNone implies noinline; we should not be inlining such functions.
  B.addAttribute(llvm::Attribute::NoInline);

  // We still need to handle naked functions even though optnone subsumes
  // much of their semantics.
  if (D->hasAttr<NakedAttr>())
    B.addAttribute(llvm::Attribute::Naked);

  // OptimizeNone wins over OptimizeForSize and MinSize.
  F->removeFnAttr(llvm::Attribute::OptimizeForSize);
  F->removeFnAttr(llvm::Attribute::MinSize);
} else if (D->hasAttr<NakedAttr>()) {
  // Naked implies noinline: we should not be inlining such functions.
  B.addAttribute(llvm::Attribute::Naked);
  B.addAttribute(llvm::Attribute::NoInline);
} else if (D->hasAttr<NoDuplicateAttr>()) {
  B.addAttribute(llvm::Attribute::NoDuplicate);
} else if (D->hasAttr<NoInlineAttr>() && !F->hasFnAttribute(llvm::Attribute::AlwaysInline)) {
  // Add noinline if the function isn't always_inline.
  B.addAttribute(llvm::Attribute::NoInline);
} else if (D->hasAttr<AlwaysInlineAttr>() &&
           !F->hasFnAttribute(llvm::Attribute::NoInline)) {
  // (noinline wins over always_inline, and we can't specify both in IR)
  B.addAttribute(llvm::Attribute::AlwaysInline);
} else if (CodeGenOpts.getInlining() == CodeGenOptions::OnlyAlwaysInlining) {
  // If we're not inlining, then force everything that isn't always_inline to
  // carry an explicit noinline attribute.
  if (!F->hasFnAttribute(llvm::Attribute::AlwaysInline))
    B.addAttribute(llvm::Attribute::NoInline);
} else {
  // Otherwise, propagate the inline hint attribute and potentially use its
  // absence to mark things as noinline.
  if (auto *FD = dyn_cast<FunctionDecl>(D)) {
    // Search function and template pattern redeclarations for inline.
    auto CheckForInline = [](const FunctionDecl *FD) {
      auto CheckRedeclForInline = [](const FunctionDecl *Redecl) {
        return Redecl->isInlineSpecified();
      };
      if (any_of(FD->redecls(), CheckRedeclForInline))
        return true;
      const FunctionDecl *Pattern = FD->getTemplateInstantiationPattern();
      if (!Pattern)
        return false;
      return any_of(Pattern->redecls(), CheckRedeclForInline);
    };
    if (CheckForInline(FD)) {
      B.addAttribute(llvm::Attribute::InlineHint);
    } else if (CodeGenOpts.getInlining() ==
                   CodeGenOptions::OnlyHintInlining &&
               !FD->isInlined() &&
               !F->hasFnAttribute(llvm::Attribute::AlwaysInline)) {
      B.addAttribute(llvm::Attribute::NoInline);
    }
  }
}

// Add other optimization related attributes if we are optimizing this
// function.
if (!D->hasAttr<OptimizeNoneAttr>()) {
  if (D->hasAttr<ColdAttr>()) {
    if (!ShouldAddOptNone)
      B.addAttribute(llvm::Attribute::OptimizeForSize);
    B.addAttribute(llvm::Attribute::Cold);
  }
  if (D->hasAttr<HotAttr>())
    B.addAttribute(llvm::Attribute::Hot);
  if (D->hasAttr<MinSizeAttr>())
    B.addAttribute(llvm::Attribute::MinSize);
}

F->addAttributes(llvm::AttributeList::FunctionIndex, B);

unsigned alignment = D->getMaxAlignment() / Context.getCharWidth();
if (alignment)
  F->setAlignment(llvm::Align(alignment));

if (!D->hasAttr<AlignedAttr>())
  if (LangOpts.FunctionAlignment)
    F->setAlignment(llvm::Align(1ull << LangOpts.FunctionAlignment));

// Some C++ ABIs require 2-byte alignment for member functions, in order to
// reserve a bit for differentiating between virtual and non-virtual member
// functions. If the current target's C++ ABI requires this and this is a
// member function, set its alignment accordingly.
if (getTarget().getCXXABI().areMemberFunctionsAligned()) {
  if (F->getAlignment() < 2 && isa<CXXMethodDecl>(D))
    F->setAlignment(llvm::Align(2));
}

// In the cross-dso CFI mode with canonical jump tables, we want !type
// attributes on definitions only.
if (CodeGenOpts.SanitizeCfiCrossDso &&
    CodeGenOpts.SanitizeCfiCanonicalJumpTables) {
  if (auto *FD = dyn_cast<FunctionDecl>(D)) {
    // Skip available_externally functions. They won't be codegen'ed in the
    // current module anyway.
    if (getContext().GetGVALinkageForFunction(FD) != GVA_AvailableExternally)
      CreateFunctionTypeMetadataForIcall(FD, F);
  }
}

// Emit type metadata on member functions for member function pointer checks.
// These are only ever necessary on definitions; we're guaranteed that the
// definition will be present in the LTO unit as a result of LTO visibility.
auto *MD = dyn_cast<CXXMethodDecl>(D);
if (MD && requiresMemberFunctionPointerTypeMetadata(*this, MD)) {
  for (const CXXRecordDecl *Base : getMostBaseClasses(MD->getParent())) {
    llvm::Metadata *Id =
        CreateMetadataIdentifierForType(Context.getMemberPointerType(
            MD->getType(), Context.getRecordType(Base).getTypePtr()));
    F->addTypeMetadata(0, Id);
  }
}
1914}

1916void CodeGenModule::setLLVMFunctionFEnvAttributes(const FunctionDecl *D,
                                                llvm::Function *F) {
if (D->hasAttr<StrictFPAttr>()) {
  llvm::AttrBuilder FuncAttrs;
  FuncAttrs.addAttribute("strictfp");
  F->addAttributes(llvm::AttributeList::FunctionIndex, FuncAttrs);
}
1923}

1925void CodeGenModule::SetCommonAttributes(GlobalDecl GD, llvm::GlobalValue *GV) {
const Decl *D = GD.getDecl();
if (dyn_cast_or_null<NamedDecl>(D))
  setGVProperties(GV, GD);
else
  GV->setVisibility(llvm::GlobalValue::DefaultVisibility);

if (D && D->hasAttr<UsedAttr>())
  addUsedOrCompilerUsedGlobal(GV);

if (CodeGenOpts.KeepStaticConsts && D && isa<VarDecl>(D)) {
  const auto *VD = cast<VarDecl>(D);
  if (VD->getType().isConstQualified() &&
      VD->getStorageDuration() == SD_Static)
    addUsedOrCompilerUsedGlobal(GV);
}
1941}

1943bool CodeGenModule::GetCPUAndFeaturesAttributes(GlobalDecl GD,
                                              llvm::AttrBuilder &Attrs) {
// Add target-cpu and target-features attributes to functions. If
// we have a decl for the function and it has a target attribute then
// parse that and add it to the feature set.
StringRef TargetCPU = getTarget().getTargetOpts().CPU;
StringRef TuneCPU = getTarget().getTargetOpts().TuneCPU;
std::vector<std::string> Features;
const auto *FD = dyn_cast_or_null<FunctionDecl>(GD.getDecl());
FD = FD ? FD->getMostRecentDecl() : FD;
const auto *TD = FD ? FD->getAttr<TargetAttr>() : nullptr;
const auto *SD = FD ? FD->getAttr<CPUSpecificAttr>() : nullptr;
bool AddedAttr = false;
if (TD || SD) {
  llvm::StringMap<bool> FeatureMap;
  getContext().getFunctionFeatureMap(FeatureMap, GD);

  // Produce the canonical string for this set of features.
  for (const llvm::StringMap<bool>::value_type &Entry : FeatureMap)
    Features.push_back((Entry.getValue() ? "+" : "-") + Entry.getKey().str());

  // Now add the target-cpu and target-features to the function.
  // While we populated the feature map above, we still need to
  // get and parse the target attribute so we can get the cpu for
  // the function.
  if (TD) {
    ParsedTargetAttr ParsedAttr = TD->parse();
    if (!ParsedAttr.Architecture.empty() &&
        getTarget().isValidCPUName(ParsedAttr.Architecture)) {
      TargetCPU = ParsedAttr.Architecture;
      TuneCPU = ""; // Clear the tune CPU.
    }
    if (!ParsedAttr.Tune.empty() &&
        getTarget().isValidCPUName(ParsedAttr.Tune))
      TuneCPU = ParsedAttr.Tune;
  }
} else {
  // Otherwise just add the existing target cpu and target features to the
  // function.
  Features = getTarget().getTargetOpts().Features;
}

if (!TargetCPU.empty()) {
  Attrs.addAttribute("target-cpu", TargetCPU);
  AddedAttr = true;
}
if (!TuneCPU.empty()) {
  Attrs.addAttribute("tune-cpu", TuneCPU);
  AddedAttr = true;
}
if (!Features.empty()) {
  llvm::sort(Features);
  Attrs.addAttribute("target-features", llvm::join(Features, ","));
  AddedAttr = true;
}

return AddedAttr;
2000}

2002void CodeGenModule::setNonAliasAttributes(GlobalDecl GD,
                                        llvm::GlobalObject *GO) {
const Decl *D = GD.getDecl();
SetCommonAttributes(GD, GO);

if (D) {
  if (auto *GV = dyn_cast<llvm::GlobalVariable>(GO)) {
    if (D->hasAttr<RetainAttr>())
      addUsedGlobal(GV);
    if (auto *SA = D->getAttr<PragmaClangBSSSectionAttr>())
      GV->addAttribute("bss-section", SA->getName());
    if (auto *SA = D->getAttr<PragmaClangDataSectionAttr>())
      GV->addAttribute("data-section", SA->getName());
    if (auto *SA = D->getAttr<PragmaClangRodataSectionAttr>())
      GV->addAttribute("rodata-section", SA->getName());
    if (auto *SA = D->getAttr<PragmaClangRelroSectionAttr>())
      GV->addAttribute("relro-section", SA->getName());
  }

  if (auto *F = dyn_cast<llvm::Function>(GO)) {
    if (D->hasAttr<RetainAttr>())
      addUsedGlobal(F);
    if (auto *SA = D->getAttr<PragmaClangTextSectionAttr>())
      if (!D->getAttr<SectionAttr>())
        F->addFnAttr("implicit-section-name", SA->getName());

    llvm::AttrBuilder Attrs;
    if (GetCPUAndFeaturesAttributes(GD, Attrs)) {
      // We know that GetCPUAndFeaturesAttributes will always have the
      // newest set, since it has the newest possible FunctionDecl, so the
      // new ones should replace the old.
      llvm::AttrBuilder RemoveAttrs;
      RemoveAttrs.addAttribute("target-cpu");
      RemoveAttrs.addAttribute("target-features");
      RemoveAttrs.addAttribute("tune-cpu");
      F->removeAttributes(llvm::AttributeList::FunctionIndex, RemoveAttrs);
      F->addAttributes(llvm::AttributeList::FunctionIndex, Attrs);
    }
  }

  if (const auto *CSA = D->getAttr<CodeSegAttr>())
    GO->setSection(CSA->getName());
  else if (const auto *SA = D->getAttr<SectionAttr>())
    GO->setSection(SA->getName());
}

getTargetCodeGenInfo().setTargetAttributes(D, GO, *this);
2049}

2051void CodeGenModule::SetInternalFunctionAttributes(GlobalDecl GD,
                                                llvm::Function *F,
                                                const CGFunctionInfo &FI) {
const Decl *D = GD.getDecl();
SetLLVMFunctionAttributes(GD, FI, F, /*IsThunk=*/false);
SetLLVMFunctionAttributesForDefinition(D, F);

F->setLinkage(llvm::Function::InternalLinkage);

setNonAliasAttributes(GD, F);
2061}

2063static void setLinkageForGV(llvm::GlobalValue *GV, const NamedDecl *ND) {
// Set linkage and visibility in case we never see a definition.
LinkageInfo LV = ND->getLinkageAndVisibility();
// Don't set internal linkage on declarations.
// "extern_weak" is overloaded in LLVM; we probably should have
// separate linkage types for this.
if (isExternallyVisible(LV.getLinkage()) &&
    (ND->hasAttr<WeakAttr>() || ND->isWeakImported()))
  GV->setLinkage(llvm::GlobalValue::ExternalWeakLinkage);
2072}

2074void CodeGenModule::CreateFunctionTypeMetadataForIcall(const FunctionDecl *FD,
                                                     llvm::Function *F) {
// Only if we are checking indirect calls.
if (!LangOpts.Sanitize.has(SanitizerKind::CFIICall))
  return;

// Non-static class methods are handled via vtable or member function pointer
// checks elsewhere.
if (isa<CXXMethodDecl>(FD) && !cast<CXXMethodDecl>(FD)->isStatic())
  return;

llvm::Metadata *MD = CreateMetadataIdentifierForType(FD->getType());
F->addTypeMetadata(0, MD);
F->addTypeMetadata(0, CreateMetadataIdentifierGeneralized(FD->getType()));

// Emit a hash-based bit set entry for cross-DSO calls.
if (CodeGenOpts.SanitizeCfiCrossDso)
  if (auto CrossDsoTypeId = CreateCrossDsoCfiTypeId(MD))
    F->addTypeMetadata(0, llvm::ConstantAsMetadata::get(CrossDsoTypeId));
2093}

2095void CodeGenModule::SetFunctionAttributes(GlobalDecl GD, llvm::Function *F,
                                        bool IsIncompleteFunction,
                                        bool IsThunk) {

if (llvm::Intrinsic::ID IID = F->getIntrinsicID()) {
  // If this is an intrinsic function, set the function's attributes
  // to the intrinsic's attributes.
  F->setAttributes(llvm::Intrinsic::getAttributes(getLLVMContext(), IID));
  return;
}

const auto *FD = cast<FunctionDecl>(GD.getDecl());

if (!IsIncompleteFunction)
  SetLLVMFunctionAttributes(GD, getTypes().arrangeGlobalDeclaration(GD), F,
                            IsThunk);

// Add the Returned attribute for "this", except for iOS 5 and earlier
// where substantial code, including the libstdc++ dylib, was compiled with
// GCC and does not actually return "this".
if (!IsThunk && getCXXABI().HasThisReturn(GD) &&
    !(getTriple().isiOS() && getTriple().isOSVersionLT(6))) {
  assert(!F->arg_empty() &&(static_cast <bool> (!F->arg_empty() && F->
arg_begin()->getType() ->canLosslesslyBitCastTo(F->getReturnType
()) && "unexpected this return") ? void (0) : __assert_fail
 ("!F->arg_empty() && F->arg_begin()->getType() ->canLosslesslyBitCastTo(F->getReturnType()) && \"unexpected this return\""
, "/build/llvm-toolchain-snapshot-13~++20210726100616+dead50d4427c/clang/lib/CodeGen/CodeGenModule.cpp"
, 2120, __extension__ __PRETTY_FUNCTION__))
         F->arg_begin()->getType()(static_cast <bool> (!F->arg_empty() && F->
arg_begin()->getType() ->canLosslesslyBitCastTo(F->getReturnType
()) && "unexpected this return") ? void (0) : __assert_fail
 ("!F->arg_empty() && F->arg_begin()->getType() ->canLosslesslyBitCastTo(F->getReturnType()) && \"unexpected this return\""
, "/build/llvm-toolchain-snapshot-13~++20210726100616+dead50d4427c/clang/lib/CodeGen/CodeGenModule.cpp"
, 2120, __extension__ __PRETTY_FUNCTION__))
           ->canLosslesslyBitCastTo(F->getReturnType()) &&(static_cast <bool> (!F->arg_empty() && F->
arg_begin()->getType() ->canLosslesslyBitCastTo(F->getReturnType
()) && "unexpected this return") ? void (0) : __assert_fail
 ("!F->arg_empty() && F->arg_begin()->getType() ->canLosslesslyBitCastTo(F->getReturnType()) && \"unexpected this return\""
, "/build/llvm-toolchain-snapshot-13~++20210726100616+dead50d4427c/clang/lib/CodeGen/CodeGenModule.cpp"
, 2120, __extension__ __PRETTY_FUNCTION__))
         "unexpected this return")(static_cast <bool> (!F->arg_empty() && F->
arg_begin()->getType() ->canLosslesslyBitCastTo(F->getReturnType
()) && "unexpected this return") ? void (0) : __assert_fail
 ("!F->arg_empty() && F->arg_begin()->getType() ->canLosslesslyBitCastTo(F->getReturnType()) && \"unexpected this return\""
, "/build/llvm-toolchain-snapshot-13~++20210726100616+dead50d4427c/clang/lib/CodeGen/CodeGenModule.cpp"
, 2120, __extension__ __PRETTY_FUNCTION__));
  F->addAttribute(1, llvm::Attribute::Returned);
}

// Only a few attributes are set on declarations; these may later be
// overridden by a definition.

setLinkageForGV(F, FD);
setGVProperties(F, FD);

// Setup target-specific attributes.
if (!IsIncompleteFunction && F->isDeclaration())
  getTargetCodeGenInfo().setTargetAttributes(FD, F, *this);

if (const auto *CSA = FD->getAttr<CodeSegAttr>())
  F->setSection(CSA->getName());
else if (const auto *SA = FD->getAttr<SectionAttr>())
   F->setSection(SA->getName());

// If we plan on emitting this inline builtin, we can't treat it as a builtin.
if (FD->isInlineBuiltinDeclaration()) {
  const FunctionDecl *FDBody;
  bool HasBody = FD->hasBody(FDBody);
  (void)HasBody;
  assert(HasBody && "Inline builtin declarations should always have an "(static_cast <bool> (HasBody && "Inline builtin declarations should always have an "
 "available body!") ? void (0) : __assert_fail ("HasBody && \"Inline builtin declarations should always have an \" \"available body!\""
, "/build/llvm-toolchain-snapshot-13~++20210726100616+dead50d4427c/clang/lib/CodeGen/CodeGenModule.cpp"
, 2145, __extension__ __PRETTY_FUNCTION__))
                    "available body!")(static_cast <bool> (HasBody && "Inline builtin declarations should always have an "
 "available body!") ? void (0) : __assert_fail ("HasBody && \"Inline builtin declarations should always have an \" \"available body!\""
, "/build/llvm-toolchain-snapshot-13~++20210726100616+dead50d4427c/clang/lib/CodeGen/CodeGenModule.cpp"
, 2145, __extension__ __PRETTY_FUNCTION__));
  if (shouldEmitFunction(FDBody))
    F->addAttribute(llvm::AttributeList::FunctionIndex,
                    llvm::Attribute::NoBuiltin);
}

if (FD->isReplaceableGlobalAllocationFunction()) {
  // A replaceable global allocation function does not act like a builtin by
  // default, only if it is invoked by a new-expression or delete-expression.
  F->addAttribute(llvm::AttributeList::FunctionIndex,
                  llvm::Attribute::NoBuiltin);
}

if (isa<CXXConstructorDecl>(FD) || isa<CXXDestructorDecl>(FD))
  F->setUnnamedAddr(llvm::GlobalValue::UnnamedAddr::Global);
else if (const auto *MD = dyn_cast<CXXMethodDecl>(FD))
  if (MD->isVirtual())
    F->setUnnamedAddr(llvm::GlobalValue::UnnamedAddr::Global);

// Don't emit entries for function declarations in the cross-DSO mode. This
// is handled with better precision by the receiving DSO. But if jump tables
// are non-canonical then we need type metadata in order to produce the local
// jump table.
if (!CodeGenOpts.SanitizeCfiCrossDso ||
    !CodeGenOpts.SanitizeCfiCanonicalJumpTables)
  CreateFunctionTypeMetadataForIcall(FD, F);

if (getLangOpts().OpenMP && FD->hasAttr<OMPDeclareSimdDeclAttr>())
  getOpenMPRuntime().emitDeclareSimdFunction(FD, F);

if (const auto *CB = FD->getAttr<CallbackAttr>()) {
  // Annotate the callback behavior as metadata:
  //  - The callback callee (as argument number).
  //  - The callback payloads (as argument numbers).
  llvm::LLVMContext &Ctx = F->getContext();
  llvm::MDBuilder MDB(Ctx);

  // The payload indices are all but the first one in the encoding. The first
  // identifies the callback callee.
  int CalleeIdx = *CB->encoding_begin();
  ArrayRef<int> PayloadIndices(CB->encoding_begin() + 1, CB->encoding_end());
  F->addMetadata(llvm::LLVMContext::MD_callback,
                 *llvm::MDNode::get(Ctx, {MDB.createCallbackEncoding(
                                             CalleeIdx, PayloadIndices,
                                             /* VarArgsArePassed */ false)}));
}
2191}

2193void CodeGenModule::addUsedGlobal(llvm::GlobalValue *GV) {
assert((isa<llvm::Function>(GV) || !GV->isDeclaration()) &&(static_cast <bool> ((isa<llvm::Function>(GV) || !
GV->isDeclaration()) && "Only globals with definition can force usage."
) ? void (0) : __assert_fail ("(isa<llvm::Function>(GV) || !GV->isDeclaration()) && \"Only globals with definition can force usage.\""
, "/build/llvm-toolchain-snapshot-13~++20210726100616+dead50d4427c/clang/lib/CodeGen/CodeGenModule.cpp"
, 2195, __extension__ __PRETTY_FUNCTION__))
       "Only globals with definition can force usage.")(static_cast <bool> ((isa<llvm::Function>(GV) || !
GV->isDeclaration()) && "Only globals with definition can force usage."
) ? void (0) : __assert_fail ("(isa<llvm::Function>(GV) || !GV->isDeclaration()) && \"Only globals with definition can force usage.\""
, "/build/llvm-toolchain-snapshot-13~++20210726100616+dead50d4427c/clang/lib/CodeGen/CodeGenModule.cpp"
, 2195, __extension__ __PRETTY_FUNCTION__));
LLVMUsed.emplace_back(GV);
2197}

2199void CodeGenModule::addCompilerUsedGlobal(llvm::GlobalValue *GV) {
assert(!GV->isDeclaration() &&(static_cast <bool> (!GV->isDeclaration() &&
 "Only globals with definition can force usage.") ? void (0) :
 __assert_fail ("!GV->isDeclaration() && \"Only globals with definition can force usage.\""
, "/build/llvm-toolchain-snapshot-13~++20210726100616+dead50d4427c/clang/lib/CodeGen/CodeGenModule.cpp"
, 2201, __extension__ __PRETTY_FUNCTION__))
       "Only globals with definition can force usage.")(static_cast <bool> (!GV->isDeclaration() &&
 "Only globals with definition can force usage.") ? void (0) :
 __assert_fail ("!GV->isDeclaration() && \"Only globals with definition can force usage.\""
, "/build/llvm-toolchain-snapshot-13~++20210726100616+dead50d4427c/clang/lib/CodeGen/CodeGenModule.cpp"
, 2201, __extension__ __PRETTY_FUNCTION__));
LLVMCompilerUsed.emplace_back(GV);
2203}

2205void CodeGenModule::addUsedOrCompilerUsedGlobal(llvm::GlobalValue *GV) {
assert((isa<llvm::Function>(GV) || !GV->isDeclaration()) &&(static_cast <bool> ((isa<llvm::Function>(GV) || !
GV->isDeclaration()) && "Only globals with definition can force usage."
) ? void (0) : __assert_fail ("(isa<llvm::Function>(GV) || !GV->isDeclaration()) && \"Only globals with definition can force usage.\""
, "/build/llvm-toolchain-snapshot-13~++20210726100616+dead50d4427c/clang/lib/CodeGen/CodeGenModule.cpp"
, 2207, __extension__ __PRETTY_FUNCTION__))
       "Only globals with definition can force usage.")(static_cast <bool> ((isa<llvm::Function>(GV) || !
GV->isDeclaration()) && "Only globals with definition can force usage."
) ? void (0) : __assert_fail ("(isa<llvm::Function>(GV) || !GV->isDeclaration()) && \"Only globals with definition can force usage.\""
, "/build/llvm-toolchain-snapshot-13~++20210726100616+dead50d4427c/clang/lib/CodeGen/CodeGenModule.cpp"
, 2207, __extension__ __PRETTY_FUNCTION__));
if (getTriple().isOSBinFormatELF())
  LLVMCompilerUsed.emplace_back(GV);
else
  LLVMUsed.emplace_back(GV);
2212}

2214static void emitUsed(CodeGenModule &CGM, StringRef Name,
                   std::vector<llvm::WeakTrackingVH> &List) {
// Don't create llvm.used if there is no need.
if (List.empty())
  return;

// Convert List to what ConstantArray needs.
SmallVector<llvm::Constant*, 8> UsedArray;
UsedArray.resize(List.size());
for (unsigned i = 0, e = List.size(); i != e; ++i) {
  UsedArray[i] =
      llvm::ConstantExpr::getPointerBitCastOrAddrSpaceCast(
          cast<llvm::Constant>(&*List[i]), CGM.Int8PtrTy);
}

if (UsedArray.empty())
  return;
llvm::ArrayType *ATy = llvm::ArrayType::get(CGM.Int8PtrTy, UsedArray.size());

auto *GV = new llvm::GlobalVariable(
    CGM.getModule(), ATy, false, llvm::GlobalValue::AppendingLinkage,
    llvm::ConstantArray::get(ATy, UsedArray), Name);

GV->setSection("llvm.metadata");
2238}

2240void CodeGenModule::emitLLVMUsed() {
emitUsed(*this, "llvm.used", LLVMUsed);
emitUsed(*this, "llvm.compiler.used", LLVMCompilerUsed);
2243}

2245void CodeGenModule::AppendLinkerOptions(StringRef Opts) {
auto *MDOpts = llvm::MDString::get(getLLVMContext(), Opts);
LinkerOptionsMetadata.push_back(llvm::MDNode::get(getLLVMContext(), MDOpts));
2248}

2250void CodeGenModule::AddDetectMismatch(StringRef Name, StringRef Value) {
llvm::SmallString<32> Opt;
getTargetCodeGenInfo().getDetectMismatchOption(Name, Value, Opt);
if (Opt.empty())
  return;
auto *MDOpts = llvm::MDString::get(getLLVMContext(), Opt);
LinkerOptionsMetadata.push_back(llvm::MDNode::get(getLLVMContext(), MDOpts));
2257}

2259void CodeGenModule::AddDependentLib(StringRef Lib) {
auto &C = getLLVMContext();
if (getTarget().getTriple().isOSBinFormatELF()) {
    ELFDependentLibraries.push_back(
      llvm::MDNode::get(C, llvm::MDString::get(C, Lib)));
  return;
}

llvm::SmallString<24> Opt;
getTargetCodeGenInfo().getDependentLibraryOption(Lib, Opt);
auto *MDOpts = llvm::MDString::get(getLLVMContext(), Opt);
LinkerOptionsMetadata.push_back(llvm::MDNode::get(C, MDOpts));
2271}

2273/// Add link options implied by the given module, including modules
2274/// it depends on, using a postorder walk.
2275static void addLinkOptionsPostorder(CodeGenModule &CGM, Module *Mod,
                                  SmallVectorImpl<llvm::MDNode *> &Metadata,
                                  llvm::SmallPtrSet<Module *, 16> &Visited) {
// Import this module's parent.
if (Mod->Parent && Visited.insert(Mod->Parent).second) {
  addLinkOptionsPostorder(CGM, Mod->Parent, Metadata, Visited);
}

// Import this module's dependencies.
for (unsigned I = Mod->Imports.size(); I > 0; --I) {
  if (Visited.insert(Mod->Imports[I - 1]).second)
    addLinkOptionsPostorder(CGM, Mod->Imports[I-1], Metadata, Visited);
}

// Add linker options to link against the libraries/frameworks
// described by this module.
llvm::LLVMContext &Context = CGM.getLLVMContext();
bool IsELF = CGM.getTarget().getTriple().isOSBinFormatELF();

// For modules that use export_as for linking, use that module
// name instead.
if (Mod->UseExportAsModuleLinkName)
  return;

for (unsigned I = Mod->LinkLibraries.size(); I > 0; --I) {
  // Link against a framework.  Frameworks are currently Darwin only, so we
  // don't to ask TargetCodeGenInfo for the spelling of the linker option.
  if (Mod->LinkLibraries[I-1].IsFramework) {
    llvm::Metadata *Args[2] = {
        llvm::MDString::get(Context, "-framework"),
        llvm::MDString::get(Context, Mod->LinkLibraries[I - 1].Library)};

    Metadata.push_back(llvm::MDNode::get(Context, Args));
    continue;
  }

  // Link against a library.
  if (IsELF) {
    llvm::Metadata *Args[2] = {
        llvm::MDString::get(Context, "lib"),
        llvm::MDString::get(Context, Mod->LinkLibraries[I - 1].Library),
    };
    Metadata.push_back(llvm::MDNode::get(Context, Args));
  } else {
    llvm::SmallString<24> Opt;
    CGM.getTargetCodeGenInfo().getDependentLibraryOption(
        Mod->LinkLibraries[I - 1].Library, Opt);
    auto *OptString = llvm::MDString::get(Context, Opt);
    Metadata.push_back(llvm::MDNode::get(Context, OptString));
  }
}
2326}

2328void CodeGenModule::EmitModuleLinkOptions() {
// Collect the set of all of the modules we want to visit to emit link
// options, which is essentially the imported modules and all of their
// non-explicit child modules.
llvm::SetVector<clang::Module *> LinkModules;
llvm::SmallPtrSet<clang::Module *, 16> Visited;
SmallVector<clang::Module *, 16> Stack;

// Seed the stack with imported modules.
for (Module *M : ImportedModules) {
  // Do not add any link flags when an implementation TU of a module imports
  // a header of that same module.
  if (M->getTopLevelModuleName() == getLangOpts().CurrentModule &&
      !getLangOpts().isCompilingModule())
    continue;
  if (Visited.insert(M).second)
    Stack.push_back(M);
}

// Find all of the modules to import, making a little effort to prune
// non-leaf modules.
while (!Stack.empty()) {
  clang::Module *Mod = Stack.pop_back_val();

  bool AnyChildren = false;

  // Visit the submodules of this module.
  for (const auto &SM : Mod->submodules()) {
    // Skip explicit children; they need to be explicitly imported to be
    // linked against.
    if (SM->IsExplicit)
      continue;

    if (Visited.insert(SM).second) {
      Stack.push_back(SM);
      AnyChildren = true;
    }
  }

  // We didn't find any children, so add this module to the list of
  // modules to link against.
  if (!AnyChildren) {
    LinkModules.insert(Mod);
  }
}

// Add link options for all of the imported modules in reverse topological
// order.  We don't do anything to try to order import link flags with respect
// to linker options inserted by things like #pragma comment().
SmallVector<llvm::MDNode *, 16> MetadataArgs;
Visited.clear();
for (Module *M : LinkModules)
  if (Visited.insert(M).second)
    addLinkOptionsPostorder(*this, M, MetadataArgs, Visited);
std::reverse(MetadataArgs.begin(), MetadataArgs.end());
LinkerOptionsMetadata.append(MetadataArgs.begin(), MetadataArgs.end());

// Add the linker options metadata flag.
auto *NMD = getModule().getOrInsertNamedMetadata("llvm.linker.options");
for (auto *MD : LinkerOptionsMetadata)
  NMD->addOperand(MD);
2389}

2391void CodeGenModule::EmitDeferred() {
// Emit deferred declare target declarations.
if (getLangOpts().OpenMP && !getLangOpts().OpenMPSimd)
  getOpenMPRuntime().emitDeferredTargetDecls();

// Emit code for any potentially referenced deferred decls.  Since a
// previously unused static decl may become used during the generation of code
// for a static function, iterate until no changes are made.

if (!DeferredVTables.empty()) {
  EmitDeferredVTables();

  // Emitting a vtable doesn't directly cause more vtables to
  // become deferred, although it can cause functions to be
  // emitted that then need those vtables.
  assert(DeferredVTables.empty())(static_cast <bool> (DeferredVTables.empty()) ? void (0
) : __assert_fail ("DeferredVTables.empty()", "/build/llvm-toolchain-snapshot-13~++20210726100616+dead50d4427c/clang/lib/CodeGen/CodeGenModule.cpp"
, 2406, __extension__ __PRETTY_FUNCTION__));
}

// Emit CUDA/HIP static device variables referenced by host code only.
// Note we should not clear CUDADeviceVarODRUsedByHost since it is still
// needed for further handling.
if (getLangOpts().CUDA && getLangOpts().CUDAIsDevice)
  for (const auto *V : getContext().CUDADeviceVarODRUsedByHost)
    DeferredDeclsToEmit.push_back(V);

// Stop if we're out of both deferred vtables and deferred declarations.
if (DeferredDeclsToEmit.empty())
  return;

// Grab the list of decls to emit. If EmitGlobalDefinition schedules more
// work, it will not interfere with this.
std::vector<GlobalDecl> CurDeclsToEmit;
CurDeclsToEmit.swap(DeferredDeclsToEmit);

for (GlobalDecl &D : CurDeclsToEmit) {
  // We should call GetAddrOfGlobal with IsForDefinition set to true in order
  // to get GlobalValue with exactly the type we need, not something that
  // might had been created for another decl with the same mangled name but
  // different type.
  llvm::GlobalValue *GV = dyn_cast<llvm::GlobalValue>(
      GetAddrOfGlobal(D, ForDefinition));

  // In case of different address spaces, we may still get a cast, even with
  // IsForDefinition equal to true. Query mangled names table to get
  // GlobalValue.
  if (!GV)
    GV = GetGlobalValue(getMangledName(D));

  // Make sure GetGlobalValue returned non-null.
  assert(GV)(static_cast <bool> (GV) ? void (0) : __assert_fail ("GV"
, "/build/llvm-toolchain-snapshot-13~++20210726100616+dead50d4427c/clang/lib/CodeGen/CodeGenModule.cpp"
, 2440, __extension__ __PRETTY_FUNCTION__));

  // Check to see if we've already emitted this.  This is necessary
  // for a couple of reasons: first, decls can end up in the
  // deferred-decls queue multiple times, and second, decls can end
  // up with definitions in unusual ways (e.g. by an extern inline
  // function acquiring a strong function redefinition).  Just
  // ignore these cases.
  if (!GV->isDeclaration())
    continue;

  // If this is OpenMP, check if it is legal to emit this global normally.
  if (LangOpts.OpenMP && OpenMPRuntime && OpenMPRuntime->emitTargetGlobal(D))
    continue;

  // Otherwise, emit the definition and move on to the next one.
  EmitGlobalDefinition(D, GV);

  // If we found out that we need to emit more decls, do that recursively.
  // This has the advantage that the decls are emitted in a DFS and related
  // ones are close together, which is convenient for testing.
  if (!DeferredVTables.empty() || !DeferredDeclsToEmit.empty()) {
    EmitDeferred();
    assert(DeferredVTables.empty() && DeferredDeclsToEmit.empty())(static_cast <bool> (DeferredVTables.empty() &&
 DeferredDeclsToEmit.empty()) ? void (0) : __assert_fail ("DeferredVTables.empty() && DeferredDeclsToEmit.empty()"
, "/build/llvm-toolchain-snapshot-13~++20210726100616+dead50d4427c/clang/lib/CodeGen/CodeGenModule.cpp"
, 2463, __extension__ __PRETTY_FUNCTION__));
  }
}
2466}

2468void CodeGenModule::EmitVTablesOpportunistically() {
// Try to emit external vtables as available_externally if they have emitted
// all inlined virtual functions.  It runs after EmitDeferred() and therefore
// is not allowed to create new references to things that need to be emitted
// lazily. Note that it also uses fact that we eagerly emitting RTTI.

assert((OpportunisticVTables.empty() || shouldOpportunisticallyEmitVTables())(static_cast <bool> ((OpportunisticVTables.empty() || shouldOpportunisticallyEmitVTables
()) && "Only emit opportunistic vtables with optimizations"
) ? void (0) : __assert_fail ("(OpportunisticVTables.empty() || shouldOpportunisticallyEmitVTables()) && \"Only emit opportunistic vtables with optimizations\""
, "/build/llvm-toolchain-snapshot-13~++20210726100616+dead50d4427c/clang/lib/CodeGen/CodeGenModule.cpp"
, 2475, __extension__ __PRETTY_FUNCTION__))
       && "Only emit opportunistic vtables with optimizations")(static_cast <bool> ((OpportunisticVTables.empty() || shouldOpportunisticallyEmitVTables
()) && "Only emit opportunistic vtables with optimizations"
) ? void (0) : __assert_fail ("(OpportunisticVTables.empty() || shouldOpportunisticallyEmitVTables()) && \"Only emit opportunistic vtables with optimizations\""
, "/build/llvm-toolchain-snapshot-13~++20210726100616+dead50d4427c/clang/lib/CodeGen/CodeGenModule.cpp"
, 2475, __extension__ __PRETTY_FUNCTION__));

for (const CXXRecordDecl *RD : OpportunisticVTables) {
  assert(getVTables().isVTableExternal(RD) &&(static_cast <bool> (getVTables().isVTableExternal(RD) &&
 "This queue should only contain external vtables") ? void (0
) : __assert_fail ("getVTables().isVTableExternal(RD) && \"This queue should only contain external vtables\""
, "/build/llvm-toolchain-snapshot-13~++20210726100616+dead50d4427c/clang/lib/CodeGen/CodeGenModule.cpp"
, 2479, __extension__ __PRETTY_FUNCTION__))
         "This queue should only contain external vtables")(static_cast <bool> (getVTables().isVTableExternal(RD) &&
 "This queue should only contain external vtables") ? void (0
) : __assert_fail ("getVTables().isVTableExternal(RD) && \"This queue should only contain external vtables\""
, "/build/llvm-toolchain-snapshot-13~++20210726100616+dead50d4427c/clang/lib/CodeGen/CodeGenModule.cpp"
, 2479, __extension__ __PRETTY_FUNCTION__));
  if (getCXXABI().canSpeculativelyEmitVTable(RD))
    VTables.GenerateClassData(RD);
}
OpportunisticVTables.clear();
2484}

2486void CodeGenModule::EmitGlobalAnnotations() {
if (Annotations.empty())
  return;

// Create a new global variable for the ConstantStruct in the Module.
llvm::Constant *Array = llvm::ConstantArray::get(llvm::ArrayType::get(
  Annotations[0]->getType(), Annotations.size()), Annotations);
auto *gv = new llvm::GlobalVariable(getModule(), Array->getType(), false,
                                    llvm::GlobalValue::AppendingLinkage,
                                    Array, "llvm.global.annotations");
gv->setSection(AnnotationSection);
2497}

2499llvm::Constant *CodeGenModule::EmitAnnotationString(StringRef Str) {
llvm::Constant *&AStr = AnnotationStrings[Str];
if (AStr)
  return AStr;

// Not found yet, create a new global.
llvm::Constant *s = llvm::ConstantDataArray::getString(getLLVMContext(), Str);
auto *gv =
    new llvm::GlobalVariable(getModule(), s->getType(), true,
                             llvm::GlobalValue::PrivateLinkage, s, ".str");
gv->setSection(AnnotationSection);
gv->setUnnamedAddr(llvm::GlobalValue::UnnamedAddr::Global);
AStr = gv;
return gv;
2513}

2515llvm::Constant *CodeGenModule::EmitAnnotationUnit(SourceLocation Loc) {
SourceManager &SM = getContext().getSourceManager();
PresumedLoc PLoc = SM.getPresumedLoc(Loc);
if (PLoc.isValid())
  return EmitAnnotationString(PLoc.getFilename());
return EmitAnnotationString(SM.getBufferName(Loc));
2521}

2523llvm::Constant *CodeGenModule::EmitAnnotationLineNo(SourceLocation L) {
SourceManager &SM = getContext().getSourceManager();
PresumedLoc PLoc = SM.getPresumedLoc(L);
unsigned LineNo = PLoc.isValid() ? PLoc.getLine() :
  SM.getExpansionLineNumber(L);
return llvm::ConstantInt::get(Int32Ty, LineNo);
2529}

2531llvm::Constant *CodeGenModule::EmitAnnotationArgs(const AnnotateAttr *Attr) {
ArrayRef<Expr *> Exprs = {Attr->args_begin(), Attr->args_size()};
if (Exprs.empty())
  return llvm::ConstantPointerNull::get(Int8PtrTy);

llvm::FoldingSetNodeID ID;
for (Expr *E : Exprs) {
  ID.Add(cast<clang::ConstantExpr>(E)->getAPValueResult());
}
llvm::Constant *&Lookup = AnnotationArgs[ID.ComputeHash()];
if (Lookup)
  return Lookup;

llvm::SmallVector<llvm::Constant *, 4> LLVMArgs;
LLVMArgs.reserve(Exprs.size());
ConstantEmitter ConstEmiter(*this);
llvm::transform(Exprs, std::back_inserter(LLVMArgs), [&](const Expr *E) {
  const auto *CE = cast<clang::ConstantExpr>(E);
  return ConstEmiter.emitAbstract(CE->getBeginLoc(), CE->getAPValueResult(),
                                  CE->getType());
});
auto *Struct = llvm::ConstantStruct::getAnon(LLVMArgs);
auto *GV = new llvm::GlobalVariable(getModule(), Struct->getType(), true,
                                    llvm::GlobalValue::PrivateLinkage, Struct,
                                    ".args");
GV->setSection(AnnotationSection);
GV->setUnnamedAddr(llvm::GlobalValue::UnnamedAddr::Global);
auto *Bitcasted = llvm::ConstantExpr::getBitCast(GV, Int8PtrTy);

Lookup = Bitcasted;
return Bitcasted;
2562}

2564llvm::Constant *CodeGenModule::EmitAnnotateAttr(llvm::GlobalValue *GV,
                                              const AnnotateAttr *AA,
                                              SourceLocation L) {
// Get the globals for file name, annotation, and the line number.
llvm::Constant *AnnoGV = EmitAnnotationString(AA->getAnnotation()),
               *UnitGV = EmitAnnotationUnit(L),
               *LineNoCst = EmitAnnotationLineNo(L),
               *Args = EmitAnnotationArgs(AA);

llvm::Constant *ASZeroGV = GV;
if (GV->getAddressSpace() != 0) {
  ASZeroGV = llvm::ConstantExpr::getAddrSpaceCast(
                 GV, GV->getValueType()->getPointerTo(0));
}

// Create the ConstantStruct for the global annotation.
llvm::Constant *Fields[] = {
    llvm::ConstantExpr::getBitCast(ASZeroGV, Int8PtrTy),
    llvm::ConstantExpr::getBitCast(AnnoGV, Int8PtrTy),
    llvm::ConstantExpr::getBitCast(UnitGV, Int8PtrTy),
    LineNoCst,
    Args,
};
return llvm::ConstantStruct::getAnon(Fields);
2588}

2590void CodeGenModule::AddGlobalAnnotations(const ValueDecl *D,
                                       llvm::GlobalValue *GV) {
assert(D->hasAttr<AnnotateAttr>() && "no annotate attribute")(static_cast <bool> (D->hasAttr<AnnotateAttr>(
) && "no annotate attribute") ? void (0) : __assert_fail
 ("D->hasAttr<AnnotateAttr>() && \"no annotate attribute\""
, "/build/llvm-toolchain-snapshot-13~++20210726100616+dead50d4427c/clang/lib/CodeGen/CodeGenModule.cpp"
, 2592, __extension__ __PRETTY_FUNCTION__));
// Get the struct elements for these annotations.
for (const auto *I : D->specific_attrs<AnnotateAttr>())
  Annotations.push_back(EmitAnnotateAttr(GV, I, D->getLocation()));
2596}

2598bool CodeGenModule::isInNoSanitizeList(SanitizerMask Kind, llvm::Function *Fn,
                                     SourceLocation Loc) const {
const auto &NoSanitizeL = getContext().getNoSanitizeList();
// NoSanitize by function name.
if (NoSanitizeL.containsFunction(Kind, Fn->getName()))
  return true;
// NoSanitize by location.
if (Loc.isValid())
  return NoSanitizeL.containsLocation(Kind, Loc);
// If location is unknown, this may be a compiler-generated function. Assume
// it's located in the main file.
auto &SM = Context.getSourceManager();
if (const auto *MainFile = SM.getFileEntryForID(SM.getMainFileID())) {
  return NoSanitizeL.containsFile(Kind, MainFile->getName());
}
return false;
2614}

2616bool CodeGenModule::isInNoSanitizeList(llvm::GlobalVariable *GV,
                                     SourceLocation Loc, QualType Ty,
                                     StringRef Category) const {
// For now globals can be ignored only in ASan and KASan.
const SanitizerMask EnabledAsanMask =
    LangOpts.Sanitize.Mask &
    (SanitizerKind::Address | SanitizerKind::KernelAddress |
     SanitizerKind::HWAddress | SanitizerKind::KernelHWAddress |
     SanitizerKind::MemTag);
if (!EnabledAsanMask)
  return false;
const auto &NoSanitizeL = getContext().getNoSanitizeList();
if (NoSanitizeL.containsGlobal(EnabledAsanMask, GV->getName(), Category))
  return true;
if (NoSanitizeL.containsLocation(EnabledAsanMask, Loc, Category))
  return true;
// Check global type.
if (!Ty.isNull()) {
  // Drill down the array types: if global variable of a fixed type is
  // not sanitized, we also don't instrument arrays of them.
  while (auto AT = dyn_cast<ArrayType>(Ty.getTypePtr()))
    Ty = AT->getElementType();
  Ty = Ty.getCanonicalType().getUnqualifiedType();
  // Only record types (classes, structs etc.) are ignored.
  if (Ty->isRecordType()) {
    std::string TypeStr = Ty.getAsString(getContext().getPrintingPolicy());
    if (NoSanitizeL.containsType(EnabledAsanMask, TypeStr, Category))
      return true;
  }
}
return false;
2647}

2649bool CodeGenModule::imbueXRayAttrs(llvm::Function *Fn, SourceLocation Loc,
                                 StringRef Category) const {
const auto &XRayFilter = getContext().getXRayFilter();
using ImbueAttr = XRayFunctionFilter::ImbueAttribute;
auto Attr = ImbueAttr::NONE;
if (Loc.isValid())
  Attr = XRayFilter.shouldImbueLocation(Loc, Category);
if (Attr == ImbueAttr::NONE)
  Attr = XRayFilter.shouldImbueFunction(Fn->getName());
switch (Attr) {
case ImbueAttr::NONE:
  return false;
case ImbueAttr::ALWAYS:
  Fn->addFnAttr("function-instrument", "xray-always");
  break;
case ImbueAttr::ALWAYS_ARG1:
  Fn->addFnAttr("function-instrument", "xray-always");
  Fn->addFnAttr("xray-log-args", "1");
  break;
case ImbueAttr::NEVER:
  Fn->addFnAttr("function-instrument", "xray-never");
  break;
}
return true;
2673}

2675bool CodeGenModule::isProfileInstrExcluded(llvm::Function *Fn,
                                         SourceLocation Loc) const {
const auto &ProfileList = getContext().getProfileList();
// If the profile list is empty, then instrument everything.
if (ProfileList.isEmpty())
  return false;
CodeGenOptions::ProfileInstrKind Kind = getCodeGenOpts().getProfileInstr();
// First, check the function name.
Optional<bool> V = ProfileList.isFunctionExcluded(Fn->getName(), Kind);
if (V.hasValue())
  return *V;
// Next, check the source location.
if (Loc.isValid()) {
  Optional<bool> V = ProfileList.isLocationExcluded(Loc, Kind);
  if (V.hasValue())
    return *V;
}
// If location is unknown, this may be a compiler-generated function. Assume
// it's located in the main file.
auto &SM = Context.getSourceManager();
if (const auto *MainFile = SM.getFileEntryForID(SM.getMainFileID())) {
  Optional<bool> V = ProfileList.isFileExcluded(MainFile->getName(), Kind);
  if (V.hasValue())
    return *V;
}
return ProfileList.getDefault();
2701}

2703bool CodeGenModule::MustBeEmitted(const ValueDecl *Global) {
// Never defer when EmitAllDecls is specified.
if (LangOpts.EmitAllDecls)
  return true;

if (CodeGenOpts.KeepStaticConsts) {
  const auto *VD = dyn_cast<VarDecl>(Global);
  if (VD && VD->getType().isConstQualified() &&
      VD->getStorageDuration() == SD_Static)
    return true;
}

return getContext().DeclMustBeEmitted(Global);
2716}

2718bool CodeGenModule::MayBeEmittedEagerly(const ValueDecl *Global) {
// In OpenMP 5.0 variables and function may be marked as
// device_type(host/nohost) and we should not emit them eagerly unless we sure
// that they must be emitted on the host/device. To be sure we need to have
// seen a declare target with an explicit mentioning of the function, we know
// we have if the level of the declare target attribute is -1. Note that we
// check somewhere else if we should emit this at all.
if (LangOpts.OpenMP >= 50 && !LangOpts.OpenMPSimd) {
  llvm::Optional<OMPDeclareTargetDeclAttr *> ActiveAttr =
      OMPDeclareTargetDeclAttr::getActiveAttr(Global);
  if (!ActiveAttr || (*ActiveAttr)->getLevel() != (unsigned)-1)
    return false;
}

if (const auto *FD = dyn_cast<FunctionDecl>(Global)) {
  if (FD->getTemplateSpecializationKind() == TSK_ImplicitInstantiation)
    // Implicit template instantiations may change linkage if they are later
    // explicitly instantiated, so they should not be emitted eagerly.
    return false;
}
if (const auto *VD = dyn_cast<VarDecl>(Global))
  if (Context.getInlineVariableDefinitionKind(VD) ==
      ASTContext::InlineVariableDefinitionKind::WeakUnknown)
    // A definition of an inline constexpr static data member may change
    // linkage later if it's redeclared outside the class.
    return false;
// If OpenMP is enabled and threadprivates must be generated like TLS, delay
// codegen for global variables, because they may be marked as threadprivate.
if (LangOpts.OpenMP && LangOpts.OpenMPUseTLS &&
    getContext().getTargetInfo().isTLSSupported() && isa<VarDecl>(Global) &&
    !isTypeConstant(Global->getType(), false) &&
    !OMPDeclareTargetDeclAttr::isDeclareTargetDeclaration(Global))
  return false;

return true;
2753}

2755ConstantAddress CodeGenModule::GetAddrOfMSGuidDecl(const MSGuidDecl *GD) {
StringRef Name = getMangledName(GD);

// The UUID descriptor should be pointer aligned.
CharUnits Alignment = CharUnits::fromQuantity(PointerAlignInBytes);

// Look for an existing global.
if (llvm::GlobalVariable *GV = getModule().getNamedGlobal(Name))
  return ConstantAddress(GV, Alignment);

ConstantEmitter Emitter(*this);
llvm::Constant *Init;

APValue &V = GD->getAsAPValue();
if (!V.isAbsent()) {
  // If possible, emit the APValue version of the initializer. In particular,
  // this gets the type of the constant right.
  Init = Emitter.emitForInitializer(
      GD->getAsAPValue(), GD->getType().getAddressSpace(), GD->getType());
} else {
  // As a fallback, directly construct the constant.
  // FIXME: This may get padding wrong under esoteric struct layout rules.
  // MSVC appears to create a complete type 'struct __s_GUID' that it
  // presumably uses to represent these constants.
  MSGuidDecl::Parts Parts = GD->getParts();
  llvm::Constant *Fields[4] = {
      llvm::ConstantInt::get(Int32Ty, Parts.Part1),
      llvm::ConstantInt::get(Int16Ty, Parts.Part2),
      llvm::ConstantInt::get(Int16Ty, Parts.Part3),
      llvm::ConstantDataArray::getRaw(
          StringRef(reinterpret_cast<char *>(Parts.Part4And5), 8), 8,
          Int8Ty)};
  Init = llvm::ConstantStruct::getAnon(Fields);
}

auto *GV = new llvm::GlobalVariable(
    getModule(), Init->getType(),
    /*isConstant=*/true, llvm::GlobalValue::LinkOnceODRLinkage, Init, Name);
if (supportsCOMDAT())
  GV->setComdat(TheModule.getOrInsertComdat(GV->getName()));
setDSOLocal(GV);

llvm::Constant *Addr = GV;
if (!V.isAbsent()) {
  Emitter.finalize(GV);
} else {
  llvm::Type *Ty = getTypes().ConvertTypeForMem(GD->getType());
  Addr = llvm::ConstantExpr::getBitCast(
      GV, Ty->getPointerTo(GV->getAddressSpace()));
}
return ConstantAddress(Addr, Alignment);
2806}

2808ConstantAddress CodeGenModule::GetAddrOfTemplateParamObject(
  const TemplateParamObjectDecl *TPO) {
StringRef Name = getMangledName(TPO);
CharUnits Alignment = getNaturalTypeAlignment(TPO->getType());

if (llvm::GlobalVariable *GV = getModule().getNamedGlobal(Name))
  return ConstantAddress(GV, Alignment);

ConstantEmitter Emitter(*this);
llvm::Constant *Init = Emitter.emitForInitializer(
      TPO->getValue(), TPO->getType().getAddressSpace(), TPO->getType());

if (!Init) {
  ErrorUnsupported(TPO, "template parameter object");
  return ConstantAddress::invalid();
}

auto *GV = new llvm::GlobalVariable(
    getModule(), Init->getType(),
    /*isConstant=*/true, llvm::GlobalValue::LinkOnceODRLinkage, Init, Name);
if (supportsCOMDAT())
  GV->setComdat(TheModule.getOrInsertComdat(GV->getName()));
Emitter.finalize(GV);

return ConstantAddress(GV, Alignment);
2833}

2835ConstantAddress CodeGenModule::GetWeakRefReference(const ValueDecl *VD) {
const AliasAttr *AA = VD->getAttr<AliasAttr>();
assert(AA && "No alias?")(static_cast <bool> (AA && "No alias?") ? void (
0) : __assert_fail ("AA && \"No alias?\"", "/build/llvm-toolchain-snapshot-13~++20210726100616+dead50d4427c/clang/lib/CodeGen/CodeGenModule.cpp"
, 2837, __extension__ __PRETTY_FUNCTION__));
1
Assuming 'AA' is non-null→
2
←
'?' condition is true→

CharUnits Alignment = getContext().getDeclAlign(VD);
llvm::Type *DeclTy = getTypes().ConvertTypeForMem(VD->getType());

// See if there is already something with the target's name in the module.
llvm::GlobalValue *Entry = GetGlobalValue(AA->getAliasee());
if (Entry) {
3
←
Assuming 'Entry' is null→
4
←
Taking false branch→
  unsigned AS = getContext().getTargetAddressSpace(VD->getType());
  auto Ptr = llvm::ConstantExpr::getBitCast(Entry, DeclTy->getPointerTo(AS));
  return ConstantAddress(Ptr, Alignment);
}

llvm::Constant *Aliasee;
if (isa<llvm::FunctionType>(DeclTy))
5
←
Assuming 'DeclTy' is a 'FunctionType'→
6
←
Taking true branch→
  Aliasee = GetOrCreateLLVMFunction(AA->getAliasee(), DeclTy,
8
←
Calling 'CodeGenModule::GetOrCreateLLVMFunction'→
                                    GlobalDecl(cast<FunctionDecl>(VD)),
7
←
'VD' is a 'FunctionDecl'→
                                    /*ForVTable=*/false);
else
  Aliasee = GetOrCreateLLVMGlobal(AA->getAliasee(), DeclTy, 0, nullptr);

auto *F = cast<llvm::GlobalValue>(Aliasee);
F->setLinkage(llvm::Function::ExternalWeakLinkage);
WeakRefReferences.insert(F);

return ConstantAddress(Aliasee, Alignment);
2863}

2865void CodeGenModule::EmitGlobal(GlobalDecl GD) {
const auto *Global = cast<ValueDecl>(GD.getDecl());
22
←
The object is a 'ValueDecl'→

// Weak references don't produce any output by themselves.
if (Global->hasAttr<WeakRefAttr>())
23
←
Taking false branch→
  return;

// If this is an alias definition (which otherwise looks like a declaration)
// emit it now.
if (Global->hasAttr<AliasAttr>())
24
←
Taking false branch→
  return EmitAliasDefinition(GD);

// IFunc like an alias whose value is resolved at runtime by calling resolver.
if (Global->hasAttr<IFuncAttr>())
25
←
Taking false branch→
  return emitIFuncDefinition(GD);

// If this is a cpu_dispatch multiversion function, emit the resolver.
if (Global->hasAttr<CPUDispatchAttr>())
26
←
Taking true branch→
  return emitCPUDispatchDefinition(GD);
27
←
Calling 'CodeGenModule::emitCPUDispatchDefinition'→

// If this is CUDA, be selective about which declarations we emit.
if (LangOpts.CUDA) {
  if (LangOpts.CUDAIsDevice) {
    if (!Global->hasAttr<CUDADeviceAttr>() &&
        !Global->hasAttr<CUDAGlobalAttr>() &&
        !Global->hasAttr<CUDAConstantAttr>() &&
        !Global->hasAttr<CUDASharedAttr>() &&
        !Global->getType()->isCUDADeviceBuiltinSurfaceType() &&
        !Global->getType()->isCUDADeviceBuiltinTextureType())
      return;
  } else {
    // We need to emit host-side 'shadows' for all global
    // device-side variables because the CUDA runtime needs their
    // size and host-side address in order to provide access to
    // their device-side incarnations.

    // So device-only functions are the only things we skip.
    if (isa<FunctionDecl>(Global) && !Global->hasAttr<CUDAHostAttr>() &&
        Global->hasAttr<CUDADeviceAttr>())
      return;

    assert((isa<FunctionDecl>(Global) || isa<VarDecl>(Global)) &&(static_cast <bool> ((isa<FunctionDecl>(Global) ||
 isa<VarDecl>(Global)) && "Expected Variable or Function"
) ? void (0) : __assert_fail ("(isa<FunctionDecl>(Global) || isa<VarDecl>(Global)) && \"Expected Variable or Function\""
, "/build/llvm-toolchain-snapshot-13~++20210726100616+dead50d4427c/clang/lib/CodeGen/CodeGenModule.cpp"
, 2907, __extension__ __PRETTY_FUNCTION__))
           "Expected Variable or Function")(static_cast <bool> ((isa<FunctionDecl>(Global) ||
 isa<VarDecl>(Global)) && "Expected Variable or Function"
) ? void (0) : __assert_fail ("(isa<FunctionDecl>(Global) || isa<VarDecl>(Global)) && \"Expected Variable or Function\""
, "/build/llvm-toolchain-snapshot-13~++20210726100616+dead50d4427c/clang/lib/CodeGen/CodeGenModule.cpp"
, 2907, __extension__ __PRETTY_FUNCTION__));
  }
}

if (LangOpts.OpenMP) {
  // If this is OpenMP, check if it is legal to emit this global normally.
  if (OpenMPRuntime && OpenMPRuntime->emitTargetGlobal(GD))
    return;
  if (auto *DRD = dyn_cast<OMPDeclareReductionDecl>(Global)) {
    if (MustBeEmitted(Global))
      EmitOMPDeclareReduction(DRD);
    return;
  } else if (auto *DMD = dyn_cast<OMPDeclareMapperDecl>(Global)) {
    if (MustBeEmitted(Global))
      EmitOMPDeclareMapper(DMD);
    return;
  }
}

// Ignore declarations, they will be emitted on their first use.
if (const auto *FD = dyn_cast<FunctionDecl>(Global)) {
  // Forward declarations are emitted lazily on first use.
  if (!FD->doesThisDeclarationHaveABody()) {
    if (!FD->doesDeclarationForceExternallyVisibleDefinition())
      return;

    StringRef MangledName = getMangledName(GD);

    // Compute the function info and LLVM type.
    const CGFunctionInfo &FI = getTypes().arrangeGlobalDeclaration(GD);
    llvm::Type *Ty = getTypes().GetFunctionType(FI);

    GetOrCreateLLVMFunction(MangledName, Ty, GD, /*ForVTable=*/false,
                            /*DontDefer=*/false);
    return;
  }
} else {
  const auto *VD = cast<VarDecl>(Global);
  assert(VD->isFileVarDecl() && "Cannot emit local var decl as global.")(static_cast <bool> (VD->isFileVarDecl() && "Cannot emit local var decl as global."
) ? void (0) : __assert_fail ("VD->isFileVarDecl() && \"Cannot emit local var decl as global.\""
, "/build/llvm-toolchain-snapshot-13~++20210726100616+dead50d4427c/clang/lib/CodeGen/CodeGenModule.cpp"
, 2945, __extension__ __PRETTY_FUNCTION__));
  if (VD->isThisDeclarationADefinition() != VarDecl::Definition &&
      !Context.isMSStaticDataMemberInlineDefinition(VD)) {
    if (LangOpts.OpenMP) {
      // Emit declaration of the must-be-emitted declare target variable.
      if (llvm::Optional<OMPDeclareTargetDeclAttr::MapTypeTy> Res =
              OMPDeclareTargetDeclAttr::isDeclareTargetDeclaration(VD)) {
        bool UnifiedMemoryEnabled =
            getOpenMPRuntime().hasRequiresUnifiedSharedMemory();
        if (*Res == OMPDeclareTargetDeclAttr::MT_To &&
            !UnifiedMemoryEnabled) {
          (void)GetAddrOfGlobalVar(VD);
        } else {
          assert(((*Res == OMPDeclareTargetDeclAttr::MT_Link) ||(static_cast <bool> (((*Res == OMPDeclareTargetDeclAttr
::MT_Link) || (*Res == OMPDeclareTargetDeclAttr::MT_To &&
 UnifiedMemoryEnabled)) && "Link clause or to clause with unified memory expected."
) ? void (0) : __assert_fail ("((*Res == OMPDeclareTargetDeclAttr::MT_Link) || (*Res == OMPDeclareTargetDeclAttr::MT_To && UnifiedMemoryEnabled)) && \"Link clause or to clause with unified memory expected.\""
, "/build/llvm-toolchain-snapshot-13~++20210726100616+dead50d4427c/clang/lib/CodeGen/CodeGenModule.cpp"
, 2961, __extension__ __PRETTY_FUNCTION__))
                  (*Res == OMPDeclareTargetDeclAttr::MT_To &&(static_cast <bool> (((*Res == OMPDeclareTargetDeclAttr
::MT_Link) || (*Res == OMPDeclareTargetDeclAttr::MT_To &&
 UnifiedMemoryEnabled)) && "Link clause or to clause with unified memory expected."
) ? void (0) : __assert_fail ("((*Res == OMPDeclareTargetDeclAttr::MT_Link) || (*Res == OMPDeclareTargetDeclAttr::MT_To && UnifiedMemoryEnabled)) && \"Link clause or to clause with unified memory expected.\""
, "/build/llvm-toolchain-snapshot-13~++20210726100616+dead50d4427c/clang/lib/CodeGen/CodeGenModule.cpp"
, 2961, __extension__ __PRETTY_FUNCTION__))
                   UnifiedMemoryEnabled)) &&(static_cast <bool> (((*Res == OMPDeclareTargetDeclAttr
::MT_Link) || (*Res == OMPDeclareTargetDeclAttr::MT_To &&
 UnifiedMemoryEnabled)) && "Link clause or to clause with unified memory expected."
) ? void (0) : __assert_fail ("((*Res == OMPDeclareTargetDeclAttr::MT_Link) || (*Res == OMPDeclareTargetDeclAttr::MT_To && UnifiedMemoryEnabled)) && \"Link clause or to clause with unified memory expected.\""
, "/build/llvm-toolchain-snapshot-13~++20210726100616+dead50d4427c/clang/lib/CodeGen/CodeGenModule.cpp"
, 2961, __extension__ __PRETTY_FUNCTION__))
                 "Link clause or to clause with unified memory expected.")(static_cast <bool> (((*Res == OMPDeclareTargetDeclAttr
::MT_Link) || (*Res == OMPDeclareTargetDeclAttr::MT_To &&
 UnifiedMemoryEnabled)) && "Link clause or to clause with unified memory expected."
) ? void (0) : __assert_fail ("((*Res == OMPDeclareTargetDeclAttr::MT_Link) || (*Res == OMPDeclareTargetDeclAttr::MT_To && UnifiedMemoryEnabled)) && \"Link clause or to clause with unified memory expected.\""
, "/build/llvm-toolchain-snapshot-13~++20210726100616+dead50d4427c/clang/lib/CodeGen/CodeGenModule.cpp"
, 2961, __extension__ __PRETTY_FUNCTION__));
          (void)getOpenMPRuntime().getAddrOfDeclareTargetVar(VD);
        }

        return;
      }
    }
    // If this declaration may have caused an inline variable definition to
    // change linkage, make sure that it's emitted.
    if (Context.getInlineVariableDefinitionKind(VD) ==
        ASTContext::InlineVariableDefinitionKind::Strong)
      GetAddrOfGlobalVar(VD);
    return;
  }
}

// Defer code generation to first use when possible, e.g. if this is an inline
// function. If the global must always be emitted, do it eagerly if possible
// to benefit from cache locality.
if (MustBeEmitted(Global) && MayBeEmittedEagerly(Global)) {
  // Emit the definition if it can't be deferred.
  EmitGlobalDefinition(GD);
  return;
}

// If we're deferring emission of a C++ variable with an
// initializer, remember the order in which it appeared in the file.
if (getLangOpts().CPlusPlus && isa<VarDecl>(Global) &&
    cast<VarDecl>(Global)->hasInit()) {
  DelayedCXXInitPosition[Global] = CXXGlobalInits.size();
  CXXGlobalInits.push_back(nullptr);
}

StringRef MangledName = getMangledName(GD);
if (GetGlobalValue(MangledName) != nullptr) {
  // The value has already been used and should therefore be emitted.
  addDeferredDeclToEmit(GD);
} else if (MustBeEmitted(Global)) {
  // The value must be emitted, but cannot be emitted eagerly.
  assert(!MayBeEmittedEagerly(Global))(static_cast <bool> (!MayBeEmittedEagerly(Global)) ? void
 (0) : __assert_fail ("!MayBeEmittedEagerly(Global)", "/build/llvm-toolchain-snapshot-13~++20210726100616+dead50d4427c/clang/lib/CodeGen/CodeGenModule.cpp"
, 3000, __extension__ __PRETTY_FUNCTION__));
  addDeferredDeclToEmit(GD);
} else {
  // Otherwise, remember that we saw a deferred decl with this name.  The
  // first use of the mangled name will cause it to move into
  // DeferredDeclsToEmit.
  DeferredDecls[MangledName] = GD;
}
3008}

3010// Check if T is a class type with a destructor that's not dllimport.
3011static bool HasNonDllImportDtor(QualType T) {
if (const auto *RT = T->getBaseElementTypeUnsafe()->getAs<RecordType>())
  if (CXXRecordDecl *RD = dyn_cast<CXXRecordDecl>(RT->getDecl()))
    if (RD->getDestructor() && !RD->getDestructor()->hasAttr<DLLImportAttr>())
      return true;

return false;
3018}

3020namespace {
struct FunctionIsDirectlyRecursive
    : public ConstStmtVisitor<FunctionIsDirectlyRecursive, bool> {
  const StringRef Name;
  const Builtin::Context &BI;
  FunctionIsDirectlyRecursive(StringRef N, const Builtin::Context &C)
      : Name(N), BI(C) {}

  bool VisitCallExpr(const CallExpr *E) {
    const FunctionDecl *FD = E->getDirectCallee();
    if (!FD)
      return false;
    AsmLabelAttr *Attr = FD->getAttr<AsmLabelAttr>();
    if (Attr && Name == Attr->getLabel())
      return true;
    unsigned BuiltinID = FD->getBuiltinID();
    if (!BuiltinID || !BI.isLibFunction(BuiltinID))
      return false;
    StringRef BuiltinName = BI.getName(BuiltinID);
    if (BuiltinName.startswith("__builtin_") &&
        Name == BuiltinName.slice(strlen("__builtin_"), StringRef::npos)) {
      return true;
    }
    return false;
  }

  bool VisitStmt(const Stmt *S) {
    for (const Stmt *Child : S->children())
      if (Child && this->Visit(Child))
        return true;
    return false;
  }
};

// Make sure we're not referencing non-imported vars or functions.
struct DLLImportFunctionVisitor
    : public RecursiveASTVisitor<DLLImportFunctionVisitor> {
  bool SafeToInline = true;

  bool shouldVisitImplicitCode() const { return true; }

  bool VisitVarDecl(VarDecl *VD) {
    if (VD->getTLSKind()) {
      // A thread-local variable cannot be imported.
      SafeToInline = false;
      return SafeToInline;
    }

    // A variable definition might imply a destructor call.
    if (VD->isThisDeclarationADefinition())
      SafeToInline = !HasNonDllImportDtor(VD->getType());

    return SafeToInline;
  }

  bool VisitCXXBindTemporaryExpr(CXXBindTemporaryExpr *E) {
    if (const auto *D = E->getTemporary()->getDestructor())
      SafeToInline = D->hasAttr<DLLImportAttr>();
    return SafeToInline;
  }

  bool VisitDeclRefExpr(DeclRefExpr *E) {
    ValueDecl *VD = E->getDecl();
    if (isa<FunctionDecl>(VD))
      SafeToInline = VD->hasAttr<DLLImportAttr>();
    else if (VarDecl *V = dyn_cast<VarDecl>(VD))
      SafeToInline = !V->hasGlobalStorage() || V->hasAttr<DLLImportAttr>();
    return SafeToInline;
  }

  bool VisitCXXConstructExpr(CXXConstructExpr *E) {
    SafeToInline = E->getConstructor()->hasAttr<DLLImportAttr>();
    return SafeToInline;
  }

  bool VisitCXXMemberCallExpr(CXXMemberCallExpr *E) {
    CXXMethodDecl *M = E->getMethodDecl();
    if (!M) {
      // Call through a pointer to member function. This is safe to inline.
      SafeToInline = true;
    } else {
      SafeToInline = M->hasAttr<DLLImportAttr>();
    }
    return SafeToInline;
  }

  bool VisitCXXDeleteExpr(CXXDeleteExpr *E) {
    SafeToInline = E->getOperatorDelete()->hasAttr<DLLImportAttr>();
    return SafeToInline;
  }

  bool VisitCXXNewExpr(CXXNewExpr *E) {
    SafeToInline = E->getOperatorNew()->hasAttr<DLLImportAttr>();
    return SafeToInline;
  }
};
3116}

3118// isTriviallyRecursive - Check if this function calls another
3119// decl that, because of the asm attribute or the other decl being a builtin,
3120// ends up pointing to itself.
3121bool
3122CodeGenModule::isTriviallyRecursive(const FunctionDecl *FD) {
StringRef Name;
if (getCXXABI().getMangleContext().shouldMangleDeclName(FD)) {
  // asm labels are a special kind of mangling we have to support.
  AsmLabelAttr *Attr = FD->getAttr<AsmLabelAttr>();
  if (!Attr)
    return false;
  Name = Attr->getLabel();
} else {
  Name = FD->getName();
}

FunctionIsDirectlyRecursive Walker(Name, Context.BuiltinInfo);
const Stmt *Body = FD->getBody();
return Body ? Walker.Visit(Body) : false;
3137}

3139bool CodeGenModule::shouldEmitFunction(GlobalDecl GD) {
if (getFunctionLinkage(GD) != llvm::Function::AvailableExternallyLinkage)
  return true;
const auto *F = cast<FunctionDecl>(GD.getDecl());
if (CodeGenOpts.OptimizationLevel == 0 && !F->hasAttr<AlwaysInlineAttr>())
  return false;

if (F->hasAttr<DLLImportAttr>() && !F->hasAttr<AlwaysInlineAttr>()) {
  // Check whether it would be safe to inline this dllimport function.
  DLLImportFunctionVisitor Visitor;
  Visitor.TraverseFunctionDecl(const_cast<FunctionDecl*>(F));
  if (!Visitor.SafeToInline)
    return false;

  if (const CXXDestructorDecl *Dtor = dyn_cast<CXXDestructorDecl>(F)) {
    // Implicit destructor invocations aren't captured in the AST, so the
    // check above can't see them. Check for them manually here.
    for (const Decl *Member : Dtor->getParent()->decls())
      if (isa<FieldDecl>(Member))
        if (HasNonDllImportDtor(cast<FieldDecl>(Member)->getType()))
          return false;
    for (const CXXBaseSpecifier &B : Dtor->getParent()->bases())
      if (HasNonDllImportDtor(B.getType()))
        return false;
  }
}

// PR9614. Avoid cases where the source code is lying to us. An available
// externally function should have an equivalent function somewhere else,
// but a function that calls itself through asm label/`__builtin_` trickery is
// clearly not equivalent to the real implementation.
// This happens in glibc's btowc and in some configure checks.
return !isTriviallyRecursive(F);
3172}

3174bool CodeGenModule::shouldOpportunisticallyEmitVTables() {
return CodeGenOpts.OptimizationLevel > 0;
3176}

3178void CodeGenModule::EmitMultiVersionFunctionDefinition(GlobalDecl GD,
                                                     llvm::GlobalValue *GV) {
const auto *FD = cast<FunctionDecl>(GD.getDecl());

if (FD->isCPUSpecificMultiVersion()) {
  auto *Spec = FD->getAttr<CPUSpecificAttr>();
  for (unsigned I = 0; I < Spec->cpus_size(); ++I)
    EmitGlobalFunctionDefinition(GD.getWithMultiVersionIndex(I), nullptr);
  // Requires multiple emits.
} else
  EmitGlobalFunctionDefinition(GD, GV);
3189}

3191void CodeGenModule::EmitGlobalDefinition(GlobalDecl GD, llvm::GlobalValue *GV) {
const auto *D = cast<ValueDecl>(GD.getDecl());

PrettyStackTraceDecl CrashInfo(const_cast<ValueDecl *>(D), D->getLocation(),
                               Context.getSourceManager(),
                               "Generating code for declaration");

if (const auto *FD = dyn_cast<FunctionDecl>(D)) {
  // At -O0, don't generate IR for functions with available_externally
  // linkage.
  if (!shouldEmitFunction(GD))
    return;

  llvm::TimeTraceScope TimeScope("CodeGen Function", [&]() {
    std::string Name;
    llvm::raw_string_ostream OS(Name);
    FD->getNameForDiagnostic(OS, getContext().getPrintingPolicy(),
                             /*Qualified=*/true);
    return Name;
  });

  if (const auto *Method = dyn_cast<CXXMethodDecl>(D)) {
    // Make sure to emit the definition(s) before we emit the thunks.
    // This is necessary for the generation of certain thunks.
    if (isa<CXXConstructorDecl>(Method) || isa<CXXDestructorDecl>(Method))
      ABI->emitCXXStructor(GD);
    else if (FD->isMultiVersion())
      EmitMultiVersionFunctionDefinition(GD, GV);
    else
      EmitGlobalFunctionDefinition(GD, GV);

    if (Method->isVirtual())
      getVTables().EmitThunks(GD);

    return;
  }

  if (FD->isMultiVersion())
    return EmitMultiVersionFunctionDefinition(GD, GV);
  return EmitGlobalFunctionDefinition(GD, GV);
}

if (const auto *VD = dyn_cast<VarDecl>(D))
  return EmitGlobalVarDefinition(VD, !VD->hasDefinition());

llvm_unreachable("Invalid argument to EmitGlobalDefinition()")::llvm::llvm_unreachable_internal("Invalid argument to EmitGlobalDefinition()"
, "/build/llvm-toolchain-snapshot-13~++20210726100616+dead50d4427c/clang/lib/CodeGen/CodeGenModule.cpp"
, 3236);
3237}

3239static void ReplaceUsesOfNonProtoTypeWithRealFunction(llvm::GlobalValue *Old,
                                                    llvm::Function *NewFn);

3242static unsigned
3243TargetMVPriority(const TargetInfo &TI,
               const CodeGenFunction::MultiVersionResolverOption &RO) {
unsigned Priority = 0;
for (StringRef Feat : RO.Conditions.Features)
  Priority = std::max(Priority, TI.multiVersionSortPriority(Feat));

if (!RO.Conditions.Architecture.empty())
  Priority = std::max(
      Priority, TI.multiVersionSortPriority(RO.Conditions.Architecture));
return Priority;
3253}

3255void CodeGenModule::emitMultiVersionFunctions() {
std::vector<GlobalDecl> MVFuncsToEmit;
MultiVersionFuncs.swap(MVFuncsToEmit);
for (GlobalDecl GD : MVFuncsToEmit) {
  SmallVector<CodeGenFunction::MultiVersionResolverOption, 10> Options;
  const FunctionDecl *FD = cast<FunctionDecl>(GD.getDecl());
  getContext().forEachMultiversionedFunctionVersion(
      FD, [this, &GD, &Options](const FunctionDecl *CurFD) {
        GlobalDecl CurGD{
            (CurFD->isDefined() ? CurFD->getDefinition() : CurFD)};
        StringRef MangledName = getMangledName(CurGD);
        llvm::Constant *Func = GetGlobalValue(MangledName);
        if (!Func) {
          if (CurFD->isDefined()) {
            EmitGlobalFunctionDefinition(CurGD, nullptr);
            Func = GetGlobalValue(MangledName);
          } else {
            const CGFunctionInfo &FI =
                getTypes().arrangeGlobalDeclaration(GD);
            llvm::FunctionType *Ty = getTypes().GetFunctionType(FI);
            Func = GetAddrOfFunction(CurGD, Ty, /*ForVTable=*/false,
                                     /*DontDefer=*/false, ForDefinition);
          }
          assert(Func && "This should have just been created")(static_cast <bool> (Func && "This should have just been created"
) ? void (0) : __assert_fail ("Func && \"This should have just been created\""
, "/build/llvm-toolchain-snapshot-13~++20210726100616+dead50d4427c/clang/lib/CodeGen/CodeGenModule.cpp"
, 3278, __extension__ __PRETTY_FUNCTION__));
        }

        const auto *TA = CurFD->getAttr<TargetAttr>();
        llvm::SmallVector<StringRef, 8> Feats;
        TA->getAddedFeatures(Feats);

        Options.emplace_back(cast<llvm::Function>(Func),
                             TA->getArchitecture(), Feats);
      });

  llvm::Function *ResolverFunc;
  const TargetInfo &TI = getTarget();

  if (TI.supportsIFunc() || FD->isTargetMultiVersion()) {
    ResolverFunc = cast<llvm::Function>(
        GetGlobalValue((getMangledName(GD) + ".resolver").str()));
    ResolverFunc->setLinkage(llvm::Function::WeakODRLinkage);
  } else {
    ResolverFunc = cast<llvm::Function>(GetGlobalValue(getMangledName(GD)));
  }

  if (supportsCOMDAT())
    ResolverFunc->setComdat(
        getModule().getOrInsertComdat(ResolverFunc->getName()));

  llvm::stable_sort(
      Options, [&TI](const CodeGenFunction::MultiVersionResolverOption &LHS,
                     const CodeGenFunction::MultiVersionResolverOption &RHS) {
        return TargetMVPriority(TI, LHS) > TargetMVPriority(TI, RHS);
      });
  CodeGenFunction CGF(*this);
  CGF.EmitMultiVersionResolver(ResolverFunc, Options);
}

// Ensure that any additions to the deferred decls list caused by emitting a
// variant are emitted.  This can happen when the variant itself is inline and
// calls a function without linkage.
if (!MVFuncsToEmit.empty())
  EmitDeferred();

// Ensure that any additions to the multiversion funcs list from either the
// deferred decls or the multiversion functions themselves are emitted.
if (!MultiVersionFuncs.empty())
  emitMultiVersionFunctions();
3323}

3325void CodeGenModule::emitCPUDispatchDefinition(GlobalDecl GD) {
const auto *FD = cast<FunctionDecl>(GD.getDecl());
28
←
The object is a 'FunctionDecl'→
assert(FD && "Not a FunctionDecl?")(static_cast <bool> (FD && "Not a FunctionDecl?"
) ? void (0) : __assert_fail ("FD && \"Not a FunctionDecl?\""
, "/build/llvm-toolchain-snapshot-13~++20210726100616+dead50d4427c/clang/lib/CodeGen/CodeGenModule.cpp"
, 3327, __extension__ __PRETTY_FUNCTION__));
29
←
'?' condition is true→
const auto *DD = FD->getAttr<CPUDispatchAttr>();
assert(DD && "Not a cpu_dispatch Function?")(static_cast <bool> (DD && "Not a cpu_dispatch Function?"
) ? void (0) : __assert_fail ("DD && \"Not a cpu_dispatch Function?\""
, "/build/llvm-toolchain-snapshot-13~++20210726100616+dead50d4427c/clang/lib/CodeGen/CodeGenModule.cpp"
, 3329, __extension__ __PRETTY_FUNCTION__));
30
←
Assuming 'DD' is non-null→
31
←
'?' condition is true→
llvm::Type *DeclTy = getTypes().ConvertType(FD->getType());

if (const auto *CXXFD32.1
'CXXFD' is null
1
'CXXFD' is null
1
'CXXFD' is null
1
'CXXFD' is null
 = dyn_cast<CXXMethodDecl>(FD)) {
32
←
Assuming 'FD' is not a 'CXXMethodDecl'→
33
←
Taking false branch→
  const CGFunctionInfo &FInfo = getTypes().arrangeCXXMethodDeclaration(CXXFD);
  DeclTy = getTypes().GetFunctionType(FInfo);
}

StringRef ResolverName = getMangledName(GD);

llvm::Type *ResolverType;
GlobalDecl ResolverGD;
if (getTarget().supportsIFunc())
34
←
Taking false branch→
  ResolverType = llvm::FunctionType::get(
      llvm::PointerType::get(DeclTy,
                             Context.getTargetAddressSpace(FD->getType())),
      false);
else {
  ResolverType = DeclTy;
  ResolverGD = GD;
}

auto *ResolverFunc = cast<llvm::Function>(GetOrCreateLLVMFunction(
35
←
The object is a 'Function'→
    ResolverName, ResolverType, ResolverGD, /*ForVTable=*/false));
ResolverFunc->setLinkage(llvm::Function::WeakODRLinkage);
if (supportsCOMDAT())
36
←
Assuming the condition is false→
37
←
Taking false branch→
  ResolverFunc->setComdat(
      getModule().getOrInsertComdat(ResolverFunc->getName()));

SmallVector<CodeGenFunction::MultiVersionResolverOption, 10> Options;
const TargetInfo &Target = getTarget();
unsigned Index = 0;
for (const IdentifierInfo *II : DD->cpus()) {
38
←
Assuming '__begin1' is not equal to '__end1'→
  // Get the name of the target function so we can look it up/create it.
  std::string MangledName = getMangledNameImpl(*this, GD, FD, true) +
                            getCPUSpecificMangling(*this, II->getName());

  llvm::Constant *Func = GetGlobalValue(MangledName);

  if (!Func) {
39
←
Assuming 'Func' is null→
40
←
Taking true branch→
    GlobalDecl ExistingDecl = Manglings.lookup(MangledName);
    if (ExistingDecl.getDecl() &&
41
←
Assuming the condition is false→
        ExistingDecl.getDecl()->getAsFunction()->isDefined()) {
      EmitGlobalFunctionDefinition(ExistingDecl, nullptr);
      Func = GetGlobalValue(MangledName);
    } else {
      if (!ExistingDecl.getDecl())
42
←
Assuming the condition is false→
43
←
Taking false branch→
        ExistingDecl = GD.getWithMultiVersionIndex(Index);

    Func = GetOrCreateLLVMFunction(
44
←
Calling 'CodeGenModule::GetOrCreateLLVMFunction'→
        MangledName, DeclTy, ExistingDecl,
        /*ForVTable=*/false, /*DontDefer=*/true,
        /*IsThunk=*/false, llvm::AttributeList(), ForDefinition);
    }
  }

  llvm::SmallVector<StringRef, 32> Features;
  Target.getCPUSpecificCPUDispatchFeatures(II->getName(), Features);
  llvm::transform(Features, Features.begin(),
                  [](StringRef Str) { return Str.substr(1); });
  Features.erase(std::remove_if(
      Features.begin(), Features.end(), [&Target](StringRef Feat) {
        return !Target.validateCpuSupports(Feat);
      }), Features.end());
  Options.emplace_back(cast<llvm::Function>(Func), StringRef{}, Features);
  ++Index;
}

llvm::stable_sort(
    Options, [](const CodeGenFunction::MultiVersionResolverOption &LHS,
                const CodeGenFunction::MultiVersionResolverOption &RHS) {
      return CodeGenFunction::GetX86CpuSupportsMask(LHS.Conditions.Features) >
             CodeGenFunction::GetX86CpuSupportsMask(RHS.Conditions.Features);
    });

// If the list contains multiple 'default' versions, such as when it contains
// 'pentium' and 'generic', don't emit the call to the generic one (since we
// always run on at least a 'pentium'). We do this by deleting the 'least
// advanced' (read, lowest mangling letter).
while (Options.size() > 1 &&
       CodeGenFunction::GetX86CpuSupportsMask(
           (Options.end() - 2)->Conditions.Features) == 0) {
  StringRef LHSName = (Options.end() - 2)->Function->getName();
  StringRef RHSName = (Options.end() - 1)->Function->getName();
  if (LHSName.compare(RHSName) < 0)
    Options.erase(Options.end() - 2);
  else
    Options.erase(Options.end() - 1);
}

CodeGenFunction CGF(*this);
CGF.EmitMultiVersionResolver(ResolverFunc, Options);

if (getTarget().supportsIFunc()) {
  std::string AliasName = getMangledNameImpl(
      *this, GD, FD, /*OmitMultiVersionMangling=*/true);
  llvm::Constant *AliasFunc = GetGlobalValue(AliasName);
  if (!AliasFunc) {
    auto *IFunc = cast<llvm::GlobalIFunc>(GetOrCreateLLVMFunction(
        AliasName, DeclTy, GD, /*ForVTable=*/false, /*DontDefer=*/true,
        /*IsThunk=*/false, llvm::AttributeList(), NotForDefinition));
    auto *GA = llvm::GlobalAlias::create(
       DeclTy, 0, getFunctionLinkage(GD), AliasName, IFunc, &getModule());
    GA->setLinkage(llvm::Function::WeakODRLinkage);
    SetCommonAttributes(GD, GA);
  }
}
3436}

3438/// If a dispatcher for the specified mangled name is not in the module, create
3439/// and return an llvm Function with the specified type.
3440llvm::Constant *CodeGenModule::GetOrCreateMultiVersionResolver(
  GlobalDecl GD, llvm::Type *DeclTy, const FunctionDecl *FD) {
std::string MangledName =
    getMangledNameImpl(*this, GD, FD, /*OmitMultiVersionMangling=*/true);

// Holds the name of the resolver, in ifunc mode this is the ifunc (which has
// a separate resolver).
std::string ResolverName = MangledName;
if (getTarget().supportsIFunc())
  ResolverName += ".ifunc";
else if (FD->isTargetMultiVersion())
  ResolverName += ".resolver";

// If this already exists, just return that one.
if (llvm::GlobalValue *ResolverGV = GetGlobalValue(ResolverName))
  return ResolverGV;

// Since this is the first time we've created this IFunc, make sure
// that we put this multiversioned function into the list to be
// replaced later if necessary (target multiversioning only).
if (!FD->isCPUDispatchMultiVersion() && !FD->isCPUSpecificMultiVersion())
  MultiVersionFuncs.push_back(GD);

if (getTarget().supportsIFunc()) {
  llvm::Type *ResolverType = llvm::FunctionType::get(
      llvm::PointerType::get(
          DeclTy, getContext().getTargetAddressSpace(FD->getType())),
      false);
  llvm::Constant *Resolver = GetOrCreateLLVMFunction(
      MangledName + ".resolver", ResolverType, GlobalDecl{},
      /*ForVTable=*/false);
  llvm::GlobalIFunc *GIF = llvm::GlobalIFunc::create(
      DeclTy, 0, llvm::Function::WeakODRLinkage, "", Resolver, &getModule());
  GIF->setName(ResolverName);
  SetCommonAttributes(FD, GIF);

  return GIF;
}

llvm::Constant *Resolver = GetOrCreateLLVMFunction(
    ResolverName, DeclTy, GlobalDecl{}, /*ForVTable=*/false);
assert(isa<llvm::GlobalValue>(Resolver) &&(static_cast <bool> (isa<llvm::GlobalValue>(Resolver
) && "Resolver should be created for the first time")
 ? void (0) : __assert_fail ("isa<llvm::GlobalValue>(Resolver) && \"Resolver should be created for the first time\""
, "/build/llvm-toolchain-snapshot-13~++20210726100616+dead50d4427c/clang/lib/CodeGen/CodeGenModule.cpp"
, 3482, __extension__ __PRETTY_FUNCTION__))
       "Resolver should be created for the first time")(static_cast <bool> (isa<llvm::GlobalValue>(Resolver
) && "Resolver should be created for the first time")
 ? void (0) : __assert_fail ("isa<llvm::GlobalValue>(Resolver) && \"Resolver should be created for the first time\""
, "/build/llvm-toolchain-snapshot-13~++20210726100616+dead50d4427c/clang/lib/CodeGen/CodeGenModule.cpp"
, 3482, __extension__ __PRETTY_FUNCTION__));
SetCommonAttributes(FD, cast<llvm::GlobalValue>(Resolver));
return Resolver;
3485}

3487/// GetOrCreateLLVMFunction - If the specified mangled name is not in the
3488/// module, create and return an llvm Function with the specified type. If there
3489/// is something in the module with the specified name, return it potentially
3490/// bitcasted to the right type.
3491///
3492/// If D is non-null, it specifies a decl that correspond to this.  This is used
3493/// to set the attributes on the function when it is first created.
3494llvm::Constant *CodeGenModule::GetOrCreateLLVMFunction(
  StringRef MangledName, llvm::Type *Ty, GlobalDecl GD, bool ForVTable,
  bool DontDefer, bool IsThunk, llvm::AttributeList ExtraAttrs,
  ForDefinition_t IsForDefinition) {
const Decl *D = GD.getDecl();
45
←
Calling 'GlobalDecl::getDecl'→
57
←
Returning from 'GlobalDecl::getDecl'→
58
←
'D' initialized here→

// Any attempts to use a MultiVersion function should result in retrieving
// the iFunc instead. Name Mangling will handle the rest of the changes.
if (const FunctionDecl *FD9.1
'FD' is non-null
1
'FD' is null
1
'FD' is non-null
1
'FD' is null
1
'FD' is non-null
1
'FD' is null
1
'FD' is non-null
1
'FD' is null
 = cast_or_null<FunctionDecl>(D)) {
9
←
Assuming 'D' is a 'FunctionDecl'→
10
←
Taking true branch→
59
←
Assuming null pointer is passed into cast→
60
←
Assuming pointer value is null→
61
←
Taking false branch→
  // For the device mark the function as one that should be emitted.
  if (getLangOpts().OpenMPIsDevice && OpenMPRuntime &&
11
←
Assuming field 'OpenMPIsDevice' is not equal to 0→
14
←
Taking true branch→
      !OpenMPRuntime->markAsGlobalTarget(GD) && FD->isDefined() &&
12
←
Assuming the condition is true→
13
←
Assuming the condition is true→
      !DontDefer13.1
'DontDefer' is false
1
'DontDefer' is false
1
'DontDefer' is false
1
'DontDefer' is false
 && !IsForDefinition13.2
'IsForDefinition' is 0
2
'IsForDefinition' is 0
2
'IsForDefinition' is 0
2
'IsForDefinition' is 0
) {
    if (const FunctionDecl *FDDef = FD->getDefinition()) {
15
←
Assuming 'FDDef' is non-null→
16
←
Taking true branch→
      GlobalDecl GDDef;
      if (const auto *CD17.1
'CD' is null
1
'CD' is null
1
'CD' is null
1
'CD' is null
 = dyn_cast<CXXConstructorDecl>(FDDef))
17
←
Assuming 'FDDef' is not a 'CXXConstructorDecl'→
18
←
Taking false branch→
        GDDef = GlobalDecl(CD, GD.getCtorType());
      else if (const auto *DD19.1
'DD' is null
1
'DD' is null
1
'DD' is null
1
'DD' is null
 = dyn_cast<CXXDestructorDecl>(FDDef))
19
←
Assuming 'FDDef' is not a 'CXXDestructorDecl'→
20
←
Taking false branch→
        GDDef = GlobalDecl(DD, GD.getDtorType());
      else
        GDDef = GlobalDecl(FDDef);
      EmitGlobal(GDDef);
21
←
Calling 'CodeGenModule::EmitGlobal'→
    }
  }

  if (FD->isMultiVersion()) {
    if (FD->hasAttr<TargetAttr>())
      UpdateMultiVersionNames(GD, FD);
    if (!IsForDefinition)
      return GetOrCreateMultiVersionResolver(GD, Ty, FD);
  }
}

// Lookup the entry, lazily creating it if necessary.
llvm::GlobalValue *Entry = GetGlobalValue(MangledName);
if (Entry) {
62
←
Assuming 'Entry' is non-null→
63
←
Taking true branch→
  if (WeakRefReferences.erase(Entry)) {
64
←
Assuming the condition is false→
65
←
Taking false branch→
    const FunctionDecl *FD = cast_or_null<FunctionDecl>(D);
    if (FD && !FD->hasAttr<WeakAttr>())
      Entry->setLinkage(llvm::Function::ExternalLinkage);
  }

  // Handle dropped DLL attributes.
  if (D65.1
'D' is null
1
'D' is null
1
'D' is null
1
'D' is null
 && !D->hasAttr<DLLImportAttr>() && !D->hasAttr<DLLExportAttr>()) {
    Entry->setDLLStorageClass(llvm::GlobalValue::DefaultStorageClass);
    setDSOLocal(Entry);
  }

  // If there are two attempts to define the same mangled name, issue an
  // error.
  if (IsForDefinition65.2
'IsForDefinition' is 1
2
'IsForDefinition' is 1
2
'IsForDefinition' is 1
2
'IsForDefinition' is 1
 && !Entry->isDeclaration()) {
66
←
Assuming the condition is true→
67
←
Taking true branch→
    GlobalDecl OtherGD;
    // Check that GD is not yet in DiagnosedConflictingDefinitions is required
    // to make sure that we issue an error only once.
    if (lookupRepresentativeDecl(MangledName, OtherGD) &&
68
←
Assuming the condition is true→
70
←
Assuming the condition is true→
71
←
Taking true branch→
        (GD.getCanonicalDecl().getDecl() !=
69
←
Assuming the condition is true→
         OtherGD.getCanonicalDecl().getDecl()) &&
        DiagnosedConflictingDefinitions.insert(GD).second) {
      getDiags().Report(D->getLocation(), diag::err_duplicate_mangled_name)
72
←
Called C++ object pointer is null
          << MangledName;
      getDiags().Report(OtherGD.getDecl()->getLocation(),
                        diag::note_previous_definition);
    }
  }

  if ((isa<llvm::Function>(Entry) || isa<llvm::GlobalAlias>(Entry)) &&
      (Entry->getValueType() == Ty)) {
    return Entry;
  }

  // Make sure the result is of the correct type.
  // (If function is requested for a definition, we always need to create a new
  // function, not just return a bitcast.)
  if (!IsForDefinition)
    return llvm::ConstantExpr::getBitCast(Entry, Ty->getPointerTo());
}

// This function doesn't have a complete type (for example, the return
// type is an incomplete struct). Use a fake type instead, and make
// sure not to try to set attributes.
bool IsIncompleteFunction = false;

llvm::FunctionType *FTy;
if (isa<llvm::FunctionType>(Ty)) {
  FTy = cast<llvm::FunctionType>(Ty);
} else {
  FTy = llvm::FunctionType::get(VoidTy, false);
  IsIncompleteFunction = true;
}

llvm::Function *F =
    llvm::Function::Create(FTy, llvm::Function::ExternalLinkage,
                           Entry ? StringRef() : MangledName, &getModule());

// If we already created a function with the same mangled name (but different
// type) before, take its name and add it to the list of functions to be
// replaced with F at the end of CodeGen.
//
// This happens if there is a prototype for a function (e.g. "int f()") and
// then a definition of a different type (e.g. "int f(int x)").
if (Entry) {
  F->takeName(Entry);

  // This might be an implementation of a function without a prototype, in
  // which case, try to do special replacement of calls which match the new
  // prototype.  The really key thing here is that we also potentially drop
  // arguments from the call site so as to make a direct call, which makes the
  // inliner happier and suppresses a number of optimizer warnings (!) about
  // dropping arguments.
  if (!Entry->use_empty()) {
    ReplaceUsesOfNonProtoTypeWithRealFunction(Entry, F);
    Entry->removeDeadConstantUsers();
  }

  llvm::Constant *BC = llvm::ConstantExpr::getBitCast(
      F, Entry->getValueType()->getPointerTo());
  addGlobalValReplacement(Entry, BC);
}

assert(F->getName() == MangledName && "name was uniqued!")(static_cast <bool> (F->getName() == MangledName &&
 "name was uniqued!") ? void (0) : __assert_fail ("F->getName() == MangledName && \"name was uniqued!\""
, "/build/llvm-toolchain-snapshot-13~++20210726100616+dead50d4427c/clang/lib/CodeGen/CodeGenModule.cpp"
, 3613, __extension__ __PRETTY_FUNCTION__));
if (D)
  SetFunctionAttributes(GD, F, IsIncompleteFunction, IsThunk);
if (ExtraAttrs.hasAttributes(llvm::AttributeList::FunctionIndex)) {
  llvm::AttrBuilder B(ExtraAttrs, llvm::AttributeList::FunctionIndex);
  F->addAttributes(llvm::AttributeList::FunctionIndex, B);
}

if (!DontDefer) {
  // All MSVC dtors other than the base dtor are linkonce_odr and delegate to
  // each other bottoming out with the base dtor.  Therefore we emit non-base
  // dtors on usage, even if there is no dtor definition in the TU.
  if (D && isa<CXXDestructorDecl>(D) &&
      getCXXABI().useThunkForDtorVariant(cast<CXXDestructorDecl>(D),
                                         GD.getDtorType()))
    addDeferredDeclToEmit(GD);

  // This is the first use or definition of a mangled name.  If there is a
  // deferred decl with this name, remember that we need to emit it at the end
  // of the file.
  auto DDI = DeferredDecls.find(MangledName);
  if (DDI != DeferredDecls.end()) {
    // Move the potentially referenced deferred decl to the
    // DeferredDeclsToEmit list, and remove it from DeferredDecls (since we
    // don't need it anymore).
    addDeferredDeclToEmit(DDI->second);
    DeferredDecls.erase(DDI);

    // Otherwise, there are cases we have to worry about where we're
    // using a declaration for which we must emit a definition but where
    // we might not find a top-level definition:
    //   - member functions defined inline in their classes
    //   - friend functions defined inline in some class
    //   - special member functions with implicit definitions
    // If we ever change our AST traversal to walk into class methods,
    // this will be unnecessary.
    //
    // We also don't emit a definition for a function if it's going to be an
    // entry in a vtable, unless it's already marked as used.
  } else if (getLangOpts().CPlusPlus && D) {
    // Look for a declaration that's lexically in a record.
    for (const auto *FD = cast<FunctionDecl>(D)->getMostRecentDecl(); FD;
         FD = FD->getPreviousDecl()) {
      if (isa<CXXRecordDecl>(FD->getLexicalDeclContext())) {
        if (FD->doesThisDeclarationHaveABody()) {
          addDeferredDeclToEmit(GD.getWithDecl(FD));
          break;
        }
      }
    }
  }
}

// Make sure the result is of the requested type.
if (!IsIncompleteFunction) {
  assert(F->getFunctionType() == Ty)(static_cast <bool> (F->getFunctionType() == Ty) ? void
 (0) : __assert_fail ("F->getFunctionType() == Ty", "/build/llvm-toolchain-snapshot-13~++20210726100616+dead50d4427c/clang/lib/CodeGen/CodeGenModule.cpp"
, 3668, __extension__ __PRETTY_FUNCTION__));
  return F;
}

llvm::Type *PTy = llvm::PointerType::getUnqual(Ty);
return llvm::ConstantExpr::getBitCast(F, PTy);
3674}

3676/// GetAddrOfFunction - Return the address of the given function.  If Ty is
3677/// non-null, then this function will use the specified type if it has to
3678/// create it (this occurs when we see a definition of the function).
3679llvm::Constant *CodeGenModule::GetAddrOfFunction(GlobalDecl GD,
                                               llvm::Type *Ty,
                                               bool ForVTable,
                                               bool DontDefer,
                                            ForDefinition_t IsForDefinition) {
assert(!cast<FunctionDecl>(GD.getDecl())->isConsteval() &&(static_cast <bool> (!cast<FunctionDecl>(GD.getDecl
())->isConsteval() && "consteval function should never be emitted"
) ? void (0) : __assert_fail ("!cast<FunctionDecl>(GD.getDecl())->isConsteval() && \"consteval function should never be emitted\""
, "/build/llvm-toolchain-snapshot-13~++20210726100616+dead50d4427c/clang/lib/CodeGen/CodeGenModule.cpp"
, 3685, __extension__ __PRETTY_FUNCTION__))
       "consteval function should never be emitted")(static_cast <bool> (!cast<FunctionDecl>(GD.getDecl
())->isConsteval() && "consteval function should never be emitted"
) ? void (0) : __assert_fail ("!cast<FunctionDecl>(GD.getDecl())->isConsteval() && \"consteval function should never be emitted\""
, "/build/llvm-toolchain-snapshot-13~++20210726100616+dead50d4427c/clang/lib/CodeGen/CodeGenModule.cpp"
, 3685, __extension__ __PRETTY_FUNCTION__));
// If there was no specific requested type, just convert it now.
if (!Ty) {
  const auto *FD = cast<FunctionDecl>(GD.getDecl());
  Ty = getTypes().ConvertType(FD->getType());
}

// Devirtualized destructor calls may come through here instead of via
// getAddrOfCXXStructor. Make sure we use the MS ABI base destructor instead
// of the complete destructor when necessary.
if (const auto *DD = dyn_cast<CXXDestructorDecl>(GD.getDecl())) {
  if (getTarget().getCXXABI().isMicrosoft() &&
      GD.getDtorType() == Dtor_Complete &&
      DD->getParent()->getNumVBases() == 0)
    GD = GlobalDecl(DD, Dtor_Base);
}

StringRef MangledName = getMangledName(GD);
auto *F = GetOrCreateLLVMFunction(MangledName, Ty, GD, ForVTable, DontDefer,
                                  /*IsThunk=*/false, llvm::AttributeList(),
                                  IsForDefinition);
// Returns kernel handle for HIP kernel stub function.
if (LangOpts.CUDA && !LangOpts.CUDAIsDevice &&
    cast<FunctionDecl>(GD.getDecl())->hasAttr<CUDAGlobalAttr>()) {
  auto *Handle = getCUDARuntime().getKernelHandle(
      cast<llvm::Function>(F->stripPointerCasts()), GD);
  if (IsForDefinition)
    return F;
  return llvm::ConstantExpr::getBitCast(Handle, Ty->getPointerTo());
}
return F;
3716}

3718static const FunctionDecl *
3719GetRuntimeFunctionDecl(ASTContext &C, StringRef Name) {
TranslationUnitDecl *TUDecl = C.getTranslationUnitDecl();
DeclContext *DC = TranslationUnitDecl::castToDeclContext(TUDecl);

IdentifierInfo &CII = C.Idents.get(Name);
for (const auto *Result : DC->lookup(&CII))
  if (const auto *FD = dyn_cast<FunctionDecl>(Result))
    return FD;

if (!C.getLangOpts().CPlusPlus)
  return nullptr;

// Demangle the premangled name from getTerminateFn()
IdentifierInfo &CXXII =
    (Name == "_ZSt9terminatev" || Name == "?terminate@@YAXXZ")
        ? C.Idents.get("terminate")
        : C.Idents.get(Name);

for (const auto &N : {"__cxxabiv1", "std"}) {
  IdentifierInfo &NS = C.Idents.get(N);
  for (const auto *Result : DC->lookup(&NS)) {
    const NamespaceDecl *ND = dyn_cast<NamespaceDecl>(Result);
    if (auto *LSD = dyn_cast<LinkageSpecDecl>(Result))
      for (const auto *Result : LSD->lookup(&NS))
        if ((ND = dyn_cast<NamespaceDecl>(Result)))
          break;

    if (ND)
      for (const auto *Result : ND->lookup(&CXXII))
        if (const auto *FD = dyn_cast<FunctionDecl>(Result))
          return FD;
  }
}

return nullptr;
3754}

3756/// CreateRuntimeFunction - Create a new runtime function with the specified
3757/// type and name.
3758llvm::FunctionCallee
3759CodeGenModule::CreateRuntimeFunction(llvm::FunctionType *FTy, StringRef Name,
                                   llvm::AttributeList ExtraAttrs, bool Local,
                                   bool AssumeConvergent) {
if (AssumeConvergent) {
  ExtraAttrs =
      ExtraAttrs.addAttribute(VMContext, llvm::AttributeList::FunctionIndex,
                              llvm::Attribute::Convergent);
}

llvm::Constant *C =
    GetOrCreateLLVMFunction(Name, FTy, GlobalDecl(), /*ForVTable=*/false,
                            /*DontDefer=*/false, /*IsThunk=*/false,
                            ExtraAttrs);

if (auto *F = dyn_cast<llvm::Function>(C)) {
  if (F->empty()) {
    F->setCallingConv(getRuntimeCC());

    // In Windows Itanium environments, try to mark runtime functions
    // dllimport. For Mingw and MSVC, don't. We don't really know if the user
    // will link their standard library statically or dynamically. Marking
    // functions imported when they are not imported can cause linker errors
    // and warnings.
    if (!Local && getTriple().isWindowsItaniumEnvironment() &&
        !getCodeGenOpts().LTOVisibilityPublicStd) {
      const FunctionDecl *FD = GetRuntimeFunctionDecl(Context, Name);
      if (!FD || FD->hasAttr<DLLImportAttr>()) {
        F->setDLLStorageClass(llvm::GlobalValue::DLLImportStorageClass);
        F->setLinkage(llvm::GlobalValue::ExternalLinkage);
      }
    }
    setDSOLocal(F);
  }
}

return {FTy, C};
3795}

3797/// isTypeConstant - Determine whether an object of this type can be emitted
3798/// as a constant.
3799///
3800/// If ExcludeCtor is true, the duration when the object's constructor runs
3801/// will not be considered. The caller will need to verify that the object is
3802/// not written to during its construction.
3803bool CodeGenModule::isTypeConstant(QualType Ty, bool ExcludeCtor) {
if (!Ty.isConstant(Context) && !Ty->isReferenceType())
  return false;

if (Context.getLangOpts().CPlusPlus) {
  if (const CXXRecordDecl *Record
        = Context.getBaseElementType(Ty)->getAsCXXRecordDecl())
    return ExcludeCtor && !Record->hasMutableFields() &&
           Record->hasTrivialDestructor();
}

return true;
3815}

3817/// GetOrCreateLLVMGlobal - If the specified mangled name is not in the module,
3818/// create and return an llvm GlobalVariable with the specified type and address
3819/// space. If there is something in the module with the specified name, return
3820/// it potentially bitcasted to the right type.
3821///
3822/// If D is non-null, it specifies a decl that correspond to this.  This is used
3823/// to set the attributes on the global when it is first created.
3824///
3825/// If IsForDefinition is true, it is guaranteed that an actual global with
3826/// type Ty will be returned, not conversion of a variable with the same
3827/// mangled name but some other type.
3828llvm::Constant *
3829CodeGenModule::GetOrCreateLLVMGlobal(StringRef MangledName, llvm::Type *Ty,
                                   unsigned AddrSpace, const VarDecl *D,
                                   ForDefinition_t IsForDefinition) {
// Lookup the entry, lazily creating it if necessary.
llvm::GlobalValue *Entry = GetGlobalValue(MangledName);
if (Entry) {
  if (WeakRefReferences.erase(Entry)) {
    if (D && !D->hasAttr<WeakAttr>())
      Entry->setLinkage(llvm::Function::ExternalLinkage);
  }

  // Handle dropped DLL attributes.
  if (D && !D->hasAttr<DLLImportAttr>() && !D->hasAttr<DLLExportAttr>())
    Entry->setDLLStorageClass(llvm::GlobalValue::DefaultStorageClass);

  if (LangOpts.OpenMP && !LangOpts.OpenMPSimd && D)
    getOpenMPRuntime().registerTargetGlobalVariable(D, Entry);

  if (Entry->getValueType() == Ty && Entry->getAddressSpace() == AddrSpace)
    return Entry;

  // If there are two attempts to define the same mangled name, issue an
  // error.
  if (IsForDefinition && !Entry->isDeclaration()) {
    GlobalDecl OtherGD;
    const VarDecl *OtherD;

    // Check that D is not yet in DiagnosedConflictingDefinitions is required
    // to make sure that we issue an error only once.
    if (D && lookupRepresentativeDecl(MangledName, OtherGD) &&
        (D->getCanonicalDecl() != OtherGD.getCanonicalDecl().getDecl()) &&
        (OtherD = dyn_cast<VarDecl>(OtherGD.getDecl())) &&
        OtherD->hasInit() &&
        DiagnosedConflictingDefinitions.insert(D).second) {
      getDiags().Report(D->getLocation(), diag::err_duplicate_mangled_name)
          << MangledName;
      getDiags().Report(OtherGD.getDecl()->getLocation(),
                        diag::note_previous_definition);
    }
  }

  // Make sure the result is of the correct type.
  if (Entry->getType()->getAddressSpace() != AddrSpace) {
    return llvm::ConstantExpr::getAddrSpaceCast(Entry,
                                                Ty->getPointerTo(AddrSpace));
  }

  // (If global is requested for a definition, we always need to create a new
  // global, not just return a bitcast.)
  if (!IsForDefinition)
    return llvm::ConstantExpr::getBitCast(Entry, Ty->getPointerTo(AddrSpace));
}

auto DAddrSpace = GetGlobalVarAddressSpace(D);
auto TargetAddrSpace = getContext().getTargetAddressSpace(DAddrSpace);

auto *GV = new llvm::GlobalVariable(
    getModule(), Ty, false, llvm::GlobalValue::ExternalLinkage, nullptr,
    MangledName, nullptr, llvm::GlobalVariable::NotThreadLocal,
    TargetAddrSpace);

// If we already created a global with the same mangled name (but different
// type) before, take its name and remove it from its parent.
if (Entry) {
  GV->takeName(Entry);

  if (!Entry->use_empty()) {
    llvm::Constant *NewPtrForOldDecl =
        llvm::ConstantExpr::getBitCast(GV, Entry->getType());
    Entry->replaceAllUsesWith(NewPtrForOldDecl);
  }

  Entry->eraseFromParent();
}

// This is the first use or definition of a mangled name.  If there is a
// deferred decl with this name, remember that we need to emit it at the end
// of the file.
auto DDI = DeferredDecls.find(MangledName);
if (DDI != DeferredDecls.end()) {
  // Move the potentially referenced deferred decl to the DeferredDeclsToEmit
  // list, and remove it from DeferredDecls (since we don't need it anymore).
  addDeferredDeclToEmit(DDI->second);
  DeferredDecls.erase(DDI);
}

// Handle things which are present even on external declarations.
if (D) {
  if (LangOpts.OpenMP && !LangOpts.OpenMPSimd)
    getOpenMPRuntime().registerTargetGlobalVariable(D, GV);

  // FIXME: This code is overly simple and should be merged with other global
  // handling.
  GV->setConstant(isTypeConstant(D->getType(), false));

  GV->setAlignment(getContext().getDeclAlign(D).getAsAlign());

  setLinkageForGV(GV, D);

  if (D->getTLSKind()) {
    if (D->getTLSKind() == VarDecl::TLS_Dynamic)
      CXXThreadLocals.push_back(D);
    setTLSMode(GV, *D);
  }

  setGVProperties(GV, D);

  // If required by the ABI, treat declarations of static data members with
  // inline initializers as definitions.
  if (getContext().isMSStaticDataMemberInlineDefinition(D)) {
    EmitGlobalVarDefinition(D);
  }

  // Emit section information for extern variables.
  if (D->hasExternalStorage()) {
    if (const SectionAttr *SA = D->getAttr<SectionAttr>())
      GV->setSection(SA->getName());
  }

  // Handle XCore specific ABI requirements.
  if (getTriple().getArch() == llvm::Triple::xcore &&
      D->getLanguageLinkage() == CLanguageLinkage &&
      D->getType().isConstant(Context) &&
      isExternallyVisible(D->getLinkageAndVisibility().getLinkage()))
    GV->setSection(".cp.rodata");

  // Check if we a have a const declaration with an initializer, we may be
  // able to emit it as available_externally to expose it's value to the
  // optimizer.
  if (Context.getLangOpts().CPlusPlus && GV->hasExternalLinkage() &&
      D->getType().isConstQualified() && !GV->hasInitializer() &&
      !D->hasDefinition() && D->hasInit() && !D->hasAttr<DLLImportAttr>()) {
    const auto *Record =
        Context.getBaseElementType(D->getType())->getAsCXXRecordDecl();
    bool HasMutableFields = Record && Record->hasMutableFields();
    if (!HasMutableFields) {
      const VarDecl *InitDecl;
      const Expr *InitExpr = D->getAnyInitializer(InitDecl);
      if (InitExpr) {
        ConstantEmitter emitter(*this);
        llvm::Constant *Init = emitter.tryEmitForInitializer(*InitDecl);
        if (Init) {
          auto *InitType = Init->getType();
          if (GV->getValueType() != InitType) {
            // The type of the initializer does not match the definition.
            // This happens when an initializer has a different type from
            // the type of the global (because of padding at the end of a
            // structure for instance).
            GV->setName(StringRef());
            // Make a new global with the correct type, this is now guaranteed
            // to work.
            auto *NewGV = cast<llvm::GlobalVariable>(
                GetAddrOfGlobalVar(D, InitType, IsForDefinition)
                    ->stripPointerCasts());

            // Erase the old global, since it is no longer used.
            GV->eraseFromParent();
            GV = NewGV;
          } else {
            GV->setInitializer(Init);
            GV->setConstant(true);
            GV->setLinkage(llvm::GlobalValue::AvailableExternallyLinkage);
          }
          emitter.finalize(GV);
        }
      }
    }
  }
}

if (GV->isDeclaration()) {
  getTargetCodeGenInfo().setTargetAttributes(D, GV, *this);
  // External HIP managed variables needed to be recorded for transformation
  // in both device and host compilations.
  if (getLangOpts().CUDA && D && D->hasAttr<HIPManagedAttr>() &&
      D->hasExternalStorage())
    getCUDARuntime().handleVarRegistration(D, *GV);
}

LangAS ExpectedAS =
    D ? D->getType().getAddressSpace()
      : (LangOpts.OpenCL ? LangAS::opencl_global : LangAS::Default);
assert(getContext().getTargetAddressSpace(ExpectedAS) == AddrSpace)(static_cast <bool> (getContext().getTargetAddressSpace
(ExpectedAS) == AddrSpace) ? void (0) : __assert_fail ("getContext().getTargetAddressSpace(ExpectedAS) == AddrSpace"
, "/build/llvm-toolchain-snapshot-13~++20210726100616+dead50d4427c/clang/lib/CodeGen/CodeGenModule.cpp"
, 4011, __extension__ __PRETTY_FUNCTION__));
if (DAddrSpace != ExpectedAS) {
  return getTargetCodeGenInfo().performAddrSpaceCast(
      *this, GV, DAddrSpace, ExpectedAS, Ty->getPointerTo(AddrSpace));
}

return GV;
4018}

4020llvm::Constant *
4021CodeGenModule::GetAddrOfGlobal(GlobalDecl GD, ForDefinition_t IsForDefinition) {
const Decl *D = GD.getDecl();

if (isa<CXXConstructorDecl>(D) || isa<CXXDestructorDecl>(D))
  return getAddrOfCXXStructor(GD, /*FnInfo=*/nullptr, /*FnType=*/nullptr,
                              /*DontDefer=*/false, IsForDefinition);

if (isa<CXXMethodDecl>(D)) {
  auto FInfo =
      &getTypes().arrangeCXXMethodDeclaration(cast<CXXMethodDecl>(D));
  auto Ty = getTypes().GetFunctionType(*FInfo);
  return GetAddrOfFunction(GD, Ty, /*ForVTable=*/false, /*DontDefer=*/false,
                           IsForDefinition);
}

if (isa<FunctionDecl>(D)) {
  const CGFunctionInfo &FI = getTypes().arrangeGlobalDeclaration(GD);
  llvm::FunctionType *Ty = getTypes().GetFunctionType(FI);
  return GetAddrOfFunction(GD, Ty, /*ForVTable=*/false, /*DontDefer=*/false,
                           IsForDefinition);
}

return GetAddrOfGlobalVar(cast<VarDecl>(D), /*Ty=*/nullptr, IsForDefinition);
4044}

4046llvm::GlobalVariable *CodeGenModule::CreateOrReplaceCXXRuntimeVariable(
  StringRef Name, llvm::Type *Ty, llvm::GlobalValue::LinkageTypes Linkage,
  unsigned Alignment) {
llvm::GlobalVariable *GV = getModule().getNamedGlobal(Name);
llvm::GlobalVariable *OldGV = nullptr;

if (GV) {
  // Check if the variable has the right type.
  if (GV->getValueType() == Ty)
    return GV;

  // Because C++ name mangling, the only way we can end up with an already
  // existing global with the same name is if it has been declared extern "C".
  assert(GV->isDeclaration() && "Declaration has wrong type!")(static_cast <bool> (GV->isDeclaration() && "Declaration has wrong type!"
) ? void (0) : __assert_fail ("GV->isDeclaration() && \"Declaration has wrong type!\""
, "/build/llvm-toolchain-snapshot-13~++20210726100616+dead50d4427c/clang/lib/CodeGen/CodeGenModule.cpp"
, 4059, __extension__ __PRETTY_FUNCTION__));
  OldGV = GV;
}

// Create a new variable.
GV = new llvm::GlobalVariable(getModule(), Ty, /*isConstant=*/true,
                              Linkage, nullptr, Name);

if (OldGV) {
  // Replace occurrences of the old variable if needed.
  GV->takeName(OldGV);

  if (!OldGV->use_empty()) {
    llvm::Constant *NewPtrForOldDecl =
    llvm::ConstantExpr::getBitCast(GV, OldGV->getType());
    OldGV->replaceAllUsesWith(NewPtrForOldDecl);
  }

  OldGV->eraseFromParent();
}

if (supportsCOMDAT() && GV->isWeakForLinker() &&
    !GV->hasAvailableExternallyLinkage())
  GV->setComdat(TheModule.getOrInsertComdat(GV->getName()));

GV->setAlignment(llvm::MaybeAlign(Alignment));

return GV;
4087}

4089/// GetAddrOfGlobalVar - Return the llvm::Constant for the address of the
4090/// given global variable.  If Ty is non-null and if the global doesn't exist,
4091/// then it will be created with the specified type instead of whatever the
4092/// normal requested type would be. If IsForDefinition is true, it is guaranteed
4093/// that an actual global with type Ty will be returned, not conversion of a
4094/// variable with the same mangled name but some other type.
4095llvm::Constant *CodeGenModule::GetAddrOfGlobalVar(const VarDecl *D,
                                                llvm::Type *Ty,
                                         ForDefinition_t IsForDefinition) {
assert(D->hasGlobalStorage() && "Not a global variable")(static_cast <bool> (D->hasGlobalStorage() &&
 "Not a global variable") ? void (0) : __assert_fail ("D->hasGlobalStorage() && \"Not a global variable\""
, "/build/llvm-toolchain-snapshot-13~++20210726100616+dead50d4427c/clang/lib/CodeGen/CodeGenModule.cpp"
, 4098, __extension__ __PRETTY_FUNCTION__));
QualType ASTTy = D->getType();
if (!Ty)
  Ty = getTypes().ConvertTypeForMem(ASTTy);

StringRef MangledName = getMangledName(D);
return GetOrCreateLLVMGlobal(MangledName, Ty,
                             getContext().getTargetAddressSpace(ASTTy), D,
                             IsForDefinition);
4107}

4109/// CreateRuntimeVariable - Create a new runtime global variable with the
4110/// specified type and name.
4111llvm::Constant *
4112CodeGenModule::CreateRuntimeVariable(llvm::Type *Ty,
                                   StringRef Name) {
auto AddrSpace =
    getContext().getLangOpts().OpenCL
        ? getContext().getTargetAddressSpace(LangAS::opencl_global)
        : 0;
auto *Ret = GetOrCreateLLVMGlobal(Name, Ty, AddrSpace, nullptr);
setDSOLocal(cast<llvm::GlobalValue>(Ret->stripPointerCasts()));
return Ret;
4121}

4123void CodeGenModule::EmitTentativeDefinition(const VarDecl *D) {
assert(!D->getInit() && "Cannot emit definite definitions here!")(static_cast <bool> (!D->getInit() && "Cannot emit definite definitions here!"
) ? void (0) : __assert_fail ("!D->getInit() && \"Cannot emit definite definitions here!\""
, "/build/llvm-toolchain-snapshot-13~++20210726100616+dead50d4427c/clang/lib/CodeGen/CodeGenModule.cpp"
, 4124, __extension__ __PRETTY_FUNCTION__));

StringRef MangledName = getMangledName(D);
llvm::GlobalValue *GV = GetGlobalValue(MangledName);

// We already have a definition, not declaration, with the same mangled name.
// Emitting of declaration is not required (and actually overwrites emitted
// definition).
if (GV && !GV->isDeclaration())
  return;

// If we have not seen a reference to this variable yet, place it into the
// deferred declarations table to be emitted if needed later.
if (!MustBeEmitted(D) && !GV) {
    DeferredDecls[MangledName] = D;
    return;
}

// The tentative definition is the only definition.
EmitGlobalVarDefinition(D);
4144}

4146void CodeGenModule::EmitExternalDeclaration(const VarDecl *D) {
EmitExternalVarDeclaration(D);
4148}

4150CharUnits CodeGenModule::GetTargetTypeStoreSize(llvm::Type *Ty) const {
return Context.toCharUnitsFromBits(
    getDataLayout().getTypeStoreSizeInBits(Ty));
4153}

4155LangAS CodeGenModule::GetGlobalVarAddressSpace(const VarDecl *D) {
LangAS AddrSpace = LangAS::Default;
if (LangOpts.OpenCL) {
  AddrSpace = D ? D->getType().getAddressSpace() : LangAS::opencl_global;
  assert(AddrSpace == LangAS::opencl_global ||(static_cast <bool> (AddrSpace == LangAS::opencl_global
 || AddrSpace == LangAS::opencl_global_device || AddrSpace ==
 LangAS::opencl_global_host || AddrSpace == LangAS::opencl_constant
 || AddrSpace == LangAS::opencl_local || AddrSpace >= LangAS
::FirstTargetAddressSpace) ? void (0) : __assert_fail ("AddrSpace == LangAS::opencl_global || AddrSpace == LangAS::opencl_global_device || AddrSpace == LangAS::opencl_global_host || AddrSpace == LangAS::opencl_constant || AddrSpace == LangAS::opencl_local || AddrSpace >= LangAS::FirstTargetAddressSpace"
, "/build/llvm-toolchain-snapshot-13~++20210726100616+dead50d4427c/clang/lib/CodeGen/CodeGenModule.cpp"
, 4164, __extension__ __PRETTY_FUNCTION__))
         AddrSpace == LangAS::opencl_global_device ||(static_cast <bool> (AddrSpace == LangAS::opencl_global
 || AddrSpace == LangAS::opencl_global_device || AddrSpace ==
 LangAS::opencl_global_host || AddrSpace == LangAS::opencl_constant
 || AddrSpace == LangAS::opencl_local || AddrSpace >= LangAS
::FirstTargetAddressSpace) ? void (0) : __assert_fail ("AddrSpace == LangAS::opencl_global || AddrSpace == LangAS::opencl_global_device || AddrSpace == LangAS::opencl_global_host || AddrSpace == LangAS::opencl_constant || AddrSpace == LangAS::opencl_local || AddrSpace >= LangAS::FirstTargetAddressSpace"
, "/build/llvm-toolchain-snapshot-13~++20210726100616+dead50d4427c/clang/lib/CodeGen/CodeGenModule.cpp"
, 4164, __extension__ __PRETTY_FUNCTION__))
         AddrSpace == LangAS::opencl_global_host ||(static_cast <bool> (AddrSpace == LangAS::opencl_global
 || AddrSpace == LangAS::opencl_global_device || AddrSpace ==
 LangAS::opencl_global_host || AddrSpace == LangAS::opencl_constant
 || AddrSpace == LangAS::opencl_local || AddrSpace >= LangAS
::FirstTargetAddressSpace) ? void (0) : __assert_fail ("AddrSpace == LangAS::opencl_global || AddrSpace == LangAS::opencl_global_device || AddrSpace == LangAS::opencl_global_host || AddrSpace == LangAS::opencl_constant || AddrSpace == LangAS::opencl_local || AddrSpace >= LangAS::FirstTargetAddressSpace"
, "/build/llvm-toolchain-snapshot-13~++20210726100616+dead50d4427c/clang/lib/CodeGen/CodeGenModule.cpp"
, 4164, __extension__ __PRETTY_FUNCTION__))
         AddrSpace == LangAS::opencl_constant ||(static_cast <bool> (AddrSpace == LangAS::opencl_global
 || AddrSpace == LangAS::opencl_global_device || AddrSpace ==
 LangAS::opencl_global_host || AddrSpace == LangAS::opencl_constant
 || AddrSpace == LangAS::opencl_local || AddrSpace >= LangAS
::FirstTargetAddressSpace) ? void (0) : __assert_fail ("AddrSpace == LangAS::opencl_global || AddrSpace == LangAS::opencl_global_device || AddrSpace == LangAS::opencl_global_host || AddrSpace == LangAS::opencl_constant || AddrSpace == LangAS::opencl_local || AddrSpace >= LangAS::FirstTargetAddressSpace"
, "/build/llvm-toolchain-snapshot-13~++20210726100616+dead50d4427c/clang/lib/CodeGen/CodeGenModule.cpp"
, 4164, __extension__ __PRETTY_FUNCTION__))
         AddrSpace == LangAS::opencl_local ||(static_cast <bool> (AddrSpace == LangAS::opencl_global
 || AddrSpace == LangAS::opencl_global_device || AddrSpace ==
 LangAS::opencl_global_host || AddrSpace == LangAS::opencl_constant
 || AddrSpace == LangAS::opencl_local || AddrSpace >= LangAS
::FirstTargetAddressSpace) ? void (0) : __assert_fail ("AddrSpace == LangAS::opencl_global || AddrSpace == LangAS::opencl_global_device || AddrSpace == LangAS::opencl_global_host || AddrSpace == LangAS::opencl_constant || AddrSpace == LangAS::opencl_local || AddrSpace >= LangAS::FirstTargetAddressSpace"
, "/build/llvm-toolchain-snapshot-13~++20210726100616+dead50d4427c/clang/lib/CodeGen/CodeGenModule.cpp"
, 4164, __extension__ __PRETTY_FUNCTION__))
         AddrSpace >= LangAS::FirstTargetAddressSpace)(static_cast <bool> (AddrSpace == LangAS::opencl_global
 || AddrSpace == LangAS::opencl_global_device || AddrSpace ==
 LangAS::opencl_global_host || AddrSpace == LangAS::opencl_constant
 || AddrSpace == LangAS::opencl_local || AddrSpace >= LangAS
::FirstTargetAddressSpace) ? void (0) : __assert_fail ("AddrSpace == LangAS::opencl_global || AddrSpace == LangAS::opencl_global_device || AddrSpace == LangAS::opencl_global_host || AddrSpace == LangAS::opencl_constant || AddrSpace == LangAS::opencl_local || AddrSpace >= LangAS::FirstTargetAddressSpace"
, "/build/llvm-toolchain-snapshot-13~++20210726100616+dead50d4427c/clang/lib/CodeGen/CodeGenModule.cpp"
, 4164, __extension__ __PRETTY_FUNCTION__));
  return AddrSpace;
}

if (LangOpts.SYCLIsDevice &&
    (!D || D->getType().getAddressSpace() == LangAS::Default))
  return LangAS::sycl_global;

if (LangOpts.CUDA && LangOpts.CUDAIsDevice) {
  if (D && D->hasAttr<CUDAConstantAttr>())
    return LangAS::cuda_constant;
  else if (D && D->hasAttr<CUDASharedAttr>())
    return LangAS::cuda_shared;
  else if (D && D->hasAttr<CUDADeviceAttr>())
    return LangAS::cuda_device;
  else if (D && D->getType().isConstQualified())
    return LangAS::cuda_constant;
  else
    return LangAS::cuda_device;
}

if (LangOpts.OpenMP) {
  LangAS AS;
  if (OpenMPRuntime->hasAllocateAttributeForGlobalVar(D, AS))
    return AS;
}
return getTargetCodeGenInfo().getGlobalVarAddressSpace(*this, D);
4191}

4193LangAS CodeGenModule::GetGlobalConstantAddressSpace() const {
// OpenCL v1.2 s6.5.3: a string literal is in the constant address space.
if (LangOpts.OpenCL)
  return LangAS::opencl_constant;
if (LangOpts.SYCLIsDevice)
  return LangAS::sycl_global;
if (auto AS = getTarget().getConstantAddressSpace())
  return AS.getValue();
return LangAS::Default;
4202}

4204// In address space agnostic languages, string literals are in default address
4205// space in AST. However, certain targets (e.g. amdgcn) request them to be
4206// emitted in constant address space in LLVM IR. To be consistent with other
4207// parts of AST, string literal global variables in constant address space
4208// need to be casted to default address space before being put into address
4209// map and referenced by other part of CodeGen.
4210// In OpenCL, string literals are in constant address space in AST, therefore
4211// they should not be casted to default address space.
4212static llvm::Constant *
4213castStringLiteralToDefaultAddressSpace(CodeGenModule &CGM,
                                     llvm::GlobalVariable *GV) {
llvm::Constant *Cast = GV;
if (!CGM.getLangOpts().OpenCL) {
  auto AS = CGM.GetGlobalConstantAddressSpace();
  if (AS != LangAS::Default)
    Cast = CGM.getTargetCodeGenInfo().performAddrSpaceCast(
        CGM, GV, AS, LangAS::Default,
        GV->getValueType()->getPointerTo(
            CGM.getContext().getTargetAddressSpace(LangAS::Default)));
}
return Cast;
4225}

4227template<typename SomeDecl>
4228void CodeGenModule::MaybeHandleStaticInExternC(const SomeDecl *D,
                                             llvm::GlobalValue *GV) {
if (!getLangOpts().CPlusPlus)
  return;

// Must have 'used' attribute, or else inline assembly can't rely on
// the name existing.
if (!D->template hasAttr<UsedAttr>())
  return;

// Must have internal linkage and an ordinary name.
if (!D->getIdentifier() || D->getFormalLinkage() != InternalLinkage)
  return;

// Must be in an extern "C" context. Entities declared directly within
// a record are not extern "C" even if the record is in such a context.
const SomeDecl *First = D->getFirstDecl();
if (First->getDeclContext()->isRecord() || !First->isInExternCContext())
  return;

// OK, this is an internal linkage entity inside an extern "C" linkage
// specification. Make a note of that so we can give it the "expected"
// mangled name if nothing else is using that name.
std::pair<StaticExternCMap::iterator, bool> R =
    StaticExternCValues.insert(std::make_pair(D->getIdentifier(), GV));

// If we have multiple internal linkage entities with the same name
// in extern "C" regions, none of them gets that name.
if (!R.second)
  R.first->second = nullptr;
4258}

4260static bool shouldBeInCOMDAT(CodeGenModule &CGM, const Decl &D) {
if (!CGM.supportsCOMDAT())
  return false;

// Do not set COMDAT attribute for CUDA/HIP stub functions to prevent
// them being "merged" by the COMDAT Folding linker optimization.
if (D.hasAttr<CUDAGlobalAttr>())
  return false;

if (D.hasAttr<SelectAnyAttr>())
  return true;

GVALinkage Linkage;
if (auto *VD = dyn_cast<VarDecl>(&D))
  Linkage = CGM.getContext().GetGVALinkageForVariable(VD);
else
  Linkage = CGM.getContext().GetGVALinkageForFunction(cast<FunctionDecl>(&D));

switch (Linkage) {
case GVA_Internal:
case GVA_AvailableExternally:
case GVA_StrongExternal:
  return false;
case GVA_DiscardableODR:
case GVA_StrongODR:
  return true;
}
llvm_unreachable("No such linkage")::llvm::llvm_unreachable_internal("No such linkage", "/build/llvm-toolchain-snapshot-13~++20210726100616+dead50d4427c/clang/lib/CodeGen/CodeGenModule.cpp"
, 4287);
4288}

4290void CodeGenModule::maybeSetTrivialComdat(const Decl &D,
                                        llvm::GlobalObject &GO) {
if (!shouldBeInCOMDAT(*this, D))
  return;
GO.setComdat(TheModule.getOrInsertComdat(GO.getName()));
4295}

4297/// Pass IsTentative as true if you want to create a tentative definition.
4298void CodeGenModule::EmitGlobalVarDefinition(const VarDecl *D,
                                          bool IsTentative) {
// OpenCL global variables of sampler type are translated to function calls,
// therefore no need to be translated.
QualType ASTTy = D->getType();
if (getLangOpts().OpenCL && ASTTy->isSamplerT())
  return;

// If this is OpenMP device, check if it is legal to emit this global
// normally.
if (LangOpts.OpenMPIsDevice && OpenMPRuntime &&
    OpenMPRuntime->emitTargetGlobalVariable(D))
  return;

llvm::TrackingVH<llvm::Constant> Init;
bool NeedsGlobalCtor = false;
bool NeedsGlobalDtor =
    D->needsDestruction(getContext()) == QualType::DK_cxx_destructor;

const VarDecl *InitDecl;
const Expr *InitExpr = D->getAnyInitializer(InitDecl);

Optional<ConstantEmitter> emitter;

// CUDA E.2.4.1 "__shared__ variables cannot have an initialization
// as part of their declaration."  Sema has already checked for
// error cases, so we just need to set Init to UndefValue.
bool IsCUDASharedVar =
    getLangOpts().CUDAIsDevice && D->hasAttr<CUDASharedAttr>();
// Shadows of initialized device-side global variables are also left
// undefined.
// Managed Variables should be initialized on both host side and device side.
bool IsCUDAShadowVar =
    !getLangOpts().CUDAIsDevice && !D->hasAttr<HIPManagedAttr>() &&
    (D->hasAttr<CUDAConstantAttr>() || D->hasAttr<CUDADeviceAttr>() ||
     D->hasAttr<CUDASharedAttr>());
bool IsCUDADeviceShadowVar =
    getLangOpts().CUDAIsDevice && !D->hasAttr<HIPManagedAttr>() &&
    (D->getType()->isCUDADeviceBuiltinSurfaceType() ||
     D->getType()->isCUDADeviceBuiltinTextureType());
if (getLangOpts().CUDA &&
    (IsCUDASharedVar || IsCUDAShadowVar || IsCUDADeviceShadowVar))
  Init = llvm::UndefValue::get(getTypes().ConvertTypeForMem(ASTTy));
else if (D->hasAttr<LoaderUninitializedAttr>())
  Init = llvm::UndefValue::get(getTypes().ConvertTypeForMem(ASTTy));
else if (!InitExpr) {
  // This is a tentative definition; tentative definitions are
  // implicitly initialized with { 0 }.
  //
  // Note that tentative definitions are only emitted at the end of
  // a translation unit, so they should never have incomplete
  // type. In addition, EmitTentativeDefinition makes sure that we
  // never attempt to emit a tentative definition if a real one
  // exists. A use may still exists, however, so we still may need
  // to do a RAUW.
  assert(!ASTTy->isIncompleteType() && "Unexpected incomplete type")(static_cast <bool> (!ASTTy->isIncompleteType() &&
 "Unexpected incomplete type") ? void (0) : __assert_fail ("!ASTTy->isIncompleteType() && \"Unexpected incomplete type\""
, "/build/llvm-toolchain-snapshot-13~++20210726100616+dead50d4427c/clang/lib/CodeGen/CodeGenModule.cpp"
, 4353, __extension__ __PRETTY_FUNCTION__));
  Init = EmitNullConstant(D->getType());
} else {
  initializedGlobalDecl = GlobalDecl(D);
  emitter.emplace(*this);
  llvm::Constant *Initializer = emitter->tryEmitForInitializer(*InitDecl);
  if (!Initializer) {
    QualType T = InitExpr->getType();
    if (D->getType()->isReferenceType())
      T = D->getType();

    if (getLangOpts().CPlusPlus) {
      Init = EmitNullConstant(T);
      NeedsGlobalCtor = true;
    } else {
      ErrorUnsupported(D, "static initializer");
      Init = llvm::UndefValue::get(getTypes().ConvertType(T));
    }
  } else {
    Init = Initializer;
    // We don't need an initializer, so remove the entry for the delayed
    // initializer position (just in case this entry was delayed) if we
    // also don't need to register a destructor.
    if (getLangOpts().CPlusPlus && !NeedsGlobalDtor)
      DelayedCXXInitPosition.erase(D);
  }
}

llvm::Type* InitType = Init->getType();
llvm::Constant *Entry =
    GetAddrOfGlobalVar(D, InitType, ForDefinition_t(!IsTentative));

// Strip off pointer casts if we got them.
Entry = Entry->stripPointerCasts();

// Entry is now either a Function or GlobalVariable.
auto *GV = dyn_cast<llvm::GlobalVariable>(Entry);

// We have a definition after a declaration with the wrong type.
// We must make a new GlobalVariable* and update everything that used OldGV
// (a declaration or tentative definition) with the new GlobalVariable*
// (which will be a definition).
//
// This happens if there is a prototype for a global (e.g.
// "extern int x[];") and then a definition of a different type (e.g.
// "int x[10];"). This also happens when an initializer has a different type
// from the type of the global (this happens with unions).
if (!GV || GV->getValueType() != InitType ||
    GV->getType()->getAddressSpace() !=
        getContext().getTargetAddressSpace(GetGlobalVarAddressSpace(D))) {

  // Move the old entry aside so that we'll create a new one.
  Entry->setName(StringRef());

  // Make a new global with the correct type, this is now guaranteed to work.
  GV = cast<llvm::GlobalVariable>(
      GetAddrOfGlobalVar(D, InitType, ForDefinition_t(!IsTentative))
          ->stripPointerCasts());

  // Replace all uses of the old global with the new global
  llvm::Constant *NewPtrForOldDecl =
      llvm::ConstantExpr::getPointerBitCastOrAddrSpaceCast(GV,
                                                           Entry->getType());
  Entry->replaceAllUsesWith(NewPtrForOldDecl);

  // Erase the old global, since it is no longer used.
  cast<llvm::GlobalValue>(Entry)->eraseFromParent();
}

MaybeHandleStaticInExternC(D, GV);

if (D->hasAttr<AnnotateAttr>())
  AddGlobalAnnotations(D, GV);

// Set the llvm linkage type as appropriate.
llvm::GlobalValue::LinkageTypes Linkage =
    getLLVMLinkageVarDefinition(D, GV->isConstant());

// CUDA B.2.1 "The __device__ qualifier declares a variable that resides on
// the device. [...]"
// CUDA B.2.2 "The __constant__ qualifier, optionally used together with
// __device__, declares a variable that: [...]
// Is accessible from all the threads within the grid and from the host
// through the runtime library (cudaGetSymbolAddress() / cudaGetSymbolSize()
// / cudaMemcpyToSymbol() / cudaMemcpyFromSymbol())."
if (GV && LangOpts.CUDA) {
  if (LangOpts.CUDAIsDevice) {
    if (Linkage != llvm::GlobalValue::InternalLinkage &&
        (D->hasAttr<CUDADeviceAttr>() || D->hasAttr<CUDAConstantAttr>()))
      GV->setExternallyInitialized(true);
  } else {
    getCUDARuntime().internalizeDeviceSideVar(D, Linkage);
  }
  getCUDARuntime().handleVarRegistration(D, *GV);
}

GV->setInitializer(Init);
if (emitter)
  emitter->finalize(GV);

// If it is safe to mark the global 'constant', do so now.
GV->setConstant(!NeedsGlobalCtor && !NeedsGlobalDtor &&
                isTypeConstant(D->getType(), true));

// If it is in a read-only section, mark it 'constant'.
if (const SectionAttr *SA = D->getAttr<SectionAttr>()) {
  const ASTContext::SectionInfo &SI = Context.SectionInfos[SA->getName()];
  if ((SI.SectionFlags & ASTContext::PSF_Write) == 0)
    GV->setConstant(true);
}

GV->setAlignment(getContext().getDeclAlign(D).getAsAlign());

// On Darwin, unlike other Itanium C++ ABI platforms, the thread-wrapper
// function is only defined alongside the variable, not also alongside
// callers. Normally, all accesses to a thread_local go through the
// thread-wrapper in order to ensure initialization has occurred, underlying
// variable will never be used other than the thread-wrapper, so it can be
// converted to internal linkage.
//
// However, if the variable has the 'constinit' attribute, it _can_ be
// referenced directly, without calling the thread-wrapper, so the linkage
// must not be changed.
//
// Additionally, if the variable isn't plain external linkage, e.g. if it's
// weak or linkonce, the de-duplication semantics are important to preserve,
// so we don't change the linkage.
if (D->getTLSKind() == VarDecl::TLS_Dynamic &&
    Linkage == llvm::GlobalValue::ExternalLinkage &&
    Context.getTargetInfo().getTriple().isOSDarwin() &&
    !D->hasAttr<ConstInitAttr>())
  Linkage = llvm::GlobalValue::InternalLinkage;

GV->setLinkage(Linkage);
if (D->hasAttr<DLLImportAttr>())
  GV->setDLLStorageClass(llvm::GlobalVariable::DLLImportStorageClass);
else if (D->hasAttr<DLLExportAttr>())
  GV->setDLLStorageClass(llvm::GlobalVariable::DLLExportStorageClass);
else
  GV->setDLLStorageClass(llvm::GlobalVariable::DefaultStorageClass);

if (Linkage == llvm::GlobalVariable::CommonLinkage) {
  // common vars aren't constant even if declared const.
  GV->setConstant(false);
  // Tentative definition of global variables may be initialized with
  // non-zero null pointers. In this case they should have weak linkage
  // since common linkage must have zero initializer and must not have
  // explicit section therefore cannot have non-zero initial value.
  if (!GV->getInitializer()->isNullValue())
    GV->setLinkage(llvm::GlobalVariable::WeakAnyLinkage);
}

setNonAliasAttributes(D, GV);

if (D->getTLSKind() && !GV->isThreadLocal()) {
  if (D->getTLSKind() == VarDecl::TLS_Dynamic)
    CXXThreadLocals.push_back(D);
  setTLSMode(GV, *D);
}

maybeSetTrivialComdat(*D, *GV);

// Emit the initializer function if necessary.
if (NeedsGlobalCtor || NeedsGlobalDtor)
  EmitCXXGlobalVarDeclInitFunc(D, GV, NeedsGlobalCtor);

SanitizerMD->reportGlobalToASan(GV, *D, NeedsGlobalCtor);

// Emit global variable debug information.
if (CGDebugInfo *DI = getModuleDebugInfo())
  if (getCodeGenOpts().hasReducedDebugInfo())
    DI->EmitGlobalVariable(GV, D);
4525}

4527void CodeGenModule::EmitExternalVarDeclaration(const VarDecl *D) {
if (CGDebugInfo *DI = getModuleDebugInfo())
  if (getCodeGenOpts().hasReducedDebugInfo()) {
    QualType ASTTy = D->getType();
    llvm::Type *Ty = getTypes().ConvertTypeForMem(D->getType());
    llvm::Constant *GV = GetOrCreateLLVMGlobal(
        D->getName(), Ty, getContext().getTargetAddressSpace(ASTTy), D);
    DI->EmitExternalVariable(
        cast<llvm::GlobalVariable>(GV->stripPointerCasts()), D);
  }
4537}

4539static bool isVarDeclStrongDefinition(const ASTContext &Context,
                                    CodeGenModule &CGM, const VarDecl *D,
                                    bool NoCommon) {
// Don't give variables common linkage if -fno-common was specified unless it
// was overridden by a NoCommon attribute.
if ((NoCommon || D->hasAttr<NoCommonAttr>()) && !D->hasAttr<CommonAttr>())
  return true;

// C11 6.9.2/2:
//   A declaration of an identifier for an object that has file scope without
//   an initializer, and without a storage-class specifier or with the
//   storage-class specifier static, constitutes a tentative definition.
if (D->getInit() || D->hasExternalStorage())
  return true;

// A variable cannot be both common and exist in a section.
if (D->hasAttr<SectionAttr>())
  return true;

// A variable cannot be both common and exist in a section.
// We don't try to determine which is the right section in the front-end.
// If no specialized section name is applicable, it will resort to default.
if (D->hasAttr<PragmaClangBSSSectionAttr>() ||
    D->hasAttr<PragmaClangDataSectionAttr>() ||
    D->hasAttr<PragmaClangRelroSectionAttr>() ||
    D->hasAttr<PragmaClangRodataSectionAttr>())
  return true;

// Thread local vars aren't considered common linkage.
if (D->getTLSKind())
  return true;

// Tentative definitions marked with WeakImportAttr are true definitions.
if (D->hasAttr<WeakImportAttr>())
  return true;

// A variable cannot be both common and exist in a comdat.
if (shouldBeInCOMDAT(CGM, *D))
  return true;

// Declarations with a required alignment do not have common linkage in MSVC
// mode.
if (Context.getTargetInfo().getCXXABI().isMicrosoft()) {
  if (D->hasAttr<AlignedAttr>())
    return true;
  QualType VarType = D->getType();
  if (Context.isAlignmentRequired(VarType))
    return true;

  if (const auto *RT = VarType->getAs<RecordType>()) {
    const RecordDecl *RD = RT->getDecl();
    for (const FieldDecl *FD : RD->fields()) {
      if (FD->isBitField())
        continue;
      if (FD->hasAttr<AlignedAttr>())
        return true;
      if (Context.isAlignmentRequired(FD->getType()))
        return true;
    }
  }
}

// Microsoft's link.exe doesn't support alignments greater than 32 bytes for
// common symbols, so symbols with greater alignment requirements cannot be
// common.
// Other COFF linkers (ld.bfd and LLD) support arbitrary power-of-two
// alignments for common symbols via the aligncomm directive, so this
// restriction only applies to MSVC environments.
if (Context.getTargetInfo().getTriple().isKnownWindowsMSVCEnvironment() &&
    Context.getTypeAlignIfKnown(D->getType()) >
        Context.toBits(CharUnits::fromQuantity(32)))
  return true;

return false;
4613}

4615llvm::GlobalValue::LinkageTypes CodeGenModule::getLLVMLinkageForDeclarator(
  const DeclaratorDecl *D, GVALinkage Linkage, bool IsConstantVariable) {
if (Linkage == GVA_Internal)
  return llvm::Function::InternalLinkage;

if (D->hasAttr<WeakAttr>()) {
  if (IsConstantVariable)
    return llvm::GlobalVariable::WeakODRLinkage;
  else
    return llvm::GlobalVariable::WeakAnyLinkage;
}

if (const auto *FD = D->getAsFunction())
  if (FD->isMultiVersion() && Linkage == GVA_AvailableExternally)
    return llvm::GlobalVariable::LinkOnceAnyLinkage;

// We are guaranteed to have a strong definition somewhere else,
// so we can use available_externally linkage.
if (Linkage == GVA_AvailableExternally)
  return llvm::GlobalValue::AvailableExternallyLinkage;

// Note that Apple's kernel linker doesn't support symbol
// coalescing, so we need to avoid linkonce and weak linkages there.
// Normally, this means we just map to internal, but for explicit
// instantiations we'll map to external.

// In C++, the compiler has to emit a definition in every translation unit
// that references the function.  We should use linkonce_odr because
// a) if all references in this translation unit are optimized away, we
// don't need to codegen it.  b) if the function persists, it needs to be
// merged with other definitions. c) C++ has the ODR, so we know the
// definition is dependable.
if (Linkage == GVA_DiscardableODR)
  return !Context.getLangOpts().AppleKext ? llvm::Function::LinkOnceODRLinkage
                                          : llvm::Function::InternalLinkage;

// An explicit instantiation of a template has weak linkage, since
// explicit instantiations can occur in multiple translation units
// and must all be equivalent. However, we are not allowed to
// throw away these explicit instantiations.
//
// CUDA/HIP: For -fno-gpu-rdc case, device code is limited to one TU,
// so say that CUDA templates are either external (for kernels) or internal.
// This lets llvm perform aggressive inter-procedural optimizations. For
// -fgpu-rdc case, device function calls across multiple TU's are allowed,
// therefore we need to follow the normal linkage paradigm.
if (Linkage == GVA_StrongODR) {
  if (getLangOpts().AppleKext)
    return llvm::Function::ExternalLinkage;
  if (getLangOpts().CUDA && getLangOpts().CUDAIsDevice &&
      !getLangOpts().GPURelocatableDeviceCode)
    return D->hasAttr<CUDAGlobalAttr>() ? llvm::Function::ExternalLinkage
                                        : llvm::Function::InternalLinkage;
  return llvm::Function::WeakODRLinkage;
}

// C++ doesn't have tentative definitions and thus cannot have common
// linkage.
if (!getLangOpts().CPlusPlus && isa<VarDecl>(D) &&
    !isVarDeclStrongDefinition(Context, *this, cast<VarDecl>(D),
                               CodeGenOpts.NoCommon))
  return llvm::GlobalVariable::CommonLinkage;

// selectany symbols are externally visible, so use weak instead of
// linkonce.  MSVC optimizes away references to const selectany globals, so
// all definitions should be the same and ODR linkage should be used.
// http://msdn.microsoft.com/en-us/library/5tkz6s71.aspx
if (D->hasAttr<SelectAnyAttr>())
  return llvm::GlobalVariable::WeakODRLinkage;

// Otherwise, we have strong external linkage.
assert(Linkage == GVA_StrongExternal)(static_cast <bool> (Linkage == GVA_StrongExternal) ? void
 (0) : __assert_fail ("Linkage == GVA_StrongExternal", "/build/llvm-toolchain-snapshot-13~++20210726100616+dead50d4427c/clang/lib/CodeGen/CodeGenModule.cpp"
, 4686, __extension__ __PRETTY_FUNCTION__));
return llvm::GlobalVariable::ExternalLinkage;
4688}

4690llvm::GlobalValue::LinkageTypes CodeGenModule::getLLVMLinkageVarDefinition(
  const VarDecl *VD, bool IsConstant) {
GVALinkage Linkage = getContext().GetGVALinkageForVariable(VD);
return getLLVMLinkageForDeclarator(VD, Linkage, IsConstant);
4694}

4696/// Replace the uses of a function that was declared with a non-proto type.
4697/// We want to silently drop extra arguments from call sites
4698static void replaceUsesOfNonProtoConstant(llvm::Constant *old,
                                        llvm::Function *newFn) {
// Fast path.
if (old->use_empty()) return;

llvm::Type *newRetTy = newFn->getReturnType();
SmallVector<llvm::Value*, 4> newArgs;

for (llvm::Value::use_iterator ui = old->use_begin(), ue = old->use_end();
       ui != ue; ) {
  llvm::Value::use_iterator use = ui++; // Increment before the use is erased.
  llvm::User *user = use->getUser();

  // Recognize and replace uses of bitcasts.  Most calls to
  // unprototyped functions will use bitcasts.
  if (auto *bitcast = dyn_cast<llvm::ConstantExpr>(user)) {
    if (bitcast->getOpcode() == llvm::Instruction::BitCast)
      replaceUsesOfNonProtoConstant(bitcast, newFn);
    continue;
  }

  // Recognize calls to the function.
  llvm::CallBase *callSite = dyn_cast<llvm::CallBase>(user);
  if (!callSite) continue;
  if (!callSite->isCallee(&*use))
    continue;

  // If the return types don't match exactly, then we can't
  // transform this call unless it's dead.
  if (callSite->getType() != newRetTy && !callSite->use_empty())
    continue;

  // Get the call site's attribute list.
  SmallVector<llvm::AttributeSet, 8> newArgAttrs;
  llvm::AttributeList oldAttrs = callSite->getAttributes();

  // If the function was passed too few arguments, don't transform.
  unsigned newNumArgs = newFn->arg_size();
  if (callSite->arg_size() < newNumArgs)
    continue;

  // If extra arguments were passed, we silently drop them.
  // If any of the types mismatch, we don't transform.
  unsigned argNo = 0;
  bool dontTransform = false;
  for (llvm::Argument &A : newFn->args()) {
    if (callSite->getArgOperand(argNo)->getType() != A.getType()) {
      dontTransform = true;
      break;
    }

    // Add any parameter attributes.
    newArgAttrs.push_back(oldAttrs.getParamAttributes(argNo));
    argNo++;
  }
  if (dontTransform)
    continue;

  // Okay, we can transform this.  Create the new call instruction and copy
  // over the required information.
  newArgs.append(callSite->arg_begin(), callSite->arg_begin() + argNo);

  // Copy over any operand bundles.
  SmallVector<llvm::OperandBundleDef, 1> newBundles;
  callSite->getOperandBundlesAsDefs(newBundles);

  llvm::CallBase *newCall;
  if (dyn_cast<llvm::CallInst>(callSite)) {
    newCall =
        llvm::CallInst::Create(newFn, newArgs, newBundles, "", callSite);
  } else {
    auto *oldInvoke = cast<llvm::InvokeInst>(callSite);
    newCall = llvm::InvokeInst::Create(newFn, oldInvoke->getNormalDest(),
                                       oldInvoke->getUnwindDest(), newArgs,
                                       newBundles, "", callSite);
  }
  newArgs.clear(); // for the next iteration

  if (!newCall->getType()->isVoidTy())
    newCall->takeName(callSite);
  newCall->setAttributes(llvm::AttributeList::get(
      newFn->getContext(), oldAttrs.getFnAttributes(),
      oldAttrs.getRetAttributes(), newArgAttrs));
  newCall->setCallingConv(callSite->getCallingConv());

  // Finally, remove the old call, replacing any uses with the new one.
  if (!callSite->use_empty())
    callSite->replaceAllUsesWith(newCall);

  // Copy debug location attached to CI.
  if (callSite->getDebugLoc())
    newCall->setDebugLoc(callSite->getDebugLoc());

  callSite->eraseFromParent();
}
4793}

4795/// ReplaceUsesOfNonProtoTypeWithRealFunction - This function is called when we
4796/// implement a function with no prototype, e.g. "int foo() {}".  If there are
4797/// existing call uses of the old function in the module, this adjusts them to
4798/// call the new function directly.
4799///
4800/// This is not just a cleanup: the always_inline pass requires direct calls to
4801/// functions to be able to inline them.  If there is a bitcast in the way, it
4802/// won't inline them.  Instcombine normally deletes these calls, but it isn't
4803/// run at -O0.
4804static void ReplaceUsesOfNonProtoTypeWithRealFunction(llvm::GlobalValue *Old,
                                                    llvm::Function *NewFn) {
// If we're redefining a global as a function, don't transform it.
if (!isa<llvm::Function>(Old)) return;

replaceUsesOfNonProtoConstant(Old, NewFn);
4810}

4812void CodeGenModule::HandleCXXStaticMemberVarInstantiation(VarDecl *VD) {
auto DK = VD->isThisDeclarationADefinition();
if (DK == VarDecl::Definition && VD->hasAttr<DLLImportAttr>())
  return;

TemplateSpecializationKind TSK = VD->getTemplateSpecializationKind();
// If we have a definition, this might be a deferred decl. If the
// instantiation is explicit, make sure we emit it at the end.
if (VD->getDefinition() && TSK == TSK_ExplicitInstantiationDefinition)
  GetAddrOfGlobalVar(VD);

EmitTopLevelDecl(VD);
4824}

4826void CodeGenModule::EmitGlobalFunctionDefinition(GlobalDecl GD,
                                               llvm::GlobalValue *GV) {
const auto *D = cast<FunctionDecl>(GD.getDecl());

// Compute the function info and LLVM type.
const CGFunctionInfo &FI = getTypes().arrangeGlobalDeclaration(GD);
llvm::FunctionType *Ty = getTypes().GetFunctionType(FI);

// Get or create the prototype for the function.
if (!GV || (GV->getValueType() != Ty))
  GV = cast<llvm::GlobalValue>(GetAddrOfFunction(GD, Ty, /*ForVTable=*/false,
                                                 /*DontDefer=*/true,
                                                 ForDefinition));

// Already emitted.
if (!GV->isDeclaration())
  return;

// We need to set linkage and visibility on the function before
// generating code for it because various parts of IR generation
// want to propagate this information down (e.g. to local static
// declarations).
auto *Fn = cast<llvm::Function>(GV);
setFunctionLinkage(GD, Fn);

// FIXME: this is redundant with part of setFunctionDefinitionAttributes
setGVProperties(Fn, GD);

MaybeHandleStaticInExternC(D, Fn);

maybeSetTrivialComdat(*D, *Fn);

// Set CodeGen attributes that represent floating point environment.
setLLVMFunctionFEnvAttributes(D, Fn);

CodeGenFunction(*this).GenerateCode(GD, Fn, FI);

setNonAliasAttributes(GD, Fn);
SetLLVMFunctionAttributesForDefinition(D, Fn);

if (const ConstructorAttr *CA = D->getAttr<ConstructorAttr>())
  AddGlobalCtor(Fn, CA->getPriority());
if (const DestructorAttr *DA = D->getAttr<DestructorAttr>())
  AddGlobalDtor(Fn, DA->getPriority(), true);
if (D->hasAttr<AnnotateAttr>())
  AddGlobalAnnotations(D, Fn);
4872}

4874void CodeGenModule::EmitAliasDefinition(GlobalDecl GD) {
const auto *D = cast<ValueDecl>(GD.getDecl());
const AliasAttr *AA = D->getAttr<AliasAttr>();
assert(AA && "Not an alias?")(static_cast <bool> (AA && "Not an alias?") ? void
 (0) : __assert_fail ("AA && \"Not an alias?\"", "/build/llvm-toolchain-snapshot-13~++20210726100616+dead50d4427c/clang/lib/CodeGen/CodeGenModule.cpp"
, 4877, __extension__ __PRETTY_FUNCTION__));

StringRef MangledName = getMangledName(GD);

if (AA->getAliasee() == MangledName) {
  Diags.Report(AA->getLocation(), diag::err_cyclic_alias) << 0;
  return;
}

// If there is a definition in the module, then it wins over the alias.
// This is dubious, but allow it to be safe.  Just ignore the alias.
llvm::GlobalValue *Entry = GetGlobalValue(MangledName);
if (Entry && !Entry->isDeclaration())
  return;

Aliases.push_back(GD);

llvm::Type *DeclTy = getTypes().ConvertTypeForMem(D->getType());

// Create a reference to the named value.  This ensures that it is emitted
// if a deferred decl.
llvm::Constant *Aliasee;
llvm::GlobalValue::LinkageTypes LT;
if (isa<llvm::FunctionType>(DeclTy)) {
  Aliasee = GetOrCreateLLVMFunction(AA->getAliasee(), DeclTy, GD,
                                    /*ForVTable=*/false);
  LT = getFunctionLinkage(GD);
} else {
  Aliasee = GetOrCreateLLVMGlobal(AA->getAliasee(), DeclTy, 0,
                                  /*D=*/nullptr);
  if (const auto *VD = dyn_cast<VarDecl>(GD.getDecl()))
    LT = getLLVMLinkageVarDefinition(VD, D->getType().isConstQualified());
  else
    LT = getFunctionLinkage(GD);
}

// Create the new alias itself, but don't set a name yet.
unsigned AS = Aliasee->getType()->getPointerAddressSpace();
auto *GA =
    llvm::GlobalAlias::create(DeclTy, AS, LT, "", Aliasee, &getModule());

if (Entry) {
  if (GA->getAliasee() == Entry) {
    Diags.Report(AA->getLocation(), diag::err_cyclic_alias) << 0;
    return;
  }

  assert(Entry->isDeclaration())(static_cast <bool> (Entry->isDeclaration()) ? void (
0) : __assert_fail ("Entry->isDeclaration()", "/build/llvm-toolchain-snapshot-13~++20210726100616+dead50d4427c/clang/lib/CodeGen/CodeGenModule.cpp"
, 4924, __extension__ __PRETTY_FUNCTION__));

  // If there is a declaration in the module, then we had an extern followed
  // by the alias, as in:
  //   extern int test6();
  //   ...
  //   int test6() __attribute__((alias("test7")));
  //
  // Remove it and replace uses of it with the alias.
  GA->takeName(Entry);

  Entry->replaceAllUsesWith(llvm::ConstantExpr::getBitCast(GA,
                                                        Entry->getType()));
  Entry->eraseFromParent();
} else {
  GA->setName(MangledName);
}

// Set attributes which are particular to an alias; this is a
// specialization of the attributes which may be set on a global
// variable/function.
if (D->hasAttr<WeakAttr>() || D->hasAttr<WeakRefAttr>() ||
    D->isWeakImported()) {
  GA->setLinkage(llvm::Function::WeakAnyLinkage);
}

if (const auto *VD = dyn_cast<VarDecl>(D))
  if (VD->getTLSKind())
    setTLSMode(GA, *VD);

SetCommonAttributes(GD, GA);
4955}

4957void CodeGenModule::emitIFuncDefinition(GlobalDecl GD) {
const auto *D = cast<ValueDecl>(GD.getDecl());
const IFuncAttr *IFA = D->getAttr<IFuncAttr>();
assert(IFA && "Not an ifunc?")(static_cast <bool> (IFA && "Not an ifunc?") ? void
 (0) : __assert_fail ("IFA && \"Not an ifunc?\"", "/build/llvm-toolchain-snapshot-13~++20210726100616+dead50d4427c/clang/lib/CodeGen/CodeGenModule.cpp"
, 4960, __extension__ __PRETTY_FUNCTION__));

StringRef MangledName = getMangledName(GD);

if (IFA->getResolver() == MangledName) {
  Diags.Report(IFA->getLocation(), diag::err_cyclic_alias) << 1;
  return;
}

// Report an error if some definition overrides ifunc.
llvm::GlobalValue *Entry = GetGlobalValue(MangledName);
if (Entry && !Entry->isDeclaration()) {
  GlobalDecl OtherGD;
  if (lookupRepresentativeDecl(MangledName, OtherGD) &&
      DiagnosedConflictingDefinitions.insert(GD).second) {
    Diags.Report(D->getLocation(), diag::err_duplicate_mangled_name)
        << MangledName;
    Diags.Report(OtherGD.getDecl()->getLocation(),
                 diag::note_previous_definition);
  }
  return;
}

Aliases.push_back(GD);

llvm::Type *DeclTy = getTypes().ConvertTypeForMem(D->getType());
llvm::Constant *Resolver =
    GetOrCreateLLVMFunction(IFA->getResolver(), DeclTy, GD,
                            /*ForVTable=*/false);
llvm::GlobalIFunc *GIF =
    llvm::GlobalIFunc::create(DeclTy, 0, llvm::Function::ExternalLinkage,
                              "", Resolver, &getModule());
if (Entry) {
  if (GIF->getResolver() == Entry) {
    Diags.Report(IFA->getLocation(), diag::err_cyclic_alias) << 1;
    return;
  }
  assert(Entry->isDeclaration())(static_cast <bool> (Entry->isDeclaration()) ? void (
0) : __assert_fail ("Entry->isDeclaration()", "/build/llvm-toolchain-snapshot-13~++20210726100616+dead50d4427c/clang/lib/CodeGen/CodeGenModule.cpp"
, 4997, __extension__ __PRETTY_FUNCTION__));

  // If there is a declaration in the module, then we had an extern followed
  // by the ifunc, as in:
  //   extern int test();
  //   ...
  //   int test() __attribute__((ifunc("resolver")));
  //
  // Remove it and replace uses of it with the ifunc.
  GIF->takeName(Entry);

  Entry->replaceAllUsesWith(llvm::ConstantExpr::getBitCast(GIF,
                                                        Entry->getType()));
  Entry->eraseFromParent();
} else
  GIF->setName(MangledName);

SetCommonAttributes(GD, GIF);
5015}

5017llvm::Function *CodeGenModule::getIntrinsic(unsigned IID,
                                          ArrayRef<llvm::Type*> Tys) {
return llvm::Intrinsic::getDeclaration(&getModule(), (llvm::Intrinsic::ID)IID,
                                       Tys);
5021}

5023static llvm::StringMapEntry<llvm::GlobalVariable *> &
5024GetConstantCFStringEntry(llvm::StringMap<llvm::GlobalVariable *> &Map,
                       const StringLiteral *Literal, bool TargetIsLSB,
                       bool &IsUTF16, unsigned &StringLength) {
StringRef String = Literal->getString();
unsigned NumBytes = String.size();

// Check for simple case.
if (!Literal->containsNonAsciiOrNull()) {
  StringLength = NumBytes;
  return *Map.insert(std::make_pair(String, nullptr)).first;
}

// Otherwise, convert the UTF8 literals into a string of shorts.
IsUTF16 = true;

SmallVector<llvm::UTF16, 128> ToBuf(NumBytes + 1); // +1 for ending nulls.
const llvm::UTF8 *FromPtr = (const llvm::UTF8 *)String.data();
llvm::UTF16 *ToPtr = &ToBuf[0];

(void)llvm::ConvertUTF8toUTF16(&FromPtr, FromPtr + NumBytes, &ToPtr,
                               ToPtr + NumBytes, llvm::strictConversion);

// ConvertUTF8toUTF16 returns the length in ToPtr.
StringLength = ToPtr - &ToBuf[0];

// Add an explicit null.
*ToPtr = 0;
return *Map.insert(std::make_pair(
                       StringRef(reinterpret_cast<const char *>(ToBuf.data()),
                                 (StringLength + 1) * 2),
                       nullptr)).first;
5055}

5057ConstantAddress
5058CodeGenModule::GetAddrOfConstantCFString(const StringLiteral *Literal) {
unsigned StringLength = 0;
bool isUTF16 = false;
llvm::StringMapEntry<llvm::GlobalVariable *> &Entry =
    GetConstantCFStringEntry(CFConstantStringMap, Literal,
                             getDataLayout().isLittleEndian(), isUTF16,
                             StringLength);

if (auto *C = Entry.second)
  return ConstantAddress(C, CharUnits::fromQuantity(C->getAlignment()));

llvm::Constant *Zero = llvm::Constant::getNullValue(Int32Ty);
llvm::Constant *Zeros[] = { Zero, Zero };

const ASTContext &Context = getContext();
const llvm::Triple &Triple = getTriple();

const auto CFRuntime = getLangOpts().CFRuntime;
const bool IsSwiftABI =
    static_cast<unsigned>(CFRuntime) >=
    static_cast<unsigned>(LangOptions::CoreFoundationABI::Swift);
const bool IsSwift4_1 = CFRuntime == LangOptions::CoreFoundationABI::Swift4_1;

// If we don't already have it, get __CFConstantStringClassReference.
if (!CFConstantStringClassRef) {
  const char *CFConstantStringClassName = "__CFConstantStringClassReference";
  llvm::Type *Ty = getTypes().ConvertType(getContext().IntTy);
  Ty = llvm::ArrayType::get(Ty, 0);

  switch (CFRuntime) {
  default: break;
  case LangOptions::CoreFoundationABI::Swift: LLVM_FALLTHROUGH[[gnu::fallthrough]];
  case LangOptions::CoreFoundationABI::Swift5_0:
    CFConstantStringClassName =
        Triple.isOSDarwin() ? "$s15SwiftFoundation19_NSCFConstantStringCN"
                            : "$s10Foundation19_NSCFConstantStringCN";
    Ty = IntPtrTy;
    break;
  case LangOptions::CoreFoundationABI::Swift4_2:
    CFConstantStringClassName =
        Triple.isOSDarwin() ? "$S15SwiftFoundation19_NSCFConstantStringCN"
                            : "$S10Foundation19_NSCFConstantStringCN";
    Ty = IntPtrTy;
    break;
  case LangOptions::CoreFoundationABI::Swift4_1:
    CFConstantStringClassName =
        Triple.isOSDarwin() ? "__T015SwiftFoundation19_NSCFConstantStringCN"
                            : "__T010Foundation19_NSCFConstantStringCN";
    Ty = IntPtrTy;
    break;
  }

  llvm::Constant *C = CreateRuntimeVariable(Ty, CFConstantStringClassName);

  if (Triple.isOSBinFormatELF() || Triple.isOSBinFormatCOFF()) {
    llvm::GlobalValue *GV = nullptr;

    if ((GV = dyn_cast<llvm::GlobalValue>(C))) {
      IdentifierInfo &II = Context.Idents.get(GV->getName());
      TranslationUnitDecl *TUDecl = Context.getTranslationUnitDecl();
      DeclContext *DC = TranslationUnitDecl::castToDeclContext(TUDecl);

      const VarDecl *VD = nullptr;
      for (const auto *Result : DC->lookup(&II))
        if ((VD = dyn_cast<VarDecl>(Result)))
          break;

      if (Triple.isOSBinFormatELF()) {
        if (!VD)
          GV->setLinkage(llvm::GlobalValue::ExternalLinkage);
      } else {
        GV->setLinkage(llvm::GlobalValue::ExternalLinkage);
        if (!VD || !VD->hasAttr<DLLExportAttr>())
          GV->setDLLStorageClass(llvm::GlobalValue::DLLImportStorageClass);
        else
          GV->setDLLStorageClass(llvm::GlobalValue::DLLExportStorageClass);
      }

      setDSOLocal(GV);
    }
  }

  // Decay array -> ptr
  CFConstantStringClassRef =
      IsSwiftABI ? llvm::ConstantExpr::getPtrToInt(C, Ty)
                 : llvm::ConstantExpr::getGetElementPtr(Ty, C, Zeros);
}

QualType CFTy = Context.getCFConstantStringType();

auto *STy = cast<llvm::StructType>(getTypes().ConvertType(CFTy));

ConstantInitBuilder Builder(*this);
auto Fields = Builder.beginStruct(STy);

// Class pointer.
Fields.add(cast<llvm::ConstantExpr>(CFConstantStringClassRef));

// Flags.
if (IsSwiftABI) {
  Fields.addInt(IntPtrTy, IsSwift4_1 ? 0x05 : 0x01);
  Fields.addInt(Int64Ty, isUTF16 ? 0x07d0 : 0x07c8);
} else {
  Fields.addInt(IntTy, isUTF16 ? 0x07d0 : 0x07C8);
}

// String pointer.
llvm::Constant *C = nullptr;
if (isUTF16) {
  auto Arr = llvm::makeArrayRef(
      reinterpret_cast<uint16_t *>(const_cast<char *>(Entry.first().data())),
      Entry.first().size() / 2);
  C = llvm::ConstantDataArray::get(VMContext, Arr);
} else {
  C = llvm::ConstantDataArray::getString(VMContext, Entry.first());
}

// Note: -fwritable-strings doesn't make the backing store strings of
// CFStrings writable. (See <rdar://problem/10657500>)
auto *GV =
    new llvm::GlobalVariable(getModule(), C->getType(), /*isConstant=*/true,
                             llvm::GlobalValue::PrivateLinkage, C, ".str");
GV->setUnnamedAddr(llvm::GlobalValue::UnnamedAddr::Global);
// Don't enforce the target's minimum global alignment, since the only use
// of the string is via this class initializer.
CharUnits Align = isUTF16 ? Context.getTypeAlignInChars(Context.ShortTy)
                          : Context.getTypeAlignInChars(Context.CharTy);
GV->setAlignment(Align.getAsAlign());

// FIXME: We set the section explicitly to avoid a bug in ld64 224.1.
// Without it LLVM can merge the string with a non unnamed_addr one during
// LTO.  Doing that changes the section it ends in, which surprises ld64.
if (Triple.isOSBinFormatMachO())
  GV->setSection(isUTF16 ? "__TEXT,__ustring"
                         : "__TEXT,__cstring,cstring_literals");
// Make sure the literal ends up in .rodata to allow for safe ICF and for
// the static linker to adjust permissions to read-only later on.
else if (Triple.isOSBinFormatELF())
  GV->setSection(".rodata");

// String.
llvm::Constant *Str =
    llvm::ConstantExpr::getGetElementPtr(GV->getValueType(), GV, Zeros);

if (isUTF16)
  // Cast the UTF16 string to the correct type.
  Str = llvm::ConstantExpr::getBitCast(Str, Int8PtrTy);
Fields.add(Str);

// String length.
llvm::IntegerType *LengthTy =
    llvm::IntegerType::get(getModule().getContext(),
                           Context.getTargetInfo().getLongWidth());
if (IsSwiftABI) {
  if (CFRuntime == LangOptions::CoreFoundationABI::Swift4_1 ||
      CFRuntime == LangOptions::CoreFoundationABI::Swift4_2)
    LengthTy = Int32Ty;
  else
    LengthTy = IntPtrTy;
}
Fields.addInt(LengthTy, StringLength);

// Swift ABI requires 8-byte alignment to ensure that the _Atomic(uint64_t) is
// properly aligned on 32-bit platforms.
CharUnits Alignment =
    IsSwiftABI ? Context.toCharUnitsFromBits(64) : getPointerAlign();

// The struct.
GV = Fields.finishAndCreateGlobal("_unnamed_cfstring_", Alignment,
                                  /*isConstant=*/false,
                                  llvm::GlobalVariable::PrivateLinkage);
GV->addAttribute("objc_arc_inert");
switch (Triple.getObjectFormat()) {
case llvm::Triple::UnknownObjectFormat:
  llvm_unreachable("unknown file format")::llvm::llvm_unreachable_internal("unknown file format", "/build/llvm-toolchain-snapshot-13~++20210726100616+dead50d4427c/clang/lib/CodeGen/CodeGenModule.cpp"
, 5232);
case llvm::Triple::GOFF:
  llvm_unreachable("GOFF is not yet implemented")::llvm::llvm_unreachable_internal("GOFF is not yet implemented"
, "/build/llvm-toolchain-snapshot-13~++20210726100616+dead50d4427c/clang/lib/CodeGen/CodeGenModule.cpp"
, 5234);
case llvm::Triple::XCOFF:
  llvm_unreachable("XCOFF is not yet implemented")::llvm::llvm_unreachable_internal("XCOFF is not yet implemented"
, "/build/llvm-toolchain-snapshot-13~++20210726100616+dead50d4427c/clang/lib/CodeGen/CodeGenModule.cpp"
, 5236);
case llvm::Triple::COFF:
case llvm::Triple::ELF:
case llvm::Triple::Wasm:
  GV->setSection("cfstring");
  break;
case llvm::Triple::MachO:
  GV->setSection("__DATA,__cfstring");
  break;
}
Entry.second = GV;

return ConstantAddress(GV, Alignment);
5249}

5251bool CodeGenModule::getExpressionLocationsEnabled() const {
return !CodeGenOpts.EmitCodeView || CodeGenOpts.DebugColumnInfo;
5253}

5255QualType CodeGenModule::getObjCFastEnumerationStateType() {
if (ObjCFastEnumerationStateType.isNull()) {
  RecordDecl *D = Context.buildImplicitRecord("__objcFastEnumerationState");
  D->startDefinition();

  QualType FieldTypes[] = {
    Context.UnsignedLongTy,
    Context.getPointerType(Context.getObjCIdType()),
    Context.getPointerType(Context.UnsignedLongTy),
    Context.getConstantArrayType(Context.UnsignedLongTy,
                         llvm::APInt(32, 5), nullptr, ArrayType::Normal, 0)
  };

  for (size_t i = 0; i < 4; ++i) {
    FieldDecl *Field = FieldDecl::Create(Context,
                                         D,
                                         SourceLocation(),
                                         SourceLocation(), nullptr,
                                         FieldTypes[i], /*TInfo=*/nullptr,
                                         /*BitWidth=*/nullptr,
                                         /*Mutable=*/false,
                                         ICIS_NoInit);
    Field->setAccess(AS_public);
    D->addDecl(Field);
  }

  D->completeDefinition();
  ObjCFastEnumerationStateType = Context.getTagDeclType(D);
}

return ObjCFastEnumerationStateType;
5286}

5288llvm::Constant *
5289CodeGenModule::GetConstantArrayFromStringLiteral(const StringLiteral *E) {
assert(!E->getType()->isPointerType() && "Strings are always arrays")(static_cast <bool> (!E->getType()->isPointerType
() && "Strings are always arrays") ? void (0) : __assert_fail
 ("!E->getType()->isPointerType() && \"Strings are always arrays\""
, "/build/llvm-toolchain-snapshot-13~++20210726100616+dead50d4427c/clang/lib/CodeGen/CodeGenModule.cpp"
, 5290, __extension__ __PRETTY_FUNCTION__));

// Don't emit it as the address of the string, emit the string data itself
// as an inline array.
if (E->getCharByteWidth() == 1) {
  SmallString<64> Str(E->getString());

  // Resize the string to the right size, which is indicated by its type.
  const ConstantArrayType *CAT = Context.getAsConstantArrayType(E->getType());
  Str.resize(CAT->getSize().getZExtValue());
  return llvm::ConstantDataArray::getString(VMContext, Str, false);
}

auto *AType = cast<llvm::ArrayType>(getTypes().ConvertType(E->getType()));
llvm::Type *ElemTy = AType->getElementType();
unsigned NumElements = AType->getNumElements();

// Wide strings have either 2-byte or 4-byte elements.
if (ElemTy->getPrimitiveSizeInBits() == 16) {
  SmallVector<uint16_t, 32> Elements;
  Elements.reserve(NumElements);

  for(unsigned i = 0, e = E->getLength(); i != e; ++i)
    Elements.push_back(E->getCodeUnit(i));
  Elements.resize(NumElements);
  return llvm::ConstantDataArray::get(VMContext, Elements);
}

assert(ElemTy->getPrimitiveSizeInBits() == 32)(static_cast <bool> (ElemTy->getPrimitiveSizeInBits(
) == 32) ? void (0) : __assert_fail ("ElemTy->getPrimitiveSizeInBits() == 32"
, "/build/llvm-toolchain-snapshot-13~++20210726100616+dead50d4427c/clang/lib/CodeGen/CodeGenModule.cpp"
, 5318, __extension__ __PRETTY_FUNCTION__));
SmallVector<uint32_t, 32> Elements;
Elements.reserve(NumElements);

for(unsigned i = 0, e = E->getLength(); i != e; ++i)
  Elements.push_back(E->getCodeUnit(i));
Elements.resize(NumElements);
return llvm::ConstantDataArray::get(VMContext, Elements);
5326}

5328static llvm::GlobalVariable *
5329GenerateStringLiteral(llvm::Constant *C, llvm::GlobalValue::LinkageTypes LT,
                    CodeGenModule &CGM, StringRef GlobalName,
                    CharUnits Alignment) {
unsigned AddrSpace = CGM.getContext().getTargetAddressSpace(
    CGM.GetGlobalConstantAddressSpace());

llvm::Module &M = CGM.getModule();
// Create a global variable for this string
auto *GV = new llvm::GlobalVariable(
    M, C->getType(), !CGM.getLangOpts().WritableStrings, LT, C, GlobalName,
    nullptr, llvm::GlobalVariable::NotThreadLocal, AddrSpace);
GV->setAlignment(Alignment.getAsAlign());
GV->setUnnamedAddr(llvm::GlobalValue::UnnamedAddr::Global);
if (GV->isWeakForLinker()) {
  assert(CGM.supportsCOMDAT() && "Only COFF uses weak string literals")(static_cast <bool> (CGM.supportsCOMDAT() && "Only COFF uses weak string literals"
) ? void (0) : __assert_fail ("CGM.supportsCOMDAT() && \"Only COFF uses weak string literals\""
, "/build/llvm-toolchain-snapshot-13~++20210726100616+dead50d4427c/clang/lib/CodeGen/CodeGenModule.cpp"
, 5343, __extension__ __PRETTY_FUNCTION__));
  GV->setComdat(M.getOrInsertComdat(GV->getName()));
}
CGM.setDSOLocal(GV);

return GV;
5349}

5351/// GetAddrOfConstantStringFromLiteral - Return a pointer to a
5352/// constant array for the given string literal.
5353ConstantAddress
5354CodeGenModule::GetAddrOfConstantStringFromLiteral(const StringLiteral *S,
                                                StringRef Name) {
CharUnits Alignment = getContext().getAlignOfGlobalVarInChars(S->getType());

llvm::Constant *C = GetConstantArrayFromStringLiteral(S);
llvm::GlobalVariable **Entry = nullptr;
if (!LangOpts.WritableStrings) {
  Entry = &ConstantStringMap[C];
  if (auto GV = *Entry) {
    if (Alignment.getQuantity() > GV->getAlignment())
      GV->setAlignment(Alignment.getAsAlign());
    return ConstantAddress(castStringLiteralToDefaultAddressSpace(*this, GV),
                           Alignment);
  }
}

SmallString<256> MangledNameBuffer;
StringRef GlobalVariableName;
llvm::GlobalValue::LinkageTypes LT;

// Mangle the string literal if that's how the ABI merges duplicate strings.
// Don't do it if they are writable, since we don't want writes in one TU to
// affect strings in another.
if (getCXXABI().getMangleContext().shouldMangleStringLiteral(S) &&
    !LangOpts.WritableStrings) {
  llvm::raw_svector_ostream Out(MangledNameBuffer);
  getCXXABI().getMangleContext().mangleStringLiteral(S, Out);
  LT = llvm::GlobalValue::LinkOnceODRLinkage;
  GlobalVariableName = MangledNameBuffer;
} else {
  LT = llvm::GlobalValue::PrivateLinkage;
  GlobalVariableName = Name;
}

auto GV = GenerateStringLiteral(C, LT, *this, GlobalVariableName, Alignment);
if (Entry)
  *Entry = GV;

SanitizerMD->reportGlobalToASan(GV, S->getStrTokenLoc(0), "<string literal>",
                                QualType());

return ConstantAddress(castStringLiteralToDefaultAddressSpace(*this, GV),
                       Alignment);
5397}

5399/// GetAddrOfConstantStringFromObjCEncode - Return a pointer to a constant
5400/// array for the given ObjCEncodeExpr node.
5401ConstantAddress
5402CodeGenModule::GetAddrOfConstantStringFromObjCEncode(const ObjCEncodeExpr *E) {
std::string Str;
getContext().getObjCEncodingForType(E->getEncodedType(), Str);

return GetAddrOfConstantCString(Str);
5407}

5409/// GetAddrOfConstantCString - Returns a pointer to a character array containing
5410/// the literal and a terminating '\0' character.
5411/// The result has pointer to array type.
5412ConstantAddress CodeGenModule::GetAddrOfConstantCString(
  const std::string &Str, const char *GlobalName) {
StringRef StrWithNull(Str.c_str(), Str.size() + 1);
CharUnits Alignment =
  getContext().getAlignOfGlobalVarInChars(getContext().CharTy);

llvm::Constant *C =
    llvm::ConstantDataArray::getString(getLLVMContext(), StrWithNull, false);

// Don't share any string literals if strings aren't constant.
llvm::GlobalVariable **Entry = nullptr;
if (!LangOpts.WritableStrings) {
  Entry = &ConstantStringMap[C];
  if (auto GV = *Entry) {
    if (Alignment.getQuantity() > GV->getAlignment())
      GV->setAlignment(Alignment.getAsAlign());
    return ConstantAddress(castStringLiteralToDefaultAddressSpace(*this, GV),
                           Alignment);
  }
}

// Get the default prefix if a name wasn't specified.
if (!GlobalName)
  GlobalName = ".str";
// Create a global variable for this.
auto GV = GenerateStringLiteral(C, llvm::GlobalValue::PrivateLinkage, *this,
                                GlobalName, Alignment);
if (Entry)
  *Entry = GV;

return ConstantAddress(castStringLiteralToDefaultAddressSpace(*this, GV),
                       Alignment);
5444}

5446ConstantAddress CodeGenModule::GetAddrOfGlobalTemporary(
  const MaterializeTemporaryExpr *E, const Expr *Init) {
assert((E->getStorageDuration() == SD_Static ||(static_cast <bool> ((E->getStorageDuration() == SD_Static
 || E->getStorageDuration() == SD_Thread) && "not a global temporary"
) ? void (0) : __assert_fail ("(E->getStorageDuration() == SD_Static || E->getStorageDuration() == SD_Thread) && \"not a global temporary\""
, "/build/llvm-toolchain-snapshot-13~++20210726100616+dead50d4427c/clang/lib/CodeGen/CodeGenModule.cpp"
, 5449, __extension__ __PRETTY_FUNCTION__))
        E->getStorageDuration() == SD_Thread) && "not a global temporary")(static_cast <bool> ((E->getStorageDuration() == SD_Static
 || E->getStorageDuration() == SD_Thread) && "not a global temporary"
) ? void (0) : __assert_fail ("(E->getStorageDuration() == SD_Static || E->getStorageDuration() == SD_Thread) && \"not a global temporary\""
, "/build/llvm-toolchain-snapshot-13~++20210726100616+dead50d4427c/clang/lib/CodeGen/CodeGenModule.cpp"
, 5449, __extension__ __PRETTY_FUNCTION__));
const auto *VD = cast<VarDecl>(E->getExtendingDecl());

// If we're not materializing a subobject of the temporary, keep the
// cv-qualifiers from the type of the MaterializeTemporaryExpr.
QualType MaterializedType = Init->getType();
if (Init == E->getSubExpr())
  MaterializedType = E->getType();

CharUnits Align = getContext().getTypeAlignInChars(MaterializedType);

auto InsertResult = MaterializedGlobalTemporaryMap.insert({E, nullptr});
if (!InsertResult.second) {
  // We've seen this before: either we already created it or we're in the
  // process of doing so.
  if (!InsertResult.first->second) {
    // We recursively re-entered this function, probably during emission of
    // the initializer. Create a placeholder. We'll clean this up in the
    // outer call, at the end of this function.
    llvm::Type *Type = getTypes().ConvertTypeForMem(MaterializedType);
    InsertResult.first->second = new llvm::GlobalVariable(
        getModule(), Type, false, llvm::GlobalVariable::InternalLinkage,
        nullptr);
  }
  return ConstantAddress(InsertResult.first->second, Align);
}

// FIXME: If an externally-visible declaration extends multiple temporaries,
// we need to give each temporary the same name in every translation unit (and
// we also need to make the temporaries externally-visible).
SmallString<256> Name;
llvm::raw_svector_ostream Out(Name);
getCXXABI().getMangleContext().mangleReferenceTemporary(
    VD, E->getManglingNumber(), Out);

APValue *Value = nullptr;
if (E->getStorageDuration() == SD_Static && VD && VD->evaluateValue()) {
  // If the initializer of the extending declaration is a constant
  // initializer, we should have a cached constant initializer for this
  // temporary. Note that this might have a different value from the value
  // computed by evaluating the initializer if the surrounding constant
  // expression modifies the temporary.
  Value = E->getOrCreateValue(false);
}

// Try evaluating it now, it might have a constant initializer.
Expr::EvalResult EvalResult;
if (!Value && Init->EvaluateAsRValue(EvalResult, getContext()) &&
    !EvalResult.hasSideEffects())
  Value = &EvalResult.Val;

LangAS AddrSpace =
    VD ? GetGlobalVarAddressSpace(VD) : MaterializedType.getAddressSpace();

Optional<ConstantEmitter> emitter;
llvm::Constant *InitialValue = nullptr;
bool Constant = false;
llvm::Type *Type;
if (Value) {
  // The temporary has a constant initializer, use it.
  emitter.emplace(*this);
  InitialValue = emitter->emitForInitializer(*Value, AddrSpace,
                                             MaterializedType);
  Constant = isTypeConstant(MaterializedType, /*ExcludeCtor*/Value);
  Type = InitialValue->getType();
} else {
  // No initializer, the initialization will be provided when we
  // initialize the declaration which performed lifetime extension.
  Type = getTypes().ConvertTypeForMem(MaterializedType);
}

// Create a global variable for this lifetime-extended temporary.
llvm::GlobalValue::LinkageTypes Linkage =
    getLLVMLinkageVarDefinition(VD, Constant);
if (Linkage == llvm::GlobalVariable::ExternalLinkage) {
  const VarDecl *InitVD;
  if (VD->isStaticDataMember() && VD->getAnyInitializer(InitVD) &&
      isa<CXXRecordDecl>(InitVD->getLexicalDeclContext())) {
    // Temporaries defined inside a class get linkonce_odr linkage because the
    // class can be defined in multiple translation units.
    Linkage = llvm::GlobalVariable::LinkOnceODRLinkage;
  } else {
    // There is no need for this temporary to have external linkage if the
    // VarDecl has external linkage.
    Linkage = llvm::GlobalVariable::InternalLinkage;
  }
}
auto TargetAS = getContext().getTargetAddressSpace(AddrSpace);
auto *GV = new llvm::GlobalVariable(
    getModule(), Type, Constant, Linkage, InitialValue, Name.c_str(),
    /*InsertBefore=*/nullptr, llvm::GlobalVariable::NotThreadLocal, TargetAS);
if (emitter) emitter->finalize(GV);
setGVProperties(GV, VD);
GV->setAlignment(Align.getAsAlign());
if (supportsCOMDAT() && GV->isWeakForLinker())
  GV->setComdat(TheModule.getOrInsertComdat(GV->getName()));
if (VD->getTLSKind())
  setTLSMode(GV, *VD);
llvm::Constant *CV = GV;
if (AddrSpace != LangAS::Default)
  CV = getTargetCodeGenInfo().performAddrSpaceCast(
      *this, GV, AddrSpace, LangAS::Default,
      Type->getPointerTo(
          getContext().getTargetAddressSpace(LangAS::Default)));

// Update the map with the new temporary. If we created a placeholder above,
// replace it with the new global now.
llvm::Constant *&Entry = MaterializedGlobalTemporaryMap[E];
if (Entry) {
  Entry->replaceAllUsesWith(
      llvm::ConstantExpr::getBitCast(CV, Entry->getType()));
  llvm::cast<llvm::GlobalVariable>(Entry)->eraseFromParent();
}
Entry = CV;

return ConstantAddress(CV, Align);
5565}

5567/// EmitObjCPropertyImplementations - Emit information for synthesized
5568/// properties for an implementation.
5569void CodeGenModule::EmitObjCPropertyImplementations(const
                                                  ObjCImplementationDecl *D) {
for (const auto *PID : D->property_impls()) {
  // Dynamic is just for type-checking.
  if (PID->getPropertyImplementation() == ObjCPropertyImplDecl::Synthesize) {
    ObjCPropertyDecl *PD = PID->getPropertyDecl();

    // Determine which methods need to be implemented, some may have
    // been overridden. Note that ::isPropertyAccessor is not the method
    // we want, that just indicates if the decl came from a
    // property. What we want to know is if the method is defined in
    // this implementation.
    auto *Getter = PID->getGetterMethodDecl();
    if (!Getter || Getter->isSynthesizedAccessorStub())
      CodeGenFunction(*this).GenerateObjCGetter(
          const_cast<ObjCImplementationDecl *>(D), PID);
    auto *Setter = PID->getSetterMethodDecl();
    if (!PD->isReadOnly() && (!Setter || Setter->isSynthesizedAccessorStub()))
      CodeGenFunction(*this).GenerateObjCSetter(
                               const_cast<ObjCImplementationDecl *>(D), PID);
  }
}
5591}

5593static bool needsDestructMethod(ObjCImplementationDecl *impl) {
const ObjCInterfaceDecl *iface = impl->getClassInterface();
for (const ObjCIvarDecl *ivar = iface->all_declared_ivar_begin();
     ivar; ivar = ivar->getNextIvar())
  if (ivar->getType().isDestructedType())
    return true;

return false;
5601}

5603static bool AllTrivialInitializers(CodeGenModule &CGM,
                                 ObjCImplementationDecl *D) {
CodeGenFunction CGF(CGM);
for (ObjCImplementationDecl::init_iterator B = D->init_begin(),
     E = D->init_end(); B != E; ++B) {
  CXXCtorInitializer *CtorInitExp = *B;
  Expr *Init = CtorInitExp->getInit();
  if (!CGF.isTrivialInitializer(Init))
    return false;
}
return true;
5614}

5616/// EmitObjCIvarInitializations - Emit information for ivar initialization
5617/// for an implementation.
5618void CodeGenModule::EmitObjCIvarInitializations(ObjCImplementationDecl *D) {
// We might need a .cxx_destruct even if we don't have any ivar initializers.
if (needsDestructMethod(D)) {
  IdentifierInfo *II = &getContext().Idents.get(".cxx_destruct");
  Selector cxxSelector = getContext().Selectors.getSelector(0, &II);
  ObjCMethodDecl *DTORMethod = ObjCMethodDecl::Create(
      getContext(), D->getLocation(), D->getLocation(), cxxSelector,
      getContext().VoidTy, nullptr, D,
      /*isInstance=*/true, /*isVariadic=*/false,
      /*isPropertyAccessor=*/true, /*isSynthesizedAccessorStub=*/false,
      /*isImplicitlyDeclared=*/true,
      /*isDefined=*/false, ObjCMethodDecl::Required);
  D->addInstanceMethod(DTORMethod);
  CodeGenFunction(*this).GenerateObjCCtorDtorMethod(D, DTORMethod, false);
  D->setHasDestructors(true);
}

// If the implementation doesn't have any ivar initializers, we don't need
// a .cxx_construct.
if (D->getNumIvarInitializers() == 0 ||
    AllTrivialInitializers(*this, D))
  return;

IdentifierInfo *II = &getContext().Idents.get(".cxx_construct");
Selector cxxSelector = getContext().Selectors.getSelector(0, &II);
// The constructor returns 'self'.
ObjCMethodDecl *CTORMethod = ObjCMethodDecl::Create(
    getContext(), D->getLocation(), D->getLocation(), cxxSelector,
    getContext().getObjCIdType(), nullptr, D, /*isInstance=*/true,
    /*isVariadic=*/false,
    /*isPropertyAccessor=*/true, /*isSynthesizedAccessorStub=*/false,
    /*isImplicitlyDeclared=*/true,
    /*isDefined=*/false, ObjCMethodDecl::Required);
D->addInstanceMethod(CTORMethod);
CodeGenFunction(*this).GenerateObjCCtorDtorMethod(D, CTORMethod, true);
D->setHasNonZeroConstructors(true);
5654}

5656// EmitLinkageSpec - Emit all declarations in a linkage spec.
5657void CodeGenModule::EmitLinkageSpec(const LinkageSpecDecl *LSD) {
if (LSD->getLanguage() != LinkageSpecDecl::lang_c &&
    LSD->getLanguage() != LinkageSpecDecl::lang_cxx) {
  ErrorUnsupported(LSD, "linkage spec");
  return;
}

EmitDeclContext(LSD);
5665}

5667void CodeGenModule::EmitDeclContext(const DeclContext *DC) {
for (auto *I : DC->decls()) {
  // Unlike other DeclContexts, the contents of an ObjCImplDecl at TU scope
  // are themselves considered "top-level", so EmitTopLevelDecl on an
  // ObjCImplDecl does not recursively visit them. We need to do that in
  // case they're nested inside another construct (LinkageSpecDecl /
  // ExportDecl) that does stop them from being considered "top-level".
  if (auto *OID = dyn_cast<ObjCImplDecl>(I)) {
    for (auto *M : OID->methods())
      EmitTopLevelDecl(M);
  }

  EmitTopLevelDecl(I);
}
5681}

5683/// EmitTopLevelDecl - Emit code for a single top level declaration.
5684void CodeGenModule::EmitTopLevelDecl(Decl *D) {
// Ignore dependent declarations.
if (D->isTemplated())
  return;

// Consteval function shouldn't be emitted.
if (auto *FD = dyn_cast<FunctionDecl>(D))
  if (FD->isConsteval())
    return;

switch (D->getKind()) {
case Decl::CXXConversion:
case Decl::CXXMethod:
case Decl::Function:
  EmitGlobal(cast<FunctionDecl>(D));
  // Always provide some coverage mapping
  // even for the functions that aren't emitted.
  AddDeferredUnusedCoverageMapping(D);
  break;

case Decl::CXXDeductionGuide:
  // Function-like, but does not result in code emission.
  break;

case Decl::Var:
case Decl::Decomposition:
case Decl::VarTemplateSpecialization:
  EmitGlobal(cast<VarDecl>(D));
  if (auto *DD = dyn_cast<DecompositionDecl>(D))
    for (auto *B : DD->bindings())
      if (auto *HD = B->getHoldingVar())
        EmitGlobal(HD);
  break;

// Indirect fields from global anonymous structs and unions can be
// ignored; only the actual variable requires IR gen support.
case Decl::IndirectField:
  break;

// C++ Decls
case Decl::Namespace:
  EmitDeclContext(cast<NamespaceDecl>(D));
  break;
case Decl::ClassTemplateSpecialization: {
  const auto *Spec = cast<ClassTemplateSpecializationDecl>(D);
  if (CGDebugInfo *DI = getModuleDebugInfo())
    if (Spec->getSpecializationKind() ==
            TSK_ExplicitInstantiationDefinition &&
        Spec->hasDefinition())
      DI->completeTemplateDefinition(*Spec);
} LLVM_FALLTHROUGH[[gnu::fallthrough]];
case Decl::CXXRecord: {
  CXXRecordDecl *CRD = cast<CXXRecordDecl>(D);
  if (CGDebugInfo *DI = getModuleDebugInfo()) {
    if (CRD->hasDefinition())
      DI->EmitAndRetainType(getContext().getRecordType(cast<RecordDecl>(D)));
    if (auto *ES = D->getASTContext().getExternalSource())
      if (ES->hasExternalDefinitions(D) == ExternalASTSource::EK_Never)
        DI->completeUnusedClass(*CRD);
  }
  // Emit any static data members, they may be definitions.
  for (auto *I : CRD->decls())
    if (isa<VarDecl>(I) || isa<CXXRecordDecl>(I))
      EmitTopLevelDecl(I);
  break;
}
  // No code generation needed.
case Decl::UsingShadow:
case Decl::ClassTemplate:
case Decl::VarTemplate:
case Decl::Concept:
case Decl::VarTemplatePartialSpecialization:
case Decl::FunctionTemplate:
case Decl::TypeAliasTemplate:
case Decl::Block:
case Decl::Empty:
case Decl::Binding:
  break;
case Decl::Using:          // using X; [C++]
  if (CGDebugInfo *DI = getModuleDebugInfo())
      DI->EmitUsingDecl(cast<UsingDecl>(*D));
  break;
case Decl::UsingEnum: // using enum X; [C++]
  if (CGDebugInfo *DI = getModuleDebugInfo())
    DI->EmitUsingEnumDecl(cast<UsingEnumDecl>(*D));
  break;
case Decl::NamespaceAlias:
  if (CGDebugInfo *DI = getModuleDebugInfo())
      DI->EmitNamespaceAlias(cast<NamespaceAliasDecl>(*D));
  break;
case Decl::UsingDirective: // using namespace X; [C++]
  if (CGDebugInfo *DI = getModuleDebugInfo())
    DI->EmitUsingDirective(cast<UsingDirectiveDecl>(*D));
  break;
case Decl::CXXConstructor:
  getCXXABI().EmitCXXConstructors(cast<CXXConstructorDecl>(D));
  break;
case Decl::CXXDestructor:
  getCXXABI().EmitCXXDestructors(cast<CXXDestructorDecl>(D));
  break;

case Decl::StaticAssert:
  // Nothing to do.
  break;

// Objective-C Decls

// Forward declarations, no (immediate) code generation.
case Decl::ObjCInterface:
case Decl::ObjCCategory:
  break;

case Decl::ObjCProtocol: {
  auto *Proto = cast<ObjCProtocolDecl>(D);
  if (Proto->isThisDeclarationADefinition())
    ObjCRuntime->GenerateProtocol(Proto);
  break;
}

case Decl::ObjCCategoryImpl:
  // Categories have properties but don't support synthesize so we
  // can ignore them here.
  ObjCRuntime->GenerateCategory(cast<ObjCCategoryImplDecl>(D));
  break;

case Decl::ObjCImplementation: {
  auto *OMD = cast<ObjCImplementationDecl>(D);
  EmitObjCPropertyImplementations(OMD);
  EmitObjCIvarInitializations(OMD);
  ObjCRuntime->GenerateClass(OMD);
  // Emit global variable debug information.
  if (CGDebugInfo *DI = getModuleDebugInfo())
    if (getCodeGenOpts().hasReducedDebugInfo())
      DI->getOrCreateInterfaceType(getContext().getObjCInterfaceType(
          OMD->getClassInterface()), OMD->getLocation());
  break;
}
case Decl::ObjCMethod: {
  auto *OMD = cast<ObjCMethodDecl>(D);
  // If this is not a prototype, emit the body.
  if (OMD->getBody())
    CodeGenFunction(*this).GenerateObjCMethod(OMD);
  break;
}
case Decl::ObjCCompatibleAlias:
  ObjCRuntime->RegisterAlias(cast<ObjCCompatibleAliasDecl>(D));
  break;

case Decl::PragmaComment: {
  const auto *PCD = cast<PragmaCommentDecl>(D);
  switch (PCD->getCommentKind()) {
  case PCK_Unknown:
    llvm_unreachable("unexpected pragma comment kind")::llvm::llvm_unreachable_internal("unexpected pragma comment kind"
, "/build/llvm-toolchain-snapshot-13~++20210726100616+dead50d4427c/clang/lib/CodeGen/CodeGenModule.cpp"
, 5836);
  case PCK_Linker:
    AppendLinkerOptions(PCD->getArg());
    break;
  case PCK_Lib:
      AddDependentLib(PCD->getArg());
    break;
  case PCK_Compiler:
  case PCK_ExeStr:
  case PCK_User:
    break; // We ignore all of these.
  }
  break;
}

case Decl::PragmaDetectMismatch: {
  const auto *PDMD = cast<PragmaDetectMismatchDecl>(D);
  AddDetectMismatch(PDMD->getName(), PDMD->getValue());
  break;
}

case Decl::LinkageSpec:
  EmitLinkageSpec(cast<LinkageSpecDecl>(D));
  break;

case Decl::FileScopeAsm: {
  // File-scope asm is ignored during device-side CUDA compilation.
  if (LangOpts.CUDA && LangOpts.CUDAIsDevice)
    break;
  // File-scope asm is ignored during device-side OpenMP compilation.
  if (LangOpts.OpenMPIsDevice)
    break;
  // File-scope asm is ignored during device-side SYCL compilation.
  if (LangOpts.SYCLIsDevice)
    break;
  auto *AD = cast<FileScopeAsmDecl>(D);
  getModule().appendModuleInlineAsm(AD->getAsmString()->getString());
  break;
}

case Decl::Import: {
  auto *Import = cast<ImportDecl>(D);

  // If we've already imported this module, we're done.
  if (!ImportedModules.insert(Import->getImportedModule()))
    break;

  // Emit debug information for direct imports.
  if (!Import->getImportedOwningModule()) {
    if (CGDebugInfo *DI = getModuleDebugInfo())
      DI->EmitImportDecl(*Import);
  }

  // Find all of the submodules and emit the module initializers.
  llvm::SmallPtrSet<clang::Module *, 16> Visited;
  SmallVector<clang::Module *, 16> Stack;
  Visited.insert(Import->getImportedModule());
  Stack.push_back(Import->getImportedModule());

  while (!Stack.empty()) {
    clang::Module *Mod = Stack.pop_back_val();
    if (!EmittedModuleInitializers.insert(Mod).second)
      continue;

    for (auto *D : Context.getModuleInitializers(Mod))
      EmitTopLevelDecl(D);

    // Visit the submodules of this module.
    for (clang::Module::submodule_iterator Sub = Mod->submodule_begin(),
                                           SubEnd = Mod->submodule_end();
         Sub != SubEnd; ++Sub) {
      // Skip explicit children; they need to be explicitly imported to emit
      // the initializers.
      if ((*Sub)->IsExplicit)
        continue;

      if (Visited.insert(*Sub).second)
        Stack.push_back(*Sub);
    }
  }
  break;
}

case Decl::Export:
  EmitDeclContext(cast<ExportDecl>(D));
  break;

case Decl::OMPThreadPrivate:
  EmitOMPThreadPrivateDecl(cast<OMPThreadPrivateDecl>(D));
  break;

case Decl::OMPAllocate:
  EmitOMPAllocateDecl(cast<OMPAllocateDecl>(D));
  break;

case Decl::OMPDeclareReduction:
  EmitOMPDeclareReduction(cast<OMPDeclareReductionDecl>(D));
  break;

case Decl::OMPDeclareMapper:
  EmitOMPDeclareMapper(cast<OMPDeclareMapperDecl>(D));
  break;

case Decl::OMPRequires:
  EmitOMPRequiresDecl(cast<OMPRequiresDecl>(D));
  break;

case Decl::Typedef:
case Decl::TypeAlias: // using foo = bar; [C++11]
  if (CGDebugInfo *DI = getModuleDebugInfo())
    DI->EmitAndRetainType(
        getContext().getTypedefType(cast<TypedefNameDecl>(D)));
  break;

case Decl::Record:
  if (CGDebugInfo *DI = getModuleDebugInfo())
    if (cast<RecordDecl>(D)->getDefinition())
      DI->EmitAndRetainType(getContext().getRecordType(cast<RecordDecl>(D)));
  break;

case Decl::Enum:
  if (CGDebugInfo *DI = getModuleDebugInfo())
    if (cast<EnumDecl>(D)->getDefinition())
      DI->EmitAndRetainType(getContext().getEnumType(cast<EnumDecl>(D)));
  break;

default:
  // Make sure we handled everything we should, every other kind is a
  // non-top-level decl.  FIXME: Would be nice to have an isTopLevelDeclKind
  // function. Need to recode Decl::Kind to do that easily.
  assert(isa<TypeDecl>(D) && "Unsupported decl kind")(static_cast <bool> (isa<TypeDecl>(D) && "Unsupported decl kind"
) ? void (0) : __assert_fail ("isa<TypeDecl>(D) && \"Unsupported decl kind\""
, "/build/llvm-toolchain-snapshot-13~++20210726100616+dead50d4427c/clang/lib/CodeGen/CodeGenModule.cpp"
, 5966, __extension__ __PRETTY_FUNCTION__));
  break;
}
5969}

5971void CodeGenModule::AddDeferredUnusedCoverageMapping(Decl *D) {
// Do we need to generate coverage mapping?
if (!CodeGenOpts.CoverageMapping)
  return;
switch (D->getKind()) {
case Decl::CXXConversion:
case Decl::CXXMethod:
case Decl::Function:
case Decl::ObjCMethod:
case Decl::CXXConstructor:
case Decl::CXXDestructor: {
  if (!cast<FunctionDecl>(D)->doesThisDeclarationHaveABody())
    break;
  SourceManager &SM = getContext().getSourceManager();
  if (LimitedCoverage && SM.getMainFileID() != SM.getFileID(D->getBeginLoc()))
    break;
  auto I = DeferredEmptyCoverageMappingDecls.find(D);
  if (I == DeferredEmptyCoverageMappingDecls.end())
    DeferredEmptyCoverageMappingDecls[D] = true;
  break;
}
default:
  break;
};
5995}

5997void CodeGenModule::ClearUnusedCoverageMapping(const Decl *D) {
// Do we need to generate coverage mapping?
if (!CodeGenOpts.CoverageMapping)
  return;
if (const auto *Fn = dyn_cast<FunctionDecl>(D)) {
  if (Fn->isTemplateInstantiation())
    ClearUnusedCoverageMapping(Fn->getTemplateInstantiationPattern());
}
auto I = DeferredEmptyCoverageMappingDecls.find(D);
if (I == DeferredEmptyCoverageMappingDecls.end())
  DeferredEmptyCoverageMappingDecls[D] = false;
else
  I->second = false;
6010}

6012void CodeGenModule::EmitDeferredUnusedCoverageMappings() {
// We call takeVector() here to avoid use-after-free.
// FIXME: DeferredEmptyCoverageMappingDecls is getting mutated because
// we deserialize function bodies to emit coverage info for them, and that
// deserializes more declarations. How should we handle that case?
for (const auto &Entry : DeferredEmptyCoverageMappingDecls.takeVector()) {
  if (!Entry.second)
    continue;
  const Decl *D = Entry.first;
  switch (D->getKind()) {
  case Decl::CXXConversion:
  case Decl::CXXMethod:
  case Decl::Function:
  case Decl::ObjCMethod: {
    CodeGenPGO PGO(*this);
    GlobalDecl GD(cast<FunctionDecl>(D));
    PGO.emitEmptyCounterMapping(D, getMangledName(GD),
                                getFunctionLinkage(GD));
    break;
  }
  case Decl::CXXConstructor: {
    CodeGenPGO PGO(*this);
    GlobalDecl GD(cast<CXXConstructorDecl>(D), Ctor_Base);
    PGO.emitEmptyCounterMapping(D, getMangledName(GD),
                                getFunctionLinkage(GD));
    break;
  }
  case Decl::CXXDestructor: {
    CodeGenPGO PGO(*this);
    GlobalDecl GD(cast<CXXDestructorDecl>(D), Dtor_Base);
    PGO.emitEmptyCounterMapping(D, getMangledName(GD),
                                getFunctionLinkage(GD));
    break;
  }
  default:
    break;
  };
}
6050}

6052void CodeGenModule::EmitMainVoidAlias() {
// In order to transition away from "__original_main" gracefully, emit an
// alias for "main" in the no-argument case so that libc can detect when
// new-style no-argument main is in used.
if (llvm::Function *F = getModule().getFunction("main")) {
  if (!F->isDeclaration() && F->arg_size() == 0 && !F->isVarArg() &&
      F->getReturnType()->isIntegerTy(Context.getTargetInfo().getIntWidth()))
    addUsedGlobal(llvm::GlobalAlias::create("__main_void", F));
}
6061}

6063/// Turns the given pointer into a constant.
6064static llvm::Constant *GetPointerConstant(llvm::LLVMContext &Context,
                                        const void *Ptr) {
uintptr_t PtrInt = reinterpret_cast<uintptr_t>(Ptr);
llvm::Type *i64 = llvm::Type::getInt64Ty(Context);
return llvm::ConstantInt::get(i64, PtrInt);
6069}

6071static void EmitGlobalDeclMetadata(CodeGenModule &CGM,
                                 llvm::NamedMDNode *&GlobalMetadata,
                                 GlobalDecl D,
                                 llvm::GlobalValue *Addr) {
if (!GlobalMetadata)
  GlobalMetadata =
    CGM.getModule().getOrInsertNamedMetadata("clang.global.decl.ptrs");

// TODO: should we report variant information for ctors/dtors?
llvm::Metadata *Ops[] = {llvm::ConstantAsMetadata::get(Addr),
                         llvm::ConstantAsMetadata::get(GetPointerConstant(
                             CGM.getLLVMContext(), D.getDecl()))};
GlobalMetadata->addOperand(llvm::MDNode::get(CGM.getLLVMContext(), Ops));
6084}

6086/// For each function which is declared within an extern "C" region and marked
6087/// as 'used', but has internal linkage, create an alias from the unmangled
6088/// name to the mangled name if possible. People expect to be able to refer
6089/// to such functions with an unmangled name from inline assembly within the
6090/// same translation unit.
6091void CodeGenModule::EmitStaticExternCAliases() {
if (!getTargetCodeGenInfo().shouldEmitStaticExternCAliases())
  return;
for (auto &I : StaticExternCValues) {
  IdentifierInfo *Name = I.first;
  llvm::GlobalValue *Val = I.second;
  if (Val && !getModule().getNamedValue(Name->getName()))
    addCompilerUsedGlobal(llvm::GlobalAlias::create(Name->getName(), Val));
}
6100}

6102bool CodeGenModule::lookupRepresentativeDecl(StringRef MangledName,
                                           GlobalDecl &Result) const {
auto Res = Manglings.find(MangledName);
if (Res == Manglings.end())
  return false;
Result = Res->getValue();
return true;
6109}

6111/// Emits metadata nodes associating all the global values in the
6112/// current module with the Decls they came from.  This is useful for
6113/// projects using IR gen as a subroutine.
6114///
6115/// Since there's currently no way to associate an MDNode directly
6116/// with an llvm::GlobalValue, we create a global named metadata
6117/// with the name 'clang.global.decl.ptrs'.
6118void CodeGenModule::EmitDeclMetadata() {
llvm::NamedMDNode *GlobalMetadata = nullptr;

for (auto &I : MangledDeclNames) {
  llvm::GlobalValue *Addr = getModule().getNamedValue(I.second);
  // Some mangled names don't necessarily have an associated GlobalValue
  // in this module, e.g. if we mangled it for DebugInfo.
  if (Addr)
    EmitGlobalDeclMetadata(*this, GlobalMetadata, I.first, Addr);
}
6128}

6130/// Emits metadata nodes for all the local variables in the current
6131/// function.
6132void CodeGenFunction::EmitDeclMetadata() {
if (LocalDeclMap.empty()) return;

llvm::LLVMContext &Context = getLLVMContext();

// Find the unique metadata ID for this name.
unsigned DeclPtrKind = Context.getMDKindID("clang.decl.ptr");

llvm::NamedMDNode *GlobalMetadata = nullptr;

for (auto &I : LocalDeclMap) {
  const Decl *D = I.first;
  llvm::Value *Addr = I.second.getPointer();
  if (auto *Alloca = dyn_cast<llvm::AllocaInst>(Addr)) {
    llvm::Value *DAddr = GetPointerConstant(getLLVMContext(), D);
    Alloca->setMetadata(
        DeclPtrKind, llvm::MDNode::get(
                         Context, llvm::ValueAsMetadata::getConstant(DAddr)));
  } else if (auto *GV = dyn_cast<llvm::GlobalValue>(Addr)) {
    GlobalDecl GD = GlobalDecl(cast<VarDecl>(D));
    EmitGlobalDeclMetadata(CGM, GlobalMetadata, GD, GV);
  }
}
6155}

6157void CodeGenModule::EmitVersionIdentMetadata() {
llvm::NamedMDNode *IdentMetadata =
  TheModule.getOrInsertNamedMetadata("llvm.ident");
std::string Version = getClangFullVersion();
llvm::LLVMContext &Ctx = TheModule.getContext();

llvm::Metadata *IdentNode[] = {llvm::MDString::get(Ctx, Version)};
IdentMetadata->addOperand(llvm::MDNode::get(Ctx, IdentNode));
6165}

6167void CodeGenModule::EmitCommandLineMetadata() {
llvm::NamedMDNode *CommandLineMetadata =
  TheModule.getOrInsertNamedMetadata("llvm.commandline");
std::string CommandLine = getCodeGenOpts().RecordCommandLine;
llvm::LLVMContext &Ctx = TheModule.getContext();

llvm::Metadata *CommandLineNode[] = {llvm::MDString::get(Ctx, CommandLine)};
CommandLineMetadata->addOperand(llvm::MDNode::get(Ctx, CommandLineNode));
6175}

6177void CodeGenModule::EmitCoverageFile() {
if (getCodeGenOpts().CoverageDataFile.empty() &&
    getCodeGenOpts().CoverageNotesFile.empty())
  return;

llvm::NamedMDNode *CUNode = TheModule.getNamedMetadata("llvm.dbg.cu");
if (!CUNode)
  return;

llvm::NamedMDNode *GCov = TheModule.getOrInsertNamedMetadata("llvm.gcov");
llvm::LLVMContext &Ctx = TheModule.getContext();
auto *CoverageDataFile =
    llvm::MDString::get(Ctx, getCodeGenOpts().CoverageDataFile);
auto *CoverageNotesFile =
    llvm::MDString::get(Ctx, getCodeGenOpts().CoverageNotesFile);
for (int i = 0, e = CUNode->getNumOperands(); i != e; ++i) {
  llvm::MDNode *CU = CUNode->getOperand(i);
  llvm::Metadata *Elts[] = {CoverageNotesFile, CoverageDataFile, CU};
  GCov->addOperand(llvm::MDNode::get(Ctx, Elts));
}
6197}

6199llvm::Constant *CodeGenModule::GetAddrOfRTTIDescriptor(QualType Ty,
                                                     bool ForEH) {
// Return a bogus pointer if RTTI is disabled, unless it's for EH.
// FIXME: should we even be calling this method if RTTI is disabled
// and it's not for EH?
if ((!ForEH && !getLangOpts().RTTI) || getLangOpts().CUDAIsDevice ||
    (getLangOpts().OpenMP && getLangOpts().OpenMPIsDevice &&
     getTriple().isNVPTX()))
  return llvm::Constant::getNullValue(Int8PtrTy);

if (ForEH && Ty->isObjCObjectPointerType() &&
    LangOpts.ObjCRuntime.isGNUFamily())
  return ObjCRuntime->GetEHType(Ty);

return getCXXABI().getAddrOfRTTIDescriptor(Ty);
6214}

6216void CodeGenModule::EmitOMPThreadPrivateDecl(const OMPThreadPrivateDecl *D) {
// Do not emit threadprivates in simd-only mode.
if (LangOpts.OpenMP && LangOpts.OpenMPSimd)
  return;
for (auto RefExpr : D->varlists()) {
  auto *VD = cast<VarDecl>(cast<DeclRefExpr>(RefExpr)->getDecl());
  bool PerformInit =
      VD->getAnyInitializer() &&
      !VD->getAnyInitializer()->isConstantInitializer(getContext(),
                                                      /*ForRef=*/false);

  Address Addr(GetAddrOfGlobalVar(VD), getContext().getDeclAlign(VD));
  if (auto InitFunction = getOpenMPRuntime().emitThreadPrivateVarDefinition(
          VD, Addr, RefExpr->getBeginLoc(), PerformInit))
    CXXGlobalInits.push_back(InitFunction);
}
6232}

6234llvm::Metadata *
6235CodeGenModule::CreateMetadataIdentifierImpl(QualType T, MetadataTypeMap &Map,
                                          StringRef Suffix) {
llvm::Metadata *&InternalId = Map[T.getCanonicalType()];
if (InternalId)
  return InternalId;

if (isExternallyVisible(T->getLinkage())) {
  std::string OutName;
  llvm::raw_string_ostream Out(OutName);
  getCXXABI().getMangleContext().mangleTypeName(T, Out);
  Out << Suffix;

  InternalId = llvm::MDString::get(getLLVMContext(), Out.str());
} else {
  InternalId = llvm::MDNode::getDistinct(getLLVMContext(),
                                         llvm::ArrayRef<llvm::Metadata *>());
}

return InternalId;
6254}

6256llvm::Metadata *CodeGenModule::CreateMetadataIdentifierForType(QualType T) {
return CreateMetadataIdentifierImpl(T, MetadataIdMap, "");
6258}

6260llvm::Metadata *
6261CodeGenModule::CreateMetadataIdentifierForVirtualMemPtrType(QualType T) {
return CreateMetadataIdentifierImpl(T, VirtualMetadataIdMap, ".virtual");
6263}

6265// Generalize pointer types to a void pointer with the qualifiers of the
6266// originally pointed-to type, e.g. 'const char *' and 'char * const *'
6267// generalize to 'const void *' while 'char *' and 'const char **' generalize to
6268// 'void *'.
6269static QualType GeneralizeType(ASTContext &Ctx, QualType Ty) {
if (!Ty->isPointerType())
  return Ty;

return Ctx.getPointerType(
    QualType(Ctx.VoidTy).withCVRQualifiers(
        Ty->getPointeeType().getCVRQualifiers()));
6276}

6278// Apply type generalization to a FunctionType's return and argument types
6279static QualType GeneralizeFunctionType(ASTContext &Ctx, QualType Ty) {
if (auto *FnType = Ty->getAs<FunctionProtoType>()) {
  SmallVector<QualType, 8> GeneralizedParams;
  for (auto &Param : FnType->param_types())
    GeneralizedParams.push_back(GeneralizeType(Ctx, Param));

  return Ctx.getFunctionType(
      GeneralizeType(Ctx, FnType->getReturnType()),
      GeneralizedParams, FnType->getExtProtoInfo());
}

if (auto *FnType = Ty->getAs<FunctionNoProtoType>())
  return Ctx.getFunctionNoProtoType(
      GeneralizeType(Ctx, FnType->getReturnType()));

llvm_unreachable("Encountered unknown FunctionType")::llvm::llvm_unreachable_internal("Encountered unknown FunctionType"
, "/build/llvm-toolchain-snapshot-13~++20210726100616+dead50d4427c/clang/lib/CodeGen/CodeGenModule.cpp"
, 6294);
6295}

6297llvm::Metadata *CodeGenModule::CreateMetadataIdentifierGeneralized(QualType T) {
return CreateMetadataIdentifierImpl(GeneralizeFunctionType(getContext(), T),
                                    GeneralizedMetadataIdMap, ".generalized");
6300}

6302/// Returns whether this module needs the "all-vtables" type identifier.
6303bool CodeGenModule::NeedAllVtablesTypeId() const {
// Returns true if at least one of vtable-based CFI checkers is enabled and
// is not in the trapping mode.
return ((LangOpts.Sanitize.has(SanitizerKind::CFIVCall) &&
         !CodeGenOpts.SanitizeTrap.has(SanitizerKind::CFIVCall)) ||
        (LangOpts.Sanitize.has(SanitizerKind::CFINVCall) &&
         !CodeGenOpts.SanitizeTrap.has(SanitizerKind::CFINVCall)) ||
        (LangOpts.Sanitize.has(SanitizerKind::CFIDerivedCast) &&
         !CodeGenOpts.SanitizeTrap.has(SanitizerKind::CFIDerivedCast)) ||
        (LangOpts.Sanitize.has(SanitizerKind::CFIUnrelatedCast) &&
         !CodeGenOpts.SanitizeTrap.has(SanitizerKind::CFIUnrelatedCast)));
6314}

6316void CodeGenModule::AddVTableTypeMetadata(llvm::GlobalVariable *VTable,
                                        CharUnits Offset,
                                        const CXXRecordDecl *RD) {
llvm::Metadata *MD =
    CreateMetadataIdentifierForType(QualType(RD->getTypeForDecl(), 0));
VTable->addTypeMetadata(Offset.getQuantity(), MD);

if (CodeGenOpts.SanitizeCfiCrossDso)
  if (auto CrossDsoTypeId = CreateCrossDsoCfiTypeId(MD))
    VTable->addTypeMetadata(Offset.getQuantity(),
                            llvm::ConstantAsMetadata::get(CrossDsoTypeId));

if (NeedAllVtablesTypeId()) {
  llvm::Metadata *MD = llvm::MDString::get(getLLVMContext(), "all-vtables");
  VTable->addTypeMetadata(Offset.getQuantity(), MD);
}
6332}

6334llvm::SanitizerStatReport &CodeGenModule::getSanStats() {
if (!SanStats)
  SanStats = std::make_unique<llvm::SanitizerStatReport>(&getModule());

return *SanStats;
6339}

6341llvm::Value *
6342CodeGenModule::createOpenCLIntToSamplerConversion(const Expr *E,
                                                CodeGenFunction &CGF) {
llvm::Constant *C = ConstantEmitter(CGF).emitAbstract(E, E->getType());
auto *SamplerT = getOpenCLRuntime().getSamplerType(E->getType().getTypePtr());
auto *FTy = llvm::FunctionType::get(SamplerT, {C->getType()}, false);
auto *Call = CGF.EmitRuntimeCall(
    CreateRuntimeFunction(FTy, "__translate_sampler_initializer"), {C});
return Call;
6350}

6352CharUnits CodeGenModule::getNaturalPointeeTypeAlignment(
  QualType T, LValueBaseInfo *BaseInfo, TBAAAccessInfo *TBAAInfo) {
return getNaturalTypeAlignment(T->getPointeeType(), BaseInfo, TBAAInfo,
                               /* forPointeeType= */ true);
6356}

6358CharUnits CodeGenModule::getNaturalTypeAlignment(QualType T,
                                               LValueBaseInfo *BaseInfo,
                                               TBAAAccessInfo *TBAAInfo,
                                               bool forPointeeType) {
if (TBAAInfo)
  *TBAAInfo = getTBAAAccessInfo(T);

// FIXME: This duplicates logic in ASTContext::getTypeAlignIfKnown. But
// that doesn't return the information we need to compute BaseInfo.

// Honor alignment typedef attributes even on incomplete types.
// We also honor them straight for C++ class types, even as pointees;
// there's an expressivity gap here.
if (auto TT = T->getAs<TypedefType>()) {
  if (auto Align = TT->getDecl()->getMaxAlignment()) {
    if (BaseInfo)
      *BaseInfo = LValueBaseInfo(AlignmentSource::AttributedType);
    return getContext().toCharUnitsFromBits(Align);
  }
}

bool AlignForArray = T->isArrayType();

// Analyze the base element type, so we don't get confused by incomplete
// array types.
T = getContext().getBaseElementType(T);

if (T->isIncompleteType()) {
  // We could try to replicate the logic from
  // ASTContext::getTypeAlignIfKnown, but nothing uses the alignment if the
  // type is incomplete, so it's impossible to test. We could try to reuse
  // getTypeAlignIfKnown, but that doesn't return the information we need
  // to set BaseInfo.  So just ignore the possibility that the alignment is
  // greater than one.
  if (BaseInfo)
    *BaseInfo = LValueBaseInfo(AlignmentSource::Type);
  return CharUnits::One();
}

if (BaseInfo)
  *BaseInfo = LValueBaseInfo(AlignmentSource::Type);

CharUnits Alignment;
const CXXRecordDecl *RD;
if (T.getQualifiers().hasUnaligned()) {
  Alignment = CharUnits::One();
} else if (forPointeeType && !AlignForArray &&
           (RD = T->getAsCXXRecordDecl())) {
  // For C++ class pointees, we don't know whether we're pointing at a
  // base or a complete object, so we generally need to use the
  // non-virtual alignment.
  Alignment = getClassPointerAlignment(RD);
} else {
  Alignment = getContext().getTypeAlignInChars(T);
}

// Cap to the global maximum type alignment unless the alignment
// was somehow explicit on the type.
if (unsigned MaxAlign = getLangOpts().MaxTypeAlign) {
  if (Alignment.getQuantity() > MaxAlign &&
      !getContext().isAlignmentRequired(T))
    Alignment = CharUnits::fromQuantity(MaxAlign);
}
return Alignment;
6422}

6424bool CodeGenModule::stopAutoInit() {
unsigned StopAfter = getContext().getLangOpts().TrivialAutoVarInitStopAfter;
if (StopAfter) {
  // This number is positive only when -ftrivial-auto-var-init-stop-after=* is
  // used
  if (NumAutoVarInit >= StopAfter) {
    return true;
  }
  if (!NumAutoVarInit) {
    unsigned DiagID = getDiags().getCustomDiagID(
        DiagnosticsEngine::Warning,
        "-ftrivial-auto-var-init-stop-after=%0 has been enabled to limit the "
        "number of times ftrivial-auto-var-init=%1 gets applied.");
    getDiags().Report(DiagID)
        << StopAfter
        << (getContext().getLangOpts().getTrivialAutoVarInit() ==
                    LangOptions::TrivialAutoVarInitKind::Zero
                ? "zero"
                : "pattern");
  }
  ++NumAutoVarInit;
}
return false;
6447}

6449void CodeGenModule::printPostfixForExternalizedStaticVar(
  llvm::raw_ostream &OS) const {
OS << ".static." << getContext().getCUIDHash();
6452}

←

/build/llvm-toolchain-snapshot-13~++20210726100616+dead50d4427c/clang/include/clang/AST/GlobalDecl.h

→

1//===- GlobalDecl.h - Global declaration holder -----------------*- 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// A GlobalDecl can hold either a regular variable/function or a C++ ctor/dtor
10// together with its type.
11//
12//===----------------------------------------------------------------------===//
13 
14#ifndef LLVM_CLANG_AST_GLOBALDECL_H
15#define LLVM_CLANG_AST_GLOBALDECL_H
16 
17#include "clang/AST/Attr.h"
18#include "clang/AST/DeclCXX.h"
19#include "clang/AST/DeclObjC.h"
20#include "clang/AST/DeclOpenMP.h"
21#include "clang/Basic/ABI.h"
22#include "clang/Basic/LLVM.h"
23#include "llvm/ADT/DenseMapInfo.h"
24#include "llvm/ADT/PointerIntPair.h"
25#include "llvm/Support/Casting.h"
26#include "llvm/Support/type_traits.h"
27#include <cassert>
28 
29namespace clang {
30 
31enum class DynamicInitKind : unsigned {
32  NoStub = 0,
33  Initializer,
34  AtExit,
35  GlobalArrayDestructor
36};
37 
38enum class KernelReferenceKind : unsigned {
39  Kernel = 0,
40  Stub = 1,
41};
42 
43/// GlobalDecl - represents a global declaration. This can either be a
44/// CXXConstructorDecl and the constructor type (Base, Complete).
45/// a CXXDestructorDecl and the destructor type (Base, Complete),
46/// a FunctionDecl and the kernel reference type (Kernel, Stub), or
47/// a VarDecl, a FunctionDecl or a BlockDecl.
48///
49/// When a new type of GlobalDecl is added, the following places should
50/// be updated to convert a Decl* to a GlobalDecl:
51/// PredefinedExpr::ComputeName() in lib/AST/Expr.cpp.
52/// getParentOfLocalEntity() in lib/AST/ItaniumMangle.cpp
53/// ASTNameGenerator::Implementation::writeFuncOrVarName in lib/AST/Mangle.cpp
54///
55class GlobalDecl {
56  llvm::PointerIntPair<const Decl *, 3> Value;
57  unsigned MultiVersionIndex = 0;
58 
59  void Init(const Decl *D) {
60    assert(!isa<CXXConstructorDecl>(D) && "Use other ctor with ctor decls!")(static_cast <bool> (!isa<CXXConstructorDecl>(D) &&
 "Use other ctor with ctor decls!") ? void (0) : __assert_fail
 ("!isa<CXXConstructorDecl>(D) && \"Use other ctor with ctor decls!\""
, "/build/llvm-toolchain-snapshot-13~++20210726100616+dead50d4427c/clang/include/clang/AST/GlobalDecl.h"
, 60, __extension__ __PRETTY_FUNCTION__));
61    assert(!isa<CXXDestructorDecl>(D) && "Use other ctor with dtor decls!")(static_cast <bool> (!isa<CXXDestructorDecl>(D) &&
 "Use other ctor with dtor decls!") ? void (0) : __assert_fail
 ("!isa<CXXDestructorDecl>(D) && \"Use other ctor with dtor decls!\""
, "/build/llvm-toolchain-snapshot-13~++20210726100616+dead50d4427c/clang/include/clang/AST/GlobalDecl.h"
, 61, __extension__ __PRETTY_FUNCTION__));
62    assert(!D->hasAttr<CUDAGlobalAttr>() && "Use other ctor with GPU kernels!")(static_cast <bool> (!D->hasAttr<CUDAGlobalAttr>
() && "Use other ctor with GPU kernels!") ? void (0) :
 __assert_fail ("!D->hasAttr<CUDAGlobalAttr>() && \"Use other ctor with GPU kernels!\""
, "/build/llvm-toolchain-snapshot-13~++20210726100616+dead50d4427c/clang/include/clang/AST/GlobalDecl.h"
, 62, __extension__ __PRETTY_FUNCTION__));
63 
64    Value.setPointer(D);
65  }
66 
67public:
68  GlobalDecl() = default;
69  GlobalDecl(const VarDecl *D) { Init(D);}
70  GlobalDecl(const FunctionDecl *D, unsigned MVIndex = 0)
71      : MultiVersionIndex(MVIndex) {
72    if (!D->hasAttr<CUDAGlobalAttr>()) {
73      Init(D);
74      return;
75    }
76    Value.setPointerAndInt(D, unsigned(getDefaultKernelReference(D)));
77  }
78  GlobalDecl(const FunctionDecl *D, KernelReferenceKind Kind)
79      : Value(D, unsigned(Kind)) {
80    assert(D->hasAttr<CUDAGlobalAttr>() && "Decl is not a GPU kernel!")(static_cast <bool> (D->hasAttr<CUDAGlobalAttr>
() && "Decl is not a GPU kernel!") ? void (0) : __assert_fail
 ("D->hasAttr<CUDAGlobalAttr>() && \"Decl is not a GPU kernel!\""
, "/build/llvm-toolchain-snapshot-13~++20210726100616+dead50d4427c/clang/include/clang/AST/GlobalDecl.h"
, 80, __extension__ __PRETTY_FUNCTION__));
81  }
82  GlobalDecl(const NamedDecl *D) { Init(D); }
83  GlobalDecl(const BlockDecl *D) { Init(D); }
84  GlobalDecl(const CapturedDecl *D) { Init(D); }
85  GlobalDecl(const ObjCMethodDecl *D) { Init(D); }
86  GlobalDecl(const OMPDeclareReductionDecl *D) { Init(D); }
87  GlobalDecl(const OMPDeclareMapperDecl *D) { Init(D); }
88  GlobalDecl(const CXXConstructorDecl *D, CXXCtorType Type) : Value(D, Type) {}
89  GlobalDecl(const CXXDestructorDecl *D, CXXDtorType Type) : Value(D, Type) {}
90  GlobalDecl(const VarDecl *D, DynamicInitKind StubKind)
91      : Value(D, unsigned(StubKind)) {}
92 
93  GlobalDecl getCanonicalDecl() const {
94    GlobalDecl CanonGD;
95    CanonGD.Value.setPointer(Value.getPointer()->getCanonicalDecl());
96    CanonGD.Value.setInt(Value.getInt());
97    CanonGD.MultiVersionIndex = MultiVersionIndex;
98 
99    return CanonGD;
100  }
101 
102  const Decl *getDecl() const { return Value.getPointer(); }
46
←
Calling 'PointerIntPair::getPointer'→
55
←
Returning from 'PointerIntPair::getPointer'→
56
←
Returning pointer→
103 
104  CXXCtorType getCtorType() const {
105    assert(isa<CXXConstructorDecl>(getDecl()) && "Decl is not a ctor!")(static_cast <bool> (isa<CXXConstructorDecl>(getDecl
()) && "Decl is not a ctor!") ? void (0) : __assert_fail
 ("isa<CXXConstructorDecl>(getDecl()) && \"Decl is not a ctor!\""
, "/build/llvm-toolchain-snapshot-13~++20210726100616+dead50d4427c/clang/include/clang/AST/GlobalDecl.h"
, 105, __extension__ __PRETTY_FUNCTION__));
106    return static_cast<CXXCtorType>(Value.getInt());
107  }
108 
109  CXXDtorType getDtorType() const {
110    assert(isa<CXXDestructorDecl>(getDecl()) && "Decl is not a dtor!")(static_cast <bool> (isa<CXXDestructorDecl>(getDecl
()) && "Decl is not a dtor!") ? void (0) : __assert_fail
 ("isa<CXXDestructorDecl>(getDecl()) && \"Decl is not a dtor!\""
, "/build/llvm-toolchain-snapshot-13~++20210726100616+dead50d4427c/clang/include/clang/AST/GlobalDecl.h"
, 110, __extension__ __PRETTY_FUNCTION__));
111    return static_cast<CXXDtorType>(Value.getInt());
112  }
113 
114  DynamicInitKind getDynamicInitKind() const {
115    assert(isa<VarDecl>(getDecl()) &&(static_cast <bool> (isa<VarDecl>(getDecl()) &&
 cast<VarDecl>(getDecl())->hasGlobalStorage() &&
 "Decl is not a global variable!") ? void (0) : __assert_fail
 ("isa<VarDecl>(getDecl()) && cast<VarDecl>(getDecl())->hasGlobalStorage() && \"Decl is not a global variable!\""
, "/build/llvm-toolchain-snapshot-13~++20210726100616+dead50d4427c/clang/include/clang/AST/GlobalDecl.h"
, 117, __extension__ __PRETTY_FUNCTION__))
116           cast<VarDecl>(getDecl())->hasGlobalStorage() &&(static_cast <bool> (isa<VarDecl>(getDecl()) &&
 cast<VarDecl>(getDecl())->hasGlobalStorage() &&
 "Decl is not a global variable!") ? void (0) : __assert_fail
 ("isa<VarDecl>(getDecl()) && cast<VarDecl>(getDecl())->hasGlobalStorage() && \"Decl is not a global variable!\""
, "/build/llvm-toolchain-snapshot-13~++20210726100616+dead50d4427c/clang/include/clang/AST/GlobalDecl.h"
, 117, __extension__ __PRETTY_FUNCTION__))
117           "Decl is not a global variable!")(static_cast <bool> (isa<VarDecl>(getDecl()) &&
 cast<VarDecl>(getDecl())->hasGlobalStorage() &&
 "Decl is not a global variable!") ? void (0) : __assert_fail
 ("isa<VarDecl>(getDecl()) && cast<VarDecl>(getDecl())->hasGlobalStorage() && \"Decl is not a global variable!\""
, "/build/llvm-toolchain-snapshot-13~++20210726100616+dead50d4427c/clang/include/clang/AST/GlobalDecl.h"
, 117, __extension__ __PRETTY_FUNCTION__));
118    return static_cast<DynamicInitKind>(Value.getInt());
119  }
120 
121  unsigned getMultiVersionIndex() const {
122    assert(isa<FunctionDecl>((static_cast <bool> (isa<FunctionDecl>( getDecl()
) && !cast<FunctionDecl>(getDecl())->hasAttr
<CUDAGlobalAttr>() && !isa<CXXConstructorDecl
>(getDecl()) && !isa<CXXDestructorDecl>(getDecl
()) && "Decl is not a plain FunctionDecl!") ? void (0
) : __assert_fail ("isa<FunctionDecl>( getDecl()) && !cast<FunctionDecl>(getDecl())->hasAttr<CUDAGlobalAttr>() && !isa<CXXConstructorDecl>(getDecl()) && !isa<CXXDestructorDecl>(getDecl()) && \"Decl is not a plain FunctionDecl!\""
, "/build/llvm-toolchain-snapshot-13~++20210726100616+dead50d4427c/clang/include/clang/AST/GlobalDecl.h"
, 127, __extension__ __PRETTY_FUNCTION__))
123               getDecl()) &&(static_cast <bool> (isa<FunctionDecl>( getDecl()
) && !cast<FunctionDecl>(getDecl())->hasAttr
<CUDAGlobalAttr>() && !isa<CXXConstructorDecl
>(getDecl()) && !isa<CXXDestructorDecl>(getDecl
()) && "Decl is not a plain FunctionDecl!") ? void (0
) : __assert_fail ("isa<FunctionDecl>( getDecl()) && !cast<FunctionDecl>(getDecl())->hasAttr<CUDAGlobalAttr>() && !isa<CXXConstructorDecl>(getDecl()) && !isa<CXXDestructorDecl>(getDecl()) && \"Decl is not a plain FunctionDecl!\""
, "/build/llvm-toolchain-snapshot-13~++20210726100616+dead50d4427c/clang/include/clang/AST/GlobalDecl.h"
, 127, __extension__ __PRETTY_FUNCTION__))
124               !cast<FunctionDecl>(getDecl())->hasAttr<CUDAGlobalAttr>() &&(static_cast <bool> (isa<FunctionDecl>( getDecl()
) && !cast<FunctionDecl>(getDecl())->hasAttr
<CUDAGlobalAttr>() && !isa<CXXConstructorDecl
>(getDecl()) && !isa<CXXDestructorDecl>(getDecl
()) && "Decl is not a plain FunctionDecl!") ? void (0
) : __assert_fail ("isa<FunctionDecl>( getDecl()) && !cast<FunctionDecl>(getDecl())->hasAttr<CUDAGlobalAttr>() && !isa<CXXConstructorDecl>(getDecl()) && !isa<CXXDestructorDecl>(getDecl()) && \"Decl is not a plain FunctionDecl!\""
, "/build/llvm-toolchain-snapshot-13~++20210726100616+dead50d4427c/clang/include/clang/AST/GlobalDecl.h"
, 127, __extension__ __PRETTY_FUNCTION__))
125           !isa<CXXConstructorDecl>(getDecl()) &&(static_cast <bool> (isa<FunctionDecl>( getDecl()
) && !cast<FunctionDecl>(getDecl())->hasAttr
<CUDAGlobalAttr>() && !isa<CXXConstructorDecl
>(getDecl()) && !isa<CXXDestructorDecl>(getDecl
()) && "Decl is not a plain FunctionDecl!") ? void (0
) : __assert_fail ("isa<FunctionDecl>( getDecl()) && !cast<FunctionDecl>(getDecl())->hasAttr<CUDAGlobalAttr>() && !isa<CXXConstructorDecl>(getDecl()) && !isa<CXXDestructorDecl>(getDecl()) && \"Decl is not a plain FunctionDecl!\""
, "/build/llvm-toolchain-snapshot-13~++20210726100616+dead50d4427c/clang/include/clang/AST/GlobalDecl.h"
, 127, __extension__ __PRETTY_FUNCTION__))
126           !isa<CXXDestructorDecl>(getDecl()) &&(static_cast <bool> (isa<FunctionDecl>( getDecl()
) && !cast<FunctionDecl>(getDecl())->hasAttr
<CUDAGlobalAttr>() && !isa<CXXConstructorDecl
>(getDecl()) && !isa<CXXDestructorDecl>(getDecl
()) && "Decl is not a plain FunctionDecl!") ? void (0
) : __assert_fail ("isa<FunctionDecl>( getDecl()) && !cast<FunctionDecl>(getDecl())->hasAttr<CUDAGlobalAttr>() && !isa<CXXConstructorDecl>(getDecl()) && !isa<CXXDestructorDecl>(getDecl()) && \"Decl is not a plain FunctionDecl!\""
, "/build/llvm-toolchain-snapshot-13~++20210726100616+dead50d4427c/clang/include/clang/AST/GlobalDecl.h"
, 127, __extension__ __PRETTY_FUNCTION__))
127           "Decl is not a plain FunctionDecl!")(static_cast <bool> (isa<FunctionDecl>( getDecl()
) && !cast<FunctionDecl>(getDecl())->hasAttr
<CUDAGlobalAttr>() && !isa<CXXConstructorDecl
>(getDecl()) && !isa<CXXDestructorDecl>(getDecl
()) && "Decl is not a plain FunctionDecl!") ? void (0
) : __assert_fail ("isa<FunctionDecl>( getDecl()) && !cast<FunctionDecl>(getDecl())->hasAttr<CUDAGlobalAttr>() && !isa<CXXConstructorDecl>(getDecl()) && !isa<CXXDestructorDecl>(getDecl()) && \"Decl is not a plain FunctionDecl!\""
, "/build/llvm-toolchain-snapshot-13~++20210726100616+dead50d4427c/clang/include/clang/AST/GlobalDecl.h"
, 127, __extension__ __PRETTY_FUNCTION__));
128    return MultiVersionIndex;
129  }
130 
131  KernelReferenceKind getKernelReferenceKind() const {
132    assert(isa<FunctionDecl>(getDecl()) &&(static_cast <bool> (isa<FunctionDecl>(getDecl())
 && cast<FunctionDecl>(getDecl())->hasAttr<
CUDAGlobalAttr>() && "Decl is not a GPU kernel!") ?
 void (0) : __assert_fail ("isa<FunctionDecl>(getDecl()) && cast<FunctionDecl>(getDecl())->hasAttr<CUDAGlobalAttr>() && \"Decl is not a GPU kernel!\""
, "/build/llvm-toolchain-snapshot-13~++20210726100616+dead50d4427c/clang/include/clang/AST/GlobalDecl.h"
, 134, __extension__ __PRETTY_FUNCTION__))
133           cast<FunctionDecl>(getDecl())->hasAttr<CUDAGlobalAttr>() &&(static_cast <bool> (isa<FunctionDecl>(getDecl())
 && cast<FunctionDecl>(getDecl())->hasAttr<
CUDAGlobalAttr>() && "Decl is not a GPU kernel!") ?
 void (0) : __assert_fail ("isa<FunctionDecl>(getDecl()) && cast<FunctionDecl>(getDecl())->hasAttr<CUDAGlobalAttr>() && \"Decl is not a GPU kernel!\""
, "/build/llvm-toolchain-snapshot-13~++20210726100616+dead50d4427c/clang/include/clang/AST/GlobalDecl.h"
, 134, __extension__ __PRETTY_FUNCTION__))
134           "Decl is not a GPU kernel!")(static_cast <bool> (isa<FunctionDecl>(getDecl())
 && cast<FunctionDecl>(getDecl())->hasAttr<
CUDAGlobalAttr>() && "Decl is not a GPU kernel!") ?
 void (0) : __assert_fail ("isa<FunctionDecl>(getDecl()) && cast<FunctionDecl>(getDecl())->hasAttr<CUDAGlobalAttr>() && \"Decl is not a GPU kernel!\""
, "/build/llvm-toolchain-snapshot-13~++20210726100616+dead50d4427c/clang/include/clang/AST/GlobalDecl.h"
, 134, __extension__ __PRETTY_FUNCTION__));
135    return static_cast<KernelReferenceKind>(Value.getInt());
136  }
137 
138  friend bool operator==(const GlobalDecl &LHS, const GlobalDecl &RHS) {
139    return LHS.Value == RHS.Value &&
140           LHS.MultiVersionIndex == RHS.MultiVersionIndex;
141  }
142 
143  void *getAsOpaquePtr() const { return Value.getOpaqueValue(); }
144 
145  explicit operator bool() const { return getAsOpaquePtr(); }
146 
147  static GlobalDecl getFromOpaquePtr(void *P) {
148    GlobalDecl GD;
149    GD.Value.setFromOpaqueValue(P);
150    return GD;
151  }
152 
153  static KernelReferenceKind getDefaultKernelReference(const FunctionDecl *D) {
154    return D->getLangOpts().CUDAIsDevice ? KernelReferenceKind::Kernel
155                                         : KernelReferenceKind::Stub;
156  }
157 
158  GlobalDecl getWithDecl(const Decl *D) {
159    GlobalDecl Result(*this);
160    Result.Value.setPointer(D);
161    return Result;
162  }
163 
164  GlobalDecl getWithCtorType(CXXCtorType Type) {
165    assert(isa<CXXConstructorDecl>(getDecl()))(static_cast <bool> (isa<CXXConstructorDecl>(getDecl
())) ? void (0) : __assert_fail ("isa<CXXConstructorDecl>(getDecl())"
, "/build/llvm-toolchain-snapshot-13~++20210726100616+dead50d4427c/clang/include/clang/AST/GlobalDecl.h"
, 165, __extension__ __PRETTY_FUNCTION__));
166    GlobalDecl Result(*this);
167    Result.Value.setInt(Type);
168    return Result;
169  }
170 
171  GlobalDecl getWithDtorType(CXXDtorType Type) {
172    assert(isa<CXXDestructorDecl>(getDecl()))(static_cast <bool> (isa<CXXDestructorDecl>(getDecl
())) ? void (0) : __assert_fail ("isa<CXXDestructorDecl>(getDecl())"
, "/build/llvm-toolchain-snapshot-13~++20210726100616+dead50d4427c/clang/include/clang/AST/GlobalDecl.h"
, 172, __extension__ __PRETTY_FUNCTION__));
173    GlobalDecl Result(*this);
174    Result.Value.setInt(Type);
175    return Result;
176  }
177 
178  GlobalDecl getWithMultiVersionIndex(unsigned Index) {
179    assert(isa<FunctionDecl>(getDecl()) &&(static_cast <bool> (isa<FunctionDecl>(getDecl())
 && !cast<FunctionDecl>(getDecl())->hasAttr<
CUDAGlobalAttr>() && !isa<CXXConstructorDecl>
(getDecl()) && !isa<CXXDestructorDecl>(getDecl(
)) && "Decl is not a plain FunctionDecl!") ? void (0)
 : __assert_fail ("isa<FunctionDecl>(getDecl()) && !cast<FunctionDecl>(getDecl())->hasAttr<CUDAGlobalAttr>() && !isa<CXXConstructorDecl>(getDecl()) && !isa<CXXDestructorDecl>(getDecl()) && \"Decl is not a plain FunctionDecl!\""
, "/build/llvm-toolchain-snapshot-13~++20210726100616+dead50d4427c/clang/include/clang/AST/GlobalDecl.h"
, 183, __extension__ __PRETTY_FUNCTION__))
180           !cast<FunctionDecl>(getDecl())->hasAttr<CUDAGlobalAttr>() &&(static_cast <bool> (isa<FunctionDecl>(getDecl())
 && !cast<FunctionDecl>(getDecl())->hasAttr<
CUDAGlobalAttr>() && !isa<CXXConstructorDecl>
(getDecl()) && !isa<CXXDestructorDecl>(getDecl(
)) && "Decl is not a plain FunctionDecl!") ? void (0)
 : __assert_fail ("isa<FunctionDecl>(getDecl()) && !cast<FunctionDecl>(getDecl())->hasAttr<CUDAGlobalAttr>() && !isa<CXXConstructorDecl>(getDecl()) && !isa<CXXDestructorDecl>(getDecl()) && \"Decl is not a plain FunctionDecl!\""
, "/build/llvm-toolchain-snapshot-13~++20210726100616+dead50d4427c/clang/include/clang/AST/GlobalDecl.h"
, 183, __extension__ __PRETTY_FUNCTION__))
181           !isa<CXXConstructorDecl>(getDecl()) &&(static_cast <bool> (isa<FunctionDecl>(getDecl())
 && !cast<FunctionDecl>(getDecl())->hasAttr<
CUDAGlobalAttr>() && !isa<CXXConstructorDecl>
(getDecl()) && !isa<CXXDestructorDecl>(getDecl(
)) && "Decl is not a plain FunctionDecl!") ? void (0)
 : __assert_fail ("isa<FunctionDecl>(getDecl()) && !cast<FunctionDecl>(getDecl())->hasAttr<CUDAGlobalAttr>() && !isa<CXXConstructorDecl>(getDecl()) && !isa<CXXDestructorDecl>(getDecl()) && \"Decl is not a plain FunctionDecl!\""
, "/build/llvm-toolchain-snapshot-13~++20210726100616+dead50d4427c/clang/include/clang/AST/GlobalDecl.h"
, 183, __extension__ __PRETTY_FUNCTION__))
182           !isa<CXXDestructorDecl>(getDecl()) &&(static_cast <bool> (isa<FunctionDecl>(getDecl())
 && !cast<FunctionDecl>(getDecl())->hasAttr<
CUDAGlobalAttr>() && !isa<CXXConstructorDecl>
(getDecl()) && !isa<CXXDestructorDecl>(getDecl(
)) && "Decl is not a plain FunctionDecl!") ? void (0)
 : __assert_fail ("isa<FunctionDecl>(getDecl()) && !cast<FunctionDecl>(getDecl())->hasAttr<CUDAGlobalAttr>() && !isa<CXXConstructorDecl>(getDecl()) && !isa<CXXDestructorDecl>(getDecl()) && \"Decl is not a plain FunctionDecl!\""
, "/build/llvm-toolchain-snapshot-13~++20210726100616+dead50d4427c/clang/include/clang/AST/GlobalDecl.h"
, 183, __extension__ __PRETTY_FUNCTION__))
183           "Decl is not a plain FunctionDecl!")(static_cast <bool> (isa<FunctionDecl>(getDecl())
 && !cast<FunctionDecl>(getDecl())->hasAttr<
CUDAGlobalAttr>() && !isa<CXXConstructorDecl>
(getDecl()) && !isa<CXXDestructorDecl>(getDecl(
)) && "Decl is not a plain FunctionDecl!") ? void (0)
 : __assert_fail ("isa<FunctionDecl>(getDecl()) && !cast<FunctionDecl>(getDecl())->hasAttr<CUDAGlobalAttr>() && !isa<CXXConstructorDecl>(getDecl()) && !isa<CXXDestructorDecl>(getDecl()) && \"Decl is not a plain FunctionDecl!\""
, "/build/llvm-toolchain-snapshot-13~++20210726100616+dead50d4427c/clang/include/clang/AST/GlobalDecl.h"
, 183, __extension__ __PRETTY_FUNCTION__));
184    GlobalDecl Result(*this);
185    Result.MultiVersionIndex = Index;
186    return Result;
187  }
188 
189  GlobalDecl getWithKernelReferenceKind(KernelReferenceKind Kind) {
190    assert(isa<FunctionDecl>(getDecl()) &&(static_cast <bool> (isa<FunctionDecl>(getDecl())
 && cast<FunctionDecl>(getDecl())->hasAttr<
CUDAGlobalAttr>() && "Decl is not a GPU kernel!") ?
 void (0) : __assert_fail ("isa<FunctionDecl>(getDecl()) && cast<FunctionDecl>(getDecl())->hasAttr<CUDAGlobalAttr>() && \"Decl is not a GPU kernel!\""
, "/build/llvm-toolchain-snapshot-13~++20210726100616+dead50d4427c/clang/include/clang/AST/GlobalDecl.h"
, 192, __extension__ __PRETTY_FUNCTION__))
191           cast<FunctionDecl>(getDecl())->hasAttr<CUDAGlobalAttr>() &&(static_cast <bool> (isa<FunctionDecl>(getDecl())
 && cast<FunctionDecl>(getDecl())->hasAttr<
CUDAGlobalAttr>() && "Decl is not a GPU kernel!") ?
 void (0) : __assert_fail ("isa<FunctionDecl>(getDecl()) && cast<FunctionDecl>(getDecl())->hasAttr<CUDAGlobalAttr>() && \"Decl is not a GPU kernel!\""
, "/build/llvm-toolchain-snapshot-13~++20210726100616+dead50d4427c/clang/include/clang/AST/GlobalDecl.h"
, 192, __extension__ __PRETTY_FUNCTION__))
192           "Decl is not a GPU kernel!")(static_cast <bool> (isa<FunctionDecl>(getDecl())
 && cast<FunctionDecl>(getDecl())->hasAttr<
CUDAGlobalAttr>() && "Decl is not a GPU kernel!") ?
 void (0) : __assert_fail ("isa<FunctionDecl>(getDecl()) && cast<FunctionDecl>(getDecl())->hasAttr<CUDAGlobalAttr>() && \"Decl is not a GPU kernel!\""
, "/build/llvm-toolchain-snapshot-13~++20210726100616+dead50d4427c/clang/include/clang/AST/GlobalDecl.h"
, 192, __extension__ __PRETTY_FUNCTION__));
193    GlobalDecl Result(*this);
194    Result.Value.setInt(unsigned(Kind));
195    return Result;
196  }
197};
198 
199} // namespace clang
200 
201namespace llvm {
202 
203  template<> struct DenseMapInfo<clang::GlobalDecl> {
204    static inline clang::GlobalDecl getEmptyKey() {
205      return clang::GlobalDecl();
206    }
207 
208    static inline clang::GlobalDecl getTombstoneKey() {
209      return clang::GlobalDecl::
210        getFromOpaquePtr(reinterpret_cast<void*>(-1));
211    }
212 
213    static unsigned getHashValue(clang::GlobalDecl GD) {
214      return DenseMapInfo<void*>::getHashValue(GD.getAsOpaquePtr());
215    }
216 
217    static bool isEqual(clang::GlobalDecl LHS,
218                        clang::GlobalDecl RHS) {
219      return LHS == RHS;
220    }
221  };
222 
223} // namespace llvm
224 
225#endif // LLVM_CLANG_AST_GLOBALDECL_H

←

/build/llvm-toolchain-snapshot-13~++20210726100616+dead50d4427c/llvm/include/llvm/ADT/PointerIntPair.h

→

1//===- llvm/ADT/PointerIntPair.h - Pair for pointer and int -----*- 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 defines the PointerIntPair class.
10//
11//===----------------------------------------------------------------------===//
12 
13#ifndef LLVM_ADT_POINTERINTPAIR_H
14#define LLVM_ADT_POINTERINTPAIR_H
15 
16#include "llvm/Support/Compiler.h"
17#include "llvm/Support/PointerLikeTypeTraits.h"
18#include "llvm/Support/type_traits.h"
19#include <cassert>
20#include <cstdint>
21#include <limits>
22 
23namespace llvm {
24 
25template <typename T> struct DenseMapInfo;
26template <typename PointerT, unsigned IntBits, typename PtrTraits>
27struct PointerIntPairInfo;
28 
29/// PointerIntPair - This class implements a pair of a pointer and small
30/// integer.  It is designed to represent this in the space required by one
31/// pointer by bitmangling the integer into the low part of the pointer.  This
32/// can only be done for small integers: typically up to 3 bits, but it depends
33/// on the number of bits available according to PointerLikeTypeTraits for the
34/// type.
35///
36/// Note that PointerIntPair always puts the IntVal part in the highest bits
37/// possible.  For example, PointerIntPair<void*, 1, bool> will put the bit for
38/// the bool into bit #2, not bit #0, which allows the low two bits to be used
39/// for something else.  For example, this allows:
40///   PointerIntPair<PointerIntPair<void*, 1, bool>, 1, bool>
41/// ... and the two bools will land in different bits.
42template <typename PointerTy, unsigned IntBits, typename IntType = unsigned,
43          typename PtrTraits = PointerLikeTypeTraits<PointerTy>,
44          typename Info = PointerIntPairInfo<PointerTy, IntBits, PtrTraits>>
45class PointerIntPair {
46  // Used by MSVC visualizer and generally helpful for debugging/visualizing.
47  using InfoTy = Info;
48  intptr_t Value = 0;
49 
50public:
51  constexpr PointerIntPair() = default;
52 
53  PointerIntPair(PointerTy PtrVal, IntType IntVal) {
54    setPointerAndInt(PtrVal, IntVal);
55  }
56 
57  explicit PointerIntPair(PointerTy PtrVal) { initWithPointer(PtrVal); }
58 
59  PointerTy getPointer() const { return Info::getPointer(Value); }
47
←
Calling 'PointerIntPairInfo::getPointer'→
53
←
Returning from 'PointerIntPairInfo::getPointer'→
54
←
Returning pointer→
60 
61  IntType getInt() const { return (IntType)Info::getInt(Value); }
62 
63  void setPointer(PointerTy PtrVal) LLVM_LVALUE_FUNCTION& {
64    Value = Info::updatePointer(Value, PtrVal);
65  }
66 
67  void setInt(IntType IntVal) LLVM_LVALUE_FUNCTION& {
68    Value = Info::updateInt(Value, static_cast<intptr_t>(IntVal));
69  }
70 
71  void initWithPointer(PointerTy PtrVal) LLVM_LVALUE_FUNCTION& {
72    Value = Info::updatePointer(0, PtrVal);
73  }
74 
75  void setPointerAndInt(PointerTy PtrVal, IntType IntVal) LLVM_LVALUE_FUNCTION& {
76    Value = Info::updateInt(Info::updatePointer(0, PtrVal),
77                            static_cast<intptr_t>(IntVal));
78  }
79 
80  PointerTy const *getAddrOfPointer() const {
81    return const_cast<PointerIntPair *>(this)->getAddrOfPointer();
82  }
83 
84  PointerTy *getAddrOfPointer() {
85    assert(Value == reinterpret_cast<intptr_t>(getPointer()) &&(static_cast <bool> (Value == reinterpret_cast<intptr_t
>(getPointer()) && "Can only return the address if IntBits is cleared and "
 "PtrTraits doesn't change the pointer") ? void (0) : __assert_fail
 ("Value == reinterpret_cast<intptr_t>(getPointer()) && \"Can only return the address if IntBits is cleared and \" \"PtrTraits doesn't change the pointer\""
, "/build/llvm-toolchain-snapshot-13~++20210726100616+dead50d4427c/llvm/include/llvm/ADT/PointerIntPair.h"
, 87, __extension__ __PRETTY_FUNCTION__))
86           "Can only return the address if IntBits is cleared and "(static_cast <bool> (Value == reinterpret_cast<intptr_t
>(getPointer()) && "Can only return the address if IntBits is cleared and "
 "PtrTraits doesn't change the pointer") ? void (0) : __assert_fail
 ("Value == reinterpret_cast<intptr_t>(getPointer()) && \"Can only return the address if IntBits is cleared and \" \"PtrTraits doesn't change the pointer\""
, "/build/llvm-toolchain-snapshot-13~++20210726100616+dead50d4427c/llvm/include/llvm/ADT/PointerIntPair.h"
, 87, __extension__ __PRETTY_FUNCTION__))
87           "PtrTraits doesn't change the pointer")(static_cast <bool> (Value == reinterpret_cast<intptr_t
>(getPointer()) && "Can only return the address if IntBits is cleared and "
 "PtrTraits doesn't change the pointer") ? void (0) : __assert_fail
 ("Value == reinterpret_cast<intptr_t>(getPointer()) && \"Can only return the address if IntBits is cleared and \" \"PtrTraits doesn't change the pointer\""
, "/build/llvm-toolchain-snapshot-13~++20210726100616+dead50d4427c/llvm/include/llvm/ADT/PointerIntPair.h"
, 87, __extension__ __PRETTY_FUNCTION__));
88    return reinterpret_cast<PointerTy *>(&Value);
89  }
90 
91  void *getOpaqueValue() const { return reinterpret_cast<void *>(Value); }
92 
93  void setFromOpaqueValue(void *Val) LLVM_LVALUE_FUNCTION& {
94    Value = reinterpret_cast<intptr_t>(Val);
95  }
96 
97  static PointerIntPair getFromOpaqueValue(void *V) {
98    PointerIntPair P;
99    P.setFromOpaqueValue(V);
100    return P;
101  }
102 
103  // Allow PointerIntPairs to be created from const void * if and only if the
104  // pointer type could be created from a const void *.
105  static PointerIntPair getFromOpaqueValue(const void *V) {
106    (void)PtrTraits::getFromVoidPointer(V);
107    return getFromOpaqueValue(const_cast<void *>(V));
108  }
109 
110  bool operator==(const PointerIntPair &RHS) const {
111    return Value == RHS.Value;
112  }
113 
114  bool operator!=(const PointerIntPair &RHS) const {
115    return Value != RHS.Value;
116  }
117 
118  bool operator<(const PointerIntPair &RHS) const { return Value < RHS.Value; }
119  bool operator>(const PointerIntPair &RHS) const { return Value > RHS.Value; }
120 
121  bool operator<=(const PointerIntPair &RHS) const {
122    return Value <= RHS.Value;
123  }
124 
125  bool operator>=(const PointerIntPair &RHS) const {
126    return Value >= RHS.Value;
127  }
128};
129 
130// Specialize is_trivially_copyable to avoid limitation of llvm::is_trivially_copyable
131// when compiled with gcc 4.9.
132template <typename PointerTy, unsigned IntBits, typename IntType,
133          typename PtrTraits,
134          typename Info>
135struct is_trivially_copyable<PointerIntPair<PointerTy, IntBits, IntType, PtrTraits, Info>> : std::true_type {
136#ifdef HAVE_STD_IS_TRIVIALLY_COPYABLE
137  static_assert(std::is_trivially_copyable<PointerIntPair<PointerTy, IntBits, IntType, PtrTraits, Info>>::value,
138                "inconsistent behavior between llvm:: and std:: implementation of is_trivially_copyable");
139#endif
140};
141 
142 
143template <typename PointerT, unsigned IntBits, typename PtrTraits>
144struct PointerIntPairInfo {
145  static_assert(PtrTraits::NumLowBitsAvailable <
146                    std::numeric_limits<uintptr_t>::digits,
147                "cannot use a pointer type that has all bits free");
148  static_assert(IntBits <= PtrTraits::NumLowBitsAvailable,
149                "PointerIntPair with integer size too large for pointer");
150  enum MaskAndShiftConstants : uintptr_t {
151    /// PointerBitMask - The bits that come from the pointer.
152    PointerBitMask =
153        ~(uintptr_t)(((intptr_t)1 << PtrTraits::NumLowBitsAvailable) - 1),
154 
155    /// IntShift - The number of low bits that we reserve for other uses, and
156    /// keep zero.
157    IntShift = (uintptr_t)PtrTraits::NumLowBitsAvailable - IntBits,
158 
159    /// IntMask - This is the unshifted mask for valid bits of the int type.
160    IntMask = (uintptr_t)(((intptr_t)1 << IntBits) - 1),
161 
162    // ShiftedIntMask - This is the bits for the integer shifted in place.
163    ShiftedIntMask = (uintptr_t)(IntMask << IntShift)
164  };
165 
166  static PointerT getPointer(intptr_t Value) {
167    return PtrTraits::getFromVoidPointer(
48
←
Calling 'PointerLikeTypeTraits::getFromVoidPointer'→
51
←
Returning from 'PointerLikeTypeTraits::getFromVoidPointer'→
52
←
Returning pointer→
168        reinterpret_cast<void *>(Value & PointerBitMask));
169  }
170 
171  static intptr_t getInt(intptr_t Value) {
172    return (Value >> IntShift) & IntMask;
173  }
174 
175  static intptr_t updatePointer(intptr_t OrigValue, PointerT Ptr) {
176    intptr_t PtrWord =
177        reinterpret_cast<intptr_t>(PtrTraits::getAsVoidPointer(Ptr));
178    assert((PtrWord & ~PointerBitMask) == 0 &&(static_cast <bool> ((PtrWord & ~PointerBitMask) ==
 0 && "Pointer is not sufficiently aligned") ? void (
0) : __assert_fail ("(PtrWord & ~PointerBitMask) == 0 && \"Pointer is not sufficiently aligned\""
, "/build/llvm-toolchain-snapshot-13~++20210726100616+dead50d4427c/llvm/include/llvm/ADT/PointerIntPair.h"
, 179, __extension__ __PRETTY_FUNCTION__))
179           "Pointer is not sufficiently aligned")(static_cast <bool> ((PtrWord & ~PointerBitMask) ==
 0 && "Pointer is not sufficiently aligned") ? void (
0) : __assert_fail ("(PtrWord & ~PointerBitMask) == 0 && \"Pointer is not sufficiently aligned\""
, "/build/llvm-toolchain-snapshot-13~++20210726100616+dead50d4427c/llvm/include/llvm/ADT/PointerIntPair.h"
, 179, __extension__ __PRETTY_FUNCTION__));
180    // Preserve all low bits, just update the pointer.
181    return PtrWord | (OrigValue & ~PointerBitMask);
182  }
183 
184  static intptr_t updateInt(intptr_t OrigValue, intptr_t Int) {
185    intptr_t IntWord = static_cast<intptr_t>(Int);
186    assert((IntWord & ~IntMask) == 0 && "Integer too large for field")(static_cast <bool> ((IntWord & ~IntMask) == 0 &&
 "Integer too large for field") ? void (0) : __assert_fail ("(IntWord & ~IntMask) == 0 && \"Integer too large for field\""
, "/build/llvm-toolchain-snapshot-13~++20210726100616+dead50d4427c/llvm/include/llvm/ADT/PointerIntPair.h"
, 186, __extension__ __PRETTY_FUNCTION__));
187 
188    // Preserve all bits other than the ones we are updating.
189    return (OrigValue & ~ShiftedIntMask) | IntWord << IntShift;
190  }
191};
192 
193// Provide specialization of DenseMapInfo for PointerIntPair.
194template <typename PointerTy, unsigned IntBits, typename IntType>
195struct DenseMapInfo<PointerIntPair<PointerTy, IntBits, IntType>> {
196  using Ty = PointerIntPair<PointerTy, IntBits, IntType>;
197 
198  static Ty getEmptyKey() {
199    uintptr_t Val = static_cast<uintptr_t>(-1);
200    Val <<= PointerLikeTypeTraits<Ty>::NumLowBitsAvailable;
201    return Ty::getFromOpaqueValue(reinterpret_cast<void *>(Val));
202  }
203 
204  static Ty getTombstoneKey() {
205    uintptr_t Val = static_cast<uintptr_t>(-2);
206    Val <<= PointerLikeTypeTraits<PointerTy>::NumLowBitsAvailable;
207    return Ty::getFromOpaqueValue(reinterpret_cast<void *>(Val));
208  }
209 
210  static unsigned getHashValue(Ty V) {
211    uintptr_t IV = reinterpret_cast<uintptr_t>(V.getOpaqueValue());
212    return unsigned(IV) ^ unsigned(IV >> 9);
213  }
214 
215  static bool isEqual(const Ty &LHS, const Ty &RHS) { return LHS == RHS; }
216};
217 
218// Teach SmallPtrSet that PointerIntPair is "basically a pointer".
219template <typename PointerTy, unsigned IntBits, typename IntType,
220          typename PtrTraits>
221struct PointerLikeTypeTraits<
222    PointerIntPair<PointerTy, IntBits, IntType, PtrTraits>> {
223  static inline void *
224  getAsVoidPointer(const PointerIntPair<PointerTy, IntBits, IntType> &P) {
225    return P.getOpaqueValue();
226  }
227 
228  static inline PointerIntPair<PointerTy, IntBits, IntType>
229  getFromVoidPointer(void *P) {
230    return PointerIntPair<PointerTy, IntBits, IntType>::getFromOpaqueValue(P);
231  }
232 
233  static inline PointerIntPair<PointerTy, IntBits, IntType>
234  getFromVoidPointer(const void *P) {
235    return PointerIntPair<PointerTy, IntBits, IntType>::getFromOpaqueValue(P);
236  }
237 
238  static constexpr int NumLowBitsAvailable =
239      PtrTraits::NumLowBitsAvailable - IntBits;
240};
241 
242} // end namespace llvm
243 
244#endif // LLVM_ADT_POINTERINTPAIR_H

←

/build/llvm-toolchain-snapshot-13~++20210726100616+dead50d4427c/llvm/include/llvm/Support/PointerLikeTypeTraits.h

1//===- llvm/Support/PointerLikeTypeTraits.h - Pointer Traits ----*- 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 defines the PointerLikeTypeTraits class.  This allows data
10// structures to reason about pointers and other things that are pointer sized.
11//
12//===----------------------------------------------------------------------===//
13 
14#ifndef LLVM_SUPPORT_POINTERLIKETYPETRAITS_H
15#define LLVM_SUPPORT_POINTERLIKETYPETRAITS_H
16 
17#include "llvm/Support/DataTypes.h"
18#include <cassert>
19#include <type_traits>
20 
21namespace llvm {
22 
23/// A traits type that is used to handle pointer types and things that are just
24/// wrappers for pointers as a uniform entity.
25template <typename T> struct PointerLikeTypeTraits;
26 
27namespace detail {
28/// A tiny meta function to compute the log2 of a compile time constant.
29template <size_t N>
30struct ConstantLog2
31    : std::integral_constant<size_t, ConstantLog2<N / 2>::value + 1> {};
32template <> struct ConstantLog2<1> : std::integral_constant<size_t, 0> {};
33 
34// Provide a trait to check if T is pointer-like.
35template <typename T, typename U = void> struct HasPointerLikeTypeTraits {
36  static const bool value = false;
37};
38 
39// sizeof(T) is valid only for a complete T.
40template <typename T>
41struct HasPointerLikeTypeTraits<
42    T, decltype((sizeof(PointerLikeTypeTraits<T>) + sizeof(T)), void())> {
43  static const bool value = true;
44};
45 
46template <typename T> struct IsPointerLike {
47  static const bool value = HasPointerLikeTypeTraits<T>::value;
48};
49 
50template <typename T> struct IsPointerLike<T *> {
51  static const bool value = true;
52};
53} // namespace detail
54 
55// Provide PointerLikeTypeTraits for non-cvr pointers.
56template <typename T> struct PointerLikeTypeTraits<T *> {
57  static inline void *getAsVoidPointer(T *P) { return P; }
58  static inline T *getFromVoidPointer(void *P) { return static_cast<T *>(P); }
59 
60  static constexpr int NumLowBitsAvailable =
61      detail::ConstantLog2<alignof(T)>::value;
62};
63 
64template <> struct PointerLikeTypeTraits<void *> {
65  static inline void *getAsVoidPointer(void *P) { return P; }
66  static inline void *getFromVoidPointer(void *P) { return P; }
67 
68  /// Note, we assume here that void* is related to raw malloc'ed memory and
69  /// that malloc returns objects at least 4-byte aligned. However, this may be
70  /// wrong, or pointers may be from something other than malloc. In this case,
71  /// you should specify a real typed pointer or avoid this template.
72  ///
73  /// All clients should use assertions to do a run-time check to ensure that
74  /// this is actually true.
75  static constexpr int NumLowBitsAvailable = 2;
76};
77 
78// Provide PointerLikeTypeTraits for const things.
79template <typename T> struct PointerLikeTypeTraits<const T> {
80  typedef PointerLikeTypeTraits<T> NonConst;
81 
82  static inline const void *getAsVoidPointer(const T P) {
83    return NonConst::getAsVoidPointer(P);
84  }
85  static inline const T getFromVoidPointer(const void *P) {
86    return NonConst::getFromVoidPointer(const_cast<void *>(P));
87  }
88  static constexpr int NumLowBitsAvailable = NonConst::NumLowBitsAvailable;
89};
90 
91// Provide PointerLikeTypeTraits for const pointers.
92template <typename T> struct PointerLikeTypeTraits<const T *> {
93  typedef PointerLikeTypeTraits<T *> NonConst;
94 
95  static inline const void *getAsVoidPointer(const T *P) {
96    return NonConst::getAsVoidPointer(const_cast<T *>(P));
97  }
98  static inline const T *getFromVoidPointer(const void *P) {
99    return NonConst::getFromVoidPointer(const_cast<void *>(P));
49
←
Passing value via 1st parameter 'P'→
50
←
Returning pointer→
100  }
101  static constexpr int NumLowBitsAvailable = NonConst::NumLowBitsAvailable;
102};
103 
104// Provide PointerLikeTypeTraits for uintptr_t.
105template <> struct PointerLikeTypeTraits<uintptr_t> {
106  static inline void *getAsVoidPointer(uintptr_t P) {
107    return reinterpret_cast<void *>(P);
108  }
109  static inline uintptr_t getFromVoidPointer(void *P) {
110    return reinterpret_cast<uintptr_t>(P);
111  }
112  // No bits are available!
113  static constexpr int NumLowBitsAvailable = 0;
114};
115 
116/// Provide suitable custom traits struct for function pointers.
117///
118/// Function pointers can't be directly given these traits as functions can't
119/// have their alignment computed with `alignof` and we need different casting.
120///
121/// To rely on higher alignment for a specialized use, you can provide a
122/// customized form of this template explicitly with higher alignment, and
123/// potentially use alignment attributes on functions to satisfy that.
124template <int Alignment, typename FunctionPointerT>
125struct FunctionPointerLikeTypeTraits {
126  static constexpr int NumLowBitsAvailable =
127      detail::ConstantLog2<Alignment>::value;
128  static inline void *getAsVoidPointer(FunctionPointerT P) {
129    assert((reinterpret_cast<uintptr_t>(P) &(static_cast <bool> ((reinterpret_cast<uintptr_t>
(P) & ~((uintptr_t)-1 << NumLowBitsAvailable)) == 0
 && "Alignment not satisfied for an actual function pointer!"
) ? void (0) : __assert_fail ("(reinterpret_cast<uintptr_t>(P) & ~((uintptr_t)-1 << NumLowBitsAvailable)) == 0 && \"Alignment not satisfied for an actual function pointer!\""
, "/build/llvm-toolchain-snapshot-13~++20210726100616+dead50d4427c/llvm/include/llvm/Support/PointerLikeTypeTraits.h"
, 131, __extension__ __PRETTY_FUNCTION__))
130            ~((uintptr_t)-1 << NumLowBitsAvailable)) == 0 &&(static_cast <bool> ((reinterpret_cast<uintptr_t>
(P) & ~((uintptr_t)-1 << NumLowBitsAvailable)) == 0
 && "Alignment not satisfied for an actual function pointer!"
) ? void (0) : __assert_fail ("(reinterpret_cast<uintptr_t>(P) & ~((uintptr_t)-1 << NumLowBitsAvailable)) == 0 && \"Alignment not satisfied for an actual function pointer!\""
, "/build/llvm-toolchain-snapshot-13~++20210726100616+dead50d4427c/llvm/include/llvm/Support/PointerLikeTypeTraits.h"
, 131, __extension__ __PRETTY_FUNCTION__))
131           "Alignment not satisfied for an actual function pointer!")(static_cast <bool> ((reinterpret_cast<uintptr_t>
(P) & ~((uintptr_t)-1 << NumLowBitsAvailable)) == 0
 && "Alignment not satisfied for an actual function pointer!"
) ? void (0) : __assert_fail ("(reinterpret_cast<uintptr_t>(P) & ~((uintptr_t)-1 << NumLowBitsAvailable)) == 0 && \"Alignment not satisfied for an actual function pointer!\""
, "/build/llvm-toolchain-snapshot-13~++20210726100616+dead50d4427c/llvm/include/llvm/Support/PointerLikeTypeTraits.h"
, 131, __extension__ __PRETTY_FUNCTION__));
132    return reinterpret_cast<void *>(P);
133  }
134  static inline FunctionPointerT getFromVoidPointer(void *P) {
135    return reinterpret_cast<FunctionPointerT>(P);
136  }
137};
138 
139/// Provide a default specialization for function pointers that assumes 4-byte
140/// alignment.
141///
142/// We assume here that functions used with this are always at least 4-byte
143/// aligned. This means that, for example, thumb functions won't work or systems
144/// with weird unaligned function pointers won't work. But all practical systems
145/// we support satisfy this requirement.
146template <typename ReturnT, typename... ParamTs>
147struct PointerLikeTypeTraits<ReturnT (*)(ParamTs...)>
148    : FunctionPointerLikeTypeTraits<4, ReturnT (*)(ParamTs...)> {};
149 
150} // end namespace llvm
151 
152#endif