clang
3.9.0
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#include "CGCXXABI.h"
#include "CGCall.h"
#include "CGCleanup.h"
#include "CGDebugInfo.h"
#include "CGObjCRuntime.h"
#include "CGOpenMPRuntime.h"
#include "CGRecordLayout.h"
#include "CodeGenFunction.h"
#include "CodeGenModule.h"
#include "TargetInfo.h"
#include "clang/AST/ASTContext.h"
#include "clang/AST/Attr.h"
#include "clang/AST/DeclObjC.h"
#include "clang/Frontend/CodeGenOptions.h"
#include "llvm/ADT/Hashing.h"
#include "llvm/ADT/StringExtras.h"
#include "llvm/IR/DataLayout.h"
#include "llvm/IR/Intrinsics.h"
#include "llvm/IR/LLVMContext.h"
#include "llvm/IR/MDBuilder.h"
#include "llvm/Support/ConvertUTF.h"
#include "llvm/Support/MathExtras.h"
#include "llvm/Support/Path.h"
#include "llvm/Transforms/Utils/SanitizerStats.h"
Go to the source code of this file.
Enumerations | |
enum | ConstantEmissionKind { CEK_None, CEK_AsReferenceOnly, CEK_AsValueOrReference, CEK_AsValueOnly } |
Can we constant-emit a load of a reference to a variable of the given type? This is different from predicates like Decl::isUsableInConstantExpressions because we do want it to apply in situations that don't necessarily satisfy the language's rules for this (e.g. More... | |
enum | CheckRecoverableKind |
Specify under what conditions this check can be recovered. More... | |
Functions | |
static void | pushTemporaryCleanup (CodeGenFunction &CGF, const MaterializeTemporaryExpr *M, const Expr *E, Address ReferenceTemporary) |
static Address | createReferenceTemporary (CodeGenFunction &CGF, const MaterializeTemporaryExpr *M, const Expr *Inner) |
static llvm::Value * | emitHash16Bytes (CGBuilderTy &Builder, llvm::Value *Low, llvm::Value *High) |
Emit the hash_16_bytes function from include/llvm/ADT/Hashing.h. More... | |
static bool | isFlexibleArrayMemberExpr (const Expr *E) |
Determine whether this expression refers to a flexible array member in a struct. More... | |
static llvm::Value * | getArrayIndexingBound (CodeGenFunction &CGF, const Expr *Base, QualType &IndexedType) |
If Base is known to point to the start of an array, return the length of that array. More... | |
static bool | isConstantEmittableObjectType (QualType type) |
Given an object of the given canonical type, can we safely copy a value out of it based on its initializer? More... | |
static ConstantEmissionKind | checkVarTypeForConstantEmission (QualType type) |
static bool | hasBooleanRepresentation (QualType Ty) |
static bool | getRangeForType (CodeGenFunction &CGF, QualType Ty, llvm::APInt &Min, llvm::APInt &End, bool StrictEnums) |
static void | setObjCGCLValueClass (const ASTContext &Ctx, const Expr *E, LValue &LV, bool IsMemberAccess=false) |
static llvm::Value * | EmitBitCastOfLValueToProperType (CodeGenFunction &CGF, llvm::Value *V, llvm::Type *IRType, StringRef Name=StringRef()) |
static LValue | EmitThreadPrivateVarDeclLValue (CodeGenFunction &CGF, const VarDecl *VD, QualType T, Address Addr, llvm::Type *RealVarTy, SourceLocation Loc) |
static LValue | EmitGlobalVarDeclLValue (CodeGenFunction &CGF, const Expr *E, const VarDecl *VD) |
static LValue | EmitFunctionDeclLValue (CodeGenFunction &CGF, const Expr *E, const FunctionDecl *FD) |
static LValue | EmitCapturedFieldLValue (CodeGenFunction &CGF, const FieldDecl *FD, llvm::Value *ThisValue) |
static LValue | EmitGlobalNamedRegister (const VarDecl *VD, CodeGenModule &CGM) |
Named Registers are named metadata pointing to the register name which will be read from/written to as an argument to the intrinsic .read/write_register. More... | |
static CheckRecoverableKind | getRecoverableKind (SanitizerMask Kind) |
static void | emitCheckHandlerCall (CodeGenFunction &CGF, llvm::FunctionType *FnType, ArrayRef< llvm::Value * > FnArgs, StringRef CheckName, CheckRecoverableKind RecoverKind, bool IsFatal, llvm::BasicBlock *ContBB) |
static const Expr * | isSimpleArrayDecayOperand (const Expr *E) |
isSimpleArrayDecayOperand - If the specified expr is a simple decay from an array to pointer, return the array subexpression. More... | |
static llvm::Value * | emitArraySubscriptGEP (CodeGenFunction &CGF, llvm::Value *ptr, ArrayRef< llvm::Value * > indices, bool inbounds, const llvm::Twine &name="arrayidx") |
static CharUnits | getArrayElementAlign (CharUnits arrayAlign, llvm::Value *idx, CharUnits eltSize) |
static QualType | getFixedSizeElementType (const ASTContext &ctx, const VariableArrayType *vla) |
static Address | emitArraySubscriptGEP (CodeGenFunction &CGF, Address addr, ArrayRef< llvm::Value * > indices, QualType eltType, bool inbounds, const llvm::Twine &name="arrayidx") |
static Address | emitOMPArraySectionBase (CodeGenFunction &CGF, const Expr *Base, AlignmentSource &AlignSource, QualType BaseTy, QualType ElTy, bool IsLowerBound) |
static Address | emitAddrOfFieldStorage (CodeGenFunction &CGF, Address base, const FieldDecl *field) |
Drill down to the storage of a field without walking into reference types. More... | |
static Optional< LValue > | EmitLValueOrThrowExpression (CodeGenFunction &CGF, const Expr *Operand) |
Emit the operand of a glvalue conditional operator. More... | |
static LValueOrRValue | emitPseudoObjectExpr (CodeGenFunction &CGF, const PseudoObjectExpr *E, bool forLValue, AggValueSlot slot) |
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Specify under what conditions this check can be recovered.
Definition at line 2439 of file CGExpr.cpp.
enum ConstantEmissionKind |
Can we constant-emit a load of a reference to a variable of the given type? This is different from predicates like Decl::isUsableInConstantExpressions because we do want it to apply in situations that don't necessarily satisfy the language's rules for this (e.g.
C++'s ODR-use rules). For example, we want to able to do this with const float variables even if those variables aren't marked 'constexpr'.
Enumerator | |
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CEK_None | |
CEK_AsReferenceOnly | |
CEK_AsValueOrReference | |
CEK_AsValueOnly |
Definition at line 1111 of file CGExpr.cpp.
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Definition at line 1117 of file CGExpr.cpp.
References CEK_AsReferenceOnly, CEK_AsValueOnly, CEK_AsValueOrReference, CEK_None, clang::QualType::getCanonicalType(), and isConstantEmittableObjectType().
Referenced by clang::CodeGen::CodeGenFunction::tryEmitAsConstant().
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Definition at line 316 of file CGExpr.cpp.
References clang::CodeGen::CodeGenFunction::CGM, clang::CodeGen::CodeGenFunction::CreateMemTemp(), clang::CodeGen::CodeGenModule::EmitConstantExpr(), clang::CodeGen::CodeGenModule::GetAddrOfGlobalTemporary(), clang::CodeGen::CodeGenModule::getCodeGenOpts(), clang::CodeGen::CodeGenFunction::getContext(), clang::CodeGen::CodeGenModule::getModule(), clang::MaterializeTemporaryExpr::getStorageDuration(), clang::Expr::getType(), clang::ASTContext::getTypeAlignInChars(), clang::Type::isArrayType(), clang::Type::isRecordType(), clang::CodeGen::CodeGenModule::isTypeConstant(), clang::SD_Automatic, clang::SD_Dynamic, clang::SD_FullExpression, clang::SD_Static, and clang::SD_Thread.
Referenced by clang::CodeGen::CodeGenFunction::EmitMaterializeTemporaryExpr().
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Drill down to the storage of a field without walking into reference types.
The resulting address doesn't necessarily have the right type.
Definition at line 3287 of file CGExpr.cpp.
References clang::CodeGen::CodeGenFunction::Builder, clang::CodeGen::CodeGenFunction::CGM, clang::CodeGen::CGBuilderTy::CreateStructGEP(), clang::ASTContext::getASTRecordLayout(), clang::CodeGen::CodeGenTypes::getCGRecordLayout(), clang::CodeGen::CodeGenFunction::getContext(), clang::FieldDecl::getFieldIndex(), clang::ASTRecordLayout::getFieldOffset(), clang::CodeGen::CGRecordLayout::getLLVMFieldNo(), clang::NamedDecl::getName(), clang::FieldDecl::getParent(), clang::CodeGen::CodeGenModule::getTypes(), and clang::ASTContext::toCharUnitsFromBits().
Referenced by clang::CodeGen::CodeGenFunction::EmitLValueForField(), and clang::CodeGen::CodeGenFunction::EmitLValueForFieldInitialization().
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Definition at line 2806 of file CGExpr.cpp.
References clang::CodeGen::CodeGenFunction::Builder.
Referenced by clang::CodeGen::CodeGenFunction::EmitArraySubscriptExpr(), emitArraySubscriptGEP(), and clang::CodeGen::CodeGenFunction::EmitOMPArraySectionExpr().
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Definition at line 2842 of file CGExpr.cpp.
References emitArraySubscriptGEP(), clang::CodeGen::Address::getAlignment(), getArrayElementAlign(), clang::ASTContext::getAsVariableArrayType(), clang::CodeGen::CodeGenFunction::getContext(), getFixedSizeElementType(), clang::CodeGen::Address::getPointer(), and clang::ASTContext::getTypeSizeInChars().
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Definition at line 1943 of file CGExpr.cpp.
References clang::CodeGen::CodeGenFunction::Builder, clang::CodeGen::CGBuilderTy::CreateBitCast(), and clang::Name.
Referenced by EmitGlobalVarDeclLValue().
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Definition at line 2037 of file CGExpr.cpp.
References clang::CodeGen::CodeGenFunction::EmitLValueForField(), clang::CodeGen::CodeGenFunction::getContext(), clang::FieldDecl::getParent(), clang::ASTContext::getTagDeclType(), and clang::CodeGen::CodeGenFunction::MakeNaturalAlignAddrLValue().
Referenced by clang::CodeGen::CodeGenFunction::EmitDeclRefLValue().
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Definition at line 2463 of file CGExpr.cpp.
References clang::CodeGen::CodeGenFunction::Builder, clang::CodeGen::CodeGenFunction::CGM, clang::CodeGen::CodeGenModule::CreateRuntimeFunction(), clang::CodeGen::CodeGenFunction::EmitNounwindRuntimeCall(), clang::CodeGen::CodeGenFunction::getLLVMContext(), and Unrecoverable.
Referenced by clang::CodeGen::CodeGenFunction::EmitCheck().
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Definition at line 2018 of file CGExpr.cpp.
References clang::CodeGen::CodeGenFunction::Builder, clang::CodeGen::CodeGenFunction::CGM, clang::CodeGen::CodeGenFunction::ConvertType(), clang::CodeGen::CGBuilderTy::CreateBitCast(), clang::CodeGen::CodeGenModule::GetAddrOfFunction(), clang::Type::getAs(), clang::CodeGen::CodeGenFunction::getContext(), clang::ASTContext::getDeclAlign(), clang::ASTContext::getFunctionNoProtoType(), clang::ASTContext::getPointerType(), clang::Expr::getType(), clang::ValueDecl::getType(), clang::FunctionDecl::hasPrototype(), and clang::CodeGen::CodeGenFunction::MakeAddrLValue().
Referenced by clang::CodeGen::CodeGenFunction::EmitDeclRefLValue(), and clang::CodeGen::CodeGenFunction::EmitMemberExpr().
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Named Registers are named metadata pointing to the register name which will be read from/written to as an argument to the intrinsic .read/write_register.
So far, only the name is being passed down, but other options such as register type, allocation type or even optimization options could be passed down via the metadata node.
Definition at line 2050 of file CGExpr.cpp.
References clang::CodeGen::CodeGenModule::getContext(), clang::ASTContext::getDeclAlign(), clang::CodeGen::CodeGenModule::getLLVMContext(), clang::CodeGen::CodeGenModule::getModule(), clang::ValueDecl::getType(), and clang::Name.
Referenced by clang::CodeGen::CodeGenFunction::EmitDeclRefLValue().
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Definition at line 1989 of file CGExpr.cpp.
References clang::CodeGen::CodeGenFunction::CGM, clang::CodeGen::CodeGenTypes::ConvertTypeForMem(), E, EmitBitCastOfLValueToProperType(), clang::CodeGen::CodeGenFunction::EmitLoadOfReferenceLValue(), clang::CodeGen::CGCXXABI::EmitThreadLocalVarDeclLValue(), EmitThreadPrivateVarDeclLValue(), clang::CodeGen::CodeGenModule::GetAddrOfGlobalVar(), clang::Type::getAs(), clang::CodeGen::CodeGenFunction::getContext(), clang::CodeGen::CodeGenModule::getCXXABI(), clang::ASTContext::getDeclAlign(), clang::Expr::getExprLoc(), clang::CodeGen::CodeGenFunction::getLangOpts(), clang::VarDecl::getTLSKind(), clang::Expr::getType(), clang::ValueDecl::getType(), clang::CodeGen::CodeGenFunction::getTypes(), clang::CodeGen::CodeGenFunction::MakeAddrLValue(), setObjCGCLValueClass(), clang::VarDecl::TLS_Dynamic, and clang::CodeGen::CGCXXABI::usesThreadWrapperFunction().
Referenced by clang::CodeGen::CodeGenFunction::EmitDeclRefLValue(), and clang::CodeGen::CodeGenFunction::EmitMemberExpr().
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Emit the hash_16_bytes function from include/llvm/ADT/Hashing.h.
Definition at line 514 of file CGExpr.cpp.
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Emit the operand of a glvalue conditional operator.
This is either a glvalue or a (possibly-parenthesized) throw-expression. If this is a throw, no LValue is returned and the current block has been terminated.
Definition at line 3472 of file CGExpr.cpp.
References clang::CodeGen::CodeGenFunction::EmitCXXThrowExpr(), clang::CodeGen::CodeGenFunction::EmitLValue(), clang::Expr::IgnoreParens(), and clang::None.
Referenced by clang::CodeGen::CodeGenFunction::EmitConditionalOperatorLValue().
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Definition at line 2999 of file CGExpr.cpp.
References clang::CodeGen::CodeGenFunction::Builder, clang::CodeGen::CodeGenFunction::ConvertType(), clang::CodeGen::CodeGenFunction::ConvertTypeForMem(), clang::CodeGen::CGBuilderTy::CreateElementBitCast(), clang::CodeGen::CGBuilderTy::CreateLoad(), clang::CodeGen::CGBuilderTy::CreateStructGEP(), clang::CodeGen::CodeGenFunction::EmitOMPArraySectionExpr(), clang::CodeGen::CodeGenFunction::EmitPointerWithAlignment(), clang::CodeGen::LValue::getAddress(), clang::CodeGen::LValue::getAlignmentSource(), clang::CodeGen::Address::getElementType(), clang::CodeGen::CodeGenFunction::getNaturalTypeAlignment(), clang::Expr::IgnoreParenImpCasts(), clang::Type::isArrayType(), clang::Type::isVariableArrayType(), and clang::CharUnits::Zero().
Referenced by clang::CodeGen::CodeGenFunction::EmitOMPArraySectionExpr().
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Definition at line 4189 of file CGExpr.cpp.
References clang::CodeGen::AggValueSlot::asRValue(), clang::CodeGen::CodeGenFunction::EmitAggExpr(), clang::CodeGen::CodeGenFunction::EmitAnyExpr(), clang::CodeGen::CodeGenFunction::EmitIgnoredExpr(), clang::CodeGen::CodeGenFunction::EmitLValue(), clang::CodeGen::AggValueSlot::getAddress(), clang::PseudoObjectExpr::getResultExpr(), clang::CodeGen::Address::getType(), clang::Expr::isRValue(), clang::CodeGen::CodeGenFunction::MakeAddrLValue(), clang::PseudoObjectExpr::semantics_begin(), and clang::PseudoObjectExpr::semantics_end().
Referenced by clang::CodeGen::CodeGenFunction::EmitPseudoObjectLValue(), and clang::CodeGen::CodeGenFunction::EmitPseudoObjectRValue().
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Definition at line 1950 of file CGExpr.cpp.
References clang::CodeGen::CodeGenFunction::Builder, clang::CodeGen::CodeGenFunction::CGM, clang::CodeGen::CGBuilderTy::CreateElementBitCast(), clang::CodeGen::CodeGenModule::getOpenMPRuntime(), and clang::CodeGen::CodeGenFunction::MakeAddrLValue().
Referenced by clang::CodeGen::CodeGenFunction::EmitDeclRefLValue(), and EmitGlobalVarDeclLValue().
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Definition at line 2818 of file CGExpr.cpp.
References clang::CharUnits::alignmentAtOffset(), and clang::CharUnits::alignmentOfArrayElement().
Referenced by clang::CodeGen::CodeGenFunction::EmitArraySubscriptExpr(), and emitArraySubscriptGEP().
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If Base is known to point to the start of an array, return the length of that array.
Return 0 if the length cannot be determined.
Definition at line 718 of file CGExpr.cpp.
References clang::CodeGen::CodeGenFunction::Builder, clang::Type::castAsArrayTypeUnsafe(), clang::Type::getAs(), clang::Expr::getType(), clang::CodeGen::CodeGenFunction::getVLASize(), clang::Expr::IgnoreParens(), and isFlexibleArrayMemberExpr().
Referenced by clang::CodeGen::CodeGenFunction::EmitBoundsCheck().
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Definition at line 2833 of file CGExpr.cpp.
References clang::ASTContext::getAsVariableArrayType(), and clang::ArrayType::getElementType().
Referenced by emitArraySubscriptGEP().
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Definition at line 1218 of file CGExpr.cpp.
References clang::CodeGen::CodeGenFunction::ConvertTypeForMem(), End, clang::Type::getAs(), clang::CodeGen::CodeGenFunction::getContext(), clang::EnumType::getDecl(), clang::EnumDecl::getIntegerType(), clang::CodeGen::CodeGenFunction::getLangOpts(), clang::EnumDecl::getNumNegativeBits(), clang::EnumDecl::getNumPositiveBits(), clang::ASTContext::getTypeSize(), hasBooleanRepresentation(), clang::EnumDecl::isFixed(), and max().
Referenced by clang::CodeGen::CodeGenFunction::EmitLoadOfScalar().
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Definition at line 2450 of file CGExpr.cpp.
References Unrecoverable.
Referenced by clang::CodeGen::CodeGenFunction::EmitCheck().
Definition at line 1205 of file CGExpr.cpp.
References clang::Type::getAs(), and clang::Type::isBooleanType().
Referenced by clang::CodeGen::CodeGenFunction::EmitFromMemory(), clang::CodeGen::CodeGenFunction::EmitLoadOfScalar(), clang::CodeGen::CodeGenFunction::EmitStoreThroughBitfieldLValue(), clang::CodeGen::CodeGenFunction::EmitToMemory(), and getRangeForType().
Given an object of the given canonical type, can we safely copy a value out of it based on its initializer?
Definition at line 1086 of file CGExpr.cpp.
References clang::QualType::getLocalQualifiers(), clang::QualType::isCanonical(), and clang::Type::isReferenceType().
Referenced by checkVarTypeForConstantEmission().
Determine whether this expression refers to a flexible array member in a struct.
We disable array bounds checks for such members.
Definition at line 690 of file CGExpr.cpp.
References clang::Type::castAsArrayTypeUnsafe(), clang::Expr::getType(), and clang::Expr::IgnoreParens().
Referenced by getArrayIndexingBound().
isSimpleArrayDecayOperand - If the specified expr is a simple decay from an array to pointer, return the array subexpression.
Definition at line 2792 of file CGExpr.cpp.
References E, clang::Expr::getType(), and clang::Type::isVariableArrayType().
Referenced by clang::CodeGen::CodeGenFunction::EmitArraySubscriptExpr(), and clang::CodeGen::CodeGenFunction::EmitOMPArraySectionExpr().
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Definition at line 199 of file CGExpr.cpp.
References clang::CodeGen::CodeGenFunction::CGM, clang::CodeGen::Complete, clang::CodeGen::Destroy(), clang::CodeGen::CodeGenFunction::destroyARCStrongImprecise, clang::CodeGen::CodeGenFunction::destroyARCStrongPrecise, clang::CodeGen::CodeGenFunction::destroyARCWeak, clang::CodeGen::CodeGenFunction::destroyCXXObject, clang::CodeGen::EHCleanup, clang::CodeGen::CodeGenFunction::generateDestroyHelper(), clang::CodeGen::CodeGenModule::getAddrOfCXXStructor(), clang::CodeGen::CodeGenFunction::getARCCleanupKind(), clang::Type::getAs(), clang::Type::getBaseElementTypeUnsafe(), clang::CodeGen::CodeGenModule::getCXXABI(), clang::MaterializeTemporaryExpr::getExtendingDecl(), clang::CodeGen::CodeGenFunction::getLangOpts(), clang::QualType::getObjCLifetime(), clang::CodeGen::Address::getPointer(), clang::MaterializeTemporaryExpr::getStorageDuration(), clang::Expr::getType(), clang::CodeGen::CodeGenTypeCache::Int8PtrTy, clang::Type::isArrayType(), clang::CodeGen::NormalAndEHCleanup, clang::Qualifiers::OCL_Autoreleasing, clang::Qualifiers::OCL_ExplicitNone, clang::Qualifiers::OCL_None, clang::Qualifiers::OCL_Strong, clang::Qualifiers::OCL_Weak, clang::CodeGen::CodeGenFunction::pushDestroy(), clang::CodeGen::CodeGenFunction::pushLifetimeExtendedDestroy(), clang::CodeGen::CGCXXABI::registerGlobalDtor(), clang::SD_Automatic, clang::SD_Dynamic, clang::SD_FullExpression, clang::SD_Static, and clang::SD_Thread.
Referenced by clang::CodeGen::CodeGenFunction::EmitMaterializeTemporaryExpr().
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Definition at line 1845 of file CGExpr.cpp.
References E, clang::Type::getAs(), clang::ASTContext::getLangOpts(), clang::PointerType::getPointeeType(), clang::Expr::getType(), clang::Type::isArrayType(), clang::CodeGen::LValue::isGlobalObjCRef(), clang::CodeGen::LValue::isObjCArray(), clang::CodeGen::LValue::isObjCIvar(), clang::Type::isPointerType(), clang::Type::isRecordType(), clang::LangOptions::NonGC, clang::CodeGen::LValue::setBaseIvarExp(), clang::CodeGen::LValue::setGlobalObjCRef(), clang::CodeGen::LValue::setObjCArray(), clang::CodeGen::LValue::setObjCIvar(), clang::CodeGen::LValue::setThreadLocalRef(), and clang::VarDecl::TLS_None.
Referenced by clang::CodeGen::CodeGenFunction::EmitArraySubscriptExpr(), clang::CodeGen::CodeGenFunction::EmitDeclRefLValue(), EmitGlobalVarDeclLValue(), clang::CodeGen::CodeGenFunction::EmitMemberExpr(), and clang::CodeGen::CodeGenFunction::EmitObjCIvarRefLValue().