CGExpr.cpp File Reference

#include "ABIInfoImpl.h"
#include "CGCUDARuntime.h"
#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 "ConstantEmitter.h"
#include "TargetInfo.h"
#include "clang/AST/ASTContext.h"
#include "clang/AST/Attr.h"
#include "clang/AST/DeclObjC.h"
#include "clang/AST/NSAPI.h"
#include "clang/AST/StmtVisitor.h"
#include "clang/Basic/Builtins.h"
#include "clang/Basic/CodeGenOptions.h"
#include "clang/Basic/SourceManager.h"
#include "llvm/ADT/Hashing.h"
#include "llvm/ADT/STLExtras.h"
#include "llvm/ADT/StringExtras.h"
#include "llvm/IR/DataLayout.h"
#include "llvm/IR/Intrinsics.h"
#include "llvm/IR/IntrinsicsWebAssembly.h"
#include "llvm/IR/LLVMContext.h"
#include "llvm/IR/MDBuilder.h"
#include "llvm/IR/MatrixBuilder.h"
#include "llvm/Passes/OptimizationLevel.h"
#include "llvm/Support/ConvertUTF.h"
#include "llvm/Support/Endian.h"
#include "llvm/Support/MathExtras.h"
#include "llvm/Support/Path.h"
#include "llvm/Support/SaveAndRestore.h"
#include "llvm/Support/xxhash.h"
#include "llvm/Transforms/Utils/SanitizerStats.h"
#include <optional>
#include <string>

Go to the source code of this file.

Macros
#define	SANITIZER_CHECK(Enum, Name, Version)   {#Name, Version},

Typedefs
using	RecIndicesTy = SmallVector< llvm::Value *, 8 >

Enumerations
enum	VariableTypeDescriptorKind : uint16_t { TK_Integer = 0x0000 , TK_Float = 0x0001 , TK_BitInt = 0x0002 , TK_Unknown = 0xffff }
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::mightBeUsableInConstantExpressions because we do want it to apply in situations that don't necessarily satisfy the language's rules for this (e.g. More...

Functions
static llvm::cl::opt< bool >	ClSanitizeDebugDeoptimization ("ubsan-unique-traps", llvm::cl::Optional, llvm::cl::desc("Deoptimize traps for UBSAN so there is 1 trap per check."))
static llvm::cl::opt< bool >	ClSanitizeGuardChecks ("ubsan-guard-checks", llvm::cl::Optional, llvm::cl::desc("Guard UBSAN checks with `llvm.allow.ubsan.check()`."))
static void	pushTemporaryCleanup (CodeGenFunction &CGF, const MaterializeTemporaryExpr *M, const Expr *E, Address ReferenceTemporary)
static RawAddress	createReferenceTemporary (CodeGenFunction &CGF, const MaterializeTemporaryExpr *M, const Expr *Inner, RawAddress *Alloca=nullptr)
static bool	isAAPCS (const TargetInfo &TargetInfo)
	Helper method to check if the underlying ABI is AAPCS.
static llvm::Value *	emitHashMix (CGBuilderTy &Builder, llvm::Value *Acc, llvm::Value *Ptr)
static llvm::Value *	getArrayIndexingBound (CodeGenFunction &CGF, const Expr *Base, QualType &IndexedType, LangOptions::StrictFlexArraysLevelKind StrictFlexArraysLevel)
	If Base is known to point to the start of an array, return the length of that array.
static bool	getGEPIndicesToField (CodeGenFunction &CGF, const RecordDecl *RD, const FieldDecl *Field, RecIndicesTy &Indices)
static Address	EmitPointerWithAlignment (const Expr *E, LValueBaseInfo *BaseInfo, TBAAAccessInfo *TBAAInfo, KnownNonNull_t IsKnownNonNull, CodeGenFunction &CGF)
static QualType	getConstantExprReferredType (const FullExpr *E, const ASTContext &Ctx)
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?
static ConstantEmissionKind	checkVarTypeForConstantEmission (QualType type)
static DeclRefExpr *	tryToConvertMemberExprToDeclRefExpr (CodeGenFunction &CGF, const MemberExpr *ME)
static bool	hasBooleanRepresentation (QualType Ty)
static bool	getRangeForType (CodeGenFunction &CGF, QualType Ty, llvm::APInt &Min, llvm::APInt &End, bool StrictEnums, bool IsBool)
static RawAddress	MaybeConvertMatrixAddress (RawAddress Addr, CodeGenFunction &CGF, bool IsVector=true)
static void	EmitStoreOfMatrixScalar (llvm::Value *value, LValue lvalue, bool isInit, CodeGenFunction &CGF)
static RValue	EmitLoadOfMatrixLValue (LValue LV, SourceLocation Loc, CodeGenFunction &CGF)
static void	setObjCGCLValueClass (const ASTContext &Ctx, const Expr *E, LValue &LV, bool IsMemberAccess=false)
static LValue	EmitThreadPrivateVarDeclLValue (CodeGenFunction &CGF, const VarDecl *VD, QualType T, Address Addr, llvm::Type *RealVarTy, SourceLocation Loc)
static Address	emitDeclTargetVarDeclLValue (CodeGenFunction &CGF, const VarDecl *VD, QualType T)
static LValue	EmitGlobalVarDeclLValue (CodeGenFunction &CGF, const Expr *E, const VarDecl *VD)
static LValue	EmitFunctionDeclLValue (CodeGenFunction &CGF, const Expr *E, GlobalDecl GD)
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 @llvm.read/write_register.
static bool	canEmitSpuriousReferenceToVariable (CodeGenFunction &CGF, const DeclRefExpr *E, const VarDecl *VD)
	Determine whether we can emit a reference to VD from the current context, despite not necessarily having seen an odr-use of the variable in this context.
static CheckRecoverableKind	getRecoverableKind (SanitizerMask Kind)
static void	emitCheckHandlerCall (CodeGenFunction &CGF, llvm::FunctionType *FnType, ArrayRef< llvm::Value * > FnArgs, SanitizerHandler CheckHandler, 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.
static llvm::Value *	emitArraySubscriptGEP (CodeGenFunction &CGF, llvm::Type *elemType, llvm::Value *ptr, ArrayRef< llvm::Value * > indices, bool inbounds, bool signedIndices, SourceLocation loc, const llvm::Twine &name="arrayidx")
static Address	emitArraySubscriptGEP (CodeGenFunction &CGF, Address addr, ArrayRef< llvm::Value * > indices, llvm::Type *elementType, bool inbounds, bool signedIndices, SourceLocation loc, CharUnits align, 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 bool	hasBPFPreserveStaticOffset (const RecordDecl *D)
static bool	hasBPFPreserveStaticOffset (const Expr *E)
static Address	wrapWithBPFPreserveStaticOffset (CodeGenFunction &CGF, Address &Addr)
static bool	IsPreserveAIArrayBase (CodeGenFunction &CGF, const Expr *ArrayBase)
	Given an array base, check whether its member access belongs to a record with preserve_access_index attribute or not.
static Address	emitArraySubscriptGEP (CodeGenFunction &CGF, Address addr, ArrayRef< llvm::Value * > indices, QualType eltType, bool inbounds, bool signedIndices, SourceLocation loc, QualType *arrayType=nullptr, const Expr *Base=nullptr, const llvm::Twine &name="arrayidx")
static bool	getFieldOffsetInBits (CodeGenFunction &CGF, const RecordDecl *RD, const FieldDecl *Field, int64_t &Offset)
	The offset of a field from the beginning of the record.
static std::optional< int64_t >	getOffsetDifferenceInBits (CodeGenFunction &CGF, const FieldDecl *FD1, const FieldDecl *FD2)
	Returns the relative offset difference between FD1 and FD2.
static Address	emitOMPArraySectionBase (CodeGenFunction &CGF, const Expr *Base, LValueBaseInfo &BaseInfo, TBAAAccessInfo &TBAAInfo, QualType BaseTy, QualType ElTy, bool IsLowerBound)
static Address	emitAddrOfZeroSizeField (CodeGenFunction &CGF, Address Base, const FieldDecl *Field)
	Get the address of a zero-sized field within a record.
static Address	emitAddrOfFieldStorage (CodeGenFunction &CGF, Address base, const FieldDecl *field)
	Drill down to the storage of a field without walking into reference types.
static Address	emitPreserveStructAccess (CodeGenFunction &CGF, LValue base, Address addr, const FieldDecl *field)
static bool	hasAnyVptr (const QualType Type, const ASTContext &Context)
static std::optional< LValue >	EmitLValueOrThrowExpression (CodeGenFunction &CGF, const Expr *Operand)
	Emit the operand of a glvalue conditional operator.
static bool	OnlyHasInlineBuiltinDeclaration (const FunctionDecl *FD)
static CGCallee	EmitDirectCallee (CodeGenFunction &CGF, GlobalDecl GD)
static LValueOrRValue	emitPseudoObjectExpr (CodeGenFunction &CGF, const PseudoObjectExpr *E, bool forLValue, AggValueSlot slot)

Variables
const SanitizerHandlerInfo	SanitizerHandlers []

Macro Definition Documentation

SANITIZER_CHECK

#define SANITIZER_CHECK	(		Enum,
			Name,
			Version
	)		{#Name, Version},

Typedef Documentation

RecIndicesTy

using RecIndicesTy = SmallVector<llvm::Value *, 8>

Definition at line 1088 of file CGExpr.cpp.

Enumeration Type Documentation

ConstantEmissionKind

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::mightBeUsableInConstantExpressions 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
CEK_None
CEK_AsReferenceOnly
CEK_AsValueOrReference
CEK_AsValueOnly

Definition at line 1705 of file CGExpr.cpp.

VariableTypeDescriptorKind

enum VariableTypeDescriptorKind : uint16_t

Enumerator
TK_Integer	An integer type.
TK_Float	A floating-point type.
TK_BitInt	An _BitInt(N) type.
TK_Unknown	Any other type. The value representation is unspecified.

Definition at line 74 of file CGExpr.cpp.

Function Documentation

canEmitSpuriousReferenceToVariable()

static bool canEmitSpuriousReferenceToVariable ( CodeGenFunction &  CGF, const DeclRefExpr *  E, const VarDecl *  VD  )

static

Determine whether we can emit a reference to VD from the current context, despite not necessarily having seen an odr-use of the variable in this context.

Definition at line 2937 of file CGExpr.cpp.

References clang::CodeGen::CodeGenFunction::CGM, clang::CodeGen::CodeGenFunction::CurCodeDecl, E, clang::CodeGen::CodeGenFunction::getContext(), clang::Decl::getDeclContext(), clang::VarDecl::getDefinition(), clang::CodeGen::CodeGenFunction::getLangOpts(), clang::CodeGen::CodeGenModule::getLLVMLinkageVarDefinition(), and clang::VarDecl::hasLocalStorage().

checkVarTypeForConstantEmission()

static ConstantEmissionKind checkVarTypeForConstantEmission ( QualType  type )

static

Definition at line 1711 of file CGExpr.cpp.

References CEK_AsReferenceOnly, CEK_AsValueOnly, CEK_AsValueOrReference, CEK_None, isConstantEmittableObjectType(), and clang::ast_matchers::type.

ClSanitizeDebugDeoptimization()

static llvm::cl::opt< bool > ClSanitizeDebugDeoptimization ( "ubsan-unique-traps"  , llvm::cl::Optional  , llvm::cl::desc("Deoptimize traps for UBSAN so there is 1 trap per check.")    )

static

ClSanitizeGuardChecks()

static llvm::cl::opt< bool > ClSanitizeGuardChecks ( "ubsan-guard-checks"  , llvm::cl::Optional  , llvm::cl::desc("Guard UBSAN checks with `llvm.allow.ubsan.check()`.")    )

static

createReferenceTemporary()

static RawAddress createReferenceTemporary ( CodeGenFunction &  CGF, const MaterializeTemporaryExpr *  M, const Expr *  Inner, RawAddress *  Alloca = nullptr  )

static

Definition at line 419 of file CGExpr.cpp.

References clang::C, clang::CodeGen::CodeGenFunction::CGM, clang::CodeGen::CodeGenFunction::CreateMemTemp(), clang::Default, clang::CodeGen::CodeGenModule::GetAddrOfGlobalTemporary(), clang::CharUnits::getAsAlign(), clang::CodeGen::CodeGenModule::getCodeGenOpts(), clang::CodeGen::CodeGenFunction::getContext(), clang::CodeGen::CodeGenModule::GetGlobalConstantAddressSpace(), clang::CodeGen::CodeGenModule::getModule(), clang::MaterializeTemporaryExpr::getStorageDuration(), clang::ASTContext::getTargetAddressSpace(), clang::CodeGen::CodeGenFunction::getTargetHooks(), clang::ASTContext::getTypeAlignInChars(), clang::Init, clang::Type::isArrayType(), clang::QualType::isConstantStorage(), clang::Type::isRecordType(), clang::SD_Automatic, clang::SD_Dynamic, clang::SD_FullExpression, clang::SD_Static, and clang::SD_Thread.

emitAddrOfFieldStorage()

static Address emitAddrOfFieldStorage ( CodeGenFunction &  CGF, Address  base, const FieldDecl *  field  )

static

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 4799 of file CGExpr.cpp.

References clang::CodeGen::CodeGenFunction::Builder, clang::CodeGen::CodeGenFunction::CGM, clang::CodeGen::CGBuilderTy::CreateStructGEP(), emitAddrOfZeroSizeField(), clang::CodeGen::CodeGenTypes::getCGRecordLayout(), clang::CodeGen::CodeGenFunction::getContext(), clang::CodeGen::CGRecordLayout::getLLVMFieldNo(), clang::NamedDecl::getName(), clang::FieldDecl::getParent(), clang::CodeGen::CodeGenModule::getTypes(), and clang::CodeGen::isEmptyFieldForLayout().

emitAddrOfZeroSizeField()

static Address emitAddrOfZeroSizeField ( CodeGenFunction &  CGF, Address  Base, const FieldDecl *  Field  )

static

Get the address of a zero-sized field within a record.

The resulting address doesn't necessarily have the right type.

Definition at line 4785 of file CGExpr.cpp.

References clang::CodeGen::CodeGenFunction::Builder, clang::CodeGen::CGBuilderTy::CreateConstInBoundsByteGEP(), clang::CodeGen::CodeGenFunction::getContext(), clang::ASTContext::getFieldOffset(), clang::CodeGen::CodeGenTypeCache::Int8Ty, and clang::ASTContext::toCharUnitsFromBits().

Referenced by emitAddrOfFieldStorage().

emitArraySubscriptGEP() [1/3]

static Address emitArraySubscriptGEP ( CodeGenFunction &  CGF, Address  addr, ArrayRef< llvm::Value * >  indices, llvm::Type *  elementType, bool  inbounds, bool  signedIndices, SourceLocation  loc, CharUnits  align, const llvm::Twine &  name = "arrayidx"  )

static

Definition at line 3992 of file CGExpr.cpp.

References clang::CodeGen::CodeGenFunction::Builder, clang::CodeGen::CGBuilderTy::CreateGEP(), clang::CodeGen::CodeGenFunction::EmitCheckedInBoundsGEP(), and clang::CodeGen::CodeGenFunction::NotSubtraction.

emitArraySubscriptGEP() [2/3]

static Address emitArraySubscriptGEP ( CodeGenFunction &  CGF, Address  addr, ArrayRef< llvm::Value * >  indices, QualType  eltType, bool  inbounds, bool  signedIndices, SourceLocation  loc, QualType *  arrayType = nullptr, const Expr *  Base = nullptr, const llvm::Twine &  name = "arrayidx"  )

static

Definition at line 4094 of file CGExpr.cpp.

References clang::ast_matchers::arrayType, clang::CodeGen::CodeGenFunction::Builder, clang::CodeGen::CodeGenFunction::ConvertTypeForMem(), emitArraySubscriptGEP(), clang::CodeGen::Address::emitRawPointer(), clang::CodeGen::Address::getAlignment(), getArrayElementAlign(), clang::ASTContext::getAsVariableArrayType(), clang::CodeGen::CodeGenFunction::getContext(), clang::CodeGen::CodeGenFunction::getDebugInfo(), clang::CodeGen::Address::getElementType(), getFixedSizeElementType(), clang::CodeGen::CGDebugInfo::getOrCreateStandaloneType(), clang::ASTContext::getTypeSizeInChars(), hasBPFPreserveStaticOffset(), clang::CodeGen::CodeGenFunction::IsInPreservedAIRegion, IsPreserveAIArrayBase(), and wrapWithBPFPreserveStaticOffset().

emitArraySubscriptGEP() [3/3]

static llvm::Value * emitArraySubscriptGEP ( CodeGenFunction &  CGF, llvm::Type *  elemType, llvm::Value *  ptr, ArrayRef< llvm::Value * >  indices, bool  inbounds, bool  signedIndices, SourceLocation  loc, const llvm::Twine &  name = "arrayidx"  )

static

Definition at line 3975 of file CGExpr.cpp.

References clang::CodeGen::CodeGenFunction::Builder, clang::CodeGen::CGBuilderTy::CreateGEP(), clang::CodeGen::CodeGenFunction::EmitCheckedInBoundsGEP(), and clang::CodeGen::CodeGenFunction::NotSubtraction.

Referenced by emitArraySubscriptGEP().

EmitCapturedFieldLValue()

static LValue EmitCapturedFieldLValue ( CodeGenFunction &  CGF, const FieldDecl *  FD, llvm::Value *  ThisValue  )

static

Definition at line 2900 of file CGExpr.cpp.

References clang::CodeGen::CodeGenFunction::EmitLValueForLambdaField().

emitCheckHandlerCall()

static void emitCheckHandlerCall ( CodeGenFunction &  CGF, llvm::FunctionType *  FnType, ArrayRef< llvm::Value * >  FnArgs, SanitizerHandler  CheckHandler, CheckRecoverableKind  RecoverKind, bool  IsFatal, llvm::BasicBlock *  ContBB  )

static

Definition at line 3509 of file CGExpr.cpp.

References clang::CodeGen::CodeGenFunction::Builder, clang::CodeGen::CodeGenFunction::CGM, clang::CodeGen::CodeGenModule::CreateRuntimeFunction(), clang::CodeGen::CodeGenFunction::EmitNounwindRuntimeCall(), clang::CodeGen::CodeGenModule::getCodeGenOpts(), clang::CodeGen::CodeGenFunction::getLLVMContext(), and SanitizerHandlers.

emitDeclTargetVarDeclLValue()

static Address emitDeclTargetVarDeclLValue ( CodeGenFunction &  CGF, const VarDecl *  VD, QualType  T  )

static

Definition at line 2780 of file CGExpr.cpp.

References clang::Type::castAs(), clang::CodeGen::CodeGenFunction::CGM, clang::CodeGen::CodeGenFunction::EmitLoadOfPointer(), clang::CodeGen::CGOpenMPRuntime::getAddrOfDeclareTargetVar(), clang::CodeGen::CodeGenFunction::getContext(), clang::CodeGen::CodeGenModule::getOpenMPRuntime(), clang::ASTContext::getPointerType(), clang::ValueDecl::getType(), clang::CodeGen::CGOpenMPRuntime::hasRequiresUnifiedSharedMemory(), and clang::CodeGen::Address::invalid().

Referenced by EmitGlobalVarDeclLValue().

EmitDirectCallee()

static CGCallee EmitDirectCallee ( CodeGenFunction &  CGF, GlobalDecl  GD  )

static

Definition at line 5531 of file CGExpr.cpp.

References clang::ASTContext::BuiltinInfo, clang::CodeGen::CodeGenFunction::CGM, clang::CodeGen::CodeGenFunction::CurFn, clang::CodeGen::CGCallee::forBuiltin(), clang::CodeGen::CGCallee::forDirect(), clang::FunctionDecl::getBuiltinID(), clang::CodeGen::CodeGenFunction::getContext(), clang::CodeGen::CodeGenModule::getCUDARuntime(), clang::GlobalDecl::getDecl(), clang::CodeGen::CGCUDARuntime::getKernelStub(), clang::CodeGen::CodeGenModule::getLangOpts(), clang::CodeGen::CodeGenModule::getMangledName(), clang::NamedDecl::getName(), clang::CodeGen::CodeGenModule::getRawFunctionPointer(), clang::Decl::hasAttr(), clang::Builtin::Context::isPredefinedLibFunction(), and OnlyHasInlineBuiltinDeclaration().

EmitFunctionDeclLValue()

static LValue EmitFunctionDeclLValue ( CodeGenFunction &  CGF, const Expr *  E, GlobalDecl  GD  )

static

Definition at line 2891 of file CGExpr.cpp.

References clang::CodeGen::CodeGenFunction::CGM, clang::CodeGen::Decl, E, clang::CodeGen::CodeGenFunction::getContext(), clang::GlobalDecl::getDecl(), clang::ASTContext::getDeclAlign(), clang::CodeGen::CodeGenModule::getFunctionPointer(), clang::Expr::getType(), clang::CodeGen::CodeGenFunction::MakeAddrLValue(), and V.

EmitGlobalNamedRegister()

static LValue EmitGlobalNamedRegister ( const VarDecl *  VD, CodeGenModule &  CGM  )

static

Named Registers are named metadata pointing to the register name which will be read from/written to as an argument to the intrinsic @llvm.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 2912 of file CGExpr.cpp.

References clang::Asm, clang::Decl::getAttr(), clang::CodeGen::CodeGenModule::getContext(), clang::ASTContext::getDeclAlign(), clang::CodeGen::CodeGenModule::getLLVMContext(), clang::CodeGen::CodeGenModule::getModule(), clang::ValueDecl::getType(), and clang::CodeGen::LValue::MakeGlobalReg().

EmitGlobalVarDeclLValue()

static LValue EmitGlobalVarDeclLValue ( CodeGenFunction &  CGF, const Expr *  E, const VarDecl *  VD  )

static

Definition at line 2840 of file CGExpr.cpp.

References clang::CodeGen::CodeGenFunction::Builder, clang::CodeGen::CodeGenFunction::CGM, clang::CodeGen::CodeGenTypes::ConvertTypeForMem(), clang::CodeGen::Decl, E, emitDeclTargetVarDeclLValue(), clang::CodeGen::CodeGenFunction::EmitLoadOfReferenceLValue(), clang::CodeGen::CGCXXABI::EmitThreadLocalVarDeclLValue(), EmitThreadPrivateVarDeclLValue(), clang::CodeGen::CodeGenModule::GetAddrOfGlobalVar(), clang::CodeGen::CodeGenFunction::getContext(), clang::CodeGen::CodeGenModule::getCXXABI(), clang::ASTContext::getDeclAlign(), clang::Expr::getExprLoc(), clang::CodeGen::CodeGenFunction::getLangOpts(), clang::VarDecl::getTLSKind(), clang::ValueDecl::getType(), clang::Expr::getType(), clang::CodeGen::CodeGenFunction::getTypes(), clang::Decl::hasAttr(), clang::Type::isReferenceType(), clang::CodeGen::Address::isValid(), clang::CodeGen::CodeGenFunction::MakeAddrLValue(), setObjCGCLValueClass(), clang::T, clang::VarDecl::TLS_Dynamic, clang::VarDecl::TLS_None, clang::CodeGen::CGCXXABI::usesThreadWrapperFunction(), and V.

emitHashMix()

static llvm::Value * emitHashMix ( CGBuilderTy &  Builder, llvm::Value *  Acc, llvm::Value *  Ptr  )

static

Definition at line 672 of file CGExpr.cpp.

EmitLoadOfMatrixLValue()

static RValue EmitLoadOfMatrixLValue ( LValue  LV, SourceLocation  Loc, CodeGenFunction &  CGF  )

static

Definition at line 2167 of file CGExpr.cpp.

References clang::CodeGen::CodeGenFunction::EmitLoadOfScalar(), clang::CodeGen::RValue::get(), clang::CodeGen::LValue::getAddress(), clang::CodeGen::LValue::getType(), clang::Type::isConstantMatrixType(), Loc, MaybeConvertMatrixAddress(), and clang::CodeGen::LValue::setAddress().

EmitLValueOrThrowExpression()

static std::optional< LValue > EmitLValueOrThrowExpression ( CodeGenFunction &  CGF, const Expr *  Operand  )

static

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 5077 of file CGExpr.cpp.

References clang::CodeGen::CodeGenFunction::EmitCXXThrowExpr(), and clang::CodeGen::CodeGenFunction::EmitLValue().

emitOMPArraySectionBase()

static Address emitOMPArraySectionBase ( CodeGenFunction &  CGF, const Expr *  Base, LValueBaseInfo &  BaseInfo, TBAAAccessInfo &  TBAAInfo, QualType  BaseTy, QualType  ElTy, bool  IsLowerBound  )

static

Definition at line 4412 of file CGExpr.cpp.

References clang::CodeGen::CodeGenFunction::Builder, clang::CodeGen::CodeGenFunction::CGM, clang::CodeGen::CodeGenFunction::ConvertType(), clang::CodeGen::CodeGenFunction::ConvertTypeForMem(), clang::CodeGen::CGBuilderTy::CreateConstArrayGEP(), clang::CodeGen::CGBuilderTy::CreateLoad(), clang::CodeGen::CodeGenFunction::EmitArraySectionExpr(), clang::CodeGen::CodeGenFunction::EmitPointerWithAlignment(), clang::CodeGen::LValue::getAddress(), clang::CodeGen::LValue::getBaseInfo(), clang::CodeGen::Address::getElementType(), clang::CodeGen::CodeGenModule::getNaturalTypeAlignment(), clang::Type::isArrayType(), clang::Type::isVariableArrayType(), clang::CodeGen::LValueBaseInfo::mergeForCast(), clang::CodeGen::CodeGenModule::mergeTBAAInfoForCast(), and clang::CodeGen::Address::withElementType().

EmitPointerWithAlignment()

static Address EmitPointerWithAlignment ( const Expr *  E, LValueBaseInfo *  BaseInfo, TBAAAccessInfo *  TBAAInfo, KnownNonNull_t  IsKnownNonNull, CodeGenFunction &  CGF  )

static

Definition at line 1258 of file CGExpr.cpp.

References clang::CodeGen::CodeGenFunction::authPointerToPointerCast(), clang::CodeGen::CodeGenFunction::Builder, clang::Call, clang::CodeGen::CodeGenFunction::CFITCK_UnrelatedCast, clang::CodeGen::CodeGenFunction::CGM, clang::CodeGen::CodeGenFunction::ConvertType(), clang::CodeGen::CodeGenFunction::ConvertTypeForMem(), clang::CodeGen::CGBuilderTy::CreateAddrSpaceCast(), clang::CodeGen::Decl, E, clang::CodeGen::CodeGenFunction::EmitArrayToPointerDecay(), clang::CodeGen::CodeGenModule::EmitExplicitCastExprType(), clang::CodeGen::CodeGenFunction::EmitLValue(), clang::CodeGen::CodeGenFunction::EmitPointerWithAlignment(), clang::CodeGen::CodeGenFunction::EmitScalarExpr(), clang::CodeGen::CodeGenFunction::EmitVTablePtrCheckForCast(), clang::CodeGen::LValue::getAddress(), clang::CodeGen::CodeGenFunction::GetAddressOfBaseClass(), clang::CodeGen::LValueBaseInfo::getAlignmentSource(), clang::Type::getAs(), clang::CodeGen::LValue::getBaseInfo(), clang::CodeGen::CodeGenModule::getNaturalPointeeTypeAlignment(), clang::Type::getPointeeType(), clang::CodeGen::CodeGenModule::getTBAAAccessInfo(), clang::CodeGen::LValue::getTBAAInfo(), clang::Expr::getType(), clang::CodeGen::Address::getType(), clang::SanitizerSet::has(), clang::Expr::IgnoreParens(), clang::Type::isObjCObjectPointerType(), clang::Type::isPointerType(), clang::CodeGen::CodeGenFunction::makeNaturalAddressForPointer(), clang::CodeGen::LValueBaseInfo::mergeForCast(), clang::CodeGen::CodeGenModule::mergeTBAAInfoForCast(), clang::CodeGen::CodeGenFunction::SanOpts, clang::CodeGen::Address::setAlignment(), clang::CodeGen::CodeGenFunction::ShouldNullCheckClassCastValue(), and clang::CodeGen::Address::withElementType().

emitPreserveStructAccess()

static Address emitPreserveStructAccess ( CodeGenFunction &  CGF, LValue  base, Address  addr, const FieldDecl *  field  )

static

Definition at line 4812 of file CGExpr.cpp.

References clang::CodeGen::CodeGenFunction::Builder, clang::CodeGen::CodeGenFunction::CGM, clang::CodeGen::CGBuilderTy::CreatePreserveStructAccessIndex(), clang::CodeGen::CodeGenTypes::getCGRecordLayout(), clang::CodeGen::CodeGenFunction::getDebugInfo(), clang::CodeGen::CodeGenFunction::getDebugInfoFIndex(), clang::FieldDecl::getFieldIndex(), clang::CodeGen::CGRecordLayout::getLLVMFieldNo(), clang::Decl::getLocation(), clang::CodeGen::CGDebugInfo::getOrCreateStandaloneType(), clang::FieldDecl::getParent(), clang::CodeGen::LValue::getType(), and clang::CodeGen::CodeGenModule::getTypes().

emitPseudoObjectExpr()

static LValueOrRValue emitPseudoObjectExpr ( CodeGenFunction &  CGF, const PseudoObjectExpr *  E, bool  forLValue, AggValueSlot  slot  )

static

Definition at line 6185 of file CGExpr.cpp.

References clang::CodeGen::AggValueSlot::asRValue(), clang::CodeGen::Decl, E, clang::CodeGen::CodeGenFunction::EmitAggExpr(), clang::CodeGen::CodeGenFunction::EmitAnyExpr(), clang::CodeGen::CodeGenFunction::EmitIgnoredExpr(), clang::CodeGen::CodeGenFunction::EmitLValue(), clang::CodeGen::AggValueSlot::getAddress(), clang::CodeGen::Address::getType(), clang::CodeGen::CodeGenFunction::hasAggregateEvaluationKind(), clang::Expr::isPRValue(), and clang::CodeGen::CodeGenFunction::MakeAddrLValue().

EmitStoreOfMatrixScalar()

static void EmitStoreOfMatrixScalar ( llvm::Value *  value, LValue  lvalue, bool  isInit, CodeGenFunction &  CGF  )

static

Definition at line 2095 of file CGExpr.cpp.

References clang::CodeGen::CodeGenFunction::EmitStoreOfScalar(), clang::CodeGen::LValue::getAddress(), clang::CodeGen::LValue::getBaseInfo(), clang::CodeGen::LValue::getTBAAInfo(), clang::CodeGen::LValue::getType(), clang::CodeGen::LValue::isNontemporal(), clang::CodeGen::LValue::isVolatile(), and MaybeConvertMatrixAddress().

EmitThreadPrivateVarDeclLValue()

static LValue EmitThreadPrivateVarDeclLValue ( CodeGenFunction &  CGF, const VarDecl *  VD, QualType  T, Address  Addr, llvm::Type *  RealVarTy, SourceLocation  Loc  )

static

Definition at line 2766 of file CGExpr.cpp.

References clang::CodeGen::CodeGenFunction::CGM, clang::CodeGen::Decl, clang::CodeGen::CGOpenMPRuntime::getAddrOfThreadPrivate(), clang::CodeGen::CodeGenFunction::OMPBuilderCBHelpers::getAddrOfThreadPrivate(), clang::CodeGen::CodeGenModule::getLangOpts(), clang::CodeGen::CodeGenModule::getOpenMPRuntime(), Loc, clang::CodeGen::CodeGenFunction::MakeAddrLValue(), clang::T, and clang::CodeGen::Address::withElementType().

Referenced by EmitGlobalVarDeclLValue().

getArrayElementAlign()

static CharUnits getArrayElementAlign ( CharUnits  arrayAlign, llvm::Value *  idx, CharUnits  eltSize  )

static

Definition at line 4007 of file CGExpr.cpp.

References clang::CharUnits::alignmentAtOffset(), and clang::CharUnits::alignmentOfArrayElement().

Referenced by emitArraySubscriptGEP().

getArrayIndexingBound()

static llvm::Value * getArrayIndexingBound ( CodeGenFunction &  CGF, const Expr *  Base, QualType &  IndexedType, LangOptions::StrictFlexArraysLevelKind  StrictFlexArraysLevel  )

static

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 942 of file CGExpr.cpp.

References clang::CodeGen::CodeGenFunction::Builder, clang::Type::castAsArrayTypeUnsafe(), clang::CodeGen::CodeGenFunction::getContext(), clang::CodeGen::CodeGenFunction::getVLASize(), clang::CodeGen::CodeGenFunction::LoadPassedObjectSize(), and clang::CodeGen::CodeGenFunction::VlaSizePair::NumElts.

getConstantExprReferredType()

static QualType getConstantExprReferredType ( const FullExpr *  E, const ASTContext &  Ctx  )

static

Definition at line 1514 of file CGExpr.cpp.

References E, clang::Type::getPointeeType(), clang::Expr::getType(), and clang::Expr::IgnoreImplicit().

getFieldOffsetInBits()

static bool getFieldOffsetInBits ( CodeGenFunction &  CGF, const RecordDecl *  RD, const FieldDecl *  Field, int64_t &  Offset  )

static

The offset of a field from the beginning of the record.

Definition at line 4145 of file CGExpr.cpp.

References clang::RecordDecl::fields(), clang::Type::getAsRecordDecl(), clang::ASTContext::getASTRecordLayout(), clang::CodeGen::CodeGenFunction::getContext(), clang::ASTRecordLayout::getFieldOffset(), getFieldOffsetInBits(), clang::Type::isRecordType(), and clang::TagDecl::isUnion().

Referenced by getFieldOffsetInBits(), and getOffsetDifferenceInBits().

getFixedSizeElementType()

static QualType getFixedSizeElementType ( const ASTContext &  ctx, const VariableArrayType *  vla  )

static

Definition at line 4022 of file CGExpr.cpp.

References clang::ASTContext::getAsVariableArrayType(), and clang::ArrayType::getElementType().

Referenced by emitArraySubscriptGEP().

getGEPIndicesToField()

static bool getGEPIndicesToField ( CodeGenFunction &  CGF, const RecordDecl *  RD, const FieldDecl *  Field, RecIndicesTy &  Indices  )

static

Definition at line 1090 of file CGExpr.cpp.

References clang::CodeGen::CodeGenFunction::Builder, clang::CodeGen::CodeGenFunction::CGM, clang::CodeGen::CGRecordLayout::containsFieldDecl(), clang::RecordDecl::fields(), clang::Type::getAsRecordDecl(), clang::CodeGen::CodeGenTypes::getCGRecordLayout(), getGEPIndicesToField(), clang::CodeGen::CGRecordLayout::getLLVMFieldNo(), clang::CodeGen::CodeGenModule::getTypes(), clang::Type::isRecordType(), and clang::TagDecl::isUnion().

Referenced by getGEPIndicesToField().

getOffsetDifferenceInBits()

static std::optional< int64_t > getOffsetDifferenceInBits ( CodeGenFunction &  CGF, const FieldDecl *  FD1, const FieldDecl *  FD2  )

static

Returns the relative offset difference between FD1 and FD2.

offsetof(struct foo, FD1) - offsetof(struct foo, FD2)

Both fields must be within the same struct.

Definition at line 4176 of file CGExpr.cpp.

References getFieldOffsetInBits(), clang::DeclContext::getOuterLexicalRecordContext(), and clang::FieldDecl::getParent().

getRangeForType()

static bool getRangeForType ( CodeGenFunction &  CGF, QualType  Ty, llvm::APInt &  Min, llvm::APInt &  End, bool  StrictEnums, bool  IsBool  )

static

Definition at line 1864 of file CGExpr.cpp.

References clang::Type::getAs(), clang::CodeGen::CodeGenFunction::getContext(), clang::EnumType::getDecl(), clang::CodeGen::CodeGenFunction::getLangOpts(), clang::ASTContext::getTypeSize(), clang::EnumDecl::getValueRange(), clang::EnumDecl::isFixed(), and clang::Min.

getRecoverableKind()

static CheckRecoverableKind getRecoverableKind ( SanitizerMask  Kind )

static

Definition at line 3486 of file CGExpr.cpp.

hasAnyVptr()

static bool hasAnyVptr ( const QualType  Type, const ASTContext &  Context  )

static

Definition at line 4825 of file CGExpr.cpp.

References clang::RecordDecl::fields(), clang::Type::getAsCXXRecordDecl(), and hasAnyVptr().

Referenced by hasAnyVptr().

hasBooleanRepresentation()

static bool hasBooleanRepresentation ( QualType  Ty )

static

Definition at line 1851 of file CGExpr.cpp.

References clang::Type::getAs(), hasBooleanRepresentation(), and clang::Type::isBooleanType().

Referenced by hasBooleanRepresentation().

hasBPFPreserveStaticOffset() [1/2]

static bool hasBPFPreserveStaticOffset ( const Expr *  E )

static

Definition at line 4035 of file CGExpr.cpp.

References E, clang::Type::getAsRecordDecl(), clang::Type::getPointeeType(), clang::Expr::getType(), hasBPFPreserveStaticOffset(), and clang::QualType::isNull().

hasBPFPreserveStaticOffset() [2/2]

static bool hasBPFPreserveStaticOffset ( const RecordDecl *  D )

static

Definition at line 4031 of file CGExpr.cpp.

References D, and clang::Decl::hasAttr().

Referenced by emitArraySubscriptGEP(), and hasBPFPreserveStaticOffset().

isAAPCS()

static bool isAAPCS ( const TargetInfo &  TargetInfo )

static

Helper method to check if the underlying ABI is AAPCS.

Definition at line 466 of file CGExpr.cpp.

References clang::TargetInfo::getABI().

isConstantEmittableObjectType()

static bool isConstantEmittableObjectType ( QualType  type )

static

Given an object of the given canonical type, can we safely copy a value out of it based on its initializer?

Definition at line 1680 of file CGExpr.cpp.

References clang::Qualifiers::hasConst(), clang::Qualifiers::hasVolatile(), and clang::ast_matchers::type.

Referenced by checkVarTypeForConstantEmission().

IsPreserveAIArrayBase()

static bool IsPreserveAIArrayBase ( CodeGenFunction &  CGF, const Expr *  ArrayBase  )

static

Given an array base, check whether its member access belongs to a record with preserve_access_index attribute or not.

Definition at line 4060 of file CGExpr.cpp.

References E, clang::CodeGen::CodeGenFunction::getDebugInfo(), clang::MemberExpr::getMemberDecl(), clang::PointerType::getPointeeType(), clang::Type::getUnqualifiedDesugaredType(), clang::Decl::hasAttr(), clang::Type::hasAttr(), and clang::Expr::IgnoreImpCasts().

Referenced by emitArraySubscriptGEP().

isSimpleArrayDecayOperand()

static const Expr * isSimpleArrayDecayOperand ( const Expr *  E )

static

isSimpleArrayDecayOperand - If the specified expr is a simple decay from an array to pointer, return the array subexpression.

Definition at line 3961 of file CGExpr.cpp.

References E, clang::FullExpr::getSubExpr(), clang::Expr::getType(), and clang::Type::isVariableArrayType().

MaybeConvertMatrixAddress()

static RawAddress MaybeConvertMatrixAddress ( RawAddress  Addr, CodeGenFunction &  CGF, bool  IsVector = true  )

static

Definition at line 2070 of file CGExpr.cpp.

References clang::CodeGen::RawAddress::getElementType(), and clang::CodeGen::RawAddress::withElementType().

Referenced by EmitLoadOfMatrixLValue(), and EmitStoreOfMatrixScalar().

OnlyHasInlineBuiltinDeclaration()

static bool OnlyHasInlineBuiltinDeclaration ( const FunctionDecl *  FD )

static

Definition at line 5524 of file CGExpr.cpp.

References clang::Redeclarable< decl_type >::getPreviousDecl().

Referenced by EmitDirectCallee().

pushTemporaryCleanup()

static void pushTemporaryCleanup ( CodeGenFunction &  CGF, const MaterializeTemporaryExpr *  M, const Expr *  E, Address  ReferenceTemporary  )

static

Definition at line 303 of file CGExpr.cpp.

References clang::CodeGen::CodeGenFunction::CGM, clang::CodeGen::CodeGenFunction::destroyARCStrongImprecise, clang::CodeGen::CodeGenFunction::destroyARCStrongPrecise, clang::CodeGen::CodeGenFunction::destroyARCWeak, clang::CodeGen::CodeGenFunction::destroyCXXObject, clang::Dtor_Complete, E, clang::CodeGen::EHCleanup, clang::CodeGen::Address::emitRawPointer(), clang::CodeGen::CodeGenFunction::generateDestroyHelper(), clang::CodeGen::CodeGenModule::getAddrAndTypeOfCXXStructor(), 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::MaterializeTemporaryExpr::getStorageDuration(), clang::Expr::getType(), clang::Decl::hasAttr(), 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.

setObjCGCLValueClass()

static void setObjCGCLValueClass ( const ASTContext &  Ctx, const Expr *  E, LValue &  LV, bool  IsMemberAccess = false  )

static

Definition at line 2669 of file CGExpr.cpp.

References clang::Type::castAs(), E, clang::ASTContext::getLangOpts(), 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::LangOptionsBase::NonGC, clang::CodeGen::LValue::setBaseIvarExp(), clang::CodeGen::LValue::setGlobalObjCRef(), clang::CodeGen::LValue::setObjCArray(), setObjCGCLValueClass(), clang::CodeGen::LValue::setObjCIvar(), clang::CodeGen::LValue::setThreadLocalRef(), and clang::VarDecl::TLS_None.

Referenced by EmitGlobalVarDeclLValue(), and setObjCGCLValueClass().

tryToConvertMemberExprToDeclRefExpr()

static DeclRefExpr * tryToConvertMemberExprToDeclRefExpr ( CodeGenFunction &  CGF, const MemberExpr *  ME  )

static

Definition at line 1815 of file CGExpr.cpp.

References clang::DeclRefExpr::Create(), clang::CodeGen::CodeGenFunction::getContext(), clang::MemberExpr::getExprLoc(), clang::MemberExpr::getMemberDecl(), clang::Expr::getType(), clang::Expr::getValueKind(), and clang::MemberExpr::isNonOdrUse().

wrapWithBPFPreserveStaticOffset()

static Address wrapWithBPFPreserveStaticOffset ( CodeGenFunction &  CGF, Address &  Addr  )

static

Definition at line 4047 of file CGExpr.cpp.

References clang::CodeGen::CodeGenFunction::Builder, clang::Call, clang::CodeGen::CodeGenFunction::CGM, clang::CodeGen::Address::emitRawPointer(), clang::CodeGen::Address::getAlignment(), clang::CodeGen::Address::getElementType(), clang::CodeGen::CodeGenModule::getIntrinsic(), clang::CodeGen::CodeGenFunction::getTarget(), and clang::TargetInfo::getTriple().

Referenced by emitArraySubscriptGEP().

Variable Documentation

SanitizerHandlers

const SanitizerHandlerInfo SanitizerHandlers[]

Initial value:

= {
#define SANITIZER_CHECK(Enum, Name, Version)                  
    LIST_SANITIZER_CHECKS
 
}

Definition at line 3503 of file CGExpr.cpp.

Referenced by emitCheckHandlerCall().