CGExprCXX.cpp File Reference

#include "CGCUDARuntime.h"
#include "CGCXXABI.h"
#include "CGDebugInfo.h"
#include "CGObjCRuntime.h"
#include "CodeGenFunction.h"
#include "ConstantEmitter.h"
#include "TargetInfo.h"
#include "clang/Basic/CodeGenOptions.h"
#include "clang/CodeGen/CGFunctionInfo.h"
#include "llvm/IR/Intrinsics.h"

Go to the source code of this file.

Functions
static MemberCallInfo	commonEmitCXXMemberOrOperatorCall (CodeGenFunction &CGF, GlobalDecl GD, llvm::Value *This, llvm::Value *ImplicitParam, QualType ImplicitParamTy, const CallExpr *CE, CallArgList &Args, CallArgList *RtlArgs)
static CXXRecordDecl *	getCXXRecord (const Expr *E)
static void	EmitNullBaseClassInitialization (CodeGenFunction &CGF, Address DestPtr, const CXXRecordDecl *Base)
static CharUnits	CalculateCookiePadding (CodeGenFunction &CGF, const CXXNewExpr *E)
static llvm::Value *	EmitCXXNewAllocSize (CodeGenFunction &CGF, const CXXNewExpr *e, unsigned minElements, llvm::Value *&numElements, llvm::Value *&sizeWithoutCookie)
static void	StoreAnyExprIntoOneUnit (CodeGenFunction &CGF, const Expr *Init, QualType AllocType, Address NewPtr, AggValueSlot::Overlap_t MayOverlap)
static void	EmitNewInitializer (CodeGenFunction &CGF, const CXXNewExpr *E, QualType ElementType, llvm::Type *ElementTy, Address NewPtr, llvm::Value *NumElements, llvm::Value *AllocSizeWithoutCookie)
static RValue	EmitNewDeleteCall (CodeGenFunction &CGF, const FunctionDecl *CalleeDecl, const FunctionProtoType *CalleeType, const CallArgList &Args)
	Emit a call to an operator new or operator delete function, as implicitly created by new-expressions and delete-expressions.
static UsualDeleteParams	getUsualDeleteParams (const FunctionDecl *FD)
static void	EnterNewDeleteCleanup (CodeGenFunction &CGF, const CXXNewExpr *E, Address NewPtr, llvm::Value *AllocSize, CharUnits AllocAlign, const CallArgList &NewArgs)
	Enter a cleanup to call 'operator delete' if the initializer in a new-expression throws.
static void	EmitDestroyingObjectDelete (CodeGenFunction &CGF, const CXXDeleteExpr *DE, Address Ptr, QualType ElementType)
	Emit the code for deleting a single object with a destroying operator delete.
static bool	EmitObjectDelete (CodeGenFunction &CGF, const CXXDeleteExpr *DE, Address Ptr, QualType ElementType, llvm::BasicBlock *UnconditionalDeleteBlock)
	Emit the code for deleting a single object.
static void	EmitArrayDelete (CodeGenFunction &CGF, const CXXDeleteExpr *E, Address deletedPtr, QualType elementType)
	Emit the code for deleting an array of objects.
static llvm::Value *	EmitTypeidFromVTable (CodeGenFunction &CGF, const Expr *E, llvm::Type *StdTypeInfoPtrTy, bool HasNullCheck)
static llvm::Value *	EmitDynamicCastToNull (CodeGenFunction &CGF, QualType DestTy)

Function Documentation

CalculateCookiePadding()

static CharUnits CalculateCookiePadding ( CodeGenFunction &  CGF, const CXXNewExpr *  E  )

static

Definition at line 698 of file CGExprCXX.cpp.

References clang::CodeGen::CodeGenFunction::CGM, E, clang::CodeGen::CGCXXABI::GetArrayCookieSize(), clang::CodeGen::CodeGenModule::getCXXABI(), and clang::CharUnits::Zero().

Referenced by EmitCXXNewAllocSize().

commonEmitCXXMemberOrOperatorCall()

static MemberCallInfo commonEmitCXXMemberOrOperatorCall ( CodeGenFunction &  CGF, GlobalDecl  GD, llvm::Value *  This, llvm::Value *  ImplicitParam, QualType  ImplicitParamTy, const CallExpr *  CE, CallArgList &  Args, CallArgList *  RtlArgs  )

static

Definition at line 36 of file CGExprCXX.cpp.

References clang::CodeGen::CallArgList::add(), clang::CodeGen::CallArgList::addFrom(), clang::CallExpr::arguments(), clang::Type::castAs(), clang::CodeGen::CodeGenFunction::CGM, clang::CodeGen::CodeGenTypes::DeriveThisType(), clang::CodeGen::CodeGenFunction::EmitCallArgs(), clang::CodeGen::RequiredArgs::forPrototypePlus(), clang::CodeGen::RValue::get(), clang::CodeGen::CodeGenModule::getCXXABI(), clang::GlobalDecl::getDecl(), clang::CallExpr::getDirectCallee(), clang::FunctionProtoType::getNumParams(), clang::CodeGen::CGCXXABI::getThisArgumentTypeForMethod(), and clang::CodeGen::CodeGenFunction::getTypes().

EmitArrayDelete()

static void EmitArrayDelete ( CodeGenFunction &  CGF, const CXXDeleteExpr *  E, Address  deletedPtr, QualType  elementType  )

static

Emit the code for deleting an array of objects.

Definition at line 2035 of file CGExprCXX.cpp.

References clang::CharUnits::alignmentOfArrayElement(), clang::CodeGen::CodeGenFunction::Builder, clang::CodeGen::CodeGenFunction::CGM, clang::CodeGen::CGBuilderTy::CreateInBoundsGEP(), E, clang::CodeGen::CodeGenFunction::EHStack, clang::CodeGen::CodeGenFunction::emitArrayDestroy(), clang::CodeGen::Address::emitRawPointer(), clang::CodeGen::Address::getAlignment(), clang::CodeGen::CodeGenFunction::getContext(), clang::CodeGen::CodeGenModule::getCXXABI(), clang::CodeGen::CodeGenFunction::getDestroyer(), clang::CodeGen::Address::getElementType(), clang::ASTContext::getTypeSizeInChars(), clang::QualType::isDestructedType(), clang::CodeGen::CodeGenFunction::needsEHCleanup(), clang::CodeGen::NormalAndEHCleanup, clang::CodeGen::CodeGenFunction::PopCleanupBlock(), and clang::CodeGen::CGCXXABI::ReadArrayCookie().

EmitCXXNewAllocSize()

static llvm::Value * EmitCXXNewAllocSize ( CodeGenFunction &  CGF, const CXXNewExpr *  e, unsigned  minElements, llvm::Value *&  numElements, llvm::Value *&  sizeWithoutCookie  )

static

Definition at line 711 of file CGExprCXX.cpp.

References clang::CodeGen::CodeGenFunction::Builder, CalculateCookiePadding(), clang::CodeGen::CodeGenFunction::CGM, clang::CodeGen::CodeGenFunction::EmitScalarExpr(), clang::CXXNewExpr::getAllocatedType(), clang::CXXNewExpr::getArraySize(), clang::ASTContext::getAsConstantArrayType(), clang::CodeGen::CodeGenFunction::getContext(), clang::CodeGen::CodeGenModule::getIntrinsic(), clang::CharUnits::getQuantity(), clang::Expr::getType(), clang::ASTContext::getTypeSizeInChars(), clang::CXXNewExpr::isArray(), clang::CharUnits::isOne(), clang::CodeGen::CodeGenTypeCache::SizeTy, clang::CodeGen::ConstantEmitter::tryEmitAbstract(), and clang::ast_matchers::type.

EmitDestroyingObjectDelete()

static void EmitDestroyingObjectDelete ( CodeGenFunction &  CGF, const CXXDeleteExpr *  DE, Address  Ptr, QualType  ElementType  )

static

Emit the code for deleting a single object with a destroying operator delete.

If the element type has a non-virtual destructor, Ptr has already been converted to the type of the parameter of 'operator delete'. Otherwise Ptr points to an object of the static type.

Definition at line 1900 of file CGExprCXX.cpp.

References clang::CodeGen::CodeGenFunction::CGM, clang::CodeGen::CodeGenFunction::EmitDeleteCall(), clang::CodeGen::Address::emitRawPointer(), clang::CodeGen::CGCXXABI::emitVirtualObjectDelete(), clang::Type::getAsCXXRecordDecl(), clang::CodeGen::CodeGenModule::getCXXABI(), clang::CXXRecordDecl::getDestructor(), and clang::CXXDeleteExpr::getOperatorDelete().

EmitDynamicCastToNull()

static llvm::Value * EmitDynamicCastToNull ( CodeGenFunction &  CGF, QualType  DestTy  )

static

C++ [expr.dynamic.cast]p9: A failed cast to reference type throws std::bad_cast

Definition at line 2215 of file CGExprCXX.cpp.

References clang::CodeGen::CodeGenFunction::Builder, clang::CodeGen::CodeGenFunction::CGM, clang::CodeGen::CodeGenFunction::ConvertType(), clang::CodeGen::CGCXXABI::EmitBadCastCall(), clang::CodeGen::CodeGenModule::getCXXABI(), and clang::Type::isPointerType().

EmitNewDeleteCall()

static RValue EmitNewDeleteCall ( CodeGenFunction &  CGF, const FunctionDecl *  CalleeDecl, const FunctionProtoType *  CalleeType, const CallArgList &  Args  )

static

Emit a call to an operator new or operator delete function, as implicitly created by new-expressions and delete-expressions.

C++1y [expr.new]p10: [In a new-expression,] an implementation is allowed to omit a call to a replaceable global allocation function.

We model such elidable calls with the 'builtin' attribute.

Definition at line 1337 of file CGExprCXX.cpp.

References clang::CodeGen::CodeGenTypes::arrangeFreeFunctionCall(), clang::CodeGen::CodeGenFunction::CGM, clang::CodeGen::CodeGenFunction::EmitCall(), clang::CodeGen::CGCallee::forDirect(), clang::CodeGen::CodeGenModule::GetAddrOfFunction(), clang::CodeGen::CodeGenModule::getTypes(), and clang::FunctionDecl::isReplaceableGlobalAllocationFunction().

EmitNewInitializer()

static void EmitNewInitializer ( CodeGenFunction &  CGF, const CXXNewExpr *  E, QualType  ElementType, llvm::Type *  ElementTy, Address  NewPtr, llvm::Value *  NumElements, llvm::Value *  AllocSizeWithoutCookie  )

static

Definition at line 1322 of file CGExprCXX.cpp.

References clang::CodeGen::AggValueSlot::DoesNotOverlap, E, clang::CodeGen::CodeGenFunction::EmitNewArrayInitializer(), clang::Init, and StoreAnyExprIntoOneUnit().

EmitNullBaseClassInitialization()

static void EmitNullBaseClassInitialization ( CodeGenFunction &  CGF, Address  DestPtr, const CXXRecordDecl *  Base  )

static

Definition at line 513 of file CGExprCXX.cpp.

References clang::CodeGen::CodeGenFunction::Builder, clang::CodeGen::CodeGenFunction::CGM, clang::CodeGen::CGBuilderTy::CreateConstInBoundsByteGEP(), clang::CodeGen::CGBuilderTy::CreateMemCpy(), clang::CodeGen::CGBuilderTy::CreateMemSet(), clang::CodeGen::CodeGenModule::EmitNullConstantForBase(), clang::CodeGen::Address::getAlignment(), clang::CharUnits::getAsAlign(), clang::ASTContext::getASTRecordLayout(), clang::CodeGen::CodeGenFunction::getContext(), clang::CodeGen::CodeGenModule::getCXXABI(), clang::CodeGen::CodeGenModule::getModule(), clang::ASTRecordLayout::getNonVirtualAlignment(), clang::ASTRecordLayout::getNonVirtualSize(), clang::CodeGen::CodeGenTypeCache::getPointerSize(), clang::CodeGen::CodeGenModule::getSize(), clang::CodeGen::CGCXXABI::getVBPtrOffsets(), clang::CodeGen::CodeGenTypeCache::Int8Ty, clang::CharUnits::isNegative(), clang::CharUnits::isZero(), clang::CodeGen::Address::withElementType(), and clang::CharUnits::Zero().

EmitObjectDelete()

static bool EmitObjectDelete ( CodeGenFunction &  CGF, const CXXDeleteExpr *  DE, Address  Ptr, QualType  ElementType, llvm::BasicBlock *  UnconditionalDeleteBlock  )

static

Emit the code for deleting a single object.

Returns

true if we started emitting UnconditionalDeleteBlock, false if not.

Definition at line 1915 of file CGExprCXX.cpp.

References clang::CodeGen::ARCPreciseLifetime, clang::CodeGen::CodeGenFunction::CGM, clang::declaresSameEntity(), clang::Dtor_Complete, clang::CodeGen::CodeGenFunction::EHStack, clang::CodeGen::CodeGenFunction::EmitARCDestroyStrong(), clang::CodeGen::CodeGenFunction::EmitARCDestroyWeak(), clang::CodeGen::CodeGenFunction::EmitBlock(), clang::CodeGen::CodeGenFunction::EmitCXXDestructorCall(), clang::CodeGen::Address::emitRawPointer(), clang::CodeGen::CodeGenFunction::EmitTypeCheck(), clang::CodeGen::CGCXXABI::emitVirtualObjectDelete(), clang::CXXDeleteExpr::getArgument(), clang::Type::getAs(), clang::CodeGen::CodeGenModule::getCodeGenOpts(), clang::CodeGen::CodeGenModule::getCXXABI(), getCXXRecord(), clang::CXXRecordDecl::getDestructor(), clang::CXXMethodDecl::getDevirtualizedMethod(), clang::Expr::getExprLoc(), clang::CodeGen::CodeGenModule::getLangOpts(), clang::QualType::getObjCLifetime(), clang::CXXDeleteExpr::getOperatorDelete(), clang::DeclContext::getParent(), clang::CXXRecordDecl::hasDefinition(), clang::CXXRecordDecl::hasTrivialDestructor(), clang::CXXMethodDecl::isVirtual(), 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::PopCleanupBlock(), and clang::CodeGen::CodeGenFunction::TCK_MemberCall.

EmitTypeidFromVTable()

static llvm::Value * EmitTypeidFromVTable ( CodeGenFunction &  CGF, const Expr *  E, llvm::Type *  StdTypeInfoPtrTy, bool  HasNullCheck  )

static

Definition at line 2143 of file CGExprCXX.cpp.

References clang::CodeGen::CodeGenFunction::Builder, clang::CodeGen::CodeGenFunction::CGM, clang::CodeGen::CodeGenFunction::createBasicBlock(), clang::CodeGen::CGBuilderTy::CreateIsNull(), E, clang::CodeGen::CGCXXABI::EmitBadTypeidCall(), clang::CodeGen::CodeGenFunction::EmitBlock(), clang::CodeGen::CodeGenFunction::EmitLValue(), clang::CodeGen::CodeGenFunction::EmitTypeCheck(), clang::CodeGen::CGCXXABI::EmitTypeid(), clang::CodeGen::LValue::getAddress(), clang::CodeGen::CodeGenModule::getCXXABI(), clang::Expr::getExprLoc(), clang::Expr::getType(), IsNull, clang::CodeGen::CGCXXABI::shouldTypeidBeNullChecked(), and clang::CodeGen::CodeGenFunction::TCK_DynamicOperation.

EnterNewDeleteCleanup()

static void EnterNewDeleteCleanup ( CodeGenFunction &  CGF, const CXXNewExpr *  E, Address  NewPtr, llvm::Value *  AllocSize, CharUnits  AllocAlign, const CallArgList &  NewArgs  )

static

Enter a cleanup to call 'operator delete' if the initializer in a new-expression throws.

Definition at line 1517 of file CGExprCXX.cpp.

References E, clang::CodeGen::EHCleanup, clang::CodeGen::CodeGenFunction::EHStack, clang::CodeGen::Address::emitRawPointer(), clang::CodeGen::RValue::get(), clang::CodeGen::CodeGenFunction::initFullExprCleanup(), clang::CodeGen::CodeGenFunction::isInConditionalBranch(), clang::CodeGen::EHScopeStack::pushCleanupWithExtra(), clang::CodeGen::InvariantValue< T >::save(), and V.

getCXXRecord()

static CXXRecordDecl * getCXXRecord ( const Expr *  E )

static

Definition at line 180 of file CGExprCXX.cpp.

References clang::Type::castAs(), E, clang::Type::getAs(), clang::RecordType::getDecl(), clang::Type::getPointeeType(), clang::Expr::getType(), and clang::T.

Referenced by EmitObjectDelete().

getUsualDeleteParams()

static UsualDeleteParams getUsualDeleteParams ( const FunctionDecl *  FD )

static

Definition at line 1389 of file CGExprCXX.cpp.

References clang::Type::castAs(), clang::ValueDecl::getType(), clang::Type::isAlignValT(), clang::FunctionDecl::isDestroyingOperatorDelete(), clang::Type::isIntegerType(), clang::FunctionProtoType::param_type_begin(), and clang::FunctionProtoType::param_type_end().

StoreAnyExprIntoOneUnit()

static void StoreAnyExprIntoOneUnit ( CodeGenFunction &  CGF, const Expr *  Init, QualType  AllocType, Address  NewPtr, AggValueSlot::Overlap_t  MayOverlap  )

static

Definition at line 973 of file CGExprCXX.cpp.

References clang::CodeGen::AggValueSlot::DoesNotNeedGCBarriers, clang::CodeGen::CodeGenFunction::EmitAggExpr(), clang::CodeGen::CodeGenFunction::EmitComplexExprIntoLValue(), clang::CodeGen::CodeGenFunction::EmitScalarInit(), clang::CodeGen::AggValueSlot::forAddr(), clang::CodeGen::CodeGenFunction::getEvaluationKind(), clang::QualType::getQualifiers(), clang::Init, clang::CodeGen::AggValueSlot::IsDestructed, clang::CodeGen::AggValueSlot::IsNotAliased, clang::CodeGen::AggValueSlot::IsNotZeroed, clang::CodeGen::AggValueSlot::IsSanitizerChecked, clang::CodeGen::CodeGenFunction::MakeAddrLValue(), clang::CodeGen::TEK_Aggregate, clang::CodeGen::TEK_Complex, and clang::CodeGen::TEK_Scalar.

Referenced by EmitNewInitializer().