CGCall.cpp File Reference

#include "CGCall.h"
#include "ABIInfo.h"
#include "ABIInfoImpl.h"
#include "CGBlocks.h"
#include "CGCXXABI.h"
#include "CGCleanup.h"
#include "CGRecordLayout.h"
#include "CodeGenFunction.h"
#include "CodeGenModule.h"
#include "TargetInfo.h"
#include "clang/AST/Attr.h"
#include "clang/AST/Decl.h"
#include "clang/AST/DeclCXX.h"
#include "clang/AST/DeclObjC.h"
#include "clang/Basic/CodeGenOptions.h"
#include "clang/Basic/TargetInfo.h"
#include "clang/CodeGen/CGFunctionInfo.h"
#include "clang/CodeGen/SwiftCallingConv.h"
#include "llvm/ADT/StringExtras.h"
#include "llvm/Analysis/ValueTracking.h"
#include "llvm/IR/Assumptions.h"
#include "llvm/IR/AttributeMask.h"
#include "llvm/IR/Attributes.h"
#include "llvm/IR/CallingConv.h"
#include "llvm/IR/DataLayout.h"
#include "llvm/IR/InlineAsm.h"
#include "llvm/IR/IntrinsicInst.h"
#include "llvm/IR/Intrinsics.h"
#include "llvm/IR/Type.h"
#include "llvm/Transforms/Utils/Local.h"
#include <optional>

Go to the source code of this file.

Namespaces
namespace	clang
namespace	clang::CodeGen

Functions
static CanQual< FunctionProtoType >	GetFormalType (const CXXMethodDecl *MD)
	Returns the canonical formal type of the given C++ method.
static CanQualType	GetReturnType (QualType RetTy)
	Returns the "extra-canonicalized" return type, which discards qualifiers on the return type.
static void	addExtParameterInfosForCall (llvm::SmallVectorImpl< FunctionProtoType::ExtParameterInfo > &paramInfos, const FunctionProtoType *proto, unsigned prefixArgs, unsigned totalArgs)
static void	appendParameterTypes (const CodeGenTypes &CGT, SmallVectorImpl< CanQualType > &prefix, SmallVectorImpl< FunctionProtoType::ExtParameterInfo > &paramInfos, CanQual< FunctionProtoType > FPT)
	Adds the formal parameters in FPT to the given prefix.
static const CGFunctionInfo &	arrangeLLVMFunctionInfo (CodeGenTypes &CGT, bool instanceMethod, SmallVectorImpl< CanQualType > &prefix, CanQual< FunctionProtoType > FTP)
	Arrange the LLVM function layout for a value of the given function type, on top of any implicit parameters already stored.
static CallingConv	getCallingConventionForDecl (const ObjCMethodDecl *D, bool IsWindows)
static void	setCUDAKernelCallingConvention (CanQualType &FTy, CodeGenModule &CGM, const FunctionDecl *FD)
	Set calling convention for CUDA/HIP kernel.
static SmallVector< CanQualType, 16 >	getArgTypesForCall (ASTContext &ctx, const CallArgList &args)
static SmallVector< CanQualType, 16 >	getArgTypesForDeclaration (ASTContext &ctx, const FunctionArgList &args)
static llvm::SmallVector< FunctionProtoType::ExtParameterInfo, 16 >	getExtParameterInfosForCall (const FunctionProtoType *proto, unsigned prefixArgs, unsigned totalArgs)
static const CGFunctionInfo &	arrangeFreeFunctionLikeCall (CodeGenTypes &CGT, CodeGenModule &CGM, const CallArgList &args, const FunctionType *fnType, unsigned numExtraRequiredArgs, bool chainCall)
	Arrange a call as unto a free function, except possibly with an additional number of formal parameters considered required.
void	clang::CodeGen::computeSPIRKernelABIInfo (CodeGenModule &CGM, CGFunctionInfo &FI)
static std::unique_ptr< TypeExpansion >	getTypeExpansion (QualType Ty, const ASTContext &Context)
static int	getExpansionSize (QualType Ty, const ASTContext &Context)
static void	forConstantArrayExpansion (CodeGenFunction &CGF, ConstantArrayExpansion *CAE, Address BaseAddr, llvm::function_ref< void(Address)> Fn)
static Address	CreateTempAllocaForCoercion (CodeGenFunction &CGF, llvm::Type *Ty, CharUnits MinAlign, const Twine &Name="tmp")
	Create a temporary allocation for the purposes of coercion.
static Address	EnterStructPointerForCoercedAccess (Address SrcPtr, llvm::StructType *SrcSTy, uint64_t DstSize, CodeGenFunction &CGF)
	EnterStructPointerForCoercedAccess - Given a struct pointer that we are accessing some number of bytes out of it, try to gep into the struct to get at its inner goodness.
static llvm::Value *	CoerceIntOrPtrToIntOrPtr (llvm::Value *Val, llvm::Type *Ty, CodeGenFunction &CGF)
	CoerceIntOrPtrToIntOrPtr - Convert a value Val to the specific Ty where both are either integers or pointers.
static llvm::Value *	CreateCoercedLoad (Address Src, llvm::Type *Ty, CodeGenFunction &CGF)
	CreateCoercedLoad - Create a load from.
static void	CreateCoercedStore (llvm::Value *Src, Address Dst, bool DstIsVolatile, CodeGenFunction &CGF)
	CreateCoercedStore - Create a store to.
static Address	emitAddressAtOffset (CodeGenFunction &CGF, Address addr, const ABIArgInfo &info)
static void	AddAttributesFromFunctionProtoType (ASTContext &Ctx, llvm::AttrBuilder &FuncAttrs, const FunctionProtoType *FPT)
static void	AddAttributesFromAssumes (llvm::AttrBuilder &FuncAttrs, const Decl *Callee)
static bool	HasStrictReturn (const CodeGenModule &Module, QualType RetTy, const Decl *TargetDecl)
static void	addDenormalModeAttrs (llvm::DenormalMode FPDenormalMode, llvm::DenormalMode FP32DenormalMode, llvm::AttrBuilder &FuncAttrs)
	Add denormal-fp-math and denormal-fp-math-f32 as appropriate for the requested denormal behavior, accounting for the overriding behavior of the -f32 case.
static void	addMergableDefaultFunctionAttributes (const CodeGenOptions &CodeGenOpts, llvm::AttrBuilder &FuncAttrs)
	Add default attributes to a function, which have merge semantics under -mlink-builtin-bitcode and should not simply overwrite any existing attributes in the linked library.
static void	getTrivialDefaultFunctionAttributes (StringRef Name, bool HasOptnone, const CodeGenOptions &CodeGenOpts, const LangOptions &LangOpts, bool AttrOnCallSite, llvm::AttrBuilder &FuncAttrs)
static void	overrideFunctionFeaturesWithTargetFeatures (llvm::AttrBuilder &FuncAttr, const llvm::Function &F, const TargetOptions &TargetOpts)
	Merges target-features from \TargetOpts and \F, and sets the result in \FuncAttr.
static void	addNoBuiltinAttributes (llvm::AttrBuilder &FuncAttrs, const LangOptions &LangOpts, const NoBuiltinAttr *NBA=nullptr)
static bool	DetermineNoUndef (QualType QTy, CodeGenTypes &Types, const llvm::DataLayout &DL, const ABIArgInfo &AI, bool CheckCoerce=true)
static bool	IsArgumentMaybeUndef (const Decl *TargetDecl, unsigned NumRequiredArgs, unsigned ArgNo)
	Check if the argument of a function has maybe_undef attribute.
static bool	canApplyNoFPClass (const ABIArgInfo &AI, QualType ParamType, bool IsReturn)
	Test if it's legal to apply nofpclass for the given parameter type and it's lowered IR type.
static llvm::FPClassTest	getNoFPClassTestMask (const LangOptions &LangOpts)
	Return the nofpclass mask that can be applied to floating-point parameters.
static llvm::Value *	emitArgumentDemotion (CodeGenFunction &CGF, const VarDecl *var, llvm::Value *value)
	An argument came in as a promoted argument; demote it back to its declared type.
static const NonNullAttr *	getNonNullAttr (const Decl *FD, const ParmVarDecl *PVD, QualType ArgType, unsigned ArgNo)
	Returns the attribute (either parameter attribute, or function attribute), which declares argument ArgNo to be non-null.
static void	eraseUnusedBitCasts (llvm::Instruction *insn)
static llvm::Value *	tryEmitFusedAutoreleaseOfResult (CodeGenFunction &CGF, llvm::Value *result)
	Try to emit a fused autorelease of a return result.
static llvm::Value *	tryRemoveRetainOfSelf (CodeGenFunction &CGF, llvm::Value *result)
	If this is a +1 of the value of an immutable 'self', remove it.
static llvm::Value *	emitAutoreleaseOfResult (CodeGenFunction &CGF, llvm::Value *result)
	Emit an ARC autorelease of the result of a function.
static llvm::StoreInst *	findDominatingStoreToReturnValue (CodeGenFunction &CGF)
	Heuristically search for a dominating store to the return-value slot.
static void	setBitRange (SmallVectorImpl< uint64_t > &Bits, int BitOffset, int BitWidth, int CharWidth)
static void	setBitRange (SmallVectorImpl< uint64_t > &Bits, int StorageOffset, int StorageSize, int BitOffset, int BitWidth, int CharWidth, bool BigEndian)
static void	setUsedBits (CodeGenModule &, QualType, int, SmallVectorImpl< uint64_t > &)
static void	setUsedBits (CodeGenModule &CGM, const RecordType *RTy, int Offset, SmallVectorImpl< uint64_t > &Bits)
static void	setUsedBits (CodeGenModule &CGM, const ConstantArrayType *ATy, int Offset, SmallVectorImpl< uint64_t > &Bits)
static uint64_t	buildMultiCharMask (const SmallVectorImpl< uint64_t > &Bits, int Pos, int Size, int CharWidth, bool BigEndian)
static bool	isInAllocaArgument (CGCXXABI &ABI, QualType type)
static AggValueSlot	createPlaceholderSlot (CodeGenFunction &CGF, QualType Ty)
static bool	isProvablyNull (llvm::Value *addr)
static void	emitWriteback (CodeGenFunction &CGF, const CallArgList::Writeback &writeback)
	Emit the actual writing-back of a writeback.
static void	emitWritebacks (CodeGenFunction &CGF, const CallArgList &args)
static void	deactivateArgCleanupsBeforeCall (CodeGenFunction &CGF, const CallArgList &CallArgs)
static const Expr *	maybeGetUnaryAddrOfOperand (const Expr *E)
static void	emitWritebackArg (CodeGenFunction &CGF, CallArgList &args, const ObjCIndirectCopyRestoreExpr *CRE)
	Emit an argument that's being passed call-by-writeback.
static bool	hasInAllocaArgs (CodeGenModule &CGM, CallingConv ExplicitCC, ArrayRef< QualType > ArgTypes)
static bool	isObjCMethodWithTypeParams (const ObjCMethodDecl *method)
static unsigned	getMaxVectorWidth (const llvm::Type *Ty)

Function Documentation

AddAttributesFromAssumes()

static void AddAttributesFromAssumes ( llvm::AttrBuilder &  FuncAttrs, const Decl *  Callee  )

static

Definition at line 1780 of file CGCall.cpp.

Referenced by clang::CodeGen::CodeGenModule::ConstructAttributeList().

AddAttributesFromFunctionProtoType()

static void AddAttributesFromFunctionProtoType ( ASTContext &  Ctx, llvm::AttrBuilder &  FuncAttrs, const FunctionProtoType *  FPT  )

static

Definition at line 1760 of file CGCall.cpp.

References clang::FunctionProtoType::getAArch64SMEAttributes(), clang::FunctionProtoType::getExceptionSpecType(), clang::FunctionProtoType::isNothrow(), clang::isUnresolvedExceptionSpec(), clang::FunctionType::SME_PStateSMCompatibleMask, clang::FunctionType::SME_PStateSMEnabledMask, clang::FunctionType::SME_PStateZAPreservedMask, and clang::FunctionType::SME_PStateZASharedMask.

Referenced by clang::CodeGen::CodeGenModule::ConstructAttributeList().

addDenormalModeAttrs()

static void addDenormalModeAttrs ( llvm::DenormalMode  FPDenormalMode, llvm::DenormalMode  FP32DenormalMode, llvm::AttrBuilder &  FuncAttrs  )

static

Add denormal-fp-math and denormal-fp-math-f32 as appropriate for the requested denormal behavior, accounting for the overriding behavior of the -f32 case.

Definition at line 1842 of file CGCall.cpp.

Referenced by addMergableDefaultFunctionAttributes(), and clang::CodeGen::mergeDefaultFunctionDefinitionAttributes().

addExtParameterInfosForCall()

static void addExtParameterInfosForCall ( llvm::SmallVectorImpl< FunctionProtoType::ExtParameterInfo > &  paramInfos, const FunctionProtoType *  proto, unsigned  prefixArgs, unsigned  totalArgs  )

static

Definition at line 121 of file CGCall.cpp.

References clang::FunctionProtoType::getExtParameterInfos(), clang::FunctionProtoType::getNumParams(), and clang::FunctionProtoType::hasExtParameterInfos().

Referenced by appendParameterTypes(), clang::CodeGen::CodeGenTypes::arrangeCXXConstructorCall(), arrangeFreeFunctionLikeCall(), and getExtParameterInfosForCall().

addMergableDefaultFunctionAttributes()

static void addMergableDefaultFunctionAttributes ( const CodeGenOptions &  CodeGenOpts, llvm::AttrBuilder &  FuncAttrs  )

static

Add default attributes to a function, which have merge semantics under -mlink-builtin-bitcode and should not simply overwrite any existing attributes in the linked library.

Definition at line 1856 of file CGCall.cpp.

References addDenormalModeAttrs(), clang::CodeGenOptions::FP32DenormalMode, and clang::CodeGenOptions::FPDenormalMode.

addNoBuiltinAttributes()

static void addNoBuiltinAttributes ( llvm::AttrBuilder &  FuncAttrs, const LangOptions &  LangOpts, const NoBuiltinAttr *  NBA = nullptr  )

static

Definition at line 2135 of file CGCall.cpp.

References clang::LangOptions::NoBuiltinFuncs.

Referenced by clang::CodeGen::CodeGenModule::ConstructAttributeList().

appendParameterTypes()

static void appendParameterTypes ( const CodeGenTypes &  CGT, SmallVectorImpl< CanQualType > &  prefix, SmallVectorImpl< FunctionProtoType::ExtParameterInfo > &  paramInfos, CanQual< FunctionProtoType >  FPT  )

static

Adds the formal parameters in FPT to the given prefix.

If any parameter in FPT has pass_object_size attrs, then we'll add parameters for those, too.

Definition at line 151 of file CGCall.cpp.

References addExtParameterInfosForCall(), clang::CodeGen::CodeGenTypes::getContext(), clang::ASTContext::getSizeType(), and clang::CanQual< T >::getTypePtr().

Referenced by clang::CodeGen::CodeGenTypes::arrangeCXXStructorDeclaration(), and arrangeLLVMFunctionInfo().

arrangeFreeFunctionLikeCall()

static const CGFunctionInfo & arrangeFreeFunctionLikeCall ( CodeGenTypes &  CGT, CodeGenModule &  CGM, const CallArgList &  args, const FunctionType *  fnType, unsigned  numExtraRequiredArgs, bool  chainCall  )

static

Arrange a call as unto a free function, except possibly with an additional number of formal parameters considered required.

Definition at line 581 of file CGCall.cpp.

References addExtParameterInfosForCall(), clang::CodeGen::RequiredArgs::All, clang::CodeGen::CodeGenTypes::arrangeLLVMFunctionInfo(), clang::CodeGen::RequiredArgs::forPrototypePlus(), clang::ASTContext::getCanonicalParamType(), clang::CodeGen::CodeGenTypes::getContext(), clang::FunctionType::getExtInfo(), clang::FunctionType::getReturnType(), GetReturnType(), clang::CodeGen::CodeGenModule::getTargetCodeGenInfo(), clang::CodeGen::IsChainCall, clang::CodeGen::TargetCodeGenInfo::isNoProtoCallVariadic(), and clang::CodeGen::None.

Referenced by clang::CodeGen::CodeGenTypes::arrangeBlockFunctionCall(), and clang::CodeGen::CodeGenTypes::arrangeFreeFunctionCall().

arrangeLLVMFunctionInfo()

static const CGFunctionInfo & arrangeLLVMFunctionInfo ( CodeGenTypes &  CGT, bool  instanceMethod, SmallVectorImpl< CanQualType > &  prefix, CanQual< FunctionProtoType >  FTP  )

static

Arrange the LLVM function layout for a value of the given function type, on top of any implicit parameters already stored.

Definition at line 184 of file CGCall.cpp.

References appendParameterTypes(), clang::CodeGen::CodeGenTypes::arrangeLLVMFunctionInfo(), clang::CodeGen::RequiredArgs::forPrototypePlus(), clang::CanQual< T >::getUnqualifiedType(), clang::CodeGen::IsInstanceMethod, clang::CodeGen::None, and clang::Required.

buildMultiCharMask()

static uint64_t buildMultiCharMask ( const SmallVectorImpl< uint64_t > &  Bits, int  Pos, int  Size, int  CharWidth, bool  BigEndian  )

static

Definition at line 3683 of file CGCall.cpp.

References P.

canApplyNoFPClass()

static bool canApplyNoFPClass ( const ABIArgInfo &  AI, QualType  ParamType, bool  IsReturn  )

static

Test if it's legal to apply nofpclass for the given parameter type and it's lowered IR type.

Definition at line 2244 of file CGCall.cpp.

References clang::CodeGen::ABIArgInfo::getCanBeFlattened(), clang::CodeGen::ABIArgInfo::getCoerceToType(), and clang::Type::hasFloatingRepresentation().

Referenced by clang::CodeGen::CodeGenModule::ConstructAttributeList().

CoerceIntOrPtrToIntOrPtr()

static llvm::Value * CoerceIntOrPtrToIntOrPtr ( llvm::Value *  Val, llvm::Type *  Ty, CodeGenFunction &  CGF  )

static

CoerceIntOrPtrToIntOrPtr - Convert a value Val to the specific Ty where both are either integers or pointers.

This does a truncation of the value if it is too large or a zero extension if it is too small.

This behaves as if the value were coerced through memory, so on big-endian targets the high bits are preserved in a truncation, while little-endian targets preserve the low bits.

Definition at line 1204 of file CGCall.cpp.

References clang::CodeGen::CodeGenFunction::Builder, clang::CodeGen::CodeGenFunction::CGM, clang::CodeGen::CodeGenModule::getDataLayout(), and clang::CodeGen::CodeGenTypeCache::IntPtrTy.

Referenced by CreateCoercedLoad(), and CreateCoercedStore().

CreateCoercedLoad()

static llvm::Value * CreateCoercedLoad ( Address  Src, llvm::Type *  Ty, CodeGenFunction &  CGF  )

static

CreateCoercedLoad - Create a load from.

• SrcPtr interpreted as a pointer to an object of type
• Ty, known to be aligned to
• SrcAlign bytes.

This safely handles the case when the src type is smaller than the destination type; in this situation the values of bits which not present in the src are undefined.

Definition at line 1258 of file CGCall.cpp.

References clang::CodeGen::CodeGenFunction::Builder, clang::CodeGen::CodeGenFunction::CGM, CoerceIntOrPtrToIntOrPtr(), clang::CodeGen::CGBuilderTy::CreateLoad(), clang::CodeGen::CGBuilderTy::CreateMemCpy(), CreateTempAllocaForCoercion(), EnterStructPointerForCoercedAccess(), clang::CodeGen::Address::getAlignment(), clang::CharUnits::getAsAlign(), clang::CodeGen::CodeGenModule::getDataLayout(), clang::CodeGen::Address::getElementType(), clang::CodeGen::Address::getName(), clang::CodeGen::Address::getPointer(), clang::CodeGen::CodeGenTypeCache::Int64Ty, clang::CodeGen::CodeGenTypeCache::IntPtrTy, clang::Result, and clang::CodeGen::Address::withElementType().

CreateCoercedStore()

static void CreateCoercedStore ( llvm::Value *  Src, Address  Dst, bool  DstIsVolatile, CodeGenFunction &  CGF  )

static

CreateCoercedStore - Create a store to.

• DstPtr from
• Src, where the source and destination may have different types. The destination is known to be aligned to
• DstAlign bytes.

This safely handles the case when the src type is larger than the destination type; the upper bits of the src will be lost.

Definition at line 1360 of file CGCall.cpp.

References clang::CodeGen::CodeGenFunction::Builder, clang::CodeGen::CodeGenFunction::CGM, CoerceIntOrPtrToIntOrPtr(), clang::CodeGen::CGBuilderTy::CreateAddrSpaceCast(), clang::CodeGen::CGBuilderTy::CreateMemCpy(), clang::CodeGen::CGBuilderTy::CreateStore(), CreateTempAllocaForCoercion(), clang::CodeGen::CodeGenFunction::EmitAggregateStore(), EnterStructPointerForCoercedAccess(), clang::CodeGen::Address::getAlignment(), clang::CharUnits::getAsAlign(), clang::CodeGen::CodeGenModule::getDataLayout(), clang::CodeGen::Address::getElementType(), clang::CodeGen::Address::getPointer(), clang::CodeGen::CodeGenTypeCache::IntPtrTy, and clang::CodeGen::Address::withElementType().

createPlaceholderSlot()

static AggValueSlot createPlaceholderSlot ( CodeGenFunction &  CGF, QualType  Ty  )

static

Definition at line 4011 of file CGCall.cpp.

References clang::CodeGen::CodeGenFunction::Builder, clang::CodeGen::CodeGenFunction::ConvertTypeForMem(), clang::CodeGen::CGBuilderTy::CreateAlignedLoad(), clang::CodeGen::AggValueSlot::DoesNotNeedGCBarriers, clang::CodeGen::AggValueSlot::DoesNotOverlap, clang::CodeGen::AggValueSlot::forAddr(), clang::CharUnits::fromQuantity(), clang::CodeGen::CodeGenFunction::getLLVMContext(), clang::QualType::getQualifiers(), clang::CodeGen::AggValueSlot::IsNotAliased, and clang::CodeGen::AggValueSlot::IsNotDestructed.

CreateTempAllocaForCoercion()

static Address CreateTempAllocaForCoercion ( CodeGenFunction &  CGF, llvm::Type *  Ty, CharUnits  MinAlign, const Twine &  Name = "tmp"  )

static

Create a temporary allocation for the purposes of coercion.

Definition at line 1153 of file CGCall.cpp.

References clang::CodeGen::CodeGenFunction::CGM, clang::CodeGen::CodeGenFunction::CreateTempAlloca(), clang::CharUnits::fromQuantity(), and clang::CodeGen::CodeGenModule::getDataLayout().

Referenced by CreateCoercedLoad(), and CreateCoercedStore().

deactivateArgCleanupsBeforeCall()

static void deactivateArgCleanupsBeforeCall ( CodeGenFunction &  CGF, const CallArgList &  CallArgs  )

static

Definition at line 4158 of file CGCall.cpp.

References clang::CodeGen::CodeGenFunction::DeactivateCleanupBlock(), and clang::CodeGen::CallArgList::getCleanupsToDeactivate().

DetermineNoUndef()

static bool DetermineNoUndef ( QualType  QTy, CodeGenTypes &  Types, const llvm::DataLayout &  DL, const ABIArgInfo &  AI, bool  CheckCoerce = true  )

static

Definition at line 2171 of file CGCall.cpp.

References clang::CodeGen::ABIArgInfo::canHaveCoerceToType(), Complex, DetermineNoUndef(), clang::CodeGen::ABIArgInfo::Extend, clang::CodeGen::ABIArgInfo::getCoerceToType(), clang::CodeGen::ABIArgInfo::getKind(), clang::CodeGen::ABIArgInfo::Indirect, clang::CodeGen::ABIArgInfo::IndirectAliased, clang::Type::isBitIntType(), clang::Type::isMemberPointerType(), clang::Type::isNullPtrType(), clang::Type::isReferenceType(), clang::Type::isScalarType(), and Vector.

Referenced by clang::CodeGen::CodeGenModule::ConstructAttributeList(), and DetermineNoUndef().

emitAddressAtOffset()

static Address emitAddressAtOffset ( CodeGenFunction &  CGF, Address  addr, const ABIArgInfo &  info  )

static

Definition at line 1424 of file CGCall.cpp.

References clang::CodeGen::CodeGenFunction::Builder, clang::CodeGen::CGBuilderTy::CreateConstInBoundsByteGEP(), clang::CharUnits::fromQuantity(), clang::CodeGen::ABIArgInfo::getCoerceToType(), clang::CodeGen::ABIArgInfo::getDirectOffset(), clang::CodeGen::CodeGenTypeCache::Int8Ty, and clang::CodeGen::Address::withElementType().

emitArgumentDemotion()

static llvm::Value * emitArgumentDemotion ( CodeGenFunction &  CGF, const VarDecl *  var, llvm::Value *  value  )

static

An argument came in as a promoted argument; demote it back to its declared type.

Definition at line 2858 of file CGCall.cpp.

References clang::CodeGen::CodeGenFunction::Builder, clang::CodeGen::CodeGenFunction::ConvertType(), and clang::ValueDecl::getType().

emitAutoreleaseOfResult()

static llvm::Value * emitAutoreleaseOfResult ( CodeGenFunction &  CGF, llvm::Value *  result  )

static

Emit an ARC autorelease of the result of a function.

Returns

the value to actually return from the function

Definition at line 3481 of file CGCall.cpp.

References clang::CodeGen::CodeGenFunction::EmitARCAutoreleaseReturnValue(), clang::CodeGen::CodeGenFunction::shouldUseFusedARCCalls(), tryEmitFusedAutoreleaseOfResult(), and tryRemoveRetainOfSelf().

emitWriteback()

static void emitWriteback ( CodeGenFunction &  CGF, const CallArgList::Writeback &  writeback  )

static

Emit the actual writing-back of a writeback.

Definition at line 4086 of file CGCall.cpp.

References clang::CodeGen::CodeGenFunction::Builder, clang::CodeGen::CodeGenFunction::CGM, clang::CodeGen::CodeGenFunction::createBasicBlock(), clang::CodeGen::CGBuilderTy::CreateLoad(), clang::CodeGen::CodeGenFunction::EmitARCIntrinsicUse(), clang::CodeGen::CodeGenFunction::EmitARCRelease(), clang::CodeGen::CodeGenFunction::EmitARCRetainNonBlock(), clang::CodeGen::CodeGenFunction::EmitBlock(), clang::CodeGen::CodeGenFunction::EmitLoadOfScalar(), clang::CodeGen::CodeGenFunction::EmitStoreOfScalar(), clang::CodeGen::CodeGenFunction::EmitStoreThroughLValue(), clang::CodeGen::RValue::get(), clang::CodeGen::LValue::getAddress(), clang::CodeGen::CodeGenModule::getDataLayout(), clang::CodeGen::Address::getElementType(), clang::CodeGen::LValue::getObjCLifetime(), clang::CodeGen::Address::getPointer(), clang::CodeGen::LValue::isARCPreciseLifetime(), isProvablyNull(), clang::Qualifiers::OCL_Strong, clang::CodeGen::CallArgList::Writeback::Source, clang::CodeGen::CallArgList::Writeback::Temporary, and clang::CodeGen::CallArgList::Writeback::ToUse.

Referenced by emitWritebacks().

emitWritebackArg()

static void emitWritebackArg ( CodeGenFunction &  CGF, CallArgList &  args, const ObjCIndirectCopyRestoreExpr *  CRE  )

static

Emit an argument that's being passed call-by-writeback.

That is, we are passing the address of an __autoreleased temporary; it might be copy-initialized with the current value of the given address, but it will definitely be copied out of after the call.

Definition at line 4180 of file CGCall.cpp.

References clang::CodeGen::CallArgList::add(), clang::CodeGen::CallArgList::addWriteback(), clang::CodeGen::CodeGenFunction::Builder, clang::Type::castAs(), clang::CodeGen::CodeGenFunction::CGM, clang::CodeGen::CodeGenFunction::ConvertType(), clang::CodeGen::CodeGenFunction::ConvertTypeForMem(), clang::CodeGen::CodeGenFunction::createBasicBlock(), clang::CodeGen::CGBuilderTy::CreateStore(), clang::CodeGen::CodeGenFunction::CreateTempAlloca(), clang::CodeGen::CodeGenFunction::EmitBlock(), clang::CodeGen::CodeGenFunction::EmitLoadOfLValue(), clang::CodeGen::CodeGenFunction::EmitLValue(), clang::CodeGen::CodeGenFunction::EmitPointerWithAlignment(), clang::CodeGen::RValue::get(), clang::CodeGen::LValue::getAddress(), clang::CodeGen::CodeGenModule::getCodeGenOpts(), clang::CodeGen::CodeGenModule::getDataLayout(), clang::CodeGen::LValue::getObjCLifetime(), clang::Type::getPointeeType(), clang::CodeGen::Address::getPointer(), clang::CodeGen::CodeGenTypeCache::getPointerAlign(), clang::CodeGen::RValue::getScalarVal(), clang::ObjCIndirectCopyRestoreExpr::getSubExpr(), clang::Expr::getType(), isProvablyNull(), clang::CodeGen::RValue::isScalar(), clang::CodeGen::CodeGenFunction::MakeAddrLValue(), maybeGetUnaryAddrOfOperand(), clang::Qualifiers::OCL_Strong, and clang::ObjCIndirectCopyRestoreExpr::shouldCopy().

emitWritebacks()

static void emitWritebacks ( CodeGenFunction &  CGF, const CallArgList &  args  )

static

Definition at line 4152 of file CGCall.cpp.

References emitWriteback(), and clang::CodeGen::CallArgList::writebacks().

EnterStructPointerForCoercedAccess()

static Address EnterStructPointerForCoercedAccess ( Address  SrcPtr, llvm::StructType *  SrcSTy, uint64_t  DstSize, CodeGenFunction &  CGF  )

static

EnterStructPointerForCoercedAccess - Given a struct pointer that we are accessing some number of bytes out of it, try to gep into the struct to get at its inner goodness.

Dive as deep as possible without entering an element with an in-memory size smaller than DstSize.

Definition at line 1168 of file CGCall.cpp.

References clang::CodeGen::CodeGenFunction::Builder, clang::CodeGen::CodeGenFunction::CGM, clang::CodeGen::CGBuilderTy::CreateStructGEP(), EnterStructPointerForCoercedAccess(), clang::CodeGen::CodeGenModule::getDataLayout(), and clang::CodeGen::Address::getElementType().

Referenced by CreateCoercedLoad(), CreateCoercedStore(), and EnterStructPointerForCoercedAccess().

eraseUnusedBitCasts()

static void eraseUnusedBitCasts ( llvm::Instruction *  insn )

static

Definition at line 3342 of file CGCall.cpp.

Referenced by tryRemoveRetainOfSelf().

findDominatingStoreToReturnValue()

static llvm::StoreInst * findDominatingStoreToReturnValue ( CodeGenFunction &  CGF )

static

Heuristically search for a dominating store to the return-value slot.

Definition at line 3499 of file CGCall.cpp.

References clang::CodeGen::CodeGenFunction::Builder, clang::CodeGen::CodeGenFunction::currentFunctionUsesSEHTry(), clang::CodeGen::Address::getElementType(), clang::CodeGen::Address::getPointer(), and clang::CodeGen::CodeGenFunction::ReturnValue.

forConstantArrayExpansion()

static void forConstantArrayExpansion ( CodeGenFunction &  CGF, ConstantArrayExpansion *  CAE, Address  BaseAddr, llvm::function_ref< void(Address)>  Fn  )

static

Definition at line 1026 of file CGCall.cpp.

References clang::CharUnits::alignmentOfArrayElement(), clang::CodeGen::CodeGenFunction::Builder, clang::CodeGen::CodeGenFunction::ConvertTypeForMem(), clang::CodeGen::Address::getAlignment(), clang::CodeGen::CodeGenFunction::getContext(), clang::CodeGen::Address::getElementType(), clang::CodeGen::Address::getPointer(), and clang::ASTContext::getTypeSizeInChars().

getArgTypesForCall()

static SmallVector< CanQualType, 16 > getArgTypesForCall ( ASTContext &  ctx, const CallArgList &  args  )

static

Definition at line 375 of file CGCall.cpp.

References clang::ASTContext::getCanonicalParamType().

Referenced by clang::CodeGen::CodeGenTypes::arrangeCall(), clang::CodeGen::CodeGenTypes::arrangeCXXMethodCall(), and clang::CodeGen::CodeGenTypes::arrangeUnprototypedObjCMessageSend().

getArgTypesForDeclaration()

static SmallVector< CanQualType, 16 > getArgTypesForDeclaration ( ASTContext &  ctx, const FunctionArgList &  args  )

static

Definition at line 383 of file CGCall.cpp.

References clang::ASTContext::getCanonicalParamType().

Referenced by clang::CodeGen::CodeGenTypes::arrangeBlockFunctionDeclaration(), and clang::CodeGen::CodeGenTypes::arrangeBuiltinFunctionDeclaration().

getCallingConventionForDecl()

static CallingConv getCallingConventionForDecl ( const ObjCMethodDecl *  D, bool  IsWindows  )

static

Definition at line 208 of file CGCall.cpp.

References clang::CC_AAPCS, clang::CC_AAPCS_VFP, clang::CC_AArch64SVEPCS, clang::CC_AArch64VectorCall, clang::CC_AMDGPUKernelCall, clang::CC_C, clang::CC_IntelOclBicc, clang::CC_M68kRTD, clang::CC_PreserveAll, clang::CC_PreserveMost, clang::CC_Win64, clang::CC_X86_64SysV, clang::CC_X86FastCall, clang::CC_X86Pascal, clang::CC_X86RegCall, clang::CC_X86StdCall, clang::CC_X86ThisCall, clang::CC_X86VectorCall, clang::Decl::getAttr(), and clang::Decl::hasAttr().

Referenced by clang::CodeGen::CodeGenTypes::arrangeObjCMessageSendSignature().

getExpansionSize()

static int getExpansionSize ( QualType  Ty, const ASTContext &  Context  )

static

Definition at line 984 of file CGCall.cpp.

References getExpansionSize(), and getTypeExpansion().

Referenced by getExpansionSize().

getExtParameterInfosForCall()

static llvm::SmallVector< FunctionProtoType::ExtParameterInfo, 16 > getExtParameterInfosForCall ( const FunctionProtoType *  proto, unsigned  prefixArgs, unsigned  totalArgs  )

static

Definition at line 391 of file CGCall.cpp.

References addExtParameterInfosForCall(), and clang::FunctionProtoType::hasExtParameterInfos().

Referenced by clang::CodeGen::CodeGenTypes::arrangeBlockFunctionDeclaration(), and clang::CodeGen::CodeGenTypes::arrangeCXXMethodCall().

GetFormalType()

static CanQual< FunctionProtoType > GetFormalType ( const CXXMethodDecl *  MD )

static

Returns the canonical formal type of the given C++ method.

Definition at line 97 of file CGCall.cpp.

References clang::CanQual< T >::getAs(), clang::Type::getCanonicalTypeUnqualified(), and clang::ValueDecl::getType().

Referenced by clang::CodeGen::CodeGenTypes::arrangeCXXConstructorCall(), clang::CodeGen::CodeGenTypes::arrangeCXXMethodDeclaration(), clang::CodeGen::CodeGenTypes::arrangeCXXStructorDeclaration(), clang::CodeGen::CodeGenTypes::arrangeMSCtorClosure(), and clang::CodeGen::CodeGenTypes::arrangeUnprototypedMustTailThunk().

getMaxVectorWidth()

static unsigned getMaxVectorWidth ( const llvm::Type *  Ty )

static

Definition at line 4940 of file CGCall.cpp.

References getMaxVectorWidth().

Referenced by getMaxVectorWidth().

getNoFPClassTestMask()

static llvm::FPClassTest getNoFPClassTestMask ( const LangOptions &  LangOpts )

static

Return the nofpclass mask that can be applied to floating-point parameters.

Definition at line 2266 of file CGCall.cpp.

Referenced by clang::CodeGen::CodeGenModule::ConstructAttributeList().

getNonNullAttr()

static const NonNullAttr * getNonNullAttr ( const Decl *  FD, const ParmVarDecl *  PVD, QualType  ArgType, unsigned  ArgNo  )

static

Returns the attribute (either parameter attribute, or function attribute), which declares argument ArgNo to be non-null.

Definition at line 2878 of file CGCall.cpp.

References clang::Decl::getAttr(), clang::Type::isAnyPointerType(), clang::Type::isBlockPointerType(), and clang::Decl::specific_attrs().

GetReturnType()

static CanQualType GetReturnType ( QualType  RetTy )

static

Returns the "extra-canonicalized" return type, which discards qualifiers on the return type.

Codegen doesn't care about them, and it makes ABI code a little easier to be able to assume that all parameter and return types are top-level unqualified.

Definition at line 106 of file CGCall.cpp.

References clang::Type::getCanonicalTypeUnqualified(), and clang::CanQual< T >::getUnqualifiedType().

Referenced by clang::CodeGen::CodeGenTypes::arrangeBlockFunctionDeclaration(), clang::CodeGen::CodeGenTypes::arrangeBuiltinFunctionCall(), clang::CodeGen::CodeGenTypes::arrangeBuiltinFunctionDeclaration(), clang::CodeGen::CodeGenTypes::arrangeCXXMethodCall(), arrangeFreeFunctionLikeCall(), clang::CodeGen::CodeGenTypes::arrangeObjCMessageSendSignature(), clang::CodeGen::CodeGenTypes::arrangeUnprototypedObjCMessageSend(), clang::Sema::BuildTypeTrait(), and clang::ento::retaincountchecker::RetainCountChecker::checkSummary().

getTrivialDefaultFunctionAttributes()

static void getTrivialDefaultFunctionAttributes ( StringRef  Name, bool  HasOptnone, const CodeGenOptions &  CodeGenOpts, const LangOptions &  LangOpts, bool  AttrOnCallSite, llvm::AttrBuilder &  FuncAttrs  )

static

Definition at line 1862 of file CGCall.cpp.

References clang::CodeGenOptions::All, clang::LangOptions::assumeFunctionsAreConvergent(), clang::CodeGenOptions::DefaultFunctionAttrs, clang::LangOptions::FPE_Ignore, clang::LangOptions::FPM_Fast, clang::LangOptions::FPM_FastHonorPragmas, clang::LangOptions::getDefaultExceptionMode(), clang::CodeGenOptions::getFramePointerKindName(), clang::LangOptions::isNoBuiltinFunc(), clang::CodeGenOptions::None, clang::CodeGenOptions::NonLeaf, clang::CodeGenOptions::PreferVectorWidth, clang::CodeGenOptions::Reciprocals, and clang::CodeGenOptions::TrapFuncName.

Referenced by clang::CodeGen::mergeDefaultFunctionDefinitionAttributes().

getTypeExpansion()

static std::unique_ptr< TypeExpansion > getTypeExpansion ( QualType  Ty, const ASTContext &  Context  )

static

Definition at line 930 of file CGCall.cpp.

References clang::RecordDecl::fields(), clang::Type::getAs(), clang::ASTContext::getAsConstantArrayType(), clang::ASTContext::getTypeSizeInChars(), clang::RecordDecl::hasFlexibleArrayMember(), clang::TagDecl::isUnion(), and clang::CharUnits::Zero().

Referenced by clang::CodeGen::CodeGenTypes::getExpandedTypes(), and getExpansionSize().

hasInAllocaArgs()

static bool hasInAllocaArgs ( CodeGenModule &  CGM, CallingConv  ExplicitCC, ArrayRef< QualType >  ArgTypes  )

static

Definition at line 4374 of file CGCall.cpp.

References clang::CC_Swift, clang::CC_SwiftAsync, clang::TargetInfo::getCXXABI(), clang::CodeGen::CodeGenModule::getCXXABI(), clang::CodeGen::CodeGenModule::getTarget(), isInAllocaArgument(), and clang::TargetCXXABI::isMicrosoft().

HasStrictReturn()

static bool HasStrictReturn ( const CodeGenModule &  Module, QualType  RetTy, const Decl *  TargetDecl  )

static

Definition at line 1807 of file CGCall.cpp.

Referenced by clang::CodeGen::CodeGenModule::ConstructAttributeList().

IsArgumentMaybeUndef()

static bool IsArgumentMaybeUndef ( const Decl *  TargetDecl, unsigned  NumRequiredArgs, unsigned  ArgNo  )

static

Check if the argument of a function has maybe_undef attribute.

Definition at line 2222 of file CGCall.cpp.

References clang::Decl::hasAttr().

isInAllocaArgument()

static bool isInAllocaArgument ( CGCXXABI &  ABI, QualType  type  )

static

Definition at line 4006 of file CGCall.cpp.

References clang::CodeGen::CGCXXABI::getRecordArgABI(), clang::CodeGen::CGCXXABI::RAA_DirectInMemory, and clang::ast_matchers::type.

Referenced by hasInAllocaArgs().

isObjCMethodWithTypeParams()

static bool isObjCMethodWithTypeParams ( const ObjCMethodDecl *  method )

static

Definition at line 4392 of file CGCall.cpp.

References clang::Decl::getDeclContext().

isProvablyNull()

static bool isProvablyNull ( llvm::Value *  addr )

static

Definition at line 4081 of file CGCall.cpp.

Referenced by emitWriteback(), and emitWritebackArg().

maybeGetUnaryAddrOfOperand()

static const Expr * maybeGetUnaryAddrOfOperand ( const Expr *  E )

static

Definition at line 4169 of file CGCall.cpp.

References clang::Expr::IgnoreParens().

Referenced by emitWritebackArg().

overrideFunctionFeaturesWithTargetFeatures()

static void overrideFunctionFeaturesWithTargetFeatures ( llvm::AttrBuilder &  FuncAttr, const llvm::Function &  F, const TargetOptions &  TargetOpts  )

static

Merges target-features from \TargetOpts and \F, and sets the result in \FuncAttr.

• features from \F are always kept
• a feature from \TargetOpts is kept if itself and its opposite are absent from \F

Definition at line 2014 of file CGCall.cpp.

References clang::TargetOptions::Features.

Referenced by clang::CodeGen::mergeDefaultFunctionDefinitionAttributes().

setBitRange() [1/2]

static void setBitRange ( SmallVectorImpl< uint64_t > &  Bits, int  BitOffset, int  BitWidth, int  CharWidth  )

static

Definition at line 3562 of file CGCall.cpp.

References Used.

Referenced by setBitRange(), and setUsedBits().

setBitRange() [2/2]

static void setBitRange ( SmallVectorImpl< uint64_t > &  Bits, int  StorageOffset, int  StorageSize, int  BitOffset, int  BitWidth, int  CharWidth, bool  BigEndian  )

static

Definition at line 3593 of file CGCall.cpp.

References setBitRange(), and V.

setCUDAKernelCallingConvention()

static void setCUDAKernelCallingConvention ( CanQualType &  FTy, CodeGenModule &  CGM, const FunctionDecl *  FD  )

static

Set calling convention for CUDA/HIP kernel.

Definition at line 283 of file CGCall.cpp.

References clang::CanQual< T >::getAs(), clang::Type::getCanonicalTypeUnqualified(), clang::CodeGen::CodeGenModule::getTargetCodeGenInfo(), clang::Decl::hasAttr(), and clang::CodeGen::TargetCodeGenInfo::setCUDAKernelCallingConvention().

Referenced by clang::CodeGen::CodeGenTypes::arrangeCXXMethodDeclaration(), and clang::CodeGen::CodeGenTypes::arrangeFunctionDeclaration().

setUsedBits() [1/3]

static void setUsedBits ( CodeGenModule &  CGM, QualType  QTy, int  Offset, SmallVectorImpl< uint64_t > &  Bits  )

static

Definition at line 3666 of file CGCall.cpp.

References clang::Type::getAs(), clang::ASTContext::getAsConstantArrayType(), clang::ASTContext::getCharWidth(), clang::CodeGen::CodeGenModule::getContext(), clang::CharUnits::getQuantity(), clang::ASTContext::getTypeSizeInChars(), and setUsedBits().

Referenced by setUsedBits().

setUsedBits() [2/3]

static void setUsedBits ( CodeGenModule &  CGM, const ConstantArrayType *  ATy, int  Offset, SmallVectorImpl< uint64_t > &  Bits  )

static

Definition at line 3647 of file CGCall.cpp.

References clang::ASTContext::getBaseElementType(), clang::ASTContext::getConstantArrayElementCount(), clang::CodeGen::CodeGenModule::getContext(), clang::CharUnits::getQuantity(), clang::ASTContext::getTypeSizeInChars(), and setUsedBits().

setUsedBits() [3/3]

static void setUsedBits ( CodeGenModule &  CGM, const RecordType *  RTy, int  Offset, SmallVectorImpl< uint64_t > &  Bits  )

static

Definition at line 3615 of file CGCall.cpp.

References clang::RecordDecl::field_begin(), clang::RecordDecl::field_end(), clang::ASTContext::getASTRecordLayout(), clang::CodeGen::CGRecordLayout::getBitFieldInfo(), clang::CodeGen::CodeGenTypes::getCGRecordLayout(), clang::ASTContext::getCharWidth(), clang::CodeGen::CodeGenModule::getContext(), clang::CodeGen::CodeGenModule::getDataLayout(), clang::RecordType::getDecl(), clang::RecordDecl::getDefinition(), clang::ASTRecordLayout::getFieldOffset(), clang::CharUnits::getQuantity(), clang::ValueDecl::getType(), clang::CodeGen::CodeGenModule::getTypes(), clang::FieldDecl::isBitField(), clang::Type::isIncompleteArrayType(), clang::FieldDecl::isUnnamedBitfield(), clang::FieldDecl::isZeroLengthBitField(), clang::CodeGen::CGBitFieldInfo::Offset, setBitRange(), setUsedBits(), clang::CodeGen::CGBitFieldInfo::Size, clang::CodeGen::CGBitFieldInfo::StorageOffset, and clang::CodeGen::CGBitFieldInfo::StorageSize.

tryEmitFusedAutoreleaseOfResult()

static llvm::Value * tryEmitFusedAutoreleaseOfResult ( CodeGenFunction &  CGF, llvm::Value *  result  )

static

Try to emit a fused autorelease of a return result.

Definition at line 3354 of file CGCall.cpp.

References clang::CodeGen::CodeGenFunction::Builder, clang::CodeGen::CodeGenFunction::CGM, clang::CodeGen::CodeGenFunction::EmitARCRetainAutoreleaseReturnValue(), clang::CodeGen::CodeGenModule::getObjCEntrypoints(), clang::CodeGen::ObjCEntrypoints::objc_retain, clang::CodeGen::ObjCEntrypoints::objc_retainAutoreleasedReturnValue, and clang::CodeGen::ObjCEntrypoints::retainAutoreleasedReturnValueMarker.

Referenced by emitAutoreleaseOfResult().

tryRemoveRetainOfSelf()

static llvm::Value * tryRemoveRetainOfSelf ( CodeGenFunction &  CGF, llvm::Value *  result  )

static

If this is a +1 of the value of an immutable 'self', remove it.

Definition at line 3442 of file CGCall.cpp.

References clang::CodeGen::CodeGenFunction::Builder, clang::CodeGen::CodeGenFunction::CGM, clang::CodeGen::CodeGenFunction::CurCodeDecl, eraseUnusedBitCasts(), clang::CodeGen::CodeGenFunction::GetAddrOfLocalVar(), clang::CodeGen::CodeGenModule::getObjCEntrypoints(), clang::CodeGen::Address::getPointer(), clang::ObjCMethodDecl::getSelfDecl(), clang::ValueDecl::getType(), clang::QualType::isConstQualified(), and clang::CodeGen::ObjCEntrypoints::objc_retain.

Referenced by emitAutoreleaseOfResult().