CGCall.cpp File Reference

#include "CGCall.h"
#include "ABIInfo.h"
#include "ABIInfoImpl.h"
#include "CGBlocks.h"
#include "CGCXXABI.h"
#include "CGCleanup.h"
#include "CGDebugInfo.h"
#include "CGRecordLayout.h"
#include "CodeGenFunction.h"
#include "CodeGenModule.h"
#include "CodeGenPGO.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
	The JSON file list parser is used to communicate input to InstallAPI.
namespace	clang::CodeGen

Macros
#define	CC_VLS_CASE(ABI_VLEN)
#define	CC_VLS_CASE(ABI_VLEN)

Typedefs
using	ExtParameterInfoList
using	CanQualTypeList = SmallVector<CanQualType, 16>

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 IsTargetDefaultMSABI)
static void	setCUDAKernelCallingConvention (CanQualType &FTy, CodeGenModule &CGM, const FunctionDecl *FD)
	Set calling convention for CUDA/HIP kernel.
static CanQualTypeList	getArgTypesForCall (ASTContext &ctx, const CallArgList &args)
static CanQualTypeList	getArgTypesForDeclaration (ASTContext &ctx, const FunctionArgList &args)
static ExtParameterInfoList	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 RawAddress	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 Address	emitAddressAtOffset (CodeGenFunction &CGF, Address addr, const ABIArgInfo &info)
static std::pair< llvm::Value *, bool >	CoerceScalableToFixed (CodeGenFunction &CGF, llvm::FixedVectorType *ToTy, llvm::ScalableVectorType *FromTy, llvm::Value *V, StringRef Name="")
static void	AddAttributesFromFunctionProtoType (ASTContext &Ctx, llvm::AttrBuilder &FuncAttrs, const FunctionProtoType *FPT)
static void	AddAttributesFromOMPAssumes (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 bool	isProvablyNonNull (Address Addr, CodeGenFunction &CGF)
static void	emitWriteback (CodeGenFunction &CGF, const CallArgList::Writeback &writeback)
	Emit the actual writing-back of a writeback.
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)

Macro Definition Documentation

CC_VLS_CASE [1/2]

#define CC_VLS_CASE

(

ABI_VLEN

)

Value:

  case CC_RISCVVLSCall_##ABI_VLEN:                                             \
    return llvm::CallingConv::RISCV_VLSCall_##ABI_VLEN;

CC_VLS_CASE [2/2]

#define CC_VLS_CASE

(

ABI_VLEN

)

Value:

  case ABI_VLEN:                                                               \
    return CC_RISCVVLSCall_##ABI_VLEN;

Typedef Documentation

CanQualTypeList

using CanQualTypeList = SmallVector<CanQualType, 16>

Definition at line 244 of file CGCall.cpp.

ExtParameterInfoList

using ExtParameterInfoList

Initial value:

 
    SmallVector<FunctionProtoType::ExtParameterInfo, 16>

Definition at line 224 of file CGCall.cpp.

Function Documentation

AddAttributesFromFunctionProtoType()

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

static

Definition at line 1839 of file CGCall.cpp.

References clang::FunctionType::ARM_In, clang::FunctionType::ARM_InOut, clang::FunctionType::ARM_Out, clang::FunctionType::ARM_Preserves, clang::FunctionProtoType::getAArch64SMEAttributes(), clang::FunctionType::getArmZAState(), clang::FunctionType::getArmZT0State(), clang::FunctionProtoType::getExceptionSpecType(), clang::FunctionProtoType::isNothrow(), clang::isUnresolvedExceptionSpec(), clang::FunctionType::SME_AgnosticZAStateMask, clang::FunctionType::SME_PStateSMCompatibleMask, and clang::FunctionType::SME_PStateSMEnabledMask.

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

AddAttributesFromOMPAssumes()

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

static

Definition at line 1878 of file CGCall.cpp.

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

addDenormalModeAttrs()

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 1940 of file CGCall.cpp.

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

addExtParameterInfosForCall()

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

static

Definition at line 166 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()

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 1954 of file CGCall.cpp.

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

addNoBuiltinAttributes()

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

static

Definition at line 2242 of file CGCall.cpp.

References clang::LangOptions::NoBuiltinFuncs.

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

appendParameterTypes()

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 194 of file CGCall.cpp.

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

arrangeFreeFunctionLikeCall()

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 657 of file CGCall.cpp.

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

arrangeLLVMFunctionInfo()

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 230 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()

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

static

Definition at line 3901 of file CGCall.cpp.

Referenced by clang::CodeGen::CodeGenFunction::EmitCMSEClearRecord(), and clang::CodeGen::CodeGenFunction::EmitCMSEClearRecord().

canApplyNoFPClass()

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 2351 of file CGCall.cpp.

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

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

CoerceIntOrPtrToIntOrPtr()

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 1268 of file CGCall.cpp.

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

Referenced by CreateCoercedLoad(), and clang::CodeGen::CodeGenFunction::CreateCoercedStore().

CoerceScalableToFixed()

std::pair< llvm::Value *, bool > CoerceScalableToFixed ( CodeGenFunction & CGF, llvm::FixedVectorType * ToTy, llvm::ScalableVectorType * FromTy, llvm::Value * V, StringRef Name = "" )

static

Definition at line 1481 of file CGCall.cpp.

References clang::CodeGen::CodeGenFunction::Builder, and V.

Referenced by clang::CodeGen::CodeGenFunction::EmitFunctionProlog().

CreateCoercedLoad()

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 1319 of file CGCall.cpp.

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

Referenced by clang::CodeGen::CodeGenFunction::EmitCall(), and clang::CodeGen::CodeGenFunction::EmitFunctionEpilog().

createPlaceholderSlot()

AggValueSlot createPlaceholderSlot ( CodeGenFunction & CGF, QualType Ty )

static

Definition at line 4250 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.

Referenced by clang::CodeGen::CodeGenFunction::EmitCallArg().

CreateTempAllocaForCoercion()

RawAddress 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 1216 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 clang::CodeGen::CodeGenFunction::CreateCoercedStore().

deactivateArgCleanupsBeforeCall()

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

static

Definition at line 4396 of file CGCall.cpp.

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

Referenced by clang::CodeGen::CodeGenFunction::EmitCall().

DetermineNoUndef()

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

static

Definition at line 2278 of file CGCall.cpp.

References clang::CodeGen::ABIArgInfo::canHaveCoerceToType(), Complex, clang::CodeGen::CodeGenTypes::ConvertTypeForMem(), 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::CodeGen::ABIArgInfo::isNoExt(), clang::Type::isNullPtrType(), clang::Type::isReferenceType(), clang::Type::isScalarType(), and clang::Vector.

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

emitAddressAtOffset()

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

static

Definition at line 1469 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().

Referenced by clang::CodeGen::CodeGenFunction::EmitCall(), clang::CodeGen::CodeGenFunction::EmitFunctionEpilog(), and clang::CodeGen::CodeGenFunction::EmitFunctionProlog().

emitArgumentDemotion()

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 3021 of file CGCall.cpp.

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

Referenced by clang::CodeGen::CodeGenFunction::EmitFunctionProlog().

emitAutoreleaseOfResult()

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 3685 of file CGCall.cpp.

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

Referenced by clang::CodeGen::CodeGenFunction::EmitFunctionEpilog().

emitWriteback()

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

static

Emit the actual writing-back of a writeback.

Definition at line 4325 of file CGCall.cpp.

References clang::CodeGen::CodeGenFunction::Builder, clang::CodeGen::CodeGenFunction::createBasicBlock(), clang::CodeGen::CGBuilderTy::CreateIsNull(), clang::CodeGen::CGBuilderTy::CreateLoad(), clang::CodeGen::CodeGenFunction::EmitARCIntrinsicUse(), clang::CodeGen::CodeGenFunction::EmitARCRelease(), clang::CodeGen::CodeGenFunction::EmitARCRetainNonBlock(), clang::CodeGen::CodeGenFunction::EmitBlock(), clang::CodeGen::CodeGenFunction::EmitIgnoredExpr(), clang::CodeGen::CodeGenFunction::EmitLifetimeEnd(), clang::CodeGen::CodeGenFunction::EmitLoadOfScalar(), clang::CodeGen::CodeGenFunction::EmitStoreOfScalar(), clang::CodeGen::CodeGenFunction::EmitStoreThroughLValue(), clang::CodeGen::RValue::get(), clang::CodeGen::Address::getBasePointer(), clang::CodeGen::Address::getElementType(), isProvablyNonNull(), isProvablyNull(), clang::Qualifiers::OCL_Strong, clang::CodeGen::CallArgList::Writeback::Source, clang::CodeGen::CallArgList::Writeback::Temporary, clang::CodeGen::CallArgList::Writeback::ToUse, and clang::CodeGen::CallArgList::Writeback::WritebackExpr.

Referenced by clang::CodeGen::CodeGenFunction::EmitWritebacks().

emitWritebackArg()

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 4418 of file CGCall.cpp.

References clang::CodeGen::CallArgList::add(), clang::CodeGen::CallArgList::addWriteback(), clang::CodeGen::CodeGenFunction::ConditionalEvaluation::begin(), clang::CodeGen::CodeGenFunction::Builder, clang::cast(), clang::Type::castAs(), clang::CodeGen::CodeGenFunction::CGM, clang::CodeGen::CodeGenFunction::ConvertType(), clang::CodeGen::CodeGenFunction::ConvertTypeForMem(), clang::CodeGen::CodeGenFunction::createBasicBlock(), clang::CodeGen::CGBuilderTy::CreateIsNull(), 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::Address::emitRawPointer(), clang::CodeGen::CodeGenFunction::ConditionalEvaluation::end(), clang::CodeGen::RValue::get(), clang::CodeGen::Address::getBasePointer(), clang::CodeGen::CodeGenModule::getCodeGenOpts(), clang::Type::getPointeeType(), getPointeeType(), clang::CodeGen::CodeGenTypeCache::getPointerAlign(), clang::CodeGen::RValue::getScalarVal(), clang::ObjCIndirectCopyRestoreExpr::getSubExpr(), clang::Expr::getType(), isProvablyNonNull(), isProvablyNull(), clang::CodeGen::RValue::isScalar(), clang::CodeGen::CodeGenFunction::MakeAddrLValue(), maybeGetUnaryAddrOfOperand(), clang::Qualifiers::OCL_Strong, and clang::ObjCIndirectCopyRestoreExpr::shouldCopy().

Referenced by clang::CodeGen::CodeGenFunction::EmitCallArg().

EnterStructPointerForCoercedAccess()

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 1231 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(), clang::CodeGen::CodeGenFunction::CreateCoercedStore(), and EnterStructPointerForCoercedAccess().

eraseUnusedBitCasts()

void eraseUnusedBitCasts ( llvm::Instruction * insn )

static

Definition at line 3539 of file CGCall.cpp.

References clang::cast().

Referenced by tryRemoveRetainOfSelf().

findDominatingStoreToReturnValue()

llvm::StoreInst * findDominatingStoreToReturnValue ( CodeGenFunction & CGF )

static

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

Definition at line 3703 of file CGCall.cpp.

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

Referenced by clang::CodeGen::CodeGenFunction::EmitFunctionEpilog().

forConstantArrayExpansion()

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

static

Definition at line 1096 of file CGCall.cpp.

References clang::CodeGen::CodeGenFunction::Builder, and clang::CodeGen::CGBuilderTy::CreateConstGEP2_32().

getArgTypesForCall()

CanQualTypeList getArgTypesForCall ( ASTContext & ctx, const CallArgList & args )

static

Definition at line 450 of file CGCall.cpp.

References clang::ASTContext::getCanonicalParamType().

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

getArgTypesForDeclaration()

CanQualTypeList getArgTypesForDeclaration ( ASTContext & ctx, const FunctionArgList & args )

static

Definition at line 458 of file CGCall.cpp.

References clang::ASTContext::getCanonicalParamType().

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

getCallingConventionForDecl()

CallingConv getCallingConventionForDecl ( const ObjCMethodDecl * D, bool IsTargetDefaultMSABI )

static

Definition at line 255 of file CGCall.cpp.

References clang::CC_AAPCS, clang::CC_AAPCS_VFP, clang::CC_AArch64SVEPCS, clang::CC_AArch64VectorCall, clang::CC_C, clang::CC_DeviceKernel, clang::CC_IntelOclBicc, clang::CC_M68kRTD, clang::CC_PreserveAll, clang::CC_PreserveMost, clang::CC_PreserveNone, clang::CC_RISCVVectorCall, CC_VLS_CASE, 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(), and clang::CodeGen::CodeGenFunction::EmitCallArgs().

getExpansionSize()

int getExpansionSize ( QualType Ty, const ASTContext & Context )

static

Definition at line 1055 of file CGCall.cpp.

References getExpansionSize(), getTypeExpansion(), and clang::isa().

Referenced by getExpansionSize().

getExtParameterInfosForCall()

ExtParameterInfoList getExtParameterInfosForCall ( const FunctionProtoType * proto, unsigned prefixArgs, unsigned totalArgs )

static

Definition at line 467 of file CGCall.cpp.

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

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

GetFormalType()

CanQual< FunctionProtoType > GetFormalType ( const CXXMethodDecl * MD )

static

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

Definition at line 141 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()

unsigned getMaxVectorWidth ( const llvm::Type * Ty )

static

Definition at line 5202 of file CGCall.cpp.

References getMaxVectorWidth().

Referenced by clang::CodeGen::CodeGenFunction::EmitCall(), and getMaxVectorWidth().

getNoFPClassTestMask()

llvm::FPClassTest getNoFPClassTestMask ( const LangOptions & LangOpts )

static

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

Definition at line 2372 of file CGCall.cpp.

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

getNonNullAttr()

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 3042 of file CGCall.cpp.

References clang::Decl::getAttr(), and clang::Decl::specific_attrs().

Referenced by clang::CodeGen::CodeGenFunction::EmitFunctionProlog(), and clang::CodeGen::CodeGenFunction::EmitNonNullArgCheck().

GetReturnType()

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 151 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(), clang::CodeGen::CodeGenTypes::arrangeDeviceKernelCallerDeclaration(), arrangeFreeFunctionLikeCall(), clang::CodeGen::CodeGenTypes::arrangeObjCMessageSendSignature(), clang::CodeGen::CodeGenTypes::arrangeUnprototypedObjCMessageSend(), clang::Sema::BuildTypeTrait(), and clang::ento::retaincountchecker::RetainCountChecker::checkSummary().

getTrivialDefaultFunctionAttributes()

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

static

Definition at line 1960 of file CGCall.cpp.

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

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

getTypeExpansion()

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

static

Definition at line 1002 of file CGCall.cpp.

References clang::Type::getAs(), clang::Type::getAsRecordDecl(), and clang::CharUnits::Zero().

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

hasInAllocaArgs()

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

static

Definition at line 4622 of file CGCall.cpp.

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

Referenced by clang::CodeGen::CodeGenFunction::EmitCallArgs().

HasStrictReturn()

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

static

Definition at line 1905 of file CGCall.cpp.

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

IsArgumentMaybeUndef()

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

static

Check if the argument of a function has maybe_undef attribute.

Definition at line 2329 of file CGCall.cpp.

Referenced by clang::CodeGen::CodeGenFunction::EmitCall().

isInAllocaArgument()

bool isInAllocaArgument ( CGCXXABI & ABI, QualType type )

static

Definition at line 4245 of file CGCall.cpp.

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

Referenced by hasInAllocaArgs().

isObjCMethodWithTypeParams()

bool isObjCMethodWithTypeParams ( const ObjCMethodDecl * method )

static

Definition at line 4640 of file CGCall.cpp.

References clang::Decl::getDeclContext().

Referenced by clang::CodeGen::CodeGenFunction::EmitCallArgs().

isProvablyNonNull()

bool isProvablyNonNull ( Address Addr, CodeGenFunction & CGF )

static

Definition at line 4320 of file CGCall.cpp.

References clang::Addr, clang::CodeGen::CodeGenFunction::CGM, and clang::CodeGen::CodeGenModule::getDataLayout().

Referenced by emitWriteback(), and emitWritebackArg().

isProvablyNull()

bool isProvablyNull ( llvm::Value * addr )

static

Definition at line 4316 of file CGCall.cpp.

Referenced by emitWriteback(), and emitWritebackArg().

maybeGetUnaryAddrOfOperand()

const Expr * maybeGetUnaryAddrOfOperand ( const Expr * E )

static

Definition at line 4407 of file CGCall.cpp.

References clang::Expr::IgnoreParens().

Referenced by emitWritebackArg().

overrideFunctionFeaturesWithTargetFeatures()

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 2116 of file CGCall.cpp.

References Feature, and clang::TargetOptions::Features.

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

setBitRange() [1/2]

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

static

Definition at line 3781 of file CGCall.cpp.

References Used.

Referenced by setBitRange(), and setUsedBits().

setBitRange() [2/2]

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

static

Definition at line 3812 of file CGCall.cpp.

References setBitRange(), and V.

setCUDAKernelCallingConvention()

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

static

Set calling convention for CUDA/HIP kernel.

Definition at line 359 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]

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

static

Definition at line 3884 of file CGCall.cpp.

References clang::Type::getAsCanonical(), clang::CodeGen::CodeGenModule::getContext(), and setUsedBits().

Referenced by clang::CodeGen::CodeGenFunction::EmitCMSEClearRecord(), clang::CodeGen::CodeGenFunction::EmitCMSEClearRecord(), setUsedBits(), setUsedBits(), and setUsedBits().

setUsedBits() [2/3]

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

static

Definition at line 3865 of file CGCall.cpp.

References clang::CodeGen::CodeGenModule::getContext(), and setUsedBits().

setUsedBits() [3/3]

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

static

Definition at line 3834 of file CGCall.cpp.

References clang::RecordDecl::field_begin(), clang::RecordDecl::field_end(), clang::CodeGen::CGRecordLayout::getBitFieldInfo(), clang::CodeGen::CodeGenTypes::getCGRecordLayout(), clang::ASTContext::getCharWidth(), clang::CodeGen::CodeGenModule::getContext(), clang::CodeGen::CodeGenModule::getDataLayout(), 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()

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

static

Try to emit a fused autorelease of a return result.

Definition at line 3552 of file CGCall.cpp.

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

Referenced by emitAutoreleaseOfResult().

tryRemoveRetainOfSelf()

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 3644 of file CGCall.cpp.

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

Referenced by emitAutoreleaseOfResult().