#include "TargetInfo.h"
#include "ABIInfo.h"
#include "CGBlocks.h"
#include "CGCXXABI.h"
#include "CGValue.h"
#include "CodeGenFunction.h"
#include "clang/AST/RecordLayout.h"
#include "clang/CodeGen/CGFunctionInfo.h"
#include "clang/CodeGen/SwiftCallingConv.h"
#include "clang/Frontend/CodeGenOptions.h"
#include "llvm/ADT/StringExtras.h"
#include "llvm/ADT/StringSwitch.h"
#include "llvm/ADT/Triple.h"
#include "llvm/ADT/Twine.h"
#include "llvm/IR/DataLayout.h"
#include "llvm/IR/Type.h"
#include "llvm/Support/raw_ostream.h"
#include <algorithm>

Include dependency graph for TargetInfo.cpp:

Namespaces
	clang
	Dataflow Directional Tag Classes.

	clang::CodeGen

Enumerations
enum

enum	X86AVXABILevel
	The AVX ABI level for X86 targets. More...

Functions
static ABIArgInfo	coerceToIntArray (QualType Ty, ASTContext &Context, llvm::LLVMContext &LLVMContext)

static void	AssignToArrayRange (CodeGen::CGBuilderTy &Builder, llvm::Value Array, llvm::Value Value, unsigned FirstIndex, unsigned LastIndex)

static bool	isAggregateTypeForABI (QualType T)

static bool	occupiesMoreThan (CodeGenTypes &cgt, ArrayRef< llvm::Type *> scalarTypes, unsigned maxAllRegisters)
	Does the given lowering require more than the given number of registers when expanded? More...

static CGCXXABI::RecordArgABI	getRecordArgABI (const RecordType *RT, CGCXXABI &CXXABI)

static CGCXXABI::RecordArgABI	getRecordArgABI (QualType T, CGCXXABI &CXXABI)

static bool	classifyReturnType (const CGCXXABI &CXXABI, CGFunctionInfo &FI, const ABIInfo &Info)

static QualType	useFirstFieldIfTransparentUnion (QualType Ty)
	Pass transparent unions as if they were the type of the first element. More...

static llvm::Value *	emitRoundPointerUpToAlignment (CodeGenFunction &CGF, llvm::Value *Ptr, CharUnits Align)

static Address	emitVoidPtrDirectVAArg (CodeGenFunction &CGF, Address VAListAddr, llvm::Type *DirectTy, CharUnits DirectSize, CharUnits DirectAlign, CharUnits SlotSize, bool AllowHigherAlign)
	Emit va_arg for a platform using the common void* representation, where arguments are simply emitted in an array of slots on the stack. More...

static Address	emitVoidPtrVAArg (CodeGenFunction &CGF, Address VAListAddr, QualType ValueTy, bool IsIndirect, std::pair< CharUnits, CharUnits > ValueInfo, CharUnits SlotSizeAndAlign, bool AllowHigherAlign)
	Emit va_arg for a platform using the common void* representation, where arguments are simply emitted in an array of slots on the stack. More...

static Address	emitMergePHI (CodeGenFunction &CGF, Address Addr1, llvm::BasicBlock Block1, Address Addr2, llvm::BasicBlock Block2, const llvm::Twine &Name="")

static bool	isEmptyRecord (ASTContext &Context, QualType T, bool AllowArrays)
	isEmptyRecord - Return true iff a structure contains only empty fields. More...

static bool	isEmptyField (ASTContext &Context, const FieldDecl *FD, bool AllowArrays)
	isEmptyField - Return true iff a the field is "empty", that is it is an unnamed bit-field or an (array of) empty record(s). More...

static const Type *	isSingleElementStruct (QualType T, ASTContext &Context)
	isSingleElementStruct - Determine if a structure is a "single element struct", i.e. More...

static void	rewriteInputConstraintReferences (unsigned FirstIn, unsigned NumNewOuts, std::string &AsmString)
	Rewrite input constraint references after adding some output constraints. More...

static bool	is32Or64BitBasicType (QualType Ty, ASTContext &Context)

static bool	addFieldSizes (ASTContext &Context, const RecordDecl *RD, uint64_t &Size)

static bool	addBaseAndFieldSizes (ASTContext &Context, const CXXRecordDecl *RD, uint64_t &Size)

static bool	isSSEVectorType (ASTContext &Context, QualType Ty)

static bool	isRecordWithSSEVectorType (ASTContext &Context, QualType Ty)

static bool	isArgInAlloca (const ABIArgInfo &Info)

static bool	BitsContainNoUserData (QualType Ty, unsigned StartBit, unsigned EndBit, ASTContext &Context)
	BitsContainNoUserData - Return true if the specified [start,end) bit range is known to either be off the end of the specified type or being in alignment padding. More...

static bool	ContainsFloatAtOffset (llvm::Type *IRType, unsigned IROffset, const llvm::DataLayout &TD)
	ContainsFloatAtOffset - Return true if the specified LLVM IR type has a float member at the specified offset. More...

static llvm::Type *	GetX86_64ByValArgumentPair (llvm::Type Lo, llvm::Type Hi, const llvm::DataLayout &TD)
	GetX86_64ByValArgumentPair - Given a high and low type that can ideally be used as elements of a two register pair to pass or return, return a first class aggregate to represent them. More...

static Address	EmitX86_64VAArgFromMemory (CodeGenFunction &CGF, Address VAListAddr, QualType Ty)

static bool	PPC64_initDwarfEHRegSizeTable (CodeGen::CodeGenFunction &CGF, llvm::Value *Address)

static bool	isIntegerLikeType (QualType Ty, ASTContext &Context, llvm::LLVMContext &VMContext)

static bool	getTypeString (SmallStringEnc &Enc, const Decl *D, CodeGen::CodeGenModule &CGM, TypeStringCache &TSC)
	The XCore ABI includes a type information section that communicates symbol type information to the linker. More...

void	clang::CodeGen::computeSPIRKernelABIInfo (CodeGenModule &CGM, CGFunctionInfo &FI)

static bool	appendType (SmallStringEnc &Enc, QualType QType, const CodeGen::CodeGenModule &CGM, TypeStringCache &TSC)
	Handles the type's qualifier before dispatching a call to handle specific type encodings. More...

static bool	extractFieldType (SmallVectorImpl< FieldEncoding > &FE, const RecordDecl *RD, const CodeGen::CodeGenModule &CGM, TypeStringCache &TSC)
	Helper function for appendRecordType(). More...

static bool	appendRecordType (SmallStringEnc &Enc, const RecordType RT, const CodeGen::CodeGenModule &CGM, TypeStringCache &TSC, const IdentifierInfo ID)
	Appends structure and union types to Enc and adds encoding to cache. More...

static bool	appendEnumType (SmallStringEnc &Enc, const EnumType ET, TypeStringCache &TSC, const IdentifierInfo ID)
	Appends enum types to Enc and adds the encoding to the cache. More...

static void	appendQualifier (SmallStringEnc &Enc, QualType QT)
	Appends type's qualifier to Enc. More...

static bool	appendBuiltinType (SmallStringEnc &Enc, const BuiltinType *BT)
	Appends built-in types to Enc. More...

static bool	appendPointerType (SmallStringEnc &Enc, const PointerType *PT, const CodeGen::CodeGenModule &CGM, TypeStringCache &TSC)
	Appends a pointer encoding to Enc before calling appendType for the pointee. More...

static bool	appendArrayType (SmallStringEnc &Enc, QualType QT, const ArrayType *AT, const CodeGen::CodeGenModule &CGM, TypeStringCache &TSC, StringRef NoSizeEnc)
	Appends array encoding to Enc before calling appendType for the element. More...

static bool	appendFunctionType (SmallStringEnc &Enc, const FunctionType *FT, const CodeGen::CodeGenModule &CGM, TypeStringCache &TSC)
	Appends a function encoding to Enc, calling appendType for the return type and the arguments. More...

Enumeration Type Documentation

◆ anonymous enum

anonymous enum

Definition at line 966 of file TargetInfo.cpp.

◆ X86AVXABILevel

enum X86AVXABILevel

strong

The AVX ABI level for X86 targets.

Definition at line 2006 of file TargetInfo.cpp.

Function Documentation

◆ addBaseAndFieldSizes()

static bool addBaseAndFieldSizes	(	ASTContext &	Context,
		const CXXRecordDecl *	RD,
		uint64_t &	Size
	)

static

◆ addFieldSizes()

static bool addFieldSizes	(	ASTContext &	Context,
		const RecordDecl *	RD,
		uint64_t &	Size
	)

static

Definition at line 1269 of file TargetInfo.cpp.

References clang::RecordDecl::fields(), and is32Or64BitBasicType().

Referenced by addBaseAndFieldSizes().

◆ appendArrayType()

static bool appendArrayType	(	SmallStringEnc &	Enc,
		QualType	QT,
		const ArrayType *	AT,
		const CodeGen::CodeGenModule &	CGM,
		TypeStringCache &	TSC,
		StringRef	NoSizeEnc
	)

static

Appends array encoding to Enc before calling appendType for the element.

Definition at line 8744 of file TargetInfo.cpp.

References appendQualifier(), appendType(), clang::ArrayType::getElementType(), clang::ArrayType::getSizeModifier(), and clang::ArrayType::Normal.

Referenced by appendType(), and getTypeString().

◆ appendBuiltinType()

static bool appendBuiltinType	(	SmallStringEnc &	Enc,
		const BuiltinType *	BT
	)

static

Appends built-in types to Enc.

Definition at line 8674 of file TargetInfo.cpp.

References clang::BuiltinType::getKind().

Referenced by appendType().

◆ appendEnumType()

static bool appendEnumType	(	SmallStringEnc &	Enc,
		const EnumType *	ET,
		TypeStringCache &	TSC,
		const IdentifierInfo *	ID
	)

static

Appends enum types to Enc and adds the encoding to the cache.

Definition at line 8616 of file TargetInfo.cpp.

References clang::EnumType::getDecl(), clang::EnumDecl::getDefinition(), and clang::IdentifierInfo::getName().

Referenced by appendType().

◆ appendFunctionType()

static bool appendFunctionType	(	SmallStringEnc &	Enc,
		const FunctionType *	FT,
		const CodeGen::CodeGenModule &	CGM,
		TypeStringCache &	TSC
	)

static

Appends a function encoding to Enc, calling appendType for the return type and the arguments.

Definition at line 8766 of file TargetInfo.cpp.

References appendType(), clang::Type::getAs(), and clang::FunctionType::getReturnType().

Referenced by appendType().

◆ appendPointerType()

static bool appendPointerType	(	SmallStringEnc &	Enc,
		const PointerType *	PT,
		const CodeGen::CodeGenModule &	CGM,
		TypeStringCache &	TSC
	)

static

Appends a pointer encoding to Enc before calling appendType for the pointee.

Definition at line 8733 of file TargetInfo.cpp.

References appendType(), and clang::PointerType::getPointeeType().

Referenced by appendType().

◆ appendQualifier()

static void appendQualifier	(	SmallStringEnc &	Enc,
		QualType	QT
	)

static

Appends type's qualifier to Enc.

This is done prior to appending the type's encoding.

Definition at line 8660 of file TargetInfo.cpp.

References clang::QualType::isConstQualified(), clang::QualType::isRestrictQualified(), and clang::QualType::isVolatileQualified().

Referenced by appendArrayType(), and appendType().

◆ appendRecordType()

static bool appendRecordType	(	SmallStringEnc &	Enc,
		const RecordType *	RT,
		const CodeGen::CodeGenModule &	CGM,
		TypeStringCache &	TSC,
		const IdentifierInfo *	ID
	)

static

Appends structure and union types to Enc and adds encoding to cache.

Recursively calls appendType (via extractFieldType) for each field. Union types have their fields ordered according to the ABI.

Definition at line 8564 of file TargetInfo.cpp.

References extractFieldType(), clang::RecordDecl::field_empty(), clang::RecordType::getDecl(), clang::RecordDecl::getDefinition(), clang::IdentifierInfo::getName(), and clang::Type::isUnionType().

Referenced by appendType().

◆ appendType()

static bool appendType	(	SmallStringEnc &	Enc,
		QualType	QType,
		const CodeGen::CodeGenModule &	CGM,
		TypeStringCache &	TSC
	)

static

Handles the type's qualifier before dispatching a call to handle specific type encodings.

Definition at line 8800 of file TargetInfo.cpp.

References appendArrayType(), appendBuiltinType(), appendEnumType(), appendFunctionType(), appendPointerType(), appendQualifier(), appendRecordType(), clang::Type::getAs(), clang::Type::getAsArrayTypeUnsafe(), clang::Type::getAsStructureType(), clang::Type::getAsUnionType(), clang::QualType::getBaseTypeIdentifier(), and clang::QualType::getCanonicalType().

Referenced by appendArrayType(), appendFunctionType(), appendPointerType(), clang::CodeGen::computeSPIRKernelABIInfo(), extractFieldType(), and getTypeString().

◆ AssignToArrayRange()

static void AssignToArrayRange	(	CodeGen::CGBuilderTy &	Builder,
		llvm::Value *	Array,
		llvm::Value *	Value,
		unsigned	FirstIndex,
		unsigned	LastIndex
	)

static

Definition at line 62 of file TargetInfo.cpp.

◆ BitsContainNoUserData()

static bool BitsContainNoUserData	(	QualType	Ty,
		unsigned	StartBit,
		unsigned	EndBit,
		ASTContext &	Context
	)

static

BitsContainNoUserData - Return true if the specified [start,end) bit range is known to either be off the end of the specified type or being in alignment padding.

The user type specified is known to be at most 128 bits in size, and have passed through X86_64ABIInfo::classify with a successful classification that put one of the two halves in the INTEGER class.

It is conservatively correct to return false.

Definition at line 2974 of file TargetInfo.cpp.

References clang::ASTContext::getAsConstantArrayType(), and clang::ASTContext::getTypeSize().

Referenced by ContainsFloatAtOffset().

◆ classifyReturnType()

static bool classifyReturnType	(	const CGCXXABI &	CXXABI,
		CGFunctionInfo &	FI,
		const ABIInfo &	Info
	)

static

Definition at line 159 of file TargetInfo.cpp.

References clang::CodeGen::CGCXXABI::classifyReturnType(), clang::Type::getAs(), clang::CodeGen::ABIInfo::getNaturalAlignIndirect(), clang::CodeGen::CGFunctionInfo::getReturnInfo(), and clang::CodeGen::CGFunctionInfo::getReturnType().

Referenced by addBaseAndFieldSizes(), clang::CodeGen::CGCXXABI::canCallMismatchedFunctionType(), EmitX86_64VAArgFromMemory(), getTypeString(), GetX86_64ByValArgumentPair(), isDeletingDtor(), clang::CodeGen::ABIInfo::isHomogeneousAggregate(), and isRecordWithSSEVectorType().

◆ coerceToIntArray()

static ABIArgInfo coerceToIntArray	(	QualType	Ty,
		ASTContext &	Context,
		llvm::LLVMContext &	LLVMContext
	)

static

Definition at line 51 of file TargetInfo.cpp.

◆ ContainsFloatAtOffset()

static bool ContainsFloatAtOffset	(	llvm::Type *	IRType,
		unsigned	IROffset,
		const llvm::DataLayout &	TD
	)

static

ContainsFloatAtOffset - Return true if the specified LLVM IR type has a float member at the specified offset.

For example, {int,{float}} has a float at offset 4. It is conservatively correct for this routine to return false.

Definition at line 3055 of file TargetInfo.cpp.

References BitsContainNoUserData(), clang::CodeGen::ABIInfo::getContext(), clang::CodeGen::ABIInfo::getDataLayout(), clang::CharUnits::getQuantity(), clang::ASTContext::getTypeSizeInChars(), clang::CodeGen::ABIInfo::getVMContext(), min(), and clang::CodeGen::Type.

◆ emitMergePHI()

static Address emitMergePHI	(	CodeGenFunction &	CGF,
		Address	Addr1,
		llvm::BasicBlock *	Block1,
		Address	Addr2,
		llvm::BasicBlock *	Block2,
		const llvm::Twine &	Name = `""`
	)

static

Definition at line 375 of file TargetInfo.cpp.

Referenced by EmitX86_64VAArgFromMemory().

◆ emitRoundPointerUpToAlignment()

static llvm::Value* emitRoundPointerUpToAlignment	(	CodeGenFunction &	CGF,
		llvm::Value *	Ptr,
		CharUnits	Align
	)

static

Definition at line 258 of file TargetInfo.cpp.

References clang::CodeGen::CodeGenFunction::Builder, clang::CharUnits::getQuantity(), and clang::CodeGen::CodeGenTypeCache::IntPtrTy.

Referenced by emitVoidPtrDirectVAArg(), and EmitX86_64VAArgFromMemory().

◆ emitVoidPtrDirectVAArg()

static Address emitVoidPtrDirectVAArg	(	CodeGenFunction &	CGF,
		Address	VAListAddr,
		llvm::Type *	DirectTy,
		CharUnits	DirectSize,
		CharUnits	DirectAlign,
		CharUnits	SlotSize,
		bool	AllowHigherAlign
	)

static

Emit va_arg for a platform using the common void* representation, where arguments are simply emitted in an array of slots on the stack.

This version implements the core direct-value passing rules.

Parameters

SlotSize	- The size and alignment of a stack slot. Each argument will be allocated to a multiple of this number of slots, and all the slots will be aligned to this value.
AllowHigherAlign	- The slot alignment is not a cap; an argument type with an alignment greater than the slot size will be emitted on a higher-alignment address, potentially leaving one or more empty slots behind as padding. If this is false, the returned address might be less-aligned than DirectAlign.

Definition at line 288 of file TargetInfo.cpp.

References clang::CharUnits::alignTo(), clang::CodeGen::CodeGenFunction::Builder, clang::CodeGen::CodeGenFunction::CGM, clang::CodeGen::CGBuilderTy::CreateConstInBoundsByteGEP(), clang::CodeGen::CGBuilderTy::CreateElementBitCast(), clang::CodeGen::CGBuilderTy::CreateLoad(), clang::CodeGen::CGBuilderTy::CreateStore(), emitRoundPointerUpToAlignment(), clang::CodeGen::CodeGenModule::getDataLayout(), clang::CodeGen::Address::getElementType(), clang::CodeGen::Address::getPointer(), clang::CodeGen::CodeGenTypeCache::Int8PtrTy, and clang::CodeGen::Address::invalid().

Referenced by emitVoidPtrVAArg(), and clang::CodeGen::ABIInfo::isHomogeneousAggregate().

◆ emitVoidPtrVAArg()

static Address emitVoidPtrVAArg	(	CodeGenFunction &	CGF,
		Address	VAListAddr,
		QualType	ValueTy,
		bool	IsIndirect,
		std::pair< CharUnits, CharUnits >	ValueInfo,
		CharUnits	SlotSizeAndAlign,
		bool	AllowHigherAlign
	)

static

Emit va_arg for a platform using the common void* representation, where arguments are simply emitted in an array of slots on the stack.

Parameters

IsIndirect	- Values of this type are passed indirectly.
ValueInfo	- The size and alignment of this type, generally computed with getContext().getTypeInfoInChars(ValueTy).
SlotSizeAndAlign	- The size and alignment of a stack slot. Each argument will be allocated to a multiple of this number of slots, and all the slots will be aligned to this value.
AllowHigherAlign	- The slot alignment is not a cap; an argument type with an alignment greater than the slot size will be emitted on a higher-alignment address, potentially leaving one or more empty slots behind as padding.

Definition at line 342 of file TargetInfo.cpp.

References clang::CodeGen::CodeGenFunction::Builder, clang::CodeGen::CodeGenFunction::ConvertTypeForMem(), clang::CodeGen::CGBuilderTy::CreateLoad(), emitVoidPtrDirectVAArg(), clang::CodeGen::CodeGenTypeCache::getPointerAlign(), clang::CodeGen::CodeGenTypeCache::getPointerSize(), and clang::CodeGen::Type.

Referenced by EmitX86_64VAArgFromMemory(), getTypeString(), isArgInAlloca(), and clang::CodeGen::ABIInfo::isHomogeneousAggregate().

◆ EmitX86_64VAArgFromMemory()

static Address EmitX86_64VAArgFromMemory	(	CodeGenFunction &	CGF,
		Address	VAListAddr,
		QualType	Ty
	)

static

Definition at line 3617 of file TargetInfo.cpp.

◆ extractFieldType()

static bool extractFieldType	(	SmallVectorImpl< FieldEncoding > &	FE,
		const RecordDecl *	RD,
		const CodeGen::CodeGenModule &	CGM,
		TypeStringCache &	TSC
	)

static

Helper function for appendRecordType().

Builds a SmallVector containing the encoded field types in declaration order.

Definition at line 8536 of file TargetInfo.cpp.

References appendType(), clang::RecordDecl::fields(), and clang::CodeGen::CodeGenModule::getContext().

Referenced by appendRecordType().

◆ getRecordArgABI() [1/2]

static CGCXXABI::RecordArgABI getRecordArgABI	(	const RecordType *	RT,
		CGCXXABI &	CXXABI
	)

static

Definition at line 140 of file TargetInfo.cpp.

References clang::RecordDecl::canPassInRegisters(), clang::RecordType::getDecl(), clang::CodeGen::CGCXXABI::getRecordArgABI(), clang::CodeGen::CGCXXABI::RAA_Default, and clang::CodeGen::CGCXXABI::RAA_Indirect.

Referenced by EmitX86_64VAArgFromMemory(), getRecordArgABI(), getTypeString(), GetX86_64ByValArgumentPair(), clang::CodeGen::ABIInfo::isHomogeneousAggregate(), and isRecordWithSSEVectorType().

◆ getRecordArgABI() [2/2]

static CGCXXABI::RecordArgABI getRecordArgABI	(	QualType	T,
		CGCXXABI &	CXXABI
	)

static

Definition at line 151 of file TargetInfo.cpp.

References clang::Type::getAs(), getRecordArgABI(), and clang::CodeGen::CGCXXABI::RAA_Default.

◆ getTypeString()

static bool getTypeString	(	SmallStringEnc &	Enc,
		const Decl *	D,
		CodeGen::CodeGenModule &	CGM,
		TypeStringCache &	TSC
	)

static

The XCore ABI includes a type information section that communicates symbol type information to the linker.

The linker uses this information to verify safety/correctness of things such as array bound and pointers et al. The ABI only requires C (and XC) language modules to emit TypeStrings. This type information (TypeString) is emitted into meta data for all global symbols: definitions, declarations, functions & variables.

The TypeString carries type, qualifier, name, size & value details. Please see 'Tools Development Guide' section 2.16.2 for format details: https://www.xmos.com/download/public/Tools-Development-Guide%28X9114A%29.pdf The output is tested by test/CodeGen/xcore-stringtype.c.

Definition at line 8834 of file TargetInfo.cpp.

◆ GetX86_64ByValArgumentPair()

static llvm::Type* GetX86_64ByValArgumentPair	(	llvm::Type *	Lo,
		llvm::Type *	Hi,
		const llvm::DataLayout &	TD
	)

static

GetX86_64ByValArgumentPair - Given a high and low type that can ideally be used as elements of a two register pair to pass or return, return a first class aggregate to represent them.

For example, if the low part of a by-value argument should be passed as i32* and the high part as float, return {i32*, float}.

Definition at line 3187 of file TargetInfo.cpp.

◆ is32Or64BitBasicType()

static bool is32Or64BitBasicType	(	QualType	Ty,
		ASTContext &	Context
	)

static

Definition at line 1253 of file TargetInfo.cpp.

References clang::Type::getAs(), clang::ASTContext::getTypeSize(), clang::Type::hasPointerRepresentation(), clang::Type::isBlockPointerType(), and clang::Type::isEnumeralType().

Referenced by addFieldSizes().

◆ isAggregateTypeForABI()

static bool isAggregateTypeForABI ( QualType T )

static

Definition at line 75 of file TargetInfo.cpp.

References clang::CodeGen::CodeGenFunction::hasScalarEvaluationKind(), and clang::Type::isMemberFunctionPointerType().

Referenced by addBaseAndFieldSizes(), EmitX86_64VAArgFromMemory(), getTypeString(), clang::CodeGen::ABIInfo::isHomogeneousAggregate(), and isRecordWithSSEVectorType().

◆ isArgInAlloca()

static bool isArgInAlloca ( const ABIArgInfo & Info )

static

Definition at line 1834 of file TargetInfo.cpp.

◆ isEmptyField()

static bool isEmptyField	(	ASTContext &	Context,
		const FieldDecl *	FD,
		bool	AllowArrays
	)

static

isEmptyField - Return true iff a the field is "empty", that is it is an unnamed bit-field or an (array of) empty record(s).

Definition at line 475 of file TargetInfo.cpp.

References clang::Type::getAs(), clang::ASTContext::getAsConstantArrayType(), clang::RecordType::getDecl(), clang::ValueDecl::getType(), isEmptyRecord(), and clang::FieldDecl::isUnnamedBitfield().

Referenced by isEmptyRecord().

◆ isEmptyRecord()

static bool isEmptyRecord	(	ASTContext &	Context,
		QualType	T,
		bool	AllowArrays
	)

static

isEmptyRecord - Return true iff a structure contains only empty fields.

Note that a structure with a flexible array member is not considered empty.

Definition at line 508 of file TargetInfo.cpp.

References clang::RecordDecl::fields(), clang::Type::getAs(), clang::RecordType::getDecl(), clang::RecordDecl::hasFlexibleArrayMember(), and isEmptyField().

Referenced by addBaseAndFieldSizes(), getTypeString(), isEmptyField(), clang::CodeGen::ABIInfo::isHomogeneousAggregate(), isRecordWithSSEVectorType(), and isSingleElementStruct().

◆ isIntegerLikeType()

static bool isIntegerLikeType	(	QualType	Ty,
		ASTContext &	Context,
		llvm::LLVMContext &	VMContext
	)

static

Definition at line 5882 of file TargetInfo.cpp.

References clang::Type::getAs(), clang::ASTContext::getTypeSize(), clang::Type::isPointerType(), clang::Type::isRealFloatingType(), and clang::Type::isVectorType().

◆ isRecordWithSSEVectorType()

static bool isRecordWithSSEVectorType	(	ASTContext &	Context,
		QualType	Ty
	)

static

Definition at line 1435 of file TargetInfo.cpp.

◆ isSingleElementStruct()

static const Type* isSingleElementStruct	(	QualType	T,
		ASTContext &	Context
	)

static

isSingleElementStruct - Determine if a structure is a "single element struct", i.e.

it has exactly one non-empty field or exactly one field which is itself a single element struct. Structures with flexible array members are never considered single element structs.

Returns: The field declaration for the single non-empty field, if it exists.

Definition at line 536 of file TargetInfo.cpp.

References clang::Type::getAs(), clang::RecordType::getDecl(), clang::RecordDecl::hasFlexibleArrayMember(), and isEmptyRecord().

Referenced by addBaseAndFieldSizes(), EmitX86_64VAArgFromMemory(), and isRecordWithSSEVectorType().

◆ isSSEVectorType()

static bool isSSEVectorType	(	ASTContext &	Context,
		QualType	Ty
	)

static

Definition at line 1431 of file TargetInfo.cpp.

References clang::Type::getAs(), and clang::ASTContext::getTypeSize().

Referenced by isRecordWithSSEVectorType().

◆ occupiesMoreThan()

static bool occupiesMoreThan	(	CodeGenTypes &	cgt,
		ArrayRef< llvm::Type *>	scalarTypes,
		unsigned	maxAllRegisters
	)

static

Does the given lowering require more than the given number of registers when expanded?

This is intended to be the basis of a reasonable basic implementation of should{Pass,Return}IndirectlyForSwift.

For most targets, a limit of four total registers is reasonable; this limits the amount of code required in order to move around the value in case it wasn't produced immediately prior to the call by the caller (or wasn't produced in exactly the right registers) or isn't used immediately within the callee. But some targets may need to further limit the register count due to an inability to support that many return registers.

Definition at line 113 of file TargetInfo.cpp.

References clang::TargetInfo::getPointerWidth(), clang::CodeGen::CodeGenTypes::getTarget(), and clang::CodeGen::Type.

◆ PPC64_initDwarfEHRegSizeTable()

static bool PPC64_initDwarfEHRegSizeTable	(	CodeGen::CodeGenFunction &	CGF,
		llvm::Value *	Address
	)

static

Definition at line 4828 of file TargetInfo.cpp.

◆ rewriteInputConstraintReferences()

static void rewriteInputConstraintReferences	(	unsigned	FirstIn,
		unsigned	NumNewOuts,
		std::string &	AsmString
	)

static

Rewrite input constraint references after adding some output constraints.

In the case where there is one output and one input and we add one output, we need to replace all operand references greater than or equal to 1: mov $0, $1 mov eax, $1 The result will be: mov $0, $2 mov eax, $2

Definition at line 1131 of file TargetInfo.cpp.

References clang::CodeGen::CodeGenFunction::Builder, clang::CodeGen::CGBuilderTy::CreateBitCast(), clang::CodeGen::LValue::getAddress(), clang::Type::getAs(), clang::ASTContext::getAsConstantArrayType(), clang::CodeGen::CodeGenFunction::getContext(), clang::CodeGen::CodeGenFunction::getLLVMContext(), clang::CodeGen::LValue::getType(), clang::ASTContext::getTypeSize(), clang::Type::hasPointerRepresentation(), clang::CodeGen::CodeGenTypeCache::Int32Ty, clang::CodeGen::CodeGenTypeCache::Int64Ty, clang::Type::isAnyComplexType(), clang::Type::isBlockPointerType(), clang::Type::isEnumeralType(), clang::Type::isMemberPointerType(), clang::Type::isVectorType(), clang::CodeGen::LValue::setAddress(), and clang::CodeGen::Type.

◆ useFirstFieldIfTransparentUnion()

static QualType useFirstFieldIfTransparentUnion ( QualType Ty )

static

Pass transparent unions as if they were the type of the first element.

Sema should ensure that all elements of the union have the same "machine type".

Definition at line 175 of file TargetInfo.cpp.

References clang::RecordDecl::field_begin(), clang::RecordDecl::field_empty(), clang::Type::getAsUnionType(), and clang::Decl::hasAttr().

Referenced by getTypeString(), GetX86_64ByValArgumentPair(), clang::CodeGen::ABIInfo::isHomogeneousAggregate(), and isRecordWithSSEVectorType().

Namespaces

Enumerations

Functions

Enumeration Type Documentation

◆ anonymous enum

◆ X86AVXABILevel

Function Documentation

◆ addBaseAndFieldSizes()

◆ addFieldSizes()

◆ appendArrayType()

◆ appendBuiltinType()

◆ appendEnumType()

◆ appendFunctionType()

◆ appendPointerType()

◆ appendQualifier()

◆ appendRecordType()

◆ appendType()

◆ AssignToArrayRange()

◆ BitsContainNoUserData()

◆ classifyReturnType()

◆ coerceToIntArray()

◆ ContainsFloatAtOffset()

◆ emitMergePHI()

◆ emitRoundPointerUpToAlignment()

◆ emitVoidPtrDirectVAArg()

◆ emitVoidPtrVAArg()

◆ EmitX86_64VAArgFromMemory()

◆ extractFieldType()

◆ getRecordArgABI() [1/2]

◆ getRecordArgABI() [2/2]

◆ getTypeString()

◆ GetX86_64ByValArgumentPair()

◆ is32Or64BitBasicType()

◆ isAggregateTypeForABI()

◆ isArgInAlloca()

◆ isEmptyField()

◆ isEmptyRecord()

◆ isIntegerLikeType()

◆ isRecordWithSSEVectorType()

◆ isSingleElementStruct()

◆ isSSEVectorType()

◆ occupiesMoreThan()

◆ PPC64_initDwarfEHRegSizeTable()

◆ rewriteInputConstraintReferences()

◆ useFirstFieldIfTransparentUnion()