#include "llvm/ABI/TargetInfo.h"

Inheritance diagram for llvm::abi::TargetInfo:

Public Member Functions
	TargetInfo (TypeBuilder &Builder)
virtual	~TargetInfo ()=default
virtual void	computeInfo (FunctionInfo &FI) const =0
	Populate FI with the target's ABI-lowering decisions for each argument and return value.
virtual bool	isPassByRef (const Type *Ty) const
virtual const ABICompatInfo &	getABICompatInfo () const =0
	Return this target's ABI compatibility flags.
virtual unsigned	getAllocaAddrSpace () const
	Address space in which indirect arguments are allocated (the target's alloca/stack space).
virtual bool	hasInt128Type () const
	Whether the target has a 128-bit integer type. Default true.
virtual unsigned	getLongLongWidth () const
	Width of long long in bits. Default 64.

Protected Member Functions
LLVM_ABI RecordArgABI	getRecordArgABI (const RecordType *RT) const
LLVM_ABI RecordArgABI	getRecordArgABI (const Type *Ty) const
LLVM_ABI bool	isPromotableInteger (const IntegerType *IT) const
unsigned	getBitIntRegThreshold () const
	Bit width above which a _BitInt cannot stay in registers.
LLVM_ABI ArgInfo	getNaturalAlignIndirect (const Type *Ty, unsigned AddrSpace, bool ByVal=true) const
LLVM_ABI bool	isAggregateTypeForABI (const Type *Ty) const
LLVM_ABI const Type *	useFirstFieldIfTransparentUnion (const Type *Ty) const
	If Ty is a transparent union, return its first field type; otherwise return Ty unchanged.
LLVM_ABI const Type *	isSingleElementStruct (const Type *Ty) const
	Returns the scalar a single-element struct reduces to, else null.
LLVM_ABI bool	maybeCommonClassifyReturnType (FunctionInfo &FI) const
	Apply rules for classifying return types that are common to all targets.
virtual bool	isHomogeneousAggregateBaseType (const Type *Ty) const
	Return true if `Ty` is a valid base type for a homogeneous aggregate.
virtual bool	isHomogeneousAggregateSmallEnough (const Type *Base, uint64_t Members) const
	Return true if a homogeneous aggregate with `Members` copies of `Base` is small enough to be passed in registers for this ABI.
virtual bool	isZeroLengthBitfieldPermittedInHomogeneousAggregate () const
	Return true if zero-length bitfields should be ignored when deciding whether an aggregate is homogeneous.
virtual bool	isPermittedToBeHomogeneousAggregate (const RecordType *RT) const
	Return true if the C++ ABI permits `RT` to be a homogeneous aggregate.
LLVM_ABI bool	isHomogeneousAggregate (const Type Ty, const Type &Base, uint64_t &Members) const
	Return true if `Ty` is an ELFv2-style homogeneous aggregate.

Protected Attributes
TypeBuilder &	TB

Detailed Description

Definition at line 65 of file TargetInfo.h.

Constructor & Destructor Documentation

◆ TargetInfo()

llvm::abi::TargetInfo::TargetInfo ( TypeBuilder & Builder )

inlineexplicit

Definition at line 70 of file TargetInfo.h.

References TB.

Referenced by llvm::abi::AArch64TargetInfo::AArch64TargetInfo(), llvm::abi::BPFTargetInfo::BPFTargetInfo(), and llvm::abi::X86_64TargetInfo::X86_64TargetInfo().

◆ ~TargetInfo()

virtual llvm::abi::TargetInfo::~TargetInfo ( )

virtualdefault

Member Function Documentation

◆ computeInfo()

virtual void llvm::abi::TargetInfo::computeInfo ( FunctionInfo & FI ) const

pure virtual

Populate FI with the target's ABI-lowering decisions for each argument and return value.

Implemented in llvm::abi::AArch64TargetInfo, llvm::abi::BPFTargetInfo, and llvm::abi::DefaultTargetInfo.

◆ getABICompatInfo()

virtual const ABICompatInfo & llvm::abi::TargetInfo::getABICompatInfo ( ) const

pure virtual

Return this target's ABI compatibility flags.

Targets with extra flags store a derived object and return that as an ABICompatInfo reference.

Implemented in llvm::abi::AArch64TargetInfo, llvm::abi::BPFTargetInfo, and llvm::abi::X86_64TargetInfo.

Referenced by isHomogeneousAggregate().

◆ getAllocaAddrSpace()

virtual unsigned llvm::abi::TargetInfo::getAllocaAddrSpace ( ) const

inlinevirtual

Address space in which indirect arguments are allocated (the target's alloca/stack space).

Definition at line 85 of file TargetInfo.h.

Referenced by llvm::abi::DefaultTargetInfo::classifyArgumentType(), and llvm::abi::DefaultTargetInfo::classifyReturnType().

◆ getBitIntRegThreshold()

unsigned llvm::abi::TargetInfo::getBitIntRegThreshold ( ) const

inlineprotected

Bit width above which a _BitInt cannot stay in registers.

Definition at line 99 of file TargetInfo.h.

References getLongLongWidth(), and hasInt128Type().

Referenced by llvm::abi::DefaultTargetInfo::classifyArgumentType(), and llvm::abi::DefaultTargetInfo::classifyReturnType().

◆ getLongLongWidth()

virtual unsigned llvm::abi::TargetInfo::getLongLongWidth ( ) const

inlinevirtual

Width of long long in bits. Default 64.

Definition at line 91 of file TargetInfo.h.

Referenced by getBitIntRegThreshold().

◆ getNaturalAlignIndirect()

ArgInfo TargetInfo::getNaturalAlignIndirect	(	const Type *	Ty,
		unsigned	AddrSpace,
		bool	ByVal = true ) const

protected

Definition at line 44 of file TargetInfo.cpp.

References llvm::abi::ArgInfo::getIndirect().

Referenced by llvm::abi::DefaultTargetInfo::classifyArgumentType(), and llvm::abi::DefaultTargetInfo::classifyReturnType().

◆ getRecordArgABI() [1/2]

RecordArgABI TargetInfo::getRecordArgABI ( const RecordType * RT ) const

protected

Definition at line 49 of file TargetInfo.cpp.

References llvm::abi::RecordType::canPassInRegisters(), llvm::abi::RAA_Default, and llvm::abi::RAA_Indirect.

Referenced by llvm::abi::DefaultTargetInfo::classifyArgumentType(), and getRecordArgABI().

◆ getRecordArgABI() [2/2]

RecordArgABI TargetInfo::getRecordArgABI ( const Type * Ty ) const

protected

Definition at line 55 of file TargetInfo.cpp.

References llvm::dyn_cast(), getRecordArgABI(), and llvm::abi::RAA_Default.

◆ hasInt128Type()

virtual bool llvm::abi::TargetInfo::hasInt128Type ( ) const

inlinevirtual

Whether the target has a 128-bit integer type. Default true.

Definition at line 88 of file TargetInfo.h.

Referenced by getBitIntRegThreshold().

◆ isAggregateTypeForABI()

bool TargetInfo::isAggregateTypeForABI ( const Type * Ty ) const

protected

Definition at line 17 of file TargetInfo.cpp.

References llvm::dyn_cast(), and isAggregateTypeForABI().

Referenced by llvm::abi::DefaultTargetInfo::classifyArgumentType(), llvm::abi::DefaultTargetInfo::classifyReturnType(), isAggregateTypeForABI(), and isSingleElementStruct().

◆ isHomogeneousAggregate()

bool TargetInfo::isHomogeneousAggregate	(	const Type *	Ty,
		const Type *&	Base,
		uint64_t &	Members ) const

protected

Return true if Ty is an ELFv2-style homogeneous aggregate.

Base is set to the base element type and Members to the number of base elements.

Definition at line 152 of file TargetInfo.cpp.

References assert(), llvm::sampleprof::Base, llvm::dyn_cast(), getABICompatInfo(), llvm::ElementCount::getFixed(), llvm::abi::Type::isEmptyRecord(), isHomogeneousAggregate(), isHomogeneousAggregateBaseType(), isHomogeneousAggregateSmallEnough(), llvm::abi::ABICompatInfo::IsMatrixHA, isPermittedToBeHomogeneousAggregate(), isZeroLengthBitfieldPermittedInHomogeneousAggregate(), and TB.

Referenced by isHomogeneousAggregate().

◆ isHomogeneousAggregateBaseType()

virtual bool llvm::abi::TargetInfo::isHomogeneousAggregateBaseType ( const Type * Ty ) const

inlineprotectedvirtual

Return true if Ty is a valid base type for a homogeneous aggregate.

Definition at line 117 of file TargetInfo.h.

Referenced by isHomogeneousAggregate().

◆ isHomogeneousAggregateSmallEnough()

virtual bool llvm::abi::TargetInfo::isHomogeneousAggregateSmallEnough	(	const Type *	Base,
		uint64_t	Members ) const

inlineprotectedvirtual

Return true if a homogeneous aggregate with Members copies of Base is small enough to be passed in registers for this ABI.

Definition at line 123 of file TargetInfo.h.

References llvm::sampleprof::Base, and uint64_t.

Referenced by isHomogeneousAggregate().

◆ isPassByRef()

virtual bool llvm::abi::TargetInfo::isPassByRef ( const Type * Ty ) const

inlinevirtual

Definition at line 77 of file TargetInfo.h.

◆ isPermittedToBeHomogeneousAggregate()

virtual bool llvm::abi::TargetInfo::isPermittedToBeHomogeneousAggregate ( const RecordType * RT ) const

inlineprotectedvirtual

Return true if the C++ ABI permits RT to be a homogeneous aggregate.

Definition at line 135 of file TargetInfo.h.

Referenced by isHomogeneousAggregate().

◆ isPromotableInteger()

bool TargetInfo::isPromotableInteger ( const IntegerType * IT ) const

protected

Definition at line 37 of file TargetInfo.cpp.

References llvm::BitWidth, and IT.

Referenced by llvm::abi::DefaultTargetInfo::classifyArgumentType(), and llvm::abi::DefaultTargetInfo::classifyReturnType().

◆ isSingleElementStruct()

const Type * TargetInfo::isSingleElementStruct ( const Type * Ty ) const

protected

Returns the scalar a single-element struct reduces to, else null.

Definition at line 75 of file TargetInfo.cpp.

References llvm::sampleprof::Base, llvm::dyn_cast(), llvm::abi::Type::getSizeInBits(), isAggregateTypeForABI(), and isSingleElementStruct().

Referenced by isSingleElementStruct().

◆ isZeroLengthBitfieldPermittedInHomogeneousAggregate()

virtual bool llvm::abi::TargetInfo::isZeroLengthBitfieldPermittedInHomogeneousAggregate ( ) const

inlineprotectedvirtual

Return true if zero-length bitfields should be ignored when deciding whether an aggregate is homogeneous.

Definition at line 130 of file TargetInfo.h.

Referenced by isHomogeneousAggregate().

◆ maybeCommonClassifyReturnType()

bool TargetInfo::maybeCommonClassifyReturnType ( FunctionInfo & FI ) const

protected

Apply rules for classifying return types that are common to all targets.

Definition at line 132 of file TargetInfo.cpp.

References llvm::dyn_cast(), llvm::abi::ArgInfo::getIndirect(), llvm::abi::FunctionInfo::getReturnInfo(), and llvm::abi::FunctionInfo::getReturnType().

Referenced by llvm::abi::AArch64TargetInfo::computeInfo(), and llvm::abi::DefaultTargetInfo::computeInfo().

◆ useFirstFieldIfTransparentUnion()

const Type * TargetInfo::useFirstFieldIfTransparentUnion ( const Type * Ty ) const

protected

If Ty is a transparent union, return its first field type; otherwise return Ty unchanged.

Definition at line 64 of file TargetInfo.cpp.

References assert(), and llvm::dyn_cast().

Referenced by llvm::abi::DefaultTargetInfo::classifyArgumentType().

Member Data Documentation

◆ TB

TypeBuilder& llvm::abi::TargetInfo::TB

protected

Definition at line 67 of file TargetInfo.h.

Referenced by llvm::abi::AArch64TargetInfo::AArch64TargetInfo(), isHomogeneousAggregate(), and TargetInfo().

The documentation for this class was generated from the following files:

include/llvm/ABI/TargetInfo.h
lib/ABI/TargetInfo.cpp

Public Member Functions

Protected Member Functions

Protected Attributes

Detailed Description

Constructor & Destructor Documentation

◆ TargetInfo()

◆ ~TargetInfo()

Member Function Documentation

◆ computeInfo()

◆ getABICompatInfo()

◆ getAllocaAddrSpace()

◆ getBitIntRegThreshold()

◆ getLongLongWidth()

◆ getNaturalAlignIndirect()

◆ getRecordArgABI() [1/2]

◆ getRecordArgABI() [2/2]

◆ hasInt128Type()

◆ isAggregateTypeForABI()

◆ isHomogeneousAggregate()

◆ isHomogeneousAggregateBaseType()

◆ isHomogeneousAggregateSmallEnough()

◆ isPassByRef()

◆ isPermittedToBeHomogeneousAggregate()

◆ isPromotableInteger()

◆ isSingleElementStruct()

◆ isZeroLengthBitfieldPermittedInHomogeneousAggregate()

◆ maybeCommonClassifyReturnType()

◆ useFirstFieldIfTransparentUnion()

Member Data Documentation

◆ TB