llvm::MCSubtargetInfo Class Reference

Generic base class for all target subtargets. More...

#include "llvm/MC/MCSubtargetInfo.h"

Inheritance diagram for llvm::MCSubtargetInfo:

Public Types
enum	HwModeType { HwMode_Default , HwMode_ValueType , HwMode_RegInfo , HwMode_EncodingInfo }
	HwMode IDs are stored and accessed in a bit set format, enabling users to efficiently retrieve specific IDs, such as the RegInfo HwMode ID, from the set as required. More...

Public Member Functions
	MCSubtargetInfo (const MCSubtargetInfo &)=default
	MCSubtargetInfo (const Triple &TT, StringRef CPU, StringRef TuneCPU, StringRef FS, ArrayRef< SubtargetFeatureKV > PF, ArrayRef< SubtargetSubTypeKV > PD, const MCWriteProcResEntry *WPR, const MCWriteLatencyEntry *WL, const MCReadAdvanceEntry *RA, const InstrStage *IS, const unsigned *OC, const unsigned *FP)
	MCSubtargetInfo ()=delete
MCSubtargetInfo &	operator= (const MCSubtargetInfo &)=delete
MCSubtargetInfo &	operator= (MCSubtargetInfo &&)=delete
virtual	~MCSubtargetInfo ()=default
const Triple &	getTargetTriple () const
StringRef	getCPU () const
StringRef	getTuneCPU () const
const FeatureBitset &	getFeatureBits () const
void	setFeatureBits (const FeatureBitset &FeatureBits_)
StringRef	getFeatureString () const
bool	hasFeature (unsigned Feature) const
void	setDefaultFeatures (StringRef CPU, StringRef TuneCPU, StringRef FS)
	Set the features to the default for the given CPU and TuneCPU, with ano appended feature string.
FeatureBitset	ToggleFeature (uint64_t FB)
	Toggle a feature and return the re-computed feature bits.
FeatureBitset	ToggleFeature (const FeatureBitset &FB)
	Toggle a feature and return the re-computed feature bits.
FeatureBitset	ToggleFeature (StringRef FS)
	Toggle a set of features and return the re-computed feature bits.
FeatureBitset	ApplyFeatureFlag (StringRef FS)
	Apply a feature flag and return the re-computed feature bits, including all feature bits implied by the flag.
FeatureBitset	SetFeatureBitsTransitively (const FeatureBitset &FB)
	Set/clear additional feature bits, including all other bits they imply.
FeatureBitset	ClearFeatureBitsTransitively (const FeatureBitset &FB)
bool	checkFeatures (StringRef FS) const
	Check whether the subtarget features are enabled/disabled as per the provided string, ignoring all other features.
const MCSchedModel &	getSchedModelForCPU (StringRef CPU) const
	Get the machine model of a CPU.
const MCSchedModel &	getSchedModel () const
	Get the machine model for this subtarget's CPU.
const MCWriteProcResEntry *	getWriteProcResBegin (const MCSchedClassDesc *SC) const
	Return an iterator at the first process resource consumed by the given scheduling class.
const MCWriteProcResEntry *	getWriteProcResEnd (const MCSchedClassDesc *SC) const
const MCWriteLatencyEntry *	getWriteLatencyEntry (const MCSchedClassDesc *SC, unsigned DefIdx) const
int	getReadAdvanceCycles (const MCSchedClassDesc *SC, unsigned UseIdx, unsigned WriteResID) const
ArrayRef< MCReadAdvanceEntry >	getReadAdvanceEntries (const MCSchedClassDesc &SC) const
	Return the set of ReadAdvance entries declared by the scheduling class descriptor in input.
InstrItineraryData	getInstrItineraryForCPU (StringRef CPU) const
	Get scheduling itinerary of a CPU.
void	initInstrItins (InstrItineraryData &InstrItins) const
	Initialize an InstrItineraryData instance.
virtual unsigned	resolveVariantSchedClass (unsigned SchedClass, const MCInst *MI, const MCInstrInfo *MCII, unsigned CPUID) const
	Resolve a variant scheduling class for the given MCInst and CPU.
virtual bool	isCPUStringValid (StringRef CPU) const
	Check whether the CPU string is valid.
ArrayRef< SubtargetSubTypeKV >	getAllProcessorDescriptions () const
	Return processor descriptions.
ArrayRef< SubtargetFeatureKV >	getAllProcessorFeatures () const
	Return processor features.
std::vector< SubtargetFeatureKV >	getEnabledProcessorFeatures () const
	Return the list of processor features currently enabled.
virtual unsigned	getHwModeSet () const
	Return a bit set containing all HwMode IDs of the current subtarget.
virtual unsigned	getHwMode (enum HwModeType type=HwMode_Default) const
	HwMode ID corresponding to the 'type' parameter is retrieved from the HwMode bit set of the current subtarget.
virtual std::optional< unsigned >	getCacheSize (unsigned Level) const
	Return the cache size in bytes for the given level of cache.
virtual std::optional< unsigned >	getCacheAssociativity (unsigned Level) const
	Return the cache associatvity for the given level of cache.
virtual std::optional< unsigned >	getCacheLineSize (unsigned Level) const
	Return the target cache line size in bytes at a given level.
virtual unsigned	getCacheLineSize () const
	Return the target cache line size in bytes.
virtual unsigned	getPrefetchDistance () const
	Return the preferred prefetch distance in terms of instructions.
virtual unsigned	getMaxPrefetchIterationsAhead () const
	Return the maximum prefetch distance in terms of loop iterations.
virtual bool	enableWritePrefetching () const
virtual unsigned	getMinPrefetchStride (unsigned NumMemAccesses, unsigned NumStridedMemAccesses, unsigned NumPrefetches, bool HasCall) const
	Return the minimum stride necessary to trigger software prefetching.
virtual bool	shouldPrefetchAddressSpace (unsigned AS) const

Protected Member Functions
void	InitMCProcessorInfo (StringRef CPU, StringRef TuneCPU, StringRef FS)
	Initialize the scheduling model and feature bits.

Detailed Description

Generic base class for all target subtargets.

Definition at line 76 of file MCSubtargetInfo.h.

Member Enumeration Documentation

HwModeType

enum llvm::MCSubtargetInfo::HwModeType

HwMode IDs are stored and accessed in a bit set format, enabling users to efficiently retrieve specific IDs, such as the RegInfo HwMode ID, from the set as required.

Using this approach, various types of HwMode IDs can be added to a subtarget to manage different attributes within that subtarget, significantly enhancing the scalability and usability of HwMode. Moreover, to ensure compatibility, this method also supports controlling multiple attributes with a single HwMode ID, just as was done previously.

Enumerator
HwMode_Default
HwMode_ValueType
HwMode_RegInfo
HwMode_EncodingInfo

Definition at line 254 of file MCSubtargetInfo.h.

Constructor & Destructor Documentation

MCSubtargetInfo() [1/3]

llvm::MCSubtargetInfo::MCSubtargetInfo ( const MCSubtargetInfo &  )

default

MCSubtargetInfo() [2/3]

MCSubtargetInfo::MCSubtargetInfo	(	const Triple &	TT,
		StringRef	CPU,
		StringRef	TuneCPU,
		StringRef	FS,
		ArrayRef< SubtargetFeatureKV >	PF,
		ArrayRef< SubtargetSubTypeKV >	PD,
		const MCWriteProcResEntry *	WPR,
		const MCWriteLatencyEntry *	WL,
		const MCReadAdvanceEntry *	RA,
		const InstrStage *	IS,
		const unsigned *	OC,
		const unsigned *	FP
	)

Definition at line 226 of file MCSubtargetInfo.cpp.

References InitMCProcessorInfo(), and string.

MCSubtargetInfo() [3/3]

llvm::MCSubtargetInfo::MCSubtargetInfo ( )

delete

~MCSubtargetInfo()

virtual llvm::MCSubtargetInfo::~MCSubtargetInfo ( )

virtualdefault

Member Function Documentation

ApplyFeatureFlag()

FeatureBitset MCSubtargetInfo::ApplyFeatureFlag

(

StringRef

FS

)

Apply a feature flag and return the re-computed feature bits, including all feature bits implied by the flag.

Definition at line 293 of file MCSubtargetInfo.cpp.

References ApplyFeatureFlag().

Referenced by ApplyFeatureFlag(), and checkFeatures().

checkFeatures()

bool MCSubtargetInfo::checkFeatures

(

StringRef

FS

)

const

Check whether the subtarget features are enabled/disabled as per the provided string, ignoring all other features.

Definition at line 298 of file MCSubtargetInfo.cpp.

References llvm::All, ApplyFeatureFlag(), and F.

ClearFeatureBitsTransitively()

FeatureBitset MCSubtargetInfo::ClearFeatureBitsTransitively

(

const FeatureBitset &

FB

)

Definition at line 257 of file MCSubtargetInfo.cpp.

References ClearImpliedBits(), I, llvm::FeatureBitset::reset(), and llvm::FeatureBitset::size().

enableWritePrefetching()

bool MCSubtargetInfo::enableWritePrefetching ( ) const

virtual

Returns

True if prefetching should also be done for writes.

Definition at line 371 of file MCSubtargetInfo.cpp.

Referenced by llvm::BasicTTIImplBase< T >::enableWritePrefetching().

getAllProcessorDescriptions()

ArrayRef< SubtargetSubTypeKV > llvm::MCSubtargetInfo::getAllProcessorDescriptions ( ) const

inline

Return processor descriptions.

Definition at line 234 of file MCSubtargetInfo.h.

getAllProcessorFeatures()

ArrayRef< SubtargetFeatureKV > llvm::MCSubtargetInfo::getAllProcessorFeatures ( ) const

inline

Return processor features.

Definition at line 239 of file MCSubtargetInfo.h.

getCacheAssociativity()

std::optional< unsigned > MCSubtargetInfo::getCacheAssociativity ( unsigned  Level ) const

virtual

Return the cache associatvity for the given level of cache.

Level is zero-based, so a value of zero means the first level of cache.

Definition at line 354 of file MCSubtargetInfo.cpp.

Referenced by llvm::BasicTTIImplBase< T >::getCacheAssociativity().

getCacheLineSize() [1/2]

virtual unsigned llvm::MCSubtargetInfo::getCacheLineSize ( ) const

inlinevirtual

Return the target cache line size in bytes.

By default, return the line size for the bottom-most level of cache. This provides a more convenient interface for the common case where all cache levels have the same line size. Return zero if there is no cache model.

Definition at line 295 of file MCSubtargetInfo.h.

References getCacheLineSize(), and Size.

Referenced by getCacheLineSize().

getCacheLineSize() [2/2]

std::optional< unsigned > MCSubtargetInfo::getCacheLineSize ( unsigned  Level ) const

virtual

Return the target cache line size in bytes at a given level.

Definition at line 359 of file MCSubtargetInfo.cpp.

Referenced by llvm::BasicTTIImplBase< T >::getCacheLineSize().

getCacheSize()

std::optional< unsigned > MCSubtargetInfo::getCacheSize ( unsigned  Level ) const

virtual

Return the cache size in bytes for the given level of cache.

Level is zero-based, so a value of zero means the first level of cache.

Definition at line 349 of file MCSubtargetInfo.cpp.

getCPU()

StringRef llvm::MCSubtargetInfo::getCPU ( ) const

inline

Definition at line 109 of file MCSubtargetInfo.h.

Referenced by llvm::Hexagon_MC::addArchSubtarget(), llvm::createHexagonAsmBackend(), llvm::createMipsAsmBackend(), llvm::AMDGPUTargetAsmStreamer::EmitAmdhsaKernelDescriptor(), llvm::ARMTargetStreamer::emitTargetAttributes(), llvm::AMDGPU::IsaInfo::getAddressableNumSGPRs(), getArchForCPU(), llvm::Hexagon_MC::getArchSubtarget(), llvm::AMDGPU::MCKernelDescriptor::getDefaultAmdhsaKernelDescriptor(), llvm::Hexagon_MC::GetELFFlags(), llvm::AMDGPU::IsaInfo::getMaxNumSGPRs(), llvm::AMDGPU::IsaInfo::getMinNumSGPRs(), llvm::AMDGPU::getNSAMaxSize(), llvm::AMDGPU::IsaInfo::getNumExtraSGPRs(), llvm::AMDGPU::IsaInfo::getSGPRAllocGranule(), llvm::AMDGPU::IsaInfo::getTotalNumSGPRs(), llvm::AMDGPU::initDefaultAMDKernelCodeT(), llvm::HexagonMCInstrInfo::isOrderedDuplexPair(), llvm::AMDGPUInstPrinter::printSWaitCnt(), and llvm::AMDGPU::IsaInfo::AMDGPUTargetID::toString().

getEnabledProcessorFeatures()

std::vector< SubtargetFeatureKV > MCSubtargetInfo::getEnabledProcessorFeatures

(

)

const

Return the list of processor features currently enabled.

Definition at line 340 of file MCSubtargetInfo.cpp.

References llvm::copy_if(), and llvm::FeatureBitset::test().

getFeatureBits()

const FeatureBitset & llvm::MCSubtargetInfo::getFeatureBits ( ) const

inline

Definition at line 112 of file MCSubtargetInfo.h.

Referenced by llvm::AMDGPU::IsaInfo::AMDGPUTargetID::AMDGPUTargetID(), llvm::AVRELFStreamer::AVRELFStreamer(), llvm::CSKYTargetELFStreamer::CSKYTargetELFStreamer(), DecodeGPRPairRegisterClass(), DecodeHINTInstruction(), DecodeSETPANInstruction(), DecodeSystemPStateImm0_15Instruction(), DecodeSystemPStateImm0_1Instruction(), llvm::HexagonTargetStreamer::emitTargetAttributes(), llvm::RISCVTargetStreamer::emitTargetAttributes(), llvm::MipsTargetELFStreamer::finish(), llvm::AMDGPU::IsaInfo::getAddressableLocalMemorySize(), llvm::AMDGPU::IsaInfo::getAddressableNumSGPRs(), llvm::AMDGPU::IsaInfo::getAddressableNumVGPRs(), llvm::AMDGPU::MCKernelDescriptor::getDefaultAmdhsaKernelDescriptor(), llvm::MCInstrInfo::getDeprecatedInfo(), llvm::AMDGPU::IsaInfo::getEUsPerCU(), llvm::AMDGPU::IsaInfo::getLocalMemorySize(), llvm::AMDGPU::IsaInfo::getMaxNumSGPRs(), llvm::AMDGPU::IsaInfo::getMaxWorkGroupsPerCU(), llvm::AMDGPU::IsaInfo::getMinNumSGPRs(), llvm::AMDGPU::IsaInfo::getNumExtraSGPRs(), llvm::AMDGPU::IsaInfo::getTotalNumVGPRs(), llvm::AMDGPU::IsaInfo::getVGPRAllocGranule(), llvm::AMDGPU::IsaInfo::getVGPREncodingGranule(), llvm::AMDGPU::IsaInfo::getWavefrontSize(), llvm::AMDGPU::initDefaultAMDKernelCodeT(), llvm::ARM::isCDECoproc(), llvm::AMDGPU::isGFX12(), isValidSysReg(), llvm::LoongArchTargetELFStreamer::LoongArchTargetELFStreamer(), matchAliasCondition(), llvm::MipsTargetELFStreamer::MipsTargetELFStreamer(), llvm::RISCVInstPrinter::printCSRSystemRegister(), llvm::ARMInstPrinter::printMSRMaskOperand(), llvm::AArch64InstPrinter::printPrefetchOp(), llvm::AArch64InstPrinter::printSysAlias(), llvm::AArch64InstPrinter::printSyspAlias(), llvm::AArch64InstPrinter::printSystemPStateField(), llvm::HexagonMCInstrInfo::requiresSlot(), llvm::RISCVAsmBackend::RISCVAsmBackend(), llvm::RISCVTargetELFStreamer::RISCVTargetELFStreamer(), llvm::CSKYAsmPrinter::runOnMachineFunction(), and XtensaAsmParser::XtensaAsmParser().

getFeatureString()

StringRef llvm::MCSubtargetInfo::getFeatureString ( ) const

inline

Definition at line 117 of file MCSubtargetInfo.h.

getHwMode()

virtual unsigned llvm::MCSubtargetInfo::getHwMode ( enum HwModeType  type = HwMode_Default ) const

inlinevirtual

HwMode ID corresponding to the 'type' parameter is retrieved from the HwMode bit set of the current subtarget.

It’s important to note that if the current subtarget possesses two HwMode IDs and both control a single attribute (such as RegInfo), this interface will result in an error.

Definition at line 269 of file MCSubtargetInfo.h.

getHwModeSet()

virtual unsigned llvm::MCSubtargetInfo::getHwModeSet ( ) const

inlinevirtual

Return a bit set containing all HwMode IDs of the current subtarget.

Definition at line 263 of file MCSubtargetInfo.h.

getInstrItineraryForCPU()

InstrItineraryData MCSubtargetInfo::getInstrItineraryForCPU

(

StringRef

CPU

)

const

Get scheduling itinerary of a CPU.

Definition at line 329 of file MCSubtargetInfo.cpp.

References getSchedModelForCPU().

Referenced by getItineraryLatency().

getMaxPrefetchIterationsAhead()

unsigned MCSubtargetInfo::getMaxPrefetchIterationsAhead ( ) const

virtual

Return the maximum prefetch distance in terms of loop iterations.

Definition at line 367 of file MCSubtargetInfo.cpp.

Referenced by llvm::BasicTTIImplBase< T >::getMaxPrefetchIterationsAhead().

getMinPrefetchStride()

unsigned MCSubtargetInfo::getMinPrefetchStride ( unsigned  NumMemAccesses, unsigned  NumStridedMemAccesses, unsigned  NumPrefetches, bool  HasCall  ) const

virtual

Return the minimum stride necessary to trigger software prefetching.

Definition at line 375 of file MCSubtargetInfo.cpp.

Referenced by llvm::BasicTTIImplBase< T >::getMinPrefetchStride().

getPrefetchDistance()

unsigned MCSubtargetInfo::getPrefetchDistance ( ) const

virtual

Return the preferred prefetch distance in terms of instructions.

Definition at line 363 of file MCSubtargetInfo.cpp.

Referenced by llvm::BasicTTIImplBase< T >::getPrefetchDistance().

getReadAdvanceCycles()

int llvm::MCSubtargetInfo::getReadAdvanceCycles ( const MCSchedClassDesc *  SC, unsigned  UseIdx, unsigned  WriteResID  ) const

inline

Definition at line 184 of file MCSubtargetInfo.h.

References E, and I.

Referenced by llvm::mca::RegisterFile::addRegisterRead(), llvm::mca::RegisterFile::checkRAWHazards(), llvm::mca::RegisterFile::collectWrites(), and llvm::TargetSchedModel::computeOperandLatency().

getReadAdvanceEntries()

ArrayRef< MCReadAdvanceEntry > llvm::MCSubtargetInfo::getReadAdvanceEntries ( const MCSchedClassDesc &  SC ) const

inline

Return the set of ReadAdvance entries declared by the scheduling class descriptor in input.

Definition at line 206 of file MCSubtargetInfo.h.

getSchedModel()

const MCSchedModel & llvm::MCSubtargetInfo::getSchedModel ( ) const

inline

Get the machine model for this subtarget's CPU.

Definition at line 163 of file MCSubtargetInfo.h.

Referenced by llvm::mca::RegisterFile::addRegisterRead(), llvm::mca::RegisterFile::checkRAWHazards(), llvm::mca::RegisterFile::collectWrites(), llvm::mca::Context::createDefaultPipeline(), llvm::mca::Context::createInOrderPipeline(), llvm::mca::InstrBuilder::createInstruction(), llvm::mca::DispatchStage::DispatchStage(), llvm::TargetSubtargetInfo::enablePostRAScheduler(), llvm::HexagonMCInstrInfo::getCVIResources(), llvm::mca::InOrderIssueStage::getIssueWidth(), getLatency(), llvm::HexagonMCInstrInfo::getOtherReservedSlots(), llvm::MCSchedModel::getReciprocalThroughput(), llvm::HexagonMCInstrInfo::getUnits(), llvm::TargetSchedModel::init(), llvm::mca::initializeUsedResources(), initInstrItins(), and llvm::mca::InstrBuilder::InstrBuilder().

getSchedModelForCPU()

const MCSchedModel & MCSubtargetInfo::getSchedModelForCPU

(

StringRef

CPU

)

const

Get the machine model of a CPU.

Definition at line 310 of file MCSubtargetInfo.cpp.

References assert(), llvm::MCSchedModel::Default, llvm::errs(), Find(), llvm::is_sorted(), and llvm::SubtargetSubTypeKV::SchedModel.

Referenced by getInstrItineraryForCPU(), and InitMCProcessorInfo().

getTargetTriple()

const Triple & llvm::MCSubtargetInfo::getTargetTriple ( ) const

inline

Definition at line 108 of file MCSubtargetInfo.h.

Referenced by llvm::Hexagon_MC::addArchSubtarget(), llvm::ARMAsmBackend::adjustFixupValue(), llvm::createAArch64beAsmBackend(), llvm::createAArch64leAsmBackend(), llvm::createAArch64ObjectTargetStreamer(), llvm::createAMDGPUAsmBackend(), createARMAsmBackend(), llvm::createARMObjectTargetStreamer(), createAsmBackend(), llvm::createAVRAsmBackend(), createCSKYObjectTargetStreamer(), llvm::createHexagonAsmBackend(), llvm::createLanaiAsmBackend(), llvm::createLoongArchAsmBackend(), createLoongArchObjectTargetStreamer(), llvm::createM68kAsmBackend(), llvm::createMipsAsmBackend(), llvm::createMSP430ObjectTargetStreamer(), createObjectTargetStreamer(), llvm::createPPCAsmBackend(), llvm::createRISCVAsmBackend(), createRISCVObjectTargetStreamer(), llvm::createSparcAsmBackend(), llvm::createSystemZMCAsmBackend(), llvm::createVEAsmBackend(), llvm::createX86_32AsmBackend(), llvm::createX86_64AsmBackend(), llvm::createX86ObjectTargetStreamer(), llvm::createXtensaMCAsmBackend(), llvm::AMDGPUAsmPrinter::doFinalization(), llvm::AsmPrinter::emitXRayTable(), llvm::AMDGPUTargetELFStreamer::finish(), llvm::LoongArchAsmBackend::getFixupKind(), llvm::RISCVAsmBackend::getFixupKind(), llvm::AMDGPUMCAsmInfo::getMaxInstLength(), llvm::AMDGPU::IsaInfo::getMaxWorkGroupsPerCU(), llvm::AMDGPU::getMCReg(), llvm::PPCMCCodeEmitter::getTLSRegEncoding(), llvm::AMDGPU::isHsaAbi(), llvm::LoongArchTargetELFStreamer::LoongArchTargetELFStreamer(), lowerMSASplatZExt(), llvm::MipsTargetELFStreamer::MipsTargetELFStreamer(), llvm::RISCVAsmBackend::RISCVAsmBackend(), llvm::RISCVTargetELFStreamer::RISCVTargetELFStreamer(), llvm::AMDGPUDAGToDAGISel::SelectBuildVector(), llvm::AMDGPU::IsaInfo::AMDGPUTargetID::toString(), and truncateVecElts().

getTuneCPU()

StringRef llvm::MCSubtargetInfo::getTuneCPU ( ) const

inline

Definition at line 110 of file MCSubtargetInfo.h.

getWriteLatencyEntry()

const MCWriteLatencyEntry * llvm::MCSubtargetInfo::getWriteLatencyEntry ( const MCSchedClassDesc *  SC, unsigned  DefIdx  ) const

inline

Definition at line 176 of file MCSubtargetInfo.h.

References assert().

Referenced by llvm::MCSchedModel::computeInstrLatency(), llvm::TargetSchedModel::computeOperandLatency(), and getLatency().

getWriteProcResBegin()

const MCWriteProcResEntry * llvm::MCSubtargetInfo::getWriteProcResBegin ( const MCSchedClassDesc *  SC ) const

inline

Return an iterator at the first process resource consumed by the given scheduling class.

Definition at line 167 of file MCSubtargetInfo.h.

Referenced by llvm::ResourceManager::calculateResMII(), llvm::TargetSchedModel::computeOutputLatency(), llvm::MCSchedModel::getReciprocalThroughput(), llvm::TargetSchedModel::getWriteProcResBegin(), getWriteProcResEnd(), and llvm::mca::initializeUsedResources().

getWriteProcResEnd()

const MCWriteProcResEntry * llvm::MCSubtargetInfo::getWriteProcResEnd ( const MCSchedClassDesc *  SC ) const

inline

Definition at line 171 of file MCSubtargetInfo.h.

References getWriteProcResBegin().

Referenced by llvm::ResourceManager::calculateResMII(), llvm::TargetSchedModel::computeOutputLatency(), llvm::MCSchedModel::getReciprocalThroughput(), and llvm::TargetSchedModel::getWriteProcResEnd().

hasFeature()

bool llvm::MCSubtargetInfo::hasFeature ( unsigned  Feature ) const

inline

Definition at line 119 of file MCSubtargetInfo.h.

Referenced by addDefaultWaveSize(), llvm::ARMAsmBackend::adjustFixupValue(), llvm::AMDGPUDisassembler::AMDGPUDisassembler(), checkFeature(), clearFeature(), llvm::AMDGPUDisassembler::convertEXPInst(), llvm::AMDGPUDisassembler::convertMIMGInst(), llvm::AMDGPUDisassembler::convertSDWAInst(), llvm::LoongArchAsmBackend::createObjectTargetWriter(), llvm::AMDGPUDisassembler::decodeBoolReg(), decodeFPUV3Instruction(), DecodeGPRRegisterClass(), llvm::AMDGPUDisassembler::decodeSDWASrc(), llvm::AMDGPUDisassembler::decodeSDWAVopcDst(), llvm::ARMTargetStreamer::emitTargetAttributes(), llvm::RISCVTargetStreamer::emitTargetAttributes(), llvm::CSKYMCCodeEmitter::expandJBTF(), llvm::RISCVMatInt::generateInstSeq(), generateInstSeqImpl(), generateInstSeqLeadingZeros(), llvm::RISCVMatInt::generateTwoRegInstSeq(), getArchForCPU(), getARMLoadDeprecationInfo(), getARMStoreDeprecationInfo(), getEFlagsForFeatureSet(), llvm::AMDGPUDisassembler::getInstruction(), llvm::RISCVMatInt::getIntMatCost(), getLit16Encoding(), getLit32Encoding(), getLit64Encoding(), llvm::AMDGPUMCAsmInfo::getMaxInstLength(), getMCRDeprecationInfo(), getMRCDeprecationInfo(), llvm::ARMAsmBackend::getRelaxedOpcode(), llvm::RISCVMCObjectFileInfo::getTextSectionAlignment(), llvm::LoongArchAsmBackend::handleAddSubRelocations(), llvm::AMDGPU::hasA16(), llvm::AMDGPUDisassembler::hasArchitectedFlatScratch(), llvm::AMDGPU::hasArchitectedFlatScratch(), llvm::AMDGPU::hasDPPSrc1SGPR(), llvm::AMDGPU::hasG16(), llvm::AMDGPU::hasGDS(), llvm::AMDGPU::hasGFX10_3Insts(), llvm::AMDGPU::hasKernargPreload(), llvm::AMDGPU::hasMAIInsts(), llvm::AMDGPU::hasMIMG_R128(), llvm::ARMAsmBackend::hasNOP(), llvm::AMDGPU::hasPackedD16(), llvm::AMDGPU::hasSRAMECC(), llvm::AMDGPU::hasVOPD(), llvm::AMDGPU::hasXNACK(), llvm::ARMElfTargetObjectFile::Initialize(), llvm::X86_MC::is16BitMemOperand(), llvm::AMDGPU::isCI(), llvm::AMDGPU::isGCN3Encoding(), llvm::AMDGPU::isGFX10(), llvm::AMDGPU::isGFX10_AEncoding(), llvm::AMDGPU::isGFX10_BEncoding(), llvm::AMDGPUDisassembler::isGFX11(), llvm::AMDGPU::isGFX11(), llvm::AMDGPUDisassembler::isGFX12(), llvm::AMDGPU::isGFX9(), llvm::AMDGPUDisassembler::isGFX90A(), llvm::AMDGPU::isGFX90A(), llvm::AMDGPU::isGFX940(), isMicroMips(), isMips32r6(), llvm::AMDGPU::isSI(), isThumb(), isV8M(), llvm::SparcInstPrinter::isV9(), llvm::AMDGPUDisassembler::isVI(), llvm::AMDGPU::isVI(), llvm::LoongArchTargetLowering::LowerFormalArguments(), llvm::CSKYAsmBackend::mayNeedRelaxation(), llvm::MSP430TargetELFStreamer::MSP430TargetELFStreamer(), llvm::X86_MC::needsAddressSizeOverride(), llvm::HexagonMCInstrInfo::packetSizeSlots(), llvm::RISCVInstPrinter::printBranchOperand(), printImmediateBFloat16(), printImmediateFP16(), llvm::AArch64InstPrinter::printInst(), llvm::PPCInstPrinter::printInst(), llvm::X86ATTInstPrinter::printInst(), llvm::X86IntelInstPrinter::printInst(), llvm::X86InstPrinterCommon::printInstFlags(), llvm::ARMInstPrinter::printMemBOption(), llvm::CSKYInstPrinter::printOperand(), llvm::RISCVInstPrinter::printStackAdj(), llvm::AArch64InstPrinter::printSysAlias(), llvm::AArch64InstPrinter::printSyspAlias(), llvm::CSKYAsmBackend::relaxInstruction(), llvm::RISCVTargetELFStreamer::RISCVTargetELFStreamer(), llvm::RISCVTargetStreamer::setFlagsFromFeatures(), llvm::LoongArchAsmBackend::shouldForceRelocation(), llvm::RISCVAsmBackend::shouldForceRelocation(), llvm::LoongArchAsmBackend::shouldInsertExtraNopBytesForCodeAlign(), llvm::RISCVAsmBackend::shouldInsertExtraNopBytesForCodeAlign(), llvm::LoongArchAsmBackend::shouldInsertFixupForCodeAlign(), llvm::RISCVAsmBackend::shouldInsertFixupForCodeAlign(), and llvm::RISCVAsmBackend::writeNopData().

initInstrItins()

void MCSubtargetInfo::initInstrItins

(

InstrItineraryData &

InstrItins

)

const

Initialize an InstrItineraryData instance.

Definition at line 334 of file MCSubtargetInfo.cpp.

References getSchedModel().

Referenced by llvm::TargetSchedModel::init().

InitMCProcessorInfo()

void MCSubtargetInfo::InitMCProcessorInfo ( StringRef  CPU, StringRef  TuneCPU, StringRef  FS  )

protected

Initialize the scheduling model and feature bits.

FIXME: Find a way to stick this in the constructor, since it should only be called during initialization.

Definition at line 209 of file MCSubtargetInfo.cpp.

References llvm::MCSchedModel::Default, llvm::StringRef::empty(), getFeatures(), and getSchedModelForCPU().

Referenced by MCSubtargetInfo().

isCPUStringValid()

virtual bool llvm::MCSubtargetInfo::isCPUStringValid ( StringRef  CPU ) const

inlinevirtual

Check whether the CPU string is valid.

Definition at line 228 of file MCSubtargetInfo.h.

References llvm::ArrayRef< T >::end(), and llvm::lower_bound().

operator=() [1/2]

MCSubtargetInfo & llvm::MCSubtargetInfo::operator= ( const MCSubtargetInfo &  )

delete

operator=() [2/2]

MCSubtargetInfo & llvm::MCSubtargetInfo::operator= ( MCSubtargetInfo &&  )

delete

resolveVariantSchedClass()

virtual unsigned llvm::MCSubtargetInfo::resolveVariantSchedClass ( unsigned  SchedClass, const MCInst *  MI, const MCInstrInfo *  MCII, unsigned  CPUID  ) const

inlinevirtual

Resolve a variant scheduling class for the given MCInst and CPU.

Definition at line 220 of file MCSubtargetInfo.h.

Referenced by llvm::MCSchedModel::computeInstrLatency(), and llvm::MCSchedModel::getReciprocalThroughput().

setDefaultFeatures()

void MCSubtargetInfo::setDefaultFeatures	(	StringRef	CPU,
		StringRef	TuneCPU,
		StringRef	FS
	)

Set the features to the default for the given CPU and TuneCPU, with ano appended feature string.

Definition at line 220 of file MCSubtargetInfo.cpp.

References getFeatures().

setFeatureBits()

void llvm::MCSubtargetInfo::setFeatureBits ( const FeatureBitset &  FeatureBits_ )

inline

Definition at line 113 of file MCSubtargetInfo.h.

Referenced by llvm::CSKYAsmPrinter::runOnMachineFunction().

SetFeatureBitsTransitively()

FeatureBitset MCSubtargetInfo::SetFeatureBitsTransitively

(

const FeatureBitset &

FB

)

Set/clear additional feature bits, including all other bits they imply.

Definition at line 251 of file MCSubtargetInfo.cpp.

References SetImpliedBits().

shouldPrefetchAddressSpace()

bool MCSubtargetInfo::shouldPrefetchAddressSpace ( unsigned  AS ) const

virtual

Returns

if target want to issue a prefetch in address space AS.

Definition at line 382 of file MCSubtargetInfo.cpp.

Referenced by llvm::BasicTTIImplBase< T >::shouldPrefetchAddressSpace().

ToggleFeature() [1/3]

FeatureBitset MCSubtargetInfo::ToggleFeature

(

const FeatureBitset &

FB

)

Toggle a feature and return the re-computed feature bits.

This version does not change the implied bits.

Definition at line 246 of file MCSubtargetInfo.cpp.

ToggleFeature() [2/3]

FeatureBitset MCSubtargetInfo::ToggleFeature

(

StringRef

FS

)

Toggle a set of features and return the re-computed feature bits.

This version will also change all implied bits.

Definition at line 268 of file MCSubtargetInfo.cpp.

References ClearImpliedBits(), llvm::errs(), Find(), llvm::FeatureBitArray::getAsBitset(), llvm::SubtargetFeatureKV::Implies, llvm::FeatureBitset::reset(), llvm::FeatureBitset::set(), SetImpliedBits(), llvm::SubtargetFeatures::StripFlag(), llvm::FeatureBitset::test(), and llvm::SubtargetFeatureKV::Value.

ToggleFeature() [3/3]

FeatureBitset MCSubtargetInfo::ToggleFeature

(

uint64_t

FB

)

Toggle a feature and return the re-computed feature bits.

This version does not change the implied bits.

Definition at line 241 of file MCSubtargetInfo.cpp.

References llvm::FeatureBitset::flip().

Referenced by addDefaultWaveSize(), and clearFeature().

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

• include/llvm/MC/MCSubtargetInfo.h
• lib/MC/MCSubtargetInfo.cpp