MCRegisterInfo base class - We assume that the target defines a static array of MCRegisterDesc objects that represent all of the machine registers that the target has. More...

#include "llvm/MC/MCRegisterInfo.h"

Inheritance diagram for llvm::MCRegisterInfo:

[legend]

Classes
class	DiffListIterator
	DiffListIterator - Base iterator class that can traverse the differentially encoded register and regunit lists in DiffLists. More...

struct	DwarfLLVMRegPair
	DwarfLLVMRegPair - Emitted by tablegen so Dwarf<->LLVM reg mappings can be performed with a binary search. More...

struct	SubRegCoveredBits
	SubRegCoveredBits - Emitted by tablegen: bit range covered by a subreg index, -1 in any being invalid. More...

Public Types
using	regclass_iterator = const MCRegisterClass *

Public Member Functions
void	InitMCRegisterInfo (const MCRegisterDesc D, unsigned NR, unsigned RA, unsigned PC, const MCRegisterClass C, unsigned NC, const MCPhysReg(RURoots)[2], unsigned NRU, const MCPhysReg DL, const LaneBitmask RUMS, const char Strings, const char ClassStrings, const uint16_t SubIndices, unsigned NumIndices, const SubRegCoveredBits SubIdxRanges, const uint16_t RET)
	Initialize MCRegisterInfo, called by TableGen auto-generated routines. More...

void	mapLLVMRegsToDwarfRegs (const DwarfLLVMRegPair *Map, unsigned Size, bool isEH)
	Used to initialize LLVM register to Dwarf register number mapping. More...

void	mapDwarfRegsToLLVMRegs (const DwarfLLVMRegPair *Map, unsigned Size, bool isEH)
	Used to initialize Dwarf register to LLVM register number mapping. More...

void	mapLLVMRegToSEHReg (unsigned LLVMReg, int SEHReg)
	mapLLVMRegToSEHReg - Used to initialize LLVM register to SEH register number mapping. More...

void	mapLLVMRegToCVReg (unsigned LLVMReg, int CVReg)

unsigned	getRARegister () const
	This method should return the register where the return address can be found. More...

unsigned	getProgramCounter () const
	Return the register which is the program counter. More...

const MCRegisterDesc &	operator[] (unsigned RegNo) const

const MCRegisterDesc &	get (unsigned RegNo) const
	Provide a get method, equivalent to [], but more useful with a pointer to this object. More...

unsigned	getSubReg (unsigned Reg, unsigned Idx) const
	Returns the physical register number of sub-register "Index" for physical register RegNo. More...

unsigned	getMatchingSuperReg (unsigned Reg, unsigned SubIdx, const MCRegisterClass *RC) const
	Return a super-register of the specified register Reg so its sub-register of index SubIdx is Reg. More...

unsigned	getSubRegIndex (unsigned RegNo, unsigned SubRegNo) const
	For a given register pair, return the sub-register index if the second register is a sub-register of the first. More...

unsigned	getSubRegIdxSize (unsigned Idx) const
	Get the size of the bit range covered by a sub-register index. More...

unsigned	getSubRegIdxOffset (unsigned Idx) const
	Get the offset of the bit range covered by a sub-register index. More...

const char *	getName (unsigned RegNo) const
	Return the human-readable symbolic target-specific name for the specified physical register. More...

unsigned	getNumRegs () const
	Return the number of registers this target has (useful for sizing arrays holding per register information) More...

unsigned	getNumSubRegIndices () const
	Return the number of sub-register indices understood by the target. More...

unsigned	getNumRegUnits () const
	Return the number of (native) register units in the target. More...

int	getDwarfRegNum (unsigned RegNum, bool isEH) const
	Map a target register to an equivalent dwarf register number. More...

int	getLLVMRegNum (unsigned RegNum, bool isEH) const
	Map a dwarf register back to a target register. More...

int	getLLVMRegNumFromEH (unsigned RegNum) const
	Map a DWARF EH register back to a target register (same as getLLVMRegNum(RegNum, true)) but return -1 if there is no mapping, rather than asserting that there must be one. More...

int	getDwarfRegNumFromDwarfEHRegNum (unsigned RegNum) const
	Map a target EH register number to an equivalent DWARF register number. More...

int	getSEHRegNum (unsigned RegNum) const
	Map a target register to an equivalent SEH register number. More...

int	getCodeViewRegNum (unsigned RegNum) const
	Map a target register to an equivalent CodeView register number. More...

regclass_iterator	regclass_begin () const

regclass_iterator	regclass_end () const

iterator_range< regclass_iterator >	regclasses () const

unsigned	getNumRegClasses () const

const MCRegisterClass &	getRegClass (unsigned i) const
	Returns the register class associated with the enumeration value. More...

const char *	getRegClassName (const MCRegisterClass *Class) const

uint16_t	getEncodingValue (unsigned RegNo) const
	Returns the encoding for RegNo. More...

bool	isSubRegister (unsigned RegA, unsigned RegB) const
	Returns true if RegB is a sub-register of RegA. More...

bool	isSuperRegister (unsigned RegA, unsigned RegB) const
	Returns true if RegB is a super-register of RegA. More...

bool	isSubRegisterEq (unsigned RegA, unsigned RegB) const
	Returns true if RegB is a sub-register of RegA or if RegB == RegA. More...

bool	isSuperRegisterEq (unsigned RegA, unsigned RegB) const
	Returns true if RegB is a super-register of RegA or if RegB == RegA. More...

bool	isSuperOrSubRegisterEq (unsigned RegA, unsigned RegB) const
	Returns true if RegB is a super-register or sub-register of RegA or if RegB == RegA. More...

Friends
class	MCSubRegIterator

class	MCSubRegIndexIterator

class	MCSuperRegIterator

class	MCRegUnitIterator

class	MCRegUnitMaskIterator

class	MCRegUnitRootIterator

Detailed Description

MCRegisterInfo base class - We assume that the target defines a static array of MCRegisterDesc objects that represent all of the machine registers that the target has.

As such, we simply have to track a pointer to this array so that we can turn register number into a register descriptor.

Note this class is designed to be a base class of TargetRegisterInfo, which is the interface used by codegen. However, specific targets should never specialize this class. MCRegisterInfo should only contain getters to access TableGen generated physical register data. It must not be extended with virtual methods.

Definition at line 129 of file MCRegisterInfo.h.

Member Typedef Documentation

◆ regclass_iterator

using llvm::MCRegisterInfo::regclass_iterator = const MCRegisterClass *

Definition at line 131 of file MCRegisterInfo.h.

Member Function Documentation

◆ get()

const MCRegisterDesc& llvm::MCRegisterInfo::get ( unsigned RegNo ) const

inline

Provide a get method, equivalent to [], but more useful with a pointer to this object.

Definition at line 340 of file MCRegisterInfo.h.

References Reg.

Referenced by llvm::TargetMachine::getMCRegisterInfo(), llvm::LLVMDisasmContext::getRegisterInfo(), llvm::DWARFContext::getRegisterInfo(), llvm::MCRegUnitIterator::MCRegUnitIterator(), llvm::MCRegUnitMaskIterator::MCRegUnitMaskIterator(), llvm::MCSubRegIndexIterator::MCSubRegIndexIterator(), llvm::MCSubRegIterator::MCSubRegIterator(), and llvm::MCSuperRegIterator::MCSuperRegIterator().

◆ getCodeViewRegNum()

int MCRegisterInfo::getCodeViewRegNum ( unsigned RegNum ) const

Map a target register to an equivalent CodeView register number.

Definition at line 126 of file MCRegisterInfo.cpp.

References llvm::DenseMapBase< DerivedT, KeyT, ValueT, KeyInfoT, BucketT >::empty(), llvm::DenseMapBase< DerivedT, KeyT, ValueT, KeyInfoT, BucketT >::end(), llvm::DenseMapBase< DerivedT, KeyT, ValueT, KeyInfoT, BucketT >::find(), getName(), getNumRegs(), I, and llvm::report_fatal_error().

Referenced by needsReferenceType(), and printFPOReg().

◆ getDwarfRegNum()

int MCRegisterInfo::getDwarfRegNum	(	unsigned	RegNum,
		bool	isEH
	)		const

Map a target register to an equivalent dwarf register number.

Returns -1 if there is no equivalent value. The second parameter allows targets to use different numberings for EH info and debugging info.

Definition at line 67 of file MCRegisterInfo.cpp.

References llvm::MCRegisterInfo::DwarfLLVMRegPair::FromReg, I, llvm::lower_bound(), Size, and llvm::MCRegisterInfo::DwarfLLVMRegPair::ToReg.

Referenced by llvm::DwarfExpression::addMachineReg(), llvm::ARMFrameLowering::adjustForSegmentedStacks(), llvm::AArch64InstrInfo::buildOutlinedFrame(), createAArch64MCAsmInfo(), createARMMCAsmInfo(), createHexagonMCAsmInfo(), createMipsMCAsmInfo(), createPPCMCAsmInfo(), createSparcMCAsmInfo(), createSparcV9MCAsmInfo(), createSystemZMCAsmInfo(), createX86MCAsmInfo(), llvm::AArch64FrameLowering::emitCalleeSavedFrameMoves(), llvm::X86FrameLowering::emitCalleeSavedFrameMoves(), llvm::Thumb1FrameLowering::emitPrologue(), llvm::Mips16FrameLowering::emitPrologue(), llvm::MipsSEFrameLowering::emitPrologue(), llvm::XCoreFrameLowering::emitPrologue(), llvm::ARMFrameLowering::emitPrologue(), llvm::ARCFrameLowering::emitPrologue(), llvm::SystemZFrameLowering::emitPrologue(), llvm::PPCFrameLowering::emitPrologue(), getCIEVersion(), getDwarfRegNum(), getDwarfRegNumFromDwarfEHRegNum(), and IsSmallMemAccess().

◆ getDwarfRegNumFromDwarfEHRegNum()

int MCRegisterInfo::getDwarfRegNumFromDwarfEHRegNum ( unsigned RegNum ) const

Map a target EH register number to an equivalent DWARF register number.

Definition at line 105 of file MCRegisterInfo.cpp.

References getDwarfRegNum(), and getLLVMRegNumFromEH().

◆ getEncodingValue()

uint16_t llvm::MCRegisterInfo::getEncodingValue ( unsigned RegNo ) const

inline

Returns the encoding for RegNo.

Definition at line 443 of file MCRegisterInfo.h.

References assert().

Referenced by llvm::AArch64InstrInfo::copyGPRRegTuple(), llvm::PPCInstrInfo::copyPhysReg(), llvm::MipsTargetELFStreamer::emitFrame(), llvm::MSP430MCCodeEmitter::encodeInstruction(), expandNOVLXLoad(), expandNOVLXStore(), llvm::X86InstrInfo::expandPostRAPseudo(), llvm::PPCMCCodeEmitter::get_crbitm_encoding(), GetAEABIUnwindPersonalityName(), llvm::PPCMCCodeEmitter::getMachineOpValue(), llvm::MipsMCCodeEmitter::getMachineOpValue(), llvm::X86TargetLowering::getRegForInlineAsmConstraint(), llvm::MipsMCCodeEmitter::getRegisterListOpValue(), getTag(), llvm::PPCMCCodeEmitter::getTLSRegEncoding(), HandleVRSaveUpdate(), HasConditionalBranch(), llvm::AArch64_MC::initLLVMToCVRegMapping(), llvm::X86_MC::initLLVMToSEHAndCVRegMapping(), llvm::ARMBaseInstrInfo::isLoadFromStackSlotPostFE(), LowerADJUST_TRAMPOLINE(), LowerLargeShift(), makeCombineInst(), llvm::PPCInstPrinter::printOperand(), llvm::ARMInstPrinter::printRegisterList(), llvm::AMDGPUInstPrinter::printRegOperand(), llvm::MipsAsmPrinter::printSavedRegsBitmask(), llvm::ARMFrameLowering::ResolveFrameIndexReference(), llvm::MipsRegInfoRecord::SetPhysRegUsed(), llvm::AArch64ExternalSymbolizer::tryAddingSymbolicOperand(), and llvm::tryFoldSPUpdateIntoPushPop().

◆ getLLVMRegNum()

int MCRegisterInfo::getLLVMRegNum	(	unsigned	RegNum,
		bool	isEH
	)		const

Map a dwarf register back to a target register.

Definition at line 80 of file MCRegisterInfo.cpp.

References assert(), llvm::MCRegisterInfo::DwarfLLVMRegPair::FromReg, I, llvm::lower_bound(), Size, and llvm::MCRegisterInfo::DwarfLLVMRegPair::ToReg.

Referenced by getDwarfRegNum(), llvm::X86AsmInstrumentation::GetFrameRegGeneric(), llvm::prettyPrintRegisterOp(), and printCFIRegister().

◆ getLLVMRegNumFromEH()

int MCRegisterInfo::getLLVMRegNumFromEH ( unsigned RegNum ) const

Map a DWARF EH register back to a target register (same as getLLVMRegNum(RegNum, true)) but return -1 if there is no mapping, rather than asserting that there must be one.

Definition at line 92 of file MCRegisterInfo.cpp.

References llvm::MCRegisterInfo::DwarfLLVMRegPair::FromReg, I, llvm::lower_bound(), Size, and llvm::MCRegisterInfo::DwarfLLVMRegPair::ToReg.

Referenced by getDwarfRegNumFromDwarfEHRegNum(), and printDwarfFileDirective().

◆ getMatchingSuperReg()

unsigned MCRegisterInfo::getMatchingSuperReg	(	unsigned	Reg,
		unsigned	SubIdx,
		const MCRegisterClass *	RC
	)		const

Return a super-register of the specified register Reg so its sub-register of index SubIdx is Reg.

Definition at line 24 of file MCRegisterInfo.cpp.

References llvm::MCRegisterClass::contains(), getSubReg(), and llvm::MCRegisterInfo::DiffListIterator::isValid().

Referenced by llvm::AMDGPUDisassembler::convertMIMGInst(), llvm::TargetRegisterInfo::getMatchingSuperReg(), llvm::ARMInstPrinter::printInst(), and llvm::AArch64InstPrinter::printVectorList().

◆ getName()

const char* llvm::MCRegisterInfo::getName ( unsigned RegNo ) const

inline

Return the human-readable symbolic target-specific name for the specified physical register.

Definition at line 371 of file MCRegisterInfo.h.

References Name.

Referenced by llvm::mca::RegisterFile::addRegisterWrite(), llvm::mca::RegisterFile::cycleStart(), llvm::mca::RegisterFile::dump(), EmitGCCInlineAsmStr(), getCodeViewRegNum(), llvm::HexagonEvaluator::getPhysRegBitWidth(), getRegisterName(), isACalleeSavedRegister(), llvm::prettyPrintRegisterOp(), llvm::printReg(), llvm::printRegUnit(), llvm::HexagonMCChecker::reportBranchErrors(), llvm::HexagonMCChecker::reportErrorNewValue(), llvm::HexagonMCChecker::reportErrorRegisters(), llvm::mca::RegisterFile::tryEliminateMove(), and llvm::mca::verifyOperands().

◆ getNumRegClasses()

unsigned llvm::MCRegisterInfo::getNumRegClasses ( ) const

inline

Definition at line 427 of file MCRegisterInfo.h.

◆ getNumRegs()

unsigned llvm::MCRegisterInfo::getNumRegs ( ) const

inline

Return the number of registers this target has (useful for sizing arrays holding per register information)

Definition at line 377 of file MCRegisterInfo.h.

Referenced by addLiveInRegs(), llvm::MachineFunction::allocateRegMask(), llvm::PPCFrameLowering::assignCalleeSavedSpillSlots(), llvm::ScheduleDAGInstrs::buildSchedGraph(), llvm::calculateDbgEntityHistory(), llvm::CCState::CCState(), llvm::TargetRegisterInfo::checkAllSuperRegsMarked(), llvm::LiveIntervals::checkRegMaskInterference(), llvm::HexagonBlockRanges::computeDeadMap(), llvm::createRegUsageInfoCollector(), CriticalPathStep(), llvm::TargetFrameLowering::determineCalleeSaves(), llvm::mca::RegisterFile::dump(), llvm::HexagonBlockRanges::expandToSubRegs(), llvm::MachineRegisterInfo::freezeReservedRegs(), llvm::rdf::PhysicalRegisterInfo::getAliasSet(), llvm::TargetRegisterInfo::getAllocatableSet(), getCodeViewRegNum(), getDwarfRegNum(), getMOVL(), llvm::rdf::DataFlowGraph::getNextShadow(), llvm::MachineFrameInfo::getPristineRegs(), getSubRegIndex(), llvm::LivePhysRegs::init(), llvm::LiveRegSet::init(), INITIALIZE_PASS(), InstructionStoresToFI(), llvm::MachineOperand::isIdenticalTo(), llvm::LivePhysRegs::LivePhysRegs(), llvm::MachineRegisterInfo::MachineRegisterInfo(), llvm::CriticalAntiDepBreaker::Observe(), llvm::AggressiveAntiDepBreaker::Observe(), llvm::rdf::PhysicalRegisterInfo::PhysicalRegisterInfo(), llvm::PhysicalRegisterUsageInfo::print(), llvm::MachineOperand::print(), printCustomRegMask(), llvm::printReg(), llvm::TargetRegisterInfo::regmaskSubsetEqual(), llvm::InterferenceCache::reinitPhysRegEntries(), llvm::RegisterClassInfo::runOnMachineFunction(), llvm::ExecutionDomainFix::runOnMachineFunction(), llvm::CriticalAntiDepBreaker::StartBlock(), llvm::AggressiveAntiDepBreaker::StartBlock(), and UpdatePredRedefs().

◆ getNumRegUnits()

unsigned llvm::MCRegisterInfo::getNumRegUnits ( ) const

inline

Return the number of (native) register units in the target.

Register units are numbered from 0 to getNumRegUnits() - 1. They can be accessed through MCRegUnitIterator defined below.

Definition at line 391 of file MCRegisterInfo.h.

References getDwarfRegNum().

Referenced by llvm::LiveRegUnits::addRegsInMask(), llvm::LiveRegUnits::init(), INITIALIZE_PASS(), llvm::LiveRegMatrix::LiveRegMatrix(), matchPair(), llvm::rdf::PhysicalRegisterInfo::PhysicalRegisterInfo(), llvm::LiveIntervals::print(), llvm::printRegUnit(), pushDepHeight(), llvm::LiveRegUnits::removeRegsNotPreserved(), llvm::ReachingDefAnalysis::runOnMachineFunction(), and llvm::LiveIntervals::runOnMachineFunction().

◆ getNumSubRegIndices()

unsigned llvm::MCRegisterInfo::getNumSubRegIndices ( ) const

inline

Return the number of sub-register indices understood by the target.

Index 0 is reserved for the no-op sub-register, while 1 to getNumSubRegIndices() - 1 represent real sub-registers.

Definition at line 384 of file MCRegisterInfo.h.

Referenced by llvm::SplitEditor::dump(), llvm::AVRInstPrinter::getPrettyRegisterName(), getSubReg(), getSubRegIdxOffset(), and getSubRegIdxSize().

◆ getProgramCounter()

unsigned llvm::MCRegisterInfo::getProgramCounter ( ) const

inline

Return the register which is the program counter.

Definition at line 328 of file MCRegisterInfo.h.

Referenced by llvm::MCInstrDesc::mayAffectControlFlow().

◆ getRARegister()

unsigned llvm::MCRegisterInfo::getRARegister ( ) const

inline

This method should return the register where the return address can be found.

Definition at line 323 of file MCRegisterInfo.h.

Referenced by llvm::MipsAsmPrinter::emitFrameDirective(), and getCIEVersion().

◆ getRegClass()

const MCRegisterClass& llvm::MCRegisterInfo::getRegClass ( unsigned i ) const

inline

Returns the register class associated with the enumeration value.

See class MCOperandInfo.

Definition at line 433 of file MCRegisterInfo.h.

References assert().

Referenced by llvm::X86_MC::X86MCInstrAnalysis::clearsSuperRegisters(), llvm::AMDGPUDisassembler::convertMIMGInst(), llvm::mca::RegisterFile::cycleStart(), getReg(), llvm::AMDGPU::getRegOperandSize(), getSpecialRegForName(), llvm::AMDGPU::isSGPR(), llvm::MipsRegInfoRecord::MipsRegInfoRecord(), llvm::ARMInstPrinter::printInst(), llvm::AMDGPUInstPrinter::printRegOperand(), and llvm::AArch64InstPrinter::printVectorList().

◆ getRegClassName()

const char* llvm::MCRegisterInfo::getRegClassName ( const MCRegisterClass * Class ) const

inline

Definition at line 438 of file MCRegisterInfo.h.

References llvm::MCRegisterClass::NameIdx.

Referenced by llvm::TargetRegisterInfo::getRegClassName().

◆ getSEHRegNum()

int MCRegisterInfo::getSEHRegNum ( unsigned RegNum ) const

Map a target register to an equivalent SEH register number.

Returns LLVM register number if there is no equivalent value.

Definition at line 120 of file MCRegisterInfo.cpp.

References llvm::DenseMapBase< DerivedT, KeyT, ValueT, KeyInfoT, BucketT >::end(), llvm::DenseMapBase< DerivedT, KeyT, ValueT, KeyInfoT, BucketT >::find(), and I.

◆ getSubReg()

unsigned MCRegisterInfo::getSubReg	(	unsigned	Reg,
		unsigned	Idx
	)		const

Returns the physical register number of sub-register "Index" for physical register RegNo.

Return zero if the sub-register does not exist.

Definition at line 32 of file MCRegisterInfo.cpp.

References assert(), getNumSubRegIndices(), llvm::MCRegisterInfo::DiffListIterator::isValid(), and Reg.

Referenced by llvm::ARMBaseInstrInfo::AddDReg(), addExclusiveRegPair(), addSavedGPR(), AddSubReg(), llvm::X86InstrInfo::breakPartialRegDependency(), llvm::AMDGPUDisassembler::convertMIMGInst(), copyHint(), llvm::SparcInstrInfo::copyPhysReg(), llvm::ARMBaseInstrInfo::copyPhysReg(), CriticalPathStep(), definesFullReg(), llvm::X86InstrInfo::expandPostRAPseudo(), GetDSubRegs(), getImplicitSPRUseForDPRUse(), getMatchingSuperReg(), getPairedGPR(), llvm::AVRInstPrinter::getPrettyRegisterName(), llvm::BitTracker::MachineEvaluator::getRegBitWidth(), INITIALIZE_PASS(), llvm::CoalescerPair::isCoalescable(), llvm::AMDGPU::isSGPR(), llvm::MipsSEInstrInfo::loadImmediate(), loadRegPairFromStackSlot(), llvm::rdf::DataFlowGraph::makeRegRef(), llvm::HexagonAsmPrinter::PrintAsmOperand(), llvm::ARMAsmPrinter::PrintAsmOperand(), llvm::ARMInstPrinter::printGPRPairOperand(), llvm::AArch64InstPrinter::printGPRSeqPairsClassOperand(), llvm::ARMAsmPrinter::printOperand(), llvm::AArch64InstPrinter::printVectorList(), llvm::ARMInstPrinter::printVectorListTwo(), llvm::ARMInstPrinter::printVectorListTwoAllLanes(), llvm::ARMInstPrinter::printVectorListTwoSpaced(), llvm::ARMInstPrinter::printVectorListTwoSpacedAllLanes(), llvm::CoalescerPair::setRegisters(), storeRegPairToStackSlot(), llvm::MachineInstr::substituteRegister(), and llvm::MachineOperand::substPhysReg().

◆ getSubRegIdxOffset()

unsigned MCRegisterInfo::getSubRegIdxOffset ( unsigned Idx ) const

Get the offset of the bit range covered by a sub-register index.

If an Offset doesn't make sense (the index isn't continuous, or is used to access sub-registers at different offsets), return -1.

Definition at line 61 of file MCRegisterInfo.cpp.

References assert(), getNumSubRegIndices(), and llvm::MCRegisterInfo::SubRegCoveredBits::Offset.

Referenced by llvm::DwarfExpression::addMachineReg(), getDwarfRegNum(), and llvm::TargetInstrInfo::getStackSlotRange().

◆ getSubRegIdxSize()

unsigned MCRegisterInfo::getSubRegIdxSize ( unsigned Idx ) const

Get the size of the bit range covered by a sub-register index.

If the index isn't continuous, return the sum of the sizes of its parts. If the index is used to access subregisters of different sizes, return -1.

Definition at line 55 of file MCRegisterInfo.cpp.

References assert(), getNumSubRegIndices(), and llvm::MCRegisterInfo::SubRegCoveredBits::Size.

Referenced by llvm::DwarfExpression::addMachineReg(), llvm::TargetInstrInfo::foldMemoryOperand(), and llvm::TargetInstrInfo::getStackSlotRange().

◆ getSubRegIndex()

unsigned MCRegisterInfo::getSubRegIndex	(	unsigned	RegNo,
		unsigned	SubRegNo
	)		const

For a given register pair, return the sub-register index if the second register is a sub-register of the first.

Return zero otherwise.

Definition at line 44 of file MCRegisterInfo.cpp.

References assert(), getNumRegs(), llvm::MCRegisterInfo::DiffListIterator::isValid(), and Reg.

Referenced by llvm::DwarfExpression::addMachineReg(), CriticalPathStep(), getDwarfRegNum(), INITIALIZE_PASS(), isNopCopy(), and llvm::rdf::PhysicalRegisterInfo::mapTo().

◆ InitMCRegisterInfo()

void llvm::MCRegisterInfo::InitMCRegisterInfo	(	const MCRegisterDesc *	D,
		unsigned	NR,
		unsigned	RA,
		unsigned	PC,
		const MCRegisterClass *	C,
		unsigned	NC,
		const MCPhysReg(*)	RURoots[2],
		unsigned	NRU,
		const MCPhysReg *	DL,
		const LaneBitmask *	RUMS,
		const char *	Strings,
		const char *	ClassStrings,
		const uint16_t *	SubIndices,
		unsigned	NumIndices,
		const SubRegCoveredBits *	SubIdxRanges,
		const uint16_t *	RET
	)

inline

Initialize MCRegisterInfo, called by TableGen auto-generated routines.

DO NOT USE.

Definition at line 239 of file MCRegisterInfo.h.

References C, D, NC, RA, and llvm::ARCISD::RET.

◆ isSubRegister()

bool llvm::MCRegisterInfo::isSubRegister	(	unsigned	RegA,
		unsigned	RegB
	)		const

inline

Returns true if RegB is a sub-register of RegA.

Definition at line 450 of file MCRegisterInfo.h.

Referenced by llvm::MachineInstr::addRegisterDead(), llvm::MachineInstr::addRegisterKilled(), CriticalPathStep(), llvm::MachineInstr::findRegisterDefOperandIdx(), llvm::MCInstrDesc::hasImplicitDefOfPhysReg(), isNopCopy(), and llvm::HexagonMCChecker::reportBranchErrors().

◆ isSubRegisterEq()

bool llvm::MCRegisterInfo::isSubRegisterEq	(	unsigned	RegA,
		unsigned	RegB
	)		const

inline

Returns true if RegB is a sub-register of RegA or if RegB == RegA.

Definition at line 458 of file MCRegisterInfo.h.

Referenced by llvm::MCInstrDesc::hasDefOfPhysReg(), and isMatchingOrAlias().

◆ isSuperOrSubRegisterEq()

bool llvm::MCRegisterInfo::isSuperOrSubRegisterEq	(	unsigned	RegA,
		unsigned	RegB
	)		const

inline

Returns true if RegB is a super-register or sub-register of RegA or if RegB == RegA.

Definition at line 470 of file MCRegisterInfo.h.

◆ isSuperRegister()

bool llvm::MCRegisterInfo::isSuperRegister	(	unsigned	RegA,
		unsigned	RegB
	)		const

inline

Returns true if RegB is a super-register of RegA.

Definition at line 546 of file MCRegisterInfo.h.

References I.

Referenced by llvm::MachineInstr::addRegisterDead(), llvm::MachineInstr::addRegisterKilled(), llvm::ARMBaseInstrInfo::breakPartialRegDependency(), CriticalPathStep(), llvm::mca::RegisterFile::cycleStart(), getDwarfRegNum(), INITIALIZE_PASS(), and InstructionStoresToFI().

◆ isSuperRegisterEq()

bool llvm::MCRegisterInfo::isSuperRegisterEq	(	unsigned	RegA,
		unsigned	RegB
	)		const

inline

Returns true if RegB is a super-register of RegA or if RegB == RegA.

Definition at line 464 of file MCRegisterInfo.h.

Referenced by llvm::MachineOperandIteratorBase::analyzePhysReg().

◆ mapDwarfRegsToLLVMRegs()

void llvm::MCRegisterInfo::mapDwarfRegsToLLVMRegs	(	const DwarfLLVMRegPair *	Map,
		unsigned	Size,
		bool	isEH
	)

inline

Used to initialize Dwarf register to LLVM register number mapping.

Called by TableGen auto-generated routines. DO NOT USE.

Definition at line 297 of file MCRegisterInfo.h.

References Size.

◆ mapLLVMRegsToDwarfRegs()

void llvm::MCRegisterInfo::mapLLVMRegsToDwarfRegs	(	const DwarfLLVMRegPair *	Map,
		unsigned	Size,
		bool	isEH
	)

inline

Used to initialize LLVM register to Dwarf register number mapping.

Called by TableGen auto-generated routines. DO NOT USE.

Definition at line 283 of file MCRegisterInfo.h.

References Size.

◆ mapLLVMRegToCVReg()

void llvm::MCRegisterInfo::mapLLVMRegToCVReg	(	unsigned	LLVMReg,
		int	CVReg
	)

inline

Definition at line 317 of file MCRegisterInfo.h.

Referenced by llvm::AArch64_MC::initLLVMToCVRegMapping(), and llvm::X86_MC::initLLVMToSEHAndCVRegMapping().

◆ mapLLVMRegToSEHReg()

void llvm::MCRegisterInfo::mapLLVMRegToSEHReg	(	unsigned	LLVMReg,
		int	SEHReg
	)

inline

mapLLVMRegToSEHReg - Used to initialize LLVM register to SEH register number mapping.

By default the SEH register number is just the same as the LLVM register number. FIXME: TableGen these numbers. Currently this requires target specific initialization code.

Definition at line 313 of file MCRegisterInfo.h.

Referenced by llvm::X86_MC::initLLVMToSEHAndCVRegMapping().

◆ operator[]()

const MCRegisterDesc& llvm::MCRegisterInfo::operator[] ( unsigned RegNo ) const

inline

Definition at line 332 of file MCRegisterInfo.h.

References assert().

◆ regclass_begin()

regclass_iterator llvm::MCRegisterInfo::regclass_begin ( ) const

inline

Definition at line 421 of file MCRegisterInfo.h.

◆ regclass_end()

regclass_iterator llvm::MCRegisterInfo::regclass_end ( ) const

inline

Definition at line 422 of file MCRegisterInfo.h.

◆ regclasses()

iterator_range<regclass_iterator> llvm::MCRegisterInfo::regclasses ( ) const

inline

Definition at line 423 of file MCRegisterInfo.h.

References llvm::make_range().

Friends And Related Function Documentation

◆ MCRegUnitIterator

friend class MCRegUnitIterator

friend

Definition at line 233 of file MCRegisterInfo.h.

◆ MCRegUnitMaskIterator

friend class MCRegUnitMaskIterator

friend

Definition at line 234 of file MCRegisterInfo.h.

◆ MCRegUnitRootIterator

friend class MCRegUnitRootIterator

friend

Definition at line 235 of file MCRegisterInfo.h.

◆ MCSubRegIndexIterator

friend class MCSubRegIndexIterator

friend

Definition at line 231 of file MCRegisterInfo.h.

◆ MCSubRegIterator

friend class MCSubRegIterator

friend

Definition at line 230 of file MCRegisterInfo.h.

◆ MCSuperRegIterator

friend class MCSuperRegIterator

friend

Definition at line 232 of file MCRegisterInfo.h.

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

include/llvm/MC/MCRegisterInfo.h
lib/MC/MCRegisterInfo.cpp

Classes

Public Types

Public Member Functions

Friends

Detailed Description

Member Typedef Documentation

◆ regclass_iterator

Member Function Documentation

◆ get()

◆ getCodeViewRegNum()

◆ getDwarfRegNum()

◆ getDwarfRegNumFromDwarfEHRegNum()

◆ getEncodingValue()

◆ getLLVMRegNum()

◆ getLLVMRegNumFromEH()

◆ getMatchingSuperReg()

◆ getName()

◆ getNumRegClasses()

◆ getNumRegs()

◆ getNumRegUnits()

◆ getNumSubRegIndices()

◆ getProgramCounter()

◆ getRARegister()

◆ getRegClass()

◆ getRegClassName()

◆ getSEHRegNum()

◆ getSubReg()

◆ getSubRegIdxOffset()

◆ getSubRegIdxSize()

◆ getSubRegIndex()

◆ InitMCRegisterInfo()

◆ isSubRegister()

◆ isSubRegisterEq()

◆ isSuperOrSubRegisterEq()

◆ isSuperRegister()

◆ isSuperRegisterEq()

◆ mapDwarfRegsToLLVMRegs()

◆ mapLLVMRegsToDwarfRegs()

◆ mapLLVMRegToCVReg()

◆ mapLLVMRegToSEHReg()

◆ operator[]()

◆ regclass_begin()

◆ regclass_end()

◆ regclasses()

Friends And Related Function Documentation

◆ MCRegUnitIterator

◆ MCRegUnitMaskIterator

◆ MCRegUnitRootIterator

◆ MCSubRegIndexIterator

◆ MCSubRegIterator

◆ MCSuperRegIterator