llvm::RISCVInstrInfo Class Reference

#include "Target/RISCV/RISCVInstrInfo.h"

Inheritance diagram for llvm::RISCVInstrInfo:

Public Member Functions
	RISCVInstrInfo (const RISCVSubtarget &STI)
const RISCVRegisterInfo &	getRegisterInfo () const
MCInst	getNop () const override
Register	isLoadFromStackSlot (const MachineInstr &MI, int &FrameIndex) const override
Register	isLoadFromStackSlot (const MachineInstr &MI, int &FrameIndex, TypeSize &MemBytes) const override
Register	isStoreToStackSlot (const MachineInstr &MI, int &FrameIndex) const override
Register	isStoreToStackSlot (const MachineInstr &MI, int &FrameIndex, TypeSize &MemBytes) const override
bool	isReMaterializableImpl (const MachineInstr &MI) const override
bool	shouldBreakCriticalEdgeToSink (MachineInstr &MI) const override
void	copyPhysRegVector (MachineBasicBlock &MBB, MachineBasicBlock::iterator MBBI, const DebugLoc &DL, MCRegister DstReg, MCRegister SrcReg, bool KillSrc, const TargetRegisterClass *RegClass) const
void	copyPhysReg (MachineBasicBlock &MBB, MachineBasicBlock::iterator MBBI, const DebugLoc &DL, Register DstReg, Register SrcReg, bool KillSrc, bool RenamableDest=false, bool RenamableSrc=false) const override
void	storeRegToStackSlot (MachineBasicBlock &MBB, MachineBasicBlock::iterator MBBI, Register SrcReg, bool IsKill, int FrameIndex, const TargetRegisterClass *RC, Register VReg, MachineInstr::MIFlag Flags=MachineInstr::NoFlags) const override
void	loadRegFromStackSlot (MachineBasicBlock &MBB, MachineBasicBlock::iterator MBBI, Register DstReg, int FrameIndex, const TargetRegisterClass *RC, Register VReg, unsigned SubReg=0, MachineInstr::MIFlag Flags=MachineInstr::NoFlags) const override
MachineInstr *	foldMemoryOperandImpl (MachineFunction &MF, MachineInstr &MI, ArrayRef< unsigned > Ops, int FrameIndex, MachineInstr *&CopyMI, LiveIntervals *LIS=nullptr, VirtRegMap *VRM=nullptr) const override
MachineInstr *	foldMemoryOperandImpl (MachineFunction &MF, MachineInstr &MI, ArrayRef< unsigned > Ops, MachineInstr &LoadMI, MachineInstr *&CopyMI, LiveIntervals *LIS=nullptr, VirtRegMap *VRM=nullptr) const override
void	movImm (MachineBasicBlock &MBB, MachineBasicBlock::iterator MBBI, const DebugLoc &DL, Register DstReg, uint64_t Val, MachineInstr::MIFlag Flag=MachineInstr::NoFlags, bool DstRenamable=false, bool DstIsDead=false) const
unsigned	getInstSizeInBytes (const MachineInstr &MI) const override
bool	analyzeBranch (MachineBasicBlock &MBB, MachineBasicBlock *&TBB, MachineBasicBlock *&FBB, SmallVectorImpl< MachineOperand > &Cond, bool AllowModify) const override
unsigned	insertBranch (MachineBasicBlock &MBB, MachineBasicBlock *TBB, MachineBasicBlock *FBB, ArrayRef< MachineOperand > Cond, const DebugLoc &dl, int *BytesAdded=nullptr) const override
void	insertIndirectBranch (MachineBasicBlock &MBB, MachineBasicBlock &NewDestBB, MachineBasicBlock &RestoreBB, const DebugLoc &DL, int64_t BrOffset, RegScavenger *RS) const override
unsigned	removeBranch (MachineBasicBlock &MBB, int *BytesRemoved=nullptr) const override
bool	reverseBranchCondition (SmallVectorImpl< MachineOperand > &Cond) const override
bool	optimizeCondBranch (MachineInstr &MI) const override
MachineBasicBlock *	getBranchDestBlock (const MachineInstr &MI) const override
bool	isBranchOffsetInRange (unsigned BranchOpc, int64_t BrOffset) const override
MachineInstr *	optimizeSelect (MachineInstr &MI, SmallPtrSetImpl< MachineInstr * > &SeenMIs, bool) const override
bool	isAsCheapAsAMove (const MachineInstr &MI) const override
std::optional< DestSourcePair >	isCopyInstrImpl (const MachineInstr &MI) const override
bool	verifyInstruction (const MachineInstr &MI, StringRef &ErrInfo) const override
bool	canFoldIntoAddrMode (const MachineInstr &MemI, Register Reg, const MachineInstr &AddrI, ExtAddrMode &AM) const override
MachineInstr *	emitLdStWithAddr (MachineInstr &MemI, const ExtAddrMode &AM) const override
bool	getMemOperandsWithOffsetWidth (const MachineInstr &MI, SmallVectorImpl< const MachineOperand * > &BaseOps, int64_t &Offset, bool &OffsetIsScalable, LocationSize &Width, const TargetRegisterInfo *TRI) const override
bool	shouldClusterMemOps (ArrayRef< const MachineOperand * > BaseOps1, int64_t Offset1, bool OffsetIsScalable1, ArrayRef< const MachineOperand * > BaseOps2, int64_t Offset2, bool OffsetIsScalable2, unsigned ClusterSize, unsigned NumBytes) const override
bool	getMemOperandWithOffsetWidth (const MachineInstr &LdSt, const MachineOperand *&BaseOp, int64_t &Offset, LocationSize &Width, const TargetRegisterInfo *TRI) const
bool	areMemAccessesTriviallyDisjoint (const MachineInstr &MIa, const MachineInstr &MIb) const override
std::pair< unsigned, unsigned >	decomposeMachineOperandsTargetFlags (unsigned TF) const override
ArrayRef< std::pair< unsigned, const char * > >	getSerializableDirectMachineOperandTargetFlags () const override
bool	isFunctionSafeToOutlineFrom (MachineFunction &MF, bool OutlineFromLinkOnceODRs) const override
bool	isMBBSafeToOutlineFrom (MachineBasicBlock &MBB, unsigned &Flags) const override
bool	shouldOutlineFromFunctionByDefault (MachineFunction &MF) const override
bool	analyzeCandidate (outliner::Candidate &C) const
std::optional< std::unique_ptr< outliner::OutlinedFunction > >	getOutliningCandidateInfo (const MachineModuleInfo &MMI, std::vector< outliner::Candidate > &RepeatedSequenceLocs, unsigned MinRepeats) const override
outliner::InstrType	getOutliningTypeImpl (const MachineModuleInfo &MMI, MachineBasicBlock::iterator &MBBI, unsigned Flags) const override
void	buildOutlinedFrame (MachineBasicBlock &MBB, MachineFunction &MF, const outliner::OutlinedFunction &OF) const override
MachineBasicBlock::iterator	insertOutlinedCall (Module &M, MachineBasicBlock &MBB, MachineBasicBlock::iterator &It, MachineFunction &MF, outliner::Candidate &C) const override
void	buildClearRegister (Register Reg, MachineBasicBlock &MBB, MachineBasicBlock::iterator Iter, DebugLoc &DL, bool AllowSideEffects=true) const override
std::optional< RegImmPair >	isAddImmediate (const MachineInstr &MI, Register Reg) const override
bool	findCommutedOpIndices (const MachineInstr &MI, unsigned &SrcOpIdx1, unsigned &SrcOpIdx2) const override
MachineInstr *	commuteInstructionImpl (MachineInstr &MI, bool NewMI, unsigned OpIdx1, unsigned OpIdx2) const override
bool	simplifyInstruction (MachineInstr &MI) const override
MachineInstr *	convertToThreeAddress (MachineInstr &MI, LiveVariables *LV, LiveIntervals *LIS) const override
std::string	createMIROperandComment (const MachineInstr &MI, const MachineOperand &Op, unsigned OpIdx, const TargetRegisterInfo *TRI) const override
void	mulImm (MachineFunction &MF, MachineBasicBlock &MBB, MachineBasicBlock::iterator II, const DebugLoc &DL, Register DestReg, uint32_t Amt, MachineInstr::MIFlag Flag) const
	Generate code to multiply the value in DestReg by Amt - handles all the common optimizations for this idiom, and supports fallback for subtargets which don't support multiply instructions.
bool	useMachineCombiner () const override
MachineTraceStrategy	getMachineCombinerTraceStrategy () const override
CombinerObjective	getCombinerObjective (unsigned Pattern) const override
bool	getMachineCombinerPatterns (MachineInstr &Root, SmallVectorImpl< unsigned > &Patterns, bool DoRegPressureReduce) const override
void	finalizeInsInstrs (MachineInstr &Root, unsigned &Pattern, SmallVectorImpl< MachineInstr * > &InsInstrs) const override
void	genAlternativeCodeSequence (MachineInstr &Root, unsigned Pattern, SmallVectorImpl< MachineInstr * > &InsInstrs, SmallVectorImpl< MachineInstr * > &DelInstrs, DenseMap< Register, unsigned > &InstrIdxForVirtReg) const override
bool	hasReassociableOperands (const MachineInstr &Inst, const MachineBasicBlock *MBB) const override
bool	hasReassociableSibling (const MachineInstr &Inst, bool &Commuted) const override
bool	isAssociativeAndCommutative (const MachineInstr &Inst, bool Invert) const override
std::optional< unsigned >	getInverseOpcode (unsigned Opcode) const override
void	getReassociateOperandIndices (const MachineInstr &Root, unsigned Pattern, std::array< unsigned, 5 > &OperandIndices) const override
ArrayRef< std::pair< MachineMemOperand::Flags, const char * > >	getSerializableMachineMemOperandTargetFlags () const override
unsigned	getTailDuplicateSize (CodeGenOptLevel OptLevel) const override
std::unique_ptr< TargetInstrInfo::PipelinerLoopInfo >	analyzeLoopForPipelining (MachineBasicBlock *LoopBB) const override
bool	isHighLatencyDef (int Opc) const override
bool	isVRegCopy (const MachineInstr *MI, unsigned LMul=0) const
	Return true if MI is a COPY to a vector register of a specific LMul, or any kind of vector registers when LMul is zero.
bool	requiresNTLHint (const MachineInstr &MI) const
	Return true if the instruction requires an NTL hint to be emitted.

Static Public Member Functions
static bool	isSafeToMove (const MachineInstr &From, const MachineBasicBlock::iterator &To)
	Return true if moving From down to To won't cause any physical register reads or writes to be clobbered and no visible side effects are affected.
static bool	isPairableLdStInstOpc (unsigned Opc)
	Return true if pairing the given load or store may be paired with another.
static bool	isLdStSafeToPair (const MachineInstr &LdSt, const TargetRegisterInfo *TRI)
static RISCVCC::CondCode	getCondFromBranchOpc (unsigned Opc)
static bool	evaluateCondBranch (RISCVCC::CondCode CC, int64_t C0, int64_t C1)
	Return the result of the evaluation of C0 CC C1, where CC is a RISCVCC::CondCode.
static bool	isFromLoadImm (const MachineRegisterInfo &MRI, const MachineOperand &Op, int64_t &Imm)
	Return true if the operand is a load immediate instruction and sets Imm to the immediate value.

Protected Attributes
const RISCVSubtarget &	STI

Detailed Description

Definition at line 81 of file RISCVInstrInfo.h.

Constructor & Destructor Documentation

RISCVInstrInfo()

RISCVInstrInfo::RISCVInstrInfo ( const RISCVSubtarget & STI )

explicit

Definition at line 88 of file RISCVInstrInfo.cpp.

References STI.

Member Function Documentation

analyzeBranch()

bool RISCVInstrInfo::analyzeBranch ( MachineBasicBlock & MBB, MachineBasicBlock *& TBB, MachineBasicBlock *& FBB, SmallVectorImpl< MachineOperand > & Cond, bool AllowModify ) const

override

Definition at line 1376 of file RISCVInstrInfo.cpp.

References Cond, getBranchDestBlock(), llvm::MachineInstrBundleIterator< Ty, IsReverse >::getReverse(), I, MBB, parseCondBranch(), and TBB.

Referenced by analyzeLoopForPipelining().

analyzeCandidate()

bool RISCVInstrInfo::analyzeCandidate

(

outliner::Candidate &

C

)

const

Definition at line 3741 of file RISCVInstrInfo.cpp.

References assert(), C(), cannotInsertTailCall(), llvm::dbgs(), findRegisterToSaveX5To(), llvm::RISCVII::getTailExpandUseRegNo(), LLVM_DEBUG, OutlinerEnableRegSave, and STI.

Referenced by getOutliningCandidateInfo().

analyzeLoopForPipelining()

std::unique_ptr< TargetInstrInfo::PipelinerLoopInfo > RISCVInstrInfo::analyzeLoopForPipelining ( MachineBasicBlock * LoopBB ) const

override

Definition at line 5403 of file RISCVInstrInfo.cpp.

References analyzeBranch(), assert(), Cond, llvm::MachineBasicBlock::getParent(), llvm::MachineFunction::getRegInfo(), llvm::MachineRegisterInfo::getVRegDef(), reverseBranchCondition(), and TBB.

areMemAccessesTriviallyDisjoint()

bool RISCVInstrInfo::areMemAccessesTriviallyDisjoint ( const MachineInstr & MIa, const MachineInstr & MIb ) const

override

Definition at line 3576 of file RISCVInstrInfo.cpp.

References assert(), getMemOperandWithOffsetWidth(), llvm::LocationSize::getValue(), llvm::MachineInstr::hasOrderedMemoryRef(), llvm::MachineInstr::hasUnmodeledSideEffects(), llvm::LocationSize::hasValue(), llvm::MachineOperand::isIdenticalTo(), llvm::MachineInstr::mayLoadOrStore(), llvm::LocationSize::precise(), STI, and TRI.

buildClearRegister()

void RISCVInstrInfo::buildClearRegister ( Register Reg, MachineBasicBlock & MBB, MachineBasicBlock::iterator Iter, DebugLoc & DL, bool AllowSideEffects = true ) const

override

Definition at line 3970 of file RISCVInstrInfo.cpp.

References llvm::BuildMI(), contains(), DL, llvm::get(), MBB, llvm::reportFatalInternalError(), STI, and TRI.

buildOutlinedFrame()

void RISCVInstrInfo::buildOutlinedFrame ( MachineBasicBlock & MBB, MachineFunction & MF, const outliner::OutlinedFunction & OF ) const

override

Definition at line 3909 of file RISCVInstrInfo.cpp.

References llvm::BuildMI(), llvm::dwarf_linker::DebugLoc, llvm::Define, llvm::get(), MachineOutlinerTailCall, and MBB.

canFoldIntoAddrMode()

bool RISCVInstrInfo::canFoldIntoAddrMode ( const MachineInstr & MemI, Register Reg, const MachineInstr & AddrI, ExtAddrMode & AM ) const

override

Definition at line 3332 of file RISCVInstrInfo.cpp.

References llvm::ExtAddrMode::BaseReg, llvm::ExtAddrMode::Basic, llvm::ExtAddrMode::Displacement, llvm::ExtAddrMode::Form, llvm::MachineOperand::getImm(), llvm::MachineInstr::getOpcode(), llvm::MachineInstr::getOperand(), llvm::MachineOperand::getReg(), llvm::MachineOperand::isImm(), llvm::isInt(), llvm::MachineOperand::isReg(), llvm::ExtAddrMode::Scale, llvm::ExtAddrMode::ScaledReg, llvm::SignExtend64(), and STI.

commuteInstructionImpl()

MachineInstr * RISCVInstrInfo::commuteInstructionImpl ( MachineInstr & MI, bool NewMI, unsigned OpIdx1, unsigned OpIdx2 ) const

override

Definition at line 4419 of file RISCVInstrInfo.cpp.

References assert(), CASE_VFMA_CHANGE_OPCODE_SPLATS, CASE_VFMA_CHANGE_OPCODE_VV, CASE_VFMA_OPCODE_VV, CASE_VFMA_SPLATS, CASE_VMA_CHANGE_OPCODE_LMULS, CASE_VMA_OPCODE_LMULS, llvm::TargetInstrInfo::commuteInstructionImpl(), llvm::FMSUB, llvm::FNMADD, llvm::FNMSUB, llvm::get(), llvm::RISCVCC::getInverseBranchOpcode(), getInverseXqcicmOpcode(), llvm_unreachable, MI, and Opc.

convertToThreeAddress()

MachineInstr * RISCVInstrInfo::convertToThreeAddress ( MachineInstr & MI, LiveVariables * LV, LiveIntervals * LIS ) const

override

Definition at line 4892 of file RISCVInstrInfo.cpp.

References AbstractManglingParser< Derived, Alloc >::NumOps, llvm::MachineInstrBuilder::add(), llvm::MachineInstrBuilder::addReg(), assert(), llvm::BuildMI(), CASE_FP_WIDEOP_CHANGE_OPCODE_LMULS, CASE_FP_WIDEOP_CHANGE_OPCODE_LMULS_ALT, CASE_FP_WIDEOP_OPCODE_LMULS, CASE_FP_WIDEOP_OPCODE_LMULS_ALT, CASE_WIDEOP_CHANGE_OPCODE_LMULS, CASE_WIDEOP_OPCODE_LMULS, llvm::MachineInstrBuilder::copyImplicitOps(), llvm::LiveRange::Segment::end, llvm::get(), llvm::LiveIntervals::getInterval(), llvm::SlotIndex::getRegSlot(), llvm::LiveRange::getSegmentContaining(), llvm::RISCVII::getVecPolicyOpNum(), llvm::RISCVII::hasVecPolicyOp(), I, llvm_unreachable, MBB, MI, llvm::LiveVariables::replaceKillInstruction(), llvm::LiveIntervals::ReplaceMachineInstrInMaps(), and llvm::Undef.

copyPhysReg()

void RISCVInstrInfo::copyPhysReg ( MachineBasicBlock & MBB, MachineBasicBlock::iterator MBBI, const DebugLoc & DL, Register DstReg, Register SrcReg, bool KillSrc, bool RenamableDest = false, bool RenamableSrc = false ) const

override

Definition at line 510 of file RISCVInstrInfo.cpp.

References llvm::MachineInstrBuilder::addImm(), llvm::MachineInstrBuilder::addReg(), assert(), llvm::BuildMI(), contains(), copyPhysRegVector(), DL, llvm::get(), llvm::getKillRegState(), llvm::getRenamableRegState(), llvm::RISCVRegisterInfo::isRVVRegClass(), llvm_unreachable, MBB, MBBI, Opc, STI, and TRI.

copyPhysRegVector()

void RISCVInstrInfo::copyPhysRegVector	(	MachineBasicBlock &	MBB,
		MachineBasicBlock::iterator	MBBI,
		const DebugLoc &	DL,
		MCRegister	DstReg,
		MCRegister	SrcReg,
		bool	KillSrc,
		const TargetRegisterClass *	RegClass ) const

Definition at line 387 of file RISCVInstrInfo.cpp.

References _, assert(), llvm::BuildMI(), llvm::RISCVVType::decodeVLMUL(), DL, forwardCopyWillClobberTuple(), llvm::get(), llvm::getKillRegState(), llvm::RISCVRI::getLMul(), llvm::RISCVRI::getNF(), llvm::RISCV::getRVVMCOpcode(), llvm::RISCVII::getSEWOpNum(), llvm::RISCVII::getVLOpNum(), I, llvm::Implicit, isConvertibleToVMV_V_V(), llvm::RISCVVType::LMUL_1, llvm::RISCVVType::LMUL_2, llvm::RISCVVType::LMUL_4, llvm::RISCVVType::LMUL_8, MBB, MBBI, Opc, STI, TRI, llvm::MCRegisterClass::TSFlags, and llvm::Undef.

Referenced by copyPhysReg().

createMIROperandComment()

std::string RISCVInstrInfo::createMIROperandComment ( const MachineInstr & MI, const MachineOperand & Op, unsigned OpIdx, const TargetRegisterInfo * TRI ) const

override

Definition at line 4012 of file RISCVInstrInfo.cpp.

References assert(), llvm::TargetInstrInfo::createMIROperandComment(), Imm, llvm::RISCVFPRndMode::isValidRoundingMode(), llvm::RISCVVXRndMode::isValidRoundingMode(), llvm::RISCVVType::isValidSEW(), llvm::RISCVVType::MASK_AGNOSTIC, MI, llvm::RISCVOp::OPERAND_AVL, llvm::RISCVOp::OPERAND_SEW, llvm::RISCVOp::OPERAND_SEW_MASK, llvm::RISCVOp::OPERAND_VEC_POLICY, llvm::RISCVOp::OPERAND_VEC_RM, llvm::RISCVOp::OPERAND_VTYPEI10, llvm::RISCVOp::OPERAND_VTYPEI11, llvm::RISCVOp::OPERAND_XSFMM_TWIDEN, llvm::RISCVOp::OPERAND_XSFMM_VTYPE, llvm::RISCVVType::printVType(), llvm::RISCVVType::printXSfmmVType(), llvm::RISCVFPRndMode::roundingModeToString(), llvm::RISCVVXRndMode::roundingModeToString(), llvm::RISCVVType::TAIL_AGNOSTIC, TRI, and llvm::RISCVII::usesVXRM().

decomposeMachineOperandsTargetFlags()

std::pair< unsigned, unsigned > RISCVInstrInfo::decomposeMachineOperandsTargetFlags ( unsigned TF ) const

override

Definition at line 3610 of file RISCVInstrInfo.cpp.

References llvm::RISCVII::MO_DIRECT_FLAG_MASK.

emitLdStWithAddr()

MachineInstr * RISCVInstrInfo::emitLdStWithAddr ( MachineInstr & MemI, const ExtAddrMode & AM ) const

override

Definition at line 3388 of file RISCVInstrInfo.cpp.

References llvm::MachineInstrBuilder::addImm(), llvm::MachineInstrBuilder::addReg(), assert(), llvm::ExtAddrMode::BaseReg, llvm::BuildMI(), llvm::ExtAddrMode::Displacement, DL, llvm::get(), llvm::MachineInstr::getDebugLoc(), llvm::getDefRegState(), llvm::MachineInstr::getFlags(), llvm::MachineInstr::getOpcode(), llvm::MachineInstr::getOperand(), llvm::MachineInstr::getParent(), llvm::MachineOperand::getReg(), llvm::MachineInstr::mayLoad(), MBB, llvm::MachineInstr::memoperands(), llvm::ExtAddrMode::Scale, llvm::ExtAddrMode::ScaledReg, llvm::MachineInstrBuilder::setMemRefs(), and llvm::MachineInstrBuilder::setMIFlags().

evaluateCondBranch()

bool RISCVInstrInfo::evaluateCondBranch ( RISCVCC::CondCode CC, int64_t C0, int64_t C1 )

static

Return the result of the evaluation of C0 CC C1, where CC is a RISCVCC::CondCode.

Definition at line 1121 of file RISCVInstrInfo.cpp.

References llvm::RISCVCC::COND_EQ, llvm::RISCVCC::COND_GE, llvm::RISCVCC::COND_GEU, llvm::RISCVCC::COND_LT, llvm::RISCVCC::COND_LTU, llvm::RISCVCC::COND_NE, and llvm_unreachable.

Referenced by INITIALIZE_PASS(), and optimizeCondBranch().

finalizeInsInstrs()

void RISCVInstrInfo::finalizeInsInstrs ( MachineInstr & Root, unsigned & Pattern, SmallVectorImpl< MachineInstr * > & InsInstrs ) const

override

Definition at line 2212 of file RISCVInstrInfo.cpp.

References llvm::MachineInstrBuilder::add(), llvm::MachineInstrBuilder::addUse(), llvm::all_of(), assert(), llvm::RISCVFPRndMode::DYN, llvm::MachineOperand::getImm(), llvm::MachineInstr::getMF(), llvm::MachineInstr::getOpcode(), llvm::MachineInstr::getOperand(), llvm::Implicit, and MI.

findCommutedOpIndices()

bool RISCVInstrInfo::findCommutedOpIndices ( const MachineInstr & MI, unsigned & SrcOpIdx1, unsigned & SrcOpIdx2 ) const

override

Definition at line 4175 of file RISCVInstrInfo.cpp.

References assert(), CASE_RVV_OPCODE, CASE_RVV_OPCODE_LMUL, CASE_RVV_OPCODE_MASK, CASE_RVV_OPCODE_UNMASK, CASE_RVV_OPCODE_WIDEN, CASE_VFMA_OPCODE_VV, CASE_VFMA_SPLATS, CASE_VMA_OPCODE_LMULS, llvm::TargetInstrInfo::findCommutedOpIndices(), llvm::FMSUB, llvm::FNMADD, llvm::FNMSUB, llvm::RISCVII::getVecPolicyOpNum(), llvm::RISCVII::hasVecPolicyOp(), llvm::M1(), and MI.

foldMemoryOperandImpl() [1/2]

MachineInstr * RISCVInstrInfo::foldMemoryOperandImpl ( MachineFunction & MF, MachineInstr & MI, ArrayRef< unsigned > Ops, int FrameIndex, MachineInstr *& CopyMI, LiveIntervals * LIS = nullptr, VirtRegMap * VRM = nullptr ) const

override

Definition at line 921 of file RISCVInstrInfo.cpp.

References AbstractManglingParser< Derived, Alloc >::Ops, llvm::MachineInstrBuilder::addFrameIndex(), llvm::MachineInstrBuilder::addImm(), llvm::BuildMI(), llvm::get(), getFoldedOpcode(), MI, and STI.

foldMemoryOperandImpl() [2/2]

MachineInstr * RISCVInstrInfo::foldMemoryOperandImpl ( MachineFunction & MF, MachineInstr & MI, ArrayRef< unsigned > Ops, MachineInstr & LoadMI, MachineInstr *& CopyMI, LiveIntervals * LIS = nullptr, VirtRegMap * VRM = nullptr ) const

override

Definition at line 967 of file RISCVInstrInfo.cpp.

References AbstractManglingParser< Derived, Alloc >::Ops, llvm::MachineInstrBuilder::add(), llvm::MachineInstrBuilder::addImm(), llvm::BuildMI(), llvm::MachineInstrBuilder::cloneMemRefs(), llvm::MachineRegisterInfo::constrainRegClass(), llvm::get(), llvm::MachineInstr::getDesc(), llvm::RISCVCC::getInverseBranchOpcode(), getLoadPredicatedOpcode(), llvm::MCInstrDesc::getNumOperands(), llvm::MachineInstr::getOpcode(), llvm::MachineInstr::getOperand(), llvm::MachineOperand::getReg(), llvm::MachineRegisterInfo::getRegClass(), llvm::MachineFunction::getRegInfo(), MI, and STI.

genAlternativeCodeSequence()

void RISCVInstrInfo::genAlternativeCodeSequence ( MachineInstr & Root, unsigned Pattern, SmallVectorImpl< MachineInstr * > & InsInstrs, SmallVectorImpl< MachineInstr * > & DelInstrs, DenseMap< Register, unsigned > & InstrIdxForVirtReg ) const

override

Definition at line 2956 of file RISCVInstrInfo.cpp.

References combineFPFusedMultiply(), llvm::FMADD_AX, llvm::FMADD_XA, llvm::FMSUB, llvm::FNMSUB, llvm::TargetInstrInfo::genAlternativeCodeSequence(), genShXAddAddShift(), llvm::MachineInstr::getMF(), llvm::MachineInstr::getOperand(), llvm::MachineOperand::getReg(), llvm::MachineFunction::getRegInfo(), llvm::MachineRegisterInfo::getVRegDef(), llvm::SHXADD_ADD_SLLI_OP1, and llvm::SHXADD_ADD_SLLI_OP2.

getBranchDestBlock()

MachineBasicBlock * RISCVInstrInfo::getBranchDestBlock ( const MachineInstr & MI ) const

override

Definition at line 1768 of file RISCVInstrInfo.cpp.

References assert(), and MI.

Referenced by analyzeBranch().

getCombinerObjective()

CombinerObjective RISCVInstrInfo::getCombinerObjective ( unsigned Pattern ) const

override

Definition at line 2791 of file RISCVInstrInfo.cpp.

References llvm::FMADD_AX, llvm::FMADD_XA, llvm::FMSUB, llvm::FNMSUB, llvm::TargetInstrInfo::getCombinerObjective(), and llvm::MustReduceDepth.

getCondFromBranchOpc()

RISCVCC::CondCode RISCVInstrInfo::getCondFromBranchOpc ( unsigned Opc )

static

Definition at line 1082 of file RISCVInstrInfo.cpp.

References llvm::RISCVCC::COND_EQ, llvm::RISCVCC::COND_GE, llvm::RISCVCC::COND_GEU, llvm::RISCVCC::COND_INVALID, llvm::RISCVCC::COND_LT, llvm::RISCVCC::COND_LTU, llvm::RISCVCC::COND_NE, and Opc.

Referenced by INITIALIZE_PASS(), and optimizeCondBranch().

getInstSizeInBytes()

unsigned RISCVInstrInfo::getInstSizeInBytes ( const MachineInstr & MI ) const

override

Definition at line 1991 of file RISCVInstrInfo.cpp.

References F, llvm::get(), llvm::MachineFunction::getFunction(), llvm::TargetMachine::getMCAsmInfo(), llvm::PatchPointOpers::getNumPatchBytes(), llvm::StackMapOpers::getNumPatchBytes(), llvm::StatepointOpers::getNumPatchBytes(), llvm::MachineFunction::getTarget(), MI, requiresNTLHint(), and STI.

Referenced by getOutliningCandidateInfo(), insertBranch(), and removeBranch().

getInverseOpcode()

std::optional< unsigned > RISCVInstrInfo::getInverseOpcode ( unsigned Opcode ) const

override

Definition at line 2573 of file RISCVInstrInfo.cpp.

References RVV_OPC_LMUL_CASE, and RVV_OPC_LMUL_MASK_CASE.

Referenced by isAssociativeAndCommutative().

getMachineCombinerPatterns()

bool RISCVInstrInfo::getMachineCombinerPatterns ( MachineInstr & Root, SmallVectorImpl< unsigned > & Patterns, bool DoRegPressureReduce ) const

override

Definition at line 2803 of file RISCVInstrInfo.cpp.

References getFPPatterns(), llvm::TargetInstrInfo::getMachineCombinerPatterns(), and getSHXADDPatterns().

getMachineCombinerTraceStrategy()

MachineTraceStrategy RISCVInstrInfo::getMachineCombinerTraceStrategy ( ) const

override

Definition at line 2198 of file RISCVInstrInfo.cpp.

References ForceMachineCombinerStrategy, STI, llvm::TS_Local, and llvm::TS_MinInstrCount.

getMemOperandsWithOffsetWidth()

bool RISCVInstrInfo::getMemOperandsWithOffsetWidth ( const MachineInstr & MI, SmallVectorImpl< const MachineOperand * > & BaseOps, int64_t & Offset, bool & OffsetIsScalable, LocationSize & Width, const TargetRegisterInfo * TRI ) const

override

Definition at line 3441 of file RISCVInstrInfo.cpp.

References getMemOperandWithOffsetWidth(), llvm::MachineInstr::getOpcode(), llvm::MachineInstr::mayLoadOrStore(), llvm::Offset, llvm::SmallVectorTemplateBase< T, bool >::push_back(), and TRI.

getMemOperandWithOffsetWidth()

bool RISCVInstrInfo::getMemOperandWithOffsetWidth	(	const MachineInstr &	LdSt,
		const MachineOperand *&	BaseOp,
		int64_t &	Offset,
		LocationSize &	Width,
		const TargetRegisterInfo *	TRI ) const

Definition at line 3552 of file RISCVInstrInfo.cpp.

References llvm::MachineOperand::getImm(), llvm::MachineInstr::getNumExplicitOperands(), llvm::MachineInstr::getOperand(), llvm::MachineInstr::hasOneMemOperand(), llvm::MachineOperand::isFI(), llvm::MachineOperand::isImm(), llvm::MachineOperand::isReg(), llvm::MachineInstr::mayLoadOrStore(), llvm::MachineInstr::memoperands_begin(), llvm::Offset, and TRI.

Referenced by areMemAccessesTriviallyDisjoint(), and getMemOperandsWithOffsetWidth().

getNop()

MCInst RISCVInstrInfo::getNop ( ) const

override

Definition at line 96 of file RISCVInstrInfo.cpp.

References llvm::MCInstBuilder::addImm(), llvm::MCInstBuilder::addReg(), and STI.

getOutliningCandidateInfo()

std::optional< std::unique_ptr< outliner::OutlinedFunction > > RISCVInstrInfo::getOutliningCandidateInfo ( const MachineModuleInfo & MMI, std::vector< outliner::Candidate > & RepeatedSequenceLocs, unsigned MinRepeats ) const

override

Definition at line 3783 of file RISCVInstrInfo.cpp.

References analyzeCandidate(), llvm::outliner::Candidate::back(), C(), llvm::erase_if(), getInstSizeInBytes(), llvm::outliner::Candidate::getMF(), llvm::MachineFunction::getSubtarget(), I, llvm::MachineInstr::isReturn(), MachineOutlinerDefault, MachineOutlinerRegSave, MachineOutlinerTailCall, MI, and OutlinerEnableRegSave.

getOutliningTypeImpl()

outliner::InstrType RISCVInstrInfo::getOutliningTypeImpl ( const MachineModuleInfo & MMI, MachineBasicBlock::iterator & MBBI, unsigned Flags ) const

override

Definition at line 3873 of file RISCVInstrInfo.cpp.

References cannotInsertTailCall(), F, llvm::outliner::Illegal, isMIModifiesReg(), llvm::outliner::Legal, MBB, MBBI, MI, llvm::RISCVII::MO_PCREL_LO, and TRI.

getReassociateOperandIndices()

void RISCVInstrInfo::getReassociateOperandIndices ( const MachineInstr & Root, unsigned Pattern, std::array< unsigned, 5 > & OperandIndices ) const

override

Definition at line 2483 of file RISCVInstrInfo.cpp.

References llvm::MachineInstr::getOpcode(), llvm::TargetInstrInfo::getReassociateOperandIndices(), llvm::RISCV::getRVVMCOpcode(), and I.

getRegisterInfo()

const RISCVRegisterInfo & llvm::RISCVInstrInfo::getRegisterInfo ( ) const

inline

Definition at line 87 of file RISCVInstrInfo.h.

getSerializableDirectMachineOperandTargetFlags()

ArrayRef< std::pair< unsigned, const char * > > RISCVInstrInfo::getSerializableDirectMachineOperandTargetFlags ( ) const

override

Definition at line 3616 of file RISCVInstrInfo.cpp.

References llvm::ArrayRef().

getSerializableMachineMemOperandTargetFlags()

ArrayRef< std::pair< MachineMemOperand::Flags, const char * > > RISCVInstrInfo::getSerializableMachineMemOperandTargetFlags ( ) const

override

Definition at line 5111 of file RISCVInstrInfo.cpp.

References llvm::ArrayRef(), llvm::MONontemporalBit0, and llvm::MONontemporalBit1.

getTailDuplicateSize()

unsigned RISCVInstrInfo::getTailDuplicateSize ( CodeGenOptLevel OptLevel ) const

override

Definition at line 5118 of file RISCVInstrInfo.cpp.

References llvm::Aggressive, and STI.

hasReassociableOperands()

bool RISCVInstrInfo::hasReassociableOperands ( const MachineInstr & Inst, const MachineBasicBlock * MBB ) const

override

Definition at line 2460 of file RISCVInstrInfo.cpp.

References llvm::MachineInstr::getOperand(), llvm::MachineInstr::getParent(), llvm::MachineOperand::getReg(), llvm::MachineRegisterInfo::getUniqueVRegDef(), llvm::TargetInstrInfo::hasReassociableOperands(), llvm::MachineOperand::isReg(), llvm::Register::isVirtual(), and MBB.

hasReassociableSibling()

bool RISCVInstrInfo::hasReassociableSibling ( const MachineInstr & Inst, bool & Commuted ) const

override

Definition at line 2494 of file RISCVInstrInfo.cpp.

References llvm::MachineInstr::getMF(), llvm::MachineInstr::getOpcode(), llvm::MachineInstr::getOperand(), llvm::MachineOperand::getReg(), llvm::MachineFunction::getRegInfo(), llvm::MachineRegisterInfo::getVRegDef(), llvm::RISCV::hasEqualFRM(), and llvm::TargetInstrInfo::hasReassociableSibling().

insertBranch()

unsigned RISCVInstrInfo::insertBranch ( MachineBasicBlock & MBB, MachineBasicBlock * TBB, MachineBasicBlock * FBB, ArrayRef< MachineOperand > Cond, const DebugLoc & dl, int * BytesAdded = nullptr ) const

override

Definition at line 1482 of file RISCVInstrInfo.cpp.

References llvm::MachineInstrBuilder::add(), llvm::MachineInstrBuilder::addMBB(), assert(), llvm::BuildMI(), Cond, DL, llvm::get(), llvm::getImm(), getInstSizeInBytes(), MBB, MI, and TBB.

insertIndirectBranch()

void RISCVInstrInfo::insertIndirectBranch ( MachineBasicBlock & MBB, MachineBasicBlock & NewDestBB, MachineBasicBlock & RestoreBB, const DebugLoc & DL, int64_t BrOffset, RegScavenger * RS ) const

override

Definition at line 1520 of file RISCVInstrInfo.cpp.

References llvm::MachineInstrBuilder::addMBB(), llvm::MachineInstrBuilder::addReg(), assert(), llvm::MachineBasicBlock::back(), llvm::BuildMI(), llvm::MachineRegisterInfo::clearVirtRegs(), llvm::MachineRegisterInfo::createVirtualRegister(), llvm::Dead, llvm::Define, DL, llvm::MachineBasicBlock::empty(), llvm::MachineBasicBlock::end(), llvm::get(), llvm::RISCVMachineFunctionInfo::getBranchRelaxationScratchFrameIndex(), llvm::MachineFunction::getInfo(), llvm::MachineFunction::getRegInfo(), llvm::TargetSubtargetInfo::getRegisterInfo(), llvm::MachineFunction::getSubtarget(), II, llvm::isInt(), llvm::Register::isValid(), loadRegFromStackSlot(), MBB, MI, llvm::RISCVII::MO_CALL, Register, llvm::MachineRegisterInfo::replaceRegWith(), llvm::report_fatal_error(), STI, storeRegToStackSlot(), and TRI.

insertOutlinedCall()

MachineBasicBlock::iterator RISCVInstrInfo::insertOutlinedCall ( Module & M, MachineBasicBlock & MBB, MachineBasicBlock::iterator & It, MachineFunction & MF, outliner::Candidate & C ) const

override

Definition at line 3925 of file RISCVInstrInfo.cpp.

References assert(), llvm::BuildMI(), C(), llvm::dwarf_linker::DebugLoc, findRegisterToSaveX5To(), llvm::get(), llvm::MachineFunction::getName(), MachineOutlinerRegSave, MachineOutlinerTailCall, MBB, and llvm::RISCVII::MO_CALL.

isAddImmediate()

std::optional< RegImmPair > RISCVInstrInfo::isAddImmediate ( const MachineInstr & MI, Register Reg ) const

override

Definition at line 3994 of file RISCVInstrInfo.cpp.

References llvm::MachineOperand::getReg(), llvm::MachineOperand::isReg(), and MI.

isAsCheapAsAMove()

bool RISCVInstrInfo::isAsCheapAsAMove ( const MachineInstr & MI ) const

override

Definition at line 2119 of file RISCVInstrInfo.cpp.

References MI.

isAssociativeAndCommutative()

bool RISCVInstrInfo::isAssociativeAndCommutative ( const MachineInstr & Inst, bool Invert ) const

override

Definition at line 2517 of file RISCVInstrInfo.cpp.

References llvm::MachineInstr::FmNsz, llvm::MachineInstr::FmReassoc, llvm::MachineInstr::getFlag(), getInverseOpcode(), llvm::MachineInstr::getOpcode(), isFADD(), isFMUL(), and Opc.

isBranchOffsetInRange()

bool RISCVInstrInfo::isBranchOffsetInRange ( unsigned BranchOpc, int64_t BrOffset ) const

override

Definition at line 1775 of file RISCVInstrInfo.cpp.

References llvm::isInt(), llvm_unreachable, llvm::SignExtend64(), and STI.

isCopyInstrImpl()

std::optional< DestSourcePair > RISCVInstrInfo::isCopyInstrImpl ( const MachineInstr & MI ) const

override

Definition at line 2145 of file RISCVInstrInfo.cpp.

References MI.

isFromLoadImm()

bool RISCVInstrInfo::isFromLoadImm ( const MachineRegisterInfo & MRI, const MachineOperand & Op, int64_t & Imm )

static

Return true if the operand is a load immediate instruction and sets Imm to the immediate value.

Definition at line 1623 of file RISCVInstrInfo.cpp.

References DefMI, llvm::MachineRegisterInfo::getVRegDef(), Imm, and isLoadImm().

Referenced by INITIALIZE_PASS(), and optimizeCondBranch().

isFunctionSafeToOutlineFrom()

bool RISCVInstrInfo::isFunctionSafeToOutlineFrom ( MachineFunction & MF, bool OutlineFromLinkOnceODRs ) const

override

Definition at line 3638 of file RISCVInstrInfo.cpp.

References F, and llvm::MachineFunction::getFunction().

isHighLatencyDef()

bool RISCVInstrInfo::isHighLatencyDef ( int Opc ) const

override

Definition at line 5445 of file RISCVInstrInfo.cpp.

References llvm::RISCV::getRVVMCOpcode(), and Opc.

isLdStSafeToPair()

bool RISCVInstrInfo::isLdStSafeToPair ( const MachineInstr & LdSt, const TargetRegisterInfo * TRI )

static

Definition at line 3420 of file RISCVInstrInfo.cpp.

References assert(), llvm::MachineInstr::getNumExplicitOperands(), llvm::MachineInstr::getOperand(), llvm::MachineOperand::getReg(), llvm::MachineInstr::hasOrderedMemoryRef(), llvm::MachineOperand::isFI(), llvm::MachineOperand::isImm(), llvm::MachineOperand::isReg(), llvm::MachineInstr::modifiesRegister(), and TRI.

isLoadFromStackSlot() [1/2]

Register RISCVInstrInfo::isLoadFromStackSlot ( const MachineInstr & MI, int & FrameIndex ) const

override

Definition at line 105 of file RISCVInstrInfo.cpp.

References llvm::TypeSize::getZero(), isLoadFromStackSlot(), and MI.

Referenced by isLoadFromStackSlot().

isLoadFromStackSlot() [2/2]

Register RISCVInstrInfo::isLoadFromStackSlot ( const MachineInstr & MI, int & FrameIndex, TypeSize & MemBytes ) const

override

Definition at line 142 of file RISCVInstrInfo.cpp.

References llvm::TypeSize::getFixed(), getLMULForRVVWholeLoadStore(), llvm::TypeSize::getScalable(), MI, Register, and llvm::RISCV::RVVBytesPerBlock.

isMBBSafeToOutlineFrom()

bool RISCVInstrInfo::isMBBSafeToOutlineFrom ( MachineBasicBlock & MBB, unsigned & Flags ) const

override

Definition at line 3655 of file RISCVInstrInfo.cpp.

References llvm::TargetInstrInfo::isMBBSafeToOutlineFrom(), and MBB.

isPairableLdStInstOpc()

bool RISCVInstrInfo::isPairableLdStInstOpc ( unsigned Opc )

static

Return true if pairing the given load or store may be paired with another.

Definition at line 3408 of file RISCVInstrInfo.cpp.

References Opc.

isReMaterializableImpl()

bool RISCVInstrInfo::isReMaterializableImpl ( const MachineInstr & MI ) const

override

Definition at line 241 of file RISCVInstrInfo.cpp.

References llvm::RISCV::getRVVMCOpcode(), llvm::TargetInstrInfo::isReMaterializableImpl(), and MI.

isSafeToMove()

bool RISCVInstrInfo::isSafeToMove ( const MachineInstr & From, const MachineBasicBlock::iterator & To )

static

Return true if moving From down to To won't cause any physical register reads or writes to be clobbered and no visible side effects are affected.

From and To must be in the same block.

Definition at line 5529 of file RISCVInstrInfo.cpp.

References llvm::MachineInstr::all_defs(), llvm::MachineInstr::all_uses(), assert(), llvm::MachineBasicBlock::end(), llvm::ilist_node_impl< OptionsT >::getIterator(), llvm::MachineInstr::getParent(), II, llvm::MachineInstr::isSafeToMove(), and llvm::SmallVectorTemplateBase< T, bool >::push_back().

isStoreToStackSlot() [1/2]

Register RISCVInstrInfo::isStoreToStackSlot ( const MachineInstr & MI, int & FrameIndex ) const

override

Definition at line 190 of file RISCVInstrInfo.cpp.

References llvm::TypeSize::getZero(), isStoreToStackSlot(), and MI.

Referenced by isStoreToStackSlot().

isStoreToStackSlot() [2/2]

Register RISCVInstrInfo::isStoreToStackSlot ( const MachineInstr & MI, int & FrameIndex, TypeSize & MemBytes ) const

override

Definition at line 196 of file RISCVInstrInfo.cpp.

References llvm::TypeSize::getFixed(), getLMULForRVVWholeLoadStore(), llvm::TypeSize::getScalable(), MI, Register, and llvm::RISCV::RVVBytesPerBlock.

isVRegCopy()

bool RISCVInstrInfo::isVRegCopy	(	const MachineInstr *	MI,
		unsigned	LMul = 0 ) const

Return true if MI is a COPY to a vector register of a specific LMul, or any kind of vector registers when LMul is zero.

Definition at line 5494 of file RISCVInstrInfo.cpp.

References llvm::RISCVVType::decodeVLMUL(), llvm::RISCVRI::getLMul(), llvm::MachineRegisterInfo::getRegClass(), llvm::MachineRegisterInfo::getTargetRegisterInfo(), llvm::RISCVRegisterInfo::isRVVRegClass(), llvm::Register::isVirtual(), MI, TRI, and llvm::MCRegisterClass::TSFlags.

loadRegFromStackSlot()

void RISCVInstrInfo::loadRegFromStackSlot ( MachineBasicBlock & MBB, MachineBasicBlock::iterator MBBI, Register DstReg, int FrameIndex, const TargetRegisterClass * RC, Register VReg, unsigned SubReg = 0, MachineInstr::MIFlag Flags = MachineInstr::NoFlags ) const

override

Definition at line 760 of file RISCVInstrInfo.cpp.

References llvm::MachineInstrBuilder::addFrameIndex(), llvm::MachineInstrBuilder::addImm(), llvm::MachineInstrBuilder::addMemOperand(), llvm::BuildMI(), llvm::dwarf_linker::DebugLoc, DL, llvm::MachineInstr::FrameDestroy, llvm::get(), llvm::MachinePointerInfo::getFixedStack(), llvm::MachineFunction::getFrameInfo(), llvm::MachineFunction::getMachineMemOperand(), llvm::MachineFrameInfo::getObjectAlign(), llvm::MachineFrameInfo::getObjectSize(), llvm::TypeSize::getScalable(), I, llvm::RISCVRegisterInfo::isRVVRegClass(), llvm_unreachable, MBB, llvm::MachineMemOperand::MOLoad, llvm::RISCV::RVVBitsPerBlock, llvm::TargetStackID::ScalableVector, llvm::MachineInstrBuilder::setMIFlag(), llvm::MachineFrameInfo::setStackID(), and STI.

Referenced by insertIndirectBranch().

movImm()

void RISCVInstrInfo::movImm	(	MachineBasicBlock &	MBB,
		MachineBasicBlock::iterator	MBBI,
		const DebugLoc &	DL,
		Register	DstReg,
		uint64_t	Val,
		MachineInstr::MIFlag	Flag = MachineInstr::NoFlags,
		bool	DstRenamable = false,
		bool	DstIsDead = false ) const

Definition at line 1017 of file RISCVInstrInfo.cpp.

References llvm::MachineInstrBuilder::addImm(), llvm::MachineInstrBuilder::addReg(), assert(), llvm::BuildMI(), llvm::Define, DL, llvm::SmallVectorTemplateCommon< T, typename >::empty(), llvm::RISCVMatInt::generateInstSeq(), llvm::get(), llvm::getDeadRegState(), llvm::getKillRegState(), llvm::getRenamableRegState(), llvm::RISCVMatInt::Imm, llvm::isInt(), llvm::isUInt(), MBB, MBBI, llvm::RISCVMatInt::RegImm, llvm::RISCVMatInt::RegReg, llvm::RISCVMatInt::RegX0, llvm::report_fatal_error(), llvm::MachineInstrBuilder::setMIFlag(), llvm::SignExtend64(), llvm::SmallVectorTemplateCommon< T, typename >::size(), and STI.

Referenced by llvm::RISCVRegisterInfo::lowerSegmentSpillReload(), and mulImm().

mulImm()

void RISCVInstrInfo::mulImm	(	MachineFunction &	MF,
		MachineBasicBlock &	MBB,
		MachineBasicBlock::iterator	II,
		const DebugLoc &	DL,
		Register	DestReg,
		uint32_t	Amt,
		MachineInstr::MIFlag	Flag ) const

Generate code to multiply the value in DestReg by Amt - handles all the common optimizations for this idiom, and supports fallback for subtargets which don't support multiply instructions.

Definition at line 5006 of file RISCVInstrInfo.cpp.

References llvm::MachineInstrBuilder::addImm(), llvm::MachineInstrBuilder::addReg(), assert(), llvm::BuildMI(), llvm::MachineRegisterInfo::createVirtualRegister(), DL, llvm::get(), llvm::MachineFunction::getRegInfo(), llvm::has_single_bit(), II, llvm::isShifted359(), llvm::Kill, llvm_unreachable, llvm::Log2_32(), MBB, movImm(), N, Opc, llvm::MachineInstrBuilder::setMIFlag(), and STI.

optimizeCondBranch()

bool RISCVInstrInfo::optimizeCondBranch ( MachineInstr & MI ) const

override

Definition at line 1642 of file RISCVInstrInfo.cpp.

References llvm::MachineInstrBuilder::add(), llvm::MachineInstrBuilder::addMBB(), llvm::MachineInstrBuilder::addReg(), assert(), llvm::BuildMI(), llvm::MachineRegisterInfo::clearKillFlags(), llvm::RISCVCC::COND_INVALID, evaluateCondBranch(), llvm::get(), llvm::RISCVCC::getBrCond(), getCondFromBranchOpc(), llvm::MachineRegisterInfo::hasOneUse(), I, II, Imm, isFromLoadImm(), llvm::isInt(), isLoadImm(), MBB, MI, Register, and TBB.

optimizeSelect()

MachineInstr * RISCVInstrInfo::optimizeSelect ( MachineInstr & MI, SmallPtrSetImpl< MachineInstr * > & SeenMIs, bool PreferFalse ) const

override

Definition at line 1926 of file RISCVInstrInfo.cpp.

References llvm::MachineInstrBuilder::add(), llvm::MachineInstrBuilder::addImm(), assert(), llvm::BuildMI(), canFoldAsPredicatedOp(), llvm::MachineInstr::clearKillInfo(), llvm::MachineRegisterInfo::constrainRegClass(), DefMI, llvm::SmallPtrSetImpl< PtrType >::erase(), llvm::get(), llvm::RISCVCC::getInverseBranchOpcode(), llvm::MCInstrDesc::getNumOperands(), getPredicatedOpcode(), llvm::MachineOperand::getReg(), llvm::MachineRegisterInfo::getRegClass(), llvm::SmallPtrSetImpl< PtrType >::insert(), MI, and STI.

removeBranch()

unsigned RISCVInstrInfo::removeBranch ( MachineBasicBlock & MBB, int * BytesRemoved = nullptr ) const

override

Definition at line 1448 of file RISCVInstrInfo.cpp.

References getInstSizeInBytes(), I, and MBB.

requiresNTLHint()

bool RISCVInstrInfo::requiresNTLHint

(

const MachineInstr &

MI

)

const

Return true if the instruction requires an NTL hint to be emitted.

Definition at line 5518 of file RISCVInstrInfo.cpp.

References llvm::MachineMemOperand::isNonTemporal(), and MI.

Referenced by getInstSizeInBytes().

reverseBranchCondition()

bool RISCVInstrInfo::reverseBranchCondition ( SmallVectorImpl< MachineOperand > & Cond ) const

override

Definition at line 1595 of file RISCVInstrInfo.cpp.

References assert(), Cond, llvm::getImm(), and llvm::RISCVCC::getInverseBranchOpcode().

Referenced by analyzeLoopForPipelining().

shouldBreakCriticalEdgeToSink()

bool llvm::RISCVInstrInfo::shouldBreakCriticalEdgeToSink ( MachineInstr & MI ) const

inlineoverride

Definition at line 102 of file RISCVInstrInfo.h.

References MI.

shouldClusterMemOps()

bool RISCVInstrInfo::shouldClusterMemOps ( ArrayRef< const MachineOperand * > BaseOps1, int64_t Offset1, bool OffsetIsScalable1, ArrayRef< const MachineOperand * > BaseOps2, int64_t Offset2, bool OffsetIsScalable2, unsigned ClusterSize, unsigned NumBytes ) const

override

Definition at line 3518 of file RISCVInstrInfo.cpp.

References CacheLineSize, llvm::ArrayRef< T >::empty(), llvm::ArrayRef< T >::front(), and memOpsHaveSameBasePtr().

shouldOutlineFromFunctionByDefault()

bool RISCVInstrInfo::shouldOutlineFromFunctionByDefault ( MachineFunction & MF ) const

override

Definition at line 3668 of file RISCVInstrInfo.cpp.

References llvm::MachineFunction::getFunction(), and llvm::Function::hasMinSize().

simplifyInstruction()

bool RISCVInstrInfo::simplifyInstruction ( MachineInstr & MI ) const

override

Definition at line 4584 of file RISCVInstrInfo.cpp.

References llvm::MachineOperand::CreateImm(), llvm::get(), getSHXADDShiftAmount(), getSHXADDUWShiftAmount(), MI, and Opc.

storeRegToStackSlot()

void RISCVInstrInfo::storeRegToStackSlot ( MachineBasicBlock & MBB, MachineBasicBlock::iterator MBBI, Register SrcReg, bool IsKill, int FrameIndex, const TargetRegisterClass * RC, Register VReg, MachineInstr::MIFlag Flags = MachineInstr::NoFlags ) const

override

Definition at line 670 of file RISCVInstrInfo.cpp.

References llvm::MachineInstrBuilder::addFrameIndex(), llvm::MachineInstrBuilder::addImm(), llvm::MachineInstrBuilder::addMemOperand(), llvm::MachineInstrBuilder::addReg(), llvm::BuildMI(), llvm::dwarf_linker::DebugLoc, llvm::get(), llvm::MachinePointerInfo::getFixedStack(), llvm::MachineFunction::getFrameInfo(), llvm::getKillRegState(), llvm::MachineFunction::getMachineMemOperand(), llvm::MachineFrameInfo::getObjectAlign(), llvm::MachineFrameInfo::getObjectSize(), llvm::TypeSize::getScalable(), I, llvm::RISCVRegisterInfo::isRVVRegClass(), llvm_unreachable, MBB, llvm::MachineMemOperand::MOStore, llvm::RISCV::RVVBitsPerBlock, llvm::TargetStackID::ScalableVector, llvm::MachineInstrBuilder::setMIFlag(), llvm::MachineFrameInfo::setStackID(), and STI.

Referenced by insertIndirectBranch().

useMachineCombiner()

bool llvm::RISCVInstrInfo::useMachineCombiner ( ) const

inlineoverride

Definition at line 291 of file RISCVInstrInfo.h.

verifyInstruction()

bool RISCVInstrInfo::verifyInstruction ( const MachineInstr & MI, StringRef & ErrInfo ) const

override

Definition at line 2988 of file RISCVInstrInfo.cpp.

References assert(), CASE_OPERAND_SIMM, CASE_OPERAND_UIMM, CASE_OPERAND_UIMM_LSB_ZEROS, llvm::RISCVCC::COND_INVALID, llvm::RISCVFPRndMode::DYN, llvm::enumerate(), llvm::RISCVII::getFRMOpNum(), llvm::getImm(), llvm::MachineOperand::getImm(), llvm::MachineRegisterInfo::getRegClass(), llvm::RISCVII::getSEWOpNum(), llvm::RISCVII::getVecPolicyOpNum(), llvm::RISCVII::getVLOpNum(), llvm::RISCVII::hasRoundModeOp(), llvm::RISCVII::hasSEWOp(), llvm::RISCVII::hasVecPolicyOp(), llvm::RISCVII::hasVLOp(), Imm, llvm::MachineOperand::isImm(), llvm::isInt(), llvm::MachineOperand::isReg(), llvm::isShiftedInt(), llvm::isShiftedUInt(), llvm::isUInt(), llvm::isValidAtomicOrdering(), llvm::RISCVFPRndMode::isValidRoundingMode(), llvm::RISCVVType::isValidSEW(), llvm::XSMTVTypeMode::isValidSMTVTypeMode(), llvm::RISCVVType::isValidVType(), llvm::RISCVVType::isValidXSfmmVType(), llvm::RISCV::isValidYBNDSWImm(), llvm_unreachable, llvm::RISCVVType::MASK_AGNOSTIC, MI, llvm::RISCVOp::OPERAND_ATOMIC_ORDERING, llvm::RISCVOp::OPERAND_AVL, llvm::RISCVOp::OPERAND_BARE_SIMM32, llvm::RISCVOp::OPERAND_CLUI_IMM, llvm::RISCVOp::OPERAND_COND_CODE, llvm::RISCVOp::OPERAND_FIRST_RISCV_IMM, llvm::RISCVOp::OPERAND_FOUR, llvm::RISCVOp::OPERAND_FRMARG, llvm::RISCVOp::OPERAND_IMM5_ZIBI, llvm::RISCVOp::OPERAND_LAST_RISCV_IMM, llvm::RISCVOp::OPERAND_RLIST, llvm::RISCVOp::OPERAND_RLIST_S0, llvm::RISCVOp::OPERAND_RTZARG, llvm::RISCVOp::OPERAND_RVKRNUM, llvm::RISCVOp::OPERAND_RVKRNUM_0_7, llvm::RISCVOp::OPERAND_RVKRNUM_1_10, llvm::RISCVOp::OPERAND_RVKRNUM_2_14, llvm::RISCVOp::OPERAND_SEW, llvm::RISCVOp::OPERAND_SEW_MASK, llvm::RISCVOp::OPERAND_SFB_RHS, llvm::RISCVOp::OPERAND_SIMM10_LSB0000_NONZERO, llvm::RISCVOp::OPERAND_SIMM12_LO, llvm::RISCVOp::OPERAND_SIMM12_LSB00000, llvm::RISCVOp::OPERAND_SIMM16_NONZERO, llvm::RISCVOp::OPERAND_SIMM20_LI, llvm::RISCVOp::OPERAND_SIMM5_NONZERO, llvm::RISCVOp::OPERAND_SIMM5_PLUS1, llvm::RISCVOp::OPERAND_SIMM6_NONZERO, llvm::RISCVOp::OPERAND_SMTI8, llvm::RISCVOp::OPERAND_SMTVType, llvm::RISCVOp::OPERAND_STACKADJ, llvm::RISCVOp::OPERAND_THREE, llvm::RISCVOp::OPERAND_UIMM10_LSB00_NONZERO, llvm::RISCVOp::OPERAND_UIMM16_NONZERO, llvm::RISCVOp::OPERAND_UIMM20_AUIPC, llvm::RISCVOp::OPERAND_UIMM20_LUI, llvm::RISCVOp::OPERAND_UIMM5_GT3, llvm::RISCVOp::OPERAND_UIMM5_NONZERO, llvm::RISCVOp::OPERAND_UIMM5_PLUS1, llvm::RISCVOp::OPERAND_UIMM6_PLUS1, llvm::RISCVOp::OPERAND_UIMM7_EQ_XLEN, llvm::RISCVOp::OPERAND_UIMM8_GE32, llvm::RISCVOp::OPERAND_UIMM9_YBNDSWI, llvm::RISCVOp::OPERAND_UIMMLOG2XLEN, llvm::RISCVOp::OPERAND_UIMMLOG2XLEN_NONZERO, llvm::RISCVOp::OPERAND_VEC_POLICY, llvm::RISCVOp::OPERAND_VEC_RM, llvm::RISCVOp::OPERAND_VTYPEI10, llvm::RISCVOp::OPERAND_VTYPEI11, llvm::RISCVOp::OPERAND_XSFMM_TWIDEN, llvm::RISCVOp::OPERAND_XSFMM_VTYPE, llvm::RISCVZC::RA, llvm::RISCVZC::RA_S0, llvm::RISCVZC::RA_S0_S11, llvm::RISCVFPRndMode::RTZ, llvm::XSMTVTypeMode::SMT_I8, STI, llvm::RISCVVType::TAIL_AGNOSTIC, and llvm::RISCVII::usesVXRM().

Member Data Documentation

STI

const RISCVSubtarget& llvm::RISCVInstrInfo::STI

protected

Definition at line 369 of file RISCVInstrInfo.h.

Referenced by analyzeCandidate(), areMemAccessesTriviallyDisjoint(), buildClearRegister(), canFoldIntoAddrMode(), copyPhysReg(), copyPhysRegVector(), foldMemoryOperandImpl(), foldMemoryOperandImpl(), getInstSizeInBytes(), getMachineCombinerTraceStrategy(), getNop(), getTailDuplicateSize(), insertIndirectBranch(), isBranchOffsetInRange(), loadRegFromStackSlot(), movImm(), mulImm(), optimizeSelect(), RISCVInstrInfo(), storeRegToStackSlot(), and verifyInstruction().

---

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

• lib/Target/RISCV/RISCVInstrInfo.h
• lib/Target/RISCV/RISCVInstrInfo.cpp