llvm::RISCVInstrInfo Class Reference

#include "Target/RISCV/RISCVInstrInfo.h"

Inheritance diagram for llvm::RISCVInstrInfo:

Public Member Functions
	RISCVInstrInfo (RISCVSubtarget &STI)
MCInst	getNop () const override
const MCInstrDesc &	getBrCond (RISCVCC::CondCode CC) const
Register	isLoadFromStackSlot (const MachineInstr &MI, int &FrameIndex) const override
Register	isLoadFromStackSlot (const MachineInstr &MI, int &FrameIndex, unsigned &MemBytes) const override
Register	isStoreToStackSlot (const MachineInstr &MI, int &FrameIndex) const override
Register	isStoreToStackSlot (const MachineInstr &MI, int &FrameIndex, unsigned &MemBytes) 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, MCRegister DstReg, MCRegister SrcReg, bool KillSrc) const override
void	storeRegToStackSlot (MachineBasicBlock &MBB, MachineBasicBlock::iterator MBBI, Register SrcReg, bool IsKill, int FrameIndex, const TargetRegisterClass *RC, const TargetRegisterInfo *TRI, Register VReg) const override
void	loadRegFromStackSlot (MachineBasicBlock &MBB, MachineBasicBlock::iterator MBBI, Register DstReg, int FrameIndex, const TargetRegisterClass *RC, const TargetRegisterInfo *TRI, Register VReg) const override
MachineInstr *	foldMemoryOperandImpl (MachineFunction &MF, MachineInstr &MI, ArrayRef< unsigned > Ops, MachineBasicBlock::iterator InsertPt, int FrameIndex, 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
bool	analyzeSelect (const MachineInstr &MI, SmallVectorImpl< MachineOperand > &Cond, unsigned &TrueOp, unsigned &FalseOp, bool &Optimizable) 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
std::optional< outliner::OutlinedFunction >	getOutliningCandidateInfo (std::vector< outliner::Candidate > &RepeatedSequenceLocs) const override
virtual outliner::InstrType	getOutliningTypeImpl (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
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
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< unsigned, unsigned > &InstrIdxForVirtReg) 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
ArrayRef< std::pair< MachineMemOperand::Flags, const char * > >	getSerializableMachineMemOperandTargetFlags () const override
unsigned	getUndefInitOpcode (unsigned RegClassID) const override
virtual MachineInstr *	foldMemoryOperandImpl (MachineFunction &MF, MachineInstr &MI, ArrayRef< unsigned > Ops, MachineBasicBlock::iterator InsertPt, int FrameIndex, LiveIntervals *LIS=nullptr, VirtRegMap *VRM=nullptr) const
	Target-dependent implementation for foldMemoryOperand.
virtual MachineInstr *	foldMemoryOperandImpl (MachineFunction &MF, MachineInstr &MI, ArrayRef< unsigned > Ops, MachineBasicBlock::iterator InsertPt, MachineInstr &LoadMI, LiveIntervals *LIS=nullptr) const
	Target-dependent implementation for foldMemoryOperand.

Protected Attributes
const RISCVSubtarget &	STI

Detailed Description

Definition at line 62 of file RISCVInstrInfo.h.

Constructor & Destructor Documentation

RISCVInstrInfo()

RISCVInstrInfo::RISCVInstrInfo ( RISCVSubtarget &  STI )

explicit

Definition at line 69 of file RISCVInstrInfo.cpp.

Member Function Documentation

analyzeBranch()

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

override

Definition at line 901 of file RISCVInstrInfo.cpp.

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

Referenced by optimizeCondBranch().

analyzeSelect()

bool RISCVInstrInfo::analyzeSelect ( const MachineInstr &  MI, SmallVectorImpl< MachineOperand > &  Cond, unsigned &  TrueOp, unsigned &  FalseOp, bool &  Optimizable  ) const

override

Definition at line 1344 of file RISCVInstrInfo.cpp.

References assert(), Cond, MI, and STI.

areMemAccessesTriviallyDisjoint()

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

override

Definition at line 2441 of file RISCVInstrInfo.cpp.

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

buildOutlinedFrame()

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

override

Definition at line 2614 of file RISCVInstrInfo.cpp.

References llvm::MachineBasicBlock::addLiveIn(), llvm::MachineBasicBlock::begin(), llvm::BuildMI(), llvm::RegState::Define, llvm::MachineBasicBlock::end(), llvm::get(), I, llvm::MachineBasicBlock::insert(), and MBB.

canFoldIntoAddrMode()

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

override

Definition at line 2244 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::RISCVSubtarget::is64Bit(), llvm::MachineOperand::isImm(), llvm::MachineOperand::isReg(), llvm::ExtAddrMode::Scale, llvm::ExtAddrMode::ScaledReg, and STI.

commuteInstructionImpl()

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

override

Definition at line 3033 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, CC, llvm::TargetInstrInfo::commuteInstructionImpl(), llvm::FMSUB, llvm::FNMADD, llvm::FNMSUB, llvm::get(), llvm::RISCVCC::getOppositeBranchCondition(), llvm_unreachable, and MI.

convertToThreeAddress()

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

override

Definition at line 3226 of file RISCVInstrInfo.cpp.

References llvm::MachineInstrBuilder::add(), llvm::MachineInstrBuilder::addReg(), assert(), llvm::BuildMI(), CASE_FP_WIDEOP_CHANGE_OPCODE_LMULS_MF4, CASE_FP_WIDEOP_OPCODE_LMULS_MF4, CASE_WIDEOP_CHANGE_OPCODE_LMULS, CASE_WIDEOP_OPCODE_LMULS, llvm::MachineInstrBuilder::copyImplicitOps(), llvm::LiveRange::Segment::end, llvm::get(), llvm::LiveIntervals::getInterval(), llvm::LiveRange::getSegmentContaining(), llvm::RISCVII::getVecPolicyOpNum(), llvm::RISCVII::hasVecPolicyOp(), I, Idx, llvm_unreachable, MBB, MI, llvm::LiveVariables::replaceKillInstruction(), llvm::LiveIntervals::ReplaceMachineInstrInMaps(), and llvm::RegState::Undef.

copyPhysReg()

void RISCVInstrInfo::copyPhysReg ( MachineBasicBlock &  MBB, MachineBasicBlock::iterator  MBBI, const DebugLoc &  DL, MCRegister  DstReg, MCRegister  SrcReg, bool  KillSrc  ) const

override

Definition at line 420 of file RISCVInstrInfo.cpp.

References llvm::MachineInstrBuilder::addImm(), llvm::MachineInstrBuilder::addReg(), assert(), llvm::BuildMI(), contains(), copyPhysRegVector(), DL, llvm::get(), llvm::getKillRegState(), llvm::RISCVSubtarget::getRegisterInfo(), llvm::RISCVSubtarget::getXLen(), llvm_unreachable, MBB, MBBI, 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 298 of file RISCVInstrInfo.cpp.

References _, assert(), llvm::BuildMI(), llvm::RISCVVType::decodeVLMUL(), DL, forwardCopyWillClobberTuple(), llvm::get(), llvm::getKillRegState(), llvm::RISCVRI::getLMul(), llvm::RISCVRI::getNF(), llvm::RISCVSubtarget::getRegisterInfo(), llvm::RISCV::getRVVMCOpcode(), llvm::RISCVII::getSEWOpNum(), llvm::RISCVII::getVLOpNum(), I, llvm::RegState::Implicit, isConvertibleToVMV_V_V(), llvm::RISCVII::LMUL_1, llvm::RISCVII::LMUL_2, llvm::RISCVII::LMUL_4, llvm::RISCVII::LMUL_8, MBB, MBBI, STI, TRI, llvm::TargetRegisterClass::TSFlags, and llvm::RegState::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 2672 of file RISCVInstrInfo.cpp.

References assert(), llvm::TargetInstrInfo::createMIROperandComment(), llvm::raw_ostream::flush(), llvm::RISCVII::getSEWOpNum(), llvm::RISCVII::getVecPolicyOpNum(), llvm::RISCVII::hasSEWOp(), llvm::RISCVII::hasVecPolicyOp(), llvm::RISCVVType::isValidSEW(), llvm::RISCVII::MASK_AGNOSTIC, MI, OS, llvm::RISCVVType::printVType(), llvm::RISCVII::TAIL_AGNOSTIC, and TRI.

decomposeMachineOperandsTargetFlags()

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

override

Definition at line 2474 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 2294 of file RISCVInstrInfo.cpp.

References llvm::MachineInstrBuilder::addImm(), llvm::MachineInstrBuilder::addReg(), assert(), llvm::ExtAddrMode::BaseReg, llvm::BuildMI(), llvm::RegState::Define, llvm::ExtAddrMode::Displacement, DL, llvm::get(), llvm::MachineInstr::getDebugLoc(), 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().

finalizeInsInstrs()

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

override

Definition at line 1566 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::RISCV::getNamedOperandIdx(), llvm::MachineInstr::getOpcode(), llvm::MachineInstr::getOperand(), llvm::RegState::Implicit, and MI.

findCommutedOpIndices()

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

override

Definition at line 2813 of file RISCVInstrInfo.cpp.

References assert(), CASE_RVV_OPCODE, 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::hasVecPolicyOp(), and MI.

foldMemoryOperandImpl() [1/3]

virtual MachineInstr * llvm::TargetInstrInfo::foldMemoryOperandImpl ( MachineFunction &  MF, MachineInstr &  MI, ArrayRef< unsigned >  Ops, MachineBasicBlock::iterator  InsertPt, int  FrameIndex, LiveIntervals *  LIS = nullptr, VirtRegMap *  VRM = nullptr  ) const

inline

Target-dependent implementation for foldMemoryOperand.

Target-independent code in foldMemoryOperand will take care of adding a MachineMemOperand to the newly created instruction. The instruction and any auxiliary instructions necessary will be inserted at InsertPt.

Definition at line 1315 of file TargetInstrInfo.h.

foldMemoryOperandImpl() [2/3]

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

override

Definition at line 703 of file RISCVInstrInfo.cpp.

References llvm::MachineInstrBuilder::addFrameIndex(), llvm::MachineInstrBuilder::addImm(), llvm::MachineInstrBuilder::addMemOperand(), llvm::BuildMI(), llvm::get(), llvm::MachineFunction::getDataLayout(), llvm::MachinePointerInfo::getFixedStack(), llvm::MachineFunction::getFrameInfo(), llvm::MachineFunction::getMachineMemOperand(), llvm::MachineFrameInfo::getObjectAlign(), llvm::MachineFrameInfo::getObjectSize(), llvm::DataLayout::isBigEndian(), llvm::RISCV::isSEXT_W(), llvm::RISCV::isZEXT_B(), llvm::RISCV::isZEXT_W(), MI, llvm::MachineMemOperand::MOLoad, and llvm::ArrayRef< T >::size().

foldMemoryOperandImpl() [3/3]

virtual MachineInstr * llvm::TargetInstrInfo::foldMemoryOperandImpl ( MachineFunction &  MF, MachineInstr &  MI, ArrayRef< unsigned >  Ops, MachineBasicBlock::iterator  InsertPt, MachineInstr &  LoadMI, LiveIntervals *  LIS = nullptr  ) const

inline

Target-dependent implementation for foldMemoryOperand.

Target-independent code in foldMemoryOperand will take care of adding a MachineMemOperand to the newly created instruction. The instruction and any auxiliary instructions necessary will be inserted at InsertPt.

Definition at line 1328 of file TargetInstrInfo.h.

genAlternativeCodeSequence()

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

override

Definition at line 2028 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(), MRI, llvm::SHXADD_ADD_SLLI_OP1, and llvm::SHXADD_ADD_SLLI_OP2.

getBranchDestBlock()

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

override

Definition at line 1231 of file RISCVInstrInfo.cpp.

References assert(), and MI.

Referenced by analyzeBranch().

getBrCond()

const MCInstrDesc & RISCVInstrInfo::getBrCond

(

RISCVCC::CondCode

CC

)

const

Definition at line 878 of file RISCVInstrInfo.cpp.

References CC, llvm::get(), and llvm::RISCVCC::getBrCond().

Referenced by insertBranch(), and optimizeCondBranch().

getCombinerObjective()

CombinerObjective RISCVInstrInfo::getCombinerObjective ( unsigned  Pattern ) const

override

Definition at line 1863 of file RISCVInstrInfo.cpp.

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

getInstSizeInBytes()

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

override

Definition at line 1433 of file RISCVInstrInfo.cpp.

References llvm::get(), llvm::StackMapOpers::getNumPatchBytes(), llvm::PatchPointOpers::getNumPatchBytes(), llvm::StatepointOpers::getNumPatchBytes(), llvm::MachineFunction::getSubtarget(), llvm::MachineFunction::getTarget(), llvm::MachineMemOperand::isNonTemporal(), MI, STI, and TM.

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

getInverseOpcode()

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

override

Definition at line 1701 of file RISCVInstrInfo.cpp.

Referenced by isAssociativeAndCommutative().

getMachineCombinerPatterns()

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

override

Definition at line 1875 of file RISCVInstrInfo.cpp.

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

getMachineCombinerTraceStrategy()

MachineTraceStrategy RISCVInstrInfo::getMachineCombinerTraceStrategy ( ) const

override

Definition at line 1552 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 2312 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 2417 of file RISCVInstrInfo.cpp.

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

Referenced by areMemAccessesTriviallyDisjoint(), and getMemOperandsWithOffsetWidth().

getNop()

MCInst RISCVInstrInfo::getNop ( ) const

override

Definition at line 73 of file RISCVInstrInfo.cpp.

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

getOutliningCandidateInfo()

std::optional< outliner::OutlinedFunction > RISCVInstrInfo::getOutliningCandidateInfo ( std::vector< outliner::Candidate > &  RepeatedSequenceLocs ) const

override

Definition at line 2534 of file RISCVInstrInfo.cpp.

References llvm::CallingConv::C, llvm::erase_if(), getInstSizeInBytes(), MachineOutlinerDefault, MI, and TRI.

getOutliningTypeImpl()

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

overridevirtual

Definition at line 2573 of file RISCVInstrInfo.cpp.

References F, llvm::MachineBasicBlock::getParent(), llvm::TargetSubtargetInfo::getRegisterInfo(), llvm::MachineFunction::getSubtarget(), llvm::outliner::Illegal, llvm::outliner::Invisible, llvm::outliner::Legal, MBB, MBBI, MI, llvm::RISCVII::MO_PCREL_LO, and TRI.

getSerializableDirectMachineOperandTargetFlags()

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

override

Definition at line 2480 of file RISCVInstrInfo.cpp.

getSerializableMachineMemOperandTargetFlags()

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

override

Definition at line 3444 of file RISCVInstrInfo.cpp.

References llvm::MONontemporalBit0, and llvm::MONontemporalBit1.

getUndefInitOpcode()

unsigned llvm::RISCVInstrInfo::getUndefInitOpcode ( unsigned  RegClassID ) const

inlineoverride

Definition at line 280 of file RISCVInstrInfo.h.

References llvm_unreachable.

hasReassociableSibling()

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

override

Definition at line 1629 of file RISCVInstrInfo.cpp.

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

insertBranch()

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

override

Definition at line 1007 of file RISCVInstrInfo.cpp.

References llvm::MachineInstrBuilder::add(), llvm::MachineInstrBuilder::addMBB(), assert(), llvm::BuildMI(), CC, Cond, DL, llvm::get(), getBrCond(), 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 1044 of file RISCVInstrInfo.cpp.

References llvm::MachineInstrBuilder::addMBB(), llvm::MachineInstrBuilder::addReg(), assert(), llvm::MachineBasicBlock::back(), llvm::BuildMI(), llvm::RegState::Dead, llvm::RegState::Define, DL, llvm::MachineBasicBlock::empty(), llvm::MachineBasicBlock::end(), llvm::RegScavenger::enterBasicBlockEnd(), llvm::get(), llvm::RISCVMachineFunctionInfo::getBranchRelaxationScratchFrameIndex(), llvm::MachineFunction::getInfo(), llvm::MachineBasicBlock::getParent(), llvm::MachineFunction::getRegInfo(), llvm::TargetSubtargetInfo::getRegisterInfo(), llvm::MachineFunction::getSubtarget(), loadRegFromStackSlot(), MBB, MI, llvm::RISCVII::MO_CALL, MRI, llvm::MachineBasicBlock::pred_size(), llvm::report_fatal_error(), llvm::RegScavenger::scavengeRegisterBackwards(), llvm::RegScavenger::setRegUsed(), 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 2642 of file RISCVInstrInfo.cpp.

References llvm::BuildMI(), llvm::get(), llvm::MachineFunction::getName(), llvm::MachineBasicBlock::insert(), MBB, and llvm::RISCVII::MO_CALL.

isAddImmediate()

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

override

Definition at line 2654 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 1498 of file RISCVInstrInfo.cpp.

References MI.

isAssociativeAndCommutative()

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

override

Definition at line 1648 of file RISCVInstrInfo.cpp.

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

isBranchOffsetInRange()

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

override

Definition at line 1238 of file RISCVInstrInfo.cpp.

References llvm::RISCVSubtarget::getXLen(), llvm::isIntN(), llvm_unreachable, llvm::SignExtend64(), and STI.

isCopyInstrImpl()

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

override

Definition at line 1524 of file RISCVInstrInfo.cpp.

References MI.

isFunctionSafeToOutlineFrom()

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

override

Definition at line 2500 of file RISCVInstrInfo.cpp.

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

isLoadFromStackSlot() [1/2]

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

override

Definition at line 82 of file RISCVInstrInfo.cpp.

References isLoadFromStackSlot(), and MI.

Referenced by isLoadFromStackSlot().

isLoadFromStackSlot() [2/2]

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

override

Definition at line 88 of file RISCVInstrInfo.cpp.

References MI.

isMBBSafeToOutlineFrom()

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

override

Definition at line 2517 of file RISCVInstrInfo.cpp.

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

isStoreToStackSlot() [1/2]

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

override

Definition at line 123 of file RISCVInstrInfo.cpp.

References isStoreToStackSlot(), and MI.

Referenced by isStoreToStackSlot().

isStoreToStackSlot() [2/2]

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

override

Definition at line 129 of file RISCVInstrInfo.cpp.

References MI.

loadRegFromStackSlot()

void RISCVInstrInfo::loadRegFromStackSlot ( MachineBasicBlock &  MBB, MachineBasicBlock::iterator  MBBI, Register  DstReg, int  FrameIndex, const TargetRegisterClass *  RC, const TargetRegisterInfo *  TRI, Register  VReg  ) const

override

Definition at line 622 of file RISCVInstrInfo.cpp.

References llvm::MachineInstrBuilder::addFrameIndex(), llvm::MachineInstrBuilder::addImm(), llvm::MachineInstrBuilder::addMemOperand(), llvm::LocationSize::beforeOrAfterPointer(), llvm::BuildMI(), llvm::get(), llvm::MachinePointerInfo::getFixedStack(), llvm::MachineFunction::getFrameInfo(), llvm::MachineFunction::getMachineMemOperand(), llvm::MachineFrameInfo::getObjectAlign(), llvm::MachineFrameInfo::getObjectSize(), llvm::MachineBasicBlock::getParent(), I, llvm_unreachable, MBB, llvm::MachineMemOperand::MOLoad, llvm::TargetStackID::ScalableVector, llvm::MachineFrameInfo::setStackID(), and TRI.

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 760 of file RISCVInstrInfo.cpp.

References llvm::MachineInstrBuilder::addImm(), llvm::MachineInstrBuilder::addReg(), assert(), llvm::BuildMI(), llvm::RegState::Define, DL, llvm::SmallVectorBase< Size_T >::empty(), llvm::RISCVMatInt::generateInstSeq(), llvm::get(), llvm::getDeadRegState(), llvm::getKillRegState(), llvm::getRenamableRegState(), llvm::RISCVMatInt::Imm, llvm::RISCVSubtarget::is64Bit(), MBB, MBBI, llvm::RISCVMatInt::RegImm, llvm::RISCVMatInt::RegReg, llvm::RISCVMatInt::RegX0, llvm::report_fatal_error(), llvm::MachineInstrBuilder::setMIFlag(), llvm::SmallVectorBase< Size_T >::size(), and STI.

Referenced by llvm::RISCVRegisterInfo::lowerVRELOAD(), llvm::RISCVRegisterInfo::lowerVSPILL(), 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 3338 of file RISCVInstrInfo.cpp.

References llvm::MachineInstrBuilder::addImm(), llvm::MachineInstrBuilder::addReg(), assert(), llvm::BuildMI(), DL, llvm::get(), llvm::MachineFunction::getRegInfo(), llvm::isPowerOf2_64(), llvm::RegState::Kill, llvm_unreachable, llvm::Log2_32(), llvm::Log2_64(), MBB, movImm(), MRI, N, llvm::MachineInstrBuilder::setMIFlag(), and STI.

optimizeCondBranch()

bool RISCVInstrInfo::optimizeCondBranch ( MachineInstr &  MI ) const

override

Definition at line 1117 of file RISCVInstrInfo.cpp.

References llvm::MachineInstrBuilder::add(), llvm::MachineInstrBuilder::addMBB(), analyzeBranch(), assert(), llvm::BuildMI(), CC, Cond, llvm::RISCVCC::COND_EQ, llvm::RISCVCC::COND_GE, llvm::RISCVCC::COND_INVALID, llvm::RISCVCC::COND_LT, llvm::RISCVCC::COND_NE, llvm::MachineOperand::CreateReg(), getBrCond(), llvm::MachineBasicBlock::getParent(), llvm::MachineFunction::getRegInfo(), I, INT64_MAX, LHS, MBB, MI, MRI, llvm::MachineBasicBlock::rend(), reverseBranchCondition(), RHS, and TBB.

optimizeSelect()

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

override

Definition at line 1368 of file RISCVInstrInfo.cpp.

References llvm::MachineInstrBuilder::add(), llvm::MachineInstrBuilder::addImm(), assert(), llvm::BuildMI(), canFoldAsPredicatedOp(), CC, llvm::MachineInstr::clearKillInfo(), DefMI, llvm::SmallPtrSetImpl< PtrType >::erase(), llvm::MachineInstr::eraseFromParent(), llvm::get(), llvm::MachineInstr::getDesc(), llvm::MCInstrDesc::getNumOperands(), llvm::MachineInstr::getOpcode(), llvm::MachineInstr::getOperand(), llvm::RISCVCC::getOppositeBranchCondition(), llvm::MachineInstr::getParent(), getPredicatedOpcode(), llvm::MachineOperand::getReg(), llvm::SmallPtrSetImpl< PtrType >::insert(), MI, MRI, and STI.

removeBranch()

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

override

Definition at line 973 of file RISCVInstrInfo.cpp.

References llvm::MachineBasicBlock::begin(), llvm::MachineBasicBlock::end(), getInstSizeInBytes(), llvm::MachineBasicBlock::getLastNonDebugInstr(), I, and MBB.

reverseBranchCondition()

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

override

Definition at line 1109 of file RISCVInstrInfo.cpp.

References assert(), CC, Cond, and getOppositeBranchCondition().

Referenced by optimizeCondBranch().

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 2383 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 2528 of file RISCVInstrInfo.cpp.

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

storeRegToStackSlot()

void RISCVInstrInfo::storeRegToStackSlot ( MachineBasicBlock &  MBB, MachineBasicBlock::iterator  MBBI, Register  SrcReg, bool  IsKill, int  FrameIndex, const TargetRegisterClass *  RC, const TargetRegisterInfo *  TRI, Register  VReg  ) const

override

Definition at line 539 of file RISCVInstrInfo.cpp.

References llvm::MachineInstrBuilder::addFrameIndex(), llvm::MachineInstrBuilder::addImm(), llvm::MachineInstrBuilder::addMemOperand(), llvm::MachineInstrBuilder::addReg(), llvm::LocationSize::beforeOrAfterPointer(), llvm::BuildMI(), llvm::get(), llvm::MachinePointerInfo::getFixedStack(), llvm::MachineFunction::getFrameInfo(), llvm::getKillRegState(), llvm::MachineFunction::getMachineMemOperand(), llvm::MachineFrameInfo::getObjectAlign(), llvm::MachineFrameInfo::getObjectSize(), llvm::MachineBasicBlock::getParent(), I, llvm_unreachable, MBB, llvm::MachineMemOperand::MOStore, llvm::TargetStackID::ScalableVector, llvm::MachineFrameInfo::setStackID(), and TRI.

Referenced by insertIndirectBranch().

useMachineCombiner()

bool llvm::RISCVInstrInfo::useMachineCombiner ( ) const

inlineoverride

Definition at line 249 of file RISCVInstrInfo.h.

verifyInstruction()

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

override

Definition at line 2060 of file RISCVInstrInfo.cpp.

References CASE_OPERAND_UIMM, llvm::enumerate(), llvm::MachineOperand::getImm(), llvm::RISCVII::getSEWOpNum(), llvm::RISCVII::getVecPolicyOpNum(), llvm::RISCVII::getVLOpNum(), llvm::RISCVII::hasSEWOp(), llvm::RISCVII::hasVecPolicyOp(), llvm::RISCVII::hasVLOp(), llvm::RISCVSubtarget::is64Bit(), llvm::MachineOperand::isImm(), llvm::RISCVVType::isValidSEW(), llvm_unreachable, llvm::RISCVII::MASK_AGNOSTIC, MI, MRI, llvm::RISCVOp::OPERAND_CLUI_IMM, llvm::RISCVOp::OPERAND_FIRST_RISCV_IMM, llvm::RISCVOp::OPERAND_LAST_RISCV_IMM, 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_SIMM10_LSB0000_NONZERO, llvm::RISCVOp::OPERAND_SIMM12, llvm::RISCVOp::OPERAND_SIMM12_LSB00000, llvm::RISCVOp::OPERAND_SIMM5, llvm::RISCVOp::OPERAND_SIMM5_PLUS1, llvm::RISCVOp::OPERAND_SIMM6, llvm::RISCVOp::OPERAND_SIMM6_NONZERO, llvm::RISCVOp::OPERAND_SPIMM, llvm::RISCVOp::OPERAND_UIMM10_LSB00_NONZERO, llvm::RISCVOp::OPERAND_UIMM2_LSB0, llvm::RISCVOp::OPERAND_UIMM7_LSB00, llvm::RISCVOp::OPERAND_UIMM8_GE32, llvm::RISCVOp::OPERAND_UIMM8_LSB00, llvm::RISCVOp::OPERAND_UIMM8_LSB000, llvm::RISCVOp::OPERAND_UIMM9_LSB000, llvm::RISCVOp::OPERAND_UIMMLOG2XLEN, llvm::RISCVOp::OPERAND_UIMMLOG2XLEN_NONZERO, llvm::RISCVOp::OPERAND_VTYPEI10, llvm::RISCVOp::OPERAND_VTYPEI11, llvm::RISCVOp::OPERAND_ZERO, STI, and llvm::RISCVII::TAIL_AGNOSTIC.

Member Data Documentation

STI

const RISCVSubtarget& llvm::RISCVInstrInfo::STI

protected

Definition at line 296 of file RISCVInstrInfo.h.

Referenced by analyzeSelect(), areMemAccessesTriviallyDisjoint(), canFoldIntoAddrMode(), copyPhysReg(), copyPhysRegVector(), getInstSizeInBytes(), getMachineCombinerTraceStrategy(), getNop(), isBranchOffsetInRange(), movImm(), mulImm(), optimizeSelect(), and verifyInstruction().

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

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