LLVM 23.0.0git
Public Member Functions | Static Public Member Functions | Protected Attributes | List of all members
llvm::RISCVInstrInfo Class Reference

#include "Target/RISCV/RISCVInstrInfo.h"

Inheritance diagram for llvm::RISCVInstrInfo:
[legend]

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 1367 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 3718 of file RISCVInstrInfo.cpp.

References assert(), llvm::CallingConv::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 5372 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 3555 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 3947 of file RISCVInstrInfo.cpp.

References llvm::BuildMI(), 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 3886 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 3311 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 4388 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 4861 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::TargetRegisterClass::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 3981 of file RISCVInstrInfo.cpp.

References assert(), llvm::TargetInstrInfo::createMIROperandComment(), 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, OpIdx, 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 3589 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 3367 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 1112 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 2198 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 4144 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 912 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 958 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 2942 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 1754 of file RISCVInstrInfo.cpp.

References assert(), and MI.

Referenced by analyzeBranch().

◆ getCombinerObjective()

CombinerObjective RISCVInstrInfo::getCombinerObjective ( unsigned Pattern) const
override

Definition at line 2777 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 1073 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 1977 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 2559 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 2789 of file RISCVInstrInfo.cpp.

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

◆ getMachineCombinerTraceStrategy()

MachineTraceStrategy RISCVInstrInfo::getMachineCombinerTraceStrategy ( ) const
override

Definition at line 2184 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 3420 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 3531 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 3760 of file RISCVInstrInfo.cpp.

References analyzeCandidate(), llvm::outliner::Candidate::back(), llvm::CallingConv::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 3850 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 2469 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 3595 of file RISCVInstrInfo.cpp.

References llvm::ArrayRef().

◆ getSerializableMachineMemOperandTargetFlags()

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

Definition at line 5080 of file RISCVInstrInfo.cpp.

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

◆ getTailDuplicateSize()

unsigned RISCVInstrInfo::getTailDuplicateSize ( CodeGenOptLevel OptLevel) const
override

Definition at line 5087 of file RISCVInstrInfo.cpp.

References llvm::Aggressive, and STI.

◆ hasReassociableOperands()

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

Definition at line 2446 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 2480 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 1473 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 1511 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 3902 of file RISCVInstrInfo.cpp.

References assert(), llvm::BuildMI(), llvm::CallingConv::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 3963 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 2105 of file RISCVInstrInfo.cpp.

References MI.

◆ isAssociativeAndCommutative()

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

Definition at line 2503 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 1761 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 2131 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 1614 of file RISCVInstrInfo.cpp.

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

Referenced by INITIALIZE_PASS(), and optimizeCondBranch().

◆ isFunctionSafeToOutlineFrom()

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

Definition at line 3615 of file RISCVInstrInfo.cpp.

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

◆ isHighLatencyDef()

bool RISCVInstrInfo::isHighLatencyDef ( int Opc) const
override

Definition at line 5414 of file RISCVInstrInfo.cpp.

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

◆ isLdStSafeToPair()

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

Definition at line 3399 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 3632 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 3387 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 5498 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 5463 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::TargetRegisterClass::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 751 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 1008 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 4975 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 1628 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, 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 1912 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 1439 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 5487 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 1586 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 3497 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 3645 of file RISCVInstrInfo.cpp.

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

◆ simplifyInstruction()

bool RISCVInstrInfo::simplifyInstruction ( MachineInstr & MI) const
override

Definition at line 4553 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 661 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 2974 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(), llvm::MachineOperand::isImm(), llvm::isInt(), llvm::MachineOperand::isReg(), llvm::isShiftedInt(), llvm::isShiftedUInt(), llvm::isUInt(), llvm::isValidAtomicOrdering(), llvm::RISCVFPRndMode::isValidRoundingMode(), llvm::RISCVVType::isValidSEW(), 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_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, OpIdx, llvm::RISCVZC::RA, llvm::RISCVZC::RA_S0, llvm::RISCVZC::RA_S0_S11, llvm::RISCVFPRndMode::RTZ, 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:
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