LLVM  14.0.0git
Public Member Functions | List of all members
llvm::Thumb2InstrInfo Class Reference

#include "Target/ARM/Thumb2InstrInfo.h"

Inheritance diagram for llvm::Thumb2InstrInfo:
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Collaboration diagram for llvm::Thumb2InstrInfo:
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Public Member Functions

 Thumb2InstrInfo (const ARMSubtarget &STI)
 
MCInst getNop () const override
 Return the noop instruction to use for a noop. More...
 
unsigned getUnindexedOpcode (unsigned Opc) const override
 
void ReplaceTailWithBranchTo (MachineBasicBlock::iterator Tail, MachineBasicBlock *NewDest) const override
 
bool isLegalToSplitMBBAt (MachineBasicBlock &MBB, MachineBasicBlock::iterator MBBI) const override
 
void copyPhysReg (MachineBasicBlock &MBB, MachineBasicBlock::iterator I, const DebugLoc &DL, MCRegister DestReg, 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) const override
 
void loadRegFromStackSlot (MachineBasicBlock &MBB, MachineBasicBlock::iterator MBBI, Register DestReg, int FrameIndex, const TargetRegisterClass *RC, const TargetRegisterInfo *TRI) const override
 
const ThumbRegisterInfo & getRegisterInfo () const override
 getRegisterInfo - TargetInstrInfo is a superset of MRegister info. More...
 
MachineInstr * optimizeSelect (MachineInstr &MI, SmallPtrSetImpl< MachineInstr * > &SeenMIs, bool) const override
 
MachineInstr * commuteInstructionImpl (MachineInstr &MI, bool NewMI, unsigned OpIdx1, unsigned OpIdx2) const override
 
- Public Member Functions inherited from llvm::ARMBaseInstrInfo
bool hasNOP () const
 
MachineInstr * convertToThreeAddress (MachineFunction::iterator &MFI, MachineInstr &MI, LiveVariables *LV) const override
 
const ARMSubtarget & getSubtarget () const
 
ScheduleHazardRecognizer * CreateTargetHazardRecognizer (const TargetSubtargetInfo *STI, const ScheduleDAG *DAG) const override
 
ScheduleHazardRecognizer * CreateTargetMIHazardRecognizer (const InstrItineraryData *II, const ScheduleDAGMI *DAG) const override
 
ScheduleHazardRecognizer * CreateTargetPostRAHazardRecognizer (const InstrItineraryData *II, const ScheduleDAG *DAG) const override
 
bool analyzeBranch (MachineBasicBlock &MBB, MachineBasicBlock *&TBB, MachineBasicBlock *&FBB, SmallVectorImpl< MachineOperand > &Cond, bool AllowModify=false) const override
 
unsigned removeBranch (MachineBasicBlock &MBB, int *BytesRemoved=nullptr) const override
 
unsigned insertBranch (MachineBasicBlock &MBB, MachineBasicBlock *TBB, MachineBasicBlock *FBB, ArrayRef< MachineOperand > Cond, const DebugLoc &DL, int *BytesAdded=nullptr) const override
 
bool reverseBranchCondition (SmallVectorImpl< MachineOperand > &Cond) const override
 
bool isPredicated (const MachineInstr &MI) const override
 
std::string createMIROperandComment (const MachineInstr &MI, const MachineOperand &Op, unsigned OpIdx, const TargetRegisterInfo *TRI) const override
 
ARMCC::CondCodes getPredicate (const MachineInstr &MI) const
 
bool PredicateInstruction (MachineInstr &MI, ArrayRef< MachineOperand > Pred) const override
 
bool SubsumesPredicate (ArrayRef< MachineOperand > Pred1, ArrayRef< MachineOperand > Pred2) const override
 
bool ClobbersPredicate (MachineInstr &MI, std::vector< MachineOperand > &Pred, bool SkipDead) const override
 
bool isPredicable (const MachineInstr &MI) const override
 isPredicable - Return true if the specified instruction can be predicated. More...
 
unsigned getInstSizeInBytes (const MachineInstr &MI) const override
 GetInstSize - Returns the size of the specified MachineInstr. More...
 
unsigned isLoadFromStackSlot (const MachineInstr &MI, int &FrameIndex) const override
 
unsigned isStoreToStackSlot (const MachineInstr &MI, int &FrameIndex) const override
 
unsigned isLoadFromStackSlotPostFE (const MachineInstr &MI, int &FrameIndex) const override
 
unsigned isStoreToStackSlotPostFE (const MachineInstr &MI, int &FrameIndex) const override
 
void copyToCPSR (MachineBasicBlock &MBB, MachineBasicBlock::iterator I, unsigned SrcReg, bool KillSrc, const ARMSubtarget &Subtarget) const
 
void copyFromCPSR (MachineBasicBlock &MBB, MachineBasicBlock::iterator I, unsigned DestReg, bool KillSrc, const ARMSubtarget &Subtarget) const
 
void copyPhysReg (MachineBasicBlock &MBB, MachineBasicBlock::iterator I, const DebugLoc &DL, MCRegister DestReg, 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) const override
 
void loadRegFromStackSlot (MachineBasicBlock &MBB, MachineBasicBlock::iterator MBBI, Register DestReg, int FrameIndex, const TargetRegisterClass *RC, const TargetRegisterInfo *TRI) const override
 
bool expandPostRAPseudo (MachineInstr &MI) const override
 
bool shouldSink (const MachineInstr &MI) const override
 
void reMaterialize (MachineBasicBlock &MBB, MachineBasicBlock::iterator MI, Register DestReg, unsigned SubIdx, const MachineInstr &Orig, const TargetRegisterInfo &TRI) const override
 
MachineInstr & duplicate (MachineBasicBlock &MBB, MachineBasicBlock::iterator InsertBefore, const MachineInstr &Orig) const override
 
const MachineInstrBuilder & AddDReg (MachineInstrBuilder &MIB, unsigned Reg, unsigned SubIdx, unsigned State, const TargetRegisterInfo *TRI) const
 
bool produceSameValue (const MachineInstr &MI0, const MachineInstr &MI1, const MachineRegisterInfo *MRI) const override
 
bool areLoadsFromSameBasePtr (SDNode *Load1, SDNode *Load2, int64_t &Offset1, int64_t &Offset2) const override
 areLoadsFromSameBasePtr - This is used by the pre-regalloc scheduler to determine if two loads are loading from the same base address. More...
 
bool shouldScheduleLoadsNear (SDNode *Load1, SDNode *Load2, int64_t Offset1, int64_t Offset2, unsigned NumLoads) const override
 shouldScheduleLoadsNear - This is a used by the pre-regalloc scheduler to determine (in conjunction with areLoadsFromSameBasePtr) if two loads should be scheduled togther. More...
 
bool isSchedulingBoundary (const MachineInstr &MI, const MachineBasicBlock *MBB, const MachineFunction &MF) const override
 
bool isProfitableToIfCvt (MachineBasicBlock &MBB, unsigned NumCycles, unsigned ExtraPredCycles, BranchProbability Probability) const override
 
bool isProfitableToIfCvt (MachineBasicBlock &TMBB, unsigned NumT, unsigned ExtraT, MachineBasicBlock &FMBB, unsigned NumF, unsigned ExtraF, BranchProbability Probability) const override
 
bool isProfitableToDupForIfCvt (MachineBasicBlock &MBB, unsigned NumCycles, BranchProbability Probability) const override
 
unsigned extraSizeToPredicateInstructions (const MachineFunction &MF, unsigned NumInsts) const override
 
unsigned predictBranchSizeForIfCvt (MachineInstr &MI) const override
 
bool isProfitableToUnpredicate (MachineBasicBlock &TMBB, MachineBasicBlock &FMBB) const override
 
bool analyzeCompare (const MachineInstr &MI, Register &SrcReg, Register &SrcReg2, int64_t &CmpMask, int64_t &CmpValue) const override
 analyzeCompare - For a comparison instruction, return the source registers in SrcReg and SrcReg2 if having two register operands, and the value it compares against in CmpValue. More...
 
bool optimizeCompareInstr (MachineInstr &CmpInstr, Register SrcReg, Register SrcReg2, int64_t CmpMask, int64_t CmpValue, const MachineRegisterInfo *MRI) const override
 optimizeCompareInstr - Convert the instruction to set the zero flag so that we can remove a "comparison with zero"; Remove a redundant CMP instruction if the flags can be updated in the same way by an earlier instruction such as SUB. More...
 
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 FoldImmediate (MachineInstr &UseMI, MachineInstr &DefMI, Register Reg, MachineRegisterInfo *MRI) const override
 FoldImmediate - 'Reg' is known to be defined by a move immediate instruction, try to fold the immediate into the use instruction. More...
 
unsigned getNumMicroOps (const InstrItineraryData *ItinData, const MachineInstr &MI) const override
 
int getOperandLatency (const InstrItineraryData *ItinData, const MachineInstr &DefMI, unsigned DefIdx, const MachineInstr &UseMI, unsigned UseIdx) const override
 
int getOperandLatency (const InstrItineraryData *ItinData, SDNode *DefNode, unsigned DefIdx, SDNode *UseNode, unsigned UseIdx) const override
 
std::pair< uint16_t, uint16_t > getExecutionDomain (const MachineInstr &MI) const override
 VFP/NEON execution domains. More...
 
void setExecutionDomain (MachineInstr &MI, unsigned Domain) const override
 
unsigned getPartialRegUpdateClearance (const MachineInstr &, unsigned, const TargetRegisterInfo *) const override
 
void breakPartialRegDependency (MachineInstr &, unsigned, const TargetRegisterInfo *TRI) const override
 
unsigned getNumLDMAddresses (const MachineInstr &MI) const
 Get the number of addresses by LDM or VLDM or zero for unknown. More...
 
std::pair< unsigned, unsigned > decomposeMachineOperandsTargetFlags (unsigned TF) const override
 
ArrayRef< std::pair< unsigned, const char * > > getSerializableDirectMachineOperandTargetFlags () const override
 
ArrayRef< std::pair< unsigned, const char * > > getSerializableBitmaskMachineOperandTargetFlags () const override
 
bool isFunctionSafeToOutlineFrom (MachineFunction &MF, bool OutlineFromLinkOnceODRs) const override
 ARM supports the MachineOutliner. More...
 
outliner::OutlinedFunction getOutliningCandidateInfo (std::vector< outliner::Candidate > &RepeatedSequenceLocs) const override
 
outliner::InstrType getOutliningType (MachineBasicBlock::iterator &MIT, unsigned Flags) const override
 
bool isMBBSafeToOutlineFrom (MachineBasicBlock &MBB, 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, const outliner::Candidate &C) const override
 
bool shouldOutlineFromFunctionByDefault (MachineFunction &MF) const override
 Enable outlining by default at -Oz. More...
 
bool isUnspillableTerminatorImpl (const MachineInstr *MI) const override
 
bool isFpMLxInstruction (unsigned Opcode) const
 isFpMLxInstruction - Return true if the specified opcode is a fp MLA / MLS instruction. More...
 
bool isFpMLxInstruction (unsigned Opcode, unsigned &MulOpc, unsigned &AddSubOpc, bool &NegAcc, bool &HasLane) const
 isFpMLxInstruction - This version also returns the multiply opcode and the addition / subtraction opcode to expand to. More...
 
bool canCauseFpMLxStall (unsigned Opcode) const
 canCauseFpMLxStall - Return true if an instruction of the specified opcode will cause stalls when scheduled after (within 4-cycle window) a fp MLA / MLS instruction. More...
 
bool isSwiftFastImmShift (const MachineInstr *MI) const
 Returns true if the instruction has a shift by immediate that can be executed in one cycle less. More...
 
unsigned getFramePred (const MachineInstr &MI) const
 Returns predicate register associated with the given frame instruction. More...
 
Optional< RegImmPair > isAddImmediate (const MachineInstr &MI, Register Reg) const override
 

Additional Inherited Members

- Static Public Member Functions inherited from llvm::ARMBaseInstrInfo
static bool isCPSRDefined (const MachineInstr &MI)
 
- Protected Member Functions inherited from llvm::ARMBaseInstrInfo
 ARMBaseInstrInfo (const ARMSubtarget &STI)
 
void expandLoadStackGuardBase (MachineBasicBlock::iterator MI, unsigned LoadImmOpc, unsigned LoadOpc) const
 
bool getRegSequenceLikeInputs (const MachineInstr &MI, unsigned DefIdx, SmallVectorImpl< RegSubRegPairAndIdx > &InputRegs) const override
 Build the equivalent inputs of a REG_SEQUENCE for the given MI and DefIdx. More...
 
bool getExtractSubregLikeInputs (const MachineInstr &MI, unsigned DefIdx, RegSubRegPairAndIdx &InputReg) const override
 Build the equivalent inputs of a EXTRACT_SUBREG for the given MI and DefIdx. More...
 
bool getInsertSubregLikeInputs (const MachineInstr &MI, unsigned DefIdx, RegSubRegPair &BaseReg, RegSubRegPairAndIdx &InsertedReg) const override
 Build the equivalent inputs of a INSERT_SUBREG for the given MI and DefIdx. More...
 
MachineInstr * commuteInstructionImpl (MachineInstr &MI, bool NewMI, unsigned OpIdx1, unsigned OpIdx2) const override
 Commutes the operands in the given instruction. More...
 
Optional< DestSourcePair > isCopyInstrImpl (const MachineInstr &MI) const override
 If the specific machine instruction is an instruction that moves/copies value from one register to another register return destination and source registers as machine operands. More...
 
Optional< ParamLoadedValue > describeLoadedValue (const MachineInstr &MI, Register Reg) const override
 Specialization of TargetInstrInfo::describeLoadedValue, used to enhance debug entry value descriptions for ARM targets. More...
 

Detailed Description

Definition at line 23 of file Thumb2InstrInfo.h.

Constructor & Destructor Documentation

◆ Thumb2InstrInfo()

Thumb2InstrInfo::Thumb2InstrInfo ( const ARMSubtarget &  STI)
explicit

Definition at line 48 of file Thumb2InstrInfo.cpp.

Member Function Documentation

◆ commuteInstructionImpl()

MachineInstr * Thumb2InstrInfo::commuteInstructionImpl ( MachineInstr &  MI,
bool  NewMI,
unsigned  OpIdx1,
unsigned  OpIdx2 
) const
override

Definition at line 259 of file Thumb2InstrInfo.cpp.

References llvm::ARMBaseInstrInfo::commuteInstructionImpl(), llvm::getVPTInstrPredicate(), MI, and llvm::ARMVCC::None.

◆ copyPhysReg()

void Thumb2InstrInfo::copyPhysReg ( MachineBasicBlock &  MBB,
MachineBasicBlock::iterator  I,
const DebugLoc &  DL,
MCRegister  DestReg,
MCRegister  SrcReg,
bool  KillSrc 
) const
override

Definition at line 150 of file Thumb2InstrInfo.cpp.

References llvm::MachineInstrBuilder::add(), llvm::MachineInstrBuilder::addReg(), llvm::ARMCC::AL, llvm::BuildMI(), contains(), llvm::ARMBaseInstrInfo::copyPhysReg(), DL, get, llvm::getKillRegState(), I, MBB, and llvm::predOps().

◆ getNop()

MCInst Thumb2InstrInfo::getNop ( ) const
override

Return the noop instruction to use for a noop.

Definition at line 52 of file Thumb2InstrInfo.cpp.

References llvm::MCInstBuilder::addImm(), llvm::MCInstBuilder::addReg(), and llvm::ARMCC::AL.

◆ getRegisterInfo()

const ThumbRegisterInfo& llvm::Thumb2InstrInfo::getRegisterInfo ( ) const
inlineoverridevirtual

getRegisterInfo - TargetInstrInfo is a superset of MRegister info.

As such, whenever a client has an instance of instruction info, it should always be able to get register info as well (through this method).

Implements llvm::ARMBaseInstrInfo.

Definition at line 61 of file Thumb2InstrInfo.h.

◆ getUnindexedOpcode()

unsigned Thumb2InstrInfo::getUnindexedOpcode ( unsigned  Opc) const
overridevirtual

Implements llvm::ARMBaseInstrInfo.

Definition at line 56 of file Thumb2InstrInfo.cpp.

◆ isLegalToSplitMBBAt()

bool Thumb2InstrInfo::isLegalToSplitMBBAt ( MachineBasicBlock &  MBB,
MachineBasicBlock::iterator  MBBI 
) const
override

Definition at line 113 of file Thumb2InstrInfo.cpp.

References llvm::ARMCC::AL, llvm::MachineBasicBlock::end(), llvm::getITInstrPredicate(), MBB, and MBBI.

◆ loadRegFromStackSlot()

void Thumb2InstrInfo::loadRegFromStackSlot ( MachineBasicBlock &  MBB,
MachineBasicBlock::iterator  MBBI,
Register  DestReg,
int  FrameIndex,
const TargetRegisterClass *  RC,
const TargetRegisterInfo *  TRI 
) const
override

Definition at line 207 of file Thumb2InstrInfo.cpp.

References llvm::MachineInstrBuilder::add(), llvm::ARMBaseInstrInfo::AddDReg(), llvm::MachineInstrBuilder::addFrameIndex(), llvm::MachineInstrBuilder::addImm(), llvm::MachineInstrBuilder::addMemOperand(), llvm::MachineInstrBuilder::addReg(), llvm::ARMCC::AL, llvm::BuildMI(), llvm::MachineRegisterInfo::constrainRegClass(), llvm::RegState::DefineNoRead, DL, llvm::MachineBasicBlock::end(), get, llvm::MachinePointerInfo::getFixedStack(), llvm::MachineFunction::getFrameInfo(), llvm::MachineFunction::getMachineMemOperand(), llvm::MachineFrameInfo::getObjectAlign(), llvm::MachineFrameInfo::getObjectSize(), llvm::MachineBasicBlock::getParent(), llvm::MachineFunction::getRegInfo(), I, llvm::RegState::ImplicitDefine, llvm::Register::isPhysicalRegister(), llvm::Register::isVirtualRegister(), llvm::ARMBaseInstrInfo::loadRegFromStackSlot(), MBB, llvm::MachineMemOperand::MOLoad, MRI, llvm::predOps(), and TRI.

◆ optimizeSelect()

MachineInstr * Thumb2InstrInfo::optimizeSelect ( MachineInstr &  MI,
SmallPtrSetImpl< MachineInstr * > &  SeenMIs,
bool  PreferFalse 
) const
override

Definition at line 126 of file Thumb2InstrInfo.cpp.

References llvm::MachineInstrBuilder::add(), llvm::BuildMI(), get, llvm::ARMBaseInstrInfo::getSubtarget(), llvm::SmallPtrSetImpl< PtrType >::insert(), llvm::Register::isVirtual(), MI, llvm::ARMBaseInstrInfo::optimizeSelect(), and PreferNoCSEL.

◆ ReplaceTailWithBranchTo()

void Thumb2InstrInfo::ReplaceTailWithBranchTo ( MachineBasicBlock::iterator  Tail,
MachineBasicBlock *  NewDest 
) const
override

Definition at line 62 of file Thumb2InstrInfo.cpp.

References llvm::ARMCC::AL, llvm::MachineBasicBlock::begin(), E, llvm::MachineBasicBlock::eraseFromParent(), llvm::MachineFunction::getInfo(), llvm::getInstrPredicate(), llvm::MachineBasicBlock::getParent(), llvm::ARMFunctionInfo::hasITBlocks(), llvm::BitmaskEnumDetail::Mask(), MBB, MBBI, llvm::TargetInstrInfo::ReplaceTailWithBranchTo(), and llvm::CallingConv::Tail.

◆ storeRegToStackSlot()

void Thumb2InstrInfo::storeRegToStackSlot ( MachineBasicBlock &  MBB,
MachineBasicBlock::iterator  MBBI,
Register  SrcReg,
bool  isKill,
int  FrameIndex,
const TargetRegisterClass *  RC,
const TargetRegisterInfo *  TRI 
) const
override

Definition at line 164 of file Thumb2InstrInfo.cpp.

References llvm::MachineInstrBuilder::add(), llvm::ARMBaseInstrInfo::AddDReg(), llvm::MachineInstrBuilder::addFrameIndex(), llvm::MachineInstrBuilder::addImm(), llvm::MachineInstrBuilder::addMemOperand(), llvm::MachineInstrBuilder::addReg(), llvm::ARMCC::AL, llvm::BuildMI(), llvm::MachineRegisterInfo::constrainRegClass(), DL, llvm::MachineBasicBlock::end(), get, llvm::MachinePointerInfo::getFixedStack(), llvm::MachineFunction::getFrameInfo(), llvm::getKillRegState(), llvm::MachineFunction::getMachineMemOperand(), llvm::MachineFrameInfo::getObjectAlign(), llvm::MachineFrameInfo::getObjectSize(), llvm::MachineBasicBlock::getParent(), llvm::MachineFunction::getRegInfo(), I, llvm::Register::isVirtualRegister(), MBB, llvm::MachineMemOperand::MOStore, MRI, llvm::predOps(), llvm::ARMBaseInstrInfo::storeRegToStackSlot(), and TRI.

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