LLVM 20.0.0git
Public Member Functions | Static Public Member Functions | Protected Member Functions | List of all members
llvm::ARMBaseInstrInfo Class Referenceabstract

#include "Target/ARM/ARMBaseInstrInfo.h"

Inheritance diagram for llvm::ARMBaseInstrInfo:
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Public Member Functions

bool hasNOP () const
 
virtual unsigned getUnindexedOpcode (unsigned Opc) const =0
 
MachineInstr * convertToThreeAddress (MachineInstr &MI, LiveVariables *LV, LiveIntervals *LIS) const override
 
virtual const ARMBaseRegisterInfo & getRegisterInfo () const =0
 
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.
 
unsigned getInstSizeInBytes (const MachineInstr &MI) const override
 GetInstSize - Returns the size of the specified MachineInstr.
 
Register isLoadFromStackSlot (const MachineInstr &MI, int &FrameIndex) const override
 
Register isStoreToStackSlot (const MachineInstr &MI, int &FrameIndex) const override
 
Register isLoadFromStackSlotPostFE (const MachineInstr &MI, int &FrameIndex) const override
 
Register 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, Register VReg) const override
 
void loadRegFromStackSlot (MachineBasicBlock &MBB, MachineBasicBlock::iterator MBBI, Register DestReg, int FrameIndex, const TargetRegisterClass *RC, const TargetRegisterInfo *TRI, Register VReg) 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.
 
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.
 
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.
 
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.
 
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.
 
unsigned getNumMicroOps (const InstrItineraryData *ItinData, const MachineInstr &MI) const override
 
std::optional< unsigned > getOperandLatency (const InstrItineraryData *ItinData, const MachineInstr &DefMI, unsigned DefIdx, const MachineInstr &UseMI, unsigned UseIdx) const override
 
std::optional< unsigned > 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.
 
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.
 
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.
 
std::optional< outliner::OutlinedFunction > getOutliningCandidateInfo (const MachineModuleInfo &MMI, std::vector< outliner::Candidate > &RepeatedSequenceLocs) const override
 
void mergeOutliningCandidateAttributes (Function &F, std::vector< outliner::Candidate > &Candidates) const override
 
outliner::InstrType getOutliningTypeImpl (const MachineModuleInfo &MMI, 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, outliner::Candidate &C) const override
 
bool shouldOutlineFromFunctionByDefault (MachineFunction &MF) const override
 Enable outlining by default at -Oz.
 
bool isUnspillableTerminatorImpl (const MachineInstr *MI) const override
 
std::unique_ptr< TargetInstrInfo::PipelinerLoopInfo > analyzeLoopForPipelining (MachineBasicBlock *LoopBB) const override
 Analyze loop L, which must be a single-basic-block loop, and if the conditions can be understood enough produce a PipelinerLoopInfo object.
 
bool isFpMLxInstruction (unsigned Opcode) const
 isFpMLxInstruction - Return true if the specified opcode is a fp MLA / MLS instruction.
 
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.
 
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.
 
bool isSwiftFastImmShift (const MachineInstr *MI) const
 Returns true if the instruction has a shift by immediate that can be executed in one cycle less.
 
unsigned getFramePred (const MachineInstr &MI) const
 Returns predicate register associated with the given frame instruction.
 
std::optional< RegImmPair > isAddImmediate (const MachineInstr &MI, Register Reg) const override
 
unsigned getUndefInitOpcode (unsigned RegClassID) const override
 

Static Public Member Functions

static bool isCPSRDefined (const MachineInstr &MI)
 

Protected Member Functions

 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.
 
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.
 
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.
 
MachineInstr * commuteInstructionImpl (MachineInstr &MI, bool NewMI, unsigned OpIdx1, unsigned OpIdx2) const override
 Commutes the operands in the given instruction.
 
std::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.
 
std::optional< ParamLoadedValue > describeLoadedValue (const MachineInstr &MI, Register Reg) const override
 Specialization of TargetInstrInfo::describeLoadedValue, used to enhance debug entry value descriptions for ARM targets.
 

Detailed Description

Definition at line 42 of file ARMBaseInstrInfo.h.

Constructor & Destructor Documentation

◆ ARMBaseInstrInfo()

ARMBaseInstrInfo::ARMBaseInstrInfo ( const ARMSubtarget &  STI)
explicitprotected

Definition at line 116 of file ARMBaseInstrInfo.cpp.

References ARM_MLxTable, llvm::DenseMapBase< DerivedT, KeyT, ValueT, KeyInfoT, BucketT >::insert(), llvm::SmallSet< T, N, C >::insert(), llvm_unreachable, and ARM_MLxEntry::MLxOpc.

Member Function Documentation

◆ AddDReg()

const MachineInstrBuilder & ARMBaseInstrInfo::AddDReg ( MachineInstrBuilder &  MIB,
unsigned  Reg,
unsigned  SubIdx,
unsigned  State,
const TargetRegisterInfo *  TRI 
) const

Definition at line 1105 of file ARMBaseInstrInfo.cpp.

References llvm::MachineInstrBuilder::addReg(), llvm::Register::isPhysicalRegister(), and TRI.

Referenced by loadRegFromStackSlot(), llvm::Thumb2InstrInfo::loadRegFromStackSlot(), storeRegToStackSlot(), and llvm::Thumb2InstrInfo::storeRegToStackSlot().

◆ analyzeBranch()

bool ARMBaseInstrInfo::analyzeBranch ( MachineBasicBlock &  MBB,
MachineBasicBlock *&  TBB,
MachineBasicBlock *&  FBB,
SmallVectorImpl< MachineOperand > &  Cond,
bool  AllowModify = false 
) const
override

Definition at line 356 of file ARMBaseInstrInfo.cpp.

References assert(), llvm::MachineBasicBlock::back(), Cond, llvm::MachineOperand::CreateImm(), llvm::ARMSubtarget::enableMachinePipeliner(), llvm::MachineInstr::eraseFromParent(), llvm::MachineInstr::getOpcode(), llvm::MachineBasicBlock::getParent(), llvm::MachineFunction::getSubtarget(), I, llvm::MachineBasicBlock::instr_begin(), llvm::MachineBasicBlock::instr_end(), llvm::isCondBranchOpcode(), llvm::isIndirectBranchOpcode(), llvm::isJumpTableBranchOpcode(), llvm::MachineBasicBlock::isLayoutSuccessor(), isPredicated(), llvm::isSpeculationBarrierEndBBOpcode(), llvm::isUncondBranchOpcode(), MBB, removeBranch(), and TBB.

◆ analyzeCompare()

bool ARMBaseInstrInfo::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.

Return true if the comparison instruction can be analyzed.

Definition at line 2788 of file ARMBaseInstrInfo.cpp.

References MI.

Referenced by shouldSink().

◆ analyzeLoopForPipelining()

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

Analyze loop L, which must be a single-basic-block loop, and if the conditions can be understood enough produce a PipelinerLoopInfo object.

Definition at line 6977 of file ARMBaseInstrInfo.cpp.

References llvm::MachineBasicBlock::end(), llvm::MachineBasicBlock::getFirstTerminator(), llvm::MachineInstr::getOpcode(), llvm::MachineBasicBlock::getParent(), llvm::MachineFunction::getRegInfo(), I, llvm::MachineBasicBlock::instrs(), isCPSRDefined(), llvm::isVCTP(), MRI, and llvm::MachineBasicBlock::pred_begin().

◆ analyzeSelect()

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

Definition at line 2319 of file ARMBaseInstrInfo.cpp.

References assert(), Cond, and MI.

◆ areLoadsFromSameBasePtr()

bool ARMBaseInstrInfo::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.

It should only return true if the base pointers are the same and the only differences between the two addresses is the offset. It also returns the offsets by reference.

It should only return true if the base pointers are the same and the only differences between the two addresses is the offset. It also returns the offsets by reference.

FIXME: remove this in favor of the MachineInstr interface once pre-RA-sched is permanently disabled.

Definition at line 1948 of file ARMBaseInstrInfo.cpp.

References llvm::SDNode::getMachineOpcode(), llvm::SDNode::getOperand(), llvm::SDNode::isMachineOpcode(), and llvm::ARMSubtarget::isThumb1Only().

◆ breakPartialRegDependency()

void ARMBaseInstrInfo::breakPartialRegDependency ( MachineInstr &  MI,
unsigned  OpNum,
const TargetRegisterInfo *  TRI 
) const
override

Definition at line 5401 of file ARMBaseInstrInfo.cpp.

References llvm::MachineInstrBuilder::add(), llvm::MachineInstrBuilder::addImm(), llvm::ARMCC::AL, assert(), llvm::BuildMI(), contains(), llvm::get(), llvm::MachineOperand::getReg(), MI, llvm::predOps(), and TRI.

◆ buildOutlinedFrame()

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

Definition at line 6583 of file ARMBaseInstrInfo.cpp.

References llvm::MachineInstrBuilder::add(), llvm::MachineBasicBlock::addLiveIn(), llvm::ARMCC::AL, llvm::any_of(), assert(), llvm::MachineBasicBlock::begin(), llvm::BuildMI(), llvm::outliner::OutlinedFunction::Candidates, llvm::MachineBasicBlock::end(), llvm::outliner::OutlinedFunction::FrameConstructionID, llvm::get(), llvm::ARMSubtarget::getReturnOpcode(), llvm::MachineBasicBlock::instr_end(), llvm::MachineBasicBlock::instrs(), llvm::MachineBasicBlock::isLiveIn(), llvm::ARMSubtarget::isTargetMachO(), isThumb(), MachineOutlinerDefault, MachineOutlinerTailCall, MachineOutlinerThunk, MBB, MI, and llvm::predOps().

◆ canCauseFpMLxStall()

bool llvm::ARMBaseInstrInfo::canCauseFpMLxStall ( unsigned  Opcode) const
inline

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.

Definition at line 523 of file ARMBaseInstrInfo.h.

References llvm::SmallSet< T, N, C >::count().

◆ ClobbersPredicate()

bool ARMBaseInstrInfo::ClobbersPredicate ( MachineInstr &  MI,
std::vector< MachineOperand > &  Pred,
bool  SkipDead 
) const
override

Definition at line 662 of file ARMBaseInstrInfo.cpp.

References MI, llvm::ARMII::ThumbArithFlagSetting, and llvm::MCInstrDesc::TSFlags.

◆ commuteInstructionImpl()

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

Commutes the operands in the given instruction.

The commutable operands are specified by their indices OpIdx1 and OpIdx2.

Do not call this method for a non-commutable instruction or for non-commutable pair of operand indices OpIdx1 and OpIdx2. Even though the instruction is commutable, the method may still fail to commute the operands, null pointer is returned in such cases.

Definition at line 2256 of file ARMBaseInstrInfo.cpp.

References llvm::ARMCC::AL, CC, llvm::TargetInstrInfo::commuteInstructionImpl(), llvm::MachineInstr::findFirstPredOperandIdx(), llvm::getInstrPredicate(), llvm::MachineInstr::getOperand(), llvm::ARMCC::getOppositeCondition(), MI, and llvm::MachineOperand::setImm().

Referenced by llvm::Thumb2InstrInfo::commuteInstructionImpl().

◆ convertToThreeAddress()

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

Definition at line 180 of file ARMBaseInstrInfo.cpp.

References llvm::MachineInstrBuilder::add(), llvm::MachineInstrBuilder::addImm(), llvm::MachineInstrBuilder::addReg(), llvm::ARMII::AddrMode2, llvm::ARMII::AddrMode3, llvm::ARMII::AddrModeMask, llvm::LiveVariables::addVirtualRegisterDead(), llvm::LiveVariables::addVirtualRegisterKilled(), llvm::sampleprof::Base, llvm::BuildMI(), llvm::condCodeOp(), EnableARM3Addr, llvm::get(), llvm::ARM_AM::getAM2Offset(), llvm::ARM_AM::getAM2Op(), llvm::ARM_AM::getAM2ShiftOpc(), llvm::ARM_AM::getAM3Offset(), llvm::ARM_AM::getAM3Op(), llvm::MCInstrDesc::getNumOperands(), llvm::MachineInstr::getOperand(), llvm::MachineOperand::getReg(), llvm::ARM_AM::getSOImmVal(), llvm::ARM_AM::getSORegOpc(), getUnindexedOpcode(), llvm::LiveVariables::getVarInfo(), llvm::ARMII::IndexModeMask, llvm::ARMII::IndexModePost, llvm::ARMII::IndexModePre, llvm::ARMII::IndexModeShift, llvm::MachineBasicBlock::insert(), llvm::MachineOperand::isDead(), isLoad(), llvm_unreachable, MBB, MI, llvm::Offset, llvm::predOps(), llvm::MachineInstr::readsRegister(), llvm::MachineOperand::setIsDead(), and llvm::ARM_AM::sub.

◆ copyFromCPSR()

void ARMBaseInstrInfo::copyFromCPSR ( MachineBasicBlock &  MBB,
MachineBasicBlock::iterator  I,
unsigned  DestReg,
bool  KillSrc,
const ARMSubtarget &  Subtarget 
) const

Definition at line 828 of file ARMBaseInstrInfo.cpp.

References llvm::MachineInstrBuilder::add(), llvm::MachineInstrBuilder::addImm(), llvm::MachineInstrBuilder::addReg(), llvm::ARMCC::AL, llvm::BuildMI(), llvm::get(), llvm::getKillRegState(), I, llvm::RegState::Implicit, llvm::ARMSubtarget::isMClass(), MBB, and llvm::predOps().

Referenced by copyPhysReg().

◆ copyPhysReg()

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

Definition at line 892 of file ARMBaseInstrInfo.cpp.

References llvm::MachineInstrBuilder::add(), llvm::MachineInstrBuilder::addReg(), llvm::MachineInstr::addRegisterDefined(), llvm::MachineInstr::addRegisterKilled(), llvm::addUnpredicatedMveVpredROp(), llvm::ARMCC::AL, assert(), llvm::BuildMI(), llvm::condCodeOp(), contains(), copyFromCPSR(), copyToCPSR(), llvm::SmallSet< T, N, C >::count(), DL, llvm::get(), llvm::getKillRegState(), getRegisterInfo(), I, llvm::SmallSet< T, N, C >::insert(), llvm::ARMSubtarget::isThumb2(), MBB, llvm::predOps(), and TRI.

Referenced by llvm::Thumb2InstrInfo::copyPhysReg(), and insertOutlinedCall().

◆ copyToCPSR()

void ARMBaseInstrInfo::copyToCPSR ( MachineBasicBlock &  MBB,
MachineBasicBlock::iterator  I,
unsigned  SrcReg,
bool  KillSrc,
const ARMSubtarget &  Subtarget 
) const

Definition at line 848 of file ARMBaseInstrInfo.cpp.

References llvm::MachineInstrBuilder::add(), llvm::MachineInstrBuilder::addImm(), llvm::MachineInstrBuilder::addReg(), llvm::ARMCC::AL, llvm::BuildMI(), llvm::RegState::Define, llvm::get(), llvm::getKillRegState(), I, llvm::RegState::Implicit, llvm::ARMSubtarget::isMClass(), MBB, and llvm::predOps().

Referenced by copyPhysReg().

◆ createMIROperandComment()

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

Definition at line 577 of file ARMBaseInstrInfo.cpp.

References llvm::ARMCondCodeToString(), CC, llvm::TargetInstrInfo::createMIROperandComment(), MI, and TRI.

◆ CreateTargetHazardRecognizer()

ScheduleHazardRecognizer * ARMBaseInstrInfo::CreateTargetHazardRecognizer ( const TargetSubtargetInfo *  STI,
const ScheduleDAG *  DAG 
) const
override

Definition at line 130 of file ARMBaseInstrInfo.cpp.

References llvm::TargetInstrInfo::CreateTargetHazardRecognizer(), and II.

◆ CreateTargetMIHazardRecognizer()

ScheduleHazardRecognizer * ARMBaseInstrInfo::CreateTargetMIHazardRecognizer ( const InstrItineraryData *  II,
const ScheduleDAGMI *  DAG 
) const
override

Definition at line 143 of file ARMBaseInstrInfo.cpp.

References llvm::MultiHazardRecognizer::AddHazardRecognizer(), llvm::TargetInstrInfo::CreateTargetMIHazardRecognizer(), llvm::ScheduleDAGMI::hasVRegLiveness(), II, and llvm::ARMSubtarget::isCortexM7().

◆ CreateTargetPostRAHazardRecognizer()

ScheduleHazardRecognizer * ARMBaseInstrInfo::CreateTargetPostRAHazardRecognizer ( const InstrItineraryData *  II,
const ScheduleDAG *  DAG 
) const
override

Definition at line 165 of file ARMBaseInstrInfo.cpp.

References llvm::MultiHazardRecognizer::AddHazardRecognizer(), llvm::TargetInstrInfo::CreateTargetPostRAHazardRecognizer(), llvm::ARMSubtarget::hasVFP2Base(), II, and llvm::ARMSubtarget::isThumb2().

◆ decomposeMachineOperandsTargetFlags()

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

Definition at line 5530 of file ARMBaseInstrInfo.cpp.

References llvm::ARMII::MO_OPTION_MASK.

◆ describeLoadedValue()

std::optional< ParamLoadedValue > ARMBaseInstrInfo::describeLoadedValue ( const MachineInstr &  MI,
Register  Reg 
) const
overrideprotected

Specialization of TargetInstrInfo::describeLoadedValue, used to enhance debug entry value descriptions for ARM targets.

Definition at line 1075 of file ARMBaseInstrInfo.cpp.

References llvm::TargetInstrInfo::describeLoadedValue(), isCopyInstrImpl(), and MI.

◆ duplicate()

MachineInstr & ARMBaseInstrInfo::duplicate ( MachineBasicBlock &  MBB,
MachineBasicBlock::iterator  InsertBefore,
const MachineInstr &  Orig 
) const
override

Definition at line 1837 of file ARMBaseInstrInfo.cpp.

References llvm::TargetInstrInfo::duplicate(), duplicateCPV(), llvm::ilist_node_impl< OptionsT >::getIterator(), llvm::MachineBasicBlock::getParent(), I, and MBB.

◆ expandLoadStackGuardBase()

void ARMBaseInstrInfo::expandLoadStackGuardBase ( MachineBasicBlock::iterator  MI,
unsigned  LoadImmOpc,
unsigned  LoadOpc 
) const
protected

Definition at line 4913 of file ARMBaseInstrInfo.cpp.

References llvm::MachineInstrBuilder::add(), llvm::MachineInstrBuilder::addGlobalAddress(), llvm::MachineInstrBuilder::addImm(), llvm::MachineInstrBuilder::addMemOperand(), llvm::MachineInstrBuilder::addReg(), llvm::ARMCC::AL, assert(), llvm::BuildMI(), llvm::MachineInstrBuilder::cloneMemRefs(), DL, llvm::get(), llvm::MachineFunction::getFunction(), llvm::MachinePointerInfo::getGOT(), llvm::MachineFunction::getMachineMemOperand(), llvm::GlobalValue::getParent(), llvm::MachineBasicBlock::getParent(), llvm::GlobalValue::hasDLLImportStorageClass(), llvm::ARMSubtarget::isGVIndirectSymbol(), llvm::ARMSubtarget::isReadTPSoft(), llvm::ARMSubtarget::isROPI(), llvm::ARMSubtarget::isRWPI(), llvm::ARMSubtarget::isTargetCOFF(), llvm::ARMSubtarget::isTargetMachO(), llvm::RegState::Kill, MBB, MI, llvm::ARMII::MO_COFFSTUB, llvm::ARMII::MO_DLLIMPORT, llvm::ARMII::MO_GOT, llvm::ARMII::MO_NO_FLAG, llvm::ARMII::MO_NONLAZY, llvm::MachineMemOperand::MODereferenceable, llvm::MachineMemOperand::MOInvariant, llvm::MachineMemOperand::MOLoad, llvm::Offset, and llvm::predOps().

◆ expandPostRAPseudo()

bool ARMBaseInstrInfo::expandPostRAPseudo ( MachineInstr &  MI) const
override

Definition at line 1686 of file ARMBaseInstrInfo.cpp.

References llvm::MachineInstrBuilder::add(), llvm::MachineInstrBuilder::addReg(), llvm::ARMCC::AL, contains(), llvm::dbgs(), llvm::get(), getRegisterInfo(), llvm::RegState::Implicit, LLVM_DEBUG, MI, llvm::predOps(), and TRI.

◆ extraSizeToPredicateInstructions()

unsigned ARMBaseInstrInfo::extraSizeToPredicateInstructions ( const MachineFunction &  MF,
unsigned  NumInsts 
) const
override

Definition at line 2186 of file ARMBaseInstrInfo.cpp.

References llvm::divideCeil(), llvm::ARMSubtarget::isThumb2(), and llvm::ARMSubtarget::restrictIT().

◆ foldImmediate()

bool ARMBaseInstrInfo::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.

Definition at line 3312 of file ARMBaseInstrInfo.cpp.

References llvm::MachineInstrBuilder::add(), llvm::MachineInstrBuilder::addImm(), llvm::MachineInstrBuilder::addReg(), llvm::ARMCC::AL, llvm::BuildMI(), llvm::condCodeOp(), DefMI, llvm::get(), llvm::getKillRegState(), llvm::MCInstrDesc::getNumOperands(), llvm::MachineOperand::getReg(), llvm::MachineInstrBuilder::getReg(), llvm::ARM_AM::getSOImmTwoPartFirst(), llvm::ARM_AM::getSOImmTwoPartSecond(), llvm::ARM_AM::getT2SOImmTwoPartFirst(), llvm::ARM_AM::getT2SOImmTwoPartSecond(), llvm::MCInstrDesc::hasOptionalDef(), llvm::MachineOperand::isDead(), llvm::ARM_AM::isSOImmTwoPartVal(), llvm::ARM_AM::isT2SOImmTwoPartVal(), MRI, llvm::predOps(), and UseMI.

◆ getExecutionDomain()

std::pair< uint16_t, uint16_t > ARMBaseInstrInfo::getExecutionDomain ( const MachineInstr &  MI) const
override

VFP/NEON execution domains.

Definition at line 5042 of file ARMBaseInstrInfo.cpp.

References llvm::ARMII::DomainMask, llvm::ARMII::DomainNEON, llvm::ARMII::DomainNEONA8, llvm::ARMII::DomainVFP, ExeGeneric, ExeNEON, ExeVFP, llvm::ARMSubtarget::isCortexA8(), isPredicated(), and MI.

◆ getExtractSubregLikeInputs()

bool ARMBaseInstrInfo::getExtractSubregLikeInputs ( const MachineInstr &  MI,
unsigned  DefIdx,
RegSubRegPairAndIdx &  InputReg 
) const
overrideprotected

Build the equivalent inputs of a EXTRACT_SUBREG for the given MI and DefIdx.

[out] InputReg of the equivalent EXTRACT_SUBREG. E.g., EXTRACT_SUBREG %1:sub1, sub0, sub1 would produce:

  • %1:sub1, sub0
Returns
true if it is possible to build such an input sequence with the pair MI, DefIdx. False otherwise.
Precondition
MI.isExtractSubregLike().

Definition at line 5479 of file ARMBaseInstrInfo.cpp.

References assert(), llvm::MachineOperand::getReg(), llvm::MachineOperand::getSubReg(), llvm::MachineOperand::isUndef(), llvm_unreachable, MI, llvm::TargetInstrInfo::RegSubRegPair::Reg, llvm::TargetInstrInfo::RegSubRegPairAndIdx::SubIdx, and llvm::TargetInstrInfo::RegSubRegPair::SubReg.

◆ getFramePred()

unsigned llvm::ARMBaseInstrInfo::getFramePred ( const MachineInstr &  MI) const
inline

Returns predicate register associated with the given frame instruction.

Definition at line 532 of file ARMBaseInstrInfo.h.

References assert(), and MI.

◆ getInsertSubregLikeInputs()

bool ARMBaseInstrInfo::getInsertSubregLikeInputs ( const MachineInstr &  MI,
unsigned  DefIdx,
RegSubRegPair &  BaseReg,
RegSubRegPairAndIdx &  InsertedReg 
) const
overrideprotected

Build the equivalent inputs of a INSERT_SUBREG for the given MI and DefIdx.

[out] BaseReg and [out] InsertedReg contain the equivalent inputs of INSERT_SUBREG. E.g., INSERT_SUBREG %0:sub0, %1:sub1, sub3 would produce:

  • BaseReg: %0:sub0
  • InsertedReg: %1:sub1, sub3
Returns
true if it is possible to build such an input sequence with the pair MI, DefIdx. False otherwise.
Precondition
MI.isInsertSubregLike().

Definition at line 5502 of file ARMBaseInstrInfo.cpp.

References assert(), llvm::MachineOperand::getImm(), llvm::MachineOperand::getReg(), llvm::MachineOperand::getSubReg(), llvm::MachineOperand::isUndef(), llvm_unreachable, MI, llvm::TargetInstrInfo::RegSubRegPair::Reg, llvm::TargetInstrInfo::RegSubRegPairAndIdx::SubIdx, and llvm::TargetInstrInfo::RegSubRegPair::SubReg.

◆ getInstSizeInBytes()

unsigned ARMBaseInstrInfo::getInstSizeInBytes ( const MachineInstr &  MI) const
override

GetInstSize - Returns the size of the specified MachineInstr.

GetInstSize - Return the size of the specified MachineInstr.

Definition at line 779 of file ARMBaseInstrInfo.cpp.

References llvm::alignTo(), llvm::MachineFunction::getInfo(), llvm::TargetMachine::getMCAsmInfo(), llvm::MachineBasicBlock::getParent(), llvm::MCInstrDesc::getSize(), llvm::MachineFunction::getTarget(), llvm::ARMFunctionInfo::isThumbFunction(), MBB, MI, and Size.

Referenced by llvm::ARMBasicBlockUtils::computeBlockSize(), llvm::ARMBasicBlockUtils::getOffsetOf(), getOutliningCandidateInfo(), and predictBranchSizeForIfCvt().

◆ getNumLDMAddresses()

unsigned ARMBaseInstrInfo::getNumLDMAddresses ( const MachineInstr &  MI) const

Get the number of addresses by LDM or VLDM or zero for unknown.

Definition at line 3709 of file ARMBaseInstrInfo.cpp.

References I, MI, and Size.

◆ getNumMicroOps()

unsigned ARMBaseInstrInfo::getNumMicroOps ( const InstrItineraryData *  ItinData,
const MachineInstr &  MI 
) const
override

Definition at line 3763 of file ARMBaseInstrInfo.cpp.

References llvm::ARMSubtarget::DoubleIssue, llvm::ARMSubtarget::DoubleIssueCheckUnalignedAccess, llvm::getAlign(), llvm::ARMSubtarget::getLdStMultipleTiming(), llvm::InstrItineraryData::getNumMicroOps(), getNumMicroOpsSingleIssuePlusExtras(), getNumMicroOpsSwiftLdSt(), llvm::InstrItineraryData::isEmpty(), llvm::ARMSubtarget::isSwift(), llvm_unreachable, MI, llvm::ARMSubtarget::SingleIssue, and llvm::ARMSubtarget::SingleIssuePlusExtras.

◆ getOperandLatency() [1/2]

std::optional< unsigned > ARMBaseInstrInfo::getOperandLatency ( const InstrItineraryData *  ItinData,
const MachineInstr &  DefMI,
unsigned  DefIdx,
const MachineInstr &  UseMI,
unsigned  UseIdx 
) const
override

Definition at line 4363 of file ARMBaseInstrInfo.cpp.

References DefMI, getBundledDefMI(), getBundledUseMI(), llvm::MachineInstr::getDesc(), llvm::MachineOperand::getReg(), getRegisterInfo(), llvm::MachineInstr::isCopyLike(), llvm::InstrItineraryData::isEmpty(), llvm::MachineInstr::isImplicitDef(), llvm::MachineInstr::isInsertSubreg(), llvm::MachineInstr::isRegSequence(), and UseMI.

Referenced by getOperandLatency().

◆ getOperandLatency() [2/2]

std::optional< unsigned > ARMBaseInstrInfo::getOperandLatency ( const InstrItineraryData *  ItinData,
SDNode *  DefNode,
unsigned  DefIdx,
SDNode *  UseNode,
unsigned  UseIdx 
) const
override

Definition at line 4458 of file ARMBaseInstrInfo.cpp.

References llvm::get(), llvm::getAlign(), llvm::ARM_AM::getAM2Offset(), llvm::ARM_AM::getAM2ShiftOpc(), llvm::SDNode::getConstantOperandVal(), llvm::SDNode::getMachineOpcode(), llvm::MCInstrDesc::getOpcode(), llvm::InstrItineraryData::getOperandCycle(), getOperandLatency(), llvm::ARMSubtarget::getPreISelOperandLatencyAdjustment(), llvm::MCInstrDesc::getSchedClass(), llvm::ARMSubtarget::isCortexA7(), llvm::ARMSubtarget::isCortexA8(), llvm::InstrItineraryData::isEmpty(), llvm::ARMSubtarget::isLikeA9(), llvm::SDNode::isMachineOpcode(), llvm::ARMSubtarget::isSwift(), llvm::Latency, llvm::ARM_AM::lsl, llvm::ARM_AM::lsr, llvm::MCInstrDesc::mayLoad(), and llvm::MCInstrDesc::Opcode.

◆ getOutliningCandidateInfo()

std::optional< outliner::OutlinedFunction > ARMBaseInstrInfo::getOutliningCandidateInfo ( const MachineModuleInfo &  MMI,
std::vector< outliner::Candidate > &  RepeatedSequenceLocs 
) const
override

Definition at line 5875 of file ARMBaseInstrInfo.cpp.

References llvm::outliner::Candidate::back(), llvm::outliner::Candidate::begin(), llvm::ARMFunctionInfo::branchTargetEnforcement(), llvm::CallingConv::C, OutlinerCosts::CallDefault, OutlinerCosts::CallNoLRSave, OutlinerCosts::CallRegSave, OutlinerCosts::CallTailCall, OutlinerCosts::CallThunk, llvm::outliner::Candidate::end(), llvm::erase_if(), OutlinerCosts::FrameDefault, OutlinerCosts::FrameNoLRSave, OutlinerCosts::FrameRegSave, OutlinerCosts::FrameTailCall, OutlinerCosts::FrameThunk, getInstSizeInBytes(), getRegisterInfo(), llvm::MachineInstr::isCall(), isLRAvailable(), llvm::Last, MachineOutlinerDefault, MachineOutlinerNoLRSave, MachineOutlinerRegSave, MachineOutlinerTailCall, MachineOutlinerThunk, MI, llvm::partition(), OutlinerCosts::SaveRestoreLROnStack, llvm::ARMFunctionInfo::shouldSignReturnAddress(), TRI, and UnsafeRegsDead.

◆ getOutliningTypeImpl()

outliner::InstrType ARMBaseInstrInfo::getOutliningTypeImpl ( const MachineModuleInfo &  MMI,
MachineBasicBlock::iterator &  MIT,
unsigned  Flags 
) const
override

Definition at line 6282 of file ARMBaseInstrInfo.cpp.

References llvm::ARMII::DomainMask, llvm::ARMII::DomainMVE, llvm::MachineFunction::getFrameInfo(), llvm::MachineModuleInfo::getMachineFunction(), llvm::MachineFrameInfo::getNumObjects(), getRegisterInfo(), llvm::ARMSubtarget::getStackAlignment(), llvm::MachineFrameInfo::getStackSize(), llvm::outliner::Illegal, llvm::MachineFrameInfo::isCalleeSavedInfoValid(), llvm::outliner::Legal, llvm::outliner::LegalTerminator, MI, TRI, llvm::MCInstrDesc::TSFlags, and llvm::Align::value().

◆ getPartialRegUpdateClearance()

unsigned ARMBaseInstrInfo::getPartialRegUpdateClearance ( const MachineInstr &  MI,
unsigned  OpNum,
const TargetRegisterInfo *  TRI 
) const
override

Definition at line 5340 of file ARMBaseInstrInfo.cpp.

References assert(), contains(), llvm::ARMSubtarget::getPartialUpdateClearance(), llvm::MachineOperand::getReg(), llvm::MachineOperand::getSubReg(), MI, llvm::MachineOperand::readsReg(), and TRI.

◆ getPredicate()

ARMCC::CondCodes llvm::ARMBaseInstrInfo::getPredicate ( const MachineInstr &  MI) const
inline

Definition at line 170 of file ARMBaseInstrInfo.h.

References llvm::ARMCC::AL, and MI.

◆ getRegisterInfo()

virtual const ARMBaseRegisterInfo & llvm::ARMBaseInstrInfo::getRegisterInfo ( ) const
pure virtual

Implemented in llvm::ARMInstrInfo, llvm::Thumb1InstrInfo, and llvm::Thumb2InstrInfo.

Referenced by copyPhysReg(), expandPostRAPseudo(), getOperandLatency(), getOutliningCandidateInfo(), getOutliningTypeImpl(), isMBBSafeToOutlineFrom(), isProfitableToIfCvt(), loadRegFromStackSlot(), optimizeCompareInstr(), predictBranchSizeForIfCvt(), setExecutionDomain(), and storeRegToStackSlot().

◆ getRegSequenceLikeInputs()

bool ARMBaseInstrInfo::getRegSequenceLikeInputs ( const MachineInstr &  MI,
unsigned  DefIdx,
SmallVectorImpl< RegSubRegPairAndIdx > &  InputRegs 
) const
overrideprotected

Build the equivalent inputs of a REG_SEQUENCE for the given MI and DefIdx.

[out] InputRegs of the equivalent REG_SEQUENCE. Each element of the list is modeled as <Reg:SubReg, SubIdx>. E.g., REG_SEQUENCE %1:sub1, sub0, %2, sub1 would produce two elements:

  • %1:sub1, sub0
  • %2<:0>, sub1
Returns
true if it is possible to build such an input sequence with the pair MI, DefIdx. False otherwise.
Precondition
MI.isRegSequenceLike().

Definition at line 5452 of file ARMBaseInstrInfo.cpp.

References assert(), llvm::MachineOperand::getReg(), llvm::MachineOperand::getSubReg(), llvm::MachineOperand::isUndef(), llvm_unreachable, MI, and llvm::SmallVectorTemplateBase< T, bool >::push_back().

◆ getSerializableBitmaskMachineOperandTargetFlags()

ArrayRef< std::pair< unsigned, const char * > > ARMBaseInstrInfo::getSerializableBitmaskMachineOperandTargetFlags ( ) const
override

Definition at line 5548 of file ARMBaseInstrInfo.cpp.

◆ getSerializableDirectMachineOperandTargetFlags()

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

Definition at line 5536 of file ARMBaseInstrInfo.cpp.

◆ getSubtarget()

const ARMSubtarget & llvm::ARMBaseInstrInfo::getSubtarget ( ) const
inline

Definition at line 132 of file ARMBaseInstrInfo.h.

Referenced by isPredicable(), and llvm::Thumb2InstrInfo::optimizeSelect().

◆ getUndefInitOpcode()

unsigned llvm::ARMBaseInstrInfo::getUndefInitOpcode ( unsigned  RegClassID) const
inlineoverride

Definition at line 547 of file ARMBaseInstrInfo.h.

References llvm_unreachable.

◆ getUnindexedOpcode()

virtual unsigned llvm::ARMBaseInstrInfo::getUnindexedOpcode ( unsigned  Opc) const
pure virtual

Implemented in llvm::ARMInstrInfo, llvm::Thumb1InstrInfo, and llvm::Thumb2InstrInfo.

Referenced by convertToThreeAddress().

◆ hasNOP()

bool ARMBaseInstrInfo::hasNOP ( ) const

Definition at line 5434 of file ARMBaseInstrInfo.cpp.

Referenced by llvm::ARMInstrInfo::getNop().

◆ insertBranch()

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

Definition at line 499 of file ARMBaseInstrInfo.cpp.

References llvm::MachineInstrBuilder::add(), llvm::MachineInstrBuilder::addImm(), llvm::MachineInstrBuilder::addMBB(), llvm::ARMCC::AL, assert(), llvm::BuildMI(), Cond, DL, llvm::get(), llvm::MachineFunction::getInfo(), llvm::MachineBasicBlock::getParent(), isThumb(), llvm::ARMFunctionInfo::isThumb2Function(), llvm::ARMFunctionInfo::isThumbFunction(), MBB, llvm::predOps(), and TBB.

◆ insertOutlinedCall()

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

Definition at line 6659 of file ARMBaseInstrInfo.cpp.

References llvm::MachineInstrBuilder::add(), llvm::MachineInstrBuilder::addGlobalAddress(), llvm::MachineBasicBlock::addLiveIn(), llvm::ARMCC::AL, assert(), llvm::BuildMI(), llvm::CallingConv::C, copyPhysReg(), llvm::get(), llvm::MachineFunction::getName(), llvm::MachineBasicBlock::insert(), llvm::MachineBasicBlock::isLiveIn(), llvm::ARMFunctionInfo::isLRSpilled(), llvm::ARMSubtarget::isTargetMachO(), isThumb(), MachineOutlinerNoLRSave, MachineOutlinerRegSave, MachineOutlinerTailCall, MachineOutlinerThunk, MBB, llvm::predOps(), and llvm::ARMFunctionInfo::shouldSignReturnAddress().

◆ isAddImmediate()

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

Definition at line 5562 of file ARMBaseInstrInfo.cpp.

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

◆ isCopyInstrImpl()

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

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.

Definition at line 1059 of file ARMBaseInstrInfo.cpp.

References MI.

Referenced by describeLoadedValue().

◆ isCPSRDefined()

bool ARMBaseInstrInfo::isCPSRDefined ( const MachineInstr &  MI)
static

Definition at line 686 of file ARMBaseInstrInfo.cpp.

References MI.

Referenced by analyzeLoopForPipelining(), and isEligibleForITBlock().

◆ isFpMLxInstruction() [1/2]

bool llvm::ARMBaseInstrInfo::isFpMLxInstruction ( unsigned  Opcode) const
inline

isFpMLxInstruction - Return true if the specified opcode is a fp MLA / MLS instruction.

Definition at line 509 of file ARMBaseInstrInfo.h.

References llvm::DenseMapBase< DerivedT, KeyT, ValueT, KeyInfoT, BucketT >::count().

◆ isFpMLxInstruction() [2/2]

bool ARMBaseInstrInfo::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.

Return true for 'HasLane' for the MLX instructions with an extra lane operand.

Definition at line 5006 of file ARMBaseInstrInfo.cpp.

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

◆ isFunctionSafeToOutlineFrom()

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

ARM supports the MachineOutliner.

Definition at line 6210 of file ARMBaseInstrInfo.cpp.

References F, llvm::MachineFunction::getFunction(), llvm::MachineFunction::getInfo(), and llvm::ARMFunctionInfo::isThumb1OnlyFunction().

◆ isLoadFromStackSlot()

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

Definition at line 1559 of file ARMBaseInstrInfo.cpp.

References MI.

◆ isLoadFromStackSlotPostFE()

Register ARMBaseInstrInfo::isLoadFromStackSlotPostFE ( const MachineInstr &  MI,
int &  FrameIndex 
) const
override

Definition at line 1617 of file ARMBaseInstrInfo.cpp.

References llvm::SmallVectorTemplateCommon< T, typename >::front(), MI, and llvm::SmallVectorBase< Size_T >::size().

◆ isMBBSafeToOutlineFrom()

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

Definition at line 6233 of file ARMBaseInstrInfo.cpp.

References llvm::LiveRegUnits::accumulate(), llvm::LiveRegUnits::addLiveOuts(), llvm::any_of(), assert(), llvm::LiveRegUnits::available(), llvm::MachineBasicBlock::back(), llvm::MachineBasicBlock::getParent(), llvm::MachineFunction::getRegInfo(), getRegisterInfo(), llvm::MachineInstr::isCall(), isLRAvailable(), llvm::MachineBasicBlock::isReturnBlock(), MBB, MI, llvm::MachineBasicBlock::rbegin(), llvm::MachineBasicBlock::rend(), llvm::reverse(), and llvm::MachineRegisterInfo::tracksLiveness().

◆ isPredicable()

bool ARMBaseInstrInfo::isPredicable ( const MachineInstr &  MI) const
override

isPredicable - Return true if the specified instruction can be predicated.

By default, this returns true for every instruction with a PredicateOperand.

Definition at line 725 of file ARMBaseInstrInfo.cpp.

References llvm::ARMII::DomainMask, llvm::ARMII::DomainNEON, llvm::MachineFunction::getInfo(), llvm::MachineFunction::getSubtarget(), getSubtarget(), isEligibleForITBlock(), llvm::isIndirectCall(), llvm::isIndirectControlFlowNotComingBack(), llvm::ARMFunctionInfo::isThumb2Function(), llvm::isV8EligibleForIT(), MI, and llvm::ARMSubtarget::restrictIT().

◆ isPredicated()

bool ARMBaseInstrInfo::isPredicated ( const MachineInstr &  MI) const
override

Definition at line 561 of file ARMBaseInstrInfo.cpp.

References llvm::ARMCC::AL, I, and MI.

Referenced by analyzeBranch(), getExecutionDomain(), llvm::ARMBlockPlacement::moveBasicBlock(), optimizeCompareInstr(), setExecutionDomain(), and shouldSink().

◆ isProfitableToDupForIfCvt()

bool llvm::ARMBaseInstrInfo::isProfitableToDupForIfCvt ( MachineBasicBlock &  MBB,
unsigned  NumCycles,
BranchProbability  Probability 
) const
inlineoverride

Definition at line 280 of file ARMBaseInstrInfo.h.

◆ isProfitableToIfCvt() [1/2]

bool ARMBaseInstrInfo::isProfitableToIfCvt ( MachineBasicBlock &  MBB,
unsigned  NumCycles,
unsigned  ExtraPredCycles,
BranchProbability  Probability 
) const
override

Definition at line 2095 of file ARMBaseInstrInfo.cpp.

References llvm::MachineBasicBlock::empty(), llvm::findCMPToFoldIntoCBZ(), llvm::MachineFunction::getFunction(), llvm::MachineInstr::getOpcode(), llvm::MachineBasicBlock::getParent(), getRegisterInfo(), llvm::Function::hasOptSize(), isProfitableToIfCvt(), MBB, llvm::MachineBasicBlock::pred_begin(), llvm::MachineBasicBlock::rbegin(), and TRI.

Referenced by isProfitableToIfCvt().

◆ isProfitableToIfCvt() [2/2]

bool ARMBaseInstrInfo::isProfitableToIfCvt ( MachineBasicBlock &  TMBB,
unsigned  NumT,
unsigned  ExtraT,
MachineBasicBlock &  FMBB,
unsigned  NumF,
unsigned  ExtraF,
BranchProbability  Probability 
) const
override

Definition at line 2121 of file ARMBaseInstrInfo.cpp.

References llvm::BranchProbability::getCompl(), llvm::MachineFunction::getFunction(), llvm::ARMSubtarget::getMispredictionPenalty(), llvm::MachineBasicBlock::getParent(), llvm::Function::hasMinSize(), llvm::ARMSubtarget::isThumb2(), llvm::MachineBasicBlock::pred_size(), llvm::BranchProbability::scale(), and TBB.

◆ isProfitableToUnpredicate()

bool ARMBaseInstrInfo::isProfitableToUnpredicate ( MachineBasicBlock &  TMBB,
MachineBasicBlock &  FMBB 
) const
override

Definition at line 2223 of file ARMBaseInstrInfo.cpp.

◆ isSchedulingBoundary()

bool ARMBaseInstrInfo::isSchedulingBoundary ( const MachineInstr &  MI,
const MachineBasicBlock *  MBB,
const MachineFunction &  MF 
) const
override

Definition at line 2045 of file ARMBaseInstrInfo.cpp.

References llvm::MachineBasicBlock::end(), I, llvm::isSEHInstruction(), MBB, and MI.

Referenced by llvm::Thumb2InstrInfo::isSchedulingBoundary().

◆ isStoreToStackSlot()

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

Definition at line 1308 of file ARMBaseInstrInfo.cpp.

References MI.

◆ isStoreToStackSlotPostFE()

Register ARMBaseInstrInfo::isStoreToStackSlotPostFE ( const MachineInstr &  MI,
int &  FrameIndex 
) const
override

Definition at line 1360 of file ARMBaseInstrInfo.cpp.

References llvm::SmallVectorTemplateCommon< T, typename >::front(), MI, and llvm::SmallVectorBase< Size_T >::size().

◆ isSwiftFastImmShift()

bool ARMBaseInstrInfo::isSwiftFastImmShift ( const MachineInstr *  MI) const

Returns true if the instruction has a shift by immediate that can be executed in one cycle less.

Definition at line 5438 of file ARMBaseInstrInfo.cpp.

References llvm::ARM_AM::getSORegOffset(), llvm::ARM_AM::getSORegShOp(), llvm::ARM_AM::lsl, llvm::ARM_AM::lsr, and MI.

◆ isUnspillableTerminatorImpl()

bool llvm::ARMBaseInstrInfo::isUnspillableTerminatorImpl ( const MachineInstr *  MI) const
inlineoverride

Definition at line 378 of file ARMBaseInstrInfo.h.

References MI.

◆ loadRegFromStackSlot()

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

Definition at line 1373 of file ARMBaseInstrInfo.cpp.

References llvm::MachineInstrBuilder::add(), AddDReg(), llvm::MachineInstrBuilder::addFrameIndex(), llvm::MachineInstrBuilder::addImm(), llvm::MachineInstrBuilder::addMemOperand(), llvm::MachineInstrBuilder::addReg(), llvm::addUnpredicatedMveVpredNOp(), llvm::ARMCC::AL, llvm::BuildMI(), llvm::RegState::DefineNoRead, DL, llvm::MachineBasicBlock::end(), llvm::get(), llvm::MachinePointerInfo::getFixedStack(), llvm::MachineFunction::getFrameInfo(), llvm::MachineFunction::getMachineMemOperand(), llvm::MachineFrameInfo::getObjectAlign(), llvm::MachineFrameInfo::getObjectSize(), llvm::MachineBasicBlock::getParent(), getRegisterInfo(), I, llvm::RegState::ImplicitDefine, llvm::Register::isPhysical(), llvm_unreachable, MBB, llvm::MachineMemOperand::MOLoad, llvm::predOps(), and TRI.

Referenced by llvm::Thumb2InstrInfo::loadRegFromStackSlot().

◆ mergeOutliningCandidateAttributes()

void ARMBaseInstrInfo::mergeOutliningCandidateAttributes ( Function &  F,
std::vector< outliner::Candidate > &  Candidates 
) const
override

Definition at line 6198 of file ARMBaseInstrInfo.cpp.

References llvm::CallingConv::C, F, llvm::Function::getFnAttribute(), and llvm::Function::hasFnAttribute().

◆ optimizeCompareInstr()

bool ARMBaseInstrInfo::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.

optimizeCompareInstr - Convert the instruction supplying the argument to the comparison into one that sets the zero bit in the flags register; Remove a redundant Compare instruction if an earlier instruction can set the flags in the same way as Compare.

E.g. SUBrr(r1,r2) and CMPrr(r1,r2). We also handle the case where two operands are swapped: SUBrr(r1,r2) and CMPrr(r2,r1), by updating the condition code of instructions which use the flags.

Definition at line 3014 of file ARMBaseInstrInfo.cpp.

References llvm::ARMCC::AL, assert(), B, llvm::MachineBasicBlock::begin(), CC, llvm::MachineOperand::clobbersPhysReg(), llvm::MachineBasicBlock::end(), llvm::ARMCC::EQ, llvm::MachineInstr::eraseFromParent(), llvm::ARMCC::GE, getCmpToAddCondition(), llvm::MachineInstr::getOpcode(), llvm::MachineInstr::getOperand(), llvm::MachineInstr::getParent(), llvm::MachineOperand::getReg(), getRegisterInfo(), getSwappedCondition(), llvm::ARMCC::GT, llvm::ARMCC::HI, llvm::ARMCC::HS, I, llvm::MachineBasicBlock::insert(), llvm::MachineOperand::isDef(), isOptimizeCompareCandidate(), isPredicated(), isRedundantFlagInstr(), llvm::MachineOperand::isReg(), llvm::MachineOperand::isRegMask(), isSuitableForMask(), llvm::ARMCC::LE, llvm::ARMCC::LO, llvm::ARMCC::LS, llvm::ARMCC::LT, MBB, MI, llvm::ARMCC::MI, MRI, llvm::ARMCC::NE, llvm::ARMCC::PL, llvm::SmallVectorTemplateBase< T, bool >::push_back(), llvm::SmallVectorBase< Size_T >::size(), llvm::MachineBasicBlock::successors(), TRI, llvm::ARMCC::VC, and llvm::ARMCC::VS.

◆ optimizeSelect()

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

Definition at line 2341 of file ARMBaseInstrInfo.cpp.

References llvm::MachineInstrBuilder::add(), llvm::MachineInstrBuilder::addImm(), assert(), llvm::BuildMI(), llvm::MachineInstr::clearKillInfo(), llvm::condCodeOp(), DefMI, llvm::SmallPtrSetImpl< PtrType >::erase(), llvm::MachineInstr::eraseFromParent(), llvm::MachineInstr::getDesc(), llvm::MachineInstr::getNumOperands(), llvm::MCInstrDesc::getNumOperands(), llvm::MachineInstr::getOperand(), llvm::ARMCC::getOppositeCondition(), llvm::MachineInstr::getParent(), llvm::MachineOperand::getReg(), llvm::MachineInstr::hasOptionalDef(), llvm::SmallPtrSetImpl< PtrType >::insert(), MI, MRI, llvm::MCInstrDesc::operands(), llvm::MachineOperand::setImplicit(), and llvm::MachineInstr::tieOperands().

Referenced by llvm::Thumb2InstrInfo::optimizeSelect().

◆ PredicateInstruction()

bool ARMBaseInstrInfo::PredicateInstruction ( MachineInstr &  MI,
ArrayRef< MachineOperand >  Pred 
) const
override

Definition at line 602 of file ARMBaseInstrInfo.cpp.

References llvm::MachineInstrBuilder::addImm(), llvm::MachineInstrBuilder::addReg(), assert(), llvm::get(), llvm::getMatchingCondBranchOpcode(), getReg(), llvm::isUncondBranchOpcode(), MI, llvm::MCInstrDesc::operands(), llvm::MachineOperand::setImm(), llvm::ARMII::ThumbArithFlagSetting, and llvm::MCInstrDesc::TSFlags.

◆ predictBranchSizeForIfCvt()

unsigned ARMBaseInstrInfo::predictBranchSizeForIfCvt ( MachineInstr &  MI) const
override

Definition at line 2200 of file ARMBaseInstrInfo.cpp.

References llvm::findCMPToFoldIntoCBZ(), getInstSizeInBytes(), getRegisterInfo(), llvm::ARMSubtarget::isThumb2(), MI, and Size.

◆ produceSameValue()

bool ARMBaseInstrInfo::produceSameValue ( const MachineInstr &  MI0,
const MachineInstr &  MI1,
const MachineRegisterInfo *  MRI 
) const
override

Definition at line 1861 of file ARMBaseInstrInfo.cpp.

References llvm::MachineConstantPoolEntry::ConstVal, llvm::MachineFunction::getConstantPool(), llvm::MachineConstantPool::getConstants(), llvm::MachineOperand::getGlobal(), llvm::MachineOperand::getIndex(), llvm::MachineInstr::getNumOperands(), llvm::MachineOperand::getOffset(), llvm::MachineInstr::getOpcode(), llvm::MachineInstr::getOperand(), llvm::MachineBasicBlock::getParent(), llvm::MachineInstr::getParent(), llvm::MachineOperand::getReg(), llvm::ARMConstantPoolValue::hasSameValue(), llvm::MachineInstr::IgnoreVRegDefs, llvm::MachineInstr::isIdenticalTo(), llvm::MachineOperand::isIdenticalTo(), llvm::MachineConstantPoolEntry::isMachineConstantPoolEntry(), llvm::Register::isVirtual(), llvm::MachineConstantPoolEntry::MachineCPVal, MRI, produceSameValue(), and llvm::MachineConstantPoolEntry::Val.

Referenced by produceSameValue().

◆ reMaterialize()

void ARMBaseInstrInfo::reMaterialize ( MachineBasicBlock &  MBB,
MachineBasicBlock::iterator  MI,
Register  DestReg,
unsigned  SubIdx,
const MachineInstr &  Orig,
const TargetRegisterInfo &  TRI 
) const
override

Definition at line 1809 of file ARMBaseInstrInfo.cpp.

References llvm::MachineInstrBuilder::addConstantPoolIndex(), llvm::MachineInstrBuilder::addImm(), llvm::BuildMI(), llvm::MachineFunction::CloneMachineInstr(), llvm::MachineInstrBuilder::cloneMemRefs(), duplicateCPV(), llvm::get(), llvm::MachineInstr::getDebugLoc(), llvm::MachineOperand::getIndex(), llvm::MachineInstr::getOpcode(), llvm::MachineInstr::getOperand(), llvm::MachineBasicBlock::getParent(), llvm::MachineOperand::getReg(), I, llvm::MachineBasicBlock::insert(), MBB, MI, and TRI.

◆ removeBranch()

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

Definition at line 472 of file ARMBaseInstrInfo.cpp.

References assert(), llvm::MachineBasicBlock::begin(), llvm::MachineBasicBlock::end(), llvm::MachineBasicBlock::getLastNonDebugInstr(), I, llvm::isCondBranchOpcode(), llvm::isUncondBranchOpcode(), and MBB.

Referenced by analyzeBranch().

◆ reverseBranchCondition()

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

Definition at line 551 of file ARMBaseInstrInfo.cpp.

References CC, Cond, and llvm::ARMCC::getOppositeCondition().

◆ setExecutionDomain()

void ARMBaseInstrInfo::setExecutionDomain ( MachineInstr &  MI,
unsigned  Domain 
) const
override

Definition at line 5132 of file ARMBaseInstrInfo.cpp.

References llvm::MachineInstrBuilder::add(), llvm::MachineInstrBuilder::addImm(), llvm::MachineInstrBuilder::addReg(), llvm::ARMCC::AL, assert(), llvm::BuildMI(), llvm::RegState::Define, ExeNEON, llvm::get(), getCorrespondingDRegAndLane(), getImplicitSPRUseForDPRUse(), getRegisterInfo(), llvm::getUndefRegState(), llvm::RegState::Implicit, isPredicated(), llvm_unreachable, MI, llvm::predOps(), TRI, and llvm::RegState::Undef.

◆ shouldOutlineFromFunctionByDefault()

bool ARMBaseInstrInfo::shouldOutlineFromFunctionByDefault ( MachineFunction &  MF) const
override

Enable outlining by default at -Oz.

Definition at line 6723 of file ARMBaseInstrInfo.cpp.

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

◆ shouldScheduleLoadsNear()

bool ARMBaseInstrInfo::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.

On some targets if two loads are loading from addresses in the same cache line, it's better if they are scheduled together. This function takes two integers that represent the load offsets from the common base address. It returns true if it decides it's desirable to schedule the two loads together. "NumLoads" is the number of loads that have already been scheduled after Load1.

On some targets if two loads are loading from addresses in the same cache line, it's better if they are scheduled together. This function takes two integers that represent the load offsets from the common base address. It returns true if it decides it's desirable to schedule the two loads together. "NumLoads" is the number of loads that have already been scheduled after Load1.

FIXME: remove this in favor of the MachineInstr interface once pre-RA-sched is permanently disabled.

Definition at line 2015 of file ARMBaseInstrInfo.cpp.

References assert(), llvm::SDNode::getMachineOpcode(), and llvm::ARMSubtarget::isThumb1Only().

◆ shouldSink()

bool ARMBaseInstrInfo::shouldSink ( const MachineInstr &  MI) const
override

Definition at line 3294 of file ARMBaseInstrInfo.cpp.

References analyzeCompare(), isPredicated(), isRedundantFlagInstr(), and MI.

◆ storeRegToStackSlot()

void ARMBaseInstrInfo::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 1116 of file ARMBaseInstrInfo.cpp.

References llvm::MachineInstrBuilder::add(), AddDReg(), llvm::MachineInstrBuilder::addFrameIndex(), llvm::MachineInstrBuilder::addImm(), llvm::MachineInstrBuilder::addMemOperand(), llvm::MachineInstrBuilder::addReg(), llvm::addUnpredicatedMveVpredNOp(), llvm::ARMCC::AL, llvm::BuildMI(), llvm::get(), llvm::MachinePointerInfo::getFixedStack(), llvm::MachineFunction::getFrameInfo(), llvm::getKillRegState(), llvm::MachineFunction::getMachineMemOperand(), llvm::MachineFrameInfo::getObjectAlign(), llvm::MachineFrameInfo::getObjectSize(), llvm::MachineBasicBlock::getParent(), getRegisterInfo(), I, llvm_unreachable, MBB, llvm::MachineMemOperand::MOStore, llvm::predOps(), and TRI.

Referenced by llvm::Thumb2InstrInfo::storeRegToStackSlot().

◆ SubsumesPredicate()

bool ARMBaseInstrInfo::SubsumesPredicate ( ArrayRef< MachineOperand >  Pred1,
ArrayRef< MachineOperand >  Pred2 
) const
override

Definition at line 636 of file ARMBaseInstrInfo.cpp.

References llvm::ARMCC::AL, llvm::ARMCC::EQ, llvm::ARMCC::GE, llvm::ARMCC::GT, llvm::ARMCC::HI, llvm::ARMCC::HS, llvm::ARMCC::LE, llvm::ARMCC::LO, llvm::ARMCC::LS, llvm::ARMCC::LT, and llvm::ArrayRef< T >::size().

The documentation for this class was generated from the following files:
Generated on Mon Oct 14 2024 20:32:46 for LLVM by doxygen 1.9.6