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llvm::GIMatchTableExecutor Class Referenceabstract

Provides the logic to execute GlobalISel match tables, which are used by the instruction selector and instruction combiners as their engine to match and apply MIR patterns. More...

#include "llvm/CodeGen/GlobalISel/GIMatchTableExecutor.h"

Inheritance diagram for llvm::GIMatchTableExecutor:
[legend]

Classes

struct  ExecInfoTy
struct  MatcherState

Public Member Functions

virtual ~GIMatchTableExecutor ()=default
virtual void setupGeneratedPerFunctionState (MachineFunction &MF)=0
virtual void setupMF (MachineFunction &mf, GISelValueTracking *vt, CodeGenCoverage *covinfo=nullptr, ProfileSummaryInfo *psi=nullptr, BlockFrequencyInfo *bfi=nullptr)
 Setup per-MF executor state.

Static Public Member Functions

static LLVM_ATTRIBUTE_ALWAYS_INLINE uint64_t fastDecodeULEB128 (const uint8_t *LLVM_ATTRIBUTE_RESTRICT MatchTable, uint64_t &CurrentIdx)

Public Attributes

CodeGenCoverage * CoverageInfo = nullptr
GISelValueTracking * VT = nullptr
MachineFunction * MF = nullptr
ProfileSummaryInfo * PSI = nullptr
BlockFrequencyInfo * BFI = nullptr
MachineBasicBlock * CurMBB = nullptr
unsigned HwMode = 0

Protected Types

using ComplexRendererFns
using RecordedMIVector = SmallVector<MachineInstr *, 4>
using NewMIVector = SmallVector<MachineInstrBuilder, 4>

Protected Member Functions

bool shouldOptForSize (const MachineFunction *MF) const
LLVM_ABI GIMatchTableExecutor ()
template<class TgtExecutor, class PredicateBitset, class ComplexMatcherMemFn, class CustomRendererFn>
bool executeMatchTable (TgtExecutor &Exec, MatcherState &State, const ExecInfoTy< PredicateBitset, ComplexMatcherMemFn, CustomRendererFn > &ExecInfo, MachineIRBuilder &Builder, const uint8_t *MatchTable, const TargetInstrInfo &TII, MachineRegisterInfo &MRI, const TargetRegisterInfo &TRI, const RegisterBankInfo &RBI, const PredicateBitset &AvailableFeatures, CodeGenCoverage *CoverageInfo) const
 Execute a given matcher table and return true if the match was successful and false otherwise.
virtual const uint8_t * getMatchTable () const
virtual LLT getLLTForHwMode (unsigned Index) const
virtual bool testImmPredicate_I64 (unsigned, int64_t) const
virtual bool testImmPredicate_APInt (unsigned, const APInt &) const
virtual bool testImmPredicate_APFloat (unsigned, const APFloat &) const
virtual bool testMIPredicate_MI (unsigned, const MachineInstr &, const MatcherState &State) const
virtual bool testMOPredicate_MO (unsigned, const MachineOperand &, const MatcherState &State) const
virtual bool testSimplePredicate (unsigned) const
virtual bool runCustomAction (unsigned, const MatcherState &State, NewMIVector &OutMIs) const
virtual uint32_t getRootFlagsToDrop () const
LLVM_ABI bool isOperandImmEqual (const MachineOperand &MO, int64_t Value, const MachineRegisterInfo &MRI, bool Splat=false) const
LLVM_ABI bool isBaseWithConstantOffset (const MachineOperand &Root, const MachineRegisterInfo &MRI) const
 Return true if the specified operand is a G_PTR_ADD with a G_CONSTANT on the right-hand side.
LLVM_ABI bool isObviouslySafeToFold (MachineInstr &MI, MachineInstr &IntoMI) const
 Return true if MI can obviously be folded into IntoMI.

Static Protected Member Functions

template<typename Ty>
static Ty readBytesAs (const uint8_t *MatchTable)
static ArrayRef< MachineOperand > getRemainingOperands (const MachineInstr &MI, unsigned FirstVarOp)

Detailed Description

Provides the logic to execute GlobalISel match tables, which are used by the instruction selector and instruction combiners as their engine to match and apply MIR patterns.

Definition at line 638 of file GIMatchTableExecutor.h.

Member Typedef Documentation

◆ ComplexRendererFns

using llvm::GIMatchTableExecutor::ComplexRendererFns
protected
Initial value:
std::optional<SmallVector<std::function<void(MachineInstrBuilder &)>, 4>>
llvm::SmallVector
This is a 'vector' (really, a variable-sized array), optimized for the case when the array is small.
Definition SmallVector.h:1261

Definition at line 671 of file GIMatchTableExecutor.h.

◆ NewMIVector

using llvm::GIMatchTableExecutor::NewMIVector = SmallVector<MachineInstrBuilder, 4>
protected

Definition at line 674 of file GIMatchTableExecutor.h.

◆ RecordedMIVector

using llvm::GIMatchTableExecutor::RecordedMIVector = SmallVector<MachineInstr *, 4>
protected

Definition at line 673 of file GIMatchTableExecutor.h.

Constructor & Destructor Documentation

◆ ~GIMatchTableExecutor()

virtual llvm::GIMatchTableExecutor::~GIMatchTableExecutor ( )
virtualdefault

◆ GIMatchTableExecutor()

GIMatchTableExecutor::GIMatchTableExecutor ( )
protecteddefault

References CoverageInfo, LLVM_ABI, MRI, TII, and TRI.

Member Function Documentation

◆ executeMatchTable()

template<class TgtExecutor, class PredicateBitset, class ComplexMatcherMemFn, class CustomRendererFn>
bool llvm::GIMatchTableExecutor::executeMatchTable ( TgtExecutor & Exec,
MatcherState & State,
const ExecInfoTy< PredicateBitset, ComplexMatcherMemFn, CustomRendererFn > & ExecInfo,
MachineIRBuilder & Builder,
const uint8_t * MatchTable,
const TargetInstrInfo & TII,
MachineRegisterInfo & MRI,
const TargetRegisterInfo & TRI,
const RegisterBankInfo & RBI,
const PredicateBitset & AvailableFeatures,
CodeGenCoverage * CoverageInfo ) const
protected

Execute a given matcher table and return true if the match was successful and false otherwise.

Definition at line 44 of file GIMatchTableExecutorImpl.h.

References AbstractManglingParser< Derived, Alloc >::NumOps, llvm::MachineInstrBuilder::add(), assert(), llvm::canReplaceReg(), llvm::GISelChangeObserver::changedInstr(), llvm::GISelChangeObserver::changingAllUsesOfReg(), llvm::GISelChangeObserver::changingInstr(), llvm::GIMatchTableExecutor::ExecInfoTy< PredicateBitset, ComplexMatcherMemFn, CustomRendererFn >::ComplexPredicates, llvm::constrainOperandRegClass(), llvm::constrainSelectedInstRegOperands(), CoverageInfo, llvm::GIMatchTableExecutor::ExecInfoTy< PredicateBitset, ComplexMatcherMemFn, CustomRendererFn >::CustomRenderers, llvm::dbgs(), DEBUG_WITH_TYPE, llvm::Default, llvm::drop_begin(), E(), llvm::SmallVectorTemplateCommon< T, typename >::empty(), llvm::DenseMapBase< StorageT, KeyT, ValueT, KeyInfoT, BucketT >::end(), llvm::ConstantInt::equalsInt(), llvm::GISelChangeObserver::erasingInstr(), fastDecodeULEB128(), llvm::GIMatchTableExecutor::ExecInfoTy< PredicateBitset, ComplexMatcherMemFn, CustomRendererFn >::FeatureBitsets, llvm::DenseMapBase< StorageT, KeyT, ValueT, KeyInfoT, BucketT >::find(), llvm::GISelChangeObserver::finishedChangingAllUsesOfReg(), llvm::IntegerType::get(), llvm::MachineMemOperand::getAddrSpace(), llvm::MachineMemOperand::getAlign(), llvm::MachineOperand::getCImm(), llvm::getDefIgnoringCopies(), getFlags(), llvm::getFltSemanticForLLT(), llvm::MachineOperand::getImm(), llvm::MachineInstrBuilder::getInstr(), llvm::MachineOperand::getIntrinsicID(), getLLTForHwMode(), llvm::MachineInstr::getMF(), llvm::MachineOperand::getPredicate(), llvm::MachineOperand::getReg(), llvm::RegisterBankInfo::getRegBank(), llvm::RegisterBankInfo::getRegBankFromRegClass(), getRootFlagsToDrop(), llvm::MachineMemOperand::getSize(), llvm::LLT::getSizeInBits(), llvm::MachineMemOperand::getSizeInBits(), llvm::getSrcRegIgnoringCopies(), llvm::LocationSize::getValue(), llvm::GICXXCustomAction_Invalid, llvm::GICXXPred_Invalid, llvm::GIM_CheckAPFloatImmPredicate, llvm::GIM_CheckAPIntImmPredicate, llvm::GIM_CheckAtomicOrdering, llvm::GIM_CheckAtomicOrderingOrStrongerThan, llvm::GIM_CheckAtomicOrderingWeakerThan, llvm::GIM_CheckCanReplaceReg, llvm::GIM_CheckCmpPredicate, llvm::GIM_CheckComplexPattern, llvm::GIM_CheckConstantInt, llvm::GIM_CheckConstantInt8, llvm::GIM_CheckCxxInsnPredicate, llvm::GIM_CheckHasNoUse, llvm::GIM_CheckHasOneUse, llvm::GIM_CheckI64ImmPredicate, llvm::GIM_CheckImmOperandPredicate, llvm::GIM_CheckIntrinsicID, llvm::GIM_CheckIsBuildVectorAllOnes, llvm::GIM_CheckIsBuildVectorAllZeros, llvm::GIM_CheckIsImm, llvm::GIM_CheckIsMBB, llvm::GIM_CheckIsSafeToFold, llvm::GIM_CheckIsSameOperand, llvm::GIM_CheckIsSameOperandIgnoreCopies, llvm::GIM_CheckLeafOperandPredicate, llvm::GIM_CheckLiteralInt, llvm::GIM_CheckMemoryAddressSpace, llvm::GIM_CheckMemoryAlignment, llvm::GIM_CheckMemorySizeEqualTo, llvm::GIM_CheckMemorySizeEqualToLLT, llvm::GIM_CheckMemorySizeGreaterThanLLT, llvm::GIM_CheckMemorySizeLessThanLLT, llvm::GIM_CheckNumOperands, llvm::GIM_CheckNumOperandsGE, llvm::GIM_CheckNumOperandsLE, llvm::GIM_CheckOpcode, llvm::GIM_CheckOpcodeIsEither, llvm::GIM_CheckPointerToAny, llvm::GIM_CheckPointerToAnyByHwMode, llvm::GIM_CheckRegBankForClass, llvm::GIM_CheckSimplePredicate, llvm::GIM_CheckType, llvm::GIM_CheckTypeByHwMode, llvm::GIM_MIFlags, llvm::GIM_MIFlagsNot, llvm::GIM_RecordInsn, llvm::GIM_RecordInsnIgnoreCopies, llvm::GIM_RecordNamedOperand, llvm::GIM_RecordRegType, llvm::GIM_Reject, llvm::GIM_RootCheckRegBankForClass, llvm::GIM_RootCheckType, llvm::GIM_RootCheckTypeByHwMode, llvm::GIM_SwitchOpcode, llvm::GIM_SwitchType, llvm::GIM_SwitchTypeShape, llvm::GIM_Try, llvm::GIM_Try_CheckFeatures, llvm::GIR_AddCFPImm, llvm::GIR_AddCImm, llvm::GIR_AddImm, llvm::GIR_AddImm8, llvm::GIR_AddImplicitDef, llvm::GIR_AddImplicitUse, llvm::GIR_AddIntrinsicID, llvm::GIR_AddRegister, llvm::GIR_AddSimpleTempRegister, llvm::GIR_AddTempRegister, llvm::GIR_AddTempSubRegister, llvm::GIR_BuildConstant, llvm::GIR_BuildMI, llvm::GIR_BuildRootMI, llvm::GIR_ComplexRenderer, llvm::GIR_ComplexSubOperandRenderer, llvm::GIR_ComplexSubOperandSubRegRenderer, llvm::GIR_ConstrainOperandRC, llvm::GIR_ConstrainSelectedInstOperands, llvm::GIR_Copy, llvm::GIR_CopyConstantAsSImm, llvm::GIR_CopyFConstantAsFPImm, llvm::GIR_CopyMIFlags, llvm::GIR_CopyOrAddZeroReg, llvm::GIR_CopyRemaining, llvm::GIR_CopySubReg, llvm::GIR_Coverage, llvm::GIR_CustomOperandRenderer, llvm::GIR_CustomRenderer, llvm::GIR_Done, llvm::GIR_DoneWithCustomAction, llvm::GIR_EraseFromParent, llvm::GIR_EraseRootFromParent_Done, llvm::GIR_MakeTempReg, llvm::GIR_MakeTempRegByHwMode, llvm::GIR_MergeMemOperands, llvm::GIR_MutateOpcode, llvm::GIR_ReplaceReg, llvm::GIR_ReplaceRegWithTempReg, llvm::GIR_RootConstrainSelectedInstOperands, llvm::GIR_RootToRootCopy, llvm::GIR_SetImplicitDefDead, llvm::GIR_SetMIFlags, llvm::GIR_UnsetMIFlags, I, Imm, llvm::Implicit, llvm::isAtLeastOrStrongerThan(), llvm::isBuildVectorAllOnes(), llvm::isBuildVectorAllZeros(), llvm::MachineOperand::isCImm(), llvm::MachineOperand::isImm(), llvm::MachineOperand::isIntrinsicID(), llvm::details::FixedOrScalableQuantity< TypeSize, uint64_t >::isKnownGE(), llvm::details::FixedOrScalableQuantity< TypeSize, uint64_t >::isKnownLE(), isObviouslySafeToFold(), isOperandImmEqual(), llvm::Register::isPhysical(), llvm::MachineOperand::isPredicate(), llvm::MachineOperand::isReg(), llvm::isStrongerThan(), llvm_unreachable, llvm::MachineInstr::mayRaiseFPException(), MF, MI, llvm::MinAlign(), MRI, llvm::MachineInstr::NoFPExcept, llvm::MachineInstr::operands(), llvm::SmallVectorImpl< T >::pop_back_val(), llvm::SmallVectorTemplateBase< T, bool >::push_back(), readBytesAs(), llvm::SmallVectorImpl< T >::resize(), runCustomAction(), llvm::LLT::scalar(), llvm::MachineInstrBuilder::setMIFlags(), llvm::SignExtend64(), llvm::Size, llvm::SmallVectorTemplateCommon< T, typename >::size(), llvm::Success, testImmPredicate_APFloat(), testImmPredicate_APInt(), testImmPredicate_I64(), testMIPredicate_MI(), testMOPredicate_MO(), testSimplePredicate(), TII, TRI, llvm::GIMatchTableExecutor::ExecInfoTy< PredicateBitset, ComplexMatcherMemFn, CustomRendererFn >::TypeIDMap, llvm::GIMatchTableExecutor::ExecInfoTy< PredicateBitset, ComplexMatcherMemFn, CustomRendererFn >::TypeObjects, uint64_t, and V.

◆ fastDecodeULEB128()

LLVM_ATTRIBUTE_ALWAYS_INLINE uint64_t llvm::GIMatchTableExecutor::fastDecodeULEB128 ( const uint8_t *LLVM_ATTRIBUTE_RESTRICT MatchTable,
uint64_t & CurrentIdx )
inlinestatic

Definition at line 821 of file GIMatchTableExecutor.h.

References LLVM_ATTRIBUTE_RESTRICT, LLVM_UNLIKELY, and uint64_t.

Referenced by executeMatchTable().

◆ getLLTForHwMode()

virtual LLT llvm::GIMatchTableExecutor::getLLTForHwMode ( unsigned Index) const
inlineprotectedvirtual

Definition at line 747 of file GIMatchTableExecutor.h.

References llvm_unreachable.

Referenced by executeMatchTable().

◆ getMatchTable()

virtual const uint8_t * llvm::GIMatchTableExecutor::getMatchTable ( ) const
inlineprotectedvirtual

Definition at line 743 of file GIMatchTableExecutor.h.

References llvm_unreachable.

◆ getRemainingOperands()

ArrayRef< MachineOperand > llvm::GIMatchTableExecutor::getRemainingOperands ( const MachineInstr & MI,
unsigned FirstVarOp )
inlinestaticprotected

Definition at line 808 of file GIMatchTableExecutor.h.

References llvm::drop_begin(), MI, and Operands.

◆ getRootFlagsToDrop()

virtual uint32_t llvm::GIMatchTableExecutor::getRootFlagsToDrop ( ) const
inlineprotectedvirtual

Definition at line 784 of file GIMatchTableExecutor.h.

Referenced by executeMatchTable().

◆ isBaseWithConstantOffset()

bool GIMatchTableExecutor::isBaseWithConstantOffset ( const MachineOperand & Root,
const MachineRegisterInfo & MRI ) const
protected

Return true if the specified operand is a G_PTR_ADD with a G_CONSTANT on the right-hand side.

GlobalISel's separation of pointer and integer types means that we don't need to worry about G_OR with equivalent semantics.

Definition at line 47 of file GIMatchTableExecutor.cpp.

References llvm::MachineOperand::getReg(), llvm::MachineOperand::isReg(), llvm::MIPatternMatch::m_GConstant(), llvm::MIPatternMatch::m_GPtrAdd(), llvm::MIPatternMatch::m_Reg(), llvm::MIPatternMatch::mi_match(), and MRI.

◆ isObviouslySafeToFold()

bool GIMatchTableExecutor::isObviouslySafeToFold ( MachineInstr & MI,
MachineInstr & IntoMI ) const
protected

Return true if MI can obviously be folded into IntoMI.

MI and IntoMI do not need to be in the same basic blocks, but MI must preceed IntoMI.

Definition at line 56 of file GIMatchTableExecutor.cpp.

References llvm::ilist_node_impl< OptionsT >::getIterator(), llvm::MachineInstr::getParent(), llvm::instructionsWithoutDebug(), and MI.

Referenced by executeMatchTable().

◆ isOperandImmEqual()

bool GIMatchTableExecutor::isOperandImmEqual ( const MachineOperand & MO,
int64_t Value,
const MachineRegisterInfo & MRI,
bool Splat = false ) const
protected

Definition at line 31 of file GIMatchTableExecutor.cpp.

References llvm::getIConstantSplatVal(), llvm::getIConstantVRegValWithLookThrough(), llvm::MachineOperand::getReg(), llvm::MachineOperand::isReg(), MRI, and llvm::Splat.

Referenced by executeMatchTable().

◆ readBytesAs()

template<typename Ty>
Ty llvm::GIMatchTableExecutor::readBytesAs ( const uint8_t * MatchTable)
inlinestaticprotected

Definition at line 802 of file GIMatchTableExecutor.h.

Referenced by executeMatchTable().

◆ runCustomAction()

virtual bool llvm::GIMatchTableExecutor::runCustomAction ( unsigned ,
const MatcherState & State,
NewMIVector & OutMIs ) const
inlineprotectedvirtual

Definition at line 779 of file GIMatchTableExecutor.h.

References llvm_unreachable.

Referenced by executeMatchTable().

◆ setupGeneratedPerFunctionState()

virtual void llvm::GIMatchTableExecutor::setupGeneratedPerFunctionState ( MachineFunction & MF)
pure virtual

References MF.

Referenced by setupMF().

◆ setupMF()

virtual void llvm::GIMatchTableExecutor::setupMF ( MachineFunction & mf,
GISelValueTracking * vt,
CodeGenCoverage * covinfo = nullptr,
ProfileSummaryInfo * psi = nullptr,
BlockFrequencyInfo * bfi = nullptr )
inlinevirtual

Setup per-MF executor state.

Reimplemented in llvm::AMDGPUInstructionSelector.

Definition at line 656 of file GIMatchTableExecutor.h.

References BFI, CoverageInfo, CurMBB, llvm::MCSubtargetInfo::getHwMode(), llvm::MachineFunction::getSubtarget(), HwMode, MF, PSI, setupGeneratedPerFunctionState(), and VT.

Referenced by llvm::Combiner::combineMachineInstrs(), and llvm::AMDGPUInstructionSelector::setupMF().

◆ shouldOptForSize()

bool llvm::GIMatchTableExecutor::shouldOptForSize ( const MachineFunction * MF) const
inlineprotected

Definition at line 693 of file GIMatchTableExecutor.h.

References BFI, CurMBB, F, MF, PSI, and llvm::shouldOptimizeForSize().

◆ testImmPredicate_APFloat()

virtual bool llvm::GIMatchTableExecutor::testImmPredicate_APFloat ( unsigned ,
const APFloat &  ) const
inlineprotectedvirtual

Definition at line 759 of file GIMatchTableExecutor.h.

References llvm_unreachable.

Referenced by executeMatchTable().

◆ testImmPredicate_APInt()

virtual bool llvm::GIMatchTableExecutor::testImmPredicate_APInt ( unsigned ,
const APInt &  ) const
inlineprotectedvirtual

Definition at line 755 of file GIMatchTableExecutor.h.

References llvm_unreachable.

Referenced by executeMatchTable().

◆ testImmPredicate_I64()

virtual bool llvm::GIMatchTableExecutor::testImmPredicate_I64 ( unsigned ,
int64_t  ) const
inlineprotectedvirtual

Definition at line 751 of file GIMatchTableExecutor.h.

References llvm_unreachable.

Referenced by executeMatchTable().

◆ testMIPredicate_MI()

virtual bool llvm::GIMatchTableExecutor::testMIPredicate_MI ( unsigned ,
const MachineInstr & ,
const MatcherState & State ) const
inlineprotectedvirtual

Definition at line 763 of file GIMatchTableExecutor.h.

References llvm_unreachable.

Referenced by executeMatchTable().

◆ testMOPredicate_MO()

virtual bool llvm::GIMatchTableExecutor::testMOPredicate_MO ( unsigned ,
const MachineOperand & ,
const MatcherState & State ) const
inlineprotectedvirtual

Definition at line 769 of file GIMatchTableExecutor.h.

References llvm_unreachable.

Referenced by executeMatchTable().

◆ testSimplePredicate()

virtual bool llvm::GIMatchTableExecutor::testSimplePredicate ( unsigned ) const
inlineprotectedvirtual

Definition at line 775 of file GIMatchTableExecutor.h.

References llvm_unreachable.

Referenced by executeMatchTable().

Member Data Documentation

◆ BFI

BlockFrequencyInfo* llvm::GIMatchTableExecutor::BFI = nullptr

Definition at line 646 of file GIMatchTableExecutor.h.

Referenced by llvm::AMDGPUInstructionSelector::getName(), llvm::AMDGPUInstructionSelector::setupMF(), setupMF(), and shouldOptForSize().

◆ CoverageInfo

CodeGenCoverage* llvm::GIMatchTableExecutor::CoverageInfo = nullptr

Definition at line 642 of file GIMatchTableExecutor.h.

Referenced by executeMatchTable(), llvm::AMDGPUInstructionSelector::getName(), GIMatchTableExecutor(), llvm::AMDGPUInstructionSelector::select(), llvm::AMDGPUInstructionSelector::setupMF(), and setupMF().

◆ CurMBB

MachineBasicBlock* llvm::GIMatchTableExecutor::CurMBB = nullptr

Definition at line 648 of file GIMatchTableExecutor.h.

Referenced by setupMF(), and shouldOptForSize().

◆ HwMode

unsigned llvm::GIMatchTableExecutor::HwMode = 0

Definition at line 651 of file GIMatchTableExecutor.h.

Referenced by setupMF().

◆ MF

MachineFunction* llvm::GIMatchTableExecutor::MF = nullptr

Definition at line 644 of file GIMatchTableExecutor.h.

Referenced by executeMatchTable(), llvm::AMDGPUInstructionSelector::getName(), setupGeneratedPerFunctionState(), llvm::AMDGPUInstructionSelector::setupMF(), setupMF(), and shouldOptForSize().

◆ PSI

ProfileSummaryInfo* llvm::GIMatchTableExecutor::PSI = nullptr

Definition at line 645 of file GIMatchTableExecutor.h.

Referenced by llvm::AMDGPUInstructionSelector::getName(), llvm::AMDGPUInstructionSelector::setupMF(), setupMF(), and shouldOptForSize().

◆ VT

GISelValueTracking* llvm::GIMatchTableExecutor::VT = nullptr

Definition at line 643 of file GIMatchTableExecutor.h.

Referenced by llvm::AMDGPUInstructionSelector::getName(), llvm::AMDGPUInstructionSelector::setupMF(), and setupMF().

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