LLVM 17.0.0git
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Provides the logic to select generic machine instructions. More...
#include "llvm/CodeGen/GlobalISel/InstructionSelector.h"
Classes | |
struct | ISelInfoTy |
struct | MatcherState |
Public Member Functions | |
virtual | ~InstructionSelector ()=default |
virtual bool | select (MachineInstr &I)=0 |
Select the (possibly generic) instruction I to only use target-specific opcodes. | |
virtual void | setupGeneratedPerFunctionState (MachineFunction &MF) |
virtual void | setupMF (MachineFunction &mf, GISelKnownBits *KB, CodeGenCoverage &covinfo, ProfileSummaryInfo *psi, BlockFrequencyInfo *bfi) |
Setup per-MF selector state. | |
Public Attributes | |
CodeGenCoverage * | CoverageInfo = nullptr |
GISelKnownBits * | KnownBits = nullptr |
MachineFunction * | MF = nullptr |
ProfileSummaryInfo * | PSI = nullptr |
BlockFrequencyInfo * | BFI = nullptr |
MachineBasicBlock * | CurMBB = nullptr |
Protected Types | |
using | ComplexRendererFns = std::optional< SmallVector< std::function< void(MachineInstrBuilder &)>, 4 > > |
using | RecordedMIVector = SmallVector< MachineInstr *, 4 > |
using | NewMIVector = SmallVector< MachineInstrBuilder, 4 > |
Protected Member Functions | |
bool | shouldOptForSize (const MachineFunction *MF) const |
InstructionSelector () | |
template<class TgtInstructionSelector , class PredicateBitset , class ComplexMatcherMemFn , class CustomRendererFn > | |
bool | executeMatchTable (TgtInstructionSelector &ISel, NewMIVector &OutMIs, MatcherState &State, const ISelInfoTy< PredicateBitset, ComplexMatcherMemFn, CustomRendererFn > &ISelInfo, const int64_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 int64_t * | getMatchTable () 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 std::array< const MachineOperand *, 3 > &Operands) const |
bool | isOperandImmEqual (const MachineOperand &MO, int64_t Value, const MachineRegisterInfo &MRI) const |
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. | |
bool | isObviouslySafeToFold (MachineInstr &MI, MachineInstr &IntoMI) const |
Return true if MI can obviously be folded into IntoMI. | |
Provides the logic to select generic machine instructions.
Definition at line 428 of file InstructionSelector.h.
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Definition at line 470 of file InstructionSelector.h.
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Definition at line 473 of file InstructionSelector.h.
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Definition at line 472 of file InstructionSelector.h.
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protecteddefault |
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Execute a given matcher table and return true if the match was successful and false otherwise.
Definition at line 50 of file InstructionSelectorImpl.h.
References assert(), llvm::BuildMI(), llvm::InstructionSelector::ISelInfoTy< PredicateBitset, ComplexMatcherMemFn, CustomRendererFn >::ComplexPredicates, llvm::constrainOperandRegClass(), llvm::constrainSelectedInstRegOperands(), CoverageInfo, llvm::InstructionSelector::ISelInfoTy< PredicateBitset, ComplexMatcherMemFn, CustomRendererFn >::CustomRenderers, llvm::dbgs(), DEBUG_WITH_TYPE, llvm::Default, llvm::SmallVectorBase< Size_T >::empty(), llvm::ConstantInt::equalsInt(), llvm::InstructionSelector::ISelInfoTy< PredicateBitset, ComplexMatcherMemFn, CustomRendererFn >::FeatureBitsets, llvm::LLT::getAddressSpace(), llvm::MachineMemOperand::getAddrSpace(), llvm::MachineMemOperand::getAlign(), llvm::MachineOperand::getCImm(), llvm::MachineFunction::getDataLayout(), llvm::MachineOperand::getImm(), llvm::MachineOperand::getIntrinsicID(), llvm::DataLayout::getPointerSizeInBits(), llvm::MachineOperand::getPredicate(), llvm::MachineOperand::getReg(), llvm::RegisterBankInfo::getRegBank(), llvm::RegisterBankInfo::getRegBankFromRegClass(), llvm::MachineFunction::getRegInfo(), llvm::MachineMemOperand::getSize(), llvm::MachineMemOperand::getSizeInBits(), llvm::LLT::getSizeInBits(), llvm::GIM_CheckAPFloatImmPredicate, llvm::GIM_CheckAPIntImmPredicate, llvm::GIM_CheckAtomicOrdering, llvm::GIM_CheckAtomicOrderingOrStrongerThan, llvm::GIM_CheckAtomicOrderingWeakerThan, llvm::GIM_CheckCmpPredicate, llvm::GIM_CheckComplexPattern, llvm::GIM_CheckConstantInt, llvm::GIM_CheckCxxInsnPredicate, llvm::GIM_CheckFeatures, llvm::GIM_CheckHasNoUse, 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_CheckLiteralInt, llvm::GIM_CheckMemoryAddressSpace, llvm::GIM_CheckMemoryAlignment, llvm::GIM_CheckMemorySizeEqualTo, llvm::GIM_CheckMemorySizeEqualToLLT, llvm::GIM_CheckMemorySizeGreaterThanLLT, llvm::GIM_CheckMemorySizeLessThanLLT, llvm::GIM_CheckNumOperands, llvm::GIM_CheckOpcode, llvm::GIM_CheckOpcodeIsEither, llvm::GIM_CheckPointerToAny, llvm::GIM_CheckRegBankForClass, llvm::GIM_CheckType, llvm::GIM_RecordInsn, llvm::GIM_RecordNamedOperand, llvm::GIM_Reject, llvm::GIM_SwitchOpcode, llvm::GIM_SwitchType, llvm::GIM_Try, llvm::GIPFP_APFloat_Invalid, llvm::GIPFP_APInt_Invalid, llvm::GIPFP_I64_Invalid, llvm::GIPFP_MI_Invalid, llvm::GIR_AddImm, llvm::GIR_AddImplicitDef, llvm::GIR_AddImplicitUse, llvm::GIR_AddRegister, llvm::GIR_AddTempRegister, llvm::GIR_AddTempSubRegister, llvm::GIR_BuildMI, llvm::GIR_ComplexRenderer, llvm::GIR_ComplexSubOperandRenderer, llvm::GIR_ConstrainOperandRC, llvm::GIR_ConstrainSelectedInstOperands, llvm::GIR_Copy, llvm::GIR_CopyConstantAsSImm, llvm::GIR_CopyFConstantAsFPImm, llvm::GIR_CopyOrAddZeroReg, llvm::GIR_CopySubReg, llvm::GIR_Coverage, llvm::GIR_CustomOperandRenderer, llvm::GIR_CustomRenderer, llvm::GIR_Done, llvm::GIR_EraseFromParent, llvm::GIR_MakeTempReg, llvm::GIR_MergeMemOperands, llvm::GIR_MutateOpcode, llvm::GIU_MergeMemOperands_EndOfList, I, llvm::RegState::Implicit, llvm::isAtLeastOrStrongerThan(), llvm::isBuildVectorAllOnes(), llvm::isBuildVectorAllZeros(), llvm::MachineOperand::isCImm(), llvm::MachineOperand::isImm(), llvm::MachineOperand::isIntrinsicID(), isObviouslySafeToFold(), isOperandImmEqual(), llvm::Register::isPhysical(), llvm::LLT::isPointer(), llvm::MachineOperand::isPredicate(), llvm::MachineOperand::isReg(), llvm::isStrongerThan(), llvm_unreachable, MF, MI, llvm::MinAlign(), llvm::InstructionSelector::MatcherState::MIs, MRI, llvm::MachineInstr::NoFPExcept, llvm::SmallVectorImpl< T >::pop_back_val(), llvm::SmallVectorTemplateBase< T, bool >::push_back(), llvm::InstructionSelector::MatcherState::RecordedOperands, llvm::InstructionSelector::MatcherState::Renderers, llvm::SmallVectorImpl< T >::resize(), llvm::CodeGenCoverage::setCovered(), llvm::SignExtend64(), llvm::SmallVectorBase< Size_T >::size(), Size, SubReg, Success, llvm::InstructionSelector::MatcherState::TempRegisters, testImmPredicate_APFloat(), testImmPredicate_APInt(), testImmPredicate_I64(), testMIPredicate_MI(), TII, TRI, llvm::InstructionSelector::ISelInfoTy< PredicateBitset, ComplexMatcherMemFn, CustomRendererFn >::TypeIDMap, and llvm::InstructionSelector::ISelInfoTy< PredicateBitset, ComplexMatcherMemFn, CustomRendererFn >::TypeObjects.
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inlineprotectedvirtual |
Definition at line 534 of file InstructionSelector.h.
References llvm_unreachable.
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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 38 of file InstructionSelector.cpp.
References llvm::MachineInstr::getOpcode(), llvm::MachineInstr::getOperand(), llvm::MachineOperand::getReg(), llvm::MachineOperand::isReg(), MRI, and RHS.
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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 55 of file InstructionSelector.cpp.
References llvm::ilist_node_impl< OptionsT >::getIterator(), llvm::MachineInstr::getParent(), and MI.
Referenced by executeMatchTable().
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Definition at line 29 of file InstructionSelector.cpp.
References llvm::getIConstantVRegValWithLookThrough(), llvm::MachineOperand::getReg(), llvm::MachineOperand::isReg(), and MRI.
Referenced by executeMatchTable().
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pure virtual |
Select the (possibly generic) instruction I
to only use target-specific opcodes.
It is OK to insert multiple instructions, but they cannot be generic pre-isel instructions.
Implemented in llvm::AMDGPUInstructionSelector.
Referenced by llvm::InstructionSelect::runOnMachineFunction().
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inlinevirtual |
Definition at line 452 of file InstructionSelector.h.
References llvm_unreachable.
Referenced by setupMF().
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Setup per-MF selector state.
Reimplemented in llvm::AMDGPUInstructionSelector.
Definition at line 457 of file InstructionSelector.h.
References BFI, CoverageInfo, CurMBB, MF, PSI, and setupGeneratedPerFunctionState().
Referenced by llvm::InstructionSelect::runOnMachineFunction(), and llvm::AMDGPUInstructionSelector::setupMF().
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Definition at line 488 of file InstructionSelector.h.
References BFI, CurMBB, F, llvm::MachineFunction::getFunction(), MF, PSI, and llvm::shouldOptForSize().
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Definition at line 546 of file InstructionSelector.h.
References llvm_unreachable.
Referenced by executeMatchTable().
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inlineprotectedvirtual |
Definition at line 542 of file InstructionSelector.h.
References llvm_unreachable.
Referenced by executeMatchTable().
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inlineprotectedvirtual |
Definition at line 538 of file InstructionSelector.h.
References llvm_unreachable.
Referenced by executeMatchTable().
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inlineprotectedvirtual |
Definition at line 550 of file InstructionSelector.h.
References llvm_unreachable.
Referenced by executeMatchTable().
BlockFrequencyInfo* llvm::InstructionSelector::BFI = nullptr |
Definition at line 448 of file InstructionSelector.h.
Referenced by llvm::AMDGPUInstructionSelector::setupMF(), setupMF(), and shouldOptForSize().
CodeGenCoverage* llvm::InstructionSelector::CoverageInfo = nullptr |
Definition at line 444 of file InstructionSelector.h.
Referenced by executeMatchTable(), llvm::AMDGPUInstructionSelector::select(), llvm::AMDGPUInstructionSelector::setupMF(), and setupMF().
MachineBasicBlock* llvm::InstructionSelector::CurMBB = nullptr |
Definition at line 450 of file InstructionSelector.h.
Referenced by llvm::InstructionSelect::runOnMachineFunction(), setupMF(), and shouldOptForSize().
GISelKnownBits* llvm::InstructionSelector::KnownBits = nullptr |
Definition at line 445 of file InstructionSelector.h.
MachineFunction* llvm::InstructionSelector::MF = nullptr |
Definition at line 446 of file InstructionSelector.h.
Referenced by executeMatchTable(), llvm::AMDGPUInstructionSelector::setupMF(), setupMF(), and shouldOptForSize().
ProfileSummaryInfo* llvm::InstructionSelector::PSI = nullptr |
Definition at line 447 of file InstructionSelector.h.
Referenced by llvm::AMDGPUInstructionSelector::setupMF(), setupMF(), and shouldOptForSize().