LLVM 17.0.0git
|
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 434 of file InstructionSelector.h.
|
protected |
Definition at line 476 of file InstructionSelector.h.
|
protected |
Definition at line 479 of file InstructionSelector.h.
|
protected |
Definition at line 478 of file InstructionSelector.h.
|
virtualdefault |
|
protecteddefault |
|
protected |
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, Flags, llvm::LLT::getAddressSpace(), llvm::MachineMemOperand::getAddrSpace(), llvm::MachineMemOperand::getAlign(), llvm::MachineOperand::getCImm(), llvm::MachineFunction::getDataLayout(), llvm::getDefIgnoringCopies(), 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_CheckIsSameOperandIgnoreCopies, 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_RecordInsnIgnoreCopies, 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.
|
inlineprotectedvirtual |
Definition at line 540 of file InstructionSelector.h.
References llvm_unreachable.
|
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 38 of file InstructionSelector.cpp.
References llvm::MachineInstr::getOpcode(), llvm::MachineInstr::getOperand(), llvm::MachineOperand::getReg(), llvm::MachineOperand::isReg(), MRI, and RHS.
|
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 55 of file InstructionSelector.cpp.
References llvm::ilist_node_impl< OptionsT >::getIterator(), llvm::MachineInstr::getParent(), and MI.
Referenced by executeMatchTable().
|
protected |
Definition at line 29 of file InstructionSelector.cpp.
References llvm::getIConstantVRegValWithLookThrough(), llvm::MachineOperand::getReg(), llvm::MachineOperand::isReg(), and MRI.
Referenced by executeMatchTable().
|
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().
|
inlinevirtual |
Definition at line 458 of file InstructionSelector.h.
References llvm_unreachable.
Referenced by setupMF().
|
inlinevirtual |
Setup per-MF selector state.
Reimplemented in llvm::AMDGPUInstructionSelector.
Definition at line 463 of file InstructionSelector.h.
References BFI, CoverageInfo, CurMBB, MF, PSI, and setupGeneratedPerFunctionState().
Referenced by llvm::InstructionSelect::runOnMachineFunction(), and llvm::AMDGPUInstructionSelector::setupMF().
|
inlineprotected |
Definition at line 494 of file InstructionSelector.h.
References BFI, CurMBB, F, llvm::MachineFunction::getFunction(), MF, PSI, and llvm::shouldOptForSize().
|
inlineprotectedvirtual |
Definition at line 552 of file InstructionSelector.h.
References llvm_unreachable.
Referenced by executeMatchTable().
|
inlineprotectedvirtual |
Definition at line 548 of file InstructionSelector.h.
References llvm_unreachable.
Referenced by executeMatchTable().
|
inlineprotectedvirtual |
Definition at line 544 of file InstructionSelector.h.
References llvm_unreachable.
Referenced by executeMatchTable().
|
inlineprotectedvirtual |
Definition at line 556 of file InstructionSelector.h.
References llvm_unreachable.
Referenced by executeMatchTable().
BlockFrequencyInfo* llvm::InstructionSelector::BFI = nullptr |
Definition at line 454 of file InstructionSelector.h.
Referenced by llvm::AMDGPUInstructionSelector::setupMF(), setupMF(), and shouldOptForSize().
CodeGenCoverage* llvm::InstructionSelector::CoverageInfo = nullptr |
Definition at line 450 of file InstructionSelector.h.
Referenced by executeMatchTable(), llvm::AMDGPUInstructionSelector::select(), llvm::AMDGPUInstructionSelector::setupMF(), and setupMF().
MachineBasicBlock* llvm::InstructionSelector::CurMBB = nullptr |
Definition at line 456 of file InstructionSelector.h.
Referenced by llvm::InstructionSelect::runOnMachineFunction(), setupMF(), and shouldOptForSize().
GISelKnownBits* llvm::InstructionSelector::KnownBits = nullptr |
Definition at line 451 of file InstructionSelector.h.
MachineFunction* llvm::InstructionSelector::MF = nullptr |
Definition at line 452 of file InstructionSelector.h.
Referenced by executeMatchTable(), llvm::AMDGPUInstructionSelector::setupMF(), setupMF(), and shouldOptForSize().
ProfileSummaryInfo* llvm::InstructionSelector::PSI = nullptr |
Definition at line 453 of file InstructionSelector.h.
Referenced by llvm::AMDGPUInstructionSelector::setupMF(), setupMF(), and shouldOptForSize().