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

Public Types
enum	LegalizeResult { AlreadyLegal , Legalized , UnableToLegalize }

Public Member Functions
const LegalizerInfo &	getLegalizerInfo () const
	Expose LegalizerInfo so the clients can re-use.

const TargetLowering &	getTargetLowering () const

GISelKnownBits *	getKnownBits () const

	LegalizerHelper (MachineFunction &MF, GISelChangeObserver &Observer, MachineIRBuilder &B)

	LegalizerHelper (MachineFunction &MF, const LegalizerInfo &LI, GISelChangeObserver &Observer, MachineIRBuilder &B, GISelKnownBits *KB=nullptr)

LegalizeResult	legalizeInstrStep (MachineInstr &MI, LostDebugLocObserver &LocObserver)
	Replace `MI` by a sequence of legal instructions that can implement the same operation.

LegalizeResult	libcall (MachineInstr &MI, LostDebugLocObserver &LocObserver)
	Legalize an instruction by emiting a runtime library call instead.

LegalizeResult	narrowScalar (MachineInstr &MI, unsigned TypeIdx, LLT NarrowTy)
	Legalize an instruction by reducing the width of the underlying scalar type.

LegalizeResult	widenScalar (MachineInstr &MI, unsigned TypeIdx, LLT WideTy)
	Legalize an instruction by performing the operation on a wider scalar type (for example a 16-bit addition can be safely performed at 32-bits precision, ignoring the unused bits).

LegalizeResult	bitcast (MachineInstr &MI, unsigned TypeIdx, LLT Ty)
	Legalize an instruction by replacing the value type.

LegalizeResult	lower (MachineInstr &MI, unsigned TypeIdx, LLT Ty)
	Legalize an instruction by splitting it into simpler parts, hopefully understood by the target.

LegalizeResult	fewerElementsVector (MachineInstr &MI, unsigned TypeIdx, LLT NarrowTy)
	Legalize a vector instruction by splitting into multiple components, each acting on the same scalar type as the original but with fewer elements.

LegalizeResult	moreElementsVector (MachineInstr &MI, unsigned TypeIdx, LLT MoreTy)
	Legalize a vector instruction by increasing the number of vector elements involved and ignoring the added elements later.

Register	coerceToScalar (Register Val)
	Cast the given value to an LLT::scalar with an equivalent size.

void	widenScalarSrc (MachineInstr &MI, LLT WideTy, unsigned OpIdx, unsigned ExtOpcode)
	Legalize a single operand `OpIdx` of the machine instruction `MI` as a Use by extending the operand's type to `WideTy` using the specified `ExtOpcode` for the extension instruction, and replacing the vreg of the operand in place.

void	narrowScalarSrc (MachineInstr &MI, LLT NarrowTy, unsigned OpIdx)
	Legalize a single operand `OpIdx` of the machine instruction `MI` as a Use by truncating the operand's type to `NarrowTy` using G_TRUNC, and replacing the vreg of the operand in place.

void	widenScalarDst (MachineInstr &MI, LLT WideTy, unsigned OpIdx=0, unsigned TruncOpcode=TargetOpcode::G_TRUNC)
	Legalize a single operand `OpIdx` of the machine instruction `MI` as a Def by extending the operand's type to `WideTy` and truncating it back with the `TruncOpcode`, and replacing the vreg of the operand in place.

void	narrowScalarDst (MachineInstr &MI, LLT NarrowTy, unsigned OpIdx, unsigned ExtOpcode)

void	moreElementsVectorDst (MachineInstr &MI, LLT MoreTy, unsigned OpIdx)
	Legalize a single operand `OpIdx` of the machine instruction `MI` as a Def by performing it with additional vector elements and extracting the result elements, and replacing the vreg of the operand in place.

void	moreElementsVectorSrc (MachineInstr &MI, LLT MoreTy, unsigned OpIdx)
	Legalize a single operand `OpIdx` of the machine instruction `MI` as a Use by producing a vector with undefined high elements, extracting the original vector type, and replacing the vreg of the operand in place.

void	bitcastSrc (MachineInstr &MI, LLT CastTy, unsigned OpIdx)
	Legalize a single operand `OpIdx` of the machine instruction `MI` as a use by inserting a G_BITCAST to `CastTy`.

void	bitcastDst (MachineInstr &MI, LLT CastTy, unsigned OpIdx)
	Legalize a single operand `OpIdx` of the machine instruction `MI` as a def by inserting a G_BITCAST from `CastTy`.

Align	getStackTemporaryAlignment (LLT Type, Align MinAlign=Align()) const
	Return the alignment to use for a stack temporary object with the given type.

MachineInstrBuilder	createStackTemporary (TypeSize Bytes, Align Alignment, MachinePointerInfo &PtrInfo)
	Create a stack temporary based on the size in bytes and the alignment.

Register	getVectorElementPointer (Register VecPtr, LLT VecTy, Register Index)
	Get a pointer to vector element `Index` located in memory for a vector of type `VecTy` starting at a base address of `VecPtr`.

LegalizeResult	fewerElementsVectorMultiEltType (GenericMachineInstr &MI, unsigned NumElts, std::initializer_list< unsigned > NonVecOpIndices={})
	Handles most opcodes.

LegalizeResult	fewerElementsVectorPhi (GenericMachineInstr &MI, unsigned NumElts)

LegalizeResult	moreElementsVectorPhi (MachineInstr &MI, unsigned TypeIdx, LLT MoreTy)

LegalizeResult	moreElementsVectorShuffle (MachineInstr &MI, unsigned TypeIdx, LLT MoreTy)

LegalizeResult	fewerElementsVectorUnmergeValues (MachineInstr &MI, unsigned TypeIdx, LLT NarrowTy)

LegalizeResult	fewerElementsVectorMerge (MachineInstr &MI, unsigned TypeIdx, LLT NarrowTy)

LegalizeResult	fewerElementsVectorExtractInsertVectorElt (MachineInstr &MI, unsigned TypeIdx, LLT NarrowTy)

LegalizeResult	equalizeVectorShuffleLengths (MachineInstr &MI)
	Equalize source and destination vector sizes of G_SHUFFLE_VECTOR.

LegalizeResult	reduceLoadStoreWidth (GLoadStore &MI, unsigned TypeIdx, LLT NarrowTy)

LegalizeResult	narrowScalarShiftByConstant (MachineInstr &MI, const APInt &Amt, LLT HalfTy, LLT ShiftAmtTy)

LegalizeResult	fewerElementsVectorReductions (MachineInstr &MI, unsigned TypeIdx, LLT NarrowTy)

LegalizeResult	fewerElementsVectorShuffle (MachineInstr &MI, unsigned TypeIdx, LLT NarrowTy)

LegalizeResult	narrowScalarShift (MachineInstr &MI, unsigned TypeIdx, LLT Ty)

LegalizeResult	narrowScalarAddSub (MachineInstr &MI, unsigned TypeIdx, LLT NarrowTy)

LegalizeResult	narrowScalarMul (MachineInstr &MI, LLT Ty)

LegalizeResult	narrowScalarFPTOI (MachineInstr &MI, unsigned TypeIdx, LLT Ty)

LegalizeResult	narrowScalarExtract (MachineInstr &MI, unsigned TypeIdx, LLT Ty)

LegalizeResult	narrowScalarInsert (MachineInstr &MI, unsigned TypeIdx, LLT Ty)

LegalizeResult	narrowScalarBasic (MachineInstr &MI, unsigned TypeIdx, LLT Ty)

LegalizeResult	narrowScalarExt (MachineInstr &MI, unsigned TypeIdx, LLT Ty)

LegalizeResult	narrowScalarSelect (MachineInstr &MI, unsigned TypeIdx, LLT Ty)

LegalizeResult	narrowScalarCTLZ (MachineInstr &MI, unsigned TypeIdx, LLT Ty)

LegalizeResult	narrowScalarCTTZ (MachineInstr &MI, unsigned TypeIdx, LLT Ty)

LegalizeResult	narrowScalarCTPOP (MachineInstr &MI, unsigned TypeIdx, LLT Ty)

LegalizeResult	narrowScalarFLDEXP (MachineInstr &MI, unsigned TypeIdx, LLT Ty)

LegalizeResult	bitcastExtractVectorElt (MachineInstr &MI, unsigned TypeIdx, LLT CastTy)
	Perform Bitcast legalize action on G_EXTRACT_VECTOR_ELT.

LegalizeResult	bitcastInsertVectorElt (MachineInstr &MI, unsigned TypeIdx, LLT CastTy)
	Perform Bitcast legalize action on G_INSERT_VECTOR_ELT.

LegalizeResult	lowerFConstant (MachineInstr &MI)

LegalizeResult	lowerBitcast (MachineInstr &MI)

LegalizeResult	lowerLoad (GAnyLoad &MI)

LegalizeResult	lowerStore (GStore &MI)

LegalizeResult	lowerBitCount (MachineInstr &MI)

LegalizeResult	lowerFunnelShiftWithInverse (MachineInstr &MI)

LegalizeResult	lowerFunnelShiftAsShifts (MachineInstr &MI)

LegalizeResult	lowerFunnelShift (MachineInstr &MI)

LegalizeResult	lowerEXT (MachineInstr &MI)

LegalizeResult	lowerTRUNC (MachineInstr &MI)

LegalizeResult	lowerRotateWithReverseRotate (MachineInstr &MI)

LegalizeResult	lowerRotate (MachineInstr &MI)

LegalizeResult	lowerU64ToF32BitOps (MachineInstr &MI)

LegalizeResult	lowerUITOFP (MachineInstr &MI)

LegalizeResult	lowerSITOFP (MachineInstr &MI)

LegalizeResult	lowerFPTOUI (MachineInstr &MI)

LegalizeResult	lowerFPTOSI (MachineInstr &MI)

LegalizeResult	lowerFPTRUNC_F64_TO_F16 (MachineInstr &MI)

LegalizeResult	lowerFPTRUNC (MachineInstr &MI)

LegalizeResult	lowerFPOWI (MachineInstr &MI)

LegalizeResult	lowerISFPCLASS (MachineInstr &MI)

LegalizeResult	lowerMinMax (MachineInstr &MI)

LegalizeResult	lowerFCopySign (MachineInstr &MI)

LegalizeResult	lowerFMinNumMaxNum (MachineInstr &MI)

LegalizeResult	lowerFMad (MachineInstr &MI)

LegalizeResult	lowerIntrinsicRound (MachineInstr &MI)

LegalizeResult	lowerFFloor (MachineInstr &MI)

LegalizeResult	lowerMergeValues (MachineInstr &MI)

LegalizeResult	lowerUnmergeValues (MachineInstr &MI)

LegalizeResult	lowerExtractInsertVectorElt (MachineInstr &MI)
	Lower a vector extract or insert by writing the vector to a stack temporary and reloading the element or vector.

LegalizeResult	lowerShuffleVector (MachineInstr &MI)

LegalizeResult	lowerDynStackAlloc (MachineInstr &MI)

LegalizeResult	lowerStackSave (MachineInstr &MI)

LegalizeResult	lowerStackRestore (MachineInstr &MI)

LegalizeResult	lowerExtract (MachineInstr &MI)

LegalizeResult	lowerInsert (MachineInstr &MI)

LegalizeResult	lowerSADDO_SSUBO (MachineInstr &MI)

LegalizeResult	lowerAddSubSatToMinMax (MachineInstr &MI)

LegalizeResult	lowerAddSubSatToAddoSubo (MachineInstr &MI)

LegalizeResult	lowerShlSat (MachineInstr &MI)

LegalizeResult	lowerBswap (MachineInstr &MI)

LegalizeResult	lowerBitreverse (MachineInstr &MI)

LegalizeResult	lowerReadWriteRegister (MachineInstr &MI)

LegalizeResult	lowerSMULH_UMULH (MachineInstr &MI)

LegalizeResult	lowerSelect (MachineInstr &MI)

LegalizeResult	lowerDIVREM (MachineInstr &MI)

LegalizeResult	lowerAbsToAddXor (MachineInstr &MI)

LegalizeResult	lowerAbsToMaxNeg (MachineInstr &MI)

LegalizeResult	lowerVectorReduction (MachineInstr &MI)

LegalizeResult	lowerMemcpyInline (MachineInstr &MI)

LegalizeResult	lowerMemCpyFamily (MachineInstr &MI, unsigned MaxLen=0)

Public Attributes
MachineIRBuilder &	MIRBuilder
	Expose MIRBuilder so clients can set their own RecordInsertInstruction functions.

GISelChangeObserver &	Observer
	To keep track of changes made by the LegalizerHelper.

Detailed Description

Definition at line 47 of file LegalizerHelper.h.

Member Enumeration Documentation

◆ LegalizeResult

enum llvm::LegalizerHelper::LegalizeResult

Enumerator
AlreadyLegal	Instruction was already legal and no change was made to the MachineFunction.
Legalized	Instruction has been legalized and the MachineFunction changed.
UnableToLegalize	Some kind of error has occurred and we could not legalize this instruction.

Definition at line 63 of file LegalizerHelper.h.

Constructor & Destructor Documentation

◆ LegalizerHelper() [1/2]

LegalizerHelper::LegalizerHelper	(	MachineFunction &	MF,
		GISelChangeObserver &	Observer,
		MachineIRBuilder &	B
	)

Definition at line 102 of file LegalizerHelper.cpp.

◆ LegalizerHelper() [2/2]

LegalizerHelper::LegalizerHelper	(	MachineFunction &	MF,
		const LegalizerInfo &	LI,
		GISelChangeObserver &	Observer,
		MachineIRBuilder &	B,
		GISelKnownBits *	KB = `nullptr`
	)

Definition at line 109 of file LegalizerHelper.cpp.

Member Function Documentation

◆ bitcast()

LegalizerHelper::LegalizeResult LegalizerHelper::bitcast	(	MachineInstr &	MI,
		unsigned	TypeIdx,
		LLT	Ty
	)

Legalize an instruction by replacing the value type.

Definition at line 3401 of file LegalizerHelper.cpp.

References bitcastDst(), bitcastExtractVectorElt(), bitcastInsertVectorElt(), bitcastSrc(), llvm::GISelChangeObserver::changedInstr(), llvm::GISelChangeObserver::changingInstr(), llvm::dbgs(), llvm::MachineMemOperand::getMemoryType(), llvm::LLT::getSizeInBits(), llvm::MachineRegisterInfo::getType(), llvm::LLT::isVector(), Legalized, LLVM_DEBUG, MI, Observer, llvm::MachineMemOperand::setType(), and UnableToLegalize.

Referenced by legalizeInstrStep().

◆ bitcastDst()

void LegalizerHelper::bitcastDst	(	MachineInstr &	MI,
		LLT	CastTy,
		unsigned	OpIdx
	)

Legalize a single operand OpIdx of the machine instruction MI as a def by inserting a G_BITCAST from CastTy.

Definition at line 1650 of file LegalizerHelper.cpp.

References llvm::MachineIRBuilder::buildBitcast(), llvm::MachineRegisterInfo::createGenericVirtualRegister(), llvm::MachineIRBuilder::getInsertPt(), llvm::MachineIRBuilder::getMBB(), MI, MIRBuilder, llvm::MachineIRBuilder::setInsertPt(), and llvm::MachineOperand::setReg().

Referenced by bitcast(), and llvm::AMDGPULegalizerInfo::legalizeSBufferLoad().

◆ bitcastExtractVectorElt()

LegalizerHelper::LegalizeResult LegalizerHelper::bitcastExtractVectorElt	(	MachineInstr &	MI,
		unsigned	TypeIdx,
		LLT	CastTy
	)

Perform Bitcast legalize action on G_EXTRACT_VECTOR_ELT.

Perform a G_EXTRACT_VECTOR_ELT in a different sized vector element.

If this is casting to a vector with a smaller element size, perform multiple element extracts and merge the results. If this is coercing to a vector with larger elements, index the bitcasted vector and extract the target element with bit operations. This is intended to force the indexing in the native register size for architectures that can dynamically index the register file.

Definition at line 2969 of file LegalizerHelper.cpp.

References llvm::MachineIRBuilder::buildAdd(), llvm::MachineIRBuilder::buildBitcast(), llvm::MachineIRBuilder::buildBuildVector(), llvm::MachineIRBuilder::buildConstant(), llvm::MachineIRBuilder::buildExtractVectorElement(), llvm::MachineIRBuilder::buildLShr(), llvm::MachineIRBuilder::buildMul(), llvm::MachineIRBuilder::buildTrunc(), getBitcastWiderVectorElementOffset(), llvm::LLT::getElementType(), llvm::ElementCount::getFixed(), llvm::LLT::getNumElements(), llvm::MachineInstrBuilder::getReg(), llvm::LLT::getSizeInBits(), I, Idx, llvm::isPowerOf2_32(), llvm::LLT::isVector(), Legalized, llvm::Log2_32(), MI, MIRBuilder, llvm::LLT::scalarOrVector(), and UnableToLegalize.

Referenced by bitcast().

◆ bitcastInsertVectorElt()

LegalizerHelper::LegalizeResult LegalizerHelper::bitcastInsertVectorElt	(	MachineInstr &	MI,
		unsigned	TypeIdx,
		LLT	CastTy
	)

Perform Bitcast legalize action on G_INSERT_VECTOR_ELT.

Perform a G_INSERT_VECTOR_ELT in a different sized vector element.

If this is increasing the element size, perform the indexing in the target element type, and use bit operations to insert at the element position. This is intended for architectures that can dynamically index the register file and want to force indexing in the native register size.

Definition at line 3105 of file LegalizerHelper.cpp.

References llvm::MachineIRBuilder::buildBitcast(), buildBitFieldInsert(), llvm::MachineIRBuilder::buildConstant(), llvm::MachineIRBuilder::buildExtractVectorElement(), llvm::MachineIRBuilder::buildInsertVectorElement(), llvm::MachineIRBuilder::buildLShr(), getBitcastWiderVectorElementOffset(), llvm::LLT::getElementType(), llvm::LLT::getNumElements(), llvm::MachineInstrBuilder::getReg(), llvm::LLT::getSizeInBits(), Idx, llvm::isPowerOf2_32(), llvm::LLT::isVector(), Legalized, llvm::Log2_32(), MI, MIRBuilder, and UnableToLegalize.

Referenced by bitcast().

◆ bitcastSrc()

void LegalizerHelper::bitcastSrc	(	MachineInstr &	MI,
		LLT	CastTy,
		unsigned	OpIdx
	)

Legalize a single operand OpIdx of the machine instruction MI as a use by inserting a G_BITCAST to CastTy.

Definition at line 1645 of file LegalizerHelper.cpp.

References llvm::MachineIRBuilder::buildBitcast(), llvm::MachineInstrBuilder::getReg(), MI, and MIRBuilder.

Referenced by bitcast().

◆ coerceToScalar()

Register LegalizerHelper::coerceToScalar ( Register Val )

Cast the given value to an LLT::scalar with an equivalent size.

Returns the register to use if an instruction was inserted. Returns the original register if no coercion was necessary.

Definition at line 1574 of file LegalizerHelper.cpp.

References assert(), llvm::MachineIRBuilder::buildBitcast(), llvm::MachineIRBuilder::buildPtrToInt(), DL, llvm::LLT::getAddressSpace(), llvm::MachineIRBuilder::getDataLayout(), llvm::LLT::getElementType(), llvm::MachineInstrBuilder::getReg(), llvm::LLT::getSizeInBits(), llvm::MachineRegisterInfo::getType(), llvm::LLT::isPointer(), llvm::LLT::isScalar(), llvm::LLT::isVector(), MIRBuilder, and llvm::LLT::scalar().

Referenced by lowerUnmergeValues().

◆ createStackTemporary()

MachineInstrBuilder LegalizerHelper::createStackTemporary	(	TypeSize	Bytes,
		Align	Alignment,
		MachinePointerInfo &	PtrInfo
	)

Create a stack temporary based on the size in bytes and the alignment.

Definition at line 3800 of file LegalizerHelper.cpp.

References llvm::MachineIRBuilder::buildFrameIndex(), llvm::MachineFrameInfo::CreateStackObject(), DL, llvm::MachineIRBuilder::getDataLayout(), llvm::MachinePointerInfo::getFixedStack(), llvm::MachineFunction::getFrameInfo(), llvm::MachineIRBuilder::getMF(), MIRBuilder, and llvm::LLT::pointer().

Referenced by lowerExtractInsertVectorElt().

◆ equalizeVectorShuffleLengths()

LegalizerHelper::LegalizeResult LegalizerHelper::equalizeVectorShuffleLengths ( MachineInstr & MI )

Equalize source and destination vector sizes of G_SHUFFLE_VECTOR.

Definition at line 5152 of file LegalizerHelper.cpp.

References llvm::alignTo(), llvm::MachineIRBuilder::buildBuildVector(), llvm::MachineIRBuilder::buildConcatVectors(), llvm::MachineIRBuilder::buildExtractVectorElementConstant(), llvm::MachineIRBuilder::buildShuffleVector(), llvm::MachineIRBuilder::buildUndef(), llvm::LLT::fixed_vector(), llvm::LLT::getElementType(), llvm::LLT::getNumElements(), llvm::MachineInstrBuilder::getReg(), I, Idx, Legalized, MI, MIRBuilder, moreElementsVectorDst(), llvm::SmallVectorTemplateBase< T, bool >::push_back(), and llvm::MachineIRBuilder::setInstrAndDebugLoc().

Referenced by moreElementsVectorShuffle().

◆ fewerElementsVector()

LegalizerHelper::LegalizeResult LegalizerHelper::fewerElementsVector	(	MachineInstr &	MI,
		unsigned	TypeIdx,
		LLT	NarrowTy
	)

Legalize a vector instruction by splitting into multiple components, each acting on the same scalar type as the original but with fewer elements.

Definition at line 4362 of file LegalizerHelper.cpp.

References assert(), fewerElementsVectorExtractInsertVectorElt(), fewerElementsVectorMerge(), fewerElementsVectorMultiEltType(), fewerElementsVectorPhi(), fewerElementsVectorReductions(), fewerElementsVectorShuffle(), fewerElementsVectorUnmergeValues(), llvm::LLT::getNumElements(), llvm::MachineRegisterInfo::getType(), GISEL_VECREDUCE_CASES_NONSEQ, llvm::LLT::isVector(), MI, reduceLoadStoreWidth(), and UnableToLegalize.

Referenced by llvm::AMDGPURegisterBankInfo::applyMappingLoad(), and legalizeInstrStep().

◆ fewerElementsVectorExtractInsertVectorElt()

LegalizerHelper::LegalizeResult LegalizerHelper::fewerElementsVectorExtractInsertVectorElt	(	MachineInstr &	MI,
		unsigned	TypeIdx,
		LLT	NarrowTy
	)

Definition at line 4193 of file LegalizerHelper.cpp.

References assert(), llvm::MachineIRBuilder::buildConstant(), llvm::MachineIRBuilder::buildExtractVectorElement(), llvm::MachineIRBuilder::buildInsertVectorElement(), llvm::MachineIRBuilder::buildUndef(), llvm::getIConstantVRegValWithLookThrough(), llvm::LLT::getNumElements(), llvm::MachineRegisterInfo::getType(), Idx, llvm::LLT::isVector(), Legalized, lowerExtractInsertVectorElt(), MI, MIRBuilder, and UnableToLegalize.

Referenced by fewerElementsVector().

◆ fewerElementsVectorMerge()

LegalizerHelper::LegalizeResult LegalizerHelper::fewerElementsVectorMerge	(	MachineInstr &	MI,
		unsigned	TypeIdx,
		LLT	NarrowTy
	)

Definition at line 4107 of file LegalizerHelper.cpp.

References assert(), llvm::MachineIRBuilder::buildMergeLikeInstr(), llvm::MachineIRBuilder::buildUnmerge(), llvm::LLT::getNumElements(), llvm::MachineInstrBuilder::getReg(), llvm::LLT::getScalarType(), llvm::LLT::getSizeInBits(), llvm::MachineRegisterInfo::getType(), llvm::LLT::isVector(), Legalized, MI, MIRBuilder, llvm::Offset, llvm::SmallVectorTemplateBase< T, bool >::push_back(), and UnableToLegalize.

Referenced by fewerElementsVector().

◆ fewerElementsVectorMultiEltType()

LegalizerHelper::LegalizeResult LegalizerHelper::fewerElementsVectorMultiEltType	(	GenericMachineInstr &	MI,
		unsigned	NumElts,
		std::initializer_list< unsigned >	NonVecOpIndices = `{}`
	)

Handles most opcodes.

Split MI into same instruction on sub-vectors or scalars with NumElts elements (1 for scalar). Supports uneven splits: there can be leftover sub-vector with fewer then NumElts or a leftover scalar. To avoid this use moreElements first and set MI number of elements to multiple of NumElts. Non-vector operands that should be used on all sub-instructions without split are listed in NonVecOpIndices.

Definition at line 3940 of file LegalizerHelper.cpp.

References assert(), broadcastSrcOp(), llvm::MachineIRBuilder::buildInstr(), llvm::MachineIRBuilder::buildMergeLikeInstr(), llvm::LLT::getNumElements(), llvm::MachineRegisterInfo::getType(), hasSameNumEltsOnAllVectorOperands(), I, llvm::is_contained(), Legalized, makeDstOps(), MI, MIRBuilder, llvm::SmallVectorTemplateBase< T, bool >::push_back(), llvm::size(), and Uses.

Referenced by fewerElementsVector().

◆ fewerElementsVectorPhi()

LegalizerHelper::LegalizeResult LegalizerHelper::fewerElementsVectorPhi	(	GenericMachineInstr &	MI,
		unsigned	NumElts
	)

Definition at line 4010 of file LegalizerHelper.cpp.

References llvm::MachineIRBuilder::buildInstr(), llvm::MachineIRBuilder::buildMergeLikeInstr(), llvm::MachineRegisterInfo::createGenericVirtualRegister(), llvm::MachineBasicBlock::getFirstTerminatorForward(), llvm::LLT::getNumElements(), llvm::MachineRegisterInfo::getType(), Legalized, makeDstOps(), MI, MIRBuilder, llvm::SmallVectorTemplateBase< T, bool >::push_back(), and llvm::MachineIRBuilder::setInsertPt().

Referenced by fewerElementsVector().

◆ fewerElementsVectorReductions()

LegalizerHelper::LegalizeResult LegalizerHelper::fewerElementsVectorReductions	(	MachineInstr &	MI,
		unsigned	TypeIdx,
		LLT	NarrowTy
	)

◆ fewerElementsVectorShuffle()

LegalizerHelper::LegalizeResult LegalizerHelper::fewerElementsVectorShuffle	(	MachineInstr &	MI,
		unsigned	TypeIdx,
		LLT	NarrowTy
	)

◆ fewerElementsVectorUnmergeValues()

LegalizerHelper::LegalizeResult LegalizerHelper::fewerElementsVectorUnmergeValues	(	MachineInstr &	MI,
		unsigned	TypeIdx,
		LLT	NarrowTy
	)

Definition at line 4058 of file LegalizerHelper.cpp.

References llvm::MachineInstrBuilder::addDef(), llvm::MachineInstrBuilder::addUse(), assert(), llvm::MachineIRBuilder::buildInstr(), llvm::MachineIRBuilder::buildUnmerge(), llvm::MachineInstr::getNumOperands(), llvm::LLT::getScalarType(), llvm::LLT::getSizeInBits(), llvm::MachineRegisterInfo::getType(), I, llvm::LLT::isVector(), Legalized, MI, MIRBuilder, and UnableToLegalize.

Referenced by fewerElementsVector().

◆ getKnownBits()

GISelKnownBits * llvm::LegalizerHelper::getKnownBits ( ) const

inline

Definition at line 79 of file LegalizerHelper.h.

Referenced by llvm::AMDGPULegalizerInfo::buildMultiply().

◆ getLegalizerInfo()

const LegalizerInfo & llvm::LegalizerHelper::getLegalizerInfo ( ) const

inline

Expose LegalizerInfo so the clients can re-use.

Definition at line 77 of file LegalizerHelper.h.

◆ getStackTemporaryAlignment()

Align LegalizerHelper::getStackTemporaryAlignment	(	LLT	Type,
		Align	MinAlign = `Align()`
	)		const

Return the alignment to use for a stack temporary object with the given type.

Definition at line 3789 of file LegalizerHelper.cpp.

References llvm::LLT::getSizeInBytes(), llvm::MinAlign(), and llvm::PowerOf2Ceil().

Referenced by lowerExtractInsertVectorElt().

◆ getTargetLowering()

const TargetLowering & llvm::LegalizerHelper::getTargetLowering ( ) const

inline

Definition at line 78 of file LegalizerHelper.h.

◆ getVectorElementPointer()

Register LegalizerHelper::getVectorElementPointer	(	Register	VecPtr,
		LLT	VecTy,
		Register	Index
	)

Get a pointer to vector element Index located in memory for a vector of type VecTy starting at a base address of VecPtr.

If Index is out of bounds the returned pointer is unspecified, but will be within the vector bounds.

Definition at line 3830 of file LegalizerHelper.cpp.

References assert(), llvm::MachineIRBuilder::buildConstant(), llvm::MachineIRBuilder::buildMul(), llvm::MachineIRBuilder::buildPtrAdd(), clampDynamicVectorIndex(), llvm::LLT::getElementType(), llvm::MachineInstrBuilder::getReg(), llvm::LLT::getSizeInBits(), llvm::MachineRegisterInfo::getType(), MIRBuilder, and llvm::Mul.

Referenced by lowerExtractInsertVectorElt().

◆ legalizeInstrStep()

LegalizerHelper::LegalizeResult LegalizerHelper::legalizeInstrStep	(	MachineInstr &	MI,
		LostDebugLocObserver &	LocObserver
	)

Replace MI by a sequence of legal instructions that can implement the same operation.

Note that this means MI may be deleted, so any iterator steps should be performed before calling this function. Helper should be initialized to the MachineFunction containing MI.

Considered as an opaque blob, the legal code will use and define the same registers as MI.

Definition at line 116 of file LegalizerHelper.cpp.

References AlreadyLegal, bitcast(), llvm::LegalizeActions::Bitcast, llvm::LegalizeActions::Custom, llvm::dbgs(), llvm::LegalizeActions::FewerElements, fewerElementsVector(), llvm::LegalizerInfo::getAction(), llvm::IRSimilarity::Legal, llvm::LegalizerInfo::legalizeCustom(), Legalized, llvm::LegalizerInfo::legalizeIntrinsic(), llvm::LegalizeActions::Libcall, libcall, LLVM_DEBUG, lower(), llvm::Lower, MI, MIRBuilder, llvm::LegalizeActions::MoreElements, moreElementsVector(), narrowScalar(), llvm::LegalizeActions::NarrowScalar, llvm::MachineIRBuilder::setInstrAndDebugLoc(), UnableToLegalize, widenScalar(), and llvm::LegalizeActions::WidenScalar.

Referenced by llvm::Legalizer::legalizeMachineFunction().

◆ libcall()

LegalizerHelper::LegalizeResult LegalizerHelper::libcall	(	MachineInstr &	MI,
		LostDebugLocObserver &	LocObserver
	)

Legalize an instruction by emiting a runtime library call instead.

Definition at line 926 of file LegalizerHelper.cpp.

References conversionLibcall(), llvm::createMemLibcall(), llvm::dbgs(), llvm::IntegerType::get(), llvm::Function::getContext(), llvm::Type::getDoubleTy(), llvm::Type::getFloatTy(), getFloatTypeForLLT(), llvm::MachineFunction::getFunction(), llvm::Type::getInt32Ty(), llvm::Type::getInt64Ty(), llvm::MachineIRBuilder::getMF(), llvm::MachineIRBuilder::getMRI(), llvm::LLT::getSizeInBits(), llvm::MachineRegisterInfo::getType(), Legalized, LLVM_DEBUG, MI, MIRBuilder, simpleLibcall(), Size, and UnableToLegalize.

◆ lower()

LegalizerHelper::LegalizeResult LegalizerHelper::lower	(	MachineInstr &	MI,
		unsigned	TypeIdx,
		LLT	Ty
	)

Legalize an instruction by splitting it into simpler parts, hopefully understood by the target.

Definition at line 3478 of file LegalizerHelper.cpp.

Referenced by llvm::RISCVLegalizerInfo::legalizeCustom(), and legalizeInstrStep().

◆ lowerAbsToAddXor()

LegalizerHelper::LegalizeResult LegalizerHelper::lowerAbsToAddXor ( MachineInstr & MI )

Definition at line 7821 of file LegalizerHelper.cpp.

References llvm::Add, llvm::MachineIRBuilder::buildAdd(), llvm::MachineIRBuilder::buildAShr(), llvm::MachineIRBuilder::buildConstant(), llvm::MachineIRBuilder::buildXor(), llvm::LLT::getScalarSizeInBits(), llvm::MachineRegisterInfo::getType(), Legalized, MI, and MIRBuilder.

Referenced by lower().

◆ lowerAbsToMaxNeg()

LegalizerHelper::LegalizeResult LegalizerHelper::lowerAbsToMaxNeg ( MachineInstr & MI )

Definition at line 7838 of file LegalizerHelper.cpp.

References llvm::MachineIRBuilder::buildConstant(), llvm::MachineIRBuilder::buildSMax(), llvm::MachineIRBuilder::buildSub(), llvm::MachineInstrBuilder::getReg(), llvm::MachineRegisterInfo::getType(), Legalized, MI, and MIRBuilder.

Referenced by llvm::AMDGPURegisterBankInfo::applyMappingImpl(), and llvm::RISCVLegalizerInfo::legalizeCustom().

◆ lowerAddSubSatToAddoSubo()

LegalizerHelper::LegalizeResult LegalizerHelper::lowerAddSubSatToAddoSubo ( MachineInstr & MI )

Definition at line 7358 of file LegalizerHelper.cpp.

References llvm::MachineIRBuilder::buildAdd(), llvm::MachineIRBuilder::buildAShr(), llvm::MachineIRBuilder::buildConstant(), llvm::MachineIRBuilder::buildInstr(), llvm::MachineIRBuilder::buildSelect(), llvm::LLT::changeElementSize(), llvm::LLT::getScalarSizeInBits(), llvm::APInt::getSignedMinValue(), llvm::MachineRegisterInfo::getType(), Legalized, LHS, llvm_unreachable, MI, MIRBuilder, and RHS.

Referenced by lower().

◆ lowerAddSubSatToMinMax()

LegalizerHelper::LegalizeResult LegalizerHelper::lowerAddSubSatToMinMax ( MachineInstr & MI )

◆ lowerBitcast()

LegalizerHelper::LegalizeResult LegalizerHelper::lowerBitcast ( MachineInstr & MI )

Definition at line 2877 of file LegalizerHelper.cpp.

References llvm::MachineIRBuilder::buildBitcast(), llvm::MachineIRBuilder::buildMergeLikeInstr(), llvm::LLT::fixed_vector(), llvm::LLT::getElementType(), llvm::LLT::getNumElements(), llvm::MachineInstrBuilder::getReg(), getUnmergePieces(), llvm::LLT::isVector(), Legalized, MI, MIRBuilder, and UnableToLegalize.

Referenced by lower().

◆ lowerBitCount()

LegalizerHelper::LegalizeResult LegalizerHelper::lowerBitCount ( MachineInstr & MI )

Definition at line 5852 of file LegalizerHelper.cpp.

Referenced by lower().

◆ lowerBitreverse()

LegalizerHelper::LegalizeResult LegalizerHelper::lowerBitreverse ( MachineInstr & MI )

Definition at line 7500 of file LegalizerHelper.cpp.

References llvm::MachineIRBuilder::buildInstr(), llvm::LLT::getSizeInBits(), llvm::APInt::getSplat(), llvm::MachineRegisterInfo::getType(), Legalized, MI, MIRBuilder, Size, and SwapN().

Referenced by lower().

◆ lowerBswap()

LegalizerHelper::LegalizeResult LegalizerHelper::lowerBswap ( MachineInstr & MI )

Definition at line 7455 of file LegalizerHelper.cpp.

References llvm::MachineIRBuilder::buildAnd(), llvm::MachineIRBuilder::buildConstant(), llvm::MachineIRBuilder::buildLShr(), llvm::MachineIRBuilder::buildOr(), llvm::MachineIRBuilder::buildShl(), llvm::LLT::getScalarSizeInBits(), llvm::MachineRegisterInfo::getType(), Legalized, MI, and MIRBuilder.

Referenced by lower().

◆ lowerDIVREM()

LegalizerHelper::LegalizeResult LegalizerHelper::lowerDIVREM ( MachineInstr & MI )

Definition at line 7804 of file LegalizerHelper.cpp.

References llvm::MachineIRBuilder::buildInstr(), getReg(), Legalized, MI, MIRBuilder, and Opcode.

Referenced by lower().

◆ lowerDynStackAlloc()

LegalizerHelper::LegalizeResult LegalizerHelper::lowerDynStackAlloc ( MachineInstr & MI )

◆ lowerEXT()

LegalizerHelper::LegalizeResult LegalizerHelper::lowerEXT ( MachineInstr & MI )

Definition at line 6141 of file LegalizerHelper.cpp.

References llvm::MachineIRBuilder::buildInstr(), llvm::MachineIRBuilder::buildMergeLikeInstr(), llvm::MachineIRBuilder::buildUnmerge(), llvm::LLT::changeElementCount(), llvm::LLT::changeElementSize(), llvm::details::FixedOrScalableQuantity< LeafTy, ValueTy >::divideCoefficientBy(), llvm::LLT::getElementCount(), llvm::LLT::getScalarSizeInBits(), llvm::LLT::getSizeInBits(), llvm::MachineRegisterInfo::getType(), llvm::isPowerOf2_32(), Legalized, MI, MIRBuilder, and UnableToLegalize.

Referenced by lower().

◆ lowerExtract()

LegalizerHelper::LegalizeResult LegalizerHelper::lowerExtract ( MachineInstr & MI )

◆ lowerExtractInsertVectorElt()

LegalizerHelper::LegalizeResult LegalizerHelper::lowerExtractInsertVectorElt ( MachineInstr & MI )

Lower a vector extract or insert by writing the vector to a stack temporary and reloading the element or vector.

dst = G_EXTRACT_VECTOR_ELT vec, idx => stack_temp = G_FRAME_INDEX G_STORE vec, stack_temp idx = clamp(idx, vec.getNumElements()) element_ptr = G_PTR_ADD stack_temp, idx dst = G_LOAD element_ptr

Definition at line 6935 of file LegalizerHelper.cpp.

References llvm::MachineIRBuilder::buildCopy(), llvm::MachineIRBuilder::buildLoad(), llvm::MachineIRBuilder::buildMergeLikeInstr(), llvm::MachineIRBuilder::buildStore(), llvm::commonAlignment(), createStackTemporary(), llvm::dbgs(), llvm::LLT::getAddressSpace(), llvm::LLT::getElementType(), llvm::TypeSize::getFixed(), llvm::LLT::getNumElements(), llvm::LLT::getSizeInBytes(), getStackTemporaryAlignment(), llvm::MachineRegisterInfo::getType(), getVectorElementPointer(), llvm::MachinePointerInfo::getWithOffset(), Idx, llvm::LLT::isByteSized(), Legalized, LLVM_DEBUG, llvm::MIPatternMatch::m_ICst(), MI, llvm::MIPatternMatch::mi_match(), MIRBuilder, llvm::Offset, and UnableToLegalize.

Referenced by fewerElementsVectorExtractInsertVectorElt(), and lower().

◆ lowerFConstant()

◆ lowerFCopySign()

LegalizerHelper::LegalizeResult LegalizerHelper::lowerFCopySign ( MachineInstr & MI )

Definition at line 6718 of file LegalizerHelper.cpp.

References llvm::MachineIRBuilder::buildAnd(), llvm::MachineIRBuilder::buildConstant(), llvm::MachineIRBuilder::buildLShr(), llvm::MachineIRBuilder::buildOr(), llvm::MachineIRBuilder::buildShl(), llvm::MachineIRBuilder::buildTrunc(), llvm::MachineIRBuilder::buildZExt(), llvm::APInt::getLowBitsSet(), llvm::MachineInstrBuilder::getReg(), llvm::APInt::getSignMask(), Legalized, MI, and MIRBuilder.

Referenced by lower().

◆ lowerFFloor()

LegalizerHelper::LegalizeResult LegalizerHelper::lowerFFloor ( MachineInstr & MI )

Definition at line 6831 of file LegalizerHelper.cpp.

References llvm::MachineIRBuilder::buildAnd(), llvm::MachineIRBuilder::buildFAdd(), llvm::MachineIRBuilder::buildFCmp(), llvm::MachineIRBuilder::buildFConstant(), llvm::MachineIRBuilder::buildIntrinsicTrunc(), llvm::MachineIRBuilder::buildSITOFP(), llvm::LLT::changeElementSize(), llvm::CmpInst::FCMP_OLT, llvm::CmpInst::FCMP_ONE, llvm::MachineRegisterInfo::getType(), Legalized, MI, and MIRBuilder.

Referenced by lower().

◆ lowerFMad()

LegalizerHelper::LegalizeResult LegalizerHelper::lowerFMad ( MachineInstr & MI )

Definition at line 6784 of file LegalizerHelper.cpp.

References llvm::MachineIRBuilder::buildFAdd(), llvm::MachineIRBuilder::buildFMul(), llvm::MachineRegisterInfo::getType(), Legalized, MI, MIRBuilder, and llvm::Mul.

Referenced by llvm::AMDGPULegalizerInfo::legalizeFMad(), and lower().

◆ lowerFMinNumMaxNum()

LegalizerHelper::LegalizeResult LegalizerHelper::lowerFMinNumMaxNum ( MachineInstr & MI )

Definition at line 6756 of file LegalizerHelper.cpp.

References llvm::MachineIRBuilder::buildFCanonicalize(), llvm::MachineIRBuilder::buildInstr(), llvm::MachineInstr::FmNoNans, llvm::MachineInstrBuilder::getReg(), llvm::MachineRegisterInfo::getType(), llvm::isKnownNeverSNaN(), Legalized, MI, and MIRBuilder.

Referenced by llvm::AMDGPULegalizerInfo::legalizeMinNumMaxNum(), and lower().

◆ lowerFPOWI()

LegalizerHelper::LegalizeResult LegalizerHelper::lowerFPOWI ( MachineInstr & MI )

Definition at line 6679 of file LegalizerHelper.cpp.

References llvm::MachineIRBuilder::buildFPow(), llvm::MachineIRBuilder::buildSITOFP(), llvm::MachineRegisterInfo::getType(), Legalized, MI, and MIRBuilder.

Referenced by lower().

◆ lowerFPTOSI()

LegalizerHelper::LegalizeResult LegalizerHelper::lowerFPTOSI ( MachineInstr & MI )

◆ lowerFPTOUI()

LegalizerHelper::LegalizeResult LegalizerHelper::lowerFPTOUI ( MachineInstr & MI )

◆ lowerFPTRUNC()

LegalizerHelper::LegalizeResult LegalizerHelper::lowerFPTRUNC ( MachineInstr & MI )

Definition at line 6666 of file LegalizerHelper.cpp.

References llvm::LLT::getScalarType(), lowerFPTRUNC_F64_TO_F16(), MI, llvm::LLT::scalar(), and UnableToLegalize.

Referenced by lower().

◆ lowerFPTRUNC_F64_TO_F16()

LegalizerHelper::LegalizeResult LegalizerHelper::lowerFPTRUNC_F64_TO_F16 ( MachineInstr & MI )

Definition at line 6551 of file LegalizerHelper.cpp.

Referenced by lowerFPTRUNC().

◆ lowerFunnelShift()

LegalizerHelper::LegalizeResult LegalizerHelper::lowerFunnelShift ( MachineInstr & MI )

Definition at line 6118 of file LegalizerHelper.cpp.

References llvm::LegalizerInfo::getAction(), llvm::MachineRegisterInfo::getType(), and MI.

Referenced by lower().

◆ lowerFunnelShiftAsShifts()

LegalizerHelper::LegalizeResult LegalizerHelper::lowerFunnelShiftAsShifts ( MachineInstr & MI )

◆ lowerFunnelShiftWithInverse()

LegalizerHelper::LegalizeResult LegalizerHelper::lowerFunnelShiftWithInverse ( MachineInstr & MI )

◆ lowerInsert()

LegalizerHelper::LegalizeResult LegalizerHelper::lowerInsert ( MachineInstr & MI )

Definition at line 7159 of file LegalizerHelper.cpp.

Referenced by lower().

◆ lowerIntrinsicRound()

LegalizerHelper::LegalizeResult LegalizerHelper::lowerIntrinsicRound ( MachineInstr & MI )

Definition at line 6798 of file LegalizerHelper.cpp.

References llvm::MachineIRBuilder::buildFAbs(), llvm::MachineIRBuilder::buildFAdd(), llvm::MachineIRBuilder::buildFCmp(), llvm::MachineIRBuilder::buildFConstant(), llvm::MachineIRBuilder::buildFCopysign(), llvm::MachineIRBuilder::buildFSub(), llvm::MachineIRBuilder::buildIntrinsicTrunc(), llvm::MachineIRBuilder::buildSelect(), llvm::LLT::changeElementSize(), llvm::CmpInst::FCMP_OGE, llvm::MachineRegisterInfo::getType(), Legalized, MI, MIRBuilder, and X.

Referenced by lower().

◆ lowerISFPCLASS()

LegalizerHelper::LegalizeResult LegalizerHelper::lowerISFPCLASS ( MachineInstr & MI )

Definition at line 7578 of file LegalizerHelper.cpp.

References llvm::APFloat::bitcastToAPInt(), llvm::MachineIRBuilder::buildAnd(), llvm::MachineIRBuilder::buildConstant(), llvm::MachineIRBuilder::buildCopy(), llvm::MachineIRBuilder::buildICmp(), llvm::MachineIRBuilder::buildOr(), llvm::MachineIRBuilder::buildSub(), llvm::MachineIRBuilder::buildXor(), llvm::fcAllFlags, llvm::fcFinite, llvm::fcInf, llvm::fcNan, llvm::fcNegFinite, llvm::fcNegNormal, llvm::fcNegSubnormal, llvm::fcNone, llvm::fcNormal, llvm::fcPosFinite, llvm::fcPosInf, llvm::fcPosNormal, llvm::fcPosSubnormal, llvm::fcPosZero, llvm::fcQNan, llvm::fcSubnormal, llvm::fcZero, llvm::APInt::getActiveBits(), llvm::APInt::getAllOnes(), llvm::LLT::getElementCount(), llvm::getFltSemanticForLLT(), llvm::APFloat::getInf(), llvm::APFloat::getLargest(), llvm::APInt::getOneBitSet(), llvm::LLT::getScalarSizeInBits(), llvm::LLT::getScalarType(), llvm::APInt::getSignedMaxValue(), llvm::APInt::getSignMask(), llvm::CmpInst::ICMP_EQ, llvm::CmpInst::ICMP_NE, llvm::CmpInst::ICMP_UGE, llvm::CmpInst::ICMP_UGT, llvm::CmpInst::ICMP_ULT, llvm::LLT::isVector(), Legalized, MI, MIRBuilder, llvm::LLT::scalar(), llvm::APInt::shl(), and llvm::LLT::vector().

Referenced by lower().

◆ lowerLoad()

LegalizerHelper::LegalizeResult LegalizerHelper::lowerLoad ( GAnyLoad & MI )

Definition at line 3164 of file LegalizerHelper.cpp.

Referenced by lower().

◆ lowerMemCpyFamily()

LegalizerHelper::LegalizeResult LegalizerHelper::lowerMemCpyFamily	(	MachineInstr &	MI,
		unsigned	MaxLen = `0`
	)

Definition at line 8353 of file LegalizerHelper.cpp.

References assert(), llvm::getIConstantVRegValWithLookThrough(), llvm::TargetLoweringBase::getMaxStoresPerMemcpy(), Legalized, MI, shouldLowerMemFuncForSize(), and UnableToLegalize.

Referenced by lower(), and llvm::CombinerHelper::tryCombineMemCpyFamily().

◆ lowerMemcpyInline()

LegalizerHelper::LegalizeResult LegalizerHelper::lowerMemcpyInline ( MachineInstr & MI )

Definition at line 8100 of file LegalizerHelper.cpp.

References assert(), llvm::getIConstantVRegValWithLookThrough(), Legalized, and MI.

◆ lowerMergeValues()

LegalizerHelper::LegalizeResult LegalizerHelper::lowerMergeValues ( MachineInstr & MI )

◆ lowerMinMax()

LegalizerHelper::LegalizeResult LegalizerHelper::lowerMinMax ( MachineInstr & MI )

Definition at line 6704 of file LegalizerHelper.cpp.

References llvm::MachineIRBuilder::buildICmp(), llvm::MachineIRBuilder::buildSelect(), llvm::LLT::changeElementSize(), llvm::MachineRegisterInfo::getType(), Legalized, MI, minMaxToCompare(), and MIRBuilder.

Referenced by lower().

◆ lowerReadWriteRegister()

LegalizerHelper::LegalizeResult LegalizerHelper::lowerReadWriteRegister ( MachineInstr & MI )

Definition at line 7530 of file LegalizerHelper.cpp.

References llvm::MachineIRBuilder::buildCopy(), llvm::StringRef::data(), llvm::MachineIRBuilder::getMF(), llvm::TargetLowering::getRegisterByName(), llvm::MDString::getString(), llvm::MachineRegisterInfo::getType(), llvm::Register::isValid(), Legalized, MI, MIRBuilder, and UnableToLegalize.

Referenced by lower().

◆ lowerRotate()

LegalizerHelper::LegalizeResult LegalizerHelper::lowerRotate ( MachineInstr & MI )

Definition at line 6252 of file LegalizerHelper.cpp.

References llvm::LegalizerInfo::isLegalOrCustom(), MI, MIRBuilder, and llvm::MachineIRBuilder::setInstrAndDebugLoc().

Referenced by lower().

◆ lowerRotateWithReverseRotate()

LegalizerHelper::LegalizeResult LegalizerHelper::lowerRotateWithReverseRotate ( MachineInstr & MI )

Definition at line 6241 of file LegalizerHelper.cpp.

References llvm::MachineIRBuilder::buildConstant(), llvm::MachineIRBuilder::buildInstr(), llvm::MachineIRBuilder::buildSub(), Legalized, MI, and MIRBuilder.

◆ lowerSADDO_SSUBO()

LegalizerHelper::LegalizeResult LegalizerHelper::lowerSADDO_SSUBO ( MachineInstr & MI )

Definition at line 7249 of file LegalizerHelper.cpp.

References llvm::MachineIRBuilder::buildAdd(), llvm::MachineIRBuilder::buildConstant(), llvm::MachineIRBuilder::buildICmp(), llvm::MachineIRBuilder::buildSub(), llvm::MachineIRBuilder::buildXor(), llvm::CmpInst::ICMP_SGT, llvm::CmpInst::ICMP_SLT, Legalized, LHS, MI, MIRBuilder, and RHS.

Referenced by lower().

◆ lowerSelect()

LegalizerHelper::LegalizeResult LegalizerHelper::lowerSelect ( MachineInstr & MI )

Definition at line 7751 of file LegalizerHelper.cpp.

References llvm::MachineIRBuilder::buildAnd(), llvm::MachineIRBuilder::buildIntToPtr(), llvm::MachineIRBuilder::buildNot(), llvm::MachineIRBuilder::buildOr(), llvm::MachineIRBuilder::buildPtrToInt(), llvm::MachineIRBuilder::buildSExtInReg(), llvm::MachineIRBuilder::buildSExtOrTrunc(), llvm::MachineIRBuilder::buildShuffleSplat(), llvm::LLT::changeElementType(), llvm::MachineInstrBuilder::getReg(), Legalized, MI, MIRBuilder, llvm::LLT::scalar(), and UnableToLegalize.

Referenced by lower().

◆ lowerShlSat()

LegalizerHelper::LegalizeResult LegalizerHelper::lowerShlSat ( MachineInstr & MI )

◆ lowerShuffleVector()

LegalizerHelper::LegalizeResult LegalizerHelper::lowerShuffleVector ( MachineInstr & MI )

Definition at line 7007 of file LegalizerHelper.cpp.

References llvm::MachineIRBuilder::buildBuildVector(), llvm::MachineIRBuilder::buildConstant(), llvm::MachineIRBuilder::buildCopy(), llvm::MachineIRBuilder::buildExtractVectorElement(), llvm::MachineIRBuilder::buildUndef(), llvm::MachineInstrBuilder::getReg(), llvm::LLT::getScalarType(), Idx, Legalized, MI, MIRBuilder, llvm::SmallVectorTemplateBase< T, bool >::push_back(), and llvm::LLT::scalar().

Referenced by lower().

◆ lowerSITOFP()

LegalizerHelper::LegalizeResult LegalizerHelper::lowerSITOFP ( MachineInstr & MI )

Definition at line 6402 of file LegalizerHelper.cpp.

References llvm::MachineIRBuilder::buildAdd(), llvm::MachineIRBuilder::buildAShr(), llvm::MachineIRBuilder::buildConstant(), llvm::MachineIRBuilder::buildFConstant(), llvm::MachineIRBuilder::buildFNeg(), llvm::MachineIRBuilder::buildICmp(), llvm::MachineIRBuilder::buildSelect(), llvm::MachineIRBuilder::buildUITOFP(), llvm::MachineIRBuilder::buildXor(), llvm::CmpInst::ICMP_NE, Legalized, MI, MIRBuilder, llvm::LLT::scalar(), UnableToLegalize, and llvm::Xor.

Referenced by lower().

◆ lowerSMULH_UMULH()

LegalizerHelper::LegalizeResult LegalizerHelper::lowerSMULH_UMULH ( MachineInstr & MI )

Definition at line 7556 of file LegalizerHelper.cpp.

References llvm::MachineIRBuilder::buildConstant(), llvm::MachineIRBuilder::buildInstr(), llvm::MachineIRBuilder::buildMul(), llvm::MachineIRBuilder::buildTrunc(), llvm::LLT::changeElementSize(), llvm::LLT::getScalarSizeInBits(), llvm::MachineRegisterInfo::getType(), Legalized, LHS, MI, MIRBuilder, llvm::Mul, and RHS.

Referenced by lower().

◆ lowerStackRestore()

LegalizerHelper::LegalizeResult LegalizerHelper::lowerStackRestore ( MachineInstr & MI )

Definition at line 7094 of file LegalizerHelper.cpp.

References llvm::MachineIRBuilder::buildCopy(), llvm::TargetLoweringBase::getStackPointerRegisterToSaveRestore(), Legalized, MI, MIRBuilder, and UnableToLegalize.

Referenced by lower().

◆ lowerStackSave()

LegalizerHelper::LegalizeResult LegalizerHelper::lowerStackSave ( MachineInstr & MI )

Definition at line 7083 of file LegalizerHelper.cpp.

References llvm::MachineIRBuilder::buildCopy(), llvm::TargetLoweringBase::getStackPointerRegisterToSaveRestore(), Legalized, MI, MIRBuilder, and UnableToLegalize.

Referenced by lower().

◆ lowerStore()

LegalizerHelper::LegalizeResult LegalizerHelper::lowerStore ( GStore & MI )

Definition at line 3301 of file LegalizerHelper.cpp.

Referenced by lower().

◆ lowerTRUNC()

LegalizerHelper::LegalizeResult LegalizerHelper::lowerTRUNC ( MachineInstr & MI )

◆ lowerU64ToF32BitOps()

LegalizerHelper::LegalizeResult LegalizerHelper::lowerU64ToF32BitOps ( MachineInstr & MI )

◆ lowerUITOFP()

LegalizerHelper::LegalizeResult LegalizerHelper::lowerUITOFP ( MachineInstr & MI )

Definition at line 6377 of file LegalizerHelper.cpp.

References llvm::MachineIRBuilder::buildFConstant(), llvm::MachineIRBuilder::buildSelect(), Legalized, lowerU64ToF32BitOps(), MI, MIRBuilder, llvm::LLT::scalar(), and UnableToLegalize.

Referenced by lower().

◆ lowerUnmergeValues()

LegalizerHelper::LegalizeResult LegalizerHelper::lowerUnmergeValues ( MachineInstr & MI )

Definition at line 6895 of file LegalizerHelper.cpp.

References llvm::MachineIRBuilder::buildConstant(), llvm::MachineIRBuilder::buildLShr(), llvm::MachineIRBuilder::buildTrunc(), coerceToScalar(), llvm::LLT::getSizeInBits(), llvm::MachineRegisterInfo::getType(), I, llvm::LLT::isPointer(), Legalized, MI, MIRBuilder, llvm::Offset, and UnableToLegalize.

Referenced by lower().

◆ lowerVectorReduction()

LegalizerHelper::LegalizeResult LegalizerHelper::lowerVectorReduction ( MachineInstr & MI )

Definition at line 7853 of file LegalizerHelper.cpp.

References llvm::GISelChangeObserver::changedInstr(), llvm::GISelChangeObserver::changingInstr(), llvm::MCInstrInfo::get(), llvm::LLT::getSizeInBits(), llvm::MachineIRBuilder::getTII(), llvm::MachineRegisterInfo::getType(), llvm::LLT::isScalar(), Legalized, MI, MIRBuilder, Observer, and UnableToLegalize.

Referenced by lower().

◆ moreElementsVector()

LegalizerHelper::LegalizeResult LegalizerHelper::moreElementsVector	(	MachineInstr &	MI,
		unsigned	TypeIdx,
		LLT	MoreTy
	)

Legalize a vector instruction by increasing the number of vector elements involved and ignoring the added elements later.

Definition at line 4984 of file LegalizerHelper.cpp.

References llvm::MachineIRBuilder::buildDeleteTrailingVectorElements(), llvm::MachineIRBuilder::buildInstr(), llvm::MachineIRBuilder::buildShuffleSplat(), llvm::MachineIRBuilder::buildUndef(), llvm::GISelChangeObserver::changedInstr(), llvm::GISelChangeObserver::changingInstr(), llvm::LLT::fixed_vector(), llvm::LLT::getElementCount(), llvm::LLT::getElementType(), llvm::LLT::getNumElements(), llvm::LLT::getScalarType(), llvm::MachineRegisterInfo::getType(), Legalized, MI, MIRBuilder, moreElementsVectorDst(), moreElementsVectorPhi(), moreElementsVectorShuffle(), moreElementsVectorSrc(), Observer, llvm::SmallVectorTemplateBase< T, bool >::push_back(), llvm::SmallVectorBase< Size_T >::size(), and UnableToLegalize.

Referenced by legalizeInstrStep().

◆ moreElementsVectorDst()

void LegalizerHelper::moreElementsVectorDst	(	MachineInstr &	MI,
		LLT	MoreTy,
		unsigned	OpIdx
	)

Legalize a single operand OpIdx of the machine instruction MI as a Def by performing it with additional vector elements and extracting the result elements, and replacing the vreg of the operand in place.

Definition at line 1628 of file LegalizerHelper.cpp.

References llvm::MachineIRBuilder::buildDeleteTrailingVectorElements(), llvm::MachineRegisterInfo::createGenericVirtualRegister(), llvm::MachineIRBuilder::getInsertPt(), llvm::MachineIRBuilder::getMBB(), llvm::MachineOperand::getReg(), MI, MIRBuilder, llvm::MachineIRBuilder::setInsertPt(), and llvm::MachineOperand::setReg().

Referenced by equalizeVectorShuffleLengths(), llvm::AMDGPULegalizerInfo::legalizeSBufferLoad(), moreElementsVector(), moreElementsVectorPhi(), and moreElementsVectorShuffle().

◆ moreElementsVectorPhi()

LegalizerHelper::LegalizeResult LegalizerHelper::moreElementsVectorPhi	(	MachineInstr &	MI,
		unsigned	TypeIdx,
		LLT	MoreTy
	)

Definition at line 4965 of file LegalizerHelper.cpp.

References assert(), llvm::GISelChangeObserver::changedInstr(), llvm::GISelChangeObserver::changingInstr(), E, llvm::MachineBasicBlock::getFirstNonPHI(), llvm::MachineBasicBlock::getFirstTerminator(), I, Legalized, MBB, MI, MIRBuilder, moreElementsVectorDst(), moreElementsVectorSrc(), Observer, and llvm::MachineIRBuilder::setInsertPt().

Referenced by moreElementsVector().

◆ moreElementsVectorShuffle()

LegalizerHelper::LegalizeResult LegalizerHelper::moreElementsVectorShuffle	(	MachineInstr &	MI,
		unsigned	TypeIdx,
		LLT	MoreTy
	)

Definition at line 5224 of file LegalizerHelper.cpp.

References llvm::MachineIRBuilder::buildShuffleVector(), equalizeVectorShuffleLengths(), llvm::LLT::getNumElements(), I, Idx, Legalized, MI, MIRBuilder, moreElementsVectorDst(), moreElementsVectorSrc(), llvm::SmallVectorTemplateBase< T, bool >::push_back(), llvm::MachineIRBuilder::setInstrAndDebugLoc(), and UnableToLegalize.

Referenced by moreElementsVector().

◆ moreElementsVectorSrc()

void LegalizerHelper::moreElementsVectorSrc	(	MachineInstr &	MI,
		LLT	MoreTy,
		unsigned	OpIdx
	)

Legalize a single operand OpIdx of the machine instruction MI as a Use by producing a vector with undefined high elements, extracting the original vector type, and replacing the vreg of the operand in place.

Definition at line 1638 of file LegalizerHelper.cpp.

References llvm::MachineIRBuilder::buildPadVectorWithUndefElements(), llvm::MachineInstrBuilder::getReg(), MI, MIRBuilder, and llvm::MachineOperand::setReg().

Referenced by moreElementsVector(), moreElementsVectorPhi(), and moreElementsVectorShuffle().

◆ narrowScalar()

LegalizerHelper::LegalizeResult LegalizerHelper::narrowScalar	(	MachineInstr &	MI,
		unsigned	TypeIdx,
		LLT	NarrowTy
	)

Legalize an instruction by reducing the width of the underlying scalar type.

Definition at line 1058 of file LegalizerHelper.cpp.

Referenced by llvm::AMDGPURegisterBankInfo::applyMappingImpl(), llvm::MipsRegisterBankInfo::applyMappingImpl(), llvm::AMDGPURegisterBankInfo::applyMappingLoad(), and legalizeInstrStep().

◆ narrowScalarAddSub()

LegalizerHelper::LegalizeResult LegalizerHelper::narrowScalarAddSub	(	MachineInstr &	MI,
		unsigned	TypeIdx,
		LLT	NarrowTy
	)

Definition at line 5330 of file LegalizerHelper.cpp.

References llvm::MachineIRBuilder::buildInstr(), llvm::MachineRegisterInfo::createGenericVirtualRegister(), E, llvm::MachineRegisterInfo::getType(), I, llvm::LLT::isVector(), Legalized, llvm_unreachable, MI, MIRBuilder, Opcode, llvm::SmallVectorTemplateBase< T, bool >::push_back(), llvm::SmallVectorImpl< T >::reserve(), llvm::LLT::scalar(), llvm::SmallVectorBase< Size_T >::size(), and UnableToLegalize.

Referenced by narrowScalar().

◆ narrowScalarBasic()

LegalizerHelper::LegalizeResult LegalizerHelper::narrowScalarBasic	(	MachineInstr &	MI,
		unsigned	TypeIdx,
		LLT	Ty
	)

Definition at line 5630 of file LegalizerHelper.cpp.

References assert(), llvm::MachineIRBuilder::buildInstr(), E, llvm::MachineRegisterInfo::getType(), I, Legalized, llvm_unreachable, MI, MIRBuilder, llvm::SmallVectorTemplateBase< T, bool >::push_back(), llvm::SmallVectorBase< Size_T >::size(), and UnableToLegalize.

Referenced by narrowScalar().

◆ narrowScalarCTLZ()

LegalizerHelper::LegalizeResult LegalizerHelper::narrowScalarCTLZ	(	MachineInstr &	MI,
		unsigned	TypeIdx,
		LLT	Ty
	)

Definition at line 5738 of file LegalizerHelper.cpp.

References B, llvm::LLT::getSizeInBits(), llvm::CmpInst::ICMP_EQ, llvm::LLT::isScalar(), Legalized, MI, MIRBuilder, llvm::LLT::scalar(), and UnableToLegalize.

Referenced by narrowScalar().

◆ narrowScalarCTPOP()

LegalizerHelper::LegalizeResult LegalizerHelper::narrowScalarCTPOP	(	MachineInstr &	MI,
		unsigned	TypeIdx,
		LLT	Ty
	)

Definition at line 5804 of file LegalizerHelper.cpp.

References llvm::MachineIRBuilder::buildAdd(), llvm::MachineIRBuilder::buildCTPOP(), llvm::MachineIRBuilder::buildUnmerge(), llvm::LLT::getSizeInBits(), llvm::LLT::isScalar(), Legalized, MI, MIRBuilder, and UnableToLegalize.

Referenced by narrowScalar().

◆ narrowScalarCTTZ()

LegalizerHelper::LegalizeResult LegalizerHelper::narrowScalarCTTZ	(	MachineInstr &	MI,
		unsigned	TypeIdx,
		LLT	Ty
	)

Definition at line 5771 of file LegalizerHelper.cpp.

References B, llvm::LLT::getSizeInBits(), llvm::CmpInst::ICMP_EQ, llvm::LLT::isScalar(), Legalized, MI, MIRBuilder, llvm::LLT::scalar(), and UnableToLegalize.

Referenced by narrowScalar().

◆ narrowScalarDst()

void LegalizerHelper::narrowScalarDst	(	MachineInstr &	MI,
		LLT	NarrowTy,
		unsigned	OpIdx,
		unsigned	ExtOpcode
	)

Definition at line 1619 of file LegalizerHelper.cpp.

References llvm::MachineIRBuilder::buildInstr(), llvm::MachineRegisterInfo::createGenericVirtualRegister(), llvm::MachineIRBuilder::getInsertPt(), llvm::MachineIRBuilder::getMBB(), MI, MIRBuilder, llvm::MachineIRBuilder::setInsertPt(), and llvm::MachineOperand::setReg().

Referenced by narrowScalar(), and narrowScalarFPTOI().

◆ narrowScalarExt()

LegalizerHelper::LegalizeResult LegalizerHelper::narrowScalarExt	(	MachineInstr &	MI,
		unsigned	TypeIdx,
		LLT	Ty
	)

Definition at line 5671 of file LegalizerHelper.cpp.

References llvm::MachineRegisterInfo::getType(), llvm::LLT::isVector(), Legalized, MI, and UnableToLegalize.

Referenced by narrowScalar().

◆ narrowScalarExtract()

LegalizerHelper::LegalizeResult LegalizerHelper::narrowScalarExtract	(	MachineInstr &	MI,
		unsigned	TypeIdx,
		LLT	Ty
	)

Definition at line 5479 of file LegalizerHelper.cpp.

References llvm::MachineIRBuilder::buildBuildVector(), llvm::MachineIRBuilder::buildCopy(), llvm::MachineIRBuilder::buildExtract(), llvm::MachineIRBuilder::buildMergeLikeInstr(), llvm::MachineRegisterInfo::createGenericVirtualRegister(), llvm::LLT::getSizeInBits(), llvm::MachineRegisterInfo::getType(), llvm::LLT::isVector(), Legalized, MI, MIRBuilder, llvm::SmallVectorTemplateBase< T, bool >::push_back(), llvm::LLT::scalar(), llvm::SmallVectorBase< Size_T >::size(), and UnableToLegalize.

Referenced by narrowScalar().

◆ narrowScalarFLDEXP()

LegalizerHelper::LegalizeResult LegalizerHelper::narrowScalarFLDEXP	(	MachineInstr &	MI,
		unsigned	TypeIdx,
		LLT	Ty
	)

Definition at line 5827 of file LegalizerHelper.cpp.

References B, llvm::GISelChangeObserver::changedInstr(), llvm::GISelChangeObserver::changingInstr(), llvm::LLT::getScalarSizeInBits(), llvm::MachineRegisterInfo::getType(), Legalized, llvm::maxIntN(), MI, llvm::minIntN(), MIRBuilder, Observer, and UnableToLegalize.

Referenced by narrowScalar().

◆ narrowScalarFPTOI()

LegalizerHelper::LegalizeResult LegalizerHelper::narrowScalarFPTOI	(	MachineInstr &	MI,
		unsigned	TypeIdx,
		LLT	Ty
	)

Definition at line 5454 of file LegalizerHelper.cpp.

References llvm::GISelChangeObserver::changedInstr(), llvm::GISelChangeObserver::changingInstr(), llvm::LLT::getScalarSizeInBits(), llvm::LLT::getScalarType(), llvm::MachineRegisterInfo::getType(), Legalized, MI, narrowScalarDst(), Observer, llvm::LLT::scalar(), and UnableToLegalize.

Referenced by narrowScalar().

◆ narrowScalarInsert()

LegalizerHelper::LegalizeResult LegalizerHelper::narrowScalarInsert	(	MachineInstr &	MI,
		unsigned	TypeIdx,
		LLT	Ty
	)

◆ narrowScalarMul()

LegalizerHelper::LegalizeResult LegalizerHelper::narrowScalarMul	(	MachineInstr &	MI,
		LLT	Ty
	)

Definition at line 5424 of file LegalizerHelper.cpp.

References llvm::MachineIRBuilder::buildMergeLikeInstr(), llvm::LLT::getSizeInBits(), llvm::MachineRegisterInfo::getType(), llvm::LLT::isVector(), Legalized, MI, MIRBuilder, Size, and UnableToLegalize.

Referenced by narrowScalar().

◆ narrowScalarSelect()

LegalizerHelper::LegalizeResult LegalizerHelper::narrowScalarSelect	(	MachineInstr &	MI,
		unsigned	TypeIdx,
		LLT	Ty
	)

Definition at line 5692 of file LegalizerHelper.cpp.

References llvm::MachineIRBuilder::buildSelect(), E, llvm::MachineRegisterInfo::getType(), I, llvm::LLT::isVector(), Legalized, llvm_unreachable, MI, MIRBuilder, llvm::SmallVectorTemplateBase< T, bool >::push_back(), Select, llvm::SmallVectorBase< Size_T >::size(), and UnableToLegalize.

Referenced by narrowScalar().

◆ narrowScalarShift()

LegalizerHelper::LegalizeResult LegalizerHelper::narrowScalarShift	(	MachineInstr &	MI,
		unsigned	TypeIdx,
		LLT	Ty
	)

Definition at line 4856 of file LegalizerHelper.cpp.

Referenced by narrowScalar().

◆ narrowScalarShiftByConstant()

LegalizerHelper::LegalizeResult LegalizerHelper::narrowScalarShiftByConstant	(	MachineInstr &	MI,
		const APInt &	Amt,
		LLT	HalfTy,
		LLT	ShiftAmtTy
	)

Definition at line 4767 of file LegalizerHelper.cpp.

References llvm::MachineIRBuilder::buildAShr(), llvm::MachineIRBuilder::buildConstant(), llvm::MachineIRBuilder::buildLShr(), llvm::MachineIRBuilder::buildMergeLikeInstr(), llvm::MachineIRBuilder::buildOr(), llvm::MachineIRBuilder::buildShl(), llvm::MachineIRBuilder::buildUnmerge(), llvm::MachineRegisterInfo::createGenericVirtualRegister(), llvm::LLT::getSizeInBits(), llvm::Hi, llvm::APInt::isZero(), Legalized, llvm::Lo, MI, MIRBuilder, and llvm::APInt::ugt().

Referenced by narrowScalarShift().

◆ narrowScalarSrc()

void LegalizerHelper::narrowScalarSrc	(	MachineInstr &	MI,
		LLT	NarrowTy,
		unsigned	OpIdx
	)

Legalize a single operand OpIdx of the machine instruction MI as a Use by truncating the operand's type to NarrowTy using G_TRUNC, and replacing the vreg of the operand in place.

Definition at line 1603 of file LegalizerHelper.cpp.

References llvm::MachineIRBuilder::buildTrunc(), MI, MIRBuilder, and llvm::MachineOperand::setReg().

Referenced by narrowScalar(), and narrowScalarShift().

◆ reduceLoadStoreWidth()

LegalizerHelper::LegalizeResult LegalizerHelper::reduceLoadStoreWidth	(	GLoadStore &	MI,
		unsigned	TypeIdx,
		LLT	NarrowTy
	)

Definition at line 4267 of file LegalizerHelper.cpp.

References llvm::MachineIRBuilder::buildLoad(), llvm::MachineIRBuilder::buildStore(), llvm::MachineRegisterInfo::createGenericVirtualRegister(), llvm::dbgs(), E, llvm::MachineInstr::eraseFromParent(), llvm::MachineIRBuilder::getDataLayout(), llvm::MachineFunction::getMachineMemOperand(), llvm::GMemOperation::getMemSize(), llvm::MachineIRBuilder::getMF(), llvm::GMemOperation::getMMO(), getNarrowTypeBreakDown(), llvm::GLoadStore::getPointerReg(), llvm::GenericMachineInstr::getReg(), llvm::LLT::getSizeInBits(), llvm::MachineRegisterInfo::getType(), Idx, llvm::GMemOperation::isAtomic(), llvm::DataLayout::isBigEndian(), isBigEndian(), llvm::LLT::isValid(), Legalized, LLVM_DEBUG, llvm::MachineIRBuilder::materializePtrAdd(), MIRBuilder, llvm::Offset, llvm::LLT::scalar(), llvm::SmallVectorBase< Size_T >::size(), and UnableToLegalize.

Referenced by llvm::AMDGPURegisterBankInfo::applyMappingLoad(), fewerElementsVector(), lowerLoad(), lowerStore(), and narrowScalar().

◆ widenScalar()

LegalizerHelper::LegalizeResult LegalizerHelper::widenScalar	(	MachineInstr &	MI,
		unsigned	TypeIdx,
		LLT	WideTy
	)

Legalize an instruction by performing the operation on a wider scalar type (for example a 16-bit addition can be safely performed at 32-bits precision, ignoring the unused bits).

Definition at line 2189 of file LegalizerHelper.cpp.

Referenced by llvm::AMDGPURegisterBankInfo::applyMappingImpl(), and legalizeInstrStep().

◆ widenScalarDst()

void LegalizerHelper::widenScalarDst	(	MachineInstr &	MI,
		LLT	WideTy,
		unsigned	OpIdx = `0`,
		unsigned	TruncOpcode = `TargetOpcode::G_TRUNC`
	)

Legalize a single operand OpIdx of the machine instruction MI as a Def by extending the operand's type to WideTy and truncating it back with the TruncOpcode, and replacing the vreg of the operand in place.

Definition at line 1610 of file LegalizerHelper.cpp.

References llvm::MachineIRBuilder::buildInstr(), llvm::MachineRegisterInfo::createGenericVirtualRegister(), llvm::MachineIRBuilder::getInsertPt(), llvm::MachineIRBuilder::getMBB(), MI, MIRBuilder, llvm::MachineIRBuilder::setInsertPt(), and llvm::MachineOperand::setReg().

Referenced by llvm::AMDGPULegalizerInfo::legalizeSBufferLoad(), and widenScalar().

◆ widenScalarSrc()

void LegalizerHelper::widenScalarSrc	(	MachineInstr &	MI,
		LLT	WideTy,
		unsigned	OpIdx,
		unsigned	ExtOpcode
	)

Legalize a single operand OpIdx of the machine instruction MI as a Use by extending the operand's type to WideTy using the specified ExtOpcode for the extension instruction, and replacing the vreg of the operand in place.

Definition at line 1596 of file LegalizerHelper.cpp.

References llvm::MachineIRBuilder::buildInstr(), MI, MIRBuilder, and llvm::MachineOperand::setReg().

Referenced by widenScalar().

Member Data Documentation

◆ MIRBuilder

MachineIRBuilder& llvm::LegalizerHelper::MIRBuilder

Expose MIRBuilder so clients can set their own RecordInsertInstruction functions.

Definition at line 51 of file LegalizerHelper.h.

◆ Observer

GISelChangeObserver& llvm::LegalizerHelper::Observer

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

include/llvm/CodeGen/GlobalISel/LegalizerHelper.h
lib/CodeGen/GlobalISel/LegalizerHelper.cpp

Public Types

Public Member Functions

Public Attributes

Detailed Description

Member Enumeration Documentation

◆ LegalizeResult

Constructor & Destructor Documentation

◆ LegalizerHelper() [1/2]

◆ LegalizerHelper() [2/2]

Member Function Documentation

◆ bitcast()

◆ bitcastDst()

◆ bitcastExtractVectorElt()

◆ bitcastInsertVectorElt()

◆ bitcastSrc()

◆ coerceToScalar()

◆ createStackTemporary()

◆ equalizeVectorShuffleLengths()

◆ fewerElementsVector()

◆ fewerElementsVectorExtractInsertVectorElt()

◆ fewerElementsVectorMerge()

◆ fewerElementsVectorMultiEltType()

◆ fewerElementsVectorPhi()

◆ fewerElementsVectorReductions()

◆ fewerElementsVectorShuffle()

◆ fewerElementsVectorUnmergeValues()

◆ getKnownBits()

◆ getLegalizerInfo()

◆ getStackTemporaryAlignment()

◆ getTargetLowering()

◆ getVectorElementPointer()

◆ legalizeInstrStep()

◆ libcall()

◆ lower()

◆ lowerAbsToAddXor()

◆ lowerAbsToMaxNeg()

◆ lowerAddSubSatToAddoSubo()

◆ lowerAddSubSatToMinMax()

◆ lowerBitcast()

◆ lowerBitCount()

◆ lowerBitreverse()

◆ lowerBswap()

◆ lowerDIVREM()

◆ lowerDynStackAlloc()

◆ lowerEXT()

◆ lowerExtract()

◆ lowerExtractInsertVectorElt()

◆ lowerFConstant()

◆ lowerFCopySign()

◆ lowerFFloor()

◆ lowerFMad()

◆ lowerFMinNumMaxNum()

◆ lowerFPOWI()

◆ lowerFPTOSI()

◆ lowerFPTOUI()

◆ lowerFPTRUNC()

◆ lowerFPTRUNC_F64_TO_F16()

◆ lowerFunnelShift()

◆ lowerFunnelShiftAsShifts()

◆ lowerFunnelShiftWithInverse()

◆ lowerInsert()

◆ lowerIntrinsicRound()

◆ lowerISFPCLASS()

◆ lowerLoad()

◆ lowerMemCpyFamily()

◆ lowerMemcpyInline()

◆ lowerMergeValues()

◆ lowerMinMax()

◆ lowerReadWriteRegister()

◆ lowerRotate()

◆ lowerRotateWithReverseRotate()

◆ lowerSADDO_SSUBO()

◆ lowerSelect()

◆ lowerShlSat()

◆ lowerShuffleVector()

◆ lowerSITOFP()

◆ lowerSMULH_UMULH()

◆ lowerStackRestore()

◆ lowerStackSave()

◆ lowerStore()