LLVM 19.0.0git
Public Types | Public Member Functions | Public Attributes | List of all members
llvm::LegalizerHelper Class Reference

#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 fewerElementsVectorSeqReductions (MachineInstr &MI, unsigned TypeIdx, LLT NarrowTy)
 
LegalizeResult fewerElementsBitcast (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 lowerConstant (MachineInstr &MI)
 
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)
 
Register getDynStackAllocTargetPtr (Register SPReg, Register AllocSize, Align Alignment, LLT PtrTy)
 
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 lowerAbsToCNeg (MachineInstr &MI)
 
LegalizeResult lowerVectorReduction (MachineInstr &MI)
 
LegalizeResult lowerMemcpyInline (MachineInstr &MI)
 
LegalizeResult lowerMemCpyFamily (MachineInstr &MI, unsigned MaxLen=0)
 
LegalizeResult lowerVAArg (MachineInstr &MI)
 

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 103 of file LegalizerHelper.cpp.

◆ LegalizerHelper() [2/2]

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

Definition at line 110 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 3619 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 1815 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 3187 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 3323 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 1810 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 1740 of file LegalizerHelper.cpp.

References assert(), llvm::MachineIRBuilder::buildBitcast(), llvm::MachineIRBuilder::buildPtrToInt(), DL, llvm::LLT::getAddressSpace(), llvm::MachineIRBuilder::getDataLayout(), llvm::MachineInstrBuilder::getReg(), llvm::LLT::getSizeInBits(), llvm::MachineRegisterInfo::getType(), llvm::LLT::isPointer(), llvm::LLT::isPointerVector(), 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 4031 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 5589 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().

◆ fewerElementsBitcast()

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

Definition at line 4769 of file LegalizerHelper.cpp.

References assert(), llvm::MachineIRBuilder::buildBitcast(), llvm::MachineIRBuilder::buildMergeLikeInstr(), llvm::LLT::fixed_vector(), llvm::MachineInstrBuilder::getReg(), llvm::LLT::getScalarSizeInBits(), llvm::LLT::getSizeInBits(), Legalized, MI, MIRBuilder, llvm::SmallVectorTemplateBase< T, bool >::push_back(), llvm::SmallVectorBase< Size_T >::size(), and UnableToLegalize.

Referenced by fewerElementsVector().

◆ 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 4610 of file LegalizerHelper.cpp.

References assert(), fewerElementsBitcast(), fewerElementsVectorExtractInsertVectorElt(), fewerElementsVectorMerge(), fewerElementsVectorMultiEltType(), fewerElementsVectorPhi(), fewerElementsVectorReductions(), fewerElementsVectorSeqReductions(), 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 4441 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 4355 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 4182 of file LegalizerHelper.cpp.

References assert(), broadcastSrcOp(), llvm::MachineIRBuilder::buildInstr(), llvm::MachineIRBuilder::buildMergeLikeInstr(), llvm::extractVectorParts(), 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 4253 of file LegalizerHelper.cpp.

References llvm::MachineIRBuilder::buildInstr(), llvm::MachineIRBuilder::buildMergeLikeInstr(), llvm::MachineRegisterInfo::createGenericVirtualRegister(), llvm::extractVectorParts(), llvm::MachineBasicBlock::getFirstNonPHI(), llvm::MachineBasicBlock::getFirstTerminatorForward(), llvm::LLT::getNumElements(), llvm::MachineRegisterInfo::getType(), Legalized, makeDstOps(), MBB, 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 
)

Definition at line 4937 of file LegalizerHelper.cpp.

References assert(), llvm::MachineIRBuilder::buildCopy(), llvm::MachineIRBuilder::buildInstr(), llvm::SmallVectorImpl< T >::clear(), llvm::SmallVectorImpl< T >::emplace_back(), llvm::extractParts(), llvm::LLT::getNumElements(), getReg(), llvm::MachineInstrBuilder::getReg(), Idx, llvm::isPowerOf2_32(), llvm::LLT::isScalar(), llvm::LLT::isVector(), Legalized, MI, MIRBuilder, llvm::SmallVectorTemplateBase< T, bool >::push_back(), llvm::SmallVectorBase< Size_T >::size(), and UnableToLegalize.

Referenced by fewerElementsVector().

◆ fewerElementsVectorSeqReductions()

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

Definition at line 5024 of file LegalizerHelper.cpp.

References assert(), llvm::MachineIRBuilder::buildCopy(), llvm::MachineIRBuilder::buildInstr(), llvm::extractParts(), llvm::LLT::getNumElements(), llvm::MachineInstrBuilder::getReg(), llvm::LLT::isScalar(), Legalized, MI, MIRBuilder, and UnableToLegalize.

Referenced by fewerElementsVector().

◆ fewerElementsVectorShuffle()

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

Definition at line 4799 of file LegalizerHelper.cpp.

References assert(), llvm::MachineIRBuilder::buildBuildVector(), llvm::MachineIRBuilder::buildConcatVectors(), llvm::MachineIRBuilder::buildConstant(), llvm::MachineIRBuilder::buildShuffleVector(), llvm::MachineIRBuilder::buildUndef(), llvm::LLT::changeElementCount(), llvm::SmallVectorImpl< T >::clear(), llvm::extractParts(), llvm::LLT::getElementType(), llvm::LLT::getNumElements(), getReg(), llvm::MachineInstrBuilder::getReg(), llvm::Hi, High, Idx, llvm::isPowerOf2_32(), Legalized, llvm::Lo, MI, MIRBuilder, llvm::SmallVectorTemplateBase< T, bool >::push_back(), llvm::LLT::scalar(), and UnableToLegalize.

Referenced by fewerElementsVector().

◆ fewerElementsVectorUnmergeValues()

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

Definition at line 4306 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().

◆ getDynStackAllocTargetPtr()

Register LegalizerHelper::getDynStackAllocTargetPtr ( Register  SPReg,
Register  AllocSize,
Align  Alignment,
LLT  PtrTy 
)

Definition at line 7499 of file LegalizerHelper.cpp.

References llvm::Alloc, llvm::MachineIRBuilder::buildAnd(), llvm::MachineIRBuilder::buildCast(), llvm::MachineIRBuilder::buildConstant(), llvm::MachineIRBuilder::buildCopy(), llvm::MachineIRBuilder::buildSub(), llvm::MachineInstrBuilder::getReg(), llvm::LLT::getSizeInBits(), MIRBuilder, llvm::APInt::negate(), llvm::LLT::scalar(), and llvm::Align::value().

Referenced by lowerDynStackAlloc().

◆ 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 4020 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 4065 of file LegalizerHelper.cpp.

References assert(), llvm::MachineIRBuilder::buildConstant(), llvm::MachineIRBuilder::buildMul(), llvm::MachineIRBuilder::buildPtrAdd(), llvm::MachineIRBuilder::buildSExtOrTrunc(), llvm::LLT::changeElementSize(), clampVectorIndex(), DL, llvm::LLT::getAddressSpace(), llvm::MachineIRBuilder::getDataLayout(), llvm::LLT::getElementType(), llvm::MachineInstrBuilder::getReg(), llvm::LLT::getSizeInBits(), llvm::MachineRegisterInfo::getType(), MIRBuilder, and llvm::Mul.

Referenced by lowerExtractInsertVectorElt(), and llvm::CombinerHelper::matchCombineExtractedVectorLoad().

◆ 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 117 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 1008 of file LegalizerHelper.cpp.

References conversionLibcall(), createAtomicLibcall(), llvm::createLibcall(), 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(), getReg(), getRTLibDesc(), llvm::LLT::getSizeInBits(), llvm::MachineRegisterInfo::getType(), Legalized, llvm::LegalizeActions::Libcall, 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 3696 of file LegalizerHelper.cpp.

References Addr, assert(), llvm::MachineIRBuilder::buildAdd(), llvm::MachineIRBuilder::buildAnd(), llvm::MachineIRBuilder::buildAShr(), llvm::MachineIRBuilder::buildAtomicCmpXchg(), llvm::MachineIRBuilder::buildConstant(), llvm::MachineIRBuilder::buildCopy(), llvm::MachineIRBuilder::buildFAdd(), llvm::MachineIRBuilder::buildFNeg(), llvm::MachineIRBuilder::buildICmp(), llvm::MachineIRBuilder::buildInstr(), llvm::MachineIRBuilder::buildMul(), llvm::MachineIRBuilder::buildOr(), llvm::MachineIRBuilder::buildShl(), llvm::MachineIRBuilder::buildStrictFAdd(), llvm::MachineIRBuilder::buildSub(), llvm::MachineIRBuilder::buildXor(), llvm::MachineIRBuilder::buildZExt(), llvm::GISelChangeObserver::changedInstr(), llvm::GISelChangeObserver::changingInstr(), llvm::MachineRegisterInfo::cloneVirtualRegister(), llvm::MachineRegisterInfo::createGenericVirtualRegister(), llvm::MachineIRBuilder::getInsertPt(), llvm::MachineIRBuilder::getMBB(), llvm::LLT::getScalarSizeInBits(), llvm::APInt::getSignMask(), llvm::LLT::getSizeInBits(), llvm::MachineIRBuilder::getTII(), llvm::MachineRegisterInfo::getType(), GISEL_VECREDUCE_CASES_NONSEQ, llvm::CmpInst::ICMP_EQ, llvm::CmpInst::ICMP_NE, llvm::CmpInst::ICMP_UGT, llvm::CmpInst::ICMP_ULT, llvm::LegalizerInfo::isLegalOrCustom(), llvm::LLT::isVector(), Legalized, LHS, lowerAbsToAddXor(), lowerAddSubSatToAddoSubo(), lowerAddSubSatToMinMax(), lowerBitcast(), lowerBitCount(), lowerBitreverse(), lowerBswap(), lowerDIVREM(), lowerDynStackAlloc(), lowerEXT(), lowerExtract(), lowerExtractInsertVectorElt(), lowerFConstant(), lowerFCopySign(), lowerFFloor(), lowerFMad(), lowerFMinNumMaxNum(), lowerFPOWI(), lowerFPTOSI(), lowerFPTOUI(), lowerFPTRUNC(), lowerFunnelShift(), lowerInsert(), lowerIntrinsicRound(), lowerISFPCLASS(), lowerLoad(), lowerMemCpyFamily(), lowerMergeValues(), lowerMinMax(), lowerReadWriteRegister(), lowerRotate(), lowerSADDO_SSUBO(), lowerSelect(), lowerShlSat(), lowerShuffleVector(), lowerSITOFP(), lowerSMULH_UMULH(), lowerStackRestore(), lowerStackSave(), lowerStore(), lowerTRUNC(), lowerUITOFP(), lowerUnmergeValues(), lowerVAArg(), lowerVectorReduction(), MI, MIRBuilder, Observer, RHS, llvm::MachineIRBuilder::setInsertPt(), TII, and UnableToLegalize.

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

◆ lowerAbsToAddXor()

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

Definition at line 8294 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().

◆ lowerAbsToCNeg()

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

Definition at line 8326 of file LegalizerHelper.cpp.

References llvm::MachineIRBuilder::buildConstant(), llvm::MachineIRBuilder::buildICmp(), llvm::MachineIRBuilder::buildSelect(), llvm::MachineIRBuilder::buildSub(), llvm::MachineInstrBuilder::getReg(), llvm::MachineRegisterInfo::getType(), llvm::CmpInst::ICMP_SGT, Legalized, MI, MIRBuilder, and llvm::LLT::scalar().

Referenced by llvm::AArch64LegalizerInfo::legalizeCustom().

◆ lowerAbsToMaxNeg()

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

Definition at line 8311 of file LegalizerHelper.cpp.

References llvm::MachineIRBuilder::buildConstant(), llvm::MachineIRBuilder::buildSMax(), llvm::MachineIRBuilder::buildSub(), 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 7826 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)

Definition at line 7751 of file LegalizerHelper.cpp.

References llvm::MachineIRBuilder::buildConstant(), llvm::MachineIRBuilder::buildInstr(), llvm::MachineIRBuilder::buildNot(), llvm::MachineIRBuilder::buildSMax(), llvm::MachineIRBuilder::buildSMin(), llvm::MachineIRBuilder::buildSub(), llvm::MachineIRBuilder::buildUMin(), llvm::MachineInstrBuilder::getReg(), llvm::LLT::getScalarSizeInBits(), llvm::APInt::getSignedMaxValue(), llvm::APInt::getSignedMinValue(), llvm::MachineRegisterInfo::getType(), llvm::Hi, Legalized, LHS, llvm_unreachable, llvm::Lo, MI, MIRBuilder, and RHS.

Referenced by lower().

◆ lowerBitcast()

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

Definition at line 3095 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 6292 of file LegalizerHelper.cpp.

References llvm::LegalizeActionStep::Action, assert(), B, llvm::MachineIRBuilder::buildAdd(), llvm::MachineIRBuilder::buildAnd(), llvm::MachineIRBuilder::buildConstant(), llvm::MachineIRBuilder::buildCTLZ(), llvm::MachineIRBuilder::buildCTLZ_ZERO_UNDEF(), llvm::MachineIRBuilder::buildCTPOP(), llvm::MachineIRBuilder::buildCTTZ_ZERO_UNDEF(), llvm::MachineIRBuilder::buildICmp(), llvm::MachineIRBuilder::buildLShr(), llvm::MachineIRBuilder::buildOr(), llvm::MachineIRBuilder::buildSelect(), llvm::MachineIRBuilder::buildSub(), llvm::MachineIRBuilder::buildXor(), llvm::GISelChangeObserver::changedInstr(), llvm::LLT::changeElementSize(), llvm::GISelChangeObserver::changingInstr(), llvm::LegalizeActions::Custom, llvm::LegalizerInfo::getAction(), llvm::LLT::getSizeInBits(), llvm::APInt::getSplat(), llvm::MachineIRBuilder::getTII(), llvm::MachineRegisterInfo::getType(), llvm::CmpInst::ICMP_EQ, llvm::IRSimilarity::Legal, Legalized, llvm::LegalizeActions::Libcall, MI, MIRBuilder, Observer, llvm::PowerOf2Ceil(), Size, TII, UnableToLegalize, and llvm::LegalizeActions::WidenScalar.

Referenced by lower().

◆ lowerBitreverse()

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

Definition at line 7968 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 7923 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().

◆ lowerConstant()

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

Definition at line 3073 of file LegalizerHelper.cpp.

References emitLoadFromConstantPool(), llvm::MachineOperand::getCImm(), Legalized, MI, and MIRBuilder.

Referenced by llvm::RISCVLegalizerInfo::legalizeCustom().

◆ lowerDIVREM()

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

Definition at line 8277 of file LegalizerHelper.cpp.

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

Referenced by lower().

◆ lowerDynStackAlloc()

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

Definition at line 7523 of file LegalizerHelper.cpp.

References llvm::assumeAligned(), llvm::MachineIRBuilder::buildCopy(), getDynStackAllocTargetPtr(), llvm::TargetLoweringBase::getStackPointerRegisterToSaveRestore(), llvm::MachineRegisterInfo::getType(), Legalized, MI, MIRBuilder, llvm::TargetFrameLowering::StackGrowsUp, and UnableToLegalize.

Referenced by lower().

◆ lowerEXT()

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

Definition at line 6595 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)

Definition at line 7568 of file LegalizerHelper.cpp.

References llvm::MachineIRBuilder::buildBitcast(), llvm::MachineIRBuilder::buildConstant(), llvm::MachineIRBuilder::buildCopy(), llvm::MachineIRBuilder::buildLShr(), llvm::MachineIRBuilder::buildMergeLikeInstr(), llvm::MachineIRBuilder::buildTrunc(), llvm::MachineIRBuilder::buildUnmerge(), llvm::LLT::getElementType(), llvm::MachineInstrBuilder::getReg(), llvm::LLT::getSizeInBits(), Idx, llvm::LLT::isScalar(), llvm::LLT::isVector(), Legalized, MI, MIRBuilder, llvm::Offset, llvm::SmallVectorTemplateBase< T, bool >::push_back(), llvm::LLT::scalar(), llvm::SmallVectorBase< Size_T >::size(), and UnableToLegalize.

Referenced by lower().

◆ 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 7389 of file LegalizerHelper.cpp.

References llvm::MachineIRBuilder::buildCopy(), llvm::MachineIRBuilder::buildLoad(), llvm::MachineIRBuilder::buildMergeLikeInstr(), llvm::MachineIRBuilder::buildStore(), llvm::commonAlignment(), createStackTemporary(), llvm::dbgs(), llvm::extractParts(), 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()

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

Definition at line 3084 of file LegalizerHelper.cpp.

References emitLoadFromConstantPool(), llvm::MachineOperand::getFPImm(), Legalized, MI, and MIRBuilder.

Referenced by lower().

◆ lowerFCopySign()

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

Definition at line 7172 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 7285 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 7238 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 7210 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 7133 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)

Definition at line 6939 of file LegalizerHelper.cpp.

References llvm::MachineIRBuilder::buildAnd(), llvm::MachineIRBuilder::buildAShr(), llvm::MachineIRBuilder::buildConstant(), llvm::MachineIRBuilder::buildICmp(), llvm::MachineIRBuilder::buildLShr(), llvm::MachineIRBuilder::buildOr(), llvm::MachineIRBuilder::buildSelect(), llvm::MachineIRBuilder::buildSExt(), llvm::MachineIRBuilder::buildShl(), llvm::MachineIRBuilder::buildSub(), llvm::MachineIRBuilder::buildXor(), llvm::MachineIRBuilder::buildZExt(), llvm::Exponent, llvm::LLT::getScalarSizeInBits(), llvm::LLT::getScalarType(), llvm::APInt::getSignMask(), llvm::CmpInst::ICMP_SGT, llvm::CmpInst::ICMP_SLT, Legalized, MI, MIRBuilder, S1, S32, S64, llvm::LLT::scalar(), and UnableToLegalize.

Referenced by lower().

◆ lowerFPTOUI()

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

Definition at line 6899 of file LegalizerHelper.cpp.

References llvm::MachineIRBuilder::buildConstant(), llvm::MachineIRBuilder::buildFCmp(), llvm::MachineIRBuilder::buildFConstant(), llvm::MachineIRBuilder::buildFPTOSI(), llvm::MachineIRBuilder::buildFSub(), llvm::MachineIRBuilder::buildSelect(), llvm::MachineIRBuilder::buildXor(), llvm::APFloat::convertFromAPInt(), llvm::CmpInst::FCMP_ULT, llvm::APInt::getSignMask(), llvm::LLT::getSizeInBits(), llvm::APInt::getZero(), llvm::APFloatBase::IEEEdouble(), llvm::APFloatBase::IEEEsingle(), Legalized, MI, MIRBuilder, llvm::APFloatBase::rmNearestTiesToEven, S1, S32, S64, llvm::LLT::scalar(), and UnableToLegalize.

Referenced by lower().

◆ lowerFPTRUNC()

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

Definition at line 7120 of file LegalizerHelper.cpp.

References llvm::LLT::getScalarType(), lowerFPTRUNC_F64_TO_F16(), MI, S16, S64, llvm::LLT::scalar(), and UnableToLegalize.

Referenced by lower().

◆ lowerFPTRUNC_F64_TO_F16()

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

Definition at line 7005 of file LegalizerHelper.cpp.

References assert(), B, llvm::MachineIRBuilder::buildAdd(), llvm::MachineIRBuilder::buildAnd(), llvm::MachineIRBuilder::buildConstant(), llvm::MachineIRBuilder::buildFPTrunc(), llvm::MachineIRBuilder::buildICmp(), llvm::MachineIRBuilder::buildLShr(), llvm::MachineIRBuilder::buildOr(), llvm::MachineIRBuilder::buildSelect(), llvm::MachineIRBuilder::buildShl(), llvm::MachineIRBuilder::buildSMax(), llvm::MachineIRBuilder::buildSMin(), llvm::MachineIRBuilder::buildSub(), llvm::MachineIRBuilder::buildTrunc(), llvm::MachineIRBuilder::buildUnmerge(), llvm::MachineIRBuilder::buildZExt(), D, llvm::MachineIRBuilder::getMF(), llvm::LLT::getScalarType(), llvm::MachineFunction::getTarget(), llvm::MachineRegisterInfo::getType(), I, llvm::CmpInst::ICMP_EQ, llvm::CmpInst::ICMP_NE, llvm::CmpInst::ICMP_SGT, llvm::CmpInst::ICMP_SLT, llvm::LLT::isVector(), Legalized, MI, MIRBuilder, N, llvm::TargetMachine::Options, S1, S32, llvm::LLT::scalar(), UnableToLegalize, and llvm::TargetOptions::UnsafeFPMath.

Referenced by lowerFPTRUNC().

◆ lowerFunnelShift()

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

Definition at line 6572 of file LegalizerHelper.cpp.

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

Referenced by lower().

◆ lowerFunnelShiftAsShifts()

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

Definition at line 6517 of file LegalizerHelper.cpp.

References llvm::MachineIRBuilder::buildAnd(), llvm::MachineIRBuilder::buildConstant(), llvm::MachineIRBuilder::buildLShr(), llvm::MachineIRBuilder::buildNot(), llvm::MachineIRBuilder::buildOr(), llvm::MachineIRBuilder::buildShl(), llvm::MachineIRBuilder::buildSub(), llvm::MachineIRBuilder::buildURem(), llvm::MachineInstrBuilder::getReg(), llvm::LLT::getScalarSizeInBits(), llvm::MachineRegisterInfo::getType(), isNonZeroModBitWidthOrUndef(), llvm::isPowerOf2_32(), Legalized, MI, MIRBuilder, X, and Y.

◆ lowerFunnelShiftWithInverse()

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

Definition at line 6478 of file LegalizerHelper.cpp.

References llvm::MachineIRBuilder::buildConstant(), llvm::MachineIRBuilder::buildInstr(), llvm::MachineIRBuilder::buildLShr(), llvm::MachineIRBuilder::buildNot(), llvm::MachineIRBuilder::buildShl(), llvm::MachineIRBuilder::buildSub(), getReg(), llvm::MachineInstrBuilder::getReg(), llvm::LLT::getScalarSizeInBits(), llvm::MachineRegisterInfo::getType(), isNonZeroModBitWidthOrUndef(), llvm::isPowerOf2_32(), Legalized, MI, MIRBuilder, UnableToLegalize, X, and Y.

◆ lowerInsert()

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

Definition at line 7622 of file LegalizerHelper.cpp.

References llvm::MachineIRBuilder::buildAnd(), llvm::MachineIRBuilder::buildCast(), llvm::MachineIRBuilder::buildConstant(), llvm::MachineIRBuilder::buildMergeLikeInstr(), llvm::MachineIRBuilder::buildOr(), llvm::MachineIRBuilder::buildPtrToInt(), llvm::MachineIRBuilder::buildShl(), llvm::MachineIRBuilder::buildUnmerge(), llvm::MachineIRBuilder::buildZExt(), llvm::dbgs(), DL, llvm::LLT::getAddressSpace(), llvm::APInt::getBitsSetWithWrap(), llvm::MachineIRBuilder::getDataLayout(), llvm::LLT::getElementType(), llvm::LLT::getNumElements(), llvm::MachineInstrBuilder::getReg(), llvm::LLT::getSizeInBits(), llvm::MachineRegisterInfo::getType(), Idx, llvm::LLT::isPointer(), llvm::LLT::isScalar(), llvm::LLT::isVector(), Legalized, LLVM_DEBUG, MI, MIRBuilder, llvm::Offset, llvm::SmallVectorTemplateBase< T, bool >::push_back(), llvm::LLT::scalar(), and UnableToLegalize.

Referenced by lower().

◆ lowerIntrinsicRound()

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

Definition at line 7252 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 8046 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 3382 of file LegalizerHelper.cpp.

References llvm::TargetLoweringBase::allowsMemoryAccess(), assert(), llvm::bit_floor(), llvm::MachineIRBuilder::buildAssertZExt(), llvm::MachineIRBuilder::buildConstant(), llvm::MachineIRBuilder::buildIntToPtr(), llvm::MachineIRBuilder::buildLoad(), llvm::MachineIRBuilder::buildLoadInstr(), llvm::MachineIRBuilder::buildOr(), llvm::MachineIRBuilder::buildPtrAdd(), llvm::MachineIRBuilder::buildSExtInReg(), llvm::MachineIRBuilder::buildShl(), llvm::MachineIRBuilder::buildTrunc(), llvm::MachineRegisterInfo::createGenericVirtualRegister(), llvm::MachineInstr::eraseFromParent(), llvm::Function::getContext(), llvm::MachineIRBuilder::getDataLayout(), llvm::GAnyLoad::getDstReg(), llvm::LLT::getElementType(), llvm::MachineFunction::getFunction(), llvm::MachineFunction::getMachineMemOperand(), llvm::MachineMemOperand::getMemoryType(), llvm::MachineIRBuilder::getMF(), llvm::GMemOperation::getMMO(), llvm::MachineInstr::getOpcode(), llvm::MachineMemOperand::getPointerInfo(), llvm::GLoadStore::getPointerReg(), llvm::LLT::getSizeInBits(), llvm::LLT::getSizeInBytes(), llvm::MachineRegisterInfo::getType(), llvm::DataLayout::isBigEndian(), llvm::LLT::isPointer(), llvm::isPowerOf2_32(), llvm::LLT::isVector(), Legalized, MIRBuilder, llvm::PowerOf2Ceil(), reduceLoadStoreWidth(), llvm::LLT::scalar(), and UnableToLegalize.

Referenced by lower().

◆ lowerMemCpyFamily()

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

Definition at line 8889 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 8636 of file LegalizerHelper.cpp.

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

◆ lowerMergeValues()

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

Definition at line 7311 of file LegalizerHelper.cpp.

References llvm::MachineIRBuilder::buildConstant(), llvm::MachineIRBuilder::buildIntToPtr(), llvm::MachineIRBuilder::buildOr(), llvm::MachineIRBuilder::buildShl(), llvm::MachineIRBuilder::buildZExt(), llvm::MachineRegisterInfo::createGenericVirtualRegister(), llvm::dbgs(), llvm::MachineIRBuilder::getDataLayout(), llvm::MachineInstrBuilder::getReg(), I, llvm::DataLayout::isNonIntegralAddressSpace(), Legalized, LLVM_DEBUG, MI, MIRBuilder, llvm::Offset, llvm::LLT::scalar(), and UnableToLegalize.

Referenced by lower().

◆ lowerMinMax()

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

Definition at line 7158 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 7998 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 6706 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 6695 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 7712 of file LegalizerHelper.cpp.

References llvm::MachineIRBuilder::buildAdd(), llvm::MachineIRBuilder::buildConstant(), llvm::MachineIRBuilder::buildCopy(), llvm::MachineIRBuilder::buildICmp(), llvm::MachineIRBuilder::buildSub(), llvm::MachineIRBuilder::buildXor(), llvm::MachineRegisterInfo::cloneVirtualRegister(), 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 8219 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)

Definition at line 7892 of file LegalizerHelper.cpp.

References assert(), llvm::MachineIRBuilder::buildAShr(), llvm::MachineIRBuilder::buildConstant(), llvm::MachineIRBuilder::buildICmp(), llvm::MachineIRBuilder::buildLShr(), llvm::MachineIRBuilder::buildSelect(), llvm::MachineIRBuilder::buildShl(), llvm::LLT::changeElementSize(), llvm::APInt::getMaxValue(), llvm::LLT::getScalarSizeInBits(), llvm::APInt::getSignedMaxValue(), llvm::APInt::getSignedMinValue(), llvm::MachineRegisterInfo::getType(), llvm::CmpInst::ICMP_NE, llvm::CmpInst::ICMP_SLT, Legalized, LHS, MI, MIRBuilder, and RHS.

Referenced by lower().

◆ lowerShuffleVector()

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

Definition at line 7461 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 6856 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, S1, S32, S64, llvm::LLT::scalar(), UnableToLegalize, and llvm::Xor.

Referenced by lower().

◆ lowerSMULH_UMULH()

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

Definition at line 8024 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 7557 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 7546 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 3519 of file LegalizerHelper.cpp.

References llvm::TargetLoweringBase::allowsMemoryAccess(), llvm::MachineIRBuilder::buildAnyExt(), llvm::MachineIRBuilder::buildAnyExtOrTrunc(), llvm::MachineIRBuilder::buildConstant(), llvm::MachineIRBuilder::buildLShr(), llvm::MachineIRBuilder::buildPtrAdd(), llvm::MachineIRBuilder::buildPtrToInt(), llvm::MachineIRBuilder::buildStore(), llvm::MachineIRBuilder::buildZExtInReg(), llvm::MachineInstr::eraseFromParent(), llvm::Function::getContext(), llvm::MachineIRBuilder::getDataLayout(), llvm::LLT::getElementType(), llvm::MachineFunction::getFunction(), llvm::MachineFunction::getMachineMemOperand(), llvm::MachineMemOperand::getMemoryType(), llvm::MachineIRBuilder::getMF(), llvm::MachineMemOperand::getPointerInfo(), llvm::GLoadStore::getPointerReg(), llvm::MachineInstrBuilder::getReg(), llvm::LLT::getSizeInBits(), llvm::LLT::getSizeInBytes(), llvm::MachineRegisterInfo::getType(), llvm::GStore::getValueReg(), llvm::LLT::isPointer(), llvm::isPowerOf2_32(), llvm::LLT::isVector(), Legalized, llvm::MachineInstr::memoperands_begin(), MIRBuilder, llvm::PowerOf2Ceil(), reduceLoadStoreWidth(), llvm::LLT::scalar(), and UnableToLegalize.

Referenced by lower().

◆ lowerTRUNC()

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

Definition at line 6637 of file LegalizerHelper.cpp.

References assert(), llvm::MachineIRBuilder::buildCopy(), llvm::MachineIRBuilder::buildMergeLikeInstr(), llvm::MachineIRBuilder::buildTrunc(), llvm::LLT::changeElementCount(), llvm::LLT::changeElementSize(), llvm::details::FixedOrScalableQuantity< LeafTy, ValueTy >::divideCoefficientBy(), llvm::extractParts(), llvm::LLT::getElementCount(), llvm::MachineIRBuilder::getMRI(), llvm::LLT::getNumElements(), llvm::MachineInstrBuilder::getReg(), llvm::LLT::getScalarSizeInBits(), I, llvm::isPowerOf2_32(), llvm::LLT::isVector(), Legalized, Merge, MI, MIRBuilder, MRI, llvm::SmallVectorBase< Size_T >::size(), and UnableToLegalize.

Referenced by lower().

◆ lowerU64ToF32BitOps()

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

Definition at line 6776 of file LegalizerHelper.cpp.

References assert(), llvm::MachineIRBuilder::buildAdd(), llvm::MachineIRBuilder::buildAnd(), llvm::MachineIRBuilder::buildConstant(), llvm::MachineIRBuilder::buildCTLZ_ZERO_UNDEF(), llvm::MachineIRBuilder::buildICmp(), llvm::MachineIRBuilder::buildLShr(), llvm::MachineIRBuilder::buildOr(), llvm::MachineIRBuilder::buildSelect(), llvm::MachineIRBuilder::buildShl(), llvm::MachineIRBuilder::buildSub(), llvm::MachineIRBuilder::buildTrunc(), llvm::CallingConv::C, llvm::MachineRegisterInfo::getType(), llvm::CmpInst::ICMP_EQ, llvm::CmpInst::ICMP_NE, llvm::CmpInst::ICMP_UGT, Legalized, MI, MIRBuilder, S1, S32, S64, and llvm::LLT::scalar().

Referenced by lowerUITOFP().

◆ lowerUITOFP()

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

Definition at line 6831 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 7349 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().

◆ lowerVAArg()

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

Definition at line 8359 of file LegalizerHelper.cpp.

References A, llvm::MachineIRBuilder::buildConstant(), llvm::MachineIRBuilder::buildLoad(), llvm::MachineIRBuilder::buildMaskLowPtrBits(), llvm::MachineIRBuilder::buildPtrAdd(), llvm::MachineIRBuilder::buildStore(), DL, llvm::Function::getContext(), llvm::MachineIRBuilder::getDataLayout(), llvm::MachineFunction::getFunction(), llvm::MachineFunction::getMachineMemOperand(), llvm::TargetLoweringBase::getMinStackArgumentAlignment(), llvm::MachineInstrBuilder::getReg(), llvm::LLT::getSizeInBits(), llvm::MachineRegisterInfo::getType(), getTypeForLLT(), Legalized, llvm::Log2(), MI, MIRBuilder, llvm::MachineMemOperand::MOLoad, llvm::MachineMemOperand::MOStore, and llvm::LLT::scalar().

Referenced by lower().

◆ lowerVectorReduction()

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

Definition at line 8339 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 5338 of file LegalizerHelper.cpp.

References llvm::MachineIRBuilder::buildConstant(), llvm::MachineIRBuilder::buildDeleteTrailingVectorElements(), llvm::MachineIRBuilder::buildInsertVectorElement(), llvm::MachineIRBuilder::buildInstr(), llvm::MachineIRBuilder::buildPadVectorWithUndefElements(), llvm::MachineIRBuilder::buildShuffleSplat(), llvm::MachineIRBuilder::buildUndef(), llvm::GISelChangeObserver::changedInstr(), llvm::LLT::changeElementCount(), llvm::GISelChangeObserver::changingInstr(), llvm::LLT::fixed_vector(), llvm::ElementCount::get(), llvm::MachineIRBuilder::getDataLayout(), llvm::LLT::getElementCount(), llvm::LLT::getElementType(), llvm::LLT::getNumElements(), llvm::LLT::getScalarType(), llvm::MachineRegisterInfo::getType(), llvm::TargetLoweringBase::getVectorIdxTy(), Idx, llvm::LLT::isScalable(), Legalized, MI, MIRBuilder, moreElementsVectorDst(), moreElementsVectorPhi(), moreElementsVectorShuffle(), moreElementsVectorSrc(), Observer, llvm::SmallVectorTemplateBase< T, bool >::push_back(), llvm::MachineOperand::setReg(), 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 1793 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 5282 of file LegalizerHelper.cpp.

References assert(), llvm::GISelChangeObserver::changedInstr(), llvm::GISelChangeObserver::changingInstr(), 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 5661 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 1803 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 1200 of file LegalizerHelper.cpp.

References llvm::MachineInstrBuilder::add(), llvm::MachineInstrBuilder::addDef(), llvm::MachineInstrBuilder::addUse(), assert(), llvm::SmallVectorTemplateCommon< T, typename >::back(), llvm::SmallVectorTemplateCommon< T, typename >::begin(), llvm::MachineIRBuilder::buildAnyExt(), llvm::MachineIRBuilder::buildAShr(), llvm::MachineIRBuilder::buildBuildVector(), llvm::MachineIRBuilder::buildConstant(), llvm::MachineIRBuilder::buildCopy(), llvm::MachineIRBuilder::buildFreeze(), llvm::MachineIRBuilder::buildICmp(), llvm::MachineIRBuilder::buildInstr(), llvm::MachineIRBuilder::buildLoad(), llvm::MachineIRBuilder::buildLoadInstr(), llvm::MachineIRBuilder::buildMergeLikeInstr(), llvm::MachineIRBuilder::buildMul(), llvm::MachineIRBuilder::buildOr(), llvm::MachineIRBuilder::buildSelect(), llvm::MachineIRBuilder::buildSExt(), llvm::MachineIRBuilder::buildStore(), llvm::MachineIRBuilder::buildTrunc(), llvm::MachineIRBuilder::buildUndef(), llvm::MachineIRBuilder::buildUnmerge(), llvm::MachineIRBuilder::buildVScale(), llvm::MachineIRBuilder::buildXor(), llvm::MachineIRBuilder::buildZExt(), llvm::CallingConv::C, llvm::GISelChangeObserver::changedInstr(), llvm::GISelChangeObserver::changingInstr(), llvm::MachineRegisterInfo::createGenericVirtualRegister(), llvm::dbgs(), llvm::SmallVectorTemplateCommon< T, typename >::end(), llvm::extractParts(), llvm::LLT::getElementCount(), llvm::MachineBasicBlock::getFirstNonPHI(), llvm::MachineBasicBlock::getFirstTerminatorForward(), llvm::MachineIRBuilder::getInsertPt(), llvm::MachineIRBuilder::getMBB(), getReg(), llvm::MachineInstrBuilder::getReg(), llvm::LLT::getScalarSizeInBits(), llvm::MachineMemOperand::getSizeInBits(), llvm::LLT::getSizeInBits(), llvm::MachineRegisterInfo::getType(), llvm::ICmpInst::getUnsignedPredicate(), llvm::LocationSize::getValue(), I, llvm::CmpInst::ICMP_EQ, llvm::SmallVectorImpl< T >::insert(), llvm::ICmpInst::isEquality(), llvm::LLT::isVector(), Legalized, LHS, LLVM_DEBUG, llvm::APInt::lshr(), MBB, MI, MIRBuilder, narrowScalarAddSub(), narrowScalarBasic(), narrowScalarCTLZ(), narrowScalarCTPOP(), narrowScalarCTTZ(), narrowScalarDst(), narrowScalarExt(), narrowScalarExtract(), narrowScalarFLDEXP(), narrowScalarFPTOI(), narrowScalarInsert(), narrowScalarMul(), narrowScalarSelect(), narrowScalarShift(), narrowScalarSrc(), Observer, llvm::Offset, llvm::SmallVectorTemplateBase< T, bool >::push_back(), reduceLoadStoreWidth(), RHS, llvm::LLT::scalar(), llvm::MachineIRBuilder::setInsertPt(), llvm::MachineOperand::setReg(), llvm::SmallVectorBase< Size_T >::size(), llvm::APInt::trunc(), UnableToLegalize, llvm::LLT::vector(), llvm::Xor, and llvm::zip().

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 5767 of file LegalizerHelper.cpp.

References llvm::MachineIRBuilder::buildInstr(), llvm::MachineRegisterInfo::createGenericVirtualRegister(), llvm::extractParts(), llvm::MachineRegisterInfo::getType(), I, llvm::LLT::isVector(), Legalized, llvm_unreachable, MI, MIRBuilder, 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 6070 of file LegalizerHelper.cpp.

References assert(), llvm::MachineIRBuilder::buildInstr(), llvm::extractParts(), 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 6178 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 6244 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 6211 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 1784 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 6111 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 5918 of file LegalizerHelper.cpp.

References llvm::MachineIRBuilder::buildBuildVector(), llvm::MachineIRBuilder::buildCopy(), llvm::MachineIRBuilder::buildExtract(), llvm::MachineIRBuilder::buildMergeLikeInstr(), llvm::MachineRegisterInfo::createGenericVirtualRegister(), llvm::extractParts(), 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 6267 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 5893 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 
)

Definition at line 5986 of file LegalizerHelper.cpp.

References llvm::MachineIRBuilder::buildAnyExt(), llvm::MachineIRBuilder::buildExtract(), llvm::MachineIRBuilder::buildInsert(), llvm::MachineIRBuilder::buildMergeLikeInstr(), llvm::MachineIRBuilder::buildTrunc(), llvm::MachineRegisterInfo::createGenericVirtualRegister(), llvm::extractParts(), llvm::LLT::getSizeInBits(), llvm::MachineRegisterInfo::getType(), I, Legalized, MI, MIRBuilder, llvm::SmallVectorTemplateBase< T, bool >::push_back(), llvm::LLT::scalar(), llvm::SmallVectorBase< Size_T >::size(), and UnableToLegalize.

Referenced by narrowScalar().

◆ narrowScalarMul()

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

Definition at line 5863 of file LegalizerHelper.cpp.

References llvm::MachineIRBuilder::buildMergeLikeInstr(), llvm::extractParts(), 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 6132 of file LegalizerHelper.cpp.

References llvm::MachineIRBuilder::buildSelect(), llvm::extractParts(), 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 5173 of file LegalizerHelper.cpp.

References llvm::MachineIRBuilder::buildAShr(), llvm::MachineIRBuilder::buildConstant(), llvm::MachineIRBuilder::buildICmp(), llvm::MachineIRBuilder::buildInstr(), llvm::MachineIRBuilder::buildLShr(), llvm::MachineIRBuilder::buildMergeLikeInstr(), llvm::MachineIRBuilder::buildOr(), llvm::MachineIRBuilder::buildSelect(), llvm::MachineIRBuilder::buildShl(), llvm::MachineIRBuilder::buildSub(), llvm::MachineIRBuilder::buildUnmerge(), llvm::GISelChangeObserver::changedInstr(), llvm::GISelChangeObserver::changingInstr(), llvm::MachineRegisterInfo::createGenericVirtualRegister(), llvm::getIConstantVRegValWithLookThrough(), llvm::LLT::getScalarSizeInBits(), llvm::MachineRegisterInfo::getType(), llvm::Hi, llvm::CmpInst::ICMP_EQ, llvm::CmpInst::ICMP_ULT, llvm::LLT::isVector(), Legalized, llvm_unreachable, llvm::Lo, MI, MIRBuilder, narrowScalarShiftByConstant(), narrowScalarSrc(), Observer, llvm::LLT::scalar(), and UnableToLegalize.

Referenced by narrowScalar().

◆ narrowScalarShiftByConstant()

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

Definition at line 5084 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 1768 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 4515 of file LegalizerHelper.cpp.

References llvm::MachineIRBuilder::buildLoad(), llvm::MachineIRBuilder::buildStore(), llvm::MachineRegisterInfo::createGenericVirtualRegister(), llvm::dbgs(), llvm::MachineInstr::eraseFromParent(), llvm::extractParts(), 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(), llvm::LocationSize::getValue(), 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 2354 of file LegalizerHelper.cpp.

References assert(), llvm::APFloat::bitcastToAPInt(), llvm::MachineIRBuilder::buildConstant(), llvm::MachineIRBuilder::buildInstr(), llvm::MachineIRBuilder::buildLShr(), llvm::MachineIRBuilder::buildOr(), llvm::MachineIRBuilder::buildSub(), llvm::MachineIRBuilder::buildTrunc(), llvm::MachineIRBuilder::buildZExtOrTrunc(), llvm::GISelChangeObserver::changedInstr(), llvm::GISelChangeObserver::changingInstr(), llvm::MachineRegisterInfo::createGenericVirtualRegister(), llvm::MCInstrInfo::get(), llvm::MachineIRBuilder::getBoolExtOp(), llvm::MachineOperand::getCImm(), llvm::Function::getContext(), llvm::LLT::getElementCount(), llvm::LLT::getElementType(), llvm::LegalizerInfo::getExtOpcodeForWideningConstant(), llvm::MachineBasicBlock::getFirstNonPHI(), llvm::MachineBasicBlock::getFirstTerminatorForward(), llvm::MachineOperand::getFPImm(), llvm::MachineFunction::getFunction(), llvm::MachineIRBuilder::getInsertPt(), llvm::MachineIRBuilder::getMBB(), llvm::MachineIRBuilder::getMF(), llvm::APInt::getOneBitSet(), llvm::LLT::getScalarSizeInBits(), llvm::LLT::getSizeInBits(), llvm::MachineIRBuilder::getTII(), llvm::MachineRegisterInfo::getType(), llvm::ConstantInt::getValue(), llvm::ConstantFP::getValueAPF(), I, llvm::LLT::isScalar(), llvm::CmpInst::isSigned(), llvm::LLT::isVector(), Legalized, MBB, MI, MIRBuilder, Observer, llvm::MachineOperand::setCImm(), llvm::MachineIRBuilder::setInsertPt(), llvm::MachineIRBuilder::setInstrAndDebugLoc(), llvm::APInt::sext(), UnableToLegalize, llvm::LLT::vector(), widenScalarDst(), widenScalarSrc(), and llvm::APInt::zext().

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 1775 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 1761 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.

Referenced by bitcastDst(), bitcastExtractVectorElt(), bitcastInsertVectorElt(), bitcastSrc(), llvm::AMDGPULegalizerInfo::buildMultiply(), coerceToScalar(), convertPtrToInt(), createStackTemporary(), equalizeVectorShuffleLengths(), fewerElementsBitcast(), fewerElementsVectorExtractInsertVectorElt(), fewerElementsVectorMerge(), fewerElementsVectorMultiEltType(), fewerElementsVectorPhi(), fewerElementsVectorReductions(), fewerElementsVectorSeqReductions(), fewerElementsVectorShuffle(), fewerElementsVectorUnmergeValues(), getDynStackAllocTargetPtr(), getVectorElementPointer(), llvm::AArch64LegalizerInfo::legalizeCustom(), llvm::AMDGPULegalizerInfo::legalizeCustom(), llvm::ARMLegalizerInfo::legalizeCustom(), llvm::MipsLegalizerInfo::legalizeCustom(), llvm::RISCVLegalizerInfo::legalizeCustom(), llvm::SPIRVLegalizerInfo::legalizeCustom(), legalizeInstrStep(), llvm::AArch64LegalizerInfo::legalizeIntrinsic(), llvm::AMDGPULegalizerInfo::legalizeIntrinsic(), llvm::MipsLegalizerInfo::legalizeIntrinsic(), llvm::RISCVLegalizerInfo::legalizeIntrinsic(), llvm::AMDGPULegalizerInfo::legalizeLoad(), llvm::Legalizer::legalizeMachineFunction(), llvm::AMDGPULegalizerInfo::legalizeMinNumMaxNum(), llvm::AMDGPULegalizerInfo::legalizeMul(), llvm::AMDGPULegalizerInfo::legalizeSBufferLoad(), llvm::AMDGPULegalizerInfo::legalizeStore(), libcall(), lower(), lowerAbsToAddXor(), lowerAbsToCNeg(), lowerAbsToMaxNeg(), lowerAddSubSatToAddoSubo(), lowerAddSubSatToMinMax(), lowerBitcast(), lowerBitCount(), lowerBitreverse(), lowerBswap(), lowerConstant(), lowerDIVREM(), lowerDynStackAlloc(), lowerEXT(), lowerExtract(), lowerExtractInsertVectorElt(), lowerFConstant(), lowerFCopySign(), lowerFFloor(), lowerFMad(), lowerFMinNumMaxNum(), lowerFPOWI(), lowerFPTOSI(), lowerFPTOUI(), lowerFPTRUNC_F64_TO_F16(), lowerFunnelShiftAsShifts(), lowerFunnelShiftWithInverse(), lowerInsert(), lowerIntrinsicRound(), lowerISFPCLASS(), lowerLoad(), lowerMergeValues(), lowerMinMax(), lowerReadWriteRegister(), lowerRotate(), lowerRotateWithReverseRotate(), lowerSADDO_SSUBO(), lowerSelect(), lowerShlSat(), lowerShuffleVector(), lowerSITOFP(), lowerSMULH_UMULH(), lowerStackRestore(), lowerStackSave(), lowerStore(), lowerTRUNC(), lowerU64ToF32BitOps(), lowerUITOFP(), lowerUnmergeValues(), lowerVAArg(), lowerVectorReduction(), moreElementsVector(), moreElementsVectorDst(), moreElementsVectorPhi(), moreElementsVectorShuffle(), moreElementsVectorSrc(), narrowScalar(), narrowScalarAddSub(), narrowScalarBasic(), narrowScalarCTLZ(), narrowScalarCTPOP(), narrowScalarCTTZ(), narrowScalarDst(), narrowScalarExtract(), narrowScalarFLDEXP(), narrowScalarInsert(), narrowScalarMul(), narrowScalarSelect(), narrowScalarShift(), narrowScalarShiftByConstant(), narrowScalarSrc(), reduceLoadStoreWidth(), widenScalar(), widenScalarDst(), and widenScalarSrc().

◆ Observer

GISelChangeObserver& llvm::LegalizerHelper::Observer

To keep track of changes made by the LegalizerHelper.

Definition at line 54 of file LegalizerHelper.h.

Referenced by bitcast(), llvm::AArch64LegalizerInfo::legalizeCustom(), llvm::RISCVLegalizerInfo::legalizeCustom(), llvm::AMDGPULegalizerInfo::legalizeDSAtomicFPIntrinsic(), llvm::AArch64LegalizerInfo::legalizeIntrinsic(), llvm::AMDGPULegalizerInfo::legalizeIntrinsic(), llvm::AMDGPULegalizerInfo::legalizeLoad(), llvm::AMDGPULegalizerInfo::legalizeSBufferLoad(), llvm::AMDGPULegalizerInfo::legalizeStore(), lower(), lowerBitCount(), lowerVectorReduction(), moreElementsVector(), moreElementsVectorPhi(), narrowScalar(), narrowScalarFLDEXP(), narrowScalarFPTOI(), narrowScalarShift(), and widenScalar().

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