#include "llvm/CodeGen/GlobalISel/LegalizerHelper.h"
#include "llvm/CodeGen/GlobalISel/CallLowering.h"
#include "llvm/CodeGen/GlobalISel/GISelChangeObserver.h"
#include "llvm/CodeGen/GlobalISel/GISelValueTracking.h"
#include "llvm/CodeGen/GlobalISel/GenericMachineInstrs.h"
#include "llvm/CodeGen/GlobalISel/LegalizerInfo.h"
#include "llvm/CodeGen/GlobalISel/LostDebugLocObserver.h"
#include "llvm/CodeGen/GlobalISel/MIPatternMatch.h"
#include "llvm/CodeGen/GlobalISel/MachineIRBuilder.h"
#include "llvm/CodeGen/GlobalISel/Utils.h"
#include "llvm/CodeGen/LowLevelTypeUtils.h"
#include "llvm/CodeGen/MachineConstantPool.h"
#include "llvm/CodeGen/MachineFrameInfo.h"
#include "llvm/CodeGen/MachineRegisterInfo.h"
#include "llvm/CodeGen/RuntimeLibcallUtil.h"
#include "llvm/CodeGen/TargetFrameLowering.h"
#include "llvm/CodeGen/TargetInstrInfo.h"
#include "llvm/CodeGen/TargetLowering.h"
#include "llvm/CodeGen/TargetOpcodes.h"
#include "llvm/CodeGen/TargetSubtargetInfo.h"
#include "llvm/IR/Instructions.h"
#include "llvm/Support/Debug.h"
#include "llvm/Support/MathExtras.h"
#include "llvm/Support/raw_ostream.h"
#include "llvm/Target/TargetMachine.h"
#include <numeric>
#include <optional>

Macros
#define	DEBUG_TYPE "legalizer"
#define	RTLIBCASE_INT(LibcallPrefix)
#define	RTLIBCASE(LibcallPrefix)
#define	LCALLS(A, B)
#define	LCALL5(A)
#define	RTLIBCASE_CMP(LibcallPrefix, ICmpPred)

Functions
static std::pair< int, int >	getNarrowTypeBreakDown (LLT OrigTy, LLT NarrowTy, LLT &LeftoverTy)
	Try to break down `OrigTy` into `NarrowTy` sized pieces.
static Type *	getFloatTypeForLLT (LLVMContext &Ctx, LLT Ty)
static void	getUnmergeResults (SmallVectorImpl< Register > &Regs, const MachineInstr &MI)
	Append the result registers of G_UNMERGE_VALUES `MI` to `Regs`.
static RTLIB::Libcall	getRTLibDesc (unsigned Opcode, unsigned Size)
static bool	isLibCallInTailPosition (const CallLowering::ArgInfo &Result, MachineInstr &MI, const TargetInstrInfo &TII, MachineRegisterInfo &MRI)
	True if an instruction is in tail position in its caller.
static LegalizerHelper::LegalizeResult	simpleLibcall (MachineInstr &MI, MachineIRBuilder &MIRBuilder, unsigned Size, Type *OpType, LostDebugLocObserver &LocObserver)
static RTLIB::Libcall	getOutlineAtomicLibcall (MachineInstr &MI)
static LegalizerHelper::LegalizeResult	createAtomicLibcall (MachineIRBuilder &MIRBuilder, MachineInstr &MI)
static RTLIB::Libcall	getConvRTLibDesc (unsigned Opcode, Type ToType, Type FromType)
static LegalizerHelper::LegalizeResult	conversionLibcall (MachineInstr &MI, MachineIRBuilder &MIRBuilder, Type ToType, Type FromType, LostDebugLocObserver &LocObserver, const TargetLowering &TLI, bool IsSigned=false)
static RTLIB::Libcall	getStateLibraryFunctionFor (MachineInstr &MI, const TargetLowering &TLI)
static std::pair< RTLIB::Libcall, CmpInst::Predicate >	getFCMPLibcallDesc (const CmpInst::Predicate Pred, unsigned Size)
	Returns the corresponding libcall for the given Pred and the ICMP predicate that should be generated to compare with #0 after the libcall.
static void	getUnmergePieces (SmallVectorImpl< Register > &Pieces, MachineIRBuilder &B, Register Src, LLT Ty)
static void	emitLoadFromConstantPool (Register DstReg, const Constant *ConstVal, MachineIRBuilder &MIRBuilder)
static Register	getBitcastWiderVectorElementOffset (MachineIRBuilder &B, Register Idx, unsigned NewEltSize, unsigned OldEltSize)
	Figure out the bit offset into a register when coercing a vector index for the wide element type.
static Register	buildBitFieldInsert (MachineIRBuilder &B, Register TargetReg, Register InsertReg, Register OffsetBits)
	Emit code to insert `InsertReg` into `TargetRet` at `OffsetBits` in `TargetReg`, while preserving other bits in `TargetReg`.
static Register	clampVectorIndex (MachineIRBuilder &B, Register IdxReg, LLT VecTy)
static bool	hasSameNumEltsOnAllVectorOperands (GenericMachineInstr &MI, MachineRegisterInfo &MRI, std::initializer_list< unsigned > NonVecOpIndices)
	Check that all vector operands have same number of elements.
static void	makeDstOps (SmallVectorImpl< DstOp > &DstOps, LLT Ty, unsigned NumElts)
	Fill `DstOps` with DstOps that have same number of elements combined as the Ty.
static void	broadcastSrcOp (SmallVectorImpl< SrcOp > &Ops, unsigned N, MachineOperand &Op)
	Operand `Op` is used on `N` sub-instructions.
static bool	isNonZeroModBitWidthOrUndef (const MachineRegisterInfo &MRI, Register Reg, unsigned BW)
static LegalizerHelper::LegalizeResult	loweri64tof16ITOFP (MachineInstr &MI, Register Dst, LLT DstTy, Register Src, LLT SrcTy, MachineIRBuilder &MIRBuilder)
	i64->fp16 itofp can be lowered to i64->f64,f64->f32,f32->f16.
static CmpInst::Predicate	minMaxToCompare (unsigned Opc)
static MachineInstrBuilder	SwapN (unsigned N, DstOp Dst, MachineIRBuilder &B, MachineInstrBuilder Src, const APInt &Mask)
static bool	shouldLowerMemFuncForSize (const MachineFunction &MF)
static bool	findGISelOptimalMemOpLowering (std::vector< LLT > &MemOps, unsigned Limit, const MemOp &Op, unsigned DstAS, unsigned SrcAS, const AttributeList &FuncAttributes, const TargetLowering &TLI)
static Register	getMemsetValue (Register Val, LLT Ty, MachineIRBuilder &MIB)

Macro Definition Documentation

◆ DEBUG_TYPE

#define DEBUG_TYPE "legalizer"

Definition at line 43 of file LegalizerHelper.cpp.

◆ LCALL5

#define LCALL5 ( A )

Value:

LCALLS(A, 1), LCALLS(A, 2), LCALLS(A, 4), LCALLS(A, 8), LCALLS(A, 16)

A

static GCRegistry::Add< ErlangGC > A("erlang", "erlang-compatible garbage collector")

LCALLS

#define LCALLS(A, B)

Referenced by getOutlineAtomicLibcall().

◆ LCALLS

#define LCALLS	(		A,
			B )

Value:

{A##B##_RELAX, A##B##_ACQ, A##B##_REL, A##B##_ACQ_REL}

B

static GCRegistry::Add< OcamlGC > B("ocaml", "ocaml 3.10-compatible GC")

◆ RTLIBCASE

#define RTLIBCASE ( LibcallPrefix )

Value:

  do {                                                                         \
    switch (Size) {                                                            \
    case 32:                                                                   \
      return RTLIB::LibcallPrefix##32;                                         \
    case 64:                                                                   \
      return RTLIB::LibcallPrefix##64;                                         \
    case 80:                                                                   \
      return RTLIB::LibcallPrefix##80;                                         \
    case 128:                                                                  \
      return RTLIB::LibcallPrefix##128;                                        \
    default:                                                                   \
      llvm_unreachable("unexpected size");                                     \
    }                                                                          \
  } while (0)

Referenced by getRTLibDesc().

◆ RTLIBCASE_CMP

#define RTLIBCASE_CMP	(		LibcallPrefix,
			ICmpPred )

Value:

  do {                                                                         \
    switch (Size) {                                                            \
    case 32:                                                                   \
      return {RTLIB::LibcallPrefix##32, ICmpPred};                             \
    case 64:                                                                   \
      return {RTLIB::LibcallPrefix##64, ICmpPred};                             \
    case 128:                                                                  \
      return {RTLIB::LibcallPrefix##128, ICmpPred};                            \
    default:                                                                   \
      llvm_unreachable("unexpected size");                                     \
    }                                                                          \
  } while (0)

Referenced by getFCMPLibcallDesc().

◆ RTLIBCASE_INT

#define RTLIBCASE_INT ( LibcallPrefix )

Value:

  do {                                                                         \
    switch (Size) {                                                            \
    case 32:                                                                   \
      return RTLIB::LibcallPrefix##32;                                         \
    case 64:                                                                   \
      return RTLIB::LibcallPrefix##64;                                         \
    case 128:                                                                  \
      return RTLIB::LibcallPrefix##128;                                        \
    default:                                                                   \
      llvm_unreachable("unexpected size");                                     \
    }                                                                          \
  } while (0)

Referenced by getRTLibDesc().

Function Documentation

◆ broadcastSrcOp()

void broadcastSrcOp	(	SmallVectorImpl< SrcOp > &	Ops,
		unsigned	N,
		MachineOperand &	Op )

static

Operand Op is used on N sub-instructions.

Fill Ops with N SrcOps made from Op depending on operand type.

Definition at line 4960 of file LegalizerHelper.cpp.

References AbstractManglingParser< Derived, Alloc >::Ops, llvm_unreachable, and N.

Referenced by llvm::LegalizerHelper::fewerElementsVectorMultiEltType().

◆ buildBitFieldInsert()

Register buildBitFieldInsert	(	MachineIRBuilder &	B,
		Register	TargetReg,
		Register	InsertReg,
		Register	OffsetBits )

static

Emit code to insert InsertReg into TargetRet at OffsetBits in TargetReg, while preserving other bits in TargetReg.

(InsertReg << Offset) | (TargetReg & ~(-1 >> InsertReg.size()) << Offset)

Definition at line 3752 of file LegalizerHelper.cpp.

References B(), llvm::APInt::getLowBitsSet(), and llvm::LLT::getSizeInBits().

Referenced by llvm::LegalizerHelper::bitcastInsertVectorElt().

◆ clampVectorIndex()

Register clampVectorIndex	(	MachineIRBuilder &	B,
		Register	IdxReg,
		LLT	VecTy )

static

Definition at line 4849 of file LegalizerHelper.cpp.

References B(), llvm::APInt::getLowBitsSet(), llvm::LLT::getNumElements(), llvm::LLT::getSizeInBits(), llvm::isPowerOf2_32(), llvm::Log2_32(), llvm::MIPatternMatch::m_ICst(), and llvm::MIPatternMatch::mi_match().

Referenced by llvm::LegalizerHelper::getVectorElementPointer().

◆ conversionLibcall()

LegalizerHelper::LegalizeResult conversionLibcall	(	MachineInstr &	MI,
		MachineIRBuilder &	MIRBuilder,
		Type *	ToType,
		Type *	FromType,
		LostDebugLocObserver &	LocObserver,
		const TargetLowering &	TLI,
		bool	IsSigned = false )

static

Definition at line 946 of file LegalizerHelper.cpp.

References llvm::createLibcall(), llvm::CallLowering::BaseArgInfo::Flags, getConvRTLibDesc(), llvm::LegalizeActions::Libcall, MI, and llvm::TargetLoweringBase::shouldSignExtendTypeInLibCall().

Referenced by llvm::LegalizerHelper::libcall().

◆ createAtomicLibcall()

LegalizerHelper::LegalizeResult createAtomicLibcall	(	MachineIRBuilder &	MIRBuilder,
		MachineInstr &	MI )

static

Definition at line 846 of file LegalizerHelper.cpp.

References llvm::append_range(), llvm::MachineIRBuilder::buildConstant(), llvm::MachineIRBuilder::buildSub(), llvm::MachineIRBuilder::buildXor(), llvm::MachineOperand::CreateES(), llvm::dbgs(), llvm::IntegerType::get(), llvm::PointerType::get(), llvm::StructType::get(), llvm::TargetSubtargetInfo::getCallLowering(), llvm::Function::getContext(), llvm::MachineFunction::getFunction(), llvm::MachineIRBuilder::getMF(), llvm::MCInstrInfo::getName(), getOutlineAtomicLibcall(), llvm::MachineInstrBuilder::getReg(), llvm::LLT::getSizeInBits(), llvm::MachineFunction::getSubtarget(), llvm::TargetSubtargetInfo::getTargetLowering(), llvm::MachineIRBuilder::getTII(), Info, llvm::LegalizerHelper::Legalized, LLVM_DEBUG, llvm_unreachable, MI, Opc, llvm::SmallVectorTemplateBase< T, bool >::push_back(), Success, and llvm::LegalizerHelper::UnableToLegalize.

Referenced by llvm::LegalizerHelper::libcall().

◆ emitLoadFromConstantPool()

void emitLoadFromConstantPool	(	Register	DstReg,
		const Constant *	ConstVal,
		MachineIRBuilder &	MIRBuilder )

static

Definition at line 3509 of file LegalizerHelper.cpp.

References llvm::MachineIRBuilder::buildConstantPool(), llvm::MachineIRBuilder::buildLoadInstr(), DL, llvm::MachineFunction::getConstantPool(), llvm::MachinePointerInfo::getConstantPool(), llvm::MachineConstantPool::getConstantPoolIndex(), llvm::MachineIRBuilder::getDataLayout(), llvm::MachineFunction::getMachineMemOperand(), llvm::MachineIRBuilder::getMF(), llvm::MachineIRBuilder::getMRI(), llvm::Value::getType(), llvm::MachineMemOperand::MOLoad, MRI, and llvm::LLT::pointer().

Referenced by llvm::LegalizerHelper::lowerConstant(), and llvm::LegalizerHelper::lowerFConstant().

◆ findGISelOptimalMemOpLowering()

bool findGISelOptimalMemOpLowering	(	std::vector< LLT > &	MemOps,
		unsigned	Limit,
		const MemOp &	Op,
		unsigned	DstAS,
		unsigned	SrcAS,
		const AttributeList &	FuncAttributes,
		const TargetLowering &	TLI )

static

Definition at line 10134 of file LegalizerHelper.cpp.

References llvm::TargetLoweringBase::allowsMisalignedMemoryAccesses(), assert(), llvm::bit_floor(), llvm::CallingConv::Fast, llvm::getMVTForLLT(), llvm::TargetLoweringBase::getOptimalMemOpLLT(), llvm::LLT::getSizeInBits(), llvm::LLT::getSizeInBytes(), llvm::LLT::isVector(), llvm::MachineMemOperand::MONone, llvm::LLT::scalar(), and Size.

◆ getBitcastWiderVectorElementOffset()

Register getBitcastWiderVectorElementOffset	(	MachineIRBuilder &	B,
		Register	Idx,
		unsigned	NewEltSize,
		unsigned	OldEltSize )

static

Figure out the bit offset into a register when coercing a vector index for the wide element type.

This is only for the case when promoting vector to one with larger elements. offset_idx = G_AND idx, ~(-1 << Log2(DstEltSize / SrcEltSize)) offset_bits = G_SHL offset_idx, Log2(SrcEltSize)

Definition at line 3624 of file LegalizerHelper.cpp.

References B(), llvm::APInt::getAllOnes(), llvm::LLT::getSizeInBits(), and llvm::Log2_32().

Referenced by llvm::LegalizerHelper::bitcastExtractVectorElt(), and llvm::LegalizerHelper::bitcastInsertVectorElt().

◆ getConvRTLibDesc()

RTLIB::Libcall getConvRTLibDesc	(	unsigned	Opcode,
		Type *	ToType,
		Type *	FromType )

static

Definition at line 923 of file LegalizerHelper.cpp.

References llvm::RTLIB::getFPEXT(), llvm::RTLIB::getFPROUND(), llvm::RTLIB::getFPTOSINT(), llvm::RTLIB::getFPTOUINT(), llvm::RTLIB::getSINTTOFP(), llvm::RTLIB::getUINTTOFP(), llvm::MVT::getVT(), and llvm_unreachable.

Referenced by conversionLibcall().

◆ getFCMPLibcallDesc()

std::pair< RTLIB::Libcall, CmpInst::Predicate > getFCMPLibcallDesc	(	const CmpInst::Predicate	Pred,
		unsigned	Size )

static

Returns the corresponding libcall for the given Pred and the ICMP predicate that should be generated to compare with #0 after the libcall.

Definition at line 1077 of file LegalizerHelper.cpp.

References llvm::CmpInst::BAD_ICMP_PREDICATE, llvm::CmpInst::FCMP_OEQ, llvm::CmpInst::FCMP_OGE, llvm::CmpInst::FCMP_OGT, llvm::CmpInst::FCMP_OLE, llvm::CmpInst::FCMP_OLT, llvm::CmpInst::FCMP_UNE, llvm::CmpInst::FCMP_UNO, llvm::CmpInst::ICMP_EQ, llvm::CmpInst::ICMP_NE, llvm::CmpInst::ICMP_SGE, llvm::CmpInst::ICMP_SGT, llvm::CmpInst::ICMP_SLE, llvm::CmpInst::ICMP_SLT, RTLIBCASE_CMP, and Size.

◆ getFloatTypeForLLT()

Type * getFloatTypeForLLT	(	LLVMContext &	Ctx,
		LLT	Ty )

static

Definition at line 84 of file LegalizerHelper.cpp.

References llvm::Type::getDoubleTy(), llvm::Type::getFloatTy(), llvm::Type::getFP128Ty(), llvm::Type::getHalfTy(), and llvm::Type::getX86_FP80Ty().

Referenced by llvm::LegalizerHelper::libcall().

◆ getMemsetValue()

Register getMemsetValue	(	Register	Val,
		LLT	Ty,
		MachineIRBuilder &	MIB )

static

Definition at line 10200 of file LegalizerHelper.cpp.

References llvm::MachineIRBuilder::buildConstant(), llvm::MachineIRBuilder::buildMul(), llvm::MachineIRBuilder::buildSplatBuildVector(), llvm::MachineIRBuilder::buildZExtOrTrunc(), llvm::getIConstantVRegValWithLookThrough(), llvm::MachineIRBuilder::getMRI(), llvm::MachineInstrBuilder::getReg(), llvm::LLT::getScalarType(), llvm::APInt::getSplat(), MRI, and llvm::APInt::trunc().

Referenced by getMemsetStores().

◆ getNarrowTypeBreakDown()

std::pair< int, int > getNarrowTypeBreakDown	(	LLT	OrigTy,
		LLT	NarrowTy,
		LLT &	LeftoverTy )

static

Try to break down OrigTy into NarrowTy sized pieces.

Returns the number of NarrowTy elements needed to reconstruct OrigTy, with any leftover piece as type LeftoverTy

Returns -1 in the first element of the pair if the breakdown is not satisfiable.

Definition at line 57 of file LegalizerHelper.cpp.

References assert(), llvm::LLT::getElementType(), llvm::ElementCount::getFixed(), llvm::LLT::getScalarSizeInBits(), llvm::LLT::getSizeInBits(), llvm::LLT::isValid(), llvm::LLT::isVector(), llvm::LLT::scalar(), llvm::LLT::scalarOrVector(), and Size.

Referenced by makeDstOps(), and llvm::LegalizerHelper::reduceLoadStoreWidth().

◆ getOutlineAtomicLibcall()

RTLIB::Libcall getOutlineAtomicLibcall ( MachineInstr & MI )

static

Definition at line 798 of file LegalizerHelper.cpp.

References llvm::cast(), llvm::LLT::getSizeInBytes(), llvm::LLT::isVector(), LCALL5, MI, and Opc.

Referenced by createAtomicLibcall().

◆ getRTLibDesc()

RTLIB::Libcall getRTLibDesc	(	unsigned	Opcode,
		unsigned	Size )

static

Definition at line 382 of file LegalizerHelper.cpp.

References llvm_unreachable, RTLIBCASE, RTLIBCASE_INT, and Size.

Referenced by llvm::LegalizerHelper::libcall(), and simpleLibcall().

◆ getStateLibraryFunctionFor()

RTLIB::Libcall getStateLibraryFunctionFor	(	MachineInstr &	MI,
		const TargetLowering &	TLI )

static

Definition at line 964 of file LegalizerHelper.cpp.

References llvm_unreachable, and MI.

◆ getUnmergePieces()

void getUnmergePieces	(	SmallVectorImpl< Register > &	Pieces,
		MachineIRBuilder &	B,
		Register	Src,
		LLT	Ty )

static

Definition at line 3502 of file LegalizerHelper.cpp.

References B(), E(), I, and llvm::SmallVectorTemplateBase< T, bool >::push_back().

Referenced by llvm::LegalizerHelper::lowerBitcast().

◆ getUnmergeResults()

void getUnmergeResults	(	SmallVectorImpl< Register > &	Regs,
		const MachineInstr &	MI )

static

Append the result registers of G_UNMERGE_VALUES MI to Regs.

Definition at line 225 of file LegalizerHelper.cpp.

References assert(), I, MI, llvm::SmallVectorImpl< T >::resize(), and llvm::SmallVectorTemplateCommon< T, typename >::size().

Referenced by llvm::LegalizerHelper::fewerElementsBitcast().

◆ hasSameNumEltsOnAllVectorOperands()

bool hasSameNumEltsOnAllVectorOperands	(	GenericMachineInstr &	MI,
		MachineRegisterInfo &	MRI,
		std::initializer_list< unsigned >	NonVecOpIndices )

static

Check that all vector operands have same number of elements.

Other operands should be listed in NonVecOp.

Definition at line 4899 of file LegalizerHelper.cpp.

References llvm::LLT::getNumElements(), llvm::is_contained(), llvm::LLT::isVector(), MI, MRI, and OpIdx.

Referenced by llvm::LegalizerHelper::fewerElementsVectorMultiEltType().

◆ isLibCallInTailPosition()

bool isLibCallInTailPosition	(	const CallLowering::ArgInfo &	Result,
		MachineInstr &	MI,
		const TargetInstrInfo &	TII,
		MachineRegisterInfo &	MRI )

static

True if an instruction is in tail position in its caller.

Intended for legalizing libcalls as tail calls when possible.

Definition at line 518 of file LegalizerHelper.cpp.

References F, llvm::Register::isPhysical(), llvm::Register::isVirtual(), MBB, MI, MRI, llvm::Next, llvm::next_nodbg(), and TII.

Referenced by llvm::createLibcall(), and llvm::createMemLibcall().

◆ isNonZeroModBitWidthOrUndef()

bool isNonZeroModBitWidthOrUndef	(	const MachineRegisterInfo &	MRI,
		Register	Reg,
		unsigned	BW )

static

Definition at line 7678 of file LegalizerHelper.cpp.

References llvm::CallingConv::C, llvm::dyn_cast_or_null(), llvm::ConstantInt::getValue(), llvm::matchUnaryPredicate(), MRI, Reg, and llvm::APInt::urem().

Referenced by llvm::TargetLowering::expandFunnelShift(), expandVPFunnelShift(), llvm::LegalizerHelper::lowerFunnelShiftAsShifts(), and llvm::LegalizerHelper::lowerFunnelShiftWithInverse().

◆ loweri64tof16ITOFP()

LegalizerHelper::LegalizeResult loweri64tof16ITOFP	(	MachineInstr &	MI,
		Register	Dst,
		LLT	DstTy,
		Register	Src,
		LLT	SrcTy,
		MachineIRBuilder &	MIRBuilder )

static

i64->fp16 itofp can be lowered to i64->f64,f64->f32,f32->f16.

We cannot convert fpround f64->f16 without double-rounding, so we manually perform the lowering here where we know it is valid.

Definition at line 8119 of file LegalizerHelper.cpp.

References llvm::MachineIRBuilder::buildFPTrunc(), llvm::MachineIRBuilder::buildSITOFP(), llvm::MachineIRBuilder::buildUITOFP(), llvm::LLT::changeElementSize(), llvm::LegalizerHelper::Legalized, llvm::M1(), and MI.

Referenced by llvm::LegalizerHelper::lowerSITOFP(), and llvm::LegalizerHelper::lowerUITOFP().

◆ makeDstOps()

void makeDstOps	(	SmallVectorImpl< DstOp > &	DstOps,
		LLT	Ty,
		unsigned	NumElts )

static

Fill DstOps with DstOps that have same number of elements combined as the Ty.

These DstOps have either scalar type when NumElts = 1 or are vectors with NumElts elements. When Ty.getNumElements() is not multiple of NumElts last DstOp (leftover) has fewer then NumElts elements.

Definition at line 4937 of file LegalizerHelper.cpp.

References assert(), llvm::LLT::fixed_vector(), llvm::LLT::getElementType(), getNarrowTypeBreakDown(), llvm::LLT::isValid(), and llvm::SmallVectorTemplateBase< T, bool >::push_back().

Referenced by llvm::LegalizerHelper::fewerElementsVectorMultiEltType(), and llvm::LegalizerHelper::fewerElementsVectorPhi().

◆ minMaxToCompare()

CmpInst::Predicate minMaxToCompare ( unsigned Opc )

static

Definition at line 8549 of file LegalizerHelper.cpp.

References llvm::CmpInst::ICMP_SGT, llvm::CmpInst::ICMP_SLT, llvm::CmpInst::ICMP_UGT, llvm::CmpInst::ICMP_ULT, llvm_unreachable, and Opc.

Referenced by llvm::LegalizerHelper::lowerMinMax().

◆ shouldLowerMemFuncForSize()

bool shouldLowerMemFuncForSize ( const MachineFunction & MF )

static

Definition at line 10124 of file LegalizerHelper.cpp.

References llvm::MachineFunction::getFunction(), llvm::MachineFunction::getTarget(), llvm::TargetMachine::getTargetTriple(), llvm::Function::hasMinSize(), llvm::Function::hasOptSize(), and llvm::Triple::isOSDarwin().

Referenced by getMemcpyLoadsAndStores(), getMemmoveLoadsAndStores(), getMemsetStores(), and llvm::LegalizerHelper::lowerMemCpyFamily().

◆ simpleLibcall()

LegalizerHelper::LegalizeResult simpleLibcall	(	MachineInstr &	MI,
		MachineIRBuilder &	MIRBuilder,
		unsigned	Size,
		Type *	OpType,
		LostDebugLocObserver &	LocObserver )

static

Definition at line 644 of file LegalizerHelper.cpp.

References llvm::createLibcall(), llvm::drop_begin(), getRTLibDesc(), llvm::LegalizeActions::Libcall, MI, and Size.

Referenced by llvm::LegalizerHelper::libcall().

◆ SwapN()

MachineInstrBuilder SwapN	(	unsigned	N,
		DstOp	Dst,
		MachineIRBuilder &	B,
		MachineInstrBuilder	Src,
		const APInt &	Mask )

static

Definition at line 9563 of file LegalizerHelper.cpp.

References B(), LHS, N, and RHS.

Referenced by llvm::LegalizerHelper::lowerBitreverse().

Macros

Functions

Macro Definition Documentation

◆ DEBUG_TYPE

◆ LCALL5

◆ LCALLS

◆ RTLIBCASE

◆ RTLIBCASE_CMP

◆ RTLIBCASE_INT

Function Documentation

◆ broadcastSrcOp()

◆ buildBitFieldInsert()

◆ clampVectorIndex()

◆ conversionLibcall()

◆ createAtomicLibcall()

◆ emitLoadFromConstantPool()

◆ findGISelOptimalMemOpLowering()

◆ getBitcastWiderVectorElementOffset()

◆ getConvRTLibDesc()

◆ getFCMPLibcallDesc()

◆ getFloatTypeForLLT()

◆ getMemsetValue()

◆ getNarrowTypeBreakDown()

◆ getOutlineAtomicLibcall()

◆ getRTLibDesc()

◆ getStateLibraryFunctionFor()

◆ getUnmergePieces()

◆ getUnmergeResults()

◆ hasSameNumEltsOnAllVectorOperands()

◆ isLibCallInTailPosition()

◆ isNonZeroModBitWidthOrUndef()

◆ loweri64tof16ITOFP()

◆ makeDstOps()

◆ minMaxToCompare()

◆ shouldLowerMemFuncForSize()

◆ simpleLibcall()

◆ SwapN()