class LegalizerHelper

Declaration

class LegalizerHelper { /* full declaration omitted */ };

Declared at: llvm/include/llvm/CodeGen/GlobalISel/LegalizerHelper.h:36

Member Variables

public llvm::MachineIRBuilder& MIRBuilder

Expose MIRBuilder so clients can set their own RecordInsertInstruction functions

Method Overview

• public LegalizerHelper(llvm::MachineFunction & MF, const llvm::LegalizerInfo & LI, llvm::GISelChangeObserver & Observer, llvm::MachineIRBuilder & B)
• public LegalizerHelper(llvm::MachineFunction & MF, llvm::GISelChangeObserver & Observer, llvm::MachineIRBuilder & B)
• public llvm::LegalizerHelper::LegalizeResult fewerElementsVector(llvm::MachineInstr & MI, unsigned int TypeIdx, llvm::LLT NarrowTy)
• public llvm::LegalizerHelper::LegalizeResult fewerElementsVectorBasic(llvm::MachineInstr & MI, unsigned int TypeIdx, llvm::LLT NarrowTy)
• public llvm::LegalizerHelper::LegalizeResult fewerElementsVectorBuildVector(llvm::MachineInstr & MI, unsigned int TypeIdx, llvm::LLT NarrowTy)
• public llvm::LegalizerHelper::LegalizeResult fewerElementsVectorCasts(llvm::MachineInstr & MI, unsigned int TypeIdx, llvm::LLT NarrowTy)
• public llvm::LegalizerHelper::LegalizeResult fewerElementsVectorCmp(llvm::MachineInstr & MI, unsigned int TypeIdx, llvm::LLT NarrowTy)
• public llvm::LegalizerHelper::LegalizeResult fewerElementsVectorImplicitDef(llvm::MachineInstr & MI, unsigned int TypeIdx, llvm::LLT NarrowTy)
• public llvm::LegalizerHelper::LegalizeResult fewerElementsVectorMultiEltType(llvm::MachineInstr & MI, unsigned int TypeIdx, llvm::LLT NarrowTy)
• public llvm::LegalizerHelper::LegalizeResult fewerElementsVectorPhi(llvm::MachineInstr & MI, unsigned int TypeIdx, llvm::LLT NarrowTy)
• public llvm::LegalizerHelper::LegalizeResult fewerElementsVectorSelect(llvm::MachineInstr & MI, unsigned int TypeIdx, llvm::LLT NarrowTy)
• public llvm::LegalizerHelper::LegalizeResult fewerElementsVectorUnmergeValues(llvm::MachineInstr & MI, unsigned int TypeIdx, llvm::LLT NarrowTy)
• public const llvm::LegalizerInfo & getLegalizerInfo() const
• public llvm::LegalizerHelper::LegalizeResult legalizeInstrStep(llvm::MachineInstr & MI)
• public llvm::LegalizerHelper::LegalizeResult libcall(llvm::MachineInstr & MI)
• public llvm::LegalizerHelper::LegalizeResult lower(llvm::MachineInstr & MI, unsigned int TypeIdx, llvm::LLT Ty)
• public llvm::LegalizerHelper::LegalizeResult lowerBitCount(llvm::MachineInstr & MI, unsigned int TypeIdx, llvm::LLT Ty)
• public llvm::LegalizerHelper::LegalizeResult lowerBitreverse(llvm::MachineInstr & MI)
• public llvm::LegalizerHelper::LegalizeResult lowerBswap(llvm::MachineInstr & MI)
• public llvm::LegalizerHelper::LegalizeResult lowerDynStackAlloc(llvm::MachineInstr & MI)
• public llvm::LegalizerHelper::LegalizeResult lowerExtract(llvm::MachineInstr & MI)
• public llvm::LegalizerHelper::LegalizeResult lowerFCopySign(llvm::MachineInstr & MI, unsigned int TypeIdx, llvm::LLT Ty)
• public llvm::LegalizerHelper::LegalizeResult lowerFMad(llvm::MachineInstr & MI)
• public llvm::LegalizerHelper::LegalizeResult lowerFMinNumMaxNum(llvm::MachineInstr & MI)
• public llvm::LegalizerHelper::LegalizeResult lowerFPTOUI(llvm::MachineInstr & MI, unsigned int TypeIdx, llvm::LLT Ty)
• public llvm::LegalizerHelper::LegalizeResult lowerInsert(llvm::MachineInstr & MI)
• public llvm::LegalizerHelper::LegalizeResult lowerIntrinsicRound(llvm::MachineInstr & MI)
• public llvm::LegalizerHelper::LegalizeResult lowerMinMax(llvm::MachineInstr & MI, unsigned int TypeIdx, llvm::LLT Ty)
• public llvm::LegalizerHelper::LegalizeResult lowerReadRegister(llvm::MachineInstr & MI)
• public llvm::LegalizerHelper::LegalizeResult lowerSADDO_SSUBO(llvm::MachineInstr & MI)
• public llvm::LegalizerHelper::LegalizeResult lowerSITOFP(llvm::MachineInstr & MI, unsigned int TypeIdx, llvm::LLT Ty)
• public llvm::LegalizerHelper::LegalizeResult lowerShuffleVector(llvm::MachineInstr & MI)
• public llvm::LegalizerHelper::LegalizeResult lowerU64ToF32BitOps(llvm::MachineInstr & MI)
• public llvm::LegalizerHelper::LegalizeResult lowerUITOFP(llvm::MachineInstr & MI, unsigned int TypeIdx, llvm::LLT Ty)
• public llvm::LegalizerHelper::LegalizeResult lowerUnmergeValues(llvm::MachineInstr & MI)
• public llvm::LegalizerHelper::LegalizeResult moreElementsVector(llvm::MachineInstr & MI, unsigned int TypeIdx, llvm::LLT MoreTy)
• public llvm::LegalizerHelper::LegalizeResult moreElementsVectorPhi(llvm::MachineInstr & MI, unsigned int TypeIdx, llvm::LLT MoreTy)
• public llvm::LegalizerHelper::LegalizeResult narrowScalar(llvm::MachineInstr & MI, unsigned int TypeIdx, llvm::LLT NarrowTy)
• public llvm::LegalizerHelper::LegalizeResult narrowScalarBasic(llvm::MachineInstr & MI, unsigned int TypeIdx, llvm::LLT Ty)
• public llvm::LegalizerHelper::LegalizeResult narrowScalarExtract(llvm::MachineInstr & MI, unsigned int TypeIdx, llvm::LLT Ty)
• public llvm::LegalizerHelper::LegalizeResult narrowScalarInsert(llvm::MachineInstr & MI, unsigned int TypeIdx, llvm::LLT Ty)
• public llvm::LegalizerHelper::LegalizeResult narrowScalarMul(llvm::MachineInstr & MI, llvm::LLT Ty)
• public llvm::LegalizerHelper::LegalizeResult narrowScalarSelect(llvm::MachineInstr & MI, unsigned int TypeIdx, llvm::LLT Ty)
• public llvm::LegalizerHelper::LegalizeResult narrowScalarShift(llvm::MachineInstr & MI, unsigned int TypeIdx, llvm::LLT Ty)
• public llvm::LegalizerHelper::LegalizeResult narrowScalarShiftByConstant(llvm::MachineInstr & MI, const llvm::APInt & Amt, llvm::LLT HalfTy, llvm::LLT ShiftAmtTy)
• public llvm::LegalizerHelper::LegalizeResult reduceLoadStoreWidth(llvm::MachineInstr & MI, unsigned int TypeIdx, llvm::LLT NarrowTy)
• public llvm::LegalizerHelper::LegalizeResult widenScalar(llvm::MachineInstr & MI, unsigned int TypeIdx, llvm::LLT WideTy)

Methods

¶LegalizerHelper(
    llvm::MachineFunction& MF,
    const llvm::LegalizerInfo& LI,
    llvm::GISelChangeObserver& Observer,
    llvm::MachineIRBuilder& B)

Declared at: llvm/include/llvm/CodeGen/GlobalISel/LegalizerHelper.h:53

Parameters

llvm::MachineFunction& MF

const llvm::LegalizerInfo& LI

llvm::GISelChangeObserver& Observer

llvm::MachineIRBuilder& B

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

Declared at: llvm/include/llvm/CodeGen/GlobalISel/LegalizerHelper.h:51

Parameters

llvm::MachineFunction& MF

llvm::GISelChangeObserver& Observer

llvm::MachineIRBuilder& B

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

Description

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

Declared at: llvm/include/llvm/CodeGen/GlobalISel/LegalizerHelper.h:83

Parameters

llvm::MachineInstr& MI

unsigned int TypeIdx

llvm::LLT NarrowTy

¶llvm::LegalizerHelper::LegalizeResult
fewerElementsVectorBasic(llvm::MachineInstr& MI,
                         unsigned int TypeIdx,
                         llvm::LLT NarrowTy)

Description

Legalize a simple vector instruction where all operands are the same type by splitting into multiple components.

Declared at: llvm/include/llvm/CodeGen/GlobalISel/LegalizerHelper.h:179

Parameters

llvm::MachineInstr& MI

unsigned int TypeIdx

llvm::LLT NarrowTy

¶llvm::LegalizerHelper::LegalizeResult
fewerElementsVectorBuildVector(
    llvm::MachineInstr& MI,
    unsigned int TypeIdx,
    llvm::LLT NarrowTy)

Declared at: llvm/include/llvm/CodeGen/GlobalISel/LegalizerHelper.h:206

Parameters

llvm::MachineInstr& MI

unsigned int TypeIdx

llvm::LLT NarrowTy

¶llvm::LegalizerHelper::LegalizeResult
fewerElementsVectorCasts(llvm::MachineInstr& MI,
                         unsigned int TypeIdx,
                         llvm::LLT NarrowTy)

Declared at: llvm/include/llvm/CodeGen/GlobalISel/LegalizerHelper.h:188

Parameters

llvm::MachineInstr& MI

unsigned int TypeIdx

llvm::LLT NarrowTy

¶llvm::LegalizerHelper::LegalizeResult
fewerElementsVectorCmp(llvm::MachineInstr& MI,
                       unsigned int TypeIdx,
                       llvm::LLT NarrowTy)

Declared at: llvm/include/llvm/CodeGen/GlobalISel/LegalizerHelper.h:192

Parameters

llvm::MachineInstr& MI

unsigned int TypeIdx

llvm::LLT NarrowTy

¶llvm::LegalizerHelper::LegalizeResult
fewerElementsVectorImplicitDef(
    llvm::MachineInstr& MI,
    unsigned int TypeIdx,
    llvm::LLT NarrowTy)

Declared at: llvm/include/llvm/CodeGen/GlobalISel/LegalizerHelper.h:174

Parameters

llvm::MachineInstr& MI

unsigned int TypeIdx

llvm::LLT NarrowTy

¶llvm::LegalizerHelper::LegalizeResult
fewerElementsVectorMultiEltType(
    llvm::MachineInstr& MI,
    unsigned int TypeIdx,
    llvm::LLT NarrowTy)

Description

Legalize a instruction with a vector type where each operand may have a different element type. All type indexes must have the same number of elements.

Declared at: llvm/include/llvm/CodeGen/GlobalISel/LegalizerHelper.h:185

Parameters

llvm::MachineInstr& MI

unsigned int TypeIdx

llvm::LLT NarrowTy

¶llvm::LegalizerHelper::LegalizeResult
fewerElementsVectorPhi(llvm::MachineInstr& MI,
                       unsigned int TypeIdx,
                       llvm::LLT NarrowTy)

Declared at: llvm/include/llvm/CodeGen/GlobalISel/LegalizerHelper.h:197

Parameters

llvm::MachineInstr& MI

unsigned int TypeIdx

llvm::LLT NarrowTy

¶llvm::LegalizerHelper::LegalizeResult
fewerElementsVectorSelect(llvm::MachineInstr& MI,
                          unsigned int TypeIdx,
                          llvm::LLT NarrowTy)

Declared at: llvm/include/llvm/CodeGen/GlobalISel/LegalizerHelper.h:195

Parameters

llvm::MachineInstr& MI

unsigned int TypeIdx

llvm::LLT NarrowTy

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

Declared at: llvm/include/llvm/CodeGen/GlobalISel/LegalizerHelper.h:203

Parameters

llvm::MachineInstr& MI

unsigned int TypeIdx

llvm::LLT NarrowTy

¶const llvm::LegalizerInfo& getLegalizerInfo()
    const

Description

Expose LegalizerInfo so the clients can re-use.

Declared at: llvm/include/llvm/CodeGen/GlobalISel/LegalizerHelper.h:96

¶llvm::LegalizerHelper::LegalizeResult
legalizeInstrStep(llvm::MachineInstr& MI)

Description

Replace \p MI by a sequence of legal instructions that can implement the same operation. Note that this means \p MI may be deleted, so any iterator steps should be performed before calling this function. \p Helper should be initialized to the MachineFunction containing \p MI. Considered as an opaque blob, the legal code will use and define the same registers as \p MI.

Declared at: llvm/include/llvm/CodeGen/GlobalISel/LegalizerHelper.h:63

Parameters

llvm::MachineInstr& MI

¶llvm::LegalizerHelper::LegalizeResult libcall(
    llvm::MachineInstr& MI)

Description

Legalize an instruction by emiting a runtime library call instead.

Declared at: llvm/include/llvm/CodeGen/GlobalISel/LegalizerHelper.h:66

Parameters

llvm::MachineInstr& MI

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

Description

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

Declared at: llvm/include/llvm/CodeGen/GlobalISel/LegalizerHelper.h:79

Parameters

llvm::MachineInstr& MI

unsigned int TypeIdx

llvm::LLT Ty

¶llvm::LegalizerHelper::LegalizeResult
lowerBitCount(llvm::MachineInstr& MI,
              unsigned int TypeIdx,
              llvm::LLT Ty)

Declared at: llvm/include/llvm/CodeGen/GlobalISel/LegalizerHelper.h:224

Parameters

llvm::MachineInstr& MI

unsigned int TypeIdx

llvm::LLT Ty

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

Declared at: llvm/include/llvm/CodeGen/GlobalISel/LegalizerHelper.h:242

Parameters

llvm::MachineInstr& MI

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

Declared at: llvm/include/llvm/CodeGen/GlobalISel/LegalizerHelper.h:241

Parameters

llvm::MachineInstr& MI

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

Declared at: llvm/include/llvm/CodeGen/GlobalISel/LegalizerHelper.h:237

Parameters

llvm::MachineInstr& MI

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

Declared at: llvm/include/llvm/CodeGen/GlobalISel/LegalizerHelper.h:238

Parameters

llvm::MachineInstr& MI

¶llvm::LegalizerHelper::LegalizeResult
lowerFCopySign(llvm::MachineInstr& MI,
               unsigned int TypeIdx,
               llvm::LLT Ty)

Declared at: llvm/include/llvm/CodeGen/GlobalISel/LegalizerHelper.h:231

Parameters

llvm::MachineInstr& MI

unsigned int TypeIdx

llvm::LLT Ty

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

Declared at: llvm/include/llvm/CodeGen/GlobalISel/LegalizerHelper.h:233

Parameters

llvm::MachineInstr& MI

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

Declared at: llvm/include/llvm/CodeGen/GlobalISel/LegalizerHelper.h:232

Parameters

llvm::MachineInstr& MI

¶llvm::LegalizerHelper::LegalizeResult lowerFPTOUI(
    llvm::MachineInstr& MI,
    unsigned int TypeIdx,
    llvm::LLT Ty)

Declared at: llvm/include/llvm/CodeGen/GlobalISel/LegalizerHelper.h:229

Parameters

llvm::MachineInstr& MI

unsigned int TypeIdx

llvm::LLT Ty

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

Declared at: llvm/include/llvm/CodeGen/GlobalISel/LegalizerHelper.h:239

Parameters

llvm::MachineInstr& MI

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

Declared at: llvm/include/llvm/CodeGen/GlobalISel/LegalizerHelper.h:234

Parameters

llvm::MachineInstr& MI

¶llvm::LegalizerHelper::LegalizeResult lowerMinMax(
    llvm::MachineInstr& MI,
    unsigned int TypeIdx,
    llvm::LLT Ty)

Declared at: llvm/include/llvm/CodeGen/GlobalISel/LegalizerHelper.h:230

Parameters

llvm::MachineInstr& MI

unsigned int TypeIdx

llvm::LLT Ty

¶llvm::LegalizerHelper::LegalizeResult
lowerReadRegister(llvm::MachineInstr& MI)

Declared at: llvm/include/llvm/CodeGen/GlobalISel/LegalizerHelper.h:243

Parameters

llvm::MachineInstr& MI

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

Declared at: llvm/include/llvm/CodeGen/GlobalISel/LegalizerHelper.h:240

Parameters

llvm::MachineInstr& MI

¶llvm::LegalizerHelper::LegalizeResult lowerSITOFP(
    llvm::MachineInstr& MI,
    unsigned int TypeIdx,
    llvm::LLT Ty)

Declared at: llvm/include/llvm/CodeGen/GlobalISel/LegalizerHelper.h:228

Parameters

llvm::MachineInstr& MI

unsigned int TypeIdx

llvm::LLT Ty

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

Declared at: llvm/include/llvm/CodeGen/GlobalISel/LegalizerHelper.h:236

Parameters

llvm::MachineInstr& MI

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

Declared at: llvm/include/llvm/CodeGen/GlobalISel/LegalizerHelper.h:226

Parameters

llvm::MachineInstr& MI

¶llvm::LegalizerHelper::LegalizeResult lowerUITOFP(
    llvm::MachineInstr& MI,
    unsigned int TypeIdx,
    llvm::LLT Ty)

Declared at: llvm/include/llvm/CodeGen/GlobalISel/LegalizerHelper.h:227

Parameters

llvm::MachineInstr& MI

unsigned int TypeIdx

llvm::LLT Ty

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

Declared at: llvm/include/llvm/CodeGen/GlobalISel/LegalizerHelper.h:235

Parameters

llvm::MachineInstr& MI

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

Description

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

Declared at: llvm/include/llvm/CodeGen/GlobalISel/LegalizerHelper.h:88

Parameters

llvm::MachineInstr& MI

unsigned int TypeIdx

llvm::LLT MoreTy

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

Declared at: llvm/include/llvm/CodeGen/GlobalISel/LegalizerHelper.h:200

Parameters

llvm::MachineInstr& MI

unsigned int TypeIdx

llvm::LLT MoreTy

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

Description

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

Declared at: llvm/include/llvm/CodeGen/GlobalISel/LegalizerHelper.h:70

Parameters

llvm::MachineInstr& MI

unsigned int TypeIdx

llvm::LLT NarrowTy

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

Declared at: llvm/include/llvm/CodeGen/GlobalISel/LegalizerHelper.h:221

Parameters

llvm::MachineInstr& MI

unsigned int TypeIdx

llvm::LLT Ty

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

Declared at: llvm/include/llvm/CodeGen/GlobalISel/LegalizerHelper.h:218

Parameters

llvm::MachineInstr& MI

unsigned int TypeIdx

llvm::LLT Ty

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

Declared at: llvm/include/llvm/CodeGen/GlobalISel/LegalizerHelper.h:219

Parameters

llvm::MachineInstr& MI

unsigned int TypeIdx

llvm::LLT Ty

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

Declared at: llvm/include/llvm/CodeGen/GlobalISel/LegalizerHelper.h:217

Parameters

llvm::MachineInstr& MI

llvm::LLT Ty

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

Declared at: llvm/include/llvm/CodeGen/GlobalISel/LegalizerHelper.h:222

Parameters

llvm::MachineInstr& MI

unsigned int TypeIdx

llvm::LLT Ty

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

Declared at: llvm/include/llvm/CodeGen/GlobalISel/LegalizerHelper.h:216

Parameters

llvm::MachineInstr& MI

unsigned int TypeIdx

llvm::LLT Ty

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

Declared at: llvm/include/llvm/CodeGen/GlobalISel/LegalizerHelper.h:213

Parameters

llvm::MachineInstr& MI

const llvm::APInt& Amt

llvm::LLT HalfTy

llvm::LLT ShiftAmtTy

¶llvm::LegalizerHelper::LegalizeResult
reduceLoadStoreWidth(llvm::MachineInstr& MI,
                     unsigned int TypeIdx,
                     llvm::LLT NarrowTy)

Declared at: llvm/include/llvm/CodeGen/GlobalISel/LegalizerHelper.h:211

Parameters

llvm::MachineInstr& MI

unsigned int TypeIdx

llvm::LLT NarrowTy

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

Description

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).

Declared at: llvm/include/llvm/CodeGen/GlobalISel/LegalizerHelper.h:75

Parameters

llvm::MachineInstr& MI

unsigned int TypeIdx

llvm::LLT WideTy