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|
//===- X86LegalizerInfo.cpp --------------------------------------*- C++ -*-==//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
/// \file
/// This file implements the targeting of the Machinelegalizer class for X86.
/// \todo This should be generated by TableGen.
//===----------------------------------------------------------------------===//
#include "X86LegalizerInfo.h"
#include "X86Subtarget.h"
#include "X86TargetMachine.h"
#include "llvm/CodeGen/GlobalISel/LegalizerHelper.h"
#include "llvm/CodeGen/TargetOpcodes.h"
#include "llvm/CodeGen/ValueTypes.h"
#include "llvm/IR/DerivedTypes.h"
#include "llvm/IR/Type.h"
using namespace llvm;
using namespace TargetOpcode;
using namespace LegalizeActions;
using namespace LegalityPredicates;
X86LegalizerInfo::X86LegalizerInfo(const X86Subtarget &STI,
const X86TargetMachine &TM)
: Subtarget(STI) {
bool Is64Bit = Subtarget.is64Bit();
bool HasSSE1 = Subtarget.hasSSE1();
bool HasSSE2 = Subtarget.hasSSE2();
bool HasSSE41 = Subtarget.hasSSE41();
bool HasAVX = Subtarget.hasAVX();
bool HasAVX2 = Subtarget.hasAVX2();
bool HasAVX512 = Subtarget.hasAVX512();
bool HasVLX = Subtarget.hasVLX();
bool HasDQI = Subtarget.hasAVX512() && Subtarget.hasDQI();
bool HasBWI = Subtarget.hasAVX512() && Subtarget.hasBWI();
const LLT p0 = LLT::pointer(0, TM.getPointerSizeInBits(0));
const LLT s1 = LLT::scalar(1);
const LLT s8 = LLT::scalar(8);
const LLT s16 = LLT::scalar(16);
const LLT s32 = LLT::scalar(32);
const LLT s64 = LLT::scalar(64);
const LLT s80 = LLT::scalar(80);
const LLT s128 = LLT::scalar(128);
const LLT sMaxScalar = Subtarget.is64Bit() ? s64 : s32;
const LLT v2s32 = LLT::fixed_vector(2, 32);
const LLT v4s8 = LLT::fixed_vector(4, 8);
const LLT v16s8 = LLT::fixed_vector(16, 8);
const LLT v8s16 = LLT::fixed_vector(8, 16);
const LLT v4s32 = LLT::fixed_vector(4, 32);
const LLT v2s64 = LLT::fixed_vector(2, 64);
const LLT v2p0 = LLT::fixed_vector(2, p0);
const LLT v32s8 = LLT::fixed_vector(32, 8);
const LLT v16s16 = LLT::fixed_vector(16, 16);
const LLT v8s32 = LLT::fixed_vector(8, 32);
const LLT v4s64 = LLT::fixed_vector(4, 64);
const LLT v4p0 = LLT::fixed_vector(4, p0);
const LLT v64s8 = LLT::fixed_vector(64, 8);
const LLT v32s16 = LLT::fixed_vector(32, 16);
const LLT v16s32 = LLT::fixed_vector(16, 32);
const LLT v8s64 = LLT::fixed_vector(8, 64);
// todo: AVX512 bool vector predicate types
// implicit/constants
getActionDefinitionsBuilder(G_IMPLICIT_DEF)
.legalIf([=](const LegalityQuery &Query) -> bool {
// 32/64-bits needs support for s64/s128 to handle cases:
// s64 = EXTEND (G_IMPLICIT_DEF s32) -> s64 = G_IMPLICIT_DEF
// s128 = EXTEND (G_IMPLICIT_DEF s32/s64) -> s128 = G_IMPLICIT_DEF
return typeInSet(0, {p0, s1, s8, s16, s32, s64})(Query) ||
(Is64Bit && typeInSet(0, {s128})(Query));
});
getActionDefinitionsBuilder(G_CONSTANT)
.legalIf([=](const LegalityQuery &Query) -> bool {
return typeInSet(0, {p0, s8, s16, s32})(Query) ||
(Is64Bit && typeInSet(0, {s64})(Query));
})
.widenScalarToNextPow2(0, /*Min=*/8)
.clampScalar(0, s8, sMaxScalar);
// merge/unmerge
for (unsigned Op : {G_MERGE_VALUES, G_UNMERGE_VALUES}) {
unsigned BigTyIdx = Op == G_MERGE_VALUES ? 0 : 1;
unsigned LitTyIdx = Op == G_MERGE_VALUES ? 1 : 0;
getActionDefinitionsBuilder(Op)
.widenScalarToNextPow2(LitTyIdx, /*Min=*/8)
.widenScalarToNextPow2(BigTyIdx, /*Min=*/16)
.minScalar(LitTyIdx, s8)
.minScalar(BigTyIdx, s32)
.legalIf([=](const LegalityQuery &Q) {
switch (Q.Types[BigTyIdx].getSizeInBits()) {
case 16:
case 32:
case 64:
case 128:
case 256:
case 512:
break;
default:
return false;
}
switch (Q.Types[LitTyIdx].getSizeInBits()) {
case 8:
case 16:
case 32:
case 64:
case 128:
case 256:
return true;
default:
return false;
}
});
}
// integer addition/subtraction
getActionDefinitionsBuilder({G_ADD, G_SUB})
.legalIf([=](const LegalityQuery &Query) -> bool {
if (typeInSet(0, {s8, s16, s32})(Query))
return true;
if (Is64Bit && typeInSet(0, {s64})(Query))
return true;
if (HasSSE2 && typeInSet(0, {v16s8, v8s16, v4s32, v2s64})(Query))
return true;
if (HasAVX2 && typeInSet(0, {v32s8, v16s16, v8s32, v4s64})(Query))
return true;
if (HasAVX512 && typeInSet(0, {v16s32, v8s64})(Query))
return true;
if (HasBWI && typeInSet(0, {v64s8, v32s16})(Query))
return true;
return false;
})
.clampMinNumElements(0, s8, 16)
.clampMinNumElements(0, s16, 8)
.clampMinNumElements(0, s32, 4)
.clampMinNumElements(0, s64, 2)
.clampMaxNumElements(0, s8, HasBWI ? 64 : (HasAVX2 ? 32 : 16))
.clampMaxNumElements(0, s16, HasBWI ? 32 : (HasAVX2 ? 16 : 8))
.clampMaxNumElements(0, s32, HasAVX512 ? 16 : (HasAVX2 ? 8 : 4))
.clampMaxNumElements(0, s64, HasAVX512 ? 8 : (HasAVX2 ? 4 : 2))
.widenScalarToNextPow2(0, /*Min=*/32)
.clampScalar(0, s8, sMaxScalar)
.scalarize(0);
getActionDefinitionsBuilder({G_UADDE, G_UADDO, G_USUBE, G_USUBO})
.legalIf([=](const LegalityQuery &Query) -> bool {
return typePairInSet(0, 1, {{s8, s1}, {s16, s1}, {s32, s1}})(Query) ||
(Is64Bit && typePairInSet(0, 1, {{s64, s1}})(Query));
})
.widenScalarToNextPow2(0, /*Min=*/32)
.clampScalar(0, s8, sMaxScalar)
.clampScalar(1, s1, s1)
.scalarize(0);
// integer multiply
getActionDefinitionsBuilder(G_MUL)
.legalIf([=](const LegalityQuery &Query) -> bool {
if (typeInSet(0, {s8, s16, s32})(Query))
return true;
if (Is64Bit && typeInSet(0, {s64})(Query))
return true;
if (HasSSE2 && typeInSet(0, {v8s16})(Query))
return true;
if (HasSSE41 && typeInSet(0, {v4s32})(Query))
return true;
if (HasAVX2 && typeInSet(0, {v16s16, v8s32})(Query))
return true;
if (HasAVX512 && typeInSet(0, {v16s32})(Query))
return true;
if (HasDQI && typeInSet(0, {v8s64})(Query))
return true;
if (HasDQI && HasVLX && typeInSet(0, {v2s64, v4s64})(Query))
return true;
if (HasBWI && typeInSet(0, {v32s16})(Query))
return true;
return false;
})
.clampMinNumElements(0, s16, 8)
.clampMinNumElements(0, s32, 4)
.clampMinNumElements(0, s64, HasVLX ? 2 : 8)
.clampMaxNumElements(0, s16, HasBWI ? 32 : (HasAVX2 ? 16 : 8))
.clampMaxNumElements(0, s32, HasAVX512 ? 16 : (HasAVX2 ? 8 : 4))
.clampMaxNumElements(0, s64, 8)
.widenScalarToNextPow2(0, /*Min=*/32)
.clampScalar(0, s8, sMaxScalar)
.scalarize(0);
getActionDefinitionsBuilder({G_SMULH, G_UMULH})
.legalIf([=](const LegalityQuery &Query) -> bool {
return typeInSet(0, {s8, s16, s32})(Query) ||
(Is64Bit && typeInSet(0, {s64})(Query));
})
.widenScalarToNextPow2(0, /*Min=*/32)
.clampScalar(0, s8, sMaxScalar)
.scalarize(0);
// integer divisions
getActionDefinitionsBuilder({G_SDIV, G_SREM, G_UDIV, G_UREM})
.legalIf([=](const LegalityQuery &Query) -> bool {
return typeInSet(0, {s8, s16, s32})(Query) ||
(Is64Bit && typeInSet(0, {s64})(Query));
})
.clampScalar(0, s8, sMaxScalar);
// integer shifts
getActionDefinitionsBuilder({G_SHL, G_LSHR, G_ASHR})
.legalIf([=](const LegalityQuery &Query) -> bool {
return typePairInSet(0, 1, {{s8, s8}, {s16, s8}, {s32, s8}})(Query) ||
(Is64Bit && typePairInSet(0, 1, {{s64, s8}})(Query));
})
.clampScalar(0, s8, sMaxScalar)
.clampScalar(1, s8, s8);
// integer logic
getActionDefinitionsBuilder({G_AND, G_OR, G_XOR})
.legalIf([=](const LegalityQuery &Query) -> bool {
if (typeInSet(0, {s8, s16, s32})(Query))
return true;
if (Is64Bit && typeInSet(0, {s64})(Query))
return true;
if (HasSSE2 && typeInSet(0, {v16s8, v8s16, v4s32, v2s64})(Query))
return true;
if (HasAVX && typeInSet(0, {v32s8, v16s16, v8s32, v4s64})(Query))
return true;
if (HasAVX512 && typeInSet(0, {v64s8, v32s16, v16s32, v8s64})(Query))
return true;
return false;
})
.clampMinNumElements(0, s8, 16)
.clampMinNumElements(0, s16, 8)
.clampMinNumElements(0, s32, 4)
.clampMinNumElements(0, s64, 2)
.clampMaxNumElements(0, s8, HasAVX512 ? 64 : (HasAVX ? 32 : 16))
.clampMaxNumElements(0, s16, HasAVX512 ? 32 : (HasAVX ? 16 : 8))
.clampMaxNumElements(0, s32, HasAVX512 ? 16 : (HasAVX ? 8 : 4))
.clampMaxNumElements(0, s64, HasAVX512 ? 8 : (HasAVX ? 4 : 2))
.widenScalarToNextPow2(0, /*Min=*/32)
.clampScalar(0, s8, sMaxScalar)
.scalarize(0);
// integer comparison
const std::initializer_list<LLT> IntTypes32 = {s8, s16, s32, p0};
const std::initializer_list<LLT> IntTypes64 = {s8, s16, s32, s64, p0};
getActionDefinitionsBuilder(G_ICMP)
.legalForCartesianProduct({s8}, Is64Bit ? IntTypes64 : IntTypes32)
.clampScalar(0, s8, s8);
// bswap
getActionDefinitionsBuilder(G_BSWAP)
.legalIf([=](const LegalityQuery &Query) {
return Query.Types[0] == s32 ||
(Subtarget.is64Bit() && Query.Types[0] == s64);
})
.widenScalarToNextPow2(0, /*Min=*/32)
.clampScalar(0, s32, sMaxScalar);
// popcount
getActionDefinitionsBuilder(G_CTPOP)
.legalIf([=](const LegalityQuery &Query) -> bool {
return Subtarget.hasPOPCNT() &&
(typePairInSet(0, 1, {{s16, s16}, {s32, s32}})(Query) ||
(Is64Bit && typePairInSet(0, 1, {{s64, s64}})(Query)));
})
.widenScalarToNextPow2(1, /*Min=*/16)
.clampScalar(1, s16, sMaxScalar)
.scalarSameSizeAs(0, 1);
// count leading zeros (LZCNT)
getActionDefinitionsBuilder(G_CTLZ)
.legalIf([=](const LegalityQuery &Query) -> bool {
return Subtarget.hasLZCNT() &&
(typePairInSet(0, 1, {{s16, s16}, {s32, s32}})(Query) ||
(Is64Bit && typePairInSet(0, 1, {{s64, s64}})(Query)));
})
.widenScalarToNextPow2(1, /*Min=*/16)
.clampScalar(1, s16, sMaxScalar)
.scalarSameSizeAs(0, 1);
// count trailing zeros
getActionDefinitionsBuilder({G_CTTZ_ZERO_UNDEF, G_CTTZ})
.legalIf([=](const LegalityQuery &Query) -> bool {
return (Query.Opcode == G_CTTZ_ZERO_UNDEF || Subtarget.hasBMI()) &&
(typePairInSet(0, 1, {{s16, s16}, {s32, s32}})(Query) ||
(Is64Bit && typePairInSet(0, 1, {{s64, s64}})(Query)));
})
.widenScalarToNextPow2(1, /*Min=*/16)
.clampScalar(1, s16, sMaxScalar)
.scalarSameSizeAs(0, 1);
// control flow
getActionDefinitionsBuilder(G_PHI)
.legalIf([=](const LegalityQuery &Query) -> bool {
return typeInSet(0, {s8, s16, s32, p0})(Query) ||
(Is64Bit && typeInSet(0, {s64})(Query)) ||
(HasSSE1 && typeInSet(0, {v16s8, v8s16, v4s32, v2s64})(Query)) ||
(HasAVX && typeInSet(0, {v32s8, v16s16, v8s32, v4s64})(Query)) ||
(HasAVX512 &&
typeInSet(0, {v64s8, v32s16, v16s32, v8s64})(Query));
})
.clampMinNumElements(0, s8, 16)
.clampMinNumElements(0, s16, 8)
.clampMinNumElements(0, s32, 4)
.clampMinNumElements(0, s64, 2)
.clampMaxNumElements(0, s8, HasAVX512 ? 64 : (HasAVX ? 32 : 16))
.clampMaxNumElements(0, s16, HasAVX512 ? 32 : (HasAVX ? 16 : 8))
.clampMaxNumElements(0, s32, HasAVX512 ? 16 : (HasAVX ? 8 : 4))
.clampMaxNumElements(0, s64, HasAVX512 ? 8 : (HasAVX ? 4 : 2))
.widenScalarToNextPow2(0, /*Min=*/32)
.clampScalar(0, s8, sMaxScalar)
.scalarize(0);
getActionDefinitionsBuilder(G_BRCOND).legalFor({s1});
// pointer handling
const std::initializer_list<LLT> PtrTypes32 = {s1, s8, s16, s32};
const std::initializer_list<LLT> PtrTypes64 = {s1, s8, s16, s32, s64};
getActionDefinitionsBuilder(G_PTRTOINT)
.legalForCartesianProduct(Is64Bit ? PtrTypes64 : PtrTypes32, {p0})
.maxScalar(0, sMaxScalar)
.widenScalarToNextPow2(0, /*Min*/ 8);
getActionDefinitionsBuilder(G_INTTOPTR).legalFor({{p0, sMaxScalar}});
getActionDefinitionsBuilder(G_PTR_ADD)
.legalIf([=](const LegalityQuery &Query) -> bool {
return typePairInSet(0, 1, {{p0, s32}})(Query) ||
(Is64Bit && typePairInSet(0, 1, {{p0, s64}})(Query));
})
.widenScalarToNextPow2(1, /*Min*/ 32)
.clampScalar(1, s32, sMaxScalar);
getActionDefinitionsBuilder({G_FRAME_INDEX, G_GLOBAL_VALUE}).legalFor({p0});
// load/store: add more corner cases
for (unsigned Op : {G_LOAD, G_STORE}) {
auto &Action = getActionDefinitionsBuilder(Op);
Action.legalForTypesWithMemDesc({{s8, p0, s1, 1},
{s8, p0, s8, 1},
{s16, p0, s8, 1},
{s16, p0, s16, 1},
{s32, p0, s8, 1},
{s32, p0, s16, 1},
{s32, p0, s32, 1},
{s80, p0, s80, 1},
{p0, p0, p0, 1},
{v4s8, p0, v4s8, 1}});
if (Is64Bit)
Action.legalForTypesWithMemDesc({{s64, p0, s8, 1},
{s64, p0, s16, 1},
{s64, p0, s32, 1},
{s64, p0, s64, 1},
{v2s32, p0, v2s32, 1}});
if (HasSSE1)
Action.legalForTypesWithMemDesc({{v16s8, p0, v16s8, 1},
{v8s16, p0, v8s16, 1},
{v4s32, p0, v4s32, 1},
{v2s64, p0, v2s64, 1},
{v2p0, p0, v2p0, 1}});
if (HasAVX)
Action.legalForTypesWithMemDesc({{v32s8, p0, v32s8, 1},
{v16s16, p0, v16s16, 1},
{v8s32, p0, v8s32, 1},
{v4s64, p0, v4s64, 1},
{v4p0, p0, v4p0, 1}});
if (HasAVX512)
Action.legalForTypesWithMemDesc({{v64s8, p0, v64s8, 1},
{v32s16, p0, v32s16, 1},
{v16s32, p0, v16s32, 1},
{v8s64, p0, v8s64, 1}});
Action.widenScalarToNextPow2(0, /*Min=*/8).clampScalar(0, s8, sMaxScalar);
}
for (unsigned Op : {G_SEXTLOAD, G_ZEXTLOAD}) {
auto &Action = getActionDefinitionsBuilder(Op);
Action.legalForTypesWithMemDesc({{s16, p0, s8, 1},
{s32, p0, s8, 1},
{s32, p0, s16, 1}});
if (Is64Bit)
Action.legalForTypesWithMemDesc({{s64, p0, s8, 1},
{s64, p0, s16, 1},
{s64, p0, s32, 1}});
// TODO - SSE41/AVX2/AVX512F/AVX512BW vector extensions
}
// sext, zext, and anyext
getActionDefinitionsBuilder({G_SEXT, G_ZEXT, G_ANYEXT})
.legalIf([=](const LegalityQuery &Query) {
return typeInSet(0, {s8, s16, s32})(Query) ||
(Query.Opcode == G_ANYEXT && Query.Types[0] == s128) ||
(Is64Bit && Query.Types[0] == s64);
})
.widenScalarToNextPow2(0, /*Min=*/8)
.clampScalar(0, s8, sMaxScalar)
.widenScalarToNextPow2(1, /*Min=*/8)
.clampScalar(1, s8, sMaxScalar);
getActionDefinitionsBuilder(G_SEXT_INREG).lower();
// fp constants
getActionDefinitionsBuilder(G_FCONSTANT)
.legalIf([=](const LegalityQuery &Query) -> bool {
return (HasSSE1 && typeInSet(0, {s32})(Query)) ||
(HasSSE2 && typeInSet(0, {s64})(Query));
});
// fp arithmetic
getActionDefinitionsBuilder({G_FADD, G_FSUB, G_FMUL, G_FDIV})
.legalIf([=](const LegalityQuery &Query) {
return (HasSSE1 && typeInSet(0, {s32, v4s32})(Query)) ||
(HasSSE2 && typeInSet(0, {s64, v2s64})(Query)) ||
(HasAVX && typeInSet(0, {v8s32, v4s64})(Query)) ||
(HasAVX512 && typeInSet(0, {v16s32, v8s64})(Query));
});
// fp comparison
getActionDefinitionsBuilder(G_FCMP)
.legalIf([=](const LegalityQuery &Query) {
return (HasSSE1 && typePairInSet(0, 1, {{s8, s32}})(Query)) ||
(HasSSE2 && typePairInSet(0, 1, {{s8, s64}})(Query));
})
.clampScalar(0, s8, s8)
.clampScalar(1, s32, HasSSE2 ? s64 : s32)
.widenScalarToNextPow2(1);
// fp conversions
getActionDefinitionsBuilder(G_FPEXT).legalIf([=](const LegalityQuery &Query) {
return (HasSSE2 && typePairInSet(0, 1, {{s64, s32}})(Query)) ||
(HasAVX && typePairInSet(0, 1, {{v4s64, v4s32}})(Query)) ||
(HasAVX512 && typePairInSet(0, 1, {{v8s64, v8s32}})(Query));
});
getActionDefinitionsBuilder(G_FPTRUNC).legalIf(
[=](const LegalityQuery &Query) {
return (HasSSE2 && typePairInSet(0, 1, {{s32, s64}})(Query)) ||
(HasAVX && typePairInSet(0, 1, {{v4s32, v4s64}})(Query)) ||
(HasAVX512 && typePairInSet(0, 1, {{v8s32, v8s64}})(Query));
});
getActionDefinitionsBuilder(G_SITOFP)
.legalIf([=](const LegalityQuery &Query) {
return (HasSSE1 &&
(typePairInSet(0, 1, {{s32, s32}})(Query) ||
(Is64Bit && typePairInSet(0, 1, {{s32, s64}})(Query)))) ||
(HasSSE2 &&
(typePairInSet(0, 1, {{s64, s32}})(Query) ||
(Is64Bit && typePairInSet(0, 1, {{s64, s64}})(Query))));
})
.clampScalar(1, s32, sMaxScalar)
.widenScalarToNextPow2(1)
.clampScalar(0, s32, HasSSE2 ? s64 : s32)
.widenScalarToNextPow2(0);
getActionDefinitionsBuilder(G_FPTOSI)
.legalIf([=](const LegalityQuery &Query) {
return (HasSSE1 &&
(typePairInSet(0, 1, {{s32, s32}})(Query) ||
(Is64Bit && typePairInSet(0, 1, {{s64, s32}})(Query)))) ||
(HasSSE2 &&
(typePairInSet(0, 1, {{s32, s64}})(Query) ||
(Is64Bit && typePairInSet(0, 1, {{s64, s64}})(Query))));
})
.clampScalar(1, s32, HasSSE2 ? s64 : s32)
.widenScalarToNextPow2(0)
.clampScalar(0, s32, sMaxScalar)
.widenScalarToNextPow2(1);
// vector ops
getActionDefinitionsBuilder({G_EXTRACT, G_INSERT})
.legalIf([=](const LegalityQuery &Query) {
unsigned SubIdx = Query.Opcode == G_EXTRACT ? 0 : 1;
unsigned FullIdx = Query.Opcode == G_EXTRACT ? 1 : 0;
return (HasAVX && typePairInSet(SubIdx, FullIdx,
{{v16s8, v32s8},
{v8s16, v16s16},
{v4s32, v8s32},
{v2s64, v4s64}})(Query)) ||
(HasAVX512 && typePairInSet(SubIdx, FullIdx,
{{v16s8, v64s8},
{v32s8, v64s8},
{v8s16, v32s16},
{v16s16, v32s16},
{v4s32, v16s32},
{v8s32, v16s32},
{v2s64, v8s64},
{v4s64, v8s64}})(Query));
});
// todo: only permit dst types up to max legal vector register size?
getActionDefinitionsBuilder(G_CONCAT_VECTORS)
.legalIf([=](const LegalityQuery &Query) {
return (HasSSE1 && typePairInSet(1, 0,
{{v16s8, v32s8},
{v8s16, v16s16},
{v4s32, v8s32},
{v2s64, v4s64}})(Query)) ||
(HasAVX && typePairInSet(1, 0,
{{v16s8, v64s8},
{v32s8, v64s8},
{v8s16, v32s16},
{v16s16, v32s16},
{v4s32, v16s32},
{v8s32, v16s32},
{v2s64, v8s64},
{v4s64, v8s64}})(Query));
});
// todo: vectors and address spaces
getActionDefinitionsBuilder(G_SELECT)
.legalFor({{s8, s32}, {s16, s32}, {s32, s32}, {s64, s32},
{p0, s32}})
.widenScalarToNextPow2(0, /*Min=*/8)
.clampScalar(0, s8, sMaxScalar)
.clampScalar(1, s32, s32);
// memory intrinsics
getActionDefinitionsBuilder({G_MEMCPY, G_MEMMOVE, G_MEMSET}).libcall();
// fp intrinsics
getActionDefinitionsBuilder(G_INTRINSIC_ROUNDEVEN)
.scalarize(0)
.minScalar(0, LLT::scalar(32))
.libcall();
getActionDefinitionsBuilder({G_FREEZE, G_CONSTANT_FOLD_BARRIER})
.legalFor({s8, s16, s32, s64, p0})
.widenScalarToNextPow2(0, /*Min=*/8)
.clampScalar(0, s8, sMaxScalar);
getLegacyLegalizerInfo().computeTables();
verify(*STI.getInstrInfo());
}
bool X86LegalizerInfo::legalizeIntrinsic(LegalizerHelper &Helper,
MachineInstr &MI) const {
return true;
}
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