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//===- X86LegalizerInfo.cpp --------------------------------------*- C++ -*-==//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
/// \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/ValueTypes.h"
#include "llvm/IR/DerivedTypes.h"
#include "llvm/IR/Type.h"
#include "llvm/Target/TargetOpcodes.h"
using namespace llvm;
using namespace TargetOpcode;
#ifndef LLVM_BUILD_GLOBAL_ISEL
#error "You shouldn't build this"
#endif
X86LegalizerInfo::X86LegalizerInfo(const X86Subtarget &STI,
const X86TargetMachine &TM)
: Subtarget(STI), TM(TM) {
setLegalizerInfo32bit();
setLegalizerInfo64bit();
setLegalizerInfoSSE1();
setLegalizerInfoSSE2();
computeTables();
}
void X86LegalizerInfo::setLegalizerInfo32bit() {
if (Subtarget.is64Bit())
return;
const LLT p0 = LLT::pointer(0, 32);
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);
for (unsigned BinOp : {G_ADD, G_SUB})
for (auto Ty : {s8, s16, s32})
setAction({BinOp, Ty}, Legal);
for (unsigned MemOp : {G_LOAD, G_STORE}) {
for (auto Ty : {s8, s16, s32, p0})
setAction({MemOp, Ty}, Legal);
// And everything's fine in addrspace 0.
setAction({MemOp, 1, p0}, Legal);
}
// Pointer-handling
setAction({G_FRAME_INDEX, p0}, Legal);
// Constants
for (auto Ty : {s8, s16, s32, p0})
setAction({TargetOpcode::G_CONSTANT, Ty}, Legal);
setAction({TargetOpcode::G_CONSTANT, s1}, WidenScalar);
setAction({TargetOpcode::G_CONSTANT, s64}, NarrowScalar);
}
void X86LegalizerInfo::setLegalizerInfo64bit() {
if (!Subtarget.is64Bit())
return;
const LLT p0 = LLT::pointer(0, TM.getPointerSize() * 8);
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);
for (unsigned BinOp : {G_ADD, G_SUB})
for (auto Ty : {s8, s16, s32, s64})
setAction({BinOp, Ty}, Legal);
for (unsigned MemOp : {G_LOAD, G_STORE}) {
for (auto Ty : {s8, s16, s32, s64, p0})
setAction({MemOp, Ty}, Legal);
// And everything's fine in addrspace 0.
setAction({MemOp, 1, p0}, Legal);
}
// Pointer-handling
setAction({G_FRAME_INDEX, p0}, Legal);
// Constants
for (auto Ty : {s8, s16, s32, s64, p0})
setAction({TargetOpcode::G_CONSTANT, Ty}, Legal);
setAction({TargetOpcode::G_CONSTANT, s1}, WidenScalar);
}
void X86LegalizerInfo::setLegalizerInfoSSE1() {
if (!Subtarget.hasSSE1())
return;
const LLT s32 = LLT::scalar(32);
const LLT v4s32 = LLT::vector(4, 32);
const LLT v2s64 = LLT::vector(2, 64);
for (unsigned BinOp : {G_FADD, G_FSUB, G_FMUL, G_FDIV})
for (auto Ty : {s32, v4s32})
setAction({BinOp, Ty}, Legal);
for (unsigned MemOp : {G_LOAD, G_STORE})
for (auto Ty : {v4s32, v2s64})
setAction({MemOp, Ty}, Legal);
}
void X86LegalizerInfo::setLegalizerInfoSSE2() {
if (!Subtarget.hasSSE2())
return;
const LLT s64 = LLT::scalar(64);
const LLT v4s32 = LLT::vector(4, 32);
const LLT v2s64 = LLT::vector(2, 64);
for (unsigned BinOp : {G_FADD, G_FSUB, G_FMUL, G_FDIV})
for (auto Ty : {s64, v2s64})
setAction({BinOp, Ty}, Legal);
for (unsigned BinOp : {G_ADD, G_SUB})
for (auto Ty : {v4s32})
setAction({BinOp, Ty}, Legal);
}
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