llvm-project/llvm/lib/Target/Mips/MipsLegalizerInfo.cpp

100 lines
2.9 KiB
C++

//===- MipsLegalizerInfo.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 Mips.
/// \todo This should be generated by TableGen.
//===----------------------------------------------------------------------===//
#include "MipsLegalizerInfo.h"
#include "MipsTargetMachine.h"
#include "llvm/CodeGen/GlobalISel/LegalizerHelper.h"
using namespace llvm;
MipsLegalizerInfo::MipsLegalizerInfo(const MipsSubtarget &ST) {
using namespace TargetOpcode;
const LLT s1 = LLT::scalar(1);
const LLT s32 = LLT::scalar(32);
const LLT s64 = LLT::scalar(64);
const LLT p0 = LLT::pointer(0, 32);
getActionDefinitionsBuilder({G_ADD, G_SUB})
.legalFor({s32})
.clampScalar(0, s32, s32);
getActionDefinitionsBuilder(G_MUL)
.legalFor({s32})
.minScalar(0, s32);
getActionDefinitionsBuilder({G_UADDE, G_USUBO, G_USUBE})
.lowerFor({{s32, s1}});
getActionDefinitionsBuilder({G_LOAD, G_STORE})
.legalForTypesWithMemSize({{s32, p0, 8},
{s32, p0, 16},
{s32, p0, 32},
{p0, p0, 32}})
.minScalar(0, s32);
getActionDefinitionsBuilder({G_ZEXTLOAD, G_SEXTLOAD})
.legalForTypesWithMemSize({{s32, p0, 8},
{s32, p0, 16}})
.minScalar(0, s32);
getActionDefinitionsBuilder(G_SELECT)
.legalForCartesianProduct({p0, s32}, {s32})
.minScalar(0, s32)
.minScalar(1, s32);
getActionDefinitionsBuilder({G_AND, G_OR, G_XOR})
.legalFor({s32})
.clampScalar(0, s32, s32);
getActionDefinitionsBuilder({G_SDIV, G_SREM, G_UREM, G_UDIV})
.legalFor({s32})
.minScalar(0, s32)
.libcallFor({s64});
getActionDefinitionsBuilder({G_SHL, G_ASHR, G_LSHR})
.legalFor({s32, s32})
.minScalar(1, s32);
getActionDefinitionsBuilder(G_ICMP)
.legalFor({{s32, s32}})
.minScalar(0, s32);
getActionDefinitionsBuilder(G_CONSTANT)
.legalFor({s32})
.clampScalar(0, s32, s32);
getActionDefinitionsBuilder(G_GEP)
.legalFor({{p0, s32}});
getActionDefinitionsBuilder(G_FRAME_INDEX)
.legalFor({p0});
getActionDefinitionsBuilder(G_GLOBAL_VALUE)
.legalFor({p0});
computeTables();
verify(*ST.getInstrInfo());
}
bool MipsLegalizerInfo::legalizeCustom(MachineInstr &MI,
MachineRegisterInfo &MRI,
MachineIRBuilder &MIRBuilder,
GISelChangeObserver &Observer) const {
using namespace TargetOpcode;
MIRBuilder.setInstr(MI);
return false;
}