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//===- 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, G_MUL})
.legalFor({s32})
.clampScalar(0, s32, s32);
getActionDefinitionsBuilder({G_UADDO, G_UADDE, G_USUBO, G_USUBE, G_UMULO})
.lowerFor({{s32, s1}});
getActionDefinitionsBuilder(G_UMULH)
.legalFor({s32})
.maxScalar(0, s32);
getActionDefinitionsBuilder({G_LOAD, G_STORE})
.legalForTypesWithMemDesc({{s32, p0, 8, 8},
{s32, p0, 16, 8},
{s32, p0, 32, 8},
{s64, p0, 64, 8},
{p0, p0, 32, 8}})
.minScalar(0, s32);
getActionDefinitionsBuilder(G_UNMERGE_VALUES)
.legalFor({{s32, s64}});
getActionDefinitionsBuilder(G_MERGE_VALUES)
.legalFor({{s64, s32}});
getActionDefinitionsBuilder({G_ZEXTLOAD, G_SEXTLOAD})
.legalForTypesWithMemDesc({{s32, p0, 8, 8},
{s32, p0, 16, 8}})
.minScalar(0, s32);
getActionDefinitionsBuilder(G_SELECT)
.legalForCartesianProduct({p0, s32, s64}, {s32})
.minScalar(0, s32)
.minScalar(1, s32);
getActionDefinitionsBuilder(G_BRCOND)
.legalFor({s32})
.minScalar(0, s32);
getActionDefinitionsBuilder(G_PHI)
.legalFor({p0, s32, s64})
.minScalar(0, 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)
.legalForCartesianProduct({s32}, {s32, p0})
.clampScalar(1, 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});
// FP instructions
getActionDefinitionsBuilder(G_FCONSTANT)
.legalFor({s32, s64});
getActionDefinitionsBuilder({G_FADD, G_FSUB, G_FMUL, G_FDIV, G_FABS, G_FSQRT})
.legalFor({s32, s64});
getActionDefinitionsBuilder(G_FCMP)
.legalFor({{s32, s32}, {s32, s64}})
.minScalar(0, s32);
getActionDefinitionsBuilder({G_FCEIL, G_FFLOOR})
.libcallFor({s32, s64});
getActionDefinitionsBuilder(G_FPEXT)
.legalFor({{s64, s32}});
getActionDefinitionsBuilder(G_FPTRUNC)
.legalFor({{s32, s64}});
// FP to int conversion instructions
getActionDefinitionsBuilder(G_FPTOSI)
.legalForCartesianProduct({s32}, {s64, s32})
.libcallForCartesianProduct({s64}, {s64, s32})
.minScalar(0, s32);
getActionDefinitionsBuilder(G_FPTOUI)
.libcallForCartesianProduct({s64}, {s64, s32})
.minScalar(0, s32);
// Int to FP conversion instructions
getActionDefinitionsBuilder(G_SITOFP)
.legalForCartesianProduct({s64, s32}, {s32})
.libcallForCartesianProduct({s64, s32}, {s64})
.minScalar(1, s32);
getActionDefinitionsBuilder(G_UITOFP)
.libcallForCartesianProduct({s64, s32}, {s64})
.minScalar(1, s32);
computeTables();
verify(*ST.getInstrInfo());
}
bool MipsLegalizerInfo::legalizeCustom(MachineInstr &MI,
MachineRegisterInfo &MRI,
MachineIRBuilder &MIRBuilder,
GISelChangeObserver &Observer) const {
using namespace TargetOpcode;
MIRBuilder.setInstr(MI);
return false;
}
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