116 lines
4.0 KiB
C++
116 lines
4.0 KiB
C++
//=- LoongArchInstrInfo.cpp - LoongArch Instruction Information -*- 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
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
//
|
|
// This file contains the LoongArch implementation of the TargetInstrInfo class.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
#include "LoongArchInstrInfo.h"
|
|
#include "LoongArch.h"
|
|
#include "LoongArchMachineFunctionInfo.h"
|
|
|
|
using namespace llvm;
|
|
|
|
#define GET_INSTRINFO_CTOR_DTOR
|
|
#include "LoongArchGenInstrInfo.inc"
|
|
|
|
LoongArchInstrInfo::LoongArchInstrInfo(LoongArchSubtarget &STI)
|
|
: LoongArchGenInstrInfo(LoongArch::ADJCALLSTACKDOWN,
|
|
LoongArch::ADJCALLSTACKUP) {}
|
|
|
|
void LoongArchInstrInfo::copyPhysReg(MachineBasicBlock &MBB,
|
|
MachineBasicBlock::iterator MBBI,
|
|
const DebugLoc &DL, MCRegister DstReg,
|
|
MCRegister SrcReg, bool KillSrc) const {
|
|
if (LoongArch::GPRRegClass.contains(DstReg, SrcReg)) {
|
|
BuildMI(MBB, MBBI, DL, get(LoongArch::OR), DstReg)
|
|
.addReg(SrcReg, getKillRegState(KillSrc))
|
|
.addReg(LoongArch::R0);
|
|
return;
|
|
}
|
|
|
|
// FPR->FPR copies.
|
|
unsigned Opc;
|
|
if (LoongArch::FPR32RegClass.contains(DstReg, SrcReg)) {
|
|
Opc = LoongArch::FMOV_S;
|
|
} else if (LoongArch::FPR64RegClass.contains(DstReg, SrcReg)) {
|
|
Opc = LoongArch::FMOV_D;
|
|
} else {
|
|
// TODO: support other copies.
|
|
llvm_unreachable("Impossible reg-to-reg copy");
|
|
}
|
|
|
|
BuildMI(MBB, MBBI, DL, get(Opc), DstReg)
|
|
.addReg(SrcReg, getKillRegState(KillSrc));
|
|
}
|
|
|
|
void LoongArchInstrInfo::storeRegToStackSlot(
|
|
MachineBasicBlock &MBB, MachineBasicBlock::iterator I, Register SrcReg,
|
|
bool IsKill, int FI, const TargetRegisterClass *RC,
|
|
const TargetRegisterInfo *TRI) const {
|
|
DebugLoc DL;
|
|
if (I != MBB.end())
|
|
DL = I->getDebugLoc();
|
|
MachineFunction *MF = MBB.getParent();
|
|
MachineFrameInfo &MFI = MF->getFrameInfo();
|
|
|
|
unsigned Opcode;
|
|
if (LoongArch::GPRRegClass.hasSubClassEq(RC))
|
|
Opcode = TRI->getRegSizeInBits(LoongArch::GPRRegClass) == 32
|
|
? LoongArch::ST_W
|
|
: LoongArch::ST_D;
|
|
else if (LoongArch::FPR32RegClass.hasSubClassEq(RC))
|
|
Opcode = LoongArch::FST_S;
|
|
else if (LoongArch::FPR64RegClass.hasSubClassEq(RC))
|
|
Opcode = LoongArch::FST_D;
|
|
else
|
|
llvm_unreachable("Can't store this register to stack slot");
|
|
|
|
MachineMemOperand *MMO = MF->getMachineMemOperand(
|
|
MachinePointerInfo::getFixedStack(*MF, FI), MachineMemOperand::MOStore,
|
|
MFI.getObjectSize(FI), MFI.getObjectAlign(FI));
|
|
|
|
BuildMI(MBB, I, DL, get(Opcode))
|
|
.addReg(SrcReg, getKillRegState(IsKill))
|
|
.addFrameIndex(FI)
|
|
.addImm(0)
|
|
.addMemOperand(MMO);
|
|
}
|
|
|
|
void LoongArchInstrInfo::loadRegFromStackSlot(
|
|
MachineBasicBlock &MBB, MachineBasicBlock::iterator I, Register DstReg,
|
|
int FI, const TargetRegisterClass *RC,
|
|
const TargetRegisterInfo *TRI) const {
|
|
DebugLoc DL;
|
|
if (I != MBB.end())
|
|
DL = I->getDebugLoc();
|
|
MachineFunction *MF = MBB.getParent();
|
|
MachineFrameInfo &MFI = MF->getFrameInfo();
|
|
|
|
unsigned Opcode;
|
|
if (LoongArch::GPRRegClass.hasSubClassEq(RC))
|
|
Opcode = TRI->getRegSizeInBits(LoongArch::GPRRegClass) == 32
|
|
? LoongArch::LD_W
|
|
: LoongArch::LD_D;
|
|
else if (LoongArch::FPR32RegClass.hasSubClassEq(RC))
|
|
Opcode = LoongArch::FLD_S;
|
|
else if (LoongArch::FPR64RegClass.hasSubClassEq(RC))
|
|
Opcode = LoongArch::FLD_D;
|
|
else
|
|
llvm_unreachable("Can't load this register from stack slot");
|
|
|
|
MachineMemOperand *MMO = MF->getMachineMemOperand(
|
|
MachinePointerInfo::getFixedStack(*MF, FI), MachineMemOperand::MOLoad,
|
|
MFI.getObjectSize(FI), MFI.getObjectAlign(FI));
|
|
|
|
BuildMI(MBB, I, DL, get(Opcode), DstReg)
|
|
.addFrameIndex(FI)
|
|
.addImm(0)
|
|
.addMemOperand(MMO);
|
|
}
|