llvm-6502/lib/Target/ARM/Thumb1InstrInfo.cpp
Anton Korobeynikov cd775ceff0 Move callee-saved regs spills / reloads to TFI
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@120228 91177308-0d34-0410-b5e6-96231b3b80d8
2010-11-27 23:05:03 +00:00

112 lines
4.1 KiB
C++

//===- Thumb1InstrInfo.cpp - Thumb-1 Instruction Information ----*- C++ -*-===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// This file contains the Thumb-1 implementation of the TargetInstrInfo class.
//
//===----------------------------------------------------------------------===//
#include "Thumb1InstrInfo.h"
#include "ARM.h"
#include "ARMGenInstrInfo.inc"
#include "ARMMachineFunctionInfo.h"
#include "llvm/CodeGen/MachineFrameInfo.h"
#include "llvm/CodeGen/MachineInstrBuilder.h"
#include "llvm/CodeGen/MachineRegisterInfo.h"
#include "llvm/CodeGen/MachineMemOperand.h"
#include "llvm/CodeGen/PseudoSourceValue.h"
#include "llvm/ADT/SmallVector.h"
#include "Thumb1InstrInfo.h"
using namespace llvm;
Thumb1InstrInfo::Thumb1InstrInfo(const ARMSubtarget &STI)
: ARMBaseInstrInfo(STI), RI(*this, STI) {
}
unsigned Thumb1InstrInfo::getUnindexedOpcode(unsigned Opc) const {
return 0;
}
void Thumb1InstrInfo::copyPhysReg(MachineBasicBlock &MBB,
MachineBasicBlock::iterator I, DebugLoc DL,
unsigned DestReg, unsigned SrcReg,
bool KillSrc) const {
bool tDest = ARM::tGPRRegClass.contains(DestReg);
bool tSrc = ARM::tGPRRegClass.contains(SrcReg);
unsigned Opc = ARM::tMOVgpr2gpr;
if (tDest && tSrc)
Opc = ARM::tMOVr;
else if (tSrc)
Opc = ARM::tMOVtgpr2gpr;
else if (tDest)
Opc = ARM::tMOVgpr2tgpr;
BuildMI(MBB, I, DL, get(Opc), DestReg)
.addReg(SrcReg, getKillRegState(KillSrc));
assert(ARM::GPRRegClass.contains(DestReg, SrcReg) &&
"Thumb1 can only copy GPR registers");
}
void Thumb1InstrInfo::
storeRegToStackSlot(MachineBasicBlock &MBB, MachineBasicBlock::iterator I,
unsigned SrcReg, bool isKill, int FI,
const TargetRegisterClass *RC,
const TargetRegisterInfo *TRI) const {
assert((RC == ARM::tGPRRegisterClass ||
(TargetRegisterInfo::isPhysicalRegister(SrcReg) &&
isARMLowRegister(SrcReg))) && "Unknown regclass!");
if (RC == ARM::tGPRRegisterClass ||
(TargetRegisterInfo::isPhysicalRegister(SrcReg) &&
isARMLowRegister(SrcReg))) {
DebugLoc DL;
if (I != MBB.end()) DL = I->getDebugLoc();
MachineFunction &MF = *MBB.getParent();
MachineFrameInfo &MFI = *MF.getFrameInfo();
MachineMemOperand *MMO =
MF.getMachineMemOperand(
MachinePointerInfo(PseudoSourceValue::getFixedStack(FI)),
MachineMemOperand::MOStore,
MFI.getObjectSize(FI),
MFI.getObjectAlignment(FI));
AddDefaultPred(BuildMI(MBB, I, DL, get(ARM::tSpill))
.addReg(SrcReg, getKillRegState(isKill))
.addFrameIndex(FI).addImm(0).addMemOperand(MMO));
}
}
void Thumb1InstrInfo::
loadRegFromStackSlot(MachineBasicBlock &MBB, MachineBasicBlock::iterator I,
unsigned DestReg, int FI,
const TargetRegisterClass *RC,
const TargetRegisterInfo *TRI) const {
assert((RC == ARM::tGPRRegisterClass ||
(TargetRegisterInfo::isPhysicalRegister(DestReg) &&
isARMLowRegister(DestReg))) && "Unknown regclass!");
if (RC == ARM::tGPRRegisterClass ||
(TargetRegisterInfo::isPhysicalRegister(DestReg) &&
isARMLowRegister(DestReg))) {
DebugLoc DL;
if (I != MBB.end()) DL = I->getDebugLoc();
MachineFunction &MF = *MBB.getParent();
MachineFrameInfo &MFI = *MF.getFrameInfo();
MachineMemOperand *MMO =
MF.getMachineMemOperand(
MachinePointerInfo(PseudoSourceValue::getFixedStack(FI)),
MachineMemOperand::MOLoad,
MFI.getObjectSize(FI),
MFI.getObjectAlignment(FI));
AddDefaultPred(BuildMI(MBB, I, DL, get(ARM::tRestore), DestReg)
.addFrameIndex(FI).addImm(0).addMemOperand(MMO));
}
}