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//===- ARMRegisterInfo.cpp - ARM Register Information -----------*- C++ -*-===//
//
// The LLVM Compiler Infrastructure
//
// This file was developed by the "Instituto Nokia de Tecnologia" and
// is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// This file contains the ARM implementation of the MRegisterInfo class.
//
//===----------------------------------------------------------------------===//
#include "ARM.h"
#include "ARMRegisterInfo.h"
#include "llvm/CodeGen/MachineInstrBuilder.h"
#include "llvm/CodeGen/MachineFunction.h"
#include "llvm/CodeGen/MachineFrameInfo.h"
#include "llvm/CodeGen/MachineLocation.h"
#include "llvm/Type.h"
#include "llvm/ADT/STLExtras.h"
#include <iostream>
using namespace llvm;
ARMRegisterInfo::ARMRegisterInfo()
: ARMGenRegisterInfo(ARM::ADJCALLSTACKDOWN, ARM::ADJCALLSTACKUP) {
}
void ARMRegisterInfo::
storeRegToStackSlot(MachineBasicBlock &MBB, MachineBasicBlock::iterator I,
unsigned SrcReg, int FI,
const TargetRegisterClass *RC) const {
// On the order of operands here: think "[FI + 0] = SrcReg".
assert (RC == ARM::IntRegsRegisterClass);
BuildMI(MBB, I, ARM::str, 3).addFrameIndex(FI).addImm(0).addReg(SrcReg);
}
void ARMRegisterInfo::
loadRegFromStackSlot(MachineBasicBlock &MBB, MachineBasicBlock::iterator I,
unsigned DestReg, int FI,
const TargetRegisterClass *RC) const {
assert (RC == ARM::IntRegsRegisterClass);
BuildMI(MBB, I, ARM::ldr, 2, DestReg).addFrameIndex(FI).addImm(0);
}
void ARMRegisterInfo::copyRegToReg(MachineBasicBlock &MBB,
MachineBasicBlock::iterator I,
unsigned DestReg, unsigned SrcReg,
const TargetRegisterClass *RC) const {
assert (RC == ARM::IntRegsRegisterClass);
BuildMI(MBB, I, ARM::mov, 1, DestReg).addReg(SrcReg);
}
MachineInstr *ARMRegisterInfo::foldMemoryOperand(MachineInstr* MI,
unsigned OpNum,
int FI) const {
return NULL;
}
void ARMRegisterInfo::
eliminateCallFramePseudoInstr(MachineFunction &MF, MachineBasicBlock &MBB,
MachineBasicBlock::iterator I) const {
MBB.erase(I);
}
void
ARMRegisterInfo::eliminateFrameIndex(MachineBasicBlock::iterator II) const {
assert(0 && "Not Implemented");
}
void ARMRegisterInfo::
processFunctionBeforeFrameFinalized(MachineFunction &MF) const {}
void ARMRegisterInfo::emitPrologue(MachineFunction &MF) const {
}
void ARMRegisterInfo::emitEpilogue(MachineFunction &MF,
MachineBasicBlock &MBB) const {
}
unsigned ARMRegisterInfo::getRARegister() const {
return ARM::R14;
}
unsigned ARMRegisterInfo::getFrameRegister(MachineFunction &MF) const {
return ARM::R13;
}
#include "ARMGenRegisterInfo.inc"