1 //===- ARMRegisterInfo.cpp - ARM Register Information -----------*- C++ -*-===//
3 // The LLVM Compiler Infrastructure
5 // This file was developed by the "Instituto Nokia de Tecnologia" and
6 // is distributed under the University of Illinois Open Source
7 // License. See LICENSE.TXT for details.
9 //===----------------------------------------------------------------------===//
11 // This file contains the ARM implementation of the MRegisterInfo class.
13 //===----------------------------------------------------------------------===//
16 #include "ARMRegisterInfo.h"
17 #include "llvm/CodeGen/MachineInstrBuilder.h"
18 #include "llvm/CodeGen/MachineFunction.h"
19 #include "llvm/CodeGen/MachineFrameInfo.h"
20 #include "llvm/CodeGen/MachineLocation.h"
21 #include "llvm/Type.h"
22 #include "llvm/ADT/STLExtras.h"
26 ARMRegisterInfo::ARMRegisterInfo()
27 : ARMGenRegisterInfo(ARM::ADJCALLSTACKDOWN, ARM::ADJCALLSTACKUP) {
30 void ARMRegisterInfo::
31 storeRegToStackSlot(MachineBasicBlock &MBB, MachineBasicBlock::iterator I,
32 unsigned SrcReg, int FI,
33 const TargetRegisterClass *RC) const {
34 // On the order of operands here: think "[FI + 0] = SrcReg".
35 assert (RC == ARM::IntRegsRegisterClass);
36 BuildMI(MBB, I, ARM::str, 3).addFrameIndex(FI).addImm(0).addReg(SrcReg);
39 void ARMRegisterInfo::
40 loadRegFromStackSlot(MachineBasicBlock &MBB, MachineBasicBlock::iterator I,
41 unsigned DestReg, int FI,
42 const TargetRegisterClass *RC) const {
43 assert (RC == ARM::IntRegsRegisterClass);
44 BuildMI(MBB, I, ARM::ldr, 2, DestReg).addFrameIndex(FI).addImm(0);
47 void ARMRegisterInfo::copyRegToReg(MachineBasicBlock &MBB,
48 MachineBasicBlock::iterator I,
49 unsigned DestReg, unsigned SrcReg,
50 const TargetRegisterClass *RC) const {
51 assert (RC == ARM::IntRegsRegisterClass);
52 BuildMI(MBB, I, ARM::mov, 1, DestReg).addReg(SrcReg);
55 MachineInstr *ARMRegisterInfo::foldMemoryOperand(MachineInstr* MI,
61 const unsigned* ARMRegisterInfo::getCalleeSaveRegs() const {
62 static const unsigned CalleeSaveRegs[] = { 0 };
63 return CalleeSaveRegs;
66 const TargetRegisterClass* const *
67 ARMRegisterInfo::getCalleeSaveRegClasses() const {
68 static const TargetRegisterClass * const CalleeSaveRegClasses[] = { 0 };
69 return CalleeSaveRegClasses;
72 void ARMRegisterInfo::
73 eliminateCallFramePseudoInstr(MachineFunction &MF, MachineBasicBlock &MBB,
74 MachineBasicBlock::iterator I) const {
79 ARMRegisterInfo::eliminateFrameIndex(MachineBasicBlock::iterator II) const {
80 assert(0 && "Not Implemented");
83 void ARMRegisterInfo::
84 processFunctionBeforeFrameFinalized(MachineFunction &MF) const {}
86 void ARMRegisterInfo::emitPrologue(MachineFunction &MF) const {
89 void ARMRegisterInfo::emitEpilogue(MachineFunction &MF,
90 MachineBasicBlock &MBB) const {
93 unsigned ARMRegisterInfo::getRARegister() const {
97 unsigned ARMRegisterInfo::getFrameRegister(MachineFunction &MF) const {
101 #include "ARMGenRegisterInfo.inc"