llvm-6502/lib/Target/ARM/Thumb1RegisterInfo.h
2009-11-07 22:00:39 +00:00

71 lines
2.6 KiB
C++

//===- Thumb1RegisterInfo.h - Thumb-1 Register Information Impl -*- 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 TargetRegisterInfo
// class.
//
//===----------------------------------------------------------------------===//
#ifndef THUMB1REGISTERINFO_H
#define THUMB1REGISTERINFO_H
#include "ARM.h"
#include "ARMRegisterInfo.h"
#include "llvm/Target/TargetRegisterInfo.h"
namespace llvm {
class ARMSubtarget;
class ARMBaseInstrInfo;
class Type;
struct Thumb1RegisterInfo : public ARMBaseRegisterInfo {
public:
Thumb1RegisterInfo(const ARMBaseInstrInfo &tii, const ARMSubtarget &STI);
/// emitLoadConstPool - Emits a load from constpool to materialize the
/// specified immediate.
void emitLoadConstPool(MachineBasicBlock &MBB,
MachineBasicBlock::iterator &MBBI,
DebugLoc dl,
unsigned DestReg, unsigned SubIdx, int Val,
ARMCC::CondCodes Pred = ARMCC::AL,
unsigned PredReg = 0) const;
/// Code Generation virtual methods...
const TargetRegisterClass *
getPhysicalRegisterRegClass(unsigned Reg, EVT VT = MVT::Other) const;
bool hasReservedCallFrame(MachineFunction &MF) const;
void eliminateCallFramePseudoInstr(MachineFunction &MF,
MachineBasicBlock &MBB,
MachineBasicBlock::iterator I) const;
// rewrite MI to access 'Offset' bytes from the FP. Return the offset that
// could not be handled directly in MI.
int rewriteFrameIndex(MachineInstr &MI, unsigned FrameRegIdx,
unsigned FrameReg, int Offset,
unsigned MOVOpc, unsigned ADDriOpc, unsigned SUBriOpc) const;
bool saveScavengerRegister(MachineBasicBlock &MBB,
MachineBasicBlock::iterator I,
MachineBasicBlock::iterator &UseMI,
const TargetRegisterClass *RC,
unsigned Reg) const;
unsigned eliminateFrameIndex(MachineBasicBlock::iterator II,
int SPAdj, int *Value = NULL,
RegScavenger *RS = NULL) const;
void emitPrologue(MachineFunction &MF) const;
void emitEpilogue(MachineFunction &MF, MachineBasicBlock &MBB) const;
};
}
#endif // THUMB1REGISTERINFO_H