llvm-6502/lib/Target/Blackfin/BlackfinRegisterInfo.h
Jim Grosbach fcb4a8ead3 Simplify eliminateFrameIndex() interface back down now that PEI doesn't need
to try to re-use scavenged frame index reference registers. rdar://8277890

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@112241 91177308-0d34-0410-b5e6-96231b3b80d8
2010-08-26 23:32:16 +00:00

89 lines
2.8 KiB
C++

//===- BlackfinRegisterInfo.h - Blackfin Register 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 Blackfin implementation of the TargetRegisterInfo
// class.
//
//===----------------------------------------------------------------------===//
#ifndef BLACKFINREGISTERINFO_H
#define BLACKFINREGISTERINFO_H
#include "llvm/Target/TargetRegisterInfo.h"
#include "BlackfinGenRegisterInfo.h.inc"
namespace llvm {
class BlackfinSubtarget;
class TargetInstrInfo;
class Type;
struct BlackfinRegisterInfo : public BlackfinGenRegisterInfo {
BlackfinSubtarget &Subtarget;
const TargetInstrInfo &TII;
BlackfinRegisterInfo(BlackfinSubtarget &st, const TargetInstrInfo &tii);
/// Code Generation virtual methods...
const unsigned *getCalleeSavedRegs(const MachineFunction *MF = 0) const;
BitVector getReservedRegs(const MachineFunction &MF) const;
// getSubReg implemented by tablegen
const TargetRegisterClass *getPointerRegClass(unsigned Kind = 0) const {
return &BF::PRegClass;
}
bool hasFP(const MachineFunction &MF) const;
// bool hasReservedCallFrame(MachineFunction &MF) const;
bool requiresRegisterScavenging(const MachineFunction &MF) const;
void eliminateCallFramePseudoInstr(MachineFunction &MF,
MachineBasicBlock &MBB,
MachineBasicBlock::iterator I) const;
void eliminateFrameIndex(MachineBasicBlock::iterator II,
int SPAdj, RegScavenger *RS = NULL) const;
void processFunctionBeforeCalleeSavedScan(MachineFunction &MF,
RegScavenger *RS) const;
void emitPrologue(MachineFunction &MF) const;
void emitEpilogue(MachineFunction &MF, MachineBasicBlock &MBB) const;
unsigned getFrameRegister(const MachineFunction &MF) const;
unsigned getRARegister() const;
// Exception handling queries.
unsigned getEHExceptionRegister() const;
unsigned getEHHandlerRegister() const;
int getDwarfRegNum(unsigned RegNum, bool isEH) const;
// Utility functions
void adjustRegister(MachineBasicBlock &MBB,
MachineBasicBlock::iterator I,
DebugLoc DL,
unsigned Reg,
unsigned ScratchReg,
int delta) const;
void loadConstant(MachineBasicBlock &MBB,
MachineBasicBlock::iterator I,
DebugLoc DL,
unsigned Reg,
int value) const;
};
} // end namespace llvm
#endif