llvm-6502/lib/Target/Mips/MipsRegisterInfo.h
Jim Grosbach dff4b4c5a7 Change the Value argument to eliminateFrameIndex to a type-tagged value. This
is preparatory to having PEI's scavenged frame index value reuse logic
properly distinguish types of frame values (e.g., whether the value is
stack-pointer relative or frame-pointer relative).

No functionality change.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98086 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-09 21:45:49 +00:00

89 lines
2.8 KiB
C++

//===- MipsRegisterInfo.h - Mips 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 Mips implementation of the TargetRegisterInfo class.
//
//===----------------------------------------------------------------------===//
#ifndef MIPSREGISTERINFO_H
#define MIPSREGISTERINFO_H
#include "Mips.h"
#include "llvm/Target/TargetRegisterInfo.h"
#include "MipsGenRegisterInfo.h.inc"
namespace llvm {
class MipsSubtarget;
class TargetInstrInfo;
class Type;
namespace Mips {
/// SubregIndex - The index of various sized subregister classes. Note that
/// these indices must be kept in sync with the class indices in the
/// MipsRegisterInfo.td file.
enum SubregIndex {
SUBREG_FPEVEN = 1, SUBREG_FPODD = 2
};
}
struct MipsRegisterInfo : public MipsGenRegisterInfo {
const MipsSubtarget &Subtarget;
const TargetInstrInfo &TII;
MipsRegisterInfo(const MipsSubtarget &Subtarget, const TargetInstrInfo &tii);
/// getRegisterNumbering - Given the enum value for some register, e.g.
/// Mips::RA, return the number that it corresponds to (e.g. 31).
static unsigned getRegisterNumbering(unsigned RegEnum);
/// Get PIC indirect call register
static unsigned getPICCallReg();
/// Adjust the Mips stack frame.
void adjustMipsStackFrame(MachineFunction &MF) const;
/// Code Generation virtual methods...
const unsigned *getCalleeSavedRegs(const MachineFunction* MF = 0) const;
const TargetRegisterClass* const*
getCalleeSavedRegClasses(const MachineFunction* MF = 0) const;
BitVector getReservedRegs(const MachineFunction &MF) const;
bool hasFP(const MachineFunction &MF) const;
void eliminateCallFramePseudoInstr(MachineFunction &MF,
MachineBasicBlock &MBB,
MachineBasicBlock::iterator I) const;
/// Stack Frame Processing Methods
unsigned eliminateFrameIndex(MachineBasicBlock::iterator II,
int SPAdj, FrameIndexValue *Value = NULL,
RegScavenger *RS = NULL) const;
void processFunctionBeforeFrameFinalized(MachineFunction &MF) const;
void emitPrologue(MachineFunction &MF) const;
void emitEpilogue(MachineFunction &MF, MachineBasicBlock &MBB) const;
/// Debug information queries.
unsigned getRARegister() const;
unsigned getFrameRegister(const MachineFunction &MF) const;
/// Exception handling queries.
unsigned getEHExceptionRegister() const;
unsigned getEHHandlerRegister() const;
int getDwarfRegNum(unsigned RegNum, bool isEH) const;
};
} // end namespace llvm
#endif