mirror of
https://github.com/c64scene-ar/llvm-6502.git
synced 2024-11-12 15:05:06 +00:00
71746220d3
instructions that decrement and increment the stack pointer before and after a call when the function does not have a reserved call frame. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@161093 91177308-0d34-0410-b5e6-96231b3b80d8
78 lines
2.4 KiB
C++
78 lines
2.4 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"
|
|
|
|
#define GET_REGINFO_HEADER
|
|
#include "MipsGenRegisterInfo.inc"
|
|
|
|
namespace llvm {
|
|
class MipsSubtarget;
|
|
class TargetInstrInfo;
|
|
class Type;
|
|
|
|
class MipsRegisterInfo : public MipsGenRegisterInfo {
|
|
protected:
|
|
const MipsSubtarget &Subtarget;
|
|
const TargetInstrInfo &TII;
|
|
|
|
public:
|
|
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 uint16_t *getCalleeSavedRegs(const MachineFunction *MF = 0) const;
|
|
const uint32_t *getCallPreservedMask(CallingConv::ID) const;
|
|
|
|
BitVector getReservedRegs(const MachineFunction &MF) const;
|
|
|
|
virtual bool requiresRegisterScavenging(const MachineFunction &MF) const;
|
|
|
|
virtual bool trackLivenessAfterRegAlloc(const MachineFunction &MF) const;
|
|
|
|
/// Stack Frame Processing Methods
|
|
void eliminateFrameIndex(MachineBasicBlock::iterator II,
|
|
int SPAdj, RegScavenger *RS = NULL) const;
|
|
|
|
void processFunctionBeforeFrameFinalized(MachineFunction &MF) const;
|
|
|
|
/// Debug information queries.
|
|
unsigned getFrameRegister(const MachineFunction &MF) const;
|
|
|
|
/// Exception handling queries.
|
|
unsigned getEHExceptionRegister() const;
|
|
unsigned getEHHandlerRegister() const;
|
|
|
|
private:
|
|
virtual void eliminateFI(MachineBasicBlock::iterator II, unsigned OpNo,
|
|
int FrameIndex, uint64_t StackSize,
|
|
int64_t SPOffset) const = 0;
|
|
};
|
|
|
|
} // end namespace llvm
|
|
|
|
#endif
|