MipsRegisterInfo.h revision 0e6a052331f674dd70e28af41f654a7874405eab 
1//===- MipsRegisterInfo.h - Mips Register Information Impl ------*- C++ -*-===//
2//
3//                     The LLVM Compiler Infrastructure
4//
5// This file is distributed under the University of Illinois Open Source
6// License. See LICENSE.TXT for details.
7//
8//===----------------------------------------------------------------------===//
9//
10// This file contains the Mips implementation of the TargetRegisterInfo class.
11//
12//===----------------------------------------------------------------------===//
13
14#ifndef MIPSREGISTERINFO_H
15#define MIPSREGISTERINFO_H
16
17#include "Mips.h"
18#include "llvm/Target/TargetRegisterInfo.h"
19
20#define GET_REGINFO_HEADER
21#include "MipsGenRegisterInfo.inc"
22
23namespace llvm {
24class MipsSubtarget;
25class TargetInstrInfo;
26class Type;
27
28struct MipsRegisterInfo : public MipsGenRegisterInfo {
29  const MipsSubtarget &Subtarget;
30  const TargetInstrInfo &TII;
31
32  MipsRegisterInfo(const MipsSubtarget &Subtarget, const TargetInstrInfo &tii);
33
34  /// getRegisterNumbering - Given the enum value for some register, e.g.
35  /// Mips::RA, return the number that it corresponds to (e.g. 31).
36  static unsigned getRegisterNumbering(unsigned RegEnum);
37
38  /// Get PIC indirect call register
39  static unsigned getPICCallReg();
40
41  /// Adjust the Mips stack frame.
42  void adjustMipsStackFrame(MachineFunction &MF) const;
43
44  /// Code Generation virtual methods...
45  const unsigned *getCalleeSavedRegs(const MachineFunction* MF = 0) const;
46
47  BitVector getReservedRegs(const MachineFunction &MF) const;
48
49  void eliminateCallFramePseudoInstr(MachineFunction &MF,
50                                     MachineBasicBlock &MBB,
51                                     MachineBasicBlock::iterator I) const;
52
53  /// Stack Frame Processing Methods
54  void eliminateFrameIndex(MachineBasicBlock::iterator II,
55                           int SPAdj, RegScavenger *RS = NULL) const;
56
57  void processFunctionBeforeFrameFinalized(MachineFunction &MF) const;
58
59  /// Debug information queries.
60  unsigned getFrameRegister(const MachineFunction &MF) const;
61
62  /// Exception handling queries.
63  unsigned getEHExceptionRegister() const;
64  unsigned getEHHandlerRegister() const;
65};
66
67} // end namespace llvm
68
69#endif
70