SparcRegisterInfo.h revision f0a0cddbcda344a90b7217b744c78dccec71851c 
1//===- SparcRegisterInfo.h - Sparc Register Information Impl ----*- C++ -*-===//
2//
3//                     The LLVM Compiler Infrastructure
4//
5// This file was developed by the LLVM research group and is distributed under
6// the University of Illinois Open Source License. See LICENSE.TXT for details.
7//
8//===----------------------------------------------------------------------===//
9//
10// This file contains the Sparc implementation of the MRegisterInfo class.
11//
12//===----------------------------------------------------------------------===//
13
14#ifndef SPARCREGISTERINFO_H
15#define SPARCREGISTERINFO_H
16
17#include "llvm/Target/MRegisterInfo.h"
18#include "SparcGenRegisterInfo.h.inc"
19
20namespace llvm {
21
22class SparcSubtarget;
23class TargetInstrInfo;
24class Type;
25
26struct SparcRegisterInfo : public SparcGenRegisterInfo {
27  SparcSubtarget &Subtarget;
28  const TargetInstrInfo &TII;
29
30  SparcRegisterInfo(SparcSubtarget &st, const TargetInstrInfo &tii);
31
32  /// Code Generation virtual methods...
33  void storeRegToStackSlot(MachineBasicBlock &MBB,
34                           MachineBasicBlock::iterator MBBI,
35                           unsigned SrcReg, int FrameIndex,
36                           const TargetRegisterClass *RC) const;
37
38  void storeRegToAddr(MachineFunction &MF, unsigned SrcReg,
39                      SmallVectorImpl<MachineOperand> &Addr,
40                      const TargetRegisterClass *RC,
41                      SmallVectorImpl<MachineInstr*> &NewMIs) const;
42
43  void loadRegFromStackSlot(MachineBasicBlock &MBB,
44                            MachineBasicBlock::iterator MBBI,
45                            unsigned DestReg, int FrameIndex,
46                            const TargetRegisterClass *RC) const;
47
48  void loadRegFromAddr(MachineFunction &MF, unsigned DestReg,
49                       SmallVectorImpl<MachineOperand> &Addr,
50                       const TargetRegisterClass *RC,
51                       SmallVectorImpl<MachineInstr*> &NewMIs) const;
52
53  void copyRegToReg(MachineBasicBlock &MBB, MachineBasicBlock::iterator MBBI,
54                    unsigned DestReg, unsigned SrcReg,
55                    const TargetRegisterClass *DestRC,
56                    const TargetRegisterClass *SrcRC) const;
57
58  void reMaterialize(MachineBasicBlock &MBB, MachineBasicBlock::iterator MI,
59                     unsigned DestReg, const MachineInstr *Orig) const;
60
61  virtual MachineInstr* foldMemoryOperand(MachineInstr* MI,
62                                          unsigned OpNum,
63                                          int FrameIndex) const;
64
65  virtual MachineInstr* foldMemoryOperand(MachineInstr* MI,
66                                          unsigned OpNum,
67                                          MachineInstr* LoadMI) const {
68    return 0;
69  }
70
71  const unsigned *getCalleeSavedRegs(const MachineFunction *MF = 0) const;
72
73  const TargetRegisterClass* const* getCalleeSavedRegClasses(
74                                     const MachineFunction *MF = 0) const;
75
76  BitVector getReservedRegs(const MachineFunction &MF) const;
77
78  bool hasFP(const MachineFunction &MF) const;
79
80  void eliminateCallFramePseudoInstr(MachineFunction &MF,
81                                     MachineBasicBlock &MBB,
82                                     MachineBasicBlock::iterator I) const;
83
84  void eliminateFrameIndex(MachineBasicBlock::iterator II,
85                           int SPAdj, RegScavenger *RS = NULL) const;
86
87  void processFunctionBeforeFrameFinalized(MachineFunction &MF) const;
88
89  void emitPrologue(MachineFunction &MF) const;
90  void emitEpilogue(MachineFunction &MF, MachineBasicBlock &MBB) const;
91
92  // Debug information queries.
93  unsigned getRARegister() const;
94  unsigned getFrameRegister(MachineFunction &MF) const;
95
96  // Exception handling queries.
97  unsigned getEHExceptionRegister() const;
98  unsigned getEHHandlerRegister() const;
99};
100
101} // end namespace llvm
102
103#endif
104