SparcRegisterInfo.h revision 35b35c5c320a71e4611fe2101452da685f8eeda0 
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 loadRegFromStackSlot(MachineBasicBlock &MBB,
39                            MachineBasicBlock::iterator MBBI,
40                            unsigned DestReg, int FrameIndex,
41                            const TargetRegisterClass *RC) const;
42
43  void copyRegToReg(MachineBasicBlock &MBB, MachineBasicBlock::iterator MBBI,
44                    unsigned DestReg, unsigned SrcReg,
45                    const TargetRegisterClass *RC) const;
46
47  void reMaterialize(MachineBasicBlock &MBB, MachineBasicBlock::iterator MI,
48                     unsigned DestReg, const MachineInstr *Orig) const;
49
50  virtual MachineInstr* foldMemoryOperand(MachineInstr* MI,
51                                          unsigned OpNum,
52                                          int FrameIndex) const;
53
54  virtual MachineInstr* foldMemoryOperand(MachineInstr* MI,
55                                          unsigned OpNum,
56                                          MachineInstr* LoadMI) const {
57    return 0;
58  }
59
60  const unsigned *getCalleeSavedRegs(const MachineFunction *MF = 0) const;
61
62  const TargetRegisterClass* const* getCalleeSavedRegClasses(
63                                     const MachineFunction *MF = 0) const;
64
65  BitVector getReservedRegs(const MachineFunction &MF) const;
66
67  bool hasFP(const MachineFunction &MF) const;
68
69  void eliminateCallFramePseudoInstr(MachineFunction &MF,
70                                     MachineBasicBlock &MBB,
71                                     MachineBasicBlock::iterator I) const;
72
73  void eliminateFrameIndex(MachineBasicBlock::iterator II,
74                           int SPAdj, RegScavenger *RS = NULL) const;
75
76  void processFunctionBeforeFrameFinalized(MachineFunction &MF) const;
77
78  void emitPrologue(MachineFunction &MF) const;
79  void emitEpilogue(MachineFunction &MF, MachineBasicBlock &MBB) const;
80
81  // Debug information queries.
82  unsigned getRARegister() const;
83  unsigned getFrameRegister(MachineFunction &MF) const;
84
85  // Exception handling queries.
86  unsigned getEHExceptionRegister() const;
87  unsigned getEHHandlerRegister() const;
88};
89
90} // end namespace llvm
91
92#endif
93