SparcRegisterInfo.h revision bf2c8b3c96f5c885095a10b0fcb29438f92d73c2 
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  const unsigned *getCalleeSavedRegs() const;
55
56  const TargetRegisterClass* const* getCalleeSavedRegClasses() const;
57
58  BitVector getReservedRegs(const MachineFunction &MF) const;
59
60  bool hasFP(const MachineFunction &MF) const;
61
62  void eliminateCallFramePseudoInstr(MachineFunction &MF,
63                                     MachineBasicBlock &MBB,
64                                     MachineBasicBlock::iterator I) const;
65
66  void eliminateFrameIndex(MachineBasicBlock::iterator II,
67                           RegScavenger *RS = NULL) const;
68
69  void processFunctionBeforeFrameFinalized(MachineFunction &MF) const;
70
71  void emitPrologue(MachineFunction &MF) const;
72  void emitEpilogue(MachineFunction &MF, MachineBasicBlock &MBB) const;
73
74  // Debug information queries.
75  unsigned getRARegister() const;
76  unsigned getFrameRegister(MachineFunction &MF) const;
77
78  // Exception handling queries.
79  unsigned getEHExceptionRegister() const;
80  unsigned getEHHandlerRegister() const;
81};
82
83} // end namespace llvm
84
85#endif
86