SparcInstrInfo.h revision d74ea2bbd8bb630331f35ead42d385249bd42af8 
1//===- SparcInstrInfo.h - Sparc Instruction Information ---------*- 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 TargetInstrInfo class.
11//
12//===----------------------------------------------------------------------===//
13
14#ifndef SPARCINSTRUCTIONINFO_H
15#define SPARCINSTRUCTIONINFO_H
16
17#include "llvm/Target/TargetInstrInfo.h"
18#include "SparcRegisterInfo.h"
19
20namespace llvm {
21
22/// SPII - This namespace holds all of the target specific flags that
23/// instruction info tracks.
24///
25namespace SPII {
26  enum {
27    Pseudo = (1<<0),
28    Load = (1<<1),
29    Store = (1<<2),
30    DelaySlot = (1<<3)
31  };
32}
33
34class SparcInstrInfo : public TargetInstrInfo {
35  const SparcRegisterInfo RI;
36public:
37  SparcInstrInfo(SparcSubtarget &ST);
38
39  /// getRegisterInfo - TargetInstrInfo is a superset of MRegister info.  As
40  /// such, whenever a client has an instance of instruction info, it should
41  /// always be able to get register info as well (through this method).
42  ///
43  virtual const MRegisterInfo &getRegisterInfo() const { return RI; }
44
45  /// Return true if the instruction is a register to register move and
46  /// leave the source and dest operands in the passed parameters.
47  ///
48  virtual bool isMoveInstr(const MachineInstr &MI,
49                           unsigned &SrcReg, unsigned &DstReg) const;
50
51  /// isLoadFromStackSlot - If the specified machine instruction is a direct
52  /// load from a stack slot, return the virtual or physical register number of
53  /// the destination along with the FrameIndex of the loaded stack slot.  If
54  /// not, return 0.  This predicate must return 0 if the instruction has
55  /// any side effects other than loading from the stack slot.
56  virtual unsigned isLoadFromStackSlot(MachineInstr *MI, int &FrameIndex) const;
57
58  /// isStoreToStackSlot - If the specified machine instruction is a direct
59  /// store to a stack slot, return the virtual or physical register number of
60  /// the source reg along with the FrameIndex of the loaded stack slot.  If
61  /// not, return 0.  This predicate must return 0 if the instruction has
62  /// any side effects other than storing to the stack slot.
63  virtual unsigned isStoreToStackSlot(MachineInstr *MI, int &FrameIndex) const;
64};
65
66}
67
68#endif
69