MipsInstrInfo.h revision 972f5896e417d8e81cf400083fab15a37b6d4277 
1//===- MipsInstrInfo.h - Mips Instruction Information -----------*- C++ -*-===//
2//
3//                     The LLVM Compiler Infrastructure
4//
5// This file was developed by Bruno Cardoso Lopes and is distributed under the
6// University of Illinois Open Source License. See LICENSE.TXT for details.
7//
8//===----------------------------------------------------------------------===//
9//
10// This file contains the Mips implementation of the TargetInstrInfo class.
11//
12//===----------------------------------------------------------------------===//
13
14#ifndef MIPSINSTRUCTIONINFO_H
15#define MIPSINSTRUCTIONINFO_H
16
17#include "Mips.h"
18#include "llvm/Target/TargetInstrInfo.h"
19#include "MipsRegisterInfo.h"
20
21namespace llvm {
22
23class MipsInstrInfo : public TargetInstrInfo
24{
25  MipsTargetMachine &TM;
26  const MipsRegisterInfo RI;
27public:
28  MipsInstrInfo(MipsTargetMachine &TM);
29
30  /// getRegisterInfo - TargetInstrInfo is a superset of MRegister info.  As
31  /// such, whenever a client has an instance of instruction info, it should
32  /// always be able to get register info as well (through this method).
33  ///
34  virtual const MRegisterInfo &getRegisterInfo() const { return RI; }
35
36  /// Return true if the instruction is a register to register move and
37  /// leave the source and dest operands in the passed parameters.
38  ///
39  virtual bool isMoveInstr(const MachineInstr &MI,
40                           unsigned &SrcReg, unsigned &DstReg) const;
41
42  /// isLoadFromStackSlot - If the specified machine instruction is a direct
43  /// load from a stack slot, return the virtual or physical register number of
44  /// the destination along with the FrameIndex of the loaded stack slot.  If
45  /// not, return 0.  This predicate must return 0 if the instruction has
46  /// any side effects other than loading from the stack slot.
47  virtual unsigned isLoadFromStackSlot(MachineInstr *MI, int &FrameIndex) const;
48
49  /// isStoreToStackSlot - If the specified machine instruction is a direct
50  /// store to a stack slot, return the virtual or physical register number of
51  /// the source reg along with the FrameIndex of the loaded stack slot.  If
52  /// not, return 0.  This predicate must return 0 if the instruction has
53  /// any side effects other than storing to the stack slot.
54  virtual unsigned isStoreToStackSlot(MachineInstr *MI, int &FrameIndex) const;
55
56  virtual unsigned InsertBranch(MachineBasicBlock &MBB, MachineBasicBlock *TBB,
57                                MachineBasicBlock *FBB,
58                                const std::vector<MachineOperand> &Cond) const;
59};
60
61}
62
63#endif
64