Donot forget to resolve dangling debug info in a case where virtual register, used...
[oota-llvm.git] / lib / Target / PIC16 / PIC16InstrInfo.h
1 //===- PIC16InstrInfo.h - PIC16 Instruction Information----------*- C++ -*-===//
2 //
3 //                     The LLVM Compiler Infrastructure
4 //
5 // This file is distributed under the niversity of Illinois Open Source 
6 // License. See LICENSE.TXT for details.
7 //
8 //===----------------------------------------------------------------------===//
9 //
10 // This file contains the PIC16 implementation of the TargetInstrInfo class.
11 //
12 //===----------------------------------------------------------------------===//
13
14 #ifndef PIC16INSTRUCTIONINFO_H
15 #define PIC16INSTRUCTIONINFO_H
16
17 #include "PIC16.h"
18 #include "PIC16RegisterInfo.h"
19 #include "llvm/Target/TargetInstrInfo.h"
20
21 namespace llvm {
22
23
24 class PIC16InstrInfo : public TargetInstrInfoImpl 
25 {
26   PIC16TargetMachine &TM;
27   const PIC16RegisterInfo RegInfo;
28 public:
29   explicit PIC16InstrInfo(PIC16TargetMachine &TM);
30
31   virtual const PIC16RegisterInfo &getRegisterInfo() const { return RegInfo; }
32
33   /// isLoadFromStackSlot - If the specified machine instruction is a direct
34   /// load from a stack slot, return the virtual or physical register number of
35   /// the destination along with the FrameIndex of the loaded stack slot.  If
36   /// not, return 0.  This predicate must return 0 if the instruction has
37   /// any side effects other than loading from the stack slot.
38   virtual unsigned isLoadFromStackSlot(const MachineInstr *MI, 
39                                        int &FrameIndex) const;
40                                                                                
41   /// isStoreToStackSlot - If the specified machine instruction is a direct
42   /// store to a stack slot, return the virtual or physical register number of
43   /// the source reg along with the FrameIndex of the loaded stack slot.  If
44   /// not, return 0.  This predicate must return 0 if the instruction has
45   /// any side effects other than storing to the stack slot.
46   virtual unsigned isStoreToStackSlot(const MachineInstr *MI, 
47                                       int &FrameIndex) const;
48
49   virtual void storeRegToStackSlot(MachineBasicBlock &MBB,
50                                    MachineBasicBlock::iterator MBBI,
51                                    unsigned SrcReg, bool isKill, int FrameIndex,
52                                    const TargetRegisterClass *RC,
53                                    const TargetRegisterInfo *TRI) const;
54                                                                                
55   virtual void loadRegFromStackSlot(MachineBasicBlock &MBB,
56                                     MachineBasicBlock::iterator MBBI,
57                                     unsigned DestReg, int FrameIndex,
58                                     const TargetRegisterClass *RC,
59                                     const TargetRegisterInfo *TRI) const;
60   virtual void copyPhysReg(MachineBasicBlock &MBB,
61                            MachineBasicBlock::iterator I, DebugLoc DL,
62                            unsigned DestReg, unsigned SrcReg,
63                            bool KillSrc) const;
64   virtual 
65   unsigned InsertBranch(MachineBasicBlock &MBB, MachineBasicBlock *TBB,
66                         MachineBasicBlock *FBB,
67                         const SmallVectorImpl<MachineOperand> &Cond,
68                         DebugLoc DL) const; 
69   virtual bool AnalyzeBranch(MachineBasicBlock &MBB, MachineBasicBlock *&TBB,
70                              MachineBasicBlock *&FBB,
71                              SmallVectorImpl<MachineOperand> &Cond,
72                              bool AllowModify) const;
73   };
74 } // namespace llvm
75
76 #endif