Change target-specific classes to use more precise static types.
[oota-llvm.git] / lib / Target / CellSPU / SPUInstrInfo.h
1 //===- SPUInstrInfo.h - Cell SPU Instruction Information --------*- C++ -*-===//
2 //
3 //                     The LLVM Compiler Infrastructure
4 //
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
7 //
8 //===----------------------------------------------------------------------===//
9 //
10 // This file contains the CellSPU implementation of the TargetInstrInfo class.
11 //
12 //===----------------------------------------------------------------------===//
13
14 #ifndef SPU_INSTRUCTIONINFO_H
15 #define SPU_INSTRUCTIONINFO_H
16
17 #include "SPU.h"
18 #include "llvm/Target/TargetInstrInfo.h"
19 #include "SPURegisterInfo.h"
20
21 namespace llvm {
22   //! Cell SPU instruction information class
23   class SPUInstrInfo : public TargetInstrInfoImpl {
24     SPUTargetMachine &TM;
25     const SPURegisterInfo RI;
26   public:
27     explicit SPUInstrInfo(SPUTargetMachine &tm);
28
29     /// getRegisterInfo - TargetInstrInfo is a superset of MRegister info.  As
30     /// such, whenever a client has an instance of instruction info, it should
31     /// always be able to get register info as well (through this method).
32     ///
33     virtual const SPURegisterInfo &getRegisterInfo() const { return RI; }
34
35     /// getPointerRegClass - Return the register class to use to hold pointers.
36     /// This is used for addressing modes.
37     virtual const TargetRegisterClass *getPointerRegClass() const;  
38
39     // Return true if the instruction is a register to register move and
40     // leave the source and dest operands in the passed parameters.
41     //
42     virtual bool isMoveInstr(const MachineInstr& MI,
43                              unsigned& sourceReg,
44                              unsigned& destReg) const;
45
46     unsigned isLoadFromStackSlot(MachineInstr *MI, int &FrameIndex) const;
47     unsigned isStoreToStackSlot(MachineInstr *MI, int &FrameIndex) const;
48     
49     virtual void copyRegToReg(MachineBasicBlock &MBB,
50                               MachineBasicBlock::iterator MI,
51                               unsigned DestReg, unsigned SrcReg,
52                               const TargetRegisterClass *DestRC,
53                               const TargetRegisterClass *SrcRC) const;
54     
55     //! Store a register to a stack slot, based on its register class.
56     virtual void storeRegToStackSlot(MachineBasicBlock &MBB,
57                                      MachineBasicBlock::iterator MBBI,
58                                      unsigned SrcReg, bool isKill, int FrameIndex,
59                                      const TargetRegisterClass *RC) const;
60
61     //! Store a register to an address, based on its register class
62     virtual void storeRegToAddr(MachineFunction &MF, unsigned SrcReg, bool isKill,
63                                                   SmallVectorImpl<MachineOperand> &Addr,
64                                                   const TargetRegisterClass *RC,
65                                                   SmallVectorImpl<MachineInstr*> &NewMIs) const;
66
67     //! Load a register from a stack slot, based on its register class.
68     virtual void loadRegFromStackSlot(MachineBasicBlock &MBB,
69                                       MachineBasicBlock::iterator MBBI,
70                                       unsigned DestReg, int FrameIndex,
71                                       const TargetRegisterClass *RC) const;
72
73     //! Loqad a register from an address, based on its register class
74     virtual void loadRegFromAddr(MachineFunction &MF, unsigned DestReg,
75                                                          SmallVectorImpl<MachineOperand> &Addr,
76                                                          const TargetRegisterClass *RC,
77                                  SmallVectorImpl<MachineInstr*> &NewMIs) const;
78     
79     //! Fold spills into load/store instructions
80     virtual MachineInstr* foldMemoryOperand(MachineFunction &MF,
81                                             MachineInstr* MI,
82                                             SmallVectorImpl<unsigned> &Ops,
83                                             int FrameIndex) const;
84
85     //! Fold any load/store to an operand
86     virtual MachineInstr* foldMemoryOperand(MachineFunction &MF,
87                                             MachineInstr* MI,
88                                             SmallVectorImpl<unsigned> &Ops,
89                                             MachineInstr* LoadMI) const {
90       return 0;
91     }
92   };
93 }
94
95 #endif