1 //===- SPUInstrInfo.h - Cell SPU Instruction Information --------*- C++ -*-===//
3 // The LLVM Compiler Infrastructure
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
8 //===----------------------------------------------------------------------===//
10 // This file contains the CellSPU implementation of the TargetInstrInfo class.
12 //===----------------------------------------------------------------------===//
14 #ifndef SPU_INSTRUCTIONINFO_H
15 #define SPU_INSTRUCTIONINFO_H
18 #include "llvm/Target/TargetInstrInfo.h"
19 #include "SPURegisterInfo.h"
22 //! Cell SPU instruction information class
23 class SPUInstrInfo : public TargetInstrInfoImpl {
25 const SPURegisterInfo RI;
27 explicit SPUInstrInfo(SPUTargetMachine &tm);
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).
33 virtual const SPURegisterInfo &getRegisterInfo() const { return RI; }
35 /// getPointerRegClass - Return the register class to use to hold pointers.
36 /// This is used for addressing modes.
37 virtual const TargetRegisterClass *getPointerRegClass() const;
39 // Return true if the instruction is a register to register move and
40 // leave the source and dest operands in the passed parameters.
42 virtual bool isMoveInstr(const MachineInstr& MI,
44 unsigned& destReg) const;
46 unsigned isLoadFromStackSlot(const MachineInstr *MI,
47 int &FrameIndex) const;
48 unsigned isStoreToStackSlot(const MachineInstr *MI,
49 int &FrameIndex) const;
51 virtual bool copyRegToReg(MachineBasicBlock &MBB,
52 MachineBasicBlock::iterator MI,
53 unsigned DestReg, unsigned SrcReg,
54 const TargetRegisterClass *DestRC,
55 const TargetRegisterClass *SrcRC) const;
57 //! Store a register to a stack slot, based on its register class.
58 virtual void storeRegToStackSlot(MachineBasicBlock &MBB,
59 MachineBasicBlock::iterator MBBI,
60 unsigned SrcReg, bool isKill, int FrameIndex,
61 const TargetRegisterClass *RC) const;
63 //! Store a register to an address, based on its register class
64 virtual void storeRegToAddr(MachineFunction &MF, unsigned SrcReg, bool isKill,
65 SmallVectorImpl<MachineOperand> &Addr,
66 const TargetRegisterClass *RC,
67 SmallVectorImpl<MachineInstr*> &NewMIs) const;
69 //! Load a register from a stack slot, based on its register class.
70 virtual void loadRegFromStackSlot(MachineBasicBlock &MBB,
71 MachineBasicBlock::iterator MBBI,
72 unsigned DestReg, int FrameIndex,
73 const TargetRegisterClass *RC) const;
75 //! Loqad a register from an address, based on its register class
76 virtual void loadRegFromAddr(MachineFunction &MF, unsigned DestReg,
77 SmallVectorImpl<MachineOperand> &Addr,
78 const TargetRegisterClass *RC,
79 SmallVectorImpl<MachineInstr*> &NewMIs) const;
81 //! Fold spills into load/store instructions
82 virtual MachineInstr* foldMemoryOperand(MachineFunction &MF,
84 const SmallVectorImpl<unsigned> &Ops,
85 int FrameIndex) const;
87 //! Fold any load/store to an operand
88 virtual MachineInstr* foldMemoryOperand(MachineFunction &MF,
90 const SmallVectorImpl<unsigned> &Ops,
91 MachineInstr* LoadMI) const {