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(MachineInstr *MI, int &FrameIndex) const;
47 unsigned isStoreToStackSlot(MachineInstr *MI, int &FrameIndex) const;
49 virtual bool copyRegToReg(MachineBasicBlock &MBB,
50 MachineBasicBlock::iterator MI,
51 unsigned DestReg, unsigned SrcReg,
52 const TargetRegisterClass *DestRC,
53 const TargetRegisterClass *SrcRC) const;
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;
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;
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;
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;
79 //! Fold spills into load/store instructions
80 virtual MachineInstr* foldMemoryOperand(MachineFunction &MF,
82 const SmallVectorImpl<unsigned> &Ops,
83 int FrameIndex) const;
85 //! Fold any load/store to an operand
86 virtual MachineInstr* foldMemoryOperand(MachineFunction &MF,
88 const SmallVectorImpl<unsigned> &Ops,
89 MachineInstr* LoadMI) const {