| //===- SPUInstrInfo.h - Cell SPU Instruction Information --------*- C++ -*-===// |
| // |
| // The LLVM Compiler Infrastructure |
| // |
| // This file is distributed under the University of Illinois Open Source |
| // License. See LICENSE.TXT for details. |
| // |
| //===----------------------------------------------------------------------===// |
| // |
| // This file contains the CellSPU implementation of the TargetInstrInfo class. |
| // |
| //===----------------------------------------------------------------------===// |
| |
| #ifndef SPU_INSTRUCTIONINFO_H |
| #define SPU_INSTRUCTIONINFO_H |
| |
| #include "SPU.h" |
| #include "llvm/Target/TargetInstrInfo.h" |
| #include "SPURegisterInfo.h" |
| |
| namespace llvm { |
| //! Cell SPU instruction information class |
| class SPUInstrInfo : public TargetInstrInfoImpl { |
| SPUTargetMachine &TM; |
| const SPURegisterInfo RI; |
| protected: |
| virtual MachineInstr* foldMemoryOperandImpl(MachineFunction &MF, |
| MachineInstr* MI, |
| const SmallVectorImpl<unsigned> &Ops, |
| int FrameIndex) const; |
| |
| virtual MachineInstr* foldMemoryOperandImpl(MachineFunction &MF, |
| MachineInstr* MI, |
| const SmallVectorImpl<unsigned> &Ops, |
| MachineInstr* LoadMI) const { |
| return 0; |
| } |
| |
| public: |
| explicit SPUInstrInfo(SPUTargetMachine &tm); |
| |
| /// getRegisterInfo - TargetInstrInfo is a superset of MRegister info. As |
| /// such, whenever a client has an instance of instruction info, it should |
| /// always be able to get register info as well (through this method). |
| /// |
| virtual const SPURegisterInfo &getRegisterInfo() const { return RI; } |
| |
| /// Return true if the instruction is a register to register move and return |
| /// the source and dest operands and their sub-register indices by reference. |
| virtual bool isMoveInstr(const MachineInstr &MI, |
| unsigned &SrcReg, unsigned &DstReg, |
| unsigned &SrcSubIdx, unsigned &DstSubIdx) const; |
| |
| unsigned isLoadFromStackSlot(const MachineInstr *MI, |
| int &FrameIndex) const; |
| unsigned isStoreToStackSlot(const MachineInstr *MI, |
| int &FrameIndex) const; |
| |
| virtual bool copyRegToReg(MachineBasicBlock &MBB, |
| MachineBasicBlock::iterator MI, |
| unsigned DestReg, unsigned SrcReg, |
| const TargetRegisterClass *DestRC, |
| const TargetRegisterClass *SrcRC) const; |
| |
| //! Store a register to a stack slot, based on its register class. |
| virtual void storeRegToStackSlot(MachineBasicBlock &MBB, |
| MachineBasicBlock::iterator MBBI, |
| unsigned SrcReg, bool isKill, int FrameIndex, |
| const TargetRegisterClass *RC) const; |
| |
| //! Load a register from a stack slot, based on its register class. |
| virtual void loadRegFromStackSlot(MachineBasicBlock &MBB, |
| MachineBasicBlock::iterator MBBI, |
| unsigned DestReg, int FrameIndex, |
| const TargetRegisterClass *RC) const; |
| |
| //! Return true if the specified load or store can be folded |
| virtual |
| bool canFoldMemoryOperand(const MachineInstr *MI, |
| const SmallVectorImpl<unsigned> &Ops) const; |
| |
| //! Return true if the specified block does not fall through |
| virtual bool BlockHasNoFallThrough(const MachineBasicBlock &MBB) const; |
| |
| //! Reverses a branch's condition, returning false on success. |
| virtual |
| bool ReverseBranchCondition(SmallVectorImpl<MachineOperand> &Cond) const; |
| |
| virtual bool AnalyzeBranch(MachineBasicBlock &MBB, MachineBasicBlock *&TBB, |
| MachineBasicBlock *&FBB, |
| SmallVectorImpl<MachineOperand> &Cond, |
| bool AllowModify) const; |
| |
| virtual unsigned RemoveBranch(MachineBasicBlock &MBB) const; |
| |
| virtual unsigned InsertBranch(MachineBasicBlock &MBB, MachineBasicBlock *TBB, |
| MachineBasicBlock *FBB, |
| const SmallVectorImpl<MachineOperand> &Cond) const; |
| }; |
| } |
| |
| #endif |
