| //===- XCoreInstrInfo.h - XCore 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 XCore implementation of the TargetInstrInfo class. |
| // |
| //===----------------------------------------------------------------------===// |
| |
| #ifndef XCOREINSTRUCTIONINFO_H |
| #define XCOREINSTRUCTIONINFO_H |
| |
| #include "llvm/Target/TargetInstrInfo.h" |
| #include "XCoreRegisterInfo.h" |
| |
| namespace llvm { |
| |
| class XCoreInstrInfo : public TargetInstrInfoImpl { |
| const XCoreRegisterInfo RI; |
| public: |
| XCoreInstrInfo(); |
| |
| /// 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 TargetRegisterInfo &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; |
| |
| /// isLoadFromStackSlot - If the specified machine instruction is a direct |
| /// load from a stack slot, return the virtual or physical register number of |
| /// the destination along with the FrameIndex of the loaded stack slot. If |
| /// not, return 0. This predicate must return 0 if the instruction has |
| /// any side effects other than loading from the stack slot. |
| virtual unsigned isLoadFromStackSlot(const MachineInstr *MI, |
| int &FrameIndex) const; |
| |
| /// isStoreToStackSlot - If the specified machine instruction is a direct |
| /// store to a stack slot, return the virtual or physical register number of |
| /// the source reg along with the FrameIndex of the loaded stack slot. If |
| /// not, return 0. This predicate must return 0 if the instruction has |
| /// any side effects other than storing to the stack slot. |
| virtual unsigned isStoreToStackSlot(const MachineInstr *MI, |
| int &FrameIndex) const; |
| |
| virtual bool isInvariantLoad(const MachineInstr *MI) const; |
| |
| virtual bool AnalyzeBranch(MachineBasicBlock &MBB, MachineBasicBlock *&TBB, |
| MachineBasicBlock *&FBB, |
| SmallVectorImpl<MachineOperand> &Cond, |
| bool AllowModify) const; |
| |
| virtual unsigned InsertBranch(MachineBasicBlock &MBB, MachineBasicBlock *TBB, |
| MachineBasicBlock *FBB, |
| const SmallVectorImpl<MachineOperand> &Cond) const; |
| |
| virtual unsigned RemoveBranch(MachineBasicBlock &MBB) const; |
| |
| virtual bool copyRegToReg(MachineBasicBlock &MBB, |
| MachineBasicBlock::iterator I, |
| unsigned DestReg, unsigned SrcReg, |
| const TargetRegisterClass *DestRC, |
| const TargetRegisterClass *SrcRC) const; |
| |
| virtual void storeRegToStackSlot(MachineBasicBlock &MBB, |
| MachineBasicBlock::iterator MI, |
| unsigned SrcReg, bool isKill, int FrameIndex, |
| const TargetRegisterClass *RC) const; |
| |
| virtual void loadRegFromStackSlot(MachineBasicBlock &MBB, |
| MachineBasicBlock::iterator MI, |
| unsigned DestReg, int FrameIndex, |
| const TargetRegisterClass *RC) const; |
| |
| virtual bool spillCalleeSavedRegisters(MachineBasicBlock &MBB, |
| MachineBasicBlock::iterator MI, |
| const std::vector<CalleeSavedInfo> &CSI) const; |
| |
| virtual bool restoreCalleeSavedRegisters(MachineBasicBlock &MBB, |
| MachineBasicBlock::iterator MI, |
| const std::vector<CalleeSavedInfo> &CSI) const; |
| |
| virtual bool BlockHasNoFallThrough(const MachineBasicBlock &MBB) const; |
| |
| virtual bool ReverseBranchCondition( |
| SmallVectorImpl<MachineOperand> &Cond) const; |
| }; |
| |
| } |
| |
| #endif |
