XCoreInstrInfo.h revision 208599
1//===- XCoreInstrInfo.h - XCore 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 XCore implementation of the TargetInstrInfo class. 11// 12//===----------------------------------------------------------------------===// 13 14#ifndef XCOREINSTRUCTIONINFO_H 15#define XCOREINSTRUCTIONINFO_H 16 17#include "llvm/Target/TargetInstrInfo.h" 18#include "XCoreRegisterInfo.h" 19 20namespace llvm { 21 22class XCoreInstrInfo : public TargetInstrInfoImpl { 23 const XCoreRegisterInfo RI; 24public: 25 XCoreInstrInfo(); 26 27 /// getRegisterInfo - TargetInstrInfo is a superset of MRegister info. As 28 /// such, whenever a client has an instance of instruction info, it should 29 /// always be able to get register info as well (through this method). 30 /// 31 virtual const TargetRegisterInfo &getRegisterInfo() const { return RI; } 32 33 /// Return true if the instruction is a register to register move and return 34 /// the source and dest operands and their sub-register indices by reference. 35 virtual bool isMoveInstr(const MachineInstr &MI, 36 unsigned &SrcReg, unsigned &DstReg, 37 unsigned &SrcSubIdx, unsigned &DstSubIdx) const; 38 39 /// isLoadFromStackSlot - If the specified machine instruction is a direct 40 /// load from a stack slot, return the virtual or physical register number of 41 /// the destination along with the FrameIndex of the loaded stack slot. If 42 /// not, return 0. This predicate must return 0 if the instruction has 43 /// any side effects other than loading from the stack slot. 44 virtual unsigned isLoadFromStackSlot(const MachineInstr *MI, 45 int &FrameIndex) const; 46 47 /// isStoreToStackSlot - If the specified machine instruction is a direct 48 /// store to a stack slot, return the virtual or physical register number of 49 /// the source reg along with the FrameIndex of the loaded stack slot. If 50 /// not, return 0. This predicate must return 0 if the instruction has 51 /// any side effects other than storing to the stack slot. 52 virtual unsigned isStoreToStackSlot(const MachineInstr *MI, 53 int &FrameIndex) const; 54 55 virtual bool AnalyzeBranch(MachineBasicBlock &MBB, MachineBasicBlock *&TBB, 56 MachineBasicBlock *&FBB, 57 SmallVectorImpl<MachineOperand> &Cond, 58 bool AllowModify) const; 59 60 virtual unsigned InsertBranch(MachineBasicBlock &MBB, MachineBasicBlock *TBB, 61 MachineBasicBlock *FBB, 62 const SmallVectorImpl<MachineOperand> &Cond) const; 63 64 virtual unsigned RemoveBranch(MachineBasicBlock &MBB) const; 65 66 virtual bool copyRegToReg(MachineBasicBlock &MBB, 67 MachineBasicBlock::iterator I, 68 unsigned DestReg, unsigned SrcReg, 69 const TargetRegisterClass *DestRC, 70 const TargetRegisterClass *SrcRC, 71 DebugLoc DL) const; 72 73 virtual void storeRegToStackSlot(MachineBasicBlock &MBB, 74 MachineBasicBlock::iterator MI, 75 unsigned SrcReg, bool isKill, int FrameIndex, 76 const TargetRegisterClass *RC, 77 const TargetRegisterInfo *TRI) const; 78 79 virtual void loadRegFromStackSlot(MachineBasicBlock &MBB, 80 MachineBasicBlock::iterator MI, 81 unsigned DestReg, int FrameIndex, 82 const TargetRegisterClass *RC, 83 const TargetRegisterInfo *TRI) const; 84 85 virtual bool spillCalleeSavedRegisters(MachineBasicBlock &MBB, 86 MachineBasicBlock::iterator MI, 87 const std::vector<CalleeSavedInfo> &CSI, 88 const TargetRegisterInfo *TRI) const; 89 90 virtual bool restoreCalleeSavedRegisters(MachineBasicBlock &MBB, 91 MachineBasicBlock::iterator MI, 92 const std::vector<CalleeSavedInfo> &CSI, 93 const TargetRegisterInfo *TRI) const; 94 95 virtual bool ReverseBranchCondition( 96 SmallVectorImpl<MachineOperand> &Cond) const; 97}; 98 99} 100 101#endif 102