SparcInstrInfo.h revision 210299
1//===- SparcInstrInfo.h - Sparc 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 Sparc implementation of the TargetInstrInfo class. 11// 12//===----------------------------------------------------------------------===// 13 14#ifndef SPARCINSTRUCTIONINFO_H 15#define SPARCINSTRUCTIONINFO_H 16 17#include "llvm/Target/TargetInstrInfo.h" 18#include "SparcRegisterInfo.h" 19 20namespace llvm { 21 22/// SPII - This namespace holds all of the target specific flags that 23/// instruction info tracks. 24/// 25namespace SPII { 26 enum { 27 Pseudo = (1<<0), 28 Load = (1<<1), 29 Store = (1<<2), 30 DelaySlot = (1<<3) 31 }; 32} 33 34class SparcInstrInfo : public TargetInstrInfoImpl { 35 const SparcRegisterInfo RI; 36 const SparcSubtarget& Subtarget; 37public: 38 explicit SparcInstrInfo(SparcSubtarget &ST); 39 40 /// getRegisterInfo - TargetInstrInfo is a superset of MRegister info. As 41 /// such, whenever a client has an instance of instruction info, it should 42 /// always be able to get register info as well (through this method). 43 /// 44 virtual const SparcRegisterInfo &getRegisterInfo() const { return RI; } 45 46 /// Return true if the instruction is a register to register move and return 47 /// the source and dest operands and their sub-register indices by reference. 48 virtual bool isMoveInstr(const MachineInstr &MI, 49 unsigned &SrcReg, unsigned &DstReg, 50 unsigned &SrcSubIdx, unsigned &DstSubIdx) const; 51 52 /// isLoadFromStackSlot - If the specified machine instruction is a direct 53 /// load from a stack slot, return the virtual or physical register number of 54 /// the destination along with the FrameIndex of the loaded stack slot. If 55 /// not, return 0. This predicate must return 0 if the instruction has 56 /// any side effects other than loading from the stack slot. 57 virtual unsigned isLoadFromStackSlot(const MachineInstr *MI, 58 int &FrameIndex) const; 59 60 /// isStoreToStackSlot - If the specified machine instruction is a direct 61 /// store to a stack slot, return the virtual or physical register number of 62 /// the source reg along with the FrameIndex of the loaded stack slot. If 63 /// not, return 0. This predicate must return 0 if the instruction has 64 /// any side effects other than storing to the stack slot. 65 virtual unsigned isStoreToStackSlot(const MachineInstr *MI, 66 int &FrameIndex) const; 67 68 69 virtual unsigned InsertBranch(MachineBasicBlock &MBB, MachineBasicBlock *TBB, 70 MachineBasicBlock *FBB, 71 const SmallVectorImpl<MachineOperand> &Cond, 72 DebugLoc DL) const; 73 74 virtual void copyPhysReg(MachineBasicBlock &MBB, 75 MachineBasicBlock::iterator I, DebugLoc DL, 76 unsigned DestReg, unsigned SrcReg, 77 bool KillSrc) const; 78 79 virtual void storeRegToStackSlot(MachineBasicBlock &MBB, 80 MachineBasicBlock::iterator MBBI, 81 unsigned SrcReg, bool isKill, int FrameIndex, 82 const TargetRegisterClass *RC, 83 const TargetRegisterInfo *TRI) const; 84 85 virtual void loadRegFromStackSlot(MachineBasicBlock &MBB, 86 MachineBasicBlock::iterator MBBI, 87 unsigned DestReg, int FrameIndex, 88 const TargetRegisterClass *RC, 89 const TargetRegisterInfo *TRI) const; 90 91 unsigned getGlobalBaseReg(MachineFunction *MF) const; 92}; 93 94} 95 96#endif 97