1 //===- MSP430InstrInfo.h - MSP430 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 MSP430 implementation of the TargetInstrInfo class.
12 //===----------------------------------------------------------------------===//
14 #ifndef LLVM_TARGET_MSP430INSTRINFO_H
15 #define LLVM_TARGET_MSP430INSTRINFO_H
17 #include "llvm/Target/TargetInstrInfo.h"
18 #include "MSP430RegisterInfo.h"
22 class MSP430TargetMachine;
24 class MSP430InstrInfo : public TargetInstrInfoImpl {
25 const MSP430RegisterInfo RI;
26 MSP430TargetMachine &TM;
28 explicit MSP430InstrInfo(MSP430TargetMachine &TM);
30 /// getRegisterInfo - TargetInstrInfo is a superset of MRegister info. As
31 /// such, whenever a client has an instance of instruction info, it should
32 /// always be able to get register info as well (through this method).
34 virtual const TargetRegisterInfo &getRegisterInfo() const { return RI; }
36 bool copyRegToReg(MachineBasicBlock &MBB, MachineBasicBlock::iterator I,
37 unsigned DestReg, unsigned SrcReg,
38 const TargetRegisterClass *DestRC,
39 const TargetRegisterClass *SrcRC) const;
41 bool isMoveInstr(const MachineInstr& MI,
42 unsigned &SrcReg, unsigned &DstReg,
43 unsigned &SrcSubIdx, unsigned &DstSubIdx) const;
45 virtual void storeRegToStackSlot(MachineBasicBlock &MBB,
46 MachineBasicBlock::iterator MI,
47 unsigned SrcReg, bool isKill,
49 const TargetRegisterClass *RC) const;
50 virtual void loadRegFromStackSlot(MachineBasicBlock &MBB,
51 MachineBasicBlock::iterator MI,
52 unsigned DestReg, int FrameIdx,
53 const TargetRegisterClass *RC) const;
55 virtual bool spillCalleeSavedRegisters(MachineBasicBlock &MBB,
56 MachineBasicBlock::iterator MI,
57 const std::vector<CalleeSavedInfo> &CSI) const;
58 virtual bool restoreCalleeSavedRegisters(MachineBasicBlock &MBB,
59 MachineBasicBlock::iterator MI,
60 const std::vector<CalleeSavedInfo> &CSI) const;
62 // Branch folding goodness
63 bool ReverseBranchCondition(SmallVectorImpl<MachineOperand> &Cond) const;
64 bool BlockHasNoFallThrough(const MachineBasicBlock &MBB) const;
65 bool isUnpredicatedTerminator(const MachineInstr *MI) const;
66 bool AnalyzeBranch(MachineBasicBlock &MBB,
67 MachineBasicBlock *&TBB, MachineBasicBlock *&FBB,
68 SmallVectorImpl<MachineOperand> &Cond,
69 bool AllowModify) const;
71 unsigned RemoveBranch(MachineBasicBlock &MBB) const;
72 unsigned InsertBranch(MachineBasicBlock &MBB, MachineBasicBlock *TBB,
73 MachineBasicBlock *FBB,
74 const SmallVectorImpl<MachineOperand> &Cond) const;