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annotate lib/Target/MSP430/MSP430InstrInfo.h @ 0:95c75e76d11b LLVM3.4

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LLVM 3.4
author Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
date Thu, 12 Dec 2013 13:56:28 +0900
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children 54457678186b
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1 //===-- MSP430InstrInfo.h - MSP430 Instruction Information ------*- C++ -*-===//
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2 //
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3 // The LLVM Compiler Infrastructure
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4 //
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5 // This file is distributed under the University of Illinois Open Source
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6 // License. See LICENSE.TXT for details.
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7 //
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8 //===----------------------------------------------------------------------===//
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9 //
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10 // This file contains the MSP430 implementation of the TargetInstrInfo class.
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11 //
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12 //===----------------------------------------------------------------------===//
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13
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14 #ifndef LLVM_TARGET_MSP430INSTRINFO_H
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15 #define LLVM_TARGET_MSP430INSTRINFO_H
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16
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17 #include "MSP430RegisterInfo.h"
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18 #include "llvm/Target/TargetInstrInfo.h"
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19
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20 #define GET_INSTRINFO_HEADER
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21 #include "MSP430GenInstrInfo.inc"
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22
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23 namespace llvm {
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24
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25 class MSP430TargetMachine;
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26
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27 /// MSP430II - This namespace holds all of the target specific flags that
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28 /// instruction info tracks.
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29 ///
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30 namespace MSP430II {
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31 enum {
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32 SizeShift = 2,
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33 SizeMask = 7 << SizeShift,
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34
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35 SizeUnknown = 0 << SizeShift,
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36 SizeSpecial = 1 << SizeShift,
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37 Size2Bytes = 2 << SizeShift,
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38 Size4Bytes = 3 << SizeShift,
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39 Size6Bytes = 4 << SizeShift
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40 };
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41 }
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42
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43 class MSP430InstrInfo : public MSP430GenInstrInfo {
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44 const MSP430RegisterInfo RI;
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45 virtual void anchor();
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46 public:
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47 explicit MSP430InstrInfo(MSP430TargetMachine &TM);
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48
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49 /// getRegisterInfo - TargetInstrInfo is a superset of MRegister info. As
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50 /// such, whenever a client has an instance of instruction info, it should
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51 /// always be able to get register info as well (through this method).
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52 ///
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53 virtual const TargetRegisterInfo &getRegisterInfo() const { return RI; }
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54
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55 void copyPhysReg(MachineBasicBlock &MBB,
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56 MachineBasicBlock::iterator I, DebugLoc DL,
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57 unsigned DestReg, unsigned SrcReg,
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58 bool KillSrc) const;
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59
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60 virtual void storeRegToStackSlot(MachineBasicBlock &MBB,
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61 MachineBasicBlock::iterator MI,
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62 unsigned SrcReg, bool isKill,
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63 int FrameIndex,
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64 const TargetRegisterClass *RC,
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65 const TargetRegisterInfo *TRI) const;
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66 virtual void loadRegFromStackSlot(MachineBasicBlock &MBB,
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67 MachineBasicBlock::iterator MI,
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68 unsigned DestReg, int FrameIdx,
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69 const TargetRegisterClass *RC,
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70 const TargetRegisterInfo *TRI) const;
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71
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72 unsigned GetInstSizeInBytes(const MachineInstr *MI) const;
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73
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74 // Branch folding goodness
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75 bool ReverseBranchCondition(SmallVectorImpl<MachineOperand> &Cond) const;
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76 bool isUnpredicatedTerminator(const MachineInstr *MI) const;
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77 bool AnalyzeBranch(MachineBasicBlock &MBB,
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78 MachineBasicBlock *&TBB, MachineBasicBlock *&FBB,
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79 SmallVectorImpl<MachineOperand> &Cond,
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80 bool AllowModify) const;
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81
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82 unsigned RemoveBranch(MachineBasicBlock &MBB) const;
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83 unsigned InsertBranch(MachineBasicBlock &MBB, MachineBasicBlock *TBB,
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84 MachineBasicBlock *FBB,
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85 const SmallVectorImpl<MachineOperand> &Cond,
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86 DebugLoc DL) const;
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87
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88 };
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89
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90 }
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91
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92 #endif