lib/Target/MSP430/MSP430InstrInfo.h

   1 //===- MSP430InstrInfo.h - MSP430 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 MSP430 implementation of the TargetInstrInfo class.
  11 //
  12 //===----------------------------------------------------------------------===//
  13
  14 #ifndef LLVM_TARGET_MSP430INSTRINFO_H
  15 #define LLVM_TARGET_MSP430INSTRINFO_H
  16
  17 #include "llvm/Target/TargetInstrInfo.h"
  18 #include "MSP430RegisterInfo.h"
  19
  20 namespace llvm {
  21
  22 class MSP430TargetMachine;
  23
  24 namespace MSP430 {
  25   // MSP430 specific condition code.
  26   enum CondCode {
  27     COND_E  = 0,  // aka COND_Z
  28     COND_NE = 1,  // aka COND_NZ
  29     COND_HS = 2,  // aka COND_C
  30     COND_LO = 3,  // aka COND_NC
  31     COND_GE = 4,
  32     COND_L  = 5,
  33
  34     COND_INVALID
  35   };
  36 }
  37
  38 class MSP430InstrInfo : public TargetInstrInfoImpl {
  39   const MSP430RegisterInfo RI;
  40   MSP430TargetMachine &TM;
  41 public:
  42   explicit MSP430InstrInfo(MSP430TargetMachine &TM);
  43
  44   /// getRegisterInfo - TargetInstrInfo is a superset of MRegister info.  As
  45   /// such, whenever a client has an instance of instruction info, it should
  46   /// always be able to get register info as well (through this method).
  47   ///
  48   virtual const TargetRegisterInfo &getRegisterInfo() const { return RI; }
  49
  50   bool copyRegToReg(MachineBasicBlock &MBB, MachineBasicBlock::iterator I,
  51                     unsigned DestReg, unsigned SrcReg,
  52                     const TargetRegisterClass *DestRC,
  53                     const TargetRegisterClass *SrcRC) const;
  54
  55   bool isMoveInstr(const MachineInstr& MI,
  56                    unsigned &SrcReg, unsigned &DstReg,
  57                    unsigned &SrcSubIdx, unsigned &DstSubIdx) const;
  58
  59   virtual void storeRegToStackSlot(MachineBasicBlock &MBB,
  60                                    MachineBasicBlock::iterator MI,
  61                                    unsigned SrcReg, bool isKill,
  62                                    int FrameIndex,
  63                                    const TargetRegisterClass *RC) const;
  64   virtual void loadRegFromStackSlot(MachineBasicBlock &MBB,
  65                                     MachineBasicBlock::iterator MI,
  66                                     unsigned DestReg, int FrameIdx,
  67                                     const TargetRegisterClass *RC) const;
  68
  69   virtual bool spillCalleeSavedRegisters(MachineBasicBlock &MBB,
  70                                          MachineBasicBlock::iterator MI,
  71                                  const std::vector<CalleeSavedInfo> &CSI) const;
  72   virtual bool restoreCalleeSavedRegisters(MachineBasicBlock &MBB,
  73                                            MachineBasicBlock::iterator MI,
  74                                  const std::vector<CalleeSavedInfo> &CSI) const;
  75
  76 };
  77
  78 }
  79
  80 #endif