LLVM API Documentation

AlphaInstrInfo.h

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00001 //===- AlphaInstrInfo.h - Alpha Instruction Information ---------*- C++ -*-===//
00002 //
00003 //                     The LLVM Compiler Infrastructure
00004 //
00005 // This file was developed by the LLVM research group and is distributed under
00006 // the University of Illinois Open Source License. See LICENSE.TXT for details.
00007 //
00008 //===----------------------------------------------------------------------===//
00009 //
00010 // This file contains the Alpha implementation of the TargetInstrInfo class.
00011 //
00012 //===----------------------------------------------------------------------===//
00013 
00014 #ifndef ALPHAINSTRUCTIONINFO_H
00015 #define ALPHAINSTRUCTIONINFO_H
00016 
00017 #include "llvm/Target/TargetInstrInfo.h"
00018 #include "AlphaRegisterInfo.h"
00019 
00020 namespace llvm {
00021 
00022 class AlphaInstrInfo : public TargetInstrInfo {
00023   const AlphaRegisterInfo RI;
00024 public:
00025   AlphaInstrInfo();
00026 
00027   /// getRegisterInfo - TargetInstrInfo is a superset of MRegister info.  As
00028   /// such, whenever a client has an instance of instruction info, it should
00029   /// always be able to get register info as well (through this method).
00030   ///
00031   virtual const MRegisterInfo &getRegisterInfo() const { return RI; }
00032 
00033   /// Return true if the instruction is a register to register move and
00034   /// leave the source and dest operands in the passed parameters.
00035   ///
00036   virtual bool isMoveInstr(const MachineInstr &MI,
00037                            unsigned &SrcReg, unsigned &DstReg) const;
00038   
00039   virtual unsigned isLoadFromStackSlot(MachineInstr *MI, int &FrameIndex) const;
00040   virtual unsigned isStoreToStackSlot(MachineInstr *MI, int &FrameIndex) const;
00041 };
00042 
00043 }
00044 
00045 #endif