llvm-6502/lib/Target/R600/SIInstrInfo.h

//===-- SIInstrInfo.h - SI Instruction Info Interface ---------------------===//
//
//                     The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
/// \file
/// \brief Interface definition for SIInstrInfo.
//
//===----------------------------------------------------------------------===//


#ifndef SIINSTRINFO_H
#define SIINSTRINFO_H

#include "AMDGPUInstrInfo.h"
#include "SIRegisterInfo.h"

namespace llvm {

class SIInstrInfo : public AMDGPUInstrInfo {
private:
  const SIRegisterInfo RI;

public:
  explicit SIInstrInfo(AMDGPUTargetMachine &tm);

  const SIRegisterInfo &getRegisterInfo() const;

  virtual void copyPhysReg(MachineBasicBlock &MBB,
                           MachineBasicBlock::iterator MI, DebugLoc DL,
                           unsigned DestReg, unsigned SrcReg,
                           bool KillSrc) const;

  /// \returns the encoding type of this instruction.
  unsigned getEncodingType(const MachineInstr &MI) const;

  /// \returns the size of this instructions encoding in number of bytes.
  unsigned getEncodingBytes(const MachineInstr &MI) const;

  virtual MachineInstr * getMovImmInstr(MachineFunction *MF, unsigned DstReg,
                                        int64_t Imm) const;

  virtual unsigned getIEQOpcode() const { assert(!"Implement"); return 0;}
  virtual bool isMov(unsigned Opcode) const;

  virtual bool isSafeToMoveRegClassDefs(const TargetRegisterClass *RC) const;
  };

} // End namespace llvm

namespace SIInstrFlags {
  enum Flags {
    // First 4 bits are the instruction encoding
    VM_CNT = 1 << 4,
    EXP_CNT = 1 << 5,
    LGKM_CNT = 1 << 6
  };
}

#endif //SIINSTRINFO_H