xref: /freebsd-10.2-release/contrib/llvm/lib/Target/R600/SIRegisterInfo.h

//===-- SIRegisterInfo.h - SI Register Info Interface ----------*- C++ -*--===//
//
//                     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 SIRegisterInfo
//
//===----------------------------------------------------------------------===//


#ifndef SIREGISTERINFO_H_
#define SIREGISTERINFO_H_

#include "AMDGPURegisterInfo.h"

namespace llvm {

class AMDGPUTargetMachine;
class TargetInstrInfo;

struct SIRegisterInfo : public AMDGPURegisterInfo {
  AMDGPUTargetMachine &TM;
  const TargetInstrInfo &TII;

  SIRegisterInfo(AMDGPUTargetMachine &tm, const TargetInstrInfo &tii);

  virtual BitVector getReservedRegs(const MachineFunction &MF) const;

  virtual unsigned getRegPressureLimit(const TargetRegisterClass *RC,
                                       MachineFunction &MF) const;

  /// \param RC is an AMDIL reg class.
  ///
  /// \returns the SI register class that is equivalent to \p RC.
  virtual const TargetRegisterClass *
    getISARegClass(const TargetRegisterClass *RC) const;

  /// \brief get the register class of the specified type to use in the
  /// CFGStructurizer
  virtual const TargetRegisterClass * getCFGStructurizerRegClass(MVT VT) const;
};

} // End namespace llvm

#endif // SIREGISTERINFO_H_