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AMDGPURegisterInfo.h @release_39

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//===-- AMDGPURegisterInfo.h - AMDGPURegisterInfo 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 TargetRegisterInfo interface that is implemented by all hw codegen
/// targets.
//
//===----------------------------------------------------------------------===//

#ifndef LLVM_LIB_TARGET_AMDGPU_AMDGPUREGISTERINFO_H
#define LLVM_LIB_TARGET_AMDGPU_AMDGPUREGISTERINFO_H

#include "llvm/Target/TargetRegisterInfo.h"

#define GET_REGINFO_HEADER
#define GET_REGINFO_ENUM
#include "AMDGPUGenRegisterInfo.inc"

namespace llvm {

class AMDGPUSubtarget;
class TargetInstrInfo;

struct AMDGPURegisterInfo : public AMDGPUGenRegisterInfo {
  AMDGPURegisterInfo();

  /// \returns the sub reg enum value for the given \p Channel
  /// (e.g. getSubRegFromChannel(0) -> AMDGPU::sub0)
  unsigned getSubRegFromChannel(unsigned Channel) const;

  const MCPhysReg* getCalleeSavedRegs(const MachineFunction *MF) const override;
  unsigned getFrameRegister(const MachineFunction &MF) const override;
};

} // End namespace llvm

#endif