llvm-6502/lib/Target/PowerPC/PPCMachineFunctionInfo.h

//===-- PPCMachineFunctionInfo.h - Private data used for PowerPC --*- C++ -*-=//
//
//                     The LLVM Compiler Infrastructure
//
// This file was developed by James M. Laskey and is distributed under
// the University of Illinois Open Source License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// This file declares the PowerPC specific subclass of MachineFunctionInfo.
//
//===----------------------------------------------------------------------===//

#ifndef PPC_MACHINE_FUNCTION_INFO_H
#define PPC_MACHINE_FUNCTION_INFO_H

#include "llvm/CodeGen/MachineFunction.h"

namespace llvm {

/// PPCFunctionInfo - This class is derived from MachineFunction private
/// PowerPC target-specific information for each MachineFunction.
class PPCFunctionInfo : public MachineFunctionInfo {
private:
  /// FramePointerSaveIndex - Frame index of where the old frame pointer is
  /// stored.  Also used as an anchor for instructions that need to be altered
  /// when using frame pointers (dyna_add, dyna_sub.)
  int FramePointerSaveIndex;

public:
  PPCFunctionInfo(MachineFunction& MF) 
  : FramePointerSaveIndex(0)
  {}

  int getFramePointerSaveIndex() const { return FramePointerSaveIndex; }
  void setFramePointerSaveIndex(int Idx) { FramePointerSaveIndex = Idx; }

};

} // end of namespace llvm


#endif