//=== W65816MachineFunctionInfo.h - W65816 machine function info -*- C++ -*-==//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
//
// This file declares W65816-specific per-machine-function information.
//
//===----------------------------------------------------------------------===//

#ifndef LLVM_LIB_TARGET_W65816_W65816MACHINEFUNCTIONINFO_H
#define LLVM_LIB_TARGET_W65816_W65816MACHINEFUNCTIONINFO_H

#include "llvm/CodeGen/MachineFunction.h"

namespace llvm {

/// W65816MachineFunctionInfo - per-MachineFunction private target-specific
/// information for the W65816.
class W65816MachineFunctionInfo : public MachineFunctionInfo {
  virtual void anchor();

  /// Size of the callee-saved register portion of the stack frame in bytes.
  unsigned CalleeSavedFrameSize = 0;

  /// FrameIndex for the return-address slot.
  int ReturnAddrIndex = 0;

  /// FrameIndex for the start of the varargs area.
  int VarArgsFrameIndex = 0;

  /// Virtual register holding the struct-return pointer for sret returns.
  Register SRetReturnReg;

  /// True iff the function's prologue chose 8-bit M (SEP #$20).  Pure-i8
  /// functions run with M=1; everything else runs with M=0.  AsmPrinter
  /// reads this when expanding pseudos whose width depends on M (e.g.
  /// STA8abs needs an SEP/REP wrap in M=0 to avoid a 2-byte store).
  bool UsesAcc8 = false;


public:
  W65816MachineFunctionInfo() = default;

  W65816MachineFunctionInfo(const Function &F, const TargetSubtargetInfo *STI) {
  }

  MachineFunctionInfo *
  clone(BumpPtrAllocator &Allocator, MachineFunction &DestMF,
        const DenseMap<MachineBasicBlock *, MachineBasicBlock *> &Src2DstMBB)
      const override;

  unsigned getCalleeSavedFrameSize() const { return CalleeSavedFrameSize; }
  void setCalleeSavedFrameSize(unsigned Bytes) { CalleeSavedFrameSize = Bytes; }

  Register getSRetReturnReg() const { return SRetReturnReg; }
  void setSRetReturnReg(Register Reg) { SRetReturnReg = Reg; }

  int getRAIndex() const { return ReturnAddrIndex; }
  void setRAIndex(int Index) { ReturnAddrIndex = Index; }

  int getVarArgsFrameIndex() const { return VarArgsFrameIndex; }
  void setVarArgsFrameIndex(int Index) { VarArgsFrameIndex = Index; }

  bool getUsesAcc8() const { return UsesAcc8; }
  void setUsesAcc8(bool V) { UsesAcc8 = V; }
};

} // namespace llvm

#endif