ARCMachineFunctionInfo.h

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//===- ARCMachineFunctionInfo.h - ARC 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 ARC-specific per-machine-function information.
//
//===----------------------------------------------------------------------===//
 
#ifndef LLVM_LIB_TARGET_ARC_ARCMACHINEFUNCTIONINFO_H
#define LLVM_LIB_TARGET_ARC_ARCMACHINEFUNCTIONINFO_H
 
#include "llvm/CodeGen/MachineFunction.h"
 
namespace llvm {
 
/// ARCFunctionInfo - This class is derived from MachineFunction private
/// ARC target-specific information for each MachineFunction.
class ARCFunctionInfo : public MachineFunctionInfo {
  virtual void anchor();
  bool ReturnStackOffsetSet;
  int VarArgsFrameIndex;
  unsigned ReturnStackOffset;
 
public:
  explicit ARCFunctionInfo(const Function &F, const TargetSubtargetInfo *STI)
      : ReturnStackOffsetSet(false), VarArgsFrameIndex(0),
        ReturnStackOffset(-1U), MaxCallStackReq(0) {}
  ~ARCFunctionInfo() {}
 
  MachineFunctionInfo *
  clone(BumpPtrAllocator &Allocator, MachineFunction &DestMF,
        const DenseMap<MachineBasicBlock *, MachineBasicBlock *> &Src2DstMBB)
      const override;
 
  void setVarArgsFrameIndex(int off) { VarArgsFrameIndex = off; }
  int getVarArgsFrameIndex() const { return VarArgsFrameIndex; }
 
  void setReturnStackOffset(unsigned value) {
    assert(!ReturnStackOffsetSet && "Return stack offset set twice");
    ReturnStackOffset = value;
    ReturnStackOffsetSet = true;
  }
 
  unsigned getReturnStackOffset() const {
    assert(ReturnStackOffsetSet && "Return stack offset not set");
    return ReturnStackOffset;
  }
 
  unsigned MaxCallStackReq;
};
 
} // end namespace llvm
 
#endif // LLVM_LIB_TARGET_ARC_ARCMACHINEFUNCTIONINFO_H