LanaiMachineFunctionInfo.h

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//===- LanaiMachineFuctionInfo.h - Lanai machine func 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 Lanai-specific per-machine-function information.
//
//===----------------------------------------------------------------------===//
 
#ifndef LLVM_LIB_TARGET_LANAI_LANAIMACHINEFUNCTIONINFO_H
#define LLVM_LIB_TARGET_LANAI_LANAIMACHINEFUNCTIONINFO_H
 
#include "LanaiRegisterInfo.h"
#include "llvm/CodeGen/MachineFunction.h"
#include "llvm/CodeGen/MachineRegisterInfo.h"
 
namespace llvm {
 
// LanaiMachineFunctionInfo - This class is derived from MachineFunction and
// contains private Lanai target-specific information for each MachineFunction.
class LanaiMachineFunctionInfo : public MachineFunctionInfo {
  virtual void anchor();
 
  // SRetReturnReg - Lanai ABI require that sret lowering includes
  // returning the value of the returned struct in a register. This field
  // holds the virtual register into which the sret argument is passed.
  Register SRetReturnReg;
 
  // GlobalBaseReg - keeps track of the virtual register initialized for
  // use as the global base register. This is used for PIC in some PIC
  // relocation models.
  Register GlobalBaseReg;
 
  // VarArgsFrameIndex - FrameIndex for start of varargs area.
  int VarArgsFrameIndex;
 
public:
  explicit LanaiMachineFunctionInfo(MachineFunction &MF)
      : VarArgsFrameIndex(0) {}
  MachineFunctionInfo *
  clone(BumpPtrAllocator &Allocator, MachineFunction &DestMF,
        const DenseMap<MachineBasicBlock *, MachineBasicBlock *> &Src2DstMBB)
      const override;
 
  Register getSRetReturnReg() const { return SRetReturnReg; }
  void setSRetReturnReg(Register Reg) { SRetReturnReg = Reg; }
 
  int getVarArgsFrameIndex() const { return VarArgsFrameIndex; }
  void setVarArgsFrameIndex(int Index) { VarArgsFrameIndex = Index; }
};
 
} // namespace llvm
 
#endif // LLVM_LIB_TARGET_LANAI_LANAIMACHINEFUNCTIONINFO_H