1//=- RISCVMachineFunctionInfo.h - RISCV machine function info -----*- C++ -*-=//
2//
3// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4// See https://llvm.org/LICENSE.txt for license information.
5// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6//
7//===----------------------------------------------------------------------===//
8//
9// This file declares RISCV-specific per-machine-function information.
10//
11//===----------------------------------------------------------------------===//
12
13#ifndef LLVM_LIB_TARGET_RISCV_RISCVMACHINEFUNCTIONINFO_H
14#define LLVM_LIB_TARGET_RISCV_RISCVMACHINEFUNCTIONINFO_H
15
16#include "llvm/CodeGen/MachineFrameInfo.h"
17#include "llvm/CodeGen/MachineFunction.h"
18
19namespace llvm {
20
21/// RISCVMachineFunctionInfo - This class is derived from MachineFunctionInfo
22/// and contains private RISCV-specific information for each MachineFunction.
23class RISCVMachineFunctionInfo : public MachineFunctionInfo {
24private:
25  MachineFunction &MF;
26  /// FrameIndex for start of varargs area
27  int VarArgsFrameIndex = 0;
28  /// Size of the save area used for varargs
29  int VarArgsSaveSize = 0;
30  /// FrameIndex used for transferring values between 64-bit FPRs and a pair
31  /// of 32-bit GPRs via the stack.
32  int MoveF64FrameIndex = -1;
33
34public:
35  RISCVMachineFunctionInfo(MachineFunction &MF) : MF(MF) {}
36
37  int getVarArgsFrameIndex() const { return VarArgsFrameIndex; }
38  void setVarArgsFrameIndex(int Index) { VarArgsFrameIndex = Index; }
39
40  unsigned getVarArgsSaveSize() const { return VarArgsSaveSize; }
41  void setVarArgsSaveSize(int Size) { VarArgsSaveSize = Size; }
42
43  int getMoveF64FrameIndex() {
44    if (MoveF64FrameIndex == -1)
45      MoveF64FrameIndex = MF.getFrameInfo().CreateStackObject(8, 8, false);
46    return MoveF64FrameIndex;
47  }
48};
49
50} // end namespace llvm
51
52#endif // LLVM_LIB_TARGET_RISCV_RISCVMACHINEFUNCTIONINFO_H
53