lib/Target/RISCV/RISCVMachineFunctionInfo.h

   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
  19 namespace llvm {
  20
  21 /// RISCVMachineFunctionInfo - This class is derived from MachineFunctionInfo
  22 /// and contains private RISCV-specific information for each MachineFunction.
  23 class RISCVMachineFunctionInfo : public MachineFunctionInfo {
  24 private:
  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
  34 public:
  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