lib/Target/RISCV/RISCVMachineFunctionInfo.h

   1 //=- RISCVMachineFunctionInfo.h - RISCV machine function info -----*- C++ -*-=//
   2 //
   3 //                     The LLVM Compiler Infrastructure
   4 //
   5 // This file is distributed under the University of Illinois Open Source
   6 // License. See LICENSE.TXT for details.
   7 //
   8 //===----------------------------------------------------------------------===//
   9 //
  10 // This file declares RISCV-specific per-machine-function information.
  11 //
  12 //===----------------------------------------------------------------------===//
  13
  14 #ifndef LLVM_LIB_TARGET_RISCV_RISCVMACHINEFUNCTIONINFO_H
  15 #define LLVM_LIB_TARGET_RISCV_RISCVMACHINEFUNCTIONINFO_H
  16
  17 #include "llvm/CodeGen/MachineFrameInfo.h"
  18 #include "llvm/CodeGen/MachineFunction.h"
  19
  20 namespace llvm {
  21
  22 /// RISCVMachineFunctionInfo - This class is derived from MachineFunctionInfo
  23 /// and contains private RISCV-specific information for each MachineFunction.
  24 class RISCVMachineFunctionInfo : public MachineFunctionInfo {
  25 private:
  26   MachineFunction &MF;
  27   /// FrameIndex for start of varargs area
  28   int VarArgsFrameIndex = 0;
  29   /// Size of the save area used for varargs
  30   int VarArgsSaveSize = 0;
  31   /// FrameIndex used for transferring values between 64-bit FPRs and a pair
  32   /// of 32-bit GPRs via the stack.
  33   int MoveF64FrameIndex = -1;
  34
  35 public:
  36   //  RISCVMachineFunctionInfo() = default;
  37
  38   RISCVMachineFunctionInfo(MachineFunction &MF) : MF(MF) {}
  39
  40   int getVarArgsFrameIndex() const { return VarArgsFrameIndex; }
  41   void setVarArgsFrameIndex(int Index) { VarArgsFrameIndex = Index; }
  42
  43   unsigned getVarArgsSaveSize() const { return VarArgsSaveSize; }
  44   void setVarArgsSaveSize(int Size) { VarArgsSaveSize = Size; }
  45
  46   int getMoveF64FrameIndex() {
  47     if (MoveF64FrameIndex == -1)
  48       MoveF64FrameIndex = MF.getFrameInfo().CreateStackObject(8, 8, false);
  49     return MoveF64FrameIndex;
  50   }
  51 };
  52
  53 } // end namespace llvm
  54
  55 #endif // LLVM_LIB_TARGET_RISCV_RISCVMACHINEFUNCTIONINFO_H