text: //===-- RISCVSubtarget.h - Define Subtarget for the RISCV -------*- 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 the RISCV specific subclass of TargetSubtargetInfo.
  //
  //===----------------------------------------------------------------------===//
  
  #ifndef LLVM_LIB_TARGET_RISCV_RISCVSUBTARGET_H
  #define LLVM_LIB_TARGET_RISCV_RISCVSUBTARGET_H
  
  #include "RISCVFrameLowering.h"
  #include "RISCVISelLowering.h"
  #include "RISCVInstrInfo.h"
  #include "llvm/CodeGen/SelectionDAGTargetInfo.h"
  #include "llvm/CodeGen/TargetSubtargetInfo.h"
  #include "llvm/IR/DataLayout.h"
  #include "llvm/Target/TargetMachine.h"
  
  #define GET_SUBTARGETINFO_HEADER
  #include "RISCVGenSubtargetInfo.inc"
  
  namespace llvm {
  class StringRef;
  
  class RISCVSubtarget : public RISCVGenSubtargetInfo {
    virtual void anchor();
    bool HasStdExtM = false;
    bool HasStdExtA = false;
    bool HasStdExtF = false;
    bool HasStdExtD = false;
    bool HasStdExtC = false;
    bool HasRV64 = false;
    bool EnableLinkerRelax = false;
    unsigned XLen = 32;
    MVT XLenVT = MVT::i32;
    RISCVFrameLowering FrameLowering;
    RISCVInstrInfo InstrInfo;
    RISCVRegisterInfo RegInfo;
    RISCVTargetLowering TLInfo;
    SelectionDAGTargetInfo TSInfo;
  
    /// Initializes using the passed in CPU and feature strings so that we can
    /// use initializer lists for subtarget initialization.
    RISCVSubtarget &initializeSubtargetDependencies(StringRef CPU, StringRef FS,
                                                    bool Is64Bit);
  
  public:
    // Initializes the data members to match that of the specified triple.
    RISCVSubtarget(const Triple &TT, const std::string &CPU,
                   const std::string &FS, const TargetMachine &TM);
  
    // Parses features string setting specified subtarget options. The
    // definition of this function is auto-generated by tblgen.
    void ParseSubtargetFeatures(StringRef CPU, StringRef FS);
  
    const RISCVFrameLowering *getFrameLowering() const override {
      return &FrameLowering;
    }
    const RISCVInstrInfo *getInstrInfo() const override { return &InstrInfo; }
    const RISCVRegisterInfo *getRegisterInfo() const override {
      return &RegInfo;
    }
    const RISCVTargetLowering *getTargetLowering() const override {
      return &TLInfo;
    }
    const SelectionDAGTargetInfo *getSelectionDAGInfo() const override {
      return &TSInfo;
    }
    bool hasStdExtM() const { return HasStdExtM; }
    bool hasStdExtA() const { return HasStdExtA; }
    bool hasStdExtF() const { return HasStdExtF; }
    bool hasStdExtD() const { return HasStdExtD; }
    bool hasStdExtC() const { return HasStdExtC; }
    bool is64Bit() const { return HasRV64; }
    bool enableLinkerRelax() const { return EnableLinkerRelax; }
    MVT getXLenVT() const { return XLenVT; }
    unsigned getXLen() const { return XLen; }
  };
  } // End llvm namespace
  
  #endif
  