lib/Target/RISCV/RISCVSubtarget.h

   1 //===-- RISCVSubtarget.h - Define Subtarget for the RISCV -------*- 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 the RISCV specific subclass of TargetSubtargetInfo.
  10 //
  11 //===----------------------------------------------------------------------===//
  12
  13 #ifndef LLVM_LIB_TARGET_RISCV_RISCVSUBTARGET_H
  14 #define LLVM_LIB_TARGET_RISCV_RISCVSUBTARGET_H
  15
  16 #include "RISCVFrameLowering.h"
  17 #include "RISCVISelLowering.h"
  18 #include "RISCVInstrInfo.h"
  19 #include "llvm/CodeGen/SelectionDAGTargetInfo.h"
  20 #include "llvm/CodeGen/TargetSubtargetInfo.h"
  21 #include "llvm/IR/DataLayout.h"
  22 #include "llvm/Target/TargetMachine.h"
  23
  24 #define GET_SUBTARGETINFO_HEADER
  25 #include "RISCVGenSubtargetInfo.inc"
  26
  27 namespace llvm {
  28 class StringRef;
  29
  30 class RISCVSubtarget : public RISCVGenSubtargetInfo {
  31   virtual void anchor();
  32   bool HasStdExtM = false;
  33   bool HasStdExtA = false;
  34   bool HasStdExtF = false;
  35   bool HasStdExtD = false;
  36   bool HasStdExtC = false;
  37   bool HasRV64 = false;
  38   bool EnableLinkerRelax = false;
  39   unsigned XLen = 32;
  40   MVT XLenVT = MVT::i32;
  41   RISCVFrameLowering FrameLowering;
  42   RISCVInstrInfo InstrInfo;
  43   RISCVRegisterInfo RegInfo;
  44   RISCVTargetLowering TLInfo;
  45   SelectionDAGTargetInfo TSInfo;
  46
  47   /// Initializes using the passed in CPU and feature strings so that we can
  48   /// use initializer lists for subtarget initialization.
  49   RISCVSubtarget &initializeSubtargetDependencies(StringRef CPU, StringRef FS,
  50                                                   bool Is64Bit);
  51
  52 public:
  53   // Initializes the data members to match that of the specified triple.
  54   RISCVSubtarget(const Triple &TT, const std::string &CPU,
  55                  const std::string &FS, const TargetMachine &TM);
  56
  57   // Parses features string setting specified subtarget options. The
  58   // definition of this function is auto-generated by tblgen.
  59   void ParseSubtargetFeatures(StringRef CPU, StringRef FS);
  60
  61   const RISCVFrameLowering *getFrameLowering() const override {
  62     return &FrameLowering;
  63   }
  64   const RISCVInstrInfo *getInstrInfo() const override { return &InstrInfo; }
  65   const RISCVRegisterInfo *getRegisterInfo() const override {
  66     return &RegInfo;
  67   }
  68   const RISCVTargetLowering *getTargetLowering() const override {
  69     return &TLInfo;
  70   }
  71   const SelectionDAGTargetInfo *getSelectionDAGInfo() const override {
  72     return &TSInfo;
  73   }
  74   bool hasStdExtM() const { return HasStdExtM; }
  75   bool hasStdExtA() const { return HasStdExtA; }
  76   bool hasStdExtF() const { return HasStdExtF; }
  77   bool hasStdExtD() const { return HasStdExtD; }
  78   bool hasStdExtC() const { return HasStdExtC; }
  79   bool is64Bit() const { return HasRV64; }
  80   bool enableLinkerRelax() const { return EnableLinkerRelax; }
  81   MVT getXLenVT() const { return XLenVT; }
  82   unsigned getXLen() const { return XLen; }
  83 };
  84 } // End llvm namespace
  85
  86 #endif