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 "Utils/RISCVBaseInfo.h"
  20 #include "llvm/CodeGen/SelectionDAGTargetInfo.h"
  21 #include "llvm/CodeGen/TargetSubtargetInfo.h"
  22 #include "llvm/IR/DataLayout.h"
  23 #include "llvm/Target/TargetMachine.h"
  24
  25 #define GET_SUBTARGETINFO_HEADER
  26 #include "RISCVGenSubtargetInfo.inc"
  27
  28 namespace llvm {
  29 class StringRef;
  30
  31 class RISCVSubtarget : public RISCVGenSubtargetInfo {
  32   virtual void anchor();
  33   bool HasStdExtM = false;
  34   bool HasStdExtA = false;
  35   bool HasStdExtF = false;
  36   bool HasStdExtD = false;
  37   bool HasStdExtC = false;
  38   bool HasRV64 = false;
  39   bool IsRV32E = false;
  40   bool EnableLinkerRelax = false;
  41   unsigned XLen = 32;
  42   MVT XLenVT = MVT::i32;
  43   RISCVABI::ABI TargetABI = RISCVABI::ABI_Unknown;
  44   RISCVFrameLowering FrameLowering;
  45   RISCVInstrInfo InstrInfo;
  46   RISCVRegisterInfo RegInfo;
  47   RISCVTargetLowering TLInfo;
  48   SelectionDAGTargetInfo TSInfo;
  49
  50   /// Initializes using the passed in CPU and feature strings so that we can
  51   /// use initializer lists for subtarget initialization.
  52   RISCVSubtarget &initializeSubtargetDependencies(const Triple &TT,
  53                                                   StringRef CPU, StringRef FS,
  54                                                   StringRef ABIName);
  55
  56 public:
  57   // Initializes the data members to match that of the specified triple.
  58   RISCVSubtarget(const Triple &TT, StringRef CPU, StringRef FS,
  59                  StringRef ABIName, const TargetMachine &TM);
  60
  61   // Parses features string setting specified subtarget options. The
  62   // definition of this function is auto-generated by tblgen.
  63   void ParseSubtargetFeatures(StringRef CPU, StringRef FS);
  64
  65   const RISCVFrameLowering *getFrameLowering() const override {
  66     return &FrameLowering;
  67   }
  68   const RISCVInstrInfo *getInstrInfo() const override { return &InstrInfo; }
  69   const RISCVRegisterInfo *getRegisterInfo() const override {
  70     return &RegInfo;
  71   }
  72   const RISCVTargetLowering *getTargetLowering() const override {
  73     return &TLInfo;
  74   }
  75   const SelectionDAGTargetInfo *getSelectionDAGInfo() const override {
  76     return &TSInfo;
  77   }
  78   bool hasStdExtM() const { return HasStdExtM; }
  79   bool hasStdExtA() const { return HasStdExtA; }
  80   bool hasStdExtF() const { return HasStdExtF; }
  81   bool hasStdExtD() const { return HasStdExtD; }
  82   bool hasStdExtC() const { return HasStdExtC; }
  83   bool is64Bit() const { return HasRV64; }
  84   bool isRV32E() const { return IsRV32E; }
  85   bool enableLinkerRelax() const { return EnableLinkerRelax; }
  86   MVT getXLenVT() const { return XLenVT; }
  87   unsigned getXLen() const { return XLen; }
  88   RISCVABI::ABI getTargetABI() const { return TargetABI; }
  89 };
  90 } // End llvm namespace
  91
  92 #endif