Home | History | Annotate | Download | only in RISCV 
      1 //===-- RISCVSubtarget.h - Define Subtarget for the RISCV -------*- 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 the RISCV specific subclass of TargetSubtargetInfo.
     11 //
     12 //===----------------------------------------------------------------------===//
     13 
     14 #ifndef LLVM_LIB_TARGET_RISCV_RISCVSUBTARGET_H
     15 #define LLVM_LIB_TARGET_RISCV_RISCVSUBTARGET_H
     16 
     17 #include "RISCVFrameLowering.h"
     18 #include "RISCVISelLowering.h"
     19 #include "RISCVInstrInfo.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 EnableLinkerRelax = false;
     40   unsigned XLen = 32;
     41   MVT XLenVT = MVT::i32;
     42   RISCVFrameLowering FrameLowering;
     43   RISCVInstrInfo InstrInfo;
     44   RISCVRegisterInfo RegInfo;
     45   RISCVTargetLowering TLInfo;
     46   SelectionDAGTargetInfo TSInfo;
     47 
     48   /// Initializes using the passed in CPU and feature strings so that we can
     49   /// use initializer lists for subtarget initialization.
     50   RISCVSubtarget &initializeSubtargetDependencies(StringRef CPU, StringRef FS,
     51                                                   bool Is64Bit);
     52 
     53 public:
     54   // Initializes the data members to match that of the specified triple.
     55   RISCVSubtarget(const Triple &TT, const std::string &CPU,
     56                  const std::string &FS, const TargetMachine &TM);
     57 
     58   // Parses features string setting specified subtarget options. The
     59   // definition of this function is auto-generated by tblgen.
     60   void ParseSubtargetFeatures(StringRef CPU, StringRef FS);
     61 
     62   const RISCVFrameLowering *getFrameLowering() const override {
     63     return &FrameLowering;
     64   }
     65   const RISCVInstrInfo *getInstrInfo() const override { return &InstrInfo; }
     66   const RISCVRegisterInfo *getRegisterInfo() const override {
     67     return &RegInfo;
     68   }
     69   const RISCVTargetLowering *getTargetLowering() const override {
     70     return &TLInfo;
     71   }
     72   const SelectionDAGTargetInfo *getSelectionDAGInfo() const override {
     73     return &TSInfo;
     74   }
     75   bool hasStdExtM() const { return HasStdExtM; }
     76   bool hasStdExtA() const { return HasStdExtA; }
     77   bool hasStdExtF() const { return HasStdExtF; }
     78   bool hasStdExtD() const { return HasStdExtD; }
     79   bool hasStdExtC() const { return HasStdExtC; }
     80   bool is64Bit() const { return HasRV64; }
     81   bool enableLinkerRelax() const { return EnableLinkerRelax; }
     82   MVT getXLenVT() const { return XLenVT; }
     83   unsigned getXLen() const { return XLen; }
     84 };
     85 } // End llvm namespace
     86 
     87 #endif
     88