lib/Target/Nios2/Nios2Subtarget.h

   1 //===-- Nios2Subtarget.h - Define Subtarget for the Nios2 -------*- 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 Nios2 specific subclass of TargetSubtargetInfo.
  11 //
  12 //===----------------------------------------------------------------------===//
  13
  14 #ifndef LLVM_LIB_TARGET_NIOS2_NIOS2SUBTARGET_H
  15 #define LLVM_LIB_TARGET_NIOS2_NIOS2SUBTARGET_H
  16
  17 #include "Nios2FrameLowering.h"
  18 #include "Nios2ISelLowering.h"
  19 #include "Nios2InstrInfo.h"
  20 #include "llvm/CodeGen/SelectionDAGTargetInfo.h"
  21 #include "llvm/CodeGen/TargetFrameLowering.h"
  22 #include "llvm/CodeGen/TargetSubtargetInfo.h"
  23
  24 #define GET_SUBTARGETINFO_HEADER
  25 #include "Nios2GenSubtargetInfo.inc"
  26
  27 namespace llvm {
  28 class StringRef;
  29
  30 class Nios2TargetMachine;
  31
  32 class Nios2Subtarget : public Nios2GenSubtargetInfo {
  33   virtual void anchor();
  34
  35 public:
  36   // Nios2 R2 features
  37   // Bit manipulation instructions extension
  38   bool HasBMX;
  39   // Code Density instructions extension
  40   bool HasCDX;
  41   // Multi-Processor instructions extension
  42   bool HasMPX;
  43   // New mandatory instructions
  44   bool HasR2Mandatory;
  45
  46 protected:
  47   enum Nios2ArchEnum {
  48     // Nios2 R1 ISA
  49     Nios2r1,
  50     // Nios2 R2 ISA
  51     Nios2r2
  52   };
  53
  54   // Nios2 architecture version
  55   Nios2ArchEnum Nios2ArchVersion;
  56
  57   Triple TargetTriple;
  58
  59   Nios2InstrInfo InstrInfo;
  60   Nios2TargetLowering TLInfo;
  61   SelectionDAGTargetInfo TSInfo;
  62   Nios2FrameLowering FrameLowering;
  63
  64 public:
  65   /// This constructor initializes the data members to match that
  66   /// of the specified triple.
  67   Nios2Subtarget(const Triple &TT, const std::string &CPU,
  68                  const std::string &FS, const TargetMachine &TM);
  69
  70   /// ParseSubtargetFeatures - Parses features string setting specified
  71   /// subtarget options.  Definition of function is auto generated by tblgen.
  72   void ParseSubtargetFeatures(StringRef CPU, StringRef FS);
  73
  74   bool hasNios2r1() const { return Nios2ArchVersion >= Nios2r1; }
  75   bool isNios2r1() const { return Nios2ArchVersion == Nios2r1; }
  76   bool hasNios2r2() const { return Nios2ArchVersion >= Nios2r2; }
  77   bool isNios2r2() const { return Nios2ArchVersion == Nios2r2; }
  78
  79   Nios2Subtarget &initializeSubtargetDependencies(StringRef CPU, StringRef FS);
  80
  81   const Nios2InstrInfo *getInstrInfo() const override { return &InstrInfo; }
  82   const TargetFrameLowering *getFrameLowering() const override {
  83     return &FrameLowering;
  84   }
  85   const Nios2RegisterInfo *getRegisterInfo() const override {
  86     return &InstrInfo.getRegisterInfo();
  87   }
  88   const Nios2TargetLowering *getTargetLowering() const override {
  89     return &TLInfo;
  90   }
  91   const SelectionDAGTargetInfo *getSelectionDAGInfo() const override {
  92     return &TSInfo;
  93   }
  94 };
  95 } // namespace llvm
  96
  97 #endif