lib/Target/AVR/AVRSubtarget.h

   1 //===-- AVRSubtarget.h - Define Subtarget for the AVR -----------*- 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 AVR specific subclass of TargetSubtargetInfo.
  11 //
  12 //===----------------------------------------------------------------------===//
  13
  14 #ifndef LLVM_AVR_SUBTARGET_H
  15 #define LLVM_AVR_SUBTARGET_H
  16
  17 #include "llvm/CodeGen/TargetSubtargetInfo.h"
  18 #include "llvm/IR/DataLayout.h"
  19 #include "llvm/Target/TargetMachine.h"
  20
  21 #include "AVRFrameLowering.h"
  22 #include "AVRISelLowering.h"
  23 #include "AVRInstrInfo.h"
  24 #include "AVRSelectionDAGInfo.h"
  25
  26 #define GET_SUBTARGETINFO_HEADER
  27 #include "AVRGenSubtargetInfo.inc"
  28
  29 namespace llvm {
  30
  31 /// A specific AVR target MCU.
  32 class AVRSubtarget : public AVRGenSubtargetInfo {
  33 public:
  34   //! Creates an AVR subtarget.
  35   //! \param TT  The target triple.
  36   //! \param CPU The CPU to target.
  37   //! \param FS  The feature string.
  38   //! \param TM  The target machine.
  39   AVRSubtarget(const Triple &TT, const std::string &CPU, const std::string &FS,
  40                AVRTargetMachine &TM);
  41
  42   const AVRInstrInfo *getInstrInfo() const override { return &InstrInfo; }
  43   const TargetFrameLowering *getFrameLowering() const override { return &FrameLowering; }
  44   const AVRTargetLowering *getTargetLowering() const override { return &TLInfo; }
  45   const AVRSelectionDAGInfo *getSelectionDAGInfo() const override { return &TSInfo; }
  46   const AVRRegisterInfo *getRegisterInfo() const override { return &InstrInfo.getRegisterInfo(); }
  47
  48   /// Parses a subtarget feature string, setting appropriate options.
  49   /// \note Definition of function is auto generated by `tblgen`.
  50   void ParseSubtargetFeatures(StringRef CPU, StringRef FS);
  51
  52   // Subtarget feature getters.
  53   // See AVR.td for details.
  54   bool hasSRAM() const { return m_hasSRAM; }
  55   bool hasJMPCALL() const { return m_hasJMPCALL; }
  56   bool hasIJMPCALL() const { return m_hasIJMPCALL; }
  57   bool hasEIJMPCALL() const { return m_hasEIJMPCALL; }
  58   bool hasADDSUBIW() const { return m_hasADDSUBIW; }
  59   bool hasSmallStack() const { return m_hasSmallStack; }
  60   bool hasMOVW() const { return m_hasMOVW; }
  61   bool hasLPM() const { return m_hasLPM; }
  62   bool hasLPMX() const { return m_hasLPMX; }
  63   bool hasELPM() const { return m_hasELPM; }
  64   bool hasELPMX() const { return m_hasELPMX; }
  65   bool hasSPM() const { return m_hasSPM; }
  66   bool hasSPMX() const { return m_hasSPMX; }
  67   bool hasDES() const { return m_hasDES; }
  68   bool supportsRMW() const { return m_supportsRMW; }
  69   bool supportsMultiplication() const { return m_supportsMultiplication; }
  70   bool hasBREAK() const { return m_hasBREAK; }
  71   bool hasTinyEncoding() const { return m_hasTinyEncoding; }
  72
  73   /// Gets the ELF architecture for the e_flags field
  74   /// of an ELF object file.
  75   unsigned getELFArch() const {
  76     assert(ELFArch != 0 &&
  77            "every device must have an associate ELF architecture");
  78     return ELFArch;
  79   }
  80
  81 private:
  82   AVRInstrInfo InstrInfo;
  83   AVRFrameLowering FrameLowering;
  84   AVRTargetLowering TLInfo;
  85   AVRSelectionDAGInfo TSInfo;
  86
  87   // Subtarget feature settings
  88   // See AVR.td for details.
  89   bool m_hasSRAM;
  90   bool m_hasJMPCALL;
  91   bool m_hasIJMPCALL;
  92   bool m_hasEIJMPCALL;
  93   bool m_hasADDSUBIW;
  94   bool m_hasSmallStack;
  95   bool m_hasMOVW;
  96   bool m_hasLPM;
  97   bool m_hasLPMX;
  98   bool m_hasELPM;
  99   bool m_hasELPMX;
 100   bool m_hasSPM;
 101   bool m_hasSPMX;
 102   bool m_hasDES;
 103   bool m_supportsRMW;
 104   bool m_supportsMultiplication;
 105   bool m_hasBREAK;
 106   bool m_hasTinyEncoding;
 107
 108   /// The ELF e_flags architecture.
 109   unsigned ELFArch;
 110
 111   // Dummy member, used by FeatureSet's. We cannot have a SubtargetFeature with
 112   // no variable, so we instead bind pseudo features to this variable.
 113   bool m_FeatureSetDummy;
 114 };
 115
 116 } // end namespace llvm
 117
 118 #endif // LLVM_AVR_SUBTARGET_H