lib/Target/AVR/AVRSubtarget.h

   1 //===-- AVRSubtarget.h - Define Subtarget for the AVR -----------*- 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 AVR specific subclass of TargetSubtargetInfo.
  10 //
  11 //===----------------------------------------------------------------------===//
  12
  13 #ifndef LLVM_AVR_SUBTARGET_H
  14 #define LLVM_AVR_SUBTARGET_H
  15
  16 #include "llvm/CodeGen/TargetSubtargetInfo.h"
  17 #include "llvm/IR/DataLayout.h"
  18 #include "llvm/Target/TargetMachine.h"
  19
  20 #include "AVRFrameLowering.h"
  21 #include "AVRISelLowering.h"
  22 #include "AVRInstrInfo.h"
  23 #include "AVRSelectionDAGInfo.h"
  24
  25 #define GET_SUBTARGETINFO_HEADER
  26 #include "AVRGenSubtargetInfo.inc"
  27
  28 namespace llvm {
  29
  30 /// A specific AVR target MCU.
  31 class AVRSubtarget : public AVRGenSubtargetInfo {
  32 public:
  33   //! Creates an AVR subtarget.
  34   //! \param TT  The target triple.
  35   //! \param CPU The CPU to target.
  36   //! \param FS  The feature string.
  37   //! \param TM  The target machine.
  38   AVRSubtarget(const Triple &TT, const std::string &CPU, const std::string &FS,
  39                const AVRTargetMachine &TM);
  40
  41   const AVRInstrInfo *getInstrInfo() const override { return &InstrInfo; }
  42   const TargetFrameLowering *getFrameLowering() const override { return &FrameLowering; }
  43   const AVRTargetLowering *getTargetLowering() const override { return &TLInfo; }
  44   const AVRSelectionDAGInfo *getSelectionDAGInfo() const override { return &TSInfo; }
  45   const AVRRegisterInfo *getRegisterInfo() const override { return &InstrInfo.getRegisterInfo(); }
  46
  47   /// Parses a subtarget feature string, setting appropriate options.
  48   /// \note Definition of function is auto generated by `tblgen`.
  49   void ParseSubtargetFeatures(StringRef CPU, StringRef FS);
  50
  51   AVRSubtarget &initializeSubtargetDependencies(StringRef CPU, StringRef FS,
  52                                                 const TargetMachine &TM);
  53
  54   // Subtarget feature getters.
  55   // See AVR.td for details.
  56   bool hasSRAM() const { return m_hasSRAM; }
  57   bool hasJMPCALL() const { return m_hasJMPCALL; }
  58   bool hasIJMPCALL() const { return m_hasIJMPCALL; }
  59   bool hasEIJMPCALL() const { return m_hasEIJMPCALL; }
  60   bool hasADDSUBIW() const { return m_hasADDSUBIW; }
  61   bool hasSmallStack() const { return m_hasSmallStack; }
  62   bool hasMOVW() const { return m_hasMOVW; }
  63   bool hasLPM() const { return m_hasLPM; }
  64   bool hasLPMX() const { return m_hasLPMX; }
  65   bool hasELPM() const { return m_hasELPM; }
  66   bool hasELPMX() const { return m_hasELPMX; }
  67   bool hasSPM() const { return m_hasSPM; }
  68   bool hasSPMX() const { return m_hasSPMX; }
  69   bool hasDES() const { return m_hasDES; }
  70   bool supportsRMW() const { return m_supportsRMW; }
  71   bool supportsMultiplication() const { return m_supportsMultiplication; }
  72   bool hasBREAK() const { return m_hasBREAK; }
  73   bool hasTinyEncoding() const { return m_hasTinyEncoding; }
  74
  75   /// Gets the ELF architecture for the e_flags field
  76   /// of an ELF object file.
  77   unsigned getELFArch() const {
  78     assert(ELFArch != 0 &&
  79            "every device must have an associate ELF architecture");
  80     return ELFArch;
  81   }
  82
  83 private:
  84   AVRInstrInfo InstrInfo;
  85   AVRFrameLowering FrameLowering;
  86   AVRTargetLowering TLInfo;
  87   AVRSelectionDAGInfo TSInfo;
  88
  89   // Subtarget feature settings
  90   // See AVR.td for details.
  91   bool m_hasSRAM;
  92   bool m_hasJMPCALL;
  93   bool m_hasIJMPCALL;
  94   bool m_hasEIJMPCALL;
  95   bool m_hasADDSUBIW;
  96   bool m_hasSmallStack;
  97   bool m_hasMOVW;
  98   bool m_hasLPM;
  99   bool m_hasLPMX;
 100   bool m_hasELPM;
 101   bool m_hasELPMX;
 102   bool m_hasSPM;
 103   bool m_hasSPMX;
 104   bool m_hasDES;
 105   bool m_supportsRMW;
 106   bool m_supportsMultiplication;
 107   bool m_hasBREAK;
 108   bool m_hasTinyEncoding;
 109
 110   /// The ELF e_flags architecture.
 111   unsigned ELFArch;
 112
 113   // Dummy member, used by FeatureSet's. We cannot have a SubtargetFeature with
 114   // no variable, so we instead bind pseudo features to this variable.
 115   bool m_FeatureSetDummy;
 116 };
 117
 118 } // end namespace llvm
 119
 120 #endif // LLVM_AVR_SUBTARGET_H