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1 //===-- AVRSubtarget.h - Define Subtarget for the AVR -----------*- C++ -*-===//
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2 //
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3 // The LLVM Compiler Infrastructure
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4 //
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5 // This file is distributed under the University of Illinois Open Source
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6 // License. See LICENSE.TXT for details.
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7 //
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8 //===----------------------------------------------------------------------===//
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9 //
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10 // This file declares the AVR specific subclass of TargetSubtargetInfo.
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11 //
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12 //===----------------------------------------------------------------------===//
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13
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14 #ifndef LLVM_AVR_SUBTARGET_H
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15 #define LLVM_AVR_SUBTARGET_H
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16
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17 #include "llvm/IR/DataLayout.h"
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18 #include "llvm/Target/TargetMachine.h"
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121
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19 #include "llvm/Target/TargetSubtargetInfo.h"
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120
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20
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21 #include "AVRFrameLowering.h"
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22 #include "AVRISelLowering.h"
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23 #include "AVRInstrInfo.h"
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24 #include "AVRSelectionDAGInfo.h"
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25
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26 #define GET_SUBTARGETINFO_HEADER
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27 #include "AVRGenSubtargetInfo.inc"
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28
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29 namespace llvm {
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30
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31 /// A specific AVR target MCU.
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32 class AVRSubtarget : public AVRGenSubtargetInfo {
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33 public:
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34 //! Creates an AVR subtarget.
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35 //! \param TT The target triple.
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36 //! \param CPU The CPU to target.
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37 //! \param FS The feature string.
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38 //! \param TM The target machine.
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39 AVRSubtarget(const Triple &TT, const std::string &CPU, const std::string &FS,
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40 AVRTargetMachine &TM);
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41
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42 const AVRInstrInfo *getInstrInfo() const override { return &InstrInfo; }
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43 const TargetFrameLowering *getFrameLowering() const override { return &FrameLowering; }
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44 const AVRTargetLowering *getTargetLowering() const override { return &TLInfo; }
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45 const AVRSelectionDAGInfo *getSelectionDAGInfo() const override { return &TSInfo; }
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46 const AVRRegisterInfo *getRegisterInfo() const override { return &InstrInfo.getRegisterInfo(); }
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47
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48 /// Parses a subtarget feature string, setting appropriate options.
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49 /// \note Definition of function is auto generated by `tblgen`.
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50 void ParseSubtargetFeatures(StringRef CPU, StringRef FS);
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51
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52 // Subtarget feature getters.
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53 // See AVR.td for details.
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54 bool hasSRAM() const { return m_hasSRAM; }
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55 bool hasJMPCALL() const { return m_hasJMPCALL; }
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56 bool hasIJMPCALL() const { return m_hasIJMPCALL; }
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57 bool hasEIJMPCALL() const { return m_hasEIJMPCALL; }
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58 bool hasADDSUBIW() const { return m_hasADDSUBIW; }
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59 bool hasSmallStack() const { return m_hasSmallStack; }
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60 bool hasMOVW() const { return m_hasMOVW; }
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61 bool hasLPM() const { return m_hasLPM; }
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62 bool hasLPMX() const { return m_hasLPMX; }
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63 bool hasELPM() const { return m_hasELPM; }
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64 bool hasELPMX() const { return m_hasELPMX; }
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65 bool hasSPM() const { return m_hasSPM; }
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66 bool hasSPMX() const { return m_hasSPMX; }
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67 bool hasDES() const { return m_hasDES; }
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68 bool supportsRMW() const { return m_supportsRMW; }
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69 bool supportsMultiplication() const { return m_supportsMultiplication; }
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70 bool hasBREAK() const { return m_hasBREAK; }
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71 bool hasTinyEncoding() const { return m_hasTinyEncoding; }
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72
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73 /// Gets the ELF architecture for the e_flags field
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74 /// of an ELF object file.
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75 unsigned getELFArch() const {
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76 assert(ELFArch != 0 &&
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77 "every device must have an associate ELF architecture");
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78 return ELFArch;
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79 }
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80
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81 private:
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82 AVRInstrInfo InstrInfo;
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83 AVRFrameLowering FrameLowering;
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84 AVRTargetLowering TLInfo;
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85 AVRSelectionDAGInfo TSInfo;
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86
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87 // Subtarget feature settings
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88 // See AVR.td for details.
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89 bool m_hasSRAM;
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90 bool m_hasJMPCALL;
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91 bool m_hasIJMPCALL;
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92 bool m_hasEIJMPCALL;
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93 bool m_hasADDSUBIW;
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94 bool m_hasSmallStack;
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95 bool m_hasMOVW;
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96 bool m_hasLPM;
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97 bool m_hasLPMX;
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98 bool m_hasELPM;
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99 bool m_hasELPMX;
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100 bool m_hasSPM;
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101 bool m_hasSPMX;
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102 bool m_hasDES;
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103 bool m_supportsRMW;
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104 bool m_supportsMultiplication;
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105 bool m_hasBREAK;
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106 bool m_hasTinyEncoding;
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107
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108 /// The ELF e_flags architecture.
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109 unsigned ELFArch;
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110
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111 // Dummy member, used by FeatureSet's. We cannot have a SubtargetFeature with
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112 // no variable, so we instead bind pseudo features to this variable.
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113 bool m_FeatureSetDummy;
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114 };
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115
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116 } // end namespace llvm
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117
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118 #endif // LLVM_AVR_SUBTARGET_H
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