3030
3131namespace llvm
3232{
33-
34- class StringRef ;
35-
33+ // ! \brief Holds information about an AVR subtarget.
3634class AVRSubtarget : public AVRGenSubtargetInfo
3735{
3836 virtual void anchor ();
37+
3938public:
40- // / This constructor initializes the data members to match that
41- // / of the specified triple.
42- // /
39+ // ! \brief Creates an AVR subtarget.
40+ // ! \param TT The target triple.
41+ // ! \param CPU The CPU to target.
42+ // ! \param FS The feature string.
43+ // ! \param TM The target machine.
4344 AVRSubtarget (const std::string &TT, const std::string &CPU,
4445 const std::string &FS, AVRTargetMachine &TM);
4546
@@ -49,62 +50,63 @@ class AVRSubtarget : public AVRGenSubtargetInfo
4950 const AVRSelectionDAGInfo *getSelectionDAGInfo () const override { return &TSInfo; }
5051 const AVRRegisterInfo *getRegisterInfo () const override { return &InstrInfo.getRegisterInfo (); }
5152
52- // / ParseSubtargetFeatures - Parses features string setting specified
53- // / subtarget options. Definition of function is auto generated by tblgen.
53+ // / \brief Parses a subtarget feature string, setting appropriate options.
54+ // / \note Definition of function is auto generated by ` tblgen` .
5455 void ParseSubtargetFeatures (StringRef CPU, StringRef FS);
5556
56- bool hasLPM () const { return this ->HasLPM ; }
57- bool hasLPMX () const { return this ->HasLPMX ; }
58-
59- bool hasELPM () const { return this ->HasELPM ; }
60- bool hasELPMX () const { return this ->HasELPMX ; }
61-
62- bool hasSPM () const { return this ->HasSPM ; }
63- bool hasSPMX () const { return this ->HasSPMX ; }
64-
65- bool hasMUL () const { return this ->HasMUL ; }
66- bool hasFMUL () const { return this ->HasFMUL ; }
67-
68- bool hasMOVW () const { return this ->HasMOVW ; }
69- bool hasDES () const { return this ->HasDES ; }
70- bool hasBREAK () const { return this ->HasBREAK ; }
71- bool supportsRMW () const { return this ->SupportsRMW ; }
72-
73- bool hasSRAM () const { return this ->HasSRAM ; }
74- bool hasEIND () const { return this ->HasEIND ; }
75-
76- bool isTiny () const { return this ->IsTiny ; }
77- bool isMega () const { return this ->IsMega ; }
57+ // Subtarget feature getters.
58+ // See AVR.td for details.
59+ bool hasSRAM () const { return this ->m_hasSRAM ; }
60+ bool hasJMPCALL () const { return this ->m_hasJMPCALL ; }
61+ bool hasIJMPCALL () const { return this ->m_hasIJMPCALL ; }
62+ bool hasEIJMPCALL () const { return this ->m_hasEIJMPCALL ; }
63+ bool hasADDSUBIW () const { return this ->m_hasADDSUBIW ; }
64+ bool hasSmallStack () const { return m_hasSmallStack; }
65+ bool hasMOVW () const { return this ->m_hasMOVW ; }
66+ bool hasLPM () const { return this ->m_hasLPM ; }
67+ bool hasLPMX () const { return this ->m_hasLPMX ; }
68+ bool hasELPM () const { return this ->m_hasELPM ; }
69+ bool hasELPMX () const { return this ->m_hasELPMX ; }
70+ bool hasSPM () const { return this ->m_hasSPM ; }
71+ bool hasSPMX () const { return this ->m_hasSPMX ; }
72+ bool hasDES () const { return this ->m_hasDES ; }
73+ bool supportsRMW () const { return this ->m_supportsRMW ; }
74+ bool supportsMultiplication () const { return this ->m_supportsMultiplication ; }
75+ bool hasBREAK () const { return this ->m_hasBREAK ; }
76+ bool hasTinyEncoding () const { return this ->m_hasTinyEncoding ; }
7877
7978private:
8079
8180 AVRInstrInfo InstrInfo;
8281 AVRFrameLowering FrameLowering;
8382 AVRTargetLowering TLInfo;
8483 AVRSelectionDAGInfo TSInfo;
85-
86- // Supported instructions
87- bool HasLPM;
88- bool HasLPMX;
89- bool HasELPM;
90- bool HasELPMX;
91- bool HasSPM;
92- bool HasSPMX;
93- bool HasMUL;
94- bool HasFMUL;
95- bool HasMOVW;
96- bool HasDES;
97- bool HasBREAK;
98- bool SupportsRMW;
99-
100- // Other features
101- bool HasSRAM;
102- bool HasEIND;
103- bool IsTiny;
104- bool IsMega;
105-
84+
85+ // Subtarget feature settings
86+ // See AVR.td for details.
87+ bool m_hasSRAM;
88+ bool m_hasJMPCALL;
89+ bool m_hasIJMPCALL;
90+ bool m_hasEIJMPCALL;
91+ bool m_hasADDSUBIW;
92+ bool m_hasSmallStack;
93+ bool m_hasMOVW;
94+ bool m_hasLPM;
95+ bool m_hasLPMX;
96+ bool m_hasELPM;
97+ bool m_hasELPMX;
98+ bool m_hasSPM;
99+ bool m_hasSPMX;
100+ bool m_hasDES;
101+ bool m_supportsRMW;
102+ bool m_supportsMultiplication;
103+ bool m_hasBREAK;
104+ bool m_hasTinyEncoding;
105+
106106 // Dummy feature value, used by PseudoSubtargetFeature.
107- bool DummyFeature;
107+ // We cannot have a SubtargetFeature with no variable, so
108+ // we instead bind pseudo features to this variable.
109+ bool m_DummyFeature;
108110};
109111
110112} // end namespace llvm
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