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      1 //===--- LangOptions.def - Language option database -------------*- 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 defines the language options. Users of this file must
     11 // define the LANGOPT macro to make use of this information.
     12 // Optionally, the user may also define BENIGN_LANGOPT
     13 // (for options that don't affect the construction of the AST in an
     14 // incompatible way), ENUM_LANGOPT (for options that have enumeration,
     15 // rather than unsigned, type), BENIGN_ENUM_LANGOPT (for benign
     16 // options that have enumeration type), and VALUE_LANGOPT is a language option
     17 // that describes a value rather than a flag.
     18 //
     19 //===----------------------------------------------------------------------===//
     20 #ifndef LANGOPT
     21 #  error Define the LANGOPT macro to handle language options
     22 #endif
     23 
     24 #ifndef VALUE_LANGOPT
     25 #  define VALUE_LANGOPT(Name, Bits, Default, Description) \
     26      LANGOPT(Name, Bits, Default, Description)
     27 #endif
     28 
     29 #ifndef BENIGN_LANGOPT
     30 #  define BENIGN_LANGOPT(Name, Bits, Default, Description) \
     31      LANGOPT(Name, Bits, Default, Description)
     32 #endif
     33 
     34 #ifndef ENUM_LANGOPT
     35 #  define ENUM_LANGOPT(Name, Type, Bits, Default, Description) \
     36      LANGOPT(Name, Bits, Default, Description)
     37 #endif
     38 
     39 #ifndef BENIGN_ENUM_LANGOPT
     40 #  define BENIGN_ENUM_LANGOPT(Name, Type, Bits, Default, Description) \
     41      ENUM_LANGOPT(Name, Type, Bits, Default, Description)
     42 #endif
     43 
     44 LANGOPT(C99               , 1, 0, "C99")
     45 LANGOPT(C11               , 1, 0, "C11")
     46 LANGOPT(MicrosoftExt      , 1, 0, "Microsoft extensions")
     47 LANGOPT(MicrosoftMode     , 1, 0, "Microsoft compatibility mode")
     48 LANGOPT(AsmBlocks         , 1, 0, "Microsoft inline asm blocks")
     49 LANGOPT(Borland           , 1, 0, "Borland extensions")
     50 LANGOPT(CPlusPlus         , 1, 0, "C++")
     51 LANGOPT(CPlusPlus11       , 1, 0, "C++0x")
     52 LANGOPT(CPlusPlus1y       , 1, 0, "C++1y")
     53 LANGOPT(ObjC1             , 1, 0, "Objective-C 1")
     54 LANGOPT(ObjC2             , 1, 0, "Objective-C 2")
     55 BENIGN_LANGOPT(ObjCDefaultSynthProperties , 1, 0,
     56                "Objective-C auto-synthesized properties")
     57 BENIGN_LANGOPT(EncodeExtendedBlockSig , 1, 0,
     58                "Encoding extended block type signature")
     59 BENIGN_LANGOPT(ObjCInferRelatedResultType , 1, 1,
     60                "Objective-C related result type inference")
     61 LANGOPT(Trigraphs         , 1, 0,"trigraphs")
     62 LANGOPT(LineComment       , 1, 0, "'//' comments")
     63 LANGOPT(Bool              , 1, 0, "bool, true, and false keywords")
     64 LANGOPT(WChar             , 1, CPlusPlus, "wchar_t keyword")
     65 BENIGN_LANGOPT(DollarIdents   , 1, 1, "'$' in identifiers")
     66 BENIGN_LANGOPT(AsmPreprocessor, 1, 0, "preprocessor in asm mode")
     67 BENIGN_LANGOPT(GNUMode        , 1, 1, "GNU extensions")
     68 LANGOPT(GNUKeywords       , 1, 1, "GNU keywords")
     69 BENIGN_LANGOPT(ImplicitInt, 1, !C99 && !CPlusPlus, "C89 implicit 'int'")
     70 LANGOPT(Digraphs          , 1, 0, "digraphs")
     71 BENIGN_LANGOPT(HexFloats  , 1, C99, "C99 hexadecimal float constants")
     72 LANGOPT(CXXOperatorNames  , 1, 0, "C++ operator name keywords")
     73 LANGOPT(AppleKext         , 1, 0, "Apple kext support")
     74 BENIGN_LANGOPT(PascalStrings, 1, 0, "Pascal string support")
     75 LANGOPT(WritableStrings   , 1, 0, "writable string support")
     76 LANGOPT(ConstStrings      , 1, 0, "const-qualified string support")
     77 LANGOPT(LaxVectorConversions , 1, 1, "lax vector conversions")
     78 LANGOPT(AltiVec           , 1, 0, "AltiVec-style vector initializers")
     79 LANGOPT(Exceptions        , 1, 0, "exception handling")
     80 LANGOPT(ObjCExceptions    , 1, 0, "Objective-C exceptions")
     81 LANGOPT(CXXExceptions     , 1, 0, "C++ exceptions")
     82 LANGOPT(SjLjExceptions    , 1, 0, "setjmp-longjump exception handling")
     83 LANGOPT(TraditionalCPP    , 1, 0, "traditional CPP emulation")
     84 LANGOPT(RTTI              , 1, 1, "run-time type information")
     85 LANGOPT(MSBitfields       , 1, 0, "Microsoft-compatible structure layout")
     86 LANGOPT(Freestanding, 1, 0, "freestanding implementation")
     87 LANGOPT(NoBuiltin         , 1, 0, "disable builtin functions")
     88 LANGOPT(NoMathBuiltin     , 1, 0, "disable math builtin functions")
     89 
     90 BENIGN_LANGOPT(ThreadsafeStatics , 1, 1, "thread-safe static initializers")
     91 LANGOPT(POSIXThreads      , 1, 0, "POSIX thread support")
     92 LANGOPT(Blocks            , 1, 0, "blocks extension to C")
     93 BENIGN_LANGOPT(EmitAllDecls      , 1, 0, "support for emitting all declarations")
     94 LANGOPT(MathErrno         , 1, 1, "errno support for math functions")
     95 BENIGN_LANGOPT(HeinousExtensions , 1, 0, "Extensions that we really don't like and may be ripped out at any time")
     96 LANGOPT(Modules           , 1, 0, "modules extension to C")
     97 LANGOPT(Optimize          , 1, 0, "__OPTIMIZE__ predefined macro")
     98 LANGOPT(OptimizeSize      , 1, 0, "__OPTIMIZE_SIZE__ predefined macro")
     99 LANGOPT(Static            , 1, 0, "__STATIC__ predefined macro (as opposed to __DYNAMIC__)")
    100 VALUE_LANGOPT(PackStruct  , 32, 0,
    101               "default struct packing maximum alignment")
    102 VALUE_LANGOPT(PICLevel    , 2, 0, "__PIC__ level")
    103 VALUE_LANGOPT(PIELevel    , 2, 0, "__PIE__ level")
    104 LANGOPT(GNUInline         , 1, 0, "GNU inline semantics")
    105 LANGOPT(NoInlineDefine    , 1, 0, "__NO_INLINE__ predefined macro")
    106 LANGOPT(Deprecated        , 1, 0, "__DEPRECATED predefined macro")
    107 LANGOPT(FastMath          , 1, 0, "__FAST_MATH__ predefined macro")
    108 LANGOPT(FiniteMathOnly    , 1, 0, "__FINITE_MATH_ONLY__ predefined macro")
    109 
    110 BENIGN_LANGOPT(ObjCGCBitmapPrint , 1, 0, "printing of GC's bitmap layout for __weak/__strong ivars")
    111 
    112 BENIGN_LANGOPT(AccessControl     , 1, 1, "C++ access control")
    113 LANGOPT(CharIsSigned      , 1, 1, "signed char")
    114 LANGOPT(ShortWChar        , 1, 0, "unsigned short wchar_t")
    115 
    116 LANGOPT(ShortEnums        , 1, 0, "short enum types")
    117 
    118 LANGOPT(OpenCL            , 1, 0, "OpenCL")
    119 LANGOPT(OpenCLVersion     , 32, 0, "OpenCL version")
    120 LANGOPT(NativeHalfType    , 1, 0, "Native half type support")
    121 LANGOPT(CUDA              , 1, 0, "CUDA")
    122 LANGOPT(OpenMP            , 1, 0, "OpenMP support")
    123 LANGOPT(Renderscript      , 1, 0, "Renderscript")
    124 
    125 LANGOPT(AssumeSaneOperatorNew , 1, 1, "implicit __attribute__((malloc)) for C++'s new operators")
    126 BENIGN_LANGOPT(ElideConstructors , 1, 1, "C++ copy constructor elision")
    127 BENIGN_LANGOPT(DumpRecordLayouts , 1, 0, "dumping the layout of IRgen'd records")
    128 BENIGN_LANGOPT(DumpRecordLayoutsSimple , 1, 0, "dumping the layout of IRgen'd records in a simple form")
    129 BENIGN_LANGOPT(DumpVTableLayouts , 1, 0, "dumping the layouts of emitted vtables")
    130 LANGOPT(NoConstantCFStrings , 1, 0, "no constant CoreFoundation strings")
    131 BENIGN_LANGOPT(InlineVisibilityHidden , 1, 0, "hidden default visibility for inline C++ methods")
    132 BENIGN_LANGOPT(ParseUnknownAnytype, 1, 0, "__unknown_anytype")
    133 BENIGN_LANGOPT(DebuggerSupport , 1, 0, "debugger support")
    134 BENIGN_LANGOPT(DebuggerCastResultToId, 1, 0, "for 'po' in the debugger, cast the result to id if it is of unknown type")
    135 BENIGN_LANGOPT(DebuggerObjCLiteral , 1, 0, "debugger Objective-C literals and subscripting support")
    136 
    137 BENIGN_LANGOPT(SpellChecking , 1, 1, "spell-checking")
    138 LANGOPT(SinglePrecisionConstants , 1, 0, "treating double-precision floating point constants as single precision constants")
    139 LANGOPT(FastRelaxedMath , 1, 0, "OpenCL fast relaxed math")
    140 LANGOPT(DefaultFPContract , 1, 0, "FP_CONTRACT")
    141 LANGOPT(NoBitFieldTypeAlign , 1, 0, "bit-field type alignment")
    142 LANGOPT(HexagonQdsp6Compat , 1, 0, "hexagon-qdsp6 backward compatibility")
    143 LANGOPT(ObjCAutoRefCount , 1, 0, "Objective-C automated reference counting")
    144 LANGOPT(ObjCARCWeak         , 1, 0, "__weak support in the ARC runtime")
    145 LANGOPT(FakeAddressSpaceMap , 1, 0, "OpenCL fake address space map")
    146 
    147 LANGOPT(MRTD , 1, 0, "-mrtd calling convention")
    148 BENIGN_LANGOPT(DelayedTemplateParsing , 1, 0, "delayed template parsing")
    149 LANGOPT(BlocksRuntimeOptional , 1, 0, "optional blocks runtime")
    150 
    151 ENUM_LANGOPT(GC, GCMode, 2, NonGC, "Objective-C Garbage Collection mode")
    152 ENUM_LANGOPT(ValueVisibilityMode, Visibility, 3, DefaultVisibility,
    153              "value symbol visibility")
    154 ENUM_LANGOPT(TypeVisibilityMode, Visibility, 3, DefaultVisibility,
    155              "type symbol visibility")
    156 ENUM_LANGOPT(StackProtector, StackProtectorMode, 2, SSPOff,
    157              "stack protector mode")
    158 ENUM_LANGOPT(SignedOverflowBehavior, SignedOverflowBehaviorTy, 2, SOB_Undefined,
    159              "signed integer overflow handling")
    160 
    161 BENIGN_LANGOPT(InstantiationDepth, 32, 256,
    162                "maximum template instantiation depth")
    163 BENIGN_LANGOPT(ConstexprCallDepth, 32, 512,
    164                "maximum constexpr call depth")
    165 BENIGN_LANGOPT(ConstexprStepLimit, 32, 1048576,
    166                "maximum constexpr evaluation steps")
    167 BENIGN_LANGOPT(BracketDepth, 32, 256,
    168                "maximum bracket nesting depth")
    169 BENIGN_LANGOPT(NumLargeByValueCopy, 32, 0,
    170         "if non-zero, warn about parameter or return Warn if parameter/return value is larger in bytes than this setting. 0 is no check.")
    171 VALUE_LANGOPT(MSCVersion, 32, 0,
    172               "version of Microsoft Visual C/C++")
    173 
    174 LANGOPT(ApplePragmaPack, 1, 0, "Apple gcc-compatible #pragma pack handling")
    175 
    176 BENIGN_LANGOPT(RetainCommentsFromSystemHeaders, 1, 0, "retain documentation comments from system headers in the AST")
    177 
    178 #undef LANGOPT
    179 #undef VALUE_LANGOPT
    180 #undef BENIGN_LANGOPT
    181 #undef ENUM_LANGOPT
    182 #undef BENIGN_ENUM_LANGOPT
    183 
    184