diff options
Diffstat (limited to 'lib/Lex/Preprocessor.cpp')
| -rw-r--r-- | lib/Lex/Preprocessor.cpp | 336 |
1 files changed, 1 insertions, 335 deletions
diff --git a/lib/Lex/Preprocessor.cpp b/lib/Lex/Preprocessor.cpp index a594ad9c5d..be47fcc8fe 100644 --- a/lib/Lex/Preprocessor.cpp +++ b/lib/Lex/Preprocessor.cpp @@ -349,328 +349,6 @@ SourceLocation Preprocessor::getLocForEndOfToken(SourceLocation Loc) { // Preprocessor Initialization Methods //===----------------------------------------------------------------------===// -// Append a #define line to Buf for Macro. Macro should be of the form XXX, -// in which case we emit "#define XXX 1" or "XXX=Y z W" in which case we emit -// "#define XXX Y z W". To get a #define with no value, use "XXX=". -static void DefineBuiltinMacro(std::vector<char> &Buf, const char *Macro, - const char *Command = "#define ") { - Buf.insert(Buf.end(), Command, Command+strlen(Command)); - if (const char *Equal = strchr(Macro, '=')) { - // Turn the = into ' '. - Buf.insert(Buf.end(), Macro, Equal); - Buf.push_back(' '); - Buf.insert(Buf.end(), Equal+1, Equal+strlen(Equal)); - } else { - // Push "macroname 1". - Buf.insert(Buf.end(), Macro, Macro+strlen(Macro)); - Buf.push_back(' '); - Buf.push_back('1'); - } - Buf.push_back('\n'); -} - -/// PickFP - This is used to pick a value based on the FP semantics of the -/// specified FP model. -template <typename T> -static T PickFP(const llvm::fltSemantics *Sem, T IEEESingleVal, - T IEEEDoubleVal, T X87DoubleExtendedVal, T PPCDoubleDoubleVal) { - if (Sem == &llvm::APFloat::IEEEsingle) - return IEEESingleVal; - if (Sem == &llvm::APFloat::IEEEdouble) - return IEEEDoubleVal; - if (Sem == &llvm::APFloat::x87DoubleExtended) - return X87DoubleExtendedVal; - assert(Sem == &llvm::APFloat::PPCDoubleDouble); - return PPCDoubleDoubleVal; -} - -static void DefineFloatMacros(std::vector<char> &Buf, const char *Prefix, - const llvm::fltSemantics *Sem) { - const char *DenormMin, *Epsilon, *Max, *Min; - DenormMin = PickFP(Sem, "1.40129846e-45F", "4.9406564584124654e-324", - "3.64519953188247460253e-4951L", - "4.94065645841246544176568792868221e-324L"); - int Digits = PickFP(Sem, 6, 15, 18, 31); - Epsilon = PickFP(Sem, "1.19209290e-7F", "2.2204460492503131e-16", - "1.08420217248550443401e-19L", - "4.94065645841246544176568792868221e-324L"); - int HasInifinity = 1, HasQuietNaN = 1; - int MantissaDigits = PickFP(Sem, 24, 53, 64, 106); - int Min10Exp = PickFP(Sem, -37, -307, -4931, -291); - int Max10Exp = PickFP(Sem, 38, 308, 4932, 308); - int MinExp = PickFP(Sem, -125, -1021, -16381, -968); - int MaxExp = PickFP(Sem, 128, 1024, 16384, 1024); - Min = PickFP(Sem, "1.17549435e-38F", "2.2250738585072014e-308", - "3.36210314311209350626e-4932L", - "2.00416836000897277799610805135016e-292L"); - Max = PickFP(Sem, "3.40282347e+38F", "1.7976931348623157e+308", - "1.18973149535723176502e+4932L", - "1.79769313486231580793728971405301e+308L"); - - char MacroBuf[60]; - sprintf(MacroBuf, "__%s_DENORM_MIN__=%s", Prefix, DenormMin); - DefineBuiltinMacro(Buf, MacroBuf); - sprintf(MacroBuf, "__%s_DIG__=%d", Prefix, Digits); - DefineBuiltinMacro(Buf, MacroBuf); - sprintf(MacroBuf, "__%s_EPSILON__=%s", Prefix, Epsilon); - DefineBuiltinMacro(Buf, MacroBuf); - sprintf(MacroBuf, "__%s_HAS_INFINITY__=%d", Prefix, HasInifinity); - DefineBuiltinMacro(Buf, MacroBuf); - sprintf(MacroBuf, "__%s_HAS_QUIET_NAN__=%d", Prefix, HasQuietNaN); - DefineBuiltinMacro(Buf, MacroBuf); - sprintf(MacroBuf, "__%s_MANT_DIG__=%d", Prefix, MantissaDigits); - DefineBuiltinMacro(Buf, MacroBuf); - sprintf(MacroBuf, "__%s_MAX_10_EXP__=%d", Prefix, Max10Exp); - DefineBuiltinMacro(Buf, MacroBuf); - sprintf(MacroBuf, "__%s_MAX_EXP__=%d", Prefix, MaxExp); - DefineBuiltinMacro(Buf, MacroBuf); - sprintf(MacroBuf, "__%s_MAX__=%s", Prefix, Max); - DefineBuiltinMacro(Buf, MacroBuf); - sprintf(MacroBuf, "__%s_MIN_10_EXP__=(%d)", Prefix, Min10Exp); - DefineBuiltinMacro(Buf, MacroBuf); - sprintf(MacroBuf, "__%s_MIN_EXP__=(%d)", Prefix, MinExp); - DefineBuiltinMacro(Buf, MacroBuf); - sprintf(MacroBuf, "__%s_MIN__=%s", Prefix, Min); - DefineBuiltinMacro(Buf, MacroBuf); - sprintf(MacroBuf, "__%s_HAS_DENORM__=1", Prefix); - DefineBuiltinMacro(Buf, MacroBuf); -} - - -/// DefineTypeSize - Emit a macro to the predefines buffer that declares a macro -/// named MacroName with the max value for a type with width 'TypeWidth' a -/// signedness of 'isSigned' and with a value suffix of 'ValSuffix' (e.g. LL). -static void DefineTypeSize(const char *MacroName, unsigned TypeWidth, - const char *ValSuffix, bool isSigned, - std::vector<char> &Buf) { - char MacroBuf[60]; - long long MaxVal; - if (isSigned) - MaxVal = (1LL << (TypeWidth - 1)) - 1; - else - MaxVal = ~0LL >> (64-TypeWidth); - - sprintf(MacroBuf, "%s=%llu%s", MacroName, MaxVal, ValSuffix); - DefineBuiltinMacro(Buf, MacroBuf); -} - -static void DefineType(const char *MacroName, TargetInfo::IntType Ty, - std::vector<char> &Buf) { - char MacroBuf[60]; - sprintf(MacroBuf, "%s=%s", MacroName, TargetInfo::getTypeName(Ty)); - DefineBuiltinMacro(Buf, MacroBuf); -} - - -static void InitializePredefinedMacros(Preprocessor &PP, - std::vector<char> &Buf) { - char MacroBuf[60]; - // Compiler version introspection macros. - DefineBuiltinMacro(Buf, "__llvm__=1"); // LLVM Backend - DefineBuiltinMacro(Buf, "__clang__=1"); // Clang Frontend - - // Currently claim to be compatible with GCC 4.2.1-5621. - DefineBuiltinMacro(Buf, "__APPLE_CC__=5621"); - DefineBuiltinMacro(Buf, "__GNUC_MINOR__=2"); - DefineBuiltinMacro(Buf, "__GNUC_PATCHLEVEL__=1"); - DefineBuiltinMacro(Buf, "__GNUC__=4"); - DefineBuiltinMacro(Buf, "__GXX_ABI_VERSION=1002"); - DefineBuiltinMacro(Buf, "__VERSION__=\"4.2.1 Compatible Clang Compiler\""); - - - // Initialize language-specific preprocessor defines. - - // These should all be defined in the preprocessor according to the - // current language configuration. - if (!PP.getLangOptions().Microsoft) - DefineBuiltinMacro(Buf, "__STDC__=1"); - if (PP.getLangOptions().AsmPreprocessor) - DefineBuiltinMacro(Buf, "__ASSEMBLER__=1"); - if (PP.getLangOptions().C99 && !PP.getLangOptions().CPlusPlus) - DefineBuiltinMacro(Buf, "__STDC_VERSION__=199901L"); - else if (0) // STDC94 ? - DefineBuiltinMacro(Buf, "__STDC_VERSION__=199409L"); - - // Standard conforming mode? - if (!PP.getLangOptions().GNUMode) - DefineBuiltinMacro(Buf, "__STRICT_ANSI__=1"); - - if (PP.getLangOptions().CPlusPlus0x) - DefineBuiltinMacro(Buf, "__GXX_EXPERIMENTAL_CXX0X__"); - - if (PP.getLangOptions().Freestanding) - DefineBuiltinMacro(Buf, "__STDC_HOSTED__=0"); - else - DefineBuiltinMacro(Buf, "__STDC_HOSTED__=1"); - - if (PP.getLangOptions().ObjC1) { - DefineBuiltinMacro(Buf, "__OBJC__=1"); - if (PP.getLangOptions().ObjCNonFragileABI) { - DefineBuiltinMacro(Buf, "__OBJC2__=1"); - DefineBuiltinMacro(Buf, "OBJC_ZEROCOST_EXCEPTIONS=1"); - DefineBuiltinMacro(Buf, "__EXCEPTIONS=1"); - } - - if (PP.getLangOptions().getGCMode() != LangOptions::NonGC) - DefineBuiltinMacro(Buf, "__OBJC_GC__=1"); - - if (PP.getLangOptions().NeXTRuntime) - DefineBuiltinMacro(Buf, "__NEXT_RUNTIME__=1"); - } - - // darwin_constant_cfstrings controls this. This is also dependent - // on other things like the runtime I believe. This is set even for C code. - DefineBuiltinMacro(Buf, "__CONSTANT_CFSTRINGS__=1"); - - if (PP.getLangOptions().ObjC2) - DefineBuiltinMacro(Buf, "OBJC_NEW_PROPERTIES"); - - if (PP.getLangOptions().PascalStrings) - DefineBuiltinMacro(Buf, "__PASCAL_STRINGS__"); - - if (PP.getLangOptions().Blocks) { - DefineBuiltinMacro(Buf, "__block=__attribute__((__blocks__(byref)))"); - DefineBuiltinMacro(Buf, "__BLOCKS__=1"); - } - - if (PP.getLangOptions().CPlusPlus) { - DefineBuiltinMacro(Buf, "__DEPRECATED=1"); - DefineBuiltinMacro(Buf, "__EXCEPTIONS=1"); - DefineBuiltinMacro(Buf, "__GNUG__=4"); - DefineBuiltinMacro(Buf, "__GXX_WEAK__=1"); - DefineBuiltinMacro(Buf, "__cplusplus=1"); - DefineBuiltinMacro(Buf, "__private_extern__=extern"); - } - - // Filter out some microsoft extensions when trying to parse in ms-compat - // mode. - if (PP.getLangOptions().Microsoft) { - DefineBuiltinMacro(Buf, "_cdecl=__cdecl"); - DefineBuiltinMacro(Buf, "__int8=__INT8_TYPE__"); - DefineBuiltinMacro(Buf, "__int16=__INT16_TYPE__"); - DefineBuiltinMacro(Buf, "__int32=__INT32_TYPE__"); - DefineBuiltinMacro(Buf, "__int64=__INT64_TYPE__"); - } - - if (PP.getLangOptions().Optimize) - DefineBuiltinMacro(Buf, "__OPTIMIZE__=1"); - if (PP.getLangOptions().OptimizeSize) - DefineBuiltinMacro(Buf, "__OPTIMIZE_SIZE__=1"); - - // Initialize target-specific preprocessor defines. - const TargetInfo &TI = PP.getTargetInfo(); - - // Define type sizing macros based on the target properties. - assert(TI.getCharWidth() == 8 && "Only support 8-bit char so far"); - DefineBuiltinMacro(Buf, "__CHAR_BIT__=8"); - - unsigned IntMaxWidth; - const char *IntMaxSuffix; - if (TI.getIntMaxType() == TargetInfo::SignedLongLong) { - IntMaxWidth = TI.getLongLongWidth(); - IntMaxSuffix = "LL"; - } else if (TI.getIntMaxType() == TargetInfo::SignedLong) { - IntMaxWidth = TI.getLongWidth(); - IntMaxSuffix = "L"; - } else { - assert(TI.getIntMaxType() == TargetInfo::SignedInt); - IntMaxWidth = TI.getIntWidth(); - IntMaxSuffix = ""; - } - - DefineTypeSize("__SCHAR_MAX__", TI.getCharWidth(), "", true, Buf); - DefineTypeSize("__SHRT_MAX__", TI.getShortWidth(), "", true, Buf); - DefineTypeSize("__INT_MAX__", TI.getIntWidth(), "", true, Buf); - DefineTypeSize("__LONG_MAX__", TI.getLongWidth(), "L", true, Buf); - DefineTypeSize("__LONG_LONG_MAX__", TI.getLongLongWidth(), "LL", true, Buf); - DefineTypeSize("__WCHAR_MAX__", TI.getWCharWidth(), "", true, Buf); - DefineTypeSize("__INTMAX_MAX__", IntMaxWidth, IntMaxSuffix, true, Buf); - - DefineType("__INTMAX_TYPE__", TI.getIntMaxType(), Buf); - DefineType("__UINTMAX_TYPE__", TI.getUIntMaxType(), Buf); - DefineType("__PTRDIFF_TYPE__", TI.getPtrDiffType(0), Buf); - DefineType("__INTPTR_TYPE__", TI.getIntPtrType(), Buf); - DefineType("__SIZE_TYPE__", TI.getSizeType(), Buf); - DefineType("__WCHAR_TYPE__", TI.getWCharType(), Buf); - // FIXME: TargetInfo hookize __WINT_TYPE__. - DefineBuiltinMacro(Buf, "__WINT_TYPE__=int"); - - DefineFloatMacros(Buf, "FLT", &TI.getFloatFormat()); - DefineFloatMacros(Buf, "DBL", &TI.getDoubleFormat()); - DefineFloatMacros(Buf, "LDBL", &TI.getLongDoubleFormat()); - - // Define a __POINTER_WIDTH__ macro for stdint.h. - sprintf(MacroBuf, "__POINTER_WIDTH__=%d", (int)TI.getPointerWidth(0)); - DefineBuiltinMacro(Buf, MacroBuf); - - if (!TI.isCharSigned()) - DefineBuiltinMacro(Buf, "__CHAR_UNSIGNED__"); - - // Define fixed-sized integer types for stdint.h - assert(TI.getCharWidth() == 8 && "unsupported target types"); - assert(TI.getShortWidth() == 16 && "unsupported target types"); - DefineBuiltinMacro(Buf, "__INT8_TYPE__=char"); - DefineBuiltinMacro(Buf, "__INT16_TYPE__=short"); - - if (TI.getIntWidth() == 32) - DefineBuiltinMacro(Buf, "__INT32_TYPE__=int"); - else { - assert(TI.getLongLongWidth() == 32 && "unsupported target types"); - DefineBuiltinMacro(Buf, "__INT32_TYPE__=long long"); - } - - // 16-bit targets doesn't necessarily have a 64-bit type. - if (TI.getLongLongWidth() == 64) - DefineBuiltinMacro(Buf, "__INT64_TYPE__=long long"); - - // Add __builtin_va_list typedef. - { - const char *VAList = TI.getVAListDeclaration(); - Buf.insert(Buf.end(), VAList, VAList+strlen(VAList)); - Buf.push_back('\n'); - } - - if (const char *Prefix = TI.getUserLabelPrefix()) { - sprintf(MacroBuf, "__USER_LABEL_PREFIX__=%s", Prefix); - DefineBuiltinMacro(Buf, MacroBuf); - } - - // Build configuration options. FIXME: these should be controlled by - // command line options or something. - DefineBuiltinMacro(Buf, "__FINITE_MATH_ONLY__=0"); - - if (PP.getLangOptions().Static) - DefineBuiltinMacro(Buf, "__STATIC__=1"); - else - DefineBuiltinMacro(Buf, "__DYNAMIC__=1"); - - if (PP.getLangOptions().GNUInline) - DefineBuiltinMacro(Buf, "__GNUC_GNU_INLINE__=1"); - else - DefineBuiltinMacro(Buf, "__GNUC_STDC_INLINE__=1"); - - if (PP.getLangOptions().NoInline) - DefineBuiltinMacro(Buf, "__NO_INLINE__=1"); - - if (unsigned PICLevel = PP.getLangOptions().PICLevel) { - sprintf(MacroBuf, "__PIC__=%d", PICLevel); - DefineBuiltinMacro(Buf, MacroBuf); - - sprintf(MacroBuf, "__pic__=%d", PICLevel); - DefineBuiltinMacro(Buf, MacroBuf); - } - - // Macros to control C99 numerics and <float.h> - DefineBuiltinMacro(Buf, "__FLT_EVAL_METHOD__=0"); - DefineBuiltinMacro(Buf, "__FLT_RADIX__=2"); - sprintf(MacroBuf, "__DECIMAL_DIG__=%d", - PickFP(&TI.getLongDoubleFormat(), -1/*FIXME*/, 17, 21, 33)); - DefineBuiltinMacro(Buf, MacroBuf); - - // Get other target #defines. - TI.getTargetDefines(PP.getLangOptions(), Buf); -} - /// EnterMainSourceFile - Enter the specified FileID as the main source file, /// which implicitly adds the builtin defines etc. @@ -692,21 +370,9 @@ void Preprocessor::EnterMainSourceFile() { std::vector<char> PrologFile; PrologFile.reserve(4080); - // Install things like __POWERPC__, __GNUC__, etc into the macro table. - InitializePredefinedMacros(*this, PrologFile); - - // Add on the predefines from the driver. Wrap in a #line directive to report - // that they come from the command line. - const char *LineDirective = "# 1 \"<command line>\" 1\n"; - PrologFile.insert(PrologFile.end(), - LineDirective, LineDirective+strlen(LineDirective)); - + // FIXME: Don't make a copy. PrologFile.insert(PrologFile.end(), Predefines.begin(), Predefines.end()); - LineDirective = "# 2 \"<built-in>\" 2\n"; - PrologFile.insert(PrologFile.end(), - LineDirective, LineDirective+strlen(LineDirective)); - // Memory buffer must end with a null byte! PrologFile.push_back(0); |