| //===--- InitPreprocessor.cpp - PP initialization code. ---------*- C++ -*-===// |
| // |
| // The LLVM Compiler Infrastructure |
| // |
| // This file is distributed under the University of Illinois Open Source |
| // License. See LICENSE.TXT for details. |
| // |
| //===----------------------------------------------------------------------===// |
| // |
| // This file implements the clang::InitializePreprocessor function. |
| // |
| //===----------------------------------------------------------------------===// |
| |
| #include "clang/Basic/FileManager.h" |
| #include "clang/Basic/MacroBuilder.h" |
| #include "clang/Basic/SourceManager.h" |
| #include "clang/Basic/TargetInfo.h" |
| #include "clang/Basic/Version.h" |
| #include "clang/Frontend/FrontendDiagnostic.h" |
| #include "clang/Frontend/FrontendOptions.h" |
| #include "clang/Frontend/Utils.h" |
| #include "clang/Lex/HeaderSearch.h" |
| #include "clang/Lex/PTHManager.h" |
| #include "clang/Lex/Preprocessor.h" |
| #include "clang/Lex/PreprocessorOptions.h" |
| #include "clang/Serialization/ASTReader.h" |
| #include "llvm/ADT/APFloat.h" |
| using namespace clang; |
| |
| static bool MacroBodyEndsInBackslash(StringRef MacroBody) { |
| while (!MacroBody.empty() && isWhitespace(MacroBody.back())) |
| MacroBody = MacroBody.drop_back(); |
| return !MacroBody.empty() && MacroBody.back() == '\\'; |
| } |
| |
| // 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(MacroBuilder &Builder, StringRef Macro, |
| DiagnosticsEngine &Diags) { |
| std::pair<StringRef, StringRef> MacroPair = Macro.split('='); |
| StringRef MacroName = MacroPair.first; |
| StringRef MacroBody = MacroPair.second; |
| if (MacroName.size() != Macro.size()) { |
| // Per GCC -D semantics, the macro ends at \n if it exists. |
| StringRef::size_type End = MacroBody.find_first_of("\n\r"); |
| if (End != StringRef::npos) |
| Diags.Report(diag::warn_fe_macro_contains_embedded_newline) |
| << MacroName; |
| MacroBody = MacroBody.substr(0, End); |
| // We handle macro bodies which end in a backslash by appending an extra |
| // backslash+newline. This makes sure we don't accidentally treat the |
| // backslash as a line continuation marker. |
| if (MacroBodyEndsInBackslash(MacroBody)) |
| Builder.defineMacro(MacroName, Twine(MacroBody) + "\\\n"); |
| else |
| Builder.defineMacro(MacroName, MacroBody); |
| } else { |
| // Push "macroname 1". |
| Builder.defineMacro(Macro); |
| } |
| } |
| |
| /// AddImplicitInclude - Add an implicit \#include of the specified file to the |
| /// predefines buffer. |
| /// As these includes are generated by -include arguments the header search |
| /// logic is going to search relatively to the current working directory. |
| static void AddImplicitInclude(MacroBuilder &Builder, StringRef File) { |
| Builder.append(Twine("#include \"") + File + "\""); |
| } |
| |
| static void AddImplicitIncludeMacros(MacroBuilder &Builder, StringRef File) { |
| Builder.append(Twine("#__include_macros \"") + File + "\""); |
| // Marker token to stop the __include_macros fetch loop. |
| Builder.append("##"); // ##? |
| } |
| |
| /// AddImplicitIncludePTH - Add an implicit \#include using the original file |
| /// used to generate a PTH cache. |
| static void AddImplicitIncludePTH(MacroBuilder &Builder, Preprocessor &PP, |
| StringRef ImplicitIncludePTH) { |
| PTHManager *P = PP.getPTHManager(); |
| // Null check 'P' in the corner case where it couldn't be created. |
| const char *OriginalFile = P ? P->getOriginalSourceFile() : nullptr; |
| |
| if (!OriginalFile) { |
| PP.getDiagnostics().Report(diag::err_fe_pth_file_has_no_source_header) |
| << ImplicitIncludePTH; |
| return; |
| } |
| |
| AddImplicitInclude(Builder, OriginalFile); |
| } |
| |
| /// \brief Add an implicit \#include using the original file used to generate |
| /// a PCH file. |
| static void AddImplicitIncludePCH(MacroBuilder &Builder, Preprocessor &PP, |
| const PCHContainerReader &PCHContainerRdr, |
| StringRef ImplicitIncludePCH) { |
| std::string OriginalFile = |
| ASTReader::getOriginalSourceFile(ImplicitIncludePCH, PP.getFileManager(), |
| PCHContainerRdr, PP.getDiagnostics()); |
| if (OriginalFile.empty()) |
| return; |
| |
| AddImplicitInclude(Builder, OriginalFile); |
| } |
| |
| /// 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, |
| T IEEEQuadVal) { |
| if (Sem == (const llvm::fltSemantics*)&llvm::APFloat::IEEEsingle()) |
| return IEEESingleVal; |
| if (Sem == (const llvm::fltSemantics*)&llvm::APFloat::IEEEdouble()) |
| return IEEEDoubleVal; |
| if (Sem == (const llvm::fltSemantics*)&llvm::APFloat::x87DoubleExtended()) |
| return X87DoubleExtendedVal; |
| if (Sem == (const llvm::fltSemantics*)&llvm::APFloat::PPCDoubleDouble()) |
| return PPCDoubleDoubleVal; |
| assert(Sem == (const llvm::fltSemantics*)&llvm::APFloat::IEEEquad()); |
| return IEEEQuadVal; |
| } |
| |
| static void DefineFloatMacros(MacroBuilder &Builder, StringRef Prefix, |
| const llvm::fltSemantics *Sem, StringRef Ext) { |
| const char *DenormMin, *Epsilon, *Max, *Min; |
| DenormMin = PickFP(Sem, "1.40129846e-45", "4.9406564584124654e-324", |
| "3.64519953188247460253e-4951", |
| "4.94065645841246544176568792868221e-324", |
| "6.47517511943802511092443895822764655e-4966"); |
| int Digits = PickFP(Sem, 6, 15, 18, 31, 33); |
| int DecimalDigits = PickFP(Sem, 9, 17, 21, 33, 36); |
| Epsilon = PickFP(Sem, "1.19209290e-7", "2.2204460492503131e-16", |
| "1.08420217248550443401e-19", |
| "4.94065645841246544176568792868221e-324", |
| "1.92592994438723585305597794258492732e-34"); |
| int MantissaDigits = PickFP(Sem, 24, 53, 64, 106, 113); |
| int Min10Exp = PickFP(Sem, -37, -307, -4931, -291, -4931); |
| int Max10Exp = PickFP(Sem, 38, 308, 4932, 308, 4932); |
| int MinExp = PickFP(Sem, -125, -1021, -16381, -968, -16381); |
| int MaxExp = PickFP(Sem, 128, 1024, 16384, 1024, 16384); |
| Min = PickFP(Sem, "1.17549435e-38", "2.2250738585072014e-308", |
| "3.36210314311209350626e-4932", |
| "2.00416836000897277799610805135016e-292", |
| "3.36210314311209350626267781732175260e-4932"); |
| Max = PickFP(Sem, "3.40282347e+38", "1.7976931348623157e+308", |
| "1.18973149535723176502e+4932", |
| "1.79769313486231580793728971405301e+308", |
| "1.18973149535723176508575932662800702e+4932"); |
| |
| SmallString<32> DefPrefix; |
| DefPrefix = "__"; |
| DefPrefix += Prefix; |
| DefPrefix += "_"; |
| |
| Builder.defineMacro(DefPrefix + "DENORM_MIN__", Twine(DenormMin)+Ext); |
| Builder.defineMacro(DefPrefix + "HAS_DENORM__"); |
| Builder.defineMacro(DefPrefix + "DIG__", Twine(Digits)); |
| Builder.defineMacro(DefPrefix + "DECIMAL_DIG__", Twine(DecimalDigits)); |
| Builder.defineMacro(DefPrefix + "EPSILON__", Twine(Epsilon)+Ext); |
| Builder.defineMacro(DefPrefix + "HAS_INFINITY__"); |
| Builder.defineMacro(DefPrefix + "HAS_QUIET_NAN__"); |
| Builder.defineMacro(DefPrefix + "MANT_DIG__", Twine(MantissaDigits)); |
| |
| Builder.defineMacro(DefPrefix + "MAX_10_EXP__", Twine(Max10Exp)); |
| Builder.defineMacro(DefPrefix + "MAX_EXP__", Twine(MaxExp)); |
| Builder.defineMacro(DefPrefix + "MAX__", Twine(Max)+Ext); |
| |
| Builder.defineMacro(DefPrefix + "MIN_10_EXP__","("+Twine(Min10Exp)+")"); |
| Builder.defineMacro(DefPrefix + "MIN_EXP__", "("+Twine(MinExp)+")"); |
| Builder.defineMacro(DefPrefix + "MIN__", Twine(Min)+Ext); |
| } |
| |
| |
| /// 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 Twine &MacroName, unsigned TypeWidth, |
| StringRef ValSuffix, bool isSigned, |
| MacroBuilder &Builder) { |
| llvm::APInt MaxVal = isSigned ? llvm::APInt::getSignedMaxValue(TypeWidth) |
| : llvm::APInt::getMaxValue(TypeWidth); |
| Builder.defineMacro(MacroName, MaxVal.toString(10, isSigned) + ValSuffix); |
| } |
| |
| /// DefineTypeSize - An overloaded helper that uses TargetInfo to determine |
| /// the width, suffix, and signedness of the given type |
| static void DefineTypeSize(const Twine &MacroName, TargetInfo::IntType Ty, |
| const TargetInfo &TI, MacroBuilder &Builder) { |
| DefineTypeSize(MacroName, TI.getTypeWidth(Ty), TI.getTypeConstantSuffix(Ty), |
| TI.isTypeSigned(Ty), Builder); |
| } |
| |
| static void DefineFmt(const Twine &Prefix, TargetInfo::IntType Ty, |
| const TargetInfo &TI, MacroBuilder &Builder) { |
| bool IsSigned = TI.isTypeSigned(Ty); |
| StringRef FmtModifier = TI.getTypeFormatModifier(Ty); |
| for (const char *Fmt = IsSigned ? "di" : "ouxX"; *Fmt; ++Fmt) { |
| Builder.defineMacro(Prefix + "_FMT" + Twine(*Fmt) + "__", |
| Twine("\"") + FmtModifier + Twine(*Fmt) + "\""); |
| } |
| } |
| |
| static void DefineType(const Twine &MacroName, TargetInfo::IntType Ty, |
| MacroBuilder &Builder) { |
| Builder.defineMacro(MacroName, TargetInfo::getTypeName(Ty)); |
| } |
| |
| static void DefineTypeWidth(StringRef MacroName, TargetInfo::IntType Ty, |
| const TargetInfo &TI, MacroBuilder &Builder) { |
| Builder.defineMacro(MacroName, Twine(TI.getTypeWidth(Ty))); |
| } |
| |
| static void DefineTypeSizeof(StringRef MacroName, unsigned BitWidth, |
| const TargetInfo &TI, MacroBuilder &Builder) { |
| Builder.defineMacro(MacroName, |
| Twine(BitWidth / TI.getCharWidth())); |
| } |
| |
| static void DefineExactWidthIntType(TargetInfo::IntType Ty, |
| const TargetInfo &TI, |
| MacroBuilder &Builder) { |
| int TypeWidth = TI.getTypeWidth(Ty); |
| bool IsSigned = TI.isTypeSigned(Ty); |
| |
| // Use the target specified int64 type, when appropriate, so that [u]int64_t |
| // ends up being defined in terms of the correct type. |
| if (TypeWidth == 64) |
| Ty = IsSigned ? TI.getInt64Type() : TI.getUInt64Type(); |
| |
| const char *Prefix = IsSigned ? "__INT" : "__UINT"; |
| |
| DefineType(Prefix + Twine(TypeWidth) + "_TYPE__", Ty, Builder); |
| DefineFmt(Prefix + Twine(TypeWidth), Ty, TI, Builder); |
| |
| StringRef ConstSuffix(TI.getTypeConstantSuffix(Ty)); |
| Builder.defineMacro(Prefix + Twine(TypeWidth) + "_C_SUFFIX__", ConstSuffix); |
| } |
| |
| static void DefineExactWidthIntTypeSize(TargetInfo::IntType Ty, |
| const TargetInfo &TI, |
| MacroBuilder &Builder) { |
| int TypeWidth = TI.getTypeWidth(Ty); |
| bool IsSigned = TI.isTypeSigned(Ty); |
| |
| // Use the target specified int64 type, when appropriate, so that [u]int64_t |
| // ends up being defined in terms of the correct type. |
| if (TypeWidth == 64) |
| Ty = IsSigned ? TI.getInt64Type() : TI.getUInt64Type(); |
| |
| const char *Prefix = IsSigned ? "__INT" : "__UINT"; |
| DefineTypeSize(Prefix + Twine(TypeWidth) + "_MAX__", Ty, TI, Builder); |
| } |
| |
| static void DefineLeastWidthIntType(unsigned TypeWidth, bool IsSigned, |
| const TargetInfo &TI, |
| MacroBuilder &Builder) { |
| TargetInfo::IntType Ty = TI.getLeastIntTypeByWidth(TypeWidth, IsSigned); |
| if (Ty == TargetInfo::NoInt) |
| return; |
| |
| const char *Prefix = IsSigned ? "__INT_LEAST" : "__UINT_LEAST"; |
| DefineType(Prefix + Twine(TypeWidth) + "_TYPE__", Ty, Builder); |
| DefineTypeSize(Prefix + Twine(TypeWidth) + "_MAX__", Ty, TI, Builder); |
| DefineFmt(Prefix + Twine(TypeWidth), Ty, TI, Builder); |
| } |
| |
| static void DefineFastIntType(unsigned TypeWidth, bool IsSigned, |
| const TargetInfo &TI, MacroBuilder &Builder) { |
| // stdint.h currently defines the fast int types as equivalent to the least |
| // types. |
| TargetInfo::IntType Ty = TI.getLeastIntTypeByWidth(TypeWidth, IsSigned); |
| if (Ty == TargetInfo::NoInt) |
| return; |
| |
| const char *Prefix = IsSigned ? "__INT_FAST" : "__UINT_FAST"; |
| DefineType(Prefix + Twine(TypeWidth) + "_TYPE__", Ty, Builder); |
| DefineTypeSize(Prefix + Twine(TypeWidth) + "_MAX__", Ty, TI, Builder); |
| |
| DefineFmt(Prefix + Twine(TypeWidth), Ty, TI, Builder); |
| } |
| |
| |
| /// Get the value the ATOMIC_*_LOCK_FREE macro should have for a type with |
| /// the specified properties. |
| static const char *getLockFreeValue(unsigned TypeWidth, unsigned TypeAlign, |
| unsigned InlineWidth) { |
| // Fully-aligned, power-of-2 sizes no larger than the inline |
| // width will be inlined as lock-free operations. |
| if (TypeWidth == TypeAlign && (TypeWidth & (TypeWidth - 1)) == 0 && |
| TypeWidth <= InlineWidth) |
| return "2"; // "always lock free" |
| // We cannot be certain what operations the lib calls might be |
| // able to implement as lock-free on future processors. |
| return "1"; // "sometimes lock free" |
| } |
| |
| /// \brief Add definitions required for a smooth interaction between |
| /// Objective-C++ automated reference counting and libstdc++ (4.2). |
| static void AddObjCXXARCLibstdcxxDefines(const LangOptions &LangOpts, |
| MacroBuilder &Builder) { |
| Builder.defineMacro("_GLIBCXX_PREDEFINED_OBJC_ARC_IS_SCALAR"); |
| |
| std::string Result; |
| { |
| // Provide specializations for the __is_scalar type trait so that |
| // lifetime-qualified objects are not considered "scalar" types, which |
| // libstdc++ uses as an indicator of the presence of trivial copy, assign, |
| // default-construct, and destruct semantics (none of which hold for |
| // lifetime-qualified objects in ARC). |
| llvm::raw_string_ostream Out(Result); |
| |
| Out << "namespace std {\n" |
| << "\n" |
| << "struct __true_type;\n" |
| << "struct __false_type;\n" |
| << "\n"; |
| |
| Out << "template<typename _Tp> struct __is_scalar;\n" |
| << "\n"; |
| |
| if (LangOpts.ObjCAutoRefCount) { |
| Out << "template<typename _Tp>\n" |
| << "struct __is_scalar<__attribute__((objc_ownership(strong))) _Tp> {\n" |
| << " enum { __value = 0 };\n" |
| << " typedef __false_type __type;\n" |
| << "};\n" |
| << "\n"; |
| } |
| |
| if (LangOpts.ObjCWeak) { |
| Out << "template<typename _Tp>\n" |
| << "struct __is_scalar<__attribute__((objc_ownership(weak))) _Tp> {\n" |
| << " enum { __value = 0 };\n" |
| << " typedef __false_type __type;\n" |
| << "};\n" |
| << "\n"; |
| } |
| |
| if (LangOpts.ObjCAutoRefCount) { |
| Out << "template<typename _Tp>\n" |
| << "struct __is_scalar<__attribute__((objc_ownership(autoreleasing)))" |
| << " _Tp> {\n" |
| << " enum { __value = 0 };\n" |
| << " typedef __false_type __type;\n" |
| << "};\n" |
| << "\n"; |
| } |
| |
| Out << "}\n"; |
| } |
| Builder.append(Result); |
| } |
| |
| static void InitializeStandardPredefinedMacros(const TargetInfo &TI, |
| const LangOptions &LangOpts, |
| const FrontendOptions &FEOpts, |
| MacroBuilder &Builder) { |
| if (!LangOpts.MSVCCompat && !LangOpts.TraditionalCPP) |
| Builder.defineMacro("__STDC__"); |
| if (LangOpts.Freestanding) |
| Builder.defineMacro("__STDC_HOSTED__", "0"); |
| else |
| Builder.defineMacro("__STDC_HOSTED__"); |
| |
| if (!LangOpts.CPlusPlus) { |
| if (LangOpts.C11) |
| Builder.defineMacro("__STDC_VERSION__", "201112L"); |
| else if (LangOpts.C99) |
| Builder.defineMacro("__STDC_VERSION__", "199901L"); |
| else if (!LangOpts.GNUMode && LangOpts.Digraphs) |
| Builder.defineMacro("__STDC_VERSION__", "199409L"); |
| } else { |
| // FIXME: Use correct value for C++17. |
| if (LangOpts.CPlusPlus1z) |
| Builder.defineMacro("__cplusplus", "201406L"); |
| // C++1y [cpp.predefined]p1: |
| // The name __cplusplus is defined to the value 201402L when compiling a |
| // C++ translation unit. |
| else if (LangOpts.CPlusPlus14) |
| Builder.defineMacro("__cplusplus", "201402L"); |
| // C++11 [cpp.predefined]p1: |
| // The name __cplusplus is defined to the value 201103L when compiling a |
| // C++ translation unit. |
| else if (LangOpts.CPlusPlus11) |
| Builder.defineMacro("__cplusplus", "201103L"); |
| // C++03 [cpp.predefined]p1: |
| // The name __cplusplus is defined to the value 199711L when compiling a |
| // C++ translation unit. |
| else |
| Builder.defineMacro("__cplusplus", "199711L"); |
| |
| // C++1z [cpp.predefined]p1: |
| // An integer literal of type std::size_t whose value is the alignment |
| // guaranteed by a call to operator new(std::size_t) |
| // |
| // We provide this in all language modes, since it seems generally useful. |
| Builder.defineMacro("__STDCPP_DEFAULT_NEW_ALIGNMENT__", |
| Twine(TI.getNewAlign() / TI.getCharWidth()) + |
| TI.getTypeConstantSuffix(TI.getSizeType())); |
| } |
| |
| // In C11 these are environment macros. In C++11 they are only defined |
| // as part of <cuchar>. To prevent breakage when mixing C and C++ |
| // code, define these macros unconditionally. We can define them |
| // unconditionally, as Clang always uses UTF-16 and UTF-32 for 16-bit |
| // and 32-bit character literals. |
| Builder.defineMacro("__STDC_UTF_16__", "1"); |
| Builder.defineMacro("__STDC_UTF_32__", "1"); |
| |
| if (LangOpts.ObjC1) |
| Builder.defineMacro("__OBJC__"); |
| |
| // OpenCL v1.0/1.1 s6.9, v1.2/2.0 s6.10: Preprocessor Directives and Macros. |
| if (LangOpts.OpenCL) { |
| // OpenCL v1.0 and v1.1 do not have a predefined macro to indicate the |
| // language standard with which the program is compiled. __OPENCL_VERSION__ |
| // is for the OpenCL version supported by the OpenCL device, which is not |
| // necessarily the language standard with which the program is compiled. |
| // A shared OpenCL header file requires a macro to indicate the language |
| // standard. As a workaround, __OPENCL_C_VERSION__ is defined for |
| // OpenCL v1.0 and v1.1. |
| switch (LangOpts.OpenCLVersion) { |
| case 100: |
| Builder.defineMacro("__OPENCL_C_VERSION__", "100"); |
| break; |
| case 110: |
| Builder.defineMacro("__OPENCL_C_VERSION__", "110"); |
| break; |
| case 120: |
| Builder.defineMacro("__OPENCL_C_VERSION__", "120"); |
| break; |
| case 200: |
| Builder.defineMacro("__OPENCL_C_VERSION__", "200"); |
| break; |
| default: |
| llvm_unreachable("Unsupported OpenCL version"); |
| } |
| Builder.defineMacro("CL_VERSION_1_0", "100"); |
| Builder.defineMacro("CL_VERSION_1_1", "110"); |
| Builder.defineMacro("CL_VERSION_1_2", "120"); |
| Builder.defineMacro("CL_VERSION_2_0", "200"); |
| |
| if (TI.isLittleEndian()) |
| Builder.defineMacro("__ENDIAN_LITTLE__"); |
| |
| if (LangOpts.FastRelaxedMath) |
| Builder.defineMacro("__FAST_RELAXED_MATH__"); |
| } |
| // Not "standard" per se, but available even with the -undef flag. |
| if (LangOpts.AsmPreprocessor) |
| Builder.defineMacro("__ASSEMBLER__"); |
| if (LangOpts.CUDA) |
| Builder.defineMacro("__CUDA__"); |
| } |
| |
| /// Initialize the predefined C++ language feature test macros defined in |
| /// ISO/IEC JTC1/SC22/WG21 (C++) SD-6: "SG10 Feature Test Recommendations". |
| static void InitializeCPlusPlusFeatureTestMacros(const LangOptions &LangOpts, |
| MacroBuilder &Builder) { |
| // C++98 features. |
| if (LangOpts.RTTI) |
| Builder.defineMacro("__cpp_rtti", "199711"); |
| if (LangOpts.CXXExceptions) |
| Builder.defineMacro("__cpp_exceptions", "199711"); |
| |
| // C++11 features. |
| if (LangOpts.CPlusPlus11) { |
| Builder.defineMacro("__cpp_unicode_characters", "200704"); |
| Builder.defineMacro("__cpp_raw_strings", "200710"); |
| Builder.defineMacro("__cpp_unicode_literals", "200710"); |
| Builder.defineMacro("__cpp_user_defined_literals", "200809"); |
| Builder.defineMacro("__cpp_lambdas", "200907"); |
| Builder.defineMacro("__cpp_constexpr", |
| LangOpts.CPlusPlus14 ? "201304" : "200704"); |
| Builder.defineMacro("__cpp_range_based_for", |
| LangOpts.CPlusPlus1z ? "201603" : "200907"); |
| Builder.defineMacro("__cpp_static_assert", |
| LangOpts.CPlusPlus1z ? "201411" : "200410"); |
| Builder.defineMacro("__cpp_decltype", "200707"); |
| Builder.defineMacro("__cpp_attributes", "200809"); |
| Builder.defineMacro("__cpp_rvalue_references", "200610"); |
| Builder.defineMacro("__cpp_variadic_templates", "200704"); |
| Builder.defineMacro("__cpp_initializer_lists", "200806"); |
| Builder.defineMacro("__cpp_delegating_constructors", "200604"); |
| Builder.defineMacro("__cpp_nsdmi", "200809"); |
| Builder.defineMacro("__cpp_inheriting_constructors", "201511"); |
| Builder.defineMacro("__cpp_ref_qualifiers", "200710"); |
| Builder.defineMacro("__cpp_alias_templates", "200704"); |
| } |
| |
| // C++14 features. |
| if (LangOpts.CPlusPlus14) { |
| Builder.defineMacro("__cpp_binary_literals", "201304"); |
| Builder.defineMacro("__cpp_digit_separators", "201309"); |
| Builder.defineMacro("__cpp_init_captures", "201304"); |
| Builder.defineMacro("__cpp_generic_lambdas", "201304"); |
| Builder.defineMacro("__cpp_decltype_auto", "201304"); |
| Builder.defineMacro("__cpp_return_type_deduction", "201304"); |
| Builder.defineMacro("__cpp_aggregate_nsdmi", "201304"); |
| Builder.defineMacro("__cpp_variable_templates", "201304"); |
| } |
| if (LangOpts.SizedDeallocation) |
| Builder.defineMacro("__cpp_sized_deallocation", "201309"); |
| |
| // C++17 features. |
| if (LangOpts.CPlusPlus1z) { |
| Builder.defineMacro("__cpp_hex_float", "201603"); |
| Builder.defineMacro("__cpp_inline_variables", "201606"); |
| Builder.defineMacro("__cpp_noexcept_function_type", "201510"); |
| Builder.defineMacro("__cpp_capture_star_this", "201603"); |
| Builder.defineMacro("__cpp_if_constexpr", "201606"); |
| Builder.defineMacro("__cpp_template_auto", "201606"); |
| Builder.defineMacro("__cpp_namespace_attributes", "201411"); |
| Builder.defineMacro("__cpp_enumerator_attributes", "201411"); |
| Builder.defineMacro("__cpp_nested_namespace_definitions", "201411"); |
| Builder.defineMacro("__cpp_variadic_using", "201611"); |
| Builder.defineMacro("__cpp_aggregate_bases", "201603"); |
| Builder.defineMacro("__cpp_structured_bindings", "201606"); |
| Builder.defineMacro("__cpp_nontype_template_args", "201411"); |
| Builder.defineMacro("__cpp_fold_expressions", "201603"); |
| } |
| if (LangOpts.AlignedAllocation) |
| Builder.defineMacro("__cpp_aligned_new", "201606"); |
| |
| // TS features. |
| if (LangOpts.ConceptsTS) |
| Builder.defineMacro("__cpp_experimental_concepts", "1"); |
| if (LangOpts.CoroutinesTS) |
| Builder.defineMacro("__cpp_coroutines", "1"); |
| } |
| |
| static void InitializePredefinedMacros(const TargetInfo &TI, |
| const LangOptions &LangOpts, |
| const FrontendOptions &FEOpts, |
| MacroBuilder &Builder) { |
| // Compiler version introspection macros. |
| Builder.defineMacro("__llvm__"); // LLVM Backend |
| Builder.defineMacro("__clang__"); // Clang Frontend |
| #define TOSTR2(X) #X |
| #define TOSTR(X) TOSTR2(X) |
| Builder.defineMacro("__clang_major__", TOSTR(CLANG_VERSION_MAJOR)); |
| Builder.defineMacro("__clang_minor__", TOSTR(CLANG_VERSION_MINOR)); |
| Builder.defineMacro("__clang_patchlevel__", TOSTR(CLANG_VERSION_PATCHLEVEL)); |
| #undef TOSTR |
| #undef TOSTR2 |
| Builder.defineMacro("__clang_version__", |
| "\"" CLANG_VERSION_STRING " " |
| + getClangFullRepositoryVersion() + "\""); |
| if (!LangOpts.MSVCCompat) { |
| // Currently claim to be compatible with GCC 4.2.1-5621, but only if we're |
| // not compiling for MSVC compatibility |
| Builder.defineMacro("__GNUC_MINOR__", "2"); |
| Builder.defineMacro("__GNUC_PATCHLEVEL__", "1"); |
| Builder.defineMacro("__GNUC__", "4"); |
| Builder.defineMacro("__GXX_ABI_VERSION", "1002"); |
| } |
| |
| // Define macros for the C11 / C++11 memory orderings |
| Builder.defineMacro("__ATOMIC_RELAXED", "0"); |
| Builder.defineMacro("__ATOMIC_CONSUME", "1"); |
| Builder.defineMacro("__ATOMIC_ACQUIRE", "2"); |
| Builder.defineMacro("__ATOMIC_RELEASE", "3"); |
| Builder.defineMacro("__ATOMIC_ACQ_REL", "4"); |
| Builder.defineMacro("__ATOMIC_SEQ_CST", "5"); |
| |
| // Support for #pragma redefine_extname (Sun compatibility) |
| Builder.defineMacro("__PRAGMA_REDEFINE_EXTNAME", "1"); |
| |
| // As sad as it is, enough software depends on the __VERSION__ for version |
| // checks that it is necessary to report 4.2.1 (the base GCC version we claim |
| // compatibility with) first. |
| Builder.defineMacro("__VERSION__", "\"4.2.1 Compatible " + |
| Twine(getClangFullCPPVersion()) + "\""); |
| |
| // Initialize language-specific preprocessor defines. |
| |
| // Standard conforming mode? |
| if (!LangOpts.GNUMode && !LangOpts.MSVCCompat) |
| Builder.defineMacro("__STRICT_ANSI__"); |
| |
| if (!LangOpts.MSVCCompat && LangOpts.CPlusPlus11) |
| Builder.defineMacro("__GXX_EXPERIMENTAL_CXX0X__"); |
| |
| if (LangOpts.ObjC1) { |
| if (LangOpts.ObjCRuntime.isNonFragile()) { |
| Builder.defineMacro("__OBJC2__"); |
| |
| if (LangOpts.ObjCExceptions) |
| Builder.defineMacro("OBJC_ZEROCOST_EXCEPTIONS"); |
| } |
| |
| if (LangOpts.getGC() != LangOptions::NonGC) |
| Builder.defineMacro("__OBJC_GC__"); |
| |
| if (LangOpts.ObjCRuntime.isNeXTFamily()) |
| Builder.defineMacro("__NEXT_RUNTIME__"); |
| |
| if (LangOpts.ObjCRuntime.getKind() == ObjCRuntime::ObjFW) { |
| VersionTuple tuple = LangOpts.ObjCRuntime.getVersion(); |
| |
| unsigned minor = 0; |
| if (tuple.getMinor().hasValue()) |
| minor = tuple.getMinor().getValue(); |
| |
| unsigned subminor = 0; |
| if (tuple.getSubminor().hasValue()) |
| subminor = tuple.getSubminor().getValue(); |
| |
| Builder.defineMacro("__OBJFW_RUNTIME_ABI__", |
| Twine(tuple.getMajor() * 10000 + minor * 100 + |
| subminor)); |
| } |
| |
| Builder.defineMacro("IBOutlet", "__attribute__((iboutlet))"); |
| Builder.defineMacro("IBOutletCollection(ClassName)", |
| "__attribute__((iboutletcollection(ClassName)))"); |
| Builder.defineMacro("IBAction", "void)__attribute__((ibaction)"); |
| Builder.defineMacro("IBInspectable", ""); |
| Builder.defineMacro("IB_DESIGNABLE", ""); |
| } |
| |
| // Define a macro that describes the Objective-C boolean type even for C |
| // and C++ since BOOL can be used from non Objective-C code. |
| Builder.defineMacro("__OBJC_BOOL_IS_BOOL", |
| Twine(TI.useSignedCharForObjCBool() ? "0" : "1")); |
| |
| if (LangOpts.CPlusPlus) |
| InitializeCPlusPlusFeatureTestMacros(LangOpts, Builder); |
| |
| // darwin_constant_cfstrings controls this. This is also dependent |
| // on other things like the runtime I believe. This is set even for C code. |
| if (!LangOpts.NoConstantCFStrings) |
| Builder.defineMacro("__CONSTANT_CFSTRINGS__"); |
| |
| if (LangOpts.ObjC2) |
| Builder.defineMacro("OBJC_NEW_PROPERTIES"); |
| |
| if (LangOpts.PascalStrings) |
| Builder.defineMacro("__PASCAL_STRINGS__"); |
| |
| if (LangOpts.Blocks) { |
| Builder.defineMacro("__block", "__attribute__((__blocks__(byref)))"); |
| Builder.defineMacro("__BLOCKS__"); |
| } |
| |
| if (!LangOpts.MSVCCompat && LangOpts.Exceptions) |
| Builder.defineMacro("__EXCEPTIONS"); |
| if (!LangOpts.MSVCCompat && LangOpts.RTTI) |
| Builder.defineMacro("__GXX_RTTI"); |
| if (LangOpts.SjLjExceptions) |
| Builder.defineMacro("__USING_SJLJ_EXCEPTIONS__"); |
| |
| if (LangOpts.Deprecated) |
| Builder.defineMacro("__DEPRECATED"); |
| |
| if (!LangOpts.MSVCCompat && LangOpts.CPlusPlus) { |
| Builder.defineMacro("__GNUG__", "4"); |
| Builder.defineMacro("__GXX_WEAK__"); |
| Builder.defineMacro("__private_extern__", "extern"); |
| } |
| |
| if (LangOpts.MicrosoftExt) { |
| if (LangOpts.WChar) { |
| // wchar_t supported as a keyword. |
| Builder.defineMacro("_WCHAR_T_DEFINED"); |
| Builder.defineMacro("_NATIVE_WCHAR_T_DEFINED"); |
| } |
| } |
| |
| if (LangOpts.Optimize) |
| Builder.defineMacro("__OPTIMIZE__"); |
| if (LangOpts.OptimizeSize) |
| Builder.defineMacro("__OPTIMIZE_SIZE__"); |
| |
| if (LangOpts.FastMath) |
| Builder.defineMacro("__FAST_MATH__"); |
| |
| // Initialize target-specific preprocessor defines. |
| |
| // __BYTE_ORDER__ was added in GCC 4.6. It's analogous |
| // to the macro __BYTE_ORDER (no trailing underscores) |
| // from glibc's <endian.h> header. |
| // We don't support the PDP-11 as a target, but include |
| // the define so it can still be compared against. |
| Builder.defineMacro("__ORDER_LITTLE_ENDIAN__", "1234"); |
| Builder.defineMacro("__ORDER_BIG_ENDIAN__", "4321"); |
| Builder.defineMacro("__ORDER_PDP_ENDIAN__", "3412"); |
| if (TI.isBigEndian()) { |
| Builder.defineMacro("__BYTE_ORDER__", "__ORDER_BIG_ENDIAN__"); |
| Builder.defineMacro("__BIG_ENDIAN__"); |
| } else { |
| Builder.defineMacro("__BYTE_ORDER__", "__ORDER_LITTLE_ENDIAN__"); |
| Builder.defineMacro("__LITTLE_ENDIAN__"); |
| } |
| |
| if (TI.getPointerWidth(0) == 64 && TI.getLongWidth() == 64 |
| && TI.getIntWidth() == 32) { |
| Builder.defineMacro("_LP64"); |
| Builder.defineMacro("__LP64__"); |
| } |
| |
| if (TI.getPointerWidth(0) == 32 && TI.getLongWidth() == 32 |
| && TI.getIntWidth() == 32) { |
| Builder.defineMacro("_ILP32"); |
| Builder.defineMacro("__ILP32__"); |
| } |
| |
| // Define type sizing macros based on the target properties. |
| assert(TI.getCharWidth() == 8 && "Only support 8-bit char so far"); |
| Builder.defineMacro("__CHAR_BIT__", Twine(TI.getCharWidth())); |
| |
| DefineTypeSize("__SCHAR_MAX__", TargetInfo::SignedChar, TI, Builder); |
| DefineTypeSize("__SHRT_MAX__", TargetInfo::SignedShort, TI, Builder); |
| DefineTypeSize("__INT_MAX__", TargetInfo::SignedInt, TI, Builder); |
| DefineTypeSize("__LONG_MAX__", TargetInfo::SignedLong, TI, Builder); |
| DefineTypeSize("__LONG_LONG_MAX__", TargetInfo::SignedLongLong, TI, Builder); |
| DefineTypeSize("__WCHAR_MAX__", TI.getWCharType(), TI, Builder); |
| DefineTypeSize("__INTMAX_MAX__", TI.getIntMaxType(), TI, Builder); |
| DefineTypeSize("__SIZE_MAX__", TI.getSizeType(), TI, Builder); |
| |
| DefineTypeSize("__UINTMAX_MAX__", TI.getUIntMaxType(), TI, Builder); |
| DefineTypeSize("__PTRDIFF_MAX__", TI.getPtrDiffType(0), TI, Builder); |
| DefineTypeSize("__INTPTR_MAX__", TI.getIntPtrType(), TI, Builder); |
| DefineTypeSize("__UINTPTR_MAX__", TI.getUIntPtrType(), TI, Builder); |
| |
| DefineTypeSizeof("__SIZEOF_DOUBLE__", TI.getDoubleWidth(), TI, Builder); |
| DefineTypeSizeof("__SIZEOF_FLOAT__", TI.getFloatWidth(), TI, Builder); |
| DefineTypeSizeof("__SIZEOF_INT__", TI.getIntWidth(), TI, Builder); |
| DefineTypeSizeof("__SIZEOF_LONG__", TI.getLongWidth(), TI, Builder); |
| DefineTypeSizeof("__SIZEOF_LONG_DOUBLE__",TI.getLongDoubleWidth(),TI,Builder); |
| DefineTypeSizeof("__SIZEOF_LONG_LONG__", TI.getLongLongWidth(), TI, Builder); |
| DefineTypeSizeof("__SIZEOF_POINTER__", TI.getPointerWidth(0), TI, Builder); |
| DefineTypeSizeof("__SIZEOF_SHORT__", TI.getShortWidth(), TI, Builder); |
| DefineTypeSizeof("__SIZEOF_PTRDIFF_T__", |
| TI.getTypeWidth(TI.getPtrDiffType(0)), TI, Builder); |
| DefineTypeSizeof("__SIZEOF_SIZE_T__", |
| TI.getTypeWidth(TI.getSizeType()), TI, Builder); |
| DefineTypeSizeof("__SIZEOF_WCHAR_T__", |
| TI.getTypeWidth(TI.getWCharType()), TI, Builder); |
| DefineTypeSizeof("__SIZEOF_WINT_T__", |
| TI.getTypeWidth(TI.getWIntType()), TI, Builder); |
| if (TI.hasInt128Type()) |
| DefineTypeSizeof("__SIZEOF_INT128__", 128, TI, Builder); |
| |
| DefineType("__INTMAX_TYPE__", TI.getIntMaxType(), Builder); |
| DefineFmt("__INTMAX", TI.getIntMaxType(), TI, Builder); |
| Builder.defineMacro("__INTMAX_C_SUFFIX__", |
| TI.getTypeConstantSuffix(TI.getIntMaxType())); |
| DefineType("__UINTMAX_TYPE__", TI.getUIntMaxType(), Builder); |
| DefineFmt("__UINTMAX", TI.getUIntMaxType(), TI, Builder); |
| Builder.defineMacro("__UINTMAX_C_SUFFIX__", |
| TI.getTypeConstantSuffix(TI.getUIntMaxType())); |
| DefineTypeWidth("__INTMAX_WIDTH__", TI.getIntMaxType(), TI, Builder); |
| DefineType("__PTRDIFF_TYPE__", TI.getPtrDiffType(0), Builder); |
| DefineFmt("__PTRDIFF", TI.getPtrDiffType(0), TI, Builder); |
| DefineTypeWidth("__PTRDIFF_WIDTH__", TI.getPtrDiffType(0), TI, Builder); |
| DefineType("__INTPTR_TYPE__", TI.getIntPtrType(), Builder); |
| DefineFmt("__INTPTR", TI.getIntPtrType(), TI, Builder); |
| DefineTypeWidth("__INTPTR_WIDTH__", TI.getIntPtrType(), TI, Builder); |
| DefineType("__SIZE_TYPE__", TI.getSizeType(), Builder); |
| DefineFmt("__SIZE", TI.getSizeType(), TI, Builder); |
| DefineTypeWidth("__SIZE_WIDTH__", TI.getSizeType(), TI, Builder); |
| DefineType("__WCHAR_TYPE__", TI.getWCharType(), Builder); |
| DefineTypeWidth("__WCHAR_WIDTH__", TI.getWCharType(), TI, Builder); |
| DefineType("__WINT_TYPE__", TI.getWIntType(), Builder); |
| DefineTypeWidth("__WINT_WIDTH__", TI.getWIntType(), TI, Builder); |
| DefineTypeWidth("__SIG_ATOMIC_WIDTH__", TI.getSigAtomicType(), TI, Builder); |
| DefineTypeSize("__SIG_ATOMIC_MAX__", TI.getSigAtomicType(), TI, Builder); |
| DefineType("__CHAR16_TYPE__", TI.getChar16Type(), Builder); |
| DefineType("__CHAR32_TYPE__", TI.getChar32Type(), Builder); |
| |
| DefineTypeWidth("__UINTMAX_WIDTH__", TI.getUIntMaxType(), TI, Builder); |
| DefineType("__UINTPTR_TYPE__", TI.getUIntPtrType(), Builder); |
| DefineFmt("__UINTPTR", TI.getUIntPtrType(), TI, Builder); |
| DefineTypeWidth("__UINTPTR_WIDTH__", TI.getUIntPtrType(), TI, Builder); |
| |
| DefineFloatMacros(Builder, "FLT", &TI.getFloatFormat(), "F"); |
| DefineFloatMacros(Builder, "DBL", &TI.getDoubleFormat(), ""); |
| DefineFloatMacros(Builder, "LDBL", &TI.getLongDoubleFormat(), "L"); |
| |
| // Define a __POINTER_WIDTH__ macro for stdint.h. |
| Builder.defineMacro("__POINTER_WIDTH__", |
| Twine((int)TI.getPointerWidth(0))); |
| |
| // Define __BIGGEST_ALIGNMENT__ to be compatible with gcc. |
| Builder.defineMacro("__BIGGEST_ALIGNMENT__", |
| Twine(TI.getSuitableAlign() / TI.getCharWidth()) ); |
| |
| if (!LangOpts.CharIsSigned) |
| Builder.defineMacro("__CHAR_UNSIGNED__"); |
| |
| if (!TargetInfo::isTypeSigned(TI.getWCharType())) |
| Builder.defineMacro("__WCHAR_UNSIGNED__"); |
| |
| if (!TargetInfo::isTypeSigned(TI.getWIntType())) |
| Builder.defineMacro("__WINT_UNSIGNED__"); |
| |
| // Define exact-width integer types for stdint.h |
| DefineExactWidthIntType(TargetInfo::SignedChar, TI, Builder); |
| |
| if (TI.getShortWidth() > TI.getCharWidth()) |
| DefineExactWidthIntType(TargetInfo::SignedShort, TI, Builder); |
| |
| if (TI.getIntWidth() > TI.getShortWidth()) |
| DefineExactWidthIntType(TargetInfo::SignedInt, TI, Builder); |
| |
| if (TI.getLongWidth() > TI.getIntWidth()) |
| DefineExactWidthIntType(TargetInfo::SignedLong, TI, Builder); |
| |
| if (TI.getLongLongWidth() > TI.getLongWidth()) |
| DefineExactWidthIntType(TargetInfo::SignedLongLong, TI, Builder); |
| |
| DefineExactWidthIntType(TargetInfo::UnsignedChar, TI, Builder); |
| DefineExactWidthIntTypeSize(TargetInfo::UnsignedChar, TI, Builder); |
| DefineExactWidthIntTypeSize(TargetInfo::SignedChar, TI, Builder); |
| |
| if (TI.getShortWidth() > TI.getCharWidth()) { |
| DefineExactWidthIntType(TargetInfo::UnsignedShort, TI, Builder); |
| DefineExactWidthIntTypeSize(TargetInfo::UnsignedShort, TI, Builder); |
| DefineExactWidthIntTypeSize(TargetInfo::SignedShort, TI, Builder); |
| } |
| |
| if (TI.getIntWidth() > TI.getShortWidth()) { |
| DefineExactWidthIntType(TargetInfo::UnsignedInt, TI, Builder); |
| DefineExactWidthIntTypeSize(TargetInfo::UnsignedInt, TI, Builder); |
| DefineExactWidthIntTypeSize(TargetInfo::SignedInt, TI, Builder); |
| } |
| |
| if (TI.getLongWidth() > TI.getIntWidth()) { |
| DefineExactWidthIntType(TargetInfo::UnsignedLong, TI, Builder); |
| DefineExactWidthIntTypeSize(TargetInfo::UnsignedLong, TI, Builder); |
| DefineExactWidthIntTypeSize(TargetInfo::SignedLong, TI, Builder); |
| } |
| |
| if (TI.getLongLongWidth() > TI.getLongWidth()) { |
| DefineExactWidthIntType(TargetInfo::UnsignedLongLong, TI, Builder); |
| DefineExactWidthIntTypeSize(TargetInfo::UnsignedLongLong, TI, Builder); |
| DefineExactWidthIntTypeSize(TargetInfo::SignedLongLong, TI, Builder); |
| } |
| |
| DefineLeastWidthIntType(8, true, TI, Builder); |
| DefineLeastWidthIntType(8, false, TI, Builder); |
| DefineLeastWidthIntType(16, true, TI, Builder); |
| DefineLeastWidthIntType(16, false, TI, Builder); |
| DefineLeastWidthIntType(32, true, TI, Builder); |
| DefineLeastWidthIntType(32, false, TI, Builder); |
| DefineLeastWidthIntType(64, true, TI, Builder); |
| DefineLeastWidthIntType(64, false, TI, Builder); |
| |
| DefineFastIntType(8, true, TI, Builder); |
| DefineFastIntType(8, false, TI, Builder); |
| DefineFastIntType(16, true, TI, Builder); |
| DefineFastIntType(16, false, TI, Builder); |
| DefineFastIntType(32, true, TI, Builder); |
| DefineFastIntType(32, false, TI, Builder); |
| DefineFastIntType(64, true, TI, Builder); |
| DefineFastIntType(64, false, TI, Builder); |
| |
| char UserLabelPrefix[2] = {TI.getDataLayout().getGlobalPrefix(), 0}; |
| Builder.defineMacro("__USER_LABEL_PREFIX__", UserLabelPrefix); |
| |
| if (LangOpts.FastMath || LangOpts.FiniteMathOnly) |
| Builder.defineMacro("__FINITE_MATH_ONLY__", "1"); |
| else |
| Builder.defineMacro("__FINITE_MATH_ONLY__", "0"); |
| |
| if (!LangOpts.MSVCCompat) { |
| if (LangOpts.GNUInline || LangOpts.CPlusPlus) |
| Builder.defineMacro("__GNUC_GNU_INLINE__"); |
| else |
| Builder.defineMacro("__GNUC_STDC_INLINE__"); |
| |
| // The value written by __atomic_test_and_set. |
| // FIXME: This is target-dependent. |
| Builder.defineMacro("__GCC_ATOMIC_TEST_AND_SET_TRUEVAL", "1"); |
| |
| // Used by libc++ and libstdc++ to implement ATOMIC_<foo>_LOCK_FREE. |
| unsigned InlineWidthBits = TI.getMaxAtomicInlineWidth(); |
| #define DEFINE_LOCK_FREE_MACRO(TYPE, Type) \ |
| Builder.defineMacro("__GCC_ATOMIC_" #TYPE "_LOCK_FREE", \ |
| getLockFreeValue(TI.get##Type##Width(), \ |
| TI.get##Type##Align(), \ |
| InlineWidthBits)); |
| DEFINE_LOCK_FREE_MACRO(BOOL, Bool); |
| DEFINE_LOCK_FREE_MACRO(CHAR, Char); |
| DEFINE_LOCK_FREE_MACRO(CHAR16_T, Char16); |
| DEFINE_LOCK_FREE_MACRO(CHAR32_T, Char32); |
| DEFINE_LOCK_FREE_MACRO(WCHAR_T, WChar); |
| DEFINE_LOCK_FREE_MACRO(SHORT, Short); |
| DEFINE_LOCK_FREE_MACRO(INT, Int); |
| DEFINE_LOCK_FREE_MACRO(LONG, Long); |
| DEFINE_LOCK_FREE_MACRO(LLONG, LongLong); |
| Builder.defineMacro("__GCC_ATOMIC_POINTER_LOCK_FREE", |
| getLockFreeValue(TI.getPointerWidth(0), |
| TI.getPointerAlign(0), |
| InlineWidthBits)); |
| #undef DEFINE_LOCK_FREE_MACRO |
| } |
| |
| if (LangOpts.NoInlineDefine) |
| Builder.defineMacro("__NO_INLINE__"); |
| |
| if (unsigned PICLevel = LangOpts.PICLevel) { |
| Builder.defineMacro("__PIC__", Twine(PICLevel)); |
| Builder.defineMacro("__pic__", Twine(PICLevel)); |
| if (LangOpts.PIE) { |
| Builder.defineMacro("__PIE__", Twine(PICLevel)); |
| Builder.defineMacro("__pie__", Twine(PICLevel)); |
| } |
| } |
| |
| // Macros to control C99 numerics and <float.h> |
| Builder.defineMacro("__FLT_EVAL_METHOD__", Twine(TI.getFloatEvalMethod())); |
| Builder.defineMacro("__FLT_RADIX__", "2"); |
| Builder.defineMacro("__DECIMAL_DIG__", "__LDBL_DECIMAL_DIG__"); |
| |
| if (LangOpts.getStackProtector() == LangOptions::SSPOn) |
| Builder.defineMacro("__SSP__"); |
| else if (LangOpts.getStackProtector() == LangOptions::SSPStrong) |
| Builder.defineMacro("__SSP_STRONG__", "2"); |
| else if (LangOpts.getStackProtector() == LangOptions::SSPReq) |
| Builder.defineMacro("__SSP_ALL__", "3"); |
| |
| // Define a macro that exists only when using the static analyzer. |
| if (FEOpts.ProgramAction == frontend::RunAnalysis) |
| Builder.defineMacro("__clang_analyzer__"); |
| |
| if (LangOpts.FastRelaxedMath) |
| Builder.defineMacro("__FAST_RELAXED_MATH__"); |
| |
| if (FEOpts.ProgramAction == frontend::RewriteObjC || |
| LangOpts.getGC() != LangOptions::NonGC) { |
| Builder.defineMacro("__weak", "__attribute__((objc_gc(weak)))"); |
| Builder.defineMacro("__strong", "__attribute__((objc_gc(strong)))"); |
| Builder.defineMacro("__autoreleasing", ""); |
| Builder.defineMacro("__unsafe_unretained", ""); |
| } else if (LangOpts.ObjC1) { |
| Builder.defineMacro("__weak", "__attribute__((objc_ownership(weak)))"); |
| Builder.defineMacro("__strong", "__attribute__((objc_ownership(strong)))"); |
| Builder.defineMacro("__autoreleasing", |
| "__attribute__((objc_ownership(autoreleasing)))"); |
| Builder.defineMacro("__unsafe_unretained", |
| "__attribute__((objc_ownership(none)))"); |
| } |
| |
| // On Darwin, there are __double_underscored variants of the type |
| // nullability qualifiers. |
| if (TI.getTriple().isOSDarwin()) { |
| Builder.defineMacro("__nonnull", "_Nonnull"); |
| Builder.defineMacro("__null_unspecified", "_Null_unspecified"); |
| Builder.defineMacro("__nullable", "_Nullable"); |
| } |
| |
| // OpenMP definition |
| // OpenMP 2.2: |
| // In implementations that support a preprocessor, the _OPENMP |
| // macro name is defined to have the decimal value yyyymm where |
| // yyyy and mm are the year and the month designations of the |
| // version of the OpenMP API that the implementation support. |
| switch (LangOpts.OpenMP) { |
| case 0: |
| break; |
| case 40: |
| Builder.defineMacro("_OPENMP", "201307"); |
| break; |
| case 45: |
| Builder.defineMacro("_OPENMP", "201511"); |
| break; |
| default: |
| // Default version is OpenMP 3.1 |
| Builder.defineMacro("_OPENMP", "201107"); |
| break; |
| } |
| |
| // CUDA device path compilaton |
| if (LangOpts.CUDAIsDevice) { |
| // The CUDA_ARCH value is set for the GPU target specified in the NVPTX |
| // backend's target defines. |
| Builder.defineMacro("__CUDA_ARCH__"); |
| } |
| |
| // We need to communicate this to our CUDA header wrapper, which in turn |
| // informs the proper CUDA headers of this choice. |
| if (LangOpts.CUDADeviceApproxTranscendentals || LangOpts.FastMath) { |
| Builder.defineMacro("__CLANG_CUDA_APPROX_TRANSCENDENTALS__"); |
| } |
| |
| // OpenCL definitions. |
| if (LangOpts.OpenCL) { |
| #define OPENCLEXT(Ext) \ |
| if (TI.getSupportedOpenCLOpts().isSupported(#Ext, \ |
| LangOpts.OpenCLVersion)) \ |
| Builder.defineMacro(#Ext); |
| #include "clang/Basic/OpenCLExtensions.def" |
| } |
| |
| if (TI.hasInt128Type() && LangOpts.CPlusPlus && LangOpts.GNUMode) { |
| // For each extended integer type, g++ defines a macro mapping the |
| // index of the type (0 in this case) in some list of extended types |
| // to the type. |
| Builder.defineMacro("__GLIBCXX_TYPE_INT_N_0", "__int128"); |
| Builder.defineMacro("__GLIBCXX_BITSIZE_INT_N_0", "128"); |
| } |
| |
| // Get other target #defines. |
| TI.getTargetDefines(LangOpts, Builder); |
| } |
| |
| /// InitializePreprocessor - Initialize the preprocessor getting it and the |
| /// environment ready to process a single file. This returns true on error. |
| /// |
| void clang::InitializePreprocessor( |
| Preprocessor &PP, const PreprocessorOptions &InitOpts, |
| const PCHContainerReader &PCHContainerRdr, |
| const FrontendOptions &FEOpts) { |
| const LangOptions &LangOpts = PP.getLangOpts(); |
| std::string PredefineBuffer; |
| PredefineBuffer.reserve(4080); |
| llvm::raw_string_ostream Predefines(PredefineBuffer); |
| MacroBuilder Builder(Predefines); |
| |
| // Emit line markers for various builtin sections of the file. We don't do |
| // this in asm preprocessor mode, because "# 4" is not a line marker directive |
| // in this mode. |
| if (!PP.getLangOpts().AsmPreprocessor) |
| Builder.append("# 1 \"<built-in>\" 3"); |
| |
| // Install things like __POWERPC__, __GNUC__, etc into the macro table. |
| if (InitOpts.UsePredefines) { |
| if (LangOpts.CUDA && PP.getAuxTargetInfo()) |
| InitializePredefinedMacros(*PP.getAuxTargetInfo(), LangOpts, FEOpts, |
| Builder); |
| |
| InitializePredefinedMacros(PP.getTargetInfo(), LangOpts, FEOpts, Builder); |
| |
| // Install definitions to make Objective-C++ ARC work well with various |
| // C++ Standard Library implementations. |
| if (LangOpts.ObjC1 && LangOpts.CPlusPlus && |
| (LangOpts.ObjCAutoRefCount || LangOpts.ObjCWeak)) { |
| switch (InitOpts.ObjCXXARCStandardLibrary) { |
| case ARCXX_nolib: |
| case ARCXX_libcxx: |
| break; |
| |
| case ARCXX_libstdcxx: |
| AddObjCXXARCLibstdcxxDefines(LangOpts, Builder); |
| break; |
| } |
| } |
| } |
| |
| // Even with predefines off, some macros are still predefined. |
| // These should all be defined in the preprocessor according to the |
| // current language configuration. |
| InitializeStandardPredefinedMacros(PP.getTargetInfo(), PP.getLangOpts(), |
| FEOpts, Builder); |
| |
| // Add on the predefines from the driver. Wrap in a #line directive to report |
| // that they come from the command line. |
| if (!PP.getLangOpts().AsmPreprocessor) |
| Builder.append("# 1 \"<command line>\" 1"); |
| |
| // Process #define's and #undef's in the order they are given. |
| for (unsigned i = 0, e = InitOpts.Macros.size(); i != e; ++i) { |
| if (InitOpts.Macros[i].second) // isUndef |
| Builder.undefineMacro(InitOpts.Macros[i].first); |
| else |
| DefineBuiltinMacro(Builder, InitOpts.Macros[i].first, |
| PP.getDiagnostics()); |
| } |
| |
| // Exit the command line and go back to <built-in> (2 is LC_LEAVE). |
| if (!PP.getLangOpts().AsmPreprocessor) |
| Builder.append("# 1 \"<built-in>\" 2"); |
| |
| // If -imacros are specified, include them now. These are processed before |
| // any -include directives. |
| for (unsigned i = 0, e = InitOpts.MacroIncludes.size(); i != e; ++i) |
| AddImplicitIncludeMacros(Builder, InitOpts.MacroIncludes[i]); |
| |
| // Process -include-pch/-include-pth directives. |
| if (!InitOpts.ImplicitPCHInclude.empty()) |
| AddImplicitIncludePCH(Builder, PP, PCHContainerRdr, |
| InitOpts.ImplicitPCHInclude); |
| if (!InitOpts.ImplicitPTHInclude.empty()) |
| AddImplicitIncludePTH(Builder, PP, InitOpts.ImplicitPTHInclude); |
| |
| // Process -include directives. |
| for (unsigned i = 0, e = InitOpts.Includes.size(); i != e; ++i) { |
| const std::string &Path = InitOpts.Includes[i]; |
| AddImplicitInclude(Builder, Path); |
| } |
| |
| // Instruct the preprocessor to skip the preamble. |
| PP.setSkipMainFilePreamble(InitOpts.PrecompiledPreambleBytes.first, |
| InitOpts.PrecompiledPreambleBytes.second); |
| |
| // Copy PredefinedBuffer into the Preprocessor. |
| PP.setPredefines(Predefines.str()); |
| } |
