1 //===--- InitPreprocessor.cpp - PP initialization code. ---------*- 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 implements the clang::InitializePreprocessor function. 11 // 12 //===----------------------------------------------------------------------===// 13 14 #include "clang/Frontend/Utils.h" 15 #include "clang/Basic/FileManager.h" 16 #include "clang/Basic/MacroBuilder.h" 17 #include "clang/Basic/SourceManager.h" 18 #include "clang/Basic/TargetInfo.h" 19 #include "clang/Basic/Version.h" 20 #include "clang/Frontend/FrontendDiagnostic.h" 21 #include "clang/Frontend/FrontendOptions.h" 22 #include "clang/Lex/HeaderSearch.h" 23 #include "clang/Lex/Preprocessor.h" 24 #include "clang/Lex/PreprocessorOptions.h" 25 #include "clang/Serialization/ASTReader.h" 26 #include "llvm/ADT/APFloat.h" 27 #include "llvm/Support/FileSystem.h" 28 #include "llvm/Support/MemoryBuffer.h" 29 #include "llvm/Support/Path.h" 30 using namespace clang; 31 32 static bool MacroBodyEndsInBackslash(StringRef MacroBody) { 33 while (!MacroBody.empty() && isWhitespace(MacroBody.back())) 34 MacroBody = MacroBody.drop_back(); 35 return !MacroBody.empty() && MacroBody.back() == '\\'; 36 } 37 38 // Append a #define line to Buf for Macro. Macro should be of the form XXX, 39 // in which case we emit "#define XXX 1" or "XXX=Y z W" in which case we emit 40 // "#define XXX Y z W". To get a #define with no value, use "XXX=". 41 static void DefineBuiltinMacro(MacroBuilder &Builder, StringRef Macro, 42 DiagnosticsEngine &Diags) { 43 std::pair<StringRef, StringRef> MacroPair = Macro.split('='); 44 StringRef MacroName = MacroPair.first; 45 StringRef MacroBody = MacroPair.second; 46 if (MacroName.size() != Macro.size()) { 47 // Per GCC -D semantics, the macro ends at \n if it exists. 48 StringRef::size_type End = MacroBody.find_first_of("\n\r"); 49 if (End != StringRef::npos) 50 Diags.Report(diag::warn_fe_macro_contains_embedded_newline) 51 << MacroName; 52 MacroBody = MacroBody.substr(0, End); 53 // We handle macro bodies which end in a backslash by appending an extra 54 // backslash+newline. This makes sure we don't accidentally treat the 55 // backslash as a line continuation marker. 56 if (MacroBodyEndsInBackslash(MacroBody)) 57 Builder.defineMacro(MacroName, Twine(MacroBody) + "\\\n"); 58 else 59 Builder.defineMacro(MacroName, MacroBody); 60 } else { 61 // Push "macroname 1". 62 Builder.defineMacro(Macro); 63 } 64 } 65 66 /// AddImplicitInclude - Add an implicit \#include of the specified file to the 67 /// predefines buffer. 68 static void AddImplicitInclude(MacroBuilder &Builder, StringRef File, 69 FileManager &FileMgr) { 70 Builder.append(Twine("#include \"") + 71 HeaderSearch::NormalizeDashIncludePath(File, FileMgr) + "\""); 72 } 73 74 static void AddImplicitIncludeMacros(MacroBuilder &Builder, 75 StringRef File, 76 FileManager &FileMgr) { 77 Builder.append(Twine("#__include_macros \"") + 78 HeaderSearch::NormalizeDashIncludePath(File, FileMgr) + "\""); 79 // Marker token to stop the __include_macros fetch loop. 80 Builder.append("##"); // ##? 81 } 82 83 /// AddImplicitIncludePTH - Add an implicit \#include using the original file 84 /// used to generate a PTH cache. 85 static void AddImplicitIncludePTH(MacroBuilder &Builder, Preprocessor &PP, 86 StringRef ImplicitIncludePTH) { 87 PTHManager *P = PP.getPTHManager(); 88 // Null check 'P' in the corner case where it couldn't be created. 89 const char *OriginalFile = P ? P->getOriginalSourceFile() : nullptr; 90 91 if (!OriginalFile) { 92 PP.getDiagnostics().Report(diag::err_fe_pth_file_has_no_source_header) 93 << ImplicitIncludePTH; 94 return; 95 } 96 97 AddImplicitInclude(Builder, OriginalFile, PP.getFileManager()); 98 } 99 100 /// \brief Add an implicit \#include using the original file used to generate 101 /// a PCH file. 102 static void AddImplicitIncludePCH(MacroBuilder &Builder, Preprocessor &PP, 103 StringRef ImplicitIncludePCH) { 104 std::string OriginalFile = 105 ASTReader::getOriginalSourceFile(ImplicitIncludePCH, PP.getFileManager(), 106 PP.getDiagnostics()); 107 if (OriginalFile.empty()) 108 return; 109 110 AddImplicitInclude(Builder, OriginalFile, PP.getFileManager()); 111 } 112 113 /// PickFP - This is used to pick a value based on the FP semantics of the 114 /// specified FP model. 115 template <typename T> 116 static T PickFP(const llvm::fltSemantics *Sem, T IEEESingleVal, 117 T IEEEDoubleVal, T X87DoubleExtendedVal, T PPCDoubleDoubleVal, 118 T IEEEQuadVal) { 119 if (Sem == (const llvm::fltSemantics*)&llvm::APFloat::IEEEsingle) 120 return IEEESingleVal; 121 if (Sem == (const llvm::fltSemantics*)&llvm::APFloat::IEEEdouble) 122 return IEEEDoubleVal; 123 if (Sem == (const llvm::fltSemantics*)&llvm::APFloat::x87DoubleExtended) 124 return X87DoubleExtendedVal; 125 if (Sem == (const llvm::fltSemantics*)&llvm::APFloat::PPCDoubleDouble) 126 return PPCDoubleDoubleVal; 127 assert(Sem == (const llvm::fltSemantics*)&llvm::APFloat::IEEEquad); 128 return IEEEQuadVal; 129 } 130 131 static void DefineFloatMacros(MacroBuilder &Builder, StringRef Prefix, 132 const llvm::fltSemantics *Sem, StringRef Ext) { 133 const char *DenormMin, *Epsilon, *Max, *Min; 134 DenormMin = PickFP(Sem, "1.40129846e-45", "4.9406564584124654e-324", 135 "3.64519953188247460253e-4951", 136 "4.94065645841246544176568792868221e-324", 137 "6.47517511943802511092443895822764655e-4966"); 138 int Digits = PickFP(Sem, 6, 15, 18, 31, 33); 139 Epsilon = PickFP(Sem, "1.19209290e-7", "2.2204460492503131e-16", 140 "1.08420217248550443401e-19", 141 "4.94065645841246544176568792868221e-324", 142 "1.92592994438723585305597794258492732e-34"); 143 int MantissaDigits = PickFP(Sem, 24, 53, 64, 106, 113); 144 int Min10Exp = PickFP(Sem, -37, -307, -4931, -291, -4931); 145 int Max10Exp = PickFP(Sem, 38, 308, 4932, 308, 4932); 146 int MinExp = PickFP(Sem, -125, -1021, -16381, -968, -16381); 147 int MaxExp = PickFP(Sem, 128, 1024, 16384, 1024, 16384); 148 Min = PickFP(Sem, "1.17549435e-38", "2.2250738585072014e-308", 149 "3.36210314311209350626e-4932", 150 "2.00416836000897277799610805135016e-292", 151 "3.36210314311209350626267781732175260e-4932"); 152 Max = PickFP(Sem, "3.40282347e+38", "1.7976931348623157e+308", 153 "1.18973149535723176502e+4932", 154 "1.79769313486231580793728971405301e+308", 155 "1.18973149535723176508575932662800702e+4932"); 156 157 SmallString<32> DefPrefix; 158 DefPrefix = "__"; 159 DefPrefix += Prefix; 160 DefPrefix += "_"; 161 162 Builder.defineMacro(DefPrefix + "DENORM_MIN__", Twine(DenormMin)+Ext); 163 Builder.defineMacro(DefPrefix + "HAS_DENORM__"); 164 Builder.defineMacro(DefPrefix + "DIG__", Twine(Digits)); 165 Builder.defineMacro(DefPrefix + "EPSILON__", Twine(Epsilon)+Ext); 166 Builder.defineMacro(DefPrefix + "HAS_INFINITY__"); 167 Builder.defineMacro(DefPrefix + "HAS_QUIET_NAN__"); 168 Builder.defineMacro(DefPrefix + "MANT_DIG__", Twine(MantissaDigits)); 169 170 Builder.defineMacro(DefPrefix + "MAX_10_EXP__", Twine(Max10Exp)); 171 Builder.defineMacro(DefPrefix + "MAX_EXP__", Twine(MaxExp)); 172 Builder.defineMacro(DefPrefix + "MAX__", Twine(Max)+Ext); 173 174 Builder.defineMacro(DefPrefix + "MIN_10_EXP__","("+Twine(Min10Exp)+")"); 175 Builder.defineMacro(DefPrefix + "MIN_EXP__", "("+Twine(MinExp)+")"); 176 Builder.defineMacro(DefPrefix + "MIN__", Twine(Min)+Ext); 177 } 178 179 180 /// DefineTypeSize - Emit a macro to the predefines buffer that declares a macro 181 /// named MacroName with the max value for a type with width 'TypeWidth' a 182 /// signedness of 'isSigned' and with a value suffix of 'ValSuffix' (e.g. LL). 183 static void DefineTypeSize(const Twine &MacroName, unsigned TypeWidth, 184 StringRef ValSuffix, bool isSigned, 185 MacroBuilder &Builder) { 186 llvm::APInt MaxVal = isSigned ? llvm::APInt::getSignedMaxValue(TypeWidth) 187 : llvm::APInt::getMaxValue(TypeWidth); 188 Builder.defineMacro(MacroName, MaxVal.toString(10, isSigned) + ValSuffix); 189 } 190 191 /// DefineTypeSize - An overloaded helper that uses TargetInfo to determine 192 /// the width, suffix, and signedness of the given type 193 static void DefineTypeSize(const Twine &MacroName, TargetInfo::IntType Ty, 194 const TargetInfo &TI, MacroBuilder &Builder) { 195 DefineTypeSize(MacroName, TI.getTypeWidth(Ty), TI.getTypeConstantSuffix(Ty), 196 TI.isTypeSigned(Ty), Builder); 197 } 198 199 static void DefineFmt(const Twine &Prefix, TargetInfo::IntType Ty, 200 const TargetInfo &TI, MacroBuilder &Builder) { 201 bool IsSigned = TI.isTypeSigned(Ty); 202 StringRef FmtModifier = TI.getTypeFormatModifier(Ty); 203 for (const char *Fmt = IsSigned ? "di" : "ouxX"; *Fmt; ++Fmt) { 204 Twine Macro = Prefix + "_FMT" + Twine(*Fmt) + "__"; 205 Twine Value = Twine("\"") + FmtModifier + Twine(*Fmt) + "\""; 206 Builder.defineMacro(Macro, Value); 207 } 208 } 209 210 static void DefineType(const Twine &MacroName, TargetInfo::IntType Ty, 211 MacroBuilder &Builder) { 212 Builder.defineMacro(MacroName, TargetInfo::getTypeName(Ty)); 213 } 214 215 static void DefineTypeWidth(StringRef MacroName, TargetInfo::IntType Ty, 216 const TargetInfo &TI, MacroBuilder &Builder) { 217 Builder.defineMacro(MacroName, Twine(TI.getTypeWidth(Ty))); 218 } 219 220 static void DefineTypeSizeof(StringRef MacroName, unsigned BitWidth, 221 const TargetInfo &TI, MacroBuilder &Builder) { 222 Builder.defineMacro(MacroName, 223 Twine(BitWidth / TI.getCharWidth())); 224 } 225 226 static void DefineExactWidthIntType(TargetInfo::IntType Ty, 227 const TargetInfo &TI, 228 MacroBuilder &Builder) { 229 int TypeWidth = TI.getTypeWidth(Ty); 230 bool IsSigned = TI.isTypeSigned(Ty); 231 232 // Use the target specified int64 type, when appropriate, so that [u]int64_t 233 // ends up being defined in terms of the correct type. 234 if (TypeWidth == 64) 235 Ty = IsSigned ? TI.getInt64Type() : TI.getIntTypeByWidth(64, false); 236 237 const char *Prefix = IsSigned ? "__INT" : "__UINT"; 238 239 DefineType(Prefix + Twine(TypeWidth) + "_TYPE__", Ty, Builder); 240 DefineFmt(Prefix + Twine(TypeWidth), Ty, TI, Builder); 241 242 StringRef ConstSuffix(TargetInfo::getTypeConstantSuffix(Ty)); 243 if (!ConstSuffix.empty()) 244 Builder.defineMacro(Prefix + Twine(TypeWidth) + "_C_SUFFIX__", ConstSuffix); 245 246 } 247 248 static void DefineExactWidthIntTypeSize(TargetInfo::IntType Ty, 249 const TargetInfo &TI, 250 MacroBuilder &Builder) { 251 int TypeWidth = TI.getTypeWidth(Ty); 252 bool IsSigned = TI.isTypeSigned(Ty); 253 254 // Use the target specified int64 type, when appropriate, so that [u]int64_t 255 // ends up being defined in terms of the correct type. 256 if (TypeWidth == 64) 257 Ty = IsSigned ? TI.getInt64Type() : TI.getIntTypeByWidth(64, false); 258 259 const char *Prefix = IsSigned ? "__INT" : "__UINT"; 260 DefineTypeSize(Prefix + Twine(TypeWidth) + "_MAX__", Ty, TI, Builder); 261 } 262 263 static void DefineLeastWidthIntType(unsigned TypeWidth, bool IsSigned, 264 const TargetInfo &TI, 265 MacroBuilder &Builder) { 266 TargetInfo::IntType Ty = TI.getLeastIntTypeByWidth(TypeWidth, IsSigned); 267 if (Ty == TargetInfo::NoInt) 268 return; 269 270 const char *Prefix = IsSigned ? "__INT_LEAST" : "__UINT_LEAST"; 271 DefineType(Prefix + Twine(TypeWidth) + "_TYPE__", Ty, Builder); 272 DefineTypeSize(Prefix + Twine(TypeWidth) + "_MAX__", Ty, TI, Builder); 273 DefineFmt(Prefix + Twine(TypeWidth), Ty, TI, Builder); 274 } 275 276 static void DefineFastIntType(unsigned TypeWidth, bool IsSigned, 277 const TargetInfo &TI, MacroBuilder &Builder) { 278 // stdint.h currently defines the fast int types as equivalent to the least 279 // types. 280 TargetInfo::IntType Ty = TI.getLeastIntTypeByWidth(TypeWidth, IsSigned); 281 if (Ty == TargetInfo::NoInt) 282 return; 283 284 const char *Prefix = IsSigned ? "__INT_FAST" : "__UINT_FAST"; 285 DefineType(Prefix + Twine(TypeWidth) + "_TYPE__", Ty, Builder); 286 DefineTypeSize(Prefix + Twine(TypeWidth) + "_MAX__", Ty, TI, Builder); 287 288 DefineFmt(Prefix + Twine(TypeWidth), Ty, TI, Builder); 289 } 290 291 292 /// Get the value the ATOMIC_*_LOCK_FREE macro should have for a type with 293 /// the specified properties. 294 static const char *getLockFreeValue(unsigned TypeWidth, unsigned TypeAlign, 295 unsigned InlineWidth) { 296 // Fully-aligned, power-of-2 sizes no larger than the inline 297 // width will be inlined as lock-free operations. 298 if (TypeWidth == TypeAlign && (TypeWidth & (TypeWidth - 1)) == 0 && 299 TypeWidth <= InlineWidth) 300 return "2"; // "always lock free" 301 // We cannot be certain what operations the lib calls might be 302 // able to implement as lock-free on future processors. 303 return "1"; // "sometimes lock free" 304 } 305 306 /// \brief Add definitions required for a smooth interaction between 307 /// Objective-C++ automated reference counting and libstdc++ (4.2). 308 static void AddObjCXXARCLibstdcxxDefines(const LangOptions &LangOpts, 309 MacroBuilder &Builder) { 310 Builder.defineMacro("_GLIBCXX_PREDEFINED_OBJC_ARC_IS_SCALAR"); 311 312 std::string Result; 313 { 314 // Provide specializations for the __is_scalar type trait so that 315 // lifetime-qualified objects are not considered "scalar" types, which 316 // libstdc++ uses as an indicator of the presence of trivial copy, assign, 317 // default-construct, and destruct semantics (none of which hold for 318 // lifetime-qualified objects in ARC). 319 llvm::raw_string_ostream Out(Result); 320 321 Out << "namespace std {\n" 322 << "\n" 323 << "struct __true_type;\n" 324 << "struct __false_type;\n" 325 << "\n"; 326 327 Out << "template<typename _Tp> struct __is_scalar;\n" 328 << "\n"; 329 330 Out << "template<typename _Tp>\n" 331 << "struct __is_scalar<__attribute__((objc_ownership(strong))) _Tp> {\n" 332 << " enum { __value = 0 };\n" 333 << " typedef __false_type __type;\n" 334 << "};\n" 335 << "\n"; 336 337 if (LangOpts.ObjCARCWeak) { 338 Out << "template<typename _Tp>\n" 339 << "struct __is_scalar<__attribute__((objc_ownership(weak))) _Tp> {\n" 340 << " enum { __value = 0 };\n" 341 << " typedef __false_type __type;\n" 342 << "};\n" 343 << "\n"; 344 } 345 346 Out << "template<typename _Tp>\n" 347 << "struct __is_scalar<__attribute__((objc_ownership(autoreleasing)))" 348 << " _Tp> {\n" 349 << " enum { __value = 0 };\n" 350 << " typedef __false_type __type;\n" 351 << "};\n" 352 << "\n"; 353 354 Out << "}\n"; 355 } 356 Builder.append(Result); 357 } 358 359 static void InitializeStandardPredefinedMacros(const TargetInfo &TI, 360 const LangOptions &LangOpts, 361 const FrontendOptions &FEOpts, 362 MacroBuilder &Builder) { 363 if (!LangOpts.MSVCCompat && !LangOpts.TraditionalCPP) 364 Builder.defineMacro("__STDC__"); 365 if (LangOpts.Freestanding) 366 Builder.defineMacro("__STDC_HOSTED__", "0"); 367 else 368 Builder.defineMacro("__STDC_HOSTED__"); 369 370 if (!LangOpts.CPlusPlus) { 371 if (LangOpts.C11) 372 Builder.defineMacro("__STDC_VERSION__", "201112L"); 373 else if (LangOpts.C99) 374 Builder.defineMacro("__STDC_VERSION__", "199901L"); 375 else if (!LangOpts.GNUMode && LangOpts.Digraphs) 376 Builder.defineMacro("__STDC_VERSION__", "199409L"); 377 } else { 378 // FIXME: Use correct value for C++17. 379 if (LangOpts.CPlusPlus1z) 380 Builder.defineMacro("__cplusplus", "201406L"); 381 // C++1y [cpp.predefined]p1: 382 // The name __cplusplus is defined to the value 201402L when compiling a 383 // C++ translation unit. 384 else if (LangOpts.CPlusPlus1y) 385 Builder.defineMacro("__cplusplus", "201402L"); 386 // C++11 [cpp.predefined]p1: 387 // The name __cplusplus is defined to the value 201103L when compiling a 388 // C++ translation unit. 389 else if (LangOpts.CPlusPlus11) 390 Builder.defineMacro("__cplusplus", "201103L"); 391 // C++03 [cpp.predefined]p1: 392 // The name __cplusplus is defined to the value 199711L when compiling a 393 // C++ translation unit. 394 else 395 Builder.defineMacro("__cplusplus", "199711L"); 396 } 397 398 // In C11 these are environment macros. In C++11 they are only defined 399 // as part of <cuchar>. To prevent breakage when mixing C and C++ 400 // code, define these macros unconditionally. We can define them 401 // unconditionally, as Clang always uses UTF-16 and UTF-32 for 16-bit 402 // and 32-bit character literals. 403 Builder.defineMacro("__STDC_UTF_16__", "1"); 404 Builder.defineMacro("__STDC_UTF_32__", "1"); 405 406 if (LangOpts.ObjC1) 407 Builder.defineMacro("__OBJC__"); 408 409 // Not "standard" per se, but available even with the -undef flag. 410 if (LangOpts.AsmPreprocessor) 411 Builder.defineMacro("__ASSEMBLER__"); 412 } 413 414 /// Initialize the predefined C++ language feature test macros defined in 415 /// ISO/IEC JTC1/SC22/WG21 (C++) SD-6: "SG10 Feature Test Recommendations". 416 static void InitializeCPlusPlusFeatureTestMacros(const LangOptions &LangOpts, 417 MacroBuilder &Builder) { 418 // C++11 features. 419 if (LangOpts.CPlusPlus11) { 420 Builder.defineMacro("__cpp_unicode_characters", "200704"); 421 Builder.defineMacro("__cpp_raw_strings", "200710"); 422 Builder.defineMacro("__cpp_unicode_literals", "200710"); 423 Builder.defineMacro("__cpp_user_defined_literals", "200809"); 424 Builder.defineMacro("__cpp_lambdas", "200907"); 425 Builder.defineMacro("__cpp_constexpr", 426 LangOpts.CPlusPlus1y ? "201304" : "200704"); 427 Builder.defineMacro("__cpp_static_assert", "200410"); 428 Builder.defineMacro("__cpp_decltype", "200707"); 429 Builder.defineMacro("__cpp_attributes", "200809"); 430 Builder.defineMacro("__cpp_rvalue_references", "200610"); 431 Builder.defineMacro("__cpp_variadic_templates", "200704"); 432 } 433 434 // C++14 features. 435 if (LangOpts.CPlusPlus1y) { 436 Builder.defineMacro("__cpp_binary_literals", "201304"); 437 Builder.defineMacro("__cpp_init_captures", "201304"); 438 Builder.defineMacro("__cpp_generic_lambdas", "201304"); 439 Builder.defineMacro("__cpp_decltype_auto", "201304"); 440 Builder.defineMacro("__cpp_return_type_deduction", "201304"); 441 Builder.defineMacro("__cpp_aggregate_nsdmi", "201304"); 442 Builder.defineMacro("__cpp_variable_templates", "201304"); 443 } 444 } 445 446 static void InitializePredefinedMacros(const TargetInfo &TI, 447 const LangOptions &LangOpts, 448 const FrontendOptions &FEOpts, 449 MacroBuilder &Builder) { 450 // Compiler version introspection macros. 451 Builder.defineMacro("__llvm__"); // LLVM Backend 452 Builder.defineMacro("__clang__"); // Clang Frontend 453 #define TOSTR2(X) #X 454 #define TOSTR(X) TOSTR2(X) 455 Builder.defineMacro("__clang_major__", TOSTR(CLANG_VERSION_MAJOR)); 456 Builder.defineMacro("__clang_minor__", TOSTR(CLANG_VERSION_MINOR)); 457 #ifdef CLANG_VERSION_PATCHLEVEL 458 Builder.defineMacro("__clang_patchlevel__", TOSTR(CLANG_VERSION_PATCHLEVEL)); 459 #else 460 Builder.defineMacro("__clang_patchlevel__", "0"); 461 #endif 462 Builder.defineMacro("__clang_version__", 463 "\"" CLANG_VERSION_STRING " " 464 + getClangFullRepositoryVersion() + "\""); 465 #undef TOSTR 466 #undef TOSTR2 467 if (!LangOpts.MSVCCompat) { 468 // Currently claim to be compatible with GCC 4.2.1-5621, but only if we're 469 // not compiling for MSVC compatibility 470 Builder.defineMacro("__GNUC_MINOR__", "2"); 471 Builder.defineMacro("__GNUC_PATCHLEVEL__", "1"); 472 Builder.defineMacro("__GNUC__", "4"); 473 Builder.defineMacro("__GXX_ABI_VERSION", "1002"); 474 } 475 476 // Define macros for the C11 / C++11 memory orderings 477 Builder.defineMacro("__ATOMIC_RELAXED", "0"); 478 Builder.defineMacro("__ATOMIC_CONSUME", "1"); 479 Builder.defineMacro("__ATOMIC_ACQUIRE", "2"); 480 Builder.defineMacro("__ATOMIC_RELEASE", "3"); 481 Builder.defineMacro("__ATOMIC_ACQ_REL", "4"); 482 Builder.defineMacro("__ATOMIC_SEQ_CST", "5"); 483 484 // Support for #pragma redefine_extname (Sun compatibility) 485 Builder.defineMacro("__PRAGMA_REDEFINE_EXTNAME", "1"); 486 487 // As sad as it is, enough software depends on the __VERSION__ for version 488 // checks that it is necessary to report 4.2.1 (the base GCC version we claim 489 // compatibility with) first. 490 Builder.defineMacro("__VERSION__", "\"4.2.1 Compatible " + 491 Twine(getClangFullCPPVersion()) + "\""); 492 493 // Initialize language-specific preprocessor defines. 494 495 // Standard conforming mode? 496 if (!LangOpts.GNUMode && !LangOpts.MSVCCompat) 497 Builder.defineMacro("__STRICT_ANSI__"); 498 499 if (!LangOpts.MSVCCompat && LangOpts.CPlusPlus11) 500 Builder.defineMacro("__GXX_EXPERIMENTAL_CXX0X__"); 501 502 if (LangOpts.ObjC1) { 503 if (LangOpts.ObjCRuntime.isNonFragile()) { 504 Builder.defineMacro("__OBJC2__"); 505 506 if (LangOpts.ObjCExceptions) 507 Builder.defineMacro("OBJC_ZEROCOST_EXCEPTIONS"); 508 } 509 510 if (LangOpts.getGC() != LangOptions::NonGC) 511 Builder.defineMacro("__OBJC_GC__"); 512 513 if (LangOpts.ObjCRuntime.isNeXTFamily()) 514 Builder.defineMacro("__NEXT_RUNTIME__"); 515 516 if (LangOpts.ObjCRuntime.getKind() == ObjCRuntime::ObjFW) { 517 VersionTuple tuple = LangOpts.ObjCRuntime.getVersion(); 518 519 unsigned minor = 0; 520 if (tuple.getMinor().hasValue()) 521 minor = tuple.getMinor().getValue(); 522 523 unsigned subminor = 0; 524 if (tuple.getSubminor().hasValue()) 525 subminor = tuple.getSubminor().getValue(); 526 527 Builder.defineMacro("__OBJFW_RUNTIME_ABI__", 528 Twine(tuple.getMajor() * 10000 + minor * 100 + 529 subminor)); 530 } 531 532 Builder.defineMacro("IBOutlet", "__attribute__((iboutlet))"); 533 Builder.defineMacro("IBOutletCollection(ClassName)", 534 "__attribute__((iboutletcollection(ClassName)))"); 535 Builder.defineMacro("IBAction", "void)__attribute__((ibaction)"); 536 } 537 538 if (LangOpts.CPlusPlus) 539 InitializeCPlusPlusFeatureTestMacros(LangOpts, Builder); 540 541 // darwin_constant_cfstrings controls this. This is also dependent 542 // on other things like the runtime I believe. This is set even for C code. 543 if (!LangOpts.NoConstantCFStrings) 544 Builder.defineMacro("__CONSTANT_CFSTRINGS__"); 545 546 if (LangOpts.ObjC2) 547 Builder.defineMacro("OBJC_NEW_PROPERTIES"); 548 549 if (LangOpts.PascalStrings) 550 Builder.defineMacro("__PASCAL_STRINGS__"); 551 552 if (LangOpts.Blocks) { 553 Builder.defineMacro("__block", "__attribute__((__blocks__(byref)))"); 554 Builder.defineMacro("__BLOCKS__"); 555 } 556 557 if (!LangOpts.MSVCCompat && LangOpts.CXXExceptions) 558 Builder.defineMacro("__EXCEPTIONS"); 559 if (!LangOpts.MSVCCompat && LangOpts.RTTI) 560 Builder.defineMacro("__GXX_RTTI"); 561 if (LangOpts.SjLjExceptions) 562 Builder.defineMacro("__USING_SJLJ_EXCEPTIONS__"); 563 564 if (LangOpts.Deprecated) 565 Builder.defineMacro("__DEPRECATED"); 566 567 if (!LangOpts.MSVCCompat && LangOpts.CPlusPlus) { 568 Builder.defineMacro("__GNUG__", "4"); 569 Builder.defineMacro("__GXX_WEAK__"); 570 Builder.defineMacro("__private_extern__", "extern"); 571 } 572 573 if (LangOpts.MicrosoftExt) { 574 if (LangOpts.WChar) { 575 // wchar_t supported as a keyword. 576 Builder.defineMacro("_WCHAR_T_DEFINED"); 577 Builder.defineMacro("_NATIVE_WCHAR_T_DEFINED"); 578 } 579 } 580 581 if (LangOpts.Optimize) 582 Builder.defineMacro("__OPTIMIZE__"); 583 if (LangOpts.OptimizeSize) 584 Builder.defineMacro("__OPTIMIZE_SIZE__"); 585 586 if (LangOpts.FastMath) 587 Builder.defineMacro("__FAST_MATH__"); 588 589 // Initialize target-specific preprocessor defines. 590 591 // __BYTE_ORDER__ was added in GCC 4.6. It's analogous 592 // to the macro __BYTE_ORDER (no trailing underscores) 593 // from glibc's <endian.h> header. 594 // We don't support the PDP-11 as a target, but include 595 // the define so it can still be compared against. 596 Builder.defineMacro("__ORDER_LITTLE_ENDIAN__", "1234"); 597 Builder.defineMacro("__ORDER_BIG_ENDIAN__", "4321"); 598 Builder.defineMacro("__ORDER_PDP_ENDIAN__", "3412"); 599 if (TI.isBigEndian()) { 600 Builder.defineMacro("__BYTE_ORDER__", "__ORDER_BIG_ENDIAN__"); 601 Builder.defineMacro("__BIG_ENDIAN__"); 602 } else { 603 Builder.defineMacro("__BYTE_ORDER__", "__ORDER_LITTLE_ENDIAN__"); 604 Builder.defineMacro("__LITTLE_ENDIAN__"); 605 } 606 607 if (TI.getPointerWidth(0) == 64 && TI.getLongWidth() == 64 608 && TI.getIntWidth() == 32) { 609 Builder.defineMacro("_LP64"); 610 Builder.defineMacro("__LP64__"); 611 } 612 613 if (TI.getPointerWidth(0) == 32 && TI.getLongWidth() == 32 614 && TI.getIntWidth() == 32) { 615 Builder.defineMacro("_ILP32"); 616 Builder.defineMacro("__ILP32__"); 617 } 618 619 // Define type sizing macros based on the target properties. 620 assert(TI.getCharWidth() == 8 && "Only support 8-bit char so far"); 621 Builder.defineMacro("__CHAR_BIT__", "8"); 622 623 DefineTypeSize("__SCHAR_MAX__", TargetInfo::SignedChar, TI, Builder); 624 DefineTypeSize("__SHRT_MAX__", TargetInfo::SignedShort, TI, Builder); 625 DefineTypeSize("__INT_MAX__", TargetInfo::SignedInt, TI, Builder); 626 DefineTypeSize("__LONG_MAX__", TargetInfo::SignedLong, TI, Builder); 627 DefineTypeSize("__LONG_LONG_MAX__", TargetInfo::SignedLongLong, TI, Builder); 628 DefineTypeSize("__WCHAR_MAX__", TI.getWCharType(), TI, Builder); 629 DefineTypeSize("__INTMAX_MAX__", TI.getIntMaxType(), TI, Builder); 630 DefineTypeSize("__SIZE_MAX__", TI.getSizeType(), TI, Builder); 631 632 if (!LangOpts.MSVCCompat) { 633 DefineTypeSize("__UINTMAX_MAX__", TI.getUIntMaxType(), TI, Builder); 634 DefineTypeSize("__PTRDIFF_MAX__", TI.getPtrDiffType(0), TI, Builder); 635 DefineTypeSize("__INTPTR_MAX__", TI.getIntPtrType(), TI, Builder); 636 DefineTypeSize("__UINTPTR_MAX__", TI.getUIntPtrType(), TI, Builder); 637 } 638 639 DefineTypeSizeof("__SIZEOF_DOUBLE__", TI.getDoubleWidth(), TI, Builder); 640 DefineTypeSizeof("__SIZEOF_FLOAT__", TI.getFloatWidth(), TI, Builder); 641 DefineTypeSizeof("__SIZEOF_INT__", TI.getIntWidth(), TI, Builder); 642 DefineTypeSizeof("__SIZEOF_LONG__", TI.getLongWidth(), TI, Builder); 643 DefineTypeSizeof("__SIZEOF_LONG_DOUBLE__",TI.getLongDoubleWidth(),TI,Builder); 644 DefineTypeSizeof("__SIZEOF_LONG_LONG__", TI.getLongLongWidth(), TI, Builder); 645 DefineTypeSizeof("__SIZEOF_POINTER__", TI.getPointerWidth(0), TI, Builder); 646 DefineTypeSizeof("__SIZEOF_SHORT__", TI.getShortWidth(), TI, Builder); 647 DefineTypeSizeof("__SIZEOF_PTRDIFF_T__", 648 TI.getTypeWidth(TI.getPtrDiffType(0)), TI, Builder); 649 DefineTypeSizeof("__SIZEOF_SIZE_T__", 650 TI.getTypeWidth(TI.getSizeType()), TI, Builder); 651 DefineTypeSizeof("__SIZEOF_WCHAR_T__", 652 TI.getTypeWidth(TI.getWCharType()), TI, Builder); 653 DefineTypeSizeof("__SIZEOF_WINT_T__", 654 TI.getTypeWidth(TI.getWIntType()), TI, Builder); 655 if (TI.hasInt128Type()) 656 DefineTypeSizeof("__SIZEOF_INT128__", 128, TI, Builder); 657 658 DefineType("__INTMAX_TYPE__", TI.getIntMaxType(), Builder); 659 DefineFmt("__INTMAX", TI.getIntMaxType(), TI, Builder); 660 DefineType("__UINTMAX_TYPE__", TI.getUIntMaxType(), Builder); 661 DefineFmt("__UINTMAX", TI.getUIntMaxType(), TI, Builder); 662 DefineTypeWidth("__INTMAX_WIDTH__", TI.getIntMaxType(), TI, Builder); 663 DefineType("__PTRDIFF_TYPE__", TI.getPtrDiffType(0), Builder); 664 DefineFmt("__PTRDIFF", TI.getPtrDiffType(0), TI, Builder); 665 DefineTypeWidth("__PTRDIFF_WIDTH__", TI.getPtrDiffType(0), TI, Builder); 666 DefineType("__INTPTR_TYPE__", TI.getIntPtrType(), Builder); 667 DefineFmt("__INTPTR", TI.getIntPtrType(), TI, Builder); 668 DefineTypeWidth("__INTPTR_WIDTH__", TI.getIntPtrType(), TI, Builder); 669 DefineType("__SIZE_TYPE__", TI.getSizeType(), Builder); 670 DefineFmt("__SIZE", TI.getSizeType(), TI, Builder); 671 DefineTypeWidth("__SIZE_WIDTH__", TI.getSizeType(), TI, Builder); 672 DefineType("__WCHAR_TYPE__", TI.getWCharType(), Builder); 673 DefineTypeWidth("__WCHAR_WIDTH__", TI.getWCharType(), TI, Builder); 674 DefineType("__WINT_TYPE__", TI.getWIntType(), Builder); 675 DefineTypeWidth("__WINT_WIDTH__", TI.getWIntType(), TI, Builder); 676 DefineTypeWidth("__SIG_ATOMIC_WIDTH__", TI.getSigAtomicType(), TI, Builder); 677 DefineType("__CHAR16_TYPE__", TI.getChar16Type(), Builder); 678 DefineType("__CHAR32_TYPE__", TI.getChar32Type(), Builder); 679 680 if (!LangOpts.MSVCCompat) { 681 DefineTypeWidth("__UINTMAX_WIDTH__", TI.getUIntMaxType(), TI, Builder); 682 DefineType("__UINTPTR_TYPE__", TI.getUIntPtrType(), Builder); 683 DefineFmt("__UINTPTR", TI.getUIntPtrType(), TI, Builder); 684 DefineTypeWidth("__UINTPTR_WIDTH__", TI.getUIntPtrType(), TI, Builder); 685 } 686 687 DefineFloatMacros(Builder, "FLT", &TI.getFloatFormat(), "F"); 688 DefineFloatMacros(Builder, "DBL", &TI.getDoubleFormat(), ""); 689 DefineFloatMacros(Builder, "LDBL", &TI.getLongDoubleFormat(), "L"); 690 691 // Define a __POINTER_WIDTH__ macro for stdint.h. 692 Builder.defineMacro("__POINTER_WIDTH__", 693 Twine((int)TI.getPointerWidth(0))); 694 695 if (!LangOpts.CharIsSigned) 696 Builder.defineMacro("__CHAR_UNSIGNED__"); 697 698 if (!TargetInfo::isTypeSigned(TI.getWCharType())) 699 Builder.defineMacro("__WCHAR_UNSIGNED__"); 700 701 if (!TargetInfo::isTypeSigned(TI.getWIntType())) 702 Builder.defineMacro("__WINT_UNSIGNED__"); 703 704 // Define exact-width integer types for stdint.h 705 Builder.defineMacro("__INT" + Twine(TI.getCharWidth()) + "_TYPE__", 706 "char"); 707 DefineFmt("__INT" + Twine(TI.getCharWidth()), TargetInfo::SignedChar, TI, Builder); 708 709 if (TI.getShortWidth() > TI.getCharWidth()) 710 DefineExactWidthIntType(TargetInfo::SignedShort, TI, Builder); 711 712 if (TI.getIntWidth() > TI.getShortWidth()) 713 DefineExactWidthIntType(TargetInfo::SignedInt, TI, Builder); 714 715 if (TI.getLongWidth() > TI.getIntWidth()) 716 DefineExactWidthIntType(TargetInfo::SignedLong, TI, Builder); 717 718 if (TI.getLongLongWidth() > TI.getLongWidth()) 719 DefineExactWidthIntType(TargetInfo::SignedLongLong, TI, Builder); 720 721 if (!LangOpts.MSVCCompat) { 722 DefineExactWidthIntType(TargetInfo::UnsignedChar, TI, Builder); 723 DefineExactWidthIntTypeSize(TargetInfo::UnsignedChar, TI, Builder); 724 DefineExactWidthIntTypeSize(TargetInfo::SignedChar, TI, Builder); 725 726 if (TI.getShortWidth() > TI.getCharWidth()) { 727 DefineExactWidthIntType(TargetInfo::UnsignedShort, TI, Builder); 728 DefineExactWidthIntTypeSize(TargetInfo::UnsignedShort, TI, Builder); 729 DefineExactWidthIntTypeSize(TargetInfo::SignedShort, TI, Builder); 730 } 731 732 if (TI.getIntWidth() > TI.getShortWidth()) { 733 DefineExactWidthIntType(TargetInfo::UnsignedInt, TI, Builder); 734 DefineExactWidthIntTypeSize(TargetInfo::UnsignedInt, TI, Builder); 735 DefineExactWidthIntTypeSize(TargetInfo::SignedInt, TI, Builder); 736 } 737 738 if (TI.getLongWidth() > TI.getIntWidth()) { 739 DefineExactWidthIntType(TargetInfo::UnsignedLong, TI, Builder); 740 DefineExactWidthIntTypeSize(TargetInfo::UnsignedLong, TI, Builder); 741 DefineExactWidthIntTypeSize(TargetInfo::SignedLong, TI, Builder); 742 } 743 744 if (TI.getLongLongWidth() > TI.getLongWidth()) { 745 DefineExactWidthIntType(TargetInfo::UnsignedLongLong, TI, Builder); 746 DefineExactWidthIntTypeSize(TargetInfo::UnsignedLongLong, TI, Builder); 747 DefineExactWidthIntTypeSize(TargetInfo::SignedLongLong, TI, Builder); 748 } 749 750 DefineLeastWidthIntType(8, true, TI, Builder); 751 DefineLeastWidthIntType(8, false, TI, Builder); 752 DefineLeastWidthIntType(16, true, TI, Builder); 753 DefineLeastWidthIntType(16, false, TI, Builder); 754 DefineLeastWidthIntType(32, true, TI, Builder); 755 DefineLeastWidthIntType(32, false, TI, Builder); 756 DefineLeastWidthIntType(64, true, TI, Builder); 757 DefineLeastWidthIntType(64, false, TI, Builder); 758 759 DefineFastIntType(8, true, TI, Builder); 760 DefineFastIntType(8, false, TI, Builder); 761 DefineFastIntType(16, true, TI, Builder); 762 DefineFastIntType(16, false, TI, Builder); 763 DefineFastIntType(32, true, TI, Builder); 764 DefineFastIntType(32, false, TI, Builder); 765 DefineFastIntType(64, true, TI, Builder); 766 DefineFastIntType(64, false, TI, Builder); 767 } 768 769 if (const char *Prefix = TI.getUserLabelPrefix()) 770 Builder.defineMacro("__USER_LABEL_PREFIX__", Prefix); 771 772 if (LangOpts.FastMath || LangOpts.FiniteMathOnly) 773 Builder.defineMacro("__FINITE_MATH_ONLY__", "1"); 774 else 775 Builder.defineMacro("__FINITE_MATH_ONLY__", "0"); 776 777 if (!LangOpts.MSVCCompat) { 778 if (LangOpts.GNUInline) 779 Builder.defineMacro("__GNUC_GNU_INLINE__"); 780 else 781 Builder.defineMacro("__GNUC_STDC_INLINE__"); 782 783 // The value written by __atomic_test_and_set. 784 // FIXME: This is target-dependent. 785 Builder.defineMacro("__GCC_ATOMIC_TEST_AND_SET_TRUEVAL", "1"); 786 787 // Used by libstdc++ to implement ATOMIC_<foo>_LOCK_FREE. 788 unsigned InlineWidthBits = TI.getMaxAtomicInlineWidth(); 789 #define DEFINE_LOCK_FREE_MACRO(TYPE, Type) \ 790 Builder.defineMacro("__GCC_ATOMIC_" #TYPE "_LOCK_FREE", \ 791 getLockFreeValue(TI.get##Type##Width(), \ 792 TI.get##Type##Align(), \ 793 InlineWidthBits)); 794 DEFINE_LOCK_FREE_MACRO(BOOL, Bool); 795 DEFINE_LOCK_FREE_MACRO(CHAR, Char); 796 DEFINE_LOCK_FREE_MACRO(CHAR16_T, Char16); 797 DEFINE_LOCK_FREE_MACRO(CHAR32_T, Char32); 798 DEFINE_LOCK_FREE_MACRO(WCHAR_T, WChar); 799 DEFINE_LOCK_FREE_MACRO(SHORT, Short); 800 DEFINE_LOCK_FREE_MACRO(INT, Int); 801 DEFINE_LOCK_FREE_MACRO(LONG, Long); 802 DEFINE_LOCK_FREE_MACRO(LLONG, LongLong); 803 Builder.defineMacro("__GCC_ATOMIC_POINTER_LOCK_FREE", 804 getLockFreeValue(TI.getPointerWidth(0), 805 TI.getPointerAlign(0), 806 InlineWidthBits)); 807 #undef DEFINE_LOCK_FREE_MACRO 808 } 809 810 if (LangOpts.NoInlineDefine) 811 Builder.defineMacro("__NO_INLINE__"); 812 813 if (unsigned PICLevel = LangOpts.PICLevel) { 814 Builder.defineMacro("__PIC__", Twine(PICLevel)); 815 Builder.defineMacro("__pic__", Twine(PICLevel)); 816 } 817 if (unsigned PIELevel = LangOpts.PIELevel) { 818 Builder.defineMacro("__PIE__", Twine(PIELevel)); 819 Builder.defineMacro("__pie__", Twine(PIELevel)); 820 } 821 822 // Macros to control C99 numerics and <float.h> 823 Builder.defineMacro("__FLT_EVAL_METHOD__", Twine(TI.getFloatEvalMethod())); 824 Builder.defineMacro("__FLT_RADIX__", "2"); 825 int Dig = PickFP(&TI.getLongDoubleFormat(), -1/*FIXME*/, 17, 21, 33, 36); 826 Builder.defineMacro("__DECIMAL_DIG__", Twine(Dig)); 827 828 if (LangOpts.getStackProtector() == LangOptions::SSPOn) 829 Builder.defineMacro("__SSP__"); 830 else if (LangOpts.getStackProtector() == LangOptions::SSPStrong) 831 Builder.defineMacro("__SSP_STRONG__", "2"); 832 else if (LangOpts.getStackProtector() == LangOptions::SSPReq) 833 Builder.defineMacro("__SSP_ALL__", "3"); 834 835 if (FEOpts.ProgramAction == frontend::RewriteObjC) 836 Builder.defineMacro("__weak", "__attribute__((objc_gc(weak)))"); 837 838 // Define a macro that exists only when using the static analyzer. 839 if (FEOpts.ProgramAction == frontend::RunAnalysis) 840 Builder.defineMacro("__clang_analyzer__"); 841 842 if (LangOpts.FastRelaxedMath) 843 Builder.defineMacro("__FAST_RELAXED_MATH__"); 844 845 if (LangOpts.ObjCAutoRefCount) { 846 Builder.defineMacro("__weak", "__attribute__((objc_ownership(weak)))"); 847 Builder.defineMacro("__strong", "__attribute__((objc_ownership(strong)))"); 848 Builder.defineMacro("__autoreleasing", 849 "__attribute__((objc_ownership(autoreleasing)))"); 850 Builder.defineMacro("__unsafe_unretained", 851 "__attribute__((objc_ownership(none)))"); 852 } 853 854 // OpenMP definition 855 if (LangOpts.OpenMP) { 856 // OpenMP 2.2: 857 // In implementations that support a preprocessor, the _OPENMP 858 // macro name is defined to have the decimal value yyyymm where 859 // yyyy and mm are the year and the month designations of the 860 // version of the OpenMP API that the implementation support. 861 Builder.defineMacro("_OPENMP", "201307"); 862 } 863 864 // Get other target #defines. 865 TI.getTargetDefines(LangOpts, Builder); 866 } 867 868 /// InitializePreprocessor - Initialize the preprocessor getting it and the 869 /// environment ready to process a single file. This returns true on error. 870 /// 871 void clang::InitializePreprocessor(Preprocessor &PP, 872 const PreprocessorOptions &InitOpts, 873 const FrontendOptions &FEOpts) { 874 const LangOptions &LangOpts = PP.getLangOpts(); 875 std::string PredefineBuffer; 876 PredefineBuffer.reserve(4080); 877 llvm::raw_string_ostream Predefines(PredefineBuffer); 878 MacroBuilder Builder(Predefines); 879 880 // Emit line markers for various builtin sections of the file. We don't do 881 // this in asm preprocessor mode, because "# 4" is not a line marker directive 882 // in this mode. 883 if (!PP.getLangOpts().AsmPreprocessor) 884 Builder.append("# 1 \"<built-in>\" 3"); 885 886 // Install things like __POWERPC__, __GNUC__, etc into the macro table. 887 if (InitOpts.UsePredefines) { 888 InitializePredefinedMacros(PP.getTargetInfo(), LangOpts, FEOpts, Builder); 889 890 // Install definitions to make Objective-C++ ARC work well with various 891 // C++ Standard Library implementations. 892 if (LangOpts.ObjC1 && LangOpts.CPlusPlus && LangOpts.ObjCAutoRefCount) { 893 switch (InitOpts.ObjCXXARCStandardLibrary) { 894 case ARCXX_nolib: 895 case ARCXX_libcxx: 896 break; 897 898 case ARCXX_libstdcxx: 899 AddObjCXXARCLibstdcxxDefines(LangOpts, Builder); 900 break; 901 } 902 } 903 } 904 905 // Even with predefines off, some macros are still predefined. 906 // These should all be defined in the preprocessor according to the 907 // current language configuration. 908 InitializeStandardPredefinedMacros(PP.getTargetInfo(), PP.getLangOpts(), 909 FEOpts, Builder); 910 911 // Add on the predefines from the driver. Wrap in a #line directive to report 912 // that they come from the command line. 913 if (!PP.getLangOpts().AsmPreprocessor) 914 Builder.append("# 1 \"<command line>\" 1"); 915 916 // Process #define's and #undef's in the order they are given. 917 for (unsigned i = 0, e = InitOpts.Macros.size(); i != e; ++i) { 918 if (InitOpts.Macros[i].second) // isUndef 919 Builder.undefineMacro(InitOpts.Macros[i].first); 920 else 921 DefineBuiltinMacro(Builder, InitOpts.Macros[i].first, 922 PP.getDiagnostics()); 923 } 924 925 // If -imacros are specified, include them now. These are processed before 926 // any -include directives. 927 for (unsigned i = 0, e = InitOpts.MacroIncludes.size(); i != e; ++i) 928 AddImplicitIncludeMacros(Builder, InitOpts.MacroIncludes[i], 929 PP.getFileManager()); 930 931 // Process -include-pch/-include-pth directives. 932 if (!InitOpts.ImplicitPCHInclude.empty()) 933 AddImplicitIncludePCH(Builder, PP, InitOpts.ImplicitPCHInclude); 934 if (!InitOpts.ImplicitPTHInclude.empty()) 935 AddImplicitIncludePTH(Builder, PP, InitOpts.ImplicitPTHInclude); 936 937 // Process -include directives. 938 for (unsigned i = 0, e = InitOpts.Includes.size(); i != e; ++i) { 939 const std::string &Path = InitOpts.Includes[i]; 940 AddImplicitInclude(Builder, Path, PP.getFileManager()); 941 } 942 943 // Exit the command line and go back to <built-in> (2 is LC_LEAVE). 944 if (!PP.getLangOpts().AsmPreprocessor) 945 Builder.append("# 1 \"<built-in>\" 2"); 946 947 // Instruct the preprocessor to skip the preamble. 948 PP.setSkipMainFilePreamble(InitOpts.PrecompiledPreambleBytes.first, 949 InitOpts.PrecompiledPreambleBytes.second); 950 951 // Copy PredefinedBuffer into the Preprocessor. 952 PP.setPredefines(Predefines.str()); 953 } 954