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 /// As these includes are generated by -include arguments the header search 69 /// logic is going to search relatively to the current working directory. 70 static void AddImplicitInclude(MacroBuilder &Builder, StringRef File) { 71 Builder.append(Twine("#include \"") + File + "\""); 72 } 73 74 static void AddImplicitIncludeMacros(MacroBuilder &Builder, StringRef File) { 75 Builder.append(Twine("#__include_macros \"") + File + "\""); 76 // Marker token to stop the __include_macros fetch loop. 77 Builder.append("##"); // ##? 78 } 79 80 /// AddImplicitIncludePTH - Add an implicit \#include using the original file 81 /// used to generate a PTH cache. 82 static void AddImplicitIncludePTH(MacroBuilder &Builder, Preprocessor &PP, 83 StringRef ImplicitIncludePTH) { 84 PTHManager *P = PP.getPTHManager(); 85 // Null check 'P' in the corner case where it couldn't be created. 86 const char *OriginalFile = P ? P->getOriginalSourceFile() : nullptr; 87 88 if (!OriginalFile) { 89 PP.getDiagnostics().Report(diag::err_fe_pth_file_has_no_source_header) 90 << ImplicitIncludePTH; 91 return; 92 } 93 94 AddImplicitInclude(Builder, OriginalFile); 95 } 96 97 /// \brief Add an implicit \#include using the original file used to generate 98 /// a PCH file. 99 static void AddImplicitIncludePCH(MacroBuilder &Builder, Preprocessor &PP, 100 StringRef ImplicitIncludePCH) { 101 std::string OriginalFile = 102 ASTReader::getOriginalSourceFile(ImplicitIncludePCH, PP.getFileManager(), 103 PP.getDiagnostics()); 104 if (OriginalFile.empty()) 105 return; 106 107 AddImplicitInclude(Builder, OriginalFile); 108 } 109 110 /// PickFP - This is used to pick a value based on the FP semantics of the 111 /// specified FP model. 112 template <typename T> 113 static T PickFP(const llvm::fltSemantics *Sem, T IEEESingleVal, 114 T IEEEDoubleVal, T X87DoubleExtendedVal, T PPCDoubleDoubleVal, 115 T IEEEQuadVal) { 116 if (Sem == (const llvm::fltSemantics*)&llvm::APFloat::IEEEsingle) 117 return IEEESingleVal; 118 if (Sem == (const llvm::fltSemantics*)&llvm::APFloat::IEEEdouble) 119 return IEEEDoubleVal; 120 if (Sem == (const llvm::fltSemantics*)&llvm::APFloat::x87DoubleExtended) 121 return X87DoubleExtendedVal; 122 if (Sem == (const llvm::fltSemantics*)&llvm::APFloat::PPCDoubleDouble) 123 return PPCDoubleDoubleVal; 124 assert(Sem == (const llvm::fltSemantics*)&llvm::APFloat::IEEEquad); 125 return IEEEQuadVal; 126 } 127 128 static void DefineFloatMacros(MacroBuilder &Builder, StringRef Prefix, 129 const llvm::fltSemantics *Sem, StringRef Ext) { 130 const char *DenormMin, *Epsilon, *Max, *Min; 131 DenormMin = PickFP(Sem, "1.40129846e-45", "4.9406564584124654e-324", 132 "3.64519953188247460253e-4951", 133 "4.94065645841246544176568792868221e-324", 134 "6.47517511943802511092443895822764655e-4966"); 135 int Digits = PickFP(Sem, 6, 15, 18, 31, 33); 136 Epsilon = PickFP(Sem, "1.19209290e-7", "2.2204460492503131e-16", 137 "1.08420217248550443401e-19", 138 "4.94065645841246544176568792868221e-324", 139 "1.92592994438723585305597794258492732e-34"); 140 int MantissaDigits = PickFP(Sem, 24, 53, 64, 106, 113); 141 int Min10Exp = PickFP(Sem, -37, -307, -4931, -291, -4931); 142 int Max10Exp = PickFP(Sem, 38, 308, 4932, 308, 4932); 143 int MinExp = PickFP(Sem, -125, -1021, -16381, -968, -16381); 144 int MaxExp = PickFP(Sem, 128, 1024, 16384, 1024, 16384); 145 Min = PickFP(Sem, "1.17549435e-38", "2.2250738585072014e-308", 146 "3.36210314311209350626e-4932", 147 "2.00416836000897277799610805135016e-292", 148 "3.36210314311209350626267781732175260e-4932"); 149 Max = PickFP(Sem, "3.40282347e+38", "1.7976931348623157e+308", 150 "1.18973149535723176502e+4932", 151 "1.79769313486231580793728971405301e+308", 152 "1.18973149535723176508575932662800702e+4932"); 153 154 SmallString<32> DefPrefix; 155 DefPrefix = "__"; 156 DefPrefix += Prefix; 157 DefPrefix += "_"; 158 159 Builder.defineMacro(DefPrefix + "DENORM_MIN__", Twine(DenormMin)+Ext); 160 Builder.defineMacro(DefPrefix + "HAS_DENORM__"); 161 Builder.defineMacro(DefPrefix + "DIG__", Twine(Digits)); 162 Builder.defineMacro(DefPrefix + "EPSILON__", Twine(Epsilon)+Ext); 163 Builder.defineMacro(DefPrefix + "HAS_INFINITY__"); 164 Builder.defineMacro(DefPrefix + "HAS_QUIET_NAN__"); 165 Builder.defineMacro(DefPrefix + "MANT_DIG__", Twine(MantissaDigits)); 166 167 Builder.defineMacro(DefPrefix + "MAX_10_EXP__", Twine(Max10Exp)); 168 Builder.defineMacro(DefPrefix + "MAX_EXP__", Twine(MaxExp)); 169 Builder.defineMacro(DefPrefix + "MAX__", Twine(Max)+Ext); 170 171 Builder.defineMacro(DefPrefix + "MIN_10_EXP__","("+Twine(Min10Exp)+")"); 172 Builder.defineMacro(DefPrefix + "MIN_EXP__", "("+Twine(MinExp)+")"); 173 Builder.defineMacro(DefPrefix + "MIN__", Twine(Min)+Ext); 174 } 175 176 177 /// DefineTypeSize - Emit a macro to the predefines buffer that declares a macro 178 /// named MacroName with the max value for a type with width 'TypeWidth' a 179 /// signedness of 'isSigned' and with a value suffix of 'ValSuffix' (e.g. LL). 180 static void DefineTypeSize(const Twine &MacroName, unsigned TypeWidth, 181 StringRef ValSuffix, bool isSigned, 182 MacroBuilder &Builder) { 183 llvm::APInt MaxVal = isSigned ? llvm::APInt::getSignedMaxValue(TypeWidth) 184 : llvm::APInt::getMaxValue(TypeWidth); 185 Builder.defineMacro(MacroName, MaxVal.toString(10, isSigned) + ValSuffix); 186 } 187 188 /// DefineTypeSize - An overloaded helper that uses TargetInfo to determine 189 /// the width, suffix, and signedness of the given type 190 static void DefineTypeSize(const Twine &MacroName, TargetInfo::IntType Ty, 191 const TargetInfo &TI, MacroBuilder &Builder) { 192 DefineTypeSize(MacroName, TI.getTypeWidth(Ty), TI.getTypeConstantSuffix(Ty), 193 TI.isTypeSigned(Ty), Builder); 194 } 195 196 static void DefineFmt(const Twine &Prefix, TargetInfo::IntType Ty, 197 const TargetInfo &TI, MacroBuilder &Builder) { 198 bool IsSigned = TI.isTypeSigned(Ty); 199 StringRef FmtModifier = TI.getTypeFormatModifier(Ty); 200 for (const char *Fmt = IsSigned ? "di" : "ouxX"; *Fmt; ++Fmt) { 201 Builder.defineMacro(Prefix + "_FMT" + Twine(*Fmt) + "__", 202 Twine("\"") + FmtModifier + Twine(*Fmt) + "\""); 203 } 204 } 205 206 static void DefineType(const Twine &MacroName, TargetInfo::IntType Ty, 207 MacroBuilder &Builder) { 208 Builder.defineMacro(MacroName, TargetInfo::getTypeName(Ty)); 209 } 210 211 static void DefineTypeWidth(StringRef MacroName, TargetInfo::IntType Ty, 212 const TargetInfo &TI, MacroBuilder &Builder) { 213 Builder.defineMacro(MacroName, Twine(TI.getTypeWidth(Ty))); 214 } 215 216 static void DefineTypeSizeof(StringRef MacroName, unsigned BitWidth, 217 const TargetInfo &TI, MacroBuilder &Builder) { 218 Builder.defineMacro(MacroName, 219 Twine(BitWidth / TI.getCharWidth())); 220 } 221 222 static void DefineExactWidthIntType(TargetInfo::IntType Ty, 223 const TargetInfo &TI, 224 MacroBuilder &Builder) { 225 int TypeWidth = TI.getTypeWidth(Ty); 226 bool IsSigned = TI.isTypeSigned(Ty); 227 228 // Use the target specified int64 type, when appropriate, so that [u]int64_t 229 // ends up being defined in terms of the correct type. 230 if (TypeWidth == 64) 231 Ty = IsSigned ? TI.getInt64Type() : TI.getUInt64Type(); 232 233 const char *Prefix = IsSigned ? "__INT" : "__UINT"; 234 235 DefineType(Prefix + Twine(TypeWidth) + "_TYPE__", Ty, Builder); 236 DefineFmt(Prefix + Twine(TypeWidth), Ty, TI, Builder); 237 238 StringRef ConstSuffix(TI.getTypeConstantSuffix(Ty)); 239 Builder.defineMacro(Prefix + Twine(TypeWidth) + "_C_SUFFIX__", ConstSuffix); 240 } 241 242 static void DefineExactWidthIntTypeSize(TargetInfo::IntType Ty, 243 const TargetInfo &TI, 244 MacroBuilder &Builder) { 245 int TypeWidth = TI.getTypeWidth(Ty); 246 bool IsSigned = TI.isTypeSigned(Ty); 247 248 // Use the target specified int64 type, when appropriate, so that [u]int64_t 249 // ends up being defined in terms of the correct type. 250 if (TypeWidth == 64) 251 Ty = IsSigned ? TI.getInt64Type() : TI.getUInt64Type(); 252 253 const char *Prefix = IsSigned ? "__INT" : "__UINT"; 254 DefineTypeSize(Prefix + Twine(TypeWidth) + "_MAX__", Ty, TI, Builder); 255 } 256 257 static void DefineLeastWidthIntType(unsigned TypeWidth, bool IsSigned, 258 const TargetInfo &TI, 259 MacroBuilder &Builder) { 260 TargetInfo::IntType Ty = TI.getLeastIntTypeByWidth(TypeWidth, IsSigned); 261 if (Ty == TargetInfo::NoInt) 262 return; 263 264 const char *Prefix = IsSigned ? "__INT_LEAST" : "__UINT_LEAST"; 265 DefineType(Prefix + Twine(TypeWidth) + "_TYPE__", Ty, Builder); 266 DefineTypeSize(Prefix + Twine(TypeWidth) + "_MAX__", Ty, TI, Builder); 267 DefineFmt(Prefix + Twine(TypeWidth), Ty, TI, Builder); 268 } 269 270 static void DefineFastIntType(unsigned TypeWidth, bool IsSigned, 271 const TargetInfo &TI, MacroBuilder &Builder) { 272 // stdint.h currently defines the fast int types as equivalent to the least 273 // types. 274 TargetInfo::IntType Ty = TI.getLeastIntTypeByWidth(TypeWidth, IsSigned); 275 if (Ty == TargetInfo::NoInt) 276 return; 277 278 const char *Prefix = IsSigned ? "__INT_FAST" : "__UINT_FAST"; 279 DefineType(Prefix + Twine(TypeWidth) + "_TYPE__", Ty, Builder); 280 DefineTypeSize(Prefix + Twine(TypeWidth) + "_MAX__", Ty, TI, Builder); 281 282 DefineFmt(Prefix + Twine(TypeWidth), Ty, TI, Builder); 283 } 284 285 286 /// Get the value the ATOMIC_*_LOCK_FREE macro should have for a type with 287 /// the specified properties. 288 static const char *getLockFreeValue(unsigned TypeWidth, unsigned TypeAlign, 289 unsigned InlineWidth) { 290 // Fully-aligned, power-of-2 sizes no larger than the inline 291 // width will be inlined as lock-free operations. 292 if (TypeWidth == TypeAlign && (TypeWidth & (TypeWidth - 1)) == 0 && 293 TypeWidth <= InlineWidth) 294 return "2"; // "always lock free" 295 // We cannot be certain what operations the lib calls might be 296 // able to implement as lock-free on future processors. 297 return "1"; // "sometimes lock free" 298 } 299 300 /// \brief Add definitions required for a smooth interaction between 301 /// Objective-C++ automated reference counting and libstdc++ (4.2). 302 static void AddObjCXXARCLibstdcxxDefines(const LangOptions &LangOpts, 303 MacroBuilder &Builder) { 304 Builder.defineMacro("_GLIBCXX_PREDEFINED_OBJC_ARC_IS_SCALAR"); 305 306 std::string Result; 307 { 308 // Provide specializations for the __is_scalar type trait so that 309 // lifetime-qualified objects are not considered "scalar" types, which 310 // libstdc++ uses as an indicator of the presence of trivial copy, assign, 311 // default-construct, and destruct semantics (none of which hold for 312 // lifetime-qualified objects in ARC). 313 llvm::raw_string_ostream Out(Result); 314 315 Out << "namespace std {\n" 316 << "\n" 317 << "struct __true_type;\n" 318 << "struct __false_type;\n" 319 << "\n"; 320 321 Out << "template<typename _Tp> struct __is_scalar;\n" 322 << "\n"; 323 324 Out << "template<typename _Tp>\n" 325 << "struct __is_scalar<__attribute__((objc_ownership(strong))) _Tp> {\n" 326 << " enum { __value = 0 };\n" 327 << " typedef __false_type __type;\n" 328 << "};\n" 329 << "\n"; 330 331 if (LangOpts.ObjCARCWeak) { 332 Out << "template<typename _Tp>\n" 333 << "struct __is_scalar<__attribute__((objc_ownership(weak))) _Tp> {\n" 334 << " enum { __value = 0 };\n" 335 << " typedef __false_type __type;\n" 336 << "};\n" 337 << "\n"; 338 } 339 340 Out << "template<typename _Tp>\n" 341 << "struct __is_scalar<__attribute__((objc_ownership(autoreleasing)))" 342 << " _Tp> {\n" 343 << " enum { __value = 0 };\n" 344 << " typedef __false_type __type;\n" 345 << "};\n" 346 << "\n"; 347 348 Out << "}\n"; 349 } 350 Builder.append(Result); 351 } 352 353 static void InitializeStandardPredefinedMacros(const TargetInfo &TI, 354 const LangOptions &LangOpts, 355 const FrontendOptions &FEOpts, 356 MacroBuilder &Builder) { 357 if (!LangOpts.MSVCCompat && !LangOpts.TraditionalCPP) 358 Builder.defineMacro("__STDC__"); 359 if (LangOpts.Freestanding) 360 Builder.defineMacro("__STDC_HOSTED__", "0"); 361 else 362 Builder.defineMacro("__STDC_HOSTED__"); 363 364 if (!LangOpts.CPlusPlus) { 365 if (LangOpts.C11) 366 Builder.defineMacro("__STDC_VERSION__", "201112L"); 367 else if (LangOpts.C99) 368 Builder.defineMacro("__STDC_VERSION__", "199901L"); 369 else if (!LangOpts.GNUMode && LangOpts.Digraphs) 370 Builder.defineMacro("__STDC_VERSION__", "199409L"); 371 } else { 372 // FIXME: Use correct value for C++17. 373 if (LangOpts.CPlusPlus1z) 374 Builder.defineMacro("__cplusplus", "201406L"); 375 // C++1y [cpp.predefined]p1: 376 // The name __cplusplus is defined to the value 201402L when compiling a 377 // C++ translation unit. 378 else if (LangOpts.CPlusPlus14) 379 Builder.defineMacro("__cplusplus", "201402L"); 380 // C++11 [cpp.predefined]p1: 381 // The name __cplusplus is defined to the value 201103L when compiling a 382 // C++ translation unit. 383 else if (LangOpts.CPlusPlus11) 384 Builder.defineMacro("__cplusplus", "201103L"); 385 // C++03 [cpp.predefined]p1: 386 // The name __cplusplus is defined to the value 199711L when compiling a 387 // C++ translation unit. 388 else 389 Builder.defineMacro("__cplusplus", "199711L"); 390 } 391 392 // In C11 these are environment macros. In C++11 they are only defined 393 // as part of <cuchar>. To prevent breakage when mixing C and C++ 394 // code, define these macros unconditionally. We can define them 395 // unconditionally, as Clang always uses UTF-16 and UTF-32 for 16-bit 396 // and 32-bit character literals. 397 Builder.defineMacro("__STDC_UTF_16__", "1"); 398 Builder.defineMacro("__STDC_UTF_32__", "1"); 399 400 if (LangOpts.ObjC1) 401 Builder.defineMacro("__OBJC__"); 402 403 // Not "standard" per se, but available even with the -undef flag. 404 if (LangOpts.AsmPreprocessor) 405 Builder.defineMacro("__ASSEMBLER__"); 406 } 407 408 /// Initialize the predefined C++ language feature test macros defined in 409 /// ISO/IEC JTC1/SC22/WG21 (C++) SD-6: "SG10 Feature Test Recommendations". 410 static void InitializeCPlusPlusFeatureTestMacros(const LangOptions &LangOpts, 411 MacroBuilder &Builder) { 412 // C++11 features. 413 if (LangOpts.CPlusPlus11) { 414 Builder.defineMacro("__cpp_unicode_characters", "200704"); 415 Builder.defineMacro("__cpp_raw_strings", "200710"); 416 Builder.defineMacro("__cpp_unicode_literals", "200710"); 417 Builder.defineMacro("__cpp_user_defined_literals", "200809"); 418 Builder.defineMacro("__cpp_lambdas", "200907"); 419 Builder.defineMacro("__cpp_constexpr", 420 LangOpts.CPlusPlus14 ? "201304" : "200704"); 421 Builder.defineMacro("__cpp_static_assert", "200410"); 422 Builder.defineMacro("__cpp_decltype", "200707"); 423 Builder.defineMacro("__cpp_attributes", "200809"); 424 Builder.defineMacro("__cpp_rvalue_references", "200610"); 425 Builder.defineMacro("__cpp_variadic_templates", "200704"); 426 } 427 428 // C++14 features. 429 if (LangOpts.CPlusPlus14) { 430 Builder.defineMacro("__cpp_binary_literals", "201304"); 431 Builder.defineMacro("__cpp_init_captures", "201304"); 432 Builder.defineMacro("__cpp_generic_lambdas", "201304"); 433 Builder.defineMacro("__cpp_decltype_auto", "201304"); 434 Builder.defineMacro("__cpp_return_type_deduction", "201304"); 435 Builder.defineMacro("__cpp_aggregate_nsdmi", "201304"); 436 Builder.defineMacro("__cpp_variable_templates", "201304"); 437 } 438 } 439 440 static void InitializePredefinedMacros(const TargetInfo &TI, 441 const LangOptions &LangOpts, 442 const FrontendOptions &FEOpts, 443 MacroBuilder &Builder) { 444 // Compiler version introspection macros. 445 Builder.defineMacro("__llvm__"); // LLVM Backend 446 Builder.defineMacro("__clang__"); // Clang Frontend 447 #define TOSTR2(X) #X 448 #define TOSTR(X) TOSTR2(X) 449 Builder.defineMacro("__clang_major__", TOSTR(CLANG_VERSION_MAJOR)); 450 Builder.defineMacro("__clang_minor__", TOSTR(CLANG_VERSION_MINOR)); 451 #ifdef CLANG_VERSION_PATCHLEVEL 452 Builder.defineMacro("__clang_patchlevel__", TOSTR(CLANG_VERSION_PATCHLEVEL)); 453 #else 454 Builder.defineMacro("__clang_patchlevel__", "0"); 455 #endif 456 Builder.defineMacro("__clang_version__", 457 "\"" CLANG_VERSION_STRING " " 458 + getClangFullRepositoryVersion() + "\""); 459 #undef TOSTR 460 #undef TOSTR2 461 if (!LangOpts.MSVCCompat) { 462 // Currently claim to be compatible with GCC 4.2.1-5621, but only if we're 463 // not compiling for MSVC compatibility 464 Builder.defineMacro("__GNUC_MINOR__", "2"); 465 Builder.defineMacro("__GNUC_PATCHLEVEL__", "1"); 466 Builder.defineMacro("__GNUC__", "4"); 467 Builder.defineMacro("__GXX_ABI_VERSION", "1002"); 468 } 469 470 // Define macros for the C11 / C++11 memory orderings 471 Builder.defineMacro("__ATOMIC_RELAXED", "0"); 472 Builder.defineMacro("__ATOMIC_CONSUME", "1"); 473 Builder.defineMacro("__ATOMIC_ACQUIRE", "2"); 474 Builder.defineMacro("__ATOMIC_RELEASE", "3"); 475 Builder.defineMacro("__ATOMIC_ACQ_REL", "4"); 476 Builder.defineMacro("__ATOMIC_SEQ_CST", "5"); 477 478 // Support for #pragma redefine_extname (Sun compatibility) 479 Builder.defineMacro("__PRAGMA_REDEFINE_EXTNAME", "1"); 480 481 // As sad as it is, enough software depends on the __VERSION__ for version 482 // checks that it is necessary to report 4.2.1 (the base GCC version we claim 483 // compatibility with) first. 484 Builder.defineMacro("__VERSION__", "\"4.2.1 Compatible " + 485 Twine(getClangFullCPPVersion()) + "\""); 486 487 // Initialize language-specific preprocessor defines. 488 489 // Standard conforming mode? 490 if (!LangOpts.GNUMode && !LangOpts.MSVCCompat) 491 Builder.defineMacro("__STRICT_ANSI__"); 492 493 if (!LangOpts.MSVCCompat && LangOpts.CPlusPlus11) 494 Builder.defineMacro("__GXX_EXPERIMENTAL_CXX0X__"); 495 496 if (LangOpts.ObjC1) { 497 if (LangOpts.ObjCRuntime.isNonFragile()) { 498 Builder.defineMacro("__OBJC2__"); 499 500 if (LangOpts.ObjCExceptions) 501 Builder.defineMacro("OBJC_ZEROCOST_EXCEPTIONS"); 502 } 503 504 if (LangOpts.getGC() != LangOptions::NonGC) 505 Builder.defineMacro("__OBJC_GC__"); 506 507 if (LangOpts.ObjCRuntime.isNeXTFamily()) 508 Builder.defineMacro("__NEXT_RUNTIME__"); 509 510 if (LangOpts.ObjCRuntime.getKind() == ObjCRuntime::ObjFW) { 511 VersionTuple tuple = LangOpts.ObjCRuntime.getVersion(); 512 513 unsigned minor = 0; 514 if (tuple.getMinor().hasValue()) 515 minor = tuple.getMinor().getValue(); 516 517 unsigned subminor = 0; 518 if (tuple.getSubminor().hasValue()) 519 subminor = tuple.getSubminor().getValue(); 520 521 Builder.defineMacro("__OBJFW_RUNTIME_ABI__", 522 Twine(tuple.getMajor() * 10000 + minor * 100 + 523 subminor)); 524 } 525 526 Builder.defineMacro("IBOutlet", "__attribute__((iboutlet))"); 527 Builder.defineMacro("IBOutletCollection(ClassName)", 528 "__attribute__((iboutletcollection(ClassName)))"); 529 Builder.defineMacro("IBAction", "void)__attribute__((ibaction)"); 530 Builder.defineMacro("IBInspectable", ""); 531 Builder.defineMacro("IB_DESIGNABLE", ""); 532 } 533 534 if (LangOpts.CPlusPlus) 535 InitializeCPlusPlusFeatureTestMacros(LangOpts, Builder); 536 537 // darwin_constant_cfstrings controls this. This is also dependent 538 // on other things like the runtime I believe. This is set even for C code. 539 if (!LangOpts.NoConstantCFStrings) 540 Builder.defineMacro("__CONSTANT_CFSTRINGS__"); 541 542 if (LangOpts.ObjC2) 543 Builder.defineMacro("OBJC_NEW_PROPERTIES"); 544 545 if (LangOpts.PascalStrings) 546 Builder.defineMacro("__PASCAL_STRINGS__"); 547 548 if (LangOpts.Blocks) { 549 Builder.defineMacro("__block", "__attribute__((__blocks__(byref)))"); 550 Builder.defineMacro("__BLOCKS__"); 551 } 552 553 if (!LangOpts.MSVCCompat && LangOpts.CXXExceptions) 554 Builder.defineMacro("__EXCEPTIONS"); 555 if (!LangOpts.MSVCCompat && LangOpts.RTTI) 556 Builder.defineMacro("__GXX_RTTI"); 557 if (LangOpts.SjLjExceptions) 558 Builder.defineMacro("__USING_SJLJ_EXCEPTIONS__"); 559 560 if (LangOpts.Deprecated) 561 Builder.defineMacro("__DEPRECATED"); 562 563 if (!LangOpts.MSVCCompat && LangOpts.CPlusPlus) { 564 Builder.defineMacro("__GNUG__", "4"); 565 Builder.defineMacro("__GXX_WEAK__"); 566 Builder.defineMacro("__private_extern__", "extern"); 567 } 568 569 if (LangOpts.MicrosoftExt) { 570 if (LangOpts.WChar) { 571 // wchar_t supported as a keyword. 572 Builder.defineMacro("_WCHAR_T_DEFINED"); 573 Builder.defineMacro("_NATIVE_WCHAR_T_DEFINED"); 574 } 575 } 576 577 if (LangOpts.Optimize) 578 Builder.defineMacro("__OPTIMIZE__"); 579 if (LangOpts.OptimizeSize) 580 Builder.defineMacro("__OPTIMIZE_SIZE__"); 581 582 if (LangOpts.FastMath) 583 Builder.defineMacro("__FAST_MATH__"); 584 585 // Initialize target-specific preprocessor defines. 586 587 // __BYTE_ORDER__ was added in GCC 4.6. It's analogous 588 // to the macro __BYTE_ORDER (no trailing underscores) 589 // from glibc's <endian.h> header. 590 // We don't support the PDP-11 as a target, but include 591 // the define so it can still be compared against. 592 Builder.defineMacro("__ORDER_LITTLE_ENDIAN__", "1234"); 593 Builder.defineMacro("__ORDER_BIG_ENDIAN__", "4321"); 594 Builder.defineMacro("__ORDER_PDP_ENDIAN__", "3412"); 595 if (TI.isBigEndian()) { 596 Builder.defineMacro("__BYTE_ORDER__", "__ORDER_BIG_ENDIAN__"); 597 Builder.defineMacro("__BIG_ENDIAN__"); 598 } else { 599 Builder.defineMacro("__BYTE_ORDER__", "__ORDER_LITTLE_ENDIAN__"); 600 Builder.defineMacro("__LITTLE_ENDIAN__"); 601 } 602 603 if (TI.getPointerWidth(0) == 64 && TI.getLongWidth() == 64 604 && TI.getIntWidth() == 32) { 605 Builder.defineMacro("_LP64"); 606 Builder.defineMacro("__LP64__"); 607 } 608 609 if (TI.getPointerWidth(0) == 32 && TI.getLongWidth() == 32 610 && TI.getIntWidth() == 32) { 611 Builder.defineMacro("_ILP32"); 612 Builder.defineMacro("__ILP32__"); 613 } 614 615 // Define type sizing macros based on the target properties. 616 assert(TI.getCharWidth() == 8 && "Only support 8-bit char so far"); 617 Builder.defineMacro("__CHAR_BIT__", "8"); 618 619 DefineTypeSize("__SCHAR_MAX__", TargetInfo::SignedChar, TI, Builder); 620 DefineTypeSize("__SHRT_MAX__", TargetInfo::SignedShort, TI, Builder); 621 DefineTypeSize("__INT_MAX__", TargetInfo::SignedInt, TI, Builder); 622 DefineTypeSize("__LONG_MAX__", TargetInfo::SignedLong, TI, Builder); 623 DefineTypeSize("__LONG_LONG_MAX__", TargetInfo::SignedLongLong, TI, Builder); 624 DefineTypeSize("__WCHAR_MAX__", TI.getWCharType(), TI, Builder); 625 DefineTypeSize("__INTMAX_MAX__", TI.getIntMaxType(), TI, Builder); 626 DefineTypeSize("__SIZE_MAX__", TI.getSizeType(), TI, Builder); 627 628 if (!LangOpts.MSVCCompat) { 629 DefineTypeSize("__UINTMAX_MAX__", TI.getUIntMaxType(), TI, Builder); 630 DefineTypeSize("__PTRDIFF_MAX__", TI.getPtrDiffType(0), TI, Builder); 631 DefineTypeSize("__INTPTR_MAX__", TI.getIntPtrType(), TI, Builder); 632 DefineTypeSize("__UINTPTR_MAX__", TI.getUIntPtrType(), TI, Builder); 633 } 634 635 DefineTypeSizeof("__SIZEOF_DOUBLE__", TI.getDoubleWidth(), TI, Builder); 636 DefineTypeSizeof("__SIZEOF_FLOAT__", TI.getFloatWidth(), TI, Builder); 637 DefineTypeSizeof("__SIZEOF_INT__", TI.getIntWidth(), TI, Builder); 638 DefineTypeSizeof("__SIZEOF_LONG__", TI.getLongWidth(), TI, Builder); 639 DefineTypeSizeof("__SIZEOF_LONG_DOUBLE__",TI.getLongDoubleWidth(),TI,Builder); 640 DefineTypeSizeof("__SIZEOF_LONG_LONG__", TI.getLongLongWidth(), TI, Builder); 641 DefineTypeSizeof("__SIZEOF_POINTER__", TI.getPointerWidth(0), TI, Builder); 642 DefineTypeSizeof("__SIZEOF_SHORT__", TI.getShortWidth(), TI, Builder); 643 DefineTypeSizeof("__SIZEOF_PTRDIFF_T__", 644 TI.getTypeWidth(TI.getPtrDiffType(0)), TI, Builder); 645 DefineTypeSizeof("__SIZEOF_SIZE_T__", 646 TI.getTypeWidth(TI.getSizeType()), TI, Builder); 647 DefineTypeSizeof("__SIZEOF_WCHAR_T__", 648 TI.getTypeWidth(TI.getWCharType()), TI, Builder); 649 DefineTypeSizeof("__SIZEOF_WINT_T__", 650 TI.getTypeWidth(TI.getWIntType()), TI, Builder); 651 if (TI.hasInt128Type()) 652 DefineTypeSizeof("__SIZEOF_INT128__", 128, TI, Builder); 653 654 DefineType("__INTMAX_TYPE__", TI.getIntMaxType(), Builder); 655 DefineFmt("__INTMAX", TI.getIntMaxType(), TI, Builder); 656 Builder.defineMacro("__INTMAX_C_SUFFIX__", 657 TI.getTypeConstantSuffix(TI.getIntMaxType())); 658 DefineType("__UINTMAX_TYPE__", TI.getUIntMaxType(), Builder); 659 DefineFmt("__UINTMAX", TI.getUIntMaxType(), TI, Builder); 660 Builder.defineMacro("__UINTMAX_C_SUFFIX__", 661 TI.getTypeConstantSuffix(TI.getUIntMaxType())); 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 DefineTypeSize("__SIG_ATOMIC_MAX__", TI.getSigAtomicType(), TI, Builder); 678 DefineType("__CHAR16_TYPE__", TI.getChar16Type(), Builder); 679 DefineType("__CHAR32_TYPE__", TI.getChar32Type(), Builder); 680 681 if (!LangOpts.MSVCCompat) { 682 DefineTypeWidth("__UINTMAX_WIDTH__", TI.getUIntMaxType(), TI, Builder); 683 DefineType("__UINTPTR_TYPE__", TI.getUIntPtrType(), Builder); 684 DefineFmt("__UINTPTR", TI.getUIntPtrType(), TI, Builder); 685 DefineTypeWidth("__UINTPTR_WIDTH__", TI.getUIntPtrType(), TI, Builder); 686 } 687 688 DefineFloatMacros(Builder, "FLT", &TI.getFloatFormat(), "F"); 689 DefineFloatMacros(Builder, "DBL", &TI.getDoubleFormat(), ""); 690 DefineFloatMacros(Builder, "LDBL", &TI.getLongDoubleFormat(), "L"); 691 692 // Define a __POINTER_WIDTH__ macro for stdint.h. 693 Builder.defineMacro("__POINTER_WIDTH__", 694 Twine((int)TI.getPointerWidth(0))); 695 696 if (!LangOpts.CharIsSigned) 697 Builder.defineMacro("__CHAR_UNSIGNED__"); 698 699 if (!TargetInfo::isTypeSigned(TI.getWCharType())) 700 Builder.defineMacro("__WCHAR_UNSIGNED__"); 701 702 if (!TargetInfo::isTypeSigned(TI.getWIntType())) 703 Builder.defineMacro("__WINT_UNSIGNED__"); 704 705 // Define exact-width integer types for stdint.h 706 DefineExactWidthIntType(TargetInfo::SignedChar, TI, Builder); 707 708 if (TI.getShortWidth() > TI.getCharWidth()) 709 DefineExactWidthIntType(TargetInfo::SignedShort, TI, Builder); 710 711 if (TI.getIntWidth() > TI.getShortWidth()) 712 DefineExactWidthIntType(TargetInfo::SignedInt, TI, Builder); 713 714 if (TI.getLongWidth() > TI.getIntWidth()) 715 DefineExactWidthIntType(TargetInfo::SignedLong, TI, Builder); 716 717 if (TI.getLongLongWidth() > TI.getLongWidth()) 718 DefineExactWidthIntType(TargetInfo::SignedLongLong, TI, Builder); 719 720 if (!LangOpts.MSVCCompat) { 721 DefineExactWidthIntType(TargetInfo::UnsignedChar, TI, Builder); 722 DefineExactWidthIntTypeSize(TargetInfo::UnsignedChar, TI, Builder); 723 DefineExactWidthIntTypeSize(TargetInfo::SignedChar, TI, Builder); 724 725 if (TI.getShortWidth() > TI.getCharWidth()) { 726 DefineExactWidthIntType(TargetInfo::UnsignedShort, TI, Builder); 727 DefineExactWidthIntTypeSize(TargetInfo::UnsignedShort, TI, Builder); 728 DefineExactWidthIntTypeSize(TargetInfo::SignedShort, TI, Builder); 729 } 730 731 if (TI.getIntWidth() > TI.getShortWidth()) { 732 DefineExactWidthIntType(TargetInfo::UnsignedInt, TI, Builder); 733 DefineExactWidthIntTypeSize(TargetInfo::UnsignedInt, TI, Builder); 734 DefineExactWidthIntTypeSize(TargetInfo::SignedInt, TI, Builder); 735 } 736 737 if (TI.getLongWidth() > TI.getIntWidth()) { 738 DefineExactWidthIntType(TargetInfo::UnsignedLong, TI, Builder); 739 DefineExactWidthIntTypeSize(TargetInfo::UnsignedLong, TI, Builder); 740 DefineExactWidthIntTypeSize(TargetInfo::SignedLong, TI, Builder); 741 } 742 743 if (TI.getLongLongWidth() > TI.getLongWidth()) { 744 DefineExactWidthIntType(TargetInfo::UnsignedLongLong, TI, Builder); 745 DefineExactWidthIntTypeSize(TargetInfo::UnsignedLongLong, TI, Builder); 746 DefineExactWidthIntTypeSize(TargetInfo::SignedLongLong, TI, Builder); 747 } 748 749 DefineLeastWidthIntType(8, true, TI, Builder); 750 DefineLeastWidthIntType(8, false, TI, Builder); 751 DefineLeastWidthIntType(16, true, TI, Builder); 752 DefineLeastWidthIntType(16, false, TI, Builder); 753 DefineLeastWidthIntType(32, true, TI, Builder); 754 DefineLeastWidthIntType(32, false, TI, Builder); 755 DefineLeastWidthIntType(64, true, TI, Builder); 756 DefineLeastWidthIntType(64, false, TI, Builder); 757 758 DefineFastIntType(8, true, TI, Builder); 759 DefineFastIntType(8, false, TI, Builder); 760 DefineFastIntType(16, true, TI, Builder); 761 DefineFastIntType(16, false, TI, Builder); 762 DefineFastIntType(32, true, TI, Builder); 763 DefineFastIntType(32, false, TI, Builder); 764 DefineFastIntType(64, true, TI, Builder); 765 DefineFastIntType(64, false, TI, Builder); 766 } 767 768 if (const char *Prefix = TI.getUserLabelPrefix()) 769 Builder.defineMacro("__USER_LABEL_PREFIX__", Prefix); 770 771 if (LangOpts.FastMath || LangOpts.FiniteMathOnly) 772 Builder.defineMacro("__FINITE_MATH_ONLY__", "1"); 773 else 774 Builder.defineMacro("__FINITE_MATH_ONLY__", "0"); 775 776 if (!LangOpts.MSVCCompat) { 777 if (LangOpts.GNUInline) 778 Builder.defineMacro("__GNUC_GNU_INLINE__"); 779 else 780 Builder.defineMacro("__GNUC_STDC_INLINE__"); 781 782 // The value written by __atomic_test_and_set. 783 // FIXME: This is target-dependent. 784 Builder.defineMacro("__GCC_ATOMIC_TEST_AND_SET_TRUEVAL", "1"); 785 786 // Used by libstdc++ to implement ATOMIC_<foo>_LOCK_FREE. 787 unsigned InlineWidthBits = TI.getMaxAtomicInlineWidth(); 788 #define DEFINE_LOCK_FREE_MACRO(TYPE, Type) \ 789 Builder.defineMacro("__GCC_ATOMIC_" #TYPE "_LOCK_FREE", \ 790 getLockFreeValue(TI.get##Type##Width(), \ 791 TI.get##Type##Align(), \ 792 InlineWidthBits)); 793 DEFINE_LOCK_FREE_MACRO(BOOL, Bool); 794 DEFINE_LOCK_FREE_MACRO(CHAR, Char); 795 DEFINE_LOCK_FREE_MACRO(CHAR16_T, Char16); 796 DEFINE_LOCK_FREE_MACRO(CHAR32_T, Char32); 797 DEFINE_LOCK_FREE_MACRO(WCHAR_T, WChar); 798 DEFINE_LOCK_FREE_MACRO(SHORT, Short); 799 DEFINE_LOCK_FREE_MACRO(INT, Int); 800 DEFINE_LOCK_FREE_MACRO(LONG, Long); 801 DEFINE_LOCK_FREE_MACRO(LLONG, LongLong); 802 Builder.defineMacro("__GCC_ATOMIC_POINTER_LOCK_FREE", 803 getLockFreeValue(TI.getPointerWidth(0), 804 TI.getPointerAlign(0), 805 InlineWidthBits)); 806 #undef DEFINE_LOCK_FREE_MACRO 807 } 808 809 if (LangOpts.NoInlineDefine) 810 Builder.defineMacro("__NO_INLINE__"); 811 812 if (unsigned PICLevel = LangOpts.PICLevel) { 813 Builder.defineMacro("__PIC__", Twine(PICLevel)); 814 Builder.defineMacro("__pic__", Twine(PICLevel)); 815 } 816 if (unsigned PIELevel = LangOpts.PIELevel) { 817 Builder.defineMacro("__PIE__", Twine(PIELevel)); 818 Builder.defineMacro("__pie__", Twine(PIELevel)); 819 } 820 821 // Macros to control C99 numerics and <float.h> 822 Builder.defineMacro("__FLT_EVAL_METHOD__", Twine(TI.getFloatEvalMethod())); 823 Builder.defineMacro("__FLT_RADIX__", "2"); 824 int Dig = PickFP(&TI.getLongDoubleFormat(), -1/*FIXME*/, 17, 21, 33, 36); 825 Builder.defineMacro("__DECIMAL_DIG__", Twine(Dig)); 826 827 if (LangOpts.getStackProtector() == LangOptions::SSPOn) 828 Builder.defineMacro("__SSP__"); 829 else if (LangOpts.getStackProtector() == LangOptions::SSPStrong) 830 Builder.defineMacro("__SSP_STRONG__", "2"); 831 else if (LangOpts.getStackProtector() == LangOptions::SSPReq) 832 Builder.defineMacro("__SSP_ALL__", "3"); 833 834 if (FEOpts.ProgramAction == frontend::RewriteObjC) 835 Builder.defineMacro("__weak", "__attribute__((objc_gc(weak)))"); 836 837 // Define a macro that exists only when using the static analyzer. 838 if (FEOpts.ProgramAction == frontend::RunAnalysis) 839 Builder.defineMacro("__clang_analyzer__"); 840 841 if (LangOpts.FastRelaxedMath) 842 Builder.defineMacro("__FAST_RELAXED_MATH__"); 843 844 if (LangOpts.ObjCAutoRefCount) { 845 Builder.defineMacro("__weak", "__attribute__((objc_ownership(weak)))"); 846 Builder.defineMacro("__strong", "__attribute__((objc_ownership(strong)))"); 847 Builder.defineMacro("__autoreleasing", 848 "__attribute__((objc_ownership(autoreleasing)))"); 849 Builder.defineMacro("__unsafe_unretained", 850 "__attribute__((objc_ownership(none)))"); 851 } 852 853 // OpenMP definition 854 if (LangOpts.OpenMP) { 855 // OpenMP 2.2: 856 // In implementations that support a preprocessor, the _OPENMP 857 // macro name is defined to have the decimal value yyyymm where 858 // yyyy and mm are the year and the month designations of the 859 // version of the OpenMP API that the implementation support. 860 Builder.defineMacro("_OPENMP", "201307"); 861 } 862 863 // Get other target #defines. 864 TI.getTargetDefines(LangOpts, Builder); 865 } 866 867 /// InitializePreprocessor - Initialize the preprocessor getting it and the 868 /// environment ready to process a single file. This returns true on error. 869 /// 870 void clang::InitializePreprocessor(Preprocessor &PP, 871 const PreprocessorOptions &InitOpts, 872 const FrontendOptions &FEOpts) { 873 const LangOptions &LangOpts = PP.getLangOpts(); 874 std::string PredefineBuffer; 875 PredefineBuffer.reserve(4080); 876 llvm::raw_string_ostream Predefines(PredefineBuffer); 877 MacroBuilder Builder(Predefines); 878 879 // Emit line markers for various builtin sections of the file. We don't do 880 // this in asm preprocessor mode, because "# 4" is not a line marker directive 881 // in this mode. 882 if (!PP.getLangOpts().AsmPreprocessor) 883 Builder.append("# 1 \"<built-in>\" 3"); 884 885 // Install things like __POWERPC__, __GNUC__, etc into the macro table. 886 if (InitOpts.UsePredefines) { 887 InitializePredefinedMacros(PP.getTargetInfo(), LangOpts, FEOpts, Builder); 888 889 // Install definitions to make Objective-C++ ARC work well with various 890 // C++ Standard Library implementations. 891 if (LangOpts.ObjC1 && LangOpts.CPlusPlus && LangOpts.ObjCAutoRefCount) { 892 switch (InitOpts.ObjCXXARCStandardLibrary) { 893 case ARCXX_nolib: 894 case ARCXX_libcxx: 895 break; 896 897 case ARCXX_libstdcxx: 898 AddObjCXXARCLibstdcxxDefines(LangOpts, Builder); 899 break; 900 } 901 } 902 } 903 904 // Even with predefines off, some macros are still predefined. 905 // These should all be defined in the preprocessor according to the 906 // current language configuration. 907 InitializeStandardPredefinedMacros(PP.getTargetInfo(), PP.getLangOpts(), 908 FEOpts, Builder); 909 910 // Add on the predefines from the driver. Wrap in a #line directive to report 911 // that they come from the command line. 912 if (!PP.getLangOpts().AsmPreprocessor) 913 Builder.append("# 1 \"<command line>\" 1"); 914 915 // Process #define's and #undef's in the order they are given. 916 for (unsigned i = 0, e = InitOpts.Macros.size(); i != e; ++i) { 917 if (InitOpts.Macros[i].second) // isUndef 918 Builder.undefineMacro(InitOpts.Macros[i].first); 919 else 920 DefineBuiltinMacro(Builder, InitOpts.Macros[i].first, 921 PP.getDiagnostics()); 922 } 923 924 // If -imacros are specified, include them now. These are processed before 925 // any -include directives. 926 for (unsigned i = 0, e = InitOpts.MacroIncludes.size(); i != e; ++i) 927 AddImplicitIncludeMacros(Builder, InitOpts.MacroIncludes[i]); 928 929 // Process -include-pch/-include-pth directives. 930 if (!InitOpts.ImplicitPCHInclude.empty()) 931 AddImplicitIncludePCH(Builder, PP, InitOpts.ImplicitPCHInclude); 932 if (!InitOpts.ImplicitPTHInclude.empty()) 933 AddImplicitIncludePTH(Builder, PP, InitOpts.ImplicitPTHInclude); 934 935 // Process -include directives. 936 for (unsigned i = 0, e = InitOpts.Includes.size(); i != e; ++i) { 937 const std::string &Path = InitOpts.Includes[i]; 938 AddImplicitInclude(Builder, Path); 939 } 940 941 // Exit the command line and go back to <built-in> (2 is LC_LEAVE). 942 if (!PP.getLangOpts().AsmPreprocessor) 943 Builder.append("# 1 \"<built-in>\" 2"); 944 945 // Instruct the preprocessor to skip the preamble. 946 PP.setSkipMainFilePreamble(InitOpts.PrecompiledPreambleBytes.first, 947 InitOpts.PrecompiledPreambleBytes.second); 948 949 // Copy PredefinedBuffer into the Preprocessor. 950 PP.setPredefines(Predefines.str()); 951 } 952