1 //===- CompilerInvocation.cpp ---------------------------------------------===// 2 // 3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 4 // See https://llvm.org/LICENSE.txt for license information. 5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 6 // 7 //===----------------------------------------------------------------------===// 8 9 #include "clang/Frontend/CompilerInvocation.h" 10 #include "TestModuleFileExtension.h" 11 #include "clang/Basic/Builtins.h" 12 #include "clang/Basic/CharInfo.h" 13 #include "clang/Basic/CodeGenOptions.h" 14 #include "clang/Basic/CommentOptions.h" 15 #include "clang/Basic/DebugInfoOptions.h" 16 #include "clang/Basic/Diagnostic.h" 17 #include "clang/Basic/DiagnosticDriver.h" 18 #include "clang/Basic/DiagnosticOptions.h" 19 #include "clang/Basic/FileSystemOptions.h" 20 #include "clang/Basic/LLVM.h" 21 #include "clang/Basic/LangOptions.h" 22 #include "clang/Basic/LangStandard.h" 23 #include "clang/Basic/ObjCRuntime.h" 24 #include "clang/Basic/Sanitizers.h" 25 #include "clang/Basic/SourceLocation.h" 26 #include "clang/Basic/TargetOptions.h" 27 #include "clang/Basic/Version.h" 28 #include "clang/Basic/Visibility.h" 29 #include "clang/Basic/XRayInstr.h" 30 #include "clang/Config/config.h" 31 #include "clang/Driver/Driver.h" 32 #include "clang/Driver/DriverDiagnostic.h" 33 #include "clang/Driver/Options.h" 34 #include "clang/Frontend/CommandLineSourceLoc.h" 35 #include "clang/Frontend/DependencyOutputOptions.h" 36 #include "clang/Frontend/FrontendDiagnostic.h" 37 #include "clang/Frontend/FrontendOptions.h" 38 #include "clang/Frontend/FrontendPluginRegistry.h" 39 #include "clang/Frontend/MigratorOptions.h" 40 #include "clang/Frontend/PreprocessorOutputOptions.h" 41 #include "clang/Frontend/TextDiagnosticBuffer.h" 42 #include "clang/Frontend/Utils.h" 43 #include "clang/Lex/HeaderSearchOptions.h" 44 #include "clang/Lex/PreprocessorOptions.h" 45 #include "clang/Sema/CodeCompleteOptions.h" 46 #include "clang/Serialization/ASTBitCodes.h" 47 #include "clang/Serialization/ModuleFileExtension.h" 48 #include "clang/StaticAnalyzer/Core/AnalyzerOptions.h" 49 #include "llvm/ADT/APInt.h" 50 #include "llvm/ADT/ArrayRef.h" 51 #include "llvm/ADT/CachedHashString.h" 52 #include "llvm/ADT/DenseSet.h" 53 #include "llvm/ADT/FloatingPointMode.h" 54 #include "llvm/ADT/Hashing.h" 55 #include "llvm/ADT/None.h" 56 #include "llvm/ADT/Optional.h" 57 #include "llvm/ADT/STLExtras.h" 58 #include "llvm/ADT/SmallString.h" 59 #include "llvm/ADT/SmallVector.h" 60 #include "llvm/ADT/StringRef.h" 61 #include "llvm/ADT/StringSwitch.h" 62 #include "llvm/ADT/Triple.h" 63 #include "llvm/ADT/Twine.h" 64 #include "llvm/Config/llvm-config.h" 65 #include "llvm/IR/DebugInfoMetadata.h" 66 #include "llvm/Linker/Linker.h" 67 #include "llvm/MC/MCTargetOptions.h" 68 #include "llvm/Option/Arg.h" 69 #include "llvm/Option/ArgList.h" 70 #include "llvm/Option/OptSpecifier.h" 71 #include "llvm/Option/OptTable.h" 72 #include "llvm/Option/Option.h" 73 #include "llvm/ProfileData/InstrProfReader.h" 74 #include "llvm/Remarks/HotnessThresholdParser.h" 75 #include "llvm/Support/CodeGen.h" 76 #include "llvm/Support/Compiler.h" 77 #include "llvm/Support/Error.h" 78 #include "llvm/Support/ErrorHandling.h" 79 #include "llvm/Support/ErrorOr.h" 80 #include "llvm/Support/FileSystem.h" 81 #include "llvm/Support/HashBuilder.h" 82 #include "llvm/Support/Host.h" 83 #include "llvm/Support/MathExtras.h" 84 #include "llvm/Support/MemoryBuffer.h" 85 #include "llvm/Support/Path.h" 86 #include "llvm/Support/Process.h" 87 #include "llvm/Support/Regex.h" 88 #include "llvm/Support/VersionTuple.h" 89 #include "llvm/Support/VirtualFileSystem.h" 90 #include "llvm/Support/raw_ostream.h" 91 #include "llvm/Target/TargetOptions.h" 92 #include <algorithm> 93 #include <atomic> 94 #include <cassert> 95 #include <cstddef> 96 #include <cstring> 97 #include <memory> 98 #include <string> 99 #include <tuple> 100 #include <type_traits> 101 #include <utility> 102 #include <vector> 103 104 using namespace clang; 105 using namespace driver; 106 using namespace options; 107 using namespace llvm::opt; 108 109 //===----------------------------------------------------------------------===// 110 // Initialization. 111 //===----------------------------------------------------------------------===// 112 113 CompilerInvocationRefBase::CompilerInvocationRefBase() 114 : LangOpts(new LangOptions()), TargetOpts(new TargetOptions()), 115 DiagnosticOpts(new DiagnosticOptions()), 116 HeaderSearchOpts(new HeaderSearchOptions()), 117 PreprocessorOpts(new PreprocessorOptions()), 118 AnalyzerOpts(new AnalyzerOptions()) {} 119 120 CompilerInvocationRefBase::CompilerInvocationRefBase( 121 const CompilerInvocationRefBase &X) 122 : LangOpts(new LangOptions(*X.getLangOpts())), 123 TargetOpts(new TargetOptions(X.getTargetOpts())), 124 DiagnosticOpts(new DiagnosticOptions(X.getDiagnosticOpts())), 125 HeaderSearchOpts(new HeaderSearchOptions(X.getHeaderSearchOpts())), 126 PreprocessorOpts(new PreprocessorOptions(X.getPreprocessorOpts())), 127 AnalyzerOpts(new AnalyzerOptions(*X.getAnalyzerOpts())) {} 128 129 CompilerInvocationRefBase::CompilerInvocationRefBase( 130 CompilerInvocationRefBase &&X) = default; 131 132 CompilerInvocationRefBase & 133 CompilerInvocationRefBase::operator=(CompilerInvocationRefBase X) { 134 LangOpts.swap(X.LangOpts); 135 TargetOpts.swap(X.TargetOpts); 136 DiagnosticOpts.swap(X.DiagnosticOpts); 137 HeaderSearchOpts.swap(X.HeaderSearchOpts); 138 PreprocessorOpts.swap(X.PreprocessorOpts); 139 AnalyzerOpts.swap(X.AnalyzerOpts); 140 return *this; 141 } 142 143 CompilerInvocationRefBase & 144 CompilerInvocationRefBase::operator=(CompilerInvocationRefBase &&X) = default; 145 146 CompilerInvocationRefBase::~CompilerInvocationRefBase() = default; 147 148 //===----------------------------------------------------------------------===// 149 // Normalizers 150 //===----------------------------------------------------------------------===// 151 152 #define SIMPLE_ENUM_VALUE_TABLE 153 #include "clang/Driver/Options.inc" 154 #undef SIMPLE_ENUM_VALUE_TABLE 155 156 static llvm::Optional<bool> normalizeSimpleFlag(OptSpecifier Opt, 157 unsigned TableIndex, 158 const ArgList &Args, 159 DiagnosticsEngine &Diags) { 160 if (Args.hasArg(Opt)) 161 return true; 162 return None; 163 } 164 165 static Optional<bool> normalizeSimpleNegativeFlag(OptSpecifier Opt, unsigned, 166 const ArgList &Args, 167 DiagnosticsEngine &) { 168 if (Args.hasArg(Opt)) 169 return false; 170 return None; 171 } 172 173 /// The tblgen-erated code passes in a fifth parameter of an arbitrary type, but 174 /// denormalizeSimpleFlags never looks at it. Avoid bloating compile-time with 175 /// unnecessary template instantiations and just ignore it with a variadic 176 /// argument. 177 static void denormalizeSimpleFlag(SmallVectorImpl<const char *> &Args, 178 const char *Spelling, 179 CompilerInvocation::StringAllocator, 180 Option::OptionClass, unsigned, /*T*/...) { 181 Args.push_back(Spelling); 182 } 183 184 template <typename T> static constexpr bool is_uint64_t_convertible() { 185 return !std::is_same<T, uint64_t>::value && 186 llvm::is_integral_or_enum<T>::value; 187 } 188 189 template <typename T, 190 std::enable_if_t<!is_uint64_t_convertible<T>(), bool> = false> 191 static auto makeFlagToValueNormalizer(T Value) { 192 return [Value](OptSpecifier Opt, unsigned, const ArgList &Args, 193 DiagnosticsEngine &) -> Optional<T> { 194 if (Args.hasArg(Opt)) 195 return Value; 196 return None; 197 }; 198 } 199 200 template <typename T, 201 std::enable_if_t<is_uint64_t_convertible<T>(), bool> = false> 202 static auto makeFlagToValueNormalizer(T Value) { 203 return makeFlagToValueNormalizer(uint64_t(Value)); 204 } 205 206 static auto makeBooleanOptionNormalizer(bool Value, bool OtherValue, 207 OptSpecifier OtherOpt) { 208 return [Value, OtherValue, OtherOpt](OptSpecifier Opt, unsigned, 209 const ArgList &Args, 210 DiagnosticsEngine &) -> Optional<bool> { 211 if (const Arg *A = Args.getLastArg(Opt, OtherOpt)) { 212 return A->getOption().matches(Opt) ? Value : OtherValue; 213 } 214 return None; 215 }; 216 } 217 218 static auto makeBooleanOptionDenormalizer(bool Value) { 219 return [Value](SmallVectorImpl<const char *> &Args, const char *Spelling, 220 CompilerInvocation::StringAllocator, Option::OptionClass, 221 unsigned, bool KeyPath) { 222 if (KeyPath == Value) 223 Args.push_back(Spelling); 224 }; 225 } 226 227 static void denormalizeStringImpl(SmallVectorImpl<const char *> &Args, 228 const char *Spelling, 229 CompilerInvocation::StringAllocator SA, 230 Option::OptionClass OptClass, unsigned, 231 const Twine &Value) { 232 switch (OptClass) { 233 case Option::SeparateClass: 234 case Option::JoinedOrSeparateClass: 235 case Option::JoinedAndSeparateClass: 236 Args.push_back(Spelling); 237 Args.push_back(SA(Value)); 238 break; 239 case Option::JoinedClass: 240 case Option::CommaJoinedClass: 241 Args.push_back(SA(Twine(Spelling) + Value)); 242 break; 243 default: 244 llvm_unreachable("Cannot denormalize an option with option class " 245 "incompatible with string denormalization."); 246 } 247 } 248 249 template <typename T> 250 static void 251 denormalizeString(SmallVectorImpl<const char *> &Args, const char *Spelling, 252 CompilerInvocation::StringAllocator SA, 253 Option::OptionClass OptClass, unsigned TableIndex, T Value) { 254 denormalizeStringImpl(Args, Spelling, SA, OptClass, TableIndex, Twine(Value)); 255 } 256 257 static Optional<SimpleEnumValue> 258 findValueTableByName(const SimpleEnumValueTable &Table, StringRef Name) { 259 for (int I = 0, E = Table.Size; I != E; ++I) 260 if (Name == Table.Table[I].Name) 261 return Table.Table[I]; 262 263 return None; 264 } 265 266 static Optional<SimpleEnumValue> 267 findValueTableByValue(const SimpleEnumValueTable &Table, unsigned Value) { 268 for (int I = 0, E = Table.Size; I != E; ++I) 269 if (Value == Table.Table[I].Value) 270 return Table.Table[I]; 271 272 return None; 273 } 274 275 static llvm::Optional<unsigned> normalizeSimpleEnum(OptSpecifier Opt, 276 unsigned TableIndex, 277 const ArgList &Args, 278 DiagnosticsEngine &Diags) { 279 assert(TableIndex < SimpleEnumValueTablesSize); 280 const SimpleEnumValueTable &Table = SimpleEnumValueTables[TableIndex]; 281 282 auto *Arg = Args.getLastArg(Opt); 283 if (!Arg) 284 return None; 285 286 StringRef ArgValue = Arg->getValue(); 287 if (auto MaybeEnumVal = findValueTableByName(Table, ArgValue)) 288 return MaybeEnumVal->Value; 289 290 Diags.Report(diag::err_drv_invalid_value) 291 << Arg->getAsString(Args) << ArgValue; 292 return None; 293 } 294 295 static void denormalizeSimpleEnumImpl(SmallVectorImpl<const char *> &Args, 296 const char *Spelling, 297 CompilerInvocation::StringAllocator SA, 298 Option::OptionClass OptClass, 299 unsigned TableIndex, unsigned Value) { 300 assert(TableIndex < SimpleEnumValueTablesSize); 301 const SimpleEnumValueTable &Table = SimpleEnumValueTables[TableIndex]; 302 if (auto MaybeEnumVal = findValueTableByValue(Table, Value)) { 303 denormalizeString(Args, Spelling, SA, OptClass, TableIndex, 304 MaybeEnumVal->Name); 305 } else { 306 llvm_unreachable("The simple enum value was not correctly defined in " 307 "the tablegen option description"); 308 } 309 } 310 311 template <typename T> 312 static void denormalizeSimpleEnum(SmallVectorImpl<const char *> &Args, 313 const char *Spelling, 314 CompilerInvocation::StringAllocator SA, 315 Option::OptionClass OptClass, 316 unsigned TableIndex, T Value) { 317 return denormalizeSimpleEnumImpl(Args, Spelling, SA, OptClass, TableIndex, 318 static_cast<unsigned>(Value)); 319 } 320 321 static Optional<std::string> normalizeString(OptSpecifier Opt, int TableIndex, 322 const ArgList &Args, 323 DiagnosticsEngine &Diags) { 324 auto *Arg = Args.getLastArg(Opt); 325 if (!Arg) 326 return None; 327 return std::string(Arg->getValue()); 328 } 329 330 template <typename IntTy> 331 static Optional<IntTy> normalizeStringIntegral(OptSpecifier Opt, int, 332 const ArgList &Args, 333 DiagnosticsEngine &Diags) { 334 auto *Arg = Args.getLastArg(Opt); 335 if (!Arg) 336 return None; 337 IntTy Res; 338 if (StringRef(Arg->getValue()).getAsInteger(0, Res)) { 339 Diags.Report(diag::err_drv_invalid_int_value) 340 << Arg->getAsString(Args) << Arg->getValue(); 341 return None; 342 } 343 return Res; 344 } 345 346 static Optional<std::vector<std::string>> 347 normalizeStringVector(OptSpecifier Opt, int, const ArgList &Args, 348 DiagnosticsEngine &) { 349 return Args.getAllArgValues(Opt); 350 } 351 352 static void denormalizeStringVector(SmallVectorImpl<const char *> &Args, 353 const char *Spelling, 354 CompilerInvocation::StringAllocator SA, 355 Option::OptionClass OptClass, 356 unsigned TableIndex, 357 const std::vector<std::string> &Values) { 358 switch (OptClass) { 359 case Option::CommaJoinedClass: { 360 std::string CommaJoinedValue; 361 if (!Values.empty()) { 362 CommaJoinedValue.append(Values.front()); 363 for (const std::string &Value : llvm::drop_begin(Values, 1)) { 364 CommaJoinedValue.append(","); 365 CommaJoinedValue.append(Value); 366 } 367 } 368 denormalizeString(Args, Spelling, SA, Option::OptionClass::JoinedClass, 369 TableIndex, CommaJoinedValue); 370 break; 371 } 372 case Option::JoinedClass: 373 case Option::SeparateClass: 374 case Option::JoinedOrSeparateClass: 375 for (const std::string &Value : Values) 376 denormalizeString(Args, Spelling, SA, OptClass, TableIndex, Value); 377 break; 378 default: 379 llvm_unreachable("Cannot denormalize an option with option class " 380 "incompatible with string vector denormalization."); 381 } 382 } 383 384 static Optional<std::string> normalizeTriple(OptSpecifier Opt, int TableIndex, 385 const ArgList &Args, 386 DiagnosticsEngine &Diags) { 387 auto *Arg = Args.getLastArg(Opt); 388 if (!Arg) 389 return None; 390 return llvm::Triple::normalize(Arg->getValue()); 391 } 392 393 template <typename T, typename U> 394 static T mergeForwardValue(T KeyPath, U Value) { 395 return static_cast<T>(Value); 396 } 397 398 template <typename T, typename U> static T mergeMaskValue(T KeyPath, U Value) { 399 return KeyPath | Value; 400 } 401 402 template <typename T> static T extractForwardValue(T KeyPath) { 403 return KeyPath; 404 } 405 406 template <typename T, typename U, U Value> 407 static T extractMaskValue(T KeyPath) { 408 return ((KeyPath & Value) == Value) ? static_cast<T>(Value) : T(); 409 } 410 411 #define PARSE_OPTION_WITH_MARSHALLING( \ 412 ARGS, DIAGS, ID, FLAGS, PARAM, SHOULD_PARSE, KEYPATH, DEFAULT_VALUE, \ 413 IMPLIED_CHECK, IMPLIED_VALUE, NORMALIZER, MERGER, TABLE_INDEX) \ 414 if ((FLAGS)&options::CC1Option) { \ 415 KEYPATH = MERGER(KEYPATH, DEFAULT_VALUE); \ 416 if (IMPLIED_CHECK) \ 417 KEYPATH = MERGER(KEYPATH, IMPLIED_VALUE); \ 418 if (SHOULD_PARSE) \ 419 if (auto MaybeValue = NORMALIZER(OPT_##ID, TABLE_INDEX, ARGS, DIAGS)) \ 420 KEYPATH = \ 421 MERGER(KEYPATH, static_cast<decltype(KEYPATH)>(*MaybeValue)); \ 422 } 423 424 // Capture the extracted value as a lambda argument to avoid potential issues 425 // with lifetime extension of the reference. 426 #define GENERATE_OPTION_WITH_MARSHALLING( \ 427 ARGS, STRING_ALLOCATOR, KIND, FLAGS, SPELLING, ALWAYS_EMIT, KEYPATH, \ 428 DEFAULT_VALUE, IMPLIED_CHECK, IMPLIED_VALUE, DENORMALIZER, EXTRACTOR, \ 429 TABLE_INDEX) \ 430 if ((FLAGS)&options::CC1Option) { \ 431 [&](const auto &Extracted) { \ 432 if (ALWAYS_EMIT || \ 433 (Extracted != \ 434 static_cast<decltype(KEYPATH)>((IMPLIED_CHECK) ? (IMPLIED_VALUE) \ 435 : (DEFAULT_VALUE)))) \ 436 DENORMALIZER(ARGS, SPELLING, STRING_ALLOCATOR, Option::KIND##Class, \ 437 TABLE_INDEX, Extracted); \ 438 }(EXTRACTOR(KEYPATH)); \ 439 } 440 441 static StringRef GetInputKindName(InputKind IK); 442 443 static bool FixupInvocation(CompilerInvocation &Invocation, 444 DiagnosticsEngine &Diags, const ArgList &Args, 445 InputKind IK) { 446 unsigned NumErrorsBefore = Diags.getNumErrors(); 447 448 LangOptions &LangOpts = *Invocation.getLangOpts(); 449 CodeGenOptions &CodeGenOpts = Invocation.getCodeGenOpts(); 450 TargetOptions &TargetOpts = Invocation.getTargetOpts(); 451 FrontendOptions &FrontendOpts = Invocation.getFrontendOpts(); 452 CodeGenOpts.XRayInstrumentFunctions = LangOpts.XRayInstrument; 453 CodeGenOpts.XRayAlwaysEmitCustomEvents = LangOpts.XRayAlwaysEmitCustomEvents; 454 CodeGenOpts.XRayAlwaysEmitTypedEvents = LangOpts.XRayAlwaysEmitTypedEvents; 455 CodeGenOpts.DisableFree = FrontendOpts.DisableFree; 456 FrontendOpts.GenerateGlobalModuleIndex = FrontendOpts.UseGlobalModuleIndex; 457 if (FrontendOpts.ShowStats) 458 CodeGenOpts.ClearASTBeforeBackend = false; 459 LangOpts.SanitizeCoverage = CodeGenOpts.hasSanitizeCoverage(); 460 LangOpts.ForceEmitVTables = CodeGenOpts.ForceEmitVTables; 461 LangOpts.SpeculativeLoadHardening = CodeGenOpts.SpeculativeLoadHardening; 462 LangOpts.CurrentModule = LangOpts.ModuleName; 463 464 llvm::Triple T(TargetOpts.Triple); 465 llvm::Triple::ArchType Arch = T.getArch(); 466 467 CodeGenOpts.CodeModel = TargetOpts.CodeModel; 468 469 if (LangOpts.getExceptionHandling() != 470 LangOptions::ExceptionHandlingKind::None && 471 T.isWindowsMSVCEnvironment()) 472 Diags.Report(diag::err_fe_invalid_exception_model) 473 << static_cast<unsigned>(LangOpts.getExceptionHandling()) << T.str(); 474 475 if (LangOpts.AppleKext && !LangOpts.CPlusPlus) 476 Diags.Report(diag::warn_c_kext); 477 478 if (Args.hasArg(OPT_fconcepts_ts)) 479 Diags.Report(diag::warn_fe_concepts_ts_flag); 480 481 if (LangOpts.NewAlignOverride && 482 !llvm::isPowerOf2_32(LangOpts.NewAlignOverride)) { 483 Arg *A = Args.getLastArg(OPT_fnew_alignment_EQ); 484 Diags.Report(diag::err_fe_invalid_alignment) 485 << A->getAsString(Args) << A->getValue(); 486 LangOpts.NewAlignOverride = 0; 487 } 488 489 // Prevent the user from specifying both -fsycl-is-device and -fsycl-is-host. 490 if (LangOpts.SYCLIsDevice && LangOpts.SYCLIsHost) 491 Diags.Report(diag::err_drv_argument_not_allowed_with) << "-fsycl-is-device" 492 << "-fsycl-is-host"; 493 494 if (Args.hasArg(OPT_fgnu89_inline) && LangOpts.CPlusPlus) 495 Diags.Report(diag::err_drv_argument_not_allowed_with) 496 << "-fgnu89-inline" << GetInputKindName(IK); 497 498 if (Args.hasArg(OPT_fgpu_allow_device_init) && !LangOpts.HIP) 499 Diags.Report(diag::warn_ignored_hip_only_option) 500 << Args.getLastArg(OPT_fgpu_allow_device_init)->getAsString(Args); 501 502 if (Args.hasArg(OPT_gpu_max_threads_per_block_EQ) && !LangOpts.HIP) 503 Diags.Report(diag::warn_ignored_hip_only_option) 504 << Args.getLastArg(OPT_gpu_max_threads_per_block_EQ)->getAsString(Args); 505 506 // -cl-strict-aliasing needs to emit diagnostic in the case where CL > 1.0. 507 // This option should be deprecated for CL > 1.0 because 508 // this option was added for compatibility with OpenCL 1.0. 509 if (Args.getLastArg(OPT_cl_strict_aliasing) && 510 (LangOpts.getOpenCLCompatibleVersion() > 100)) 511 Diags.Report(diag::warn_option_invalid_ocl_version) 512 << LangOpts.getOpenCLVersionString() 513 << Args.getLastArg(OPT_cl_strict_aliasing)->getAsString(Args); 514 515 if (Arg *A = Args.getLastArg(OPT_fdefault_calling_conv_EQ)) { 516 auto DefaultCC = LangOpts.getDefaultCallingConv(); 517 518 bool emitError = (DefaultCC == LangOptions::DCC_FastCall || 519 DefaultCC == LangOptions::DCC_StdCall) && 520 Arch != llvm::Triple::x86; 521 emitError |= (DefaultCC == LangOptions::DCC_VectorCall || 522 DefaultCC == LangOptions::DCC_RegCall) && 523 !T.isX86(); 524 if (emitError) 525 Diags.Report(diag::err_drv_argument_not_allowed_with) 526 << A->getSpelling() << T.getTriple(); 527 } 528 529 if (!CodeGenOpts.ProfileRemappingFile.empty() && CodeGenOpts.LegacyPassManager) 530 Diags.Report(diag::err_drv_argument_only_allowed_with) 531 << Args.getLastArg(OPT_fprofile_remapping_file_EQ)->getAsString(Args) 532 << "-fno-legacy-pass-manager"; 533 534 return Diags.getNumErrors() == NumErrorsBefore; 535 } 536 537 //===----------------------------------------------------------------------===// 538 // Deserialization (from args) 539 //===----------------------------------------------------------------------===// 540 541 static unsigned getOptimizationLevel(ArgList &Args, InputKind IK, 542 DiagnosticsEngine &Diags) { 543 unsigned DefaultOpt = llvm::CodeGenOpt::None; 544 if ((IK.getLanguage() == Language::OpenCL || 545 IK.getLanguage() == Language::OpenCLCXX) && 546 !Args.hasArg(OPT_cl_opt_disable)) 547 DefaultOpt = llvm::CodeGenOpt::Default; 548 549 if (Arg *A = Args.getLastArg(options::OPT_O_Group)) { 550 if (A->getOption().matches(options::OPT_O0)) 551 return llvm::CodeGenOpt::None; 552 553 if (A->getOption().matches(options::OPT_Ofast)) 554 return llvm::CodeGenOpt::Aggressive; 555 556 assert(A->getOption().matches(options::OPT_O)); 557 558 StringRef S(A->getValue()); 559 if (S == "s" || S == "z") 560 return llvm::CodeGenOpt::Default; 561 562 if (S == "g") 563 return llvm::CodeGenOpt::Less; 564 565 return getLastArgIntValue(Args, OPT_O, DefaultOpt, Diags); 566 } 567 568 return DefaultOpt; 569 } 570 571 static unsigned getOptimizationLevelSize(ArgList &Args) { 572 if (Arg *A = Args.getLastArg(options::OPT_O_Group)) { 573 if (A->getOption().matches(options::OPT_O)) { 574 switch (A->getValue()[0]) { 575 default: 576 return 0; 577 case 's': 578 return 1; 579 case 'z': 580 return 2; 581 } 582 } 583 } 584 return 0; 585 } 586 587 static void GenerateArg(SmallVectorImpl<const char *> &Args, 588 llvm::opt::OptSpecifier OptSpecifier, 589 CompilerInvocation::StringAllocator SA) { 590 Option Opt = getDriverOptTable().getOption(OptSpecifier); 591 denormalizeSimpleFlag(Args, SA(Opt.getPrefix() + Opt.getName()), SA, 592 Option::OptionClass::FlagClass, 0); 593 } 594 595 static void GenerateArg(SmallVectorImpl<const char *> &Args, 596 llvm::opt::OptSpecifier OptSpecifier, 597 const Twine &Value, 598 CompilerInvocation::StringAllocator SA) { 599 Option Opt = getDriverOptTable().getOption(OptSpecifier); 600 denormalizeString(Args, SA(Opt.getPrefix() + Opt.getName()), SA, 601 Opt.getKind(), 0, Value); 602 } 603 604 // Parse command line arguments into CompilerInvocation. 605 using ParseFn = 606 llvm::function_ref<bool(CompilerInvocation &, ArrayRef<const char *>, 607 DiagnosticsEngine &, const char *)>; 608 609 // Generate command line arguments from CompilerInvocation. 610 using GenerateFn = llvm::function_ref<void( 611 CompilerInvocation &, SmallVectorImpl<const char *> &, 612 CompilerInvocation::StringAllocator)>; 613 614 // May perform round-trip of command line arguments. By default, the round-trip 615 // is enabled in assert builds. This can be overwritten at run-time via the 616 // "-round-trip-args" and "-no-round-trip-args" command line flags. 617 // During round-trip, the command line arguments are parsed into a dummy 618 // instance of CompilerInvocation which is used to generate the command line 619 // arguments again. The real CompilerInvocation instance is then created by 620 // parsing the generated arguments, not the original ones. 621 static bool RoundTrip(ParseFn Parse, GenerateFn Generate, 622 CompilerInvocation &RealInvocation, 623 CompilerInvocation &DummyInvocation, 624 ArrayRef<const char *> CommandLineArgs, 625 DiagnosticsEngine &Diags, const char *Argv0) { 626 #ifndef NDEBUG 627 bool DoRoundTripDefault = true; 628 #else 629 bool DoRoundTripDefault = false; 630 #endif 631 632 bool DoRoundTrip = DoRoundTripDefault; 633 for (const auto *Arg : CommandLineArgs) { 634 if (Arg == StringRef("-round-trip-args")) 635 DoRoundTrip = true; 636 if (Arg == StringRef("-no-round-trip-args")) 637 DoRoundTrip = false; 638 } 639 640 // If round-trip was not requested, simply run the parser with the real 641 // invocation diagnostics. 642 if (!DoRoundTrip) 643 return Parse(RealInvocation, CommandLineArgs, Diags, Argv0); 644 645 // Serializes quoted (and potentially escaped) arguments. 646 auto SerializeArgs = [](ArrayRef<const char *> Args) { 647 std::string Buffer; 648 llvm::raw_string_ostream OS(Buffer); 649 for (const char *Arg : Args) { 650 llvm::sys::printArg(OS, Arg, /*Quote=*/true); 651 OS << ' '; 652 } 653 OS.flush(); 654 return Buffer; 655 }; 656 657 // Setup a dummy DiagnosticsEngine. 658 DiagnosticsEngine DummyDiags(new DiagnosticIDs(), new DiagnosticOptions()); 659 DummyDiags.setClient(new TextDiagnosticBuffer()); 660 661 // Run the first parse on the original arguments with the dummy invocation and 662 // diagnostics. 663 if (!Parse(DummyInvocation, CommandLineArgs, DummyDiags, Argv0) || 664 DummyDiags.getNumWarnings() != 0) { 665 // If the first parse did not succeed, it must be user mistake (invalid 666 // command line arguments). We won't be able to generate arguments that 667 // would reproduce the same result. Let's fail again with the real 668 // invocation and diagnostics, so all side-effects of parsing are visible. 669 unsigned NumWarningsBefore = Diags.getNumWarnings(); 670 auto Success = Parse(RealInvocation, CommandLineArgs, Diags, Argv0); 671 if (!Success || Diags.getNumWarnings() != NumWarningsBefore) 672 return Success; 673 674 // Parse with original options and diagnostics succeeded even though it 675 // shouldn't have. Something is off. 676 Diags.Report(diag::err_cc1_round_trip_fail_then_ok); 677 Diags.Report(diag::note_cc1_round_trip_original) 678 << SerializeArgs(CommandLineArgs); 679 return false; 680 } 681 682 // Setup string allocator. 683 llvm::BumpPtrAllocator Alloc; 684 llvm::StringSaver StringPool(Alloc); 685 auto SA = [&StringPool](const Twine &Arg) { 686 return StringPool.save(Arg).data(); 687 }; 688 689 // Generate arguments from the dummy invocation. If Generate is the 690 // inverse of Parse, the newly generated arguments must have the same 691 // semantics as the original. 692 SmallVector<const char *> GeneratedArgs1; 693 Generate(DummyInvocation, GeneratedArgs1, SA); 694 695 // Run the second parse, now on the generated arguments, and with the real 696 // invocation and diagnostics. The result is what we will end up using for the 697 // rest of compilation, so if Generate is not inverse of Parse, something down 698 // the line will break. 699 bool Success2 = Parse(RealInvocation, GeneratedArgs1, Diags, Argv0); 700 701 // The first parse on original arguments succeeded, but second parse of 702 // generated arguments failed. Something must be wrong with the generator. 703 if (!Success2) { 704 Diags.Report(diag::err_cc1_round_trip_ok_then_fail); 705 Diags.Report(diag::note_cc1_round_trip_generated) 706 << 1 << SerializeArgs(GeneratedArgs1); 707 return false; 708 } 709 710 // Generate arguments again, this time from the options we will end up using 711 // for the rest of the compilation. 712 SmallVector<const char *> GeneratedArgs2; 713 Generate(RealInvocation, GeneratedArgs2, SA); 714 715 // Compares two lists of generated arguments. 716 auto Equal = [](const ArrayRef<const char *> A, 717 const ArrayRef<const char *> B) { 718 return std::equal(A.begin(), A.end(), B.begin(), B.end(), 719 [](const char *AElem, const char *BElem) { 720 return StringRef(AElem) == StringRef(BElem); 721 }); 722 }; 723 724 // If we generated different arguments from what we assume are two 725 // semantically equivalent CompilerInvocations, the Generate function may 726 // be non-deterministic. 727 if (!Equal(GeneratedArgs1, GeneratedArgs2)) { 728 Diags.Report(diag::err_cc1_round_trip_mismatch); 729 Diags.Report(diag::note_cc1_round_trip_generated) 730 << 1 << SerializeArgs(GeneratedArgs1); 731 Diags.Report(diag::note_cc1_round_trip_generated) 732 << 2 << SerializeArgs(GeneratedArgs2); 733 return false; 734 } 735 736 Diags.Report(diag::remark_cc1_round_trip_generated) 737 << 1 << SerializeArgs(GeneratedArgs1); 738 Diags.Report(diag::remark_cc1_round_trip_generated) 739 << 2 << SerializeArgs(GeneratedArgs2); 740 741 return Success2; 742 } 743 744 static void addDiagnosticArgs(ArgList &Args, OptSpecifier Group, 745 OptSpecifier GroupWithValue, 746 std::vector<std::string> &Diagnostics) { 747 for (auto *A : Args.filtered(Group)) { 748 if (A->getOption().getKind() == Option::FlagClass) { 749 // The argument is a pure flag (such as OPT_Wall or OPT_Wdeprecated). Add 750 // its name (minus the "W" or "R" at the beginning) to the diagnostics. 751 Diagnostics.push_back( 752 std::string(A->getOption().getName().drop_front(1))); 753 } else if (A->getOption().matches(GroupWithValue)) { 754 // This is -Wfoo= or -Rfoo=, where foo is the name of the diagnostic 755 // group. Add only the group name to the diagnostics. 756 Diagnostics.push_back( 757 std::string(A->getOption().getName().drop_front(1).rtrim("=-"))); 758 } else { 759 // Otherwise, add its value (for OPT_W_Joined and similar). 760 Diagnostics.push_back(A->getValue()); 761 } 762 } 763 } 764 765 // Parse the Static Analyzer configuration. If \p Diags is set to nullptr, 766 // it won't verify the input. 767 static void parseAnalyzerConfigs(AnalyzerOptions &AnOpts, 768 DiagnosticsEngine *Diags); 769 770 static void getAllNoBuiltinFuncValues(ArgList &Args, 771 std::vector<std::string> &Funcs) { 772 std::vector<std::string> Values = Args.getAllArgValues(OPT_fno_builtin_); 773 auto BuiltinEnd = llvm::partition(Values, Builtin::Context::isBuiltinFunc); 774 Funcs.insert(Funcs.end(), Values.begin(), BuiltinEnd); 775 } 776 777 static void GenerateAnalyzerArgs(AnalyzerOptions &Opts, 778 SmallVectorImpl<const char *> &Args, 779 CompilerInvocation::StringAllocator SA) { 780 const AnalyzerOptions *AnalyzerOpts = &Opts; 781 782 #define ANALYZER_OPTION_WITH_MARSHALLING( \ 783 PREFIX_TYPE, NAME, ID, KIND, GROUP, ALIAS, ALIASARGS, FLAGS, PARAM, \ 784 HELPTEXT, METAVAR, VALUES, SPELLING, SHOULD_PARSE, ALWAYS_EMIT, KEYPATH, \ 785 DEFAULT_VALUE, IMPLIED_CHECK, IMPLIED_VALUE, NORMALIZER, DENORMALIZER, \ 786 MERGER, EXTRACTOR, TABLE_INDEX) \ 787 GENERATE_OPTION_WITH_MARSHALLING( \ 788 Args, SA, KIND, FLAGS, SPELLING, ALWAYS_EMIT, KEYPATH, DEFAULT_VALUE, \ 789 IMPLIED_CHECK, IMPLIED_VALUE, DENORMALIZER, EXTRACTOR, TABLE_INDEX) 790 #include "clang/Driver/Options.inc" 791 #undef ANALYZER_OPTION_WITH_MARSHALLING 792 793 if (Opts.AnalysisStoreOpt != RegionStoreModel) { 794 switch (Opts.AnalysisStoreOpt) { 795 #define ANALYSIS_STORE(NAME, CMDFLAG, DESC, CREATFN) \ 796 case NAME##Model: \ 797 GenerateArg(Args, OPT_analyzer_store, CMDFLAG, SA); \ 798 break; 799 #include "clang/StaticAnalyzer/Core/Analyses.def" 800 default: 801 llvm_unreachable("Tried to generate unknown analysis store."); 802 } 803 } 804 805 if (Opts.AnalysisConstraintsOpt != RangeConstraintsModel) { 806 switch (Opts.AnalysisConstraintsOpt) { 807 #define ANALYSIS_CONSTRAINTS(NAME, CMDFLAG, DESC, CREATFN) \ 808 case NAME##Model: \ 809 GenerateArg(Args, OPT_analyzer_constraints, CMDFLAG, SA); \ 810 break; 811 #include "clang/StaticAnalyzer/Core/Analyses.def" 812 default: 813 llvm_unreachable("Tried to generate unknown analysis constraint."); 814 } 815 } 816 817 if (Opts.AnalysisDiagOpt != PD_HTML) { 818 switch (Opts.AnalysisDiagOpt) { 819 #define ANALYSIS_DIAGNOSTICS(NAME, CMDFLAG, DESC, CREATFN) \ 820 case PD_##NAME: \ 821 GenerateArg(Args, OPT_analyzer_output, CMDFLAG, SA); \ 822 break; 823 #include "clang/StaticAnalyzer/Core/Analyses.def" 824 default: 825 llvm_unreachable("Tried to generate unknown analysis diagnostic client."); 826 } 827 } 828 829 if (Opts.AnalysisPurgeOpt != PurgeStmt) { 830 switch (Opts.AnalysisPurgeOpt) { 831 #define ANALYSIS_PURGE(NAME, CMDFLAG, DESC) \ 832 case NAME: \ 833 GenerateArg(Args, OPT_analyzer_purge, CMDFLAG, SA); \ 834 break; 835 #include "clang/StaticAnalyzer/Core/Analyses.def" 836 default: 837 llvm_unreachable("Tried to generate unknown analysis purge mode."); 838 } 839 } 840 841 if (Opts.InliningMode != NoRedundancy) { 842 switch (Opts.InliningMode) { 843 #define ANALYSIS_INLINING_MODE(NAME, CMDFLAG, DESC) \ 844 case NAME: \ 845 GenerateArg(Args, OPT_analyzer_inlining_mode, CMDFLAG, SA); \ 846 break; 847 #include "clang/StaticAnalyzer/Core/Analyses.def" 848 default: 849 llvm_unreachable("Tried to generate unknown analysis inlining mode."); 850 } 851 } 852 853 for (const auto &CP : Opts.CheckersAndPackages) { 854 OptSpecifier Opt = 855 CP.second ? OPT_analyzer_checker : OPT_analyzer_disable_checker; 856 GenerateArg(Args, Opt, CP.first, SA); 857 } 858 859 AnalyzerOptions ConfigOpts; 860 parseAnalyzerConfigs(ConfigOpts, nullptr); 861 862 for (const auto &C : Opts.Config) { 863 // Don't generate anything that came from parseAnalyzerConfigs. It would be 864 // redundant and may not be valid on the command line. 865 auto Entry = ConfigOpts.Config.find(C.getKey()); 866 if (Entry != ConfigOpts.Config.end() && Entry->getValue() == C.getValue()) 867 continue; 868 869 GenerateArg(Args, OPT_analyzer_config, C.getKey() + "=" + C.getValue(), SA); 870 } 871 872 // Nothing to generate for FullCompilerInvocation. 873 } 874 875 static bool ParseAnalyzerArgs(AnalyzerOptions &Opts, ArgList &Args, 876 DiagnosticsEngine &Diags) { 877 unsigned NumErrorsBefore = Diags.getNumErrors(); 878 879 AnalyzerOptions *AnalyzerOpts = &Opts; 880 881 #define ANALYZER_OPTION_WITH_MARSHALLING( \ 882 PREFIX_TYPE, NAME, ID, KIND, GROUP, ALIAS, ALIASARGS, FLAGS, PARAM, \ 883 HELPTEXT, METAVAR, VALUES, SPELLING, SHOULD_PARSE, ALWAYS_EMIT, KEYPATH, \ 884 DEFAULT_VALUE, IMPLIED_CHECK, IMPLIED_VALUE, NORMALIZER, DENORMALIZER, \ 885 MERGER, EXTRACTOR, TABLE_INDEX) \ 886 PARSE_OPTION_WITH_MARSHALLING( \ 887 Args, Diags, ID, FLAGS, PARAM, SHOULD_PARSE, KEYPATH, DEFAULT_VALUE, \ 888 IMPLIED_CHECK, IMPLIED_VALUE, NORMALIZER, MERGER, TABLE_INDEX) 889 #include "clang/Driver/Options.inc" 890 #undef ANALYZER_OPTION_WITH_MARSHALLING 891 892 if (Arg *A = Args.getLastArg(OPT_analyzer_store)) { 893 StringRef Name = A->getValue(); 894 AnalysisStores Value = llvm::StringSwitch<AnalysisStores>(Name) 895 #define ANALYSIS_STORE(NAME, CMDFLAG, DESC, CREATFN) \ 896 .Case(CMDFLAG, NAME##Model) 897 #include "clang/StaticAnalyzer/Core/Analyses.def" 898 .Default(NumStores); 899 if (Value == NumStores) { 900 Diags.Report(diag::err_drv_invalid_value) 901 << A->getAsString(Args) << Name; 902 } else { 903 Opts.AnalysisStoreOpt = Value; 904 } 905 } 906 907 if (Arg *A = Args.getLastArg(OPT_analyzer_constraints)) { 908 StringRef Name = A->getValue(); 909 AnalysisConstraints Value = llvm::StringSwitch<AnalysisConstraints>(Name) 910 #define ANALYSIS_CONSTRAINTS(NAME, CMDFLAG, DESC, CREATFN) \ 911 .Case(CMDFLAG, NAME##Model) 912 #include "clang/StaticAnalyzer/Core/Analyses.def" 913 .Default(NumConstraints); 914 if (Value == NumConstraints) { 915 Diags.Report(diag::err_drv_invalid_value) 916 << A->getAsString(Args) << Name; 917 } else { 918 #ifndef LLVM_WITH_Z3 919 if (Value == AnalysisConstraints::Z3ConstraintsModel) { 920 Diags.Report(diag::err_analyzer_not_built_with_z3); 921 } 922 #endif // LLVM_WITH_Z3 923 Opts.AnalysisConstraintsOpt = Value; 924 } 925 } 926 927 if (Arg *A = Args.getLastArg(OPT_analyzer_output)) { 928 StringRef Name = A->getValue(); 929 AnalysisDiagClients Value = llvm::StringSwitch<AnalysisDiagClients>(Name) 930 #define ANALYSIS_DIAGNOSTICS(NAME, CMDFLAG, DESC, CREATFN) \ 931 .Case(CMDFLAG, PD_##NAME) 932 #include "clang/StaticAnalyzer/Core/Analyses.def" 933 .Default(NUM_ANALYSIS_DIAG_CLIENTS); 934 if (Value == NUM_ANALYSIS_DIAG_CLIENTS) { 935 Diags.Report(diag::err_drv_invalid_value) 936 << A->getAsString(Args) << Name; 937 } else { 938 Opts.AnalysisDiagOpt = Value; 939 } 940 } 941 942 if (Arg *A = Args.getLastArg(OPT_analyzer_purge)) { 943 StringRef Name = A->getValue(); 944 AnalysisPurgeMode Value = llvm::StringSwitch<AnalysisPurgeMode>(Name) 945 #define ANALYSIS_PURGE(NAME, CMDFLAG, DESC) \ 946 .Case(CMDFLAG, NAME) 947 #include "clang/StaticAnalyzer/Core/Analyses.def" 948 .Default(NumPurgeModes); 949 if (Value == NumPurgeModes) { 950 Diags.Report(diag::err_drv_invalid_value) 951 << A->getAsString(Args) << Name; 952 } else { 953 Opts.AnalysisPurgeOpt = Value; 954 } 955 } 956 957 if (Arg *A = Args.getLastArg(OPT_analyzer_inlining_mode)) { 958 StringRef Name = A->getValue(); 959 AnalysisInliningMode Value = llvm::StringSwitch<AnalysisInliningMode>(Name) 960 #define ANALYSIS_INLINING_MODE(NAME, CMDFLAG, DESC) \ 961 .Case(CMDFLAG, NAME) 962 #include "clang/StaticAnalyzer/Core/Analyses.def" 963 .Default(NumInliningModes); 964 if (Value == NumInliningModes) { 965 Diags.Report(diag::err_drv_invalid_value) 966 << A->getAsString(Args) << Name; 967 } else { 968 Opts.InliningMode = Value; 969 } 970 } 971 972 Opts.CheckersAndPackages.clear(); 973 for (const Arg *A : 974 Args.filtered(OPT_analyzer_checker, OPT_analyzer_disable_checker)) { 975 A->claim(); 976 bool IsEnabled = A->getOption().getID() == OPT_analyzer_checker; 977 // We can have a list of comma separated checker names, e.g: 978 // '-analyzer-checker=cocoa,unix' 979 StringRef CheckerAndPackageList = A->getValue(); 980 SmallVector<StringRef, 16> CheckersAndPackages; 981 CheckerAndPackageList.split(CheckersAndPackages, ","); 982 for (const StringRef &CheckerOrPackage : CheckersAndPackages) 983 Opts.CheckersAndPackages.emplace_back(std::string(CheckerOrPackage), 984 IsEnabled); 985 } 986 987 // Go through the analyzer configuration options. 988 for (const auto *A : Args.filtered(OPT_analyzer_config)) { 989 990 // We can have a list of comma separated config names, e.g: 991 // '-analyzer-config key1=val1,key2=val2' 992 StringRef configList = A->getValue(); 993 SmallVector<StringRef, 4> configVals; 994 configList.split(configVals, ","); 995 for (const auto &configVal : configVals) { 996 StringRef key, val; 997 std::tie(key, val) = configVal.split("="); 998 if (val.empty()) { 999 Diags.Report(SourceLocation(), 1000 diag::err_analyzer_config_no_value) << configVal; 1001 break; 1002 } 1003 if (val.contains('=')) { 1004 Diags.Report(SourceLocation(), 1005 diag::err_analyzer_config_multiple_values) 1006 << configVal; 1007 break; 1008 } 1009 1010 // TODO: Check checker options too, possibly in CheckerRegistry. 1011 // Leave unknown non-checker configs unclaimed. 1012 if (!key.contains(":") && Opts.isUnknownAnalyzerConfig(key)) { 1013 if (Opts.ShouldEmitErrorsOnInvalidConfigValue) 1014 Diags.Report(diag::err_analyzer_config_unknown) << key; 1015 continue; 1016 } 1017 1018 A->claim(); 1019 Opts.Config[key] = std::string(val); 1020 } 1021 } 1022 1023 if (Opts.ShouldEmitErrorsOnInvalidConfigValue) 1024 parseAnalyzerConfigs(Opts, &Diags); 1025 else 1026 parseAnalyzerConfigs(Opts, nullptr); 1027 1028 llvm::raw_string_ostream os(Opts.FullCompilerInvocation); 1029 for (unsigned i = 0; i < Args.getNumInputArgStrings(); ++i) { 1030 if (i != 0) 1031 os << " "; 1032 os << Args.getArgString(i); 1033 } 1034 os.flush(); 1035 1036 return Diags.getNumErrors() == NumErrorsBefore; 1037 } 1038 1039 static StringRef getStringOption(AnalyzerOptions::ConfigTable &Config, 1040 StringRef OptionName, StringRef DefaultVal) { 1041 return Config.insert({OptionName, std::string(DefaultVal)}).first->second; 1042 } 1043 1044 static void initOption(AnalyzerOptions::ConfigTable &Config, 1045 DiagnosticsEngine *Diags, 1046 StringRef &OptionField, StringRef Name, 1047 StringRef DefaultVal) { 1048 // String options may be known to invalid (e.g. if the expected string is a 1049 // file name, but the file does not exist), those will have to be checked in 1050 // parseConfigs. 1051 OptionField = getStringOption(Config, Name, DefaultVal); 1052 } 1053 1054 static void initOption(AnalyzerOptions::ConfigTable &Config, 1055 DiagnosticsEngine *Diags, 1056 bool &OptionField, StringRef Name, bool DefaultVal) { 1057 auto PossiblyInvalidVal = llvm::StringSwitch<Optional<bool>>( 1058 getStringOption(Config, Name, (DefaultVal ? "true" : "false"))) 1059 .Case("true", true) 1060 .Case("false", false) 1061 .Default(None); 1062 1063 if (!PossiblyInvalidVal) { 1064 if (Diags) 1065 Diags->Report(diag::err_analyzer_config_invalid_input) 1066 << Name << "a boolean"; 1067 else 1068 OptionField = DefaultVal; 1069 } else 1070 OptionField = PossiblyInvalidVal.getValue(); 1071 } 1072 1073 static void initOption(AnalyzerOptions::ConfigTable &Config, 1074 DiagnosticsEngine *Diags, 1075 unsigned &OptionField, StringRef Name, 1076 unsigned DefaultVal) { 1077 1078 OptionField = DefaultVal; 1079 bool HasFailed = getStringOption(Config, Name, std::to_string(DefaultVal)) 1080 .getAsInteger(0, OptionField); 1081 if (Diags && HasFailed) 1082 Diags->Report(diag::err_analyzer_config_invalid_input) 1083 << Name << "an unsigned"; 1084 } 1085 1086 static void parseAnalyzerConfigs(AnalyzerOptions &AnOpts, 1087 DiagnosticsEngine *Diags) { 1088 // TODO: There's no need to store the entire configtable, it'd be plenty 1089 // enough tostore checker options. 1090 1091 #define ANALYZER_OPTION(TYPE, NAME, CMDFLAG, DESC, DEFAULT_VAL) \ 1092 initOption(AnOpts.Config, Diags, AnOpts.NAME, CMDFLAG, DEFAULT_VAL); 1093 1094 #define ANALYZER_OPTION_DEPENDS_ON_USER_MODE(TYPE, NAME, CMDFLAG, DESC, \ 1095 SHALLOW_VAL, DEEP_VAL) \ 1096 switch (AnOpts.getUserMode()) { \ 1097 case UMK_Shallow: \ 1098 initOption(AnOpts.Config, Diags, AnOpts.NAME, CMDFLAG, SHALLOW_VAL); \ 1099 break; \ 1100 case UMK_Deep: \ 1101 initOption(AnOpts.Config, Diags, AnOpts.NAME, CMDFLAG, DEEP_VAL); \ 1102 break; \ 1103 } \ 1104 1105 #include "clang/StaticAnalyzer/Core/AnalyzerOptions.def" 1106 #undef ANALYZER_OPTION 1107 #undef ANALYZER_OPTION_DEPENDS_ON_USER_MODE 1108 1109 // At this point, AnalyzerOptions is configured. Let's validate some options. 1110 1111 // FIXME: Here we try to validate the silenced checkers or packages are valid. 1112 // The current approach only validates the registered checkers which does not 1113 // contain the runtime enabled checkers and optimally we would validate both. 1114 if (!AnOpts.RawSilencedCheckersAndPackages.empty()) { 1115 std::vector<StringRef> Checkers = 1116 AnOpts.getRegisteredCheckers(/*IncludeExperimental=*/true); 1117 std::vector<StringRef> Packages = 1118 AnOpts.getRegisteredPackages(/*IncludeExperimental=*/true); 1119 1120 SmallVector<StringRef, 16> CheckersAndPackages; 1121 AnOpts.RawSilencedCheckersAndPackages.split(CheckersAndPackages, ";"); 1122 1123 for (const StringRef &CheckerOrPackage : CheckersAndPackages) { 1124 if (Diags) { 1125 bool IsChecker = CheckerOrPackage.contains('.'); 1126 bool IsValidName = IsChecker 1127 ? llvm::is_contained(Checkers, CheckerOrPackage) 1128 : llvm::is_contained(Packages, CheckerOrPackage); 1129 1130 if (!IsValidName) 1131 Diags->Report(diag::err_unknown_analyzer_checker_or_package) 1132 << CheckerOrPackage; 1133 } 1134 1135 AnOpts.SilencedCheckersAndPackages.emplace_back(CheckerOrPackage); 1136 } 1137 } 1138 1139 if (!Diags) 1140 return; 1141 1142 if (AnOpts.ShouldTrackConditionsDebug && !AnOpts.ShouldTrackConditions) 1143 Diags->Report(diag::err_analyzer_config_invalid_input) 1144 << "track-conditions-debug" << "'track-conditions' to also be enabled"; 1145 1146 if (!AnOpts.CTUDir.empty() && !llvm::sys::fs::is_directory(AnOpts.CTUDir)) 1147 Diags->Report(diag::err_analyzer_config_invalid_input) << "ctu-dir" 1148 << "a filename"; 1149 1150 if (!AnOpts.ModelPath.empty() && 1151 !llvm::sys::fs::is_directory(AnOpts.ModelPath)) 1152 Diags->Report(diag::err_analyzer_config_invalid_input) << "model-path" 1153 << "a filename"; 1154 } 1155 1156 /// Generate a remark argument. This is an inverse of `ParseOptimizationRemark`. 1157 static void 1158 GenerateOptimizationRemark(SmallVectorImpl<const char *> &Args, 1159 CompilerInvocation::StringAllocator SA, 1160 OptSpecifier OptEQ, StringRef Name, 1161 const CodeGenOptions::OptRemark &Remark) { 1162 if (Remark.hasValidPattern()) { 1163 GenerateArg(Args, OptEQ, Remark.Pattern, SA); 1164 } else if (Remark.Kind == CodeGenOptions::RK_Enabled) { 1165 GenerateArg(Args, OPT_R_Joined, Name, SA); 1166 } else if (Remark.Kind == CodeGenOptions::RK_Disabled) { 1167 GenerateArg(Args, OPT_R_Joined, StringRef("no-") + Name, SA); 1168 } 1169 } 1170 1171 /// Parse a remark command line argument. It may be missing, disabled/enabled by 1172 /// '-R[no-]group' or specified with a regular expression by '-Rgroup=regexp'. 1173 /// On top of that, it can be disabled/enabled globally by '-R[no-]everything'. 1174 static CodeGenOptions::OptRemark 1175 ParseOptimizationRemark(DiagnosticsEngine &Diags, ArgList &Args, 1176 OptSpecifier OptEQ, StringRef Name) { 1177 CodeGenOptions::OptRemark Result; 1178 1179 auto InitializeResultPattern = [&Diags, &Args, &Result](const Arg *A, 1180 StringRef Pattern) { 1181 Result.Pattern = Pattern.str(); 1182 1183 std::string RegexError; 1184 Result.Regex = std::make_shared<llvm::Regex>(Result.Pattern); 1185 if (!Result.Regex->isValid(RegexError)) { 1186 Diags.Report(diag::err_drv_optimization_remark_pattern) 1187 << RegexError << A->getAsString(Args); 1188 return false; 1189 } 1190 1191 return true; 1192 }; 1193 1194 for (Arg *A : Args) { 1195 if (A->getOption().matches(OPT_R_Joined)) { 1196 StringRef Value = A->getValue(); 1197 1198 if (Value == Name) 1199 Result.Kind = CodeGenOptions::RK_Enabled; 1200 else if (Value == "everything") 1201 Result.Kind = CodeGenOptions::RK_EnabledEverything; 1202 else if (Value.split('-') == std::make_pair(StringRef("no"), Name)) 1203 Result.Kind = CodeGenOptions::RK_Disabled; 1204 else if (Value == "no-everything") 1205 Result.Kind = CodeGenOptions::RK_DisabledEverything; 1206 else 1207 continue; 1208 1209 if (Result.Kind == CodeGenOptions::RK_Disabled || 1210 Result.Kind == CodeGenOptions::RK_DisabledEverything) { 1211 Result.Pattern = ""; 1212 Result.Regex = nullptr; 1213 } else { 1214 InitializeResultPattern(A, ".*"); 1215 } 1216 } else if (A->getOption().matches(OptEQ)) { 1217 Result.Kind = CodeGenOptions::RK_WithPattern; 1218 if (!InitializeResultPattern(A, A->getValue())) 1219 return CodeGenOptions::OptRemark(); 1220 } 1221 } 1222 1223 return Result; 1224 } 1225 1226 static bool parseDiagnosticLevelMask(StringRef FlagName, 1227 const std::vector<std::string> &Levels, 1228 DiagnosticsEngine &Diags, 1229 DiagnosticLevelMask &M) { 1230 bool Success = true; 1231 for (const auto &Level : Levels) { 1232 DiagnosticLevelMask const PM = 1233 llvm::StringSwitch<DiagnosticLevelMask>(Level) 1234 .Case("note", DiagnosticLevelMask::Note) 1235 .Case("remark", DiagnosticLevelMask::Remark) 1236 .Case("warning", DiagnosticLevelMask::Warning) 1237 .Case("error", DiagnosticLevelMask::Error) 1238 .Default(DiagnosticLevelMask::None); 1239 if (PM == DiagnosticLevelMask::None) { 1240 Success = false; 1241 Diags.Report(diag::err_drv_invalid_value) << FlagName << Level; 1242 } 1243 M = M | PM; 1244 } 1245 return Success; 1246 } 1247 1248 static void parseSanitizerKinds(StringRef FlagName, 1249 const std::vector<std::string> &Sanitizers, 1250 DiagnosticsEngine &Diags, SanitizerSet &S) { 1251 for (const auto &Sanitizer : Sanitizers) { 1252 SanitizerMask K = parseSanitizerValue(Sanitizer, /*AllowGroups=*/false); 1253 if (K == SanitizerMask()) 1254 Diags.Report(diag::err_drv_invalid_value) << FlagName << Sanitizer; 1255 else 1256 S.set(K, true); 1257 } 1258 } 1259 1260 static SmallVector<StringRef, 4> serializeSanitizerKinds(SanitizerSet S) { 1261 SmallVector<StringRef, 4> Values; 1262 serializeSanitizerSet(S, Values); 1263 return Values; 1264 } 1265 1266 static void parseXRayInstrumentationBundle(StringRef FlagName, StringRef Bundle, 1267 ArgList &Args, DiagnosticsEngine &D, 1268 XRayInstrSet &S) { 1269 llvm::SmallVector<StringRef, 2> BundleParts; 1270 llvm::SplitString(Bundle, BundleParts, ","); 1271 for (const auto &B : BundleParts) { 1272 auto Mask = parseXRayInstrValue(B); 1273 if (Mask == XRayInstrKind::None) 1274 if (B != "none") 1275 D.Report(diag::err_drv_invalid_value) << FlagName << Bundle; 1276 else 1277 S.Mask = Mask; 1278 else if (Mask == XRayInstrKind::All) 1279 S.Mask = Mask; 1280 else 1281 S.set(Mask, true); 1282 } 1283 } 1284 1285 static std::string serializeXRayInstrumentationBundle(const XRayInstrSet &S) { 1286 llvm::SmallVector<StringRef, 2> BundleParts; 1287 serializeXRayInstrValue(S, BundleParts); 1288 std::string Buffer; 1289 llvm::raw_string_ostream OS(Buffer); 1290 llvm::interleave(BundleParts, OS, [&OS](StringRef Part) { OS << Part; }, ","); 1291 return Buffer; 1292 } 1293 1294 // Set the profile kind using fprofile-instrument-use-path. 1295 static void setPGOUseInstrumentor(CodeGenOptions &Opts, 1296 const Twine &ProfileName) { 1297 auto ReaderOrErr = llvm::IndexedInstrProfReader::create(ProfileName); 1298 // In error, return silently and let Clang PGOUse report the error message. 1299 if (auto E = ReaderOrErr.takeError()) { 1300 llvm::consumeError(std::move(E)); 1301 Opts.setProfileUse(CodeGenOptions::ProfileClangInstr); 1302 return; 1303 } 1304 std::unique_ptr<llvm::IndexedInstrProfReader> PGOReader = 1305 std::move(ReaderOrErr.get()); 1306 if (PGOReader->isIRLevelProfile()) { 1307 if (PGOReader->hasCSIRLevelProfile()) 1308 Opts.setProfileUse(CodeGenOptions::ProfileCSIRInstr); 1309 else 1310 Opts.setProfileUse(CodeGenOptions::ProfileIRInstr); 1311 } else 1312 Opts.setProfileUse(CodeGenOptions::ProfileClangInstr); 1313 } 1314 1315 void CompilerInvocation::GenerateCodeGenArgs( 1316 const CodeGenOptions &Opts, SmallVectorImpl<const char *> &Args, 1317 StringAllocator SA, const llvm::Triple &T, const std::string &OutputFile, 1318 const LangOptions *LangOpts) { 1319 const CodeGenOptions &CodeGenOpts = Opts; 1320 1321 if (Opts.OptimizationLevel == 0) 1322 GenerateArg(Args, OPT_O0, SA); 1323 else 1324 GenerateArg(Args, OPT_O, Twine(Opts.OptimizationLevel), SA); 1325 1326 #define CODEGEN_OPTION_WITH_MARSHALLING( \ 1327 PREFIX_TYPE, NAME, ID, KIND, GROUP, ALIAS, ALIASARGS, FLAGS, PARAM, \ 1328 HELPTEXT, METAVAR, VALUES, SPELLING, SHOULD_PARSE, ALWAYS_EMIT, KEYPATH, \ 1329 DEFAULT_VALUE, IMPLIED_CHECK, IMPLIED_VALUE, NORMALIZER, DENORMALIZER, \ 1330 MERGER, EXTRACTOR, TABLE_INDEX) \ 1331 GENERATE_OPTION_WITH_MARSHALLING( \ 1332 Args, SA, KIND, FLAGS, SPELLING, ALWAYS_EMIT, KEYPATH, DEFAULT_VALUE, \ 1333 IMPLIED_CHECK, IMPLIED_VALUE, DENORMALIZER, EXTRACTOR, TABLE_INDEX) 1334 #include "clang/Driver/Options.inc" 1335 #undef CODEGEN_OPTION_WITH_MARSHALLING 1336 1337 if (Opts.OptimizationLevel > 0) { 1338 if (Opts.Inlining == CodeGenOptions::NormalInlining) 1339 GenerateArg(Args, OPT_finline_functions, SA); 1340 else if (Opts.Inlining == CodeGenOptions::OnlyHintInlining) 1341 GenerateArg(Args, OPT_finline_hint_functions, SA); 1342 else if (Opts.Inlining == CodeGenOptions::OnlyAlwaysInlining) 1343 GenerateArg(Args, OPT_fno_inline, SA); 1344 } 1345 1346 if (Opts.DirectAccessExternalData && LangOpts->PICLevel != 0) 1347 GenerateArg(Args, OPT_fdirect_access_external_data, SA); 1348 else if (!Opts.DirectAccessExternalData && LangOpts->PICLevel == 0) 1349 GenerateArg(Args, OPT_fno_direct_access_external_data, SA); 1350 1351 Optional<StringRef> DebugInfoVal; 1352 switch (Opts.DebugInfo) { 1353 case codegenoptions::DebugLineTablesOnly: 1354 DebugInfoVal = "line-tables-only"; 1355 break; 1356 case codegenoptions::DebugDirectivesOnly: 1357 DebugInfoVal = "line-directives-only"; 1358 break; 1359 case codegenoptions::DebugInfoConstructor: 1360 DebugInfoVal = "constructor"; 1361 break; 1362 case codegenoptions::LimitedDebugInfo: 1363 DebugInfoVal = "limited"; 1364 break; 1365 case codegenoptions::FullDebugInfo: 1366 DebugInfoVal = "standalone"; 1367 break; 1368 case codegenoptions::UnusedTypeInfo: 1369 DebugInfoVal = "unused-types"; 1370 break; 1371 case codegenoptions::NoDebugInfo: // default value 1372 DebugInfoVal = None; 1373 break; 1374 case codegenoptions::LocTrackingOnly: // implied value 1375 DebugInfoVal = None; 1376 break; 1377 } 1378 if (DebugInfoVal) 1379 GenerateArg(Args, OPT_debug_info_kind_EQ, *DebugInfoVal, SA); 1380 1381 for (const auto &Prefix : Opts.DebugPrefixMap) 1382 GenerateArg(Args, OPT_fdebug_prefix_map_EQ, 1383 Prefix.first + "=" + Prefix.second, SA); 1384 1385 for (const auto &Prefix : Opts.CoveragePrefixMap) 1386 GenerateArg(Args, OPT_fcoverage_prefix_map_EQ, 1387 Prefix.first + "=" + Prefix.second, SA); 1388 1389 if (Opts.NewStructPathTBAA) 1390 GenerateArg(Args, OPT_new_struct_path_tbaa, SA); 1391 1392 if (Opts.OptimizeSize == 1) 1393 GenerateArg(Args, OPT_O, "s", SA); 1394 else if (Opts.OptimizeSize == 2) 1395 GenerateArg(Args, OPT_O, "z", SA); 1396 1397 // SimplifyLibCalls is set only in the absence of -fno-builtin and 1398 // -ffreestanding. We'll consider that when generating them. 1399 1400 // NoBuiltinFuncs are generated by LangOptions. 1401 1402 if (Opts.UnrollLoops && Opts.OptimizationLevel <= 1) 1403 GenerateArg(Args, OPT_funroll_loops, SA); 1404 else if (!Opts.UnrollLoops && Opts.OptimizationLevel > 1) 1405 GenerateArg(Args, OPT_fno_unroll_loops, SA); 1406 1407 if (!Opts.BinutilsVersion.empty()) 1408 GenerateArg(Args, OPT_fbinutils_version_EQ, Opts.BinutilsVersion, SA); 1409 1410 if (Opts.DebugNameTable == 1411 static_cast<unsigned>(llvm::DICompileUnit::DebugNameTableKind::GNU)) 1412 GenerateArg(Args, OPT_ggnu_pubnames, SA); 1413 else if (Opts.DebugNameTable == 1414 static_cast<unsigned>( 1415 llvm::DICompileUnit::DebugNameTableKind::Default)) 1416 GenerateArg(Args, OPT_gpubnames, SA); 1417 1418 auto TNK = Opts.getDebugSimpleTemplateNames(); 1419 if (TNK != codegenoptions::DebugTemplateNamesKind::Full) { 1420 if (TNK == codegenoptions::DebugTemplateNamesKind::Simple) 1421 GenerateArg(Args, OPT_gsimple_template_names_EQ, "simple", SA); 1422 else if (TNK == codegenoptions::DebugTemplateNamesKind::Mangled) 1423 GenerateArg(Args, OPT_gsimple_template_names_EQ, "mangled", SA); 1424 } 1425 // ProfileInstrumentUsePath is marshalled automatically, no need to generate 1426 // it or PGOUseInstrumentor. 1427 1428 if (Opts.TimePasses) { 1429 if (Opts.TimePassesPerRun) 1430 GenerateArg(Args, OPT_ftime_report_EQ, "per-pass-run", SA); 1431 else 1432 GenerateArg(Args, OPT_ftime_report, SA); 1433 } 1434 1435 if (Opts.PrepareForLTO && !Opts.PrepareForThinLTO) 1436 GenerateArg(Args, OPT_flto_EQ, "full", SA); 1437 1438 if (Opts.PrepareForThinLTO) 1439 GenerateArg(Args, OPT_flto_EQ, "thin", SA); 1440 1441 if (!Opts.ThinLTOIndexFile.empty()) 1442 GenerateArg(Args, OPT_fthinlto_index_EQ, Opts.ThinLTOIndexFile, SA); 1443 1444 if (Opts.SaveTempsFilePrefix == OutputFile) 1445 GenerateArg(Args, OPT_save_temps_EQ, "obj", SA); 1446 1447 StringRef MemProfileBasename("memprof.profraw"); 1448 if (!Opts.MemoryProfileOutput.empty()) { 1449 if (Opts.MemoryProfileOutput == MemProfileBasename) { 1450 GenerateArg(Args, OPT_fmemory_profile, SA); 1451 } else { 1452 size_t ArgLength = 1453 Opts.MemoryProfileOutput.size() - MemProfileBasename.size(); 1454 GenerateArg(Args, OPT_fmemory_profile_EQ, 1455 Opts.MemoryProfileOutput.substr(0, ArgLength), SA); 1456 } 1457 } 1458 1459 if (memcmp(Opts.CoverageVersion, "408*", 4) != 0) 1460 GenerateArg(Args, OPT_coverage_version_EQ, 1461 StringRef(Opts.CoverageVersion, 4), SA); 1462 1463 // TODO: Check if we need to generate arguments stored in CmdArgs. (Namely 1464 // '-fembed_bitcode', which does not map to any CompilerInvocation field and 1465 // won't be generated.) 1466 1467 if (Opts.XRayInstrumentationBundle.Mask != XRayInstrKind::All) { 1468 std::string InstrBundle = 1469 serializeXRayInstrumentationBundle(Opts.XRayInstrumentationBundle); 1470 if (!InstrBundle.empty()) 1471 GenerateArg(Args, OPT_fxray_instrumentation_bundle, InstrBundle, SA); 1472 } 1473 1474 if (Opts.CFProtectionReturn && Opts.CFProtectionBranch) 1475 GenerateArg(Args, OPT_fcf_protection_EQ, "full", SA); 1476 else if (Opts.CFProtectionReturn) 1477 GenerateArg(Args, OPT_fcf_protection_EQ, "return", SA); 1478 else if (Opts.CFProtectionBranch) 1479 GenerateArg(Args, OPT_fcf_protection_EQ, "branch", SA); 1480 1481 for (const auto &F : Opts.LinkBitcodeFiles) { 1482 bool Builtint = F.LinkFlags == llvm::Linker::Flags::LinkOnlyNeeded && 1483 F.PropagateAttrs && F.Internalize; 1484 GenerateArg(Args, 1485 Builtint ? OPT_mlink_builtin_bitcode : OPT_mlink_bitcode_file, 1486 F.Filename, SA); 1487 } 1488 1489 // TODO: Consider removing marshalling annotations from f[no_]emulated_tls. 1490 // That would make it easy to generate the option only **once** if it was 1491 // explicitly set to non-default value. 1492 if (Opts.ExplicitEmulatedTLS) { 1493 GenerateArg( 1494 Args, Opts.EmulatedTLS ? OPT_femulated_tls : OPT_fno_emulated_tls, SA); 1495 } 1496 1497 if (Opts.FPDenormalMode != llvm::DenormalMode::getIEEE()) 1498 GenerateArg(Args, OPT_fdenormal_fp_math_EQ, Opts.FPDenormalMode.str(), SA); 1499 1500 if (Opts.FP32DenormalMode != llvm::DenormalMode::getIEEE()) 1501 GenerateArg(Args, OPT_fdenormal_fp_math_f32_EQ, Opts.FP32DenormalMode.str(), 1502 SA); 1503 1504 if (Opts.StructReturnConvention == CodeGenOptions::SRCK_OnStack) { 1505 OptSpecifier Opt = 1506 T.isPPC32() ? OPT_maix_struct_return : OPT_fpcc_struct_return; 1507 GenerateArg(Args, Opt, SA); 1508 } else if (Opts.StructReturnConvention == CodeGenOptions::SRCK_InRegs) { 1509 OptSpecifier Opt = 1510 T.isPPC32() ? OPT_msvr4_struct_return : OPT_freg_struct_return; 1511 GenerateArg(Args, Opt, SA); 1512 } 1513 1514 if (Opts.EnableAIXExtendedAltivecABI) 1515 GenerateArg(Args, OPT_mabi_EQ_vec_extabi, SA); 1516 1517 if (!Opts.OptRecordPasses.empty()) 1518 GenerateArg(Args, OPT_opt_record_passes, Opts.OptRecordPasses, SA); 1519 1520 if (!Opts.OptRecordFormat.empty()) 1521 GenerateArg(Args, OPT_opt_record_format, Opts.OptRecordFormat, SA); 1522 1523 GenerateOptimizationRemark(Args, SA, OPT_Rpass_EQ, "pass", 1524 Opts.OptimizationRemark); 1525 1526 GenerateOptimizationRemark(Args, SA, OPT_Rpass_missed_EQ, "pass-missed", 1527 Opts.OptimizationRemarkMissed); 1528 1529 GenerateOptimizationRemark(Args, SA, OPT_Rpass_analysis_EQ, "pass-analysis", 1530 Opts.OptimizationRemarkAnalysis); 1531 1532 GenerateArg(Args, OPT_fdiagnostics_hotness_threshold_EQ, 1533 Opts.DiagnosticsHotnessThreshold 1534 ? Twine(*Opts.DiagnosticsHotnessThreshold) 1535 : "auto", 1536 SA); 1537 1538 for (StringRef Sanitizer : serializeSanitizerKinds(Opts.SanitizeRecover)) 1539 GenerateArg(Args, OPT_fsanitize_recover_EQ, Sanitizer, SA); 1540 1541 for (StringRef Sanitizer : serializeSanitizerKinds(Opts.SanitizeTrap)) 1542 GenerateArg(Args, OPT_fsanitize_trap_EQ, Sanitizer, SA); 1543 1544 if (!Opts.EmitVersionIdentMetadata) 1545 GenerateArg(Args, OPT_Qn, SA); 1546 1547 switch (Opts.FiniteLoops) { 1548 case CodeGenOptions::FiniteLoopsKind::Language: 1549 break; 1550 case CodeGenOptions::FiniteLoopsKind::Always: 1551 GenerateArg(Args, OPT_ffinite_loops, SA); 1552 break; 1553 case CodeGenOptions::FiniteLoopsKind::Never: 1554 GenerateArg(Args, OPT_fno_finite_loops, SA); 1555 break; 1556 } 1557 } 1558 1559 bool CompilerInvocation::ParseCodeGenArgs(CodeGenOptions &Opts, ArgList &Args, 1560 InputKind IK, 1561 DiagnosticsEngine &Diags, 1562 const llvm::Triple &T, 1563 const std::string &OutputFile, 1564 const LangOptions &LangOptsRef) { 1565 unsigned NumErrorsBefore = Diags.getNumErrors(); 1566 1567 unsigned OptimizationLevel = getOptimizationLevel(Args, IK, Diags); 1568 // TODO: This could be done in Driver 1569 unsigned MaxOptLevel = 3; 1570 if (OptimizationLevel > MaxOptLevel) { 1571 // If the optimization level is not supported, fall back on the default 1572 // optimization 1573 Diags.Report(diag::warn_drv_optimization_value) 1574 << Args.getLastArg(OPT_O)->getAsString(Args) << "-O" << MaxOptLevel; 1575 OptimizationLevel = MaxOptLevel; 1576 } 1577 Opts.OptimizationLevel = OptimizationLevel; 1578 1579 // The key paths of codegen options defined in Options.td start with 1580 // "CodeGenOpts.". Let's provide the expected variable name and type. 1581 CodeGenOptions &CodeGenOpts = Opts; 1582 // Some codegen options depend on language options. Let's provide the expected 1583 // variable name and type. 1584 const LangOptions *LangOpts = &LangOptsRef; 1585 1586 #define CODEGEN_OPTION_WITH_MARSHALLING( \ 1587 PREFIX_TYPE, NAME, ID, KIND, GROUP, ALIAS, ALIASARGS, FLAGS, PARAM, \ 1588 HELPTEXT, METAVAR, VALUES, SPELLING, SHOULD_PARSE, ALWAYS_EMIT, KEYPATH, \ 1589 DEFAULT_VALUE, IMPLIED_CHECK, IMPLIED_VALUE, NORMALIZER, DENORMALIZER, \ 1590 MERGER, EXTRACTOR, TABLE_INDEX) \ 1591 PARSE_OPTION_WITH_MARSHALLING( \ 1592 Args, Diags, ID, FLAGS, PARAM, SHOULD_PARSE, KEYPATH, DEFAULT_VALUE, \ 1593 IMPLIED_CHECK, IMPLIED_VALUE, NORMALIZER, MERGER, TABLE_INDEX) 1594 #include "clang/Driver/Options.inc" 1595 #undef CODEGEN_OPTION_WITH_MARSHALLING 1596 1597 // At O0 we want to fully disable inlining outside of cases marked with 1598 // 'alwaysinline' that are required for correctness. 1599 Opts.setInlining((Opts.OptimizationLevel == 0) 1600 ? CodeGenOptions::OnlyAlwaysInlining 1601 : CodeGenOptions::NormalInlining); 1602 // Explicit inlining flags can disable some or all inlining even at 1603 // optimization levels above zero. 1604 if (Arg *InlineArg = Args.getLastArg( 1605 options::OPT_finline_functions, options::OPT_finline_hint_functions, 1606 options::OPT_fno_inline_functions, options::OPT_fno_inline)) { 1607 if (Opts.OptimizationLevel > 0) { 1608 const Option &InlineOpt = InlineArg->getOption(); 1609 if (InlineOpt.matches(options::OPT_finline_functions)) 1610 Opts.setInlining(CodeGenOptions::NormalInlining); 1611 else if (InlineOpt.matches(options::OPT_finline_hint_functions)) 1612 Opts.setInlining(CodeGenOptions::OnlyHintInlining); 1613 else 1614 Opts.setInlining(CodeGenOptions::OnlyAlwaysInlining); 1615 } 1616 } 1617 1618 // PIC defaults to -fno-direct-access-external-data while non-PIC defaults to 1619 // -fdirect-access-external-data. 1620 Opts.DirectAccessExternalData = 1621 Args.hasArg(OPT_fdirect_access_external_data) || 1622 (!Args.hasArg(OPT_fno_direct_access_external_data) && 1623 LangOpts->PICLevel == 0); 1624 1625 if (Arg *A = Args.getLastArg(OPT_debug_info_kind_EQ)) { 1626 unsigned Val = 1627 llvm::StringSwitch<unsigned>(A->getValue()) 1628 .Case("line-tables-only", codegenoptions::DebugLineTablesOnly) 1629 .Case("line-directives-only", codegenoptions::DebugDirectivesOnly) 1630 .Case("constructor", codegenoptions::DebugInfoConstructor) 1631 .Case("limited", codegenoptions::LimitedDebugInfo) 1632 .Case("standalone", codegenoptions::FullDebugInfo) 1633 .Case("unused-types", codegenoptions::UnusedTypeInfo) 1634 .Default(~0U); 1635 if (Val == ~0U) 1636 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) 1637 << A->getValue(); 1638 else 1639 Opts.setDebugInfo(static_cast<codegenoptions::DebugInfoKind>(Val)); 1640 } 1641 1642 // If -fuse-ctor-homing is set and limited debug info is already on, then use 1643 // constructor homing, and vice versa for -fno-use-ctor-homing. 1644 if (const Arg *A = 1645 Args.getLastArg(OPT_fuse_ctor_homing, OPT_fno_use_ctor_homing)) { 1646 if (A->getOption().matches(OPT_fuse_ctor_homing) && 1647 Opts.getDebugInfo() == codegenoptions::LimitedDebugInfo) 1648 Opts.setDebugInfo(codegenoptions::DebugInfoConstructor); 1649 if (A->getOption().matches(OPT_fno_use_ctor_homing) && 1650 Opts.getDebugInfo() == codegenoptions::DebugInfoConstructor) 1651 Opts.setDebugInfo(codegenoptions::LimitedDebugInfo); 1652 } 1653 1654 for (const auto &Arg : Args.getAllArgValues(OPT_fdebug_prefix_map_EQ)) { 1655 auto Split = StringRef(Arg).split('='); 1656 Opts.DebugPrefixMap.insert( 1657 {std::string(Split.first), std::string(Split.second)}); 1658 } 1659 1660 for (const auto &Arg : Args.getAllArgValues(OPT_fcoverage_prefix_map_EQ)) { 1661 auto Split = StringRef(Arg).split('='); 1662 Opts.CoveragePrefixMap.insert( 1663 {std::string(Split.first), std::string(Split.second)}); 1664 } 1665 1666 const llvm::Triple::ArchType DebugEntryValueArchs[] = { 1667 llvm::Triple::x86, llvm::Triple::x86_64, llvm::Triple::aarch64, 1668 llvm::Triple::arm, llvm::Triple::armeb, llvm::Triple::mips, 1669 llvm::Triple::mipsel, llvm::Triple::mips64, llvm::Triple::mips64el}; 1670 1671 if (Opts.OptimizationLevel > 0 && Opts.hasReducedDebugInfo() && 1672 llvm::is_contained(DebugEntryValueArchs, T.getArch())) 1673 Opts.EmitCallSiteInfo = true; 1674 1675 if (!Opts.EnableDIPreservationVerify && Opts.DIBugsReportFilePath.size()) { 1676 Diags.Report(diag::warn_ignoring_verify_debuginfo_preserve_export) 1677 << Opts.DIBugsReportFilePath; 1678 Opts.DIBugsReportFilePath = ""; 1679 } 1680 1681 Opts.NewStructPathTBAA = !Args.hasArg(OPT_no_struct_path_tbaa) && 1682 Args.hasArg(OPT_new_struct_path_tbaa); 1683 Opts.OptimizeSize = getOptimizationLevelSize(Args); 1684 Opts.SimplifyLibCalls = !LangOpts->NoBuiltin; 1685 if (Opts.SimplifyLibCalls) 1686 Opts.NoBuiltinFuncs = LangOpts->NoBuiltinFuncs; 1687 Opts.UnrollLoops = 1688 Args.hasFlag(OPT_funroll_loops, OPT_fno_unroll_loops, 1689 (Opts.OptimizationLevel > 1)); 1690 Opts.BinutilsVersion = 1691 std::string(Args.getLastArgValue(OPT_fbinutils_version_EQ)); 1692 1693 Opts.DebugNameTable = static_cast<unsigned>( 1694 Args.hasArg(OPT_ggnu_pubnames) 1695 ? llvm::DICompileUnit::DebugNameTableKind::GNU 1696 : Args.hasArg(OPT_gpubnames) 1697 ? llvm::DICompileUnit::DebugNameTableKind::Default 1698 : llvm::DICompileUnit::DebugNameTableKind::None); 1699 if (const Arg *A = Args.getLastArg(OPT_gsimple_template_names_EQ)) { 1700 StringRef Value = A->getValue(); 1701 if (Value != "simple" && Value != "mangled") 1702 Diags.Report(diag::err_drv_unsupported_option_argument) 1703 << A->getOption().getName() << A->getValue(); 1704 Opts.setDebugSimpleTemplateNames( 1705 StringRef(A->getValue()) == "simple" 1706 ? codegenoptions::DebugTemplateNamesKind::Simple 1707 : codegenoptions::DebugTemplateNamesKind::Mangled); 1708 } 1709 1710 if (!Opts.ProfileInstrumentUsePath.empty()) 1711 setPGOUseInstrumentor(Opts, Opts.ProfileInstrumentUsePath); 1712 1713 if (const Arg *A = Args.getLastArg(OPT_ftime_report, OPT_ftime_report_EQ)) { 1714 Opts.TimePasses = true; 1715 1716 // -ftime-report= is only for new pass manager. 1717 if (A->getOption().getID() == OPT_ftime_report_EQ) { 1718 if (Opts.LegacyPassManager) 1719 Diags.Report(diag::err_drv_argument_only_allowed_with) 1720 << A->getAsString(Args) << "-fno-legacy-pass-manager"; 1721 1722 StringRef Val = A->getValue(); 1723 if (Val == "per-pass") 1724 Opts.TimePassesPerRun = false; 1725 else if (Val == "per-pass-run") 1726 Opts.TimePassesPerRun = true; 1727 else 1728 Diags.Report(diag::err_drv_invalid_value) 1729 << A->getAsString(Args) << A->getValue(); 1730 } 1731 } 1732 1733 Opts.PrepareForLTO = false; 1734 Opts.PrepareForThinLTO = false; 1735 if (Arg *A = Args.getLastArg(OPT_flto_EQ)) { 1736 Opts.PrepareForLTO = true; 1737 StringRef S = A->getValue(); 1738 if (S == "thin") 1739 Opts.PrepareForThinLTO = true; 1740 else if (S != "full") 1741 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << S; 1742 } 1743 if (Arg *A = Args.getLastArg(OPT_fthinlto_index_EQ)) { 1744 if (IK.getLanguage() != Language::LLVM_IR) 1745 Diags.Report(diag::err_drv_argument_only_allowed_with) 1746 << A->getAsString(Args) << "-x ir"; 1747 Opts.ThinLTOIndexFile = 1748 std::string(Args.getLastArgValue(OPT_fthinlto_index_EQ)); 1749 } 1750 if (Arg *A = Args.getLastArg(OPT_save_temps_EQ)) 1751 Opts.SaveTempsFilePrefix = 1752 llvm::StringSwitch<std::string>(A->getValue()) 1753 .Case("obj", OutputFile) 1754 .Default(llvm::sys::path::filename(OutputFile).str()); 1755 1756 // The memory profile runtime appends the pid to make this name more unique. 1757 const char *MemProfileBasename = "memprof.profraw"; 1758 if (Args.hasArg(OPT_fmemory_profile_EQ)) { 1759 SmallString<128> Path( 1760 std::string(Args.getLastArgValue(OPT_fmemory_profile_EQ))); 1761 llvm::sys::path::append(Path, MemProfileBasename); 1762 Opts.MemoryProfileOutput = std::string(Path); 1763 } else if (Args.hasArg(OPT_fmemory_profile)) 1764 Opts.MemoryProfileOutput = MemProfileBasename; 1765 1766 memcpy(Opts.CoverageVersion, "408*", 4); 1767 if (Opts.EmitGcovArcs || Opts.EmitGcovNotes) { 1768 if (Args.hasArg(OPT_coverage_version_EQ)) { 1769 StringRef CoverageVersion = Args.getLastArgValue(OPT_coverage_version_EQ); 1770 if (CoverageVersion.size() != 4) { 1771 Diags.Report(diag::err_drv_invalid_value) 1772 << Args.getLastArg(OPT_coverage_version_EQ)->getAsString(Args) 1773 << CoverageVersion; 1774 } else { 1775 memcpy(Opts.CoverageVersion, CoverageVersion.data(), 4); 1776 } 1777 } 1778 } 1779 // FIXME: For backend options that are not yet recorded as function 1780 // attributes in the IR, keep track of them so we can embed them in a 1781 // separate data section and use them when building the bitcode. 1782 for (const auto &A : Args) { 1783 // Do not encode output and input. 1784 if (A->getOption().getID() == options::OPT_o || 1785 A->getOption().getID() == options::OPT_INPUT || 1786 A->getOption().getID() == options::OPT_x || 1787 A->getOption().getID() == options::OPT_fembed_bitcode || 1788 A->getOption().matches(options::OPT_W_Group)) 1789 continue; 1790 ArgStringList ASL; 1791 A->render(Args, ASL); 1792 for (const auto &arg : ASL) { 1793 StringRef ArgStr(arg); 1794 Opts.CmdArgs.insert(Opts.CmdArgs.end(), ArgStr.begin(), ArgStr.end()); 1795 // using \00 to separate each commandline options. 1796 Opts.CmdArgs.push_back('\0'); 1797 } 1798 } 1799 1800 auto XRayInstrBundles = 1801 Args.getAllArgValues(OPT_fxray_instrumentation_bundle); 1802 if (XRayInstrBundles.empty()) 1803 Opts.XRayInstrumentationBundle.Mask = XRayInstrKind::All; 1804 else 1805 for (const auto &A : XRayInstrBundles) 1806 parseXRayInstrumentationBundle("-fxray-instrumentation-bundle=", A, Args, 1807 Diags, Opts.XRayInstrumentationBundle); 1808 1809 if (const Arg *A = Args.getLastArg(OPT_fcf_protection_EQ)) { 1810 StringRef Name = A->getValue(); 1811 if (Name == "full") { 1812 Opts.CFProtectionReturn = 1; 1813 Opts.CFProtectionBranch = 1; 1814 } else if (Name == "return") 1815 Opts.CFProtectionReturn = 1; 1816 else if (Name == "branch") 1817 Opts.CFProtectionBranch = 1; 1818 else if (Name != "none") 1819 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Name; 1820 } 1821 1822 if (Opts.PrepareForLTO && Args.hasArg(OPT_mibt_seal)) 1823 Opts.IBTSeal = 1; 1824 1825 for (auto *A : 1826 Args.filtered(OPT_mlink_bitcode_file, OPT_mlink_builtin_bitcode)) { 1827 CodeGenOptions::BitcodeFileToLink F; 1828 F.Filename = A->getValue(); 1829 if (A->getOption().matches(OPT_mlink_builtin_bitcode)) { 1830 F.LinkFlags = llvm::Linker::Flags::LinkOnlyNeeded; 1831 // When linking CUDA bitcode, propagate function attributes so that 1832 // e.g. libdevice gets fast-math attrs if we're building with fast-math. 1833 F.PropagateAttrs = true; 1834 F.Internalize = true; 1835 } 1836 Opts.LinkBitcodeFiles.push_back(F); 1837 } 1838 1839 if (Args.getLastArg(OPT_femulated_tls) || 1840 Args.getLastArg(OPT_fno_emulated_tls)) { 1841 Opts.ExplicitEmulatedTLS = true; 1842 } 1843 1844 if (Arg *A = Args.getLastArg(OPT_ftlsmodel_EQ)) { 1845 if (T.isOSAIX()) { 1846 StringRef Name = A->getValue(); 1847 if (Name != "global-dynamic") 1848 Diags.Report(diag::err_aix_unsupported_tls_model) << Name; 1849 } 1850 } 1851 1852 if (Arg *A = Args.getLastArg(OPT_fdenormal_fp_math_EQ)) { 1853 StringRef Val = A->getValue(); 1854 Opts.FPDenormalMode = llvm::parseDenormalFPAttribute(Val); 1855 if (!Opts.FPDenormalMode.isValid()) 1856 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Val; 1857 } 1858 1859 if (Arg *A = Args.getLastArg(OPT_fdenormal_fp_math_f32_EQ)) { 1860 StringRef Val = A->getValue(); 1861 Opts.FP32DenormalMode = llvm::parseDenormalFPAttribute(Val); 1862 if (!Opts.FP32DenormalMode.isValid()) 1863 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Val; 1864 } 1865 1866 // X86_32 has -fppc-struct-return and -freg-struct-return. 1867 // PPC32 has -maix-struct-return and -msvr4-struct-return. 1868 if (Arg *A = 1869 Args.getLastArg(OPT_fpcc_struct_return, OPT_freg_struct_return, 1870 OPT_maix_struct_return, OPT_msvr4_struct_return)) { 1871 // TODO: We might want to consider enabling these options on AIX in the 1872 // future. 1873 if (T.isOSAIX()) 1874 Diags.Report(diag::err_drv_unsupported_opt_for_target) 1875 << A->getSpelling() << T.str(); 1876 1877 const Option &O = A->getOption(); 1878 if (O.matches(OPT_fpcc_struct_return) || 1879 O.matches(OPT_maix_struct_return)) { 1880 Opts.setStructReturnConvention(CodeGenOptions::SRCK_OnStack); 1881 } else { 1882 assert(O.matches(OPT_freg_struct_return) || 1883 O.matches(OPT_msvr4_struct_return)); 1884 Opts.setStructReturnConvention(CodeGenOptions::SRCK_InRegs); 1885 } 1886 } 1887 1888 if (Arg *A = 1889 Args.getLastArg(OPT_mabi_EQ_vec_default, OPT_mabi_EQ_vec_extabi)) { 1890 if (!T.isOSAIX()) 1891 Diags.Report(diag::err_drv_unsupported_opt_for_target) 1892 << A->getSpelling() << T.str(); 1893 1894 const Option &O = A->getOption(); 1895 Opts.EnableAIXExtendedAltivecABI = O.matches(OPT_mabi_EQ_vec_extabi); 1896 } 1897 1898 bool NeedLocTracking = false; 1899 1900 if (!Opts.OptRecordFile.empty()) 1901 NeedLocTracking = true; 1902 1903 if (Arg *A = Args.getLastArg(OPT_opt_record_passes)) { 1904 Opts.OptRecordPasses = A->getValue(); 1905 NeedLocTracking = true; 1906 } 1907 1908 if (Arg *A = Args.getLastArg(OPT_opt_record_format)) { 1909 Opts.OptRecordFormat = A->getValue(); 1910 NeedLocTracking = true; 1911 } 1912 1913 Opts.OptimizationRemark = 1914 ParseOptimizationRemark(Diags, Args, OPT_Rpass_EQ, "pass"); 1915 1916 Opts.OptimizationRemarkMissed = 1917 ParseOptimizationRemark(Diags, Args, OPT_Rpass_missed_EQ, "pass-missed"); 1918 1919 Opts.OptimizationRemarkAnalysis = ParseOptimizationRemark( 1920 Diags, Args, OPT_Rpass_analysis_EQ, "pass-analysis"); 1921 1922 NeedLocTracking |= Opts.OptimizationRemark.hasValidPattern() || 1923 Opts.OptimizationRemarkMissed.hasValidPattern() || 1924 Opts.OptimizationRemarkAnalysis.hasValidPattern(); 1925 1926 bool UsingSampleProfile = !Opts.SampleProfileFile.empty(); 1927 bool UsingProfile = UsingSampleProfile || 1928 (Opts.getProfileUse() != CodeGenOptions::ProfileNone); 1929 1930 if (Opts.DiagnosticsWithHotness && !UsingProfile && 1931 // An IR file will contain PGO as metadata 1932 IK.getLanguage() != Language::LLVM_IR) 1933 Diags.Report(diag::warn_drv_diagnostics_hotness_requires_pgo) 1934 << "-fdiagnostics-show-hotness"; 1935 1936 // Parse remarks hotness threshold. Valid value is either integer or 'auto'. 1937 if (auto *arg = 1938 Args.getLastArg(options::OPT_fdiagnostics_hotness_threshold_EQ)) { 1939 auto ResultOrErr = 1940 llvm::remarks::parseHotnessThresholdOption(arg->getValue()); 1941 1942 if (!ResultOrErr) { 1943 Diags.Report(diag::err_drv_invalid_diagnotics_hotness_threshold) 1944 << "-fdiagnostics-hotness-threshold="; 1945 } else { 1946 Opts.DiagnosticsHotnessThreshold = *ResultOrErr; 1947 if ((!Opts.DiagnosticsHotnessThreshold.hasValue() || 1948 Opts.DiagnosticsHotnessThreshold.getValue() > 0) && 1949 !UsingProfile) 1950 Diags.Report(diag::warn_drv_diagnostics_hotness_requires_pgo) 1951 << "-fdiagnostics-hotness-threshold="; 1952 } 1953 } 1954 1955 // If the user requested to use a sample profile for PGO, then the 1956 // backend will need to track source location information so the profile 1957 // can be incorporated into the IR. 1958 if (UsingSampleProfile) 1959 NeedLocTracking = true; 1960 1961 if (!Opts.StackUsageOutput.empty()) 1962 NeedLocTracking = true; 1963 1964 // If the user requested a flag that requires source locations available in 1965 // the backend, make sure that the backend tracks source location information. 1966 if (NeedLocTracking && Opts.getDebugInfo() == codegenoptions::NoDebugInfo) 1967 Opts.setDebugInfo(codegenoptions::LocTrackingOnly); 1968 1969 // Parse -fsanitize-recover= arguments. 1970 // FIXME: Report unrecoverable sanitizers incorrectly specified here. 1971 parseSanitizerKinds("-fsanitize-recover=", 1972 Args.getAllArgValues(OPT_fsanitize_recover_EQ), Diags, 1973 Opts.SanitizeRecover); 1974 parseSanitizerKinds("-fsanitize-trap=", 1975 Args.getAllArgValues(OPT_fsanitize_trap_EQ), Diags, 1976 Opts.SanitizeTrap); 1977 1978 Opts.EmitVersionIdentMetadata = Args.hasFlag(OPT_Qy, OPT_Qn, true); 1979 1980 if (Args.hasArg(options::OPT_ffinite_loops)) 1981 Opts.FiniteLoops = CodeGenOptions::FiniteLoopsKind::Always; 1982 else if (Args.hasArg(options::OPT_fno_finite_loops)) 1983 Opts.FiniteLoops = CodeGenOptions::FiniteLoopsKind::Never; 1984 1985 Opts.EmitIEEENaNCompliantInsts = Args.hasFlag( 1986 options::OPT_mamdgpu_ieee, options::OPT_mno_amdgpu_ieee, true); 1987 if (!Opts.EmitIEEENaNCompliantInsts && !LangOptsRef.NoHonorNaNs) 1988 Diags.Report(diag::err_drv_amdgpu_ieee_without_no_honor_nans); 1989 1990 return Diags.getNumErrors() == NumErrorsBefore; 1991 } 1992 1993 static void 1994 GenerateDependencyOutputArgs(const DependencyOutputOptions &Opts, 1995 SmallVectorImpl<const char *> &Args, 1996 CompilerInvocation::StringAllocator SA) { 1997 const DependencyOutputOptions &DependencyOutputOpts = Opts; 1998 #define DEPENDENCY_OUTPUT_OPTION_WITH_MARSHALLING( \ 1999 PREFIX_TYPE, NAME, ID, KIND, GROUP, ALIAS, ALIASARGS, FLAGS, PARAM, \ 2000 HELPTEXT, METAVAR, VALUES, SPELLING, SHOULD_PARSE, ALWAYS_EMIT, KEYPATH, \ 2001 DEFAULT_VALUE, IMPLIED_CHECK, IMPLIED_VALUE, NORMALIZER, DENORMALIZER, \ 2002 MERGER, EXTRACTOR, TABLE_INDEX) \ 2003 GENERATE_OPTION_WITH_MARSHALLING( \ 2004 Args, SA, KIND, FLAGS, SPELLING, ALWAYS_EMIT, KEYPATH, DEFAULT_VALUE, \ 2005 IMPLIED_CHECK, IMPLIED_VALUE, DENORMALIZER, EXTRACTOR, TABLE_INDEX) 2006 #include "clang/Driver/Options.inc" 2007 #undef DEPENDENCY_OUTPUT_OPTION_WITH_MARSHALLING 2008 2009 if (Opts.ShowIncludesDest != ShowIncludesDestination::None) 2010 GenerateArg(Args, OPT_show_includes, SA); 2011 2012 for (const auto &Dep : Opts.ExtraDeps) { 2013 switch (Dep.second) { 2014 case EDK_SanitizeIgnorelist: 2015 // Sanitizer ignorelist arguments are generated from LanguageOptions. 2016 continue; 2017 case EDK_ModuleFile: 2018 // Module file arguments are generated from FrontendOptions and 2019 // HeaderSearchOptions. 2020 continue; 2021 case EDK_ProfileList: 2022 // Profile list arguments are generated from LanguageOptions via the 2023 // marshalling infrastructure. 2024 continue; 2025 case EDK_DepFileEntry: 2026 GenerateArg(Args, OPT_fdepfile_entry, Dep.first, SA); 2027 break; 2028 } 2029 } 2030 } 2031 2032 static bool ParseDependencyOutputArgs(DependencyOutputOptions &Opts, 2033 ArgList &Args, DiagnosticsEngine &Diags, 2034 frontend::ActionKind Action, 2035 bool ShowLineMarkers) { 2036 unsigned NumErrorsBefore = Diags.getNumErrors(); 2037 2038 DependencyOutputOptions &DependencyOutputOpts = Opts; 2039 #define DEPENDENCY_OUTPUT_OPTION_WITH_MARSHALLING( \ 2040 PREFIX_TYPE, NAME, ID, KIND, GROUP, ALIAS, ALIASARGS, FLAGS, PARAM, \ 2041 HELPTEXT, METAVAR, VALUES, SPELLING, SHOULD_PARSE, ALWAYS_EMIT, KEYPATH, \ 2042 DEFAULT_VALUE, IMPLIED_CHECK, IMPLIED_VALUE, NORMALIZER, DENORMALIZER, \ 2043 MERGER, EXTRACTOR, TABLE_INDEX) \ 2044 PARSE_OPTION_WITH_MARSHALLING( \ 2045 Args, Diags, ID, FLAGS, PARAM, SHOULD_PARSE, KEYPATH, DEFAULT_VALUE, \ 2046 IMPLIED_CHECK, IMPLIED_VALUE, NORMALIZER, MERGER, TABLE_INDEX) 2047 #include "clang/Driver/Options.inc" 2048 #undef DEPENDENCY_OUTPUT_OPTION_WITH_MARSHALLING 2049 2050 if (Args.hasArg(OPT_show_includes)) { 2051 // Writing both /showIncludes and preprocessor output to stdout 2052 // would produce interleaved output, so use stderr for /showIncludes. 2053 // This behaves the same as cl.exe, when /E, /EP or /P are passed. 2054 if (Action == frontend::PrintPreprocessedInput || !ShowLineMarkers) 2055 Opts.ShowIncludesDest = ShowIncludesDestination::Stderr; 2056 else 2057 Opts.ShowIncludesDest = ShowIncludesDestination::Stdout; 2058 } else { 2059 Opts.ShowIncludesDest = ShowIncludesDestination::None; 2060 } 2061 2062 // Add sanitizer ignorelists as extra dependencies. 2063 // They won't be discovered by the regular preprocessor, so 2064 // we let make / ninja to know about this implicit dependency. 2065 if (!Args.hasArg(OPT_fno_sanitize_ignorelist)) { 2066 for (const auto *A : Args.filtered(OPT_fsanitize_ignorelist_EQ)) { 2067 StringRef Val = A->getValue(); 2068 if (!Val.contains('=')) 2069 Opts.ExtraDeps.emplace_back(std::string(Val), EDK_SanitizeIgnorelist); 2070 } 2071 if (Opts.IncludeSystemHeaders) { 2072 for (const auto *A : Args.filtered(OPT_fsanitize_system_ignorelist_EQ)) { 2073 StringRef Val = A->getValue(); 2074 if (!Val.contains('=')) 2075 Opts.ExtraDeps.emplace_back(std::string(Val), EDK_SanitizeIgnorelist); 2076 } 2077 } 2078 } 2079 2080 // -fprofile-list= dependencies. 2081 for (const auto &Filename : Args.getAllArgValues(OPT_fprofile_list_EQ)) 2082 Opts.ExtraDeps.emplace_back(Filename, EDK_ProfileList); 2083 2084 // Propagate the extra dependencies. 2085 for (const auto *A : Args.filtered(OPT_fdepfile_entry)) 2086 Opts.ExtraDeps.emplace_back(A->getValue(), EDK_DepFileEntry); 2087 2088 // Only the -fmodule-file=<file> form. 2089 for (const auto *A : Args.filtered(OPT_fmodule_file)) { 2090 StringRef Val = A->getValue(); 2091 if (!Val.contains('=')) 2092 Opts.ExtraDeps.emplace_back(std::string(Val), EDK_ModuleFile); 2093 } 2094 2095 return Diags.getNumErrors() == NumErrorsBefore; 2096 } 2097 2098 static bool parseShowColorsArgs(const ArgList &Args, bool DefaultColor) { 2099 // Color diagnostics default to auto ("on" if terminal supports) in the driver 2100 // but default to off in cc1, needing an explicit OPT_fdiagnostics_color. 2101 // Support both clang's -f[no-]color-diagnostics and gcc's 2102 // -f[no-]diagnostics-colors[=never|always|auto]. 2103 enum { 2104 Colors_On, 2105 Colors_Off, 2106 Colors_Auto 2107 } ShowColors = DefaultColor ? Colors_Auto : Colors_Off; 2108 for (auto *A : Args) { 2109 const Option &O = A->getOption(); 2110 if (O.matches(options::OPT_fcolor_diagnostics) || 2111 O.matches(options::OPT_fdiagnostics_color)) { 2112 ShowColors = Colors_On; 2113 } else if (O.matches(options::OPT_fno_color_diagnostics) || 2114 O.matches(options::OPT_fno_diagnostics_color)) { 2115 ShowColors = Colors_Off; 2116 } else if (O.matches(options::OPT_fdiagnostics_color_EQ)) { 2117 StringRef Value(A->getValue()); 2118 if (Value == "always") 2119 ShowColors = Colors_On; 2120 else if (Value == "never") 2121 ShowColors = Colors_Off; 2122 else if (Value == "auto") 2123 ShowColors = Colors_Auto; 2124 } 2125 } 2126 return ShowColors == Colors_On || 2127 (ShowColors == Colors_Auto && 2128 llvm::sys::Process::StandardErrHasColors()); 2129 } 2130 2131 static bool checkVerifyPrefixes(const std::vector<std::string> &VerifyPrefixes, 2132 DiagnosticsEngine &Diags) { 2133 bool Success = true; 2134 for (const auto &Prefix : VerifyPrefixes) { 2135 // Every prefix must start with a letter and contain only alphanumeric 2136 // characters, hyphens, and underscores. 2137 auto BadChar = llvm::find_if(Prefix, [](char C) { 2138 return !isAlphanumeric(C) && C != '-' && C != '_'; 2139 }); 2140 if (BadChar != Prefix.end() || !isLetter(Prefix[0])) { 2141 Success = false; 2142 Diags.Report(diag::err_drv_invalid_value) << "-verify=" << Prefix; 2143 Diags.Report(diag::note_drv_verify_prefix_spelling); 2144 } 2145 } 2146 return Success; 2147 } 2148 2149 static void GenerateFileSystemArgs(const FileSystemOptions &Opts, 2150 SmallVectorImpl<const char *> &Args, 2151 CompilerInvocation::StringAllocator SA) { 2152 const FileSystemOptions &FileSystemOpts = Opts; 2153 2154 #define FILE_SYSTEM_OPTION_WITH_MARSHALLING( \ 2155 PREFIX_TYPE, NAME, ID, KIND, GROUP, ALIAS, ALIASARGS, FLAGS, PARAM, \ 2156 HELPTEXT, METAVAR, VALUES, SPELLING, SHOULD_PARSE, ALWAYS_EMIT, KEYPATH, \ 2157 DEFAULT_VALUE, IMPLIED_CHECK, IMPLIED_VALUE, NORMALIZER, DENORMALIZER, \ 2158 MERGER, EXTRACTOR, TABLE_INDEX) \ 2159 GENERATE_OPTION_WITH_MARSHALLING( \ 2160 Args, SA, KIND, FLAGS, SPELLING, ALWAYS_EMIT, KEYPATH, DEFAULT_VALUE, \ 2161 IMPLIED_CHECK, IMPLIED_VALUE, DENORMALIZER, EXTRACTOR, TABLE_INDEX) 2162 #include "clang/Driver/Options.inc" 2163 #undef FILE_SYSTEM_OPTION_WITH_MARSHALLING 2164 } 2165 2166 static bool ParseFileSystemArgs(FileSystemOptions &Opts, const ArgList &Args, 2167 DiagnosticsEngine &Diags) { 2168 unsigned NumErrorsBefore = Diags.getNumErrors(); 2169 2170 FileSystemOptions &FileSystemOpts = Opts; 2171 2172 #define FILE_SYSTEM_OPTION_WITH_MARSHALLING( \ 2173 PREFIX_TYPE, NAME, ID, KIND, GROUP, ALIAS, ALIASARGS, FLAGS, PARAM, \ 2174 HELPTEXT, METAVAR, VALUES, SPELLING, SHOULD_PARSE, ALWAYS_EMIT, KEYPATH, \ 2175 DEFAULT_VALUE, IMPLIED_CHECK, IMPLIED_VALUE, NORMALIZER, DENORMALIZER, \ 2176 MERGER, EXTRACTOR, TABLE_INDEX) \ 2177 PARSE_OPTION_WITH_MARSHALLING( \ 2178 Args, Diags, ID, FLAGS, PARAM, SHOULD_PARSE, KEYPATH, DEFAULT_VALUE, \ 2179 IMPLIED_CHECK, IMPLIED_VALUE, NORMALIZER, MERGER, TABLE_INDEX) 2180 #include "clang/Driver/Options.inc" 2181 #undef FILE_SYSTEM_OPTION_WITH_MARSHALLING 2182 2183 return Diags.getNumErrors() == NumErrorsBefore; 2184 } 2185 2186 static void GenerateMigratorArgs(const MigratorOptions &Opts, 2187 SmallVectorImpl<const char *> &Args, 2188 CompilerInvocation::StringAllocator SA) { 2189 const MigratorOptions &MigratorOpts = Opts; 2190 #define MIGRATOR_OPTION_WITH_MARSHALLING( \ 2191 PREFIX_TYPE, NAME, ID, KIND, GROUP, ALIAS, ALIASARGS, FLAGS, PARAM, \ 2192 HELPTEXT, METAVAR, VALUES, SPELLING, SHOULD_PARSE, ALWAYS_EMIT, KEYPATH, \ 2193 DEFAULT_VALUE, IMPLIED_CHECK, IMPLIED_VALUE, NORMALIZER, DENORMALIZER, \ 2194 MERGER, EXTRACTOR, TABLE_INDEX) \ 2195 GENERATE_OPTION_WITH_MARSHALLING( \ 2196 Args, SA, KIND, FLAGS, SPELLING, ALWAYS_EMIT, KEYPATH, DEFAULT_VALUE, \ 2197 IMPLIED_CHECK, IMPLIED_VALUE, DENORMALIZER, EXTRACTOR, TABLE_INDEX) 2198 #include "clang/Driver/Options.inc" 2199 #undef MIGRATOR_OPTION_WITH_MARSHALLING 2200 } 2201 2202 static bool ParseMigratorArgs(MigratorOptions &Opts, const ArgList &Args, 2203 DiagnosticsEngine &Diags) { 2204 unsigned NumErrorsBefore = Diags.getNumErrors(); 2205 2206 MigratorOptions &MigratorOpts = Opts; 2207 2208 #define MIGRATOR_OPTION_WITH_MARSHALLING( \ 2209 PREFIX_TYPE, NAME, ID, KIND, GROUP, ALIAS, ALIASARGS, FLAGS, PARAM, \ 2210 HELPTEXT, METAVAR, VALUES, SPELLING, SHOULD_PARSE, ALWAYS_EMIT, KEYPATH, \ 2211 DEFAULT_VALUE, IMPLIED_CHECK, IMPLIED_VALUE, NORMALIZER, DENORMALIZER, \ 2212 MERGER, EXTRACTOR, TABLE_INDEX) \ 2213 PARSE_OPTION_WITH_MARSHALLING( \ 2214 Args, Diags, ID, FLAGS, PARAM, SHOULD_PARSE, KEYPATH, DEFAULT_VALUE, \ 2215 IMPLIED_CHECK, IMPLIED_VALUE, NORMALIZER, MERGER, TABLE_INDEX) 2216 #include "clang/Driver/Options.inc" 2217 #undef MIGRATOR_OPTION_WITH_MARSHALLING 2218 2219 return Diags.getNumErrors() == NumErrorsBefore; 2220 } 2221 2222 void CompilerInvocation::GenerateDiagnosticArgs( 2223 const DiagnosticOptions &Opts, SmallVectorImpl<const char *> &Args, 2224 StringAllocator SA, bool DefaultDiagColor) { 2225 const DiagnosticOptions *DiagnosticOpts = &Opts; 2226 #define DIAG_OPTION_WITH_MARSHALLING( \ 2227 PREFIX_TYPE, NAME, ID, KIND, GROUP, ALIAS, ALIASARGS, FLAGS, PARAM, \ 2228 HELPTEXT, METAVAR, VALUES, SPELLING, SHOULD_PARSE, ALWAYS_EMIT, KEYPATH, \ 2229 DEFAULT_VALUE, IMPLIED_CHECK, IMPLIED_VALUE, NORMALIZER, DENORMALIZER, \ 2230 MERGER, EXTRACTOR, TABLE_INDEX) \ 2231 GENERATE_OPTION_WITH_MARSHALLING( \ 2232 Args, SA, KIND, FLAGS, SPELLING, ALWAYS_EMIT, KEYPATH, DEFAULT_VALUE, \ 2233 IMPLIED_CHECK, IMPLIED_VALUE, DENORMALIZER, EXTRACTOR, TABLE_INDEX) 2234 #include "clang/Driver/Options.inc" 2235 #undef DIAG_OPTION_WITH_MARSHALLING 2236 2237 if (!Opts.DiagnosticSerializationFile.empty()) 2238 GenerateArg(Args, OPT_diagnostic_serialized_file, 2239 Opts.DiagnosticSerializationFile, SA); 2240 2241 if (Opts.ShowColors) 2242 GenerateArg(Args, OPT_fcolor_diagnostics, SA); 2243 2244 if (Opts.VerifyDiagnostics && 2245 llvm::is_contained(Opts.VerifyPrefixes, "expected")) 2246 GenerateArg(Args, OPT_verify, SA); 2247 2248 for (const auto &Prefix : Opts.VerifyPrefixes) 2249 if (Prefix != "expected") 2250 GenerateArg(Args, OPT_verify_EQ, Prefix, SA); 2251 2252 DiagnosticLevelMask VIU = Opts.getVerifyIgnoreUnexpected(); 2253 if (VIU == DiagnosticLevelMask::None) { 2254 // This is the default, don't generate anything. 2255 } else if (VIU == DiagnosticLevelMask::All) { 2256 GenerateArg(Args, OPT_verify_ignore_unexpected, SA); 2257 } else { 2258 if (static_cast<unsigned>(VIU & DiagnosticLevelMask::Note) != 0) 2259 GenerateArg(Args, OPT_verify_ignore_unexpected_EQ, "note", SA); 2260 if (static_cast<unsigned>(VIU & DiagnosticLevelMask::Remark) != 0) 2261 GenerateArg(Args, OPT_verify_ignore_unexpected_EQ, "remark", SA); 2262 if (static_cast<unsigned>(VIU & DiagnosticLevelMask::Warning) != 0) 2263 GenerateArg(Args, OPT_verify_ignore_unexpected_EQ, "warning", SA); 2264 if (static_cast<unsigned>(VIU & DiagnosticLevelMask::Error) != 0) 2265 GenerateArg(Args, OPT_verify_ignore_unexpected_EQ, "error", SA); 2266 } 2267 2268 for (const auto &Warning : Opts.Warnings) { 2269 // This option is automatically generated from UndefPrefixes. 2270 if (Warning == "undef-prefix") 2271 continue; 2272 Args.push_back(SA(StringRef("-W") + Warning)); 2273 } 2274 2275 for (const auto &Remark : Opts.Remarks) { 2276 // These arguments are generated from OptimizationRemark fields of 2277 // CodeGenOptions. 2278 StringRef IgnoredRemarks[] = {"pass", "no-pass", 2279 "pass-analysis", "no-pass-analysis", 2280 "pass-missed", "no-pass-missed"}; 2281 if (llvm::is_contained(IgnoredRemarks, Remark)) 2282 continue; 2283 2284 Args.push_back(SA(StringRef("-R") + Remark)); 2285 } 2286 } 2287 2288 std::unique_ptr<DiagnosticOptions> 2289 clang::CreateAndPopulateDiagOpts(ArrayRef<const char *> Argv) { 2290 auto DiagOpts = std::make_unique<DiagnosticOptions>(); 2291 unsigned MissingArgIndex, MissingArgCount; 2292 InputArgList Args = getDriverOptTable().ParseArgs( 2293 Argv.slice(1), MissingArgIndex, MissingArgCount); 2294 // We ignore MissingArgCount and the return value of ParseDiagnosticArgs. 2295 // Any errors that would be diagnosed here will also be diagnosed later, 2296 // when the DiagnosticsEngine actually exists. 2297 (void)ParseDiagnosticArgs(*DiagOpts, Args); 2298 return DiagOpts; 2299 } 2300 2301 bool clang::ParseDiagnosticArgs(DiagnosticOptions &Opts, ArgList &Args, 2302 DiagnosticsEngine *Diags, 2303 bool DefaultDiagColor) { 2304 Optional<DiagnosticsEngine> IgnoringDiags; 2305 if (!Diags) { 2306 IgnoringDiags.emplace(new DiagnosticIDs(), new DiagnosticOptions(), 2307 new IgnoringDiagConsumer()); 2308 Diags = &*IgnoringDiags; 2309 } 2310 2311 unsigned NumErrorsBefore = Diags->getNumErrors(); 2312 2313 // The key paths of diagnostic options defined in Options.td start with 2314 // "DiagnosticOpts->". Let's provide the expected variable name and type. 2315 DiagnosticOptions *DiagnosticOpts = &Opts; 2316 2317 #define DIAG_OPTION_WITH_MARSHALLING( \ 2318 PREFIX_TYPE, NAME, ID, KIND, GROUP, ALIAS, ALIASARGS, FLAGS, PARAM, \ 2319 HELPTEXT, METAVAR, VALUES, SPELLING, SHOULD_PARSE, ALWAYS_EMIT, KEYPATH, \ 2320 DEFAULT_VALUE, IMPLIED_CHECK, IMPLIED_VALUE, NORMALIZER, DENORMALIZER, \ 2321 MERGER, EXTRACTOR, TABLE_INDEX) \ 2322 PARSE_OPTION_WITH_MARSHALLING( \ 2323 Args, *Diags, ID, FLAGS, PARAM, SHOULD_PARSE, KEYPATH, DEFAULT_VALUE, \ 2324 IMPLIED_CHECK, IMPLIED_VALUE, NORMALIZER, MERGER, TABLE_INDEX) 2325 #include "clang/Driver/Options.inc" 2326 #undef DIAG_OPTION_WITH_MARSHALLING 2327 2328 llvm::sys::Process::UseANSIEscapeCodes(Opts.UseANSIEscapeCodes); 2329 2330 if (Arg *A = 2331 Args.getLastArg(OPT_diagnostic_serialized_file, OPT__serialize_diags)) 2332 Opts.DiagnosticSerializationFile = A->getValue(); 2333 Opts.ShowColors = parseShowColorsArgs(Args, DefaultDiagColor); 2334 2335 Opts.VerifyDiagnostics = Args.hasArg(OPT_verify) || Args.hasArg(OPT_verify_EQ); 2336 Opts.VerifyPrefixes = Args.getAllArgValues(OPT_verify_EQ); 2337 if (Args.hasArg(OPT_verify)) 2338 Opts.VerifyPrefixes.push_back("expected"); 2339 // Keep VerifyPrefixes in its original order for the sake of diagnostics, and 2340 // then sort it to prepare for fast lookup using std::binary_search. 2341 if (!checkVerifyPrefixes(Opts.VerifyPrefixes, *Diags)) 2342 Opts.VerifyDiagnostics = false; 2343 else 2344 llvm::sort(Opts.VerifyPrefixes); 2345 DiagnosticLevelMask DiagMask = DiagnosticLevelMask::None; 2346 parseDiagnosticLevelMask( 2347 "-verify-ignore-unexpected=", 2348 Args.getAllArgValues(OPT_verify_ignore_unexpected_EQ), *Diags, DiagMask); 2349 if (Args.hasArg(OPT_verify_ignore_unexpected)) 2350 DiagMask = DiagnosticLevelMask::All; 2351 Opts.setVerifyIgnoreUnexpected(DiagMask); 2352 if (Opts.TabStop == 0 || Opts.TabStop > DiagnosticOptions::MaxTabStop) { 2353 Opts.TabStop = DiagnosticOptions::DefaultTabStop; 2354 Diags->Report(diag::warn_ignoring_ftabstop_value) 2355 << Opts.TabStop << DiagnosticOptions::DefaultTabStop; 2356 } 2357 2358 addDiagnosticArgs(Args, OPT_W_Group, OPT_W_value_Group, Opts.Warnings); 2359 addDiagnosticArgs(Args, OPT_R_Group, OPT_R_value_Group, Opts.Remarks); 2360 2361 return Diags->getNumErrors() == NumErrorsBefore; 2362 } 2363 2364 /// Parse the argument to the -ftest-module-file-extension 2365 /// command-line argument. 2366 /// 2367 /// \returns true on error, false on success. 2368 static bool parseTestModuleFileExtensionArg(StringRef Arg, 2369 std::string &BlockName, 2370 unsigned &MajorVersion, 2371 unsigned &MinorVersion, 2372 bool &Hashed, 2373 std::string &UserInfo) { 2374 SmallVector<StringRef, 5> Args; 2375 Arg.split(Args, ':', 5); 2376 if (Args.size() < 5) 2377 return true; 2378 2379 BlockName = std::string(Args[0]); 2380 if (Args[1].getAsInteger(10, MajorVersion)) return true; 2381 if (Args[2].getAsInteger(10, MinorVersion)) return true; 2382 if (Args[3].getAsInteger(2, Hashed)) return true; 2383 if (Args.size() > 4) 2384 UserInfo = std::string(Args[4]); 2385 return false; 2386 } 2387 2388 /// Return a table that associates command line option specifiers with the 2389 /// frontend action. Note: The pair {frontend::PluginAction, OPT_plugin} is 2390 /// intentionally missing, as this case is handled separately from other 2391 /// frontend options. 2392 static const auto &getFrontendActionTable() { 2393 static const std::pair<frontend::ActionKind, unsigned> Table[] = { 2394 {frontend::ASTDeclList, OPT_ast_list}, 2395 2396 {frontend::ASTDump, OPT_ast_dump_all_EQ}, 2397 {frontend::ASTDump, OPT_ast_dump_all}, 2398 {frontend::ASTDump, OPT_ast_dump_EQ}, 2399 {frontend::ASTDump, OPT_ast_dump}, 2400 {frontend::ASTDump, OPT_ast_dump_lookups}, 2401 {frontend::ASTDump, OPT_ast_dump_decl_types}, 2402 2403 {frontend::ASTPrint, OPT_ast_print}, 2404 {frontend::ASTView, OPT_ast_view}, 2405 {frontend::DumpCompilerOptions, OPT_compiler_options_dump}, 2406 {frontend::DumpRawTokens, OPT_dump_raw_tokens}, 2407 {frontend::DumpTokens, OPT_dump_tokens}, 2408 {frontend::EmitAssembly, OPT_S}, 2409 {frontend::EmitBC, OPT_emit_llvm_bc}, 2410 {frontend::EmitHTML, OPT_emit_html}, 2411 {frontend::EmitLLVM, OPT_emit_llvm}, 2412 {frontend::EmitLLVMOnly, OPT_emit_llvm_only}, 2413 {frontend::EmitCodeGenOnly, OPT_emit_codegen_only}, 2414 {frontend::EmitObj, OPT_emit_obj}, 2415 {frontend::ExtractAPI, OPT_extract_api}, 2416 2417 {frontend::FixIt, OPT_fixit_EQ}, 2418 {frontend::FixIt, OPT_fixit}, 2419 2420 {frontend::GenerateModule, OPT_emit_module}, 2421 {frontend::GenerateModuleInterface, OPT_emit_module_interface}, 2422 {frontend::GenerateHeaderModule, OPT_emit_header_module}, 2423 {frontend::GenerateHeaderUnit, OPT_emit_header_unit}, 2424 {frontend::GeneratePCH, OPT_emit_pch}, 2425 {frontend::GenerateInterfaceStubs, OPT_emit_interface_stubs}, 2426 {frontend::InitOnly, OPT_init_only}, 2427 {frontend::ParseSyntaxOnly, OPT_fsyntax_only}, 2428 {frontend::ModuleFileInfo, OPT_module_file_info}, 2429 {frontend::VerifyPCH, OPT_verify_pch}, 2430 {frontend::PrintPreamble, OPT_print_preamble}, 2431 {frontend::PrintPreprocessedInput, OPT_E}, 2432 {frontend::TemplightDump, OPT_templight_dump}, 2433 {frontend::RewriteMacros, OPT_rewrite_macros}, 2434 {frontend::RewriteObjC, OPT_rewrite_objc}, 2435 {frontend::RewriteTest, OPT_rewrite_test}, 2436 {frontend::RunAnalysis, OPT_analyze}, 2437 {frontend::MigrateSource, OPT_migrate}, 2438 {frontend::RunPreprocessorOnly, OPT_Eonly}, 2439 {frontend::PrintDependencyDirectivesSourceMinimizerOutput, 2440 OPT_print_dependency_directives_minimized_source}, 2441 }; 2442 2443 return Table; 2444 } 2445 2446 /// Maps command line option to frontend action. 2447 static Optional<frontend::ActionKind> getFrontendAction(OptSpecifier &Opt) { 2448 for (const auto &ActionOpt : getFrontendActionTable()) 2449 if (ActionOpt.second == Opt.getID()) 2450 return ActionOpt.first; 2451 2452 return None; 2453 } 2454 2455 /// Maps frontend action to command line option. 2456 static Optional<OptSpecifier> 2457 getProgramActionOpt(frontend::ActionKind ProgramAction) { 2458 for (const auto &ActionOpt : getFrontendActionTable()) 2459 if (ActionOpt.first == ProgramAction) 2460 return OptSpecifier(ActionOpt.second); 2461 2462 return None; 2463 } 2464 2465 static void GenerateFrontendArgs(const FrontendOptions &Opts, 2466 SmallVectorImpl<const char *> &Args, 2467 CompilerInvocation::StringAllocator SA, 2468 bool IsHeader) { 2469 const FrontendOptions &FrontendOpts = Opts; 2470 #define FRONTEND_OPTION_WITH_MARSHALLING( \ 2471 PREFIX_TYPE, NAME, ID, KIND, GROUP, ALIAS, ALIASARGS, FLAGS, PARAM, \ 2472 HELPTEXT, METAVAR, VALUES, SPELLING, SHOULD_PARSE, ALWAYS_EMIT, KEYPATH, \ 2473 DEFAULT_VALUE, IMPLIED_CHECK, IMPLIED_VALUE, NORMALIZER, DENORMALIZER, \ 2474 MERGER, EXTRACTOR, TABLE_INDEX) \ 2475 GENERATE_OPTION_WITH_MARSHALLING( \ 2476 Args, SA, KIND, FLAGS, SPELLING, ALWAYS_EMIT, KEYPATH, DEFAULT_VALUE, \ 2477 IMPLIED_CHECK, IMPLIED_VALUE, DENORMALIZER, EXTRACTOR, TABLE_INDEX) 2478 #include "clang/Driver/Options.inc" 2479 #undef FRONTEND_OPTION_WITH_MARSHALLING 2480 2481 Optional<OptSpecifier> ProgramActionOpt = 2482 getProgramActionOpt(Opts.ProgramAction); 2483 2484 // Generating a simple flag covers most frontend actions. 2485 std::function<void()> GenerateProgramAction = [&]() { 2486 GenerateArg(Args, *ProgramActionOpt, SA); 2487 }; 2488 2489 if (!ProgramActionOpt) { 2490 // PluginAction is the only program action handled separately. 2491 assert(Opts.ProgramAction == frontend::PluginAction && 2492 "Frontend action without option."); 2493 GenerateProgramAction = [&]() { 2494 GenerateArg(Args, OPT_plugin, Opts.ActionName, SA); 2495 }; 2496 } 2497 2498 // FIXME: Simplify the complex 'AST dump' command line. 2499 if (Opts.ProgramAction == frontend::ASTDump) { 2500 GenerateProgramAction = [&]() { 2501 // ASTDumpLookups, ASTDumpDeclTypes and ASTDumpFilter are generated via 2502 // marshalling infrastructure. 2503 2504 if (Opts.ASTDumpFormat != ADOF_Default) { 2505 StringRef Format; 2506 switch (Opts.ASTDumpFormat) { 2507 case ADOF_Default: 2508 llvm_unreachable("Default AST dump format."); 2509 case ADOF_JSON: 2510 Format = "json"; 2511 break; 2512 } 2513 2514 if (Opts.ASTDumpAll) 2515 GenerateArg(Args, OPT_ast_dump_all_EQ, Format, SA); 2516 if (Opts.ASTDumpDecls) 2517 GenerateArg(Args, OPT_ast_dump_EQ, Format, SA); 2518 } else { 2519 if (Opts.ASTDumpAll) 2520 GenerateArg(Args, OPT_ast_dump_all, SA); 2521 if (Opts.ASTDumpDecls) 2522 GenerateArg(Args, OPT_ast_dump, SA); 2523 } 2524 }; 2525 } 2526 2527 if (Opts.ProgramAction == frontend::FixIt && !Opts.FixItSuffix.empty()) { 2528 GenerateProgramAction = [&]() { 2529 GenerateArg(Args, OPT_fixit_EQ, Opts.FixItSuffix, SA); 2530 }; 2531 } 2532 2533 GenerateProgramAction(); 2534 2535 for (const auto &PluginArgs : Opts.PluginArgs) { 2536 Option Opt = getDriverOptTable().getOption(OPT_plugin_arg); 2537 const char *Spelling = 2538 SA(Opt.getPrefix() + Opt.getName() + PluginArgs.first); 2539 for (const auto &PluginArg : PluginArgs.second) 2540 denormalizeString(Args, Spelling, SA, Opt.getKind(), 0, PluginArg); 2541 } 2542 2543 for (const auto &Ext : Opts.ModuleFileExtensions) 2544 if (auto *TestExt = dyn_cast_or_null<TestModuleFileExtension>(Ext.get())) 2545 GenerateArg(Args, OPT_ftest_module_file_extension_EQ, TestExt->str(), SA); 2546 2547 if (!Opts.CodeCompletionAt.FileName.empty()) 2548 GenerateArg(Args, OPT_code_completion_at, Opts.CodeCompletionAt.ToString(), 2549 SA); 2550 2551 for (const auto &Plugin : Opts.Plugins) 2552 GenerateArg(Args, OPT_load, Plugin, SA); 2553 2554 // ASTDumpDecls and ASTDumpAll already handled with ProgramAction. 2555 2556 for (const auto &ModuleFile : Opts.ModuleFiles) 2557 GenerateArg(Args, OPT_fmodule_file, ModuleFile, SA); 2558 2559 if (Opts.AuxTargetCPU.hasValue()) 2560 GenerateArg(Args, OPT_aux_target_cpu, *Opts.AuxTargetCPU, SA); 2561 2562 if (Opts.AuxTargetFeatures.hasValue()) 2563 for (const auto &Feature : *Opts.AuxTargetFeatures) 2564 GenerateArg(Args, OPT_aux_target_feature, Feature, SA); 2565 2566 { 2567 StringRef Preprocessed = Opts.DashX.isPreprocessed() ? "-cpp-output" : ""; 2568 StringRef ModuleMap = 2569 Opts.DashX.getFormat() == InputKind::ModuleMap ? "-module-map" : ""; 2570 StringRef HeaderUnit = ""; 2571 switch (Opts.DashX.getHeaderUnitKind()) { 2572 case InputKind::HeaderUnit_None: 2573 break; 2574 case InputKind::HeaderUnit_User: 2575 HeaderUnit = "-user"; 2576 break; 2577 case InputKind::HeaderUnit_System: 2578 HeaderUnit = "-system"; 2579 break; 2580 case InputKind::HeaderUnit_Abs: 2581 HeaderUnit = "-header-unit"; 2582 break; 2583 } 2584 StringRef Header = IsHeader ? "-header" : ""; 2585 2586 StringRef Lang; 2587 switch (Opts.DashX.getLanguage()) { 2588 case Language::C: 2589 Lang = "c"; 2590 break; 2591 case Language::OpenCL: 2592 Lang = "cl"; 2593 break; 2594 case Language::OpenCLCXX: 2595 Lang = "clcpp"; 2596 break; 2597 case Language::CUDA: 2598 Lang = "cuda"; 2599 break; 2600 case Language::HIP: 2601 Lang = "hip"; 2602 break; 2603 case Language::CXX: 2604 Lang = "c++"; 2605 break; 2606 case Language::ObjC: 2607 Lang = "objective-c"; 2608 break; 2609 case Language::ObjCXX: 2610 Lang = "objective-c++"; 2611 break; 2612 case Language::RenderScript: 2613 Lang = "renderscript"; 2614 break; 2615 case Language::Asm: 2616 Lang = "assembler-with-cpp"; 2617 break; 2618 case Language::Unknown: 2619 assert(Opts.DashX.getFormat() == InputKind::Precompiled && 2620 "Generating -x argument for unknown language (not precompiled)."); 2621 Lang = "ast"; 2622 break; 2623 case Language::LLVM_IR: 2624 Lang = "ir"; 2625 break; 2626 } 2627 2628 GenerateArg(Args, OPT_x, 2629 Lang + HeaderUnit + Header + ModuleMap + Preprocessed, SA); 2630 } 2631 2632 // OPT_INPUT has a unique class, generate it directly. 2633 for (const auto &Input : Opts.Inputs) 2634 Args.push_back(SA(Input.getFile())); 2635 } 2636 2637 static bool ParseFrontendArgs(FrontendOptions &Opts, ArgList &Args, 2638 DiagnosticsEngine &Diags, bool &IsHeaderFile) { 2639 unsigned NumErrorsBefore = Diags.getNumErrors(); 2640 2641 FrontendOptions &FrontendOpts = Opts; 2642 2643 #define FRONTEND_OPTION_WITH_MARSHALLING( \ 2644 PREFIX_TYPE, NAME, ID, KIND, GROUP, ALIAS, ALIASARGS, FLAGS, PARAM, \ 2645 HELPTEXT, METAVAR, VALUES, SPELLING, SHOULD_PARSE, ALWAYS_EMIT, KEYPATH, \ 2646 DEFAULT_VALUE, IMPLIED_CHECK, IMPLIED_VALUE, NORMALIZER, DENORMALIZER, \ 2647 MERGER, EXTRACTOR, TABLE_INDEX) \ 2648 PARSE_OPTION_WITH_MARSHALLING( \ 2649 Args, Diags, ID, FLAGS, PARAM, SHOULD_PARSE, KEYPATH, DEFAULT_VALUE, \ 2650 IMPLIED_CHECK, IMPLIED_VALUE, NORMALIZER, MERGER, TABLE_INDEX) 2651 #include "clang/Driver/Options.inc" 2652 #undef FRONTEND_OPTION_WITH_MARSHALLING 2653 2654 Opts.ProgramAction = frontend::ParseSyntaxOnly; 2655 if (const Arg *A = Args.getLastArg(OPT_Action_Group)) { 2656 OptSpecifier Opt = OptSpecifier(A->getOption().getID()); 2657 Optional<frontend::ActionKind> ProgramAction = getFrontendAction(Opt); 2658 assert(ProgramAction && "Option specifier not in Action_Group."); 2659 2660 if (ProgramAction == frontend::ASTDump && 2661 (Opt == OPT_ast_dump_all_EQ || Opt == OPT_ast_dump_EQ)) { 2662 unsigned Val = llvm::StringSwitch<unsigned>(A->getValue()) 2663 .CaseLower("default", ADOF_Default) 2664 .CaseLower("json", ADOF_JSON) 2665 .Default(std::numeric_limits<unsigned>::max()); 2666 2667 if (Val != std::numeric_limits<unsigned>::max()) 2668 Opts.ASTDumpFormat = static_cast<ASTDumpOutputFormat>(Val); 2669 else { 2670 Diags.Report(diag::err_drv_invalid_value) 2671 << A->getAsString(Args) << A->getValue(); 2672 Opts.ASTDumpFormat = ADOF_Default; 2673 } 2674 } 2675 2676 if (ProgramAction == frontend::FixIt && Opt == OPT_fixit_EQ) 2677 Opts.FixItSuffix = A->getValue(); 2678 2679 if (ProgramAction == frontend::GenerateInterfaceStubs) { 2680 StringRef ArgStr = 2681 Args.hasArg(OPT_interface_stub_version_EQ) 2682 ? Args.getLastArgValue(OPT_interface_stub_version_EQ) 2683 : "ifs-v1"; 2684 if (ArgStr == "experimental-yaml-elf-v1" || 2685 ArgStr == "experimental-ifs-v1" || ArgStr == "experimental-ifs-v2" || 2686 ArgStr == "experimental-tapi-elf-v1") { 2687 std::string ErrorMessage = 2688 "Invalid interface stub format: " + ArgStr.str() + 2689 " is deprecated."; 2690 Diags.Report(diag::err_drv_invalid_value) 2691 << "Must specify a valid interface stub format type, ie: " 2692 "-interface-stub-version=ifs-v1" 2693 << ErrorMessage; 2694 ProgramAction = frontend::ParseSyntaxOnly; 2695 } else if (!ArgStr.startswith("ifs-")) { 2696 std::string ErrorMessage = 2697 "Invalid interface stub format: " + ArgStr.str() + "."; 2698 Diags.Report(diag::err_drv_invalid_value) 2699 << "Must specify a valid interface stub format type, ie: " 2700 "-interface-stub-version=ifs-v1" 2701 << ErrorMessage; 2702 ProgramAction = frontend::ParseSyntaxOnly; 2703 } 2704 } 2705 2706 Opts.ProgramAction = *ProgramAction; 2707 } 2708 2709 if (const Arg* A = Args.getLastArg(OPT_plugin)) { 2710 Opts.Plugins.emplace_back(A->getValue(0)); 2711 Opts.ProgramAction = frontend::PluginAction; 2712 Opts.ActionName = A->getValue(); 2713 } 2714 for (const auto *AA : Args.filtered(OPT_plugin_arg)) 2715 Opts.PluginArgs[AA->getValue(0)].emplace_back(AA->getValue(1)); 2716 2717 for (const std::string &Arg : 2718 Args.getAllArgValues(OPT_ftest_module_file_extension_EQ)) { 2719 std::string BlockName; 2720 unsigned MajorVersion; 2721 unsigned MinorVersion; 2722 bool Hashed; 2723 std::string UserInfo; 2724 if (parseTestModuleFileExtensionArg(Arg, BlockName, MajorVersion, 2725 MinorVersion, Hashed, UserInfo)) { 2726 Diags.Report(diag::err_test_module_file_extension_format) << Arg; 2727 2728 continue; 2729 } 2730 2731 // Add the testing module file extension. 2732 Opts.ModuleFileExtensions.push_back( 2733 std::make_shared<TestModuleFileExtension>( 2734 BlockName, MajorVersion, MinorVersion, Hashed, UserInfo)); 2735 } 2736 2737 if (const Arg *A = Args.getLastArg(OPT_code_completion_at)) { 2738 Opts.CodeCompletionAt = 2739 ParsedSourceLocation::FromString(A->getValue()); 2740 if (Opts.CodeCompletionAt.FileName.empty()) 2741 Diags.Report(diag::err_drv_invalid_value) 2742 << A->getAsString(Args) << A->getValue(); 2743 } 2744 2745 Opts.Plugins = Args.getAllArgValues(OPT_load); 2746 Opts.ASTDumpDecls = Args.hasArg(OPT_ast_dump, OPT_ast_dump_EQ); 2747 Opts.ASTDumpAll = Args.hasArg(OPT_ast_dump_all, OPT_ast_dump_all_EQ); 2748 // Only the -fmodule-file=<file> form. 2749 for (const auto *A : Args.filtered(OPT_fmodule_file)) { 2750 StringRef Val = A->getValue(); 2751 if (!Val.contains('=')) 2752 Opts.ModuleFiles.push_back(std::string(Val)); 2753 } 2754 2755 if (Opts.ProgramAction != frontend::GenerateModule && Opts.IsSystemModule) 2756 Diags.Report(diag::err_drv_argument_only_allowed_with) << "-fsystem-module" 2757 << "-emit-module"; 2758 2759 if (Args.hasArg(OPT_aux_target_cpu)) 2760 Opts.AuxTargetCPU = std::string(Args.getLastArgValue(OPT_aux_target_cpu)); 2761 if (Args.hasArg(OPT_aux_target_feature)) 2762 Opts.AuxTargetFeatures = Args.getAllArgValues(OPT_aux_target_feature); 2763 2764 if (Opts.ARCMTAction != FrontendOptions::ARCMT_None && 2765 Opts.ObjCMTAction != FrontendOptions::ObjCMT_None) { 2766 Diags.Report(diag::err_drv_argument_not_allowed_with) 2767 << "ARC migration" << "ObjC migration"; 2768 } 2769 2770 InputKind DashX(Language::Unknown); 2771 if (const Arg *A = Args.getLastArg(OPT_x)) { 2772 StringRef XValue = A->getValue(); 2773 2774 // Parse suffixes: 2775 // '<lang>(-[{header-unit,user,system}-]header|[-module-map][-cpp-output])'. 2776 // FIXME: Supporting '<lang>-header-cpp-output' would be useful. 2777 bool Preprocessed = XValue.consume_back("-cpp-output"); 2778 bool ModuleMap = XValue.consume_back("-module-map"); 2779 // Detect and consume the header indicator. 2780 bool IsHeader = 2781 XValue != "precompiled-header" && XValue.consume_back("-header"); 2782 2783 // If we have c++-{user,system}-header, that indicates a header unit input 2784 // likewise, if the user put -fmodule-header together with a header with an 2785 // absolute path (header-unit-header). 2786 InputKind::HeaderUnitKind HUK = InputKind::HeaderUnit_None; 2787 if (IsHeader || Preprocessed) { 2788 if (XValue.consume_back("-header-unit")) 2789 HUK = InputKind::HeaderUnit_Abs; 2790 else if (XValue.consume_back("-system")) 2791 HUK = InputKind::HeaderUnit_System; 2792 else if (XValue.consume_back("-user")) 2793 HUK = InputKind::HeaderUnit_User; 2794 } 2795 2796 // The value set by this processing is an un-preprocessed source which is 2797 // not intended to be a module map or header unit. 2798 IsHeaderFile = IsHeader && !Preprocessed && !ModuleMap && 2799 HUK == InputKind::HeaderUnit_None; 2800 2801 // Principal languages. 2802 DashX = llvm::StringSwitch<InputKind>(XValue) 2803 .Case("c", Language::C) 2804 .Case("cl", Language::OpenCL) 2805 .Case("clcpp", Language::OpenCLCXX) 2806 .Case("cuda", Language::CUDA) 2807 .Case("hip", Language::HIP) 2808 .Case("c++", Language::CXX) 2809 .Case("objective-c", Language::ObjC) 2810 .Case("objective-c++", Language::ObjCXX) 2811 .Case("renderscript", Language::RenderScript) 2812 .Default(Language::Unknown); 2813 2814 // "objc[++]-cpp-output" is an acceptable synonym for 2815 // "objective-c[++]-cpp-output". 2816 if (DashX.isUnknown() && Preprocessed && !IsHeaderFile && !ModuleMap && 2817 HUK == InputKind::HeaderUnit_None) 2818 DashX = llvm::StringSwitch<InputKind>(XValue) 2819 .Case("objc", Language::ObjC) 2820 .Case("objc++", Language::ObjCXX) 2821 .Default(Language::Unknown); 2822 2823 // Some special cases cannot be combined with suffixes. 2824 if (DashX.isUnknown() && !Preprocessed && !IsHeaderFile && !ModuleMap && 2825 HUK == InputKind::HeaderUnit_None) 2826 DashX = llvm::StringSwitch<InputKind>(XValue) 2827 .Case("cpp-output", InputKind(Language::C).getPreprocessed()) 2828 .Case("assembler-with-cpp", Language::Asm) 2829 .Cases("ast", "pcm", "precompiled-header", 2830 InputKind(Language::Unknown, InputKind::Precompiled)) 2831 .Case("ir", Language::LLVM_IR) 2832 .Default(Language::Unknown); 2833 2834 if (DashX.isUnknown()) 2835 Diags.Report(diag::err_drv_invalid_value) 2836 << A->getAsString(Args) << A->getValue(); 2837 2838 if (Preprocessed) 2839 DashX = DashX.getPreprocessed(); 2840 // A regular header is considered mutually exclusive with a header unit. 2841 if (HUK != InputKind::HeaderUnit_None) { 2842 DashX = DashX.withHeaderUnit(HUK); 2843 IsHeaderFile = true; 2844 } else if (IsHeaderFile) 2845 DashX = DashX.getHeader(); 2846 if (ModuleMap) 2847 DashX = DashX.withFormat(InputKind::ModuleMap); 2848 } 2849 2850 // '-' is the default input if none is given. 2851 std::vector<std::string> Inputs = Args.getAllArgValues(OPT_INPUT); 2852 Opts.Inputs.clear(); 2853 if (Inputs.empty()) 2854 Inputs.push_back("-"); 2855 2856 if (DashX.getHeaderUnitKind() != InputKind::HeaderUnit_None && 2857 Inputs.size() > 1) 2858 Diags.Report(diag::err_drv_header_unit_extra_inputs) << Inputs[1]; 2859 2860 for (unsigned i = 0, e = Inputs.size(); i != e; ++i) { 2861 InputKind IK = DashX; 2862 if (IK.isUnknown()) { 2863 IK = FrontendOptions::getInputKindForExtension( 2864 StringRef(Inputs[i]).rsplit('.').second); 2865 // FIXME: Warn on this? 2866 if (IK.isUnknown()) 2867 IK = Language::C; 2868 // FIXME: Remove this hack. 2869 if (i == 0) 2870 DashX = IK; 2871 } 2872 2873 bool IsSystem = false; 2874 2875 // The -emit-module action implicitly takes a module map. 2876 if (Opts.ProgramAction == frontend::GenerateModule && 2877 IK.getFormat() == InputKind::Source) { 2878 IK = IK.withFormat(InputKind::ModuleMap); 2879 IsSystem = Opts.IsSystemModule; 2880 } 2881 2882 Opts.Inputs.emplace_back(std::move(Inputs[i]), IK, IsSystem); 2883 } 2884 2885 Opts.DashX = DashX; 2886 2887 return Diags.getNumErrors() == NumErrorsBefore; 2888 } 2889 2890 std::string CompilerInvocation::GetResourcesPath(const char *Argv0, 2891 void *MainAddr) { 2892 std::string ClangExecutable = 2893 llvm::sys::fs::getMainExecutable(Argv0, MainAddr); 2894 return Driver::GetResourcesPath(ClangExecutable, CLANG_RESOURCE_DIR); 2895 } 2896 2897 static void GenerateHeaderSearchArgs(HeaderSearchOptions &Opts, 2898 SmallVectorImpl<const char *> &Args, 2899 CompilerInvocation::StringAllocator SA) { 2900 const HeaderSearchOptions *HeaderSearchOpts = &Opts; 2901 #define HEADER_SEARCH_OPTION_WITH_MARSHALLING( \ 2902 PREFIX_TYPE, NAME, ID, KIND, GROUP, ALIAS, ALIASARGS, FLAGS, PARAM, \ 2903 HELPTEXT, METAVAR, VALUES, SPELLING, SHOULD_PARSE, ALWAYS_EMIT, KEYPATH, \ 2904 DEFAULT_VALUE, IMPLIED_CHECK, IMPLIED_VALUE, NORMALIZER, DENORMALIZER, \ 2905 MERGER, EXTRACTOR, TABLE_INDEX) \ 2906 GENERATE_OPTION_WITH_MARSHALLING( \ 2907 Args, SA, KIND, FLAGS, SPELLING, ALWAYS_EMIT, KEYPATH, DEFAULT_VALUE, \ 2908 IMPLIED_CHECK, IMPLIED_VALUE, DENORMALIZER, EXTRACTOR, TABLE_INDEX) 2909 #include "clang/Driver/Options.inc" 2910 #undef HEADER_SEARCH_OPTION_WITH_MARSHALLING 2911 2912 if (Opts.UseLibcxx) 2913 GenerateArg(Args, OPT_stdlib_EQ, "libc++", SA); 2914 2915 if (!Opts.ModuleCachePath.empty()) 2916 GenerateArg(Args, OPT_fmodules_cache_path, Opts.ModuleCachePath, SA); 2917 2918 for (const auto &File : Opts.PrebuiltModuleFiles) 2919 GenerateArg(Args, OPT_fmodule_file, File.first + "=" + File.second, SA); 2920 2921 for (const auto &Path : Opts.PrebuiltModulePaths) 2922 GenerateArg(Args, OPT_fprebuilt_module_path, Path, SA); 2923 2924 for (const auto &Macro : Opts.ModulesIgnoreMacros) 2925 GenerateArg(Args, OPT_fmodules_ignore_macro, Macro.val(), SA); 2926 2927 auto Matches = [](const HeaderSearchOptions::Entry &Entry, 2928 llvm::ArrayRef<frontend::IncludeDirGroup> Groups, 2929 llvm::Optional<bool> IsFramework, 2930 llvm::Optional<bool> IgnoreSysRoot) { 2931 return llvm::is_contained(Groups, Entry.Group) && 2932 (!IsFramework || (Entry.IsFramework == *IsFramework)) && 2933 (!IgnoreSysRoot || (Entry.IgnoreSysRoot == *IgnoreSysRoot)); 2934 }; 2935 2936 auto It = Opts.UserEntries.begin(); 2937 auto End = Opts.UserEntries.end(); 2938 2939 // Add -I..., -F..., and -index-header-map options in order. 2940 for (; It < End && 2941 Matches(*It, {frontend::IndexHeaderMap, frontend::Angled}, None, true); 2942 ++It) { 2943 OptSpecifier Opt = [It, Matches]() { 2944 if (Matches(*It, frontend::IndexHeaderMap, true, true)) 2945 return OPT_F; 2946 if (Matches(*It, frontend::IndexHeaderMap, false, true)) 2947 return OPT_I; 2948 if (Matches(*It, frontend::Angled, true, true)) 2949 return OPT_F; 2950 if (Matches(*It, frontend::Angled, false, true)) 2951 return OPT_I; 2952 llvm_unreachable("Unexpected HeaderSearchOptions::Entry."); 2953 }(); 2954 2955 if (It->Group == frontend::IndexHeaderMap) 2956 GenerateArg(Args, OPT_index_header_map, SA); 2957 GenerateArg(Args, Opt, It->Path, SA); 2958 }; 2959 2960 // Note: some paths that came from "[-iprefix=xx] -iwithprefixbefore=yy" may 2961 // have already been generated as "-I[xx]yy". If that's the case, their 2962 // position on command line was such that this has no semantic impact on 2963 // include paths. 2964 for (; It < End && 2965 Matches(*It, {frontend::After, frontend::Angled}, false, true); 2966 ++It) { 2967 OptSpecifier Opt = 2968 It->Group == frontend::After ? OPT_iwithprefix : OPT_iwithprefixbefore; 2969 GenerateArg(Args, Opt, It->Path, SA); 2970 } 2971 2972 // Note: Some paths that came from "-idirafter=xxyy" may have already been 2973 // generated as "-iwithprefix=xxyy". If that's the case, their position on 2974 // command line was such that this has no semantic impact on include paths. 2975 for (; It < End && Matches(*It, {frontend::After}, false, true); ++It) 2976 GenerateArg(Args, OPT_idirafter, It->Path, SA); 2977 for (; It < End && Matches(*It, {frontend::Quoted}, false, true); ++It) 2978 GenerateArg(Args, OPT_iquote, It->Path, SA); 2979 for (; It < End && Matches(*It, {frontend::System}, false, None); ++It) 2980 GenerateArg(Args, It->IgnoreSysRoot ? OPT_isystem : OPT_iwithsysroot, 2981 It->Path, SA); 2982 for (; It < End && Matches(*It, {frontend::System}, true, true); ++It) 2983 GenerateArg(Args, OPT_iframework, It->Path, SA); 2984 for (; It < End && Matches(*It, {frontend::System}, true, false); ++It) 2985 GenerateArg(Args, OPT_iframeworkwithsysroot, It->Path, SA); 2986 2987 // Add the paths for the various language specific isystem flags. 2988 for (; It < End && Matches(*It, {frontend::CSystem}, false, true); ++It) 2989 GenerateArg(Args, OPT_c_isystem, It->Path, SA); 2990 for (; It < End && Matches(*It, {frontend::CXXSystem}, false, true); ++It) 2991 GenerateArg(Args, OPT_cxx_isystem, It->Path, SA); 2992 for (; It < End && Matches(*It, {frontend::ObjCSystem}, false, true); ++It) 2993 GenerateArg(Args, OPT_objc_isystem, It->Path, SA); 2994 for (; It < End && Matches(*It, {frontend::ObjCXXSystem}, false, true); ++It) 2995 GenerateArg(Args, OPT_objcxx_isystem, It->Path, SA); 2996 2997 // Add the internal paths from a driver that detects standard include paths. 2998 // Note: Some paths that came from "-internal-isystem" arguments may have 2999 // already been generated as "-isystem". If that's the case, their position on 3000 // command line was such that this has no semantic impact on include paths. 3001 for (; It < End && 3002 Matches(*It, {frontend::System, frontend::ExternCSystem}, false, true); 3003 ++It) { 3004 OptSpecifier Opt = It->Group == frontend::System 3005 ? OPT_internal_isystem 3006 : OPT_internal_externc_isystem; 3007 GenerateArg(Args, Opt, It->Path, SA); 3008 } 3009 3010 assert(It == End && "Unhandled HeaderSearchOption::Entry."); 3011 3012 // Add the path prefixes which are implicitly treated as being system headers. 3013 for (const auto &P : Opts.SystemHeaderPrefixes) { 3014 OptSpecifier Opt = P.IsSystemHeader ? OPT_system_header_prefix 3015 : OPT_no_system_header_prefix; 3016 GenerateArg(Args, Opt, P.Prefix, SA); 3017 } 3018 3019 for (const std::string &F : Opts.VFSOverlayFiles) 3020 GenerateArg(Args, OPT_ivfsoverlay, F, SA); 3021 } 3022 3023 static bool ParseHeaderSearchArgs(HeaderSearchOptions &Opts, ArgList &Args, 3024 DiagnosticsEngine &Diags, 3025 const std::string &WorkingDir) { 3026 unsigned NumErrorsBefore = Diags.getNumErrors(); 3027 3028 HeaderSearchOptions *HeaderSearchOpts = &Opts; 3029 3030 #define HEADER_SEARCH_OPTION_WITH_MARSHALLING( \ 3031 PREFIX_TYPE, NAME, ID, KIND, GROUP, ALIAS, ALIASARGS, FLAGS, PARAM, \ 3032 HELPTEXT, METAVAR, VALUES, SPELLING, SHOULD_PARSE, ALWAYS_EMIT, KEYPATH, \ 3033 DEFAULT_VALUE, IMPLIED_CHECK, IMPLIED_VALUE, NORMALIZER, DENORMALIZER, \ 3034 MERGER, EXTRACTOR, TABLE_INDEX) \ 3035 PARSE_OPTION_WITH_MARSHALLING( \ 3036 Args, Diags, ID, FLAGS, PARAM, SHOULD_PARSE, KEYPATH, DEFAULT_VALUE, \ 3037 IMPLIED_CHECK, IMPLIED_VALUE, NORMALIZER, MERGER, TABLE_INDEX) 3038 #include "clang/Driver/Options.inc" 3039 #undef HEADER_SEARCH_OPTION_WITH_MARSHALLING 3040 3041 if (const Arg *A = Args.getLastArg(OPT_stdlib_EQ)) 3042 Opts.UseLibcxx = (strcmp(A->getValue(), "libc++") == 0); 3043 3044 // Canonicalize -fmodules-cache-path before storing it. 3045 SmallString<128> P(Args.getLastArgValue(OPT_fmodules_cache_path)); 3046 if (!(P.empty() || llvm::sys::path::is_absolute(P))) { 3047 if (WorkingDir.empty()) 3048 llvm::sys::fs::make_absolute(P); 3049 else 3050 llvm::sys::fs::make_absolute(WorkingDir, P); 3051 } 3052 llvm::sys::path::remove_dots(P); 3053 Opts.ModuleCachePath = std::string(P.str()); 3054 3055 // Only the -fmodule-file=<name>=<file> form. 3056 for (const auto *A : Args.filtered(OPT_fmodule_file)) { 3057 StringRef Val = A->getValue(); 3058 if (Val.contains('=')) { 3059 auto Split = Val.split('='); 3060 Opts.PrebuiltModuleFiles.insert( 3061 {std::string(Split.first), std::string(Split.second)}); 3062 } 3063 } 3064 for (const auto *A : Args.filtered(OPT_fprebuilt_module_path)) 3065 Opts.AddPrebuiltModulePath(A->getValue()); 3066 3067 for (const auto *A : Args.filtered(OPT_fmodules_ignore_macro)) { 3068 StringRef MacroDef = A->getValue(); 3069 Opts.ModulesIgnoreMacros.insert( 3070 llvm::CachedHashString(MacroDef.split('=').first)); 3071 } 3072 3073 // Add -I..., -F..., and -index-header-map options in order. 3074 bool IsIndexHeaderMap = false; 3075 bool IsSysrootSpecified = 3076 Args.hasArg(OPT__sysroot_EQ) || Args.hasArg(OPT_isysroot); 3077 for (const auto *A : Args.filtered(OPT_I, OPT_F, OPT_index_header_map)) { 3078 if (A->getOption().matches(OPT_index_header_map)) { 3079 // -index-header-map applies to the next -I or -F. 3080 IsIndexHeaderMap = true; 3081 continue; 3082 } 3083 3084 frontend::IncludeDirGroup Group = 3085 IsIndexHeaderMap ? frontend::IndexHeaderMap : frontend::Angled; 3086 3087 bool IsFramework = A->getOption().matches(OPT_F); 3088 std::string Path = A->getValue(); 3089 3090 if (IsSysrootSpecified && !IsFramework && A->getValue()[0] == '=') { 3091 SmallString<32> Buffer; 3092 llvm::sys::path::append(Buffer, Opts.Sysroot, 3093 llvm::StringRef(A->getValue()).substr(1)); 3094 Path = std::string(Buffer.str()); 3095 } 3096 3097 Opts.AddPath(Path, Group, IsFramework, 3098 /*IgnoreSysroot*/ true); 3099 IsIndexHeaderMap = false; 3100 } 3101 3102 // Add -iprefix/-iwithprefix/-iwithprefixbefore options. 3103 StringRef Prefix = ""; // FIXME: This isn't the correct default prefix. 3104 for (const auto *A : 3105 Args.filtered(OPT_iprefix, OPT_iwithprefix, OPT_iwithprefixbefore)) { 3106 if (A->getOption().matches(OPT_iprefix)) 3107 Prefix = A->getValue(); 3108 else if (A->getOption().matches(OPT_iwithprefix)) 3109 Opts.AddPath(Prefix.str() + A->getValue(), frontend::After, false, true); 3110 else 3111 Opts.AddPath(Prefix.str() + A->getValue(), frontend::Angled, false, true); 3112 } 3113 3114 for (const auto *A : Args.filtered(OPT_idirafter)) 3115 Opts.AddPath(A->getValue(), frontend::After, false, true); 3116 for (const auto *A : Args.filtered(OPT_iquote)) 3117 Opts.AddPath(A->getValue(), frontend::Quoted, false, true); 3118 for (const auto *A : Args.filtered(OPT_isystem, OPT_iwithsysroot)) 3119 Opts.AddPath(A->getValue(), frontend::System, false, 3120 !A->getOption().matches(OPT_iwithsysroot)); 3121 for (const auto *A : Args.filtered(OPT_iframework)) 3122 Opts.AddPath(A->getValue(), frontend::System, true, true); 3123 for (const auto *A : Args.filtered(OPT_iframeworkwithsysroot)) 3124 Opts.AddPath(A->getValue(), frontend::System, /*IsFramework=*/true, 3125 /*IgnoreSysRoot=*/false); 3126 3127 // Add the paths for the various language specific isystem flags. 3128 for (const auto *A : Args.filtered(OPT_c_isystem)) 3129 Opts.AddPath(A->getValue(), frontend::CSystem, false, true); 3130 for (const auto *A : Args.filtered(OPT_cxx_isystem)) 3131 Opts.AddPath(A->getValue(), frontend::CXXSystem, false, true); 3132 for (const auto *A : Args.filtered(OPT_objc_isystem)) 3133 Opts.AddPath(A->getValue(), frontend::ObjCSystem, false,true); 3134 for (const auto *A : Args.filtered(OPT_objcxx_isystem)) 3135 Opts.AddPath(A->getValue(), frontend::ObjCXXSystem, false, true); 3136 3137 // Add the internal paths from a driver that detects standard include paths. 3138 for (const auto *A : 3139 Args.filtered(OPT_internal_isystem, OPT_internal_externc_isystem)) { 3140 frontend::IncludeDirGroup Group = frontend::System; 3141 if (A->getOption().matches(OPT_internal_externc_isystem)) 3142 Group = frontend::ExternCSystem; 3143 Opts.AddPath(A->getValue(), Group, false, true); 3144 } 3145 3146 // Add the path prefixes which are implicitly treated as being system headers. 3147 for (const auto *A : 3148 Args.filtered(OPT_system_header_prefix, OPT_no_system_header_prefix)) 3149 Opts.AddSystemHeaderPrefix( 3150 A->getValue(), A->getOption().matches(OPT_system_header_prefix)); 3151 3152 for (const auto *A : Args.filtered(OPT_ivfsoverlay)) 3153 Opts.AddVFSOverlayFile(A->getValue()); 3154 3155 return Diags.getNumErrors() == NumErrorsBefore; 3156 } 3157 3158 void CompilerInvocation::setLangDefaults(LangOptions &Opts, InputKind IK, 3159 const llvm::Triple &T, 3160 std::vector<std::string> &Includes, 3161 LangStandard::Kind LangStd) { 3162 // Set some properties which depend solely on the input kind; it would be nice 3163 // to move these to the language standard, and have the driver resolve the 3164 // input kind + language standard. 3165 // 3166 // FIXME: Perhaps a better model would be for a single source file to have 3167 // multiple language standards (C / C++ std, ObjC std, OpenCL std, OpenMP std) 3168 // simultaneously active? 3169 if (IK.getLanguage() == Language::Asm) { 3170 Opts.AsmPreprocessor = 1; 3171 } else if (IK.isObjectiveC()) { 3172 Opts.ObjC = 1; 3173 } 3174 3175 if (LangStd == LangStandard::lang_unspecified) { 3176 // Based on the base language, pick one. 3177 switch (IK.getLanguage()) { 3178 case Language::Unknown: 3179 case Language::LLVM_IR: 3180 llvm_unreachable("Invalid input kind!"); 3181 case Language::OpenCL: 3182 LangStd = LangStandard::lang_opencl12; 3183 break; 3184 case Language::OpenCLCXX: 3185 LangStd = LangStandard::lang_openclcpp10; 3186 break; 3187 case Language::CUDA: 3188 LangStd = LangStandard::lang_cuda; 3189 break; 3190 case Language::Asm: 3191 case Language::C: 3192 #if defined(CLANG_DEFAULT_STD_C) 3193 LangStd = CLANG_DEFAULT_STD_C; 3194 #else 3195 // The PS4 uses C99 as the default C standard. 3196 if (T.isPS4()) 3197 LangStd = LangStandard::lang_gnu99; 3198 else 3199 LangStd = LangStandard::lang_gnu17; 3200 #endif 3201 break; 3202 case Language::ObjC: 3203 #if defined(CLANG_DEFAULT_STD_C) 3204 LangStd = CLANG_DEFAULT_STD_C; 3205 #else 3206 LangStd = LangStandard::lang_gnu11; 3207 #endif 3208 break; 3209 case Language::CXX: 3210 case Language::ObjCXX: 3211 #if defined(CLANG_DEFAULT_STD_CXX) 3212 LangStd = CLANG_DEFAULT_STD_CXX; 3213 #else 3214 LangStd = LangStandard::lang_gnucxx14; 3215 #endif 3216 break; 3217 case Language::RenderScript: 3218 LangStd = LangStandard::lang_c99; 3219 break; 3220 case Language::HIP: 3221 LangStd = LangStandard::lang_hip; 3222 break; 3223 } 3224 } 3225 3226 const LangStandard &Std = LangStandard::getLangStandardForKind(LangStd); 3227 Opts.LangStd = LangStd; 3228 Opts.LineComment = Std.hasLineComments(); 3229 Opts.C99 = Std.isC99(); 3230 Opts.C11 = Std.isC11(); 3231 Opts.C17 = Std.isC17(); 3232 Opts.C2x = Std.isC2x(); 3233 Opts.CPlusPlus = Std.isCPlusPlus(); 3234 Opts.CPlusPlus11 = Std.isCPlusPlus11(); 3235 Opts.CPlusPlus14 = Std.isCPlusPlus14(); 3236 Opts.CPlusPlus17 = Std.isCPlusPlus17(); 3237 Opts.CPlusPlus20 = Std.isCPlusPlus20(); 3238 Opts.CPlusPlus2b = Std.isCPlusPlus2b(); 3239 Opts.GNUMode = Std.isGNUMode(); 3240 Opts.GNUCVersion = 0; 3241 Opts.HexFloats = Std.hasHexFloats(); 3242 Opts.ImplicitInt = Std.hasImplicitInt(); 3243 3244 // Set OpenCL Version. 3245 Opts.OpenCL = Std.isOpenCL(); 3246 if (LangStd == LangStandard::lang_opencl10) 3247 Opts.OpenCLVersion = 100; 3248 else if (LangStd == LangStandard::lang_opencl11) 3249 Opts.OpenCLVersion = 110; 3250 else if (LangStd == LangStandard::lang_opencl12) 3251 Opts.OpenCLVersion = 120; 3252 else if (LangStd == LangStandard::lang_opencl20) 3253 Opts.OpenCLVersion = 200; 3254 else if (LangStd == LangStandard::lang_opencl30) 3255 Opts.OpenCLVersion = 300; 3256 else if (LangStd == LangStandard::lang_openclcpp10) 3257 Opts.OpenCLCPlusPlusVersion = 100; 3258 else if (LangStd == LangStandard::lang_openclcpp2021) 3259 Opts.OpenCLCPlusPlusVersion = 202100; 3260 3261 // OpenCL has some additional defaults. 3262 if (Opts.OpenCL) { 3263 Opts.AltiVec = 0; 3264 Opts.ZVector = 0; 3265 Opts.setDefaultFPContractMode(LangOptions::FPM_On); 3266 Opts.OpenCLCPlusPlus = Opts.CPlusPlus; 3267 Opts.OpenCLPipes = Opts.getOpenCLCompatibleVersion() == 200; 3268 Opts.OpenCLGenericAddressSpace = Opts.getOpenCLCompatibleVersion() == 200; 3269 3270 // Include default header file for OpenCL. 3271 if (Opts.IncludeDefaultHeader) { 3272 if (Opts.DeclareOpenCLBuiltins) { 3273 // Only include base header file for builtin types and constants. 3274 Includes.push_back("opencl-c-base.h"); 3275 } else { 3276 Includes.push_back("opencl-c.h"); 3277 } 3278 } 3279 } 3280 3281 Opts.HIP = IK.getLanguage() == Language::HIP; 3282 Opts.CUDA = IK.getLanguage() == Language::CUDA || Opts.HIP; 3283 if (Opts.HIP) { 3284 // HIP toolchain does not support 'Fast' FPOpFusion in backends since it 3285 // fuses multiplication/addition instructions without contract flag from 3286 // device library functions in LLVM bitcode, which causes accuracy loss in 3287 // certain math functions, e.g. tan(-1e20) becomes -0.933 instead of 0.8446. 3288 // For device library functions in bitcode to work, 'Strict' or 'Standard' 3289 // FPOpFusion options in backends is needed. Therefore 'fast-honor-pragmas' 3290 // FP contract option is used to allow fuse across statements in frontend 3291 // whereas respecting contract flag in backend. 3292 Opts.setDefaultFPContractMode(LangOptions::FPM_FastHonorPragmas); 3293 } else if (Opts.CUDA) { 3294 // Allow fuse across statements disregarding pragmas. 3295 Opts.setDefaultFPContractMode(LangOptions::FPM_Fast); 3296 } 3297 3298 Opts.RenderScript = IK.getLanguage() == Language::RenderScript; 3299 3300 // OpenCL, C++ and C2x have bool, true, false keywords. 3301 Opts.Bool = Opts.OpenCL || Opts.CPlusPlus || Opts.C2x; 3302 3303 // OpenCL has half keyword 3304 Opts.Half = Opts.OpenCL; 3305 } 3306 3307 /// Check if input file kind and language standard are compatible. 3308 static bool IsInputCompatibleWithStandard(InputKind IK, 3309 const LangStandard &S) { 3310 switch (IK.getLanguage()) { 3311 case Language::Unknown: 3312 case Language::LLVM_IR: 3313 llvm_unreachable("should not parse language flags for this input"); 3314 3315 case Language::C: 3316 case Language::ObjC: 3317 case Language::RenderScript: 3318 return S.getLanguage() == Language::C; 3319 3320 case Language::OpenCL: 3321 return S.getLanguage() == Language::OpenCL || 3322 S.getLanguage() == Language::OpenCLCXX; 3323 3324 case Language::OpenCLCXX: 3325 return S.getLanguage() == Language::OpenCLCXX; 3326 3327 case Language::CXX: 3328 case Language::ObjCXX: 3329 return S.getLanguage() == Language::CXX; 3330 3331 case Language::CUDA: 3332 // FIXME: What -std= values should be permitted for CUDA compilations? 3333 return S.getLanguage() == Language::CUDA || 3334 S.getLanguage() == Language::CXX; 3335 3336 case Language::HIP: 3337 return S.getLanguage() == Language::CXX || S.getLanguage() == Language::HIP; 3338 3339 case Language::Asm: 3340 // Accept (and ignore) all -std= values. 3341 // FIXME: The -std= value is not ignored; it affects the tokenization 3342 // and preprocessing rules if we're preprocessing this asm input. 3343 return true; 3344 } 3345 3346 llvm_unreachable("unexpected input language"); 3347 } 3348 3349 /// Get language name for given input kind. 3350 static StringRef GetInputKindName(InputKind IK) { 3351 switch (IK.getLanguage()) { 3352 case Language::C: 3353 return "C"; 3354 case Language::ObjC: 3355 return "Objective-C"; 3356 case Language::CXX: 3357 return "C++"; 3358 case Language::ObjCXX: 3359 return "Objective-C++"; 3360 case Language::OpenCL: 3361 return "OpenCL"; 3362 case Language::OpenCLCXX: 3363 return "C++ for OpenCL"; 3364 case Language::CUDA: 3365 return "CUDA"; 3366 case Language::RenderScript: 3367 return "RenderScript"; 3368 case Language::HIP: 3369 return "HIP"; 3370 3371 case Language::Asm: 3372 return "Asm"; 3373 case Language::LLVM_IR: 3374 return "LLVM IR"; 3375 3376 case Language::Unknown: 3377 break; 3378 } 3379 llvm_unreachable("unknown input language"); 3380 } 3381 3382 void CompilerInvocation::GenerateLangArgs(const LangOptions &Opts, 3383 SmallVectorImpl<const char *> &Args, 3384 StringAllocator SA, 3385 const llvm::Triple &T, InputKind IK) { 3386 if (IK.getFormat() == InputKind::Precompiled || 3387 IK.getLanguage() == Language::LLVM_IR) { 3388 if (Opts.ObjCAutoRefCount) 3389 GenerateArg(Args, OPT_fobjc_arc, SA); 3390 if (Opts.PICLevel != 0) 3391 GenerateArg(Args, OPT_pic_level, Twine(Opts.PICLevel), SA); 3392 if (Opts.PIE) 3393 GenerateArg(Args, OPT_pic_is_pie, SA); 3394 for (StringRef Sanitizer : serializeSanitizerKinds(Opts.Sanitize)) 3395 GenerateArg(Args, OPT_fsanitize_EQ, Sanitizer, SA); 3396 3397 return; 3398 } 3399 3400 OptSpecifier StdOpt; 3401 switch (Opts.LangStd) { 3402 case LangStandard::lang_opencl10: 3403 case LangStandard::lang_opencl11: 3404 case LangStandard::lang_opencl12: 3405 case LangStandard::lang_opencl20: 3406 case LangStandard::lang_opencl30: 3407 case LangStandard::lang_openclcpp10: 3408 case LangStandard::lang_openclcpp2021: 3409 StdOpt = OPT_cl_std_EQ; 3410 break; 3411 default: 3412 StdOpt = OPT_std_EQ; 3413 break; 3414 } 3415 3416 auto LangStandard = LangStandard::getLangStandardForKind(Opts.LangStd); 3417 GenerateArg(Args, StdOpt, LangStandard.getName(), SA); 3418 3419 if (Opts.IncludeDefaultHeader) 3420 GenerateArg(Args, OPT_finclude_default_header, SA); 3421 if (Opts.DeclareOpenCLBuiltins) 3422 GenerateArg(Args, OPT_fdeclare_opencl_builtins, SA); 3423 3424 const LangOptions *LangOpts = &Opts; 3425 3426 #define LANG_OPTION_WITH_MARSHALLING( \ 3427 PREFIX_TYPE, NAME, ID, KIND, GROUP, ALIAS, ALIASARGS, FLAGS, PARAM, \ 3428 HELPTEXT, METAVAR, VALUES, SPELLING, SHOULD_PARSE, ALWAYS_EMIT, KEYPATH, \ 3429 DEFAULT_VALUE, IMPLIED_CHECK, IMPLIED_VALUE, NORMALIZER, DENORMALIZER, \ 3430 MERGER, EXTRACTOR, TABLE_INDEX) \ 3431 GENERATE_OPTION_WITH_MARSHALLING( \ 3432 Args, SA, KIND, FLAGS, SPELLING, ALWAYS_EMIT, KEYPATH, DEFAULT_VALUE, \ 3433 IMPLIED_CHECK, IMPLIED_VALUE, DENORMALIZER, EXTRACTOR, TABLE_INDEX) 3434 #include "clang/Driver/Options.inc" 3435 #undef LANG_OPTION_WITH_MARSHALLING 3436 3437 // The '-fcf-protection=' option is generated by CodeGenOpts generator. 3438 3439 if (Opts.ObjC) { 3440 GenerateArg(Args, OPT_fobjc_runtime_EQ, Opts.ObjCRuntime.getAsString(), SA); 3441 3442 if (Opts.GC == LangOptions::GCOnly) 3443 GenerateArg(Args, OPT_fobjc_gc_only, SA); 3444 else if (Opts.GC == LangOptions::HybridGC) 3445 GenerateArg(Args, OPT_fobjc_gc, SA); 3446 else if (Opts.ObjCAutoRefCount == 1) 3447 GenerateArg(Args, OPT_fobjc_arc, SA); 3448 3449 if (Opts.ObjCWeakRuntime) 3450 GenerateArg(Args, OPT_fobjc_runtime_has_weak, SA); 3451 3452 if (Opts.ObjCWeak) 3453 GenerateArg(Args, OPT_fobjc_weak, SA); 3454 3455 if (Opts.ObjCSubscriptingLegacyRuntime) 3456 GenerateArg(Args, OPT_fobjc_subscripting_legacy_runtime, SA); 3457 } 3458 3459 if (Opts.GNUCVersion != 0) { 3460 unsigned Major = Opts.GNUCVersion / 100 / 100; 3461 unsigned Minor = (Opts.GNUCVersion / 100) % 100; 3462 unsigned Patch = Opts.GNUCVersion % 100; 3463 GenerateArg(Args, OPT_fgnuc_version_EQ, 3464 Twine(Major) + "." + Twine(Minor) + "." + Twine(Patch), SA); 3465 } 3466 3467 if (Opts.IgnoreXCOFFVisibility) 3468 GenerateArg(Args, OPT_mignore_xcoff_visibility, SA); 3469 3470 if (Opts.SignedOverflowBehavior == LangOptions::SOB_Trapping) { 3471 GenerateArg(Args, OPT_ftrapv, SA); 3472 GenerateArg(Args, OPT_ftrapv_handler, Opts.OverflowHandler, SA); 3473 } else if (Opts.SignedOverflowBehavior == LangOptions::SOB_Defined) { 3474 GenerateArg(Args, OPT_fwrapv, SA); 3475 } 3476 3477 if (Opts.MSCompatibilityVersion != 0) { 3478 unsigned Major = Opts.MSCompatibilityVersion / 10000000; 3479 unsigned Minor = (Opts.MSCompatibilityVersion / 100000) % 100; 3480 unsigned Subminor = Opts.MSCompatibilityVersion % 100000; 3481 GenerateArg(Args, OPT_fms_compatibility_version, 3482 Twine(Major) + "." + Twine(Minor) + "." + Twine(Subminor), SA); 3483 } 3484 3485 if ((!Opts.GNUMode && !Opts.MSVCCompat && !Opts.CPlusPlus17) || T.isOSzOS()) { 3486 if (!Opts.Trigraphs) 3487 GenerateArg(Args, OPT_fno_trigraphs, SA); 3488 } else { 3489 if (Opts.Trigraphs) 3490 GenerateArg(Args, OPT_ftrigraphs, SA); 3491 } 3492 3493 if (Opts.Blocks && !(Opts.OpenCL && Opts.OpenCLVersion == 200)) 3494 GenerateArg(Args, OPT_fblocks, SA); 3495 3496 if (Opts.ConvergentFunctions && 3497 !(Opts.OpenCL || (Opts.CUDA && Opts.CUDAIsDevice) || Opts.SYCLIsDevice)) 3498 GenerateArg(Args, OPT_fconvergent_functions, SA); 3499 3500 if (Opts.NoBuiltin && !Opts.Freestanding) 3501 GenerateArg(Args, OPT_fno_builtin, SA); 3502 3503 if (!Opts.NoBuiltin) 3504 for (const auto &Func : Opts.NoBuiltinFuncs) 3505 GenerateArg(Args, OPT_fno_builtin_, Func, SA); 3506 3507 if (Opts.LongDoubleSize == 128) 3508 GenerateArg(Args, OPT_mlong_double_128, SA); 3509 else if (Opts.LongDoubleSize == 64) 3510 GenerateArg(Args, OPT_mlong_double_64, SA); 3511 else if (Opts.LongDoubleSize == 80) 3512 GenerateArg(Args, OPT_mlong_double_80, SA); 3513 3514 // Not generating '-mrtd', it's just an alias for '-fdefault-calling-conv='. 3515 3516 // OpenMP was requested via '-fopenmp', not implied by '-fopenmp-simd' or 3517 // '-fopenmp-targets='. 3518 if (Opts.OpenMP && !Opts.OpenMPSimd) { 3519 GenerateArg(Args, OPT_fopenmp, SA); 3520 3521 if (Opts.OpenMP != 50) 3522 GenerateArg(Args, OPT_fopenmp_version_EQ, Twine(Opts.OpenMP), SA); 3523 3524 if (!Opts.OpenMPUseTLS) 3525 GenerateArg(Args, OPT_fnoopenmp_use_tls, SA); 3526 3527 if (Opts.OpenMPIsDevice) 3528 GenerateArg(Args, OPT_fopenmp_is_device, SA); 3529 3530 if (Opts.OpenMPIRBuilder) 3531 GenerateArg(Args, OPT_fopenmp_enable_irbuilder, SA); 3532 } 3533 3534 if (Opts.OpenMPSimd) { 3535 GenerateArg(Args, OPT_fopenmp_simd, SA); 3536 3537 if (Opts.OpenMP != 50) 3538 GenerateArg(Args, OPT_fopenmp_version_EQ, Twine(Opts.OpenMP), SA); 3539 } 3540 3541 if (Opts.OpenMPThreadSubscription) 3542 GenerateArg(Args, OPT_fopenmp_assume_threads_oversubscription, SA); 3543 3544 if (Opts.OpenMPTeamSubscription) 3545 GenerateArg(Args, OPT_fopenmp_assume_teams_oversubscription, SA); 3546 3547 if (Opts.OpenMPTargetDebug != 0) 3548 GenerateArg(Args, OPT_fopenmp_target_debug_EQ, 3549 Twine(Opts.OpenMPTargetDebug), SA); 3550 3551 if (Opts.OpenMPCUDANumSMs != 0) 3552 GenerateArg(Args, OPT_fopenmp_cuda_number_of_sm_EQ, 3553 Twine(Opts.OpenMPCUDANumSMs), SA); 3554 3555 if (Opts.OpenMPCUDABlocksPerSM != 0) 3556 GenerateArg(Args, OPT_fopenmp_cuda_blocks_per_sm_EQ, 3557 Twine(Opts.OpenMPCUDABlocksPerSM), SA); 3558 3559 if (Opts.OpenMPCUDAReductionBufNum != 1024) 3560 GenerateArg(Args, OPT_fopenmp_cuda_teams_reduction_recs_num_EQ, 3561 Twine(Opts.OpenMPCUDAReductionBufNum), SA); 3562 3563 if (!Opts.OMPTargetTriples.empty()) { 3564 std::string Targets; 3565 llvm::raw_string_ostream OS(Targets); 3566 llvm::interleave( 3567 Opts.OMPTargetTriples, OS, 3568 [&OS](const llvm::Triple &T) { OS << T.str(); }, ","); 3569 GenerateArg(Args, OPT_fopenmp_targets_EQ, OS.str(), SA); 3570 } 3571 3572 if (!Opts.OMPHostIRFile.empty()) 3573 GenerateArg(Args, OPT_fopenmp_host_ir_file_path, Opts.OMPHostIRFile, SA); 3574 3575 if (Opts.OpenMPCUDAMode) 3576 GenerateArg(Args, OPT_fopenmp_cuda_mode, SA); 3577 3578 if (Opts.OpenMPCUDAForceFullRuntime) 3579 GenerateArg(Args, OPT_fopenmp_cuda_force_full_runtime, SA); 3580 3581 // The arguments used to set Optimize, OptimizeSize and NoInlineDefine are 3582 // generated from CodeGenOptions. 3583 3584 if (Opts.DefaultFPContractMode == LangOptions::FPM_Fast) 3585 GenerateArg(Args, OPT_ffp_contract, "fast", SA); 3586 else if (Opts.DefaultFPContractMode == LangOptions::FPM_On) 3587 GenerateArg(Args, OPT_ffp_contract, "on", SA); 3588 else if (Opts.DefaultFPContractMode == LangOptions::FPM_Off) 3589 GenerateArg(Args, OPT_ffp_contract, "off", SA); 3590 else if (Opts.DefaultFPContractMode == LangOptions::FPM_FastHonorPragmas) 3591 GenerateArg(Args, OPT_ffp_contract, "fast-honor-pragmas", SA); 3592 3593 for (StringRef Sanitizer : serializeSanitizerKinds(Opts.Sanitize)) 3594 GenerateArg(Args, OPT_fsanitize_EQ, Sanitizer, SA); 3595 3596 // Conflating '-fsanitize-system-ignorelist' and '-fsanitize-ignorelist'. 3597 for (const std::string &F : Opts.NoSanitizeFiles) 3598 GenerateArg(Args, OPT_fsanitize_ignorelist_EQ, F, SA); 3599 3600 if (Opts.getClangABICompat() == LangOptions::ClangABI::Ver3_8) 3601 GenerateArg(Args, OPT_fclang_abi_compat_EQ, "3.8", SA); 3602 else if (Opts.getClangABICompat() == LangOptions::ClangABI::Ver4) 3603 GenerateArg(Args, OPT_fclang_abi_compat_EQ, "4.0", SA); 3604 else if (Opts.getClangABICompat() == LangOptions::ClangABI::Ver6) 3605 GenerateArg(Args, OPT_fclang_abi_compat_EQ, "6.0", SA); 3606 else if (Opts.getClangABICompat() == LangOptions::ClangABI::Ver7) 3607 GenerateArg(Args, OPT_fclang_abi_compat_EQ, "7.0", SA); 3608 else if (Opts.getClangABICompat() == LangOptions::ClangABI::Ver9) 3609 GenerateArg(Args, OPT_fclang_abi_compat_EQ, "9.0", SA); 3610 else if (Opts.getClangABICompat() == LangOptions::ClangABI::Ver11) 3611 GenerateArg(Args, OPT_fclang_abi_compat_EQ, "11.0", SA); 3612 else if (Opts.getClangABICompat() == LangOptions::ClangABI::Ver12) 3613 GenerateArg(Args, OPT_fclang_abi_compat_EQ, "12.0", SA); 3614 else if (Opts.getClangABICompat() == LangOptions::ClangABI::Ver13) 3615 GenerateArg(Args, OPT_fclang_abi_compat_EQ, "13.0", SA); 3616 3617 if (Opts.getSignReturnAddressScope() == 3618 LangOptions::SignReturnAddressScopeKind::All) 3619 GenerateArg(Args, OPT_msign_return_address_EQ, "all", SA); 3620 else if (Opts.getSignReturnAddressScope() == 3621 LangOptions::SignReturnAddressScopeKind::NonLeaf) 3622 GenerateArg(Args, OPT_msign_return_address_EQ, "non-leaf", SA); 3623 3624 if (Opts.getSignReturnAddressKey() == 3625 LangOptions::SignReturnAddressKeyKind::BKey) 3626 GenerateArg(Args, OPT_msign_return_address_key_EQ, "b_key", SA); 3627 3628 if (Opts.CXXABI) 3629 GenerateArg(Args, OPT_fcxx_abi_EQ, TargetCXXABI::getSpelling(*Opts.CXXABI), 3630 SA); 3631 3632 if (Opts.RelativeCXXABIVTables) 3633 GenerateArg(Args, OPT_fexperimental_relative_cxx_abi_vtables, SA); 3634 else 3635 GenerateArg(Args, OPT_fno_experimental_relative_cxx_abi_vtables, SA); 3636 3637 for (const auto &MP : Opts.MacroPrefixMap) 3638 GenerateArg(Args, OPT_fmacro_prefix_map_EQ, MP.first + "=" + MP.second, SA); 3639 } 3640 3641 bool CompilerInvocation::ParseLangArgs(LangOptions &Opts, ArgList &Args, 3642 InputKind IK, const llvm::Triple &T, 3643 std::vector<std::string> &Includes, 3644 DiagnosticsEngine &Diags) { 3645 unsigned NumErrorsBefore = Diags.getNumErrors(); 3646 3647 if (IK.getFormat() == InputKind::Precompiled || 3648 IK.getLanguage() == Language::LLVM_IR) { 3649 // ObjCAAutoRefCount and Sanitize LangOpts are used to setup the 3650 // PassManager in BackendUtil.cpp. They need to be initialized no matter 3651 // what the input type is. 3652 if (Args.hasArg(OPT_fobjc_arc)) 3653 Opts.ObjCAutoRefCount = 1; 3654 // PICLevel and PIELevel are needed during code generation and this should 3655 // be set regardless of the input type. 3656 Opts.PICLevel = getLastArgIntValue(Args, OPT_pic_level, 0, Diags); 3657 Opts.PIE = Args.hasArg(OPT_pic_is_pie); 3658 parseSanitizerKinds("-fsanitize=", Args.getAllArgValues(OPT_fsanitize_EQ), 3659 Diags, Opts.Sanitize); 3660 3661 return Diags.getNumErrors() == NumErrorsBefore; 3662 } 3663 3664 // Other LangOpts are only initialized when the input is not AST or LLVM IR. 3665 // FIXME: Should we really be parsing this for an Language::Asm input? 3666 3667 // FIXME: Cleanup per-file based stuff. 3668 LangStandard::Kind LangStd = LangStandard::lang_unspecified; 3669 if (const Arg *A = Args.getLastArg(OPT_std_EQ)) { 3670 LangStd = LangStandard::getLangKind(A->getValue()); 3671 if (LangStd == LangStandard::lang_unspecified) { 3672 Diags.Report(diag::err_drv_invalid_value) 3673 << A->getAsString(Args) << A->getValue(); 3674 // Report supported standards with short description. 3675 for (unsigned KindValue = 0; 3676 KindValue != LangStandard::lang_unspecified; 3677 ++KindValue) { 3678 const LangStandard &Std = LangStandard::getLangStandardForKind( 3679 static_cast<LangStandard::Kind>(KindValue)); 3680 if (IsInputCompatibleWithStandard(IK, Std)) { 3681 auto Diag = Diags.Report(diag::note_drv_use_standard); 3682 Diag << Std.getName() << Std.getDescription(); 3683 unsigned NumAliases = 0; 3684 #define LANGSTANDARD(id, name, lang, desc, features) 3685 #define LANGSTANDARD_ALIAS(id, alias) \ 3686 if (KindValue == LangStandard::lang_##id) ++NumAliases; 3687 #define LANGSTANDARD_ALIAS_DEPR(id, alias) 3688 #include "clang/Basic/LangStandards.def" 3689 Diag << NumAliases; 3690 #define LANGSTANDARD(id, name, lang, desc, features) 3691 #define LANGSTANDARD_ALIAS(id, alias) \ 3692 if (KindValue == LangStandard::lang_##id) Diag << alias; 3693 #define LANGSTANDARD_ALIAS_DEPR(id, alias) 3694 #include "clang/Basic/LangStandards.def" 3695 } 3696 } 3697 } else { 3698 // Valid standard, check to make sure language and standard are 3699 // compatible. 3700 const LangStandard &Std = LangStandard::getLangStandardForKind(LangStd); 3701 if (!IsInputCompatibleWithStandard(IK, Std)) { 3702 Diags.Report(diag::err_drv_argument_not_allowed_with) 3703 << A->getAsString(Args) << GetInputKindName(IK); 3704 } 3705 } 3706 } 3707 3708 // -cl-std only applies for OpenCL language standards. 3709 // Override the -std option in this case. 3710 if (const Arg *A = Args.getLastArg(OPT_cl_std_EQ)) { 3711 LangStandard::Kind OpenCLLangStd 3712 = llvm::StringSwitch<LangStandard::Kind>(A->getValue()) 3713 .Cases("cl", "CL", LangStandard::lang_opencl10) 3714 .Cases("cl1.0", "CL1.0", LangStandard::lang_opencl10) 3715 .Cases("cl1.1", "CL1.1", LangStandard::lang_opencl11) 3716 .Cases("cl1.2", "CL1.2", LangStandard::lang_opencl12) 3717 .Cases("cl2.0", "CL2.0", LangStandard::lang_opencl20) 3718 .Cases("cl3.0", "CL3.0", LangStandard::lang_opencl30) 3719 .Cases("clc++", "CLC++", LangStandard::lang_openclcpp10) 3720 .Cases("clc++1.0", "CLC++1.0", LangStandard::lang_openclcpp10) 3721 .Cases("clc++2021", "CLC++2021", LangStandard::lang_openclcpp2021) 3722 .Default(LangStandard::lang_unspecified); 3723 3724 if (OpenCLLangStd == LangStandard::lang_unspecified) { 3725 Diags.Report(diag::err_drv_invalid_value) 3726 << A->getAsString(Args) << A->getValue(); 3727 } 3728 else 3729 LangStd = OpenCLLangStd; 3730 } 3731 3732 // These need to be parsed now. They are used to set OpenCL defaults. 3733 Opts.IncludeDefaultHeader = Args.hasArg(OPT_finclude_default_header); 3734 Opts.DeclareOpenCLBuiltins = Args.hasArg(OPT_fdeclare_opencl_builtins); 3735 3736 CompilerInvocation::setLangDefaults(Opts, IK, T, Includes, LangStd); 3737 3738 // The key paths of codegen options defined in Options.td start with 3739 // "LangOpts->". Let's provide the expected variable name and type. 3740 LangOptions *LangOpts = &Opts; 3741 3742 #define LANG_OPTION_WITH_MARSHALLING( \ 3743 PREFIX_TYPE, NAME, ID, KIND, GROUP, ALIAS, ALIASARGS, FLAGS, PARAM, \ 3744 HELPTEXT, METAVAR, VALUES, SPELLING, SHOULD_PARSE, ALWAYS_EMIT, KEYPATH, \ 3745 DEFAULT_VALUE, IMPLIED_CHECK, IMPLIED_VALUE, NORMALIZER, DENORMALIZER, \ 3746 MERGER, EXTRACTOR, TABLE_INDEX) \ 3747 PARSE_OPTION_WITH_MARSHALLING( \ 3748 Args, Diags, ID, FLAGS, PARAM, SHOULD_PARSE, KEYPATH, DEFAULT_VALUE, \ 3749 IMPLIED_CHECK, IMPLIED_VALUE, NORMALIZER, MERGER, TABLE_INDEX) 3750 #include "clang/Driver/Options.inc" 3751 #undef LANG_OPTION_WITH_MARSHALLING 3752 3753 if (const Arg *A = Args.getLastArg(OPT_fcf_protection_EQ)) { 3754 StringRef Name = A->getValue(); 3755 if (Name == "full" || Name == "branch") { 3756 Opts.CFProtectionBranch = 1; 3757 } 3758 } 3759 3760 if ((Args.hasArg(OPT_fsycl_is_device) || Args.hasArg(OPT_fsycl_is_host)) && 3761 !Args.hasArg(OPT_sycl_std_EQ)) { 3762 // If the user supplied -fsycl-is-device or -fsycl-is-host, but failed to 3763 // provide -sycl-std=, we want to default it to whatever the default SYCL 3764 // version is. I could not find a way to express this with the options 3765 // tablegen because we still want this value to be SYCL_None when the user 3766 // is not in device or host mode. 3767 Opts.setSYCLVersion(LangOptions::SYCL_Default); 3768 } 3769 3770 if (Opts.ObjC) { 3771 if (Arg *arg = Args.getLastArg(OPT_fobjc_runtime_EQ)) { 3772 StringRef value = arg->getValue(); 3773 if (Opts.ObjCRuntime.tryParse(value)) 3774 Diags.Report(diag::err_drv_unknown_objc_runtime) << value; 3775 } 3776 3777 if (Args.hasArg(OPT_fobjc_gc_only)) 3778 Opts.setGC(LangOptions::GCOnly); 3779 else if (Args.hasArg(OPT_fobjc_gc)) 3780 Opts.setGC(LangOptions::HybridGC); 3781 else if (Args.hasArg(OPT_fobjc_arc)) { 3782 Opts.ObjCAutoRefCount = 1; 3783 if (!Opts.ObjCRuntime.allowsARC()) 3784 Diags.Report(diag::err_arc_unsupported_on_runtime); 3785 } 3786 3787 // ObjCWeakRuntime tracks whether the runtime supports __weak, not 3788 // whether the feature is actually enabled. This is predominantly 3789 // determined by -fobjc-runtime, but we allow it to be overridden 3790 // from the command line for testing purposes. 3791 if (Args.hasArg(OPT_fobjc_runtime_has_weak)) 3792 Opts.ObjCWeakRuntime = 1; 3793 else 3794 Opts.ObjCWeakRuntime = Opts.ObjCRuntime.allowsWeak(); 3795 3796 // ObjCWeak determines whether __weak is actually enabled. 3797 // Note that we allow -fno-objc-weak to disable this even in ARC mode. 3798 if (auto weakArg = Args.getLastArg(OPT_fobjc_weak, OPT_fno_objc_weak)) { 3799 if (!weakArg->getOption().matches(OPT_fobjc_weak)) { 3800 assert(!Opts.ObjCWeak); 3801 } else if (Opts.getGC() != LangOptions::NonGC) { 3802 Diags.Report(diag::err_objc_weak_with_gc); 3803 } else if (!Opts.ObjCWeakRuntime) { 3804 Diags.Report(diag::err_objc_weak_unsupported); 3805 } else { 3806 Opts.ObjCWeak = 1; 3807 } 3808 } else if (Opts.ObjCAutoRefCount) { 3809 Opts.ObjCWeak = Opts.ObjCWeakRuntime; 3810 } 3811 3812 if (Args.hasArg(OPT_fobjc_subscripting_legacy_runtime)) 3813 Opts.ObjCSubscriptingLegacyRuntime = 3814 (Opts.ObjCRuntime.getKind() == ObjCRuntime::FragileMacOSX); 3815 } 3816 3817 if (Arg *A = Args.getLastArg(options::OPT_fgnuc_version_EQ)) { 3818 // Check that the version has 1 to 3 components and the minor and patch 3819 // versions fit in two decimal digits. 3820 VersionTuple GNUCVer; 3821 bool Invalid = GNUCVer.tryParse(A->getValue()); 3822 unsigned Major = GNUCVer.getMajor(); 3823 unsigned Minor = GNUCVer.getMinor().getValueOr(0); 3824 unsigned Patch = GNUCVer.getSubminor().getValueOr(0); 3825 if (Invalid || GNUCVer.getBuild() || Minor >= 100 || Patch >= 100) { 3826 Diags.Report(diag::err_drv_invalid_value) 3827 << A->getAsString(Args) << A->getValue(); 3828 } 3829 Opts.GNUCVersion = Major * 100 * 100 + Minor * 100 + Patch; 3830 } 3831 3832 // In AIX OS, the -mignore-xcoff-visibility is enable by default if there is 3833 // no -fvisibility=* option. 3834 // This is the reason why '-fvisibility' needs to be always generated: 3835 // its absence implies '-mignore-xcoff-visibility'. 3836 // 3837 // Suppose the original cc1 command line does contain '-fvisibility default': 3838 // '-mignore-xcoff-visibility' should not be implied. 3839 // * If '-fvisibility' is not generated (as most options with default values 3840 // don't), its absence would imply '-mignore-xcoff-visibility'. This changes 3841 // the command line semantics. 3842 // * If '-fvisibility' is generated regardless of its presence and value, 3843 // '-mignore-xcoff-visibility' won't be implied and the command line 3844 // semantics are kept intact. 3845 // 3846 // When the original cc1 command line does **not** contain '-fvisibility', 3847 // '-mignore-xcoff-visibility' is implied. The generated command line will 3848 // contain both '-fvisibility default' and '-mignore-xcoff-visibility' and 3849 // subsequent calls to `CreateFromArgs`/`generateCC1CommandLine` will always 3850 // produce the same arguments. 3851 3852 if (T.isOSAIX() && (Args.hasArg(OPT_mignore_xcoff_visibility) || 3853 !Args.hasArg(OPT_fvisibility))) 3854 Opts.IgnoreXCOFFVisibility = 1; 3855 3856 if (Args.hasArg(OPT_ftrapv)) { 3857 Opts.setSignedOverflowBehavior(LangOptions::SOB_Trapping); 3858 // Set the handler, if one is specified. 3859 Opts.OverflowHandler = 3860 std::string(Args.getLastArgValue(OPT_ftrapv_handler)); 3861 } 3862 else if (Args.hasArg(OPT_fwrapv)) 3863 Opts.setSignedOverflowBehavior(LangOptions::SOB_Defined); 3864 3865 Opts.MSCompatibilityVersion = 0; 3866 if (const Arg *A = Args.getLastArg(OPT_fms_compatibility_version)) { 3867 VersionTuple VT; 3868 if (VT.tryParse(A->getValue())) 3869 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) 3870 << A->getValue(); 3871 Opts.MSCompatibilityVersion = VT.getMajor() * 10000000 + 3872 VT.getMinor().getValueOr(0) * 100000 + 3873 VT.getSubminor().getValueOr(0); 3874 } 3875 3876 // Mimicking gcc's behavior, trigraphs are only enabled if -trigraphs 3877 // is specified, or -std is set to a conforming mode. 3878 // Trigraphs are disabled by default in c++1z onwards. 3879 // For z/OS, trigraphs are enabled by default (without regard to the above). 3880 Opts.Trigraphs = 3881 (!Opts.GNUMode && !Opts.MSVCCompat && !Opts.CPlusPlus17) || T.isOSzOS(); 3882 Opts.Trigraphs = 3883 Args.hasFlag(OPT_ftrigraphs, OPT_fno_trigraphs, Opts.Trigraphs); 3884 3885 Opts.Blocks = Args.hasArg(OPT_fblocks) || (Opts.OpenCL 3886 && Opts.OpenCLVersion == 200); 3887 3888 Opts.ConvergentFunctions = Opts.OpenCL || (Opts.CUDA && Opts.CUDAIsDevice) || 3889 Opts.SYCLIsDevice || 3890 Args.hasArg(OPT_fconvergent_functions); 3891 3892 Opts.NoBuiltin = Args.hasArg(OPT_fno_builtin) || Opts.Freestanding; 3893 if (!Opts.NoBuiltin) 3894 getAllNoBuiltinFuncValues(Args, Opts.NoBuiltinFuncs); 3895 if (Arg *A = Args.getLastArg(options::OPT_LongDouble_Group)) { 3896 if (A->getOption().matches(options::OPT_mlong_double_64)) 3897 Opts.LongDoubleSize = 64; 3898 else if (A->getOption().matches(options::OPT_mlong_double_80)) 3899 Opts.LongDoubleSize = 80; 3900 else if (A->getOption().matches(options::OPT_mlong_double_128)) 3901 Opts.LongDoubleSize = 128; 3902 else 3903 Opts.LongDoubleSize = 0; 3904 } 3905 if (Opts.FastRelaxedMath) 3906 Opts.setDefaultFPContractMode(LangOptions::FPM_Fast); 3907 3908 llvm::sort(Opts.ModuleFeatures); 3909 3910 // -mrtd option 3911 if (Arg *A = Args.getLastArg(OPT_mrtd)) { 3912 if (Opts.getDefaultCallingConv() != LangOptions::DCC_None) 3913 Diags.Report(diag::err_drv_argument_not_allowed_with) 3914 << A->getSpelling() << "-fdefault-calling-conv"; 3915 else { 3916 if (T.getArch() != llvm::Triple::x86) 3917 Diags.Report(diag::err_drv_argument_not_allowed_with) 3918 << A->getSpelling() << T.getTriple(); 3919 else 3920 Opts.setDefaultCallingConv(LangOptions::DCC_StdCall); 3921 } 3922 } 3923 3924 // Check if -fopenmp is specified and set default version to 5.0. 3925 Opts.OpenMP = Args.hasArg(OPT_fopenmp) ? 50 : 0; 3926 // Check if -fopenmp-simd is specified. 3927 bool IsSimdSpecified = 3928 Args.hasFlag(options::OPT_fopenmp_simd, options::OPT_fno_openmp_simd, 3929 /*Default=*/false); 3930 Opts.OpenMPSimd = !Opts.OpenMP && IsSimdSpecified; 3931 Opts.OpenMPUseTLS = 3932 Opts.OpenMP && !Args.hasArg(options::OPT_fnoopenmp_use_tls); 3933 Opts.OpenMPIsDevice = 3934 Opts.OpenMP && Args.hasArg(options::OPT_fopenmp_is_device); 3935 Opts.OpenMPIRBuilder = 3936 Opts.OpenMP && Args.hasArg(options::OPT_fopenmp_enable_irbuilder); 3937 bool IsTargetSpecified = 3938 Opts.OpenMPIsDevice || Args.hasArg(options::OPT_fopenmp_targets_EQ); 3939 3940 Opts.ConvergentFunctions = Opts.ConvergentFunctions || Opts.OpenMPIsDevice; 3941 3942 if (Opts.OpenMP || Opts.OpenMPSimd) { 3943 if (int Version = getLastArgIntValue( 3944 Args, OPT_fopenmp_version_EQ, 3945 (IsSimdSpecified || IsTargetSpecified) ? 50 : Opts.OpenMP, Diags)) 3946 Opts.OpenMP = Version; 3947 // Provide diagnostic when a given target is not expected to be an OpenMP 3948 // device or host. 3949 if (!Opts.OpenMPIsDevice) { 3950 switch (T.getArch()) { 3951 default: 3952 break; 3953 // Add unsupported host targets here: 3954 case llvm::Triple::nvptx: 3955 case llvm::Triple::nvptx64: 3956 Diags.Report(diag::err_drv_omp_host_target_not_supported) << T.str(); 3957 break; 3958 } 3959 } 3960 } 3961 3962 // Set the flag to prevent the implementation from emitting device exception 3963 // handling code for those requiring so. 3964 if ((Opts.OpenMPIsDevice && (T.isNVPTX() || T.isAMDGCN())) || 3965 Opts.OpenCLCPlusPlus) { 3966 3967 Opts.Exceptions = 0; 3968 Opts.CXXExceptions = 0; 3969 } 3970 if (Opts.OpenMPIsDevice && T.isNVPTX()) { 3971 Opts.OpenMPCUDANumSMs = 3972 getLastArgIntValue(Args, options::OPT_fopenmp_cuda_number_of_sm_EQ, 3973 Opts.OpenMPCUDANumSMs, Diags); 3974 Opts.OpenMPCUDABlocksPerSM = 3975 getLastArgIntValue(Args, options::OPT_fopenmp_cuda_blocks_per_sm_EQ, 3976 Opts.OpenMPCUDABlocksPerSM, Diags); 3977 Opts.OpenMPCUDAReductionBufNum = getLastArgIntValue( 3978 Args, options::OPT_fopenmp_cuda_teams_reduction_recs_num_EQ, 3979 Opts.OpenMPCUDAReductionBufNum, Diags); 3980 } 3981 3982 // Set the value of the debugging flag used in the new offloading device RTL. 3983 // Set either by a specific value or to a default if not specified. 3984 if (Opts.OpenMPIsDevice && (Args.hasArg(OPT_fopenmp_target_debug) || 3985 Args.hasArg(OPT_fopenmp_target_debug_EQ))) { 3986 Opts.OpenMPTargetDebug = getLastArgIntValue( 3987 Args, OPT_fopenmp_target_debug_EQ, Opts.OpenMPTargetDebug, Diags); 3988 if (!Opts.OpenMPTargetDebug && Args.hasArg(OPT_fopenmp_target_debug)) 3989 Opts.OpenMPTargetDebug = 1; 3990 } 3991 3992 if (Opts.OpenMPIsDevice) { 3993 if (Args.hasArg(OPT_fopenmp_assume_teams_oversubscription)) 3994 Opts.OpenMPTeamSubscription = true; 3995 if (Args.hasArg(OPT_fopenmp_assume_threads_oversubscription)) 3996 Opts.OpenMPThreadSubscription = true; 3997 } 3998 3999 // Get the OpenMP target triples if any. 4000 if (Arg *A = Args.getLastArg(options::OPT_fopenmp_targets_EQ)) { 4001 enum ArchPtrSize { Arch16Bit, Arch32Bit, Arch64Bit }; 4002 auto getArchPtrSize = [](const llvm::Triple &T) { 4003 if (T.isArch16Bit()) 4004 return Arch16Bit; 4005 if (T.isArch32Bit()) 4006 return Arch32Bit; 4007 assert(T.isArch64Bit() && "Expected 64-bit architecture"); 4008 return Arch64Bit; 4009 }; 4010 4011 for (unsigned i = 0; i < A->getNumValues(); ++i) { 4012 llvm::Triple TT(A->getValue(i)); 4013 4014 if (TT.getArch() == llvm::Triple::UnknownArch || 4015 !(TT.getArch() == llvm::Triple::aarch64 || TT.isPPC() || 4016 TT.getArch() == llvm::Triple::nvptx || 4017 TT.getArch() == llvm::Triple::nvptx64 || 4018 TT.getArch() == llvm::Triple::amdgcn || 4019 TT.getArch() == llvm::Triple::x86 || 4020 TT.getArch() == llvm::Triple::x86_64)) 4021 Diags.Report(diag::err_drv_invalid_omp_target) << A->getValue(i); 4022 else if (getArchPtrSize(T) != getArchPtrSize(TT)) 4023 Diags.Report(diag::err_drv_incompatible_omp_arch) 4024 << A->getValue(i) << T.str(); 4025 else 4026 Opts.OMPTargetTriples.push_back(TT); 4027 } 4028 } 4029 4030 // Get OpenMP host file path if any and report if a non existent file is 4031 // found 4032 if (Arg *A = Args.getLastArg(options::OPT_fopenmp_host_ir_file_path)) { 4033 Opts.OMPHostIRFile = A->getValue(); 4034 if (!llvm::sys::fs::exists(Opts.OMPHostIRFile)) 4035 Diags.Report(diag::err_drv_omp_host_ir_file_not_found) 4036 << Opts.OMPHostIRFile; 4037 } 4038 4039 // Set CUDA mode for OpenMP target NVPTX/AMDGCN if specified in options 4040 Opts.OpenMPCUDAMode = Opts.OpenMPIsDevice && (T.isNVPTX() || T.isAMDGCN()) && 4041 Args.hasArg(options::OPT_fopenmp_cuda_mode); 4042 4043 // Set CUDA mode for OpenMP target NVPTX/AMDGCN if specified in options 4044 Opts.OpenMPCUDAForceFullRuntime = 4045 Opts.OpenMPIsDevice && (T.isNVPTX() || T.isAMDGCN()) && 4046 Args.hasArg(options::OPT_fopenmp_cuda_force_full_runtime); 4047 4048 // FIXME: Eliminate this dependency. 4049 unsigned Opt = getOptimizationLevel(Args, IK, Diags), 4050 OptSize = getOptimizationLevelSize(Args); 4051 Opts.Optimize = Opt != 0; 4052 Opts.OptimizeSize = OptSize != 0; 4053 4054 // This is the __NO_INLINE__ define, which just depends on things like the 4055 // optimization level and -fno-inline, not actually whether the backend has 4056 // inlining enabled. 4057 Opts.NoInlineDefine = !Opts.Optimize; 4058 if (Arg *InlineArg = Args.getLastArg( 4059 options::OPT_finline_functions, options::OPT_finline_hint_functions, 4060 options::OPT_fno_inline_functions, options::OPT_fno_inline)) 4061 if (InlineArg->getOption().matches(options::OPT_fno_inline)) 4062 Opts.NoInlineDefine = true; 4063 4064 if (Arg *A = Args.getLastArg(OPT_ffp_contract)) { 4065 StringRef Val = A->getValue(); 4066 if (Val == "fast") 4067 Opts.setDefaultFPContractMode(LangOptions::FPM_Fast); 4068 else if (Val == "on") 4069 Opts.setDefaultFPContractMode(LangOptions::FPM_On); 4070 else if (Val == "off") 4071 Opts.setDefaultFPContractMode(LangOptions::FPM_Off); 4072 else if (Val == "fast-honor-pragmas") 4073 Opts.setDefaultFPContractMode(LangOptions::FPM_FastHonorPragmas); 4074 else 4075 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Val; 4076 } 4077 4078 // Parse -fsanitize= arguments. 4079 parseSanitizerKinds("-fsanitize=", Args.getAllArgValues(OPT_fsanitize_EQ), 4080 Diags, Opts.Sanitize); 4081 Opts.NoSanitizeFiles = Args.getAllArgValues(OPT_fsanitize_ignorelist_EQ); 4082 std::vector<std::string> systemIgnorelists = 4083 Args.getAllArgValues(OPT_fsanitize_system_ignorelist_EQ); 4084 Opts.NoSanitizeFiles.insert(Opts.NoSanitizeFiles.end(), 4085 systemIgnorelists.begin(), 4086 systemIgnorelists.end()); 4087 4088 if (Arg *A = Args.getLastArg(OPT_fclang_abi_compat_EQ)) { 4089 Opts.setClangABICompat(LangOptions::ClangABI::Latest); 4090 4091 StringRef Ver = A->getValue(); 4092 std::pair<StringRef, StringRef> VerParts = Ver.split('.'); 4093 unsigned Major, Minor = 0; 4094 4095 // Check the version number is valid: either 3.x (0 <= x <= 9) or 4096 // y or y.0 (4 <= y <= current version). 4097 if (!VerParts.first.startswith("0") && 4098 !VerParts.first.getAsInteger(10, Major) && 4099 3 <= Major && Major <= CLANG_VERSION_MAJOR && 4100 (Major == 3 ? VerParts.second.size() == 1 && 4101 !VerParts.second.getAsInteger(10, Minor) 4102 : VerParts.first.size() == Ver.size() || 4103 VerParts.second == "0")) { 4104 // Got a valid version number. 4105 if (Major == 3 && Minor <= 8) 4106 Opts.setClangABICompat(LangOptions::ClangABI::Ver3_8); 4107 else if (Major <= 4) 4108 Opts.setClangABICompat(LangOptions::ClangABI::Ver4); 4109 else if (Major <= 6) 4110 Opts.setClangABICompat(LangOptions::ClangABI::Ver6); 4111 else if (Major <= 7) 4112 Opts.setClangABICompat(LangOptions::ClangABI::Ver7); 4113 else if (Major <= 9) 4114 Opts.setClangABICompat(LangOptions::ClangABI::Ver9); 4115 else if (Major <= 11) 4116 Opts.setClangABICompat(LangOptions::ClangABI::Ver11); 4117 else if (Major <= 12) 4118 Opts.setClangABICompat(LangOptions::ClangABI::Ver12); 4119 else if (Major <= 13) 4120 Opts.setClangABICompat(LangOptions::ClangABI::Ver13); 4121 } else if (Ver != "latest") { 4122 Diags.Report(diag::err_drv_invalid_value) 4123 << A->getAsString(Args) << A->getValue(); 4124 } 4125 } 4126 4127 if (Arg *A = Args.getLastArg(OPT_msign_return_address_EQ)) { 4128 StringRef SignScope = A->getValue(); 4129 4130 if (SignScope.equals_insensitive("none")) 4131 Opts.setSignReturnAddressScope( 4132 LangOptions::SignReturnAddressScopeKind::None); 4133 else if (SignScope.equals_insensitive("all")) 4134 Opts.setSignReturnAddressScope( 4135 LangOptions::SignReturnAddressScopeKind::All); 4136 else if (SignScope.equals_insensitive("non-leaf")) 4137 Opts.setSignReturnAddressScope( 4138 LangOptions::SignReturnAddressScopeKind::NonLeaf); 4139 else 4140 Diags.Report(diag::err_drv_invalid_value) 4141 << A->getAsString(Args) << SignScope; 4142 4143 if (Arg *A = Args.getLastArg(OPT_msign_return_address_key_EQ)) { 4144 StringRef SignKey = A->getValue(); 4145 if (!SignScope.empty() && !SignKey.empty()) { 4146 if (SignKey.equals_insensitive("a_key")) 4147 Opts.setSignReturnAddressKey( 4148 LangOptions::SignReturnAddressKeyKind::AKey); 4149 else if (SignKey.equals_insensitive("b_key")) 4150 Opts.setSignReturnAddressKey( 4151 LangOptions::SignReturnAddressKeyKind::BKey); 4152 else 4153 Diags.Report(diag::err_drv_invalid_value) 4154 << A->getAsString(Args) << SignKey; 4155 } 4156 } 4157 } 4158 4159 // The value can be empty, which indicates the system default should be used. 4160 StringRef CXXABI = Args.getLastArgValue(OPT_fcxx_abi_EQ); 4161 if (!CXXABI.empty()) { 4162 if (!TargetCXXABI::isABI(CXXABI)) { 4163 Diags.Report(diag::err_invalid_cxx_abi) << CXXABI; 4164 } else { 4165 auto Kind = TargetCXXABI::getKind(CXXABI); 4166 if (!TargetCXXABI::isSupportedCXXABI(T, Kind)) 4167 Diags.Report(diag::err_unsupported_cxx_abi) << CXXABI << T.str(); 4168 else 4169 Opts.CXXABI = Kind; 4170 } 4171 } 4172 4173 Opts.RelativeCXXABIVTables = 4174 Args.hasFlag(options::OPT_fexperimental_relative_cxx_abi_vtables, 4175 options::OPT_fno_experimental_relative_cxx_abi_vtables, 4176 TargetCXXABI::usesRelativeVTables(T)); 4177 4178 for (const auto &A : Args.getAllArgValues(OPT_fmacro_prefix_map_EQ)) { 4179 auto Split = StringRef(A).split('='); 4180 Opts.MacroPrefixMap.insert( 4181 {std::string(Split.first), std::string(Split.second)}); 4182 } 4183 4184 // Error if -mvscale-min is unbounded. 4185 if (Arg *A = Args.getLastArg(options::OPT_mvscale_min_EQ)) { 4186 unsigned VScaleMin; 4187 if (StringRef(A->getValue()).getAsInteger(10, VScaleMin) || VScaleMin == 0) 4188 Diags.Report(diag::err_cc1_unbounded_vscale_min); 4189 } 4190 4191 return Diags.getNumErrors() == NumErrorsBefore; 4192 } 4193 4194 static bool isStrictlyPreprocessorAction(frontend::ActionKind Action) { 4195 switch (Action) { 4196 case frontend::ASTDeclList: 4197 case frontend::ASTDump: 4198 case frontend::ASTPrint: 4199 case frontend::ASTView: 4200 case frontend::EmitAssembly: 4201 case frontend::EmitBC: 4202 case frontend::EmitHTML: 4203 case frontend::EmitLLVM: 4204 case frontend::EmitLLVMOnly: 4205 case frontend::EmitCodeGenOnly: 4206 case frontend::EmitObj: 4207 case frontend::ExtractAPI: 4208 case frontend::FixIt: 4209 case frontend::GenerateModule: 4210 case frontend::GenerateModuleInterface: 4211 case frontend::GenerateHeaderModule: 4212 case frontend::GenerateHeaderUnit: 4213 case frontend::GeneratePCH: 4214 case frontend::GenerateInterfaceStubs: 4215 case frontend::ParseSyntaxOnly: 4216 case frontend::ModuleFileInfo: 4217 case frontend::VerifyPCH: 4218 case frontend::PluginAction: 4219 case frontend::RewriteObjC: 4220 case frontend::RewriteTest: 4221 case frontend::RunAnalysis: 4222 case frontend::TemplightDump: 4223 case frontend::MigrateSource: 4224 return false; 4225 4226 case frontend::DumpCompilerOptions: 4227 case frontend::DumpRawTokens: 4228 case frontend::DumpTokens: 4229 case frontend::InitOnly: 4230 case frontend::PrintPreamble: 4231 case frontend::PrintPreprocessedInput: 4232 case frontend::RewriteMacros: 4233 case frontend::RunPreprocessorOnly: 4234 case frontend::PrintDependencyDirectivesSourceMinimizerOutput: 4235 return true; 4236 } 4237 llvm_unreachable("invalid frontend action"); 4238 } 4239 4240 static void GeneratePreprocessorArgs(PreprocessorOptions &Opts, 4241 SmallVectorImpl<const char *> &Args, 4242 CompilerInvocation::StringAllocator SA, 4243 const LangOptions &LangOpts, 4244 const FrontendOptions &FrontendOpts, 4245 const CodeGenOptions &CodeGenOpts) { 4246 PreprocessorOptions *PreprocessorOpts = &Opts; 4247 4248 #define PREPROCESSOR_OPTION_WITH_MARSHALLING( \ 4249 PREFIX_TYPE, NAME, ID, KIND, GROUP, ALIAS, ALIASARGS, FLAGS, PARAM, \ 4250 HELPTEXT, METAVAR, VALUES, SPELLING, SHOULD_PARSE, ALWAYS_EMIT, KEYPATH, \ 4251 DEFAULT_VALUE, IMPLIED_CHECK, IMPLIED_VALUE, NORMALIZER, DENORMALIZER, \ 4252 MERGER, EXTRACTOR, TABLE_INDEX) \ 4253 GENERATE_OPTION_WITH_MARSHALLING( \ 4254 Args, SA, KIND, FLAGS, SPELLING, ALWAYS_EMIT, KEYPATH, DEFAULT_VALUE, \ 4255 IMPLIED_CHECK, IMPLIED_VALUE, DENORMALIZER, EXTRACTOR, TABLE_INDEX) 4256 #include "clang/Driver/Options.inc" 4257 #undef PREPROCESSOR_OPTION_WITH_MARSHALLING 4258 4259 if (Opts.PCHWithHdrStop && !Opts.PCHWithHdrStopCreate) 4260 GenerateArg(Args, OPT_pch_through_hdrstop_use, SA); 4261 4262 for (const auto &D : Opts.DeserializedPCHDeclsToErrorOn) 4263 GenerateArg(Args, OPT_error_on_deserialized_pch_decl, D, SA); 4264 4265 if (Opts.PrecompiledPreambleBytes != std::make_pair(0u, false)) 4266 GenerateArg(Args, OPT_preamble_bytes_EQ, 4267 Twine(Opts.PrecompiledPreambleBytes.first) + "," + 4268 (Opts.PrecompiledPreambleBytes.second ? "1" : "0"), 4269 SA); 4270 4271 for (const auto &M : Opts.Macros) { 4272 // Don't generate __CET__ macro definitions. They are implied by the 4273 // -fcf-protection option that is generated elsewhere. 4274 if (M.first == "__CET__=1" && !M.second && 4275 !CodeGenOpts.CFProtectionReturn && CodeGenOpts.CFProtectionBranch) 4276 continue; 4277 if (M.first == "__CET__=2" && !M.second && CodeGenOpts.CFProtectionReturn && 4278 !CodeGenOpts.CFProtectionBranch) 4279 continue; 4280 if (M.first == "__CET__=3" && !M.second && CodeGenOpts.CFProtectionReturn && 4281 CodeGenOpts.CFProtectionBranch) 4282 continue; 4283 4284 GenerateArg(Args, M.second ? OPT_U : OPT_D, M.first, SA); 4285 } 4286 4287 for (const auto &I : Opts.Includes) { 4288 // Don't generate OpenCL includes. They are implied by other flags that are 4289 // generated elsewhere. 4290 if (LangOpts.OpenCL && LangOpts.IncludeDefaultHeader && 4291 ((LangOpts.DeclareOpenCLBuiltins && I == "opencl-c-base.h") || 4292 I == "opencl-c.h")) 4293 continue; 4294 4295 GenerateArg(Args, OPT_include, I, SA); 4296 } 4297 4298 for (const auto &CI : Opts.ChainedIncludes) 4299 GenerateArg(Args, OPT_chain_include, CI, SA); 4300 4301 for (const auto &RF : Opts.RemappedFiles) 4302 GenerateArg(Args, OPT_remap_file, RF.first + ";" + RF.second, SA); 4303 4304 // Don't handle LexEditorPlaceholders. It is implied by the action that is 4305 // generated elsewhere. 4306 } 4307 4308 static bool ParsePreprocessorArgs(PreprocessorOptions &Opts, ArgList &Args, 4309 DiagnosticsEngine &Diags, 4310 frontend::ActionKind Action, 4311 const FrontendOptions &FrontendOpts) { 4312 unsigned NumErrorsBefore = Diags.getNumErrors(); 4313 4314 PreprocessorOptions *PreprocessorOpts = &Opts; 4315 4316 #define PREPROCESSOR_OPTION_WITH_MARSHALLING( \ 4317 PREFIX_TYPE, NAME, ID, KIND, GROUP, ALIAS, ALIASARGS, FLAGS, PARAM, \ 4318 HELPTEXT, METAVAR, VALUES, SPELLING, SHOULD_PARSE, ALWAYS_EMIT, KEYPATH, \ 4319 DEFAULT_VALUE, IMPLIED_CHECK, IMPLIED_VALUE, NORMALIZER, DENORMALIZER, \ 4320 MERGER, EXTRACTOR, TABLE_INDEX) \ 4321 PARSE_OPTION_WITH_MARSHALLING( \ 4322 Args, Diags, ID, FLAGS, PARAM, SHOULD_PARSE, KEYPATH, DEFAULT_VALUE, \ 4323 IMPLIED_CHECK, IMPLIED_VALUE, NORMALIZER, MERGER, TABLE_INDEX) 4324 #include "clang/Driver/Options.inc" 4325 #undef PREPROCESSOR_OPTION_WITH_MARSHALLING 4326 4327 Opts.PCHWithHdrStop = Args.hasArg(OPT_pch_through_hdrstop_create) || 4328 Args.hasArg(OPT_pch_through_hdrstop_use); 4329 4330 for (const auto *A : Args.filtered(OPT_error_on_deserialized_pch_decl)) 4331 Opts.DeserializedPCHDeclsToErrorOn.insert(A->getValue()); 4332 4333 if (const Arg *A = Args.getLastArg(OPT_preamble_bytes_EQ)) { 4334 StringRef Value(A->getValue()); 4335 size_t Comma = Value.find(','); 4336 unsigned Bytes = 0; 4337 unsigned EndOfLine = 0; 4338 4339 if (Comma == StringRef::npos || 4340 Value.substr(0, Comma).getAsInteger(10, Bytes) || 4341 Value.substr(Comma + 1).getAsInteger(10, EndOfLine)) 4342 Diags.Report(diag::err_drv_preamble_format); 4343 else { 4344 Opts.PrecompiledPreambleBytes.first = Bytes; 4345 Opts.PrecompiledPreambleBytes.second = (EndOfLine != 0); 4346 } 4347 } 4348 4349 // Add the __CET__ macro if a CFProtection option is set. 4350 if (const Arg *A = Args.getLastArg(OPT_fcf_protection_EQ)) { 4351 StringRef Name = A->getValue(); 4352 if (Name == "branch") 4353 Opts.addMacroDef("__CET__=1"); 4354 else if (Name == "return") 4355 Opts.addMacroDef("__CET__=2"); 4356 else if (Name == "full") 4357 Opts.addMacroDef("__CET__=3"); 4358 } 4359 4360 // Add macros from the command line. 4361 for (const auto *A : Args.filtered(OPT_D, OPT_U)) { 4362 if (A->getOption().matches(OPT_D)) 4363 Opts.addMacroDef(A->getValue()); 4364 else 4365 Opts.addMacroUndef(A->getValue()); 4366 } 4367 4368 // Add the ordered list of -includes. 4369 for (const auto *A : Args.filtered(OPT_include)) 4370 Opts.Includes.emplace_back(A->getValue()); 4371 4372 for (const auto *A : Args.filtered(OPT_chain_include)) 4373 Opts.ChainedIncludes.emplace_back(A->getValue()); 4374 4375 for (const auto *A : Args.filtered(OPT_remap_file)) { 4376 std::pair<StringRef, StringRef> Split = StringRef(A->getValue()).split(';'); 4377 4378 if (Split.second.empty()) { 4379 Diags.Report(diag::err_drv_invalid_remap_file) << A->getAsString(Args); 4380 continue; 4381 } 4382 4383 Opts.addRemappedFile(Split.first, Split.second); 4384 } 4385 4386 // Always avoid lexing editor placeholders when we're just running the 4387 // preprocessor as we never want to emit the 4388 // "editor placeholder in source file" error in PP only mode. 4389 if (isStrictlyPreprocessorAction(Action)) 4390 Opts.LexEditorPlaceholders = false; 4391 4392 return Diags.getNumErrors() == NumErrorsBefore; 4393 } 4394 4395 static void GeneratePreprocessorOutputArgs( 4396 const PreprocessorOutputOptions &Opts, SmallVectorImpl<const char *> &Args, 4397 CompilerInvocation::StringAllocator SA, frontend::ActionKind Action) { 4398 const PreprocessorOutputOptions &PreprocessorOutputOpts = Opts; 4399 4400 #define PREPROCESSOR_OUTPUT_OPTION_WITH_MARSHALLING( \ 4401 PREFIX_TYPE, NAME, ID, KIND, GROUP, ALIAS, ALIASARGS, FLAGS, PARAM, \ 4402 HELPTEXT, METAVAR, VALUES, SPELLING, SHOULD_PARSE, ALWAYS_EMIT, KEYPATH, \ 4403 DEFAULT_VALUE, IMPLIED_CHECK, IMPLIED_VALUE, NORMALIZER, DENORMALIZER, \ 4404 MERGER, EXTRACTOR, TABLE_INDEX) \ 4405 GENERATE_OPTION_WITH_MARSHALLING( \ 4406 Args, SA, KIND, FLAGS, SPELLING, ALWAYS_EMIT, KEYPATH, DEFAULT_VALUE, \ 4407 IMPLIED_CHECK, IMPLIED_VALUE, DENORMALIZER, EXTRACTOR, TABLE_INDEX) 4408 #include "clang/Driver/Options.inc" 4409 #undef PREPROCESSOR_OUTPUT_OPTION_WITH_MARSHALLING 4410 4411 bool Generate_dM = isStrictlyPreprocessorAction(Action) && !Opts.ShowCPP; 4412 if (Generate_dM) 4413 GenerateArg(Args, OPT_dM, SA); 4414 if (!Generate_dM && Opts.ShowMacros) 4415 GenerateArg(Args, OPT_dD, SA); 4416 } 4417 4418 static bool ParsePreprocessorOutputArgs(PreprocessorOutputOptions &Opts, 4419 ArgList &Args, DiagnosticsEngine &Diags, 4420 frontend::ActionKind Action) { 4421 unsigned NumErrorsBefore = Diags.getNumErrors(); 4422 4423 PreprocessorOutputOptions &PreprocessorOutputOpts = Opts; 4424 4425 #define PREPROCESSOR_OUTPUT_OPTION_WITH_MARSHALLING( \ 4426 PREFIX_TYPE, NAME, ID, KIND, GROUP, ALIAS, ALIASARGS, FLAGS, PARAM, \ 4427 HELPTEXT, METAVAR, VALUES, SPELLING, SHOULD_PARSE, ALWAYS_EMIT, KEYPATH, \ 4428 DEFAULT_VALUE, IMPLIED_CHECK, IMPLIED_VALUE, NORMALIZER, DENORMALIZER, \ 4429 MERGER, EXTRACTOR, TABLE_INDEX) \ 4430 PARSE_OPTION_WITH_MARSHALLING( \ 4431 Args, Diags, ID, FLAGS, PARAM, SHOULD_PARSE, KEYPATH, DEFAULT_VALUE, \ 4432 IMPLIED_CHECK, IMPLIED_VALUE, NORMALIZER, MERGER, TABLE_INDEX) 4433 #include "clang/Driver/Options.inc" 4434 #undef PREPROCESSOR_OUTPUT_OPTION_WITH_MARSHALLING 4435 4436 Opts.ShowCPP = isStrictlyPreprocessorAction(Action) && !Args.hasArg(OPT_dM); 4437 Opts.ShowMacros = Args.hasArg(OPT_dM) || Args.hasArg(OPT_dD); 4438 4439 return Diags.getNumErrors() == NumErrorsBefore; 4440 } 4441 4442 static void GenerateTargetArgs(const TargetOptions &Opts, 4443 SmallVectorImpl<const char *> &Args, 4444 CompilerInvocation::StringAllocator SA) { 4445 const TargetOptions *TargetOpts = &Opts; 4446 #define TARGET_OPTION_WITH_MARSHALLING( \ 4447 PREFIX_TYPE, NAME, ID, KIND, GROUP, ALIAS, ALIASARGS, FLAGS, PARAM, \ 4448 HELPTEXT, METAVAR, VALUES, SPELLING, SHOULD_PARSE, ALWAYS_EMIT, KEYPATH, \ 4449 DEFAULT_VALUE, IMPLIED_CHECK, IMPLIED_VALUE, NORMALIZER, DENORMALIZER, \ 4450 MERGER, EXTRACTOR, TABLE_INDEX) \ 4451 GENERATE_OPTION_WITH_MARSHALLING( \ 4452 Args, SA, KIND, FLAGS, SPELLING, ALWAYS_EMIT, KEYPATH, DEFAULT_VALUE, \ 4453 IMPLIED_CHECK, IMPLIED_VALUE, DENORMALIZER, EXTRACTOR, TABLE_INDEX) 4454 #include "clang/Driver/Options.inc" 4455 #undef TARGET_OPTION_WITH_MARSHALLING 4456 4457 if (!Opts.SDKVersion.empty()) 4458 GenerateArg(Args, OPT_target_sdk_version_EQ, Opts.SDKVersion.getAsString(), 4459 SA); 4460 if (!Opts.DarwinTargetVariantSDKVersion.empty()) 4461 GenerateArg(Args, OPT_darwin_target_variant_sdk_version_EQ, 4462 Opts.DarwinTargetVariantSDKVersion.getAsString(), SA); 4463 } 4464 4465 static bool ParseTargetArgs(TargetOptions &Opts, ArgList &Args, 4466 DiagnosticsEngine &Diags) { 4467 unsigned NumErrorsBefore = Diags.getNumErrors(); 4468 4469 TargetOptions *TargetOpts = &Opts; 4470 4471 #define TARGET_OPTION_WITH_MARSHALLING( \ 4472 PREFIX_TYPE, NAME, ID, KIND, GROUP, ALIAS, ALIASARGS, FLAGS, PARAM, \ 4473 HELPTEXT, METAVAR, VALUES, SPELLING, SHOULD_PARSE, ALWAYS_EMIT, KEYPATH, \ 4474 DEFAULT_VALUE, IMPLIED_CHECK, IMPLIED_VALUE, NORMALIZER, DENORMALIZER, \ 4475 MERGER, EXTRACTOR, TABLE_INDEX) \ 4476 PARSE_OPTION_WITH_MARSHALLING( \ 4477 Args, Diags, ID, FLAGS, PARAM, SHOULD_PARSE, KEYPATH, DEFAULT_VALUE, \ 4478 IMPLIED_CHECK, IMPLIED_VALUE, NORMALIZER, MERGER, TABLE_INDEX) 4479 #include "clang/Driver/Options.inc" 4480 #undef TARGET_OPTION_WITH_MARSHALLING 4481 4482 if (Arg *A = Args.getLastArg(options::OPT_target_sdk_version_EQ)) { 4483 llvm::VersionTuple Version; 4484 if (Version.tryParse(A->getValue())) 4485 Diags.Report(diag::err_drv_invalid_value) 4486 << A->getAsString(Args) << A->getValue(); 4487 else 4488 Opts.SDKVersion = Version; 4489 } 4490 if (Arg *A = 4491 Args.getLastArg(options::OPT_darwin_target_variant_sdk_version_EQ)) { 4492 llvm::VersionTuple Version; 4493 if (Version.tryParse(A->getValue())) 4494 Diags.Report(diag::err_drv_invalid_value) 4495 << A->getAsString(Args) << A->getValue(); 4496 else 4497 Opts.DarwinTargetVariantSDKVersion = Version; 4498 } 4499 4500 return Diags.getNumErrors() == NumErrorsBefore; 4501 } 4502 4503 bool CompilerInvocation::CreateFromArgsImpl( 4504 CompilerInvocation &Res, ArrayRef<const char *> CommandLineArgs, 4505 DiagnosticsEngine &Diags, const char *Argv0) { 4506 unsigned NumErrorsBefore = Diags.getNumErrors(); 4507 4508 // Parse the arguments. 4509 const OptTable &Opts = getDriverOptTable(); 4510 const unsigned IncludedFlagsBitmask = options::CC1Option; 4511 unsigned MissingArgIndex, MissingArgCount; 4512 InputArgList Args = Opts.ParseArgs(CommandLineArgs, MissingArgIndex, 4513 MissingArgCount, IncludedFlagsBitmask); 4514 LangOptions &LangOpts = *Res.getLangOpts(); 4515 4516 // Check for missing argument error. 4517 if (MissingArgCount) 4518 Diags.Report(diag::err_drv_missing_argument) 4519 << Args.getArgString(MissingArgIndex) << MissingArgCount; 4520 4521 // Issue errors on unknown arguments. 4522 for (const auto *A : Args.filtered(OPT_UNKNOWN)) { 4523 auto ArgString = A->getAsString(Args); 4524 std::string Nearest; 4525 if (Opts.findNearest(ArgString, Nearest, IncludedFlagsBitmask) > 1) 4526 Diags.Report(diag::err_drv_unknown_argument) << ArgString; 4527 else 4528 Diags.Report(diag::err_drv_unknown_argument_with_suggestion) 4529 << ArgString << Nearest; 4530 } 4531 4532 ParseFileSystemArgs(Res.getFileSystemOpts(), Args, Diags); 4533 ParseMigratorArgs(Res.getMigratorOpts(), Args, Diags); 4534 ParseAnalyzerArgs(*Res.getAnalyzerOpts(), Args, Diags); 4535 ParseDiagnosticArgs(Res.getDiagnosticOpts(), Args, &Diags, 4536 /*DefaultDiagColor=*/false); 4537 ParseFrontendArgs(Res.getFrontendOpts(), Args, Diags, LangOpts.IsHeaderFile); 4538 // FIXME: We shouldn't have to pass the DashX option around here 4539 InputKind DashX = Res.getFrontendOpts().DashX; 4540 ParseTargetArgs(Res.getTargetOpts(), Args, Diags); 4541 llvm::Triple T(Res.getTargetOpts().Triple); 4542 ParseHeaderSearchArgs(Res.getHeaderSearchOpts(), Args, Diags, 4543 Res.getFileSystemOpts().WorkingDir); 4544 4545 ParseLangArgs(LangOpts, Args, DashX, T, Res.getPreprocessorOpts().Includes, 4546 Diags); 4547 if (Res.getFrontendOpts().ProgramAction == frontend::RewriteObjC) 4548 LangOpts.ObjCExceptions = 1; 4549 4550 if (LangOpts.CUDA) { 4551 // During CUDA device-side compilation, the aux triple is the 4552 // triple used for host compilation. 4553 if (LangOpts.CUDAIsDevice) 4554 Res.getTargetOpts().HostTriple = Res.getFrontendOpts().AuxTriple; 4555 } 4556 4557 // Set the triple of the host for OpenMP device compile. 4558 if (LangOpts.OpenMPIsDevice) 4559 Res.getTargetOpts().HostTriple = Res.getFrontendOpts().AuxTriple; 4560 4561 ParseCodeGenArgs(Res.getCodeGenOpts(), Args, DashX, Diags, T, 4562 Res.getFrontendOpts().OutputFile, LangOpts); 4563 4564 // FIXME: Override value name discarding when asan or msan is used because the 4565 // backend passes depend on the name of the alloca in order to print out 4566 // names. 4567 Res.getCodeGenOpts().DiscardValueNames &= 4568 !LangOpts.Sanitize.has(SanitizerKind::Address) && 4569 !LangOpts.Sanitize.has(SanitizerKind::KernelAddress) && 4570 !LangOpts.Sanitize.has(SanitizerKind::Memory) && 4571 !LangOpts.Sanitize.has(SanitizerKind::KernelMemory); 4572 4573 ParsePreprocessorArgs(Res.getPreprocessorOpts(), Args, Diags, 4574 Res.getFrontendOpts().ProgramAction, 4575 Res.getFrontendOpts()); 4576 ParsePreprocessorOutputArgs(Res.getPreprocessorOutputOpts(), Args, Diags, 4577 Res.getFrontendOpts().ProgramAction); 4578 4579 ParseDependencyOutputArgs(Res.getDependencyOutputOpts(), Args, Diags, 4580 Res.getFrontendOpts().ProgramAction, 4581 Res.getPreprocessorOutputOpts().ShowLineMarkers); 4582 if (!Res.getDependencyOutputOpts().OutputFile.empty() && 4583 Res.getDependencyOutputOpts().Targets.empty()) 4584 Diags.Report(diag::err_fe_dependency_file_requires_MT); 4585 4586 // If sanitizer is enabled, disable OPT_ffine_grained_bitfield_accesses. 4587 if (Res.getCodeGenOpts().FineGrainedBitfieldAccesses && 4588 !Res.getLangOpts()->Sanitize.empty()) { 4589 Res.getCodeGenOpts().FineGrainedBitfieldAccesses = false; 4590 Diags.Report(diag::warn_drv_fine_grained_bitfield_accesses_ignored); 4591 } 4592 4593 // Store the command-line for using in the CodeView backend. 4594 Res.getCodeGenOpts().Argv0 = Argv0; 4595 append_range(Res.getCodeGenOpts().CommandLineArgs, CommandLineArgs); 4596 4597 FixupInvocation(Res, Diags, Args, DashX); 4598 4599 return Diags.getNumErrors() == NumErrorsBefore; 4600 } 4601 4602 bool CompilerInvocation::CreateFromArgs(CompilerInvocation &Invocation, 4603 ArrayRef<const char *> CommandLineArgs, 4604 DiagnosticsEngine &Diags, 4605 const char *Argv0) { 4606 CompilerInvocation DummyInvocation; 4607 4608 return RoundTrip( 4609 [](CompilerInvocation &Invocation, ArrayRef<const char *> CommandLineArgs, 4610 DiagnosticsEngine &Diags, const char *Argv0) { 4611 return CreateFromArgsImpl(Invocation, CommandLineArgs, Diags, Argv0); 4612 }, 4613 [](CompilerInvocation &Invocation, SmallVectorImpl<const char *> &Args, 4614 StringAllocator SA) { Invocation.generateCC1CommandLine(Args, SA); }, 4615 Invocation, DummyInvocation, CommandLineArgs, Diags, Argv0); 4616 } 4617 4618 std::string CompilerInvocation::getModuleHash() const { 4619 // FIXME: Consider using SHA1 instead of MD5. 4620 llvm::HashBuilder<llvm::MD5, llvm::support::endianness::native> HBuilder; 4621 4622 // Note: For QoI reasons, the things we use as a hash here should all be 4623 // dumped via the -module-info flag. 4624 4625 // Start the signature with the compiler version. 4626 HBuilder.add(getClangFullRepositoryVersion()); 4627 4628 // Also include the serialization version, in case LLVM_APPEND_VC_REV is off 4629 // and getClangFullRepositoryVersion() doesn't include git revision. 4630 HBuilder.add(serialization::VERSION_MAJOR, serialization::VERSION_MINOR); 4631 4632 // Extend the signature with the language options 4633 #define LANGOPT(Name, Bits, Default, Description) HBuilder.add(LangOpts->Name); 4634 #define ENUM_LANGOPT(Name, Type, Bits, Default, Description) \ 4635 HBuilder.add(static_cast<unsigned>(LangOpts->get##Name())); 4636 #define BENIGN_LANGOPT(Name, Bits, Default, Description) 4637 #define BENIGN_ENUM_LANGOPT(Name, Type, Bits, Default, Description) 4638 #include "clang/Basic/LangOptions.def" 4639 4640 HBuilder.addRange(LangOpts->ModuleFeatures); 4641 4642 HBuilder.add(LangOpts->ObjCRuntime); 4643 HBuilder.addRange(LangOpts->CommentOpts.BlockCommandNames); 4644 4645 // Extend the signature with the target options. 4646 HBuilder.add(TargetOpts->Triple, TargetOpts->CPU, TargetOpts->TuneCPU, 4647 TargetOpts->ABI); 4648 HBuilder.addRange(TargetOpts->FeaturesAsWritten); 4649 4650 // Extend the signature with preprocessor options. 4651 const PreprocessorOptions &ppOpts = getPreprocessorOpts(); 4652 HBuilder.add(ppOpts.UsePredefines, ppOpts.DetailedRecord); 4653 4654 const HeaderSearchOptions &hsOpts = getHeaderSearchOpts(); 4655 for (const auto &Macro : getPreprocessorOpts().Macros) { 4656 // If we're supposed to ignore this macro for the purposes of modules, 4657 // don't put it into the hash. 4658 if (!hsOpts.ModulesIgnoreMacros.empty()) { 4659 // Check whether we're ignoring this macro. 4660 StringRef MacroDef = Macro.first; 4661 if (hsOpts.ModulesIgnoreMacros.count( 4662 llvm::CachedHashString(MacroDef.split('=').first))) 4663 continue; 4664 } 4665 4666 HBuilder.add(Macro); 4667 } 4668 4669 // Extend the signature with the sysroot and other header search options. 4670 HBuilder.add(hsOpts.Sysroot, hsOpts.ModuleFormat, hsOpts.UseDebugInfo, 4671 hsOpts.UseBuiltinIncludes, hsOpts.UseStandardSystemIncludes, 4672 hsOpts.UseStandardCXXIncludes, hsOpts.UseLibcxx, 4673 hsOpts.ModulesValidateDiagnosticOptions); 4674 HBuilder.add(hsOpts.ResourceDir); 4675 4676 if (hsOpts.ModulesStrictContextHash) { 4677 HBuilder.addRange(hsOpts.SystemHeaderPrefixes); 4678 HBuilder.addRange(hsOpts.UserEntries); 4679 4680 const DiagnosticOptions &diagOpts = getDiagnosticOpts(); 4681 #define DIAGOPT(Name, Bits, Default) HBuilder.add(diagOpts.Name); 4682 #define ENUM_DIAGOPT(Name, Type, Bits, Default) \ 4683 HBuilder.add(diagOpts.get##Name()); 4684 #include "clang/Basic/DiagnosticOptions.def" 4685 #undef DIAGOPT 4686 #undef ENUM_DIAGOPT 4687 } 4688 4689 // Extend the signature with the user build path. 4690 HBuilder.add(hsOpts.ModuleUserBuildPath); 4691 4692 // Extend the signature with the module file extensions. 4693 for (const auto &ext : getFrontendOpts().ModuleFileExtensions) 4694 ext->hashExtension(HBuilder); 4695 4696 // When compiling with -gmodules, also hash -fdebug-prefix-map as it 4697 // affects the debug info in the PCM. 4698 if (getCodeGenOpts().DebugTypeExtRefs) 4699 HBuilder.addRange(getCodeGenOpts().DebugPrefixMap); 4700 4701 // Extend the signature with the enabled sanitizers, if at least one is 4702 // enabled. Sanitizers which cannot affect AST generation aren't hashed. 4703 SanitizerSet SanHash = LangOpts->Sanitize; 4704 SanHash.clear(getPPTransparentSanitizers()); 4705 if (!SanHash.empty()) 4706 HBuilder.add(SanHash.Mask); 4707 4708 llvm::MD5::MD5Result Result; 4709 HBuilder.getHasher().final(Result); 4710 uint64_t Hash = Result.high() ^ Result.low(); 4711 return toString(llvm::APInt(64, Hash), 36, /*Signed=*/false); 4712 } 4713 4714 void CompilerInvocation::generateCC1CommandLine( 4715 SmallVectorImpl<const char *> &Args, StringAllocator SA) const { 4716 llvm::Triple T(TargetOpts->Triple); 4717 4718 GenerateFileSystemArgs(FileSystemOpts, Args, SA); 4719 GenerateMigratorArgs(MigratorOpts, Args, SA); 4720 GenerateAnalyzerArgs(*AnalyzerOpts, Args, SA); 4721 GenerateDiagnosticArgs(*DiagnosticOpts, Args, SA, false); 4722 GenerateFrontendArgs(FrontendOpts, Args, SA, LangOpts->IsHeaderFile); 4723 GenerateTargetArgs(*TargetOpts, Args, SA); 4724 GenerateHeaderSearchArgs(*HeaderSearchOpts, Args, SA); 4725 GenerateLangArgs(*LangOpts, Args, SA, T, FrontendOpts.DashX); 4726 GenerateCodeGenArgs(CodeGenOpts, Args, SA, T, FrontendOpts.OutputFile, 4727 &*LangOpts); 4728 GeneratePreprocessorArgs(*PreprocessorOpts, Args, SA, *LangOpts, FrontendOpts, 4729 CodeGenOpts); 4730 GeneratePreprocessorOutputArgs(PreprocessorOutputOpts, Args, SA, 4731 FrontendOpts.ProgramAction); 4732 GenerateDependencyOutputArgs(DependencyOutputOpts, Args, SA); 4733 } 4734 4735 IntrusiveRefCntPtr<llvm::vfs::FileSystem> 4736 clang::createVFSFromCompilerInvocation(const CompilerInvocation &CI, 4737 DiagnosticsEngine &Diags) { 4738 return createVFSFromCompilerInvocation(CI, Diags, 4739 llvm::vfs::getRealFileSystem()); 4740 } 4741 4742 IntrusiveRefCntPtr<llvm::vfs::FileSystem> 4743 clang::createVFSFromCompilerInvocation( 4744 const CompilerInvocation &CI, DiagnosticsEngine &Diags, 4745 IntrusiveRefCntPtr<llvm::vfs::FileSystem> BaseFS) { 4746 if (CI.getHeaderSearchOpts().VFSOverlayFiles.empty()) 4747 return BaseFS; 4748 4749 IntrusiveRefCntPtr<llvm::vfs::FileSystem> Result = BaseFS; 4750 // earlier vfs files are on the bottom 4751 for (const auto &File : CI.getHeaderSearchOpts().VFSOverlayFiles) { 4752 llvm::ErrorOr<std::unique_ptr<llvm::MemoryBuffer>> Buffer = 4753 Result->getBufferForFile(File); 4754 if (!Buffer) { 4755 Diags.Report(diag::err_missing_vfs_overlay_file) << File; 4756 continue; 4757 } 4758 4759 IntrusiveRefCntPtr<llvm::vfs::FileSystem> FS = llvm::vfs::getVFSFromYAML( 4760 std::move(Buffer.get()), /*DiagHandler*/ nullptr, File, 4761 /*DiagContext*/ nullptr, Result); 4762 if (!FS) { 4763 Diags.Report(diag::err_invalid_vfs_overlay) << File; 4764 continue; 4765 } 4766 4767 Result = FS; 4768 } 4769 return Result; 4770 } 4771