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 // Helpers. 111 //===----------------------------------------------------------------------===// 112 113 // Parse misexpect tolerance argument value. 114 // Valid option values are integers in the range [0, 100) 115 inline Expected<Optional<uint64_t>> parseToleranceOption(StringRef Arg) { 116 int64_t Val; 117 if (Arg.getAsInteger(10, Val)) 118 return llvm::createStringError(llvm::inconvertibleErrorCode(), 119 "Not an integer: %s", Arg.data()); 120 return Val; 121 } 122 123 //===----------------------------------------------------------------------===// 124 // Initialization. 125 //===----------------------------------------------------------------------===// 126 127 CompilerInvocationRefBase::CompilerInvocationRefBase() 128 : LangOpts(new LangOptions()), TargetOpts(new TargetOptions()), 129 DiagnosticOpts(new DiagnosticOptions()), 130 HeaderSearchOpts(new HeaderSearchOptions()), 131 PreprocessorOpts(new PreprocessorOptions()), 132 AnalyzerOpts(new AnalyzerOptions()) {} 133 134 CompilerInvocationRefBase::CompilerInvocationRefBase( 135 const CompilerInvocationRefBase &X) 136 : LangOpts(new LangOptions(*X.getLangOpts())), 137 TargetOpts(new TargetOptions(X.getTargetOpts())), 138 DiagnosticOpts(new DiagnosticOptions(X.getDiagnosticOpts())), 139 HeaderSearchOpts(new HeaderSearchOptions(X.getHeaderSearchOpts())), 140 PreprocessorOpts(new PreprocessorOptions(X.getPreprocessorOpts())), 141 AnalyzerOpts(new AnalyzerOptions(*X.getAnalyzerOpts())) {} 142 143 CompilerInvocationRefBase::CompilerInvocationRefBase( 144 CompilerInvocationRefBase &&X) = default; 145 146 CompilerInvocationRefBase & 147 CompilerInvocationRefBase::operator=(CompilerInvocationRefBase X) { 148 LangOpts.swap(X.LangOpts); 149 TargetOpts.swap(X.TargetOpts); 150 DiagnosticOpts.swap(X.DiagnosticOpts); 151 HeaderSearchOpts.swap(X.HeaderSearchOpts); 152 PreprocessorOpts.swap(X.PreprocessorOpts); 153 AnalyzerOpts.swap(X.AnalyzerOpts); 154 return *this; 155 } 156 157 CompilerInvocationRefBase & 158 CompilerInvocationRefBase::operator=(CompilerInvocationRefBase &&X) = default; 159 160 CompilerInvocationRefBase::~CompilerInvocationRefBase() = default; 161 162 //===----------------------------------------------------------------------===// 163 // Normalizers 164 //===----------------------------------------------------------------------===// 165 166 #define SIMPLE_ENUM_VALUE_TABLE 167 #include "clang/Driver/Options.inc" 168 #undef SIMPLE_ENUM_VALUE_TABLE 169 170 static llvm::Optional<bool> normalizeSimpleFlag(OptSpecifier Opt, 171 unsigned TableIndex, 172 const ArgList &Args, 173 DiagnosticsEngine &Diags) { 174 if (Args.hasArg(Opt)) 175 return true; 176 return None; 177 } 178 179 static Optional<bool> normalizeSimpleNegativeFlag(OptSpecifier Opt, unsigned, 180 const ArgList &Args, 181 DiagnosticsEngine &) { 182 if (Args.hasArg(Opt)) 183 return false; 184 return None; 185 } 186 187 /// The tblgen-erated code passes in a fifth parameter of an arbitrary type, but 188 /// denormalizeSimpleFlags never looks at it. Avoid bloating compile-time with 189 /// unnecessary template instantiations and just ignore it with a variadic 190 /// argument. 191 static void denormalizeSimpleFlag(SmallVectorImpl<const char *> &Args, 192 const char *Spelling, 193 CompilerInvocation::StringAllocator, 194 Option::OptionClass, unsigned, /*T*/...) { 195 Args.push_back(Spelling); 196 } 197 198 template <typename T> static constexpr bool is_uint64_t_convertible() { 199 return !std::is_same<T, uint64_t>::value && 200 llvm::is_integral_or_enum<T>::value; 201 } 202 203 template <typename T, 204 std::enable_if_t<!is_uint64_t_convertible<T>(), bool> = false> 205 static auto makeFlagToValueNormalizer(T Value) { 206 return [Value](OptSpecifier Opt, unsigned, const ArgList &Args, 207 DiagnosticsEngine &) -> Optional<T> { 208 if (Args.hasArg(Opt)) 209 return Value; 210 return None; 211 }; 212 } 213 214 template <typename T, 215 std::enable_if_t<is_uint64_t_convertible<T>(), bool> = false> 216 static auto makeFlagToValueNormalizer(T Value) { 217 return makeFlagToValueNormalizer(uint64_t(Value)); 218 } 219 220 static auto makeBooleanOptionNormalizer(bool Value, bool OtherValue, 221 OptSpecifier OtherOpt) { 222 return [Value, OtherValue, OtherOpt](OptSpecifier Opt, unsigned, 223 const ArgList &Args, 224 DiagnosticsEngine &) -> Optional<bool> { 225 if (const Arg *A = Args.getLastArg(Opt, OtherOpt)) { 226 return A->getOption().matches(Opt) ? Value : OtherValue; 227 } 228 return None; 229 }; 230 } 231 232 static auto makeBooleanOptionDenormalizer(bool Value) { 233 return [Value](SmallVectorImpl<const char *> &Args, const char *Spelling, 234 CompilerInvocation::StringAllocator, Option::OptionClass, 235 unsigned, bool KeyPath) { 236 if (KeyPath == Value) 237 Args.push_back(Spelling); 238 }; 239 } 240 241 static void denormalizeStringImpl(SmallVectorImpl<const char *> &Args, 242 const char *Spelling, 243 CompilerInvocation::StringAllocator SA, 244 Option::OptionClass OptClass, unsigned, 245 const Twine &Value) { 246 switch (OptClass) { 247 case Option::SeparateClass: 248 case Option::JoinedOrSeparateClass: 249 case Option::JoinedAndSeparateClass: 250 Args.push_back(Spelling); 251 Args.push_back(SA(Value)); 252 break; 253 case Option::JoinedClass: 254 case Option::CommaJoinedClass: 255 Args.push_back(SA(Twine(Spelling) + Value)); 256 break; 257 default: 258 llvm_unreachable("Cannot denormalize an option with option class " 259 "incompatible with string denormalization."); 260 } 261 } 262 263 template <typename T> 264 static void 265 denormalizeString(SmallVectorImpl<const char *> &Args, const char *Spelling, 266 CompilerInvocation::StringAllocator SA, 267 Option::OptionClass OptClass, unsigned TableIndex, T Value) { 268 denormalizeStringImpl(Args, Spelling, SA, OptClass, TableIndex, Twine(Value)); 269 } 270 271 static Optional<SimpleEnumValue> 272 findValueTableByName(const SimpleEnumValueTable &Table, StringRef Name) { 273 for (int I = 0, E = Table.Size; I != E; ++I) 274 if (Name == Table.Table[I].Name) 275 return Table.Table[I]; 276 277 return None; 278 } 279 280 static Optional<SimpleEnumValue> 281 findValueTableByValue(const SimpleEnumValueTable &Table, unsigned Value) { 282 for (int I = 0, E = Table.Size; I != E; ++I) 283 if (Value == Table.Table[I].Value) 284 return Table.Table[I]; 285 286 return None; 287 } 288 289 static llvm::Optional<unsigned> normalizeSimpleEnum(OptSpecifier Opt, 290 unsigned TableIndex, 291 const ArgList &Args, 292 DiagnosticsEngine &Diags) { 293 assert(TableIndex < SimpleEnumValueTablesSize); 294 const SimpleEnumValueTable &Table = SimpleEnumValueTables[TableIndex]; 295 296 auto *Arg = Args.getLastArg(Opt); 297 if (!Arg) 298 return None; 299 300 StringRef ArgValue = Arg->getValue(); 301 if (auto MaybeEnumVal = findValueTableByName(Table, ArgValue)) 302 return MaybeEnumVal->Value; 303 304 Diags.Report(diag::err_drv_invalid_value) 305 << Arg->getAsString(Args) << ArgValue; 306 return None; 307 } 308 309 static void denormalizeSimpleEnumImpl(SmallVectorImpl<const char *> &Args, 310 const char *Spelling, 311 CompilerInvocation::StringAllocator SA, 312 Option::OptionClass OptClass, 313 unsigned TableIndex, unsigned Value) { 314 assert(TableIndex < SimpleEnumValueTablesSize); 315 const SimpleEnumValueTable &Table = SimpleEnumValueTables[TableIndex]; 316 if (auto MaybeEnumVal = findValueTableByValue(Table, Value)) { 317 denormalizeString(Args, Spelling, SA, OptClass, TableIndex, 318 MaybeEnumVal->Name); 319 } else { 320 llvm_unreachable("The simple enum value was not correctly defined in " 321 "the tablegen option description"); 322 } 323 } 324 325 template <typename T> 326 static void denormalizeSimpleEnum(SmallVectorImpl<const char *> &Args, 327 const char *Spelling, 328 CompilerInvocation::StringAllocator SA, 329 Option::OptionClass OptClass, 330 unsigned TableIndex, T Value) { 331 return denormalizeSimpleEnumImpl(Args, Spelling, SA, OptClass, TableIndex, 332 static_cast<unsigned>(Value)); 333 } 334 335 static Optional<std::string> normalizeString(OptSpecifier Opt, int TableIndex, 336 const ArgList &Args, 337 DiagnosticsEngine &Diags) { 338 auto *Arg = Args.getLastArg(Opt); 339 if (!Arg) 340 return None; 341 return std::string(Arg->getValue()); 342 } 343 344 template <typename IntTy> 345 static Optional<IntTy> normalizeStringIntegral(OptSpecifier Opt, int, 346 const ArgList &Args, 347 DiagnosticsEngine &Diags) { 348 auto *Arg = Args.getLastArg(Opt); 349 if (!Arg) 350 return None; 351 IntTy Res; 352 if (StringRef(Arg->getValue()).getAsInteger(0, Res)) { 353 Diags.Report(diag::err_drv_invalid_int_value) 354 << Arg->getAsString(Args) << Arg->getValue(); 355 return None; 356 } 357 return Res; 358 } 359 360 static Optional<std::vector<std::string>> 361 normalizeStringVector(OptSpecifier Opt, int, const ArgList &Args, 362 DiagnosticsEngine &) { 363 return Args.getAllArgValues(Opt); 364 } 365 366 static void denormalizeStringVector(SmallVectorImpl<const char *> &Args, 367 const char *Spelling, 368 CompilerInvocation::StringAllocator SA, 369 Option::OptionClass OptClass, 370 unsigned TableIndex, 371 const std::vector<std::string> &Values) { 372 switch (OptClass) { 373 case Option::CommaJoinedClass: { 374 std::string CommaJoinedValue; 375 if (!Values.empty()) { 376 CommaJoinedValue.append(Values.front()); 377 for (const std::string &Value : llvm::drop_begin(Values, 1)) { 378 CommaJoinedValue.append(","); 379 CommaJoinedValue.append(Value); 380 } 381 } 382 denormalizeString(Args, Spelling, SA, Option::OptionClass::JoinedClass, 383 TableIndex, CommaJoinedValue); 384 break; 385 } 386 case Option::JoinedClass: 387 case Option::SeparateClass: 388 case Option::JoinedOrSeparateClass: 389 for (const std::string &Value : Values) 390 denormalizeString(Args, Spelling, SA, OptClass, TableIndex, Value); 391 break; 392 default: 393 llvm_unreachable("Cannot denormalize an option with option class " 394 "incompatible with string vector denormalization."); 395 } 396 } 397 398 static Optional<std::string> normalizeTriple(OptSpecifier Opt, int TableIndex, 399 const ArgList &Args, 400 DiagnosticsEngine &Diags) { 401 auto *Arg = Args.getLastArg(Opt); 402 if (!Arg) 403 return None; 404 return llvm::Triple::normalize(Arg->getValue()); 405 } 406 407 template <typename T, typename U> 408 static T mergeForwardValue(T KeyPath, U Value) { 409 return static_cast<T>(Value); 410 } 411 412 template <typename T, typename U> static T mergeMaskValue(T KeyPath, U Value) { 413 return KeyPath | Value; 414 } 415 416 template <typename T> static T extractForwardValue(T KeyPath) { 417 return KeyPath; 418 } 419 420 template <typename T, typename U, U Value> 421 static T extractMaskValue(T KeyPath) { 422 return ((KeyPath & Value) == Value) ? static_cast<T>(Value) : T(); 423 } 424 425 #define PARSE_OPTION_WITH_MARSHALLING( \ 426 ARGS, DIAGS, ID, FLAGS, PARAM, SHOULD_PARSE, KEYPATH, DEFAULT_VALUE, \ 427 IMPLIED_CHECK, IMPLIED_VALUE, NORMALIZER, MERGER, TABLE_INDEX) \ 428 if ((FLAGS)&options::CC1Option) { \ 429 KEYPATH = MERGER(KEYPATH, DEFAULT_VALUE); \ 430 if (IMPLIED_CHECK) \ 431 KEYPATH = MERGER(KEYPATH, IMPLIED_VALUE); \ 432 if (SHOULD_PARSE) \ 433 if (auto MaybeValue = NORMALIZER(OPT_##ID, TABLE_INDEX, ARGS, DIAGS)) \ 434 KEYPATH = \ 435 MERGER(KEYPATH, static_cast<decltype(KEYPATH)>(*MaybeValue)); \ 436 } 437 438 // Capture the extracted value as a lambda argument to avoid potential issues 439 // with lifetime extension of the reference. 440 #define GENERATE_OPTION_WITH_MARSHALLING( \ 441 ARGS, STRING_ALLOCATOR, KIND, FLAGS, SPELLING, ALWAYS_EMIT, KEYPATH, \ 442 DEFAULT_VALUE, IMPLIED_CHECK, IMPLIED_VALUE, DENORMALIZER, EXTRACTOR, \ 443 TABLE_INDEX) \ 444 if ((FLAGS)&options::CC1Option) { \ 445 [&](const auto &Extracted) { \ 446 if (ALWAYS_EMIT || \ 447 (Extracted != \ 448 static_cast<decltype(KEYPATH)>((IMPLIED_CHECK) ? (IMPLIED_VALUE) \ 449 : (DEFAULT_VALUE)))) \ 450 DENORMALIZER(ARGS, SPELLING, STRING_ALLOCATOR, Option::KIND##Class, \ 451 TABLE_INDEX, Extracted); \ 452 }(EXTRACTOR(KEYPATH)); \ 453 } 454 455 static StringRef GetInputKindName(InputKind IK); 456 457 static bool FixupInvocation(CompilerInvocation &Invocation, 458 DiagnosticsEngine &Diags, const ArgList &Args, 459 InputKind IK) { 460 unsigned NumErrorsBefore = Diags.getNumErrors(); 461 462 LangOptions &LangOpts = *Invocation.getLangOpts(); 463 CodeGenOptions &CodeGenOpts = Invocation.getCodeGenOpts(); 464 TargetOptions &TargetOpts = Invocation.getTargetOpts(); 465 FrontendOptions &FrontendOpts = Invocation.getFrontendOpts(); 466 CodeGenOpts.XRayInstrumentFunctions = LangOpts.XRayInstrument; 467 CodeGenOpts.XRayAlwaysEmitCustomEvents = LangOpts.XRayAlwaysEmitCustomEvents; 468 CodeGenOpts.XRayAlwaysEmitTypedEvents = LangOpts.XRayAlwaysEmitTypedEvents; 469 CodeGenOpts.DisableFree = FrontendOpts.DisableFree; 470 FrontendOpts.GenerateGlobalModuleIndex = FrontendOpts.UseGlobalModuleIndex; 471 if (FrontendOpts.ShowStats) 472 CodeGenOpts.ClearASTBeforeBackend = false; 473 LangOpts.SanitizeCoverage = CodeGenOpts.hasSanitizeCoverage(); 474 LangOpts.ForceEmitVTables = CodeGenOpts.ForceEmitVTables; 475 LangOpts.SpeculativeLoadHardening = CodeGenOpts.SpeculativeLoadHardening; 476 LangOpts.CurrentModule = LangOpts.ModuleName; 477 478 llvm::Triple T(TargetOpts.Triple); 479 llvm::Triple::ArchType Arch = T.getArch(); 480 481 CodeGenOpts.CodeModel = TargetOpts.CodeModel; 482 483 if (LangOpts.getExceptionHandling() != 484 LangOptions::ExceptionHandlingKind::None && 485 T.isWindowsMSVCEnvironment()) 486 Diags.Report(diag::err_fe_invalid_exception_model) 487 << static_cast<unsigned>(LangOpts.getExceptionHandling()) << T.str(); 488 489 if (LangOpts.AppleKext && !LangOpts.CPlusPlus) 490 Diags.Report(diag::warn_c_kext); 491 492 if (Args.hasArg(OPT_fconcepts_ts)) 493 Diags.Report(diag::warn_fe_concepts_ts_flag); 494 495 if (LangOpts.NewAlignOverride && 496 !llvm::isPowerOf2_32(LangOpts.NewAlignOverride)) { 497 Arg *A = Args.getLastArg(OPT_fnew_alignment_EQ); 498 Diags.Report(diag::err_fe_invalid_alignment) 499 << A->getAsString(Args) << A->getValue(); 500 LangOpts.NewAlignOverride = 0; 501 } 502 503 // Prevent the user from specifying both -fsycl-is-device and -fsycl-is-host. 504 if (LangOpts.SYCLIsDevice && LangOpts.SYCLIsHost) 505 Diags.Report(diag::err_drv_argument_not_allowed_with) << "-fsycl-is-device" 506 << "-fsycl-is-host"; 507 508 if (Args.hasArg(OPT_fgnu89_inline) && LangOpts.CPlusPlus) 509 Diags.Report(diag::err_drv_argument_not_allowed_with) 510 << "-fgnu89-inline" << GetInputKindName(IK); 511 512 if (Args.hasArg(OPT_fgpu_allow_device_init) && !LangOpts.HIP) 513 Diags.Report(diag::warn_ignored_hip_only_option) 514 << Args.getLastArg(OPT_fgpu_allow_device_init)->getAsString(Args); 515 516 if (Args.hasArg(OPT_gpu_max_threads_per_block_EQ) && !LangOpts.HIP) 517 Diags.Report(diag::warn_ignored_hip_only_option) 518 << Args.getLastArg(OPT_gpu_max_threads_per_block_EQ)->getAsString(Args); 519 520 // -cl-strict-aliasing needs to emit diagnostic in the case where CL > 1.0. 521 // This option should be deprecated for CL > 1.0 because 522 // this option was added for compatibility with OpenCL 1.0. 523 if (Args.getLastArg(OPT_cl_strict_aliasing) && 524 (LangOpts.getOpenCLCompatibleVersion() > 100)) 525 Diags.Report(diag::warn_option_invalid_ocl_version) 526 << LangOpts.getOpenCLVersionString() 527 << Args.getLastArg(OPT_cl_strict_aliasing)->getAsString(Args); 528 529 if (Arg *A = Args.getLastArg(OPT_fdefault_calling_conv_EQ)) { 530 auto DefaultCC = LangOpts.getDefaultCallingConv(); 531 532 bool emitError = (DefaultCC == LangOptions::DCC_FastCall || 533 DefaultCC == LangOptions::DCC_StdCall) && 534 Arch != llvm::Triple::x86; 535 emitError |= (DefaultCC == LangOptions::DCC_VectorCall || 536 DefaultCC == LangOptions::DCC_RegCall) && 537 !T.isX86(); 538 if (emitError) 539 Diags.Report(diag::err_drv_argument_not_allowed_with) 540 << A->getSpelling() << T.getTriple(); 541 } 542 543 if (!CodeGenOpts.ProfileRemappingFile.empty() && CodeGenOpts.LegacyPassManager) 544 Diags.Report(diag::err_drv_argument_only_allowed_with) 545 << Args.getLastArg(OPT_fprofile_remapping_file_EQ)->getAsString(Args) 546 << "-fno-legacy-pass-manager"; 547 548 return Diags.getNumErrors() == NumErrorsBefore; 549 } 550 551 //===----------------------------------------------------------------------===// 552 // Deserialization (from args) 553 //===----------------------------------------------------------------------===// 554 555 static unsigned getOptimizationLevel(ArgList &Args, InputKind IK, 556 DiagnosticsEngine &Diags) { 557 unsigned DefaultOpt = llvm::CodeGenOpt::None; 558 if ((IK.getLanguage() == Language::OpenCL || 559 IK.getLanguage() == Language::OpenCLCXX) && 560 !Args.hasArg(OPT_cl_opt_disable)) 561 DefaultOpt = llvm::CodeGenOpt::Default; 562 563 if (Arg *A = Args.getLastArg(options::OPT_O_Group)) { 564 if (A->getOption().matches(options::OPT_O0)) 565 return llvm::CodeGenOpt::None; 566 567 if (A->getOption().matches(options::OPT_Ofast)) 568 return llvm::CodeGenOpt::Aggressive; 569 570 assert(A->getOption().matches(options::OPT_O)); 571 572 StringRef S(A->getValue()); 573 if (S == "s" || S == "z") 574 return llvm::CodeGenOpt::Default; 575 576 if (S == "g") 577 return llvm::CodeGenOpt::Less; 578 579 return getLastArgIntValue(Args, OPT_O, DefaultOpt, Diags); 580 } 581 582 return DefaultOpt; 583 } 584 585 static unsigned getOptimizationLevelSize(ArgList &Args) { 586 if (Arg *A = Args.getLastArg(options::OPT_O_Group)) { 587 if (A->getOption().matches(options::OPT_O)) { 588 switch (A->getValue()[0]) { 589 default: 590 return 0; 591 case 's': 592 return 1; 593 case 'z': 594 return 2; 595 } 596 } 597 } 598 return 0; 599 } 600 601 static void GenerateArg(SmallVectorImpl<const char *> &Args, 602 llvm::opt::OptSpecifier OptSpecifier, 603 CompilerInvocation::StringAllocator SA) { 604 Option Opt = getDriverOptTable().getOption(OptSpecifier); 605 denormalizeSimpleFlag(Args, SA(Opt.getPrefix() + Opt.getName()), SA, 606 Option::OptionClass::FlagClass, 0); 607 } 608 609 static void GenerateArg(SmallVectorImpl<const char *> &Args, 610 llvm::opt::OptSpecifier OptSpecifier, 611 const Twine &Value, 612 CompilerInvocation::StringAllocator SA) { 613 Option Opt = getDriverOptTable().getOption(OptSpecifier); 614 denormalizeString(Args, SA(Opt.getPrefix() + Opt.getName()), SA, 615 Opt.getKind(), 0, Value); 616 } 617 618 // Parse command line arguments into CompilerInvocation. 619 using ParseFn = 620 llvm::function_ref<bool(CompilerInvocation &, ArrayRef<const char *>, 621 DiagnosticsEngine &, const char *)>; 622 623 // Generate command line arguments from CompilerInvocation. 624 using GenerateFn = llvm::function_ref<void( 625 CompilerInvocation &, SmallVectorImpl<const char *> &, 626 CompilerInvocation::StringAllocator)>; 627 628 // May perform round-trip of command line arguments. By default, the round-trip 629 // is enabled in assert builds. This can be overwritten at run-time via the 630 // "-round-trip-args" and "-no-round-trip-args" command line flags. 631 // During round-trip, the command line arguments are parsed into a dummy 632 // instance of CompilerInvocation which is used to generate the command line 633 // arguments again. The real CompilerInvocation instance is then created by 634 // parsing the generated arguments, not the original ones. 635 static bool RoundTrip(ParseFn Parse, GenerateFn Generate, 636 CompilerInvocation &RealInvocation, 637 CompilerInvocation &DummyInvocation, 638 ArrayRef<const char *> CommandLineArgs, 639 DiagnosticsEngine &Diags, const char *Argv0) { 640 #ifndef NDEBUG 641 bool DoRoundTripDefault = true; 642 #else 643 bool DoRoundTripDefault = false; 644 #endif 645 646 bool DoRoundTrip = DoRoundTripDefault; 647 for (const auto *Arg : CommandLineArgs) { 648 if (Arg == StringRef("-round-trip-args")) 649 DoRoundTrip = true; 650 if (Arg == StringRef("-no-round-trip-args")) 651 DoRoundTrip = false; 652 } 653 654 // If round-trip was not requested, simply run the parser with the real 655 // invocation diagnostics. 656 if (!DoRoundTrip) 657 return Parse(RealInvocation, CommandLineArgs, Diags, Argv0); 658 659 // Serializes quoted (and potentially escaped) arguments. 660 auto SerializeArgs = [](ArrayRef<const char *> Args) { 661 std::string Buffer; 662 llvm::raw_string_ostream OS(Buffer); 663 for (const char *Arg : Args) { 664 llvm::sys::printArg(OS, Arg, /*Quote=*/true); 665 OS << ' '; 666 } 667 OS.flush(); 668 return Buffer; 669 }; 670 671 // Setup a dummy DiagnosticsEngine. 672 DiagnosticsEngine DummyDiags(new DiagnosticIDs(), new DiagnosticOptions()); 673 DummyDiags.setClient(new TextDiagnosticBuffer()); 674 675 // Run the first parse on the original arguments with the dummy invocation and 676 // diagnostics. 677 if (!Parse(DummyInvocation, CommandLineArgs, DummyDiags, Argv0) || 678 DummyDiags.getNumWarnings() != 0) { 679 // If the first parse did not succeed, it must be user mistake (invalid 680 // command line arguments). We won't be able to generate arguments that 681 // would reproduce the same result. Let's fail again with the real 682 // invocation and diagnostics, so all side-effects of parsing are visible. 683 unsigned NumWarningsBefore = Diags.getNumWarnings(); 684 auto Success = Parse(RealInvocation, CommandLineArgs, Diags, Argv0); 685 if (!Success || Diags.getNumWarnings() != NumWarningsBefore) 686 return Success; 687 688 // Parse with original options and diagnostics succeeded even though it 689 // shouldn't have. Something is off. 690 Diags.Report(diag::err_cc1_round_trip_fail_then_ok); 691 Diags.Report(diag::note_cc1_round_trip_original) 692 << SerializeArgs(CommandLineArgs); 693 return false; 694 } 695 696 // Setup string allocator. 697 llvm::BumpPtrAllocator Alloc; 698 llvm::StringSaver StringPool(Alloc); 699 auto SA = [&StringPool](const Twine &Arg) { 700 return StringPool.save(Arg).data(); 701 }; 702 703 // Generate arguments from the dummy invocation. If Generate is the 704 // inverse of Parse, the newly generated arguments must have the same 705 // semantics as the original. 706 SmallVector<const char *> GeneratedArgs1; 707 Generate(DummyInvocation, GeneratedArgs1, SA); 708 709 // Run the second parse, now on the generated arguments, and with the real 710 // invocation and diagnostics. The result is what we will end up using for the 711 // rest of compilation, so if Generate is not inverse of Parse, something down 712 // the line will break. 713 bool Success2 = Parse(RealInvocation, GeneratedArgs1, Diags, Argv0); 714 715 // The first parse on original arguments succeeded, but second parse of 716 // generated arguments failed. Something must be wrong with the generator. 717 if (!Success2) { 718 Diags.Report(diag::err_cc1_round_trip_ok_then_fail); 719 Diags.Report(diag::note_cc1_round_trip_generated) 720 << 1 << SerializeArgs(GeneratedArgs1); 721 return false; 722 } 723 724 // Generate arguments again, this time from the options we will end up using 725 // for the rest of the compilation. 726 SmallVector<const char *> GeneratedArgs2; 727 Generate(RealInvocation, GeneratedArgs2, SA); 728 729 // Compares two lists of generated arguments. 730 auto Equal = [](const ArrayRef<const char *> A, 731 const ArrayRef<const char *> B) { 732 return std::equal(A.begin(), A.end(), B.begin(), B.end(), 733 [](const char *AElem, const char *BElem) { 734 return StringRef(AElem) == StringRef(BElem); 735 }); 736 }; 737 738 // If we generated different arguments from what we assume are two 739 // semantically equivalent CompilerInvocations, the Generate function may 740 // be non-deterministic. 741 if (!Equal(GeneratedArgs1, GeneratedArgs2)) { 742 Diags.Report(diag::err_cc1_round_trip_mismatch); 743 Diags.Report(diag::note_cc1_round_trip_generated) 744 << 1 << SerializeArgs(GeneratedArgs1); 745 Diags.Report(diag::note_cc1_round_trip_generated) 746 << 2 << SerializeArgs(GeneratedArgs2); 747 return false; 748 } 749 750 Diags.Report(diag::remark_cc1_round_trip_generated) 751 << 1 << SerializeArgs(GeneratedArgs1); 752 Diags.Report(diag::remark_cc1_round_trip_generated) 753 << 2 << SerializeArgs(GeneratedArgs2); 754 755 return Success2; 756 } 757 758 static void addDiagnosticArgs(ArgList &Args, OptSpecifier Group, 759 OptSpecifier GroupWithValue, 760 std::vector<std::string> &Diagnostics) { 761 for (auto *A : Args.filtered(Group)) { 762 if (A->getOption().getKind() == Option::FlagClass) { 763 // The argument is a pure flag (such as OPT_Wall or OPT_Wdeprecated). Add 764 // its name (minus the "W" or "R" at the beginning) to the diagnostics. 765 Diagnostics.push_back( 766 std::string(A->getOption().getName().drop_front(1))); 767 } else if (A->getOption().matches(GroupWithValue)) { 768 // This is -Wfoo= or -Rfoo=, where foo is the name of the diagnostic 769 // group. Add only the group name to the diagnostics. 770 Diagnostics.push_back( 771 std::string(A->getOption().getName().drop_front(1).rtrim("=-"))); 772 } else { 773 // Otherwise, add its value (for OPT_W_Joined and similar). 774 Diagnostics.push_back(A->getValue()); 775 } 776 } 777 } 778 779 // Parse the Static Analyzer configuration. If \p Diags is set to nullptr, 780 // it won't verify the input. 781 static void parseAnalyzerConfigs(AnalyzerOptions &AnOpts, 782 DiagnosticsEngine *Diags); 783 784 static void getAllNoBuiltinFuncValues(ArgList &Args, 785 std::vector<std::string> &Funcs) { 786 std::vector<std::string> Values = Args.getAllArgValues(OPT_fno_builtin_); 787 auto BuiltinEnd = llvm::partition(Values, Builtin::Context::isBuiltinFunc); 788 Funcs.insert(Funcs.end(), Values.begin(), BuiltinEnd); 789 } 790 791 static void GenerateAnalyzerArgs(AnalyzerOptions &Opts, 792 SmallVectorImpl<const char *> &Args, 793 CompilerInvocation::StringAllocator SA) { 794 const AnalyzerOptions *AnalyzerOpts = &Opts; 795 796 #define ANALYZER_OPTION_WITH_MARSHALLING( \ 797 PREFIX_TYPE, NAME, ID, KIND, GROUP, ALIAS, ALIASARGS, FLAGS, PARAM, \ 798 HELPTEXT, METAVAR, VALUES, SPELLING, SHOULD_PARSE, ALWAYS_EMIT, KEYPATH, \ 799 DEFAULT_VALUE, IMPLIED_CHECK, IMPLIED_VALUE, NORMALIZER, DENORMALIZER, \ 800 MERGER, EXTRACTOR, TABLE_INDEX) \ 801 GENERATE_OPTION_WITH_MARSHALLING( \ 802 Args, SA, KIND, FLAGS, SPELLING, ALWAYS_EMIT, KEYPATH, DEFAULT_VALUE, \ 803 IMPLIED_CHECK, IMPLIED_VALUE, DENORMALIZER, EXTRACTOR, TABLE_INDEX) 804 #include "clang/Driver/Options.inc" 805 #undef ANALYZER_OPTION_WITH_MARSHALLING 806 807 if (Opts.AnalysisStoreOpt != RegionStoreModel) { 808 switch (Opts.AnalysisStoreOpt) { 809 #define ANALYSIS_STORE(NAME, CMDFLAG, DESC, CREATFN) \ 810 case NAME##Model: \ 811 GenerateArg(Args, OPT_analyzer_store, CMDFLAG, SA); \ 812 break; 813 #include "clang/StaticAnalyzer/Core/Analyses.def" 814 default: 815 llvm_unreachable("Tried to generate unknown analysis store."); 816 } 817 } 818 819 if (Opts.AnalysisConstraintsOpt != RangeConstraintsModel) { 820 switch (Opts.AnalysisConstraintsOpt) { 821 #define ANALYSIS_CONSTRAINTS(NAME, CMDFLAG, DESC, CREATFN) \ 822 case NAME##Model: \ 823 GenerateArg(Args, OPT_analyzer_constraints, CMDFLAG, SA); \ 824 break; 825 #include "clang/StaticAnalyzer/Core/Analyses.def" 826 default: 827 llvm_unreachable("Tried to generate unknown analysis constraint."); 828 } 829 } 830 831 if (Opts.AnalysisDiagOpt != PD_HTML) { 832 switch (Opts.AnalysisDiagOpt) { 833 #define ANALYSIS_DIAGNOSTICS(NAME, CMDFLAG, DESC, CREATFN) \ 834 case PD_##NAME: \ 835 GenerateArg(Args, OPT_analyzer_output, CMDFLAG, SA); \ 836 break; 837 #include "clang/StaticAnalyzer/Core/Analyses.def" 838 default: 839 llvm_unreachable("Tried to generate unknown analysis diagnostic client."); 840 } 841 } 842 843 if (Opts.AnalysisPurgeOpt != PurgeStmt) { 844 switch (Opts.AnalysisPurgeOpt) { 845 #define ANALYSIS_PURGE(NAME, CMDFLAG, DESC) \ 846 case NAME: \ 847 GenerateArg(Args, OPT_analyzer_purge, CMDFLAG, SA); \ 848 break; 849 #include "clang/StaticAnalyzer/Core/Analyses.def" 850 default: 851 llvm_unreachable("Tried to generate unknown analysis purge mode."); 852 } 853 } 854 855 if (Opts.InliningMode != NoRedundancy) { 856 switch (Opts.InliningMode) { 857 #define ANALYSIS_INLINING_MODE(NAME, CMDFLAG, DESC) \ 858 case NAME: \ 859 GenerateArg(Args, OPT_analyzer_inlining_mode, CMDFLAG, SA); \ 860 break; 861 #include "clang/StaticAnalyzer/Core/Analyses.def" 862 default: 863 llvm_unreachable("Tried to generate unknown analysis inlining mode."); 864 } 865 } 866 867 for (const auto &CP : Opts.CheckersAndPackages) { 868 OptSpecifier Opt = 869 CP.second ? OPT_analyzer_checker : OPT_analyzer_disable_checker; 870 GenerateArg(Args, Opt, CP.first, SA); 871 } 872 873 AnalyzerOptions ConfigOpts; 874 parseAnalyzerConfigs(ConfigOpts, nullptr); 875 876 for (const auto &C : Opts.Config) { 877 // Don't generate anything that came from parseAnalyzerConfigs. It would be 878 // redundant and may not be valid on the command line. 879 auto Entry = ConfigOpts.Config.find(C.getKey()); 880 if (Entry != ConfigOpts.Config.end() && Entry->getValue() == C.getValue()) 881 continue; 882 883 GenerateArg(Args, OPT_analyzer_config, C.getKey() + "=" + C.getValue(), SA); 884 } 885 886 // Nothing to generate for FullCompilerInvocation. 887 } 888 889 static bool ParseAnalyzerArgs(AnalyzerOptions &Opts, ArgList &Args, 890 DiagnosticsEngine &Diags) { 891 unsigned NumErrorsBefore = Diags.getNumErrors(); 892 893 AnalyzerOptions *AnalyzerOpts = &Opts; 894 895 #define ANALYZER_OPTION_WITH_MARSHALLING( \ 896 PREFIX_TYPE, NAME, ID, KIND, GROUP, ALIAS, ALIASARGS, FLAGS, PARAM, \ 897 HELPTEXT, METAVAR, VALUES, SPELLING, SHOULD_PARSE, ALWAYS_EMIT, KEYPATH, \ 898 DEFAULT_VALUE, IMPLIED_CHECK, IMPLIED_VALUE, NORMALIZER, DENORMALIZER, \ 899 MERGER, EXTRACTOR, TABLE_INDEX) \ 900 PARSE_OPTION_WITH_MARSHALLING( \ 901 Args, Diags, ID, FLAGS, PARAM, SHOULD_PARSE, KEYPATH, DEFAULT_VALUE, \ 902 IMPLIED_CHECK, IMPLIED_VALUE, NORMALIZER, MERGER, TABLE_INDEX) 903 #include "clang/Driver/Options.inc" 904 #undef ANALYZER_OPTION_WITH_MARSHALLING 905 906 if (Arg *A = Args.getLastArg(OPT_analyzer_store)) { 907 StringRef Name = A->getValue(); 908 AnalysisStores Value = llvm::StringSwitch<AnalysisStores>(Name) 909 #define ANALYSIS_STORE(NAME, CMDFLAG, DESC, CREATFN) \ 910 .Case(CMDFLAG, NAME##Model) 911 #include "clang/StaticAnalyzer/Core/Analyses.def" 912 .Default(NumStores); 913 if (Value == NumStores) { 914 Diags.Report(diag::err_drv_invalid_value) 915 << A->getAsString(Args) << Name; 916 } else { 917 Opts.AnalysisStoreOpt = Value; 918 } 919 } 920 921 if (Arg *A = Args.getLastArg(OPT_analyzer_constraints)) { 922 StringRef Name = A->getValue(); 923 AnalysisConstraints Value = llvm::StringSwitch<AnalysisConstraints>(Name) 924 #define ANALYSIS_CONSTRAINTS(NAME, CMDFLAG, DESC, CREATFN) \ 925 .Case(CMDFLAG, NAME##Model) 926 #include "clang/StaticAnalyzer/Core/Analyses.def" 927 .Default(NumConstraints); 928 if (Value == NumConstraints) { 929 Diags.Report(diag::err_drv_invalid_value) 930 << A->getAsString(Args) << Name; 931 } else { 932 #ifndef LLVM_WITH_Z3 933 if (Value == AnalysisConstraints::Z3ConstraintsModel) { 934 Diags.Report(diag::err_analyzer_not_built_with_z3); 935 } 936 #endif // LLVM_WITH_Z3 937 Opts.AnalysisConstraintsOpt = Value; 938 } 939 } 940 941 if (Arg *A = Args.getLastArg(OPT_analyzer_output)) { 942 StringRef Name = A->getValue(); 943 AnalysisDiagClients Value = llvm::StringSwitch<AnalysisDiagClients>(Name) 944 #define ANALYSIS_DIAGNOSTICS(NAME, CMDFLAG, DESC, CREATFN) \ 945 .Case(CMDFLAG, PD_##NAME) 946 #include "clang/StaticAnalyzer/Core/Analyses.def" 947 .Default(NUM_ANALYSIS_DIAG_CLIENTS); 948 if (Value == NUM_ANALYSIS_DIAG_CLIENTS) { 949 Diags.Report(diag::err_drv_invalid_value) 950 << A->getAsString(Args) << Name; 951 } else { 952 Opts.AnalysisDiagOpt = Value; 953 } 954 } 955 956 if (Arg *A = Args.getLastArg(OPT_analyzer_purge)) { 957 StringRef Name = A->getValue(); 958 AnalysisPurgeMode Value = llvm::StringSwitch<AnalysisPurgeMode>(Name) 959 #define ANALYSIS_PURGE(NAME, CMDFLAG, DESC) \ 960 .Case(CMDFLAG, NAME) 961 #include "clang/StaticAnalyzer/Core/Analyses.def" 962 .Default(NumPurgeModes); 963 if (Value == NumPurgeModes) { 964 Diags.Report(diag::err_drv_invalid_value) 965 << A->getAsString(Args) << Name; 966 } else { 967 Opts.AnalysisPurgeOpt = Value; 968 } 969 } 970 971 if (Arg *A = Args.getLastArg(OPT_analyzer_inlining_mode)) { 972 StringRef Name = A->getValue(); 973 AnalysisInliningMode Value = llvm::StringSwitch<AnalysisInliningMode>(Name) 974 #define ANALYSIS_INLINING_MODE(NAME, CMDFLAG, DESC) \ 975 .Case(CMDFLAG, NAME) 976 #include "clang/StaticAnalyzer/Core/Analyses.def" 977 .Default(NumInliningModes); 978 if (Value == NumInliningModes) { 979 Diags.Report(diag::err_drv_invalid_value) 980 << A->getAsString(Args) << Name; 981 } else { 982 Opts.InliningMode = Value; 983 } 984 } 985 986 Opts.CheckersAndPackages.clear(); 987 for (const Arg *A : 988 Args.filtered(OPT_analyzer_checker, OPT_analyzer_disable_checker)) { 989 A->claim(); 990 bool IsEnabled = A->getOption().getID() == OPT_analyzer_checker; 991 // We can have a list of comma separated checker names, e.g: 992 // '-analyzer-checker=cocoa,unix' 993 StringRef CheckerAndPackageList = A->getValue(); 994 SmallVector<StringRef, 16> CheckersAndPackages; 995 CheckerAndPackageList.split(CheckersAndPackages, ","); 996 for (const StringRef &CheckerOrPackage : CheckersAndPackages) 997 Opts.CheckersAndPackages.emplace_back(std::string(CheckerOrPackage), 998 IsEnabled); 999 } 1000 1001 // Go through the analyzer configuration options. 1002 for (const auto *A : Args.filtered(OPT_analyzer_config)) { 1003 1004 // We can have a list of comma separated config names, e.g: 1005 // '-analyzer-config key1=val1,key2=val2' 1006 StringRef configList = A->getValue(); 1007 SmallVector<StringRef, 4> configVals; 1008 configList.split(configVals, ","); 1009 for (const auto &configVal : configVals) { 1010 StringRef key, val; 1011 std::tie(key, val) = configVal.split("="); 1012 if (val.empty()) { 1013 Diags.Report(SourceLocation(), 1014 diag::err_analyzer_config_no_value) << configVal; 1015 break; 1016 } 1017 if (val.contains('=')) { 1018 Diags.Report(SourceLocation(), 1019 diag::err_analyzer_config_multiple_values) 1020 << configVal; 1021 break; 1022 } 1023 1024 // TODO: Check checker options too, possibly in CheckerRegistry. 1025 // Leave unknown non-checker configs unclaimed. 1026 if (!key.contains(":") && Opts.isUnknownAnalyzerConfig(key)) { 1027 if (Opts.ShouldEmitErrorsOnInvalidConfigValue) 1028 Diags.Report(diag::err_analyzer_config_unknown) << key; 1029 continue; 1030 } 1031 1032 A->claim(); 1033 Opts.Config[key] = std::string(val); 1034 } 1035 } 1036 1037 if (Opts.ShouldEmitErrorsOnInvalidConfigValue) 1038 parseAnalyzerConfigs(Opts, &Diags); 1039 else 1040 parseAnalyzerConfigs(Opts, nullptr); 1041 1042 llvm::raw_string_ostream os(Opts.FullCompilerInvocation); 1043 for (unsigned i = 0; i < Args.getNumInputArgStrings(); ++i) { 1044 if (i != 0) 1045 os << " "; 1046 os << Args.getArgString(i); 1047 } 1048 os.flush(); 1049 1050 return Diags.getNumErrors() == NumErrorsBefore; 1051 } 1052 1053 static StringRef getStringOption(AnalyzerOptions::ConfigTable &Config, 1054 StringRef OptionName, StringRef DefaultVal) { 1055 return Config.insert({OptionName, std::string(DefaultVal)}).first->second; 1056 } 1057 1058 static void initOption(AnalyzerOptions::ConfigTable &Config, 1059 DiagnosticsEngine *Diags, 1060 StringRef &OptionField, StringRef Name, 1061 StringRef DefaultVal) { 1062 // String options may be known to invalid (e.g. if the expected string is a 1063 // file name, but the file does not exist), those will have to be checked in 1064 // parseConfigs. 1065 OptionField = getStringOption(Config, Name, DefaultVal); 1066 } 1067 1068 static void initOption(AnalyzerOptions::ConfigTable &Config, 1069 DiagnosticsEngine *Diags, 1070 bool &OptionField, StringRef Name, bool DefaultVal) { 1071 auto PossiblyInvalidVal = llvm::StringSwitch<Optional<bool>>( 1072 getStringOption(Config, Name, (DefaultVal ? "true" : "false"))) 1073 .Case("true", true) 1074 .Case("false", false) 1075 .Default(None); 1076 1077 if (!PossiblyInvalidVal) { 1078 if (Diags) 1079 Diags->Report(diag::err_analyzer_config_invalid_input) 1080 << Name << "a boolean"; 1081 else 1082 OptionField = DefaultVal; 1083 } else 1084 OptionField = PossiblyInvalidVal.getValue(); 1085 } 1086 1087 static void initOption(AnalyzerOptions::ConfigTable &Config, 1088 DiagnosticsEngine *Diags, 1089 unsigned &OptionField, StringRef Name, 1090 unsigned DefaultVal) { 1091 1092 OptionField = DefaultVal; 1093 bool HasFailed = getStringOption(Config, Name, std::to_string(DefaultVal)) 1094 .getAsInteger(0, OptionField); 1095 if (Diags && HasFailed) 1096 Diags->Report(diag::err_analyzer_config_invalid_input) 1097 << Name << "an unsigned"; 1098 } 1099 1100 static void parseAnalyzerConfigs(AnalyzerOptions &AnOpts, 1101 DiagnosticsEngine *Diags) { 1102 // TODO: There's no need to store the entire configtable, it'd be plenty 1103 // enough tostore checker options. 1104 1105 #define ANALYZER_OPTION(TYPE, NAME, CMDFLAG, DESC, DEFAULT_VAL) \ 1106 initOption(AnOpts.Config, Diags, AnOpts.NAME, CMDFLAG, DEFAULT_VAL); 1107 1108 #define ANALYZER_OPTION_DEPENDS_ON_USER_MODE(TYPE, NAME, CMDFLAG, DESC, \ 1109 SHALLOW_VAL, DEEP_VAL) \ 1110 switch (AnOpts.getUserMode()) { \ 1111 case UMK_Shallow: \ 1112 initOption(AnOpts.Config, Diags, AnOpts.NAME, CMDFLAG, SHALLOW_VAL); \ 1113 break; \ 1114 case UMK_Deep: \ 1115 initOption(AnOpts.Config, Diags, AnOpts.NAME, CMDFLAG, DEEP_VAL); \ 1116 break; \ 1117 } \ 1118 1119 #include "clang/StaticAnalyzer/Core/AnalyzerOptions.def" 1120 #undef ANALYZER_OPTION 1121 #undef ANALYZER_OPTION_DEPENDS_ON_USER_MODE 1122 1123 // At this point, AnalyzerOptions is configured. Let's validate some options. 1124 1125 // FIXME: Here we try to validate the silenced checkers or packages are valid. 1126 // The current approach only validates the registered checkers which does not 1127 // contain the runtime enabled checkers and optimally we would validate both. 1128 if (!AnOpts.RawSilencedCheckersAndPackages.empty()) { 1129 std::vector<StringRef> Checkers = 1130 AnOpts.getRegisteredCheckers(/*IncludeExperimental=*/true); 1131 std::vector<StringRef> Packages = 1132 AnOpts.getRegisteredPackages(/*IncludeExperimental=*/true); 1133 1134 SmallVector<StringRef, 16> CheckersAndPackages; 1135 AnOpts.RawSilencedCheckersAndPackages.split(CheckersAndPackages, ";"); 1136 1137 for (const StringRef &CheckerOrPackage : CheckersAndPackages) { 1138 if (Diags) { 1139 bool IsChecker = CheckerOrPackage.contains('.'); 1140 bool IsValidName = IsChecker 1141 ? llvm::is_contained(Checkers, CheckerOrPackage) 1142 : llvm::is_contained(Packages, CheckerOrPackage); 1143 1144 if (!IsValidName) 1145 Diags->Report(diag::err_unknown_analyzer_checker_or_package) 1146 << CheckerOrPackage; 1147 } 1148 1149 AnOpts.SilencedCheckersAndPackages.emplace_back(CheckerOrPackage); 1150 } 1151 } 1152 1153 if (!Diags) 1154 return; 1155 1156 if (AnOpts.ShouldTrackConditionsDebug && !AnOpts.ShouldTrackConditions) 1157 Diags->Report(diag::err_analyzer_config_invalid_input) 1158 << "track-conditions-debug" << "'track-conditions' to also be enabled"; 1159 1160 if (!AnOpts.CTUDir.empty() && !llvm::sys::fs::is_directory(AnOpts.CTUDir)) 1161 Diags->Report(diag::err_analyzer_config_invalid_input) << "ctu-dir" 1162 << "a filename"; 1163 1164 if (!AnOpts.ModelPath.empty() && 1165 !llvm::sys::fs::is_directory(AnOpts.ModelPath)) 1166 Diags->Report(diag::err_analyzer_config_invalid_input) << "model-path" 1167 << "a filename"; 1168 } 1169 1170 /// Generate a remark argument. This is an inverse of `ParseOptimizationRemark`. 1171 static void 1172 GenerateOptimizationRemark(SmallVectorImpl<const char *> &Args, 1173 CompilerInvocation::StringAllocator SA, 1174 OptSpecifier OptEQ, StringRef Name, 1175 const CodeGenOptions::OptRemark &Remark) { 1176 if (Remark.hasValidPattern()) { 1177 GenerateArg(Args, OptEQ, Remark.Pattern, SA); 1178 } else if (Remark.Kind == CodeGenOptions::RK_Enabled) { 1179 GenerateArg(Args, OPT_R_Joined, Name, SA); 1180 } else if (Remark.Kind == CodeGenOptions::RK_Disabled) { 1181 GenerateArg(Args, OPT_R_Joined, StringRef("no-") + Name, SA); 1182 } 1183 } 1184 1185 /// Parse a remark command line argument. It may be missing, disabled/enabled by 1186 /// '-R[no-]group' or specified with a regular expression by '-Rgroup=regexp'. 1187 /// On top of that, it can be disabled/enabled globally by '-R[no-]everything'. 1188 static CodeGenOptions::OptRemark 1189 ParseOptimizationRemark(DiagnosticsEngine &Diags, ArgList &Args, 1190 OptSpecifier OptEQ, StringRef Name) { 1191 CodeGenOptions::OptRemark Result; 1192 1193 auto InitializeResultPattern = [&Diags, &Args, &Result](const Arg *A, 1194 StringRef Pattern) { 1195 Result.Pattern = Pattern.str(); 1196 1197 std::string RegexError; 1198 Result.Regex = std::make_shared<llvm::Regex>(Result.Pattern); 1199 if (!Result.Regex->isValid(RegexError)) { 1200 Diags.Report(diag::err_drv_optimization_remark_pattern) 1201 << RegexError << A->getAsString(Args); 1202 return false; 1203 } 1204 1205 return true; 1206 }; 1207 1208 for (Arg *A : Args) { 1209 if (A->getOption().matches(OPT_R_Joined)) { 1210 StringRef Value = A->getValue(); 1211 1212 if (Value == Name) 1213 Result.Kind = CodeGenOptions::RK_Enabled; 1214 else if (Value == "everything") 1215 Result.Kind = CodeGenOptions::RK_EnabledEverything; 1216 else if (Value.split('-') == std::make_pair(StringRef("no"), Name)) 1217 Result.Kind = CodeGenOptions::RK_Disabled; 1218 else if (Value == "no-everything") 1219 Result.Kind = CodeGenOptions::RK_DisabledEverything; 1220 else 1221 continue; 1222 1223 if (Result.Kind == CodeGenOptions::RK_Disabled || 1224 Result.Kind == CodeGenOptions::RK_DisabledEverything) { 1225 Result.Pattern = ""; 1226 Result.Regex = nullptr; 1227 } else { 1228 InitializeResultPattern(A, ".*"); 1229 } 1230 } else if (A->getOption().matches(OptEQ)) { 1231 Result.Kind = CodeGenOptions::RK_WithPattern; 1232 if (!InitializeResultPattern(A, A->getValue())) 1233 return CodeGenOptions::OptRemark(); 1234 } 1235 } 1236 1237 return Result; 1238 } 1239 1240 static bool parseDiagnosticLevelMask(StringRef FlagName, 1241 const std::vector<std::string> &Levels, 1242 DiagnosticsEngine &Diags, 1243 DiagnosticLevelMask &M) { 1244 bool Success = true; 1245 for (const auto &Level : Levels) { 1246 DiagnosticLevelMask const PM = 1247 llvm::StringSwitch<DiagnosticLevelMask>(Level) 1248 .Case("note", DiagnosticLevelMask::Note) 1249 .Case("remark", DiagnosticLevelMask::Remark) 1250 .Case("warning", DiagnosticLevelMask::Warning) 1251 .Case("error", DiagnosticLevelMask::Error) 1252 .Default(DiagnosticLevelMask::None); 1253 if (PM == DiagnosticLevelMask::None) { 1254 Success = false; 1255 Diags.Report(diag::err_drv_invalid_value) << FlagName << Level; 1256 } 1257 M = M | PM; 1258 } 1259 return Success; 1260 } 1261 1262 static void parseSanitizerKinds(StringRef FlagName, 1263 const std::vector<std::string> &Sanitizers, 1264 DiagnosticsEngine &Diags, SanitizerSet &S) { 1265 for (const auto &Sanitizer : Sanitizers) { 1266 SanitizerMask K = parseSanitizerValue(Sanitizer, /*AllowGroups=*/false); 1267 if (K == SanitizerMask()) 1268 Diags.Report(diag::err_drv_invalid_value) << FlagName << Sanitizer; 1269 else 1270 S.set(K, true); 1271 } 1272 } 1273 1274 static SmallVector<StringRef, 4> serializeSanitizerKinds(SanitizerSet S) { 1275 SmallVector<StringRef, 4> Values; 1276 serializeSanitizerSet(S, Values); 1277 return Values; 1278 } 1279 1280 static void parseXRayInstrumentationBundle(StringRef FlagName, StringRef Bundle, 1281 ArgList &Args, DiagnosticsEngine &D, 1282 XRayInstrSet &S) { 1283 llvm::SmallVector<StringRef, 2> BundleParts; 1284 llvm::SplitString(Bundle, BundleParts, ","); 1285 for (const auto &B : BundleParts) { 1286 auto Mask = parseXRayInstrValue(B); 1287 if (Mask == XRayInstrKind::None) 1288 if (B != "none") 1289 D.Report(diag::err_drv_invalid_value) << FlagName << Bundle; 1290 else 1291 S.Mask = Mask; 1292 else if (Mask == XRayInstrKind::All) 1293 S.Mask = Mask; 1294 else 1295 S.set(Mask, true); 1296 } 1297 } 1298 1299 static std::string serializeXRayInstrumentationBundle(const XRayInstrSet &S) { 1300 llvm::SmallVector<StringRef, 2> BundleParts; 1301 serializeXRayInstrValue(S, BundleParts); 1302 std::string Buffer; 1303 llvm::raw_string_ostream OS(Buffer); 1304 llvm::interleave(BundleParts, OS, [&OS](StringRef Part) { OS << Part; }, ","); 1305 return Buffer; 1306 } 1307 1308 // Set the profile kind using fprofile-instrument-use-path. 1309 static void setPGOUseInstrumentor(CodeGenOptions &Opts, 1310 const Twine &ProfileName) { 1311 auto ReaderOrErr = llvm::IndexedInstrProfReader::create(ProfileName); 1312 // In error, return silently and let Clang PGOUse report the error message. 1313 if (auto E = ReaderOrErr.takeError()) { 1314 llvm::consumeError(std::move(E)); 1315 Opts.setProfileUse(CodeGenOptions::ProfileClangInstr); 1316 return; 1317 } 1318 std::unique_ptr<llvm::IndexedInstrProfReader> PGOReader = 1319 std::move(ReaderOrErr.get()); 1320 if (PGOReader->isIRLevelProfile()) { 1321 if (PGOReader->hasCSIRLevelProfile()) 1322 Opts.setProfileUse(CodeGenOptions::ProfileCSIRInstr); 1323 else 1324 Opts.setProfileUse(CodeGenOptions::ProfileIRInstr); 1325 } else 1326 Opts.setProfileUse(CodeGenOptions::ProfileClangInstr); 1327 } 1328 1329 void CompilerInvocation::GenerateCodeGenArgs( 1330 const CodeGenOptions &Opts, SmallVectorImpl<const char *> &Args, 1331 StringAllocator SA, const llvm::Triple &T, const std::string &OutputFile, 1332 const LangOptions *LangOpts) { 1333 const CodeGenOptions &CodeGenOpts = Opts; 1334 1335 if (Opts.OptimizationLevel == 0) 1336 GenerateArg(Args, OPT_O0, SA); 1337 else 1338 GenerateArg(Args, OPT_O, Twine(Opts.OptimizationLevel), SA); 1339 1340 #define CODEGEN_OPTION_WITH_MARSHALLING( \ 1341 PREFIX_TYPE, NAME, ID, KIND, GROUP, ALIAS, ALIASARGS, FLAGS, PARAM, \ 1342 HELPTEXT, METAVAR, VALUES, SPELLING, SHOULD_PARSE, ALWAYS_EMIT, KEYPATH, \ 1343 DEFAULT_VALUE, IMPLIED_CHECK, IMPLIED_VALUE, NORMALIZER, DENORMALIZER, \ 1344 MERGER, EXTRACTOR, TABLE_INDEX) \ 1345 GENERATE_OPTION_WITH_MARSHALLING( \ 1346 Args, SA, KIND, FLAGS, SPELLING, ALWAYS_EMIT, KEYPATH, DEFAULT_VALUE, \ 1347 IMPLIED_CHECK, IMPLIED_VALUE, DENORMALIZER, EXTRACTOR, TABLE_INDEX) 1348 #include "clang/Driver/Options.inc" 1349 #undef CODEGEN_OPTION_WITH_MARSHALLING 1350 1351 if (Opts.OptimizationLevel > 0) { 1352 if (Opts.Inlining == CodeGenOptions::NormalInlining) 1353 GenerateArg(Args, OPT_finline_functions, SA); 1354 else if (Opts.Inlining == CodeGenOptions::OnlyHintInlining) 1355 GenerateArg(Args, OPT_finline_hint_functions, SA); 1356 else if (Opts.Inlining == CodeGenOptions::OnlyAlwaysInlining) 1357 GenerateArg(Args, OPT_fno_inline, SA); 1358 } 1359 1360 if (Opts.DirectAccessExternalData && LangOpts->PICLevel != 0) 1361 GenerateArg(Args, OPT_fdirect_access_external_data, SA); 1362 else if (!Opts.DirectAccessExternalData && LangOpts->PICLevel == 0) 1363 GenerateArg(Args, OPT_fno_direct_access_external_data, SA); 1364 1365 Optional<StringRef> DebugInfoVal; 1366 switch (Opts.DebugInfo) { 1367 case codegenoptions::DebugLineTablesOnly: 1368 DebugInfoVal = "line-tables-only"; 1369 break; 1370 case codegenoptions::DebugDirectivesOnly: 1371 DebugInfoVal = "line-directives-only"; 1372 break; 1373 case codegenoptions::DebugInfoConstructor: 1374 DebugInfoVal = "constructor"; 1375 break; 1376 case codegenoptions::LimitedDebugInfo: 1377 DebugInfoVal = "limited"; 1378 break; 1379 case codegenoptions::FullDebugInfo: 1380 DebugInfoVal = "standalone"; 1381 break; 1382 case codegenoptions::UnusedTypeInfo: 1383 DebugInfoVal = "unused-types"; 1384 break; 1385 case codegenoptions::NoDebugInfo: // default value 1386 DebugInfoVal = None; 1387 break; 1388 case codegenoptions::LocTrackingOnly: // implied value 1389 DebugInfoVal = None; 1390 break; 1391 } 1392 if (DebugInfoVal) 1393 GenerateArg(Args, OPT_debug_info_kind_EQ, *DebugInfoVal, SA); 1394 1395 for (const auto &Prefix : Opts.DebugPrefixMap) 1396 GenerateArg(Args, OPT_fdebug_prefix_map_EQ, 1397 Prefix.first + "=" + Prefix.second, SA); 1398 1399 for (const auto &Prefix : Opts.CoveragePrefixMap) 1400 GenerateArg(Args, OPT_fcoverage_prefix_map_EQ, 1401 Prefix.first + "=" + Prefix.second, SA); 1402 1403 if (Opts.NewStructPathTBAA) 1404 GenerateArg(Args, OPT_new_struct_path_tbaa, SA); 1405 1406 if (Opts.OptimizeSize == 1) 1407 GenerateArg(Args, OPT_O, "s", SA); 1408 else if (Opts.OptimizeSize == 2) 1409 GenerateArg(Args, OPT_O, "z", SA); 1410 1411 // SimplifyLibCalls is set only in the absence of -fno-builtin and 1412 // -ffreestanding. We'll consider that when generating them. 1413 1414 // NoBuiltinFuncs are generated by LangOptions. 1415 1416 if (Opts.UnrollLoops && Opts.OptimizationLevel <= 1) 1417 GenerateArg(Args, OPT_funroll_loops, SA); 1418 else if (!Opts.UnrollLoops && Opts.OptimizationLevel > 1) 1419 GenerateArg(Args, OPT_fno_unroll_loops, SA); 1420 1421 if (!Opts.BinutilsVersion.empty()) 1422 GenerateArg(Args, OPT_fbinutils_version_EQ, Opts.BinutilsVersion, SA); 1423 1424 if (Opts.DebugNameTable == 1425 static_cast<unsigned>(llvm::DICompileUnit::DebugNameTableKind::GNU)) 1426 GenerateArg(Args, OPT_ggnu_pubnames, SA); 1427 else if (Opts.DebugNameTable == 1428 static_cast<unsigned>( 1429 llvm::DICompileUnit::DebugNameTableKind::Default)) 1430 GenerateArg(Args, OPT_gpubnames, SA); 1431 1432 auto TNK = Opts.getDebugSimpleTemplateNames(); 1433 if (TNK != codegenoptions::DebugTemplateNamesKind::Full) { 1434 if (TNK == codegenoptions::DebugTemplateNamesKind::Simple) 1435 GenerateArg(Args, OPT_gsimple_template_names_EQ, "simple", SA); 1436 else if (TNK == codegenoptions::DebugTemplateNamesKind::Mangled) 1437 GenerateArg(Args, OPT_gsimple_template_names_EQ, "mangled", SA); 1438 } 1439 // ProfileInstrumentUsePath is marshalled automatically, no need to generate 1440 // it or PGOUseInstrumentor. 1441 1442 if (Opts.TimePasses) { 1443 if (Opts.TimePassesPerRun) 1444 GenerateArg(Args, OPT_ftime_report_EQ, "per-pass-run", SA); 1445 else 1446 GenerateArg(Args, OPT_ftime_report, SA); 1447 } 1448 1449 if (Opts.PrepareForLTO && !Opts.PrepareForThinLTO) 1450 GenerateArg(Args, OPT_flto_EQ, "full", SA); 1451 1452 if (Opts.PrepareForThinLTO) 1453 GenerateArg(Args, OPT_flto_EQ, "thin", SA); 1454 1455 if (!Opts.ThinLTOIndexFile.empty()) 1456 GenerateArg(Args, OPT_fthinlto_index_EQ, Opts.ThinLTOIndexFile, SA); 1457 1458 if (Opts.SaveTempsFilePrefix == OutputFile) 1459 GenerateArg(Args, OPT_save_temps_EQ, "obj", SA); 1460 1461 StringRef MemProfileBasename("memprof.profraw"); 1462 if (!Opts.MemoryProfileOutput.empty()) { 1463 if (Opts.MemoryProfileOutput == MemProfileBasename) { 1464 GenerateArg(Args, OPT_fmemory_profile, SA); 1465 } else { 1466 size_t ArgLength = 1467 Opts.MemoryProfileOutput.size() - MemProfileBasename.size(); 1468 GenerateArg(Args, OPT_fmemory_profile_EQ, 1469 Opts.MemoryProfileOutput.substr(0, ArgLength), SA); 1470 } 1471 } 1472 1473 if (memcmp(Opts.CoverageVersion, "408*", 4) != 0) 1474 GenerateArg(Args, OPT_coverage_version_EQ, 1475 StringRef(Opts.CoverageVersion, 4), SA); 1476 1477 // TODO: Check if we need to generate arguments stored in CmdArgs. (Namely 1478 // '-fembed_bitcode', which does not map to any CompilerInvocation field and 1479 // won't be generated.) 1480 1481 if (Opts.XRayInstrumentationBundle.Mask != XRayInstrKind::All) { 1482 std::string InstrBundle = 1483 serializeXRayInstrumentationBundle(Opts.XRayInstrumentationBundle); 1484 if (!InstrBundle.empty()) 1485 GenerateArg(Args, OPT_fxray_instrumentation_bundle, InstrBundle, SA); 1486 } 1487 1488 if (Opts.CFProtectionReturn && Opts.CFProtectionBranch) 1489 GenerateArg(Args, OPT_fcf_protection_EQ, "full", SA); 1490 else if (Opts.CFProtectionReturn) 1491 GenerateArg(Args, OPT_fcf_protection_EQ, "return", SA); 1492 else if (Opts.CFProtectionBranch) 1493 GenerateArg(Args, OPT_fcf_protection_EQ, "branch", SA); 1494 1495 for (const auto &F : Opts.LinkBitcodeFiles) { 1496 bool Builtint = F.LinkFlags == llvm::Linker::Flags::LinkOnlyNeeded && 1497 F.PropagateAttrs && F.Internalize; 1498 GenerateArg(Args, 1499 Builtint ? OPT_mlink_builtin_bitcode : OPT_mlink_bitcode_file, 1500 F.Filename, SA); 1501 } 1502 1503 // TODO: Consider removing marshalling annotations from f[no_]emulated_tls. 1504 // That would make it easy to generate the option only **once** if it was 1505 // explicitly set to non-default value. 1506 if (Opts.ExplicitEmulatedTLS) { 1507 GenerateArg( 1508 Args, Opts.EmulatedTLS ? OPT_femulated_tls : OPT_fno_emulated_tls, SA); 1509 } 1510 1511 if (Opts.FPDenormalMode != llvm::DenormalMode::getIEEE()) 1512 GenerateArg(Args, OPT_fdenormal_fp_math_EQ, Opts.FPDenormalMode.str(), SA); 1513 1514 if (Opts.FP32DenormalMode != llvm::DenormalMode::getIEEE()) 1515 GenerateArg(Args, OPT_fdenormal_fp_math_f32_EQ, Opts.FP32DenormalMode.str(), 1516 SA); 1517 1518 if (Opts.StructReturnConvention == CodeGenOptions::SRCK_OnStack) { 1519 OptSpecifier Opt = 1520 T.isPPC32() ? OPT_maix_struct_return : OPT_fpcc_struct_return; 1521 GenerateArg(Args, Opt, SA); 1522 } else if (Opts.StructReturnConvention == CodeGenOptions::SRCK_InRegs) { 1523 OptSpecifier Opt = 1524 T.isPPC32() ? OPT_msvr4_struct_return : OPT_freg_struct_return; 1525 GenerateArg(Args, Opt, SA); 1526 } 1527 1528 if (Opts.EnableAIXExtendedAltivecABI) 1529 GenerateArg(Args, OPT_mabi_EQ_vec_extabi, SA); 1530 1531 if (!Opts.OptRecordPasses.empty()) 1532 GenerateArg(Args, OPT_opt_record_passes, Opts.OptRecordPasses, SA); 1533 1534 if (!Opts.OptRecordFormat.empty()) 1535 GenerateArg(Args, OPT_opt_record_format, Opts.OptRecordFormat, SA); 1536 1537 GenerateOptimizationRemark(Args, SA, OPT_Rpass_EQ, "pass", 1538 Opts.OptimizationRemark); 1539 1540 GenerateOptimizationRemark(Args, SA, OPT_Rpass_missed_EQ, "pass-missed", 1541 Opts.OptimizationRemarkMissed); 1542 1543 GenerateOptimizationRemark(Args, SA, OPT_Rpass_analysis_EQ, "pass-analysis", 1544 Opts.OptimizationRemarkAnalysis); 1545 1546 GenerateArg(Args, OPT_fdiagnostics_hotness_threshold_EQ, 1547 Opts.DiagnosticsHotnessThreshold 1548 ? Twine(*Opts.DiagnosticsHotnessThreshold) 1549 : "auto", 1550 SA); 1551 1552 for (StringRef Sanitizer : serializeSanitizerKinds(Opts.SanitizeRecover)) 1553 GenerateArg(Args, OPT_fsanitize_recover_EQ, Sanitizer, SA); 1554 1555 for (StringRef Sanitizer : serializeSanitizerKinds(Opts.SanitizeTrap)) 1556 GenerateArg(Args, OPT_fsanitize_trap_EQ, Sanitizer, SA); 1557 1558 if (!Opts.EmitVersionIdentMetadata) 1559 GenerateArg(Args, OPT_Qn, SA); 1560 1561 switch (Opts.FiniteLoops) { 1562 case CodeGenOptions::FiniteLoopsKind::Language: 1563 break; 1564 case CodeGenOptions::FiniteLoopsKind::Always: 1565 GenerateArg(Args, OPT_ffinite_loops, SA); 1566 break; 1567 case CodeGenOptions::FiniteLoopsKind::Never: 1568 GenerateArg(Args, OPT_fno_finite_loops, SA); 1569 break; 1570 } 1571 } 1572 1573 bool CompilerInvocation::ParseCodeGenArgs(CodeGenOptions &Opts, ArgList &Args, 1574 InputKind IK, 1575 DiagnosticsEngine &Diags, 1576 const llvm::Triple &T, 1577 const std::string &OutputFile, 1578 const LangOptions &LangOptsRef) { 1579 unsigned NumErrorsBefore = Diags.getNumErrors(); 1580 1581 unsigned OptimizationLevel = getOptimizationLevel(Args, IK, Diags); 1582 // TODO: This could be done in Driver 1583 unsigned MaxOptLevel = 3; 1584 if (OptimizationLevel > MaxOptLevel) { 1585 // If the optimization level is not supported, fall back on the default 1586 // optimization 1587 Diags.Report(diag::warn_drv_optimization_value) 1588 << Args.getLastArg(OPT_O)->getAsString(Args) << "-O" << MaxOptLevel; 1589 OptimizationLevel = MaxOptLevel; 1590 } 1591 Opts.OptimizationLevel = OptimizationLevel; 1592 1593 // The key paths of codegen options defined in Options.td start with 1594 // "CodeGenOpts.". Let's provide the expected variable name and type. 1595 CodeGenOptions &CodeGenOpts = Opts; 1596 // Some codegen options depend on language options. Let's provide the expected 1597 // variable name and type. 1598 const LangOptions *LangOpts = &LangOptsRef; 1599 1600 #define CODEGEN_OPTION_WITH_MARSHALLING( \ 1601 PREFIX_TYPE, NAME, ID, KIND, GROUP, ALIAS, ALIASARGS, FLAGS, PARAM, \ 1602 HELPTEXT, METAVAR, VALUES, SPELLING, SHOULD_PARSE, ALWAYS_EMIT, KEYPATH, \ 1603 DEFAULT_VALUE, IMPLIED_CHECK, IMPLIED_VALUE, NORMALIZER, DENORMALIZER, \ 1604 MERGER, EXTRACTOR, TABLE_INDEX) \ 1605 PARSE_OPTION_WITH_MARSHALLING( \ 1606 Args, Diags, ID, FLAGS, PARAM, SHOULD_PARSE, KEYPATH, DEFAULT_VALUE, \ 1607 IMPLIED_CHECK, IMPLIED_VALUE, NORMALIZER, MERGER, TABLE_INDEX) 1608 #include "clang/Driver/Options.inc" 1609 #undef CODEGEN_OPTION_WITH_MARSHALLING 1610 1611 // At O0 we want to fully disable inlining outside of cases marked with 1612 // 'alwaysinline' that are required for correctness. 1613 Opts.setInlining((Opts.OptimizationLevel == 0) 1614 ? CodeGenOptions::OnlyAlwaysInlining 1615 : CodeGenOptions::NormalInlining); 1616 // Explicit inlining flags can disable some or all inlining even at 1617 // optimization levels above zero. 1618 if (Arg *InlineArg = Args.getLastArg( 1619 options::OPT_finline_functions, options::OPT_finline_hint_functions, 1620 options::OPT_fno_inline_functions, options::OPT_fno_inline)) { 1621 if (Opts.OptimizationLevel > 0) { 1622 const Option &InlineOpt = InlineArg->getOption(); 1623 if (InlineOpt.matches(options::OPT_finline_functions)) 1624 Opts.setInlining(CodeGenOptions::NormalInlining); 1625 else if (InlineOpt.matches(options::OPT_finline_hint_functions)) 1626 Opts.setInlining(CodeGenOptions::OnlyHintInlining); 1627 else 1628 Opts.setInlining(CodeGenOptions::OnlyAlwaysInlining); 1629 } 1630 } 1631 1632 // PIC defaults to -fno-direct-access-external-data while non-PIC defaults to 1633 // -fdirect-access-external-data. 1634 Opts.DirectAccessExternalData = 1635 Args.hasArg(OPT_fdirect_access_external_data) || 1636 (!Args.hasArg(OPT_fno_direct_access_external_data) && 1637 LangOpts->PICLevel == 0); 1638 1639 if (Arg *A = Args.getLastArg(OPT_debug_info_kind_EQ)) { 1640 unsigned Val = 1641 llvm::StringSwitch<unsigned>(A->getValue()) 1642 .Case("line-tables-only", codegenoptions::DebugLineTablesOnly) 1643 .Case("line-directives-only", codegenoptions::DebugDirectivesOnly) 1644 .Case("constructor", codegenoptions::DebugInfoConstructor) 1645 .Case("limited", codegenoptions::LimitedDebugInfo) 1646 .Case("standalone", codegenoptions::FullDebugInfo) 1647 .Case("unused-types", codegenoptions::UnusedTypeInfo) 1648 .Default(~0U); 1649 if (Val == ~0U) 1650 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) 1651 << A->getValue(); 1652 else 1653 Opts.setDebugInfo(static_cast<codegenoptions::DebugInfoKind>(Val)); 1654 } 1655 1656 // If -fuse-ctor-homing is set and limited debug info is already on, then use 1657 // constructor homing, and vice versa for -fno-use-ctor-homing. 1658 if (const Arg *A = 1659 Args.getLastArg(OPT_fuse_ctor_homing, OPT_fno_use_ctor_homing)) { 1660 if (A->getOption().matches(OPT_fuse_ctor_homing) && 1661 Opts.getDebugInfo() == codegenoptions::LimitedDebugInfo) 1662 Opts.setDebugInfo(codegenoptions::DebugInfoConstructor); 1663 if (A->getOption().matches(OPT_fno_use_ctor_homing) && 1664 Opts.getDebugInfo() == codegenoptions::DebugInfoConstructor) 1665 Opts.setDebugInfo(codegenoptions::LimitedDebugInfo); 1666 } 1667 1668 for (const auto &Arg : Args.getAllArgValues(OPT_fdebug_prefix_map_EQ)) { 1669 auto Split = StringRef(Arg).split('='); 1670 Opts.DebugPrefixMap.insert( 1671 {std::string(Split.first), std::string(Split.second)}); 1672 } 1673 1674 for (const auto &Arg : Args.getAllArgValues(OPT_fcoverage_prefix_map_EQ)) { 1675 auto Split = StringRef(Arg).split('='); 1676 Opts.CoveragePrefixMap.insert( 1677 {std::string(Split.first), std::string(Split.second)}); 1678 } 1679 1680 const llvm::Triple::ArchType DebugEntryValueArchs[] = { 1681 llvm::Triple::x86, llvm::Triple::x86_64, llvm::Triple::aarch64, 1682 llvm::Triple::arm, llvm::Triple::armeb, llvm::Triple::mips, 1683 llvm::Triple::mipsel, llvm::Triple::mips64, llvm::Triple::mips64el}; 1684 1685 if (Opts.OptimizationLevel > 0 && Opts.hasReducedDebugInfo() && 1686 llvm::is_contained(DebugEntryValueArchs, T.getArch())) 1687 Opts.EmitCallSiteInfo = true; 1688 1689 if (!Opts.EnableDIPreservationVerify && Opts.DIBugsReportFilePath.size()) { 1690 Diags.Report(diag::warn_ignoring_verify_debuginfo_preserve_export) 1691 << Opts.DIBugsReportFilePath; 1692 Opts.DIBugsReportFilePath = ""; 1693 } 1694 1695 Opts.NewStructPathTBAA = !Args.hasArg(OPT_no_struct_path_tbaa) && 1696 Args.hasArg(OPT_new_struct_path_tbaa); 1697 Opts.OptimizeSize = getOptimizationLevelSize(Args); 1698 Opts.SimplifyLibCalls = !LangOpts->NoBuiltin; 1699 if (Opts.SimplifyLibCalls) 1700 Opts.NoBuiltinFuncs = LangOpts->NoBuiltinFuncs; 1701 Opts.UnrollLoops = 1702 Args.hasFlag(OPT_funroll_loops, OPT_fno_unroll_loops, 1703 (Opts.OptimizationLevel > 1)); 1704 Opts.BinutilsVersion = 1705 std::string(Args.getLastArgValue(OPT_fbinutils_version_EQ)); 1706 1707 Opts.DebugNameTable = static_cast<unsigned>( 1708 Args.hasArg(OPT_ggnu_pubnames) 1709 ? llvm::DICompileUnit::DebugNameTableKind::GNU 1710 : Args.hasArg(OPT_gpubnames) 1711 ? llvm::DICompileUnit::DebugNameTableKind::Default 1712 : llvm::DICompileUnit::DebugNameTableKind::None); 1713 if (const Arg *A = Args.getLastArg(OPT_gsimple_template_names_EQ)) { 1714 StringRef Value = A->getValue(); 1715 if (Value != "simple" && Value != "mangled") 1716 Diags.Report(diag::err_drv_unsupported_option_argument) 1717 << A->getOption().getName() << A->getValue(); 1718 Opts.setDebugSimpleTemplateNames( 1719 StringRef(A->getValue()) == "simple" 1720 ? codegenoptions::DebugTemplateNamesKind::Simple 1721 : codegenoptions::DebugTemplateNamesKind::Mangled); 1722 } 1723 1724 if (!Opts.ProfileInstrumentUsePath.empty()) 1725 setPGOUseInstrumentor(Opts, Opts.ProfileInstrumentUsePath); 1726 1727 if (const Arg *A = Args.getLastArg(OPT_ftime_report, OPT_ftime_report_EQ)) { 1728 Opts.TimePasses = true; 1729 1730 // -ftime-report= is only for new pass manager. 1731 if (A->getOption().getID() == OPT_ftime_report_EQ) { 1732 if (Opts.LegacyPassManager) 1733 Diags.Report(diag::err_drv_argument_only_allowed_with) 1734 << A->getAsString(Args) << "-fno-legacy-pass-manager"; 1735 1736 StringRef Val = A->getValue(); 1737 if (Val == "per-pass") 1738 Opts.TimePassesPerRun = false; 1739 else if (Val == "per-pass-run") 1740 Opts.TimePassesPerRun = true; 1741 else 1742 Diags.Report(diag::err_drv_invalid_value) 1743 << A->getAsString(Args) << A->getValue(); 1744 } 1745 } 1746 1747 Opts.PrepareForLTO = false; 1748 Opts.PrepareForThinLTO = false; 1749 if (Arg *A = Args.getLastArg(OPT_flto_EQ)) { 1750 Opts.PrepareForLTO = true; 1751 StringRef S = A->getValue(); 1752 if (S == "thin") 1753 Opts.PrepareForThinLTO = true; 1754 else if (S != "full") 1755 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << S; 1756 } 1757 if (Arg *A = Args.getLastArg(OPT_fthinlto_index_EQ)) { 1758 if (IK.getLanguage() != Language::LLVM_IR) 1759 Diags.Report(diag::err_drv_argument_only_allowed_with) 1760 << A->getAsString(Args) << "-x ir"; 1761 Opts.ThinLTOIndexFile = 1762 std::string(Args.getLastArgValue(OPT_fthinlto_index_EQ)); 1763 } 1764 if (Arg *A = Args.getLastArg(OPT_save_temps_EQ)) 1765 Opts.SaveTempsFilePrefix = 1766 llvm::StringSwitch<std::string>(A->getValue()) 1767 .Case("obj", OutputFile) 1768 .Default(llvm::sys::path::filename(OutputFile).str()); 1769 1770 // The memory profile runtime appends the pid to make this name more unique. 1771 const char *MemProfileBasename = "memprof.profraw"; 1772 if (Args.hasArg(OPT_fmemory_profile_EQ)) { 1773 SmallString<128> Path( 1774 std::string(Args.getLastArgValue(OPT_fmemory_profile_EQ))); 1775 llvm::sys::path::append(Path, MemProfileBasename); 1776 Opts.MemoryProfileOutput = std::string(Path); 1777 } else if (Args.hasArg(OPT_fmemory_profile)) 1778 Opts.MemoryProfileOutput = MemProfileBasename; 1779 1780 memcpy(Opts.CoverageVersion, "408*", 4); 1781 if (Opts.EmitGcovArcs || Opts.EmitGcovNotes) { 1782 if (Args.hasArg(OPT_coverage_version_EQ)) { 1783 StringRef CoverageVersion = Args.getLastArgValue(OPT_coverage_version_EQ); 1784 if (CoverageVersion.size() != 4) { 1785 Diags.Report(diag::err_drv_invalid_value) 1786 << Args.getLastArg(OPT_coverage_version_EQ)->getAsString(Args) 1787 << CoverageVersion; 1788 } else { 1789 memcpy(Opts.CoverageVersion, CoverageVersion.data(), 4); 1790 } 1791 } 1792 } 1793 // FIXME: For backend options that are not yet recorded as function 1794 // attributes in the IR, keep track of them so we can embed them in a 1795 // separate data section and use them when building the bitcode. 1796 for (const auto &A : Args) { 1797 // Do not encode output and input. 1798 if (A->getOption().getID() == options::OPT_o || 1799 A->getOption().getID() == options::OPT_INPUT || 1800 A->getOption().getID() == options::OPT_x || 1801 A->getOption().getID() == options::OPT_fembed_bitcode || 1802 A->getOption().matches(options::OPT_W_Group)) 1803 continue; 1804 ArgStringList ASL; 1805 A->render(Args, ASL); 1806 for (const auto &arg : ASL) { 1807 StringRef ArgStr(arg); 1808 Opts.CmdArgs.insert(Opts.CmdArgs.end(), ArgStr.begin(), ArgStr.end()); 1809 // using \00 to separate each commandline options. 1810 Opts.CmdArgs.push_back('\0'); 1811 } 1812 } 1813 1814 auto XRayInstrBundles = 1815 Args.getAllArgValues(OPT_fxray_instrumentation_bundle); 1816 if (XRayInstrBundles.empty()) 1817 Opts.XRayInstrumentationBundle.Mask = XRayInstrKind::All; 1818 else 1819 for (const auto &A : XRayInstrBundles) 1820 parseXRayInstrumentationBundle("-fxray-instrumentation-bundle=", A, Args, 1821 Diags, Opts.XRayInstrumentationBundle); 1822 1823 if (const Arg *A = Args.getLastArg(OPT_fcf_protection_EQ)) { 1824 StringRef Name = A->getValue(); 1825 if (Name == "full") { 1826 Opts.CFProtectionReturn = 1; 1827 Opts.CFProtectionBranch = 1; 1828 } else if (Name == "return") 1829 Opts.CFProtectionReturn = 1; 1830 else if (Name == "branch") 1831 Opts.CFProtectionBranch = 1; 1832 else if (Name != "none") 1833 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Name; 1834 } 1835 1836 if (Opts.PrepareForLTO && Args.hasArg(OPT_mibt_seal)) 1837 Opts.IBTSeal = 1; 1838 1839 for (auto *A : 1840 Args.filtered(OPT_mlink_bitcode_file, OPT_mlink_builtin_bitcode)) { 1841 CodeGenOptions::BitcodeFileToLink F; 1842 F.Filename = A->getValue(); 1843 if (A->getOption().matches(OPT_mlink_builtin_bitcode)) { 1844 F.LinkFlags = llvm::Linker::Flags::LinkOnlyNeeded; 1845 // When linking CUDA bitcode, propagate function attributes so that 1846 // e.g. libdevice gets fast-math attrs if we're building with fast-math. 1847 F.PropagateAttrs = true; 1848 F.Internalize = true; 1849 } 1850 Opts.LinkBitcodeFiles.push_back(F); 1851 } 1852 1853 if (Args.getLastArg(OPT_femulated_tls) || 1854 Args.getLastArg(OPT_fno_emulated_tls)) { 1855 Opts.ExplicitEmulatedTLS = true; 1856 } 1857 1858 if (Arg *A = Args.getLastArg(OPT_ftlsmodel_EQ)) { 1859 if (T.isOSAIX()) { 1860 StringRef Name = A->getValue(); 1861 if (Name != "global-dynamic") 1862 Diags.Report(diag::err_aix_unsupported_tls_model) << Name; 1863 } 1864 } 1865 1866 if (Arg *A = Args.getLastArg(OPT_fdenormal_fp_math_EQ)) { 1867 StringRef Val = A->getValue(); 1868 Opts.FPDenormalMode = llvm::parseDenormalFPAttribute(Val); 1869 if (!Opts.FPDenormalMode.isValid()) 1870 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Val; 1871 } 1872 1873 if (Arg *A = Args.getLastArg(OPT_fdenormal_fp_math_f32_EQ)) { 1874 StringRef Val = A->getValue(); 1875 Opts.FP32DenormalMode = llvm::parseDenormalFPAttribute(Val); 1876 if (!Opts.FP32DenormalMode.isValid()) 1877 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Val; 1878 } 1879 1880 // X86_32 has -fppc-struct-return and -freg-struct-return. 1881 // PPC32 has -maix-struct-return and -msvr4-struct-return. 1882 if (Arg *A = 1883 Args.getLastArg(OPT_fpcc_struct_return, OPT_freg_struct_return, 1884 OPT_maix_struct_return, OPT_msvr4_struct_return)) { 1885 // TODO: We might want to consider enabling these options on AIX in the 1886 // future. 1887 if (T.isOSAIX()) 1888 Diags.Report(diag::err_drv_unsupported_opt_for_target) 1889 << A->getSpelling() << T.str(); 1890 1891 const Option &O = A->getOption(); 1892 if (O.matches(OPT_fpcc_struct_return) || 1893 O.matches(OPT_maix_struct_return)) { 1894 Opts.setStructReturnConvention(CodeGenOptions::SRCK_OnStack); 1895 } else { 1896 assert(O.matches(OPT_freg_struct_return) || 1897 O.matches(OPT_msvr4_struct_return)); 1898 Opts.setStructReturnConvention(CodeGenOptions::SRCK_InRegs); 1899 } 1900 } 1901 1902 if (Arg *A = 1903 Args.getLastArg(OPT_mabi_EQ_vec_default, OPT_mabi_EQ_vec_extabi)) { 1904 if (!T.isOSAIX()) 1905 Diags.Report(diag::err_drv_unsupported_opt_for_target) 1906 << A->getSpelling() << T.str(); 1907 1908 const Option &O = A->getOption(); 1909 Opts.EnableAIXExtendedAltivecABI = O.matches(OPT_mabi_EQ_vec_extabi); 1910 } 1911 1912 bool NeedLocTracking = false; 1913 1914 if (!Opts.OptRecordFile.empty()) 1915 NeedLocTracking = true; 1916 1917 if (Arg *A = Args.getLastArg(OPT_opt_record_passes)) { 1918 Opts.OptRecordPasses = A->getValue(); 1919 NeedLocTracking = true; 1920 } 1921 1922 if (Arg *A = Args.getLastArg(OPT_opt_record_format)) { 1923 Opts.OptRecordFormat = A->getValue(); 1924 NeedLocTracking = true; 1925 } 1926 1927 Opts.OptimizationRemark = 1928 ParseOptimizationRemark(Diags, Args, OPT_Rpass_EQ, "pass"); 1929 1930 Opts.OptimizationRemarkMissed = 1931 ParseOptimizationRemark(Diags, Args, OPT_Rpass_missed_EQ, "pass-missed"); 1932 1933 Opts.OptimizationRemarkAnalysis = ParseOptimizationRemark( 1934 Diags, Args, OPT_Rpass_analysis_EQ, "pass-analysis"); 1935 1936 NeedLocTracking |= Opts.OptimizationRemark.hasValidPattern() || 1937 Opts.OptimizationRemarkMissed.hasValidPattern() || 1938 Opts.OptimizationRemarkAnalysis.hasValidPattern(); 1939 1940 bool UsingSampleProfile = !Opts.SampleProfileFile.empty(); 1941 bool UsingProfile = UsingSampleProfile || 1942 (Opts.getProfileUse() != CodeGenOptions::ProfileNone); 1943 1944 if (Opts.DiagnosticsWithHotness && !UsingProfile && 1945 // An IR file will contain PGO as metadata 1946 IK.getLanguage() != Language::LLVM_IR) 1947 Diags.Report(diag::warn_drv_diagnostics_hotness_requires_pgo) 1948 << "-fdiagnostics-show-hotness"; 1949 1950 // Parse remarks hotness threshold. Valid value is either integer or 'auto'. 1951 if (auto *arg = 1952 Args.getLastArg(options::OPT_fdiagnostics_hotness_threshold_EQ)) { 1953 auto ResultOrErr = 1954 llvm::remarks::parseHotnessThresholdOption(arg->getValue()); 1955 1956 if (!ResultOrErr) { 1957 Diags.Report(diag::err_drv_invalid_diagnotics_hotness_threshold) 1958 << "-fdiagnostics-hotness-threshold="; 1959 } else { 1960 Opts.DiagnosticsHotnessThreshold = *ResultOrErr; 1961 if ((!Opts.DiagnosticsHotnessThreshold.hasValue() || 1962 Opts.DiagnosticsHotnessThreshold.getValue() > 0) && 1963 !UsingProfile) 1964 Diags.Report(diag::warn_drv_diagnostics_hotness_requires_pgo) 1965 << "-fdiagnostics-hotness-threshold="; 1966 } 1967 } 1968 1969 if (auto *arg = 1970 Args.getLastArg(options::OPT_fdiagnostics_misexpect_tolerance_EQ)) { 1971 auto ResultOrErr = parseToleranceOption(arg->getValue()); 1972 1973 if (!ResultOrErr) { 1974 Diags.Report(diag::err_drv_invalid_diagnotics_misexpect_tolerance) 1975 << "-fdiagnostics-misexpect-tolerance="; 1976 } else { 1977 Opts.DiagnosticsMisExpectTolerance = *ResultOrErr; 1978 if (!UsingProfile) 1979 Diags.Report(diag::warn_drv_diagnostics_misexpect_requires_pgo) 1980 << "-fdiagnostics-misexpect-tolerance="; 1981 } 1982 } 1983 1984 // If the user requested to use a sample profile for PGO, then the 1985 // backend will need to track source location information so the profile 1986 // can be incorporated into the IR. 1987 if (UsingSampleProfile) 1988 NeedLocTracking = true; 1989 1990 if (!Opts.StackUsageOutput.empty()) 1991 NeedLocTracking = true; 1992 1993 // If the user requested a flag that requires source locations available in 1994 // the backend, make sure that the backend tracks source location information. 1995 if (NeedLocTracking && Opts.getDebugInfo() == codegenoptions::NoDebugInfo) 1996 Opts.setDebugInfo(codegenoptions::LocTrackingOnly); 1997 1998 // Parse -fsanitize-recover= arguments. 1999 // FIXME: Report unrecoverable sanitizers incorrectly specified here. 2000 parseSanitizerKinds("-fsanitize-recover=", 2001 Args.getAllArgValues(OPT_fsanitize_recover_EQ), Diags, 2002 Opts.SanitizeRecover); 2003 parseSanitizerKinds("-fsanitize-trap=", 2004 Args.getAllArgValues(OPT_fsanitize_trap_EQ), Diags, 2005 Opts.SanitizeTrap); 2006 2007 Opts.EmitVersionIdentMetadata = Args.hasFlag(OPT_Qy, OPT_Qn, true); 2008 2009 if (Args.hasArg(options::OPT_ffinite_loops)) 2010 Opts.FiniteLoops = CodeGenOptions::FiniteLoopsKind::Always; 2011 else if (Args.hasArg(options::OPT_fno_finite_loops)) 2012 Opts.FiniteLoops = CodeGenOptions::FiniteLoopsKind::Never; 2013 2014 Opts.EmitIEEENaNCompliantInsts = 2015 Args.hasFlag(options::OPT_mamdgpu_ieee, options::OPT_mno_amdgpu_ieee); 2016 if (!Opts.EmitIEEENaNCompliantInsts && !LangOptsRef.NoHonorNaNs) 2017 Diags.Report(diag::err_drv_amdgpu_ieee_without_no_honor_nans); 2018 2019 return Diags.getNumErrors() == NumErrorsBefore; 2020 } 2021 2022 static void 2023 GenerateDependencyOutputArgs(const DependencyOutputOptions &Opts, 2024 SmallVectorImpl<const char *> &Args, 2025 CompilerInvocation::StringAllocator SA) { 2026 const DependencyOutputOptions &DependencyOutputOpts = Opts; 2027 #define DEPENDENCY_OUTPUT_OPTION_WITH_MARSHALLING( \ 2028 PREFIX_TYPE, NAME, ID, KIND, GROUP, ALIAS, ALIASARGS, FLAGS, PARAM, \ 2029 HELPTEXT, METAVAR, VALUES, SPELLING, SHOULD_PARSE, ALWAYS_EMIT, KEYPATH, \ 2030 DEFAULT_VALUE, IMPLIED_CHECK, IMPLIED_VALUE, NORMALIZER, DENORMALIZER, \ 2031 MERGER, EXTRACTOR, TABLE_INDEX) \ 2032 GENERATE_OPTION_WITH_MARSHALLING( \ 2033 Args, SA, KIND, FLAGS, SPELLING, ALWAYS_EMIT, KEYPATH, DEFAULT_VALUE, \ 2034 IMPLIED_CHECK, IMPLIED_VALUE, DENORMALIZER, EXTRACTOR, TABLE_INDEX) 2035 #include "clang/Driver/Options.inc" 2036 #undef DEPENDENCY_OUTPUT_OPTION_WITH_MARSHALLING 2037 2038 if (Opts.ShowIncludesDest != ShowIncludesDestination::None) 2039 GenerateArg(Args, OPT_show_includes, SA); 2040 2041 for (const auto &Dep : Opts.ExtraDeps) { 2042 switch (Dep.second) { 2043 case EDK_SanitizeIgnorelist: 2044 // Sanitizer ignorelist arguments are generated from LanguageOptions. 2045 continue; 2046 case EDK_ModuleFile: 2047 // Module file arguments are generated from FrontendOptions and 2048 // HeaderSearchOptions. 2049 continue; 2050 case EDK_ProfileList: 2051 // Profile list arguments are generated from LanguageOptions via the 2052 // marshalling infrastructure. 2053 continue; 2054 case EDK_DepFileEntry: 2055 GenerateArg(Args, OPT_fdepfile_entry, Dep.first, SA); 2056 break; 2057 } 2058 } 2059 } 2060 2061 static bool ParseDependencyOutputArgs(DependencyOutputOptions &Opts, 2062 ArgList &Args, DiagnosticsEngine &Diags, 2063 frontend::ActionKind Action, 2064 bool ShowLineMarkers) { 2065 unsigned NumErrorsBefore = Diags.getNumErrors(); 2066 2067 DependencyOutputOptions &DependencyOutputOpts = Opts; 2068 #define DEPENDENCY_OUTPUT_OPTION_WITH_MARSHALLING( \ 2069 PREFIX_TYPE, NAME, ID, KIND, GROUP, ALIAS, ALIASARGS, FLAGS, PARAM, \ 2070 HELPTEXT, METAVAR, VALUES, SPELLING, SHOULD_PARSE, ALWAYS_EMIT, KEYPATH, \ 2071 DEFAULT_VALUE, IMPLIED_CHECK, IMPLIED_VALUE, NORMALIZER, DENORMALIZER, \ 2072 MERGER, EXTRACTOR, TABLE_INDEX) \ 2073 PARSE_OPTION_WITH_MARSHALLING( \ 2074 Args, Diags, ID, FLAGS, PARAM, SHOULD_PARSE, KEYPATH, DEFAULT_VALUE, \ 2075 IMPLIED_CHECK, IMPLIED_VALUE, NORMALIZER, MERGER, TABLE_INDEX) 2076 #include "clang/Driver/Options.inc" 2077 #undef DEPENDENCY_OUTPUT_OPTION_WITH_MARSHALLING 2078 2079 if (Args.hasArg(OPT_show_includes)) { 2080 // Writing both /showIncludes and preprocessor output to stdout 2081 // would produce interleaved output, so use stderr for /showIncludes. 2082 // This behaves the same as cl.exe, when /E, /EP or /P are passed. 2083 if (Action == frontend::PrintPreprocessedInput || !ShowLineMarkers) 2084 Opts.ShowIncludesDest = ShowIncludesDestination::Stderr; 2085 else 2086 Opts.ShowIncludesDest = ShowIncludesDestination::Stdout; 2087 } else { 2088 Opts.ShowIncludesDest = ShowIncludesDestination::None; 2089 } 2090 2091 // Add sanitizer ignorelists as extra dependencies. 2092 // They won't be discovered by the regular preprocessor, so 2093 // we let make / ninja to know about this implicit dependency. 2094 if (!Args.hasArg(OPT_fno_sanitize_ignorelist)) { 2095 for (const auto *A : Args.filtered(OPT_fsanitize_ignorelist_EQ)) { 2096 StringRef Val = A->getValue(); 2097 if (!Val.contains('=')) 2098 Opts.ExtraDeps.emplace_back(std::string(Val), EDK_SanitizeIgnorelist); 2099 } 2100 if (Opts.IncludeSystemHeaders) { 2101 for (const auto *A : Args.filtered(OPT_fsanitize_system_ignorelist_EQ)) { 2102 StringRef Val = A->getValue(); 2103 if (!Val.contains('=')) 2104 Opts.ExtraDeps.emplace_back(std::string(Val), EDK_SanitizeIgnorelist); 2105 } 2106 } 2107 } 2108 2109 // -fprofile-list= dependencies. 2110 for (const auto &Filename : Args.getAllArgValues(OPT_fprofile_list_EQ)) 2111 Opts.ExtraDeps.emplace_back(Filename, EDK_ProfileList); 2112 2113 // Propagate the extra dependencies. 2114 for (const auto *A : Args.filtered(OPT_fdepfile_entry)) 2115 Opts.ExtraDeps.emplace_back(A->getValue(), EDK_DepFileEntry); 2116 2117 // Only the -fmodule-file=<file> form. 2118 for (const auto *A : Args.filtered(OPT_fmodule_file)) { 2119 StringRef Val = A->getValue(); 2120 if (!Val.contains('=')) 2121 Opts.ExtraDeps.emplace_back(std::string(Val), EDK_ModuleFile); 2122 } 2123 2124 return Diags.getNumErrors() == NumErrorsBefore; 2125 } 2126 2127 static bool parseShowColorsArgs(const ArgList &Args, bool DefaultColor) { 2128 // Color diagnostics default to auto ("on" if terminal supports) in the driver 2129 // but default to off in cc1, needing an explicit OPT_fdiagnostics_color. 2130 // Support both clang's -f[no-]color-diagnostics and gcc's 2131 // -f[no-]diagnostics-colors[=never|always|auto]. 2132 enum { 2133 Colors_On, 2134 Colors_Off, 2135 Colors_Auto 2136 } ShowColors = DefaultColor ? Colors_Auto : Colors_Off; 2137 for (auto *A : Args) { 2138 const Option &O = A->getOption(); 2139 if (O.matches(options::OPT_fcolor_diagnostics) || 2140 O.matches(options::OPT_fdiagnostics_color)) { 2141 ShowColors = Colors_On; 2142 } else if (O.matches(options::OPT_fno_color_diagnostics) || 2143 O.matches(options::OPT_fno_diagnostics_color)) { 2144 ShowColors = Colors_Off; 2145 } else if (O.matches(options::OPT_fdiagnostics_color_EQ)) { 2146 StringRef Value(A->getValue()); 2147 if (Value == "always") 2148 ShowColors = Colors_On; 2149 else if (Value == "never") 2150 ShowColors = Colors_Off; 2151 else if (Value == "auto") 2152 ShowColors = Colors_Auto; 2153 } 2154 } 2155 return ShowColors == Colors_On || 2156 (ShowColors == Colors_Auto && 2157 llvm::sys::Process::StandardErrHasColors()); 2158 } 2159 2160 static bool checkVerifyPrefixes(const std::vector<std::string> &VerifyPrefixes, 2161 DiagnosticsEngine &Diags) { 2162 bool Success = true; 2163 for (const auto &Prefix : VerifyPrefixes) { 2164 // Every prefix must start with a letter and contain only alphanumeric 2165 // characters, hyphens, and underscores. 2166 auto BadChar = llvm::find_if(Prefix, [](char C) { 2167 return !isAlphanumeric(C) && C != '-' && C != '_'; 2168 }); 2169 if (BadChar != Prefix.end() || !isLetter(Prefix[0])) { 2170 Success = false; 2171 Diags.Report(diag::err_drv_invalid_value) << "-verify=" << Prefix; 2172 Diags.Report(diag::note_drv_verify_prefix_spelling); 2173 } 2174 } 2175 return Success; 2176 } 2177 2178 static void GenerateFileSystemArgs(const FileSystemOptions &Opts, 2179 SmallVectorImpl<const char *> &Args, 2180 CompilerInvocation::StringAllocator SA) { 2181 const FileSystemOptions &FileSystemOpts = Opts; 2182 2183 #define FILE_SYSTEM_OPTION_WITH_MARSHALLING( \ 2184 PREFIX_TYPE, NAME, ID, KIND, GROUP, ALIAS, ALIASARGS, FLAGS, PARAM, \ 2185 HELPTEXT, METAVAR, VALUES, SPELLING, SHOULD_PARSE, ALWAYS_EMIT, KEYPATH, \ 2186 DEFAULT_VALUE, IMPLIED_CHECK, IMPLIED_VALUE, NORMALIZER, DENORMALIZER, \ 2187 MERGER, EXTRACTOR, TABLE_INDEX) \ 2188 GENERATE_OPTION_WITH_MARSHALLING( \ 2189 Args, SA, KIND, FLAGS, SPELLING, ALWAYS_EMIT, KEYPATH, DEFAULT_VALUE, \ 2190 IMPLIED_CHECK, IMPLIED_VALUE, DENORMALIZER, EXTRACTOR, TABLE_INDEX) 2191 #include "clang/Driver/Options.inc" 2192 #undef FILE_SYSTEM_OPTION_WITH_MARSHALLING 2193 } 2194 2195 static bool ParseFileSystemArgs(FileSystemOptions &Opts, const ArgList &Args, 2196 DiagnosticsEngine &Diags) { 2197 unsigned NumErrorsBefore = Diags.getNumErrors(); 2198 2199 FileSystemOptions &FileSystemOpts = Opts; 2200 2201 #define FILE_SYSTEM_OPTION_WITH_MARSHALLING( \ 2202 PREFIX_TYPE, NAME, ID, KIND, GROUP, ALIAS, ALIASARGS, FLAGS, PARAM, \ 2203 HELPTEXT, METAVAR, VALUES, SPELLING, SHOULD_PARSE, ALWAYS_EMIT, KEYPATH, \ 2204 DEFAULT_VALUE, IMPLIED_CHECK, IMPLIED_VALUE, NORMALIZER, DENORMALIZER, \ 2205 MERGER, EXTRACTOR, TABLE_INDEX) \ 2206 PARSE_OPTION_WITH_MARSHALLING( \ 2207 Args, Diags, ID, FLAGS, PARAM, SHOULD_PARSE, KEYPATH, DEFAULT_VALUE, \ 2208 IMPLIED_CHECK, IMPLIED_VALUE, NORMALIZER, MERGER, TABLE_INDEX) 2209 #include "clang/Driver/Options.inc" 2210 #undef FILE_SYSTEM_OPTION_WITH_MARSHALLING 2211 2212 return Diags.getNumErrors() == NumErrorsBefore; 2213 } 2214 2215 static void GenerateMigratorArgs(const MigratorOptions &Opts, 2216 SmallVectorImpl<const char *> &Args, 2217 CompilerInvocation::StringAllocator SA) { 2218 const MigratorOptions &MigratorOpts = Opts; 2219 #define MIGRATOR_OPTION_WITH_MARSHALLING( \ 2220 PREFIX_TYPE, NAME, ID, KIND, GROUP, ALIAS, ALIASARGS, FLAGS, PARAM, \ 2221 HELPTEXT, METAVAR, VALUES, SPELLING, SHOULD_PARSE, ALWAYS_EMIT, KEYPATH, \ 2222 DEFAULT_VALUE, IMPLIED_CHECK, IMPLIED_VALUE, NORMALIZER, DENORMALIZER, \ 2223 MERGER, EXTRACTOR, TABLE_INDEX) \ 2224 GENERATE_OPTION_WITH_MARSHALLING( \ 2225 Args, SA, KIND, FLAGS, SPELLING, ALWAYS_EMIT, KEYPATH, DEFAULT_VALUE, \ 2226 IMPLIED_CHECK, IMPLIED_VALUE, DENORMALIZER, EXTRACTOR, TABLE_INDEX) 2227 #include "clang/Driver/Options.inc" 2228 #undef MIGRATOR_OPTION_WITH_MARSHALLING 2229 } 2230 2231 static bool ParseMigratorArgs(MigratorOptions &Opts, const ArgList &Args, 2232 DiagnosticsEngine &Diags) { 2233 unsigned NumErrorsBefore = Diags.getNumErrors(); 2234 2235 MigratorOptions &MigratorOpts = Opts; 2236 2237 #define MIGRATOR_OPTION_WITH_MARSHALLING( \ 2238 PREFIX_TYPE, NAME, ID, KIND, GROUP, ALIAS, ALIASARGS, FLAGS, PARAM, \ 2239 HELPTEXT, METAVAR, VALUES, SPELLING, SHOULD_PARSE, ALWAYS_EMIT, KEYPATH, \ 2240 DEFAULT_VALUE, IMPLIED_CHECK, IMPLIED_VALUE, NORMALIZER, DENORMALIZER, \ 2241 MERGER, EXTRACTOR, TABLE_INDEX) \ 2242 PARSE_OPTION_WITH_MARSHALLING( \ 2243 Args, Diags, ID, FLAGS, PARAM, SHOULD_PARSE, KEYPATH, DEFAULT_VALUE, \ 2244 IMPLIED_CHECK, IMPLIED_VALUE, NORMALIZER, MERGER, TABLE_INDEX) 2245 #include "clang/Driver/Options.inc" 2246 #undef MIGRATOR_OPTION_WITH_MARSHALLING 2247 2248 return Diags.getNumErrors() == NumErrorsBefore; 2249 } 2250 2251 void CompilerInvocation::GenerateDiagnosticArgs( 2252 const DiagnosticOptions &Opts, SmallVectorImpl<const char *> &Args, 2253 StringAllocator SA, bool DefaultDiagColor) { 2254 const DiagnosticOptions *DiagnosticOpts = &Opts; 2255 #define DIAG_OPTION_WITH_MARSHALLING( \ 2256 PREFIX_TYPE, NAME, ID, KIND, GROUP, ALIAS, ALIASARGS, FLAGS, PARAM, \ 2257 HELPTEXT, METAVAR, VALUES, SPELLING, SHOULD_PARSE, ALWAYS_EMIT, KEYPATH, \ 2258 DEFAULT_VALUE, IMPLIED_CHECK, IMPLIED_VALUE, NORMALIZER, DENORMALIZER, \ 2259 MERGER, EXTRACTOR, TABLE_INDEX) \ 2260 GENERATE_OPTION_WITH_MARSHALLING( \ 2261 Args, SA, KIND, FLAGS, SPELLING, ALWAYS_EMIT, KEYPATH, DEFAULT_VALUE, \ 2262 IMPLIED_CHECK, IMPLIED_VALUE, DENORMALIZER, EXTRACTOR, TABLE_INDEX) 2263 #include "clang/Driver/Options.inc" 2264 #undef DIAG_OPTION_WITH_MARSHALLING 2265 2266 if (!Opts.DiagnosticSerializationFile.empty()) 2267 GenerateArg(Args, OPT_diagnostic_serialized_file, 2268 Opts.DiagnosticSerializationFile, SA); 2269 2270 if (Opts.ShowColors) 2271 GenerateArg(Args, OPT_fcolor_diagnostics, SA); 2272 2273 if (Opts.VerifyDiagnostics && 2274 llvm::is_contained(Opts.VerifyPrefixes, "expected")) 2275 GenerateArg(Args, OPT_verify, SA); 2276 2277 for (const auto &Prefix : Opts.VerifyPrefixes) 2278 if (Prefix != "expected") 2279 GenerateArg(Args, OPT_verify_EQ, Prefix, SA); 2280 2281 DiagnosticLevelMask VIU = Opts.getVerifyIgnoreUnexpected(); 2282 if (VIU == DiagnosticLevelMask::None) { 2283 // This is the default, don't generate anything. 2284 } else if (VIU == DiagnosticLevelMask::All) { 2285 GenerateArg(Args, OPT_verify_ignore_unexpected, SA); 2286 } else { 2287 if (static_cast<unsigned>(VIU & DiagnosticLevelMask::Note) != 0) 2288 GenerateArg(Args, OPT_verify_ignore_unexpected_EQ, "note", SA); 2289 if (static_cast<unsigned>(VIU & DiagnosticLevelMask::Remark) != 0) 2290 GenerateArg(Args, OPT_verify_ignore_unexpected_EQ, "remark", SA); 2291 if (static_cast<unsigned>(VIU & DiagnosticLevelMask::Warning) != 0) 2292 GenerateArg(Args, OPT_verify_ignore_unexpected_EQ, "warning", SA); 2293 if (static_cast<unsigned>(VIU & DiagnosticLevelMask::Error) != 0) 2294 GenerateArg(Args, OPT_verify_ignore_unexpected_EQ, "error", SA); 2295 } 2296 2297 for (const auto &Warning : Opts.Warnings) { 2298 // This option is automatically generated from UndefPrefixes. 2299 if (Warning == "undef-prefix") 2300 continue; 2301 Args.push_back(SA(StringRef("-W") + Warning)); 2302 } 2303 2304 for (const auto &Remark : Opts.Remarks) { 2305 // These arguments are generated from OptimizationRemark fields of 2306 // CodeGenOptions. 2307 StringRef IgnoredRemarks[] = {"pass", "no-pass", 2308 "pass-analysis", "no-pass-analysis", 2309 "pass-missed", "no-pass-missed"}; 2310 if (llvm::is_contained(IgnoredRemarks, Remark)) 2311 continue; 2312 2313 Args.push_back(SA(StringRef("-R") + Remark)); 2314 } 2315 } 2316 2317 std::unique_ptr<DiagnosticOptions> 2318 clang::CreateAndPopulateDiagOpts(ArrayRef<const char *> Argv) { 2319 auto DiagOpts = std::make_unique<DiagnosticOptions>(); 2320 unsigned MissingArgIndex, MissingArgCount; 2321 InputArgList Args = getDriverOptTable().ParseArgs( 2322 Argv.slice(1), MissingArgIndex, MissingArgCount); 2323 // We ignore MissingArgCount and the return value of ParseDiagnosticArgs. 2324 // Any errors that would be diagnosed here will also be diagnosed later, 2325 // when the DiagnosticsEngine actually exists. 2326 (void)ParseDiagnosticArgs(*DiagOpts, Args); 2327 return DiagOpts; 2328 } 2329 2330 bool clang::ParseDiagnosticArgs(DiagnosticOptions &Opts, ArgList &Args, 2331 DiagnosticsEngine *Diags, 2332 bool DefaultDiagColor) { 2333 Optional<DiagnosticsEngine> IgnoringDiags; 2334 if (!Diags) { 2335 IgnoringDiags.emplace(new DiagnosticIDs(), new DiagnosticOptions(), 2336 new IgnoringDiagConsumer()); 2337 Diags = &*IgnoringDiags; 2338 } 2339 2340 unsigned NumErrorsBefore = Diags->getNumErrors(); 2341 2342 // The key paths of diagnostic options defined in Options.td start with 2343 // "DiagnosticOpts->". Let's provide the expected variable name and type. 2344 DiagnosticOptions *DiagnosticOpts = &Opts; 2345 2346 #define DIAG_OPTION_WITH_MARSHALLING( \ 2347 PREFIX_TYPE, NAME, ID, KIND, GROUP, ALIAS, ALIASARGS, FLAGS, PARAM, \ 2348 HELPTEXT, METAVAR, VALUES, SPELLING, SHOULD_PARSE, ALWAYS_EMIT, KEYPATH, \ 2349 DEFAULT_VALUE, IMPLIED_CHECK, IMPLIED_VALUE, NORMALIZER, DENORMALIZER, \ 2350 MERGER, EXTRACTOR, TABLE_INDEX) \ 2351 PARSE_OPTION_WITH_MARSHALLING( \ 2352 Args, *Diags, ID, FLAGS, PARAM, SHOULD_PARSE, KEYPATH, DEFAULT_VALUE, \ 2353 IMPLIED_CHECK, IMPLIED_VALUE, NORMALIZER, MERGER, TABLE_INDEX) 2354 #include "clang/Driver/Options.inc" 2355 #undef DIAG_OPTION_WITH_MARSHALLING 2356 2357 llvm::sys::Process::UseANSIEscapeCodes(Opts.UseANSIEscapeCodes); 2358 2359 if (Arg *A = 2360 Args.getLastArg(OPT_diagnostic_serialized_file, OPT__serialize_diags)) 2361 Opts.DiagnosticSerializationFile = A->getValue(); 2362 Opts.ShowColors = parseShowColorsArgs(Args, DefaultDiagColor); 2363 2364 Opts.VerifyDiagnostics = Args.hasArg(OPT_verify) || Args.hasArg(OPT_verify_EQ); 2365 Opts.VerifyPrefixes = Args.getAllArgValues(OPT_verify_EQ); 2366 if (Args.hasArg(OPT_verify)) 2367 Opts.VerifyPrefixes.push_back("expected"); 2368 // Keep VerifyPrefixes in its original order for the sake of diagnostics, and 2369 // then sort it to prepare for fast lookup using std::binary_search. 2370 if (!checkVerifyPrefixes(Opts.VerifyPrefixes, *Diags)) 2371 Opts.VerifyDiagnostics = false; 2372 else 2373 llvm::sort(Opts.VerifyPrefixes); 2374 DiagnosticLevelMask DiagMask = DiagnosticLevelMask::None; 2375 parseDiagnosticLevelMask( 2376 "-verify-ignore-unexpected=", 2377 Args.getAllArgValues(OPT_verify_ignore_unexpected_EQ), *Diags, DiagMask); 2378 if (Args.hasArg(OPT_verify_ignore_unexpected)) 2379 DiagMask = DiagnosticLevelMask::All; 2380 Opts.setVerifyIgnoreUnexpected(DiagMask); 2381 if (Opts.TabStop == 0 || Opts.TabStop > DiagnosticOptions::MaxTabStop) { 2382 Opts.TabStop = DiagnosticOptions::DefaultTabStop; 2383 Diags->Report(diag::warn_ignoring_ftabstop_value) 2384 << Opts.TabStop << DiagnosticOptions::DefaultTabStop; 2385 } 2386 2387 addDiagnosticArgs(Args, OPT_W_Group, OPT_W_value_Group, Opts.Warnings); 2388 addDiagnosticArgs(Args, OPT_R_Group, OPT_R_value_Group, Opts.Remarks); 2389 2390 return Diags->getNumErrors() == NumErrorsBefore; 2391 } 2392 2393 /// Parse the argument to the -ftest-module-file-extension 2394 /// command-line argument. 2395 /// 2396 /// \returns true on error, false on success. 2397 static bool parseTestModuleFileExtensionArg(StringRef Arg, 2398 std::string &BlockName, 2399 unsigned &MajorVersion, 2400 unsigned &MinorVersion, 2401 bool &Hashed, 2402 std::string &UserInfo) { 2403 SmallVector<StringRef, 5> Args; 2404 Arg.split(Args, ':', 5); 2405 if (Args.size() < 5) 2406 return true; 2407 2408 BlockName = std::string(Args[0]); 2409 if (Args[1].getAsInteger(10, MajorVersion)) return true; 2410 if (Args[2].getAsInteger(10, MinorVersion)) return true; 2411 if (Args[3].getAsInteger(2, Hashed)) return true; 2412 if (Args.size() > 4) 2413 UserInfo = std::string(Args[4]); 2414 return false; 2415 } 2416 2417 /// Return a table that associates command line option specifiers with the 2418 /// frontend action. Note: The pair {frontend::PluginAction, OPT_plugin} is 2419 /// intentionally missing, as this case is handled separately from other 2420 /// frontend options. 2421 static const auto &getFrontendActionTable() { 2422 static const std::pair<frontend::ActionKind, unsigned> Table[] = { 2423 {frontend::ASTDeclList, OPT_ast_list}, 2424 2425 {frontend::ASTDump, OPT_ast_dump_all_EQ}, 2426 {frontend::ASTDump, OPT_ast_dump_all}, 2427 {frontend::ASTDump, OPT_ast_dump_EQ}, 2428 {frontend::ASTDump, OPT_ast_dump}, 2429 {frontend::ASTDump, OPT_ast_dump_lookups}, 2430 {frontend::ASTDump, OPT_ast_dump_decl_types}, 2431 2432 {frontend::ASTPrint, OPT_ast_print}, 2433 {frontend::ASTView, OPT_ast_view}, 2434 {frontend::DumpCompilerOptions, OPT_compiler_options_dump}, 2435 {frontend::DumpRawTokens, OPT_dump_raw_tokens}, 2436 {frontend::DumpTokens, OPT_dump_tokens}, 2437 {frontend::EmitAssembly, OPT_S}, 2438 {frontend::EmitBC, OPT_emit_llvm_bc}, 2439 {frontend::EmitHTML, OPT_emit_html}, 2440 {frontend::EmitLLVM, OPT_emit_llvm}, 2441 {frontend::EmitLLVMOnly, OPT_emit_llvm_only}, 2442 {frontend::EmitCodeGenOnly, OPT_emit_codegen_only}, 2443 {frontend::EmitObj, OPT_emit_obj}, 2444 {frontend::ExtractAPI, OPT_extract_api}, 2445 2446 {frontend::FixIt, OPT_fixit_EQ}, 2447 {frontend::FixIt, OPT_fixit}, 2448 2449 {frontend::GenerateModule, OPT_emit_module}, 2450 {frontend::GenerateModuleInterface, OPT_emit_module_interface}, 2451 {frontend::GenerateHeaderModule, OPT_emit_header_module}, 2452 {frontend::GeneratePCH, OPT_emit_pch}, 2453 {frontend::GenerateInterfaceStubs, OPT_emit_interface_stubs}, 2454 {frontend::InitOnly, OPT_init_only}, 2455 {frontend::ParseSyntaxOnly, OPT_fsyntax_only}, 2456 {frontend::ModuleFileInfo, OPT_module_file_info}, 2457 {frontend::VerifyPCH, OPT_verify_pch}, 2458 {frontend::PrintPreamble, OPT_print_preamble}, 2459 {frontend::PrintPreprocessedInput, OPT_E}, 2460 {frontend::TemplightDump, OPT_templight_dump}, 2461 {frontend::RewriteMacros, OPT_rewrite_macros}, 2462 {frontend::RewriteObjC, OPT_rewrite_objc}, 2463 {frontend::RewriteTest, OPT_rewrite_test}, 2464 {frontend::RunAnalysis, OPT_analyze}, 2465 {frontend::MigrateSource, OPT_migrate}, 2466 {frontend::RunPreprocessorOnly, OPT_Eonly}, 2467 {frontend::PrintDependencyDirectivesSourceMinimizerOutput, 2468 OPT_print_dependency_directives_minimized_source}, 2469 }; 2470 2471 return Table; 2472 } 2473 2474 /// Maps command line option to frontend action. 2475 static Optional<frontend::ActionKind> getFrontendAction(OptSpecifier &Opt) { 2476 for (const auto &ActionOpt : getFrontendActionTable()) 2477 if (ActionOpt.second == Opt.getID()) 2478 return ActionOpt.first; 2479 2480 return None; 2481 } 2482 2483 /// Maps frontend action to command line option. 2484 static Optional<OptSpecifier> 2485 getProgramActionOpt(frontend::ActionKind ProgramAction) { 2486 for (const auto &ActionOpt : getFrontendActionTable()) 2487 if (ActionOpt.first == ProgramAction) 2488 return OptSpecifier(ActionOpt.second); 2489 2490 return None; 2491 } 2492 2493 static void GenerateFrontendArgs(const FrontendOptions &Opts, 2494 SmallVectorImpl<const char *> &Args, 2495 CompilerInvocation::StringAllocator SA, 2496 bool IsHeader) { 2497 const FrontendOptions &FrontendOpts = Opts; 2498 #define FRONTEND_OPTION_WITH_MARSHALLING( \ 2499 PREFIX_TYPE, NAME, ID, KIND, GROUP, ALIAS, ALIASARGS, FLAGS, PARAM, \ 2500 HELPTEXT, METAVAR, VALUES, SPELLING, SHOULD_PARSE, ALWAYS_EMIT, KEYPATH, \ 2501 DEFAULT_VALUE, IMPLIED_CHECK, IMPLIED_VALUE, NORMALIZER, DENORMALIZER, \ 2502 MERGER, EXTRACTOR, TABLE_INDEX) \ 2503 GENERATE_OPTION_WITH_MARSHALLING( \ 2504 Args, SA, KIND, FLAGS, SPELLING, ALWAYS_EMIT, KEYPATH, DEFAULT_VALUE, \ 2505 IMPLIED_CHECK, IMPLIED_VALUE, DENORMALIZER, EXTRACTOR, TABLE_INDEX) 2506 #include "clang/Driver/Options.inc" 2507 #undef FRONTEND_OPTION_WITH_MARSHALLING 2508 2509 Optional<OptSpecifier> ProgramActionOpt = 2510 getProgramActionOpt(Opts.ProgramAction); 2511 2512 // Generating a simple flag covers most frontend actions. 2513 std::function<void()> GenerateProgramAction = [&]() { 2514 GenerateArg(Args, *ProgramActionOpt, SA); 2515 }; 2516 2517 if (!ProgramActionOpt) { 2518 // PluginAction is the only program action handled separately. 2519 assert(Opts.ProgramAction == frontend::PluginAction && 2520 "Frontend action without option."); 2521 GenerateProgramAction = [&]() { 2522 GenerateArg(Args, OPT_plugin, Opts.ActionName, SA); 2523 }; 2524 } 2525 2526 // FIXME: Simplify the complex 'AST dump' command line. 2527 if (Opts.ProgramAction == frontend::ASTDump) { 2528 GenerateProgramAction = [&]() { 2529 // ASTDumpLookups, ASTDumpDeclTypes and ASTDumpFilter are generated via 2530 // marshalling infrastructure. 2531 2532 if (Opts.ASTDumpFormat != ADOF_Default) { 2533 StringRef Format; 2534 switch (Opts.ASTDumpFormat) { 2535 case ADOF_Default: 2536 llvm_unreachable("Default AST dump format."); 2537 case ADOF_JSON: 2538 Format = "json"; 2539 break; 2540 } 2541 2542 if (Opts.ASTDumpAll) 2543 GenerateArg(Args, OPT_ast_dump_all_EQ, Format, SA); 2544 if (Opts.ASTDumpDecls) 2545 GenerateArg(Args, OPT_ast_dump_EQ, Format, SA); 2546 } else { 2547 if (Opts.ASTDumpAll) 2548 GenerateArg(Args, OPT_ast_dump_all, SA); 2549 if (Opts.ASTDumpDecls) 2550 GenerateArg(Args, OPT_ast_dump, SA); 2551 } 2552 }; 2553 } 2554 2555 if (Opts.ProgramAction == frontend::FixIt && !Opts.FixItSuffix.empty()) { 2556 GenerateProgramAction = [&]() { 2557 GenerateArg(Args, OPT_fixit_EQ, Opts.FixItSuffix, SA); 2558 }; 2559 } 2560 2561 GenerateProgramAction(); 2562 2563 for (const auto &PluginArgs : Opts.PluginArgs) { 2564 Option Opt = getDriverOptTable().getOption(OPT_plugin_arg); 2565 const char *Spelling = 2566 SA(Opt.getPrefix() + Opt.getName() + PluginArgs.first); 2567 for (const auto &PluginArg : PluginArgs.second) 2568 denormalizeString(Args, Spelling, SA, Opt.getKind(), 0, PluginArg); 2569 } 2570 2571 for (const auto &Ext : Opts.ModuleFileExtensions) 2572 if (auto *TestExt = dyn_cast_or_null<TestModuleFileExtension>(Ext.get())) 2573 GenerateArg(Args, OPT_ftest_module_file_extension_EQ, TestExt->str(), SA); 2574 2575 if (!Opts.CodeCompletionAt.FileName.empty()) 2576 GenerateArg(Args, OPT_code_completion_at, Opts.CodeCompletionAt.ToString(), 2577 SA); 2578 2579 for (const auto &Plugin : Opts.Plugins) 2580 GenerateArg(Args, OPT_load, Plugin, SA); 2581 2582 // ASTDumpDecls and ASTDumpAll already handled with ProgramAction. 2583 2584 for (const auto &ModuleFile : Opts.ModuleFiles) 2585 GenerateArg(Args, OPT_fmodule_file, ModuleFile, SA); 2586 2587 if (Opts.AuxTargetCPU.hasValue()) 2588 GenerateArg(Args, OPT_aux_target_cpu, *Opts.AuxTargetCPU, SA); 2589 2590 if (Opts.AuxTargetFeatures.hasValue()) 2591 for (const auto &Feature : *Opts.AuxTargetFeatures) 2592 GenerateArg(Args, OPT_aux_target_feature, Feature, SA); 2593 2594 { 2595 StringRef Preprocessed = Opts.DashX.isPreprocessed() ? "-cpp-output" : ""; 2596 StringRef ModuleMap = 2597 Opts.DashX.getFormat() == InputKind::ModuleMap ? "-module-map" : ""; 2598 StringRef Header = IsHeader ? "-header" : ""; 2599 2600 StringRef Lang; 2601 switch (Opts.DashX.getLanguage()) { 2602 case Language::C: 2603 Lang = "c"; 2604 break; 2605 case Language::OpenCL: 2606 Lang = "cl"; 2607 break; 2608 case Language::OpenCLCXX: 2609 Lang = "clcpp"; 2610 break; 2611 case Language::CUDA: 2612 Lang = "cuda"; 2613 break; 2614 case Language::HIP: 2615 Lang = "hip"; 2616 break; 2617 case Language::CXX: 2618 Lang = "c++"; 2619 break; 2620 case Language::ObjC: 2621 Lang = "objective-c"; 2622 break; 2623 case Language::ObjCXX: 2624 Lang = "objective-c++"; 2625 break; 2626 case Language::RenderScript: 2627 Lang = "renderscript"; 2628 break; 2629 case Language::Asm: 2630 Lang = "assembler-with-cpp"; 2631 break; 2632 case Language::Unknown: 2633 assert(Opts.DashX.getFormat() == InputKind::Precompiled && 2634 "Generating -x argument for unknown language (not precompiled)."); 2635 Lang = "ast"; 2636 break; 2637 case Language::LLVM_IR: 2638 Lang = "ir"; 2639 break; 2640 } 2641 2642 GenerateArg(Args, OPT_x, Lang + Header + ModuleMap + Preprocessed, SA); 2643 } 2644 2645 // OPT_INPUT has a unique class, generate it directly. 2646 for (const auto &Input : Opts.Inputs) 2647 Args.push_back(SA(Input.getFile())); 2648 } 2649 2650 static bool ParseFrontendArgs(FrontendOptions &Opts, ArgList &Args, 2651 DiagnosticsEngine &Diags, bool &IsHeaderFile) { 2652 unsigned NumErrorsBefore = Diags.getNumErrors(); 2653 2654 FrontendOptions &FrontendOpts = Opts; 2655 2656 #define FRONTEND_OPTION_WITH_MARSHALLING( \ 2657 PREFIX_TYPE, NAME, ID, KIND, GROUP, ALIAS, ALIASARGS, FLAGS, PARAM, \ 2658 HELPTEXT, METAVAR, VALUES, SPELLING, SHOULD_PARSE, ALWAYS_EMIT, KEYPATH, \ 2659 DEFAULT_VALUE, IMPLIED_CHECK, IMPLIED_VALUE, NORMALIZER, DENORMALIZER, \ 2660 MERGER, EXTRACTOR, TABLE_INDEX) \ 2661 PARSE_OPTION_WITH_MARSHALLING( \ 2662 Args, Diags, ID, FLAGS, PARAM, SHOULD_PARSE, KEYPATH, DEFAULT_VALUE, \ 2663 IMPLIED_CHECK, IMPLIED_VALUE, NORMALIZER, MERGER, TABLE_INDEX) 2664 #include "clang/Driver/Options.inc" 2665 #undef FRONTEND_OPTION_WITH_MARSHALLING 2666 2667 Opts.ProgramAction = frontend::ParseSyntaxOnly; 2668 if (const Arg *A = Args.getLastArg(OPT_Action_Group)) { 2669 OptSpecifier Opt = OptSpecifier(A->getOption().getID()); 2670 Optional<frontend::ActionKind> ProgramAction = getFrontendAction(Opt); 2671 assert(ProgramAction && "Option specifier not in Action_Group."); 2672 2673 if (ProgramAction == frontend::ASTDump && 2674 (Opt == OPT_ast_dump_all_EQ || Opt == OPT_ast_dump_EQ)) { 2675 unsigned Val = llvm::StringSwitch<unsigned>(A->getValue()) 2676 .CaseLower("default", ADOF_Default) 2677 .CaseLower("json", ADOF_JSON) 2678 .Default(std::numeric_limits<unsigned>::max()); 2679 2680 if (Val != std::numeric_limits<unsigned>::max()) 2681 Opts.ASTDumpFormat = static_cast<ASTDumpOutputFormat>(Val); 2682 else { 2683 Diags.Report(diag::err_drv_invalid_value) 2684 << A->getAsString(Args) << A->getValue(); 2685 Opts.ASTDumpFormat = ADOF_Default; 2686 } 2687 } 2688 2689 if (ProgramAction == frontend::FixIt && Opt == OPT_fixit_EQ) 2690 Opts.FixItSuffix = A->getValue(); 2691 2692 if (ProgramAction == frontend::GenerateInterfaceStubs) { 2693 StringRef ArgStr = 2694 Args.hasArg(OPT_interface_stub_version_EQ) 2695 ? Args.getLastArgValue(OPT_interface_stub_version_EQ) 2696 : "ifs-v1"; 2697 if (ArgStr == "experimental-yaml-elf-v1" || 2698 ArgStr == "experimental-ifs-v1" || ArgStr == "experimental-ifs-v2" || 2699 ArgStr == "experimental-tapi-elf-v1") { 2700 std::string ErrorMessage = 2701 "Invalid interface stub format: " + ArgStr.str() + 2702 " is deprecated."; 2703 Diags.Report(diag::err_drv_invalid_value) 2704 << "Must specify a valid interface stub format type, ie: " 2705 "-interface-stub-version=ifs-v1" 2706 << ErrorMessage; 2707 ProgramAction = frontend::ParseSyntaxOnly; 2708 } else if (!ArgStr.startswith("ifs-")) { 2709 std::string ErrorMessage = 2710 "Invalid interface stub format: " + ArgStr.str() + "."; 2711 Diags.Report(diag::err_drv_invalid_value) 2712 << "Must specify a valid interface stub format type, ie: " 2713 "-interface-stub-version=ifs-v1" 2714 << ErrorMessage; 2715 ProgramAction = frontend::ParseSyntaxOnly; 2716 } 2717 } 2718 2719 Opts.ProgramAction = *ProgramAction; 2720 } 2721 2722 if (const Arg* A = Args.getLastArg(OPT_plugin)) { 2723 Opts.Plugins.emplace_back(A->getValue(0)); 2724 Opts.ProgramAction = frontend::PluginAction; 2725 Opts.ActionName = A->getValue(); 2726 } 2727 for (const auto *AA : Args.filtered(OPT_plugin_arg)) 2728 Opts.PluginArgs[AA->getValue(0)].emplace_back(AA->getValue(1)); 2729 2730 for (const std::string &Arg : 2731 Args.getAllArgValues(OPT_ftest_module_file_extension_EQ)) { 2732 std::string BlockName; 2733 unsigned MajorVersion; 2734 unsigned MinorVersion; 2735 bool Hashed; 2736 std::string UserInfo; 2737 if (parseTestModuleFileExtensionArg(Arg, BlockName, MajorVersion, 2738 MinorVersion, Hashed, UserInfo)) { 2739 Diags.Report(diag::err_test_module_file_extension_format) << Arg; 2740 2741 continue; 2742 } 2743 2744 // Add the testing module file extension. 2745 Opts.ModuleFileExtensions.push_back( 2746 std::make_shared<TestModuleFileExtension>( 2747 BlockName, MajorVersion, MinorVersion, Hashed, UserInfo)); 2748 } 2749 2750 if (const Arg *A = Args.getLastArg(OPT_code_completion_at)) { 2751 Opts.CodeCompletionAt = 2752 ParsedSourceLocation::FromString(A->getValue()); 2753 if (Opts.CodeCompletionAt.FileName.empty()) 2754 Diags.Report(diag::err_drv_invalid_value) 2755 << A->getAsString(Args) << A->getValue(); 2756 } 2757 2758 Opts.Plugins = Args.getAllArgValues(OPT_load); 2759 Opts.ASTDumpDecls = Args.hasArg(OPT_ast_dump, OPT_ast_dump_EQ); 2760 Opts.ASTDumpAll = Args.hasArg(OPT_ast_dump_all, OPT_ast_dump_all_EQ); 2761 // Only the -fmodule-file=<file> form. 2762 for (const auto *A : Args.filtered(OPT_fmodule_file)) { 2763 StringRef Val = A->getValue(); 2764 if (!Val.contains('=')) 2765 Opts.ModuleFiles.push_back(std::string(Val)); 2766 } 2767 2768 if (Opts.ProgramAction != frontend::GenerateModule && Opts.IsSystemModule) 2769 Diags.Report(diag::err_drv_argument_only_allowed_with) << "-fsystem-module" 2770 << "-emit-module"; 2771 2772 if (Args.hasArg(OPT_aux_target_cpu)) 2773 Opts.AuxTargetCPU = std::string(Args.getLastArgValue(OPT_aux_target_cpu)); 2774 if (Args.hasArg(OPT_aux_target_feature)) 2775 Opts.AuxTargetFeatures = Args.getAllArgValues(OPT_aux_target_feature); 2776 2777 if (Opts.ARCMTAction != FrontendOptions::ARCMT_None && 2778 Opts.ObjCMTAction != FrontendOptions::ObjCMT_None) { 2779 Diags.Report(diag::err_drv_argument_not_allowed_with) 2780 << "ARC migration" << "ObjC migration"; 2781 } 2782 2783 InputKind DashX(Language::Unknown); 2784 if (const Arg *A = Args.getLastArg(OPT_x)) { 2785 StringRef XValue = A->getValue(); 2786 2787 // Parse suffixes: '<lang>(-header|[-module-map][-cpp-output])'. 2788 // FIXME: Supporting '<lang>-header-cpp-output' would be useful. 2789 bool Preprocessed = XValue.consume_back("-cpp-output"); 2790 bool ModuleMap = XValue.consume_back("-module-map"); 2791 IsHeaderFile = !Preprocessed && !ModuleMap && 2792 XValue != "precompiled-header" && 2793 XValue.consume_back("-header"); 2794 2795 // Principal languages. 2796 DashX = llvm::StringSwitch<InputKind>(XValue) 2797 .Case("c", Language::C) 2798 .Case("cl", Language::OpenCL) 2799 .Case("clcpp", Language::OpenCLCXX) 2800 .Case("cuda", Language::CUDA) 2801 .Case("hip", Language::HIP) 2802 .Case("c++", Language::CXX) 2803 .Case("objective-c", Language::ObjC) 2804 .Case("objective-c++", Language::ObjCXX) 2805 .Case("renderscript", Language::RenderScript) 2806 .Default(Language::Unknown); 2807 2808 // "objc[++]-cpp-output" is an acceptable synonym for 2809 // "objective-c[++]-cpp-output". 2810 if (DashX.isUnknown() && Preprocessed && !IsHeaderFile && !ModuleMap) 2811 DashX = llvm::StringSwitch<InputKind>(XValue) 2812 .Case("objc", Language::ObjC) 2813 .Case("objc++", Language::ObjCXX) 2814 .Default(Language::Unknown); 2815 2816 // Some special cases cannot be combined with suffixes. 2817 if (DashX.isUnknown() && !Preprocessed && !ModuleMap && !IsHeaderFile) 2818 DashX = llvm::StringSwitch<InputKind>(XValue) 2819 .Case("cpp-output", InputKind(Language::C).getPreprocessed()) 2820 .Case("assembler-with-cpp", Language::Asm) 2821 .Cases("ast", "pcm", "precompiled-header", 2822 InputKind(Language::Unknown, InputKind::Precompiled)) 2823 .Case("ir", Language::LLVM_IR) 2824 .Default(Language::Unknown); 2825 2826 if (DashX.isUnknown()) 2827 Diags.Report(diag::err_drv_invalid_value) 2828 << A->getAsString(Args) << A->getValue(); 2829 2830 if (Preprocessed) 2831 DashX = DashX.getPreprocessed(); 2832 if (ModuleMap) 2833 DashX = DashX.withFormat(InputKind::ModuleMap); 2834 } 2835 2836 // '-' is the default input if none is given. 2837 std::vector<std::string> Inputs = Args.getAllArgValues(OPT_INPUT); 2838 Opts.Inputs.clear(); 2839 if (Inputs.empty()) 2840 Inputs.push_back("-"); 2841 for (unsigned i = 0, e = Inputs.size(); i != e; ++i) { 2842 InputKind IK = DashX; 2843 if (IK.isUnknown()) { 2844 IK = FrontendOptions::getInputKindForExtension( 2845 StringRef(Inputs[i]).rsplit('.').second); 2846 // FIXME: Warn on this? 2847 if (IK.isUnknown()) 2848 IK = Language::C; 2849 // FIXME: Remove this hack. 2850 if (i == 0) 2851 DashX = IK; 2852 } 2853 2854 bool IsSystem = false; 2855 2856 // The -emit-module action implicitly takes a module map. 2857 if (Opts.ProgramAction == frontend::GenerateModule && 2858 IK.getFormat() == InputKind::Source) { 2859 IK = IK.withFormat(InputKind::ModuleMap); 2860 IsSystem = Opts.IsSystemModule; 2861 } 2862 2863 Opts.Inputs.emplace_back(std::move(Inputs[i]), IK, IsSystem); 2864 } 2865 2866 Opts.DashX = DashX; 2867 2868 return Diags.getNumErrors() == NumErrorsBefore; 2869 } 2870 2871 std::string CompilerInvocation::GetResourcesPath(const char *Argv0, 2872 void *MainAddr) { 2873 std::string ClangExecutable = 2874 llvm::sys::fs::getMainExecutable(Argv0, MainAddr); 2875 return Driver::GetResourcesPath(ClangExecutable, CLANG_RESOURCE_DIR); 2876 } 2877 2878 static void GenerateHeaderSearchArgs(HeaderSearchOptions &Opts, 2879 SmallVectorImpl<const char *> &Args, 2880 CompilerInvocation::StringAllocator SA) { 2881 const HeaderSearchOptions *HeaderSearchOpts = &Opts; 2882 #define HEADER_SEARCH_OPTION_WITH_MARSHALLING( \ 2883 PREFIX_TYPE, NAME, ID, KIND, GROUP, ALIAS, ALIASARGS, FLAGS, PARAM, \ 2884 HELPTEXT, METAVAR, VALUES, SPELLING, SHOULD_PARSE, ALWAYS_EMIT, KEYPATH, \ 2885 DEFAULT_VALUE, IMPLIED_CHECK, IMPLIED_VALUE, NORMALIZER, DENORMALIZER, \ 2886 MERGER, EXTRACTOR, TABLE_INDEX) \ 2887 GENERATE_OPTION_WITH_MARSHALLING( \ 2888 Args, SA, KIND, FLAGS, SPELLING, ALWAYS_EMIT, KEYPATH, DEFAULT_VALUE, \ 2889 IMPLIED_CHECK, IMPLIED_VALUE, DENORMALIZER, EXTRACTOR, TABLE_INDEX) 2890 #include "clang/Driver/Options.inc" 2891 #undef HEADER_SEARCH_OPTION_WITH_MARSHALLING 2892 2893 if (Opts.UseLibcxx) 2894 GenerateArg(Args, OPT_stdlib_EQ, "libc++", SA); 2895 2896 if (!Opts.ModuleCachePath.empty()) 2897 GenerateArg(Args, OPT_fmodules_cache_path, Opts.ModuleCachePath, SA); 2898 2899 for (const auto &File : Opts.PrebuiltModuleFiles) 2900 GenerateArg(Args, OPT_fmodule_file, File.first + "=" + File.second, SA); 2901 2902 for (const auto &Path : Opts.PrebuiltModulePaths) 2903 GenerateArg(Args, OPT_fprebuilt_module_path, Path, SA); 2904 2905 for (const auto &Macro : Opts.ModulesIgnoreMacros) 2906 GenerateArg(Args, OPT_fmodules_ignore_macro, Macro.val(), SA); 2907 2908 auto Matches = [](const HeaderSearchOptions::Entry &Entry, 2909 llvm::ArrayRef<frontend::IncludeDirGroup> Groups, 2910 llvm::Optional<bool> IsFramework, 2911 llvm::Optional<bool> IgnoreSysRoot) { 2912 return llvm::is_contained(Groups, Entry.Group) && 2913 (!IsFramework || (Entry.IsFramework == *IsFramework)) && 2914 (!IgnoreSysRoot || (Entry.IgnoreSysRoot == *IgnoreSysRoot)); 2915 }; 2916 2917 auto It = Opts.UserEntries.begin(); 2918 auto End = Opts.UserEntries.end(); 2919 2920 // Add -I..., -F..., and -index-header-map options in order. 2921 for (; It < End && 2922 Matches(*It, {frontend::IndexHeaderMap, frontend::Angled}, None, true); 2923 ++It) { 2924 OptSpecifier Opt = [It, Matches]() { 2925 if (Matches(*It, frontend::IndexHeaderMap, true, true)) 2926 return OPT_F; 2927 if (Matches(*It, frontend::IndexHeaderMap, false, true)) 2928 return OPT_I; 2929 if (Matches(*It, frontend::Angled, true, true)) 2930 return OPT_F; 2931 if (Matches(*It, frontend::Angled, false, true)) 2932 return OPT_I; 2933 llvm_unreachable("Unexpected HeaderSearchOptions::Entry."); 2934 }(); 2935 2936 if (It->Group == frontend::IndexHeaderMap) 2937 GenerateArg(Args, OPT_index_header_map, SA); 2938 GenerateArg(Args, Opt, It->Path, SA); 2939 }; 2940 2941 // Note: some paths that came from "[-iprefix=xx] -iwithprefixbefore=yy" may 2942 // have already been generated as "-I[xx]yy". If that's the case, their 2943 // position on command line was such that this has no semantic impact on 2944 // include paths. 2945 for (; It < End && 2946 Matches(*It, {frontend::After, frontend::Angled}, false, true); 2947 ++It) { 2948 OptSpecifier Opt = 2949 It->Group == frontend::After ? OPT_iwithprefix : OPT_iwithprefixbefore; 2950 GenerateArg(Args, Opt, It->Path, SA); 2951 } 2952 2953 // Note: Some paths that came from "-idirafter=xxyy" may have already been 2954 // generated as "-iwithprefix=xxyy". If that's the case, their position on 2955 // command line was such that this has no semantic impact on include paths. 2956 for (; It < End && Matches(*It, {frontend::After}, false, true); ++It) 2957 GenerateArg(Args, OPT_idirafter, It->Path, SA); 2958 for (; It < End && Matches(*It, {frontend::Quoted}, false, true); ++It) 2959 GenerateArg(Args, OPT_iquote, It->Path, SA); 2960 for (; It < End && Matches(*It, {frontend::System}, false, None); ++It) 2961 GenerateArg(Args, It->IgnoreSysRoot ? OPT_isystem : OPT_iwithsysroot, 2962 It->Path, SA); 2963 for (; It < End && Matches(*It, {frontend::System}, true, true); ++It) 2964 GenerateArg(Args, OPT_iframework, It->Path, SA); 2965 for (; It < End && Matches(*It, {frontend::System}, true, false); ++It) 2966 GenerateArg(Args, OPT_iframeworkwithsysroot, It->Path, SA); 2967 2968 // Add the paths for the various language specific isystem flags. 2969 for (; It < End && Matches(*It, {frontend::CSystem}, false, true); ++It) 2970 GenerateArg(Args, OPT_c_isystem, It->Path, SA); 2971 for (; It < End && Matches(*It, {frontend::CXXSystem}, false, true); ++It) 2972 GenerateArg(Args, OPT_cxx_isystem, It->Path, SA); 2973 for (; It < End && Matches(*It, {frontend::ObjCSystem}, false, true); ++It) 2974 GenerateArg(Args, OPT_objc_isystem, It->Path, SA); 2975 for (; It < End && Matches(*It, {frontend::ObjCXXSystem}, false, true); ++It) 2976 GenerateArg(Args, OPT_objcxx_isystem, It->Path, SA); 2977 2978 // Add the internal paths from a driver that detects standard include paths. 2979 // Note: Some paths that came from "-internal-isystem" arguments may have 2980 // already been generated as "-isystem". If that's the case, their position on 2981 // command line was such that this has no semantic impact on include paths. 2982 for (; It < End && 2983 Matches(*It, {frontend::System, frontend::ExternCSystem}, false, true); 2984 ++It) { 2985 OptSpecifier Opt = It->Group == frontend::System 2986 ? OPT_internal_isystem 2987 : OPT_internal_externc_isystem; 2988 GenerateArg(Args, Opt, It->Path, SA); 2989 } 2990 2991 assert(It == End && "Unhandled HeaderSearchOption::Entry."); 2992 2993 // Add the path prefixes which are implicitly treated as being system headers. 2994 for (const auto &P : Opts.SystemHeaderPrefixes) { 2995 OptSpecifier Opt = P.IsSystemHeader ? OPT_system_header_prefix 2996 : OPT_no_system_header_prefix; 2997 GenerateArg(Args, Opt, P.Prefix, SA); 2998 } 2999 3000 for (const std::string &F : Opts.VFSOverlayFiles) 3001 GenerateArg(Args, OPT_ivfsoverlay, F, SA); 3002 } 3003 3004 static bool ParseHeaderSearchArgs(HeaderSearchOptions &Opts, ArgList &Args, 3005 DiagnosticsEngine &Diags, 3006 const std::string &WorkingDir) { 3007 unsigned NumErrorsBefore = Diags.getNumErrors(); 3008 3009 HeaderSearchOptions *HeaderSearchOpts = &Opts; 3010 3011 #define HEADER_SEARCH_OPTION_WITH_MARSHALLING( \ 3012 PREFIX_TYPE, NAME, ID, KIND, GROUP, ALIAS, ALIASARGS, FLAGS, PARAM, \ 3013 HELPTEXT, METAVAR, VALUES, SPELLING, SHOULD_PARSE, ALWAYS_EMIT, KEYPATH, \ 3014 DEFAULT_VALUE, IMPLIED_CHECK, IMPLIED_VALUE, NORMALIZER, DENORMALIZER, \ 3015 MERGER, EXTRACTOR, TABLE_INDEX) \ 3016 PARSE_OPTION_WITH_MARSHALLING( \ 3017 Args, Diags, ID, FLAGS, PARAM, SHOULD_PARSE, KEYPATH, DEFAULT_VALUE, \ 3018 IMPLIED_CHECK, IMPLIED_VALUE, NORMALIZER, MERGER, TABLE_INDEX) 3019 #include "clang/Driver/Options.inc" 3020 #undef HEADER_SEARCH_OPTION_WITH_MARSHALLING 3021 3022 if (const Arg *A = Args.getLastArg(OPT_stdlib_EQ)) 3023 Opts.UseLibcxx = (strcmp(A->getValue(), "libc++") == 0); 3024 3025 // Canonicalize -fmodules-cache-path before storing it. 3026 SmallString<128> P(Args.getLastArgValue(OPT_fmodules_cache_path)); 3027 if (!(P.empty() || llvm::sys::path::is_absolute(P))) { 3028 if (WorkingDir.empty()) 3029 llvm::sys::fs::make_absolute(P); 3030 else 3031 llvm::sys::fs::make_absolute(WorkingDir, P); 3032 } 3033 llvm::sys::path::remove_dots(P); 3034 Opts.ModuleCachePath = std::string(P.str()); 3035 3036 // Only the -fmodule-file=<name>=<file> form. 3037 for (const auto *A : Args.filtered(OPT_fmodule_file)) { 3038 StringRef Val = A->getValue(); 3039 if (Val.contains('=')) { 3040 auto Split = Val.split('='); 3041 Opts.PrebuiltModuleFiles.insert( 3042 {std::string(Split.first), std::string(Split.second)}); 3043 } 3044 } 3045 for (const auto *A : Args.filtered(OPT_fprebuilt_module_path)) 3046 Opts.AddPrebuiltModulePath(A->getValue()); 3047 3048 for (const auto *A : Args.filtered(OPT_fmodules_ignore_macro)) { 3049 StringRef MacroDef = A->getValue(); 3050 Opts.ModulesIgnoreMacros.insert( 3051 llvm::CachedHashString(MacroDef.split('=').first)); 3052 } 3053 3054 // Add -I..., -F..., and -index-header-map options in order. 3055 bool IsIndexHeaderMap = false; 3056 bool IsSysrootSpecified = 3057 Args.hasArg(OPT__sysroot_EQ) || Args.hasArg(OPT_isysroot); 3058 for (const auto *A : Args.filtered(OPT_I, OPT_F, OPT_index_header_map)) { 3059 if (A->getOption().matches(OPT_index_header_map)) { 3060 // -index-header-map applies to the next -I or -F. 3061 IsIndexHeaderMap = true; 3062 continue; 3063 } 3064 3065 frontend::IncludeDirGroup Group = 3066 IsIndexHeaderMap ? frontend::IndexHeaderMap : frontend::Angled; 3067 3068 bool IsFramework = A->getOption().matches(OPT_F); 3069 std::string Path = A->getValue(); 3070 3071 if (IsSysrootSpecified && !IsFramework && A->getValue()[0] == '=') { 3072 SmallString<32> Buffer; 3073 llvm::sys::path::append(Buffer, Opts.Sysroot, 3074 llvm::StringRef(A->getValue()).substr(1)); 3075 Path = std::string(Buffer.str()); 3076 } 3077 3078 Opts.AddPath(Path, Group, IsFramework, 3079 /*IgnoreSysroot*/ true); 3080 IsIndexHeaderMap = false; 3081 } 3082 3083 // Add -iprefix/-iwithprefix/-iwithprefixbefore options. 3084 StringRef Prefix = ""; // FIXME: This isn't the correct default prefix. 3085 for (const auto *A : 3086 Args.filtered(OPT_iprefix, OPT_iwithprefix, OPT_iwithprefixbefore)) { 3087 if (A->getOption().matches(OPT_iprefix)) 3088 Prefix = A->getValue(); 3089 else if (A->getOption().matches(OPT_iwithprefix)) 3090 Opts.AddPath(Prefix.str() + A->getValue(), frontend::After, false, true); 3091 else 3092 Opts.AddPath(Prefix.str() + A->getValue(), frontend::Angled, false, true); 3093 } 3094 3095 for (const auto *A : Args.filtered(OPT_idirafter)) 3096 Opts.AddPath(A->getValue(), frontend::After, false, true); 3097 for (const auto *A : Args.filtered(OPT_iquote)) 3098 Opts.AddPath(A->getValue(), frontend::Quoted, false, true); 3099 for (const auto *A : Args.filtered(OPT_isystem, OPT_iwithsysroot)) 3100 Opts.AddPath(A->getValue(), frontend::System, false, 3101 !A->getOption().matches(OPT_iwithsysroot)); 3102 for (const auto *A : Args.filtered(OPT_iframework)) 3103 Opts.AddPath(A->getValue(), frontend::System, true, true); 3104 for (const auto *A : Args.filtered(OPT_iframeworkwithsysroot)) 3105 Opts.AddPath(A->getValue(), frontend::System, /*IsFramework=*/true, 3106 /*IgnoreSysRoot=*/false); 3107 3108 // Add the paths for the various language specific isystem flags. 3109 for (const auto *A : Args.filtered(OPT_c_isystem)) 3110 Opts.AddPath(A->getValue(), frontend::CSystem, false, true); 3111 for (const auto *A : Args.filtered(OPT_cxx_isystem)) 3112 Opts.AddPath(A->getValue(), frontend::CXXSystem, false, true); 3113 for (const auto *A : Args.filtered(OPT_objc_isystem)) 3114 Opts.AddPath(A->getValue(), frontend::ObjCSystem, false,true); 3115 for (const auto *A : Args.filtered(OPT_objcxx_isystem)) 3116 Opts.AddPath(A->getValue(), frontend::ObjCXXSystem, false, true); 3117 3118 // Add the internal paths from a driver that detects standard include paths. 3119 for (const auto *A : 3120 Args.filtered(OPT_internal_isystem, OPT_internal_externc_isystem)) { 3121 frontend::IncludeDirGroup Group = frontend::System; 3122 if (A->getOption().matches(OPT_internal_externc_isystem)) 3123 Group = frontend::ExternCSystem; 3124 Opts.AddPath(A->getValue(), Group, false, true); 3125 } 3126 3127 // Add the path prefixes which are implicitly treated as being system headers. 3128 for (const auto *A : 3129 Args.filtered(OPT_system_header_prefix, OPT_no_system_header_prefix)) 3130 Opts.AddSystemHeaderPrefix( 3131 A->getValue(), A->getOption().matches(OPT_system_header_prefix)); 3132 3133 for (const auto *A : Args.filtered(OPT_ivfsoverlay)) 3134 Opts.AddVFSOverlayFile(A->getValue()); 3135 3136 return Diags.getNumErrors() == NumErrorsBefore; 3137 } 3138 3139 void CompilerInvocation::setLangDefaults(LangOptions &Opts, InputKind IK, 3140 const llvm::Triple &T, 3141 std::vector<std::string> &Includes, 3142 LangStandard::Kind LangStd) { 3143 // Set some properties which depend solely on the input kind; it would be nice 3144 // to move these to the language standard, and have the driver resolve the 3145 // input kind + language standard. 3146 // 3147 // FIXME: Perhaps a better model would be for a single source file to have 3148 // multiple language standards (C / C++ std, ObjC std, OpenCL std, OpenMP std) 3149 // simultaneously active? 3150 if (IK.getLanguage() == Language::Asm) { 3151 Opts.AsmPreprocessor = 1; 3152 } else if (IK.isObjectiveC()) { 3153 Opts.ObjC = 1; 3154 } 3155 3156 if (LangStd == LangStandard::lang_unspecified) { 3157 // Based on the base language, pick one. 3158 switch (IK.getLanguage()) { 3159 case Language::Unknown: 3160 case Language::LLVM_IR: 3161 llvm_unreachable("Invalid input kind!"); 3162 case Language::OpenCL: 3163 LangStd = LangStandard::lang_opencl12; 3164 break; 3165 case Language::OpenCLCXX: 3166 LangStd = LangStandard::lang_openclcpp10; 3167 break; 3168 case Language::CUDA: 3169 LangStd = LangStandard::lang_cuda; 3170 break; 3171 case Language::Asm: 3172 case Language::C: 3173 #if defined(CLANG_DEFAULT_STD_C) 3174 LangStd = CLANG_DEFAULT_STD_C; 3175 #else 3176 // The PS4 uses C99 as the default C standard. 3177 if (T.isPS4()) 3178 LangStd = LangStandard::lang_gnu99; 3179 else 3180 LangStd = LangStandard::lang_gnu17; 3181 #endif 3182 break; 3183 case Language::ObjC: 3184 #if defined(CLANG_DEFAULT_STD_C) 3185 LangStd = CLANG_DEFAULT_STD_C; 3186 #else 3187 LangStd = LangStandard::lang_gnu11; 3188 #endif 3189 break; 3190 case Language::CXX: 3191 case Language::ObjCXX: 3192 #if defined(CLANG_DEFAULT_STD_CXX) 3193 LangStd = CLANG_DEFAULT_STD_CXX; 3194 #else 3195 LangStd = LangStandard::lang_gnucxx14; 3196 #endif 3197 break; 3198 case Language::RenderScript: 3199 LangStd = LangStandard::lang_c99; 3200 break; 3201 case Language::HIP: 3202 LangStd = LangStandard::lang_hip; 3203 break; 3204 } 3205 } 3206 3207 const LangStandard &Std = LangStandard::getLangStandardForKind(LangStd); 3208 Opts.LangStd = LangStd; 3209 Opts.LineComment = Std.hasLineComments(); 3210 Opts.C99 = Std.isC99(); 3211 Opts.C11 = Std.isC11(); 3212 Opts.C17 = Std.isC17(); 3213 Opts.C2x = Std.isC2x(); 3214 Opts.CPlusPlus = Std.isCPlusPlus(); 3215 Opts.CPlusPlus11 = Std.isCPlusPlus11(); 3216 Opts.CPlusPlus14 = Std.isCPlusPlus14(); 3217 Opts.CPlusPlus17 = Std.isCPlusPlus17(); 3218 Opts.CPlusPlus20 = Std.isCPlusPlus20(); 3219 Opts.CPlusPlus2b = Std.isCPlusPlus2b(); 3220 Opts.GNUMode = Std.isGNUMode(); 3221 Opts.GNUCVersion = 0; 3222 Opts.HexFloats = Std.hasHexFloats(); 3223 Opts.ImplicitInt = Std.hasImplicitInt(); 3224 3225 // Set OpenCL Version. 3226 Opts.OpenCL = Std.isOpenCL(); 3227 if (LangStd == LangStandard::lang_opencl10) 3228 Opts.OpenCLVersion = 100; 3229 else if (LangStd == LangStandard::lang_opencl11) 3230 Opts.OpenCLVersion = 110; 3231 else if (LangStd == LangStandard::lang_opencl12) 3232 Opts.OpenCLVersion = 120; 3233 else if (LangStd == LangStandard::lang_opencl20) 3234 Opts.OpenCLVersion = 200; 3235 else if (LangStd == LangStandard::lang_opencl30) 3236 Opts.OpenCLVersion = 300; 3237 else if (LangStd == LangStandard::lang_openclcpp10) 3238 Opts.OpenCLCPlusPlusVersion = 100; 3239 else if (LangStd == LangStandard::lang_openclcpp2021) 3240 Opts.OpenCLCPlusPlusVersion = 202100; 3241 3242 // OpenCL has some additional defaults. 3243 if (Opts.OpenCL) { 3244 Opts.AltiVec = 0; 3245 Opts.ZVector = 0; 3246 Opts.setDefaultFPContractMode(LangOptions::FPM_On); 3247 Opts.OpenCLCPlusPlus = Opts.CPlusPlus; 3248 Opts.OpenCLPipes = Opts.getOpenCLCompatibleVersion() == 200; 3249 Opts.OpenCLGenericAddressSpace = Opts.getOpenCLCompatibleVersion() == 200; 3250 3251 // Include default header file for OpenCL. 3252 if (Opts.IncludeDefaultHeader) { 3253 if (Opts.DeclareOpenCLBuiltins) { 3254 // Only include base header file for builtin types and constants. 3255 Includes.push_back("opencl-c-base.h"); 3256 } else { 3257 Includes.push_back("opencl-c.h"); 3258 } 3259 } 3260 } 3261 3262 Opts.HIP = IK.getLanguage() == Language::HIP; 3263 Opts.CUDA = IK.getLanguage() == Language::CUDA || Opts.HIP; 3264 if (Opts.HIP) { 3265 // HIP toolchain does not support 'Fast' FPOpFusion in backends since it 3266 // fuses multiplication/addition instructions without contract flag from 3267 // device library functions in LLVM bitcode, which causes accuracy loss in 3268 // certain math functions, e.g. tan(-1e20) becomes -0.933 instead of 0.8446. 3269 // For device library functions in bitcode to work, 'Strict' or 'Standard' 3270 // FPOpFusion options in backends is needed. Therefore 'fast-honor-pragmas' 3271 // FP contract option is used to allow fuse across statements in frontend 3272 // whereas respecting contract flag in backend. 3273 Opts.setDefaultFPContractMode(LangOptions::FPM_FastHonorPragmas); 3274 } else if (Opts.CUDA) { 3275 // Allow fuse across statements disregarding pragmas. 3276 Opts.setDefaultFPContractMode(LangOptions::FPM_Fast); 3277 } 3278 3279 Opts.RenderScript = IK.getLanguage() == Language::RenderScript; 3280 3281 // OpenCL, C++ and C2x have bool, true, false keywords. 3282 Opts.Bool = Opts.OpenCL || Opts.CPlusPlus || Opts.C2x; 3283 3284 // OpenCL has half keyword 3285 Opts.Half = Opts.OpenCL; 3286 } 3287 3288 /// Check if input file kind and language standard are compatible. 3289 static bool IsInputCompatibleWithStandard(InputKind IK, 3290 const LangStandard &S) { 3291 switch (IK.getLanguage()) { 3292 case Language::Unknown: 3293 case Language::LLVM_IR: 3294 llvm_unreachable("should not parse language flags for this input"); 3295 3296 case Language::C: 3297 case Language::ObjC: 3298 case Language::RenderScript: 3299 return S.getLanguage() == Language::C; 3300 3301 case Language::OpenCL: 3302 return S.getLanguage() == Language::OpenCL || 3303 S.getLanguage() == Language::OpenCLCXX; 3304 3305 case Language::OpenCLCXX: 3306 return S.getLanguage() == Language::OpenCLCXX; 3307 3308 case Language::CXX: 3309 case Language::ObjCXX: 3310 return S.getLanguage() == Language::CXX; 3311 3312 case Language::CUDA: 3313 // FIXME: What -std= values should be permitted for CUDA compilations? 3314 return S.getLanguage() == Language::CUDA || 3315 S.getLanguage() == Language::CXX; 3316 3317 case Language::HIP: 3318 return S.getLanguage() == Language::CXX || S.getLanguage() == Language::HIP; 3319 3320 case Language::Asm: 3321 // Accept (and ignore) all -std= values. 3322 // FIXME: The -std= value is not ignored; it affects the tokenization 3323 // and preprocessing rules if we're preprocessing this asm input. 3324 return true; 3325 } 3326 3327 llvm_unreachable("unexpected input language"); 3328 } 3329 3330 /// Get language name for given input kind. 3331 static StringRef GetInputKindName(InputKind IK) { 3332 switch (IK.getLanguage()) { 3333 case Language::C: 3334 return "C"; 3335 case Language::ObjC: 3336 return "Objective-C"; 3337 case Language::CXX: 3338 return "C++"; 3339 case Language::ObjCXX: 3340 return "Objective-C++"; 3341 case Language::OpenCL: 3342 return "OpenCL"; 3343 case Language::OpenCLCXX: 3344 return "C++ for OpenCL"; 3345 case Language::CUDA: 3346 return "CUDA"; 3347 case Language::RenderScript: 3348 return "RenderScript"; 3349 case Language::HIP: 3350 return "HIP"; 3351 3352 case Language::Asm: 3353 return "Asm"; 3354 case Language::LLVM_IR: 3355 return "LLVM IR"; 3356 3357 case Language::Unknown: 3358 break; 3359 } 3360 llvm_unreachable("unknown input language"); 3361 } 3362 3363 void CompilerInvocation::GenerateLangArgs(const LangOptions &Opts, 3364 SmallVectorImpl<const char *> &Args, 3365 StringAllocator SA, 3366 const llvm::Triple &T, InputKind IK) { 3367 if (IK.getFormat() == InputKind::Precompiled || 3368 IK.getLanguage() == Language::LLVM_IR) { 3369 if (Opts.ObjCAutoRefCount) 3370 GenerateArg(Args, OPT_fobjc_arc, SA); 3371 if (Opts.PICLevel != 0) 3372 GenerateArg(Args, OPT_pic_level, Twine(Opts.PICLevel), SA); 3373 if (Opts.PIE) 3374 GenerateArg(Args, OPT_pic_is_pie, SA); 3375 for (StringRef Sanitizer : serializeSanitizerKinds(Opts.Sanitize)) 3376 GenerateArg(Args, OPT_fsanitize_EQ, Sanitizer, SA); 3377 3378 return; 3379 } 3380 3381 OptSpecifier StdOpt; 3382 switch (Opts.LangStd) { 3383 case LangStandard::lang_opencl10: 3384 case LangStandard::lang_opencl11: 3385 case LangStandard::lang_opencl12: 3386 case LangStandard::lang_opencl20: 3387 case LangStandard::lang_opencl30: 3388 case LangStandard::lang_openclcpp10: 3389 case LangStandard::lang_openclcpp2021: 3390 StdOpt = OPT_cl_std_EQ; 3391 break; 3392 default: 3393 StdOpt = OPT_std_EQ; 3394 break; 3395 } 3396 3397 auto LangStandard = LangStandard::getLangStandardForKind(Opts.LangStd); 3398 GenerateArg(Args, StdOpt, LangStandard.getName(), SA); 3399 3400 if (Opts.IncludeDefaultHeader) 3401 GenerateArg(Args, OPT_finclude_default_header, SA); 3402 if (Opts.DeclareOpenCLBuiltins) 3403 GenerateArg(Args, OPT_fdeclare_opencl_builtins, SA); 3404 3405 const LangOptions *LangOpts = &Opts; 3406 3407 #define LANG_OPTION_WITH_MARSHALLING( \ 3408 PREFIX_TYPE, NAME, ID, KIND, GROUP, ALIAS, ALIASARGS, FLAGS, PARAM, \ 3409 HELPTEXT, METAVAR, VALUES, SPELLING, SHOULD_PARSE, ALWAYS_EMIT, KEYPATH, \ 3410 DEFAULT_VALUE, IMPLIED_CHECK, IMPLIED_VALUE, NORMALIZER, DENORMALIZER, \ 3411 MERGER, EXTRACTOR, TABLE_INDEX) \ 3412 GENERATE_OPTION_WITH_MARSHALLING( \ 3413 Args, SA, KIND, FLAGS, SPELLING, ALWAYS_EMIT, KEYPATH, DEFAULT_VALUE, \ 3414 IMPLIED_CHECK, IMPLIED_VALUE, DENORMALIZER, EXTRACTOR, TABLE_INDEX) 3415 #include "clang/Driver/Options.inc" 3416 #undef LANG_OPTION_WITH_MARSHALLING 3417 3418 // The '-fcf-protection=' option is generated by CodeGenOpts generator. 3419 3420 if (Opts.ObjC) { 3421 GenerateArg(Args, OPT_fobjc_runtime_EQ, Opts.ObjCRuntime.getAsString(), SA); 3422 3423 if (Opts.GC == LangOptions::GCOnly) 3424 GenerateArg(Args, OPT_fobjc_gc_only, SA); 3425 else if (Opts.GC == LangOptions::HybridGC) 3426 GenerateArg(Args, OPT_fobjc_gc, SA); 3427 else if (Opts.ObjCAutoRefCount == 1) 3428 GenerateArg(Args, OPT_fobjc_arc, SA); 3429 3430 if (Opts.ObjCWeakRuntime) 3431 GenerateArg(Args, OPT_fobjc_runtime_has_weak, SA); 3432 3433 if (Opts.ObjCWeak) 3434 GenerateArg(Args, OPT_fobjc_weak, SA); 3435 3436 if (Opts.ObjCSubscriptingLegacyRuntime) 3437 GenerateArg(Args, OPT_fobjc_subscripting_legacy_runtime, SA); 3438 } 3439 3440 if (Opts.GNUCVersion != 0) { 3441 unsigned Major = Opts.GNUCVersion / 100 / 100; 3442 unsigned Minor = (Opts.GNUCVersion / 100) % 100; 3443 unsigned Patch = Opts.GNUCVersion % 100; 3444 GenerateArg(Args, OPT_fgnuc_version_EQ, 3445 Twine(Major) + "." + Twine(Minor) + "." + Twine(Patch), SA); 3446 } 3447 3448 if (Opts.IgnoreXCOFFVisibility) 3449 GenerateArg(Args, OPT_mignore_xcoff_visibility, SA); 3450 3451 if (Opts.SignedOverflowBehavior == LangOptions::SOB_Trapping) { 3452 GenerateArg(Args, OPT_ftrapv, SA); 3453 GenerateArg(Args, OPT_ftrapv_handler, Opts.OverflowHandler, SA); 3454 } else if (Opts.SignedOverflowBehavior == LangOptions::SOB_Defined) { 3455 GenerateArg(Args, OPT_fwrapv, SA); 3456 } 3457 3458 if (Opts.MSCompatibilityVersion != 0) { 3459 unsigned Major = Opts.MSCompatibilityVersion / 10000000; 3460 unsigned Minor = (Opts.MSCompatibilityVersion / 100000) % 100; 3461 unsigned Subminor = Opts.MSCompatibilityVersion % 100000; 3462 GenerateArg(Args, OPT_fms_compatibility_version, 3463 Twine(Major) + "." + Twine(Minor) + "." + Twine(Subminor), SA); 3464 } 3465 3466 if ((!Opts.GNUMode && !Opts.MSVCCompat && !Opts.CPlusPlus17) || T.isOSzOS()) { 3467 if (!Opts.Trigraphs) 3468 GenerateArg(Args, OPT_fno_trigraphs, SA); 3469 } else { 3470 if (Opts.Trigraphs) 3471 GenerateArg(Args, OPT_ftrigraphs, SA); 3472 } 3473 3474 if (Opts.Blocks && !(Opts.OpenCL && Opts.OpenCLVersion == 200)) 3475 GenerateArg(Args, OPT_fblocks, SA); 3476 3477 if (Opts.ConvergentFunctions && 3478 !(Opts.OpenCL || (Opts.CUDA && Opts.CUDAIsDevice) || Opts.SYCLIsDevice)) 3479 GenerateArg(Args, OPT_fconvergent_functions, SA); 3480 3481 if (Opts.NoBuiltin && !Opts.Freestanding) 3482 GenerateArg(Args, OPT_fno_builtin, SA); 3483 3484 if (!Opts.NoBuiltin) 3485 for (const auto &Func : Opts.NoBuiltinFuncs) 3486 GenerateArg(Args, OPT_fno_builtin_, Func, SA); 3487 3488 if (Opts.LongDoubleSize == 128) 3489 GenerateArg(Args, OPT_mlong_double_128, SA); 3490 else if (Opts.LongDoubleSize == 64) 3491 GenerateArg(Args, OPT_mlong_double_64, SA); 3492 else if (Opts.LongDoubleSize == 80) 3493 GenerateArg(Args, OPT_mlong_double_80, SA); 3494 3495 // Not generating '-mrtd', it's just an alias for '-fdefault-calling-conv='. 3496 3497 // OpenMP was requested via '-fopenmp', not implied by '-fopenmp-simd' or 3498 // '-fopenmp-targets='. 3499 if (Opts.OpenMP && !Opts.OpenMPSimd) { 3500 GenerateArg(Args, OPT_fopenmp, SA); 3501 3502 if (Opts.OpenMP != 50) 3503 GenerateArg(Args, OPT_fopenmp_version_EQ, Twine(Opts.OpenMP), SA); 3504 3505 if (!Opts.OpenMPUseTLS) 3506 GenerateArg(Args, OPT_fnoopenmp_use_tls, SA); 3507 3508 if (Opts.OpenMPIsDevice) 3509 GenerateArg(Args, OPT_fopenmp_is_device, SA); 3510 3511 if (Opts.OpenMPIRBuilder) 3512 GenerateArg(Args, OPT_fopenmp_enable_irbuilder, SA); 3513 } 3514 3515 if (Opts.OpenMPSimd) { 3516 GenerateArg(Args, OPT_fopenmp_simd, SA); 3517 3518 if (Opts.OpenMP != 50) 3519 GenerateArg(Args, OPT_fopenmp_version_EQ, Twine(Opts.OpenMP), SA); 3520 } 3521 3522 if (Opts.OpenMPThreadSubscription) 3523 GenerateArg(Args, OPT_fopenmp_assume_threads_oversubscription, SA); 3524 3525 if (Opts.OpenMPTeamSubscription) 3526 GenerateArg(Args, OPT_fopenmp_assume_teams_oversubscription, SA); 3527 3528 if (Opts.OpenMPTargetDebug != 0) 3529 GenerateArg(Args, OPT_fopenmp_target_debug_EQ, 3530 Twine(Opts.OpenMPTargetDebug), SA); 3531 3532 if (Opts.OpenMPCUDANumSMs != 0) 3533 GenerateArg(Args, OPT_fopenmp_cuda_number_of_sm_EQ, 3534 Twine(Opts.OpenMPCUDANumSMs), SA); 3535 3536 if (Opts.OpenMPCUDABlocksPerSM != 0) 3537 GenerateArg(Args, OPT_fopenmp_cuda_blocks_per_sm_EQ, 3538 Twine(Opts.OpenMPCUDABlocksPerSM), SA); 3539 3540 if (Opts.OpenMPCUDAReductionBufNum != 1024) 3541 GenerateArg(Args, OPT_fopenmp_cuda_teams_reduction_recs_num_EQ, 3542 Twine(Opts.OpenMPCUDAReductionBufNum), SA); 3543 3544 if (!Opts.OMPTargetTriples.empty()) { 3545 std::string Targets; 3546 llvm::raw_string_ostream OS(Targets); 3547 llvm::interleave( 3548 Opts.OMPTargetTriples, OS, 3549 [&OS](const llvm::Triple &T) { OS << T.str(); }, ","); 3550 GenerateArg(Args, OPT_fopenmp_targets_EQ, OS.str(), SA); 3551 } 3552 3553 if (!Opts.OMPHostIRFile.empty()) 3554 GenerateArg(Args, OPT_fopenmp_host_ir_file_path, Opts.OMPHostIRFile, SA); 3555 3556 if (Opts.OpenMPCUDAMode) 3557 GenerateArg(Args, OPT_fopenmp_cuda_mode, SA); 3558 3559 if (Opts.OpenMPCUDAForceFullRuntime) 3560 GenerateArg(Args, OPT_fopenmp_cuda_force_full_runtime, SA); 3561 3562 // The arguments used to set Optimize, OptimizeSize and NoInlineDefine are 3563 // generated from CodeGenOptions. 3564 3565 if (Opts.DefaultFPContractMode == LangOptions::FPM_Fast) 3566 GenerateArg(Args, OPT_ffp_contract, "fast", SA); 3567 else if (Opts.DefaultFPContractMode == LangOptions::FPM_On) 3568 GenerateArg(Args, OPT_ffp_contract, "on", SA); 3569 else if (Opts.DefaultFPContractMode == LangOptions::FPM_Off) 3570 GenerateArg(Args, OPT_ffp_contract, "off", SA); 3571 else if (Opts.DefaultFPContractMode == LangOptions::FPM_FastHonorPragmas) 3572 GenerateArg(Args, OPT_ffp_contract, "fast-honor-pragmas", SA); 3573 3574 for (StringRef Sanitizer : serializeSanitizerKinds(Opts.Sanitize)) 3575 GenerateArg(Args, OPT_fsanitize_EQ, Sanitizer, SA); 3576 3577 // Conflating '-fsanitize-system-ignorelist' and '-fsanitize-ignorelist'. 3578 for (const std::string &F : Opts.NoSanitizeFiles) 3579 GenerateArg(Args, OPT_fsanitize_ignorelist_EQ, F, SA); 3580 3581 if (Opts.getClangABICompat() == LangOptions::ClangABI::Ver3_8) 3582 GenerateArg(Args, OPT_fclang_abi_compat_EQ, "3.8", SA); 3583 else if (Opts.getClangABICompat() == LangOptions::ClangABI::Ver4) 3584 GenerateArg(Args, OPT_fclang_abi_compat_EQ, "4.0", SA); 3585 else if (Opts.getClangABICompat() == LangOptions::ClangABI::Ver6) 3586 GenerateArg(Args, OPT_fclang_abi_compat_EQ, "6.0", SA); 3587 else if (Opts.getClangABICompat() == LangOptions::ClangABI::Ver7) 3588 GenerateArg(Args, OPT_fclang_abi_compat_EQ, "7.0", SA); 3589 else if (Opts.getClangABICompat() == LangOptions::ClangABI::Ver9) 3590 GenerateArg(Args, OPT_fclang_abi_compat_EQ, "9.0", SA); 3591 else if (Opts.getClangABICompat() == LangOptions::ClangABI::Ver11) 3592 GenerateArg(Args, OPT_fclang_abi_compat_EQ, "11.0", SA); 3593 else if (Opts.getClangABICompat() == LangOptions::ClangABI::Ver12) 3594 GenerateArg(Args, OPT_fclang_abi_compat_EQ, "12.0", SA); 3595 else if (Opts.getClangABICompat() == LangOptions::ClangABI::Ver13) 3596 GenerateArg(Args, OPT_fclang_abi_compat_EQ, "13.0", SA); 3597 3598 if (Opts.getSignReturnAddressScope() == 3599 LangOptions::SignReturnAddressScopeKind::All) 3600 GenerateArg(Args, OPT_msign_return_address_EQ, "all", SA); 3601 else if (Opts.getSignReturnAddressScope() == 3602 LangOptions::SignReturnAddressScopeKind::NonLeaf) 3603 GenerateArg(Args, OPT_msign_return_address_EQ, "non-leaf", SA); 3604 3605 if (Opts.getSignReturnAddressKey() == 3606 LangOptions::SignReturnAddressKeyKind::BKey) 3607 GenerateArg(Args, OPT_msign_return_address_key_EQ, "b_key", SA); 3608 3609 if (Opts.CXXABI) 3610 GenerateArg(Args, OPT_fcxx_abi_EQ, TargetCXXABI::getSpelling(*Opts.CXXABI), 3611 SA); 3612 3613 if (Opts.RelativeCXXABIVTables) 3614 GenerateArg(Args, OPT_fexperimental_relative_cxx_abi_vtables, SA); 3615 else 3616 GenerateArg(Args, OPT_fno_experimental_relative_cxx_abi_vtables, SA); 3617 3618 for (const auto &MP : Opts.MacroPrefixMap) 3619 GenerateArg(Args, OPT_fmacro_prefix_map_EQ, MP.first + "=" + MP.second, SA); 3620 } 3621 3622 bool CompilerInvocation::ParseLangArgs(LangOptions &Opts, ArgList &Args, 3623 InputKind IK, const llvm::Triple &T, 3624 std::vector<std::string> &Includes, 3625 DiagnosticsEngine &Diags) { 3626 unsigned NumErrorsBefore = Diags.getNumErrors(); 3627 3628 if (IK.getFormat() == InputKind::Precompiled || 3629 IK.getLanguage() == Language::LLVM_IR) { 3630 // ObjCAAutoRefCount and Sanitize LangOpts are used to setup the 3631 // PassManager in BackendUtil.cpp. They need to be initialized no matter 3632 // what the input type is. 3633 if (Args.hasArg(OPT_fobjc_arc)) 3634 Opts.ObjCAutoRefCount = 1; 3635 // PICLevel and PIELevel are needed during code generation and this should 3636 // be set regardless of the input type. 3637 Opts.PICLevel = getLastArgIntValue(Args, OPT_pic_level, 0, Diags); 3638 Opts.PIE = Args.hasArg(OPT_pic_is_pie); 3639 parseSanitizerKinds("-fsanitize=", Args.getAllArgValues(OPT_fsanitize_EQ), 3640 Diags, Opts.Sanitize); 3641 3642 return Diags.getNumErrors() == NumErrorsBefore; 3643 } 3644 3645 // Other LangOpts are only initialized when the input is not AST or LLVM IR. 3646 // FIXME: Should we really be parsing this for an Language::Asm input? 3647 3648 // FIXME: Cleanup per-file based stuff. 3649 LangStandard::Kind LangStd = LangStandard::lang_unspecified; 3650 if (const Arg *A = Args.getLastArg(OPT_std_EQ)) { 3651 LangStd = LangStandard::getLangKind(A->getValue()); 3652 if (LangStd == LangStandard::lang_unspecified) { 3653 Diags.Report(diag::err_drv_invalid_value) 3654 << A->getAsString(Args) << A->getValue(); 3655 // Report supported standards with short description. 3656 for (unsigned KindValue = 0; 3657 KindValue != LangStandard::lang_unspecified; 3658 ++KindValue) { 3659 const LangStandard &Std = LangStandard::getLangStandardForKind( 3660 static_cast<LangStandard::Kind>(KindValue)); 3661 if (IsInputCompatibleWithStandard(IK, Std)) { 3662 auto Diag = Diags.Report(diag::note_drv_use_standard); 3663 Diag << Std.getName() << Std.getDescription(); 3664 unsigned NumAliases = 0; 3665 #define LANGSTANDARD(id, name, lang, desc, features) 3666 #define LANGSTANDARD_ALIAS(id, alias) \ 3667 if (KindValue == LangStandard::lang_##id) ++NumAliases; 3668 #define LANGSTANDARD_ALIAS_DEPR(id, alias) 3669 #include "clang/Basic/LangStandards.def" 3670 Diag << NumAliases; 3671 #define LANGSTANDARD(id, name, lang, desc, features) 3672 #define LANGSTANDARD_ALIAS(id, alias) \ 3673 if (KindValue == LangStandard::lang_##id) Diag << alias; 3674 #define LANGSTANDARD_ALIAS_DEPR(id, alias) 3675 #include "clang/Basic/LangStandards.def" 3676 } 3677 } 3678 } else { 3679 // Valid standard, check to make sure language and standard are 3680 // compatible. 3681 const LangStandard &Std = LangStandard::getLangStandardForKind(LangStd); 3682 if (!IsInputCompatibleWithStandard(IK, Std)) { 3683 Diags.Report(diag::err_drv_argument_not_allowed_with) 3684 << A->getAsString(Args) << GetInputKindName(IK); 3685 } 3686 } 3687 } 3688 3689 // -cl-std only applies for OpenCL language standards. 3690 // Override the -std option in this case. 3691 if (const Arg *A = Args.getLastArg(OPT_cl_std_EQ)) { 3692 LangStandard::Kind OpenCLLangStd 3693 = llvm::StringSwitch<LangStandard::Kind>(A->getValue()) 3694 .Cases("cl", "CL", LangStandard::lang_opencl10) 3695 .Cases("cl1.0", "CL1.0", LangStandard::lang_opencl10) 3696 .Cases("cl1.1", "CL1.1", LangStandard::lang_opencl11) 3697 .Cases("cl1.2", "CL1.2", LangStandard::lang_opencl12) 3698 .Cases("cl2.0", "CL2.0", LangStandard::lang_opencl20) 3699 .Cases("cl3.0", "CL3.0", LangStandard::lang_opencl30) 3700 .Cases("clc++", "CLC++", LangStandard::lang_openclcpp10) 3701 .Cases("clc++1.0", "CLC++1.0", LangStandard::lang_openclcpp10) 3702 .Cases("clc++2021", "CLC++2021", LangStandard::lang_openclcpp2021) 3703 .Default(LangStandard::lang_unspecified); 3704 3705 if (OpenCLLangStd == LangStandard::lang_unspecified) { 3706 Diags.Report(diag::err_drv_invalid_value) 3707 << A->getAsString(Args) << A->getValue(); 3708 } 3709 else 3710 LangStd = OpenCLLangStd; 3711 } 3712 3713 // These need to be parsed now. They are used to set OpenCL defaults. 3714 Opts.IncludeDefaultHeader = Args.hasArg(OPT_finclude_default_header); 3715 Opts.DeclareOpenCLBuiltins = Args.hasArg(OPT_fdeclare_opencl_builtins); 3716 3717 CompilerInvocation::setLangDefaults(Opts, IK, T, Includes, LangStd); 3718 3719 // The key paths of codegen options defined in Options.td start with 3720 // "LangOpts->". Let's provide the expected variable name and type. 3721 LangOptions *LangOpts = &Opts; 3722 3723 #define LANG_OPTION_WITH_MARSHALLING( \ 3724 PREFIX_TYPE, NAME, ID, KIND, GROUP, ALIAS, ALIASARGS, FLAGS, PARAM, \ 3725 HELPTEXT, METAVAR, VALUES, SPELLING, SHOULD_PARSE, ALWAYS_EMIT, KEYPATH, \ 3726 DEFAULT_VALUE, IMPLIED_CHECK, IMPLIED_VALUE, NORMALIZER, DENORMALIZER, \ 3727 MERGER, EXTRACTOR, TABLE_INDEX) \ 3728 PARSE_OPTION_WITH_MARSHALLING( \ 3729 Args, Diags, ID, FLAGS, PARAM, SHOULD_PARSE, KEYPATH, DEFAULT_VALUE, \ 3730 IMPLIED_CHECK, IMPLIED_VALUE, NORMALIZER, MERGER, TABLE_INDEX) 3731 #include "clang/Driver/Options.inc" 3732 #undef LANG_OPTION_WITH_MARSHALLING 3733 3734 if (const Arg *A = Args.getLastArg(OPT_fcf_protection_EQ)) { 3735 StringRef Name = A->getValue(); 3736 if (Name == "full" || Name == "branch") { 3737 Opts.CFProtectionBranch = 1; 3738 } 3739 } 3740 3741 if ((Args.hasArg(OPT_fsycl_is_device) || Args.hasArg(OPT_fsycl_is_host)) && 3742 !Args.hasArg(OPT_sycl_std_EQ)) { 3743 // If the user supplied -fsycl-is-device or -fsycl-is-host, but failed to 3744 // provide -sycl-std=, we want to default it to whatever the default SYCL 3745 // version is. I could not find a way to express this with the options 3746 // tablegen because we still want this value to be SYCL_None when the user 3747 // is not in device or host mode. 3748 Opts.setSYCLVersion(LangOptions::SYCL_Default); 3749 } 3750 3751 if (Opts.ObjC) { 3752 if (Arg *arg = Args.getLastArg(OPT_fobjc_runtime_EQ)) { 3753 StringRef value = arg->getValue(); 3754 if (Opts.ObjCRuntime.tryParse(value)) 3755 Diags.Report(diag::err_drv_unknown_objc_runtime) << value; 3756 } 3757 3758 if (Args.hasArg(OPT_fobjc_gc_only)) 3759 Opts.setGC(LangOptions::GCOnly); 3760 else if (Args.hasArg(OPT_fobjc_gc)) 3761 Opts.setGC(LangOptions::HybridGC); 3762 else if (Args.hasArg(OPT_fobjc_arc)) { 3763 Opts.ObjCAutoRefCount = 1; 3764 if (!Opts.ObjCRuntime.allowsARC()) 3765 Diags.Report(diag::err_arc_unsupported_on_runtime); 3766 } 3767 3768 // ObjCWeakRuntime tracks whether the runtime supports __weak, not 3769 // whether the feature is actually enabled. This is predominantly 3770 // determined by -fobjc-runtime, but we allow it to be overridden 3771 // from the command line for testing purposes. 3772 if (Args.hasArg(OPT_fobjc_runtime_has_weak)) 3773 Opts.ObjCWeakRuntime = 1; 3774 else 3775 Opts.ObjCWeakRuntime = Opts.ObjCRuntime.allowsWeak(); 3776 3777 // ObjCWeak determines whether __weak is actually enabled. 3778 // Note that we allow -fno-objc-weak to disable this even in ARC mode. 3779 if (auto weakArg = Args.getLastArg(OPT_fobjc_weak, OPT_fno_objc_weak)) { 3780 if (!weakArg->getOption().matches(OPT_fobjc_weak)) { 3781 assert(!Opts.ObjCWeak); 3782 } else if (Opts.getGC() != LangOptions::NonGC) { 3783 Diags.Report(diag::err_objc_weak_with_gc); 3784 } else if (!Opts.ObjCWeakRuntime) { 3785 Diags.Report(diag::err_objc_weak_unsupported); 3786 } else { 3787 Opts.ObjCWeak = 1; 3788 } 3789 } else if (Opts.ObjCAutoRefCount) { 3790 Opts.ObjCWeak = Opts.ObjCWeakRuntime; 3791 } 3792 3793 if (Args.hasArg(OPT_fobjc_subscripting_legacy_runtime)) 3794 Opts.ObjCSubscriptingLegacyRuntime = 3795 (Opts.ObjCRuntime.getKind() == ObjCRuntime::FragileMacOSX); 3796 } 3797 3798 if (Arg *A = Args.getLastArg(options::OPT_fgnuc_version_EQ)) { 3799 // Check that the version has 1 to 3 components and the minor and patch 3800 // versions fit in two decimal digits. 3801 VersionTuple GNUCVer; 3802 bool Invalid = GNUCVer.tryParse(A->getValue()); 3803 unsigned Major = GNUCVer.getMajor(); 3804 unsigned Minor = GNUCVer.getMinor().getValueOr(0); 3805 unsigned Patch = GNUCVer.getSubminor().getValueOr(0); 3806 if (Invalid || GNUCVer.getBuild() || Minor >= 100 || Patch >= 100) { 3807 Diags.Report(diag::err_drv_invalid_value) 3808 << A->getAsString(Args) << A->getValue(); 3809 } 3810 Opts.GNUCVersion = Major * 100 * 100 + Minor * 100 + Patch; 3811 } 3812 3813 // In AIX OS, the -mignore-xcoff-visibility is enable by default if there is 3814 // no -fvisibility=* option. 3815 // This is the reason why '-fvisibility' needs to be always generated: 3816 // its absence implies '-mignore-xcoff-visibility'. 3817 // 3818 // Suppose the original cc1 command line does contain '-fvisibility default': 3819 // '-mignore-xcoff-visibility' should not be implied. 3820 // * If '-fvisibility' is not generated (as most options with default values 3821 // don't), its absence would imply '-mignore-xcoff-visibility'. This changes 3822 // the command line semantics. 3823 // * If '-fvisibility' is generated regardless of its presence and value, 3824 // '-mignore-xcoff-visibility' won't be implied and the command line 3825 // semantics are kept intact. 3826 // 3827 // When the original cc1 command line does **not** contain '-fvisibility', 3828 // '-mignore-xcoff-visibility' is implied. The generated command line will 3829 // contain both '-fvisibility default' and '-mignore-xcoff-visibility' and 3830 // subsequent calls to `CreateFromArgs`/`generateCC1CommandLine` will always 3831 // produce the same arguments. 3832 3833 if (T.isOSAIX() && (Args.hasArg(OPT_mignore_xcoff_visibility) || 3834 !Args.hasArg(OPT_fvisibility))) 3835 Opts.IgnoreXCOFFVisibility = 1; 3836 3837 if (Args.hasArg(OPT_ftrapv)) { 3838 Opts.setSignedOverflowBehavior(LangOptions::SOB_Trapping); 3839 // Set the handler, if one is specified. 3840 Opts.OverflowHandler = 3841 std::string(Args.getLastArgValue(OPT_ftrapv_handler)); 3842 } 3843 else if (Args.hasArg(OPT_fwrapv)) 3844 Opts.setSignedOverflowBehavior(LangOptions::SOB_Defined); 3845 3846 Opts.MSCompatibilityVersion = 0; 3847 if (const Arg *A = Args.getLastArg(OPT_fms_compatibility_version)) { 3848 VersionTuple VT; 3849 if (VT.tryParse(A->getValue())) 3850 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) 3851 << A->getValue(); 3852 Opts.MSCompatibilityVersion = VT.getMajor() * 10000000 + 3853 VT.getMinor().getValueOr(0) * 100000 + 3854 VT.getSubminor().getValueOr(0); 3855 } 3856 3857 // Mimicking gcc's behavior, trigraphs are only enabled if -trigraphs 3858 // is specified, or -std is set to a conforming mode. 3859 // Trigraphs are disabled by default in c++1z onwards. 3860 // For z/OS, trigraphs are enabled by default (without regard to the above). 3861 Opts.Trigraphs = 3862 (!Opts.GNUMode && !Opts.MSVCCompat && !Opts.CPlusPlus17) || T.isOSzOS(); 3863 Opts.Trigraphs = 3864 Args.hasFlag(OPT_ftrigraphs, OPT_fno_trigraphs, Opts.Trigraphs); 3865 3866 Opts.Blocks = Args.hasArg(OPT_fblocks) || (Opts.OpenCL 3867 && Opts.OpenCLVersion == 200); 3868 3869 Opts.ConvergentFunctions = Opts.OpenCL || (Opts.CUDA && Opts.CUDAIsDevice) || 3870 Opts.SYCLIsDevice || 3871 Args.hasArg(OPT_fconvergent_functions); 3872 3873 Opts.NoBuiltin = Args.hasArg(OPT_fno_builtin) || Opts.Freestanding; 3874 if (!Opts.NoBuiltin) 3875 getAllNoBuiltinFuncValues(Args, Opts.NoBuiltinFuncs); 3876 if (Arg *A = Args.getLastArg(options::OPT_LongDouble_Group)) { 3877 if (A->getOption().matches(options::OPT_mlong_double_64)) 3878 Opts.LongDoubleSize = 64; 3879 else if (A->getOption().matches(options::OPT_mlong_double_80)) 3880 Opts.LongDoubleSize = 80; 3881 else if (A->getOption().matches(options::OPT_mlong_double_128)) 3882 Opts.LongDoubleSize = 128; 3883 else 3884 Opts.LongDoubleSize = 0; 3885 } 3886 if (Opts.FastRelaxedMath) 3887 Opts.setDefaultFPContractMode(LangOptions::FPM_Fast); 3888 llvm::sort(Opts.ModuleFeatures); 3889 3890 // -mrtd option 3891 if (Arg *A = Args.getLastArg(OPT_mrtd)) { 3892 if (Opts.getDefaultCallingConv() != LangOptions::DCC_None) 3893 Diags.Report(diag::err_drv_argument_not_allowed_with) 3894 << A->getSpelling() << "-fdefault-calling-conv"; 3895 else { 3896 if (T.getArch() != llvm::Triple::x86) 3897 Diags.Report(diag::err_drv_argument_not_allowed_with) 3898 << A->getSpelling() << T.getTriple(); 3899 else 3900 Opts.setDefaultCallingConv(LangOptions::DCC_StdCall); 3901 } 3902 } 3903 3904 // Check if -fopenmp is specified and set default version to 5.0. 3905 Opts.OpenMP = Args.hasArg(OPT_fopenmp) ? 50 : 0; 3906 // Check if -fopenmp-simd is specified. 3907 bool IsSimdSpecified = 3908 Args.hasFlag(options::OPT_fopenmp_simd, options::OPT_fno_openmp_simd, 3909 /*Default=*/false); 3910 Opts.OpenMPSimd = !Opts.OpenMP && IsSimdSpecified; 3911 Opts.OpenMPUseTLS = 3912 Opts.OpenMP && !Args.hasArg(options::OPT_fnoopenmp_use_tls); 3913 Opts.OpenMPIsDevice = 3914 Opts.OpenMP && Args.hasArg(options::OPT_fopenmp_is_device); 3915 Opts.OpenMPIRBuilder = 3916 Opts.OpenMP && Args.hasArg(options::OPT_fopenmp_enable_irbuilder); 3917 bool IsTargetSpecified = 3918 Opts.OpenMPIsDevice || Args.hasArg(options::OPT_fopenmp_targets_EQ); 3919 3920 Opts.ConvergentFunctions = Opts.ConvergentFunctions || Opts.OpenMPIsDevice; 3921 3922 if (Opts.OpenMP || Opts.OpenMPSimd) { 3923 if (int Version = getLastArgIntValue( 3924 Args, OPT_fopenmp_version_EQ, 3925 (IsSimdSpecified || IsTargetSpecified) ? 50 : Opts.OpenMP, Diags)) 3926 Opts.OpenMP = Version; 3927 // Provide diagnostic when a given target is not expected to be an OpenMP 3928 // device or host. 3929 if (!Opts.OpenMPIsDevice) { 3930 switch (T.getArch()) { 3931 default: 3932 break; 3933 // Add unsupported host targets here: 3934 case llvm::Triple::nvptx: 3935 case llvm::Triple::nvptx64: 3936 Diags.Report(diag::err_drv_omp_host_target_not_supported) << T.str(); 3937 break; 3938 } 3939 } 3940 } 3941 3942 // Set the flag to prevent the implementation from emitting device exception 3943 // handling code for those requiring so. 3944 if ((Opts.OpenMPIsDevice && (T.isNVPTX() || T.isAMDGCN())) || 3945 Opts.OpenCLCPlusPlus) { 3946 3947 Opts.Exceptions = 0; 3948 Opts.CXXExceptions = 0; 3949 } 3950 if (Opts.OpenMPIsDevice && T.isNVPTX()) { 3951 Opts.OpenMPCUDANumSMs = 3952 getLastArgIntValue(Args, options::OPT_fopenmp_cuda_number_of_sm_EQ, 3953 Opts.OpenMPCUDANumSMs, Diags); 3954 Opts.OpenMPCUDABlocksPerSM = 3955 getLastArgIntValue(Args, options::OPT_fopenmp_cuda_blocks_per_sm_EQ, 3956 Opts.OpenMPCUDABlocksPerSM, Diags); 3957 Opts.OpenMPCUDAReductionBufNum = getLastArgIntValue( 3958 Args, options::OPT_fopenmp_cuda_teams_reduction_recs_num_EQ, 3959 Opts.OpenMPCUDAReductionBufNum, Diags); 3960 } 3961 3962 // Set the value of the debugging flag used in the new offloading device RTL. 3963 // Set either by a specific value or to a default if not specified. 3964 if (Opts.OpenMPIsDevice && (Args.hasArg(OPT_fopenmp_target_debug) || 3965 Args.hasArg(OPT_fopenmp_target_debug_EQ))) { 3966 Opts.OpenMPTargetDebug = getLastArgIntValue( 3967 Args, OPT_fopenmp_target_debug_EQ, Opts.OpenMPTargetDebug, Diags); 3968 if (!Opts.OpenMPTargetDebug && Args.hasArg(OPT_fopenmp_target_debug)) 3969 Opts.OpenMPTargetDebug = 1; 3970 } 3971 3972 if (Opts.OpenMPIsDevice) { 3973 if (Args.hasArg(OPT_fopenmp_assume_teams_oversubscription)) 3974 Opts.OpenMPTeamSubscription = true; 3975 if (Args.hasArg(OPT_fopenmp_assume_threads_oversubscription)) 3976 Opts.OpenMPThreadSubscription = true; 3977 } 3978 3979 // Get the OpenMP target triples if any. 3980 if (Arg *A = Args.getLastArg(options::OPT_fopenmp_targets_EQ)) { 3981 enum ArchPtrSize { Arch16Bit, Arch32Bit, Arch64Bit }; 3982 auto getArchPtrSize = [](const llvm::Triple &T) { 3983 if (T.isArch16Bit()) 3984 return Arch16Bit; 3985 if (T.isArch32Bit()) 3986 return Arch32Bit; 3987 assert(T.isArch64Bit() && "Expected 64-bit architecture"); 3988 return Arch64Bit; 3989 }; 3990 3991 for (unsigned i = 0; i < A->getNumValues(); ++i) { 3992 llvm::Triple TT(A->getValue(i)); 3993 3994 if (TT.getArch() == llvm::Triple::UnknownArch || 3995 !(TT.getArch() == llvm::Triple::aarch64 || TT.isPPC() || 3996 TT.getArch() == llvm::Triple::nvptx || 3997 TT.getArch() == llvm::Triple::nvptx64 || 3998 TT.getArch() == llvm::Triple::amdgcn || 3999 TT.getArch() == llvm::Triple::x86 || 4000 TT.getArch() == llvm::Triple::x86_64)) 4001 Diags.Report(diag::err_drv_invalid_omp_target) << A->getValue(i); 4002 else if (getArchPtrSize(T) != getArchPtrSize(TT)) 4003 Diags.Report(diag::err_drv_incompatible_omp_arch) 4004 << A->getValue(i) << T.str(); 4005 else 4006 Opts.OMPTargetTriples.push_back(TT); 4007 } 4008 } 4009 4010 // Get OpenMP host file path if any and report if a non existent file is 4011 // found 4012 if (Arg *A = Args.getLastArg(options::OPT_fopenmp_host_ir_file_path)) { 4013 Opts.OMPHostIRFile = A->getValue(); 4014 if (!llvm::sys::fs::exists(Opts.OMPHostIRFile)) 4015 Diags.Report(diag::err_drv_omp_host_ir_file_not_found) 4016 << Opts.OMPHostIRFile; 4017 } 4018 4019 // Set CUDA mode for OpenMP target NVPTX/AMDGCN if specified in options 4020 Opts.OpenMPCUDAMode = Opts.OpenMPIsDevice && (T.isNVPTX() || T.isAMDGCN()) && 4021 Args.hasArg(options::OPT_fopenmp_cuda_mode); 4022 4023 // Set CUDA mode for OpenMP target NVPTX/AMDGCN if specified in options 4024 Opts.OpenMPCUDAForceFullRuntime = 4025 Opts.OpenMPIsDevice && (T.isNVPTX() || T.isAMDGCN()) && 4026 Args.hasArg(options::OPT_fopenmp_cuda_force_full_runtime); 4027 4028 // FIXME: Eliminate this dependency. 4029 unsigned Opt = getOptimizationLevel(Args, IK, Diags), 4030 OptSize = getOptimizationLevelSize(Args); 4031 Opts.Optimize = Opt != 0; 4032 Opts.OptimizeSize = OptSize != 0; 4033 4034 // This is the __NO_INLINE__ define, which just depends on things like the 4035 // optimization level and -fno-inline, not actually whether the backend has 4036 // inlining enabled. 4037 Opts.NoInlineDefine = !Opts.Optimize; 4038 if (Arg *InlineArg = Args.getLastArg( 4039 options::OPT_finline_functions, options::OPT_finline_hint_functions, 4040 options::OPT_fno_inline_functions, options::OPT_fno_inline)) 4041 if (InlineArg->getOption().matches(options::OPT_fno_inline)) 4042 Opts.NoInlineDefine = true; 4043 4044 if (Arg *A = Args.getLastArg(OPT_ffp_contract)) { 4045 StringRef Val = A->getValue(); 4046 if (Val == "fast") 4047 Opts.setDefaultFPContractMode(LangOptions::FPM_Fast); 4048 else if (Val == "on") 4049 Opts.setDefaultFPContractMode(LangOptions::FPM_On); 4050 else if (Val == "off") 4051 Opts.setDefaultFPContractMode(LangOptions::FPM_Off); 4052 else if (Val == "fast-honor-pragmas") 4053 Opts.setDefaultFPContractMode(LangOptions::FPM_FastHonorPragmas); 4054 else 4055 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Val; 4056 } 4057 4058 // Parse -fsanitize= arguments. 4059 parseSanitizerKinds("-fsanitize=", Args.getAllArgValues(OPT_fsanitize_EQ), 4060 Diags, Opts.Sanitize); 4061 Opts.NoSanitizeFiles = Args.getAllArgValues(OPT_fsanitize_ignorelist_EQ); 4062 std::vector<std::string> systemIgnorelists = 4063 Args.getAllArgValues(OPT_fsanitize_system_ignorelist_EQ); 4064 Opts.NoSanitizeFiles.insert(Opts.NoSanitizeFiles.end(), 4065 systemIgnorelists.begin(), 4066 systemIgnorelists.end()); 4067 4068 if (Arg *A = Args.getLastArg(OPT_fclang_abi_compat_EQ)) { 4069 Opts.setClangABICompat(LangOptions::ClangABI::Latest); 4070 4071 StringRef Ver = A->getValue(); 4072 std::pair<StringRef, StringRef> VerParts = Ver.split('.'); 4073 unsigned Major, Minor = 0; 4074 4075 // Check the version number is valid: either 3.x (0 <= x <= 9) or 4076 // y or y.0 (4 <= y <= current version). 4077 if (!VerParts.first.startswith("0") && 4078 !VerParts.first.getAsInteger(10, Major) && 4079 3 <= Major && Major <= CLANG_VERSION_MAJOR && 4080 (Major == 3 ? VerParts.second.size() == 1 && 4081 !VerParts.second.getAsInteger(10, Minor) 4082 : VerParts.first.size() == Ver.size() || 4083 VerParts.second == "0")) { 4084 // Got a valid version number. 4085 if (Major == 3 && Minor <= 8) 4086 Opts.setClangABICompat(LangOptions::ClangABI::Ver3_8); 4087 else if (Major <= 4) 4088 Opts.setClangABICompat(LangOptions::ClangABI::Ver4); 4089 else if (Major <= 6) 4090 Opts.setClangABICompat(LangOptions::ClangABI::Ver6); 4091 else if (Major <= 7) 4092 Opts.setClangABICompat(LangOptions::ClangABI::Ver7); 4093 else if (Major <= 9) 4094 Opts.setClangABICompat(LangOptions::ClangABI::Ver9); 4095 else if (Major <= 11) 4096 Opts.setClangABICompat(LangOptions::ClangABI::Ver11); 4097 else if (Major <= 12) 4098 Opts.setClangABICompat(LangOptions::ClangABI::Ver12); 4099 else if (Major <= 13) 4100 Opts.setClangABICompat(LangOptions::ClangABI::Ver13); 4101 } else if (Ver != "latest") { 4102 Diags.Report(diag::err_drv_invalid_value) 4103 << A->getAsString(Args) << A->getValue(); 4104 } 4105 } 4106 4107 if (Arg *A = Args.getLastArg(OPT_msign_return_address_EQ)) { 4108 StringRef SignScope = A->getValue(); 4109 4110 if (SignScope.equals_insensitive("none")) 4111 Opts.setSignReturnAddressScope( 4112 LangOptions::SignReturnAddressScopeKind::None); 4113 else if (SignScope.equals_insensitive("all")) 4114 Opts.setSignReturnAddressScope( 4115 LangOptions::SignReturnAddressScopeKind::All); 4116 else if (SignScope.equals_insensitive("non-leaf")) 4117 Opts.setSignReturnAddressScope( 4118 LangOptions::SignReturnAddressScopeKind::NonLeaf); 4119 else 4120 Diags.Report(diag::err_drv_invalid_value) 4121 << A->getAsString(Args) << SignScope; 4122 4123 if (Arg *A = Args.getLastArg(OPT_msign_return_address_key_EQ)) { 4124 StringRef SignKey = A->getValue(); 4125 if (!SignScope.empty() && !SignKey.empty()) { 4126 if (SignKey.equals_insensitive("a_key")) 4127 Opts.setSignReturnAddressKey( 4128 LangOptions::SignReturnAddressKeyKind::AKey); 4129 else if (SignKey.equals_insensitive("b_key")) 4130 Opts.setSignReturnAddressKey( 4131 LangOptions::SignReturnAddressKeyKind::BKey); 4132 else 4133 Diags.Report(diag::err_drv_invalid_value) 4134 << A->getAsString(Args) << SignKey; 4135 } 4136 } 4137 } 4138 4139 // The value can be empty, which indicates the system default should be used. 4140 StringRef CXXABI = Args.getLastArgValue(OPT_fcxx_abi_EQ); 4141 if (!CXXABI.empty()) { 4142 if (!TargetCXXABI::isABI(CXXABI)) { 4143 Diags.Report(diag::err_invalid_cxx_abi) << CXXABI; 4144 } else { 4145 auto Kind = TargetCXXABI::getKind(CXXABI); 4146 if (!TargetCXXABI::isSupportedCXXABI(T, Kind)) 4147 Diags.Report(diag::err_unsupported_cxx_abi) << CXXABI << T.str(); 4148 else 4149 Opts.CXXABI = Kind; 4150 } 4151 } 4152 4153 Opts.RelativeCXXABIVTables = 4154 Args.hasFlag(options::OPT_fexperimental_relative_cxx_abi_vtables, 4155 options::OPT_fno_experimental_relative_cxx_abi_vtables, 4156 TargetCXXABI::usesRelativeVTables(T)); 4157 4158 for (const auto &A : Args.getAllArgValues(OPT_fmacro_prefix_map_EQ)) { 4159 auto Split = StringRef(A).split('='); 4160 Opts.MacroPrefixMap.insert( 4161 {std::string(Split.first), std::string(Split.second)}); 4162 } 4163 4164 // Error if -mvscale-min is unbounded. 4165 if (Arg *A = Args.getLastArg(options::OPT_mvscale_min_EQ)) { 4166 unsigned VScaleMin; 4167 if (StringRef(A->getValue()).getAsInteger(10, VScaleMin) || VScaleMin == 0) 4168 Diags.Report(diag::err_cc1_unbounded_vscale_min); 4169 } 4170 4171 return Diags.getNumErrors() == NumErrorsBefore; 4172 } 4173 4174 static bool isStrictlyPreprocessorAction(frontend::ActionKind Action) { 4175 switch (Action) { 4176 case frontend::ASTDeclList: 4177 case frontend::ASTDump: 4178 case frontend::ASTPrint: 4179 case frontend::ASTView: 4180 case frontend::EmitAssembly: 4181 case frontend::EmitBC: 4182 case frontend::EmitHTML: 4183 case frontend::EmitLLVM: 4184 case frontend::EmitLLVMOnly: 4185 case frontend::EmitCodeGenOnly: 4186 case frontend::EmitObj: 4187 case frontend::ExtractAPI: 4188 case frontend::FixIt: 4189 case frontend::GenerateModule: 4190 case frontend::GenerateModuleInterface: 4191 case frontend::GenerateHeaderModule: 4192 case frontend::GeneratePCH: 4193 case frontend::GenerateInterfaceStubs: 4194 case frontend::ParseSyntaxOnly: 4195 case frontend::ModuleFileInfo: 4196 case frontend::VerifyPCH: 4197 case frontend::PluginAction: 4198 case frontend::RewriteObjC: 4199 case frontend::RewriteTest: 4200 case frontend::RunAnalysis: 4201 case frontend::TemplightDump: 4202 case frontend::MigrateSource: 4203 return false; 4204 4205 case frontend::DumpCompilerOptions: 4206 case frontend::DumpRawTokens: 4207 case frontend::DumpTokens: 4208 case frontend::InitOnly: 4209 case frontend::PrintPreamble: 4210 case frontend::PrintPreprocessedInput: 4211 case frontend::RewriteMacros: 4212 case frontend::RunPreprocessorOnly: 4213 case frontend::PrintDependencyDirectivesSourceMinimizerOutput: 4214 return true; 4215 } 4216 llvm_unreachable("invalid frontend action"); 4217 } 4218 4219 static void GeneratePreprocessorArgs(PreprocessorOptions &Opts, 4220 SmallVectorImpl<const char *> &Args, 4221 CompilerInvocation::StringAllocator SA, 4222 const LangOptions &LangOpts, 4223 const FrontendOptions &FrontendOpts, 4224 const CodeGenOptions &CodeGenOpts) { 4225 PreprocessorOptions *PreprocessorOpts = &Opts; 4226 4227 #define PREPROCESSOR_OPTION_WITH_MARSHALLING( \ 4228 PREFIX_TYPE, NAME, ID, KIND, GROUP, ALIAS, ALIASARGS, FLAGS, PARAM, \ 4229 HELPTEXT, METAVAR, VALUES, SPELLING, SHOULD_PARSE, ALWAYS_EMIT, KEYPATH, \ 4230 DEFAULT_VALUE, IMPLIED_CHECK, IMPLIED_VALUE, NORMALIZER, DENORMALIZER, \ 4231 MERGER, EXTRACTOR, TABLE_INDEX) \ 4232 GENERATE_OPTION_WITH_MARSHALLING( \ 4233 Args, SA, KIND, FLAGS, SPELLING, ALWAYS_EMIT, KEYPATH, DEFAULT_VALUE, \ 4234 IMPLIED_CHECK, IMPLIED_VALUE, DENORMALIZER, EXTRACTOR, TABLE_INDEX) 4235 #include "clang/Driver/Options.inc" 4236 #undef PREPROCESSOR_OPTION_WITH_MARSHALLING 4237 4238 if (Opts.PCHWithHdrStop && !Opts.PCHWithHdrStopCreate) 4239 GenerateArg(Args, OPT_pch_through_hdrstop_use, SA); 4240 4241 for (const auto &D : Opts.DeserializedPCHDeclsToErrorOn) 4242 GenerateArg(Args, OPT_error_on_deserialized_pch_decl, D, SA); 4243 4244 if (Opts.PrecompiledPreambleBytes != std::make_pair(0u, false)) 4245 GenerateArg(Args, OPT_preamble_bytes_EQ, 4246 Twine(Opts.PrecompiledPreambleBytes.first) + "," + 4247 (Opts.PrecompiledPreambleBytes.second ? "1" : "0"), 4248 SA); 4249 4250 for (const auto &M : Opts.Macros) { 4251 // Don't generate __CET__ macro definitions. They are implied by the 4252 // -fcf-protection option that is generated elsewhere. 4253 if (M.first == "__CET__=1" && !M.second && 4254 !CodeGenOpts.CFProtectionReturn && CodeGenOpts.CFProtectionBranch) 4255 continue; 4256 if (M.first == "__CET__=2" && !M.second && CodeGenOpts.CFProtectionReturn && 4257 !CodeGenOpts.CFProtectionBranch) 4258 continue; 4259 if (M.first == "__CET__=3" && !M.second && CodeGenOpts.CFProtectionReturn && 4260 CodeGenOpts.CFProtectionBranch) 4261 continue; 4262 4263 GenerateArg(Args, M.second ? OPT_U : OPT_D, M.first, SA); 4264 } 4265 4266 for (const auto &I : Opts.Includes) { 4267 // Don't generate OpenCL includes. They are implied by other flags that are 4268 // generated elsewhere. 4269 if (LangOpts.OpenCL && LangOpts.IncludeDefaultHeader && 4270 ((LangOpts.DeclareOpenCLBuiltins && I == "opencl-c-base.h") || 4271 I == "opencl-c.h")) 4272 continue; 4273 4274 GenerateArg(Args, OPT_include, I, SA); 4275 } 4276 4277 for (const auto &CI : Opts.ChainedIncludes) 4278 GenerateArg(Args, OPT_chain_include, CI, SA); 4279 4280 for (const auto &RF : Opts.RemappedFiles) 4281 GenerateArg(Args, OPT_remap_file, RF.first + ";" + RF.second, SA); 4282 4283 // Don't handle LexEditorPlaceholders. It is implied by the action that is 4284 // generated elsewhere. 4285 } 4286 4287 static bool ParsePreprocessorArgs(PreprocessorOptions &Opts, ArgList &Args, 4288 DiagnosticsEngine &Diags, 4289 frontend::ActionKind Action, 4290 const FrontendOptions &FrontendOpts) { 4291 unsigned NumErrorsBefore = Diags.getNumErrors(); 4292 4293 PreprocessorOptions *PreprocessorOpts = &Opts; 4294 4295 #define PREPROCESSOR_OPTION_WITH_MARSHALLING( \ 4296 PREFIX_TYPE, NAME, ID, KIND, GROUP, ALIAS, ALIASARGS, FLAGS, PARAM, \ 4297 HELPTEXT, METAVAR, VALUES, SPELLING, SHOULD_PARSE, ALWAYS_EMIT, KEYPATH, \ 4298 DEFAULT_VALUE, IMPLIED_CHECK, IMPLIED_VALUE, NORMALIZER, DENORMALIZER, \ 4299 MERGER, EXTRACTOR, TABLE_INDEX) \ 4300 PARSE_OPTION_WITH_MARSHALLING( \ 4301 Args, Diags, ID, FLAGS, PARAM, SHOULD_PARSE, KEYPATH, DEFAULT_VALUE, \ 4302 IMPLIED_CHECK, IMPLIED_VALUE, NORMALIZER, MERGER, TABLE_INDEX) 4303 #include "clang/Driver/Options.inc" 4304 #undef PREPROCESSOR_OPTION_WITH_MARSHALLING 4305 4306 Opts.PCHWithHdrStop = Args.hasArg(OPT_pch_through_hdrstop_create) || 4307 Args.hasArg(OPT_pch_through_hdrstop_use); 4308 4309 for (const auto *A : Args.filtered(OPT_error_on_deserialized_pch_decl)) 4310 Opts.DeserializedPCHDeclsToErrorOn.insert(A->getValue()); 4311 4312 if (const Arg *A = Args.getLastArg(OPT_preamble_bytes_EQ)) { 4313 StringRef Value(A->getValue()); 4314 size_t Comma = Value.find(','); 4315 unsigned Bytes = 0; 4316 unsigned EndOfLine = 0; 4317 4318 if (Comma == StringRef::npos || 4319 Value.substr(0, Comma).getAsInteger(10, Bytes) || 4320 Value.substr(Comma + 1).getAsInteger(10, EndOfLine)) 4321 Diags.Report(diag::err_drv_preamble_format); 4322 else { 4323 Opts.PrecompiledPreambleBytes.first = Bytes; 4324 Opts.PrecompiledPreambleBytes.second = (EndOfLine != 0); 4325 } 4326 } 4327 4328 // Add the __CET__ macro if a CFProtection option is set. 4329 if (const Arg *A = Args.getLastArg(OPT_fcf_protection_EQ)) { 4330 StringRef Name = A->getValue(); 4331 if (Name == "branch") 4332 Opts.addMacroDef("__CET__=1"); 4333 else if (Name == "return") 4334 Opts.addMacroDef("__CET__=2"); 4335 else if (Name == "full") 4336 Opts.addMacroDef("__CET__=3"); 4337 } 4338 4339 // Add macros from the command line. 4340 for (const auto *A : Args.filtered(OPT_D, OPT_U)) { 4341 if (A->getOption().matches(OPT_D)) 4342 Opts.addMacroDef(A->getValue()); 4343 else 4344 Opts.addMacroUndef(A->getValue()); 4345 } 4346 4347 // Add the ordered list of -includes. 4348 for (const auto *A : Args.filtered(OPT_include)) 4349 Opts.Includes.emplace_back(A->getValue()); 4350 4351 for (const auto *A : Args.filtered(OPT_chain_include)) 4352 Opts.ChainedIncludes.emplace_back(A->getValue()); 4353 4354 for (const auto *A : Args.filtered(OPT_remap_file)) { 4355 std::pair<StringRef, StringRef> Split = StringRef(A->getValue()).split(';'); 4356 4357 if (Split.second.empty()) { 4358 Diags.Report(diag::err_drv_invalid_remap_file) << A->getAsString(Args); 4359 continue; 4360 } 4361 4362 Opts.addRemappedFile(Split.first, Split.second); 4363 } 4364 4365 // Always avoid lexing editor placeholders when we're just running the 4366 // preprocessor as we never want to emit the 4367 // "editor placeholder in source file" error in PP only mode. 4368 if (isStrictlyPreprocessorAction(Action)) 4369 Opts.LexEditorPlaceholders = false; 4370 4371 return Diags.getNumErrors() == NumErrorsBefore; 4372 } 4373 4374 static void GeneratePreprocessorOutputArgs( 4375 const PreprocessorOutputOptions &Opts, SmallVectorImpl<const char *> &Args, 4376 CompilerInvocation::StringAllocator SA, frontend::ActionKind Action) { 4377 const PreprocessorOutputOptions &PreprocessorOutputOpts = Opts; 4378 4379 #define PREPROCESSOR_OUTPUT_OPTION_WITH_MARSHALLING( \ 4380 PREFIX_TYPE, NAME, ID, KIND, GROUP, ALIAS, ALIASARGS, FLAGS, PARAM, \ 4381 HELPTEXT, METAVAR, VALUES, SPELLING, SHOULD_PARSE, ALWAYS_EMIT, KEYPATH, \ 4382 DEFAULT_VALUE, IMPLIED_CHECK, IMPLIED_VALUE, NORMALIZER, DENORMALIZER, \ 4383 MERGER, EXTRACTOR, TABLE_INDEX) \ 4384 GENERATE_OPTION_WITH_MARSHALLING( \ 4385 Args, SA, KIND, FLAGS, SPELLING, ALWAYS_EMIT, KEYPATH, DEFAULT_VALUE, \ 4386 IMPLIED_CHECK, IMPLIED_VALUE, DENORMALIZER, EXTRACTOR, TABLE_INDEX) 4387 #include "clang/Driver/Options.inc" 4388 #undef PREPROCESSOR_OUTPUT_OPTION_WITH_MARSHALLING 4389 4390 bool Generate_dM = isStrictlyPreprocessorAction(Action) && !Opts.ShowCPP; 4391 if (Generate_dM) 4392 GenerateArg(Args, OPT_dM, SA); 4393 if (!Generate_dM && Opts.ShowMacros) 4394 GenerateArg(Args, OPT_dD, SA); 4395 } 4396 4397 static bool ParsePreprocessorOutputArgs(PreprocessorOutputOptions &Opts, 4398 ArgList &Args, DiagnosticsEngine &Diags, 4399 frontend::ActionKind Action) { 4400 unsigned NumErrorsBefore = Diags.getNumErrors(); 4401 4402 PreprocessorOutputOptions &PreprocessorOutputOpts = Opts; 4403 4404 #define PREPROCESSOR_OUTPUT_OPTION_WITH_MARSHALLING( \ 4405 PREFIX_TYPE, NAME, ID, KIND, GROUP, ALIAS, ALIASARGS, FLAGS, PARAM, \ 4406 HELPTEXT, METAVAR, VALUES, SPELLING, SHOULD_PARSE, ALWAYS_EMIT, KEYPATH, \ 4407 DEFAULT_VALUE, IMPLIED_CHECK, IMPLIED_VALUE, NORMALIZER, DENORMALIZER, \ 4408 MERGER, EXTRACTOR, TABLE_INDEX) \ 4409 PARSE_OPTION_WITH_MARSHALLING( \ 4410 Args, Diags, ID, FLAGS, PARAM, SHOULD_PARSE, KEYPATH, DEFAULT_VALUE, \ 4411 IMPLIED_CHECK, IMPLIED_VALUE, NORMALIZER, MERGER, TABLE_INDEX) 4412 #include "clang/Driver/Options.inc" 4413 #undef PREPROCESSOR_OUTPUT_OPTION_WITH_MARSHALLING 4414 4415 Opts.ShowCPP = isStrictlyPreprocessorAction(Action) && !Args.hasArg(OPT_dM); 4416 Opts.ShowMacros = Args.hasArg(OPT_dM) || Args.hasArg(OPT_dD); 4417 4418 return Diags.getNumErrors() == NumErrorsBefore; 4419 } 4420 4421 static void GenerateTargetArgs(const TargetOptions &Opts, 4422 SmallVectorImpl<const char *> &Args, 4423 CompilerInvocation::StringAllocator SA) { 4424 const TargetOptions *TargetOpts = &Opts; 4425 #define TARGET_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 GENERATE_OPTION_WITH_MARSHALLING( \ 4431 Args, SA, KIND, FLAGS, SPELLING, ALWAYS_EMIT, KEYPATH, DEFAULT_VALUE, \ 4432 IMPLIED_CHECK, IMPLIED_VALUE, DENORMALIZER, EXTRACTOR, TABLE_INDEX) 4433 #include "clang/Driver/Options.inc" 4434 #undef TARGET_OPTION_WITH_MARSHALLING 4435 4436 if (!Opts.SDKVersion.empty()) 4437 GenerateArg(Args, OPT_target_sdk_version_EQ, Opts.SDKVersion.getAsString(), 4438 SA); 4439 if (!Opts.DarwinTargetVariantSDKVersion.empty()) 4440 GenerateArg(Args, OPT_darwin_target_variant_sdk_version_EQ, 4441 Opts.DarwinTargetVariantSDKVersion.getAsString(), SA); 4442 } 4443 4444 static bool ParseTargetArgs(TargetOptions &Opts, ArgList &Args, 4445 DiagnosticsEngine &Diags) { 4446 unsigned NumErrorsBefore = Diags.getNumErrors(); 4447 4448 TargetOptions *TargetOpts = &Opts; 4449 4450 #define TARGET_OPTION_WITH_MARSHALLING( \ 4451 PREFIX_TYPE, NAME, ID, KIND, GROUP, ALIAS, ALIASARGS, FLAGS, PARAM, \ 4452 HELPTEXT, METAVAR, VALUES, SPELLING, SHOULD_PARSE, ALWAYS_EMIT, KEYPATH, \ 4453 DEFAULT_VALUE, IMPLIED_CHECK, IMPLIED_VALUE, NORMALIZER, DENORMALIZER, \ 4454 MERGER, EXTRACTOR, TABLE_INDEX) \ 4455 PARSE_OPTION_WITH_MARSHALLING( \ 4456 Args, Diags, ID, FLAGS, PARAM, SHOULD_PARSE, KEYPATH, DEFAULT_VALUE, \ 4457 IMPLIED_CHECK, IMPLIED_VALUE, NORMALIZER, MERGER, TABLE_INDEX) 4458 #include "clang/Driver/Options.inc" 4459 #undef TARGET_OPTION_WITH_MARSHALLING 4460 4461 if (Arg *A = Args.getLastArg(options::OPT_target_sdk_version_EQ)) { 4462 llvm::VersionTuple Version; 4463 if (Version.tryParse(A->getValue())) 4464 Diags.Report(diag::err_drv_invalid_value) 4465 << A->getAsString(Args) << A->getValue(); 4466 else 4467 Opts.SDKVersion = Version; 4468 } 4469 if (Arg *A = 4470 Args.getLastArg(options::OPT_darwin_target_variant_sdk_version_EQ)) { 4471 llvm::VersionTuple Version; 4472 if (Version.tryParse(A->getValue())) 4473 Diags.Report(diag::err_drv_invalid_value) 4474 << A->getAsString(Args) << A->getValue(); 4475 else 4476 Opts.DarwinTargetVariantSDKVersion = Version; 4477 } 4478 4479 return Diags.getNumErrors() == NumErrorsBefore; 4480 } 4481 4482 bool CompilerInvocation::CreateFromArgsImpl( 4483 CompilerInvocation &Res, ArrayRef<const char *> CommandLineArgs, 4484 DiagnosticsEngine &Diags, const char *Argv0) { 4485 unsigned NumErrorsBefore = Diags.getNumErrors(); 4486 4487 // Parse the arguments. 4488 const OptTable &Opts = getDriverOptTable(); 4489 const unsigned IncludedFlagsBitmask = options::CC1Option; 4490 unsigned MissingArgIndex, MissingArgCount; 4491 InputArgList Args = Opts.ParseArgs(CommandLineArgs, MissingArgIndex, 4492 MissingArgCount, IncludedFlagsBitmask); 4493 LangOptions &LangOpts = *Res.getLangOpts(); 4494 4495 // Check for missing argument error. 4496 if (MissingArgCount) 4497 Diags.Report(diag::err_drv_missing_argument) 4498 << Args.getArgString(MissingArgIndex) << MissingArgCount; 4499 4500 // Issue errors on unknown arguments. 4501 for (const auto *A : Args.filtered(OPT_UNKNOWN)) { 4502 auto ArgString = A->getAsString(Args); 4503 std::string Nearest; 4504 if (Opts.findNearest(ArgString, Nearest, IncludedFlagsBitmask) > 1) 4505 Diags.Report(diag::err_drv_unknown_argument) << ArgString; 4506 else 4507 Diags.Report(diag::err_drv_unknown_argument_with_suggestion) 4508 << ArgString << Nearest; 4509 } 4510 4511 ParseFileSystemArgs(Res.getFileSystemOpts(), Args, Diags); 4512 ParseMigratorArgs(Res.getMigratorOpts(), Args, Diags); 4513 ParseAnalyzerArgs(*Res.getAnalyzerOpts(), Args, Diags); 4514 ParseDiagnosticArgs(Res.getDiagnosticOpts(), Args, &Diags, 4515 /*DefaultDiagColor=*/false); 4516 ParseFrontendArgs(Res.getFrontendOpts(), Args, Diags, LangOpts.IsHeaderFile); 4517 // FIXME: We shouldn't have to pass the DashX option around here 4518 InputKind DashX = Res.getFrontendOpts().DashX; 4519 ParseTargetArgs(Res.getTargetOpts(), Args, Diags); 4520 llvm::Triple T(Res.getTargetOpts().Triple); 4521 ParseHeaderSearchArgs(Res.getHeaderSearchOpts(), Args, Diags, 4522 Res.getFileSystemOpts().WorkingDir); 4523 4524 ParseLangArgs(LangOpts, Args, DashX, T, Res.getPreprocessorOpts().Includes, 4525 Diags); 4526 if (Res.getFrontendOpts().ProgramAction == frontend::RewriteObjC) 4527 LangOpts.ObjCExceptions = 1; 4528 4529 for (auto Warning : Res.getDiagnosticOpts().Warnings) { 4530 if (Warning == "misexpect" && 4531 !Diags.isIgnored(diag::warn_profile_data_misexpect, SourceLocation())) { 4532 Res.getCodeGenOpts().MisExpect = true; 4533 } 4534 } 4535 4536 if (LangOpts.CUDA) { 4537 // During CUDA device-side compilation, the aux triple is the 4538 // triple used for host compilation. 4539 if (LangOpts.CUDAIsDevice) 4540 Res.getTargetOpts().HostTriple = Res.getFrontendOpts().AuxTriple; 4541 } 4542 4543 // Set the triple of the host for OpenMP device compile. 4544 if (LangOpts.OpenMPIsDevice) 4545 Res.getTargetOpts().HostTriple = Res.getFrontendOpts().AuxTriple; 4546 4547 ParseCodeGenArgs(Res.getCodeGenOpts(), Args, DashX, Diags, T, 4548 Res.getFrontendOpts().OutputFile, LangOpts); 4549 4550 // FIXME: Override value name discarding when asan or msan is used because the 4551 // backend passes depend on the name of the alloca in order to print out 4552 // names. 4553 Res.getCodeGenOpts().DiscardValueNames &= 4554 !LangOpts.Sanitize.has(SanitizerKind::Address) && 4555 !LangOpts.Sanitize.has(SanitizerKind::KernelAddress) && 4556 !LangOpts.Sanitize.has(SanitizerKind::Memory) && 4557 !LangOpts.Sanitize.has(SanitizerKind::KernelMemory); 4558 4559 ParsePreprocessorArgs(Res.getPreprocessorOpts(), Args, Diags, 4560 Res.getFrontendOpts().ProgramAction, 4561 Res.getFrontendOpts()); 4562 ParsePreprocessorOutputArgs(Res.getPreprocessorOutputOpts(), Args, Diags, 4563 Res.getFrontendOpts().ProgramAction); 4564 4565 ParseDependencyOutputArgs(Res.getDependencyOutputOpts(), Args, Diags, 4566 Res.getFrontendOpts().ProgramAction, 4567 Res.getPreprocessorOutputOpts().ShowLineMarkers); 4568 if (!Res.getDependencyOutputOpts().OutputFile.empty() && 4569 Res.getDependencyOutputOpts().Targets.empty()) 4570 Diags.Report(diag::err_fe_dependency_file_requires_MT); 4571 4572 // If sanitizer is enabled, disable OPT_ffine_grained_bitfield_accesses. 4573 if (Res.getCodeGenOpts().FineGrainedBitfieldAccesses && 4574 !Res.getLangOpts()->Sanitize.empty()) { 4575 Res.getCodeGenOpts().FineGrainedBitfieldAccesses = false; 4576 Diags.Report(diag::warn_drv_fine_grained_bitfield_accesses_ignored); 4577 } 4578 4579 // Store the command-line for using in the CodeView backend. 4580 Res.getCodeGenOpts().Argv0 = Argv0; 4581 append_range(Res.getCodeGenOpts().CommandLineArgs, CommandLineArgs); 4582 4583 FixupInvocation(Res, Diags, Args, DashX); 4584 4585 return Diags.getNumErrors() == NumErrorsBefore; 4586 } 4587 4588 bool CompilerInvocation::CreateFromArgs(CompilerInvocation &Invocation, 4589 ArrayRef<const char *> CommandLineArgs, 4590 DiagnosticsEngine &Diags, 4591 const char *Argv0) { 4592 CompilerInvocation DummyInvocation; 4593 4594 return RoundTrip( 4595 [](CompilerInvocation &Invocation, ArrayRef<const char *> CommandLineArgs, 4596 DiagnosticsEngine &Diags, const char *Argv0) { 4597 return CreateFromArgsImpl(Invocation, CommandLineArgs, Diags, Argv0); 4598 }, 4599 [](CompilerInvocation &Invocation, SmallVectorImpl<const char *> &Args, 4600 StringAllocator SA) { Invocation.generateCC1CommandLine(Args, SA); }, 4601 Invocation, DummyInvocation, CommandLineArgs, Diags, Argv0); 4602 } 4603 4604 std::string CompilerInvocation::getModuleHash() const { 4605 // FIXME: Consider using SHA1 instead of MD5. 4606 llvm::HashBuilder<llvm::MD5, llvm::support::endianness::native> HBuilder; 4607 4608 // Note: For QoI reasons, the things we use as a hash here should all be 4609 // dumped via the -module-info flag. 4610 4611 // Start the signature with the compiler version. 4612 HBuilder.add(getClangFullRepositoryVersion()); 4613 4614 // Also include the serialization version, in case LLVM_APPEND_VC_REV is off 4615 // and getClangFullRepositoryVersion() doesn't include git revision. 4616 HBuilder.add(serialization::VERSION_MAJOR, serialization::VERSION_MINOR); 4617 4618 // Extend the signature with the language options 4619 #define LANGOPT(Name, Bits, Default, Description) HBuilder.add(LangOpts->Name); 4620 #define ENUM_LANGOPT(Name, Type, Bits, Default, Description) \ 4621 HBuilder.add(static_cast<unsigned>(LangOpts->get##Name())); 4622 #define BENIGN_LANGOPT(Name, Bits, Default, Description) 4623 #define BENIGN_ENUM_LANGOPT(Name, Type, Bits, Default, Description) 4624 #include "clang/Basic/LangOptions.def" 4625 4626 HBuilder.addRange(LangOpts->ModuleFeatures); 4627 4628 HBuilder.add(LangOpts->ObjCRuntime); 4629 HBuilder.addRange(LangOpts->CommentOpts.BlockCommandNames); 4630 4631 // Extend the signature with the target options. 4632 HBuilder.add(TargetOpts->Triple, TargetOpts->CPU, TargetOpts->TuneCPU, 4633 TargetOpts->ABI); 4634 HBuilder.addRange(TargetOpts->FeaturesAsWritten); 4635 4636 // Extend the signature with preprocessor options. 4637 const PreprocessorOptions &ppOpts = getPreprocessorOpts(); 4638 HBuilder.add(ppOpts.UsePredefines, ppOpts.DetailedRecord); 4639 4640 const HeaderSearchOptions &hsOpts = getHeaderSearchOpts(); 4641 for (const auto &Macro : getPreprocessorOpts().Macros) { 4642 // If we're supposed to ignore this macro for the purposes of modules, 4643 // don't put it into the hash. 4644 if (!hsOpts.ModulesIgnoreMacros.empty()) { 4645 // Check whether we're ignoring this macro. 4646 StringRef MacroDef = Macro.first; 4647 if (hsOpts.ModulesIgnoreMacros.count( 4648 llvm::CachedHashString(MacroDef.split('=').first))) 4649 continue; 4650 } 4651 4652 HBuilder.add(Macro); 4653 } 4654 4655 // Extend the signature with the sysroot and other header search options. 4656 HBuilder.add(hsOpts.Sysroot, hsOpts.ModuleFormat, hsOpts.UseDebugInfo, 4657 hsOpts.UseBuiltinIncludes, hsOpts.UseStandardSystemIncludes, 4658 hsOpts.UseStandardCXXIncludes, hsOpts.UseLibcxx, 4659 hsOpts.ModulesValidateDiagnosticOptions); 4660 HBuilder.add(hsOpts.ResourceDir); 4661 4662 if (hsOpts.ModulesStrictContextHash) { 4663 HBuilder.addRange(hsOpts.SystemHeaderPrefixes); 4664 HBuilder.addRange(hsOpts.UserEntries); 4665 4666 const DiagnosticOptions &diagOpts = getDiagnosticOpts(); 4667 #define DIAGOPT(Name, Bits, Default) HBuilder.add(diagOpts.Name); 4668 #define ENUM_DIAGOPT(Name, Type, Bits, Default) \ 4669 HBuilder.add(diagOpts.get##Name()); 4670 #include "clang/Basic/DiagnosticOptions.def" 4671 #undef DIAGOPT 4672 #undef ENUM_DIAGOPT 4673 } 4674 4675 // Extend the signature with the user build path. 4676 HBuilder.add(hsOpts.ModuleUserBuildPath); 4677 4678 // Extend the signature with the module file extensions. 4679 for (const auto &ext : getFrontendOpts().ModuleFileExtensions) 4680 ext->hashExtension(HBuilder); 4681 4682 // When compiling with -gmodules, also hash -fdebug-prefix-map as it 4683 // affects the debug info in the PCM. 4684 if (getCodeGenOpts().DebugTypeExtRefs) 4685 HBuilder.addRange(getCodeGenOpts().DebugPrefixMap); 4686 4687 // Extend the signature with the enabled sanitizers, if at least one is 4688 // enabled. Sanitizers which cannot affect AST generation aren't hashed. 4689 SanitizerSet SanHash = LangOpts->Sanitize; 4690 SanHash.clear(getPPTransparentSanitizers()); 4691 if (!SanHash.empty()) 4692 HBuilder.add(SanHash.Mask); 4693 4694 llvm::MD5::MD5Result Result; 4695 HBuilder.getHasher().final(Result); 4696 uint64_t Hash = Result.high() ^ Result.low(); 4697 return toString(llvm::APInt(64, Hash), 36, /*Signed=*/false); 4698 } 4699 4700 void CompilerInvocation::generateCC1CommandLine( 4701 SmallVectorImpl<const char *> &Args, StringAllocator SA) const { 4702 llvm::Triple T(TargetOpts->Triple); 4703 4704 GenerateFileSystemArgs(FileSystemOpts, Args, SA); 4705 GenerateMigratorArgs(MigratorOpts, Args, SA); 4706 GenerateAnalyzerArgs(*AnalyzerOpts, Args, SA); 4707 GenerateDiagnosticArgs(*DiagnosticOpts, Args, SA, false); 4708 GenerateFrontendArgs(FrontendOpts, Args, SA, LangOpts->IsHeaderFile); 4709 GenerateTargetArgs(*TargetOpts, Args, SA); 4710 GenerateHeaderSearchArgs(*HeaderSearchOpts, Args, SA); 4711 GenerateLangArgs(*LangOpts, Args, SA, T, FrontendOpts.DashX); 4712 GenerateCodeGenArgs(CodeGenOpts, Args, SA, T, FrontendOpts.OutputFile, 4713 &*LangOpts); 4714 GeneratePreprocessorArgs(*PreprocessorOpts, Args, SA, *LangOpts, FrontendOpts, 4715 CodeGenOpts); 4716 GeneratePreprocessorOutputArgs(PreprocessorOutputOpts, Args, SA, 4717 FrontendOpts.ProgramAction); 4718 GenerateDependencyOutputArgs(DependencyOutputOpts, Args, SA); 4719 } 4720 4721 IntrusiveRefCntPtr<llvm::vfs::FileSystem> 4722 clang::createVFSFromCompilerInvocation(const CompilerInvocation &CI, 4723 DiagnosticsEngine &Diags) { 4724 return createVFSFromCompilerInvocation(CI, Diags, 4725 llvm::vfs::getRealFileSystem()); 4726 } 4727 4728 IntrusiveRefCntPtr<llvm::vfs::FileSystem> 4729 clang::createVFSFromCompilerInvocation( 4730 const CompilerInvocation &CI, DiagnosticsEngine &Diags, 4731 IntrusiveRefCntPtr<llvm::vfs::FileSystem> BaseFS) { 4732 if (CI.getHeaderSearchOpts().VFSOverlayFiles.empty()) 4733 return BaseFS; 4734 4735 IntrusiveRefCntPtr<llvm::vfs::FileSystem> Result = BaseFS; 4736 // earlier vfs files are on the bottom 4737 for (const auto &File : CI.getHeaderSearchOpts().VFSOverlayFiles) { 4738 llvm::ErrorOr<std::unique_ptr<llvm::MemoryBuffer>> Buffer = 4739 Result->getBufferForFile(File); 4740 if (!Buffer) { 4741 Diags.Report(diag::err_missing_vfs_overlay_file) << File; 4742 continue; 4743 } 4744 4745 IntrusiveRefCntPtr<llvm::vfs::FileSystem> FS = llvm::vfs::getVFSFromYAML( 4746 std::move(Buffer.get()), /*DiagHandler*/ nullptr, File, 4747 /*DiagContext*/ nullptr, Result); 4748 if (!FS) { 4749 Diags.Report(diag::err_invalid_vfs_overlay) << File; 4750 continue; 4751 } 4752 4753 Result = FS; 4754 } 4755 return Result; 4756 } 4757