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/Host.h" 82 #include "llvm/Support/MathExtras.h" 83 #include "llvm/Support/MemoryBuffer.h" 84 #include "llvm/Support/Path.h" 85 #include "llvm/Support/Process.h" 86 #include "llvm/Support/Regex.h" 87 #include "llvm/Support/VersionTuple.h" 88 #include "llvm/Support/VirtualFileSystem.h" 89 #include "llvm/Support/raw_ostream.h" 90 #include "llvm/Target/TargetOptions.h" 91 #include <algorithm> 92 #include <atomic> 93 #include <cassert> 94 #include <cstddef> 95 #include <cstring> 96 #include <memory> 97 #include <string> 98 #include <tuple> 99 #include <type_traits> 100 #include <utility> 101 #include <vector> 102 103 using namespace clang; 104 using namespace driver; 105 using namespace options; 106 using namespace llvm::opt; 107 108 //===----------------------------------------------------------------------===// 109 // Initialization. 110 //===----------------------------------------------------------------------===// 111 112 CompilerInvocationBase::CompilerInvocationBase() 113 : LangOpts(new LangOptions()), TargetOpts(new TargetOptions()), 114 DiagnosticOpts(new DiagnosticOptions()), 115 HeaderSearchOpts(new HeaderSearchOptions()), 116 PreprocessorOpts(new PreprocessorOptions()) {} 117 118 CompilerInvocationBase::CompilerInvocationBase(const CompilerInvocationBase &X) 119 : LangOpts(new LangOptions(*X.getLangOpts())), 120 TargetOpts(new TargetOptions(X.getTargetOpts())), 121 DiagnosticOpts(new DiagnosticOptions(X.getDiagnosticOpts())), 122 HeaderSearchOpts(new HeaderSearchOptions(X.getHeaderSearchOpts())), 123 PreprocessorOpts(new PreprocessorOptions(X.getPreprocessorOpts())) {} 124 125 CompilerInvocationBase::~CompilerInvocationBase() = default; 126 127 //===----------------------------------------------------------------------===// 128 // Normalizers 129 //===----------------------------------------------------------------------===// 130 131 #define SIMPLE_ENUM_VALUE_TABLE 132 #include "clang/Driver/Options.inc" 133 #undef SIMPLE_ENUM_VALUE_TABLE 134 135 static llvm::Optional<bool> 136 normalizeSimpleFlag(OptSpecifier Opt, unsigned TableIndex, const ArgList &Args, 137 DiagnosticsEngine &Diags, bool &Success) { 138 if (Args.hasArg(Opt)) 139 return true; 140 return None; 141 } 142 143 static Optional<bool> normalizeSimpleNegativeFlag(OptSpecifier Opt, unsigned, 144 const ArgList &Args, 145 DiagnosticsEngine &, 146 bool &Success) { 147 if (Args.hasArg(Opt)) 148 return false; 149 return None; 150 } 151 152 /// The tblgen-erated code passes in a fifth parameter of an arbitrary type, but 153 /// denormalizeSimpleFlags never looks at it. Avoid bloating compile-time with 154 /// unnecessary template instantiations and just ignore it with a variadic 155 /// argument. 156 static void denormalizeSimpleFlag(SmallVectorImpl<const char *> &Args, 157 const char *Spelling, 158 CompilerInvocation::StringAllocator, 159 Option::OptionClass, unsigned, /*T*/...) { 160 Args.push_back(Spelling); 161 } 162 163 template <typename T> static constexpr bool is_uint64_t_convertible() { 164 return !std::is_same<T, uint64_t>::value && 165 llvm::is_integral_or_enum<T>::value; 166 } 167 168 template <typename T, 169 std::enable_if_t<!is_uint64_t_convertible<T>(), bool> = false> 170 static auto makeFlagToValueNormalizer(T Value) { 171 return [Value](OptSpecifier Opt, unsigned, const ArgList &Args, 172 DiagnosticsEngine &, bool &Success) -> Optional<T> { 173 if (Args.hasArg(Opt)) 174 return Value; 175 return None; 176 }; 177 } 178 179 template <typename T, 180 std::enable_if_t<is_uint64_t_convertible<T>(), bool> = false> 181 static auto makeFlagToValueNormalizer(T Value) { 182 return makeFlagToValueNormalizer(uint64_t(Value)); 183 } 184 185 static auto makeBooleanOptionNormalizer(bool Value, bool OtherValue, 186 OptSpecifier OtherOpt) { 187 return [Value, OtherValue, OtherOpt](OptSpecifier Opt, unsigned, 188 const ArgList &Args, DiagnosticsEngine &, 189 bool &Success) -> Optional<bool> { 190 if (const Arg *A = Args.getLastArg(Opt, OtherOpt)) { 191 return A->getOption().matches(Opt) ? Value : OtherValue; 192 } 193 return None; 194 }; 195 } 196 197 static auto makeBooleanOptionDenormalizer(bool Value) { 198 return [Value](SmallVectorImpl<const char *> &Args, const char *Spelling, 199 CompilerInvocation::StringAllocator, Option::OptionClass, 200 unsigned, bool KeyPath) { 201 if (KeyPath == Value) 202 Args.push_back(Spelling); 203 }; 204 } 205 206 static void denormalizeStringImpl(SmallVectorImpl<const char *> &Args, 207 const char *Spelling, 208 CompilerInvocation::StringAllocator SA, 209 Option::OptionClass OptClass, unsigned, 210 const Twine &Value) { 211 switch (OptClass) { 212 case Option::SeparateClass: 213 case Option::JoinedOrSeparateClass: 214 Args.push_back(Spelling); 215 Args.push_back(SA(Value)); 216 break; 217 case Option::JoinedClass: 218 case Option::CommaJoinedClass: 219 Args.push_back(SA(Twine(Spelling) + Value)); 220 break; 221 default: 222 llvm_unreachable("Cannot denormalize an option with option class " 223 "incompatible with string denormalization."); 224 } 225 } 226 227 template <typename T> 228 static void 229 denormalizeString(SmallVectorImpl<const char *> &Args, const char *Spelling, 230 CompilerInvocation::StringAllocator SA, 231 Option::OptionClass OptClass, unsigned TableIndex, T Value) { 232 denormalizeStringImpl(Args, Spelling, SA, OptClass, TableIndex, Twine(Value)); 233 } 234 235 static Optional<SimpleEnumValue> 236 findValueTableByName(const SimpleEnumValueTable &Table, StringRef Name) { 237 for (int I = 0, E = Table.Size; I != E; ++I) 238 if (Name == Table.Table[I].Name) 239 return Table.Table[I]; 240 241 return None; 242 } 243 244 static Optional<SimpleEnumValue> 245 findValueTableByValue(const SimpleEnumValueTable &Table, unsigned Value) { 246 for (int I = 0, E = Table.Size; I != E; ++I) 247 if (Value == Table.Table[I].Value) 248 return Table.Table[I]; 249 250 return None; 251 } 252 253 static llvm::Optional<unsigned> 254 normalizeSimpleEnum(OptSpecifier Opt, unsigned TableIndex, const ArgList &Args, 255 DiagnosticsEngine &Diags, bool &Success) { 256 assert(TableIndex < SimpleEnumValueTablesSize); 257 const SimpleEnumValueTable &Table = SimpleEnumValueTables[TableIndex]; 258 259 auto *Arg = Args.getLastArg(Opt); 260 if (!Arg) 261 return None; 262 263 StringRef ArgValue = Arg->getValue(); 264 if (auto MaybeEnumVal = findValueTableByName(Table, ArgValue)) 265 return MaybeEnumVal->Value; 266 267 Success = false; 268 Diags.Report(diag::err_drv_invalid_value) 269 << Arg->getAsString(Args) << ArgValue; 270 return None; 271 } 272 273 static void denormalizeSimpleEnumImpl(SmallVectorImpl<const char *> &Args, 274 const char *Spelling, 275 CompilerInvocation::StringAllocator SA, 276 Option::OptionClass OptClass, 277 unsigned TableIndex, unsigned Value) { 278 assert(TableIndex < SimpleEnumValueTablesSize); 279 const SimpleEnumValueTable &Table = SimpleEnumValueTables[TableIndex]; 280 if (auto MaybeEnumVal = findValueTableByValue(Table, Value)) { 281 denormalizeString(Args, Spelling, SA, OptClass, TableIndex, 282 MaybeEnumVal->Name); 283 } else { 284 llvm_unreachable("The simple enum value was not correctly defined in " 285 "the tablegen option description"); 286 } 287 } 288 289 template <typename T> 290 static void denormalizeSimpleEnum(SmallVectorImpl<const char *> &Args, 291 const char *Spelling, 292 CompilerInvocation::StringAllocator SA, 293 Option::OptionClass OptClass, 294 unsigned TableIndex, T Value) { 295 return denormalizeSimpleEnumImpl(Args, Spelling, SA, OptClass, TableIndex, 296 static_cast<unsigned>(Value)); 297 } 298 299 static Optional<std::string> normalizeString(OptSpecifier Opt, int TableIndex, 300 const ArgList &Args, 301 DiagnosticsEngine &Diags, 302 bool &Success) { 303 auto *Arg = Args.getLastArg(Opt); 304 if (!Arg) 305 return None; 306 return std::string(Arg->getValue()); 307 } 308 309 template <typename IntTy> 310 static Optional<IntTy> 311 normalizeStringIntegral(OptSpecifier Opt, int, const ArgList &Args, 312 DiagnosticsEngine &Diags, bool &Success) { 313 auto *Arg = Args.getLastArg(Opt); 314 if (!Arg) 315 return None; 316 IntTy Res; 317 if (StringRef(Arg->getValue()).getAsInteger(0, Res)) { 318 Success = false; 319 Diags.Report(diag::err_drv_invalid_int_value) 320 << Arg->getAsString(Args) << Arg->getValue(); 321 return None; 322 } 323 return Res; 324 } 325 326 static Optional<std::vector<std::string>> 327 normalizeStringVector(OptSpecifier Opt, int, const ArgList &Args, 328 DiagnosticsEngine &, bool &Success) { 329 return Args.getAllArgValues(Opt); 330 } 331 332 static void denormalizeStringVector(SmallVectorImpl<const char *> &Args, 333 const char *Spelling, 334 CompilerInvocation::StringAllocator SA, 335 Option::OptionClass OptClass, 336 unsigned TableIndex, 337 const std::vector<std::string> &Values) { 338 switch (OptClass) { 339 case Option::CommaJoinedClass: { 340 std::string CommaJoinedValue; 341 if (!Values.empty()) { 342 CommaJoinedValue.append(Values.front()); 343 for (const std::string &Value : llvm::drop_begin(Values, 1)) { 344 CommaJoinedValue.append(","); 345 CommaJoinedValue.append(Value); 346 } 347 } 348 denormalizeString(Args, Spelling, SA, Option::OptionClass::JoinedClass, 349 TableIndex, CommaJoinedValue); 350 break; 351 } 352 case Option::JoinedClass: 353 case Option::SeparateClass: 354 case Option::JoinedOrSeparateClass: 355 for (const std::string &Value : Values) 356 denormalizeString(Args, Spelling, SA, OptClass, TableIndex, Value); 357 break; 358 default: 359 llvm_unreachable("Cannot denormalize an option with option class " 360 "incompatible with string vector denormalization."); 361 } 362 } 363 364 static Optional<std::string> normalizeTriple(OptSpecifier Opt, int TableIndex, 365 const ArgList &Args, 366 DiagnosticsEngine &Diags, 367 bool &Success) { 368 auto *Arg = Args.getLastArg(Opt); 369 if (!Arg) 370 return None; 371 return llvm::Triple::normalize(Arg->getValue()); 372 } 373 374 template <typename T, typename U> 375 static T mergeForwardValue(T KeyPath, U Value) { 376 return static_cast<T>(Value); 377 } 378 379 template <typename T, typename U> static T mergeMaskValue(T KeyPath, U Value) { 380 return KeyPath | Value; 381 } 382 383 template <typename T> static T extractForwardValue(T KeyPath) { 384 return KeyPath; 385 } 386 387 template <typename T, typename U, U Value> 388 static T extractMaskValue(T KeyPath) { 389 return ((KeyPath & Value) == Value) ? static_cast<T>(Value) : T(); 390 } 391 392 #define PARSE_OPTION_WITH_MARSHALLING(ARGS, DIAGS, SUCCESS, ID, FLAGS, PARAM, \ 393 SHOULD_PARSE, KEYPATH, DEFAULT_VALUE, \ 394 IMPLIED_CHECK, IMPLIED_VALUE, \ 395 NORMALIZER, MERGER, TABLE_INDEX) \ 396 if ((FLAGS)&options::CC1Option) { \ 397 KEYPATH = MERGER(KEYPATH, DEFAULT_VALUE); \ 398 if (IMPLIED_CHECK) \ 399 KEYPATH = MERGER(KEYPATH, IMPLIED_VALUE); \ 400 if (SHOULD_PARSE) \ 401 if (auto MaybeValue = \ 402 NORMALIZER(OPT_##ID, TABLE_INDEX, ARGS, DIAGS, SUCCESS)) \ 403 KEYPATH = \ 404 MERGER(KEYPATH, static_cast<decltype(KEYPATH)>(*MaybeValue)); \ 405 } 406 407 // Capture the extracted value as a lambda argument to avoid potential issues 408 // with lifetime extension of the reference. 409 #define GENERATE_OPTION_WITH_MARSHALLING( \ 410 ARGS, STRING_ALLOCATOR, KIND, FLAGS, SPELLING, ALWAYS_EMIT, KEYPATH, \ 411 DEFAULT_VALUE, IMPLIED_CHECK, IMPLIED_VALUE, DENORMALIZER, EXTRACTOR, \ 412 TABLE_INDEX) \ 413 if ((FLAGS)&options::CC1Option) { \ 414 [&](const auto &Extracted) { \ 415 if (ALWAYS_EMIT || \ 416 (Extracted != \ 417 static_cast<decltype(KEYPATH)>((IMPLIED_CHECK) ? (IMPLIED_VALUE) \ 418 : (DEFAULT_VALUE)))) \ 419 DENORMALIZER(ARGS, SPELLING, STRING_ALLOCATOR, Option::KIND##Class, \ 420 TABLE_INDEX, Extracted); \ 421 }(EXTRACTOR(KEYPATH)); \ 422 } 423 424 static const StringRef GetInputKindName(InputKind IK); 425 426 static void FixupInvocation(CompilerInvocation &Invocation, 427 DiagnosticsEngine &Diags, const InputArgList &Args, 428 InputKind IK) { 429 LangOptions &LangOpts = *Invocation.getLangOpts(); 430 CodeGenOptions &CodeGenOpts = Invocation.getCodeGenOpts(); 431 TargetOptions &TargetOpts = Invocation.getTargetOpts(); 432 FrontendOptions &FrontendOpts = Invocation.getFrontendOpts(); 433 CodeGenOpts.XRayInstrumentFunctions = LangOpts.XRayInstrument; 434 CodeGenOpts.XRayAlwaysEmitCustomEvents = LangOpts.XRayAlwaysEmitCustomEvents; 435 CodeGenOpts.XRayAlwaysEmitTypedEvents = LangOpts.XRayAlwaysEmitTypedEvents; 436 CodeGenOpts.DisableFree = FrontendOpts.DisableFree; 437 FrontendOpts.GenerateGlobalModuleIndex = FrontendOpts.UseGlobalModuleIndex; 438 439 LangOpts.ForceEmitVTables = CodeGenOpts.ForceEmitVTables; 440 LangOpts.SpeculativeLoadHardening = CodeGenOpts.SpeculativeLoadHardening; 441 LangOpts.CurrentModule = LangOpts.ModuleName; 442 443 llvm::Triple T(TargetOpts.Triple); 444 llvm::Triple::ArchType Arch = T.getArch(); 445 446 CodeGenOpts.CodeModel = TargetOpts.CodeModel; 447 448 if (LangOpts.getExceptionHandling() != llvm::ExceptionHandling::None && 449 T.isWindowsMSVCEnvironment()) 450 Diags.Report(diag::err_fe_invalid_exception_model) 451 << static_cast<unsigned>(LangOpts.getExceptionHandling()) << T.str(); 452 453 if (LangOpts.AppleKext && !LangOpts.CPlusPlus) 454 Diags.Report(diag::warn_c_kext); 455 456 if (Args.hasArg(OPT_fconcepts_ts)) 457 Diags.Report(diag::warn_fe_concepts_ts_flag); 458 459 if (LangOpts.NewAlignOverride && 460 !llvm::isPowerOf2_32(LangOpts.NewAlignOverride)) { 461 Arg *A = Args.getLastArg(OPT_fnew_alignment_EQ); 462 Diags.Report(diag::err_fe_invalid_alignment) 463 << A->getAsString(Args) << A->getValue(); 464 LangOpts.NewAlignOverride = 0; 465 } 466 467 if (Args.hasArg(OPT_fgnu89_inline) && LangOpts.CPlusPlus) 468 Diags.Report(diag::err_drv_argument_not_allowed_with) 469 << "-fgnu89-inline" << GetInputKindName(IK); 470 471 if (Args.hasArg(OPT_fgpu_allow_device_init) && !LangOpts.HIP) 472 Diags.Report(diag::warn_ignored_hip_only_option) 473 << Args.getLastArg(OPT_fgpu_allow_device_init)->getAsString(Args); 474 475 if (Args.hasArg(OPT_gpu_max_threads_per_block_EQ) && !LangOpts.HIP) 476 Diags.Report(diag::warn_ignored_hip_only_option) 477 << Args.getLastArg(OPT_gpu_max_threads_per_block_EQ)->getAsString(Args); 478 479 // -cl-strict-aliasing needs to emit diagnostic in the case where CL > 1.0. 480 // This option should be deprecated for CL > 1.0 because 481 // this option was added for compatibility with OpenCL 1.0. 482 if (Args.getLastArg(OPT_cl_strict_aliasing) && LangOpts.OpenCLVersion > 100) 483 Diags.Report(diag::warn_option_invalid_ocl_version) 484 << LangOpts.getOpenCLVersionTuple().getAsString() 485 << Args.getLastArg(OPT_cl_strict_aliasing)->getAsString(Args); 486 487 if (Arg *A = Args.getLastArg(OPT_fdefault_calling_conv_EQ)) { 488 auto DefaultCC = LangOpts.getDefaultCallingConv(); 489 490 bool emitError = (DefaultCC == LangOptions::DCC_FastCall || 491 DefaultCC == LangOptions::DCC_StdCall) && 492 Arch != llvm::Triple::x86; 493 emitError |= (DefaultCC == LangOptions::DCC_VectorCall || 494 DefaultCC == LangOptions::DCC_RegCall) && 495 !T.isX86(); 496 if (emitError) 497 Diags.Report(diag::err_drv_argument_not_allowed_with) 498 << A->getSpelling() << T.getTriple(); 499 } 500 501 if (!CodeGenOpts.ProfileRemappingFile.empty() && CodeGenOpts.LegacyPassManager) 502 Diags.Report(diag::err_drv_argument_only_allowed_with) 503 << Args.getLastArg(OPT_fprofile_remapping_file_EQ)->getAsString(Args) 504 << "-fno-legacy-pass-manager"; 505 } 506 507 //===----------------------------------------------------------------------===// 508 // Deserialization (from args) 509 //===----------------------------------------------------------------------===// 510 511 static unsigned getOptimizationLevel(ArgList &Args, InputKind IK, 512 DiagnosticsEngine &Diags) { 513 unsigned DefaultOpt = llvm::CodeGenOpt::None; 514 if (IK.getLanguage() == Language::OpenCL && !Args.hasArg(OPT_cl_opt_disable)) 515 DefaultOpt = llvm::CodeGenOpt::Default; 516 517 if (Arg *A = Args.getLastArg(options::OPT_O_Group)) { 518 if (A->getOption().matches(options::OPT_O0)) 519 return llvm::CodeGenOpt::None; 520 521 if (A->getOption().matches(options::OPT_Ofast)) 522 return llvm::CodeGenOpt::Aggressive; 523 524 assert(A->getOption().matches(options::OPT_O)); 525 526 StringRef S(A->getValue()); 527 if (S == "s" || S == "z") 528 return llvm::CodeGenOpt::Default; 529 530 if (S == "g") 531 return llvm::CodeGenOpt::Less; 532 533 return getLastArgIntValue(Args, OPT_O, DefaultOpt, Diags); 534 } 535 536 return DefaultOpt; 537 } 538 539 static unsigned getOptimizationLevelSize(ArgList &Args) { 540 if (Arg *A = Args.getLastArg(options::OPT_O_Group)) { 541 if (A->getOption().matches(options::OPT_O)) { 542 switch (A->getValue()[0]) { 543 default: 544 return 0; 545 case 's': 546 return 1; 547 case 'z': 548 return 2; 549 } 550 } 551 } 552 return 0; 553 } 554 555 static void GenerateArg(SmallVectorImpl<const char *> &Args, 556 llvm::opt::OptSpecifier OptSpecifier, 557 CompilerInvocation::StringAllocator SA) { 558 Option Opt = getDriverOptTable().getOption(OptSpecifier); 559 denormalizeSimpleFlag(Args, SA(Opt.getPrefix() + Opt.getName()), SA, 560 Option::OptionClass::FlagClass, 0); 561 } 562 563 static void GenerateArg(SmallVectorImpl<const char *> &Args, 564 llvm::opt::OptSpecifier OptSpecifier, 565 const Twine &Value, 566 CompilerInvocation::StringAllocator SA) { 567 Option Opt = getDriverOptTable().getOption(OptSpecifier); 568 denormalizeString(Args, SA(Opt.getPrefix() + Opt.getName()), SA, 569 Opt.getKind(), 0, Value); 570 } 571 572 // Parse subset of command line arguments into a member of CompilerInvocation. 573 using ParseFn = llvm::function_ref<bool(CompilerInvocation &, ArgList &, 574 DiagnosticsEngine &)>; 575 576 // Generate part of command line arguments from a member of CompilerInvocation. 577 using GenerateFn = llvm::function_ref<void( 578 CompilerInvocation &, SmallVectorImpl<const char *> &, 579 CompilerInvocation::StringAllocator)>; 580 581 // Swap between dummy/real instance of a CompilerInvocation member. 582 using SwapOptsFn = llvm::function_ref<void(CompilerInvocation &)>; 583 584 // Performs round-trip of command line arguments if OriginalArgs contain 585 // "-round-trip-args". Effectively runs the Parse function for a part of 586 // CompilerInvocation on command line arguments that were already once parsed 587 // and generated. This is used to check the Generate function produces arguments 588 // that are semantically equivalent to those that were used to create 589 // CompilerInvocation. 590 static bool RoundTrip(ParseFn Parse, GenerateFn Generate, SwapOptsFn SwapOpts, 591 CompilerInvocation &Res, ArgList &OriginalArgs, 592 DiagnosticsEngine &Diags, StringRef OptsName) { 593 // FIXME: Switch to '#ifndef NDEBUG' when possible. 594 #ifdef CLANG_ROUND_TRIP_CC1_ARGS 595 bool DoRoundTripDefault = true; 596 #else 597 bool DoRoundTripDefault = false; 598 #endif 599 600 bool DoRoundTrip = OriginalArgs.hasFlag( 601 OPT_round_trip_args, OPT_no_round_trip_args, DoRoundTripDefault); 602 603 // If round-trip was not requested, simply run the parser with the original 604 // options and diagnostics. 605 if (!DoRoundTrip) 606 return Parse(Res, OriginalArgs, Diags); 607 608 // Serializes quoted (and potentially escaped) arguments. 609 auto SerializeArgs = [](ArgStringList &Args) { 610 std::string Buffer; 611 llvm::raw_string_ostream OS(Buffer); 612 for (const char *Arg : Args) { 613 llvm::sys::printArg(OS, Arg, /*Quote=*/true); 614 OS << ' '; 615 } 616 OS.flush(); 617 return Buffer; 618 }; 619 620 OriginalArgs.clearQueriedOpts(); 621 622 // Setup a dummy DiagnosticsEngine. 623 DiagnosticsEngine DummyDiags(new DiagnosticIDs(), new DiagnosticOptions()); 624 DummyDiags.setClient(new TextDiagnosticBuffer()); 625 626 // Run the first parse on the original arguments with dummy options and 627 // diagnostics. 628 SwapOpts(Res); 629 if (!Parse(Res, OriginalArgs, DummyDiags) || 630 DummyDiags.getNumWarnings() != 0) { 631 // If the first parse did not succeed, it must be user mistake (invalid 632 // command line arguments). We won't be able to generate arguments that 633 // would reproduce the same result. Let's fail again with the original 634 // options and diagnostics, so all side-effects of parsing are visible. 635 unsigned NumWarningsBefore = Diags.getNumWarnings(); 636 SwapOpts(Res); 637 auto Success = Parse(Res, OriginalArgs, Diags); 638 if (!Success || Diags.getNumWarnings() != NumWarningsBefore) 639 return Success; 640 641 // Parse with original options and diagnostics succeeded even though it 642 // shouldn't have. Something is off. 643 Diags.Report(diag::err_cc1_round_trip_fail_then_ok) << OptsName; 644 ArgStringList OriginalStrings; 645 OriginalArgs.AddAllArgsExcept(OriginalStrings, {}); 646 Diags.Report(diag::note_cc1_round_trip_original) 647 << OptsName << SerializeArgs(OriginalStrings); 648 return false; 649 } 650 651 // Setup string allocator. 652 llvm::BumpPtrAllocator Alloc; 653 llvm::StringSaver StringPool(Alloc); 654 auto SA = [&StringPool](const Twine &Arg) { 655 return StringPool.save(Arg).data(); 656 }; 657 658 // Generate arguments. First simply copy any arguments the parser did not 659 // query. Then, use the Generate function that uses the CompilerInvocation 660 // options instance as the source of truth. If Generate is the inverse of 661 // Parse, the newly generated arguments must have the same semantics as the 662 // original. 663 ArgStringList GeneratedStrings1; 664 OriginalArgs.AddAllArgsExcept(GeneratedStrings1, 665 OriginalArgs.getQueriedOpts()); 666 Generate(Res, GeneratedStrings1, SA); 667 668 // Process the generated arguments. 669 unsigned MissingArgIndex1, MissingArgCount1; 670 InputArgList GeneratedArgs1 = 671 getDriverOptTable().ParseArgs(GeneratedStrings1, MissingArgIndex1, 672 MissingArgCount1, options::CC1Option); 673 674 // TODO: Once we're responsible for generating all arguments, check that we 675 // didn't create any unknown options or omitted required values. 676 677 // Run the second parse, now on the generated arguments, and with the original 678 // options and diagnostics. The result is what we will end up using for the 679 // rest of compilation, so if Generate is not inverse of Parse, something down 680 // the line will break. 681 SwapOpts(Res); 682 bool Success2 = Parse(Res, GeneratedArgs1, Diags); 683 684 // The first parse on original arguments succeeded, but second parse of 685 // generated arguments failed. Something must be wrong with the generator. 686 if (!Success2) { 687 Diags.Report(diag::err_cc1_round_trip_ok_then_fail) << OptsName; 688 Diags.Report(diag::note_cc1_round_trip_generated) 689 << OptsName << 1 << SerializeArgs(GeneratedStrings1); 690 return false; 691 } 692 693 // Generate arguments again, this time from the options we will end up using 694 // for the rest of the compilation. 695 ArgStringList GeneratedStrings2; 696 GeneratedArgs1.AddAllArgsExcept(GeneratedStrings2, 697 GeneratedArgs1.getQueriedOpts()); 698 Generate(Res, GeneratedStrings2, SA); 699 700 // Compares two lists of generated arguments. 701 auto Equal = [](const ArgStringList &A, const ArgStringList &B) { 702 return std::equal(A.begin(), A.end(), B.begin(), B.end(), 703 [](const char *AElem, const char *BElem) { 704 return StringRef(AElem) == StringRef(BElem); 705 }); 706 }; 707 708 // If we generated different arguments from what we assume are two 709 // semantically equivalent CompilerInvocations, the Generate function may 710 // be non-deterministic. 711 if (!Equal(GeneratedStrings1, GeneratedStrings2)) { 712 Diags.Report(diag::err_cc1_round_trip_mismatch) << OptsName; 713 Diags.Report(diag::note_cc1_round_trip_generated) 714 << OptsName << 1 << SerializeArgs(GeneratedStrings1); 715 Diags.Report(diag::note_cc1_round_trip_generated) 716 << OptsName << 2 << SerializeArgs(GeneratedStrings2); 717 return false; 718 } 719 720 Diags.Report(diag::remark_cc1_round_trip_generated) 721 << OptsName << 1 << SerializeArgs(GeneratedStrings1); 722 Diags.Report(diag::remark_cc1_round_trip_generated) 723 << OptsName << 2 << SerializeArgs(GeneratedStrings2); 724 725 return Success2; 726 } 727 728 static void addDiagnosticArgs(ArgList &Args, OptSpecifier Group, 729 OptSpecifier GroupWithValue, 730 std::vector<std::string> &Diagnostics) { 731 for (auto *A : Args.filtered(Group)) { 732 if (A->getOption().getKind() == Option::FlagClass) { 733 // The argument is a pure flag (such as OPT_Wall or OPT_Wdeprecated). Add 734 // its name (minus the "W" or "R" at the beginning) to the diagnostics. 735 Diagnostics.push_back( 736 std::string(A->getOption().getName().drop_front(1))); 737 } else if (A->getOption().matches(GroupWithValue)) { 738 // This is -Wfoo= or -Rfoo=, where foo is the name of the diagnostic 739 // group. Add only the group name to the diagnostics. 740 Diagnostics.push_back( 741 std::string(A->getOption().getName().drop_front(1).rtrim("=-"))); 742 } else { 743 // Otherwise, add its value (for OPT_W_Joined and similar). 744 Diagnostics.push_back(A->getValue()); 745 } 746 } 747 } 748 749 // Parse the Static Analyzer configuration. If \p Diags is set to nullptr, 750 // it won't verify the input. 751 static void parseAnalyzerConfigs(AnalyzerOptions &AnOpts, 752 DiagnosticsEngine *Diags); 753 754 static void getAllNoBuiltinFuncValues(ArgList &Args, 755 std::vector<std::string> &Funcs) { 756 std::vector<std::string> Values = Args.getAllArgValues(OPT_fno_builtin_); 757 auto BuiltinEnd = llvm::partition(Values, [](const std::string FuncName) { 758 return Builtin::Context::isBuiltinFunc(FuncName); 759 }); 760 Funcs.insert(Funcs.end(), Values.begin(), BuiltinEnd); 761 } 762 763 static void GenerateAnalyzerArgs(AnalyzerOptions &Opts, 764 SmallVectorImpl<const char *> &Args, 765 CompilerInvocation::StringAllocator SA) { 766 const AnalyzerOptions *AnalyzerOpts = &Opts; 767 768 #define ANALYZER_OPTION_WITH_MARSHALLING( \ 769 PREFIX_TYPE, NAME, ID, KIND, GROUP, ALIAS, ALIASARGS, FLAGS, PARAM, \ 770 HELPTEXT, METAVAR, VALUES, SPELLING, SHOULD_PARSE, ALWAYS_EMIT, KEYPATH, \ 771 DEFAULT_VALUE, IMPLIED_CHECK, IMPLIED_VALUE, NORMALIZER, DENORMALIZER, \ 772 MERGER, EXTRACTOR, TABLE_INDEX) \ 773 GENERATE_OPTION_WITH_MARSHALLING( \ 774 Args, SA, KIND, FLAGS, SPELLING, ALWAYS_EMIT, KEYPATH, DEFAULT_VALUE, \ 775 IMPLIED_CHECK, IMPLIED_VALUE, DENORMALIZER, EXTRACTOR, TABLE_INDEX) 776 #include "clang/Driver/Options.inc" 777 #undef ANALYZER_OPTION_WITH_MARSHALLING 778 779 if (Opts.AnalysisStoreOpt != RegionStoreModel) { 780 switch (Opts.AnalysisStoreOpt) { 781 #define ANALYSIS_STORE(NAME, CMDFLAG, DESC, CREATFN) \ 782 case NAME##Model: \ 783 GenerateArg(Args, OPT_analyzer_store, CMDFLAG, SA); \ 784 break; 785 #include "clang/StaticAnalyzer/Core/Analyses.def" 786 default: 787 llvm_unreachable("Tried to generate unknown analysis store."); 788 } 789 } 790 791 if (Opts.AnalysisConstraintsOpt != RangeConstraintsModel) { 792 switch (Opts.AnalysisConstraintsOpt) { 793 #define ANALYSIS_CONSTRAINTS(NAME, CMDFLAG, DESC, CREATFN) \ 794 case NAME##Model: \ 795 GenerateArg(Args, OPT_analyzer_constraints, CMDFLAG, SA); \ 796 break; 797 #include "clang/StaticAnalyzer/Core/Analyses.def" 798 default: 799 llvm_unreachable("Tried to generate unknown analysis constraint."); 800 } 801 } 802 803 if (Opts.AnalysisDiagOpt != PD_HTML) { 804 switch (Opts.AnalysisDiagOpt) { 805 #define ANALYSIS_DIAGNOSTICS(NAME, CMDFLAG, DESC, CREATFN) \ 806 case PD_##NAME: \ 807 GenerateArg(Args, OPT_analyzer_output, CMDFLAG, SA); \ 808 break; 809 #include "clang/StaticAnalyzer/Core/Analyses.def" 810 default: 811 llvm_unreachable("Tried to generate unknown analysis diagnostic client."); 812 } 813 } 814 815 if (Opts.AnalysisPurgeOpt != PurgeStmt) { 816 switch (Opts.AnalysisPurgeOpt) { 817 #define ANALYSIS_PURGE(NAME, CMDFLAG, DESC) \ 818 case NAME: \ 819 GenerateArg(Args, OPT_analyzer_purge, CMDFLAG, SA); \ 820 break; 821 #include "clang/StaticAnalyzer/Core/Analyses.def" 822 default: 823 llvm_unreachable("Tried to generate unknown analysis purge mode."); 824 } 825 } 826 827 if (Opts.InliningMode != NoRedundancy) { 828 switch (Opts.InliningMode) { 829 #define ANALYSIS_INLINING_MODE(NAME, CMDFLAG, DESC) \ 830 case NAME: \ 831 GenerateArg(Args, OPT_analyzer_inlining_mode, CMDFLAG, SA); \ 832 break; 833 #include "clang/StaticAnalyzer/Core/Analyses.def" 834 default: 835 llvm_unreachable("Tried to generate unknown analysis inlining mode."); 836 } 837 } 838 839 for (const auto &CP : Opts.CheckersAndPackages) { 840 OptSpecifier Opt = 841 CP.second ? OPT_analyzer_checker : OPT_analyzer_disable_checker; 842 GenerateArg(Args, Opt, CP.first, SA); 843 } 844 845 AnalyzerOptions ConfigOpts; 846 parseAnalyzerConfigs(ConfigOpts, nullptr); 847 848 for (const auto &C : Opts.Config) { 849 // Don't generate anything that came from parseAnalyzerConfigs. It would be 850 // redundant and may not be valid on the command line. 851 auto Entry = ConfigOpts.Config.find(C.getKey()); 852 if (Entry != ConfigOpts.Config.end() && Entry->getValue() == C.getValue()) 853 continue; 854 855 GenerateArg(Args, OPT_analyzer_config, C.getKey() + "=" + C.getValue(), SA); 856 } 857 858 // Nothing to generate for FullCompilerInvocation. 859 } 860 861 static bool ParseAnalyzerArgsImpl(AnalyzerOptions &Opts, ArgList &Args, 862 DiagnosticsEngine &Diags) { 863 AnalyzerOptions *AnalyzerOpts = &Opts; 864 bool Success = true; 865 866 #define ANALYZER_OPTION_WITH_MARSHALLING( \ 867 PREFIX_TYPE, NAME, ID, KIND, GROUP, ALIAS, ALIASARGS, FLAGS, PARAM, \ 868 HELPTEXT, METAVAR, VALUES, SPELLING, SHOULD_PARSE, ALWAYS_EMIT, KEYPATH, \ 869 DEFAULT_VALUE, IMPLIED_CHECK, IMPLIED_VALUE, NORMALIZER, DENORMALIZER, \ 870 MERGER, EXTRACTOR, TABLE_INDEX) \ 871 PARSE_OPTION_WITH_MARSHALLING(Args, Diags, Success, ID, FLAGS, PARAM, \ 872 SHOULD_PARSE, KEYPATH, DEFAULT_VALUE, \ 873 IMPLIED_CHECK, IMPLIED_VALUE, NORMALIZER, \ 874 MERGER, TABLE_INDEX) 875 #include "clang/Driver/Options.inc" 876 #undef ANALYZER_OPTION_WITH_MARSHALLING 877 878 if (Arg *A = Args.getLastArg(OPT_analyzer_store)) { 879 StringRef Name = A->getValue(); 880 AnalysisStores Value = llvm::StringSwitch<AnalysisStores>(Name) 881 #define ANALYSIS_STORE(NAME, CMDFLAG, DESC, CREATFN) \ 882 .Case(CMDFLAG, NAME##Model) 883 #include "clang/StaticAnalyzer/Core/Analyses.def" 884 .Default(NumStores); 885 if (Value == NumStores) { 886 Diags.Report(diag::err_drv_invalid_value) 887 << A->getAsString(Args) << Name; 888 Success = false; 889 } else { 890 Opts.AnalysisStoreOpt = Value; 891 } 892 } 893 894 if (Arg *A = Args.getLastArg(OPT_analyzer_constraints)) { 895 StringRef Name = A->getValue(); 896 AnalysisConstraints Value = llvm::StringSwitch<AnalysisConstraints>(Name) 897 #define ANALYSIS_CONSTRAINTS(NAME, CMDFLAG, DESC, CREATFN) \ 898 .Case(CMDFLAG, NAME##Model) 899 #include "clang/StaticAnalyzer/Core/Analyses.def" 900 .Default(NumConstraints); 901 if (Value == NumConstraints) { 902 Diags.Report(diag::err_drv_invalid_value) 903 << A->getAsString(Args) << Name; 904 Success = false; 905 } else { 906 Opts.AnalysisConstraintsOpt = Value; 907 } 908 } 909 910 if (Arg *A = Args.getLastArg(OPT_analyzer_output)) { 911 StringRef Name = A->getValue(); 912 AnalysisDiagClients Value = llvm::StringSwitch<AnalysisDiagClients>(Name) 913 #define ANALYSIS_DIAGNOSTICS(NAME, CMDFLAG, DESC, CREATFN) \ 914 .Case(CMDFLAG, PD_##NAME) 915 #include "clang/StaticAnalyzer/Core/Analyses.def" 916 .Default(NUM_ANALYSIS_DIAG_CLIENTS); 917 if (Value == NUM_ANALYSIS_DIAG_CLIENTS) { 918 Diags.Report(diag::err_drv_invalid_value) 919 << A->getAsString(Args) << Name; 920 Success = false; 921 } else { 922 Opts.AnalysisDiagOpt = Value; 923 } 924 } 925 926 if (Arg *A = Args.getLastArg(OPT_analyzer_purge)) { 927 StringRef Name = A->getValue(); 928 AnalysisPurgeMode Value = llvm::StringSwitch<AnalysisPurgeMode>(Name) 929 #define ANALYSIS_PURGE(NAME, CMDFLAG, DESC) \ 930 .Case(CMDFLAG, NAME) 931 #include "clang/StaticAnalyzer/Core/Analyses.def" 932 .Default(NumPurgeModes); 933 if (Value == NumPurgeModes) { 934 Diags.Report(diag::err_drv_invalid_value) 935 << A->getAsString(Args) << Name; 936 Success = false; 937 } else { 938 Opts.AnalysisPurgeOpt = Value; 939 } 940 } 941 942 if (Arg *A = Args.getLastArg(OPT_analyzer_inlining_mode)) { 943 StringRef Name = A->getValue(); 944 AnalysisInliningMode Value = llvm::StringSwitch<AnalysisInliningMode>(Name) 945 #define ANALYSIS_INLINING_MODE(NAME, CMDFLAG, DESC) \ 946 .Case(CMDFLAG, NAME) 947 #include "clang/StaticAnalyzer/Core/Analyses.def" 948 .Default(NumInliningModes); 949 if (Value == NumInliningModes) { 950 Diags.Report(diag::err_drv_invalid_value) 951 << A->getAsString(Args) << Name; 952 Success = false; 953 } else { 954 Opts.InliningMode = Value; 955 } 956 } 957 958 Opts.CheckersAndPackages.clear(); 959 for (const Arg *A : 960 Args.filtered(OPT_analyzer_checker, OPT_analyzer_disable_checker)) { 961 A->claim(); 962 bool IsEnabled = A->getOption().getID() == OPT_analyzer_checker; 963 // We can have a list of comma separated checker names, e.g: 964 // '-analyzer-checker=cocoa,unix' 965 StringRef CheckerAndPackageList = A->getValue(); 966 SmallVector<StringRef, 16> CheckersAndPackages; 967 CheckerAndPackageList.split(CheckersAndPackages, ","); 968 for (const StringRef &CheckerOrPackage : CheckersAndPackages) 969 Opts.CheckersAndPackages.emplace_back(std::string(CheckerOrPackage), 970 IsEnabled); 971 } 972 973 // Go through the analyzer configuration options. 974 for (const auto *A : Args.filtered(OPT_analyzer_config)) { 975 976 // We can have a list of comma separated config names, e.g: 977 // '-analyzer-config key1=val1,key2=val2' 978 StringRef configList = A->getValue(); 979 SmallVector<StringRef, 4> configVals; 980 configList.split(configVals, ","); 981 for (const auto &configVal : configVals) { 982 StringRef key, val; 983 std::tie(key, val) = configVal.split("="); 984 if (val.empty()) { 985 Diags.Report(SourceLocation(), 986 diag::err_analyzer_config_no_value) << configVal; 987 Success = false; 988 break; 989 } 990 if (val.find('=') != StringRef::npos) { 991 Diags.Report(SourceLocation(), 992 diag::err_analyzer_config_multiple_values) 993 << configVal; 994 Success = false; 995 break; 996 } 997 998 // TODO: Check checker options too, possibly in CheckerRegistry. 999 // Leave unknown non-checker configs unclaimed. 1000 if (!key.contains(":") && Opts.isUnknownAnalyzerConfig(key)) { 1001 if (Opts.ShouldEmitErrorsOnInvalidConfigValue) { 1002 Diags.Report(diag::err_analyzer_config_unknown) << key; 1003 Success = false; 1004 } 1005 continue; 1006 } 1007 1008 A->claim(); 1009 Opts.Config[key] = std::string(val); 1010 } 1011 } 1012 1013 if (Opts.ShouldEmitErrorsOnInvalidConfigValue) 1014 parseAnalyzerConfigs(Opts, &Diags); 1015 else 1016 parseAnalyzerConfigs(Opts, nullptr); 1017 1018 llvm::raw_string_ostream os(Opts.FullCompilerInvocation); 1019 for (unsigned i = 0; i < Args.getNumInputArgStrings(); ++i) { 1020 if (i != 0) 1021 os << " "; 1022 os << Args.getArgString(i); 1023 } 1024 os.flush(); 1025 1026 return Success; 1027 } 1028 1029 static bool ParseAnalyzerArgs(CompilerInvocation &Res, AnalyzerOptions &Opts, 1030 ArgList &Args, DiagnosticsEngine &Diags) { 1031 auto DummyOpts = IntrusiveRefCntPtr<AnalyzerOptions>(new AnalyzerOptions()); 1032 1033 return RoundTrip( 1034 [](CompilerInvocation &Res, ArgList &Args, DiagnosticsEngine &Diags) { 1035 return ParseAnalyzerArgsImpl(*Res.getAnalyzerOpts(), Args, Diags); 1036 }, 1037 [](CompilerInvocation &Res, SmallVectorImpl<const char *> &Args, 1038 CompilerInvocation::StringAllocator SA) { 1039 GenerateAnalyzerArgs(*Res.getAnalyzerOpts(), Args, SA); 1040 }, 1041 [&DummyOpts](CompilerInvocation &Res) { 1042 Res.getAnalyzerOpts().swap(DummyOpts); 1043 }, 1044 Res, Args, Diags, "AnalyzerOptions"); 1045 } 1046 1047 static StringRef getStringOption(AnalyzerOptions::ConfigTable &Config, 1048 StringRef OptionName, StringRef DefaultVal) { 1049 return Config.insert({OptionName, std::string(DefaultVal)}).first->second; 1050 } 1051 1052 static void initOption(AnalyzerOptions::ConfigTable &Config, 1053 DiagnosticsEngine *Diags, 1054 StringRef &OptionField, StringRef Name, 1055 StringRef DefaultVal) { 1056 // String options may be known to invalid (e.g. if the expected string is a 1057 // file name, but the file does not exist), those will have to be checked in 1058 // parseConfigs. 1059 OptionField = getStringOption(Config, Name, DefaultVal); 1060 } 1061 1062 static void initOption(AnalyzerOptions::ConfigTable &Config, 1063 DiagnosticsEngine *Diags, 1064 bool &OptionField, StringRef Name, bool DefaultVal) { 1065 auto PossiblyInvalidVal = llvm::StringSwitch<Optional<bool>>( 1066 getStringOption(Config, Name, (DefaultVal ? "true" : "false"))) 1067 .Case("true", true) 1068 .Case("false", false) 1069 .Default(None); 1070 1071 if (!PossiblyInvalidVal) { 1072 if (Diags) 1073 Diags->Report(diag::err_analyzer_config_invalid_input) 1074 << Name << "a boolean"; 1075 else 1076 OptionField = DefaultVal; 1077 } else 1078 OptionField = PossiblyInvalidVal.getValue(); 1079 } 1080 1081 static void initOption(AnalyzerOptions::ConfigTable &Config, 1082 DiagnosticsEngine *Diags, 1083 unsigned &OptionField, StringRef Name, 1084 unsigned DefaultVal) { 1085 1086 OptionField = DefaultVal; 1087 bool HasFailed = getStringOption(Config, Name, std::to_string(DefaultVal)) 1088 .getAsInteger(0, OptionField); 1089 if (Diags && HasFailed) 1090 Diags->Report(diag::err_analyzer_config_invalid_input) 1091 << Name << "an unsigned"; 1092 } 1093 1094 static void parseAnalyzerConfigs(AnalyzerOptions &AnOpts, 1095 DiagnosticsEngine *Diags) { 1096 // TODO: There's no need to store the entire configtable, it'd be plenty 1097 // enough tostore checker options. 1098 1099 #define ANALYZER_OPTION(TYPE, NAME, CMDFLAG, DESC, DEFAULT_VAL) \ 1100 initOption(AnOpts.Config, Diags, AnOpts.NAME, CMDFLAG, DEFAULT_VAL); 1101 1102 #define ANALYZER_OPTION_DEPENDS_ON_USER_MODE(TYPE, NAME, CMDFLAG, DESC, \ 1103 SHALLOW_VAL, DEEP_VAL) \ 1104 switch (AnOpts.getUserMode()) { \ 1105 case UMK_Shallow: \ 1106 initOption(AnOpts.Config, Diags, AnOpts.NAME, CMDFLAG, SHALLOW_VAL); \ 1107 break; \ 1108 case UMK_Deep: \ 1109 initOption(AnOpts.Config, Diags, AnOpts.NAME, CMDFLAG, DEEP_VAL); \ 1110 break; \ 1111 } \ 1112 1113 #include "clang/StaticAnalyzer/Core/AnalyzerOptions.def" 1114 #undef ANALYZER_OPTION 1115 #undef ANALYZER_OPTION_DEPENDS_ON_USER_MODE 1116 1117 // At this point, AnalyzerOptions is configured. Let's validate some options. 1118 1119 // FIXME: Here we try to validate the silenced checkers or packages are valid. 1120 // The current approach only validates the registered checkers which does not 1121 // contain the runtime enabled checkers and optimally we would validate both. 1122 if (!AnOpts.RawSilencedCheckersAndPackages.empty()) { 1123 std::vector<StringRef> Checkers = 1124 AnOpts.getRegisteredCheckers(/*IncludeExperimental=*/true); 1125 std::vector<StringRef> Packages = 1126 AnOpts.getRegisteredPackages(/*IncludeExperimental=*/true); 1127 1128 SmallVector<StringRef, 16> CheckersAndPackages; 1129 AnOpts.RawSilencedCheckersAndPackages.split(CheckersAndPackages, ";"); 1130 1131 for (const StringRef &CheckerOrPackage : CheckersAndPackages) { 1132 if (Diags) { 1133 bool IsChecker = CheckerOrPackage.contains('.'); 1134 bool IsValidName = 1135 IsChecker 1136 ? llvm::find(Checkers, CheckerOrPackage) != Checkers.end() 1137 : llvm::find(Packages, CheckerOrPackage) != Packages.end(); 1138 1139 if (!IsValidName) 1140 Diags->Report(diag::err_unknown_analyzer_checker_or_package) 1141 << CheckerOrPackage; 1142 } 1143 1144 AnOpts.SilencedCheckersAndPackages.emplace_back(CheckerOrPackage); 1145 } 1146 } 1147 1148 if (!Diags) 1149 return; 1150 1151 if (AnOpts.ShouldTrackConditionsDebug && !AnOpts.ShouldTrackConditions) 1152 Diags->Report(diag::err_analyzer_config_invalid_input) 1153 << "track-conditions-debug" << "'track-conditions' to also be enabled"; 1154 1155 if (!AnOpts.CTUDir.empty() && !llvm::sys::fs::is_directory(AnOpts.CTUDir)) 1156 Diags->Report(diag::err_analyzer_config_invalid_input) << "ctu-dir" 1157 << "a filename"; 1158 1159 if (!AnOpts.ModelPath.empty() && 1160 !llvm::sys::fs::is_directory(AnOpts.ModelPath)) 1161 Diags->Report(diag::err_analyzer_config_invalid_input) << "model-path" 1162 << "a filename"; 1163 } 1164 1165 /// Create a new Regex instance out of the string value in \p RpassArg. 1166 /// It returns the string and a pointer to the newly generated Regex instance. 1167 static CodeGenOptions::RemarkPattern 1168 GenerateOptimizationRemarkRegex(DiagnosticsEngine &Diags, ArgList &Args, 1169 Arg *RpassArg) { 1170 StringRef Val = RpassArg->getValue(); 1171 std::string RegexError; 1172 std::shared_ptr<llvm::Regex> Pattern = std::make_shared<llvm::Regex>(Val); 1173 if (!Pattern->isValid(RegexError)) { 1174 Diags.Report(diag::err_drv_optimization_remark_pattern) 1175 << RegexError << RpassArg->getAsString(Args); 1176 Pattern.reset(); 1177 } 1178 return {std::string(Val), Pattern}; 1179 } 1180 1181 static bool parseDiagnosticLevelMask(StringRef FlagName, 1182 const std::vector<std::string> &Levels, 1183 DiagnosticsEngine &Diags, 1184 DiagnosticLevelMask &M) { 1185 bool Success = true; 1186 for (const auto &Level : Levels) { 1187 DiagnosticLevelMask const PM = 1188 llvm::StringSwitch<DiagnosticLevelMask>(Level) 1189 .Case("note", DiagnosticLevelMask::Note) 1190 .Case("remark", DiagnosticLevelMask::Remark) 1191 .Case("warning", DiagnosticLevelMask::Warning) 1192 .Case("error", DiagnosticLevelMask::Error) 1193 .Default(DiagnosticLevelMask::None); 1194 if (PM == DiagnosticLevelMask::None) { 1195 Success = false; 1196 Diags.Report(diag::err_drv_invalid_value) << FlagName << Level; 1197 } 1198 M = M | PM; 1199 } 1200 return Success; 1201 } 1202 1203 static void parseSanitizerKinds(StringRef FlagName, 1204 const std::vector<std::string> &Sanitizers, 1205 DiagnosticsEngine &Diags, SanitizerSet &S) { 1206 for (const auto &Sanitizer : Sanitizers) { 1207 SanitizerMask K = parseSanitizerValue(Sanitizer, /*AllowGroups=*/false); 1208 if (K == SanitizerMask()) 1209 Diags.Report(diag::err_drv_invalid_value) << FlagName << Sanitizer; 1210 else 1211 S.set(K, true); 1212 } 1213 } 1214 1215 static SmallVector<StringRef, 4> serializeSanitizerKinds(SanitizerSet S) { 1216 SmallVector<StringRef, 4> Values; 1217 serializeSanitizerSet(S, Values); 1218 return Values; 1219 } 1220 1221 static void parseXRayInstrumentationBundle(StringRef FlagName, StringRef Bundle, 1222 ArgList &Args, DiagnosticsEngine &D, 1223 XRayInstrSet &S) { 1224 llvm::SmallVector<StringRef, 2> BundleParts; 1225 llvm::SplitString(Bundle, BundleParts, ","); 1226 for (const auto &B : BundleParts) { 1227 auto Mask = parseXRayInstrValue(B); 1228 if (Mask == XRayInstrKind::None) 1229 if (B != "none") 1230 D.Report(diag::err_drv_invalid_value) << FlagName << Bundle; 1231 else 1232 S.Mask = Mask; 1233 else if (Mask == XRayInstrKind::All) 1234 S.Mask = Mask; 1235 else 1236 S.set(Mask, true); 1237 } 1238 } 1239 1240 static std::string serializeXRayInstrumentationBundle(const XRayInstrSet &S) { 1241 llvm::SmallVector<StringRef, 2> BundleParts; 1242 serializeXRayInstrValue(S, BundleParts); 1243 std::string Buffer; 1244 llvm::raw_string_ostream OS(Buffer); 1245 llvm::interleave(BundleParts, OS, [&OS](StringRef Part) { OS << Part; }, ","); 1246 return OS.str(); 1247 } 1248 1249 // Set the profile kind using fprofile-instrument-use-path. 1250 static void setPGOUseInstrumentor(CodeGenOptions &Opts, 1251 const Twine &ProfileName) { 1252 auto ReaderOrErr = llvm::IndexedInstrProfReader::create(ProfileName); 1253 // In error, return silently and let Clang PGOUse report the error message. 1254 if (auto E = ReaderOrErr.takeError()) { 1255 llvm::consumeError(std::move(E)); 1256 Opts.setProfileUse(CodeGenOptions::ProfileClangInstr); 1257 return; 1258 } 1259 std::unique_ptr<llvm::IndexedInstrProfReader> PGOReader = 1260 std::move(ReaderOrErr.get()); 1261 if (PGOReader->isIRLevelProfile()) { 1262 if (PGOReader->hasCSIRLevelProfile()) 1263 Opts.setProfileUse(CodeGenOptions::ProfileCSIRInstr); 1264 else 1265 Opts.setProfileUse(CodeGenOptions::ProfileIRInstr); 1266 } else 1267 Opts.setProfileUse(CodeGenOptions::ProfileClangInstr); 1268 } 1269 1270 void CompilerInvocation::GenerateCodeGenArgs( 1271 const CodeGenOptions &Opts, SmallVectorImpl<const char *> &Args, 1272 StringAllocator SA, const llvm::Triple &T, const std::string &OutputFile, 1273 const LangOptions *LangOpts) { 1274 const CodeGenOptions &CodeGenOpts = Opts; 1275 1276 if (Opts.OptimizationLevel == 0) 1277 GenerateArg(Args, OPT_O0, SA); 1278 else 1279 GenerateArg(Args, OPT_O, Twine(Opts.OptimizationLevel), SA); 1280 1281 #define CODEGEN_OPTION_WITH_MARSHALLING( \ 1282 PREFIX_TYPE, NAME, ID, KIND, GROUP, ALIAS, ALIASARGS, FLAGS, PARAM, \ 1283 HELPTEXT, METAVAR, VALUES, SPELLING, SHOULD_PARSE, ALWAYS_EMIT, KEYPATH, \ 1284 DEFAULT_VALUE, IMPLIED_CHECK, IMPLIED_VALUE, NORMALIZER, DENORMALIZER, \ 1285 MERGER, EXTRACTOR, TABLE_INDEX) \ 1286 GENERATE_OPTION_WITH_MARSHALLING( \ 1287 Args, SA, KIND, FLAGS, SPELLING, ALWAYS_EMIT, KEYPATH, DEFAULT_VALUE, \ 1288 IMPLIED_CHECK, IMPLIED_VALUE, DENORMALIZER, EXTRACTOR, TABLE_INDEX) 1289 #include "clang/Driver/Options.inc" 1290 #undef CODEGEN_OPTION_WITH_MARSHALLING 1291 1292 if (Opts.OptimizationLevel > 0) { 1293 if (Opts.Inlining == CodeGenOptions::NormalInlining) 1294 GenerateArg(Args, OPT_finline_functions, SA); 1295 else if (Opts.Inlining == CodeGenOptions::OnlyHintInlining) 1296 GenerateArg(Args, OPT_finline_hint_functions, SA); 1297 else if (Opts.Inlining == CodeGenOptions::OnlyAlwaysInlining) 1298 GenerateArg(Args, OPT_fno_inline, SA); 1299 } 1300 1301 if (Opts.DirectAccessExternalData && LangOpts->PICLevel != 0) 1302 GenerateArg(Args, OPT_fdirect_access_external_data, SA); 1303 else if (!Opts.DirectAccessExternalData && LangOpts->PICLevel == 0) 1304 GenerateArg(Args, OPT_fno_direct_access_external_data, SA); 1305 1306 Optional<StringRef> DebugInfoVal; 1307 switch (Opts.DebugInfo) { 1308 case codegenoptions::DebugLineTablesOnly: 1309 DebugInfoVal = "line-tables-only"; 1310 break; 1311 case codegenoptions::DebugDirectivesOnly: 1312 DebugInfoVal = "line-directives-only"; 1313 break; 1314 case codegenoptions::DebugInfoConstructor: 1315 DebugInfoVal = "constructor"; 1316 break; 1317 case codegenoptions::LimitedDebugInfo: 1318 DebugInfoVal = "limited"; 1319 break; 1320 case codegenoptions::FullDebugInfo: 1321 DebugInfoVal = "standalone"; 1322 break; 1323 case codegenoptions::UnusedTypeInfo: 1324 DebugInfoVal = "unused-types"; 1325 break; 1326 case codegenoptions::NoDebugInfo: // default value 1327 DebugInfoVal = None; 1328 break; 1329 case codegenoptions::LocTrackingOnly: // implied value 1330 DebugInfoVal = None; 1331 break; 1332 } 1333 if (DebugInfoVal) 1334 GenerateArg(Args, OPT_debug_info_kind_EQ, *DebugInfoVal, SA); 1335 1336 if (Opts.DebugInfo == codegenoptions::DebugInfoConstructor) 1337 GenerateArg(Args, OPT_fuse_ctor_homing, SA); 1338 1339 for (const auto &Prefix : Opts.DebugPrefixMap) 1340 GenerateArg(Args, OPT_fdebug_prefix_map_EQ, 1341 Prefix.first + "=" + Prefix.second, SA); 1342 1343 for (const auto &Prefix : Opts.ProfilePrefixMap) 1344 GenerateArg(Args, OPT_fprofile_prefix_map_EQ, 1345 Prefix.first + "=" + Prefix.second, SA); 1346 1347 if (Opts.NewStructPathTBAA) 1348 GenerateArg(Args, OPT_new_struct_path_tbaa, SA); 1349 1350 if (Opts.OptimizeSize == 1) 1351 GenerateArg(Args, OPT_O, "s", SA); 1352 else if (Opts.OptimizeSize == 2) 1353 GenerateArg(Args, OPT_O, "z", SA); 1354 1355 // SimplifyLibCalls is set only in the absence of -fno-builtin and 1356 // -ffreestanding. We'll consider that when generating them. 1357 1358 // NoBuiltinFuncs are generated by LangOptions. 1359 1360 if (Opts.UnrollLoops && Opts.OptimizationLevel <= 1) 1361 GenerateArg(Args, OPT_funroll_loops, SA); 1362 else if (!Opts.UnrollLoops && Opts.OptimizationLevel > 1) 1363 GenerateArg(Args, OPT_fno_unroll_loops, SA); 1364 1365 if (!Opts.BinutilsVersion.empty()) 1366 GenerateArg(Args, OPT_fbinutils_version_EQ, Opts.BinutilsVersion, SA); 1367 1368 if (Opts.DebugNameTable == 1369 static_cast<unsigned>(llvm::DICompileUnit::DebugNameTableKind::GNU)) 1370 GenerateArg(Args, OPT_ggnu_pubnames, SA); 1371 else if (Opts.DebugNameTable == 1372 static_cast<unsigned>( 1373 llvm::DICompileUnit::DebugNameTableKind::Default)) 1374 GenerateArg(Args, OPT_gpubnames, SA); 1375 1376 // ProfileInstrumentUsePath is marshalled automatically, no need to generate 1377 // it or PGOUseInstrumentor. 1378 1379 if (Opts.TimePasses) { 1380 if (Opts.TimePassesPerRun) 1381 GenerateArg(Args, OPT_ftime_report_EQ, "per-pass-run", SA); 1382 else 1383 GenerateArg(Args, OPT_ftime_report, SA); 1384 } 1385 1386 if (Opts.FunctionSections && 1387 (Opts.BBSections == "none" || Opts.BBSections == "labels")) 1388 GenerateArg(Args, OPT_ffunction_sections, SA); 1389 1390 if (Opts.PrepareForLTO && !Opts.PrepareForThinLTO) 1391 GenerateArg(Args, OPT_flto, SA); 1392 1393 if (Opts.PrepareForThinLTO) 1394 GenerateArg(Args, OPT_flto_EQ, "thin", SA); 1395 1396 if (!Opts.ThinLTOIndexFile.empty()) 1397 GenerateArg(Args, OPT_fthinlto_index_EQ, Opts.ThinLTOIndexFile, SA); 1398 1399 if (Opts.SaveTempsFilePrefix == OutputFile) 1400 GenerateArg(Args, OPT_save_temps_EQ, "obj", SA); 1401 1402 StringRef MemProfileBasename("memprof.profraw"); 1403 if (!Opts.MemoryProfileOutput.empty()) { 1404 if (Opts.MemoryProfileOutput == MemProfileBasename) { 1405 GenerateArg(Args, OPT_fmemory_profile, SA); 1406 } else { 1407 size_t ArgLength = 1408 Opts.MemoryProfileOutput.size() - MemProfileBasename.size(); 1409 GenerateArg(Args, OPT_fmemory_profile_EQ, 1410 Opts.MemoryProfileOutput.substr(0, ArgLength), SA); 1411 } 1412 } 1413 1414 if (memcmp(Opts.CoverageVersion, "408*", 4) != 0) 1415 GenerateArg(Args, OPT_coverage_version_EQ, Opts.CoverageVersion, SA); 1416 1417 // TODO: Check if we need to generate arguments stored in CmdArgs. (Namely 1418 // '-fembed_bitcode', which does not map to any CompilerInvocation field and 1419 // won't be generated.) 1420 1421 if (Opts.XRayInstrumentationBundle.Mask != XRayInstrKind::All) { 1422 std::string InstrBundle = 1423 serializeXRayInstrumentationBundle(Opts.XRayInstrumentationBundle); 1424 if (!InstrBundle.empty()) 1425 GenerateArg(Args, OPT_fxray_instrumentation_bundle, InstrBundle, SA); 1426 } 1427 1428 if (Opts.CFProtectionReturn && Opts.CFProtectionBranch) 1429 GenerateArg(Args, OPT_fcf_protection_EQ, "full", SA); 1430 else if (Opts.CFProtectionReturn) 1431 GenerateArg(Args, OPT_fcf_protection_EQ, "return", SA); 1432 else if (Opts.CFProtectionBranch) 1433 GenerateArg(Args, OPT_fcf_protection_EQ, "branch", SA); 1434 1435 for (const auto &F : Opts.LinkBitcodeFiles) { 1436 bool Builtint = F.LinkFlags == llvm::Linker::Flags::LinkOnlyNeeded && 1437 F.PropagateAttrs && F.Internalize; 1438 GenerateArg(Args, 1439 Builtint ? OPT_mlink_builtin_bitcode : OPT_mlink_bitcode_file, 1440 F.Filename, SA); 1441 } 1442 1443 // TODO: Consider removing marshalling annotations from f[no_]emulated_tls. 1444 // That would make it easy to generate the option only **once** if it was 1445 // explicitly set to non-default value. 1446 if (Opts.ExplicitEmulatedTLS) { 1447 GenerateArg( 1448 Args, Opts.EmulatedTLS ? OPT_femulated_tls : OPT_fno_emulated_tls, SA); 1449 } 1450 1451 if (Opts.FPDenormalMode != llvm::DenormalMode::getIEEE()) { 1452 std::string Buffer; 1453 llvm::raw_string_ostream OS(Buffer); 1454 Opts.FPDenormalMode.print(OS); 1455 GenerateArg(Args, OPT_fdenormal_fp_math_EQ, OS.str(), SA); 1456 } 1457 1458 if (Opts.FP32DenormalMode != llvm::DenormalMode::getIEEE()) { 1459 std::string Buffer; 1460 llvm::raw_string_ostream OS(Buffer); 1461 Opts.FP32DenormalMode.print(OS); 1462 GenerateArg(Args, OPT_fdenormal_fp_math_f32_EQ, OS.str(), SA); 1463 } 1464 1465 if (Opts.StructReturnConvention == CodeGenOptions::SRCK_OnStack) { 1466 OptSpecifier Opt = 1467 T.isPPC32() ? OPT_maix_struct_return : OPT_fpcc_struct_return; 1468 GenerateArg(Args, Opt, SA); 1469 } else if (Opts.StructReturnConvention == CodeGenOptions::SRCK_InRegs) { 1470 OptSpecifier Opt = 1471 T.isPPC32() ? OPT_msvr4_struct_return : OPT_freg_struct_return; 1472 GenerateArg(Args, Opt, SA); 1473 } 1474 1475 if (Opts.IgnoreXCOFFVisibility) 1476 GenerateArg(Args, OPT_mignore_xcoff_visibility, SA); 1477 1478 if (Opts.EnableAIXExtendedAltivecABI) 1479 GenerateArg(Args, OPT_mabi_EQ_vec_extabi, SA); 1480 1481 if (!Opts.OptRecordPasses.empty()) 1482 GenerateArg(Args, OPT_opt_record_passes, Opts.OptRecordPasses, SA); 1483 1484 if (!Opts.OptRecordFormat.empty()) 1485 GenerateArg(Args, OPT_opt_record_format, Opts.OptRecordFormat, SA); 1486 1487 if (Opts.OptimizationRemarkPattern) 1488 GenerateArg(Args, OPT_Rpass_EQ, Opts.OptimizationRemarkPattern.Pattern, SA); 1489 1490 if (Opts.OptimizationRemarkMissedPattern) 1491 GenerateArg(Args, OPT_Rpass_missed_EQ, 1492 Opts.OptimizationRemarkMissedPattern.Pattern, SA); 1493 1494 if (Opts.OptimizationRemarkAnalysisPattern) 1495 GenerateArg(Args, OPT_Rpass_analysis_EQ, 1496 Opts.OptimizationRemarkAnalysisPattern.Pattern, SA); 1497 1498 GenerateArg(Args, OPT_fdiagnostics_hotness_threshold_EQ, 1499 Opts.DiagnosticsHotnessThreshold 1500 ? Twine(*Opts.DiagnosticsHotnessThreshold) 1501 : "auto", 1502 SA); 1503 1504 for (StringRef Sanitizer : serializeSanitizerKinds(Opts.SanitizeRecover)) 1505 GenerateArg(Args, OPT_fsanitize_recover_EQ, Sanitizer, SA); 1506 1507 for (StringRef Sanitizer : serializeSanitizerKinds(Opts.SanitizeTrap)) 1508 GenerateArg(Args, OPT_fsanitize_trap_EQ, Sanitizer, SA); 1509 1510 if (!Opts.EmitVersionIdentMetadata) 1511 GenerateArg(Args, OPT_Qn, SA); 1512 } 1513 1514 bool CompilerInvocation::ParseCodeGenArgsImpl(CodeGenOptions &Opts, 1515 ArgList &Args, InputKind IK, 1516 DiagnosticsEngine &Diags, 1517 const llvm::Triple &T, 1518 const std::string &OutputFile, 1519 const LangOptions &LangOptsRef) { 1520 unsigned NumErrorsBefore = Diags.getNumErrors(); 1521 1522 bool Success = true; 1523 1524 unsigned OptimizationLevel = getOptimizationLevel(Args, IK, Diags); 1525 // TODO: This could be done in Driver 1526 unsigned MaxOptLevel = 3; 1527 if (OptimizationLevel > MaxOptLevel) { 1528 // If the optimization level is not supported, fall back on the default 1529 // optimization 1530 Diags.Report(diag::warn_drv_optimization_value) 1531 << Args.getLastArg(OPT_O)->getAsString(Args) << "-O" << MaxOptLevel; 1532 OptimizationLevel = MaxOptLevel; 1533 } 1534 Opts.OptimizationLevel = OptimizationLevel; 1535 1536 // The key paths of codegen options defined in Options.td start with 1537 // "CodeGenOpts.". Let's provide the expected variable name and type. 1538 CodeGenOptions &CodeGenOpts = Opts; 1539 // Some codegen options depend on language options. Let's provide the expected 1540 // variable name and type. 1541 const LangOptions *LangOpts = &LangOptsRef; 1542 1543 #define CODEGEN_OPTION_WITH_MARSHALLING( \ 1544 PREFIX_TYPE, NAME, ID, KIND, GROUP, ALIAS, ALIASARGS, FLAGS, PARAM, \ 1545 HELPTEXT, METAVAR, VALUES, SPELLING, SHOULD_PARSE, ALWAYS_EMIT, KEYPATH, \ 1546 DEFAULT_VALUE, IMPLIED_CHECK, IMPLIED_VALUE, NORMALIZER, DENORMALIZER, \ 1547 MERGER, EXTRACTOR, TABLE_INDEX) \ 1548 PARSE_OPTION_WITH_MARSHALLING(Args, Diags, Success, ID, FLAGS, PARAM, \ 1549 SHOULD_PARSE, KEYPATH, DEFAULT_VALUE, \ 1550 IMPLIED_CHECK, IMPLIED_VALUE, NORMALIZER, \ 1551 MERGER, TABLE_INDEX) 1552 #include "clang/Driver/Options.inc" 1553 #undef CODEGEN_OPTION_WITH_MARSHALLING 1554 1555 // At O0 we want to fully disable inlining outside of cases marked with 1556 // 'alwaysinline' that are required for correctness. 1557 Opts.setInlining((Opts.OptimizationLevel == 0) 1558 ? CodeGenOptions::OnlyAlwaysInlining 1559 : CodeGenOptions::NormalInlining); 1560 // Explicit inlining flags can disable some or all inlining even at 1561 // optimization levels above zero. 1562 if (Arg *InlineArg = Args.getLastArg( 1563 options::OPT_finline_functions, options::OPT_finline_hint_functions, 1564 options::OPT_fno_inline_functions, options::OPT_fno_inline)) { 1565 if (Opts.OptimizationLevel > 0) { 1566 const Option &InlineOpt = InlineArg->getOption(); 1567 if (InlineOpt.matches(options::OPT_finline_functions)) 1568 Opts.setInlining(CodeGenOptions::NormalInlining); 1569 else if (InlineOpt.matches(options::OPT_finline_hint_functions)) 1570 Opts.setInlining(CodeGenOptions::OnlyHintInlining); 1571 else 1572 Opts.setInlining(CodeGenOptions::OnlyAlwaysInlining); 1573 } 1574 } 1575 1576 // PIC defaults to -fno-direct-access-external-data while non-PIC defaults to 1577 // -fdirect-access-external-data. 1578 Opts.DirectAccessExternalData = 1579 Args.hasArg(OPT_fdirect_access_external_data) || 1580 (!Args.hasArg(OPT_fno_direct_access_external_data) && 1581 LangOpts->PICLevel == 0); 1582 1583 if (Arg *A = Args.getLastArg(OPT_debug_info_kind_EQ)) { 1584 unsigned Val = 1585 llvm::StringSwitch<unsigned>(A->getValue()) 1586 .Case("line-tables-only", codegenoptions::DebugLineTablesOnly) 1587 .Case("line-directives-only", codegenoptions::DebugDirectivesOnly) 1588 .Case("constructor", codegenoptions::DebugInfoConstructor) 1589 .Case("limited", codegenoptions::LimitedDebugInfo) 1590 .Case("standalone", codegenoptions::FullDebugInfo) 1591 .Case("unused-types", codegenoptions::UnusedTypeInfo) 1592 .Default(~0U); 1593 if (Val == ~0U) 1594 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) 1595 << A->getValue(); 1596 else 1597 Opts.setDebugInfo(static_cast<codegenoptions::DebugInfoKind>(Val)); 1598 } 1599 1600 // If -fuse-ctor-homing is set and limited debug info is already on, then use 1601 // constructor homing. 1602 if (Args.getLastArg(OPT_fuse_ctor_homing)) 1603 if (Opts.getDebugInfo() == codegenoptions::LimitedDebugInfo) 1604 Opts.setDebugInfo(codegenoptions::DebugInfoConstructor); 1605 1606 for (const auto &Arg : Args.getAllArgValues(OPT_fdebug_prefix_map_EQ)) { 1607 auto Split = StringRef(Arg).split('='); 1608 Opts.DebugPrefixMap.insert( 1609 {std::string(Split.first), std::string(Split.second)}); 1610 } 1611 1612 for (const auto &Arg : Args.getAllArgValues(OPT_fprofile_prefix_map_EQ)) { 1613 auto Split = StringRef(Arg).split('='); 1614 Opts.ProfilePrefixMap.insert( 1615 {std::string(Split.first), std::string(Split.second)}); 1616 } 1617 1618 const llvm::Triple::ArchType DebugEntryValueArchs[] = { 1619 llvm::Triple::x86, llvm::Triple::x86_64, llvm::Triple::aarch64, 1620 llvm::Triple::arm, llvm::Triple::armeb, llvm::Triple::mips, 1621 llvm::Triple::mipsel, llvm::Triple::mips64, llvm::Triple::mips64el}; 1622 1623 if (Opts.OptimizationLevel > 0 && Opts.hasReducedDebugInfo() && 1624 llvm::is_contained(DebugEntryValueArchs, T.getArch())) 1625 Opts.EmitCallSiteInfo = true; 1626 1627 Opts.NewStructPathTBAA = !Args.hasArg(OPT_no_struct_path_tbaa) && 1628 Args.hasArg(OPT_new_struct_path_tbaa); 1629 Opts.OptimizeSize = getOptimizationLevelSize(Args); 1630 Opts.SimplifyLibCalls = !LangOpts->NoBuiltin; 1631 if (Opts.SimplifyLibCalls) 1632 Opts.NoBuiltinFuncs = LangOpts->NoBuiltinFuncs; 1633 Opts.UnrollLoops = 1634 Args.hasFlag(OPT_funroll_loops, OPT_fno_unroll_loops, 1635 (Opts.OptimizationLevel > 1)); 1636 1637 Opts.BinutilsVersion = 1638 std::string(Args.getLastArgValue(OPT_fbinutils_version_EQ)); 1639 1640 Opts.DebugNameTable = static_cast<unsigned>( 1641 Args.hasArg(OPT_ggnu_pubnames) 1642 ? llvm::DICompileUnit::DebugNameTableKind::GNU 1643 : Args.hasArg(OPT_gpubnames) 1644 ? llvm::DICompileUnit::DebugNameTableKind::Default 1645 : llvm::DICompileUnit::DebugNameTableKind::None); 1646 1647 if (!Opts.ProfileInstrumentUsePath.empty()) 1648 setPGOUseInstrumentor(Opts, Opts.ProfileInstrumentUsePath); 1649 1650 if (const Arg *A = Args.getLastArg(OPT_ftime_report, OPT_ftime_report_EQ)) { 1651 Opts.TimePasses = true; 1652 1653 // -ftime-report= is only for new pass manager. 1654 if (A->getOption().getID() == OPT_ftime_report_EQ) { 1655 if (Opts.LegacyPassManager) 1656 Diags.Report(diag::err_drv_argument_only_allowed_with) 1657 << A->getAsString(Args) << "-fno-legacy-pass-manager"; 1658 1659 StringRef Val = A->getValue(); 1660 if (Val == "per-pass") 1661 Opts.TimePassesPerRun = false; 1662 else if (Val == "per-pass-run") 1663 Opts.TimePassesPerRun = true; 1664 else 1665 Diags.Report(diag::err_drv_invalid_value) 1666 << A->getAsString(Args) << A->getValue(); 1667 } 1668 } 1669 1670 // Basic Block Sections implies Function Sections. 1671 Opts.FunctionSections = 1672 Args.hasArg(OPT_ffunction_sections) || 1673 (Opts.BBSections != "none" && Opts.BBSections != "labels"); 1674 1675 Opts.PrepareForLTO = Args.hasArg(OPT_flto, OPT_flto_EQ); 1676 Opts.PrepareForThinLTO = false; 1677 if (Arg *A = Args.getLastArg(OPT_flto_EQ)) { 1678 StringRef S = A->getValue(); 1679 if (S == "thin") 1680 Opts.PrepareForThinLTO = true; 1681 else if (S != "full") 1682 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << S; 1683 } 1684 if (Arg *A = Args.getLastArg(OPT_fthinlto_index_EQ)) { 1685 if (IK.getLanguage() != Language::LLVM_IR) 1686 Diags.Report(diag::err_drv_argument_only_allowed_with) 1687 << A->getAsString(Args) << "-x ir"; 1688 Opts.ThinLTOIndexFile = 1689 std::string(Args.getLastArgValue(OPT_fthinlto_index_EQ)); 1690 } 1691 if (Arg *A = Args.getLastArg(OPT_save_temps_EQ)) 1692 Opts.SaveTempsFilePrefix = 1693 llvm::StringSwitch<std::string>(A->getValue()) 1694 .Case("obj", OutputFile) 1695 .Default(llvm::sys::path::filename(OutputFile).str()); 1696 1697 // The memory profile runtime appends the pid to make this name more unique. 1698 const char *MemProfileBasename = "memprof.profraw"; 1699 if (Args.hasArg(OPT_fmemory_profile_EQ)) { 1700 SmallString<128> Path( 1701 std::string(Args.getLastArgValue(OPT_fmemory_profile_EQ))); 1702 llvm::sys::path::append(Path, MemProfileBasename); 1703 Opts.MemoryProfileOutput = std::string(Path); 1704 } else if (Args.hasArg(OPT_fmemory_profile)) 1705 Opts.MemoryProfileOutput = MemProfileBasename; 1706 1707 memcpy(Opts.CoverageVersion, "408*", 4); 1708 if (Opts.EmitGcovArcs || Opts.EmitGcovNotes) { 1709 if (Args.hasArg(OPT_coverage_version_EQ)) { 1710 StringRef CoverageVersion = Args.getLastArgValue(OPT_coverage_version_EQ); 1711 if (CoverageVersion.size() != 4) { 1712 Diags.Report(diag::err_drv_invalid_value) 1713 << Args.getLastArg(OPT_coverage_version_EQ)->getAsString(Args) 1714 << CoverageVersion; 1715 } else { 1716 memcpy(Opts.CoverageVersion, CoverageVersion.data(), 4); 1717 } 1718 } 1719 } 1720 // FIXME: For backend options that are not yet recorded as function 1721 // attributes in the IR, keep track of them so we can embed them in a 1722 // separate data section and use them when building the bitcode. 1723 for (const auto &A : Args) { 1724 // Do not encode output and input. 1725 if (A->getOption().getID() == options::OPT_o || 1726 A->getOption().getID() == options::OPT_INPUT || 1727 A->getOption().getID() == options::OPT_x || 1728 A->getOption().getID() == options::OPT_fembed_bitcode || 1729 A->getOption().matches(options::OPT_W_Group)) 1730 continue; 1731 ArgStringList ASL; 1732 A->render(Args, ASL); 1733 for (const auto &arg : ASL) { 1734 StringRef ArgStr(arg); 1735 Opts.CmdArgs.insert(Opts.CmdArgs.end(), ArgStr.begin(), ArgStr.end()); 1736 // using \00 to separate each commandline options. 1737 Opts.CmdArgs.push_back('\0'); 1738 } 1739 } 1740 1741 auto XRayInstrBundles = 1742 Args.getAllArgValues(OPT_fxray_instrumentation_bundle); 1743 if (XRayInstrBundles.empty()) 1744 Opts.XRayInstrumentationBundle.Mask = XRayInstrKind::All; 1745 else 1746 for (const auto &A : XRayInstrBundles) 1747 parseXRayInstrumentationBundle("-fxray-instrumentation-bundle=", A, Args, 1748 Diags, Opts.XRayInstrumentationBundle); 1749 1750 if (const Arg *A = Args.getLastArg(OPT_fcf_protection_EQ)) { 1751 StringRef Name = A->getValue(); 1752 if (Name == "full") { 1753 Opts.CFProtectionReturn = 1; 1754 Opts.CFProtectionBranch = 1; 1755 } else if (Name == "return") 1756 Opts.CFProtectionReturn = 1; 1757 else if (Name == "branch") 1758 Opts.CFProtectionBranch = 1; 1759 else if (Name != "none") { 1760 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Name; 1761 Success = false; 1762 } 1763 } 1764 1765 for (auto *A : 1766 Args.filtered(OPT_mlink_bitcode_file, OPT_mlink_builtin_bitcode)) { 1767 CodeGenOptions::BitcodeFileToLink F; 1768 F.Filename = A->getValue(); 1769 if (A->getOption().matches(OPT_mlink_builtin_bitcode)) { 1770 F.LinkFlags = llvm::Linker::Flags::LinkOnlyNeeded; 1771 // When linking CUDA bitcode, propagate function attributes so that 1772 // e.g. libdevice gets fast-math attrs if we're building with fast-math. 1773 F.PropagateAttrs = true; 1774 F.Internalize = true; 1775 } 1776 Opts.LinkBitcodeFiles.push_back(F); 1777 } 1778 1779 if (Args.getLastArg(OPT_femulated_tls) || 1780 Args.getLastArg(OPT_fno_emulated_tls)) { 1781 Opts.ExplicitEmulatedTLS = true; 1782 } 1783 1784 if (Arg *A = Args.getLastArg(OPT_fdenormal_fp_math_EQ)) { 1785 StringRef Val = A->getValue(); 1786 Opts.FPDenormalMode = llvm::parseDenormalFPAttribute(Val); 1787 if (!Opts.FPDenormalMode.isValid()) 1788 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Val; 1789 } 1790 1791 if (Arg *A = Args.getLastArg(OPT_fdenormal_fp_math_f32_EQ)) { 1792 StringRef Val = A->getValue(); 1793 Opts.FP32DenormalMode = llvm::parseDenormalFPAttribute(Val); 1794 if (!Opts.FP32DenormalMode.isValid()) 1795 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Val; 1796 } 1797 1798 // X86_32 has -fppc-struct-return and -freg-struct-return. 1799 // PPC32 has -maix-struct-return and -msvr4-struct-return. 1800 if (Arg *A = 1801 Args.getLastArg(OPT_fpcc_struct_return, OPT_freg_struct_return, 1802 OPT_maix_struct_return, OPT_msvr4_struct_return)) { 1803 // TODO: We might want to consider enabling these options on AIX in the 1804 // future. 1805 if (T.isOSAIX()) 1806 Diags.Report(diag::err_drv_unsupported_opt_for_target) 1807 << A->getSpelling() << T.str(); 1808 1809 const Option &O = A->getOption(); 1810 if (O.matches(OPT_fpcc_struct_return) || 1811 O.matches(OPT_maix_struct_return)) { 1812 Opts.setStructReturnConvention(CodeGenOptions::SRCK_OnStack); 1813 } else { 1814 assert(O.matches(OPT_freg_struct_return) || 1815 O.matches(OPT_msvr4_struct_return)); 1816 Opts.setStructReturnConvention(CodeGenOptions::SRCK_InRegs); 1817 } 1818 } 1819 1820 if (T.isOSAIX() && (Args.hasArg(OPT_mignore_xcoff_visibility) || 1821 !Args.hasArg(OPT_fvisibility))) 1822 Opts.IgnoreXCOFFVisibility = 1; 1823 1824 if (Arg *A = 1825 Args.getLastArg(OPT_mabi_EQ_vec_default, OPT_mabi_EQ_vec_extabi)) { 1826 if (!T.isOSAIX()) 1827 Diags.Report(diag::err_drv_unsupported_opt_for_target) 1828 << A->getSpelling() << T.str(); 1829 1830 const Option &O = A->getOption(); 1831 if (O.matches(OPT_mabi_EQ_vec_default)) 1832 Diags.Report(diag::err_aix_default_altivec_abi) 1833 << A->getSpelling() << T.str(); 1834 else { 1835 assert(O.matches(OPT_mabi_EQ_vec_extabi)); 1836 Opts.EnableAIXExtendedAltivecABI = 1; 1837 } 1838 } 1839 1840 bool NeedLocTracking = false; 1841 1842 if (!Opts.OptRecordFile.empty()) 1843 NeedLocTracking = true; 1844 1845 if (Arg *A = Args.getLastArg(OPT_opt_record_passes)) { 1846 Opts.OptRecordPasses = A->getValue(); 1847 NeedLocTracking = true; 1848 } 1849 1850 if (Arg *A = Args.getLastArg(OPT_opt_record_format)) { 1851 Opts.OptRecordFormat = A->getValue(); 1852 NeedLocTracking = true; 1853 } 1854 1855 if (Arg *A = Args.getLastArg(OPT_Rpass_EQ)) { 1856 Opts.OptimizationRemarkPattern = 1857 GenerateOptimizationRemarkRegex(Diags, Args, A); 1858 NeedLocTracking = true; 1859 } 1860 1861 if (Arg *A = Args.getLastArg(OPT_Rpass_missed_EQ)) { 1862 Opts.OptimizationRemarkMissedPattern = 1863 GenerateOptimizationRemarkRegex(Diags, Args, A); 1864 NeedLocTracking = true; 1865 } 1866 1867 if (Arg *A = Args.getLastArg(OPT_Rpass_analysis_EQ)) { 1868 Opts.OptimizationRemarkAnalysisPattern = 1869 GenerateOptimizationRemarkRegex(Diags, Args, A); 1870 NeedLocTracking = true; 1871 } 1872 1873 bool UsingSampleProfile = !Opts.SampleProfileFile.empty(); 1874 bool UsingProfile = UsingSampleProfile || 1875 (Opts.getProfileUse() != CodeGenOptions::ProfileNone); 1876 1877 if (Opts.DiagnosticsWithHotness && !UsingProfile && 1878 // An IR file will contain PGO as metadata 1879 IK.getLanguage() != Language::LLVM_IR) 1880 Diags.Report(diag::warn_drv_diagnostics_hotness_requires_pgo) 1881 << "-fdiagnostics-show-hotness"; 1882 1883 // Parse remarks hotness threshold. Valid value is either integer or 'auto'. 1884 if (auto *arg = 1885 Args.getLastArg(options::OPT_fdiagnostics_hotness_threshold_EQ)) { 1886 auto ResultOrErr = 1887 llvm::remarks::parseHotnessThresholdOption(arg->getValue()); 1888 1889 if (!ResultOrErr) { 1890 Diags.Report(diag::err_drv_invalid_diagnotics_hotness_threshold) 1891 << "-fdiagnostics-hotness-threshold="; 1892 } else { 1893 Opts.DiagnosticsHotnessThreshold = *ResultOrErr; 1894 if ((!Opts.DiagnosticsHotnessThreshold.hasValue() || 1895 Opts.DiagnosticsHotnessThreshold.getValue() > 0) && 1896 !UsingProfile) 1897 Diags.Report(diag::warn_drv_diagnostics_hotness_requires_pgo) 1898 << "-fdiagnostics-hotness-threshold="; 1899 } 1900 } 1901 1902 // If the user requested to use a sample profile for PGO, then the 1903 // backend will need to track source location information so the profile 1904 // can be incorporated into the IR. 1905 if (UsingSampleProfile) 1906 NeedLocTracking = true; 1907 1908 // If the user requested a flag that requires source locations available in 1909 // the backend, make sure that the backend tracks source location information. 1910 if (NeedLocTracking && Opts.getDebugInfo() == codegenoptions::NoDebugInfo) 1911 Opts.setDebugInfo(codegenoptions::LocTrackingOnly); 1912 1913 // Parse -fsanitize-recover= arguments. 1914 // FIXME: Report unrecoverable sanitizers incorrectly specified here. 1915 parseSanitizerKinds("-fsanitize-recover=", 1916 Args.getAllArgValues(OPT_fsanitize_recover_EQ), Diags, 1917 Opts.SanitizeRecover); 1918 parseSanitizerKinds("-fsanitize-trap=", 1919 Args.getAllArgValues(OPT_fsanitize_trap_EQ), Diags, 1920 Opts.SanitizeTrap); 1921 1922 Opts.EmitVersionIdentMetadata = Args.hasFlag(OPT_Qy, OPT_Qn, true); 1923 1924 return Success && Diags.getNumErrors() == NumErrorsBefore; 1925 } 1926 1927 bool CompilerInvocation::ParseCodeGenArgs( 1928 CompilerInvocation &Res, CodeGenOptions &Opts, ArgList &Args, InputKind IK, 1929 DiagnosticsEngine &Diags, const llvm::Triple &T, 1930 const std::string &OutputFile, const LangOptions &LangOptsRef) { 1931 CodeGenOptions DummyOpts; 1932 1933 return RoundTrip( 1934 [&](CompilerInvocation &Res, ArgList &Args, DiagnosticsEngine &Diags) { 1935 Args.getLastArg(OPT_O0, OPT_O4, OPT_O, OPT_Ofast); 1936 return ParseCodeGenArgsImpl(Res.getCodeGenOpts(), Args, IK, Diags, T, 1937 OutputFile, LangOptsRef); 1938 }, 1939 [&](CompilerInvocation &Res, SmallVectorImpl<const char *> &GeneratedArgs, 1940 StringAllocator SA) { 1941 GenerateCodeGenArgs(Res.getCodeGenOpts(), GeneratedArgs, SA, T, 1942 OutputFile, &LangOptsRef); 1943 }, 1944 [&DummyOpts](CompilerInvocation &Res) { 1945 std::swap(Res.CodeGenOpts, DummyOpts); 1946 }, 1947 Res, Args, Diags, "CodeGenOptions"); 1948 } 1949 1950 static void 1951 GenerateDependencyOutputArgs(const DependencyOutputOptions &Opts, 1952 SmallVectorImpl<const char *> &Args, 1953 CompilerInvocation::StringAllocator SA) { 1954 const DependencyOutputOptions &DependencyOutputOpts = Opts; 1955 #define DEPENDENCY_OUTPUT_OPTION_WITH_MARSHALLING( \ 1956 PREFIX_TYPE, NAME, ID, KIND, GROUP, ALIAS, ALIASARGS, FLAGS, PARAM, \ 1957 HELPTEXT, METAVAR, VALUES, SPELLING, SHOULD_PARSE, ALWAYS_EMIT, KEYPATH, \ 1958 DEFAULT_VALUE, IMPLIED_CHECK, IMPLIED_VALUE, NORMALIZER, DENORMALIZER, \ 1959 MERGER, EXTRACTOR, TABLE_INDEX) \ 1960 GENERATE_OPTION_WITH_MARSHALLING( \ 1961 Args, SA, KIND, FLAGS, SPELLING, ALWAYS_EMIT, KEYPATH, DEFAULT_VALUE, \ 1962 IMPLIED_CHECK, IMPLIED_VALUE, DENORMALIZER, EXTRACTOR, TABLE_INDEX) 1963 #include "clang/Driver/Options.inc" 1964 #undef DEPENDENCY_OUTPUT_OPTION_WITH_MARSHALLING 1965 1966 if (Opts.ShowIncludesDest != ShowIncludesDestination::None) 1967 GenerateArg(Args, OPT_show_includes, SA); 1968 1969 for (const auto &Dep : Opts.ExtraDeps) { 1970 switch (Dep.second) { 1971 case EDK_SanitizeBlacklist: 1972 // Sanitizer blacklist arguments are generated from LanguageOptions. 1973 continue; 1974 case EDK_ModuleFile: 1975 // Module file arguments are generated from FrontendOptions and 1976 // HeaderSearchOptions. 1977 continue; 1978 case EDK_ProfileList: 1979 GenerateArg(Args, OPT_fprofile_list_EQ, Dep.first, SA); 1980 break; 1981 case EDK_DepFileEntry: 1982 GenerateArg(Args, OPT_fdepfile_entry, Dep.first, SA); 1983 break; 1984 } 1985 } 1986 } 1987 1988 static bool ParseDependencyOutputArgsImpl( 1989 DependencyOutputOptions &Opts, ArgList &Args, 1990 DiagnosticsEngine &Diags, 1991 frontend::ActionKind Action, bool ShowLineMarkers) { 1992 unsigned NumErrorsBefore = Diags.getNumErrors(); 1993 bool Success = true; 1994 1995 DependencyOutputOptions &DependencyOutputOpts = Opts; 1996 #define DEPENDENCY_OUTPUT_OPTION_WITH_MARSHALLING( \ 1997 PREFIX_TYPE, NAME, ID, KIND, GROUP, ALIAS, ALIASARGS, FLAGS, PARAM, \ 1998 HELPTEXT, METAVAR, VALUES, SPELLING, SHOULD_PARSE, ALWAYS_EMIT, KEYPATH, \ 1999 DEFAULT_VALUE, IMPLIED_CHECK, IMPLIED_VALUE, NORMALIZER, DENORMALIZER, \ 2000 MERGER, EXTRACTOR, TABLE_INDEX) \ 2001 PARSE_OPTION_WITH_MARSHALLING(Args, Diags, Success, ID, FLAGS, PARAM, \ 2002 SHOULD_PARSE, KEYPATH, DEFAULT_VALUE, \ 2003 IMPLIED_CHECK, IMPLIED_VALUE, NORMALIZER, \ 2004 MERGER, TABLE_INDEX) 2005 #include "clang/Driver/Options.inc" 2006 #undef DEPENDENCY_OUTPUT_OPTION_WITH_MARSHALLING 2007 2008 if (Args.hasArg(OPT_show_includes)) { 2009 // Writing both /showIncludes and preprocessor output to stdout 2010 // would produce interleaved output, so use stderr for /showIncludes. 2011 // This behaves the same as cl.exe, when /E, /EP or /P are passed. 2012 if (Action == frontend::PrintPreprocessedInput || !ShowLineMarkers) 2013 Opts.ShowIncludesDest = ShowIncludesDestination::Stderr; 2014 else 2015 Opts.ShowIncludesDest = ShowIncludesDestination::Stdout; 2016 } else { 2017 Opts.ShowIncludesDest = ShowIncludesDestination::None; 2018 } 2019 2020 // Add sanitizer blacklists as extra dependencies. 2021 // They won't be discovered by the regular preprocessor, so 2022 // we let make / ninja to know about this implicit dependency. 2023 if (!Args.hasArg(OPT_fno_sanitize_blacklist)) { 2024 for (const auto *A : Args.filtered(OPT_fsanitize_blacklist)) { 2025 StringRef Val = A->getValue(); 2026 if (Val.find('=') == StringRef::npos) 2027 Opts.ExtraDeps.emplace_back(std::string(Val), EDK_SanitizeBlacklist); 2028 } 2029 if (Opts.IncludeSystemHeaders) { 2030 for (const auto *A : Args.filtered(OPT_fsanitize_system_blacklist)) { 2031 StringRef Val = A->getValue(); 2032 if (Val.find('=') == StringRef::npos) 2033 Opts.ExtraDeps.emplace_back(std::string(Val), EDK_SanitizeBlacklist); 2034 } 2035 } 2036 } 2037 2038 // -fprofile-list= dependencies. 2039 for (const auto &Filename : Args.getAllArgValues(OPT_fprofile_list_EQ)) 2040 Opts.ExtraDeps.emplace_back(Filename, EDK_ProfileList); 2041 2042 // Propagate the extra dependencies. 2043 for (const auto *A : Args.filtered(OPT_fdepfile_entry)) 2044 Opts.ExtraDeps.emplace_back(A->getValue(), EDK_DepFileEntry); 2045 2046 // Only the -fmodule-file=<file> form. 2047 for (const auto *A : Args.filtered(OPT_fmodule_file)) { 2048 StringRef Val = A->getValue(); 2049 if (Val.find('=') == StringRef::npos) 2050 Opts.ExtraDeps.emplace_back(std::string(Val), EDK_ModuleFile); 2051 } 2052 2053 return Success && Diags.getNumErrors() == NumErrorsBefore; 2054 } 2055 2056 static bool ParseDependencyOutputArgs(CompilerInvocation &Res, 2057 DependencyOutputOptions &Opts, 2058 ArgList &Args, DiagnosticsEngine &Diags, 2059 frontend::ActionKind Action, 2060 bool ShowLineMarkers) { 2061 DependencyOutputOptions DummyOpts; 2062 2063 return RoundTrip( 2064 [Action, ShowLineMarkers](CompilerInvocation &Res, ArgList &Args, 2065 DiagnosticsEngine &Diags) { 2066 return ParseDependencyOutputArgsImpl(Res.getDependencyOutputOpts(), 2067 Args, Diags, Action, 2068 ShowLineMarkers); 2069 }, 2070 [&Args](CompilerInvocation &Res, 2071 SmallVectorImpl<const char *> &GeneratedArgs, 2072 CompilerInvocation::StringAllocator SA) { 2073 GenerateDependencyOutputArgs(Res.getDependencyOutputOpts(), 2074 GeneratedArgs, SA); 2075 // We're querying sanitizer blacklist and module file arguments, but 2076 // they are generated from LanguageOptions and HeaderSearchOptions. 2077 // Let's satisfy RoundTrip by generating them ourselves for now. 2078 if (!Args.hasArg(OPT_fno_sanitize_blacklist)) { 2079 for (const auto *A : Args.filtered(OPT_fsanitize_blacklist)) { 2080 StringRef Val = A->getValue(); 2081 if (Val.find('=') == StringRef::npos) 2082 GenerateArg(GeneratedArgs, OPT_fsanitize_blacklist, Val, SA); 2083 } 2084 if (Res.getDependencyOutputOpts().IncludeSystemHeaders) { 2085 for (const auto *A : 2086 Args.filtered(OPT_fsanitize_system_blacklist)) { 2087 StringRef Val = A->getValue(); 2088 if (Val.find('=') == StringRef::npos) 2089 GenerateArg(GeneratedArgs, OPT_fsanitize_system_blacklist, Val, 2090 SA); 2091 } 2092 } 2093 } 2094 2095 for (const auto *A : Args.filtered(OPT_fmodule_file)) { 2096 StringRef Val = A->getValue(); 2097 if (Val.find('=') == StringRef::npos) 2098 GenerateArg(GeneratedArgs, OPT_fmodule_file, Val, SA); 2099 } 2100 }, 2101 [&DummyOpts](CompilerInvocation &Res) { 2102 std::swap(Res.getDependencyOutputOpts(), DummyOpts); 2103 }, 2104 Res, Args, Diags, "DependencyOutputOptions"); 2105 } 2106 2107 static bool parseShowColorsArgs(const ArgList &Args, bool DefaultColor) { 2108 // Color diagnostics default to auto ("on" if terminal supports) in the driver 2109 // but default to off in cc1, needing an explicit OPT_fdiagnostics_color. 2110 // Support both clang's -f[no-]color-diagnostics and gcc's 2111 // -f[no-]diagnostics-colors[=never|always|auto]. 2112 enum { 2113 Colors_On, 2114 Colors_Off, 2115 Colors_Auto 2116 } ShowColors = DefaultColor ? Colors_Auto : Colors_Off; 2117 for (auto *A : Args) { 2118 const Option &O = A->getOption(); 2119 if (O.matches(options::OPT_fcolor_diagnostics) || 2120 O.matches(options::OPT_fdiagnostics_color)) { 2121 ShowColors = Colors_On; 2122 } else if (O.matches(options::OPT_fno_color_diagnostics) || 2123 O.matches(options::OPT_fno_diagnostics_color)) { 2124 ShowColors = Colors_Off; 2125 } else if (O.matches(options::OPT_fdiagnostics_color_EQ)) { 2126 StringRef Value(A->getValue()); 2127 if (Value == "always") 2128 ShowColors = Colors_On; 2129 else if (Value == "never") 2130 ShowColors = Colors_Off; 2131 else if (Value == "auto") 2132 ShowColors = Colors_Auto; 2133 } 2134 } 2135 return ShowColors == Colors_On || 2136 (ShowColors == Colors_Auto && 2137 llvm::sys::Process::StandardErrHasColors()); 2138 } 2139 2140 static bool checkVerifyPrefixes(const std::vector<std::string> &VerifyPrefixes, 2141 DiagnosticsEngine &Diags) { 2142 bool Success = true; 2143 for (const auto &Prefix : VerifyPrefixes) { 2144 // Every prefix must start with a letter and contain only alphanumeric 2145 // characters, hyphens, and underscores. 2146 auto BadChar = llvm::find_if(Prefix, [](char C) { 2147 return !isAlphanumeric(C) && C != '-' && C != '_'; 2148 }); 2149 if (BadChar != Prefix.end() || !isLetter(Prefix[0])) { 2150 Success = false; 2151 Diags.Report(diag::err_drv_invalid_value) << "-verify=" << Prefix; 2152 Diags.Report(diag::note_drv_verify_prefix_spelling); 2153 } 2154 } 2155 return Success; 2156 } 2157 2158 static void GenerateFileSystemArgs(const FileSystemOptions &FileSystemOpts, 2159 SmallVectorImpl<const char *> &Args, 2160 CompilerInvocation::StringAllocator SA) { 2161 #define FILE_SYSTEM_OPTION_WITH_MARSHALLING( \ 2162 PREFIX_TYPE, NAME, ID, KIND, GROUP, ALIAS, ALIASARGS, FLAGS, PARAM, \ 2163 HELPTEXT, METAVAR, VALUES, SPELLING, SHOULD_PARSE, ALWAYS_EMIT, KEYPATH, \ 2164 DEFAULT_VALUE, IMPLIED_CHECK, IMPLIED_VALUE, NORMALIZER, DENORMALIZER, \ 2165 MERGER, EXTRACTOR, TABLE_INDEX) \ 2166 GENERATE_OPTION_WITH_MARSHALLING( \ 2167 Args, SA, KIND, FLAGS, SPELLING, ALWAYS_EMIT, KEYPATH, DEFAULT_VALUE, \ 2168 IMPLIED_CHECK, IMPLIED_VALUE, DENORMALIZER, EXTRACTOR, TABLE_INDEX) 2169 #include "clang/Driver/Options.inc" 2170 #undef FILE_SYSTEM_OPTION_WITH_MARSHALLING 2171 } 2172 2173 static bool ParseFileSystemArgs(FileSystemOptions &FileSystemOpts, 2174 const ArgList &Args, DiagnosticsEngine &Diags) { 2175 bool Success = true; 2176 2177 #define FILE_SYSTEM_OPTION_WITH_MARSHALLING( \ 2178 PREFIX_TYPE, NAME, ID, KIND, GROUP, ALIAS, ALIASARGS, FLAGS, PARAM, \ 2179 HELPTEXT, METAVAR, VALUES, SPELLING, SHOULD_PARSE, ALWAYS_EMIT, KEYPATH, \ 2180 DEFAULT_VALUE, IMPLIED_CHECK, IMPLIED_VALUE, NORMALIZER, DENORMALIZER, \ 2181 MERGER, EXTRACTOR, TABLE_INDEX) \ 2182 PARSE_OPTION_WITH_MARSHALLING(Args, Diags, Success, ID, FLAGS, PARAM, \ 2183 SHOULD_PARSE, KEYPATH, DEFAULT_VALUE, \ 2184 IMPLIED_CHECK, IMPLIED_VALUE, NORMALIZER, \ 2185 MERGER, TABLE_INDEX) 2186 #include "clang/Driver/Options.inc" 2187 #undef FILE_SYSTEM_OPTION_WITH_MARSHALLING 2188 2189 return Success; 2190 } 2191 2192 static void GenerateMigratorArgs(const MigratorOptions &MigratorOpts, 2193 SmallVectorImpl<const char *> &Args, 2194 CompilerInvocation::StringAllocator SA) { 2195 #define MIGRATOR_OPTION_WITH_MARSHALLING( \ 2196 PREFIX_TYPE, NAME, ID, KIND, GROUP, ALIAS, ALIASARGS, FLAGS, PARAM, \ 2197 HELPTEXT, METAVAR, VALUES, SPELLING, SHOULD_PARSE, ALWAYS_EMIT, KEYPATH, \ 2198 DEFAULT_VALUE, IMPLIED_CHECK, IMPLIED_VALUE, NORMALIZER, DENORMALIZER, \ 2199 MERGER, EXTRACTOR, TABLE_INDEX) \ 2200 GENERATE_OPTION_WITH_MARSHALLING( \ 2201 Args, SA, KIND, FLAGS, SPELLING, ALWAYS_EMIT, KEYPATH, DEFAULT_VALUE, \ 2202 IMPLIED_CHECK, IMPLIED_VALUE, DENORMALIZER, EXTRACTOR, TABLE_INDEX) 2203 #include "clang/Driver/Options.inc" 2204 #undef MIGRATOR_OPTION_WITH_MARSHALLING 2205 } 2206 2207 static bool ParseMigratorArgs(MigratorOptions &MigratorOpts, 2208 const ArgList &Args, DiagnosticsEngine &Diags) { 2209 bool Success = true; 2210 2211 #define MIGRATOR_OPTION_WITH_MARSHALLING( \ 2212 PREFIX_TYPE, NAME, ID, KIND, GROUP, ALIAS, ALIASARGS, FLAGS, PARAM, \ 2213 HELPTEXT, METAVAR, VALUES, SPELLING, SHOULD_PARSE, ALWAYS_EMIT, KEYPATH, \ 2214 DEFAULT_VALUE, IMPLIED_CHECK, IMPLIED_VALUE, NORMALIZER, DENORMALIZER, \ 2215 MERGER, EXTRACTOR, TABLE_INDEX) \ 2216 PARSE_OPTION_WITH_MARSHALLING(Args, Diags, Success, ID, FLAGS, PARAM, \ 2217 SHOULD_PARSE, KEYPATH, DEFAULT_VALUE, \ 2218 IMPLIED_CHECK, IMPLIED_VALUE, NORMALIZER, \ 2219 MERGER, TABLE_INDEX) 2220 #include "clang/Driver/Options.inc" 2221 #undef MIGRATOR_OPTION_WITH_MARSHALLING 2222 2223 return Success; 2224 } 2225 2226 void CompilerInvocation::GenerateDiagnosticArgs( 2227 const DiagnosticOptions &Opts, SmallVectorImpl<const char *> &Args, 2228 StringAllocator SA, bool DefaultDiagColor) { 2229 const DiagnosticOptions *DiagnosticOpts = &Opts; 2230 #define DIAG_OPTION_WITH_MARSHALLING( \ 2231 PREFIX_TYPE, NAME, ID, KIND, GROUP, ALIAS, ALIASARGS, FLAGS, PARAM, \ 2232 HELPTEXT, METAVAR, VALUES, SPELLING, SHOULD_PARSE, ALWAYS_EMIT, KEYPATH, \ 2233 DEFAULT_VALUE, IMPLIED_CHECK, IMPLIED_VALUE, NORMALIZER, DENORMALIZER, \ 2234 MERGER, EXTRACTOR, TABLE_INDEX) \ 2235 GENERATE_OPTION_WITH_MARSHALLING( \ 2236 Args, SA, KIND, FLAGS, SPELLING, ALWAYS_EMIT, KEYPATH, DEFAULT_VALUE, \ 2237 IMPLIED_CHECK, IMPLIED_VALUE, DENORMALIZER, EXTRACTOR, TABLE_INDEX) 2238 #include "clang/Driver/Options.inc" 2239 #undef DIAG_OPTION_WITH_MARSHALLING 2240 2241 if (!Opts.DiagnosticSerializationFile.empty()) 2242 GenerateArg(Args, OPT_diagnostic_serialized_file, 2243 Opts.DiagnosticSerializationFile, SA); 2244 2245 if (Opts.ShowColors) 2246 GenerateArg(Args, OPT_fcolor_diagnostics, SA); 2247 2248 if (Opts.VerifyDiagnostics && 2249 llvm::is_contained(Opts.VerifyPrefixes, "expected")) 2250 GenerateArg(Args, OPT_verify, SA); 2251 2252 for (const auto &Prefix : Opts.VerifyPrefixes) 2253 if (Prefix != "expected") 2254 GenerateArg(Args, OPT_verify_EQ, Prefix, SA); 2255 2256 DiagnosticLevelMask VIU = Opts.getVerifyIgnoreUnexpected(); 2257 if (VIU == DiagnosticLevelMask::None) { 2258 // This is the default, don't generate anything. 2259 } else if (VIU == DiagnosticLevelMask::All) { 2260 GenerateArg(Args, OPT_verify_ignore_unexpected, SA); 2261 } else { 2262 if (static_cast<unsigned>(VIU & DiagnosticLevelMask::Note) != 0) 2263 GenerateArg(Args, OPT_verify_ignore_unexpected_EQ, "note", SA); 2264 if (static_cast<unsigned>(VIU & DiagnosticLevelMask::Remark) != 0) 2265 GenerateArg(Args, OPT_verify_ignore_unexpected_EQ, "remark", SA); 2266 if (static_cast<unsigned>(VIU & DiagnosticLevelMask::Warning) != 0) 2267 GenerateArg(Args, OPT_verify_ignore_unexpected_EQ, "warning", SA); 2268 if (static_cast<unsigned>(VIU & DiagnosticLevelMask::Error) != 0) 2269 GenerateArg(Args, OPT_verify_ignore_unexpected_EQ, "error", SA); 2270 } 2271 2272 for (const auto &Warning : Opts.Warnings) { 2273 // This option is automatically generated from UndefPrefixes. 2274 if (Warning == "undef-prefix") 2275 continue; 2276 Args.push_back(SA(StringRef("-W") + Warning)); 2277 } 2278 2279 for (const auto &Remark : Opts.Remarks) 2280 Args.push_back(SA(StringRef("-R") + Remark)); 2281 } 2282 2283 bool clang::ParseDiagnosticArgs(DiagnosticOptions &Opts, ArgList &Args, 2284 DiagnosticsEngine *Diags, 2285 bool DefaultDiagColor) { 2286 Optional<DiagnosticsEngine> IgnoringDiags; 2287 if (!Diags) { 2288 IgnoringDiags.emplace(new DiagnosticIDs(), new DiagnosticOptions(), 2289 new IgnoringDiagConsumer()); 2290 Diags = &*IgnoringDiags; 2291 } 2292 2293 // The key paths of diagnostic options defined in Options.td start with 2294 // "DiagnosticOpts->". Let's provide the expected variable name and type. 2295 DiagnosticOptions *DiagnosticOpts = &Opts; 2296 bool Success = true; 2297 2298 #define DIAG_OPTION_WITH_MARSHALLING( \ 2299 PREFIX_TYPE, NAME, ID, KIND, GROUP, ALIAS, ALIASARGS, FLAGS, PARAM, \ 2300 HELPTEXT, METAVAR, VALUES, SPELLING, SHOULD_PARSE, ALWAYS_EMIT, KEYPATH, \ 2301 DEFAULT_VALUE, IMPLIED_CHECK, IMPLIED_VALUE, NORMALIZER, DENORMALIZER, \ 2302 MERGER, EXTRACTOR, TABLE_INDEX) \ 2303 PARSE_OPTION_WITH_MARSHALLING(Args, *Diags, Success, ID, FLAGS, PARAM, \ 2304 SHOULD_PARSE, KEYPATH, DEFAULT_VALUE, \ 2305 IMPLIED_CHECK, IMPLIED_VALUE, NORMALIZER, \ 2306 MERGER, TABLE_INDEX) 2307 #include "clang/Driver/Options.inc" 2308 #undef DIAG_OPTION_WITH_MARSHALLING 2309 2310 llvm::sys::Process::UseANSIEscapeCodes(Opts.UseANSIEscapeCodes); 2311 2312 if (Arg *A = 2313 Args.getLastArg(OPT_diagnostic_serialized_file, OPT__serialize_diags)) 2314 Opts.DiagnosticSerializationFile = A->getValue(); 2315 Opts.ShowColors = parseShowColorsArgs(Args, DefaultDiagColor); 2316 2317 Opts.VerifyDiagnostics = Args.hasArg(OPT_verify) || Args.hasArg(OPT_verify_EQ); 2318 Opts.VerifyPrefixes = Args.getAllArgValues(OPT_verify_EQ); 2319 if (Args.hasArg(OPT_verify)) 2320 Opts.VerifyPrefixes.push_back("expected"); 2321 // Keep VerifyPrefixes in its original order for the sake of diagnostics, and 2322 // then sort it to prepare for fast lookup using std::binary_search. 2323 if (!checkVerifyPrefixes(Opts.VerifyPrefixes, *Diags)) { 2324 Opts.VerifyDiagnostics = false; 2325 Success = false; 2326 } 2327 else 2328 llvm::sort(Opts.VerifyPrefixes); 2329 DiagnosticLevelMask DiagMask = DiagnosticLevelMask::None; 2330 Success &= parseDiagnosticLevelMask("-verify-ignore-unexpected=", 2331 Args.getAllArgValues(OPT_verify_ignore_unexpected_EQ), 2332 *Diags, DiagMask); 2333 if (Args.hasArg(OPT_verify_ignore_unexpected)) 2334 DiagMask = DiagnosticLevelMask::All; 2335 Opts.setVerifyIgnoreUnexpected(DiagMask); 2336 if (Opts.TabStop == 0 || Opts.TabStop > DiagnosticOptions::MaxTabStop) { 2337 Opts.TabStop = DiagnosticOptions::DefaultTabStop; 2338 Diags->Report(diag::warn_ignoring_ftabstop_value) 2339 << Opts.TabStop << DiagnosticOptions::DefaultTabStop; 2340 } 2341 2342 addDiagnosticArgs(Args, OPT_W_Group, OPT_W_value_Group, Opts.Warnings); 2343 addDiagnosticArgs(Args, OPT_R_Group, OPT_R_value_Group, Opts.Remarks); 2344 2345 return Success; 2346 } 2347 2348 bool CompilerInvocation::ParseDiagnosticArgsRoundTrip(CompilerInvocation &Res, 2349 DiagnosticOptions &Opts, 2350 ArgList &Args, 2351 DiagnosticsEngine *Diags, 2352 bool DefaultDiagColor) { 2353 IntrusiveRefCntPtr<DiagnosticOptions> DummyOpts(new DiagnosticOptions); 2354 2355 return RoundTrip( 2356 [DefaultDiagColor](CompilerInvocation &Res, ArgList &Args, 2357 DiagnosticsEngine &Diags) { 2358 // Query the options might not get queried properly during parsing, but 2359 // should be generated from DiagnosticOptions. 2360 2361 Args.getLastArg(OPT_fcolor_diagnostics); 2362 Args.getLastArg(OPT_fno_color_diagnostics); 2363 Args.getLastArg(OPT_fdiagnostics_color); 2364 Args.getLastArg(OPT_fno_diagnostics_color); 2365 Args.getLastArg(OPT_fdiagnostics_color_EQ); 2366 2367 for (auto *A : Args.filtered(OPT_W_Group)) 2368 Args.getLastArg(A->getOption().getID()); 2369 for (auto *A : Args.filtered(OPT_R_Group)) 2370 Args.getLastArg(A->getOption().getID()); 2371 2372 return clang::ParseDiagnosticArgs(Res.getDiagnosticOpts(), Args, &Diags, 2373 DefaultDiagColor); 2374 }, 2375 [DefaultDiagColor](CompilerInvocation &Res, 2376 SmallVectorImpl<const char *> &Args, 2377 CompilerInvocation::StringAllocator SA) { 2378 GenerateDiagnosticArgs(Res.getDiagnosticOpts(), Args, SA, 2379 DefaultDiagColor); 2380 }, 2381 [&DummyOpts](CompilerInvocation &Res) { 2382 Res.DiagnosticOpts.swap(DummyOpts); 2383 }, 2384 Res, Args, *Diags, "DiagnosticOptions"); 2385 } 2386 2387 /// Parse the argument to the -ftest-module-file-extension 2388 /// command-line argument. 2389 /// 2390 /// \returns true on error, false on success. 2391 static bool parseTestModuleFileExtensionArg(StringRef Arg, 2392 std::string &BlockName, 2393 unsigned &MajorVersion, 2394 unsigned &MinorVersion, 2395 bool &Hashed, 2396 std::string &UserInfo) { 2397 SmallVector<StringRef, 5> Args; 2398 Arg.split(Args, ':', 5); 2399 if (Args.size() < 5) 2400 return true; 2401 2402 BlockName = std::string(Args[0]); 2403 if (Args[1].getAsInteger(10, MajorVersion)) return true; 2404 if (Args[2].getAsInteger(10, MinorVersion)) return true; 2405 if (Args[3].getAsInteger(2, Hashed)) return true; 2406 if (Args.size() > 4) 2407 UserInfo = std::string(Args[4]); 2408 return false; 2409 } 2410 2411 /// Return a table that associates command line option specifiers with the 2412 /// frontend action. Note: The pair {frontend::PluginAction, OPT_plugin} is 2413 /// intentionally missing, as this case is handled separately from other 2414 /// frontend options. 2415 static const auto &getFrontendActionTable() { 2416 static const std::pair<frontend::ActionKind, unsigned> Table[] = { 2417 {frontend::ASTDeclList, OPT_ast_list}, 2418 2419 {frontend::ASTDump, OPT_ast_dump_all_EQ}, 2420 {frontend::ASTDump, OPT_ast_dump_all}, 2421 {frontend::ASTDump, OPT_ast_dump_EQ}, 2422 {frontend::ASTDump, OPT_ast_dump}, 2423 {frontend::ASTDump, OPT_ast_dump_lookups}, 2424 {frontend::ASTDump, OPT_ast_dump_decl_types}, 2425 2426 {frontend::ASTPrint, OPT_ast_print}, 2427 {frontend::ASTView, OPT_ast_view}, 2428 {frontend::DumpCompilerOptions, OPT_compiler_options_dump}, 2429 {frontend::DumpRawTokens, OPT_dump_raw_tokens}, 2430 {frontend::DumpTokens, OPT_dump_tokens}, 2431 {frontend::EmitAssembly, OPT_S}, 2432 {frontend::EmitBC, OPT_emit_llvm_bc}, 2433 {frontend::EmitHTML, OPT_emit_html}, 2434 {frontend::EmitLLVM, OPT_emit_llvm}, 2435 {frontend::EmitLLVMOnly, OPT_emit_llvm_only}, 2436 {frontend::EmitCodeGenOnly, OPT_emit_codegen_only}, 2437 {frontend::EmitCodeGenOnly, OPT_emit_codegen_only}, 2438 {frontend::EmitObj, OPT_emit_obj}, 2439 2440 {frontend::FixIt, OPT_fixit_EQ}, 2441 {frontend::FixIt, OPT_fixit}, 2442 2443 {frontend::GenerateModule, OPT_emit_module}, 2444 {frontend::GenerateModuleInterface, OPT_emit_module_interface}, 2445 {frontend::GenerateHeaderModule, OPT_emit_header_module}, 2446 {frontend::GeneratePCH, OPT_emit_pch}, 2447 {frontend::GenerateInterfaceStubs, OPT_emit_interface_stubs}, 2448 {frontend::InitOnly, OPT_init_only}, 2449 {frontend::ParseSyntaxOnly, OPT_fsyntax_only}, 2450 {frontend::ModuleFileInfo, OPT_module_file_info}, 2451 {frontend::VerifyPCH, OPT_verify_pch}, 2452 {frontend::PrintPreamble, OPT_print_preamble}, 2453 {frontend::PrintPreprocessedInput, OPT_E}, 2454 {frontend::TemplightDump, OPT_templight_dump}, 2455 {frontend::RewriteMacros, OPT_rewrite_macros}, 2456 {frontend::RewriteObjC, OPT_rewrite_objc}, 2457 {frontend::RewriteTest, OPT_rewrite_test}, 2458 {frontend::RunAnalysis, OPT_analyze}, 2459 {frontend::MigrateSource, OPT_migrate}, 2460 {frontend::RunPreprocessorOnly, OPT_Eonly}, 2461 {frontend::PrintDependencyDirectivesSourceMinimizerOutput, 2462 OPT_print_dependency_directives_minimized_source}, 2463 }; 2464 2465 return Table; 2466 } 2467 2468 /// Maps command line option to frontend action. 2469 static Optional<frontend::ActionKind> getFrontendAction(OptSpecifier &Opt) { 2470 for (const auto &ActionOpt : getFrontendActionTable()) 2471 if (ActionOpt.second == Opt.getID()) 2472 return ActionOpt.first; 2473 2474 return None; 2475 } 2476 2477 /// Maps frontend action to command line option. 2478 static Optional<OptSpecifier> 2479 getProgramActionOpt(frontend::ActionKind ProgramAction) { 2480 for (const auto &ActionOpt : getFrontendActionTable()) 2481 if (ActionOpt.first == ProgramAction) 2482 return OptSpecifier(ActionOpt.second); 2483 2484 return None; 2485 } 2486 2487 static void GenerateFrontendArgs(const FrontendOptions &Opts, 2488 SmallVectorImpl<const char *> &Args, 2489 CompilerInvocation::StringAllocator SA, 2490 bool IsHeader) { 2491 const FrontendOptions &FrontendOpts = Opts; 2492 #define FRONTEND_OPTION_WITH_MARSHALLING( \ 2493 PREFIX_TYPE, NAME, ID, KIND, GROUP, ALIAS, ALIASARGS, FLAGS, PARAM, \ 2494 HELPTEXT, METAVAR, VALUES, SPELLING, SHOULD_PARSE, ALWAYS_EMIT, KEYPATH, \ 2495 DEFAULT_VALUE, IMPLIED_CHECK, IMPLIED_VALUE, NORMALIZER, DENORMALIZER, \ 2496 MERGER, EXTRACTOR, TABLE_INDEX) \ 2497 GENERATE_OPTION_WITH_MARSHALLING( \ 2498 Args, SA, KIND, FLAGS, SPELLING, ALWAYS_EMIT, KEYPATH, DEFAULT_VALUE, \ 2499 IMPLIED_CHECK, IMPLIED_VALUE, DENORMALIZER, EXTRACTOR, TABLE_INDEX) 2500 #include "clang/Driver/Options.inc" 2501 #undef FRONTEND_OPTION_WITH_MARSHALLING 2502 2503 Optional<OptSpecifier> ProgramActionOpt = 2504 getProgramActionOpt(Opts.ProgramAction); 2505 2506 // Generating a simple flag covers most frontend actions. 2507 std::function<void()> GenerateProgramAction = [&]() { 2508 GenerateArg(Args, *ProgramActionOpt, SA); 2509 }; 2510 2511 if (!ProgramActionOpt) { 2512 // PluginAction is the only program action handled separately. 2513 assert(Opts.ProgramAction == frontend::PluginAction && 2514 "Frontend action without option."); 2515 GenerateProgramAction = [&]() { 2516 GenerateArg(Args, OPT_plugin, Opts.ActionName, SA); 2517 }; 2518 } 2519 2520 // FIXME: Simplify the complex 'AST dump' command line. 2521 if (Opts.ProgramAction == frontend::ASTDump) { 2522 GenerateProgramAction = [&]() { 2523 // ASTDumpLookups, ASTDumpDeclTypes and ASTDumpFilter are generated via 2524 // marshalling infrastructure. 2525 2526 if (Opts.ASTDumpFormat != ADOF_Default) { 2527 StringRef Format; 2528 switch (Opts.ASTDumpFormat) { 2529 case ADOF_Default: 2530 llvm_unreachable("Default AST dump format."); 2531 case ADOF_JSON: 2532 Format = "json"; 2533 break; 2534 } 2535 2536 if (Opts.ASTDumpAll) 2537 GenerateArg(Args, OPT_ast_dump_all_EQ, Format, SA); 2538 if (Opts.ASTDumpDecls) 2539 GenerateArg(Args, OPT_ast_dump_EQ, Format, SA); 2540 } else { 2541 if (Opts.ASTDumpAll) 2542 GenerateArg(Args, OPT_ast_dump_all, SA); 2543 if (Opts.ASTDumpDecls) 2544 GenerateArg(Args, OPT_ast_dump, SA); 2545 } 2546 }; 2547 } 2548 2549 if (Opts.ProgramAction == frontend::FixIt && !Opts.FixItSuffix.empty()) { 2550 GenerateProgramAction = [&]() { 2551 GenerateArg(Args, OPT_fixit_EQ, Opts.FixItSuffix, SA); 2552 }; 2553 } 2554 2555 GenerateProgramAction(); 2556 2557 for (const auto &PluginArgs : Opts.PluginArgs) 2558 for (const auto &PluginArg : PluginArgs.second) 2559 GenerateArg(Args, OPT_plugin_arg, PluginArgs.first + PluginArg, SA); 2560 2561 for (const auto &Ext : Opts.ModuleFileExtensions) { 2562 if (auto *TestExt = dyn_cast_or_null<TestModuleFileExtension>(Ext.get())) { 2563 std::string Buffer; 2564 llvm::raw_string_ostream OS(Buffer); 2565 OS << *TestExt; 2566 GenerateArg(Args, OPT_ftest_module_file_extension_EQ, OS.str(), SA); 2567 } 2568 } 2569 2570 if (!Opts.CodeCompletionAt.FileName.empty()) 2571 GenerateArg(Args, OPT_code_completion_at, Opts.CodeCompletionAt.ToString(), 2572 SA); 2573 2574 for (const auto &Plugin : Opts.Plugins) 2575 GenerateArg(Args, OPT_load, Plugin, SA); 2576 2577 // ASTDumpDecls and ASTDumpAll already handled with ProgramAction. 2578 2579 for (const auto &ModuleFile : Opts.ModuleFiles) 2580 GenerateArg(Args, OPT_fmodule_file, ModuleFile, SA); 2581 2582 if (Opts.AuxTargetCPU.hasValue()) 2583 GenerateArg(Args, OPT_aux_target_cpu, *Opts.AuxTargetCPU, SA); 2584 2585 if (Opts.AuxTargetFeatures.hasValue()) 2586 for (const auto &Feature : *Opts.AuxTargetFeatures) 2587 GenerateArg(Args, OPT_aux_target_feature, Feature, SA); 2588 2589 { 2590 StringRef Preprocessed = Opts.DashX.isPreprocessed() ? "-cpp-output" : ""; 2591 StringRef ModuleMap = 2592 Opts.DashX.getFormat() == InputKind::ModuleMap ? "-module-map" : ""; 2593 StringRef Header = IsHeader ? "-header" : ""; 2594 2595 StringRef Lang; 2596 switch (Opts.DashX.getLanguage()) { 2597 case Language::C: 2598 Lang = "c"; 2599 break; 2600 case Language::OpenCL: 2601 Lang = "cl"; 2602 break; 2603 case Language::CUDA: 2604 Lang = "cuda"; 2605 break; 2606 case Language::HIP: 2607 Lang = "hip"; 2608 break; 2609 case Language::CXX: 2610 Lang = "c++"; 2611 break; 2612 case Language::ObjC: 2613 Lang = "objective-c"; 2614 break; 2615 case Language::ObjCXX: 2616 Lang = "objective-c++"; 2617 break; 2618 case Language::RenderScript: 2619 Lang = "renderscript"; 2620 break; 2621 case Language::Asm: 2622 Lang = "assembler-with-cpp"; 2623 break; 2624 case Language::Unknown: 2625 assert(Opts.DashX.getFormat() == InputKind::Precompiled && 2626 "Generating -x argument for unknown language (not precompiled)."); 2627 Lang = "ast"; 2628 break; 2629 case Language::LLVM_IR: 2630 Lang = "ir"; 2631 break; 2632 } 2633 2634 GenerateArg(Args, OPT_x, Lang + Header + ModuleMap + Preprocessed, SA); 2635 } 2636 2637 // OPT_INPUT has a unique class, generate it directly. 2638 for (const auto &Input : Opts.Inputs) 2639 Args.push_back(SA(Input.getFile())); 2640 } 2641 2642 static bool ParseFrontendArgsImpl(FrontendOptions &Opts, ArgList &Args, 2643 DiagnosticsEngine &Diags, 2644 bool &IsHeaderFile) { 2645 FrontendOptions &FrontendOpts = Opts; 2646 bool Success = true; 2647 unsigned NumErrorsBefore = Diags.getNumErrors(); 2648 #define FRONTEND_OPTION_WITH_MARSHALLING( \ 2649 PREFIX_TYPE, NAME, ID, KIND, GROUP, ALIAS, ALIASARGS, FLAGS, PARAM, \ 2650 HELPTEXT, METAVAR, VALUES, SPELLING, SHOULD_PARSE, ALWAYS_EMIT, KEYPATH, \ 2651 DEFAULT_VALUE, IMPLIED_CHECK, IMPLIED_VALUE, NORMALIZER, DENORMALIZER, \ 2652 MERGER, EXTRACTOR, TABLE_INDEX) \ 2653 PARSE_OPTION_WITH_MARSHALLING(Args, Diags, Success, ID, FLAGS, PARAM, \ 2654 SHOULD_PARSE, KEYPATH, DEFAULT_VALUE, \ 2655 IMPLIED_CHECK, IMPLIED_VALUE, NORMALIZER, \ 2656 MERGER, TABLE_INDEX) 2657 #include "clang/Driver/Options.inc" 2658 #undef FRONTEND_OPTION_WITH_MARSHALLING 2659 2660 Opts.ProgramAction = frontend::ParseSyntaxOnly; 2661 if (const Arg *A = Args.getLastArg(OPT_Action_Group)) { 2662 OptSpecifier Opt = OptSpecifier(A->getOption().getID()); 2663 Optional<frontend::ActionKind> ProgramAction = getFrontendAction(Opt); 2664 assert(ProgramAction && "Option specifier not in Action_Group."); 2665 2666 if (ProgramAction == frontend::ASTDump && 2667 (Opt == OPT_ast_dump_all_EQ || Opt == OPT_ast_dump_EQ)) { 2668 unsigned Val = llvm::StringSwitch<unsigned>(A->getValue()) 2669 .CaseLower("default", ADOF_Default) 2670 .CaseLower("json", ADOF_JSON) 2671 .Default(std::numeric_limits<unsigned>::max()); 2672 2673 if (Val != std::numeric_limits<unsigned>::max()) 2674 Opts.ASTDumpFormat = static_cast<ASTDumpOutputFormat>(Val); 2675 else { 2676 Diags.Report(diag::err_drv_invalid_value) 2677 << A->getAsString(Args) << A->getValue(); 2678 Opts.ASTDumpFormat = ADOF_Default; 2679 } 2680 } 2681 2682 if (ProgramAction == frontend::FixIt && Opt == OPT_fixit_EQ) 2683 Opts.FixItSuffix = A->getValue(); 2684 2685 if (ProgramAction == frontend::GenerateInterfaceStubs) { 2686 StringRef ArgStr = 2687 Args.hasArg(OPT_interface_stub_version_EQ) 2688 ? Args.getLastArgValue(OPT_interface_stub_version_EQ) 2689 : "experimental-ifs-v2"; 2690 if (ArgStr == "experimental-yaml-elf-v1" || 2691 ArgStr == "experimental-ifs-v1" || 2692 ArgStr == "experimental-tapi-elf-v1") { 2693 std::string ErrorMessage = 2694 "Invalid interface stub format: " + ArgStr.str() + 2695 " is deprecated."; 2696 Diags.Report(diag::err_drv_invalid_value) 2697 << "Must specify a valid interface stub format type, ie: " 2698 "-interface-stub-version=experimental-ifs-v2" 2699 << ErrorMessage; 2700 ProgramAction = frontend::ParseSyntaxOnly; 2701 } else if (!ArgStr.startswith("experimental-ifs-")) { 2702 std::string ErrorMessage = 2703 "Invalid interface stub format: " + ArgStr.str() + "."; 2704 Diags.Report(diag::err_drv_invalid_value) 2705 << "Must specify a valid interface stub format type, ie: " 2706 "-interface-stub-version=experimental-ifs-v2" 2707 << ErrorMessage; 2708 ProgramAction = frontend::ParseSyntaxOnly; 2709 } 2710 } 2711 2712 Opts.ProgramAction = *ProgramAction; 2713 } 2714 2715 if (const Arg* A = Args.getLastArg(OPT_plugin)) { 2716 Opts.Plugins.emplace_back(A->getValue(0)); 2717 Opts.ProgramAction = frontend::PluginAction; 2718 Opts.ActionName = A->getValue(); 2719 } 2720 for (const auto *AA : Args.filtered(OPT_plugin_arg)) 2721 Opts.PluginArgs[AA->getValue(0)].emplace_back(AA->getValue(1)); 2722 2723 for (const std::string &Arg : 2724 Args.getAllArgValues(OPT_ftest_module_file_extension_EQ)) { 2725 std::string BlockName; 2726 unsigned MajorVersion; 2727 unsigned MinorVersion; 2728 bool Hashed; 2729 std::string UserInfo; 2730 if (parseTestModuleFileExtensionArg(Arg, BlockName, MajorVersion, 2731 MinorVersion, Hashed, UserInfo)) { 2732 Diags.Report(diag::err_test_module_file_extension_format) << Arg; 2733 2734 continue; 2735 } 2736 2737 // Add the testing module file extension. 2738 Opts.ModuleFileExtensions.push_back( 2739 std::make_shared<TestModuleFileExtension>( 2740 BlockName, MajorVersion, MinorVersion, Hashed, UserInfo)); 2741 } 2742 2743 if (const Arg *A = Args.getLastArg(OPT_code_completion_at)) { 2744 Opts.CodeCompletionAt = 2745 ParsedSourceLocation::FromString(A->getValue()); 2746 if (Opts.CodeCompletionAt.FileName.empty()) 2747 Diags.Report(diag::err_drv_invalid_value) 2748 << A->getAsString(Args) << A->getValue(); 2749 } 2750 2751 Opts.Plugins = Args.getAllArgValues(OPT_load); 2752 Opts.ASTDumpDecls = Args.hasArg(OPT_ast_dump, OPT_ast_dump_EQ); 2753 Opts.ASTDumpAll = Args.hasArg(OPT_ast_dump_all, OPT_ast_dump_all_EQ); 2754 // Only the -fmodule-file=<file> form. 2755 for (const auto *A : Args.filtered(OPT_fmodule_file)) { 2756 StringRef Val = A->getValue(); 2757 if (Val.find('=') == StringRef::npos) 2758 Opts.ModuleFiles.push_back(std::string(Val)); 2759 } 2760 2761 if (Opts.ProgramAction != frontend::GenerateModule && Opts.IsSystemModule) 2762 Diags.Report(diag::err_drv_argument_only_allowed_with) << "-fsystem-module" 2763 << "-emit-module"; 2764 2765 if (Args.hasArg(OPT_aux_target_cpu)) 2766 Opts.AuxTargetCPU = std::string(Args.getLastArgValue(OPT_aux_target_cpu)); 2767 if (Args.hasArg(OPT_aux_target_feature)) 2768 Opts.AuxTargetFeatures = Args.getAllArgValues(OPT_aux_target_feature); 2769 2770 if (Opts.ARCMTAction != FrontendOptions::ARCMT_None && 2771 Opts.ObjCMTAction != FrontendOptions::ObjCMT_None) { 2772 Diags.Report(diag::err_drv_argument_not_allowed_with) 2773 << "ARC migration" << "ObjC migration"; 2774 } 2775 2776 InputKind DashX(Language::Unknown); 2777 if (const Arg *A = Args.getLastArg(OPT_x)) { 2778 StringRef XValue = A->getValue(); 2779 2780 // Parse suffixes: '<lang>(-header|[-module-map][-cpp-output])'. 2781 // FIXME: Supporting '<lang>-header-cpp-output' would be useful. 2782 bool Preprocessed = XValue.consume_back("-cpp-output"); 2783 bool ModuleMap = XValue.consume_back("-module-map"); 2784 IsHeaderFile = !Preprocessed && !ModuleMap && 2785 XValue != "precompiled-header" && 2786 XValue.consume_back("-header"); 2787 2788 // Principal languages. 2789 DashX = llvm::StringSwitch<InputKind>(XValue) 2790 .Case("c", Language::C) 2791 .Case("cl", Language::OpenCL) 2792 .Case("cuda", Language::CUDA) 2793 .Case("hip", Language::HIP) 2794 .Case("c++", Language::CXX) 2795 .Case("objective-c", Language::ObjC) 2796 .Case("objective-c++", Language::ObjCXX) 2797 .Case("renderscript", Language::RenderScript) 2798 .Default(Language::Unknown); 2799 2800 // "objc[++]-cpp-output" is an acceptable synonym for 2801 // "objective-c[++]-cpp-output". 2802 if (DashX.isUnknown() && Preprocessed && !IsHeaderFile && !ModuleMap) 2803 DashX = llvm::StringSwitch<InputKind>(XValue) 2804 .Case("objc", Language::ObjC) 2805 .Case("objc++", Language::ObjCXX) 2806 .Default(Language::Unknown); 2807 2808 // Some special cases cannot be combined with suffixes. 2809 if (DashX.isUnknown() && !Preprocessed && !ModuleMap && !IsHeaderFile) 2810 DashX = llvm::StringSwitch<InputKind>(XValue) 2811 .Case("cpp-output", InputKind(Language::C).getPreprocessed()) 2812 .Case("assembler-with-cpp", Language::Asm) 2813 .Cases("ast", "pcm", "precompiled-header", 2814 InputKind(Language::Unknown, InputKind::Precompiled)) 2815 .Case("ir", Language::LLVM_IR) 2816 .Default(Language::Unknown); 2817 2818 if (DashX.isUnknown()) 2819 Diags.Report(diag::err_drv_invalid_value) 2820 << A->getAsString(Args) << A->getValue(); 2821 2822 if (Preprocessed) 2823 DashX = DashX.getPreprocessed(); 2824 if (ModuleMap) 2825 DashX = DashX.withFormat(InputKind::ModuleMap); 2826 } 2827 2828 // '-' is the default input if none is given. 2829 std::vector<std::string> Inputs = Args.getAllArgValues(OPT_INPUT); 2830 Opts.Inputs.clear(); 2831 if (Inputs.empty()) 2832 Inputs.push_back("-"); 2833 for (unsigned i = 0, e = Inputs.size(); i != e; ++i) { 2834 InputKind IK = DashX; 2835 if (IK.isUnknown()) { 2836 IK = FrontendOptions::getInputKindForExtension( 2837 StringRef(Inputs[i]).rsplit('.').second); 2838 // FIXME: Warn on this? 2839 if (IK.isUnknown()) 2840 IK = Language::C; 2841 // FIXME: Remove this hack. 2842 if (i == 0) 2843 DashX = IK; 2844 } 2845 2846 bool IsSystem = false; 2847 2848 // The -emit-module action implicitly takes a module map. 2849 if (Opts.ProgramAction == frontend::GenerateModule && 2850 IK.getFormat() == InputKind::Source) { 2851 IK = IK.withFormat(InputKind::ModuleMap); 2852 IsSystem = Opts.IsSystemModule; 2853 } 2854 2855 Opts.Inputs.emplace_back(std::move(Inputs[i]), IK, IsSystem); 2856 } 2857 2858 Opts.DashX = DashX; 2859 2860 return Diags.getNumErrors() == NumErrorsBefore; 2861 } 2862 2863 static bool ParseFrontendArgs(CompilerInvocation &Res, FrontendOptions &Opts, 2864 ArgList &Args, DiagnosticsEngine &Diags, 2865 bool &IsHeaderFile) { 2866 FrontendOptions DummyOpts; 2867 2868 return RoundTrip( 2869 [&IsHeaderFile](CompilerInvocation &Res, ArgList &Args, 2870 DiagnosticsEngine &Diags) { 2871 // ParseFrontendArgsImpl handles frontend action without querying the 2872 // options. Let's do it now so RoundTrip considers us responsible for 2873 // generating it. 2874 for (const auto &Pair : getFrontendActionTable()) 2875 Args.hasArg(Pair.second); 2876 2877 return ParseFrontendArgsImpl(Res.getFrontendOpts(), Args, Diags, 2878 IsHeaderFile); 2879 }, 2880 [&IsHeaderFile](CompilerInvocation &Res, 2881 SmallVectorImpl<const char *> &Args, 2882 CompilerInvocation::StringAllocator SA) { 2883 GenerateFrontendArgs(Res.getFrontendOpts(), Args, SA, IsHeaderFile); 2884 }, 2885 [&DummyOpts](CompilerInvocation &Res) { 2886 std::swap(Res.getFrontendOpts(), DummyOpts); 2887 }, 2888 Res, Args, Diags, "FrontendOptions"); 2889 } 2890 2891 std::string CompilerInvocation::GetResourcesPath(const char *Argv0, 2892 void *MainAddr) { 2893 std::string ClangExecutable = 2894 llvm::sys::fs::getMainExecutable(Argv0, MainAddr); 2895 return Driver::GetResourcesPath(ClangExecutable, CLANG_RESOURCE_DIR); 2896 } 2897 2898 void CompilerInvocation::GenerateHeaderSearchArgs( 2899 HeaderSearchOptions &Opts, SmallVectorImpl<const char *> &Args, 2900 CompilerInvocation::StringAllocator SA) { 2901 const HeaderSearchOptions *HeaderSearchOpts = &Opts; 2902 #define HEADER_SEARCH_OPTION_WITH_MARSHALLING( \ 2903 PREFIX_TYPE, NAME, ID, KIND, GROUP, ALIAS, ALIASARGS, FLAGS, PARAM, \ 2904 HELPTEXT, METAVAR, VALUES, SPELLING, SHOULD_PARSE, ALWAYS_EMIT, KEYPATH, \ 2905 DEFAULT_VALUE, IMPLIED_CHECK, IMPLIED_VALUE, NORMALIZER, DENORMALIZER, \ 2906 MERGER, EXTRACTOR, TABLE_INDEX) \ 2907 GENERATE_OPTION_WITH_MARSHALLING( \ 2908 Args, SA, KIND, FLAGS, SPELLING, ALWAYS_EMIT, KEYPATH, DEFAULT_VALUE, \ 2909 IMPLIED_CHECK, IMPLIED_VALUE, DENORMALIZER, EXTRACTOR, TABLE_INDEX) 2910 #include "clang/Driver/Options.inc" 2911 #undef HEADER_SEARCH_OPTION_WITH_MARSHALLING 2912 2913 if (Opts.UseLibcxx) 2914 GenerateArg(Args, OPT_stdlib_EQ, "libc++", SA); 2915 2916 if (!Opts.ModuleCachePath.empty()) 2917 GenerateArg(Args, OPT_fmodules_cache_path, Opts.ModuleCachePath, SA); 2918 2919 for (const auto &File : Opts.PrebuiltModuleFiles) 2920 GenerateArg(Args, OPT_fmodule_file, File.first + "=" + File.second, SA); 2921 2922 for (const auto &Path : Opts.PrebuiltModulePaths) 2923 GenerateArg(Args, OPT_fprebuilt_module_path, Path, SA); 2924 2925 for (const auto &Macro : Opts.ModulesIgnoreMacros) 2926 GenerateArg(Args, OPT_fmodules_ignore_macro, Macro.val(), SA); 2927 2928 auto Matches = [](const HeaderSearchOptions::Entry &Entry, 2929 llvm::ArrayRef<frontend::IncludeDirGroup> Groups, 2930 llvm::Optional<bool> IsFramework, 2931 llvm::Optional<bool> IgnoreSysRoot) { 2932 return llvm::find(Groups, Entry.Group) != Groups.end() && 2933 (!IsFramework || (Entry.IsFramework == *IsFramework)) && 2934 (!IgnoreSysRoot || (Entry.IgnoreSysRoot == *IgnoreSysRoot)); 2935 }; 2936 2937 auto It = Opts.UserEntries.begin(); 2938 auto End = Opts.UserEntries.end(); 2939 2940 // Add -I..., -F..., and -index-header-map options in order. 2941 for (; It < End && 2942 Matches(*It, {frontend::IndexHeaderMap, frontend::Angled}, None, true); 2943 ++It) { 2944 OptSpecifier Opt = [It, Matches]() { 2945 if (Matches(*It, frontend::IndexHeaderMap, true, true)) 2946 return OPT_F; 2947 if (Matches(*It, frontend::IndexHeaderMap, false, true)) 2948 return OPT_I; 2949 if (Matches(*It, frontend::Angled, true, true)) 2950 return OPT_F; 2951 if (Matches(*It, frontend::Angled, false, true)) 2952 return OPT_I; 2953 llvm_unreachable("Unexpected HeaderSearchOptions::Entry."); 2954 }(); 2955 2956 if (It->Group == frontend::IndexHeaderMap) 2957 GenerateArg(Args, OPT_index_header_map, SA); 2958 GenerateArg(Args, Opt, It->Path, SA); 2959 }; 2960 2961 // Note: some paths that came from "[-iprefix=xx] -iwithprefixbefore=yy" may 2962 // have already been generated as "-I[xx]yy". If that's the case, their 2963 // position on command line was such that this has no semantic impact on 2964 // include paths. 2965 for (; It < End && 2966 Matches(*It, {frontend::After, frontend::Angled}, false, true); 2967 ++It) { 2968 OptSpecifier Opt = 2969 It->Group == frontend::After ? OPT_iwithprefix : OPT_iwithprefixbefore; 2970 GenerateArg(Args, Opt, It->Path, SA); 2971 } 2972 2973 // Note: Some paths that came from "-idirafter=xxyy" may have already been 2974 // generated as "-iwithprefix=xxyy". If that's the case, their position on 2975 // command line was such that this has no semantic impact on include paths. 2976 for (; It < End && Matches(*It, {frontend::After}, false, true); ++It) 2977 GenerateArg(Args, OPT_idirafter, It->Path, SA); 2978 for (; It < End && Matches(*It, {frontend::Quoted}, false, true); ++It) 2979 GenerateArg(Args, OPT_iquote, It->Path, SA); 2980 for (; It < End && Matches(*It, {frontend::System}, false, None); ++It) 2981 GenerateArg(Args, It->IgnoreSysRoot ? OPT_isystem : OPT_iwithsysroot, 2982 It->Path, SA); 2983 for (; It < End && Matches(*It, {frontend::System}, true, true); ++It) 2984 GenerateArg(Args, OPT_iframework, It->Path, SA); 2985 for (; It < End && Matches(*It, {frontend::System}, true, false); ++It) 2986 GenerateArg(Args, OPT_iframeworkwithsysroot, It->Path, SA); 2987 2988 // Add the paths for the various language specific isystem flags. 2989 for (; It < End && Matches(*It, {frontend::CSystem}, false, true); ++It) 2990 GenerateArg(Args, OPT_c_isystem, It->Path, SA); 2991 for (; It < End && Matches(*It, {frontend::CXXSystem}, false, true); ++It) 2992 GenerateArg(Args, OPT_cxx_isystem, It->Path, SA); 2993 for (; It < End && Matches(*It, {frontend::ObjCSystem}, false, true); ++It) 2994 GenerateArg(Args, OPT_objc_isystem, It->Path, SA); 2995 for (; It < End && Matches(*It, {frontend::ObjCXXSystem}, false, true); ++It) 2996 GenerateArg(Args, OPT_objcxx_isystem, It->Path, SA); 2997 2998 // Add the internal paths from a driver that detects standard include paths. 2999 // Note: Some paths that came from "-internal-isystem" arguments may have 3000 // already been generated as "-isystem". If that's the case, their position on 3001 // command line was such that this has no semantic impact on include paths. 3002 for (; It < End && 3003 Matches(*It, {frontend::System, frontend::ExternCSystem}, false, true); 3004 ++It) { 3005 OptSpecifier Opt = It->Group == frontend::System 3006 ? OPT_internal_isystem 3007 : OPT_internal_externc_isystem; 3008 GenerateArg(Args, Opt, It->Path, SA); 3009 } 3010 3011 assert(It == End && "Unhandled HeaderSearchOption::Entry."); 3012 3013 // Add the path prefixes which are implicitly treated as being system headers. 3014 for (const auto &P : Opts.SystemHeaderPrefixes) { 3015 OptSpecifier Opt = P.IsSystemHeader ? OPT_system_header_prefix 3016 : OPT_no_system_header_prefix; 3017 GenerateArg(Args, Opt, P.Prefix, SA); 3018 } 3019 3020 for (const std::string &F : Opts.VFSOverlayFiles) 3021 GenerateArg(Args, OPT_ivfsoverlay, F, SA); 3022 } 3023 3024 static bool ParseHeaderSearchArgs(HeaderSearchOptions &Opts, ArgList &Args, 3025 DiagnosticsEngine &Diags, 3026 const std::string &WorkingDir) { 3027 HeaderSearchOptions *HeaderSearchOpts = &Opts; 3028 bool Success = true; 3029 3030 #define HEADER_SEARCH_OPTION_WITH_MARSHALLING( \ 3031 PREFIX_TYPE, NAME, ID, KIND, GROUP, ALIAS, ALIASARGS, FLAGS, PARAM, \ 3032 HELPTEXT, METAVAR, VALUES, SPELLING, SHOULD_PARSE, ALWAYS_EMIT, KEYPATH, \ 3033 DEFAULT_VALUE, IMPLIED_CHECK, IMPLIED_VALUE, NORMALIZER, DENORMALIZER, \ 3034 MERGER, EXTRACTOR, TABLE_INDEX) \ 3035 PARSE_OPTION_WITH_MARSHALLING(Args, Diags, Success, ID, FLAGS, PARAM, \ 3036 SHOULD_PARSE, KEYPATH, DEFAULT_VALUE, \ 3037 IMPLIED_CHECK, IMPLIED_VALUE, NORMALIZER, \ 3038 MERGER, TABLE_INDEX) 3039 #include "clang/Driver/Options.inc" 3040 #undef HEADER_SEARCH_OPTION_WITH_MARSHALLING 3041 3042 if (const Arg *A = Args.getLastArg(OPT_stdlib_EQ)) 3043 Opts.UseLibcxx = (strcmp(A->getValue(), "libc++") == 0); 3044 3045 // Canonicalize -fmodules-cache-path before storing it. 3046 SmallString<128> P(Args.getLastArgValue(OPT_fmodules_cache_path)); 3047 if (!(P.empty() || llvm::sys::path::is_absolute(P))) { 3048 if (WorkingDir.empty()) 3049 llvm::sys::fs::make_absolute(P); 3050 else 3051 llvm::sys::fs::make_absolute(WorkingDir, P); 3052 } 3053 llvm::sys::path::remove_dots(P); 3054 Opts.ModuleCachePath = std::string(P.str()); 3055 3056 // Only the -fmodule-file=<name>=<file> form. 3057 for (const auto *A : Args.filtered(OPT_fmodule_file)) { 3058 StringRef Val = A->getValue(); 3059 if (Val.find('=') != StringRef::npos){ 3060 auto Split = Val.split('='); 3061 Opts.PrebuiltModuleFiles.insert( 3062 {std::string(Split.first), std::string(Split.second)}); 3063 } 3064 } 3065 for (const auto *A : Args.filtered(OPT_fprebuilt_module_path)) 3066 Opts.AddPrebuiltModulePath(A->getValue()); 3067 3068 for (const auto *A : Args.filtered(OPT_fmodules_ignore_macro)) { 3069 StringRef MacroDef = A->getValue(); 3070 Opts.ModulesIgnoreMacros.insert( 3071 llvm::CachedHashString(MacroDef.split('=').first)); 3072 } 3073 3074 // Add -I..., -F..., and -index-header-map options in order. 3075 bool IsIndexHeaderMap = false; 3076 bool IsSysrootSpecified = 3077 Args.hasArg(OPT__sysroot_EQ) || Args.hasArg(OPT_isysroot); 3078 for (const auto *A : Args.filtered(OPT_I, OPT_F, OPT_index_header_map)) { 3079 if (A->getOption().matches(OPT_index_header_map)) { 3080 // -index-header-map applies to the next -I or -F. 3081 IsIndexHeaderMap = true; 3082 continue; 3083 } 3084 3085 frontend::IncludeDirGroup Group = 3086 IsIndexHeaderMap ? frontend::IndexHeaderMap : frontend::Angled; 3087 3088 bool IsFramework = A->getOption().matches(OPT_F); 3089 std::string Path = A->getValue(); 3090 3091 if (IsSysrootSpecified && !IsFramework && A->getValue()[0] == '=') { 3092 SmallString<32> Buffer; 3093 llvm::sys::path::append(Buffer, Opts.Sysroot, 3094 llvm::StringRef(A->getValue()).substr(1)); 3095 Path = std::string(Buffer.str()); 3096 } 3097 3098 Opts.AddPath(Path, Group, IsFramework, 3099 /*IgnoreSysroot*/ true); 3100 IsIndexHeaderMap = false; 3101 } 3102 3103 // Add -iprefix/-iwithprefix/-iwithprefixbefore options. 3104 StringRef Prefix = ""; // FIXME: This isn't the correct default prefix. 3105 for (const auto *A : 3106 Args.filtered(OPT_iprefix, OPT_iwithprefix, OPT_iwithprefixbefore)) { 3107 if (A->getOption().matches(OPT_iprefix)) 3108 Prefix = A->getValue(); 3109 else if (A->getOption().matches(OPT_iwithprefix)) 3110 Opts.AddPath(Prefix.str() + A->getValue(), frontend::After, false, true); 3111 else 3112 Opts.AddPath(Prefix.str() + A->getValue(), frontend::Angled, false, true); 3113 } 3114 3115 for (const auto *A : Args.filtered(OPT_idirafter)) 3116 Opts.AddPath(A->getValue(), frontend::After, false, true); 3117 for (const auto *A : Args.filtered(OPT_iquote)) 3118 Opts.AddPath(A->getValue(), frontend::Quoted, false, true); 3119 for (const auto *A : Args.filtered(OPT_isystem, OPT_iwithsysroot)) 3120 Opts.AddPath(A->getValue(), frontend::System, false, 3121 !A->getOption().matches(OPT_iwithsysroot)); 3122 for (const auto *A : Args.filtered(OPT_iframework)) 3123 Opts.AddPath(A->getValue(), frontend::System, true, true); 3124 for (const auto *A : Args.filtered(OPT_iframeworkwithsysroot)) 3125 Opts.AddPath(A->getValue(), frontend::System, /*IsFramework=*/true, 3126 /*IgnoreSysRoot=*/false); 3127 3128 // Add the paths for the various language specific isystem flags. 3129 for (const auto *A : Args.filtered(OPT_c_isystem)) 3130 Opts.AddPath(A->getValue(), frontend::CSystem, false, true); 3131 for (const auto *A : Args.filtered(OPT_cxx_isystem)) 3132 Opts.AddPath(A->getValue(), frontend::CXXSystem, false, true); 3133 for (const auto *A : Args.filtered(OPT_objc_isystem)) 3134 Opts.AddPath(A->getValue(), frontend::ObjCSystem, false,true); 3135 for (const auto *A : Args.filtered(OPT_objcxx_isystem)) 3136 Opts.AddPath(A->getValue(), frontend::ObjCXXSystem, false, true); 3137 3138 // Add the internal paths from a driver that detects standard include paths. 3139 for (const auto *A : 3140 Args.filtered(OPT_internal_isystem, OPT_internal_externc_isystem)) { 3141 frontend::IncludeDirGroup Group = frontend::System; 3142 if (A->getOption().matches(OPT_internal_externc_isystem)) 3143 Group = frontend::ExternCSystem; 3144 Opts.AddPath(A->getValue(), Group, false, true); 3145 } 3146 3147 // Add the path prefixes which are implicitly treated as being system headers. 3148 for (const auto *A : 3149 Args.filtered(OPT_system_header_prefix, OPT_no_system_header_prefix)) 3150 Opts.AddSystemHeaderPrefix( 3151 A->getValue(), A->getOption().matches(OPT_system_header_prefix)); 3152 3153 for (const auto *A : Args.filtered(OPT_ivfsoverlay)) 3154 Opts.AddVFSOverlayFile(A->getValue()); 3155 3156 return Success; 3157 } 3158 3159 void CompilerInvocation::ParseHeaderSearchArgs(CompilerInvocation &Res, 3160 HeaderSearchOptions &Opts, 3161 ArgList &Args, 3162 DiagnosticsEngine &Diags, 3163 const std::string &WorkingDir) { 3164 auto DummyOpts = std::make_shared<HeaderSearchOptions>(); 3165 3166 RoundTrip( 3167 [&WorkingDir](CompilerInvocation &Res, ArgList &Args, 3168 DiagnosticsEngine &Diags) { 3169 return ::ParseHeaderSearchArgs(Res.getHeaderSearchOpts(), Args, Diags, 3170 WorkingDir); 3171 }, 3172 [](CompilerInvocation &Res, SmallVectorImpl<const char *> &GeneratedArgs, 3173 CompilerInvocation::StringAllocator SA) { 3174 GenerateHeaderSearchArgs(Res.getHeaderSearchOpts(), GeneratedArgs, SA); 3175 }, 3176 [&DummyOpts](CompilerInvocation &Res) { 3177 Res.HeaderSearchOpts.swap(DummyOpts); 3178 }, 3179 Res, Args, Diags, "HeaderSearchOptions"); 3180 } 3181 3182 void CompilerInvocation::setLangDefaults(LangOptions &Opts, InputKind IK, 3183 const llvm::Triple &T, 3184 std::vector<std::string> &Includes, 3185 LangStandard::Kind LangStd) { 3186 // Set some properties which depend solely on the input kind; it would be nice 3187 // to move these to the language standard, and have the driver resolve the 3188 // input kind + language standard. 3189 // 3190 // FIXME: Perhaps a better model would be for a single source file to have 3191 // multiple language standards (C / C++ std, ObjC std, OpenCL std, OpenMP std) 3192 // simultaneously active? 3193 if (IK.getLanguage() == Language::Asm) { 3194 Opts.AsmPreprocessor = 1; 3195 } else if (IK.isObjectiveC()) { 3196 Opts.ObjC = 1; 3197 } 3198 3199 if (LangStd == LangStandard::lang_unspecified) { 3200 // Based on the base language, pick one. 3201 switch (IK.getLanguage()) { 3202 case Language::Unknown: 3203 case Language::LLVM_IR: 3204 llvm_unreachable("Invalid input kind!"); 3205 case Language::OpenCL: 3206 LangStd = LangStandard::lang_opencl10; 3207 break; 3208 case Language::CUDA: 3209 LangStd = LangStandard::lang_cuda; 3210 break; 3211 case Language::Asm: 3212 case Language::C: 3213 #if defined(CLANG_DEFAULT_STD_C) 3214 LangStd = CLANG_DEFAULT_STD_C; 3215 #else 3216 // The PS4 uses C99 as the default C standard. 3217 if (T.isPS4()) 3218 LangStd = LangStandard::lang_gnu99; 3219 else 3220 LangStd = LangStandard::lang_gnu17; 3221 #endif 3222 break; 3223 case Language::ObjC: 3224 #if defined(CLANG_DEFAULT_STD_C) 3225 LangStd = CLANG_DEFAULT_STD_C; 3226 #else 3227 LangStd = LangStandard::lang_gnu11; 3228 #endif 3229 break; 3230 case Language::CXX: 3231 case Language::ObjCXX: 3232 #if defined(CLANG_DEFAULT_STD_CXX) 3233 LangStd = CLANG_DEFAULT_STD_CXX; 3234 #else 3235 LangStd = LangStandard::lang_gnucxx14; 3236 #endif 3237 break; 3238 case Language::RenderScript: 3239 LangStd = LangStandard::lang_c99; 3240 break; 3241 case Language::HIP: 3242 LangStd = LangStandard::lang_hip; 3243 break; 3244 } 3245 } 3246 3247 const LangStandard &Std = LangStandard::getLangStandardForKind(LangStd); 3248 Opts.LangStd = LangStd; 3249 Opts.LineComment = Std.hasLineComments(); 3250 Opts.C99 = Std.isC99(); 3251 Opts.C11 = Std.isC11(); 3252 Opts.C17 = Std.isC17(); 3253 Opts.C2x = Std.isC2x(); 3254 Opts.CPlusPlus = Std.isCPlusPlus(); 3255 Opts.CPlusPlus11 = Std.isCPlusPlus11(); 3256 Opts.CPlusPlus14 = Std.isCPlusPlus14(); 3257 Opts.CPlusPlus17 = Std.isCPlusPlus17(); 3258 Opts.CPlusPlus20 = Std.isCPlusPlus20(); 3259 Opts.CPlusPlus2b = Std.isCPlusPlus2b(); 3260 Opts.GNUMode = Std.isGNUMode(); 3261 Opts.GNUCVersion = 0; 3262 Opts.HexFloats = Std.hasHexFloats(); 3263 Opts.ImplicitInt = Std.hasImplicitInt(); 3264 3265 Opts.CPlusPlusModules = Opts.CPlusPlus20; 3266 3267 // Set OpenCL Version. 3268 Opts.OpenCL = Std.isOpenCL(); 3269 if (LangStd == LangStandard::lang_opencl10) 3270 Opts.OpenCLVersion = 100; 3271 else if (LangStd == LangStandard::lang_opencl11) 3272 Opts.OpenCLVersion = 110; 3273 else if (LangStd == LangStandard::lang_opencl12) 3274 Opts.OpenCLVersion = 120; 3275 else if (LangStd == LangStandard::lang_opencl20) 3276 Opts.OpenCLVersion = 200; 3277 else if (LangStd == LangStandard::lang_opencl30) 3278 Opts.OpenCLVersion = 300; 3279 else if (LangStd == LangStandard::lang_openclcpp) 3280 Opts.OpenCLCPlusPlusVersion = 100; 3281 3282 // OpenCL has some additional defaults. 3283 if (Opts.OpenCL) { 3284 Opts.AltiVec = 0; 3285 Opts.ZVector = 0; 3286 Opts.setDefaultFPContractMode(LangOptions::FPM_On); 3287 Opts.OpenCLCPlusPlus = Opts.CPlusPlus; 3288 Opts.OpenCLPipe = Opts.OpenCLCPlusPlus || Opts.OpenCLVersion == 200; 3289 Opts.OpenCLGenericAddressSpace = 3290 Opts.OpenCLCPlusPlus || Opts.OpenCLVersion == 200; 3291 3292 // Include default header file for OpenCL. 3293 if (Opts.IncludeDefaultHeader) { 3294 if (Opts.DeclareOpenCLBuiltins) { 3295 // Only include base header file for builtin types and constants. 3296 Includes.push_back("opencl-c-base.h"); 3297 } else { 3298 Includes.push_back("opencl-c.h"); 3299 } 3300 } 3301 } 3302 3303 Opts.HIP = IK.getLanguage() == Language::HIP; 3304 Opts.CUDA = IK.getLanguage() == Language::CUDA || Opts.HIP; 3305 if (Opts.HIP) { 3306 // HIP toolchain does not support 'Fast' FPOpFusion in backends since it 3307 // fuses multiplication/addition instructions without contract flag from 3308 // device library functions in LLVM bitcode, which causes accuracy loss in 3309 // certain math functions, e.g. tan(-1e20) becomes -0.933 instead of 0.8446. 3310 // For device library functions in bitcode to work, 'Strict' or 'Standard' 3311 // FPOpFusion options in backends is needed. Therefore 'fast-honor-pragmas' 3312 // FP contract option is used to allow fuse across statements in frontend 3313 // whereas respecting contract flag in backend. 3314 Opts.setDefaultFPContractMode(LangOptions::FPM_FastHonorPragmas); 3315 } else if (Opts.CUDA) { 3316 // Allow fuse across statements disregarding pragmas. 3317 Opts.setDefaultFPContractMode(LangOptions::FPM_Fast); 3318 } 3319 3320 Opts.RenderScript = IK.getLanguage() == Language::RenderScript; 3321 3322 // OpenCL and C++ both have bool, true, false keywords. 3323 Opts.Bool = Opts.OpenCL || Opts.CPlusPlus; 3324 3325 // OpenCL has half keyword 3326 Opts.Half = Opts.OpenCL; 3327 } 3328 3329 /// Check if input file kind and language standard are compatible. 3330 static bool IsInputCompatibleWithStandard(InputKind IK, 3331 const LangStandard &S) { 3332 switch (IK.getLanguage()) { 3333 case Language::Unknown: 3334 case Language::LLVM_IR: 3335 llvm_unreachable("should not parse language flags for this input"); 3336 3337 case Language::C: 3338 case Language::ObjC: 3339 case Language::RenderScript: 3340 return S.getLanguage() == Language::C; 3341 3342 case Language::OpenCL: 3343 return S.getLanguage() == Language::OpenCL; 3344 3345 case Language::CXX: 3346 case Language::ObjCXX: 3347 return S.getLanguage() == Language::CXX; 3348 3349 case Language::CUDA: 3350 // FIXME: What -std= values should be permitted for CUDA compilations? 3351 return S.getLanguage() == Language::CUDA || 3352 S.getLanguage() == Language::CXX; 3353 3354 case Language::HIP: 3355 return S.getLanguage() == Language::CXX || S.getLanguage() == Language::HIP; 3356 3357 case Language::Asm: 3358 // Accept (and ignore) all -std= values. 3359 // FIXME: The -std= value is not ignored; it affects the tokenization 3360 // and preprocessing rules if we're preprocessing this asm input. 3361 return true; 3362 } 3363 3364 llvm_unreachable("unexpected input language"); 3365 } 3366 3367 /// Get language name for given input kind. 3368 static const StringRef GetInputKindName(InputKind IK) { 3369 switch (IK.getLanguage()) { 3370 case Language::C: 3371 return "C"; 3372 case Language::ObjC: 3373 return "Objective-C"; 3374 case Language::CXX: 3375 return "C++"; 3376 case Language::ObjCXX: 3377 return "Objective-C++"; 3378 case Language::OpenCL: 3379 return "OpenCL"; 3380 case Language::CUDA: 3381 return "CUDA"; 3382 case Language::RenderScript: 3383 return "RenderScript"; 3384 case Language::HIP: 3385 return "HIP"; 3386 3387 case Language::Asm: 3388 return "Asm"; 3389 case Language::LLVM_IR: 3390 return "LLVM IR"; 3391 3392 case Language::Unknown: 3393 break; 3394 } 3395 llvm_unreachable("unknown input language"); 3396 } 3397 3398 void CompilerInvocation::GenerateLangArgs(const LangOptions &Opts, 3399 SmallVectorImpl<const char *> &Args, 3400 StringAllocator SA, 3401 const llvm::Triple &T) { 3402 OptSpecifier StdOpt; 3403 switch (Opts.LangStd) { 3404 case LangStandard::lang_opencl10: 3405 case LangStandard::lang_opencl11: 3406 case LangStandard::lang_opencl12: 3407 case LangStandard::lang_opencl20: 3408 case LangStandard::lang_opencl30: 3409 case LangStandard::lang_openclcpp: 3410 StdOpt = OPT_cl_std_EQ; 3411 break; 3412 default: 3413 StdOpt = OPT_std_EQ; 3414 break; 3415 } 3416 3417 auto LangStandard = LangStandard::getLangStandardForKind(Opts.LangStd); 3418 GenerateArg(Args, StdOpt, LangStandard.getName(), SA); 3419 3420 if (Opts.IncludeDefaultHeader) 3421 GenerateArg(Args, OPT_finclude_default_header, SA); 3422 if (Opts.DeclareOpenCLBuiltins) 3423 GenerateArg(Args, OPT_fdeclare_opencl_builtins, SA); 3424 3425 const LangOptions *LangOpts = &Opts; 3426 3427 #define LANG_OPTION_WITH_MARSHALLING( \ 3428 PREFIX_TYPE, NAME, ID, KIND, GROUP, ALIAS, ALIASARGS, FLAGS, PARAM, \ 3429 HELPTEXT, METAVAR, VALUES, SPELLING, SHOULD_PARSE, ALWAYS_EMIT, KEYPATH, \ 3430 DEFAULT_VALUE, IMPLIED_CHECK, IMPLIED_VALUE, NORMALIZER, DENORMALIZER, \ 3431 MERGER, EXTRACTOR, TABLE_INDEX) \ 3432 GENERATE_OPTION_WITH_MARSHALLING( \ 3433 Args, SA, KIND, FLAGS, SPELLING, ALWAYS_EMIT, KEYPATH, DEFAULT_VALUE, \ 3434 IMPLIED_CHECK, IMPLIED_VALUE, DENORMALIZER, EXTRACTOR, TABLE_INDEX) 3435 #include "clang/Driver/Options.inc" 3436 #undef LANG_OPTION_WITH_MARSHALLING 3437 3438 // The '-fcf-protection=' option is generated by CodeGenOpts generator. 3439 3440 if (Opts.ObjC) { 3441 std::string Buffer; 3442 llvm::raw_string_ostream Stream(Buffer); 3443 Stream << Opts.ObjCRuntime; 3444 GenerateArg(Args, OPT_fobjc_runtime_EQ, Stream.str(), SA); 3445 3446 if (Opts.GC == LangOptions::GCOnly) 3447 GenerateArg(Args, OPT_fobjc_gc_only, SA); 3448 else if (Opts.GC == LangOptions::HybridGC) 3449 GenerateArg(Args, OPT_fobjc_gc, SA); 3450 else if (Opts.ObjCAutoRefCount == 1) 3451 GenerateArg(Args, OPT_fobjc_arc, SA); 3452 3453 if (Opts.ObjCWeakRuntime) 3454 GenerateArg(Args, OPT_fobjc_runtime_has_weak, SA); 3455 3456 if (Opts.ObjCWeak) 3457 GenerateArg(Args, OPT_fobjc_weak, SA); 3458 3459 if (Opts.ObjCSubscriptingLegacyRuntime) 3460 GenerateArg(Args, OPT_fobjc_subscripting_legacy_runtime, SA); 3461 } 3462 3463 if (Opts.GNUCVersion != 0) { 3464 unsigned Major = Opts.GNUCVersion / 100 / 100; 3465 unsigned Minor = (Opts.GNUCVersion / 100) % 100; 3466 unsigned Patch = Opts.GNUCVersion % 100; 3467 GenerateArg(Args, OPT_fgnuc_version_EQ, 3468 Twine(Major) + "." + Twine(Minor) + "." + Twine(Patch), SA); 3469 } 3470 3471 if (Opts.SignedOverflowBehavior == LangOptions::SOB_Trapping) { 3472 GenerateArg(Args, OPT_ftrapv, SA); 3473 GenerateArg(Args, OPT_ftrapv_handler, Opts.OverflowHandler, SA); 3474 } else if (Opts.SignedOverflowBehavior == LangOptions::SOB_Defined) { 3475 GenerateArg(Args, OPT_fwrapv, SA); 3476 } 3477 3478 if (Opts.MSCompatibilityVersion != 0) { 3479 unsigned Major = Opts.MSCompatibilityVersion / 10000000; 3480 unsigned Minor = (Opts.MSCompatibilityVersion / 100000) % 100; 3481 unsigned Subminor = Opts.MSCompatibilityVersion % 100000; 3482 GenerateArg(Args, OPT_fms_compatibility_version, 3483 Twine(Major) + "." + Twine(Minor) + "." + Twine(Subminor), SA); 3484 } 3485 3486 if ((!Opts.GNUMode && !Opts.MSVCCompat && !Opts.CPlusPlus17) || T.isOSzOS()) { 3487 if (!Opts.Trigraphs) 3488 GenerateArg(Args, OPT_fno_trigraphs, SA); 3489 } else { 3490 if (Opts.Trigraphs) 3491 GenerateArg(Args, OPT_ftrigraphs, SA); 3492 } 3493 3494 if (Opts.Blocks && !(Opts.OpenCL && Opts.OpenCLVersion == 200)) 3495 GenerateArg(Args, OPT_fblocks, SA); 3496 3497 if (Opts.ConvergentFunctions && 3498 !(Opts.OpenCL || (Opts.CUDA && Opts.CUDAIsDevice) || Opts.SYCLIsDevice)) 3499 GenerateArg(Args, OPT_fconvergent_functions, SA); 3500 3501 if (Opts.NoBuiltin && !Opts.Freestanding) 3502 GenerateArg(Args, OPT_fno_builtin, SA); 3503 3504 if (!Opts.NoBuiltin) 3505 for (const auto &Func : Opts.NoBuiltinFuncs) 3506 GenerateArg(Args, OPT_fno_builtin_, Func, SA); 3507 3508 if (Opts.LongDoubleSize == 128) 3509 GenerateArg(Args, OPT_mlong_double_128, SA); 3510 else if (Opts.LongDoubleSize == 64) 3511 GenerateArg(Args, OPT_mlong_double_64, SA); 3512 3513 // Not generating '-mrtd', it's just an alias for '-fdefault-calling-conv='. 3514 3515 // OpenMP was requested via '-fopenmp', not implied by '-fopenmp-simd' or 3516 // '-fopenmp-targets='. 3517 if (Opts.OpenMP && !Opts.OpenMPSimd) { 3518 GenerateArg(Args, OPT_fopenmp, SA); 3519 3520 if (Opts.OpenMP != 50) 3521 GenerateArg(Args, OPT_fopenmp_version_EQ, Twine(Opts.OpenMP), SA); 3522 3523 if (!Opts.OpenMPUseTLS) 3524 GenerateArg(Args, OPT_fnoopenmp_use_tls, SA); 3525 3526 if (Opts.OpenMPIsDevice) 3527 GenerateArg(Args, OPT_fopenmp_is_device, SA); 3528 3529 if (Opts.OpenMPIRBuilder) 3530 GenerateArg(Args, OPT_fopenmp_enable_irbuilder, SA); 3531 } 3532 3533 if (Opts.OpenMPSimd) { 3534 GenerateArg(Args, OPT_fopenmp_simd, SA); 3535 3536 if (Opts.OpenMP != 50) 3537 GenerateArg(Args, OPT_fopenmp_version_EQ, Twine(Opts.OpenMP), SA); 3538 } 3539 3540 if (Opts.OpenMPCUDANumSMs != 0) 3541 GenerateArg(Args, OPT_fopenmp_cuda_number_of_sm_EQ, 3542 Twine(Opts.OpenMPCUDANumSMs), SA); 3543 3544 if (Opts.OpenMPCUDABlocksPerSM != 0) 3545 GenerateArg(Args, OPT_fopenmp_cuda_blocks_per_sm_EQ, 3546 Twine(Opts.OpenMPCUDABlocksPerSM), SA); 3547 3548 if (Opts.OpenMPCUDAReductionBufNum != 1024) 3549 GenerateArg(Args, OPT_fopenmp_cuda_teams_reduction_recs_num_EQ, 3550 Twine(Opts.OpenMPCUDAReductionBufNum), SA); 3551 3552 if (!Opts.OMPTargetTriples.empty()) { 3553 std::string Targets; 3554 llvm::raw_string_ostream OS(Targets); 3555 llvm::interleave( 3556 Opts.OMPTargetTriples, OS, 3557 [&OS](const llvm::Triple &T) { OS << T.str(); }, ","); 3558 GenerateArg(Args, OPT_fopenmp_targets_EQ, OS.str(), SA); 3559 } 3560 3561 if (!Opts.OMPHostIRFile.empty()) 3562 GenerateArg(Args, OPT_fopenmp_host_ir_file_path, Opts.OMPHostIRFile, SA); 3563 3564 if (Opts.OpenMPCUDAMode) 3565 GenerateArg(Args, OPT_fopenmp_cuda_mode, SA); 3566 3567 if (Opts.OpenMPCUDATargetParallel) 3568 GenerateArg(Args, OPT_fopenmp_cuda_parallel_target_regions, SA); 3569 3570 if (Opts.OpenMPCUDAForceFullRuntime) 3571 GenerateArg(Args, OPT_fopenmp_cuda_force_full_runtime, SA); 3572 3573 // The arguments used to set 'Optimize' and 'OptimizeSize' will be generated 3574 // by CodeGenOptions. 3575 3576 if (Opts.NoInlineDefine && Opts.Optimize) 3577 GenerateArg(Args, OPT_fno_inline, SA); 3578 3579 if (Opts.DefaultFPContractMode == LangOptions::FPM_Fast) 3580 GenerateArg(Args, OPT_ffp_contract, "fast", SA); 3581 else if (Opts.DefaultFPContractMode == LangOptions::FPM_On) 3582 GenerateArg(Args, OPT_ffp_contract, "on", SA); 3583 else if (Opts.DefaultFPContractMode == LangOptions::FPM_Off) 3584 GenerateArg(Args, OPT_ffp_contract, "off", SA); 3585 else if (Opts.DefaultFPContractMode == LangOptions::FPM_FastHonorPragmas) 3586 GenerateArg(Args, OPT_ffp_contract, "fast-honor-pragmas", SA); 3587 3588 for (StringRef Sanitizer : serializeSanitizerKinds(Opts.Sanitize)) 3589 GenerateArg(Args, OPT_fsanitize_EQ, Sanitizer, SA); 3590 3591 // Conflating '-fsanitize-system-blacklist' and '-fsanitize-blacklist'. 3592 for (const std::string &F : Opts.SanitizerBlacklistFiles) 3593 GenerateArg(Args, OPT_fsanitize_blacklist, F, SA); 3594 3595 if (Opts.getClangABICompat() == LangOptions::ClangABI::Ver3_8) 3596 GenerateArg(Args, OPT_fclang_abi_compat_EQ, "3.8", SA); 3597 else if (Opts.getClangABICompat() == LangOptions::ClangABI::Ver4) 3598 GenerateArg(Args, OPT_fclang_abi_compat_EQ, "4.0", SA); 3599 else if (Opts.getClangABICompat() == LangOptions::ClangABI::Ver6) 3600 GenerateArg(Args, OPT_fclang_abi_compat_EQ, "6.0", SA); 3601 else if (Opts.getClangABICompat() == LangOptions::ClangABI::Ver7) 3602 GenerateArg(Args, OPT_fclang_abi_compat_EQ, "7.0", SA); 3603 else if (Opts.getClangABICompat() == LangOptions::ClangABI::Ver9) 3604 GenerateArg(Args, OPT_fclang_abi_compat_EQ, "9.0", SA); 3605 else if (Opts.getClangABICompat() == LangOptions::ClangABI::Ver11) 3606 GenerateArg(Args, OPT_fclang_abi_compat_EQ, "11.0", SA); 3607 3608 if (Opts.getSignReturnAddressScope() == 3609 LangOptions::SignReturnAddressScopeKind::All) 3610 GenerateArg(Args, OPT_msign_return_address_EQ, "all", SA); 3611 else if (Opts.getSignReturnAddressScope() == 3612 LangOptions::SignReturnAddressScopeKind::NonLeaf) 3613 GenerateArg(Args, OPT_msign_return_address_EQ, "non-leaf", SA); 3614 3615 if (Opts.getSignReturnAddressKey() == 3616 LangOptions::SignReturnAddressKeyKind::BKey) 3617 GenerateArg(Args, OPT_msign_return_address_key_EQ, "b_key", SA); 3618 } 3619 3620 bool CompilerInvocation::ParseLangArgsImpl(LangOptions &Opts, ArgList &Args, 3621 InputKind IK, const llvm::Triple &T, 3622 std::vector<std::string> &Includes, 3623 DiagnosticsEngine &Diags) { 3624 unsigned NumErrorsBefore = Diags.getNumErrors(); 3625 3626 // FIXME: Cleanup per-file based stuff. 3627 LangStandard::Kind LangStd = LangStandard::lang_unspecified; 3628 if (const Arg *A = Args.getLastArg(OPT_std_EQ)) { 3629 LangStd = LangStandard::getLangKind(A->getValue()); 3630 if (LangStd == LangStandard::lang_unspecified) { 3631 Diags.Report(diag::err_drv_invalid_value) 3632 << A->getAsString(Args) << A->getValue(); 3633 // Report supported standards with short description. 3634 for (unsigned KindValue = 0; 3635 KindValue != LangStandard::lang_unspecified; 3636 ++KindValue) { 3637 const LangStandard &Std = LangStandard::getLangStandardForKind( 3638 static_cast<LangStandard::Kind>(KindValue)); 3639 if (IsInputCompatibleWithStandard(IK, Std)) { 3640 auto Diag = Diags.Report(diag::note_drv_use_standard); 3641 Diag << Std.getName() << Std.getDescription(); 3642 unsigned NumAliases = 0; 3643 #define LANGSTANDARD(id, name, lang, desc, features) 3644 #define LANGSTANDARD_ALIAS(id, alias) \ 3645 if (KindValue == LangStandard::lang_##id) ++NumAliases; 3646 #define LANGSTANDARD_ALIAS_DEPR(id, alias) 3647 #include "clang/Basic/LangStandards.def" 3648 Diag << NumAliases; 3649 #define LANGSTANDARD(id, name, lang, desc, features) 3650 #define LANGSTANDARD_ALIAS(id, alias) \ 3651 if (KindValue == LangStandard::lang_##id) Diag << alias; 3652 #define LANGSTANDARD_ALIAS_DEPR(id, alias) 3653 #include "clang/Basic/LangStandards.def" 3654 } 3655 } 3656 } else { 3657 // Valid standard, check to make sure language and standard are 3658 // compatible. 3659 const LangStandard &Std = LangStandard::getLangStandardForKind(LangStd); 3660 if (!IsInputCompatibleWithStandard(IK, Std)) { 3661 Diags.Report(diag::err_drv_argument_not_allowed_with) 3662 << A->getAsString(Args) << GetInputKindName(IK); 3663 } 3664 } 3665 } 3666 3667 // -cl-std only applies for OpenCL language standards. 3668 // Override the -std option in this case. 3669 if (const Arg *A = Args.getLastArg(OPT_cl_std_EQ)) { 3670 LangStandard::Kind OpenCLLangStd 3671 = llvm::StringSwitch<LangStandard::Kind>(A->getValue()) 3672 .Cases("cl", "CL", LangStandard::lang_opencl10) 3673 .Cases("cl1.0", "CL1.0", LangStandard::lang_opencl10) 3674 .Cases("cl1.1", "CL1.1", LangStandard::lang_opencl11) 3675 .Cases("cl1.2", "CL1.2", LangStandard::lang_opencl12) 3676 .Cases("cl2.0", "CL2.0", LangStandard::lang_opencl20) 3677 .Cases("cl3.0", "CL3.0", LangStandard::lang_opencl30) 3678 .Cases("clc++", "CLC++", LangStandard::lang_openclcpp) 3679 .Default(LangStandard::lang_unspecified); 3680 3681 if (OpenCLLangStd == LangStandard::lang_unspecified) { 3682 Diags.Report(diag::err_drv_invalid_value) 3683 << A->getAsString(Args) << A->getValue(); 3684 } 3685 else 3686 LangStd = OpenCLLangStd; 3687 } 3688 3689 // These need to be parsed now. They are used to set OpenCL defaults. 3690 Opts.IncludeDefaultHeader = Args.hasArg(OPT_finclude_default_header); 3691 Opts.DeclareOpenCLBuiltins = Args.hasArg(OPT_fdeclare_opencl_builtins); 3692 3693 CompilerInvocation::setLangDefaults(Opts, IK, T, Includes, LangStd); 3694 3695 // The key paths of codegen options defined in Options.td start with 3696 // "LangOpts->". Let's provide the expected variable name and type. 3697 LangOptions *LangOpts = &Opts; 3698 bool Success = true; 3699 3700 #define LANG_OPTION_WITH_MARSHALLING( \ 3701 PREFIX_TYPE, NAME, ID, KIND, GROUP, ALIAS, ALIASARGS, FLAGS, PARAM, \ 3702 HELPTEXT, METAVAR, VALUES, SPELLING, SHOULD_PARSE, ALWAYS_EMIT, KEYPATH, \ 3703 DEFAULT_VALUE, IMPLIED_CHECK, IMPLIED_VALUE, NORMALIZER, DENORMALIZER, \ 3704 MERGER, EXTRACTOR, TABLE_INDEX) \ 3705 PARSE_OPTION_WITH_MARSHALLING(Args, Diags, Success, ID, FLAGS, PARAM, \ 3706 SHOULD_PARSE, KEYPATH, DEFAULT_VALUE, \ 3707 IMPLIED_CHECK, IMPLIED_VALUE, NORMALIZER, \ 3708 MERGER, TABLE_INDEX) 3709 #include "clang/Driver/Options.inc" 3710 #undef LANG_OPTION_WITH_MARSHALLING 3711 3712 if (const Arg *A = Args.getLastArg(OPT_fcf_protection_EQ)) { 3713 StringRef Name = A->getValue(); 3714 if (Name == "full" || Name == "branch") { 3715 Opts.CFProtectionBranch = 1; 3716 } 3717 } 3718 3719 3720 if (auto *A = Args.getLastArg(OPT_cuid_EQ)) { 3721 Opts.CUID = std::string(A->getValue()); 3722 } 3723 3724 if (Opts.ObjC) { 3725 if (Arg *arg = Args.getLastArg(OPT_fobjc_runtime_EQ)) { 3726 StringRef value = arg->getValue(); 3727 if (Opts.ObjCRuntime.tryParse(value)) 3728 Diags.Report(diag::err_drv_unknown_objc_runtime) << value; 3729 } 3730 3731 if (Args.hasArg(OPT_fobjc_gc_only)) 3732 Opts.setGC(LangOptions::GCOnly); 3733 else if (Args.hasArg(OPT_fobjc_gc)) 3734 Opts.setGC(LangOptions::HybridGC); 3735 else if (Args.hasArg(OPT_fobjc_arc)) { 3736 Opts.ObjCAutoRefCount = 1; 3737 if (!Opts.ObjCRuntime.allowsARC()) 3738 Diags.Report(diag::err_arc_unsupported_on_runtime); 3739 } 3740 3741 // ObjCWeakRuntime tracks whether the runtime supports __weak, not 3742 // whether the feature is actually enabled. This is predominantly 3743 // determined by -fobjc-runtime, but we allow it to be overridden 3744 // from the command line for testing purposes. 3745 if (Args.hasArg(OPT_fobjc_runtime_has_weak)) 3746 Opts.ObjCWeakRuntime = 1; 3747 else 3748 Opts.ObjCWeakRuntime = Opts.ObjCRuntime.allowsWeak(); 3749 3750 // ObjCWeak determines whether __weak is actually enabled. 3751 // Note that we allow -fno-objc-weak to disable this even in ARC mode. 3752 if (auto weakArg = Args.getLastArg(OPT_fobjc_weak, OPT_fno_objc_weak)) { 3753 if (!weakArg->getOption().matches(OPT_fobjc_weak)) { 3754 assert(!Opts.ObjCWeak); 3755 } else if (Opts.getGC() != LangOptions::NonGC) { 3756 Diags.Report(diag::err_objc_weak_with_gc); 3757 } else if (!Opts.ObjCWeakRuntime) { 3758 Diags.Report(diag::err_objc_weak_unsupported); 3759 } else { 3760 Opts.ObjCWeak = 1; 3761 } 3762 } else if (Opts.ObjCAutoRefCount) { 3763 Opts.ObjCWeak = Opts.ObjCWeakRuntime; 3764 } 3765 3766 if (Args.hasArg(OPT_fobjc_subscripting_legacy_runtime)) 3767 Opts.ObjCSubscriptingLegacyRuntime = 3768 (Opts.ObjCRuntime.getKind() == ObjCRuntime::FragileMacOSX); 3769 } 3770 3771 if (Arg *A = Args.getLastArg(options::OPT_fgnuc_version_EQ)) { 3772 // Check that the version has 1 to 3 components and the minor and patch 3773 // versions fit in two decimal digits. 3774 VersionTuple GNUCVer; 3775 bool Invalid = GNUCVer.tryParse(A->getValue()); 3776 unsigned Major = GNUCVer.getMajor(); 3777 unsigned Minor = GNUCVer.getMinor().getValueOr(0); 3778 unsigned Patch = GNUCVer.getSubminor().getValueOr(0); 3779 if (Invalid || GNUCVer.getBuild() || Minor >= 100 || Patch >= 100) { 3780 Diags.Report(diag::err_drv_invalid_value) 3781 << A->getAsString(Args) << A->getValue(); 3782 } 3783 Opts.GNUCVersion = Major * 100 * 100 + Minor * 100 + Patch; 3784 } 3785 3786 if (Args.hasArg(OPT_ftrapv)) { 3787 Opts.setSignedOverflowBehavior(LangOptions::SOB_Trapping); 3788 // Set the handler, if one is specified. 3789 Opts.OverflowHandler = 3790 std::string(Args.getLastArgValue(OPT_ftrapv_handler)); 3791 } 3792 else if (Args.hasArg(OPT_fwrapv)) 3793 Opts.setSignedOverflowBehavior(LangOptions::SOB_Defined); 3794 3795 Opts.MSCompatibilityVersion = 0; 3796 if (const Arg *A = Args.getLastArg(OPT_fms_compatibility_version)) { 3797 VersionTuple VT; 3798 if (VT.tryParse(A->getValue())) 3799 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) 3800 << A->getValue(); 3801 Opts.MSCompatibilityVersion = VT.getMajor() * 10000000 + 3802 VT.getMinor().getValueOr(0) * 100000 + 3803 VT.getSubminor().getValueOr(0); 3804 } 3805 3806 // Mimicking gcc's behavior, trigraphs are only enabled if -trigraphs 3807 // is specified, or -std is set to a conforming mode. 3808 // Trigraphs are disabled by default in c++1z onwards. 3809 // For z/OS, trigraphs are enabled by default (without regard to the above). 3810 Opts.Trigraphs = 3811 (!Opts.GNUMode && !Opts.MSVCCompat && !Opts.CPlusPlus17) || T.isOSzOS(); 3812 Opts.Trigraphs = 3813 Args.hasFlag(OPT_ftrigraphs, OPT_fno_trigraphs, Opts.Trigraphs); 3814 3815 Opts.Blocks = Args.hasArg(OPT_fblocks) || (Opts.OpenCL 3816 && Opts.OpenCLVersion == 200); 3817 3818 Opts.ConvergentFunctions = Opts.OpenCL || (Opts.CUDA && Opts.CUDAIsDevice) || 3819 Opts.SYCLIsDevice || 3820 Args.hasArg(OPT_fconvergent_functions); 3821 3822 Opts.NoBuiltin = Args.hasArg(OPT_fno_builtin) || Opts.Freestanding; 3823 if (!Opts.NoBuiltin) 3824 getAllNoBuiltinFuncValues(Args, Opts.NoBuiltinFuncs); 3825 Opts.LongDoubleSize = Args.hasArg(OPT_mlong_double_128) 3826 ? 128 3827 : Args.hasArg(OPT_mlong_double_64) ? 64 : 0; 3828 if (Opts.FastRelaxedMath) 3829 Opts.setDefaultFPContractMode(LangOptions::FPM_Fast); 3830 llvm::sort(Opts.ModuleFeatures); 3831 3832 // -mrtd option 3833 if (Arg *A = Args.getLastArg(OPT_mrtd)) { 3834 if (Opts.getDefaultCallingConv() != LangOptions::DCC_None) 3835 Diags.Report(diag::err_drv_argument_not_allowed_with) 3836 << A->getSpelling() << "-fdefault-calling-conv"; 3837 else { 3838 if (T.getArch() != llvm::Triple::x86) 3839 Diags.Report(diag::err_drv_argument_not_allowed_with) 3840 << A->getSpelling() << T.getTriple(); 3841 else 3842 Opts.setDefaultCallingConv(LangOptions::DCC_StdCall); 3843 } 3844 } 3845 3846 // Check if -fopenmp is specified and set default version to 5.0. 3847 Opts.OpenMP = Args.hasArg(OPT_fopenmp) ? 50 : 0; 3848 // Check if -fopenmp-simd is specified. 3849 bool IsSimdSpecified = 3850 Args.hasFlag(options::OPT_fopenmp_simd, options::OPT_fno_openmp_simd, 3851 /*Default=*/false); 3852 Opts.OpenMPSimd = !Opts.OpenMP && IsSimdSpecified; 3853 Opts.OpenMPUseTLS = 3854 Opts.OpenMP && !Args.hasArg(options::OPT_fnoopenmp_use_tls); 3855 Opts.OpenMPIsDevice = 3856 Opts.OpenMP && Args.hasArg(options::OPT_fopenmp_is_device); 3857 Opts.OpenMPIRBuilder = 3858 Opts.OpenMP && Args.hasArg(options::OPT_fopenmp_enable_irbuilder); 3859 bool IsTargetSpecified = 3860 Opts.OpenMPIsDevice || Args.hasArg(options::OPT_fopenmp_targets_EQ); 3861 3862 Opts.ConvergentFunctions = Opts.ConvergentFunctions || Opts.OpenMPIsDevice; 3863 3864 if (Opts.OpenMP || Opts.OpenMPSimd) { 3865 if (int Version = getLastArgIntValue( 3866 Args, OPT_fopenmp_version_EQ, 3867 (IsSimdSpecified || IsTargetSpecified) ? 50 : Opts.OpenMP, Diags)) 3868 Opts.OpenMP = Version; 3869 // Provide diagnostic when a given target is not expected to be an OpenMP 3870 // device or host. 3871 if (!Opts.OpenMPIsDevice) { 3872 switch (T.getArch()) { 3873 default: 3874 break; 3875 // Add unsupported host targets here: 3876 case llvm::Triple::nvptx: 3877 case llvm::Triple::nvptx64: 3878 Diags.Report(diag::err_drv_omp_host_target_not_supported) << T.str(); 3879 break; 3880 } 3881 } 3882 } 3883 3884 // Set the flag to prevent the implementation from emitting device exception 3885 // handling code for those requiring so. 3886 if ((Opts.OpenMPIsDevice && (T.isNVPTX() || T.isAMDGCN())) || 3887 Opts.OpenCLCPlusPlus) { 3888 Opts.Exceptions = 0; 3889 Opts.CXXExceptions = 0; 3890 } 3891 if (Opts.OpenMPIsDevice && T.isNVPTX()) { 3892 Opts.OpenMPCUDANumSMs = 3893 getLastArgIntValue(Args, options::OPT_fopenmp_cuda_number_of_sm_EQ, 3894 Opts.OpenMPCUDANumSMs, Diags); 3895 Opts.OpenMPCUDABlocksPerSM = 3896 getLastArgIntValue(Args, options::OPT_fopenmp_cuda_blocks_per_sm_EQ, 3897 Opts.OpenMPCUDABlocksPerSM, Diags); 3898 Opts.OpenMPCUDAReductionBufNum = getLastArgIntValue( 3899 Args, options::OPT_fopenmp_cuda_teams_reduction_recs_num_EQ, 3900 Opts.OpenMPCUDAReductionBufNum, Diags); 3901 } 3902 3903 // Get the OpenMP target triples if any. 3904 if (Arg *A = Args.getLastArg(options::OPT_fopenmp_targets_EQ)) { 3905 enum ArchPtrSize { Arch16Bit, Arch32Bit, Arch64Bit }; 3906 auto getArchPtrSize = [](const llvm::Triple &T) { 3907 if (T.isArch16Bit()) 3908 return Arch16Bit; 3909 if (T.isArch32Bit()) 3910 return Arch32Bit; 3911 assert(T.isArch64Bit() && "Expected 64-bit architecture"); 3912 return Arch64Bit; 3913 }; 3914 3915 for (unsigned i = 0; i < A->getNumValues(); ++i) { 3916 llvm::Triple TT(A->getValue(i)); 3917 3918 if (TT.getArch() == llvm::Triple::UnknownArch || 3919 !(TT.getArch() == llvm::Triple::aarch64 || TT.isPPC() || 3920 TT.getArch() == llvm::Triple::nvptx || 3921 TT.getArch() == llvm::Triple::nvptx64 || 3922 TT.getArch() == llvm::Triple::amdgcn || 3923 TT.getArch() == llvm::Triple::x86 || 3924 TT.getArch() == llvm::Triple::x86_64)) 3925 Diags.Report(diag::err_drv_invalid_omp_target) << A->getValue(i); 3926 else if (getArchPtrSize(T) != getArchPtrSize(TT)) 3927 Diags.Report(diag::err_drv_incompatible_omp_arch) 3928 << A->getValue(i) << T.str(); 3929 else 3930 Opts.OMPTargetTriples.push_back(TT); 3931 } 3932 } 3933 3934 // Get OpenMP host file path if any and report if a non existent file is 3935 // found 3936 if (Arg *A = Args.getLastArg(options::OPT_fopenmp_host_ir_file_path)) { 3937 Opts.OMPHostIRFile = A->getValue(); 3938 if (!llvm::sys::fs::exists(Opts.OMPHostIRFile)) 3939 Diags.Report(diag::err_drv_omp_host_ir_file_not_found) 3940 << Opts.OMPHostIRFile; 3941 } 3942 3943 // Set CUDA mode for OpenMP target NVPTX/AMDGCN if specified in options 3944 Opts.OpenMPCUDAMode = Opts.OpenMPIsDevice && (T.isNVPTX() || T.isAMDGCN()) && 3945 Args.hasArg(options::OPT_fopenmp_cuda_mode); 3946 3947 // Set CUDA support for parallel execution of target regions for OpenMP target 3948 // NVPTX/AMDGCN if specified in options. 3949 Opts.OpenMPCUDATargetParallel = 3950 Opts.OpenMPIsDevice && (T.isNVPTX() || T.isAMDGCN()) && 3951 Args.hasArg(options::OPT_fopenmp_cuda_parallel_target_regions); 3952 3953 // Set CUDA mode for OpenMP target NVPTX/AMDGCN if specified in options 3954 Opts.OpenMPCUDAForceFullRuntime = 3955 Opts.OpenMPIsDevice && (T.isNVPTX() || T.isAMDGCN()) && 3956 Args.hasArg(options::OPT_fopenmp_cuda_force_full_runtime); 3957 3958 // FIXME: Eliminate this dependency. 3959 unsigned Opt = getOptimizationLevel(Args, IK, Diags), 3960 OptSize = getOptimizationLevelSize(Args); 3961 Opts.Optimize = Opt != 0; 3962 Opts.OptimizeSize = OptSize != 0; 3963 3964 // This is the __NO_INLINE__ define, which just depends on things like the 3965 // optimization level and -fno-inline, not actually whether the backend has 3966 // inlining enabled. 3967 Opts.NoInlineDefine = !Opts.Optimize; 3968 if (Arg *InlineArg = Args.getLastArg( 3969 options::OPT_finline_functions, options::OPT_finline_hint_functions, 3970 options::OPT_fno_inline_functions, options::OPT_fno_inline)) 3971 if (InlineArg->getOption().matches(options::OPT_fno_inline)) 3972 Opts.NoInlineDefine = true; 3973 3974 if (Arg *A = Args.getLastArg(OPT_ffp_contract)) { 3975 StringRef Val = A->getValue(); 3976 if (Val == "fast") 3977 Opts.setDefaultFPContractMode(LangOptions::FPM_Fast); 3978 else if (Val == "on") 3979 Opts.setDefaultFPContractMode(LangOptions::FPM_On); 3980 else if (Val == "off") 3981 Opts.setDefaultFPContractMode(LangOptions::FPM_Off); 3982 else if (Val == "fast-honor-pragmas") 3983 Opts.setDefaultFPContractMode(LangOptions::FPM_FastHonorPragmas); 3984 else 3985 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Val; 3986 } 3987 3988 // Parse -fsanitize= arguments. 3989 parseSanitizerKinds("-fsanitize=", Args.getAllArgValues(OPT_fsanitize_EQ), 3990 Diags, Opts.Sanitize); 3991 Opts.SanitizerBlacklistFiles = Args.getAllArgValues(OPT_fsanitize_blacklist); 3992 std::vector<std::string> systemBlacklists = 3993 Args.getAllArgValues(OPT_fsanitize_system_blacklist); 3994 Opts.SanitizerBlacklistFiles.insert(Opts.SanitizerBlacklistFiles.end(), 3995 systemBlacklists.begin(), 3996 systemBlacklists.end()); 3997 3998 if (Arg *A = Args.getLastArg(OPT_fclang_abi_compat_EQ)) { 3999 Opts.setClangABICompat(LangOptions::ClangABI::Latest); 4000 4001 StringRef Ver = A->getValue(); 4002 std::pair<StringRef, StringRef> VerParts = Ver.split('.'); 4003 unsigned Major, Minor = 0; 4004 4005 // Check the version number is valid: either 3.x (0 <= x <= 9) or 4006 // y or y.0 (4 <= y <= current version). 4007 if (!VerParts.first.startswith("0") && 4008 !VerParts.first.getAsInteger(10, Major) && 4009 3 <= Major && Major <= CLANG_VERSION_MAJOR && 4010 (Major == 3 ? VerParts.second.size() == 1 && 4011 !VerParts.second.getAsInteger(10, Minor) 4012 : VerParts.first.size() == Ver.size() || 4013 VerParts.second == "0")) { 4014 // Got a valid version number. 4015 if (Major == 3 && Minor <= 8) 4016 Opts.setClangABICompat(LangOptions::ClangABI::Ver3_8); 4017 else if (Major <= 4) 4018 Opts.setClangABICompat(LangOptions::ClangABI::Ver4); 4019 else if (Major <= 6) 4020 Opts.setClangABICompat(LangOptions::ClangABI::Ver6); 4021 else if (Major <= 7) 4022 Opts.setClangABICompat(LangOptions::ClangABI::Ver7); 4023 else if (Major <= 9) 4024 Opts.setClangABICompat(LangOptions::ClangABI::Ver9); 4025 else if (Major <= 11) 4026 Opts.setClangABICompat(LangOptions::ClangABI::Ver11); 4027 } else if (Ver != "latest") { 4028 Diags.Report(diag::err_drv_invalid_value) 4029 << A->getAsString(Args) << A->getValue(); 4030 } 4031 } 4032 4033 if (Arg *A = Args.getLastArg(OPT_msign_return_address_EQ)) { 4034 StringRef SignScope = A->getValue(); 4035 4036 if (SignScope.equals_lower("none")) 4037 Opts.setSignReturnAddressScope( 4038 LangOptions::SignReturnAddressScopeKind::None); 4039 else if (SignScope.equals_lower("all")) 4040 Opts.setSignReturnAddressScope( 4041 LangOptions::SignReturnAddressScopeKind::All); 4042 else if (SignScope.equals_lower("non-leaf")) 4043 Opts.setSignReturnAddressScope( 4044 LangOptions::SignReturnAddressScopeKind::NonLeaf); 4045 else 4046 Diags.Report(diag::err_drv_invalid_value) 4047 << A->getAsString(Args) << SignScope; 4048 4049 if (Arg *A = Args.getLastArg(OPT_msign_return_address_key_EQ)) { 4050 StringRef SignKey = A->getValue(); 4051 if (!SignScope.empty() && !SignKey.empty()) { 4052 if (SignKey.equals_lower("a_key")) 4053 Opts.setSignReturnAddressKey( 4054 LangOptions::SignReturnAddressKeyKind::AKey); 4055 else if (SignKey.equals_lower("b_key")) 4056 Opts.setSignReturnAddressKey( 4057 LangOptions::SignReturnAddressKeyKind::BKey); 4058 else 4059 Diags.Report(diag::err_drv_invalid_value) 4060 << A->getAsString(Args) << SignKey; 4061 } 4062 } 4063 } 4064 4065 return Success && Diags.getNumErrors() == NumErrorsBefore; 4066 } 4067 4068 bool CompilerInvocation::ParseLangArgs(CompilerInvocation &Res, 4069 LangOptions &Opts, 4070 llvm::opt::ArgList &Args, InputKind IK, 4071 const llvm::Triple &T, 4072 std::vector<std::string> &Includes, 4073 DiagnosticsEngine &Diags) { 4074 auto DummyOpts = std::make_shared<LangOptions>(); 4075 4076 // We need to work around inconsistencies related to optimization flags. Their 4077 // primary consumer is CodeGenOptions. However, the LangOptions parser also 4078 // queries them, which means RoundTrip expects us to generate them. We don't 4079 // want to do it in GenerateLangArgs, because it should eventually be the 4080 // responsibility of GenerateCodeGenArgs. Until we start doing one big 4081 // round-trip, let's do it here. 4082 // 4083 // Our parser always queries OPT_O_Group. When given -O1, -O2 or -O3, it also 4084 // queries OPT_O. To ensure RoundTrip consistently considers us responsible 4085 // for generating all of them, we ensure to proactively query them all. 4086 4087 return RoundTrip( 4088 [IK, &T, &Includes](CompilerInvocation &Res, ArgList &Args, 4089 DiagnosticsEngine &Diags) { 4090 // Proactively query all optimization flags. 4091 Args.getLastArg(OPT_O0, OPT_O4, OPT_O, OPT_Ofast); 4092 return ParseLangArgsImpl(*Res.getLangOpts(), Args, IK, T, Includes, 4093 Diags); 4094 }, 4095 [&T, &Args](CompilerInvocation &Res, 4096 SmallVectorImpl<const char *> &GenArgs, StringAllocator SA) { 4097 GenerateLangArgs(*Res.getLangOpts(), GenArgs, SA, T); 4098 // Generate all optimization flags we queried. 4099 if (Arg *A = Args.getLastArg(OPT_O_Group)) { 4100 OptSpecifier Opt = A->getOption().getID(); 4101 4102 if (A->getNumValues() > 0) 4103 GenerateArg(GenArgs, Opt, A->getValues().back(), SA); 4104 else 4105 GenerateArg(GenArgs, Opt, SA); 4106 } 4107 4108 // We also queried -fcf-protection, but don't have enough information to 4109 // generate it. Eventually, it will be generated from CodeGenOptions. 4110 if (const Arg *A = Args.getLastArg(OPT_fcf_protection_EQ)) 4111 GenerateArg(GenArgs, OPT_fcf_protection_EQ, A->getValue(), SA); 4112 }, 4113 [&DummyOpts](CompilerInvocation &Res) { Res.LangOpts.swap(DummyOpts); }, 4114 Res, Args, Diags, "LangOptions"); 4115 } 4116 4117 static bool isStrictlyPreprocessorAction(frontend::ActionKind Action) { 4118 switch (Action) { 4119 case frontend::ASTDeclList: 4120 case frontend::ASTDump: 4121 case frontend::ASTPrint: 4122 case frontend::ASTView: 4123 case frontend::EmitAssembly: 4124 case frontend::EmitBC: 4125 case frontend::EmitHTML: 4126 case frontend::EmitLLVM: 4127 case frontend::EmitLLVMOnly: 4128 case frontend::EmitCodeGenOnly: 4129 case frontend::EmitObj: 4130 case frontend::FixIt: 4131 case frontend::GenerateModule: 4132 case frontend::GenerateModuleInterface: 4133 case frontend::GenerateHeaderModule: 4134 case frontend::GeneratePCH: 4135 case frontend::GenerateInterfaceStubs: 4136 case frontend::ParseSyntaxOnly: 4137 case frontend::ModuleFileInfo: 4138 case frontend::VerifyPCH: 4139 case frontend::PluginAction: 4140 case frontend::RewriteObjC: 4141 case frontend::RewriteTest: 4142 case frontend::RunAnalysis: 4143 case frontend::TemplightDump: 4144 case frontend::MigrateSource: 4145 return false; 4146 4147 case frontend::DumpCompilerOptions: 4148 case frontend::DumpRawTokens: 4149 case frontend::DumpTokens: 4150 case frontend::InitOnly: 4151 case frontend::PrintPreamble: 4152 case frontend::PrintPreprocessedInput: 4153 case frontend::RewriteMacros: 4154 case frontend::RunPreprocessorOnly: 4155 case frontend::PrintDependencyDirectivesSourceMinimizerOutput: 4156 return true; 4157 } 4158 llvm_unreachable("invalid frontend action"); 4159 } 4160 4161 static void GeneratePreprocessorArgs(PreprocessorOptions &Opts, 4162 SmallVectorImpl<const char *> &Args, 4163 CompilerInvocation::StringAllocator SA, 4164 const LangOptions &LangOpts, 4165 const FrontendOptions &FrontendOpts, 4166 const CodeGenOptions &CodeGenOpts) { 4167 PreprocessorOptions *PreprocessorOpts = &Opts; 4168 4169 #define PREPROCESSOR_OPTION_WITH_MARSHALLING( \ 4170 PREFIX_TYPE, NAME, ID, KIND, GROUP, ALIAS, ALIASARGS, FLAGS, PARAM, \ 4171 HELPTEXT, METAVAR, VALUES, SPELLING, SHOULD_PARSE, ALWAYS_EMIT, KEYPATH, \ 4172 DEFAULT_VALUE, IMPLIED_CHECK, IMPLIED_VALUE, NORMALIZER, DENORMALIZER, \ 4173 MERGER, EXTRACTOR, TABLE_INDEX) \ 4174 GENERATE_OPTION_WITH_MARSHALLING( \ 4175 Args, SA, KIND, FLAGS, SPELLING, ALWAYS_EMIT, KEYPATH, DEFAULT_VALUE, \ 4176 IMPLIED_CHECK, IMPLIED_VALUE, DENORMALIZER, EXTRACTOR, TABLE_INDEX) 4177 #include "clang/Driver/Options.inc" 4178 #undef PREPROCESSOR_OPTION_WITH_MARSHALLING 4179 4180 if (Opts.PCHWithHdrStop && !Opts.PCHWithHdrStopCreate) 4181 GenerateArg(Args, OPT_pch_through_hdrstop_use, SA); 4182 4183 for (const auto &D : Opts.DeserializedPCHDeclsToErrorOn) 4184 GenerateArg(Args, OPT_error_on_deserialized_pch_decl, D, SA); 4185 4186 for (const auto &MP : Opts.MacroPrefixMap) 4187 GenerateArg(Args, OPT_fmacro_prefix_map_EQ, MP.first + "=" + MP.second, SA); 4188 4189 if (Opts.PrecompiledPreambleBytes != std::make_pair(0u, false)) 4190 GenerateArg(Args, OPT_preamble_bytes_EQ, 4191 Twine(Opts.PrecompiledPreambleBytes.first) + "," + 4192 (Opts.PrecompiledPreambleBytes.second ? "1" : "0"), 4193 SA); 4194 4195 for (const auto &M : Opts.Macros) { 4196 // Don't generate __CET__ macro definitions. They are implied by the 4197 // -fcf-protection option that is generated elsewhere. 4198 if (M.first == "__CET__=1" && !M.second && 4199 !CodeGenOpts.CFProtectionReturn && CodeGenOpts.CFProtectionBranch) 4200 continue; 4201 if (M.first == "__CET__=2" && !M.second && CodeGenOpts.CFProtectionReturn && 4202 !CodeGenOpts.CFProtectionBranch) 4203 continue; 4204 if (M.first == "__CET__=3" && !M.second && CodeGenOpts.CFProtectionReturn && 4205 CodeGenOpts.CFProtectionBranch) 4206 continue; 4207 4208 GenerateArg(Args, M.second ? OPT_U : OPT_D, M.first, SA); 4209 } 4210 4211 for (const auto &I : Opts.Includes) { 4212 // Don't generate OpenCL includes. They are implied by other flags that are 4213 // generated elsewhere. 4214 if (LangOpts.OpenCL && LangOpts.IncludeDefaultHeader && 4215 ((LangOpts.DeclareOpenCLBuiltins && I == "opencl-c-base.h") || 4216 I == "opencl-c.h")) 4217 continue; 4218 4219 GenerateArg(Args, OPT_include, I, SA); 4220 } 4221 4222 for (const auto &CI : Opts.ChainedIncludes) 4223 GenerateArg(Args, OPT_chain_include, CI, SA); 4224 4225 for (const auto &RF : Opts.RemappedFiles) 4226 GenerateArg(Args, OPT_remap_file, RF.first + ";" + RF.second, SA); 4227 4228 // Don't handle LexEditorPlaceholders. It is implied by the action that is 4229 // generated elsewhere. 4230 } 4231 4232 static bool ParsePreprocessorArgsImpl(PreprocessorOptions &Opts, ArgList &Args, 4233 DiagnosticsEngine &Diags, 4234 frontend::ActionKind Action, 4235 const FrontendOptions &FrontendOpts) { 4236 PreprocessorOptions *PreprocessorOpts = &Opts; 4237 bool Success = true; 4238 4239 #define PREPROCESSOR_OPTION_WITH_MARSHALLING( \ 4240 PREFIX_TYPE, NAME, ID, KIND, GROUP, ALIAS, ALIASARGS, FLAGS, PARAM, \ 4241 HELPTEXT, METAVAR, VALUES, SPELLING, SHOULD_PARSE, ALWAYS_EMIT, KEYPATH, \ 4242 DEFAULT_VALUE, IMPLIED_CHECK, IMPLIED_VALUE, NORMALIZER, DENORMALIZER, \ 4243 MERGER, EXTRACTOR, TABLE_INDEX) \ 4244 PARSE_OPTION_WITH_MARSHALLING(Args, Diags, Success, ID, FLAGS, PARAM, \ 4245 SHOULD_PARSE, KEYPATH, DEFAULT_VALUE, \ 4246 IMPLIED_CHECK, IMPLIED_VALUE, NORMALIZER, \ 4247 MERGER, TABLE_INDEX) 4248 #include "clang/Driver/Options.inc" 4249 #undef PREPROCESSOR_OPTION_WITH_MARSHALLING 4250 4251 Opts.PCHWithHdrStop = Args.hasArg(OPT_pch_through_hdrstop_create) || 4252 Args.hasArg(OPT_pch_through_hdrstop_use); 4253 4254 for (const auto *A : Args.filtered(OPT_error_on_deserialized_pch_decl)) 4255 Opts.DeserializedPCHDeclsToErrorOn.insert(A->getValue()); 4256 4257 for (const auto &A : Args.getAllArgValues(OPT_fmacro_prefix_map_EQ)) { 4258 auto Split = StringRef(A).split('='); 4259 Opts.MacroPrefixMap.insert( 4260 {std::string(Split.first), std::string(Split.second)}); 4261 } 4262 4263 if (const Arg *A = Args.getLastArg(OPT_preamble_bytes_EQ)) { 4264 StringRef Value(A->getValue()); 4265 size_t Comma = Value.find(','); 4266 unsigned Bytes = 0; 4267 unsigned EndOfLine = 0; 4268 4269 if (Comma == StringRef::npos || 4270 Value.substr(0, Comma).getAsInteger(10, Bytes) || 4271 Value.substr(Comma + 1).getAsInteger(10, EndOfLine)) 4272 Diags.Report(diag::err_drv_preamble_format); 4273 else { 4274 Opts.PrecompiledPreambleBytes.first = Bytes; 4275 Opts.PrecompiledPreambleBytes.second = (EndOfLine != 0); 4276 } 4277 } 4278 4279 // Add the __CET__ macro if a CFProtection option is set. 4280 if (const Arg *A = Args.getLastArg(OPT_fcf_protection_EQ)) { 4281 StringRef Name = A->getValue(); 4282 if (Name == "branch") 4283 Opts.addMacroDef("__CET__=1"); 4284 else if (Name == "return") 4285 Opts.addMacroDef("__CET__=2"); 4286 else if (Name == "full") 4287 Opts.addMacroDef("__CET__=3"); 4288 } 4289 4290 // Add macros from the command line. 4291 for (const auto *A : Args.filtered(OPT_D, OPT_U)) { 4292 if (A->getOption().matches(OPT_D)) 4293 Opts.addMacroDef(A->getValue()); 4294 else 4295 Opts.addMacroUndef(A->getValue()); 4296 } 4297 4298 // Add the ordered list of -includes. 4299 for (const auto *A : Args.filtered(OPT_include)) 4300 Opts.Includes.emplace_back(A->getValue()); 4301 4302 for (const auto *A : Args.filtered(OPT_chain_include)) 4303 Opts.ChainedIncludes.emplace_back(A->getValue()); 4304 4305 for (const auto *A : Args.filtered(OPT_remap_file)) { 4306 std::pair<StringRef, StringRef> Split = StringRef(A->getValue()).split(';'); 4307 4308 if (Split.second.empty()) { 4309 Diags.Report(diag::err_drv_invalid_remap_file) << A->getAsString(Args); 4310 continue; 4311 } 4312 4313 Opts.addRemappedFile(Split.first, Split.second); 4314 } 4315 4316 // Always avoid lexing editor placeholders when we're just running the 4317 // preprocessor as we never want to emit the 4318 // "editor placeholder in source file" error in PP only mode. 4319 if (isStrictlyPreprocessorAction(Action)) 4320 Opts.LexEditorPlaceholders = false; 4321 4322 return Success; 4323 } 4324 4325 static bool ParsePreprocessorArgs(CompilerInvocation &Res, 4326 PreprocessorOptions &Opts, ArgList &Args, 4327 DiagnosticsEngine &Diags, 4328 frontend::ActionKind Action, 4329 FrontendOptions &FrontendOpts) { 4330 auto DummyOpts = std::make_shared<PreprocessorOptions>(); 4331 4332 auto Parse = [Action](CompilerInvocation &Res, ArgList &Args, 4333 DiagnosticsEngine &Diags) { 4334 return ParsePreprocessorArgsImpl(Res.getPreprocessorOpts(), Args, Diags, 4335 Action, Res.getFrontendOpts()); 4336 }; 4337 4338 auto Generate = [&Args](CompilerInvocation &Res, 4339 SmallVectorImpl<const char *> &GeneratedArgs, 4340 CompilerInvocation::StringAllocator SA) { 4341 GeneratePreprocessorArgs(Res.getPreprocessorOpts(), GeneratedArgs, SA, 4342 *Res.getLangOpts(), Res.getFrontendOpts(), 4343 Res.getCodeGenOpts()); 4344 // The ParsePreprocessorArgs function queries the -fcf-protection option, 4345 // which means that it won't be directly copied during argument generation. 4346 // The GeneratePreprocessorArgs function isn't responsible for generating it 4347 // either. This would cause -fcf-protection to get forgotten during 4348 // round-trip and the __CET__ macros wouldn't get deduced during second call 4349 // to ParsePreprocessorArgs. Let's fix this by generating -fcf-protection 4350 // here. 4351 // TODO: Remove this once we're doing one big round-trip instead of many 4352 // small ones. 4353 if (const Arg *A = Args.getLastArg(OPT_fcf_protection_EQ)) 4354 GenerateArg(GeneratedArgs, OPT_fcf_protection_EQ, A->getValue(), SA); 4355 }; 4356 4357 auto Swap = [&DummyOpts](CompilerInvocation &Res) { 4358 std::swap(Res.PreprocessorOpts, DummyOpts); 4359 }; 4360 4361 return RoundTrip(Parse, Generate, Swap, Res, Args, Diags, 4362 "PreprocessorOptions"); 4363 } 4364 4365 static void GeneratePreprocessorOutputArgs( 4366 const PreprocessorOutputOptions &Opts, SmallVectorImpl<const char *> &Args, 4367 CompilerInvocation::StringAllocator SA, frontend::ActionKind Action) { 4368 const PreprocessorOutputOptions &PreprocessorOutputOpts = Opts; 4369 4370 #define PREPROCESSOR_OUTPUT_OPTION_WITH_MARSHALLING( \ 4371 PREFIX_TYPE, NAME, ID, KIND, GROUP, ALIAS, ALIASARGS, FLAGS, PARAM, \ 4372 HELPTEXT, METAVAR, VALUES, SPELLING, SHOULD_PARSE, ALWAYS_EMIT, KEYPATH, \ 4373 DEFAULT_VALUE, IMPLIED_CHECK, IMPLIED_VALUE, NORMALIZER, DENORMALIZER, \ 4374 MERGER, EXTRACTOR, TABLE_INDEX) \ 4375 GENERATE_OPTION_WITH_MARSHALLING( \ 4376 Args, SA, KIND, FLAGS, SPELLING, ALWAYS_EMIT, KEYPATH, DEFAULT_VALUE, \ 4377 IMPLIED_CHECK, IMPLIED_VALUE, DENORMALIZER, EXTRACTOR, TABLE_INDEX) 4378 #include "clang/Driver/Options.inc" 4379 #undef PREPROCESSOR_OUTPUT_OPTION_WITH_MARSHALLING 4380 4381 bool Generate_dM = isStrictlyPreprocessorAction(Action) && !Opts.ShowCPP; 4382 if (Generate_dM) 4383 GenerateArg(Args, OPT_dM, SA); 4384 if (!Generate_dM && Opts.ShowMacros) 4385 GenerateArg(Args, OPT_dD, SA); 4386 } 4387 4388 static bool ParsePreprocessorOutputArgsImpl(PreprocessorOutputOptions &Opts, 4389 ArgList &Args, 4390 DiagnosticsEngine &Diags, 4391 frontend::ActionKind Action) { 4392 PreprocessorOutputOptions &PreprocessorOutputOpts = Opts; 4393 unsigned NumErrorsBefore = Diags.getNumErrors(); 4394 bool Success = true; 4395 4396 #define PREPROCESSOR_OUTPUT_OPTION_WITH_MARSHALLING( \ 4397 PREFIX_TYPE, NAME, ID, KIND, GROUP, ALIAS, ALIASARGS, FLAGS, PARAM, \ 4398 HELPTEXT, METAVAR, VALUES, SPELLING, SHOULD_PARSE, ALWAYS_EMIT, KEYPATH, \ 4399 DEFAULT_VALUE, IMPLIED_CHECK, IMPLIED_VALUE, NORMALIZER, DENORMALIZER, \ 4400 MERGER, EXTRACTOR, TABLE_INDEX) \ 4401 PARSE_OPTION_WITH_MARSHALLING(Args, Diags, Success, ID, FLAGS, PARAM, \ 4402 SHOULD_PARSE, KEYPATH, DEFAULT_VALUE, \ 4403 IMPLIED_CHECK, IMPLIED_VALUE, NORMALIZER, \ 4404 MERGER, TABLE_INDEX) 4405 #include "clang/Driver/Options.inc" 4406 #undef PREPROCESSOR_OUTPUT_OPTION_WITH_MARSHALLING 4407 4408 Opts.ShowCPP = isStrictlyPreprocessorAction(Action) && !Args.hasArg(OPT_dM); 4409 Opts.ShowMacros = Args.hasArg(OPT_dM) || Args.hasArg(OPT_dD); 4410 4411 return Success && Diags.getNumErrors() == NumErrorsBefore; 4412 } 4413 4414 static bool ParsePreprocessorOutputArgs(CompilerInvocation &Res, 4415 PreprocessorOutputOptions &Opts, 4416 ArgList &Args, DiagnosticsEngine &Diags, 4417 frontend::ActionKind Action) { 4418 PreprocessorOutputOptions DummyOpts; 4419 4420 return RoundTrip( 4421 [Action](CompilerInvocation &Res, ArgList &Args, 4422 DiagnosticsEngine &Diags) { 4423 return ParsePreprocessorOutputArgsImpl(Res.getPreprocessorOutputOpts(), 4424 Args, Diags, Action); 4425 }, 4426 [Action](CompilerInvocation &Res, SmallVectorImpl<const char *> &Args, 4427 CompilerInvocation::StringAllocator SA) { 4428 GeneratePreprocessorOutputArgs(Res.getPreprocessorOutputOpts(), Args, 4429 SA, Action); 4430 }, 4431 [&DummyOpts](CompilerInvocation &Res) { 4432 std::swap(DummyOpts, Res.getPreprocessorOutputOpts()); 4433 }, 4434 Res, Args, Diags, "PreprocessorOutputOptions"); 4435 } 4436 4437 static void GenerateTargetArgs(const TargetOptions &Opts, 4438 SmallVectorImpl<const char *> &Args, 4439 CompilerInvocation::StringAllocator SA) { 4440 const TargetOptions *TargetOpts = &Opts; 4441 #define TARGET_OPTION_WITH_MARSHALLING( \ 4442 PREFIX_TYPE, NAME, ID, KIND, GROUP, ALIAS, ALIASARGS, FLAGS, PARAM, \ 4443 HELPTEXT, METAVAR, VALUES, SPELLING, SHOULD_PARSE, ALWAYS_EMIT, KEYPATH, \ 4444 DEFAULT_VALUE, IMPLIED_CHECK, IMPLIED_VALUE, NORMALIZER, DENORMALIZER, \ 4445 MERGER, EXTRACTOR, TABLE_INDEX) \ 4446 GENERATE_OPTION_WITH_MARSHALLING( \ 4447 Args, SA, KIND, FLAGS, SPELLING, ALWAYS_EMIT, KEYPATH, DEFAULT_VALUE, \ 4448 IMPLIED_CHECK, IMPLIED_VALUE, DENORMALIZER, EXTRACTOR, TABLE_INDEX) 4449 #include "clang/Driver/Options.inc" 4450 #undef TARGET_OPTION_WITH_MARSHALLING 4451 4452 if (!Opts.SDKVersion.empty()) 4453 GenerateArg(Args, OPT_target_sdk_version_EQ, Opts.SDKVersion.getAsString(), 4454 SA); 4455 } 4456 4457 static bool ParseTargetArgsImpl(TargetOptions &Opts, ArgList &Args, 4458 DiagnosticsEngine &Diags) { 4459 TargetOptions *TargetOpts = &Opts; 4460 unsigned NumErrorsBefore = Diags.getNumErrors(); 4461 bool Success = true; 4462 4463 #define TARGET_OPTION_WITH_MARSHALLING( \ 4464 PREFIX_TYPE, NAME, ID, KIND, GROUP, ALIAS, ALIASARGS, FLAGS, PARAM, \ 4465 HELPTEXT, METAVAR, VALUES, SPELLING, SHOULD_PARSE, ALWAYS_EMIT, KEYPATH, \ 4466 DEFAULT_VALUE, IMPLIED_CHECK, IMPLIED_VALUE, NORMALIZER, DENORMALIZER, \ 4467 MERGER, EXTRACTOR, TABLE_INDEX) \ 4468 PARSE_OPTION_WITH_MARSHALLING(Args, Diags, Success, ID, FLAGS, PARAM, \ 4469 SHOULD_PARSE, KEYPATH, DEFAULT_VALUE, \ 4470 IMPLIED_CHECK, IMPLIED_VALUE, NORMALIZER, \ 4471 MERGER, TABLE_INDEX) 4472 #include "clang/Driver/Options.inc" 4473 #undef TARGET_OPTION_WITH_MARSHALLING 4474 4475 if (Arg *A = Args.getLastArg(options::OPT_target_sdk_version_EQ)) { 4476 llvm::VersionTuple Version; 4477 if (Version.tryParse(A->getValue())) 4478 Diags.Report(diag::err_drv_invalid_value) 4479 << A->getAsString(Args) << A->getValue(); 4480 else 4481 Opts.SDKVersion = Version; 4482 } 4483 4484 return Success && Diags.getNumErrors() == NumErrorsBefore; 4485 } 4486 4487 static bool ParseTargetArgs(CompilerInvocation &Res, TargetOptions &Opts, 4488 ArgList &Args, DiagnosticsEngine &Diags) { 4489 auto DummyOpts = std::make_shared<TargetOptions>(); 4490 4491 return RoundTrip( 4492 [](CompilerInvocation &Res, ArgList &Args, 4493 DiagnosticsEngine &Diags) { 4494 return ParseTargetArgsImpl(Res.getTargetOpts(), Args, Diags); 4495 }, 4496 [](CompilerInvocation &Res, SmallVectorImpl<const char *> &GeneratedArgs, 4497 CompilerInvocation::StringAllocator SA) { 4498 GenerateTargetArgs(Res.getTargetOpts(), GeneratedArgs, SA); 4499 }, 4500 [&DummyOpts](CompilerInvocation &Res) { 4501 Res.TargetOpts.swap(DummyOpts); 4502 }, 4503 Res, Args, Diags, "TargetArgs"); 4504 } 4505 4506 bool CompilerInvocation::CreateFromArgs(CompilerInvocation &Res, 4507 ArrayRef<const char *> CommandLineArgs, 4508 DiagnosticsEngine &Diags, 4509 const char *Argv0) { 4510 bool Success = true; 4511 4512 // Parse the arguments. 4513 const OptTable &Opts = getDriverOptTable(); 4514 const unsigned IncludedFlagsBitmask = options::CC1Option; 4515 unsigned MissingArgIndex, MissingArgCount; 4516 InputArgList Args = Opts.ParseArgs(CommandLineArgs, MissingArgIndex, 4517 MissingArgCount, IncludedFlagsBitmask); 4518 LangOptions &LangOpts = *Res.getLangOpts(); 4519 4520 // Check for missing argument error. 4521 if (MissingArgCount) { 4522 Diags.Report(diag::err_drv_missing_argument) 4523 << Args.getArgString(MissingArgIndex) << MissingArgCount; 4524 Success = false; 4525 } 4526 4527 // Issue errors on unknown arguments. 4528 for (const auto *A : Args.filtered(OPT_UNKNOWN)) { 4529 auto ArgString = A->getAsString(Args); 4530 std::string Nearest; 4531 if (Opts.findNearest(ArgString, Nearest, IncludedFlagsBitmask) > 1) 4532 Diags.Report(diag::err_drv_unknown_argument) << ArgString; 4533 else 4534 Diags.Report(diag::err_drv_unknown_argument_with_suggestion) 4535 << ArgString << Nearest; 4536 Success = false; 4537 } 4538 4539 Success &= ParseFileSystemArgs(Res.getFileSystemOpts(), Args, Diags); 4540 Success &= ParseMigratorArgs(Res.getMigratorOpts(), Args, Diags); 4541 Success &= ParseAnalyzerArgs(Res, *Res.getAnalyzerOpts(), Args, Diags); 4542 Success &= 4543 ParseDiagnosticArgsRoundTrip(Res, Res.getDiagnosticOpts(), Args, &Diags, 4544 /*DefaultDiagColor=*/false); 4545 Success &= ParseFrontendArgs(Res, Res.getFrontendOpts(), Args, Diags, 4546 LangOpts.IsHeaderFile); 4547 // FIXME: We shouldn't have to pass the DashX option around here 4548 InputKind DashX = Res.getFrontendOpts().DashX; 4549 ParseTargetArgs(Res, Res.getTargetOpts(), Args, Diags); 4550 llvm::Triple T(Res.getTargetOpts().Triple); 4551 ParseHeaderSearchArgs(Res, Res.getHeaderSearchOpts(), Args, Diags, 4552 Res.getFileSystemOpts().WorkingDir); 4553 if (DashX.getFormat() == InputKind::Precompiled || 4554 DashX.getLanguage() == Language::LLVM_IR) { 4555 // ObjCAAutoRefCount and Sanitize LangOpts are used to setup the 4556 // PassManager in BackendUtil.cpp. They need to be initializd no matter 4557 // what the input type is. 4558 if (Args.hasArg(OPT_fobjc_arc)) 4559 LangOpts.ObjCAutoRefCount = 1; 4560 // PIClevel and PIELevel are needed during code generation and this should be 4561 // set regardless of the input type. 4562 LangOpts.PICLevel = getLastArgIntValue(Args, OPT_pic_level, 0, Diags); 4563 LangOpts.PIE = Args.hasArg(OPT_pic_is_pie); 4564 parseSanitizerKinds("-fsanitize=", Args.getAllArgValues(OPT_fsanitize_EQ), 4565 Diags, LangOpts.Sanitize); 4566 } else { 4567 // Other LangOpts are only initialized when the input is not AST or LLVM IR. 4568 // FIXME: Should we really be calling this for an Language::Asm input? 4569 Success &= ParseLangArgs(Res, LangOpts, Args, DashX, T, 4570 Res.getPreprocessorOpts().Includes, Diags); 4571 if (Res.getFrontendOpts().ProgramAction == frontend::RewriteObjC) 4572 LangOpts.ObjCExceptions = 1; 4573 if (T.isOSDarwin() && DashX.isPreprocessed()) { 4574 // Supress the darwin-specific 'stdlibcxx-not-found' diagnostic for 4575 // preprocessed input as we don't expect it to be used with -std=libc++ 4576 // anyway. 4577 Res.getDiagnosticOpts().Warnings.push_back("no-stdlibcxx-not-found"); 4578 } 4579 } 4580 4581 if (LangOpts.CUDA) { 4582 // During CUDA device-side compilation, the aux triple is the 4583 // triple used for host compilation. 4584 if (LangOpts.CUDAIsDevice) 4585 Res.getTargetOpts().HostTriple = Res.getFrontendOpts().AuxTriple; 4586 } 4587 4588 // Set the triple of the host for OpenMP device compile. 4589 if (LangOpts.OpenMPIsDevice) 4590 Res.getTargetOpts().HostTriple = Res.getFrontendOpts().AuxTriple; 4591 4592 Success &= ParseCodeGenArgs(Res, Res.getCodeGenOpts(), Args, DashX, Diags, T, 4593 Res.getFrontendOpts().OutputFile, LangOpts); 4594 4595 // FIXME: Override value name discarding when asan or msan is used because the 4596 // backend passes depend on the name of the alloca in order to print out 4597 // names. 4598 Res.getCodeGenOpts().DiscardValueNames &= 4599 !LangOpts.Sanitize.has(SanitizerKind::Address) && 4600 !LangOpts.Sanitize.has(SanitizerKind::KernelAddress) && 4601 !LangOpts.Sanitize.has(SanitizerKind::Memory) && 4602 !LangOpts.Sanitize.has(SanitizerKind::KernelMemory); 4603 4604 ParsePreprocessorArgs(Res, Res.getPreprocessorOpts(), Args, Diags, 4605 Res.getFrontendOpts().ProgramAction, 4606 Res.getFrontendOpts()); 4607 ParsePreprocessorOutputArgs(Res, Res.getPreprocessorOutputOpts(), Args, Diags, 4608 Res.getFrontendOpts().ProgramAction); 4609 4610 ParseDependencyOutputArgs(Res, Res.getDependencyOutputOpts(), Args, Diags, 4611 Res.getFrontendOpts().ProgramAction, 4612 Res.getPreprocessorOutputOpts().ShowLineMarkers); 4613 if (!Res.getDependencyOutputOpts().OutputFile.empty() && 4614 Res.getDependencyOutputOpts().Targets.empty()) { 4615 Diags.Report(diag::err_fe_dependency_file_requires_MT); 4616 Success = false; 4617 } 4618 4619 // Turn on -Wspir-compat for SPIR target. 4620 if (T.isSPIR()) 4621 Res.getDiagnosticOpts().Warnings.push_back("spir-compat"); 4622 4623 // If sanitizer is enabled, disable OPT_ffine_grained_bitfield_accesses. 4624 if (Res.getCodeGenOpts().FineGrainedBitfieldAccesses && 4625 !Res.getLangOpts()->Sanitize.empty()) { 4626 Res.getCodeGenOpts().FineGrainedBitfieldAccesses = false; 4627 Diags.Report(diag::warn_drv_fine_grained_bitfield_accesses_ignored); 4628 } 4629 4630 // Store the command-line for using in the CodeView backend. 4631 Res.getCodeGenOpts().Argv0 = Argv0; 4632 Res.getCodeGenOpts().CommandLineArgs = CommandLineArgs; 4633 4634 FixupInvocation(Res, Diags, Args, DashX); 4635 4636 return Success; 4637 } 4638 4639 std::string CompilerInvocation::getModuleHash() const { 4640 // Note: For QoI reasons, the things we use as a hash here should all be 4641 // dumped via the -module-info flag. 4642 using llvm::hash_code; 4643 using llvm::hash_value; 4644 using llvm::hash_combine; 4645 using llvm::hash_combine_range; 4646 4647 // Start the signature with the compiler version. 4648 // FIXME: We'd rather use something more cryptographically sound than 4649 // CityHash, but this will do for now. 4650 hash_code code = hash_value(getClangFullRepositoryVersion()); 4651 4652 // Also include the serialization version, in case LLVM_APPEND_VC_REV is off 4653 // and getClangFullRepositoryVersion() doesn't include git revision. 4654 code = hash_combine(code, serialization::VERSION_MAJOR, 4655 serialization::VERSION_MINOR); 4656 4657 // Extend the signature with the language options 4658 #define LANGOPT(Name, Bits, Default, Description) \ 4659 code = hash_combine(code, LangOpts->Name); 4660 #define ENUM_LANGOPT(Name, Type, Bits, Default, Description) \ 4661 code = hash_combine(code, static_cast<unsigned>(LangOpts->get##Name())); 4662 #define BENIGN_LANGOPT(Name, Bits, Default, Description) 4663 #define BENIGN_ENUM_LANGOPT(Name, Type, Bits, Default, Description) 4664 #include "clang/Basic/LangOptions.def" 4665 4666 for (StringRef Feature : LangOpts->ModuleFeatures) 4667 code = hash_combine(code, Feature); 4668 4669 code = hash_combine(code, LangOpts->ObjCRuntime); 4670 const auto &BCN = LangOpts->CommentOpts.BlockCommandNames; 4671 code = hash_combine(code, hash_combine_range(BCN.begin(), BCN.end())); 4672 4673 // Extend the signature with the target options. 4674 code = hash_combine(code, TargetOpts->Triple, TargetOpts->CPU, 4675 TargetOpts->TuneCPU, TargetOpts->ABI); 4676 for (const auto &FeatureAsWritten : TargetOpts->FeaturesAsWritten) 4677 code = hash_combine(code, FeatureAsWritten); 4678 4679 // Extend the signature with preprocessor options. 4680 const PreprocessorOptions &ppOpts = getPreprocessorOpts(); 4681 const HeaderSearchOptions &hsOpts = getHeaderSearchOpts(); 4682 code = hash_combine(code, ppOpts.UsePredefines, ppOpts.DetailedRecord); 4683 4684 for (const auto &I : getPreprocessorOpts().Macros) { 4685 // If we're supposed to ignore this macro for the purposes of modules, 4686 // don't put it into the hash. 4687 if (!hsOpts.ModulesIgnoreMacros.empty()) { 4688 // Check whether we're ignoring this macro. 4689 StringRef MacroDef = I.first; 4690 if (hsOpts.ModulesIgnoreMacros.count( 4691 llvm::CachedHashString(MacroDef.split('=').first))) 4692 continue; 4693 } 4694 4695 code = hash_combine(code, I.first, I.second); 4696 } 4697 4698 // Extend the signature with the sysroot and other header search options. 4699 code = hash_combine(code, hsOpts.Sysroot, 4700 hsOpts.ModuleFormat, 4701 hsOpts.UseDebugInfo, 4702 hsOpts.UseBuiltinIncludes, 4703 hsOpts.UseStandardSystemIncludes, 4704 hsOpts.UseStandardCXXIncludes, 4705 hsOpts.UseLibcxx, 4706 hsOpts.ModulesValidateDiagnosticOptions); 4707 code = hash_combine(code, hsOpts.ResourceDir); 4708 4709 if (hsOpts.ModulesStrictContextHash) { 4710 hash_code SHPC = hash_combine_range(hsOpts.SystemHeaderPrefixes.begin(), 4711 hsOpts.SystemHeaderPrefixes.end()); 4712 hash_code UEC = hash_combine_range(hsOpts.UserEntries.begin(), 4713 hsOpts.UserEntries.end()); 4714 code = hash_combine(code, hsOpts.SystemHeaderPrefixes.size(), SHPC, 4715 hsOpts.UserEntries.size(), UEC); 4716 4717 const DiagnosticOptions &diagOpts = getDiagnosticOpts(); 4718 #define DIAGOPT(Name, Bits, Default) \ 4719 code = hash_combine(code, diagOpts.Name); 4720 #define ENUM_DIAGOPT(Name, Type, Bits, Default) \ 4721 code = hash_combine(code, diagOpts.get##Name()); 4722 #include "clang/Basic/DiagnosticOptions.def" 4723 #undef DIAGOPT 4724 #undef ENUM_DIAGOPT 4725 } 4726 4727 // Extend the signature with the user build path. 4728 code = hash_combine(code, hsOpts.ModuleUserBuildPath); 4729 4730 // Extend the signature with the module file extensions. 4731 const FrontendOptions &frontendOpts = getFrontendOpts(); 4732 for (const auto &ext : frontendOpts.ModuleFileExtensions) { 4733 code = ext->hashExtension(code); 4734 } 4735 4736 // When compiling with -gmodules, also hash -fdebug-prefix-map as it 4737 // affects the debug info in the PCM. 4738 if (getCodeGenOpts().DebugTypeExtRefs) 4739 for (const auto &KeyValue : getCodeGenOpts().DebugPrefixMap) 4740 code = hash_combine(code, KeyValue.first, KeyValue.second); 4741 4742 // Extend the signature with the enabled sanitizers, if at least one is 4743 // enabled. Sanitizers which cannot affect AST generation aren't hashed. 4744 SanitizerSet SanHash = LangOpts->Sanitize; 4745 SanHash.clear(getPPTransparentSanitizers()); 4746 if (!SanHash.empty()) 4747 code = hash_combine(code, SanHash.Mask); 4748 4749 return llvm::APInt(64, code).toString(36, /*Signed=*/false); 4750 } 4751 4752 void CompilerInvocation::generateCC1CommandLine( 4753 SmallVectorImpl<const char *> &Args, StringAllocator SA) const { 4754 llvm::Triple T(TargetOpts->Triple); 4755 4756 GenerateFileSystemArgs(FileSystemOpts, Args, SA); 4757 GenerateMigratorArgs(MigratorOpts, Args, SA); 4758 GenerateAnalyzerArgs(*AnalyzerOpts, Args, SA); 4759 GenerateDiagnosticArgs(*DiagnosticOpts, Args, SA, false); 4760 GenerateFrontendArgs(FrontendOpts, Args, SA, LangOpts->IsHeaderFile); 4761 GenerateTargetArgs(*TargetOpts, Args, SA); 4762 GenerateHeaderSearchArgs(*HeaderSearchOpts, Args, SA); 4763 GenerateLangArgs(*LangOpts, Args, SA, T); 4764 GenerateCodeGenArgs(CodeGenOpts, Args, SA, T, FrontendOpts.OutputFile, 4765 &*LangOpts); 4766 GeneratePreprocessorArgs(*PreprocessorOpts, Args, SA, *LangOpts, FrontendOpts, 4767 CodeGenOpts); 4768 GeneratePreprocessorOutputArgs(PreprocessorOutputOpts, Args, SA, 4769 FrontendOpts.ProgramAction); 4770 GenerateDependencyOutputArgs(DependencyOutputOpts, Args, SA); 4771 } 4772 4773 IntrusiveRefCntPtr<llvm::vfs::FileSystem> 4774 clang::createVFSFromCompilerInvocation(const CompilerInvocation &CI, 4775 DiagnosticsEngine &Diags) { 4776 return createVFSFromCompilerInvocation(CI, Diags, 4777 llvm::vfs::getRealFileSystem()); 4778 } 4779 4780 IntrusiveRefCntPtr<llvm::vfs::FileSystem> 4781 clang::createVFSFromCompilerInvocation( 4782 const CompilerInvocation &CI, DiagnosticsEngine &Diags, 4783 IntrusiveRefCntPtr<llvm::vfs::FileSystem> BaseFS) { 4784 if (CI.getHeaderSearchOpts().VFSOverlayFiles.empty()) 4785 return BaseFS; 4786 4787 IntrusiveRefCntPtr<llvm::vfs::FileSystem> Result = BaseFS; 4788 // earlier vfs files are on the bottom 4789 for (const auto &File : CI.getHeaderSearchOpts().VFSOverlayFiles) { 4790 llvm::ErrorOr<std::unique_ptr<llvm::MemoryBuffer>> Buffer = 4791 Result->getBufferForFile(File); 4792 if (!Buffer) { 4793 Diags.Report(diag::err_missing_vfs_overlay_file) << File; 4794 continue; 4795 } 4796 4797 IntrusiveRefCntPtr<llvm::vfs::FileSystem> FS = llvm::vfs::getVFSFromYAML( 4798 std::move(Buffer.get()), /*DiagHandler*/ nullptr, File, 4799 /*DiagContext*/ nullptr, Result); 4800 if (!FS) { 4801 Diags.Report(diag::err_invalid_vfs_overlay) << File; 4802 continue; 4803 } 4804 4805 Result = FS; 4806 } 4807 return Result; 4808 } 4809