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/Diagnostic.h" 16 #include "clang/Basic/DiagnosticDriver.h" 17 #include "clang/Basic/DiagnosticOptions.h" 18 #include "clang/Basic/FileSystemOptions.h" 19 #include "clang/Basic/LLVM.h" 20 #include "clang/Basic/LangOptions.h" 21 #include "clang/Basic/LangStandard.h" 22 #include "clang/Basic/ObjCRuntime.h" 23 #include "clang/Basic/Sanitizers.h" 24 #include "clang/Basic/SourceLocation.h" 25 #include "clang/Basic/TargetOptions.h" 26 #include "clang/Basic/Version.h" 27 #include "clang/Basic/Visibility.h" 28 #include "clang/Basic/XRayInstr.h" 29 #include "clang/Config/config.h" 30 #include "clang/Driver/Driver.h" 31 #include "clang/Driver/DriverDiagnostic.h" 32 #include "clang/Driver/Options.h" 33 #include "clang/Frontend/CommandLineSourceLoc.h" 34 #include "clang/Frontend/DependencyOutputOptions.h" 35 #include "clang/Frontend/FrontendDiagnostic.h" 36 #include "clang/Frontend/FrontendOptions.h" 37 #include "clang/Frontend/FrontendPluginRegistry.h" 38 #include "clang/Frontend/MigratorOptions.h" 39 #include "clang/Frontend/PreprocessorOutputOptions.h" 40 #include "clang/Frontend/TextDiagnosticBuffer.h" 41 #include "clang/Frontend/Utils.h" 42 #include "clang/Lex/HeaderSearchOptions.h" 43 #include "clang/Lex/PreprocessorOptions.h" 44 #include "clang/Sema/CodeCompleteOptions.h" 45 #include "clang/Serialization/ASTBitCodes.h" 46 #include "clang/Serialization/ModuleFileExtension.h" 47 #include "clang/StaticAnalyzer/Core/AnalyzerOptions.h" 48 #include "llvm/ADT/APInt.h" 49 #include "llvm/ADT/ArrayRef.h" 50 #include "llvm/ADT/CachedHashString.h" 51 #include "llvm/ADT/DenseSet.h" 52 #include "llvm/ADT/FloatingPointMode.h" 53 #include "llvm/ADT/Hashing.h" 54 #include "llvm/ADT/STLExtras.h" 55 #include "llvm/ADT/SmallString.h" 56 #include "llvm/ADT/SmallVector.h" 57 #include "llvm/ADT/StringRef.h" 58 #include "llvm/ADT/StringSwitch.h" 59 #include "llvm/ADT/Twine.h" 60 #include "llvm/Config/llvm-config.h" 61 #include "llvm/Frontend/Debug/Options.h" 62 #include "llvm/IR/DebugInfoMetadata.h" 63 #include "llvm/Linker/Linker.h" 64 #include "llvm/MC/MCTargetOptions.h" 65 #include "llvm/Option/Arg.h" 66 #include "llvm/Option/ArgList.h" 67 #include "llvm/Option/OptSpecifier.h" 68 #include "llvm/Option/OptTable.h" 69 #include "llvm/Option/Option.h" 70 #include "llvm/ProfileData/InstrProfReader.h" 71 #include "llvm/Remarks/HotnessThresholdParser.h" 72 #include "llvm/Support/CodeGen.h" 73 #include "llvm/Support/Compiler.h" 74 #include "llvm/Support/Error.h" 75 #include "llvm/Support/ErrorHandling.h" 76 #include "llvm/Support/ErrorOr.h" 77 #include "llvm/Support/FileSystem.h" 78 #include "llvm/Support/HashBuilder.h" 79 #include "llvm/Support/MathExtras.h" 80 #include "llvm/Support/MemoryBuffer.h" 81 #include "llvm/Support/Path.h" 82 #include "llvm/Support/Process.h" 83 #include "llvm/Support/Regex.h" 84 #include "llvm/Support/VersionTuple.h" 85 #include "llvm/Support/VirtualFileSystem.h" 86 #include "llvm/Support/raw_ostream.h" 87 #include "llvm/Target/TargetOptions.h" 88 #include "llvm/TargetParser/Host.h" 89 #include "llvm/TargetParser/Triple.h" 90 #include <algorithm> 91 #include <atomic> 92 #include <cassert> 93 #include <cstddef> 94 #include <cstring> 95 #include <ctime> 96 #include <fstream> 97 #include <limits> 98 #include <memory> 99 #include <optional> 100 #include <string> 101 #include <tuple> 102 #include <type_traits> 103 #include <utility> 104 #include <vector> 105 106 using namespace clang; 107 using namespace driver; 108 using namespace options; 109 using namespace llvm::opt; 110 111 //===----------------------------------------------------------------------===// 112 // Helpers. 113 //===----------------------------------------------------------------------===// 114 115 // Parse misexpect tolerance argument value. 116 // Valid option values are integers in the range [0, 100) 117 static Expected<std::optional<uint32_t>> parseToleranceOption(StringRef Arg) { 118 uint32_t Val; 119 if (Arg.getAsInteger(10, Val)) 120 return llvm::createStringError(llvm::inconvertibleErrorCode(), 121 "Not an integer: %s", Arg.data()); 122 return Val; 123 } 124 125 //===----------------------------------------------------------------------===// 126 // Initialization. 127 //===----------------------------------------------------------------------===// 128 129 CompilerInvocationRefBase::CompilerInvocationRefBase() 130 : LangOpts(new LangOptions()), TargetOpts(new TargetOptions()), 131 DiagnosticOpts(new DiagnosticOptions()), 132 HeaderSearchOpts(new HeaderSearchOptions()), 133 PreprocessorOpts(new PreprocessorOptions()), 134 AnalyzerOpts(new AnalyzerOptions()) {} 135 136 CompilerInvocationRefBase::CompilerInvocationRefBase( 137 const CompilerInvocationRefBase &X) 138 : LangOpts(new LangOptions(*X.getLangOpts())), 139 TargetOpts(new TargetOptions(X.getTargetOpts())), 140 DiagnosticOpts(new DiagnosticOptions(X.getDiagnosticOpts())), 141 HeaderSearchOpts(new HeaderSearchOptions(X.getHeaderSearchOpts())), 142 PreprocessorOpts(new PreprocessorOptions(X.getPreprocessorOpts())), 143 AnalyzerOpts(new AnalyzerOptions(*X.getAnalyzerOpts())) {} 144 145 CompilerInvocationRefBase::CompilerInvocationRefBase( 146 CompilerInvocationRefBase &&X) = default; 147 148 CompilerInvocationRefBase & 149 CompilerInvocationRefBase::operator=(CompilerInvocationRefBase X) { 150 LangOpts.swap(X.LangOpts); 151 TargetOpts.swap(X.TargetOpts); 152 DiagnosticOpts.swap(X.DiagnosticOpts); 153 HeaderSearchOpts.swap(X.HeaderSearchOpts); 154 PreprocessorOpts.swap(X.PreprocessorOpts); 155 AnalyzerOpts.swap(X.AnalyzerOpts); 156 return *this; 157 } 158 159 CompilerInvocationRefBase & 160 CompilerInvocationRefBase::operator=(CompilerInvocationRefBase &&X) = default; 161 162 CompilerInvocationRefBase::~CompilerInvocationRefBase() = default; 163 164 //===----------------------------------------------------------------------===// 165 // Normalizers 166 //===----------------------------------------------------------------------===// 167 168 using ArgumentConsumer = CompilerInvocation::ArgumentConsumer; 169 170 #define SIMPLE_ENUM_VALUE_TABLE 171 #include "clang/Driver/Options.inc" 172 #undef SIMPLE_ENUM_VALUE_TABLE 173 174 static std::optional<bool> normalizeSimpleFlag(OptSpecifier Opt, 175 unsigned TableIndex, 176 const ArgList &Args, 177 DiagnosticsEngine &Diags) { 178 if (Args.hasArg(Opt)) 179 return true; 180 return std::nullopt; 181 } 182 183 static std::optional<bool> normalizeSimpleNegativeFlag(OptSpecifier Opt, 184 unsigned, 185 const ArgList &Args, 186 DiagnosticsEngine &) { 187 if (Args.hasArg(Opt)) 188 return false; 189 return std::nullopt; 190 } 191 192 /// The tblgen-erated code passes in a fifth parameter of an arbitrary type, but 193 /// denormalizeSimpleFlags never looks at it. Avoid bloating compile-time with 194 /// unnecessary template instantiations and just ignore it with a variadic 195 /// argument. 196 static void denormalizeSimpleFlag(ArgumentConsumer Consumer, 197 const Twine &Spelling, Option::OptionClass, 198 unsigned, /*T*/...) { 199 Consumer(Spelling); 200 } 201 202 template <typename T> static constexpr bool is_uint64_t_convertible() { 203 return !std::is_same_v<T, uint64_t> && llvm::is_integral_or_enum<T>::value; 204 } 205 206 template <typename T, 207 std::enable_if_t<!is_uint64_t_convertible<T>(), bool> = false> 208 static auto makeFlagToValueNormalizer(T Value) { 209 return [Value](OptSpecifier Opt, unsigned, const ArgList &Args, 210 DiagnosticsEngine &) -> std::optional<T> { 211 if (Args.hasArg(Opt)) 212 return Value; 213 return std::nullopt; 214 }; 215 } 216 217 template <typename T, 218 std::enable_if_t<is_uint64_t_convertible<T>(), bool> = false> 219 static auto makeFlagToValueNormalizer(T Value) { 220 return makeFlagToValueNormalizer(uint64_t(Value)); 221 } 222 223 static auto makeBooleanOptionNormalizer(bool Value, bool OtherValue, 224 OptSpecifier OtherOpt) { 225 return [Value, OtherValue, 226 OtherOpt](OptSpecifier Opt, unsigned, const ArgList &Args, 227 DiagnosticsEngine &) -> std::optional<bool> { 228 if (const Arg *A = Args.getLastArg(Opt, OtherOpt)) { 229 return A->getOption().matches(Opt) ? Value : OtherValue; 230 } 231 return std::nullopt; 232 }; 233 } 234 235 static auto makeBooleanOptionDenormalizer(bool Value) { 236 return [Value](ArgumentConsumer Consumer, const Twine &Spelling, 237 Option::OptionClass, unsigned, bool KeyPath) { 238 if (KeyPath == Value) 239 Consumer(Spelling); 240 }; 241 } 242 243 static void denormalizeStringImpl(ArgumentConsumer Consumer, 244 const Twine &Spelling, 245 Option::OptionClass OptClass, unsigned, 246 const Twine &Value) { 247 switch (OptClass) { 248 case Option::SeparateClass: 249 case Option::JoinedOrSeparateClass: 250 case Option::JoinedAndSeparateClass: 251 Consumer(Spelling); 252 Consumer(Value); 253 break; 254 case Option::JoinedClass: 255 case Option::CommaJoinedClass: 256 Consumer(Spelling + Value); 257 break; 258 default: 259 llvm_unreachable("Cannot denormalize an option with option class " 260 "incompatible with string denormalization."); 261 } 262 } 263 264 template <typename T> 265 static void denormalizeString(ArgumentConsumer Consumer, const Twine &Spelling, 266 Option::OptionClass OptClass, unsigned TableIndex, 267 T Value) { 268 denormalizeStringImpl(Consumer, Spelling, OptClass, TableIndex, Twine(Value)); 269 } 270 271 static std::optional<SimpleEnumValue> 272 findValueTableByName(const SimpleEnumValueTable &Table, StringRef Name) { 273 for (int I = 0, E = Table.Size; I != E; ++I) 274 if (Name == Table.Table[I].Name) 275 return Table.Table[I]; 276 277 return std::nullopt; 278 } 279 280 static std::optional<SimpleEnumValue> 281 findValueTableByValue(const SimpleEnumValueTable &Table, unsigned Value) { 282 for (int I = 0, E = Table.Size; I != E; ++I) 283 if (Value == Table.Table[I].Value) 284 return Table.Table[I]; 285 286 return std::nullopt; 287 } 288 289 static std::optional<unsigned> normalizeSimpleEnum(OptSpecifier Opt, 290 unsigned TableIndex, 291 const ArgList &Args, 292 DiagnosticsEngine &Diags) { 293 assert(TableIndex < SimpleEnumValueTablesSize); 294 const SimpleEnumValueTable &Table = SimpleEnumValueTables[TableIndex]; 295 296 auto *Arg = Args.getLastArg(Opt); 297 if (!Arg) 298 return std::nullopt; 299 300 StringRef ArgValue = Arg->getValue(); 301 if (auto MaybeEnumVal = findValueTableByName(Table, ArgValue)) 302 return MaybeEnumVal->Value; 303 304 Diags.Report(diag::err_drv_invalid_value) 305 << Arg->getAsString(Args) << ArgValue; 306 return std::nullopt; 307 } 308 309 static void denormalizeSimpleEnumImpl(ArgumentConsumer Consumer, 310 const Twine &Spelling, 311 Option::OptionClass OptClass, 312 unsigned TableIndex, unsigned Value) { 313 assert(TableIndex < SimpleEnumValueTablesSize); 314 const SimpleEnumValueTable &Table = SimpleEnumValueTables[TableIndex]; 315 if (auto MaybeEnumVal = findValueTableByValue(Table, Value)) { 316 denormalizeString(Consumer, Spelling, OptClass, TableIndex, 317 MaybeEnumVal->Name); 318 } else { 319 llvm_unreachable("The simple enum value was not correctly defined in " 320 "the tablegen option description"); 321 } 322 } 323 324 template <typename T> 325 static void denormalizeSimpleEnum(ArgumentConsumer Consumer, 326 const Twine &Spelling, 327 Option::OptionClass OptClass, 328 unsigned TableIndex, T Value) { 329 return denormalizeSimpleEnumImpl(Consumer, Spelling, OptClass, TableIndex, 330 static_cast<unsigned>(Value)); 331 } 332 333 static std::optional<std::string> normalizeString(OptSpecifier Opt, 334 int TableIndex, 335 const ArgList &Args, 336 DiagnosticsEngine &Diags) { 337 auto *Arg = Args.getLastArg(Opt); 338 if (!Arg) 339 return std::nullopt; 340 return std::string(Arg->getValue()); 341 } 342 343 template <typename IntTy> 344 static std::optional<IntTy> normalizeStringIntegral(OptSpecifier Opt, int, 345 const ArgList &Args, 346 DiagnosticsEngine &Diags) { 347 auto *Arg = Args.getLastArg(Opt); 348 if (!Arg) 349 return std::nullopt; 350 IntTy Res; 351 if (StringRef(Arg->getValue()).getAsInteger(0, Res)) { 352 Diags.Report(diag::err_drv_invalid_int_value) 353 << Arg->getAsString(Args) << Arg->getValue(); 354 return std::nullopt; 355 } 356 return Res; 357 } 358 359 static std::optional<std::vector<std::string>> 360 normalizeStringVector(OptSpecifier Opt, int, const ArgList &Args, 361 DiagnosticsEngine &) { 362 return Args.getAllArgValues(Opt); 363 } 364 365 static void denormalizeStringVector(ArgumentConsumer Consumer, 366 const Twine &Spelling, 367 Option::OptionClass OptClass, 368 unsigned TableIndex, 369 const std::vector<std::string> &Values) { 370 switch (OptClass) { 371 case Option::CommaJoinedClass: { 372 std::string CommaJoinedValue; 373 if (!Values.empty()) { 374 CommaJoinedValue.append(Values.front()); 375 for (const std::string &Value : llvm::drop_begin(Values, 1)) { 376 CommaJoinedValue.append(","); 377 CommaJoinedValue.append(Value); 378 } 379 } 380 denormalizeString(Consumer, Spelling, Option::OptionClass::JoinedClass, 381 TableIndex, CommaJoinedValue); 382 break; 383 } 384 case Option::JoinedClass: 385 case Option::SeparateClass: 386 case Option::JoinedOrSeparateClass: 387 for (const std::string &Value : Values) 388 denormalizeString(Consumer, Spelling, OptClass, TableIndex, Value); 389 break; 390 default: 391 llvm_unreachable("Cannot denormalize an option with option class " 392 "incompatible with string vector denormalization."); 393 } 394 } 395 396 static std::optional<std::string> normalizeTriple(OptSpecifier Opt, 397 int TableIndex, 398 const ArgList &Args, 399 DiagnosticsEngine &Diags) { 400 auto *Arg = Args.getLastArg(Opt); 401 if (!Arg) 402 return std::nullopt; 403 return llvm::Triple::normalize(Arg->getValue()); 404 } 405 406 template <typename T, typename U> 407 static T mergeForwardValue(T KeyPath, U Value) { 408 return static_cast<T>(Value); 409 } 410 411 template <typename T, typename U> static T mergeMaskValue(T KeyPath, U Value) { 412 return KeyPath | Value; 413 } 414 415 template <typename T> static T extractForwardValue(T KeyPath) { 416 return KeyPath; 417 } 418 419 template <typename T, typename U, U Value> 420 static T extractMaskValue(T KeyPath) { 421 return ((KeyPath & Value) == Value) ? static_cast<T>(Value) : T(); 422 } 423 424 #define PARSE_OPTION_WITH_MARSHALLING( \ 425 ARGS, DIAGS, PREFIX_TYPE, SPELLING, ID, KIND, GROUP, ALIAS, ALIASARGS, \ 426 FLAGS, VISIBILITY, PARAM, HELPTEXT, METAVAR, VALUES, SHOULD_PARSE, \ 427 ALWAYS_EMIT, KEYPATH, DEFAULT_VALUE, IMPLIED_CHECK, IMPLIED_VALUE, \ 428 NORMALIZER, DENORMALIZER, MERGER, EXTRACTOR, TABLE_INDEX) \ 429 if ((FLAGS)&options::CC1Option) { \ 430 KEYPATH = MERGER(KEYPATH, DEFAULT_VALUE); \ 431 if (IMPLIED_CHECK) \ 432 KEYPATH = MERGER(KEYPATH, IMPLIED_VALUE); \ 433 if (SHOULD_PARSE) \ 434 if (auto MaybeValue = NORMALIZER(OPT_##ID, TABLE_INDEX, ARGS, DIAGS)) \ 435 KEYPATH = \ 436 MERGER(KEYPATH, static_cast<decltype(KEYPATH)>(*MaybeValue)); \ 437 } 438 439 // Capture the extracted value as a lambda argument to avoid potential issues 440 // with lifetime extension of the reference. 441 #define GENERATE_OPTION_WITH_MARSHALLING( \ 442 CONSUMER, PREFIX_TYPE, SPELLING, ID, KIND, GROUP, ALIAS, ALIASARGS, FLAGS, \ 443 VISIBILKITY, PARAM, HELPTEXT, METAVAR, VALUES, SHOULD_PARSE, ALWAYS_EMIT, \ 444 KEYPATH, DEFAULT_VALUE, IMPLIED_CHECK, IMPLIED_VALUE, NORMALIZER, \ 445 DENORMALIZER, MERGER, EXTRACTOR, TABLE_INDEX) \ 446 if ((FLAGS)&options::CC1Option) { \ 447 [&](const auto &Extracted) { \ 448 if (ALWAYS_EMIT || \ 449 (Extracted != \ 450 static_cast<decltype(KEYPATH)>((IMPLIED_CHECK) ? (IMPLIED_VALUE) \ 451 : (DEFAULT_VALUE)))) \ 452 DENORMALIZER(CONSUMER, SPELLING, Option::KIND##Class, TABLE_INDEX, \ 453 Extracted); \ 454 }(EXTRACTOR(KEYPATH)); \ 455 } 456 457 static StringRef GetInputKindName(InputKind IK); 458 459 static bool FixupInvocation(CompilerInvocation &Invocation, 460 DiagnosticsEngine &Diags, const ArgList &Args, 461 InputKind IK) { 462 unsigned NumErrorsBefore = Diags.getNumErrors(); 463 464 LangOptions &LangOpts = *Invocation.getLangOpts(); 465 CodeGenOptions &CodeGenOpts = Invocation.getCodeGenOpts(); 466 TargetOptions &TargetOpts = Invocation.getTargetOpts(); 467 FrontendOptions &FrontendOpts = Invocation.getFrontendOpts(); 468 CodeGenOpts.XRayInstrumentFunctions = LangOpts.XRayInstrument; 469 CodeGenOpts.XRayAlwaysEmitCustomEvents = LangOpts.XRayAlwaysEmitCustomEvents; 470 CodeGenOpts.XRayAlwaysEmitTypedEvents = LangOpts.XRayAlwaysEmitTypedEvents; 471 CodeGenOpts.DisableFree = FrontendOpts.DisableFree; 472 FrontendOpts.GenerateGlobalModuleIndex = FrontendOpts.UseGlobalModuleIndex; 473 if (FrontendOpts.ShowStats) 474 CodeGenOpts.ClearASTBeforeBackend = false; 475 LangOpts.SanitizeCoverage = CodeGenOpts.hasSanitizeCoverage(); 476 LangOpts.ForceEmitVTables = CodeGenOpts.ForceEmitVTables; 477 LangOpts.SpeculativeLoadHardening = CodeGenOpts.SpeculativeLoadHardening; 478 LangOpts.CurrentModule = LangOpts.ModuleName; 479 480 llvm::Triple T(TargetOpts.Triple); 481 llvm::Triple::ArchType Arch = T.getArch(); 482 483 CodeGenOpts.CodeModel = TargetOpts.CodeModel; 484 485 if (LangOpts.getExceptionHandling() != 486 LangOptions::ExceptionHandlingKind::None && 487 T.isWindowsMSVCEnvironment()) 488 Diags.Report(diag::err_fe_invalid_exception_model) 489 << static_cast<unsigned>(LangOpts.getExceptionHandling()) << T.str(); 490 491 if (LangOpts.AppleKext && !LangOpts.CPlusPlus) 492 Diags.Report(diag::warn_c_kext); 493 494 if (LangOpts.NewAlignOverride && 495 !llvm::isPowerOf2_32(LangOpts.NewAlignOverride)) { 496 Arg *A = Args.getLastArg(OPT_fnew_alignment_EQ); 497 Diags.Report(diag::err_fe_invalid_alignment) 498 << A->getAsString(Args) << A->getValue(); 499 LangOpts.NewAlignOverride = 0; 500 } 501 502 // Prevent the user from specifying both -fsycl-is-device and -fsycl-is-host. 503 if (LangOpts.SYCLIsDevice && LangOpts.SYCLIsHost) 504 Diags.Report(diag::err_drv_argument_not_allowed_with) << "-fsycl-is-device" 505 << "-fsycl-is-host"; 506 507 if (Args.hasArg(OPT_fgnu89_inline) && LangOpts.CPlusPlus) 508 Diags.Report(diag::err_drv_argument_not_allowed_with) 509 << "-fgnu89-inline" << GetInputKindName(IK); 510 511 if (Args.hasArg(OPT_hlsl_entrypoint) && !LangOpts.HLSL) 512 Diags.Report(diag::err_drv_argument_not_allowed_with) 513 << "-hlsl-entry" << GetInputKindName(IK); 514 515 if (Args.hasArg(OPT_fgpu_allow_device_init) && !LangOpts.HIP) 516 Diags.Report(diag::warn_ignored_hip_only_option) 517 << Args.getLastArg(OPT_fgpu_allow_device_init)->getAsString(Args); 518 519 if (Args.hasArg(OPT_gpu_max_threads_per_block_EQ) && !LangOpts.HIP) 520 Diags.Report(diag::warn_ignored_hip_only_option) 521 << Args.getLastArg(OPT_gpu_max_threads_per_block_EQ)->getAsString(Args); 522 523 // When these options are used, the compiler is allowed to apply 524 // optimizations that may affect the final result. For example 525 // (x+y)+z is transformed to x+(y+z) but may not give the same 526 // final result; it's not value safe. 527 // Another example can be to simplify x/x to 1.0 but x could be 0.0, INF 528 // or NaN. Final result may then differ. An error is issued when the eval 529 // method is set with one of these options. 530 if (Args.hasArg(OPT_ffp_eval_method_EQ)) { 531 if (LangOpts.ApproxFunc) 532 Diags.Report(diag::err_incompatible_fp_eval_method_options) << 0; 533 if (LangOpts.AllowFPReassoc) 534 Diags.Report(diag::err_incompatible_fp_eval_method_options) << 1; 535 if (LangOpts.AllowRecip) 536 Diags.Report(diag::err_incompatible_fp_eval_method_options) << 2; 537 } 538 539 // -cl-strict-aliasing needs to emit diagnostic in the case where CL > 1.0. 540 // This option should be deprecated for CL > 1.0 because 541 // this option was added for compatibility with OpenCL 1.0. 542 if (Args.getLastArg(OPT_cl_strict_aliasing) && 543 (LangOpts.getOpenCLCompatibleVersion() > 100)) 544 Diags.Report(diag::warn_option_invalid_ocl_version) 545 << LangOpts.getOpenCLVersionString() 546 << Args.getLastArg(OPT_cl_strict_aliasing)->getAsString(Args); 547 548 if (Arg *A = Args.getLastArg(OPT_fdefault_calling_conv_EQ)) { 549 auto DefaultCC = LangOpts.getDefaultCallingConv(); 550 551 bool emitError = (DefaultCC == LangOptions::DCC_FastCall || 552 DefaultCC == LangOptions::DCC_StdCall) && 553 Arch != llvm::Triple::x86; 554 emitError |= (DefaultCC == LangOptions::DCC_VectorCall || 555 DefaultCC == LangOptions::DCC_RegCall) && 556 !T.isX86(); 557 if (emitError) 558 Diags.Report(diag::err_drv_argument_not_allowed_with) 559 << A->getSpelling() << T.getTriple(); 560 } 561 562 return Diags.getNumErrors() == NumErrorsBefore; 563 } 564 565 //===----------------------------------------------------------------------===// 566 // Deserialization (from args) 567 //===----------------------------------------------------------------------===// 568 569 static unsigned getOptimizationLevel(ArgList &Args, InputKind IK, 570 DiagnosticsEngine &Diags) { 571 unsigned DefaultOpt = llvm::CodeGenOpt::None; 572 if ((IK.getLanguage() == Language::OpenCL || 573 IK.getLanguage() == Language::OpenCLCXX) && 574 !Args.hasArg(OPT_cl_opt_disable)) 575 DefaultOpt = llvm::CodeGenOpt::Default; 576 577 if (Arg *A = Args.getLastArg(options::OPT_O_Group)) { 578 if (A->getOption().matches(options::OPT_O0)) 579 return llvm::CodeGenOpt::None; 580 581 if (A->getOption().matches(options::OPT_Ofast)) 582 return llvm::CodeGenOpt::Aggressive; 583 584 assert(A->getOption().matches(options::OPT_O)); 585 586 StringRef S(A->getValue()); 587 if (S == "s" || S == "z") 588 return llvm::CodeGenOpt::Default; 589 590 if (S == "g") 591 return llvm::CodeGenOpt::Less; 592 593 return getLastArgIntValue(Args, OPT_O, DefaultOpt, Diags); 594 } 595 596 return DefaultOpt; 597 } 598 599 static unsigned getOptimizationLevelSize(ArgList &Args) { 600 if (Arg *A = Args.getLastArg(options::OPT_O_Group)) { 601 if (A->getOption().matches(options::OPT_O)) { 602 switch (A->getValue()[0]) { 603 default: 604 return 0; 605 case 's': 606 return 1; 607 case 'z': 608 return 2; 609 } 610 } 611 } 612 return 0; 613 } 614 615 static void GenerateArg(ArgumentConsumer Consumer, 616 llvm::opt::OptSpecifier OptSpecifier) { 617 Option Opt = getDriverOptTable().getOption(OptSpecifier); 618 denormalizeSimpleFlag(Consumer, Opt.getPrefixedName(), 619 Option::OptionClass::FlagClass, 0); 620 } 621 622 static void GenerateArg(ArgumentConsumer Consumer, 623 llvm::opt::OptSpecifier OptSpecifier, 624 const Twine &Value) { 625 Option Opt = getDriverOptTable().getOption(OptSpecifier); 626 denormalizeString(Consumer, Opt.getPrefixedName(), Opt.getKind(), 0, Value); 627 } 628 629 // Parse command line arguments into CompilerInvocation. 630 using ParseFn = 631 llvm::function_ref<bool(CompilerInvocation &, ArrayRef<const char *>, 632 DiagnosticsEngine &, const char *)>; 633 634 // Generate command line arguments from CompilerInvocation. 635 using GenerateFn = llvm::function_ref<void( 636 CompilerInvocation &, SmallVectorImpl<const char *> &, 637 CompilerInvocation::StringAllocator)>; 638 639 /// May perform round-trip of command line arguments. By default, the round-trip 640 /// is enabled in assert builds. This can be overwritten at run-time via the 641 /// "-round-trip-args" and "-no-round-trip-args" command line flags, or via the 642 /// ForceRoundTrip parameter. 643 /// 644 /// During round-trip, the command line arguments are parsed into a dummy 645 /// CompilerInvocation, which is used to generate the command line arguments 646 /// again. The real CompilerInvocation is then created by parsing the generated 647 /// arguments, not the original ones. This (in combination with tests covering 648 /// argument behavior) ensures the generated command line is complete (doesn't 649 /// drop/mangle any arguments). 650 /// 651 /// Finally, we check the command line that was used to create the real 652 /// CompilerInvocation instance. By default, we compare it to the command line 653 /// the real CompilerInvocation generates. This checks whether the generator is 654 /// deterministic. If \p CheckAgainstOriginalInvocation is enabled, we instead 655 /// compare it to the original command line to verify the original command-line 656 /// was canonical and can round-trip exactly. 657 static bool RoundTrip(ParseFn Parse, GenerateFn Generate, 658 CompilerInvocation &RealInvocation, 659 CompilerInvocation &DummyInvocation, 660 ArrayRef<const char *> CommandLineArgs, 661 DiagnosticsEngine &Diags, const char *Argv0, 662 bool CheckAgainstOriginalInvocation = false, 663 bool ForceRoundTrip = false) { 664 #ifndef NDEBUG 665 bool DoRoundTripDefault = true; 666 #else 667 bool DoRoundTripDefault = false; 668 #endif 669 670 bool DoRoundTrip = DoRoundTripDefault; 671 if (ForceRoundTrip) { 672 DoRoundTrip = true; 673 } else { 674 for (const auto *Arg : CommandLineArgs) { 675 if (Arg == StringRef("-round-trip-args")) 676 DoRoundTrip = true; 677 if (Arg == StringRef("-no-round-trip-args")) 678 DoRoundTrip = false; 679 } 680 } 681 682 // If round-trip was not requested, simply run the parser with the real 683 // invocation diagnostics. 684 if (!DoRoundTrip) 685 return Parse(RealInvocation, CommandLineArgs, Diags, Argv0); 686 687 // Serializes quoted (and potentially escaped) arguments. 688 auto SerializeArgs = [](ArrayRef<const char *> Args) { 689 std::string Buffer; 690 llvm::raw_string_ostream OS(Buffer); 691 for (const char *Arg : Args) { 692 llvm::sys::printArg(OS, Arg, /*Quote=*/true); 693 OS << ' '; 694 } 695 OS.flush(); 696 return Buffer; 697 }; 698 699 // Setup a dummy DiagnosticsEngine. 700 DiagnosticsEngine DummyDiags(new DiagnosticIDs(), new DiagnosticOptions()); 701 DummyDiags.setClient(new TextDiagnosticBuffer()); 702 703 // Run the first parse on the original arguments with the dummy invocation and 704 // diagnostics. 705 if (!Parse(DummyInvocation, CommandLineArgs, DummyDiags, Argv0) || 706 DummyDiags.getNumWarnings() != 0) { 707 // If the first parse did not succeed, it must be user mistake (invalid 708 // command line arguments). We won't be able to generate arguments that 709 // would reproduce the same result. Let's fail again with the real 710 // invocation and diagnostics, so all side-effects of parsing are visible. 711 unsigned NumWarningsBefore = Diags.getNumWarnings(); 712 auto Success = Parse(RealInvocation, CommandLineArgs, Diags, Argv0); 713 if (!Success || Diags.getNumWarnings() != NumWarningsBefore) 714 return Success; 715 716 // Parse with original options and diagnostics succeeded even though it 717 // shouldn't have. Something is off. 718 Diags.Report(diag::err_cc1_round_trip_fail_then_ok); 719 Diags.Report(diag::note_cc1_round_trip_original) 720 << SerializeArgs(CommandLineArgs); 721 return false; 722 } 723 724 // Setup string allocator. 725 llvm::BumpPtrAllocator Alloc; 726 llvm::StringSaver StringPool(Alloc); 727 auto SA = [&StringPool](const Twine &Arg) { 728 return StringPool.save(Arg).data(); 729 }; 730 731 // Generate arguments from the dummy invocation. If Generate is the 732 // inverse of Parse, the newly generated arguments must have the same 733 // semantics as the original. 734 SmallVector<const char *> GeneratedArgs; 735 Generate(DummyInvocation, GeneratedArgs, SA); 736 737 // Run the second parse, now on the generated arguments, and with the real 738 // invocation and diagnostics. The result is what we will end up using for the 739 // rest of compilation, so if Generate is not inverse of Parse, something down 740 // the line will break. 741 bool Success2 = Parse(RealInvocation, GeneratedArgs, Diags, Argv0); 742 743 // The first parse on original arguments succeeded, but second parse of 744 // generated arguments failed. Something must be wrong with the generator. 745 if (!Success2) { 746 Diags.Report(diag::err_cc1_round_trip_ok_then_fail); 747 Diags.Report(diag::note_cc1_round_trip_generated) 748 << 1 << SerializeArgs(GeneratedArgs); 749 return false; 750 } 751 752 SmallVector<const char *> ComparisonArgs; 753 if (CheckAgainstOriginalInvocation) 754 // Compare against original arguments. 755 ComparisonArgs.assign(CommandLineArgs.begin(), CommandLineArgs.end()); 756 else 757 // Generate arguments again, this time from the options we will end up using 758 // for the rest of the compilation. 759 Generate(RealInvocation, ComparisonArgs, SA); 760 761 // Compares two lists of arguments. 762 auto Equal = [](const ArrayRef<const char *> A, 763 const ArrayRef<const char *> B) { 764 return std::equal(A.begin(), A.end(), B.begin(), B.end(), 765 [](const char *AElem, const char *BElem) { 766 return StringRef(AElem) == StringRef(BElem); 767 }); 768 }; 769 770 // If we generated different arguments from what we assume are two 771 // semantically equivalent CompilerInvocations, the Generate function may 772 // be non-deterministic. 773 if (!Equal(GeneratedArgs, ComparisonArgs)) { 774 Diags.Report(diag::err_cc1_round_trip_mismatch); 775 Diags.Report(diag::note_cc1_round_trip_generated) 776 << 1 << SerializeArgs(GeneratedArgs); 777 Diags.Report(diag::note_cc1_round_trip_generated) 778 << 2 << SerializeArgs(ComparisonArgs); 779 return false; 780 } 781 782 Diags.Report(diag::remark_cc1_round_trip_generated) 783 << 1 << SerializeArgs(GeneratedArgs); 784 Diags.Report(diag::remark_cc1_round_trip_generated) 785 << 2 << SerializeArgs(ComparisonArgs); 786 787 return Success2; 788 } 789 790 bool CompilerInvocation::checkCC1RoundTrip(ArrayRef<const char *> Args, 791 DiagnosticsEngine &Diags, 792 const char *Argv0) { 793 CompilerInvocation DummyInvocation1, DummyInvocation2; 794 return RoundTrip( 795 [](CompilerInvocation &Invocation, ArrayRef<const char *> CommandLineArgs, 796 DiagnosticsEngine &Diags, const char *Argv0) { 797 return CreateFromArgsImpl(Invocation, CommandLineArgs, Diags, Argv0); 798 }, 799 [](CompilerInvocation &Invocation, SmallVectorImpl<const char *> &Args, 800 StringAllocator SA) { 801 Args.push_back("-cc1"); 802 Invocation.generateCC1CommandLine(Args, SA); 803 }, 804 DummyInvocation1, DummyInvocation2, Args, Diags, Argv0, 805 /*CheckAgainstOriginalInvocation=*/true, /*ForceRoundTrip=*/true); 806 } 807 808 static void addDiagnosticArgs(ArgList &Args, OptSpecifier Group, 809 OptSpecifier GroupWithValue, 810 std::vector<std::string> &Diagnostics) { 811 for (auto *A : Args.filtered(Group)) { 812 if (A->getOption().getKind() == Option::FlagClass) { 813 // The argument is a pure flag (such as OPT_Wall or OPT_Wdeprecated). Add 814 // its name (minus the "W" or "R" at the beginning) to the diagnostics. 815 Diagnostics.push_back( 816 std::string(A->getOption().getName().drop_front(1))); 817 } else if (A->getOption().matches(GroupWithValue)) { 818 // This is -Wfoo= or -Rfoo=, where foo is the name of the diagnostic 819 // group. Add only the group name to the diagnostics. 820 Diagnostics.push_back( 821 std::string(A->getOption().getName().drop_front(1).rtrim("=-"))); 822 } else { 823 // Otherwise, add its value (for OPT_W_Joined and similar). 824 Diagnostics.push_back(A->getValue()); 825 } 826 } 827 } 828 829 // Parse the Static Analyzer configuration. If \p Diags is set to nullptr, 830 // it won't verify the input. 831 static void parseAnalyzerConfigs(AnalyzerOptions &AnOpts, 832 DiagnosticsEngine *Diags); 833 834 static void getAllNoBuiltinFuncValues(ArgList &Args, 835 std::vector<std::string> &Funcs) { 836 std::vector<std::string> Values = Args.getAllArgValues(OPT_fno_builtin_); 837 auto BuiltinEnd = llvm::partition(Values, Builtin::Context::isBuiltinFunc); 838 Funcs.insert(Funcs.end(), Values.begin(), BuiltinEnd); 839 } 840 841 static void GenerateAnalyzerArgs(AnalyzerOptions &Opts, 842 ArgumentConsumer Consumer) { 843 const AnalyzerOptions *AnalyzerOpts = &Opts; 844 845 #define ANALYZER_OPTION_WITH_MARSHALLING(...) \ 846 GENERATE_OPTION_WITH_MARSHALLING(Consumer, __VA_ARGS__) 847 #include "clang/Driver/Options.inc" 848 #undef ANALYZER_OPTION_WITH_MARSHALLING 849 850 if (Opts.AnalysisConstraintsOpt != RangeConstraintsModel) { 851 switch (Opts.AnalysisConstraintsOpt) { 852 #define ANALYSIS_CONSTRAINTS(NAME, CMDFLAG, DESC, CREATFN) \ 853 case NAME##Model: \ 854 GenerateArg(Consumer, OPT_analyzer_constraints, CMDFLAG); \ 855 break; 856 #include "clang/StaticAnalyzer/Core/Analyses.def" 857 default: 858 llvm_unreachable("Tried to generate unknown analysis constraint."); 859 } 860 } 861 862 if (Opts.AnalysisDiagOpt != PD_HTML) { 863 switch (Opts.AnalysisDiagOpt) { 864 #define ANALYSIS_DIAGNOSTICS(NAME, CMDFLAG, DESC, CREATFN) \ 865 case PD_##NAME: \ 866 GenerateArg(Consumer, OPT_analyzer_output, CMDFLAG); \ 867 break; 868 #include "clang/StaticAnalyzer/Core/Analyses.def" 869 default: 870 llvm_unreachable("Tried to generate unknown analysis diagnostic client."); 871 } 872 } 873 874 if (Opts.AnalysisPurgeOpt != PurgeStmt) { 875 switch (Opts.AnalysisPurgeOpt) { 876 #define ANALYSIS_PURGE(NAME, CMDFLAG, DESC) \ 877 case NAME: \ 878 GenerateArg(Consumer, OPT_analyzer_purge, CMDFLAG); \ 879 break; 880 #include "clang/StaticAnalyzer/Core/Analyses.def" 881 default: 882 llvm_unreachable("Tried to generate unknown analysis purge mode."); 883 } 884 } 885 886 if (Opts.InliningMode != NoRedundancy) { 887 switch (Opts.InliningMode) { 888 #define ANALYSIS_INLINING_MODE(NAME, CMDFLAG, DESC) \ 889 case NAME: \ 890 GenerateArg(Consumer, OPT_analyzer_inlining_mode, CMDFLAG); \ 891 break; 892 #include "clang/StaticAnalyzer/Core/Analyses.def" 893 default: 894 llvm_unreachable("Tried to generate unknown analysis inlining mode."); 895 } 896 } 897 898 for (const auto &CP : Opts.CheckersAndPackages) { 899 OptSpecifier Opt = 900 CP.second ? OPT_analyzer_checker : OPT_analyzer_disable_checker; 901 GenerateArg(Consumer, Opt, CP.first); 902 } 903 904 AnalyzerOptions ConfigOpts; 905 parseAnalyzerConfigs(ConfigOpts, nullptr); 906 907 // Sort options by key to avoid relying on StringMap iteration order. 908 SmallVector<std::pair<StringRef, StringRef>, 4> SortedConfigOpts; 909 for (const auto &C : Opts.Config) 910 SortedConfigOpts.emplace_back(C.getKey(), C.getValue()); 911 llvm::sort(SortedConfigOpts, llvm::less_first()); 912 913 for (const auto &[Key, Value] : SortedConfigOpts) { 914 // Don't generate anything that came from parseAnalyzerConfigs. It would be 915 // redundant and may not be valid on the command line. 916 auto Entry = ConfigOpts.Config.find(Key); 917 if (Entry != ConfigOpts.Config.end() && Entry->getValue() == Value) 918 continue; 919 920 GenerateArg(Consumer, OPT_analyzer_config, Key + "=" + Value); 921 } 922 923 // Nothing to generate for FullCompilerInvocation. 924 } 925 926 static bool ParseAnalyzerArgs(AnalyzerOptions &Opts, ArgList &Args, 927 DiagnosticsEngine &Diags) { 928 unsigned NumErrorsBefore = Diags.getNumErrors(); 929 930 AnalyzerOptions *AnalyzerOpts = &Opts; 931 932 #define ANALYZER_OPTION_WITH_MARSHALLING(...) \ 933 PARSE_OPTION_WITH_MARSHALLING(Args, Diags, __VA_ARGS__) 934 #include "clang/Driver/Options.inc" 935 #undef ANALYZER_OPTION_WITH_MARSHALLING 936 937 if (Arg *A = Args.getLastArg(OPT_analyzer_constraints)) { 938 StringRef Name = A->getValue(); 939 AnalysisConstraints Value = llvm::StringSwitch<AnalysisConstraints>(Name) 940 #define ANALYSIS_CONSTRAINTS(NAME, CMDFLAG, DESC, CREATFN) \ 941 .Case(CMDFLAG, NAME##Model) 942 #include "clang/StaticAnalyzer/Core/Analyses.def" 943 .Default(NumConstraints); 944 if (Value == NumConstraints) { 945 Diags.Report(diag::err_drv_invalid_value) 946 << A->getAsString(Args) << Name; 947 } else { 948 #ifndef LLVM_WITH_Z3 949 if (Value == AnalysisConstraints::Z3ConstraintsModel) { 950 Diags.Report(diag::err_analyzer_not_built_with_z3); 951 } 952 #endif // LLVM_WITH_Z3 953 Opts.AnalysisConstraintsOpt = Value; 954 } 955 } 956 957 if (Arg *A = Args.getLastArg(OPT_analyzer_output)) { 958 StringRef Name = A->getValue(); 959 AnalysisDiagClients Value = llvm::StringSwitch<AnalysisDiagClients>(Name) 960 #define ANALYSIS_DIAGNOSTICS(NAME, CMDFLAG, DESC, CREATFN) \ 961 .Case(CMDFLAG, PD_##NAME) 962 #include "clang/StaticAnalyzer/Core/Analyses.def" 963 .Default(NUM_ANALYSIS_DIAG_CLIENTS); 964 if (Value == NUM_ANALYSIS_DIAG_CLIENTS) { 965 Diags.Report(diag::err_drv_invalid_value) 966 << A->getAsString(Args) << Name; 967 } else { 968 Opts.AnalysisDiagOpt = Value; 969 } 970 } 971 972 if (Arg *A = Args.getLastArg(OPT_analyzer_purge)) { 973 StringRef Name = A->getValue(); 974 AnalysisPurgeMode Value = llvm::StringSwitch<AnalysisPurgeMode>(Name) 975 #define ANALYSIS_PURGE(NAME, CMDFLAG, DESC) \ 976 .Case(CMDFLAG, NAME) 977 #include "clang/StaticAnalyzer/Core/Analyses.def" 978 .Default(NumPurgeModes); 979 if (Value == NumPurgeModes) { 980 Diags.Report(diag::err_drv_invalid_value) 981 << A->getAsString(Args) << Name; 982 } else { 983 Opts.AnalysisPurgeOpt = Value; 984 } 985 } 986 987 if (Arg *A = Args.getLastArg(OPT_analyzer_inlining_mode)) { 988 StringRef Name = A->getValue(); 989 AnalysisInliningMode Value = llvm::StringSwitch<AnalysisInliningMode>(Name) 990 #define ANALYSIS_INLINING_MODE(NAME, CMDFLAG, DESC) \ 991 .Case(CMDFLAG, NAME) 992 #include "clang/StaticAnalyzer/Core/Analyses.def" 993 .Default(NumInliningModes); 994 if (Value == NumInliningModes) { 995 Diags.Report(diag::err_drv_invalid_value) 996 << A->getAsString(Args) << Name; 997 } else { 998 Opts.InliningMode = Value; 999 } 1000 } 1001 1002 Opts.CheckersAndPackages.clear(); 1003 for (const Arg *A : 1004 Args.filtered(OPT_analyzer_checker, OPT_analyzer_disable_checker)) { 1005 A->claim(); 1006 bool IsEnabled = A->getOption().getID() == OPT_analyzer_checker; 1007 // We can have a list of comma separated checker names, e.g: 1008 // '-analyzer-checker=cocoa,unix' 1009 StringRef CheckerAndPackageList = A->getValue(); 1010 SmallVector<StringRef, 16> CheckersAndPackages; 1011 CheckerAndPackageList.split(CheckersAndPackages, ","); 1012 for (const StringRef &CheckerOrPackage : CheckersAndPackages) 1013 Opts.CheckersAndPackages.emplace_back(std::string(CheckerOrPackage), 1014 IsEnabled); 1015 } 1016 1017 // Go through the analyzer configuration options. 1018 for (const auto *A : Args.filtered(OPT_analyzer_config)) { 1019 1020 // We can have a list of comma separated config names, e.g: 1021 // '-analyzer-config key1=val1,key2=val2' 1022 StringRef configList = A->getValue(); 1023 SmallVector<StringRef, 4> configVals; 1024 configList.split(configVals, ","); 1025 for (const auto &configVal : configVals) { 1026 StringRef key, val; 1027 std::tie(key, val) = configVal.split("="); 1028 if (val.empty()) { 1029 Diags.Report(SourceLocation(), 1030 diag::err_analyzer_config_no_value) << configVal; 1031 break; 1032 } 1033 if (val.contains('=')) { 1034 Diags.Report(SourceLocation(), 1035 diag::err_analyzer_config_multiple_values) 1036 << configVal; 1037 break; 1038 } 1039 1040 // TODO: Check checker options too, possibly in CheckerRegistry. 1041 // Leave unknown non-checker configs unclaimed. 1042 if (!key.contains(":") && Opts.isUnknownAnalyzerConfig(key)) { 1043 if (Opts.ShouldEmitErrorsOnInvalidConfigValue) 1044 Diags.Report(diag::err_analyzer_config_unknown) << key; 1045 continue; 1046 } 1047 1048 A->claim(); 1049 Opts.Config[key] = std::string(val); 1050 } 1051 } 1052 1053 if (Opts.ShouldEmitErrorsOnInvalidConfigValue) 1054 parseAnalyzerConfigs(Opts, &Diags); 1055 else 1056 parseAnalyzerConfigs(Opts, nullptr); 1057 1058 llvm::raw_string_ostream os(Opts.FullCompilerInvocation); 1059 for (unsigned i = 0; i < Args.getNumInputArgStrings(); ++i) { 1060 if (i != 0) 1061 os << " "; 1062 os << Args.getArgString(i); 1063 } 1064 os.flush(); 1065 1066 return Diags.getNumErrors() == NumErrorsBefore; 1067 } 1068 1069 static StringRef getStringOption(AnalyzerOptions::ConfigTable &Config, 1070 StringRef OptionName, StringRef DefaultVal) { 1071 return Config.insert({OptionName, std::string(DefaultVal)}).first->second; 1072 } 1073 1074 static void initOption(AnalyzerOptions::ConfigTable &Config, 1075 DiagnosticsEngine *Diags, 1076 StringRef &OptionField, StringRef Name, 1077 StringRef DefaultVal) { 1078 // String options may be known to invalid (e.g. if the expected string is a 1079 // file name, but the file does not exist), those will have to be checked in 1080 // parseConfigs. 1081 OptionField = getStringOption(Config, Name, DefaultVal); 1082 } 1083 1084 static void initOption(AnalyzerOptions::ConfigTable &Config, 1085 DiagnosticsEngine *Diags, 1086 bool &OptionField, StringRef Name, bool DefaultVal) { 1087 auto PossiblyInvalidVal = 1088 llvm::StringSwitch<std::optional<bool>>( 1089 getStringOption(Config, Name, (DefaultVal ? "true" : "false"))) 1090 .Case("true", true) 1091 .Case("false", false) 1092 .Default(std::nullopt); 1093 1094 if (!PossiblyInvalidVal) { 1095 if (Diags) 1096 Diags->Report(diag::err_analyzer_config_invalid_input) 1097 << Name << "a boolean"; 1098 else 1099 OptionField = DefaultVal; 1100 } else 1101 OptionField = *PossiblyInvalidVal; 1102 } 1103 1104 static void initOption(AnalyzerOptions::ConfigTable &Config, 1105 DiagnosticsEngine *Diags, 1106 unsigned &OptionField, StringRef Name, 1107 unsigned DefaultVal) { 1108 1109 OptionField = DefaultVal; 1110 bool HasFailed = getStringOption(Config, Name, std::to_string(DefaultVal)) 1111 .getAsInteger(0, OptionField); 1112 if (Diags && HasFailed) 1113 Diags->Report(diag::err_analyzer_config_invalid_input) 1114 << Name << "an unsigned"; 1115 } 1116 1117 static void parseAnalyzerConfigs(AnalyzerOptions &AnOpts, 1118 DiagnosticsEngine *Diags) { 1119 // TODO: There's no need to store the entire configtable, it'd be plenty 1120 // enough to store checker options. 1121 1122 #define ANALYZER_OPTION(TYPE, NAME, CMDFLAG, DESC, DEFAULT_VAL) \ 1123 initOption(AnOpts.Config, Diags, AnOpts.NAME, CMDFLAG, DEFAULT_VAL); 1124 #define ANALYZER_OPTION_DEPENDS_ON_USER_MODE(...) 1125 #include "clang/StaticAnalyzer/Core/AnalyzerOptions.def" 1126 1127 assert(AnOpts.UserMode == "shallow" || AnOpts.UserMode == "deep"); 1128 const bool InShallowMode = AnOpts.UserMode == "shallow"; 1129 1130 #define ANALYZER_OPTION(...) 1131 #define ANALYZER_OPTION_DEPENDS_ON_USER_MODE(TYPE, NAME, CMDFLAG, DESC, \ 1132 SHALLOW_VAL, DEEP_VAL) \ 1133 initOption(AnOpts.Config, Diags, AnOpts.NAME, CMDFLAG, \ 1134 InShallowMode ? SHALLOW_VAL : DEEP_VAL); 1135 #include "clang/StaticAnalyzer/Core/AnalyzerOptions.def" 1136 1137 // At this point, AnalyzerOptions is configured. Let's validate some options. 1138 1139 // FIXME: Here we try to validate the silenced checkers or packages are valid. 1140 // The current approach only validates the registered checkers which does not 1141 // contain the runtime enabled checkers and optimally we would validate both. 1142 if (!AnOpts.RawSilencedCheckersAndPackages.empty()) { 1143 std::vector<StringRef> Checkers = 1144 AnOpts.getRegisteredCheckers(/*IncludeExperimental=*/true); 1145 std::vector<StringRef> Packages = 1146 AnOpts.getRegisteredPackages(/*IncludeExperimental=*/true); 1147 1148 SmallVector<StringRef, 16> CheckersAndPackages; 1149 AnOpts.RawSilencedCheckersAndPackages.split(CheckersAndPackages, ";"); 1150 1151 for (const StringRef &CheckerOrPackage : CheckersAndPackages) { 1152 if (Diags) { 1153 bool IsChecker = CheckerOrPackage.contains('.'); 1154 bool IsValidName = IsChecker 1155 ? llvm::is_contained(Checkers, CheckerOrPackage) 1156 : llvm::is_contained(Packages, CheckerOrPackage); 1157 1158 if (!IsValidName) 1159 Diags->Report(diag::err_unknown_analyzer_checker_or_package) 1160 << CheckerOrPackage; 1161 } 1162 1163 AnOpts.SilencedCheckersAndPackages.emplace_back(CheckerOrPackage); 1164 } 1165 } 1166 1167 if (!Diags) 1168 return; 1169 1170 if (AnOpts.ShouldTrackConditionsDebug && !AnOpts.ShouldTrackConditions) 1171 Diags->Report(diag::err_analyzer_config_invalid_input) 1172 << "track-conditions-debug" << "'track-conditions' to also be enabled"; 1173 1174 if (!AnOpts.CTUDir.empty() && !llvm::sys::fs::is_directory(AnOpts.CTUDir)) 1175 Diags->Report(diag::err_analyzer_config_invalid_input) << "ctu-dir" 1176 << "a filename"; 1177 1178 if (!AnOpts.ModelPath.empty() && 1179 !llvm::sys::fs::is_directory(AnOpts.ModelPath)) 1180 Diags->Report(diag::err_analyzer_config_invalid_input) << "model-path" 1181 << "a filename"; 1182 } 1183 1184 /// Generate a remark argument. This is an inverse of `ParseOptimizationRemark`. 1185 static void 1186 GenerateOptimizationRemark(ArgumentConsumer Consumer, OptSpecifier OptEQ, 1187 StringRef Name, 1188 const CodeGenOptions::OptRemark &Remark) { 1189 if (Remark.hasValidPattern()) { 1190 GenerateArg(Consumer, OptEQ, Remark.Pattern); 1191 } else if (Remark.Kind == CodeGenOptions::RK_Enabled) { 1192 GenerateArg(Consumer, OPT_R_Joined, Name); 1193 } else if (Remark.Kind == CodeGenOptions::RK_Disabled) { 1194 GenerateArg(Consumer, OPT_R_Joined, StringRef("no-") + Name); 1195 } 1196 } 1197 1198 /// Parse a remark command line argument. It may be missing, disabled/enabled by 1199 /// '-R[no-]group' or specified with a regular expression by '-Rgroup=regexp'. 1200 /// On top of that, it can be disabled/enabled globally by '-R[no-]everything'. 1201 static CodeGenOptions::OptRemark 1202 ParseOptimizationRemark(DiagnosticsEngine &Diags, ArgList &Args, 1203 OptSpecifier OptEQ, StringRef Name) { 1204 CodeGenOptions::OptRemark Result; 1205 1206 auto InitializeResultPattern = [&Diags, &Args, &Result](const Arg *A, 1207 StringRef Pattern) { 1208 Result.Pattern = Pattern.str(); 1209 1210 std::string RegexError; 1211 Result.Regex = std::make_shared<llvm::Regex>(Result.Pattern); 1212 if (!Result.Regex->isValid(RegexError)) { 1213 Diags.Report(diag::err_drv_optimization_remark_pattern) 1214 << RegexError << A->getAsString(Args); 1215 return false; 1216 } 1217 1218 return true; 1219 }; 1220 1221 for (Arg *A : Args) { 1222 if (A->getOption().matches(OPT_R_Joined)) { 1223 StringRef Value = A->getValue(); 1224 1225 if (Value == Name) 1226 Result.Kind = CodeGenOptions::RK_Enabled; 1227 else if (Value == "everything") 1228 Result.Kind = CodeGenOptions::RK_EnabledEverything; 1229 else if (Value.split('-') == std::make_pair(StringRef("no"), Name)) 1230 Result.Kind = CodeGenOptions::RK_Disabled; 1231 else if (Value == "no-everything") 1232 Result.Kind = CodeGenOptions::RK_DisabledEverything; 1233 else 1234 continue; 1235 1236 if (Result.Kind == CodeGenOptions::RK_Disabled || 1237 Result.Kind == CodeGenOptions::RK_DisabledEverything) { 1238 Result.Pattern = ""; 1239 Result.Regex = nullptr; 1240 } else { 1241 InitializeResultPattern(A, ".*"); 1242 } 1243 } else if (A->getOption().matches(OptEQ)) { 1244 Result.Kind = CodeGenOptions::RK_WithPattern; 1245 if (!InitializeResultPattern(A, A->getValue())) 1246 return CodeGenOptions::OptRemark(); 1247 } 1248 } 1249 1250 return Result; 1251 } 1252 1253 static bool parseDiagnosticLevelMask(StringRef FlagName, 1254 const std::vector<std::string> &Levels, 1255 DiagnosticsEngine &Diags, 1256 DiagnosticLevelMask &M) { 1257 bool Success = true; 1258 for (const auto &Level : Levels) { 1259 DiagnosticLevelMask const PM = 1260 llvm::StringSwitch<DiagnosticLevelMask>(Level) 1261 .Case("note", DiagnosticLevelMask::Note) 1262 .Case("remark", DiagnosticLevelMask::Remark) 1263 .Case("warning", DiagnosticLevelMask::Warning) 1264 .Case("error", DiagnosticLevelMask::Error) 1265 .Default(DiagnosticLevelMask::None); 1266 if (PM == DiagnosticLevelMask::None) { 1267 Success = false; 1268 Diags.Report(diag::err_drv_invalid_value) << FlagName << Level; 1269 } 1270 M = M | PM; 1271 } 1272 return Success; 1273 } 1274 1275 static void parseSanitizerKinds(StringRef FlagName, 1276 const std::vector<std::string> &Sanitizers, 1277 DiagnosticsEngine &Diags, SanitizerSet &S) { 1278 for (const auto &Sanitizer : Sanitizers) { 1279 SanitizerMask K = parseSanitizerValue(Sanitizer, /*AllowGroups=*/false); 1280 if (K == SanitizerMask()) 1281 Diags.Report(diag::err_drv_invalid_value) << FlagName << Sanitizer; 1282 else 1283 S.set(K, true); 1284 } 1285 } 1286 1287 static SmallVector<StringRef, 4> serializeSanitizerKinds(SanitizerSet S) { 1288 SmallVector<StringRef, 4> Values; 1289 serializeSanitizerSet(S, Values); 1290 return Values; 1291 } 1292 1293 static void parseXRayInstrumentationBundle(StringRef FlagName, StringRef Bundle, 1294 ArgList &Args, DiagnosticsEngine &D, 1295 XRayInstrSet &S) { 1296 llvm::SmallVector<StringRef, 2> BundleParts; 1297 llvm::SplitString(Bundle, BundleParts, ","); 1298 for (const auto &B : BundleParts) { 1299 auto Mask = parseXRayInstrValue(B); 1300 if (Mask == XRayInstrKind::None) 1301 if (B != "none") 1302 D.Report(diag::err_drv_invalid_value) << FlagName << Bundle; 1303 else 1304 S.Mask = Mask; 1305 else if (Mask == XRayInstrKind::All) 1306 S.Mask = Mask; 1307 else 1308 S.set(Mask, true); 1309 } 1310 } 1311 1312 static std::string serializeXRayInstrumentationBundle(const XRayInstrSet &S) { 1313 llvm::SmallVector<StringRef, 2> BundleParts; 1314 serializeXRayInstrValue(S, BundleParts); 1315 std::string Buffer; 1316 llvm::raw_string_ostream OS(Buffer); 1317 llvm::interleave(BundleParts, OS, [&OS](StringRef Part) { OS << Part; }, ","); 1318 return Buffer; 1319 } 1320 1321 // Set the profile kind using fprofile-instrument-use-path. 1322 static void setPGOUseInstrumentor(CodeGenOptions &Opts, 1323 const Twine &ProfileName, 1324 llvm::vfs::FileSystem &FS, 1325 DiagnosticsEngine &Diags) { 1326 auto ReaderOrErr = llvm::IndexedInstrProfReader::create(ProfileName, FS); 1327 if (auto E = ReaderOrErr.takeError()) { 1328 unsigned DiagID = Diags.getCustomDiagID(DiagnosticsEngine::Error, 1329 "Error in reading profile %0: %1"); 1330 llvm::handleAllErrors(std::move(E), [&](const llvm::ErrorInfoBase &EI) { 1331 Diags.Report(DiagID) << ProfileName.str() << EI.message(); 1332 }); 1333 return; 1334 } 1335 std::unique_ptr<llvm::IndexedInstrProfReader> PGOReader = 1336 std::move(ReaderOrErr.get()); 1337 // Currently memprof profiles are only added at the IR level. Mark the profile 1338 // type as IR in that case as well and the subsequent matching needs to detect 1339 // which is available (might be one or both). 1340 if (PGOReader->isIRLevelProfile() || PGOReader->hasMemoryProfile()) { 1341 if (PGOReader->hasCSIRLevelProfile()) 1342 Opts.setProfileUse(CodeGenOptions::ProfileCSIRInstr); 1343 else 1344 Opts.setProfileUse(CodeGenOptions::ProfileIRInstr); 1345 } else 1346 Opts.setProfileUse(CodeGenOptions::ProfileClangInstr); 1347 } 1348 1349 void CompilerInvocation::GenerateCodeGenArgs(const CodeGenOptions &Opts, 1350 ArgumentConsumer Consumer, 1351 const llvm::Triple &T, 1352 const std::string &OutputFile, 1353 const LangOptions *LangOpts) { 1354 const CodeGenOptions &CodeGenOpts = Opts; 1355 1356 if (Opts.OptimizationLevel == 0) 1357 GenerateArg(Consumer, OPT_O0); 1358 else 1359 GenerateArg(Consumer, OPT_O, Twine(Opts.OptimizationLevel)); 1360 1361 #define CODEGEN_OPTION_WITH_MARSHALLING(...) \ 1362 GENERATE_OPTION_WITH_MARSHALLING(Consumer, __VA_ARGS__) 1363 #include "clang/Driver/Options.inc" 1364 #undef CODEGEN_OPTION_WITH_MARSHALLING 1365 1366 if (Opts.OptimizationLevel > 0) { 1367 if (Opts.Inlining == CodeGenOptions::NormalInlining) 1368 GenerateArg(Consumer, OPT_finline_functions); 1369 else if (Opts.Inlining == CodeGenOptions::OnlyHintInlining) 1370 GenerateArg(Consumer, OPT_finline_hint_functions); 1371 else if (Opts.Inlining == CodeGenOptions::OnlyAlwaysInlining) 1372 GenerateArg(Consumer, OPT_fno_inline); 1373 } 1374 1375 if (Opts.DirectAccessExternalData && LangOpts->PICLevel != 0) 1376 GenerateArg(Consumer, OPT_fdirect_access_external_data); 1377 else if (!Opts.DirectAccessExternalData && LangOpts->PICLevel == 0) 1378 GenerateArg(Consumer, OPT_fno_direct_access_external_data); 1379 1380 std::optional<StringRef> DebugInfoVal; 1381 switch (Opts.DebugInfo) { 1382 case llvm::codegenoptions::DebugLineTablesOnly: 1383 DebugInfoVal = "line-tables-only"; 1384 break; 1385 case llvm::codegenoptions::DebugDirectivesOnly: 1386 DebugInfoVal = "line-directives-only"; 1387 break; 1388 case llvm::codegenoptions::DebugInfoConstructor: 1389 DebugInfoVal = "constructor"; 1390 break; 1391 case llvm::codegenoptions::LimitedDebugInfo: 1392 DebugInfoVal = "limited"; 1393 break; 1394 case llvm::codegenoptions::FullDebugInfo: 1395 DebugInfoVal = "standalone"; 1396 break; 1397 case llvm::codegenoptions::UnusedTypeInfo: 1398 DebugInfoVal = "unused-types"; 1399 break; 1400 case llvm::codegenoptions::NoDebugInfo: // default value 1401 DebugInfoVal = std::nullopt; 1402 break; 1403 case llvm::codegenoptions::LocTrackingOnly: // implied value 1404 DebugInfoVal = std::nullopt; 1405 break; 1406 } 1407 if (DebugInfoVal) 1408 GenerateArg(Consumer, OPT_debug_info_kind_EQ, *DebugInfoVal); 1409 1410 for (const auto &Prefix : Opts.DebugPrefixMap) 1411 GenerateArg(Consumer, OPT_fdebug_prefix_map_EQ, 1412 Prefix.first + "=" + Prefix.second); 1413 1414 for (const auto &Prefix : Opts.CoveragePrefixMap) 1415 GenerateArg(Consumer, OPT_fcoverage_prefix_map_EQ, 1416 Prefix.first + "=" + Prefix.second); 1417 1418 if (Opts.NewStructPathTBAA) 1419 GenerateArg(Consumer, OPT_new_struct_path_tbaa); 1420 1421 if (Opts.OptimizeSize == 1) 1422 GenerateArg(Consumer, OPT_O, "s"); 1423 else if (Opts.OptimizeSize == 2) 1424 GenerateArg(Consumer, OPT_O, "z"); 1425 1426 // SimplifyLibCalls is set only in the absence of -fno-builtin and 1427 // -ffreestanding. We'll consider that when generating them. 1428 1429 // NoBuiltinFuncs are generated by LangOptions. 1430 1431 if (Opts.UnrollLoops && Opts.OptimizationLevel <= 1) 1432 GenerateArg(Consumer, OPT_funroll_loops); 1433 else if (!Opts.UnrollLoops && Opts.OptimizationLevel > 1) 1434 GenerateArg(Consumer, OPT_fno_unroll_loops); 1435 1436 if (!Opts.BinutilsVersion.empty()) 1437 GenerateArg(Consumer, OPT_fbinutils_version_EQ, Opts.BinutilsVersion); 1438 1439 if (Opts.DebugNameTable == 1440 static_cast<unsigned>(llvm::DICompileUnit::DebugNameTableKind::GNU)) 1441 GenerateArg(Consumer, OPT_ggnu_pubnames); 1442 else if (Opts.DebugNameTable == 1443 static_cast<unsigned>( 1444 llvm::DICompileUnit::DebugNameTableKind::Default)) 1445 GenerateArg(Consumer, OPT_gpubnames); 1446 1447 auto TNK = Opts.getDebugSimpleTemplateNames(); 1448 if (TNK != llvm::codegenoptions::DebugTemplateNamesKind::Full) { 1449 if (TNK == llvm::codegenoptions::DebugTemplateNamesKind::Simple) 1450 GenerateArg(Consumer, OPT_gsimple_template_names_EQ, "simple"); 1451 else if (TNK == llvm::codegenoptions::DebugTemplateNamesKind::Mangled) 1452 GenerateArg(Consumer, OPT_gsimple_template_names_EQ, "mangled"); 1453 } 1454 // ProfileInstrumentUsePath is marshalled automatically, no need to generate 1455 // it or PGOUseInstrumentor. 1456 1457 if (Opts.TimePasses) { 1458 if (Opts.TimePassesPerRun) 1459 GenerateArg(Consumer, OPT_ftime_report_EQ, "per-pass-run"); 1460 else 1461 GenerateArg(Consumer, OPT_ftime_report); 1462 } 1463 1464 if (Opts.PrepareForLTO && !Opts.PrepareForThinLTO) 1465 GenerateArg(Consumer, OPT_flto_EQ, "full"); 1466 1467 if (Opts.PrepareForThinLTO) 1468 GenerateArg(Consumer, OPT_flto_EQ, "thin"); 1469 1470 if (!Opts.ThinLTOIndexFile.empty()) 1471 GenerateArg(Consumer, OPT_fthinlto_index_EQ, Opts.ThinLTOIndexFile); 1472 1473 if (Opts.SaveTempsFilePrefix == OutputFile) 1474 GenerateArg(Consumer, OPT_save_temps_EQ, "obj"); 1475 1476 StringRef MemProfileBasename("memprof.profraw"); 1477 if (!Opts.MemoryProfileOutput.empty()) { 1478 if (Opts.MemoryProfileOutput == MemProfileBasename) { 1479 GenerateArg(Consumer, OPT_fmemory_profile); 1480 } else { 1481 size_t ArgLength = 1482 Opts.MemoryProfileOutput.size() - MemProfileBasename.size(); 1483 GenerateArg(Consumer, OPT_fmemory_profile_EQ, 1484 Opts.MemoryProfileOutput.substr(0, ArgLength)); 1485 } 1486 } 1487 1488 if (memcmp(Opts.CoverageVersion, "408*", 4) != 0) 1489 GenerateArg(Consumer, OPT_coverage_version_EQ, 1490 StringRef(Opts.CoverageVersion, 4)); 1491 1492 // TODO: Check if we need to generate arguments stored in CmdArgs. (Namely 1493 // '-fembed_bitcode', which does not map to any CompilerInvocation field and 1494 // won't be generated.) 1495 1496 if (Opts.XRayInstrumentationBundle.Mask != XRayInstrKind::All) { 1497 std::string InstrBundle = 1498 serializeXRayInstrumentationBundle(Opts.XRayInstrumentationBundle); 1499 if (!InstrBundle.empty()) 1500 GenerateArg(Consumer, OPT_fxray_instrumentation_bundle, InstrBundle); 1501 } 1502 1503 if (Opts.CFProtectionReturn && Opts.CFProtectionBranch) 1504 GenerateArg(Consumer, OPT_fcf_protection_EQ, "full"); 1505 else if (Opts.CFProtectionReturn) 1506 GenerateArg(Consumer, OPT_fcf_protection_EQ, "return"); 1507 else if (Opts.CFProtectionBranch) 1508 GenerateArg(Consumer, OPT_fcf_protection_EQ, "branch"); 1509 1510 if (Opts.FunctionReturnThunks) 1511 GenerateArg(Consumer, OPT_mfunction_return_EQ, "thunk-extern"); 1512 1513 for (const auto &F : Opts.LinkBitcodeFiles) { 1514 bool Builtint = F.LinkFlags == llvm::Linker::Flags::LinkOnlyNeeded && 1515 F.PropagateAttrs && F.Internalize; 1516 GenerateArg(Consumer, 1517 Builtint ? OPT_mlink_builtin_bitcode : OPT_mlink_bitcode_file, 1518 F.Filename); 1519 } 1520 1521 if (Opts.EmulatedTLS) 1522 GenerateArg(Consumer, OPT_femulated_tls); 1523 1524 if (Opts.FPDenormalMode != llvm::DenormalMode::getIEEE()) 1525 GenerateArg(Consumer, OPT_fdenormal_fp_math_EQ, Opts.FPDenormalMode.str()); 1526 1527 if ((Opts.FPDenormalMode != Opts.FP32DenormalMode) || 1528 (Opts.FP32DenormalMode != llvm::DenormalMode::getIEEE())) 1529 GenerateArg(Consumer, OPT_fdenormal_fp_math_f32_EQ, 1530 Opts.FP32DenormalMode.str()); 1531 1532 if (Opts.StructReturnConvention == CodeGenOptions::SRCK_OnStack) { 1533 OptSpecifier Opt = 1534 T.isPPC32() ? OPT_maix_struct_return : OPT_fpcc_struct_return; 1535 GenerateArg(Consumer, Opt); 1536 } else if (Opts.StructReturnConvention == CodeGenOptions::SRCK_InRegs) { 1537 OptSpecifier Opt = 1538 T.isPPC32() ? OPT_msvr4_struct_return : OPT_freg_struct_return; 1539 GenerateArg(Consumer, Opt); 1540 } 1541 1542 if (Opts.EnableAIXExtendedAltivecABI) 1543 GenerateArg(Consumer, OPT_mabi_EQ_vec_extabi); 1544 1545 if (Opts.XCOFFReadOnlyPointers) 1546 GenerateArg(Consumer, OPT_mxcoff_roptr); 1547 1548 if (!Opts.OptRecordPasses.empty()) 1549 GenerateArg(Consumer, OPT_opt_record_passes, Opts.OptRecordPasses); 1550 1551 if (!Opts.OptRecordFormat.empty()) 1552 GenerateArg(Consumer, OPT_opt_record_format, Opts.OptRecordFormat); 1553 1554 GenerateOptimizationRemark(Consumer, OPT_Rpass_EQ, "pass", 1555 Opts.OptimizationRemark); 1556 1557 GenerateOptimizationRemark(Consumer, OPT_Rpass_missed_EQ, "pass-missed", 1558 Opts.OptimizationRemarkMissed); 1559 1560 GenerateOptimizationRemark(Consumer, OPT_Rpass_analysis_EQ, "pass-analysis", 1561 Opts.OptimizationRemarkAnalysis); 1562 1563 GenerateArg(Consumer, OPT_fdiagnostics_hotness_threshold_EQ, 1564 Opts.DiagnosticsHotnessThreshold 1565 ? Twine(*Opts.DiagnosticsHotnessThreshold) 1566 : "auto"); 1567 1568 GenerateArg(Consumer, OPT_fdiagnostics_misexpect_tolerance_EQ, 1569 Twine(*Opts.DiagnosticsMisExpectTolerance)); 1570 1571 for (StringRef Sanitizer : serializeSanitizerKinds(Opts.SanitizeRecover)) 1572 GenerateArg(Consumer, OPT_fsanitize_recover_EQ, Sanitizer); 1573 1574 for (StringRef Sanitizer : serializeSanitizerKinds(Opts.SanitizeTrap)) 1575 GenerateArg(Consumer, OPT_fsanitize_trap_EQ, Sanitizer); 1576 1577 if (!Opts.EmitVersionIdentMetadata) 1578 GenerateArg(Consumer, OPT_Qn); 1579 1580 switch (Opts.FiniteLoops) { 1581 case CodeGenOptions::FiniteLoopsKind::Language: 1582 break; 1583 case CodeGenOptions::FiniteLoopsKind::Always: 1584 GenerateArg(Consumer, OPT_ffinite_loops); 1585 break; 1586 case CodeGenOptions::FiniteLoopsKind::Never: 1587 GenerateArg(Consumer, OPT_fno_finite_loops); 1588 break; 1589 } 1590 } 1591 1592 bool CompilerInvocation::ParseCodeGenArgs(CodeGenOptions &Opts, ArgList &Args, 1593 InputKind IK, 1594 DiagnosticsEngine &Diags, 1595 const llvm::Triple &T, 1596 const std::string &OutputFile, 1597 const LangOptions &LangOptsRef) { 1598 unsigned NumErrorsBefore = Diags.getNumErrors(); 1599 1600 unsigned OptimizationLevel = getOptimizationLevel(Args, IK, Diags); 1601 // TODO: This could be done in Driver 1602 unsigned MaxOptLevel = 3; 1603 if (OptimizationLevel > MaxOptLevel) { 1604 // If the optimization level is not supported, fall back on the default 1605 // optimization 1606 Diags.Report(diag::warn_drv_optimization_value) 1607 << Args.getLastArg(OPT_O)->getAsString(Args) << "-O" << MaxOptLevel; 1608 OptimizationLevel = MaxOptLevel; 1609 } 1610 Opts.OptimizationLevel = OptimizationLevel; 1611 1612 // The key paths of codegen options defined in Options.td start with 1613 // "CodeGenOpts.". Let's provide the expected variable name and type. 1614 CodeGenOptions &CodeGenOpts = Opts; 1615 // Some codegen options depend on language options. Let's provide the expected 1616 // variable name and type. 1617 const LangOptions *LangOpts = &LangOptsRef; 1618 1619 #define CODEGEN_OPTION_WITH_MARSHALLING(...) \ 1620 PARSE_OPTION_WITH_MARSHALLING(Args, Diags, __VA_ARGS__) 1621 #include "clang/Driver/Options.inc" 1622 #undef CODEGEN_OPTION_WITH_MARSHALLING 1623 1624 // At O0 we want to fully disable inlining outside of cases marked with 1625 // 'alwaysinline' that are required for correctness. 1626 if (Opts.OptimizationLevel == 0) { 1627 Opts.setInlining(CodeGenOptions::OnlyAlwaysInlining); 1628 } else if (const Arg *A = Args.getLastArg(options::OPT_finline_functions, 1629 options::OPT_finline_hint_functions, 1630 options::OPT_fno_inline_functions, 1631 options::OPT_fno_inline)) { 1632 // Explicit inlining flags can disable some or all inlining even at 1633 // optimization levels above zero. 1634 if (A->getOption().matches(options::OPT_finline_functions)) 1635 Opts.setInlining(CodeGenOptions::NormalInlining); 1636 else if (A->getOption().matches(options::OPT_finline_hint_functions)) 1637 Opts.setInlining(CodeGenOptions::OnlyHintInlining); 1638 else 1639 Opts.setInlining(CodeGenOptions::OnlyAlwaysInlining); 1640 } else { 1641 Opts.setInlining(CodeGenOptions::NormalInlining); 1642 } 1643 1644 // PIC defaults to -fno-direct-access-external-data while non-PIC defaults to 1645 // -fdirect-access-external-data. 1646 Opts.DirectAccessExternalData = 1647 Args.hasArg(OPT_fdirect_access_external_data) || 1648 (!Args.hasArg(OPT_fno_direct_access_external_data) && 1649 LangOpts->PICLevel == 0); 1650 1651 if (Arg *A = Args.getLastArg(OPT_debug_info_kind_EQ)) { 1652 unsigned Val = 1653 llvm::StringSwitch<unsigned>(A->getValue()) 1654 .Case("line-tables-only", llvm::codegenoptions::DebugLineTablesOnly) 1655 .Case("line-directives-only", 1656 llvm::codegenoptions::DebugDirectivesOnly) 1657 .Case("constructor", llvm::codegenoptions::DebugInfoConstructor) 1658 .Case("limited", llvm::codegenoptions::LimitedDebugInfo) 1659 .Case("standalone", llvm::codegenoptions::FullDebugInfo) 1660 .Case("unused-types", llvm::codegenoptions::UnusedTypeInfo) 1661 .Default(~0U); 1662 if (Val == ~0U) 1663 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) 1664 << A->getValue(); 1665 else 1666 Opts.setDebugInfo(static_cast<llvm::codegenoptions::DebugInfoKind>(Val)); 1667 } 1668 1669 // If -fuse-ctor-homing is set and limited debug info is already on, then use 1670 // constructor homing, and vice versa for -fno-use-ctor-homing. 1671 if (const Arg *A = 1672 Args.getLastArg(OPT_fuse_ctor_homing, OPT_fno_use_ctor_homing)) { 1673 if (A->getOption().matches(OPT_fuse_ctor_homing) && 1674 Opts.getDebugInfo() == llvm::codegenoptions::LimitedDebugInfo) 1675 Opts.setDebugInfo(llvm::codegenoptions::DebugInfoConstructor); 1676 if (A->getOption().matches(OPT_fno_use_ctor_homing) && 1677 Opts.getDebugInfo() == llvm::codegenoptions::DebugInfoConstructor) 1678 Opts.setDebugInfo(llvm::codegenoptions::LimitedDebugInfo); 1679 } 1680 1681 for (const auto &Arg : Args.getAllArgValues(OPT_fdebug_prefix_map_EQ)) { 1682 auto Split = StringRef(Arg).split('='); 1683 Opts.DebugPrefixMap.emplace_back(Split.first, Split.second); 1684 } 1685 1686 for (const auto &Arg : Args.getAllArgValues(OPT_fcoverage_prefix_map_EQ)) { 1687 auto Split = StringRef(Arg).split('='); 1688 Opts.CoveragePrefixMap.emplace_back(Split.first, Split.second); 1689 } 1690 1691 const llvm::Triple::ArchType DebugEntryValueArchs[] = { 1692 llvm::Triple::x86, llvm::Triple::x86_64, llvm::Triple::aarch64, 1693 llvm::Triple::arm, llvm::Triple::armeb, llvm::Triple::mips, 1694 llvm::Triple::mipsel, llvm::Triple::mips64, llvm::Triple::mips64el}; 1695 1696 if (Opts.OptimizationLevel > 0 && Opts.hasReducedDebugInfo() && 1697 llvm::is_contained(DebugEntryValueArchs, T.getArch())) 1698 Opts.EmitCallSiteInfo = true; 1699 1700 if (!Opts.EnableDIPreservationVerify && Opts.DIBugsReportFilePath.size()) { 1701 Diags.Report(diag::warn_ignoring_verify_debuginfo_preserve_export) 1702 << Opts.DIBugsReportFilePath; 1703 Opts.DIBugsReportFilePath = ""; 1704 } 1705 1706 Opts.NewStructPathTBAA = !Args.hasArg(OPT_no_struct_path_tbaa) && 1707 Args.hasArg(OPT_new_struct_path_tbaa); 1708 Opts.OptimizeSize = getOptimizationLevelSize(Args); 1709 Opts.SimplifyLibCalls = !LangOpts->NoBuiltin; 1710 if (Opts.SimplifyLibCalls) 1711 Opts.NoBuiltinFuncs = LangOpts->NoBuiltinFuncs; 1712 Opts.UnrollLoops = 1713 Args.hasFlag(OPT_funroll_loops, OPT_fno_unroll_loops, 1714 (Opts.OptimizationLevel > 1)); 1715 Opts.BinutilsVersion = 1716 std::string(Args.getLastArgValue(OPT_fbinutils_version_EQ)); 1717 1718 Opts.DebugNameTable = static_cast<unsigned>( 1719 Args.hasArg(OPT_ggnu_pubnames) 1720 ? llvm::DICompileUnit::DebugNameTableKind::GNU 1721 : Args.hasArg(OPT_gpubnames) 1722 ? llvm::DICompileUnit::DebugNameTableKind::Default 1723 : llvm::DICompileUnit::DebugNameTableKind::None); 1724 if (const Arg *A = Args.getLastArg(OPT_gsimple_template_names_EQ)) { 1725 StringRef Value = A->getValue(); 1726 if (Value != "simple" && Value != "mangled") 1727 Diags.Report(diag::err_drv_unsupported_option_argument) 1728 << A->getSpelling() << A->getValue(); 1729 Opts.setDebugSimpleTemplateNames( 1730 StringRef(A->getValue()) == "simple" 1731 ? llvm::codegenoptions::DebugTemplateNamesKind::Simple 1732 : llvm::codegenoptions::DebugTemplateNamesKind::Mangled); 1733 } 1734 1735 if (const Arg *A = Args.getLastArg(OPT_ftime_report, OPT_ftime_report_EQ)) { 1736 Opts.TimePasses = true; 1737 1738 // -ftime-report= is only for new pass manager. 1739 if (A->getOption().getID() == OPT_ftime_report_EQ) { 1740 StringRef Val = A->getValue(); 1741 if (Val == "per-pass") 1742 Opts.TimePassesPerRun = false; 1743 else if (Val == "per-pass-run") 1744 Opts.TimePassesPerRun = true; 1745 else 1746 Diags.Report(diag::err_drv_invalid_value) 1747 << A->getAsString(Args) << A->getValue(); 1748 } 1749 } 1750 1751 Opts.PrepareForLTO = false; 1752 Opts.PrepareForThinLTO = false; 1753 if (Arg *A = Args.getLastArg(OPT_flto_EQ)) { 1754 Opts.PrepareForLTO = true; 1755 StringRef S = A->getValue(); 1756 if (S == "thin") 1757 Opts.PrepareForThinLTO = true; 1758 else if (S != "full") 1759 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << S; 1760 if (Args.hasArg(OPT_funified_lto)) 1761 Opts.PrepareForThinLTO = true; 1762 } 1763 if (Arg *A = Args.getLastArg(OPT_fthinlto_index_EQ)) { 1764 if (IK.getLanguage() != Language::LLVM_IR) 1765 Diags.Report(diag::err_drv_argument_only_allowed_with) 1766 << A->getAsString(Args) << "-x ir"; 1767 Opts.ThinLTOIndexFile = 1768 std::string(Args.getLastArgValue(OPT_fthinlto_index_EQ)); 1769 } 1770 if (Arg *A = Args.getLastArg(OPT_save_temps_EQ)) 1771 Opts.SaveTempsFilePrefix = 1772 llvm::StringSwitch<std::string>(A->getValue()) 1773 .Case("obj", OutputFile) 1774 .Default(llvm::sys::path::filename(OutputFile).str()); 1775 1776 // The memory profile runtime appends the pid to make this name more unique. 1777 const char *MemProfileBasename = "memprof.profraw"; 1778 if (Args.hasArg(OPT_fmemory_profile_EQ)) { 1779 SmallString<128> Path( 1780 std::string(Args.getLastArgValue(OPT_fmemory_profile_EQ))); 1781 llvm::sys::path::append(Path, MemProfileBasename); 1782 Opts.MemoryProfileOutput = std::string(Path); 1783 } else if (Args.hasArg(OPT_fmemory_profile)) 1784 Opts.MemoryProfileOutput = MemProfileBasename; 1785 1786 memcpy(Opts.CoverageVersion, "408*", 4); 1787 if (Opts.CoverageNotesFile.size() || Opts.CoverageDataFile.size()) { 1788 if (Args.hasArg(OPT_coverage_version_EQ)) { 1789 StringRef CoverageVersion = Args.getLastArgValue(OPT_coverage_version_EQ); 1790 if (CoverageVersion.size() != 4) { 1791 Diags.Report(diag::err_drv_invalid_value) 1792 << Args.getLastArg(OPT_coverage_version_EQ)->getAsString(Args) 1793 << CoverageVersion; 1794 } else { 1795 memcpy(Opts.CoverageVersion, CoverageVersion.data(), 4); 1796 } 1797 } 1798 } 1799 // FIXME: For backend options that are not yet recorded as function 1800 // attributes in the IR, keep track of them so we can embed them in a 1801 // separate data section and use them when building the bitcode. 1802 for (const auto &A : Args) { 1803 // Do not encode output and input. 1804 if (A->getOption().getID() == options::OPT_o || 1805 A->getOption().getID() == options::OPT_INPUT || 1806 A->getOption().getID() == options::OPT_x || 1807 A->getOption().getID() == options::OPT_fembed_bitcode || 1808 A->getOption().matches(options::OPT_W_Group)) 1809 continue; 1810 ArgStringList ASL; 1811 A->render(Args, ASL); 1812 for (const auto &arg : ASL) { 1813 StringRef ArgStr(arg); 1814 Opts.CmdArgs.insert(Opts.CmdArgs.end(), ArgStr.begin(), ArgStr.end()); 1815 // using \00 to separate each commandline options. 1816 Opts.CmdArgs.push_back('\0'); 1817 } 1818 } 1819 1820 auto XRayInstrBundles = 1821 Args.getAllArgValues(OPT_fxray_instrumentation_bundle); 1822 if (XRayInstrBundles.empty()) 1823 Opts.XRayInstrumentationBundle.Mask = XRayInstrKind::All; 1824 else 1825 for (const auto &A : XRayInstrBundles) 1826 parseXRayInstrumentationBundle("-fxray-instrumentation-bundle=", A, Args, 1827 Diags, Opts.XRayInstrumentationBundle); 1828 1829 if (const Arg *A = Args.getLastArg(OPT_fcf_protection_EQ)) { 1830 StringRef Name = A->getValue(); 1831 if (Name == "full") { 1832 Opts.CFProtectionReturn = 1; 1833 Opts.CFProtectionBranch = 1; 1834 } else if (Name == "return") 1835 Opts.CFProtectionReturn = 1; 1836 else if (Name == "branch") 1837 Opts.CFProtectionBranch = 1; 1838 else if (Name != "none") 1839 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Name; 1840 } 1841 1842 if (const Arg *A = Args.getLastArg(OPT_mfunction_return_EQ)) { 1843 auto Val = llvm::StringSwitch<llvm::FunctionReturnThunksKind>(A->getValue()) 1844 .Case("keep", llvm::FunctionReturnThunksKind::Keep) 1845 .Case("thunk-extern", llvm::FunctionReturnThunksKind::Extern) 1846 .Default(llvm::FunctionReturnThunksKind::Invalid); 1847 // SystemZ might want to add support for "expolines." 1848 if (!T.isX86()) 1849 Diags.Report(diag::err_drv_argument_not_allowed_with) 1850 << A->getSpelling() << T.getTriple(); 1851 else if (Val == llvm::FunctionReturnThunksKind::Invalid) 1852 Diags.Report(diag::err_drv_invalid_value) 1853 << A->getAsString(Args) << A->getValue(); 1854 else if (Val == llvm::FunctionReturnThunksKind::Extern && 1855 Args.getLastArgValue(OPT_mcmodel_EQ).equals("large")) 1856 Diags.Report(diag::err_drv_argument_not_allowed_with) 1857 << A->getAsString(Args) 1858 << Args.getLastArg(OPT_mcmodel_EQ)->getAsString(Args); 1859 else 1860 Opts.FunctionReturnThunks = static_cast<unsigned>(Val); 1861 } 1862 1863 for (auto *A : 1864 Args.filtered(OPT_mlink_bitcode_file, OPT_mlink_builtin_bitcode)) { 1865 CodeGenOptions::BitcodeFileToLink F; 1866 F.Filename = A->getValue(); 1867 if (A->getOption().matches(OPT_mlink_builtin_bitcode)) { 1868 F.LinkFlags = llvm::Linker::Flags::LinkOnlyNeeded; 1869 // When linking CUDA bitcode, propagate function attributes so that 1870 // e.g. libdevice gets fast-math attrs if we're building with fast-math. 1871 F.PropagateAttrs = true; 1872 F.Internalize = true; 1873 } 1874 Opts.LinkBitcodeFiles.push_back(F); 1875 } 1876 1877 if (Arg *A = Args.getLastArg(OPT_ftlsmodel_EQ)) { 1878 if (T.isOSAIX()) { 1879 StringRef Name = A->getValue(); 1880 if (Name != "global-dynamic" && Name != "local-exec") 1881 Diags.Report(diag::err_aix_unsupported_tls_model) << Name; 1882 } 1883 } 1884 1885 if (Arg *A = Args.getLastArg(OPT_fdenormal_fp_math_EQ)) { 1886 StringRef Val = A->getValue(); 1887 Opts.FPDenormalMode = llvm::parseDenormalFPAttribute(Val); 1888 Opts.FP32DenormalMode = Opts.FPDenormalMode; 1889 if (!Opts.FPDenormalMode.isValid()) 1890 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Val; 1891 } 1892 1893 if (Arg *A = Args.getLastArg(OPT_fdenormal_fp_math_f32_EQ)) { 1894 StringRef Val = A->getValue(); 1895 Opts.FP32DenormalMode = llvm::parseDenormalFPAttribute(Val); 1896 if (!Opts.FP32DenormalMode.isValid()) 1897 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Val; 1898 } 1899 1900 // X86_32 has -fppc-struct-return and -freg-struct-return. 1901 // PPC32 has -maix-struct-return and -msvr4-struct-return. 1902 if (Arg *A = 1903 Args.getLastArg(OPT_fpcc_struct_return, OPT_freg_struct_return, 1904 OPT_maix_struct_return, OPT_msvr4_struct_return)) { 1905 // TODO: We might want to consider enabling these options on AIX in the 1906 // future. 1907 if (T.isOSAIX()) 1908 Diags.Report(diag::err_drv_unsupported_opt_for_target) 1909 << A->getSpelling() << T.str(); 1910 1911 const Option &O = A->getOption(); 1912 if (O.matches(OPT_fpcc_struct_return) || 1913 O.matches(OPT_maix_struct_return)) { 1914 Opts.setStructReturnConvention(CodeGenOptions::SRCK_OnStack); 1915 } else { 1916 assert(O.matches(OPT_freg_struct_return) || 1917 O.matches(OPT_msvr4_struct_return)); 1918 Opts.setStructReturnConvention(CodeGenOptions::SRCK_InRegs); 1919 } 1920 } 1921 1922 if (Arg *A = Args.getLastArg(OPT_mxcoff_roptr)) { 1923 if (!T.isOSAIX()) 1924 Diags.Report(diag::err_drv_unsupported_opt_for_target) 1925 << A->getSpelling() << T.str(); 1926 1927 // Since the storage mapping class is specified per csect, 1928 // without using data sections, it is less effective to use read-only 1929 // pointers. Using read-only pointers may cause other RO variables in the 1930 // same csect to become RW when the linker acts upon `-bforceimprw`; 1931 // therefore, we require that separate data sections 1932 // are used when `-mxcoff-roptr` is in effect. We respect the setting of 1933 // data-sections since we have not found reasons to do otherwise that 1934 // overcome the user surprise of not respecting the setting. 1935 if (!Args.hasFlag(OPT_fdata_sections, OPT_fno_data_sections, false)) 1936 Diags.Report(diag::err_roptr_requires_data_sections); 1937 1938 Opts.XCOFFReadOnlyPointers = true; 1939 } 1940 1941 if (Arg *A = Args.getLastArg(OPT_mabi_EQ_quadword_atomics)) { 1942 if (!T.isOSAIX() || T.isPPC32()) 1943 Diags.Report(diag::err_drv_unsupported_opt_for_target) 1944 << A->getSpelling() << T.str(); 1945 } 1946 1947 bool NeedLocTracking = false; 1948 1949 if (!Opts.OptRecordFile.empty()) 1950 NeedLocTracking = true; 1951 1952 if (Arg *A = Args.getLastArg(OPT_opt_record_passes)) { 1953 Opts.OptRecordPasses = A->getValue(); 1954 NeedLocTracking = true; 1955 } 1956 1957 if (Arg *A = Args.getLastArg(OPT_opt_record_format)) { 1958 Opts.OptRecordFormat = A->getValue(); 1959 NeedLocTracking = true; 1960 } 1961 1962 Opts.OptimizationRemark = 1963 ParseOptimizationRemark(Diags, Args, OPT_Rpass_EQ, "pass"); 1964 1965 Opts.OptimizationRemarkMissed = 1966 ParseOptimizationRemark(Diags, Args, OPT_Rpass_missed_EQ, "pass-missed"); 1967 1968 Opts.OptimizationRemarkAnalysis = ParseOptimizationRemark( 1969 Diags, Args, OPT_Rpass_analysis_EQ, "pass-analysis"); 1970 1971 NeedLocTracking |= Opts.OptimizationRemark.hasValidPattern() || 1972 Opts.OptimizationRemarkMissed.hasValidPattern() || 1973 Opts.OptimizationRemarkAnalysis.hasValidPattern(); 1974 1975 bool UsingSampleProfile = !Opts.SampleProfileFile.empty(); 1976 bool UsingProfile = 1977 UsingSampleProfile || !Opts.ProfileInstrumentUsePath.empty(); 1978 1979 if (Opts.DiagnosticsWithHotness && !UsingProfile && 1980 // An IR file will contain PGO as metadata 1981 IK.getLanguage() != Language::LLVM_IR) 1982 Diags.Report(diag::warn_drv_diagnostics_hotness_requires_pgo) 1983 << "-fdiagnostics-show-hotness"; 1984 1985 // Parse remarks hotness threshold. Valid value is either integer or 'auto'. 1986 if (auto *arg = 1987 Args.getLastArg(options::OPT_fdiagnostics_hotness_threshold_EQ)) { 1988 auto ResultOrErr = 1989 llvm::remarks::parseHotnessThresholdOption(arg->getValue()); 1990 1991 if (!ResultOrErr) { 1992 Diags.Report(diag::err_drv_invalid_diagnotics_hotness_threshold) 1993 << "-fdiagnostics-hotness-threshold="; 1994 } else { 1995 Opts.DiagnosticsHotnessThreshold = *ResultOrErr; 1996 if ((!Opts.DiagnosticsHotnessThreshold || 1997 *Opts.DiagnosticsHotnessThreshold > 0) && 1998 !UsingProfile) 1999 Diags.Report(diag::warn_drv_diagnostics_hotness_requires_pgo) 2000 << "-fdiagnostics-hotness-threshold="; 2001 } 2002 } 2003 2004 if (auto *arg = 2005 Args.getLastArg(options::OPT_fdiagnostics_misexpect_tolerance_EQ)) { 2006 auto ResultOrErr = parseToleranceOption(arg->getValue()); 2007 2008 if (!ResultOrErr) { 2009 Diags.Report(diag::err_drv_invalid_diagnotics_misexpect_tolerance) 2010 << "-fdiagnostics-misexpect-tolerance="; 2011 } else { 2012 Opts.DiagnosticsMisExpectTolerance = *ResultOrErr; 2013 if ((!Opts.DiagnosticsMisExpectTolerance || 2014 *Opts.DiagnosticsMisExpectTolerance > 0) && 2015 !UsingProfile) 2016 Diags.Report(diag::warn_drv_diagnostics_misexpect_requires_pgo) 2017 << "-fdiagnostics-misexpect-tolerance="; 2018 } 2019 } 2020 2021 // If the user requested to use a sample profile for PGO, then the 2022 // backend will need to track source location information so the profile 2023 // can be incorporated into the IR. 2024 if (UsingSampleProfile) 2025 NeedLocTracking = true; 2026 2027 if (!Opts.StackUsageOutput.empty()) 2028 NeedLocTracking = true; 2029 2030 // If the user requested a flag that requires source locations available in 2031 // the backend, make sure that the backend tracks source location information. 2032 if (NeedLocTracking && 2033 Opts.getDebugInfo() == llvm::codegenoptions::NoDebugInfo) 2034 Opts.setDebugInfo(llvm::codegenoptions::LocTrackingOnly); 2035 2036 // Parse -fsanitize-recover= arguments. 2037 // FIXME: Report unrecoverable sanitizers incorrectly specified here. 2038 parseSanitizerKinds("-fsanitize-recover=", 2039 Args.getAllArgValues(OPT_fsanitize_recover_EQ), Diags, 2040 Opts.SanitizeRecover); 2041 parseSanitizerKinds("-fsanitize-trap=", 2042 Args.getAllArgValues(OPT_fsanitize_trap_EQ), Diags, 2043 Opts.SanitizeTrap); 2044 2045 Opts.EmitVersionIdentMetadata = Args.hasFlag(OPT_Qy, OPT_Qn, true); 2046 2047 if (Args.hasArg(options::OPT_ffinite_loops)) 2048 Opts.FiniteLoops = CodeGenOptions::FiniteLoopsKind::Always; 2049 else if (Args.hasArg(options::OPT_fno_finite_loops)) 2050 Opts.FiniteLoops = CodeGenOptions::FiniteLoopsKind::Never; 2051 2052 Opts.EmitIEEENaNCompliantInsts = Args.hasFlag( 2053 options::OPT_mamdgpu_ieee, options::OPT_mno_amdgpu_ieee, true); 2054 if (!Opts.EmitIEEENaNCompliantInsts && !LangOptsRef.NoHonorNaNs) 2055 Diags.Report(diag::err_drv_amdgpu_ieee_without_no_honor_nans); 2056 2057 return Diags.getNumErrors() == NumErrorsBefore; 2058 } 2059 2060 static void GenerateDependencyOutputArgs(const DependencyOutputOptions &Opts, 2061 ArgumentConsumer Consumer) { 2062 const DependencyOutputOptions &DependencyOutputOpts = Opts; 2063 #define DEPENDENCY_OUTPUT_OPTION_WITH_MARSHALLING(...) \ 2064 GENERATE_OPTION_WITH_MARSHALLING(Consumer, __VA_ARGS__) 2065 #include "clang/Driver/Options.inc" 2066 #undef DEPENDENCY_OUTPUT_OPTION_WITH_MARSHALLING 2067 2068 if (Opts.ShowIncludesDest != ShowIncludesDestination::None) 2069 GenerateArg(Consumer, OPT_show_includes); 2070 2071 for (const auto &Dep : Opts.ExtraDeps) { 2072 switch (Dep.second) { 2073 case EDK_SanitizeIgnorelist: 2074 // Sanitizer ignorelist arguments are generated from LanguageOptions. 2075 continue; 2076 case EDK_ModuleFile: 2077 // Module file arguments are generated from FrontendOptions and 2078 // HeaderSearchOptions. 2079 continue; 2080 case EDK_ProfileList: 2081 // Profile list arguments are generated from LanguageOptions via the 2082 // marshalling infrastructure. 2083 continue; 2084 case EDK_DepFileEntry: 2085 GenerateArg(Consumer, OPT_fdepfile_entry, Dep.first); 2086 break; 2087 } 2088 } 2089 } 2090 2091 static bool ParseDependencyOutputArgs(DependencyOutputOptions &Opts, 2092 ArgList &Args, DiagnosticsEngine &Diags, 2093 frontend::ActionKind Action, 2094 bool ShowLineMarkers) { 2095 unsigned NumErrorsBefore = Diags.getNumErrors(); 2096 2097 DependencyOutputOptions &DependencyOutputOpts = Opts; 2098 #define DEPENDENCY_OUTPUT_OPTION_WITH_MARSHALLING(...) \ 2099 PARSE_OPTION_WITH_MARSHALLING(Args, Diags, __VA_ARGS__) 2100 #include "clang/Driver/Options.inc" 2101 #undef DEPENDENCY_OUTPUT_OPTION_WITH_MARSHALLING 2102 2103 if (Args.hasArg(OPT_show_includes)) { 2104 // Writing both /showIncludes and preprocessor output to stdout 2105 // would produce interleaved output, so use stderr for /showIncludes. 2106 // This behaves the same as cl.exe, when /E, /EP or /P are passed. 2107 if (Action == frontend::PrintPreprocessedInput || !ShowLineMarkers) 2108 Opts.ShowIncludesDest = ShowIncludesDestination::Stderr; 2109 else 2110 Opts.ShowIncludesDest = ShowIncludesDestination::Stdout; 2111 } else { 2112 Opts.ShowIncludesDest = ShowIncludesDestination::None; 2113 } 2114 2115 // Add sanitizer ignorelists as extra dependencies. 2116 // They won't be discovered by the regular preprocessor, so 2117 // we let make / ninja to know about this implicit dependency. 2118 if (!Args.hasArg(OPT_fno_sanitize_ignorelist)) { 2119 for (const auto *A : Args.filtered(OPT_fsanitize_ignorelist_EQ)) { 2120 StringRef Val = A->getValue(); 2121 if (!Val.contains('=')) 2122 Opts.ExtraDeps.emplace_back(std::string(Val), EDK_SanitizeIgnorelist); 2123 } 2124 if (Opts.IncludeSystemHeaders) { 2125 for (const auto *A : Args.filtered(OPT_fsanitize_system_ignorelist_EQ)) { 2126 StringRef Val = A->getValue(); 2127 if (!Val.contains('=')) 2128 Opts.ExtraDeps.emplace_back(std::string(Val), EDK_SanitizeIgnorelist); 2129 } 2130 } 2131 } 2132 2133 // -fprofile-list= dependencies. 2134 for (const auto &Filename : Args.getAllArgValues(OPT_fprofile_list_EQ)) 2135 Opts.ExtraDeps.emplace_back(Filename, EDK_ProfileList); 2136 2137 // Propagate the extra dependencies. 2138 for (const auto *A : Args.filtered(OPT_fdepfile_entry)) 2139 Opts.ExtraDeps.emplace_back(A->getValue(), EDK_DepFileEntry); 2140 2141 // Only the -fmodule-file=<file> form. 2142 for (const auto *A : Args.filtered(OPT_fmodule_file)) { 2143 StringRef Val = A->getValue(); 2144 if (!Val.contains('=')) 2145 Opts.ExtraDeps.emplace_back(std::string(Val), EDK_ModuleFile); 2146 } 2147 2148 // Check for invalid combinations of header-include-format 2149 // and header-include-filtering. 2150 if ((Opts.HeaderIncludeFormat == HIFMT_Textual && 2151 Opts.HeaderIncludeFiltering != HIFIL_None) || 2152 (Opts.HeaderIncludeFormat == HIFMT_JSON && 2153 Opts.HeaderIncludeFiltering != HIFIL_Only_Direct_System)) 2154 Diags.Report(diag::err_drv_print_header_env_var_combination_cc1) 2155 << Args.getLastArg(OPT_header_include_format_EQ)->getValue() 2156 << Args.getLastArg(OPT_header_include_filtering_EQ)->getValue(); 2157 2158 return Diags.getNumErrors() == NumErrorsBefore; 2159 } 2160 2161 static bool parseShowColorsArgs(const ArgList &Args, bool DefaultColor) { 2162 // Color diagnostics default to auto ("on" if terminal supports) in the driver 2163 // but default to off in cc1, needing an explicit OPT_fdiagnostics_color. 2164 // Support both clang's -f[no-]color-diagnostics and gcc's 2165 // -f[no-]diagnostics-colors[=never|always|auto]. 2166 enum { 2167 Colors_On, 2168 Colors_Off, 2169 Colors_Auto 2170 } ShowColors = DefaultColor ? Colors_Auto : Colors_Off; 2171 for (auto *A : Args) { 2172 const Option &O = A->getOption(); 2173 if (O.matches(options::OPT_fcolor_diagnostics)) { 2174 ShowColors = Colors_On; 2175 } else if (O.matches(options::OPT_fno_color_diagnostics)) { 2176 ShowColors = Colors_Off; 2177 } else if (O.matches(options::OPT_fdiagnostics_color_EQ)) { 2178 StringRef Value(A->getValue()); 2179 if (Value == "always") 2180 ShowColors = Colors_On; 2181 else if (Value == "never") 2182 ShowColors = Colors_Off; 2183 else if (Value == "auto") 2184 ShowColors = Colors_Auto; 2185 } 2186 } 2187 return ShowColors == Colors_On || 2188 (ShowColors == Colors_Auto && 2189 llvm::sys::Process::StandardErrHasColors()); 2190 } 2191 2192 static bool checkVerifyPrefixes(const std::vector<std::string> &VerifyPrefixes, 2193 DiagnosticsEngine &Diags) { 2194 bool Success = true; 2195 for (const auto &Prefix : VerifyPrefixes) { 2196 // Every prefix must start with a letter and contain only alphanumeric 2197 // characters, hyphens, and underscores. 2198 auto BadChar = llvm::find_if(Prefix, [](char C) { 2199 return !isAlphanumeric(C) && C != '-' && C != '_'; 2200 }); 2201 if (BadChar != Prefix.end() || !isLetter(Prefix[0])) { 2202 Success = false; 2203 Diags.Report(diag::err_drv_invalid_value) << "-verify=" << Prefix; 2204 Diags.Report(diag::note_drv_verify_prefix_spelling); 2205 } 2206 } 2207 return Success; 2208 } 2209 2210 static void GenerateFileSystemArgs(const FileSystemOptions &Opts, 2211 ArgumentConsumer Consumer) { 2212 const FileSystemOptions &FileSystemOpts = Opts; 2213 2214 #define FILE_SYSTEM_OPTION_WITH_MARSHALLING(...) \ 2215 GENERATE_OPTION_WITH_MARSHALLING(Consumer, __VA_ARGS__) 2216 #include "clang/Driver/Options.inc" 2217 #undef FILE_SYSTEM_OPTION_WITH_MARSHALLING 2218 } 2219 2220 static bool ParseFileSystemArgs(FileSystemOptions &Opts, const ArgList &Args, 2221 DiagnosticsEngine &Diags) { 2222 unsigned NumErrorsBefore = Diags.getNumErrors(); 2223 2224 FileSystemOptions &FileSystemOpts = Opts; 2225 2226 #define FILE_SYSTEM_OPTION_WITH_MARSHALLING(...) \ 2227 PARSE_OPTION_WITH_MARSHALLING(Args, Diags, __VA_ARGS__) 2228 #include "clang/Driver/Options.inc" 2229 #undef FILE_SYSTEM_OPTION_WITH_MARSHALLING 2230 2231 return Diags.getNumErrors() == NumErrorsBefore; 2232 } 2233 2234 static void GenerateMigratorArgs(const MigratorOptions &Opts, 2235 ArgumentConsumer Consumer) { 2236 const MigratorOptions &MigratorOpts = Opts; 2237 #define MIGRATOR_OPTION_WITH_MARSHALLING(...) \ 2238 GENERATE_OPTION_WITH_MARSHALLING(Consumer, __VA_ARGS__) 2239 #include "clang/Driver/Options.inc" 2240 #undef MIGRATOR_OPTION_WITH_MARSHALLING 2241 } 2242 2243 static bool ParseMigratorArgs(MigratorOptions &Opts, const ArgList &Args, 2244 DiagnosticsEngine &Diags) { 2245 unsigned NumErrorsBefore = Diags.getNumErrors(); 2246 2247 MigratorOptions &MigratorOpts = Opts; 2248 2249 #define MIGRATOR_OPTION_WITH_MARSHALLING(...) \ 2250 PARSE_OPTION_WITH_MARSHALLING(Args, Diags, __VA_ARGS__) 2251 #include "clang/Driver/Options.inc" 2252 #undef MIGRATOR_OPTION_WITH_MARSHALLING 2253 2254 return Diags.getNumErrors() == NumErrorsBefore; 2255 } 2256 2257 void CompilerInvocation::GenerateDiagnosticArgs(const DiagnosticOptions &Opts, 2258 ArgumentConsumer Consumer, 2259 bool DefaultDiagColor) { 2260 const DiagnosticOptions *DiagnosticOpts = &Opts; 2261 #define DIAG_OPTION_WITH_MARSHALLING(...) \ 2262 GENERATE_OPTION_WITH_MARSHALLING(Consumer, __VA_ARGS__) 2263 #include "clang/Driver/Options.inc" 2264 #undef DIAG_OPTION_WITH_MARSHALLING 2265 2266 if (!Opts.DiagnosticSerializationFile.empty()) 2267 GenerateArg(Consumer, OPT_diagnostic_serialized_file, 2268 Opts.DiagnosticSerializationFile); 2269 2270 if (Opts.ShowColors) 2271 GenerateArg(Consumer, OPT_fcolor_diagnostics); 2272 2273 if (Opts.VerifyDiagnostics && 2274 llvm::is_contained(Opts.VerifyPrefixes, "expected")) 2275 GenerateArg(Consumer, OPT_verify); 2276 2277 for (const auto &Prefix : Opts.VerifyPrefixes) 2278 if (Prefix != "expected") 2279 GenerateArg(Consumer, OPT_verify_EQ, Prefix); 2280 2281 DiagnosticLevelMask VIU = Opts.getVerifyIgnoreUnexpected(); 2282 if (VIU == DiagnosticLevelMask::None) { 2283 // This is the default, don't generate anything. 2284 } else if (VIU == DiagnosticLevelMask::All) { 2285 GenerateArg(Consumer, OPT_verify_ignore_unexpected); 2286 } else { 2287 if (static_cast<unsigned>(VIU & DiagnosticLevelMask::Note) != 0) 2288 GenerateArg(Consumer, OPT_verify_ignore_unexpected_EQ, "note"); 2289 if (static_cast<unsigned>(VIU & DiagnosticLevelMask::Remark) != 0) 2290 GenerateArg(Consumer, OPT_verify_ignore_unexpected_EQ, "remark"); 2291 if (static_cast<unsigned>(VIU & DiagnosticLevelMask::Warning) != 0) 2292 GenerateArg(Consumer, OPT_verify_ignore_unexpected_EQ, "warning"); 2293 if (static_cast<unsigned>(VIU & DiagnosticLevelMask::Error) != 0) 2294 GenerateArg(Consumer, OPT_verify_ignore_unexpected_EQ, "error"); 2295 } 2296 2297 for (const auto &Warning : Opts.Warnings) { 2298 // This option is automatically generated from UndefPrefixes. 2299 if (Warning == "undef-prefix") 2300 continue; 2301 Consumer(StringRef("-W") + Warning); 2302 } 2303 2304 for (const auto &Remark : Opts.Remarks) { 2305 // These arguments are generated from OptimizationRemark fields of 2306 // CodeGenOptions. 2307 StringRef IgnoredRemarks[] = {"pass", "no-pass", 2308 "pass-analysis", "no-pass-analysis", 2309 "pass-missed", "no-pass-missed"}; 2310 if (llvm::is_contained(IgnoredRemarks, Remark)) 2311 continue; 2312 2313 Consumer(StringRef("-R") + Remark); 2314 } 2315 } 2316 2317 std::unique_ptr<DiagnosticOptions> 2318 clang::CreateAndPopulateDiagOpts(ArrayRef<const char *> Argv) { 2319 auto DiagOpts = std::make_unique<DiagnosticOptions>(); 2320 unsigned MissingArgIndex, MissingArgCount; 2321 InputArgList Args = getDriverOptTable().ParseArgs( 2322 Argv.slice(1), MissingArgIndex, MissingArgCount); 2323 2324 bool ShowColors = true; 2325 if (std::optional<std::string> NoColor = 2326 llvm::sys::Process::GetEnv("NO_COLOR"); 2327 NoColor && !NoColor->empty()) { 2328 // If the user set the NO_COLOR environment variable, we'll honor that 2329 // unless the command line overrides it. 2330 ShowColors = false; 2331 } 2332 2333 // We ignore MissingArgCount and the return value of ParseDiagnosticArgs. 2334 // Any errors that would be diagnosed here will also be diagnosed later, 2335 // when the DiagnosticsEngine actually exists. 2336 (void)ParseDiagnosticArgs(*DiagOpts, Args, /*Diags=*/nullptr, ShowColors); 2337 return DiagOpts; 2338 } 2339 2340 bool clang::ParseDiagnosticArgs(DiagnosticOptions &Opts, ArgList &Args, 2341 DiagnosticsEngine *Diags, 2342 bool DefaultDiagColor) { 2343 std::optional<DiagnosticsEngine> IgnoringDiags; 2344 if (!Diags) { 2345 IgnoringDiags.emplace(new DiagnosticIDs(), new DiagnosticOptions(), 2346 new IgnoringDiagConsumer()); 2347 Diags = &*IgnoringDiags; 2348 } 2349 2350 unsigned NumErrorsBefore = Diags->getNumErrors(); 2351 2352 // The key paths of diagnostic options defined in Options.td start with 2353 // "DiagnosticOpts->". Let's provide the expected variable name and type. 2354 DiagnosticOptions *DiagnosticOpts = &Opts; 2355 2356 #define DIAG_OPTION_WITH_MARSHALLING(...) \ 2357 PARSE_OPTION_WITH_MARSHALLING(Args, *Diags, __VA_ARGS__) 2358 #include "clang/Driver/Options.inc" 2359 #undef DIAG_OPTION_WITH_MARSHALLING 2360 2361 llvm::sys::Process::UseANSIEscapeCodes(Opts.UseANSIEscapeCodes); 2362 2363 if (Arg *A = 2364 Args.getLastArg(OPT_diagnostic_serialized_file, OPT__serialize_diags)) 2365 Opts.DiagnosticSerializationFile = A->getValue(); 2366 Opts.ShowColors = parseShowColorsArgs(Args, DefaultDiagColor); 2367 2368 Opts.VerifyDiagnostics = Args.hasArg(OPT_verify) || Args.hasArg(OPT_verify_EQ); 2369 Opts.VerifyPrefixes = Args.getAllArgValues(OPT_verify_EQ); 2370 if (Args.hasArg(OPT_verify)) 2371 Opts.VerifyPrefixes.push_back("expected"); 2372 // Keep VerifyPrefixes in its original order for the sake of diagnostics, and 2373 // then sort it to prepare for fast lookup using std::binary_search. 2374 if (!checkVerifyPrefixes(Opts.VerifyPrefixes, *Diags)) 2375 Opts.VerifyDiagnostics = false; 2376 else 2377 llvm::sort(Opts.VerifyPrefixes); 2378 DiagnosticLevelMask DiagMask = DiagnosticLevelMask::None; 2379 parseDiagnosticLevelMask( 2380 "-verify-ignore-unexpected=", 2381 Args.getAllArgValues(OPT_verify_ignore_unexpected_EQ), *Diags, DiagMask); 2382 if (Args.hasArg(OPT_verify_ignore_unexpected)) 2383 DiagMask = DiagnosticLevelMask::All; 2384 Opts.setVerifyIgnoreUnexpected(DiagMask); 2385 if (Opts.TabStop == 0 || Opts.TabStop > DiagnosticOptions::MaxTabStop) { 2386 Diags->Report(diag::warn_ignoring_ftabstop_value) 2387 << Opts.TabStop << DiagnosticOptions::DefaultTabStop; 2388 Opts.TabStop = DiagnosticOptions::DefaultTabStop; 2389 } 2390 2391 addDiagnosticArgs(Args, OPT_W_Group, OPT_W_value_Group, Opts.Warnings); 2392 addDiagnosticArgs(Args, OPT_R_Group, OPT_R_value_Group, Opts.Remarks); 2393 2394 return Diags->getNumErrors() == NumErrorsBefore; 2395 } 2396 2397 /// Parse the argument to the -ftest-module-file-extension 2398 /// command-line argument. 2399 /// 2400 /// \returns true on error, false on success. 2401 static bool parseTestModuleFileExtensionArg(StringRef Arg, 2402 std::string &BlockName, 2403 unsigned &MajorVersion, 2404 unsigned &MinorVersion, 2405 bool &Hashed, 2406 std::string &UserInfo) { 2407 SmallVector<StringRef, 5> Args; 2408 Arg.split(Args, ':', 5); 2409 if (Args.size() < 5) 2410 return true; 2411 2412 BlockName = std::string(Args[0]); 2413 if (Args[1].getAsInteger(10, MajorVersion)) return true; 2414 if (Args[2].getAsInteger(10, MinorVersion)) return true; 2415 if (Args[3].getAsInteger(2, Hashed)) return true; 2416 if (Args.size() > 4) 2417 UserInfo = std::string(Args[4]); 2418 return false; 2419 } 2420 2421 /// Return a table that associates command line option specifiers with the 2422 /// frontend action. Note: The pair {frontend::PluginAction, OPT_plugin} is 2423 /// intentionally missing, as this case is handled separately from other 2424 /// frontend options. 2425 static const auto &getFrontendActionTable() { 2426 static const std::pair<frontend::ActionKind, unsigned> Table[] = { 2427 {frontend::ASTDeclList, OPT_ast_list}, 2428 2429 {frontend::ASTDump, OPT_ast_dump_all_EQ}, 2430 {frontend::ASTDump, OPT_ast_dump_all}, 2431 {frontend::ASTDump, OPT_ast_dump_EQ}, 2432 {frontend::ASTDump, OPT_ast_dump}, 2433 {frontend::ASTDump, OPT_ast_dump_lookups}, 2434 {frontend::ASTDump, OPT_ast_dump_decl_types}, 2435 2436 {frontend::ASTPrint, OPT_ast_print}, 2437 {frontend::ASTView, OPT_ast_view}, 2438 {frontend::DumpCompilerOptions, OPT_compiler_options_dump}, 2439 {frontend::DumpRawTokens, OPT_dump_raw_tokens}, 2440 {frontend::DumpTokens, OPT_dump_tokens}, 2441 {frontend::EmitAssembly, OPT_S}, 2442 {frontend::EmitBC, OPT_emit_llvm_bc}, 2443 {frontend::EmitHTML, OPT_emit_html}, 2444 {frontend::EmitLLVM, OPT_emit_llvm}, 2445 {frontend::EmitLLVMOnly, OPT_emit_llvm_only}, 2446 {frontend::EmitCodeGenOnly, OPT_emit_codegen_only}, 2447 {frontend::EmitObj, OPT_emit_obj}, 2448 {frontend::ExtractAPI, OPT_extract_api}, 2449 2450 {frontend::FixIt, OPT_fixit_EQ}, 2451 {frontend::FixIt, OPT_fixit}, 2452 2453 {frontend::GenerateModule, OPT_emit_module}, 2454 {frontend::GenerateModuleInterface, OPT_emit_module_interface}, 2455 {frontend::GenerateHeaderUnit, OPT_emit_header_unit}, 2456 {frontend::GeneratePCH, OPT_emit_pch}, 2457 {frontend::GenerateInterfaceStubs, OPT_emit_interface_stubs}, 2458 {frontend::InitOnly, OPT_init_only}, 2459 {frontend::ParseSyntaxOnly, OPT_fsyntax_only}, 2460 {frontend::ModuleFileInfo, OPT_module_file_info}, 2461 {frontend::VerifyPCH, OPT_verify_pch}, 2462 {frontend::PrintPreamble, OPT_print_preamble}, 2463 {frontend::PrintPreprocessedInput, OPT_E}, 2464 {frontend::TemplightDump, OPT_templight_dump}, 2465 {frontend::RewriteMacros, OPT_rewrite_macros}, 2466 {frontend::RewriteObjC, OPT_rewrite_objc}, 2467 {frontend::RewriteTest, OPT_rewrite_test}, 2468 {frontend::RunAnalysis, OPT_analyze}, 2469 {frontend::MigrateSource, OPT_migrate}, 2470 {frontend::RunPreprocessorOnly, OPT_Eonly}, 2471 {frontend::PrintDependencyDirectivesSourceMinimizerOutput, 2472 OPT_print_dependency_directives_minimized_source}, 2473 }; 2474 2475 return Table; 2476 } 2477 2478 /// Maps command line option to frontend action. 2479 static std::optional<frontend::ActionKind> 2480 getFrontendAction(OptSpecifier &Opt) { 2481 for (const auto &ActionOpt : getFrontendActionTable()) 2482 if (ActionOpt.second == Opt.getID()) 2483 return ActionOpt.first; 2484 2485 return std::nullopt; 2486 } 2487 2488 /// Maps frontend action to command line option. 2489 static std::optional<OptSpecifier> 2490 getProgramActionOpt(frontend::ActionKind ProgramAction) { 2491 for (const auto &ActionOpt : getFrontendActionTable()) 2492 if (ActionOpt.first == ProgramAction) 2493 return OptSpecifier(ActionOpt.second); 2494 2495 return std::nullopt; 2496 } 2497 2498 static void GenerateFrontendArgs(const FrontendOptions &Opts, 2499 ArgumentConsumer Consumer, bool IsHeader) { 2500 const FrontendOptions &FrontendOpts = Opts; 2501 #define FRONTEND_OPTION_WITH_MARSHALLING(...) \ 2502 GENERATE_OPTION_WITH_MARSHALLING(Consumer, __VA_ARGS__) 2503 #include "clang/Driver/Options.inc" 2504 #undef FRONTEND_OPTION_WITH_MARSHALLING 2505 2506 std::optional<OptSpecifier> ProgramActionOpt = 2507 getProgramActionOpt(Opts.ProgramAction); 2508 2509 // Generating a simple flag covers most frontend actions. 2510 std::function<void()> GenerateProgramAction = [&]() { 2511 GenerateArg(Consumer, *ProgramActionOpt); 2512 }; 2513 2514 if (!ProgramActionOpt) { 2515 // PluginAction is the only program action handled separately. 2516 assert(Opts.ProgramAction == frontend::PluginAction && 2517 "Frontend action without option."); 2518 GenerateProgramAction = [&]() { 2519 GenerateArg(Consumer, OPT_plugin, Opts.ActionName); 2520 }; 2521 } 2522 2523 // FIXME: Simplify the complex 'AST dump' command line. 2524 if (Opts.ProgramAction == frontend::ASTDump) { 2525 GenerateProgramAction = [&]() { 2526 // ASTDumpLookups, ASTDumpDeclTypes and ASTDumpFilter are generated via 2527 // marshalling infrastructure. 2528 2529 if (Opts.ASTDumpFormat != ADOF_Default) { 2530 StringRef Format; 2531 switch (Opts.ASTDumpFormat) { 2532 case ADOF_Default: 2533 llvm_unreachable("Default AST dump format."); 2534 case ADOF_JSON: 2535 Format = "json"; 2536 break; 2537 } 2538 2539 if (Opts.ASTDumpAll) 2540 GenerateArg(Consumer, OPT_ast_dump_all_EQ, Format); 2541 if (Opts.ASTDumpDecls) 2542 GenerateArg(Consumer, OPT_ast_dump_EQ, Format); 2543 } else { 2544 if (Opts.ASTDumpAll) 2545 GenerateArg(Consumer, OPT_ast_dump_all); 2546 if (Opts.ASTDumpDecls) 2547 GenerateArg(Consumer, OPT_ast_dump); 2548 } 2549 }; 2550 } 2551 2552 if (Opts.ProgramAction == frontend::FixIt && !Opts.FixItSuffix.empty()) { 2553 GenerateProgramAction = [&]() { 2554 GenerateArg(Consumer, OPT_fixit_EQ, Opts.FixItSuffix); 2555 }; 2556 } 2557 2558 GenerateProgramAction(); 2559 2560 for (const auto &PluginArgs : Opts.PluginArgs) { 2561 Option Opt = getDriverOptTable().getOption(OPT_plugin_arg); 2562 for (const auto &PluginArg : PluginArgs.second) 2563 denormalizeString(Consumer, 2564 Opt.getPrefix() + Opt.getName() + PluginArgs.first, 2565 Opt.getKind(), 0, PluginArg); 2566 } 2567 2568 for (const auto &Ext : Opts.ModuleFileExtensions) 2569 if (auto *TestExt = dyn_cast_or_null<TestModuleFileExtension>(Ext.get())) 2570 GenerateArg(Consumer, OPT_ftest_module_file_extension_EQ, TestExt->str()); 2571 2572 if (!Opts.CodeCompletionAt.FileName.empty()) 2573 GenerateArg(Consumer, OPT_code_completion_at, 2574 Opts.CodeCompletionAt.ToString()); 2575 2576 for (const auto &Plugin : Opts.Plugins) 2577 GenerateArg(Consumer, OPT_load, Plugin); 2578 2579 // ASTDumpDecls and ASTDumpAll already handled with ProgramAction. 2580 2581 for (const auto &ModuleFile : Opts.ModuleFiles) 2582 GenerateArg(Consumer, OPT_fmodule_file, ModuleFile); 2583 2584 if (Opts.AuxTargetCPU) 2585 GenerateArg(Consumer, OPT_aux_target_cpu, *Opts.AuxTargetCPU); 2586 2587 if (Opts.AuxTargetFeatures) 2588 for (const auto &Feature : *Opts.AuxTargetFeatures) 2589 GenerateArg(Consumer, OPT_aux_target_feature, Feature); 2590 2591 { 2592 StringRef Preprocessed = Opts.DashX.isPreprocessed() ? "-cpp-output" : ""; 2593 StringRef ModuleMap = 2594 Opts.DashX.getFormat() == InputKind::ModuleMap ? "-module-map" : ""; 2595 StringRef HeaderUnit = ""; 2596 switch (Opts.DashX.getHeaderUnitKind()) { 2597 case InputKind::HeaderUnit_None: 2598 break; 2599 case InputKind::HeaderUnit_User: 2600 HeaderUnit = "-user"; 2601 break; 2602 case InputKind::HeaderUnit_System: 2603 HeaderUnit = "-system"; 2604 break; 2605 case InputKind::HeaderUnit_Abs: 2606 HeaderUnit = "-header-unit"; 2607 break; 2608 } 2609 StringRef Header = IsHeader ? "-header" : ""; 2610 2611 StringRef Lang; 2612 switch (Opts.DashX.getLanguage()) { 2613 case Language::C: 2614 Lang = "c"; 2615 break; 2616 case Language::OpenCL: 2617 Lang = "cl"; 2618 break; 2619 case Language::OpenCLCXX: 2620 Lang = "clcpp"; 2621 break; 2622 case Language::CUDA: 2623 Lang = "cuda"; 2624 break; 2625 case Language::HIP: 2626 Lang = "hip"; 2627 break; 2628 case Language::CXX: 2629 Lang = "c++"; 2630 break; 2631 case Language::ObjC: 2632 Lang = "objective-c"; 2633 break; 2634 case Language::ObjCXX: 2635 Lang = "objective-c++"; 2636 break; 2637 case Language::RenderScript: 2638 Lang = "renderscript"; 2639 break; 2640 case Language::Asm: 2641 Lang = "assembler-with-cpp"; 2642 break; 2643 case Language::Unknown: 2644 assert(Opts.DashX.getFormat() == InputKind::Precompiled && 2645 "Generating -x argument for unknown language (not precompiled)."); 2646 Lang = "ast"; 2647 break; 2648 case Language::LLVM_IR: 2649 Lang = "ir"; 2650 break; 2651 case Language::HLSL: 2652 Lang = "hlsl"; 2653 break; 2654 } 2655 2656 GenerateArg(Consumer, OPT_x, 2657 Lang + HeaderUnit + Header + ModuleMap + Preprocessed); 2658 } 2659 2660 // OPT_INPUT has a unique class, generate it directly. 2661 for (const auto &Input : Opts.Inputs) 2662 Consumer(Input.getFile()); 2663 } 2664 2665 static bool ParseFrontendArgs(FrontendOptions &Opts, ArgList &Args, 2666 DiagnosticsEngine &Diags, bool &IsHeaderFile) { 2667 unsigned NumErrorsBefore = Diags.getNumErrors(); 2668 2669 FrontendOptions &FrontendOpts = Opts; 2670 2671 #define FRONTEND_OPTION_WITH_MARSHALLING(...) \ 2672 PARSE_OPTION_WITH_MARSHALLING(Args, Diags, __VA_ARGS__) 2673 #include "clang/Driver/Options.inc" 2674 #undef FRONTEND_OPTION_WITH_MARSHALLING 2675 2676 Opts.ProgramAction = frontend::ParseSyntaxOnly; 2677 if (const Arg *A = Args.getLastArg(OPT_Action_Group)) { 2678 OptSpecifier Opt = OptSpecifier(A->getOption().getID()); 2679 std::optional<frontend::ActionKind> ProgramAction = getFrontendAction(Opt); 2680 assert(ProgramAction && "Option specifier not in Action_Group."); 2681 2682 if (ProgramAction == frontend::ASTDump && 2683 (Opt == OPT_ast_dump_all_EQ || Opt == OPT_ast_dump_EQ)) { 2684 unsigned Val = llvm::StringSwitch<unsigned>(A->getValue()) 2685 .CaseLower("default", ADOF_Default) 2686 .CaseLower("json", ADOF_JSON) 2687 .Default(std::numeric_limits<unsigned>::max()); 2688 2689 if (Val != std::numeric_limits<unsigned>::max()) 2690 Opts.ASTDumpFormat = static_cast<ASTDumpOutputFormat>(Val); 2691 else { 2692 Diags.Report(diag::err_drv_invalid_value) 2693 << A->getAsString(Args) << A->getValue(); 2694 Opts.ASTDumpFormat = ADOF_Default; 2695 } 2696 } 2697 2698 if (ProgramAction == frontend::FixIt && Opt == OPT_fixit_EQ) 2699 Opts.FixItSuffix = A->getValue(); 2700 2701 if (ProgramAction == frontend::GenerateInterfaceStubs) { 2702 StringRef ArgStr = 2703 Args.hasArg(OPT_interface_stub_version_EQ) 2704 ? Args.getLastArgValue(OPT_interface_stub_version_EQ) 2705 : "ifs-v1"; 2706 if (ArgStr == "experimental-yaml-elf-v1" || 2707 ArgStr == "experimental-ifs-v1" || ArgStr == "experimental-ifs-v2" || 2708 ArgStr == "experimental-tapi-elf-v1") { 2709 std::string ErrorMessage = 2710 "Invalid interface stub format: " + ArgStr.str() + 2711 " is deprecated."; 2712 Diags.Report(diag::err_drv_invalid_value) 2713 << "Must specify a valid interface stub format type, ie: " 2714 "-interface-stub-version=ifs-v1" 2715 << ErrorMessage; 2716 ProgramAction = frontend::ParseSyntaxOnly; 2717 } else if (!ArgStr.startswith("ifs-")) { 2718 std::string ErrorMessage = 2719 "Invalid interface stub format: " + ArgStr.str() + "."; 2720 Diags.Report(diag::err_drv_invalid_value) 2721 << "Must specify a valid interface stub format type, ie: " 2722 "-interface-stub-version=ifs-v1" 2723 << ErrorMessage; 2724 ProgramAction = frontend::ParseSyntaxOnly; 2725 } 2726 } 2727 2728 Opts.ProgramAction = *ProgramAction; 2729 } 2730 2731 if (const Arg* A = Args.getLastArg(OPT_plugin)) { 2732 Opts.Plugins.emplace_back(A->getValue(0)); 2733 Opts.ProgramAction = frontend::PluginAction; 2734 Opts.ActionName = A->getValue(); 2735 } 2736 for (const auto *AA : Args.filtered(OPT_plugin_arg)) 2737 Opts.PluginArgs[AA->getValue(0)].emplace_back(AA->getValue(1)); 2738 2739 for (const std::string &Arg : 2740 Args.getAllArgValues(OPT_ftest_module_file_extension_EQ)) { 2741 std::string BlockName; 2742 unsigned MajorVersion; 2743 unsigned MinorVersion; 2744 bool Hashed; 2745 std::string UserInfo; 2746 if (parseTestModuleFileExtensionArg(Arg, BlockName, MajorVersion, 2747 MinorVersion, Hashed, UserInfo)) { 2748 Diags.Report(diag::err_test_module_file_extension_format) << Arg; 2749 2750 continue; 2751 } 2752 2753 // Add the testing module file extension. 2754 Opts.ModuleFileExtensions.push_back( 2755 std::make_shared<TestModuleFileExtension>( 2756 BlockName, MajorVersion, MinorVersion, Hashed, UserInfo)); 2757 } 2758 2759 if (const Arg *A = Args.getLastArg(OPT_code_completion_at)) { 2760 Opts.CodeCompletionAt = 2761 ParsedSourceLocation::FromString(A->getValue()); 2762 if (Opts.CodeCompletionAt.FileName.empty()) 2763 Diags.Report(diag::err_drv_invalid_value) 2764 << A->getAsString(Args) << A->getValue(); 2765 } 2766 2767 Opts.Plugins = Args.getAllArgValues(OPT_load); 2768 Opts.ASTDumpDecls = Args.hasArg(OPT_ast_dump, OPT_ast_dump_EQ); 2769 Opts.ASTDumpAll = Args.hasArg(OPT_ast_dump_all, OPT_ast_dump_all_EQ); 2770 // Only the -fmodule-file=<file> form. 2771 for (const auto *A : Args.filtered(OPT_fmodule_file)) { 2772 StringRef Val = A->getValue(); 2773 if (!Val.contains('=')) 2774 Opts.ModuleFiles.push_back(std::string(Val)); 2775 } 2776 2777 if (Opts.ProgramAction != frontend::GenerateModule && Opts.IsSystemModule) 2778 Diags.Report(diag::err_drv_argument_only_allowed_with) << "-fsystem-module" 2779 << "-emit-module"; 2780 2781 if (Args.hasArg(OPT_aux_target_cpu)) 2782 Opts.AuxTargetCPU = std::string(Args.getLastArgValue(OPT_aux_target_cpu)); 2783 if (Args.hasArg(OPT_aux_target_feature)) 2784 Opts.AuxTargetFeatures = Args.getAllArgValues(OPT_aux_target_feature); 2785 2786 if (Opts.ARCMTAction != FrontendOptions::ARCMT_None && 2787 Opts.ObjCMTAction != FrontendOptions::ObjCMT_None) { 2788 Diags.Report(diag::err_drv_argument_not_allowed_with) 2789 << "ARC migration" << "ObjC migration"; 2790 } 2791 2792 InputKind DashX(Language::Unknown); 2793 if (const Arg *A = Args.getLastArg(OPT_x)) { 2794 StringRef XValue = A->getValue(); 2795 2796 // Parse suffixes: 2797 // '<lang>(-[{header-unit,user,system}-]header|[-module-map][-cpp-output])'. 2798 // FIXME: Supporting '<lang>-header-cpp-output' would be useful. 2799 bool Preprocessed = XValue.consume_back("-cpp-output"); 2800 bool ModuleMap = XValue.consume_back("-module-map"); 2801 // Detect and consume the header indicator. 2802 bool IsHeader = 2803 XValue != "precompiled-header" && XValue.consume_back("-header"); 2804 2805 // If we have c++-{user,system}-header, that indicates a header unit input 2806 // likewise, if the user put -fmodule-header together with a header with an 2807 // absolute path (header-unit-header). 2808 InputKind::HeaderUnitKind HUK = InputKind::HeaderUnit_None; 2809 if (IsHeader || Preprocessed) { 2810 if (XValue.consume_back("-header-unit")) 2811 HUK = InputKind::HeaderUnit_Abs; 2812 else if (XValue.consume_back("-system")) 2813 HUK = InputKind::HeaderUnit_System; 2814 else if (XValue.consume_back("-user")) 2815 HUK = InputKind::HeaderUnit_User; 2816 } 2817 2818 // The value set by this processing is an un-preprocessed source which is 2819 // not intended to be a module map or header unit. 2820 IsHeaderFile = IsHeader && !Preprocessed && !ModuleMap && 2821 HUK == InputKind::HeaderUnit_None; 2822 2823 // Principal languages. 2824 DashX = llvm::StringSwitch<InputKind>(XValue) 2825 .Case("c", Language::C) 2826 .Case("cl", Language::OpenCL) 2827 .Case("clcpp", Language::OpenCLCXX) 2828 .Case("cuda", Language::CUDA) 2829 .Case("hip", Language::HIP) 2830 .Case("c++", Language::CXX) 2831 .Case("objective-c", Language::ObjC) 2832 .Case("objective-c++", Language::ObjCXX) 2833 .Case("renderscript", Language::RenderScript) 2834 .Case("hlsl", Language::HLSL) 2835 .Default(Language::Unknown); 2836 2837 // "objc[++]-cpp-output" is an acceptable synonym for 2838 // "objective-c[++]-cpp-output". 2839 if (DashX.isUnknown() && Preprocessed && !IsHeaderFile && !ModuleMap && 2840 HUK == InputKind::HeaderUnit_None) 2841 DashX = llvm::StringSwitch<InputKind>(XValue) 2842 .Case("objc", Language::ObjC) 2843 .Case("objc++", Language::ObjCXX) 2844 .Default(Language::Unknown); 2845 2846 // Some special cases cannot be combined with suffixes. 2847 if (DashX.isUnknown() && !Preprocessed && !IsHeaderFile && !ModuleMap && 2848 HUK == InputKind::HeaderUnit_None) 2849 DashX = llvm::StringSwitch<InputKind>(XValue) 2850 .Case("cpp-output", InputKind(Language::C).getPreprocessed()) 2851 .Case("assembler-with-cpp", Language::Asm) 2852 .Cases("ast", "pcm", "precompiled-header", 2853 InputKind(Language::Unknown, InputKind::Precompiled)) 2854 .Case("ir", Language::LLVM_IR) 2855 .Default(Language::Unknown); 2856 2857 if (DashX.isUnknown()) 2858 Diags.Report(diag::err_drv_invalid_value) 2859 << A->getAsString(Args) << A->getValue(); 2860 2861 if (Preprocessed) 2862 DashX = DashX.getPreprocessed(); 2863 // A regular header is considered mutually exclusive with a header unit. 2864 if (HUK != InputKind::HeaderUnit_None) { 2865 DashX = DashX.withHeaderUnit(HUK); 2866 IsHeaderFile = true; 2867 } else if (IsHeaderFile) 2868 DashX = DashX.getHeader(); 2869 if (ModuleMap) 2870 DashX = DashX.withFormat(InputKind::ModuleMap); 2871 } 2872 2873 // '-' is the default input if none is given. 2874 std::vector<std::string> Inputs = Args.getAllArgValues(OPT_INPUT); 2875 Opts.Inputs.clear(); 2876 if (Inputs.empty()) 2877 Inputs.push_back("-"); 2878 2879 if (DashX.getHeaderUnitKind() != InputKind::HeaderUnit_None && 2880 Inputs.size() > 1) 2881 Diags.Report(diag::err_drv_header_unit_extra_inputs) << Inputs[1]; 2882 2883 for (unsigned i = 0, e = Inputs.size(); i != e; ++i) { 2884 InputKind IK = DashX; 2885 if (IK.isUnknown()) { 2886 IK = FrontendOptions::getInputKindForExtension( 2887 StringRef(Inputs[i]).rsplit('.').second); 2888 // FIXME: Warn on this? 2889 if (IK.isUnknown()) 2890 IK = Language::C; 2891 // FIXME: Remove this hack. 2892 if (i == 0) 2893 DashX = IK; 2894 } 2895 2896 bool IsSystem = false; 2897 2898 // The -emit-module action implicitly takes a module map. 2899 if (Opts.ProgramAction == frontend::GenerateModule && 2900 IK.getFormat() == InputKind::Source) { 2901 IK = IK.withFormat(InputKind::ModuleMap); 2902 IsSystem = Opts.IsSystemModule; 2903 } 2904 2905 Opts.Inputs.emplace_back(std::move(Inputs[i]), IK, IsSystem); 2906 } 2907 2908 Opts.DashX = DashX; 2909 2910 return Diags.getNumErrors() == NumErrorsBefore; 2911 } 2912 2913 std::string CompilerInvocation::GetResourcesPath(const char *Argv0, 2914 void *MainAddr) { 2915 std::string ClangExecutable = 2916 llvm::sys::fs::getMainExecutable(Argv0, MainAddr); 2917 return Driver::GetResourcesPath(ClangExecutable, CLANG_RESOURCE_DIR); 2918 } 2919 2920 static void GenerateHeaderSearchArgs(HeaderSearchOptions &Opts, 2921 ArgumentConsumer Consumer) { 2922 const HeaderSearchOptions *HeaderSearchOpts = &Opts; 2923 #define HEADER_SEARCH_OPTION_WITH_MARSHALLING(...) \ 2924 GENERATE_OPTION_WITH_MARSHALLING(Consumer, __VA_ARGS__) 2925 #include "clang/Driver/Options.inc" 2926 #undef HEADER_SEARCH_OPTION_WITH_MARSHALLING 2927 2928 if (Opts.UseLibcxx) 2929 GenerateArg(Consumer, OPT_stdlib_EQ, "libc++"); 2930 2931 if (!Opts.ModuleCachePath.empty()) 2932 GenerateArg(Consumer, OPT_fmodules_cache_path, Opts.ModuleCachePath); 2933 2934 for (const auto &File : Opts.PrebuiltModuleFiles) 2935 GenerateArg(Consumer, OPT_fmodule_file, File.first + "=" + File.second); 2936 2937 for (const auto &Path : Opts.PrebuiltModulePaths) 2938 GenerateArg(Consumer, OPT_fprebuilt_module_path, Path); 2939 2940 for (const auto &Macro : Opts.ModulesIgnoreMacros) 2941 GenerateArg(Consumer, OPT_fmodules_ignore_macro, Macro.val()); 2942 2943 auto Matches = [](const HeaderSearchOptions::Entry &Entry, 2944 llvm::ArrayRef<frontend::IncludeDirGroup> Groups, 2945 std::optional<bool> IsFramework, 2946 std::optional<bool> IgnoreSysRoot) { 2947 return llvm::is_contained(Groups, Entry.Group) && 2948 (!IsFramework || (Entry.IsFramework == *IsFramework)) && 2949 (!IgnoreSysRoot || (Entry.IgnoreSysRoot == *IgnoreSysRoot)); 2950 }; 2951 2952 auto It = Opts.UserEntries.begin(); 2953 auto End = Opts.UserEntries.end(); 2954 2955 // Add -I..., -F..., and -index-header-map options in order. 2956 for (; It < End && Matches(*It, {frontend::IndexHeaderMap, frontend::Angled}, 2957 std::nullopt, true); 2958 ++It) { 2959 OptSpecifier Opt = [It, Matches]() { 2960 if (Matches(*It, frontend::IndexHeaderMap, true, true)) 2961 return OPT_F; 2962 if (Matches(*It, frontend::IndexHeaderMap, false, true)) 2963 return OPT_I; 2964 if (Matches(*It, frontend::Angled, true, true)) 2965 return OPT_F; 2966 if (Matches(*It, frontend::Angled, false, true)) 2967 return OPT_I; 2968 llvm_unreachable("Unexpected HeaderSearchOptions::Entry."); 2969 }(); 2970 2971 if (It->Group == frontend::IndexHeaderMap) 2972 GenerateArg(Consumer, OPT_index_header_map); 2973 GenerateArg(Consumer, Opt, It->Path); 2974 }; 2975 2976 // Note: some paths that came from "[-iprefix=xx] -iwithprefixbefore=yy" may 2977 // have already been generated as "-I[xx]yy". If that's the case, their 2978 // position on command line was such that this has no semantic impact on 2979 // include paths. 2980 for (; It < End && 2981 Matches(*It, {frontend::After, frontend::Angled}, false, true); 2982 ++It) { 2983 OptSpecifier Opt = 2984 It->Group == frontend::After ? OPT_iwithprefix : OPT_iwithprefixbefore; 2985 GenerateArg(Consumer, Opt, It->Path); 2986 } 2987 2988 // Note: Some paths that came from "-idirafter=xxyy" may have already been 2989 // generated as "-iwithprefix=xxyy". If that's the case, their position on 2990 // command line was such that this has no semantic impact on include paths. 2991 for (; It < End && Matches(*It, {frontend::After}, false, true); ++It) 2992 GenerateArg(Consumer, OPT_idirafter, It->Path); 2993 for (; It < End && Matches(*It, {frontend::Quoted}, false, true); ++It) 2994 GenerateArg(Consumer, OPT_iquote, It->Path); 2995 for (; It < End && Matches(*It, {frontend::System}, false, std::nullopt); 2996 ++It) 2997 GenerateArg(Consumer, It->IgnoreSysRoot ? OPT_isystem : OPT_iwithsysroot, 2998 It->Path); 2999 for (; It < End && Matches(*It, {frontend::System}, true, true); ++It) 3000 GenerateArg(Consumer, OPT_iframework, It->Path); 3001 for (; It < End && Matches(*It, {frontend::System}, true, false); ++It) 3002 GenerateArg(Consumer, OPT_iframeworkwithsysroot, It->Path); 3003 3004 // Add the paths for the various language specific isystem flags. 3005 for (; It < End && Matches(*It, {frontend::CSystem}, false, true); ++It) 3006 GenerateArg(Consumer, OPT_c_isystem, It->Path); 3007 for (; It < End && Matches(*It, {frontend::CXXSystem}, false, true); ++It) 3008 GenerateArg(Consumer, OPT_cxx_isystem, It->Path); 3009 for (; It < End && Matches(*It, {frontend::ObjCSystem}, false, true); ++It) 3010 GenerateArg(Consumer, OPT_objc_isystem, It->Path); 3011 for (; It < End && Matches(*It, {frontend::ObjCXXSystem}, false, true); ++It) 3012 GenerateArg(Consumer, OPT_objcxx_isystem, It->Path); 3013 3014 // Add the internal paths from a driver that detects standard include paths. 3015 // Note: Some paths that came from "-internal-isystem" arguments may have 3016 // already been generated as "-isystem". If that's the case, their position on 3017 // command line was such that this has no semantic impact on include paths. 3018 for (; It < End && 3019 Matches(*It, {frontend::System, frontend::ExternCSystem}, false, true); 3020 ++It) { 3021 OptSpecifier Opt = It->Group == frontend::System 3022 ? OPT_internal_isystem 3023 : OPT_internal_externc_isystem; 3024 GenerateArg(Consumer, Opt, It->Path); 3025 } 3026 3027 assert(It == End && "Unhandled HeaderSearchOption::Entry."); 3028 3029 // Add the path prefixes which are implicitly treated as being system headers. 3030 for (const auto &P : Opts.SystemHeaderPrefixes) { 3031 OptSpecifier Opt = P.IsSystemHeader ? OPT_system_header_prefix 3032 : OPT_no_system_header_prefix; 3033 GenerateArg(Consumer, Opt, P.Prefix); 3034 } 3035 3036 for (const std::string &F : Opts.VFSOverlayFiles) 3037 GenerateArg(Consumer, OPT_ivfsoverlay, F); 3038 } 3039 3040 static bool ParseHeaderSearchArgs(HeaderSearchOptions &Opts, ArgList &Args, 3041 DiagnosticsEngine &Diags, 3042 const std::string &WorkingDir) { 3043 unsigned NumErrorsBefore = Diags.getNumErrors(); 3044 3045 HeaderSearchOptions *HeaderSearchOpts = &Opts; 3046 3047 #define HEADER_SEARCH_OPTION_WITH_MARSHALLING(...) \ 3048 PARSE_OPTION_WITH_MARSHALLING(Args, Diags, __VA_ARGS__) 3049 #include "clang/Driver/Options.inc" 3050 #undef HEADER_SEARCH_OPTION_WITH_MARSHALLING 3051 3052 if (const Arg *A = Args.getLastArg(OPT_stdlib_EQ)) 3053 Opts.UseLibcxx = (strcmp(A->getValue(), "libc++") == 0); 3054 3055 // Canonicalize -fmodules-cache-path before storing it. 3056 SmallString<128> P(Args.getLastArgValue(OPT_fmodules_cache_path)); 3057 if (!(P.empty() || llvm::sys::path::is_absolute(P))) { 3058 if (WorkingDir.empty()) 3059 llvm::sys::fs::make_absolute(P); 3060 else 3061 llvm::sys::fs::make_absolute(WorkingDir, P); 3062 } 3063 llvm::sys::path::remove_dots(P); 3064 Opts.ModuleCachePath = std::string(P.str()); 3065 3066 // Only the -fmodule-file=<name>=<file> form. 3067 for (const auto *A : Args.filtered(OPT_fmodule_file)) { 3068 StringRef Val = A->getValue(); 3069 if (Val.contains('=')) { 3070 auto Split = Val.split('='); 3071 Opts.PrebuiltModuleFiles.insert( 3072 {std::string(Split.first), std::string(Split.second)}); 3073 } 3074 } 3075 for (const auto *A : Args.filtered(OPT_fprebuilt_module_path)) 3076 Opts.AddPrebuiltModulePath(A->getValue()); 3077 3078 for (const auto *A : Args.filtered(OPT_fmodules_ignore_macro)) { 3079 StringRef MacroDef = A->getValue(); 3080 Opts.ModulesIgnoreMacros.insert( 3081 llvm::CachedHashString(MacroDef.split('=').first)); 3082 } 3083 3084 // Add -I..., -F..., and -index-header-map options in order. 3085 bool IsIndexHeaderMap = false; 3086 bool IsSysrootSpecified = 3087 Args.hasArg(OPT__sysroot_EQ) || Args.hasArg(OPT_isysroot); 3088 for (const auto *A : Args.filtered(OPT_I, OPT_F, OPT_index_header_map)) { 3089 if (A->getOption().matches(OPT_index_header_map)) { 3090 // -index-header-map applies to the next -I or -F. 3091 IsIndexHeaderMap = true; 3092 continue; 3093 } 3094 3095 frontend::IncludeDirGroup Group = 3096 IsIndexHeaderMap ? frontend::IndexHeaderMap : frontend::Angled; 3097 3098 bool IsFramework = A->getOption().matches(OPT_F); 3099 std::string Path = A->getValue(); 3100 3101 if (IsSysrootSpecified && !IsFramework && A->getValue()[0] == '=') { 3102 SmallString<32> Buffer; 3103 llvm::sys::path::append(Buffer, Opts.Sysroot, 3104 llvm::StringRef(A->getValue()).substr(1)); 3105 Path = std::string(Buffer.str()); 3106 } 3107 3108 Opts.AddPath(Path, Group, IsFramework, 3109 /*IgnoreSysroot*/ true); 3110 IsIndexHeaderMap = false; 3111 } 3112 3113 // Add -iprefix/-iwithprefix/-iwithprefixbefore options. 3114 StringRef Prefix = ""; // FIXME: This isn't the correct default prefix. 3115 for (const auto *A : 3116 Args.filtered(OPT_iprefix, OPT_iwithprefix, OPT_iwithprefixbefore)) { 3117 if (A->getOption().matches(OPT_iprefix)) 3118 Prefix = A->getValue(); 3119 else if (A->getOption().matches(OPT_iwithprefix)) 3120 Opts.AddPath(Prefix.str() + A->getValue(), frontend::After, false, true); 3121 else 3122 Opts.AddPath(Prefix.str() + A->getValue(), frontend::Angled, false, true); 3123 } 3124 3125 for (const auto *A : Args.filtered(OPT_idirafter)) 3126 Opts.AddPath(A->getValue(), frontend::After, false, true); 3127 for (const auto *A : Args.filtered(OPT_iquote)) 3128 Opts.AddPath(A->getValue(), frontend::Quoted, false, true); 3129 for (const auto *A : Args.filtered(OPT_isystem, OPT_iwithsysroot)) 3130 Opts.AddPath(A->getValue(), frontend::System, false, 3131 !A->getOption().matches(OPT_iwithsysroot)); 3132 for (const auto *A : Args.filtered(OPT_iframework)) 3133 Opts.AddPath(A->getValue(), frontend::System, true, true); 3134 for (const auto *A : Args.filtered(OPT_iframeworkwithsysroot)) 3135 Opts.AddPath(A->getValue(), frontend::System, /*IsFramework=*/true, 3136 /*IgnoreSysRoot=*/false); 3137 3138 // Add the paths for the various language specific isystem flags. 3139 for (const auto *A : Args.filtered(OPT_c_isystem)) 3140 Opts.AddPath(A->getValue(), frontend::CSystem, false, true); 3141 for (const auto *A : Args.filtered(OPT_cxx_isystem)) 3142 Opts.AddPath(A->getValue(), frontend::CXXSystem, false, true); 3143 for (const auto *A : Args.filtered(OPT_objc_isystem)) 3144 Opts.AddPath(A->getValue(), frontend::ObjCSystem, false,true); 3145 for (const auto *A : Args.filtered(OPT_objcxx_isystem)) 3146 Opts.AddPath(A->getValue(), frontend::ObjCXXSystem, false, true); 3147 3148 // Add the internal paths from a driver that detects standard include paths. 3149 for (const auto *A : 3150 Args.filtered(OPT_internal_isystem, OPT_internal_externc_isystem)) { 3151 frontend::IncludeDirGroup Group = frontend::System; 3152 if (A->getOption().matches(OPT_internal_externc_isystem)) 3153 Group = frontend::ExternCSystem; 3154 Opts.AddPath(A->getValue(), Group, false, true); 3155 } 3156 3157 // Add the path prefixes which are implicitly treated as being system headers. 3158 for (const auto *A : 3159 Args.filtered(OPT_system_header_prefix, OPT_no_system_header_prefix)) 3160 Opts.AddSystemHeaderPrefix( 3161 A->getValue(), A->getOption().matches(OPT_system_header_prefix)); 3162 3163 for (const auto *A : Args.filtered(OPT_ivfsoverlay, OPT_vfsoverlay)) 3164 Opts.AddVFSOverlayFile(A->getValue()); 3165 3166 return Diags.getNumErrors() == NumErrorsBefore; 3167 } 3168 3169 /// Check if input file kind and language standard are compatible. 3170 static bool IsInputCompatibleWithStandard(InputKind IK, 3171 const LangStandard &S) { 3172 switch (IK.getLanguage()) { 3173 case Language::Unknown: 3174 case Language::LLVM_IR: 3175 llvm_unreachable("should not parse language flags for this input"); 3176 3177 case Language::C: 3178 case Language::ObjC: 3179 case Language::RenderScript: 3180 return S.getLanguage() == Language::C; 3181 3182 case Language::OpenCL: 3183 return S.getLanguage() == Language::OpenCL || 3184 S.getLanguage() == Language::OpenCLCXX; 3185 3186 case Language::OpenCLCXX: 3187 return S.getLanguage() == Language::OpenCLCXX; 3188 3189 case Language::CXX: 3190 case Language::ObjCXX: 3191 return S.getLanguage() == Language::CXX; 3192 3193 case Language::CUDA: 3194 // FIXME: What -std= values should be permitted for CUDA compilations? 3195 return S.getLanguage() == Language::CUDA || 3196 S.getLanguage() == Language::CXX; 3197 3198 case Language::HIP: 3199 return S.getLanguage() == Language::CXX || S.getLanguage() == Language::HIP; 3200 3201 case Language::Asm: 3202 // Accept (and ignore) all -std= values. 3203 // FIXME: The -std= value is not ignored; it affects the tokenization 3204 // and preprocessing rules if we're preprocessing this asm input. 3205 return true; 3206 3207 case Language::HLSL: 3208 return S.getLanguage() == Language::HLSL; 3209 } 3210 3211 llvm_unreachable("unexpected input language"); 3212 } 3213 3214 /// Get language name for given input kind. 3215 static StringRef GetInputKindName(InputKind IK) { 3216 switch (IK.getLanguage()) { 3217 case Language::C: 3218 return "C"; 3219 case Language::ObjC: 3220 return "Objective-C"; 3221 case Language::CXX: 3222 return "C++"; 3223 case Language::ObjCXX: 3224 return "Objective-C++"; 3225 case Language::OpenCL: 3226 return "OpenCL"; 3227 case Language::OpenCLCXX: 3228 return "C++ for OpenCL"; 3229 case Language::CUDA: 3230 return "CUDA"; 3231 case Language::RenderScript: 3232 return "RenderScript"; 3233 case Language::HIP: 3234 return "HIP"; 3235 3236 case Language::Asm: 3237 return "Asm"; 3238 case Language::LLVM_IR: 3239 return "LLVM IR"; 3240 3241 case Language::HLSL: 3242 return "HLSL"; 3243 3244 case Language::Unknown: 3245 break; 3246 } 3247 llvm_unreachable("unknown input language"); 3248 } 3249 3250 void CompilerInvocation::GenerateLangArgs(const LangOptions &Opts, 3251 ArgumentConsumer Consumer, 3252 const llvm::Triple &T, InputKind IK) { 3253 if (IK.getFormat() == InputKind::Precompiled || 3254 IK.getLanguage() == Language::LLVM_IR) { 3255 if (Opts.ObjCAutoRefCount) 3256 GenerateArg(Consumer, OPT_fobjc_arc); 3257 if (Opts.PICLevel != 0) 3258 GenerateArg(Consumer, OPT_pic_level, Twine(Opts.PICLevel)); 3259 if (Opts.PIE) 3260 GenerateArg(Consumer, OPT_pic_is_pie); 3261 for (StringRef Sanitizer : serializeSanitizerKinds(Opts.Sanitize)) 3262 GenerateArg(Consumer, OPT_fsanitize_EQ, Sanitizer); 3263 3264 return; 3265 } 3266 3267 OptSpecifier StdOpt; 3268 switch (Opts.LangStd) { 3269 case LangStandard::lang_opencl10: 3270 case LangStandard::lang_opencl11: 3271 case LangStandard::lang_opencl12: 3272 case LangStandard::lang_opencl20: 3273 case LangStandard::lang_opencl30: 3274 case LangStandard::lang_openclcpp10: 3275 case LangStandard::lang_openclcpp2021: 3276 StdOpt = OPT_cl_std_EQ; 3277 break; 3278 default: 3279 StdOpt = OPT_std_EQ; 3280 break; 3281 } 3282 3283 auto LangStandard = LangStandard::getLangStandardForKind(Opts.LangStd); 3284 GenerateArg(Consumer, StdOpt, LangStandard.getName()); 3285 3286 if (Opts.IncludeDefaultHeader) 3287 GenerateArg(Consumer, OPT_finclude_default_header); 3288 if (Opts.DeclareOpenCLBuiltins) 3289 GenerateArg(Consumer, OPT_fdeclare_opencl_builtins); 3290 3291 const LangOptions *LangOpts = &Opts; 3292 3293 #define LANG_OPTION_WITH_MARSHALLING(...) \ 3294 GENERATE_OPTION_WITH_MARSHALLING(Consumer, __VA_ARGS__) 3295 #include "clang/Driver/Options.inc" 3296 #undef LANG_OPTION_WITH_MARSHALLING 3297 3298 // The '-fcf-protection=' option is generated by CodeGenOpts generator. 3299 3300 if (Opts.ObjC) { 3301 GenerateArg(Consumer, OPT_fobjc_runtime_EQ, Opts.ObjCRuntime.getAsString()); 3302 3303 if (Opts.GC == LangOptions::GCOnly) 3304 GenerateArg(Consumer, OPT_fobjc_gc_only); 3305 else if (Opts.GC == LangOptions::HybridGC) 3306 GenerateArg(Consumer, OPT_fobjc_gc); 3307 else if (Opts.ObjCAutoRefCount == 1) 3308 GenerateArg(Consumer, OPT_fobjc_arc); 3309 3310 if (Opts.ObjCWeakRuntime) 3311 GenerateArg(Consumer, OPT_fobjc_runtime_has_weak); 3312 3313 if (Opts.ObjCWeak) 3314 GenerateArg(Consumer, OPT_fobjc_weak); 3315 3316 if (Opts.ObjCSubscriptingLegacyRuntime) 3317 GenerateArg(Consumer, OPT_fobjc_subscripting_legacy_runtime); 3318 } 3319 3320 if (Opts.GNUCVersion != 0) { 3321 unsigned Major = Opts.GNUCVersion / 100 / 100; 3322 unsigned Minor = (Opts.GNUCVersion / 100) % 100; 3323 unsigned Patch = Opts.GNUCVersion % 100; 3324 GenerateArg(Consumer, OPT_fgnuc_version_EQ, 3325 Twine(Major) + "." + Twine(Minor) + "." + Twine(Patch)); 3326 } 3327 3328 if (Opts.IgnoreXCOFFVisibility) 3329 GenerateArg(Consumer, OPT_mignore_xcoff_visibility); 3330 3331 if (Opts.SignedOverflowBehavior == LangOptions::SOB_Trapping) { 3332 GenerateArg(Consumer, OPT_ftrapv); 3333 GenerateArg(Consumer, OPT_ftrapv_handler, Opts.OverflowHandler); 3334 } else if (Opts.SignedOverflowBehavior == LangOptions::SOB_Defined) { 3335 GenerateArg(Consumer, OPT_fwrapv); 3336 } 3337 3338 if (Opts.MSCompatibilityVersion != 0) { 3339 unsigned Major = Opts.MSCompatibilityVersion / 10000000; 3340 unsigned Minor = (Opts.MSCompatibilityVersion / 100000) % 100; 3341 unsigned Subminor = Opts.MSCompatibilityVersion % 100000; 3342 GenerateArg(Consumer, OPT_fms_compatibility_version, 3343 Twine(Major) + "." + Twine(Minor) + "." + Twine(Subminor)); 3344 } 3345 3346 if ((!Opts.GNUMode && !Opts.MSVCCompat && !Opts.CPlusPlus17) || T.isOSzOS()) { 3347 if (!Opts.Trigraphs) 3348 GenerateArg(Consumer, OPT_fno_trigraphs); 3349 } else { 3350 if (Opts.Trigraphs) 3351 GenerateArg(Consumer, OPT_ftrigraphs); 3352 } 3353 3354 if (Opts.Blocks && !(Opts.OpenCL && Opts.OpenCLVersion == 200)) 3355 GenerateArg(Consumer, OPT_fblocks); 3356 3357 if (Opts.ConvergentFunctions && 3358 !(Opts.OpenCL || (Opts.CUDA && Opts.CUDAIsDevice) || Opts.SYCLIsDevice)) 3359 GenerateArg(Consumer, OPT_fconvergent_functions); 3360 3361 if (Opts.NoBuiltin && !Opts.Freestanding) 3362 GenerateArg(Consumer, OPT_fno_builtin); 3363 3364 if (!Opts.NoBuiltin) 3365 for (const auto &Func : Opts.NoBuiltinFuncs) 3366 GenerateArg(Consumer, OPT_fno_builtin_, Func); 3367 3368 if (Opts.LongDoubleSize == 128) 3369 GenerateArg(Consumer, OPT_mlong_double_128); 3370 else if (Opts.LongDoubleSize == 64) 3371 GenerateArg(Consumer, OPT_mlong_double_64); 3372 else if (Opts.LongDoubleSize == 80) 3373 GenerateArg(Consumer, OPT_mlong_double_80); 3374 3375 // Not generating '-mrtd', it's just an alias for '-fdefault-calling-conv='. 3376 3377 // OpenMP was requested via '-fopenmp', not implied by '-fopenmp-simd' or 3378 // '-fopenmp-targets='. 3379 if (Opts.OpenMP && !Opts.OpenMPSimd) { 3380 GenerateArg(Consumer, OPT_fopenmp); 3381 3382 if (Opts.OpenMP != 51) 3383 GenerateArg(Consumer, OPT_fopenmp_version_EQ, Twine(Opts.OpenMP)); 3384 3385 if (!Opts.OpenMPUseTLS) 3386 GenerateArg(Consumer, OPT_fnoopenmp_use_tls); 3387 3388 if (Opts.OpenMPIsTargetDevice) 3389 GenerateArg(Consumer, OPT_fopenmp_is_target_device); 3390 3391 if (Opts.OpenMPIRBuilder) 3392 GenerateArg(Consumer, OPT_fopenmp_enable_irbuilder); 3393 } 3394 3395 if (Opts.OpenMPSimd) { 3396 GenerateArg(Consumer, OPT_fopenmp_simd); 3397 3398 if (Opts.OpenMP != 51) 3399 GenerateArg(Consumer, OPT_fopenmp_version_EQ, Twine(Opts.OpenMP)); 3400 } 3401 3402 if (Opts.OpenMPThreadSubscription) 3403 GenerateArg(Consumer, OPT_fopenmp_assume_threads_oversubscription); 3404 3405 if (Opts.OpenMPTeamSubscription) 3406 GenerateArg(Consumer, OPT_fopenmp_assume_teams_oversubscription); 3407 3408 if (Opts.OpenMPTargetDebug != 0) 3409 GenerateArg(Consumer, OPT_fopenmp_target_debug_EQ, 3410 Twine(Opts.OpenMPTargetDebug)); 3411 3412 if (Opts.OpenMPCUDANumSMs != 0) 3413 GenerateArg(Consumer, OPT_fopenmp_cuda_number_of_sm_EQ, 3414 Twine(Opts.OpenMPCUDANumSMs)); 3415 3416 if (Opts.OpenMPCUDABlocksPerSM != 0) 3417 GenerateArg(Consumer, OPT_fopenmp_cuda_blocks_per_sm_EQ, 3418 Twine(Opts.OpenMPCUDABlocksPerSM)); 3419 3420 if (Opts.OpenMPCUDAReductionBufNum != 1024) 3421 GenerateArg(Consumer, OPT_fopenmp_cuda_teams_reduction_recs_num_EQ, 3422 Twine(Opts.OpenMPCUDAReductionBufNum)); 3423 3424 if (!Opts.OMPTargetTriples.empty()) { 3425 std::string Targets; 3426 llvm::raw_string_ostream OS(Targets); 3427 llvm::interleave( 3428 Opts.OMPTargetTriples, OS, 3429 [&OS](const llvm::Triple &T) { OS << T.str(); }, ","); 3430 GenerateArg(Consumer, OPT_fopenmp_targets_EQ, OS.str()); 3431 } 3432 3433 if (!Opts.OMPHostIRFile.empty()) 3434 GenerateArg(Consumer, OPT_fopenmp_host_ir_file_path, Opts.OMPHostIRFile); 3435 3436 if (Opts.OpenMPCUDAMode) 3437 GenerateArg(Consumer, OPT_fopenmp_cuda_mode); 3438 3439 // The arguments used to set Optimize, OptimizeSize and NoInlineDefine are 3440 // generated from CodeGenOptions. 3441 3442 if (Opts.DefaultFPContractMode == LangOptions::FPM_Fast) 3443 GenerateArg(Consumer, OPT_ffp_contract, "fast"); 3444 else if (Opts.DefaultFPContractMode == LangOptions::FPM_On) 3445 GenerateArg(Consumer, OPT_ffp_contract, "on"); 3446 else if (Opts.DefaultFPContractMode == LangOptions::FPM_Off) 3447 GenerateArg(Consumer, OPT_ffp_contract, "off"); 3448 else if (Opts.DefaultFPContractMode == LangOptions::FPM_FastHonorPragmas) 3449 GenerateArg(Consumer, OPT_ffp_contract, "fast-honor-pragmas"); 3450 3451 for (StringRef Sanitizer : serializeSanitizerKinds(Opts.Sanitize)) 3452 GenerateArg(Consumer, OPT_fsanitize_EQ, Sanitizer); 3453 3454 // Conflating '-fsanitize-system-ignorelist' and '-fsanitize-ignorelist'. 3455 for (const std::string &F : Opts.NoSanitizeFiles) 3456 GenerateArg(Consumer, OPT_fsanitize_ignorelist_EQ, F); 3457 3458 if (Opts.getClangABICompat() == LangOptions::ClangABI::Ver3_8) 3459 GenerateArg(Consumer, OPT_fclang_abi_compat_EQ, "3.8"); 3460 else if (Opts.getClangABICompat() == LangOptions::ClangABI::Ver4) 3461 GenerateArg(Consumer, OPT_fclang_abi_compat_EQ, "4.0"); 3462 else if (Opts.getClangABICompat() == LangOptions::ClangABI::Ver6) 3463 GenerateArg(Consumer, OPT_fclang_abi_compat_EQ, "6.0"); 3464 else if (Opts.getClangABICompat() == LangOptions::ClangABI::Ver7) 3465 GenerateArg(Consumer, OPT_fclang_abi_compat_EQ, "7.0"); 3466 else if (Opts.getClangABICompat() == LangOptions::ClangABI::Ver9) 3467 GenerateArg(Consumer, OPT_fclang_abi_compat_EQ, "9.0"); 3468 else if (Opts.getClangABICompat() == LangOptions::ClangABI::Ver11) 3469 GenerateArg(Consumer, OPT_fclang_abi_compat_EQ, "11.0"); 3470 else if (Opts.getClangABICompat() == LangOptions::ClangABI::Ver12) 3471 GenerateArg(Consumer, OPT_fclang_abi_compat_EQ, "12.0"); 3472 else if (Opts.getClangABICompat() == LangOptions::ClangABI::Ver14) 3473 GenerateArg(Consumer, OPT_fclang_abi_compat_EQ, "14.0"); 3474 else if (Opts.getClangABICompat() == LangOptions::ClangABI::Ver15) 3475 GenerateArg(Consumer, OPT_fclang_abi_compat_EQ, "15.0"); 3476 3477 if (Opts.getSignReturnAddressScope() == 3478 LangOptions::SignReturnAddressScopeKind::All) 3479 GenerateArg(Consumer, OPT_msign_return_address_EQ, "all"); 3480 else if (Opts.getSignReturnAddressScope() == 3481 LangOptions::SignReturnAddressScopeKind::NonLeaf) 3482 GenerateArg(Consumer, OPT_msign_return_address_EQ, "non-leaf"); 3483 3484 if (Opts.getSignReturnAddressKey() == 3485 LangOptions::SignReturnAddressKeyKind::BKey) 3486 GenerateArg(Consumer, OPT_msign_return_address_key_EQ, "b_key"); 3487 3488 if (Opts.CXXABI) 3489 GenerateArg(Consumer, OPT_fcxx_abi_EQ, 3490 TargetCXXABI::getSpelling(*Opts.CXXABI)); 3491 3492 if (Opts.RelativeCXXABIVTables) 3493 GenerateArg(Consumer, OPT_fexperimental_relative_cxx_abi_vtables); 3494 else 3495 GenerateArg(Consumer, OPT_fno_experimental_relative_cxx_abi_vtables); 3496 3497 if (Opts.UseTargetPathSeparator) 3498 GenerateArg(Consumer, OPT_ffile_reproducible); 3499 else 3500 GenerateArg(Consumer, OPT_fno_file_reproducible); 3501 3502 for (const auto &MP : Opts.MacroPrefixMap) 3503 GenerateArg(Consumer, OPT_fmacro_prefix_map_EQ, MP.first + "=" + MP.second); 3504 3505 if (!Opts.RandstructSeed.empty()) 3506 GenerateArg(Consumer, OPT_frandomize_layout_seed_EQ, Opts.RandstructSeed); 3507 } 3508 3509 bool CompilerInvocation::ParseLangArgs(LangOptions &Opts, ArgList &Args, 3510 InputKind IK, const llvm::Triple &T, 3511 std::vector<std::string> &Includes, 3512 DiagnosticsEngine &Diags) { 3513 unsigned NumErrorsBefore = Diags.getNumErrors(); 3514 3515 if (IK.getFormat() == InputKind::Precompiled || 3516 IK.getLanguage() == Language::LLVM_IR) { 3517 // ObjCAAutoRefCount and Sanitize LangOpts are used to setup the 3518 // PassManager in BackendUtil.cpp. They need to be initialized no matter 3519 // what the input type is. 3520 if (Args.hasArg(OPT_fobjc_arc)) 3521 Opts.ObjCAutoRefCount = 1; 3522 // PICLevel and PIELevel are needed during code generation and this should 3523 // be set regardless of the input type. 3524 Opts.PICLevel = getLastArgIntValue(Args, OPT_pic_level, 0, Diags); 3525 Opts.PIE = Args.hasArg(OPT_pic_is_pie); 3526 parseSanitizerKinds("-fsanitize=", Args.getAllArgValues(OPT_fsanitize_EQ), 3527 Diags, Opts.Sanitize); 3528 3529 return Diags.getNumErrors() == NumErrorsBefore; 3530 } 3531 3532 // Other LangOpts are only initialized when the input is not AST or LLVM IR. 3533 // FIXME: Should we really be parsing this for an Language::Asm input? 3534 3535 // FIXME: Cleanup per-file based stuff. 3536 LangStandard::Kind LangStd = LangStandard::lang_unspecified; 3537 if (const Arg *A = Args.getLastArg(OPT_std_EQ)) { 3538 LangStd = LangStandard::getLangKind(A->getValue()); 3539 if (LangStd == LangStandard::lang_unspecified) { 3540 Diags.Report(diag::err_drv_invalid_value) 3541 << A->getAsString(Args) << A->getValue(); 3542 // Report supported standards with short description. 3543 for (unsigned KindValue = 0; 3544 KindValue != LangStandard::lang_unspecified; 3545 ++KindValue) { 3546 const LangStandard &Std = LangStandard::getLangStandardForKind( 3547 static_cast<LangStandard::Kind>(KindValue)); 3548 if (IsInputCompatibleWithStandard(IK, Std)) { 3549 auto Diag = Diags.Report(diag::note_drv_use_standard); 3550 Diag << Std.getName() << Std.getDescription(); 3551 unsigned NumAliases = 0; 3552 #define LANGSTANDARD(id, name, lang, desc, features) 3553 #define LANGSTANDARD_ALIAS(id, alias) \ 3554 if (KindValue == LangStandard::lang_##id) ++NumAliases; 3555 #define LANGSTANDARD_ALIAS_DEPR(id, alias) 3556 #include "clang/Basic/LangStandards.def" 3557 Diag << NumAliases; 3558 #define LANGSTANDARD(id, name, lang, desc, features) 3559 #define LANGSTANDARD_ALIAS(id, alias) \ 3560 if (KindValue == LangStandard::lang_##id) Diag << alias; 3561 #define LANGSTANDARD_ALIAS_DEPR(id, alias) 3562 #include "clang/Basic/LangStandards.def" 3563 } 3564 } 3565 } else { 3566 // Valid standard, check to make sure language and standard are 3567 // compatible. 3568 const LangStandard &Std = LangStandard::getLangStandardForKind(LangStd); 3569 if (!IsInputCompatibleWithStandard(IK, Std)) { 3570 Diags.Report(diag::err_drv_argument_not_allowed_with) 3571 << A->getAsString(Args) << GetInputKindName(IK); 3572 } 3573 } 3574 } 3575 3576 // -cl-std only applies for OpenCL language standards. 3577 // Override the -std option in this case. 3578 if (const Arg *A = Args.getLastArg(OPT_cl_std_EQ)) { 3579 LangStandard::Kind OpenCLLangStd 3580 = llvm::StringSwitch<LangStandard::Kind>(A->getValue()) 3581 .Cases("cl", "CL", LangStandard::lang_opencl10) 3582 .Cases("cl1.0", "CL1.0", LangStandard::lang_opencl10) 3583 .Cases("cl1.1", "CL1.1", LangStandard::lang_opencl11) 3584 .Cases("cl1.2", "CL1.2", LangStandard::lang_opencl12) 3585 .Cases("cl2.0", "CL2.0", LangStandard::lang_opencl20) 3586 .Cases("cl3.0", "CL3.0", LangStandard::lang_opencl30) 3587 .Cases("clc++", "CLC++", LangStandard::lang_openclcpp10) 3588 .Cases("clc++1.0", "CLC++1.0", LangStandard::lang_openclcpp10) 3589 .Cases("clc++2021", "CLC++2021", LangStandard::lang_openclcpp2021) 3590 .Default(LangStandard::lang_unspecified); 3591 3592 if (OpenCLLangStd == LangStandard::lang_unspecified) { 3593 Diags.Report(diag::err_drv_invalid_value) 3594 << A->getAsString(Args) << A->getValue(); 3595 } 3596 else 3597 LangStd = OpenCLLangStd; 3598 } 3599 3600 // These need to be parsed now. They are used to set OpenCL defaults. 3601 Opts.IncludeDefaultHeader = Args.hasArg(OPT_finclude_default_header); 3602 Opts.DeclareOpenCLBuiltins = Args.hasArg(OPT_fdeclare_opencl_builtins); 3603 3604 LangOptions::setLangDefaults(Opts, IK.getLanguage(), T, Includes, LangStd); 3605 3606 // The key paths of codegen options defined in Options.td start with 3607 // "LangOpts->". Let's provide the expected variable name and type. 3608 LangOptions *LangOpts = &Opts; 3609 3610 #define LANG_OPTION_WITH_MARSHALLING(...) \ 3611 PARSE_OPTION_WITH_MARSHALLING(Args, Diags, __VA_ARGS__) 3612 #include "clang/Driver/Options.inc" 3613 #undef LANG_OPTION_WITH_MARSHALLING 3614 3615 if (const Arg *A = Args.getLastArg(OPT_fcf_protection_EQ)) { 3616 StringRef Name = A->getValue(); 3617 if (Name == "full" || Name == "branch") { 3618 Opts.CFProtectionBranch = 1; 3619 } 3620 } 3621 3622 if ((Args.hasArg(OPT_fsycl_is_device) || Args.hasArg(OPT_fsycl_is_host)) && 3623 !Args.hasArg(OPT_sycl_std_EQ)) { 3624 // If the user supplied -fsycl-is-device or -fsycl-is-host, but failed to 3625 // provide -sycl-std=, we want to default it to whatever the default SYCL 3626 // version is. I could not find a way to express this with the options 3627 // tablegen because we still want this value to be SYCL_None when the user 3628 // is not in device or host mode. 3629 Opts.setSYCLVersion(LangOptions::SYCL_Default); 3630 } 3631 3632 if (Opts.ObjC) { 3633 if (Arg *arg = Args.getLastArg(OPT_fobjc_runtime_EQ)) { 3634 StringRef value = arg->getValue(); 3635 if (Opts.ObjCRuntime.tryParse(value)) 3636 Diags.Report(diag::err_drv_unknown_objc_runtime) << value; 3637 } 3638 3639 if (Args.hasArg(OPT_fobjc_gc_only)) 3640 Opts.setGC(LangOptions::GCOnly); 3641 else if (Args.hasArg(OPT_fobjc_gc)) 3642 Opts.setGC(LangOptions::HybridGC); 3643 else if (Args.hasArg(OPT_fobjc_arc)) { 3644 Opts.ObjCAutoRefCount = 1; 3645 if (!Opts.ObjCRuntime.allowsARC()) 3646 Diags.Report(diag::err_arc_unsupported_on_runtime); 3647 } 3648 3649 // ObjCWeakRuntime tracks whether the runtime supports __weak, not 3650 // whether the feature is actually enabled. This is predominantly 3651 // determined by -fobjc-runtime, but we allow it to be overridden 3652 // from the command line for testing purposes. 3653 if (Args.hasArg(OPT_fobjc_runtime_has_weak)) 3654 Opts.ObjCWeakRuntime = 1; 3655 else 3656 Opts.ObjCWeakRuntime = Opts.ObjCRuntime.allowsWeak(); 3657 3658 // ObjCWeak determines whether __weak is actually enabled. 3659 // Note that we allow -fno-objc-weak to disable this even in ARC mode. 3660 if (auto weakArg = Args.getLastArg(OPT_fobjc_weak, OPT_fno_objc_weak)) { 3661 if (!weakArg->getOption().matches(OPT_fobjc_weak)) { 3662 assert(!Opts.ObjCWeak); 3663 } else if (Opts.getGC() != LangOptions::NonGC) { 3664 Diags.Report(diag::err_objc_weak_with_gc); 3665 } else if (!Opts.ObjCWeakRuntime) { 3666 Diags.Report(diag::err_objc_weak_unsupported); 3667 } else { 3668 Opts.ObjCWeak = 1; 3669 } 3670 } else if (Opts.ObjCAutoRefCount) { 3671 Opts.ObjCWeak = Opts.ObjCWeakRuntime; 3672 } 3673 3674 if (Args.hasArg(OPT_fobjc_subscripting_legacy_runtime)) 3675 Opts.ObjCSubscriptingLegacyRuntime = 3676 (Opts.ObjCRuntime.getKind() == ObjCRuntime::FragileMacOSX); 3677 } 3678 3679 if (Arg *A = Args.getLastArg(options::OPT_fgnuc_version_EQ)) { 3680 // Check that the version has 1 to 3 components and the minor and patch 3681 // versions fit in two decimal digits. 3682 VersionTuple GNUCVer; 3683 bool Invalid = GNUCVer.tryParse(A->getValue()); 3684 unsigned Major = GNUCVer.getMajor(); 3685 unsigned Minor = GNUCVer.getMinor().value_or(0); 3686 unsigned Patch = GNUCVer.getSubminor().value_or(0); 3687 if (Invalid || GNUCVer.getBuild() || Minor >= 100 || Patch >= 100) { 3688 Diags.Report(diag::err_drv_invalid_value) 3689 << A->getAsString(Args) << A->getValue(); 3690 } 3691 Opts.GNUCVersion = Major * 100 * 100 + Minor * 100 + Patch; 3692 } 3693 3694 if (T.isOSAIX() && (Args.hasArg(OPT_mignore_xcoff_visibility))) 3695 Opts.IgnoreXCOFFVisibility = 1; 3696 3697 if (Args.hasArg(OPT_ftrapv)) { 3698 Opts.setSignedOverflowBehavior(LangOptions::SOB_Trapping); 3699 // Set the handler, if one is specified. 3700 Opts.OverflowHandler = 3701 std::string(Args.getLastArgValue(OPT_ftrapv_handler)); 3702 } 3703 else if (Args.hasArg(OPT_fwrapv)) 3704 Opts.setSignedOverflowBehavior(LangOptions::SOB_Defined); 3705 3706 Opts.MSCompatibilityVersion = 0; 3707 if (const Arg *A = Args.getLastArg(OPT_fms_compatibility_version)) { 3708 VersionTuple VT; 3709 if (VT.tryParse(A->getValue())) 3710 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) 3711 << A->getValue(); 3712 Opts.MSCompatibilityVersion = VT.getMajor() * 10000000 + 3713 VT.getMinor().value_or(0) * 100000 + 3714 VT.getSubminor().value_or(0); 3715 } 3716 3717 // Mimicking gcc's behavior, trigraphs are only enabled if -trigraphs 3718 // is specified, or -std is set to a conforming mode. 3719 // Trigraphs are disabled by default in c++1z onwards. 3720 // For z/OS, trigraphs are enabled by default (without regard to the above). 3721 Opts.Trigraphs = 3722 (!Opts.GNUMode && !Opts.MSVCCompat && !Opts.CPlusPlus17) || T.isOSzOS(); 3723 Opts.Trigraphs = 3724 Args.hasFlag(OPT_ftrigraphs, OPT_fno_trigraphs, Opts.Trigraphs); 3725 3726 Opts.Blocks = Args.hasArg(OPT_fblocks) || (Opts.OpenCL 3727 && Opts.OpenCLVersion == 200); 3728 3729 Opts.ConvergentFunctions = Args.hasArg(OPT_fconvergent_functions) || 3730 Opts.OpenCL || (Opts.CUDA && Opts.CUDAIsDevice) || 3731 Opts.SYCLIsDevice; 3732 3733 Opts.NoBuiltin = Args.hasArg(OPT_fno_builtin) || Opts.Freestanding; 3734 if (!Opts.NoBuiltin) 3735 getAllNoBuiltinFuncValues(Args, Opts.NoBuiltinFuncs); 3736 if (Arg *A = Args.getLastArg(options::OPT_LongDouble_Group)) { 3737 if (A->getOption().matches(options::OPT_mlong_double_64)) 3738 Opts.LongDoubleSize = 64; 3739 else if (A->getOption().matches(options::OPT_mlong_double_80)) 3740 Opts.LongDoubleSize = 80; 3741 else if (A->getOption().matches(options::OPT_mlong_double_128)) 3742 Opts.LongDoubleSize = 128; 3743 else 3744 Opts.LongDoubleSize = 0; 3745 } 3746 if (Opts.FastRelaxedMath || Opts.CLUnsafeMath) 3747 Opts.setDefaultFPContractMode(LangOptions::FPM_Fast); 3748 3749 llvm::sort(Opts.ModuleFeatures); 3750 3751 // -mrtd option 3752 if (Arg *A = Args.getLastArg(OPT_mrtd)) { 3753 if (Opts.getDefaultCallingConv() != LangOptions::DCC_None) 3754 Diags.Report(diag::err_drv_argument_not_allowed_with) 3755 << A->getSpelling() << "-fdefault-calling-conv"; 3756 else { 3757 if (T.getArch() != llvm::Triple::x86) 3758 Diags.Report(diag::err_drv_argument_not_allowed_with) 3759 << A->getSpelling() << T.getTriple(); 3760 else 3761 Opts.setDefaultCallingConv(LangOptions::DCC_StdCall); 3762 } 3763 } 3764 3765 // Check if -fopenmp is specified and set default version to 5.0. 3766 Opts.OpenMP = Args.hasArg(OPT_fopenmp) ? 51 : 0; 3767 // Check if -fopenmp-simd is specified. 3768 bool IsSimdSpecified = 3769 Args.hasFlag(options::OPT_fopenmp_simd, options::OPT_fno_openmp_simd, 3770 /*Default=*/false); 3771 Opts.OpenMPSimd = !Opts.OpenMP && IsSimdSpecified; 3772 Opts.OpenMPUseTLS = 3773 Opts.OpenMP && !Args.hasArg(options::OPT_fnoopenmp_use_tls); 3774 Opts.OpenMPIsTargetDevice = 3775 Opts.OpenMP && Args.hasArg(options::OPT_fopenmp_is_target_device); 3776 Opts.OpenMPIRBuilder = 3777 Opts.OpenMP && Args.hasArg(options::OPT_fopenmp_enable_irbuilder); 3778 bool IsTargetSpecified = 3779 Opts.OpenMPIsTargetDevice || Args.hasArg(options::OPT_fopenmp_targets_EQ); 3780 3781 Opts.ConvergentFunctions = 3782 Opts.ConvergentFunctions || Opts.OpenMPIsTargetDevice; 3783 3784 if (Opts.OpenMP || Opts.OpenMPSimd) { 3785 if (int Version = getLastArgIntValue( 3786 Args, OPT_fopenmp_version_EQ, 3787 (IsSimdSpecified || IsTargetSpecified) ? 51 : Opts.OpenMP, Diags)) 3788 Opts.OpenMP = Version; 3789 // Provide diagnostic when a given target is not expected to be an OpenMP 3790 // device or host. 3791 if (!Opts.OpenMPIsTargetDevice) { 3792 switch (T.getArch()) { 3793 default: 3794 break; 3795 // Add unsupported host targets here: 3796 case llvm::Triple::nvptx: 3797 case llvm::Triple::nvptx64: 3798 Diags.Report(diag::err_drv_omp_host_target_not_supported) << T.str(); 3799 break; 3800 } 3801 } 3802 } 3803 3804 // Set the flag to prevent the implementation from emitting device exception 3805 // handling code for those requiring so. 3806 if ((Opts.OpenMPIsTargetDevice && (T.isNVPTX() || T.isAMDGCN())) || 3807 Opts.OpenCLCPlusPlus) { 3808 3809 Opts.Exceptions = 0; 3810 Opts.CXXExceptions = 0; 3811 } 3812 if (Opts.OpenMPIsTargetDevice && T.isNVPTX()) { 3813 Opts.OpenMPCUDANumSMs = 3814 getLastArgIntValue(Args, options::OPT_fopenmp_cuda_number_of_sm_EQ, 3815 Opts.OpenMPCUDANumSMs, Diags); 3816 Opts.OpenMPCUDABlocksPerSM = 3817 getLastArgIntValue(Args, options::OPT_fopenmp_cuda_blocks_per_sm_EQ, 3818 Opts.OpenMPCUDABlocksPerSM, Diags); 3819 Opts.OpenMPCUDAReductionBufNum = getLastArgIntValue( 3820 Args, options::OPT_fopenmp_cuda_teams_reduction_recs_num_EQ, 3821 Opts.OpenMPCUDAReductionBufNum, Diags); 3822 } 3823 3824 // Set the value of the debugging flag used in the new offloading device RTL. 3825 // Set either by a specific value or to a default if not specified. 3826 if (Opts.OpenMPIsTargetDevice && (Args.hasArg(OPT_fopenmp_target_debug) || 3827 Args.hasArg(OPT_fopenmp_target_debug_EQ))) { 3828 Opts.OpenMPTargetDebug = getLastArgIntValue( 3829 Args, OPT_fopenmp_target_debug_EQ, Opts.OpenMPTargetDebug, Diags); 3830 if (!Opts.OpenMPTargetDebug && Args.hasArg(OPT_fopenmp_target_debug)) 3831 Opts.OpenMPTargetDebug = 1; 3832 } 3833 3834 if (Opts.OpenMPIsTargetDevice) { 3835 if (Args.hasArg(OPT_fopenmp_assume_teams_oversubscription)) 3836 Opts.OpenMPTeamSubscription = true; 3837 if (Args.hasArg(OPT_fopenmp_assume_threads_oversubscription)) 3838 Opts.OpenMPThreadSubscription = true; 3839 } 3840 3841 // Get the OpenMP target triples if any. 3842 if (Arg *A = Args.getLastArg(options::OPT_fopenmp_targets_EQ)) { 3843 enum ArchPtrSize { Arch16Bit, Arch32Bit, Arch64Bit }; 3844 auto getArchPtrSize = [](const llvm::Triple &T) { 3845 if (T.isArch16Bit()) 3846 return Arch16Bit; 3847 if (T.isArch32Bit()) 3848 return Arch32Bit; 3849 assert(T.isArch64Bit() && "Expected 64-bit architecture"); 3850 return Arch64Bit; 3851 }; 3852 3853 for (unsigned i = 0; i < A->getNumValues(); ++i) { 3854 llvm::Triple TT(A->getValue(i)); 3855 3856 if (TT.getArch() == llvm::Triple::UnknownArch || 3857 !(TT.getArch() == llvm::Triple::aarch64 || TT.isPPC() || 3858 TT.getArch() == llvm::Triple::nvptx || 3859 TT.getArch() == llvm::Triple::nvptx64 || 3860 TT.getArch() == llvm::Triple::amdgcn || 3861 TT.getArch() == llvm::Triple::x86 || 3862 TT.getArch() == llvm::Triple::x86_64)) 3863 Diags.Report(diag::err_drv_invalid_omp_target) << A->getValue(i); 3864 else if (getArchPtrSize(T) != getArchPtrSize(TT)) 3865 Diags.Report(diag::err_drv_incompatible_omp_arch) 3866 << A->getValue(i) << T.str(); 3867 else 3868 Opts.OMPTargetTriples.push_back(TT); 3869 } 3870 } 3871 3872 // Get OpenMP host file path if any and report if a non existent file is 3873 // found 3874 if (Arg *A = Args.getLastArg(options::OPT_fopenmp_host_ir_file_path)) { 3875 Opts.OMPHostIRFile = A->getValue(); 3876 if (!llvm::sys::fs::exists(Opts.OMPHostIRFile)) 3877 Diags.Report(diag::err_drv_omp_host_ir_file_not_found) 3878 << Opts.OMPHostIRFile; 3879 } 3880 3881 // Set CUDA mode for OpenMP target NVPTX/AMDGCN if specified in options 3882 Opts.OpenMPCUDAMode = Opts.OpenMPIsTargetDevice && 3883 (T.isNVPTX() || T.isAMDGCN()) && 3884 Args.hasArg(options::OPT_fopenmp_cuda_mode); 3885 3886 // FIXME: Eliminate this dependency. 3887 unsigned Opt = getOptimizationLevel(Args, IK, Diags), 3888 OptSize = getOptimizationLevelSize(Args); 3889 Opts.Optimize = Opt != 0; 3890 Opts.OptimizeSize = OptSize != 0; 3891 3892 // This is the __NO_INLINE__ define, which just depends on things like the 3893 // optimization level and -fno-inline, not actually whether the backend has 3894 // inlining enabled. 3895 Opts.NoInlineDefine = !Opts.Optimize; 3896 if (Arg *InlineArg = Args.getLastArg( 3897 options::OPT_finline_functions, options::OPT_finline_hint_functions, 3898 options::OPT_fno_inline_functions, options::OPT_fno_inline)) 3899 if (InlineArg->getOption().matches(options::OPT_fno_inline)) 3900 Opts.NoInlineDefine = true; 3901 3902 if (Arg *A = Args.getLastArg(OPT_ffp_contract)) { 3903 StringRef Val = A->getValue(); 3904 if (Val == "fast") 3905 Opts.setDefaultFPContractMode(LangOptions::FPM_Fast); 3906 else if (Val == "on") 3907 Opts.setDefaultFPContractMode(LangOptions::FPM_On); 3908 else if (Val == "off") 3909 Opts.setDefaultFPContractMode(LangOptions::FPM_Off); 3910 else if (Val == "fast-honor-pragmas") 3911 Opts.setDefaultFPContractMode(LangOptions::FPM_FastHonorPragmas); 3912 else 3913 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Val; 3914 } 3915 3916 // Parse -fsanitize= arguments. 3917 parseSanitizerKinds("-fsanitize=", Args.getAllArgValues(OPT_fsanitize_EQ), 3918 Diags, Opts.Sanitize); 3919 Opts.NoSanitizeFiles = Args.getAllArgValues(OPT_fsanitize_ignorelist_EQ); 3920 std::vector<std::string> systemIgnorelists = 3921 Args.getAllArgValues(OPT_fsanitize_system_ignorelist_EQ); 3922 Opts.NoSanitizeFiles.insert(Opts.NoSanitizeFiles.end(), 3923 systemIgnorelists.begin(), 3924 systemIgnorelists.end()); 3925 3926 if (Arg *A = Args.getLastArg(OPT_fclang_abi_compat_EQ)) { 3927 Opts.setClangABICompat(LangOptions::ClangABI::Latest); 3928 3929 StringRef Ver = A->getValue(); 3930 std::pair<StringRef, StringRef> VerParts = Ver.split('.'); 3931 unsigned Major, Minor = 0; 3932 3933 // Check the version number is valid: either 3.x (0 <= x <= 9) or 3934 // y or y.0 (4 <= y <= current version). 3935 if (!VerParts.first.startswith("0") && 3936 !VerParts.first.getAsInteger(10, Major) && 3937 3 <= Major && Major <= CLANG_VERSION_MAJOR && 3938 (Major == 3 ? VerParts.second.size() == 1 && 3939 !VerParts.second.getAsInteger(10, Minor) 3940 : VerParts.first.size() == Ver.size() || 3941 VerParts.second == "0")) { 3942 // Got a valid version number. 3943 if (Major == 3 && Minor <= 8) 3944 Opts.setClangABICompat(LangOptions::ClangABI::Ver3_8); 3945 else if (Major <= 4) 3946 Opts.setClangABICompat(LangOptions::ClangABI::Ver4); 3947 else if (Major <= 6) 3948 Opts.setClangABICompat(LangOptions::ClangABI::Ver6); 3949 else if (Major <= 7) 3950 Opts.setClangABICompat(LangOptions::ClangABI::Ver7); 3951 else if (Major <= 9) 3952 Opts.setClangABICompat(LangOptions::ClangABI::Ver9); 3953 else if (Major <= 11) 3954 Opts.setClangABICompat(LangOptions::ClangABI::Ver11); 3955 else if (Major <= 12) 3956 Opts.setClangABICompat(LangOptions::ClangABI::Ver12); 3957 else if (Major <= 14) 3958 Opts.setClangABICompat(LangOptions::ClangABI::Ver14); 3959 else if (Major <= 15) 3960 Opts.setClangABICompat(LangOptions::ClangABI::Ver15); 3961 } else if (Ver != "latest") { 3962 Diags.Report(diag::err_drv_invalid_value) 3963 << A->getAsString(Args) << A->getValue(); 3964 } 3965 } 3966 3967 if (Arg *A = Args.getLastArg(OPT_msign_return_address_EQ)) { 3968 StringRef SignScope = A->getValue(); 3969 3970 if (SignScope.equals_insensitive("none")) 3971 Opts.setSignReturnAddressScope( 3972 LangOptions::SignReturnAddressScopeKind::None); 3973 else if (SignScope.equals_insensitive("all")) 3974 Opts.setSignReturnAddressScope( 3975 LangOptions::SignReturnAddressScopeKind::All); 3976 else if (SignScope.equals_insensitive("non-leaf")) 3977 Opts.setSignReturnAddressScope( 3978 LangOptions::SignReturnAddressScopeKind::NonLeaf); 3979 else 3980 Diags.Report(diag::err_drv_invalid_value) 3981 << A->getAsString(Args) << SignScope; 3982 3983 if (Arg *A = Args.getLastArg(OPT_msign_return_address_key_EQ)) { 3984 StringRef SignKey = A->getValue(); 3985 if (!SignScope.empty() && !SignKey.empty()) { 3986 if (SignKey.equals_insensitive("a_key")) 3987 Opts.setSignReturnAddressKey( 3988 LangOptions::SignReturnAddressKeyKind::AKey); 3989 else if (SignKey.equals_insensitive("b_key")) 3990 Opts.setSignReturnAddressKey( 3991 LangOptions::SignReturnAddressKeyKind::BKey); 3992 else 3993 Diags.Report(diag::err_drv_invalid_value) 3994 << A->getAsString(Args) << SignKey; 3995 } 3996 } 3997 } 3998 3999 // The value can be empty, which indicates the system default should be used. 4000 StringRef CXXABI = Args.getLastArgValue(OPT_fcxx_abi_EQ); 4001 if (!CXXABI.empty()) { 4002 if (!TargetCXXABI::isABI(CXXABI)) { 4003 Diags.Report(diag::err_invalid_cxx_abi) << CXXABI; 4004 } else { 4005 auto Kind = TargetCXXABI::getKind(CXXABI); 4006 if (!TargetCXXABI::isSupportedCXXABI(T, Kind)) 4007 Diags.Report(diag::err_unsupported_cxx_abi) << CXXABI << T.str(); 4008 else 4009 Opts.CXXABI = Kind; 4010 } 4011 } 4012 4013 Opts.RelativeCXXABIVTables = 4014 Args.hasFlag(options::OPT_fexperimental_relative_cxx_abi_vtables, 4015 options::OPT_fno_experimental_relative_cxx_abi_vtables, 4016 TargetCXXABI::usesRelativeVTables(T)); 4017 4018 for (const auto &A : Args.getAllArgValues(OPT_fmacro_prefix_map_EQ)) { 4019 auto Split = StringRef(A).split('='); 4020 Opts.MacroPrefixMap.insert( 4021 {std::string(Split.first), std::string(Split.second)}); 4022 } 4023 4024 Opts.UseTargetPathSeparator = 4025 !Args.getLastArg(OPT_fno_file_reproducible) && 4026 (Args.getLastArg(OPT_ffile_compilation_dir_EQ) || 4027 Args.getLastArg(OPT_fmacro_prefix_map_EQ) || 4028 Args.getLastArg(OPT_ffile_reproducible)); 4029 4030 // Error if -mvscale-min is unbounded. 4031 if (Arg *A = Args.getLastArg(options::OPT_mvscale_min_EQ)) { 4032 unsigned VScaleMin; 4033 if (StringRef(A->getValue()).getAsInteger(10, VScaleMin) || VScaleMin == 0) 4034 Diags.Report(diag::err_cc1_unbounded_vscale_min); 4035 } 4036 4037 if (const Arg *A = Args.getLastArg(OPT_frandomize_layout_seed_file_EQ)) { 4038 std::ifstream SeedFile(A->getValue(0)); 4039 4040 if (!SeedFile.is_open()) 4041 Diags.Report(diag::err_drv_cannot_open_randomize_layout_seed_file) 4042 << A->getValue(0); 4043 4044 std::getline(SeedFile, Opts.RandstructSeed); 4045 } 4046 4047 if (const Arg *A = Args.getLastArg(OPT_frandomize_layout_seed_EQ)) 4048 Opts.RandstructSeed = A->getValue(0); 4049 4050 // Validate options for HLSL 4051 if (Opts.HLSL) { 4052 bool SupportedTarget = T.getArch() == llvm::Triple::dxil && 4053 T.getOS() == llvm::Triple::ShaderModel; 4054 if (!SupportedTarget) 4055 Diags.Report(diag::err_drv_hlsl_unsupported_target) << T.str(); 4056 } 4057 4058 return Diags.getNumErrors() == NumErrorsBefore; 4059 } 4060 4061 static bool isStrictlyPreprocessorAction(frontend::ActionKind Action) { 4062 switch (Action) { 4063 case frontend::ASTDeclList: 4064 case frontend::ASTDump: 4065 case frontend::ASTPrint: 4066 case frontend::ASTView: 4067 case frontend::EmitAssembly: 4068 case frontend::EmitBC: 4069 case frontend::EmitHTML: 4070 case frontend::EmitLLVM: 4071 case frontend::EmitLLVMOnly: 4072 case frontend::EmitCodeGenOnly: 4073 case frontend::EmitObj: 4074 case frontend::ExtractAPI: 4075 case frontend::FixIt: 4076 case frontend::GenerateModule: 4077 case frontend::GenerateModuleInterface: 4078 case frontend::GenerateHeaderUnit: 4079 case frontend::GeneratePCH: 4080 case frontend::GenerateInterfaceStubs: 4081 case frontend::ParseSyntaxOnly: 4082 case frontend::ModuleFileInfo: 4083 case frontend::VerifyPCH: 4084 case frontend::PluginAction: 4085 case frontend::RewriteObjC: 4086 case frontend::RewriteTest: 4087 case frontend::RunAnalysis: 4088 case frontend::TemplightDump: 4089 case frontend::MigrateSource: 4090 return false; 4091 4092 case frontend::DumpCompilerOptions: 4093 case frontend::DumpRawTokens: 4094 case frontend::DumpTokens: 4095 case frontend::InitOnly: 4096 case frontend::PrintPreamble: 4097 case frontend::PrintPreprocessedInput: 4098 case frontend::RewriteMacros: 4099 case frontend::RunPreprocessorOnly: 4100 case frontend::PrintDependencyDirectivesSourceMinimizerOutput: 4101 return true; 4102 } 4103 llvm_unreachable("invalid frontend action"); 4104 } 4105 4106 static void GeneratePreprocessorArgs(PreprocessorOptions &Opts, 4107 ArgumentConsumer Consumer, 4108 const LangOptions &LangOpts, 4109 const FrontendOptions &FrontendOpts, 4110 const CodeGenOptions &CodeGenOpts) { 4111 PreprocessorOptions *PreprocessorOpts = &Opts; 4112 4113 #define PREPROCESSOR_OPTION_WITH_MARSHALLING(...) \ 4114 GENERATE_OPTION_WITH_MARSHALLING(Consumer, __VA_ARGS__) 4115 #include "clang/Driver/Options.inc" 4116 #undef PREPROCESSOR_OPTION_WITH_MARSHALLING 4117 4118 if (Opts.PCHWithHdrStop && !Opts.PCHWithHdrStopCreate) 4119 GenerateArg(Consumer, OPT_pch_through_hdrstop_use); 4120 4121 for (const auto &D : Opts.DeserializedPCHDeclsToErrorOn) 4122 GenerateArg(Consumer, OPT_error_on_deserialized_pch_decl, D); 4123 4124 if (Opts.PrecompiledPreambleBytes != std::make_pair(0u, false)) 4125 GenerateArg(Consumer, OPT_preamble_bytes_EQ, 4126 Twine(Opts.PrecompiledPreambleBytes.first) + "," + 4127 (Opts.PrecompiledPreambleBytes.second ? "1" : "0")); 4128 4129 for (const auto &M : Opts.Macros) { 4130 // Don't generate __CET__ macro definitions. They are implied by the 4131 // -fcf-protection option that is generated elsewhere. 4132 if (M.first == "__CET__=1" && !M.second && 4133 !CodeGenOpts.CFProtectionReturn && CodeGenOpts.CFProtectionBranch) 4134 continue; 4135 if (M.first == "__CET__=2" && !M.second && CodeGenOpts.CFProtectionReturn && 4136 !CodeGenOpts.CFProtectionBranch) 4137 continue; 4138 if (M.first == "__CET__=3" && !M.second && CodeGenOpts.CFProtectionReturn && 4139 CodeGenOpts.CFProtectionBranch) 4140 continue; 4141 4142 GenerateArg(Consumer, M.second ? OPT_U : OPT_D, M.first); 4143 } 4144 4145 for (const auto &I : Opts.Includes) { 4146 // Don't generate OpenCL includes. They are implied by other flags that are 4147 // generated elsewhere. 4148 if (LangOpts.OpenCL && LangOpts.IncludeDefaultHeader && 4149 ((LangOpts.DeclareOpenCLBuiltins && I == "opencl-c-base.h") || 4150 I == "opencl-c.h")) 4151 continue; 4152 // Don't generate HLSL includes. They are implied by other flags that are 4153 // generated elsewhere. 4154 if (LangOpts.HLSL && I == "hlsl.h") 4155 continue; 4156 4157 GenerateArg(Consumer, OPT_include, I); 4158 } 4159 4160 for (const auto &CI : Opts.ChainedIncludes) 4161 GenerateArg(Consumer, OPT_chain_include, CI); 4162 4163 for (const auto &RF : Opts.RemappedFiles) 4164 GenerateArg(Consumer, OPT_remap_file, RF.first + ";" + RF.second); 4165 4166 if (Opts.SourceDateEpoch) 4167 GenerateArg(Consumer, OPT_source_date_epoch, Twine(*Opts.SourceDateEpoch)); 4168 4169 // Don't handle LexEditorPlaceholders. It is implied by the action that is 4170 // generated elsewhere. 4171 } 4172 4173 static bool ParsePreprocessorArgs(PreprocessorOptions &Opts, ArgList &Args, 4174 DiagnosticsEngine &Diags, 4175 frontend::ActionKind Action, 4176 const FrontendOptions &FrontendOpts) { 4177 unsigned NumErrorsBefore = Diags.getNumErrors(); 4178 4179 PreprocessorOptions *PreprocessorOpts = &Opts; 4180 4181 #define PREPROCESSOR_OPTION_WITH_MARSHALLING(...) \ 4182 PARSE_OPTION_WITH_MARSHALLING(Args, Diags, __VA_ARGS__) 4183 #include "clang/Driver/Options.inc" 4184 #undef PREPROCESSOR_OPTION_WITH_MARSHALLING 4185 4186 Opts.PCHWithHdrStop = Args.hasArg(OPT_pch_through_hdrstop_create) || 4187 Args.hasArg(OPT_pch_through_hdrstop_use); 4188 4189 for (const auto *A : Args.filtered(OPT_error_on_deserialized_pch_decl)) 4190 Opts.DeserializedPCHDeclsToErrorOn.insert(A->getValue()); 4191 4192 if (const Arg *A = Args.getLastArg(OPT_preamble_bytes_EQ)) { 4193 StringRef Value(A->getValue()); 4194 size_t Comma = Value.find(','); 4195 unsigned Bytes = 0; 4196 unsigned EndOfLine = 0; 4197 4198 if (Comma == StringRef::npos || 4199 Value.substr(0, Comma).getAsInteger(10, Bytes) || 4200 Value.substr(Comma + 1).getAsInteger(10, EndOfLine)) 4201 Diags.Report(diag::err_drv_preamble_format); 4202 else { 4203 Opts.PrecompiledPreambleBytes.first = Bytes; 4204 Opts.PrecompiledPreambleBytes.second = (EndOfLine != 0); 4205 } 4206 } 4207 4208 // Add the __CET__ macro if a CFProtection option is set. 4209 if (const Arg *A = Args.getLastArg(OPT_fcf_protection_EQ)) { 4210 StringRef Name = A->getValue(); 4211 if (Name == "branch") 4212 Opts.addMacroDef("__CET__=1"); 4213 else if (Name == "return") 4214 Opts.addMacroDef("__CET__=2"); 4215 else if (Name == "full") 4216 Opts.addMacroDef("__CET__=3"); 4217 } 4218 4219 // Add macros from the command line. 4220 for (const auto *A : Args.filtered(OPT_D, OPT_U)) { 4221 if (A->getOption().matches(OPT_D)) 4222 Opts.addMacroDef(A->getValue()); 4223 else 4224 Opts.addMacroUndef(A->getValue()); 4225 } 4226 4227 // Add the ordered list of -includes. 4228 for (const auto *A : Args.filtered(OPT_include)) 4229 Opts.Includes.emplace_back(A->getValue()); 4230 4231 for (const auto *A : Args.filtered(OPT_chain_include)) 4232 Opts.ChainedIncludes.emplace_back(A->getValue()); 4233 4234 for (const auto *A : Args.filtered(OPT_remap_file)) { 4235 std::pair<StringRef, StringRef> Split = StringRef(A->getValue()).split(';'); 4236 4237 if (Split.second.empty()) { 4238 Diags.Report(diag::err_drv_invalid_remap_file) << A->getAsString(Args); 4239 continue; 4240 } 4241 4242 Opts.addRemappedFile(Split.first, Split.second); 4243 } 4244 4245 if (const Arg *A = Args.getLastArg(OPT_source_date_epoch)) { 4246 StringRef Epoch = A->getValue(); 4247 // SOURCE_DATE_EPOCH, if specified, must be a non-negative decimal integer. 4248 // On time64 systems, pick 253402300799 (the UNIX timestamp of 4249 // 9999-12-31T23:59:59Z) as the upper bound. 4250 const uint64_t MaxTimestamp = 4251 std::min<uint64_t>(std::numeric_limits<time_t>::max(), 253402300799); 4252 uint64_t V; 4253 if (Epoch.getAsInteger(10, V) || V > MaxTimestamp) { 4254 Diags.Report(diag::err_fe_invalid_source_date_epoch) 4255 << Epoch << MaxTimestamp; 4256 } else { 4257 Opts.SourceDateEpoch = V; 4258 } 4259 } 4260 4261 // Always avoid lexing editor placeholders when we're just running the 4262 // preprocessor as we never want to emit the 4263 // "editor placeholder in source file" error in PP only mode. 4264 if (isStrictlyPreprocessorAction(Action)) 4265 Opts.LexEditorPlaceholders = false; 4266 4267 return Diags.getNumErrors() == NumErrorsBefore; 4268 } 4269 4270 static void 4271 GeneratePreprocessorOutputArgs(const PreprocessorOutputOptions &Opts, 4272 ArgumentConsumer Consumer, 4273 frontend::ActionKind Action) { 4274 const PreprocessorOutputOptions &PreprocessorOutputOpts = Opts; 4275 4276 #define PREPROCESSOR_OUTPUT_OPTION_WITH_MARSHALLING(...) \ 4277 GENERATE_OPTION_WITH_MARSHALLING(Consumer, __VA_ARGS__) 4278 #include "clang/Driver/Options.inc" 4279 #undef PREPROCESSOR_OUTPUT_OPTION_WITH_MARSHALLING 4280 4281 bool Generate_dM = isStrictlyPreprocessorAction(Action) && !Opts.ShowCPP; 4282 if (Generate_dM) 4283 GenerateArg(Consumer, OPT_dM); 4284 if (!Generate_dM && Opts.ShowMacros) 4285 GenerateArg(Consumer, OPT_dD); 4286 if (Opts.DirectivesOnly) 4287 GenerateArg(Consumer, OPT_fdirectives_only); 4288 } 4289 4290 static bool ParsePreprocessorOutputArgs(PreprocessorOutputOptions &Opts, 4291 ArgList &Args, DiagnosticsEngine &Diags, 4292 frontend::ActionKind Action) { 4293 unsigned NumErrorsBefore = Diags.getNumErrors(); 4294 4295 PreprocessorOutputOptions &PreprocessorOutputOpts = Opts; 4296 4297 #define PREPROCESSOR_OUTPUT_OPTION_WITH_MARSHALLING(...) \ 4298 PARSE_OPTION_WITH_MARSHALLING(Args, Diags, __VA_ARGS__) 4299 #include "clang/Driver/Options.inc" 4300 #undef PREPROCESSOR_OUTPUT_OPTION_WITH_MARSHALLING 4301 4302 Opts.ShowCPP = isStrictlyPreprocessorAction(Action) && !Args.hasArg(OPT_dM); 4303 Opts.ShowMacros = Args.hasArg(OPT_dM) || Args.hasArg(OPT_dD); 4304 Opts.DirectivesOnly = Args.hasArg(OPT_fdirectives_only); 4305 4306 return Diags.getNumErrors() == NumErrorsBefore; 4307 } 4308 4309 static void GenerateTargetArgs(const TargetOptions &Opts, 4310 ArgumentConsumer Consumer) { 4311 const TargetOptions *TargetOpts = &Opts; 4312 #define TARGET_OPTION_WITH_MARSHALLING(...) \ 4313 GENERATE_OPTION_WITH_MARSHALLING(Consumer, __VA_ARGS__) 4314 #include "clang/Driver/Options.inc" 4315 #undef TARGET_OPTION_WITH_MARSHALLING 4316 4317 if (!Opts.SDKVersion.empty()) 4318 GenerateArg(Consumer, OPT_target_sdk_version_EQ, 4319 Opts.SDKVersion.getAsString()); 4320 if (!Opts.DarwinTargetVariantSDKVersion.empty()) 4321 GenerateArg(Consumer, OPT_darwin_target_variant_sdk_version_EQ, 4322 Opts.DarwinTargetVariantSDKVersion.getAsString()); 4323 } 4324 4325 static bool ParseTargetArgs(TargetOptions &Opts, ArgList &Args, 4326 DiagnosticsEngine &Diags) { 4327 unsigned NumErrorsBefore = Diags.getNumErrors(); 4328 4329 TargetOptions *TargetOpts = &Opts; 4330 4331 #define TARGET_OPTION_WITH_MARSHALLING(...) \ 4332 PARSE_OPTION_WITH_MARSHALLING(Args, Diags, __VA_ARGS__) 4333 #include "clang/Driver/Options.inc" 4334 #undef TARGET_OPTION_WITH_MARSHALLING 4335 4336 if (Arg *A = Args.getLastArg(options::OPT_target_sdk_version_EQ)) { 4337 llvm::VersionTuple Version; 4338 if (Version.tryParse(A->getValue())) 4339 Diags.Report(diag::err_drv_invalid_value) 4340 << A->getAsString(Args) << A->getValue(); 4341 else 4342 Opts.SDKVersion = Version; 4343 } 4344 if (Arg *A = 4345 Args.getLastArg(options::OPT_darwin_target_variant_sdk_version_EQ)) { 4346 llvm::VersionTuple Version; 4347 if (Version.tryParse(A->getValue())) 4348 Diags.Report(diag::err_drv_invalid_value) 4349 << A->getAsString(Args) << A->getValue(); 4350 else 4351 Opts.DarwinTargetVariantSDKVersion = Version; 4352 } 4353 4354 return Diags.getNumErrors() == NumErrorsBefore; 4355 } 4356 4357 bool CompilerInvocation::CreateFromArgsImpl( 4358 CompilerInvocation &Res, ArrayRef<const char *> CommandLineArgs, 4359 DiagnosticsEngine &Diags, const char *Argv0) { 4360 unsigned NumErrorsBefore = Diags.getNumErrors(); 4361 4362 // Parse the arguments. 4363 const OptTable &Opts = getDriverOptTable(); 4364 const unsigned IncludedFlagsBitmask = options::CC1Option; 4365 unsigned MissingArgIndex, MissingArgCount; 4366 InputArgList Args = Opts.ParseArgs(CommandLineArgs, MissingArgIndex, 4367 MissingArgCount, IncludedFlagsBitmask); 4368 LangOptions &LangOpts = *Res.getLangOpts(); 4369 4370 // Check for missing argument error. 4371 if (MissingArgCount) 4372 Diags.Report(diag::err_drv_missing_argument) 4373 << Args.getArgString(MissingArgIndex) << MissingArgCount; 4374 4375 // Issue errors on unknown arguments. 4376 for (const auto *A : Args.filtered(OPT_UNKNOWN)) { 4377 auto ArgString = A->getAsString(Args); 4378 std::string Nearest; 4379 if (Opts.findNearest(ArgString, Nearest, IncludedFlagsBitmask) > 1) 4380 Diags.Report(diag::err_drv_unknown_argument) << ArgString; 4381 else 4382 Diags.Report(diag::err_drv_unknown_argument_with_suggestion) 4383 << ArgString << Nearest; 4384 } 4385 4386 ParseFileSystemArgs(Res.getFileSystemOpts(), Args, Diags); 4387 ParseMigratorArgs(Res.getMigratorOpts(), Args, Diags); 4388 ParseAnalyzerArgs(*Res.getAnalyzerOpts(), Args, Diags); 4389 ParseDiagnosticArgs(Res.getDiagnosticOpts(), Args, &Diags, 4390 /*DefaultDiagColor=*/false); 4391 ParseFrontendArgs(Res.getFrontendOpts(), Args, Diags, LangOpts.IsHeaderFile); 4392 // FIXME: We shouldn't have to pass the DashX option around here 4393 InputKind DashX = Res.getFrontendOpts().DashX; 4394 ParseTargetArgs(Res.getTargetOpts(), Args, Diags); 4395 llvm::Triple T(Res.getTargetOpts().Triple); 4396 ParseHeaderSearchArgs(Res.getHeaderSearchOpts(), Args, Diags, 4397 Res.getFileSystemOpts().WorkingDir); 4398 4399 ParseLangArgs(LangOpts, Args, DashX, T, Res.getPreprocessorOpts().Includes, 4400 Diags); 4401 if (Res.getFrontendOpts().ProgramAction == frontend::RewriteObjC) 4402 LangOpts.ObjCExceptions = 1; 4403 4404 for (auto Warning : Res.getDiagnosticOpts().Warnings) { 4405 if (Warning == "misexpect" && 4406 !Diags.isIgnored(diag::warn_profile_data_misexpect, SourceLocation())) { 4407 Res.getCodeGenOpts().MisExpect = true; 4408 } 4409 } 4410 4411 if (LangOpts.CUDA) { 4412 // During CUDA device-side compilation, the aux triple is the 4413 // triple used for host compilation. 4414 if (LangOpts.CUDAIsDevice) 4415 Res.getTargetOpts().HostTriple = Res.getFrontendOpts().AuxTriple; 4416 } 4417 4418 // Set the triple of the host for OpenMP device compile. 4419 if (LangOpts.OpenMPIsTargetDevice) 4420 Res.getTargetOpts().HostTriple = Res.getFrontendOpts().AuxTriple; 4421 4422 ParseCodeGenArgs(Res.getCodeGenOpts(), Args, DashX, Diags, T, 4423 Res.getFrontendOpts().OutputFile, LangOpts); 4424 4425 // FIXME: Override value name discarding when asan or msan is used because the 4426 // backend passes depend on the name of the alloca in order to print out 4427 // names. 4428 Res.getCodeGenOpts().DiscardValueNames &= 4429 !LangOpts.Sanitize.has(SanitizerKind::Address) && 4430 !LangOpts.Sanitize.has(SanitizerKind::KernelAddress) && 4431 !LangOpts.Sanitize.has(SanitizerKind::Memory) && 4432 !LangOpts.Sanitize.has(SanitizerKind::KernelMemory); 4433 4434 ParsePreprocessorArgs(Res.getPreprocessorOpts(), Args, Diags, 4435 Res.getFrontendOpts().ProgramAction, 4436 Res.getFrontendOpts()); 4437 ParsePreprocessorOutputArgs(Res.getPreprocessorOutputOpts(), Args, Diags, 4438 Res.getFrontendOpts().ProgramAction); 4439 4440 ParseDependencyOutputArgs(Res.getDependencyOutputOpts(), Args, Diags, 4441 Res.getFrontendOpts().ProgramAction, 4442 Res.getPreprocessorOutputOpts().ShowLineMarkers); 4443 if (!Res.getDependencyOutputOpts().OutputFile.empty() && 4444 Res.getDependencyOutputOpts().Targets.empty()) 4445 Diags.Report(diag::err_fe_dependency_file_requires_MT); 4446 4447 // If sanitizer is enabled, disable OPT_ffine_grained_bitfield_accesses. 4448 if (Res.getCodeGenOpts().FineGrainedBitfieldAccesses && 4449 !Res.getLangOpts()->Sanitize.empty()) { 4450 Res.getCodeGenOpts().FineGrainedBitfieldAccesses = false; 4451 Diags.Report(diag::warn_drv_fine_grained_bitfield_accesses_ignored); 4452 } 4453 4454 // Store the command-line for using in the CodeView backend. 4455 if (Res.getCodeGenOpts().CodeViewCommandLine) { 4456 Res.getCodeGenOpts().Argv0 = Argv0; 4457 append_range(Res.getCodeGenOpts().CommandLineArgs, CommandLineArgs); 4458 } 4459 4460 // Set PGOOptions. Need to create a temporary VFS to read the profile 4461 // to determine the PGO type. 4462 if (!Res.getCodeGenOpts().ProfileInstrumentUsePath.empty()) { 4463 auto FS = 4464 createVFSFromOverlayFiles(Res.getHeaderSearchOpts().VFSOverlayFiles, 4465 Diags, llvm::vfs::getRealFileSystem()); 4466 setPGOUseInstrumentor(Res.getCodeGenOpts(), 4467 Res.getCodeGenOpts().ProfileInstrumentUsePath, *FS, 4468 Diags); 4469 } 4470 4471 FixupInvocation(Res, Diags, Args, DashX); 4472 4473 return Diags.getNumErrors() == NumErrorsBefore; 4474 } 4475 4476 bool CompilerInvocation::CreateFromArgs(CompilerInvocation &Invocation, 4477 ArrayRef<const char *> CommandLineArgs, 4478 DiagnosticsEngine &Diags, 4479 const char *Argv0) { 4480 CompilerInvocation DummyInvocation; 4481 4482 return RoundTrip( 4483 [](CompilerInvocation &Invocation, ArrayRef<const char *> CommandLineArgs, 4484 DiagnosticsEngine &Diags, const char *Argv0) { 4485 return CreateFromArgsImpl(Invocation, CommandLineArgs, Diags, Argv0); 4486 }, 4487 [](CompilerInvocation &Invocation, SmallVectorImpl<const char *> &Args, 4488 StringAllocator SA) { 4489 Args.push_back("-cc1"); 4490 Invocation.generateCC1CommandLine(Args, SA); 4491 }, 4492 Invocation, DummyInvocation, CommandLineArgs, Diags, Argv0); 4493 } 4494 4495 std::string CompilerInvocation::getModuleHash() const { 4496 // FIXME: Consider using SHA1 instead of MD5. 4497 llvm::HashBuilder<llvm::MD5, llvm::support::endianness::native> HBuilder; 4498 4499 // Note: For QoI reasons, the things we use as a hash here should all be 4500 // dumped via the -module-info flag. 4501 4502 // Start the signature with the compiler version. 4503 HBuilder.add(getClangFullRepositoryVersion()); 4504 4505 // Also include the serialization version, in case LLVM_APPEND_VC_REV is off 4506 // and getClangFullRepositoryVersion() doesn't include git revision. 4507 HBuilder.add(serialization::VERSION_MAJOR, serialization::VERSION_MINOR); 4508 4509 // Extend the signature with the language options 4510 #define LANGOPT(Name, Bits, Default, Description) HBuilder.add(LangOpts->Name); 4511 #define ENUM_LANGOPT(Name, Type, Bits, Default, Description) \ 4512 HBuilder.add(static_cast<unsigned>(LangOpts->get##Name())); 4513 #define BENIGN_LANGOPT(Name, Bits, Default, Description) 4514 #define BENIGN_ENUM_LANGOPT(Name, Type, Bits, Default, Description) 4515 #include "clang/Basic/LangOptions.def" 4516 4517 HBuilder.addRange(LangOpts->ModuleFeatures); 4518 4519 HBuilder.add(LangOpts->ObjCRuntime); 4520 HBuilder.addRange(LangOpts->CommentOpts.BlockCommandNames); 4521 4522 // Extend the signature with the target options. 4523 HBuilder.add(TargetOpts->Triple, TargetOpts->CPU, TargetOpts->TuneCPU, 4524 TargetOpts->ABI); 4525 HBuilder.addRange(TargetOpts->FeaturesAsWritten); 4526 4527 // Extend the signature with preprocessor options. 4528 const PreprocessorOptions &ppOpts = getPreprocessorOpts(); 4529 HBuilder.add(ppOpts.UsePredefines, ppOpts.DetailedRecord); 4530 4531 const HeaderSearchOptions &hsOpts = getHeaderSearchOpts(); 4532 for (const auto &Macro : getPreprocessorOpts().Macros) { 4533 // If we're supposed to ignore this macro for the purposes of modules, 4534 // don't put it into the hash. 4535 if (!hsOpts.ModulesIgnoreMacros.empty()) { 4536 // Check whether we're ignoring this macro. 4537 StringRef MacroDef = Macro.first; 4538 if (hsOpts.ModulesIgnoreMacros.count( 4539 llvm::CachedHashString(MacroDef.split('=').first))) 4540 continue; 4541 } 4542 4543 HBuilder.add(Macro); 4544 } 4545 4546 // Extend the signature with the sysroot and other header search options. 4547 HBuilder.add(hsOpts.Sysroot, hsOpts.ModuleFormat, hsOpts.UseDebugInfo, 4548 hsOpts.UseBuiltinIncludes, hsOpts.UseStandardSystemIncludes, 4549 hsOpts.UseStandardCXXIncludes, hsOpts.UseLibcxx, 4550 hsOpts.ModulesValidateDiagnosticOptions); 4551 HBuilder.add(hsOpts.ResourceDir); 4552 4553 if (hsOpts.ModulesStrictContextHash) { 4554 HBuilder.addRange(hsOpts.SystemHeaderPrefixes); 4555 HBuilder.addRange(hsOpts.UserEntries); 4556 4557 const DiagnosticOptions &diagOpts = getDiagnosticOpts(); 4558 #define DIAGOPT(Name, Bits, Default) HBuilder.add(diagOpts.Name); 4559 #define ENUM_DIAGOPT(Name, Type, Bits, Default) \ 4560 HBuilder.add(diagOpts.get##Name()); 4561 #include "clang/Basic/DiagnosticOptions.def" 4562 #undef DIAGOPT 4563 #undef ENUM_DIAGOPT 4564 } 4565 4566 // Extend the signature with the user build path. 4567 HBuilder.add(hsOpts.ModuleUserBuildPath); 4568 4569 // Extend the signature with the module file extensions. 4570 for (const auto &ext : getFrontendOpts().ModuleFileExtensions) 4571 ext->hashExtension(HBuilder); 4572 4573 // When compiling with -gmodules, also hash -fdebug-prefix-map as it 4574 // affects the debug info in the PCM. 4575 if (getCodeGenOpts().DebugTypeExtRefs) 4576 HBuilder.addRange(getCodeGenOpts().DebugPrefixMap); 4577 4578 // Extend the signature with the enabled sanitizers, if at least one is 4579 // enabled. Sanitizers which cannot affect AST generation aren't hashed. 4580 SanitizerSet SanHash = LangOpts->Sanitize; 4581 SanHash.clear(getPPTransparentSanitizers()); 4582 if (!SanHash.empty()) 4583 HBuilder.add(SanHash.Mask); 4584 4585 llvm::MD5::MD5Result Result; 4586 HBuilder.getHasher().final(Result); 4587 uint64_t Hash = Result.high() ^ Result.low(); 4588 return toString(llvm::APInt(64, Hash), 36, /*Signed=*/false); 4589 } 4590 4591 void CompilerInvocation::generateCC1CommandLine( 4592 ArgumentConsumer Consumer) const { 4593 llvm::Triple T(TargetOpts->Triple); 4594 4595 GenerateFileSystemArgs(FileSystemOpts, Consumer); 4596 GenerateMigratorArgs(MigratorOpts, Consumer); 4597 GenerateAnalyzerArgs(*AnalyzerOpts, Consumer); 4598 GenerateDiagnosticArgs(*DiagnosticOpts, Consumer, false); 4599 GenerateFrontendArgs(FrontendOpts, Consumer, LangOpts->IsHeaderFile); 4600 GenerateTargetArgs(*TargetOpts, Consumer); 4601 GenerateHeaderSearchArgs(*HeaderSearchOpts, Consumer); 4602 GenerateLangArgs(*LangOpts, Consumer, T, FrontendOpts.DashX); 4603 GenerateCodeGenArgs(CodeGenOpts, Consumer, T, FrontendOpts.OutputFile, 4604 &*LangOpts); 4605 GeneratePreprocessorArgs(*PreprocessorOpts, Consumer, *LangOpts, FrontendOpts, 4606 CodeGenOpts); 4607 GeneratePreprocessorOutputArgs(PreprocessorOutputOpts, Consumer, 4608 FrontendOpts.ProgramAction); 4609 GenerateDependencyOutputArgs(DependencyOutputOpts, Consumer); 4610 } 4611 4612 std::vector<std::string> CompilerInvocation::getCC1CommandLine() const { 4613 std::vector<std::string> Args{"-cc1"}; 4614 generateCC1CommandLine( 4615 [&Args](const Twine &Arg) { Args.push_back(Arg.str()); }); 4616 return Args; 4617 } 4618 4619 void CompilerInvocation::resetNonModularOptions() { 4620 getLangOpts()->resetNonModularOptions(); 4621 getPreprocessorOpts().resetNonModularOptions(); 4622 } 4623 4624 void CompilerInvocation::clearImplicitModuleBuildOptions() { 4625 getLangOpts()->ImplicitModules = false; 4626 getHeaderSearchOpts().ImplicitModuleMaps = false; 4627 getHeaderSearchOpts().ModuleCachePath.clear(); 4628 getHeaderSearchOpts().ModulesValidateOncePerBuildSession = false; 4629 getHeaderSearchOpts().BuildSessionTimestamp = 0; 4630 // The specific values we canonicalize to for pruning don't affect behaviour, 4631 /// so use the default values so they may be dropped from the command-line. 4632 getHeaderSearchOpts().ModuleCachePruneInterval = 7 * 24 * 60 * 60; 4633 getHeaderSearchOpts().ModuleCachePruneAfter = 31 * 24 * 60 * 60; 4634 } 4635 4636 IntrusiveRefCntPtr<llvm::vfs::FileSystem> 4637 clang::createVFSFromCompilerInvocation(const CompilerInvocation &CI, 4638 DiagnosticsEngine &Diags) { 4639 return createVFSFromCompilerInvocation(CI, Diags, 4640 llvm::vfs::getRealFileSystem()); 4641 } 4642 4643 IntrusiveRefCntPtr<llvm::vfs::FileSystem> 4644 clang::createVFSFromCompilerInvocation( 4645 const CompilerInvocation &CI, DiagnosticsEngine &Diags, 4646 IntrusiveRefCntPtr<llvm::vfs::FileSystem> BaseFS) { 4647 return createVFSFromOverlayFiles(CI.getHeaderSearchOpts().VFSOverlayFiles, 4648 Diags, std::move(BaseFS)); 4649 } 4650 4651 IntrusiveRefCntPtr<llvm::vfs::FileSystem> clang::createVFSFromOverlayFiles( 4652 ArrayRef<std::string> VFSOverlayFiles, DiagnosticsEngine &Diags, 4653 IntrusiveRefCntPtr<llvm::vfs::FileSystem> BaseFS) { 4654 if (VFSOverlayFiles.empty()) 4655 return BaseFS; 4656 4657 IntrusiveRefCntPtr<llvm::vfs::FileSystem> Result = BaseFS; 4658 // earlier vfs files are on the bottom 4659 for (const auto &File : VFSOverlayFiles) { 4660 llvm::ErrorOr<std::unique_ptr<llvm::MemoryBuffer>> Buffer = 4661 Result->getBufferForFile(File); 4662 if (!Buffer) { 4663 Diags.Report(diag::err_missing_vfs_overlay_file) << File; 4664 continue; 4665 } 4666 4667 IntrusiveRefCntPtr<llvm::vfs::FileSystem> FS = llvm::vfs::getVFSFromYAML( 4668 std::move(Buffer.get()), /*DiagHandler*/ nullptr, File, 4669 /*DiagContext*/ nullptr, Result); 4670 if (!FS) { 4671 Diags.Report(diag::err_invalid_vfs_overlay) << File; 4672 continue; 4673 } 4674 4675 Result = FS; 4676 } 4677 return Result; 4678 } 4679