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 #define SIMPLE_ENUM_VALUE_TABLE 169 #include "clang/Driver/Options.inc" 170 #undef SIMPLE_ENUM_VALUE_TABLE 171 172 static std::optional<bool> normalizeSimpleFlag(OptSpecifier Opt, 173 unsigned TableIndex, 174 const ArgList &Args, 175 DiagnosticsEngine &Diags) { 176 if (Args.hasArg(Opt)) 177 return true; 178 return std::nullopt; 179 } 180 181 static std::optional<bool> normalizeSimpleNegativeFlag(OptSpecifier Opt, 182 unsigned, 183 const ArgList &Args, 184 DiagnosticsEngine &) { 185 if (Args.hasArg(Opt)) 186 return false; 187 return std::nullopt; 188 } 189 190 /// The tblgen-erated code passes in a fifth parameter of an arbitrary type, but 191 /// denormalizeSimpleFlags never looks at it. Avoid bloating compile-time with 192 /// unnecessary template instantiations and just ignore it with a variadic 193 /// argument. 194 static void denormalizeSimpleFlag(SmallVectorImpl<const char *> &Args, 195 const char *Spelling, 196 CompilerInvocation::StringAllocator, 197 Option::OptionClass, unsigned, /*T*/...) { 198 Args.push_back(Spelling); 199 } 200 201 template <typename T> static constexpr bool is_uint64_t_convertible() { 202 return !std::is_same_v<T, uint64_t> && llvm::is_integral_or_enum<T>::value; 203 } 204 205 template <typename T, 206 std::enable_if_t<!is_uint64_t_convertible<T>(), bool> = false> 207 static auto makeFlagToValueNormalizer(T Value) { 208 return [Value](OptSpecifier Opt, unsigned, const ArgList &Args, 209 DiagnosticsEngine &) -> std::optional<T> { 210 if (Args.hasArg(Opt)) 211 return Value; 212 return std::nullopt; 213 }; 214 } 215 216 template <typename T, 217 std::enable_if_t<is_uint64_t_convertible<T>(), bool> = false> 218 static auto makeFlagToValueNormalizer(T Value) { 219 return makeFlagToValueNormalizer(uint64_t(Value)); 220 } 221 222 static auto makeBooleanOptionNormalizer(bool Value, bool OtherValue, 223 OptSpecifier OtherOpt) { 224 return [Value, OtherValue, 225 OtherOpt](OptSpecifier Opt, unsigned, const ArgList &Args, 226 DiagnosticsEngine &) -> std::optional<bool> { 227 if (const Arg *A = Args.getLastArg(Opt, OtherOpt)) { 228 return A->getOption().matches(Opt) ? Value : OtherValue; 229 } 230 return std::nullopt; 231 }; 232 } 233 234 static auto makeBooleanOptionDenormalizer(bool Value) { 235 return [Value](SmallVectorImpl<const char *> &Args, const char *Spelling, 236 CompilerInvocation::StringAllocator, Option::OptionClass, 237 unsigned, bool KeyPath) { 238 if (KeyPath == Value) 239 Args.push_back(Spelling); 240 }; 241 } 242 243 static void denormalizeStringImpl(SmallVectorImpl<const char *> &Args, 244 const char *Spelling, 245 CompilerInvocation::StringAllocator SA, 246 Option::OptionClass OptClass, unsigned, 247 const Twine &Value) { 248 switch (OptClass) { 249 case Option::SeparateClass: 250 case Option::JoinedOrSeparateClass: 251 case Option::JoinedAndSeparateClass: 252 Args.push_back(Spelling); 253 Args.push_back(SA(Value)); 254 break; 255 case Option::JoinedClass: 256 case Option::CommaJoinedClass: 257 Args.push_back(SA(Twine(Spelling) + Value)); 258 break; 259 default: 260 llvm_unreachable("Cannot denormalize an option with option class " 261 "incompatible with string denormalization."); 262 } 263 } 264 265 template <typename T> 266 static void 267 denormalizeString(SmallVectorImpl<const char *> &Args, const char *Spelling, 268 CompilerInvocation::StringAllocator SA, 269 Option::OptionClass OptClass, unsigned TableIndex, T Value) { 270 denormalizeStringImpl(Args, Spelling, SA, OptClass, TableIndex, Twine(Value)); 271 } 272 273 static std::optional<SimpleEnumValue> 274 findValueTableByName(const SimpleEnumValueTable &Table, StringRef Name) { 275 for (int I = 0, E = Table.Size; I != E; ++I) 276 if (Name == Table.Table[I].Name) 277 return Table.Table[I]; 278 279 return std::nullopt; 280 } 281 282 static std::optional<SimpleEnumValue> 283 findValueTableByValue(const SimpleEnumValueTable &Table, unsigned Value) { 284 for (int I = 0, E = Table.Size; I != E; ++I) 285 if (Value == Table.Table[I].Value) 286 return Table.Table[I]; 287 288 return std::nullopt; 289 } 290 291 static std::optional<unsigned> normalizeSimpleEnum(OptSpecifier Opt, 292 unsigned TableIndex, 293 const ArgList &Args, 294 DiagnosticsEngine &Diags) { 295 assert(TableIndex < SimpleEnumValueTablesSize); 296 const SimpleEnumValueTable &Table = SimpleEnumValueTables[TableIndex]; 297 298 auto *Arg = Args.getLastArg(Opt); 299 if (!Arg) 300 return std::nullopt; 301 302 StringRef ArgValue = Arg->getValue(); 303 if (auto MaybeEnumVal = findValueTableByName(Table, ArgValue)) 304 return MaybeEnumVal->Value; 305 306 Diags.Report(diag::err_drv_invalid_value) 307 << Arg->getAsString(Args) << ArgValue; 308 return std::nullopt; 309 } 310 311 static void denormalizeSimpleEnumImpl(SmallVectorImpl<const char *> &Args, 312 const char *Spelling, 313 CompilerInvocation::StringAllocator SA, 314 Option::OptionClass OptClass, 315 unsigned TableIndex, unsigned Value) { 316 assert(TableIndex < SimpleEnumValueTablesSize); 317 const SimpleEnumValueTable &Table = SimpleEnumValueTables[TableIndex]; 318 if (auto MaybeEnumVal = findValueTableByValue(Table, Value)) { 319 denormalizeString(Args, Spelling, SA, OptClass, TableIndex, 320 MaybeEnumVal->Name); 321 } else { 322 llvm_unreachable("The simple enum value was not correctly defined in " 323 "the tablegen option description"); 324 } 325 } 326 327 template <typename T> 328 static void denormalizeSimpleEnum(SmallVectorImpl<const char *> &Args, 329 const char *Spelling, 330 CompilerInvocation::StringAllocator SA, 331 Option::OptionClass OptClass, 332 unsigned TableIndex, T Value) { 333 return denormalizeSimpleEnumImpl(Args, Spelling, SA, OptClass, TableIndex, 334 static_cast<unsigned>(Value)); 335 } 336 337 static std::optional<std::string> normalizeString(OptSpecifier Opt, 338 int TableIndex, 339 const ArgList &Args, 340 DiagnosticsEngine &Diags) { 341 auto *Arg = Args.getLastArg(Opt); 342 if (!Arg) 343 return std::nullopt; 344 return std::string(Arg->getValue()); 345 } 346 347 template <typename IntTy> 348 static std::optional<IntTy> normalizeStringIntegral(OptSpecifier Opt, int, 349 const ArgList &Args, 350 DiagnosticsEngine &Diags) { 351 auto *Arg = Args.getLastArg(Opt); 352 if (!Arg) 353 return std::nullopt; 354 IntTy Res; 355 if (StringRef(Arg->getValue()).getAsInteger(0, Res)) { 356 Diags.Report(diag::err_drv_invalid_int_value) 357 << Arg->getAsString(Args) << Arg->getValue(); 358 return std::nullopt; 359 } 360 return Res; 361 } 362 363 static std::optional<std::vector<std::string>> 364 normalizeStringVector(OptSpecifier Opt, int, const ArgList &Args, 365 DiagnosticsEngine &) { 366 return Args.getAllArgValues(Opt); 367 } 368 369 static void denormalizeStringVector(SmallVectorImpl<const char *> &Args, 370 const char *Spelling, 371 CompilerInvocation::StringAllocator SA, 372 Option::OptionClass OptClass, 373 unsigned TableIndex, 374 const std::vector<std::string> &Values) { 375 switch (OptClass) { 376 case Option::CommaJoinedClass: { 377 std::string CommaJoinedValue; 378 if (!Values.empty()) { 379 CommaJoinedValue.append(Values.front()); 380 for (const std::string &Value : llvm::drop_begin(Values, 1)) { 381 CommaJoinedValue.append(","); 382 CommaJoinedValue.append(Value); 383 } 384 } 385 denormalizeString(Args, Spelling, SA, Option::OptionClass::JoinedClass, 386 TableIndex, CommaJoinedValue); 387 break; 388 } 389 case Option::JoinedClass: 390 case Option::SeparateClass: 391 case Option::JoinedOrSeparateClass: 392 for (const std::string &Value : Values) 393 denormalizeString(Args, Spelling, SA, OptClass, TableIndex, Value); 394 break; 395 default: 396 llvm_unreachable("Cannot denormalize an option with option class " 397 "incompatible with string vector denormalization."); 398 } 399 } 400 401 static std::optional<std::string> normalizeTriple(OptSpecifier Opt, 402 int TableIndex, 403 const ArgList &Args, 404 DiagnosticsEngine &Diags) { 405 auto *Arg = Args.getLastArg(Opt); 406 if (!Arg) 407 return std::nullopt; 408 return llvm::Triple::normalize(Arg->getValue()); 409 } 410 411 template <typename T, typename U> 412 static T mergeForwardValue(T KeyPath, U Value) { 413 return static_cast<T>(Value); 414 } 415 416 template <typename T, typename U> static T mergeMaskValue(T KeyPath, U Value) { 417 return KeyPath | Value; 418 } 419 420 template <typename T> static T extractForwardValue(T KeyPath) { 421 return KeyPath; 422 } 423 424 template <typename T, typename U, U Value> 425 static T extractMaskValue(T KeyPath) { 426 return ((KeyPath & Value) == Value) ? static_cast<T>(Value) : T(); 427 } 428 429 #define PARSE_OPTION_WITH_MARSHALLING( \ 430 ARGS, DIAGS, PREFIX_TYPE, NAME, ID, KIND, GROUP, ALIAS, ALIASARGS, FLAGS, \ 431 PARAM, HELPTEXT, METAVAR, VALUES, SPELLING, SHOULD_PARSE, ALWAYS_EMIT, \ 432 KEYPATH, DEFAULT_VALUE, IMPLIED_CHECK, IMPLIED_VALUE, NORMALIZER, \ 433 DENORMALIZER, MERGER, EXTRACTOR, TABLE_INDEX) \ 434 if ((FLAGS)&options::CC1Option) { \ 435 KEYPATH = MERGER(KEYPATH, DEFAULT_VALUE); \ 436 if (IMPLIED_CHECK) \ 437 KEYPATH = MERGER(KEYPATH, IMPLIED_VALUE); \ 438 if (SHOULD_PARSE) \ 439 if (auto MaybeValue = NORMALIZER(OPT_##ID, TABLE_INDEX, ARGS, DIAGS)) \ 440 KEYPATH = \ 441 MERGER(KEYPATH, static_cast<decltype(KEYPATH)>(*MaybeValue)); \ 442 } 443 444 // Capture the extracted value as a lambda argument to avoid potential issues 445 // with lifetime extension of the reference. 446 #define GENERATE_OPTION_WITH_MARSHALLING( \ 447 ARGS, STRING_ALLOCATOR, PREFIX_TYPE, NAME, ID, KIND, GROUP, ALIAS, \ 448 ALIASARGS, FLAGS, PARAM, HELPTEXT, METAVAR, VALUES, SPELLING, \ 449 SHOULD_PARSE, ALWAYS_EMIT, KEYPATH, DEFAULT_VALUE, IMPLIED_CHECK, \ 450 IMPLIED_VALUE, NORMALIZER, DENORMALIZER, MERGER, EXTRACTOR, TABLE_INDEX) \ 451 if ((FLAGS)&options::CC1Option) { \ 452 [&](const auto &Extracted) { \ 453 if (ALWAYS_EMIT || \ 454 (Extracted != \ 455 static_cast<decltype(KEYPATH)>((IMPLIED_CHECK) ? (IMPLIED_VALUE) \ 456 : (DEFAULT_VALUE)))) \ 457 DENORMALIZER(ARGS, SPELLING, STRING_ALLOCATOR, Option::KIND##Class, \ 458 TABLE_INDEX, Extracted); \ 459 }(EXTRACTOR(KEYPATH)); \ 460 } 461 462 static StringRef GetInputKindName(InputKind IK); 463 464 static bool FixupInvocation(CompilerInvocation &Invocation, 465 DiagnosticsEngine &Diags, const ArgList &Args, 466 InputKind IK) { 467 unsigned NumErrorsBefore = Diags.getNumErrors(); 468 469 LangOptions &LangOpts = *Invocation.getLangOpts(); 470 CodeGenOptions &CodeGenOpts = Invocation.getCodeGenOpts(); 471 TargetOptions &TargetOpts = Invocation.getTargetOpts(); 472 FrontendOptions &FrontendOpts = Invocation.getFrontendOpts(); 473 CodeGenOpts.XRayInstrumentFunctions = LangOpts.XRayInstrument; 474 CodeGenOpts.XRayAlwaysEmitCustomEvents = LangOpts.XRayAlwaysEmitCustomEvents; 475 CodeGenOpts.XRayAlwaysEmitTypedEvents = LangOpts.XRayAlwaysEmitTypedEvents; 476 CodeGenOpts.DisableFree = FrontendOpts.DisableFree; 477 FrontendOpts.GenerateGlobalModuleIndex = FrontendOpts.UseGlobalModuleIndex; 478 if (FrontendOpts.ShowStats) 479 CodeGenOpts.ClearASTBeforeBackend = false; 480 LangOpts.SanitizeCoverage = CodeGenOpts.hasSanitizeCoverage(); 481 LangOpts.ForceEmitVTables = CodeGenOpts.ForceEmitVTables; 482 LangOpts.SpeculativeLoadHardening = CodeGenOpts.SpeculativeLoadHardening; 483 LangOpts.CurrentModule = LangOpts.ModuleName; 484 485 llvm::Triple T(TargetOpts.Triple); 486 llvm::Triple::ArchType Arch = T.getArch(); 487 488 CodeGenOpts.CodeModel = TargetOpts.CodeModel; 489 490 if (LangOpts.getExceptionHandling() != 491 LangOptions::ExceptionHandlingKind::None && 492 T.isWindowsMSVCEnvironment()) 493 Diags.Report(diag::err_fe_invalid_exception_model) 494 << static_cast<unsigned>(LangOpts.getExceptionHandling()) << T.str(); 495 496 if (LangOpts.AppleKext && !LangOpts.CPlusPlus) 497 Diags.Report(diag::warn_c_kext); 498 499 if (LangOpts.NewAlignOverride && 500 !llvm::isPowerOf2_32(LangOpts.NewAlignOverride)) { 501 Arg *A = Args.getLastArg(OPT_fnew_alignment_EQ); 502 Diags.Report(diag::err_fe_invalid_alignment) 503 << A->getAsString(Args) << A->getValue(); 504 LangOpts.NewAlignOverride = 0; 505 } 506 507 // Prevent the user from specifying both -fsycl-is-device and -fsycl-is-host. 508 if (LangOpts.SYCLIsDevice && LangOpts.SYCLIsHost) 509 Diags.Report(diag::err_drv_argument_not_allowed_with) << "-fsycl-is-device" 510 << "-fsycl-is-host"; 511 512 if (Args.hasArg(OPT_fgnu89_inline) && LangOpts.CPlusPlus) 513 Diags.Report(diag::err_drv_argument_not_allowed_with) 514 << "-fgnu89-inline" << GetInputKindName(IK); 515 516 if (Args.hasArg(OPT_hlsl_entrypoint) && !LangOpts.HLSL) 517 Diags.Report(diag::err_drv_argument_not_allowed_with) 518 << "-hlsl-entry" << GetInputKindName(IK); 519 520 if (Args.hasArg(OPT_fgpu_allow_device_init) && !LangOpts.HIP) 521 Diags.Report(diag::warn_ignored_hip_only_option) 522 << Args.getLastArg(OPT_fgpu_allow_device_init)->getAsString(Args); 523 524 if (Args.hasArg(OPT_gpu_max_threads_per_block_EQ) && !LangOpts.HIP) 525 Diags.Report(diag::warn_ignored_hip_only_option) 526 << Args.getLastArg(OPT_gpu_max_threads_per_block_EQ)->getAsString(Args); 527 528 // When these options are used, the compiler is allowed to apply 529 // optimizations that may affect the final result. For example 530 // (x+y)+z is transformed to x+(y+z) but may not give the same 531 // final result; it's not value safe. 532 // Another example can be to simplify x/x to 1.0 but x could be 0.0, INF 533 // or NaN. Final result may then differ. An error is issued when the eval 534 // method is set with one of these options. 535 if (Args.hasArg(OPT_ffp_eval_method_EQ)) { 536 if (LangOpts.ApproxFunc) 537 Diags.Report(diag::err_incompatible_fp_eval_method_options) << 0; 538 if (LangOpts.AllowFPReassoc) 539 Diags.Report(diag::err_incompatible_fp_eval_method_options) << 1; 540 if (LangOpts.AllowRecip) 541 Diags.Report(diag::err_incompatible_fp_eval_method_options) << 2; 542 } 543 544 // -cl-strict-aliasing needs to emit diagnostic in the case where CL > 1.0. 545 // This option should be deprecated for CL > 1.0 because 546 // this option was added for compatibility with OpenCL 1.0. 547 if (Args.getLastArg(OPT_cl_strict_aliasing) && 548 (LangOpts.getOpenCLCompatibleVersion() > 100)) 549 Diags.Report(diag::warn_option_invalid_ocl_version) 550 << LangOpts.getOpenCLVersionString() 551 << Args.getLastArg(OPT_cl_strict_aliasing)->getAsString(Args); 552 553 if (Arg *A = Args.getLastArg(OPT_fdefault_calling_conv_EQ)) { 554 auto DefaultCC = LangOpts.getDefaultCallingConv(); 555 556 bool emitError = (DefaultCC == LangOptions::DCC_FastCall || 557 DefaultCC == LangOptions::DCC_StdCall) && 558 Arch != llvm::Triple::x86; 559 emitError |= (DefaultCC == LangOptions::DCC_VectorCall || 560 DefaultCC == LangOptions::DCC_RegCall) && 561 !T.isX86(); 562 if (emitError) 563 Diags.Report(diag::err_drv_argument_not_allowed_with) 564 << A->getSpelling() << T.getTriple(); 565 } 566 567 return Diags.getNumErrors() == NumErrorsBefore; 568 } 569 570 //===----------------------------------------------------------------------===// 571 // Deserialization (from args) 572 //===----------------------------------------------------------------------===// 573 574 static unsigned getOptimizationLevel(ArgList &Args, InputKind IK, 575 DiagnosticsEngine &Diags) { 576 unsigned DefaultOpt = llvm::CodeGenOpt::None; 577 if ((IK.getLanguage() == Language::OpenCL || 578 IK.getLanguage() == Language::OpenCLCXX) && 579 !Args.hasArg(OPT_cl_opt_disable)) 580 DefaultOpt = llvm::CodeGenOpt::Default; 581 582 if (Arg *A = Args.getLastArg(options::OPT_O_Group)) { 583 if (A->getOption().matches(options::OPT_O0)) 584 return llvm::CodeGenOpt::None; 585 586 if (A->getOption().matches(options::OPT_Ofast)) 587 return llvm::CodeGenOpt::Aggressive; 588 589 assert(A->getOption().matches(options::OPT_O)); 590 591 StringRef S(A->getValue()); 592 if (S == "s" || S == "z") 593 return llvm::CodeGenOpt::Default; 594 595 if (S == "g") 596 return llvm::CodeGenOpt::Less; 597 598 return getLastArgIntValue(Args, OPT_O, DefaultOpt, Diags); 599 } 600 601 return DefaultOpt; 602 } 603 604 static unsigned getOptimizationLevelSize(ArgList &Args) { 605 if (Arg *A = Args.getLastArg(options::OPT_O_Group)) { 606 if (A->getOption().matches(options::OPT_O)) { 607 switch (A->getValue()[0]) { 608 default: 609 return 0; 610 case 's': 611 return 1; 612 case 'z': 613 return 2; 614 } 615 } 616 } 617 return 0; 618 } 619 620 static void GenerateArg(SmallVectorImpl<const char *> &Args, 621 llvm::opt::OptSpecifier OptSpecifier, 622 CompilerInvocation::StringAllocator SA) { 623 Option Opt = getDriverOptTable().getOption(OptSpecifier); 624 denormalizeSimpleFlag(Args, SA(Opt.getPrefix() + Opt.getName()), SA, 625 Option::OptionClass::FlagClass, 0); 626 } 627 628 static void GenerateArg(SmallVectorImpl<const char *> &Args, 629 llvm::opt::OptSpecifier OptSpecifier, 630 const Twine &Value, 631 CompilerInvocation::StringAllocator SA) { 632 Option Opt = getDriverOptTable().getOption(OptSpecifier); 633 denormalizeString(Args, SA(Opt.getPrefix() + Opt.getName()), SA, 634 Opt.getKind(), 0, Value); 635 } 636 637 // Parse command line arguments into CompilerInvocation. 638 using ParseFn = 639 llvm::function_ref<bool(CompilerInvocation &, ArrayRef<const char *>, 640 DiagnosticsEngine &, const char *)>; 641 642 // Generate command line arguments from CompilerInvocation. 643 using GenerateFn = llvm::function_ref<void( 644 CompilerInvocation &, SmallVectorImpl<const char *> &, 645 CompilerInvocation::StringAllocator)>; 646 647 /// May perform round-trip of command line arguments. By default, the round-trip 648 /// is enabled in assert builds. This can be overwritten at run-time via the 649 /// "-round-trip-args" and "-no-round-trip-args" command line flags, or via the 650 /// ForceRoundTrip parameter. 651 /// 652 /// During round-trip, the command line arguments are parsed into a dummy 653 /// CompilerInvocation, which is used to generate the command line arguments 654 /// again. The real CompilerInvocation is then created by parsing the generated 655 /// arguments, not the original ones. This (in combination with tests covering 656 /// argument behavior) ensures the generated command line is complete (doesn't 657 /// drop/mangle any arguments). 658 /// 659 /// Finally, we check the command line that was used to create the real 660 /// CompilerInvocation instance. By default, we compare it to the command line 661 /// the real CompilerInvocation generates. This checks whether the generator is 662 /// deterministic. If \p CheckAgainstOriginalInvocation is enabled, we instead 663 /// compare it to the original command line to verify the original command-line 664 /// was canonical and can round-trip exactly. 665 static bool RoundTrip(ParseFn Parse, GenerateFn Generate, 666 CompilerInvocation &RealInvocation, 667 CompilerInvocation &DummyInvocation, 668 ArrayRef<const char *> CommandLineArgs, 669 DiagnosticsEngine &Diags, const char *Argv0, 670 bool CheckAgainstOriginalInvocation = false, 671 bool ForceRoundTrip = false) { 672 #ifndef NDEBUG 673 bool DoRoundTripDefault = true; 674 #else 675 bool DoRoundTripDefault = false; 676 #endif 677 678 bool DoRoundTrip = DoRoundTripDefault; 679 if (ForceRoundTrip) { 680 DoRoundTrip = true; 681 } else { 682 for (const auto *Arg : CommandLineArgs) { 683 if (Arg == StringRef("-round-trip-args")) 684 DoRoundTrip = true; 685 if (Arg == StringRef("-no-round-trip-args")) 686 DoRoundTrip = false; 687 } 688 } 689 690 // If round-trip was not requested, simply run the parser with the real 691 // invocation diagnostics. 692 if (!DoRoundTrip) 693 return Parse(RealInvocation, CommandLineArgs, Diags, Argv0); 694 695 // Serializes quoted (and potentially escaped) arguments. 696 auto SerializeArgs = [](ArrayRef<const char *> Args) { 697 std::string Buffer; 698 llvm::raw_string_ostream OS(Buffer); 699 for (const char *Arg : Args) { 700 llvm::sys::printArg(OS, Arg, /*Quote=*/true); 701 OS << ' '; 702 } 703 OS.flush(); 704 return Buffer; 705 }; 706 707 // Setup a dummy DiagnosticsEngine. 708 DiagnosticsEngine DummyDiags(new DiagnosticIDs(), new DiagnosticOptions()); 709 DummyDiags.setClient(new TextDiagnosticBuffer()); 710 711 // Run the first parse on the original arguments with the dummy invocation and 712 // diagnostics. 713 if (!Parse(DummyInvocation, CommandLineArgs, DummyDiags, Argv0) || 714 DummyDiags.getNumWarnings() != 0) { 715 // If the first parse did not succeed, it must be user mistake (invalid 716 // command line arguments). We won't be able to generate arguments that 717 // would reproduce the same result. Let's fail again with the real 718 // invocation and diagnostics, so all side-effects of parsing are visible. 719 unsigned NumWarningsBefore = Diags.getNumWarnings(); 720 auto Success = Parse(RealInvocation, CommandLineArgs, Diags, Argv0); 721 if (!Success || Diags.getNumWarnings() != NumWarningsBefore) 722 return Success; 723 724 // Parse with original options and diagnostics succeeded even though it 725 // shouldn't have. Something is off. 726 Diags.Report(diag::err_cc1_round_trip_fail_then_ok); 727 Diags.Report(diag::note_cc1_round_trip_original) 728 << SerializeArgs(CommandLineArgs); 729 return false; 730 } 731 732 // Setup string allocator. 733 llvm::BumpPtrAllocator Alloc; 734 llvm::StringSaver StringPool(Alloc); 735 auto SA = [&StringPool](const Twine &Arg) { 736 return StringPool.save(Arg).data(); 737 }; 738 739 // Generate arguments from the dummy invocation. If Generate is the 740 // inverse of Parse, the newly generated arguments must have the same 741 // semantics as the original. 742 SmallVector<const char *> GeneratedArgs; 743 Generate(DummyInvocation, GeneratedArgs, SA); 744 745 // Run the second parse, now on the generated arguments, and with the real 746 // invocation and diagnostics. The result is what we will end up using for the 747 // rest of compilation, so if Generate is not inverse of Parse, something down 748 // the line will break. 749 bool Success2 = Parse(RealInvocation, GeneratedArgs, Diags, Argv0); 750 751 // The first parse on original arguments succeeded, but second parse of 752 // generated arguments failed. Something must be wrong with the generator. 753 if (!Success2) { 754 Diags.Report(diag::err_cc1_round_trip_ok_then_fail); 755 Diags.Report(diag::note_cc1_round_trip_generated) 756 << 1 << SerializeArgs(GeneratedArgs); 757 return false; 758 } 759 760 SmallVector<const char *> ComparisonArgs; 761 if (CheckAgainstOriginalInvocation) 762 // Compare against original arguments. 763 ComparisonArgs.assign(CommandLineArgs.begin(), CommandLineArgs.end()); 764 else 765 // Generate arguments again, this time from the options we will end up using 766 // for the rest of the compilation. 767 Generate(RealInvocation, ComparisonArgs, SA); 768 769 // Compares two lists of arguments. 770 auto Equal = [](const ArrayRef<const char *> A, 771 const ArrayRef<const char *> B) { 772 return std::equal(A.begin(), A.end(), B.begin(), B.end(), 773 [](const char *AElem, const char *BElem) { 774 return StringRef(AElem) == StringRef(BElem); 775 }); 776 }; 777 778 // If we generated different arguments from what we assume are two 779 // semantically equivalent CompilerInvocations, the Generate function may 780 // be non-deterministic. 781 if (!Equal(GeneratedArgs, ComparisonArgs)) { 782 Diags.Report(diag::err_cc1_round_trip_mismatch); 783 Diags.Report(diag::note_cc1_round_trip_generated) 784 << 1 << SerializeArgs(GeneratedArgs); 785 Diags.Report(diag::note_cc1_round_trip_generated) 786 << 2 << SerializeArgs(ComparisonArgs); 787 return false; 788 } 789 790 Diags.Report(diag::remark_cc1_round_trip_generated) 791 << 1 << SerializeArgs(GeneratedArgs); 792 Diags.Report(diag::remark_cc1_round_trip_generated) 793 << 2 << SerializeArgs(ComparisonArgs); 794 795 return Success2; 796 } 797 798 bool CompilerInvocation::checkCC1RoundTrip(ArrayRef<const char *> Args, 799 DiagnosticsEngine &Diags, 800 const char *Argv0) { 801 CompilerInvocation DummyInvocation1, DummyInvocation2; 802 return RoundTrip( 803 [](CompilerInvocation &Invocation, ArrayRef<const char *> CommandLineArgs, 804 DiagnosticsEngine &Diags, const char *Argv0) { 805 return CreateFromArgsImpl(Invocation, CommandLineArgs, Diags, Argv0); 806 }, 807 [](CompilerInvocation &Invocation, SmallVectorImpl<const char *> &Args, 808 StringAllocator SA) { 809 Args.push_back("-cc1"); 810 Invocation.generateCC1CommandLine(Args, SA); 811 }, 812 DummyInvocation1, DummyInvocation2, Args, Diags, Argv0, 813 /*CheckAgainstOriginalInvocation=*/true, /*ForceRoundTrip=*/true); 814 } 815 816 static void addDiagnosticArgs(ArgList &Args, OptSpecifier Group, 817 OptSpecifier GroupWithValue, 818 std::vector<std::string> &Diagnostics) { 819 for (auto *A : Args.filtered(Group)) { 820 if (A->getOption().getKind() == Option::FlagClass) { 821 // The argument is a pure flag (such as OPT_Wall or OPT_Wdeprecated). Add 822 // its name (minus the "W" or "R" at the beginning) to the diagnostics. 823 Diagnostics.push_back( 824 std::string(A->getOption().getName().drop_front(1))); 825 } else if (A->getOption().matches(GroupWithValue)) { 826 // This is -Wfoo= or -Rfoo=, where foo is the name of the diagnostic 827 // group. Add only the group name to the diagnostics. 828 Diagnostics.push_back( 829 std::string(A->getOption().getName().drop_front(1).rtrim("=-"))); 830 } else { 831 // Otherwise, add its value (for OPT_W_Joined and similar). 832 Diagnostics.push_back(A->getValue()); 833 } 834 } 835 } 836 837 // Parse the Static Analyzer configuration. If \p Diags is set to nullptr, 838 // it won't verify the input. 839 static void parseAnalyzerConfigs(AnalyzerOptions &AnOpts, 840 DiagnosticsEngine *Diags); 841 842 static void getAllNoBuiltinFuncValues(ArgList &Args, 843 std::vector<std::string> &Funcs) { 844 std::vector<std::string> Values = Args.getAllArgValues(OPT_fno_builtin_); 845 auto BuiltinEnd = llvm::partition(Values, Builtin::Context::isBuiltinFunc); 846 Funcs.insert(Funcs.end(), Values.begin(), BuiltinEnd); 847 } 848 849 static void GenerateAnalyzerArgs(AnalyzerOptions &Opts, 850 SmallVectorImpl<const char *> &Args, 851 CompilerInvocation::StringAllocator SA) { 852 const AnalyzerOptions *AnalyzerOpts = &Opts; 853 854 #define ANALYZER_OPTION_WITH_MARSHALLING(...) \ 855 GENERATE_OPTION_WITH_MARSHALLING(Args, SA, __VA_ARGS__) 856 #include "clang/Driver/Options.inc" 857 #undef ANALYZER_OPTION_WITH_MARSHALLING 858 859 if (Opts.AnalysisConstraintsOpt != RangeConstraintsModel) { 860 switch (Opts.AnalysisConstraintsOpt) { 861 #define ANALYSIS_CONSTRAINTS(NAME, CMDFLAG, DESC, CREATFN) \ 862 case NAME##Model: \ 863 GenerateArg(Args, OPT_analyzer_constraints, CMDFLAG, SA); \ 864 break; 865 #include "clang/StaticAnalyzer/Core/Analyses.def" 866 default: 867 llvm_unreachable("Tried to generate unknown analysis constraint."); 868 } 869 } 870 871 if (Opts.AnalysisDiagOpt != PD_HTML) { 872 switch (Opts.AnalysisDiagOpt) { 873 #define ANALYSIS_DIAGNOSTICS(NAME, CMDFLAG, DESC, CREATFN) \ 874 case PD_##NAME: \ 875 GenerateArg(Args, OPT_analyzer_output, CMDFLAG, SA); \ 876 break; 877 #include "clang/StaticAnalyzer/Core/Analyses.def" 878 default: 879 llvm_unreachable("Tried to generate unknown analysis diagnostic client."); 880 } 881 } 882 883 if (Opts.AnalysisPurgeOpt != PurgeStmt) { 884 switch (Opts.AnalysisPurgeOpt) { 885 #define ANALYSIS_PURGE(NAME, CMDFLAG, DESC) \ 886 case NAME: \ 887 GenerateArg(Args, OPT_analyzer_purge, CMDFLAG, SA); \ 888 break; 889 #include "clang/StaticAnalyzer/Core/Analyses.def" 890 default: 891 llvm_unreachable("Tried to generate unknown analysis purge mode."); 892 } 893 } 894 895 if (Opts.InliningMode != NoRedundancy) { 896 switch (Opts.InliningMode) { 897 #define ANALYSIS_INLINING_MODE(NAME, CMDFLAG, DESC) \ 898 case NAME: \ 899 GenerateArg(Args, OPT_analyzer_inlining_mode, CMDFLAG, SA); \ 900 break; 901 #include "clang/StaticAnalyzer/Core/Analyses.def" 902 default: 903 llvm_unreachable("Tried to generate unknown analysis inlining mode."); 904 } 905 } 906 907 for (const auto &CP : Opts.CheckersAndPackages) { 908 OptSpecifier Opt = 909 CP.second ? OPT_analyzer_checker : OPT_analyzer_disable_checker; 910 GenerateArg(Args, Opt, CP.first, SA); 911 } 912 913 AnalyzerOptions ConfigOpts; 914 parseAnalyzerConfigs(ConfigOpts, nullptr); 915 916 // Sort options by key to avoid relying on StringMap iteration order. 917 SmallVector<std::pair<StringRef, StringRef>, 4> SortedConfigOpts; 918 for (const auto &C : Opts.Config) 919 SortedConfigOpts.emplace_back(C.getKey(), C.getValue()); 920 llvm::sort(SortedConfigOpts, llvm::less_first()); 921 922 for (const auto &[Key, Value] : SortedConfigOpts) { 923 // Don't generate anything that came from parseAnalyzerConfigs. It would be 924 // redundant and may not be valid on the command line. 925 auto Entry = ConfigOpts.Config.find(Key); 926 if (Entry != ConfigOpts.Config.end() && Entry->getValue() == Value) 927 continue; 928 929 GenerateArg(Args, OPT_analyzer_config, Key + "=" + Value, SA); 930 } 931 932 // Nothing to generate for FullCompilerInvocation. 933 } 934 935 static bool ParseAnalyzerArgs(AnalyzerOptions &Opts, ArgList &Args, 936 DiagnosticsEngine &Diags) { 937 unsigned NumErrorsBefore = Diags.getNumErrors(); 938 939 AnalyzerOptions *AnalyzerOpts = &Opts; 940 941 #define ANALYZER_OPTION_WITH_MARSHALLING(...) \ 942 PARSE_OPTION_WITH_MARSHALLING(Args, Diags, __VA_ARGS__) 943 #include "clang/Driver/Options.inc" 944 #undef ANALYZER_OPTION_WITH_MARSHALLING 945 946 if (Arg *A = Args.getLastArg(OPT_analyzer_constraints)) { 947 StringRef Name = A->getValue(); 948 AnalysisConstraints Value = llvm::StringSwitch<AnalysisConstraints>(Name) 949 #define ANALYSIS_CONSTRAINTS(NAME, CMDFLAG, DESC, CREATFN) \ 950 .Case(CMDFLAG, NAME##Model) 951 #include "clang/StaticAnalyzer/Core/Analyses.def" 952 .Default(NumConstraints); 953 if (Value == NumConstraints) { 954 Diags.Report(diag::err_drv_invalid_value) 955 << A->getAsString(Args) << Name; 956 } else { 957 #ifndef LLVM_WITH_Z3 958 if (Value == AnalysisConstraints::Z3ConstraintsModel) { 959 Diags.Report(diag::err_analyzer_not_built_with_z3); 960 } 961 #endif // LLVM_WITH_Z3 962 Opts.AnalysisConstraintsOpt = Value; 963 } 964 } 965 966 if (Arg *A = Args.getLastArg(OPT_analyzer_output)) { 967 StringRef Name = A->getValue(); 968 AnalysisDiagClients Value = llvm::StringSwitch<AnalysisDiagClients>(Name) 969 #define ANALYSIS_DIAGNOSTICS(NAME, CMDFLAG, DESC, CREATFN) \ 970 .Case(CMDFLAG, PD_##NAME) 971 #include "clang/StaticAnalyzer/Core/Analyses.def" 972 .Default(NUM_ANALYSIS_DIAG_CLIENTS); 973 if (Value == NUM_ANALYSIS_DIAG_CLIENTS) { 974 Diags.Report(diag::err_drv_invalid_value) 975 << A->getAsString(Args) << Name; 976 } else { 977 Opts.AnalysisDiagOpt = Value; 978 } 979 } 980 981 if (Arg *A = Args.getLastArg(OPT_analyzer_purge)) { 982 StringRef Name = A->getValue(); 983 AnalysisPurgeMode Value = llvm::StringSwitch<AnalysisPurgeMode>(Name) 984 #define ANALYSIS_PURGE(NAME, CMDFLAG, DESC) \ 985 .Case(CMDFLAG, NAME) 986 #include "clang/StaticAnalyzer/Core/Analyses.def" 987 .Default(NumPurgeModes); 988 if (Value == NumPurgeModes) { 989 Diags.Report(diag::err_drv_invalid_value) 990 << A->getAsString(Args) << Name; 991 } else { 992 Opts.AnalysisPurgeOpt = Value; 993 } 994 } 995 996 if (Arg *A = Args.getLastArg(OPT_analyzer_inlining_mode)) { 997 StringRef Name = A->getValue(); 998 AnalysisInliningMode Value = llvm::StringSwitch<AnalysisInliningMode>(Name) 999 #define ANALYSIS_INLINING_MODE(NAME, CMDFLAG, DESC) \ 1000 .Case(CMDFLAG, NAME) 1001 #include "clang/StaticAnalyzer/Core/Analyses.def" 1002 .Default(NumInliningModes); 1003 if (Value == NumInliningModes) { 1004 Diags.Report(diag::err_drv_invalid_value) 1005 << A->getAsString(Args) << Name; 1006 } else { 1007 Opts.InliningMode = Value; 1008 } 1009 } 1010 1011 Opts.CheckersAndPackages.clear(); 1012 for (const Arg *A : 1013 Args.filtered(OPT_analyzer_checker, OPT_analyzer_disable_checker)) { 1014 A->claim(); 1015 bool IsEnabled = A->getOption().getID() == OPT_analyzer_checker; 1016 // We can have a list of comma separated checker names, e.g: 1017 // '-analyzer-checker=cocoa,unix' 1018 StringRef CheckerAndPackageList = A->getValue(); 1019 SmallVector<StringRef, 16> CheckersAndPackages; 1020 CheckerAndPackageList.split(CheckersAndPackages, ","); 1021 for (const StringRef &CheckerOrPackage : CheckersAndPackages) 1022 Opts.CheckersAndPackages.emplace_back(std::string(CheckerOrPackage), 1023 IsEnabled); 1024 } 1025 1026 // Go through the analyzer configuration options. 1027 for (const auto *A : Args.filtered(OPT_analyzer_config)) { 1028 1029 // We can have a list of comma separated config names, e.g: 1030 // '-analyzer-config key1=val1,key2=val2' 1031 StringRef configList = A->getValue(); 1032 SmallVector<StringRef, 4> configVals; 1033 configList.split(configVals, ","); 1034 for (const auto &configVal : configVals) { 1035 StringRef key, val; 1036 std::tie(key, val) = configVal.split("="); 1037 if (val.empty()) { 1038 Diags.Report(SourceLocation(), 1039 diag::err_analyzer_config_no_value) << configVal; 1040 break; 1041 } 1042 if (val.contains('=')) { 1043 Diags.Report(SourceLocation(), 1044 diag::err_analyzer_config_multiple_values) 1045 << configVal; 1046 break; 1047 } 1048 1049 // TODO: Check checker options too, possibly in CheckerRegistry. 1050 // Leave unknown non-checker configs unclaimed. 1051 if (!key.contains(":") && Opts.isUnknownAnalyzerConfig(key)) { 1052 if (Opts.ShouldEmitErrorsOnInvalidConfigValue) 1053 Diags.Report(diag::err_analyzer_config_unknown) << key; 1054 continue; 1055 } 1056 1057 A->claim(); 1058 Opts.Config[key] = std::string(val); 1059 1060 // FIXME: Remove this hunk after clang-17 released. 1061 constexpr auto SingleFAM = 1062 "consider-single-element-arrays-as-flexible-array-members"; 1063 if (key == SingleFAM) { 1064 Diags.Report(diag::warn_analyzer_deprecated_option_with_alternative) 1065 << SingleFAM << "clang-17" 1066 << "-fstrict-flex-arrays=<N>"; 1067 } 1068 } 1069 } 1070 1071 if (Opts.ShouldEmitErrorsOnInvalidConfigValue) 1072 parseAnalyzerConfigs(Opts, &Diags); 1073 else 1074 parseAnalyzerConfigs(Opts, nullptr); 1075 1076 llvm::raw_string_ostream os(Opts.FullCompilerInvocation); 1077 for (unsigned i = 0; i < Args.getNumInputArgStrings(); ++i) { 1078 if (i != 0) 1079 os << " "; 1080 os << Args.getArgString(i); 1081 } 1082 os.flush(); 1083 1084 return Diags.getNumErrors() == NumErrorsBefore; 1085 } 1086 1087 static StringRef getStringOption(AnalyzerOptions::ConfigTable &Config, 1088 StringRef OptionName, StringRef DefaultVal) { 1089 return Config.insert({OptionName, std::string(DefaultVal)}).first->second; 1090 } 1091 1092 static void initOption(AnalyzerOptions::ConfigTable &Config, 1093 DiagnosticsEngine *Diags, 1094 StringRef &OptionField, StringRef Name, 1095 StringRef DefaultVal) { 1096 // String options may be known to invalid (e.g. if the expected string is a 1097 // file name, but the file does not exist), those will have to be checked in 1098 // parseConfigs. 1099 OptionField = getStringOption(Config, Name, DefaultVal); 1100 } 1101 1102 static void initOption(AnalyzerOptions::ConfigTable &Config, 1103 DiagnosticsEngine *Diags, 1104 bool &OptionField, StringRef Name, bool DefaultVal) { 1105 auto PossiblyInvalidVal = 1106 llvm::StringSwitch<std::optional<bool>>( 1107 getStringOption(Config, Name, (DefaultVal ? "true" : "false"))) 1108 .Case("true", true) 1109 .Case("false", false) 1110 .Default(std::nullopt); 1111 1112 if (!PossiblyInvalidVal) { 1113 if (Diags) 1114 Diags->Report(diag::err_analyzer_config_invalid_input) 1115 << Name << "a boolean"; 1116 else 1117 OptionField = DefaultVal; 1118 } else 1119 OptionField = *PossiblyInvalidVal; 1120 } 1121 1122 static void initOption(AnalyzerOptions::ConfigTable &Config, 1123 DiagnosticsEngine *Diags, 1124 unsigned &OptionField, StringRef Name, 1125 unsigned DefaultVal) { 1126 1127 OptionField = DefaultVal; 1128 bool HasFailed = getStringOption(Config, Name, std::to_string(DefaultVal)) 1129 .getAsInteger(0, OptionField); 1130 if (Diags && HasFailed) 1131 Diags->Report(diag::err_analyzer_config_invalid_input) 1132 << Name << "an unsigned"; 1133 } 1134 1135 static void parseAnalyzerConfigs(AnalyzerOptions &AnOpts, 1136 DiagnosticsEngine *Diags) { 1137 // TODO: There's no need to store the entire configtable, it'd be plenty 1138 // enough to store checker options. 1139 1140 #define ANALYZER_OPTION(TYPE, NAME, CMDFLAG, DESC, DEFAULT_VAL) \ 1141 initOption(AnOpts.Config, Diags, AnOpts.NAME, CMDFLAG, DEFAULT_VAL); 1142 #define ANALYZER_OPTION_DEPENDS_ON_USER_MODE(...) 1143 #include "clang/StaticAnalyzer/Core/AnalyzerOptions.def" 1144 1145 assert(AnOpts.UserMode == "shallow" || AnOpts.UserMode == "deep"); 1146 const bool InShallowMode = AnOpts.UserMode == "shallow"; 1147 1148 #define ANALYZER_OPTION(...) 1149 #define ANALYZER_OPTION_DEPENDS_ON_USER_MODE(TYPE, NAME, CMDFLAG, DESC, \ 1150 SHALLOW_VAL, DEEP_VAL) \ 1151 initOption(AnOpts.Config, Diags, AnOpts.NAME, CMDFLAG, \ 1152 InShallowMode ? SHALLOW_VAL : DEEP_VAL); 1153 #include "clang/StaticAnalyzer/Core/AnalyzerOptions.def" 1154 1155 // At this point, AnalyzerOptions is configured. Let's validate some options. 1156 1157 // FIXME: Here we try to validate the silenced checkers or packages are valid. 1158 // The current approach only validates the registered checkers which does not 1159 // contain the runtime enabled checkers and optimally we would validate both. 1160 if (!AnOpts.RawSilencedCheckersAndPackages.empty()) { 1161 std::vector<StringRef> Checkers = 1162 AnOpts.getRegisteredCheckers(/*IncludeExperimental=*/true); 1163 std::vector<StringRef> Packages = 1164 AnOpts.getRegisteredPackages(/*IncludeExperimental=*/true); 1165 1166 SmallVector<StringRef, 16> CheckersAndPackages; 1167 AnOpts.RawSilencedCheckersAndPackages.split(CheckersAndPackages, ";"); 1168 1169 for (const StringRef &CheckerOrPackage : CheckersAndPackages) { 1170 if (Diags) { 1171 bool IsChecker = CheckerOrPackage.contains('.'); 1172 bool IsValidName = IsChecker 1173 ? llvm::is_contained(Checkers, CheckerOrPackage) 1174 : llvm::is_contained(Packages, CheckerOrPackage); 1175 1176 if (!IsValidName) 1177 Diags->Report(diag::err_unknown_analyzer_checker_or_package) 1178 << CheckerOrPackage; 1179 } 1180 1181 AnOpts.SilencedCheckersAndPackages.emplace_back(CheckerOrPackage); 1182 } 1183 } 1184 1185 if (!Diags) 1186 return; 1187 1188 if (AnOpts.ShouldTrackConditionsDebug && !AnOpts.ShouldTrackConditions) 1189 Diags->Report(diag::err_analyzer_config_invalid_input) 1190 << "track-conditions-debug" << "'track-conditions' to also be enabled"; 1191 1192 if (!AnOpts.CTUDir.empty() && !llvm::sys::fs::is_directory(AnOpts.CTUDir)) 1193 Diags->Report(diag::err_analyzer_config_invalid_input) << "ctu-dir" 1194 << "a filename"; 1195 1196 if (!AnOpts.ModelPath.empty() && 1197 !llvm::sys::fs::is_directory(AnOpts.ModelPath)) 1198 Diags->Report(diag::err_analyzer_config_invalid_input) << "model-path" 1199 << "a filename"; 1200 } 1201 1202 /// Generate a remark argument. This is an inverse of `ParseOptimizationRemark`. 1203 static void 1204 GenerateOptimizationRemark(SmallVectorImpl<const char *> &Args, 1205 CompilerInvocation::StringAllocator SA, 1206 OptSpecifier OptEQ, StringRef Name, 1207 const CodeGenOptions::OptRemark &Remark) { 1208 if (Remark.hasValidPattern()) { 1209 GenerateArg(Args, OptEQ, Remark.Pattern, SA); 1210 } else if (Remark.Kind == CodeGenOptions::RK_Enabled) { 1211 GenerateArg(Args, OPT_R_Joined, Name, SA); 1212 } else if (Remark.Kind == CodeGenOptions::RK_Disabled) { 1213 GenerateArg(Args, OPT_R_Joined, StringRef("no-") + Name, SA); 1214 } 1215 } 1216 1217 /// Parse a remark command line argument. It may be missing, disabled/enabled by 1218 /// '-R[no-]group' or specified with a regular expression by '-Rgroup=regexp'. 1219 /// On top of that, it can be disabled/enabled globally by '-R[no-]everything'. 1220 static CodeGenOptions::OptRemark 1221 ParseOptimizationRemark(DiagnosticsEngine &Diags, ArgList &Args, 1222 OptSpecifier OptEQ, StringRef Name) { 1223 CodeGenOptions::OptRemark Result; 1224 1225 auto InitializeResultPattern = [&Diags, &Args, &Result](const Arg *A, 1226 StringRef Pattern) { 1227 Result.Pattern = Pattern.str(); 1228 1229 std::string RegexError; 1230 Result.Regex = std::make_shared<llvm::Regex>(Result.Pattern); 1231 if (!Result.Regex->isValid(RegexError)) { 1232 Diags.Report(diag::err_drv_optimization_remark_pattern) 1233 << RegexError << A->getAsString(Args); 1234 return false; 1235 } 1236 1237 return true; 1238 }; 1239 1240 for (Arg *A : Args) { 1241 if (A->getOption().matches(OPT_R_Joined)) { 1242 StringRef Value = A->getValue(); 1243 1244 if (Value == Name) 1245 Result.Kind = CodeGenOptions::RK_Enabled; 1246 else if (Value == "everything") 1247 Result.Kind = CodeGenOptions::RK_EnabledEverything; 1248 else if (Value.split('-') == std::make_pair(StringRef("no"), Name)) 1249 Result.Kind = CodeGenOptions::RK_Disabled; 1250 else if (Value == "no-everything") 1251 Result.Kind = CodeGenOptions::RK_DisabledEverything; 1252 else 1253 continue; 1254 1255 if (Result.Kind == CodeGenOptions::RK_Disabled || 1256 Result.Kind == CodeGenOptions::RK_DisabledEverything) { 1257 Result.Pattern = ""; 1258 Result.Regex = nullptr; 1259 } else { 1260 InitializeResultPattern(A, ".*"); 1261 } 1262 } else if (A->getOption().matches(OptEQ)) { 1263 Result.Kind = CodeGenOptions::RK_WithPattern; 1264 if (!InitializeResultPattern(A, A->getValue())) 1265 return CodeGenOptions::OptRemark(); 1266 } 1267 } 1268 1269 return Result; 1270 } 1271 1272 static bool parseDiagnosticLevelMask(StringRef FlagName, 1273 const std::vector<std::string> &Levels, 1274 DiagnosticsEngine &Diags, 1275 DiagnosticLevelMask &M) { 1276 bool Success = true; 1277 for (const auto &Level : Levels) { 1278 DiagnosticLevelMask const PM = 1279 llvm::StringSwitch<DiagnosticLevelMask>(Level) 1280 .Case("note", DiagnosticLevelMask::Note) 1281 .Case("remark", DiagnosticLevelMask::Remark) 1282 .Case("warning", DiagnosticLevelMask::Warning) 1283 .Case("error", DiagnosticLevelMask::Error) 1284 .Default(DiagnosticLevelMask::None); 1285 if (PM == DiagnosticLevelMask::None) { 1286 Success = false; 1287 Diags.Report(diag::err_drv_invalid_value) << FlagName << Level; 1288 } 1289 M = M | PM; 1290 } 1291 return Success; 1292 } 1293 1294 static void parseSanitizerKinds(StringRef FlagName, 1295 const std::vector<std::string> &Sanitizers, 1296 DiagnosticsEngine &Diags, SanitizerSet &S) { 1297 for (const auto &Sanitizer : Sanitizers) { 1298 SanitizerMask K = parseSanitizerValue(Sanitizer, /*AllowGroups=*/false); 1299 if (K == SanitizerMask()) 1300 Diags.Report(diag::err_drv_invalid_value) << FlagName << Sanitizer; 1301 else 1302 S.set(K, true); 1303 } 1304 } 1305 1306 static SmallVector<StringRef, 4> serializeSanitizerKinds(SanitizerSet S) { 1307 SmallVector<StringRef, 4> Values; 1308 serializeSanitizerSet(S, Values); 1309 return Values; 1310 } 1311 1312 static void parseXRayInstrumentationBundle(StringRef FlagName, StringRef Bundle, 1313 ArgList &Args, DiagnosticsEngine &D, 1314 XRayInstrSet &S) { 1315 llvm::SmallVector<StringRef, 2> BundleParts; 1316 llvm::SplitString(Bundle, BundleParts, ","); 1317 for (const auto &B : BundleParts) { 1318 auto Mask = parseXRayInstrValue(B); 1319 if (Mask == XRayInstrKind::None) 1320 if (B != "none") 1321 D.Report(diag::err_drv_invalid_value) << FlagName << Bundle; 1322 else 1323 S.Mask = Mask; 1324 else if (Mask == XRayInstrKind::All) 1325 S.Mask = Mask; 1326 else 1327 S.set(Mask, true); 1328 } 1329 } 1330 1331 static std::string serializeXRayInstrumentationBundle(const XRayInstrSet &S) { 1332 llvm::SmallVector<StringRef, 2> BundleParts; 1333 serializeXRayInstrValue(S, BundleParts); 1334 std::string Buffer; 1335 llvm::raw_string_ostream OS(Buffer); 1336 llvm::interleave(BundleParts, OS, [&OS](StringRef Part) { OS << Part; }, ","); 1337 return Buffer; 1338 } 1339 1340 // Set the profile kind using fprofile-instrument-use-path. 1341 static void setPGOUseInstrumentor(CodeGenOptions &Opts, 1342 const Twine &ProfileName, 1343 llvm::vfs::FileSystem &FS, 1344 DiagnosticsEngine &Diags) { 1345 auto ReaderOrErr = llvm::IndexedInstrProfReader::create(ProfileName, FS); 1346 if (auto E = ReaderOrErr.takeError()) { 1347 unsigned DiagID = Diags.getCustomDiagID(DiagnosticsEngine::Error, 1348 "Error in reading profile %0: %1"); 1349 llvm::handleAllErrors(std::move(E), [&](const llvm::ErrorInfoBase &EI) { 1350 Diags.Report(DiagID) << ProfileName.str() << EI.message(); 1351 }); 1352 return; 1353 } 1354 std::unique_ptr<llvm::IndexedInstrProfReader> PGOReader = 1355 std::move(ReaderOrErr.get()); 1356 // Currently memprof profiles are only added at the IR level. Mark the profile 1357 // type as IR in that case as well and the subsequent matching needs to detect 1358 // which is available (might be one or both). 1359 if (PGOReader->isIRLevelProfile() || PGOReader->hasMemoryProfile()) { 1360 if (PGOReader->hasCSIRLevelProfile()) 1361 Opts.setProfileUse(CodeGenOptions::ProfileCSIRInstr); 1362 else 1363 Opts.setProfileUse(CodeGenOptions::ProfileIRInstr); 1364 } else 1365 Opts.setProfileUse(CodeGenOptions::ProfileClangInstr); 1366 } 1367 1368 void CompilerInvocation::GenerateCodeGenArgs( 1369 const CodeGenOptions &Opts, SmallVectorImpl<const char *> &Args, 1370 StringAllocator SA, const llvm::Triple &T, const std::string &OutputFile, 1371 const LangOptions *LangOpts) { 1372 const CodeGenOptions &CodeGenOpts = Opts; 1373 1374 if (Opts.OptimizationLevel == 0) 1375 GenerateArg(Args, OPT_O0, SA); 1376 else 1377 GenerateArg(Args, OPT_O, Twine(Opts.OptimizationLevel), SA); 1378 1379 #define CODEGEN_OPTION_WITH_MARSHALLING(...) \ 1380 GENERATE_OPTION_WITH_MARSHALLING(Args, SA, __VA_ARGS__) 1381 #include "clang/Driver/Options.inc" 1382 #undef CODEGEN_OPTION_WITH_MARSHALLING 1383 1384 if (Opts.OptimizationLevel > 0) { 1385 if (Opts.Inlining == CodeGenOptions::NormalInlining) 1386 GenerateArg(Args, OPT_finline_functions, SA); 1387 else if (Opts.Inlining == CodeGenOptions::OnlyHintInlining) 1388 GenerateArg(Args, OPT_finline_hint_functions, SA); 1389 else if (Opts.Inlining == CodeGenOptions::OnlyAlwaysInlining) 1390 GenerateArg(Args, OPT_fno_inline, SA); 1391 } 1392 1393 if (Opts.DirectAccessExternalData && LangOpts->PICLevel != 0) 1394 GenerateArg(Args, OPT_fdirect_access_external_data, SA); 1395 else if (!Opts.DirectAccessExternalData && LangOpts->PICLevel == 0) 1396 GenerateArg(Args, OPT_fno_direct_access_external_data, SA); 1397 1398 std::optional<StringRef> DebugInfoVal; 1399 switch (Opts.DebugInfo) { 1400 case llvm::codegenoptions::DebugLineTablesOnly: 1401 DebugInfoVal = "line-tables-only"; 1402 break; 1403 case llvm::codegenoptions::DebugDirectivesOnly: 1404 DebugInfoVal = "line-directives-only"; 1405 break; 1406 case llvm::codegenoptions::DebugInfoConstructor: 1407 DebugInfoVal = "constructor"; 1408 break; 1409 case llvm::codegenoptions::LimitedDebugInfo: 1410 DebugInfoVal = "limited"; 1411 break; 1412 case llvm::codegenoptions::FullDebugInfo: 1413 DebugInfoVal = "standalone"; 1414 break; 1415 case llvm::codegenoptions::UnusedTypeInfo: 1416 DebugInfoVal = "unused-types"; 1417 break; 1418 case llvm::codegenoptions::NoDebugInfo: // default value 1419 DebugInfoVal = std::nullopt; 1420 break; 1421 case llvm::codegenoptions::LocTrackingOnly: // implied value 1422 DebugInfoVal = std::nullopt; 1423 break; 1424 } 1425 if (DebugInfoVal) 1426 GenerateArg(Args, OPT_debug_info_kind_EQ, *DebugInfoVal, SA); 1427 1428 for (const auto &Prefix : Opts.DebugPrefixMap) 1429 GenerateArg(Args, OPT_fdebug_prefix_map_EQ, 1430 Prefix.first + "=" + Prefix.second, SA); 1431 1432 for (const auto &Prefix : Opts.CoveragePrefixMap) 1433 GenerateArg(Args, OPT_fcoverage_prefix_map_EQ, 1434 Prefix.first + "=" + Prefix.second, SA); 1435 1436 if (Opts.NewStructPathTBAA) 1437 GenerateArg(Args, OPT_new_struct_path_tbaa, SA); 1438 1439 if (Opts.OptimizeSize == 1) 1440 GenerateArg(Args, OPT_O, "s", SA); 1441 else if (Opts.OptimizeSize == 2) 1442 GenerateArg(Args, OPT_O, "z", SA); 1443 1444 // SimplifyLibCalls is set only in the absence of -fno-builtin and 1445 // -ffreestanding. We'll consider that when generating them. 1446 1447 // NoBuiltinFuncs are generated by LangOptions. 1448 1449 if (Opts.UnrollLoops && Opts.OptimizationLevel <= 1) 1450 GenerateArg(Args, OPT_funroll_loops, SA); 1451 else if (!Opts.UnrollLoops && Opts.OptimizationLevel > 1) 1452 GenerateArg(Args, OPT_fno_unroll_loops, SA); 1453 1454 if (!Opts.BinutilsVersion.empty()) 1455 GenerateArg(Args, OPT_fbinutils_version_EQ, Opts.BinutilsVersion, SA); 1456 1457 if (Opts.DebugNameTable == 1458 static_cast<unsigned>(llvm::DICompileUnit::DebugNameTableKind::GNU)) 1459 GenerateArg(Args, OPT_ggnu_pubnames, SA); 1460 else if (Opts.DebugNameTable == 1461 static_cast<unsigned>( 1462 llvm::DICompileUnit::DebugNameTableKind::Default)) 1463 GenerateArg(Args, OPT_gpubnames, SA); 1464 1465 auto TNK = Opts.getDebugSimpleTemplateNames(); 1466 if (TNK != llvm::codegenoptions::DebugTemplateNamesKind::Full) { 1467 if (TNK == llvm::codegenoptions::DebugTemplateNamesKind::Simple) 1468 GenerateArg(Args, OPT_gsimple_template_names_EQ, "simple", SA); 1469 else if (TNK == llvm::codegenoptions::DebugTemplateNamesKind::Mangled) 1470 GenerateArg(Args, OPT_gsimple_template_names_EQ, "mangled", SA); 1471 } 1472 // ProfileInstrumentUsePath is marshalled automatically, no need to generate 1473 // it or PGOUseInstrumentor. 1474 1475 if (Opts.TimePasses) { 1476 if (Opts.TimePassesPerRun) 1477 GenerateArg(Args, OPT_ftime_report_EQ, "per-pass-run", SA); 1478 else 1479 GenerateArg(Args, OPT_ftime_report, SA); 1480 } 1481 1482 if (Opts.PrepareForLTO && !Opts.PrepareForThinLTO) 1483 GenerateArg(Args, OPT_flto_EQ, "full", SA); 1484 1485 if (Opts.PrepareForThinLTO) 1486 GenerateArg(Args, OPT_flto_EQ, "thin", SA); 1487 1488 if (!Opts.ThinLTOIndexFile.empty()) 1489 GenerateArg(Args, OPT_fthinlto_index_EQ, Opts.ThinLTOIndexFile, SA); 1490 1491 if (Opts.SaveTempsFilePrefix == OutputFile) 1492 GenerateArg(Args, OPT_save_temps_EQ, "obj", SA); 1493 1494 StringRef MemProfileBasename("memprof.profraw"); 1495 if (!Opts.MemoryProfileOutput.empty()) { 1496 if (Opts.MemoryProfileOutput == MemProfileBasename) { 1497 GenerateArg(Args, OPT_fmemory_profile, SA); 1498 } else { 1499 size_t ArgLength = 1500 Opts.MemoryProfileOutput.size() - MemProfileBasename.size(); 1501 GenerateArg(Args, OPT_fmemory_profile_EQ, 1502 Opts.MemoryProfileOutput.substr(0, ArgLength), SA); 1503 } 1504 } 1505 1506 if (memcmp(Opts.CoverageVersion, "408*", 4) != 0) 1507 GenerateArg(Args, OPT_coverage_version_EQ, 1508 StringRef(Opts.CoverageVersion, 4), SA); 1509 1510 // TODO: Check if we need to generate arguments stored in CmdArgs. (Namely 1511 // '-fembed_bitcode', which does not map to any CompilerInvocation field and 1512 // won't be generated.) 1513 1514 if (Opts.XRayInstrumentationBundle.Mask != XRayInstrKind::All) { 1515 std::string InstrBundle = 1516 serializeXRayInstrumentationBundle(Opts.XRayInstrumentationBundle); 1517 if (!InstrBundle.empty()) 1518 GenerateArg(Args, OPT_fxray_instrumentation_bundle, InstrBundle, SA); 1519 } 1520 1521 if (Opts.CFProtectionReturn && Opts.CFProtectionBranch) 1522 GenerateArg(Args, OPT_fcf_protection_EQ, "full", SA); 1523 else if (Opts.CFProtectionReturn) 1524 GenerateArg(Args, OPT_fcf_protection_EQ, "return", SA); 1525 else if (Opts.CFProtectionBranch) 1526 GenerateArg(Args, OPT_fcf_protection_EQ, "branch", SA); 1527 1528 if (Opts.FunctionReturnThunks) 1529 GenerateArg(Args, OPT_mfunction_return_EQ, "thunk-extern", SA); 1530 1531 for (const auto &F : Opts.LinkBitcodeFiles) { 1532 bool Builtint = F.LinkFlags == llvm::Linker::Flags::LinkOnlyNeeded && 1533 F.PropagateAttrs && F.Internalize; 1534 GenerateArg(Args, 1535 Builtint ? OPT_mlink_builtin_bitcode : OPT_mlink_bitcode_file, 1536 F.Filename, SA); 1537 } 1538 1539 if (Opts.EmulatedTLS) 1540 GenerateArg(Args, OPT_femulated_tls, SA); 1541 1542 if (Opts.FPDenormalMode != llvm::DenormalMode::getIEEE()) 1543 GenerateArg(Args, OPT_fdenormal_fp_math_EQ, Opts.FPDenormalMode.str(), SA); 1544 1545 if ((Opts.FPDenormalMode != Opts.FP32DenormalMode) || 1546 (Opts.FP32DenormalMode != llvm::DenormalMode::getIEEE())) 1547 GenerateArg(Args, OPT_fdenormal_fp_math_f32_EQ, Opts.FP32DenormalMode.str(), 1548 SA); 1549 1550 if (Opts.StructReturnConvention == CodeGenOptions::SRCK_OnStack) { 1551 OptSpecifier Opt = 1552 T.isPPC32() ? OPT_maix_struct_return : OPT_fpcc_struct_return; 1553 GenerateArg(Args, Opt, SA); 1554 } else if (Opts.StructReturnConvention == CodeGenOptions::SRCK_InRegs) { 1555 OptSpecifier Opt = 1556 T.isPPC32() ? OPT_msvr4_struct_return : OPT_freg_struct_return; 1557 GenerateArg(Args, Opt, SA); 1558 } 1559 1560 if (Opts.EnableAIXExtendedAltivecABI) 1561 GenerateArg(Args, OPT_mabi_EQ_vec_extabi, SA); 1562 1563 if (Opts.XCOFFReadOnlyPointers) 1564 GenerateArg(Args, OPT_mxcoff_roptr, SA); 1565 1566 if (!Opts.OptRecordPasses.empty()) 1567 GenerateArg(Args, OPT_opt_record_passes, Opts.OptRecordPasses, SA); 1568 1569 if (!Opts.OptRecordFormat.empty()) 1570 GenerateArg(Args, OPT_opt_record_format, Opts.OptRecordFormat, SA); 1571 1572 GenerateOptimizationRemark(Args, SA, OPT_Rpass_EQ, "pass", 1573 Opts.OptimizationRemark); 1574 1575 GenerateOptimizationRemark(Args, SA, OPT_Rpass_missed_EQ, "pass-missed", 1576 Opts.OptimizationRemarkMissed); 1577 1578 GenerateOptimizationRemark(Args, SA, OPT_Rpass_analysis_EQ, "pass-analysis", 1579 Opts.OptimizationRemarkAnalysis); 1580 1581 GenerateArg(Args, OPT_fdiagnostics_hotness_threshold_EQ, 1582 Opts.DiagnosticsHotnessThreshold 1583 ? Twine(*Opts.DiagnosticsHotnessThreshold) 1584 : "auto", 1585 SA); 1586 1587 GenerateArg(Args, OPT_fdiagnostics_misexpect_tolerance_EQ, 1588 Twine(*Opts.DiagnosticsMisExpectTolerance), SA); 1589 1590 for (StringRef Sanitizer : serializeSanitizerKinds(Opts.SanitizeRecover)) 1591 GenerateArg(Args, OPT_fsanitize_recover_EQ, Sanitizer, SA); 1592 1593 for (StringRef Sanitizer : serializeSanitizerKinds(Opts.SanitizeTrap)) 1594 GenerateArg(Args, OPT_fsanitize_trap_EQ, Sanitizer, SA); 1595 1596 if (!Opts.EmitVersionIdentMetadata) 1597 GenerateArg(Args, OPT_Qn, SA); 1598 1599 switch (Opts.FiniteLoops) { 1600 case CodeGenOptions::FiniteLoopsKind::Language: 1601 break; 1602 case CodeGenOptions::FiniteLoopsKind::Always: 1603 GenerateArg(Args, OPT_ffinite_loops, SA); 1604 break; 1605 case CodeGenOptions::FiniteLoopsKind::Never: 1606 GenerateArg(Args, OPT_fno_finite_loops, SA); 1607 break; 1608 } 1609 } 1610 1611 bool CompilerInvocation::ParseCodeGenArgs(CodeGenOptions &Opts, ArgList &Args, 1612 InputKind IK, 1613 DiagnosticsEngine &Diags, 1614 const llvm::Triple &T, 1615 const std::string &OutputFile, 1616 const LangOptions &LangOptsRef) { 1617 unsigned NumErrorsBefore = Diags.getNumErrors(); 1618 1619 unsigned OptimizationLevel = getOptimizationLevel(Args, IK, Diags); 1620 // TODO: This could be done in Driver 1621 unsigned MaxOptLevel = 3; 1622 if (OptimizationLevel > MaxOptLevel) { 1623 // If the optimization level is not supported, fall back on the default 1624 // optimization 1625 Diags.Report(diag::warn_drv_optimization_value) 1626 << Args.getLastArg(OPT_O)->getAsString(Args) << "-O" << MaxOptLevel; 1627 OptimizationLevel = MaxOptLevel; 1628 } 1629 Opts.OptimizationLevel = OptimizationLevel; 1630 1631 // The key paths of codegen options defined in Options.td start with 1632 // "CodeGenOpts.". Let's provide the expected variable name and type. 1633 CodeGenOptions &CodeGenOpts = Opts; 1634 // Some codegen options depend on language options. Let's provide the expected 1635 // variable name and type. 1636 const LangOptions *LangOpts = &LangOptsRef; 1637 1638 #define CODEGEN_OPTION_WITH_MARSHALLING(...) \ 1639 PARSE_OPTION_WITH_MARSHALLING(Args, Diags, __VA_ARGS__) 1640 #include "clang/Driver/Options.inc" 1641 #undef CODEGEN_OPTION_WITH_MARSHALLING 1642 1643 // At O0 we want to fully disable inlining outside of cases marked with 1644 // 'alwaysinline' that are required for correctness. 1645 if (Opts.OptimizationLevel == 0) { 1646 Opts.setInlining(CodeGenOptions::OnlyAlwaysInlining); 1647 } else if (const Arg *A = Args.getLastArg(options::OPT_finline_functions, 1648 options::OPT_finline_hint_functions, 1649 options::OPT_fno_inline_functions, 1650 options::OPT_fno_inline)) { 1651 // Explicit inlining flags can disable some or all inlining even at 1652 // optimization levels above zero. 1653 if (A->getOption().matches(options::OPT_finline_functions)) 1654 Opts.setInlining(CodeGenOptions::NormalInlining); 1655 else if (A->getOption().matches(options::OPT_finline_hint_functions)) 1656 Opts.setInlining(CodeGenOptions::OnlyHintInlining); 1657 else 1658 Opts.setInlining(CodeGenOptions::OnlyAlwaysInlining); 1659 } else { 1660 Opts.setInlining(CodeGenOptions::NormalInlining); 1661 } 1662 1663 // PIC defaults to -fno-direct-access-external-data while non-PIC defaults to 1664 // -fdirect-access-external-data. 1665 Opts.DirectAccessExternalData = 1666 Args.hasArg(OPT_fdirect_access_external_data) || 1667 (!Args.hasArg(OPT_fno_direct_access_external_data) && 1668 LangOpts->PICLevel == 0); 1669 1670 if (Arg *A = Args.getLastArg(OPT_debug_info_kind_EQ)) { 1671 unsigned Val = 1672 llvm::StringSwitch<unsigned>(A->getValue()) 1673 .Case("line-tables-only", llvm::codegenoptions::DebugLineTablesOnly) 1674 .Case("line-directives-only", 1675 llvm::codegenoptions::DebugDirectivesOnly) 1676 .Case("constructor", llvm::codegenoptions::DebugInfoConstructor) 1677 .Case("limited", llvm::codegenoptions::LimitedDebugInfo) 1678 .Case("standalone", llvm::codegenoptions::FullDebugInfo) 1679 .Case("unused-types", llvm::codegenoptions::UnusedTypeInfo) 1680 .Default(~0U); 1681 if (Val == ~0U) 1682 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) 1683 << A->getValue(); 1684 else 1685 Opts.setDebugInfo(static_cast<llvm::codegenoptions::DebugInfoKind>(Val)); 1686 } 1687 1688 // If -fuse-ctor-homing is set and limited debug info is already on, then use 1689 // constructor homing, and vice versa for -fno-use-ctor-homing. 1690 if (const Arg *A = 1691 Args.getLastArg(OPT_fuse_ctor_homing, OPT_fno_use_ctor_homing)) { 1692 if (A->getOption().matches(OPT_fuse_ctor_homing) && 1693 Opts.getDebugInfo() == llvm::codegenoptions::LimitedDebugInfo) 1694 Opts.setDebugInfo(llvm::codegenoptions::DebugInfoConstructor); 1695 if (A->getOption().matches(OPT_fno_use_ctor_homing) && 1696 Opts.getDebugInfo() == llvm::codegenoptions::DebugInfoConstructor) 1697 Opts.setDebugInfo(llvm::codegenoptions::LimitedDebugInfo); 1698 } 1699 1700 for (const auto &Arg : Args.getAllArgValues(OPT_fdebug_prefix_map_EQ)) { 1701 auto Split = StringRef(Arg).split('='); 1702 Opts.DebugPrefixMap.emplace_back(Split.first, Split.second); 1703 } 1704 1705 for (const auto &Arg : Args.getAllArgValues(OPT_fcoverage_prefix_map_EQ)) { 1706 auto Split = StringRef(Arg).split('='); 1707 Opts.CoveragePrefixMap.emplace_back(Split.first, Split.second); 1708 } 1709 1710 const llvm::Triple::ArchType DebugEntryValueArchs[] = { 1711 llvm::Triple::x86, llvm::Triple::x86_64, llvm::Triple::aarch64, 1712 llvm::Triple::arm, llvm::Triple::armeb, llvm::Triple::mips, 1713 llvm::Triple::mipsel, llvm::Triple::mips64, llvm::Triple::mips64el}; 1714 1715 if (Opts.OptimizationLevel > 0 && Opts.hasReducedDebugInfo() && 1716 llvm::is_contained(DebugEntryValueArchs, T.getArch())) 1717 Opts.EmitCallSiteInfo = true; 1718 1719 if (!Opts.EnableDIPreservationVerify && Opts.DIBugsReportFilePath.size()) { 1720 Diags.Report(diag::warn_ignoring_verify_debuginfo_preserve_export) 1721 << Opts.DIBugsReportFilePath; 1722 Opts.DIBugsReportFilePath = ""; 1723 } 1724 1725 Opts.NewStructPathTBAA = !Args.hasArg(OPT_no_struct_path_tbaa) && 1726 Args.hasArg(OPT_new_struct_path_tbaa); 1727 Opts.OptimizeSize = getOptimizationLevelSize(Args); 1728 Opts.SimplifyLibCalls = !LangOpts->NoBuiltin; 1729 if (Opts.SimplifyLibCalls) 1730 Opts.NoBuiltinFuncs = LangOpts->NoBuiltinFuncs; 1731 Opts.UnrollLoops = 1732 Args.hasFlag(OPT_funroll_loops, OPT_fno_unroll_loops, 1733 (Opts.OptimizationLevel > 1)); 1734 Opts.BinutilsVersion = 1735 std::string(Args.getLastArgValue(OPT_fbinutils_version_EQ)); 1736 1737 Opts.DebugNameTable = static_cast<unsigned>( 1738 Args.hasArg(OPT_ggnu_pubnames) 1739 ? llvm::DICompileUnit::DebugNameTableKind::GNU 1740 : Args.hasArg(OPT_gpubnames) 1741 ? llvm::DICompileUnit::DebugNameTableKind::Default 1742 : llvm::DICompileUnit::DebugNameTableKind::None); 1743 if (const Arg *A = Args.getLastArg(OPT_gsimple_template_names_EQ)) { 1744 StringRef Value = A->getValue(); 1745 if (Value != "simple" && Value != "mangled") 1746 Diags.Report(diag::err_drv_unsupported_option_argument) 1747 << A->getSpelling() << A->getValue(); 1748 Opts.setDebugSimpleTemplateNames( 1749 StringRef(A->getValue()) == "simple" 1750 ? llvm::codegenoptions::DebugTemplateNamesKind::Simple 1751 : llvm::codegenoptions::DebugTemplateNamesKind::Mangled); 1752 } 1753 1754 if (const Arg *A = Args.getLastArg(OPT_ftime_report, OPT_ftime_report_EQ)) { 1755 Opts.TimePasses = true; 1756 1757 // -ftime-report= is only for new pass manager. 1758 if (A->getOption().getID() == OPT_ftime_report_EQ) { 1759 StringRef Val = A->getValue(); 1760 if (Val == "per-pass") 1761 Opts.TimePassesPerRun = false; 1762 else if (Val == "per-pass-run") 1763 Opts.TimePassesPerRun = true; 1764 else 1765 Diags.Report(diag::err_drv_invalid_value) 1766 << A->getAsString(Args) << A->getValue(); 1767 } 1768 } 1769 1770 Opts.PrepareForLTO = false; 1771 Opts.PrepareForThinLTO = false; 1772 if (Arg *A = Args.getLastArg(OPT_flto_EQ)) { 1773 Opts.PrepareForLTO = true; 1774 StringRef S = A->getValue(); 1775 if (S == "thin") 1776 Opts.PrepareForThinLTO = true; 1777 else if (S != "full") 1778 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << S; 1779 } 1780 if (Arg *A = Args.getLastArg(OPT_fthinlto_index_EQ)) { 1781 if (IK.getLanguage() != Language::LLVM_IR) 1782 Diags.Report(diag::err_drv_argument_only_allowed_with) 1783 << A->getAsString(Args) << "-x ir"; 1784 Opts.ThinLTOIndexFile = 1785 std::string(Args.getLastArgValue(OPT_fthinlto_index_EQ)); 1786 } 1787 if (Arg *A = Args.getLastArg(OPT_save_temps_EQ)) 1788 Opts.SaveTempsFilePrefix = 1789 llvm::StringSwitch<std::string>(A->getValue()) 1790 .Case("obj", OutputFile) 1791 .Default(llvm::sys::path::filename(OutputFile).str()); 1792 1793 // The memory profile runtime appends the pid to make this name more unique. 1794 const char *MemProfileBasename = "memprof.profraw"; 1795 if (Args.hasArg(OPT_fmemory_profile_EQ)) { 1796 SmallString<128> Path( 1797 std::string(Args.getLastArgValue(OPT_fmemory_profile_EQ))); 1798 llvm::sys::path::append(Path, MemProfileBasename); 1799 Opts.MemoryProfileOutput = std::string(Path); 1800 } else if (Args.hasArg(OPT_fmemory_profile)) 1801 Opts.MemoryProfileOutput = MemProfileBasename; 1802 1803 memcpy(Opts.CoverageVersion, "408*", 4); 1804 if (Opts.CoverageNotesFile.size() || Opts.CoverageDataFile.size()) { 1805 if (Args.hasArg(OPT_coverage_version_EQ)) { 1806 StringRef CoverageVersion = Args.getLastArgValue(OPT_coverage_version_EQ); 1807 if (CoverageVersion.size() != 4) { 1808 Diags.Report(diag::err_drv_invalid_value) 1809 << Args.getLastArg(OPT_coverage_version_EQ)->getAsString(Args) 1810 << CoverageVersion; 1811 } else { 1812 memcpy(Opts.CoverageVersion, CoverageVersion.data(), 4); 1813 } 1814 } 1815 } 1816 // FIXME: For backend options that are not yet recorded as function 1817 // attributes in the IR, keep track of them so we can embed them in a 1818 // separate data section and use them when building the bitcode. 1819 for (const auto &A : Args) { 1820 // Do not encode output and input. 1821 if (A->getOption().getID() == options::OPT_o || 1822 A->getOption().getID() == options::OPT_INPUT || 1823 A->getOption().getID() == options::OPT_x || 1824 A->getOption().getID() == options::OPT_fembed_bitcode || 1825 A->getOption().matches(options::OPT_W_Group)) 1826 continue; 1827 ArgStringList ASL; 1828 A->render(Args, ASL); 1829 for (const auto &arg : ASL) { 1830 StringRef ArgStr(arg); 1831 Opts.CmdArgs.insert(Opts.CmdArgs.end(), ArgStr.begin(), ArgStr.end()); 1832 // using \00 to separate each commandline options. 1833 Opts.CmdArgs.push_back('\0'); 1834 } 1835 } 1836 1837 auto XRayInstrBundles = 1838 Args.getAllArgValues(OPT_fxray_instrumentation_bundle); 1839 if (XRayInstrBundles.empty()) 1840 Opts.XRayInstrumentationBundle.Mask = XRayInstrKind::All; 1841 else 1842 for (const auto &A : XRayInstrBundles) 1843 parseXRayInstrumentationBundle("-fxray-instrumentation-bundle=", A, Args, 1844 Diags, Opts.XRayInstrumentationBundle); 1845 1846 if (const Arg *A = Args.getLastArg(OPT_fcf_protection_EQ)) { 1847 StringRef Name = A->getValue(); 1848 if (Name == "full") { 1849 Opts.CFProtectionReturn = 1; 1850 Opts.CFProtectionBranch = 1; 1851 } else if (Name == "return") 1852 Opts.CFProtectionReturn = 1; 1853 else if (Name == "branch") 1854 Opts.CFProtectionBranch = 1; 1855 else if (Name != "none") 1856 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Name; 1857 } 1858 1859 if (const Arg *A = Args.getLastArg(OPT_mfunction_return_EQ)) { 1860 auto Val = llvm::StringSwitch<llvm::FunctionReturnThunksKind>(A->getValue()) 1861 .Case("keep", llvm::FunctionReturnThunksKind::Keep) 1862 .Case("thunk-extern", llvm::FunctionReturnThunksKind::Extern) 1863 .Default(llvm::FunctionReturnThunksKind::Invalid); 1864 // SystemZ might want to add support for "expolines." 1865 if (!T.isX86()) 1866 Diags.Report(diag::err_drv_argument_not_allowed_with) 1867 << A->getSpelling() << T.getTriple(); 1868 else if (Val == llvm::FunctionReturnThunksKind::Invalid) 1869 Diags.Report(diag::err_drv_invalid_value) 1870 << A->getAsString(Args) << A->getValue(); 1871 else if (Val == llvm::FunctionReturnThunksKind::Extern && 1872 Args.getLastArgValue(OPT_mcmodel_EQ).equals("large")) 1873 Diags.Report(diag::err_drv_argument_not_allowed_with) 1874 << A->getAsString(Args) 1875 << Args.getLastArg(OPT_mcmodel_EQ)->getAsString(Args); 1876 else 1877 Opts.FunctionReturnThunks = static_cast<unsigned>(Val); 1878 } 1879 1880 for (auto *A : 1881 Args.filtered(OPT_mlink_bitcode_file, OPT_mlink_builtin_bitcode)) { 1882 CodeGenOptions::BitcodeFileToLink F; 1883 F.Filename = A->getValue(); 1884 if (A->getOption().matches(OPT_mlink_builtin_bitcode)) { 1885 F.LinkFlags = llvm::Linker::Flags::LinkOnlyNeeded; 1886 // When linking CUDA bitcode, propagate function attributes so that 1887 // e.g. libdevice gets fast-math attrs if we're building with fast-math. 1888 F.PropagateAttrs = true; 1889 F.Internalize = true; 1890 } 1891 Opts.LinkBitcodeFiles.push_back(F); 1892 } 1893 1894 if (Arg *A = Args.getLastArg(OPT_ftlsmodel_EQ)) { 1895 if (T.isOSAIX()) { 1896 StringRef Name = A->getValue(); 1897 if (Name != "global-dynamic") 1898 Diags.Report(diag::err_aix_unsupported_tls_model) << Name; 1899 } 1900 } 1901 1902 if (Arg *A = Args.getLastArg(OPT_fdenormal_fp_math_EQ)) { 1903 StringRef Val = A->getValue(); 1904 Opts.FPDenormalMode = llvm::parseDenormalFPAttribute(Val); 1905 Opts.FP32DenormalMode = Opts.FPDenormalMode; 1906 if (!Opts.FPDenormalMode.isValid()) 1907 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Val; 1908 } 1909 1910 if (Arg *A = Args.getLastArg(OPT_fdenormal_fp_math_f32_EQ)) { 1911 StringRef Val = A->getValue(); 1912 Opts.FP32DenormalMode = llvm::parseDenormalFPAttribute(Val); 1913 if (!Opts.FP32DenormalMode.isValid()) 1914 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Val; 1915 } 1916 1917 // X86_32 has -fppc-struct-return and -freg-struct-return. 1918 // PPC32 has -maix-struct-return and -msvr4-struct-return. 1919 if (Arg *A = 1920 Args.getLastArg(OPT_fpcc_struct_return, OPT_freg_struct_return, 1921 OPT_maix_struct_return, OPT_msvr4_struct_return)) { 1922 // TODO: We might want to consider enabling these options on AIX in the 1923 // future. 1924 if (T.isOSAIX()) 1925 Diags.Report(diag::err_drv_unsupported_opt_for_target) 1926 << A->getSpelling() << T.str(); 1927 1928 const Option &O = A->getOption(); 1929 if (O.matches(OPT_fpcc_struct_return) || 1930 O.matches(OPT_maix_struct_return)) { 1931 Opts.setStructReturnConvention(CodeGenOptions::SRCK_OnStack); 1932 } else { 1933 assert(O.matches(OPT_freg_struct_return) || 1934 O.matches(OPT_msvr4_struct_return)); 1935 Opts.setStructReturnConvention(CodeGenOptions::SRCK_InRegs); 1936 } 1937 } 1938 1939 if (Arg *A = Args.getLastArg(OPT_mxcoff_roptr)) { 1940 if (!T.isOSAIX()) 1941 Diags.Report(diag::err_drv_unsupported_opt_for_target) 1942 << A->getSpelling() << T.str(); 1943 1944 // Since the storage mapping class is specified per csect, 1945 // without using data sections, it is less effective to use read-only 1946 // pointers. Using read-only pointers may cause other RO variables in the 1947 // same csect to become RW when the linker acts upon `-bforceimprw`; 1948 // therefore, we require that separate data sections 1949 // are used when `-mxcoff-roptr` is in effect. We respect the setting of 1950 // data-sections since we have not found reasons to do otherwise that 1951 // overcome the user surprise of not respecting the setting. 1952 if (!Args.hasFlag(OPT_fdata_sections, OPT_fno_data_sections, false)) 1953 Diags.Report(diag::err_roptr_requires_data_sections); 1954 1955 Opts.XCOFFReadOnlyPointers = true; 1956 } 1957 1958 if (Arg *A = Args.getLastArg(OPT_mabi_EQ_quadword_atomics)) { 1959 if (!T.isOSAIX() || T.isPPC32()) 1960 Diags.Report(diag::err_drv_unsupported_opt_for_target) 1961 << A->getSpelling() << T.str(); 1962 } 1963 1964 bool NeedLocTracking = false; 1965 1966 if (!Opts.OptRecordFile.empty()) 1967 NeedLocTracking = true; 1968 1969 if (Arg *A = Args.getLastArg(OPT_opt_record_passes)) { 1970 Opts.OptRecordPasses = A->getValue(); 1971 NeedLocTracking = true; 1972 } 1973 1974 if (Arg *A = Args.getLastArg(OPT_opt_record_format)) { 1975 Opts.OptRecordFormat = A->getValue(); 1976 NeedLocTracking = true; 1977 } 1978 1979 Opts.OptimizationRemark = 1980 ParseOptimizationRemark(Diags, Args, OPT_Rpass_EQ, "pass"); 1981 1982 Opts.OptimizationRemarkMissed = 1983 ParseOptimizationRemark(Diags, Args, OPT_Rpass_missed_EQ, "pass-missed"); 1984 1985 Opts.OptimizationRemarkAnalysis = ParseOptimizationRemark( 1986 Diags, Args, OPT_Rpass_analysis_EQ, "pass-analysis"); 1987 1988 NeedLocTracking |= Opts.OptimizationRemark.hasValidPattern() || 1989 Opts.OptimizationRemarkMissed.hasValidPattern() || 1990 Opts.OptimizationRemarkAnalysis.hasValidPattern(); 1991 1992 bool UsingSampleProfile = !Opts.SampleProfileFile.empty(); 1993 bool UsingProfile = 1994 UsingSampleProfile || !Opts.ProfileInstrumentUsePath.empty(); 1995 1996 if (Opts.DiagnosticsWithHotness && !UsingProfile && 1997 // An IR file will contain PGO as metadata 1998 IK.getLanguage() != Language::LLVM_IR) 1999 Diags.Report(diag::warn_drv_diagnostics_hotness_requires_pgo) 2000 << "-fdiagnostics-show-hotness"; 2001 2002 // Parse remarks hotness threshold. Valid value is either integer or 'auto'. 2003 if (auto *arg = 2004 Args.getLastArg(options::OPT_fdiagnostics_hotness_threshold_EQ)) { 2005 auto ResultOrErr = 2006 llvm::remarks::parseHotnessThresholdOption(arg->getValue()); 2007 2008 if (!ResultOrErr) { 2009 Diags.Report(diag::err_drv_invalid_diagnotics_hotness_threshold) 2010 << "-fdiagnostics-hotness-threshold="; 2011 } else { 2012 Opts.DiagnosticsHotnessThreshold = *ResultOrErr; 2013 if ((!Opts.DiagnosticsHotnessThreshold || 2014 *Opts.DiagnosticsHotnessThreshold > 0) && 2015 !UsingProfile) 2016 Diags.Report(diag::warn_drv_diagnostics_hotness_requires_pgo) 2017 << "-fdiagnostics-hotness-threshold="; 2018 } 2019 } 2020 2021 if (auto *arg = 2022 Args.getLastArg(options::OPT_fdiagnostics_misexpect_tolerance_EQ)) { 2023 auto ResultOrErr = parseToleranceOption(arg->getValue()); 2024 2025 if (!ResultOrErr) { 2026 Diags.Report(diag::err_drv_invalid_diagnotics_misexpect_tolerance) 2027 << "-fdiagnostics-misexpect-tolerance="; 2028 } else { 2029 Opts.DiagnosticsMisExpectTolerance = *ResultOrErr; 2030 if ((!Opts.DiagnosticsMisExpectTolerance || 2031 *Opts.DiagnosticsMisExpectTolerance > 0) && 2032 !UsingProfile) 2033 Diags.Report(diag::warn_drv_diagnostics_misexpect_requires_pgo) 2034 << "-fdiagnostics-misexpect-tolerance="; 2035 } 2036 } 2037 2038 // If the user requested to use a sample profile for PGO, then the 2039 // backend will need to track source location information so the profile 2040 // can be incorporated into the IR. 2041 if (UsingSampleProfile) 2042 NeedLocTracking = true; 2043 2044 if (!Opts.StackUsageOutput.empty()) 2045 NeedLocTracking = true; 2046 2047 // If the user requested a flag that requires source locations available in 2048 // the backend, make sure that the backend tracks source location information. 2049 if (NeedLocTracking && 2050 Opts.getDebugInfo() == llvm::codegenoptions::NoDebugInfo) 2051 Opts.setDebugInfo(llvm::codegenoptions::LocTrackingOnly); 2052 2053 // Parse -fsanitize-recover= arguments. 2054 // FIXME: Report unrecoverable sanitizers incorrectly specified here. 2055 parseSanitizerKinds("-fsanitize-recover=", 2056 Args.getAllArgValues(OPT_fsanitize_recover_EQ), Diags, 2057 Opts.SanitizeRecover); 2058 parseSanitizerKinds("-fsanitize-trap=", 2059 Args.getAllArgValues(OPT_fsanitize_trap_EQ), Diags, 2060 Opts.SanitizeTrap); 2061 2062 Opts.EmitVersionIdentMetadata = Args.hasFlag(OPT_Qy, OPT_Qn, true); 2063 2064 if (Args.hasArg(options::OPT_ffinite_loops)) 2065 Opts.FiniteLoops = CodeGenOptions::FiniteLoopsKind::Always; 2066 else if (Args.hasArg(options::OPT_fno_finite_loops)) 2067 Opts.FiniteLoops = CodeGenOptions::FiniteLoopsKind::Never; 2068 2069 Opts.EmitIEEENaNCompliantInsts = Args.hasFlag( 2070 options::OPT_mamdgpu_ieee, options::OPT_mno_amdgpu_ieee, true); 2071 if (!Opts.EmitIEEENaNCompliantInsts && !LangOptsRef.NoHonorNaNs) 2072 Diags.Report(diag::err_drv_amdgpu_ieee_without_no_honor_nans); 2073 2074 return Diags.getNumErrors() == NumErrorsBefore; 2075 } 2076 2077 static void 2078 GenerateDependencyOutputArgs(const DependencyOutputOptions &Opts, 2079 SmallVectorImpl<const char *> &Args, 2080 CompilerInvocation::StringAllocator SA) { 2081 const DependencyOutputOptions &DependencyOutputOpts = Opts; 2082 #define DEPENDENCY_OUTPUT_OPTION_WITH_MARSHALLING(...) \ 2083 GENERATE_OPTION_WITH_MARSHALLING(Args, SA, __VA_ARGS__) 2084 #include "clang/Driver/Options.inc" 2085 #undef DEPENDENCY_OUTPUT_OPTION_WITH_MARSHALLING 2086 2087 if (Opts.ShowIncludesDest != ShowIncludesDestination::None) 2088 GenerateArg(Args, OPT_show_includes, SA); 2089 2090 for (const auto &Dep : Opts.ExtraDeps) { 2091 switch (Dep.second) { 2092 case EDK_SanitizeIgnorelist: 2093 // Sanitizer ignorelist arguments are generated from LanguageOptions. 2094 continue; 2095 case EDK_ModuleFile: 2096 // Module file arguments are generated from FrontendOptions and 2097 // HeaderSearchOptions. 2098 continue; 2099 case EDK_ProfileList: 2100 // Profile list arguments are generated from LanguageOptions via the 2101 // marshalling infrastructure. 2102 continue; 2103 case EDK_DepFileEntry: 2104 GenerateArg(Args, OPT_fdepfile_entry, Dep.first, SA); 2105 break; 2106 } 2107 } 2108 } 2109 2110 static bool ParseDependencyOutputArgs(DependencyOutputOptions &Opts, 2111 ArgList &Args, DiagnosticsEngine &Diags, 2112 frontend::ActionKind Action, 2113 bool ShowLineMarkers) { 2114 unsigned NumErrorsBefore = Diags.getNumErrors(); 2115 2116 DependencyOutputOptions &DependencyOutputOpts = Opts; 2117 #define DEPENDENCY_OUTPUT_OPTION_WITH_MARSHALLING(...) \ 2118 PARSE_OPTION_WITH_MARSHALLING(Args, Diags, __VA_ARGS__) 2119 #include "clang/Driver/Options.inc" 2120 #undef DEPENDENCY_OUTPUT_OPTION_WITH_MARSHALLING 2121 2122 if (Args.hasArg(OPT_show_includes)) { 2123 // Writing both /showIncludes and preprocessor output to stdout 2124 // would produce interleaved output, so use stderr for /showIncludes. 2125 // This behaves the same as cl.exe, when /E, /EP or /P are passed. 2126 if (Action == frontend::PrintPreprocessedInput || !ShowLineMarkers) 2127 Opts.ShowIncludesDest = ShowIncludesDestination::Stderr; 2128 else 2129 Opts.ShowIncludesDest = ShowIncludesDestination::Stdout; 2130 } else { 2131 Opts.ShowIncludesDest = ShowIncludesDestination::None; 2132 } 2133 2134 // Add sanitizer ignorelists as extra dependencies. 2135 // They won't be discovered by the regular preprocessor, so 2136 // we let make / ninja to know about this implicit dependency. 2137 if (!Args.hasArg(OPT_fno_sanitize_ignorelist)) { 2138 for (const auto *A : Args.filtered(OPT_fsanitize_ignorelist_EQ)) { 2139 StringRef Val = A->getValue(); 2140 if (!Val.contains('=')) 2141 Opts.ExtraDeps.emplace_back(std::string(Val), EDK_SanitizeIgnorelist); 2142 } 2143 if (Opts.IncludeSystemHeaders) { 2144 for (const auto *A : Args.filtered(OPT_fsanitize_system_ignorelist_EQ)) { 2145 StringRef Val = A->getValue(); 2146 if (!Val.contains('=')) 2147 Opts.ExtraDeps.emplace_back(std::string(Val), EDK_SanitizeIgnorelist); 2148 } 2149 } 2150 } 2151 2152 // -fprofile-list= dependencies. 2153 for (const auto &Filename : Args.getAllArgValues(OPT_fprofile_list_EQ)) 2154 Opts.ExtraDeps.emplace_back(Filename, EDK_ProfileList); 2155 2156 // Propagate the extra dependencies. 2157 for (const auto *A : Args.filtered(OPT_fdepfile_entry)) 2158 Opts.ExtraDeps.emplace_back(A->getValue(), EDK_DepFileEntry); 2159 2160 // Only the -fmodule-file=<file> form. 2161 for (const auto *A : Args.filtered(OPT_fmodule_file)) { 2162 StringRef Val = A->getValue(); 2163 if (!Val.contains('=')) 2164 Opts.ExtraDeps.emplace_back(std::string(Val), EDK_ModuleFile); 2165 } 2166 2167 // Check for invalid combinations of header-include-format 2168 // and header-include-filtering. 2169 if ((Opts.HeaderIncludeFormat == HIFMT_Textual && 2170 Opts.HeaderIncludeFiltering != HIFIL_None) || 2171 (Opts.HeaderIncludeFormat == HIFMT_JSON && 2172 Opts.HeaderIncludeFiltering != HIFIL_Only_Direct_System)) 2173 Diags.Report(diag::err_drv_print_header_env_var_combination_cc1) 2174 << Args.getLastArg(OPT_header_include_format_EQ)->getValue() 2175 << Args.getLastArg(OPT_header_include_filtering_EQ)->getValue(); 2176 2177 return Diags.getNumErrors() == NumErrorsBefore; 2178 } 2179 2180 static bool parseShowColorsArgs(const ArgList &Args, bool DefaultColor) { 2181 // Color diagnostics default to auto ("on" if terminal supports) in the driver 2182 // but default to off in cc1, needing an explicit OPT_fdiagnostics_color. 2183 // Support both clang's -f[no-]color-diagnostics and gcc's 2184 // -f[no-]diagnostics-colors[=never|always|auto]. 2185 enum { 2186 Colors_On, 2187 Colors_Off, 2188 Colors_Auto 2189 } ShowColors = DefaultColor ? Colors_Auto : Colors_Off; 2190 for (auto *A : Args) { 2191 const Option &O = A->getOption(); 2192 if (O.matches(options::OPT_fcolor_diagnostics)) { 2193 ShowColors = Colors_On; 2194 } else if (O.matches(options::OPT_fno_color_diagnostics)) { 2195 ShowColors = Colors_Off; 2196 } else if (O.matches(options::OPT_fdiagnostics_color_EQ)) { 2197 StringRef Value(A->getValue()); 2198 if (Value == "always") 2199 ShowColors = Colors_On; 2200 else if (Value == "never") 2201 ShowColors = Colors_Off; 2202 else if (Value == "auto") 2203 ShowColors = Colors_Auto; 2204 } 2205 } 2206 return ShowColors == Colors_On || 2207 (ShowColors == Colors_Auto && 2208 llvm::sys::Process::StandardErrHasColors()); 2209 } 2210 2211 static bool checkVerifyPrefixes(const std::vector<std::string> &VerifyPrefixes, 2212 DiagnosticsEngine &Diags) { 2213 bool Success = true; 2214 for (const auto &Prefix : VerifyPrefixes) { 2215 // Every prefix must start with a letter and contain only alphanumeric 2216 // characters, hyphens, and underscores. 2217 auto BadChar = llvm::find_if(Prefix, [](char C) { 2218 return !isAlphanumeric(C) && C != '-' && C != '_'; 2219 }); 2220 if (BadChar != Prefix.end() || !isLetter(Prefix[0])) { 2221 Success = false; 2222 Diags.Report(diag::err_drv_invalid_value) << "-verify=" << Prefix; 2223 Diags.Report(diag::note_drv_verify_prefix_spelling); 2224 } 2225 } 2226 return Success; 2227 } 2228 2229 static void GenerateFileSystemArgs(const FileSystemOptions &Opts, 2230 SmallVectorImpl<const char *> &Args, 2231 CompilerInvocation::StringAllocator SA) { 2232 const FileSystemOptions &FileSystemOpts = Opts; 2233 2234 #define FILE_SYSTEM_OPTION_WITH_MARSHALLING(...) \ 2235 GENERATE_OPTION_WITH_MARSHALLING(Args, SA, __VA_ARGS__) 2236 #include "clang/Driver/Options.inc" 2237 #undef FILE_SYSTEM_OPTION_WITH_MARSHALLING 2238 } 2239 2240 static bool ParseFileSystemArgs(FileSystemOptions &Opts, const ArgList &Args, 2241 DiagnosticsEngine &Diags) { 2242 unsigned NumErrorsBefore = Diags.getNumErrors(); 2243 2244 FileSystemOptions &FileSystemOpts = Opts; 2245 2246 #define FILE_SYSTEM_OPTION_WITH_MARSHALLING(...) \ 2247 PARSE_OPTION_WITH_MARSHALLING(Args, Diags, __VA_ARGS__) 2248 #include "clang/Driver/Options.inc" 2249 #undef FILE_SYSTEM_OPTION_WITH_MARSHALLING 2250 2251 return Diags.getNumErrors() == NumErrorsBefore; 2252 } 2253 2254 static void GenerateMigratorArgs(const MigratorOptions &Opts, 2255 SmallVectorImpl<const char *> &Args, 2256 CompilerInvocation::StringAllocator SA) { 2257 const MigratorOptions &MigratorOpts = Opts; 2258 #define MIGRATOR_OPTION_WITH_MARSHALLING(...) \ 2259 GENERATE_OPTION_WITH_MARSHALLING(Args, SA, __VA_ARGS__) 2260 #include "clang/Driver/Options.inc" 2261 #undef MIGRATOR_OPTION_WITH_MARSHALLING 2262 } 2263 2264 static bool ParseMigratorArgs(MigratorOptions &Opts, const ArgList &Args, 2265 DiagnosticsEngine &Diags) { 2266 unsigned NumErrorsBefore = Diags.getNumErrors(); 2267 2268 MigratorOptions &MigratorOpts = Opts; 2269 2270 #define MIGRATOR_OPTION_WITH_MARSHALLING(...) \ 2271 PARSE_OPTION_WITH_MARSHALLING(Args, Diags, __VA_ARGS__) 2272 #include "clang/Driver/Options.inc" 2273 #undef MIGRATOR_OPTION_WITH_MARSHALLING 2274 2275 return Diags.getNumErrors() == NumErrorsBefore; 2276 } 2277 2278 void CompilerInvocation::GenerateDiagnosticArgs( 2279 const DiagnosticOptions &Opts, SmallVectorImpl<const char *> &Args, 2280 StringAllocator SA, bool DefaultDiagColor) { 2281 const DiagnosticOptions *DiagnosticOpts = &Opts; 2282 #define DIAG_OPTION_WITH_MARSHALLING(...) \ 2283 GENERATE_OPTION_WITH_MARSHALLING(Args, SA, __VA_ARGS__) 2284 #include "clang/Driver/Options.inc" 2285 #undef DIAG_OPTION_WITH_MARSHALLING 2286 2287 if (!Opts.DiagnosticSerializationFile.empty()) 2288 GenerateArg(Args, OPT_diagnostic_serialized_file, 2289 Opts.DiagnosticSerializationFile, SA); 2290 2291 if (Opts.ShowColors) 2292 GenerateArg(Args, OPT_fcolor_diagnostics, SA); 2293 2294 if (Opts.VerifyDiagnostics && 2295 llvm::is_contained(Opts.VerifyPrefixes, "expected")) 2296 GenerateArg(Args, OPT_verify, SA); 2297 2298 for (const auto &Prefix : Opts.VerifyPrefixes) 2299 if (Prefix != "expected") 2300 GenerateArg(Args, OPT_verify_EQ, Prefix, SA); 2301 2302 DiagnosticLevelMask VIU = Opts.getVerifyIgnoreUnexpected(); 2303 if (VIU == DiagnosticLevelMask::None) { 2304 // This is the default, don't generate anything. 2305 } else if (VIU == DiagnosticLevelMask::All) { 2306 GenerateArg(Args, OPT_verify_ignore_unexpected, SA); 2307 } else { 2308 if (static_cast<unsigned>(VIU & DiagnosticLevelMask::Note) != 0) 2309 GenerateArg(Args, OPT_verify_ignore_unexpected_EQ, "note", SA); 2310 if (static_cast<unsigned>(VIU & DiagnosticLevelMask::Remark) != 0) 2311 GenerateArg(Args, OPT_verify_ignore_unexpected_EQ, "remark", SA); 2312 if (static_cast<unsigned>(VIU & DiagnosticLevelMask::Warning) != 0) 2313 GenerateArg(Args, OPT_verify_ignore_unexpected_EQ, "warning", SA); 2314 if (static_cast<unsigned>(VIU & DiagnosticLevelMask::Error) != 0) 2315 GenerateArg(Args, OPT_verify_ignore_unexpected_EQ, "error", SA); 2316 } 2317 2318 for (const auto &Warning : Opts.Warnings) { 2319 // This option is automatically generated from UndefPrefixes. 2320 if (Warning == "undef-prefix") 2321 continue; 2322 Args.push_back(SA(StringRef("-W") + Warning)); 2323 } 2324 2325 for (const auto &Remark : Opts.Remarks) { 2326 // These arguments are generated from OptimizationRemark fields of 2327 // CodeGenOptions. 2328 StringRef IgnoredRemarks[] = {"pass", "no-pass", 2329 "pass-analysis", "no-pass-analysis", 2330 "pass-missed", "no-pass-missed"}; 2331 if (llvm::is_contained(IgnoredRemarks, Remark)) 2332 continue; 2333 2334 Args.push_back(SA(StringRef("-R") + Remark)); 2335 } 2336 } 2337 2338 std::unique_ptr<DiagnosticOptions> 2339 clang::CreateAndPopulateDiagOpts(ArrayRef<const char *> Argv) { 2340 auto DiagOpts = std::make_unique<DiagnosticOptions>(); 2341 unsigned MissingArgIndex, MissingArgCount; 2342 InputArgList Args = getDriverOptTable().ParseArgs( 2343 Argv.slice(1), MissingArgIndex, MissingArgCount); 2344 // We ignore MissingArgCount and the return value of ParseDiagnosticArgs. 2345 // Any errors that would be diagnosed here will also be diagnosed later, 2346 // when the DiagnosticsEngine actually exists. 2347 (void)ParseDiagnosticArgs(*DiagOpts, Args); 2348 return DiagOpts; 2349 } 2350 2351 bool clang::ParseDiagnosticArgs(DiagnosticOptions &Opts, ArgList &Args, 2352 DiagnosticsEngine *Diags, 2353 bool DefaultDiagColor) { 2354 std::optional<DiagnosticsEngine> IgnoringDiags; 2355 if (!Diags) { 2356 IgnoringDiags.emplace(new DiagnosticIDs(), new DiagnosticOptions(), 2357 new IgnoringDiagConsumer()); 2358 Diags = &*IgnoringDiags; 2359 } 2360 2361 unsigned NumErrorsBefore = Diags->getNumErrors(); 2362 2363 // The key paths of diagnostic options defined in Options.td start with 2364 // "DiagnosticOpts->". Let's provide the expected variable name and type. 2365 DiagnosticOptions *DiagnosticOpts = &Opts; 2366 2367 #define DIAG_OPTION_WITH_MARSHALLING(...) \ 2368 PARSE_OPTION_WITH_MARSHALLING(Args, *Diags, __VA_ARGS__) 2369 #include "clang/Driver/Options.inc" 2370 #undef DIAG_OPTION_WITH_MARSHALLING 2371 2372 llvm::sys::Process::UseANSIEscapeCodes(Opts.UseANSIEscapeCodes); 2373 2374 if (Arg *A = 2375 Args.getLastArg(OPT_diagnostic_serialized_file, OPT__serialize_diags)) 2376 Opts.DiagnosticSerializationFile = A->getValue(); 2377 Opts.ShowColors = parseShowColorsArgs(Args, DefaultDiagColor); 2378 2379 Opts.VerifyDiagnostics = Args.hasArg(OPT_verify) || Args.hasArg(OPT_verify_EQ); 2380 Opts.VerifyPrefixes = Args.getAllArgValues(OPT_verify_EQ); 2381 if (Args.hasArg(OPT_verify)) 2382 Opts.VerifyPrefixes.push_back("expected"); 2383 // Keep VerifyPrefixes in its original order for the sake of diagnostics, and 2384 // then sort it to prepare for fast lookup using std::binary_search. 2385 if (!checkVerifyPrefixes(Opts.VerifyPrefixes, *Diags)) 2386 Opts.VerifyDiagnostics = false; 2387 else 2388 llvm::sort(Opts.VerifyPrefixes); 2389 DiagnosticLevelMask DiagMask = DiagnosticLevelMask::None; 2390 parseDiagnosticLevelMask( 2391 "-verify-ignore-unexpected=", 2392 Args.getAllArgValues(OPT_verify_ignore_unexpected_EQ), *Diags, DiagMask); 2393 if (Args.hasArg(OPT_verify_ignore_unexpected)) 2394 DiagMask = DiagnosticLevelMask::All; 2395 Opts.setVerifyIgnoreUnexpected(DiagMask); 2396 if (Opts.TabStop == 0 || Opts.TabStop > DiagnosticOptions::MaxTabStop) { 2397 Diags->Report(diag::warn_ignoring_ftabstop_value) 2398 << Opts.TabStop << DiagnosticOptions::DefaultTabStop; 2399 Opts.TabStop = DiagnosticOptions::DefaultTabStop; 2400 } 2401 2402 addDiagnosticArgs(Args, OPT_W_Group, OPT_W_value_Group, Opts.Warnings); 2403 addDiagnosticArgs(Args, OPT_R_Group, OPT_R_value_Group, Opts.Remarks); 2404 2405 return Diags->getNumErrors() == NumErrorsBefore; 2406 } 2407 2408 /// Parse the argument to the -ftest-module-file-extension 2409 /// command-line argument. 2410 /// 2411 /// \returns true on error, false on success. 2412 static bool parseTestModuleFileExtensionArg(StringRef Arg, 2413 std::string &BlockName, 2414 unsigned &MajorVersion, 2415 unsigned &MinorVersion, 2416 bool &Hashed, 2417 std::string &UserInfo) { 2418 SmallVector<StringRef, 5> Args; 2419 Arg.split(Args, ':', 5); 2420 if (Args.size() < 5) 2421 return true; 2422 2423 BlockName = std::string(Args[0]); 2424 if (Args[1].getAsInteger(10, MajorVersion)) return true; 2425 if (Args[2].getAsInteger(10, MinorVersion)) return true; 2426 if (Args[3].getAsInteger(2, Hashed)) return true; 2427 if (Args.size() > 4) 2428 UserInfo = std::string(Args[4]); 2429 return false; 2430 } 2431 2432 /// Return a table that associates command line option specifiers with the 2433 /// frontend action. Note: The pair {frontend::PluginAction, OPT_plugin} is 2434 /// intentionally missing, as this case is handled separately from other 2435 /// frontend options. 2436 static const auto &getFrontendActionTable() { 2437 static const std::pair<frontend::ActionKind, unsigned> Table[] = { 2438 {frontend::ASTDeclList, OPT_ast_list}, 2439 2440 {frontend::ASTDump, OPT_ast_dump_all_EQ}, 2441 {frontend::ASTDump, OPT_ast_dump_all}, 2442 {frontend::ASTDump, OPT_ast_dump_EQ}, 2443 {frontend::ASTDump, OPT_ast_dump}, 2444 {frontend::ASTDump, OPT_ast_dump_lookups}, 2445 {frontend::ASTDump, OPT_ast_dump_decl_types}, 2446 2447 {frontend::ASTPrint, OPT_ast_print}, 2448 {frontend::ASTView, OPT_ast_view}, 2449 {frontend::DumpCompilerOptions, OPT_compiler_options_dump}, 2450 {frontend::DumpRawTokens, OPT_dump_raw_tokens}, 2451 {frontend::DumpTokens, OPT_dump_tokens}, 2452 {frontend::EmitAssembly, OPT_S}, 2453 {frontend::EmitBC, OPT_emit_llvm_bc}, 2454 {frontend::EmitHTML, OPT_emit_html}, 2455 {frontend::EmitLLVM, OPT_emit_llvm}, 2456 {frontend::EmitLLVMOnly, OPT_emit_llvm_only}, 2457 {frontend::EmitCodeGenOnly, OPT_emit_codegen_only}, 2458 {frontend::EmitObj, OPT_emit_obj}, 2459 {frontend::ExtractAPI, OPT_extract_api}, 2460 2461 {frontend::FixIt, OPT_fixit_EQ}, 2462 {frontend::FixIt, OPT_fixit}, 2463 2464 {frontend::GenerateModule, OPT_emit_module}, 2465 {frontend::GenerateModuleInterface, OPT_emit_module_interface}, 2466 {frontend::GenerateHeaderUnit, OPT_emit_header_unit}, 2467 {frontend::GeneratePCH, OPT_emit_pch}, 2468 {frontend::GenerateInterfaceStubs, OPT_emit_interface_stubs}, 2469 {frontend::InitOnly, OPT_init_only}, 2470 {frontend::ParseSyntaxOnly, OPT_fsyntax_only}, 2471 {frontend::ModuleFileInfo, OPT_module_file_info}, 2472 {frontend::VerifyPCH, OPT_verify_pch}, 2473 {frontend::PrintPreamble, OPT_print_preamble}, 2474 {frontend::PrintPreprocessedInput, OPT_E}, 2475 {frontend::TemplightDump, OPT_templight_dump}, 2476 {frontend::RewriteMacros, OPT_rewrite_macros}, 2477 {frontend::RewriteObjC, OPT_rewrite_objc}, 2478 {frontend::RewriteTest, OPT_rewrite_test}, 2479 {frontend::RunAnalysis, OPT_analyze}, 2480 {frontend::MigrateSource, OPT_migrate}, 2481 {frontend::RunPreprocessorOnly, OPT_Eonly}, 2482 {frontend::PrintDependencyDirectivesSourceMinimizerOutput, 2483 OPT_print_dependency_directives_minimized_source}, 2484 }; 2485 2486 return Table; 2487 } 2488 2489 /// Maps command line option to frontend action. 2490 static std::optional<frontend::ActionKind> 2491 getFrontendAction(OptSpecifier &Opt) { 2492 for (const auto &ActionOpt : getFrontendActionTable()) 2493 if (ActionOpt.second == Opt.getID()) 2494 return ActionOpt.first; 2495 2496 return std::nullopt; 2497 } 2498 2499 /// Maps frontend action to command line option. 2500 static std::optional<OptSpecifier> 2501 getProgramActionOpt(frontend::ActionKind ProgramAction) { 2502 for (const auto &ActionOpt : getFrontendActionTable()) 2503 if (ActionOpt.first == ProgramAction) 2504 return OptSpecifier(ActionOpt.second); 2505 2506 return std::nullopt; 2507 } 2508 2509 static void GenerateFrontendArgs(const FrontendOptions &Opts, 2510 SmallVectorImpl<const char *> &Args, 2511 CompilerInvocation::StringAllocator SA, 2512 bool IsHeader) { 2513 const FrontendOptions &FrontendOpts = Opts; 2514 #define FRONTEND_OPTION_WITH_MARSHALLING(...) \ 2515 GENERATE_OPTION_WITH_MARSHALLING(Args, SA, __VA_ARGS__) 2516 #include "clang/Driver/Options.inc" 2517 #undef FRONTEND_OPTION_WITH_MARSHALLING 2518 2519 std::optional<OptSpecifier> ProgramActionOpt = 2520 getProgramActionOpt(Opts.ProgramAction); 2521 2522 // Generating a simple flag covers most frontend actions. 2523 std::function<void()> GenerateProgramAction = [&]() { 2524 GenerateArg(Args, *ProgramActionOpt, SA); 2525 }; 2526 2527 if (!ProgramActionOpt) { 2528 // PluginAction is the only program action handled separately. 2529 assert(Opts.ProgramAction == frontend::PluginAction && 2530 "Frontend action without option."); 2531 GenerateProgramAction = [&]() { 2532 GenerateArg(Args, OPT_plugin, Opts.ActionName, SA); 2533 }; 2534 } 2535 2536 // FIXME: Simplify the complex 'AST dump' command line. 2537 if (Opts.ProgramAction == frontend::ASTDump) { 2538 GenerateProgramAction = [&]() { 2539 // ASTDumpLookups, ASTDumpDeclTypes and ASTDumpFilter are generated via 2540 // marshalling infrastructure. 2541 2542 if (Opts.ASTDumpFormat != ADOF_Default) { 2543 StringRef Format; 2544 switch (Opts.ASTDumpFormat) { 2545 case ADOF_Default: 2546 llvm_unreachable("Default AST dump format."); 2547 case ADOF_JSON: 2548 Format = "json"; 2549 break; 2550 } 2551 2552 if (Opts.ASTDumpAll) 2553 GenerateArg(Args, OPT_ast_dump_all_EQ, Format, SA); 2554 if (Opts.ASTDumpDecls) 2555 GenerateArg(Args, OPT_ast_dump_EQ, Format, SA); 2556 } else { 2557 if (Opts.ASTDumpAll) 2558 GenerateArg(Args, OPT_ast_dump_all, SA); 2559 if (Opts.ASTDumpDecls) 2560 GenerateArg(Args, OPT_ast_dump, SA); 2561 } 2562 }; 2563 } 2564 2565 if (Opts.ProgramAction == frontend::FixIt && !Opts.FixItSuffix.empty()) { 2566 GenerateProgramAction = [&]() { 2567 GenerateArg(Args, OPT_fixit_EQ, Opts.FixItSuffix, SA); 2568 }; 2569 } 2570 2571 GenerateProgramAction(); 2572 2573 for (const auto &PluginArgs : Opts.PluginArgs) { 2574 Option Opt = getDriverOptTable().getOption(OPT_plugin_arg); 2575 const char *Spelling = 2576 SA(Opt.getPrefix() + Opt.getName() + PluginArgs.first); 2577 for (const auto &PluginArg : PluginArgs.second) 2578 denormalizeString(Args, Spelling, SA, Opt.getKind(), 0, PluginArg); 2579 } 2580 2581 for (const auto &Ext : Opts.ModuleFileExtensions) 2582 if (auto *TestExt = dyn_cast_or_null<TestModuleFileExtension>(Ext.get())) 2583 GenerateArg(Args, OPT_ftest_module_file_extension_EQ, TestExt->str(), SA); 2584 2585 if (!Opts.CodeCompletionAt.FileName.empty()) 2586 GenerateArg(Args, OPT_code_completion_at, Opts.CodeCompletionAt.ToString(), 2587 SA); 2588 2589 for (const auto &Plugin : Opts.Plugins) 2590 GenerateArg(Args, OPT_load, Plugin, SA); 2591 2592 // ASTDumpDecls and ASTDumpAll already handled with ProgramAction. 2593 2594 for (const auto &ModuleFile : Opts.ModuleFiles) 2595 GenerateArg(Args, OPT_fmodule_file, ModuleFile, SA); 2596 2597 if (Opts.AuxTargetCPU) 2598 GenerateArg(Args, OPT_aux_target_cpu, *Opts.AuxTargetCPU, SA); 2599 2600 if (Opts.AuxTargetFeatures) 2601 for (const auto &Feature : *Opts.AuxTargetFeatures) 2602 GenerateArg(Args, OPT_aux_target_feature, Feature, SA); 2603 2604 { 2605 StringRef Preprocessed = Opts.DashX.isPreprocessed() ? "-cpp-output" : ""; 2606 StringRef ModuleMap = 2607 Opts.DashX.getFormat() == InputKind::ModuleMap ? "-module-map" : ""; 2608 StringRef HeaderUnit = ""; 2609 switch (Opts.DashX.getHeaderUnitKind()) { 2610 case InputKind::HeaderUnit_None: 2611 break; 2612 case InputKind::HeaderUnit_User: 2613 HeaderUnit = "-user"; 2614 break; 2615 case InputKind::HeaderUnit_System: 2616 HeaderUnit = "-system"; 2617 break; 2618 case InputKind::HeaderUnit_Abs: 2619 HeaderUnit = "-header-unit"; 2620 break; 2621 } 2622 StringRef Header = IsHeader ? "-header" : ""; 2623 2624 StringRef Lang; 2625 switch (Opts.DashX.getLanguage()) { 2626 case Language::C: 2627 Lang = "c"; 2628 break; 2629 case Language::OpenCL: 2630 Lang = "cl"; 2631 break; 2632 case Language::OpenCLCXX: 2633 Lang = "clcpp"; 2634 break; 2635 case Language::CUDA: 2636 Lang = "cuda"; 2637 break; 2638 case Language::HIP: 2639 Lang = "hip"; 2640 break; 2641 case Language::CXX: 2642 Lang = "c++"; 2643 break; 2644 case Language::ObjC: 2645 Lang = "objective-c"; 2646 break; 2647 case Language::ObjCXX: 2648 Lang = "objective-c++"; 2649 break; 2650 case Language::RenderScript: 2651 Lang = "renderscript"; 2652 break; 2653 case Language::Asm: 2654 Lang = "assembler-with-cpp"; 2655 break; 2656 case Language::Unknown: 2657 assert(Opts.DashX.getFormat() == InputKind::Precompiled && 2658 "Generating -x argument for unknown language (not precompiled)."); 2659 Lang = "ast"; 2660 break; 2661 case Language::LLVM_IR: 2662 Lang = "ir"; 2663 break; 2664 case Language::HLSL: 2665 Lang = "hlsl"; 2666 break; 2667 } 2668 2669 GenerateArg(Args, OPT_x, 2670 Lang + HeaderUnit + Header + ModuleMap + Preprocessed, SA); 2671 } 2672 2673 // OPT_INPUT has a unique class, generate it directly. 2674 for (const auto &Input : Opts.Inputs) 2675 Args.push_back(SA(Input.getFile())); 2676 } 2677 2678 static bool ParseFrontendArgs(FrontendOptions &Opts, ArgList &Args, 2679 DiagnosticsEngine &Diags, bool &IsHeaderFile) { 2680 unsigned NumErrorsBefore = Diags.getNumErrors(); 2681 2682 FrontendOptions &FrontendOpts = Opts; 2683 2684 #define FRONTEND_OPTION_WITH_MARSHALLING(...) \ 2685 PARSE_OPTION_WITH_MARSHALLING(Args, Diags, __VA_ARGS__) 2686 #include "clang/Driver/Options.inc" 2687 #undef FRONTEND_OPTION_WITH_MARSHALLING 2688 2689 Opts.ProgramAction = frontend::ParseSyntaxOnly; 2690 if (const Arg *A = Args.getLastArg(OPT_Action_Group)) { 2691 OptSpecifier Opt = OptSpecifier(A->getOption().getID()); 2692 std::optional<frontend::ActionKind> ProgramAction = getFrontendAction(Opt); 2693 assert(ProgramAction && "Option specifier not in Action_Group."); 2694 2695 if (ProgramAction == frontend::ASTDump && 2696 (Opt == OPT_ast_dump_all_EQ || Opt == OPT_ast_dump_EQ)) { 2697 unsigned Val = llvm::StringSwitch<unsigned>(A->getValue()) 2698 .CaseLower("default", ADOF_Default) 2699 .CaseLower("json", ADOF_JSON) 2700 .Default(std::numeric_limits<unsigned>::max()); 2701 2702 if (Val != std::numeric_limits<unsigned>::max()) 2703 Opts.ASTDumpFormat = static_cast<ASTDumpOutputFormat>(Val); 2704 else { 2705 Diags.Report(diag::err_drv_invalid_value) 2706 << A->getAsString(Args) << A->getValue(); 2707 Opts.ASTDumpFormat = ADOF_Default; 2708 } 2709 } 2710 2711 if (ProgramAction == frontend::FixIt && Opt == OPT_fixit_EQ) 2712 Opts.FixItSuffix = A->getValue(); 2713 2714 if (ProgramAction == frontend::GenerateInterfaceStubs) { 2715 StringRef ArgStr = 2716 Args.hasArg(OPT_interface_stub_version_EQ) 2717 ? Args.getLastArgValue(OPT_interface_stub_version_EQ) 2718 : "ifs-v1"; 2719 if (ArgStr == "experimental-yaml-elf-v1" || 2720 ArgStr == "experimental-ifs-v1" || ArgStr == "experimental-ifs-v2" || 2721 ArgStr == "experimental-tapi-elf-v1") { 2722 std::string ErrorMessage = 2723 "Invalid interface stub format: " + ArgStr.str() + 2724 " is deprecated."; 2725 Diags.Report(diag::err_drv_invalid_value) 2726 << "Must specify a valid interface stub format type, ie: " 2727 "-interface-stub-version=ifs-v1" 2728 << ErrorMessage; 2729 ProgramAction = frontend::ParseSyntaxOnly; 2730 } else if (!ArgStr.startswith("ifs-")) { 2731 std::string ErrorMessage = 2732 "Invalid interface stub format: " + ArgStr.str() + "."; 2733 Diags.Report(diag::err_drv_invalid_value) 2734 << "Must specify a valid interface stub format type, ie: " 2735 "-interface-stub-version=ifs-v1" 2736 << ErrorMessage; 2737 ProgramAction = frontend::ParseSyntaxOnly; 2738 } 2739 } 2740 2741 Opts.ProgramAction = *ProgramAction; 2742 } 2743 2744 if (const Arg* A = Args.getLastArg(OPT_plugin)) { 2745 Opts.Plugins.emplace_back(A->getValue(0)); 2746 Opts.ProgramAction = frontend::PluginAction; 2747 Opts.ActionName = A->getValue(); 2748 } 2749 for (const auto *AA : Args.filtered(OPT_plugin_arg)) 2750 Opts.PluginArgs[AA->getValue(0)].emplace_back(AA->getValue(1)); 2751 2752 for (const std::string &Arg : 2753 Args.getAllArgValues(OPT_ftest_module_file_extension_EQ)) { 2754 std::string BlockName; 2755 unsigned MajorVersion; 2756 unsigned MinorVersion; 2757 bool Hashed; 2758 std::string UserInfo; 2759 if (parseTestModuleFileExtensionArg(Arg, BlockName, MajorVersion, 2760 MinorVersion, Hashed, UserInfo)) { 2761 Diags.Report(diag::err_test_module_file_extension_format) << Arg; 2762 2763 continue; 2764 } 2765 2766 // Add the testing module file extension. 2767 Opts.ModuleFileExtensions.push_back( 2768 std::make_shared<TestModuleFileExtension>( 2769 BlockName, MajorVersion, MinorVersion, Hashed, UserInfo)); 2770 } 2771 2772 if (const Arg *A = Args.getLastArg(OPT_code_completion_at)) { 2773 Opts.CodeCompletionAt = 2774 ParsedSourceLocation::FromString(A->getValue()); 2775 if (Opts.CodeCompletionAt.FileName.empty()) 2776 Diags.Report(diag::err_drv_invalid_value) 2777 << A->getAsString(Args) << A->getValue(); 2778 } 2779 2780 Opts.Plugins = Args.getAllArgValues(OPT_load); 2781 Opts.ASTDumpDecls = Args.hasArg(OPT_ast_dump, OPT_ast_dump_EQ); 2782 Opts.ASTDumpAll = Args.hasArg(OPT_ast_dump_all, OPT_ast_dump_all_EQ); 2783 // Only the -fmodule-file=<file> form. 2784 for (const auto *A : Args.filtered(OPT_fmodule_file)) { 2785 StringRef Val = A->getValue(); 2786 if (!Val.contains('=')) 2787 Opts.ModuleFiles.push_back(std::string(Val)); 2788 } 2789 2790 if (Opts.ProgramAction != frontend::GenerateModule && Opts.IsSystemModule) 2791 Diags.Report(diag::err_drv_argument_only_allowed_with) << "-fsystem-module" 2792 << "-emit-module"; 2793 2794 if (Args.hasArg(OPT_aux_target_cpu)) 2795 Opts.AuxTargetCPU = std::string(Args.getLastArgValue(OPT_aux_target_cpu)); 2796 if (Args.hasArg(OPT_aux_target_feature)) 2797 Opts.AuxTargetFeatures = Args.getAllArgValues(OPT_aux_target_feature); 2798 2799 if (Opts.ARCMTAction != FrontendOptions::ARCMT_None && 2800 Opts.ObjCMTAction != FrontendOptions::ObjCMT_None) { 2801 Diags.Report(diag::err_drv_argument_not_allowed_with) 2802 << "ARC migration" << "ObjC migration"; 2803 } 2804 2805 InputKind DashX(Language::Unknown); 2806 if (const Arg *A = Args.getLastArg(OPT_x)) { 2807 StringRef XValue = A->getValue(); 2808 2809 // Parse suffixes: 2810 // '<lang>(-[{header-unit,user,system}-]header|[-module-map][-cpp-output])'. 2811 // FIXME: Supporting '<lang>-header-cpp-output' would be useful. 2812 bool Preprocessed = XValue.consume_back("-cpp-output"); 2813 bool ModuleMap = XValue.consume_back("-module-map"); 2814 // Detect and consume the header indicator. 2815 bool IsHeader = 2816 XValue != "precompiled-header" && XValue.consume_back("-header"); 2817 2818 // If we have c++-{user,system}-header, that indicates a header unit input 2819 // likewise, if the user put -fmodule-header together with a header with an 2820 // absolute path (header-unit-header). 2821 InputKind::HeaderUnitKind HUK = InputKind::HeaderUnit_None; 2822 if (IsHeader || Preprocessed) { 2823 if (XValue.consume_back("-header-unit")) 2824 HUK = InputKind::HeaderUnit_Abs; 2825 else if (XValue.consume_back("-system")) 2826 HUK = InputKind::HeaderUnit_System; 2827 else if (XValue.consume_back("-user")) 2828 HUK = InputKind::HeaderUnit_User; 2829 } 2830 2831 // The value set by this processing is an un-preprocessed source which is 2832 // not intended to be a module map or header unit. 2833 IsHeaderFile = IsHeader && !Preprocessed && !ModuleMap && 2834 HUK == InputKind::HeaderUnit_None; 2835 2836 // Principal languages. 2837 DashX = llvm::StringSwitch<InputKind>(XValue) 2838 .Case("c", Language::C) 2839 .Case("cl", Language::OpenCL) 2840 .Case("clcpp", Language::OpenCLCXX) 2841 .Case("cuda", Language::CUDA) 2842 .Case("hip", Language::HIP) 2843 .Case("c++", Language::CXX) 2844 .Case("objective-c", Language::ObjC) 2845 .Case("objective-c++", Language::ObjCXX) 2846 .Case("renderscript", Language::RenderScript) 2847 .Case("hlsl", Language::HLSL) 2848 .Default(Language::Unknown); 2849 2850 // "objc[++]-cpp-output" is an acceptable synonym for 2851 // "objective-c[++]-cpp-output". 2852 if (DashX.isUnknown() && Preprocessed && !IsHeaderFile && !ModuleMap && 2853 HUK == InputKind::HeaderUnit_None) 2854 DashX = llvm::StringSwitch<InputKind>(XValue) 2855 .Case("objc", Language::ObjC) 2856 .Case("objc++", Language::ObjCXX) 2857 .Default(Language::Unknown); 2858 2859 // Some special cases cannot be combined with suffixes. 2860 if (DashX.isUnknown() && !Preprocessed && !IsHeaderFile && !ModuleMap && 2861 HUK == InputKind::HeaderUnit_None) 2862 DashX = llvm::StringSwitch<InputKind>(XValue) 2863 .Case("cpp-output", InputKind(Language::C).getPreprocessed()) 2864 .Case("assembler-with-cpp", Language::Asm) 2865 .Cases("ast", "pcm", "precompiled-header", 2866 InputKind(Language::Unknown, InputKind::Precompiled)) 2867 .Case("ir", Language::LLVM_IR) 2868 .Default(Language::Unknown); 2869 2870 if (DashX.isUnknown()) 2871 Diags.Report(diag::err_drv_invalid_value) 2872 << A->getAsString(Args) << A->getValue(); 2873 2874 if (Preprocessed) 2875 DashX = DashX.getPreprocessed(); 2876 // A regular header is considered mutually exclusive with a header unit. 2877 if (HUK != InputKind::HeaderUnit_None) { 2878 DashX = DashX.withHeaderUnit(HUK); 2879 IsHeaderFile = true; 2880 } else if (IsHeaderFile) 2881 DashX = DashX.getHeader(); 2882 if (ModuleMap) 2883 DashX = DashX.withFormat(InputKind::ModuleMap); 2884 } 2885 2886 // '-' is the default input if none is given. 2887 std::vector<std::string> Inputs = Args.getAllArgValues(OPT_INPUT); 2888 Opts.Inputs.clear(); 2889 if (Inputs.empty()) 2890 Inputs.push_back("-"); 2891 2892 if (DashX.getHeaderUnitKind() != InputKind::HeaderUnit_None && 2893 Inputs.size() > 1) 2894 Diags.Report(diag::err_drv_header_unit_extra_inputs) << Inputs[1]; 2895 2896 for (unsigned i = 0, e = Inputs.size(); i != e; ++i) { 2897 InputKind IK = DashX; 2898 if (IK.isUnknown()) { 2899 IK = FrontendOptions::getInputKindForExtension( 2900 StringRef(Inputs[i]).rsplit('.').second); 2901 // FIXME: Warn on this? 2902 if (IK.isUnknown()) 2903 IK = Language::C; 2904 // FIXME: Remove this hack. 2905 if (i == 0) 2906 DashX = IK; 2907 } 2908 2909 bool IsSystem = false; 2910 2911 // The -emit-module action implicitly takes a module map. 2912 if (Opts.ProgramAction == frontend::GenerateModule && 2913 IK.getFormat() == InputKind::Source) { 2914 IK = IK.withFormat(InputKind::ModuleMap); 2915 IsSystem = Opts.IsSystemModule; 2916 } 2917 2918 Opts.Inputs.emplace_back(std::move(Inputs[i]), IK, IsSystem); 2919 } 2920 2921 Opts.DashX = DashX; 2922 2923 return Diags.getNumErrors() == NumErrorsBefore; 2924 } 2925 2926 std::string CompilerInvocation::GetResourcesPath(const char *Argv0, 2927 void *MainAddr) { 2928 std::string ClangExecutable = 2929 llvm::sys::fs::getMainExecutable(Argv0, MainAddr); 2930 return Driver::GetResourcesPath(ClangExecutable, CLANG_RESOURCE_DIR); 2931 } 2932 2933 static void GenerateHeaderSearchArgs(HeaderSearchOptions &Opts, 2934 SmallVectorImpl<const char *> &Args, 2935 CompilerInvocation::StringAllocator SA) { 2936 const HeaderSearchOptions *HeaderSearchOpts = &Opts; 2937 #define HEADER_SEARCH_OPTION_WITH_MARSHALLING(...) \ 2938 GENERATE_OPTION_WITH_MARSHALLING(Args, SA, __VA_ARGS__) 2939 #include "clang/Driver/Options.inc" 2940 #undef HEADER_SEARCH_OPTION_WITH_MARSHALLING 2941 2942 if (Opts.UseLibcxx) 2943 GenerateArg(Args, OPT_stdlib_EQ, "libc++", SA); 2944 2945 if (!Opts.ModuleCachePath.empty()) 2946 GenerateArg(Args, OPT_fmodules_cache_path, Opts.ModuleCachePath, SA); 2947 2948 for (const auto &File : Opts.PrebuiltModuleFiles) 2949 GenerateArg(Args, OPT_fmodule_file, File.first + "=" + File.second, SA); 2950 2951 for (const auto &Path : Opts.PrebuiltModulePaths) 2952 GenerateArg(Args, OPT_fprebuilt_module_path, Path, SA); 2953 2954 for (const auto &Macro : Opts.ModulesIgnoreMacros) 2955 GenerateArg(Args, OPT_fmodules_ignore_macro, Macro.val(), SA); 2956 2957 auto Matches = [](const HeaderSearchOptions::Entry &Entry, 2958 llvm::ArrayRef<frontend::IncludeDirGroup> Groups, 2959 std::optional<bool> IsFramework, 2960 std::optional<bool> IgnoreSysRoot) { 2961 return llvm::is_contained(Groups, Entry.Group) && 2962 (!IsFramework || (Entry.IsFramework == *IsFramework)) && 2963 (!IgnoreSysRoot || (Entry.IgnoreSysRoot == *IgnoreSysRoot)); 2964 }; 2965 2966 auto It = Opts.UserEntries.begin(); 2967 auto End = Opts.UserEntries.end(); 2968 2969 // Add -I..., -F..., and -index-header-map options in order. 2970 for (; It < End && Matches(*It, {frontend::IndexHeaderMap, frontend::Angled}, 2971 std::nullopt, true); 2972 ++It) { 2973 OptSpecifier Opt = [It, Matches]() { 2974 if (Matches(*It, frontend::IndexHeaderMap, true, true)) 2975 return OPT_F; 2976 if (Matches(*It, frontend::IndexHeaderMap, false, true)) 2977 return OPT_I; 2978 if (Matches(*It, frontend::Angled, true, true)) 2979 return OPT_F; 2980 if (Matches(*It, frontend::Angled, false, true)) 2981 return OPT_I; 2982 llvm_unreachable("Unexpected HeaderSearchOptions::Entry."); 2983 }(); 2984 2985 if (It->Group == frontend::IndexHeaderMap) 2986 GenerateArg(Args, OPT_index_header_map, SA); 2987 GenerateArg(Args, Opt, It->Path, SA); 2988 }; 2989 2990 // Note: some paths that came from "[-iprefix=xx] -iwithprefixbefore=yy" may 2991 // have already been generated as "-I[xx]yy". If that's the case, their 2992 // position on command line was such that this has no semantic impact on 2993 // include paths. 2994 for (; It < End && 2995 Matches(*It, {frontend::After, frontend::Angled}, false, true); 2996 ++It) { 2997 OptSpecifier Opt = 2998 It->Group == frontend::After ? OPT_iwithprefix : OPT_iwithprefixbefore; 2999 GenerateArg(Args, Opt, It->Path, SA); 3000 } 3001 3002 // Note: Some paths that came from "-idirafter=xxyy" may have already been 3003 // generated as "-iwithprefix=xxyy". If that's the case, their position on 3004 // command line was such that this has no semantic impact on include paths. 3005 for (; It < End && Matches(*It, {frontend::After}, false, true); ++It) 3006 GenerateArg(Args, OPT_idirafter, It->Path, SA); 3007 for (; It < End && Matches(*It, {frontend::Quoted}, false, true); ++It) 3008 GenerateArg(Args, OPT_iquote, It->Path, SA); 3009 for (; It < End && Matches(*It, {frontend::System}, false, std::nullopt); 3010 ++It) 3011 GenerateArg(Args, It->IgnoreSysRoot ? OPT_isystem : OPT_iwithsysroot, 3012 It->Path, SA); 3013 for (; It < End && Matches(*It, {frontend::System}, true, true); ++It) 3014 GenerateArg(Args, OPT_iframework, It->Path, SA); 3015 for (; It < End && Matches(*It, {frontend::System}, true, false); ++It) 3016 GenerateArg(Args, OPT_iframeworkwithsysroot, It->Path, SA); 3017 3018 // Add the paths for the various language specific isystem flags. 3019 for (; It < End && Matches(*It, {frontend::CSystem}, false, true); ++It) 3020 GenerateArg(Args, OPT_c_isystem, It->Path, SA); 3021 for (; It < End && Matches(*It, {frontend::CXXSystem}, false, true); ++It) 3022 GenerateArg(Args, OPT_cxx_isystem, It->Path, SA); 3023 for (; It < End && Matches(*It, {frontend::ObjCSystem}, false, true); ++It) 3024 GenerateArg(Args, OPT_objc_isystem, It->Path, SA); 3025 for (; It < End && Matches(*It, {frontend::ObjCXXSystem}, false, true); ++It) 3026 GenerateArg(Args, OPT_objcxx_isystem, It->Path, SA); 3027 3028 // Add the internal paths from a driver that detects standard include paths. 3029 // Note: Some paths that came from "-internal-isystem" arguments may have 3030 // already been generated as "-isystem". If that's the case, their position on 3031 // command line was such that this has no semantic impact on include paths. 3032 for (; It < End && 3033 Matches(*It, {frontend::System, frontend::ExternCSystem}, false, true); 3034 ++It) { 3035 OptSpecifier Opt = It->Group == frontend::System 3036 ? OPT_internal_isystem 3037 : OPT_internal_externc_isystem; 3038 GenerateArg(Args, Opt, It->Path, SA); 3039 } 3040 3041 assert(It == End && "Unhandled HeaderSearchOption::Entry."); 3042 3043 // Add the path prefixes which are implicitly treated as being system headers. 3044 for (const auto &P : Opts.SystemHeaderPrefixes) { 3045 OptSpecifier Opt = P.IsSystemHeader ? OPT_system_header_prefix 3046 : OPT_no_system_header_prefix; 3047 GenerateArg(Args, Opt, P.Prefix, SA); 3048 } 3049 3050 for (const std::string &F : Opts.VFSOverlayFiles) 3051 GenerateArg(Args, OPT_ivfsoverlay, F, SA); 3052 } 3053 3054 static bool ParseHeaderSearchArgs(HeaderSearchOptions &Opts, ArgList &Args, 3055 DiagnosticsEngine &Diags, 3056 const std::string &WorkingDir) { 3057 unsigned NumErrorsBefore = Diags.getNumErrors(); 3058 3059 HeaderSearchOptions *HeaderSearchOpts = &Opts; 3060 3061 #define HEADER_SEARCH_OPTION_WITH_MARSHALLING(...) \ 3062 PARSE_OPTION_WITH_MARSHALLING(Args, Diags, __VA_ARGS__) 3063 #include "clang/Driver/Options.inc" 3064 #undef HEADER_SEARCH_OPTION_WITH_MARSHALLING 3065 3066 if (const Arg *A = Args.getLastArg(OPT_stdlib_EQ)) 3067 Opts.UseLibcxx = (strcmp(A->getValue(), "libc++") == 0); 3068 3069 // Canonicalize -fmodules-cache-path before storing it. 3070 SmallString<128> P(Args.getLastArgValue(OPT_fmodules_cache_path)); 3071 if (!(P.empty() || llvm::sys::path::is_absolute(P))) { 3072 if (WorkingDir.empty()) 3073 llvm::sys::fs::make_absolute(P); 3074 else 3075 llvm::sys::fs::make_absolute(WorkingDir, P); 3076 } 3077 llvm::sys::path::remove_dots(P); 3078 Opts.ModuleCachePath = std::string(P.str()); 3079 3080 // Only the -fmodule-file=<name>=<file> form. 3081 for (const auto *A : Args.filtered(OPT_fmodule_file)) { 3082 StringRef Val = A->getValue(); 3083 if (Val.contains('=')) { 3084 auto Split = Val.split('='); 3085 Opts.PrebuiltModuleFiles.insert( 3086 {std::string(Split.first), std::string(Split.second)}); 3087 } 3088 } 3089 for (const auto *A : Args.filtered(OPT_fprebuilt_module_path)) 3090 Opts.AddPrebuiltModulePath(A->getValue()); 3091 3092 for (const auto *A : Args.filtered(OPT_fmodules_ignore_macro)) { 3093 StringRef MacroDef = A->getValue(); 3094 Opts.ModulesIgnoreMacros.insert( 3095 llvm::CachedHashString(MacroDef.split('=').first)); 3096 } 3097 3098 // Add -I..., -F..., and -index-header-map options in order. 3099 bool IsIndexHeaderMap = false; 3100 bool IsSysrootSpecified = 3101 Args.hasArg(OPT__sysroot_EQ) || Args.hasArg(OPT_isysroot); 3102 for (const auto *A : Args.filtered(OPT_I, OPT_F, OPT_index_header_map)) { 3103 if (A->getOption().matches(OPT_index_header_map)) { 3104 // -index-header-map applies to the next -I or -F. 3105 IsIndexHeaderMap = true; 3106 continue; 3107 } 3108 3109 frontend::IncludeDirGroup Group = 3110 IsIndexHeaderMap ? frontend::IndexHeaderMap : frontend::Angled; 3111 3112 bool IsFramework = A->getOption().matches(OPT_F); 3113 std::string Path = A->getValue(); 3114 3115 if (IsSysrootSpecified && !IsFramework && A->getValue()[0] == '=') { 3116 SmallString<32> Buffer; 3117 llvm::sys::path::append(Buffer, Opts.Sysroot, 3118 llvm::StringRef(A->getValue()).substr(1)); 3119 Path = std::string(Buffer.str()); 3120 } 3121 3122 Opts.AddPath(Path, Group, IsFramework, 3123 /*IgnoreSysroot*/ true); 3124 IsIndexHeaderMap = false; 3125 } 3126 3127 // Add -iprefix/-iwithprefix/-iwithprefixbefore options. 3128 StringRef Prefix = ""; // FIXME: This isn't the correct default prefix. 3129 for (const auto *A : 3130 Args.filtered(OPT_iprefix, OPT_iwithprefix, OPT_iwithprefixbefore)) { 3131 if (A->getOption().matches(OPT_iprefix)) 3132 Prefix = A->getValue(); 3133 else if (A->getOption().matches(OPT_iwithprefix)) 3134 Opts.AddPath(Prefix.str() + A->getValue(), frontend::After, false, true); 3135 else 3136 Opts.AddPath(Prefix.str() + A->getValue(), frontend::Angled, false, true); 3137 } 3138 3139 for (const auto *A : Args.filtered(OPT_idirafter)) 3140 Opts.AddPath(A->getValue(), frontend::After, false, true); 3141 for (const auto *A : Args.filtered(OPT_iquote)) 3142 Opts.AddPath(A->getValue(), frontend::Quoted, false, true); 3143 for (const auto *A : Args.filtered(OPT_isystem, OPT_iwithsysroot)) 3144 Opts.AddPath(A->getValue(), frontend::System, false, 3145 !A->getOption().matches(OPT_iwithsysroot)); 3146 for (const auto *A : Args.filtered(OPT_iframework)) 3147 Opts.AddPath(A->getValue(), frontend::System, true, true); 3148 for (const auto *A : Args.filtered(OPT_iframeworkwithsysroot)) 3149 Opts.AddPath(A->getValue(), frontend::System, /*IsFramework=*/true, 3150 /*IgnoreSysRoot=*/false); 3151 3152 // Add the paths for the various language specific isystem flags. 3153 for (const auto *A : Args.filtered(OPT_c_isystem)) 3154 Opts.AddPath(A->getValue(), frontend::CSystem, false, true); 3155 for (const auto *A : Args.filtered(OPT_cxx_isystem)) 3156 Opts.AddPath(A->getValue(), frontend::CXXSystem, false, true); 3157 for (const auto *A : Args.filtered(OPT_objc_isystem)) 3158 Opts.AddPath(A->getValue(), frontend::ObjCSystem, false,true); 3159 for (const auto *A : Args.filtered(OPT_objcxx_isystem)) 3160 Opts.AddPath(A->getValue(), frontend::ObjCXXSystem, false, true); 3161 3162 // Add the internal paths from a driver that detects standard include paths. 3163 for (const auto *A : 3164 Args.filtered(OPT_internal_isystem, OPT_internal_externc_isystem)) { 3165 frontend::IncludeDirGroup Group = frontend::System; 3166 if (A->getOption().matches(OPT_internal_externc_isystem)) 3167 Group = frontend::ExternCSystem; 3168 Opts.AddPath(A->getValue(), Group, false, true); 3169 } 3170 3171 // Add the path prefixes which are implicitly treated as being system headers. 3172 for (const auto *A : 3173 Args.filtered(OPT_system_header_prefix, OPT_no_system_header_prefix)) 3174 Opts.AddSystemHeaderPrefix( 3175 A->getValue(), A->getOption().matches(OPT_system_header_prefix)); 3176 3177 for (const auto *A : Args.filtered(OPT_ivfsoverlay, OPT_vfsoverlay)) 3178 Opts.AddVFSOverlayFile(A->getValue()); 3179 3180 return Diags.getNumErrors() == NumErrorsBefore; 3181 } 3182 3183 /// Check if input file kind and language standard are compatible. 3184 static bool IsInputCompatibleWithStandard(InputKind IK, 3185 const LangStandard &S) { 3186 switch (IK.getLanguage()) { 3187 case Language::Unknown: 3188 case Language::LLVM_IR: 3189 llvm_unreachable("should not parse language flags for this input"); 3190 3191 case Language::C: 3192 case Language::ObjC: 3193 case Language::RenderScript: 3194 return S.getLanguage() == Language::C; 3195 3196 case Language::OpenCL: 3197 return S.getLanguage() == Language::OpenCL || 3198 S.getLanguage() == Language::OpenCLCXX; 3199 3200 case Language::OpenCLCXX: 3201 return S.getLanguage() == Language::OpenCLCXX; 3202 3203 case Language::CXX: 3204 case Language::ObjCXX: 3205 return S.getLanguage() == Language::CXX; 3206 3207 case Language::CUDA: 3208 // FIXME: What -std= values should be permitted for CUDA compilations? 3209 return S.getLanguage() == Language::CUDA || 3210 S.getLanguage() == Language::CXX; 3211 3212 case Language::HIP: 3213 return S.getLanguage() == Language::CXX || S.getLanguage() == Language::HIP; 3214 3215 case Language::Asm: 3216 // Accept (and ignore) all -std= values. 3217 // FIXME: The -std= value is not ignored; it affects the tokenization 3218 // and preprocessing rules if we're preprocessing this asm input. 3219 return true; 3220 3221 case Language::HLSL: 3222 return S.getLanguage() == Language::HLSL; 3223 } 3224 3225 llvm_unreachable("unexpected input language"); 3226 } 3227 3228 /// Get language name for given input kind. 3229 static StringRef GetInputKindName(InputKind IK) { 3230 switch (IK.getLanguage()) { 3231 case Language::C: 3232 return "C"; 3233 case Language::ObjC: 3234 return "Objective-C"; 3235 case Language::CXX: 3236 return "C++"; 3237 case Language::ObjCXX: 3238 return "Objective-C++"; 3239 case Language::OpenCL: 3240 return "OpenCL"; 3241 case Language::OpenCLCXX: 3242 return "C++ for OpenCL"; 3243 case Language::CUDA: 3244 return "CUDA"; 3245 case Language::RenderScript: 3246 return "RenderScript"; 3247 case Language::HIP: 3248 return "HIP"; 3249 3250 case Language::Asm: 3251 return "Asm"; 3252 case Language::LLVM_IR: 3253 return "LLVM IR"; 3254 3255 case Language::HLSL: 3256 return "HLSL"; 3257 3258 case Language::Unknown: 3259 break; 3260 } 3261 llvm_unreachable("unknown input language"); 3262 } 3263 3264 void CompilerInvocation::GenerateLangArgs(const LangOptions &Opts, 3265 SmallVectorImpl<const char *> &Args, 3266 StringAllocator SA, 3267 const llvm::Triple &T, InputKind IK) { 3268 if (IK.getFormat() == InputKind::Precompiled || 3269 IK.getLanguage() == Language::LLVM_IR) { 3270 if (Opts.ObjCAutoRefCount) 3271 GenerateArg(Args, OPT_fobjc_arc, SA); 3272 if (Opts.PICLevel != 0) 3273 GenerateArg(Args, OPT_pic_level, Twine(Opts.PICLevel), SA); 3274 if (Opts.PIE) 3275 GenerateArg(Args, OPT_pic_is_pie, SA); 3276 for (StringRef Sanitizer : serializeSanitizerKinds(Opts.Sanitize)) 3277 GenerateArg(Args, OPT_fsanitize_EQ, Sanitizer, SA); 3278 3279 return; 3280 } 3281 3282 OptSpecifier StdOpt; 3283 switch (Opts.LangStd) { 3284 case LangStandard::lang_opencl10: 3285 case LangStandard::lang_opencl11: 3286 case LangStandard::lang_opencl12: 3287 case LangStandard::lang_opencl20: 3288 case LangStandard::lang_opencl30: 3289 case LangStandard::lang_openclcpp10: 3290 case LangStandard::lang_openclcpp2021: 3291 StdOpt = OPT_cl_std_EQ; 3292 break; 3293 default: 3294 StdOpt = OPT_std_EQ; 3295 break; 3296 } 3297 3298 auto LangStandard = LangStandard::getLangStandardForKind(Opts.LangStd); 3299 GenerateArg(Args, StdOpt, LangStandard.getName(), SA); 3300 3301 if (Opts.IncludeDefaultHeader) 3302 GenerateArg(Args, OPT_finclude_default_header, SA); 3303 if (Opts.DeclareOpenCLBuiltins) 3304 GenerateArg(Args, OPT_fdeclare_opencl_builtins, SA); 3305 3306 const LangOptions *LangOpts = &Opts; 3307 3308 #define LANG_OPTION_WITH_MARSHALLING(...) \ 3309 GENERATE_OPTION_WITH_MARSHALLING(Args, SA, __VA_ARGS__) 3310 #include "clang/Driver/Options.inc" 3311 #undef LANG_OPTION_WITH_MARSHALLING 3312 3313 // The '-fcf-protection=' option is generated by CodeGenOpts generator. 3314 3315 if (Opts.ObjC) { 3316 GenerateArg(Args, OPT_fobjc_runtime_EQ, Opts.ObjCRuntime.getAsString(), SA); 3317 3318 if (Opts.GC == LangOptions::GCOnly) 3319 GenerateArg(Args, OPT_fobjc_gc_only, SA); 3320 else if (Opts.GC == LangOptions::HybridGC) 3321 GenerateArg(Args, OPT_fobjc_gc, SA); 3322 else if (Opts.ObjCAutoRefCount == 1) 3323 GenerateArg(Args, OPT_fobjc_arc, SA); 3324 3325 if (Opts.ObjCWeakRuntime) 3326 GenerateArg(Args, OPT_fobjc_runtime_has_weak, SA); 3327 3328 if (Opts.ObjCWeak) 3329 GenerateArg(Args, OPT_fobjc_weak, SA); 3330 3331 if (Opts.ObjCSubscriptingLegacyRuntime) 3332 GenerateArg(Args, OPT_fobjc_subscripting_legacy_runtime, SA); 3333 } 3334 3335 if (Opts.GNUCVersion != 0) { 3336 unsigned Major = Opts.GNUCVersion / 100 / 100; 3337 unsigned Minor = (Opts.GNUCVersion / 100) % 100; 3338 unsigned Patch = Opts.GNUCVersion % 100; 3339 GenerateArg(Args, OPT_fgnuc_version_EQ, 3340 Twine(Major) + "." + Twine(Minor) + "." + Twine(Patch), SA); 3341 } 3342 3343 if (Opts.IgnoreXCOFFVisibility) 3344 GenerateArg(Args, OPT_mignore_xcoff_visibility, SA); 3345 3346 if (Opts.SignedOverflowBehavior == LangOptions::SOB_Trapping) { 3347 GenerateArg(Args, OPT_ftrapv, SA); 3348 GenerateArg(Args, OPT_ftrapv_handler, Opts.OverflowHandler, SA); 3349 } else if (Opts.SignedOverflowBehavior == LangOptions::SOB_Defined) { 3350 GenerateArg(Args, OPT_fwrapv, SA); 3351 } 3352 3353 if (Opts.MSCompatibilityVersion != 0) { 3354 unsigned Major = Opts.MSCompatibilityVersion / 10000000; 3355 unsigned Minor = (Opts.MSCompatibilityVersion / 100000) % 100; 3356 unsigned Subminor = Opts.MSCompatibilityVersion % 100000; 3357 GenerateArg(Args, OPT_fms_compatibility_version, 3358 Twine(Major) + "." + Twine(Minor) + "." + Twine(Subminor), SA); 3359 } 3360 3361 if ((!Opts.GNUMode && !Opts.MSVCCompat && !Opts.CPlusPlus17) || T.isOSzOS()) { 3362 if (!Opts.Trigraphs) 3363 GenerateArg(Args, OPT_fno_trigraphs, SA); 3364 } else { 3365 if (Opts.Trigraphs) 3366 GenerateArg(Args, OPT_ftrigraphs, SA); 3367 } 3368 3369 if (Opts.Blocks && !(Opts.OpenCL && Opts.OpenCLVersion == 200)) 3370 GenerateArg(Args, OPT_fblocks, SA); 3371 3372 if (Opts.ConvergentFunctions && 3373 !(Opts.OpenCL || (Opts.CUDA && Opts.CUDAIsDevice) || Opts.SYCLIsDevice)) 3374 GenerateArg(Args, OPT_fconvergent_functions, SA); 3375 3376 if (Opts.NoBuiltin && !Opts.Freestanding) 3377 GenerateArg(Args, OPT_fno_builtin, SA); 3378 3379 if (!Opts.NoBuiltin) 3380 for (const auto &Func : Opts.NoBuiltinFuncs) 3381 GenerateArg(Args, OPT_fno_builtin_, Func, SA); 3382 3383 if (Opts.LongDoubleSize == 128) 3384 GenerateArg(Args, OPT_mlong_double_128, SA); 3385 else if (Opts.LongDoubleSize == 64) 3386 GenerateArg(Args, OPT_mlong_double_64, SA); 3387 else if (Opts.LongDoubleSize == 80) 3388 GenerateArg(Args, OPT_mlong_double_80, SA); 3389 3390 // Not generating '-mrtd', it's just an alias for '-fdefault-calling-conv='. 3391 3392 // OpenMP was requested via '-fopenmp', not implied by '-fopenmp-simd' or 3393 // '-fopenmp-targets='. 3394 if (Opts.OpenMP && !Opts.OpenMPSimd) { 3395 GenerateArg(Args, OPT_fopenmp, SA); 3396 3397 if (Opts.OpenMP != 50) 3398 GenerateArg(Args, OPT_fopenmp_version_EQ, Twine(Opts.OpenMP), SA); 3399 3400 if (!Opts.OpenMPUseTLS) 3401 GenerateArg(Args, OPT_fnoopenmp_use_tls, SA); 3402 3403 if (Opts.OpenMPIsDevice) 3404 GenerateArg(Args, OPT_fopenmp_is_device, SA); 3405 3406 if (Opts.OpenMPIRBuilder) 3407 GenerateArg(Args, OPT_fopenmp_enable_irbuilder, SA); 3408 } 3409 3410 if (Opts.OpenMPSimd) { 3411 GenerateArg(Args, OPT_fopenmp_simd, SA); 3412 3413 if (Opts.OpenMP != 50) 3414 GenerateArg(Args, OPT_fopenmp_version_EQ, Twine(Opts.OpenMP), SA); 3415 } 3416 3417 if (Opts.OpenMPThreadSubscription) 3418 GenerateArg(Args, OPT_fopenmp_assume_threads_oversubscription, SA); 3419 3420 if (Opts.OpenMPTeamSubscription) 3421 GenerateArg(Args, OPT_fopenmp_assume_teams_oversubscription, SA); 3422 3423 if (Opts.OpenMPTargetDebug != 0) 3424 GenerateArg(Args, OPT_fopenmp_target_debug_EQ, 3425 Twine(Opts.OpenMPTargetDebug), SA); 3426 3427 if (Opts.OpenMPCUDANumSMs != 0) 3428 GenerateArg(Args, OPT_fopenmp_cuda_number_of_sm_EQ, 3429 Twine(Opts.OpenMPCUDANumSMs), SA); 3430 3431 if (Opts.OpenMPCUDABlocksPerSM != 0) 3432 GenerateArg(Args, OPT_fopenmp_cuda_blocks_per_sm_EQ, 3433 Twine(Opts.OpenMPCUDABlocksPerSM), SA); 3434 3435 if (Opts.OpenMPCUDAReductionBufNum != 1024) 3436 GenerateArg(Args, OPT_fopenmp_cuda_teams_reduction_recs_num_EQ, 3437 Twine(Opts.OpenMPCUDAReductionBufNum), SA); 3438 3439 if (!Opts.OMPTargetTriples.empty()) { 3440 std::string Targets; 3441 llvm::raw_string_ostream OS(Targets); 3442 llvm::interleave( 3443 Opts.OMPTargetTriples, OS, 3444 [&OS](const llvm::Triple &T) { OS << T.str(); }, ","); 3445 GenerateArg(Args, OPT_fopenmp_targets_EQ, OS.str(), SA); 3446 } 3447 3448 if (!Opts.OMPHostIRFile.empty()) 3449 GenerateArg(Args, OPT_fopenmp_host_ir_file_path, Opts.OMPHostIRFile, SA); 3450 3451 if (Opts.OpenMPCUDAMode) 3452 GenerateArg(Args, OPT_fopenmp_cuda_mode, SA); 3453 3454 // The arguments used to set Optimize, OptimizeSize and NoInlineDefine are 3455 // generated from CodeGenOptions. 3456 3457 if (Opts.DefaultFPContractMode == LangOptions::FPM_Fast) 3458 GenerateArg(Args, OPT_ffp_contract, "fast", SA); 3459 else if (Opts.DefaultFPContractMode == LangOptions::FPM_On) 3460 GenerateArg(Args, OPT_ffp_contract, "on", SA); 3461 else if (Opts.DefaultFPContractMode == LangOptions::FPM_Off) 3462 GenerateArg(Args, OPT_ffp_contract, "off", SA); 3463 else if (Opts.DefaultFPContractMode == LangOptions::FPM_FastHonorPragmas) 3464 GenerateArg(Args, OPT_ffp_contract, "fast-honor-pragmas", SA); 3465 3466 for (StringRef Sanitizer : serializeSanitizerKinds(Opts.Sanitize)) 3467 GenerateArg(Args, OPT_fsanitize_EQ, Sanitizer, SA); 3468 3469 // Conflating '-fsanitize-system-ignorelist' and '-fsanitize-ignorelist'. 3470 for (const std::string &F : Opts.NoSanitizeFiles) 3471 GenerateArg(Args, OPT_fsanitize_ignorelist_EQ, F, SA); 3472 3473 if (Opts.getClangABICompat() == LangOptions::ClangABI::Ver3_8) 3474 GenerateArg(Args, OPT_fclang_abi_compat_EQ, "3.8", SA); 3475 else if (Opts.getClangABICompat() == LangOptions::ClangABI::Ver4) 3476 GenerateArg(Args, OPT_fclang_abi_compat_EQ, "4.0", SA); 3477 else if (Opts.getClangABICompat() == LangOptions::ClangABI::Ver6) 3478 GenerateArg(Args, OPT_fclang_abi_compat_EQ, "6.0", SA); 3479 else if (Opts.getClangABICompat() == LangOptions::ClangABI::Ver7) 3480 GenerateArg(Args, OPT_fclang_abi_compat_EQ, "7.0", SA); 3481 else if (Opts.getClangABICompat() == LangOptions::ClangABI::Ver9) 3482 GenerateArg(Args, OPT_fclang_abi_compat_EQ, "9.0", SA); 3483 else if (Opts.getClangABICompat() == LangOptions::ClangABI::Ver11) 3484 GenerateArg(Args, OPT_fclang_abi_compat_EQ, "11.0", SA); 3485 else if (Opts.getClangABICompat() == LangOptions::ClangABI::Ver12) 3486 GenerateArg(Args, OPT_fclang_abi_compat_EQ, "12.0", SA); 3487 else if (Opts.getClangABICompat() == LangOptions::ClangABI::Ver14) 3488 GenerateArg(Args, OPT_fclang_abi_compat_EQ, "14.0", SA); 3489 else if (Opts.getClangABICompat() == LangOptions::ClangABI::Ver15) 3490 GenerateArg(Args, OPT_fclang_abi_compat_EQ, "15.0", SA); 3491 3492 if (Opts.getSignReturnAddressScope() == 3493 LangOptions::SignReturnAddressScopeKind::All) 3494 GenerateArg(Args, OPT_msign_return_address_EQ, "all", SA); 3495 else if (Opts.getSignReturnAddressScope() == 3496 LangOptions::SignReturnAddressScopeKind::NonLeaf) 3497 GenerateArg(Args, OPT_msign_return_address_EQ, "non-leaf", SA); 3498 3499 if (Opts.getSignReturnAddressKey() == 3500 LangOptions::SignReturnAddressKeyKind::BKey) 3501 GenerateArg(Args, OPT_msign_return_address_key_EQ, "b_key", SA); 3502 3503 if (Opts.CXXABI) 3504 GenerateArg(Args, OPT_fcxx_abi_EQ, TargetCXXABI::getSpelling(*Opts.CXXABI), 3505 SA); 3506 3507 if (Opts.RelativeCXXABIVTables) 3508 GenerateArg(Args, OPT_fexperimental_relative_cxx_abi_vtables, SA); 3509 else 3510 GenerateArg(Args, OPT_fno_experimental_relative_cxx_abi_vtables, SA); 3511 3512 if (Opts.UseTargetPathSeparator) 3513 GenerateArg(Args, OPT_ffile_reproducible, SA); 3514 else 3515 GenerateArg(Args, OPT_fno_file_reproducible, SA); 3516 3517 for (const auto &MP : Opts.MacroPrefixMap) 3518 GenerateArg(Args, OPT_fmacro_prefix_map_EQ, MP.first + "=" + MP.second, SA); 3519 3520 if (!Opts.RandstructSeed.empty()) 3521 GenerateArg(Args, OPT_frandomize_layout_seed_EQ, Opts.RandstructSeed, SA); 3522 } 3523 3524 bool CompilerInvocation::ParseLangArgs(LangOptions &Opts, ArgList &Args, 3525 InputKind IK, const llvm::Triple &T, 3526 std::vector<std::string> &Includes, 3527 DiagnosticsEngine &Diags) { 3528 unsigned NumErrorsBefore = Diags.getNumErrors(); 3529 3530 if (IK.getFormat() == InputKind::Precompiled || 3531 IK.getLanguage() == Language::LLVM_IR) { 3532 // ObjCAAutoRefCount and Sanitize LangOpts are used to setup the 3533 // PassManager in BackendUtil.cpp. They need to be initialized no matter 3534 // what the input type is. 3535 if (Args.hasArg(OPT_fobjc_arc)) 3536 Opts.ObjCAutoRefCount = 1; 3537 // PICLevel and PIELevel are needed during code generation and this should 3538 // be set regardless of the input type. 3539 Opts.PICLevel = getLastArgIntValue(Args, OPT_pic_level, 0, Diags); 3540 Opts.PIE = Args.hasArg(OPT_pic_is_pie); 3541 parseSanitizerKinds("-fsanitize=", Args.getAllArgValues(OPT_fsanitize_EQ), 3542 Diags, Opts.Sanitize); 3543 3544 return Diags.getNumErrors() == NumErrorsBefore; 3545 } 3546 3547 // Other LangOpts are only initialized when the input is not AST or LLVM IR. 3548 // FIXME: Should we really be parsing this for an Language::Asm input? 3549 3550 // FIXME: Cleanup per-file based stuff. 3551 LangStandard::Kind LangStd = LangStandard::lang_unspecified; 3552 if (const Arg *A = Args.getLastArg(OPT_std_EQ)) { 3553 LangStd = LangStandard::getLangKind(A->getValue()); 3554 if (LangStd == LangStandard::lang_unspecified) { 3555 Diags.Report(diag::err_drv_invalid_value) 3556 << A->getAsString(Args) << A->getValue(); 3557 // Report supported standards with short description. 3558 for (unsigned KindValue = 0; 3559 KindValue != LangStandard::lang_unspecified; 3560 ++KindValue) { 3561 const LangStandard &Std = LangStandard::getLangStandardForKind( 3562 static_cast<LangStandard::Kind>(KindValue)); 3563 if (IsInputCompatibleWithStandard(IK, Std)) { 3564 auto Diag = Diags.Report(diag::note_drv_use_standard); 3565 Diag << Std.getName() << Std.getDescription(); 3566 unsigned NumAliases = 0; 3567 #define LANGSTANDARD(id, name, lang, desc, features) 3568 #define LANGSTANDARD_ALIAS(id, alias) \ 3569 if (KindValue == LangStandard::lang_##id) ++NumAliases; 3570 #define LANGSTANDARD_ALIAS_DEPR(id, alias) 3571 #include "clang/Basic/LangStandards.def" 3572 Diag << NumAliases; 3573 #define LANGSTANDARD(id, name, lang, desc, features) 3574 #define LANGSTANDARD_ALIAS(id, alias) \ 3575 if (KindValue == LangStandard::lang_##id) Diag << alias; 3576 #define LANGSTANDARD_ALIAS_DEPR(id, alias) 3577 #include "clang/Basic/LangStandards.def" 3578 } 3579 } 3580 } else { 3581 // Valid standard, check to make sure language and standard are 3582 // compatible. 3583 const LangStandard &Std = LangStandard::getLangStandardForKind(LangStd); 3584 if (!IsInputCompatibleWithStandard(IK, Std)) { 3585 Diags.Report(diag::err_drv_argument_not_allowed_with) 3586 << A->getAsString(Args) << GetInputKindName(IK); 3587 } 3588 } 3589 } 3590 3591 // -cl-std only applies for OpenCL language standards. 3592 // Override the -std option in this case. 3593 if (const Arg *A = Args.getLastArg(OPT_cl_std_EQ)) { 3594 LangStandard::Kind OpenCLLangStd 3595 = llvm::StringSwitch<LangStandard::Kind>(A->getValue()) 3596 .Cases("cl", "CL", LangStandard::lang_opencl10) 3597 .Cases("cl1.0", "CL1.0", LangStandard::lang_opencl10) 3598 .Cases("cl1.1", "CL1.1", LangStandard::lang_opencl11) 3599 .Cases("cl1.2", "CL1.2", LangStandard::lang_opencl12) 3600 .Cases("cl2.0", "CL2.0", LangStandard::lang_opencl20) 3601 .Cases("cl3.0", "CL3.0", LangStandard::lang_opencl30) 3602 .Cases("clc++", "CLC++", LangStandard::lang_openclcpp10) 3603 .Cases("clc++1.0", "CLC++1.0", LangStandard::lang_openclcpp10) 3604 .Cases("clc++2021", "CLC++2021", LangStandard::lang_openclcpp2021) 3605 .Default(LangStandard::lang_unspecified); 3606 3607 if (OpenCLLangStd == LangStandard::lang_unspecified) { 3608 Diags.Report(diag::err_drv_invalid_value) 3609 << A->getAsString(Args) << A->getValue(); 3610 } 3611 else 3612 LangStd = OpenCLLangStd; 3613 } 3614 3615 // These need to be parsed now. They are used to set OpenCL defaults. 3616 Opts.IncludeDefaultHeader = Args.hasArg(OPT_finclude_default_header); 3617 Opts.DeclareOpenCLBuiltins = Args.hasArg(OPT_fdeclare_opencl_builtins); 3618 3619 LangOptions::setLangDefaults(Opts, IK.getLanguage(), T, Includes, LangStd); 3620 3621 // The key paths of codegen options defined in Options.td start with 3622 // "LangOpts->". Let's provide the expected variable name and type. 3623 LangOptions *LangOpts = &Opts; 3624 3625 #define LANG_OPTION_WITH_MARSHALLING(...) \ 3626 PARSE_OPTION_WITH_MARSHALLING(Args, Diags, __VA_ARGS__) 3627 #include "clang/Driver/Options.inc" 3628 #undef LANG_OPTION_WITH_MARSHALLING 3629 3630 if (const Arg *A = Args.getLastArg(OPT_fcf_protection_EQ)) { 3631 StringRef Name = A->getValue(); 3632 if (Name == "full" || Name == "branch") { 3633 Opts.CFProtectionBranch = 1; 3634 } 3635 } 3636 3637 if ((Args.hasArg(OPT_fsycl_is_device) || Args.hasArg(OPT_fsycl_is_host)) && 3638 !Args.hasArg(OPT_sycl_std_EQ)) { 3639 // If the user supplied -fsycl-is-device or -fsycl-is-host, but failed to 3640 // provide -sycl-std=, we want to default it to whatever the default SYCL 3641 // version is. I could not find a way to express this with the options 3642 // tablegen because we still want this value to be SYCL_None when the user 3643 // is not in device or host mode. 3644 Opts.setSYCLVersion(LangOptions::SYCL_Default); 3645 } 3646 3647 if (Opts.ObjC) { 3648 if (Arg *arg = Args.getLastArg(OPT_fobjc_runtime_EQ)) { 3649 StringRef value = arg->getValue(); 3650 if (Opts.ObjCRuntime.tryParse(value)) 3651 Diags.Report(diag::err_drv_unknown_objc_runtime) << value; 3652 } 3653 3654 if (Args.hasArg(OPT_fobjc_gc_only)) 3655 Opts.setGC(LangOptions::GCOnly); 3656 else if (Args.hasArg(OPT_fobjc_gc)) 3657 Opts.setGC(LangOptions::HybridGC); 3658 else if (Args.hasArg(OPT_fobjc_arc)) { 3659 Opts.ObjCAutoRefCount = 1; 3660 if (!Opts.ObjCRuntime.allowsARC()) 3661 Diags.Report(diag::err_arc_unsupported_on_runtime); 3662 } 3663 3664 // ObjCWeakRuntime tracks whether the runtime supports __weak, not 3665 // whether the feature is actually enabled. This is predominantly 3666 // determined by -fobjc-runtime, but we allow it to be overridden 3667 // from the command line for testing purposes. 3668 if (Args.hasArg(OPT_fobjc_runtime_has_weak)) 3669 Opts.ObjCWeakRuntime = 1; 3670 else 3671 Opts.ObjCWeakRuntime = Opts.ObjCRuntime.allowsWeak(); 3672 3673 // ObjCWeak determines whether __weak is actually enabled. 3674 // Note that we allow -fno-objc-weak to disable this even in ARC mode. 3675 if (auto weakArg = Args.getLastArg(OPT_fobjc_weak, OPT_fno_objc_weak)) { 3676 if (!weakArg->getOption().matches(OPT_fobjc_weak)) { 3677 assert(!Opts.ObjCWeak); 3678 } else if (Opts.getGC() != LangOptions::NonGC) { 3679 Diags.Report(diag::err_objc_weak_with_gc); 3680 } else if (!Opts.ObjCWeakRuntime) { 3681 Diags.Report(diag::err_objc_weak_unsupported); 3682 } else { 3683 Opts.ObjCWeak = 1; 3684 } 3685 } else if (Opts.ObjCAutoRefCount) { 3686 Opts.ObjCWeak = Opts.ObjCWeakRuntime; 3687 } 3688 3689 if (Args.hasArg(OPT_fobjc_subscripting_legacy_runtime)) 3690 Opts.ObjCSubscriptingLegacyRuntime = 3691 (Opts.ObjCRuntime.getKind() == ObjCRuntime::FragileMacOSX); 3692 } 3693 3694 if (Arg *A = Args.getLastArg(options::OPT_fgnuc_version_EQ)) { 3695 // Check that the version has 1 to 3 components and the minor and patch 3696 // versions fit in two decimal digits. 3697 VersionTuple GNUCVer; 3698 bool Invalid = GNUCVer.tryParse(A->getValue()); 3699 unsigned Major = GNUCVer.getMajor(); 3700 unsigned Minor = GNUCVer.getMinor().value_or(0); 3701 unsigned Patch = GNUCVer.getSubminor().value_or(0); 3702 if (Invalid || GNUCVer.getBuild() || Minor >= 100 || Patch >= 100) { 3703 Diags.Report(diag::err_drv_invalid_value) 3704 << A->getAsString(Args) << A->getValue(); 3705 } 3706 Opts.GNUCVersion = Major * 100 * 100 + Minor * 100 + Patch; 3707 } 3708 3709 if (T.isOSAIX() && (Args.hasArg(OPT_mignore_xcoff_visibility))) 3710 Opts.IgnoreXCOFFVisibility = 1; 3711 3712 if (Args.hasArg(OPT_ftrapv)) { 3713 Opts.setSignedOverflowBehavior(LangOptions::SOB_Trapping); 3714 // Set the handler, if one is specified. 3715 Opts.OverflowHandler = 3716 std::string(Args.getLastArgValue(OPT_ftrapv_handler)); 3717 } 3718 else if (Args.hasArg(OPT_fwrapv)) 3719 Opts.setSignedOverflowBehavior(LangOptions::SOB_Defined); 3720 3721 Opts.MSCompatibilityVersion = 0; 3722 if (const Arg *A = Args.getLastArg(OPT_fms_compatibility_version)) { 3723 VersionTuple VT; 3724 if (VT.tryParse(A->getValue())) 3725 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) 3726 << A->getValue(); 3727 Opts.MSCompatibilityVersion = VT.getMajor() * 10000000 + 3728 VT.getMinor().value_or(0) * 100000 + 3729 VT.getSubminor().value_or(0); 3730 } 3731 3732 // Mimicking gcc's behavior, trigraphs are only enabled if -trigraphs 3733 // is specified, or -std is set to a conforming mode. 3734 // Trigraphs are disabled by default in c++1z onwards. 3735 // For z/OS, trigraphs are enabled by default (without regard to the above). 3736 Opts.Trigraphs = 3737 (!Opts.GNUMode && !Opts.MSVCCompat && !Opts.CPlusPlus17) || T.isOSzOS(); 3738 Opts.Trigraphs = 3739 Args.hasFlag(OPT_ftrigraphs, OPT_fno_trigraphs, Opts.Trigraphs); 3740 3741 Opts.Blocks = Args.hasArg(OPT_fblocks) || (Opts.OpenCL 3742 && Opts.OpenCLVersion == 200); 3743 3744 Opts.ConvergentFunctions = Args.hasArg(OPT_fconvergent_functions) || 3745 Opts.OpenCL || (Opts.CUDA && Opts.CUDAIsDevice) || 3746 Opts.SYCLIsDevice; 3747 3748 Opts.NoBuiltin = Args.hasArg(OPT_fno_builtin) || Opts.Freestanding; 3749 if (!Opts.NoBuiltin) 3750 getAllNoBuiltinFuncValues(Args, Opts.NoBuiltinFuncs); 3751 if (Arg *A = Args.getLastArg(options::OPT_LongDouble_Group)) { 3752 if (A->getOption().matches(options::OPT_mlong_double_64)) 3753 Opts.LongDoubleSize = 64; 3754 else if (A->getOption().matches(options::OPT_mlong_double_80)) 3755 Opts.LongDoubleSize = 80; 3756 else if (A->getOption().matches(options::OPT_mlong_double_128)) 3757 Opts.LongDoubleSize = 128; 3758 else 3759 Opts.LongDoubleSize = 0; 3760 } 3761 if (Opts.FastRelaxedMath || Opts.CLUnsafeMath) 3762 Opts.setDefaultFPContractMode(LangOptions::FPM_Fast); 3763 3764 llvm::sort(Opts.ModuleFeatures); 3765 3766 // -mrtd option 3767 if (Arg *A = Args.getLastArg(OPT_mrtd)) { 3768 if (Opts.getDefaultCallingConv() != LangOptions::DCC_None) 3769 Diags.Report(diag::err_drv_argument_not_allowed_with) 3770 << A->getSpelling() << "-fdefault-calling-conv"; 3771 else { 3772 if (T.getArch() != llvm::Triple::x86) 3773 Diags.Report(diag::err_drv_argument_not_allowed_with) 3774 << A->getSpelling() << T.getTriple(); 3775 else 3776 Opts.setDefaultCallingConv(LangOptions::DCC_StdCall); 3777 } 3778 } 3779 3780 // Check if -fopenmp is specified and set default version to 5.0. 3781 Opts.OpenMP = Args.hasArg(OPT_fopenmp) ? 50 : 0; 3782 // Check if -fopenmp-simd is specified. 3783 bool IsSimdSpecified = 3784 Args.hasFlag(options::OPT_fopenmp_simd, options::OPT_fno_openmp_simd, 3785 /*Default=*/false); 3786 Opts.OpenMPSimd = !Opts.OpenMP && IsSimdSpecified; 3787 Opts.OpenMPUseTLS = 3788 Opts.OpenMP && !Args.hasArg(options::OPT_fnoopenmp_use_tls); 3789 Opts.OpenMPIsDevice = 3790 Opts.OpenMP && Args.hasArg(options::OPT_fopenmp_is_device); 3791 Opts.OpenMPIRBuilder = 3792 Opts.OpenMP && Args.hasArg(options::OPT_fopenmp_enable_irbuilder); 3793 bool IsTargetSpecified = 3794 Opts.OpenMPIsDevice || Args.hasArg(options::OPT_fopenmp_targets_EQ); 3795 3796 Opts.ConvergentFunctions = Opts.ConvergentFunctions || Opts.OpenMPIsDevice; 3797 3798 if (Opts.OpenMP || Opts.OpenMPSimd) { 3799 if (int Version = getLastArgIntValue( 3800 Args, OPT_fopenmp_version_EQ, 3801 (IsSimdSpecified || IsTargetSpecified) ? 50 : Opts.OpenMP, Diags)) 3802 Opts.OpenMP = Version; 3803 // Provide diagnostic when a given target is not expected to be an OpenMP 3804 // device or host. 3805 if (!Opts.OpenMPIsDevice) { 3806 switch (T.getArch()) { 3807 default: 3808 break; 3809 // Add unsupported host targets here: 3810 case llvm::Triple::nvptx: 3811 case llvm::Triple::nvptx64: 3812 Diags.Report(diag::err_drv_omp_host_target_not_supported) << T.str(); 3813 break; 3814 } 3815 } 3816 } 3817 3818 // Set the flag to prevent the implementation from emitting device exception 3819 // handling code for those requiring so. 3820 if ((Opts.OpenMPIsDevice && (T.isNVPTX() || T.isAMDGCN())) || 3821 Opts.OpenCLCPlusPlus) { 3822 3823 Opts.Exceptions = 0; 3824 Opts.CXXExceptions = 0; 3825 } 3826 if (Opts.OpenMPIsDevice && T.isNVPTX()) { 3827 Opts.OpenMPCUDANumSMs = 3828 getLastArgIntValue(Args, options::OPT_fopenmp_cuda_number_of_sm_EQ, 3829 Opts.OpenMPCUDANumSMs, Diags); 3830 Opts.OpenMPCUDABlocksPerSM = 3831 getLastArgIntValue(Args, options::OPT_fopenmp_cuda_blocks_per_sm_EQ, 3832 Opts.OpenMPCUDABlocksPerSM, Diags); 3833 Opts.OpenMPCUDAReductionBufNum = getLastArgIntValue( 3834 Args, options::OPT_fopenmp_cuda_teams_reduction_recs_num_EQ, 3835 Opts.OpenMPCUDAReductionBufNum, Diags); 3836 } 3837 3838 // Set the value of the debugging flag used in the new offloading device RTL. 3839 // Set either by a specific value or to a default if not specified. 3840 if (Opts.OpenMPIsDevice && (Args.hasArg(OPT_fopenmp_target_debug) || 3841 Args.hasArg(OPT_fopenmp_target_debug_EQ))) { 3842 Opts.OpenMPTargetDebug = getLastArgIntValue( 3843 Args, OPT_fopenmp_target_debug_EQ, Opts.OpenMPTargetDebug, Diags); 3844 if (!Opts.OpenMPTargetDebug && Args.hasArg(OPT_fopenmp_target_debug)) 3845 Opts.OpenMPTargetDebug = 1; 3846 } 3847 3848 if (Opts.OpenMPIsDevice) { 3849 if (Args.hasArg(OPT_fopenmp_assume_teams_oversubscription)) 3850 Opts.OpenMPTeamSubscription = true; 3851 if (Args.hasArg(OPT_fopenmp_assume_threads_oversubscription)) 3852 Opts.OpenMPThreadSubscription = true; 3853 } 3854 3855 // Get the OpenMP target triples if any. 3856 if (Arg *A = Args.getLastArg(options::OPT_fopenmp_targets_EQ)) { 3857 enum ArchPtrSize { Arch16Bit, Arch32Bit, Arch64Bit }; 3858 auto getArchPtrSize = [](const llvm::Triple &T) { 3859 if (T.isArch16Bit()) 3860 return Arch16Bit; 3861 if (T.isArch32Bit()) 3862 return Arch32Bit; 3863 assert(T.isArch64Bit() && "Expected 64-bit architecture"); 3864 return Arch64Bit; 3865 }; 3866 3867 for (unsigned i = 0; i < A->getNumValues(); ++i) { 3868 llvm::Triple TT(A->getValue(i)); 3869 3870 if (TT.getArch() == llvm::Triple::UnknownArch || 3871 !(TT.getArch() == llvm::Triple::aarch64 || TT.isPPC() || 3872 TT.getArch() == llvm::Triple::nvptx || 3873 TT.getArch() == llvm::Triple::nvptx64 || 3874 TT.getArch() == llvm::Triple::amdgcn || 3875 TT.getArch() == llvm::Triple::x86 || 3876 TT.getArch() == llvm::Triple::x86_64)) 3877 Diags.Report(diag::err_drv_invalid_omp_target) << A->getValue(i); 3878 else if (getArchPtrSize(T) != getArchPtrSize(TT)) 3879 Diags.Report(diag::err_drv_incompatible_omp_arch) 3880 << A->getValue(i) << T.str(); 3881 else 3882 Opts.OMPTargetTriples.push_back(TT); 3883 } 3884 } 3885 3886 // Get OpenMP host file path if any and report if a non existent file is 3887 // found 3888 if (Arg *A = Args.getLastArg(options::OPT_fopenmp_host_ir_file_path)) { 3889 Opts.OMPHostIRFile = A->getValue(); 3890 if (!llvm::sys::fs::exists(Opts.OMPHostIRFile)) 3891 Diags.Report(diag::err_drv_omp_host_ir_file_not_found) 3892 << Opts.OMPHostIRFile; 3893 } 3894 3895 // Set CUDA mode for OpenMP target NVPTX/AMDGCN if specified in options 3896 Opts.OpenMPCUDAMode = Opts.OpenMPIsDevice && (T.isNVPTX() || T.isAMDGCN()) && 3897 Args.hasArg(options::OPT_fopenmp_cuda_mode); 3898 3899 // FIXME: Eliminate this dependency. 3900 unsigned Opt = getOptimizationLevel(Args, IK, Diags), 3901 OptSize = getOptimizationLevelSize(Args); 3902 Opts.Optimize = Opt != 0; 3903 Opts.OptimizeSize = OptSize != 0; 3904 3905 // This is the __NO_INLINE__ define, which just depends on things like the 3906 // optimization level and -fno-inline, not actually whether the backend has 3907 // inlining enabled. 3908 Opts.NoInlineDefine = !Opts.Optimize; 3909 if (Arg *InlineArg = Args.getLastArg( 3910 options::OPT_finline_functions, options::OPT_finline_hint_functions, 3911 options::OPT_fno_inline_functions, options::OPT_fno_inline)) 3912 if (InlineArg->getOption().matches(options::OPT_fno_inline)) 3913 Opts.NoInlineDefine = true; 3914 3915 if (Arg *A = Args.getLastArg(OPT_ffp_contract)) { 3916 StringRef Val = A->getValue(); 3917 if (Val == "fast") 3918 Opts.setDefaultFPContractMode(LangOptions::FPM_Fast); 3919 else if (Val == "on") 3920 Opts.setDefaultFPContractMode(LangOptions::FPM_On); 3921 else if (Val == "off") 3922 Opts.setDefaultFPContractMode(LangOptions::FPM_Off); 3923 else if (Val == "fast-honor-pragmas") 3924 Opts.setDefaultFPContractMode(LangOptions::FPM_FastHonorPragmas); 3925 else 3926 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Val; 3927 } 3928 3929 // Parse -fsanitize= arguments. 3930 parseSanitizerKinds("-fsanitize=", Args.getAllArgValues(OPT_fsanitize_EQ), 3931 Diags, Opts.Sanitize); 3932 Opts.NoSanitizeFiles = Args.getAllArgValues(OPT_fsanitize_ignorelist_EQ); 3933 std::vector<std::string> systemIgnorelists = 3934 Args.getAllArgValues(OPT_fsanitize_system_ignorelist_EQ); 3935 Opts.NoSanitizeFiles.insert(Opts.NoSanitizeFiles.end(), 3936 systemIgnorelists.begin(), 3937 systemIgnorelists.end()); 3938 3939 if (Arg *A = Args.getLastArg(OPT_fclang_abi_compat_EQ)) { 3940 Opts.setClangABICompat(LangOptions::ClangABI::Latest); 3941 3942 StringRef Ver = A->getValue(); 3943 std::pair<StringRef, StringRef> VerParts = Ver.split('.'); 3944 unsigned Major, Minor = 0; 3945 3946 // Check the version number is valid: either 3.x (0 <= x <= 9) or 3947 // y or y.0 (4 <= y <= current version). 3948 if (!VerParts.first.startswith("0") && 3949 !VerParts.first.getAsInteger(10, Major) && 3950 3 <= Major && Major <= CLANG_VERSION_MAJOR && 3951 (Major == 3 ? VerParts.second.size() == 1 && 3952 !VerParts.second.getAsInteger(10, Minor) 3953 : VerParts.first.size() == Ver.size() || 3954 VerParts.second == "0")) { 3955 // Got a valid version number. 3956 if (Major == 3 && Minor <= 8) 3957 Opts.setClangABICompat(LangOptions::ClangABI::Ver3_8); 3958 else if (Major <= 4) 3959 Opts.setClangABICompat(LangOptions::ClangABI::Ver4); 3960 else if (Major <= 6) 3961 Opts.setClangABICompat(LangOptions::ClangABI::Ver6); 3962 else if (Major <= 7) 3963 Opts.setClangABICompat(LangOptions::ClangABI::Ver7); 3964 else if (Major <= 9) 3965 Opts.setClangABICompat(LangOptions::ClangABI::Ver9); 3966 else if (Major <= 11) 3967 Opts.setClangABICompat(LangOptions::ClangABI::Ver11); 3968 else if (Major <= 12) 3969 Opts.setClangABICompat(LangOptions::ClangABI::Ver12); 3970 else if (Major <= 14) 3971 Opts.setClangABICompat(LangOptions::ClangABI::Ver14); 3972 else if (Major <= 15) 3973 Opts.setClangABICompat(LangOptions::ClangABI::Ver15); 3974 } else if (Ver != "latest") { 3975 Diags.Report(diag::err_drv_invalid_value) 3976 << A->getAsString(Args) << A->getValue(); 3977 } 3978 } 3979 3980 if (Arg *A = Args.getLastArg(OPT_msign_return_address_EQ)) { 3981 StringRef SignScope = A->getValue(); 3982 3983 if (SignScope.equals_insensitive("none")) 3984 Opts.setSignReturnAddressScope( 3985 LangOptions::SignReturnAddressScopeKind::None); 3986 else if (SignScope.equals_insensitive("all")) 3987 Opts.setSignReturnAddressScope( 3988 LangOptions::SignReturnAddressScopeKind::All); 3989 else if (SignScope.equals_insensitive("non-leaf")) 3990 Opts.setSignReturnAddressScope( 3991 LangOptions::SignReturnAddressScopeKind::NonLeaf); 3992 else 3993 Diags.Report(diag::err_drv_invalid_value) 3994 << A->getAsString(Args) << SignScope; 3995 3996 if (Arg *A = Args.getLastArg(OPT_msign_return_address_key_EQ)) { 3997 StringRef SignKey = A->getValue(); 3998 if (!SignScope.empty() && !SignKey.empty()) { 3999 if (SignKey.equals_insensitive("a_key")) 4000 Opts.setSignReturnAddressKey( 4001 LangOptions::SignReturnAddressKeyKind::AKey); 4002 else if (SignKey.equals_insensitive("b_key")) 4003 Opts.setSignReturnAddressKey( 4004 LangOptions::SignReturnAddressKeyKind::BKey); 4005 else 4006 Diags.Report(diag::err_drv_invalid_value) 4007 << A->getAsString(Args) << SignKey; 4008 } 4009 } 4010 } 4011 4012 // The value can be empty, which indicates the system default should be used. 4013 StringRef CXXABI = Args.getLastArgValue(OPT_fcxx_abi_EQ); 4014 if (!CXXABI.empty()) { 4015 if (!TargetCXXABI::isABI(CXXABI)) { 4016 Diags.Report(diag::err_invalid_cxx_abi) << CXXABI; 4017 } else { 4018 auto Kind = TargetCXXABI::getKind(CXXABI); 4019 if (!TargetCXXABI::isSupportedCXXABI(T, Kind)) 4020 Diags.Report(diag::err_unsupported_cxx_abi) << CXXABI << T.str(); 4021 else 4022 Opts.CXXABI = Kind; 4023 } 4024 } 4025 4026 Opts.RelativeCXXABIVTables = 4027 Args.hasFlag(options::OPT_fexperimental_relative_cxx_abi_vtables, 4028 options::OPT_fno_experimental_relative_cxx_abi_vtables, 4029 TargetCXXABI::usesRelativeVTables(T)); 4030 4031 for (const auto &A : Args.getAllArgValues(OPT_fmacro_prefix_map_EQ)) { 4032 auto Split = StringRef(A).split('='); 4033 Opts.MacroPrefixMap.insert( 4034 {std::string(Split.first), std::string(Split.second)}); 4035 } 4036 4037 Opts.UseTargetPathSeparator = 4038 !Args.getLastArg(OPT_fno_file_reproducible) && 4039 (Args.getLastArg(OPT_ffile_compilation_dir_EQ) || 4040 Args.getLastArg(OPT_fmacro_prefix_map_EQ) || 4041 Args.getLastArg(OPT_ffile_reproducible)); 4042 4043 // Error if -mvscale-min is unbounded. 4044 if (Arg *A = Args.getLastArg(options::OPT_mvscale_min_EQ)) { 4045 unsigned VScaleMin; 4046 if (StringRef(A->getValue()).getAsInteger(10, VScaleMin) || VScaleMin == 0) 4047 Diags.Report(diag::err_cc1_unbounded_vscale_min); 4048 } 4049 4050 if (const Arg *A = Args.getLastArg(OPT_frandomize_layout_seed_file_EQ)) { 4051 std::ifstream SeedFile(A->getValue(0)); 4052 4053 if (!SeedFile.is_open()) 4054 Diags.Report(diag::err_drv_cannot_open_randomize_layout_seed_file) 4055 << A->getValue(0); 4056 4057 std::getline(SeedFile, Opts.RandstructSeed); 4058 } 4059 4060 if (const Arg *A = Args.getLastArg(OPT_frandomize_layout_seed_EQ)) 4061 Opts.RandstructSeed = A->getValue(0); 4062 4063 // Validate options for HLSL 4064 if (Opts.HLSL) { 4065 bool SupportedTarget = T.getArch() == llvm::Triple::dxil && 4066 T.getOS() == llvm::Triple::ShaderModel; 4067 if (!SupportedTarget) 4068 Diags.Report(diag::err_drv_hlsl_unsupported_target) << T.str(); 4069 } 4070 4071 return Diags.getNumErrors() == NumErrorsBefore; 4072 } 4073 4074 static bool isStrictlyPreprocessorAction(frontend::ActionKind Action) { 4075 switch (Action) { 4076 case frontend::ASTDeclList: 4077 case frontend::ASTDump: 4078 case frontend::ASTPrint: 4079 case frontend::ASTView: 4080 case frontend::EmitAssembly: 4081 case frontend::EmitBC: 4082 case frontend::EmitHTML: 4083 case frontend::EmitLLVM: 4084 case frontend::EmitLLVMOnly: 4085 case frontend::EmitCodeGenOnly: 4086 case frontend::EmitObj: 4087 case frontend::ExtractAPI: 4088 case frontend::FixIt: 4089 case frontend::GenerateModule: 4090 case frontend::GenerateModuleInterface: 4091 case frontend::GenerateHeaderUnit: 4092 case frontend::GeneratePCH: 4093 case frontend::GenerateInterfaceStubs: 4094 case frontend::ParseSyntaxOnly: 4095 case frontend::ModuleFileInfo: 4096 case frontend::VerifyPCH: 4097 case frontend::PluginAction: 4098 case frontend::RewriteObjC: 4099 case frontend::RewriteTest: 4100 case frontend::RunAnalysis: 4101 case frontend::TemplightDump: 4102 case frontend::MigrateSource: 4103 return false; 4104 4105 case frontend::DumpCompilerOptions: 4106 case frontend::DumpRawTokens: 4107 case frontend::DumpTokens: 4108 case frontend::InitOnly: 4109 case frontend::PrintPreamble: 4110 case frontend::PrintPreprocessedInput: 4111 case frontend::RewriteMacros: 4112 case frontend::RunPreprocessorOnly: 4113 case frontend::PrintDependencyDirectivesSourceMinimizerOutput: 4114 return true; 4115 } 4116 llvm_unreachable("invalid frontend action"); 4117 } 4118 4119 static void GeneratePreprocessorArgs(PreprocessorOptions &Opts, 4120 SmallVectorImpl<const char *> &Args, 4121 CompilerInvocation::StringAllocator SA, 4122 const LangOptions &LangOpts, 4123 const FrontendOptions &FrontendOpts, 4124 const CodeGenOptions &CodeGenOpts) { 4125 PreprocessorOptions *PreprocessorOpts = &Opts; 4126 4127 #define PREPROCESSOR_OPTION_WITH_MARSHALLING(...) \ 4128 GENERATE_OPTION_WITH_MARSHALLING(Args, SA, __VA_ARGS__) 4129 #include "clang/Driver/Options.inc" 4130 #undef PREPROCESSOR_OPTION_WITH_MARSHALLING 4131 4132 if (Opts.PCHWithHdrStop && !Opts.PCHWithHdrStopCreate) 4133 GenerateArg(Args, OPT_pch_through_hdrstop_use, SA); 4134 4135 for (const auto &D : Opts.DeserializedPCHDeclsToErrorOn) 4136 GenerateArg(Args, OPT_error_on_deserialized_pch_decl, D, SA); 4137 4138 if (Opts.PrecompiledPreambleBytes != std::make_pair(0u, false)) 4139 GenerateArg(Args, OPT_preamble_bytes_EQ, 4140 Twine(Opts.PrecompiledPreambleBytes.first) + "," + 4141 (Opts.PrecompiledPreambleBytes.second ? "1" : "0"), 4142 SA); 4143 4144 for (const auto &M : Opts.Macros) { 4145 // Don't generate __CET__ macro definitions. They are implied by the 4146 // -fcf-protection option that is generated elsewhere. 4147 if (M.first == "__CET__=1" && !M.second && 4148 !CodeGenOpts.CFProtectionReturn && CodeGenOpts.CFProtectionBranch) 4149 continue; 4150 if (M.first == "__CET__=2" && !M.second && CodeGenOpts.CFProtectionReturn && 4151 !CodeGenOpts.CFProtectionBranch) 4152 continue; 4153 if (M.first == "__CET__=3" && !M.second && CodeGenOpts.CFProtectionReturn && 4154 CodeGenOpts.CFProtectionBranch) 4155 continue; 4156 4157 GenerateArg(Args, M.second ? OPT_U : OPT_D, M.first, SA); 4158 } 4159 4160 for (const auto &I : Opts.Includes) { 4161 // Don't generate OpenCL includes. They are implied by other flags that are 4162 // generated elsewhere. 4163 if (LangOpts.OpenCL && LangOpts.IncludeDefaultHeader && 4164 ((LangOpts.DeclareOpenCLBuiltins && I == "opencl-c-base.h") || 4165 I == "opencl-c.h")) 4166 continue; 4167 // Don't generate HLSL includes. They are implied by other flags that are 4168 // generated elsewhere. 4169 if (LangOpts.HLSL && I == "hlsl.h") 4170 continue; 4171 4172 GenerateArg(Args, OPT_include, I, SA); 4173 } 4174 4175 for (const auto &CI : Opts.ChainedIncludes) 4176 GenerateArg(Args, OPT_chain_include, CI, SA); 4177 4178 for (const auto &RF : Opts.RemappedFiles) 4179 GenerateArg(Args, OPT_remap_file, RF.first + ";" + RF.second, SA); 4180 4181 if (Opts.SourceDateEpoch) 4182 GenerateArg(Args, OPT_source_date_epoch, Twine(*Opts.SourceDateEpoch), SA); 4183 4184 // Don't handle LexEditorPlaceholders. It is implied by the action that is 4185 // generated elsewhere. 4186 } 4187 4188 static bool ParsePreprocessorArgs(PreprocessorOptions &Opts, ArgList &Args, 4189 DiagnosticsEngine &Diags, 4190 frontend::ActionKind Action, 4191 const FrontendOptions &FrontendOpts) { 4192 unsigned NumErrorsBefore = Diags.getNumErrors(); 4193 4194 PreprocessorOptions *PreprocessorOpts = &Opts; 4195 4196 #define PREPROCESSOR_OPTION_WITH_MARSHALLING(...) \ 4197 PARSE_OPTION_WITH_MARSHALLING(Args, Diags, __VA_ARGS__) 4198 #include "clang/Driver/Options.inc" 4199 #undef PREPROCESSOR_OPTION_WITH_MARSHALLING 4200 4201 Opts.PCHWithHdrStop = Args.hasArg(OPT_pch_through_hdrstop_create) || 4202 Args.hasArg(OPT_pch_through_hdrstop_use); 4203 4204 for (const auto *A : Args.filtered(OPT_error_on_deserialized_pch_decl)) 4205 Opts.DeserializedPCHDeclsToErrorOn.insert(A->getValue()); 4206 4207 if (const Arg *A = Args.getLastArg(OPT_preamble_bytes_EQ)) { 4208 StringRef Value(A->getValue()); 4209 size_t Comma = Value.find(','); 4210 unsigned Bytes = 0; 4211 unsigned EndOfLine = 0; 4212 4213 if (Comma == StringRef::npos || 4214 Value.substr(0, Comma).getAsInteger(10, Bytes) || 4215 Value.substr(Comma + 1).getAsInteger(10, EndOfLine)) 4216 Diags.Report(diag::err_drv_preamble_format); 4217 else { 4218 Opts.PrecompiledPreambleBytes.first = Bytes; 4219 Opts.PrecompiledPreambleBytes.second = (EndOfLine != 0); 4220 } 4221 } 4222 4223 // Add the __CET__ macro if a CFProtection option is set. 4224 if (const Arg *A = Args.getLastArg(OPT_fcf_protection_EQ)) { 4225 StringRef Name = A->getValue(); 4226 if (Name == "branch") 4227 Opts.addMacroDef("__CET__=1"); 4228 else if (Name == "return") 4229 Opts.addMacroDef("__CET__=2"); 4230 else if (Name == "full") 4231 Opts.addMacroDef("__CET__=3"); 4232 } 4233 4234 // Add macros from the command line. 4235 for (const auto *A : Args.filtered(OPT_D, OPT_U)) { 4236 if (A->getOption().matches(OPT_D)) 4237 Opts.addMacroDef(A->getValue()); 4238 else 4239 Opts.addMacroUndef(A->getValue()); 4240 } 4241 4242 // Add the ordered list of -includes. 4243 for (const auto *A : Args.filtered(OPT_include)) 4244 Opts.Includes.emplace_back(A->getValue()); 4245 4246 for (const auto *A : Args.filtered(OPT_chain_include)) 4247 Opts.ChainedIncludes.emplace_back(A->getValue()); 4248 4249 for (const auto *A : Args.filtered(OPT_remap_file)) { 4250 std::pair<StringRef, StringRef> Split = StringRef(A->getValue()).split(';'); 4251 4252 if (Split.second.empty()) { 4253 Diags.Report(diag::err_drv_invalid_remap_file) << A->getAsString(Args); 4254 continue; 4255 } 4256 4257 Opts.addRemappedFile(Split.first, Split.second); 4258 } 4259 4260 if (const Arg *A = Args.getLastArg(OPT_source_date_epoch)) { 4261 StringRef Epoch = A->getValue(); 4262 // SOURCE_DATE_EPOCH, if specified, must be a non-negative decimal integer. 4263 // On time64 systems, pick 253402300799 (the UNIX timestamp of 4264 // 9999-12-31T23:59:59Z) as the upper bound. 4265 const uint64_t MaxTimestamp = 4266 std::min<uint64_t>(std::numeric_limits<time_t>::max(), 253402300799); 4267 uint64_t V; 4268 if (Epoch.getAsInteger(10, V) || V > MaxTimestamp) { 4269 Diags.Report(diag::err_fe_invalid_source_date_epoch) 4270 << Epoch << MaxTimestamp; 4271 } else { 4272 Opts.SourceDateEpoch = V; 4273 } 4274 } 4275 4276 // Always avoid lexing editor placeholders when we're just running the 4277 // preprocessor as we never want to emit the 4278 // "editor placeholder in source file" error in PP only mode. 4279 if (isStrictlyPreprocessorAction(Action)) 4280 Opts.LexEditorPlaceholders = false; 4281 4282 return Diags.getNumErrors() == NumErrorsBefore; 4283 } 4284 4285 static void GeneratePreprocessorOutputArgs( 4286 const PreprocessorOutputOptions &Opts, SmallVectorImpl<const char *> &Args, 4287 CompilerInvocation::StringAllocator SA, frontend::ActionKind Action) { 4288 const PreprocessorOutputOptions &PreprocessorOutputOpts = Opts; 4289 4290 #define PREPROCESSOR_OUTPUT_OPTION_WITH_MARSHALLING(...) \ 4291 GENERATE_OPTION_WITH_MARSHALLING(Args, SA, __VA_ARGS__) 4292 #include "clang/Driver/Options.inc" 4293 #undef PREPROCESSOR_OUTPUT_OPTION_WITH_MARSHALLING 4294 4295 bool Generate_dM = isStrictlyPreprocessorAction(Action) && !Opts.ShowCPP; 4296 if (Generate_dM) 4297 GenerateArg(Args, OPT_dM, SA); 4298 if (!Generate_dM && Opts.ShowMacros) 4299 GenerateArg(Args, OPT_dD, SA); 4300 if (Opts.DirectivesOnly) 4301 GenerateArg(Args, OPT_fdirectives_only, SA); 4302 } 4303 4304 static bool ParsePreprocessorOutputArgs(PreprocessorOutputOptions &Opts, 4305 ArgList &Args, DiagnosticsEngine &Diags, 4306 frontend::ActionKind Action) { 4307 unsigned NumErrorsBefore = Diags.getNumErrors(); 4308 4309 PreprocessorOutputOptions &PreprocessorOutputOpts = Opts; 4310 4311 #define PREPROCESSOR_OUTPUT_OPTION_WITH_MARSHALLING(...) \ 4312 PARSE_OPTION_WITH_MARSHALLING(Args, Diags, __VA_ARGS__) 4313 #include "clang/Driver/Options.inc" 4314 #undef PREPROCESSOR_OUTPUT_OPTION_WITH_MARSHALLING 4315 4316 Opts.ShowCPP = isStrictlyPreprocessorAction(Action) && !Args.hasArg(OPT_dM); 4317 Opts.ShowMacros = Args.hasArg(OPT_dM) || Args.hasArg(OPT_dD); 4318 Opts.DirectivesOnly = Args.hasArg(OPT_fdirectives_only); 4319 4320 return Diags.getNumErrors() == NumErrorsBefore; 4321 } 4322 4323 static void GenerateTargetArgs(const TargetOptions &Opts, 4324 SmallVectorImpl<const char *> &Args, 4325 CompilerInvocation::StringAllocator SA) { 4326 const TargetOptions *TargetOpts = &Opts; 4327 #define TARGET_OPTION_WITH_MARSHALLING(...) \ 4328 GENERATE_OPTION_WITH_MARSHALLING(Args, SA, __VA_ARGS__) 4329 #include "clang/Driver/Options.inc" 4330 #undef TARGET_OPTION_WITH_MARSHALLING 4331 4332 if (!Opts.SDKVersion.empty()) 4333 GenerateArg(Args, OPT_target_sdk_version_EQ, Opts.SDKVersion.getAsString(), 4334 SA); 4335 if (!Opts.DarwinTargetVariantSDKVersion.empty()) 4336 GenerateArg(Args, OPT_darwin_target_variant_sdk_version_EQ, 4337 Opts.DarwinTargetVariantSDKVersion.getAsString(), SA); 4338 } 4339 4340 static bool ParseTargetArgs(TargetOptions &Opts, ArgList &Args, 4341 DiagnosticsEngine &Diags) { 4342 unsigned NumErrorsBefore = Diags.getNumErrors(); 4343 4344 TargetOptions *TargetOpts = &Opts; 4345 4346 #define TARGET_OPTION_WITH_MARSHALLING(...) \ 4347 PARSE_OPTION_WITH_MARSHALLING(Args, Diags, __VA_ARGS__) 4348 #include "clang/Driver/Options.inc" 4349 #undef TARGET_OPTION_WITH_MARSHALLING 4350 4351 if (Arg *A = Args.getLastArg(options::OPT_target_sdk_version_EQ)) { 4352 llvm::VersionTuple Version; 4353 if (Version.tryParse(A->getValue())) 4354 Diags.Report(diag::err_drv_invalid_value) 4355 << A->getAsString(Args) << A->getValue(); 4356 else 4357 Opts.SDKVersion = Version; 4358 } 4359 if (Arg *A = 4360 Args.getLastArg(options::OPT_darwin_target_variant_sdk_version_EQ)) { 4361 llvm::VersionTuple Version; 4362 if (Version.tryParse(A->getValue())) 4363 Diags.Report(diag::err_drv_invalid_value) 4364 << A->getAsString(Args) << A->getValue(); 4365 else 4366 Opts.DarwinTargetVariantSDKVersion = Version; 4367 } 4368 4369 return Diags.getNumErrors() == NumErrorsBefore; 4370 } 4371 4372 bool CompilerInvocation::CreateFromArgsImpl( 4373 CompilerInvocation &Res, ArrayRef<const char *> CommandLineArgs, 4374 DiagnosticsEngine &Diags, const char *Argv0) { 4375 unsigned NumErrorsBefore = Diags.getNumErrors(); 4376 4377 // Parse the arguments. 4378 const OptTable &Opts = getDriverOptTable(); 4379 const unsigned IncludedFlagsBitmask = options::CC1Option; 4380 unsigned MissingArgIndex, MissingArgCount; 4381 InputArgList Args = Opts.ParseArgs(CommandLineArgs, MissingArgIndex, 4382 MissingArgCount, IncludedFlagsBitmask); 4383 LangOptions &LangOpts = *Res.getLangOpts(); 4384 4385 // Check for missing argument error. 4386 if (MissingArgCount) 4387 Diags.Report(diag::err_drv_missing_argument) 4388 << Args.getArgString(MissingArgIndex) << MissingArgCount; 4389 4390 // Issue errors on unknown arguments. 4391 for (const auto *A : Args.filtered(OPT_UNKNOWN)) { 4392 auto ArgString = A->getAsString(Args); 4393 std::string Nearest; 4394 if (Opts.findNearest(ArgString, Nearest, IncludedFlagsBitmask) > 1) 4395 Diags.Report(diag::err_drv_unknown_argument) << ArgString; 4396 else 4397 Diags.Report(diag::err_drv_unknown_argument_with_suggestion) 4398 << ArgString << Nearest; 4399 } 4400 4401 ParseFileSystemArgs(Res.getFileSystemOpts(), Args, Diags); 4402 ParseMigratorArgs(Res.getMigratorOpts(), Args, Diags); 4403 ParseAnalyzerArgs(*Res.getAnalyzerOpts(), Args, Diags); 4404 ParseDiagnosticArgs(Res.getDiagnosticOpts(), Args, &Diags, 4405 /*DefaultDiagColor=*/false); 4406 ParseFrontendArgs(Res.getFrontendOpts(), Args, Diags, LangOpts.IsHeaderFile); 4407 // FIXME: We shouldn't have to pass the DashX option around here 4408 InputKind DashX = Res.getFrontendOpts().DashX; 4409 ParseTargetArgs(Res.getTargetOpts(), Args, Diags); 4410 llvm::Triple T(Res.getTargetOpts().Triple); 4411 ParseHeaderSearchArgs(Res.getHeaderSearchOpts(), Args, Diags, 4412 Res.getFileSystemOpts().WorkingDir); 4413 4414 ParseLangArgs(LangOpts, Args, DashX, T, Res.getPreprocessorOpts().Includes, 4415 Diags); 4416 if (Res.getFrontendOpts().ProgramAction == frontend::RewriteObjC) 4417 LangOpts.ObjCExceptions = 1; 4418 4419 for (auto Warning : Res.getDiagnosticOpts().Warnings) { 4420 if (Warning == "misexpect" && 4421 !Diags.isIgnored(diag::warn_profile_data_misexpect, SourceLocation())) { 4422 Res.getCodeGenOpts().MisExpect = true; 4423 } 4424 } 4425 4426 if (LangOpts.CUDA) { 4427 // During CUDA device-side compilation, the aux triple is the 4428 // triple used for host compilation. 4429 if (LangOpts.CUDAIsDevice) 4430 Res.getTargetOpts().HostTriple = Res.getFrontendOpts().AuxTriple; 4431 } 4432 4433 // Set the triple of the host for OpenMP device compile. 4434 if (LangOpts.OpenMPIsDevice) 4435 Res.getTargetOpts().HostTriple = Res.getFrontendOpts().AuxTriple; 4436 4437 ParseCodeGenArgs(Res.getCodeGenOpts(), Args, DashX, Diags, T, 4438 Res.getFrontendOpts().OutputFile, LangOpts); 4439 4440 // FIXME: Override value name discarding when asan or msan is used because the 4441 // backend passes depend on the name of the alloca in order to print out 4442 // names. 4443 Res.getCodeGenOpts().DiscardValueNames &= 4444 !LangOpts.Sanitize.has(SanitizerKind::Address) && 4445 !LangOpts.Sanitize.has(SanitizerKind::KernelAddress) && 4446 !LangOpts.Sanitize.has(SanitizerKind::Memory) && 4447 !LangOpts.Sanitize.has(SanitizerKind::KernelMemory); 4448 4449 ParsePreprocessorArgs(Res.getPreprocessorOpts(), Args, Diags, 4450 Res.getFrontendOpts().ProgramAction, 4451 Res.getFrontendOpts()); 4452 ParsePreprocessorOutputArgs(Res.getPreprocessorOutputOpts(), Args, Diags, 4453 Res.getFrontendOpts().ProgramAction); 4454 4455 ParseDependencyOutputArgs(Res.getDependencyOutputOpts(), Args, Diags, 4456 Res.getFrontendOpts().ProgramAction, 4457 Res.getPreprocessorOutputOpts().ShowLineMarkers); 4458 if (!Res.getDependencyOutputOpts().OutputFile.empty() && 4459 Res.getDependencyOutputOpts().Targets.empty()) 4460 Diags.Report(diag::err_fe_dependency_file_requires_MT); 4461 4462 // If sanitizer is enabled, disable OPT_ffine_grained_bitfield_accesses. 4463 if (Res.getCodeGenOpts().FineGrainedBitfieldAccesses && 4464 !Res.getLangOpts()->Sanitize.empty()) { 4465 Res.getCodeGenOpts().FineGrainedBitfieldAccesses = false; 4466 Diags.Report(diag::warn_drv_fine_grained_bitfield_accesses_ignored); 4467 } 4468 4469 // Store the command-line for using in the CodeView backend. 4470 if (Res.getCodeGenOpts().CodeViewCommandLine) { 4471 Res.getCodeGenOpts().Argv0 = Argv0; 4472 append_range(Res.getCodeGenOpts().CommandLineArgs, CommandLineArgs); 4473 } 4474 4475 // Set PGOOptions. Need to create a temporary VFS to read the profile 4476 // to determine the PGO type. 4477 if (!Res.getCodeGenOpts().ProfileInstrumentUsePath.empty()) { 4478 auto FS = 4479 createVFSFromOverlayFiles(Res.getHeaderSearchOpts().VFSOverlayFiles, 4480 Diags, llvm::vfs::getRealFileSystem()); 4481 setPGOUseInstrumentor(Res.getCodeGenOpts(), 4482 Res.getCodeGenOpts().ProfileInstrumentUsePath, *FS, 4483 Diags); 4484 } 4485 4486 FixupInvocation(Res, Diags, Args, DashX); 4487 4488 return Diags.getNumErrors() == NumErrorsBefore; 4489 } 4490 4491 bool CompilerInvocation::CreateFromArgs(CompilerInvocation &Invocation, 4492 ArrayRef<const char *> CommandLineArgs, 4493 DiagnosticsEngine &Diags, 4494 const char *Argv0) { 4495 CompilerInvocation DummyInvocation; 4496 4497 return RoundTrip( 4498 [](CompilerInvocation &Invocation, ArrayRef<const char *> CommandLineArgs, 4499 DiagnosticsEngine &Diags, const char *Argv0) { 4500 return CreateFromArgsImpl(Invocation, CommandLineArgs, Diags, Argv0); 4501 }, 4502 [](CompilerInvocation &Invocation, SmallVectorImpl<const char *> &Args, 4503 StringAllocator SA) { 4504 Args.push_back("-cc1"); 4505 Invocation.generateCC1CommandLine(Args, SA); 4506 }, 4507 Invocation, DummyInvocation, CommandLineArgs, Diags, Argv0); 4508 } 4509 4510 std::string CompilerInvocation::getModuleHash() const { 4511 // FIXME: Consider using SHA1 instead of MD5. 4512 llvm::HashBuilder<llvm::MD5, llvm::support::endianness::native> HBuilder; 4513 4514 // Note: For QoI reasons, the things we use as a hash here should all be 4515 // dumped via the -module-info flag. 4516 4517 // Start the signature with the compiler version. 4518 HBuilder.add(getClangFullRepositoryVersion()); 4519 4520 // Also include the serialization version, in case LLVM_APPEND_VC_REV is off 4521 // and getClangFullRepositoryVersion() doesn't include git revision. 4522 HBuilder.add(serialization::VERSION_MAJOR, serialization::VERSION_MINOR); 4523 4524 // Extend the signature with the language options 4525 #define LANGOPT(Name, Bits, Default, Description) HBuilder.add(LangOpts->Name); 4526 #define ENUM_LANGOPT(Name, Type, Bits, Default, Description) \ 4527 HBuilder.add(static_cast<unsigned>(LangOpts->get##Name())); 4528 #define BENIGN_LANGOPT(Name, Bits, Default, Description) 4529 #define BENIGN_ENUM_LANGOPT(Name, Type, Bits, Default, Description) 4530 #include "clang/Basic/LangOptions.def" 4531 4532 HBuilder.addRange(LangOpts->ModuleFeatures); 4533 4534 HBuilder.add(LangOpts->ObjCRuntime); 4535 HBuilder.addRange(LangOpts->CommentOpts.BlockCommandNames); 4536 4537 // Extend the signature with the target options. 4538 HBuilder.add(TargetOpts->Triple, TargetOpts->CPU, TargetOpts->TuneCPU, 4539 TargetOpts->ABI); 4540 HBuilder.addRange(TargetOpts->FeaturesAsWritten); 4541 4542 // Extend the signature with preprocessor options. 4543 const PreprocessorOptions &ppOpts = getPreprocessorOpts(); 4544 HBuilder.add(ppOpts.UsePredefines, ppOpts.DetailedRecord); 4545 4546 const HeaderSearchOptions &hsOpts = getHeaderSearchOpts(); 4547 for (const auto &Macro : getPreprocessorOpts().Macros) { 4548 // If we're supposed to ignore this macro for the purposes of modules, 4549 // don't put it into the hash. 4550 if (!hsOpts.ModulesIgnoreMacros.empty()) { 4551 // Check whether we're ignoring this macro. 4552 StringRef MacroDef = Macro.first; 4553 if (hsOpts.ModulesIgnoreMacros.count( 4554 llvm::CachedHashString(MacroDef.split('=').first))) 4555 continue; 4556 } 4557 4558 HBuilder.add(Macro); 4559 } 4560 4561 // Extend the signature with the sysroot and other header search options. 4562 HBuilder.add(hsOpts.Sysroot, hsOpts.ModuleFormat, hsOpts.UseDebugInfo, 4563 hsOpts.UseBuiltinIncludes, hsOpts.UseStandardSystemIncludes, 4564 hsOpts.UseStandardCXXIncludes, hsOpts.UseLibcxx, 4565 hsOpts.ModulesValidateDiagnosticOptions); 4566 HBuilder.add(hsOpts.ResourceDir); 4567 4568 if (hsOpts.ModulesStrictContextHash) { 4569 HBuilder.addRange(hsOpts.SystemHeaderPrefixes); 4570 HBuilder.addRange(hsOpts.UserEntries); 4571 4572 const DiagnosticOptions &diagOpts = getDiagnosticOpts(); 4573 #define DIAGOPT(Name, Bits, Default) HBuilder.add(diagOpts.Name); 4574 #define ENUM_DIAGOPT(Name, Type, Bits, Default) \ 4575 HBuilder.add(diagOpts.get##Name()); 4576 #include "clang/Basic/DiagnosticOptions.def" 4577 #undef DIAGOPT 4578 #undef ENUM_DIAGOPT 4579 } 4580 4581 // Extend the signature with the user build path. 4582 HBuilder.add(hsOpts.ModuleUserBuildPath); 4583 4584 // Extend the signature with the module file extensions. 4585 for (const auto &ext : getFrontendOpts().ModuleFileExtensions) 4586 ext->hashExtension(HBuilder); 4587 4588 // When compiling with -gmodules, also hash -fdebug-prefix-map as it 4589 // affects the debug info in the PCM. 4590 if (getCodeGenOpts().DebugTypeExtRefs) 4591 HBuilder.addRange(getCodeGenOpts().DebugPrefixMap); 4592 4593 // Extend the signature with the enabled sanitizers, if at least one is 4594 // enabled. Sanitizers which cannot affect AST generation aren't hashed. 4595 SanitizerSet SanHash = LangOpts->Sanitize; 4596 SanHash.clear(getPPTransparentSanitizers()); 4597 if (!SanHash.empty()) 4598 HBuilder.add(SanHash.Mask); 4599 4600 llvm::MD5::MD5Result Result; 4601 HBuilder.getHasher().final(Result); 4602 uint64_t Hash = Result.high() ^ Result.low(); 4603 return toString(llvm::APInt(64, Hash), 36, /*Signed=*/false); 4604 } 4605 4606 void CompilerInvocation::generateCC1CommandLine( 4607 SmallVectorImpl<const char *> &Args, StringAllocator SA) const { 4608 llvm::Triple T(TargetOpts->Triple); 4609 4610 GenerateFileSystemArgs(FileSystemOpts, Args, SA); 4611 GenerateMigratorArgs(MigratorOpts, Args, SA); 4612 GenerateAnalyzerArgs(*AnalyzerOpts, Args, SA); 4613 GenerateDiagnosticArgs(*DiagnosticOpts, Args, SA, false); 4614 GenerateFrontendArgs(FrontendOpts, Args, SA, LangOpts->IsHeaderFile); 4615 GenerateTargetArgs(*TargetOpts, Args, SA); 4616 GenerateHeaderSearchArgs(*HeaderSearchOpts, Args, SA); 4617 GenerateLangArgs(*LangOpts, Args, SA, T, FrontendOpts.DashX); 4618 GenerateCodeGenArgs(CodeGenOpts, Args, SA, T, FrontendOpts.OutputFile, 4619 &*LangOpts); 4620 GeneratePreprocessorArgs(*PreprocessorOpts, Args, SA, *LangOpts, FrontendOpts, 4621 CodeGenOpts); 4622 GeneratePreprocessorOutputArgs(PreprocessorOutputOpts, Args, SA, 4623 FrontendOpts.ProgramAction); 4624 GenerateDependencyOutputArgs(DependencyOutputOpts, Args, SA); 4625 } 4626 4627 std::vector<std::string> CompilerInvocation::getCC1CommandLine() const { 4628 // Set up string allocator. 4629 llvm::BumpPtrAllocator Alloc; 4630 llvm::StringSaver Strings(Alloc); 4631 auto SA = [&Strings](const Twine &Arg) { return Strings.save(Arg).data(); }; 4632 4633 // Synthesize full command line from the CompilerInvocation, including "-cc1". 4634 SmallVector<const char *, 32> Args{"-cc1"}; 4635 generateCC1CommandLine(Args, SA); 4636 4637 // Convert arguments to the return type. 4638 return std::vector<std::string>{Args.begin(), Args.end()}; 4639 } 4640 4641 void CompilerInvocation::resetNonModularOptions() { 4642 getLangOpts()->resetNonModularOptions(); 4643 getPreprocessorOpts().resetNonModularOptions(); 4644 } 4645 4646 void CompilerInvocation::clearImplicitModuleBuildOptions() { 4647 getLangOpts()->ImplicitModules = false; 4648 getHeaderSearchOpts().ImplicitModuleMaps = false; 4649 getHeaderSearchOpts().ModuleCachePath.clear(); 4650 getHeaderSearchOpts().ModulesValidateOncePerBuildSession = false; 4651 getHeaderSearchOpts().BuildSessionTimestamp = 0; 4652 // The specific values we canonicalize to for pruning don't affect behaviour, 4653 /// so use the default values so they may be dropped from the command-line. 4654 getHeaderSearchOpts().ModuleCachePruneInterval = 7 * 24 * 60 * 60; 4655 getHeaderSearchOpts().ModuleCachePruneAfter = 31 * 24 * 60 * 60; 4656 } 4657 4658 IntrusiveRefCntPtr<llvm::vfs::FileSystem> 4659 clang::createVFSFromCompilerInvocation(const CompilerInvocation &CI, 4660 DiagnosticsEngine &Diags) { 4661 return createVFSFromCompilerInvocation(CI, Diags, 4662 llvm::vfs::getRealFileSystem()); 4663 } 4664 4665 IntrusiveRefCntPtr<llvm::vfs::FileSystem> 4666 clang::createVFSFromCompilerInvocation( 4667 const CompilerInvocation &CI, DiagnosticsEngine &Diags, 4668 IntrusiveRefCntPtr<llvm::vfs::FileSystem> BaseFS) { 4669 return createVFSFromOverlayFiles(CI.getHeaderSearchOpts().VFSOverlayFiles, 4670 Diags, std::move(BaseFS)); 4671 } 4672 4673 IntrusiveRefCntPtr<llvm::vfs::FileSystem> clang::createVFSFromOverlayFiles( 4674 ArrayRef<std::string> VFSOverlayFiles, DiagnosticsEngine &Diags, 4675 IntrusiveRefCntPtr<llvm::vfs::FileSystem> BaseFS) { 4676 if (VFSOverlayFiles.empty()) 4677 return BaseFS; 4678 4679 IntrusiveRefCntPtr<llvm::vfs::FileSystem> Result = BaseFS; 4680 // earlier vfs files are on the bottom 4681 for (const auto &File : VFSOverlayFiles) { 4682 llvm::ErrorOr<std::unique_ptr<llvm::MemoryBuffer>> Buffer = 4683 Result->getBufferForFile(File); 4684 if (!Buffer) { 4685 Diags.Report(diag::err_missing_vfs_overlay_file) << File; 4686 continue; 4687 } 4688 4689 IntrusiveRefCntPtr<llvm::vfs::FileSystem> FS = llvm::vfs::getVFSFromYAML( 4690 std::move(Buffer.get()), /*DiagHandler*/ nullptr, File, 4691 /*DiagContext*/ nullptr, Result); 4692 if (!FS) { 4693 Diags.Report(diag::err_invalid_vfs_overlay) << File; 4694 continue; 4695 } 4696 4697 Result = FS; 4698 } 4699 return Result; 4700 } 4701