1 //===- CompilerInvocation.cpp ---------------------------------------------===// 2 // 3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 4 // See https://llvm.org/LICENSE.txt for license information. 5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 6 // 7 //===----------------------------------------------------------------------===// 8 9 #include "clang/Frontend/CompilerInvocation.h" 10 #include "TestModuleFileExtension.h" 11 #include "clang/Basic/Builtins.h" 12 #include "clang/Basic/CharInfo.h" 13 #include "clang/Basic/CodeGenOptions.h" 14 #include "clang/Basic/CommentOptions.h" 15 #include "clang/Basic/DebugInfoOptions.h" 16 #include "clang/Basic/Diagnostic.h" 17 #include "clang/Basic/DiagnosticDriver.h" 18 #include "clang/Basic/DiagnosticOptions.h" 19 #include "clang/Basic/FileSystemOptions.h" 20 #include "clang/Basic/LLVM.h" 21 #include "clang/Basic/LangOptions.h" 22 #include "clang/Basic/LangStandard.h" 23 #include "clang/Basic/ObjCRuntime.h" 24 #include "clang/Basic/Sanitizers.h" 25 #include "clang/Basic/SourceLocation.h" 26 #include "clang/Basic/TargetOptions.h" 27 #include "clang/Basic/Version.h" 28 #include "clang/Basic/Visibility.h" 29 #include "clang/Basic/XRayInstr.h" 30 #include "clang/Config/config.h" 31 #include "clang/Driver/Driver.h" 32 #include "clang/Driver/DriverDiagnostic.h" 33 #include "clang/Driver/Options.h" 34 #include "clang/Frontend/CommandLineSourceLoc.h" 35 #include "clang/Frontend/DependencyOutputOptions.h" 36 #include "clang/Frontend/FrontendDiagnostic.h" 37 #include "clang/Frontend/FrontendOptions.h" 38 #include "clang/Frontend/FrontendPluginRegistry.h" 39 #include "clang/Frontend/MigratorOptions.h" 40 #include "clang/Frontend/PreprocessorOutputOptions.h" 41 #include "clang/Frontend/TextDiagnosticBuffer.h" 42 #include "clang/Frontend/Utils.h" 43 #include "clang/Lex/HeaderSearchOptions.h" 44 #include "clang/Lex/PreprocessorOptions.h" 45 #include "clang/Sema/CodeCompleteOptions.h" 46 #include "clang/Serialization/ASTBitCodes.h" 47 #include "clang/Serialization/ModuleFileExtension.h" 48 #include "clang/StaticAnalyzer/Core/AnalyzerOptions.h" 49 #include "llvm/ADT/APInt.h" 50 #include "llvm/ADT/ArrayRef.h" 51 #include "llvm/ADT/CachedHashString.h" 52 #include "llvm/ADT/DenseSet.h" 53 #include "llvm/ADT/FloatingPointMode.h" 54 #include "llvm/ADT/Hashing.h" 55 #include "llvm/ADT/None.h" 56 #include "llvm/ADT/Optional.h" 57 #include "llvm/ADT/STLExtras.h" 58 #include "llvm/ADT/SmallString.h" 59 #include "llvm/ADT/SmallVector.h" 60 #include "llvm/ADT/StringRef.h" 61 #include "llvm/ADT/StringSwitch.h" 62 #include "llvm/ADT/Triple.h" 63 #include "llvm/ADT/Twine.h" 64 #include "llvm/Config/llvm-config.h" 65 #include "llvm/IR/DebugInfoMetadata.h" 66 #include "llvm/Linker/Linker.h" 67 #include "llvm/MC/MCTargetOptions.h" 68 #include "llvm/Option/Arg.h" 69 #include "llvm/Option/ArgList.h" 70 #include "llvm/Option/OptSpecifier.h" 71 #include "llvm/Option/OptTable.h" 72 #include "llvm/Option/Option.h" 73 #include "llvm/ProfileData/InstrProfReader.h" 74 #include "llvm/Remarks/HotnessThresholdParser.h" 75 #include "llvm/Support/CodeGen.h" 76 #include "llvm/Support/Compiler.h" 77 #include "llvm/Support/Error.h" 78 #include "llvm/Support/ErrorHandling.h" 79 #include "llvm/Support/ErrorOr.h" 80 #include "llvm/Support/FileSystem.h" 81 #include "llvm/Support/HashBuilder.h" 82 #include "llvm/Support/Host.h" 83 #include "llvm/Support/MathExtras.h" 84 #include "llvm/Support/MemoryBuffer.h" 85 #include "llvm/Support/Path.h" 86 #include "llvm/Support/Process.h" 87 #include "llvm/Support/Regex.h" 88 #include "llvm/Support/VersionTuple.h" 89 #include "llvm/Support/VirtualFileSystem.h" 90 #include "llvm/Support/raw_ostream.h" 91 #include "llvm/Target/TargetOptions.h" 92 #include <algorithm> 93 #include <atomic> 94 #include <cassert> 95 #include <cstddef> 96 #include <cstring> 97 #include <ctime> 98 #include <fstream> 99 #include <limits> 100 #include <memory> 101 #include <string> 102 #include <tuple> 103 #include <type_traits> 104 #include <utility> 105 #include <vector> 106 107 using namespace clang; 108 using namespace driver; 109 using namespace options; 110 using namespace llvm::opt; 111 112 //===----------------------------------------------------------------------===// 113 // Helpers. 114 //===----------------------------------------------------------------------===// 115 116 // Parse misexpect tolerance argument value. 117 // Valid option values are integers in the range [0, 100) 118 inline Expected<Optional<uint32_t>> parseToleranceOption(StringRef Arg) { 119 uint32_t Val; 120 if (Arg.getAsInteger(10, Val)) 121 return llvm::createStringError(llvm::inconvertibleErrorCode(), 122 "Not an integer: %s", Arg.data()); 123 return Val; 124 } 125 126 //===----------------------------------------------------------------------===// 127 // Initialization. 128 //===----------------------------------------------------------------------===// 129 130 CompilerInvocationRefBase::CompilerInvocationRefBase() 131 : LangOpts(new LangOptions()), TargetOpts(new TargetOptions()), 132 DiagnosticOpts(new DiagnosticOptions()), 133 HeaderSearchOpts(new HeaderSearchOptions()), 134 PreprocessorOpts(new PreprocessorOptions()), 135 AnalyzerOpts(new AnalyzerOptions()) {} 136 137 CompilerInvocationRefBase::CompilerInvocationRefBase( 138 const CompilerInvocationRefBase &X) 139 : LangOpts(new LangOptions(*X.getLangOpts())), 140 TargetOpts(new TargetOptions(X.getTargetOpts())), 141 DiagnosticOpts(new DiagnosticOptions(X.getDiagnosticOpts())), 142 HeaderSearchOpts(new HeaderSearchOptions(X.getHeaderSearchOpts())), 143 PreprocessorOpts(new PreprocessorOptions(X.getPreprocessorOpts())), 144 AnalyzerOpts(new AnalyzerOptions(*X.getAnalyzerOpts())) {} 145 146 CompilerInvocationRefBase::CompilerInvocationRefBase( 147 CompilerInvocationRefBase &&X) = default; 148 149 CompilerInvocationRefBase & 150 CompilerInvocationRefBase::operator=(CompilerInvocationRefBase X) { 151 LangOpts.swap(X.LangOpts); 152 TargetOpts.swap(X.TargetOpts); 153 DiagnosticOpts.swap(X.DiagnosticOpts); 154 HeaderSearchOpts.swap(X.HeaderSearchOpts); 155 PreprocessorOpts.swap(X.PreprocessorOpts); 156 AnalyzerOpts.swap(X.AnalyzerOpts); 157 return *this; 158 } 159 160 CompilerInvocationRefBase & 161 CompilerInvocationRefBase::operator=(CompilerInvocationRefBase &&X) = default; 162 163 CompilerInvocationRefBase::~CompilerInvocationRefBase() = default; 164 165 //===----------------------------------------------------------------------===// 166 // Normalizers 167 //===----------------------------------------------------------------------===// 168 169 #define SIMPLE_ENUM_VALUE_TABLE 170 #include "clang/Driver/Options.inc" 171 #undef SIMPLE_ENUM_VALUE_TABLE 172 173 static llvm::Optional<bool> normalizeSimpleFlag(OptSpecifier Opt, 174 unsigned TableIndex, 175 const ArgList &Args, 176 DiagnosticsEngine &Diags) { 177 if (Args.hasArg(Opt)) 178 return true; 179 return None; 180 } 181 182 static Optional<bool> normalizeSimpleNegativeFlag(OptSpecifier Opt, unsigned, 183 const ArgList &Args, 184 DiagnosticsEngine &) { 185 if (Args.hasArg(Opt)) 186 return false; 187 return None; 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<T, uint64_t>::value && 203 llvm::is_integral_or_enum<T>::value; 204 } 205 206 template <typename T, 207 std::enable_if_t<!is_uint64_t_convertible<T>(), bool> = false> 208 static auto makeFlagToValueNormalizer(T Value) { 209 return [Value](OptSpecifier Opt, unsigned, const ArgList &Args, 210 DiagnosticsEngine &) -> Optional<T> { 211 if (Args.hasArg(Opt)) 212 return Value; 213 return None; 214 }; 215 } 216 217 template <typename T, 218 std::enable_if_t<is_uint64_t_convertible<T>(), bool> = false> 219 static auto makeFlagToValueNormalizer(T Value) { 220 return makeFlagToValueNormalizer(uint64_t(Value)); 221 } 222 223 static auto makeBooleanOptionNormalizer(bool Value, bool OtherValue, 224 OptSpecifier OtherOpt) { 225 return [Value, OtherValue, OtherOpt](OptSpecifier Opt, unsigned, 226 const ArgList &Args, 227 DiagnosticsEngine &) -> Optional<bool> { 228 if (const Arg *A = Args.getLastArg(Opt, OtherOpt)) { 229 return A->getOption().matches(Opt) ? Value : OtherValue; 230 } 231 return None; 232 }; 233 } 234 235 static auto makeBooleanOptionDenormalizer(bool Value) { 236 return [Value](SmallVectorImpl<const char *> &Args, const char *Spelling, 237 CompilerInvocation::StringAllocator, Option::OptionClass, 238 unsigned, bool KeyPath) { 239 if (KeyPath == Value) 240 Args.push_back(Spelling); 241 }; 242 } 243 244 static void denormalizeStringImpl(SmallVectorImpl<const char *> &Args, 245 const char *Spelling, 246 CompilerInvocation::StringAllocator SA, 247 Option::OptionClass OptClass, unsigned, 248 const Twine &Value) { 249 switch (OptClass) { 250 case Option::SeparateClass: 251 case Option::JoinedOrSeparateClass: 252 case Option::JoinedAndSeparateClass: 253 Args.push_back(Spelling); 254 Args.push_back(SA(Value)); 255 break; 256 case Option::JoinedClass: 257 case Option::CommaJoinedClass: 258 Args.push_back(SA(Twine(Spelling) + Value)); 259 break; 260 default: 261 llvm_unreachable("Cannot denormalize an option with option class " 262 "incompatible with string denormalization."); 263 } 264 } 265 266 template <typename T> 267 static void 268 denormalizeString(SmallVectorImpl<const char *> &Args, const char *Spelling, 269 CompilerInvocation::StringAllocator SA, 270 Option::OptionClass OptClass, unsigned TableIndex, T Value) { 271 denormalizeStringImpl(Args, Spelling, SA, OptClass, TableIndex, Twine(Value)); 272 } 273 274 static Optional<SimpleEnumValue> 275 findValueTableByName(const SimpleEnumValueTable &Table, StringRef Name) { 276 for (int I = 0, E = Table.Size; I != E; ++I) 277 if (Name == Table.Table[I].Name) 278 return Table.Table[I]; 279 280 return None; 281 } 282 283 static Optional<SimpleEnumValue> 284 findValueTableByValue(const SimpleEnumValueTable &Table, unsigned Value) { 285 for (int I = 0, E = Table.Size; I != E; ++I) 286 if (Value == Table.Table[I].Value) 287 return Table.Table[I]; 288 289 return None; 290 } 291 292 static llvm::Optional<unsigned> normalizeSimpleEnum(OptSpecifier Opt, 293 unsigned TableIndex, 294 const ArgList &Args, 295 DiagnosticsEngine &Diags) { 296 assert(TableIndex < SimpleEnumValueTablesSize); 297 const SimpleEnumValueTable &Table = SimpleEnumValueTables[TableIndex]; 298 299 auto *Arg = Args.getLastArg(Opt); 300 if (!Arg) 301 return None; 302 303 StringRef ArgValue = Arg->getValue(); 304 if (auto MaybeEnumVal = findValueTableByName(Table, ArgValue)) 305 return MaybeEnumVal->Value; 306 307 Diags.Report(diag::err_drv_invalid_value) 308 << Arg->getAsString(Args) << ArgValue; 309 return None; 310 } 311 312 static void denormalizeSimpleEnumImpl(SmallVectorImpl<const char *> &Args, 313 const char *Spelling, 314 CompilerInvocation::StringAllocator SA, 315 Option::OptionClass OptClass, 316 unsigned TableIndex, unsigned Value) { 317 assert(TableIndex < SimpleEnumValueTablesSize); 318 const SimpleEnumValueTable &Table = SimpleEnumValueTables[TableIndex]; 319 if (auto MaybeEnumVal = findValueTableByValue(Table, Value)) { 320 denormalizeString(Args, Spelling, SA, OptClass, TableIndex, 321 MaybeEnumVal->Name); 322 } else { 323 llvm_unreachable("The simple enum value was not correctly defined in " 324 "the tablegen option description"); 325 } 326 } 327 328 template <typename T> 329 static void denormalizeSimpleEnum(SmallVectorImpl<const char *> &Args, 330 const char *Spelling, 331 CompilerInvocation::StringAllocator SA, 332 Option::OptionClass OptClass, 333 unsigned TableIndex, T Value) { 334 return denormalizeSimpleEnumImpl(Args, Spelling, SA, OptClass, TableIndex, 335 static_cast<unsigned>(Value)); 336 } 337 338 static Optional<std::string> normalizeString(OptSpecifier Opt, int TableIndex, 339 const ArgList &Args, 340 DiagnosticsEngine &Diags) { 341 auto *Arg = Args.getLastArg(Opt); 342 if (!Arg) 343 return None; 344 return std::string(Arg->getValue()); 345 } 346 347 template <typename IntTy> 348 static Optional<IntTy> normalizeStringIntegral(OptSpecifier Opt, int, 349 const ArgList &Args, 350 DiagnosticsEngine &Diags) { 351 auto *Arg = Args.getLastArg(Opt); 352 if (!Arg) 353 return None; 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 None; 359 } 360 return Res; 361 } 362 363 static 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 Optional<std::string> normalizeTriple(OptSpecifier Opt, int TableIndex, 402 const ArgList &Args, 403 DiagnosticsEngine &Diags) { 404 auto *Arg = Args.getLastArg(Opt); 405 if (!Arg) 406 return None; 407 return llvm::Triple::normalize(Arg->getValue()); 408 } 409 410 template <typename T, typename U> 411 static T mergeForwardValue(T KeyPath, U Value) { 412 return static_cast<T>(Value); 413 } 414 415 template <typename T, typename U> static T mergeMaskValue(T KeyPath, U Value) { 416 return KeyPath | Value; 417 } 418 419 template <typename T> static T extractForwardValue(T KeyPath) { 420 return KeyPath; 421 } 422 423 template <typename T, typename U, U Value> 424 static T extractMaskValue(T KeyPath) { 425 return ((KeyPath & Value) == Value) ? static_cast<T>(Value) : T(); 426 } 427 428 #define PARSE_OPTION_WITH_MARSHALLING( \ 429 ARGS, DIAGS, ID, FLAGS, PARAM, SHOULD_PARSE, KEYPATH, DEFAULT_VALUE, \ 430 IMPLIED_CHECK, IMPLIED_VALUE, NORMALIZER, MERGER, TABLE_INDEX) \ 431 if ((FLAGS)&options::CC1Option) { \ 432 KEYPATH = MERGER(KEYPATH, DEFAULT_VALUE); \ 433 if (IMPLIED_CHECK) \ 434 KEYPATH = MERGER(KEYPATH, IMPLIED_VALUE); \ 435 if (SHOULD_PARSE) \ 436 if (auto MaybeValue = NORMALIZER(OPT_##ID, TABLE_INDEX, ARGS, DIAGS)) \ 437 KEYPATH = \ 438 MERGER(KEYPATH, static_cast<decltype(KEYPATH)>(*MaybeValue)); \ 439 } 440 441 // Capture the extracted value as a lambda argument to avoid potential issues 442 // with lifetime extension of the reference. 443 #define GENERATE_OPTION_WITH_MARSHALLING( \ 444 ARGS, STRING_ALLOCATOR, KIND, FLAGS, SPELLING, ALWAYS_EMIT, KEYPATH, \ 445 DEFAULT_VALUE, IMPLIED_CHECK, IMPLIED_VALUE, DENORMALIZER, EXTRACTOR, \ 446 TABLE_INDEX) \ 447 if ((FLAGS)&options::CC1Option) { \ 448 [&](const auto &Extracted) { \ 449 if (ALWAYS_EMIT || \ 450 (Extracted != \ 451 static_cast<decltype(KEYPATH)>((IMPLIED_CHECK) ? (IMPLIED_VALUE) \ 452 : (DEFAULT_VALUE)))) \ 453 DENORMALIZER(ARGS, SPELLING, STRING_ALLOCATOR, Option::KIND##Class, \ 454 TABLE_INDEX, Extracted); \ 455 }(EXTRACTOR(KEYPATH)); \ 456 } 457 458 static StringRef GetInputKindName(InputKind IK); 459 460 static bool FixupInvocation(CompilerInvocation &Invocation, 461 DiagnosticsEngine &Diags, const ArgList &Args, 462 InputKind IK) { 463 unsigned NumErrorsBefore = Diags.getNumErrors(); 464 465 LangOptions &LangOpts = *Invocation.getLangOpts(); 466 CodeGenOptions &CodeGenOpts = Invocation.getCodeGenOpts(); 467 TargetOptions &TargetOpts = Invocation.getTargetOpts(); 468 FrontendOptions &FrontendOpts = Invocation.getFrontendOpts(); 469 CodeGenOpts.XRayInstrumentFunctions = LangOpts.XRayInstrument; 470 CodeGenOpts.XRayAlwaysEmitCustomEvents = LangOpts.XRayAlwaysEmitCustomEvents; 471 CodeGenOpts.XRayAlwaysEmitTypedEvents = LangOpts.XRayAlwaysEmitTypedEvents; 472 CodeGenOpts.DisableFree = FrontendOpts.DisableFree; 473 FrontendOpts.GenerateGlobalModuleIndex = FrontendOpts.UseGlobalModuleIndex; 474 if (FrontendOpts.ShowStats) 475 CodeGenOpts.ClearASTBeforeBackend = false; 476 LangOpts.SanitizeCoverage = CodeGenOpts.hasSanitizeCoverage(); 477 LangOpts.ForceEmitVTables = CodeGenOpts.ForceEmitVTables; 478 LangOpts.SpeculativeLoadHardening = CodeGenOpts.SpeculativeLoadHardening; 479 LangOpts.CurrentModule = LangOpts.ModuleName; 480 481 llvm::Triple T(TargetOpts.Triple); 482 llvm::Triple::ArchType Arch = T.getArch(); 483 484 CodeGenOpts.CodeModel = TargetOpts.CodeModel; 485 486 if (LangOpts.getExceptionHandling() != 487 LangOptions::ExceptionHandlingKind::None && 488 T.isWindowsMSVCEnvironment()) 489 Diags.Report(diag::err_fe_invalid_exception_model) 490 << static_cast<unsigned>(LangOpts.getExceptionHandling()) << T.str(); 491 492 if (LangOpts.AppleKext && !LangOpts.CPlusPlus) 493 Diags.Report(diag::warn_c_kext); 494 495 if (Args.hasArg(OPT_fconcepts_ts)) 496 Diags.Report(diag::warn_fe_concepts_ts_flag); 497 498 if (LangOpts.NewAlignOverride && 499 !llvm::isPowerOf2_32(LangOpts.NewAlignOverride)) { 500 Arg *A = Args.getLastArg(OPT_fnew_alignment_EQ); 501 Diags.Report(diag::err_fe_invalid_alignment) 502 << A->getAsString(Args) << A->getValue(); 503 LangOpts.NewAlignOverride = 0; 504 } 505 506 // Prevent the user from specifying both -fsycl-is-device and -fsycl-is-host. 507 if (LangOpts.SYCLIsDevice && LangOpts.SYCLIsHost) 508 Diags.Report(diag::err_drv_argument_not_allowed_with) << "-fsycl-is-device" 509 << "-fsycl-is-host"; 510 511 if (Args.hasArg(OPT_fgnu89_inline) && LangOpts.CPlusPlus) 512 Diags.Report(diag::err_drv_argument_not_allowed_with) 513 << "-fgnu89-inline" << GetInputKindName(IK); 514 515 if (Args.hasArg(OPT_hlsl_entrypoint) && !LangOpts.HLSL) 516 Diags.Report(diag::err_drv_argument_not_allowed_with) 517 << "-hlsl-entry" << GetInputKindName(IK); 518 519 if (Args.hasArg(OPT_fgpu_allow_device_init) && !LangOpts.HIP) 520 Diags.Report(diag::warn_ignored_hip_only_option) 521 << Args.getLastArg(OPT_fgpu_allow_device_init)->getAsString(Args); 522 523 if (Args.hasArg(OPT_gpu_max_threads_per_block_EQ) && !LangOpts.HIP) 524 Diags.Report(diag::warn_ignored_hip_only_option) 525 << Args.getLastArg(OPT_gpu_max_threads_per_block_EQ)->getAsString(Args); 526 527 // When these options are used, the compiler is allowed to apply 528 // optimizations that may affect the final result. For example 529 // (x+y)+z is transformed to x+(y+z) but may not give the same 530 // final result; it's not value safe. 531 // Another example can be to simplify x/x to 1.0 but x could be 0.0, INF 532 // or NaN. Final result may then differ. An error is issued when the eval 533 // method is set with one of these options. 534 if (Args.hasArg(OPT_ffp_eval_method_EQ)) { 535 if (LangOpts.ApproxFunc) 536 Diags.Report(diag::err_incompatible_fp_eval_method_options) << 0; 537 if (LangOpts.AllowFPReassoc) 538 Diags.Report(diag::err_incompatible_fp_eval_method_options) << 1; 539 if (LangOpts.AllowRecip) 540 Diags.Report(diag::err_incompatible_fp_eval_method_options) << 2; 541 } 542 543 // -cl-strict-aliasing needs to emit diagnostic in the case where CL > 1.0. 544 // This option should be deprecated for CL > 1.0 because 545 // this option was added for compatibility with OpenCL 1.0. 546 if (Args.getLastArg(OPT_cl_strict_aliasing) && 547 (LangOpts.getOpenCLCompatibleVersion() > 100)) 548 Diags.Report(diag::warn_option_invalid_ocl_version) 549 << LangOpts.getOpenCLVersionString() 550 << Args.getLastArg(OPT_cl_strict_aliasing)->getAsString(Args); 551 552 if (Arg *A = Args.getLastArg(OPT_fdefault_calling_conv_EQ)) { 553 auto DefaultCC = LangOpts.getDefaultCallingConv(); 554 555 bool emitError = (DefaultCC == LangOptions::DCC_FastCall || 556 DefaultCC == LangOptions::DCC_StdCall) && 557 Arch != llvm::Triple::x86; 558 emitError |= (DefaultCC == LangOptions::DCC_VectorCall || 559 DefaultCC == LangOptions::DCC_RegCall) && 560 !T.isX86(); 561 if (emitError) 562 Diags.Report(diag::err_drv_argument_not_allowed_with) 563 << A->getSpelling() << T.getTriple(); 564 } 565 566 return Diags.getNumErrors() == NumErrorsBefore; 567 } 568 569 //===----------------------------------------------------------------------===// 570 // Deserialization (from args) 571 //===----------------------------------------------------------------------===// 572 573 static unsigned getOptimizationLevel(ArgList &Args, InputKind IK, 574 DiagnosticsEngine &Diags) { 575 unsigned DefaultOpt = llvm::CodeGenOpt::None; 576 if ((IK.getLanguage() == Language::OpenCL || 577 IK.getLanguage() == Language::OpenCLCXX) && 578 !Args.hasArg(OPT_cl_opt_disable)) 579 DefaultOpt = llvm::CodeGenOpt::Default; 580 581 if (Arg *A = Args.getLastArg(options::OPT_O_Group)) { 582 if (A->getOption().matches(options::OPT_O0)) 583 return llvm::CodeGenOpt::None; 584 585 if (A->getOption().matches(options::OPT_Ofast)) 586 return llvm::CodeGenOpt::Aggressive; 587 588 assert(A->getOption().matches(options::OPT_O)); 589 590 StringRef S(A->getValue()); 591 if (S == "s" || S == "z") 592 return llvm::CodeGenOpt::Default; 593 594 if (S == "g") 595 return llvm::CodeGenOpt::Less; 596 597 return getLastArgIntValue(Args, OPT_O, DefaultOpt, Diags); 598 } 599 600 return DefaultOpt; 601 } 602 603 static unsigned getOptimizationLevelSize(ArgList &Args) { 604 if (Arg *A = Args.getLastArg(options::OPT_O_Group)) { 605 if (A->getOption().matches(options::OPT_O)) { 606 switch (A->getValue()[0]) { 607 default: 608 return 0; 609 case 's': 610 return 1; 611 case 'z': 612 return 2; 613 } 614 } 615 } 616 return 0; 617 } 618 619 static void GenerateArg(SmallVectorImpl<const char *> &Args, 620 llvm::opt::OptSpecifier OptSpecifier, 621 CompilerInvocation::StringAllocator SA) { 622 Option Opt = getDriverOptTable().getOption(OptSpecifier); 623 denormalizeSimpleFlag(Args, SA(Opt.getPrefix() + Opt.getName()), SA, 624 Option::OptionClass::FlagClass, 0); 625 } 626 627 static void GenerateArg(SmallVectorImpl<const char *> &Args, 628 llvm::opt::OptSpecifier OptSpecifier, 629 const Twine &Value, 630 CompilerInvocation::StringAllocator SA) { 631 Option Opt = getDriverOptTable().getOption(OptSpecifier); 632 denormalizeString(Args, SA(Opt.getPrefix() + Opt.getName()), SA, 633 Opt.getKind(), 0, Value); 634 } 635 636 // Parse command line arguments into CompilerInvocation. 637 using ParseFn = 638 llvm::function_ref<bool(CompilerInvocation &, ArrayRef<const char *>, 639 DiagnosticsEngine &, const char *)>; 640 641 // Generate command line arguments from CompilerInvocation. 642 using GenerateFn = llvm::function_ref<void( 643 CompilerInvocation &, SmallVectorImpl<const char *> &, 644 CompilerInvocation::StringAllocator)>; 645 646 // May perform round-trip of command line arguments. By default, the round-trip 647 // is enabled in assert builds. This can be overwritten at run-time via the 648 // "-round-trip-args" and "-no-round-trip-args" command line flags. 649 // During round-trip, the command line arguments are parsed into a dummy 650 // instance of CompilerInvocation which is used to generate the command line 651 // arguments again. The real CompilerInvocation instance is then created by 652 // parsing the generated arguments, not the original ones. 653 static bool RoundTrip(ParseFn Parse, GenerateFn Generate, 654 CompilerInvocation &RealInvocation, 655 CompilerInvocation &DummyInvocation, 656 ArrayRef<const char *> CommandLineArgs, 657 DiagnosticsEngine &Diags, const char *Argv0) { 658 #ifndef NDEBUG 659 bool DoRoundTripDefault = true; 660 #else 661 bool DoRoundTripDefault = false; 662 #endif 663 664 bool DoRoundTrip = DoRoundTripDefault; 665 for (const auto *Arg : CommandLineArgs) { 666 if (Arg == StringRef("-round-trip-args")) 667 DoRoundTrip = true; 668 if (Arg == StringRef("-no-round-trip-args")) 669 DoRoundTrip = false; 670 } 671 672 // If round-trip was not requested, simply run the parser with the real 673 // invocation diagnostics. 674 if (!DoRoundTrip) 675 return Parse(RealInvocation, CommandLineArgs, Diags, Argv0); 676 677 // Serializes quoted (and potentially escaped) arguments. 678 auto SerializeArgs = [](ArrayRef<const char *> Args) { 679 std::string Buffer; 680 llvm::raw_string_ostream OS(Buffer); 681 for (const char *Arg : Args) { 682 llvm::sys::printArg(OS, Arg, /*Quote=*/true); 683 OS << ' '; 684 } 685 OS.flush(); 686 return Buffer; 687 }; 688 689 // Setup a dummy DiagnosticsEngine. 690 DiagnosticsEngine DummyDiags(new DiagnosticIDs(), new DiagnosticOptions()); 691 DummyDiags.setClient(new TextDiagnosticBuffer()); 692 693 // Run the first parse on the original arguments with the dummy invocation and 694 // diagnostics. 695 if (!Parse(DummyInvocation, CommandLineArgs, DummyDiags, Argv0) || 696 DummyDiags.getNumWarnings() != 0) { 697 // If the first parse did not succeed, it must be user mistake (invalid 698 // command line arguments). We won't be able to generate arguments that 699 // would reproduce the same result. Let's fail again with the real 700 // invocation and diagnostics, so all side-effects of parsing are visible. 701 unsigned NumWarningsBefore = Diags.getNumWarnings(); 702 auto Success = Parse(RealInvocation, CommandLineArgs, Diags, Argv0); 703 if (!Success || Diags.getNumWarnings() != NumWarningsBefore) 704 return Success; 705 706 // Parse with original options and diagnostics succeeded even though it 707 // shouldn't have. Something is off. 708 Diags.Report(diag::err_cc1_round_trip_fail_then_ok); 709 Diags.Report(diag::note_cc1_round_trip_original) 710 << SerializeArgs(CommandLineArgs); 711 return false; 712 } 713 714 // Setup string allocator. 715 llvm::BumpPtrAllocator Alloc; 716 llvm::StringSaver StringPool(Alloc); 717 auto SA = [&StringPool](const Twine &Arg) { 718 return StringPool.save(Arg).data(); 719 }; 720 721 // Generate arguments from the dummy invocation. If Generate is the 722 // inverse of Parse, the newly generated arguments must have the same 723 // semantics as the original. 724 SmallVector<const char *> GeneratedArgs1; 725 Generate(DummyInvocation, GeneratedArgs1, SA); 726 727 // Run the second parse, now on the generated arguments, and with the real 728 // invocation and diagnostics. The result is what we will end up using for the 729 // rest of compilation, so if Generate is not inverse of Parse, something down 730 // the line will break. 731 bool Success2 = Parse(RealInvocation, GeneratedArgs1, Diags, Argv0); 732 733 // The first parse on original arguments succeeded, but second parse of 734 // generated arguments failed. Something must be wrong with the generator. 735 if (!Success2) { 736 Diags.Report(diag::err_cc1_round_trip_ok_then_fail); 737 Diags.Report(diag::note_cc1_round_trip_generated) 738 << 1 << SerializeArgs(GeneratedArgs1); 739 return false; 740 } 741 742 // Generate arguments again, this time from the options we will end up using 743 // for the rest of the compilation. 744 SmallVector<const char *> GeneratedArgs2; 745 Generate(RealInvocation, GeneratedArgs2, SA); 746 747 // Compares two lists of generated arguments. 748 auto Equal = [](const ArrayRef<const char *> A, 749 const ArrayRef<const char *> B) { 750 return std::equal(A.begin(), A.end(), B.begin(), B.end(), 751 [](const char *AElem, const char *BElem) { 752 return StringRef(AElem) == StringRef(BElem); 753 }); 754 }; 755 756 // If we generated different arguments from what we assume are two 757 // semantically equivalent CompilerInvocations, the Generate function may 758 // be non-deterministic. 759 if (!Equal(GeneratedArgs1, GeneratedArgs2)) { 760 Diags.Report(diag::err_cc1_round_trip_mismatch); 761 Diags.Report(diag::note_cc1_round_trip_generated) 762 << 1 << SerializeArgs(GeneratedArgs1); 763 Diags.Report(diag::note_cc1_round_trip_generated) 764 << 2 << SerializeArgs(GeneratedArgs2); 765 return false; 766 } 767 768 Diags.Report(diag::remark_cc1_round_trip_generated) 769 << 1 << SerializeArgs(GeneratedArgs1); 770 Diags.Report(diag::remark_cc1_round_trip_generated) 771 << 2 << SerializeArgs(GeneratedArgs2); 772 773 return Success2; 774 } 775 776 static void addDiagnosticArgs(ArgList &Args, OptSpecifier Group, 777 OptSpecifier GroupWithValue, 778 std::vector<std::string> &Diagnostics) { 779 for (auto *A : Args.filtered(Group)) { 780 if (A->getOption().getKind() == Option::FlagClass) { 781 // The argument is a pure flag (such as OPT_Wall or OPT_Wdeprecated). Add 782 // its name (minus the "W" or "R" at the beginning) to the diagnostics. 783 Diagnostics.push_back( 784 std::string(A->getOption().getName().drop_front(1))); 785 } else if (A->getOption().matches(GroupWithValue)) { 786 // This is -Wfoo= or -Rfoo=, where foo is the name of the diagnostic 787 // group. Add only the group name to the diagnostics. 788 Diagnostics.push_back( 789 std::string(A->getOption().getName().drop_front(1).rtrim("=-"))); 790 } else { 791 // Otherwise, add its value (for OPT_W_Joined and similar). 792 Diagnostics.push_back(A->getValue()); 793 } 794 } 795 } 796 797 // Parse the Static Analyzer configuration. If \p Diags is set to nullptr, 798 // it won't verify the input. 799 static void parseAnalyzerConfigs(AnalyzerOptions &AnOpts, 800 DiagnosticsEngine *Diags); 801 802 static void getAllNoBuiltinFuncValues(ArgList &Args, 803 std::vector<std::string> &Funcs) { 804 std::vector<std::string> Values = Args.getAllArgValues(OPT_fno_builtin_); 805 auto BuiltinEnd = llvm::partition(Values, Builtin::Context::isBuiltinFunc); 806 Funcs.insert(Funcs.end(), Values.begin(), BuiltinEnd); 807 } 808 809 static void GenerateAnalyzerArgs(AnalyzerOptions &Opts, 810 SmallVectorImpl<const char *> &Args, 811 CompilerInvocation::StringAllocator SA) { 812 const AnalyzerOptions *AnalyzerOpts = &Opts; 813 814 #define ANALYZER_OPTION_WITH_MARSHALLING( \ 815 PREFIX_TYPE, NAME, ID, KIND, GROUP, ALIAS, ALIASARGS, FLAGS, PARAM, \ 816 HELPTEXT, METAVAR, VALUES, SPELLING, SHOULD_PARSE, ALWAYS_EMIT, KEYPATH, \ 817 DEFAULT_VALUE, IMPLIED_CHECK, IMPLIED_VALUE, NORMALIZER, DENORMALIZER, \ 818 MERGER, EXTRACTOR, TABLE_INDEX) \ 819 GENERATE_OPTION_WITH_MARSHALLING( \ 820 Args, SA, KIND, FLAGS, SPELLING, ALWAYS_EMIT, KEYPATH, DEFAULT_VALUE, \ 821 IMPLIED_CHECK, IMPLIED_VALUE, DENORMALIZER, EXTRACTOR, TABLE_INDEX) 822 #include "clang/Driver/Options.inc" 823 #undef ANALYZER_OPTION_WITH_MARSHALLING 824 825 if (Opts.AnalysisConstraintsOpt != RangeConstraintsModel) { 826 switch (Opts.AnalysisConstraintsOpt) { 827 #define ANALYSIS_CONSTRAINTS(NAME, CMDFLAG, DESC, CREATFN) \ 828 case NAME##Model: \ 829 GenerateArg(Args, OPT_analyzer_constraints, CMDFLAG, SA); \ 830 break; 831 #include "clang/StaticAnalyzer/Core/Analyses.def" 832 default: 833 llvm_unreachable("Tried to generate unknown analysis constraint."); 834 } 835 } 836 837 if (Opts.AnalysisDiagOpt != PD_HTML) { 838 switch (Opts.AnalysisDiagOpt) { 839 #define ANALYSIS_DIAGNOSTICS(NAME, CMDFLAG, DESC, CREATFN) \ 840 case PD_##NAME: \ 841 GenerateArg(Args, OPT_analyzer_output, CMDFLAG, SA); \ 842 break; 843 #include "clang/StaticAnalyzer/Core/Analyses.def" 844 default: 845 llvm_unreachable("Tried to generate unknown analysis diagnostic client."); 846 } 847 } 848 849 if (Opts.AnalysisPurgeOpt != PurgeStmt) { 850 switch (Opts.AnalysisPurgeOpt) { 851 #define ANALYSIS_PURGE(NAME, CMDFLAG, DESC) \ 852 case NAME: \ 853 GenerateArg(Args, OPT_analyzer_purge, CMDFLAG, SA); \ 854 break; 855 #include "clang/StaticAnalyzer/Core/Analyses.def" 856 default: 857 llvm_unreachable("Tried to generate unknown analysis purge mode."); 858 } 859 } 860 861 if (Opts.InliningMode != NoRedundancy) { 862 switch (Opts.InliningMode) { 863 #define ANALYSIS_INLINING_MODE(NAME, CMDFLAG, DESC) \ 864 case NAME: \ 865 GenerateArg(Args, OPT_analyzer_inlining_mode, CMDFLAG, SA); \ 866 break; 867 #include "clang/StaticAnalyzer/Core/Analyses.def" 868 default: 869 llvm_unreachable("Tried to generate unknown analysis inlining mode."); 870 } 871 } 872 873 for (const auto &CP : Opts.CheckersAndPackages) { 874 OptSpecifier Opt = 875 CP.second ? OPT_analyzer_checker : OPT_analyzer_disable_checker; 876 GenerateArg(Args, Opt, CP.first, SA); 877 } 878 879 AnalyzerOptions ConfigOpts; 880 parseAnalyzerConfigs(ConfigOpts, nullptr); 881 882 for (const auto &C : Opts.Config) { 883 // Don't generate anything that came from parseAnalyzerConfigs. It would be 884 // redundant and may not be valid on the command line. 885 auto Entry = ConfigOpts.Config.find(C.getKey()); 886 if (Entry != ConfigOpts.Config.end() && Entry->getValue() == C.getValue()) 887 continue; 888 889 GenerateArg(Args, OPT_analyzer_config, C.getKey() + "=" + C.getValue(), SA); 890 } 891 892 // Nothing to generate for FullCompilerInvocation. 893 } 894 895 static bool ParseAnalyzerArgs(AnalyzerOptions &Opts, ArgList &Args, 896 DiagnosticsEngine &Diags) { 897 unsigned NumErrorsBefore = Diags.getNumErrors(); 898 899 AnalyzerOptions *AnalyzerOpts = &Opts; 900 901 #define ANALYZER_OPTION_WITH_MARSHALLING( \ 902 PREFIX_TYPE, NAME, ID, KIND, GROUP, ALIAS, ALIASARGS, FLAGS, PARAM, \ 903 HELPTEXT, METAVAR, VALUES, SPELLING, SHOULD_PARSE, ALWAYS_EMIT, KEYPATH, \ 904 DEFAULT_VALUE, IMPLIED_CHECK, IMPLIED_VALUE, NORMALIZER, DENORMALIZER, \ 905 MERGER, EXTRACTOR, TABLE_INDEX) \ 906 PARSE_OPTION_WITH_MARSHALLING( \ 907 Args, Diags, ID, FLAGS, PARAM, SHOULD_PARSE, KEYPATH, DEFAULT_VALUE, \ 908 IMPLIED_CHECK, IMPLIED_VALUE, NORMALIZER, MERGER, TABLE_INDEX) 909 #include "clang/Driver/Options.inc" 910 #undef ANALYZER_OPTION_WITH_MARSHALLING 911 912 if (Arg *A = Args.getLastArg(OPT_analyzer_constraints)) { 913 StringRef Name = A->getValue(); 914 AnalysisConstraints Value = llvm::StringSwitch<AnalysisConstraints>(Name) 915 #define ANALYSIS_CONSTRAINTS(NAME, CMDFLAG, DESC, CREATFN) \ 916 .Case(CMDFLAG, NAME##Model) 917 #include "clang/StaticAnalyzer/Core/Analyses.def" 918 .Default(NumConstraints); 919 if (Value == NumConstraints) { 920 Diags.Report(diag::err_drv_invalid_value) 921 << A->getAsString(Args) << Name; 922 } else { 923 #ifndef LLVM_WITH_Z3 924 if (Value == AnalysisConstraints::Z3ConstraintsModel) { 925 Diags.Report(diag::err_analyzer_not_built_with_z3); 926 } 927 #endif // LLVM_WITH_Z3 928 Opts.AnalysisConstraintsOpt = Value; 929 } 930 } 931 932 if (Arg *A = Args.getLastArg(OPT_analyzer_output)) { 933 StringRef Name = A->getValue(); 934 AnalysisDiagClients Value = llvm::StringSwitch<AnalysisDiagClients>(Name) 935 #define ANALYSIS_DIAGNOSTICS(NAME, CMDFLAG, DESC, CREATFN) \ 936 .Case(CMDFLAG, PD_##NAME) 937 #include "clang/StaticAnalyzer/Core/Analyses.def" 938 .Default(NUM_ANALYSIS_DIAG_CLIENTS); 939 if (Value == NUM_ANALYSIS_DIAG_CLIENTS) { 940 Diags.Report(diag::err_drv_invalid_value) 941 << A->getAsString(Args) << Name; 942 } else { 943 Opts.AnalysisDiagOpt = Value; 944 } 945 } 946 947 if (Arg *A = Args.getLastArg(OPT_analyzer_purge)) { 948 StringRef Name = A->getValue(); 949 AnalysisPurgeMode Value = llvm::StringSwitch<AnalysisPurgeMode>(Name) 950 #define ANALYSIS_PURGE(NAME, CMDFLAG, DESC) \ 951 .Case(CMDFLAG, NAME) 952 #include "clang/StaticAnalyzer/Core/Analyses.def" 953 .Default(NumPurgeModes); 954 if (Value == NumPurgeModes) { 955 Diags.Report(diag::err_drv_invalid_value) 956 << A->getAsString(Args) << Name; 957 } else { 958 Opts.AnalysisPurgeOpt = Value; 959 } 960 } 961 962 if (Arg *A = Args.getLastArg(OPT_analyzer_inlining_mode)) { 963 StringRef Name = A->getValue(); 964 AnalysisInliningMode Value = llvm::StringSwitch<AnalysisInliningMode>(Name) 965 #define ANALYSIS_INLINING_MODE(NAME, CMDFLAG, DESC) \ 966 .Case(CMDFLAG, NAME) 967 #include "clang/StaticAnalyzer/Core/Analyses.def" 968 .Default(NumInliningModes); 969 if (Value == NumInliningModes) { 970 Diags.Report(diag::err_drv_invalid_value) 971 << A->getAsString(Args) << Name; 972 } else { 973 Opts.InliningMode = Value; 974 } 975 } 976 977 Opts.CheckersAndPackages.clear(); 978 for (const Arg *A : 979 Args.filtered(OPT_analyzer_checker, OPT_analyzer_disable_checker)) { 980 A->claim(); 981 bool IsEnabled = A->getOption().getID() == OPT_analyzer_checker; 982 // We can have a list of comma separated checker names, e.g: 983 // '-analyzer-checker=cocoa,unix' 984 StringRef CheckerAndPackageList = A->getValue(); 985 SmallVector<StringRef, 16> CheckersAndPackages; 986 CheckerAndPackageList.split(CheckersAndPackages, ","); 987 for (const StringRef &CheckerOrPackage : CheckersAndPackages) 988 Opts.CheckersAndPackages.emplace_back(std::string(CheckerOrPackage), 989 IsEnabled); 990 } 991 992 // Go through the analyzer configuration options. 993 for (const auto *A : Args.filtered(OPT_analyzer_config)) { 994 995 // We can have a list of comma separated config names, e.g: 996 // '-analyzer-config key1=val1,key2=val2' 997 StringRef configList = A->getValue(); 998 SmallVector<StringRef, 4> configVals; 999 configList.split(configVals, ","); 1000 for (const auto &configVal : configVals) { 1001 StringRef key, val; 1002 std::tie(key, val) = configVal.split("="); 1003 if (val.empty()) { 1004 Diags.Report(SourceLocation(), 1005 diag::err_analyzer_config_no_value) << configVal; 1006 break; 1007 } 1008 if (val.contains('=')) { 1009 Diags.Report(SourceLocation(), 1010 diag::err_analyzer_config_multiple_values) 1011 << configVal; 1012 break; 1013 } 1014 1015 // TODO: Check checker options too, possibly in CheckerRegistry. 1016 // Leave unknown non-checker configs unclaimed. 1017 if (!key.contains(":") && Opts.isUnknownAnalyzerConfig(key)) { 1018 if (Opts.ShouldEmitErrorsOnInvalidConfigValue) 1019 Diags.Report(diag::err_analyzer_config_unknown) << key; 1020 continue; 1021 } 1022 1023 A->claim(); 1024 Opts.Config[key] = std::string(val); 1025 } 1026 } 1027 1028 if (Opts.ShouldEmitErrorsOnInvalidConfigValue) 1029 parseAnalyzerConfigs(Opts, &Diags); 1030 else 1031 parseAnalyzerConfigs(Opts, nullptr); 1032 1033 llvm::raw_string_ostream os(Opts.FullCompilerInvocation); 1034 for (unsigned i = 0; i < Args.getNumInputArgStrings(); ++i) { 1035 if (i != 0) 1036 os << " "; 1037 os << Args.getArgString(i); 1038 } 1039 os.flush(); 1040 1041 return Diags.getNumErrors() == NumErrorsBefore; 1042 } 1043 1044 static StringRef getStringOption(AnalyzerOptions::ConfigTable &Config, 1045 StringRef OptionName, StringRef DefaultVal) { 1046 return Config.insert({OptionName, std::string(DefaultVal)}).first->second; 1047 } 1048 1049 static void initOption(AnalyzerOptions::ConfigTable &Config, 1050 DiagnosticsEngine *Diags, 1051 StringRef &OptionField, StringRef Name, 1052 StringRef DefaultVal) { 1053 // String options may be known to invalid (e.g. if the expected string is a 1054 // file name, but the file does not exist), those will have to be checked in 1055 // parseConfigs. 1056 OptionField = getStringOption(Config, Name, DefaultVal); 1057 } 1058 1059 static void initOption(AnalyzerOptions::ConfigTable &Config, 1060 DiagnosticsEngine *Diags, 1061 bool &OptionField, StringRef Name, bool DefaultVal) { 1062 auto PossiblyInvalidVal = llvm::StringSwitch<Optional<bool>>( 1063 getStringOption(Config, Name, (DefaultVal ? "true" : "false"))) 1064 .Case("true", true) 1065 .Case("false", false) 1066 .Default(None); 1067 1068 if (!PossiblyInvalidVal) { 1069 if (Diags) 1070 Diags->Report(diag::err_analyzer_config_invalid_input) 1071 << Name << "a boolean"; 1072 else 1073 OptionField = DefaultVal; 1074 } else 1075 OptionField = *PossiblyInvalidVal; 1076 } 1077 1078 static void initOption(AnalyzerOptions::ConfigTable &Config, 1079 DiagnosticsEngine *Diags, 1080 unsigned &OptionField, StringRef Name, 1081 unsigned DefaultVal) { 1082 1083 OptionField = DefaultVal; 1084 bool HasFailed = getStringOption(Config, Name, std::to_string(DefaultVal)) 1085 .getAsInteger(0, OptionField); 1086 if (Diags && HasFailed) 1087 Diags->Report(diag::err_analyzer_config_invalid_input) 1088 << Name << "an unsigned"; 1089 } 1090 1091 static void parseAnalyzerConfigs(AnalyzerOptions &AnOpts, 1092 DiagnosticsEngine *Diags) { 1093 // TODO: There's no need to store the entire configtable, it'd be plenty 1094 // enough to store checker options. 1095 1096 #define ANALYZER_OPTION(TYPE, NAME, CMDFLAG, DESC, DEFAULT_VAL) \ 1097 initOption(AnOpts.Config, Diags, AnOpts.NAME, CMDFLAG, DEFAULT_VAL); 1098 #define ANALYZER_OPTION_DEPENDS_ON_USER_MODE(...) 1099 #include "clang/StaticAnalyzer/Core/AnalyzerOptions.def" 1100 1101 assert(AnOpts.UserMode == "shallow" || AnOpts.UserMode == "deep"); 1102 const bool InShallowMode = AnOpts.UserMode == "shallow"; 1103 1104 #define ANALYZER_OPTION(...) 1105 #define ANALYZER_OPTION_DEPENDS_ON_USER_MODE(TYPE, NAME, CMDFLAG, DESC, \ 1106 SHALLOW_VAL, DEEP_VAL) \ 1107 initOption(AnOpts.Config, Diags, AnOpts.NAME, CMDFLAG, \ 1108 InShallowMode ? SHALLOW_VAL : DEEP_VAL); 1109 #include "clang/StaticAnalyzer/Core/AnalyzerOptions.def" 1110 1111 // At this point, AnalyzerOptions is configured. Let's validate some options. 1112 1113 // FIXME: Here we try to validate the silenced checkers or packages are valid. 1114 // The current approach only validates the registered checkers which does not 1115 // contain the runtime enabled checkers and optimally we would validate both. 1116 if (!AnOpts.RawSilencedCheckersAndPackages.empty()) { 1117 std::vector<StringRef> Checkers = 1118 AnOpts.getRegisteredCheckers(/*IncludeExperimental=*/true); 1119 std::vector<StringRef> Packages = 1120 AnOpts.getRegisteredPackages(/*IncludeExperimental=*/true); 1121 1122 SmallVector<StringRef, 16> CheckersAndPackages; 1123 AnOpts.RawSilencedCheckersAndPackages.split(CheckersAndPackages, ";"); 1124 1125 for (const StringRef &CheckerOrPackage : CheckersAndPackages) { 1126 if (Diags) { 1127 bool IsChecker = CheckerOrPackage.contains('.'); 1128 bool IsValidName = IsChecker 1129 ? llvm::is_contained(Checkers, CheckerOrPackage) 1130 : llvm::is_contained(Packages, CheckerOrPackage); 1131 1132 if (!IsValidName) 1133 Diags->Report(diag::err_unknown_analyzer_checker_or_package) 1134 << CheckerOrPackage; 1135 } 1136 1137 AnOpts.SilencedCheckersAndPackages.emplace_back(CheckerOrPackage); 1138 } 1139 } 1140 1141 if (!Diags) 1142 return; 1143 1144 if (AnOpts.ShouldTrackConditionsDebug && !AnOpts.ShouldTrackConditions) 1145 Diags->Report(diag::err_analyzer_config_invalid_input) 1146 << "track-conditions-debug" << "'track-conditions' to also be enabled"; 1147 1148 if (!AnOpts.CTUDir.empty() && !llvm::sys::fs::is_directory(AnOpts.CTUDir)) 1149 Diags->Report(diag::err_analyzer_config_invalid_input) << "ctu-dir" 1150 << "a filename"; 1151 1152 if (!AnOpts.ModelPath.empty() && 1153 !llvm::sys::fs::is_directory(AnOpts.ModelPath)) 1154 Diags->Report(diag::err_analyzer_config_invalid_input) << "model-path" 1155 << "a filename"; 1156 } 1157 1158 /// Generate a remark argument. This is an inverse of `ParseOptimizationRemark`. 1159 static void 1160 GenerateOptimizationRemark(SmallVectorImpl<const char *> &Args, 1161 CompilerInvocation::StringAllocator SA, 1162 OptSpecifier OptEQ, StringRef Name, 1163 const CodeGenOptions::OptRemark &Remark) { 1164 if (Remark.hasValidPattern()) { 1165 GenerateArg(Args, OptEQ, Remark.Pattern, SA); 1166 } else if (Remark.Kind == CodeGenOptions::RK_Enabled) { 1167 GenerateArg(Args, OPT_R_Joined, Name, SA); 1168 } else if (Remark.Kind == CodeGenOptions::RK_Disabled) { 1169 GenerateArg(Args, OPT_R_Joined, StringRef("no-") + Name, SA); 1170 } 1171 } 1172 1173 /// Parse a remark command line argument. It may be missing, disabled/enabled by 1174 /// '-R[no-]group' or specified with a regular expression by '-Rgroup=regexp'. 1175 /// On top of that, it can be disabled/enabled globally by '-R[no-]everything'. 1176 static CodeGenOptions::OptRemark 1177 ParseOptimizationRemark(DiagnosticsEngine &Diags, ArgList &Args, 1178 OptSpecifier OptEQ, StringRef Name) { 1179 CodeGenOptions::OptRemark Result; 1180 1181 auto InitializeResultPattern = [&Diags, &Args, &Result](const Arg *A, 1182 StringRef Pattern) { 1183 Result.Pattern = Pattern.str(); 1184 1185 std::string RegexError; 1186 Result.Regex = std::make_shared<llvm::Regex>(Result.Pattern); 1187 if (!Result.Regex->isValid(RegexError)) { 1188 Diags.Report(diag::err_drv_optimization_remark_pattern) 1189 << RegexError << A->getAsString(Args); 1190 return false; 1191 } 1192 1193 return true; 1194 }; 1195 1196 for (Arg *A : Args) { 1197 if (A->getOption().matches(OPT_R_Joined)) { 1198 StringRef Value = A->getValue(); 1199 1200 if (Value == Name) 1201 Result.Kind = CodeGenOptions::RK_Enabled; 1202 else if (Value == "everything") 1203 Result.Kind = CodeGenOptions::RK_EnabledEverything; 1204 else if (Value.split('-') == std::make_pair(StringRef("no"), Name)) 1205 Result.Kind = CodeGenOptions::RK_Disabled; 1206 else if (Value == "no-everything") 1207 Result.Kind = CodeGenOptions::RK_DisabledEverything; 1208 else 1209 continue; 1210 1211 if (Result.Kind == CodeGenOptions::RK_Disabled || 1212 Result.Kind == CodeGenOptions::RK_DisabledEverything) { 1213 Result.Pattern = ""; 1214 Result.Regex = nullptr; 1215 } else { 1216 InitializeResultPattern(A, ".*"); 1217 } 1218 } else if (A->getOption().matches(OptEQ)) { 1219 Result.Kind = CodeGenOptions::RK_WithPattern; 1220 if (!InitializeResultPattern(A, A->getValue())) 1221 return CodeGenOptions::OptRemark(); 1222 } 1223 } 1224 1225 return Result; 1226 } 1227 1228 static bool parseDiagnosticLevelMask(StringRef FlagName, 1229 const std::vector<std::string> &Levels, 1230 DiagnosticsEngine &Diags, 1231 DiagnosticLevelMask &M) { 1232 bool Success = true; 1233 for (const auto &Level : Levels) { 1234 DiagnosticLevelMask const PM = 1235 llvm::StringSwitch<DiagnosticLevelMask>(Level) 1236 .Case("note", DiagnosticLevelMask::Note) 1237 .Case("remark", DiagnosticLevelMask::Remark) 1238 .Case("warning", DiagnosticLevelMask::Warning) 1239 .Case("error", DiagnosticLevelMask::Error) 1240 .Default(DiagnosticLevelMask::None); 1241 if (PM == DiagnosticLevelMask::None) { 1242 Success = false; 1243 Diags.Report(diag::err_drv_invalid_value) << FlagName << Level; 1244 } 1245 M = M | PM; 1246 } 1247 return Success; 1248 } 1249 1250 static void parseSanitizerKinds(StringRef FlagName, 1251 const std::vector<std::string> &Sanitizers, 1252 DiagnosticsEngine &Diags, SanitizerSet &S) { 1253 for (const auto &Sanitizer : Sanitizers) { 1254 SanitizerMask K = parseSanitizerValue(Sanitizer, /*AllowGroups=*/false); 1255 if (K == SanitizerMask()) 1256 Diags.Report(diag::err_drv_invalid_value) << FlagName << Sanitizer; 1257 else 1258 S.set(K, true); 1259 } 1260 } 1261 1262 static SmallVector<StringRef, 4> serializeSanitizerKinds(SanitizerSet S) { 1263 SmallVector<StringRef, 4> Values; 1264 serializeSanitizerSet(S, Values); 1265 return Values; 1266 } 1267 1268 static void parseXRayInstrumentationBundle(StringRef FlagName, StringRef Bundle, 1269 ArgList &Args, DiagnosticsEngine &D, 1270 XRayInstrSet &S) { 1271 llvm::SmallVector<StringRef, 2> BundleParts; 1272 llvm::SplitString(Bundle, BundleParts, ","); 1273 for (const auto &B : BundleParts) { 1274 auto Mask = parseXRayInstrValue(B); 1275 if (Mask == XRayInstrKind::None) 1276 if (B != "none") 1277 D.Report(diag::err_drv_invalid_value) << FlagName << Bundle; 1278 else 1279 S.Mask = Mask; 1280 else if (Mask == XRayInstrKind::All) 1281 S.Mask = Mask; 1282 else 1283 S.set(Mask, true); 1284 } 1285 } 1286 1287 static std::string serializeXRayInstrumentationBundle(const XRayInstrSet &S) { 1288 llvm::SmallVector<StringRef, 2> BundleParts; 1289 serializeXRayInstrValue(S, BundleParts); 1290 std::string Buffer; 1291 llvm::raw_string_ostream OS(Buffer); 1292 llvm::interleave(BundleParts, OS, [&OS](StringRef Part) { OS << Part; }, ","); 1293 return Buffer; 1294 } 1295 1296 // Set the profile kind using fprofile-instrument-use-path. 1297 static void setPGOUseInstrumentor(CodeGenOptions &Opts, 1298 const Twine &ProfileName, 1299 DiagnosticsEngine &Diags) { 1300 auto ReaderOrErr = llvm::IndexedInstrProfReader::create(ProfileName); 1301 if (auto E = ReaderOrErr.takeError()) { 1302 unsigned DiagID = Diags.getCustomDiagID(DiagnosticsEngine::Error, 1303 "Error in reading profile %0: %1"); 1304 llvm::handleAllErrors(std::move(E), [&](const llvm::ErrorInfoBase &EI) { 1305 Diags.Report(DiagID) << ProfileName.str() << EI.message(); 1306 }); 1307 return; 1308 } 1309 std::unique_ptr<llvm::IndexedInstrProfReader> PGOReader = 1310 std::move(ReaderOrErr.get()); 1311 // Currently memprof profiles are only added at the IR level. Mark the profile 1312 // type as IR in that case as well and the subsequent matching needs to detect 1313 // which is available (might be one or both). 1314 if (PGOReader->isIRLevelProfile() || PGOReader->hasMemoryProfile()) { 1315 if (PGOReader->hasCSIRLevelProfile()) 1316 Opts.setProfileUse(CodeGenOptions::ProfileCSIRInstr); 1317 else 1318 Opts.setProfileUse(CodeGenOptions::ProfileIRInstr); 1319 } else 1320 Opts.setProfileUse(CodeGenOptions::ProfileClangInstr); 1321 } 1322 1323 void CompilerInvocation::GenerateCodeGenArgs( 1324 const CodeGenOptions &Opts, SmallVectorImpl<const char *> &Args, 1325 StringAllocator SA, const llvm::Triple &T, const std::string &OutputFile, 1326 const LangOptions *LangOpts) { 1327 const CodeGenOptions &CodeGenOpts = Opts; 1328 1329 if (Opts.OptimizationLevel == 0) 1330 GenerateArg(Args, OPT_O0, SA); 1331 else 1332 GenerateArg(Args, OPT_O, Twine(Opts.OptimizationLevel), SA); 1333 1334 #define CODEGEN_OPTION_WITH_MARSHALLING( \ 1335 PREFIX_TYPE, NAME, ID, KIND, GROUP, ALIAS, ALIASARGS, FLAGS, PARAM, \ 1336 HELPTEXT, METAVAR, VALUES, SPELLING, SHOULD_PARSE, ALWAYS_EMIT, KEYPATH, \ 1337 DEFAULT_VALUE, IMPLIED_CHECK, IMPLIED_VALUE, NORMALIZER, DENORMALIZER, \ 1338 MERGER, EXTRACTOR, TABLE_INDEX) \ 1339 GENERATE_OPTION_WITH_MARSHALLING( \ 1340 Args, SA, KIND, FLAGS, SPELLING, ALWAYS_EMIT, KEYPATH, DEFAULT_VALUE, \ 1341 IMPLIED_CHECK, IMPLIED_VALUE, DENORMALIZER, EXTRACTOR, TABLE_INDEX) 1342 #include "clang/Driver/Options.inc" 1343 #undef CODEGEN_OPTION_WITH_MARSHALLING 1344 1345 if (Opts.OptimizationLevel > 0) { 1346 if (Opts.Inlining == CodeGenOptions::NormalInlining) 1347 GenerateArg(Args, OPT_finline_functions, SA); 1348 else if (Opts.Inlining == CodeGenOptions::OnlyHintInlining) 1349 GenerateArg(Args, OPT_finline_hint_functions, SA); 1350 else if (Opts.Inlining == CodeGenOptions::OnlyAlwaysInlining) 1351 GenerateArg(Args, OPT_fno_inline, SA); 1352 } 1353 1354 if (Opts.DirectAccessExternalData && LangOpts->PICLevel != 0) 1355 GenerateArg(Args, OPT_fdirect_access_external_data, SA); 1356 else if (!Opts.DirectAccessExternalData && LangOpts->PICLevel == 0) 1357 GenerateArg(Args, OPT_fno_direct_access_external_data, SA); 1358 1359 Optional<StringRef> DebugInfoVal; 1360 switch (Opts.DebugInfo) { 1361 case codegenoptions::DebugLineTablesOnly: 1362 DebugInfoVal = "line-tables-only"; 1363 break; 1364 case codegenoptions::DebugDirectivesOnly: 1365 DebugInfoVal = "line-directives-only"; 1366 break; 1367 case codegenoptions::DebugInfoConstructor: 1368 DebugInfoVal = "constructor"; 1369 break; 1370 case codegenoptions::LimitedDebugInfo: 1371 DebugInfoVal = "limited"; 1372 break; 1373 case codegenoptions::FullDebugInfo: 1374 DebugInfoVal = "standalone"; 1375 break; 1376 case codegenoptions::UnusedTypeInfo: 1377 DebugInfoVal = "unused-types"; 1378 break; 1379 case codegenoptions::NoDebugInfo: // default value 1380 DebugInfoVal = None; 1381 break; 1382 case codegenoptions::LocTrackingOnly: // implied value 1383 DebugInfoVal = None; 1384 break; 1385 } 1386 if (DebugInfoVal) 1387 GenerateArg(Args, OPT_debug_info_kind_EQ, *DebugInfoVal, SA); 1388 1389 for (const auto &Prefix : Opts.DebugPrefixMap) 1390 GenerateArg(Args, OPT_fdebug_prefix_map_EQ, 1391 Prefix.first + "=" + Prefix.second, SA); 1392 1393 for (const auto &Prefix : Opts.CoveragePrefixMap) 1394 GenerateArg(Args, OPT_fcoverage_prefix_map_EQ, 1395 Prefix.first + "=" + Prefix.second, SA); 1396 1397 if (Opts.NewStructPathTBAA) 1398 GenerateArg(Args, OPT_new_struct_path_tbaa, SA); 1399 1400 if (Opts.OptimizeSize == 1) 1401 GenerateArg(Args, OPT_O, "s", SA); 1402 else if (Opts.OptimizeSize == 2) 1403 GenerateArg(Args, OPT_O, "z", SA); 1404 1405 // SimplifyLibCalls is set only in the absence of -fno-builtin and 1406 // -ffreestanding. We'll consider that when generating them. 1407 1408 // NoBuiltinFuncs are generated by LangOptions. 1409 1410 if (Opts.UnrollLoops && Opts.OptimizationLevel <= 1) 1411 GenerateArg(Args, OPT_funroll_loops, SA); 1412 else if (!Opts.UnrollLoops && Opts.OptimizationLevel > 1) 1413 GenerateArg(Args, OPT_fno_unroll_loops, SA); 1414 1415 if (!Opts.BinutilsVersion.empty()) 1416 GenerateArg(Args, OPT_fbinutils_version_EQ, Opts.BinutilsVersion, SA); 1417 1418 if (Opts.DebugNameTable == 1419 static_cast<unsigned>(llvm::DICompileUnit::DebugNameTableKind::GNU)) 1420 GenerateArg(Args, OPT_ggnu_pubnames, SA); 1421 else if (Opts.DebugNameTable == 1422 static_cast<unsigned>( 1423 llvm::DICompileUnit::DebugNameTableKind::Default)) 1424 GenerateArg(Args, OPT_gpubnames, SA); 1425 1426 auto TNK = Opts.getDebugSimpleTemplateNames(); 1427 if (TNK != codegenoptions::DebugTemplateNamesKind::Full) { 1428 if (TNK == codegenoptions::DebugTemplateNamesKind::Simple) 1429 GenerateArg(Args, OPT_gsimple_template_names_EQ, "simple", SA); 1430 else if (TNK == codegenoptions::DebugTemplateNamesKind::Mangled) 1431 GenerateArg(Args, OPT_gsimple_template_names_EQ, "mangled", SA); 1432 } 1433 // ProfileInstrumentUsePath is marshalled automatically, no need to generate 1434 // it or PGOUseInstrumentor. 1435 1436 if (Opts.TimePasses) { 1437 if (Opts.TimePassesPerRun) 1438 GenerateArg(Args, OPT_ftime_report_EQ, "per-pass-run", SA); 1439 else 1440 GenerateArg(Args, OPT_ftime_report, SA); 1441 } 1442 1443 if (Opts.PrepareForLTO && !Opts.PrepareForThinLTO) 1444 GenerateArg(Args, OPT_flto_EQ, "full", SA); 1445 1446 if (Opts.PrepareForThinLTO) 1447 GenerateArg(Args, OPT_flto_EQ, "thin", SA); 1448 1449 if (!Opts.ThinLTOIndexFile.empty()) 1450 GenerateArg(Args, OPT_fthinlto_index_EQ, Opts.ThinLTOIndexFile, SA); 1451 1452 if (Opts.SaveTempsFilePrefix == OutputFile) 1453 GenerateArg(Args, OPT_save_temps_EQ, "obj", SA); 1454 1455 StringRef MemProfileBasename("memprof.profraw"); 1456 if (!Opts.MemoryProfileOutput.empty()) { 1457 if (Opts.MemoryProfileOutput == MemProfileBasename) { 1458 GenerateArg(Args, OPT_fmemory_profile, SA); 1459 } else { 1460 size_t ArgLength = 1461 Opts.MemoryProfileOutput.size() - MemProfileBasename.size(); 1462 GenerateArg(Args, OPT_fmemory_profile_EQ, 1463 Opts.MemoryProfileOutput.substr(0, ArgLength), SA); 1464 } 1465 } 1466 1467 if (memcmp(Opts.CoverageVersion, "408*", 4) != 0) 1468 GenerateArg(Args, OPT_coverage_version_EQ, 1469 StringRef(Opts.CoverageVersion, 4), SA); 1470 1471 // TODO: Check if we need to generate arguments stored in CmdArgs. (Namely 1472 // '-fembed_bitcode', which does not map to any CompilerInvocation field and 1473 // won't be generated.) 1474 1475 if (Opts.XRayInstrumentationBundle.Mask != XRayInstrKind::All) { 1476 std::string InstrBundle = 1477 serializeXRayInstrumentationBundle(Opts.XRayInstrumentationBundle); 1478 if (!InstrBundle.empty()) 1479 GenerateArg(Args, OPT_fxray_instrumentation_bundle, InstrBundle, SA); 1480 } 1481 1482 if (Opts.CFProtectionReturn && Opts.CFProtectionBranch) 1483 GenerateArg(Args, OPT_fcf_protection_EQ, "full", SA); 1484 else if (Opts.CFProtectionReturn) 1485 GenerateArg(Args, OPT_fcf_protection_EQ, "return", SA); 1486 else if (Opts.CFProtectionBranch) 1487 GenerateArg(Args, OPT_fcf_protection_EQ, "branch", SA); 1488 1489 if (Opts.IBTSeal) 1490 GenerateArg(Args, OPT_mibt_seal, SA); 1491 1492 if (Opts.FunctionReturnThunks) 1493 GenerateArg(Args, OPT_mfunction_return_EQ, "thunk-extern", SA); 1494 1495 for (const auto &F : Opts.LinkBitcodeFiles) { 1496 bool Builtint = F.LinkFlags == llvm::Linker::Flags::LinkOnlyNeeded && 1497 F.PropagateAttrs && F.Internalize; 1498 GenerateArg(Args, 1499 Builtint ? OPT_mlink_builtin_bitcode : OPT_mlink_bitcode_file, 1500 F.Filename, SA); 1501 } 1502 1503 GenerateArg( 1504 Args, Opts.EmulatedTLS ? OPT_femulated_tls : OPT_fno_emulated_tls, SA); 1505 1506 if (Opts.FPDenormalMode != llvm::DenormalMode::getIEEE()) 1507 GenerateArg(Args, OPT_fdenormal_fp_math_EQ, Opts.FPDenormalMode.str(), SA); 1508 1509 if ((Opts.FPDenormalMode != Opts.FP32DenormalMode) || 1510 (Opts.FP32DenormalMode != llvm::DenormalMode::getIEEE())) 1511 GenerateArg(Args, OPT_fdenormal_fp_math_f32_EQ, Opts.FP32DenormalMode.str(), 1512 SA); 1513 1514 if (Opts.StructReturnConvention == CodeGenOptions::SRCK_OnStack) { 1515 OptSpecifier Opt = 1516 T.isPPC32() ? OPT_maix_struct_return : OPT_fpcc_struct_return; 1517 GenerateArg(Args, Opt, SA); 1518 } else if (Opts.StructReturnConvention == CodeGenOptions::SRCK_InRegs) { 1519 OptSpecifier Opt = 1520 T.isPPC32() ? OPT_msvr4_struct_return : OPT_freg_struct_return; 1521 GenerateArg(Args, Opt, SA); 1522 } 1523 1524 if (Opts.EnableAIXExtendedAltivecABI) 1525 GenerateArg(Args, OPT_mabi_EQ_vec_extabi, SA); 1526 1527 if (!Opts.OptRecordPasses.empty()) 1528 GenerateArg(Args, OPT_opt_record_passes, Opts.OptRecordPasses, SA); 1529 1530 if (!Opts.OptRecordFormat.empty()) 1531 GenerateArg(Args, OPT_opt_record_format, Opts.OptRecordFormat, SA); 1532 1533 GenerateOptimizationRemark(Args, SA, OPT_Rpass_EQ, "pass", 1534 Opts.OptimizationRemark); 1535 1536 GenerateOptimizationRemark(Args, SA, OPT_Rpass_missed_EQ, "pass-missed", 1537 Opts.OptimizationRemarkMissed); 1538 1539 GenerateOptimizationRemark(Args, SA, OPT_Rpass_analysis_EQ, "pass-analysis", 1540 Opts.OptimizationRemarkAnalysis); 1541 1542 GenerateArg(Args, OPT_fdiagnostics_hotness_threshold_EQ, 1543 Opts.DiagnosticsHotnessThreshold 1544 ? Twine(*Opts.DiagnosticsHotnessThreshold) 1545 : "auto", 1546 SA); 1547 1548 GenerateArg(Args, OPT_fdiagnostics_misexpect_tolerance_EQ, 1549 Twine(*Opts.DiagnosticsMisExpectTolerance), SA); 1550 1551 for (StringRef Sanitizer : serializeSanitizerKinds(Opts.SanitizeRecover)) 1552 GenerateArg(Args, OPT_fsanitize_recover_EQ, Sanitizer, SA); 1553 1554 for (StringRef Sanitizer : serializeSanitizerKinds(Opts.SanitizeTrap)) 1555 GenerateArg(Args, OPT_fsanitize_trap_EQ, Sanitizer, SA); 1556 1557 if (!Opts.EmitVersionIdentMetadata) 1558 GenerateArg(Args, OPT_Qn, SA); 1559 1560 switch (Opts.FiniteLoops) { 1561 case CodeGenOptions::FiniteLoopsKind::Language: 1562 break; 1563 case CodeGenOptions::FiniteLoopsKind::Always: 1564 GenerateArg(Args, OPT_ffinite_loops, SA); 1565 break; 1566 case CodeGenOptions::FiniteLoopsKind::Never: 1567 GenerateArg(Args, OPT_fno_finite_loops, SA); 1568 break; 1569 } 1570 } 1571 1572 bool CompilerInvocation::ParseCodeGenArgs(CodeGenOptions &Opts, ArgList &Args, 1573 InputKind IK, 1574 DiagnosticsEngine &Diags, 1575 const llvm::Triple &T, 1576 const std::string &OutputFile, 1577 const LangOptions &LangOptsRef) { 1578 unsigned NumErrorsBefore = Diags.getNumErrors(); 1579 1580 unsigned OptimizationLevel = getOptimizationLevel(Args, IK, Diags); 1581 // TODO: This could be done in Driver 1582 unsigned MaxOptLevel = 3; 1583 if (OptimizationLevel > MaxOptLevel) { 1584 // If the optimization level is not supported, fall back on the default 1585 // optimization 1586 Diags.Report(diag::warn_drv_optimization_value) 1587 << Args.getLastArg(OPT_O)->getAsString(Args) << "-O" << MaxOptLevel; 1588 OptimizationLevel = MaxOptLevel; 1589 } 1590 Opts.OptimizationLevel = OptimizationLevel; 1591 1592 // The key paths of codegen options defined in Options.td start with 1593 // "CodeGenOpts.". Let's provide the expected variable name and type. 1594 CodeGenOptions &CodeGenOpts = Opts; 1595 // Some codegen options depend on language options. Let's provide the expected 1596 // variable name and type. 1597 const LangOptions *LangOpts = &LangOptsRef; 1598 1599 #define CODEGEN_OPTION_WITH_MARSHALLING( \ 1600 PREFIX_TYPE, NAME, ID, KIND, GROUP, ALIAS, ALIASARGS, FLAGS, PARAM, \ 1601 HELPTEXT, METAVAR, VALUES, SPELLING, SHOULD_PARSE, ALWAYS_EMIT, KEYPATH, \ 1602 DEFAULT_VALUE, IMPLIED_CHECK, IMPLIED_VALUE, NORMALIZER, DENORMALIZER, \ 1603 MERGER, EXTRACTOR, TABLE_INDEX) \ 1604 PARSE_OPTION_WITH_MARSHALLING( \ 1605 Args, Diags, ID, FLAGS, PARAM, SHOULD_PARSE, KEYPATH, DEFAULT_VALUE, \ 1606 IMPLIED_CHECK, IMPLIED_VALUE, NORMALIZER, MERGER, TABLE_INDEX) 1607 #include "clang/Driver/Options.inc" 1608 #undef CODEGEN_OPTION_WITH_MARSHALLING 1609 1610 // At O0 we want to fully disable inlining outside of cases marked with 1611 // 'alwaysinline' that are required for correctness. 1612 if (Opts.OptimizationLevel == 0) { 1613 Opts.setInlining(CodeGenOptions::OnlyAlwaysInlining); 1614 } else if (const Arg *A = Args.getLastArg(options::OPT_finline_functions, 1615 options::OPT_finline_hint_functions, 1616 options::OPT_fno_inline_functions, 1617 options::OPT_fno_inline)) { 1618 // Explicit inlining flags can disable some or all inlining even at 1619 // optimization levels above zero. 1620 if (A->getOption().matches(options::OPT_finline_functions)) 1621 Opts.setInlining(CodeGenOptions::NormalInlining); 1622 else if (A->getOption().matches(options::OPT_finline_hint_functions)) 1623 Opts.setInlining(CodeGenOptions::OnlyHintInlining); 1624 else 1625 Opts.setInlining(CodeGenOptions::OnlyAlwaysInlining); 1626 } else { 1627 Opts.setInlining(CodeGenOptions::NormalInlining); 1628 } 1629 1630 // PIC defaults to -fno-direct-access-external-data while non-PIC defaults to 1631 // -fdirect-access-external-data. 1632 Opts.DirectAccessExternalData = 1633 Args.hasArg(OPT_fdirect_access_external_data) || 1634 (!Args.hasArg(OPT_fno_direct_access_external_data) && 1635 LangOpts->PICLevel == 0); 1636 1637 if (Arg *A = Args.getLastArg(OPT_debug_info_kind_EQ)) { 1638 unsigned Val = 1639 llvm::StringSwitch<unsigned>(A->getValue()) 1640 .Case("line-tables-only", codegenoptions::DebugLineTablesOnly) 1641 .Case("line-directives-only", codegenoptions::DebugDirectivesOnly) 1642 .Case("constructor", codegenoptions::DebugInfoConstructor) 1643 .Case("limited", codegenoptions::LimitedDebugInfo) 1644 .Case("standalone", codegenoptions::FullDebugInfo) 1645 .Case("unused-types", codegenoptions::UnusedTypeInfo) 1646 .Default(~0U); 1647 if (Val == ~0U) 1648 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) 1649 << A->getValue(); 1650 else 1651 Opts.setDebugInfo(static_cast<codegenoptions::DebugInfoKind>(Val)); 1652 } 1653 1654 // If -fuse-ctor-homing is set and limited debug info is already on, then use 1655 // constructor homing, and vice versa for -fno-use-ctor-homing. 1656 if (const Arg *A = 1657 Args.getLastArg(OPT_fuse_ctor_homing, OPT_fno_use_ctor_homing)) { 1658 if (A->getOption().matches(OPT_fuse_ctor_homing) && 1659 Opts.getDebugInfo() == codegenoptions::LimitedDebugInfo) 1660 Opts.setDebugInfo(codegenoptions::DebugInfoConstructor); 1661 if (A->getOption().matches(OPT_fno_use_ctor_homing) && 1662 Opts.getDebugInfo() == codegenoptions::DebugInfoConstructor) 1663 Opts.setDebugInfo(codegenoptions::LimitedDebugInfo); 1664 } 1665 1666 for (const auto &Arg : Args.getAllArgValues(OPT_fdebug_prefix_map_EQ)) { 1667 auto Split = StringRef(Arg).split('='); 1668 Opts.DebugPrefixMap.insert( 1669 {std::string(Split.first), std::string(Split.second)}); 1670 } 1671 1672 for (const auto &Arg : Args.getAllArgValues(OPT_fcoverage_prefix_map_EQ)) { 1673 auto Split = StringRef(Arg).split('='); 1674 Opts.CoveragePrefixMap.insert( 1675 {std::string(Split.first), std::string(Split.second)}); 1676 } 1677 1678 const llvm::Triple::ArchType DebugEntryValueArchs[] = { 1679 llvm::Triple::x86, llvm::Triple::x86_64, llvm::Triple::aarch64, 1680 llvm::Triple::arm, llvm::Triple::armeb, llvm::Triple::mips, 1681 llvm::Triple::mipsel, llvm::Triple::mips64, llvm::Triple::mips64el}; 1682 1683 if (Opts.OptimizationLevel > 0 && Opts.hasReducedDebugInfo() && 1684 llvm::is_contained(DebugEntryValueArchs, T.getArch())) 1685 Opts.EmitCallSiteInfo = true; 1686 1687 if (!Opts.EnableDIPreservationVerify && Opts.DIBugsReportFilePath.size()) { 1688 Diags.Report(diag::warn_ignoring_verify_debuginfo_preserve_export) 1689 << Opts.DIBugsReportFilePath; 1690 Opts.DIBugsReportFilePath = ""; 1691 } 1692 1693 Opts.NewStructPathTBAA = !Args.hasArg(OPT_no_struct_path_tbaa) && 1694 Args.hasArg(OPT_new_struct_path_tbaa); 1695 Opts.OptimizeSize = getOptimizationLevelSize(Args); 1696 Opts.SimplifyLibCalls = !LangOpts->NoBuiltin; 1697 if (Opts.SimplifyLibCalls) 1698 Opts.NoBuiltinFuncs = LangOpts->NoBuiltinFuncs; 1699 Opts.UnrollLoops = 1700 Args.hasFlag(OPT_funroll_loops, OPT_fno_unroll_loops, 1701 (Opts.OptimizationLevel > 1)); 1702 Opts.BinutilsVersion = 1703 std::string(Args.getLastArgValue(OPT_fbinutils_version_EQ)); 1704 1705 Opts.DebugNameTable = static_cast<unsigned>( 1706 Args.hasArg(OPT_ggnu_pubnames) 1707 ? llvm::DICompileUnit::DebugNameTableKind::GNU 1708 : Args.hasArg(OPT_gpubnames) 1709 ? llvm::DICompileUnit::DebugNameTableKind::Default 1710 : llvm::DICompileUnit::DebugNameTableKind::None); 1711 if (const Arg *A = Args.getLastArg(OPT_gsimple_template_names_EQ)) { 1712 StringRef Value = A->getValue(); 1713 if (Value != "simple" && Value != "mangled") 1714 Diags.Report(diag::err_drv_unsupported_option_argument) 1715 << A->getOption().getName() << A->getValue(); 1716 Opts.setDebugSimpleTemplateNames( 1717 StringRef(A->getValue()) == "simple" 1718 ? codegenoptions::DebugTemplateNamesKind::Simple 1719 : codegenoptions::DebugTemplateNamesKind::Mangled); 1720 } 1721 1722 if (!Opts.ProfileInstrumentUsePath.empty()) 1723 setPGOUseInstrumentor(Opts, Opts.ProfileInstrumentUsePath, Diags); 1724 1725 if (const Arg *A = Args.getLastArg(OPT_ftime_report, OPT_ftime_report_EQ)) { 1726 Opts.TimePasses = true; 1727 1728 // -ftime-report= is only for new pass manager. 1729 if (A->getOption().getID() == OPT_ftime_report_EQ) { 1730 StringRef Val = A->getValue(); 1731 if (Val == "per-pass") 1732 Opts.TimePassesPerRun = false; 1733 else if (Val == "per-pass-run") 1734 Opts.TimePassesPerRun = true; 1735 else 1736 Diags.Report(diag::err_drv_invalid_value) 1737 << A->getAsString(Args) << A->getValue(); 1738 } 1739 } 1740 1741 Opts.PrepareForLTO = false; 1742 Opts.PrepareForThinLTO = false; 1743 if (Arg *A = Args.getLastArg(OPT_flto_EQ)) { 1744 Opts.PrepareForLTO = true; 1745 StringRef S = A->getValue(); 1746 if (S == "thin") 1747 Opts.PrepareForThinLTO = true; 1748 else if (S != "full") 1749 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << S; 1750 } 1751 if (Arg *A = Args.getLastArg(OPT_fthinlto_index_EQ)) { 1752 if (IK.getLanguage() != Language::LLVM_IR) 1753 Diags.Report(diag::err_drv_argument_only_allowed_with) 1754 << A->getAsString(Args) << "-x ir"; 1755 Opts.ThinLTOIndexFile = 1756 std::string(Args.getLastArgValue(OPT_fthinlto_index_EQ)); 1757 } 1758 if (Arg *A = Args.getLastArg(OPT_save_temps_EQ)) 1759 Opts.SaveTempsFilePrefix = 1760 llvm::StringSwitch<std::string>(A->getValue()) 1761 .Case("obj", OutputFile) 1762 .Default(llvm::sys::path::filename(OutputFile).str()); 1763 1764 // The memory profile runtime appends the pid to make this name more unique. 1765 const char *MemProfileBasename = "memprof.profraw"; 1766 if (Args.hasArg(OPT_fmemory_profile_EQ)) { 1767 SmallString<128> Path( 1768 std::string(Args.getLastArgValue(OPT_fmemory_profile_EQ))); 1769 llvm::sys::path::append(Path, MemProfileBasename); 1770 Opts.MemoryProfileOutput = std::string(Path); 1771 } else if (Args.hasArg(OPT_fmemory_profile)) 1772 Opts.MemoryProfileOutput = MemProfileBasename; 1773 1774 memcpy(Opts.CoverageVersion, "408*", 4); 1775 if (Opts.EmitGcovArcs || Opts.EmitGcovNotes) { 1776 if (Args.hasArg(OPT_coverage_version_EQ)) { 1777 StringRef CoverageVersion = Args.getLastArgValue(OPT_coverage_version_EQ); 1778 if (CoverageVersion.size() != 4) { 1779 Diags.Report(diag::err_drv_invalid_value) 1780 << Args.getLastArg(OPT_coverage_version_EQ)->getAsString(Args) 1781 << CoverageVersion; 1782 } else { 1783 memcpy(Opts.CoverageVersion, CoverageVersion.data(), 4); 1784 } 1785 } 1786 } 1787 // FIXME: For backend options that are not yet recorded as function 1788 // attributes in the IR, keep track of them so we can embed them in a 1789 // separate data section and use them when building the bitcode. 1790 for (const auto &A : Args) { 1791 // Do not encode output and input. 1792 if (A->getOption().getID() == options::OPT_o || 1793 A->getOption().getID() == options::OPT_INPUT || 1794 A->getOption().getID() == options::OPT_x || 1795 A->getOption().getID() == options::OPT_fembed_bitcode || 1796 A->getOption().matches(options::OPT_W_Group)) 1797 continue; 1798 ArgStringList ASL; 1799 A->render(Args, ASL); 1800 for (const auto &arg : ASL) { 1801 StringRef ArgStr(arg); 1802 Opts.CmdArgs.insert(Opts.CmdArgs.end(), ArgStr.begin(), ArgStr.end()); 1803 // using \00 to separate each commandline options. 1804 Opts.CmdArgs.push_back('\0'); 1805 } 1806 } 1807 1808 auto XRayInstrBundles = 1809 Args.getAllArgValues(OPT_fxray_instrumentation_bundle); 1810 if (XRayInstrBundles.empty()) 1811 Opts.XRayInstrumentationBundle.Mask = XRayInstrKind::All; 1812 else 1813 for (const auto &A : XRayInstrBundles) 1814 parseXRayInstrumentationBundle("-fxray-instrumentation-bundle=", A, Args, 1815 Diags, Opts.XRayInstrumentationBundle); 1816 1817 if (const Arg *A = Args.getLastArg(OPT_fcf_protection_EQ)) { 1818 StringRef Name = A->getValue(); 1819 if (Name == "full") { 1820 Opts.CFProtectionReturn = 1; 1821 Opts.CFProtectionBranch = 1; 1822 } else if (Name == "return") 1823 Opts.CFProtectionReturn = 1; 1824 else if (Name == "branch") 1825 Opts.CFProtectionBranch = 1; 1826 else if (Name != "none") 1827 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Name; 1828 } 1829 1830 if (const Arg *A = Args.getLastArg(OPT_mfunction_return_EQ)) { 1831 auto Val = llvm::StringSwitch<llvm::FunctionReturnThunksKind>(A->getValue()) 1832 .Case("keep", llvm::FunctionReturnThunksKind::Keep) 1833 .Case("thunk-extern", llvm::FunctionReturnThunksKind::Extern) 1834 .Default(llvm::FunctionReturnThunksKind::Invalid); 1835 // SystemZ might want to add support for "expolines." 1836 if (!T.isX86()) 1837 Diags.Report(diag::err_drv_argument_not_allowed_with) 1838 << A->getSpelling() << T.getTriple(); 1839 else if (Val == llvm::FunctionReturnThunksKind::Invalid) 1840 Diags.Report(diag::err_drv_invalid_value) 1841 << A->getAsString(Args) << A->getValue(); 1842 else if (Val == llvm::FunctionReturnThunksKind::Extern && 1843 Args.getLastArgValue(OPT_mcmodel_EQ).equals("large")) 1844 Diags.Report(diag::err_drv_argument_not_allowed_with) 1845 << A->getAsString(Args) 1846 << Args.getLastArg(OPT_mcmodel_EQ)->getAsString(Args); 1847 else 1848 Opts.FunctionReturnThunks = static_cast<unsigned>(Val); 1849 } 1850 1851 if (Opts.PrepareForLTO && Args.hasArg(OPT_mibt_seal)) 1852 Opts.IBTSeal = 1; 1853 1854 for (auto *A : 1855 Args.filtered(OPT_mlink_bitcode_file, OPT_mlink_builtin_bitcode)) { 1856 CodeGenOptions::BitcodeFileToLink F; 1857 F.Filename = A->getValue(); 1858 if (A->getOption().matches(OPT_mlink_builtin_bitcode)) { 1859 F.LinkFlags = llvm::Linker::Flags::LinkOnlyNeeded; 1860 // When linking CUDA bitcode, propagate function attributes so that 1861 // e.g. libdevice gets fast-math attrs if we're building with fast-math. 1862 F.PropagateAttrs = true; 1863 F.Internalize = true; 1864 } 1865 Opts.LinkBitcodeFiles.push_back(F); 1866 } 1867 1868 if (!Args.getLastArg(OPT_femulated_tls) && 1869 !Args.getLastArg(OPT_fno_emulated_tls)) { 1870 Opts.EmulatedTLS = T.hasDefaultEmulatedTLS(); 1871 } 1872 1873 if (Arg *A = Args.getLastArg(OPT_ftlsmodel_EQ)) { 1874 if (T.isOSAIX()) { 1875 StringRef Name = A->getValue(); 1876 if (Name != "global-dynamic") 1877 Diags.Report(diag::err_aix_unsupported_tls_model) << Name; 1878 } 1879 } 1880 1881 if (Arg *A = Args.getLastArg(OPT_fdenormal_fp_math_EQ)) { 1882 StringRef Val = A->getValue(); 1883 Opts.FPDenormalMode = llvm::parseDenormalFPAttribute(Val); 1884 Opts.FP32DenormalMode = Opts.FPDenormalMode; 1885 if (!Opts.FPDenormalMode.isValid()) 1886 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Val; 1887 } 1888 1889 if (Arg *A = Args.getLastArg(OPT_fdenormal_fp_math_f32_EQ)) { 1890 StringRef Val = A->getValue(); 1891 Opts.FP32DenormalMode = llvm::parseDenormalFPAttribute(Val); 1892 if (!Opts.FP32DenormalMode.isValid()) 1893 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Val; 1894 } 1895 1896 // X86_32 has -fppc-struct-return and -freg-struct-return. 1897 // PPC32 has -maix-struct-return and -msvr4-struct-return. 1898 if (Arg *A = 1899 Args.getLastArg(OPT_fpcc_struct_return, OPT_freg_struct_return, 1900 OPT_maix_struct_return, OPT_msvr4_struct_return)) { 1901 // TODO: We might want to consider enabling these options on AIX in the 1902 // future. 1903 if (T.isOSAIX()) 1904 Diags.Report(diag::err_drv_unsupported_opt_for_target) 1905 << A->getSpelling() << T.str(); 1906 1907 const Option &O = A->getOption(); 1908 if (O.matches(OPT_fpcc_struct_return) || 1909 O.matches(OPT_maix_struct_return)) { 1910 Opts.setStructReturnConvention(CodeGenOptions::SRCK_OnStack); 1911 } else { 1912 assert(O.matches(OPT_freg_struct_return) || 1913 O.matches(OPT_msvr4_struct_return)); 1914 Opts.setStructReturnConvention(CodeGenOptions::SRCK_InRegs); 1915 } 1916 } 1917 1918 if (Arg *A = 1919 Args.getLastArg(OPT_mabi_EQ_vec_default, OPT_mabi_EQ_vec_extabi)) { 1920 if (!T.isOSAIX()) 1921 Diags.Report(diag::err_drv_unsupported_opt_for_target) 1922 << A->getSpelling() << T.str(); 1923 1924 const Option &O = A->getOption(); 1925 Opts.EnableAIXExtendedAltivecABI = O.matches(OPT_mabi_EQ_vec_extabi); 1926 } 1927 1928 if (Arg *A = Args.getLastArg(OPT_mabi_EQ_quadword_atomics)) { 1929 if (!T.isOSAIX() || T.isPPC32()) 1930 Diags.Report(diag::err_drv_unsupported_opt_for_target) 1931 << A->getSpelling() << T.str(); 1932 } 1933 1934 bool NeedLocTracking = false; 1935 1936 if (!Opts.OptRecordFile.empty()) 1937 NeedLocTracking = true; 1938 1939 if (Arg *A = Args.getLastArg(OPT_opt_record_passes)) { 1940 Opts.OptRecordPasses = A->getValue(); 1941 NeedLocTracking = true; 1942 } 1943 1944 if (Arg *A = Args.getLastArg(OPT_opt_record_format)) { 1945 Opts.OptRecordFormat = A->getValue(); 1946 NeedLocTracking = true; 1947 } 1948 1949 Opts.OptimizationRemark = 1950 ParseOptimizationRemark(Diags, Args, OPT_Rpass_EQ, "pass"); 1951 1952 Opts.OptimizationRemarkMissed = 1953 ParseOptimizationRemark(Diags, Args, OPT_Rpass_missed_EQ, "pass-missed"); 1954 1955 Opts.OptimizationRemarkAnalysis = ParseOptimizationRemark( 1956 Diags, Args, OPT_Rpass_analysis_EQ, "pass-analysis"); 1957 1958 NeedLocTracking |= Opts.OptimizationRemark.hasValidPattern() || 1959 Opts.OptimizationRemarkMissed.hasValidPattern() || 1960 Opts.OptimizationRemarkAnalysis.hasValidPattern(); 1961 1962 bool UsingSampleProfile = !Opts.SampleProfileFile.empty(); 1963 bool UsingProfile = UsingSampleProfile || 1964 (Opts.getProfileUse() != CodeGenOptions::ProfileNone); 1965 1966 if (Opts.DiagnosticsWithHotness && !UsingProfile && 1967 // An IR file will contain PGO as metadata 1968 IK.getLanguage() != Language::LLVM_IR) 1969 Diags.Report(diag::warn_drv_diagnostics_hotness_requires_pgo) 1970 << "-fdiagnostics-show-hotness"; 1971 1972 // Parse remarks hotness threshold. Valid value is either integer or 'auto'. 1973 if (auto *arg = 1974 Args.getLastArg(options::OPT_fdiagnostics_hotness_threshold_EQ)) { 1975 auto ResultOrErr = 1976 llvm::remarks::parseHotnessThresholdOption(arg->getValue()); 1977 1978 if (!ResultOrErr) { 1979 Diags.Report(diag::err_drv_invalid_diagnotics_hotness_threshold) 1980 << "-fdiagnostics-hotness-threshold="; 1981 } else { 1982 Opts.DiagnosticsHotnessThreshold = *ResultOrErr; 1983 if ((!Opts.DiagnosticsHotnessThreshold || 1984 Opts.DiagnosticsHotnessThreshold.value() > 0) && 1985 !UsingProfile) 1986 Diags.Report(diag::warn_drv_diagnostics_hotness_requires_pgo) 1987 << "-fdiagnostics-hotness-threshold="; 1988 } 1989 } 1990 1991 if (auto *arg = 1992 Args.getLastArg(options::OPT_fdiagnostics_misexpect_tolerance_EQ)) { 1993 auto ResultOrErr = parseToleranceOption(arg->getValue()); 1994 1995 if (!ResultOrErr) { 1996 Diags.Report(diag::err_drv_invalid_diagnotics_misexpect_tolerance) 1997 << "-fdiagnostics-misexpect-tolerance="; 1998 } else { 1999 Opts.DiagnosticsMisExpectTolerance = *ResultOrErr; 2000 if ((!Opts.DiagnosticsMisExpectTolerance || 2001 Opts.DiagnosticsMisExpectTolerance.value() > 0) && 2002 !UsingProfile) 2003 Diags.Report(diag::warn_drv_diagnostics_misexpect_requires_pgo) 2004 << "-fdiagnostics-misexpect-tolerance="; 2005 } 2006 } 2007 2008 // If the user requested to use a sample profile for PGO, then the 2009 // backend will need to track source location information so the profile 2010 // can be incorporated into the IR. 2011 if (UsingSampleProfile) 2012 NeedLocTracking = true; 2013 2014 if (!Opts.StackUsageOutput.empty()) 2015 NeedLocTracking = true; 2016 2017 // If the user requested a flag that requires source locations available in 2018 // the backend, make sure that the backend tracks source location information. 2019 if (NeedLocTracking && Opts.getDebugInfo() == codegenoptions::NoDebugInfo) 2020 Opts.setDebugInfo(codegenoptions::LocTrackingOnly); 2021 2022 // Parse -fsanitize-recover= arguments. 2023 // FIXME: Report unrecoverable sanitizers incorrectly specified here. 2024 parseSanitizerKinds("-fsanitize-recover=", 2025 Args.getAllArgValues(OPT_fsanitize_recover_EQ), Diags, 2026 Opts.SanitizeRecover); 2027 parseSanitizerKinds("-fsanitize-trap=", 2028 Args.getAllArgValues(OPT_fsanitize_trap_EQ), Diags, 2029 Opts.SanitizeTrap); 2030 2031 Opts.EmitVersionIdentMetadata = Args.hasFlag(OPT_Qy, OPT_Qn, true); 2032 2033 if (Args.hasArg(options::OPT_ffinite_loops)) 2034 Opts.FiniteLoops = CodeGenOptions::FiniteLoopsKind::Always; 2035 else if (Args.hasArg(options::OPT_fno_finite_loops)) 2036 Opts.FiniteLoops = CodeGenOptions::FiniteLoopsKind::Never; 2037 2038 Opts.EmitIEEENaNCompliantInsts = Args.hasFlag( 2039 options::OPT_mamdgpu_ieee, options::OPT_mno_amdgpu_ieee, true); 2040 if (!Opts.EmitIEEENaNCompliantInsts && !LangOptsRef.NoHonorNaNs) 2041 Diags.Report(diag::err_drv_amdgpu_ieee_without_no_honor_nans); 2042 2043 return Diags.getNumErrors() == NumErrorsBefore; 2044 } 2045 2046 static void 2047 GenerateDependencyOutputArgs(const DependencyOutputOptions &Opts, 2048 SmallVectorImpl<const char *> &Args, 2049 CompilerInvocation::StringAllocator SA) { 2050 const DependencyOutputOptions &DependencyOutputOpts = Opts; 2051 #define DEPENDENCY_OUTPUT_OPTION_WITH_MARSHALLING( \ 2052 PREFIX_TYPE, NAME, ID, KIND, GROUP, ALIAS, ALIASARGS, FLAGS, PARAM, \ 2053 HELPTEXT, METAVAR, VALUES, SPELLING, SHOULD_PARSE, ALWAYS_EMIT, KEYPATH, \ 2054 DEFAULT_VALUE, IMPLIED_CHECK, IMPLIED_VALUE, NORMALIZER, DENORMALIZER, \ 2055 MERGER, EXTRACTOR, TABLE_INDEX) \ 2056 GENERATE_OPTION_WITH_MARSHALLING( \ 2057 Args, SA, KIND, FLAGS, SPELLING, ALWAYS_EMIT, KEYPATH, DEFAULT_VALUE, \ 2058 IMPLIED_CHECK, IMPLIED_VALUE, DENORMALIZER, EXTRACTOR, TABLE_INDEX) 2059 #include "clang/Driver/Options.inc" 2060 #undef DEPENDENCY_OUTPUT_OPTION_WITH_MARSHALLING 2061 2062 if (Opts.ShowIncludesDest != ShowIncludesDestination::None) 2063 GenerateArg(Args, OPT_show_includes, SA); 2064 2065 for (const auto &Dep : Opts.ExtraDeps) { 2066 switch (Dep.second) { 2067 case EDK_SanitizeIgnorelist: 2068 // Sanitizer ignorelist arguments are generated from LanguageOptions. 2069 continue; 2070 case EDK_ModuleFile: 2071 // Module file arguments are generated from FrontendOptions and 2072 // HeaderSearchOptions. 2073 continue; 2074 case EDK_ProfileList: 2075 // Profile list arguments are generated from LanguageOptions via the 2076 // marshalling infrastructure. 2077 continue; 2078 case EDK_DepFileEntry: 2079 GenerateArg(Args, OPT_fdepfile_entry, Dep.first, SA); 2080 break; 2081 } 2082 } 2083 } 2084 2085 static bool ParseDependencyOutputArgs(DependencyOutputOptions &Opts, 2086 ArgList &Args, DiagnosticsEngine &Diags, 2087 frontend::ActionKind Action, 2088 bool ShowLineMarkers) { 2089 unsigned NumErrorsBefore = Diags.getNumErrors(); 2090 2091 DependencyOutputOptions &DependencyOutputOpts = Opts; 2092 #define DEPENDENCY_OUTPUT_OPTION_WITH_MARSHALLING( \ 2093 PREFIX_TYPE, NAME, ID, KIND, GROUP, ALIAS, ALIASARGS, FLAGS, PARAM, \ 2094 HELPTEXT, METAVAR, VALUES, SPELLING, SHOULD_PARSE, ALWAYS_EMIT, KEYPATH, \ 2095 DEFAULT_VALUE, IMPLIED_CHECK, IMPLIED_VALUE, NORMALIZER, DENORMALIZER, \ 2096 MERGER, EXTRACTOR, TABLE_INDEX) \ 2097 PARSE_OPTION_WITH_MARSHALLING( \ 2098 Args, Diags, ID, FLAGS, PARAM, SHOULD_PARSE, KEYPATH, DEFAULT_VALUE, \ 2099 IMPLIED_CHECK, IMPLIED_VALUE, NORMALIZER, MERGER, TABLE_INDEX) 2100 #include "clang/Driver/Options.inc" 2101 #undef DEPENDENCY_OUTPUT_OPTION_WITH_MARSHALLING 2102 2103 if (Args.hasArg(OPT_show_includes)) { 2104 // Writing both /showIncludes and preprocessor output to stdout 2105 // would produce interleaved output, so use stderr for /showIncludes. 2106 // This behaves the same as cl.exe, when /E, /EP or /P are passed. 2107 if (Action == frontend::PrintPreprocessedInput || !ShowLineMarkers) 2108 Opts.ShowIncludesDest = ShowIncludesDestination::Stderr; 2109 else 2110 Opts.ShowIncludesDest = ShowIncludesDestination::Stdout; 2111 } else { 2112 Opts.ShowIncludesDest = ShowIncludesDestination::None; 2113 } 2114 2115 // Add sanitizer ignorelists as extra dependencies. 2116 // They won't be discovered by the regular preprocessor, so 2117 // we let make / ninja to know about this implicit dependency. 2118 if (!Args.hasArg(OPT_fno_sanitize_ignorelist)) { 2119 for (const auto *A : Args.filtered(OPT_fsanitize_ignorelist_EQ)) { 2120 StringRef Val = A->getValue(); 2121 if (!Val.contains('=')) 2122 Opts.ExtraDeps.emplace_back(std::string(Val), EDK_SanitizeIgnorelist); 2123 } 2124 if (Opts.IncludeSystemHeaders) { 2125 for (const auto *A : Args.filtered(OPT_fsanitize_system_ignorelist_EQ)) { 2126 StringRef Val = A->getValue(); 2127 if (!Val.contains('=')) 2128 Opts.ExtraDeps.emplace_back(std::string(Val), EDK_SanitizeIgnorelist); 2129 } 2130 } 2131 } 2132 2133 // -fprofile-list= dependencies. 2134 for (const auto &Filename : Args.getAllArgValues(OPT_fprofile_list_EQ)) 2135 Opts.ExtraDeps.emplace_back(Filename, EDK_ProfileList); 2136 2137 // Propagate the extra dependencies. 2138 for (const auto *A : Args.filtered(OPT_fdepfile_entry)) 2139 Opts.ExtraDeps.emplace_back(A->getValue(), EDK_DepFileEntry); 2140 2141 // Only the -fmodule-file=<file> form. 2142 for (const auto *A : Args.filtered(OPT_fmodule_file)) { 2143 StringRef Val = A->getValue(); 2144 if (!Val.contains('=')) 2145 Opts.ExtraDeps.emplace_back(std::string(Val), EDK_ModuleFile); 2146 } 2147 2148 return Diags.getNumErrors() == NumErrorsBefore; 2149 } 2150 2151 static bool parseShowColorsArgs(const ArgList &Args, bool DefaultColor) { 2152 // Color diagnostics default to auto ("on" if terminal supports) in the driver 2153 // but default to off in cc1, needing an explicit OPT_fdiagnostics_color. 2154 // Support both clang's -f[no-]color-diagnostics and gcc's 2155 // -f[no-]diagnostics-colors[=never|always|auto]. 2156 enum { 2157 Colors_On, 2158 Colors_Off, 2159 Colors_Auto 2160 } ShowColors = DefaultColor ? Colors_Auto : Colors_Off; 2161 for (auto *A : Args) { 2162 const Option &O = A->getOption(); 2163 if (O.matches(options::OPT_fcolor_diagnostics)) { 2164 ShowColors = Colors_On; 2165 } else if (O.matches(options::OPT_fno_color_diagnostics)) { 2166 ShowColors = Colors_Off; 2167 } else if (O.matches(options::OPT_fdiagnostics_color_EQ)) { 2168 StringRef Value(A->getValue()); 2169 if (Value == "always") 2170 ShowColors = Colors_On; 2171 else if (Value == "never") 2172 ShowColors = Colors_Off; 2173 else if (Value == "auto") 2174 ShowColors = Colors_Auto; 2175 } 2176 } 2177 return ShowColors == Colors_On || 2178 (ShowColors == Colors_Auto && 2179 llvm::sys::Process::StandardErrHasColors()); 2180 } 2181 2182 static bool checkVerifyPrefixes(const std::vector<std::string> &VerifyPrefixes, 2183 DiagnosticsEngine &Diags) { 2184 bool Success = true; 2185 for (const auto &Prefix : VerifyPrefixes) { 2186 // Every prefix must start with a letter and contain only alphanumeric 2187 // characters, hyphens, and underscores. 2188 auto BadChar = llvm::find_if(Prefix, [](char C) { 2189 return !isAlphanumeric(C) && C != '-' && C != '_'; 2190 }); 2191 if (BadChar != Prefix.end() || !isLetter(Prefix[0])) { 2192 Success = false; 2193 Diags.Report(diag::err_drv_invalid_value) << "-verify=" << Prefix; 2194 Diags.Report(diag::note_drv_verify_prefix_spelling); 2195 } 2196 } 2197 return Success; 2198 } 2199 2200 static void GenerateFileSystemArgs(const FileSystemOptions &Opts, 2201 SmallVectorImpl<const char *> &Args, 2202 CompilerInvocation::StringAllocator SA) { 2203 const FileSystemOptions &FileSystemOpts = Opts; 2204 2205 #define FILE_SYSTEM_OPTION_WITH_MARSHALLING( \ 2206 PREFIX_TYPE, NAME, ID, KIND, GROUP, ALIAS, ALIASARGS, FLAGS, PARAM, \ 2207 HELPTEXT, METAVAR, VALUES, SPELLING, SHOULD_PARSE, ALWAYS_EMIT, KEYPATH, \ 2208 DEFAULT_VALUE, IMPLIED_CHECK, IMPLIED_VALUE, NORMALIZER, DENORMALIZER, \ 2209 MERGER, EXTRACTOR, TABLE_INDEX) \ 2210 GENERATE_OPTION_WITH_MARSHALLING( \ 2211 Args, SA, KIND, FLAGS, SPELLING, ALWAYS_EMIT, KEYPATH, DEFAULT_VALUE, \ 2212 IMPLIED_CHECK, IMPLIED_VALUE, DENORMALIZER, EXTRACTOR, TABLE_INDEX) 2213 #include "clang/Driver/Options.inc" 2214 #undef FILE_SYSTEM_OPTION_WITH_MARSHALLING 2215 } 2216 2217 static bool ParseFileSystemArgs(FileSystemOptions &Opts, const ArgList &Args, 2218 DiagnosticsEngine &Diags) { 2219 unsigned NumErrorsBefore = Diags.getNumErrors(); 2220 2221 FileSystemOptions &FileSystemOpts = Opts; 2222 2223 #define FILE_SYSTEM_OPTION_WITH_MARSHALLING( \ 2224 PREFIX_TYPE, NAME, ID, KIND, GROUP, ALIAS, ALIASARGS, FLAGS, PARAM, \ 2225 HELPTEXT, METAVAR, VALUES, SPELLING, SHOULD_PARSE, ALWAYS_EMIT, KEYPATH, \ 2226 DEFAULT_VALUE, IMPLIED_CHECK, IMPLIED_VALUE, NORMALIZER, DENORMALIZER, \ 2227 MERGER, EXTRACTOR, TABLE_INDEX) \ 2228 PARSE_OPTION_WITH_MARSHALLING( \ 2229 Args, Diags, ID, FLAGS, PARAM, SHOULD_PARSE, KEYPATH, DEFAULT_VALUE, \ 2230 IMPLIED_CHECK, IMPLIED_VALUE, NORMALIZER, MERGER, TABLE_INDEX) 2231 #include "clang/Driver/Options.inc" 2232 #undef FILE_SYSTEM_OPTION_WITH_MARSHALLING 2233 2234 return Diags.getNumErrors() == NumErrorsBefore; 2235 } 2236 2237 static void GenerateMigratorArgs(const MigratorOptions &Opts, 2238 SmallVectorImpl<const char *> &Args, 2239 CompilerInvocation::StringAllocator SA) { 2240 const MigratorOptions &MigratorOpts = Opts; 2241 #define MIGRATOR_OPTION_WITH_MARSHALLING( \ 2242 PREFIX_TYPE, NAME, ID, KIND, GROUP, ALIAS, ALIASARGS, FLAGS, PARAM, \ 2243 HELPTEXT, METAVAR, VALUES, SPELLING, SHOULD_PARSE, ALWAYS_EMIT, KEYPATH, \ 2244 DEFAULT_VALUE, IMPLIED_CHECK, IMPLIED_VALUE, NORMALIZER, DENORMALIZER, \ 2245 MERGER, EXTRACTOR, TABLE_INDEX) \ 2246 GENERATE_OPTION_WITH_MARSHALLING( \ 2247 Args, SA, KIND, FLAGS, SPELLING, ALWAYS_EMIT, KEYPATH, DEFAULT_VALUE, \ 2248 IMPLIED_CHECK, IMPLIED_VALUE, DENORMALIZER, EXTRACTOR, TABLE_INDEX) 2249 #include "clang/Driver/Options.inc" 2250 #undef MIGRATOR_OPTION_WITH_MARSHALLING 2251 } 2252 2253 static bool ParseMigratorArgs(MigratorOptions &Opts, const ArgList &Args, 2254 DiagnosticsEngine &Diags) { 2255 unsigned NumErrorsBefore = Diags.getNumErrors(); 2256 2257 MigratorOptions &MigratorOpts = Opts; 2258 2259 #define MIGRATOR_OPTION_WITH_MARSHALLING( \ 2260 PREFIX_TYPE, NAME, ID, KIND, GROUP, ALIAS, ALIASARGS, FLAGS, PARAM, \ 2261 HELPTEXT, METAVAR, VALUES, SPELLING, SHOULD_PARSE, ALWAYS_EMIT, KEYPATH, \ 2262 DEFAULT_VALUE, IMPLIED_CHECK, IMPLIED_VALUE, NORMALIZER, DENORMALIZER, \ 2263 MERGER, EXTRACTOR, TABLE_INDEX) \ 2264 PARSE_OPTION_WITH_MARSHALLING( \ 2265 Args, Diags, ID, FLAGS, PARAM, SHOULD_PARSE, KEYPATH, DEFAULT_VALUE, \ 2266 IMPLIED_CHECK, IMPLIED_VALUE, NORMALIZER, MERGER, TABLE_INDEX) 2267 #include "clang/Driver/Options.inc" 2268 #undef MIGRATOR_OPTION_WITH_MARSHALLING 2269 2270 return Diags.getNumErrors() == NumErrorsBefore; 2271 } 2272 2273 void CompilerInvocation::GenerateDiagnosticArgs( 2274 const DiagnosticOptions &Opts, SmallVectorImpl<const char *> &Args, 2275 StringAllocator SA, bool DefaultDiagColor) { 2276 const DiagnosticOptions *DiagnosticOpts = &Opts; 2277 #define DIAG_OPTION_WITH_MARSHALLING( \ 2278 PREFIX_TYPE, NAME, ID, KIND, GROUP, ALIAS, ALIASARGS, FLAGS, PARAM, \ 2279 HELPTEXT, METAVAR, VALUES, SPELLING, SHOULD_PARSE, ALWAYS_EMIT, KEYPATH, \ 2280 DEFAULT_VALUE, IMPLIED_CHECK, IMPLIED_VALUE, NORMALIZER, DENORMALIZER, \ 2281 MERGER, EXTRACTOR, TABLE_INDEX) \ 2282 GENERATE_OPTION_WITH_MARSHALLING( \ 2283 Args, SA, KIND, FLAGS, SPELLING, ALWAYS_EMIT, KEYPATH, DEFAULT_VALUE, \ 2284 IMPLIED_CHECK, IMPLIED_VALUE, DENORMALIZER, EXTRACTOR, TABLE_INDEX) 2285 #include "clang/Driver/Options.inc" 2286 #undef DIAG_OPTION_WITH_MARSHALLING 2287 2288 if (!Opts.DiagnosticSerializationFile.empty()) 2289 GenerateArg(Args, OPT_diagnostic_serialized_file, 2290 Opts.DiagnosticSerializationFile, SA); 2291 2292 if (Opts.ShowColors) 2293 GenerateArg(Args, OPT_fcolor_diagnostics, SA); 2294 2295 if (Opts.VerifyDiagnostics && 2296 llvm::is_contained(Opts.VerifyPrefixes, "expected")) 2297 GenerateArg(Args, OPT_verify, SA); 2298 2299 for (const auto &Prefix : Opts.VerifyPrefixes) 2300 if (Prefix != "expected") 2301 GenerateArg(Args, OPT_verify_EQ, Prefix, SA); 2302 2303 DiagnosticLevelMask VIU = Opts.getVerifyIgnoreUnexpected(); 2304 if (VIU == DiagnosticLevelMask::None) { 2305 // This is the default, don't generate anything. 2306 } else if (VIU == DiagnosticLevelMask::All) { 2307 GenerateArg(Args, OPT_verify_ignore_unexpected, SA); 2308 } else { 2309 if (static_cast<unsigned>(VIU & DiagnosticLevelMask::Note) != 0) 2310 GenerateArg(Args, OPT_verify_ignore_unexpected_EQ, "note", SA); 2311 if (static_cast<unsigned>(VIU & DiagnosticLevelMask::Remark) != 0) 2312 GenerateArg(Args, OPT_verify_ignore_unexpected_EQ, "remark", SA); 2313 if (static_cast<unsigned>(VIU & DiagnosticLevelMask::Warning) != 0) 2314 GenerateArg(Args, OPT_verify_ignore_unexpected_EQ, "warning", SA); 2315 if (static_cast<unsigned>(VIU & DiagnosticLevelMask::Error) != 0) 2316 GenerateArg(Args, OPT_verify_ignore_unexpected_EQ, "error", SA); 2317 } 2318 2319 for (const auto &Warning : Opts.Warnings) { 2320 // This option is automatically generated from UndefPrefixes. 2321 if (Warning == "undef-prefix") 2322 continue; 2323 Args.push_back(SA(StringRef("-W") + Warning)); 2324 } 2325 2326 for (const auto &Remark : Opts.Remarks) { 2327 // These arguments are generated from OptimizationRemark fields of 2328 // CodeGenOptions. 2329 StringRef IgnoredRemarks[] = {"pass", "no-pass", 2330 "pass-analysis", "no-pass-analysis", 2331 "pass-missed", "no-pass-missed"}; 2332 if (llvm::is_contained(IgnoredRemarks, Remark)) 2333 continue; 2334 2335 Args.push_back(SA(StringRef("-R") + Remark)); 2336 } 2337 } 2338 2339 std::unique_ptr<DiagnosticOptions> 2340 clang::CreateAndPopulateDiagOpts(ArrayRef<const char *> Argv) { 2341 auto DiagOpts = std::make_unique<DiagnosticOptions>(); 2342 unsigned MissingArgIndex, MissingArgCount; 2343 InputArgList Args = getDriverOptTable().ParseArgs( 2344 Argv.slice(1), MissingArgIndex, MissingArgCount); 2345 // We ignore MissingArgCount and the return value of ParseDiagnosticArgs. 2346 // Any errors that would be diagnosed here will also be diagnosed later, 2347 // when the DiagnosticsEngine actually exists. 2348 (void)ParseDiagnosticArgs(*DiagOpts, Args); 2349 return DiagOpts; 2350 } 2351 2352 bool clang::ParseDiagnosticArgs(DiagnosticOptions &Opts, ArgList &Args, 2353 DiagnosticsEngine *Diags, 2354 bool DefaultDiagColor) { 2355 Optional<DiagnosticsEngine> IgnoringDiags; 2356 if (!Diags) { 2357 IgnoringDiags.emplace(new DiagnosticIDs(), new DiagnosticOptions(), 2358 new IgnoringDiagConsumer()); 2359 Diags = &*IgnoringDiags; 2360 } 2361 2362 unsigned NumErrorsBefore = Diags->getNumErrors(); 2363 2364 // The key paths of diagnostic options defined in Options.td start with 2365 // "DiagnosticOpts->". Let's provide the expected variable name and type. 2366 DiagnosticOptions *DiagnosticOpts = &Opts; 2367 2368 #define DIAG_OPTION_WITH_MARSHALLING( \ 2369 PREFIX_TYPE, NAME, ID, KIND, GROUP, ALIAS, ALIASARGS, FLAGS, PARAM, \ 2370 HELPTEXT, METAVAR, VALUES, SPELLING, SHOULD_PARSE, ALWAYS_EMIT, KEYPATH, \ 2371 DEFAULT_VALUE, IMPLIED_CHECK, IMPLIED_VALUE, NORMALIZER, DENORMALIZER, \ 2372 MERGER, EXTRACTOR, TABLE_INDEX) \ 2373 PARSE_OPTION_WITH_MARSHALLING( \ 2374 Args, *Diags, ID, FLAGS, PARAM, SHOULD_PARSE, KEYPATH, DEFAULT_VALUE, \ 2375 IMPLIED_CHECK, IMPLIED_VALUE, NORMALIZER, MERGER, TABLE_INDEX) 2376 #include "clang/Driver/Options.inc" 2377 #undef DIAG_OPTION_WITH_MARSHALLING 2378 2379 llvm::sys::Process::UseANSIEscapeCodes(Opts.UseANSIEscapeCodes); 2380 2381 if (Arg *A = 2382 Args.getLastArg(OPT_diagnostic_serialized_file, OPT__serialize_diags)) 2383 Opts.DiagnosticSerializationFile = A->getValue(); 2384 Opts.ShowColors = parseShowColorsArgs(Args, DefaultDiagColor); 2385 2386 Opts.VerifyDiagnostics = Args.hasArg(OPT_verify) || Args.hasArg(OPT_verify_EQ); 2387 Opts.VerifyPrefixes = Args.getAllArgValues(OPT_verify_EQ); 2388 if (Args.hasArg(OPT_verify)) 2389 Opts.VerifyPrefixes.push_back("expected"); 2390 // Keep VerifyPrefixes in its original order for the sake of diagnostics, and 2391 // then sort it to prepare for fast lookup using std::binary_search. 2392 if (!checkVerifyPrefixes(Opts.VerifyPrefixes, *Diags)) 2393 Opts.VerifyDiagnostics = false; 2394 else 2395 llvm::sort(Opts.VerifyPrefixes); 2396 DiagnosticLevelMask DiagMask = DiagnosticLevelMask::None; 2397 parseDiagnosticLevelMask( 2398 "-verify-ignore-unexpected=", 2399 Args.getAllArgValues(OPT_verify_ignore_unexpected_EQ), *Diags, DiagMask); 2400 if (Args.hasArg(OPT_verify_ignore_unexpected)) 2401 DiagMask = DiagnosticLevelMask::All; 2402 Opts.setVerifyIgnoreUnexpected(DiagMask); 2403 if (Opts.TabStop == 0 || Opts.TabStop > DiagnosticOptions::MaxTabStop) { 2404 Opts.TabStop = DiagnosticOptions::DefaultTabStop; 2405 Diags->Report(diag::warn_ignoring_ftabstop_value) 2406 << Opts.TabStop << DiagnosticOptions::DefaultTabStop; 2407 } 2408 2409 addDiagnosticArgs(Args, OPT_W_Group, OPT_W_value_Group, Opts.Warnings); 2410 addDiagnosticArgs(Args, OPT_R_Group, OPT_R_value_Group, Opts.Remarks); 2411 2412 return Diags->getNumErrors() == NumErrorsBefore; 2413 } 2414 2415 /// Parse the argument to the -ftest-module-file-extension 2416 /// command-line argument. 2417 /// 2418 /// \returns true on error, false on success. 2419 static bool parseTestModuleFileExtensionArg(StringRef Arg, 2420 std::string &BlockName, 2421 unsigned &MajorVersion, 2422 unsigned &MinorVersion, 2423 bool &Hashed, 2424 std::string &UserInfo) { 2425 SmallVector<StringRef, 5> Args; 2426 Arg.split(Args, ':', 5); 2427 if (Args.size() < 5) 2428 return true; 2429 2430 BlockName = std::string(Args[0]); 2431 if (Args[1].getAsInteger(10, MajorVersion)) return true; 2432 if (Args[2].getAsInteger(10, MinorVersion)) return true; 2433 if (Args[3].getAsInteger(2, Hashed)) return true; 2434 if (Args.size() > 4) 2435 UserInfo = std::string(Args[4]); 2436 return false; 2437 } 2438 2439 /// Return a table that associates command line option specifiers with the 2440 /// frontend action. Note: The pair {frontend::PluginAction, OPT_plugin} is 2441 /// intentionally missing, as this case is handled separately from other 2442 /// frontend options. 2443 static const auto &getFrontendActionTable() { 2444 static const std::pair<frontend::ActionKind, unsigned> Table[] = { 2445 {frontend::ASTDeclList, OPT_ast_list}, 2446 2447 {frontend::ASTDump, OPT_ast_dump_all_EQ}, 2448 {frontend::ASTDump, OPT_ast_dump_all}, 2449 {frontend::ASTDump, OPT_ast_dump_EQ}, 2450 {frontend::ASTDump, OPT_ast_dump}, 2451 {frontend::ASTDump, OPT_ast_dump_lookups}, 2452 {frontend::ASTDump, OPT_ast_dump_decl_types}, 2453 2454 {frontend::ASTPrint, OPT_ast_print}, 2455 {frontend::ASTView, OPT_ast_view}, 2456 {frontend::DumpCompilerOptions, OPT_compiler_options_dump}, 2457 {frontend::DumpRawTokens, OPT_dump_raw_tokens}, 2458 {frontend::DumpTokens, OPT_dump_tokens}, 2459 {frontend::EmitAssembly, OPT_S}, 2460 {frontend::EmitBC, OPT_emit_llvm_bc}, 2461 {frontend::EmitHTML, OPT_emit_html}, 2462 {frontend::EmitLLVM, OPT_emit_llvm}, 2463 {frontend::EmitLLVMOnly, OPT_emit_llvm_only}, 2464 {frontend::EmitCodeGenOnly, OPT_emit_codegen_only}, 2465 {frontend::EmitObj, OPT_emit_obj}, 2466 {frontend::ExtractAPI, OPT_extract_api}, 2467 2468 {frontend::FixIt, OPT_fixit_EQ}, 2469 {frontend::FixIt, OPT_fixit}, 2470 2471 {frontend::GenerateModule, OPT_emit_module}, 2472 {frontend::GenerateModuleInterface, OPT_emit_module_interface}, 2473 {frontend::GenerateHeaderModule, OPT_emit_header_module}, 2474 {frontend::GenerateHeaderUnit, OPT_emit_header_unit}, 2475 {frontend::GeneratePCH, OPT_emit_pch}, 2476 {frontend::GenerateInterfaceStubs, OPT_emit_interface_stubs}, 2477 {frontend::InitOnly, OPT_init_only}, 2478 {frontend::ParseSyntaxOnly, OPT_fsyntax_only}, 2479 {frontend::ModuleFileInfo, OPT_module_file_info}, 2480 {frontend::VerifyPCH, OPT_verify_pch}, 2481 {frontend::PrintPreamble, OPT_print_preamble}, 2482 {frontend::PrintPreprocessedInput, OPT_E}, 2483 {frontend::TemplightDump, OPT_templight_dump}, 2484 {frontend::RewriteMacros, OPT_rewrite_macros}, 2485 {frontend::RewriteObjC, OPT_rewrite_objc}, 2486 {frontend::RewriteTest, OPT_rewrite_test}, 2487 {frontend::RunAnalysis, OPT_analyze}, 2488 {frontend::MigrateSource, OPT_migrate}, 2489 {frontend::RunPreprocessorOnly, OPT_Eonly}, 2490 {frontend::PrintDependencyDirectivesSourceMinimizerOutput, 2491 OPT_print_dependency_directives_minimized_source}, 2492 }; 2493 2494 return Table; 2495 } 2496 2497 /// Maps command line option to frontend action. 2498 static Optional<frontend::ActionKind> getFrontendAction(OptSpecifier &Opt) { 2499 for (const auto &ActionOpt : getFrontendActionTable()) 2500 if (ActionOpt.second == Opt.getID()) 2501 return ActionOpt.first; 2502 2503 return None; 2504 } 2505 2506 /// Maps frontend action to command line option. 2507 static Optional<OptSpecifier> 2508 getProgramActionOpt(frontend::ActionKind ProgramAction) { 2509 for (const auto &ActionOpt : getFrontendActionTable()) 2510 if (ActionOpt.first == ProgramAction) 2511 return OptSpecifier(ActionOpt.second); 2512 2513 return None; 2514 } 2515 2516 static void GenerateFrontendArgs(const FrontendOptions &Opts, 2517 SmallVectorImpl<const char *> &Args, 2518 CompilerInvocation::StringAllocator SA, 2519 bool IsHeader) { 2520 const FrontendOptions &FrontendOpts = Opts; 2521 #define FRONTEND_OPTION_WITH_MARSHALLING( \ 2522 PREFIX_TYPE, NAME, ID, KIND, GROUP, ALIAS, ALIASARGS, FLAGS, PARAM, \ 2523 HELPTEXT, METAVAR, VALUES, SPELLING, SHOULD_PARSE, ALWAYS_EMIT, KEYPATH, \ 2524 DEFAULT_VALUE, IMPLIED_CHECK, IMPLIED_VALUE, NORMALIZER, DENORMALIZER, \ 2525 MERGER, EXTRACTOR, TABLE_INDEX) \ 2526 GENERATE_OPTION_WITH_MARSHALLING( \ 2527 Args, SA, KIND, FLAGS, SPELLING, ALWAYS_EMIT, KEYPATH, DEFAULT_VALUE, \ 2528 IMPLIED_CHECK, IMPLIED_VALUE, DENORMALIZER, EXTRACTOR, TABLE_INDEX) 2529 #include "clang/Driver/Options.inc" 2530 #undef FRONTEND_OPTION_WITH_MARSHALLING 2531 2532 Optional<OptSpecifier> ProgramActionOpt = 2533 getProgramActionOpt(Opts.ProgramAction); 2534 2535 // Generating a simple flag covers most frontend actions. 2536 std::function<void()> GenerateProgramAction = [&]() { 2537 GenerateArg(Args, *ProgramActionOpt, SA); 2538 }; 2539 2540 if (!ProgramActionOpt) { 2541 // PluginAction is the only program action handled separately. 2542 assert(Opts.ProgramAction == frontend::PluginAction && 2543 "Frontend action without option."); 2544 GenerateProgramAction = [&]() { 2545 GenerateArg(Args, OPT_plugin, Opts.ActionName, SA); 2546 }; 2547 } 2548 2549 // FIXME: Simplify the complex 'AST dump' command line. 2550 if (Opts.ProgramAction == frontend::ASTDump) { 2551 GenerateProgramAction = [&]() { 2552 // ASTDumpLookups, ASTDumpDeclTypes and ASTDumpFilter are generated via 2553 // marshalling infrastructure. 2554 2555 if (Opts.ASTDumpFormat != ADOF_Default) { 2556 StringRef Format; 2557 switch (Opts.ASTDumpFormat) { 2558 case ADOF_Default: 2559 llvm_unreachable("Default AST dump format."); 2560 case ADOF_JSON: 2561 Format = "json"; 2562 break; 2563 } 2564 2565 if (Opts.ASTDumpAll) 2566 GenerateArg(Args, OPT_ast_dump_all_EQ, Format, SA); 2567 if (Opts.ASTDumpDecls) 2568 GenerateArg(Args, OPT_ast_dump_EQ, Format, SA); 2569 } else { 2570 if (Opts.ASTDumpAll) 2571 GenerateArg(Args, OPT_ast_dump_all, SA); 2572 if (Opts.ASTDumpDecls) 2573 GenerateArg(Args, OPT_ast_dump, SA); 2574 } 2575 }; 2576 } 2577 2578 if (Opts.ProgramAction == frontend::FixIt && !Opts.FixItSuffix.empty()) { 2579 GenerateProgramAction = [&]() { 2580 GenerateArg(Args, OPT_fixit_EQ, Opts.FixItSuffix, SA); 2581 }; 2582 } 2583 2584 GenerateProgramAction(); 2585 2586 for (const auto &PluginArgs : Opts.PluginArgs) { 2587 Option Opt = getDriverOptTable().getOption(OPT_plugin_arg); 2588 const char *Spelling = 2589 SA(Opt.getPrefix() + Opt.getName() + PluginArgs.first); 2590 for (const auto &PluginArg : PluginArgs.second) 2591 denormalizeString(Args, Spelling, SA, Opt.getKind(), 0, PluginArg); 2592 } 2593 2594 for (const auto &Ext : Opts.ModuleFileExtensions) 2595 if (auto *TestExt = dyn_cast_or_null<TestModuleFileExtension>(Ext.get())) 2596 GenerateArg(Args, OPT_ftest_module_file_extension_EQ, TestExt->str(), SA); 2597 2598 if (!Opts.CodeCompletionAt.FileName.empty()) 2599 GenerateArg(Args, OPT_code_completion_at, Opts.CodeCompletionAt.ToString(), 2600 SA); 2601 2602 for (const auto &Plugin : Opts.Plugins) 2603 GenerateArg(Args, OPT_load, Plugin, SA); 2604 2605 // ASTDumpDecls and ASTDumpAll already handled with ProgramAction. 2606 2607 for (const auto &ModuleFile : Opts.ModuleFiles) 2608 GenerateArg(Args, OPT_fmodule_file, ModuleFile, SA); 2609 2610 if (Opts.AuxTargetCPU) 2611 GenerateArg(Args, OPT_aux_target_cpu, *Opts.AuxTargetCPU, SA); 2612 2613 if (Opts.AuxTargetFeatures) 2614 for (const auto &Feature : *Opts.AuxTargetFeatures) 2615 GenerateArg(Args, OPT_aux_target_feature, Feature, SA); 2616 2617 { 2618 StringRef Preprocessed = Opts.DashX.isPreprocessed() ? "-cpp-output" : ""; 2619 StringRef ModuleMap = 2620 Opts.DashX.getFormat() == InputKind::ModuleMap ? "-module-map" : ""; 2621 StringRef HeaderUnit = ""; 2622 switch (Opts.DashX.getHeaderUnitKind()) { 2623 case InputKind::HeaderUnit_None: 2624 break; 2625 case InputKind::HeaderUnit_User: 2626 HeaderUnit = "-user"; 2627 break; 2628 case InputKind::HeaderUnit_System: 2629 HeaderUnit = "-system"; 2630 break; 2631 case InputKind::HeaderUnit_Abs: 2632 HeaderUnit = "-header-unit"; 2633 break; 2634 } 2635 StringRef Header = IsHeader ? "-header" : ""; 2636 2637 StringRef Lang; 2638 switch (Opts.DashX.getLanguage()) { 2639 case Language::C: 2640 Lang = "c"; 2641 break; 2642 case Language::OpenCL: 2643 Lang = "cl"; 2644 break; 2645 case Language::OpenCLCXX: 2646 Lang = "clcpp"; 2647 break; 2648 case Language::CUDA: 2649 Lang = "cuda"; 2650 break; 2651 case Language::HIP: 2652 Lang = "hip"; 2653 break; 2654 case Language::CXX: 2655 Lang = "c++"; 2656 break; 2657 case Language::ObjC: 2658 Lang = "objective-c"; 2659 break; 2660 case Language::ObjCXX: 2661 Lang = "objective-c++"; 2662 break; 2663 case Language::RenderScript: 2664 Lang = "renderscript"; 2665 break; 2666 case Language::Asm: 2667 Lang = "assembler-with-cpp"; 2668 break; 2669 case Language::Unknown: 2670 assert(Opts.DashX.getFormat() == InputKind::Precompiled && 2671 "Generating -x argument for unknown language (not precompiled)."); 2672 Lang = "ast"; 2673 break; 2674 case Language::LLVM_IR: 2675 Lang = "ir"; 2676 break; 2677 case Language::HLSL: 2678 Lang = "hlsl"; 2679 break; 2680 } 2681 2682 GenerateArg(Args, OPT_x, 2683 Lang + HeaderUnit + Header + ModuleMap + Preprocessed, SA); 2684 } 2685 2686 // OPT_INPUT has a unique class, generate it directly. 2687 for (const auto &Input : Opts.Inputs) 2688 Args.push_back(SA(Input.getFile())); 2689 } 2690 2691 static bool ParseFrontendArgs(FrontendOptions &Opts, ArgList &Args, 2692 DiagnosticsEngine &Diags, bool &IsHeaderFile) { 2693 unsigned NumErrorsBefore = Diags.getNumErrors(); 2694 2695 FrontendOptions &FrontendOpts = Opts; 2696 2697 #define FRONTEND_OPTION_WITH_MARSHALLING( \ 2698 PREFIX_TYPE, NAME, ID, KIND, GROUP, ALIAS, ALIASARGS, FLAGS, PARAM, \ 2699 HELPTEXT, METAVAR, VALUES, SPELLING, SHOULD_PARSE, ALWAYS_EMIT, KEYPATH, \ 2700 DEFAULT_VALUE, IMPLIED_CHECK, IMPLIED_VALUE, NORMALIZER, DENORMALIZER, \ 2701 MERGER, EXTRACTOR, TABLE_INDEX) \ 2702 PARSE_OPTION_WITH_MARSHALLING( \ 2703 Args, Diags, ID, FLAGS, PARAM, SHOULD_PARSE, KEYPATH, DEFAULT_VALUE, \ 2704 IMPLIED_CHECK, IMPLIED_VALUE, NORMALIZER, MERGER, TABLE_INDEX) 2705 #include "clang/Driver/Options.inc" 2706 #undef FRONTEND_OPTION_WITH_MARSHALLING 2707 2708 Opts.ProgramAction = frontend::ParseSyntaxOnly; 2709 if (const Arg *A = Args.getLastArg(OPT_Action_Group)) { 2710 OptSpecifier Opt = OptSpecifier(A->getOption().getID()); 2711 Optional<frontend::ActionKind> ProgramAction = getFrontendAction(Opt); 2712 assert(ProgramAction && "Option specifier not in Action_Group."); 2713 2714 if (ProgramAction == frontend::ASTDump && 2715 (Opt == OPT_ast_dump_all_EQ || Opt == OPT_ast_dump_EQ)) { 2716 unsigned Val = llvm::StringSwitch<unsigned>(A->getValue()) 2717 .CaseLower("default", ADOF_Default) 2718 .CaseLower("json", ADOF_JSON) 2719 .Default(std::numeric_limits<unsigned>::max()); 2720 2721 if (Val != std::numeric_limits<unsigned>::max()) 2722 Opts.ASTDumpFormat = static_cast<ASTDumpOutputFormat>(Val); 2723 else { 2724 Diags.Report(diag::err_drv_invalid_value) 2725 << A->getAsString(Args) << A->getValue(); 2726 Opts.ASTDumpFormat = ADOF_Default; 2727 } 2728 } 2729 2730 if (ProgramAction == frontend::FixIt && Opt == OPT_fixit_EQ) 2731 Opts.FixItSuffix = A->getValue(); 2732 2733 if (ProgramAction == frontend::GenerateInterfaceStubs) { 2734 StringRef ArgStr = 2735 Args.hasArg(OPT_interface_stub_version_EQ) 2736 ? Args.getLastArgValue(OPT_interface_stub_version_EQ) 2737 : "ifs-v1"; 2738 if (ArgStr == "experimental-yaml-elf-v1" || 2739 ArgStr == "experimental-ifs-v1" || ArgStr == "experimental-ifs-v2" || 2740 ArgStr == "experimental-tapi-elf-v1") { 2741 std::string ErrorMessage = 2742 "Invalid interface stub format: " + ArgStr.str() + 2743 " is deprecated."; 2744 Diags.Report(diag::err_drv_invalid_value) 2745 << "Must specify a valid interface stub format type, ie: " 2746 "-interface-stub-version=ifs-v1" 2747 << ErrorMessage; 2748 ProgramAction = frontend::ParseSyntaxOnly; 2749 } else if (!ArgStr.startswith("ifs-")) { 2750 std::string ErrorMessage = 2751 "Invalid interface stub format: " + ArgStr.str() + "."; 2752 Diags.Report(diag::err_drv_invalid_value) 2753 << "Must specify a valid interface stub format type, ie: " 2754 "-interface-stub-version=ifs-v1" 2755 << ErrorMessage; 2756 ProgramAction = frontend::ParseSyntaxOnly; 2757 } 2758 } 2759 2760 Opts.ProgramAction = *ProgramAction; 2761 } 2762 2763 if (const Arg* A = Args.getLastArg(OPT_plugin)) { 2764 Opts.Plugins.emplace_back(A->getValue(0)); 2765 Opts.ProgramAction = frontend::PluginAction; 2766 Opts.ActionName = A->getValue(); 2767 } 2768 for (const auto *AA : Args.filtered(OPT_plugin_arg)) 2769 Opts.PluginArgs[AA->getValue(0)].emplace_back(AA->getValue(1)); 2770 2771 for (const std::string &Arg : 2772 Args.getAllArgValues(OPT_ftest_module_file_extension_EQ)) { 2773 std::string BlockName; 2774 unsigned MajorVersion; 2775 unsigned MinorVersion; 2776 bool Hashed; 2777 std::string UserInfo; 2778 if (parseTestModuleFileExtensionArg(Arg, BlockName, MajorVersion, 2779 MinorVersion, Hashed, UserInfo)) { 2780 Diags.Report(diag::err_test_module_file_extension_format) << Arg; 2781 2782 continue; 2783 } 2784 2785 // Add the testing module file extension. 2786 Opts.ModuleFileExtensions.push_back( 2787 std::make_shared<TestModuleFileExtension>( 2788 BlockName, MajorVersion, MinorVersion, Hashed, UserInfo)); 2789 } 2790 2791 if (const Arg *A = Args.getLastArg(OPT_code_completion_at)) { 2792 Opts.CodeCompletionAt = 2793 ParsedSourceLocation::FromString(A->getValue()); 2794 if (Opts.CodeCompletionAt.FileName.empty()) 2795 Diags.Report(diag::err_drv_invalid_value) 2796 << A->getAsString(Args) << A->getValue(); 2797 } 2798 2799 Opts.Plugins = Args.getAllArgValues(OPT_load); 2800 Opts.ASTDumpDecls = Args.hasArg(OPT_ast_dump, OPT_ast_dump_EQ); 2801 Opts.ASTDumpAll = Args.hasArg(OPT_ast_dump_all, OPT_ast_dump_all_EQ); 2802 // Only the -fmodule-file=<file> form. 2803 for (const auto *A : Args.filtered(OPT_fmodule_file)) { 2804 StringRef Val = A->getValue(); 2805 if (!Val.contains('=')) 2806 Opts.ModuleFiles.push_back(std::string(Val)); 2807 } 2808 2809 if (Opts.ProgramAction != frontend::GenerateModule && Opts.IsSystemModule) 2810 Diags.Report(diag::err_drv_argument_only_allowed_with) << "-fsystem-module" 2811 << "-emit-module"; 2812 2813 if (Args.hasArg(OPT_aux_target_cpu)) 2814 Opts.AuxTargetCPU = std::string(Args.getLastArgValue(OPT_aux_target_cpu)); 2815 if (Args.hasArg(OPT_aux_target_feature)) 2816 Opts.AuxTargetFeatures = Args.getAllArgValues(OPT_aux_target_feature); 2817 2818 if (Opts.ARCMTAction != FrontendOptions::ARCMT_None && 2819 Opts.ObjCMTAction != FrontendOptions::ObjCMT_None) { 2820 Diags.Report(diag::err_drv_argument_not_allowed_with) 2821 << "ARC migration" << "ObjC migration"; 2822 } 2823 2824 InputKind DashX(Language::Unknown); 2825 if (const Arg *A = Args.getLastArg(OPT_x)) { 2826 StringRef XValue = A->getValue(); 2827 2828 // Parse suffixes: 2829 // '<lang>(-[{header-unit,user,system}-]header|[-module-map][-cpp-output])'. 2830 // FIXME: Supporting '<lang>-header-cpp-output' would be useful. 2831 bool Preprocessed = XValue.consume_back("-cpp-output"); 2832 bool ModuleMap = XValue.consume_back("-module-map"); 2833 // Detect and consume the header indicator. 2834 bool IsHeader = 2835 XValue != "precompiled-header" && XValue.consume_back("-header"); 2836 2837 // If we have c++-{user,system}-header, that indicates a header unit input 2838 // likewise, if the user put -fmodule-header together with a header with an 2839 // absolute path (header-unit-header). 2840 InputKind::HeaderUnitKind HUK = InputKind::HeaderUnit_None; 2841 if (IsHeader || Preprocessed) { 2842 if (XValue.consume_back("-header-unit")) 2843 HUK = InputKind::HeaderUnit_Abs; 2844 else if (XValue.consume_back("-system")) 2845 HUK = InputKind::HeaderUnit_System; 2846 else if (XValue.consume_back("-user")) 2847 HUK = InputKind::HeaderUnit_User; 2848 } 2849 2850 // The value set by this processing is an un-preprocessed source which is 2851 // not intended to be a module map or header unit. 2852 IsHeaderFile = IsHeader && !Preprocessed && !ModuleMap && 2853 HUK == InputKind::HeaderUnit_None; 2854 2855 // Principal languages. 2856 DashX = llvm::StringSwitch<InputKind>(XValue) 2857 .Case("c", Language::C) 2858 .Case("cl", Language::OpenCL) 2859 .Case("clcpp", Language::OpenCLCXX) 2860 .Case("cuda", Language::CUDA) 2861 .Case("hip", Language::HIP) 2862 .Case("c++", Language::CXX) 2863 .Case("objective-c", Language::ObjC) 2864 .Case("objective-c++", Language::ObjCXX) 2865 .Case("renderscript", Language::RenderScript) 2866 .Case("hlsl", Language::HLSL) 2867 .Default(Language::Unknown); 2868 2869 // "objc[++]-cpp-output" is an acceptable synonym for 2870 // "objective-c[++]-cpp-output". 2871 if (DashX.isUnknown() && Preprocessed && !IsHeaderFile && !ModuleMap && 2872 HUK == InputKind::HeaderUnit_None) 2873 DashX = llvm::StringSwitch<InputKind>(XValue) 2874 .Case("objc", Language::ObjC) 2875 .Case("objc++", Language::ObjCXX) 2876 .Default(Language::Unknown); 2877 2878 // Some special cases cannot be combined with suffixes. 2879 if (DashX.isUnknown() && !Preprocessed && !IsHeaderFile && !ModuleMap && 2880 HUK == InputKind::HeaderUnit_None) 2881 DashX = llvm::StringSwitch<InputKind>(XValue) 2882 .Case("cpp-output", InputKind(Language::C).getPreprocessed()) 2883 .Case("assembler-with-cpp", Language::Asm) 2884 .Cases("ast", "pcm", "precompiled-header", 2885 InputKind(Language::Unknown, InputKind::Precompiled)) 2886 .Case("ir", Language::LLVM_IR) 2887 .Default(Language::Unknown); 2888 2889 if (DashX.isUnknown()) 2890 Diags.Report(diag::err_drv_invalid_value) 2891 << A->getAsString(Args) << A->getValue(); 2892 2893 if (Preprocessed) 2894 DashX = DashX.getPreprocessed(); 2895 // A regular header is considered mutually exclusive with a header unit. 2896 if (HUK != InputKind::HeaderUnit_None) { 2897 DashX = DashX.withHeaderUnit(HUK); 2898 IsHeaderFile = true; 2899 } else if (IsHeaderFile) 2900 DashX = DashX.getHeader(); 2901 if (ModuleMap) 2902 DashX = DashX.withFormat(InputKind::ModuleMap); 2903 } 2904 2905 // '-' is the default input if none is given. 2906 std::vector<std::string> Inputs = Args.getAllArgValues(OPT_INPUT); 2907 Opts.Inputs.clear(); 2908 if (Inputs.empty()) 2909 Inputs.push_back("-"); 2910 2911 if (DashX.getHeaderUnitKind() != InputKind::HeaderUnit_None && 2912 Inputs.size() > 1) 2913 Diags.Report(diag::err_drv_header_unit_extra_inputs) << Inputs[1]; 2914 2915 for (unsigned i = 0, e = Inputs.size(); i != e; ++i) { 2916 InputKind IK = DashX; 2917 if (IK.isUnknown()) { 2918 IK = FrontendOptions::getInputKindForExtension( 2919 StringRef(Inputs[i]).rsplit('.').second); 2920 // FIXME: Warn on this? 2921 if (IK.isUnknown()) 2922 IK = Language::C; 2923 // FIXME: Remove this hack. 2924 if (i == 0) 2925 DashX = IK; 2926 } 2927 2928 bool IsSystem = false; 2929 2930 // The -emit-module action implicitly takes a module map. 2931 if (Opts.ProgramAction == frontend::GenerateModule && 2932 IK.getFormat() == InputKind::Source) { 2933 IK = IK.withFormat(InputKind::ModuleMap); 2934 IsSystem = Opts.IsSystemModule; 2935 } 2936 2937 Opts.Inputs.emplace_back(std::move(Inputs[i]), IK, IsSystem); 2938 } 2939 2940 Opts.DashX = DashX; 2941 2942 return Diags.getNumErrors() == NumErrorsBefore; 2943 } 2944 2945 std::string CompilerInvocation::GetResourcesPath(const char *Argv0, 2946 void *MainAddr) { 2947 std::string ClangExecutable = 2948 llvm::sys::fs::getMainExecutable(Argv0, MainAddr); 2949 return Driver::GetResourcesPath(ClangExecutable, CLANG_RESOURCE_DIR); 2950 } 2951 2952 static void GenerateHeaderSearchArgs(HeaderSearchOptions &Opts, 2953 SmallVectorImpl<const char *> &Args, 2954 CompilerInvocation::StringAllocator SA) { 2955 const HeaderSearchOptions *HeaderSearchOpts = &Opts; 2956 #define HEADER_SEARCH_OPTION_WITH_MARSHALLING( \ 2957 PREFIX_TYPE, NAME, ID, KIND, GROUP, ALIAS, ALIASARGS, FLAGS, PARAM, \ 2958 HELPTEXT, METAVAR, VALUES, SPELLING, SHOULD_PARSE, ALWAYS_EMIT, KEYPATH, \ 2959 DEFAULT_VALUE, IMPLIED_CHECK, IMPLIED_VALUE, NORMALIZER, DENORMALIZER, \ 2960 MERGER, EXTRACTOR, TABLE_INDEX) \ 2961 GENERATE_OPTION_WITH_MARSHALLING( \ 2962 Args, SA, KIND, FLAGS, SPELLING, ALWAYS_EMIT, KEYPATH, DEFAULT_VALUE, \ 2963 IMPLIED_CHECK, IMPLIED_VALUE, DENORMALIZER, EXTRACTOR, TABLE_INDEX) 2964 #include "clang/Driver/Options.inc" 2965 #undef HEADER_SEARCH_OPTION_WITH_MARSHALLING 2966 2967 if (Opts.UseLibcxx) 2968 GenerateArg(Args, OPT_stdlib_EQ, "libc++", SA); 2969 2970 if (!Opts.ModuleCachePath.empty()) 2971 GenerateArg(Args, OPT_fmodules_cache_path, Opts.ModuleCachePath, SA); 2972 2973 for (const auto &File : Opts.PrebuiltModuleFiles) 2974 GenerateArg(Args, OPT_fmodule_file, File.first + "=" + File.second, SA); 2975 2976 for (const auto &Path : Opts.PrebuiltModulePaths) 2977 GenerateArg(Args, OPT_fprebuilt_module_path, Path, SA); 2978 2979 for (const auto &Macro : Opts.ModulesIgnoreMacros) 2980 GenerateArg(Args, OPT_fmodules_ignore_macro, Macro.val(), SA); 2981 2982 auto Matches = [](const HeaderSearchOptions::Entry &Entry, 2983 llvm::ArrayRef<frontend::IncludeDirGroup> Groups, 2984 llvm::Optional<bool> IsFramework, 2985 llvm::Optional<bool> IgnoreSysRoot) { 2986 return llvm::is_contained(Groups, Entry.Group) && 2987 (!IsFramework || (Entry.IsFramework == *IsFramework)) && 2988 (!IgnoreSysRoot || (Entry.IgnoreSysRoot == *IgnoreSysRoot)); 2989 }; 2990 2991 auto It = Opts.UserEntries.begin(); 2992 auto End = Opts.UserEntries.end(); 2993 2994 // Add -I..., -F..., and -index-header-map options in order. 2995 for (; It < End && 2996 Matches(*It, {frontend::IndexHeaderMap, frontend::Angled}, None, true); 2997 ++It) { 2998 OptSpecifier Opt = [It, Matches]() { 2999 if (Matches(*It, frontend::IndexHeaderMap, true, true)) 3000 return OPT_F; 3001 if (Matches(*It, frontend::IndexHeaderMap, false, true)) 3002 return OPT_I; 3003 if (Matches(*It, frontend::Angled, true, true)) 3004 return OPT_F; 3005 if (Matches(*It, frontend::Angled, false, true)) 3006 return OPT_I; 3007 llvm_unreachable("Unexpected HeaderSearchOptions::Entry."); 3008 }(); 3009 3010 if (It->Group == frontend::IndexHeaderMap) 3011 GenerateArg(Args, OPT_index_header_map, SA); 3012 GenerateArg(Args, Opt, It->Path, SA); 3013 }; 3014 3015 // Note: some paths that came from "[-iprefix=xx] -iwithprefixbefore=yy" may 3016 // have already been generated as "-I[xx]yy". If that's the case, their 3017 // position on command line was such that this has no semantic impact on 3018 // include paths. 3019 for (; It < End && 3020 Matches(*It, {frontend::After, frontend::Angled}, false, true); 3021 ++It) { 3022 OptSpecifier Opt = 3023 It->Group == frontend::After ? OPT_iwithprefix : OPT_iwithprefixbefore; 3024 GenerateArg(Args, Opt, It->Path, SA); 3025 } 3026 3027 // Note: Some paths that came from "-idirafter=xxyy" may have already been 3028 // generated as "-iwithprefix=xxyy". If that's the case, their position on 3029 // command line was such that this has no semantic impact on include paths. 3030 for (; It < End && Matches(*It, {frontend::After}, false, true); ++It) 3031 GenerateArg(Args, OPT_idirafter, It->Path, SA); 3032 for (; It < End && Matches(*It, {frontend::Quoted}, false, true); ++It) 3033 GenerateArg(Args, OPT_iquote, It->Path, SA); 3034 for (; It < End && Matches(*It, {frontend::System}, false, None); ++It) 3035 GenerateArg(Args, It->IgnoreSysRoot ? OPT_isystem : OPT_iwithsysroot, 3036 It->Path, SA); 3037 for (; It < End && Matches(*It, {frontend::System}, true, true); ++It) 3038 GenerateArg(Args, OPT_iframework, It->Path, SA); 3039 for (; It < End && Matches(*It, {frontend::System}, true, false); ++It) 3040 GenerateArg(Args, OPT_iframeworkwithsysroot, It->Path, SA); 3041 3042 // Add the paths for the various language specific isystem flags. 3043 for (; It < End && Matches(*It, {frontend::CSystem}, false, true); ++It) 3044 GenerateArg(Args, OPT_c_isystem, It->Path, SA); 3045 for (; It < End && Matches(*It, {frontend::CXXSystem}, false, true); ++It) 3046 GenerateArg(Args, OPT_cxx_isystem, It->Path, SA); 3047 for (; It < End && Matches(*It, {frontend::ObjCSystem}, false, true); ++It) 3048 GenerateArg(Args, OPT_objc_isystem, It->Path, SA); 3049 for (; It < End && Matches(*It, {frontend::ObjCXXSystem}, false, true); ++It) 3050 GenerateArg(Args, OPT_objcxx_isystem, It->Path, SA); 3051 3052 // Add the internal paths from a driver that detects standard include paths. 3053 // Note: Some paths that came from "-internal-isystem" arguments may have 3054 // already been generated as "-isystem". If that's the case, their position on 3055 // command line was such that this has no semantic impact on include paths. 3056 for (; It < End && 3057 Matches(*It, {frontend::System, frontend::ExternCSystem}, false, true); 3058 ++It) { 3059 OptSpecifier Opt = It->Group == frontend::System 3060 ? OPT_internal_isystem 3061 : OPT_internal_externc_isystem; 3062 GenerateArg(Args, Opt, It->Path, SA); 3063 } 3064 3065 assert(It == End && "Unhandled HeaderSearchOption::Entry."); 3066 3067 // Add the path prefixes which are implicitly treated as being system headers. 3068 for (const auto &P : Opts.SystemHeaderPrefixes) { 3069 OptSpecifier Opt = P.IsSystemHeader ? OPT_system_header_prefix 3070 : OPT_no_system_header_prefix; 3071 GenerateArg(Args, Opt, P.Prefix, SA); 3072 } 3073 3074 for (const std::string &F : Opts.VFSOverlayFiles) 3075 GenerateArg(Args, OPT_ivfsoverlay, F, SA); 3076 } 3077 3078 static bool ParseHeaderSearchArgs(HeaderSearchOptions &Opts, ArgList &Args, 3079 DiagnosticsEngine &Diags, 3080 const std::string &WorkingDir) { 3081 unsigned NumErrorsBefore = Diags.getNumErrors(); 3082 3083 HeaderSearchOptions *HeaderSearchOpts = &Opts; 3084 3085 #define HEADER_SEARCH_OPTION_WITH_MARSHALLING( \ 3086 PREFIX_TYPE, NAME, ID, KIND, GROUP, ALIAS, ALIASARGS, FLAGS, PARAM, \ 3087 HELPTEXT, METAVAR, VALUES, SPELLING, SHOULD_PARSE, ALWAYS_EMIT, KEYPATH, \ 3088 DEFAULT_VALUE, IMPLIED_CHECK, IMPLIED_VALUE, NORMALIZER, DENORMALIZER, \ 3089 MERGER, EXTRACTOR, TABLE_INDEX) \ 3090 PARSE_OPTION_WITH_MARSHALLING( \ 3091 Args, Diags, ID, FLAGS, PARAM, SHOULD_PARSE, KEYPATH, DEFAULT_VALUE, \ 3092 IMPLIED_CHECK, IMPLIED_VALUE, NORMALIZER, MERGER, TABLE_INDEX) 3093 #include "clang/Driver/Options.inc" 3094 #undef HEADER_SEARCH_OPTION_WITH_MARSHALLING 3095 3096 if (const Arg *A = Args.getLastArg(OPT_stdlib_EQ)) 3097 Opts.UseLibcxx = (strcmp(A->getValue(), "libc++") == 0); 3098 3099 // Canonicalize -fmodules-cache-path before storing it. 3100 SmallString<128> P(Args.getLastArgValue(OPT_fmodules_cache_path)); 3101 if (!(P.empty() || llvm::sys::path::is_absolute(P))) { 3102 if (WorkingDir.empty()) 3103 llvm::sys::fs::make_absolute(P); 3104 else 3105 llvm::sys::fs::make_absolute(WorkingDir, P); 3106 } 3107 llvm::sys::path::remove_dots(P); 3108 Opts.ModuleCachePath = std::string(P.str()); 3109 3110 // Only the -fmodule-file=<name>=<file> form. 3111 for (const auto *A : Args.filtered(OPT_fmodule_file)) { 3112 StringRef Val = A->getValue(); 3113 if (Val.contains('=')) { 3114 auto Split = Val.split('='); 3115 Opts.PrebuiltModuleFiles.insert( 3116 {std::string(Split.first), std::string(Split.second)}); 3117 } 3118 } 3119 for (const auto *A : Args.filtered(OPT_fprebuilt_module_path)) 3120 Opts.AddPrebuiltModulePath(A->getValue()); 3121 3122 for (const auto *A : Args.filtered(OPT_fmodules_ignore_macro)) { 3123 StringRef MacroDef = A->getValue(); 3124 Opts.ModulesIgnoreMacros.insert( 3125 llvm::CachedHashString(MacroDef.split('=').first)); 3126 } 3127 3128 // Add -I..., -F..., and -index-header-map options in order. 3129 bool IsIndexHeaderMap = false; 3130 bool IsSysrootSpecified = 3131 Args.hasArg(OPT__sysroot_EQ) || Args.hasArg(OPT_isysroot); 3132 for (const auto *A : Args.filtered(OPT_I, OPT_F, OPT_index_header_map)) { 3133 if (A->getOption().matches(OPT_index_header_map)) { 3134 // -index-header-map applies to the next -I or -F. 3135 IsIndexHeaderMap = true; 3136 continue; 3137 } 3138 3139 frontend::IncludeDirGroup Group = 3140 IsIndexHeaderMap ? frontend::IndexHeaderMap : frontend::Angled; 3141 3142 bool IsFramework = A->getOption().matches(OPT_F); 3143 std::string Path = A->getValue(); 3144 3145 if (IsSysrootSpecified && !IsFramework && A->getValue()[0] == '=') { 3146 SmallString<32> Buffer; 3147 llvm::sys::path::append(Buffer, Opts.Sysroot, 3148 llvm::StringRef(A->getValue()).substr(1)); 3149 Path = std::string(Buffer.str()); 3150 } 3151 3152 Opts.AddPath(Path, Group, IsFramework, 3153 /*IgnoreSysroot*/ true); 3154 IsIndexHeaderMap = false; 3155 } 3156 3157 // Add -iprefix/-iwithprefix/-iwithprefixbefore options. 3158 StringRef Prefix = ""; // FIXME: This isn't the correct default prefix. 3159 for (const auto *A : 3160 Args.filtered(OPT_iprefix, OPT_iwithprefix, OPT_iwithprefixbefore)) { 3161 if (A->getOption().matches(OPT_iprefix)) 3162 Prefix = A->getValue(); 3163 else if (A->getOption().matches(OPT_iwithprefix)) 3164 Opts.AddPath(Prefix.str() + A->getValue(), frontend::After, false, true); 3165 else 3166 Opts.AddPath(Prefix.str() + A->getValue(), frontend::Angled, false, true); 3167 } 3168 3169 for (const auto *A : Args.filtered(OPT_idirafter)) 3170 Opts.AddPath(A->getValue(), frontend::After, false, true); 3171 for (const auto *A : Args.filtered(OPT_iquote)) 3172 Opts.AddPath(A->getValue(), frontend::Quoted, false, true); 3173 for (const auto *A : Args.filtered(OPT_isystem, OPT_iwithsysroot)) 3174 Opts.AddPath(A->getValue(), frontend::System, false, 3175 !A->getOption().matches(OPT_iwithsysroot)); 3176 for (const auto *A : Args.filtered(OPT_iframework)) 3177 Opts.AddPath(A->getValue(), frontend::System, true, true); 3178 for (const auto *A : Args.filtered(OPT_iframeworkwithsysroot)) 3179 Opts.AddPath(A->getValue(), frontend::System, /*IsFramework=*/true, 3180 /*IgnoreSysRoot=*/false); 3181 3182 // Add the paths for the various language specific isystem flags. 3183 for (const auto *A : Args.filtered(OPT_c_isystem)) 3184 Opts.AddPath(A->getValue(), frontend::CSystem, false, true); 3185 for (const auto *A : Args.filtered(OPT_cxx_isystem)) 3186 Opts.AddPath(A->getValue(), frontend::CXXSystem, false, true); 3187 for (const auto *A : Args.filtered(OPT_objc_isystem)) 3188 Opts.AddPath(A->getValue(), frontend::ObjCSystem, false,true); 3189 for (const auto *A : Args.filtered(OPT_objcxx_isystem)) 3190 Opts.AddPath(A->getValue(), frontend::ObjCXXSystem, false, true); 3191 3192 // Add the internal paths from a driver that detects standard include paths. 3193 for (const auto *A : 3194 Args.filtered(OPT_internal_isystem, OPT_internal_externc_isystem)) { 3195 frontend::IncludeDirGroup Group = frontend::System; 3196 if (A->getOption().matches(OPT_internal_externc_isystem)) 3197 Group = frontend::ExternCSystem; 3198 Opts.AddPath(A->getValue(), Group, false, true); 3199 } 3200 3201 // Add the path prefixes which are implicitly treated as being system headers. 3202 for (const auto *A : 3203 Args.filtered(OPT_system_header_prefix, OPT_no_system_header_prefix)) 3204 Opts.AddSystemHeaderPrefix( 3205 A->getValue(), A->getOption().matches(OPT_system_header_prefix)); 3206 3207 for (const auto *A : Args.filtered(OPT_ivfsoverlay)) 3208 Opts.AddVFSOverlayFile(A->getValue()); 3209 3210 return Diags.getNumErrors() == NumErrorsBefore; 3211 } 3212 3213 /// Check if input file kind and language standard are compatible. 3214 static bool IsInputCompatibleWithStandard(InputKind IK, 3215 const LangStandard &S) { 3216 switch (IK.getLanguage()) { 3217 case Language::Unknown: 3218 case Language::LLVM_IR: 3219 llvm_unreachable("should not parse language flags for this input"); 3220 3221 case Language::C: 3222 case Language::ObjC: 3223 case Language::RenderScript: 3224 return S.getLanguage() == Language::C; 3225 3226 case Language::OpenCL: 3227 return S.getLanguage() == Language::OpenCL || 3228 S.getLanguage() == Language::OpenCLCXX; 3229 3230 case Language::OpenCLCXX: 3231 return S.getLanguage() == Language::OpenCLCXX; 3232 3233 case Language::CXX: 3234 case Language::ObjCXX: 3235 return S.getLanguage() == Language::CXX; 3236 3237 case Language::CUDA: 3238 // FIXME: What -std= values should be permitted for CUDA compilations? 3239 return S.getLanguage() == Language::CUDA || 3240 S.getLanguage() == Language::CXX; 3241 3242 case Language::HIP: 3243 return S.getLanguage() == Language::CXX || S.getLanguage() == Language::HIP; 3244 3245 case Language::Asm: 3246 // Accept (and ignore) all -std= values. 3247 // FIXME: The -std= value is not ignored; it affects the tokenization 3248 // and preprocessing rules if we're preprocessing this asm input. 3249 return true; 3250 3251 case Language::HLSL: 3252 return S.getLanguage() == Language::HLSL; 3253 } 3254 3255 llvm_unreachable("unexpected input language"); 3256 } 3257 3258 /// Get language name for given input kind. 3259 static StringRef GetInputKindName(InputKind IK) { 3260 switch (IK.getLanguage()) { 3261 case Language::C: 3262 return "C"; 3263 case Language::ObjC: 3264 return "Objective-C"; 3265 case Language::CXX: 3266 return "C++"; 3267 case Language::ObjCXX: 3268 return "Objective-C++"; 3269 case Language::OpenCL: 3270 return "OpenCL"; 3271 case Language::OpenCLCXX: 3272 return "C++ for OpenCL"; 3273 case Language::CUDA: 3274 return "CUDA"; 3275 case Language::RenderScript: 3276 return "RenderScript"; 3277 case Language::HIP: 3278 return "HIP"; 3279 3280 case Language::Asm: 3281 return "Asm"; 3282 case Language::LLVM_IR: 3283 return "LLVM IR"; 3284 3285 case Language::HLSL: 3286 return "HLSL"; 3287 3288 case Language::Unknown: 3289 break; 3290 } 3291 llvm_unreachable("unknown input language"); 3292 } 3293 3294 void CompilerInvocation::GenerateLangArgs(const LangOptions &Opts, 3295 SmallVectorImpl<const char *> &Args, 3296 StringAllocator SA, 3297 const llvm::Triple &T, InputKind IK) { 3298 if (IK.getFormat() == InputKind::Precompiled || 3299 IK.getLanguage() == Language::LLVM_IR) { 3300 if (Opts.ObjCAutoRefCount) 3301 GenerateArg(Args, OPT_fobjc_arc, SA); 3302 if (Opts.PICLevel != 0) 3303 GenerateArg(Args, OPT_pic_level, Twine(Opts.PICLevel), SA); 3304 if (Opts.PIE) 3305 GenerateArg(Args, OPT_pic_is_pie, SA); 3306 for (StringRef Sanitizer : serializeSanitizerKinds(Opts.Sanitize)) 3307 GenerateArg(Args, OPT_fsanitize_EQ, Sanitizer, SA); 3308 3309 return; 3310 } 3311 3312 OptSpecifier StdOpt; 3313 switch (Opts.LangStd) { 3314 case LangStandard::lang_opencl10: 3315 case LangStandard::lang_opencl11: 3316 case LangStandard::lang_opencl12: 3317 case LangStandard::lang_opencl20: 3318 case LangStandard::lang_opencl30: 3319 case LangStandard::lang_openclcpp10: 3320 case LangStandard::lang_openclcpp2021: 3321 StdOpt = OPT_cl_std_EQ; 3322 break; 3323 default: 3324 StdOpt = OPT_std_EQ; 3325 break; 3326 } 3327 3328 auto LangStandard = LangStandard::getLangStandardForKind(Opts.LangStd); 3329 GenerateArg(Args, StdOpt, LangStandard.getName(), SA); 3330 3331 if (Opts.IncludeDefaultHeader) 3332 GenerateArg(Args, OPT_finclude_default_header, SA); 3333 if (Opts.DeclareOpenCLBuiltins) 3334 GenerateArg(Args, OPT_fdeclare_opencl_builtins, SA); 3335 3336 const LangOptions *LangOpts = &Opts; 3337 3338 #define LANG_OPTION_WITH_MARSHALLING( \ 3339 PREFIX_TYPE, NAME, ID, KIND, GROUP, ALIAS, ALIASARGS, FLAGS, PARAM, \ 3340 HELPTEXT, METAVAR, VALUES, SPELLING, SHOULD_PARSE, ALWAYS_EMIT, KEYPATH, \ 3341 DEFAULT_VALUE, IMPLIED_CHECK, IMPLIED_VALUE, NORMALIZER, DENORMALIZER, \ 3342 MERGER, EXTRACTOR, TABLE_INDEX) \ 3343 GENERATE_OPTION_WITH_MARSHALLING( \ 3344 Args, SA, KIND, FLAGS, SPELLING, ALWAYS_EMIT, KEYPATH, DEFAULT_VALUE, \ 3345 IMPLIED_CHECK, IMPLIED_VALUE, DENORMALIZER, EXTRACTOR, TABLE_INDEX) 3346 #include "clang/Driver/Options.inc" 3347 #undef LANG_OPTION_WITH_MARSHALLING 3348 3349 // The '-fcf-protection=' option is generated by CodeGenOpts generator. 3350 3351 if (Opts.ObjC) { 3352 GenerateArg(Args, OPT_fobjc_runtime_EQ, Opts.ObjCRuntime.getAsString(), SA); 3353 3354 if (Opts.GC == LangOptions::GCOnly) 3355 GenerateArg(Args, OPT_fobjc_gc_only, SA); 3356 else if (Opts.GC == LangOptions::HybridGC) 3357 GenerateArg(Args, OPT_fobjc_gc, SA); 3358 else if (Opts.ObjCAutoRefCount == 1) 3359 GenerateArg(Args, OPT_fobjc_arc, SA); 3360 3361 if (Opts.ObjCWeakRuntime) 3362 GenerateArg(Args, OPT_fobjc_runtime_has_weak, SA); 3363 3364 if (Opts.ObjCWeak) 3365 GenerateArg(Args, OPT_fobjc_weak, SA); 3366 3367 if (Opts.ObjCSubscriptingLegacyRuntime) 3368 GenerateArg(Args, OPT_fobjc_subscripting_legacy_runtime, SA); 3369 } 3370 3371 if (Opts.GNUCVersion != 0) { 3372 unsigned Major = Opts.GNUCVersion / 100 / 100; 3373 unsigned Minor = (Opts.GNUCVersion / 100) % 100; 3374 unsigned Patch = Opts.GNUCVersion % 100; 3375 GenerateArg(Args, OPT_fgnuc_version_EQ, 3376 Twine(Major) + "." + Twine(Minor) + "." + Twine(Patch), SA); 3377 } 3378 3379 if (Opts.IgnoreXCOFFVisibility) 3380 GenerateArg(Args, OPT_mignore_xcoff_visibility, SA); 3381 3382 if (Opts.SignedOverflowBehavior == LangOptions::SOB_Trapping) { 3383 GenerateArg(Args, OPT_ftrapv, SA); 3384 GenerateArg(Args, OPT_ftrapv_handler, Opts.OverflowHandler, SA); 3385 } else if (Opts.SignedOverflowBehavior == LangOptions::SOB_Defined) { 3386 GenerateArg(Args, OPT_fwrapv, SA); 3387 } 3388 3389 if (Opts.MSCompatibilityVersion != 0) { 3390 unsigned Major = Opts.MSCompatibilityVersion / 10000000; 3391 unsigned Minor = (Opts.MSCompatibilityVersion / 100000) % 100; 3392 unsigned Subminor = Opts.MSCompatibilityVersion % 100000; 3393 GenerateArg(Args, OPT_fms_compatibility_version, 3394 Twine(Major) + "." + Twine(Minor) + "." + Twine(Subminor), SA); 3395 } 3396 3397 if ((!Opts.GNUMode && !Opts.MSVCCompat && !Opts.CPlusPlus17) || T.isOSzOS()) { 3398 if (!Opts.Trigraphs) 3399 GenerateArg(Args, OPT_fno_trigraphs, SA); 3400 } else { 3401 if (Opts.Trigraphs) 3402 GenerateArg(Args, OPT_ftrigraphs, SA); 3403 } 3404 3405 if (Opts.Blocks && !(Opts.OpenCL && Opts.OpenCLVersion == 200)) 3406 GenerateArg(Args, OPT_fblocks, SA); 3407 3408 if (Opts.ConvergentFunctions && 3409 !(Opts.OpenCL || (Opts.CUDA && Opts.CUDAIsDevice) || Opts.SYCLIsDevice)) 3410 GenerateArg(Args, OPT_fconvergent_functions, SA); 3411 3412 if (Opts.NoBuiltin && !Opts.Freestanding) 3413 GenerateArg(Args, OPT_fno_builtin, SA); 3414 3415 if (!Opts.NoBuiltin) 3416 for (const auto &Func : Opts.NoBuiltinFuncs) 3417 GenerateArg(Args, OPT_fno_builtin_, Func, SA); 3418 3419 if (Opts.LongDoubleSize == 128) 3420 GenerateArg(Args, OPT_mlong_double_128, SA); 3421 else if (Opts.LongDoubleSize == 64) 3422 GenerateArg(Args, OPT_mlong_double_64, SA); 3423 else if (Opts.LongDoubleSize == 80) 3424 GenerateArg(Args, OPT_mlong_double_80, SA); 3425 3426 // Not generating '-mrtd', it's just an alias for '-fdefault-calling-conv='. 3427 3428 // OpenMP was requested via '-fopenmp', not implied by '-fopenmp-simd' or 3429 // '-fopenmp-targets='. 3430 if (Opts.OpenMP && !Opts.OpenMPSimd) { 3431 GenerateArg(Args, OPT_fopenmp, SA); 3432 3433 if (Opts.OpenMP != 50) 3434 GenerateArg(Args, OPT_fopenmp_version_EQ, Twine(Opts.OpenMP), SA); 3435 3436 if (!Opts.OpenMPUseTLS) 3437 GenerateArg(Args, OPT_fnoopenmp_use_tls, SA); 3438 3439 if (Opts.OpenMPIsDevice) 3440 GenerateArg(Args, OPT_fopenmp_is_device, SA); 3441 3442 if (Opts.OpenMPIRBuilder) 3443 GenerateArg(Args, OPT_fopenmp_enable_irbuilder, SA); 3444 } 3445 3446 if (Opts.OpenMPSimd) { 3447 GenerateArg(Args, OPT_fopenmp_simd, SA); 3448 3449 if (Opts.OpenMP != 50) 3450 GenerateArg(Args, OPT_fopenmp_version_EQ, Twine(Opts.OpenMP), SA); 3451 } 3452 3453 if (Opts.OpenMPThreadSubscription) 3454 GenerateArg(Args, OPT_fopenmp_assume_threads_oversubscription, SA); 3455 3456 if (Opts.OpenMPTeamSubscription) 3457 GenerateArg(Args, OPT_fopenmp_assume_teams_oversubscription, SA); 3458 3459 if (Opts.OpenMPTargetDebug != 0) 3460 GenerateArg(Args, OPT_fopenmp_target_debug_EQ, 3461 Twine(Opts.OpenMPTargetDebug), SA); 3462 3463 if (Opts.OpenMPCUDANumSMs != 0) 3464 GenerateArg(Args, OPT_fopenmp_cuda_number_of_sm_EQ, 3465 Twine(Opts.OpenMPCUDANumSMs), SA); 3466 3467 if (Opts.OpenMPCUDABlocksPerSM != 0) 3468 GenerateArg(Args, OPT_fopenmp_cuda_blocks_per_sm_EQ, 3469 Twine(Opts.OpenMPCUDABlocksPerSM), SA); 3470 3471 if (Opts.OpenMPCUDAReductionBufNum != 1024) 3472 GenerateArg(Args, OPT_fopenmp_cuda_teams_reduction_recs_num_EQ, 3473 Twine(Opts.OpenMPCUDAReductionBufNum), SA); 3474 3475 if (!Opts.OMPTargetTriples.empty()) { 3476 std::string Targets; 3477 llvm::raw_string_ostream OS(Targets); 3478 llvm::interleave( 3479 Opts.OMPTargetTriples, OS, 3480 [&OS](const llvm::Triple &T) { OS << T.str(); }, ","); 3481 GenerateArg(Args, OPT_fopenmp_targets_EQ, OS.str(), SA); 3482 } 3483 3484 if (!Opts.OMPHostIRFile.empty()) 3485 GenerateArg(Args, OPT_fopenmp_host_ir_file_path, Opts.OMPHostIRFile, SA); 3486 3487 if (Opts.OpenMPCUDAMode) 3488 GenerateArg(Args, OPT_fopenmp_cuda_mode, SA); 3489 3490 // The arguments used to set Optimize, OptimizeSize and NoInlineDefine are 3491 // generated from CodeGenOptions. 3492 3493 if (Opts.DefaultFPContractMode == LangOptions::FPM_Fast) 3494 GenerateArg(Args, OPT_ffp_contract, "fast", SA); 3495 else if (Opts.DefaultFPContractMode == LangOptions::FPM_On) 3496 GenerateArg(Args, OPT_ffp_contract, "on", SA); 3497 else if (Opts.DefaultFPContractMode == LangOptions::FPM_Off) 3498 GenerateArg(Args, OPT_ffp_contract, "off", SA); 3499 else if (Opts.DefaultFPContractMode == LangOptions::FPM_FastHonorPragmas) 3500 GenerateArg(Args, OPT_ffp_contract, "fast-honor-pragmas", SA); 3501 3502 for (StringRef Sanitizer : serializeSanitizerKinds(Opts.Sanitize)) 3503 GenerateArg(Args, OPT_fsanitize_EQ, Sanitizer, SA); 3504 3505 // Conflating '-fsanitize-system-ignorelist' and '-fsanitize-ignorelist'. 3506 for (const std::string &F : Opts.NoSanitizeFiles) 3507 GenerateArg(Args, OPT_fsanitize_ignorelist_EQ, F, SA); 3508 3509 if (Opts.getClangABICompat() == LangOptions::ClangABI::Ver3_8) 3510 GenerateArg(Args, OPT_fclang_abi_compat_EQ, "3.8", SA); 3511 else if (Opts.getClangABICompat() == LangOptions::ClangABI::Ver4) 3512 GenerateArg(Args, OPT_fclang_abi_compat_EQ, "4.0", SA); 3513 else if (Opts.getClangABICompat() == LangOptions::ClangABI::Ver6) 3514 GenerateArg(Args, OPT_fclang_abi_compat_EQ, "6.0", SA); 3515 else if (Opts.getClangABICompat() == LangOptions::ClangABI::Ver7) 3516 GenerateArg(Args, OPT_fclang_abi_compat_EQ, "7.0", SA); 3517 else if (Opts.getClangABICompat() == LangOptions::ClangABI::Ver9) 3518 GenerateArg(Args, OPT_fclang_abi_compat_EQ, "9.0", SA); 3519 else if (Opts.getClangABICompat() == LangOptions::ClangABI::Ver11) 3520 GenerateArg(Args, OPT_fclang_abi_compat_EQ, "11.0", SA); 3521 else if (Opts.getClangABICompat() == LangOptions::ClangABI::Ver12) 3522 GenerateArg(Args, OPT_fclang_abi_compat_EQ, "12.0", SA); 3523 else if (Opts.getClangABICompat() == LangOptions::ClangABI::Ver14) 3524 GenerateArg(Args, OPT_fclang_abi_compat_EQ, "14.0", SA); 3525 else if (Opts.getClangABICompat() == LangOptions::ClangABI::Ver15) 3526 GenerateArg(Args, OPT_fclang_abi_compat_EQ, "15.0", SA); 3527 3528 if (Opts.getSignReturnAddressScope() == 3529 LangOptions::SignReturnAddressScopeKind::All) 3530 GenerateArg(Args, OPT_msign_return_address_EQ, "all", SA); 3531 else if (Opts.getSignReturnAddressScope() == 3532 LangOptions::SignReturnAddressScopeKind::NonLeaf) 3533 GenerateArg(Args, OPT_msign_return_address_EQ, "non-leaf", SA); 3534 3535 if (Opts.getSignReturnAddressKey() == 3536 LangOptions::SignReturnAddressKeyKind::BKey) 3537 GenerateArg(Args, OPT_msign_return_address_key_EQ, "b_key", SA); 3538 3539 if (Opts.CXXABI) 3540 GenerateArg(Args, OPT_fcxx_abi_EQ, TargetCXXABI::getSpelling(*Opts.CXXABI), 3541 SA); 3542 3543 if (Opts.RelativeCXXABIVTables) 3544 GenerateArg(Args, OPT_fexperimental_relative_cxx_abi_vtables, SA); 3545 else 3546 GenerateArg(Args, OPT_fno_experimental_relative_cxx_abi_vtables, SA); 3547 3548 if (Opts.UseTargetPathSeparator) 3549 GenerateArg(Args, OPT_ffile_reproducible, SA); 3550 else 3551 GenerateArg(Args, OPT_fno_file_reproducible, SA); 3552 3553 for (const auto &MP : Opts.MacroPrefixMap) 3554 GenerateArg(Args, OPT_fmacro_prefix_map_EQ, MP.first + "=" + MP.second, SA); 3555 3556 if (!Opts.RandstructSeed.empty()) 3557 GenerateArg(Args, OPT_frandomize_layout_seed_EQ, Opts.RandstructSeed, SA); 3558 } 3559 3560 bool CompilerInvocation::ParseLangArgs(LangOptions &Opts, ArgList &Args, 3561 InputKind IK, const llvm::Triple &T, 3562 std::vector<std::string> &Includes, 3563 DiagnosticsEngine &Diags) { 3564 unsigned NumErrorsBefore = Diags.getNumErrors(); 3565 3566 if (IK.getFormat() == InputKind::Precompiled || 3567 IK.getLanguage() == Language::LLVM_IR) { 3568 // ObjCAAutoRefCount and Sanitize LangOpts are used to setup the 3569 // PassManager in BackendUtil.cpp. They need to be initialized no matter 3570 // what the input type is. 3571 if (Args.hasArg(OPT_fobjc_arc)) 3572 Opts.ObjCAutoRefCount = 1; 3573 // PICLevel and PIELevel are needed during code generation and this should 3574 // be set regardless of the input type. 3575 Opts.PICLevel = getLastArgIntValue(Args, OPT_pic_level, 0, Diags); 3576 Opts.PIE = Args.hasArg(OPT_pic_is_pie); 3577 parseSanitizerKinds("-fsanitize=", Args.getAllArgValues(OPT_fsanitize_EQ), 3578 Diags, Opts.Sanitize); 3579 3580 return Diags.getNumErrors() == NumErrorsBefore; 3581 } 3582 3583 // Other LangOpts are only initialized when the input is not AST or LLVM IR. 3584 // FIXME: Should we really be parsing this for an Language::Asm input? 3585 3586 // FIXME: Cleanup per-file based stuff. 3587 LangStandard::Kind LangStd = LangStandard::lang_unspecified; 3588 if (const Arg *A = Args.getLastArg(OPT_std_EQ)) { 3589 LangStd = LangStandard::getLangKind(A->getValue()); 3590 if (LangStd == LangStandard::lang_unspecified) { 3591 Diags.Report(diag::err_drv_invalid_value) 3592 << A->getAsString(Args) << A->getValue(); 3593 // Report supported standards with short description. 3594 for (unsigned KindValue = 0; 3595 KindValue != LangStandard::lang_unspecified; 3596 ++KindValue) { 3597 const LangStandard &Std = LangStandard::getLangStandardForKind( 3598 static_cast<LangStandard::Kind>(KindValue)); 3599 if (IsInputCompatibleWithStandard(IK, Std)) { 3600 auto Diag = Diags.Report(diag::note_drv_use_standard); 3601 Diag << Std.getName() << Std.getDescription(); 3602 unsigned NumAliases = 0; 3603 #define LANGSTANDARD(id, name, lang, desc, features) 3604 #define LANGSTANDARD_ALIAS(id, alias) \ 3605 if (KindValue == LangStandard::lang_##id) ++NumAliases; 3606 #define LANGSTANDARD_ALIAS_DEPR(id, alias) 3607 #include "clang/Basic/LangStandards.def" 3608 Diag << NumAliases; 3609 #define LANGSTANDARD(id, name, lang, desc, features) 3610 #define LANGSTANDARD_ALIAS(id, alias) \ 3611 if (KindValue == LangStandard::lang_##id) Diag << alias; 3612 #define LANGSTANDARD_ALIAS_DEPR(id, alias) 3613 #include "clang/Basic/LangStandards.def" 3614 } 3615 } 3616 } else { 3617 // Valid standard, check to make sure language and standard are 3618 // compatible. 3619 const LangStandard &Std = LangStandard::getLangStandardForKind(LangStd); 3620 if (!IsInputCompatibleWithStandard(IK, Std)) { 3621 Diags.Report(diag::err_drv_argument_not_allowed_with) 3622 << A->getAsString(Args) << GetInputKindName(IK); 3623 } 3624 } 3625 } 3626 3627 // -cl-std only applies for OpenCL language standards. 3628 // Override the -std option in this case. 3629 if (const Arg *A = Args.getLastArg(OPT_cl_std_EQ)) { 3630 LangStandard::Kind OpenCLLangStd 3631 = llvm::StringSwitch<LangStandard::Kind>(A->getValue()) 3632 .Cases("cl", "CL", LangStandard::lang_opencl10) 3633 .Cases("cl1.0", "CL1.0", LangStandard::lang_opencl10) 3634 .Cases("cl1.1", "CL1.1", LangStandard::lang_opencl11) 3635 .Cases("cl1.2", "CL1.2", LangStandard::lang_opencl12) 3636 .Cases("cl2.0", "CL2.0", LangStandard::lang_opencl20) 3637 .Cases("cl3.0", "CL3.0", LangStandard::lang_opencl30) 3638 .Cases("clc++", "CLC++", LangStandard::lang_openclcpp10) 3639 .Cases("clc++1.0", "CLC++1.0", LangStandard::lang_openclcpp10) 3640 .Cases("clc++2021", "CLC++2021", LangStandard::lang_openclcpp2021) 3641 .Default(LangStandard::lang_unspecified); 3642 3643 if (OpenCLLangStd == LangStandard::lang_unspecified) { 3644 Diags.Report(diag::err_drv_invalid_value) 3645 << A->getAsString(Args) << A->getValue(); 3646 } 3647 else 3648 LangStd = OpenCLLangStd; 3649 } 3650 3651 // These need to be parsed now. They are used to set OpenCL defaults. 3652 Opts.IncludeDefaultHeader = Args.hasArg(OPT_finclude_default_header); 3653 Opts.DeclareOpenCLBuiltins = Args.hasArg(OPT_fdeclare_opencl_builtins); 3654 3655 LangOptions::setLangDefaults(Opts, IK.getLanguage(), T, Includes, LangStd); 3656 3657 // The key paths of codegen options defined in Options.td start with 3658 // "LangOpts->". Let's provide the expected variable name and type. 3659 LangOptions *LangOpts = &Opts; 3660 3661 #define LANG_OPTION_WITH_MARSHALLING( \ 3662 PREFIX_TYPE, NAME, ID, KIND, GROUP, ALIAS, ALIASARGS, FLAGS, PARAM, \ 3663 HELPTEXT, METAVAR, VALUES, SPELLING, SHOULD_PARSE, ALWAYS_EMIT, KEYPATH, \ 3664 DEFAULT_VALUE, IMPLIED_CHECK, IMPLIED_VALUE, NORMALIZER, DENORMALIZER, \ 3665 MERGER, EXTRACTOR, TABLE_INDEX) \ 3666 PARSE_OPTION_WITH_MARSHALLING( \ 3667 Args, Diags, ID, FLAGS, PARAM, SHOULD_PARSE, KEYPATH, DEFAULT_VALUE, \ 3668 IMPLIED_CHECK, IMPLIED_VALUE, NORMALIZER, MERGER, TABLE_INDEX) 3669 #include "clang/Driver/Options.inc" 3670 #undef LANG_OPTION_WITH_MARSHALLING 3671 3672 if (const Arg *A = Args.getLastArg(OPT_fcf_protection_EQ)) { 3673 StringRef Name = A->getValue(); 3674 if (Name == "full" || Name == "branch") { 3675 Opts.CFProtectionBranch = 1; 3676 } 3677 } 3678 3679 if ((Args.hasArg(OPT_fsycl_is_device) || Args.hasArg(OPT_fsycl_is_host)) && 3680 !Args.hasArg(OPT_sycl_std_EQ)) { 3681 // If the user supplied -fsycl-is-device or -fsycl-is-host, but failed to 3682 // provide -sycl-std=, we want to default it to whatever the default SYCL 3683 // version is. I could not find a way to express this with the options 3684 // tablegen because we still want this value to be SYCL_None when the user 3685 // is not in device or host mode. 3686 Opts.setSYCLVersion(LangOptions::SYCL_Default); 3687 } 3688 3689 if (Opts.ObjC) { 3690 if (Arg *arg = Args.getLastArg(OPT_fobjc_runtime_EQ)) { 3691 StringRef value = arg->getValue(); 3692 if (Opts.ObjCRuntime.tryParse(value)) 3693 Diags.Report(diag::err_drv_unknown_objc_runtime) << value; 3694 } 3695 3696 if (Args.hasArg(OPT_fobjc_gc_only)) 3697 Opts.setGC(LangOptions::GCOnly); 3698 else if (Args.hasArg(OPT_fobjc_gc)) 3699 Opts.setGC(LangOptions::HybridGC); 3700 else if (Args.hasArg(OPT_fobjc_arc)) { 3701 Opts.ObjCAutoRefCount = 1; 3702 if (!Opts.ObjCRuntime.allowsARC()) 3703 Diags.Report(diag::err_arc_unsupported_on_runtime); 3704 } 3705 3706 // ObjCWeakRuntime tracks whether the runtime supports __weak, not 3707 // whether the feature is actually enabled. This is predominantly 3708 // determined by -fobjc-runtime, but we allow it to be overridden 3709 // from the command line for testing purposes. 3710 if (Args.hasArg(OPT_fobjc_runtime_has_weak)) 3711 Opts.ObjCWeakRuntime = 1; 3712 else 3713 Opts.ObjCWeakRuntime = Opts.ObjCRuntime.allowsWeak(); 3714 3715 // ObjCWeak determines whether __weak is actually enabled. 3716 // Note that we allow -fno-objc-weak to disable this even in ARC mode. 3717 if (auto weakArg = Args.getLastArg(OPT_fobjc_weak, OPT_fno_objc_weak)) { 3718 if (!weakArg->getOption().matches(OPT_fobjc_weak)) { 3719 assert(!Opts.ObjCWeak); 3720 } else if (Opts.getGC() != LangOptions::NonGC) { 3721 Diags.Report(diag::err_objc_weak_with_gc); 3722 } else if (!Opts.ObjCWeakRuntime) { 3723 Diags.Report(diag::err_objc_weak_unsupported); 3724 } else { 3725 Opts.ObjCWeak = 1; 3726 } 3727 } else if (Opts.ObjCAutoRefCount) { 3728 Opts.ObjCWeak = Opts.ObjCWeakRuntime; 3729 } 3730 3731 if (Args.hasArg(OPT_fobjc_subscripting_legacy_runtime)) 3732 Opts.ObjCSubscriptingLegacyRuntime = 3733 (Opts.ObjCRuntime.getKind() == ObjCRuntime::FragileMacOSX); 3734 } 3735 3736 if (Arg *A = Args.getLastArg(options::OPT_fgnuc_version_EQ)) { 3737 // Check that the version has 1 to 3 components and the minor and patch 3738 // versions fit in two decimal digits. 3739 VersionTuple GNUCVer; 3740 bool Invalid = GNUCVer.tryParse(A->getValue()); 3741 unsigned Major = GNUCVer.getMajor(); 3742 unsigned Minor = GNUCVer.getMinor().value_or(0); 3743 unsigned Patch = GNUCVer.getSubminor().value_or(0); 3744 if (Invalid || GNUCVer.getBuild() || Minor >= 100 || Patch >= 100) { 3745 Diags.Report(diag::err_drv_invalid_value) 3746 << A->getAsString(Args) << A->getValue(); 3747 } 3748 Opts.GNUCVersion = Major * 100 * 100 + Minor * 100 + Patch; 3749 } 3750 3751 if (T.isOSAIX() && (Args.hasArg(OPT_mignore_xcoff_visibility))) 3752 Opts.IgnoreXCOFFVisibility = 1; 3753 3754 if (Args.hasArg(OPT_ftrapv)) { 3755 Opts.setSignedOverflowBehavior(LangOptions::SOB_Trapping); 3756 // Set the handler, if one is specified. 3757 Opts.OverflowHandler = 3758 std::string(Args.getLastArgValue(OPT_ftrapv_handler)); 3759 } 3760 else if (Args.hasArg(OPT_fwrapv)) 3761 Opts.setSignedOverflowBehavior(LangOptions::SOB_Defined); 3762 3763 Opts.MSCompatibilityVersion = 0; 3764 if (const Arg *A = Args.getLastArg(OPT_fms_compatibility_version)) { 3765 VersionTuple VT; 3766 if (VT.tryParse(A->getValue())) 3767 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) 3768 << A->getValue(); 3769 Opts.MSCompatibilityVersion = VT.getMajor() * 10000000 + 3770 VT.getMinor().value_or(0) * 100000 + 3771 VT.getSubminor().value_or(0); 3772 } 3773 3774 // Mimicking gcc's behavior, trigraphs are only enabled if -trigraphs 3775 // is specified, or -std is set to a conforming mode. 3776 // Trigraphs are disabled by default in c++1z onwards. 3777 // For z/OS, trigraphs are enabled by default (without regard to the above). 3778 Opts.Trigraphs = 3779 (!Opts.GNUMode && !Opts.MSVCCompat && !Opts.CPlusPlus17) || T.isOSzOS(); 3780 Opts.Trigraphs = 3781 Args.hasFlag(OPT_ftrigraphs, OPT_fno_trigraphs, Opts.Trigraphs); 3782 3783 Opts.Blocks = Args.hasArg(OPT_fblocks) || (Opts.OpenCL 3784 && Opts.OpenCLVersion == 200); 3785 3786 Opts.ConvergentFunctions = Opts.OpenCL || (Opts.CUDA && Opts.CUDAIsDevice) || 3787 Opts.SYCLIsDevice || 3788 Args.hasArg(OPT_fconvergent_functions); 3789 3790 Opts.NoBuiltin = Args.hasArg(OPT_fno_builtin) || Opts.Freestanding; 3791 if (!Opts.NoBuiltin) 3792 getAllNoBuiltinFuncValues(Args, Opts.NoBuiltinFuncs); 3793 if (Arg *A = Args.getLastArg(options::OPT_LongDouble_Group)) { 3794 if (A->getOption().matches(options::OPT_mlong_double_64)) 3795 Opts.LongDoubleSize = 64; 3796 else if (A->getOption().matches(options::OPT_mlong_double_80)) 3797 Opts.LongDoubleSize = 80; 3798 else if (A->getOption().matches(options::OPT_mlong_double_128)) 3799 Opts.LongDoubleSize = 128; 3800 else 3801 Opts.LongDoubleSize = 0; 3802 } 3803 if (Opts.FastRelaxedMath) 3804 Opts.setDefaultFPContractMode(LangOptions::FPM_Fast); 3805 3806 llvm::sort(Opts.ModuleFeatures); 3807 3808 // -mrtd option 3809 if (Arg *A = Args.getLastArg(OPT_mrtd)) { 3810 if (Opts.getDefaultCallingConv() != LangOptions::DCC_None) 3811 Diags.Report(diag::err_drv_argument_not_allowed_with) 3812 << A->getSpelling() << "-fdefault-calling-conv"; 3813 else { 3814 if (T.getArch() != llvm::Triple::x86) 3815 Diags.Report(diag::err_drv_argument_not_allowed_with) 3816 << A->getSpelling() << T.getTriple(); 3817 else 3818 Opts.setDefaultCallingConv(LangOptions::DCC_StdCall); 3819 } 3820 } 3821 3822 // Check if -fopenmp is specified and set default version to 5.0. 3823 Opts.OpenMP = Args.hasArg(OPT_fopenmp) ? 50 : 0; 3824 // Check if -fopenmp-simd is specified. 3825 bool IsSimdSpecified = 3826 Args.hasFlag(options::OPT_fopenmp_simd, options::OPT_fno_openmp_simd, 3827 /*Default=*/false); 3828 Opts.OpenMPSimd = !Opts.OpenMP && IsSimdSpecified; 3829 Opts.OpenMPUseTLS = 3830 Opts.OpenMP && !Args.hasArg(options::OPT_fnoopenmp_use_tls); 3831 Opts.OpenMPIsDevice = 3832 Opts.OpenMP && Args.hasArg(options::OPT_fopenmp_is_device); 3833 Opts.OpenMPIRBuilder = 3834 Opts.OpenMP && Args.hasArg(options::OPT_fopenmp_enable_irbuilder); 3835 bool IsTargetSpecified = 3836 Opts.OpenMPIsDevice || Args.hasArg(options::OPT_fopenmp_targets_EQ); 3837 3838 Opts.ConvergentFunctions = Opts.ConvergentFunctions || Opts.OpenMPIsDevice; 3839 3840 if (Opts.OpenMP || Opts.OpenMPSimd) { 3841 if (int Version = getLastArgIntValue( 3842 Args, OPT_fopenmp_version_EQ, 3843 (IsSimdSpecified || IsTargetSpecified) ? 50 : Opts.OpenMP, Diags)) 3844 Opts.OpenMP = Version; 3845 // Provide diagnostic when a given target is not expected to be an OpenMP 3846 // device or host. 3847 if (!Opts.OpenMPIsDevice) { 3848 switch (T.getArch()) { 3849 default: 3850 break; 3851 // Add unsupported host targets here: 3852 case llvm::Triple::nvptx: 3853 case llvm::Triple::nvptx64: 3854 Diags.Report(diag::err_drv_omp_host_target_not_supported) << T.str(); 3855 break; 3856 } 3857 } 3858 } 3859 3860 // Set the flag to prevent the implementation from emitting device exception 3861 // handling code for those requiring so. 3862 if ((Opts.OpenMPIsDevice && (T.isNVPTX() || T.isAMDGCN())) || 3863 Opts.OpenCLCPlusPlus) { 3864 3865 Opts.Exceptions = 0; 3866 Opts.CXXExceptions = 0; 3867 } 3868 if (Opts.OpenMPIsDevice && T.isNVPTX()) { 3869 Opts.OpenMPCUDANumSMs = 3870 getLastArgIntValue(Args, options::OPT_fopenmp_cuda_number_of_sm_EQ, 3871 Opts.OpenMPCUDANumSMs, Diags); 3872 Opts.OpenMPCUDABlocksPerSM = 3873 getLastArgIntValue(Args, options::OPT_fopenmp_cuda_blocks_per_sm_EQ, 3874 Opts.OpenMPCUDABlocksPerSM, Diags); 3875 Opts.OpenMPCUDAReductionBufNum = getLastArgIntValue( 3876 Args, options::OPT_fopenmp_cuda_teams_reduction_recs_num_EQ, 3877 Opts.OpenMPCUDAReductionBufNum, Diags); 3878 } 3879 3880 // Set the value of the debugging flag used in the new offloading device RTL. 3881 // Set either by a specific value or to a default if not specified. 3882 if (Opts.OpenMPIsDevice && (Args.hasArg(OPT_fopenmp_target_debug) || 3883 Args.hasArg(OPT_fopenmp_target_debug_EQ))) { 3884 Opts.OpenMPTargetDebug = getLastArgIntValue( 3885 Args, OPT_fopenmp_target_debug_EQ, Opts.OpenMPTargetDebug, Diags); 3886 if (!Opts.OpenMPTargetDebug && Args.hasArg(OPT_fopenmp_target_debug)) 3887 Opts.OpenMPTargetDebug = 1; 3888 } 3889 3890 if (Opts.OpenMPIsDevice) { 3891 if (Args.hasArg(OPT_fopenmp_assume_teams_oversubscription)) 3892 Opts.OpenMPTeamSubscription = true; 3893 if (Args.hasArg(OPT_fopenmp_assume_threads_oversubscription)) 3894 Opts.OpenMPThreadSubscription = true; 3895 } 3896 3897 // Get the OpenMP target triples if any. 3898 if (Arg *A = Args.getLastArg(options::OPT_fopenmp_targets_EQ)) { 3899 enum ArchPtrSize { Arch16Bit, Arch32Bit, Arch64Bit }; 3900 auto getArchPtrSize = [](const llvm::Triple &T) { 3901 if (T.isArch16Bit()) 3902 return Arch16Bit; 3903 if (T.isArch32Bit()) 3904 return Arch32Bit; 3905 assert(T.isArch64Bit() && "Expected 64-bit architecture"); 3906 return Arch64Bit; 3907 }; 3908 3909 for (unsigned i = 0; i < A->getNumValues(); ++i) { 3910 llvm::Triple TT(A->getValue(i)); 3911 3912 if (TT.getArch() == llvm::Triple::UnknownArch || 3913 !(TT.getArch() == llvm::Triple::aarch64 || TT.isPPC() || 3914 TT.getArch() == llvm::Triple::nvptx || 3915 TT.getArch() == llvm::Triple::nvptx64 || 3916 TT.getArch() == llvm::Triple::amdgcn || 3917 TT.getArch() == llvm::Triple::x86 || 3918 TT.getArch() == llvm::Triple::x86_64)) 3919 Diags.Report(diag::err_drv_invalid_omp_target) << A->getValue(i); 3920 else if (getArchPtrSize(T) != getArchPtrSize(TT)) 3921 Diags.Report(diag::err_drv_incompatible_omp_arch) 3922 << A->getValue(i) << T.str(); 3923 else 3924 Opts.OMPTargetTriples.push_back(TT); 3925 } 3926 } 3927 3928 // Get OpenMP host file path if any and report if a non existent file is 3929 // found 3930 if (Arg *A = Args.getLastArg(options::OPT_fopenmp_host_ir_file_path)) { 3931 Opts.OMPHostIRFile = A->getValue(); 3932 if (!llvm::sys::fs::exists(Opts.OMPHostIRFile)) 3933 Diags.Report(diag::err_drv_omp_host_ir_file_not_found) 3934 << Opts.OMPHostIRFile; 3935 } 3936 3937 // Set CUDA mode for OpenMP target NVPTX/AMDGCN if specified in options 3938 Opts.OpenMPCUDAMode = Opts.OpenMPIsDevice && (T.isNVPTX() || T.isAMDGCN()) && 3939 Args.hasArg(options::OPT_fopenmp_cuda_mode); 3940 3941 // FIXME: Eliminate this dependency. 3942 unsigned Opt = getOptimizationLevel(Args, IK, Diags), 3943 OptSize = getOptimizationLevelSize(Args); 3944 Opts.Optimize = Opt != 0; 3945 Opts.OptimizeSize = OptSize != 0; 3946 3947 // This is the __NO_INLINE__ define, which just depends on things like the 3948 // optimization level and -fno-inline, not actually whether the backend has 3949 // inlining enabled. 3950 Opts.NoInlineDefine = !Opts.Optimize; 3951 if (Arg *InlineArg = Args.getLastArg( 3952 options::OPT_finline_functions, options::OPT_finline_hint_functions, 3953 options::OPT_fno_inline_functions, options::OPT_fno_inline)) 3954 if (InlineArg->getOption().matches(options::OPT_fno_inline)) 3955 Opts.NoInlineDefine = true; 3956 3957 if (Arg *A = Args.getLastArg(OPT_ffp_contract)) { 3958 StringRef Val = A->getValue(); 3959 if (Val == "fast") 3960 Opts.setDefaultFPContractMode(LangOptions::FPM_Fast); 3961 else if (Val == "on") 3962 Opts.setDefaultFPContractMode(LangOptions::FPM_On); 3963 else if (Val == "off") 3964 Opts.setDefaultFPContractMode(LangOptions::FPM_Off); 3965 else if (Val == "fast-honor-pragmas") 3966 Opts.setDefaultFPContractMode(LangOptions::FPM_FastHonorPragmas); 3967 else 3968 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Val; 3969 } 3970 3971 // Parse -fsanitize= arguments. 3972 parseSanitizerKinds("-fsanitize=", Args.getAllArgValues(OPT_fsanitize_EQ), 3973 Diags, Opts.Sanitize); 3974 Opts.NoSanitizeFiles = Args.getAllArgValues(OPT_fsanitize_ignorelist_EQ); 3975 std::vector<std::string> systemIgnorelists = 3976 Args.getAllArgValues(OPT_fsanitize_system_ignorelist_EQ); 3977 Opts.NoSanitizeFiles.insert(Opts.NoSanitizeFiles.end(), 3978 systemIgnorelists.begin(), 3979 systemIgnorelists.end()); 3980 3981 if (Arg *A = Args.getLastArg(OPT_fclang_abi_compat_EQ)) { 3982 Opts.setClangABICompat(LangOptions::ClangABI::Latest); 3983 3984 StringRef Ver = A->getValue(); 3985 std::pair<StringRef, StringRef> VerParts = Ver.split('.'); 3986 unsigned Major, Minor = 0; 3987 3988 // Check the version number is valid: either 3.x (0 <= x <= 9) or 3989 // y or y.0 (4 <= y <= current version). 3990 if (!VerParts.first.startswith("0") && 3991 !VerParts.first.getAsInteger(10, Major) && 3992 3 <= Major && Major <= CLANG_VERSION_MAJOR && 3993 (Major == 3 ? VerParts.second.size() == 1 && 3994 !VerParts.second.getAsInteger(10, Minor) 3995 : VerParts.first.size() == Ver.size() || 3996 VerParts.second == "0")) { 3997 // Got a valid version number. 3998 if (Major == 3 && Minor <= 8) 3999 Opts.setClangABICompat(LangOptions::ClangABI::Ver3_8); 4000 else if (Major <= 4) 4001 Opts.setClangABICompat(LangOptions::ClangABI::Ver4); 4002 else if (Major <= 6) 4003 Opts.setClangABICompat(LangOptions::ClangABI::Ver6); 4004 else if (Major <= 7) 4005 Opts.setClangABICompat(LangOptions::ClangABI::Ver7); 4006 else if (Major <= 9) 4007 Opts.setClangABICompat(LangOptions::ClangABI::Ver9); 4008 else if (Major <= 11) 4009 Opts.setClangABICompat(LangOptions::ClangABI::Ver11); 4010 else if (Major <= 12) 4011 Opts.setClangABICompat(LangOptions::ClangABI::Ver12); 4012 else if (Major <= 14) 4013 Opts.setClangABICompat(LangOptions::ClangABI::Ver14); 4014 else if (Major <= 15) 4015 Opts.setClangABICompat(LangOptions::ClangABI::Ver15); 4016 } else if (Ver != "latest") { 4017 Diags.Report(diag::err_drv_invalid_value) 4018 << A->getAsString(Args) << A->getValue(); 4019 } 4020 } 4021 4022 if (Arg *A = Args.getLastArg(OPT_msign_return_address_EQ)) { 4023 StringRef SignScope = A->getValue(); 4024 4025 if (SignScope.equals_insensitive("none")) 4026 Opts.setSignReturnAddressScope( 4027 LangOptions::SignReturnAddressScopeKind::None); 4028 else if (SignScope.equals_insensitive("all")) 4029 Opts.setSignReturnAddressScope( 4030 LangOptions::SignReturnAddressScopeKind::All); 4031 else if (SignScope.equals_insensitive("non-leaf")) 4032 Opts.setSignReturnAddressScope( 4033 LangOptions::SignReturnAddressScopeKind::NonLeaf); 4034 else 4035 Diags.Report(diag::err_drv_invalid_value) 4036 << A->getAsString(Args) << SignScope; 4037 4038 if (Arg *A = Args.getLastArg(OPT_msign_return_address_key_EQ)) { 4039 StringRef SignKey = A->getValue(); 4040 if (!SignScope.empty() && !SignKey.empty()) { 4041 if (SignKey.equals_insensitive("a_key")) 4042 Opts.setSignReturnAddressKey( 4043 LangOptions::SignReturnAddressKeyKind::AKey); 4044 else if (SignKey.equals_insensitive("b_key")) 4045 Opts.setSignReturnAddressKey( 4046 LangOptions::SignReturnAddressKeyKind::BKey); 4047 else 4048 Diags.Report(diag::err_drv_invalid_value) 4049 << A->getAsString(Args) << SignKey; 4050 } 4051 } 4052 } 4053 4054 // The value can be empty, which indicates the system default should be used. 4055 StringRef CXXABI = Args.getLastArgValue(OPT_fcxx_abi_EQ); 4056 if (!CXXABI.empty()) { 4057 if (!TargetCXXABI::isABI(CXXABI)) { 4058 Diags.Report(diag::err_invalid_cxx_abi) << CXXABI; 4059 } else { 4060 auto Kind = TargetCXXABI::getKind(CXXABI); 4061 if (!TargetCXXABI::isSupportedCXXABI(T, Kind)) 4062 Diags.Report(diag::err_unsupported_cxx_abi) << CXXABI << T.str(); 4063 else 4064 Opts.CXXABI = Kind; 4065 } 4066 } 4067 4068 Opts.RelativeCXXABIVTables = 4069 Args.hasFlag(options::OPT_fexperimental_relative_cxx_abi_vtables, 4070 options::OPT_fno_experimental_relative_cxx_abi_vtables, 4071 TargetCXXABI::usesRelativeVTables(T)); 4072 4073 for (const auto &A : Args.getAllArgValues(OPT_fmacro_prefix_map_EQ)) { 4074 auto Split = StringRef(A).split('='); 4075 Opts.MacroPrefixMap.insert( 4076 {std::string(Split.first), std::string(Split.second)}); 4077 } 4078 4079 Opts.UseTargetPathSeparator = 4080 !Args.getLastArg(OPT_fno_file_reproducible) && 4081 (Args.getLastArg(OPT_ffile_compilation_dir_EQ) || 4082 Args.getLastArg(OPT_fmacro_prefix_map_EQ) || 4083 Args.getLastArg(OPT_ffile_reproducible)); 4084 4085 // Error if -mvscale-min is unbounded. 4086 if (Arg *A = Args.getLastArg(options::OPT_mvscale_min_EQ)) { 4087 unsigned VScaleMin; 4088 if (StringRef(A->getValue()).getAsInteger(10, VScaleMin) || VScaleMin == 0) 4089 Diags.Report(diag::err_cc1_unbounded_vscale_min); 4090 } 4091 4092 if (const Arg *A = Args.getLastArg(OPT_frandomize_layout_seed_file_EQ)) { 4093 std::ifstream SeedFile(A->getValue(0)); 4094 4095 if (!SeedFile.is_open()) 4096 Diags.Report(diag::err_drv_cannot_open_randomize_layout_seed_file) 4097 << A->getValue(0); 4098 4099 std::getline(SeedFile, Opts.RandstructSeed); 4100 } 4101 4102 if (const Arg *A = Args.getLastArg(OPT_frandomize_layout_seed_EQ)) 4103 Opts.RandstructSeed = A->getValue(0); 4104 4105 // Validate options for HLSL 4106 if (Opts.HLSL) { 4107 bool SupportedTarget = T.getArch() == llvm::Triple::dxil && 4108 T.getOS() == llvm::Triple::ShaderModel; 4109 if (!SupportedTarget) 4110 Diags.Report(diag::err_drv_hlsl_unsupported_target) << T.str(); 4111 } 4112 4113 return Diags.getNumErrors() == NumErrorsBefore; 4114 } 4115 4116 static bool isStrictlyPreprocessorAction(frontend::ActionKind Action) { 4117 switch (Action) { 4118 case frontend::ASTDeclList: 4119 case frontend::ASTDump: 4120 case frontend::ASTPrint: 4121 case frontend::ASTView: 4122 case frontend::EmitAssembly: 4123 case frontend::EmitBC: 4124 case frontend::EmitHTML: 4125 case frontend::EmitLLVM: 4126 case frontend::EmitLLVMOnly: 4127 case frontend::EmitCodeGenOnly: 4128 case frontend::EmitObj: 4129 case frontend::ExtractAPI: 4130 case frontend::FixIt: 4131 case frontend::GenerateModule: 4132 case frontend::GenerateModuleInterface: 4133 case frontend::GenerateHeaderModule: 4134 case frontend::GenerateHeaderUnit: 4135 case frontend::GeneratePCH: 4136 case frontend::GenerateInterfaceStubs: 4137 case frontend::ParseSyntaxOnly: 4138 case frontend::ModuleFileInfo: 4139 case frontend::VerifyPCH: 4140 case frontend::PluginAction: 4141 case frontend::RewriteObjC: 4142 case frontend::RewriteTest: 4143 case frontend::RunAnalysis: 4144 case frontend::TemplightDump: 4145 case frontend::MigrateSource: 4146 return false; 4147 4148 case frontend::DumpCompilerOptions: 4149 case frontend::DumpRawTokens: 4150 case frontend::DumpTokens: 4151 case frontend::InitOnly: 4152 case frontend::PrintPreamble: 4153 case frontend::PrintPreprocessedInput: 4154 case frontend::RewriteMacros: 4155 case frontend::RunPreprocessorOnly: 4156 case frontend::PrintDependencyDirectivesSourceMinimizerOutput: 4157 return true; 4158 } 4159 llvm_unreachable("invalid frontend action"); 4160 } 4161 4162 static void GeneratePreprocessorArgs(PreprocessorOptions &Opts, 4163 SmallVectorImpl<const char *> &Args, 4164 CompilerInvocation::StringAllocator SA, 4165 const LangOptions &LangOpts, 4166 const FrontendOptions &FrontendOpts, 4167 const CodeGenOptions &CodeGenOpts) { 4168 PreprocessorOptions *PreprocessorOpts = &Opts; 4169 4170 #define PREPROCESSOR_OPTION_WITH_MARSHALLING( \ 4171 PREFIX_TYPE, NAME, ID, KIND, GROUP, ALIAS, ALIASARGS, FLAGS, PARAM, \ 4172 HELPTEXT, METAVAR, VALUES, SPELLING, SHOULD_PARSE, ALWAYS_EMIT, KEYPATH, \ 4173 DEFAULT_VALUE, IMPLIED_CHECK, IMPLIED_VALUE, NORMALIZER, DENORMALIZER, \ 4174 MERGER, EXTRACTOR, TABLE_INDEX) \ 4175 GENERATE_OPTION_WITH_MARSHALLING( \ 4176 Args, SA, KIND, FLAGS, SPELLING, ALWAYS_EMIT, KEYPATH, DEFAULT_VALUE, \ 4177 IMPLIED_CHECK, IMPLIED_VALUE, DENORMALIZER, EXTRACTOR, TABLE_INDEX) 4178 #include "clang/Driver/Options.inc" 4179 #undef PREPROCESSOR_OPTION_WITH_MARSHALLING 4180 4181 if (Opts.PCHWithHdrStop && !Opts.PCHWithHdrStopCreate) 4182 GenerateArg(Args, OPT_pch_through_hdrstop_use, SA); 4183 4184 for (const auto &D : Opts.DeserializedPCHDeclsToErrorOn) 4185 GenerateArg(Args, OPT_error_on_deserialized_pch_decl, D, SA); 4186 4187 if (Opts.PrecompiledPreambleBytes != std::make_pair(0u, false)) 4188 GenerateArg(Args, OPT_preamble_bytes_EQ, 4189 Twine(Opts.PrecompiledPreambleBytes.first) + "," + 4190 (Opts.PrecompiledPreambleBytes.second ? "1" : "0"), 4191 SA); 4192 4193 for (const auto &M : Opts.Macros) { 4194 // Don't generate __CET__ macro definitions. They are implied by the 4195 // -fcf-protection option that is generated elsewhere. 4196 if (M.first == "__CET__=1" && !M.second && 4197 !CodeGenOpts.CFProtectionReturn && CodeGenOpts.CFProtectionBranch) 4198 continue; 4199 if (M.first == "__CET__=2" && !M.second && CodeGenOpts.CFProtectionReturn && 4200 !CodeGenOpts.CFProtectionBranch) 4201 continue; 4202 if (M.first == "__CET__=3" && !M.second && CodeGenOpts.CFProtectionReturn && 4203 CodeGenOpts.CFProtectionBranch) 4204 continue; 4205 4206 GenerateArg(Args, M.second ? OPT_U : OPT_D, M.first, SA); 4207 } 4208 4209 for (const auto &I : Opts.Includes) { 4210 // Don't generate OpenCL includes. They are implied by other flags that are 4211 // generated elsewhere. 4212 if (LangOpts.OpenCL && LangOpts.IncludeDefaultHeader && 4213 ((LangOpts.DeclareOpenCLBuiltins && I == "opencl-c-base.h") || 4214 I == "opencl-c.h")) 4215 continue; 4216 // Don't generate HLSL includes. They are implied by other flags that are 4217 // generated elsewhere. 4218 if (LangOpts.HLSL && I == "hlsl.h") 4219 continue; 4220 4221 GenerateArg(Args, OPT_include, I, SA); 4222 } 4223 4224 for (const auto &CI : Opts.ChainedIncludes) 4225 GenerateArg(Args, OPT_chain_include, CI, SA); 4226 4227 for (const auto &RF : Opts.RemappedFiles) 4228 GenerateArg(Args, OPT_remap_file, RF.first + ";" + RF.second, SA); 4229 4230 if (Opts.SourceDateEpoch) 4231 GenerateArg(Args, OPT_source_date_epoch, Twine(*Opts.SourceDateEpoch), SA); 4232 4233 // Don't handle LexEditorPlaceholders. It is implied by the action that is 4234 // generated elsewhere. 4235 } 4236 4237 static bool ParsePreprocessorArgs(PreprocessorOptions &Opts, ArgList &Args, 4238 DiagnosticsEngine &Diags, 4239 frontend::ActionKind Action, 4240 const FrontendOptions &FrontendOpts) { 4241 unsigned NumErrorsBefore = Diags.getNumErrors(); 4242 4243 PreprocessorOptions *PreprocessorOpts = &Opts; 4244 4245 #define PREPROCESSOR_OPTION_WITH_MARSHALLING( \ 4246 PREFIX_TYPE, NAME, ID, KIND, GROUP, ALIAS, ALIASARGS, FLAGS, PARAM, \ 4247 HELPTEXT, METAVAR, VALUES, SPELLING, SHOULD_PARSE, ALWAYS_EMIT, KEYPATH, \ 4248 DEFAULT_VALUE, IMPLIED_CHECK, IMPLIED_VALUE, NORMALIZER, DENORMALIZER, \ 4249 MERGER, EXTRACTOR, TABLE_INDEX) \ 4250 PARSE_OPTION_WITH_MARSHALLING( \ 4251 Args, Diags, ID, FLAGS, PARAM, SHOULD_PARSE, KEYPATH, DEFAULT_VALUE, \ 4252 IMPLIED_CHECK, IMPLIED_VALUE, NORMALIZER, MERGER, TABLE_INDEX) 4253 #include "clang/Driver/Options.inc" 4254 #undef PREPROCESSOR_OPTION_WITH_MARSHALLING 4255 4256 Opts.PCHWithHdrStop = Args.hasArg(OPT_pch_through_hdrstop_create) || 4257 Args.hasArg(OPT_pch_through_hdrstop_use); 4258 4259 for (const auto *A : Args.filtered(OPT_error_on_deserialized_pch_decl)) 4260 Opts.DeserializedPCHDeclsToErrorOn.insert(A->getValue()); 4261 4262 if (const Arg *A = Args.getLastArg(OPT_preamble_bytes_EQ)) { 4263 StringRef Value(A->getValue()); 4264 size_t Comma = Value.find(','); 4265 unsigned Bytes = 0; 4266 unsigned EndOfLine = 0; 4267 4268 if (Comma == StringRef::npos || 4269 Value.substr(0, Comma).getAsInteger(10, Bytes) || 4270 Value.substr(Comma + 1).getAsInteger(10, EndOfLine)) 4271 Diags.Report(diag::err_drv_preamble_format); 4272 else { 4273 Opts.PrecompiledPreambleBytes.first = Bytes; 4274 Opts.PrecompiledPreambleBytes.second = (EndOfLine != 0); 4275 } 4276 } 4277 4278 // Add the __CET__ macro if a CFProtection option is set. 4279 if (const Arg *A = Args.getLastArg(OPT_fcf_protection_EQ)) { 4280 StringRef Name = A->getValue(); 4281 if (Name == "branch") 4282 Opts.addMacroDef("__CET__=1"); 4283 else if (Name == "return") 4284 Opts.addMacroDef("__CET__=2"); 4285 else if (Name == "full") 4286 Opts.addMacroDef("__CET__=3"); 4287 } 4288 4289 // Add macros from the command line. 4290 for (const auto *A : Args.filtered(OPT_D, OPT_U)) { 4291 if (A->getOption().matches(OPT_D)) 4292 Opts.addMacroDef(A->getValue()); 4293 else 4294 Opts.addMacroUndef(A->getValue()); 4295 } 4296 4297 // Add the ordered list of -includes. 4298 for (const auto *A : Args.filtered(OPT_include)) 4299 Opts.Includes.emplace_back(A->getValue()); 4300 4301 for (const auto *A : Args.filtered(OPT_chain_include)) 4302 Opts.ChainedIncludes.emplace_back(A->getValue()); 4303 4304 for (const auto *A : Args.filtered(OPT_remap_file)) { 4305 std::pair<StringRef, StringRef> Split = StringRef(A->getValue()).split(';'); 4306 4307 if (Split.second.empty()) { 4308 Diags.Report(diag::err_drv_invalid_remap_file) << A->getAsString(Args); 4309 continue; 4310 } 4311 4312 Opts.addRemappedFile(Split.first, Split.second); 4313 } 4314 4315 if (const Arg *A = Args.getLastArg(OPT_source_date_epoch)) { 4316 StringRef Epoch = A->getValue(); 4317 // SOURCE_DATE_EPOCH, if specified, must be a non-negative decimal integer. 4318 // On time64 systems, pick 253402300799 (the UNIX timestamp of 4319 // 9999-12-31T23:59:59Z) as the upper bound. 4320 const uint64_t MaxTimestamp = 4321 std::min<uint64_t>(std::numeric_limits<time_t>::max(), 253402300799); 4322 uint64_t V; 4323 if (Epoch.getAsInteger(10, V) || V > MaxTimestamp) { 4324 Diags.Report(diag::err_fe_invalid_source_date_epoch) 4325 << Epoch << MaxTimestamp; 4326 } else { 4327 Opts.SourceDateEpoch = V; 4328 } 4329 } 4330 4331 // Always avoid lexing editor placeholders when we're just running the 4332 // preprocessor as we never want to emit the 4333 // "editor placeholder in source file" error in PP only mode. 4334 if (isStrictlyPreprocessorAction(Action)) 4335 Opts.LexEditorPlaceholders = false; 4336 4337 return Diags.getNumErrors() == NumErrorsBefore; 4338 } 4339 4340 static void GeneratePreprocessorOutputArgs( 4341 const PreprocessorOutputOptions &Opts, SmallVectorImpl<const char *> &Args, 4342 CompilerInvocation::StringAllocator SA, frontend::ActionKind Action) { 4343 const PreprocessorOutputOptions &PreprocessorOutputOpts = Opts; 4344 4345 #define PREPROCESSOR_OUTPUT_OPTION_WITH_MARSHALLING( \ 4346 PREFIX_TYPE, NAME, ID, KIND, GROUP, ALIAS, ALIASARGS, FLAGS, PARAM, \ 4347 HELPTEXT, METAVAR, VALUES, SPELLING, SHOULD_PARSE, ALWAYS_EMIT, KEYPATH, \ 4348 DEFAULT_VALUE, IMPLIED_CHECK, IMPLIED_VALUE, NORMALIZER, DENORMALIZER, \ 4349 MERGER, EXTRACTOR, TABLE_INDEX) \ 4350 GENERATE_OPTION_WITH_MARSHALLING( \ 4351 Args, SA, KIND, FLAGS, SPELLING, ALWAYS_EMIT, KEYPATH, DEFAULT_VALUE, \ 4352 IMPLIED_CHECK, IMPLIED_VALUE, DENORMALIZER, EXTRACTOR, TABLE_INDEX) 4353 #include "clang/Driver/Options.inc" 4354 #undef PREPROCESSOR_OUTPUT_OPTION_WITH_MARSHALLING 4355 4356 bool Generate_dM = isStrictlyPreprocessorAction(Action) && !Opts.ShowCPP; 4357 if (Generate_dM) 4358 GenerateArg(Args, OPT_dM, SA); 4359 if (!Generate_dM && Opts.ShowMacros) 4360 GenerateArg(Args, OPT_dD, SA); 4361 if (Opts.DirectivesOnly) 4362 GenerateArg(Args, OPT_fdirectives_only, SA); 4363 } 4364 4365 static bool ParsePreprocessorOutputArgs(PreprocessorOutputOptions &Opts, 4366 ArgList &Args, DiagnosticsEngine &Diags, 4367 frontend::ActionKind Action) { 4368 unsigned NumErrorsBefore = Diags.getNumErrors(); 4369 4370 PreprocessorOutputOptions &PreprocessorOutputOpts = Opts; 4371 4372 #define PREPROCESSOR_OUTPUT_OPTION_WITH_MARSHALLING( \ 4373 PREFIX_TYPE, NAME, ID, KIND, GROUP, ALIAS, ALIASARGS, FLAGS, PARAM, \ 4374 HELPTEXT, METAVAR, VALUES, SPELLING, SHOULD_PARSE, ALWAYS_EMIT, KEYPATH, \ 4375 DEFAULT_VALUE, IMPLIED_CHECK, IMPLIED_VALUE, NORMALIZER, DENORMALIZER, \ 4376 MERGER, EXTRACTOR, TABLE_INDEX) \ 4377 PARSE_OPTION_WITH_MARSHALLING( \ 4378 Args, Diags, ID, FLAGS, PARAM, SHOULD_PARSE, KEYPATH, DEFAULT_VALUE, \ 4379 IMPLIED_CHECK, IMPLIED_VALUE, NORMALIZER, MERGER, TABLE_INDEX) 4380 #include "clang/Driver/Options.inc" 4381 #undef PREPROCESSOR_OUTPUT_OPTION_WITH_MARSHALLING 4382 4383 Opts.ShowCPP = isStrictlyPreprocessorAction(Action) && !Args.hasArg(OPT_dM); 4384 Opts.ShowMacros = Args.hasArg(OPT_dM) || Args.hasArg(OPT_dD); 4385 Opts.DirectivesOnly = Args.hasArg(OPT_fdirectives_only); 4386 4387 return Diags.getNumErrors() == NumErrorsBefore; 4388 } 4389 4390 static void GenerateTargetArgs(const TargetOptions &Opts, 4391 SmallVectorImpl<const char *> &Args, 4392 CompilerInvocation::StringAllocator SA) { 4393 const TargetOptions *TargetOpts = &Opts; 4394 #define TARGET_OPTION_WITH_MARSHALLING( \ 4395 PREFIX_TYPE, NAME, ID, KIND, GROUP, ALIAS, ALIASARGS, FLAGS, PARAM, \ 4396 HELPTEXT, METAVAR, VALUES, SPELLING, SHOULD_PARSE, ALWAYS_EMIT, KEYPATH, \ 4397 DEFAULT_VALUE, IMPLIED_CHECK, IMPLIED_VALUE, NORMALIZER, DENORMALIZER, \ 4398 MERGER, EXTRACTOR, TABLE_INDEX) \ 4399 GENERATE_OPTION_WITH_MARSHALLING( \ 4400 Args, SA, KIND, FLAGS, SPELLING, ALWAYS_EMIT, KEYPATH, DEFAULT_VALUE, \ 4401 IMPLIED_CHECK, IMPLIED_VALUE, DENORMALIZER, EXTRACTOR, TABLE_INDEX) 4402 #include "clang/Driver/Options.inc" 4403 #undef TARGET_OPTION_WITH_MARSHALLING 4404 4405 if (!Opts.SDKVersion.empty()) 4406 GenerateArg(Args, OPT_target_sdk_version_EQ, Opts.SDKVersion.getAsString(), 4407 SA); 4408 if (!Opts.DarwinTargetVariantSDKVersion.empty()) 4409 GenerateArg(Args, OPT_darwin_target_variant_sdk_version_EQ, 4410 Opts.DarwinTargetVariantSDKVersion.getAsString(), SA); 4411 } 4412 4413 static bool ParseTargetArgs(TargetOptions &Opts, ArgList &Args, 4414 DiagnosticsEngine &Diags) { 4415 unsigned NumErrorsBefore = Diags.getNumErrors(); 4416 4417 TargetOptions *TargetOpts = &Opts; 4418 4419 #define TARGET_OPTION_WITH_MARSHALLING( \ 4420 PREFIX_TYPE, NAME, ID, KIND, GROUP, ALIAS, ALIASARGS, FLAGS, PARAM, \ 4421 HELPTEXT, METAVAR, VALUES, SPELLING, SHOULD_PARSE, ALWAYS_EMIT, KEYPATH, \ 4422 DEFAULT_VALUE, IMPLIED_CHECK, IMPLIED_VALUE, NORMALIZER, DENORMALIZER, \ 4423 MERGER, EXTRACTOR, TABLE_INDEX) \ 4424 PARSE_OPTION_WITH_MARSHALLING( \ 4425 Args, Diags, ID, FLAGS, PARAM, SHOULD_PARSE, KEYPATH, DEFAULT_VALUE, \ 4426 IMPLIED_CHECK, IMPLIED_VALUE, NORMALIZER, MERGER, TABLE_INDEX) 4427 #include "clang/Driver/Options.inc" 4428 #undef TARGET_OPTION_WITH_MARSHALLING 4429 4430 if (Arg *A = Args.getLastArg(options::OPT_target_sdk_version_EQ)) { 4431 llvm::VersionTuple Version; 4432 if (Version.tryParse(A->getValue())) 4433 Diags.Report(diag::err_drv_invalid_value) 4434 << A->getAsString(Args) << A->getValue(); 4435 else 4436 Opts.SDKVersion = Version; 4437 } 4438 if (Arg *A = 4439 Args.getLastArg(options::OPT_darwin_target_variant_sdk_version_EQ)) { 4440 llvm::VersionTuple Version; 4441 if (Version.tryParse(A->getValue())) 4442 Diags.Report(diag::err_drv_invalid_value) 4443 << A->getAsString(Args) << A->getValue(); 4444 else 4445 Opts.DarwinTargetVariantSDKVersion = Version; 4446 } 4447 4448 return Diags.getNumErrors() == NumErrorsBefore; 4449 } 4450 4451 bool CompilerInvocation::CreateFromArgsImpl( 4452 CompilerInvocation &Res, ArrayRef<const char *> CommandLineArgs, 4453 DiagnosticsEngine &Diags, const char *Argv0) { 4454 unsigned NumErrorsBefore = Diags.getNumErrors(); 4455 4456 // Parse the arguments. 4457 const OptTable &Opts = getDriverOptTable(); 4458 const unsigned IncludedFlagsBitmask = options::CC1Option; 4459 unsigned MissingArgIndex, MissingArgCount; 4460 InputArgList Args = Opts.ParseArgs(CommandLineArgs, MissingArgIndex, 4461 MissingArgCount, IncludedFlagsBitmask); 4462 LangOptions &LangOpts = *Res.getLangOpts(); 4463 4464 // Check for missing argument error. 4465 if (MissingArgCount) 4466 Diags.Report(diag::err_drv_missing_argument) 4467 << Args.getArgString(MissingArgIndex) << MissingArgCount; 4468 4469 // Issue errors on unknown arguments. 4470 for (const auto *A : Args.filtered(OPT_UNKNOWN)) { 4471 auto ArgString = A->getAsString(Args); 4472 std::string Nearest; 4473 if (Opts.findNearest(ArgString, Nearest, IncludedFlagsBitmask) > 1) 4474 Diags.Report(diag::err_drv_unknown_argument) << ArgString; 4475 else 4476 Diags.Report(diag::err_drv_unknown_argument_with_suggestion) 4477 << ArgString << Nearest; 4478 } 4479 4480 ParseFileSystemArgs(Res.getFileSystemOpts(), Args, Diags); 4481 ParseMigratorArgs(Res.getMigratorOpts(), Args, Diags); 4482 ParseAnalyzerArgs(*Res.getAnalyzerOpts(), Args, Diags); 4483 ParseDiagnosticArgs(Res.getDiagnosticOpts(), Args, &Diags, 4484 /*DefaultDiagColor=*/false); 4485 ParseFrontendArgs(Res.getFrontendOpts(), Args, Diags, LangOpts.IsHeaderFile); 4486 // FIXME: We shouldn't have to pass the DashX option around here 4487 InputKind DashX = Res.getFrontendOpts().DashX; 4488 ParseTargetArgs(Res.getTargetOpts(), Args, Diags); 4489 llvm::Triple T(Res.getTargetOpts().Triple); 4490 ParseHeaderSearchArgs(Res.getHeaderSearchOpts(), Args, Diags, 4491 Res.getFileSystemOpts().WorkingDir); 4492 4493 ParseLangArgs(LangOpts, Args, DashX, T, Res.getPreprocessorOpts().Includes, 4494 Diags); 4495 if (Res.getFrontendOpts().ProgramAction == frontend::RewriteObjC) 4496 LangOpts.ObjCExceptions = 1; 4497 4498 for (auto Warning : Res.getDiagnosticOpts().Warnings) { 4499 if (Warning == "misexpect" && 4500 !Diags.isIgnored(diag::warn_profile_data_misexpect, SourceLocation())) { 4501 Res.getCodeGenOpts().MisExpect = true; 4502 } 4503 } 4504 4505 if (LangOpts.CUDA) { 4506 // During CUDA device-side compilation, the aux triple is the 4507 // triple used for host compilation. 4508 if (LangOpts.CUDAIsDevice) 4509 Res.getTargetOpts().HostTriple = Res.getFrontendOpts().AuxTriple; 4510 } 4511 4512 // Set the triple of the host for OpenMP device compile. 4513 if (LangOpts.OpenMPIsDevice) 4514 Res.getTargetOpts().HostTriple = Res.getFrontendOpts().AuxTriple; 4515 4516 ParseCodeGenArgs(Res.getCodeGenOpts(), Args, DashX, Diags, T, 4517 Res.getFrontendOpts().OutputFile, LangOpts); 4518 4519 // FIXME: Override value name discarding when asan or msan is used because the 4520 // backend passes depend on the name of the alloca in order to print out 4521 // names. 4522 Res.getCodeGenOpts().DiscardValueNames &= 4523 !LangOpts.Sanitize.has(SanitizerKind::Address) && 4524 !LangOpts.Sanitize.has(SanitizerKind::KernelAddress) && 4525 !LangOpts.Sanitize.has(SanitizerKind::Memory) && 4526 !LangOpts.Sanitize.has(SanitizerKind::KernelMemory); 4527 4528 ParsePreprocessorArgs(Res.getPreprocessorOpts(), Args, Diags, 4529 Res.getFrontendOpts().ProgramAction, 4530 Res.getFrontendOpts()); 4531 ParsePreprocessorOutputArgs(Res.getPreprocessorOutputOpts(), Args, Diags, 4532 Res.getFrontendOpts().ProgramAction); 4533 4534 ParseDependencyOutputArgs(Res.getDependencyOutputOpts(), Args, Diags, 4535 Res.getFrontendOpts().ProgramAction, 4536 Res.getPreprocessorOutputOpts().ShowLineMarkers); 4537 if (!Res.getDependencyOutputOpts().OutputFile.empty() && 4538 Res.getDependencyOutputOpts().Targets.empty()) 4539 Diags.Report(diag::err_fe_dependency_file_requires_MT); 4540 4541 // If sanitizer is enabled, disable OPT_ffine_grained_bitfield_accesses. 4542 if (Res.getCodeGenOpts().FineGrainedBitfieldAccesses && 4543 !Res.getLangOpts()->Sanitize.empty()) { 4544 Res.getCodeGenOpts().FineGrainedBitfieldAccesses = false; 4545 Diags.Report(diag::warn_drv_fine_grained_bitfield_accesses_ignored); 4546 } 4547 4548 // Store the command-line for using in the CodeView backend. 4549 if (Res.getCodeGenOpts().CodeViewCommandLine) { 4550 Res.getCodeGenOpts().Argv0 = Argv0; 4551 append_range(Res.getCodeGenOpts().CommandLineArgs, CommandLineArgs); 4552 } 4553 4554 FixupInvocation(Res, Diags, Args, DashX); 4555 4556 return Diags.getNumErrors() == NumErrorsBefore; 4557 } 4558 4559 bool CompilerInvocation::CreateFromArgs(CompilerInvocation &Invocation, 4560 ArrayRef<const char *> CommandLineArgs, 4561 DiagnosticsEngine &Diags, 4562 const char *Argv0) { 4563 CompilerInvocation DummyInvocation; 4564 4565 return RoundTrip( 4566 [](CompilerInvocation &Invocation, ArrayRef<const char *> CommandLineArgs, 4567 DiagnosticsEngine &Diags, const char *Argv0) { 4568 return CreateFromArgsImpl(Invocation, CommandLineArgs, Diags, Argv0); 4569 }, 4570 [](CompilerInvocation &Invocation, SmallVectorImpl<const char *> &Args, 4571 StringAllocator SA) { 4572 Args.push_back("-cc1"); 4573 Invocation.generateCC1CommandLine(Args, SA); 4574 }, 4575 Invocation, DummyInvocation, CommandLineArgs, Diags, Argv0); 4576 } 4577 4578 std::string CompilerInvocation::getModuleHash() const { 4579 // FIXME: Consider using SHA1 instead of MD5. 4580 llvm::HashBuilder<llvm::MD5, llvm::support::endianness::native> HBuilder; 4581 4582 // Note: For QoI reasons, the things we use as a hash here should all be 4583 // dumped via the -module-info flag. 4584 4585 // Start the signature with the compiler version. 4586 HBuilder.add(getClangFullRepositoryVersion()); 4587 4588 // Also include the serialization version, in case LLVM_APPEND_VC_REV is off 4589 // and getClangFullRepositoryVersion() doesn't include git revision. 4590 HBuilder.add(serialization::VERSION_MAJOR, serialization::VERSION_MINOR); 4591 4592 // Extend the signature with the language options 4593 #define LANGOPT(Name, Bits, Default, Description) HBuilder.add(LangOpts->Name); 4594 #define ENUM_LANGOPT(Name, Type, Bits, Default, Description) \ 4595 HBuilder.add(static_cast<unsigned>(LangOpts->get##Name())); 4596 #define BENIGN_LANGOPT(Name, Bits, Default, Description) 4597 #define BENIGN_ENUM_LANGOPT(Name, Type, Bits, Default, Description) 4598 #include "clang/Basic/LangOptions.def" 4599 4600 HBuilder.addRange(LangOpts->ModuleFeatures); 4601 4602 HBuilder.add(LangOpts->ObjCRuntime); 4603 HBuilder.addRange(LangOpts->CommentOpts.BlockCommandNames); 4604 4605 // Extend the signature with the target options. 4606 HBuilder.add(TargetOpts->Triple, TargetOpts->CPU, TargetOpts->TuneCPU, 4607 TargetOpts->ABI); 4608 HBuilder.addRange(TargetOpts->FeaturesAsWritten); 4609 4610 // Extend the signature with preprocessor options. 4611 const PreprocessorOptions &ppOpts = getPreprocessorOpts(); 4612 HBuilder.add(ppOpts.UsePredefines, ppOpts.DetailedRecord); 4613 4614 const HeaderSearchOptions &hsOpts = getHeaderSearchOpts(); 4615 for (const auto &Macro : getPreprocessorOpts().Macros) { 4616 // If we're supposed to ignore this macro for the purposes of modules, 4617 // don't put it into the hash. 4618 if (!hsOpts.ModulesIgnoreMacros.empty()) { 4619 // Check whether we're ignoring this macro. 4620 StringRef MacroDef = Macro.first; 4621 if (hsOpts.ModulesIgnoreMacros.count( 4622 llvm::CachedHashString(MacroDef.split('=').first))) 4623 continue; 4624 } 4625 4626 HBuilder.add(Macro); 4627 } 4628 4629 // Extend the signature with the sysroot and other header search options. 4630 HBuilder.add(hsOpts.Sysroot, hsOpts.ModuleFormat, hsOpts.UseDebugInfo, 4631 hsOpts.UseBuiltinIncludes, hsOpts.UseStandardSystemIncludes, 4632 hsOpts.UseStandardCXXIncludes, hsOpts.UseLibcxx, 4633 hsOpts.ModulesValidateDiagnosticOptions); 4634 HBuilder.add(hsOpts.ResourceDir); 4635 4636 if (hsOpts.ModulesStrictContextHash) { 4637 HBuilder.addRange(hsOpts.SystemHeaderPrefixes); 4638 HBuilder.addRange(hsOpts.UserEntries); 4639 4640 const DiagnosticOptions &diagOpts = getDiagnosticOpts(); 4641 #define DIAGOPT(Name, Bits, Default) HBuilder.add(diagOpts.Name); 4642 #define ENUM_DIAGOPT(Name, Type, Bits, Default) \ 4643 HBuilder.add(diagOpts.get##Name()); 4644 #include "clang/Basic/DiagnosticOptions.def" 4645 #undef DIAGOPT 4646 #undef ENUM_DIAGOPT 4647 } 4648 4649 // Extend the signature with the user build path. 4650 HBuilder.add(hsOpts.ModuleUserBuildPath); 4651 4652 // Extend the signature with the module file extensions. 4653 for (const auto &ext : getFrontendOpts().ModuleFileExtensions) 4654 ext->hashExtension(HBuilder); 4655 4656 // When compiling with -gmodules, also hash -fdebug-prefix-map as it 4657 // affects the debug info in the PCM. 4658 if (getCodeGenOpts().DebugTypeExtRefs) 4659 HBuilder.addRange(getCodeGenOpts().DebugPrefixMap); 4660 4661 // Extend the signature with the enabled sanitizers, if at least one is 4662 // enabled. Sanitizers which cannot affect AST generation aren't hashed. 4663 SanitizerSet SanHash = LangOpts->Sanitize; 4664 SanHash.clear(getPPTransparentSanitizers()); 4665 if (!SanHash.empty()) 4666 HBuilder.add(SanHash.Mask); 4667 4668 llvm::MD5::MD5Result Result; 4669 HBuilder.getHasher().final(Result); 4670 uint64_t Hash = Result.high() ^ Result.low(); 4671 return toString(llvm::APInt(64, Hash), 36, /*Signed=*/false); 4672 } 4673 4674 void CompilerInvocation::generateCC1CommandLine( 4675 SmallVectorImpl<const char *> &Args, StringAllocator SA) const { 4676 llvm::Triple T(TargetOpts->Triple); 4677 4678 GenerateFileSystemArgs(FileSystemOpts, Args, SA); 4679 GenerateMigratorArgs(MigratorOpts, Args, SA); 4680 GenerateAnalyzerArgs(*AnalyzerOpts, Args, SA); 4681 GenerateDiagnosticArgs(*DiagnosticOpts, Args, SA, false); 4682 GenerateFrontendArgs(FrontendOpts, Args, SA, LangOpts->IsHeaderFile); 4683 GenerateTargetArgs(*TargetOpts, Args, SA); 4684 GenerateHeaderSearchArgs(*HeaderSearchOpts, Args, SA); 4685 GenerateLangArgs(*LangOpts, Args, SA, T, FrontendOpts.DashX); 4686 GenerateCodeGenArgs(CodeGenOpts, Args, SA, T, FrontendOpts.OutputFile, 4687 &*LangOpts); 4688 GeneratePreprocessorArgs(*PreprocessorOpts, Args, SA, *LangOpts, FrontendOpts, 4689 CodeGenOpts); 4690 GeneratePreprocessorOutputArgs(PreprocessorOutputOpts, Args, SA, 4691 FrontendOpts.ProgramAction); 4692 GenerateDependencyOutputArgs(DependencyOutputOpts, Args, SA); 4693 } 4694 4695 std::vector<std::string> CompilerInvocation::getCC1CommandLine() const { 4696 // Set up string allocator. 4697 llvm::BumpPtrAllocator Alloc; 4698 llvm::StringSaver Strings(Alloc); 4699 auto SA = [&Strings](const Twine &Arg) { return Strings.save(Arg).data(); }; 4700 4701 // Synthesize full command line from the CompilerInvocation, including "-cc1". 4702 SmallVector<const char *, 32> Args{"-cc1"}; 4703 generateCC1CommandLine(Args, SA); 4704 4705 // Convert arguments to the return type. 4706 return std::vector<std::string>{Args.begin(), Args.end()}; 4707 } 4708 4709 void CompilerInvocation::resetNonModularOptions() { 4710 getLangOpts()->resetNonModularOptions(); 4711 getPreprocessorOpts().resetNonModularOptions(); 4712 } 4713 4714 void CompilerInvocation::clearImplicitModuleBuildOptions() { 4715 getLangOpts()->ImplicitModules = false; 4716 getHeaderSearchOpts().ImplicitModuleMaps = false; 4717 getHeaderSearchOpts().ModuleCachePath.clear(); 4718 getHeaderSearchOpts().ModulesValidateOncePerBuildSession = false; 4719 getHeaderSearchOpts().BuildSessionTimestamp = 0; 4720 // The specific values we canonicalize to for pruning don't affect behaviour, 4721 /// so use the default values so they may be dropped from the command-line. 4722 getHeaderSearchOpts().ModuleCachePruneInterval = 7 * 24 * 60 * 60; 4723 getHeaderSearchOpts().ModuleCachePruneAfter = 31 * 24 * 60 * 60; 4724 } 4725 4726 IntrusiveRefCntPtr<llvm::vfs::FileSystem> 4727 clang::createVFSFromCompilerInvocation(const CompilerInvocation &CI, 4728 DiagnosticsEngine &Diags) { 4729 return createVFSFromCompilerInvocation(CI, Diags, 4730 llvm::vfs::getRealFileSystem()); 4731 } 4732 4733 IntrusiveRefCntPtr<llvm::vfs::FileSystem> 4734 clang::createVFSFromCompilerInvocation( 4735 const CompilerInvocation &CI, DiagnosticsEngine &Diags, 4736 IntrusiveRefCntPtr<llvm::vfs::FileSystem> BaseFS) { 4737 if (CI.getHeaderSearchOpts().VFSOverlayFiles.empty()) 4738 return BaseFS; 4739 4740 IntrusiveRefCntPtr<llvm::vfs::FileSystem> Result = BaseFS; 4741 // earlier vfs files are on the bottom 4742 for (const auto &File : CI.getHeaderSearchOpts().VFSOverlayFiles) { 4743 llvm::ErrorOr<std::unique_ptr<llvm::MemoryBuffer>> Buffer = 4744 Result->getBufferForFile(File); 4745 if (!Buffer) { 4746 Diags.Report(diag::err_missing_vfs_overlay_file) << File; 4747 continue; 4748 } 4749 4750 IntrusiveRefCntPtr<llvm::vfs::FileSystem> FS = llvm::vfs::getVFSFromYAML( 4751 std::move(Buffer.get()), /*DiagHandler*/ nullptr, File, 4752 /*DiagContext*/ nullptr, Result); 4753 if (!FS) { 4754 Diags.Report(diag::err_invalid_vfs_overlay) << File; 4755 continue; 4756 } 4757 4758 Result = FS; 4759 } 4760 return Result; 4761 } 4762