1 //===- CompilerInvocation.cpp ---------------------------------------------===// 2 // 3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 4 // See https://llvm.org/LICENSE.txt for license information. 5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 6 // 7 //===----------------------------------------------------------------------===// 8 9 #include "clang/Frontend/CompilerInvocation.h" 10 #include "TestModuleFileExtension.h" 11 #include "clang/Basic/Builtins.h" 12 #include "clang/Basic/CharInfo.h" 13 #include "clang/Basic/CodeGenOptions.h" 14 #include "clang/Basic/CommentOptions.h" 15 #include "clang/Basic/Diagnostic.h" 16 #include "clang/Basic/DiagnosticDriver.h" 17 #include "clang/Basic/DiagnosticOptions.h" 18 #include "clang/Basic/FileSystemOptions.h" 19 #include "clang/Basic/LLVM.h" 20 #include "clang/Basic/LangOptions.h" 21 #include "clang/Basic/LangStandard.h" 22 #include "clang/Basic/ObjCRuntime.h" 23 #include "clang/Basic/Sanitizers.h" 24 #include "clang/Basic/SourceLocation.h" 25 #include "clang/Basic/TargetOptions.h" 26 #include "clang/Basic/Version.h" 27 #include "clang/Basic/Visibility.h" 28 #include "clang/Basic/XRayInstr.h" 29 #include "clang/Config/config.h" 30 #include "clang/Driver/Driver.h" 31 #include "clang/Driver/DriverDiagnostic.h" 32 #include "clang/Driver/Options.h" 33 #include "clang/Frontend/CommandLineSourceLoc.h" 34 #include "clang/Frontend/DependencyOutputOptions.h" 35 #include "clang/Frontend/FrontendDiagnostic.h" 36 #include "clang/Frontend/FrontendOptions.h" 37 #include "clang/Frontend/FrontendPluginRegistry.h" 38 #include "clang/Frontend/MigratorOptions.h" 39 #include "clang/Frontend/PreprocessorOutputOptions.h" 40 #include "clang/Frontend/TextDiagnosticBuffer.h" 41 #include "clang/Frontend/Utils.h" 42 #include "clang/Lex/HeaderSearchOptions.h" 43 #include "clang/Lex/PreprocessorOptions.h" 44 #include "clang/Sema/CodeCompleteOptions.h" 45 #include "clang/Serialization/ASTBitCodes.h" 46 #include "clang/Serialization/ModuleFileExtension.h" 47 #include "clang/StaticAnalyzer/Core/AnalyzerOptions.h" 48 #include "llvm/ADT/APInt.h" 49 #include "llvm/ADT/ArrayRef.h" 50 #include "llvm/ADT/CachedHashString.h" 51 #include "llvm/ADT/DenseSet.h" 52 #include "llvm/ADT/FloatingPointMode.h" 53 #include "llvm/ADT/Hashing.h" 54 #include "llvm/ADT/STLExtras.h" 55 #include "llvm/ADT/SmallString.h" 56 #include "llvm/ADT/SmallVector.h" 57 #include "llvm/ADT/StringRef.h" 58 #include "llvm/ADT/StringSwitch.h" 59 #include "llvm/ADT/Twine.h" 60 #include "llvm/Config/llvm-config.h" 61 #include "llvm/Frontend/Debug/Options.h" 62 #include "llvm/IR/DebugInfoMetadata.h" 63 #include "llvm/Linker/Linker.h" 64 #include "llvm/MC/MCTargetOptions.h" 65 #include "llvm/Option/Arg.h" 66 #include "llvm/Option/ArgList.h" 67 #include "llvm/Option/OptSpecifier.h" 68 #include "llvm/Option/OptTable.h" 69 #include "llvm/Option/Option.h" 70 #include "llvm/ProfileData/InstrProfReader.h" 71 #include "llvm/Remarks/HotnessThresholdParser.h" 72 #include "llvm/Support/CodeGen.h" 73 #include "llvm/Support/Compiler.h" 74 #include "llvm/Support/Error.h" 75 #include "llvm/Support/ErrorHandling.h" 76 #include "llvm/Support/ErrorOr.h" 77 #include "llvm/Support/FileSystem.h" 78 #include "llvm/Support/HashBuilder.h" 79 #include "llvm/Support/MathExtras.h" 80 #include "llvm/Support/MemoryBuffer.h" 81 #include "llvm/Support/Path.h" 82 #include "llvm/Support/Process.h" 83 #include "llvm/Support/Regex.h" 84 #include "llvm/Support/VersionTuple.h" 85 #include "llvm/Support/VirtualFileSystem.h" 86 #include "llvm/Support/raw_ostream.h" 87 #include "llvm/Target/TargetOptions.h" 88 #include "llvm/TargetParser/Host.h" 89 #include "llvm/TargetParser/Triple.h" 90 #include <algorithm> 91 #include <atomic> 92 #include <cassert> 93 #include <cstddef> 94 #include <cstring> 95 #include <ctime> 96 #include <fstream> 97 #include <limits> 98 #include <memory> 99 #include <optional> 100 #include <string> 101 #include <tuple> 102 #include <type_traits> 103 #include <utility> 104 #include <vector> 105 106 using namespace clang; 107 using namespace driver; 108 using namespace options; 109 using namespace llvm::opt; 110 111 //===----------------------------------------------------------------------===// 112 // Helpers. 113 //===----------------------------------------------------------------------===// 114 115 // Parse misexpect tolerance argument value. 116 // Valid option values are integers in the range [0, 100) 117 static Expected<std::optional<uint32_t>> parseToleranceOption(StringRef Arg) { 118 uint32_t Val; 119 if (Arg.getAsInteger(10, Val)) 120 return llvm::createStringError(llvm::inconvertibleErrorCode(), 121 "Not an integer: %s", Arg.data()); 122 return Val; 123 } 124 125 //===----------------------------------------------------------------------===// 126 // Initialization. 127 //===----------------------------------------------------------------------===// 128 129 CompilerInvocationRefBase::CompilerInvocationRefBase() 130 : LangOpts(new LangOptions()), TargetOpts(new TargetOptions()), 131 DiagnosticOpts(new DiagnosticOptions()), 132 HeaderSearchOpts(new HeaderSearchOptions()), 133 PreprocessorOpts(new PreprocessorOptions()), 134 AnalyzerOpts(new AnalyzerOptions()) {} 135 136 CompilerInvocationRefBase::CompilerInvocationRefBase( 137 const CompilerInvocationRefBase &X) 138 : LangOpts(new LangOptions(*X.getLangOpts())), 139 TargetOpts(new TargetOptions(X.getTargetOpts())), 140 DiagnosticOpts(new DiagnosticOptions(X.getDiagnosticOpts())), 141 HeaderSearchOpts(new HeaderSearchOptions(X.getHeaderSearchOpts())), 142 PreprocessorOpts(new PreprocessorOptions(X.getPreprocessorOpts())), 143 AnalyzerOpts(new AnalyzerOptions(*X.getAnalyzerOpts())) {} 144 145 CompilerInvocationRefBase::CompilerInvocationRefBase( 146 CompilerInvocationRefBase &&X) = default; 147 148 CompilerInvocationRefBase & 149 CompilerInvocationRefBase::operator=(CompilerInvocationRefBase X) { 150 LangOpts.swap(X.LangOpts); 151 TargetOpts.swap(X.TargetOpts); 152 DiagnosticOpts.swap(X.DiagnosticOpts); 153 HeaderSearchOpts.swap(X.HeaderSearchOpts); 154 PreprocessorOpts.swap(X.PreprocessorOpts); 155 AnalyzerOpts.swap(X.AnalyzerOpts); 156 return *this; 157 } 158 159 CompilerInvocationRefBase & 160 CompilerInvocationRefBase::operator=(CompilerInvocationRefBase &&X) = default; 161 162 CompilerInvocationRefBase::~CompilerInvocationRefBase() = default; 163 164 //===----------------------------------------------------------------------===// 165 // Normalizers 166 //===----------------------------------------------------------------------===// 167 168 #define SIMPLE_ENUM_VALUE_TABLE 169 #include "clang/Driver/Options.inc" 170 #undef SIMPLE_ENUM_VALUE_TABLE 171 172 static std::optional<bool> normalizeSimpleFlag(OptSpecifier Opt, 173 unsigned TableIndex, 174 const ArgList &Args, 175 DiagnosticsEngine &Diags) { 176 if (Args.hasArg(Opt)) 177 return true; 178 return std::nullopt; 179 } 180 181 static std::optional<bool> normalizeSimpleNegativeFlag(OptSpecifier Opt, 182 unsigned, 183 const ArgList &Args, 184 DiagnosticsEngine &) { 185 if (Args.hasArg(Opt)) 186 return false; 187 return std::nullopt; 188 } 189 190 /// The tblgen-erated code passes in a fifth parameter of an arbitrary type, but 191 /// denormalizeSimpleFlags never looks at it. Avoid bloating compile-time with 192 /// unnecessary template instantiations and just ignore it with a variadic 193 /// argument. 194 static void denormalizeSimpleFlag(SmallVectorImpl<const char *> &Args, 195 const char *Spelling, 196 CompilerInvocation::StringAllocator, 197 Option::OptionClass, unsigned, /*T*/...) { 198 Args.push_back(Spelling); 199 } 200 201 template <typename T> static constexpr bool is_uint64_t_convertible() { 202 return !std::is_same_v<T, uint64_t> && llvm::is_integral_or_enum<T>::value; 203 } 204 205 template <typename T, 206 std::enable_if_t<!is_uint64_t_convertible<T>(), bool> = false> 207 static auto makeFlagToValueNormalizer(T Value) { 208 return [Value](OptSpecifier Opt, unsigned, const ArgList &Args, 209 DiagnosticsEngine &) -> std::optional<T> { 210 if (Args.hasArg(Opt)) 211 return Value; 212 return std::nullopt; 213 }; 214 } 215 216 template <typename T, 217 std::enable_if_t<is_uint64_t_convertible<T>(), bool> = false> 218 static auto makeFlagToValueNormalizer(T Value) { 219 return makeFlagToValueNormalizer(uint64_t(Value)); 220 } 221 222 static auto makeBooleanOptionNormalizer(bool Value, bool OtherValue, 223 OptSpecifier OtherOpt) { 224 return [Value, OtherValue, 225 OtherOpt](OptSpecifier Opt, unsigned, const ArgList &Args, 226 DiagnosticsEngine &) -> std::optional<bool> { 227 if (const Arg *A = Args.getLastArg(Opt, OtherOpt)) { 228 return A->getOption().matches(Opt) ? Value : OtherValue; 229 } 230 return std::nullopt; 231 }; 232 } 233 234 static auto makeBooleanOptionDenormalizer(bool Value) { 235 return [Value](SmallVectorImpl<const char *> &Args, const char *Spelling, 236 CompilerInvocation::StringAllocator, Option::OptionClass, 237 unsigned, bool KeyPath) { 238 if (KeyPath == Value) 239 Args.push_back(Spelling); 240 }; 241 } 242 243 static void denormalizeStringImpl(SmallVectorImpl<const char *> &Args, 244 const char *Spelling, 245 CompilerInvocation::StringAllocator SA, 246 Option::OptionClass OptClass, unsigned, 247 const Twine &Value) { 248 switch (OptClass) { 249 case Option::SeparateClass: 250 case Option::JoinedOrSeparateClass: 251 case Option::JoinedAndSeparateClass: 252 Args.push_back(Spelling); 253 Args.push_back(SA(Value)); 254 break; 255 case Option::JoinedClass: 256 case Option::CommaJoinedClass: 257 Args.push_back(SA(Twine(Spelling) + Value)); 258 break; 259 default: 260 llvm_unreachable("Cannot denormalize an option with option class " 261 "incompatible with string denormalization."); 262 } 263 } 264 265 template <typename T> 266 static void 267 denormalizeString(SmallVectorImpl<const char *> &Args, const char *Spelling, 268 CompilerInvocation::StringAllocator SA, 269 Option::OptionClass OptClass, unsigned TableIndex, T Value) { 270 denormalizeStringImpl(Args, Spelling, SA, OptClass, TableIndex, Twine(Value)); 271 } 272 273 static std::optional<SimpleEnumValue> 274 findValueTableByName(const SimpleEnumValueTable &Table, StringRef Name) { 275 for (int I = 0, E = Table.Size; I != E; ++I) 276 if (Name == Table.Table[I].Name) 277 return Table.Table[I]; 278 279 return std::nullopt; 280 } 281 282 static std::optional<SimpleEnumValue> 283 findValueTableByValue(const SimpleEnumValueTable &Table, unsigned Value) { 284 for (int I = 0, E = Table.Size; I != E; ++I) 285 if (Value == Table.Table[I].Value) 286 return Table.Table[I]; 287 288 return std::nullopt; 289 } 290 291 static std::optional<unsigned> normalizeSimpleEnum(OptSpecifier Opt, 292 unsigned TableIndex, 293 const ArgList &Args, 294 DiagnosticsEngine &Diags) { 295 assert(TableIndex < SimpleEnumValueTablesSize); 296 const SimpleEnumValueTable &Table = SimpleEnumValueTables[TableIndex]; 297 298 auto *Arg = Args.getLastArg(Opt); 299 if (!Arg) 300 return std::nullopt; 301 302 StringRef ArgValue = Arg->getValue(); 303 if (auto MaybeEnumVal = findValueTableByName(Table, ArgValue)) 304 return MaybeEnumVal->Value; 305 306 Diags.Report(diag::err_drv_invalid_value) 307 << Arg->getAsString(Args) << ArgValue; 308 return std::nullopt; 309 } 310 311 static void denormalizeSimpleEnumImpl(SmallVectorImpl<const char *> &Args, 312 const char *Spelling, 313 CompilerInvocation::StringAllocator SA, 314 Option::OptionClass OptClass, 315 unsigned TableIndex, unsigned Value) { 316 assert(TableIndex < SimpleEnumValueTablesSize); 317 const SimpleEnumValueTable &Table = SimpleEnumValueTables[TableIndex]; 318 if (auto MaybeEnumVal = findValueTableByValue(Table, Value)) { 319 denormalizeString(Args, Spelling, SA, OptClass, TableIndex, 320 MaybeEnumVal->Name); 321 } else { 322 llvm_unreachable("The simple enum value was not correctly defined in " 323 "the tablegen option description"); 324 } 325 } 326 327 template <typename T> 328 static void denormalizeSimpleEnum(SmallVectorImpl<const char *> &Args, 329 const char *Spelling, 330 CompilerInvocation::StringAllocator SA, 331 Option::OptionClass OptClass, 332 unsigned TableIndex, T Value) { 333 return denormalizeSimpleEnumImpl(Args, Spelling, SA, OptClass, TableIndex, 334 static_cast<unsigned>(Value)); 335 } 336 337 static std::optional<std::string> normalizeString(OptSpecifier Opt, 338 int TableIndex, 339 const ArgList &Args, 340 DiagnosticsEngine &Diags) { 341 auto *Arg = Args.getLastArg(Opt); 342 if (!Arg) 343 return std::nullopt; 344 return std::string(Arg->getValue()); 345 } 346 347 template <typename IntTy> 348 static std::optional<IntTy> normalizeStringIntegral(OptSpecifier Opt, int, 349 const ArgList &Args, 350 DiagnosticsEngine &Diags) { 351 auto *Arg = Args.getLastArg(Opt); 352 if (!Arg) 353 return std::nullopt; 354 IntTy Res; 355 if (StringRef(Arg->getValue()).getAsInteger(0, Res)) { 356 Diags.Report(diag::err_drv_invalid_int_value) 357 << Arg->getAsString(Args) << Arg->getValue(); 358 return std::nullopt; 359 } 360 return Res; 361 } 362 363 static std::optional<std::vector<std::string>> 364 normalizeStringVector(OptSpecifier Opt, int, const ArgList &Args, 365 DiagnosticsEngine &) { 366 return Args.getAllArgValues(Opt); 367 } 368 369 static void denormalizeStringVector(SmallVectorImpl<const char *> &Args, 370 const char *Spelling, 371 CompilerInvocation::StringAllocator SA, 372 Option::OptionClass OptClass, 373 unsigned TableIndex, 374 const std::vector<std::string> &Values) { 375 switch (OptClass) { 376 case Option::CommaJoinedClass: { 377 std::string CommaJoinedValue; 378 if (!Values.empty()) { 379 CommaJoinedValue.append(Values.front()); 380 for (const std::string &Value : llvm::drop_begin(Values, 1)) { 381 CommaJoinedValue.append(","); 382 CommaJoinedValue.append(Value); 383 } 384 } 385 denormalizeString(Args, Spelling, SA, Option::OptionClass::JoinedClass, 386 TableIndex, CommaJoinedValue); 387 break; 388 } 389 case Option::JoinedClass: 390 case Option::SeparateClass: 391 case Option::JoinedOrSeparateClass: 392 for (const std::string &Value : Values) 393 denormalizeString(Args, Spelling, SA, OptClass, TableIndex, Value); 394 break; 395 default: 396 llvm_unreachable("Cannot denormalize an option with option class " 397 "incompatible with string vector denormalization."); 398 } 399 } 400 401 static std::optional<std::string> normalizeTriple(OptSpecifier Opt, 402 int TableIndex, 403 const ArgList &Args, 404 DiagnosticsEngine &Diags) { 405 auto *Arg = Args.getLastArg(Opt); 406 if (!Arg) 407 return std::nullopt; 408 return llvm::Triple::normalize(Arg->getValue()); 409 } 410 411 template <typename T, typename U> 412 static T mergeForwardValue(T KeyPath, U Value) { 413 return static_cast<T>(Value); 414 } 415 416 template <typename T, typename U> static T mergeMaskValue(T KeyPath, U Value) { 417 return KeyPath | Value; 418 } 419 420 template <typename T> static T extractForwardValue(T KeyPath) { 421 return KeyPath; 422 } 423 424 template <typename T, typename U, U Value> 425 static T extractMaskValue(T KeyPath) { 426 return ((KeyPath & Value) == Value) ? static_cast<T>(Value) : T(); 427 } 428 429 #define PARSE_OPTION_WITH_MARSHALLING( \ 430 ARGS, DIAGS, PREFIX_TYPE, NAME, ID, KIND, GROUP, ALIAS, ALIASARGS, FLAGS, \ 431 PARAM, HELPTEXT, METAVAR, VALUES, SPELLING, SHOULD_PARSE, ALWAYS_EMIT, \ 432 KEYPATH, DEFAULT_VALUE, IMPLIED_CHECK, IMPLIED_VALUE, NORMALIZER, \ 433 DENORMALIZER, MERGER, EXTRACTOR, TABLE_INDEX) \ 434 if ((FLAGS)&options::CC1Option) { \ 435 KEYPATH = MERGER(KEYPATH, DEFAULT_VALUE); \ 436 if (IMPLIED_CHECK) \ 437 KEYPATH = MERGER(KEYPATH, IMPLIED_VALUE); \ 438 if (SHOULD_PARSE) \ 439 if (auto MaybeValue = NORMALIZER(OPT_##ID, TABLE_INDEX, ARGS, DIAGS)) \ 440 KEYPATH = \ 441 MERGER(KEYPATH, static_cast<decltype(KEYPATH)>(*MaybeValue)); \ 442 } 443 444 // Capture the extracted value as a lambda argument to avoid potential issues 445 // with lifetime extension of the reference. 446 #define GENERATE_OPTION_WITH_MARSHALLING( \ 447 ARGS, STRING_ALLOCATOR, PREFIX_TYPE, NAME, ID, KIND, GROUP, ALIAS, \ 448 ALIASARGS, FLAGS, PARAM, HELPTEXT, METAVAR, VALUES, SPELLING, \ 449 SHOULD_PARSE, ALWAYS_EMIT, KEYPATH, DEFAULT_VALUE, IMPLIED_CHECK, \ 450 IMPLIED_VALUE, NORMALIZER, DENORMALIZER, MERGER, EXTRACTOR, TABLE_INDEX) \ 451 if ((FLAGS)&options::CC1Option) { \ 452 [&](const auto &Extracted) { \ 453 if (ALWAYS_EMIT || \ 454 (Extracted != \ 455 static_cast<decltype(KEYPATH)>((IMPLIED_CHECK) ? (IMPLIED_VALUE) \ 456 : (DEFAULT_VALUE)))) \ 457 DENORMALIZER(ARGS, SPELLING, STRING_ALLOCATOR, Option::KIND##Class, \ 458 TABLE_INDEX, Extracted); \ 459 }(EXTRACTOR(KEYPATH)); \ 460 } 461 462 static StringRef GetInputKindName(InputKind IK); 463 464 static bool FixupInvocation(CompilerInvocation &Invocation, 465 DiagnosticsEngine &Diags, const ArgList &Args, 466 InputKind IK) { 467 unsigned NumErrorsBefore = Diags.getNumErrors(); 468 469 LangOptions &LangOpts = *Invocation.getLangOpts(); 470 CodeGenOptions &CodeGenOpts = Invocation.getCodeGenOpts(); 471 TargetOptions &TargetOpts = Invocation.getTargetOpts(); 472 FrontendOptions &FrontendOpts = Invocation.getFrontendOpts(); 473 CodeGenOpts.XRayInstrumentFunctions = LangOpts.XRayInstrument; 474 CodeGenOpts.XRayAlwaysEmitCustomEvents = LangOpts.XRayAlwaysEmitCustomEvents; 475 CodeGenOpts.XRayAlwaysEmitTypedEvents = LangOpts.XRayAlwaysEmitTypedEvents; 476 CodeGenOpts.DisableFree = FrontendOpts.DisableFree; 477 FrontendOpts.GenerateGlobalModuleIndex = FrontendOpts.UseGlobalModuleIndex; 478 if (FrontendOpts.ShowStats) 479 CodeGenOpts.ClearASTBeforeBackend = false; 480 LangOpts.SanitizeCoverage = CodeGenOpts.hasSanitizeCoverage(); 481 LangOpts.ForceEmitVTables = CodeGenOpts.ForceEmitVTables; 482 LangOpts.SpeculativeLoadHardening = CodeGenOpts.SpeculativeLoadHardening; 483 LangOpts.CurrentModule = LangOpts.ModuleName; 484 485 llvm::Triple T(TargetOpts.Triple); 486 llvm::Triple::ArchType Arch = T.getArch(); 487 488 CodeGenOpts.CodeModel = TargetOpts.CodeModel; 489 490 if (LangOpts.getExceptionHandling() != 491 LangOptions::ExceptionHandlingKind::None && 492 T.isWindowsMSVCEnvironment()) 493 Diags.Report(diag::err_fe_invalid_exception_model) 494 << static_cast<unsigned>(LangOpts.getExceptionHandling()) << T.str(); 495 496 if (LangOpts.AppleKext && !LangOpts.CPlusPlus) 497 Diags.Report(diag::warn_c_kext); 498 499 if (LangOpts.NewAlignOverride && 500 !llvm::isPowerOf2_32(LangOpts.NewAlignOverride)) { 501 Arg *A = Args.getLastArg(OPT_fnew_alignment_EQ); 502 Diags.Report(diag::err_fe_invalid_alignment) 503 << A->getAsString(Args) << A->getValue(); 504 LangOpts.NewAlignOverride = 0; 505 } 506 507 // Prevent the user from specifying both -fsycl-is-device and -fsycl-is-host. 508 if (LangOpts.SYCLIsDevice && LangOpts.SYCLIsHost) 509 Diags.Report(diag::err_drv_argument_not_allowed_with) << "-fsycl-is-device" 510 << "-fsycl-is-host"; 511 512 if (Args.hasArg(OPT_fgnu89_inline) && LangOpts.CPlusPlus) 513 Diags.Report(diag::err_drv_argument_not_allowed_with) 514 << "-fgnu89-inline" << GetInputKindName(IK); 515 516 if (Args.hasArg(OPT_hlsl_entrypoint) && !LangOpts.HLSL) 517 Diags.Report(diag::err_drv_argument_not_allowed_with) 518 << "-hlsl-entry" << GetInputKindName(IK); 519 520 if (Args.hasArg(OPT_fgpu_allow_device_init) && !LangOpts.HIP) 521 Diags.Report(diag::warn_ignored_hip_only_option) 522 << Args.getLastArg(OPT_fgpu_allow_device_init)->getAsString(Args); 523 524 if (Args.hasArg(OPT_gpu_max_threads_per_block_EQ) && !LangOpts.HIP) 525 Diags.Report(diag::warn_ignored_hip_only_option) 526 << Args.getLastArg(OPT_gpu_max_threads_per_block_EQ)->getAsString(Args); 527 528 // When these options are used, the compiler is allowed to apply 529 // optimizations that may affect the final result. For example 530 // (x+y)+z is transformed to x+(y+z) but may not give the same 531 // final result; it's not value safe. 532 // Another example can be to simplify x/x to 1.0 but x could be 0.0, INF 533 // or NaN. Final result may then differ. An error is issued when the eval 534 // method is set with one of these options. 535 if (Args.hasArg(OPT_ffp_eval_method_EQ)) { 536 if (LangOpts.ApproxFunc) 537 Diags.Report(diag::err_incompatible_fp_eval_method_options) << 0; 538 if (LangOpts.AllowFPReassoc) 539 Diags.Report(diag::err_incompatible_fp_eval_method_options) << 1; 540 if (LangOpts.AllowRecip) 541 Diags.Report(diag::err_incompatible_fp_eval_method_options) << 2; 542 } 543 544 // -cl-strict-aliasing needs to emit diagnostic in the case where CL > 1.0. 545 // This option should be deprecated for CL > 1.0 because 546 // this option was added for compatibility with OpenCL 1.0. 547 if (Args.getLastArg(OPT_cl_strict_aliasing) && 548 (LangOpts.getOpenCLCompatibleVersion() > 100)) 549 Diags.Report(diag::warn_option_invalid_ocl_version) 550 << LangOpts.getOpenCLVersionString() 551 << Args.getLastArg(OPT_cl_strict_aliasing)->getAsString(Args); 552 553 if (Arg *A = Args.getLastArg(OPT_fdefault_calling_conv_EQ)) { 554 auto DefaultCC = LangOpts.getDefaultCallingConv(); 555 556 bool emitError = (DefaultCC == LangOptions::DCC_FastCall || 557 DefaultCC == LangOptions::DCC_StdCall) && 558 Arch != llvm::Triple::x86; 559 emitError |= (DefaultCC == LangOptions::DCC_VectorCall || 560 DefaultCC == LangOptions::DCC_RegCall) && 561 !T.isX86(); 562 if (emitError) 563 Diags.Report(diag::err_drv_argument_not_allowed_with) 564 << A->getSpelling() << T.getTriple(); 565 } 566 567 return Diags.getNumErrors() == NumErrorsBefore; 568 } 569 570 //===----------------------------------------------------------------------===// 571 // Deserialization (from args) 572 //===----------------------------------------------------------------------===// 573 574 static unsigned getOptimizationLevel(ArgList &Args, InputKind IK, 575 DiagnosticsEngine &Diags) { 576 unsigned DefaultOpt = llvm::CodeGenOpt::None; 577 if ((IK.getLanguage() == Language::OpenCL || 578 IK.getLanguage() == Language::OpenCLCXX) && 579 !Args.hasArg(OPT_cl_opt_disable)) 580 DefaultOpt = llvm::CodeGenOpt::Default; 581 582 if (Arg *A = Args.getLastArg(options::OPT_O_Group)) { 583 if (A->getOption().matches(options::OPT_O0)) 584 return llvm::CodeGenOpt::None; 585 586 if (A->getOption().matches(options::OPT_Ofast)) 587 return llvm::CodeGenOpt::Aggressive; 588 589 assert(A->getOption().matches(options::OPT_O)); 590 591 StringRef S(A->getValue()); 592 if (S == "s" || S == "z") 593 return llvm::CodeGenOpt::Default; 594 595 if (S == "g") 596 return llvm::CodeGenOpt::Less; 597 598 return getLastArgIntValue(Args, OPT_O, DefaultOpt, Diags); 599 } 600 601 return DefaultOpt; 602 } 603 604 static unsigned getOptimizationLevelSize(ArgList &Args) { 605 if (Arg *A = Args.getLastArg(options::OPT_O_Group)) { 606 if (A->getOption().matches(options::OPT_O)) { 607 switch (A->getValue()[0]) { 608 default: 609 return 0; 610 case 's': 611 return 1; 612 case 'z': 613 return 2; 614 } 615 } 616 } 617 return 0; 618 } 619 620 static void GenerateArg(SmallVectorImpl<const char *> &Args, 621 llvm::opt::OptSpecifier OptSpecifier, 622 CompilerInvocation::StringAllocator SA) { 623 Option Opt = getDriverOptTable().getOption(OptSpecifier); 624 denormalizeSimpleFlag(Args, SA(Opt.getPrefix() + Opt.getName()), SA, 625 Option::OptionClass::FlagClass, 0); 626 } 627 628 static void GenerateArg(SmallVectorImpl<const char *> &Args, 629 llvm::opt::OptSpecifier OptSpecifier, 630 const Twine &Value, 631 CompilerInvocation::StringAllocator SA) { 632 Option Opt = getDriverOptTable().getOption(OptSpecifier); 633 denormalizeString(Args, SA(Opt.getPrefix() + Opt.getName()), SA, 634 Opt.getKind(), 0, Value); 635 } 636 637 // Parse command line arguments into CompilerInvocation. 638 using ParseFn = 639 llvm::function_ref<bool(CompilerInvocation &, ArrayRef<const char *>, 640 DiagnosticsEngine &, const char *)>; 641 642 // Generate command line arguments from CompilerInvocation. 643 using GenerateFn = llvm::function_ref<void( 644 CompilerInvocation &, SmallVectorImpl<const char *> &, 645 CompilerInvocation::StringAllocator)>; 646 647 /// May perform round-trip of command line arguments. By default, the round-trip 648 /// is enabled in assert builds. This can be overwritten at run-time via the 649 /// "-round-trip-args" and "-no-round-trip-args" command line flags, or via the 650 /// ForceRoundTrip parameter. 651 /// 652 /// During round-trip, the command line arguments are parsed into a dummy 653 /// CompilerInvocation, which is used to generate the command line arguments 654 /// again. The real CompilerInvocation is then created by parsing the generated 655 /// arguments, not the original ones. This (in combination with tests covering 656 /// argument behavior) ensures the generated command line is complete (doesn't 657 /// drop/mangle any arguments). 658 /// 659 /// Finally, we check the command line that was used to create the real 660 /// CompilerInvocation instance. By default, we compare it to the command line 661 /// the real CompilerInvocation generates. This checks whether the generator is 662 /// deterministic. If \p CheckAgainstOriginalInvocation is enabled, we instead 663 /// compare it to the original command line to verify the original command-line 664 /// was canonical and can round-trip exactly. 665 static bool RoundTrip(ParseFn Parse, GenerateFn Generate, 666 CompilerInvocation &RealInvocation, 667 CompilerInvocation &DummyInvocation, 668 ArrayRef<const char *> CommandLineArgs, 669 DiagnosticsEngine &Diags, const char *Argv0, 670 bool CheckAgainstOriginalInvocation = false, 671 bool ForceRoundTrip = false) { 672 #ifndef NDEBUG 673 bool DoRoundTripDefault = true; 674 #else 675 bool DoRoundTripDefault = false; 676 #endif 677 678 bool DoRoundTrip = DoRoundTripDefault; 679 if (ForceRoundTrip) { 680 DoRoundTrip = true; 681 } else { 682 for (const auto *Arg : CommandLineArgs) { 683 if (Arg == StringRef("-round-trip-args")) 684 DoRoundTrip = true; 685 if (Arg == StringRef("-no-round-trip-args")) 686 DoRoundTrip = false; 687 } 688 } 689 690 // If round-trip was not requested, simply run the parser with the real 691 // invocation diagnostics. 692 if (!DoRoundTrip) 693 return Parse(RealInvocation, CommandLineArgs, Diags, Argv0); 694 695 // Serializes quoted (and potentially escaped) arguments. 696 auto SerializeArgs = [](ArrayRef<const char *> Args) { 697 std::string Buffer; 698 llvm::raw_string_ostream OS(Buffer); 699 for (const char *Arg : Args) { 700 llvm::sys::printArg(OS, Arg, /*Quote=*/true); 701 OS << ' '; 702 } 703 OS.flush(); 704 return Buffer; 705 }; 706 707 // Setup a dummy DiagnosticsEngine. 708 DiagnosticsEngine DummyDiags(new DiagnosticIDs(), new DiagnosticOptions()); 709 DummyDiags.setClient(new TextDiagnosticBuffer()); 710 711 // Run the first parse on the original arguments with the dummy invocation and 712 // diagnostics. 713 if (!Parse(DummyInvocation, CommandLineArgs, DummyDiags, Argv0) || 714 DummyDiags.getNumWarnings() != 0) { 715 // If the first parse did not succeed, it must be user mistake (invalid 716 // command line arguments). We won't be able to generate arguments that 717 // would reproduce the same result. Let's fail again with the real 718 // invocation and diagnostics, so all side-effects of parsing are visible. 719 unsigned NumWarningsBefore = Diags.getNumWarnings(); 720 auto Success = Parse(RealInvocation, CommandLineArgs, Diags, Argv0); 721 if (!Success || Diags.getNumWarnings() != NumWarningsBefore) 722 return Success; 723 724 // Parse with original options and diagnostics succeeded even though it 725 // shouldn't have. Something is off. 726 Diags.Report(diag::err_cc1_round_trip_fail_then_ok); 727 Diags.Report(diag::note_cc1_round_trip_original) 728 << SerializeArgs(CommandLineArgs); 729 return false; 730 } 731 732 // Setup string allocator. 733 llvm::BumpPtrAllocator Alloc; 734 llvm::StringSaver StringPool(Alloc); 735 auto SA = [&StringPool](const Twine &Arg) { 736 return StringPool.save(Arg).data(); 737 }; 738 739 // Generate arguments from the dummy invocation. If Generate is the 740 // inverse of Parse, the newly generated arguments must have the same 741 // semantics as the original. 742 SmallVector<const char *> GeneratedArgs; 743 Generate(DummyInvocation, GeneratedArgs, SA); 744 745 // Run the second parse, now on the generated arguments, and with the real 746 // invocation and diagnostics. The result is what we will end up using for the 747 // rest of compilation, so if Generate is not inverse of Parse, something down 748 // the line will break. 749 bool Success2 = Parse(RealInvocation, GeneratedArgs, Diags, Argv0); 750 751 // The first parse on original arguments succeeded, but second parse of 752 // generated arguments failed. Something must be wrong with the generator. 753 if (!Success2) { 754 Diags.Report(diag::err_cc1_round_trip_ok_then_fail); 755 Diags.Report(diag::note_cc1_round_trip_generated) 756 << 1 << SerializeArgs(GeneratedArgs); 757 return false; 758 } 759 760 SmallVector<const char *> ComparisonArgs; 761 if (CheckAgainstOriginalInvocation) 762 // Compare against original arguments. 763 ComparisonArgs.assign(CommandLineArgs.begin(), CommandLineArgs.end()); 764 else 765 // Generate arguments again, this time from the options we will end up using 766 // for the rest of the compilation. 767 Generate(RealInvocation, ComparisonArgs, SA); 768 769 // Compares two lists of arguments. 770 auto Equal = [](const ArrayRef<const char *> A, 771 const ArrayRef<const char *> B) { 772 return std::equal(A.begin(), A.end(), B.begin(), B.end(), 773 [](const char *AElem, const char *BElem) { 774 return StringRef(AElem) == StringRef(BElem); 775 }); 776 }; 777 778 // If we generated different arguments from what we assume are two 779 // semantically equivalent CompilerInvocations, the Generate function may 780 // be non-deterministic. 781 if (!Equal(GeneratedArgs, ComparisonArgs)) { 782 Diags.Report(diag::err_cc1_round_trip_mismatch); 783 Diags.Report(diag::note_cc1_round_trip_generated) 784 << 1 << SerializeArgs(GeneratedArgs); 785 Diags.Report(diag::note_cc1_round_trip_generated) 786 << 2 << SerializeArgs(ComparisonArgs); 787 return false; 788 } 789 790 Diags.Report(diag::remark_cc1_round_trip_generated) 791 << 1 << SerializeArgs(GeneratedArgs); 792 Diags.Report(diag::remark_cc1_round_trip_generated) 793 << 2 << SerializeArgs(ComparisonArgs); 794 795 return Success2; 796 } 797 798 bool CompilerInvocation::checkCC1RoundTrip(ArrayRef<const char *> Args, 799 DiagnosticsEngine &Diags, 800 const char *Argv0) { 801 CompilerInvocation DummyInvocation1, DummyInvocation2; 802 return RoundTrip( 803 [](CompilerInvocation &Invocation, ArrayRef<const char *> CommandLineArgs, 804 DiagnosticsEngine &Diags, const char *Argv0) { 805 return CreateFromArgsImpl(Invocation, CommandLineArgs, Diags, Argv0); 806 }, 807 [](CompilerInvocation &Invocation, SmallVectorImpl<const char *> &Args, 808 StringAllocator SA) { 809 Args.push_back("-cc1"); 810 Invocation.generateCC1CommandLine(Args, SA); 811 }, 812 DummyInvocation1, DummyInvocation2, Args, Diags, Argv0, 813 /*CheckAgainstOriginalInvocation=*/true, /*ForceRoundTrip=*/true); 814 } 815 816 static void addDiagnosticArgs(ArgList &Args, OptSpecifier Group, 817 OptSpecifier GroupWithValue, 818 std::vector<std::string> &Diagnostics) { 819 for (auto *A : Args.filtered(Group)) { 820 if (A->getOption().getKind() == Option::FlagClass) { 821 // The argument is a pure flag (such as OPT_Wall or OPT_Wdeprecated). Add 822 // its name (minus the "W" or "R" at the beginning) to the diagnostics. 823 Diagnostics.push_back( 824 std::string(A->getOption().getName().drop_front(1))); 825 } else if (A->getOption().matches(GroupWithValue)) { 826 // This is -Wfoo= or -Rfoo=, where foo is the name of the diagnostic 827 // group. Add only the group name to the diagnostics. 828 Diagnostics.push_back( 829 std::string(A->getOption().getName().drop_front(1).rtrim("=-"))); 830 } else { 831 // Otherwise, add its value (for OPT_W_Joined and similar). 832 Diagnostics.push_back(A->getValue()); 833 } 834 } 835 } 836 837 // Parse the Static Analyzer configuration. If \p Diags is set to nullptr, 838 // it won't verify the input. 839 static void parseAnalyzerConfigs(AnalyzerOptions &AnOpts, 840 DiagnosticsEngine *Diags); 841 842 static void getAllNoBuiltinFuncValues(ArgList &Args, 843 std::vector<std::string> &Funcs) { 844 std::vector<std::string> Values = Args.getAllArgValues(OPT_fno_builtin_); 845 auto BuiltinEnd = llvm::partition(Values, Builtin::Context::isBuiltinFunc); 846 Funcs.insert(Funcs.end(), Values.begin(), BuiltinEnd); 847 } 848 849 static void GenerateAnalyzerArgs(AnalyzerOptions &Opts, 850 SmallVectorImpl<const char *> &Args, 851 CompilerInvocation::StringAllocator SA) { 852 const AnalyzerOptions *AnalyzerOpts = &Opts; 853 854 #define ANALYZER_OPTION_WITH_MARSHALLING(...) \ 855 GENERATE_OPTION_WITH_MARSHALLING(Args, SA, __VA_ARGS__) 856 #include "clang/Driver/Options.inc" 857 #undef ANALYZER_OPTION_WITH_MARSHALLING 858 859 if (Opts.AnalysisConstraintsOpt != RangeConstraintsModel) { 860 switch (Opts.AnalysisConstraintsOpt) { 861 #define ANALYSIS_CONSTRAINTS(NAME, CMDFLAG, DESC, CREATFN) \ 862 case NAME##Model: \ 863 GenerateArg(Args, OPT_analyzer_constraints, CMDFLAG, SA); \ 864 break; 865 #include "clang/StaticAnalyzer/Core/Analyses.def" 866 default: 867 llvm_unreachable("Tried to generate unknown analysis constraint."); 868 } 869 } 870 871 if (Opts.AnalysisDiagOpt != PD_HTML) { 872 switch (Opts.AnalysisDiagOpt) { 873 #define ANALYSIS_DIAGNOSTICS(NAME, CMDFLAG, DESC, CREATFN) \ 874 case PD_##NAME: \ 875 GenerateArg(Args, OPT_analyzer_output, CMDFLAG, SA); \ 876 break; 877 #include "clang/StaticAnalyzer/Core/Analyses.def" 878 default: 879 llvm_unreachable("Tried to generate unknown analysis diagnostic client."); 880 } 881 } 882 883 if (Opts.AnalysisPurgeOpt != PurgeStmt) { 884 switch (Opts.AnalysisPurgeOpt) { 885 #define ANALYSIS_PURGE(NAME, CMDFLAG, DESC) \ 886 case NAME: \ 887 GenerateArg(Args, OPT_analyzer_purge, CMDFLAG, SA); \ 888 break; 889 #include "clang/StaticAnalyzer/Core/Analyses.def" 890 default: 891 llvm_unreachable("Tried to generate unknown analysis purge mode."); 892 } 893 } 894 895 if (Opts.InliningMode != NoRedundancy) { 896 switch (Opts.InliningMode) { 897 #define ANALYSIS_INLINING_MODE(NAME, CMDFLAG, DESC) \ 898 case NAME: \ 899 GenerateArg(Args, OPT_analyzer_inlining_mode, CMDFLAG, SA); \ 900 break; 901 #include "clang/StaticAnalyzer/Core/Analyses.def" 902 default: 903 llvm_unreachable("Tried to generate unknown analysis inlining mode."); 904 } 905 } 906 907 for (const auto &CP : Opts.CheckersAndPackages) { 908 OptSpecifier Opt = 909 CP.second ? OPT_analyzer_checker : OPT_analyzer_disable_checker; 910 GenerateArg(Args, Opt, CP.first, SA); 911 } 912 913 AnalyzerOptions ConfigOpts; 914 parseAnalyzerConfigs(ConfigOpts, nullptr); 915 916 // Sort options by key to avoid relying on StringMap iteration order. 917 SmallVector<std::pair<StringRef, StringRef>, 4> SortedConfigOpts; 918 for (const auto &C : Opts.Config) 919 SortedConfigOpts.emplace_back(C.getKey(), C.getValue()); 920 llvm::sort(SortedConfigOpts, llvm::less_first()); 921 922 for (const auto &[Key, Value] : SortedConfigOpts) { 923 // Don't generate anything that came from parseAnalyzerConfigs. It would be 924 // redundant and may not be valid on the command line. 925 auto Entry = ConfigOpts.Config.find(Key); 926 if (Entry != ConfigOpts.Config.end() && Entry->getValue() == Value) 927 continue; 928 929 GenerateArg(Args, OPT_analyzer_config, Key + "=" + Value, SA); 930 } 931 932 // Nothing to generate for FullCompilerInvocation. 933 } 934 935 static bool ParseAnalyzerArgs(AnalyzerOptions &Opts, ArgList &Args, 936 DiagnosticsEngine &Diags) { 937 unsigned NumErrorsBefore = Diags.getNumErrors(); 938 939 AnalyzerOptions *AnalyzerOpts = &Opts; 940 941 #define ANALYZER_OPTION_WITH_MARSHALLING(...) \ 942 PARSE_OPTION_WITH_MARSHALLING(Args, Diags, __VA_ARGS__) 943 #include "clang/Driver/Options.inc" 944 #undef ANALYZER_OPTION_WITH_MARSHALLING 945 946 if (Arg *A = Args.getLastArg(OPT_analyzer_constraints)) { 947 StringRef Name = A->getValue(); 948 AnalysisConstraints Value = llvm::StringSwitch<AnalysisConstraints>(Name) 949 #define ANALYSIS_CONSTRAINTS(NAME, CMDFLAG, DESC, CREATFN) \ 950 .Case(CMDFLAG, NAME##Model) 951 #include "clang/StaticAnalyzer/Core/Analyses.def" 952 .Default(NumConstraints); 953 if (Value == NumConstraints) { 954 Diags.Report(diag::err_drv_invalid_value) 955 << A->getAsString(Args) << Name; 956 } else { 957 #ifndef LLVM_WITH_Z3 958 if (Value == AnalysisConstraints::Z3ConstraintsModel) { 959 Diags.Report(diag::err_analyzer_not_built_with_z3); 960 } 961 #endif // LLVM_WITH_Z3 962 Opts.AnalysisConstraintsOpt = Value; 963 } 964 } 965 966 if (Arg *A = Args.getLastArg(OPT_analyzer_output)) { 967 StringRef Name = A->getValue(); 968 AnalysisDiagClients Value = llvm::StringSwitch<AnalysisDiagClients>(Name) 969 #define ANALYSIS_DIAGNOSTICS(NAME, CMDFLAG, DESC, CREATFN) \ 970 .Case(CMDFLAG, PD_##NAME) 971 #include "clang/StaticAnalyzer/Core/Analyses.def" 972 .Default(NUM_ANALYSIS_DIAG_CLIENTS); 973 if (Value == NUM_ANALYSIS_DIAG_CLIENTS) { 974 Diags.Report(diag::err_drv_invalid_value) 975 << A->getAsString(Args) << Name; 976 } else { 977 Opts.AnalysisDiagOpt = Value; 978 } 979 } 980 981 if (Arg *A = Args.getLastArg(OPT_analyzer_purge)) { 982 StringRef Name = A->getValue(); 983 AnalysisPurgeMode Value = llvm::StringSwitch<AnalysisPurgeMode>(Name) 984 #define ANALYSIS_PURGE(NAME, CMDFLAG, DESC) \ 985 .Case(CMDFLAG, NAME) 986 #include "clang/StaticAnalyzer/Core/Analyses.def" 987 .Default(NumPurgeModes); 988 if (Value == NumPurgeModes) { 989 Diags.Report(diag::err_drv_invalid_value) 990 << A->getAsString(Args) << Name; 991 } else { 992 Opts.AnalysisPurgeOpt = Value; 993 } 994 } 995 996 if (Arg *A = Args.getLastArg(OPT_analyzer_inlining_mode)) { 997 StringRef Name = A->getValue(); 998 AnalysisInliningMode Value = llvm::StringSwitch<AnalysisInliningMode>(Name) 999 #define ANALYSIS_INLINING_MODE(NAME, CMDFLAG, DESC) \ 1000 .Case(CMDFLAG, NAME) 1001 #include "clang/StaticAnalyzer/Core/Analyses.def" 1002 .Default(NumInliningModes); 1003 if (Value == NumInliningModes) { 1004 Diags.Report(diag::err_drv_invalid_value) 1005 << A->getAsString(Args) << Name; 1006 } else { 1007 Opts.InliningMode = Value; 1008 } 1009 } 1010 1011 Opts.CheckersAndPackages.clear(); 1012 for (const Arg *A : 1013 Args.filtered(OPT_analyzer_checker, OPT_analyzer_disable_checker)) { 1014 A->claim(); 1015 bool IsEnabled = A->getOption().getID() == OPT_analyzer_checker; 1016 // We can have a list of comma separated checker names, e.g: 1017 // '-analyzer-checker=cocoa,unix' 1018 StringRef CheckerAndPackageList = A->getValue(); 1019 SmallVector<StringRef, 16> CheckersAndPackages; 1020 CheckerAndPackageList.split(CheckersAndPackages, ","); 1021 for (const StringRef &CheckerOrPackage : CheckersAndPackages) 1022 Opts.CheckersAndPackages.emplace_back(std::string(CheckerOrPackage), 1023 IsEnabled); 1024 } 1025 1026 // Go through the analyzer configuration options. 1027 for (const auto *A : Args.filtered(OPT_analyzer_config)) { 1028 1029 // We can have a list of comma separated config names, e.g: 1030 // '-analyzer-config key1=val1,key2=val2' 1031 StringRef configList = A->getValue(); 1032 SmallVector<StringRef, 4> configVals; 1033 configList.split(configVals, ","); 1034 for (const auto &configVal : configVals) { 1035 StringRef key, val; 1036 std::tie(key, val) = configVal.split("="); 1037 if (val.empty()) { 1038 Diags.Report(SourceLocation(), 1039 diag::err_analyzer_config_no_value) << configVal; 1040 break; 1041 } 1042 if (val.contains('=')) { 1043 Diags.Report(SourceLocation(), 1044 diag::err_analyzer_config_multiple_values) 1045 << configVal; 1046 break; 1047 } 1048 1049 // TODO: Check checker options too, possibly in CheckerRegistry. 1050 // Leave unknown non-checker configs unclaimed. 1051 if (!key.contains(":") && Opts.isUnknownAnalyzerConfig(key)) { 1052 if (Opts.ShouldEmitErrorsOnInvalidConfigValue) 1053 Diags.Report(diag::err_analyzer_config_unknown) << key; 1054 continue; 1055 } 1056 1057 A->claim(); 1058 Opts.Config[key] = std::string(val); 1059 } 1060 } 1061 1062 if (Opts.ShouldEmitErrorsOnInvalidConfigValue) 1063 parseAnalyzerConfigs(Opts, &Diags); 1064 else 1065 parseAnalyzerConfigs(Opts, nullptr); 1066 1067 llvm::raw_string_ostream os(Opts.FullCompilerInvocation); 1068 for (unsigned i = 0; i < Args.getNumInputArgStrings(); ++i) { 1069 if (i != 0) 1070 os << " "; 1071 os << Args.getArgString(i); 1072 } 1073 os.flush(); 1074 1075 return Diags.getNumErrors() == NumErrorsBefore; 1076 } 1077 1078 static StringRef getStringOption(AnalyzerOptions::ConfigTable &Config, 1079 StringRef OptionName, StringRef DefaultVal) { 1080 return Config.insert({OptionName, std::string(DefaultVal)}).first->second; 1081 } 1082 1083 static void initOption(AnalyzerOptions::ConfigTable &Config, 1084 DiagnosticsEngine *Diags, 1085 StringRef &OptionField, StringRef Name, 1086 StringRef DefaultVal) { 1087 // String options may be known to invalid (e.g. if the expected string is a 1088 // file name, but the file does not exist), those will have to be checked in 1089 // parseConfigs. 1090 OptionField = getStringOption(Config, Name, DefaultVal); 1091 } 1092 1093 static void initOption(AnalyzerOptions::ConfigTable &Config, 1094 DiagnosticsEngine *Diags, 1095 bool &OptionField, StringRef Name, bool DefaultVal) { 1096 auto PossiblyInvalidVal = 1097 llvm::StringSwitch<std::optional<bool>>( 1098 getStringOption(Config, Name, (DefaultVal ? "true" : "false"))) 1099 .Case("true", true) 1100 .Case("false", false) 1101 .Default(std::nullopt); 1102 1103 if (!PossiblyInvalidVal) { 1104 if (Diags) 1105 Diags->Report(diag::err_analyzer_config_invalid_input) 1106 << Name << "a boolean"; 1107 else 1108 OptionField = DefaultVal; 1109 } else 1110 OptionField = *PossiblyInvalidVal; 1111 } 1112 1113 static void initOption(AnalyzerOptions::ConfigTable &Config, 1114 DiagnosticsEngine *Diags, 1115 unsigned &OptionField, StringRef Name, 1116 unsigned DefaultVal) { 1117 1118 OptionField = DefaultVal; 1119 bool HasFailed = getStringOption(Config, Name, std::to_string(DefaultVal)) 1120 .getAsInteger(0, OptionField); 1121 if (Diags && HasFailed) 1122 Diags->Report(diag::err_analyzer_config_invalid_input) 1123 << Name << "an unsigned"; 1124 } 1125 1126 static void parseAnalyzerConfigs(AnalyzerOptions &AnOpts, 1127 DiagnosticsEngine *Diags) { 1128 // TODO: There's no need to store the entire configtable, it'd be plenty 1129 // enough to store checker options. 1130 1131 #define ANALYZER_OPTION(TYPE, NAME, CMDFLAG, DESC, DEFAULT_VAL) \ 1132 initOption(AnOpts.Config, Diags, AnOpts.NAME, CMDFLAG, DEFAULT_VAL); 1133 #define ANALYZER_OPTION_DEPENDS_ON_USER_MODE(...) 1134 #include "clang/StaticAnalyzer/Core/AnalyzerOptions.def" 1135 1136 assert(AnOpts.UserMode == "shallow" || AnOpts.UserMode == "deep"); 1137 const bool InShallowMode = AnOpts.UserMode == "shallow"; 1138 1139 #define ANALYZER_OPTION(...) 1140 #define ANALYZER_OPTION_DEPENDS_ON_USER_MODE(TYPE, NAME, CMDFLAG, DESC, \ 1141 SHALLOW_VAL, DEEP_VAL) \ 1142 initOption(AnOpts.Config, Diags, AnOpts.NAME, CMDFLAG, \ 1143 InShallowMode ? SHALLOW_VAL : DEEP_VAL); 1144 #include "clang/StaticAnalyzer/Core/AnalyzerOptions.def" 1145 1146 // At this point, AnalyzerOptions is configured. Let's validate some options. 1147 1148 // FIXME: Here we try to validate the silenced checkers or packages are valid. 1149 // The current approach only validates the registered checkers which does not 1150 // contain the runtime enabled checkers and optimally we would validate both. 1151 if (!AnOpts.RawSilencedCheckersAndPackages.empty()) { 1152 std::vector<StringRef> Checkers = 1153 AnOpts.getRegisteredCheckers(/*IncludeExperimental=*/true); 1154 std::vector<StringRef> Packages = 1155 AnOpts.getRegisteredPackages(/*IncludeExperimental=*/true); 1156 1157 SmallVector<StringRef, 16> CheckersAndPackages; 1158 AnOpts.RawSilencedCheckersAndPackages.split(CheckersAndPackages, ";"); 1159 1160 for (const StringRef &CheckerOrPackage : CheckersAndPackages) { 1161 if (Diags) { 1162 bool IsChecker = CheckerOrPackage.contains('.'); 1163 bool IsValidName = IsChecker 1164 ? llvm::is_contained(Checkers, CheckerOrPackage) 1165 : llvm::is_contained(Packages, CheckerOrPackage); 1166 1167 if (!IsValidName) 1168 Diags->Report(diag::err_unknown_analyzer_checker_or_package) 1169 << CheckerOrPackage; 1170 } 1171 1172 AnOpts.SilencedCheckersAndPackages.emplace_back(CheckerOrPackage); 1173 } 1174 } 1175 1176 if (!Diags) 1177 return; 1178 1179 if (AnOpts.ShouldTrackConditionsDebug && !AnOpts.ShouldTrackConditions) 1180 Diags->Report(diag::err_analyzer_config_invalid_input) 1181 << "track-conditions-debug" << "'track-conditions' to also be enabled"; 1182 1183 if (!AnOpts.CTUDir.empty() && !llvm::sys::fs::is_directory(AnOpts.CTUDir)) 1184 Diags->Report(diag::err_analyzer_config_invalid_input) << "ctu-dir" 1185 << "a filename"; 1186 1187 if (!AnOpts.ModelPath.empty() && 1188 !llvm::sys::fs::is_directory(AnOpts.ModelPath)) 1189 Diags->Report(diag::err_analyzer_config_invalid_input) << "model-path" 1190 << "a filename"; 1191 } 1192 1193 /// Generate a remark argument. This is an inverse of `ParseOptimizationRemark`. 1194 static void 1195 GenerateOptimizationRemark(SmallVectorImpl<const char *> &Args, 1196 CompilerInvocation::StringAllocator SA, 1197 OptSpecifier OptEQ, StringRef Name, 1198 const CodeGenOptions::OptRemark &Remark) { 1199 if (Remark.hasValidPattern()) { 1200 GenerateArg(Args, OptEQ, Remark.Pattern, SA); 1201 } else if (Remark.Kind == CodeGenOptions::RK_Enabled) { 1202 GenerateArg(Args, OPT_R_Joined, Name, SA); 1203 } else if (Remark.Kind == CodeGenOptions::RK_Disabled) { 1204 GenerateArg(Args, OPT_R_Joined, StringRef("no-") + Name, SA); 1205 } 1206 } 1207 1208 /// Parse a remark command line argument. It may be missing, disabled/enabled by 1209 /// '-R[no-]group' or specified with a regular expression by '-Rgroup=regexp'. 1210 /// On top of that, it can be disabled/enabled globally by '-R[no-]everything'. 1211 static CodeGenOptions::OptRemark 1212 ParseOptimizationRemark(DiagnosticsEngine &Diags, ArgList &Args, 1213 OptSpecifier OptEQ, StringRef Name) { 1214 CodeGenOptions::OptRemark Result; 1215 1216 auto InitializeResultPattern = [&Diags, &Args, &Result](const Arg *A, 1217 StringRef Pattern) { 1218 Result.Pattern = Pattern.str(); 1219 1220 std::string RegexError; 1221 Result.Regex = std::make_shared<llvm::Regex>(Result.Pattern); 1222 if (!Result.Regex->isValid(RegexError)) { 1223 Diags.Report(diag::err_drv_optimization_remark_pattern) 1224 << RegexError << A->getAsString(Args); 1225 return false; 1226 } 1227 1228 return true; 1229 }; 1230 1231 for (Arg *A : Args) { 1232 if (A->getOption().matches(OPT_R_Joined)) { 1233 StringRef Value = A->getValue(); 1234 1235 if (Value == Name) 1236 Result.Kind = CodeGenOptions::RK_Enabled; 1237 else if (Value == "everything") 1238 Result.Kind = CodeGenOptions::RK_EnabledEverything; 1239 else if (Value.split('-') == std::make_pair(StringRef("no"), Name)) 1240 Result.Kind = CodeGenOptions::RK_Disabled; 1241 else if (Value == "no-everything") 1242 Result.Kind = CodeGenOptions::RK_DisabledEverything; 1243 else 1244 continue; 1245 1246 if (Result.Kind == CodeGenOptions::RK_Disabled || 1247 Result.Kind == CodeGenOptions::RK_DisabledEverything) { 1248 Result.Pattern = ""; 1249 Result.Regex = nullptr; 1250 } else { 1251 InitializeResultPattern(A, ".*"); 1252 } 1253 } else if (A->getOption().matches(OptEQ)) { 1254 Result.Kind = CodeGenOptions::RK_WithPattern; 1255 if (!InitializeResultPattern(A, A->getValue())) 1256 return CodeGenOptions::OptRemark(); 1257 } 1258 } 1259 1260 return Result; 1261 } 1262 1263 static bool parseDiagnosticLevelMask(StringRef FlagName, 1264 const std::vector<std::string> &Levels, 1265 DiagnosticsEngine &Diags, 1266 DiagnosticLevelMask &M) { 1267 bool Success = true; 1268 for (const auto &Level : Levels) { 1269 DiagnosticLevelMask const PM = 1270 llvm::StringSwitch<DiagnosticLevelMask>(Level) 1271 .Case("note", DiagnosticLevelMask::Note) 1272 .Case("remark", DiagnosticLevelMask::Remark) 1273 .Case("warning", DiagnosticLevelMask::Warning) 1274 .Case("error", DiagnosticLevelMask::Error) 1275 .Default(DiagnosticLevelMask::None); 1276 if (PM == DiagnosticLevelMask::None) { 1277 Success = false; 1278 Diags.Report(diag::err_drv_invalid_value) << FlagName << Level; 1279 } 1280 M = M | PM; 1281 } 1282 return Success; 1283 } 1284 1285 static void parseSanitizerKinds(StringRef FlagName, 1286 const std::vector<std::string> &Sanitizers, 1287 DiagnosticsEngine &Diags, SanitizerSet &S) { 1288 for (const auto &Sanitizer : Sanitizers) { 1289 SanitizerMask K = parseSanitizerValue(Sanitizer, /*AllowGroups=*/false); 1290 if (K == SanitizerMask()) 1291 Diags.Report(diag::err_drv_invalid_value) << FlagName << Sanitizer; 1292 else 1293 S.set(K, true); 1294 } 1295 } 1296 1297 static SmallVector<StringRef, 4> serializeSanitizerKinds(SanitizerSet S) { 1298 SmallVector<StringRef, 4> Values; 1299 serializeSanitizerSet(S, Values); 1300 return Values; 1301 } 1302 1303 static void parseXRayInstrumentationBundle(StringRef FlagName, StringRef Bundle, 1304 ArgList &Args, DiagnosticsEngine &D, 1305 XRayInstrSet &S) { 1306 llvm::SmallVector<StringRef, 2> BundleParts; 1307 llvm::SplitString(Bundle, BundleParts, ","); 1308 for (const auto &B : BundleParts) { 1309 auto Mask = parseXRayInstrValue(B); 1310 if (Mask == XRayInstrKind::None) 1311 if (B != "none") 1312 D.Report(diag::err_drv_invalid_value) << FlagName << Bundle; 1313 else 1314 S.Mask = Mask; 1315 else if (Mask == XRayInstrKind::All) 1316 S.Mask = Mask; 1317 else 1318 S.set(Mask, true); 1319 } 1320 } 1321 1322 static std::string serializeXRayInstrumentationBundle(const XRayInstrSet &S) { 1323 llvm::SmallVector<StringRef, 2> BundleParts; 1324 serializeXRayInstrValue(S, BundleParts); 1325 std::string Buffer; 1326 llvm::raw_string_ostream OS(Buffer); 1327 llvm::interleave(BundleParts, OS, [&OS](StringRef Part) { OS << Part; }, ","); 1328 return Buffer; 1329 } 1330 1331 // Set the profile kind using fprofile-instrument-use-path. 1332 static void setPGOUseInstrumentor(CodeGenOptions &Opts, 1333 const Twine &ProfileName, 1334 llvm::vfs::FileSystem &FS, 1335 DiagnosticsEngine &Diags) { 1336 auto ReaderOrErr = llvm::IndexedInstrProfReader::create(ProfileName, FS); 1337 if (auto E = ReaderOrErr.takeError()) { 1338 unsigned DiagID = Diags.getCustomDiagID(DiagnosticsEngine::Error, 1339 "Error in reading profile %0: %1"); 1340 llvm::handleAllErrors(std::move(E), [&](const llvm::ErrorInfoBase &EI) { 1341 Diags.Report(DiagID) << ProfileName.str() << EI.message(); 1342 }); 1343 return; 1344 } 1345 std::unique_ptr<llvm::IndexedInstrProfReader> PGOReader = 1346 std::move(ReaderOrErr.get()); 1347 // Currently memprof profiles are only added at the IR level. Mark the profile 1348 // type as IR in that case as well and the subsequent matching needs to detect 1349 // which is available (might be one or both). 1350 if (PGOReader->isIRLevelProfile() || PGOReader->hasMemoryProfile()) { 1351 if (PGOReader->hasCSIRLevelProfile()) 1352 Opts.setProfileUse(CodeGenOptions::ProfileCSIRInstr); 1353 else 1354 Opts.setProfileUse(CodeGenOptions::ProfileIRInstr); 1355 } else 1356 Opts.setProfileUse(CodeGenOptions::ProfileClangInstr); 1357 } 1358 1359 void CompilerInvocation::GenerateCodeGenArgs( 1360 const CodeGenOptions &Opts, SmallVectorImpl<const char *> &Args, 1361 StringAllocator SA, const llvm::Triple &T, const std::string &OutputFile, 1362 const LangOptions *LangOpts) { 1363 const CodeGenOptions &CodeGenOpts = Opts; 1364 1365 if (Opts.OptimizationLevel == 0) 1366 GenerateArg(Args, OPT_O0, SA); 1367 else 1368 GenerateArg(Args, OPT_O, Twine(Opts.OptimizationLevel), SA); 1369 1370 #define CODEGEN_OPTION_WITH_MARSHALLING(...) \ 1371 GENERATE_OPTION_WITH_MARSHALLING(Args, SA, __VA_ARGS__) 1372 #include "clang/Driver/Options.inc" 1373 #undef CODEGEN_OPTION_WITH_MARSHALLING 1374 1375 if (Opts.OptimizationLevel > 0) { 1376 if (Opts.Inlining == CodeGenOptions::NormalInlining) 1377 GenerateArg(Args, OPT_finline_functions, SA); 1378 else if (Opts.Inlining == CodeGenOptions::OnlyHintInlining) 1379 GenerateArg(Args, OPT_finline_hint_functions, SA); 1380 else if (Opts.Inlining == CodeGenOptions::OnlyAlwaysInlining) 1381 GenerateArg(Args, OPT_fno_inline, SA); 1382 } 1383 1384 if (Opts.DirectAccessExternalData && LangOpts->PICLevel != 0) 1385 GenerateArg(Args, OPT_fdirect_access_external_data, SA); 1386 else if (!Opts.DirectAccessExternalData && LangOpts->PICLevel == 0) 1387 GenerateArg(Args, OPT_fno_direct_access_external_data, SA); 1388 1389 std::optional<StringRef> DebugInfoVal; 1390 switch (Opts.DebugInfo) { 1391 case llvm::codegenoptions::DebugLineTablesOnly: 1392 DebugInfoVal = "line-tables-only"; 1393 break; 1394 case llvm::codegenoptions::DebugDirectivesOnly: 1395 DebugInfoVal = "line-directives-only"; 1396 break; 1397 case llvm::codegenoptions::DebugInfoConstructor: 1398 DebugInfoVal = "constructor"; 1399 break; 1400 case llvm::codegenoptions::LimitedDebugInfo: 1401 DebugInfoVal = "limited"; 1402 break; 1403 case llvm::codegenoptions::FullDebugInfo: 1404 DebugInfoVal = "standalone"; 1405 break; 1406 case llvm::codegenoptions::UnusedTypeInfo: 1407 DebugInfoVal = "unused-types"; 1408 break; 1409 case llvm::codegenoptions::NoDebugInfo: // default value 1410 DebugInfoVal = std::nullopt; 1411 break; 1412 case llvm::codegenoptions::LocTrackingOnly: // implied value 1413 DebugInfoVal = std::nullopt; 1414 break; 1415 } 1416 if (DebugInfoVal) 1417 GenerateArg(Args, OPT_debug_info_kind_EQ, *DebugInfoVal, SA); 1418 1419 for (const auto &Prefix : Opts.DebugPrefixMap) 1420 GenerateArg(Args, OPT_fdebug_prefix_map_EQ, 1421 Prefix.first + "=" + Prefix.second, SA); 1422 1423 for (const auto &Prefix : Opts.CoveragePrefixMap) 1424 GenerateArg(Args, OPT_fcoverage_prefix_map_EQ, 1425 Prefix.first + "=" + Prefix.second, SA); 1426 1427 if (Opts.NewStructPathTBAA) 1428 GenerateArg(Args, OPT_new_struct_path_tbaa, SA); 1429 1430 if (Opts.OptimizeSize == 1) 1431 GenerateArg(Args, OPT_O, "s", SA); 1432 else if (Opts.OptimizeSize == 2) 1433 GenerateArg(Args, OPT_O, "z", SA); 1434 1435 // SimplifyLibCalls is set only in the absence of -fno-builtin and 1436 // -ffreestanding. We'll consider that when generating them. 1437 1438 // NoBuiltinFuncs are generated by LangOptions. 1439 1440 if (Opts.UnrollLoops && Opts.OptimizationLevel <= 1) 1441 GenerateArg(Args, OPT_funroll_loops, SA); 1442 else if (!Opts.UnrollLoops && Opts.OptimizationLevel > 1) 1443 GenerateArg(Args, OPT_fno_unroll_loops, SA); 1444 1445 if (!Opts.BinutilsVersion.empty()) 1446 GenerateArg(Args, OPT_fbinutils_version_EQ, Opts.BinutilsVersion, SA); 1447 1448 if (Opts.DebugNameTable == 1449 static_cast<unsigned>(llvm::DICompileUnit::DebugNameTableKind::GNU)) 1450 GenerateArg(Args, OPT_ggnu_pubnames, SA); 1451 else if (Opts.DebugNameTable == 1452 static_cast<unsigned>( 1453 llvm::DICompileUnit::DebugNameTableKind::Default)) 1454 GenerateArg(Args, OPT_gpubnames, SA); 1455 1456 auto TNK = Opts.getDebugSimpleTemplateNames(); 1457 if (TNK != llvm::codegenoptions::DebugTemplateNamesKind::Full) { 1458 if (TNK == llvm::codegenoptions::DebugTemplateNamesKind::Simple) 1459 GenerateArg(Args, OPT_gsimple_template_names_EQ, "simple", SA); 1460 else if (TNK == llvm::codegenoptions::DebugTemplateNamesKind::Mangled) 1461 GenerateArg(Args, OPT_gsimple_template_names_EQ, "mangled", SA); 1462 } 1463 // ProfileInstrumentUsePath is marshalled automatically, no need to generate 1464 // it or PGOUseInstrumentor. 1465 1466 if (Opts.TimePasses) { 1467 if (Opts.TimePassesPerRun) 1468 GenerateArg(Args, OPT_ftime_report_EQ, "per-pass-run", SA); 1469 else 1470 GenerateArg(Args, OPT_ftime_report, SA); 1471 } 1472 1473 if (Opts.PrepareForLTO && !Opts.PrepareForThinLTO) 1474 GenerateArg(Args, OPT_flto_EQ, "full", SA); 1475 1476 if (Opts.PrepareForThinLTO) 1477 GenerateArg(Args, OPT_flto_EQ, "thin", SA); 1478 1479 if (!Opts.ThinLTOIndexFile.empty()) 1480 GenerateArg(Args, OPT_fthinlto_index_EQ, Opts.ThinLTOIndexFile, SA); 1481 1482 if (Opts.SaveTempsFilePrefix == OutputFile) 1483 GenerateArg(Args, OPT_save_temps_EQ, "obj", SA); 1484 1485 StringRef MemProfileBasename("memprof.profraw"); 1486 if (!Opts.MemoryProfileOutput.empty()) { 1487 if (Opts.MemoryProfileOutput == MemProfileBasename) { 1488 GenerateArg(Args, OPT_fmemory_profile, SA); 1489 } else { 1490 size_t ArgLength = 1491 Opts.MemoryProfileOutput.size() - MemProfileBasename.size(); 1492 GenerateArg(Args, OPT_fmemory_profile_EQ, 1493 Opts.MemoryProfileOutput.substr(0, ArgLength), SA); 1494 } 1495 } 1496 1497 if (memcmp(Opts.CoverageVersion, "408*", 4) != 0) 1498 GenerateArg(Args, OPT_coverage_version_EQ, 1499 StringRef(Opts.CoverageVersion, 4), SA); 1500 1501 // TODO: Check if we need to generate arguments stored in CmdArgs. (Namely 1502 // '-fembed_bitcode', which does not map to any CompilerInvocation field and 1503 // won't be generated.) 1504 1505 if (Opts.XRayInstrumentationBundle.Mask != XRayInstrKind::All) { 1506 std::string InstrBundle = 1507 serializeXRayInstrumentationBundle(Opts.XRayInstrumentationBundle); 1508 if (!InstrBundle.empty()) 1509 GenerateArg(Args, OPT_fxray_instrumentation_bundle, InstrBundle, SA); 1510 } 1511 1512 if (Opts.CFProtectionReturn && Opts.CFProtectionBranch) 1513 GenerateArg(Args, OPT_fcf_protection_EQ, "full", SA); 1514 else if (Opts.CFProtectionReturn) 1515 GenerateArg(Args, OPT_fcf_protection_EQ, "return", SA); 1516 else if (Opts.CFProtectionBranch) 1517 GenerateArg(Args, OPT_fcf_protection_EQ, "branch", SA); 1518 1519 if (Opts.FunctionReturnThunks) 1520 GenerateArg(Args, OPT_mfunction_return_EQ, "thunk-extern", SA); 1521 1522 for (const auto &F : Opts.LinkBitcodeFiles) { 1523 bool Builtint = F.LinkFlags == llvm::Linker::Flags::LinkOnlyNeeded && 1524 F.PropagateAttrs && F.Internalize; 1525 GenerateArg(Args, 1526 Builtint ? OPT_mlink_builtin_bitcode : OPT_mlink_bitcode_file, 1527 F.Filename, SA); 1528 } 1529 1530 if (Opts.EmulatedTLS) 1531 GenerateArg(Args, OPT_femulated_tls, SA); 1532 1533 if (Opts.FPDenormalMode != llvm::DenormalMode::getIEEE()) 1534 GenerateArg(Args, OPT_fdenormal_fp_math_EQ, Opts.FPDenormalMode.str(), SA); 1535 1536 if ((Opts.FPDenormalMode != Opts.FP32DenormalMode) || 1537 (Opts.FP32DenormalMode != llvm::DenormalMode::getIEEE())) 1538 GenerateArg(Args, OPT_fdenormal_fp_math_f32_EQ, Opts.FP32DenormalMode.str(), 1539 SA); 1540 1541 if (Opts.StructReturnConvention == CodeGenOptions::SRCK_OnStack) { 1542 OptSpecifier Opt = 1543 T.isPPC32() ? OPT_maix_struct_return : OPT_fpcc_struct_return; 1544 GenerateArg(Args, Opt, SA); 1545 } else if (Opts.StructReturnConvention == CodeGenOptions::SRCK_InRegs) { 1546 OptSpecifier Opt = 1547 T.isPPC32() ? OPT_msvr4_struct_return : OPT_freg_struct_return; 1548 GenerateArg(Args, Opt, SA); 1549 } 1550 1551 if (Opts.EnableAIXExtendedAltivecABI) 1552 GenerateArg(Args, OPT_mabi_EQ_vec_extabi, SA); 1553 1554 if (Opts.XCOFFReadOnlyPointers) 1555 GenerateArg(Args, OPT_mxcoff_roptr, SA); 1556 1557 if (!Opts.OptRecordPasses.empty()) 1558 GenerateArg(Args, OPT_opt_record_passes, Opts.OptRecordPasses, SA); 1559 1560 if (!Opts.OptRecordFormat.empty()) 1561 GenerateArg(Args, OPT_opt_record_format, Opts.OptRecordFormat, SA); 1562 1563 GenerateOptimizationRemark(Args, SA, OPT_Rpass_EQ, "pass", 1564 Opts.OptimizationRemark); 1565 1566 GenerateOptimizationRemark(Args, SA, OPT_Rpass_missed_EQ, "pass-missed", 1567 Opts.OptimizationRemarkMissed); 1568 1569 GenerateOptimizationRemark(Args, SA, OPT_Rpass_analysis_EQ, "pass-analysis", 1570 Opts.OptimizationRemarkAnalysis); 1571 1572 GenerateArg(Args, OPT_fdiagnostics_hotness_threshold_EQ, 1573 Opts.DiagnosticsHotnessThreshold 1574 ? Twine(*Opts.DiagnosticsHotnessThreshold) 1575 : "auto", 1576 SA); 1577 1578 GenerateArg(Args, OPT_fdiagnostics_misexpect_tolerance_EQ, 1579 Twine(*Opts.DiagnosticsMisExpectTolerance), SA); 1580 1581 for (StringRef Sanitizer : serializeSanitizerKinds(Opts.SanitizeRecover)) 1582 GenerateArg(Args, OPT_fsanitize_recover_EQ, Sanitizer, SA); 1583 1584 for (StringRef Sanitizer : serializeSanitizerKinds(Opts.SanitizeTrap)) 1585 GenerateArg(Args, OPT_fsanitize_trap_EQ, Sanitizer, SA); 1586 1587 if (!Opts.EmitVersionIdentMetadata) 1588 GenerateArg(Args, OPT_Qn, SA); 1589 1590 switch (Opts.FiniteLoops) { 1591 case CodeGenOptions::FiniteLoopsKind::Language: 1592 break; 1593 case CodeGenOptions::FiniteLoopsKind::Always: 1594 GenerateArg(Args, OPT_ffinite_loops, SA); 1595 break; 1596 case CodeGenOptions::FiniteLoopsKind::Never: 1597 GenerateArg(Args, OPT_fno_finite_loops, SA); 1598 break; 1599 } 1600 } 1601 1602 bool CompilerInvocation::ParseCodeGenArgs(CodeGenOptions &Opts, ArgList &Args, 1603 InputKind IK, 1604 DiagnosticsEngine &Diags, 1605 const llvm::Triple &T, 1606 const std::string &OutputFile, 1607 const LangOptions &LangOptsRef) { 1608 unsigned NumErrorsBefore = Diags.getNumErrors(); 1609 1610 unsigned OptimizationLevel = getOptimizationLevel(Args, IK, Diags); 1611 // TODO: This could be done in Driver 1612 unsigned MaxOptLevel = 3; 1613 if (OptimizationLevel > MaxOptLevel) { 1614 // If the optimization level is not supported, fall back on the default 1615 // optimization 1616 Diags.Report(diag::warn_drv_optimization_value) 1617 << Args.getLastArg(OPT_O)->getAsString(Args) << "-O" << MaxOptLevel; 1618 OptimizationLevel = MaxOptLevel; 1619 } 1620 Opts.OptimizationLevel = OptimizationLevel; 1621 1622 // The key paths of codegen options defined in Options.td start with 1623 // "CodeGenOpts.". Let's provide the expected variable name and type. 1624 CodeGenOptions &CodeGenOpts = Opts; 1625 // Some codegen options depend on language options. Let's provide the expected 1626 // variable name and type. 1627 const LangOptions *LangOpts = &LangOptsRef; 1628 1629 #define CODEGEN_OPTION_WITH_MARSHALLING(...) \ 1630 PARSE_OPTION_WITH_MARSHALLING(Args, Diags, __VA_ARGS__) 1631 #include "clang/Driver/Options.inc" 1632 #undef CODEGEN_OPTION_WITH_MARSHALLING 1633 1634 // At O0 we want to fully disable inlining outside of cases marked with 1635 // 'alwaysinline' that are required for correctness. 1636 if (Opts.OptimizationLevel == 0) { 1637 Opts.setInlining(CodeGenOptions::OnlyAlwaysInlining); 1638 } else if (const Arg *A = Args.getLastArg(options::OPT_finline_functions, 1639 options::OPT_finline_hint_functions, 1640 options::OPT_fno_inline_functions, 1641 options::OPT_fno_inline)) { 1642 // Explicit inlining flags can disable some or all inlining even at 1643 // optimization levels above zero. 1644 if (A->getOption().matches(options::OPT_finline_functions)) 1645 Opts.setInlining(CodeGenOptions::NormalInlining); 1646 else if (A->getOption().matches(options::OPT_finline_hint_functions)) 1647 Opts.setInlining(CodeGenOptions::OnlyHintInlining); 1648 else 1649 Opts.setInlining(CodeGenOptions::OnlyAlwaysInlining); 1650 } else { 1651 Opts.setInlining(CodeGenOptions::NormalInlining); 1652 } 1653 1654 // PIC defaults to -fno-direct-access-external-data while non-PIC defaults to 1655 // -fdirect-access-external-data. 1656 Opts.DirectAccessExternalData = 1657 Args.hasArg(OPT_fdirect_access_external_data) || 1658 (!Args.hasArg(OPT_fno_direct_access_external_data) && 1659 LangOpts->PICLevel == 0); 1660 1661 if (Arg *A = Args.getLastArg(OPT_debug_info_kind_EQ)) { 1662 unsigned Val = 1663 llvm::StringSwitch<unsigned>(A->getValue()) 1664 .Case("line-tables-only", llvm::codegenoptions::DebugLineTablesOnly) 1665 .Case("line-directives-only", 1666 llvm::codegenoptions::DebugDirectivesOnly) 1667 .Case("constructor", llvm::codegenoptions::DebugInfoConstructor) 1668 .Case("limited", llvm::codegenoptions::LimitedDebugInfo) 1669 .Case("standalone", llvm::codegenoptions::FullDebugInfo) 1670 .Case("unused-types", llvm::codegenoptions::UnusedTypeInfo) 1671 .Default(~0U); 1672 if (Val == ~0U) 1673 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) 1674 << A->getValue(); 1675 else 1676 Opts.setDebugInfo(static_cast<llvm::codegenoptions::DebugInfoKind>(Val)); 1677 } 1678 1679 // If -fuse-ctor-homing is set and limited debug info is already on, then use 1680 // constructor homing, and vice versa for -fno-use-ctor-homing. 1681 if (const Arg *A = 1682 Args.getLastArg(OPT_fuse_ctor_homing, OPT_fno_use_ctor_homing)) { 1683 if (A->getOption().matches(OPT_fuse_ctor_homing) && 1684 Opts.getDebugInfo() == llvm::codegenoptions::LimitedDebugInfo) 1685 Opts.setDebugInfo(llvm::codegenoptions::DebugInfoConstructor); 1686 if (A->getOption().matches(OPT_fno_use_ctor_homing) && 1687 Opts.getDebugInfo() == llvm::codegenoptions::DebugInfoConstructor) 1688 Opts.setDebugInfo(llvm::codegenoptions::LimitedDebugInfo); 1689 } 1690 1691 for (const auto &Arg : Args.getAllArgValues(OPT_fdebug_prefix_map_EQ)) { 1692 auto Split = StringRef(Arg).split('='); 1693 Opts.DebugPrefixMap.emplace_back(Split.first, Split.second); 1694 } 1695 1696 for (const auto &Arg : Args.getAllArgValues(OPT_fcoverage_prefix_map_EQ)) { 1697 auto Split = StringRef(Arg).split('='); 1698 Opts.CoveragePrefixMap.emplace_back(Split.first, Split.second); 1699 } 1700 1701 const llvm::Triple::ArchType DebugEntryValueArchs[] = { 1702 llvm::Triple::x86, llvm::Triple::x86_64, llvm::Triple::aarch64, 1703 llvm::Triple::arm, llvm::Triple::armeb, llvm::Triple::mips, 1704 llvm::Triple::mipsel, llvm::Triple::mips64, llvm::Triple::mips64el}; 1705 1706 if (Opts.OptimizationLevel > 0 && Opts.hasReducedDebugInfo() && 1707 llvm::is_contained(DebugEntryValueArchs, T.getArch())) 1708 Opts.EmitCallSiteInfo = true; 1709 1710 if (!Opts.EnableDIPreservationVerify && Opts.DIBugsReportFilePath.size()) { 1711 Diags.Report(diag::warn_ignoring_verify_debuginfo_preserve_export) 1712 << Opts.DIBugsReportFilePath; 1713 Opts.DIBugsReportFilePath = ""; 1714 } 1715 1716 Opts.NewStructPathTBAA = !Args.hasArg(OPT_no_struct_path_tbaa) && 1717 Args.hasArg(OPT_new_struct_path_tbaa); 1718 Opts.OptimizeSize = getOptimizationLevelSize(Args); 1719 Opts.SimplifyLibCalls = !LangOpts->NoBuiltin; 1720 if (Opts.SimplifyLibCalls) 1721 Opts.NoBuiltinFuncs = LangOpts->NoBuiltinFuncs; 1722 Opts.UnrollLoops = 1723 Args.hasFlag(OPT_funroll_loops, OPT_fno_unroll_loops, 1724 (Opts.OptimizationLevel > 1)); 1725 Opts.BinutilsVersion = 1726 std::string(Args.getLastArgValue(OPT_fbinutils_version_EQ)); 1727 1728 Opts.DebugNameTable = static_cast<unsigned>( 1729 Args.hasArg(OPT_ggnu_pubnames) 1730 ? llvm::DICompileUnit::DebugNameTableKind::GNU 1731 : Args.hasArg(OPT_gpubnames) 1732 ? llvm::DICompileUnit::DebugNameTableKind::Default 1733 : llvm::DICompileUnit::DebugNameTableKind::None); 1734 if (const Arg *A = Args.getLastArg(OPT_gsimple_template_names_EQ)) { 1735 StringRef Value = A->getValue(); 1736 if (Value != "simple" && Value != "mangled") 1737 Diags.Report(diag::err_drv_unsupported_option_argument) 1738 << A->getSpelling() << A->getValue(); 1739 Opts.setDebugSimpleTemplateNames( 1740 StringRef(A->getValue()) == "simple" 1741 ? llvm::codegenoptions::DebugTemplateNamesKind::Simple 1742 : llvm::codegenoptions::DebugTemplateNamesKind::Mangled); 1743 } 1744 1745 if (const Arg *A = Args.getLastArg(OPT_ftime_report, OPT_ftime_report_EQ)) { 1746 Opts.TimePasses = true; 1747 1748 // -ftime-report= is only for new pass manager. 1749 if (A->getOption().getID() == OPT_ftime_report_EQ) { 1750 StringRef Val = A->getValue(); 1751 if (Val == "per-pass") 1752 Opts.TimePassesPerRun = false; 1753 else if (Val == "per-pass-run") 1754 Opts.TimePassesPerRun = true; 1755 else 1756 Diags.Report(diag::err_drv_invalid_value) 1757 << A->getAsString(Args) << A->getValue(); 1758 } 1759 } 1760 1761 Opts.PrepareForLTO = false; 1762 Opts.PrepareForThinLTO = false; 1763 if (Arg *A = Args.getLastArg(OPT_flto_EQ)) { 1764 Opts.PrepareForLTO = true; 1765 StringRef S = A->getValue(); 1766 if (S == "thin") 1767 Opts.PrepareForThinLTO = true; 1768 else if (S != "full") 1769 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << S; 1770 if (Args.hasArg(OPT_funified_lto)) 1771 Opts.PrepareForThinLTO = true; 1772 } 1773 if (Arg *A = Args.getLastArg(OPT_fthinlto_index_EQ)) { 1774 if (IK.getLanguage() != Language::LLVM_IR) 1775 Diags.Report(diag::err_drv_argument_only_allowed_with) 1776 << A->getAsString(Args) << "-x ir"; 1777 Opts.ThinLTOIndexFile = 1778 std::string(Args.getLastArgValue(OPT_fthinlto_index_EQ)); 1779 } 1780 if (Arg *A = Args.getLastArg(OPT_save_temps_EQ)) 1781 Opts.SaveTempsFilePrefix = 1782 llvm::StringSwitch<std::string>(A->getValue()) 1783 .Case("obj", OutputFile) 1784 .Default(llvm::sys::path::filename(OutputFile).str()); 1785 1786 // The memory profile runtime appends the pid to make this name more unique. 1787 const char *MemProfileBasename = "memprof.profraw"; 1788 if (Args.hasArg(OPT_fmemory_profile_EQ)) { 1789 SmallString<128> Path( 1790 std::string(Args.getLastArgValue(OPT_fmemory_profile_EQ))); 1791 llvm::sys::path::append(Path, MemProfileBasename); 1792 Opts.MemoryProfileOutput = std::string(Path); 1793 } else if (Args.hasArg(OPT_fmemory_profile)) 1794 Opts.MemoryProfileOutput = MemProfileBasename; 1795 1796 memcpy(Opts.CoverageVersion, "408*", 4); 1797 if (Opts.CoverageNotesFile.size() || Opts.CoverageDataFile.size()) { 1798 if (Args.hasArg(OPT_coverage_version_EQ)) { 1799 StringRef CoverageVersion = Args.getLastArgValue(OPT_coverage_version_EQ); 1800 if (CoverageVersion.size() != 4) { 1801 Diags.Report(diag::err_drv_invalid_value) 1802 << Args.getLastArg(OPT_coverage_version_EQ)->getAsString(Args) 1803 << CoverageVersion; 1804 } else { 1805 memcpy(Opts.CoverageVersion, CoverageVersion.data(), 4); 1806 } 1807 } 1808 } 1809 // FIXME: For backend options that are not yet recorded as function 1810 // attributes in the IR, keep track of them so we can embed them in a 1811 // separate data section and use them when building the bitcode. 1812 for (const auto &A : Args) { 1813 // Do not encode output and input. 1814 if (A->getOption().getID() == options::OPT_o || 1815 A->getOption().getID() == options::OPT_INPUT || 1816 A->getOption().getID() == options::OPT_x || 1817 A->getOption().getID() == options::OPT_fembed_bitcode || 1818 A->getOption().matches(options::OPT_W_Group)) 1819 continue; 1820 ArgStringList ASL; 1821 A->render(Args, ASL); 1822 for (const auto &arg : ASL) { 1823 StringRef ArgStr(arg); 1824 Opts.CmdArgs.insert(Opts.CmdArgs.end(), ArgStr.begin(), ArgStr.end()); 1825 // using \00 to separate each commandline options. 1826 Opts.CmdArgs.push_back('\0'); 1827 } 1828 } 1829 1830 auto XRayInstrBundles = 1831 Args.getAllArgValues(OPT_fxray_instrumentation_bundle); 1832 if (XRayInstrBundles.empty()) 1833 Opts.XRayInstrumentationBundle.Mask = XRayInstrKind::All; 1834 else 1835 for (const auto &A : XRayInstrBundles) 1836 parseXRayInstrumentationBundle("-fxray-instrumentation-bundle=", A, Args, 1837 Diags, Opts.XRayInstrumentationBundle); 1838 1839 if (const Arg *A = Args.getLastArg(OPT_fcf_protection_EQ)) { 1840 StringRef Name = A->getValue(); 1841 if (Name == "full") { 1842 Opts.CFProtectionReturn = 1; 1843 Opts.CFProtectionBranch = 1; 1844 } else if (Name == "return") 1845 Opts.CFProtectionReturn = 1; 1846 else if (Name == "branch") 1847 Opts.CFProtectionBranch = 1; 1848 else if (Name != "none") 1849 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Name; 1850 } 1851 1852 if (const Arg *A = Args.getLastArg(OPT_mfunction_return_EQ)) { 1853 auto Val = llvm::StringSwitch<llvm::FunctionReturnThunksKind>(A->getValue()) 1854 .Case("keep", llvm::FunctionReturnThunksKind::Keep) 1855 .Case("thunk-extern", llvm::FunctionReturnThunksKind::Extern) 1856 .Default(llvm::FunctionReturnThunksKind::Invalid); 1857 // SystemZ might want to add support for "expolines." 1858 if (!T.isX86()) 1859 Diags.Report(diag::err_drv_argument_not_allowed_with) 1860 << A->getSpelling() << T.getTriple(); 1861 else if (Val == llvm::FunctionReturnThunksKind::Invalid) 1862 Diags.Report(diag::err_drv_invalid_value) 1863 << A->getAsString(Args) << A->getValue(); 1864 else if (Val == llvm::FunctionReturnThunksKind::Extern && 1865 Args.getLastArgValue(OPT_mcmodel_EQ).equals("large")) 1866 Diags.Report(diag::err_drv_argument_not_allowed_with) 1867 << A->getAsString(Args) 1868 << Args.getLastArg(OPT_mcmodel_EQ)->getAsString(Args); 1869 else 1870 Opts.FunctionReturnThunks = static_cast<unsigned>(Val); 1871 } 1872 1873 for (auto *A : 1874 Args.filtered(OPT_mlink_bitcode_file, OPT_mlink_builtin_bitcode)) { 1875 CodeGenOptions::BitcodeFileToLink F; 1876 F.Filename = A->getValue(); 1877 if (A->getOption().matches(OPT_mlink_builtin_bitcode)) { 1878 F.LinkFlags = llvm::Linker::Flags::LinkOnlyNeeded; 1879 // When linking CUDA bitcode, propagate function attributes so that 1880 // e.g. libdevice gets fast-math attrs if we're building with fast-math. 1881 F.PropagateAttrs = true; 1882 F.Internalize = true; 1883 } 1884 Opts.LinkBitcodeFiles.push_back(F); 1885 } 1886 1887 if (Arg *A = Args.getLastArg(OPT_ftlsmodel_EQ)) { 1888 if (T.isOSAIX()) { 1889 StringRef Name = A->getValue(); 1890 if (Name != "global-dynamic" && Name != "local-exec") 1891 Diags.Report(diag::err_aix_unsupported_tls_model) << Name; 1892 } 1893 } 1894 1895 if (Arg *A = Args.getLastArg(OPT_fdenormal_fp_math_EQ)) { 1896 StringRef Val = A->getValue(); 1897 Opts.FPDenormalMode = llvm::parseDenormalFPAttribute(Val); 1898 Opts.FP32DenormalMode = Opts.FPDenormalMode; 1899 if (!Opts.FPDenormalMode.isValid()) 1900 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Val; 1901 } 1902 1903 if (Arg *A = Args.getLastArg(OPT_fdenormal_fp_math_f32_EQ)) { 1904 StringRef Val = A->getValue(); 1905 Opts.FP32DenormalMode = llvm::parseDenormalFPAttribute(Val); 1906 if (!Opts.FP32DenormalMode.isValid()) 1907 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Val; 1908 } 1909 1910 // X86_32 has -fppc-struct-return and -freg-struct-return. 1911 // PPC32 has -maix-struct-return and -msvr4-struct-return. 1912 if (Arg *A = 1913 Args.getLastArg(OPT_fpcc_struct_return, OPT_freg_struct_return, 1914 OPT_maix_struct_return, OPT_msvr4_struct_return)) { 1915 // TODO: We might want to consider enabling these options on AIX in the 1916 // future. 1917 if (T.isOSAIX()) 1918 Diags.Report(diag::err_drv_unsupported_opt_for_target) 1919 << A->getSpelling() << T.str(); 1920 1921 const Option &O = A->getOption(); 1922 if (O.matches(OPT_fpcc_struct_return) || 1923 O.matches(OPT_maix_struct_return)) { 1924 Opts.setStructReturnConvention(CodeGenOptions::SRCK_OnStack); 1925 } else { 1926 assert(O.matches(OPT_freg_struct_return) || 1927 O.matches(OPT_msvr4_struct_return)); 1928 Opts.setStructReturnConvention(CodeGenOptions::SRCK_InRegs); 1929 } 1930 } 1931 1932 if (Arg *A = Args.getLastArg(OPT_mxcoff_roptr)) { 1933 if (!T.isOSAIX()) 1934 Diags.Report(diag::err_drv_unsupported_opt_for_target) 1935 << A->getSpelling() << T.str(); 1936 1937 // Since the storage mapping class is specified per csect, 1938 // without using data sections, it is less effective to use read-only 1939 // pointers. Using read-only pointers may cause other RO variables in the 1940 // same csect to become RW when the linker acts upon `-bforceimprw`; 1941 // therefore, we require that separate data sections 1942 // are used when `-mxcoff-roptr` is in effect. We respect the setting of 1943 // data-sections since we have not found reasons to do otherwise that 1944 // overcome the user surprise of not respecting the setting. 1945 if (!Args.hasFlag(OPT_fdata_sections, OPT_fno_data_sections, false)) 1946 Diags.Report(diag::err_roptr_requires_data_sections); 1947 1948 Opts.XCOFFReadOnlyPointers = true; 1949 } 1950 1951 if (Arg *A = Args.getLastArg(OPT_mabi_EQ_quadword_atomics)) { 1952 if (!T.isOSAIX() || T.isPPC32()) 1953 Diags.Report(diag::err_drv_unsupported_opt_for_target) 1954 << A->getSpelling() << T.str(); 1955 } 1956 1957 bool NeedLocTracking = false; 1958 1959 if (!Opts.OptRecordFile.empty()) 1960 NeedLocTracking = true; 1961 1962 if (Arg *A = Args.getLastArg(OPT_opt_record_passes)) { 1963 Opts.OptRecordPasses = A->getValue(); 1964 NeedLocTracking = true; 1965 } 1966 1967 if (Arg *A = Args.getLastArg(OPT_opt_record_format)) { 1968 Opts.OptRecordFormat = A->getValue(); 1969 NeedLocTracking = true; 1970 } 1971 1972 Opts.OptimizationRemark = 1973 ParseOptimizationRemark(Diags, Args, OPT_Rpass_EQ, "pass"); 1974 1975 Opts.OptimizationRemarkMissed = 1976 ParseOptimizationRemark(Diags, Args, OPT_Rpass_missed_EQ, "pass-missed"); 1977 1978 Opts.OptimizationRemarkAnalysis = ParseOptimizationRemark( 1979 Diags, Args, OPT_Rpass_analysis_EQ, "pass-analysis"); 1980 1981 NeedLocTracking |= Opts.OptimizationRemark.hasValidPattern() || 1982 Opts.OptimizationRemarkMissed.hasValidPattern() || 1983 Opts.OptimizationRemarkAnalysis.hasValidPattern(); 1984 1985 bool UsingSampleProfile = !Opts.SampleProfileFile.empty(); 1986 bool UsingProfile = 1987 UsingSampleProfile || !Opts.ProfileInstrumentUsePath.empty(); 1988 1989 if (Opts.DiagnosticsWithHotness && !UsingProfile && 1990 // An IR file will contain PGO as metadata 1991 IK.getLanguage() != Language::LLVM_IR) 1992 Diags.Report(diag::warn_drv_diagnostics_hotness_requires_pgo) 1993 << "-fdiagnostics-show-hotness"; 1994 1995 // Parse remarks hotness threshold. Valid value is either integer or 'auto'. 1996 if (auto *arg = 1997 Args.getLastArg(options::OPT_fdiagnostics_hotness_threshold_EQ)) { 1998 auto ResultOrErr = 1999 llvm::remarks::parseHotnessThresholdOption(arg->getValue()); 2000 2001 if (!ResultOrErr) { 2002 Diags.Report(diag::err_drv_invalid_diagnotics_hotness_threshold) 2003 << "-fdiagnostics-hotness-threshold="; 2004 } else { 2005 Opts.DiagnosticsHotnessThreshold = *ResultOrErr; 2006 if ((!Opts.DiagnosticsHotnessThreshold || 2007 *Opts.DiagnosticsHotnessThreshold > 0) && 2008 !UsingProfile) 2009 Diags.Report(diag::warn_drv_diagnostics_hotness_requires_pgo) 2010 << "-fdiagnostics-hotness-threshold="; 2011 } 2012 } 2013 2014 if (auto *arg = 2015 Args.getLastArg(options::OPT_fdiagnostics_misexpect_tolerance_EQ)) { 2016 auto ResultOrErr = parseToleranceOption(arg->getValue()); 2017 2018 if (!ResultOrErr) { 2019 Diags.Report(diag::err_drv_invalid_diagnotics_misexpect_tolerance) 2020 << "-fdiagnostics-misexpect-tolerance="; 2021 } else { 2022 Opts.DiagnosticsMisExpectTolerance = *ResultOrErr; 2023 if ((!Opts.DiagnosticsMisExpectTolerance || 2024 *Opts.DiagnosticsMisExpectTolerance > 0) && 2025 !UsingProfile) 2026 Diags.Report(diag::warn_drv_diagnostics_misexpect_requires_pgo) 2027 << "-fdiagnostics-misexpect-tolerance="; 2028 } 2029 } 2030 2031 // If the user requested to use a sample profile for PGO, then the 2032 // backend will need to track source location information so the profile 2033 // can be incorporated into the IR. 2034 if (UsingSampleProfile) 2035 NeedLocTracking = true; 2036 2037 if (!Opts.StackUsageOutput.empty()) 2038 NeedLocTracking = true; 2039 2040 // If the user requested a flag that requires source locations available in 2041 // the backend, make sure that the backend tracks source location information. 2042 if (NeedLocTracking && 2043 Opts.getDebugInfo() == llvm::codegenoptions::NoDebugInfo) 2044 Opts.setDebugInfo(llvm::codegenoptions::LocTrackingOnly); 2045 2046 // Parse -fsanitize-recover= arguments. 2047 // FIXME: Report unrecoverable sanitizers incorrectly specified here. 2048 parseSanitizerKinds("-fsanitize-recover=", 2049 Args.getAllArgValues(OPT_fsanitize_recover_EQ), Diags, 2050 Opts.SanitizeRecover); 2051 parseSanitizerKinds("-fsanitize-trap=", 2052 Args.getAllArgValues(OPT_fsanitize_trap_EQ), Diags, 2053 Opts.SanitizeTrap); 2054 2055 Opts.EmitVersionIdentMetadata = Args.hasFlag(OPT_Qy, OPT_Qn, true); 2056 2057 if (Args.hasArg(options::OPT_ffinite_loops)) 2058 Opts.FiniteLoops = CodeGenOptions::FiniteLoopsKind::Always; 2059 else if (Args.hasArg(options::OPT_fno_finite_loops)) 2060 Opts.FiniteLoops = CodeGenOptions::FiniteLoopsKind::Never; 2061 2062 Opts.EmitIEEENaNCompliantInsts = Args.hasFlag( 2063 options::OPT_mamdgpu_ieee, options::OPT_mno_amdgpu_ieee, true); 2064 if (!Opts.EmitIEEENaNCompliantInsts && !LangOptsRef.NoHonorNaNs) 2065 Diags.Report(diag::err_drv_amdgpu_ieee_without_no_honor_nans); 2066 2067 return Diags.getNumErrors() == NumErrorsBefore; 2068 } 2069 2070 static void 2071 GenerateDependencyOutputArgs(const DependencyOutputOptions &Opts, 2072 SmallVectorImpl<const char *> &Args, 2073 CompilerInvocation::StringAllocator SA) { 2074 const DependencyOutputOptions &DependencyOutputOpts = Opts; 2075 #define DEPENDENCY_OUTPUT_OPTION_WITH_MARSHALLING(...) \ 2076 GENERATE_OPTION_WITH_MARSHALLING(Args, SA, __VA_ARGS__) 2077 #include "clang/Driver/Options.inc" 2078 #undef DEPENDENCY_OUTPUT_OPTION_WITH_MARSHALLING 2079 2080 if (Opts.ShowIncludesDest != ShowIncludesDestination::None) 2081 GenerateArg(Args, OPT_show_includes, SA); 2082 2083 for (const auto &Dep : Opts.ExtraDeps) { 2084 switch (Dep.second) { 2085 case EDK_SanitizeIgnorelist: 2086 // Sanitizer ignorelist arguments are generated from LanguageOptions. 2087 continue; 2088 case EDK_ModuleFile: 2089 // Module file arguments are generated from FrontendOptions and 2090 // HeaderSearchOptions. 2091 continue; 2092 case EDK_ProfileList: 2093 // Profile list arguments are generated from LanguageOptions via the 2094 // marshalling infrastructure. 2095 continue; 2096 case EDK_DepFileEntry: 2097 GenerateArg(Args, OPT_fdepfile_entry, Dep.first, SA); 2098 break; 2099 } 2100 } 2101 } 2102 2103 static bool ParseDependencyOutputArgs(DependencyOutputOptions &Opts, 2104 ArgList &Args, DiagnosticsEngine &Diags, 2105 frontend::ActionKind Action, 2106 bool ShowLineMarkers) { 2107 unsigned NumErrorsBefore = Diags.getNumErrors(); 2108 2109 DependencyOutputOptions &DependencyOutputOpts = Opts; 2110 #define DEPENDENCY_OUTPUT_OPTION_WITH_MARSHALLING(...) \ 2111 PARSE_OPTION_WITH_MARSHALLING(Args, Diags, __VA_ARGS__) 2112 #include "clang/Driver/Options.inc" 2113 #undef DEPENDENCY_OUTPUT_OPTION_WITH_MARSHALLING 2114 2115 if (Args.hasArg(OPT_show_includes)) { 2116 // Writing both /showIncludes and preprocessor output to stdout 2117 // would produce interleaved output, so use stderr for /showIncludes. 2118 // This behaves the same as cl.exe, when /E, /EP or /P are passed. 2119 if (Action == frontend::PrintPreprocessedInput || !ShowLineMarkers) 2120 Opts.ShowIncludesDest = ShowIncludesDestination::Stderr; 2121 else 2122 Opts.ShowIncludesDest = ShowIncludesDestination::Stdout; 2123 } else { 2124 Opts.ShowIncludesDest = ShowIncludesDestination::None; 2125 } 2126 2127 // Add sanitizer ignorelists as extra dependencies. 2128 // They won't be discovered by the regular preprocessor, so 2129 // we let make / ninja to know about this implicit dependency. 2130 if (!Args.hasArg(OPT_fno_sanitize_ignorelist)) { 2131 for (const auto *A : Args.filtered(OPT_fsanitize_ignorelist_EQ)) { 2132 StringRef Val = A->getValue(); 2133 if (!Val.contains('=')) 2134 Opts.ExtraDeps.emplace_back(std::string(Val), EDK_SanitizeIgnorelist); 2135 } 2136 if (Opts.IncludeSystemHeaders) { 2137 for (const auto *A : Args.filtered(OPT_fsanitize_system_ignorelist_EQ)) { 2138 StringRef Val = A->getValue(); 2139 if (!Val.contains('=')) 2140 Opts.ExtraDeps.emplace_back(std::string(Val), EDK_SanitizeIgnorelist); 2141 } 2142 } 2143 } 2144 2145 // -fprofile-list= dependencies. 2146 for (const auto &Filename : Args.getAllArgValues(OPT_fprofile_list_EQ)) 2147 Opts.ExtraDeps.emplace_back(Filename, EDK_ProfileList); 2148 2149 // Propagate the extra dependencies. 2150 for (const auto *A : Args.filtered(OPT_fdepfile_entry)) 2151 Opts.ExtraDeps.emplace_back(A->getValue(), EDK_DepFileEntry); 2152 2153 // Only the -fmodule-file=<file> form. 2154 for (const auto *A : Args.filtered(OPT_fmodule_file)) { 2155 StringRef Val = A->getValue(); 2156 if (!Val.contains('=')) 2157 Opts.ExtraDeps.emplace_back(std::string(Val), EDK_ModuleFile); 2158 } 2159 2160 // Check for invalid combinations of header-include-format 2161 // and header-include-filtering. 2162 if ((Opts.HeaderIncludeFormat == HIFMT_Textual && 2163 Opts.HeaderIncludeFiltering != HIFIL_None) || 2164 (Opts.HeaderIncludeFormat == HIFMT_JSON && 2165 Opts.HeaderIncludeFiltering != HIFIL_Only_Direct_System)) 2166 Diags.Report(diag::err_drv_print_header_env_var_combination_cc1) 2167 << Args.getLastArg(OPT_header_include_format_EQ)->getValue() 2168 << Args.getLastArg(OPT_header_include_filtering_EQ)->getValue(); 2169 2170 return Diags.getNumErrors() == NumErrorsBefore; 2171 } 2172 2173 static bool parseShowColorsArgs(const ArgList &Args, bool DefaultColor) { 2174 // Color diagnostics default to auto ("on" if terminal supports) in the driver 2175 // but default to off in cc1, needing an explicit OPT_fdiagnostics_color. 2176 // Support both clang's -f[no-]color-diagnostics and gcc's 2177 // -f[no-]diagnostics-colors[=never|always|auto]. 2178 enum { 2179 Colors_On, 2180 Colors_Off, 2181 Colors_Auto 2182 } ShowColors = DefaultColor ? Colors_Auto : Colors_Off; 2183 for (auto *A : Args) { 2184 const Option &O = A->getOption(); 2185 if (O.matches(options::OPT_fcolor_diagnostics)) { 2186 ShowColors = Colors_On; 2187 } else if (O.matches(options::OPT_fno_color_diagnostics)) { 2188 ShowColors = Colors_Off; 2189 } else if (O.matches(options::OPT_fdiagnostics_color_EQ)) { 2190 StringRef Value(A->getValue()); 2191 if (Value == "always") 2192 ShowColors = Colors_On; 2193 else if (Value == "never") 2194 ShowColors = Colors_Off; 2195 else if (Value == "auto") 2196 ShowColors = Colors_Auto; 2197 } 2198 } 2199 return ShowColors == Colors_On || 2200 (ShowColors == Colors_Auto && 2201 llvm::sys::Process::StandardErrHasColors()); 2202 } 2203 2204 static bool checkVerifyPrefixes(const std::vector<std::string> &VerifyPrefixes, 2205 DiagnosticsEngine &Diags) { 2206 bool Success = true; 2207 for (const auto &Prefix : VerifyPrefixes) { 2208 // Every prefix must start with a letter and contain only alphanumeric 2209 // characters, hyphens, and underscores. 2210 auto BadChar = llvm::find_if(Prefix, [](char C) { 2211 return !isAlphanumeric(C) && C != '-' && C != '_'; 2212 }); 2213 if (BadChar != Prefix.end() || !isLetter(Prefix[0])) { 2214 Success = false; 2215 Diags.Report(diag::err_drv_invalid_value) << "-verify=" << Prefix; 2216 Diags.Report(diag::note_drv_verify_prefix_spelling); 2217 } 2218 } 2219 return Success; 2220 } 2221 2222 static void GenerateFileSystemArgs(const FileSystemOptions &Opts, 2223 SmallVectorImpl<const char *> &Args, 2224 CompilerInvocation::StringAllocator SA) { 2225 const FileSystemOptions &FileSystemOpts = Opts; 2226 2227 #define FILE_SYSTEM_OPTION_WITH_MARSHALLING(...) \ 2228 GENERATE_OPTION_WITH_MARSHALLING(Args, SA, __VA_ARGS__) 2229 #include "clang/Driver/Options.inc" 2230 #undef FILE_SYSTEM_OPTION_WITH_MARSHALLING 2231 } 2232 2233 static bool ParseFileSystemArgs(FileSystemOptions &Opts, const ArgList &Args, 2234 DiagnosticsEngine &Diags) { 2235 unsigned NumErrorsBefore = Diags.getNumErrors(); 2236 2237 FileSystemOptions &FileSystemOpts = Opts; 2238 2239 #define FILE_SYSTEM_OPTION_WITH_MARSHALLING(...) \ 2240 PARSE_OPTION_WITH_MARSHALLING(Args, Diags, __VA_ARGS__) 2241 #include "clang/Driver/Options.inc" 2242 #undef FILE_SYSTEM_OPTION_WITH_MARSHALLING 2243 2244 return Diags.getNumErrors() == NumErrorsBefore; 2245 } 2246 2247 static void GenerateMigratorArgs(const MigratorOptions &Opts, 2248 SmallVectorImpl<const char *> &Args, 2249 CompilerInvocation::StringAllocator SA) { 2250 const MigratorOptions &MigratorOpts = Opts; 2251 #define MIGRATOR_OPTION_WITH_MARSHALLING(...) \ 2252 GENERATE_OPTION_WITH_MARSHALLING(Args, SA, __VA_ARGS__) 2253 #include "clang/Driver/Options.inc" 2254 #undef MIGRATOR_OPTION_WITH_MARSHALLING 2255 } 2256 2257 static bool ParseMigratorArgs(MigratorOptions &Opts, const ArgList &Args, 2258 DiagnosticsEngine &Diags) { 2259 unsigned NumErrorsBefore = Diags.getNumErrors(); 2260 2261 MigratorOptions &MigratorOpts = Opts; 2262 2263 #define MIGRATOR_OPTION_WITH_MARSHALLING(...) \ 2264 PARSE_OPTION_WITH_MARSHALLING(Args, Diags, __VA_ARGS__) 2265 #include "clang/Driver/Options.inc" 2266 #undef MIGRATOR_OPTION_WITH_MARSHALLING 2267 2268 return Diags.getNumErrors() == NumErrorsBefore; 2269 } 2270 2271 void CompilerInvocation::GenerateDiagnosticArgs( 2272 const DiagnosticOptions &Opts, SmallVectorImpl<const char *> &Args, 2273 StringAllocator SA, bool DefaultDiagColor) { 2274 const DiagnosticOptions *DiagnosticOpts = &Opts; 2275 #define DIAG_OPTION_WITH_MARSHALLING(...) \ 2276 GENERATE_OPTION_WITH_MARSHALLING(Args, SA, __VA_ARGS__) 2277 #include "clang/Driver/Options.inc" 2278 #undef DIAG_OPTION_WITH_MARSHALLING 2279 2280 if (!Opts.DiagnosticSerializationFile.empty()) 2281 GenerateArg(Args, OPT_diagnostic_serialized_file, 2282 Opts.DiagnosticSerializationFile, SA); 2283 2284 if (Opts.ShowColors) 2285 GenerateArg(Args, OPT_fcolor_diagnostics, SA); 2286 2287 if (Opts.VerifyDiagnostics && 2288 llvm::is_contained(Opts.VerifyPrefixes, "expected")) 2289 GenerateArg(Args, OPT_verify, SA); 2290 2291 for (const auto &Prefix : Opts.VerifyPrefixes) 2292 if (Prefix != "expected") 2293 GenerateArg(Args, OPT_verify_EQ, Prefix, SA); 2294 2295 DiagnosticLevelMask VIU = Opts.getVerifyIgnoreUnexpected(); 2296 if (VIU == DiagnosticLevelMask::None) { 2297 // This is the default, don't generate anything. 2298 } else if (VIU == DiagnosticLevelMask::All) { 2299 GenerateArg(Args, OPT_verify_ignore_unexpected, SA); 2300 } else { 2301 if (static_cast<unsigned>(VIU & DiagnosticLevelMask::Note) != 0) 2302 GenerateArg(Args, OPT_verify_ignore_unexpected_EQ, "note", SA); 2303 if (static_cast<unsigned>(VIU & DiagnosticLevelMask::Remark) != 0) 2304 GenerateArg(Args, OPT_verify_ignore_unexpected_EQ, "remark", SA); 2305 if (static_cast<unsigned>(VIU & DiagnosticLevelMask::Warning) != 0) 2306 GenerateArg(Args, OPT_verify_ignore_unexpected_EQ, "warning", SA); 2307 if (static_cast<unsigned>(VIU & DiagnosticLevelMask::Error) != 0) 2308 GenerateArg(Args, OPT_verify_ignore_unexpected_EQ, "error", SA); 2309 } 2310 2311 for (const auto &Warning : Opts.Warnings) { 2312 // This option is automatically generated from UndefPrefixes. 2313 if (Warning == "undef-prefix") 2314 continue; 2315 Args.push_back(SA(StringRef("-W") + Warning)); 2316 } 2317 2318 for (const auto &Remark : Opts.Remarks) { 2319 // These arguments are generated from OptimizationRemark fields of 2320 // CodeGenOptions. 2321 StringRef IgnoredRemarks[] = {"pass", "no-pass", 2322 "pass-analysis", "no-pass-analysis", 2323 "pass-missed", "no-pass-missed"}; 2324 if (llvm::is_contained(IgnoredRemarks, Remark)) 2325 continue; 2326 2327 Args.push_back(SA(StringRef("-R") + Remark)); 2328 } 2329 } 2330 2331 std::unique_ptr<DiagnosticOptions> 2332 clang::CreateAndPopulateDiagOpts(ArrayRef<const char *> Argv) { 2333 auto DiagOpts = std::make_unique<DiagnosticOptions>(); 2334 unsigned MissingArgIndex, MissingArgCount; 2335 InputArgList Args = getDriverOptTable().ParseArgs( 2336 Argv.slice(1), MissingArgIndex, MissingArgCount); 2337 2338 bool ShowColors = true; 2339 if (std::optional<std::string> NoColor = 2340 llvm::sys::Process::GetEnv("NO_COLOR"); 2341 NoColor && !NoColor->empty()) { 2342 // If the user set the NO_COLOR environment variable, we'll honor that 2343 // unless the command line overrides it. 2344 ShowColors = false; 2345 } 2346 2347 // We ignore MissingArgCount and the return value of ParseDiagnosticArgs. 2348 // Any errors that would be diagnosed here will also be diagnosed later, 2349 // when the DiagnosticsEngine actually exists. 2350 (void)ParseDiagnosticArgs(*DiagOpts, Args, /*Diags=*/nullptr, ShowColors); 2351 return DiagOpts; 2352 } 2353 2354 bool clang::ParseDiagnosticArgs(DiagnosticOptions &Opts, ArgList &Args, 2355 DiagnosticsEngine *Diags, 2356 bool DefaultDiagColor) { 2357 std::optional<DiagnosticsEngine> IgnoringDiags; 2358 if (!Diags) { 2359 IgnoringDiags.emplace(new DiagnosticIDs(), new DiagnosticOptions(), 2360 new IgnoringDiagConsumer()); 2361 Diags = &*IgnoringDiags; 2362 } 2363 2364 unsigned NumErrorsBefore = Diags->getNumErrors(); 2365 2366 // The key paths of diagnostic options defined in Options.td start with 2367 // "DiagnosticOpts->". Let's provide the expected variable name and type. 2368 DiagnosticOptions *DiagnosticOpts = &Opts; 2369 2370 #define DIAG_OPTION_WITH_MARSHALLING(...) \ 2371 PARSE_OPTION_WITH_MARSHALLING(Args, *Diags, __VA_ARGS__) 2372 #include "clang/Driver/Options.inc" 2373 #undef DIAG_OPTION_WITH_MARSHALLING 2374 2375 llvm::sys::Process::UseANSIEscapeCodes(Opts.UseANSIEscapeCodes); 2376 2377 if (Arg *A = 2378 Args.getLastArg(OPT_diagnostic_serialized_file, OPT__serialize_diags)) 2379 Opts.DiagnosticSerializationFile = A->getValue(); 2380 Opts.ShowColors = parseShowColorsArgs(Args, DefaultDiagColor); 2381 2382 Opts.VerifyDiagnostics = Args.hasArg(OPT_verify) || Args.hasArg(OPT_verify_EQ); 2383 Opts.VerifyPrefixes = Args.getAllArgValues(OPT_verify_EQ); 2384 if (Args.hasArg(OPT_verify)) 2385 Opts.VerifyPrefixes.push_back("expected"); 2386 // Keep VerifyPrefixes in its original order for the sake of diagnostics, and 2387 // then sort it to prepare for fast lookup using std::binary_search. 2388 if (!checkVerifyPrefixes(Opts.VerifyPrefixes, *Diags)) 2389 Opts.VerifyDiagnostics = false; 2390 else 2391 llvm::sort(Opts.VerifyPrefixes); 2392 DiagnosticLevelMask DiagMask = DiagnosticLevelMask::None; 2393 parseDiagnosticLevelMask( 2394 "-verify-ignore-unexpected=", 2395 Args.getAllArgValues(OPT_verify_ignore_unexpected_EQ), *Diags, DiagMask); 2396 if (Args.hasArg(OPT_verify_ignore_unexpected)) 2397 DiagMask = DiagnosticLevelMask::All; 2398 Opts.setVerifyIgnoreUnexpected(DiagMask); 2399 if (Opts.TabStop == 0 || Opts.TabStop > DiagnosticOptions::MaxTabStop) { 2400 Diags->Report(diag::warn_ignoring_ftabstop_value) 2401 << Opts.TabStop << DiagnosticOptions::DefaultTabStop; 2402 Opts.TabStop = DiagnosticOptions::DefaultTabStop; 2403 } 2404 2405 addDiagnosticArgs(Args, OPT_W_Group, OPT_W_value_Group, Opts.Warnings); 2406 addDiagnosticArgs(Args, OPT_R_Group, OPT_R_value_Group, Opts.Remarks); 2407 2408 return Diags->getNumErrors() == NumErrorsBefore; 2409 } 2410 2411 /// Parse the argument to the -ftest-module-file-extension 2412 /// command-line argument. 2413 /// 2414 /// \returns true on error, false on success. 2415 static bool parseTestModuleFileExtensionArg(StringRef Arg, 2416 std::string &BlockName, 2417 unsigned &MajorVersion, 2418 unsigned &MinorVersion, 2419 bool &Hashed, 2420 std::string &UserInfo) { 2421 SmallVector<StringRef, 5> Args; 2422 Arg.split(Args, ':', 5); 2423 if (Args.size() < 5) 2424 return true; 2425 2426 BlockName = std::string(Args[0]); 2427 if (Args[1].getAsInteger(10, MajorVersion)) return true; 2428 if (Args[2].getAsInteger(10, MinorVersion)) return true; 2429 if (Args[3].getAsInteger(2, Hashed)) return true; 2430 if (Args.size() > 4) 2431 UserInfo = std::string(Args[4]); 2432 return false; 2433 } 2434 2435 /// Return a table that associates command line option specifiers with the 2436 /// frontend action. Note: The pair {frontend::PluginAction, OPT_plugin} is 2437 /// intentionally missing, as this case is handled separately from other 2438 /// frontend options. 2439 static const auto &getFrontendActionTable() { 2440 static const std::pair<frontend::ActionKind, unsigned> Table[] = { 2441 {frontend::ASTDeclList, OPT_ast_list}, 2442 2443 {frontend::ASTDump, OPT_ast_dump_all_EQ}, 2444 {frontend::ASTDump, OPT_ast_dump_all}, 2445 {frontend::ASTDump, OPT_ast_dump_EQ}, 2446 {frontend::ASTDump, OPT_ast_dump}, 2447 {frontend::ASTDump, OPT_ast_dump_lookups}, 2448 {frontend::ASTDump, OPT_ast_dump_decl_types}, 2449 2450 {frontend::ASTPrint, OPT_ast_print}, 2451 {frontend::ASTView, OPT_ast_view}, 2452 {frontend::DumpCompilerOptions, OPT_compiler_options_dump}, 2453 {frontend::DumpRawTokens, OPT_dump_raw_tokens}, 2454 {frontend::DumpTokens, OPT_dump_tokens}, 2455 {frontend::EmitAssembly, OPT_S}, 2456 {frontend::EmitBC, OPT_emit_llvm_bc}, 2457 {frontend::EmitHTML, OPT_emit_html}, 2458 {frontend::EmitLLVM, OPT_emit_llvm}, 2459 {frontend::EmitLLVMOnly, OPT_emit_llvm_only}, 2460 {frontend::EmitCodeGenOnly, OPT_emit_codegen_only}, 2461 {frontend::EmitObj, OPT_emit_obj}, 2462 {frontend::ExtractAPI, OPT_extract_api}, 2463 2464 {frontend::FixIt, OPT_fixit_EQ}, 2465 {frontend::FixIt, OPT_fixit}, 2466 2467 {frontend::GenerateModule, OPT_emit_module}, 2468 {frontend::GenerateModuleInterface, OPT_emit_module_interface}, 2469 {frontend::GenerateHeaderUnit, OPT_emit_header_unit}, 2470 {frontend::GeneratePCH, OPT_emit_pch}, 2471 {frontend::GenerateInterfaceStubs, OPT_emit_interface_stubs}, 2472 {frontend::InitOnly, OPT_init_only}, 2473 {frontend::ParseSyntaxOnly, OPT_fsyntax_only}, 2474 {frontend::ModuleFileInfo, OPT_module_file_info}, 2475 {frontend::VerifyPCH, OPT_verify_pch}, 2476 {frontend::PrintPreamble, OPT_print_preamble}, 2477 {frontend::PrintPreprocessedInput, OPT_E}, 2478 {frontend::TemplightDump, OPT_templight_dump}, 2479 {frontend::RewriteMacros, OPT_rewrite_macros}, 2480 {frontend::RewriteObjC, OPT_rewrite_objc}, 2481 {frontend::RewriteTest, OPT_rewrite_test}, 2482 {frontend::RunAnalysis, OPT_analyze}, 2483 {frontend::MigrateSource, OPT_migrate}, 2484 {frontend::RunPreprocessorOnly, OPT_Eonly}, 2485 {frontend::PrintDependencyDirectivesSourceMinimizerOutput, 2486 OPT_print_dependency_directives_minimized_source}, 2487 }; 2488 2489 return Table; 2490 } 2491 2492 /// Maps command line option to frontend action. 2493 static std::optional<frontend::ActionKind> 2494 getFrontendAction(OptSpecifier &Opt) { 2495 for (const auto &ActionOpt : getFrontendActionTable()) 2496 if (ActionOpt.second == Opt.getID()) 2497 return ActionOpt.first; 2498 2499 return std::nullopt; 2500 } 2501 2502 /// Maps frontend action to command line option. 2503 static std::optional<OptSpecifier> 2504 getProgramActionOpt(frontend::ActionKind ProgramAction) { 2505 for (const auto &ActionOpt : getFrontendActionTable()) 2506 if (ActionOpt.first == ProgramAction) 2507 return OptSpecifier(ActionOpt.second); 2508 2509 return std::nullopt; 2510 } 2511 2512 static void GenerateFrontendArgs(const FrontendOptions &Opts, 2513 SmallVectorImpl<const char *> &Args, 2514 CompilerInvocation::StringAllocator SA, 2515 bool IsHeader) { 2516 const FrontendOptions &FrontendOpts = Opts; 2517 #define FRONTEND_OPTION_WITH_MARSHALLING(...) \ 2518 GENERATE_OPTION_WITH_MARSHALLING(Args, SA, __VA_ARGS__) 2519 #include "clang/Driver/Options.inc" 2520 #undef FRONTEND_OPTION_WITH_MARSHALLING 2521 2522 std::optional<OptSpecifier> ProgramActionOpt = 2523 getProgramActionOpt(Opts.ProgramAction); 2524 2525 // Generating a simple flag covers most frontend actions. 2526 std::function<void()> GenerateProgramAction = [&]() { 2527 GenerateArg(Args, *ProgramActionOpt, SA); 2528 }; 2529 2530 if (!ProgramActionOpt) { 2531 // PluginAction is the only program action handled separately. 2532 assert(Opts.ProgramAction == frontend::PluginAction && 2533 "Frontend action without option."); 2534 GenerateProgramAction = [&]() { 2535 GenerateArg(Args, OPT_plugin, Opts.ActionName, SA); 2536 }; 2537 } 2538 2539 // FIXME: Simplify the complex 'AST dump' command line. 2540 if (Opts.ProgramAction == frontend::ASTDump) { 2541 GenerateProgramAction = [&]() { 2542 // ASTDumpLookups, ASTDumpDeclTypes and ASTDumpFilter are generated via 2543 // marshalling infrastructure. 2544 2545 if (Opts.ASTDumpFormat != ADOF_Default) { 2546 StringRef Format; 2547 switch (Opts.ASTDumpFormat) { 2548 case ADOF_Default: 2549 llvm_unreachable("Default AST dump format."); 2550 case ADOF_JSON: 2551 Format = "json"; 2552 break; 2553 } 2554 2555 if (Opts.ASTDumpAll) 2556 GenerateArg(Args, OPT_ast_dump_all_EQ, Format, SA); 2557 if (Opts.ASTDumpDecls) 2558 GenerateArg(Args, OPT_ast_dump_EQ, Format, SA); 2559 } else { 2560 if (Opts.ASTDumpAll) 2561 GenerateArg(Args, OPT_ast_dump_all, SA); 2562 if (Opts.ASTDumpDecls) 2563 GenerateArg(Args, OPT_ast_dump, SA); 2564 } 2565 }; 2566 } 2567 2568 if (Opts.ProgramAction == frontend::FixIt && !Opts.FixItSuffix.empty()) { 2569 GenerateProgramAction = [&]() { 2570 GenerateArg(Args, OPT_fixit_EQ, Opts.FixItSuffix, SA); 2571 }; 2572 } 2573 2574 GenerateProgramAction(); 2575 2576 for (const auto &PluginArgs : Opts.PluginArgs) { 2577 Option Opt = getDriverOptTable().getOption(OPT_plugin_arg); 2578 const char *Spelling = 2579 SA(Opt.getPrefix() + Opt.getName() + PluginArgs.first); 2580 for (const auto &PluginArg : PluginArgs.second) 2581 denormalizeString(Args, Spelling, SA, Opt.getKind(), 0, PluginArg); 2582 } 2583 2584 for (const auto &Ext : Opts.ModuleFileExtensions) 2585 if (auto *TestExt = dyn_cast_or_null<TestModuleFileExtension>(Ext.get())) 2586 GenerateArg(Args, OPT_ftest_module_file_extension_EQ, TestExt->str(), SA); 2587 2588 if (!Opts.CodeCompletionAt.FileName.empty()) 2589 GenerateArg(Args, OPT_code_completion_at, Opts.CodeCompletionAt.ToString(), 2590 SA); 2591 2592 for (const auto &Plugin : Opts.Plugins) 2593 GenerateArg(Args, OPT_load, Plugin, SA); 2594 2595 // ASTDumpDecls and ASTDumpAll already handled with ProgramAction. 2596 2597 for (const auto &ModuleFile : Opts.ModuleFiles) 2598 GenerateArg(Args, OPT_fmodule_file, ModuleFile, SA); 2599 2600 if (Opts.AuxTargetCPU) 2601 GenerateArg(Args, OPT_aux_target_cpu, *Opts.AuxTargetCPU, SA); 2602 2603 if (Opts.AuxTargetFeatures) 2604 for (const auto &Feature : *Opts.AuxTargetFeatures) 2605 GenerateArg(Args, OPT_aux_target_feature, Feature, SA); 2606 2607 { 2608 StringRef Preprocessed = Opts.DashX.isPreprocessed() ? "-cpp-output" : ""; 2609 StringRef ModuleMap = 2610 Opts.DashX.getFormat() == InputKind::ModuleMap ? "-module-map" : ""; 2611 StringRef HeaderUnit = ""; 2612 switch (Opts.DashX.getHeaderUnitKind()) { 2613 case InputKind::HeaderUnit_None: 2614 break; 2615 case InputKind::HeaderUnit_User: 2616 HeaderUnit = "-user"; 2617 break; 2618 case InputKind::HeaderUnit_System: 2619 HeaderUnit = "-system"; 2620 break; 2621 case InputKind::HeaderUnit_Abs: 2622 HeaderUnit = "-header-unit"; 2623 break; 2624 } 2625 StringRef Header = IsHeader ? "-header" : ""; 2626 2627 StringRef Lang; 2628 switch (Opts.DashX.getLanguage()) { 2629 case Language::C: 2630 Lang = "c"; 2631 break; 2632 case Language::OpenCL: 2633 Lang = "cl"; 2634 break; 2635 case Language::OpenCLCXX: 2636 Lang = "clcpp"; 2637 break; 2638 case Language::CUDA: 2639 Lang = "cuda"; 2640 break; 2641 case Language::HIP: 2642 Lang = "hip"; 2643 break; 2644 case Language::CXX: 2645 Lang = "c++"; 2646 break; 2647 case Language::ObjC: 2648 Lang = "objective-c"; 2649 break; 2650 case Language::ObjCXX: 2651 Lang = "objective-c++"; 2652 break; 2653 case Language::RenderScript: 2654 Lang = "renderscript"; 2655 break; 2656 case Language::Asm: 2657 Lang = "assembler-with-cpp"; 2658 break; 2659 case Language::Unknown: 2660 assert(Opts.DashX.getFormat() == InputKind::Precompiled && 2661 "Generating -x argument for unknown language (not precompiled)."); 2662 Lang = "ast"; 2663 break; 2664 case Language::LLVM_IR: 2665 Lang = "ir"; 2666 break; 2667 case Language::HLSL: 2668 Lang = "hlsl"; 2669 break; 2670 } 2671 2672 GenerateArg(Args, OPT_x, 2673 Lang + HeaderUnit + Header + ModuleMap + Preprocessed, SA); 2674 } 2675 2676 // OPT_INPUT has a unique class, generate it directly. 2677 for (const auto &Input : Opts.Inputs) 2678 Args.push_back(SA(Input.getFile())); 2679 } 2680 2681 static bool ParseFrontendArgs(FrontendOptions &Opts, ArgList &Args, 2682 DiagnosticsEngine &Diags, bool &IsHeaderFile) { 2683 unsigned NumErrorsBefore = Diags.getNumErrors(); 2684 2685 FrontendOptions &FrontendOpts = Opts; 2686 2687 #define FRONTEND_OPTION_WITH_MARSHALLING(...) \ 2688 PARSE_OPTION_WITH_MARSHALLING(Args, Diags, __VA_ARGS__) 2689 #include "clang/Driver/Options.inc" 2690 #undef FRONTEND_OPTION_WITH_MARSHALLING 2691 2692 Opts.ProgramAction = frontend::ParseSyntaxOnly; 2693 if (const Arg *A = Args.getLastArg(OPT_Action_Group)) { 2694 OptSpecifier Opt = OptSpecifier(A->getOption().getID()); 2695 std::optional<frontend::ActionKind> ProgramAction = getFrontendAction(Opt); 2696 assert(ProgramAction && "Option specifier not in Action_Group."); 2697 2698 if (ProgramAction == frontend::ASTDump && 2699 (Opt == OPT_ast_dump_all_EQ || Opt == OPT_ast_dump_EQ)) { 2700 unsigned Val = llvm::StringSwitch<unsigned>(A->getValue()) 2701 .CaseLower("default", ADOF_Default) 2702 .CaseLower("json", ADOF_JSON) 2703 .Default(std::numeric_limits<unsigned>::max()); 2704 2705 if (Val != std::numeric_limits<unsigned>::max()) 2706 Opts.ASTDumpFormat = static_cast<ASTDumpOutputFormat>(Val); 2707 else { 2708 Diags.Report(diag::err_drv_invalid_value) 2709 << A->getAsString(Args) << A->getValue(); 2710 Opts.ASTDumpFormat = ADOF_Default; 2711 } 2712 } 2713 2714 if (ProgramAction == frontend::FixIt && Opt == OPT_fixit_EQ) 2715 Opts.FixItSuffix = A->getValue(); 2716 2717 if (ProgramAction == frontend::GenerateInterfaceStubs) { 2718 StringRef ArgStr = 2719 Args.hasArg(OPT_interface_stub_version_EQ) 2720 ? Args.getLastArgValue(OPT_interface_stub_version_EQ) 2721 : "ifs-v1"; 2722 if (ArgStr == "experimental-yaml-elf-v1" || 2723 ArgStr == "experimental-ifs-v1" || ArgStr == "experimental-ifs-v2" || 2724 ArgStr == "experimental-tapi-elf-v1") { 2725 std::string ErrorMessage = 2726 "Invalid interface stub format: " + ArgStr.str() + 2727 " is deprecated."; 2728 Diags.Report(diag::err_drv_invalid_value) 2729 << "Must specify a valid interface stub format type, ie: " 2730 "-interface-stub-version=ifs-v1" 2731 << ErrorMessage; 2732 ProgramAction = frontend::ParseSyntaxOnly; 2733 } else if (!ArgStr.startswith("ifs-")) { 2734 std::string ErrorMessage = 2735 "Invalid interface stub format: " + ArgStr.str() + "."; 2736 Diags.Report(diag::err_drv_invalid_value) 2737 << "Must specify a valid interface stub format type, ie: " 2738 "-interface-stub-version=ifs-v1" 2739 << ErrorMessage; 2740 ProgramAction = frontend::ParseSyntaxOnly; 2741 } 2742 } 2743 2744 Opts.ProgramAction = *ProgramAction; 2745 } 2746 2747 if (const Arg* A = Args.getLastArg(OPT_plugin)) { 2748 Opts.Plugins.emplace_back(A->getValue(0)); 2749 Opts.ProgramAction = frontend::PluginAction; 2750 Opts.ActionName = A->getValue(); 2751 } 2752 for (const auto *AA : Args.filtered(OPT_plugin_arg)) 2753 Opts.PluginArgs[AA->getValue(0)].emplace_back(AA->getValue(1)); 2754 2755 for (const std::string &Arg : 2756 Args.getAllArgValues(OPT_ftest_module_file_extension_EQ)) { 2757 std::string BlockName; 2758 unsigned MajorVersion; 2759 unsigned MinorVersion; 2760 bool Hashed; 2761 std::string UserInfo; 2762 if (parseTestModuleFileExtensionArg(Arg, BlockName, MajorVersion, 2763 MinorVersion, Hashed, UserInfo)) { 2764 Diags.Report(diag::err_test_module_file_extension_format) << Arg; 2765 2766 continue; 2767 } 2768 2769 // Add the testing module file extension. 2770 Opts.ModuleFileExtensions.push_back( 2771 std::make_shared<TestModuleFileExtension>( 2772 BlockName, MajorVersion, MinorVersion, Hashed, UserInfo)); 2773 } 2774 2775 if (const Arg *A = Args.getLastArg(OPT_code_completion_at)) { 2776 Opts.CodeCompletionAt = 2777 ParsedSourceLocation::FromString(A->getValue()); 2778 if (Opts.CodeCompletionAt.FileName.empty()) 2779 Diags.Report(diag::err_drv_invalid_value) 2780 << A->getAsString(Args) << A->getValue(); 2781 } 2782 2783 Opts.Plugins = Args.getAllArgValues(OPT_load); 2784 Opts.ASTDumpDecls = Args.hasArg(OPT_ast_dump, OPT_ast_dump_EQ); 2785 Opts.ASTDumpAll = Args.hasArg(OPT_ast_dump_all, OPT_ast_dump_all_EQ); 2786 // Only the -fmodule-file=<file> form. 2787 for (const auto *A : Args.filtered(OPT_fmodule_file)) { 2788 StringRef Val = A->getValue(); 2789 if (!Val.contains('=')) 2790 Opts.ModuleFiles.push_back(std::string(Val)); 2791 } 2792 2793 if (Opts.ProgramAction != frontend::GenerateModule && Opts.IsSystemModule) 2794 Diags.Report(diag::err_drv_argument_only_allowed_with) << "-fsystem-module" 2795 << "-emit-module"; 2796 2797 if (Args.hasArg(OPT_aux_target_cpu)) 2798 Opts.AuxTargetCPU = std::string(Args.getLastArgValue(OPT_aux_target_cpu)); 2799 if (Args.hasArg(OPT_aux_target_feature)) 2800 Opts.AuxTargetFeatures = Args.getAllArgValues(OPT_aux_target_feature); 2801 2802 if (Opts.ARCMTAction != FrontendOptions::ARCMT_None && 2803 Opts.ObjCMTAction != FrontendOptions::ObjCMT_None) { 2804 Diags.Report(diag::err_drv_argument_not_allowed_with) 2805 << "ARC migration" << "ObjC migration"; 2806 } 2807 2808 InputKind DashX(Language::Unknown); 2809 if (const Arg *A = Args.getLastArg(OPT_x)) { 2810 StringRef XValue = A->getValue(); 2811 2812 // Parse suffixes: 2813 // '<lang>(-[{header-unit,user,system}-]header|[-module-map][-cpp-output])'. 2814 // FIXME: Supporting '<lang>-header-cpp-output' would be useful. 2815 bool Preprocessed = XValue.consume_back("-cpp-output"); 2816 bool ModuleMap = XValue.consume_back("-module-map"); 2817 // Detect and consume the header indicator. 2818 bool IsHeader = 2819 XValue != "precompiled-header" && XValue.consume_back("-header"); 2820 2821 // If we have c++-{user,system}-header, that indicates a header unit input 2822 // likewise, if the user put -fmodule-header together with a header with an 2823 // absolute path (header-unit-header). 2824 InputKind::HeaderUnitKind HUK = InputKind::HeaderUnit_None; 2825 if (IsHeader || Preprocessed) { 2826 if (XValue.consume_back("-header-unit")) 2827 HUK = InputKind::HeaderUnit_Abs; 2828 else if (XValue.consume_back("-system")) 2829 HUK = InputKind::HeaderUnit_System; 2830 else if (XValue.consume_back("-user")) 2831 HUK = InputKind::HeaderUnit_User; 2832 } 2833 2834 // The value set by this processing is an un-preprocessed source which is 2835 // not intended to be a module map or header unit. 2836 IsHeaderFile = IsHeader && !Preprocessed && !ModuleMap && 2837 HUK == InputKind::HeaderUnit_None; 2838 2839 // Principal languages. 2840 DashX = llvm::StringSwitch<InputKind>(XValue) 2841 .Case("c", Language::C) 2842 .Case("cl", Language::OpenCL) 2843 .Case("clcpp", Language::OpenCLCXX) 2844 .Case("cuda", Language::CUDA) 2845 .Case("hip", Language::HIP) 2846 .Case("c++", Language::CXX) 2847 .Case("objective-c", Language::ObjC) 2848 .Case("objective-c++", Language::ObjCXX) 2849 .Case("renderscript", Language::RenderScript) 2850 .Case("hlsl", Language::HLSL) 2851 .Default(Language::Unknown); 2852 2853 // "objc[++]-cpp-output" is an acceptable synonym for 2854 // "objective-c[++]-cpp-output". 2855 if (DashX.isUnknown() && Preprocessed && !IsHeaderFile && !ModuleMap && 2856 HUK == InputKind::HeaderUnit_None) 2857 DashX = llvm::StringSwitch<InputKind>(XValue) 2858 .Case("objc", Language::ObjC) 2859 .Case("objc++", Language::ObjCXX) 2860 .Default(Language::Unknown); 2861 2862 // Some special cases cannot be combined with suffixes. 2863 if (DashX.isUnknown() && !Preprocessed && !IsHeaderFile && !ModuleMap && 2864 HUK == InputKind::HeaderUnit_None) 2865 DashX = llvm::StringSwitch<InputKind>(XValue) 2866 .Case("cpp-output", InputKind(Language::C).getPreprocessed()) 2867 .Case("assembler-with-cpp", Language::Asm) 2868 .Cases("ast", "pcm", "precompiled-header", 2869 InputKind(Language::Unknown, InputKind::Precompiled)) 2870 .Case("ir", Language::LLVM_IR) 2871 .Default(Language::Unknown); 2872 2873 if (DashX.isUnknown()) 2874 Diags.Report(diag::err_drv_invalid_value) 2875 << A->getAsString(Args) << A->getValue(); 2876 2877 if (Preprocessed) 2878 DashX = DashX.getPreprocessed(); 2879 // A regular header is considered mutually exclusive with a header unit. 2880 if (HUK != InputKind::HeaderUnit_None) { 2881 DashX = DashX.withHeaderUnit(HUK); 2882 IsHeaderFile = true; 2883 } else if (IsHeaderFile) 2884 DashX = DashX.getHeader(); 2885 if (ModuleMap) 2886 DashX = DashX.withFormat(InputKind::ModuleMap); 2887 } 2888 2889 // '-' is the default input if none is given. 2890 std::vector<std::string> Inputs = Args.getAllArgValues(OPT_INPUT); 2891 Opts.Inputs.clear(); 2892 if (Inputs.empty()) 2893 Inputs.push_back("-"); 2894 2895 if (DashX.getHeaderUnitKind() != InputKind::HeaderUnit_None && 2896 Inputs.size() > 1) 2897 Diags.Report(diag::err_drv_header_unit_extra_inputs) << Inputs[1]; 2898 2899 for (unsigned i = 0, e = Inputs.size(); i != e; ++i) { 2900 InputKind IK = DashX; 2901 if (IK.isUnknown()) { 2902 IK = FrontendOptions::getInputKindForExtension( 2903 StringRef(Inputs[i]).rsplit('.').second); 2904 // FIXME: Warn on this? 2905 if (IK.isUnknown()) 2906 IK = Language::C; 2907 // FIXME: Remove this hack. 2908 if (i == 0) 2909 DashX = IK; 2910 } 2911 2912 bool IsSystem = false; 2913 2914 // The -emit-module action implicitly takes a module map. 2915 if (Opts.ProgramAction == frontend::GenerateModule && 2916 IK.getFormat() == InputKind::Source) { 2917 IK = IK.withFormat(InputKind::ModuleMap); 2918 IsSystem = Opts.IsSystemModule; 2919 } 2920 2921 Opts.Inputs.emplace_back(std::move(Inputs[i]), IK, IsSystem); 2922 } 2923 2924 Opts.DashX = DashX; 2925 2926 return Diags.getNumErrors() == NumErrorsBefore; 2927 } 2928 2929 std::string CompilerInvocation::GetResourcesPath(const char *Argv0, 2930 void *MainAddr) { 2931 std::string ClangExecutable = 2932 llvm::sys::fs::getMainExecutable(Argv0, MainAddr); 2933 return Driver::GetResourcesPath(ClangExecutable, CLANG_RESOURCE_DIR); 2934 } 2935 2936 static void GenerateHeaderSearchArgs(HeaderSearchOptions &Opts, 2937 SmallVectorImpl<const char *> &Args, 2938 CompilerInvocation::StringAllocator SA) { 2939 const HeaderSearchOptions *HeaderSearchOpts = &Opts; 2940 #define HEADER_SEARCH_OPTION_WITH_MARSHALLING(...) \ 2941 GENERATE_OPTION_WITH_MARSHALLING(Args, SA, __VA_ARGS__) 2942 #include "clang/Driver/Options.inc" 2943 #undef HEADER_SEARCH_OPTION_WITH_MARSHALLING 2944 2945 if (Opts.UseLibcxx) 2946 GenerateArg(Args, OPT_stdlib_EQ, "libc++", SA); 2947 2948 if (!Opts.ModuleCachePath.empty()) 2949 GenerateArg(Args, OPT_fmodules_cache_path, Opts.ModuleCachePath, SA); 2950 2951 for (const auto &File : Opts.PrebuiltModuleFiles) 2952 GenerateArg(Args, OPT_fmodule_file, File.first + "=" + File.second, SA); 2953 2954 for (const auto &Path : Opts.PrebuiltModulePaths) 2955 GenerateArg(Args, OPT_fprebuilt_module_path, Path, SA); 2956 2957 for (const auto &Macro : Opts.ModulesIgnoreMacros) 2958 GenerateArg(Args, OPT_fmodules_ignore_macro, Macro.val(), SA); 2959 2960 auto Matches = [](const HeaderSearchOptions::Entry &Entry, 2961 llvm::ArrayRef<frontend::IncludeDirGroup> Groups, 2962 std::optional<bool> IsFramework, 2963 std::optional<bool> IgnoreSysRoot) { 2964 return llvm::is_contained(Groups, Entry.Group) && 2965 (!IsFramework || (Entry.IsFramework == *IsFramework)) && 2966 (!IgnoreSysRoot || (Entry.IgnoreSysRoot == *IgnoreSysRoot)); 2967 }; 2968 2969 auto It = Opts.UserEntries.begin(); 2970 auto End = Opts.UserEntries.end(); 2971 2972 // Add -I..., -F..., and -index-header-map options in order. 2973 for (; It < End && Matches(*It, {frontend::IndexHeaderMap, frontend::Angled}, 2974 std::nullopt, true); 2975 ++It) { 2976 OptSpecifier Opt = [It, Matches]() { 2977 if (Matches(*It, frontend::IndexHeaderMap, true, true)) 2978 return OPT_F; 2979 if (Matches(*It, frontend::IndexHeaderMap, false, true)) 2980 return OPT_I; 2981 if (Matches(*It, frontend::Angled, true, true)) 2982 return OPT_F; 2983 if (Matches(*It, frontend::Angled, false, true)) 2984 return OPT_I; 2985 llvm_unreachable("Unexpected HeaderSearchOptions::Entry."); 2986 }(); 2987 2988 if (It->Group == frontend::IndexHeaderMap) 2989 GenerateArg(Args, OPT_index_header_map, SA); 2990 GenerateArg(Args, Opt, It->Path, SA); 2991 }; 2992 2993 // Note: some paths that came from "[-iprefix=xx] -iwithprefixbefore=yy" may 2994 // have already been generated as "-I[xx]yy". If that's the case, their 2995 // position on command line was such that this has no semantic impact on 2996 // include paths. 2997 for (; It < End && 2998 Matches(*It, {frontend::After, frontend::Angled}, false, true); 2999 ++It) { 3000 OptSpecifier Opt = 3001 It->Group == frontend::After ? OPT_iwithprefix : OPT_iwithprefixbefore; 3002 GenerateArg(Args, Opt, It->Path, SA); 3003 } 3004 3005 // Note: Some paths that came from "-idirafter=xxyy" may have already been 3006 // generated as "-iwithprefix=xxyy". If that's the case, their position on 3007 // command line was such that this has no semantic impact on include paths. 3008 for (; It < End && Matches(*It, {frontend::After}, false, true); ++It) 3009 GenerateArg(Args, OPT_idirafter, It->Path, SA); 3010 for (; It < End && Matches(*It, {frontend::Quoted}, false, true); ++It) 3011 GenerateArg(Args, OPT_iquote, It->Path, SA); 3012 for (; It < End && Matches(*It, {frontend::System}, false, std::nullopt); 3013 ++It) 3014 GenerateArg(Args, It->IgnoreSysRoot ? OPT_isystem : OPT_iwithsysroot, 3015 It->Path, SA); 3016 for (; It < End && Matches(*It, {frontend::System}, true, true); ++It) 3017 GenerateArg(Args, OPT_iframework, It->Path, SA); 3018 for (; It < End && Matches(*It, {frontend::System}, true, false); ++It) 3019 GenerateArg(Args, OPT_iframeworkwithsysroot, It->Path, SA); 3020 3021 // Add the paths for the various language specific isystem flags. 3022 for (; It < End && Matches(*It, {frontend::CSystem}, false, true); ++It) 3023 GenerateArg(Args, OPT_c_isystem, It->Path, SA); 3024 for (; It < End && Matches(*It, {frontend::CXXSystem}, false, true); ++It) 3025 GenerateArg(Args, OPT_cxx_isystem, It->Path, SA); 3026 for (; It < End && Matches(*It, {frontend::ObjCSystem}, false, true); ++It) 3027 GenerateArg(Args, OPT_objc_isystem, It->Path, SA); 3028 for (; It < End && Matches(*It, {frontend::ObjCXXSystem}, false, true); ++It) 3029 GenerateArg(Args, OPT_objcxx_isystem, It->Path, SA); 3030 3031 // Add the internal paths from a driver that detects standard include paths. 3032 // Note: Some paths that came from "-internal-isystem" arguments may have 3033 // already been generated as "-isystem". If that's the case, their position on 3034 // command line was such that this has no semantic impact on include paths. 3035 for (; It < End && 3036 Matches(*It, {frontend::System, frontend::ExternCSystem}, false, true); 3037 ++It) { 3038 OptSpecifier Opt = It->Group == frontend::System 3039 ? OPT_internal_isystem 3040 : OPT_internal_externc_isystem; 3041 GenerateArg(Args, Opt, It->Path, SA); 3042 } 3043 3044 assert(It == End && "Unhandled HeaderSearchOption::Entry."); 3045 3046 // Add the path prefixes which are implicitly treated as being system headers. 3047 for (const auto &P : Opts.SystemHeaderPrefixes) { 3048 OptSpecifier Opt = P.IsSystemHeader ? OPT_system_header_prefix 3049 : OPT_no_system_header_prefix; 3050 GenerateArg(Args, Opt, P.Prefix, SA); 3051 } 3052 3053 for (const std::string &F : Opts.VFSOverlayFiles) 3054 GenerateArg(Args, OPT_ivfsoverlay, F, SA); 3055 } 3056 3057 static bool ParseHeaderSearchArgs(HeaderSearchOptions &Opts, ArgList &Args, 3058 DiagnosticsEngine &Diags, 3059 const std::string &WorkingDir) { 3060 unsigned NumErrorsBefore = Diags.getNumErrors(); 3061 3062 HeaderSearchOptions *HeaderSearchOpts = &Opts; 3063 3064 #define HEADER_SEARCH_OPTION_WITH_MARSHALLING(...) \ 3065 PARSE_OPTION_WITH_MARSHALLING(Args, Diags, __VA_ARGS__) 3066 #include "clang/Driver/Options.inc" 3067 #undef HEADER_SEARCH_OPTION_WITH_MARSHALLING 3068 3069 if (const Arg *A = Args.getLastArg(OPT_stdlib_EQ)) 3070 Opts.UseLibcxx = (strcmp(A->getValue(), "libc++") == 0); 3071 3072 // Canonicalize -fmodules-cache-path before storing it. 3073 SmallString<128> P(Args.getLastArgValue(OPT_fmodules_cache_path)); 3074 if (!(P.empty() || llvm::sys::path::is_absolute(P))) { 3075 if (WorkingDir.empty()) 3076 llvm::sys::fs::make_absolute(P); 3077 else 3078 llvm::sys::fs::make_absolute(WorkingDir, P); 3079 } 3080 llvm::sys::path::remove_dots(P); 3081 Opts.ModuleCachePath = std::string(P.str()); 3082 3083 // Only the -fmodule-file=<name>=<file> form. 3084 for (const auto *A : Args.filtered(OPT_fmodule_file)) { 3085 StringRef Val = A->getValue(); 3086 if (Val.contains('=')) { 3087 auto Split = Val.split('='); 3088 Opts.PrebuiltModuleFiles.insert( 3089 {std::string(Split.first), std::string(Split.second)}); 3090 } 3091 } 3092 for (const auto *A : Args.filtered(OPT_fprebuilt_module_path)) 3093 Opts.AddPrebuiltModulePath(A->getValue()); 3094 3095 for (const auto *A : Args.filtered(OPT_fmodules_ignore_macro)) { 3096 StringRef MacroDef = A->getValue(); 3097 Opts.ModulesIgnoreMacros.insert( 3098 llvm::CachedHashString(MacroDef.split('=').first)); 3099 } 3100 3101 // Add -I..., -F..., and -index-header-map options in order. 3102 bool IsIndexHeaderMap = false; 3103 bool IsSysrootSpecified = 3104 Args.hasArg(OPT__sysroot_EQ) || Args.hasArg(OPT_isysroot); 3105 for (const auto *A : Args.filtered(OPT_I, OPT_F, OPT_index_header_map)) { 3106 if (A->getOption().matches(OPT_index_header_map)) { 3107 // -index-header-map applies to the next -I or -F. 3108 IsIndexHeaderMap = true; 3109 continue; 3110 } 3111 3112 frontend::IncludeDirGroup Group = 3113 IsIndexHeaderMap ? frontend::IndexHeaderMap : frontend::Angled; 3114 3115 bool IsFramework = A->getOption().matches(OPT_F); 3116 std::string Path = A->getValue(); 3117 3118 if (IsSysrootSpecified && !IsFramework && A->getValue()[0] == '=') { 3119 SmallString<32> Buffer; 3120 llvm::sys::path::append(Buffer, Opts.Sysroot, 3121 llvm::StringRef(A->getValue()).substr(1)); 3122 Path = std::string(Buffer.str()); 3123 } 3124 3125 Opts.AddPath(Path, Group, IsFramework, 3126 /*IgnoreSysroot*/ true); 3127 IsIndexHeaderMap = false; 3128 } 3129 3130 // Add -iprefix/-iwithprefix/-iwithprefixbefore options. 3131 StringRef Prefix = ""; // FIXME: This isn't the correct default prefix. 3132 for (const auto *A : 3133 Args.filtered(OPT_iprefix, OPT_iwithprefix, OPT_iwithprefixbefore)) { 3134 if (A->getOption().matches(OPT_iprefix)) 3135 Prefix = A->getValue(); 3136 else if (A->getOption().matches(OPT_iwithprefix)) 3137 Opts.AddPath(Prefix.str() + A->getValue(), frontend::After, false, true); 3138 else 3139 Opts.AddPath(Prefix.str() + A->getValue(), frontend::Angled, false, true); 3140 } 3141 3142 for (const auto *A : Args.filtered(OPT_idirafter)) 3143 Opts.AddPath(A->getValue(), frontend::After, false, true); 3144 for (const auto *A : Args.filtered(OPT_iquote)) 3145 Opts.AddPath(A->getValue(), frontend::Quoted, false, true); 3146 for (const auto *A : Args.filtered(OPT_isystem, OPT_iwithsysroot)) 3147 Opts.AddPath(A->getValue(), frontend::System, false, 3148 !A->getOption().matches(OPT_iwithsysroot)); 3149 for (const auto *A : Args.filtered(OPT_iframework)) 3150 Opts.AddPath(A->getValue(), frontend::System, true, true); 3151 for (const auto *A : Args.filtered(OPT_iframeworkwithsysroot)) 3152 Opts.AddPath(A->getValue(), frontend::System, /*IsFramework=*/true, 3153 /*IgnoreSysRoot=*/false); 3154 3155 // Add the paths for the various language specific isystem flags. 3156 for (const auto *A : Args.filtered(OPT_c_isystem)) 3157 Opts.AddPath(A->getValue(), frontend::CSystem, false, true); 3158 for (const auto *A : Args.filtered(OPT_cxx_isystem)) 3159 Opts.AddPath(A->getValue(), frontend::CXXSystem, false, true); 3160 for (const auto *A : Args.filtered(OPT_objc_isystem)) 3161 Opts.AddPath(A->getValue(), frontend::ObjCSystem, false,true); 3162 for (const auto *A : Args.filtered(OPT_objcxx_isystem)) 3163 Opts.AddPath(A->getValue(), frontend::ObjCXXSystem, false, true); 3164 3165 // Add the internal paths from a driver that detects standard include paths. 3166 for (const auto *A : 3167 Args.filtered(OPT_internal_isystem, OPT_internal_externc_isystem)) { 3168 frontend::IncludeDirGroup Group = frontend::System; 3169 if (A->getOption().matches(OPT_internal_externc_isystem)) 3170 Group = frontend::ExternCSystem; 3171 Opts.AddPath(A->getValue(), Group, false, true); 3172 } 3173 3174 // Add the path prefixes which are implicitly treated as being system headers. 3175 for (const auto *A : 3176 Args.filtered(OPT_system_header_prefix, OPT_no_system_header_prefix)) 3177 Opts.AddSystemHeaderPrefix( 3178 A->getValue(), A->getOption().matches(OPT_system_header_prefix)); 3179 3180 for (const auto *A : Args.filtered(OPT_ivfsoverlay, OPT_vfsoverlay)) 3181 Opts.AddVFSOverlayFile(A->getValue()); 3182 3183 return Diags.getNumErrors() == NumErrorsBefore; 3184 } 3185 3186 /// Check if input file kind and language standard are compatible. 3187 static bool IsInputCompatibleWithStandard(InputKind IK, 3188 const LangStandard &S) { 3189 switch (IK.getLanguage()) { 3190 case Language::Unknown: 3191 case Language::LLVM_IR: 3192 llvm_unreachable("should not parse language flags for this input"); 3193 3194 case Language::C: 3195 case Language::ObjC: 3196 case Language::RenderScript: 3197 return S.getLanguage() == Language::C; 3198 3199 case Language::OpenCL: 3200 return S.getLanguage() == Language::OpenCL || 3201 S.getLanguage() == Language::OpenCLCXX; 3202 3203 case Language::OpenCLCXX: 3204 return S.getLanguage() == Language::OpenCLCXX; 3205 3206 case Language::CXX: 3207 case Language::ObjCXX: 3208 return S.getLanguage() == Language::CXX; 3209 3210 case Language::CUDA: 3211 // FIXME: What -std= values should be permitted for CUDA compilations? 3212 return S.getLanguage() == Language::CUDA || 3213 S.getLanguage() == Language::CXX; 3214 3215 case Language::HIP: 3216 return S.getLanguage() == Language::CXX || S.getLanguage() == Language::HIP; 3217 3218 case Language::Asm: 3219 // Accept (and ignore) all -std= values. 3220 // FIXME: The -std= value is not ignored; it affects the tokenization 3221 // and preprocessing rules if we're preprocessing this asm input. 3222 return true; 3223 3224 case Language::HLSL: 3225 return S.getLanguage() == Language::HLSL; 3226 } 3227 3228 llvm_unreachable("unexpected input language"); 3229 } 3230 3231 /// Get language name for given input kind. 3232 static StringRef GetInputKindName(InputKind IK) { 3233 switch (IK.getLanguage()) { 3234 case Language::C: 3235 return "C"; 3236 case Language::ObjC: 3237 return "Objective-C"; 3238 case Language::CXX: 3239 return "C++"; 3240 case Language::ObjCXX: 3241 return "Objective-C++"; 3242 case Language::OpenCL: 3243 return "OpenCL"; 3244 case Language::OpenCLCXX: 3245 return "C++ for OpenCL"; 3246 case Language::CUDA: 3247 return "CUDA"; 3248 case Language::RenderScript: 3249 return "RenderScript"; 3250 case Language::HIP: 3251 return "HIP"; 3252 3253 case Language::Asm: 3254 return "Asm"; 3255 case Language::LLVM_IR: 3256 return "LLVM IR"; 3257 3258 case Language::HLSL: 3259 return "HLSL"; 3260 3261 case Language::Unknown: 3262 break; 3263 } 3264 llvm_unreachable("unknown input language"); 3265 } 3266 3267 void CompilerInvocation::GenerateLangArgs(const LangOptions &Opts, 3268 SmallVectorImpl<const char *> &Args, 3269 StringAllocator SA, 3270 const llvm::Triple &T, InputKind IK) { 3271 if (IK.getFormat() == InputKind::Precompiled || 3272 IK.getLanguage() == Language::LLVM_IR) { 3273 if (Opts.ObjCAutoRefCount) 3274 GenerateArg(Args, OPT_fobjc_arc, SA); 3275 if (Opts.PICLevel != 0) 3276 GenerateArg(Args, OPT_pic_level, Twine(Opts.PICLevel), SA); 3277 if (Opts.PIE) 3278 GenerateArg(Args, OPT_pic_is_pie, SA); 3279 for (StringRef Sanitizer : serializeSanitizerKinds(Opts.Sanitize)) 3280 GenerateArg(Args, OPT_fsanitize_EQ, Sanitizer, SA); 3281 3282 return; 3283 } 3284 3285 OptSpecifier StdOpt; 3286 switch (Opts.LangStd) { 3287 case LangStandard::lang_opencl10: 3288 case LangStandard::lang_opencl11: 3289 case LangStandard::lang_opencl12: 3290 case LangStandard::lang_opencl20: 3291 case LangStandard::lang_opencl30: 3292 case LangStandard::lang_openclcpp10: 3293 case LangStandard::lang_openclcpp2021: 3294 StdOpt = OPT_cl_std_EQ; 3295 break; 3296 default: 3297 StdOpt = OPT_std_EQ; 3298 break; 3299 } 3300 3301 auto LangStandard = LangStandard::getLangStandardForKind(Opts.LangStd); 3302 GenerateArg(Args, StdOpt, LangStandard.getName(), SA); 3303 3304 if (Opts.IncludeDefaultHeader) 3305 GenerateArg(Args, OPT_finclude_default_header, SA); 3306 if (Opts.DeclareOpenCLBuiltins) 3307 GenerateArg(Args, OPT_fdeclare_opencl_builtins, SA); 3308 3309 const LangOptions *LangOpts = &Opts; 3310 3311 #define LANG_OPTION_WITH_MARSHALLING(...) \ 3312 GENERATE_OPTION_WITH_MARSHALLING(Args, SA, __VA_ARGS__) 3313 #include "clang/Driver/Options.inc" 3314 #undef LANG_OPTION_WITH_MARSHALLING 3315 3316 // The '-fcf-protection=' option is generated by CodeGenOpts generator. 3317 3318 if (Opts.ObjC) { 3319 GenerateArg(Args, OPT_fobjc_runtime_EQ, Opts.ObjCRuntime.getAsString(), SA); 3320 3321 if (Opts.GC == LangOptions::GCOnly) 3322 GenerateArg(Args, OPT_fobjc_gc_only, SA); 3323 else if (Opts.GC == LangOptions::HybridGC) 3324 GenerateArg(Args, OPT_fobjc_gc, SA); 3325 else if (Opts.ObjCAutoRefCount == 1) 3326 GenerateArg(Args, OPT_fobjc_arc, SA); 3327 3328 if (Opts.ObjCWeakRuntime) 3329 GenerateArg(Args, OPT_fobjc_runtime_has_weak, SA); 3330 3331 if (Opts.ObjCWeak) 3332 GenerateArg(Args, OPT_fobjc_weak, SA); 3333 3334 if (Opts.ObjCSubscriptingLegacyRuntime) 3335 GenerateArg(Args, OPT_fobjc_subscripting_legacy_runtime, SA); 3336 } 3337 3338 if (Opts.GNUCVersion != 0) { 3339 unsigned Major = Opts.GNUCVersion / 100 / 100; 3340 unsigned Minor = (Opts.GNUCVersion / 100) % 100; 3341 unsigned Patch = Opts.GNUCVersion % 100; 3342 GenerateArg(Args, OPT_fgnuc_version_EQ, 3343 Twine(Major) + "." + Twine(Minor) + "." + Twine(Patch), SA); 3344 } 3345 3346 if (Opts.IgnoreXCOFFVisibility) 3347 GenerateArg(Args, OPT_mignore_xcoff_visibility, SA); 3348 3349 if (Opts.SignedOverflowBehavior == LangOptions::SOB_Trapping) { 3350 GenerateArg(Args, OPT_ftrapv, SA); 3351 GenerateArg(Args, OPT_ftrapv_handler, Opts.OverflowHandler, SA); 3352 } else if (Opts.SignedOverflowBehavior == LangOptions::SOB_Defined) { 3353 GenerateArg(Args, OPT_fwrapv, SA); 3354 } 3355 3356 if (Opts.MSCompatibilityVersion != 0) { 3357 unsigned Major = Opts.MSCompatibilityVersion / 10000000; 3358 unsigned Minor = (Opts.MSCompatibilityVersion / 100000) % 100; 3359 unsigned Subminor = Opts.MSCompatibilityVersion % 100000; 3360 GenerateArg(Args, OPT_fms_compatibility_version, 3361 Twine(Major) + "." + Twine(Minor) + "." + Twine(Subminor), SA); 3362 } 3363 3364 if ((!Opts.GNUMode && !Opts.MSVCCompat && !Opts.CPlusPlus17) || T.isOSzOS()) { 3365 if (!Opts.Trigraphs) 3366 GenerateArg(Args, OPT_fno_trigraphs, SA); 3367 } else { 3368 if (Opts.Trigraphs) 3369 GenerateArg(Args, OPT_ftrigraphs, SA); 3370 } 3371 3372 if (Opts.Blocks && !(Opts.OpenCL && Opts.OpenCLVersion == 200)) 3373 GenerateArg(Args, OPT_fblocks, SA); 3374 3375 if (Opts.ConvergentFunctions && 3376 !(Opts.OpenCL || (Opts.CUDA && Opts.CUDAIsDevice) || Opts.SYCLIsDevice)) 3377 GenerateArg(Args, OPT_fconvergent_functions, SA); 3378 3379 if (Opts.NoBuiltin && !Opts.Freestanding) 3380 GenerateArg(Args, OPT_fno_builtin, SA); 3381 3382 if (!Opts.NoBuiltin) 3383 for (const auto &Func : Opts.NoBuiltinFuncs) 3384 GenerateArg(Args, OPT_fno_builtin_, Func, SA); 3385 3386 if (Opts.LongDoubleSize == 128) 3387 GenerateArg(Args, OPT_mlong_double_128, SA); 3388 else if (Opts.LongDoubleSize == 64) 3389 GenerateArg(Args, OPT_mlong_double_64, SA); 3390 else if (Opts.LongDoubleSize == 80) 3391 GenerateArg(Args, OPT_mlong_double_80, SA); 3392 3393 // Not generating '-mrtd', it's just an alias for '-fdefault-calling-conv='. 3394 3395 // OpenMP was requested via '-fopenmp', not implied by '-fopenmp-simd' or 3396 // '-fopenmp-targets='. 3397 if (Opts.OpenMP && !Opts.OpenMPSimd) { 3398 GenerateArg(Args, OPT_fopenmp, SA); 3399 3400 if (Opts.OpenMP != 51) 3401 GenerateArg(Args, OPT_fopenmp_version_EQ, Twine(Opts.OpenMP), SA); 3402 3403 if (!Opts.OpenMPUseTLS) 3404 GenerateArg(Args, OPT_fnoopenmp_use_tls, SA); 3405 3406 if (Opts.OpenMPIsTargetDevice) 3407 GenerateArg(Args, OPT_fopenmp_is_target_device, SA); 3408 3409 if (Opts.OpenMPIRBuilder) 3410 GenerateArg(Args, OPT_fopenmp_enable_irbuilder, SA); 3411 } 3412 3413 if (Opts.OpenMPSimd) { 3414 GenerateArg(Args, OPT_fopenmp_simd, SA); 3415 3416 if (Opts.OpenMP != 51) 3417 GenerateArg(Args, OPT_fopenmp_version_EQ, Twine(Opts.OpenMP), SA); 3418 } 3419 3420 if (Opts.OpenMPThreadSubscription) 3421 GenerateArg(Args, OPT_fopenmp_assume_threads_oversubscription, SA); 3422 3423 if (Opts.OpenMPTeamSubscription) 3424 GenerateArg(Args, OPT_fopenmp_assume_teams_oversubscription, SA); 3425 3426 if (Opts.OpenMPTargetDebug != 0) 3427 GenerateArg(Args, OPT_fopenmp_target_debug_EQ, 3428 Twine(Opts.OpenMPTargetDebug), SA); 3429 3430 if (Opts.OpenMPCUDANumSMs != 0) 3431 GenerateArg(Args, OPT_fopenmp_cuda_number_of_sm_EQ, 3432 Twine(Opts.OpenMPCUDANumSMs), SA); 3433 3434 if (Opts.OpenMPCUDABlocksPerSM != 0) 3435 GenerateArg(Args, OPT_fopenmp_cuda_blocks_per_sm_EQ, 3436 Twine(Opts.OpenMPCUDABlocksPerSM), SA); 3437 3438 if (Opts.OpenMPCUDAReductionBufNum != 1024) 3439 GenerateArg(Args, OPT_fopenmp_cuda_teams_reduction_recs_num_EQ, 3440 Twine(Opts.OpenMPCUDAReductionBufNum), SA); 3441 3442 if (!Opts.OMPTargetTriples.empty()) { 3443 std::string Targets; 3444 llvm::raw_string_ostream OS(Targets); 3445 llvm::interleave( 3446 Opts.OMPTargetTriples, OS, 3447 [&OS](const llvm::Triple &T) { OS << T.str(); }, ","); 3448 GenerateArg(Args, OPT_fopenmp_targets_EQ, OS.str(), SA); 3449 } 3450 3451 if (!Opts.OMPHostIRFile.empty()) 3452 GenerateArg(Args, OPT_fopenmp_host_ir_file_path, Opts.OMPHostIRFile, SA); 3453 3454 if (Opts.OpenMPCUDAMode) 3455 GenerateArg(Args, OPT_fopenmp_cuda_mode, SA); 3456 3457 // The arguments used to set Optimize, OptimizeSize and NoInlineDefine are 3458 // generated from CodeGenOptions. 3459 3460 if (Opts.DefaultFPContractMode == LangOptions::FPM_Fast) 3461 GenerateArg(Args, OPT_ffp_contract, "fast", SA); 3462 else if (Opts.DefaultFPContractMode == LangOptions::FPM_On) 3463 GenerateArg(Args, OPT_ffp_contract, "on", SA); 3464 else if (Opts.DefaultFPContractMode == LangOptions::FPM_Off) 3465 GenerateArg(Args, OPT_ffp_contract, "off", SA); 3466 else if (Opts.DefaultFPContractMode == LangOptions::FPM_FastHonorPragmas) 3467 GenerateArg(Args, OPT_ffp_contract, "fast-honor-pragmas", SA); 3468 3469 for (StringRef Sanitizer : serializeSanitizerKinds(Opts.Sanitize)) 3470 GenerateArg(Args, OPT_fsanitize_EQ, Sanitizer, SA); 3471 3472 // Conflating '-fsanitize-system-ignorelist' and '-fsanitize-ignorelist'. 3473 for (const std::string &F : Opts.NoSanitizeFiles) 3474 GenerateArg(Args, OPT_fsanitize_ignorelist_EQ, F, SA); 3475 3476 if (Opts.getClangABICompat() == LangOptions::ClangABI::Ver3_8) 3477 GenerateArg(Args, OPT_fclang_abi_compat_EQ, "3.8", SA); 3478 else if (Opts.getClangABICompat() == LangOptions::ClangABI::Ver4) 3479 GenerateArg(Args, OPT_fclang_abi_compat_EQ, "4.0", SA); 3480 else if (Opts.getClangABICompat() == LangOptions::ClangABI::Ver6) 3481 GenerateArg(Args, OPT_fclang_abi_compat_EQ, "6.0", SA); 3482 else if (Opts.getClangABICompat() == LangOptions::ClangABI::Ver7) 3483 GenerateArg(Args, OPT_fclang_abi_compat_EQ, "7.0", SA); 3484 else if (Opts.getClangABICompat() == LangOptions::ClangABI::Ver9) 3485 GenerateArg(Args, OPT_fclang_abi_compat_EQ, "9.0", SA); 3486 else if (Opts.getClangABICompat() == LangOptions::ClangABI::Ver11) 3487 GenerateArg(Args, OPT_fclang_abi_compat_EQ, "11.0", SA); 3488 else if (Opts.getClangABICompat() == LangOptions::ClangABI::Ver12) 3489 GenerateArg(Args, OPT_fclang_abi_compat_EQ, "12.0", SA); 3490 else if (Opts.getClangABICompat() == LangOptions::ClangABI::Ver14) 3491 GenerateArg(Args, OPT_fclang_abi_compat_EQ, "14.0", SA); 3492 else if (Opts.getClangABICompat() == LangOptions::ClangABI::Ver15) 3493 GenerateArg(Args, OPT_fclang_abi_compat_EQ, "15.0", SA); 3494 3495 if (Opts.getSignReturnAddressScope() == 3496 LangOptions::SignReturnAddressScopeKind::All) 3497 GenerateArg(Args, OPT_msign_return_address_EQ, "all", SA); 3498 else if (Opts.getSignReturnAddressScope() == 3499 LangOptions::SignReturnAddressScopeKind::NonLeaf) 3500 GenerateArg(Args, OPT_msign_return_address_EQ, "non-leaf", SA); 3501 3502 if (Opts.getSignReturnAddressKey() == 3503 LangOptions::SignReturnAddressKeyKind::BKey) 3504 GenerateArg(Args, OPT_msign_return_address_key_EQ, "b_key", SA); 3505 3506 if (Opts.CXXABI) 3507 GenerateArg(Args, OPT_fcxx_abi_EQ, TargetCXXABI::getSpelling(*Opts.CXXABI), 3508 SA); 3509 3510 if (Opts.RelativeCXXABIVTables) 3511 GenerateArg(Args, OPT_fexperimental_relative_cxx_abi_vtables, SA); 3512 else 3513 GenerateArg(Args, OPT_fno_experimental_relative_cxx_abi_vtables, SA); 3514 3515 if (Opts.UseTargetPathSeparator) 3516 GenerateArg(Args, OPT_ffile_reproducible, SA); 3517 else 3518 GenerateArg(Args, OPT_fno_file_reproducible, SA); 3519 3520 for (const auto &MP : Opts.MacroPrefixMap) 3521 GenerateArg(Args, OPT_fmacro_prefix_map_EQ, MP.first + "=" + MP.second, SA); 3522 3523 if (!Opts.RandstructSeed.empty()) 3524 GenerateArg(Args, OPT_frandomize_layout_seed_EQ, Opts.RandstructSeed, SA); 3525 } 3526 3527 bool CompilerInvocation::ParseLangArgs(LangOptions &Opts, ArgList &Args, 3528 InputKind IK, const llvm::Triple &T, 3529 std::vector<std::string> &Includes, 3530 DiagnosticsEngine &Diags) { 3531 unsigned NumErrorsBefore = Diags.getNumErrors(); 3532 3533 if (IK.getFormat() == InputKind::Precompiled || 3534 IK.getLanguage() == Language::LLVM_IR) { 3535 // ObjCAAutoRefCount and Sanitize LangOpts are used to setup the 3536 // PassManager in BackendUtil.cpp. They need to be initialized no matter 3537 // what the input type is. 3538 if (Args.hasArg(OPT_fobjc_arc)) 3539 Opts.ObjCAutoRefCount = 1; 3540 // PICLevel and PIELevel are needed during code generation and this should 3541 // be set regardless of the input type. 3542 Opts.PICLevel = getLastArgIntValue(Args, OPT_pic_level, 0, Diags); 3543 Opts.PIE = Args.hasArg(OPT_pic_is_pie); 3544 parseSanitizerKinds("-fsanitize=", Args.getAllArgValues(OPT_fsanitize_EQ), 3545 Diags, Opts.Sanitize); 3546 3547 return Diags.getNumErrors() == NumErrorsBefore; 3548 } 3549 3550 // Other LangOpts are only initialized when the input is not AST or LLVM IR. 3551 // FIXME: Should we really be parsing this for an Language::Asm input? 3552 3553 // FIXME: Cleanup per-file based stuff. 3554 LangStandard::Kind LangStd = LangStandard::lang_unspecified; 3555 if (const Arg *A = Args.getLastArg(OPT_std_EQ)) { 3556 LangStd = LangStandard::getLangKind(A->getValue()); 3557 if (LangStd == LangStandard::lang_unspecified) { 3558 Diags.Report(diag::err_drv_invalid_value) 3559 << A->getAsString(Args) << A->getValue(); 3560 // Report supported standards with short description. 3561 for (unsigned KindValue = 0; 3562 KindValue != LangStandard::lang_unspecified; 3563 ++KindValue) { 3564 const LangStandard &Std = LangStandard::getLangStandardForKind( 3565 static_cast<LangStandard::Kind>(KindValue)); 3566 if (IsInputCompatibleWithStandard(IK, Std)) { 3567 auto Diag = Diags.Report(diag::note_drv_use_standard); 3568 Diag << Std.getName() << Std.getDescription(); 3569 unsigned NumAliases = 0; 3570 #define LANGSTANDARD(id, name, lang, desc, features) 3571 #define LANGSTANDARD_ALIAS(id, alias) \ 3572 if (KindValue == LangStandard::lang_##id) ++NumAliases; 3573 #define LANGSTANDARD_ALIAS_DEPR(id, alias) 3574 #include "clang/Basic/LangStandards.def" 3575 Diag << NumAliases; 3576 #define LANGSTANDARD(id, name, lang, desc, features) 3577 #define LANGSTANDARD_ALIAS(id, alias) \ 3578 if (KindValue == LangStandard::lang_##id) Diag << alias; 3579 #define LANGSTANDARD_ALIAS_DEPR(id, alias) 3580 #include "clang/Basic/LangStandards.def" 3581 } 3582 } 3583 } else { 3584 // Valid standard, check to make sure language and standard are 3585 // compatible. 3586 const LangStandard &Std = LangStandard::getLangStandardForKind(LangStd); 3587 if (!IsInputCompatibleWithStandard(IK, Std)) { 3588 Diags.Report(diag::err_drv_argument_not_allowed_with) 3589 << A->getAsString(Args) << GetInputKindName(IK); 3590 } 3591 } 3592 } 3593 3594 // -cl-std only applies for OpenCL language standards. 3595 // Override the -std option in this case. 3596 if (const Arg *A = Args.getLastArg(OPT_cl_std_EQ)) { 3597 LangStandard::Kind OpenCLLangStd 3598 = llvm::StringSwitch<LangStandard::Kind>(A->getValue()) 3599 .Cases("cl", "CL", LangStandard::lang_opencl10) 3600 .Cases("cl1.0", "CL1.0", LangStandard::lang_opencl10) 3601 .Cases("cl1.1", "CL1.1", LangStandard::lang_opencl11) 3602 .Cases("cl1.2", "CL1.2", LangStandard::lang_opencl12) 3603 .Cases("cl2.0", "CL2.0", LangStandard::lang_opencl20) 3604 .Cases("cl3.0", "CL3.0", LangStandard::lang_opencl30) 3605 .Cases("clc++", "CLC++", LangStandard::lang_openclcpp10) 3606 .Cases("clc++1.0", "CLC++1.0", LangStandard::lang_openclcpp10) 3607 .Cases("clc++2021", "CLC++2021", LangStandard::lang_openclcpp2021) 3608 .Default(LangStandard::lang_unspecified); 3609 3610 if (OpenCLLangStd == LangStandard::lang_unspecified) { 3611 Diags.Report(diag::err_drv_invalid_value) 3612 << A->getAsString(Args) << A->getValue(); 3613 } 3614 else 3615 LangStd = OpenCLLangStd; 3616 } 3617 3618 // These need to be parsed now. They are used to set OpenCL defaults. 3619 Opts.IncludeDefaultHeader = Args.hasArg(OPT_finclude_default_header); 3620 Opts.DeclareOpenCLBuiltins = Args.hasArg(OPT_fdeclare_opencl_builtins); 3621 3622 LangOptions::setLangDefaults(Opts, IK.getLanguage(), T, Includes, LangStd); 3623 3624 // The key paths of codegen options defined in Options.td start with 3625 // "LangOpts->". Let's provide the expected variable name and type. 3626 LangOptions *LangOpts = &Opts; 3627 3628 #define LANG_OPTION_WITH_MARSHALLING(...) \ 3629 PARSE_OPTION_WITH_MARSHALLING(Args, Diags, __VA_ARGS__) 3630 #include "clang/Driver/Options.inc" 3631 #undef LANG_OPTION_WITH_MARSHALLING 3632 3633 if (const Arg *A = Args.getLastArg(OPT_fcf_protection_EQ)) { 3634 StringRef Name = A->getValue(); 3635 if (Name == "full" || Name == "branch") { 3636 Opts.CFProtectionBranch = 1; 3637 } 3638 } 3639 3640 if ((Args.hasArg(OPT_fsycl_is_device) || Args.hasArg(OPT_fsycl_is_host)) && 3641 !Args.hasArg(OPT_sycl_std_EQ)) { 3642 // If the user supplied -fsycl-is-device or -fsycl-is-host, but failed to 3643 // provide -sycl-std=, we want to default it to whatever the default SYCL 3644 // version is. I could not find a way to express this with the options 3645 // tablegen because we still want this value to be SYCL_None when the user 3646 // is not in device or host mode. 3647 Opts.setSYCLVersion(LangOptions::SYCL_Default); 3648 } 3649 3650 if (Opts.ObjC) { 3651 if (Arg *arg = Args.getLastArg(OPT_fobjc_runtime_EQ)) { 3652 StringRef value = arg->getValue(); 3653 if (Opts.ObjCRuntime.tryParse(value)) 3654 Diags.Report(diag::err_drv_unknown_objc_runtime) << value; 3655 } 3656 3657 if (Args.hasArg(OPT_fobjc_gc_only)) 3658 Opts.setGC(LangOptions::GCOnly); 3659 else if (Args.hasArg(OPT_fobjc_gc)) 3660 Opts.setGC(LangOptions::HybridGC); 3661 else if (Args.hasArg(OPT_fobjc_arc)) { 3662 Opts.ObjCAutoRefCount = 1; 3663 if (!Opts.ObjCRuntime.allowsARC()) 3664 Diags.Report(diag::err_arc_unsupported_on_runtime); 3665 } 3666 3667 // ObjCWeakRuntime tracks whether the runtime supports __weak, not 3668 // whether the feature is actually enabled. This is predominantly 3669 // determined by -fobjc-runtime, but we allow it to be overridden 3670 // from the command line for testing purposes. 3671 if (Args.hasArg(OPT_fobjc_runtime_has_weak)) 3672 Opts.ObjCWeakRuntime = 1; 3673 else 3674 Opts.ObjCWeakRuntime = Opts.ObjCRuntime.allowsWeak(); 3675 3676 // ObjCWeak determines whether __weak is actually enabled. 3677 // Note that we allow -fno-objc-weak to disable this even in ARC mode. 3678 if (auto weakArg = Args.getLastArg(OPT_fobjc_weak, OPT_fno_objc_weak)) { 3679 if (!weakArg->getOption().matches(OPT_fobjc_weak)) { 3680 assert(!Opts.ObjCWeak); 3681 } else if (Opts.getGC() != LangOptions::NonGC) { 3682 Diags.Report(diag::err_objc_weak_with_gc); 3683 } else if (!Opts.ObjCWeakRuntime) { 3684 Diags.Report(diag::err_objc_weak_unsupported); 3685 } else { 3686 Opts.ObjCWeak = 1; 3687 } 3688 } else if (Opts.ObjCAutoRefCount) { 3689 Opts.ObjCWeak = Opts.ObjCWeakRuntime; 3690 } 3691 3692 if (Args.hasArg(OPT_fobjc_subscripting_legacy_runtime)) 3693 Opts.ObjCSubscriptingLegacyRuntime = 3694 (Opts.ObjCRuntime.getKind() == ObjCRuntime::FragileMacOSX); 3695 } 3696 3697 if (Arg *A = Args.getLastArg(options::OPT_fgnuc_version_EQ)) { 3698 // Check that the version has 1 to 3 components and the minor and patch 3699 // versions fit in two decimal digits. 3700 VersionTuple GNUCVer; 3701 bool Invalid = GNUCVer.tryParse(A->getValue()); 3702 unsigned Major = GNUCVer.getMajor(); 3703 unsigned Minor = GNUCVer.getMinor().value_or(0); 3704 unsigned Patch = GNUCVer.getSubminor().value_or(0); 3705 if (Invalid || GNUCVer.getBuild() || Minor >= 100 || Patch >= 100) { 3706 Diags.Report(diag::err_drv_invalid_value) 3707 << A->getAsString(Args) << A->getValue(); 3708 } 3709 Opts.GNUCVersion = Major * 100 * 100 + Minor * 100 + Patch; 3710 } 3711 3712 if (T.isOSAIX() && (Args.hasArg(OPT_mignore_xcoff_visibility))) 3713 Opts.IgnoreXCOFFVisibility = 1; 3714 3715 if (Args.hasArg(OPT_ftrapv)) { 3716 Opts.setSignedOverflowBehavior(LangOptions::SOB_Trapping); 3717 // Set the handler, if one is specified. 3718 Opts.OverflowHandler = 3719 std::string(Args.getLastArgValue(OPT_ftrapv_handler)); 3720 } 3721 else if (Args.hasArg(OPT_fwrapv)) 3722 Opts.setSignedOverflowBehavior(LangOptions::SOB_Defined); 3723 3724 Opts.MSCompatibilityVersion = 0; 3725 if (const Arg *A = Args.getLastArg(OPT_fms_compatibility_version)) { 3726 VersionTuple VT; 3727 if (VT.tryParse(A->getValue())) 3728 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) 3729 << A->getValue(); 3730 Opts.MSCompatibilityVersion = VT.getMajor() * 10000000 + 3731 VT.getMinor().value_or(0) * 100000 + 3732 VT.getSubminor().value_or(0); 3733 } 3734 3735 // Mimicking gcc's behavior, trigraphs are only enabled if -trigraphs 3736 // is specified, or -std is set to a conforming mode. 3737 // Trigraphs are disabled by default in c++1z onwards. 3738 // For z/OS, trigraphs are enabled by default (without regard to the above). 3739 Opts.Trigraphs = 3740 (!Opts.GNUMode && !Opts.MSVCCompat && !Opts.CPlusPlus17) || T.isOSzOS(); 3741 Opts.Trigraphs = 3742 Args.hasFlag(OPT_ftrigraphs, OPT_fno_trigraphs, Opts.Trigraphs); 3743 3744 Opts.Blocks = Args.hasArg(OPT_fblocks) || (Opts.OpenCL 3745 && Opts.OpenCLVersion == 200); 3746 3747 Opts.ConvergentFunctions = Args.hasArg(OPT_fconvergent_functions) || 3748 Opts.OpenCL || (Opts.CUDA && Opts.CUDAIsDevice) || 3749 Opts.SYCLIsDevice; 3750 3751 Opts.NoBuiltin = Args.hasArg(OPT_fno_builtin) || Opts.Freestanding; 3752 if (!Opts.NoBuiltin) 3753 getAllNoBuiltinFuncValues(Args, Opts.NoBuiltinFuncs); 3754 if (Arg *A = Args.getLastArg(options::OPT_LongDouble_Group)) { 3755 if (A->getOption().matches(options::OPT_mlong_double_64)) 3756 Opts.LongDoubleSize = 64; 3757 else if (A->getOption().matches(options::OPT_mlong_double_80)) 3758 Opts.LongDoubleSize = 80; 3759 else if (A->getOption().matches(options::OPT_mlong_double_128)) 3760 Opts.LongDoubleSize = 128; 3761 else 3762 Opts.LongDoubleSize = 0; 3763 } 3764 if (Opts.FastRelaxedMath || Opts.CLUnsafeMath) 3765 Opts.setDefaultFPContractMode(LangOptions::FPM_Fast); 3766 3767 llvm::sort(Opts.ModuleFeatures); 3768 3769 // -mrtd option 3770 if (Arg *A = Args.getLastArg(OPT_mrtd)) { 3771 if (Opts.getDefaultCallingConv() != LangOptions::DCC_None) 3772 Diags.Report(diag::err_drv_argument_not_allowed_with) 3773 << A->getSpelling() << "-fdefault-calling-conv"; 3774 else { 3775 if (T.getArch() != llvm::Triple::x86) 3776 Diags.Report(diag::err_drv_argument_not_allowed_with) 3777 << A->getSpelling() << T.getTriple(); 3778 else 3779 Opts.setDefaultCallingConv(LangOptions::DCC_StdCall); 3780 } 3781 } 3782 3783 // Check if -fopenmp is specified and set default version to 5.0. 3784 Opts.OpenMP = Args.hasArg(OPT_fopenmp) ? 51 : 0; 3785 // Check if -fopenmp-simd is specified. 3786 bool IsSimdSpecified = 3787 Args.hasFlag(options::OPT_fopenmp_simd, options::OPT_fno_openmp_simd, 3788 /*Default=*/false); 3789 Opts.OpenMPSimd = !Opts.OpenMP && IsSimdSpecified; 3790 Opts.OpenMPUseTLS = 3791 Opts.OpenMP && !Args.hasArg(options::OPT_fnoopenmp_use_tls); 3792 Opts.OpenMPIsTargetDevice = 3793 Opts.OpenMP && Args.hasArg(options::OPT_fopenmp_is_target_device); 3794 Opts.OpenMPIRBuilder = 3795 Opts.OpenMP && Args.hasArg(options::OPT_fopenmp_enable_irbuilder); 3796 bool IsTargetSpecified = 3797 Opts.OpenMPIsTargetDevice || Args.hasArg(options::OPT_fopenmp_targets_EQ); 3798 3799 Opts.ConvergentFunctions = 3800 Opts.ConvergentFunctions || Opts.OpenMPIsTargetDevice; 3801 3802 if (Opts.OpenMP || Opts.OpenMPSimd) { 3803 if (int Version = getLastArgIntValue( 3804 Args, OPT_fopenmp_version_EQ, 3805 (IsSimdSpecified || IsTargetSpecified) ? 51 : Opts.OpenMP, Diags)) 3806 Opts.OpenMP = Version; 3807 // Provide diagnostic when a given target is not expected to be an OpenMP 3808 // device or host. 3809 if (!Opts.OpenMPIsTargetDevice) { 3810 switch (T.getArch()) { 3811 default: 3812 break; 3813 // Add unsupported host targets here: 3814 case llvm::Triple::nvptx: 3815 case llvm::Triple::nvptx64: 3816 Diags.Report(diag::err_drv_omp_host_target_not_supported) << T.str(); 3817 break; 3818 } 3819 } 3820 } 3821 3822 // Set the flag to prevent the implementation from emitting device exception 3823 // handling code for those requiring so. 3824 if ((Opts.OpenMPIsTargetDevice && (T.isNVPTX() || T.isAMDGCN())) || 3825 Opts.OpenCLCPlusPlus) { 3826 3827 Opts.Exceptions = 0; 3828 Opts.CXXExceptions = 0; 3829 } 3830 if (Opts.OpenMPIsTargetDevice && T.isNVPTX()) { 3831 Opts.OpenMPCUDANumSMs = 3832 getLastArgIntValue(Args, options::OPT_fopenmp_cuda_number_of_sm_EQ, 3833 Opts.OpenMPCUDANumSMs, Diags); 3834 Opts.OpenMPCUDABlocksPerSM = 3835 getLastArgIntValue(Args, options::OPT_fopenmp_cuda_blocks_per_sm_EQ, 3836 Opts.OpenMPCUDABlocksPerSM, Diags); 3837 Opts.OpenMPCUDAReductionBufNum = getLastArgIntValue( 3838 Args, options::OPT_fopenmp_cuda_teams_reduction_recs_num_EQ, 3839 Opts.OpenMPCUDAReductionBufNum, Diags); 3840 } 3841 3842 // Set the value of the debugging flag used in the new offloading device RTL. 3843 // Set either by a specific value or to a default if not specified. 3844 if (Opts.OpenMPIsTargetDevice && (Args.hasArg(OPT_fopenmp_target_debug) || 3845 Args.hasArg(OPT_fopenmp_target_debug_EQ))) { 3846 Opts.OpenMPTargetDebug = getLastArgIntValue( 3847 Args, OPT_fopenmp_target_debug_EQ, Opts.OpenMPTargetDebug, Diags); 3848 if (!Opts.OpenMPTargetDebug && Args.hasArg(OPT_fopenmp_target_debug)) 3849 Opts.OpenMPTargetDebug = 1; 3850 } 3851 3852 if (Opts.OpenMPIsTargetDevice) { 3853 if (Args.hasArg(OPT_fopenmp_assume_teams_oversubscription)) 3854 Opts.OpenMPTeamSubscription = true; 3855 if (Args.hasArg(OPT_fopenmp_assume_threads_oversubscription)) 3856 Opts.OpenMPThreadSubscription = true; 3857 } 3858 3859 // Get the OpenMP target triples if any. 3860 if (Arg *A = Args.getLastArg(options::OPT_fopenmp_targets_EQ)) { 3861 enum ArchPtrSize { Arch16Bit, Arch32Bit, Arch64Bit }; 3862 auto getArchPtrSize = [](const llvm::Triple &T) { 3863 if (T.isArch16Bit()) 3864 return Arch16Bit; 3865 if (T.isArch32Bit()) 3866 return Arch32Bit; 3867 assert(T.isArch64Bit() && "Expected 64-bit architecture"); 3868 return Arch64Bit; 3869 }; 3870 3871 for (unsigned i = 0; i < A->getNumValues(); ++i) { 3872 llvm::Triple TT(A->getValue(i)); 3873 3874 if (TT.getArch() == llvm::Triple::UnknownArch || 3875 !(TT.getArch() == llvm::Triple::aarch64 || TT.isPPC() || 3876 TT.getArch() == llvm::Triple::nvptx || 3877 TT.getArch() == llvm::Triple::nvptx64 || 3878 TT.getArch() == llvm::Triple::amdgcn || 3879 TT.getArch() == llvm::Triple::x86 || 3880 TT.getArch() == llvm::Triple::x86_64)) 3881 Diags.Report(diag::err_drv_invalid_omp_target) << A->getValue(i); 3882 else if (getArchPtrSize(T) != getArchPtrSize(TT)) 3883 Diags.Report(diag::err_drv_incompatible_omp_arch) 3884 << A->getValue(i) << T.str(); 3885 else 3886 Opts.OMPTargetTriples.push_back(TT); 3887 } 3888 } 3889 3890 // Get OpenMP host file path if any and report if a non existent file is 3891 // found 3892 if (Arg *A = Args.getLastArg(options::OPT_fopenmp_host_ir_file_path)) { 3893 Opts.OMPHostIRFile = A->getValue(); 3894 if (!llvm::sys::fs::exists(Opts.OMPHostIRFile)) 3895 Diags.Report(diag::err_drv_omp_host_ir_file_not_found) 3896 << Opts.OMPHostIRFile; 3897 } 3898 3899 // Set CUDA mode for OpenMP target NVPTX/AMDGCN if specified in options 3900 Opts.OpenMPCUDAMode = Opts.OpenMPIsTargetDevice && 3901 (T.isNVPTX() || T.isAMDGCN()) && 3902 Args.hasArg(options::OPT_fopenmp_cuda_mode); 3903 3904 // FIXME: Eliminate this dependency. 3905 unsigned Opt = getOptimizationLevel(Args, IK, Diags), 3906 OptSize = getOptimizationLevelSize(Args); 3907 Opts.Optimize = Opt != 0; 3908 Opts.OptimizeSize = OptSize != 0; 3909 3910 // This is the __NO_INLINE__ define, which just depends on things like the 3911 // optimization level and -fno-inline, not actually whether the backend has 3912 // inlining enabled. 3913 Opts.NoInlineDefine = !Opts.Optimize; 3914 if (Arg *InlineArg = Args.getLastArg( 3915 options::OPT_finline_functions, options::OPT_finline_hint_functions, 3916 options::OPT_fno_inline_functions, options::OPT_fno_inline)) 3917 if (InlineArg->getOption().matches(options::OPT_fno_inline)) 3918 Opts.NoInlineDefine = true; 3919 3920 if (Arg *A = Args.getLastArg(OPT_ffp_contract)) { 3921 StringRef Val = A->getValue(); 3922 if (Val == "fast") 3923 Opts.setDefaultFPContractMode(LangOptions::FPM_Fast); 3924 else if (Val == "on") 3925 Opts.setDefaultFPContractMode(LangOptions::FPM_On); 3926 else if (Val == "off") 3927 Opts.setDefaultFPContractMode(LangOptions::FPM_Off); 3928 else if (Val == "fast-honor-pragmas") 3929 Opts.setDefaultFPContractMode(LangOptions::FPM_FastHonorPragmas); 3930 else 3931 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Val; 3932 } 3933 3934 // Parse -fsanitize= arguments. 3935 parseSanitizerKinds("-fsanitize=", Args.getAllArgValues(OPT_fsanitize_EQ), 3936 Diags, Opts.Sanitize); 3937 Opts.NoSanitizeFiles = Args.getAllArgValues(OPT_fsanitize_ignorelist_EQ); 3938 std::vector<std::string> systemIgnorelists = 3939 Args.getAllArgValues(OPT_fsanitize_system_ignorelist_EQ); 3940 Opts.NoSanitizeFiles.insert(Opts.NoSanitizeFiles.end(), 3941 systemIgnorelists.begin(), 3942 systemIgnorelists.end()); 3943 3944 if (Arg *A = Args.getLastArg(OPT_fclang_abi_compat_EQ)) { 3945 Opts.setClangABICompat(LangOptions::ClangABI::Latest); 3946 3947 StringRef Ver = A->getValue(); 3948 std::pair<StringRef, StringRef> VerParts = Ver.split('.'); 3949 unsigned Major, Minor = 0; 3950 3951 // Check the version number is valid: either 3.x (0 <= x <= 9) or 3952 // y or y.0 (4 <= y <= current version). 3953 if (!VerParts.first.startswith("0") && 3954 !VerParts.first.getAsInteger(10, Major) && 3955 3 <= Major && Major <= CLANG_VERSION_MAJOR && 3956 (Major == 3 ? VerParts.second.size() == 1 && 3957 !VerParts.second.getAsInteger(10, Minor) 3958 : VerParts.first.size() == Ver.size() || 3959 VerParts.second == "0")) { 3960 // Got a valid version number. 3961 if (Major == 3 && Minor <= 8) 3962 Opts.setClangABICompat(LangOptions::ClangABI::Ver3_8); 3963 else if (Major <= 4) 3964 Opts.setClangABICompat(LangOptions::ClangABI::Ver4); 3965 else if (Major <= 6) 3966 Opts.setClangABICompat(LangOptions::ClangABI::Ver6); 3967 else if (Major <= 7) 3968 Opts.setClangABICompat(LangOptions::ClangABI::Ver7); 3969 else if (Major <= 9) 3970 Opts.setClangABICompat(LangOptions::ClangABI::Ver9); 3971 else if (Major <= 11) 3972 Opts.setClangABICompat(LangOptions::ClangABI::Ver11); 3973 else if (Major <= 12) 3974 Opts.setClangABICompat(LangOptions::ClangABI::Ver12); 3975 else if (Major <= 14) 3976 Opts.setClangABICompat(LangOptions::ClangABI::Ver14); 3977 else if (Major <= 15) 3978 Opts.setClangABICompat(LangOptions::ClangABI::Ver15); 3979 } else if (Ver != "latest") { 3980 Diags.Report(diag::err_drv_invalid_value) 3981 << A->getAsString(Args) << A->getValue(); 3982 } 3983 } 3984 3985 if (Arg *A = Args.getLastArg(OPT_msign_return_address_EQ)) { 3986 StringRef SignScope = A->getValue(); 3987 3988 if (SignScope.equals_insensitive("none")) 3989 Opts.setSignReturnAddressScope( 3990 LangOptions::SignReturnAddressScopeKind::None); 3991 else if (SignScope.equals_insensitive("all")) 3992 Opts.setSignReturnAddressScope( 3993 LangOptions::SignReturnAddressScopeKind::All); 3994 else if (SignScope.equals_insensitive("non-leaf")) 3995 Opts.setSignReturnAddressScope( 3996 LangOptions::SignReturnAddressScopeKind::NonLeaf); 3997 else 3998 Diags.Report(diag::err_drv_invalid_value) 3999 << A->getAsString(Args) << SignScope; 4000 4001 if (Arg *A = Args.getLastArg(OPT_msign_return_address_key_EQ)) { 4002 StringRef SignKey = A->getValue(); 4003 if (!SignScope.empty() && !SignKey.empty()) { 4004 if (SignKey.equals_insensitive("a_key")) 4005 Opts.setSignReturnAddressKey( 4006 LangOptions::SignReturnAddressKeyKind::AKey); 4007 else if (SignKey.equals_insensitive("b_key")) 4008 Opts.setSignReturnAddressKey( 4009 LangOptions::SignReturnAddressKeyKind::BKey); 4010 else 4011 Diags.Report(diag::err_drv_invalid_value) 4012 << A->getAsString(Args) << SignKey; 4013 } 4014 } 4015 } 4016 4017 // The value can be empty, which indicates the system default should be used. 4018 StringRef CXXABI = Args.getLastArgValue(OPT_fcxx_abi_EQ); 4019 if (!CXXABI.empty()) { 4020 if (!TargetCXXABI::isABI(CXXABI)) { 4021 Diags.Report(diag::err_invalid_cxx_abi) << CXXABI; 4022 } else { 4023 auto Kind = TargetCXXABI::getKind(CXXABI); 4024 if (!TargetCXXABI::isSupportedCXXABI(T, Kind)) 4025 Diags.Report(diag::err_unsupported_cxx_abi) << CXXABI << T.str(); 4026 else 4027 Opts.CXXABI = Kind; 4028 } 4029 } 4030 4031 Opts.RelativeCXXABIVTables = 4032 Args.hasFlag(options::OPT_fexperimental_relative_cxx_abi_vtables, 4033 options::OPT_fno_experimental_relative_cxx_abi_vtables, 4034 TargetCXXABI::usesRelativeVTables(T)); 4035 4036 for (const auto &A : Args.getAllArgValues(OPT_fmacro_prefix_map_EQ)) { 4037 auto Split = StringRef(A).split('='); 4038 Opts.MacroPrefixMap.insert( 4039 {std::string(Split.first), std::string(Split.second)}); 4040 } 4041 4042 Opts.UseTargetPathSeparator = 4043 !Args.getLastArg(OPT_fno_file_reproducible) && 4044 (Args.getLastArg(OPT_ffile_compilation_dir_EQ) || 4045 Args.getLastArg(OPT_fmacro_prefix_map_EQ) || 4046 Args.getLastArg(OPT_ffile_reproducible)); 4047 4048 // Error if -mvscale-min is unbounded. 4049 if (Arg *A = Args.getLastArg(options::OPT_mvscale_min_EQ)) { 4050 unsigned VScaleMin; 4051 if (StringRef(A->getValue()).getAsInteger(10, VScaleMin) || VScaleMin == 0) 4052 Diags.Report(diag::err_cc1_unbounded_vscale_min); 4053 } 4054 4055 if (const Arg *A = Args.getLastArg(OPT_frandomize_layout_seed_file_EQ)) { 4056 std::ifstream SeedFile(A->getValue(0)); 4057 4058 if (!SeedFile.is_open()) 4059 Diags.Report(diag::err_drv_cannot_open_randomize_layout_seed_file) 4060 << A->getValue(0); 4061 4062 std::getline(SeedFile, Opts.RandstructSeed); 4063 } 4064 4065 if (const Arg *A = Args.getLastArg(OPT_frandomize_layout_seed_EQ)) 4066 Opts.RandstructSeed = A->getValue(0); 4067 4068 // Validate options for HLSL 4069 if (Opts.HLSL) { 4070 bool SupportedTarget = T.getArch() == llvm::Triple::dxil && 4071 T.getOS() == llvm::Triple::ShaderModel; 4072 if (!SupportedTarget) 4073 Diags.Report(diag::err_drv_hlsl_unsupported_target) << T.str(); 4074 } 4075 4076 return Diags.getNumErrors() == NumErrorsBefore; 4077 } 4078 4079 static bool isStrictlyPreprocessorAction(frontend::ActionKind Action) { 4080 switch (Action) { 4081 case frontend::ASTDeclList: 4082 case frontend::ASTDump: 4083 case frontend::ASTPrint: 4084 case frontend::ASTView: 4085 case frontend::EmitAssembly: 4086 case frontend::EmitBC: 4087 case frontend::EmitHTML: 4088 case frontend::EmitLLVM: 4089 case frontend::EmitLLVMOnly: 4090 case frontend::EmitCodeGenOnly: 4091 case frontend::EmitObj: 4092 case frontend::ExtractAPI: 4093 case frontend::FixIt: 4094 case frontend::GenerateModule: 4095 case frontend::GenerateModuleInterface: 4096 case frontend::GenerateHeaderUnit: 4097 case frontend::GeneratePCH: 4098 case frontend::GenerateInterfaceStubs: 4099 case frontend::ParseSyntaxOnly: 4100 case frontend::ModuleFileInfo: 4101 case frontend::VerifyPCH: 4102 case frontend::PluginAction: 4103 case frontend::RewriteObjC: 4104 case frontend::RewriteTest: 4105 case frontend::RunAnalysis: 4106 case frontend::TemplightDump: 4107 case frontend::MigrateSource: 4108 return false; 4109 4110 case frontend::DumpCompilerOptions: 4111 case frontend::DumpRawTokens: 4112 case frontend::DumpTokens: 4113 case frontend::InitOnly: 4114 case frontend::PrintPreamble: 4115 case frontend::PrintPreprocessedInput: 4116 case frontend::RewriteMacros: 4117 case frontend::RunPreprocessorOnly: 4118 case frontend::PrintDependencyDirectivesSourceMinimizerOutput: 4119 return true; 4120 } 4121 llvm_unreachable("invalid frontend action"); 4122 } 4123 4124 static void GeneratePreprocessorArgs(PreprocessorOptions &Opts, 4125 SmallVectorImpl<const char *> &Args, 4126 CompilerInvocation::StringAllocator SA, 4127 const LangOptions &LangOpts, 4128 const FrontendOptions &FrontendOpts, 4129 const CodeGenOptions &CodeGenOpts) { 4130 PreprocessorOptions *PreprocessorOpts = &Opts; 4131 4132 #define PREPROCESSOR_OPTION_WITH_MARSHALLING(...) \ 4133 GENERATE_OPTION_WITH_MARSHALLING(Args, SA, __VA_ARGS__) 4134 #include "clang/Driver/Options.inc" 4135 #undef PREPROCESSOR_OPTION_WITH_MARSHALLING 4136 4137 if (Opts.PCHWithHdrStop && !Opts.PCHWithHdrStopCreate) 4138 GenerateArg(Args, OPT_pch_through_hdrstop_use, SA); 4139 4140 for (const auto &D : Opts.DeserializedPCHDeclsToErrorOn) 4141 GenerateArg(Args, OPT_error_on_deserialized_pch_decl, D, SA); 4142 4143 if (Opts.PrecompiledPreambleBytes != std::make_pair(0u, false)) 4144 GenerateArg(Args, OPT_preamble_bytes_EQ, 4145 Twine(Opts.PrecompiledPreambleBytes.first) + "," + 4146 (Opts.PrecompiledPreambleBytes.second ? "1" : "0"), 4147 SA); 4148 4149 for (const auto &M : Opts.Macros) { 4150 // Don't generate __CET__ macro definitions. They are implied by the 4151 // -fcf-protection option that is generated elsewhere. 4152 if (M.first == "__CET__=1" && !M.second && 4153 !CodeGenOpts.CFProtectionReturn && CodeGenOpts.CFProtectionBranch) 4154 continue; 4155 if (M.first == "__CET__=2" && !M.second && CodeGenOpts.CFProtectionReturn && 4156 !CodeGenOpts.CFProtectionBranch) 4157 continue; 4158 if (M.first == "__CET__=3" && !M.second && CodeGenOpts.CFProtectionReturn && 4159 CodeGenOpts.CFProtectionBranch) 4160 continue; 4161 4162 GenerateArg(Args, M.second ? OPT_U : OPT_D, M.first, SA); 4163 } 4164 4165 for (const auto &I : Opts.Includes) { 4166 // Don't generate OpenCL includes. They are implied by other flags that are 4167 // generated elsewhere. 4168 if (LangOpts.OpenCL && LangOpts.IncludeDefaultHeader && 4169 ((LangOpts.DeclareOpenCLBuiltins && I == "opencl-c-base.h") || 4170 I == "opencl-c.h")) 4171 continue; 4172 // Don't generate HLSL includes. They are implied by other flags that are 4173 // generated elsewhere. 4174 if (LangOpts.HLSL && I == "hlsl.h") 4175 continue; 4176 4177 GenerateArg(Args, OPT_include, I, SA); 4178 } 4179 4180 for (const auto &CI : Opts.ChainedIncludes) 4181 GenerateArg(Args, OPT_chain_include, CI, SA); 4182 4183 for (const auto &RF : Opts.RemappedFiles) 4184 GenerateArg(Args, OPT_remap_file, RF.first + ";" + RF.second, SA); 4185 4186 if (Opts.SourceDateEpoch) 4187 GenerateArg(Args, OPT_source_date_epoch, Twine(*Opts.SourceDateEpoch), SA); 4188 4189 // Don't handle LexEditorPlaceholders. It is implied by the action that is 4190 // generated elsewhere. 4191 } 4192 4193 static bool ParsePreprocessorArgs(PreprocessorOptions &Opts, ArgList &Args, 4194 DiagnosticsEngine &Diags, 4195 frontend::ActionKind Action, 4196 const FrontendOptions &FrontendOpts) { 4197 unsigned NumErrorsBefore = Diags.getNumErrors(); 4198 4199 PreprocessorOptions *PreprocessorOpts = &Opts; 4200 4201 #define PREPROCESSOR_OPTION_WITH_MARSHALLING(...) \ 4202 PARSE_OPTION_WITH_MARSHALLING(Args, Diags, __VA_ARGS__) 4203 #include "clang/Driver/Options.inc" 4204 #undef PREPROCESSOR_OPTION_WITH_MARSHALLING 4205 4206 Opts.PCHWithHdrStop = Args.hasArg(OPT_pch_through_hdrstop_create) || 4207 Args.hasArg(OPT_pch_through_hdrstop_use); 4208 4209 for (const auto *A : Args.filtered(OPT_error_on_deserialized_pch_decl)) 4210 Opts.DeserializedPCHDeclsToErrorOn.insert(A->getValue()); 4211 4212 if (const Arg *A = Args.getLastArg(OPT_preamble_bytes_EQ)) { 4213 StringRef Value(A->getValue()); 4214 size_t Comma = Value.find(','); 4215 unsigned Bytes = 0; 4216 unsigned EndOfLine = 0; 4217 4218 if (Comma == StringRef::npos || 4219 Value.substr(0, Comma).getAsInteger(10, Bytes) || 4220 Value.substr(Comma + 1).getAsInteger(10, EndOfLine)) 4221 Diags.Report(diag::err_drv_preamble_format); 4222 else { 4223 Opts.PrecompiledPreambleBytes.first = Bytes; 4224 Opts.PrecompiledPreambleBytes.second = (EndOfLine != 0); 4225 } 4226 } 4227 4228 // Add the __CET__ macro if a CFProtection option is set. 4229 if (const Arg *A = Args.getLastArg(OPT_fcf_protection_EQ)) { 4230 StringRef Name = A->getValue(); 4231 if (Name == "branch") 4232 Opts.addMacroDef("__CET__=1"); 4233 else if (Name == "return") 4234 Opts.addMacroDef("__CET__=2"); 4235 else if (Name == "full") 4236 Opts.addMacroDef("__CET__=3"); 4237 } 4238 4239 // Add macros from the command line. 4240 for (const auto *A : Args.filtered(OPT_D, OPT_U)) { 4241 if (A->getOption().matches(OPT_D)) 4242 Opts.addMacroDef(A->getValue()); 4243 else 4244 Opts.addMacroUndef(A->getValue()); 4245 } 4246 4247 // Add the ordered list of -includes. 4248 for (const auto *A : Args.filtered(OPT_include)) 4249 Opts.Includes.emplace_back(A->getValue()); 4250 4251 for (const auto *A : Args.filtered(OPT_chain_include)) 4252 Opts.ChainedIncludes.emplace_back(A->getValue()); 4253 4254 for (const auto *A : Args.filtered(OPT_remap_file)) { 4255 std::pair<StringRef, StringRef> Split = StringRef(A->getValue()).split(';'); 4256 4257 if (Split.second.empty()) { 4258 Diags.Report(diag::err_drv_invalid_remap_file) << A->getAsString(Args); 4259 continue; 4260 } 4261 4262 Opts.addRemappedFile(Split.first, Split.second); 4263 } 4264 4265 if (const Arg *A = Args.getLastArg(OPT_source_date_epoch)) { 4266 StringRef Epoch = A->getValue(); 4267 // SOURCE_DATE_EPOCH, if specified, must be a non-negative decimal integer. 4268 // On time64 systems, pick 253402300799 (the UNIX timestamp of 4269 // 9999-12-31T23:59:59Z) as the upper bound. 4270 const uint64_t MaxTimestamp = 4271 std::min<uint64_t>(std::numeric_limits<time_t>::max(), 253402300799); 4272 uint64_t V; 4273 if (Epoch.getAsInteger(10, V) || V > MaxTimestamp) { 4274 Diags.Report(diag::err_fe_invalid_source_date_epoch) 4275 << Epoch << MaxTimestamp; 4276 } else { 4277 Opts.SourceDateEpoch = V; 4278 } 4279 } 4280 4281 // Always avoid lexing editor placeholders when we're just running the 4282 // preprocessor as we never want to emit the 4283 // "editor placeholder in source file" error in PP only mode. 4284 if (isStrictlyPreprocessorAction(Action)) 4285 Opts.LexEditorPlaceholders = false; 4286 4287 return Diags.getNumErrors() == NumErrorsBefore; 4288 } 4289 4290 static void GeneratePreprocessorOutputArgs( 4291 const PreprocessorOutputOptions &Opts, SmallVectorImpl<const char *> &Args, 4292 CompilerInvocation::StringAllocator SA, frontend::ActionKind Action) { 4293 const PreprocessorOutputOptions &PreprocessorOutputOpts = Opts; 4294 4295 #define PREPROCESSOR_OUTPUT_OPTION_WITH_MARSHALLING(...) \ 4296 GENERATE_OPTION_WITH_MARSHALLING(Args, SA, __VA_ARGS__) 4297 #include "clang/Driver/Options.inc" 4298 #undef PREPROCESSOR_OUTPUT_OPTION_WITH_MARSHALLING 4299 4300 bool Generate_dM = isStrictlyPreprocessorAction(Action) && !Opts.ShowCPP; 4301 if (Generate_dM) 4302 GenerateArg(Args, OPT_dM, SA); 4303 if (!Generate_dM && Opts.ShowMacros) 4304 GenerateArg(Args, OPT_dD, SA); 4305 if (Opts.DirectivesOnly) 4306 GenerateArg(Args, OPT_fdirectives_only, SA); 4307 } 4308 4309 static bool ParsePreprocessorOutputArgs(PreprocessorOutputOptions &Opts, 4310 ArgList &Args, DiagnosticsEngine &Diags, 4311 frontend::ActionKind Action) { 4312 unsigned NumErrorsBefore = Diags.getNumErrors(); 4313 4314 PreprocessorOutputOptions &PreprocessorOutputOpts = Opts; 4315 4316 #define PREPROCESSOR_OUTPUT_OPTION_WITH_MARSHALLING(...) \ 4317 PARSE_OPTION_WITH_MARSHALLING(Args, Diags, __VA_ARGS__) 4318 #include "clang/Driver/Options.inc" 4319 #undef PREPROCESSOR_OUTPUT_OPTION_WITH_MARSHALLING 4320 4321 Opts.ShowCPP = isStrictlyPreprocessorAction(Action) && !Args.hasArg(OPT_dM); 4322 Opts.ShowMacros = Args.hasArg(OPT_dM) || Args.hasArg(OPT_dD); 4323 Opts.DirectivesOnly = Args.hasArg(OPT_fdirectives_only); 4324 4325 return Diags.getNumErrors() == NumErrorsBefore; 4326 } 4327 4328 static void GenerateTargetArgs(const TargetOptions &Opts, 4329 SmallVectorImpl<const char *> &Args, 4330 CompilerInvocation::StringAllocator SA) { 4331 const TargetOptions *TargetOpts = &Opts; 4332 #define TARGET_OPTION_WITH_MARSHALLING(...) \ 4333 GENERATE_OPTION_WITH_MARSHALLING(Args, SA, __VA_ARGS__) 4334 #include "clang/Driver/Options.inc" 4335 #undef TARGET_OPTION_WITH_MARSHALLING 4336 4337 if (!Opts.SDKVersion.empty()) 4338 GenerateArg(Args, OPT_target_sdk_version_EQ, Opts.SDKVersion.getAsString(), 4339 SA); 4340 if (!Opts.DarwinTargetVariantSDKVersion.empty()) 4341 GenerateArg(Args, OPT_darwin_target_variant_sdk_version_EQ, 4342 Opts.DarwinTargetVariantSDKVersion.getAsString(), SA); 4343 } 4344 4345 static bool ParseTargetArgs(TargetOptions &Opts, ArgList &Args, 4346 DiagnosticsEngine &Diags) { 4347 unsigned NumErrorsBefore = Diags.getNumErrors(); 4348 4349 TargetOptions *TargetOpts = &Opts; 4350 4351 #define TARGET_OPTION_WITH_MARSHALLING(...) \ 4352 PARSE_OPTION_WITH_MARSHALLING(Args, Diags, __VA_ARGS__) 4353 #include "clang/Driver/Options.inc" 4354 #undef TARGET_OPTION_WITH_MARSHALLING 4355 4356 if (Arg *A = Args.getLastArg(options::OPT_target_sdk_version_EQ)) { 4357 llvm::VersionTuple Version; 4358 if (Version.tryParse(A->getValue())) 4359 Diags.Report(diag::err_drv_invalid_value) 4360 << A->getAsString(Args) << A->getValue(); 4361 else 4362 Opts.SDKVersion = Version; 4363 } 4364 if (Arg *A = 4365 Args.getLastArg(options::OPT_darwin_target_variant_sdk_version_EQ)) { 4366 llvm::VersionTuple Version; 4367 if (Version.tryParse(A->getValue())) 4368 Diags.Report(diag::err_drv_invalid_value) 4369 << A->getAsString(Args) << A->getValue(); 4370 else 4371 Opts.DarwinTargetVariantSDKVersion = Version; 4372 } 4373 4374 return Diags.getNumErrors() == NumErrorsBefore; 4375 } 4376 4377 bool CompilerInvocation::CreateFromArgsImpl( 4378 CompilerInvocation &Res, ArrayRef<const char *> CommandLineArgs, 4379 DiagnosticsEngine &Diags, const char *Argv0) { 4380 unsigned NumErrorsBefore = Diags.getNumErrors(); 4381 4382 // Parse the arguments. 4383 const OptTable &Opts = getDriverOptTable(); 4384 const unsigned IncludedFlagsBitmask = options::CC1Option; 4385 unsigned MissingArgIndex, MissingArgCount; 4386 InputArgList Args = Opts.ParseArgs(CommandLineArgs, MissingArgIndex, 4387 MissingArgCount, IncludedFlagsBitmask); 4388 LangOptions &LangOpts = *Res.getLangOpts(); 4389 4390 // Check for missing argument error. 4391 if (MissingArgCount) 4392 Diags.Report(diag::err_drv_missing_argument) 4393 << Args.getArgString(MissingArgIndex) << MissingArgCount; 4394 4395 // Issue errors on unknown arguments. 4396 for (const auto *A : Args.filtered(OPT_UNKNOWN)) { 4397 auto ArgString = A->getAsString(Args); 4398 std::string Nearest; 4399 if (Opts.findNearest(ArgString, Nearest, IncludedFlagsBitmask) > 1) 4400 Diags.Report(diag::err_drv_unknown_argument) << ArgString; 4401 else 4402 Diags.Report(diag::err_drv_unknown_argument_with_suggestion) 4403 << ArgString << Nearest; 4404 } 4405 4406 ParseFileSystemArgs(Res.getFileSystemOpts(), Args, Diags); 4407 ParseMigratorArgs(Res.getMigratorOpts(), Args, Diags); 4408 ParseAnalyzerArgs(*Res.getAnalyzerOpts(), Args, Diags); 4409 ParseDiagnosticArgs(Res.getDiagnosticOpts(), Args, &Diags, 4410 /*DefaultDiagColor=*/false); 4411 ParseFrontendArgs(Res.getFrontendOpts(), Args, Diags, LangOpts.IsHeaderFile); 4412 // FIXME: We shouldn't have to pass the DashX option around here 4413 InputKind DashX = Res.getFrontendOpts().DashX; 4414 ParseTargetArgs(Res.getTargetOpts(), Args, Diags); 4415 llvm::Triple T(Res.getTargetOpts().Triple); 4416 ParseHeaderSearchArgs(Res.getHeaderSearchOpts(), Args, Diags, 4417 Res.getFileSystemOpts().WorkingDir); 4418 4419 ParseLangArgs(LangOpts, Args, DashX, T, Res.getPreprocessorOpts().Includes, 4420 Diags); 4421 if (Res.getFrontendOpts().ProgramAction == frontend::RewriteObjC) 4422 LangOpts.ObjCExceptions = 1; 4423 4424 for (auto Warning : Res.getDiagnosticOpts().Warnings) { 4425 if (Warning == "misexpect" && 4426 !Diags.isIgnored(diag::warn_profile_data_misexpect, SourceLocation())) { 4427 Res.getCodeGenOpts().MisExpect = true; 4428 } 4429 } 4430 4431 if (LangOpts.CUDA) { 4432 // During CUDA device-side compilation, the aux triple is the 4433 // triple used for host compilation. 4434 if (LangOpts.CUDAIsDevice) 4435 Res.getTargetOpts().HostTriple = Res.getFrontendOpts().AuxTriple; 4436 } 4437 4438 // Set the triple of the host for OpenMP device compile. 4439 if (LangOpts.OpenMPIsTargetDevice) 4440 Res.getTargetOpts().HostTriple = Res.getFrontendOpts().AuxTriple; 4441 4442 ParseCodeGenArgs(Res.getCodeGenOpts(), Args, DashX, Diags, T, 4443 Res.getFrontendOpts().OutputFile, LangOpts); 4444 4445 // FIXME: Override value name discarding when asan or msan is used because the 4446 // backend passes depend on the name of the alloca in order to print out 4447 // names. 4448 Res.getCodeGenOpts().DiscardValueNames &= 4449 !LangOpts.Sanitize.has(SanitizerKind::Address) && 4450 !LangOpts.Sanitize.has(SanitizerKind::KernelAddress) && 4451 !LangOpts.Sanitize.has(SanitizerKind::Memory) && 4452 !LangOpts.Sanitize.has(SanitizerKind::KernelMemory); 4453 4454 ParsePreprocessorArgs(Res.getPreprocessorOpts(), Args, Diags, 4455 Res.getFrontendOpts().ProgramAction, 4456 Res.getFrontendOpts()); 4457 ParsePreprocessorOutputArgs(Res.getPreprocessorOutputOpts(), Args, Diags, 4458 Res.getFrontendOpts().ProgramAction); 4459 4460 ParseDependencyOutputArgs(Res.getDependencyOutputOpts(), Args, Diags, 4461 Res.getFrontendOpts().ProgramAction, 4462 Res.getPreprocessorOutputOpts().ShowLineMarkers); 4463 if (!Res.getDependencyOutputOpts().OutputFile.empty() && 4464 Res.getDependencyOutputOpts().Targets.empty()) 4465 Diags.Report(diag::err_fe_dependency_file_requires_MT); 4466 4467 // If sanitizer is enabled, disable OPT_ffine_grained_bitfield_accesses. 4468 if (Res.getCodeGenOpts().FineGrainedBitfieldAccesses && 4469 !Res.getLangOpts()->Sanitize.empty()) { 4470 Res.getCodeGenOpts().FineGrainedBitfieldAccesses = false; 4471 Diags.Report(diag::warn_drv_fine_grained_bitfield_accesses_ignored); 4472 } 4473 4474 // Store the command-line for using in the CodeView backend. 4475 if (Res.getCodeGenOpts().CodeViewCommandLine) { 4476 Res.getCodeGenOpts().Argv0 = Argv0; 4477 append_range(Res.getCodeGenOpts().CommandLineArgs, CommandLineArgs); 4478 } 4479 4480 // Set PGOOptions. Need to create a temporary VFS to read the profile 4481 // to determine the PGO type. 4482 if (!Res.getCodeGenOpts().ProfileInstrumentUsePath.empty()) { 4483 auto FS = 4484 createVFSFromOverlayFiles(Res.getHeaderSearchOpts().VFSOverlayFiles, 4485 Diags, llvm::vfs::getRealFileSystem()); 4486 setPGOUseInstrumentor(Res.getCodeGenOpts(), 4487 Res.getCodeGenOpts().ProfileInstrumentUsePath, *FS, 4488 Diags); 4489 } 4490 4491 FixupInvocation(Res, Diags, Args, DashX); 4492 4493 return Diags.getNumErrors() == NumErrorsBefore; 4494 } 4495 4496 bool CompilerInvocation::CreateFromArgs(CompilerInvocation &Invocation, 4497 ArrayRef<const char *> CommandLineArgs, 4498 DiagnosticsEngine &Diags, 4499 const char *Argv0) { 4500 CompilerInvocation DummyInvocation; 4501 4502 return RoundTrip( 4503 [](CompilerInvocation &Invocation, ArrayRef<const char *> CommandLineArgs, 4504 DiagnosticsEngine &Diags, const char *Argv0) { 4505 return CreateFromArgsImpl(Invocation, CommandLineArgs, Diags, Argv0); 4506 }, 4507 [](CompilerInvocation &Invocation, SmallVectorImpl<const char *> &Args, 4508 StringAllocator SA) { 4509 Args.push_back("-cc1"); 4510 Invocation.generateCC1CommandLine(Args, SA); 4511 }, 4512 Invocation, DummyInvocation, CommandLineArgs, Diags, Argv0); 4513 } 4514 4515 std::string CompilerInvocation::getModuleHash() const { 4516 // FIXME: Consider using SHA1 instead of MD5. 4517 llvm::HashBuilder<llvm::MD5, llvm::support::endianness::native> HBuilder; 4518 4519 // Note: For QoI reasons, the things we use as a hash here should all be 4520 // dumped via the -module-info flag. 4521 4522 // Start the signature with the compiler version. 4523 HBuilder.add(getClangFullRepositoryVersion()); 4524 4525 // Also include the serialization version, in case LLVM_APPEND_VC_REV is off 4526 // and getClangFullRepositoryVersion() doesn't include git revision. 4527 HBuilder.add(serialization::VERSION_MAJOR, serialization::VERSION_MINOR); 4528 4529 // Extend the signature with the language options 4530 #define LANGOPT(Name, Bits, Default, Description) HBuilder.add(LangOpts->Name); 4531 #define ENUM_LANGOPT(Name, Type, Bits, Default, Description) \ 4532 HBuilder.add(static_cast<unsigned>(LangOpts->get##Name())); 4533 #define BENIGN_LANGOPT(Name, Bits, Default, Description) 4534 #define BENIGN_ENUM_LANGOPT(Name, Type, Bits, Default, Description) 4535 #include "clang/Basic/LangOptions.def" 4536 4537 HBuilder.addRange(LangOpts->ModuleFeatures); 4538 4539 HBuilder.add(LangOpts->ObjCRuntime); 4540 HBuilder.addRange(LangOpts->CommentOpts.BlockCommandNames); 4541 4542 // Extend the signature with the target options. 4543 HBuilder.add(TargetOpts->Triple, TargetOpts->CPU, TargetOpts->TuneCPU, 4544 TargetOpts->ABI); 4545 HBuilder.addRange(TargetOpts->FeaturesAsWritten); 4546 4547 // Extend the signature with preprocessor options. 4548 const PreprocessorOptions &ppOpts = getPreprocessorOpts(); 4549 HBuilder.add(ppOpts.UsePredefines, ppOpts.DetailedRecord); 4550 4551 const HeaderSearchOptions &hsOpts = getHeaderSearchOpts(); 4552 for (const auto &Macro : getPreprocessorOpts().Macros) { 4553 // If we're supposed to ignore this macro for the purposes of modules, 4554 // don't put it into the hash. 4555 if (!hsOpts.ModulesIgnoreMacros.empty()) { 4556 // Check whether we're ignoring this macro. 4557 StringRef MacroDef = Macro.first; 4558 if (hsOpts.ModulesIgnoreMacros.count( 4559 llvm::CachedHashString(MacroDef.split('=').first))) 4560 continue; 4561 } 4562 4563 HBuilder.add(Macro); 4564 } 4565 4566 // Extend the signature with the sysroot and other header search options. 4567 HBuilder.add(hsOpts.Sysroot, hsOpts.ModuleFormat, hsOpts.UseDebugInfo, 4568 hsOpts.UseBuiltinIncludes, hsOpts.UseStandardSystemIncludes, 4569 hsOpts.UseStandardCXXIncludes, hsOpts.UseLibcxx, 4570 hsOpts.ModulesValidateDiagnosticOptions); 4571 HBuilder.add(hsOpts.ResourceDir); 4572 4573 if (hsOpts.ModulesStrictContextHash) { 4574 HBuilder.addRange(hsOpts.SystemHeaderPrefixes); 4575 HBuilder.addRange(hsOpts.UserEntries); 4576 4577 const DiagnosticOptions &diagOpts = getDiagnosticOpts(); 4578 #define DIAGOPT(Name, Bits, Default) HBuilder.add(diagOpts.Name); 4579 #define ENUM_DIAGOPT(Name, Type, Bits, Default) \ 4580 HBuilder.add(diagOpts.get##Name()); 4581 #include "clang/Basic/DiagnosticOptions.def" 4582 #undef DIAGOPT 4583 #undef ENUM_DIAGOPT 4584 } 4585 4586 // Extend the signature with the user build path. 4587 HBuilder.add(hsOpts.ModuleUserBuildPath); 4588 4589 // Extend the signature with the module file extensions. 4590 for (const auto &ext : getFrontendOpts().ModuleFileExtensions) 4591 ext->hashExtension(HBuilder); 4592 4593 // When compiling with -gmodules, also hash -fdebug-prefix-map as it 4594 // affects the debug info in the PCM. 4595 if (getCodeGenOpts().DebugTypeExtRefs) 4596 HBuilder.addRange(getCodeGenOpts().DebugPrefixMap); 4597 4598 // Extend the signature with the enabled sanitizers, if at least one is 4599 // enabled. Sanitizers which cannot affect AST generation aren't hashed. 4600 SanitizerSet SanHash = LangOpts->Sanitize; 4601 SanHash.clear(getPPTransparentSanitizers()); 4602 if (!SanHash.empty()) 4603 HBuilder.add(SanHash.Mask); 4604 4605 llvm::MD5::MD5Result Result; 4606 HBuilder.getHasher().final(Result); 4607 uint64_t Hash = Result.high() ^ Result.low(); 4608 return toString(llvm::APInt(64, Hash), 36, /*Signed=*/false); 4609 } 4610 4611 void CompilerInvocation::generateCC1CommandLine( 4612 SmallVectorImpl<const char *> &Args, StringAllocator SA) const { 4613 llvm::Triple T(TargetOpts->Triple); 4614 4615 GenerateFileSystemArgs(FileSystemOpts, Args, SA); 4616 GenerateMigratorArgs(MigratorOpts, Args, SA); 4617 GenerateAnalyzerArgs(*AnalyzerOpts, Args, SA); 4618 GenerateDiagnosticArgs(*DiagnosticOpts, Args, SA, false); 4619 GenerateFrontendArgs(FrontendOpts, Args, SA, LangOpts->IsHeaderFile); 4620 GenerateTargetArgs(*TargetOpts, Args, SA); 4621 GenerateHeaderSearchArgs(*HeaderSearchOpts, Args, SA); 4622 GenerateLangArgs(*LangOpts, Args, SA, T, FrontendOpts.DashX); 4623 GenerateCodeGenArgs(CodeGenOpts, Args, SA, T, FrontendOpts.OutputFile, 4624 &*LangOpts); 4625 GeneratePreprocessorArgs(*PreprocessorOpts, Args, SA, *LangOpts, FrontendOpts, 4626 CodeGenOpts); 4627 GeneratePreprocessorOutputArgs(PreprocessorOutputOpts, Args, SA, 4628 FrontendOpts.ProgramAction); 4629 GenerateDependencyOutputArgs(DependencyOutputOpts, Args, SA); 4630 } 4631 4632 std::vector<std::string> CompilerInvocation::getCC1CommandLine() const { 4633 // Set up string allocator. 4634 llvm::BumpPtrAllocator Alloc; 4635 llvm::StringSaver Strings(Alloc); 4636 auto SA = [&Strings](const Twine &Arg) { return Strings.save(Arg).data(); }; 4637 4638 // Synthesize full command line from the CompilerInvocation, including "-cc1". 4639 SmallVector<const char *, 32> Args{"-cc1"}; 4640 generateCC1CommandLine(Args, SA); 4641 4642 // Convert arguments to the return type. 4643 return std::vector<std::string>{Args.begin(), Args.end()}; 4644 } 4645 4646 void CompilerInvocation::resetNonModularOptions() { 4647 getLangOpts()->resetNonModularOptions(); 4648 getPreprocessorOpts().resetNonModularOptions(); 4649 } 4650 4651 void CompilerInvocation::clearImplicitModuleBuildOptions() { 4652 getLangOpts()->ImplicitModules = false; 4653 getHeaderSearchOpts().ImplicitModuleMaps = false; 4654 getHeaderSearchOpts().ModuleCachePath.clear(); 4655 getHeaderSearchOpts().ModulesValidateOncePerBuildSession = false; 4656 getHeaderSearchOpts().BuildSessionTimestamp = 0; 4657 // The specific values we canonicalize to for pruning don't affect behaviour, 4658 /// so use the default values so they may be dropped from the command-line. 4659 getHeaderSearchOpts().ModuleCachePruneInterval = 7 * 24 * 60 * 60; 4660 getHeaderSearchOpts().ModuleCachePruneAfter = 31 * 24 * 60 * 60; 4661 } 4662 4663 IntrusiveRefCntPtr<llvm::vfs::FileSystem> 4664 clang::createVFSFromCompilerInvocation(const CompilerInvocation &CI, 4665 DiagnosticsEngine &Diags) { 4666 return createVFSFromCompilerInvocation(CI, Diags, 4667 llvm::vfs::getRealFileSystem()); 4668 } 4669 4670 IntrusiveRefCntPtr<llvm::vfs::FileSystem> 4671 clang::createVFSFromCompilerInvocation( 4672 const CompilerInvocation &CI, DiagnosticsEngine &Diags, 4673 IntrusiveRefCntPtr<llvm::vfs::FileSystem> BaseFS) { 4674 return createVFSFromOverlayFiles(CI.getHeaderSearchOpts().VFSOverlayFiles, 4675 Diags, std::move(BaseFS)); 4676 } 4677 4678 IntrusiveRefCntPtr<llvm::vfs::FileSystem> clang::createVFSFromOverlayFiles( 4679 ArrayRef<std::string> VFSOverlayFiles, DiagnosticsEngine &Diags, 4680 IntrusiveRefCntPtr<llvm::vfs::FileSystem> BaseFS) { 4681 if (VFSOverlayFiles.empty()) 4682 return BaseFS; 4683 4684 IntrusiveRefCntPtr<llvm::vfs::FileSystem> Result = BaseFS; 4685 // earlier vfs files are on the bottom 4686 for (const auto &File : VFSOverlayFiles) { 4687 llvm::ErrorOr<std::unique_ptr<llvm::MemoryBuffer>> Buffer = 4688 Result->getBufferForFile(File); 4689 if (!Buffer) { 4690 Diags.Report(diag::err_missing_vfs_overlay_file) << File; 4691 continue; 4692 } 4693 4694 IntrusiveRefCntPtr<llvm::vfs::FileSystem> FS = llvm::vfs::getVFSFromYAML( 4695 std::move(Buffer.get()), /*DiagHandler*/ nullptr, File, 4696 /*DiagContext*/ nullptr, Result); 4697 if (!FS) { 4698 Diags.Report(diag::err_invalid_vfs_overlay) << File; 4699 continue; 4700 } 4701 4702 Result = FS; 4703 } 4704 return Result; 4705 } 4706