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