1//===- CompilerInvocation.cpp ---------------------------------------------===// 2// 3// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 4// See https://llvm.org/LICENSE.txt for license information. 5// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 6// 7//===----------------------------------------------------------------------===// 8 9#include "clang/Frontend/CompilerInvocation.h" 10#include "TestModuleFileExtension.h" 11#include "clang/Basic/Builtins.h" 12#include "clang/Basic/CharInfo.h" 13#include "clang/Basic/CodeGenOptions.h" 14#include "clang/Basic/CommentOptions.h" 15#include "clang/Basic/DebugInfoOptions.h" 16#include "clang/Basic/Diagnostic.h" 17#include "clang/Basic/DiagnosticDriver.h" 18#include "clang/Basic/DiagnosticOptions.h" 19#include "clang/Basic/FileSystemOptions.h" 20#include "clang/Basic/LLVM.h" 21#include "clang/Basic/LangOptions.h" 22#include "clang/Basic/LangStandard.h" 23#include "clang/Basic/ObjCRuntime.h" 24#include "clang/Basic/Sanitizers.h" 25#include "clang/Basic/SourceLocation.h" 26#include "clang/Basic/TargetOptions.h" 27#include "clang/Basic/Version.h" 28#include "clang/Basic/Visibility.h" 29#include "clang/Basic/XRayInstr.h" 30#include "clang/Config/config.h" 31#include "clang/Driver/Driver.h" 32#include "clang/Driver/DriverDiagnostic.h" 33#include "clang/Driver/Options.h" 34#include "clang/Frontend/CommandLineSourceLoc.h" 35#include "clang/Frontend/DependencyOutputOptions.h" 36#include "clang/Frontend/FrontendDiagnostic.h" 37#include "clang/Frontend/FrontendOptions.h" 38#include "clang/Frontend/FrontendPluginRegistry.h" 39#include "clang/Frontend/MigratorOptions.h" 40#include "clang/Frontend/PreprocessorOutputOptions.h" 41#include "clang/Frontend/TextDiagnosticBuffer.h" 42#include "clang/Frontend/Utils.h" 43#include "clang/Lex/HeaderSearchOptions.h" 44#include "clang/Lex/PreprocessorOptions.h" 45#include "clang/Sema/CodeCompleteOptions.h" 46#include "clang/Serialization/ASTBitCodes.h" 47#include "clang/Serialization/ModuleFileExtension.h" 48#include "clang/StaticAnalyzer/Core/AnalyzerOptions.h" 49#include "llvm/ADT/APInt.h" 50#include "llvm/ADT/ArrayRef.h" 51#include "llvm/ADT/CachedHashString.h" 52#include "llvm/ADT/DenseSet.h" 53#include "llvm/ADT/FloatingPointMode.h" 54#include "llvm/ADT/Hashing.h" 55#include "llvm/ADT/STLExtras.h" 56#include "llvm/ADT/SmallString.h" 57#include "llvm/ADT/SmallVector.h" 58#include "llvm/ADT/StringRef.h" 59#include "llvm/ADT/StringSwitch.h" 60#include "llvm/ADT/Triple.h" 61#include "llvm/ADT/Twine.h" 62#include "llvm/Config/llvm-config.h" 63#include "llvm/IR/DebugInfoMetadata.h" 64#include "llvm/Linker/Linker.h" 65#include "llvm/MC/MCTargetOptions.h" 66#include "llvm/Option/Arg.h" 67#include "llvm/Option/ArgList.h" 68#include "llvm/Option/OptSpecifier.h" 69#include "llvm/Option/OptTable.h" 70#include "llvm/Option/Option.h" 71#include "llvm/ProfileData/InstrProfReader.h" 72#include "llvm/Remarks/HotnessThresholdParser.h" 73#include "llvm/Support/CodeGen.h" 74#include "llvm/Support/Compiler.h" 75#include "llvm/Support/Error.h" 76#include "llvm/Support/ErrorHandling.h" 77#include "llvm/Support/ErrorOr.h" 78#include "llvm/Support/FileSystem.h" 79#include "llvm/Support/HashBuilder.h" 80#include "llvm/Support/Host.h" 81#include "llvm/Support/MathExtras.h" 82#include "llvm/Support/MemoryBuffer.h" 83#include "llvm/Support/Path.h" 84#include "llvm/Support/Process.h" 85#include "llvm/Support/Regex.h" 86#include "llvm/Support/VersionTuple.h" 87#include "llvm/Support/VirtualFileSystem.h" 88#include "llvm/Support/raw_ostream.h" 89#include "llvm/Target/TargetOptions.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 106using namespace clang; 107using namespace driver; 108using namespace options; 109using 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) 117static 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 129CompilerInvocationRefBase::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 136CompilerInvocationRefBase::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 145CompilerInvocationRefBase::CompilerInvocationRefBase( 146 CompilerInvocationRefBase &&X) = default; 147 148CompilerInvocationRefBase & 149CompilerInvocationRefBase::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 159CompilerInvocationRefBase & 160CompilerInvocationRefBase::operator=(CompilerInvocationRefBase &&X) = default; 161 162CompilerInvocationRefBase::~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 172static 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 181static 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. 194static 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 201template <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 205template <typename T, 206 std::enable_if_t<!is_uint64_t_convertible<T>(), bool> = false> 207static 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 216template <typename T, 217 std::enable_if_t<is_uint64_t_convertible<T>(), bool> = false> 218static auto makeFlagToValueNormalizer(T Value) { 219 return makeFlagToValueNormalizer(uint64_t(Value)); 220} 221 222static 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 234static 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 243static 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 265template <typename T> 266static void 267denormalizeString(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 273static std::optional<SimpleEnumValue> 274findValueTableByName(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 282static std::optional<SimpleEnumValue> 283findValueTableByValue(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 291static 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 311static 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 327template <typename T> 328static 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 337static 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 347template <typename IntTy> 348static 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 363static std::optional<std::vector<std::string>> 364normalizeStringVector(OptSpecifier Opt, int, const ArgList &Args, 365 DiagnosticsEngine &) { 366 return Args.getAllArgValues(Opt); 367} 368 369static 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 401static 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 411template <typename T, typename U> 412static T mergeForwardValue(T KeyPath, U Value) { 413 return static_cast<T>(Value); 414} 415 416template <typename T, typename U> static T mergeMaskValue(T KeyPath, U Value) { 417 return KeyPath | Value; 418} 419 420template <typename T> static T extractForwardValue(T KeyPath) { 421 return KeyPath; 422} 423 424template <typename T, typename U, U Value> 425static 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, ID, FLAGS, PARAM, SHOULD_PARSE, KEYPATH, DEFAULT_VALUE, \ 431 IMPLIED_CHECK, IMPLIED_VALUE, NORMALIZER, MERGER, TABLE_INDEX) \ 432 if ((FLAGS)&options::CC1Option) { \ 433 KEYPATH = MERGER(KEYPATH, DEFAULT_VALUE); \ 434 if (IMPLIED_CHECK) \ 435 KEYPATH = MERGER(KEYPATH, IMPLIED_VALUE); \ 436 if (SHOULD_PARSE) \ 437 if (auto MaybeValue = NORMALIZER(OPT_##ID, TABLE_INDEX, ARGS, DIAGS)) \ 438 KEYPATH = \ 439 MERGER(KEYPATH, static_cast<decltype(KEYPATH)>(*MaybeValue)); \ 440 } 441 442// Capture the extracted value as a lambda argument to avoid potential issues 443// with lifetime extension of the reference. 444#define GENERATE_OPTION_WITH_MARSHALLING( \ 445 ARGS, STRING_ALLOCATOR, KIND, FLAGS, SPELLING, ALWAYS_EMIT, KEYPATH, \ 446 DEFAULT_VALUE, IMPLIED_CHECK, IMPLIED_VALUE, DENORMALIZER, EXTRACTOR, \ 447 TABLE_INDEX) \ 448 if ((FLAGS)&options::CC1Option) { \ 449 [&](const auto &Extracted) { \ 450 if (ALWAYS_EMIT || \ 451 (Extracted != \ 452 static_cast<decltype(KEYPATH)>((IMPLIED_CHECK) ? (IMPLIED_VALUE) \ 453 : (DEFAULT_VALUE)))) \ 454 DENORMALIZER(ARGS, SPELLING, STRING_ALLOCATOR, Option::KIND##Class, \ 455 TABLE_INDEX, Extracted); \ 456 }(EXTRACTOR(KEYPATH)); \ 457 } 458 459static StringRef GetInputKindName(InputKind IK); 460 461static bool FixupInvocation(CompilerInvocation &Invocation, 462 DiagnosticsEngine &Diags, const ArgList &Args, 463 InputKind IK) { 464 unsigned NumErrorsBefore = Diags.getNumErrors(); 465 466 LangOptions &LangOpts = *Invocation.getLangOpts(); 467 CodeGenOptions &CodeGenOpts = Invocation.getCodeGenOpts(); 468 TargetOptions &TargetOpts = Invocation.getTargetOpts(); 469 FrontendOptions &FrontendOpts = Invocation.getFrontendOpts(); 470 CodeGenOpts.XRayInstrumentFunctions = LangOpts.XRayInstrument; 471 CodeGenOpts.XRayAlwaysEmitCustomEvents = LangOpts.XRayAlwaysEmitCustomEvents; 472 CodeGenOpts.XRayAlwaysEmitTypedEvents = LangOpts.XRayAlwaysEmitTypedEvents; 473 CodeGenOpts.DisableFree = FrontendOpts.DisableFree; 474 FrontendOpts.GenerateGlobalModuleIndex = FrontendOpts.UseGlobalModuleIndex; 475 if (FrontendOpts.ShowStats) 476 CodeGenOpts.ClearASTBeforeBackend = false; 477 LangOpts.SanitizeCoverage = CodeGenOpts.hasSanitizeCoverage(); 478 LangOpts.ForceEmitVTables = CodeGenOpts.ForceEmitVTables; 479 LangOpts.SpeculativeLoadHardening = CodeGenOpts.SpeculativeLoadHardening; 480 LangOpts.CurrentModule = LangOpts.ModuleName; 481 482 llvm::Triple T(TargetOpts.Triple); 483 llvm::Triple::ArchType Arch = T.getArch(); 484 485 CodeGenOpts.CodeModel = TargetOpts.CodeModel; 486 487 if (LangOpts.getExceptionHandling() != 488 LangOptions::ExceptionHandlingKind::None && 489 T.isWindowsMSVCEnvironment()) 490 Diags.Report(diag::err_fe_invalid_exception_model) 491 << static_cast<unsigned>(LangOpts.getExceptionHandling()) << T.str(); 492 493 if (LangOpts.AppleKext && !LangOpts.CPlusPlus) 494 Diags.Report(diag::warn_c_kext); 495 496 if (LangOpts.NewAlignOverride && 497 !llvm::isPowerOf2_32(LangOpts.NewAlignOverride)) { 498 Arg *A = Args.getLastArg(OPT_fnew_alignment_EQ); 499 Diags.Report(diag::err_fe_invalid_alignment) 500 << A->getAsString(Args) << A->getValue(); 501 LangOpts.NewAlignOverride = 0; 502 } 503 504 // Prevent the user from specifying both -fsycl-is-device and -fsycl-is-host. 505 if (LangOpts.SYCLIsDevice && LangOpts.SYCLIsHost) 506 Diags.Report(diag::err_drv_argument_not_allowed_with) << "-fsycl-is-device" 507 << "-fsycl-is-host"; 508 509 if (Args.hasArg(OPT_fgnu89_inline) && LangOpts.CPlusPlus) 510 Diags.Report(diag::err_drv_argument_not_allowed_with) 511 << "-fgnu89-inline" << GetInputKindName(IK); 512 513 if (Args.hasArg(OPT_hlsl_entrypoint) && !LangOpts.HLSL) 514 Diags.Report(diag::err_drv_argument_not_allowed_with) 515 << "-hlsl-entry" << GetInputKindName(IK); 516 517 if (Args.hasArg(OPT_fgpu_allow_device_init) && !LangOpts.HIP) 518 Diags.Report(diag::warn_ignored_hip_only_option) 519 << Args.getLastArg(OPT_fgpu_allow_device_init)->getAsString(Args); 520 521 if (Args.hasArg(OPT_gpu_max_threads_per_block_EQ) && !LangOpts.HIP) 522 Diags.Report(diag::warn_ignored_hip_only_option) 523 << Args.getLastArg(OPT_gpu_max_threads_per_block_EQ)->getAsString(Args); 524 525 // When these options are used, the compiler is allowed to apply 526 // optimizations that may affect the final result. For example 527 // (x+y)+z is transformed to x+(y+z) but may not give the same 528 // final result; it's not value safe. 529 // Another example can be to simplify x/x to 1.0 but x could be 0.0, INF 530 // or NaN. Final result may then differ. An error is issued when the eval 531 // method is set with one of these options. 532 if (Args.hasArg(OPT_ffp_eval_method_EQ)) { 533 if (LangOpts.ApproxFunc) 534 Diags.Report(diag::err_incompatible_fp_eval_method_options) << 0; 535 if (LangOpts.AllowFPReassoc) 536 Diags.Report(diag::err_incompatible_fp_eval_method_options) << 1; 537 if (LangOpts.AllowRecip) 538 Diags.Report(diag::err_incompatible_fp_eval_method_options) << 2; 539 } 540 541 // -cl-strict-aliasing needs to emit diagnostic in the case where CL > 1.0. 542 // This option should be deprecated for CL > 1.0 because 543 // this option was added for compatibility with OpenCL 1.0. 544 if (Args.getLastArg(OPT_cl_strict_aliasing) && 545 (LangOpts.getOpenCLCompatibleVersion() > 100)) 546 Diags.Report(diag::warn_option_invalid_ocl_version) 547 << LangOpts.getOpenCLVersionString() 548 << Args.getLastArg(OPT_cl_strict_aliasing)->getAsString(Args); 549 550 if (Arg *A = Args.getLastArg(OPT_fdefault_calling_conv_EQ)) { 551 auto DefaultCC = LangOpts.getDefaultCallingConv(); 552 553 bool emitError = (DefaultCC == LangOptions::DCC_FastCall || 554 DefaultCC == LangOptions::DCC_StdCall) && 555 Arch != llvm::Triple::x86; 556 emitError |= (DefaultCC == LangOptions::DCC_VectorCall || 557 DefaultCC == LangOptions::DCC_RegCall) && 558 !T.isX86(); 559 if (emitError) 560 Diags.Report(diag::err_drv_argument_not_allowed_with) 561 << A->getSpelling() << T.getTriple(); 562 } 563 564 return Diags.getNumErrors() == NumErrorsBefore; 565} 566 567//===----------------------------------------------------------------------===// 568// Deserialization (from args) 569//===----------------------------------------------------------------------===// 570 571static unsigned getOptimizationLevel(ArgList &Args, InputKind IK, 572 DiagnosticsEngine &Diags) { 573 unsigned DefaultOpt = llvm::CodeGenOpt::None; 574 if ((IK.getLanguage() == Language::OpenCL || 575 IK.getLanguage() == Language::OpenCLCXX) && 576 !Args.hasArg(OPT_cl_opt_disable)) 577 DefaultOpt = llvm::CodeGenOpt::Default; 578 579 if (Arg *A = Args.getLastArg(options::OPT_O_Group)) { 580 if (A->getOption().matches(options::OPT_O0)) 581 return llvm::CodeGenOpt::None; 582 583 if (A->getOption().matches(options::OPT_Ofast)) 584 return llvm::CodeGenOpt::Aggressive; 585 586 assert(A->getOption().matches(options::OPT_O)); 587 588 StringRef S(A->getValue()); 589 if (S == "s" || S == "z") 590 return llvm::CodeGenOpt::Default; 591 592 if (S == "g") 593 return llvm::CodeGenOpt::Less; 594 595 return getLastArgIntValue(Args, OPT_O, DefaultOpt, Diags); 596 } 597 598 return DefaultOpt; 599} 600 601static unsigned getOptimizationLevelSize(ArgList &Args) { 602 if (Arg *A = Args.getLastArg(options::OPT_O_Group)) { 603 if (A->getOption().matches(options::OPT_O)) { 604 switch (A->getValue()[0]) { 605 default: 606 return 0; 607 case 's': 608 return 1; 609 case 'z': 610 return 2; 611 } 612 } 613 } 614 return 0; 615} 616 617static void GenerateArg(SmallVectorImpl<const char *> &Args, 618 llvm::opt::OptSpecifier OptSpecifier, 619 CompilerInvocation::StringAllocator SA) { 620 Option Opt = getDriverOptTable().getOption(OptSpecifier); 621 denormalizeSimpleFlag(Args, SA(Opt.getPrefix() + Opt.getName()), SA, 622 Option::OptionClass::FlagClass, 0); 623} 624 625static void GenerateArg(SmallVectorImpl<const char *> &Args, 626 llvm::opt::OptSpecifier OptSpecifier, 627 const Twine &Value, 628 CompilerInvocation::StringAllocator SA) { 629 Option Opt = getDriverOptTable().getOption(OptSpecifier); 630 denormalizeString(Args, SA(Opt.getPrefix() + Opt.getName()), SA, 631 Opt.getKind(), 0, Value); 632} 633 634// Parse command line arguments into CompilerInvocation. 635using ParseFn = 636 llvm::function_ref<bool(CompilerInvocation &, ArrayRef<const char *>, 637 DiagnosticsEngine &, const char *)>; 638 639// Generate command line arguments from CompilerInvocation. 640using GenerateFn = llvm::function_ref<void( 641 CompilerInvocation &, SmallVectorImpl<const char *> &, 642 CompilerInvocation::StringAllocator)>; 643 644// May perform round-trip of command line arguments. By default, the round-trip 645// is enabled in assert builds. This can be overwritten at run-time via the 646// "-round-trip-args" and "-no-round-trip-args" command line flags. 647// During round-trip, the command line arguments are parsed into a dummy 648// instance of CompilerInvocation which is used to generate the command line 649// arguments again. The real CompilerInvocation instance is then created by 650// parsing the generated arguments, not the original ones. 651static bool RoundTrip(ParseFn Parse, GenerateFn Generate, 652 CompilerInvocation &RealInvocation, 653 CompilerInvocation &DummyInvocation, 654 ArrayRef<const char *> CommandLineArgs, 655 DiagnosticsEngine &Diags, const char *Argv0) { 656#ifndef NDEBUG 657 bool DoRoundTripDefault = true; 658#else 659 bool DoRoundTripDefault = false; 660#endif 661 662 bool DoRoundTrip = DoRoundTripDefault; 663 for (const auto *Arg : CommandLineArgs) { 664 if (Arg == StringRef("-round-trip-args")) 665 DoRoundTrip = true; 666 if (Arg == StringRef("-no-round-trip-args")) 667 DoRoundTrip = false; 668 } 669 670 // If round-trip was not requested, simply run the parser with the real 671 // invocation diagnostics. 672 if (!DoRoundTrip) 673 return Parse(RealInvocation, CommandLineArgs, Diags, Argv0); 674 675 // Serializes quoted (and potentially escaped) arguments. 676 auto SerializeArgs = [](ArrayRef<const char *> Args) { 677 std::string Buffer; 678 llvm::raw_string_ostream OS(Buffer); 679 for (const char *Arg : Args) { 680 llvm::sys::printArg(OS, Arg, /*Quote=*/true); 681 OS << ' '; 682 } 683 OS.flush(); 684 return Buffer; 685 }; 686 687 // Setup a dummy DiagnosticsEngine. 688 DiagnosticsEngine DummyDiags(new DiagnosticIDs(), new DiagnosticOptions()); 689 DummyDiags.setClient(new TextDiagnosticBuffer()); 690 691 // Run the first parse on the original arguments with the dummy invocation and 692 // diagnostics. 693 if (!Parse(DummyInvocation, CommandLineArgs, DummyDiags, Argv0) || 694 DummyDiags.getNumWarnings() != 0) { 695 // If the first parse did not succeed, it must be user mistake (invalid 696 // command line arguments). We won't be able to generate arguments that 697 // would reproduce the same result. Let's fail again with the real 698 // invocation and diagnostics, so all side-effects of parsing are visible. 699 unsigned NumWarningsBefore = Diags.getNumWarnings(); 700 auto Success = Parse(RealInvocation, CommandLineArgs, Diags, Argv0); 701 if (!Success || Diags.getNumWarnings() != NumWarningsBefore) 702 return Success; 703 704 // Parse with original options and diagnostics succeeded even though it 705 // shouldn't have. Something is off. 706 Diags.Report(diag::err_cc1_round_trip_fail_then_ok); 707 Diags.Report(diag::note_cc1_round_trip_original) 708 << SerializeArgs(CommandLineArgs); 709 return false; 710 } 711 712 // Setup string allocator. 713 llvm::BumpPtrAllocator Alloc; 714 llvm::StringSaver StringPool(Alloc); 715 auto SA = [&StringPool](const Twine &Arg) { 716 return StringPool.save(Arg).data(); 717 }; 718 719 // Generate arguments from the dummy invocation. If Generate is the 720 // inverse of Parse, the newly generated arguments must have the same 721 // semantics as the original. 722 SmallVector<const char *> GeneratedArgs1; 723 Generate(DummyInvocation, GeneratedArgs1, SA); 724 725 // Run the second parse, now on the generated arguments, and with the real 726 // invocation and diagnostics. The result is what we will end up using for the 727 // rest of compilation, so if Generate is not inverse of Parse, something down 728 // the line will break. 729 bool Success2 = Parse(RealInvocation, GeneratedArgs1, Diags, Argv0); 730 731 // The first parse on original arguments succeeded, but second parse of 732 // generated arguments failed. Something must be wrong with the generator. 733 if (!Success2) { 734 Diags.Report(diag::err_cc1_round_trip_ok_then_fail); 735 Diags.Report(diag::note_cc1_round_trip_generated) 736 << 1 << SerializeArgs(GeneratedArgs1); 737 return false; 738 } 739 740 // Generate arguments again, this time from the options we will end up using 741 // for the rest of the compilation. 742 SmallVector<const char *> GeneratedArgs2; 743 Generate(RealInvocation, GeneratedArgs2, SA); 744 745 // Compares two lists of generated arguments. 746 auto Equal = [](const ArrayRef<const char *> A, 747 const ArrayRef<const char *> B) { 748 return std::equal(A.begin(), A.end(), B.begin(), B.end(), 749 [](const char *AElem, const char *BElem) { 750 return StringRef(AElem) == StringRef(BElem); 751 }); 752 }; 753 754 // If we generated different arguments from what we assume are two 755 // semantically equivalent CompilerInvocations, the Generate function may 756 // be non-deterministic. 757 if (!Equal(GeneratedArgs1, GeneratedArgs2)) { 758 Diags.Report(diag::err_cc1_round_trip_mismatch); 759 Diags.Report(diag::note_cc1_round_trip_generated) 760 << 1 << SerializeArgs(GeneratedArgs1); 761 Diags.Report(diag::note_cc1_round_trip_generated) 762 << 2 << SerializeArgs(GeneratedArgs2); 763 return false; 764 } 765 766 Diags.Report(diag::remark_cc1_round_trip_generated) 767 << 1 << SerializeArgs(GeneratedArgs1); 768 Diags.Report(diag::remark_cc1_round_trip_generated) 769 << 2 << SerializeArgs(GeneratedArgs2); 770 771 return Success2; 772} 773 774static void addDiagnosticArgs(ArgList &Args, OptSpecifier Group, 775 OptSpecifier GroupWithValue, 776 std::vector<std::string> &Diagnostics) { 777 for (auto *A : Args.filtered(Group)) { 778 if (A->getOption().getKind() == Option::FlagClass) { 779 // The argument is a pure flag (such as OPT_Wall or OPT_Wdeprecated). Add 780 // its name (minus the "W" or "R" at the beginning) to the diagnostics. 781 Diagnostics.push_back( 782 std::string(A->getOption().getName().drop_front(1))); 783 } else if (A->getOption().matches(GroupWithValue)) { 784 // This is -Wfoo= or -Rfoo=, where foo is the name of the diagnostic 785 // group. Add only the group name to the diagnostics. 786 Diagnostics.push_back( 787 std::string(A->getOption().getName().drop_front(1).rtrim("=-"))); 788 } else { 789 // Otherwise, add its value (for OPT_W_Joined and similar). 790 Diagnostics.push_back(A->getValue()); 791 } 792 } 793} 794 795// Parse the Static Analyzer configuration. If \p Diags is set to nullptr, 796// it won't verify the input. 797static void parseAnalyzerConfigs(AnalyzerOptions &AnOpts, 798 DiagnosticsEngine *Diags); 799 800static void getAllNoBuiltinFuncValues(ArgList &Args, 801 std::vector<std::string> &Funcs) { 802 std::vector<std::string> Values = Args.getAllArgValues(OPT_fno_builtin_); 803 auto BuiltinEnd = llvm::partition(Values, Builtin::Context::isBuiltinFunc); 804 Funcs.insert(Funcs.end(), Values.begin(), BuiltinEnd); 805} 806 807static void GenerateAnalyzerArgs(AnalyzerOptions &Opts, 808 SmallVectorImpl<const char *> &Args, 809 CompilerInvocation::StringAllocator SA) { 810 const AnalyzerOptions *AnalyzerOpts = &Opts; 811 812#define ANALYZER_OPTION_WITH_MARSHALLING( \ 813 PREFIX_TYPE, NAME, ID, KIND, GROUP, ALIAS, ALIASARGS, FLAGS, PARAM, \ 814 HELPTEXT, METAVAR, VALUES, SPELLING, SHOULD_PARSE, ALWAYS_EMIT, KEYPATH, \ 815 DEFAULT_VALUE, IMPLIED_CHECK, IMPLIED_VALUE, NORMALIZER, DENORMALIZER, \ 816 MERGER, EXTRACTOR, TABLE_INDEX) \ 817 GENERATE_OPTION_WITH_MARSHALLING( \ 818 Args, SA, KIND, FLAGS, SPELLING, ALWAYS_EMIT, KEYPATH, DEFAULT_VALUE, \ 819 IMPLIED_CHECK, IMPLIED_VALUE, DENORMALIZER, EXTRACTOR, TABLE_INDEX) 820#include "clang/Driver/Options.inc" 821#undef ANALYZER_OPTION_WITH_MARSHALLING 822 823 if (Opts.AnalysisConstraintsOpt != RangeConstraintsModel) { 824 switch (Opts.AnalysisConstraintsOpt) { 825#define ANALYSIS_CONSTRAINTS(NAME, CMDFLAG, DESC, CREATFN) \ 826 case NAME##Model: \ 827 GenerateArg(Args, OPT_analyzer_constraints, CMDFLAG, SA); \ 828 break; 829#include "clang/StaticAnalyzer/Core/Analyses.def" 830 default: 831 llvm_unreachable("Tried to generate unknown analysis constraint."); 832 } 833 } 834 835 if (Opts.AnalysisDiagOpt != PD_HTML) { 836 switch (Opts.AnalysisDiagOpt) { 837#define ANALYSIS_DIAGNOSTICS(NAME, CMDFLAG, DESC, CREATFN) \ 838 case PD_##NAME: \ 839 GenerateArg(Args, OPT_analyzer_output, CMDFLAG, SA); \ 840 break; 841#include "clang/StaticAnalyzer/Core/Analyses.def" 842 default: 843 llvm_unreachable("Tried to generate unknown analysis diagnostic client."); 844 } 845 } 846 847 if (Opts.AnalysisPurgeOpt != PurgeStmt) { 848 switch (Opts.AnalysisPurgeOpt) { 849#define ANALYSIS_PURGE(NAME, CMDFLAG, DESC) \ 850 case NAME: \ 851 GenerateArg(Args, OPT_analyzer_purge, CMDFLAG, SA); \ 852 break; 853#include "clang/StaticAnalyzer/Core/Analyses.def" 854 default: 855 llvm_unreachable("Tried to generate unknown analysis purge mode."); 856 } 857 } 858 859 if (Opts.InliningMode != NoRedundancy) { 860 switch (Opts.InliningMode) { 861#define ANALYSIS_INLINING_MODE(NAME, CMDFLAG, DESC) \ 862 case NAME: \ 863 GenerateArg(Args, OPT_analyzer_inlining_mode, CMDFLAG, SA); \ 864 break; 865#include "clang/StaticAnalyzer/Core/Analyses.def" 866 default: 867 llvm_unreachable("Tried to generate unknown analysis inlining mode."); 868 } 869 } 870 871 for (const auto &CP : Opts.CheckersAndPackages) { 872 OptSpecifier Opt = 873 CP.second ? OPT_analyzer_checker : OPT_analyzer_disable_checker; 874 GenerateArg(Args, Opt, CP.first, SA); 875 } 876 877 AnalyzerOptions ConfigOpts; 878 parseAnalyzerConfigs(ConfigOpts, nullptr); 879 880 for (const auto &C : Opts.Config) { 881 // Don't generate anything that came from parseAnalyzerConfigs. It would be 882 // redundant and may not be valid on the command line. 883 auto Entry = ConfigOpts.Config.find(C.getKey()); 884 if (Entry != ConfigOpts.Config.end() && Entry->getValue() == C.getValue()) 885 continue; 886 887 GenerateArg(Args, OPT_analyzer_config, C.getKey() + "=" + C.getValue(), SA); 888 } 889 890 // Nothing to generate for FullCompilerInvocation. 891} 892 893static bool ParseAnalyzerArgs(AnalyzerOptions &Opts, ArgList &Args, 894 DiagnosticsEngine &Diags) { 895 unsigned NumErrorsBefore = Diags.getNumErrors(); 896 897 AnalyzerOptions *AnalyzerOpts = &Opts; 898 899#define ANALYZER_OPTION_WITH_MARSHALLING( \ 900 PREFIX_TYPE, NAME, ID, KIND, GROUP, ALIAS, ALIASARGS, FLAGS, PARAM, \ 901 HELPTEXT, METAVAR, VALUES, SPELLING, SHOULD_PARSE, ALWAYS_EMIT, KEYPATH, \ 902 DEFAULT_VALUE, IMPLIED_CHECK, IMPLIED_VALUE, NORMALIZER, DENORMALIZER, \ 903 MERGER, EXTRACTOR, TABLE_INDEX) \ 904 PARSE_OPTION_WITH_MARSHALLING( \ 905 Args, Diags, ID, FLAGS, PARAM, SHOULD_PARSE, KEYPATH, DEFAULT_VALUE, \ 906 IMPLIED_CHECK, IMPLIED_VALUE, NORMALIZER, MERGER, TABLE_INDEX) 907#include "clang/Driver/Options.inc" 908#undef ANALYZER_OPTION_WITH_MARSHALLING 909 910 if (Arg *A = Args.getLastArg(OPT_analyzer_constraints)) { 911 StringRef Name = A->getValue(); 912 AnalysisConstraints Value = llvm::StringSwitch<AnalysisConstraints>(Name) 913#define ANALYSIS_CONSTRAINTS(NAME, CMDFLAG, DESC, CREATFN) \ 914 .Case(CMDFLAG, NAME##Model) 915#include "clang/StaticAnalyzer/Core/Analyses.def" 916 .Default(NumConstraints); 917 if (Value == NumConstraints) { 918 Diags.Report(diag::err_drv_invalid_value) 919 << A->getAsString(Args) << Name; 920 } else { 921#ifndef LLVM_WITH_Z3 922 if (Value == AnalysisConstraints::Z3ConstraintsModel) { 923 Diags.Report(diag::err_analyzer_not_built_with_z3); 924 } 925#endif // LLVM_WITH_Z3 926 Opts.AnalysisConstraintsOpt = Value; 927 } 928 } 929 930 if (Arg *A = Args.getLastArg(OPT_analyzer_output)) { 931 StringRef Name = A->getValue(); 932 AnalysisDiagClients Value = llvm::StringSwitch<AnalysisDiagClients>(Name) 933#define ANALYSIS_DIAGNOSTICS(NAME, CMDFLAG, DESC, CREATFN) \ 934 .Case(CMDFLAG, PD_##NAME) 935#include "clang/StaticAnalyzer/Core/Analyses.def" 936 .Default(NUM_ANALYSIS_DIAG_CLIENTS); 937 if (Value == NUM_ANALYSIS_DIAG_CLIENTS) { 938 Diags.Report(diag::err_drv_invalid_value) 939 << A->getAsString(Args) << Name; 940 } else { 941 Opts.AnalysisDiagOpt = Value; 942 } 943 } 944 945 if (Arg *A = Args.getLastArg(OPT_analyzer_purge)) { 946 StringRef Name = A->getValue(); 947 AnalysisPurgeMode Value = llvm::StringSwitch<AnalysisPurgeMode>(Name) 948#define ANALYSIS_PURGE(NAME, CMDFLAG, DESC) \ 949 .Case(CMDFLAG, NAME) 950#include "clang/StaticAnalyzer/Core/Analyses.def" 951 .Default(NumPurgeModes); 952 if (Value == NumPurgeModes) { 953 Diags.Report(diag::err_drv_invalid_value) 954 << A->getAsString(Args) << Name; 955 } else { 956 Opts.AnalysisPurgeOpt = Value; 957 } 958 } 959 960 if (Arg *A = Args.getLastArg(OPT_analyzer_inlining_mode)) { 961 StringRef Name = A->getValue(); 962 AnalysisInliningMode Value = llvm::StringSwitch<AnalysisInliningMode>(Name) 963#define ANALYSIS_INLINING_MODE(NAME, CMDFLAG, DESC) \ 964 .Case(CMDFLAG, NAME) 965#include "clang/StaticAnalyzer/Core/Analyses.def" 966 .Default(NumInliningModes); 967 if (Value == NumInliningModes) { 968 Diags.Report(diag::err_drv_invalid_value) 969 << A->getAsString(Args) << Name; 970 } else { 971 Opts.InliningMode = Value; 972 } 973 } 974 975 Opts.CheckersAndPackages.clear(); 976 for (const Arg *A : 977 Args.filtered(OPT_analyzer_checker, OPT_analyzer_disable_checker)) { 978 A->claim(); 979 bool IsEnabled = A->getOption().getID() == OPT_analyzer_checker; 980 // We can have a list of comma separated checker names, e.g: 981 // '-analyzer-checker=cocoa,unix' 982 StringRef CheckerAndPackageList = A->getValue(); 983 SmallVector<StringRef, 16> CheckersAndPackages; 984 CheckerAndPackageList.split(CheckersAndPackages, ","); 985 for (const StringRef &CheckerOrPackage : CheckersAndPackages) 986 Opts.CheckersAndPackages.emplace_back(std::string(CheckerOrPackage), 987 IsEnabled); 988 } 989 990 // Go through the analyzer configuration options. 991 for (const auto *A : Args.filtered(OPT_analyzer_config)) { 992 993 // We can have a list of comma separated config names, e.g: 994 // '-analyzer-config key1=val1,key2=val2' 995 StringRef configList = A->getValue(); 996 SmallVector<StringRef, 4> configVals; 997 configList.split(configVals, ","); 998 for (const auto &configVal : configVals) { 999 StringRef key, val; 1000 std::tie(key, val) = configVal.split("="); 1001 if (val.empty()) { 1002 Diags.Report(SourceLocation(), 1003 diag::err_analyzer_config_no_value) << configVal; 1004 break; 1005 } 1006 if (val.contains('=')) { 1007 Diags.Report(SourceLocation(), 1008 diag::err_analyzer_config_multiple_values) 1009 << configVal; 1010 break; 1011 } 1012 1013 // TODO: Check checker options too, possibly in CheckerRegistry. 1014 // Leave unknown non-checker configs unclaimed. 1015 if (!key.contains(":") && Opts.isUnknownAnalyzerConfig(key)) { 1016 if (Opts.ShouldEmitErrorsOnInvalidConfigValue) 1017 Diags.Report(diag::err_analyzer_config_unknown) << key; 1018 continue; 1019 } 1020 1021 A->claim(); 1022 Opts.Config[key] = std::string(val); 1023 1024 // FIXME: Remove this hunk after clang-17 released. 1025 constexpr auto SingleFAM = 1026 "consider-single-element-arrays-as-flexible-array-members"; 1027 if (key == SingleFAM) { 1028 Diags.Report(diag::warn_analyzer_deprecated_option_with_alternative) 1029 << SingleFAM << "clang-17" 1030 << "-fstrict-flex-arrays=<N>"; 1031 } 1032 } 1033 } 1034 1035 if (Opts.ShouldEmitErrorsOnInvalidConfigValue) 1036 parseAnalyzerConfigs(Opts, &Diags); 1037 else 1038 parseAnalyzerConfigs(Opts, nullptr); 1039 1040 llvm::raw_string_ostream os(Opts.FullCompilerInvocation); 1041 for (unsigned i = 0; i < Args.getNumInputArgStrings(); ++i) { 1042 if (i != 0) 1043 os << " "; 1044 os << Args.getArgString(i); 1045 } 1046 os.flush(); 1047 1048 return Diags.getNumErrors() == NumErrorsBefore; 1049} 1050 1051static StringRef getStringOption(AnalyzerOptions::ConfigTable &Config, 1052 StringRef OptionName, StringRef DefaultVal) { 1053 return Config.insert({OptionName, std::string(DefaultVal)}).first->second; 1054} 1055 1056static void initOption(AnalyzerOptions::ConfigTable &Config, 1057 DiagnosticsEngine *Diags, 1058 StringRef &OptionField, StringRef Name, 1059 StringRef DefaultVal) { 1060 // String options may be known to invalid (e.g. if the expected string is a 1061 // file name, but the file does not exist), those will have to be checked in 1062 // parseConfigs. 1063 OptionField = getStringOption(Config, Name, DefaultVal); 1064} 1065 1066static void initOption(AnalyzerOptions::ConfigTable &Config, 1067 DiagnosticsEngine *Diags, 1068 bool &OptionField, StringRef Name, bool DefaultVal) { 1069 auto PossiblyInvalidVal = 1070 llvm::StringSwitch<std::optional<bool>>( 1071 getStringOption(Config, Name, (DefaultVal ? "true" : "false"))) 1072 .Case("true", true) 1073 .Case("false", false) 1074 .Default(std::nullopt); 1075 1076 if (!PossiblyInvalidVal) { 1077 if (Diags) 1078 Diags->Report(diag::err_analyzer_config_invalid_input) 1079 << Name << "a boolean"; 1080 else 1081 OptionField = DefaultVal; 1082 } else 1083 OptionField = *PossiblyInvalidVal; 1084} 1085 1086static void initOption(AnalyzerOptions::ConfigTable &Config, 1087 DiagnosticsEngine *Diags, 1088 unsigned &OptionField, StringRef Name, 1089 unsigned DefaultVal) { 1090 1091 OptionField = DefaultVal; 1092 bool HasFailed = getStringOption(Config, Name, std::to_string(DefaultVal)) 1093 .getAsInteger(0, OptionField); 1094 if (Diags && HasFailed) 1095 Diags->Report(diag::err_analyzer_config_invalid_input) 1096 << Name << "an unsigned"; 1097} 1098 1099static void parseAnalyzerConfigs(AnalyzerOptions &AnOpts, 1100 DiagnosticsEngine *Diags) { 1101 // TODO: There's no need to store the entire configtable, it'd be plenty 1102 // enough to store checker options. 1103 1104#define ANALYZER_OPTION(TYPE, NAME, CMDFLAG, DESC, DEFAULT_VAL) \ 1105 initOption(AnOpts.Config, Diags, AnOpts.NAME, CMDFLAG, DEFAULT_VAL); 1106#define ANALYZER_OPTION_DEPENDS_ON_USER_MODE(...) 1107#include "clang/StaticAnalyzer/Core/AnalyzerOptions.def" 1108 1109 assert(AnOpts.UserMode == "shallow" || AnOpts.UserMode == "deep"); 1110 const bool InShallowMode = AnOpts.UserMode == "shallow"; 1111 1112#define ANALYZER_OPTION(...) 1113#define ANALYZER_OPTION_DEPENDS_ON_USER_MODE(TYPE, NAME, CMDFLAG, DESC, \ 1114 SHALLOW_VAL, DEEP_VAL) \ 1115 initOption(AnOpts.Config, Diags, AnOpts.NAME, CMDFLAG, \ 1116 InShallowMode ? SHALLOW_VAL : DEEP_VAL); 1117#include "clang/StaticAnalyzer/Core/AnalyzerOptions.def" 1118 1119 // At this point, AnalyzerOptions is configured. Let's validate some options. 1120 1121 // FIXME: Here we try to validate the silenced checkers or packages are valid. 1122 // The current approach only validates the registered checkers which does not 1123 // contain the runtime enabled checkers and optimally we would validate both. 1124 if (!AnOpts.RawSilencedCheckersAndPackages.empty()) { 1125 std::vector<StringRef> Checkers = 1126 AnOpts.getRegisteredCheckers(/*IncludeExperimental=*/true); 1127 std::vector<StringRef> Packages = 1128 AnOpts.getRegisteredPackages(/*IncludeExperimental=*/true); 1129 1130 SmallVector<StringRef, 16> CheckersAndPackages; 1131 AnOpts.RawSilencedCheckersAndPackages.split(CheckersAndPackages, ";"); 1132 1133 for (const StringRef &CheckerOrPackage : CheckersAndPackages) { 1134 if (Diags) { 1135 bool IsChecker = CheckerOrPackage.contains('.'); 1136 bool IsValidName = IsChecker 1137 ? llvm::is_contained(Checkers, CheckerOrPackage) 1138 : llvm::is_contained(Packages, CheckerOrPackage); 1139 1140 if (!IsValidName) 1141 Diags->Report(diag::err_unknown_analyzer_checker_or_package) 1142 << CheckerOrPackage; 1143 } 1144 1145 AnOpts.SilencedCheckersAndPackages.emplace_back(CheckerOrPackage); 1146 } 1147 } 1148 1149 if (!Diags) 1150 return; 1151 1152 if (AnOpts.ShouldTrackConditionsDebug && !AnOpts.ShouldTrackConditions) 1153 Diags->Report(diag::err_analyzer_config_invalid_input) 1154 << "track-conditions-debug" << "'track-conditions' to also be enabled"; 1155 1156 if (!AnOpts.CTUDir.empty() && !llvm::sys::fs::is_directory(AnOpts.CTUDir)) 1157 Diags->Report(diag::err_analyzer_config_invalid_input) << "ctu-dir" 1158 << "a filename"; 1159 1160 if (!AnOpts.ModelPath.empty() && 1161 !llvm::sys::fs::is_directory(AnOpts.ModelPath)) 1162 Diags->Report(diag::err_analyzer_config_invalid_input) << "model-path" 1163 << "a filename"; 1164} 1165 1166/// Generate a remark argument. This is an inverse of `ParseOptimizationRemark`. 1167static void 1168GenerateOptimizationRemark(SmallVectorImpl<const char *> &Args, 1169 CompilerInvocation::StringAllocator SA, 1170 OptSpecifier OptEQ, StringRef Name, 1171 const CodeGenOptions::OptRemark &Remark) { 1172 if (Remark.hasValidPattern()) { 1173 GenerateArg(Args, OptEQ, Remark.Pattern, SA); 1174 } else if (Remark.Kind == CodeGenOptions::RK_Enabled) { 1175 GenerateArg(Args, OPT_R_Joined, Name, SA); 1176 } else if (Remark.Kind == CodeGenOptions::RK_Disabled) { 1177 GenerateArg(Args, OPT_R_Joined, StringRef("no-") + Name, SA); 1178 } 1179} 1180 1181/// Parse a remark command line argument. It may be missing, disabled/enabled by 1182/// '-R[no-]group' or specified with a regular expression by '-Rgroup=regexp'. 1183/// On top of that, it can be disabled/enabled globally by '-R[no-]everything'. 1184static CodeGenOptions::OptRemark 1185ParseOptimizationRemark(DiagnosticsEngine &Diags, ArgList &Args, 1186 OptSpecifier OptEQ, StringRef Name) { 1187 CodeGenOptions::OptRemark Result; 1188 1189 auto InitializeResultPattern = [&Diags, &Args, &Result](const Arg *A, 1190 StringRef Pattern) { 1191 Result.Pattern = Pattern.str(); 1192 1193 std::string RegexError; 1194 Result.Regex = std::make_shared<llvm::Regex>(Result.Pattern); 1195 if (!Result.Regex->isValid(RegexError)) { 1196 Diags.Report(diag::err_drv_optimization_remark_pattern) 1197 << RegexError << A->getAsString(Args); 1198 return false; 1199 } 1200 1201 return true; 1202 }; 1203 1204 for (Arg *A : Args) { 1205 if (A->getOption().matches(OPT_R_Joined)) { 1206 StringRef Value = A->getValue(); 1207 1208 if (Value == Name) 1209 Result.Kind = CodeGenOptions::RK_Enabled; 1210 else if (Value == "everything") 1211 Result.Kind = CodeGenOptions::RK_EnabledEverything; 1212 else if (Value.split('-') == std::make_pair(StringRef("no"), Name)) 1213 Result.Kind = CodeGenOptions::RK_Disabled; 1214 else if (Value == "no-everything") 1215 Result.Kind = CodeGenOptions::RK_DisabledEverything; 1216 else 1217 continue; 1218 1219 if (Result.Kind == CodeGenOptions::RK_Disabled || 1220 Result.Kind == CodeGenOptions::RK_DisabledEverything) { 1221 Result.Pattern = ""; 1222 Result.Regex = nullptr; 1223 } else { 1224 InitializeResultPattern(A, ".*"); 1225 } 1226 } else if (A->getOption().matches(OptEQ)) { 1227 Result.Kind = CodeGenOptions::RK_WithPattern; 1228 if (!InitializeResultPattern(A, A->getValue())) 1229 return CodeGenOptions::OptRemark(); 1230 } 1231 } 1232 1233 return Result; 1234} 1235 1236static bool parseDiagnosticLevelMask(StringRef FlagName, 1237 const std::vector<std::string> &Levels, 1238 DiagnosticsEngine &Diags, 1239 DiagnosticLevelMask &M) { 1240 bool Success = true; 1241 for (const auto &Level : Levels) { 1242 DiagnosticLevelMask const PM = 1243 llvm::StringSwitch<DiagnosticLevelMask>(Level) 1244 .Case("note", DiagnosticLevelMask::Note) 1245 .Case("remark", DiagnosticLevelMask::Remark) 1246 .Case("warning", DiagnosticLevelMask::Warning) 1247 .Case("error", DiagnosticLevelMask::Error) 1248 .Default(DiagnosticLevelMask::None); 1249 if (PM == DiagnosticLevelMask::None) { 1250 Success = false; 1251 Diags.Report(diag::err_drv_invalid_value) << FlagName << Level; 1252 } 1253 M = M | PM; 1254 } 1255 return Success; 1256} 1257 1258static void parseSanitizerKinds(StringRef FlagName, 1259 const std::vector<std::string> &Sanitizers, 1260 DiagnosticsEngine &Diags, SanitizerSet &S) { 1261 for (const auto &Sanitizer : Sanitizers) { 1262 SanitizerMask K = parseSanitizerValue(Sanitizer, /*AllowGroups=*/false); 1263 if (K == SanitizerMask()) 1264 Diags.Report(diag::err_drv_invalid_value) << FlagName << Sanitizer; 1265 else 1266 S.set(K, true); 1267 } 1268} 1269 1270static SmallVector<StringRef, 4> serializeSanitizerKinds(SanitizerSet S) { 1271 SmallVector<StringRef, 4> Values; 1272 serializeSanitizerSet(S, Values); 1273 return Values; 1274} 1275 1276static void parseXRayInstrumentationBundle(StringRef FlagName, StringRef Bundle, 1277 ArgList &Args, DiagnosticsEngine &D, 1278 XRayInstrSet &S) { 1279 llvm::SmallVector<StringRef, 2> BundleParts; 1280 llvm::SplitString(Bundle, BundleParts, ","); 1281 for (const auto &B : BundleParts) { 1282 auto Mask = parseXRayInstrValue(B); 1283 if (Mask == XRayInstrKind::None) 1284 if (B != "none") 1285 D.Report(diag::err_drv_invalid_value) << FlagName << Bundle; 1286 else 1287 S.Mask = Mask; 1288 else if (Mask == XRayInstrKind::All) 1289 S.Mask = Mask; 1290 else 1291 S.set(Mask, true); 1292 } 1293} 1294 1295static std::string serializeXRayInstrumentationBundle(const XRayInstrSet &S) { 1296 llvm::SmallVector<StringRef, 2> BundleParts; 1297 serializeXRayInstrValue(S, BundleParts); 1298 std::string Buffer; 1299 llvm::raw_string_ostream OS(Buffer); 1300 llvm::interleave(BundleParts, OS, [&OS](StringRef Part) { OS << Part; }, ","); 1301 return Buffer; 1302} 1303 1304// Set the profile kind using fprofile-instrument-use-path. 1305static void setPGOUseInstrumentor(CodeGenOptions &Opts, 1306 const Twine &ProfileName, 1307 DiagnosticsEngine &Diags) { 1308 auto ReaderOrErr = llvm::IndexedInstrProfReader::create(ProfileName); 1309 if (auto E = ReaderOrErr.takeError()) { 1310 unsigned DiagID = Diags.getCustomDiagID(DiagnosticsEngine::Error, 1311 "Error in reading profile %0: %1"); 1312 llvm::handleAllErrors(std::move(E), [&](const llvm::ErrorInfoBase &EI) { 1313 Diags.Report(DiagID) << ProfileName.str() << EI.message(); 1314 }); 1315 return; 1316 } 1317 std::unique_ptr<llvm::IndexedInstrProfReader> PGOReader = 1318 std::move(ReaderOrErr.get()); 1319 // Currently memprof profiles are only added at the IR level. Mark the profile 1320 // type as IR in that case as well and the subsequent matching needs to detect 1321 // which is available (might be one or both). 1322 if (PGOReader->isIRLevelProfile() || PGOReader->hasMemoryProfile()) { 1323 if (PGOReader->hasCSIRLevelProfile()) 1324 Opts.setProfileUse(CodeGenOptions::ProfileCSIRInstr); 1325 else 1326 Opts.setProfileUse(CodeGenOptions::ProfileIRInstr); 1327 } else 1328 Opts.setProfileUse(CodeGenOptions::ProfileClangInstr); 1329} 1330 1331void CompilerInvocation::GenerateCodeGenArgs( 1332 const CodeGenOptions &Opts, SmallVectorImpl<const char *> &Args, 1333 StringAllocator SA, const llvm::Triple &T, const std::string &OutputFile, 1334 const LangOptions *LangOpts) { 1335 const CodeGenOptions &CodeGenOpts = Opts; 1336 1337 if (Opts.OptimizationLevel == 0) 1338 GenerateArg(Args, OPT_O0, SA); 1339 else 1340 GenerateArg(Args, OPT_O, Twine(Opts.OptimizationLevel), SA); 1341 1342#define CODEGEN_OPTION_WITH_MARSHALLING( \ 1343 PREFIX_TYPE, NAME, ID, KIND, GROUP, ALIAS, ALIASARGS, FLAGS, PARAM, \ 1344 HELPTEXT, METAVAR, VALUES, SPELLING, SHOULD_PARSE, ALWAYS_EMIT, KEYPATH, \ 1345 DEFAULT_VALUE, IMPLIED_CHECK, IMPLIED_VALUE, NORMALIZER, DENORMALIZER, \ 1346 MERGER, EXTRACTOR, TABLE_INDEX) \ 1347 GENERATE_OPTION_WITH_MARSHALLING( \ 1348 Args, SA, KIND, FLAGS, SPELLING, ALWAYS_EMIT, KEYPATH, DEFAULT_VALUE, \ 1349 IMPLIED_CHECK, IMPLIED_VALUE, DENORMALIZER, EXTRACTOR, TABLE_INDEX) 1350#include "clang/Driver/Options.inc" 1351#undef CODEGEN_OPTION_WITH_MARSHALLING 1352 1353 if (Opts.OptimizationLevel > 0) { 1354 if (Opts.Inlining == CodeGenOptions::NormalInlining) 1355 GenerateArg(Args, OPT_finline_functions, SA); 1356 else if (Opts.Inlining == CodeGenOptions::OnlyHintInlining) 1357 GenerateArg(Args, OPT_finline_hint_functions, SA); 1358 else if (Opts.Inlining == CodeGenOptions::OnlyAlwaysInlining) 1359 GenerateArg(Args, OPT_fno_inline, SA); 1360 } 1361 1362 if (Opts.DirectAccessExternalData && LangOpts->PICLevel != 0) 1363 GenerateArg(Args, OPT_fdirect_access_external_data, SA); 1364 else if (!Opts.DirectAccessExternalData && LangOpts->PICLevel == 0) 1365 GenerateArg(Args, OPT_fno_direct_access_external_data, SA); 1366 1367 std::optional<StringRef> DebugInfoVal; 1368 switch (Opts.DebugInfo) { 1369 case codegenoptions::DebugLineTablesOnly: 1370 DebugInfoVal = "line-tables-only"; 1371 break; 1372 case codegenoptions::DebugDirectivesOnly: 1373 DebugInfoVal = "line-directives-only"; 1374 break; 1375 case codegenoptions::DebugInfoConstructor: 1376 DebugInfoVal = "constructor"; 1377 break; 1378 case codegenoptions::LimitedDebugInfo: 1379 DebugInfoVal = "limited"; 1380 break; 1381 case codegenoptions::FullDebugInfo: 1382 DebugInfoVal = "standalone"; 1383 break; 1384 case codegenoptions::UnusedTypeInfo: 1385 DebugInfoVal = "unused-types"; 1386 break; 1387 case codegenoptions::NoDebugInfo: // default value 1388 DebugInfoVal = std::nullopt; 1389 break; 1390 case codegenoptions::LocTrackingOnly: // implied value 1391 DebugInfoVal = std::nullopt; 1392 break; 1393 } 1394 if (DebugInfoVal) 1395 GenerateArg(Args, OPT_debug_info_kind_EQ, *DebugInfoVal, SA); 1396 1397 for (const auto &Prefix : Opts.DebugPrefixMap) 1398 GenerateArg(Args, OPT_fdebug_prefix_map_EQ, 1399 Prefix.first + "=" + Prefix.second, SA); 1400 1401 for (const auto &Prefix : Opts.CoveragePrefixMap) 1402 GenerateArg(Args, OPT_fcoverage_prefix_map_EQ, 1403 Prefix.first + "=" + Prefix.second, SA); 1404 1405 if (Opts.NewStructPathTBAA) 1406 GenerateArg(Args, OPT_new_struct_path_tbaa, SA); 1407 1408 if (Opts.OptimizeSize == 1) 1409 GenerateArg(Args, OPT_O, "s", SA); 1410 else if (Opts.OptimizeSize == 2) 1411 GenerateArg(Args, OPT_O, "z", SA); 1412 1413 // SimplifyLibCalls is set only in the absence of -fno-builtin and 1414 // -ffreestanding. We'll consider that when generating them. 1415 1416 // NoBuiltinFuncs are generated by LangOptions. 1417 1418 if (Opts.UnrollLoops && Opts.OptimizationLevel <= 1) 1419 GenerateArg(Args, OPT_funroll_loops, SA); 1420 else if (!Opts.UnrollLoops && Opts.OptimizationLevel > 1) 1421 GenerateArg(Args, OPT_fno_unroll_loops, SA); 1422 1423 if (!Opts.BinutilsVersion.empty()) 1424 GenerateArg(Args, OPT_fbinutils_version_EQ, Opts.BinutilsVersion, SA); 1425 1426 if (Opts.DebugNameTable == 1427 static_cast<unsigned>(llvm::DICompileUnit::DebugNameTableKind::GNU)) 1428 GenerateArg(Args, OPT_ggnu_pubnames, SA); 1429 else if (Opts.DebugNameTable == 1430 static_cast<unsigned>( 1431 llvm::DICompileUnit::DebugNameTableKind::Default)) 1432 GenerateArg(Args, OPT_gpubnames, SA); 1433 1434 auto TNK = Opts.getDebugSimpleTemplateNames(); 1435 if (TNK != codegenoptions::DebugTemplateNamesKind::Full) { 1436 if (TNK == codegenoptions::DebugTemplateNamesKind::Simple) 1437 GenerateArg(Args, OPT_gsimple_template_names_EQ, "simple", SA); 1438 else if (TNK == codegenoptions::DebugTemplateNamesKind::Mangled) 1439 GenerateArg(Args, OPT_gsimple_template_names_EQ, "mangled", SA); 1440 } 1441 // ProfileInstrumentUsePath is marshalled automatically, no need to generate 1442 // it or PGOUseInstrumentor. 1443 1444 if (Opts.TimePasses) { 1445 if (Opts.TimePassesPerRun) 1446 GenerateArg(Args, OPT_ftime_report_EQ, "per-pass-run", SA); 1447 else 1448 GenerateArg(Args, OPT_ftime_report, SA); 1449 } 1450 1451 if (Opts.PrepareForLTO && !Opts.PrepareForThinLTO) 1452 GenerateArg(Args, OPT_flto_EQ, "full", SA); 1453 1454 if (Opts.PrepareForThinLTO) 1455 GenerateArg(Args, OPT_flto_EQ, "thin", SA); 1456 1457 if (!Opts.ThinLTOIndexFile.empty()) 1458 GenerateArg(Args, OPT_fthinlto_index_EQ, Opts.ThinLTOIndexFile, SA); 1459 1460 if (Opts.SaveTempsFilePrefix == OutputFile) 1461 GenerateArg(Args, OPT_save_temps_EQ, "obj", SA); 1462 1463 StringRef MemProfileBasename("memprof.profraw"); 1464 if (!Opts.MemoryProfileOutput.empty()) { 1465 if (Opts.MemoryProfileOutput == MemProfileBasename) { 1466 GenerateArg(Args, OPT_fmemory_profile, SA); 1467 } else { 1468 size_t ArgLength = 1469 Opts.MemoryProfileOutput.size() - MemProfileBasename.size(); 1470 GenerateArg(Args, OPT_fmemory_profile_EQ, 1471 Opts.MemoryProfileOutput.substr(0, ArgLength), SA); 1472 } 1473 } 1474 1475 if (memcmp(Opts.CoverageVersion, "408*", 4) != 0) 1476 GenerateArg(Args, OPT_coverage_version_EQ, 1477 StringRef(Opts.CoverageVersion, 4), SA); 1478 1479 // TODO: Check if we need to generate arguments stored in CmdArgs. (Namely 1480 // '-fembed_bitcode', which does not map to any CompilerInvocation field and 1481 // won't be generated.) 1482 1483 if (Opts.XRayInstrumentationBundle.Mask != XRayInstrKind::All) { 1484 std::string InstrBundle = 1485 serializeXRayInstrumentationBundle(Opts.XRayInstrumentationBundle); 1486 if (!InstrBundle.empty()) 1487 GenerateArg(Args, OPT_fxray_instrumentation_bundle, InstrBundle, SA); 1488 } 1489 1490 if (Opts.CFProtectionReturn && Opts.CFProtectionBranch) 1491 GenerateArg(Args, OPT_fcf_protection_EQ, "full", SA); 1492 else if (Opts.CFProtectionReturn) 1493 GenerateArg(Args, OPT_fcf_protection_EQ, "return", SA); 1494 else if (Opts.CFProtectionBranch) 1495 GenerateArg(Args, OPT_fcf_protection_EQ, "branch", SA); 1496 1497 if (Opts.FunctionReturnThunks) 1498 GenerateArg(Args, OPT_mfunction_return_EQ, "thunk-extern", SA); 1499 1500 for (const auto &F : Opts.LinkBitcodeFiles) { 1501 bool Builtint = F.LinkFlags == llvm::Linker::Flags::LinkOnlyNeeded && 1502 F.PropagateAttrs && F.Internalize; 1503 GenerateArg(Args, 1504 Builtint ? OPT_mlink_builtin_bitcode : OPT_mlink_bitcode_file, 1505 F.Filename, SA); 1506 } 1507 1508 if (Opts.ReturnProtector) { 1509 GenerateArg(Args, OPT_ret_protector, SA); 1510 } 1511 1512 GenerateArg( 1513 Args, Opts.EmulatedTLS ? OPT_femulated_tls : OPT_fno_emulated_tls, SA); 1514 1515 if (Opts.FPDenormalMode != llvm::DenormalMode::getIEEE()) 1516 GenerateArg(Args, OPT_fdenormal_fp_math_EQ, Opts.FPDenormalMode.str(), SA); 1517 1518 if ((Opts.FPDenormalMode != Opts.FP32DenormalMode) || 1519 (Opts.FP32DenormalMode != llvm::DenormalMode::getIEEE())) 1520 GenerateArg(Args, OPT_fdenormal_fp_math_f32_EQ, Opts.FP32DenormalMode.str(), 1521 SA); 1522 1523 if (Opts.StructReturnConvention == CodeGenOptions::SRCK_OnStack) { 1524 OptSpecifier Opt = 1525 T.isPPC32() ? OPT_maix_struct_return : OPT_fpcc_struct_return; 1526 GenerateArg(Args, Opt, SA); 1527 } else if (Opts.StructReturnConvention == CodeGenOptions::SRCK_InRegs) { 1528 OptSpecifier Opt = 1529 T.isPPC32() ? OPT_msvr4_struct_return : OPT_freg_struct_return; 1530 GenerateArg(Args, Opt, SA); 1531 } 1532 1533 if (Opts.EnableAIXExtendedAltivecABI) 1534 GenerateArg(Args, OPT_mabi_EQ_vec_extabi, SA); 1535 1536 if (!Opts.OptRecordPasses.empty()) 1537 GenerateArg(Args, OPT_opt_record_passes, Opts.OptRecordPasses, SA); 1538 1539 if (!Opts.OptRecordFormat.empty()) 1540 GenerateArg(Args, OPT_opt_record_format, Opts.OptRecordFormat, SA); 1541 1542 GenerateOptimizationRemark(Args, SA, OPT_Rpass_EQ, "pass", 1543 Opts.OptimizationRemark); 1544 1545 GenerateOptimizationRemark(Args, SA, OPT_Rpass_missed_EQ, "pass-missed", 1546 Opts.OptimizationRemarkMissed); 1547 1548 GenerateOptimizationRemark(Args, SA, OPT_Rpass_analysis_EQ, "pass-analysis", 1549 Opts.OptimizationRemarkAnalysis); 1550 1551 GenerateArg(Args, OPT_fdiagnostics_hotness_threshold_EQ, 1552 Opts.DiagnosticsHotnessThreshold 1553 ? Twine(*Opts.DiagnosticsHotnessThreshold) 1554 : "auto", 1555 SA); 1556 1557 GenerateArg(Args, OPT_fdiagnostics_misexpect_tolerance_EQ, 1558 Twine(*Opts.DiagnosticsMisExpectTolerance), SA); 1559 1560 for (StringRef Sanitizer : serializeSanitizerKinds(Opts.SanitizeRecover)) 1561 GenerateArg(Args, OPT_fsanitize_recover_EQ, Sanitizer, SA); 1562 1563 for (StringRef Sanitizer : serializeSanitizerKinds(Opts.SanitizeTrap)) 1564 GenerateArg(Args, OPT_fsanitize_trap_EQ, Sanitizer, SA); 1565 1566 if (!Opts.EmitVersionIdentMetadata) 1567 GenerateArg(Args, OPT_Qn, SA); 1568 1569 switch (Opts.FiniteLoops) { 1570 case CodeGenOptions::FiniteLoopsKind::Language: 1571 break; 1572 case CodeGenOptions::FiniteLoopsKind::Always: 1573 GenerateArg(Args, OPT_ffinite_loops, SA); 1574 break; 1575 case CodeGenOptions::FiniteLoopsKind::Never: 1576 GenerateArg(Args, OPT_fno_finite_loops, SA); 1577 break; 1578 } 1579} 1580 1581bool CompilerInvocation::ParseCodeGenArgs(CodeGenOptions &Opts, ArgList &Args, 1582 InputKind IK, 1583 DiagnosticsEngine &Diags, 1584 const llvm::Triple &T, 1585 const std::string &OutputFile, 1586 const LangOptions &LangOptsRef) { 1587 unsigned NumErrorsBefore = Diags.getNumErrors(); 1588 1589 unsigned OptimizationLevel = getOptimizationLevel(Args, IK, Diags); 1590 // TODO: This could be done in Driver 1591 unsigned MaxOptLevel = 3; 1592 if (OptimizationLevel > MaxOptLevel) { 1593 // If the optimization level is not supported, fall back on the default 1594 // optimization 1595 Diags.Report(diag::warn_drv_optimization_value) 1596 << Args.getLastArg(OPT_O)->getAsString(Args) << "-O" << MaxOptLevel; 1597 OptimizationLevel = MaxOptLevel; 1598 } 1599 Opts.OptimizationLevel = OptimizationLevel; 1600 1601 // The key paths of codegen options defined in Options.td start with 1602 // "CodeGenOpts.". Let's provide the expected variable name and type. 1603 CodeGenOptions &CodeGenOpts = Opts; 1604 // Some codegen options depend on language options. Let's provide the expected 1605 // variable name and type. 1606 const LangOptions *LangOpts = &LangOptsRef; 1607 1608#define CODEGEN_OPTION_WITH_MARSHALLING( \ 1609 PREFIX_TYPE, NAME, ID, KIND, GROUP, ALIAS, ALIASARGS, FLAGS, PARAM, \ 1610 HELPTEXT, METAVAR, VALUES, SPELLING, SHOULD_PARSE, ALWAYS_EMIT, KEYPATH, \ 1611 DEFAULT_VALUE, IMPLIED_CHECK, IMPLIED_VALUE, NORMALIZER, DENORMALIZER, \ 1612 MERGER, EXTRACTOR, TABLE_INDEX) \ 1613 PARSE_OPTION_WITH_MARSHALLING( \ 1614 Args, Diags, ID, FLAGS, PARAM, SHOULD_PARSE, KEYPATH, DEFAULT_VALUE, \ 1615 IMPLIED_CHECK, IMPLIED_VALUE, NORMALIZER, MERGER, TABLE_INDEX) 1616#include "clang/Driver/Options.inc" 1617#undef CODEGEN_OPTION_WITH_MARSHALLING 1618 1619 // At O0 we want to fully disable inlining outside of cases marked with 1620 // 'alwaysinline' that are required for correctness. 1621 if (Opts.OptimizationLevel == 0) { 1622 Opts.setInlining(CodeGenOptions::OnlyAlwaysInlining); 1623 } else if (const Arg *A = Args.getLastArg(options::OPT_finline_functions, 1624 options::OPT_finline_hint_functions, 1625 options::OPT_fno_inline_functions, 1626 options::OPT_fno_inline)) { 1627 // Explicit inlining flags can disable some or all inlining even at 1628 // optimization levels above zero. 1629 if (A->getOption().matches(options::OPT_finline_functions)) 1630 Opts.setInlining(CodeGenOptions::NormalInlining); 1631 else if (A->getOption().matches(options::OPT_finline_hint_functions)) 1632 Opts.setInlining(CodeGenOptions::OnlyHintInlining); 1633 else 1634 Opts.setInlining(CodeGenOptions::OnlyAlwaysInlining); 1635 } else { 1636 Opts.setInlining(CodeGenOptions::NormalInlining); 1637 } 1638 1639 // PIC defaults to -fno-direct-access-external-data while non-PIC defaults to 1640 // -fdirect-access-external-data. 1641 Opts.DirectAccessExternalData = 1642 Args.hasArg(OPT_fdirect_access_external_data) || 1643 (!Args.hasArg(OPT_fno_direct_access_external_data) && 1644 LangOpts->PICLevel == 0); 1645 1646 if (Arg *A = Args.getLastArg(OPT_debug_info_kind_EQ)) { 1647 unsigned Val = 1648 llvm::StringSwitch<unsigned>(A->getValue()) 1649 .Case("line-tables-only", codegenoptions::DebugLineTablesOnly) 1650 .Case("line-directives-only", codegenoptions::DebugDirectivesOnly) 1651 .Case("constructor", codegenoptions::DebugInfoConstructor) 1652 .Case("limited", codegenoptions::LimitedDebugInfo) 1653 .Case("standalone", codegenoptions::FullDebugInfo) 1654 .Case("unused-types", codegenoptions::UnusedTypeInfo) 1655 .Default(~0U); 1656 if (Val == ~0U) 1657 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) 1658 << A->getValue(); 1659 else 1660 Opts.setDebugInfo(static_cast<codegenoptions::DebugInfoKind>(Val)); 1661 } 1662 1663 // If -fuse-ctor-homing is set and limited debug info is already on, then use 1664 // constructor homing, and vice versa for -fno-use-ctor-homing. 1665 if (const Arg *A = 1666 Args.getLastArg(OPT_fuse_ctor_homing, OPT_fno_use_ctor_homing)) { 1667 if (A->getOption().matches(OPT_fuse_ctor_homing) && 1668 Opts.getDebugInfo() == codegenoptions::LimitedDebugInfo) 1669 Opts.setDebugInfo(codegenoptions::DebugInfoConstructor); 1670 if (A->getOption().matches(OPT_fno_use_ctor_homing) && 1671 Opts.getDebugInfo() == codegenoptions::DebugInfoConstructor) 1672 Opts.setDebugInfo(codegenoptions::LimitedDebugInfo); 1673 } 1674 1675 for (const auto &Arg : Args.getAllArgValues(OPT_fdebug_prefix_map_EQ)) { 1676 auto Split = StringRef(Arg).split('='); 1677 Opts.DebugPrefixMap.insert( 1678 {std::string(Split.first), std::string(Split.second)}); 1679 } 1680 1681 for (const auto &Arg : Args.getAllArgValues(OPT_fcoverage_prefix_map_EQ)) { 1682 auto Split = StringRef(Arg).split('='); 1683 Opts.CoveragePrefixMap.insert( 1684 {std::string(Split.first), std::string(Split.second)}); 1685 } 1686 1687 const llvm::Triple::ArchType DebugEntryValueArchs[] = { 1688 llvm::Triple::x86, llvm::Triple::x86_64, llvm::Triple::aarch64, 1689 llvm::Triple::arm, llvm::Triple::armeb, llvm::Triple::mips, 1690 llvm::Triple::mipsel, llvm::Triple::mips64, llvm::Triple::mips64el}; 1691 1692 if (Opts.OptimizationLevel > 0 && Opts.hasReducedDebugInfo() && 1693 llvm::is_contained(DebugEntryValueArchs, T.getArch())) 1694 Opts.EmitCallSiteInfo = true; 1695 1696 if (!Opts.EnableDIPreservationVerify && Opts.DIBugsReportFilePath.size()) { 1697 Diags.Report(diag::warn_ignoring_verify_debuginfo_preserve_export) 1698 << Opts.DIBugsReportFilePath; 1699 Opts.DIBugsReportFilePath = ""; 1700 } 1701 1702 Opts.NewStructPathTBAA = !Args.hasArg(OPT_no_struct_path_tbaa) && 1703 Args.hasArg(OPT_new_struct_path_tbaa); 1704 Opts.OptimizeSize = getOptimizationLevelSize(Args); 1705 Opts.SimplifyLibCalls = !LangOpts->NoBuiltin; 1706 if (Opts.SimplifyLibCalls) 1707 Opts.NoBuiltinFuncs = LangOpts->NoBuiltinFuncs; 1708 Opts.UnrollLoops = 1709 Args.hasFlag(OPT_funroll_loops, OPT_fno_unroll_loops, 1710 (Opts.OptimizationLevel > 1)); 1711 Opts.BinutilsVersion = 1712 std::string(Args.getLastArgValue(OPT_fbinutils_version_EQ)); 1713 1714 Opts.DebugNameTable = static_cast<unsigned>( 1715 Args.hasArg(OPT_ggnu_pubnames) 1716 ? llvm::DICompileUnit::DebugNameTableKind::GNU 1717 : Args.hasArg(OPT_gpubnames) 1718 ? llvm::DICompileUnit::DebugNameTableKind::Default 1719 : llvm::DICompileUnit::DebugNameTableKind::None); 1720 if (const Arg *A = Args.getLastArg(OPT_gsimple_template_names_EQ)) { 1721 StringRef Value = A->getValue(); 1722 if (Value != "simple" && Value != "mangled") 1723 Diags.Report(diag::err_drv_unsupported_option_argument) 1724 << A->getSpelling() << A->getValue(); 1725 Opts.setDebugSimpleTemplateNames( 1726 StringRef(A->getValue()) == "simple" 1727 ? codegenoptions::DebugTemplateNamesKind::Simple 1728 : codegenoptions::DebugTemplateNamesKind::Mangled); 1729 } 1730 1731 if (!Opts.ProfileInstrumentUsePath.empty()) 1732 setPGOUseInstrumentor(Opts, Opts.ProfileInstrumentUsePath, Diags); 1733 1734 if (const Arg *A = Args.getLastArg(OPT_ftime_report, OPT_ftime_report_EQ)) { 1735 Opts.TimePasses = true; 1736 1737 // -ftime-report= is only for new pass manager. 1738 if (A->getOption().getID() == OPT_ftime_report_EQ) { 1739 StringRef Val = A->getValue(); 1740 if (Val == "per-pass") 1741 Opts.TimePassesPerRun = false; 1742 else if (Val == "per-pass-run") 1743 Opts.TimePassesPerRun = true; 1744 else 1745 Diags.Report(diag::err_drv_invalid_value) 1746 << A->getAsString(Args) << A->getValue(); 1747 } 1748 } 1749 1750 Opts.PrepareForLTO = false; 1751 Opts.PrepareForThinLTO = false; 1752 if (Arg *A = Args.getLastArg(OPT_flto_EQ)) { 1753 Opts.PrepareForLTO = true; 1754 StringRef S = A->getValue(); 1755 if (S == "thin") 1756 Opts.PrepareForThinLTO = true; 1757 else if (S != "full") 1758 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << S; 1759 } 1760 if (Arg *A = Args.getLastArg(OPT_fthinlto_index_EQ)) { 1761 if (IK.getLanguage() != Language::LLVM_IR) 1762 Diags.Report(diag::err_drv_argument_only_allowed_with) 1763 << A->getAsString(Args) << "-x ir"; 1764 Opts.ThinLTOIndexFile = 1765 std::string(Args.getLastArgValue(OPT_fthinlto_index_EQ)); 1766 } 1767 if (Arg *A = Args.getLastArg(OPT_save_temps_EQ)) 1768 Opts.SaveTempsFilePrefix = 1769 llvm::StringSwitch<std::string>(A->getValue()) 1770 .Case("obj", OutputFile) 1771 .Default(llvm::sys::path::filename(OutputFile).str()); 1772 1773 // The memory profile runtime appends the pid to make this name more unique. 1774 const char *MemProfileBasename = "memprof.profraw"; 1775 if (Args.hasArg(OPT_fmemory_profile_EQ)) { 1776 SmallString<128> Path( 1777 std::string(Args.getLastArgValue(OPT_fmemory_profile_EQ))); 1778 llvm::sys::path::append(Path, MemProfileBasename); 1779 Opts.MemoryProfileOutput = std::string(Path); 1780 } else if (Args.hasArg(OPT_fmemory_profile)) 1781 Opts.MemoryProfileOutput = MemProfileBasename; 1782 1783 memcpy(Opts.CoverageVersion, "408*", 4); 1784 if (Opts.EmitGcovArcs || Opts.EmitGcovNotes) { 1785 if (Args.hasArg(OPT_coverage_version_EQ)) { 1786 StringRef CoverageVersion = Args.getLastArgValue(OPT_coverage_version_EQ); 1787 if (CoverageVersion.size() != 4) { 1788 Diags.Report(diag::err_drv_invalid_value) 1789 << Args.getLastArg(OPT_coverage_version_EQ)->getAsString(Args) 1790 << CoverageVersion; 1791 } else { 1792 memcpy(Opts.CoverageVersion, CoverageVersion.data(), 4); 1793 } 1794 } 1795 } 1796 // FIXME: For backend options that are not yet recorded as function 1797 // attributes in the IR, keep track of them so we can embed them in a 1798 // separate data section and use them when building the bitcode. 1799 for (const auto &A : Args) { 1800 // Do not encode output and input. 1801 if (A->getOption().getID() == options::OPT_o || 1802 A->getOption().getID() == options::OPT_INPUT || 1803 A->getOption().getID() == options::OPT_x || 1804 A->getOption().getID() == options::OPT_fembed_bitcode || 1805 A->getOption().matches(options::OPT_W_Group)) 1806 continue; 1807 ArgStringList ASL; 1808 A->render(Args, ASL); 1809 for (const auto &arg : ASL) { 1810 StringRef ArgStr(arg); 1811 Opts.CmdArgs.insert(Opts.CmdArgs.end(), ArgStr.begin(), ArgStr.end()); 1812 // using \00 to separate each commandline options. 1813 Opts.CmdArgs.push_back('\0'); 1814 } 1815 } 1816 1817 auto XRayInstrBundles = 1818 Args.getAllArgValues(OPT_fxray_instrumentation_bundle); 1819 if (XRayInstrBundles.empty()) 1820 Opts.XRayInstrumentationBundle.Mask = XRayInstrKind::All; 1821 else 1822 for (const auto &A : XRayInstrBundles) 1823 parseXRayInstrumentationBundle("-fxray-instrumentation-bundle=", A, Args, 1824 Diags, Opts.XRayInstrumentationBundle); 1825 1826 if (const Arg *A = Args.getLastArg(OPT_fcf_protection_EQ)) { 1827 StringRef Name = A->getValue(); 1828 if (Name == "full") { 1829 Opts.CFProtectionReturn = 1; 1830 Opts.CFProtectionBranch = 1; 1831 } else if (Name == "return") 1832 Opts.CFProtectionReturn = 1; 1833 else if (Name == "branch") 1834 Opts.CFProtectionBranch = 1; 1835 else if (Name != "none") 1836 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Name; 1837 } 1838 1839 if (const Arg *A = Args.getLastArg(OPT_mfunction_return_EQ)) { 1840 auto Val = llvm::StringSwitch<llvm::FunctionReturnThunksKind>(A->getValue()) 1841 .Case("keep", llvm::FunctionReturnThunksKind::Keep) 1842 .Case("thunk-extern", llvm::FunctionReturnThunksKind::Extern) 1843 .Default(llvm::FunctionReturnThunksKind::Invalid); 1844 // SystemZ might want to add support for "expolines." 1845 if (!T.isX86()) 1846 Diags.Report(diag::err_drv_argument_not_allowed_with) 1847 << A->getSpelling() << T.getTriple(); 1848 else if (Val == llvm::FunctionReturnThunksKind::Invalid) 1849 Diags.Report(diag::err_drv_invalid_value) 1850 << A->getAsString(Args) << A->getValue(); 1851 else if (Val == llvm::FunctionReturnThunksKind::Extern && 1852 Args.getLastArgValue(OPT_mcmodel_EQ).equals("large")) 1853 Diags.Report(diag::err_drv_argument_not_allowed_with) 1854 << A->getAsString(Args) 1855 << Args.getLastArg(OPT_mcmodel_EQ)->getAsString(Args); 1856 else 1857 Opts.FunctionReturnThunks = static_cast<unsigned>(Val); 1858 } 1859 1860 for (auto *A : 1861 Args.filtered(OPT_mlink_bitcode_file, OPT_mlink_builtin_bitcode)) { 1862 CodeGenOptions::BitcodeFileToLink F; 1863 F.Filename = A->getValue(); 1864 if (A->getOption().matches(OPT_mlink_builtin_bitcode)) { 1865 F.LinkFlags = llvm::Linker::Flags::LinkOnlyNeeded; 1866 // When linking CUDA bitcode, propagate function attributes so that 1867 // e.g. libdevice gets fast-math attrs if we're building with fast-math. 1868 F.PropagateAttrs = true; 1869 F.Internalize = true; 1870 } 1871 Opts.LinkBitcodeFiles.push_back(F); 1872 } 1873 1874 Opts.ReturnProtector = Args.hasArg(OPT_ret_protector); 1875 1876 if (!Args.getLastArg(OPT_femulated_tls) && 1877 !Args.getLastArg(OPT_fno_emulated_tls)) { 1878 Opts.EmulatedTLS = T.hasDefaultEmulatedTLS(); 1879 } 1880 1881 if (Arg *A = Args.getLastArg(OPT_ftlsmodel_EQ)) { 1882 if (T.isOSAIX()) { 1883 StringRef Name = A->getValue(); 1884 if (Name != "global-dynamic") 1885 Diags.Report(diag::err_aix_unsupported_tls_model) << Name; 1886 } 1887 } 1888 1889 if (Arg *A = Args.getLastArg(OPT_fdenormal_fp_math_EQ)) { 1890 StringRef Val = A->getValue(); 1891 Opts.FPDenormalMode = llvm::parseDenormalFPAttribute(Val); 1892 Opts.FP32DenormalMode = Opts.FPDenormalMode; 1893 if (!Opts.FPDenormalMode.isValid()) 1894 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Val; 1895 } 1896 1897 if (Arg *A = Args.getLastArg(OPT_fdenormal_fp_math_f32_EQ)) { 1898 StringRef Val = A->getValue(); 1899 Opts.FP32DenormalMode = llvm::parseDenormalFPAttribute(Val); 1900 if (!Opts.FP32DenormalMode.isValid()) 1901 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Val; 1902 } 1903 1904 // X86_32 has -fppc-struct-return and -freg-struct-return. 1905 // PPC32 has -maix-struct-return and -msvr4-struct-return. 1906 if (Arg *A = 1907 Args.getLastArg(OPT_fpcc_struct_return, OPT_freg_struct_return, 1908 OPT_maix_struct_return, OPT_msvr4_struct_return)) { 1909 // TODO: We might want to consider enabling these options on AIX in the 1910 // future. 1911 if (T.isOSAIX()) 1912 Diags.Report(diag::err_drv_unsupported_opt_for_target) 1913 << A->getSpelling() << T.str(); 1914 1915 const Option &O = A->getOption(); 1916 if (O.matches(OPT_fpcc_struct_return) || 1917 O.matches(OPT_maix_struct_return)) { 1918 Opts.setStructReturnConvention(CodeGenOptions::SRCK_OnStack); 1919 } else { 1920 assert(O.matches(OPT_freg_struct_return) || 1921 O.matches(OPT_msvr4_struct_return)); 1922 Opts.setStructReturnConvention(CodeGenOptions::SRCK_InRegs); 1923 } 1924 } 1925 1926 if (Arg *A = 1927 Args.getLastArg(OPT_mabi_EQ_vec_default, OPT_mabi_EQ_vec_extabi)) { 1928 if (!T.isOSAIX()) 1929 Diags.Report(diag::err_drv_unsupported_opt_for_target) 1930 << A->getSpelling() << T.str(); 1931 1932 const Option &O = A->getOption(); 1933 Opts.EnableAIXExtendedAltivecABI = O.matches(OPT_mabi_EQ_vec_extabi); 1934 } 1935 1936 if (Arg *A = Args.getLastArg(OPT_mabi_EQ_quadword_atomics)) { 1937 if (!T.isOSAIX() || T.isPPC32()) 1938 Diags.Report(diag::err_drv_unsupported_opt_for_target) 1939 << A->getSpelling() << T.str(); 1940 } 1941 1942 bool NeedLocTracking = false; 1943 1944 if (!Opts.OptRecordFile.empty()) 1945 NeedLocTracking = true; 1946 1947 if (Arg *A = Args.getLastArg(OPT_opt_record_passes)) { 1948 Opts.OptRecordPasses = A->getValue(); 1949 NeedLocTracking = true; 1950 } 1951 1952 if (Arg *A = Args.getLastArg(OPT_opt_record_format)) { 1953 Opts.OptRecordFormat = A->getValue(); 1954 NeedLocTracking = true; 1955 } 1956 1957 Opts.OptimizationRemark = 1958 ParseOptimizationRemark(Diags, Args, OPT_Rpass_EQ, "pass"); 1959 1960 Opts.OptimizationRemarkMissed = 1961 ParseOptimizationRemark(Diags, Args, OPT_Rpass_missed_EQ, "pass-missed"); 1962 1963 Opts.OptimizationRemarkAnalysis = ParseOptimizationRemark( 1964 Diags, Args, OPT_Rpass_analysis_EQ, "pass-analysis"); 1965 1966 NeedLocTracking |= Opts.OptimizationRemark.hasValidPattern() || 1967 Opts.OptimizationRemarkMissed.hasValidPattern() || 1968 Opts.OptimizationRemarkAnalysis.hasValidPattern(); 1969 1970 bool UsingSampleProfile = !Opts.SampleProfileFile.empty(); 1971 bool UsingProfile = UsingSampleProfile || 1972 (Opts.getProfileUse() != CodeGenOptions::ProfileNone); 1973 1974 if (Opts.DiagnosticsWithHotness && !UsingProfile && 1975 // An IR file will contain PGO as metadata 1976 IK.getLanguage() != Language::LLVM_IR) 1977 Diags.Report(diag::warn_drv_diagnostics_hotness_requires_pgo) 1978 << "-fdiagnostics-show-hotness"; 1979 1980 // Parse remarks hotness threshold. Valid value is either integer or 'auto'. 1981 if (auto *arg = 1982 Args.getLastArg(options::OPT_fdiagnostics_hotness_threshold_EQ)) { 1983 auto ResultOrErr = 1984 llvm::remarks::parseHotnessThresholdOption(arg->getValue()); 1985 1986 if (!ResultOrErr) { 1987 Diags.Report(diag::err_drv_invalid_diagnotics_hotness_threshold) 1988 << "-fdiagnostics-hotness-threshold="; 1989 } else { 1990 Opts.DiagnosticsHotnessThreshold = *ResultOrErr; 1991 if ((!Opts.DiagnosticsHotnessThreshold || 1992 *Opts.DiagnosticsHotnessThreshold > 0) && 1993 !UsingProfile) 1994 Diags.Report(diag::warn_drv_diagnostics_hotness_requires_pgo) 1995 << "-fdiagnostics-hotness-threshold="; 1996 } 1997 } 1998 1999 if (auto *arg = 2000 Args.getLastArg(options::OPT_fdiagnostics_misexpect_tolerance_EQ)) { 2001 auto ResultOrErr = parseToleranceOption(arg->getValue()); 2002 2003 if (!ResultOrErr) { 2004 Diags.Report(diag::err_drv_invalid_diagnotics_misexpect_tolerance) 2005 << "-fdiagnostics-misexpect-tolerance="; 2006 } else { 2007 Opts.DiagnosticsMisExpectTolerance = *ResultOrErr; 2008 if ((!Opts.DiagnosticsMisExpectTolerance || 2009 *Opts.DiagnosticsMisExpectTolerance > 0) && 2010 !UsingProfile) 2011 Diags.Report(diag::warn_drv_diagnostics_misexpect_requires_pgo) 2012 << "-fdiagnostics-misexpect-tolerance="; 2013 } 2014 } 2015 2016 // If the user requested to use a sample profile for PGO, then the 2017 // backend will need to track source location information so the profile 2018 // can be incorporated into the IR. 2019 if (UsingSampleProfile) 2020 NeedLocTracking = true; 2021 2022 if (!Opts.StackUsageOutput.empty()) 2023 NeedLocTracking = true; 2024 2025 // If the user requested a flag that requires source locations available in 2026 // the backend, make sure that the backend tracks source location information. 2027 if (NeedLocTracking && Opts.getDebugInfo() == codegenoptions::NoDebugInfo) 2028 Opts.setDebugInfo(codegenoptions::LocTrackingOnly); 2029 2030 // Parse -fsanitize-recover= arguments. 2031 // FIXME: Report unrecoverable sanitizers incorrectly specified here. 2032 parseSanitizerKinds("-fsanitize-recover=", 2033 Args.getAllArgValues(OPT_fsanitize_recover_EQ), Diags, 2034 Opts.SanitizeRecover); 2035 parseSanitizerKinds("-fsanitize-trap=", 2036 Args.getAllArgValues(OPT_fsanitize_trap_EQ), Diags, 2037 Opts.SanitizeTrap); 2038 2039 Opts.EmitVersionIdentMetadata = Args.hasFlag(OPT_Qy, OPT_Qn, true); 2040 2041 if (Args.hasArg(options::OPT_ffinite_loops)) 2042 Opts.FiniteLoops = CodeGenOptions::FiniteLoopsKind::Always; 2043 else if (Args.hasArg(options::OPT_fno_finite_loops)) 2044 Opts.FiniteLoops = CodeGenOptions::FiniteLoopsKind::Never; 2045 2046 Opts.EmitIEEENaNCompliantInsts = Args.hasFlag( 2047 options::OPT_mamdgpu_ieee, options::OPT_mno_amdgpu_ieee, true); 2048 if (!Opts.EmitIEEENaNCompliantInsts && !LangOptsRef.NoHonorNaNs) 2049 Diags.Report(diag::err_drv_amdgpu_ieee_without_no_honor_nans); 2050 2051 return Diags.getNumErrors() == NumErrorsBefore; 2052} 2053 2054static void 2055GenerateDependencyOutputArgs(const DependencyOutputOptions &Opts, 2056 SmallVectorImpl<const char *> &Args, 2057 CompilerInvocation::StringAllocator SA) { 2058 const DependencyOutputOptions &DependencyOutputOpts = Opts; 2059#define DEPENDENCY_OUTPUT_OPTION_WITH_MARSHALLING( \ 2060 PREFIX_TYPE, NAME, ID, KIND, GROUP, ALIAS, ALIASARGS, FLAGS, PARAM, \ 2061 HELPTEXT, METAVAR, VALUES, SPELLING, SHOULD_PARSE, ALWAYS_EMIT, KEYPATH, \ 2062 DEFAULT_VALUE, IMPLIED_CHECK, IMPLIED_VALUE, NORMALIZER, DENORMALIZER, \ 2063 MERGER, EXTRACTOR, TABLE_INDEX) \ 2064 GENERATE_OPTION_WITH_MARSHALLING( \ 2065 Args, SA, KIND, FLAGS, SPELLING, ALWAYS_EMIT, KEYPATH, DEFAULT_VALUE, \ 2066 IMPLIED_CHECK, IMPLIED_VALUE, DENORMALIZER, EXTRACTOR, TABLE_INDEX) 2067#include "clang/Driver/Options.inc" 2068#undef DEPENDENCY_OUTPUT_OPTION_WITH_MARSHALLING 2069 2070 if (Opts.ShowIncludesDest != ShowIncludesDestination::None) 2071 GenerateArg(Args, OPT_show_includes, SA); 2072 2073 for (const auto &Dep : Opts.ExtraDeps) { 2074 switch (Dep.second) { 2075 case EDK_SanitizeIgnorelist: 2076 // Sanitizer ignorelist arguments are generated from LanguageOptions. 2077 continue; 2078 case EDK_ModuleFile: 2079 // Module file arguments are generated from FrontendOptions and 2080 // HeaderSearchOptions. 2081 continue; 2082 case EDK_ProfileList: 2083 // Profile list arguments are generated from LanguageOptions via the 2084 // marshalling infrastructure. 2085 continue; 2086 case EDK_DepFileEntry: 2087 GenerateArg(Args, OPT_fdepfile_entry, Dep.first, SA); 2088 break; 2089 } 2090 } 2091} 2092 2093static bool ParseDependencyOutputArgs(DependencyOutputOptions &Opts, 2094 ArgList &Args, DiagnosticsEngine &Diags, 2095 frontend::ActionKind Action, 2096 bool ShowLineMarkers) { 2097 unsigned NumErrorsBefore = Diags.getNumErrors(); 2098 2099 DependencyOutputOptions &DependencyOutputOpts = Opts; 2100#define DEPENDENCY_OUTPUT_OPTION_WITH_MARSHALLING( \ 2101 PREFIX_TYPE, NAME, ID, KIND, GROUP, ALIAS, ALIASARGS, FLAGS, PARAM, \ 2102 HELPTEXT, METAVAR, VALUES, SPELLING, SHOULD_PARSE, ALWAYS_EMIT, KEYPATH, \ 2103 DEFAULT_VALUE, IMPLIED_CHECK, IMPLIED_VALUE, NORMALIZER, DENORMALIZER, \ 2104 MERGER, EXTRACTOR, TABLE_INDEX) \ 2105 PARSE_OPTION_WITH_MARSHALLING( \ 2106 Args, Diags, ID, FLAGS, PARAM, SHOULD_PARSE, KEYPATH, DEFAULT_VALUE, \ 2107 IMPLIED_CHECK, IMPLIED_VALUE, NORMALIZER, MERGER, TABLE_INDEX) 2108#include "clang/Driver/Options.inc" 2109#undef DEPENDENCY_OUTPUT_OPTION_WITH_MARSHALLING 2110 2111 if (Args.hasArg(OPT_show_includes)) { 2112 // Writing both /showIncludes and preprocessor output to stdout 2113 // would produce interleaved output, so use stderr for /showIncludes. 2114 // This behaves the same as cl.exe, when /E, /EP or /P are passed. 2115 if (Action == frontend::PrintPreprocessedInput || !ShowLineMarkers) 2116 Opts.ShowIncludesDest = ShowIncludesDestination::Stderr; 2117 else 2118 Opts.ShowIncludesDest = ShowIncludesDestination::Stdout; 2119 } else { 2120 Opts.ShowIncludesDest = ShowIncludesDestination::None; 2121 } 2122 2123 // Add sanitizer ignorelists as extra dependencies. 2124 // They won't be discovered by the regular preprocessor, so 2125 // we let make / ninja to know about this implicit dependency. 2126 if (!Args.hasArg(OPT_fno_sanitize_ignorelist)) { 2127 for (const auto *A : Args.filtered(OPT_fsanitize_ignorelist_EQ)) { 2128 StringRef Val = A->getValue(); 2129 if (!Val.contains('=')) 2130 Opts.ExtraDeps.emplace_back(std::string(Val), EDK_SanitizeIgnorelist); 2131 } 2132 if (Opts.IncludeSystemHeaders) { 2133 for (const auto *A : Args.filtered(OPT_fsanitize_system_ignorelist_EQ)) { 2134 StringRef Val = A->getValue(); 2135 if (!Val.contains('=')) 2136 Opts.ExtraDeps.emplace_back(std::string(Val), EDK_SanitizeIgnorelist); 2137 } 2138 } 2139 } 2140 2141 // -fprofile-list= dependencies. 2142 for (const auto &Filename : Args.getAllArgValues(OPT_fprofile_list_EQ)) 2143 Opts.ExtraDeps.emplace_back(Filename, EDK_ProfileList); 2144 2145 // Propagate the extra dependencies. 2146 for (const auto *A : Args.filtered(OPT_fdepfile_entry)) 2147 Opts.ExtraDeps.emplace_back(A->getValue(), EDK_DepFileEntry); 2148 2149 // Only the -fmodule-file=<file> form. 2150 for (const auto *A : Args.filtered(OPT_fmodule_file)) { 2151 StringRef Val = A->getValue(); 2152 if (!Val.contains('=')) 2153 Opts.ExtraDeps.emplace_back(std::string(Val), EDK_ModuleFile); 2154 } 2155 2156 // Check for invalid combinations of header-include-format 2157 // and header-include-filtering. 2158 if ((Opts.HeaderIncludeFormat == HIFMT_Textual && 2159 Opts.HeaderIncludeFiltering != HIFIL_None) || 2160 (Opts.HeaderIncludeFormat == HIFMT_JSON && 2161 Opts.HeaderIncludeFiltering != HIFIL_Only_Direct_System)) 2162 Diags.Report(diag::err_drv_print_header_env_var_combination_cc1) 2163 << Args.getLastArg(OPT_header_include_format_EQ)->getValue() 2164 << Args.getLastArg(OPT_header_include_filtering_EQ)->getValue(); 2165 2166 return Diags.getNumErrors() == NumErrorsBefore; 2167} 2168 2169static bool parseShowColorsArgs(const ArgList &Args, bool DefaultColor) { 2170 // Color diagnostics default to auto ("on" if terminal supports) in the driver 2171 // but default to off in cc1, needing an explicit OPT_fdiagnostics_color. 2172 // Support both clang's -f[no-]color-diagnostics and gcc's 2173 // -f[no-]diagnostics-colors[=never|always|auto]. 2174 enum { 2175 Colors_On, 2176 Colors_Off, 2177 Colors_Auto 2178 } ShowColors = DefaultColor ? Colors_Auto : Colors_Off; 2179 for (auto *A : Args) { 2180 const Option &O = A->getOption(); 2181 if (O.matches(options::OPT_fcolor_diagnostics)) { 2182 ShowColors = Colors_On; 2183 } else if (O.matches(options::OPT_fno_color_diagnostics)) { 2184 ShowColors = Colors_Off; 2185 } else if (O.matches(options::OPT_fdiagnostics_color_EQ)) { 2186 StringRef Value(A->getValue()); 2187 if (Value == "always") 2188 ShowColors = Colors_On; 2189 else if (Value == "never") 2190 ShowColors = Colors_Off; 2191 else if (Value == "auto") 2192 ShowColors = Colors_Auto; 2193 } 2194 } 2195 return ShowColors == Colors_On || 2196 (ShowColors == Colors_Auto && 2197 llvm::sys::Process::StandardErrHasColors()); 2198} 2199 2200static bool checkVerifyPrefixes(const std::vector<std::string> &VerifyPrefixes, 2201 DiagnosticsEngine &Diags) { 2202 bool Success = true; 2203 for (const auto &Prefix : VerifyPrefixes) { 2204 // Every prefix must start with a letter and contain only alphanumeric 2205 // characters, hyphens, and underscores. 2206 auto BadChar = llvm::find_if(Prefix, [](char C) { 2207 return !isAlphanumeric(C) && C != '-' && C != '_'; 2208 }); 2209 if (BadChar != Prefix.end() || !isLetter(Prefix[0])) { 2210 Success = false; 2211 Diags.Report(diag::err_drv_invalid_value) << "-verify=" << Prefix; 2212 Diags.Report(diag::note_drv_verify_prefix_spelling); 2213 } 2214 } 2215 return Success; 2216} 2217 2218static void GenerateFileSystemArgs(const FileSystemOptions &Opts, 2219 SmallVectorImpl<const char *> &Args, 2220 CompilerInvocation::StringAllocator SA) { 2221 const FileSystemOptions &FileSystemOpts = Opts; 2222 2223#define FILE_SYSTEM_OPTION_WITH_MARSHALLING( \ 2224 PREFIX_TYPE, NAME, ID, KIND, GROUP, ALIAS, ALIASARGS, FLAGS, PARAM, \ 2225 HELPTEXT, METAVAR, VALUES, SPELLING, SHOULD_PARSE, ALWAYS_EMIT, KEYPATH, \ 2226 DEFAULT_VALUE, IMPLIED_CHECK, IMPLIED_VALUE, NORMALIZER, DENORMALIZER, \ 2227 MERGER, EXTRACTOR, TABLE_INDEX) \ 2228 GENERATE_OPTION_WITH_MARSHALLING( \ 2229 Args, SA, KIND, FLAGS, SPELLING, ALWAYS_EMIT, KEYPATH, DEFAULT_VALUE, \ 2230 IMPLIED_CHECK, IMPLIED_VALUE, DENORMALIZER, EXTRACTOR, TABLE_INDEX) 2231#include "clang/Driver/Options.inc" 2232#undef FILE_SYSTEM_OPTION_WITH_MARSHALLING 2233} 2234 2235static bool ParseFileSystemArgs(FileSystemOptions &Opts, const ArgList &Args, 2236 DiagnosticsEngine &Diags) { 2237 unsigned NumErrorsBefore = Diags.getNumErrors(); 2238 2239 FileSystemOptions &FileSystemOpts = Opts; 2240 2241#define FILE_SYSTEM_OPTION_WITH_MARSHALLING( \ 2242 PREFIX_TYPE, NAME, ID, KIND, GROUP, ALIAS, ALIASARGS, FLAGS, PARAM, \ 2243 HELPTEXT, METAVAR, VALUES, SPELLING, SHOULD_PARSE, ALWAYS_EMIT, KEYPATH, \ 2244 DEFAULT_VALUE, IMPLIED_CHECK, IMPLIED_VALUE, NORMALIZER, DENORMALIZER, \ 2245 MERGER, EXTRACTOR, TABLE_INDEX) \ 2246 PARSE_OPTION_WITH_MARSHALLING( \ 2247 Args, Diags, ID, FLAGS, PARAM, SHOULD_PARSE, KEYPATH, DEFAULT_VALUE, \ 2248 IMPLIED_CHECK, IMPLIED_VALUE, NORMALIZER, MERGER, TABLE_INDEX) 2249#include "clang/Driver/Options.inc" 2250#undef FILE_SYSTEM_OPTION_WITH_MARSHALLING 2251 2252 return Diags.getNumErrors() == NumErrorsBefore; 2253} 2254 2255static void GenerateMigratorArgs(const MigratorOptions &Opts, 2256 SmallVectorImpl<const char *> &Args, 2257 CompilerInvocation::StringAllocator SA) { 2258 const MigratorOptions &MigratorOpts = Opts; 2259#define MIGRATOR_OPTION_WITH_MARSHALLING( \ 2260 PREFIX_TYPE, NAME, ID, KIND, GROUP, ALIAS, ALIASARGS, FLAGS, PARAM, \ 2261 HELPTEXT, METAVAR, VALUES, SPELLING, SHOULD_PARSE, ALWAYS_EMIT, KEYPATH, \ 2262 DEFAULT_VALUE, IMPLIED_CHECK, IMPLIED_VALUE, NORMALIZER, DENORMALIZER, \ 2263 MERGER, EXTRACTOR, TABLE_INDEX) \ 2264 GENERATE_OPTION_WITH_MARSHALLING( \ 2265 Args, SA, KIND, FLAGS, SPELLING, ALWAYS_EMIT, KEYPATH, DEFAULT_VALUE, \ 2266 IMPLIED_CHECK, IMPLIED_VALUE, DENORMALIZER, EXTRACTOR, TABLE_INDEX) 2267#include "clang/Driver/Options.inc" 2268#undef MIGRATOR_OPTION_WITH_MARSHALLING 2269} 2270 2271static bool ParseMigratorArgs(MigratorOptions &Opts, const ArgList &Args, 2272 DiagnosticsEngine &Diags) { 2273 unsigned NumErrorsBefore = Diags.getNumErrors(); 2274 2275 MigratorOptions &MigratorOpts = Opts; 2276 2277#define MIGRATOR_OPTION_WITH_MARSHALLING( \ 2278 PREFIX_TYPE, NAME, ID, KIND, GROUP, ALIAS, ALIASARGS, FLAGS, PARAM, \ 2279 HELPTEXT, METAVAR, VALUES, SPELLING, SHOULD_PARSE, ALWAYS_EMIT, KEYPATH, \ 2280 DEFAULT_VALUE, IMPLIED_CHECK, IMPLIED_VALUE, NORMALIZER, DENORMALIZER, \ 2281 MERGER, EXTRACTOR, TABLE_INDEX) \ 2282 PARSE_OPTION_WITH_MARSHALLING( \ 2283 Args, Diags, ID, FLAGS, PARAM, SHOULD_PARSE, KEYPATH, DEFAULT_VALUE, \ 2284 IMPLIED_CHECK, IMPLIED_VALUE, NORMALIZER, MERGER, TABLE_INDEX) 2285#include "clang/Driver/Options.inc" 2286#undef MIGRATOR_OPTION_WITH_MARSHALLING 2287 2288 return Diags.getNumErrors() == NumErrorsBefore; 2289} 2290 2291void CompilerInvocation::GenerateDiagnosticArgs( 2292 const DiagnosticOptions &Opts, SmallVectorImpl<const char *> &Args, 2293 StringAllocator SA, bool DefaultDiagColor) { 2294 const DiagnosticOptions *DiagnosticOpts = &Opts; 2295#define DIAG_OPTION_WITH_MARSHALLING( \ 2296 PREFIX_TYPE, NAME, ID, KIND, GROUP, ALIAS, ALIASARGS, FLAGS, PARAM, \ 2297 HELPTEXT, METAVAR, VALUES, SPELLING, SHOULD_PARSE, ALWAYS_EMIT, KEYPATH, \ 2298 DEFAULT_VALUE, IMPLIED_CHECK, IMPLIED_VALUE, NORMALIZER, DENORMALIZER, \ 2299 MERGER, EXTRACTOR, TABLE_INDEX) \ 2300 GENERATE_OPTION_WITH_MARSHALLING( \ 2301 Args, SA, KIND, FLAGS, SPELLING, ALWAYS_EMIT, KEYPATH, DEFAULT_VALUE, \ 2302 IMPLIED_CHECK, IMPLIED_VALUE, DENORMALIZER, EXTRACTOR, TABLE_INDEX) 2303#include "clang/Driver/Options.inc" 2304#undef DIAG_OPTION_WITH_MARSHALLING 2305 2306 if (!Opts.DiagnosticSerializationFile.empty()) 2307 GenerateArg(Args, OPT_diagnostic_serialized_file, 2308 Opts.DiagnosticSerializationFile, SA); 2309 2310 if (Opts.ShowColors) 2311 GenerateArg(Args, OPT_fcolor_diagnostics, SA); 2312 2313 if (Opts.VerifyDiagnostics && 2314 llvm::is_contained(Opts.VerifyPrefixes, "expected")) 2315 GenerateArg(Args, OPT_verify, SA); 2316 2317 for (const auto &Prefix : Opts.VerifyPrefixes) 2318 if (Prefix != "expected") 2319 GenerateArg(Args, OPT_verify_EQ, Prefix, SA); 2320 2321 DiagnosticLevelMask VIU = Opts.getVerifyIgnoreUnexpected(); 2322 if (VIU == DiagnosticLevelMask::None) { 2323 // This is the default, don't generate anything. 2324 } else if (VIU == DiagnosticLevelMask::All) { 2325 GenerateArg(Args, OPT_verify_ignore_unexpected, SA); 2326 } else { 2327 if (static_cast<unsigned>(VIU & DiagnosticLevelMask::Note) != 0) 2328 GenerateArg(Args, OPT_verify_ignore_unexpected_EQ, "note", SA); 2329 if (static_cast<unsigned>(VIU & DiagnosticLevelMask::Remark) != 0) 2330 GenerateArg(Args, OPT_verify_ignore_unexpected_EQ, "remark", SA); 2331 if (static_cast<unsigned>(VIU & DiagnosticLevelMask::Warning) != 0) 2332 GenerateArg(Args, OPT_verify_ignore_unexpected_EQ, "warning", SA); 2333 if (static_cast<unsigned>(VIU & DiagnosticLevelMask::Error) != 0) 2334 GenerateArg(Args, OPT_verify_ignore_unexpected_EQ, "error", SA); 2335 } 2336 2337 for (const auto &Warning : Opts.Warnings) { 2338 // This option is automatically generated from UndefPrefixes. 2339 if (Warning == "undef-prefix") 2340 continue; 2341 Args.push_back(SA(StringRef("-W") + Warning)); 2342 } 2343 2344 for (const auto &Remark : Opts.Remarks) { 2345 // These arguments are generated from OptimizationRemark fields of 2346 // CodeGenOptions. 2347 StringRef IgnoredRemarks[] = {"pass", "no-pass", 2348 "pass-analysis", "no-pass-analysis", 2349 "pass-missed", "no-pass-missed"}; 2350 if (llvm::is_contained(IgnoredRemarks, Remark)) 2351 continue; 2352 2353 Args.push_back(SA(StringRef("-R") + Remark)); 2354 } 2355} 2356 2357std::unique_ptr<DiagnosticOptions> 2358clang::CreateAndPopulateDiagOpts(ArrayRef<const char *> Argv) { 2359 auto DiagOpts = std::make_unique<DiagnosticOptions>(); 2360 unsigned MissingArgIndex, MissingArgCount; 2361 InputArgList Args = getDriverOptTable().ParseArgs( 2362 Argv.slice(1), MissingArgIndex, MissingArgCount); 2363 // We ignore MissingArgCount and the return value of ParseDiagnosticArgs. 2364 // Any errors that would be diagnosed here will also be diagnosed later, 2365 // when the DiagnosticsEngine actually exists. 2366 (void)ParseDiagnosticArgs(*DiagOpts, Args); 2367 return DiagOpts; 2368} 2369 2370bool clang::ParseDiagnosticArgs(DiagnosticOptions &Opts, ArgList &Args, 2371 DiagnosticsEngine *Diags, 2372 bool DefaultDiagColor) { 2373 std::optional<DiagnosticsEngine> IgnoringDiags; 2374 if (!Diags) { 2375 IgnoringDiags.emplace(new DiagnosticIDs(), new DiagnosticOptions(), 2376 new IgnoringDiagConsumer()); 2377 Diags = &*IgnoringDiags; 2378 } 2379 2380 unsigned NumErrorsBefore = Diags->getNumErrors(); 2381 2382 // The key paths of diagnostic options defined in Options.td start with 2383 // "DiagnosticOpts->". Let's provide the expected variable name and type. 2384 DiagnosticOptions *DiagnosticOpts = &Opts; 2385 2386#define DIAG_OPTION_WITH_MARSHALLING( \ 2387 PREFIX_TYPE, NAME, ID, KIND, GROUP, ALIAS, ALIASARGS, FLAGS, PARAM, \ 2388 HELPTEXT, METAVAR, VALUES, SPELLING, SHOULD_PARSE, ALWAYS_EMIT, KEYPATH, \ 2389 DEFAULT_VALUE, IMPLIED_CHECK, IMPLIED_VALUE, NORMALIZER, DENORMALIZER, \ 2390 MERGER, EXTRACTOR, TABLE_INDEX) \ 2391 PARSE_OPTION_WITH_MARSHALLING( \ 2392 Args, *Diags, ID, FLAGS, PARAM, SHOULD_PARSE, KEYPATH, DEFAULT_VALUE, \ 2393 IMPLIED_CHECK, IMPLIED_VALUE, NORMALIZER, MERGER, TABLE_INDEX) 2394#include "clang/Driver/Options.inc" 2395#undef DIAG_OPTION_WITH_MARSHALLING 2396 2397 llvm::sys::Process::UseANSIEscapeCodes(Opts.UseANSIEscapeCodes); 2398 2399 if (Arg *A = 2400 Args.getLastArg(OPT_diagnostic_serialized_file, OPT__serialize_diags)) 2401 Opts.DiagnosticSerializationFile = A->getValue(); 2402 Opts.ShowColors = parseShowColorsArgs(Args, DefaultDiagColor); 2403 2404 Opts.VerifyDiagnostics = Args.hasArg(OPT_verify) || Args.hasArg(OPT_verify_EQ); 2405 Opts.VerifyPrefixes = Args.getAllArgValues(OPT_verify_EQ); 2406 if (Args.hasArg(OPT_verify)) 2407 Opts.VerifyPrefixes.push_back("expected"); 2408 // Keep VerifyPrefixes in its original order for the sake of diagnostics, and 2409 // then sort it to prepare for fast lookup using std::binary_search. 2410 if (!checkVerifyPrefixes(Opts.VerifyPrefixes, *Diags)) 2411 Opts.VerifyDiagnostics = false; 2412 else 2413 llvm::sort(Opts.VerifyPrefixes); 2414 DiagnosticLevelMask DiagMask = DiagnosticLevelMask::None; 2415 parseDiagnosticLevelMask( 2416 "-verify-ignore-unexpected=", 2417 Args.getAllArgValues(OPT_verify_ignore_unexpected_EQ), *Diags, DiagMask); 2418 if (Args.hasArg(OPT_verify_ignore_unexpected)) 2419 DiagMask = DiagnosticLevelMask::All; 2420 Opts.setVerifyIgnoreUnexpected(DiagMask); 2421 if (Opts.TabStop == 0 || Opts.TabStop > DiagnosticOptions::MaxTabStop) { 2422 Opts.TabStop = DiagnosticOptions::DefaultTabStop; 2423 Diags->Report(diag::warn_ignoring_ftabstop_value) 2424 << Opts.TabStop << DiagnosticOptions::DefaultTabStop; 2425 } 2426 2427 addDiagnosticArgs(Args, OPT_W_Group, OPT_W_value_Group, Opts.Warnings); 2428 addDiagnosticArgs(Args, OPT_R_Group, OPT_R_value_Group, Opts.Remarks); 2429 2430 return Diags->getNumErrors() == NumErrorsBefore; 2431} 2432 2433/// Parse the argument to the -ftest-module-file-extension 2434/// command-line argument. 2435/// 2436/// \returns true on error, false on success. 2437static bool parseTestModuleFileExtensionArg(StringRef Arg, 2438 std::string &BlockName, 2439 unsigned &MajorVersion, 2440 unsigned &MinorVersion, 2441 bool &Hashed, 2442 std::string &UserInfo) { 2443 SmallVector<StringRef, 5> Args; 2444 Arg.split(Args, ':', 5); 2445 if (Args.size() < 5) 2446 return true; 2447 2448 BlockName = std::string(Args[0]); 2449 if (Args[1].getAsInteger(10, MajorVersion)) return true; 2450 if (Args[2].getAsInteger(10, MinorVersion)) return true; 2451 if (Args[3].getAsInteger(2, Hashed)) return true; 2452 if (Args.size() > 4) 2453 UserInfo = std::string(Args[4]); 2454 return false; 2455} 2456 2457/// Return a table that associates command line option specifiers with the 2458/// frontend action. Note: The pair {frontend::PluginAction, OPT_plugin} is 2459/// intentionally missing, as this case is handled separately from other 2460/// frontend options. 2461static const auto &getFrontendActionTable() { 2462 static const std::pair<frontend::ActionKind, unsigned> Table[] = { 2463 {frontend::ASTDeclList, OPT_ast_list}, 2464 2465 {frontend::ASTDump, OPT_ast_dump_all_EQ}, 2466 {frontend::ASTDump, OPT_ast_dump_all}, 2467 {frontend::ASTDump, OPT_ast_dump_EQ}, 2468 {frontend::ASTDump, OPT_ast_dump}, 2469 {frontend::ASTDump, OPT_ast_dump_lookups}, 2470 {frontend::ASTDump, OPT_ast_dump_decl_types}, 2471 2472 {frontend::ASTPrint, OPT_ast_print}, 2473 {frontend::ASTView, OPT_ast_view}, 2474 {frontend::DumpCompilerOptions, OPT_compiler_options_dump}, 2475 {frontend::DumpRawTokens, OPT_dump_raw_tokens}, 2476 {frontend::DumpTokens, OPT_dump_tokens}, 2477 {frontend::EmitAssembly, OPT_S}, 2478 {frontend::EmitBC, OPT_emit_llvm_bc}, 2479 {frontend::EmitHTML, OPT_emit_html}, 2480 {frontend::EmitLLVM, OPT_emit_llvm}, 2481 {frontend::EmitLLVMOnly, OPT_emit_llvm_only}, 2482 {frontend::EmitCodeGenOnly, OPT_emit_codegen_only}, 2483 {frontend::EmitObj, OPT_emit_obj}, 2484 {frontend::ExtractAPI, OPT_extract_api}, 2485 2486 {frontend::FixIt, OPT_fixit_EQ}, 2487 {frontend::FixIt, OPT_fixit}, 2488 2489 {frontend::GenerateModule, OPT_emit_module}, 2490 {frontend::GenerateModuleInterface, OPT_emit_module_interface}, 2491 {frontend::GenerateHeaderUnit, OPT_emit_header_unit}, 2492 {frontend::GeneratePCH, OPT_emit_pch}, 2493 {frontend::GenerateInterfaceStubs, OPT_emit_interface_stubs}, 2494 {frontend::InitOnly, OPT_init_only}, 2495 {frontend::ParseSyntaxOnly, OPT_fsyntax_only}, 2496 {frontend::ModuleFileInfo, OPT_module_file_info}, 2497 {frontend::VerifyPCH, OPT_verify_pch}, 2498 {frontend::PrintPreamble, OPT_print_preamble}, 2499 {frontend::PrintPreprocessedInput, OPT_E}, 2500 {frontend::TemplightDump, OPT_templight_dump}, 2501 {frontend::RewriteMacros, OPT_rewrite_macros}, 2502 {frontend::RewriteObjC, OPT_rewrite_objc}, 2503 {frontend::RewriteTest, OPT_rewrite_test}, 2504 {frontend::RunAnalysis, OPT_analyze}, 2505 {frontend::MigrateSource, OPT_migrate}, 2506 {frontend::RunPreprocessorOnly, OPT_Eonly}, 2507 {frontend::PrintDependencyDirectivesSourceMinimizerOutput, 2508 OPT_print_dependency_directives_minimized_source}, 2509 }; 2510 2511 return Table; 2512} 2513 2514/// Maps command line option to frontend action. 2515static std::optional<frontend::ActionKind> 2516getFrontendAction(OptSpecifier &Opt) { 2517 for (const auto &ActionOpt : getFrontendActionTable()) 2518 if (ActionOpt.second == Opt.getID()) 2519 return ActionOpt.first; 2520 2521 return std::nullopt; 2522} 2523 2524/// Maps frontend action to command line option. 2525static std::optional<OptSpecifier> 2526getProgramActionOpt(frontend::ActionKind ProgramAction) { 2527 for (const auto &ActionOpt : getFrontendActionTable()) 2528 if (ActionOpt.first == ProgramAction) 2529 return OptSpecifier(ActionOpt.second); 2530 2531 return std::nullopt; 2532} 2533 2534static void GenerateFrontendArgs(const FrontendOptions &Opts, 2535 SmallVectorImpl<const char *> &Args, 2536 CompilerInvocation::StringAllocator SA, 2537 bool IsHeader) { 2538 const FrontendOptions &FrontendOpts = Opts; 2539#define FRONTEND_OPTION_WITH_MARSHALLING( \ 2540 PREFIX_TYPE, NAME, ID, KIND, GROUP, ALIAS, ALIASARGS, FLAGS, PARAM, \ 2541 HELPTEXT, METAVAR, VALUES, SPELLING, SHOULD_PARSE, ALWAYS_EMIT, KEYPATH, \ 2542 DEFAULT_VALUE, IMPLIED_CHECK, IMPLIED_VALUE, NORMALIZER, DENORMALIZER, \ 2543 MERGER, EXTRACTOR, TABLE_INDEX) \ 2544 GENERATE_OPTION_WITH_MARSHALLING( \ 2545 Args, SA, KIND, FLAGS, SPELLING, ALWAYS_EMIT, KEYPATH, DEFAULT_VALUE, \ 2546 IMPLIED_CHECK, IMPLIED_VALUE, DENORMALIZER, EXTRACTOR, TABLE_INDEX) 2547#include "clang/Driver/Options.inc" 2548#undef FRONTEND_OPTION_WITH_MARSHALLING 2549 2550 std::optional<OptSpecifier> ProgramActionOpt = 2551 getProgramActionOpt(Opts.ProgramAction); 2552 2553 // Generating a simple flag covers most frontend actions. 2554 std::function<void()> GenerateProgramAction = [&]() { 2555 GenerateArg(Args, *ProgramActionOpt, SA); 2556 }; 2557 2558 if (!ProgramActionOpt) { 2559 // PluginAction is the only program action handled separately. 2560 assert(Opts.ProgramAction == frontend::PluginAction && 2561 "Frontend action without option."); 2562 GenerateProgramAction = [&]() { 2563 GenerateArg(Args, OPT_plugin, Opts.ActionName, SA); 2564 }; 2565 } 2566 2567 // FIXME: Simplify the complex 'AST dump' command line. 2568 if (Opts.ProgramAction == frontend::ASTDump) { 2569 GenerateProgramAction = [&]() { 2570 // ASTDumpLookups, ASTDumpDeclTypes and ASTDumpFilter are generated via 2571 // marshalling infrastructure. 2572 2573 if (Opts.ASTDumpFormat != ADOF_Default) { 2574 StringRef Format; 2575 switch (Opts.ASTDumpFormat) { 2576 case ADOF_Default: 2577 llvm_unreachable("Default AST dump format."); 2578 case ADOF_JSON: 2579 Format = "json"; 2580 break; 2581 } 2582 2583 if (Opts.ASTDumpAll) 2584 GenerateArg(Args, OPT_ast_dump_all_EQ, Format, SA); 2585 if (Opts.ASTDumpDecls) 2586 GenerateArg(Args, OPT_ast_dump_EQ, Format, SA); 2587 } else { 2588 if (Opts.ASTDumpAll) 2589 GenerateArg(Args, OPT_ast_dump_all, SA); 2590 if (Opts.ASTDumpDecls) 2591 GenerateArg(Args, OPT_ast_dump, SA); 2592 } 2593 }; 2594 } 2595 2596 if (Opts.ProgramAction == frontend::FixIt && !Opts.FixItSuffix.empty()) { 2597 GenerateProgramAction = [&]() { 2598 GenerateArg(Args, OPT_fixit_EQ, Opts.FixItSuffix, SA); 2599 }; 2600 } 2601 2602 GenerateProgramAction(); 2603 2604 for (const auto &PluginArgs : Opts.PluginArgs) { 2605 Option Opt = getDriverOptTable().getOption(OPT_plugin_arg); 2606 const char *Spelling = 2607 SA(Opt.getPrefix() + Opt.getName() + PluginArgs.first); 2608 for (const auto &PluginArg : PluginArgs.second) 2609 denormalizeString(Args, Spelling, SA, Opt.getKind(), 0, PluginArg); 2610 } 2611 2612 for (const auto &Ext : Opts.ModuleFileExtensions) 2613 if (auto *TestExt = dyn_cast_or_null<TestModuleFileExtension>(Ext.get())) 2614 GenerateArg(Args, OPT_ftest_module_file_extension_EQ, TestExt->str(), SA); 2615 2616 if (!Opts.CodeCompletionAt.FileName.empty()) 2617 GenerateArg(Args, OPT_code_completion_at, Opts.CodeCompletionAt.ToString(), 2618 SA); 2619 2620 for (const auto &Plugin : Opts.Plugins) 2621 GenerateArg(Args, OPT_load, Plugin, SA); 2622 2623 // ASTDumpDecls and ASTDumpAll already handled with ProgramAction. 2624 2625 for (const auto &ModuleFile : Opts.ModuleFiles) 2626 GenerateArg(Args, OPT_fmodule_file, ModuleFile, SA); 2627 2628 if (Opts.AuxTargetCPU) 2629 GenerateArg(Args, OPT_aux_target_cpu, *Opts.AuxTargetCPU, SA); 2630 2631 if (Opts.AuxTargetFeatures) 2632 for (const auto &Feature : *Opts.AuxTargetFeatures) 2633 GenerateArg(Args, OPT_aux_target_feature, Feature, SA); 2634 2635 { 2636 StringRef Preprocessed = Opts.DashX.isPreprocessed() ? "-cpp-output" : ""; 2637 StringRef ModuleMap = 2638 Opts.DashX.getFormat() == InputKind::ModuleMap ? "-module-map" : ""; 2639 StringRef HeaderUnit = ""; 2640 switch (Opts.DashX.getHeaderUnitKind()) { 2641 case InputKind::HeaderUnit_None: 2642 break; 2643 case InputKind::HeaderUnit_User: 2644 HeaderUnit = "-user"; 2645 break; 2646 case InputKind::HeaderUnit_System: 2647 HeaderUnit = "-system"; 2648 break; 2649 case InputKind::HeaderUnit_Abs: 2650 HeaderUnit = "-header-unit"; 2651 break; 2652 } 2653 StringRef Header = IsHeader ? "-header" : ""; 2654 2655 StringRef Lang; 2656 switch (Opts.DashX.getLanguage()) { 2657 case Language::C: 2658 Lang = "c"; 2659 break; 2660 case Language::OpenCL: 2661 Lang = "cl"; 2662 break; 2663 case Language::OpenCLCXX: 2664 Lang = "clcpp"; 2665 break; 2666 case Language::CUDA: 2667 Lang = "cuda"; 2668 break; 2669 case Language::HIP: 2670 Lang = "hip"; 2671 break; 2672 case Language::CXX: 2673 Lang = "c++"; 2674 break; 2675 case Language::ObjC: 2676 Lang = "objective-c"; 2677 break; 2678 case Language::ObjCXX: 2679 Lang = "objective-c++"; 2680 break; 2681 case Language::RenderScript: 2682 Lang = "renderscript"; 2683 break; 2684 case Language::Asm: 2685 Lang = "assembler-with-cpp"; 2686 break; 2687 case Language::Unknown: 2688 assert(Opts.DashX.getFormat() == InputKind::Precompiled && 2689 "Generating -x argument for unknown language (not precompiled)."); 2690 Lang = "ast"; 2691 break; 2692 case Language::LLVM_IR: 2693 Lang = "ir"; 2694 break; 2695 case Language::HLSL: 2696 Lang = "hlsl"; 2697 break; 2698 } 2699 2700 GenerateArg(Args, OPT_x, 2701 Lang + HeaderUnit + Header + ModuleMap + Preprocessed, SA); 2702 } 2703 2704 // OPT_INPUT has a unique class, generate it directly. 2705 for (const auto &Input : Opts.Inputs) 2706 Args.push_back(SA(Input.getFile())); 2707} 2708 2709static bool ParseFrontendArgs(FrontendOptions &Opts, ArgList &Args, 2710 DiagnosticsEngine &Diags, bool &IsHeaderFile) { 2711 unsigned NumErrorsBefore = Diags.getNumErrors(); 2712 2713 FrontendOptions &FrontendOpts = Opts; 2714 2715#define FRONTEND_OPTION_WITH_MARSHALLING( \ 2716 PREFIX_TYPE, NAME, ID, KIND, GROUP, ALIAS, ALIASARGS, FLAGS, PARAM, \ 2717 HELPTEXT, METAVAR, VALUES, SPELLING, SHOULD_PARSE, ALWAYS_EMIT, KEYPATH, \ 2718 DEFAULT_VALUE, IMPLIED_CHECK, IMPLIED_VALUE, NORMALIZER, DENORMALIZER, \ 2719 MERGER, EXTRACTOR, TABLE_INDEX) \ 2720 PARSE_OPTION_WITH_MARSHALLING( \ 2721 Args, Diags, ID, FLAGS, PARAM, SHOULD_PARSE, KEYPATH, DEFAULT_VALUE, \ 2722 IMPLIED_CHECK, IMPLIED_VALUE, NORMALIZER, MERGER, TABLE_INDEX) 2723#include "clang/Driver/Options.inc" 2724#undef FRONTEND_OPTION_WITH_MARSHALLING 2725 2726 Opts.ProgramAction = frontend::ParseSyntaxOnly; 2727 if (const Arg *A = Args.getLastArg(OPT_Action_Group)) { 2728 OptSpecifier Opt = OptSpecifier(A->getOption().getID()); 2729 std::optional<frontend::ActionKind> ProgramAction = getFrontendAction(Opt); 2730 assert(ProgramAction && "Option specifier not in Action_Group."); 2731 2732 if (ProgramAction == frontend::ASTDump && 2733 (Opt == OPT_ast_dump_all_EQ || Opt == OPT_ast_dump_EQ)) { 2734 unsigned Val = llvm::StringSwitch<unsigned>(A->getValue()) 2735 .CaseLower("default", ADOF_Default) 2736 .CaseLower("json", ADOF_JSON) 2737 .Default(std::numeric_limits<unsigned>::max()); 2738 2739 if (Val != std::numeric_limits<unsigned>::max()) 2740 Opts.ASTDumpFormat = static_cast<ASTDumpOutputFormat>(Val); 2741 else { 2742 Diags.Report(diag::err_drv_invalid_value) 2743 << A->getAsString(Args) << A->getValue(); 2744 Opts.ASTDumpFormat = ADOF_Default; 2745 } 2746 } 2747 2748 if (ProgramAction == frontend::FixIt && Opt == OPT_fixit_EQ) 2749 Opts.FixItSuffix = A->getValue(); 2750 2751 if (ProgramAction == frontend::GenerateInterfaceStubs) { 2752 StringRef ArgStr = 2753 Args.hasArg(OPT_interface_stub_version_EQ) 2754 ? Args.getLastArgValue(OPT_interface_stub_version_EQ) 2755 : "ifs-v1"; 2756 if (ArgStr == "experimental-yaml-elf-v1" || 2757 ArgStr == "experimental-ifs-v1" || ArgStr == "experimental-ifs-v2" || 2758 ArgStr == "experimental-tapi-elf-v1") { 2759 std::string ErrorMessage = 2760 "Invalid interface stub format: " + ArgStr.str() + 2761 " is deprecated."; 2762 Diags.Report(diag::err_drv_invalid_value) 2763 << "Must specify a valid interface stub format type, ie: " 2764 "-interface-stub-version=ifs-v1" 2765 << ErrorMessage; 2766 ProgramAction = frontend::ParseSyntaxOnly; 2767 } else if (!ArgStr.startswith("ifs-")) { 2768 std::string ErrorMessage = 2769 "Invalid interface stub format: " + ArgStr.str() + "."; 2770 Diags.Report(diag::err_drv_invalid_value) 2771 << "Must specify a valid interface stub format type, ie: " 2772 "-interface-stub-version=ifs-v1" 2773 << ErrorMessage; 2774 ProgramAction = frontend::ParseSyntaxOnly; 2775 } 2776 } 2777 2778 Opts.ProgramAction = *ProgramAction; 2779 } 2780 2781 if (const Arg* A = Args.getLastArg(OPT_plugin)) { 2782 Opts.Plugins.emplace_back(A->getValue(0)); 2783 Opts.ProgramAction = frontend::PluginAction; 2784 Opts.ActionName = A->getValue(); 2785 } 2786 for (const auto *AA : Args.filtered(OPT_plugin_arg)) 2787 Opts.PluginArgs[AA->getValue(0)].emplace_back(AA->getValue(1)); 2788 2789 for (const std::string &Arg : 2790 Args.getAllArgValues(OPT_ftest_module_file_extension_EQ)) { 2791 std::string BlockName; 2792 unsigned MajorVersion; 2793 unsigned MinorVersion; 2794 bool Hashed; 2795 std::string UserInfo; 2796 if (parseTestModuleFileExtensionArg(Arg, BlockName, MajorVersion, 2797 MinorVersion, Hashed, UserInfo)) { 2798 Diags.Report(diag::err_test_module_file_extension_format) << Arg; 2799 2800 continue; 2801 } 2802 2803 // Add the testing module file extension. 2804 Opts.ModuleFileExtensions.push_back( 2805 std::make_shared<TestModuleFileExtension>( 2806 BlockName, MajorVersion, MinorVersion, Hashed, UserInfo)); 2807 } 2808 2809 if (const Arg *A = Args.getLastArg(OPT_code_completion_at)) { 2810 Opts.CodeCompletionAt = 2811 ParsedSourceLocation::FromString(A->getValue()); 2812 if (Opts.CodeCompletionAt.FileName.empty()) 2813 Diags.Report(diag::err_drv_invalid_value) 2814 << A->getAsString(Args) << A->getValue(); 2815 } 2816 2817 Opts.Plugins = Args.getAllArgValues(OPT_load); 2818 Opts.ASTDumpDecls = Args.hasArg(OPT_ast_dump, OPT_ast_dump_EQ); 2819 Opts.ASTDumpAll = Args.hasArg(OPT_ast_dump_all, OPT_ast_dump_all_EQ); 2820 // Only the -fmodule-file=<file> form. 2821 for (const auto *A : Args.filtered(OPT_fmodule_file)) { 2822 StringRef Val = A->getValue(); 2823 if (!Val.contains('=')) 2824 Opts.ModuleFiles.push_back(std::string(Val)); 2825 } 2826 2827 if (Opts.ProgramAction != frontend::GenerateModule && Opts.IsSystemModule) 2828 Diags.Report(diag::err_drv_argument_only_allowed_with) << "-fsystem-module" 2829 << "-emit-module"; 2830 2831 if (Args.hasArg(OPT_aux_target_cpu)) 2832 Opts.AuxTargetCPU = std::string(Args.getLastArgValue(OPT_aux_target_cpu)); 2833 if (Args.hasArg(OPT_aux_target_feature)) 2834 Opts.AuxTargetFeatures = Args.getAllArgValues(OPT_aux_target_feature); 2835 2836 if (Opts.ARCMTAction != FrontendOptions::ARCMT_None && 2837 Opts.ObjCMTAction != FrontendOptions::ObjCMT_None) { 2838 Diags.Report(diag::err_drv_argument_not_allowed_with) 2839 << "ARC migration" << "ObjC migration"; 2840 } 2841 2842 InputKind DashX(Language::Unknown); 2843 if (const Arg *A = Args.getLastArg(OPT_x)) { 2844 StringRef XValue = A->getValue(); 2845 2846 // Parse suffixes: 2847 // '<lang>(-[{header-unit,user,system}-]header|[-module-map][-cpp-output])'. 2848 // FIXME: Supporting '<lang>-header-cpp-output' would be useful. 2849 bool Preprocessed = XValue.consume_back("-cpp-output"); 2850 bool ModuleMap = XValue.consume_back("-module-map"); 2851 // Detect and consume the header indicator. 2852 bool IsHeader = 2853 XValue != "precompiled-header" && XValue.consume_back("-header"); 2854 2855 // If we have c++-{user,system}-header, that indicates a header unit input 2856 // likewise, if the user put -fmodule-header together with a header with an 2857 // absolute path (header-unit-header). 2858 InputKind::HeaderUnitKind HUK = InputKind::HeaderUnit_None; 2859 if (IsHeader || Preprocessed) { 2860 if (XValue.consume_back("-header-unit")) 2861 HUK = InputKind::HeaderUnit_Abs; 2862 else if (XValue.consume_back("-system")) 2863 HUK = InputKind::HeaderUnit_System; 2864 else if (XValue.consume_back("-user")) 2865 HUK = InputKind::HeaderUnit_User; 2866 } 2867 2868 // The value set by this processing is an un-preprocessed source which is 2869 // not intended to be a module map or header unit. 2870 IsHeaderFile = IsHeader && !Preprocessed && !ModuleMap && 2871 HUK == InputKind::HeaderUnit_None; 2872 2873 // Principal languages. 2874 DashX = llvm::StringSwitch<InputKind>(XValue) 2875 .Case("c", Language::C) 2876 .Case("cl", Language::OpenCL) 2877 .Case("clcpp", Language::OpenCLCXX) 2878 .Case("cuda", Language::CUDA) 2879 .Case("hip", Language::HIP) 2880 .Case("c++", Language::CXX) 2881 .Case("objective-c", Language::ObjC) 2882 .Case("objective-c++", Language::ObjCXX) 2883 .Case("renderscript", Language::RenderScript) 2884 .Case("hlsl", Language::HLSL) 2885 .Default(Language::Unknown); 2886 2887 // "objc[++]-cpp-output" is an acceptable synonym for 2888 // "objective-c[++]-cpp-output". 2889 if (DashX.isUnknown() && Preprocessed && !IsHeaderFile && !ModuleMap && 2890 HUK == InputKind::HeaderUnit_None) 2891 DashX = llvm::StringSwitch<InputKind>(XValue) 2892 .Case("objc", Language::ObjC) 2893 .Case("objc++", Language::ObjCXX) 2894 .Default(Language::Unknown); 2895 2896 // Some special cases cannot be combined with suffixes. 2897 if (DashX.isUnknown() && !Preprocessed && !IsHeaderFile && !ModuleMap && 2898 HUK == InputKind::HeaderUnit_None) 2899 DashX = llvm::StringSwitch<InputKind>(XValue) 2900 .Case("cpp-output", InputKind(Language::C).getPreprocessed()) 2901 .Case("assembler-with-cpp", Language::Asm) 2902 .Cases("ast", "pcm", "precompiled-header", 2903 InputKind(Language::Unknown, InputKind::Precompiled)) 2904 .Case("ir", Language::LLVM_IR) 2905 .Default(Language::Unknown); 2906 2907 if (DashX.isUnknown()) 2908 Diags.Report(diag::err_drv_invalid_value) 2909 << A->getAsString(Args) << A->getValue(); 2910 2911 if (Preprocessed) 2912 DashX = DashX.getPreprocessed(); 2913 // A regular header is considered mutually exclusive with a header unit. 2914 if (HUK != InputKind::HeaderUnit_None) { 2915 DashX = DashX.withHeaderUnit(HUK); 2916 IsHeaderFile = true; 2917 } else if (IsHeaderFile) 2918 DashX = DashX.getHeader(); 2919 if (ModuleMap) 2920 DashX = DashX.withFormat(InputKind::ModuleMap); 2921 } 2922 2923 // '-' is the default input if none is given. 2924 std::vector<std::string> Inputs = Args.getAllArgValues(OPT_INPUT); 2925 Opts.Inputs.clear(); 2926 if (Inputs.empty()) 2927 Inputs.push_back("-"); 2928 2929 if (DashX.getHeaderUnitKind() != InputKind::HeaderUnit_None && 2930 Inputs.size() > 1) 2931 Diags.Report(diag::err_drv_header_unit_extra_inputs) << Inputs[1]; 2932 2933 for (unsigned i = 0, e = Inputs.size(); i != e; ++i) { 2934 InputKind IK = DashX; 2935 if (IK.isUnknown()) { 2936 IK = FrontendOptions::getInputKindForExtension( 2937 StringRef(Inputs[i]).rsplit('.').second); 2938 // FIXME: Warn on this? 2939 if (IK.isUnknown()) 2940 IK = Language::C; 2941 // FIXME: Remove this hack. 2942 if (i == 0) 2943 DashX = IK; 2944 } 2945 2946 bool IsSystem = false; 2947 2948 // The -emit-module action implicitly takes a module map. 2949 if (Opts.ProgramAction == frontend::GenerateModule && 2950 IK.getFormat() == InputKind::Source) { 2951 IK = IK.withFormat(InputKind::ModuleMap); 2952 IsSystem = Opts.IsSystemModule; 2953 } 2954 2955 Opts.Inputs.emplace_back(std::move(Inputs[i]), IK, IsSystem); 2956 } 2957 2958 Opts.DashX = DashX; 2959 2960 return Diags.getNumErrors() == NumErrorsBefore; 2961} 2962 2963std::string CompilerInvocation::GetResourcesPath(const char *Argv0, 2964 void *MainAddr) { 2965 std::string ClangExecutable = 2966 llvm::sys::fs::getMainExecutable(Argv0, MainAddr); 2967 return Driver::GetResourcesPath(ClangExecutable, CLANG_RESOURCE_DIR); 2968} 2969 2970static void GenerateHeaderSearchArgs(HeaderSearchOptions &Opts, 2971 SmallVectorImpl<const char *> &Args, 2972 CompilerInvocation::StringAllocator SA) { 2973 const HeaderSearchOptions *HeaderSearchOpts = &Opts; 2974#define HEADER_SEARCH_OPTION_WITH_MARSHALLING( \ 2975 PREFIX_TYPE, NAME, ID, KIND, GROUP, ALIAS, ALIASARGS, FLAGS, PARAM, \ 2976 HELPTEXT, METAVAR, VALUES, SPELLING, SHOULD_PARSE, ALWAYS_EMIT, KEYPATH, \ 2977 DEFAULT_VALUE, IMPLIED_CHECK, IMPLIED_VALUE, NORMALIZER, DENORMALIZER, \ 2978 MERGER, EXTRACTOR, TABLE_INDEX) \ 2979 GENERATE_OPTION_WITH_MARSHALLING( \ 2980 Args, SA, KIND, FLAGS, SPELLING, ALWAYS_EMIT, KEYPATH, DEFAULT_VALUE, \ 2981 IMPLIED_CHECK, IMPLIED_VALUE, DENORMALIZER, EXTRACTOR, TABLE_INDEX) 2982#include "clang/Driver/Options.inc" 2983#undef HEADER_SEARCH_OPTION_WITH_MARSHALLING 2984 2985 if (Opts.UseLibcxx) 2986 GenerateArg(Args, OPT_stdlib_EQ, "libc++", SA); 2987 2988 if (!Opts.ModuleCachePath.empty()) 2989 GenerateArg(Args, OPT_fmodules_cache_path, Opts.ModuleCachePath, SA); 2990 2991 for (const auto &File : Opts.PrebuiltModuleFiles) 2992 GenerateArg(Args, OPT_fmodule_file, File.first + "=" + File.second, SA); 2993 2994 for (const auto &Path : Opts.PrebuiltModulePaths) 2995 GenerateArg(Args, OPT_fprebuilt_module_path, Path, SA); 2996 2997 for (const auto &Macro : Opts.ModulesIgnoreMacros) 2998 GenerateArg(Args, OPT_fmodules_ignore_macro, Macro.val(), SA); 2999 3000 auto Matches = [](const HeaderSearchOptions::Entry &Entry, 3001 llvm::ArrayRef<frontend::IncludeDirGroup> Groups, 3002 std::optional<bool> IsFramework, 3003 std::optional<bool> IgnoreSysRoot) { 3004 return llvm::is_contained(Groups, Entry.Group) && 3005 (!IsFramework || (Entry.IsFramework == *IsFramework)) && 3006 (!IgnoreSysRoot || (Entry.IgnoreSysRoot == *IgnoreSysRoot)); 3007 }; 3008 3009 auto It = Opts.UserEntries.begin(); 3010 auto End = Opts.UserEntries.end(); 3011 3012 // Add -I..., -F..., and -index-header-map options in order. 3013 for (; It < End && Matches(*It, {frontend::IndexHeaderMap, frontend::Angled}, 3014 std::nullopt, true); 3015 ++It) { 3016 OptSpecifier Opt = [It, Matches]() { 3017 if (Matches(*It, frontend::IndexHeaderMap, true, true)) 3018 return OPT_F; 3019 if (Matches(*It, frontend::IndexHeaderMap, false, true)) 3020 return OPT_I; 3021 if (Matches(*It, frontend::Angled, true, true)) 3022 return OPT_F; 3023 if (Matches(*It, frontend::Angled, false, true)) 3024 return OPT_I; 3025 llvm_unreachable("Unexpected HeaderSearchOptions::Entry."); 3026 }(); 3027 3028 if (It->Group == frontend::IndexHeaderMap) 3029 GenerateArg(Args, OPT_index_header_map, SA); 3030 GenerateArg(Args, Opt, It->Path, SA); 3031 }; 3032 3033 // Note: some paths that came from "[-iprefix=xx] -iwithprefixbefore=yy" may 3034 // have already been generated as "-I[xx]yy". If that's the case, their 3035 // position on command line was such that this has no semantic impact on 3036 // include paths. 3037 for (; It < End && 3038 Matches(*It, {frontend::After, frontend::Angled}, false, true); 3039 ++It) { 3040 OptSpecifier Opt = 3041 It->Group == frontend::After ? OPT_iwithprefix : OPT_iwithprefixbefore; 3042 GenerateArg(Args, Opt, It->Path, SA); 3043 } 3044 3045 // Note: Some paths that came from "-idirafter=xxyy" may have already been 3046 // generated as "-iwithprefix=xxyy". If that's the case, their position on 3047 // command line was such that this has no semantic impact on include paths. 3048 for (; It < End && Matches(*It, {frontend::After}, false, true); ++It) 3049 GenerateArg(Args, OPT_idirafter, It->Path, SA); 3050 for (; It < End && Matches(*It, {frontend::Quoted}, false, true); ++It) 3051 GenerateArg(Args, OPT_iquote, It->Path, SA); 3052 for (; It < End && Matches(*It, {frontend::System}, false, std::nullopt); 3053 ++It) 3054 GenerateArg(Args, It->IgnoreSysRoot ? OPT_isystem : OPT_iwithsysroot, 3055 It->Path, SA); 3056 for (; It < End && Matches(*It, {frontend::System}, true, true); ++It) 3057 GenerateArg(Args, OPT_iframework, It->Path, SA); 3058 for (; It < End && Matches(*It, {frontend::System}, true, false); ++It) 3059 GenerateArg(Args, OPT_iframeworkwithsysroot, It->Path, SA); 3060 3061 // Add the paths for the various language specific isystem flags. 3062 for (; It < End && Matches(*It, {frontend::CSystem}, false, true); ++It) 3063 GenerateArg(Args, OPT_c_isystem, It->Path, SA); 3064 for (; It < End && Matches(*It, {frontend::CXXSystem}, false, true); ++It) 3065 GenerateArg(Args, OPT_cxx_isystem, It->Path, SA); 3066 for (; It < End && Matches(*It, {frontend::ObjCSystem}, false, true); ++It) 3067 GenerateArg(Args, OPT_objc_isystem, It->Path, SA); 3068 for (; It < End && Matches(*It, {frontend::ObjCXXSystem}, false, true); ++It) 3069 GenerateArg(Args, OPT_objcxx_isystem, It->Path, SA); 3070 3071 // Add the internal paths from a driver that detects standard include paths. 3072 // Note: Some paths that came from "-internal-isystem" arguments may have 3073 // already been generated as "-isystem". If that's the case, their position on 3074 // command line was such that this has no semantic impact on include paths. 3075 for (; It < End && 3076 Matches(*It, {frontend::System, frontend::ExternCSystem}, false, true); 3077 ++It) { 3078 OptSpecifier Opt = It->Group == frontend::System 3079 ? OPT_internal_isystem 3080 : OPT_internal_externc_isystem; 3081 GenerateArg(Args, Opt, It->Path, SA); 3082 } 3083 3084 assert(It == End && "Unhandled HeaderSearchOption::Entry."); 3085 3086 // Add the path prefixes which are implicitly treated as being system headers. 3087 for (const auto &P : Opts.SystemHeaderPrefixes) { 3088 OptSpecifier Opt = P.IsSystemHeader ? OPT_system_header_prefix 3089 : OPT_no_system_header_prefix; 3090 GenerateArg(Args, Opt, P.Prefix, SA); 3091 } 3092 3093 for (const std::string &F : Opts.VFSOverlayFiles) 3094 GenerateArg(Args, OPT_ivfsoverlay, F, SA); 3095} 3096 3097static bool ParseHeaderSearchArgs(HeaderSearchOptions &Opts, ArgList &Args, 3098 DiagnosticsEngine &Diags, 3099 const std::string &WorkingDir) { 3100 unsigned NumErrorsBefore = Diags.getNumErrors(); 3101 3102 HeaderSearchOptions *HeaderSearchOpts = &Opts; 3103 3104#define HEADER_SEARCH_OPTION_WITH_MARSHALLING( \ 3105 PREFIX_TYPE, NAME, ID, KIND, GROUP, ALIAS, ALIASARGS, FLAGS, PARAM, \ 3106 HELPTEXT, METAVAR, VALUES, SPELLING, SHOULD_PARSE, ALWAYS_EMIT, KEYPATH, \ 3107 DEFAULT_VALUE, IMPLIED_CHECK, IMPLIED_VALUE, NORMALIZER, DENORMALIZER, \ 3108 MERGER, EXTRACTOR, TABLE_INDEX) \ 3109 PARSE_OPTION_WITH_MARSHALLING( \ 3110 Args, Diags, ID, FLAGS, PARAM, SHOULD_PARSE, KEYPATH, DEFAULT_VALUE, \ 3111 IMPLIED_CHECK, IMPLIED_VALUE, NORMALIZER, MERGER, TABLE_INDEX) 3112#include "clang/Driver/Options.inc" 3113#undef HEADER_SEARCH_OPTION_WITH_MARSHALLING 3114 3115 if (const Arg *A = Args.getLastArg(OPT_stdlib_EQ)) 3116 Opts.UseLibcxx = (strcmp(A->getValue(), "libc++") == 0); 3117 3118 // Canonicalize -fmodules-cache-path before storing it. 3119 SmallString<128> P(Args.getLastArgValue(OPT_fmodules_cache_path)); 3120 if (!(P.empty() || llvm::sys::path::is_absolute(P))) { 3121 if (WorkingDir.empty()) 3122 llvm::sys::fs::make_absolute(P); 3123 else 3124 llvm::sys::fs::make_absolute(WorkingDir, P); 3125 } 3126 llvm::sys::path::remove_dots(P); 3127 Opts.ModuleCachePath = std::string(P.str()); 3128 3129 // Only the -fmodule-file=<name>=<file> form. 3130 for (const auto *A : Args.filtered(OPT_fmodule_file)) { 3131 StringRef Val = A->getValue(); 3132 if (Val.contains('=')) { 3133 auto Split = Val.split('='); 3134 Opts.PrebuiltModuleFiles.insert( 3135 {std::string(Split.first), std::string(Split.second)}); 3136 } 3137 } 3138 for (const auto *A : Args.filtered(OPT_fprebuilt_module_path)) 3139 Opts.AddPrebuiltModulePath(A->getValue()); 3140 3141 for (const auto *A : Args.filtered(OPT_fmodules_ignore_macro)) { 3142 StringRef MacroDef = A->getValue(); 3143 Opts.ModulesIgnoreMacros.insert( 3144 llvm::CachedHashString(MacroDef.split('=').first)); 3145 } 3146 3147 // Add -I..., -F..., and -index-header-map options in order. 3148 bool IsIndexHeaderMap = false; 3149 bool IsSysrootSpecified = 3150 Args.hasArg(OPT__sysroot_EQ) || Args.hasArg(OPT_isysroot); 3151 for (const auto *A : Args.filtered(OPT_I, OPT_F, OPT_index_header_map)) { 3152 if (A->getOption().matches(OPT_index_header_map)) { 3153 // -index-header-map applies to the next -I or -F. 3154 IsIndexHeaderMap = true; 3155 continue; 3156 } 3157 3158 frontend::IncludeDirGroup Group = 3159 IsIndexHeaderMap ? frontend::IndexHeaderMap : frontend::Angled; 3160 3161 bool IsFramework = A->getOption().matches(OPT_F); 3162 std::string Path = A->getValue(); 3163 3164 if (IsSysrootSpecified && !IsFramework && A->getValue()[0] == '=') { 3165 SmallString<32> Buffer; 3166 llvm::sys::path::append(Buffer, Opts.Sysroot, 3167 llvm::StringRef(A->getValue()).substr(1)); 3168 Path = std::string(Buffer.str()); 3169 } 3170 3171 Opts.AddPath(Path, Group, IsFramework, 3172 /*IgnoreSysroot*/ true); 3173 IsIndexHeaderMap = false; 3174 } 3175 3176 // Add -iprefix/-iwithprefix/-iwithprefixbefore options. 3177 StringRef Prefix = ""; // FIXME: This isn't the correct default prefix. 3178 for (const auto *A : 3179 Args.filtered(OPT_iprefix, OPT_iwithprefix, OPT_iwithprefixbefore)) { 3180 if (A->getOption().matches(OPT_iprefix)) 3181 Prefix = A->getValue(); 3182 else if (A->getOption().matches(OPT_iwithprefix)) 3183 Opts.AddPath(Prefix.str() + A->getValue(), frontend::After, false, true); 3184 else 3185 Opts.AddPath(Prefix.str() + A->getValue(), frontend::Angled, false, true); 3186 } 3187 3188 for (const auto *A : Args.filtered(OPT_idirafter)) 3189 Opts.AddPath(A->getValue(), frontend::After, false, true); 3190 for (const auto *A : Args.filtered(OPT_iquote)) 3191 Opts.AddPath(A->getValue(), frontend::Quoted, false, true); 3192 for (const auto *A : Args.filtered(OPT_isystem, OPT_iwithsysroot)) 3193 Opts.AddPath(A->getValue(), frontend::System, false, 3194 !A->getOption().matches(OPT_iwithsysroot)); 3195 for (const auto *A : Args.filtered(OPT_iframework)) 3196 Opts.AddPath(A->getValue(), frontend::System, true, true); 3197 for (const auto *A : Args.filtered(OPT_iframeworkwithsysroot)) 3198 Opts.AddPath(A->getValue(), frontend::System, /*IsFramework=*/true, 3199 /*IgnoreSysRoot=*/false); 3200 3201 // Add the paths for the various language specific isystem flags. 3202 for (const auto *A : Args.filtered(OPT_c_isystem)) 3203 Opts.AddPath(A->getValue(), frontend::CSystem, false, true); 3204 for (const auto *A : Args.filtered(OPT_cxx_isystem)) 3205 Opts.AddPath(A->getValue(), frontend::CXXSystem, false, true); 3206 for (const auto *A : Args.filtered(OPT_objc_isystem)) 3207 Opts.AddPath(A->getValue(), frontend::ObjCSystem, false,true); 3208 for (const auto *A : Args.filtered(OPT_objcxx_isystem)) 3209 Opts.AddPath(A->getValue(), frontend::ObjCXXSystem, false, true); 3210 3211 // Add the internal paths from a driver that detects standard include paths. 3212 for (const auto *A : 3213 Args.filtered(OPT_internal_isystem, OPT_internal_externc_isystem)) { 3214 frontend::IncludeDirGroup Group = frontend::System; 3215 if (A->getOption().matches(OPT_internal_externc_isystem)) 3216 Group = frontend::ExternCSystem; 3217 Opts.AddPath(A->getValue(), Group, false, true); 3218 } 3219 3220 // Add the path prefixes which are implicitly treated as being system headers. 3221 for (const auto *A : 3222 Args.filtered(OPT_system_header_prefix, OPT_no_system_header_prefix)) 3223 Opts.AddSystemHeaderPrefix( 3224 A->getValue(), A->getOption().matches(OPT_system_header_prefix)); 3225 3226 for (const auto *A : Args.filtered(OPT_ivfsoverlay)) 3227 Opts.AddVFSOverlayFile(A->getValue()); 3228 3229 return Diags.getNumErrors() == NumErrorsBefore; 3230} 3231 3232/// Check if input file kind and language standard are compatible. 3233static bool IsInputCompatibleWithStandard(InputKind IK, 3234 const LangStandard &S) { 3235 switch (IK.getLanguage()) { 3236 case Language::Unknown: 3237 case Language::LLVM_IR: 3238 llvm_unreachable("should not parse language flags for this input"); 3239 3240 case Language::C: 3241 case Language::ObjC: 3242 case Language::RenderScript: 3243 return S.getLanguage() == Language::C; 3244 3245 case Language::OpenCL: 3246 return S.getLanguage() == Language::OpenCL || 3247 S.getLanguage() == Language::OpenCLCXX; 3248 3249 case Language::OpenCLCXX: 3250 return S.getLanguage() == Language::OpenCLCXX; 3251 3252 case Language::CXX: 3253 case Language::ObjCXX: 3254 return S.getLanguage() == Language::CXX; 3255 3256 case Language::CUDA: 3257 // FIXME: What -std= values should be permitted for CUDA compilations? 3258 return S.getLanguage() == Language::CUDA || 3259 S.getLanguage() == Language::CXX; 3260 3261 case Language::HIP: 3262 return S.getLanguage() == Language::CXX || S.getLanguage() == Language::HIP; 3263 3264 case Language::Asm: 3265 // Accept (and ignore) all -std= values. 3266 // FIXME: The -std= value is not ignored; it affects the tokenization 3267 // and preprocessing rules if we're preprocessing this asm input. 3268 return true; 3269 3270 case Language::HLSL: 3271 return S.getLanguage() == Language::HLSL; 3272 } 3273 3274 llvm_unreachable("unexpected input language"); 3275} 3276 3277/// Get language name for given input kind. 3278static StringRef GetInputKindName(InputKind IK) { 3279 switch (IK.getLanguage()) { 3280 case Language::C: 3281 return "C"; 3282 case Language::ObjC: 3283 return "Objective-C"; 3284 case Language::CXX: 3285 return "C++"; 3286 case Language::ObjCXX: 3287 return "Objective-C++"; 3288 case Language::OpenCL: 3289 return "OpenCL"; 3290 case Language::OpenCLCXX: 3291 return "C++ for OpenCL"; 3292 case Language::CUDA: 3293 return "CUDA"; 3294 case Language::RenderScript: 3295 return "RenderScript"; 3296 case Language::HIP: 3297 return "HIP"; 3298 3299 case Language::Asm: 3300 return "Asm"; 3301 case Language::LLVM_IR: 3302 return "LLVM IR"; 3303 3304 case Language::HLSL: 3305 return "HLSL"; 3306 3307 case Language::Unknown: 3308 break; 3309 } 3310 llvm_unreachable("unknown input language"); 3311} 3312 3313void CompilerInvocation::GenerateLangArgs(const LangOptions &Opts, 3314 SmallVectorImpl<const char *> &Args, 3315 StringAllocator SA, 3316 const llvm::Triple &T, InputKind IK) { 3317 if (IK.getFormat() == InputKind::Precompiled || 3318 IK.getLanguage() == Language::LLVM_IR) { 3319 if (Opts.ObjCAutoRefCount) 3320 GenerateArg(Args, OPT_fobjc_arc, SA); 3321 if (Opts.PICLevel != 0) 3322 GenerateArg(Args, OPT_pic_level, Twine(Opts.PICLevel), SA); 3323 if (Opts.PIE) 3324 GenerateArg(Args, OPT_pic_is_pie, SA); 3325 for (StringRef Sanitizer : serializeSanitizerKinds(Opts.Sanitize)) 3326 GenerateArg(Args, OPT_fsanitize_EQ, Sanitizer, SA); 3327 3328 return; 3329 } 3330 3331 OptSpecifier StdOpt; 3332 switch (Opts.LangStd) { 3333 case LangStandard::lang_opencl10: 3334 case LangStandard::lang_opencl11: 3335 case LangStandard::lang_opencl12: 3336 case LangStandard::lang_opencl20: 3337 case LangStandard::lang_opencl30: 3338 case LangStandard::lang_openclcpp10: 3339 case LangStandard::lang_openclcpp2021: 3340 StdOpt = OPT_cl_std_EQ; 3341 break; 3342 default: 3343 StdOpt = OPT_std_EQ; 3344 break; 3345 } 3346 3347 auto LangStandard = LangStandard::getLangStandardForKind(Opts.LangStd); 3348 GenerateArg(Args, StdOpt, LangStandard.getName(), SA); 3349 3350 if (Opts.IncludeDefaultHeader) 3351 GenerateArg(Args, OPT_finclude_default_header, SA); 3352 if (Opts.DeclareOpenCLBuiltins) 3353 GenerateArg(Args, OPT_fdeclare_opencl_builtins, SA); 3354 3355 const LangOptions *LangOpts = &Opts; 3356 3357#define LANG_OPTION_WITH_MARSHALLING( \ 3358 PREFIX_TYPE, NAME, ID, KIND, GROUP, ALIAS, ALIASARGS, FLAGS, PARAM, \ 3359 HELPTEXT, METAVAR, VALUES, SPELLING, SHOULD_PARSE, ALWAYS_EMIT, KEYPATH, \ 3360 DEFAULT_VALUE, IMPLIED_CHECK, IMPLIED_VALUE, NORMALIZER, DENORMALIZER, \ 3361 MERGER, EXTRACTOR, TABLE_INDEX) \ 3362 GENERATE_OPTION_WITH_MARSHALLING( \ 3363 Args, SA, KIND, FLAGS, SPELLING, ALWAYS_EMIT, KEYPATH, DEFAULT_VALUE, \ 3364 IMPLIED_CHECK, IMPLIED_VALUE, DENORMALIZER, EXTRACTOR, TABLE_INDEX) 3365#include "clang/Driver/Options.inc" 3366#undef LANG_OPTION_WITH_MARSHALLING 3367 3368 // The '-fcf-protection=' option is generated by CodeGenOpts generator. 3369 3370 if (Opts.ObjC) { 3371 GenerateArg(Args, OPT_fobjc_runtime_EQ, Opts.ObjCRuntime.getAsString(), SA); 3372 3373 if (Opts.GC == LangOptions::GCOnly) 3374 GenerateArg(Args, OPT_fobjc_gc_only, SA); 3375 else if (Opts.GC == LangOptions::HybridGC) 3376 GenerateArg(Args, OPT_fobjc_gc, SA); 3377 else if (Opts.ObjCAutoRefCount == 1) 3378 GenerateArg(Args, OPT_fobjc_arc, SA); 3379 3380 if (Opts.ObjCWeakRuntime) 3381 GenerateArg(Args, OPT_fobjc_runtime_has_weak, SA); 3382 3383 if (Opts.ObjCWeak) 3384 GenerateArg(Args, OPT_fobjc_weak, SA); 3385 3386 if (Opts.ObjCSubscriptingLegacyRuntime) 3387 GenerateArg(Args, OPT_fobjc_subscripting_legacy_runtime, SA); 3388 } 3389 3390 if (Opts.GNUCVersion != 0) { 3391 unsigned Major = Opts.GNUCVersion / 100 / 100; 3392 unsigned Minor = (Opts.GNUCVersion / 100) % 100; 3393 unsigned Patch = Opts.GNUCVersion % 100; 3394 GenerateArg(Args, OPT_fgnuc_version_EQ, 3395 Twine(Major) + "." + Twine(Minor) + "." + Twine(Patch), SA); 3396 } 3397 3398 if (Opts.IgnoreXCOFFVisibility) 3399 GenerateArg(Args, OPT_mignore_xcoff_visibility, SA); 3400 3401 if (Opts.SignedOverflowBehavior == LangOptions::SOB_Trapping) { 3402 GenerateArg(Args, OPT_ftrapv, SA); 3403 GenerateArg(Args, OPT_ftrapv_handler, Opts.OverflowHandler, SA); 3404 } else if (Opts.SignedOverflowBehavior == LangOptions::SOB_Defined) { 3405 GenerateArg(Args, OPT_fwrapv, SA); 3406 } 3407 3408 if (Opts.MSCompatibilityVersion != 0) { 3409 unsigned Major = Opts.MSCompatibilityVersion / 10000000; 3410 unsigned Minor = (Opts.MSCompatibilityVersion / 100000) % 100; 3411 unsigned Subminor = Opts.MSCompatibilityVersion % 100000; 3412 GenerateArg(Args, OPT_fms_compatibility_version, 3413 Twine(Major) + "." + Twine(Minor) + "." + Twine(Subminor), SA); 3414 } 3415 3416 if ((!Opts.GNUMode && !Opts.MSVCCompat && !Opts.CPlusPlus17) || T.isOSzOS()) { 3417 if (!Opts.Trigraphs) 3418 GenerateArg(Args, OPT_fno_trigraphs, SA); 3419 } else { 3420 if (Opts.Trigraphs) 3421 GenerateArg(Args, OPT_ftrigraphs, SA); 3422 } 3423 3424 if (Opts.Blocks && !(Opts.OpenCL && Opts.OpenCLVersion == 200)) 3425 GenerateArg(Args, OPT_fblocks, SA); 3426 3427 if (Opts.ConvergentFunctions && 3428 !(Opts.OpenCL || (Opts.CUDA && Opts.CUDAIsDevice) || Opts.SYCLIsDevice)) 3429 GenerateArg(Args, OPT_fconvergent_functions, SA); 3430 3431 if (Opts.NoBuiltin && !Opts.Freestanding) 3432 GenerateArg(Args, OPT_fno_builtin, SA); 3433 3434 if (!Opts.NoBuiltin) 3435 for (const auto &Func : Opts.NoBuiltinFuncs) 3436 GenerateArg(Args, OPT_fno_builtin_, Func, SA); 3437 3438 if (Opts.LongDoubleSize == 128) 3439 GenerateArg(Args, OPT_mlong_double_128, SA); 3440 else if (Opts.LongDoubleSize == 64) 3441 GenerateArg(Args, OPT_mlong_double_64, SA); 3442 else if (Opts.LongDoubleSize == 80) 3443 GenerateArg(Args, OPT_mlong_double_80, SA); 3444 3445 // Not generating '-mrtd', it's just an alias for '-fdefault-calling-conv='. 3446 3447 // OpenMP was requested via '-fopenmp', not implied by '-fopenmp-simd' or 3448 // '-fopenmp-targets='. 3449 if (Opts.OpenMP && !Opts.OpenMPSimd) { 3450 GenerateArg(Args, OPT_fopenmp, SA); 3451 3452 if (Opts.OpenMP != 50) 3453 GenerateArg(Args, OPT_fopenmp_version_EQ, Twine(Opts.OpenMP), SA); 3454 3455 if (!Opts.OpenMPUseTLS) 3456 GenerateArg(Args, OPT_fnoopenmp_use_tls, SA); 3457 3458 if (Opts.OpenMPIsDevice) 3459 GenerateArg(Args, OPT_fopenmp_is_device, SA); 3460 3461 if (Opts.OpenMPIRBuilder) 3462 GenerateArg(Args, OPT_fopenmp_enable_irbuilder, SA); 3463 } 3464 3465 if (Opts.OpenMPSimd) { 3466 GenerateArg(Args, OPT_fopenmp_simd, SA); 3467 3468 if (Opts.OpenMP != 50) 3469 GenerateArg(Args, OPT_fopenmp_version_EQ, Twine(Opts.OpenMP), SA); 3470 } 3471 3472 if (Opts.OpenMPThreadSubscription) 3473 GenerateArg(Args, OPT_fopenmp_assume_threads_oversubscription, SA); 3474 3475 if (Opts.OpenMPTeamSubscription) 3476 GenerateArg(Args, OPT_fopenmp_assume_teams_oversubscription, SA); 3477 3478 if (Opts.OpenMPTargetDebug != 0) 3479 GenerateArg(Args, OPT_fopenmp_target_debug_EQ, 3480 Twine(Opts.OpenMPTargetDebug), SA); 3481 3482 if (Opts.OpenMPCUDANumSMs != 0) 3483 GenerateArg(Args, OPT_fopenmp_cuda_number_of_sm_EQ, 3484 Twine(Opts.OpenMPCUDANumSMs), SA); 3485 3486 if (Opts.OpenMPCUDABlocksPerSM != 0) 3487 GenerateArg(Args, OPT_fopenmp_cuda_blocks_per_sm_EQ, 3488 Twine(Opts.OpenMPCUDABlocksPerSM), SA); 3489 3490 if (Opts.OpenMPCUDAReductionBufNum != 1024) 3491 GenerateArg(Args, OPT_fopenmp_cuda_teams_reduction_recs_num_EQ, 3492 Twine(Opts.OpenMPCUDAReductionBufNum), SA); 3493 3494 if (!Opts.OMPTargetTriples.empty()) { 3495 std::string Targets; 3496 llvm::raw_string_ostream OS(Targets); 3497 llvm::interleave( 3498 Opts.OMPTargetTriples, OS, 3499 [&OS](const llvm::Triple &T) { OS << T.str(); }, ","); 3500 GenerateArg(Args, OPT_fopenmp_targets_EQ, OS.str(), SA); 3501 } 3502 3503 if (!Opts.OMPHostIRFile.empty()) 3504 GenerateArg(Args, OPT_fopenmp_host_ir_file_path, Opts.OMPHostIRFile, SA); 3505 3506 if (Opts.OpenMPCUDAMode) 3507 GenerateArg(Args, OPT_fopenmp_cuda_mode, SA); 3508 3509 // The arguments used to set Optimize, OptimizeSize and NoInlineDefine are 3510 // generated from CodeGenOptions. 3511 3512 if (Opts.DefaultFPContractMode == LangOptions::FPM_Fast) 3513 GenerateArg(Args, OPT_ffp_contract, "fast", SA); 3514 else if (Opts.DefaultFPContractMode == LangOptions::FPM_On) 3515 GenerateArg(Args, OPT_ffp_contract, "on", SA); 3516 else if (Opts.DefaultFPContractMode == LangOptions::FPM_Off) 3517 GenerateArg(Args, OPT_ffp_contract, "off", SA); 3518 else if (Opts.DefaultFPContractMode == LangOptions::FPM_FastHonorPragmas) 3519 GenerateArg(Args, OPT_ffp_contract, "fast-honor-pragmas", SA); 3520 3521 for (StringRef Sanitizer : serializeSanitizerKinds(Opts.Sanitize)) 3522 GenerateArg(Args, OPT_fsanitize_EQ, Sanitizer, SA); 3523 3524 // Conflating '-fsanitize-system-ignorelist' and '-fsanitize-ignorelist'. 3525 for (const std::string &F : Opts.NoSanitizeFiles) 3526 GenerateArg(Args, OPT_fsanitize_ignorelist_EQ, F, SA); 3527 3528 if (Opts.getClangABICompat() == LangOptions::ClangABI::Ver3_8) 3529 GenerateArg(Args, OPT_fclang_abi_compat_EQ, "3.8", SA); 3530 else if (Opts.getClangABICompat() == LangOptions::ClangABI::Ver4) 3531 GenerateArg(Args, OPT_fclang_abi_compat_EQ, "4.0", SA); 3532 else if (Opts.getClangABICompat() == LangOptions::ClangABI::Ver6) 3533 GenerateArg(Args, OPT_fclang_abi_compat_EQ, "6.0", SA); 3534 else if (Opts.getClangABICompat() == LangOptions::ClangABI::Ver7) 3535 GenerateArg(Args, OPT_fclang_abi_compat_EQ, "7.0", SA); 3536 else if (Opts.getClangABICompat() == LangOptions::ClangABI::Ver9) 3537 GenerateArg(Args, OPT_fclang_abi_compat_EQ, "9.0", SA); 3538 else if (Opts.getClangABICompat() == LangOptions::ClangABI::Ver11) 3539 GenerateArg(Args, OPT_fclang_abi_compat_EQ, "11.0", SA); 3540 else if (Opts.getClangABICompat() == LangOptions::ClangABI::Ver12) 3541 GenerateArg(Args, OPT_fclang_abi_compat_EQ, "12.0", SA); 3542 else if (Opts.getClangABICompat() == LangOptions::ClangABI::Ver14) 3543 GenerateArg(Args, OPT_fclang_abi_compat_EQ, "14.0", SA); 3544 else if (Opts.getClangABICompat() == LangOptions::ClangABI::Ver15) 3545 GenerateArg(Args, OPT_fclang_abi_compat_EQ, "15.0", SA); 3546 3547 if (Opts.getSignReturnAddressScope() == 3548 LangOptions::SignReturnAddressScopeKind::All) 3549 GenerateArg(Args, OPT_msign_return_address_EQ, "all", SA); 3550 else if (Opts.getSignReturnAddressScope() == 3551 LangOptions::SignReturnAddressScopeKind::NonLeaf) 3552 GenerateArg(Args, OPT_msign_return_address_EQ, "non-leaf", SA); 3553 3554 if (Opts.getSignReturnAddressKey() == 3555 LangOptions::SignReturnAddressKeyKind::BKey) 3556 GenerateArg(Args, OPT_msign_return_address_key_EQ, "b_key", SA); 3557 3558 if (Opts.CXXABI) 3559 GenerateArg(Args, OPT_fcxx_abi_EQ, TargetCXXABI::getSpelling(*Opts.CXXABI), 3560 SA); 3561 3562 if (Opts.RelativeCXXABIVTables) 3563 GenerateArg(Args, OPT_fexperimental_relative_cxx_abi_vtables, SA); 3564 else 3565 GenerateArg(Args, OPT_fno_experimental_relative_cxx_abi_vtables, SA); 3566 3567 if (Opts.UseTargetPathSeparator) 3568 GenerateArg(Args, OPT_ffile_reproducible, SA); 3569 else 3570 GenerateArg(Args, OPT_fno_file_reproducible, SA); 3571 3572 for (const auto &MP : Opts.MacroPrefixMap) 3573 GenerateArg(Args, OPT_fmacro_prefix_map_EQ, MP.first + "=" + MP.second, SA); 3574 3575 if (!Opts.RandstructSeed.empty()) 3576 GenerateArg(Args, OPT_frandomize_layout_seed_EQ, Opts.RandstructSeed, SA); 3577} 3578 3579bool CompilerInvocation::ParseLangArgs(LangOptions &Opts, ArgList &Args, 3580 InputKind IK, const llvm::Triple &T, 3581 std::vector<std::string> &Includes, 3582 DiagnosticsEngine &Diags) { 3583 unsigned NumErrorsBefore = Diags.getNumErrors(); 3584 3585 if (IK.getFormat() == InputKind::Precompiled || 3586 IK.getLanguage() == Language::LLVM_IR) { 3587 // ObjCAAutoRefCount and Sanitize LangOpts are used to setup the 3588 // PassManager in BackendUtil.cpp. They need to be initialized no matter 3589 // what the input type is. 3590 if (Args.hasArg(OPT_fobjc_arc)) 3591 Opts.ObjCAutoRefCount = 1; 3592 // PICLevel and PIELevel are needed during code generation and this should 3593 // be set regardless of the input type. 3594 Opts.PICLevel = getLastArgIntValue(Args, OPT_pic_level, 0, Diags); 3595 Opts.PIE = Args.hasArg(OPT_pic_is_pie); 3596 parseSanitizerKinds("-fsanitize=", Args.getAllArgValues(OPT_fsanitize_EQ), 3597 Diags, Opts.Sanitize); 3598 3599 return Diags.getNumErrors() == NumErrorsBefore; 3600 } 3601 3602 // Other LangOpts are only initialized when the input is not AST or LLVM IR. 3603 // FIXME: Should we really be parsing this for an Language::Asm input? 3604 3605 // FIXME: Cleanup per-file based stuff. 3606 LangStandard::Kind LangStd = LangStandard::lang_unspecified; 3607 if (const Arg *A = Args.getLastArg(OPT_std_EQ)) { 3608 LangStd = LangStandard::getLangKind(A->getValue()); 3609 if (LangStd == LangStandard::lang_unspecified) { 3610 Diags.Report(diag::err_drv_invalid_value) 3611 << A->getAsString(Args) << A->getValue(); 3612 // Report supported standards with short description. 3613 for (unsigned KindValue = 0; 3614 KindValue != LangStandard::lang_unspecified; 3615 ++KindValue) { 3616 const LangStandard &Std = LangStandard::getLangStandardForKind( 3617 static_cast<LangStandard::Kind>(KindValue)); 3618 if (IsInputCompatibleWithStandard(IK, Std)) { 3619 auto Diag = Diags.Report(diag::note_drv_use_standard); 3620 Diag << Std.getName() << Std.getDescription(); 3621 unsigned NumAliases = 0; 3622#define LANGSTANDARD(id, name, lang, desc, features) 3623#define LANGSTANDARD_ALIAS(id, alias) \ 3624 if (KindValue == LangStandard::lang_##id) ++NumAliases; 3625#define LANGSTANDARD_ALIAS_DEPR(id, alias) 3626#include "clang/Basic/LangStandards.def" 3627 Diag << NumAliases; 3628#define LANGSTANDARD(id, name, lang, desc, features) 3629#define LANGSTANDARD_ALIAS(id, alias) \ 3630 if (KindValue == LangStandard::lang_##id) Diag << alias; 3631#define LANGSTANDARD_ALIAS_DEPR(id, alias) 3632#include "clang/Basic/LangStandards.def" 3633 } 3634 } 3635 } else { 3636 // Valid standard, check to make sure language and standard are 3637 // compatible. 3638 const LangStandard &Std = LangStandard::getLangStandardForKind(LangStd); 3639 if (!IsInputCompatibleWithStandard(IK, Std)) { 3640 Diags.Report(diag::err_drv_argument_not_allowed_with) 3641 << A->getAsString(Args) << GetInputKindName(IK); 3642 } 3643 } 3644 } 3645 3646 // -cl-std only applies for OpenCL language standards. 3647 // Override the -std option in this case. 3648 if (const Arg *A = Args.getLastArg(OPT_cl_std_EQ)) { 3649 LangStandard::Kind OpenCLLangStd 3650 = llvm::StringSwitch<LangStandard::Kind>(A->getValue()) 3651 .Cases("cl", "CL", LangStandard::lang_opencl10) 3652 .Cases("cl1.0", "CL1.0", LangStandard::lang_opencl10) 3653 .Cases("cl1.1", "CL1.1", LangStandard::lang_opencl11) 3654 .Cases("cl1.2", "CL1.2", LangStandard::lang_opencl12) 3655 .Cases("cl2.0", "CL2.0", LangStandard::lang_opencl20) 3656 .Cases("cl3.0", "CL3.0", LangStandard::lang_opencl30) 3657 .Cases("clc++", "CLC++", LangStandard::lang_openclcpp10) 3658 .Cases("clc++1.0", "CLC++1.0", LangStandard::lang_openclcpp10) 3659 .Cases("clc++2021", "CLC++2021", LangStandard::lang_openclcpp2021) 3660 .Default(LangStandard::lang_unspecified); 3661 3662 if (OpenCLLangStd == LangStandard::lang_unspecified) { 3663 Diags.Report(diag::err_drv_invalid_value) 3664 << A->getAsString(Args) << A->getValue(); 3665 } 3666 else 3667 LangStd = OpenCLLangStd; 3668 } 3669 3670 // These need to be parsed now. They are used to set OpenCL defaults. 3671 Opts.IncludeDefaultHeader = Args.hasArg(OPT_finclude_default_header); 3672 Opts.DeclareOpenCLBuiltins = Args.hasArg(OPT_fdeclare_opencl_builtins); 3673 3674 LangOptions::setLangDefaults(Opts, IK.getLanguage(), T, Includes, LangStd); 3675 3676 // The key paths of codegen options defined in Options.td start with 3677 // "LangOpts->". Let's provide the expected variable name and type. 3678 LangOptions *LangOpts = &Opts; 3679 3680#define LANG_OPTION_WITH_MARSHALLING( \ 3681 PREFIX_TYPE, NAME, ID, KIND, GROUP, ALIAS, ALIASARGS, FLAGS, PARAM, \ 3682 HELPTEXT, METAVAR, VALUES, SPELLING, SHOULD_PARSE, ALWAYS_EMIT, KEYPATH, \ 3683 DEFAULT_VALUE, IMPLIED_CHECK, IMPLIED_VALUE, NORMALIZER, DENORMALIZER, \ 3684 MERGER, EXTRACTOR, TABLE_INDEX) \ 3685 PARSE_OPTION_WITH_MARSHALLING( \ 3686 Args, Diags, ID, FLAGS, PARAM, SHOULD_PARSE, KEYPATH, DEFAULT_VALUE, \ 3687 IMPLIED_CHECK, IMPLIED_VALUE, NORMALIZER, MERGER, TABLE_INDEX) 3688#include "clang/Driver/Options.inc" 3689#undef LANG_OPTION_WITH_MARSHALLING 3690 3691 if (const Arg *A = Args.getLastArg(OPT_fcf_protection_EQ)) { 3692 StringRef Name = A->getValue(); 3693 if (Name == "full" || Name == "branch") { 3694 Opts.CFProtectionBranch = 1; 3695 } 3696 } 3697 3698 if ((Args.hasArg(OPT_fsycl_is_device) || Args.hasArg(OPT_fsycl_is_host)) && 3699 !Args.hasArg(OPT_sycl_std_EQ)) { 3700 // If the user supplied -fsycl-is-device or -fsycl-is-host, but failed to 3701 // provide -sycl-std=, we want to default it to whatever the default SYCL 3702 // version is. I could not find a way to express this with the options 3703 // tablegen because we still want this value to be SYCL_None when the user 3704 // is not in device or host mode. 3705 Opts.setSYCLVersion(LangOptions::SYCL_Default); 3706 } 3707 3708 if (Opts.ObjC) { 3709 if (Arg *arg = Args.getLastArg(OPT_fobjc_runtime_EQ)) { 3710 StringRef value = arg->getValue(); 3711 if (Opts.ObjCRuntime.tryParse(value)) 3712 Diags.Report(diag::err_drv_unknown_objc_runtime) << value; 3713 } 3714 3715 if (Args.hasArg(OPT_fobjc_gc_only)) 3716 Opts.setGC(LangOptions::GCOnly); 3717 else if (Args.hasArg(OPT_fobjc_gc)) 3718 Opts.setGC(LangOptions::HybridGC); 3719 else if (Args.hasArg(OPT_fobjc_arc)) { 3720 Opts.ObjCAutoRefCount = 1; 3721 if (!Opts.ObjCRuntime.allowsARC()) 3722 Diags.Report(diag::err_arc_unsupported_on_runtime); 3723 } 3724 3725 // ObjCWeakRuntime tracks whether the runtime supports __weak, not 3726 // whether the feature is actually enabled. This is predominantly 3727 // determined by -fobjc-runtime, but we allow it to be overridden 3728 // from the command line for testing purposes. 3729 if (Args.hasArg(OPT_fobjc_runtime_has_weak)) 3730 Opts.ObjCWeakRuntime = 1; 3731 else 3732 Opts.ObjCWeakRuntime = Opts.ObjCRuntime.allowsWeak(); 3733 3734 // ObjCWeak determines whether __weak is actually enabled. 3735 // Note that we allow -fno-objc-weak to disable this even in ARC mode. 3736 if (auto weakArg = Args.getLastArg(OPT_fobjc_weak, OPT_fno_objc_weak)) { 3737 if (!weakArg->getOption().matches(OPT_fobjc_weak)) { 3738 assert(!Opts.ObjCWeak); 3739 } else if (Opts.getGC() != LangOptions::NonGC) { 3740 Diags.Report(diag::err_objc_weak_with_gc); 3741 } else if (!Opts.ObjCWeakRuntime) { 3742 Diags.Report(diag::err_objc_weak_unsupported); 3743 } else { 3744 Opts.ObjCWeak = 1; 3745 } 3746 } else if (Opts.ObjCAutoRefCount) { 3747 Opts.ObjCWeak = Opts.ObjCWeakRuntime; 3748 } 3749 3750 if (Args.hasArg(OPT_fobjc_subscripting_legacy_runtime)) 3751 Opts.ObjCSubscriptingLegacyRuntime = 3752 (Opts.ObjCRuntime.getKind() == ObjCRuntime::FragileMacOSX); 3753 } 3754 3755 if (Arg *A = Args.getLastArg(options::OPT_fgnuc_version_EQ)) { 3756 // Check that the version has 1 to 3 components and the minor and patch 3757 // versions fit in two decimal digits. 3758 VersionTuple GNUCVer; 3759 bool Invalid = GNUCVer.tryParse(A->getValue()); 3760 unsigned Major = GNUCVer.getMajor(); 3761 unsigned Minor = GNUCVer.getMinor().value_or(0); 3762 unsigned Patch = GNUCVer.getSubminor().value_or(0); 3763 if (Invalid || GNUCVer.getBuild() || Minor >= 100 || Patch >= 100) { 3764 Diags.Report(diag::err_drv_invalid_value) 3765 << A->getAsString(Args) << A->getValue(); 3766 } 3767 Opts.GNUCVersion = Major * 100 * 100 + Minor * 100 + Patch; 3768 } 3769 3770 if (T.isOSAIX() && (Args.hasArg(OPT_mignore_xcoff_visibility))) 3771 Opts.IgnoreXCOFFVisibility = 1; 3772 3773 if (Args.hasArg(OPT_ftrapv)) { 3774 Opts.setSignedOverflowBehavior(LangOptions::SOB_Trapping); 3775 // Set the handler, if one is specified. 3776 Opts.OverflowHandler = 3777 std::string(Args.getLastArgValue(OPT_ftrapv_handler)); 3778 } 3779 else if (Args.hasArg(OPT_fwrapv)) 3780 Opts.setSignedOverflowBehavior(LangOptions::SOB_Defined); 3781 3782 Opts.MSCompatibilityVersion = 0; 3783 if (const Arg *A = Args.getLastArg(OPT_fms_compatibility_version)) { 3784 VersionTuple VT; 3785 if (VT.tryParse(A->getValue())) 3786 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) 3787 << A->getValue(); 3788 Opts.MSCompatibilityVersion = VT.getMajor() * 10000000 + 3789 VT.getMinor().value_or(0) * 100000 + 3790 VT.getSubminor().value_or(0); 3791 } 3792 3793 // Mimicking gcc's behavior, trigraphs are only enabled if -trigraphs 3794 // is specified, or -std is set to a conforming mode. 3795 // Trigraphs are disabled by default in c++1z onwards. 3796 // For z/OS, trigraphs are enabled by default (without regard to the above). 3797 Opts.Trigraphs = 3798 (!Opts.GNUMode && !Opts.MSVCCompat && !Opts.CPlusPlus17) || T.isOSzOS(); 3799 Opts.Trigraphs = 3800 Args.hasFlag(OPT_ftrigraphs, OPT_fno_trigraphs, Opts.Trigraphs); 3801 3802 Opts.Blocks = Args.hasArg(OPT_fblocks) || (Opts.OpenCL 3803 && Opts.OpenCLVersion == 200); 3804 3805 Opts.ConvergentFunctions = Opts.OpenCL || (Opts.CUDA && Opts.CUDAIsDevice) || 3806 Opts.SYCLIsDevice || 3807 Args.hasArg(OPT_fconvergent_functions); 3808 3809 Opts.NoBuiltin = Args.hasArg(OPT_fno_builtin) || Opts.Freestanding; 3810 if (!Opts.NoBuiltin) 3811 getAllNoBuiltinFuncValues(Args, Opts.NoBuiltinFuncs); 3812 if (Arg *A = Args.getLastArg(options::OPT_LongDouble_Group)) { 3813 if (A->getOption().matches(options::OPT_mlong_double_64)) 3814 Opts.LongDoubleSize = 64; 3815 else if (A->getOption().matches(options::OPT_mlong_double_80)) 3816 Opts.LongDoubleSize = 80; 3817 else if (A->getOption().matches(options::OPT_mlong_double_128)) 3818 Opts.LongDoubleSize = 128; 3819 else 3820 Opts.LongDoubleSize = 0; 3821 } 3822 if (Opts.FastRelaxedMath || Opts.CLUnsafeMath) 3823 Opts.setDefaultFPContractMode(LangOptions::FPM_Fast); 3824 3825 llvm::sort(Opts.ModuleFeatures); 3826 3827 // -mrtd option 3828 if (Arg *A = Args.getLastArg(OPT_mrtd)) { 3829 if (Opts.getDefaultCallingConv() != LangOptions::DCC_None) 3830 Diags.Report(diag::err_drv_argument_not_allowed_with) 3831 << A->getSpelling() << "-fdefault-calling-conv"; 3832 else { 3833 if (T.getArch() != llvm::Triple::x86) 3834 Diags.Report(diag::err_drv_argument_not_allowed_with) 3835 << A->getSpelling() << T.getTriple(); 3836 else 3837 Opts.setDefaultCallingConv(LangOptions::DCC_StdCall); 3838 } 3839 } 3840 3841 // Check if -fopenmp is specified and set default version to 5.0. 3842 Opts.OpenMP = Args.hasArg(OPT_fopenmp) ? 50 : 0; 3843 // Check if -fopenmp-simd is specified. 3844 bool IsSimdSpecified = 3845 Args.hasFlag(options::OPT_fopenmp_simd, options::OPT_fno_openmp_simd, 3846 /*Default=*/false); 3847 Opts.OpenMPSimd = !Opts.OpenMP && IsSimdSpecified; 3848 Opts.OpenMPUseTLS = 3849 Opts.OpenMP && !Args.hasArg(options::OPT_fnoopenmp_use_tls); 3850 Opts.OpenMPIsDevice = 3851 Opts.OpenMP && Args.hasArg(options::OPT_fopenmp_is_device); 3852 Opts.OpenMPIRBuilder = 3853 Opts.OpenMP && Args.hasArg(options::OPT_fopenmp_enable_irbuilder); 3854 bool IsTargetSpecified = 3855 Opts.OpenMPIsDevice || Args.hasArg(options::OPT_fopenmp_targets_EQ); 3856 3857 Opts.ConvergentFunctions = Opts.ConvergentFunctions || Opts.OpenMPIsDevice; 3858 3859 if (Opts.OpenMP || Opts.OpenMPSimd) { 3860 if (int Version = getLastArgIntValue( 3861 Args, OPT_fopenmp_version_EQ, 3862 (IsSimdSpecified || IsTargetSpecified) ? 50 : Opts.OpenMP, Diags)) 3863 Opts.OpenMP = Version; 3864 // Provide diagnostic when a given target is not expected to be an OpenMP 3865 // device or host. 3866 if (!Opts.OpenMPIsDevice) { 3867 switch (T.getArch()) { 3868 default: 3869 break; 3870 // Add unsupported host targets here: 3871 case llvm::Triple::nvptx: 3872 case llvm::Triple::nvptx64: 3873 Diags.Report(diag::err_drv_omp_host_target_not_supported) << T.str(); 3874 break; 3875 } 3876 } 3877 } 3878 3879 // Set the flag to prevent the implementation from emitting device exception 3880 // handling code for those requiring so. 3881 if ((Opts.OpenMPIsDevice && (T.isNVPTX() || T.isAMDGCN())) || 3882 Opts.OpenCLCPlusPlus) { 3883 3884 Opts.Exceptions = 0; 3885 Opts.CXXExceptions = 0; 3886 } 3887 if (Opts.OpenMPIsDevice && T.isNVPTX()) { 3888 Opts.OpenMPCUDANumSMs = 3889 getLastArgIntValue(Args, options::OPT_fopenmp_cuda_number_of_sm_EQ, 3890 Opts.OpenMPCUDANumSMs, Diags); 3891 Opts.OpenMPCUDABlocksPerSM = 3892 getLastArgIntValue(Args, options::OPT_fopenmp_cuda_blocks_per_sm_EQ, 3893 Opts.OpenMPCUDABlocksPerSM, Diags); 3894 Opts.OpenMPCUDAReductionBufNum = getLastArgIntValue( 3895 Args, options::OPT_fopenmp_cuda_teams_reduction_recs_num_EQ, 3896 Opts.OpenMPCUDAReductionBufNum, Diags); 3897 } 3898 3899 // Set the value of the debugging flag used in the new offloading device RTL. 3900 // Set either by a specific value or to a default if not specified. 3901 if (Opts.OpenMPIsDevice && (Args.hasArg(OPT_fopenmp_target_debug) || 3902 Args.hasArg(OPT_fopenmp_target_debug_EQ))) { 3903 Opts.OpenMPTargetDebug = getLastArgIntValue( 3904 Args, OPT_fopenmp_target_debug_EQ, Opts.OpenMPTargetDebug, Diags); 3905 if (!Opts.OpenMPTargetDebug && Args.hasArg(OPT_fopenmp_target_debug)) 3906 Opts.OpenMPTargetDebug = 1; 3907 } 3908 3909 if (Opts.OpenMPIsDevice) { 3910 if (Args.hasArg(OPT_fopenmp_assume_teams_oversubscription)) 3911 Opts.OpenMPTeamSubscription = true; 3912 if (Args.hasArg(OPT_fopenmp_assume_threads_oversubscription)) 3913 Opts.OpenMPThreadSubscription = true; 3914 } 3915 3916 // Get the OpenMP target triples if any. 3917 if (Arg *A = Args.getLastArg(options::OPT_fopenmp_targets_EQ)) { 3918 enum ArchPtrSize { Arch16Bit, Arch32Bit, Arch64Bit }; 3919 auto getArchPtrSize = [](const llvm::Triple &T) { 3920 if (T.isArch16Bit()) 3921 return Arch16Bit; 3922 if (T.isArch32Bit()) 3923 return Arch32Bit; 3924 assert(T.isArch64Bit() && "Expected 64-bit architecture"); 3925 return Arch64Bit; 3926 }; 3927 3928 for (unsigned i = 0; i < A->getNumValues(); ++i) { 3929 llvm::Triple TT(A->getValue(i)); 3930 3931 if (TT.getArch() == llvm::Triple::UnknownArch || 3932 !(TT.getArch() == llvm::Triple::aarch64 || TT.isPPC() || 3933 TT.getArch() == llvm::Triple::nvptx || 3934 TT.getArch() == llvm::Triple::nvptx64 || 3935 TT.getArch() == llvm::Triple::amdgcn || 3936 TT.getArch() == llvm::Triple::x86 || 3937 TT.getArch() == llvm::Triple::x86_64)) 3938 Diags.Report(diag::err_drv_invalid_omp_target) << A->getValue(i); 3939 else if (getArchPtrSize(T) != getArchPtrSize(TT)) 3940 Diags.Report(diag::err_drv_incompatible_omp_arch) 3941 << A->getValue(i) << T.str(); 3942 else 3943 Opts.OMPTargetTriples.push_back(TT); 3944 } 3945 } 3946 3947 // Get OpenMP host file path if any and report if a non existent file is 3948 // found 3949 if (Arg *A = Args.getLastArg(options::OPT_fopenmp_host_ir_file_path)) { 3950 Opts.OMPHostIRFile = A->getValue(); 3951 if (!llvm::sys::fs::exists(Opts.OMPHostIRFile)) 3952 Diags.Report(diag::err_drv_omp_host_ir_file_not_found) 3953 << Opts.OMPHostIRFile; 3954 } 3955 3956 // Set CUDA mode for OpenMP target NVPTX/AMDGCN if specified in options 3957 Opts.OpenMPCUDAMode = Opts.OpenMPIsDevice && (T.isNVPTX() || T.isAMDGCN()) && 3958 Args.hasArg(options::OPT_fopenmp_cuda_mode); 3959 3960 // FIXME: Eliminate this dependency. 3961 unsigned Opt = getOptimizationLevel(Args, IK, Diags), 3962 OptSize = getOptimizationLevelSize(Args); 3963 Opts.Optimize = Opt != 0; 3964 Opts.OptimizeSize = OptSize != 0; 3965 3966 // This is the __NO_INLINE__ define, which just depends on things like the 3967 // optimization level and -fno-inline, not actually whether the backend has 3968 // inlining enabled. 3969 Opts.NoInlineDefine = !Opts.Optimize; 3970 if (Arg *InlineArg = Args.getLastArg( 3971 options::OPT_finline_functions, options::OPT_finline_hint_functions, 3972 options::OPT_fno_inline_functions, options::OPT_fno_inline)) 3973 if (InlineArg->getOption().matches(options::OPT_fno_inline)) 3974 Opts.NoInlineDefine = true; 3975 3976 if (Arg *A = Args.getLastArg(OPT_ffp_contract)) { 3977 StringRef Val = A->getValue(); 3978 if (Val == "fast") 3979 Opts.setDefaultFPContractMode(LangOptions::FPM_Fast); 3980 else if (Val == "on") 3981 Opts.setDefaultFPContractMode(LangOptions::FPM_On); 3982 else if (Val == "off") 3983 Opts.setDefaultFPContractMode(LangOptions::FPM_Off); 3984 else if (Val == "fast-honor-pragmas") 3985 Opts.setDefaultFPContractMode(LangOptions::FPM_FastHonorPragmas); 3986 else 3987 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Val; 3988 } 3989 3990 // Parse -fsanitize= arguments. 3991 parseSanitizerKinds("-fsanitize=", Args.getAllArgValues(OPT_fsanitize_EQ), 3992 Diags, Opts.Sanitize); 3993 Opts.NoSanitizeFiles = Args.getAllArgValues(OPT_fsanitize_ignorelist_EQ); 3994 std::vector<std::string> systemIgnorelists = 3995 Args.getAllArgValues(OPT_fsanitize_system_ignorelist_EQ); 3996 Opts.NoSanitizeFiles.insert(Opts.NoSanitizeFiles.end(), 3997 systemIgnorelists.begin(), 3998 systemIgnorelists.end()); 3999 4000 if (Arg *A = Args.getLastArg(OPT_fclang_abi_compat_EQ)) { 4001 Opts.setClangABICompat(LangOptions::ClangABI::Latest); 4002 4003 StringRef Ver = A->getValue(); 4004 std::pair<StringRef, StringRef> VerParts = Ver.split('.'); 4005 unsigned Major, Minor = 0; 4006 4007 // Check the version number is valid: either 3.x (0 <= x <= 9) or 4008 // y or y.0 (4 <= y <= current version). 4009 if (!VerParts.first.startswith("0") && 4010 !VerParts.first.getAsInteger(10, Major) && 4011 3 <= Major && Major <= CLANG_VERSION_MAJOR && 4012 (Major == 3 ? VerParts.second.size() == 1 && 4013 !VerParts.second.getAsInteger(10, Minor) 4014 : VerParts.first.size() == Ver.size() || 4015 VerParts.second == "0")) { 4016 // Got a valid version number. 4017 if (Major == 3 && Minor <= 8) 4018 Opts.setClangABICompat(LangOptions::ClangABI::Ver3_8); 4019 else if (Major <= 4) 4020 Opts.setClangABICompat(LangOptions::ClangABI::Ver4); 4021 else if (Major <= 6) 4022 Opts.setClangABICompat(LangOptions::ClangABI::Ver6); 4023 else if (Major <= 7) 4024 Opts.setClangABICompat(LangOptions::ClangABI::Ver7); 4025 else if (Major <= 9) 4026 Opts.setClangABICompat(LangOptions::ClangABI::Ver9); 4027 else if (Major <= 11) 4028 Opts.setClangABICompat(LangOptions::ClangABI::Ver11); 4029 else if (Major <= 12) 4030 Opts.setClangABICompat(LangOptions::ClangABI::Ver12); 4031 else if (Major <= 14) 4032 Opts.setClangABICompat(LangOptions::ClangABI::Ver14); 4033 else if (Major <= 15) 4034 Opts.setClangABICompat(LangOptions::ClangABI::Ver15); 4035 } else if (Ver != "latest") { 4036 Diags.Report(diag::err_drv_invalid_value) 4037 << A->getAsString(Args) << A->getValue(); 4038 } 4039 } 4040 4041 if (Arg *A = Args.getLastArg(OPT_msign_return_address_EQ)) { 4042 StringRef SignScope = A->getValue(); 4043 4044 if (SignScope.equals_insensitive("none")) 4045 Opts.setSignReturnAddressScope( 4046 LangOptions::SignReturnAddressScopeKind::None); 4047 else if (SignScope.equals_insensitive("all")) 4048 Opts.setSignReturnAddressScope( 4049 LangOptions::SignReturnAddressScopeKind::All); 4050 else if (SignScope.equals_insensitive("non-leaf")) 4051 Opts.setSignReturnAddressScope( 4052 LangOptions::SignReturnAddressScopeKind::NonLeaf); 4053 else 4054 Diags.Report(diag::err_drv_invalid_value) 4055 << A->getAsString(Args) << SignScope; 4056 4057 if (Arg *A = Args.getLastArg(OPT_msign_return_address_key_EQ)) { 4058 StringRef SignKey = A->getValue(); 4059 if (!SignScope.empty() && !SignKey.empty()) { 4060 if (SignKey.equals_insensitive("a_key")) 4061 Opts.setSignReturnAddressKey( 4062 LangOptions::SignReturnAddressKeyKind::AKey); 4063 else if (SignKey.equals_insensitive("b_key")) 4064 Opts.setSignReturnAddressKey( 4065 LangOptions::SignReturnAddressKeyKind::BKey); 4066 else 4067 Diags.Report(diag::err_drv_invalid_value) 4068 << A->getAsString(Args) << SignKey; 4069 } 4070 } 4071 } 4072 4073 // The value can be empty, which indicates the system default should be used. 4074 StringRef CXXABI = Args.getLastArgValue(OPT_fcxx_abi_EQ); 4075 if (!CXXABI.empty()) { 4076 if (!TargetCXXABI::isABI(CXXABI)) { 4077 Diags.Report(diag::err_invalid_cxx_abi) << CXXABI; 4078 } else { 4079 auto Kind = TargetCXXABI::getKind(CXXABI); 4080 if (!TargetCXXABI::isSupportedCXXABI(T, Kind)) 4081 Diags.Report(diag::err_unsupported_cxx_abi) << CXXABI << T.str(); 4082 else 4083 Opts.CXXABI = Kind; 4084 } 4085 } 4086 4087 Opts.RelativeCXXABIVTables = 4088 Args.hasFlag(options::OPT_fexperimental_relative_cxx_abi_vtables, 4089 options::OPT_fno_experimental_relative_cxx_abi_vtables, 4090 TargetCXXABI::usesRelativeVTables(T)); 4091 4092 for (const auto &A : Args.getAllArgValues(OPT_fmacro_prefix_map_EQ)) { 4093 auto Split = StringRef(A).split('='); 4094 Opts.MacroPrefixMap.insert( 4095 {std::string(Split.first), std::string(Split.second)}); 4096 } 4097 4098 Opts.UseTargetPathSeparator = 4099 !Args.getLastArg(OPT_fno_file_reproducible) && 4100 (Args.getLastArg(OPT_ffile_compilation_dir_EQ) || 4101 Args.getLastArg(OPT_fmacro_prefix_map_EQ) || 4102 Args.getLastArg(OPT_ffile_reproducible)); 4103 4104 // Error if -mvscale-min is unbounded. 4105 if (Arg *A = Args.getLastArg(options::OPT_mvscale_min_EQ)) { 4106 unsigned VScaleMin; 4107 if (StringRef(A->getValue()).getAsInteger(10, VScaleMin) || VScaleMin == 0) 4108 Diags.Report(diag::err_cc1_unbounded_vscale_min); 4109 } 4110 4111 if (const Arg *A = Args.getLastArg(OPT_frandomize_layout_seed_file_EQ)) { 4112 std::ifstream SeedFile(A->getValue(0)); 4113 4114 if (!SeedFile.is_open()) 4115 Diags.Report(diag::err_drv_cannot_open_randomize_layout_seed_file) 4116 << A->getValue(0); 4117 4118 std::getline(SeedFile, Opts.RandstructSeed); 4119 } 4120 4121 if (const Arg *A = Args.getLastArg(OPT_frandomize_layout_seed_EQ)) 4122 Opts.RandstructSeed = A->getValue(0); 4123 4124 // Validate options for HLSL 4125 if (Opts.HLSL) { 4126 bool SupportedTarget = T.getArch() == llvm::Triple::dxil && 4127 T.getOS() == llvm::Triple::ShaderModel; 4128 if (!SupportedTarget) 4129 Diags.Report(diag::err_drv_hlsl_unsupported_target) << T.str(); 4130 } 4131 4132 return Diags.getNumErrors() == NumErrorsBefore; 4133} 4134 4135static bool isStrictlyPreprocessorAction(frontend::ActionKind Action) { 4136 switch (Action) { 4137 case frontend::ASTDeclList: 4138 case frontend::ASTDump: 4139 case frontend::ASTPrint: 4140 case frontend::ASTView: 4141 case frontend::EmitAssembly: 4142 case frontend::EmitBC: 4143 case frontend::EmitHTML: 4144 case frontend::EmitLLVM: 4145 case frontend::EmitLLVMOnly: 4146 case frontend::EmitCodeGenOnly: 4147 case frontend::EmitObj: 4148 case frontend::ExtractAPI: 4149 case frontend::FixIt: 4150 case frontend::GenerateModule: 4151 case frontend::GenerateModuleInterface: 4152 case frontend::GenerateHeaderUnit: 4153 case frontend::GeneratePCH: 4154 case frontend::GenerateInterfaceStubs: 4155 case frontend::ParseSyntaxOnly: 4156 case frontend::ModuleFileInfo: 4157 case frontend::VerifyPCH: 4158 case frontend::PluginAction: 4159 case frontend::RewriteObjC: 4160 case frontend::RewriteTest: 4161 case frontend::RunAnalysis: 4162 case frontend::TemplightDump: 4163 case frontend::MigrateSource: 4164 return false; 4165 4166 case frontend::DumpCompilerOptions: 4167 case frontend::DumpRawTokens: 4168 case frontend::DumpTokens: 4169 case frontend::InitOnly: 4170 case frontend::PrintPreamble: 4171 case frontend::PrintPreprocessedInput: 4172 case frontend::RewriteMacros: 4173 case frontend::RunPreprocessorOnly: 4174 case frontend::PrintDependencyDirectivesSourceMinimizerOutput: 4175 return true; 4176 } 4177 llvm_unreachable("invalid frontend action"); 4178} 4179 4180static void GeneratePreprocessorArgs(PreprocessorOptions &Opts, 4181 SmallVectorImpl<const char *> &Args, 4182 CompilerInvocation::StringAllocator SA, 4183 const LangOptions &LangOpts, 4184 const FrontendOptions &FrontendOpts, 4185 const CodeGenOptions &CodeGenOpts) { 4186 PreprocessorOptions *PreprocessorOpts = &Opts; 4187 4188#define PREPROCESSOR_OPTION_WITH_MARSHALLING( \ 4189 PREFIX_TYPE, NAME, ID, KIND, GROUP, ALIAS, ALIASARGS, FLAGS, PARAM, \ 4190 HELPTEXT, METAVAR, VALUES, SPELLING, SHOULD_PARSE, ALWAYS_EMIT, KEYPATH, \ 4191 DEFAULT_VALUE, IMPLIED_CHECK, IMPLIED_VALUE, NORMALIZER, DENORMALIZER, \ 4192 MERGER, EXTRACTOR, TABLE_INDEX) \ 4193 GENERATE_OPTION_WITH_MARSHALLING( \ 4194 Args, SA, KIND, FLAGS, SPELLING, ALWAYS_EMIT, KEYPATH, DEFAULT_VALUE, \ 4195 IMPLIED_CHECK, IMPLIED_VALUE, DENORMALIZER, EXTRACTOR, TABLE_INDEX) 4196#include "clang/Driver/Options.inc" 4197#undef PREPROCESSOR_OPTION_WITH_MARSHALLING 4198 4199 if (Opts.PCHWithHdrStop && !Opts.PCHWithHdrStopCreate) 4200 GenerateArg(Args, OPT_pch_through_hdrstop_use, SA); 4201 4202 for (const auto &D : Opts.DeserializedPCHDeclsToErrorOn) 4203 GenerateArg(Args, OPT_error_on_deserialized_pch_decl, D, SA); 4204 4205 if (Opts.PrecompiledPreambleBytes != std::make_pair(0u, false)) 4206 GenerateArg(Args, OPT_preamble_bytes_EQ, 4207 Twine(Opts.PrecompiledPreambleBytes.first) + "," + 4208 (Opts.PrecompiledPreambleBytes.second ? "1" : "0"), 4209 SA); 4210 4211 for (const auto &M : Opts.Macros) { 4212 // Don't generate __CET__ macro definitions. They are implied by the 4213 // -fcf-protection option that is generated elsewhere. 4214 if (M.first == "__CET__=1" && !M.second && 4215 !CodeGenOpts.CFProtectionReturn && CodeGenOpts.CFProtectionBranch) 4216 continue; 4217 if (M.first == "__CET__=2" && !M.second && CodeGenOpts.CFProtectionReturn && 4218 !CodeGenOpts.CFProtectionBranch) 4219 continue; 4220 if (M.first == "__CET__=3" && !M.second && CodeGenOpts.CFProtectionReturn && 4221 CodeGenOpts.CFProtectionBranch) 4222 continue; 4223 4224 GenerateArg(Args, M.second ? OPT_U : OPT_D, M.first, SA); 4225 } 4226 4227 for (const auto &I : Opts.Includes) { 4228 // Don't generate OpenCL includes. They are implied by other flags that are 4229 // generated elsewhere. 4230 if (LangOpts.OpenCL && LangOpts.IncludeDefaultHeader && 4231 ((LangOpts.DeclareOpenCLBuiltins && I == "opencl-c-base.h") || 4232 I == "opencl-c.h")) 4233 continue; 4234 // Don't generate HLSL includes. They are implied by other flags that are 4235 // generated elsewhere. 4236 if (LangOpts.HLSL && I == "hlsl.h") 4237 continue; 4238 4239 GenerateArg(Args, OPT_include, I, SA); 4240 } 4241 4242 for (const auto &CI : Opts.ChainedIncludes) 4243 GenerateArg(Args, OPT_chain_include, CI, SA); 4244 4245 for (const auto &RF : Opts.RemappedFiles) 4246 GenerateArg(Args, OPT_remap_file, RF.first + ";" + RF.second, SA); 4247 4248 if (Opts.SourceDateEpoch) 4249 GenerateArg(Args, OPT_source_date_epoch, Twine(*Opts.SourceDateEpoch), SA); 4250 4251 // Don't handle LexEditorPlaceholders. It is implied by the action that is 4252 // generated elsewhere. 4253} 4254 4255static bool ParsePreprocessorArgs(PreprocessorOptions &Opts, ArgList &Args, 4256 DiagnosticsEngine &Diags, 4257 frontend::ActionKind Action, 4258 const FrontendOptions &FrontendOpts) { 4259 unsigned NumErrorsBefore = Diags.getNumErrors(); 4260 4261 PreprocessorOptions *PreprocessorOpts = &Opts; 4262 4263#define PREPROCESSOR_OPTION_WITH_MARSHALLING( \ 4264 PREFIX_TYPE, NAME, ID, KIND, GROUP, ALIAS, ALIASARGS, FLAGS, PARAM, \ 4265 HELPTEXT, METAVAR, VALUES, SPELLING, SHOULD_PARSE, ALWAYS_EMIT, KEYPATH, \ 4266 DEFAULT_VALUE, IMPLIED_CHECK, IMPLIED_VALUE, NORMALIZER, DENORMALIZER, \ 4267 MERGER, EXTRACTOR, TABLE_INDEX) \ 4268 PARSE_OPTION_WITH_MARSHALLING( \ 4269 Args, Diags, ID, FLAGS, PARAM, SHOULD_PARSE, KEYPATH, DEFAULT_VALUE, \ 4270 IMPLIED_CHECK, IMPLIED_VALUE, NORMALIZER, MERGER, TABLE_INDEX) 4271#include "clang/Driver/Options.inc" 4272#undef PREPROCESSOR_OPTION_WITH_MARSHALLING 4273 4274 Opts.PCHWithHdrStop = Args.hasArg(OPT_pch_through_hdrstop_create) || 4275 Args.hasArg(OPT_pch_through_hdrstop_use); 4276 4277 for (const auto *A : Args.filtered(OPT_error_on_deserialized_pch_decl)) 4278 Opts.DeserializedPCHDeclsToErrorOn.insert(A->getValue()); 4279 4280 if (const Arg *A = Args.getLastArg(OPT_preamble_bytes_EQ)) { 4281 StringRef Value(A->getValue()); 4282 size_t Comma = Value.find(','); 4283 unsigned Bytes = 0; 4284 unsigned EndOfLine = 0; 4285 4286 if (Comma == StringRef::npos || 4287 Value.substr(0, Comma).getAsInteger(10, Bytes) || 4288 Value.substr(Comma + 1).getAsInteger(10, EndOfLine)) 4289 Diags.Report(diag::err_drv_preamble_format); 4290 else { 4291 Opts.PrecompiledPreambleBytes.first = Bytes; 4292 Opts.PrecompiledPreambleBytes.second = (EndOfLine != 0); 4293 } 4294 } 4295 4296 // Add the __CET__ macro if a CFProtection option is set. 4297 if (const Arg *A = Args.getLastArg(OPT_fcf_protection_EQ)) { 4298 StringRef Name = A->getValue(); 4299 if (Name == "branch") 4300 Opts.addMacroDef("__CET__=1"); 4301 else if (Name == "return") 4302 Opts.addMacroDef("__CET__=2"); 4303 else if (Name == "full") 4304 Opts.addMacroDef("__CET__=3"); 4305 } 4306 4307 // Add macros from the command line. 4308 for (const auto *A : Args.filtered(OPT_D, OPT_U)) { 4309 if (A->getOption().matches(OPT_D)) 4310 Opts.addMacroDef(A->getValue()); 4311 else 4312 Opts.addMacroUndef(A->getValue()); 4313 } 4314 4315 // Add the ordered list of -includes. 4316 for (const auto *A : Args.filtered(OPT_include)) 4317 Opts.Includes.emplace_back(A->getValue()); 4318 4319 for (const auto *A : Args.filtered(OPT_chain_include)) 4320 Opts.ChainedIncludes.emplace_back(A->getValue()); 4321 4322 for (const auto *A : Args.filtered(OPT_remap_file)) { 4323 std::pair<StringRef, StringRef> Split = StringRef(A->getValue()).split(';'); 4324 4325 if (Split.second.empty()) { 4326 Diags.Report(diag::err_drv_invalid_remap_file) << A->getAsString(Args); 4327 continue; 4328 } 4329 4330 Opts.addRemappedFile(Split.first, Split.second); 4331 } 4332 4333 if (const Arg *A = Args.getLastArg(OPT_source_date_epoch)) { 4334 StringRef Epoch = A->getValue(); 4335 // SOURCE_DATE_EPOCH, if specified, must be a non-negative decimal integer. 4336 // On time64 systems, pick 253402300799 (the UNIX timestamp of 4337 // 9999-12-31T23:59:59Z) as the upper bound. 4338 const uint64_t MaxTimestamp = 4339 std::min<uint64_t>(std::numeric_limits<time_t>::max(), 253402300799); 4340 uint64_t V; 4341 if (Epoch.getAsInteger(10, V) || V > MaxTimestamp) { 4342 Diags.Report(diag::err_fe_invalid_source_date_epoch) 4343 << Epoch << MaxTimestamp; 4344 } else { 4345 Opts.SourceDateEpoch = V; 4346 } 4347 } 4348 4349 // Always avoid lexing editor placeholders when we're just running the 4350 // preprocessor as we never want to emit the 4351 // "editor placeholder in source file" error in PP only mode. 4352 if (isStrictlyPreprocessorAction(Action)) 4353 Opts.LexEditorPlaceholders = false; 4354 4355 return Diags.getNumErrors() == NumErrorsBefore; 4356} 4357 4358static void GeneratePreprocessorOutputArgs( 4359 const PreprocessorOutputOptions &Opts, SmallVectorImpl<const char *> &Args, 4360 CompilerInvocation::StringAllocator SA, frontend::ActionKind Action) { 4361 const PreprocessorOutputOptions &PreprocessorOutputOpts = Opts; 4362 4363#define PREPROCESSOR_OUTPUT_OPTION_WITH_MARSHALLING( \ 4364 PREFIX_TYPE, NAME, ID, KIND, GROUP, ALIAS, ALIASARGS, FLAGS, PARAM, \ 4365 HELPTEXT, METAVAR, VALUES, SPELLING, SHOULD_PARSE, ALWAYS_EMIT, KEYPATH, \ 4366 DEFAULT_VALUE, IMPLIED_CHECK, IMPLIED_VALUE, NORMALIZER, DENORMALIZER, \ 4367 MERGER, EXTRACTOR, TABLE_INDEX) \ 4368 GENERATE_OPTION_WITH_MARSHALLING( \ 4369 Args, SA, KIND, FLAGS, SPELLING, ALWAYS_EMIT, KEYPATH, DEFAULT_VALUE, \ 4370 IMPLIED_CHECK, IMPLIED_VALUE, DENORMALIZER, EXTRACTOR, TABLE_INDEX) 4371#include "clang/Driver/Options.inc" 4372#undef PREPROCESSOR_OUTPUT_OPTION_WITH_MARSHALLING 4373 4374 bool Generate_dM = isStrictlyPreprocessorAction(Action) && !Opts.ShowCPP; 4375 if (Generate_dM) 4376 GenerateArg(Args, OPT_dM, SA); 4377 if (!Generate_dM && Opts.ShowMacros) 4378 GenerateArg(Args, OPT_dD, SA); 4379 if (Opts.DirectivesOnly) 4380 GenerateArg(Args, OPT_fdirectives_only, SA); 4381} 4382 4383static bool ParsePreprocessorOutputArgs(PreprocessorOutputOptions &Opts, 4384 ArgList &Args, DiagnosticsEngine &Diags, 4385 frontend::ActionKind Action) { 4386 unsigned NumErrorsBefore = Diags.getNumErrors(); 4387 4388 PreprocessorOutputOptions &PreprocessorOutputOpts = Opts; 4389 4390#define PREPROCESSOR_OUTPUT_OPTION_WITH_MARSHALLING( \ 4391 PREFIX_TYPE, NAME, ID, KIND, GROUP, ALIAS, ALIASARGS, FLAGS, PARAM, \ 4392 HELPTEXT, METAVAR, VALUES, SPELLING, SHOULD_PARSE, ALWAYS_EMIT, KEYPATH, \ 4393 DEFAULT_VALUE, IMPLIED_CHECK, IMPLIED_VALUE, NORMALIZER, DENORMALIZER, \ 4394 MERGER, EXTRACTOR, TABLE_INDEX) \ 4395 PARSE_OPTION_WITH_MARSHALLING( \ 4396 Args, Diags, ID, FLAGS, PARAM, SHOULD_PARSE, KEYPATH, DEFAULT_VALUE, \ 4397 IMPLIED_CHECK, IMPLIED_VALUE, NORMALIZER, MERGER, TABLE_INDEX) 4398#include "clang/Driver/Options.inc" 4399#undef PREPROCESSOR_OUTPUT_OPTION_WITH_MARSHALLING 4400 4401 Opts.ShowCPP = isStrictlyPreprocessorAction(Action) && !Args.hasArg(OPT_dM); 4402 Opts.ShowMacros = Args.hasArg(OPT_dM) || Args.hasArg(OPT_dD); 4403 Opts.DirectivesOnly = Args.hasArg(OPT_fdirectives_only); 4404 4405 return Diags.getNumErrors() == NumErrorsBefore; 4406} 4407 4408static void GenerateTargetArgs(const TargetOptions &Opts, 4409 SmallVectorImpl<const char *> &Args, 4410 CompilerInvocation::StringAllocator SA) { 4411 const TargetOptions *TargetOpts = &Opts; 4412#define TARGET_OPTION_WITH_MARSHALLING( \ 4413 PREFIX_TYPE, NAME, ID, KIND, GROUP, ALIAS, ALIASARGS, FLAGS, PARAM, \ 4414 HELPTEXT, METAVAR, VALUES, SPELLING, SHOULD_PARSE, ALWAYS_EMIT, KEYPATH, \ 4415 DEFAULT_VALUE, IMPLIED_CHECK, IMPLIED_VALUE, NORMALIZER, DENORMALIZER, \ 4416 MERGER, EXTRACTOR, TABLE_INDEX) \ 4417 GENERATE_OPTION_WITH_MARSHALLING( \ 4418 Args, SA, KIND, FLAGS, SPELLING, ALWAYS_EMIT, KEYPATH, DEFAULT_VALUE, \ 4419 IMPLIED_CHECK, IMPLIED_VALUE, DENORMALIZER, EXTRACTOR, TABLE_INDEX) 4420#include "clang/Driver/Options.inc" 4421#undef TARGET_OPTION_WITH_MARSHALLING 4422 4423 if (!Opts.SDKVersion.empty()) 4424 GenerateArg(Args, OPT_target_sdk_version_EQ, Opts.SDKVersion.getAsString(), 4425 SA); 4426 if (!Opts.DarwinTargetVariantSDKVersion.empty()) 4427 GenerateArg(Args, OPT_darwin_target_variant_sdk_version_EQ, 4428 Opts.DarwinTargetVariantSDKVersion.getAsString(), SA); 4429} 4430 4431static bool ParseTargetArgs(TargetOptions &Opts, ArgList &Args, 4432 DiagnosticsEngine &Diags) { 4433 unsigned NumErrorsBefore = Diags.getNumErrors(); 4434 4435 TargetOptions *TargetOpts = &Opts; 4436 4437#define TARGET_OPTION_WITH_MARSHALLING( \ 4438 PREFIX_TYPE, NAME, ID, KIND, GROUP, ALIAS, ALIASARGS, FLAGS, PARAM, \ 4439 HELPTEXT, METAVAR, VALUES, SPELLING, SHOULD_PARSE, ALWAYS_EMIT, KEYPATH, \ 4440 DEFAULT_VALUE, IMPLIED_CHECK, IMPLIED_VALUE, NORMALIZER, DENORMALIZER, \ 4441 MERGER, EXTRACTOR, TABLE_INDEX) \ 4442 PARSE_OPTION_WITH_MARSHALLING( \ 4443 Args, Diags, ID, FLAGS, PARAM, SHOULD_PARSE, KEYPATH, DEFAULT_VALUE, \ 4444 IMPLIED_CHECK, IMPLIED_VALUE, NORMALIZER, MERGER, TABLE_INDEX) 4445#include "clang/Driver/Options.inc" 4446#undef TARGET_OPTION_WITH_MARSHALLING 4447 4448 if (Arg *A = Args.getLastArg(options::OPT_target_sdk_version_EQ)) { 4449 llvm::VersionTuple Version; 4450 if (Version.tryParse(A->getValue())) 4451 Diags.Report(diag::err_drv_invalid_value) 4452 << A->getAsString(Args) << A->getValue(); 4453 else 4454 Opts.SDKVersion = Version; 4455 } 4456 if (Arg *A = 4457 Args.getLastArg(options::OPT_darwin_target_variant_sdk_version_EQ)) { 4458 llvm::VersionTuple Version; 4459 if (Version.tryParse(A->getValue())) 4460 Diags.Report(diag::err_drv_invalid_value) 4461 << A->getAsString(Args) << A->getValue(); 4462 else 4463 Opts.DarwinTargetVariantSDKVersion = Version; 4464 } 4465 4466 return Diags.getNumErrors() == NumErrorsBefore; 4467} 4468 4469bool CompilerInvocation::CreateFromArgsImpl( 4470 CompilerInvocation &Res, ArrayRef<const char *> CommandLineArgs, 4471 DiagnosticsEngine &Diags, const char *Argv0) { 4472 unsigned NumErrorsBefore = Diags.getNumErrors(); 4473 4474 // Parse the arguments. 4475 const OptTable &Opts = getDriverOptTable(); 4476 const unsigned IncludedFlagsBitmask = options::CC1Option; 4477 unsigned MissingArgIndex, MissingArgCount; 4478 InputArgList Args = Opts.ParseArgs(CommandLineArgs, MissingArgIndex, 4479 MissingArgCount, IncludedFlagsBitmask); 4480 LangOptions &LangOpts = *Res.getLangOpts(); 4481 4482 // Check for missing argument error. 4483 if (MissingArgCount) 4484 Diags.Report(diag::err_drv_missing_argument) 4485 << Args.getArgString(MissingArgIndex) << MissingArgCount; 4486 4487 // Issue errors on unknown arguments. 4488 for (const auto *A : Args.filtered(OPT_UNKNOWN)) { 4489 auto ArgString = A->getAsString(Args); 4490 std::string Nearest; 4491 if (Opts.findNearest(ArgString, Nearest, IncludedFlagsBitmask) > 1) 4492 Diags.Report(diag::err_drv_unknown_argument) << ArgString; 4493 else 4494 Diags.Report(diag::err_drv_unknown_argument_with_suggestion) 4495 << ArgString << Nearest; 4496 } 4497 4498 ParseFileSystemArgs(Res.getFileSystemOpts(), Args, Diags); 4499 ParseMigratorArgs(Res.getMigratorOpts(), Args, Diags); 4500 ParseAnalyzerArgs(*Res.getAnalyzerOpts(), Args, Diags); 4501 ParseDiagnosticArgs(Res.getDiagnosticOpts(), Args, &Diags, 4502 /*DefaultDiagColor=*/false); 4503 ParseFrontendArgs(Res.getFrontendOpts(), Args, Diags, LangOpts.IsHeaderFile); 4504 // FIXME: We shouldn't have to pass the DashX option around here 4505 InputKind DashX = Res.getFrontendOpts().DashX; 4506 ParseTargetArgs(Res.getTargetOpts(), Args, Diags); 4507 llvm::Triple T(Res.getTargetOpts().Triple); 4508 ParseHeaderSearchArgs(Res.getHeaderSearchOpts(), Args, Diags, 4509 Res.getFileSystemOpts().WorkingDir); 4510 4511 ParseLangArgs(LangOpts, Args, DashX, T, Res.getPreprocessorOpts().Includes, 4512 Diags); 4513 if (Res.getFrontendOpts().ProgramAction == frontend::RewriteObjC) 4514 LangOpts.ObjCExceptions = 1; 4515 4516 for (auto Warning : Res.getDiagnosticOpts().Warnings) { 4517 if (Warning == "misexpect" && 4518 !Diags.isIgnored(diag::warn_profile_data_misexpect, SourceLocation())) { 4519 Res.getCodeGenOpts().MisExpect = true; 4520 } 4521 } 4522 4523 if (LangOpts.CUDA) { 4524 // During CUDA device-side compilation, the aux triple is the 4525 // triple used for host compilation. 4526 if (LangOpts.CUDAIsDevice) 4527 Res.getTargetOpts().HostTriple = Res.getFrontendOpts().AuxTriple; 4528 } 4529 4530 // Set the triple of the host for OpenMP device compile. 4531 if (LangOpts.OpenMPIsDevice) 4532 Res.getTargetOpts().HostTriple = Res.getFrontendOpts().AuxTriple; 4533 4534 ParseCodeGenArgs(Res.getCodeGenOpts(), Args, DashX, Diags, T, 4535 Res.getFrontendOpts().OutputFile, LangOpts); 4536 4537 // FIXME: Override value name discarding when asan or msan is used because the 4538 // backend passes depend on the name of the alloca in order to print out 4539 // names. 4540 Res.getCodeGenOpts().DiscardValueNames &= 4541 !LangOpts.Sanitize.has(SanitizerKind::Address) && 4542 !LangOpts.Sanitize.has(SanitizerKind::KernelAddress) && 4543 !LangOpts.Sanitize.has(SanitizerKind::Memory) && 4544 !LangOpts.Sanitize.has(SanitizerKind::KernelMemory); 4545 4546 ParsePreprocessorArgs(Res.getPreprocessorOpts(), Args, Diags, 4547 Res.getFrontendOpts().ProgramAction, 4548 Res.getFrontendOpts()); 4549 ParsePreprocessorOutputArgs(Res.getPreprocessorOutputOpts(), Args, Diags, 4550 Res.getFrontendOpts().ProgramAction); 4551 4552 ParseDependencyOutputArgs(Res.getDependencyOutputOpts(), Args, Diags, 4553 Res.getFrontendOpts().ProgramAction, 4554 Res.getPreprocessorOutputOpts().ShowLineMarkers); 4555 if (!Res.getDependencyOutputOpts().OutputFile.empty() && 4556 Res.getDependencyOutputOpts().Targets.empty()) 4557 Diags.Report(diag::err_fe_dependency_file_requires_MT); 4558 4559 // If sanitizer is enabled, disable OPT_ffine_grained_bitfield_accesses. 4560 if (Res.getCodeGenOpts().FineGrainedBitfieldAccesses && 4561 !Res.getLangOpts()->Sanitize.empty()) { 4562 Res.getCodeGenOpts().FineGrainedBitfieldAccesses = false; 4563 Diags.Report(diag::warn_drv_fine_grained_bitfield_accesses_ignored); 4564 } 4565 4566 // Store the command-line for using in the CodeView backend. 4567 if (Res.getCodeGenOpts().CodeViewCommandLine) { 4568 Res.getCodeGenOpts().Argv0 = Argv0; 4569 append_range(Res.getCodeGenOpts().CommandLineArgs, CommandLineArgs); 4570 } 4571 4572 FixupInvocation(Res, Diags, Args, DashX); 4573 4574 return Diags.getNumErrors() == NumErrorsBefore; 4575} 4576 4577bool CompilerInvocation::CreateFromArgs(CompilerInvocation &Invocation, 4578 ArrayRef<const char *> CommandLineArgs, 4579 DiagnosticsEngine &Diags, 4580 const char *Argv0) { 4581 CompilerInvocation DummyInvocation; 4582 4583 return RoundTrip( 4584 [](CompilerInvocation &Invocation, ArrayRef<const char *> CommandLineArgs, 4585 DiagnosticsEngine &Diags, const char *Argv0) { 4586 return CreateFromArgsImpl(Invocation, CommandLineArgs, Diags, Argv0); 4587 }, 4588 [](CompilerInvocation &Invocation, SmallVectorImpl<const char *> &Args, 4589 StringAllocator SA) { 4590 Args.push_back("-cc1"); 4591 Invocation.generateCC1CommandLine(Args, SA); 4592 }, 4593 Invocation, DummyInvocation, CommandLineArgs, Diags, Argv0); 4594} 4595 4596std::string CompilerInvocation::getModuleHash() const { 4597 // FIXME: Consider using SHA1 instead of MD5. 4598 llvm::HashBuilder<llvm::MD5, llvm::support::endianness::native> HBuilder; 4599 4600 // Note: For QoI reasons, the things we use as a hash here should all be 4601 // dumped via the -module-info flag. 4602 4603 // Start the signature with the compiler version. 4604 HBuilder.add(getClangFullRepositoryVersion()); 4605 4606 // Also include the serialization version, in case LLVM_APPEND_VC_REV is off 4607 // and getClangFullRepositoryVersion() doesn't include git revision. 4608 HBuilder.add(serialization::VERSION_MAJOR, serialization::VERSION_MINOR); 4609 4610 // Extend the signature with the language options 4611#define LANGOPT(Name, Bits, Default, Description) HBuilder.add(LangOpts->Name); 4612#define ENUM_LANGOPT(Name, Type, Bits, Default, Description) \ 4613 HBuilder.add(static_cast<unsigned>(LangOpts->get##Name())); 4614#define BENIGN_LANGOPT(Name, Bits, Default, Description) 4615#define BENIGN_ENUM_LANGOPT(Name, Type, Bits, Default, Description) 4616#include "clang/Basic/LangOptions.def" 4617 4618 HBuilder.addRange(LangOpts->ModuleFeatures); 4619 4620 HBuilder.add(LangOpts->ObjCRuntime); 4621 HBuilder.addRange(LangOpts->CommentOpts.BlockCommandNames); 4622 4623 // Extend the signature with the target options. 4624 HBuilder.add(TargetOpts->Triple, TargetOpts->CPU, TargetOpts->TuneCPU, 4625 TargetOpts->ABI); 4626 HBuilder.addRange(TargetOpts->FeaturesAsWritten); 4627 4628 // Extend the signature with preprocessor options. 4629 const PreprocessorOptions &ppOpts = getPreprocessorOpts(); 4630 HBuilder.add(ppOpts.UsePredefines, ppOpts.DetailedRecord); 4631 4632 const HeaderSearchOptions &hsOpts = getHeaderSearchOpts(); 4633 for (const auto &Macro : getPreprocessorOpts().Macros) { 4634 // If we're supposed to ignore this macro for the purposes of modules, 4635 // don't put it into the hash. 4636 if (!hsOpts.ModulesIgnoreMacros.empty()) { 4637 // Check whether we're ignoring this macro. 4638 StringRef MacroDef = Macro.first; 4639 if (hsOpts.ModulesIgnoreMacros.count( 4640 llvm::CachedHashString(MacroDef.split('=').first))) 4641 continue; 4642 } 4643 4644 HBuilder.add(Macro); 4645 } 4646 4647 // Extend the signature with the sysroot and other header search options. 4648 HBuilder.add(hsOpts.Sysroot, hsOpts.ModuleFormat, hsOpts.UseDebugInfo, 4649 hsOpts.UseBuiltinIncludes, hsOpts.UseStandardSystemIncludes, 4650 hsOpts.UseStandardCXXIncludes, hsOpts.UseLibcxx, 4651 hsOpts.ModulesValidateDiagnosticOptions); 4652 HBuilder.add(hsOpts.ResourceDir); 4653 4654 if (hsOpts.ModulesStrictContextHash) { 4655 HBuilder.addRange(hsOpts.SystemHeaderPrefixes); 4656 HBuilder.addRange(hsOpts.UserEntries); 4657 4658 const DiagnosticOptions &diagOpts = getDiagnosticOpts(); 4659#define DIAGOPT(Name, Bits, Default) HBuilder.add(diagOpts.Name); 4660#define ENUM_DIAGOPT(Name, Type, Bits, Default) \ 4661 HBuilder.add(diagOpts.get##Name()); 4662#include "clang/Basic/DiagnosticOptions.def" 4663#undef DIAGOPT 4664#undef ENUM_DIAGOPT 4665 } 4666 4667 // Extend the signature with the user build path. 4668 HBuilder.add(hsOpts.ModuleUserBuildPath); 4669 4670 // Extend the signature with the module file extensions. 4671 for (const auto &ext : getFrontendOpts().ModuleFileExtensions) 4672 ext->hashExtension(HBuilder); 4673 4674 // When compiling with -gmodules, also hash -fdebug-prefix-map as it 4675 // affects the debug info in the PCM. 4676 if (getCodeGenOpts().DebugTypeExtRefs) 4677 HBuilder.addRange(getCodeGenOpts().DebugPrefixMap); 4678 4679 // Extend the signature with the enabled sanitizers, if at least one is 4680 // enabled. Sanitizers which cannot affect AST generation aren't hashed. 4681 SanitizerSet SanHash = LangOpts->Sanitize; 4682 SanHash.clear(getPPTransparentSanitizers()); 4683 if (!SanHash.empty()) 4684 HBuilder.add(SanHash.Mask); 4685 4686 llvm::MD5::MD5Result Result; 4687 HBuilder.getHasher().final(Result); 4688 uint64_t Hash = Result.high() ^ Result.low(); 4689 return toString(llvm::APInt(64, Hash), 36, /*Signed=*/false); 4690} 4691 4692void CompilerInvocation::generateCC1CommandLine( 4693 SmallVectorImpl<const char *> &Args, StringAllocator SA) const { 4694 llvm::Triple T(TargetOpts->Triple); 4695 4696 GenerateFileSystemArgs(FileSystemOpts, Args, SA); 4697 GenerateMigratorArgs(MigratorOpts, Args, SA); 4698 GenerateAnalyzerArgs(*AnalyzerOpts, Args, SA); 4699 GenerateDiagnosticArgs(*DiagnosticOpts, Args, SA, false); 4700 GenerateFrontendArgs(FrontendOpts, Args, SA, LangOpts->IsHeaderFile); 4701 GenerateTargetArgs(*TargetOpts, Args, SA); 4702 GenerateHeaderSearchArgs(*HeaderSearchOpts, Args, SA); 4703 GenerateLangArgs(*LangOpts, Args, SA, T, FrontendOpts.DashX); 4704 GenerateCodeGenArgs(CodeGenOpts, Args, SA, T, FrontendOpts.OutputFile, 4705 &*LangOpts); 4706 GeneratePreprocessorArgs(*PreprocessorOpts, Args, SA, *LangOpts, FrontendOpts, 4707 CodeGenOpts); 4708 GeneratePreprocessorOutputArgs(PreprocessorOutputOpts, Args, SA, 4709 FrontendOpts.ProgramAction); 4710 GenerateDependencyOutputArgs(DependencyOutputOpts, Args, SA); 4711} 4712 4713std::vector<std::string> CompilerInvocation::getCC1CommandLine() const { 4714 // Set up string allocator. 4715 llvm::BumpPtrAllocator Alloc; 4716 llvm::StringSaver Strings(Alloc); 4717 auto SA = [&Strings](const Twine &Arg) { return Strings.save(Arg).data(); }; 4718 4719 // Synthesize full command line from the CompilerInvocation, including "-cc1". 4720 SmallVector<const char *, 32> Args{"-cc1"}; 4721 generateCC1CommandLine(Args, SA); 4722 4723 // Convert arguments to the return type. 4724 return std::vector<std::string>{Args.begin(), Args.end()}; 4725} 4726 4727void CompilerInvocation::resetNonModularOptions() { 4728 getLangOpts()->resetNonModularOptions(); 4729 getPreprocessorOpts().resetNonModularOptions(); 4730} 4731 4732void CompilerInvocation::clearImplicitModuleBuildOptions() { 4733 getLangOpts()->ImplicitModules = false; 4734 getHeaderSearchOpts().ImplicitModuleMaps = false; 4735 getHeaderSearchOpts().ModuleCachePath.clear(); 4736 getHeaderSearchOpts().ModulesValidateOncePerBuildSession = false; 4737 getHeaderSearchOpts().BuildSessionTimestamp = 0; 4738 // The specific values we canonicalize to for pruning don't affect behaviour, 4739 /// so use the default values so they may be dropped from the command-line. 4740 getHeaderSearchOpts().ModuleCachePruneInterval = 7 * 24 * 60 * 60; 4741 getHeaderSearchOpts().ModuleCachePruneAfter = 31 * 24 * 60 * 60; 4742} 4743 4744IntrusiveRefCntPtr<llvm::vfs::FileSystem> 4745clang::createVFSFromCompilerInvocation(const CompilerInvocation &CI, 4746 DiagnosticsEngine &Diags) { 4747 return createVFSFromCompilerInvocation(CI, Diags, 4748 llvm::vfs::getRealFileSystem()); 4749} 4750 4751IntrusiveRefCntPtr<llvm::vfs::FileSystem> 4752clang::createVFSFromCompilerInvocation( 4753 const CompilerInvocation &CI, DiagnosticsEngine &Diags, 4754 IntrusiveRefCntPtr<llvm::vfs::FileSystem> BaseFS) { 4755 return createVFSFromOverlayFiles(CI.getHeaderSearchOpts().VFSOverlayFiles, 4756 Diags, std::move(BaseFS)); 4757} 4758 4759IntrusiveRefCntPtr<llvm::vfs::FileSystem> clang::createVFSFromOverlayFiles( 4760 ArrayRef<std::string> VFSOverlayFiles, DiagnosticsEngine &Diags, 4761 IntrusiveRefCntPtr<llvm::vfs::FileSystem> BaseFS) { 4762 if (VFSOverlayFiles.empty()) 4763 return BaseFS; 4764 4765 IntrusiveRefCntPtr<llvm::vfs::FileSystem> Result = BaseFS; 4766 // earlier vfs files are on the bottom 4767 for (const auto &File : VFSOverlayFiles) { 4768 llvm::ErrorOr<std::unique_ptr<llvm::MemoryBuffer>> Buffer = 4769 Result->getBufferForFile(File); 4770 if (!Buffer) { 4771 Diags.Report(diag::err_missing_vfs_overlay_file) << File; 4772 continue; 4773 } 4774 4775 IntrusiveRefCntPtr<llvm::vfs::FileSystem> FS = llvm::vfs::getVFSFromYAML( 4776 std::move(Buffer.get()), /*DiagHandler*/ nullptr, File, 4777 /*DiagContext*/ nullptr, Result); 4778 if (!FS) { 4779 Diags.Report(diag::err_invalid_vfs_overlay) << File; 4780 continue; 4781 } 4782 4783 Result = FS; 4784 } 4785 return Result; 4786} 4787