1 //===- CompilerInvocation.cpp ---------------------------------------------===// 2 // 3 // The LLVM Compiler Infrastructure 4 // 5 // This file is distributed under the University of Illinois Open Source 6 // License. See LICENSE.TXT for details. 7 // 8 //===----------------------------------------------------------------------===// 9 10 #include "clang/Frontend/CompilerInvocation.h" 11 #include "TestModuleFileExtension.h" 12 #include "clang/Basic/Builtins.h" 13 #include "clang/Basic/CharInfo.h" 14 #include "clang/Basic/CommentOptions.h" 15 #include "clang/Basic/DebugInfoOptions.h" 16 #include "clang/Basic/Diagnostic.h" 17 #include "clang/Basic/DiagnosticOptions.h" 18 #include "clang/Basic/FileSystemOptions.h" 19 #include "clang/Basic/LLVM.h" 20 #include "clang/Basic/LangOptions.h" 21 #include "clang/Basic/ObjCRuntime.h" 22 #include "clang/Basic/Sanitizers.h" 23 #include "clang/Basic/SourceLocation.h" 24 #include "clang/Basic/TargetOptions.h" 25 #include "clang/Basic/Version.h" 26 #include "clang/Basic/VirtualFileSystem.h" 27 #include "clang/Basic/Visibility.h" 28 #include "clang/Basic/XRayInstr.h" 29 #include "clang/Config/config.h" 30 #include "clang/Driver/DriverDiagnostic.h" 31 #include "clang/Driver/Options.h" 32 #include "clang/Frontend/CodeGenOptions.h" 33 #include "clang/Frontend/CommandLineSourceLoc.h" 34 #include "clang/Frontend/DependencyOutputOptions.h" 35 #include "clang/Frontend/FrontendDiagnostic.h" 36 #include "clang/Frontend/FrontendOptions.h" 37 #include "clang/Frontend/LangStandard.h" 38 #include "clang/Frontend/MigratorOptions.h" 39 #include "clang/Frontend/PreprocessorOutputOptions.h" 40 #include "clang/Frontend/Utils.h" 41 #include "clang/Lex/HeaderSearchOptions.h" 42 #include "clang/Lex/PreprocessorOptions.h" 43 #include "clang/Sema/CodeCompleteOptions.h" 44 #include "clang/Serialization/ModuleFileExtension.h" 45 #include "clang/StaticAnalyzer/Core/AnalyzerOptions.h" 46 #include "llvm/ADT/APInt.h" 47 #include "llvm/ADT/ArrayRef.h" 48 #include "llvm/ADT/CachedHashString.h" 49 #include "llvm/ADT/Hashing.h" 50 #include "llvm/ADT/None.h" 51 #include "llvm/ADT/Optional.h" 52 #include "llvm/ADT/SmallString.h" 53 #include "llvm/ADT/SmallVector.h" 54 #include "llvm/ADT/StringRef.h" 55 #include "llvm/ADT/StringSwitch.h" 56 #include "llvm/ADT/Triple.h" 57 #include "llvm/ADT/Twine.h" 58 #include "llvm/Linker/Linker.h" 59 #include "llvm/MC/MCTargetOptions.h" 60 #include "llvm/Option/Arg.h" 61 #include "llvm/Option/ArgList.h" 62 #include "llvm/Option/OptSpecifier.h" 63 #include "llvm/Option/OptTable.h" 64 #include "llvm/Option/Option.h" 65 #include "llvm/ProfileData/InstrProfReader.h" 66 #include "llvm/Support/CodeGen.h" 67 #include "llvm/Support/Compiler.h" 68 #include "llvm/Support/Error.h" 69 #include "llvm/Support/ErrorHandling.h" 70 #include "llvm/Support/ErrorOr.h" 71 #include "llvm/Support/FileSystem.h" 72 #include "llvm/Support/Host.h" 73 #include "llvm/Support/MathExtras.h" 74 #include "llvm/Support/MemoryBuffer.h" 75 #include "llvm/Support/Path.h" 76 #include "llvm/Support/Process.h" 77 #include "llvm/Support/Regex.h" 78 #include "llvm/Support/VersionTuple.h" 79 #include "llvm/Support/raw_ostream.h" 80 #include "llvm/Target/TargetOptions.h" 81 #include <algorithm> 82 #include <atomic> 83 #include <cassert> 84 #include <cstddef> 85 #include <cstring> 86 #include <memory> 87 #include <string> 88 #include <tuple> 89 #include <utility> 90 #include <vector> 91 92 using namespace clang; 93 using namespace driver; 94 using namespace options; 95 using namespace llvm::opt; 96 97 //===----------------------------------------------------------------------===// 98 // Initialization. 99 //===----------------------------------------------------------------------===// 100 101 CompilerInvocationBase::CompilerInvocationBase() 102 : LangOpts(new LangOptions()), TargetOpts(new TargetOptions()), 103 DiagnosticOpts(new DiagnosticOptions()), 104 HeaderSearchOpts(new HeaderSearchOptions()), 105 PreprocessorOpts(new PreprocessorOptions()) {} 106 107 CompilerInvocationBase::CompilerInvocationBase(const CompilerInvocationBase &X) 108 : LangOpts(new LangOptions(*X.getLangOpts())), 109 TargetOpts(new TargetOptions(X.getTargetOpts())), 110 DiagnosticOpts(new DiagnosticOptions(X.getDiagnosticOpts())), 111 HeaderSearchOpts(new HeaderSearchOptions(X.getHeaderSearchOpts())), 112 PreprocessorOpts(new PreprocessorOptions(X.getPreprocessorOpts())) {} 113 114 CompilerInvocationBase::~CompilerInvocationBase() = default; 115 116 //===----------------------------------------------------------------------===// 117 // Deserialization (from args) 118 //===----------------------------------------------------------------------===// 119 120 static unsigned getOptimizationLevel(ArgList &Args, InputKind IK, 121 DiagnosticsEngine &Diags) { 122 unsigned DefaultOpt = 0; 123 if (IK.getLanguage() == InputKind::OpenCL && !Args.hasArg(OPT_cl_opt_disable)) 124 DefaultOpt = 2; 125 126 if (Arg *A = Args.getLastArg(options::OPT_O_Group)) { 127 if (A->getOption().matches(options::OPT_O0)) 128 return 0; 129 130 if (A->getOption().matches(options::OPT_Ofast)) 131 return 3; 132 133 assert(A->getOption().matches(options::OPT_O)); 134 135 StringRef S(A->getValue()); 136 if (S == "s" || S == "z" || S.empty()) 137 return 2; 138 139 if (S == "g") 140 return 1; 141 142 return getLastArgIntValue(Args, OPT_O, DefaultOpt, Diags); 143 } 144 145 return DefaultOpt; 146 } 147 148 static unsigned getOptimizationLevelSize(ArgList &Args) { 149 if (Arg *A = Args.getLastArg(options::OPT_O_Group)) { 150 if (A->getOption().matches(options::OPT_O)) { 151 switch (A->getValue()[0]) { 152 default: 153 return 0; 154 case 's': 155 return 1; 156 case 'z': 157 return 2; 158 } 159 } 160 } 161 return 0; 162 } 163 164 static void addDiagnosticArgs(ArgList &Args, OptSpecifier Group, 165 OptSpecifier GroupWithValue, 166 std::vector<std::string> &Diagnostics) { 167 for (auto *A : Args.filtered(Group)) { 168 if (A->getOption().getKind() == Option::FlagClass) { 169 // The argument is a pure flag (such as OPT_Wall or OPT_Wdeprecated). Add 170 // its name (minus the "W" or "R" at the beginning) to the warning list. 171 Diagnostics.push_back(A->getOption().getName().drop_front(1)); 172 } else if (A->getOption().matches(GroupWithValue)) { 173 // This is -Wfoo= or -Rfoo=, where foo is the name of the diagnostic group. 174 Diagnostics.push_back(A->getOption().getName().drop_front(1).rtrim("=-")); 175 } else { 176 // Otherwise, add its value (for OPT_W_Joined and similar). 177 for (const auto *Arg : A->getValues()) 178 Diagnostics.emplace_back(Arg); 179 } 180 } 181 } 182 183 static void getAllNoBuiltinFuncValues(ArgList &Args, 184 std::vector<std::string> &Funcs) { 185 SmallVector<const char *, 8> Values; 186 for (const auto &Arg : Args) { 187 const Option &O = Arg->getOption(); 188 if (O.matches(options::OPT_fno_builtin_)) { 189 const char *FuncName = Arg->getValue(); 190 if (Builtin::Context::isBuiltinFunc(FuncName)) 191 Values.push_back(FuncName); 192 } 193 } 194 Funcs.insert(Funcs.end(), Values.begin(), Values.end()); 195 } 196 197 static bool ParseAnalyzerArgs(AnalyzerOptions &Opts, ArgList &Args, 198 DiagnosticsEngine &Diags) { 199 bool Success = true; 200 if (Arg *A = Args.getLastArg(OPT_analyzer_store)) { 201 StringRef Name = A->getValue(); 202 AnalysisStores Value = llvm::StringSwitch<AnalysisStores>(Name) 203 #define ANALYSIS_STORE(NAME, CMDFLAG, DESC, CREATFN) \ 204 .Case(CMDFLAG, NAME##Model) 205 #include "clang/StaticAnalyzer/Core/Analyses.def" 206 .Default(NumStores); 207 if (Value == NumStores) { 208 Diags.Report(diag::err_drv_invalid_value) 209 << A->getAsString(Args) << Name; 210 Success = false; 211 } else { 212 Opts.AnalysisStoreOpt = Value; 213 } 214 } 215 216 if (Arg *A = Args.getLastArg(OPT_analyzer_constraints)) { 217 StringRef Name = A->getValue(); 218 AnalysisConstraints Value = llvm::StringSwitch<AnalysisConstraints>(Name) 219 #define ANALYSIS_CONSTRAINTS(NAME, CMDFLAG, DESC, CREATFN) \ 220 .Case(CMDFLAG, NAME##Model) 221 #include "clang/StaticAnalyzer/Core/Analyses.def" 222 .Default(NumConstraints); 223 if (Value == NumConstraints) { 224 Diags.Report(diag::err_drv_invalid_value) 225 << A->getAsString(Args) << Name; 226 Success = false; 227 } else { 228 Opts.AnalysisConstraintsOpt = Value; 229 } 230 } 231 232 if (Arg *A = Args.getLastArg(OPT_analyzer_output)) { 233 StringRef Name = A->getValue(); 234 AnalysisDiagClients Value = llvm::StringSwitch<AnalysisDiagClients>(Name) 235 #define ANALYSIS_DIAGNOSTICS(NAME, CMDFLAG, DESC, CREATFN) \ 236 .Case(CMDFLAG, PD_##NAME) 237 #include "clang/StaticAnalyzer/Core/Analyses.def" 238 .Default(NUM_ANALYSIS_DIAG_CLIENTS); 239 if (Value == NUM_ANALYSIS_DIAG_CLIENTS) { 240 Diags.Report(diag::err_drv_invalid_value) 241 << A->getAsString(Args) << Name; 242 Success = false; 243 } else { 244 Opts.AnalysisDiagOpt = Value; 245 } 246 } 247 248 if (Arg *A = Args.getLastArg(OPT_analyzer_purge)) { 249 StringRef Name = A->getValue(); 250 AnalysisPurgeMode Value = llvm::StringSwitch<AnalysisPurgeMode>(Name) 251 #define ANALYSIS_PURGE(NAME, CMDFLAG, DESC) \ 252 .Case(CMDFLAG, NAME) 253 #include "clang/StaticAnalyzer/Core/Analyses.def" 254 .Default(NumPurgeModes); 255 if (Value == NumPurgeModes) { 256 Diags.Report(diag::err_drv_invalid_value) 257 << A->getAsString(Args) << Name; 258 Success = false; 259 } else { 260 Opts.AnalysisPurgeOpt = Value; 261 } 262 } 263 264 if (Arg *A = Args.getLastArg(OPT_analyzer_inlining_mode)) { 265 StringRef Name = A->getValue(); 266 AnalysisInliningMode Value = llvm::StringSwitch<AnalysisInliningMode>(Name) 267 #define ANALYSIS_INLINING_MODE(NAME, CMDFLAG, DESC) \ 268 .Case(CMDFLAG, NAME) 269 #include "clang/StaticAnalyzer/Core/Analyses.def" 270 .Default(NumInliningModes); 271 if (Value == NumInliningModes) { 272 Diags.Report(diag::err_drv_invalid_value) 273 << A->getAsString(Args) << Name; 274 Success = false; 275 } else { 276 Opts.InliningMode = Value; 277 } 278 } 279 280 Opts.ShowCheckerHelp = Args.hasArg(OPT_analyzer_checker_help); 281 Opts.ShowEnabledCheckerList = Args.hasArg(OPT_analyzer_list_enabled_checkers); 282 Opts.DisableAllChecks = Args.hasArg(OPT_analyzer_disable_all_checks); 283 284 Opts.visualizeExplodedGraphWithGraphViz = 285 Args.hasArg(OPT_analyzer_viz_egraph_graphviz); 286 Opts.visualizeExplodedGraphWithUbiGraph = 287 Args.hasArg(OPT_analyzer_viz_egraph_ubigraph); 288 Opts.NoRetryExhausted = Args.hasArg(OPT_analyzer_disable_retry_exhausted); 289 Opts.AnalyzeAll = Args.hasArg(OPT_analyzer_opt_analyze_headers); 290 Opts.AnalyzerDisplayProgress = Args.hasArg(OPT_analyzer_display_progress); 291 Opts.AnalyzeNestedBlocks = 292 Args.hasArg(OPT_analyzer_opt_analyze_nested_blocks); 293 Opts.eagerlyAssumeBinOpBifurcation = Args.hasArg(OPT_analyzer_eagerly_assume); 294 Opts.AnalyzeSpecificFunction = Args.getLastArgValue(OPT_analyze_function); 295 Opts.UnoptimizedCFG = Args.hasArg(OPT_analysis_UnoptimizedCFG); 296 Opts.TrimGraph = Args.hasArg(OPT_trim_egraph); 297 Opts.maxBlockVisitOnPath = 298 getLastArgIntValue(Args, OPT_analyzer_max_loop, 4, Diags); 299 Opts.PrintStats = Args.hasArg(OPT_analyzer_stats); 300 Opts.InlineMaxStackDepth = 301 getLastArgIntValue(Args, OPT_analyzer_inline_max_stack_depth, 302 Opts.InlineMaxStackDepth, Diags); 303 304 Opts.CheckersControlList.clear(); 305 for (const Arg *A : 306 Args.filtered(OPT_analyzer_checker, OPT_analyzer_disable_checker)) { 307 A->claim(); 308 bool enable = (A->getOption().getID() == OPT_analyzer_checker); 309 // We can have a list of comma separated checker names, e.g: 310 // '-analyzer-checker=cocoa,unix' 311 StringRef checkerList = A->getValue(); 312 SmallVector<StringRef, 4> checkers; 313 checkerList.split(checkers, ","); 314 for (auto checker : checkers) 315 Opts.CheckersControlList.emplace_back(checker, enable); 316 } 317 318 // Go through the analyzer configuration options. 319 for (const auto *A : Args.filtered(OPT_analyzer_config)) { 320 A->claim(); 321 // We can have a list of comma separated config names, e.g: 322 // '-analyzer-config key1=val1,key2=val2' 323 StringRef configList = A->getValue(); 324 SmallVector<StringRef, 4> configVals; 325 configList.split(configVals, ","); 326 for (const auto &configVal : configVals) { 327 StringRef key, val; 328 std::tie(key, val) = configVal.split("="); 329 if (val.empty()) { 330 Diags.Report(SourceLocation(), 331 diag::err_analyzer_config_no_value) << configVal; 332 Success = false; 333 break; 334 } 335 if (val.find('=') != StringRef::npos) { 336 Diags.Report(SourceLocation(), 337 diag::err_analyzer_config_multiple_values) 338 << configVal; 339 Success = false; 340 break; 341 } 342 Opts.Config[key] = val; 343 } 344 } 345 346 llvm::raw_string_ostream os(Opts.FullCompilerInvocation); 347 for (unsigned i = 0; i < Args.getNumInputArgStrings(); ++i) { 348 if (i != 0) 349 os << " "; 350 os << Args.getArgString(i); 351 } 352 os.flush(); 353 354 return Success; 355 } 356 357 static bool ParseMigratorArgs(MigratorOptions &Opts, ArgList &Args) { 358 Opts.NoNSAllocReallocError = Args.hasArg(OPT_migrator_no_nsalloc_error); 359 Opts.NoFinalizeRemoval = Args.hasArg(OPT_migrator_no_finalize_removal); 360 return true; 361 } 362 363 static void ParseCommentArgs(CommentOptions &Opts, ArgList &Args) { 364 Opts.BlockCommandNames = Args.getAllArgValues(OPT_fcomment_block_commands); 365 Opts.ParseAllComments = Args.hasArg(OPT_fparse_all_comments); 366 } 367 368 static StringRef getCodeModel(ArgList &Args, DiagnosticsEngine &Diags) { 369 if (Arg *A = Args.getLastArg(OPT_mcode_model)) { 370 StringRef Value = A->getValue(); 371 if (Value == "small" || Value == "kernel" || Value == "medium" || 372 Value == "large") 373 return Value; 374 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Value; 375 } 376 return "default"; 377 } 378 379 static llvm::Reloc::Model getRelocModel(ArgList &Args, 380 DiagnosticsEngine &Diags) { 381 if (Arg *A = Args.getLastArg(OPT_mrelocation_model)) { 382 StringRef Value = A->getValue(); 383 auto RM = llvm::StringSwitch<llvm::Optional<llvm::Reloc::Model>>(Value) 384 .Case("static", llvm::Reloc::Static) 385 .Case("pic", llvm::Reloc::PIC_) 386 .Case("ropi", llvm::Reloc::ROPI) 387 .Case("rwpi", llvm::Reloc::RWPI) 388 .Case("ropi-rwpi", llvm::Reloc::ROPI_RWPI) 389 .Case("dynamic-no-pic", llvm::Reloc::DynamicNoPIC) 390 .Default(None); 391 if (RM.hasValue()) 392 return *RM; 393 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Value; 394 } 395 return llvm::Reloc::PIC_; 396 } 397 398 /// Create a new Regex instance out of the string value in \p RpassArg. 399 /// It returns a pointer to the newly generated Regex instance. 400 static std::shared_ptr<llvm::Regex> 401 GenerateOptimizationRemarkRegex(DiagnosticsEngine &Diags, ArgList &Args, 402 Arg *RpassArg) { 403 StringRef Val = RpassArg->getValue(); 404 std::string RegexError; 405 std::shared_ptr<llvm::Regex> Pattern = std::make_shared<llvm::Regex>(Val); 406 if (!Pattern->isValid(RegexError)) { 407 Diags.Report(diag::err_drv_optimization_remark_pattern) 408 << RegexError << RpassArg->getAsString(Args); 409 Pattern.reset(); 410 } 411 return Pattern; 412 } 413 414 static bool parseDiagnosticLevelMask(StringRef FlagName, 415 const std::vector<std::string> &Levels, 416 DiagnosticsEngine *Diags, 417 DiagnosticLevelMask &M) { 418 bool Success = true; 419 for (const auto &Level : Levels) { 420 DiagnosticLevelMask const PM = 421 llvm::StringSwitch<DiagnosticLevelMask>(Level) 422 .Case("note", DiagnosticLevelMask::Note) 423 .Case("remark", DiagnosticLevelMask::Remark) 424 .Case("warning", DiagnosticLevelMask::Warning) 425 .Case("error", DiagnosticLevelMask::Error) 426 .Default(DiagnosticLevelMask::None); 427 if (PM == DiagnosticLevelMask::None) { 428 Success = false; 429 if (Diags) 430 Diags->Report(diag::err_drv_invalid_value) << FlagName << Level; 431 } 432 M = M | PM; 433 } 434 return Success; 435 } 436 437 static void parseSanitizerKinds(StringRef FlagName, 438 const std::vector<std::string> &Sanitizers, 439 DiagnosticsEngine &Diags, SanitizerSet &S) { 440 for (const auto &Sanitizer : Sanitizers) { 441 SanitizerMask K = parseSanitizerValue(Sanitizer, /*AllowGroups=*/false); 442 if (K == 0) 443 Diags.Report(diag::err_drv_invalid_value) << FlagName << Sanitizer; 444 else 445 S.set(K, true); 446 } 447 } 448 449 static void parseXRayInstrumentationBundle(StringRef FlagName, StringRef Bundle, 450 ArgList &Args, DiagnosticsEngine &D, 451 XRayInstrSet &S) { 452 llvm::SmallVector<StringRef, 2> BundleParts; 453 llvm::SplitString(Bundle, BundleParts, ","); 454 for (const auto B : BundleParts) { 455 auto Mask = parseXRayInstrValue(B); 456 if (Mask == XRayInstrKind::None) 457 if (B != "none") 458 D.Report(diag::err_drv_invalid_value) << FlagName << Bundle; 459 else 460 S.Mask = Mask; 461 else if (Mask == XRayInstrKind::All) 462 S.Mask = Mask; 463 else 464 S.set(Mask, true); 465 } 466 } 467 468 // Set the profile kind for fprofile-instrument. 469 static void setPGOInstrumentor(CodeGenOptions &Opts, ArgList &Args, 470 DiagnosticsEngine &Diags) { 471 Arg *A = Args.getLastArg(OPT_fprofile_instrument_EQ); 472 if (A == nullptr) 473 return; 474 StringRef S = A->getValue(); 475 unsigned I = llvm::StringSwitch<unsigned>(S) 476 .Case("none", CodeGenOptions::ProfileNone) 477 .Case("clang", CodeGenOptions::ProfileClangInstr) 478 .Case("llvm", CodeGenOptions::ProfileIRInstr) 479 .Default(~0U); 480 if (I == ~0U) { 481 Diags.Report(diag::err_drv_invalid_pgo_instrumentor) << A->getAsString(Args) 482 << S; 483 return; 484 } 485 auto Instrumentor = static_cast<CodeGenOptions::ProfileInstrKind>(I); 486 Opts.setProfileInstr(Instrumentor); 487 } 488 489 // Set the profile kind using fprofile-instrument-use-path. 490 static void setPGOUseInstrumentor(CodeGenOptions &Opts, 491 const Twine &ProfileName) { 492 auto ReaderOrErr = llvm::IndexedInstrProfReader::create(ProfileName); 493 // In error, return silently and let Clang PGOUse report the error message. 494 if (auto E = ReaderOrErr.takeError()) { 495 llvm::consumeError(std::move(E)); 496 Opts.setProfileUse(CodeGenOptions::ProfileClangInstr); 497 return; 498 } 499 std::unique_ptr<llvm::IndexedInstrProfReader> PGOReader = 500 std::move(ReaderOrErr.get()); 501 if (PGOReader->isIRLevelProfile()) 502 Opts.setProfileUse(CodeGenOptions::ProfileIRInstr); 503 else 504 Opts.setProfileUse(CodeGenOptions::ProfileClangInstr); 505 } 506 507 static bool ParseCodeGenArgs(CodeGenOptions &Opts, ArgList &Args, InputKind IK, 508 DiagnosticsEngine &Diags, 509 const TargetOptions &TargetOpts, 510 const FrontendOptions &FrontendOpts) { 511 bool Success = true; 512 llvm::Triple Triple = llvm::Triple(TargetOpts.Triple); 513 514 unsigned OptimizationLevel = getOptimizationLevel(Args, IK, Diags); 515 // TODO: This could be done in Driver 516 unsigned MaxOptLevel = 3; 517 if (OptimizationLevel > MaxOptLevel) { 518 // If the optimization level is not supported, fall back on the default 519 // optimization 520 Diags.Report(diag::warn_drv_optimization_value) 521 << Args.getLastArg(OPT_O)->getAsString(Args) << "-O" << MaxOptLevel; 522 OptimizationLevel = MaxOptLevel; 523 } 524 Opts.OptimizationLevel = OptimizationLevel; 525 526 // At O0 we want to fully disable inlining outside of cases marked with 527 // 'alwaysinline' that are required for correctness. 528 Opts.setInlining((Opts.OptimizationLevel == 0) 529 ? CodeGenOptions::OnlyAlwaysInlining 530 : CodeGenOptions::NormalInlining); 531 // Explicit inlining flags can disable some or all inlining even at 532 // optimization levels above zero. 533 if (Arg *InlineArg = Args.getLastArg( 534 options::OPT_finline_functions, options::OPT_finline_hint_functions, 535 options::OPT_fno_inline_functions, options::OPT_fno_inline)) { 536 if (Opts.OptimizationLevel > 0) { 537 const Option &InlineOpt = InlineArg->getOption(); 538 if (InlineOpt.matches(options::OPT_finline_functions)) 539 Opts.setInlining(CodeGenOptions::NormalInlining); 540 else if (InlineOpt.matches(options::OPT_finline_hint_functions)) 541 Opts.setInlining(CodeGenOptions::OnlyHintInlining); 542 else 543 Opts.setInlining(CodeGenOptions::OnlyAlwaysInlining); 544 } 545 } 546 547 Opts.ExperimentalNewPassManager = Args.hasFlag( 548 OPT_fexperimental_new_pass_manager, OPT_fno_experimental_new_pass_manager, 549 /* Default */ ENABLE_EXPERIMENTAL_NEW_PASS_MANAGER); 550 551 Opts.DebugPassManager = 552 Args.hasFlag(OPT_fdebug_pass_manager, OPT_fno_debug_pass_manager, 553 /* Default */ false); 554 555 if (Arg *A = Args.getLastArg(OPT_fveclib)) { 556 StringRef Name = A->getValue(); 557 if (Name == "Accelerate") 558 Opts.setVecLib(CodeGenOptions::Accelerate); 559 else if (Name == "SVML") 560 Opts.setVecLib(CodeGenOptions::SVML); 561 else if (Name == "none") 562 Opts.setVecLib(CodeGenOptions::NoLibrary); 563 else 564 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Name; 565 } 566 567 if (Arg *A = Args.getLastArg(OPT_debug_info_kind_EQ)) { 568 unsigned Val = 569 llvm::StringSwitch<unsigned>(A->getValue()) 570 .Case("line-tables-only", codegenoptions::DebugLineTablesOnly) 571 .Case("limited", codegenoptions::LimitedDebugInfo) 572 .Case("standalone", codegenoptions::FullDebugInfo) 573 .Default(~0U); 574 if (Val == ~0U) 575 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) 576 << A->getValue(); 577 else 578 Opts.setDebugInfo(static_cast<codegenoptions::DebugInfoKind>(Val)); 579 } 580 if (Arg *A = Args.getLastArg(OPT_debugger_tuning_EQ)) { 581 unsigned Val = llvm::StringSwitch<unsigned>(A->getValue()) 582 .Case("gdb", unsigned(llvm::DebuggerKind::GDB)) 583 .Case("lldb", unsigned(llvm::DebuggerKind::LLDB)) 584 .Case("sce", unsigned(llvm::DebuggerKind::SCE)) 585 .Default(~0U); 586 if (Val == ~0U) 587 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) 588 << A->getValue(); 589 else 590 Opts.setDebuggerTuning(static_cast<llvm::DebuggerKind>(Val)); 591 } 592 Opts.DwarfVersion = getLastArgIntValue(Args, OPT_dwarf_version_EQ, 0, Diags); 593 Opts.DebugColumnInfo = Args.hasArg(OPT_dwarf_column_info); 594 Opts.EmitCodeView = Args.hasArg(OPT_gcodeview); 595 Opts.MacroDebugInfo = Args.hasArg(OPT_debug_info_macro); 596 Opts.WholeProgramVTables = Args.hasArg(OPT_fwhole_program_vtables); 597 Opts.LTOVisibilityPublicStd = Args.hasArg(OPT_flto_visibility_public_std); 598 Opts.EnableSplitDwarf = Args.hasArg(OPT_enable_split_dwarf); 599 Opts.SplitDwarfFile = Args.getLastArgValue(OPT_split_dwarf_file); 600 Opts.SplitDwarfInlining = !Args.hasArg(OPT_fno_split_dwarf_inlining); 601 Opts.DebugTypeExtRefs = Args.hasArg(OPT_dwarf_ext_refs); 602 Opts.DebugExplicitImport = Args.hasArg(OPT_dwarf_explicit_import); 603 Opts.DebugFwdTemplateParams = Args.hasArg(OPT_debug_forward_template_params); 604 Opts.EmbedSource = Args.hasArg(OPT_gembed_source); 605 606 for (const auto &Arg : Args.getAllArgValues(OPT_fdebug_prefix_map_EQ)) 607 Opts.DebugPrefixMap.insert(StringRef(Arg).split('=')); 608 609 if (const Arg *A = 610 Args.getLastArg(OPT_emit_llvm_uselists, OPT_no_emit_llvm_uselists)) 611 Opts.EmitLLVMUseLists = A->getOption().getID() == OPT_emit_llvm_uselists; 612 613 Opts.DisableLLVMPasses = Args.hasArg(OPT_disable_llvm_passes); 614 Opts.DisableLifetimeMarkers = Args.hasArg(OPT_disable_lifetimemarkers); 615 Opts.DisableO0ImplyOptNone = Args.hasArg(OPT_disable_O0_optnone); 616 Opts.DisableRedZone = Args.hasArg(OPT_disable_red_zone); 617 Opts.ForbidGuardVariables = Args.hasArg(OPT_fforbid_guard_variables); 618 Opts.UseRegisterSizedBitfieldAccess = Args.hasArg( 619 OPT_fuse_register_sized_bitfield_access); 620 Opts.RelaxedAliasing = Args.hasArg(OPT_relaxed_aliasing); 621 Opts.StructPathTBAA = !Args.hasArg(OPT_no_struct_path_tbaa); 622 Opts.NewStructPathTBAA = !Args.hasArg(OPT_no_struct_path_tbaa) && 623 Args.hasArg(OPT_new_struct_path_tbaa); 624 Opts.FineGrainedBitfieldAccesses = 625 Args.hasFlag(OPT_ffine_grained_bitfield_accesses, 626 OPT_fno_fine_grained_bitfield_accesses, false); 627 Opts.DwarfDebugFlags = Args.getLastArgValue(OPT_dwarf_debug_flags); 628 Opts.MergeAllConstants = Args.hasArg(OPT_fmerge_all_constants); 629 Opts.NoCommon = Args.hasArg(OPT_fno_common); 630 Opts.NoImplicitFloat = Args.hasArg(OPT_no_implicit_float); 631 Opts.OptimizeSize = getOptimizationLevelSize(Args); 632 Opts.SimplifyLibCalls = !(Args.hasArg(OPT_fno_builtin) || 633 Args.hasArg(OPT_ffreestanding)); 634 if (Opts.SimplifyLibCalls) 635 getAllNoBuiltinFuncValues(Args, Opts.NoBuiltinFuncs); 636 Opts.UnrollLoops = 637 Args.hasFlag(OPT_funroll_loops, OPT_fno_unroll_loops, 638 (Opts.OptimizationLevel > 1)); 639 Opts.RerollLoops = Args.hasArg(OPT_freroll_loops); 640 641 Opts.DisableIntegratedAS = Args.hasArg(OPT_fno_integrated_as); 642 Opts.Autolink = !Args.hasArg(OPT_fno_autolink); 643 Opts.SampleProfileFile = Args.getLastArgValue(OPT_fprofile_sample_use_EQ); 644 Opts.DebugInfoForProfiling = Args.hasFlag( 645 OPT_fdebug_info_for_profiling, OPT_fno_debug_info_for_profiling, false); 646 Opts.GnuPubnames = Args.hasArg(OPT_ggnu_pubnames); 647 648 setPGOInstrumentor(Opts, Args, Diags); 649 Opts.InstrProfileOutput = 650 Args.getLastArgValue(OPT_fprofile_instrument_path_EQ); 651 Opts.ProfileInstrumentUsePath = 652 Args.getLastArgValue(OPT_fprofile_instrument_use_path_EQ); 653 if (!Opts.ProfileInstrumentUsePath.empty()) 654 setPGOUseInstrumentor(Opts, Opts.ProfileInstrumentUsePath); 655 656 Opts.CoverageMapping = 657 Args.hasFlag(OPT_fcoverage_mapping, OPT_fno_coverage_mapping, false); 658 Opts.DumpCoverageMapping = Args.hasArg(OPT_dump_coverage_mapping); 659 Opts.AsmVerbose = Args.hasArg(OPT_masm_verbose); 660 Opts.PreserveAsmComments = !Args.hasArg(OPT_fno_preserve_as_comments); 661 Opts.AssumeSaneOperatorNew = !Args.hasArg(OPT_fno_assume_sane_operator_new); 662 Opts.ObjCAutoRefCountExceptions = Args.hasArg(OPT_fobjc_arc_exceptions); 663 Opts.CXAAtExit = !Args.hasArg(OPT_fno_use_cxa_atexit); 664 Opts.RegisterGlobalDtorsWithAtExit = 665 Args.hasArg(OPT_fregister_global_dtors_with_atexit); 666 Opts.CXXCtorDtorAliases = Args.hasArg(OPT_mconstructor_aliases); 667 Opts.CodeModel = getCodeModel(Args, Diags); 668 Opts.DebugPass = Args.getLastArgValue(OPT_mdebug_pass); 669 Opts.DisableFPElim = 670 (Args.hasArg(OPT_mdisable_fp_elim) || Args.hasArg(OPT_pg)); 671 Opts.DisableFree = Args.hasArg(OPT_disable_free); 672 Opts.DiscardValueNames = Args.hasArg(OPT_discard_value_names); 673 Opts.DisableTailCalls = Args.hasArg(OPT_mdisable_tail_calls); 674 Opts.NoEscapingBlockTailCalls = 675 Args.hasArg(OPT_fno_escaping_block_tail_calls); 676 Opts.FloatABI = Args.getLastArgValue(OPT_mfloat_abi); 677 Opts.LessPreciseFPMAD = Args.hasArg(OPT_cl_mad_enable) || 678 Args.hasArg(OPT_cl_unsafe_math_optimizations) || 679 Args.hasArg(OPT_cl_fast_relaxed_math); 680 Opts.LimitFloatPrecision = Args.getLastArgValue(OPT_mlimit_float_precision); 681 Opts.NoInfsFPMath = (Args.hasArg(OPT_menable_no_infinities) || 682 Args.hasArg(OPT_cl_finite_math_only) || 683 Args.hasArg(OPT_cl_fast_relaxed_math)); 684 Opts.NoNaNsFPMath = (Args.hasArg(OPT_menable_no_nans) || 685 Args.hasArg(OPT_cl_unsafe_math_optimizations) || 686 Args.hasArg(OPT_cl_finite_math_only) || 687 Args.hasArg(OPT_cl_fast_relaxed_math)); 688 Opts.NoSignedZeros = (Args.hasArg(OPT_fno_signed_zeros) || 689 Args.hasArg(OPT_cl_no_signed_zeros) || 690 Args.hasArg(OPT_cl_unsafe_math_optimizations) || 691 Args.hasArg(OPT_cl_fast_relaxed_math)); 692 Opts.Reassociate = Args.hasArg(OPT_mreassociate); 693 Opts.FlushDenorm = Args.hasArg(OPT_cl_denorms_are_zero); 694 Opts.CorrectlyRoundedDivSqrt = 695 Args.hasArg(OPT_cl_fp32_correctly_rounded_divide_sqrt); 696 Opts.UniformWGSize = 697 Args.hasArg(OPT_cl_uniform_work_group_size); 698 Opts.Reciprocals = Args.getAllArgValues(OPT_mrecip_EQ); 699 Opts.ReciprocalMath = Args.hasArg(OPT_freciprocal_math); 700 Opts.NoTrappingMath = Args.hasArg(OPT_fno_trapping_math); 701 Opts.StrictFloatCastOverflow = 702 !Args.hasArg(OPT_fno_strict_float_cast_overflow); 703 704 Opts.NoZeroInitializedInBSS = Args.hasArg(OPT_mno_zero_initialized_in_bss); 705 Opts.NumRegisterParameters = getLastArgIntValue(Args, OPT_mregparm, 0, Diags); 706 Opts.NoExecStack = Args.hasArg(OPT_mno_exec_stack); 707 Opts.FatalWarnings = Args.hasArg(OPT_massembler_fatal_warnings); 708 Opts.EnableSegmentedStacks = Args.hasArg(OPT_split_stacks); 709 Opts.RelaxAll = Args.hasArg(OPT_mrelax_all); 710 Opts.IncrementalLinkerCompatible = 711 Args.hasArg(OPT_mincremental_linker_compatible); 712 Opts.PIECopyRelocations = 713 Args.hasArg(OPT_mpie_copy_relocations); 714 Opts.NoPLT = Args.hasArg(OPT_fno_plt); 715 Opts.OmitLeafFramePointer = Args.hasArg(OPT_momit_leaf_frame_pointer); 716 Opts.SaveTempLabels = Args.hasArg(OPT_msave_temp_labels); 717 Opts.NoDwarfDirectoryAsm = Args.hasArg(OPT_fno_dwarf_directory_asm); 718 Opts.SoftFloat = Args.hasArg(OPT_msoft_float); 719 Opts.StrictEnums = Args.hasArg(OPT_fstrict_enums); 720 Opts.StrictReturn = !Args.hasArg(OPT_fno_strict_return); 721 Opts.StrictVTablePointers = Args.hasArg(OPT_fstrict_vtable_pointers); 722 Opts.ForceEmitVTables = Args.hasArg(OPT_fforce_emit_vtables); 723 Opts.UnsafeFPMath = Args.hasArg(OPT_menable_unsafe_fp_math) || 724 Args.hasArg(OPT_cl_unsafe_math_optimizations) || 725 Args.hasArg(OPT_cl_fast_relaxed_math); 726 Opts.UnwindTables = Args.hasArg(OPT_munwind_tables); 727 Opts.RelocationModel = getRelocModel(Args, Diags); 728 Opts.ThreadModel = Args.getLastArgValue(OPT_mthread_model, "posix"); 729 if (Opts.ThreadModel != "posix" && Opts.ThreadModel != "single") 730 Diags.Report(diag::err_drv_invalid_value) 731 << Args.getLastArg(OPT_mthread_model)->getAsString(Args) 732 << Opts.ThreadModel; 733 Opts.TrapFuncName = Args.getLastArgValue(OPT_ftrap_function_EQ); 734 Opts.UseInitArray = Args.hasArg(OPT_fuse_init_array); 735 736 Opts.FunctionSections = Args.hasFlag(OPT_ffunction_sections, 737 OPT_fno_function_sections, false); 738 Opts.DataSections = Args.hasFlag(OPT_fdata_sections, 739 OPT_fno_data_sections, false); 740 Opts.StackSizeSection = 741 Args.hasFlag(OPT_fstack_size_section, OPT_fno_stack_size_section, false); 742 Opts.UniqueSectionNames = Args.hasFlag(OPT_funique_section_names, 743 OPT_fno_unique_section_names, true); 744 745 Opts.MergeFunctions = Args.hasArg(OPT_fmerge_functions); 746 747 Opts.NoUseJumpTables = Args.hasArg(OPT_fno_jump_tables); 748 749 Opts.NullPointerIsValid = Args.hasArg(OPT_fno_delete_null_pointer_checks); 750 751 Opts.ProfileSampleAccurate = Args.hasArg(OPT_fprofile_sample_accurate); 752 753 Opts.PrepareForLTO = Args.hasArg(OPT_flto, OPT_flto_EQ); 754 Opts.PrepareForThinLTO = false; 755 if (Arg *A = Args.getLastArg(OPT_flto_EQ)) { 756 StringRef S = A->getValue(); 757 if (S == "thin") 758 Opts.PrepareForThinLTO = true; 759 else if (S != "full") 760 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << S; 761 } 762 Opts.LTOUnit = Args.hasFlag(OPT_flto_unit, OPT_fno_lto_unit, false); 763 if (Arg *A = Args.getLastArg(OPT_fthinlto_index_EQ)) { 764 if (IK.getLanguage() != InputKind::LLVM_IR) 765 Diags.Report(diag::err_drv_argument_only_allowed_with) 766 << A->getAsString(Args) << "-x ir"; 767 Opts.ThinLTOIndexFile = Args.getLastArgValue(OPT_fthinlto_index_EQ); 768 } 769 if (Arg *A = Args.getLastArg(OPT_save_temps_EQ)) 770 Opts.SaveTempsFilePrefix = 771 llvm::StringSwitch<std::string>(A->getValue()) 772 .Case("obj", FrontendOpts.OutputFile) 773 .Default(llvm::sys::path::filename(FrontendOpts.OutputFile).str()); 774 775 Opts.ThinLinkBitcodeFile = Args.getLastArgValue(OPT_fthin_link_bitcode_EQ); 776 777 Opts.MSVolatile = Args.hasArg(OPT_fms_volatile); 778 779 Opts.VectorizeLoop = Args.hasArg(OPT_vectorize_loops); 780 Opts.VectorizeSLP = Args.hasArg(OPT_vectorize_slp); 781 782 Opts.PreferVectorWidth = Args.getLastArgValue(OPT_mprefer_vector_width_EQ); 783 784 Opts.MainFileName = Args.getLastArgValue(OPT_main_file_name); 785 Opts.VerifyModule = !Args.hasArg(OPT_disable_llvm_verifier); 786 787 Opts.ControlFlowGuard = Args.hasArg(OPT_cfguard); 788 789 Opts.DisableGCov = Args.hasArg(OPT_test_coverage); 790 Opts.EmitGcovArcs = Args.hasArg(OPT_femit_coverage_data); 791 Opts.EmitGcovNotes = Args.hasArg(OPT_femit_coverage_notes); 792 if (Opts.EmitGcovArcs || Opts.EmitGcovNotes) { 793 Opts.CoverageDataFile = Args.getLastArgValue(OPT_coverage_data_file); 794 Opts.CoverageNotesFile = Args.getLastArgValue(OPT_coverage_notes_file); 795 Opts.CoverageExtraChecksum = Args.hasArg(OPT_coverage_cfg_checksum); 796 Opts.CoverageNoFunctionNamesInData = 797 Args.hasArg(OPT_coverage_no_function_names_in_data); 798 Opts.CoverageExitBlockBeforeBody = 799 Args.hasArg(OPT_coverage_exit_block_before_body); 800 if (Args.hasArg(OPT_coverage_version_EQ)) { 801 StringRef CoverageVersion = Args.getLastArgValue(OPT_coverage_version_EQ); 802 if (CoverageVersion.size() != 4) { 803 Diags.Report(diag::err_drv_invalid_value) 804 << Args.getLastArg(OPT_coverage_version_EQ)->getAsString(Args) 805 << CoverageVersion; 806 } else { 807 memcpy(Opts.CoverageVersion, CoverageVersion.data(), 4); 808 } 809 } 810 } 811 // Handle -fembed-bitcode option. 812 if (Arg *A = Args.getLastArg(OPT_fembed_bitcode_EQ)) { 813 StringRef Name = A->getValue(); 814 unsigned Model = llvm::StringSwitch<unsigned>(Name) 815 .Case("off", CodeGenOptions::Embed_Off) 816 .Case("all", CodeGenOptions::Embed_All) 817 .Case("bitcode", CodeGenOptions::Embed_Bitcode) 818 .Case("marker", CodeGenOptions::Embed_Marker) 819 .Default(~0U); 820 if (Model == ~0U) { 821 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Name; 822 Success = false; 823 } else 824 Opts.setEmbedBitcode( 825 static_cast<CodeGenOptions::EmbedBitcodeKind>(Model)); 826 } 827 // FIXME: For backend options that are not yet recorded as function 828 // attributes in the IR, keep track of them so we can embed them in a 829 // separate data section and use them when building the bitcode. 830 if (Opts.getEmbedBitcode() == CodeGenOptions::Embed_All) { 831 for (const auto &A : Args) { 832 // Do not encode output and input. 833 if (A->getOption().getID() == options::OPT_o || 834 A->getOption().getID() == options::OPT_INPUT || 835 A->getOption().getID() == options::OPT_x || 836 A->getOption().getID() == options::OPT_fembed_bitcode || 837 (A->getOption().getGroup().isValid() && 838 A->getOption().getGroup().getID() == options::OPT_W_Group)) 839 continue; 840 ArgStringList ASL; 841 A->render(Args, ASL); 842 for (const auto &arg : ASL) { 843 StringRef ArgStr(arg); 844 Opts.CmdArgs.insert(Opts.CmdArgs.end(), ArgStr.begin(), ArgStr.end()); 845 // using \00 to seperate each commandline options. 846 Opts.CmdArgs.push_back('\0'); 847 } 848 } 849 } 850 851 Opts.PreserveVec3Type = Args.hasArg(OPT_fpreserve_vec3_type); 852 Opts.InstrumentFunctions = Args.hasArg(OPT_finstrument_functions); 853 Opts.InstrumentFunctionsAfterInlining = 854 Args.hasArg(OPT_finstrument_functions_after_inlining); 855 Opts.InstrumentFunctionEntryBare = 856 Args.hasArg(OPT_finstrument_function_entry_bare); 857 858 Opts.XRayInstrumentFunctions = 859 Args.hasArg(OPT_fxray_instrument); 860 Opts.XRayAlwaysEmitCustomEvents = 861 Args.hasArg(OPT_fxray_always_emit_customevents); 862 Opts.XRayAlwaysEmitTypedEvents = 863 Args.hasArg(OPT_fxray_always_emit_typedevents); 864 Opts.XRayInstructionThreshold = 865 getLastArgIntValue(Args, OPT_fxray_instruction_threshold_EQ, 200, Diags); 866 867 auto XRayInstrBundles = 868 Args.getAllArgValues(OPT_fxray_instrumentation_bundle); 869 if (XRayInstrBundles.empty()) 870 Opts.XRayInstrumentationBundle.Mask = XRayInstrKind::All; 871 else 872 for (const auto &A : XRayInstrBundles) 873 parseXRayInstrumentationBundle("-fxray-instrumentation-bundle=", A, Args, 874 Diags, Opts.XRayInstrumentationBundle); 875 876 Opts.InstrumentForProfiling = Args.hasArg(OPT_pg); 877 Opts.CallFEntry = Args.hasArg(OPT_mfentry); 878 Opts.EmitOpenCLArgMetadata = Args.hasArg(OPT_cl_kernel_arg_info); 879 880 if (const Arg *A = Args.getLastArg(OPT_fcf_protection_EQ)) { 881 StringRef Name = A->getValue(); 882 if (Name == "full") { 883 Opts.CFProtectionReturn = 1; 884 Opts.CFProtectionBranch = 1; 885 } else if (Name == "return") 886 Opts.CFProtectionReturn = 1; 887 else if (Name == "branch") 888 Opts.CFProtectionBranch = 1; 889 else if (Name != "none") { 890 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Name; 891 Success = false; 892 } 893 } 894 895 if (const Arg *A = Args.getLastArg(OPT_compress_debug_sections, 896 OPT_compress_debug_sections_EQ)) { 897 if (A->getOption().getID() == OPT_compress_debug_sections) { 898 // TODO: be more clever about the compression type auto-detection 899 Opts.setCompressDebugSections(llvm::DebugCompressionType::GNU); 900 } else { 901 auto DCT = llvm::StringSwitch<llvm::DebugCompressionType>(A->getValue()) 902 .Case("none", llvm::DebugCompressionType::None) 903 .Case("zlib", llvm::DebugCompressionType::Z) 904 .Case("zlib-gnu", llvm::DebugCompressionType::GNU) 905 .Default(llvm::DebugCompressionType::None); 906 Opts.setCompressDebugSections(DCT); 907 } 908 } 909 910 Opts.RelaxELFRelocations = Args.hasArg(OPT_mrelax_relocations); 911 Opts.DebugCompilationDir = Args.getLastArgValue(OPT_fdebug_compilation_dir); 912 for (auto *A : 913 Args.filtered(OPT_mlink_bitcode_file, OPT_mlink_cuda_bitcode)) { 914 CodeGenOptions::BitcodeFileToLink F; 915 F.Filename = A->getValue(); 916 if (A->getOption().matches(OPT_mlink_cuda_bitcode)) { 917 F.LinkFlags = llvm::Linker::Flags::LinkOnlyNeeded; 918 // When linking CUDA bitcode, propagate function attributes so that 919 // e.g. libdevice gets fast-math attrs if we're building with fast-math. 920 F.PropagateAttrs = true; 921 F.Internalize = true; 922 } 923 Opts.LinkBitcodeFiles.push_back(F); 924 } 925 Opts.SanitizeCoverageType = 926 getLastArgIntValue(Args, OPT_fsanitize_coverage_type, 0, Diags); 927 Opts.SanitizeCoverageIndirectCalls = 928 Args.hasArg(OPT_fsanitize_coverage_indirect_calls); 929 Opts.SanitizeCoverageTraceBB = Args.hasArg(OPT_fsanitize_coverage_trace_bb); 930 Opts.SanitizeCoverageTraceCmp = Args.hasArg(OPT_fsanitize_coverage_trace_cmp); 931 Opts.SanitizeCoverageTraceDiv = Args.hasArg(OPT_fsanitize_coverage_trace_div); 932 Opts.SanitizeCoverageTraceGep = Args.hasArg(OPT_fsanitize_coverage_trace_gep); 933 Opts.SanitizeCoverage8bitCounters = 934 Args.hasArg(OPT_fsanitize_coverage_8bit_counters); 935 Opts.SanitizeCoverageTracePC = Args.hasArg(OPT_fsanitize_coverage_trace_pc); 936 Opts.SanitizeCoverageTracePCGuard = 937 Args.hasArg(OPT_fsanitize_coverage_trace_pc_guard); 938 Opts.SanitizeCoverageNoPrune = Args.hasArg(OPT_fsanitize_coverage_no_prune); 939 Opts.SanitizeCoverageInline8bitCounters = 940 Args.hasArg(OPT_fsanitize_coverage_inline_8bit_counters); 941 Opts.SanitizeCoveragePCTable = Args.hasArg(OPT_fsanitize_coverage_pc_table); 942 Opts.SanitizeCoverageStackDepth = 943 Args.hasArg(OPT_fsanitize_coverage_stack_depth); 944 Opts.SanitizeMemoryTrackOrigins = 945 getLastArgIntValue(Args, OPT_fsanitize_memory_track_origins_EQ, 0, Diags); 946 Opts.SanitizeMemoryUseAfterDtor = 947 Args.hasFlag(OPT_fsanitize_memory_use_after_dtor, 948 OPT_fno_sanitize_memory_use_after_dtor, 949 false); 950 Opts.SanitizeMinimalRuntime = Args.hasArg(OPT_fsanitize_minimal_runtime); 951 Opts.SanitizeCfiCrossDso = Args.hasArg(OPT_fsanitize_cfi_cross_dso); 952 Opts.SanitizeCfiICallGeneralizePointers = 953 Args.hasArg(OPT_fsanitize_cfi_icall_generalize_pointers); 954 Opts.SanitizeStats = Args.hasArg(OPT_fsanitize_stats); 955 if (Arg *A = Args.getLastArg( 956 OPT_fsanitize_address_poison_class_member_array_new_cookie, 957 OPT_fno_sanitize_address_poison_class_member_array_new_cookie)) { 958 Opts.SanitizeAddressPoisonClassMemberArrayNewCookie = 959 A->getOption().getID() == 960 OPT_fsanitize_address_poison_class_member_array_new_cookie; 961 } 962 if (Arg *A = Args.getLastArg(OPT_fsanitize_address_use_after_scope, 963 OPT_fno_sanitize_address_use_after_scope)) { 964 Opts.SanitizeAddressUseAfterScope = 965 A->getOption().getID() == OPT_fsanitize_address_use_after_scope; 966 } 967 Opts.SanitizeAddressGlobalsDeadStripping = 968 Args.hasArg(OPT_fsanitize_address_globals_dead_stripping); 969 Opts.SSPBufferSize = 970 getLastArgIntValue(Args, OPT_stack_protector_buffer_size, 8, Diags); 971 Opts.StackRealignment = Args.hasArg(OPT_mstackrealign); 972 if (Arg *A = Args.getLastArg(OPT_mstack_alignment)) { 973 StringRef Val = A->getValue(); 974 unsigned StackAlignment = Opts.StackAlignment; 975 Val.getAsInteger(10, StackAlignment); 976 Opts.StackAlignment = StackAlignment; 977 } 978 979 if (Arg *A = Args.getLastArg(OPT_mstack_probe_size)) { 980 StringRef Val = A->getValue(); 981 unsigned StackProbeSize = Opts.StackProbeSize; 982 Val.getAsInteger(0, StackProbeSize); 983 Opts.StackProbeSize = StackProbeSize; 984 } 985 986 Opts.NoStackArgProbe = Args.hasArg(OPT_mno_stack_arg_probe); 987 988 if (Arg *A = Args.getLastArg(OPT_fobjc_dispatch_method_EQ)) { 989 StringRef Name = A->getValue(); 990 unsigned Method = llvm::StringSwitch<unsigned>(Name) 991 .Case("legacy", CodeGenOptions::Legacy) 992 .Case("non-legacy", CodeGenOptions::NonLegacy) 993 .Case("mixed", CodeGenOptions::Mixed) 994 .Default(~0U); 995 if (Method == ~0U) { 996 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Name; 997 Success = false; 998 } else { 999 Opts.setObjCDispatchMethod( 1000 static_cast<CodeGenOptions::ObjCDispatchMethodKind>(Method)); 1001 } 1002 } 1003 1004 if (Args.getLastArg(OPT_femulated_tls) || 1005 Args.getLastArg(OPT_fno_emulated_tls)) { 1006 Opts.ExplicitEmulatedTLS = true; 1007 Opts.EmulatedTLS = 1008 Args.hasFlag(OPT_femulated_tls, OPT_fno_emulated_tls, false); 1009 } 1010 1011 if (Arg *A = Args.getLastArg(OPT_ftlsmodel_EQ)) { 1012 StringRef Name = A->getValue(); 1013 unsigned Model = llvm::StringSwitch<unsigned>(Name) 1014 .Case("global-dynamic", CodeGenOptions::GeneralDynamicTLSModel) 1015 .Case("local-dynamic", CodeGenOptions::LocalDynamicTLSModel) 1016 .Case("initial-exec", CodeGenOptions::InitialExecTLSModel) 1017 .Case("local-exec", CodeGenOptions::LocalExecTLSModel) 1018 .Default(~0U); 1019 if (Model == ~0U) { 1020 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Name; 1021 Success = false; 1022 } else { 1023 Opts.setDefaultTLSModel(static_cast<CodeGenOptions::TLSModel>(Model)); 1024 } 1025 } 1026 1027 if (Arg *A = Args.getLastArg(OPT_fdenormal_fp_math_EQ)) { 1028 StringRef Val = A->getValue(); 1029 if (Val == "ieee") 1030 Opts.FPDenormalMode = "ieee"; 1031 else if (Val == "preserve-sign") 1032 Opts.FPDenormalMode = "preserve-sign"; 1033 else if (Val == "positive-zero") 1034 Opts.FPDenormalMode = "positive-zero"; 1035 else 1036 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Val; 1037 } 1038 1039 if (Arg *A = Args.getLastArg(OPT_fpcc_struct_return, OPT_freg_struct_return)) { 1040 if (A->getOption().matches(OPT_fpcc_struct_return)) { 1041 Opts.setStructReturnConvention(CodeGenOptions::SRCK_OnStack); 1042 } else { 1043 assert(A->getOption().matches(OPT_freg_struct_return)); 1044 Opts.setStructReturnConvention(CodeGenOptions::SRCK_InRegs); 1045 } 1046 } 1047 1048 Opts.DependentLibraries = Args.getAllArgValues(OPT_dependent_lib); 1049 Opts.LinkerOptions = Args.getAllArgValues(OPT_linker_option); 1050 bool NeedLocTracking = false; 1051 1052 Opts.OptRecordFile = Args.getLastArgValue(OPT_opt_record_file); 1053 if (!Opts.OptRecordFile.empty()) 1054 NeedLocTracking = true; 1055 1056 if (Arg *A = Args.getLastArg(OPT_Rpass_EQ)) { 1057 Opts.OptimizationRemarkPattern = 1058 GenerateOptimizationRemarkRegex(Diags, Args, A); 1059 NeedLocTracking = true; 1060 } 1061 1062 if (Arg *A = Args.getLastArg(OPT_Rpass_missed_EQ)) { 1063 Opts.OptimizationRemarkMissedPattern = 1064 GenerateOptimizationRemarkRegex(Diags, Args, A); 1065 NeedLocTracking = true; 1066 } 1067 1068 if (Arg *A = Args.getLastArg(OPT_Rpass_analysis_EQ)) { 1069 Opts.OptimizationRemarkAnalysisPattern = 1070 GenerateOptimizationRemarkRegex(Diags, Args, A); 1071 NeedLocTracking = true; 1072 } 1073 1074 Opts.DiagnosticsWithHotness = 1075 Args.hasArg(options::OPT_fdiagnostics_show_hotness); 1076 bool UsingSampleProfile = !Opts.SampleProfileFile.empty(); 1077 bool UsingProfile = UsingSampleProfile || 1078 (Opts.getProfileUse() != CodeGenOptions::ProfileNone); 1079 1080 if (Opts.DiagnosticsWithHotness && !UsingProfile && 1081 // An IR file will contain PGO as metadata 1082 IK.getLanguage() != InputKind::LLVM_IR) 1083 Diags.Report(diag::warn_drv_diagnostics_hotness_requires_pgo) 1084 << "-fdiagnostics-show-hotness"; 1085 1086 Opts.DiagnosticsHotnessThreshold = getLastArgUInt64Value( 1087 Args, options::OPT_fdiagnostics_hotness_threshold_EQ, 0); 1088 if (Opts.DiagnosticsHotnessThreshold > 0 && !UsingProfile) 1089 Diags.Report(diag::warn_drv_diagnostics_hotness_requires_pgo) 1090 << "-fdiagnostics-hotness-threshold="; 1091 1092 // If the user requested to use a sample profile for PGO, then the 1093 // backend will need to track source location information so the profile 1094 // can be incorporated into the IR. 1095 if (UsingSampleProfile) 1096 NeedLocTracking = true; 1097 1098 // If the user requested a flag that requires source locations available in 1099 // the backend, make sure that the backend tracks source location information. 1100 if (NeedLocTracking && Opts.getDebugInfo() == codegenoptions::NoDebugInfo) 1101 Opts.setDebugInfo(codegenoptions::LocTrackingOnly); 1102 1103 Opts.RewriteMapFiles = Args.getAllArgValues(OPT_frewrite_map_file); 1104 1105 // Parse -fsanitize-recover= arguments. 1106 // FIXME: Report unrecoverable sanitizers incorrectly specified here. 1107 parseSanitizerKinds("-fsanitize-recover=", 1108 Args.getAllArgValues(OPT_fsanitize_recover_EQ), Diags, 1109 Opts.SanitizeRecover); 1110 parseSanitizerKinds("-fsanitize-trap=", 1111 Args.getAllArgValues(OPT_fsanitize_trap_EQ), Diags, 1112 Opts.SanitizeTrap); 1113 1114 Opts.CudaGpuBinaryFileName = 1115 Args.getLastArgValue(OPT_fcuda_include_gpubinary); 1116 1117 Opts.Backchain = Args.hasArg(OPT_mbackchain); 1118 1119 Opts.EmitCheckPathComponentsToStrip = getLastArgIntValue( 1120 Args, OPT_fsanitize_undefined_strip_path_components_EQ, 0, Diags); 1121 1122 Opts.EmitVersionIdentMetadata = Args.hasFlag(OPT_Qy, OPT_Qn, true); 1123 1124 Opts.Addrsig = Args.hasArg(OPT_faddrsig); 1125 1126 return Success; 1127 } 1128 1129 static void ParseDependencyOutputArgs(DependencyOutputOptions &Opts, 1130 ArgList &Args) { 1131 Opts.OutputFile = Args.getLastArgValue(OPT_dependency_file); 1132 Opts.Targets = Args.getAllArgValues(OPT_MT); 1133 Opts.IncludeSystemHeaders = Args.hasArg(OPT_sys_header_deps); 1134 Opts.IncludeModuleFiles = Args.hasArg(OPT_module_file_deps); 1135 Opts.UsePhonyTargets = Args.hasArg(OPT_MP); 1136 Opts.ShowHeaderIncludes = Args.hasArg(OPT_H); 1137 Opts.HeaderIncludeOutputFile = Args.getLastArgValue(OPT_header_include_file); 1138 Opts.AddMissingHeaderDeps = Args.hasArg(OPT_MG); 1139 if (Args.hasArg(OPT_show_includes)) { 1140 // Writing both /showIncludes and preprocessor output to stdout 1141 // would produce interleaved output, so use stderr for /showIncludes. 1142 // This behaves the same as cl.exe, when /E, /EP or /P are passed. 1143 if (Args.hasArg(options::OPT_E) || Args.hasArg(options::OPT_P)) 1144 Opts.ShowIncludesDest = ShowIncludesDestination::Stderr; 1145 else 1146 Opts.ShowIncludesDest = ShowIncludesDestination::Stdout; 1147 } else { 1148 Opts.ShowIncludesDest = ShowIncludesDestination::None; 1149 } 1150 Opts.DOTOutputFile = Args.getLastArgValue(OPT_dependency_dot); 1151 Opts.ModuleDependencyOutputDir = 1152 Args.getLastArgValue(OPT_module_dependency_dir); 1153 if (Args.hasArg(OPT_MV)) 1154 Opts.OutputFormat = DependencyOutputFormat::NMake; 1155 // Add sanitizer blacklists as extra dependencies. 1156 // They won't be discovered by the regular preprocessor, so 1157 // we let make / ninja to know about this implicit dependency. 1158 Opts.ExtraDeps = Args.getAllArgValues(OPT_fdepfile_entry); 1159 // Only the -fmodule-file=<file> form. 1160 for (const auto *A : Args.filtered(OPT_fmodule_file)) { 1161 StringRef Val = A->getValue(); 1162 if (Val.find('=') == StringRef::npos) 1163 Opts.ExtraDeps.push_back(Val); 1164 } 1165 } 1166 1167 static bool parseShowColorsArgs(const ArgList &Args, bool DefaultColor) { 1168 // Color diagnostics default to auto ("on" if terminal supports) in the driver 1169 // but default to off in cc1, needing an explicit OPT_fdiagnostics_color. 1170 // Support both clang's -f[no-]color-diagnostics and gcc's 1171 // -f[no-]diagnostics-colors[=never|always|auto]. 1172 enum { 1173 Colors_On, 1174 Colors_Off, 1175 Colors_Auto 1176 } ShowColors = DefaultColor ? Colors_Auto : Colors_Off; 1177 for (auto *A : Args) { 1178 const Option &O = A->getOption(); 1179 if (O.matches(options::OPT_fcolor_diagnostics) || 1180 O.matches(options::OPT_fdiagnostics_color)) { 1181 ShowColors = Colors_On; 1182 } else if (O.matches(options::OPT_fno_color_diagnostics) || 1183 O.matches(options::OPT_fno_diagnostics_color)) { 1184 ShowColors = Colors_Off; 1185 } else if (O.matches(options::OPT_fdiagnostics_color_EQ)) { 1186 StringRef Value(A->getValue()); 1187 if (Value == "always") 1188 ShowColors = Colors_On; 1189 else if (Value == "never") 1190 ShowColors = Colors_Off; 1191 else if (Value == "auto") 1192 ShowColors = Colors_Auto; 1193 } 1194 } 1195 return ShowColors == Colors_On || 1196 (ShowColors == Colors_Auto && 1197 llvm::sys::Process::StandardErrHasColors()); 1198 } 1199 1200 static bool checkVerifyPrefixes(const std::vector<std::string> &VerifyPrefixes, 1201 DiagnosticsEngine *Diags) { 1202 bool Success = true; 1203 for (const auto &Prefix : VerifyPrefixes) { 1204 // Every prefix must start with a letter and contain only alphanumeric 1205 // characters, hyphens, and underscores. 1206 auto BadChar = std::find_if(Prefix.begin(), Prefix.end(), 1207 [](char C){return !isAlphanumeric(C) 1208 && C != '-' && C != '_';}); 1209 if (BadChar != Prefix.end() || !isLetter(Prefix[0])) { 1210 Success = false; 1211 if (Diags) { 1212 Diags->Report(diag::err_drv_invalid_value) << "-verify=" << Prefix; 1213 Diags->Report(diag::note_drv_verify_prefix_spelling); 1214 } 1215 } 1216 } 1217 return Success; 1218 } 1219 1220 bool clang::ParseDiagnosticArgs(DiagnosticOptions &Opts, ArgList &Args, 1221 DiagnosticsEngine *Diags, 1222 bool DefaultDiagColor, bool DefaultShowOpt) { 1223 bool Success = true; 1224 1225 Opts.DiagnosticLogFile = Args.getLastArgValue(OPT_diagnostic_log_file); 1226 if (Arg *A = 1227 Args.getLastArg(OPT_diagnostic_serialized_file, OPT__serialize_diags)) 1228 Opts.DiagnosticSerializationFile = A->getValue(); 1229 Opts.IgnoreWarnings = Args.hasArg(OPT_w); 1230 Opts.NoRewriteMacros = Args.hasArg(OPT_Wno_rewrite_macros); 1231 Opts.Pedantic = Args.hasArg(OPT_pedantic); 1232 Opts.PedanticErrors = Args.hasArg(OPT_pedantic_errors); 1233 Opts.ShowCarets = !Args.hasArg(OPT_fno_caret_diagnostics); 1234 Opts.ShowColors = parseShowColorsArgs(Args, DefaultDiagColor); 1235 Opts.ShowColumn = Args.hasFlag(OPT_fshow_column, 1236 OPT_fno_show_column, 1237 /*Default=*/true); 1238 Opts.ShowFixits = !Args.hasArg(OPT_fno_diagnostics_fixit_info); 1239 Opts.ShowLocation = !Args.hasArg(OPT_fno_show_source_location); 1240 Opts.AbsolutePath = Args.hasArg(OPT_fdiagnostics_absolute_paths); 1241 Opts.ShowOptionNames = 1242 Args.hasFlag(OPT_fdiagnostics_show_option, 1243 OPT_fno_diagnostics_show_option, DefaultShowOpt); 1244 1245 llvm::sys::Process::UseANSIEscapeCodes(Args.hasArg(OPT_fansi_escape_codes)); 1246 1247 // Default behavior is to not to show note include stacks. 1248 Opts.ShowNoteIncludeStack = false; 1249 if (Arg *A = Args.getLastArg(OPT_fdiagnostics_show_note_include_stack, 1250 OPT_fno_diagnostics_show_note_include_stack)) 1251 if (A->getOption().matches(OPT_fdiagnostics_show_note_include_stack)) 1252 Opts.ShowNoteIncludeStack = true; 1253 1254 StringRef ShowOverloads = 1255 Args.getLastArgValue(OPT_fshow_overloads_EQ, "all"); 1256 if (ShowOverloads == "best") 1257 Opts.setShowOverloads(Ovl_Best); 1258 else if (ShowOverloads == "all") 1259 Opts.setShowOverloads(Ovl_All); 1260 else { 1261 Success = false; 1262 if (Diags) 1263 Diags->Report(diag::err_drv_invalid_value) 1264 << Args.getLastArg(OPT_fshow_overloads_EQ)->getAsString(Args) 1265 << ShowOverloads; 1266 } 1267 1268 StringRef ShowCategory = 1269 Args.getLastArgValue(OPT_fdiagnostics_show_category, "none"); 1270 if (ShowCategory == "none") 1271 Opts.ShowCategories = 0; 1272 else if (ShowCategory == "id") 1273 Opts.ShowCategories = 1; 1274 else if (ShowCategory == "name") 1275 Opts.ShowCategories = 2; 1276 else { 1277 Success = false; 1278 if (Diags) 1279 Diags->Report(diag::err_drv_invalid_value) 1280 << Args.getLastArg(OPT_fdiagnostics_show_category)->getAsString(Args) 1281 << ShowCategory; 1282 } 1283 1284 StringRef Format = 1285 Args.getLastArgValue(OPT_fdiagnostics_format, "clang"); 1286 if (Format == "clang") 1287 Opts.setFormat(DiagnosticOptions::Clang); 1288 else if (Format == "msvc") 1289 Opts.setFormat(DiagnosticOptions::MSVC); 1290 else if (Format == "msvc-fallback") { 1291 Opts.setFormat(DiagnosticOptions::MSVC); 1292 Opts.CLFallbackMode = true; 1293 } else if (Format == "vi") 1294 Opts.setFormat(DiagnosticOptions::Vi); 1295 else { 1296 Success = false; 1297 if (Diags) 1298 Diags->Report(diag::err_drv_invalid_value) 1299 << Args.getLastArg(OPT_fdiagnostics_format)->getAsString(Args) 1300 << Format; 1301 } 1302 1303 Opts.ShowSourceRanges = Args.hasArg(OPT_fdiagnostics_print_source_range_info); 1304 Opts.ShowParseableFixits = Args.hasArg(OPT_fdiagnostics_parseable_fixits); 1305 Opts.ShowPresumedLoc = !Args.hasArg(OPT_fno_diagnostics_use_presumed_location); 1306 Opts.VerifyDiagnostics = Args.hasArg(OPT_verify) || Args.hasArg(OPT_verify_EQ); 1307 Opts.VerifyPrefixes = Args.getAllArgValues(OPT_verify_EQ); 1308 if (Args.hasArg(OPT_verify)) 1309 Opts.VerifyPrefixes.push_back("expected"); 1310 // Keep VerifyPrefixes in its original order for the sake of diagnostics, and 1311 // then sort it to prepare for fast lookup using std::binary_search. 1312 if (!checkVerifyPrefixes(Opts.VerifyPrefixes, Diags)) { 1313 Opts.VerifyDiagnostics = false; 1314 Success = false; 1315 } 1316 else 1317 llvm::sort(Opts.VerifyPrefixes.begin(), Opts.VerifyPrefixes.end()); 1318 DiagnosticLevelMask DiagMask = DiagnosticLevelMask::None; 1319 Success &= parseDiagnosticLevelMask("-verify-ignore-unexpected=", 1320 Args.getAllArgValues(OPT_verify_ignore_unexpected_EQ), 1321 Diags, DiagMask); 1322 if (Args.hasArg(OPT_verify_ignore_unexpected)) 1323 DiagMask = DiagnosticLevelMask::All; 1324 Opts.setVerifyIgnoreUnexpected(DiagMask); 1325 Opts.ElideType = !Args.hasArg(OPT_fno_elide_type); 1326 Opts.ShowTemplateTree = Args.hasArg(OPT_fdiagnostics_show_template_tree); 1327 Opts.ErrorLimit = getLastArgIntValue(Args, OPT_ferror_limit, 0, Diags); 1328 Opts.MacroBacktraceLimit = 1329 getLastArgIntValue(Args, OPT_fmacro_backtrace_limit, 1330 DiagnosticOptions::DefaultMacroBacktraceLimit, Diags); 1331 Opts.TemplateBacktraceLimit = getLastArgIntValue( 1332 Args, OPT_ftemplate_backtrace_limit, 1333 DiagnosticOptions::DefaultTemplateBacktraceLimit, Diags); 1334 Opts.ConstexprBacktraceLimit = getLastArgIntValue( 1335 Args, OPT_fconstexpr_backtrace_limit, 1336 DiagnosticOptions::DefaultConstexprBacktraceLimit, Diags); 1337 Opts.SpellCheckingLimit = getLastArgIntValue( 1338 Args, OPT_fspell_checking_limit, 1339 DiagnosticOptions::DefaultSpellCheckingLimit, Diags); 1340 Opts.SnippetLineLimit = getLastArgIntValue( 1341 Args, OPT_fcaret_diagnostics_max_lines, 1342 DiagnosticOptions::DefaultSnippetLineLimit, Diags); 1343 Opts.TabStop = getLastArgIntValue(Args, OPT_ftabstop, 1344 DiagnosticOptions::DefaultTabStop, Diags); 1345 if (Opts.TabStop == 0 || Opts.TabStop > DiagnosticOptions::MaxTabStop) { 1346 Opts.TabStop = DiagnosticOptions::DefaultTabStop; 1347 if (Diags) 1348 Diags->Report(diag::warn_ignoring_ftabstop_value) 1349 << Opts.TabStop << DiagnosticOptions::DefaultTabStop; 1350 } 1351 Opts.MessageLength = getLastArgIntValue(Args, OPT_fmessage_length, 0, Diags); 1352 addDiagnosticArgs(Args, OPT_W_Group, OPT_W_value_Group, Opts.Warnings); 1353 addDiagnosticArgs(Args, OPT_R_Group, OPT_R_value_Group, Opts.Remarks); 1354 1355 return Success; 1356 } 1357 1358 static void ParseFileSystemArgs(FileSystemOptions &Opts, ArgList &Args) { 1359 Opts.WorkingDir = Args.getLastArgValue(OPT_working_directory); 1360 } 1361 1362 /// Parse the argument to the -ftest-module-file-extension 1363 /// command-line argument. 1364 /// 1365 /// \returns true on error, false on success. 1366 static bool parseTestModuleFileExtensionArg(StringRef Arg, 1367 std::string &BlockName, 1368 unsigned &MajorVersion, 1369 unsigned &MinorVersion, 1370 bool &Hashed, 1371 std::string &UserInfo) { 1372 SmallVector<StringRef, 5> Args; 1373 Arg.split(Args, ':', 5); 1374 if (Args.size() < 5) 1375 return true; 1376 1377 BlockName = Args[0]; 1378 if (Args[1].getAsInteger(10, MajorVersion)) return true; 1379 if (Args[2].getAsInteger(10, MinorVersion)) return true; 1380 if (Args[3].getAsInteger(2, Hashed)) return true; 1381 if (Args.size() > 4) 1382 UserInfo = Args[4]; 1383 return false; 1384 } 1385 1386 static InputKind ParseFrontendArgs(FrontendOptions &Opts, ArgList &Args, 1387 DiagnosticsEngine &Diags, 1388 bool &IsHeaderFile) { 1389 Opts.ProgramAction = frontend::ParseSyntaxOnly; 1390 if (const Arg *A = Args.getLastArg(OPT_Action_Group)) { 1391 switch (A->getOption().getID()) { 1392 default: 1393 llvm_unreachable("Invalid option in group!"); 1394 case OPT_ast_list: 1395 Opts.ProgramAction = frontend::ASTDeclList; break; 1396 case OPT_ast_dump: 1397 case OPT_ast_dump_all: 1398 case OPT_ast_dump_lookups: 1399 Opts.ProgramAction = frontend::ASTDump; break; 1400 case OPT_ast_print: 1401 Opts.ProgramAction = frontend::ASTPrint; break; 1402 case OPT_ast_view: 1403 Opts.ProgramAction = frontend::ASTView; break; 1404 case OPT_compiler_options_dump: 1405 Opts.ProgramAction = frontend::DumpCompilerOptions; break; 1406 case OPT_dump_raw_tokens: 1407 Opts.ProgramAction = frontend::DumpRawTokens; break; 1408 case OPT_dump_tokens: 1409 Opts.ProgramAction = frontend::DumpTokens; break; 1410 case OPT_S: 1411 Opts.ProgramAction = frontend::EmitAssembly; break; 1412 case OPT_emit_llvm_bc: 1413 Opts.ProgramAction = frontend::EmitBC; break; 1414 case OPT_emit_html: 1415 Opts.ProgramAction = frontend::EmitHTML; break; 1416 case OPT_emit_llvm: 1417 Opts.ProgramAction = frontend::EmitLLVM; break; 1418 case OPT_emit_llvm_only: 1419 Opts.ProgramAction = frontend::EmitLLVMOnly; break; 1420 case OPT_emit_codegen_only: 1421 Opts.ProgramAction = frontend::EmitCodeGenOnly; break; 1422 case OPT_emit_obj: 1423 Opts.ProgramAction = frontend::EmitObj; break; 1424 case OPT_fixit_EQ: 1425 Opts.FixItSuffix = A->getValue(); 1426 // fall-through! 1427 case OPT_fixit: 1428 Opts.ProgramAction = frontend::FixIt; break; 1429 case OPT_emit_module: 1430 Opts.ProgramAction = frontend::GenerateModule; break; 1431 case OPT_emit_module_interface: 1432 Opts.ProgramAction = frontend::GenerateModuleInterface; break; 1433 case OPT_emit_pch: 1434 Opts.ProgramAction = frontend::GeneratePCH; break; 1435 case OPT_emit_pth: 1436 Opts.ProgramAction = frontend::GeneratePTH; break; 1437 case OPT_init_only: 1438 Opts.ProgramAction = frontend::InitOnly; break; 1439 case OPT_fsyntax_only: 1440 Opts.ProgramAction = frontend::ParseSyntaxOnly; break; 1441 case OPT_module_file_info: 1442 Opts.ProgramAction = frontend::ModuleFileInfo; break; 1443 case OPT_verify_pch: 1444 Opts.ProgramAction = frontend::VerifyPCH; break; 1445 case OPT_print_decl_contexts: 1446 Opts.ProgramAction = frontend::PrintDeclContext; break; 1447 case OPT_print_preamble: 1448 Opts.ProgramAction = frontend::PrintPreamble; break; 1449 case OPT_E: 1450 Opts.ProgramAction = frontend::PrintPreprocessedInput; break; 1451 case OPT_templight_dump: 1452 Opts.ProgramAction = frontend::TemplightDump; break; 1453 case OPT_rewrite_macros: 1454 Opts.ProgramAction = frontend::RewriteMacros; break; 1455 case OPT_rewrite_objc: 1456 Opts.ProgramAction = frontend::RewriteObjC; break; 1457 case OPT_rewrite_test: 1458 Opts.ProgramAction = frontend::RewriteTest; break; 1459 case OPT_analyze: 1460 Opts.ProgramAction = frontend::RunAnalysis; break; 1461 case OPT_migrate: 1462 Opts.ProgramAction = frontend::MigrateSource; break; 1463 case OPT_Eonly: 1464 Opts.ProgramAction = frontend::RunPreprocessorOnly; break; 1465 } 1466 } 1467 1468 if (const Arg* A = Args.getLastArg(OPT_plugin)) { 1469 Opts.Plugins.emplace_back(A->getValue(0)); 1470 Opts.ProgramAction = frontend::PluginAction; 1471 Opts.ActionName = A->getValue(); 1472 } 1473 Opts.AddPluginActions = Args.getAllArgValues(OPT_add_plugin); 1474 for (const auto *AA : Args.filtered(OPT_plugin_arg)) 1475 Opts.PluginArgs[AA->getValue(0)].emplace_back(AA->getValue(1)); 1476 1477 for (const std::string &Arg : 1478 Args.getAllArgValues(OPT_ftest_module_file_extension_EQ)) { 1479 std::string BlockName; 1480 unsigned MajorVersion; 1481 unsigned MinorVersion; 1482 bool Hashed; 1483 std::string UserInfo; 1484 if (parseTestModuleFileExtensionArg(Arg, BlockName, MajorVersion, 1485 MinorVersion, Hashed, UserInfo)) { 1486 Diags.Report(diag::err_test_module_file_extension_format) << Arg; 1487 1488 continue; 1489 } 1490 1491 // Add the testing module file extension. 1492 Opts.ModuleFileExtensions.push_back( 1493 std::make_shared<TestModuleFileExtension>( 1494 BlockName, MajorVersion, MinorVersion, Hashed, UserInfo)); 1495 } 1496 1497 if (const Arg *A = Args.getLastArg(OPT_code_completion_at)) { 1498 Opts.CodeCompletionAt = 1499 ParsedSourceLocation::FromString(A->getValue()); 1500 if (Opts.CodeCompletionAt.FileName.empty()) 1501 Diags.Report(diag::err_drv_invalid_value) 1502 << A->getAsString(Args) << A->getValue(); 1503 } 1504 Opts.DisableFree = Args.hasArg(OPT_disable_free); 1505 1506 Opts.OutputFile = Args.getLastArgValue(OPT_o); 1507 Opts.Plugins = Args.getAllArgValues(OPT_load); 1508 Opts.RelocatablePCH = Args.hasArg(OPT_relocatable_pch); 1509 Opts.ShowHelp = Args.hasArg(OPT_help); 1510 Opts.ShowStats = Args.hasArg(OPT_print_stats); 1511 Opts.ShowTimers = Args.hasArg(OPT_ftime_report); 1512 Opts.ShowVersion = Args.hasArg(OPT_version); 1513 Opts.ASTMergeFiles = Args.getAllArgValues(OPT_ast_merge); 1514 Opts.LLVMArgs = Args.getAllArgValues(OPT_mllvm); 1515 Opts.FixWhatYouCan = Args.hasArg(OPT_fix_what_you_can); 1516 Opts.FixOnlyWarnings = Args.hasArg(OPT_fix_only_warnings); 1517 Opts.FixAndRecompile = Args.hasArg(OPT_fixit_recompile); 1518 Opts.FixToTemporaries = Args.hasArg(OPT_fixit_to_temp); 1519 Opts.ASTDumpDecls = Args.hasArg(OPT_ast_dump); 1520 Opts.ASTDumpAll = Args.hasArg(OPT_ast_dump_all); 1521 Opts.ASTDumpFilter = Args.getLastArgValue(OPT_ast_dump_filter); 1522 Opts.ASTDumpLookups = Args.hasArg(OPT_ast_dump_lookups); 1523 Opts.UseGlobalModuleIndex = !Args.hasArg(OPT_fno_modules_global_index); 1524 Opts.GenerateGlobalModuleIndex = Opts.UseGlobalModuleIndex; 1525 Opts.ModuleMapFiles = Args.getAllArgValues(OPT_fmodule_map_file); 1526 // Only the -fmodule-file=<file> form. 1527 for (const auto *A : Args.filtered(OPT_fmodule_file)) { 1528 StringRef Val = A->getValue(); 1529 if (Val.find('=') == StringRef::npos) 1530 Opts.ModuleFiles.push_back(Val); 1531 } 1532 Opts.ModulesEmbedFiles = Args.getAllArgValues(OPT_fmodules_embed_file_EQ); 1533 Opts.ModulesEmbedAllFiles = Args.hasArg(OPT_fmodules_embed_all_files); 1534 Opts.IncludeTimestamps = !Args.hasArg(OPT_fno_pch_timestamp); 1535 1536 Opts.CodeCompleteOpts.IncludeMacros 1537 = Args.hasArg(OPT_code_completion_macros); 1538 Opts.CodeCompleteOpts.IncludeCodePatterns 1539 = Args.hasArg(OPT_code_completion_patterns); 1540 Opts.CodeCompleteOpts.IncludeGlobals 1541 = !Args.hasArg(OPT_no_code_completion_globals); 1542 Opts.CodeCompleteOpts.IncludeNamespaceLevelDecls 1543 = !Args.hasArg(OPT_no_code_completion_ns_level_decls); 1544 Opts.CodeCompleteOpts.IncludeBriefComments 1545 = Args.hasArg(OPT_code_completion_brief_comments); 1546 Opts.CodeCompleteOpts.IncludeFixIts 1547 = Args.hasArg(OPT_code_completion_with_fixits); 1548 1549 Opts.OverrideRecordLayoutsFile 1550 = Args.getLastArgValue(OPT_foverride_record_layout_EQ); 1551 Opts.AuxTriple = 1552 llvm::Triple::normalize(Args.getLastArgValue(OPT_aux_triple)); 1553 Opts.StatsFile = Args.getLastArgValue(OPT_stats_file); 1554 1555 if (const Arg *A = Args.getLastArg(OPT_arcmt_check, 1556 OPT_arcmt_modify, 1557 OPT_arcmt_migrate)) { 1558 switch (A->getOption().getID()) { 1559 default: 1560 llvm_unreachable("missed a case"); 1561 case OPT_arcmt_check: 1562 Opts.ARCMTAction = FrontendOptions::ARCMT_Check; 1563 break; 1564 case OPT_arcmt_modify: 1565 Opts.ARCMTAction = FrontendOptions::ARCMT_Modify; 1566 break; 1567 case OPT_arcmt_migrate: 1568 Opts.ARCMTAction = FrontendOptions::ARCMT_Migrate; 1569 break; 1570 } 1571 } 1572 Opts.MTMigrateDir = Args.getLastArgValue(OPT_mt_migrate_directory); 1573 Opts.ARCMTMigrateReportOut 1574 = Args.getLastArgValue(OPT_arcmt_migrate_report_output); 1575 Opts.ARCMTMigrateEmitARCErrors 1576 = Args.hasArg(OPT_arcmt_migrate_emit_arc_errors); 1577 1578 if (Args.hasArg(OPT_objcmt_migrate_literals)) 1579 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_Literals; 1580 if (Args.hasArg(OPT_objcmt_migrate_subscripting)) 1581 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_Subscripting; 1582 if (Args.hasArg(OPT_objcmt_migrate_property_dot_syntax)) 1583 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_PropertyDotSyntax; 1584 if (Args.hasArg(OPT_objcmt_migrate_property)) 1585 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_Property; 1586 if (Args.hasArg(OPT_objcmt_migrate_readonly_property)) 1587 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_ReadonlyProperty; 1588 if (Args.hasArg(OPT_objcmt_migrate_readwrite_property)) 1589 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_ReadwriteProperty; 1590 if (Args.hasArg(OPT_objcmt_migrate_annotation)) 1591 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_Annotation; 1592 if (Args.hasArg(OPT_objcmt_returns_innerpointer_property)) 1593 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_ReturnsInnerPointerProperty; 1594 if (Args.hasArg(OPT_objcmt_migrate_instancetype)) 1595 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_Instancetype; 1596 if (Args.hasArg(OPT_objcmt_migrate_nsmacros)) 1597 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_NsMacros; 1598 if (Args.hasArg(OPT_objcmt_migrate_protocol_conformance)) 1599 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_ProtocolConformance; 1600 if (Args.hasArg(OPT_objcmt_atomic_property)) 1601 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_AtomicProperty; 1602 if (Args.hasArg(OPT_objcmt_ns_nonatomic_iosonly)) 1603 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_NsAtomicIOSOnlyProperty; 1604 if (Args.hasArg(OPT_objcmt_migrate_designated_init)) 1605 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_DesignatedInitializer; 1606 if (Args.hasArg(OPT_objcmt_migrate_all)) 1607 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_MigrateDecls; 1608 1609 Opts.ObjCMTWhiteListPath = Args.getLastArgValue(OPT_objcmt_whitelist_dir_path); 1610 1611 if (Opts.ARCMTAction != FrontendOptions::ARCMT_None && 1612 Opts.ObjCMTAction != FrontendOptions::ObjCMT_None) { 1613 Diags.Report(diag::err_drv_argument_not_allowed_with) 1614 << "ARC migration" << "ObjC migration"; 1615 } 1616 1617 InputKind DashX(InputKind::Unknown); 1618 if (const Arg *A = Args.getLastArg(OPT_x)) { 1619 StringRef XValue = A->getValue(); 1620 1621 // Parse suffixes: '<lang>(-header|[-module-map][-cpp-output])'. 1622 // FIXME: Supporting '<lang>-header-cpp-output' would be useful. 1623 bool Preprocessed = XValue.consume_back("-cpp-output"); 1624 bool ModuleMap = XValue.consume_back("-module-map"); 1625 IsHeaderFile = 1626 !Preprocessed && !ModuleMap && XValue.consume_back("-header"); 1627 1628 // Principal languages. 1629 DashX = llvm::StringSwitch<InputKind>(XValue) 1630 .Case("c", InputKind::C) 1631 .Case("cl", InputKind::OpenCL) 1632 .Case("cuda", InputKind::CUDA) 1633 .Case("hip", InputKind::HIP) 1634 .Case("c++", InputKind::CXX) 1635 .Case("objective-c", InputKind::ObjC) 1636 .Case("objective-c++", InputKind::ObjCXX) 1637 .Case("renderscript", InputKind::RenderScript) 1638 .Default(InputKind::Unknown); 1639 1640 // "objc[++]-cpp-output" is an acceptable synonym for 1641 // "objective-c[++]-cpp-output". 1642 if (DashX.isUnknown() && Preprocessed && !IsHeaderFile && !ModuleMap) 1643 DashX = llvm::StringSwitch<InputKind>(XValue) 1644 .Case("objc", InputKind::ObjC) 1645 .Case("objc++", InputKind::ObjCXX) 1646 .Default(InputKind::Unknown); 1647 1648 // Some special cases cannot be combined with suffixes. 1649 if (DashX.isUnknown() && !Preprocessed && !ModuleMap && !IsHeaderFile) 1650 DashX = llvm::StringSwitch<InputKind>(XValue) 1651 .Case("cpp-output", InputKind(InputKind::C).getPreprocessed()) 1652 .Case("assembler-with-cpp", InputKind::Asm) 1653 .Cases("ast", "pcm", 1654 InputKind(InputKind::Unknown, InputKind::Precompiled)) 1655 .Case("ir", InputKind::LLVM_IR) 1656 .Default(InputKind::Unknown); 1657 1658 if (DashX.isUnknown()) 1659 Diags.Report(diag::err_drv_invalid_value) 1660 << A->getAsString(Args) << A->getValue(); 1661 1662 if (Preprocessed) 1663 DashX = DashX.getPreprocessed(); 1664 if (ModuleMap) 1665 DashX = DashX.withFormat(InputKind::ModuleMap); 1666 } 1667 1668 // '-' is the default input if none is given. 1669 std::vector<std::string> Inputs = Args.getAllArgValues(OPT_INPUT); 1670 Opts.Inputs.clear(); 1671 if (Inputs.empty()) 1672 Inputs.push_back("-"); 1673 for (unsigned i = 0, e = Inputs.size(); i != e; ++i) { 1674 InputKind IK = DashX; 1675 if (IK.isUnknown()) { 1676 IK = FrontendOptions::getInputKindForExtension( 1677 StringRef(Inputs[i]).rsplit('.').second); 1678 // FIXME: Warn on this? 1679 if (IK.isUnknown()) 1680 IK = InputKind::C; 1681 // FIXME: Remove this hack. 1682 if (i == 0) 1683 DashX = IK; 1684 } 1685 1686 // The -emit-module action implicitly takes a module map. 1687 if (Opts.ProgramAction == frontend::GenerateModule && 1688 IK.getFormat() == InputKind::Source) 1689 IK = IK.withFormat(InputKind::ModuleMap); 1690 1691 Opts.Inputs.emplace_back(std::move(Inputs[i]), IK); 1692 } 1693 1694 return DashX; 1695 } 1696 1697 std::string CompilerInvocation::GetResourcesPath(const char *Argv0, 1698 void *MainAddr) { 1699 std::string ClangExecutable = 1700 llvm::sys::fs::getMainExecutable(Argv0, MainAddr); 1701 StringRef Dir = llvm::sys::path::parent_path(ClangExecutable); 1702 1703 // Compute the path to the resource directory. 1704 StringRef ClangResourceDir(CLANG_RESOURCE_DIR); 1705 SmallString<128> P(Dir); 1706 if (ClangResourceDir != "") 1707 llvm::sys::path::append(P, ClangResourceDir); 1708 else 1709 llvm::sys::path::append(P, "..", Twine("lib") + CLANG_LIBDIR_SUFFIX, 1710 "clang", CLANG_VERSION_STRING); 1711 1712 return P.str(); 1713 } 1714 1715 static void ParseHeaderSearchArgs(HeaderSearchOptions &Opts, ArgList &Args, 1716 const std::string &WorkingDir) { 1717 Opts.Sysroot = Args.getLastArgValue(OPT_isysroot, "/"); 1718 Opts.Verbose = Args.hasArg(OPT_v); 1719 Opts.UseBuiltinIncludes = !Args.hasArg(OPT_nobuiltininc); 1720 Opts.UseStandardSystemIncludes = !Args.hasArg(OPT_nostdsysteminc); 1721 Opts.UseStandardCXXIncludes = !Args.hasArg(OPT_nostdincxx); 1722 if (const Arg *A = Args.getLastArg(OPT_stdlib_EQ)) 1723 Opts.UseLibcxx = (strcmp(A->getValue(), "libc++") == 0); 1724 Opts.ResourceDir = Args.getLastArgValue(OPT_resource_dir); 1725 1726 // Canonicalize -fmodules-cache-path before storing it. 1727 SmallString<128> P(Args.getLastArgValue(OPT_fmodules_cache_path)); 1728 if (!(P.empty() || llvm::sys::path::is_absolute(P))) { 1729 if (WorkingDir.empty()) 1730 llvm::sys::fs::make_absolute(P); 1731 else 1732 llvm::sys::fs::make_absolute(WorkingDir, P); 1733 } 1734 llvm::sys::path::remove_dots(P); 1735 Opts.ModuleCachePath = P.str(); 1736 1737 Opts.ModuleUserBuildPath = Args.getLastArgValue(OPT_fmodules_user_build_path); 1738 // Only the -fmodule-file=<name>=<file> form. 1739 for (const auto *A : Args.filtered(OPT_fmodule_file)) { 1740 StringRef Val = A->getValue(); 1741 if (Val.find('=') != StringRef::npos) 1742 Opts.PrebuiltModuleFiles.insert(Val.split('=')); 1743 } 1744 for (const auto *A : Args.filtered(OPT_fprebuilt_module_path)) 1745 Opts.AddPrebuiltModulePath(A->getValue()); 1746 Opts.DisableModuleHash = Args.hasArg(OPT_fdisable_module_hash); 1747 Opts.ModulesHashContent = Args.hasArg(OPT_fmodules_hash_content); 1748 Opts.ModulesValidateDiagnosticOptions = 1749 !Args.hasArg(OPT_fmodules_disable_diagnostic_validation); 1750 Opts.ImplicitModuleMaps = Args.hasArg(OPT_fimplicit_module_maps); 1751 Opts.ModuleMapFileHomeIsCwd = Args.hasArg(OPT_fmodule_map_file_home_is_cwd); 1752 Opts.ModuleCachePruneInterval = 1753 getLastArgIntValue(Args, OPT_fmodules_prune_interval, 7 * 24 * 60 * 60); 1754 Opts.ModuleCachePruneAfter = 1755 getLastArgIntValue(Args, OPT_fmodules_prune_after, 31 * 24 * 60 * 60); 1756 Opts.ModulesValidateOncePerBuildSession = 1757 Args.hasArg(OPT_fmodules_validate_once_per_build_session); 1758 Opts.BuildSessionTimestamp = 1759 getLastArgUInt64Value(Args, OPT_fbuild_session_timestamp, 0); 1760 Opts.ModulesValidateSystemHeaders = 1761 Args.hasArg(OPT_fmodules_validate_system_headers); 1762 if (const Arg *A = Args.getLastArg(OPT_fmodule_format_EQ)) 1763 Opts.ModuleFormat = A->getValue(); 1764 1765 for (const auto *A : Args.filtered(OPT_fmodules_ignore_macro)) { 1766 StringRef MacroDef = A->getValue(); 1767 Opts.ModulesIgnoreMacros.insert( 1768 llvm::CachedHashString(MacroDef.split('=').first)); 1769 } 1770 1771 // Add -I..., -F..., and -index-header-map options in order. 1772 bool IsIndexHeaderMap = false; 1773 bool IsSysrootSpecified = 1774 Args.hasArg(OPT__sysroot_EQ) || Args.hasArg(OPT_isysroot); 1775 for (const auto *A : Args.filtered(OPT_I, OPT_F, OPT_index_header_map)) { 1776 if (A->getOption().matches(OPT_index_header_map)) { 1777 // -index-header-map applies to the next -I or -F. 1778 IsIndexHeaderMap = true; 1779 continue; 1780 } 1781 1782 frontend::IncludeDirGroup Group = 1783 IsIndexHeaderMap ? frontend::IndexHeaderMap : frontend::Angled; 1784 1785 bool IsFramework = A->getOption().matches(OPT_F); 1786 std::string Path = A->getValue(); 1787 1788 if (IsSysrootSpecified && !IsFramework && A->getValue()[0] == '=') { 1789 SmallString<32> Buffer; 1790 llvm::sys::path::append(Buffer, Opts.Sysroot, 1791 llvm::StringRef(A->getValue()).substr(1)); 1792 Path = Buffer.str(); 1793 } 1794 1795 Opts.AddPath(Path, Group, IsFramework, 1796 /*IgnoreSysroot*/ true); 1797 IsIndexHeaderMap = false; 1798 } 1799 1800 // Add -iprefix/-iwithprefix/-iwithprefixbefore options. 1801 StringRef Prefix = ""; // FIXME: This isn't the correct default prefix. 1802 for (const auto *A : 1803 Args.filtered(OPT_iprefix, OPT_iwithprefix, OPT_iwithprefixbefore)) { 1804 if (A->getOption().matches(OPT_iprefix)) 1805 Prefix = A->getValue(); 1806 else if (A->getOption().matches(OPT_iwithprefix)) 1807 Opts.AddPath(Prefix.str() + A->getValue(), frontend::After, false, true); 1808 else 1809 Opts.AddPath(Prefix.str() + A->getValue(), frontend::Angled, false, true); 1810 } 1811 1812 for (const auto *A : Args.filtered(OPT_idirafter)) 1813 Opts.AddPath(A->getValue(), frontend::After, false, true); 1814 for (const auto *A : Args.filtered(OPT_iquote)) 1815 Opts.AddPath(A->getValue(), frontend::Quoted, false, true); 1816 for (const auto *A : Args.filtered(OPT_isystem, OPT_iwithsysroot)) 1817 Opts.AddPath(A->getValue(), frontend::System, false, 1818 !A->getOption().matches(OPT_iwithsysroot)); 1819 for (const auto *A : Args.filtered(OPT_iframework)) 1820 Opts.AddPath(A->getValue(), frontend::System, true, true); 1821 for (const auto *A : Args.filtered(OPT_iframeworkwithsysroot)) 1822 Opts.AddPath(A->getValue(), frontend::System, /*IsFramework=*/true, 1823 /*IgnoreSysRoot=*/false); 1824 1825 // Add the paths for the various language specific isystem flags. 1826 for (const auto *A : Args.filtered(OPT_c_isystem)) 1827 Opts.AddPath(A->getValue(), frontend::CSystem, false, true); 1828 for (const auto *A : Args.filtered(OPT_cxx_isystem)) 1829 Opts.AddPath(A->getValue(), frontend::CXXSystem, false, true); 1830 for (const auto *A : Args.filtered(OPT_objc_isystem)) 1831 Opts.AddPath(A->getValue(), frontend::ObjCSystem, false,true); 1832 for (const auto *A : Args.filtered(OPT_objcxx_isystem)) 1833 Opts.AddPath(A->getValue(), frontend::ObjCXXSystem, false, true); 1834 1835 // Add the internal paths from a driver that detects standard include paths. 1836 for (const auto *A : 1837 Args.filtered(OPT_internal_isystem, OPT_internal_externc_isystem)) { 1838 frontend::IncludeDirGroup Group = frontend::System; 1839 if (A->getOption().matches(OPT_internal_externc_isystem)) 1840 Group = frontend::ExternCSystem; 1841 Opts.AddPath(A->getValue(), Group, false, true); 1842 } 1843 1844 // Add the path prefixes which are implicitly treated as being system headers. 1845 for (const auto *A : 1846 Args.filtered(OPT_system_header_prefix, OPT_no_system_header_prefix)) 1847 Opts.AddSystemHeaderPrefix( 1848 A->getValue(), A->getOption().matches(OPT_system_header_prefix)); 1849 1850 for (const auto *A : Args.filtered(OPT_ivfsoverlay)) 1851 Opts.AddVFSOverlayFile(A->getValue()); 1852 } 1853 1854 void CompilerInvocation::setLangDefaults(LangOptions &Opts, InputKind IK, 1855 const llvm::Triple &T, 1856 PreprocessorOptions &PPOpts, 1857 LangStandard::Kind LangStd) { 1858 // Set some properties which depend solely on the input kind; it would be nice 1859 // to move these to the language standard, and have the driver resolve the 1860 // input kind + language standard. 1861 // 1862 // FIXME: Perhaps a better model would be for a single source file to have 1863 // multiple language standards (C / C++ std, ObjC std, OpenCL std, OpenMP std) 1864 // simultaneously active? 1865 if (IK.getLanguage() == InputKind::Asm) { 1866 Opts.AsmPreprocessor = 1; 1867 } else if (IK.isObjectiveC()) { 1868 Opts.ObjC1 = Opts.ObjC2 = 1; 1869 } 1870 1871 if (LangStd == LangStandard::lang_unspecified) { 1872 // Based on the base language, pick one. 1873 switch (IK.getLanguage()) { 1874 case InputKind::Unknown: 1875 case InputKind::LLVM_IR: 1876 llvm_unreachable("Invalid input kind!"); 1877 case InputKind::OpenCL: 1878 LangStd = LangStandard::lang_opencl10; 1879 break; 1880 case InputKind::CUDA: 1881 LangStd = LangStandard::lang_cuda; 1882 break; 1883 case InputKind::Asm: 1884 case InputKind::C: 1885 #if defined(CLANG_DEFAULT_STD_C) 1886 LangStd = CLANG_DEFAULT_STD_C; 1887 #else 1888 // The PS4 uses C99 as the default C standard. 1889 if (T.isPS4()) 1890 LangStd = LangStandard::lang_gnu99; 1891 else 1892 LangStd = LangStandard::lang_gnu11; 1893 #endif 1894 break; 1895 case InputKind::ObjC: 1896 #if defined(CLANG_DEFAULT_STD_C) 1897 LangStd = CLANG_DEFAULT_STD_C; 1898 #else 1899 LangStd = LangStandard::lang_gnu11; 1900 #endif 1901 break; 1902 case InputKind::CXX: 1903 case InputKind::ObjCXX: 1904 #if defined(CLANG_DEFAULT_STD_CXX) 1905 LangStd = CLANG_DEFAULT_STD_CXX; 1906 #else 1907 LangStd = LangStandard::lang_gnucxx14; 1908 #endif 1909 break; 1910 case InputKind::RenderScript: 1911 LangStd = LangStandard::lang_c99; 1912 break; 1913 case InputKind::HIP: 1914 LangStd = LangStandard::lang_hip; 1915 break; 1916 } 1917 } 1918 1919 const LangStandard &Std = LangStandard::getLangStandardForKind(LangStd); 1920 Opts.LineComment = Std.hasLineComments(); 1921 Opts.C99 = Std.isC99(); 1922 Opts.C11 = Std.isC11(); 1923 Opts.C17 = Std.isC17(); 1924 Opts.CPlusPlus = Std.isCPlusPlus(); 1925 Opts.CPlusPlus11 = Std.isCPlusPlus11(); 1926 Opts.CPlusPlus14 = Std.isCPlusPlus14(); 1927 Opts.CPlusPlus17 = Std.isCPlusPlus17(); 1928 Opts.CPlusPlus2a = Std.isCPlusPlus2a(); 1929 Opts.Digraphs = Std.hasDigraphs(); 1930 Opts.GNUMode = Std.isGNUMode(); 1931 Opts.GNUInline = !Opts.C99 && !Opts.CPlusPlus; 1932 Opts.HexFloats = Std.hasHexFloats(); 1933 Opts.ImplicitInt = Std.hasImplicitInt(); 1934 1935 // Set OpenCL Version. 1936 Opts.OpenCL = Std.isOpenCL(); 1937 if (LangStd == LangStandard::lang_opencl10) 1938 Opts.OpenCLVersion = 100; 1939 else if (LangStd == LangStandard::lang_opencl11) 1940 Opts.OpenCLVersion = 110; 1941 else if (LangStd == LangStandard::lang_opencl12) 1942 Opts.OpenCLVersion = 120; 1943 else if (LangStd == LangStandard::lang_opencl20) 1944 Opts.OpenCLVersion = 200; 1945 else if (LangStd == LangStandard::lang_openclcpp) 1946 Opts.OpenCLCPlusPlusVersion = 100; 1947 1948 // OpenCL has some additional defaults. 1949 if (Opts.OpenCL) { 1950 Opts.AltiVec = 0; 1951 Opts.ZVector = 0; 1952 Opts.LaxVectorConversions = 0; 1953 Opts.setDefaultFPContractMode(LangOptions::FPC_On); 1954 Opts.NativeHalfType = 1; 1955 Opts.NativeHalfArgsAndReturns = 1; 1956 Opts.OpenCLCPlusPlus = Opts.CPlusPlus; 1957 // Include default header file for OpenCL. 1958 if (Opts.IncludeDefaultHeader) { 1959 PPOpts.Includes.push_back("opencl-c.h"); 1960 } 1961 } 1962 1963 Opts.HIP = IK.getLanguage() == InputKind::HIP; 1964 Opts.CUDA = IK.getLanguage() == InputKind::CUDA || Opts.HIP; 1965 if (Opts.CUDA) 1966 // Set default FP_CONTRACT to FAST. 1967 Opts.setDefaultFPContractMode(LangOptions::FPC_Fast); 1968 1969 Opts.RenderScript = IK.getLanguage() == InputKind::RenderScript; 1970 if (Opts.RenderScript) { 1971 Opts.NativeHalfType = 1; 1972 Opts.NativeHalfArgsAndReturns = 1; 1973 } 1974 1975 // OpenCL and C++ both have bool, true, false keywords. 1976 Opts.Bool = Opts.OpenCL || Opts.CPlusPlus; 1977 1978 // OpenCL has half keyword 1979 Opts.Half = Opts.OpenCL; 1980 1981 // C++ has wchar_t keyword. 1982 Opts.WChar = Opts.CPlusPlus; 1983 1984 Opts.GNUKeywords = Opts.GNUMode; 1985 Opts.CXXOperatorNames = Opts.CPlusPlus; 1986 1987 Opts.AlignedAllocation = Opts.CPlusPlus17; 1988 1989 Opts.DollarIdents = !Opts.AsmPreprocessor; 1990 } 1991 1992 /// Attempt to parse a visibility value out of the given argument. 1993 static Visibility parseVisibility(Arg *arg, ArgList &args, 1994 DiagnosticsEngine &diags) { 1995 StringRef value = arg->getValue(); 1996 if (value == "default") { 1997 return DefaultVisibility; 1998 } else if (value == "hidden" || value == "internal") { 1999 return HiddenVisibility; 2000 } else if (value == "protected") { 2001 // FIXME: diagnose if target does not support protected visibility 2002 return ProtectedVisibility; 2003 } 2004 2005 diags.Report(diag::err_drv_invalid_value) 2006 << arg->getAsString(args) << value; 2007 return DefaultVisibility; 2008 } 2009 2010 /// Check if input file kind and language standard are compatible. 2011 static bool IsInputCompatibleWithStandard(InputKind IK, 2012 const LangStandard &S) { 2013 switch (IK.getLanguage()) { 2014 case InputKind::Unknown: 2015 case InputKind::LLVM_IR: 2016 llvm_unreachable("should not parse language flags for this input"); 2017 2018 case InputKind::C: 2019 case InputKind::ObjC: 2020 case InputKind::RenderScript: 2021 return S.getLanguage() == InputKind::C; 2022 2023 case InputKind::OpenCL: 2024 return S.getLanguage() == InputKind::OpenCL; 2025 2026 case InputKind::CXX: 2027 case InputKind::ObjCXX: 2028 return S.getLanguage() == InputKind::CXX; 2029 2030 case InputKind::CUDA: 2031 // FIXME: What -std= values should be permitted for CUDA compilations? 2032 return S.getLanguage() == InputKind::CUDA || 2033 S.getLanguage() == InputKind::CXX; 2034 2035 case InputKind::HIP: 2036 return S.getLanguage() == InputKind::CXX || 2037 S.getLanguage() == InputKind::HIP; 2038 2039 case InputKind::Asm: 2040 // Accept (and ignore) all -std= values. 2041 // FIXME: The -std= value is not ignored; it affects the tokenization 2042 // and preprocessing rules if we're preprocessing this asm input. 2043 return true; 2044 } 2045 2046 llvm_unreachable("unexpected input language"); 2047 } 2048 2049 /// Get language name for given input kind. 2050 static const StringRef GetInputKindName(InputKind IK) { 2051 switch (IK.getLanguage()) { 2052 case InputKind::C: 2053 return "C"; 2054 case InputKind::ObjC: 2055 return "Objective-C"; 2056 case InputKind::CXX: 2057 return "C++"; 2058 case InputKind::ObjCXX: 2059 return "Objective-C++"; 2060 case InputKind::OpenCL: 2061 return "OpenCL"; 2062 case InputKind::CUDA: 2063 return "CUDA"; 2064 case InputKind::RenderScript: 2065 return "RenderScript"; 2066 case InputKind::HIP: 2067 return "HIP"; 2068 2069 case InputKind::Asm: 2070 return "Asm"; 2071 case InputKind::LLVM_IR: 2072 return "LLVM IR"; 2073 2074 case InputKind::Unknown: 2075 break; 2076 } 2077 llvm_unreachable("unknown input language"); 2078 } 2079 2080 static void ParseLangArgs(LangOptions &Opts, ArgList &Args, InputKind IK, 2081 const TargetOptions &TargetOpts, 2082 PreprocessorOptions &PPOpts, 2083 DiagnosticsEngine &Diags) { 2084 // FIXME: Cleanup per-file based stuff. 2085 LangStandard::Kind LangStd = LangStandard::lang_unspecified; 2086 if (const Arg *A = Args.getLastArg(OPT_std_EQ)) { 2087 LangStd = llvm::StringSwitch<LangStandard::Kind>(A->getValue()) 2088 #define LANGSTANDARD(id, name, lang, desc, features) \ 2089 .Case(name, LangStandard::lang_##id) 2090 #define LANGSTANDARD_ALIAS(id, alias) \ 2091 .Case(alias, LangStandard::lang_##id) 2092 #include "clang/Frontend/LangStandards.def" 2093 .Default(LangStandard::lang_unspecified); 2094 if (LangStd == LangStandard::lang_unspecified) { 2095 Diags.Report(diag::err_drv_invalid_value) 2096 << A->getAsString(Args) << A->getValue(); 2097 // Report supported standards with short description. 2098 for (unsigned KindValue = 0; 2099 KindValue != LangStandard::lang_unspecified; 2100 ++KindValue) { 2101 const LangStandard &Std = LangStandard::getLangStandardForKind( 2102 static_cast<LangStandard::Kind>(KindValue)); 2103 if (IsInputCompatibleWithStandard(IK, Std)) { 2104 auto Diag = Diags.Report(diag::note_drv_use_standard); 2105 Diag << Std.getName() << Std.getDescription(); 2106 unsigned NumAliases = 0; 2107 #define LANGSTANDARD(id, name, lang, desc, features) 2108 #define LANGSTANDARD_ALIAS(id, alias) \ 2109 if (KindValue == LangStandard::lang_##id) ++NumAliases; 2110 #define LANGSTANDARD_ALIAS_DEPR(id, alias) 2111 #include "clang/Frontend/LangStandards.def" 2112 Diag << NumAliases; 2113 #define LANGSTANDARD(id, name, lang, desc, features) 2114 #define LANGSTANDARD_ALIAS(id, alias) \ 2115 if (KindValue == LangStandard::lang_##id) Diag << alias; 2116 #define LANGSTANDARD_ALIAS_DEPR(id, alias) 2117 #include "clang/Frontend/LangStandards.def" 2118 } 2119 } 2120 } else { 2121 // Valid standard, check to make sure language and standard are 2122 // compatible. 2123 const LangStandard &Std = LangStandard::getLangStandardForKind(LangStd); 2124 if (!IsInputCompatibleWithStandard(IK, Std)) { 2125 Diags.Report(diag::err_drv_argument_not_allowed_with) 2126 << A->getAsString(Args) << GetInputKindName(IK); 2127 } 2128 } 2129 } 2130 2131 if (const Arg *A = Args.getLastArg(OPT_fcf_protection_EQ)) { 2132 StringRef Name = A->getValue(); 2133 if (Name == "full" || Name == "branch") { 2134 Opts.CFProtectionBranch = 1; 2135 } 2136 } 2137 // -cl-std only applies for OpenCL language standards. 2138 // Override the -std option in this case. 2139 if (const Arg *A = Args.getLastArg(OPT_cl_std_EQ)) { 2140 LangStandard::Kind OpenCLLangStd 2141 = llvm::StringSwitch<LangStandard::Kind>(A->getValue()) 2142 .Cases("cl", "CL", LangStandard::lang_opencl10) 2143 .Cases("cl1.1", "CL1.1", LangStandard::lang_opencl11) 2144 .Cases("cl1.2", "CL1.2", LangStandard::lang_opencl12) 2145 .Cases("cl2.0", "CL2.0", LangStandard::lang_opencl20) 2146 .Case("c++", LangStandard::lang_openclcpp) 2147 .Default(LangStandard::lang_unspecified); 2148 2149 if (OpenCLLangStd == LangStandard::lang_unspecified) { 2150 Diags.Report(diag::err_drv_invalid_value) 2151 << A->getAsString(Args) << A->getValue(); 2152 } 2153 else 2154 LangStd = OpenCLLangStd; 2155 } 2156 2157 Opts.IncludeDefaultHeader = Args.hasArg(OPT_finclude_default_header); 2158 2159 llvm::Triple T(TargetOpts.Triple); 2160 CompilerInvocation::setLangDefaults(Opts, IK, T, PPOpts, LangStd); 2161 2162 // -cl-strict-aliasing needs to emit diagnostic in the case where CL > 1.0. 2163 // This option should be deprecated for CL > 1.0 because 2164 // this option was added for compatibility with OpenCL 1.0. 2165 if (Args.getLastArg(OPT_cl_strict_aliasing) 2166 && Opts.OpenCLVersion > 100) { 2167 Diags.Report(diag::warn_option_invalid_ocl_version) 2168 << Opts.getOpenCLVersionTuple().getAsString() 2169 << Args.getLastArg(OPT_cl_strict_aliasing)->getAsString(Args); 2170 } 2171 2172 // We abuse '-f[no-]gnu-keywords' to force overriding all GNU-extension 2173 // keywords. This behavior is provided by GCC's poorly named '-fasm' flag, 2174 // while a subset (the non-C++ GNU keywords) is provided by GCC's 2175 // '-fgnu-keywords'. Clang conflates the two for simplicity under the single 2176 // name, as it doesn't seem a useful distinction. 2177 Opts.GNUKeywords = Args.hasFlag(OPT_fgnu_keywords, OPT_fno_gnu_keywords, 2178 Opts.GNUKeywords); 2179 2180 Opts.Digraphs = Args.hasFlag(OPT_fdigraphs, OPT_fno_digraphs, Opts.Digraphs); 2181 2182 if (Args.hasArg(OPT_fno_operator_names)) 2183 Opts.CXXOperatorNames = 0; 2184 2185 if (Args.hasArg(OPT_fcuda_is_device)) 2186 Opts.CUDAIsDevice = 1; 2187 2188 if (Args.hasArg(OPT_fcuda_allow_variadic_functions)) 2189 Opts.CUDAAllowVariadicFunctions = 1; 2190 2191 if (Args.hasArg(OPT_fno_cuda_host_device_constexpr)) 2192 Opts.CUDAHostDeviceConstexpr = 0; 2193 2194 if (Opts.CUDAIsDevice && Args.hasArg(OPT_fcuda_flush_denormals_to_zero)) 2195 Opts.CUDADeviceFlushDenormalsToZero = 1; 2196 2197 if (Opts.CUDAIsDevice && Args.hasArg(OPT_fcuda_approx_transcendentals)) 2198 Opts.CUDADeviceApproxTranscendentals = 1; 2199 2200 Opts.CUDARelocatableDeviceCode = Args.hasArg(OPT_fcuda_rdc); 2201 2202 if (Opts.ObjC1) { 2203 if (Arg *arg = Args.getLastArg(OPT_fobjc_runtime_EQ)) { 2204 StringRef value = arg->getValue(); 2205 if (Opts.ObjCRuntime.tryParse(value)) 2206 Diags.Report(diag::err_drv_unknown_objc_runtime) << value; 2207 } 2208 2209 if (Args.hasArg(OPT_fobjc_gc_only)) 2210 Opts.setGC(LangOptions::GCOnly); 2211 else if (Args.hasArg(OPT_fobjc_gc)) 2212 Opts.setGC(LangOptions::HybridGC); 2213 else if (Args.hasArg(OPT_fobjc_arc)) { 2214 Opts.ObjCAutoRefCount = 1; 2215 if (!Opts.ObjCRuntime.allowsARC()) 2216 Diags.Report(diag::err_arc_unsupported_on_runtime); 2217 } 2218 2219 // ObjCWeakRuntime tracks whether the runtime supports __weak, not 2220 // whether the feature is actually enabled. This is predominantly 2221 // determined by -fobjc-runtime, but we allow it to be overridden 2222 // from the command line for testing purposes. 2223 if (Args.hasArg(OPT_fobjc_runtime_has_weak)) 2224 Opts.ObjCWeakRuntime = 1; 2225 else 2226 Opts.ObjCWeakRuntime = Opts.ObjCRuntime.allowsWeak(); 2227 2228 // ObjCWeak determines whether __weak is actually enabled. 2229 // Note that we allow -fno-objc-weak to disable this even in ARC mode. 2230 if (auto weakArg = Args.getLastArg(OPT_fobjc_weak, OPT_fno_objc_weak)) { 2231 if (!weakArg->getOption().matches(OPT_fobjc_weak)) { 2232 assert(!Opts.ObjCWeak); 2233 } else if (Opts.getGC() != LangOptions::NonGC) { 2234 Diags.Report(diag::err_objc_weak_with_gc); 2235 } else if (!Opts.ObjCWeakRuntime) { 2236 Diags.Report(diag::err_objc_weak_unsupported); 2237 } else { 2238 Opts.ObjCWeak = 1; 2239 } 2240 } else if (Opts.ObjCAutoRefCount) { 2241 Opts.ObjCWeak = Opts.ObjCWeakRuntime; 2242 } 2243 2244 if (Args.hasArg(OPT_fno_objc_infer_related_result_type)) 2245 Opts.ObjCInferRelatedResultType = 0; 2246 2247 if (Args.hasArg(OPT_fobjc_subscripting_legacy_runtime)) 2248 Opts.ObjCSubscriptingLegacyRuntime = 2249 (Opts.ObjCRuntime.getKind() == ObjCRuntime::FragileMacOSX); 2250 } 2251 2252 if (Args.hasArg(OPT_fgnu89_inline)) { 2253 if (Opts.CPlusPlus) 2254 Diags.Report(diag::err_drv_argument_not_allowed_with) 2255 << "-fgnu89-inline" << GetInputKindName(IK); 2256 else 2257 Opts.GNUInline = 1; 2258 } 2259 2260 if (Args.hasArg(OPT_fapple_kext)) { 2261 if (!Opts.CPlusPlus) 2262 Diags.Report(diag::warn_c_kext); 2263 else 2264 Opts.AppleKext = 1; 2265 } 2266 2267 if (Args.hasArg(OPT_print_ivar_layout)) 2268 Opts.ObjCGCBitmapPrint = 1; 2269 if (Args.hasArg(OPT_fno_constant_cfstrings)) 2270 Opts.NoConstantCFStrings = 1; 2271 2272 if (Args.hasArg(OPT_fzvector)) 2273 Opts.ZVector = 1; 2274 2275 if (Args.hasArg(OPT_pthread)) 2276 Opts.POSIXThreads = 1; 2277 2278 // The value-visibility mode defaults to "default". 2279 if (Arg *visOpt = Args.getLastArg(OPT_fvisibility)) { 2280 Opts.setValueVisibilityMode(parseVisibility(visOpt, Args, Diags)); 2281 } else { 2282 Opts.setValueVisibilityMode(DefaultVisibility); 2283 } 2284 2285 // The type-visibility mode defaults to the value-visibility mode. 2286 if (Arg *typeVisOpt = Args.getLastArg(OPT_ftype_visibility)) { 2287 Opts.setTypeVisibilityMode(parseVisibility(typeVisOpt, Args, Diags)); 2288 } else { 2289 Opts.setTypeVisibilityMode(Opts.getValueVisibilityMode()); 2290 } 2291 2292 if (Args.hasArg(OPT_fvisibility_inlines_hidden)) 2293 Opts.InlineVisibilityHidden = 1; 2294 2295 if (Args.hasArg(OPT_ftrapv)) { 2296 Opts.setSignedOverflowBehavior(LangOptions::SOB_Trapping); 2297 // Set the handler, if one is specified. 2298 Opts.OverflowHandler = 2299 Args.getLastArgValue(OPT_ftrapv_handler); 2300 } 2301 else if (Args.hasArg(OPT_fwrapv)) 2302 Opts.setSignedOverflowBehavior(LangOptions::SOB_Defined); 2303 2304 Opts.MSVCCompat = Args.hasArg(OPT_fms_compatibility); 2305 Opts.MicrosoftExt = Opts.MSVCCompat || Args.hasArg(OPT_fms_extensions); 2306 Opts.AsmBlocks = Args.hasArg(OPT_fasm_blocks) || Opts.MicrosoftExt; 2307 Opts.MSCompatibilityVersion = 0; 2308 if (const Arg *A = Args.getLastArg(OPT_fms_compatibility_version)) { 2309 VersionTuple VT; 2310 if (VT.tryParse(A->getValue())) 2311 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) 2312 << A->getValue(); 2313 Opts.MSCompatibilityVersion = VT.getMajor() * 10000000 + 2314 VT.getMinor().getValueOr(0) * 100000 + 2315 VT.getSubminor().getValueOr(0); 2316 } 2317 2318 // Mimicing gcc's behavior, trigraphs are only enabled if -trigraphs 2319 // is specified, or -std is set to a conforming mode. 2320 // Trigraphs are disabled by default in c++1z onwards. 2321 Opts.Trigraphs = !Opts.GNUMode && !Opts.MSVCCompat && !Opts.CPlusPlus17; 2322 Opts.Trigraphs = 2323 Args.hasFlag(OPT_ftrigraphs, OPT_fno_trigraphs, Opts.Trigraphs); 2324 2325 Opts.DollarIdents = Args.hasFlag(OPT_fdollars_in_identifiers, 2326 OPT_fno_dollars_in_identifiers, 2327 Opts.DollarIdents); 2328 Opts.PascalStrings = Args.hasArg(OPT_fpascal_strings); 2329 Opts.VtorDispMode = getLastArgIntValue(Args, OPT_vtordisp_mode_EQ, 1, Diags); 2330 Opts.Borland = Args.hasArg(OPT_fborland_extensions); 2331 Opts.WritableStrings = Args.hasArg(OPT_fwritable_strings); 2332 Opts.ConstStrings = Args.hasFlag(OPT_fconst_strings, OPT_fno_const_strings, 2333 Opts.ConstStrings); 2334 if (Args.hasArg(OPT_fno_lax_vector_conversions)) 2335 Opts.LaxVectorConversions = 0; 2336 if (Args.hasArg(OPT_fno_threadsafe_statics)) 2337 Opts.ThreadsafeStatics = 0; 2338 Opts.Exceptions = Args.hasArg(OPT_fexceptions); 2339 Opts.ObjCExceptions = Args.hasArg(OPT_fobjc_exceptions); 2340 Opts.CXXExceptions = Args.hasArg(OPT_fcxx_exceptions); 2341 2342 // -ffixed-point 2343 Opts.FixedPoint = 2344 Args.hasFlag(OPT_ffixed_point, OPT_fno_fixed_point, /*Default=*/false) && 2345 !Opts.CPlusPlus; 2346 Opts.PaddingOnUnsignedFixedPoint = 2347 Args.hasFlag(OPT_fpadding_on_unsigned_fixed_point, 2348 OPT_fno_padding_on_unsigned_fixed_point, 2349 /*Default=*/false) && 2350 Opts.FixedPoint; 2351 2352 // Handle exception personalities 2353 Arg *A = Args.getLastArg(options::OPT_fsjlj_exceptions, 2354 options::OPT_fseh_exceptions, 2355 options::OPT_fdwarf_exceptions); 2356 if (A) { 2357 const Option &Opt = A->getOption(); 2358 llvm::Triple T(TargetOpts.Triple); 2359 if (T.isWindowsMSVCEnvironment()) 2360 Diags.Report(diag::err_fe_invalid_exception_model) 2361 << Opt.getName() << T.str(); 2362 2363 Opts.SjLjExceptions = Opt.matches(options::OPT_fsjlj_exceptions); 2364 Opts.SEHExceptions = Opt.matches(options::OPT_fseh_exceptions); 2365 Opts.DWARFExceptions = Opt.matches(options::OPT_fdwarf_exceptions); 2366 } 2367 2368 Opts.ExternCNoUnwind = Args.hasArg(OPT_fexternc_nounwind); 2369 Opts.TraditionalCPP = Args.hasArg(OPT_traditional_cpp); 2370 2371 Opts.RTTI = Opts.CPlusPlus && !Args.hasArg(OPT_fno_rtti); 2372 Opts.RTTIData = Opts.RTTI && !Args.hasArg(OPT_fno_rtti_data); 2373 Opts.Blocks = Args.hasArg(OPT_fblocks) || (Opts.OpenCL 2374 && Opts.OpenCLVersion == 200); 2375 Opts.BlocksRuntimeOptional = Args.hasArg(OPT_fblocks_runtime_optional); 2376 Opts.CoroutinesTS = Args.hasArg(OPT_fcoroutines_ts); 2377 2378 // Enable [[]] attributes in C++11 by default. 2379 Opts.DoubleSquareBracketAttributes = 2380 Args.hasFlag(OPT_fdouble_square_bracket_attributes, 2381 OPT_fno_double_square_bracket_attributes, Opts.CPlusPlus11); 2382 2383 Opts.ModulesTS = Args.hasArg(OPT_fmodules_ts); 2384 Opts.Modules = Args.hasArg(OPT_fmodules) || Opts.ModulesTS; 2385 Opts.ModulesStrictDeclUse = Args.hasArg(OPT_fmodules_strict_decluse); 2386 Opts.ModulesDeclUse = 2387 Args.hasArg(OPT_fmodules_decluse) || Opts.ModulesStrictDeclUse; 2388 Opts.ModulesLocalVisibility = 2389 Args.hasArg(OPT_fmodules_local_submodule_visibility) || Opts.ModulesTS; 2390 Opts.ModulesCodegen = Args.hasArg(OPT_fmodules_codegen); 2391 Opts.ModulesDebugInfo = Args.hasArg(OPT_fmodules_debuginfo); 2392 Opts.ModulesSearchAll = Opts.Modules && 2393 !Args.hasArg(OPT_fno_modules_search_all) && 2394 Args.hasArg(OPT_fmodules_search_all); 2395 Opts.ModulesErrorRecovery = !Args.hasArg(OPT_fno_modules_error_recovery); 2396 Opts.ImplicitModules = !Args.hasArg(OPT_fno_implicit_modules); 2397 Opts.CharIsSigned = Opts.OpenCL || !Args.hasArg(OPT_fno_signed_char); 2398 Opts.WChar = Opts.CPlusPlus && !Args.hasArg(OPT_fno_wchar); 2399 Opts.Char8 = Args.hasArg(OPT_fchar8__t); 2400 if (const Arg *A = Args.getLastArg(OPT_fwchar_type_EQ)) { 2401 Opts.WCharSize = llvm::StringSwitch<unsigned>(A->getValue()) 2402 .Case("char", 1) 2403 .Case("short", 2) 2404 .Case("int", 4) 2405 .Default(0); 2406 if (Opts.WCharSize == 0) 2407 Diags.Report(diag::err_fe_invalid_wchar_type) << A->getValue(); 2408 } 2409 Opts.WCharIsSigned = Args.hasFlag(OPT_fsigned_wchar, OPT_fno_signed_wchar, true); 2410 Opts.ShortEnums = Args.hasArg(OPT_fshort_enums); 2411 Opts.Freestanding = Args.hasArg(OPT_ffreestanding); 2412 Opts.NoBuiltin = Args.hasArg(OPT_fno_builtin) || Opts.Freestanding; 2413 if (!Opts.NoBuiltin) 2414 getAllNoBuiltinFuncValues(Args, Opts.NoBuiltinFuncs); 2415 Opts.NoMathBuiltin = Args.hasArg(OPT_fno_math_builtin); 2416 Opts.RelaxedTemplateTemplateArgs = 2417 Args.hasArg(OPT_frelaxed_template_template_args); 2418 Opts.SizedDeallocation = Args.hasArg(OPT_fsized_deallocation); 2419 Opts.AlignedAllocation = 2420 Args.hasFlag(OPT_faligned_allocation, OPT_fno_aligned_allocation, 2421 Opts.AlignedAllocation); 2422 Opts.AlignedAllocationUnavailable = 2423 Opts.AlignedAllocation && Args.hasArg(OPT_aligned_alloc_unavailable); 2424 Opts.NewAlignOverride = 2425 getLastArgIntValue(Args, OPT_fnew_alignment_EQ, 0, Diags); 2426 if (Opts.NewAlignOverride && !llvm::isPowerOf2_32(Opts.NewAlignOverride)) { 2427 Arg *A = Args.getLastArg(OPT_fnew_alignment_EQ); 2428 Diags.Report(diag::err_fe_invalid_alignment) << A->getAsString(Args) 2429 << A->getValue(); 2430 Opts.NewAlignOverride = 0; 2431 } 2432 Opts.ConceptsTS = Args.hasArg(OPT_fconcepts_ts); 2433 Opts.HeinousExtensions = Args.hasArg(OPT_fheinous_gnu_extensions); 2434 Opts.AccessControl = !Args.hasArg(OPT_fno_access_control); 2435 Opts.ElideConstructors = !Args.hasArg(OPT_fno_elide_constructors); 2436 Opts.MathErrno = !Opts.OpenCL && Args.hasArg(OPT_fmath_errno); 2437 Opts.InstantiationDepth = 2438 getLastArgIntValue(Args, OPT_ftemplate_depth, 1024, Diags); 2439 Opts.ArrowDepth = 2440 getLastArgIntValue(Args, OPT_foperator_arrow_depth, 256, Diags); 2441 Opts.ConstexprCallDepth = 2442 getLastArgIntValue(Args, OPT_fconstexpr_depth, 512, Diags); 2443 Opts.ConstexprStepLimit = 2444 getLastArgIntValue(Args, OPT_fconstexpr_steps, 1048576, Diags); 2445 Opts.BracketDepth = getLastArgIntValue(Args, OPT_fbracket_depth, 256, Diags); 2446 Opts.DelayedTemplateParsing = Args.hasArg(OPT_fdelayed_template_parsing); 2447 Opts.NumLargeByValueCopy = 2448 getLastArgIntValue(Args, OPT_Wlarge_by_value_copy_EQ, 0, Diags); 2449 Opts.MSBitfields = Args.hasArg(OPT_mms_bitfields); 2450 Opts.ObjCConstantStringClass = 2451 Args.getLastArgValue(OPT_fconstant_string_class); 2452 Opts.ObjCDefaultSynthProperties = 2453 !Args.hasArg(OPT_disable_objc_default_synthesize_properties); 2454 Opts.EncodeExtendedBlockSig = 2455 Args.hasArg(OPT_fencode_extended_block_signature); 2456 Opts.EmitAllDecls = Args.hasArg(OPT_femit_all_decls); 2457 Opts.PackStruct = getLastArgIntValue(Args, OPT_fpack_struct_EQ, 0, Diags); 2458 Opts.MaxTypeAlign = getLastArgIntValue(Args, OPT_fmax_type_align_EQ, 0, Diags); 2459 Opts.AlignDouble = Args.hasArg(OPT_malign_double); 2460 Opts.PICLevel = getLastArgIntValue(Args, OPT_pic_level, 0, Diags); 2461 Opts.PIE = Args.hasArg(OPT_pic_is_pie); 2462 Opts.Static = Args.hasArg(OPT_static_define); 2463 Opts.DumpRecordLayoutsSimple = Args.hasArg(OPT_fdump_record_layouts_simple); 2464 Opts.DumpRecordLayouts = Opts.DumpRecordLayoutsSimple 2465 || Args.hasArg(OPT_fdump_record_layouts); 2466 Opts.DumpVTableLayouts = Args.hasArg(OPT_fdump_vtable_layouts); 2467 Opts.SpellChecking = !Args.hasArg(OPT_fno_spell_checking); 2468 Opts.NoBitFieldTypeAlign = Args.hasArg(OPT_fno_bitfield_type_align); 2469 Opts.SinglePrecisionConstants = Args.hasArg(OPT_cl_single_precision_constant); 2470 Opts.FastRelaxedMath = Args.hasArg(OPT_cl_fast_relaxed_math); 2471 Opts.HexagonQdsp6Compat = Args.hasArg(OPT_mqdsp6_compat); 2472 Opts.FakeAddressSpaceMap = Args.hasArg(OPT_ffake_address_space_map); 2473 Opts.ParseUnknownAnytype = Args.hasArg(OPT_funknown_anytype); 2474 Opts.DebuggerSupport = Args.hasArg(OPT_fdebugger_support); 2475 Opts.DebuggerCastResultToId = Args.hasArg(OPT_fdebugger_cast_result_to_id); 2476 Opts.DebuggerObjCLiteral = Args.hasArg(OPT_fdebugger_objc_literal); 2477 Opts.ApplePragmaPack = Args.hasArg(OPT_fapple_pragma_pack); 2478 Opts.ModuleName = Args.getLastArgValue(OPT_fmodule_name_EQ); 2479 Opts.CurrentModule = Opts.ModuleName; 2480 Opts.AppExt = Args.hasArg(OPT_fapplication_extension); 2481 Opts.ModuleFeatures = Args.getAllArgValues(OPT_fmodule_feature); 2482 llvm::sort(Opts.ModuleFeatures.begin(), Opts.ModuleFeatures.end()); 2483 Opts.NativeHalfType |= Args.hasArg(OPT_fnative_half_type); 2484 Opts.NativeHalfArgsAndReturns |= Args.hasArg(OPT_fnative_half_arguments_and_returns); 2485 // Enable HalfArgsAndReturns if present in Args or if NativeHalfArgsAndReturns 2486 // is enabled. 2487 Opts.HalfArgsAndReturns = Args.hasArg(OPT_fallow_half_arguments_and_returns) 2488 | Opts.NativeHalfArgsAndReturns; 2489 Opts.GNUAsm = !Args.hasArg(OPT_fno_gnu_inline_asm); 2490 2491 // __declspec is enabled by default for the PS4 by the driver, and also 2492 // enabled for Microsoft Extensions or Borland Extensions, here. 2493 // 2494 // FIXME: __declspec is also currently enabled for CUDA, but isn't really a 2495 // CUDA extension. However, it is required for supporting 2496 // __clang_cuda_builtin_vars.h, which uses __declspec(property). Once that has 2497 // been rewritten in terms of something more generic, remove the Opts.CUDA 2498 // term here. 2499 Opts.DeclSpecKeyword = 2500 Args.hasFlag(OPT_fdeclspec, OPT_fno_declspec, 2501 (Opts.MicrosoftExt || Opts.Borland || Opts.CUDA)); 2502 2503 if (Arg *A = Args.getLastArg(OPT_faddress_space_map_mangling_EQ)) { 2504 switch (llvm::StringSwitch<unsigned>(A->getValue()) 2505 .Case("target", LangOptions::ASMM_Target) 2506 .Case("no", LangOptions::ASMM_Off) 2507 .Case("yes", LangOptions::ASMM_On) 2508 .Default(255)) { 2509 default: 2510 Diags.Report(diag::err_drv_invalid_value) 2511 << "-faddress-space-map-mangling=" << A->getValue(); 2512 break; 2513 case LangOptions::ASMM_Target: 2514 Opts.setAddressSpaceMapMangling(LangOptions::ASMM_Target); 2515 break; 2516 case LangOptions::ASMM_On: 2517 Opts.setAddressSpaceMapMangling(LangOptions::ASMM_On); 2518 break; 2519 case LangOptions::ASMM_Off: 2520 Opts.setAddressSpaceMapMangling(LangOptions::ASMM_Off); 2521 break; 2522 } 2523 } 2524 2525 if (Arg *A = Args.getLastArg(OPT_fms_memptr_rep_EQ)) { 2526 LangOptions::PragmaMSPointersToMembersKind InheritanceModel = 2527 llvm::StringSwitch<LangOptions::PragmaMSPointersToMembersKind>( 2528 A->getValue()) 2529 .Case("single", 2530 LangOptions::PPTMK_FullGeneralitySingleInheritance) 2531 .Case("multiple", 2532 LangOptions::PPTMK_FullGeneralityMultipleInheritance) 2533 .Case("virtual", 2534 LangOptions::PPTMK_FullGeneralityVirtualInheritance) 2535 .Default(LangOptions::PPTMK_BestCase); 2536 if (InheritanceModel == LangOptions::PPTMK_BestCase) 2537 Diags.Report(diag::err_drv_invalid_value) 2538 << "-fms-memptr-rep=" << A->getValue(); 2539 2540 Opts.setMSPointerToMemberRepresentationMethod(InheritanceModel); 2541 } 2542 2543 // Check for MS default calling conventions being specified. 2544 if (Arg *A = Args.getLastArg(OPT_fdefault_calling_conv_EQ)) { 2545 LangOptions::DefaultCallingConvention DefaultCC = 2546 llvm::StringSwitch<LangOptions::DefaultCallingConvention>(A->getValue()) 2547 .Case("cdecl", LangOptions::DCC_CDecl) 2548 .Case("fastcall", LangOptions::DCC_FastCall) 2549 .Case("stdcall", LangOptions::DCC_StdCall) 2550 .Case("vectorcall", LangOptions::DCC_VectorCall) 2551 .Case("regcall", LangOptions::DCC_RegCall) 2552 .Default(LangOptions::DCC_None); 2553 if (DefaultCC == LangOptions::DCC_None) 2554 Diags.Report(diag::err_drv_invalid_value) 2555 << "-fdefault-calling-conv=" << A->getValue(); 2556 2557 llvm::Triple T(TargetOpts.Triple); 2558 llvm::Triple::ArchType Arch = T.getArch(); 2559 bool emitError = (DefaultCC == LangOptions::DCC_FastCall || 2560 DefaultCC == LangOptions::DCC_StdCall) && 2561 Arch != llvm::Triple::x86; 2562 emitError |= (DefaultCC == LangOptions::DCC_VectorCall || 2563 DefaultCC == LangOptions::DCC_RegCall) && 2564 !(Arch == llvm::Triple::x86 || Arch == llvm::Triple::x86_64); 2565 if (emitError) 2566 Diags.Report(diag::err_drv_argument_not_allowed_with) 2567 << A->getSpelling() << T.getTriple(); 2568 else 2569 Opts.setDefaultCallingConv(DefaultCC); 2570 } 2571 2572 // -mrtd option 2573 if (Arg *A = Args.getLastArg(OPT_mrtd)) { 2574 if (Opts.getDefaultCallingConv() != LangOptions::DCC_None) 2575 Diags.Report(diag::err_drv_argument_not_allowed_with) 2576 << A->getSpelling() << "-fdefault-calling-conv"; 2577 else { 2578 llvm::Triple T(TargetOpts.Triple); 2579 if (T.getArch() != llvm::Triple::x86) 2580 Diags.Report(diag::err_drv_argument_not_allowed_with) 2581 << A->getSpelling() << T.getTriple(); 2582 else 2583 Opts.setDefaultCallingConv(LangOptions::DCC_StdCall); 2584 } 2585 } 2586 2587 // Check if -fopenmp is specified. 2588 Opts.OpenMP = Args.hasArg(options::OPT_fopenmp) ? 1 : 0; 2589 // Check if -fopenmp-simd is specified. 2590 bool IsSimdSpecified = 2591 Args.hasFlag(options::OPT_fopenmp_simd, options::OPT_fno_openmp_simd, 2592 /*Default=*/false); 2593 Opts.OpenMPSimd = !Opts.OpenMP && IsSimdSpecified; 2594 Opts.OpenMPUseTLS = 2595 Opts.OpenMP && !Args.hasArg(options::OPT_fnoopenmp_use_tls); 2596 Opts.OpenMPIsDevice = 2597 Opts.OpenMP && Args.hasArg(options::OPT_fopenmp_is_device); 2598 2599 if (Opts.OpenMP || Opts.OpenMPSimd) { 2600 if (int Version = 2601 getLastArgIntValue(Args, OPT_fopenmp_version_EQ, 2602 IsSimdSpecified ? 45 : Opts.OpenMP, Diags)) 2603 Opts.OpenMP = Version; 2604 else if (IsSimdSpecified) 2605 Opts.OpenMP = 45; 2606 // Provide diagnostic when a given target is not expected to be an OpenMP 2607 // device or host. 2608 if (!Opts.OpenMPIsDevice) { 2609 switch (T.getArch()) { 2610 default: 2611 break; 2612 // Add unsupported host targets here: 2613 case llvm::Triple::nvptx: 2614 case llvm::Triple::nvptx64: 2615 Diags.Report(diag::err_drv_omp_host_target_not_supported) 2616 << TargetOpts.Triple; 2617 break; 2618 } 2619 } 2620 } 2621 2622 // Set the flag to prevent the implementation from emitting device exception 2623 // handling code for those requiring so. 2624 Opts.OpenMPHostCXXExceptions = Opts.Exceptions && Opts.CXXExceptions; 2625 if ((Opts.OpenMPIsDevice && T.isNVPTX()) || Opts.OpenCLCPlusPlus) { 2626 Opts.Exceptions = 0; 2627 Opts.CXXExceptions = 0; 2628 } 2629 2630 // Get the OpenMP target triples if any. 2631 if (Arg *A = Args.getLastArg(options::OPT_fopenmp_targets_EQ)) { 2632 2633 for (unsigned i = 0; i < A->getNumValues(); ++i) { 2634 llvm::Triple TT(A->getValue(i)); 2635 2636 if (TT.getArch() == llvm::Triple::UnknownArch || 2637 !(TT.getArch() == llvm::Triple::ppc || 2638 TT.getArch() == llvm::Triple::ppc64 || 2639 TT.getArch() == llvm::Triple::ppc64le || 2640 TT.getArch() == llvm::Triple::nvptx || 2641 TT.getArch() == llvm::Triple::nvptx64 || 2642 TT.getArch() == llvm::Triple::x86 || 2643 TT.getArch() == llvm::Triple::x86_64)) 2644 Diags.Report(diag::err_drv_invalid_omp_target) << A->getValue(i); 2645 else 2646 Opts.OMPTargetTriples.push_back(TT); 2647 } 2648 } 2649 2650 // Get OpenMP host file path if any and report if a non existent file is 2651 // found 2652 if (Arg *A = Args.getLastArg(options::OPT_fopenmp_host_ir_file_path)) { 2653 Opts.OMPHostIRFile = A->getValue(); 2654 if (!llvm::sys::fs::exists(Opts.OMPHostIRFile)) 2655 Diags.Report(diag::err_drv_omp_host_ir_file_not_found) 2656 << Opts.OMPHostIRFile; 2657 } 2658 2659 // set CUDA mode for OpenMP target NVPTX if specified in options 2660 Opts.OpenMPCUDAMode = Opts.OpenMPIsDevice && T.isNVPTX() && 2661 Args.hasArg(options::OPT_fopenmp_cuda_mode); 2662 2663 // Record whether the __DEPRECATED define was requested. 2664 Opts.Deprecated = Args.hasFlag(OPT_fdeprecated_macro, 2665 OPT_fno_deprecated_macro, 2666 Opts.Deprecated); 2667 2668 // FIXME: Eliminate this dependency. 2669 unsigned Opt = getOptimizationLevel(Args, IK, Diags), 2670 OptSize = getOptimizationLevelSize(Args); 2671 Opts.Optimize = Opt != 0; 2672 Opts.OptimizeSize = OptSize != 0; 2673 2674 // This is the __NO_INLINE__ define, which just depends on things like the 2675 // optimization level and -fno-inline, not actually whether the backend has 2676 // inlining enabled. 2677 Opts.NoInlineDefine = !Opts.Optimize; 2678 if (Arg *InlineArg = Args.getLastArg( 2679 options::OPT_finline_functions, options::OPT_finline_hint_functions, 2680 options::OPT_fno_inline_functions, options::OPT_fno_inline)) 2681 if (InlineArg->getOption().matches(options::OPT_fno_inline)) 2682 Opts.NoInlineDefine = true; 2683 2684 Opts.FastMath = Args.hasArg(OPT_ffast_math) || 2685 Args.hasArg(OPT_cl_fast_relaxed_math); 2686 Opts.FiniteMathOnly = Args.hasArg(OPT_ffinite_math_only) || 2687 Args.hasArg(OPT_cl_finite_math_only) || 2688 Args.hasArg(OPT_cl_fast_relaxed_math); 2689 Opts.UnsafeFPMath = Args.hasArg(OPT_menable_unsafe_fp_math) || 2690 Args.hasArg(OPT_cl_unsafe_math_optimizations) || 2691 Args.hasArg(OPT_cl_fast_relaxed_math); 2692 2693 if (Arg *A = Args.getLastArg(OPT_ffp_contract)) { 2694 StringRef Val = A->getValue(); 2695 if (Val == "fast") 2696 Opts.setDefaultFPContractMode(LangOptions::FPC_Fast); 2697 else if (Val == "on") 2698 Opts.setDefaultFPContractMode(LangOptions::FPC_On); 2699 else if (Val == "off") 2700 Opts.setDefaultFPContractMode(LangOptions::FPC_Off); 2701 else 2702 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Val; 2703 } 2704 2705 Opts.RetainCommentsFromSystemHeaders = 2706 Args.hasArg(OPT_fretain_comments_from_system_headers); 2707 2708 unsigned SSP = getLastArgIntValue(Args, OPT_stack_protector, 0, Diags); 2709 switch (SSP) { 2710 default: 2711 Diags.Report(diag::err_drv_invalid_value) 2712 << Args.getLastArg(OPT_stack_protector)->getAsString(Args) << SSP; 2713 break; 2714 case 0: Opts.setStackProtector(LangOptions::SSPOff); break; 2715 case 1: Opts.setStackProtector(LangOptions::SSPOn); break; 2716 case 2: Opts.setStackProtector(LangOptions::SSPStrong); break; 2717 case 3: Opts.setStackProtector(LangOptions::SSPReq); break; 2718 } 2719 2720 // Parse -fsanitize= arguments. 2721 parseSanitizerKinds("-fsanitize=", Args.getAllArgValues(OPT_fsanitize_EQ), 2722 Diags, Opts.Sanitize); 2723 // -fsanitize-address-field-padding=N has to be a LangOpt, parse it here. 2724 Opts.SanitizeAddressFieldPadding = 2725 getLastArgIntValue(Args, OPT_fsanitize_address_field_padding, 0, Diags); 2726 Opts.SanitizerBlacklistFiles = Args.getAllArgValues(OPT_fsanitize_blacklist); 2727 2728 // -fxray-instrument 2729 Opts.XRayInstrument = 2730 Args.hasFlag(OPT_fxray_instrument, OPT_fnoxray_instrument, false); 2731 2732 // -fxray-always-emit-customevents 2733 Opts.XRayAlwaysEmitCustomEvents = 2734 Args.hasFlag(OPT_fxray_always_emit_customevents, 2735 OPT_fnoxray_always_emit_customevents, false); 2736 2737 // -fxray-always-emit-typedevents 2738 Opts.XRayAlwaysEmitTypedEvents = 2739 Args.hasFlag(OPT_fxray_always_emit_typedevents, 2740 OPT_fnoxray_always_emit_customevents, false); 2741 2742 // -fxray-{always,never}-instrument= filenames. 2743 Opts.XRayAlwaysInstrumentFiles = 2744 Args.getAllArgValues(OPT_fxray_always_instrument); 2745 Opts.XRayNeverInstrumentFiles = 2746 Args.getAllArgValues(OPT_fxray_never_instrument); 2747 Opts.XRayAttrListFiles = Args.getAllArgValues(OPT_fxray_attr_list); 2748 2749 // -fforce-emit-vtables 2750 Opts.ForceEmitVTables = Args.hasArg(OPT_fforce_emit_vtables); 2751 2752 // -fallow-editor-placeholders 2753 Opts.AllowEditorPlaceholders = Args.hasArg(OPT_fallow_editor_placeholders); 2754 2755 if (Arg *A = Args.getLastArg(OPT_fclang_abi_compat_EQ)) { 2756 Opts.setClangABICompat(LangOptions::ClangABI::Latest); 2757 2758 StringRef Ver = A->getValue(); 2759 std::pair<StringRef, StringRef> VerParts = Ver.split('.'); 2760 unsigned Major, Minor = 0; 2761 2762 // Check the version number is valid: either 3.x (0 <= x <= 9) or 2763 // y or y.0 (4 <= y <= current version). 2764 if (!VerParts.first.startswith("0") && 2765 !VerParts.first.getAsInteger(10, Major) && 2766 3 <= Major && Major <= CLANG_VERSION_MAJOR && 2767 (Major == 3 ? VerParts.second.size() == 1 && 2768 !VerParts.second.getAsInteger(10, Minor) 2769 : VerParts.first.size() == Ver.size() || 2770 VerParts.second == "0")) { 2771 // Got a valid version number. 2772 if (Major == 3 && Minor <= 8) 2773 Opts.setClangABICompat(LangOptions::ClangABI::Ver3_8); 2774 else if (Major <= 4) 2775 Opts.setClangABICompat(LangOptions::ClangABI::Ver4); 2776 else if (Major <= 6) 2777 Opts.setClangABICompat(LangOptions::ClangABI::Ver6); 2778 } else if (Ver != "latest") { 2779 Diags.Report(diag::err_drv_invalid_value) 2780 << A->getAsString(Args) << A->getValue(); 2781 } 2782 } 2783 2784 Opts.CompleteMemberPointers = Args.hasArg(OPT_fcomplete_member_pointers); 2785 Opts.BuildingPCHWithObjectFile = Args.hasArg(OPT_building_pch_with_obj); 2786 } 2787 2788 static bool isStrictlyPreprocessorAction(frontend::ActionKind Action) { 2789 switch (Action) { 2790 case frontend::ASTDeclList: 2791 case frontend::ASTDump: 2792 case frontend::ASTPrint: 2793 case frontend::ASTView: 2794 case frontend::EmitAssembly: 2795 case frontend::EmitBC: 2796 case frontend::EmitHTML: 2797 case frontend::EmitLLVM: 2798 case frontend::EmitLLVMOnly: 2799 case frontend::EmitCodeGenOnly: 2800 case frontend::EmitObj: 2801 case frontend::FixIt: 2802 case frontend::GenerateModule: 2803 case frontend::GenerateModuleInterface: 2804 case frontend::GeneratePCH: 2805 case frontend::GeneratePTH: 2806 case frontend::ParseSyntaxOnly: 2807 case frontend::ModuleFileInfo: 2808 case frontend::VerifyPCH: 2809 case frontend::PluginAction: 2810 case frontend::PrintDeclContext: 2811 case frontend::RewriteObjC: 2812 case frontend::RewriteTest: 2813 case frontend::RunAnalysis: 2814 case frontend::TemplightDump: 2815 case frontend::MigrateSource: 2816 return false; 2817 2818 case frontend::DumpCompilerOptions: 2819 case frontend::DumpRawTokens: 2820 case frontend::DumpTokens: 2821 case frontend::InitOnly: 2822 case frontend::PrintPreamble: 2823 case frontend::PrintPreprocessedInput: 2824 case frontend::RewriteMacros: 2825 case frontend::RunPreprocessorOnly: 2826 return true; 2827 } 2828 llvm_unreachable("invalid frontend action"); 2829 } 2830 2831 static void ParsePreprocessorArgs(PreprocessorOptions &Opts, ArgList &Args, 2832 DiagnosticsEngine &Diags, 2833 frontend::ActionKind Action) { 2834 Opts.ImplicitPCHInclude = Args.getLastArgValue(OPT_include_pch); 2835 Opts.ImplicitPTHInclude = Args.getLastArgValue(OPT_include_pth); 2836 Opts.PCHThroughHeader = Args.getLastArgValue(OPT_pch_through_header_EQ); 2837 if (const Arg *A = Args.getLastArg(OPT_token_cache)) 2838 Opts.TokenCache = A->getValue(); 2839 else 2840 Opts.TokenCache = Opts.ImplicitPTHInclude; 2841 Opts.UsePredefines = !Args.hasArg(OPT_undef); 2842 Opts.DetailedRecord = Args.hasArg(OPT_detailed_preprocessing_record); 2843 Opts.DisablePCHValidation = Args.hasArg(OPT_fno_validate_pch); 2844 Opts.AllowPCHWithCompilerErrors = Args.hasArg(OPT_fallow_pch_with_errors); 2845 2846 Opts.DumpDeserializedPCHDecls = Args.hasArg(OPT_dump_deserialized_pch_decls); 2847 for (const auto *A : Args.filtered(OPT_error_on_deserialized_pch_decl)) 2848 Opts.DeserializedPCHDeclsToErrorOn.insert(A->getValue()); 2849 2850 if (const Arg *A = Args.getLastArg(OPT_preamble_bytes_EQ)) { 2851 StringRef Value(A->getValue()); 2852 size_t Comma = Value.find(','); 2853 unsigned Bytes = 0; 2854 unsigned EndOfLine = 0; 2855 2856 if (Comma == StringRef::npos || 2857 Value.substr(0, Comma).getAsInteger(10, Bytes) || 2858 Value.substr(Comma + 1).getAsInteger(10, EndOfLine)) 2859 Diags.Report(diag::err_drv_preamble_format); 2860 else { 2861 Opts.PrecompiledPreambleBytes.first = Bytes; 2862 Opts.PrecompiledPreambleBytes.second = (EndOfLine != 0); 2863 } 2864 } 2865 2866 // Add the __CET__ macro if a CFProtection option is set. 2867 if (const Arg *A = Args.getLastArg(OPT_fcf_protection_EQ)) { 2868 StringRef Name = A->getValue(); 2869 if (Name == "branch") 2870 Opts.addMacroDef("__CET__=1"); 2871 else if (Name == "return") 2872 Opts.addMacroDef("__CET__=2"); 2873 else if (Name == "full") 2874 Opts.addMacroDef("__CET__=3"); 2875 } 2876 2877 // Add macros from the command line. 2878 for (const auto *A : Args.filtered(OPT_D, OPT_U)) { 2879 if (A->getOption().matches(OPT_D)) 2880 Opts.addMacroDef(A->getValue()); 2881 else 2882 Opts.addMacroUndef(A->getValue()); 2883 } 2884 2885 Opts.MacroIncludes = Args.getAllArgValues(OPT_imacros); 2886 2887 // Add the ordered list of -includes. 2888 for (const auto *A : Args.filtered(OPT_include)) 2889 Opts.Includes.emplace_back(A->getValue()); 2890 2891 for (const auto *A : Args.filtered(OPT_chain_include)) 2892 Opts.ChainedIncludes.emplace_back(A->getValue()); 2893 2894 for (const auto *A : Args.filtered(OPT_remap_file)) { 2895 std::pair<StringRef, StringRef> Split = StringRef(A->getValue()).split(';'); 2896 2897 if (Split.second.empty()) { 2898 Diags.Report(diag::err_drv_invalid_remap_file) << A->getAsString(Args); 2899 continue; 2900 } 2901 2902 Opts.addRemappedFile(Split.first, Split.second); 2903 } 2904 2905 if (Arg *A = Args.getLastArg(OPT_fobjc_arc_cxxlib_EQ)) { 2906 StringRef Name = A->getValue(); 2907 unsigned Library = llvm::StringSwitch<unsigned>(Name) 2908 .Case("libc++", ARCXX_libcxx) 2909 .Case("libstdc++", ARCXX_libstdcxx) 2910 .Case("none", ARCXX_nolib) 2911 .Default(~0U); 2912 if (Library == ~0U) 2913 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Name; 2914 else 2915 Opts.ObjCXXARCStandardLibrary = (ObjCXXARCStandardLibraryKind)Library; 2916 } 2917 2918 // Always avoid lexing editor placeholders when we're just running the 2919 // preprocessor as we never want to emit the 2920 // "editor placeholder in source file" error in PP only mode. 2921 if (isStrictlyPreprocessorAction(Action)) 2922 Opts.LexEditorPlaceholders = false; 2923 } 2924 2925 static void ParsePreprocessorOutputArgs(PreprocessorOutputOptions &Opts, 2926 ArgList &Args, 2927 frontend::ActionKind Action) { 2928 if (isStrictlyPreprocessorAction(Action)) 2929 Opts.ShowCPP = !Args.hasArg(OPT_dM); 2930 else 2931 Opts.ShowCPP = 0; 2932 2933 Opts.ShowComments = Args.hasArg(OPT_C); 2934 Opts.ShowLineMarkers = !Args.hasArg(OPT_P); 2935 Opts.ShowMacroComments = Args.hasArg(OPT_CC); 2936 Opts.ShowMacros = Args.hasArg(OPT_dM) || Args.hasArg(OPT_dD); 2937 Opts.ShowIncludeDirectives = Args.hasArg(OPT_dI); 2938 Opts.RewriteIncludes = Args.hasArg(OPT_frewrite_includes); 2939 Opts.RewriteImports = Args.hasArg(OPT_frewrite_imports); 2940 Opts.UseLineDirectives = Args.hasArg(OPT_fuse_line_directives); 2941 } 2942 2943 static void ParseTargetArgs(TargetOptions &Opts, ArgList &Args, 2944 DiagnosticsEngine &Diags) { 2945 Opts.ABI = Args.getLastArgValue(OPT_target_abi); 2946 if (Arg *A = Args.getLastArg(OPT_meabi)) { 2947 StringRef Value = A->getValue(); 2948 llvm::EABI EABIVersion = llvm::StringSwitch<llvm::EABI>(Value) 2949 .Case("default", llvm::EABI::Default) 2950 .Case("4", llvm::EABI::EABI4) 2951 .Case("5", llvm::EABI::EABI5) 2952 .Case("gnu", llvm::EABI::GNU) 2953 .Default(llvm::EABI::Unknown); 2954 if (EABIVersion == llvm::EABI::Unknown) 2955 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) 2956 << Value; 2957 else 2958 Opts.EABIVersion = EABIVersion; 2959 } 2960 Opts.CPU = Args.getLastArgValue(OPT_target_cpu); 2961 Opts.FPMath = Args.getLastArgValue(OPT_mfpmath); 2962 Opts.FeaturesAsWritten = Args.getAllArgValues(OPT_target_feature); 2963 Opts.LinkerVersion = Args.getLastArgValue(OPT_target_linker_version); 2964 Opts.Triple = Args.getLastArgValue(OPT_triple); 2965 // Use the default target triple if unspecified. 2966 if (Opts.Triple.empty()) 2967 Opts.Triple = llvm::sys::getDefaultTargetTriple(); 2968 Opts.Triple = llvm::Triple::normalize(Opts.Triple); 2969 Opts.OpenCLExtensionsAsWritten = Args.getAllArgValues(OPT_cl_ext_EQ); 2970 Opts.ForceEnableInt128 = Args.hasArg(OPT_fforce_enable_int128); 2971 Opts.NVPTXUseShortPointers = Args.hasFlag( 2972 options::OPT_fcuda_short_ptr, options::OPT_fno_cuda_short_ptr, false); 2973 } 2974 2975 bool CompilerInvocation::CreateFromArgs(CompilerInvocation &Res, 2976 const char *const *ArgBegin, 2977 const char *const *ArgEnd, 2978 DiagnosticsEngine &Diags) { 2979 bool Success = true; 2980 2981 // Parse the arguments. 2982 std::unique_ptr<OptTable> Opts = createDriverOptTable(); 2983 const unsigned IncludedFlagsBitmask = options::CC1Option; 2984 unsigned MissingArgIndex, MissingArgCount; 2985 InputArgList Args = 2986 Opts->ParseArgs(llvm::makeArrayRef(ArgBegin, ArgEnd), MissingArgIndex, 2987 MissingArgCount, IncludedFlagsBitmask); 2988 LangOptions &LangOpts = *Res.getLangOpts(); 2989 2990 // Check for missing argument error. 2991 if (MissingArgCount) { 2992 Diags.Report(diag::err_drv_missing_argument) 2993 << Args.getArgString(MissingArgIndex) << MissingArgCount; 2994 Success = false; 2995 } 2996 2997 // Issue errors on unknown arguments. 2998 for (const auto *A : Args.filtered(OPT_UNKNOWN)) { 2999 auto ArgString = A->getAsString(Args); 3000 std::string Nearest; 3001 if (Opts->findNearest(ArgString, Nearest, IncludedFlagsBitmask) > 1) 3002 Diags.Report(diag::err_drv_unknown_argument) << ArgString; 3003 else 3004 Diags.Report(diag::err_drv_unknown_argument_with_suggestion) 3005 << ArgString << Nearest; 3006 Success = false; 3007 } 3008 3009 Success &= ParseAnalyzerArgs(*Res.getAnalyzerOpts(), Args, Diags); 3010 Success &= ParseMigratorArgs(Res.getMigratorOpts(), Args); 3011 ParseDependencyOutputArgs(Res.getDependencyOutputOpts(), Args); 3012 Success &= 3013 ParseDiagnosticArgs(Res.getDiagnosticOpts(), Args, &Diags, 3014 false /*DefaultDiagColor*/, false /*DefaultShowOpt*/); 3015 ParseCommentArgs(LangOpts.CommentOpts, Args); 3016 ParseFileSystemArgs(Res.getFileSystemOpts(), Args); 3017 // FIXME: We shouldn't have to pass the DashX option around here 3018 InputKind DashX = ParseFrontendArgs(Res.getFrontendOpts(), Args, Diags, 3019 LangOpts.IsHeaderFile); 3020 ParseTargetArgs(Res.getTargetOpts(), Args, Diags); 3021 Success &= ParseCodeGenArgs(Res.getCodeGenOpts(), Args, DashX, Diags, 3022 Res.getTargetOpts(), Res.getFrontendOpts()); 3023 ParseHeaderSearchArgs(Res.getHeaderSearchOpts(), Args, 3024 Res.getFileSystemOpts().WorkingDir); 3025 if (DashX.getFormat() == InputKind::Precompiled || 3026 DashX.getLanguage() == InputKind::LLVM_IR) { 3027 // ObjCAAutoRefCount and Sanitize LangOpts are used to setup the 3028 // PassManager in BackendUtil.cpp. They need to be initializd no matter 3029 // what the input type is. 3030 if (Args.hasArg(OPT_fobjc_arc)) 3031 LangOpts.ObjCAutoRefCount = 1; 3032 // PIClevel and PIELevel are needed during code generation and this should be 3033 // set regardless of the input type. 3034 LangOpts.PICLevel = getLastArgIntValue(Args, OPT_pic_level, 0, Diags); 3035 LangOpts.PIE = Args.hasArg(OPT_pic_is_pie); 3036 parseSanitizerKinds("-fsanitize=", Args.getAllArgValues(OPT_fsanitize_EQ), 3037 Diags, LangOpts.Sanitize); 3038 } else { 3039 // Other LangOpts are only initialzed when the input is not AST or LLVM IR. 3040 // FIXME: Should we really be calling this for an InputKind::Asm input? 3041 ParseLangArgs(LangOpts, Args, DashX, Res.getTargetOpts(), 3042 Res.getPreprocessorOpts(), Diags); 3043 if (Res.getFrontendOpts().ProgramAction == frontend::RewriteObjC) 3044 LangOpts.ObjCExceptions = 1; 3045 } 3046 3047 LangOpts.FunctionAlignment = 3048 getLastArgIntValue(Args, OPT_function_alignment, 0, Diags); 3049 3050 if (LangOpts.CUDA) { 3051 // During CUDA device-side compilation, the aux triple is the 3052 // triple used for host compilation. 3053 if (LangOpts.CUDAIsDevice) 3054 Res.getTargetOpts().HostTriple = Res.getFrontendOpts().AuxTriple; 3055 } 3056 3057 // Set the triple of the host for OpenMP device compile. 3058 if (LangOpts.OpenMPIsDevice) 3059 Res.getTargetOpts().HostTriple = Res.getFrontendOpts().AuxTriple; 3060 3061 // FIXME: Override value name discarding when asan or msan is used because the 3062 // backend passes depend on the name of the alloca in order to print out 3063 // names. 3064 Res.getCodeGenOpts().DiscardValueNames &= 3065 !LangOpts.Sanitize.has(SanitizerKind::Address) && 3066 !LangOpts.Sanitize.has(SanitizerKind::Memory); 3067 3068 ParsePreprocessorArgs(Res.getPreprocessorOpts(), Args, Diags, 3069 Res.getFrontendOpts().ProgramAction); 3070 ParsePreprocessorOutputArgs(Res.getPreprocessorOutputOpts(), Args, 3071 Res.getFrontendOpts().ProgramAction); 3072 3073 // Turn on -Wspir-compat for SPIR target. 3074 llvm::Triple T(Res.getTargetOpts().Triple); 3075 auto Arch = T.getArch(); 3076 if (Arch == llvm::Triple::spir || Arch == llvm::Triple::spir64) { 3077 Res.getDiagnosticOpts().Warnings.push_back("spir-compat"); 3078 } 3079 3080 // If sanitizer is enabled, disable OPT_ffine_grained_bitfield_accesses. 3081 if (Res.getCodeGenOpts().FineGrainedBitfieldAccesses && 3082 !Res.getLangOpts()->Sanitize.empty()) { 3083 Res.getCodeGenOpts().FineGrainedBitfieldAccesses = false; 3084 Diags.Report(diag::warn_drv_fine_grained_bitfield_accesses_ignored); 3085 } 3086 return Success; 3087 } 3088 3089 std::string CompilerInvocation::getModuleHash() const { 3090 // Note: For QoI reasons, the things we use as a hash here should all be 3091 // dumped via the -module-info flag. 3092 using llvm::hash_code; 3093 using llvm::hash_value; 3094 using llvm::hash_combine; 3095 3096 // Start the signature with the compiler version. 3097 // FIXME: We'd rather use something more cryptographically sound than 3098 // CityHash, but this will do for now. 3099 hash_code code = hash_value(getClangFullRepositoryVersion()); 3100 3101 // Extend the signature with the language options 3102 #define LANGOPT(Name, Bits, Default, Description) \ 3103 code = hash_combine(code, LangOpts->Name); 3104 #define ENUM_LANGOPT(Name, Type, Bits, Default, Description) \ 3105 code = hash_combine(code, static_cast<unsigned>(LangOpts->get##Name())); 3106 #define BENIGN_LANGOPT(Name, Bits, Default, Description) 3107 #define BENIGN_ENUM_LANGOPT(Name, Type, Bits, Default, Description) 3108 #include "clang/Basic/LangOptions.def" 3109 3110 for (StringRef Feature : LangOpts->ModuleFeatures) 3111 code = hash_combine(code, Feature); 3112 3113 // Extend the signature with the target options. 3114 code = hash_combine(code, TargetOpts->Triple, TargetOpts->CPU, 3115 TargetOpts->ABI); 3116 for (const auto &FeatureAsWritten : TargetOpts->FeaturesAsWritten) 3117 code = hash_combine(code, FeatureAsWritten); 3118 3119 // Extend the signature with preprocessor options. 3120 const PreprocessorOptions &ppOpts = getPreprocessorOpts(); 3121 const HeaderSearchOptions &hsOpts = getHeaderSearchOpts(); 3122 code = hash_combine(code, ppOpts.UsePredefines, ppOpts.DetailedRecord); 3123 3124 for (const auto &I : getPreprocessorOpts().Macros) { 3125 // If we're supposed to ignore this macro for the purposes of modules, 3126 // don't put it into the hash. 3127 if (!hsOpts.ModulesIgnoreMacros.empty()) { 3128 // Check whether we're ignoring this macro. 3129 StringRef MacroDef = I.first; 3130 if (hsOpts.ModulesIgnoreMacros.count( 3131 llvm::CachedHashString(MacroDef.split('=').first))) 3132 continue; 3133 } 3134 3135 code = hash_combine(code, I.first, I.second); 3136 } 3137 3138 // Extend the signature with the sysroot and other header search options. 3139 code = hash_combine(code, hsOpts.Sysroot, 3140 hsOpts.ModuleFormat, 3141 hsOpts.UseDebugInfo, 3142 hsOpts.UseBuiltinIncludes, 3143 hsOpts.UseStandardSystemIncludes, 3144 hsOpts.UseStandardCXXIncludes, 3145 hsOpts.UseLibcxx, 3146 hsOpts.ModulesValidateDiagnosticOptions); 3147 code = hash_combine(code, hsOpts.ResourceDir); 3148 3149 // Extend the signature with the user build path. 3150 code = hash_combine(code, hsOpts.ModuleUserBuildPath); 3151 3152 // Extend the signature with the module file extensions. 3153 const FrontendOptions &frontendOpts = getFrontendOpts(); 3154 for (const auto &ext : frontendOpts.ModuleFileExtensions) { 3155 code = ext->hashExtension(code); 3156 } 3157 3158 // Extend the signature with the enabled sanitizers, if at least one is 3159 // enabled. Sanitizers which cannot affect AST generation aren't hashed. 3160 SanitizerSet SanHash = LangOpts->Sanitize; 3161 SanHash.clear(getPPTransparentSanitizers()); 3162 if (!SanHash.empty()) 3163 code = hash_combine(code, SanHash.Mask); 3164 3165 return llvm::APInt(64, code).toString(36, /*Signed=*/false); 3166 } 3167 3168 template<typename IntTy> 3169 static IntTy getLastArgIntValueImpl(const ArgList &Args, OptSpecifier Id, 3170 IntTy Default, 3171 DiagnosticsEngine *Diags) { 3172 IntTy Res = Default; 3173 if (Arg *A = Args.getLastArg(Id)) { 3174 if (StringRef(A->getValue()).getAsInteger(10, Res)) { 3175 if (Diags) 3176 Diags->Report(diag::err_drv_invalid_int_value) << A->getAsString(Args) 3177 << A->getValue(); 3178 } 3179 } 3180 return Res; 3181 } 3182 3183 namespace clang { 3184 3185 // Declared in clang/Frontend/Utils.h. 3186 int getLastArgIntValue(const ArgList &Args, OptSpecifier Id, int Default, 3187 DiagnosticsEngine *Diags) { 3188 return getLastArgIntValueImpl<int>(Args, Id, Default, Diags); 3189 } 3190 3191 uint64_t getLastArgUInt64Value(const ArgList &Args, OptSpecifier Id, 3192 uint64_t Default, 3193 DiagnosticsEngine *Diags) { 3194 return getLastArgIntValueImpl<uint64_t>(Args, Id, Default, Diags); 3195 } 3196 3197 void BuryPointer(const void *Ptr) { 3198 // This function may be called only a small fixed amount of times per each 3199 // invocation, otherwise we do actually have a leak which we want to report. 3200 // If this function is called more than kGraveYardMaxSize times, the pointers 3201 // will not be properly buried and a leak detector will report a leak, which 3202 // is what we want in such case. 3203 static const size_t kGraveYardMaxSize = 16; 3204 LLVM_ATTRIBUTE_UNUSED static const void *GraveYard[kGraveYardMaxSize]; 3205 static std::atomic<unsigned> GraveYardSize; 3206 unsigned Idx = GraveYardSize++; 3207 if (Idx >= kGraveYardMaxSize) 3208 return; 3209 GraveYard[Idx] = Ptr; 3210 } 3211 3212 IntrusiveRefCntPtr<vfs::FileSystem> 3213 createVFSFromCompilerInvocation(const CompilerInvocation &CI, 3214 DiagnosticsEngine &Diags) { 3215 return createVFSFromCompilerInvocation(CI, Diags, vfs::getRealFileSystem()); 3216 } 3217 3218 IntrusiveRefCntPtr<vfs::FileSystem> 3219 createVFSFromCompilerInvocation(const CompilerInvocation &CI, 3220 DiagnosticsEngine &Diags, 3221 IntrusiveRefCntPtr<vfs::FileSystem> BaseFS) { 3222 if (CI.getHeaderSearchOpts().VFSOverlayFiles.empty()) 3223 return BaseFS; 3224 3225 IntrusiveRefCntPtr<vfs::OverlayFileSystem> Overlay( 3226 new vfs::OverlayFileSystem(BaseFS)); 3227 // earlier vfs files are on the bottom 3228 for (const auto &File : CI.getHeaderSearchOpts().VFSOverlayFiles) { 3229 llvm::ErrorOr<std::unique_ptr<llvm::MemoryBuffer>> Buffer = 3230 BaseFS->getBufferForFile(File); 3231 if (!Buffer) { 3232 Diags.Report(diag::err_missing_vfs_overlay_file) << File; 3233 continue; 3234 } 3235 3236 IntrusiveRefCntPtr<vfs::FileSystem> FS = vfs::getVFSFromYAML( 3237 std::move(Buffer.get()), /*DiagHandler*/ nullptr, File); 3238 if (FS) 3239 Overlay->pushOverlay(FS); 3240 else 3241 Diags.Report(diag::err_invalid_vfs_overlay) << File; 3242 } 3243 return Overlay; 3244 } 3245 3246 } // namespace clang 3247