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