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.UniformWGSize = 663 Args.hasArg(OPT_cl_uniform_work_group_size); 664 Opts.Reciprocals = Args.getAllArgValues(OPT_mrecip_EQ); 665 Opts.ReciprocalMath = Args.hasArg(OPT_freciprocal_math); 666 Opts.NoTrappingMath = Args.hasArg(OPT_fno_trapping_math); 667 Opts.NoZeroInitializedInBSS = Args.hasArg(OPT_mno_zero_initialized_in_bss); 668 Opts.BackendOptions = Args.getAllArgValues(OPT_backend_option); 669 Opts.NumRegisterParameters = getLastArgIntValue(Args, OPT_mregparm, 0, Diags); 670 Opts.NoExecStack = Args.hasArg(OPT_mno_exec_stack); 671 Opts.FatalWarnings = Args.hasArg(OPT_massembler_fatal_warnings); 672 Opts.EnableSegmentedStacks = Args.hasArg(OPT_split_stacks); 673 Opts.RelaxAll = Args.hasArg(OPT_mrelax_all); 674 Opts.IncrementalLinkerCompatible = 675 Args.hasArg(OPT_mincremental_linker_compatible); 676 Opts.PIECopyRelocations = 677 Args.hasArg(OPT_mpie_copy_relocations); 678 Opts.NoPLT = Args.hasArg(OPT_fno_plt); 679 Opts.OmitLeafFramePointer = Args.hasArg(OPT_momit_leaf_frame_pointer); 680 Opts.SaveTempLabels = Args.hasArg(OPT_msave_temp_labels); 681 Opts.NoDwarfDirectoryAsm = Args.hasArg(OPT_fno_dwarf_directory_asm); 682 Opts.SoftFloat = Args.hasArg(OPT_msoft_float); 683 Opts.StrictEnums = Args.hasArg(OPT_fstrict_enums); 684 Opts.StrictReturn = !Args.hasArg(OPT_fno_strict_return); 685 Opts.StrictVTablePointers = Args.hasArg(OPT_fstrict_vtable_pointers); 686 Opts.UnsafeFPMath = Args.hasArg(OPT_menable_unsafe_fp_math) || 687 Args.hasArg(OPT_cl_unsafe_math_optimizations) || 688 Args.hasArg(OPT_cl_fast_relaxed_math); 689 Opts.UnwindTables = Args.hasArg(OPT_munwind_tables); 690 Opts.RelocationModel = getRelocModel(Args, Diags); 691 Opts.ThreadModel = Args.getLastArgValue(OPT_mthread_model, "posix"); 692 if (Opts.ThreadModel != "posix" && Opts.ThreadModel != "single") 693 Diags.Report(diag::err_drv_invalid_value) 694 << Args.getLastArg(OPT_mthread_model)->getAsString(Args) 695 << Opts.ThreadModel; 696 Opts.TrapFuncName = Args.getLastArgValue(OPT_ftrap_function_EQ); 697 Opts.UseInitArray = Args.hasArg(OPT_fuse_init_array); 698 699 Opts.FunctionSections = Args.hasFlag(OPT_ffunction_sections, 700 OPT_fno_function_sections, false); 701 Opts.DataSections = Args.hasFlag(OPT_fdata_sections, 702 OPT_fno_data_sections, false); 703 Opts.StackSizeSection = 704 Args.hasFlag(OPT_fstack_size_section, OPT_fno_stack_size_section, false); 705 Opts.UniqueSectionNames = Args.hasFlag(OPT_funique_section_names, 706 OPT_fno_unique_section_names, true); 707 708 Opts.MergeFunctions = Args.hasArg(OPT_fmerge_functions); 709 710 Opts.NoUseJumpTables = Args.hasArg(OPT_fno_jump_tables); 711 712 Opts.ProfileSampleAccurate = Args.hasArg(OPT_fprofile_sample_accurate); 713 714 Opts.PrepareForLTO = Args.hasArg(OPT_flto, OPT_flto_EQ); 715 Opts.EmitSummaryIndex = false; 716 if (Arg *A = Args.getLastArg(OPT_flto_EQ)) { 717 StringRef S = A->getValue(); 718 if (S == "thin") 719 Opts.EmitSummaryIndex = true; 720 else if (S != "full") 721 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << S; 722 } 723 Opts.LTOUnit = Args.hasFlag(OPT_flto_unit, OPT_fno_lto_unit, false); 724 if (Arg *A = Args.getLastArg(OPT_fthinlto_index_EQ)) { 725 if (IK.getLanguage() != InputKind::LLVM_IR) 726 Diags.Report(diag::err_drv_argument_only_allowed_with) 727 << A->getAsString(Args) << "-x ir"; 728 Opts.ThinLTOIndexFile = Args.getLastArgValue(OPT_fthinlto_index_EQ); 729 } 730 Opts.ThinLinkBitcodeFile = Args.getLastArgValue(OPT_fthin_link_bitcode_EQ); 731 732 Opts.MSVolatile = Args.hasArg(OPT_fms_volatile); 733 734 Opts.VectorizeLoop = Args.hasArg(OPT_vectorize_loops); 735 Opts.VectorizeSLP = Args.hasArg(OPT_vectorize_slp); 736 737 Opts.PreferVectorWidth = Args.getLastArgValue(OPT_mprefer_vector_width_EQ); 738 739 Opts.MainFileName = Args.getLastArgValue(OPT_main_file_name); 740 Opts.VerifyModule = !Args.hasArg(OPT_disable_llvm_verifier); 741 742 Opts.ControlFlowGuard = Args.hasArg(OPT_cfguard); 743 744 Opts.DisableGCov = Args.hasArg(OPT_test_coverage); 745 Opts.EmitGcovArcs = Args.hasArg(OPT_femit_coverage_data); 746 Opts.EmitGcovNotes = Args.hasArg(OPT_femit_coverage_notes); 747 if (Opts.EmitGcovArcs || Opts.EmitGcovNotes) { 748 Opts.CoverageDataFile = Args.getLastArgValue(OPT_coverage_data_file); 749 Opts.CoverageNotesFile = Args.getLastArgValue(OPT_coverage_notes_file); 750 Opts.CoverageExtraChecksum = Args.hasArg(OPT_coverage_cfg_checksum); 751 Opts.CoverageNoFunctionNamesInData = 752 Args.hasArg(OPT_coverage_no_function_names_in_data); 753 Opts.CoverageExitBlockBeforeBody = 754 Args.hasArg(OPT_coverage_exit_block_before_body); 755 if (Args.hasArg(OPT_coverage_version_EQ)) { 756 StringRef CoverageVersion = Args.getLastArgValue(OPT_coverage_version_EQ); 757 if (CoverageVersion.size() != 4) { 758 Diags.Report(diag::err_drv_invalid_value) 759 << Args.getLastArg(OPT_coverage_version_EQ)->getAsString(Args) 760 << CoverageVersion; 761 } else { 762 memcpy(Opts.CoverageVersion, CoverageVersion.data(), 4); 763 } 764 } 765 } 766 // Handle -fembed-bitcode option. 767 if (Arg *A = Args.getLastArg(OPT_fembed_bitcode_EQ)) { 768 StringRef Name = A->getValue(); 769 unsigned Model = llvm::StringSwitch<unsigned>(Name) 770 .Case("off", CodeGenOptions::Embed_Off) 771 .Case("all", CodeGenOptions::Embed_All) 772 .Case("bitcode", CodeGenOptions::Embed_Bitcode) 773 .Case("marker", CodeGenOptions::Embed_Marker) 774 .Default(~0U); 775 if (Model == ~0U) { 776 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Name; 777 Success = false; 778 } else 779 Opts.setEmbedBitcode( 780 static_cast<CodeGenOptions::EmbedBitcodeKind>(Model)); 781 } 782 // FIXME: For backend options that are not yet recorded as function 783 // attributes in the IR, keep track of them so we can embed them in a 784 // separate data section and use them when building the bitcode. 785 if (Opts.getEmbedBitcode() == CodeGenOptions::Embed_All) { 786 for (const auto &A : Args) { 787 // Do not encode output and input. 788 if (A->getOption().getID() == options::OPT_o || 789 A->getOption().getID() == options::OPT_INPUT || 790 A->getOption().getID() == options::OPT_x || 791 A->getOption().getID() == options::OPT_fembed_bitcode || 792 (A->getOption().getGroup().isValid() && 793 A->getOption().getGroup().getID() == options::OPT_W_Group)) 794 continue; 795 ArgStringList ASL; 796 A->render(Args, ASL); 797 for (const auto &arg : ASL) { 798 StringRef ArgStr(arg); 799 Opts.CmdArgs.insert(Opts.CmdArgs.end(), ArgStr.begin(), ArgStr.end()); 800 // using \00 to seperate each commandline options. 801 Opts.CmdArgs.push_back('\0'); 802 } 803 } 804 } 805 806 Opts.PreserveVec3Type = Args.hasArg(OPT_fpreserve_vec3_type); 807 Opts.InstrumentFunctions = Args.hasArg(OPT_finstrument_functions); 808 Opts.InstrumentFunctionsAfterInlining = 809 Args.hasArg(OPT_finstrument_functions_after_inlining); 810 Opts.InstrumentFunctionEntryBare = 811 Args.hasArg(OPT_finstrument_function_entry_bare); 812 Opts.XRayInstrumentFunctions = Args.hasArg(OPT_fxray_instrument); 813 Opts.XRayAlwaysEmitCustomEvents = 814 Args.hasArg(OPT_fxray_always_emit_customevents); 815 Opts.XRayInstructionThreshold = 816 getLastArgIntValue(Args, OPT_fxray_instruction_threshold_EQ, 200, Diags); 817 Opts.InstrumentForProfiling = Args.hasArg(OPT_pg); 818 Opts.CallFEntry = Args.hasArg(OPT_mfentry); 819 Opts.EmitOpenCLArgMetadata = Args.hasArg(OPT_cl_kernel_arg_info); 820 821 if (const Arg *A = Args.getLastArg(OPT_fcf_protection_EQ)) { 822 StringRef Name = A->getValue(); 823 if (Name == "full") { 824 Opts.CFProtectionReturn = 1; 825 Opts.CFProtectionBranch = 1; 826 } else if (Name == "return") 827 Opts.CFProtectionReturn = 1; 828 else if (Name == "branch") 829 Opts.CFProtectionBranch = 1; 830 else if (Name != "none") { 831 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Name; 832 Success = false; 833 } 834 } 835 836 if (const Arg *A = Args.getLastArg(OPT_compress_debug_sections, 837 OPT_compress_debug_sections_EQ)) { 838 if (A->getOption().getID() == OPT_compress_debug_sections) { 839 // TODO: be more clever about the compression type auto-detection 840 Opts.setCompressDebugSections(llvm::DebugCompressionType::GNU); 841 } else { 842 auto DCT = llvm::StringSwitch<llvm::DebugCompressionType>(A->getValue()) 843 .Case("none", llvm::DebugCompressionType::None) 844 .Case("zlib", llvm::DebugCompressionType::Z) 845 .Case("zlib-gnu", llvm::DebugCompressionType::GNU) 846 .Default(llvm::DebugCompressionType::None); 847 Opts.setCompressDebugSections(DCT); 848 } 849 } 850 851 Opts.RelaxELFRelocations = Args.hasArg(OPT_mrelax_relocations); 852 Opts.DebugCompilationDir = Args.getLastArgValue(OPT_fdebug_compilation_dir); 853 for (auto A : Args.filtered(OPT_mlink_bitcode_file, OPT_mlink_cuda_bitcode)) { 854 CodeGenOptions::BitcodeFileToLink F; 855 F.Filename = A->getValue(); 856 if (A->getOption().matches(OPT_mlink_cuda_bitcode)) { 857 F.LinkFlags = llvm::Linker::Flags::LinkOnlyNeeded; 858 // When linking CUDA bitcode, propagate function attributes so that 859 // e.g. libdevice gets fast-math attrs if we're building with fast-math. 860 F.PropagateAttrs = true; 861 F.Internalize = true; 862 } 863 Opts.LinkBitcodeFiles.push_back(F); 864 } 865 Opts.SanitizeCoverageType = 866 getLastArgIntValue(Args, OPT_fsanitize_coverage_type, 0, Diags); 867 Opts.SanitizeCoverageIndirectCalls = 868 Args.hasArg(OPT_fsanitize_coverage_indirect_calls); 869 Opts.SanitizeCoverageTraceBB = Args.hasArg(OPT_fsanitize_coverage_trace_bb); 870 Opts.SanitizeCoverageTraceCmp = Args.hasArg(OPT_fsanitize_coverage_trace_cmp); 871 Opts.SanitizeCoverageTraceDiv = Args.hasArg(OPT_fsanitize_coverage_trace_div); 872 Opts.SanitizeCoverageTraceGep = Args.hasArg(OPT_fsanitize_coverage_trace_gep); 873 Opts.SanitizeCoverage8bitCounters = 874 Args.hasArg(OPT_fsanitize_coverage_8bit_counters); 875 Opts.SanitizeCoverageTracePC = Args.hasArg(OPT_fsanitize_coverage_trace_pc); 876 Opts.SanitizeCoverageTracePCGuard = 877 Args.hasArg(OPT_fsanitize_coverage_trace_pc_guard); 878 Opts.SanitizeCoverageNoPrune = Args.hasArg(OPT_fsanitize_coverage_no_prune); 879 Opts.SanitizeCoverageInline8bitCounters = 880 Args.hasArg(OPT_fsanitize_coverage_inline_8bit_counters); 881 Opts.SanitizeCoveragePCTable = Args.hasArg(OPT_fsanitize_coverage_pc_table); 882 Opts.SanitizeCoverageStackDepth = 883 Args.hasArg(OPT_fsanitize_coverage_stack_depth); 884 Opts.SanitizeMemoryTrackOrigins = 885 getLastArgIntValue(Args, OPT_fsanitize_memory_track_origins_EQ, 0, Diags); 886 Opts.SanitizeMemoryUseAfterDtor = 887 Args.hasFlag(OPT_fsanitize_memory_use_after_dtor, 888 OPT_fno_sanitize_memory_use_after_dtor, 889 false); 890 Opts.SanitizeMinimalRuntime = Args.hasArg(OPT_fsanitize_minimal_runtime); 891 Opts.SanitizeCfiCrossDso = Args.hasArg(OPT_fsanitize_cfi_cross_dso); 892 Opts.SanitizeCfiICallGeneralizePointers = 893 Args.hasArg(OPT_fsanitize_cfi_icall_generalize_pointers); 894 Opts.SanitizeStats = Args.hasArg(OPT_fsanitize_stats); 895 if (Arg *A = Args.getLastArg( 896 OPT_fsanitize_address_poison_class_member_array_new_cookie, 897 OPT_fno_sanitize_address_poison_class_member_array_new_cookie)) { 898 Opts.SanitizeAddressPoisonClassMemberArrayNewCookie = 899 A->getOption().getID() == 900 OPT_fsanitize_address_poison_class_member_array_new_cookie; 901 } 902 if (Arg *A = Args.getLastArg(OPT_fsanitize_address_use_after_scope, 903 OPT_fno_sanitize_address_use_after_scope)) { 904 Opts.SanitizeAddressUseAfterScope = 905 A->getOption().getID() == OPT_fsanitize_address_use_after_scope; 906 } 907 Opts.SanitizeAddressGlobalsDeadStripping = 908 Args.hasArg(OPT_fsanitize_address_globals_dead_stripping); 909 Opts.SSPBufferSize = 910 getLastArgIntValue(Args, OPT_stack_protector_buffer_size, 8, Diags); 911 Opts.StackRealignment = Args.hasArg(OPT_mstackrealign); 912 if (Arg *A = Args.getLastArg(OPT_mstack_alignment)) { 913 StringRef Val = A->getValue(); 914 unsigned StackAlignment = Opts.StackAlignment; 915 Val.getAsInteger(10, StackAlignment); 916 Opts.StackAlignment = StackAlignment; 917 } 918 919 if (Arg *A = Args.getLastArg(OPT_mstack_probe_size)) { 920 StringRef Val = A->getValue(); 921 unsigned StackProbeSize = Opts.StackProbeSize; 922 Val.getAsInteger(0, StackProbeSize); 923 Opts.StackProbeSize = StackProbeSize; 924 } 925 926 if (Arg *A = Args.getLastArg(OPT_fobjc_dispatch_method_EQ)) { 927 StringRef Name = A->getValue(); 928 unsigned Method = llvm::StringSwitch<unsigned>(Name) 929 .Case("legacy", CodeGenOptions::Legacy) 930 .Case("non-legacy", CodeGenOptions::NonLegacy) 931 .Case("mixed", CodeGenOptions::Mixed) 932 .Default(~0U); 933 if (Method == ~0U) { 934 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Name; 935 Success = false; 936 } else { 937 Opts.setObjCDispatchMethod( 938 static_cast<CodeGenOptions::ObjCDispatchMethodKind>(Method)); 939 } 940 } 941 942 Opts.EmulatedTLS = 943 Args.hasFlag(OPT_femulated_tls, OPT_fno_emulated_tls, false); 944 945 if (Arg *A = Args.getLastArg(OPT_ftlsmodel_EQ)) { 946 StringRef Name = A->getValue(); 947 unsigned Model = llvm::StringSwitch<unsigned>(Name) 948 .Case("global-dynamic", CodeGenOptions::GeneralDynamicTLSModel) 949 .Case("local-dynamic", CodeGenOptions::LocalDynamicTLSModel) 950 .Case("initial-exec", CodeGenOptions::InitialExecTLSModel) 951 .Case("local-exec", CodeGenOptions::LocalExecTLSModel) 952 .Default(~0U); 953 if (Model == ~0U) { 954 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Name; 955 Success = false; 956 } else { 957 Opts.setDefaultTLSModel(static_cast<CodeGenOptions::TLSModel>(Model)); 958 } 959 } 960 961 if (Arg *A = Args.getLastArg(OPT_fdenormal_fp_math_EQ)) { 962 StringRef Val = A->getValue(); 963 if (Val == "ieee") 964 Opts.FPDenormalMode = "ieee"; 965 else if (Val == "preserve-sign") 966 Opts.FPDenormalMode = "preserve-sign"; 967 else if (Val == "positive-zero") 968 Opts.FPDenormalMode = "positive-zero"; 969 else 970 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Val; 971 } 972 973 if (Arg *A = Args.getLastArg(OPT_fpcc_struct_return, OPT_freg_struct_return)) { 974 if (A->getOption().matches(OPT_fpcc_struct_return)) { 975 Opts.setStructReturnConvention(CodeGenOptions::SRCK_OnStack); 976 } else { 977 assert(A->getOption().matches(OPT_freg_struct_return)); 978 Opts.setStructReturnConvention(CodeGenOptions::SRCK_InRegs); 979 } 980 } 981 982 Opts.DependentLibraries = Args.getAllArgValues(OPT_dependent_lib); 983 Opts.LinkerOptions = Args.getAllArgValues(OPT_linker_option); 984 bool NeedLocTracking = false; 985 986 Opts.OptRecordFile = Args.getLastArgValue(OPT_opt_record_file); 987 if (!Opts.OptRecordFile.empty()) 988 NeedLocTracking = true; 989 990 if (Arg *A = Args.getLastArg(OPT_Rpass_EQ)) { 991 Opts.OptimizationRemarkPattern = 992 GenerateOptimizationRemarkRegex(Diags, Args, A); 993 NeedLocTracking = true; 994 } 995 996 if (Arg *A = Args.getLastArg(OPT_Rpass_missed_EQ)) { 997 Opts.OptimizationRemarkMissedPattern = 998 GenerateOptimizationRemarkRegex(Diags, Args, A); 999 NeedLocTracking = true; 1000 } 1001 1002 if (Arg *A = Args.getLastArg(OPT_Rpass_analysis_EQ)) { 1003 Opts.OptimizationRemarkAnalysisPattern = 1004 GenerateOptimizationRemarkRegex(Diags, Args, A); 1005 NeedLocTracking = true; 1006 } 1007 1008 Opts.DiagnosticsWithHotness = 1009 Args.hasArg(options::OPT_fdiagnostics_show_hotness); 1010 bool UsingSampleProfile = !Opts.SampleProfileFile.empty(); 1011 bool UsingProfile = UsingSampleProfile || 1012 (Opts.getProfileUse() != CodeGenOptions::ProfileNone); 1013 1014 if (Opts.DiagnosticsWithHotness && !UsingProfile) 1015 Diags.Report(diag::warn_drv_diagnostics_hotness_requires_pgo) 1016 << "-fdiagnostics-show-hotness"; 1017 1018 Opts.DiagnosticsHotnessThreshold = getLastArgUInt64Value( 1019 Args, options::OPT_fdiagnostics_hotness_threshold_EQ, 0); 1020 if (Opts.DiagnosticsHotnessThreshold > 0 && !UsingProfile) 1021 Diags.Report(diag::warn_drv_diagnostics_hotness_requires_pgo) 1022 << "-fdiagnostics-hotness-threshold="; 1023 1024 // If the user requested to use a sample profile for PGO, then the 1025 // backend will need to track source location information so the profile 1026 // can be incorporated into the IR. 1027 if (UsingSampleProfile) 1028 NeedLocTracking = true; 1029 1030 // If the user requested a flag that requires source locations available in 1031 // the backend, make sure that the backend tracks source location information. 1032 if (NeedLocTracking && Opts.getDebugInfo() == codegenoptions::NoDebugInfo) 1033 Opts.setDebugInfo(codegenoptions::LocTrackingOnly); 1034 1035 Opts.RewriteMapFiles = Args.getAllArgValues(OPT_frewrite_map_file); 1036 1037 // Parse -fsanitize-recover= arguments. 1038 // FIXME: Report unrecoverable sanitizers incorrectly specified here. 1039 parseSanitizerKinds("-fsanitize-recover=", 1040 Args.getAllArgValues(OPT_fsanitize_recover_EQ), Diags, 1041 Opts.SanitizeRecover); 1042 parseSanitizerKinds("-fsanitize-trap=", 1043 Args.getAllArgValues(OPT_fsanitize_trap_EQ), Diags, 1044 Opts.SanitizeTrap); 1045 1046 Opts.CudaGpuBinaryFileNames = 1047 Args.getAllArgValues(OPT_fcuda_include_gpubinary); 1048 1049 Opts.Backchain = Args.hasArg(OPT_mbackchain); 1050 1051 Opts.EmitCheckPathComponentsToStrip = getLastArgIntValue( 1052 Args, OPT_fsanitize_undefined_strip_path_components_EQ, 0, Diags); 1053 1054 return Success; 1055 } 1056 1057 static void ParseDependencyOutputArgs(DependencyOutputOptions &Opts, 1058 ArgList &Args) { 1059 using namespace options; 1060 Opts.OutputFile = Args.getLastArgValue(OPT_dependency_file); 1061 Opts.Targets = Args.getAllArgValues(OPT_MT); 1062 Opts.IncludeSystemHeaders = Args.hasArg(OPT_sys_header_deps); 1063 Opts.IncludeModuleFiles = Args.hasArg(OPT_module_file_deps); 1064 Opts.UsePhonyTargets = Args.hasArg(OPT_MP); 1065 Opts.ShowHeaderIncludes = Args.hasArg(OPT_H); 1066 Opts.HeaderIncludeOutputFile = Args.getLastArgValue(OPT_header_include_file); 1067 Opts.AddMissingHeaderDeps = Args.hasArg(OPT_MG); 1068 Opts.PrintShowIncludes = Args.hasArg(OPT_show_includes); 1069 Opts.DOTOutputFile = Args.getLastArgValue(OPT_dependency_dot); 1070 Opts.ModuleDependencyOutputDir = 1071 Args.getLastArgValue(OPT_module_dependency_dir); 1072 if (Args.hasArg(OPT_MV)) 1073 Opts.OutputFormat = DependencyOutputFormat::NMake; 1074 // Add sanitizer blacklists as extra dependencies. 1075 // They won't be discovered by the regular preprocessor, so 1076 // we let make / ninja to know about this implicit dependency. 1077 Opts.ExtraDeps = Args.getAllArgValues(OPT_fdepfile_entry); 1078 // Only the -fmodule-file=<file> form. 1079 for (const Arg *A : Args.filtered(OPT_fmodule_file)) { 1080 StringRef Val = A->getValue(); 1081 if (Val.find('=') == StringRef::npos) 1082 Opts.ExtraDeps.push_back(Val); 1083 } 1084 } 1085 1086 static bool parseShowColorsArgs(const ArgList &Args, bool DefaultColor) { 1087 // Color diagnostics default to auto ("on" if terminal supports) in the driver 1088 // but default to off in cc1, needing an explicit OPT_fdiagnostics_color. 1089 // Support both clang's -f[no-]color-diagnostics and gcc's 1090 // -f[no-]diagnostics-colors[=never|always|auto]. 1091 enum { 1092 Colors_On, 1093 Colors_Off, 1094 Colors_Auto 1095 } ShowColors = DefaultColor ? Colors_Auto : Colors_Off; 1096 for (Arg *A : Args) { 1097 const Option &O = A->getOption(); 1098 if (O.matches(options::OPT_fcolor_diagnostics) || 1099 O.matches(options::OPT_fdiagnostics_color)) { 1100 ShowColors = Colors_On; 1101 } else if (O.matches(options::OPT_fno_color_diagnostics) || 1102 O.matches(options::OPT_fno_diagnostics_color)) { 1103 ShowColors = Colors_Off; 1104 } else if (O.matches(options::OPT_fdiagnostics_color_EQ)) { 1105 StringRef Value(A->getValue()); 1106 if (Value == "always") 1107 ShowColors = Colors_On; 1108 else if (Value == "never") 1109 ShowColors = Colors_Off; 1110 else if (Value == "auto") 1111 ShowColors = Colors_Auto; 1112 } 1113 } 1114 return ShowColors == Colors_On || 1115 (ShowColors == Colors_Auto && 1116 llvm::sys::Process::StandardErrHasColors()); 1117 } 1118 1119 static bool checkVerifyPrefixes(const std::vector<std::string> &VerifyPrefixes, 1120 DiagnosticsEngine *Diags) { 1121 bool Success = true; 1122 for (const auto &Prefix : VerifyPrefixes) { 1123 // Every prefix must start with a letter and contain only alphanumeric 1124 // characters, hyphens, and underscores. 1125 auto BadChar = std::find_if(Prefix.begin(), Prefix.end(), 1126 [](char C){return !isAlphanumeric(C) 1127 && C != '-' && C != '_';}); 1128 if (BadChar != Prefix.end() || !isLetter(Prefix[0])) { 1129 Success = false; 1130 if (Diags) { 1131 Diags->Report(diag::err_drv_invalid_value) << "-verify=" << Prefix; 1132 Diags->Report(diag::note_drv_verify_prefix_spelling); 1133 } 1134 } 1135 } 1136 return Success; 1137 } 1138 1139 bool clang::ParseDiagnosticArgs(DiagnosticOptions &Opts, ArgList &Args, 1140 DiagnosticsEngine *Diags, 1141 bool DefaultDiagColor, bool DefaultShowOpt) { 1142 using namespace options; 1143 bool Success = true; 1144 1145 Opts.DiagnosticLogFile = Args.getLastArgValue(OPT_diagnostic_log_file); 1146 if (Arg *A = 1147 Args.getLastArg(OPT_diagnostic_serialized_file, OPT__serialize_diags)) 1148 Opts.DiagnosticSerializationFile = A->getValue(); 1149 Opts.IgnoreWarnings = Args.hasArg(OPT_w); 1150 Opts.NoRewriteMacros = Args.hasArg(OPT_Wno_rewrite_macros); 1151 Opts.Pedantic = Args.hasArg(OPT_pedantic); 1152 Opts.PedanticErrors = Args.hasArg(OPT_pedantic_errors); 1153 Opts.ShowCarets = !Args.hasArg(OPT_fno_caret_diagnostics); 1154 Opts.ShowColors = parseShowColorsArgs(Args, DefaultDiagColor); 1155 Opts.ShowColumn = Args.hasFlag(OPT_fshow_column, 1156 OPT_fno_show_column, 1157 /*Default=*/true); 1158 Opts.ShowFixits = !Args.hasArg(OPT_fno_diagnostics_fixit_info); 1159 Opts.ShowLocation = !Args.hasArg(OPT_fno_show_source_location); 1160 Opts.AbsolutePath = Args.hasArg(OPT_fdiagnostics_absolute_paths); 1161 Opts.ShowOptionNames = 1162 Args.hasFlag(OPT_fdiagnostics_show_option, 1163 OPT_fno_diagnostics_show_option, DefaultShowOpt); 1164 1165 llvm::sys::Process::UseANSIEscapeCodes(Args.hasArg(OPT_fansi_escape_codes)); 1166 1167 // Default behavior is to not to show note include stacks. 1168 Opts.ShowNoteIncludeStack = false; 1169 if (Arg *A = Args.getLastArg(OPT_fdiagnostics_show_note_include_stack, 1170 OPT_fno_diagnostics_show_note_include_stack)) 1171 if (A->getOption().matches(OPT_fdiagnostics_show_note_include_stack)) 1172 Opts.ShowNoteIncludeStack = true; 1173 1174 StringRef ShowOverloads = 1175 Args.getLastArgValue(OPT_fshow_overloads_EQ, "all"); 1176 if (ShowOverloads == "best") 1177 Opts.setShowOverloads(Ovl_Best); 1178 else if (ShowOverloads == "all") 1179 Opts.setShowOverloads(Ovl_All); 1180 else { 1181 Success = false; 1182 if (Diags) 1183 Diags->Report(diag::err_drv_invalid_value) 1184 << Args.getLastArg(OPT_fshow_overloads_EQ)->getAsString(Args) 1185 << ShowOverloads; 1186 } 1187 1188 StringRef ShowCategory = 1189 Args.getLastArgValue(OPT_fdiagnostics_show_category, "none"); 1190 if (ShowCategory == "none") 1191 Opts.ShowCategories = 0; 1192 else if (ShowCategory == "id") 1193 Opts.ShowCategories = 1; 1194 else if (ShowCategory == "name") 1195 Opts.ShowCategories = 2; 1196 else { 1197 Success = false; 1198 if (Diags) 1199 Diags->Report(diag::err_drv_invalid_value) 1200 << Args.getLastArg(OPT_fdiagnostics_show_category)->getAsString(Args) 1201 << ShowCategory; 1202 } 1203 1204 StringRef Format = 1205 Args.getLastArgValue(OPT_fdiagnostics_format, "clang"); 1206 if (Format == "clang") 1207 Opts.setFormat(DiagnosticOptions::Clang); 1208 else if (Format == "msvc") 1209 Opts.setFormat(DiagnosticOptions::MSVC); 1210 else if (Format == "msvc-fallback") { 1211 Opts.setFormat(DiagnosticOptions::MSVC); 1212 Opts.CLFallbackMode = true; 1213 } else if (Format == "vi") 1214 Opts.setFormat(DiagnosticOptions::Vi); 1215 else { 1216 Success = false; 1217 if (Diags) 1218 Diags->Report(diag::err_drv_invalid_value) 1219 << Args.getLastArg(OPT_fdiagnostics_format)->getAsString(Args) 1220 << Format; 1221 } 1222 1223 Opts.ShowSourceRanges = Args.hasArg(OPT_fdiagnostics_print_source_range_info); 1224 Opts.ShowParseableFixits = Args.hasArg(OPT_fdiagnostics_parseable_fixits); 1225 Opts.ShowPresumedLoc = !Args.hasArg(OPT_fno_diagnostics_use_presumed_location); 1226 Opts.VerifyDiagnostics = Args.hasArg(OPT_verify) || Args.hasArg(OPT_verify_EQ); 1227 Opts.VerifyPrefixes = Args.getAllArgValues(OPT_verify_EQ); 1228 if (Args.hasArg(OPT_verify)) 1229 Opts.VerifyPrefixes.push_back("expected"); 1230 // Keep VerifyPrefixes in its original order for the sake of diagnostics, and 1231 // then sort it to prepare for fast lookup using std::binary_search. 1232 if (!checkVerifyPrefixes(Opts.VerifyPrefixes, Diags)) { 1233 Opts.VerifyDiagnostics = false; 1234 Success = false; 1235 } 1236 else 1237 std::sort(Opts.VerifyPrefixes.begin(), Opts.VerifyPrefixes.end()); 1238 DiagnosticLevelMask DiagMask = DiagnosticLevelMask::None; 1239 Success &= parseDiagnosticLevelMask("-verify-ignore-unexpected=", 1240 Args.getAllArgValues(OPT_verify_ignore_unexpected_EQ), 1241 Diags, DiagMask); 1242 if (Args.hasArg(OPT_verify_ignore_unexpected)) 1243 DiagMask = DiagnosticLevelMask::All; 1244 Opts.setVerifyIgnoreUnexpected(DiagMask); 1245 Opts.ElideType = !Args.hasArg(OPT_fno_elide_type); 1246 Opts.ShowTemplateTree = Args.hasArg(OPT_fdiagnostics_show_template_tree); 1247 Opts.ErrorLimit = getLastArgIntValue(Args, OPT_ferror_limit, 0, Diags); 1248 Opts.MacroBacktraceLimit = 1249 getLastArgIntValue(Args, OPT_fmacro_backtrace_limit, 1250 DiagnosticOptions::DefaultMacroBacktraceLimit, Diags); 1251 Opts.TemplateBacktraceLimit = getLastArgIntValue( 1252 Args, OPT_ftemplate_backtrace_limit, 1253 DiagnosticOptions::DefaultTemplateBacktraceLimit, Diags); 1254 Opts.ConstexprBacktraceLimit = getLastArgIntValue( 1255 Args, OPT_fconstexpr_backtrace_limit, 1256 DiagnosticOptions::DefaultConstexprBacktraceLimit, Diags); 1257 Opts.SpellCheckingLimit = getLastArgIntValue( 1258 Args, OPT_fspell_checking_limit, 1259 DiagnosticOptions::DefaultSpellCheckingLimit, Diags); 1260 Opts.SnippetLineLimit = getLastArgIntValue( 1261 Args, OPT_fcaret_diagnostics_max_lines, 1262 DiagnosticOptions::DefaultSnippetLineLimit, Diags); 1263 Opts.TabStop = getLastArgIntValue(Args, OPT_ftabstop, 1264 DiagnosticOptions::DefaultTabStop, Diags); 1265 if (Opts.TabStop == 0 || Opts.TabStop > DiagnosticOptions::MaxTabStop) { 1266 Opts.TabStop = DiagnosticOptions::DefaultTabStop; 1267 if (Diags) 1268 Diags->Report(diag::warn_ignoring_ftabstop_value) 1269 << Opts.TabStop << DiagnosticOptions::DefaultTabStop; 1270 } 1271 Opts.MessageLength = getLastArgIntValue(Args, OPT_fmessage_length, 0, Diags); 1272 addDiagnosticArgs(Args, OPT_W_Group, OPT_W_value_Group, Opts.Warnings); 1273 addDiagnosticArgs(Args, OPT_R_Group, OPT_R_value_Group, Opts.Remarks); 1274 1275 return Success; 1276 } 1277 1278 static void ParseFileSystemArgs(FileSystemOptions &Opts, ArgList &Args) { 1279 Opts.WorkingDir = Args.getLastArgValue(OPT_working_directory); 1280 } 1281 1282 /// Parse the argument to the -ftest-module-file-extension 1283 /// command-line argument. 1284 /// 1285 /// \returns true on error, false on success. 1286 static bool parseTestModuleFileExtensionArg(StringRef Arg, 1287 std::string &BlockName, 1288 unsigned &MajorVersion, 1289 unsigned &MinorVersion, 1290 bool &Hashed, 1291 std::string &UserInfo) { 1292 SmallVector<StringRef, 5> Args; 1293 Arg.split(Args, ':', 5); 1294 if (Args.size() < 5) 1295 return true; 1296 1297 BlockName = Args[0]; 1298 if (Args[1].getAsInteger(10, MajorVersion)) return true; 1299 if (Args[2].getAsInteger(10, MinorVersion)) return true; 1300 if (Args[3].getAsInteger(2, Hashed)) return true; 1301 if (Args.size() > 4) 1302 UserInfo = Args[4]; 1303 return false; 1304 } 1305 1306 static InputKind ParseFrontendArgs(FrontendOptions &Opts, ArgList &Args, 1307 DiagnosticsEngine &Diags, 1308 bool &IsHeaderFile) { 1309 using namespace options; 1310 Opts.ProgramAction = frontend::ParseSyntaxOnly; 1311 if (const Arg *A = Args.getLastArg(OPT_Action_Group)) { 1312 switch (A->getOption().getID()) { 1313 default: 1314 llvm_unreachable("Invalid option in group!"); 1315 case OPT_ast_list: 1316 Opts.ProgramAction = frontend::ASTDeclList; break; 1317 case OPT_ast_dump: 1318 case OPT_ast_dump_all: 1319 case OPT_ast_dump_lookups: 1320 Opts.ProgramAction = frontend::ASTDump; break; 1321 case OPT_ast_print: 1322 Opts.ProgramAction = frontend::ASTPrint; break; 1323 case OPT_ast_view: 1324 Opts.ProgramAction = frontend::ASTView; break; 1325 case OPT_dump_raw_tokens: 1326 Opts.ProgramAction = frontend::DumpRawTokens; break; 1327 case OPT_dump_tokens: 1328 Opts.ProgramAction = frontend::DumpTokens; break; 1329 case OPT_S: 1330 Opts.ProgramAction = frontend::EmitAssembly; break; 1331 case OPT_emit_llvm_bc: 1332 Opts.ProgramAction = frontend::EmitBC; break; 1333 case OPT_emit_html: 1334 Opts.ProgramAction = frontend::EmitHTML; break; 1335 case OPT_emit_llvm: 1336 Opts.ProgramAction = frontend::EmitLLVM; break; 1337 case OPT_emit_llvm_only: 1338 Opts.ProgramAction = frontend::EmitLLVMOnly; break; 1339 case OPT_emit_codegen_only: 1340 Opts.ProgramAction = frontend::EmitCodeGenOnly; break; 1341 case OPT_emit_obj: 1342 Opts.ProgramAction = frontend::EmitObj; break; 1343 case OPT_fixit_EQ: 1344 Opts.FixItSuffix = A->getValue(); 1345 // fall-through! 1346 case OPT_fixit: 1347 Opts.ProgramAction = frontend::FixIt; break; 1348 case OPT_emit_module: 1349 Opts.ProgramAction = frontend::GenerateModule; break; 1350 case OPT_emit_module_interface: 1351 Opts.ProgramAction = frontend::GenerateModuleInterface; break; 1352 case OPT_emit_pch: 1353 Opts.ProgramAction = frontend::GeneratePCH; break; 1354 case OPT_emit_pth: 1355 Opts.ProgramAction = frontend::GeneratePTH; break; 1356 case OPT_init_only: 1357 Opts.ProgramAction = frontend::InitOnly; break; 1358 case OPT_fsyntax_only: 1359 Opts.ProgramAction = frontend::ParseSyntaxOnly; break; 1360 case OPT_module_file_info: 1361 Opts.ProgramAction = frontend::ModuleFileInfo; break; 1362 case OPT_verify_pch: 1363 Opts.ProgramAction = frontend::VerifyPCH; break; 1364 case OPT_print_decl_contexts: 1365 Opts.ProgramAction = frontend::PrintDeclContext; break; 1366 case OPT_print_preamble: 1367 Opts.ProgramAction = frontend::PrintPreamble; break; 1368 case OPT_E: 1369 Opts.ProgramAction = frontend::PrintPreprocessedInput; break; 1370 case OPT_templight_dump: 1371 Opts.ProgramAction = frontend::TemplightDump; break; 1372 case OPT_rewrite_macros: 1373 Opts.ProgramAction = frontend::RewriteMacros; break; 1374 case OPT_rewrite_objc: 1375 Opts.ProgramAction = frontend::RewriteObjC; break; 1376 case OPT_rewrite_test: 1377 Opts.ProgramAction = frontend::RewriteTest; break; 1378 case OPT_analyze: 1379 Opts.ProgramAction = frontend::RunAnalysis; break; 1380 case OPT_migrate: 1381 Opts.ProgramAction = frontend::MigrateSource; break; 1382 case OPT_Eonly: 1383 Opts.ProgramAction = frontend::RunPreprocessorOnly; break; 1384 } 1385 } 1386 1387 if (const Arg* A = Args.getLastArg(OPT_plugin)) { 1388 Opts.Plugins.emplace_back(A->getValue(0)); 1389 Opts.ProgramAction = frontend::PluginAction; 1390 Opts.ActionName = A->getValue(); 1391 } 1392 Opts.AddPluginActions = Args.getAllArgValues(OPT_add_plugin); 1393 for (const Arg *AA : Args.filtered(OPT_plugin_arg)) 1394 Opts.PluginArgs[AA->getValue(0)].emplace_back(AA->getValue(1)); 1395 1396 for (const std::string &Arg : 1397 Args.getAllArgValues(OPT_ftest_module_file_extension_EQ)) { 1398 std::string BlockName; 1399 unsigned MajorVersion; 1400 unsigned MinorVersion; 1401 bool Hashed; 1402 std::string UserInfo; 1403 if (parseTestModuleFileExtensionArg(Arg, BlockName, MajorVersion, 1404 MinorVersion, Hashed, UserInfo)) { 1405 Diags.Report(diag::err_test_module_file_extension_format) << Arg; 1406 1407 continue; 1408 } 1409 1410 // Add the testing module file extension. 1411 Opts.ModuleFileExtensions.push_back( 1412 std::make_shared<TestModuleFileExtension>( 1413 BlockName, MajorVersion, MinorVersion, Hashed, UserInfo)); 1414 } 1415 1416 if (const Arg *A = Args.getLastArg(OPT_code_completion_at)) { 1417 Opts.CodeCompletionAt = 1418 ParsedSourceLocation::FromString(A->getValue()); 1419 if (Opts.CodeCompletionAt.FileName.empty()) 1420 Diags.Report(diag::err_drv_invalid_value) 1421 << A->getAsString(Args) << A->getValue(); 1422 } 1423 Opts.DisableFree = Args.hasArg(OPT_disable_free); 1424 1425 Opts.OutputFile = Args.getLastArgValue(OPT_o); 1426 Opts.Plugins = Args.getAllArgValues(OPT_load); 1427 Opts.RelocatablePCH = Args.hasArg(OPT_relocatable_pch); 1428 Opts.ShowHelp = Args.hasArg(OPT_help); 1429 Opts.ShowStats = Args.hasArg(OPT_print_stats); 1430 Opts.ShowTimers = Args.hasArg(OPT_ftime_report); 1431 Opts.ShowVersion = Args.hasArg(OPT_version); 1432 Opts.ASTMergeFiles = Args.getAllArgValues(OPT_ast_merge); 1433 Opts.LLVMArgs = Args.getAllArgValues(OPT_mllvm); 1434 Opts.FixWhatYouCan = Args.hasArg(OPT_fix_what_you_can); 1435 Opts.FixOnlyWarnings = Args.hasArg(OPT_fix_only_warnings); 1436 Opts.FixAndRecompile = Args.hasArg(OPT_fixit_recompile); 1437 Opts.FixToTemporaries = Args.hasArg(OPT_fixit_to_temp); 1438 Opts.ASTDumpDecls = Args.hasArg(OPT_ast_dump); 1439 Opts.ASTDumpAll = Args.hasArg(OPT_ast_dump_all); 1440 Opts.ASTDumpFilter = Args.getLastArgValue(OPT_ast_dump_filter); 1441 Opts.ASTDumpLookups = Args.hasArg(OPT_ast_dump_lookups); 1442 Opts.UseGlobalModuleIndex = !Args.hasArg(OPT_fno_modules_global_index); 1443 Opts.GenerateGlobalModuleIndex = Opts.UseGlobalModuleIndex; 1444 Opts.ModuleMapFiles = Args.getAllArgValues(OPT_fmodule_map_file); 1445 // Only the -fmodule-file=<file> form. 1446 for (const Arg *A : Args.filtered(OPT_fmodule_file)) { 1447 StringRef Val = A->getValue(); 1448 if (Val.find('=') == StringRef::npos) 1449 Opts.ModuleFiles.push_back(Val); 1450 } 1451 Opts.ModulesEmbedFiles = Args.getAllArgValues(OPT_fmodules_embed_file_EQ); 1452 Opts.ModulesEmbedAllFiles = Args.hasArg(OPT_fmodules_embed_all_files); 1453 Opts.IncludeTimestamps = !Args.hasArg(OPT_fno_pch_timestamp); 1454 1455 Opts.CodeCompleteOpts.IncludeMacros 1456 = Args.hasArg(OPT_code_completion_macros); 1457 Opts.CodeCompleteOpts.IncludeCodePatterns 1458 = Args.hasArg(OPT_code_completion_patterns); 1459 Opts.CodeCompleteOpts.IncludeGlobals 1460 = !Args.hasArg(OPT_no_code_completion_globals); 1461 Opts.CodeCompleteOpts.IncludeNamespaceLevelDecls 1462 = !Args.hasArg(OPT_no_code_completion_ns_level_decls); 1463 Opts.CodeCompleteOpts.IncludeBriefComments 1464 = Args.hasArg(OPT_code_completion_brief_comments); 1465 1466 Opts.OverrideRecordLayoutsFile 1467 = Args.getLastArgValue(OPT_foverride_record_layout_EQ); 1468 Opts.AuxTriple = 1469 llvm::Triple::normalize(Args.getLastArgValue(OPT_aux_triple)); 1470 Opts.FindPchSource = Args.getLastArgValue(OPT_find_pch_source_EQ); 1471 Opts.StatsFile = Args.getLastArgValue(OPT_stats_file); 1472 1473 if (const Arg *A = Args.getLastArg(OPT_arcmt_check, 1474 OPT_arcmt_modify, 1475 OPT_arcmt_migrate)) { 1476 switch (A->getOption().getID()) { 1477 default: 1478 llvm_unreachable("missed a case"); 1479 case OPT_arcmt_check: 1480 Opts.ARCMTAction = FrontendOptions::ARCMT_Check; 1481 break; 1482 case OPT_arcmt_modify: 1483 Opts.ARCMTAction = FrontendOptions::ARCMT_Modify; 1484 break; 1485 case OPT_arcmt_migrate: 1486 Opts.ARCMTAction = FrontendOptions::ARCMT_Migrate; 1487 break; 1488 } 1489 } 1490 Opts.MTMigrateDir = Args.getLastArgValue(OPT_mt_migrate_directory); 1491 Opts.ARCMTMigrateReportOut 1492 = Args.getLastArgValue(OPT_arcmt_migrate_report_output); 1493 Opts.ARCMTMigrateEmitARCErrors 1494 = Args.hasArg(OPT_arcmt_migrate_emit_arc_errors); 1495 1496 if (Args.hasArg(OPT_objcmt_migrate_literals)) 1497 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_Literals; 1498 if (Args.hasArg(OPT_objcmt_migrate_subscripting)) 1499 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_Subscripting; 1500 if (Args.hasArg(OPT_objcmt_migrate_property_dot_syntax)) 1501 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_PropertyDotSyntax; 1502 if (Args.hasArg(OPT_objcmt_migrate_property)) 1503 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_Property; 1504 if (Args.hasArg(OPT_objcmt_migrate_readonly_property)) 1505 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_ReadonlyProperty; 1506 if (Args.hasArg(OPT_objcmt_migrate_readwrite_property)) 1507 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_ReadwriteProperty; 1508 if (Args.hasArg(OPT_objcmt_migrate_annotation)) 1509 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_Annotation; 1510 if (Args.hasArg(OPT_objcmt_returns_innerpointer_property)) 1511 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_ReturnsInnerPointerProperty; 1512 if (Args.hasArg(OPT_objcmt_migrate_instancetype)) 1513 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_Instancetype; 1514 if (Args.hasArg(OPT_objcmt_migrate_nsmacros)) 1515 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_NsMacros; 1516 if (Args.hasArg(OPT_objcmt_migrate_protocol_conformance)) 1517 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_ProtocolConformance; 1518 if (Args.hasArg(OPT_objcmt_atomic_property)) 1519 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_AtomicProperty; 1520 if (Args.hasArg(OPT_objcmt_ns_nonatomic_iosonly)) 1521 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_NsAtomicIOSOnlyProperty; 1522 if (Args.hasArg(OPT_objcmt_migrate_designated_init)) 1523 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_DesignatedInitializer; 1524 if (Args.hasArg(OPT_objcmt_migrate_all)) 1525 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_MigrateDecls; 1526 1527 Opts.ObjCMTWhiteListPath = Args.getLastArgValue(OPT_objcmt_whitelist_dir_path); 1528 1529 if (Opts.ARCMTAction != FrontendOptions::ARCMT_None && 1530 Opts.ObjCMTAction != FrontendOptions::ObjCMT_None) { 1531 Diags.Report(diag::err_drv_argument_not_allowed_with) 1532 << "ARC migration" << "ObjC migration"; 1533 } 1534 1535 InputKind DashX(InputKind::Unknown); 1536 if (const Arg *A = Args.getLastArg(OPT_x)) { 1537 StringRef XValue = A->getValue(); 1538 1539 // Parse suffixes: '<lang>(-header|[-module-map][-cpp-output])'. 1540 // FIXME: Supporting '<lang>-header-cpp-output' would be useful. 1541 bool Preprocessed = XValue.consume_back("-cpp-output"); 1542 bool ModuleMap = XValue.consume_back("-module-map"); 1543 IsHeaderFile = 1544 !Preprocessed && !ModuleMap && XValue.consume_back("-header"); 1545 1546 // Principal languages. 1547 DashX = llvm::StringSwitch<InputKind>(XValue) 1548 .Case("c", InputKind::C) 1549 .Case("cl", InputKind::OpenCL) 1550 .Case("cuda", InputKind::CUDA) 1551 .Case("c++", InputKind::CXX) 1552 .Case("objective-c", InputKind::ObjC) 1553 .Case("objective-c++", InputKind::ObjCXX) 1554 .Case("renderscript", InputKind::RenderScript) 1555 .Default(InputKind::Unknown); 1556 1557 // "objc[++]-cpp-output" is an acceptable synonym for 1558 // "objective-c[++]-cpp-output". 1559 if (DashX.isUnknown() && Preprocessed && !IsHeaderFile && !ModuleMap) 1560 DashX = llvm::StringSwitch<InputKind>(XValue) 1561 .Case("objc", InputKind::ObjC) 1562 .Case("objc++", InputKind::ObjCXX) 1563 .Default(InputKind::Unknown); 1564 1565 // Some special cases cannot be combined with suffixes. 1566 if (DashX.isUnknown() && !Preprocessed && !ModuleMap && !IsHeaderFile) 1567 DashX = llvm::StringSwitch<InputKind>(XValue) 1568 .Case("cpp-output", InputKind(InputKind::C).getPreprocessed()) 1569 .Case("assembler-with-cpp", InputKind::Asm) 1570 .Cases("ast", "pcm", 1571 InputKind(InputKind::Unknown, InputKind::Precompiled)) 1572 .Case("ir", InputKind::LLVM_IR) 1573 .Default(InputKind::Unknown); 1574 1575 if (DashX.isUnknown()) 1576 Diags.Report(diag::err_drv_invalid_value) 1577 << A->getAsString(Args) << A->getValue(); 1578 1579 if (Preprocessed) 1580 DashX = DashX.getPreprocessed(); 1581 if (ModuleMap) 1582 DashX = DashX.withFormat(InputKind::ModuleMap); 1583 } 1584 1585 // '-' is the default input if none is given. 1586 std::vector<std::string> Inputs = Args.getAllArgValues(OPT_INPUT); 1587 Opts.Inputs.clear(); 1588 if (Inputs.empty()) 1589 Inputs.push_back("-"); 1590 for (unsigned i = 0, e = Inputs.size(); i != e; ++i) { 1591 InputKind IK = DashX; 1592 if (IK.isUnknown()) { 1593 IK = FrontendOptions::getInputKindForExtension( 1594 StringRef(Inputs[i]).rsplit('.').second); 1595 // FIXME: Warn on this? 1596 if (IK.isUnknown()) 1597 IK = InputKind::C; 1598 // FIXME: Remove this hack. 1599 if (i == 0) 1600 DashX = IK; 1601 } 1602 1603 // The -emit-module action implicitly takes a module map. 1604 if (Opts.ProgramAction == frontend::GenerateModule && 1605 IK.getFormat() == InputKind::Source) 1606 IK = IK.withFormat(InputKind::ModuleMap); 1607 1608 Opts.Inputs.emplace_back(std::move(Inputs[i]), IK); 1609 } 1610 1611 return DashX; 1612 } 1613 1614 std::string CompilerInvocation::GetResourcesPath(const char *Argv0, 1615 void *MainAddr) { 1616 std::string ClangExecutable = 1617 llvm::sys::fs::getMainExecutable(Argv0, MainAddr); 1618 StringRef Dir = llvm::sys::path::parent_path(ClangExecutable); 1619 1620 // Compute the path to the resource directory. 1621 StringRef ClangResourceDir(CLANG_RESOURCE_DIR); 1622 SmallString<128> P(Dir); 1623 if (ClangResourceDir != "") 1624 llvm::sys::path::append(P, ClangResourceDir); 1625 else 1626 llvm::sys::path::append(P, "..", Twine("lib") + CLANG_LIBDIR_SUFFIX, 1627 "clang", CLANG_VERSION_STRING); 1628 1629 return P.str(); 1630 } 1631 1632 static void ParseHeaderSearchArgs(HeaderSearchOptions &Opts, ArgList &Args, 1633 const std::string &WorkingDir) { 1634 using namespace options; 1635 Opts.Sysroot = Args.getLastArgValue(OPT_isysroot, "/"); 1636 Opts.Verbose = Args.hasArg(OPT_v); 1637 Opts.UseBuiltinIncludes = !Args.hasArg(OPT_nobuiltininc); 1638 Opts.UseStandardSystemIncludes = !Args.hasArg(OPT_nostdsysteminc); 1639 Opts.UseStandardCXXIncludes = !Args.hasArg(OPT_nostdincxx); 1640 if (const Arg *A = Args.getLastArg(OPT_stdlib_EQ)) 1641 Opts.UseLibcxx = (strcmp(A->getValue(), "libc++") == 0); 1642 Opts.ResourceDir = Args.getLastArgValue(OPT_resource_dir); 1643 1644 // Canonicalize -fmodules-cache-path before storing it. 1645 SmallString<128> P(Args.getLastArgValue(OPT_fmodules_cache_path)); 1646 if (!(P.empty() || llvm::sys::path::is_absolute(P))) { 1647 if (WorkingDir.empty()) 1648 llvm::sys::fs::make_absolute(P); 1649 else 1650 llvm::sys::fs::make_absolute(WorkingDir, P); 1651 } 1652 llvm::sys::path::remove_dots(P); 1653 Opts.ModuleCachePath = P.str(); 1654 1655 Opts.ModuleUserBuildPath = Args.getLastArgValue(OPT_fmodules_user_build_path); 1656 // Only the -fmodule-file=<name>=<file> form. 1657 for (const Arg *A : Args.filtered(OPT_fmodule_file)) { 1658 StringRef Val = A->getValue(); 1659 if (Val.find('=') != StringRef::npos) 1660 Opts.PrebuiltModuleFiles.insert(Val.split('=')); 1661 } 1662 for (const Arg *A : Args.filtered(OPT_fprebuilt_module_path)) 1663 Opts.AddPrebuiltModulePath(A->getValue()); 1664 Opts.DisableModuleHash = Args.hasArg(OPT_fdisable_module_hash); 1665 Opts.ModulesHashContent = Args.hasArg(OPT_fmodules_hash_content); 1666 Opts.ModulesValidateDiagnosticOptions = 1667 !Args.hasArg(OPT_fmodules_disable_diagnostic_validation); 1668 Opts.ImplicitModuleMaps = Args.hasArg(OPT_fimplicit_module_maps); 1669 Opts.ModuleMapFileHomeIsCwd = Args.hasArg(OPT_fmodule_map_file_home_is_cwd); 1670 Opts.ModuleCachePruneInterval = 1671 getLastArgIntValue(Args, OPT_fmodules_prune_interval, 7 * 24 * 60 * 60); 1672 Opts.ModuleCachePruneAfter = 1673 getLastArgIntValue(Args, OPT_fmodules_prune_after, 31 * 24 * 60 * 60); 1674 Opts.ModulesValidateOncePerBuildSession = 1675 Args.hasArg(OPT_fmodules_validate_once_per_build_session); 1676 Opts.BuildSessionTimestamp = 1677 getLastArgUInt64Value(Args, OPT_fbuild_session_timestamp, 0); 1678 Opts.ModulesValidateSystemHeaders = 1679 Args.hasArg(OPT_fmodules_validate_system_headers); 1680 if (const Arg *A = Args.getLastArg(OPT_fmodule_format_EQ)) 1681 Opts.ModuleFormat = A->getValue(); 1682 1683 for (const Arg *A : Args.filtered(OPT_fmodules_ignore_macro)) { 1684 StringRef MacroDef = A->getValue(); 1685 Opts.ModulesIgnoreMacros.insert( 1686 llvm::CachedHashString(MacroDef.split('=').first)); 1687 } 1688 1689 // Add -I..., -F..., and -index-header-map options in order. 1690 bool IsIndexHeaderMap = false; 1691 bool IsSysrootSpecified = 1692 Args.hasArg(OPT__sysroot_EQ) || Args.hasArg(OPT_isysroot); 1693 for (const Arg *A : Args.filtered(OPT_I, OPT_F, OPT_index_header_map)) { 1694 if (A->getOption().matches(OPT_index_header_map)) { 1695 // -index-header-map applies to the next -I or -F. 1696 IsIndexHeaderMap = true; 1697 continue; 1698 } 1699 1700 frontend::IncludeDirGroup Group = 1701 IsIndexHeaderMap ? frontend::IndexHeaderMap : frontend::Angled; 1702 1703 bool IsFramework = A->getOption().matches(OPT_F); 1704 std::string Path = A->getValue(); 1705 1706 if (IsSysrootSpecified && !IsFramework && A->getValue()[0] == '=') { 1707 SmallString<32> Buffer; 1708 llvm::sys::path::append(Buffer, Opts.Sysroot, 1709 llvm::StringRef(A->getValue()).substr(1)); 1710 Path = Buffer.str(); 1711 } 1712 1713 Opts.AddPath(Path, Group, IsFramework, 1714 /*IgnoreSysroot*/ true); 1715 IsIndexHeaderMap = false; 1716 } 1717 1718 // Add -iprefix/-iwithprefix/-iwithprefixbefore options. 1719 StringRef Prefix = ""; // FIXME: This isn't the correct default prefix. 1720 for (const Arg *A : 1721 Args.filtered(OPT_iprefix, OPT_iwithprefix, OPT_iwithprefixbefore)) { 1722 if (A->getOption().matches(OPT_iprefix)) 1723 Prefix = A->getValue(); 1724 else if (A->getOption().matches(OPT_iwithprefix)) 1725 Opts.AddPath(Prefix.str() + A->getValue(), frontend::After, false, true); 1726 else 1727 Opts.AddPath(Prefix.str() + A->getValue(), frontend::Angled, false, true); 1728 } 1729 1730 for (const Arg *A : Args.filtered(OPT_idirafter)) 1731 Opts.AddPath(A->getValue(), frontend::After, false, true); 1732 for (const Arg *A : Args.filtered(OPT_iquote)) 1733 Opts.AddPath(A->getValue(), frontend::Quoted, false, true); 1734 for (const Arg *A : Args.filtered(OPT_isystem, OPT_iwithsysroot)) 1735 Opts.AddPath(A->getValue(), frontend::System, false, 1736 !A->getOption().matches(OPT_iwithsysroot)); 1737 for (const Arg *A : Args.filtered(OPT_iframework)) 1738 Opts.AddPath(A->getValue(), frontend::System, true, true); 1739 for (const Arg *A : Args.filtered(OPT_iframeworkwithsysroot)) 1740 Opts.AddPath(A->getValue(), frontend::System, /*IsFramework=*/true, 1741 /*IgnoreSysRoot=*/false); 1742 1743 // Add the paths for the various language specific isystem flags. 1744 for (const Arg *A : Args.filtered(OPT_c_isystem)) 1745 Opts.AddPath(A->getValue(), frontend::CSystem, false, true); 1746 for (const Arg *A : Args.filtered(OPT_cxx_isystem)) 1747 Opts.AddPath(A->getValue(), frontend::CXXSystem, false, true); 1748 for (const Arg *A : Args.filtered(OPT_objc_isystem)) 1749 Opts.AddPath(A->getValue(), frontend::ObjCSystem, false,true); 1750 for (const Arg *A : Args.filtered(OPT_objcxx_isystem)) 1751 Opts.AddPath(A->getValue(), frontend::ObjCXXSystem, false, true); 1752 1753 // Add the internal paths from a driver that detects standard include paths. 1754 for (const Arg *A : 1755 Args.filtered(OPT_internal_isystem, OPT_internal_externc_isystem)) { 1756 frontend::IncludeDirGroup Group = frontend::System; 1757 if (A->getOption().matches(OPT_internal_externc_isystem)) 1758 Group = frontend::ExternCSystem; 1759 Opts.AddPath(A->getValue(), Group, false, true); 1760 } 1761 1762 // Add the path prefixes which are implicitly treated as being system headers. 1763 for (const Arg *A : 1764 Args.filtered(OPT_system_header_prefix, OPT_no_system_header_prefix)) 1765 Opts.AddSystemHeaderPrefix( 1766 A->getValue(), A->getOption().matches(OPT_system_header_prefix)); 1767 1768 for (const Arg *A : Args.filtered(OPT_ivfsoverlay)) 1769 Opts.AddVFSOverlayFile(A->getValue()); 1770 } 1771 1772 void CompilerInvocation::setLangDefaults(LangOptions &Opts, InputKind IK, 1773 const llvm::Triple &T, 1774 PreprocessorOptions &PPOpts, 1775 LangStandard::Kind LangStd) { 1776 // Set some properties which depend solely on the input kind; it would be nice 1777 // to move these to the language standard, and have the driver resolve the 1778 // input kind + language standard. 1779 // 1780 // FIXME: Perhaps a better model would be for a single source file to have 1781 // multiple language standards (C / C++ std, ObjC std, OpenCL std, OpenMP std) 1782 // simultaneously active? 1783 if (IK.getLanguage() == InputKind::Asm) { 1784 Opts.AsmPreprocessor = 1; 1785 } else if (IK.isObjectiveC()) { 1786 Opts.ObjC1 = Opts.ObjC2 = 1; 1787 } 1788 1789 if (LangStd == LangStandard::lang_unspecified) { 1790 // Based on the base language, pick one. 1791 switch (IK.getLanguage()) { 1792 case InputKind::Unknown: 1793 case InputKind::LLVM_IR: 1794 llvm_unreachable("Invalid input kind!"); 1795 case InputKind::OpenCL: 1796 LangStd = LangStandard::lang_opencl10; 1797 break; 1798 case InputKind::CUDA: 1799 LangStd = LangStandard::lang_cuda; 1800 break; 1801 case InputKind::Asm: 1802 case InputKind::C: 1803 // The PS4 uses C99 as the default C standard. 1804 if (T.isPS4()) 1805 LangStd = LangStandard::lang_gnu99; 1806 else 1807 LangStd = LangStandard::lang_gnu11; 1808 break; 1809 case InputKind::ObjC: 1810 LangStd = LangStandard::lang_gnu11; 1811 break; 1812 case InputKind::CXX: 1813 case InputKind::ObjCXX: 1814 LangStd = LangStandard::lang_gnucxx14; 1815 break; 1816 case InputKind::RenderScript: 1817 LangStd = LangStandard::lang_c99; 1818 break; 1819 } 1820 } 1821 1822 const LangStandard &Std = LangStandard::getLangStandardForKind(LangStd); 1823 Opts.LineComment = Std.hasLineComments(); 1824 Opts.C99 = Std.isC99(); 1825 Opts.C11 = Std.isC11(); 1826 Opts.C17 = Std.isC17(); 1827 Opts.CPlusPlus = Std.isCPlusPlus(); 1828 Opts.CPlusPlus11 = Std.isCPlusPlus11(); 1829 Opts.CPlusPlus14 = Std.isCPlusPlus14(); 1830 Opts.CPlusPlus17 = Std.isCPlusPlus17(); 1831 Opts.CPlusPlus2a = Std.isCPlusPlus2a(); 1832 Opts.Digraphs = Std.hasDigraphs(); 1833 Opts.GNUMode = Std.isGNUMode(); 1834 Opts.GNUInline = !Opts.C99 && !Opts.CPlusPlus; 1835 Opts.HexFloats = Std.hasHexFloats(); 1836 Opts.ImplicitInt = Std.hasImplicitInt(); 1837 1838 // Set OpenCL Version. 1839 Opts.OpenCL = Std.isOpenCL(); 1840 if (LangStd == LangStandard::lang_opencl10) 1841 Opts.OpenCLVersion = 100; 1842 else if (LangStd == LangStandard::lang_opencl11) 1843 Opts.OpenCLVersion = 110; 1844 else if (LangStd == LangStandard::lang_opencl12) 1845 Opts.OpenCLVersion = 120; 1846 else if (LangStd == LangStandard::lang_opencl20) 1847 Opts.OpenCLVersion = 200; 1848 1849 // OpenCL has some additional defaults. 1850 if (Opts.OpenCL) { 1851 Opts.AltiVec = 0; 1852 Opts.ZVector = 0; 1853 Opts.LaxVectorConversions = 0; 1854 Opts.setDefaultFPContractMode(LangOptions::FPC_On); 1855 Opts.NativeHalfType = 1; 1856 Opts.NativeHalfArgsAndReturns = 1; 1857 // Include default header file for OpenCL. 1858 if (Opts.IncludeDefaultHeader) { 1859 PPOpts.Includes.push_back("opencl-c.h"); 1860 } 1861 } 1862 1863 Opts.CUDA = IK.getLanguage() == InputKind::CUDA; 1864 if (Opts.CUDA) 1865 // Set default FP_CONTRACT to FAST. 1866 Opts.setDefaultFPContractMode(LangOptions::FPC_Fast); 1867 1868 Opts.RenderScript = IK.getLanguage() == InputKind::RenderScript; 1869 if (Opts.RenderScript) { 1870 Opts.NativeHalfType = 1; 1871 Opts.NativeHalfArgsAndReturns = 1; 1872 } 1873 1874 // OpenCL and C++ both have bool, true, false keywords. 1875 Opts.Bool = Opts.OpenCL || Opts.CPlusPlus; 1876 1877 // OpenCL has half keyword 1878 Opts.Half = Opts.OpenCL; 1879 1880 // C++ has wchar_t keyword. 1881 Opts.WChar = Opts.CPlusPlus; 1882 1883 Opts.GNUKeywords = Opts.GNUMode; 1884 Opts.CXXOperatorNames = Opts.CPlusPlus; 1885 1886 Opts.AlignedAllocation = Opts.CPlusPlus17; 1887 1888 Opts.DollarIdents = !Opts.AsmPreprocessor; 1889 } 1890 1891 /// Attempt to parse a visibility value out of the given argument. 1892 static Visibility parseVisibility(Arg *arg, ArgList &args, 1893 DiagnosticsEngine &diags) { 1894 StringRef value = arg->getValue(); 1895 if (value == "default") { 1896 return DefaultVisibility; 1897 } else if (value == "hidden" || value == "internal") { 1898 return HiddenVisibility; 1899 } else if (value == "protected") { 1900 // FIXME: diagnose if target does not support protected visibility 1901 return ProtectedVisibility; 1902 } 1903 1904 diags.Report(diag::err_drv_invalid_value) 1905 << arg->getAsString(args) << value; 1906 return DefaultVisibility; 1907 } 1908 1909 /// Check if input file kind and language standard are compatible. 1910 static bool IsInputCompatibleWithStandard(InputKind IK, 1911 const LangStandard &S) { 1912 switch (IK.getLanguage()) { 1913 case InputKind::Unknown: 1914 case InputKind::LLVM_IR: 1915 llvm_unreachable("should not parse language flags for this input"); 1916 1917 case InputKind::C: 1918 case InputKind::ObjC: 1919 case InputKind::RenderScript: 1920 return S.getLanguage() == InputKind::C; 1921 1922 case InputKind::OpenCL: 1923 return S.getLanguage() == InputKind::OpenCL; 1924 1925 case InputKind::CXX: 1926 case InputKind::ObjCXX: 1927 return S.getLanguage() == InputKind::CXX; 1928 1929 case InputKind::CUDA: 1930 // FIXME: What -std= values should be permitted for CUDA compilations? 1931 return S.getLanguage() == InputKind::CUDA || 1932 S.getLanguage() == InputKind::CXX; 1933 1934 case InputKind::Asm: 1935 // Accept (and ignore) all -std= values. 1936 // FIXME: The -std= value is not ignored; it affects the tokenization 1937 // and preprocessing rules if we're preprocessing this asm input. 1938 return true; 1939 } 1940 1941 llvm_unreachable("unexpected input language"); 1942 } 1943 1944 /// Get language name for given input kind. 1945 static const StringRef GetInputKindName(InputKind IK) { 1946 switch (IK.getLanguage()) { 1947 case InputKind::C: 1948 return "C"; 1949 case InputKind::ObjC: 1950 return "Objective-C"; 1951 case InputKind::CXX: 1952 return "C++"; 1953 case InputKind::ObjCXX: 1954 return "Objective-C++"; 1955 case InputKind::OpenCL: 1956 return "OpenCL"; 1957 case InputKind::CUDA: 1958 return "CUDA"; 1959 case InputKind::RenderScript: 1960 return "RenderScript"; 1961 1962 case InputKind::Asm: 1963 return "Asm"; 1964 case InputKind::LLVM_IR: 1965 return "LLVM IR"; 1966 1967 case InputKind::Unknown: 1968 break; 1969 } 1970 llvm_unreachable("unknown input language"); 1971 } 1972 1973 static void ParseLangArgs(LangOptions &Opts, ArgList &Args, InputKind IK, 1974 const TargetOptions &TargetOpts, 1975 PreprocessorOptions &PPOpts, 1976 DiagnosticsEngine &Diags) { 1977 // FIXME: Cleanup per-file based stuff. 1978 LangStandard::Kind LangStd = LangStandard::lang_unspecified; 1979 if (const Arg *A = Args.getLastArg(OPT_std_EQ)) { 1980 LangStd = llvm::StringSwitch<LangStandard::Kind>(A->getValue()) 1981 #define LANGSTANDARD(id, name, lang, desc, features) \ 1982 .Case(name, LangStandard::lang_##id) 1983 #define LANGSTANDARD_ALIAS(id, alias) \ 1984 .Case(alias, LangStandard::lang_##id) 1985 #include "clang/Frontend/LangStandards.def" 1986 .Default(LangStandard::lang_unspecified); 1987 if (LangStd == LangStandard::lang_unspecified) { 1988 Diags.Report(diag::err_drv_invalid_value) 1989 << A->getAsString(Args) << A->getValue(); 1990 // Report supported standards with short description. 1991 for (unsigned KindValue = 0; 1992 KindValue != LangStandard::lang_unspecified; 1993 ++KindValue) { 1994 const LangStandard &Std = LangStandard::getLangStandardForKind( 1995 static_cast<LangStandard::Kind>(KindValue)); 1996 if (IsInputCompatibleWithStandard(IK, Std)) { 1997 auto Diag = Diags.Report(diag::note_drv_use_standard); 1998 Diag << Std.getName() << Std.getDescription(); 1999 unsigned NumAliases = 0; 2000 #define LANGSTANDARD(id, name, lang, desc, features) 2001 #define LANGSTANDARD_ALIAS(id, alias) \ 2002 if (KindValue == LangStandard::lang_##id) ++NumAliases; 2003 #define LANGSTANDARD_ALIAS_DEPR(id, alias) 2004 #include "clang/Frontend/LangStandards.def" 2005 Diag << NumAliases; 2006 #define LANGSTANDARD(id, name, lang, desc, features) 2007 #define LANGSTANDARD_ALIAS(id, alias) \ 2008 if (KindValue == LangStandard::lang_##id) Diag << alias; 2009 #define LANGSTANDARD_ALIAS_DEPR(id, alias) 2010 #include "clang/Frontend/LangStandards.def" 2011 } 2012 } 2013 } else { 2014 // Valid standard, check to make sure language and standard are 2015 // compatible. 2016 const LangStandard &Std = LangStandard::getLangStandardForKind(LangStd); 2017 if (!IsInputCompatibleWithStandard(IK, Std)) { 2018 Diags.Report(diag::err_drv_argument_not_allowed_with) 2019 << A->getAsString(Args) << GetInputKindName(IK); 2020 } 2021 } 2022 } 2023 2024 // -cl-std only applies for OpenCL language standards. 2025 // Override the -std option in this case. 2026 if (const Arg *A = Args.getLastArg(OPT_cl_std_EQ)) { 2027 LangStandard::Kind OpenCLLangStd 2028 = llvm::StringSwitch<LangStandard::Kind>(A->getValue()) 2029 .Cases("cl", "CL", LangStandard::lang_opencl10) 2030 .Cases("cl1.1", "CL1.1", LangStandard::lang_opencl11) 2031 .Cases("cl1.2", "CL1.2", LangStandard::lang_opencl12) 2032 .Cases("cl2.0", "CL2.0", LangStandard::lang_opencl20) 2033 .Default(LangStandard::lang_unspecified); 2034 2035 if (OpenCLLangStd == LangStandard::lang_unspecified) { 2036 Diags.Report(diag::err_drv_invalid_value) 2037 << A->getAsString(Args) << A->getValue(); 2038 } 2039 else 2040 LangStd = OpenCLLangStd; 2041 } 2042 2043 Opts.IncludeDefaultHeader = Args.hasArg(OPT_finclude_default_header); 2044 2045 llvm::Triple T(TargetOpts.Triple); 2046 CompilerInvocation::setLangDefaults(Opts, IK, T, PPOpts, LangStd); 2047 2048 // -cl-strict-aliasing needs to emit diagnostic in the case where CL > 1.0. 2049 // This option should be deprecated for CL > 1.0 because 2050 // this option was added for compatibility with OpenCL 1.0. 2051 if (Args.getLastArg(OPT_cl_strict_aliasing) 2052 && Opts.OpenCLVersion > 100) { 2053 std::string VerSpec = llvm::to_string(Opts.OpenCLVersion / 100) + 2054 std::string(".") + 2055 llvm::to_string((Opts.OpenCLVersion % 100) / 10); 2056 Diags.Report(diag::warn_option_invalid_ocl_version) 2057 << VerSpec << Args.getLastArg(OPT_cl_strict_aliasing)->getAsString(Args); 2058 } 2059 2060 // We abuse '-f[no-]gnu-keywords' to force overriding all GNU-extension 2061 // keywords. This behavior is provided by GCC's poorly named '-fasm' flag, 2062 // while a subset (the non-C++ GNU keywords) is provided by GCC's 2063 // '-fgnu-keywords'. Clang conflates the two for simplicity under the single 2064 // name, as it doesn't seem a useful distinction. 2065 Opts.GNUKeywords = Args.hasFlag(OPT_fgnu_keywords, OPT_fno_gnu_keywords, 2066 Opts.GNUKeywords); 2067 2068 if (Args.hasArg(OPT_fno_operator_names)) 2069 Opts.CXXOperatorNames = 0; 2070 2071 if (Args.hasArg(OPT_fcuda_is_device)) 2072 Opts.CUDAIsDevice = 1; 2073 2074 if (Args.hasArg(OPT_fcuda_allow_variadic_functions)) 2075 Opts.CUDAAllowVariadicFunctions = 1; 2076 2077 if (Args.hasArg(OPT_fno_cuda_host_device_constexpr)) 2078 Opts.CUDAHostDeviceConstexpr = 0; 2079 2080 if (Opts.CUDAIsDevice && Args.hasArg(OPT_fcuda_flush_denormals_to_zero)) 2081 Opts.CUDADeviceFlushDenormalsToZero = 1; 2082 2083 if (Opts.CUDAIsDevice && Args.hasArg(OPT_fcuda_approx_transcendentals)) 2084 Opts.CUDADeviceApproxTranscendentals = 1; 2085 2086 Opts.CUDARelocatableDeviceCode = Args.hasArg(OPT_fcuda_rdc); 2087 2088 if (Opts.ObjC1) { 2089 if (Arg *arg = Args.getLastArg(OPT_fobjc_runtime_EQ)) { 2090 StringRef value = arg->getValue(); 2091 if (Opts.ObjCRuntime.tryParse(value)) 2092 Diags.Report(diag::err_drv_unknown_objc_runtime) << value; 2093 } 2094 2095 if (Args.hasArg(OPT_fobjc_gc_only)) 2096 Opts.setGC(LangOptions::GCOnly); 2097 else if (Args.hasArg(OPT_fobjc_gc)) 2098 Opts.setGC(LangOptions::HybridGC); 2099 else if (Args.hasArg(OPT_fobjc_arc)) { 2100 Opts.ObjCAutoRefCount = 1; 2101 if (!Opts.ObjCRuntime.allowsARC()) 2102 Diags.Report(diag::err_arc_unsupported_on_runtime); 2103 } 2104 2105 // ObjCWeakRuntime tracks whether the runtime supports __weak, not 2106 // whether the feature is actually enabled. This is predominantly 2107 // determined by -fobjc-runtime, but we allow it to be overridden 2108 // from the command line for testing purposes. 2109 if (Args.hasArg(OPT_fobjc_runtime_has_weak)) 2110 Opts.ObjCWeakRuntime = 1; 2111 else 2112 Opts.ObjCWeakRuntime = Opts.ObjCRuntime.allowsWeak(); 2113 2114 // ObjCWeak determines whether __weak is actually enabled. 2115 // Note that we allow -fno-objc-weak to disable this even in ARC mode. 2116 if (auto weakArg = Args.getLastArg(OPT_fobjc_weak, OPT_fno_objc_weak)) { 2117 if (!weakArg->getOption().matches(OPT_fobjc_weak)) { 2118 assert(!Opts.ObjCWeak); 2119 } else if (Opts.getGC() != LangOptions::NonGC) { 2120 Diags.Report(diag::err_objc_weak_with_gc); 2121 } else if (!Opts.ObjCWeakRuntime) { 2122 Diags.Report(diag::err_objc_weak_unsupported); 2123 } else { 2124 Opts.ObjCWeak = 1; 2125 } 2126 } else if (Opts.ObjCAutoRefCount) { 2127 Opts.ObjCWeak = Opts.ObjCWeakRuntime; 2128 } 2129 2130 if (Args.hasArg(OPT_fno_objc_infer_related_result_type)) 2131 Opts.ObjCInferRelatedResultType = 0; 2132 2133 if (Args.hasArg(OPT_fobjc_subscripting_legacy_runtime)) 2134 Opts.ObjCSubscriptingLegacyRuntime = 2135 (Opts.ObjCRuntime.getKind() == ObjCRuntime::FragileMacOSX); 2136 } 2137 2138 if (Args.hasArg(OPT_fgnu89_inline)) { 2139 if (Opts.CPlusPlus) 2140 Diags.Report(diag::err_drv_argument_not_allowed_with) 2141 << "-fgnu89-inline" << GetInputKindName(IK); 2142 else 2143 Opts.GNUInline = 1; 2144 } 2145 2146 if (Args.hasArg(OPT_fapple_kext)) { 2147 if (!Opts.CPlusPlus) 2148 Diags.Report(diag::warn_c_kext); 2149 else 2150 Opts.AppleKext = 1; 2151 } 2152 2153 if (Args.hasArg(OPT_print_ivar_layout)) 2154 Opts.ObjCGCBitmapPrint = 1; 2155 if (Args.hasArg(OPT_fno_constant_cfstrings)) 2156 Opts.NoConstantCFStrings = 1; 2157 2158 if (Args.hasArg(OPT_fzvector)) 2159 Opts.ZVector = 1; 2160 2161 if (Args.hasArg(OPT_pthread)) 2162 Opts.POSIXThreads = 1; 2163 2164 // The value-visibility mode defaults to "default". 2165 if (Arg *visOpt = Args.getLastArg(OPT_fvisibility)) { 2166 Opts.setValueVisibilityMode(parseVisibility(visOpt, Args, Diags)); 2167 } else { 2168 Opts.setValueVisibilityMode(DefaultVisibility); 2169 } 2170 2171 // The type-visibility mode defaults to the value-visibility mode. 2172 if (Arg *typeVisOpt = Args.getLastArg(OPT_ftype_visibility)) { 2173 Opts.setTypeVisibilityMode(parseVisibility(typeVisOpt, Args, Diags)); 2174 } else { 2175 Opts.setTypeVisibilityMode(Opts.getValueVisibilityMode()); 2176 } 2177 2178 if (Args.hasArg(OPT_fvisibility_inlines_hidden)) 2179 Opts.InlineVisibilityHidden = 1; 2180 2181 if (Args.hasArg(OPT_ftrapv)) { 2182 Opts.setSignedOverflowBehavior(LangOptions::SOB_Trapping); 2183 // Set the handler, if one is specified. 2184 Opts.OverflowHandler = 2185 Args.getLastArgValue(OPT_ftrapv_handler); 2186 } 2187 else if (Args.hasArg(OPT_fwrapv)) 2188 Opts.setSignedOverflowBehavior(LangOptions::SOB_Defined); 2189 2190 Opts.MSVCCompat = Args.hasArg(OPT_fms_compatibility); 2191 Opts.MicrosoftExt = Opts.MSVCCompat || Args.hasArg(OPT_fms_extensions); 2192 Opts.AsmBlocks = Args.hasArg(OPT_fasm_blocks) || Opts.MicrosoftExt; 2193 Opts.MSCompatibilityVersion = 0; 2194 if (const Arg *A = Args.getLastArg(OPT_fms_compatibility_version)) { 2195 VersionTuple VT; 2196 if (VT.tryParse(A->getValue())) 2197 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) 2198 << A->getValue(); 2199 Opts.MSCompatibilityVersion = VT.getMajor() * 10000000 + 2200 VT.getMinor().getValueOr(0) * 100000 + 2201 VT.getSubminor().getValueOr(0); 2202 } 2203 2204 // Mimicing gcc's behavior, trigraphs are only enabled if -trigraphs 2205 // is specified, or -std is set to a conforming mode. 2206 // Trigraphs are disabled by default in c++1z onwards. 2207 Opts.Trigraphs = !Opts.GNUMode && !Opts.MSVCCompat && !Opts.CPlusPlus17; 2208 Opts.Trigraphs = 2209 Args.hasFlag(OPT_ftrigraphs, OPT_fno_trigraphs, Opts.Trigraphs); 2210 2211 Opts.DollarIdents = Args.hasFlag(OPT_fdollars_in_identifiers, 2212 OPT_fno_dollars_in_identifiers, 2213 Opts.DollarIdents); 2214 Opts.PascalStrings = Args.hasArg(OPT_fpascal_strings); 2215 Opts.VtorDispMode = getLastArgIntValue(Args, OPT_vtordisp_mode_EQ, 1, Diags); 2216 Opts.Borland = Args.hasArg(OPT_fborland_extensions); 2217 Opts.WritableStrings = Args.hasArg(OPT_fwritable_strings); 2218 Opts.ConstStrings = Args.hasFlag(OPT_fconst_strings, OPT_fno_const_strings, 2219 Opts.ConstStrings); 2220 if (Args.hasArg(OPT_fno_lax_vector_conversions)) 2221 Opts.LaxVectorConversions = 0; 2222 if (Args.hasArg(OPT_fno_threadsafe_statics)) 2223 Opts.ThreadsafeStatics = 0; 2224 Opts.Exceptions = Args.hasArg(OPT_fexceptions); 2225 Opts.ObjCExceptions = Args.hasArg(OPT_fobjc_exceptions); 2226 Opts.CXXExceptions = Args.hasArg(OPT_fcxx_exceptions); 2227 2228 // Handle exception personalities 2229 Arg *A = Args.getLastArg(options::OPT_fsjlj_exceptions, 2230 options::OPT_fseh_exceptions, 2231 options::OPT_fdwarf_exceptions); 2232 if (A) { 2233 const Option &Opt = A->getOption(); 2234 Opts.SjLjExceptions = Opt.matches(options::OPT_fsjlj_exceptions); 2235 Opts.SEHExceptions = Opt.matches(options::OPT_fseh_exceptions); 2236 Opts.DWARFExceptions = Opt.matches(options::OPT_fdwarf_exceptions); 2237 } 2238 2239 Opts.ExternCNoUnwind = Args.hasArg(OPT_fexternc_nounwind); 2240 Opts.TraditionalCPP = Args.hasArg(OPT_traditional_cpp); 2241 2242 Opts.RTTI = Opts.CPlusPlus && !Args.hasArg(OPT_fno_rtti); 2243 Opts.RTTIData = Opts.RTTI && !Args.hasArg(OPT_fno_rtti_data); 2244 Opts.Blocks = Args.hasArg(OPT_fblocks) || (Opts.OpenCL 2245 && Opts.OpenCLVersion >= 200); 2246 Opts.BlocksRuntimeOptional = Args.hasArg(OPT_fblocks_runtime_optional); 2247 Opts.CoroutinesTS = Args.hasArg(OPT_fcoroutines_ts); 2248 2249 // Enable [[]] attributes in C++11 by default. 2250 Opts.DoubleSquareBracketAttributes = 2251 Args.hasFlag(OPT_fdouble_square_bracket_attributes, 2252 OPT_fno_double_square_bracket_attributes, Opts.CPlusPlus11); 2253 2254 Opts.ModulesTS = Args.hasArg(OPT_fmodules_ts); 2255 Opts.Modules = Args.hasArg(OPT_fmodules) || Opts.ModulesTS; 2256 Opts.ModulesStrictDeclUse = Args.hasArg(OPT_fmodules_strict_decluse); 2257 Opts.ModulesDeclUse = 2258 Args.hasArg(OPT_fmodules_decluse) || Opts.ModulesStrictDeclUse; 2259 Opts.ModulesLocalVisibility = 2260 Args.hasArg(OPT_fmodules_local_submodule_visibility) || Opts.ModulesTS; 2261 Opts.ModulesCodegen = Args.hasArg(OPT_fmodules_codegen); 2262 Opts.ModulesDebugInfo = Args.hasArg(OPT_fmodules_debuginfo); 2263 Opts.ModulesSearchAll = Opts.Modules && 2264 !Args.hasArg(OPT_fno_modules_search_all) && 2265 Args.hasArg(OPT_fmodules_search_all); 2266 Opts.ModulesErrorRecovery = !Args.hasArg(OPT_fno_modules_error_recovery); 2267 Opts.ImplicitModules = !Args.hasArg(OPT_fno_implicit_modules); 2268 Opts.CharIsSigned = Opts.OpenCL || !Args.hasArg(OPT_fno_signed_char); 2269 Opts.WChar = Opts.CPlusPlus && !Args.hasArg(OPT_fno_wchar); 2270 if (const Arg *A = Args.getLastArg(OPT_fwchar_type_EQ)) { 2271 Opts.WCharSize = llvm::StringSwitch<unsigned>(A->getValue()) 2272 .Case("char", 1) 2273 .Case("short", 2) 2274 .Case("int", 4) 2275 .Default(0); 2276 if (Opts.WCharSize == 0) 2277 Diags.Report(diag::err_fe_invalid_wchar_type) << A->getValue(); 2278 } 2279 Opts.WCharIsSigned = Args.hasFlag(OPT_fsigned_wchar, OPT_fno_signed_wchar, true); 2280 Opts.ShortEnums = Args.hasArg(OPT_fshort_enums); 2281 Opts.Freestanding = Args.hasArg(OPT_ffreestanding); 2282 Opts.NoBuiltin = Args.hasArg(OPT_fno_builtin) || Opts.Freestanding; 2283 if (!Opts.NoBuiltin) 2284 getAllNoBuiltinFuncValues(Args, Opts.NoBuiltinFuncs); 2285 Opts.NoMathBuiltin = Args.hasArg(OPT_fno_math_builtin); 2286 Opts.RelaxedTemplateTemplateArgs = 2287 Args.hasArg(OPT_frelaxed_template_template_args); 2288 Opts.SizedDeallocation = Args.hasArg(OPT_fsized_deallocation); 2289 Opts.AlignedAllocation = 2290 Args.hasFlag(OPT_faligned_allocation, OPT_fno_aligned_allocation, 2291 Opts.AlignedAllocation); 2292 Opts.AlignedAllocationUnavailable = 2293 Opts.AlignedAllocation && Args.hasArg(OPT_aligned_alloc_unavailable); 2294 Opts.NewAlignOverride = 2295 getLastArgIntValue(Args, OPT_fnew_alignment_EQ, 0, Diags); 2296 if (Opts.NewAlignOverride && !llvm::isPowerOf2_32(Opts.NewAlignOverride)) { 2297 Arg *A = Args.getLastArg(OPT_fnew_alignment_EQ); 2298 Diags.Report(diag::err_fe_invalid_alignment) << A->getAsString(Args) 2299 << A->getValue(); 2300 Opts.NewAlignOverride = 0; 2301 } 2302 Opts.ConceptsTS = Args.hasArg(OPT_fconcepts_ts); 2303 Opts.HeinousExtensions = Args.hasArg(OPT_fheinous_gnu_extensions); 2304 Opts.AccessControl = !Args.hasArg(OPT_fno_access_control); 2305 Opts.ElideConstructors = !Args.hasArg(OPT_fno_elide_constructors); 2306 Opts.MathErrno = !Opts.OpenCL && Args.hasArg(OPT_fmath_errno); 2307 Opts.InstantiationDepth = 2308 getLastArgIntValue(Args, OPT_ftemplate_depth, 1024, Diags); 2309 Opts.ArrowDepth = 2310 getLastArgIntValue(Args, OPT_foperator_arrow_depth, 256, Diags); 2311 Opts.ConstexprCallDepth = 2312 getLastArgIntValue(Args, OPT_fconstexpr_depth, 512, Diags); 2313 Opts.ConstexprStepLimit = 2314 getLastArgIntValue(Args, OPT_fconstexpr_steps, 1048576, Diags); 2315 Opts.BracketDepth = getLastArgIntValue(Args, OPT_fbracket_depth, 256, Diags); 2316 Opts.DelayedTemplateParsing = Args.hasArg(OPT_fdelayed_template_parsing); 2317 Opts.NumLargeByValueCopy = 2318 getLastArgIntValue(Args, OPT_Wlarge_by_value_copy_EQ, 0, Diags); 2319 Opts.MSBitfields = Args.hasArg(OPT_mms_bitfields); 2320 Opts.ObjCConstantStringClass = 2321 Args.getLastArgValue(OPT_fconstant_string_class); 2322 Opts.ObjCDefaultSynthProperties = 2323 !Args.hasArg(OPT_disable_objc_default_synthesize_properties); 2324 Opts.EncodeExtendedBlockSig = 2325 Args.hasArg(OPT_fencode_extended_block_signature); 2326 Opts.EmitAllDecls = Args.hasArg(OPT_femit_all_decls); 2327 Opts.PackStruct = getLastArgIntValue(Args, OPT_fpack_struct_EQ, 0, Diags); 2328 Opts.MaxTypeAlign = getLastArgIntValue(Args, OPT_fmax_type_align_EQ, 0, Diags); 2329 Opts.AlignDouble = Args.hasArg(OPT_malign_double); 2330 Opts.PICLevel = getLastArgIntValue(Args, OPT_pic_level, 0, Diags); 2331 Opts.PIE = Args.hasArg(OPT_pic_is_pie); 2332 Opts.Static = Args.hasArg(OPT_static_define); 2333 Opts.DumpRecordLayoutsSimple = Args.hasArg(OPT_fdump_record_layouts_simple); 2334 Opts.DumpRecordLayouts = Opts.DumpRecordLayoutsSimple 2335 || Args.hasArg(OPT_fdump_record_layouts); 2336 Opts.DumpVTableLayouts = Args.hasArg(OPT_fdump_vtable_layouts); 2337 Opts.SpellChecking = !Args.hasArg(OPT_fno_spell_checking); 2338 Opts.NoBitFieldTypeAlign = Args.hasArg(OPT_fno_bitfield_type_align); 2339 Opts.SinglePrecisionConstants = Args.hasArg(OPT_cl_single_precision_constant); 2340 Opts.FastRelaxedMath = Args.hasArg(OPT_cl_fast_relaxed_math); 2341 Opts.HexagonQdsp6Compat = Args.hasArg(OPT_mqdsp6_compat); 2342 Opts.FakeAddressSpaceMap = Args.hasArg(OPT_ffake_address_space_map); 2343 Opts.ParseUnknownAnytype = Args.hasArg(OPT_funknown_anytype); 2344 Opts.DebuggerSupport = Args.hasArg(OPT_fdebugger_support); 2345 Opts.DebuggerCastResultToId = Args.hasArg(OPT_fdebugger_cast_result_to_id); 2346 Opts.DebuggerObjCLiteral = Args.hasArg(OPT_fdebugger_objc_literal); 2347 Opts.ApplePragmaPack = Args.hasArg(OPT_fapple_pragma_pack); 2348 Opts.CurrentModule = Args.getLastArgValue(OPT_fmodule_name_EQ); 2349 Opts.AppExt = Args.hasArg(OPT_fapplication_extension); 2350 Opts.ModuleFeatures = Args.getAllArgValues(OPT_fmodule_feature); 2351 std::sort(Opts.ModuleFeatures.begin(), Opts.ModuleFeatures.end()); 2352 Opts.NativeHalfType |= Args.hasArg(OPT_fnative_half_type); 2353 Opts.NativeHalfArgsAndReturns |= Args.hasArg(OPT_fnative_half_arguments_and_returns); 2354 // Enable HalfArgsAndReturns if present in Args or if NativeHalfArgsAndReturns 2355 // is enabled. 2356 Opts.HalfArgsAndReturns = Args.hasArg(OPT_fallow_half_arguments_and_returns) 2357 | Opts.NativeHalfArgsAndReturns; 2358 Opts.GNUAsm = !Args.hasArg(OPT_fno_gnu_inline_asm); 2359 2360 // __declspec is enabled by default for the PS4 by the driver, and also 2361 // enabled for Microsoft Extensions or Borland Extensions, here. 2362 // 2363 // FIXME: __declspec is also currently enabled for CUDA, but isn't really a 2364 // CUDA extension. However, it is required for supporting 2365 // __clang_cuda_builtin_vars.h, which uses __declspec(property). Once that has 2366 // been rewritten in terms of something more generic, remove the Opts.CUDA 2367 // term here. 2368 Opts.DeclSpecKeyword = 2369 Args.hasFlag(OPT_fdeclspec, OPT_fno_declspec, 2370 (Opts.MicrosoftExt || Opts.Borland || Opts.CUDA)); 2371 2372 if (Arg *A = Args.getLastArg(OPT_faddress_space_map_mangling_EQ)) { 2373 switch (llvm::StringSwitch<unsigned>(A->getValue()) 2374 .Case("target", LangOptions::ASMM_Target) 2375 .Case("no", LangOptions::ASMM_Off) 2376 .Case("yes", LangOptions::ASMM_On) 2377 .Default(255)) { 2378 default: 2379 Diags.Report(diag::err_drv_invalid_value) 2380 << "-faddress-space-map-mangling=" << A->getValue(); 2381 break; 2382 case LangOptions::ASMM_Target: 2383 Opts.setAddressSpaceMapMangling(LangOptions::ASMM_Target); 2384 break; 2385 case LangOptions::ASMM_On: 2386 Opts.setAddressSpaceMapMangling(LangOptions::ASMM_On); 2387 break; 2388 case LangOptions::ASMM_Off: 2389 Opts.setAddressSpaceMapMangling(LangOptions::ASMM_Off); 2390 break; 2391 } 2392 } 2393 2394 if (Arg *A = Args.getLastArg(OPT_fms_memptr_rep_EQ)) { 2395 LangOptions::PragmaMSPointersToMembersKind InheritanceModel = 2396 llvm::StringSwitch<LangOptions::PragmaMSPointersToMembersKind>( 2397 A->getValue()) 2398 .Case("single", 2399 LangOptions::PPTMK_FullGeneralitySingleInheritance) 2400 .Case("multiple", 2401 LangOptions::PPTMK_FullGeneralityMultipleInheritance) 2402 .Case("virtual", 2403 LangOptions::PPTMK_FullGeneralityVirtualInheritance) 2404 .Default(LangOptions::PPTMK_BestCase); 2405 if (InheritanceModel == LangOptions::PPTMK_BestCase) 2406 Diags.Report(diag::err_drv_invalid_value) 2407 << "-fms-memptr-rep=" << A->getValue(); 2408 2409 Opts.setMSPointerToMemberRepresentationMethod(InheritanceModel); 2410 } 2411 2412 // Check for MS default calling conventions being specified. 2413 if (Arg *A = Args.getLastArg(OPT_fdefault_calling_conv_EQ)) { 2414 LangOptions::DefaultCallingConvention DefaultCC = 2415 llvm::StringSwitch<LangOptions::DefaultCallingConvention>(A->getValue()) 2416 .Case("cdecl", LangOptions::DCC_CDecl) 2417 .Case("fastcall", LangOptions::DCC_FastCall) 2418 .Case("stdcall", LangOptions::DCC_StdCall) 2419 .Case("vectorcall", LangOptions::DCC_VectorCall) 2420 .Case("regcall", LangOptions::DCC_RegCall) 2421 .Default(LangOptions::DCC_None); 2422 if (DefaultCC == LangOptions::DCC_None) 2423 Diags.Report(diag::err_drv_invalid_value) 2424 << "-fdefault-calling-conv=" << A->getValue(); 2425 2426 llvm::Triple T(TargetOpts.Triple); 2427 llvm::Triple::ArchType Arch = T.getArch(); 2428 bool emitError = (DefaultCC == LangOptions::DCC_FastCall || 2429 DefaultCC == LangOptions::DCC_StdCall) && 2430 Arch != llvm::Triple::x86; 2431 emitError |= (DefaultCC == LangOptions::DCC_VectorCall || 2432 DefaultCC == LangOptions::DCC_RegCall) && 2433 !(Arch == llvm::Triple::x86 || Arch == llvm::Triple::x86_64); 2434 if (emitError) 2435 Diags.Report(diag::err_drv_argument_not_allowed_with) 2436 << A->getSpelling() << T.getTriple(); 2437 else 2438 Opts.setDefaultCallingConv(DefaultCC); 2439 } 2440 2441 // -mrtd option 2442 if (Arg *A = Args.getLastArg(OPT_mrtd)) { 2443 if (Opts.getDefaultCallingConv() != LangOptions::DCC_None) 2444 Diags.Report(diag::err_drv_argument_not_allowed_with) 2445 << A->getSpelling() << "-fdefault-calling-conv"; 2446 else { 2447 llvm::Triple T(TargetOpts.Triple); 2448 if (T.getArch() != llvm::Triple::x86) 2449 Diags.Report(diag::err_drv_argument_not_allowed_with) 2450 << A->getSpelling() << T.getTriple(); 2451 else 2452 Opts.setDefaultCallingConv(LangOptions::DCC_StdCall); 2453 } 2454 } 2455 2456 // Check if -fopenmp is specified. 2457 Opts.OpenMP = Args.hasArg(options::OPT_fopenmp) ? 1 : 0; 2458 // Check if -fopenmp-simd is specified. 2459 Opts.OpenMPSimd = !Opts.OpenMP && Args.hasFlag(options::OPT_fopenmp_simd, 2460 options::OPT_fno_openmp_simd, 2461 /*Default=*/false); 2462 Opts.OpenMPUseTLS = 2463 Opts.OpenMP && !Args.hasArg(options::OPT_fnoopenmp_use_tls); 2464 Opts.OpenMPIsDevice = 2465 Opts.OpenMP && Args.hasArg(options::OPT_fopenmp_is_device); 2466 2467 if (Opts.OpenMP || Opts.OpenMPSimd) { 2468 if (int Version = 2469 getLastArgIntValue(Args, OPT_fopenmp_version_EQ, 2470 Opts.OpenMPSimd ? 45 : Opts.OpenMP, Diags)) 2471 Opts.OpenMP = Version; 2472 else if (Opts.OpenMPSimd) 2473 Opts.OpenMP = 45; 2474 // Provide diagnostic when a given target is not expected to be an OpenMP 2475 // device or host. 2476 if (!Opts.OpenMPIsDevice) { 2477 switch (T.getArch()) { 2478 default: 2479 break; 2480 // Add unsupported host targets here: 2481 case llvm::Triple::nvptx: 2482 case llvm::Triple::nvptx64: 2483 Diags.Report(clang::diag::err_drv_omp_host_target_not_supported) 2484 << TargetOpts.Triple; 2485 break; 2486 } 2487 } 2488 } 2489 2490 // Set the flag to prevent the implementation from emitting device exception 2491 // handling code for those requiring so. 2492 if (Opts.OpenMPIsDevice && T.isNVPTX()) { 2493 Opts.Exceptions = 0; 2494 Opts.CXXExceptions = 0; 2495 } 2496 2497 // Get the OpenMP target triples if any. 2498 if (Arg *A = Args.getLastArg(options::OPT_fopenmp_targets_EQ)) { 2499 2500 for (unsigned i = 0; i < A->getNumValues(); ++i) { 2501 llvm::Triple TT(A->getValue(i)); 2502 2503 if (TT.getArch() == llvm::Triple::UnknownArch || 2504 !(TT.getArch() == llvm::Triple::ppc || 2505 TT.getArch() == llvm::Triple::ppc64 || 2506 TT.getArch() == llvm::Triple::ppc64le || 2507 TT.getArch() == llvm::Triple::nvptx || 2508 TT.getArch() == llvm::Triple::nvptx64 || 2509 TT.getArch() == llvm::Triple::x86 || 2510 TT.getArch() == llvm::Triple::x86_64)) 2511 Diags.Report(clang::diag::err_drv_invalid_omp_target) << A->getValue(i); 2512 else 2513 Opts.OMPTargetTriples.push_back(TT); 2514 } 2515 } 2516 2517 // Get OpenMP host file path if any and report if a non existent file is 2518 // found 2519 if (Arg *A = Args.getLastArg(options::OPT_fopenmp_host_ir_file_path)) { 2520 Opts.OMPHostIRFile = A->getValue(); 2521 if (!llvm::sys::fs::exists(Opts.OMPHostIRFile)) 2522 Diags.Report(clang::diag::err_drv_omp_host_ir_file_not_found) 2523 << Opts.OMPHostIRFile; 2524 } 2525 2526 // Record whether the __DEPRECATED define was requested. 2527 Opts.Deprecated = Args.hasFlag(OPT_fdeprecated_macro, 2528 OPT_fno_deprecated_macro, 2529 Opts.Deprecated); 2530 2531 // FIXME: Eliminate this dependency. 2532 unsigned Opt = getOptimizationLevel(Args, IK, Diags), 2533 OptSize = getOptimizationLevelSize(Args); 2534 Opts.Optimize = Opt != 0; 2535 Opts.OptimizeSize = OptSize != 0; 2536 2537 // This is the __NO_INLINE__ define, which just depends on things like the 2538 // optimization level and -fno-inline, not actually whether the backend has 2539 // inlining enabled. 2540 Opts.NoInlineDefine = !Opts.Optimize; 2541 if (Arg *InlineArg = Args.getLastArg( 2542 options::OPT_finline_functions, options::OPT_finline_hint_functions, 2543 options::OPT_fno_inline_functions, options::OPT_fno_inline)) 2544 if (InlineArg->getOption().matches(options::OPT_fno_inline)) 2545 Opts.NoInlineDefine = true; 2546 2547 Opts.FastMath = Args.hasArg(OPT_ffast_math) || 2548 Args.hasArg(OPT_cl_fast_relaxed_math); 2549 Opts.FiniteMathOnly = Args.hasArg(OPT_ffinite_math_only) || 2550 Args.hasArg(OPT_cl_finite_math_only) || 2551 Args.hasArg(OPT_cl_fast_relaxed_math); 2552 Opts.UnsafeFPMath = Args.hasArg(OPT_menable_unsafe_fp_math) || 2553 Args.hasArg(OPT_cl_unsafe_math_optimizations) || 2554 Args.hasArg(OPT_cl_fast_relaxed_math); 2555 2556 if (Arg *A = Args.getLastArg(OPT_ffp_contract)) { 2557 StringRef Val = A->getValue(); 2558 if (Val == "fast") 2559 Opts.setDefaultFPContractMode(LangOptions::FPC_Fast); 2560 else if (Val == "on") 2561 Opts.setDefaultFPContractMode(LangOptions::FPC_On); 2562 else if (Val == "off") 2563 Opts.setDefaultFPContractMode(LangOptions::FPC_Off); 2564 else 2565 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Val; 2566 } 2567 2568 Opts.RetainCommentsFromSystemHeaders = 2569 Args.hasArg(OPT_fretain_comments_from_system_headers); 2570 2571 unsigned SSP = getLastArgIntValue(Args, OPT_stack_protector, 0, Diags); 2572 switch (SSP) { 2573 default: 2574 Diags.Report(diag::err_drv_invalid_value) 2575 << Args.getLastArg(OPT_stack_protector)->getAsString(Args) << SSP; 2576 break; 2577 case 0: Opts.setStackProtector(LangOptions::SSPOff); break; 2578 case 1: Opts.setStackProtector(LangOptions::SSPOn); break; 2579 case 2: Opts.setStackProtector(LangOptions::SSPStrong); break; 2580 case 3: Opts.setStackProtector(LangOptions::SSPReq); break; 2581 } 2582 2583 // Parse -fsanitize= arguments. 2584 parseSanitizerKinds("-fsanitize=", Args.getAllArgValues(OPT_fsanitize_EQ), 2585 Diags, Opts.Sanitize); 2586 // -fsanitize-address-field-padding=N has to be a LangOpt, parse it here. 2587 Opts.SanitizeAddressFieldPadding = 2588 getLastArgIntValue(Args, OPT_fsanitize_address_field_padding, 0, Diags); 2589 Opts.SanitizerBlacklistFiles = Args.getAllArgValues(OPT_fsanitize_blacklist); 2590 2591 // -fxray-instrument 2592 Opts.XRayInstrument = 2593 Args.hasFlag(OPT_fxray_instrument, OPT_fnoxray_instrument, false); 2594 2595 // -fxray-always-emit-customevents 2596 Opts.XRayAlwaysEmitCustomEvents = 2597 Args.hasFlag(OPT_fxray_always_emit_customevents, 2598 OPT_fnoxray_always_emit_customevents, false); 2599 2600 // -fxray-{always,never}-instrument= filenames. 2601 Opts.XRayAlwaysInstrumentFiles = 2602 Args.getAllArgValues(OPT_fxray_always_instrument); 2603 Opts.XRayNeverInstrumentFiles = 2604 Args.getAllArgValues(OPT_fxray_never_instrument); 2605 2606 // -fallow-editor-placeholders 2607 Opts.AllowEditorPlaceholders = Args.hasArg(OPT_fallow_editor_placeholders); 2608 } 2609 2610 static bool isStrictlyPreprocessorAction(frontend::ActionKind Action) { 2611 switch (Action) { 2612 case frontend::ASTDeclList: 2613 case frontend::ASTDump: 2614 case frontend::ASTPrint: 2615 case frontend::ASTView: 2616 case frontend::EmitAssembly: 2617 case frontend::EmitBC: 2618 case frontend::EmitHTML: 2619 case frontend::EmitLLVM: 2620 case frontend::EmitLLVMOnly: 2621 case frontend::EmitCodeGenOnly: 2622 case frontend::EmitObj: 2623 case frontend::FixIt: 2624 case frontend::GenerateModule: 2625 case frontend::GenerateModuleInterface: 2626 case frontend::GeneratePCH: 2627 case frontend::GeneratePTH: 2628 case frontend::ParseSyntaxOnly: 2629 case frontend::ModuleFileInfo: 2630 case frontend::VerifyPCH: 2631 case frontend::PluginAction: 2632 case frontend::PrintDeclContext: 2633 case frontend::RewriteObjC: 2634 case frontend::RewriteTest: 2635 case frontend::RunAnalysis: 2636 case frontend::TemplightDump: 2637 case frontend::MigrateSource: 2638 return false; 2639 2640 case frontend::DumpRawTokens: 2641 case frontend::DumpTokens: 2642 case frontend::InitOnly: 2643 case frontend::PrintPreamble: 2644 case frontend::PrintPreprocessedInput: 2645 case frontend::RewriteMacros: 2646 case frontend::RunPreprocessorOnly: 2647 return true; 2648 } 2649 llvm_unreachable("invalid frontend action"); 2650 } 2651 2652 static void ParsePreprocessorArgs(PreprocessorOptions &Opts, ArgList &Args, 2653 DiagnosticsEngine &Diags, 2654 frontend::ActionKind Action) { 2655 using namespace options; 2656 Opts.ImplicitPCHInclude = Args.getLastArgValue(OPT_include_pch); 2657 Opts.ImplicitPTHInclude = Args.getLastArgValue(OPT_include_pth); 2658 if (const Arg *A = Args.getLastArg(OPT_token_cache)) 2659 Opts.TokenCache = A->getValue(); 2660 else 2661 Opts.TokenCache = Opts.ImplicitPTHInclude; 2662 Opts.UsePredefines = !Args.hasArg(OPT_undef); 2663 Opts.DetailedRecord = Args.hasArg(OPT_detailed_preprocessing_record); 2664 Opts.DisablePCHValidation = Args.hasArg(OPT_fno_validate_pch); 2665 Opts.AllowPCHWithCompilerErrors = Args.hasArg(OPT_fallow_pch_with_errors); 2666 2667 Opts.DumpDeserializedPCHDecls = Args.hasArg(OPT_dump_deserialized_pch_decls); 2668 for (const Arg *A : Args.filtered(OPT_error_on_deserialized_pch_decl)) 2669 Opts.DeserializedPCHDeclsToErrorOn.insert(A->getValue()); 2670 2671 if (const Arg *A = Args.getLastArg(OPT_preamble_bytes_EQ)) { 2672 StringRef Value(A->getValue()); 2673 size_t Comma = Value.find(','); 2674 unsigned Bytes = 0; 2675 unsigned EndOfLine = 0; 2676 2677 if (Comma == StringRef::npos || 2678 Value.substr(0, Comma).getAsInteger(10, Bytes) || 2679 Value.substr(Comma + 1).getAsInteger(10, EndOfLine)) 2680 Diags.Report(diag::err_drv_preamble_format); 2681 else { 2682 Opts.PrecompiledPreambleBytes.first = Bytes; 2683 Opts.PrecompiledPreambleBytes.second = (EndOfLine != 0); 2684 } 2685 } 2686 2687 // Add macros from the command line. 2688 for (const Arg *A : Args.filtered(OPT_D, OPT_U)) { 2689 if (A->getOption().matches(OPT_D)) 2690 Opts.addMacroDef(A->getValue()); 2691 else 2692 Opts.addMacroUndef(A->getValue()); 2693 } 2694 2695 Opts.MacroIncludes = Args.getAllArgValues(OPT_imacros); 2696 2697 // Add the ordered list of -includes. 2698 for (const Arg *A : Args.filtered(OPT_include)) 2699 Opts.Includes.emplace_back(A->getValue()); 2700 2701 for (const Arg *A : Args.filtered(OPT_chain_include)) 2702 Opts.ChainedIncludes.emplace_back(A->getValue()); 2703 2704 for (const Arg *A : Args.filtered(OPT_remap_file)) { 2705 std::pair<StringRef, StringRef> Split = StringRef(A->getValue()).split(';'); 2706 2707 if (Split.second.empty()) { 2708 Diags.Report(diag::err_drv_invalid_remap_file) << A->getAsString(Args); 2709 continue; 2710 } 2711 2712 Opts.addRemappedFile(Split.first, Split.second); 2713 } 2714 2715 if (Arg *A = Args.getLastArg(OPT_fobjc_arc_cxxlib_EQ)) { 2716 StringRef Name = A->getValue(); 2717 unsigned Library = llvm::StringSwitch<unsigned>(Name) 2718 .Case("libc++", ARCXX_libcxx) 2719 .Case("libstdc++", ARCXX_libstdcxx) 2720 .Case("none", ARCXX_nolib) 2721 .Default(~0U); 2722 if (Library == ~0U) 2723 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Name; 2724 else 2725 Opts.ObjCXXARCStandardLibrary = (ObjCXXARCStandardLibraryKind)Library; 2726 } 2727 2728 // Always avoid lexing editor placeholders when we're just running the 2729 // preprocessor as we never want to emit the 2730 // "editor placeholder in source file" error in PP only mode. 2731 if (isStrictlyPreprocessorAction(Action)) 2732 Opts.LexEditorPlaceholders = false; 2733 } 2734 2735 static void ParsePreprocessorOutputArgs(PreprocessorOutputOptions &Opts, 2736 ArgList &Args, 2737 frontend::ActionKind Action) { 2738 using namespace options; 2739 2740 if (isStrictlyPreprocessorAction(Action)) 2741 Opts.ShowCPP = !Args.hasArg(OPT_dM); 2742 else 2743 Opts.ShowCPP = 0; 2744 2745 Opts.ShowComments = Args.hasArg(OPT_C); 2746 Opts.ShowLineMarkers = !Args.hasArg(OPT_P); 2747 Opts.ShowMacroComments = Args.hasArg(OPT_CC); 2748 Opts.ShowMacros = Args.hasArg(OPT_dM) || Args.hasArg(OPT_dD); 2749 Opts.ShowIncludeDirectives = Args.hasArg(OPT_dI); 2750 Opts.RewriteIncludes = Args.hasArg(OPT_frewrite_includes); 2751 Opts.RewriteImports = Args.hasArg(OPT_frewrite_imports); 2752 Opts.UseLineDirectives = Args.hasArg(OPT_fuse_line_directives); 2753 } 2754 2755 static void ParseTargetArgs(TargetOptions &Opts, ArgList &Args, 2756 DiagnosticsEngine &Diags) { 2757 using namespace options; 2758 Opts.ABI = Args.getLastArgValue(OPT_target_abi); 2759 if (Arg *A = Args.getLastArg(OPT_meabi)) { 2760 StringRef Value = A->getValue(); 2761 llvm::EABI EABIVersion = llvm::StringSwitch<llvm::EABI>(Value) 2762 .Case("default", llvm::EABI::Default) 2763 .Case("4", llvm::EABI::EABI4) 2764 .Case("5", llvm::EABI::EABI5) 2765 .Case("gnu", llvm::EABI::GNU) 2766 .Default(llvm::EABI::Unknown); 2767 if (EABIVersion == llvm::EABI::Unknown) 2768 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) 2769 << Value; 2770 else 2771 Opts.EABIVersion = EABIVersion; 2772 } 2773 Opts.CPU = Args.getLastArgValue(OPT_target_cpu); 2774 Opts.FPMath = Args.getLastArgValue(OPT_mfpmath); 2775 Opts.FeaturesAsWritten = Args.getAllArgValues(OPT_target_feature); 2776 Opts.LinkerVersion = Args.getLastArgValue(OPT_target_linker_version); 2777 Opts.Triple = llvm::Triple::normalize(Args.getLastArgValue(OPT_triple)); 2778 // Use the default target triple if unspecified. 2779 if (Opts.Triple.empty()) 2780 Opts.Triple = llvm::sys::getDefaultTargetTriple(); 2781 Opts.OpenCLExtensionsAsWritten = Args.getAllArgValues(OPT_cl_ext_EQ); 2782 } 2783 2784 bool CompilerInvocation::CreateFromArgs(CompilerInvocation &Res, 2785 const char *const *ArgBegin, 2786 const char *const *ArgEnd, 2787 DiagnosticsEngine &Diags) { 2788 bool Success = true; 2789 2790 // Parse the arguments. 2791 std::unique_ptr<OptTable> Opts = createDriverOptTable(); 2792 const unsigned IncludedFlagsBitmask = options::CC1Option; 2793 unsigned MissingArgIndex, MissingArgCount; 2794 InputArgList Args = 2795 Opts->ParseArgs(llvm::makeArrayRef(ArgBegin, ArgEnd), MissingArgIndex, 2796 MissingArgCount, IncludedFlagsBitmask); 2797 LangOptions &LangOpts = *Res.getLangOpts(); 2798 2799 // Check for missing argument error. 2800 if (MissingArgCount) { 2801 Diags.Report(diag::err_drv_missing_argument) 2802 << Args.getArgString(MissingArgIndex) << MissingArgCount; 2803 Success = false; 2804 } 2805 2806 // Issue errors on unknown arguments. 2807 for (const Arg *A : Args.filtered(OPT_UNKNOWN)) { 2808 auto ArgString = A->getAsString(Args); 2809 std::string Nearest; 2810 if (Opts->findNearest(ArgString, Nearest, IncludedFlagsBitmask) > 1) 2811 Diags.Report(diag::err_drv_unknown_argument) << ArgString; 2812 else 2813 Diags.Report(diag::err_drv_unknown_argument_with_suggestion) 2814 << ArgString << Nearest; 2815 Success = false; 2816 } 2817 2818 Success &= ParseAnalyzerArgs(*Res.getAnalyzerOpts(), Args, Diags); 2819 Success &= ParseMigratorArgs(Res.getMigratorOpts(), Args); 2820 ParseDependencyOutputArgs(Res.getDependencyOutputOpts(), Args); 2821 Success &= 2822 ParseDiagnosticArgs(Res.getDiagnosticOpts(), Args, &Diags, 2823 false /*DefaultDiagColor*/, false /*DefaultShowOpt*/); 2824 ParseCommentArgs(LangOpts.CommentOpts, Args); 2825 ParseFileSystemArgs(Res.getFileSystemOpts(), Args); 2826 // FIXME: We shouldn't have to pass the DashX option around here 2827 InputKind DashX = ParseFrontendArgs(Res.getFrontendOpts(), Args, Diags, 2828 LangOpts.IsHeaderFile); 2829 ParseTargetArgs(Res.getTargetOpts(), Args, Diags); 2830 Success &= ParseCodeGenArgs(Res.getCodeGenOpts(), Args, DashX, Diags, 2831 Res.getTargetOpts()); 2832 ParseHeaderSearchArgs(Res.getHeaderSearchOpts(), Args, 2833 Res.getFileSystemOpts().WorkingDir); 2834 if (DashX.getFormat() == InputKind::Precompiled || 2835 DashX.getLanguage() == InputKind::LLVM_IR) { 2836 // ObjCAAutoRefCount and Sanitize LangOpts are used to setup the 2837 // PassManager in BackendUtil.cpp. They need to be initializd no matter 2838 // what the input type is. 2839 if (Args.hasArg(OPT_fobjc_arc)) 2840 LangOpts.ObjCAutoRefCount = 1; 2841 // PIClevel and PIELevel are needed during code generation and this should be 2842 // set regardless of the input type. 2843 LangOpts.PICLevel = getLastArgIntValue(Args, OPT_pic_level, 0, Diags); 2844 LangOpts.PIE = Args.hasArg(OPT_pic_is_pie); 2845 parseSanitizerKinds("-fsanitize=", Args.getAllArgValues(OPT_fsanitize_EQ), 2846 Diags, LangOpts.Sanitize); 2847 } else { 2848 // Other LangOpts are only initialzed when the input is not AST or LLVM IR. 2849 // FIXME: Should we really be calling this for an InputKind::Asm input? 2850 ParseLangArgs(LangOpts, Args, DashX, Res.getTargetOpts(), 2851 Res.getPreprocessorOpts(), Diags); 2852 if (Res.getFrontendOpts().ProgramAction == frontend::RewriteObjC) 2853 LangOpts.ObjCExceptions = 1; 2854 } 2855 2856 if (LangOpts.CUDA) { 2857 // During CUDA device-side compilation, the aux triple is the 2858 // triple used for host compilation. 2859 if (LangOpts.CUDAIsDevice) 2860 Res.getTargetOpts().HostTriple = Res.getFrontendOpts().AuxTriple; 2861 } 2862 2863 // Set the triple of the host for OpenMP device compile. 2864 if (LangOpts.OpenMPIsDevice) 2865 Res.getTargetOpts().HostTriple = Res.getFrontendOpts().AuxTriple; 2866 2867 // FIXME: Override value name discarding when asan or msan is used because the 2868 // backend passes depend on the name of the alloca in order to print out 2869 // names. 2870 Res.getCodeGenOpts().DiscardValueNames &= 2871 !LangOpts.Sanitize.has(SanitizerKind::Address) && 2872 !LangOpts.Sanitize.has(SanitizerKind::Memory); 2873 2874 ParsePreprocessorArgs(Res.getPreprocessorOpts(), Args, Diags, 2875 Res.getFrontendOpts().ProgramAction); 2876 ParsePreprocessorOutputArgs(Res.getPreprocessorOutputOpts(), Args, 2877 Res.getFrontendOpts().ProgramAction); 2878 2879 // Turn on -Wspir-compat for SPIR target. 2880 llvm::Triple T(Res.getTargetOpts().Triple); 2881 auto Arch = T.getArch(); 2882 if (Arch == llvm::Triple::spir || Arch == llvm::Triple::spir64) { 2883 Res.getDiagnosticOpts().Warnings.push_back("spir-compat"); 2884 } 2885 2886 // If sanitizer is enabled, disable OPT_ffine_grained_bitfield_accesses. 2887 if (Res.getCodeGenOpts().FineGrainedBitfieldAccesses && 2888 !Res.getLangOpts()->Sanitize.empty()) { 2889 Res.getCodeGenOpts().FineGrainedBitfieldAccesses = false; 2890 Diags.Report(diag::warn_drv_fine_grained_bitfield_accesses_ignored); 2891 } 2892 return Success; 2893 } 2894 2895 std::string CompilerInvocation::getModuleHash() const { 2896 // Note: For QoI reasons, the things we use as a hash here should all be 2897 // dumped via the -module-info flag. 2898 using llvm::hash_code; 2899 using llvm::hash_value; 2900 using llvm::hash_combine; 2901 2902 // Start the signature with the compiler version. 2903 // FIXME: We'd rather use something more cryptographically sound than 2904 // CityHash, but this will do for now. 2905 hash_code code = hash_value(getClangFullRepositoryVersion()); 2906 2907 // Extend the signature with the language options 2908 #define LANGOPT(Name, Bits, Default, Description) \ 2909 code = hash_combine(code, LangOpts->Name); 2910 #define ENUM_LANGOPT(Name, Type, Bits, Default, Description) \ 2911 code = hash_combine(code, static_cast<unsigned>(LangOpts->get##Name())); 2912 #define BENIGN_LANGOPT(Name, Bits, Default, Description) 2913 #define BENIGN_ENUM_LANGOPT(Name, Type, Bits, Default, Description) 2914 #include "clang/Basic/LangOptions.def" 2915 2916 for (StringRef Feature : LangOpts->ModuleFeatures) 2917 code = hash_combine(code, Feature); 2918 2919 // Extend the signature with the target options. 2920 code = hash_combine(code, TargetOpts->Triple, TargetOpts->CPU, 2921 TargetOpts->ABI); 2922 for (unsigned i = 0, n = TargetOpts->FeaturesAsWritten.size(); i != n; ++i) 2923 code = hash_combine(code, TargetOpts->FeaturesAsWritten[i]); 2924 2925 // Extend the signature with preprocessor options. 2926 const PreprocessorOptions &ppOpts = getPreprocessorOpts(); 2927 const HeaderSearchOptions &hsOpts = getHeaderSearchOpts(); 2928 code = hash_combine(code, ppOpts.UsePredefines, ppOpts.DetailedRecord); 2929 2930 for (std::vector<std::pair<std::string, bool/*isUndef*/>>::const_iterator 2931 I = getPreprocessorOpts().Macros.begin(), 2932 IEnd = getPreprocessorOpts().Macros.end(); 2933 I != IEnd; ++I) { 2934 // If we're supposed to ignore this macro for the purposes of modules, 2935 // don't put it into the hash. 2936 if (!hsOpts.ModulesIgnoreMacros.empty()) { 2937 // Check whether we're ignoring this macro. 2938 StringRef MacroDef = I->first; 2939 if (hsOpts.ModulesIgnoreMacros.count( 2940 llvm::CachedHashString(MacroDef.split('=').first))) 2941 continue; 2942 } 2943 2944 code = hash_combine(code, I->first, I->second); 2945 } 2946 2947 // Extend the signature with the sysroot and other header search options. 2948 code = hash_combine(code, hsOpts.Sysroot, 2949 hsOpts.ModuleFormat, 2950 hsOpts.UseDebugInfo, 2951 hsOpts.UseBuiltinIncludes, 2952 hsOpts.UseStandardSystemIncludes, 2953 hsOpts.UseStandardCXXIncludes, 2954 hsOpts.UseLibcxx, 2955 hsOpts.ModulesValidateDiagnosticOptions); 2956 code = hash_combine(code, hsOpts.ResourceDir); 2957 2958 // Extend the signature with the user build path. 2959 code = hash_combine(code, hsOpts.ModuleUserBuildPath); 2960 2961 // Extend the signature with the module file extensions. 2962 const FrontendOptions &frontendOpts = getFrontendOpts(); 2963 for (const auto &ext : frontendOpts.ModuleFileExtensions) { 2964 code = ext->hashExtension(code); 2965 } 2966 2967 // Extend the signature with the enabled sanitizers, if at least one is 2968 // enabled. Sanitizers which cannot affect AST generation aren't hashed. 2969 SanitizerSet SanHash = LangOpts->Sanitize; 2970 SanHash.clear(getPPTransparentSanitizers()); 2971 if (!SanHash.empty()) 2972 code = hash_combine(code, SanHash.Mask); 2973 2974 return llvm::APInt(64, code).toString(36, /*Signed=*/false); 2975 } 2976 2977 namespace clang { 2978 2979 template<typename IntTy> 2980 static IntTy getLastArgIntValueImpl(const ArgList &Args, OptSpecifier Id, 2981 IntTy Default, 2982 DiagnosticsEngine *Diags) { 2983 IntTy Res = Default; 2984 if (Arg *A = Args.getLastArg(Id)) { 2985 if (StringRef(A->getValue()).getAsInteger(10, Res)) { 2986 if (Diags) 2987 Diags->Report(diag::err_drv_invalid_int_value) << A->getAsString(Args) 2988 << A->getValue(); 2989 } 2990 } 2991 return Res; 2992 } 2993 2994 2995 // Declared in clang/Frontend/Utils.h. 2996 int getLastArgIntValue(const ArgList &Args, OptSpecifier Id, int Default, 2997 DiagnosticsEngine *Diags) { 2998 return getLastArgIntValueImpl<int>(Args, Id, Default, Diags); 2999 } 3000 3001 uint64_t getLastArgUInt64Value(const ArgList &Args, OptSpecifier Id, 3002 uint64_t Default, 3003 DiagnosticsEngine *Diags) { 3004 return getLastArgIntValueImpl<uint64_t>(Args, Id, Default, Diags); 3005 } 3006 3007 void BuryPointer(const void *Ptr) { 3008 // This function may be called only a small fixed amount of times per each 3009 // invocation, otherwise we do actually have a leak which we want to report. 3010 // If this function is called more than kGraveYardMaxSize times, the pointers 3011 // will not be properly buried and a leak detector will report a leak, which 3012 // is what we want in such case. 3013 static const size_t kGraveYardMaxSize = 16; 3014 LLVM_ATTRIBUTE_UNUSED static const void *GraveYard[kGraveYardMaxSize]; 3015 static std::atomic<unsigned> GraveYardSize; 3016 unsigned Idx = GraveYardSize++; 3017 if (Idx >= kGraveYardMaxSize) 3018 return; 3019 GraveYard[Idx] = Ptr; 3020 } 3021 3022 IntrusiveRefCntPtr<vfs::FileSystem> 3023 createVFSFromCompilerInvocation(const CompilerInvocation &CI, 3024 DiagnosticsEngine &Diags) { 3025 return createVFSFromCompilerInvocation(CI, Diags, vfs::getRealFileSystem()); 3026 } 3027 3028 IntrusiveRefCntPtr<vfs::FileSystem> 3029 createVFSFromCompilerInvocation(const CompilerInvocation &CI, 3030 DiagnosticsEngine &Diags, 3031 IntrusiveRefCntPtr<vfs::FileSystem> BaseFS) { 3032 if (CI.getHeaderSearchOpts().VFSOverlayFiles.empty()) 3033 return BaseFS; 3034 3035 IntrusiveRefCntPtr<vfs::OverlayFileSystem> Overlay( 3036 new vfs::OverlayFileSystem(BaseFS)); 3037 // earlier vfs files are on the bottom 3038 for (const std::string &File : CI.getHeaderSearchOpts().VFSOverlayFiles) { 3039 llvm::ErrorOr<std::unique_ptr<llvm::MemoryBuffer>> Buffer = 3040 BaseFS->getBufferForFile(File); 3041 if (!Buffer) { 3042 Diags.Report(diag::err_missing_vfs_overlay_file) << File; 3043 return IntrusiveRefCntPtr<vfs::FileSystem>(); 3044 } 3045 3046 IntrusiveRefCntPtr<vfs::FileSystem> FS = vfs::getVFSFromYAML( 3047 std::move(Buffer.get()), /*DiagHandler*/ nullptr, File); 3048 if (!FS.get()) { 3049 Diags.Report(diag::err_invalid_vfs_overlay) << File; 3050 return IntrusiveRefCntPtr<vfs::FileSystem>(); 3051 } 3052 Overlay->pushOverlay(FS); 3053 } 3054 return Overlay; 3055 } 3056 } // end namespace clang 3057