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 == IK_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 return Success; 309 } 310 311 static bool ParseMigratorArgs(MigratorOptions &Opts, ArgList &Args) { 312 Opts.NoNSAllocReallocError = Args.hasArg(OPT_migrator_no_nsalloc_error); 313 Opts.NoFinalizeRemoval = Args.hasArg(OPT_migrator_no_finalize_removal); 314 return true; 315 } 316 317 static void ParseCommentArgs(CommentOptions &Opts, ArgList &Args) { 318 Opts.BlockCommandNames = Args.getAllArgValues(OPT_fcomment_block_commands); 319 Opts.ParseAllComments = Args.hasArg(OPT_fparse_all_comments); 320 } 321 322 static StringRef getCodeModel(ArgList &Args, DiagnosticsEngine &Diags) { 323 if (Arg *A = Args.getLastArg(OPT_mcode_model)) { 324 StringRef Value = A->getValue(); 325 if (Value == "small" || Value == "kernel" || Value == "medium" || 326 Value == "large") 327 return Value; 328 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Value; 329 } 330 return "default"; 331 } 332 333 /// \brief Create a new Regex instance out of the string value in \p RpassArg. 334 /// It returns a pointer to the newly generated Regex instance. 335 static std::shared_ptr<llvm::Regex> 336 GenerateOptimizationRemarkRegex(DiagnosticsEngine &Diags, ArgList &Args, 337 Arg *RpassArg) { 338 StringRef Val = RpassArg->getValue(); 339 std::string RegexError; 340 std::shared_ptr<llvm::Regex> Pattern = std::make_shared<llvm::Regex>(Val); 341 if (!Pattern->isValid(RegexError)) { 342 Diags.Report(diag::err_drv_optimization_remark_pattern) 343 << RegexError << RpassArg->getAsString(Args); 344 Pattern.reset(); 345 } 346 return Pattern; 347 } 348 349 static bool parseDiagnosticLevelMask(StringRef FlagName, 350 const std::vector<std::string> &Levels, 351 DiagnosticsEngine *Diags, 352 DiagnosticLevelMask &M) { 353 bool Success = true; 354 for (const auto &Level : Levels) { 355 DiagnosticLevelMask const PM = 356 llvm::StringSwitch<DiagnosticLevelMask>(Level) 357 .Case("note", DiagnosticLevelMask::Note) 358 .Case("remark", DiagnosticLevelMask::Remark) 359 .Case("warning", DiagnosticLevelMask::Warning) 360 .Case("error", DiagnosticLevelMask::Error) 361 .Default(DiagnosticLevelMask::None); 362 if (PM == DiagnosticLevelMask::None) { 363 Success = false; 364 if (Diags) 365 Diags->Report(diag::err_drv_invalid_value) << FlagName << Level; 366 } 367 M = M | PM; 368 } 369 return Success; 370 } 371 372 static void parseSanitizerKinds(StringRef FlagName, 373 const std::vector<std::string> &Sanitizers, 374 DiagnosticsEngine &Diags, SanitizerSet &S) { 375 for (const auto &Sanitizer : Sanitizers) { 376 SanitizerMask K = parseSanitizerValue(Sanitizer, /*AllowGroups=*/false); 377 if (K == 0) 378 Diags.Report(diag::err_drv_invalid_value) << FlagName << Sanitizer; 379 else 380 S.set(K, true); 381 } 382 } 383 384 // Set the profile kind for fprofile-instrument. 385 static void setPGOInstrumentor(CodeGenOptions &Opts, ArgList &Args, 386 DiagnosticsEngine &Diags) { 387 Arg *A = Args.getLastArg(OPT_fprofile_instrument_EQ); 388 if (A == nullptr) 389 return; 390 StringRef S = A->getValue(); 391 unsigned I = llvm::StringSwitch<unsigned>(S) 392 .Case("none", CodeGenOptions::ProfileNone) 393 .Case("clang", CodeGenOptions::ProfileClangInstr) 394 .Case("llvm", CodeGenOptions::ProfileIRInstr) 395 .Default(~0U); 396 if (I == ~0U) { 397 Diags.Report(diag::err_drv_invalid_pgo_instrumentor) << A->getAsString(Args) 398 << S; 399 return; 400 } 401 CodeGenOptions::ProfileInstrKind Instrumentor = 402 static_cast<CodeGenOptions::ProfileInstrKind>(I); 403 Opts.setProfileInstr(Instrumentor); 404 } 405 406 // Set the profile kind using fprofile-instrument-use-path. 407 static void setPGOUseInstrumentor(CodeGenOptions &Opts, 408 const Twine &ProfileName) { 409 auto ReaderOrErr = llvm::IndexedInstrProfReader::create(ProfileName); 410 // In error, return silently and let Clang PGOUse report the error message. 411 if (auto E = ReaderOrErr.takeError()) { 412 llvm::consumeError(std::move(E)); 413 Opts.setProfileUse(CodeGenOptions::ProfileClangInstr); 414 return; 415 } 416 std::unique_ptr<llvm::IndexedInstrProfReader> PGOReader = 417 std::move(ReaderOrErr.get()); 418 if (PGOReader->isIRLevelProfile()) 419 Opts.setProfileUse(CodeGenOptions::ProfileIRInstr); 420 else 421 Opts.setProfileUse(CodeGenOptions::ProfileClangInstr); 422 } 423 424 static bool ParseCodeGenArgs(CodeGenOptions &Opts, ArgList &Args, InputKind IK, 425 DiagnosticsEngine &Diags, 426 const TargetOptions &TargetOpts) { 427 using namespace options; 428 bool Success = true; 429 llvm::Triple Triple = llvm::Triple(TargetOpts.Triple); 430 431 unsigned OptimizationLevel = getOptimizationLevel(Args, IK, Diags); 432 // TODO: This could be done in Driver 433 unsigned MaxOptLevel = 3; 434 if (OptimizationLevel > MaxOptLevel) { 435 // If the optimization level is not supported, fall back on the default 436 // optimization 437 Diags.Report(diag::warn_drv_optimization_value) 438 << Args.getLastArg(OPT_O)->getAsString(Args) << "-O" << MaxOptLevel; 439 OptimizationLevel = MaxOptLevel; 440 } 441 Opts.OptimizationLevel = OptimizationLevel; 442 443 // At O0 we want to fully disable inlining outside of cases marked with 444 // 'alwaysinline' that are required for correctness. 445 Opts.setInlining((Opts.OptimizationLevel == 0) 446 ? CodeGenOptions::OnlyAlwaysInlining 447 : CodeGenOptions::NormalInlining); 448 // Explicit inlining flags can disable some or all inlining even at 449 // optimization levels above zero. 450 if (Arg *InlineArg = Args.getLastArg( 451 options::OPT_finline_functions, options::OPT_finline_hint_functions, 452 options::OPT_fno_inline_functions, options::OPT_fno_inline)) { 453 if (Opts.OptimizationLevel > 0) { 454 const Option &InlineOpt = InlineArg->getOption(); 455 if (InlineOpt.matches(options::OPT_finline_functions)) 456 Opts.setInlining(CodeGenOptions::NormalInlining); 457 else if (InlineOpt.matches(options::OPT_finline_hint_functions)) 458 Opts.setInlining(CodeGenOptions::OnlyHintInlining); 459 else 460 Opts.setInlining(CodeGenOptions::OnlyAlwaysInlining); 461 } 462 } 463 464 Opts.ExperimentalNewPassManager = Args.hasFlag( 465 OPT_fexperimental_new_pass_manager, OPT_fno_experimental_new_pass_manager, 466 /* Default */ false); 467 468 if (Arg *A = Args.getLastArg(OPT_fveclib)) { 469 StringRef Name = A->getValue(); 470 if (Name == "Accelerate") 471 Opts.setVecLib(CodeGenOptions::Accelerate); 472 else if (Name == "SVML") 473 Opts.setVecLib(CodeGenOptions::SVML); 474 else if (Name == "none") 475 Opts.setVecLib(CodeGenOptions::NoLibrary); 476 else 477 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Name; 478 } 479 480 if (Arg *A = Args.getLastArg(OPT_debug_info_kind_EQ)) { 481 unsigned Val = 482 llvm::StringSwitch<unsigned>(A->getValue()) 483 .Case("line-tables-only", codegenoptions::DebugLineTablesOnly) 484 .Case("limited", codegenoptions::LimitedDebugInfo) 485 .Case("standalone", codegenoptions::FullDebugInfo) 486 .Default(~0U); 487 if (Val == ~0U) 488 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) 489 << A->getValue(); 490 else 491 Opts.setDebugInfo(static_cast<codegenoptions::DebugInfoKind>(Val)); 492 } 493 if (Arg *A = Args.getLastArg(OPT_debugger_tuning_EQ)) { 494 unsigned Val = llvm::StringSwitch<unsigned>(A->getValue()) 495 .Case("gdb", unsigned(llvm::DebuggerKind::GDB)) 496 .Case("lldb", unsigned(llvm::DebuggerKind::LLDB)) 497 .Case("sce", unsigned(llvm::DebuggerKind::SCE)) 498 .Default(~0U); 499 if (Val == ~0U) 500 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) 501 << A->getValue(); 502 else 503 Opts.setDebuggerTuning(static_cast<llvm::DebuggerKind>(Val)); 504 } 505 Opts.DwarfVersion = getLastArgIntValue(Args, OPT_dwarf_version_EQ, 0, Diags); 506 Opts.DebugColumnInfo = Args.hasArg(OPT_dwarf_column_info); 507 Opts.EmitCodeView = Args.hasArg(OPT_gcodeview); 508 Opts.MacroDebugInfo = Args.hasArg(OPT_debug_info_macro); 509 Opts.WholeProgramVTables = Args.hasArg(OPT_fwhole_program_vtables); 510 Opts.LTOVisibilityPublicStd = Args.hasArg(OPT_flto_visibility_public_std); 511 Opts.SplitDwarfFile = Args.getLastArgValue(OPT_split_dwarf_file); 512 Opts.SplitDwarfInlining = !Args.hasArg(OPT_fno_split_dwarf_inlining); 513 Opts.DebugTypeExtRefs = Args.hasArg(OPT_dwarf_ext_refs); 514 Opts.DebugExplicitImport = Triple.isPS4CPU(); 515 516 for (const auto &Arg : Args.getAllArgValues(OPT_fdebug_prefix_map_EQ)) 517 Opts.DebugPrefixMap.insert(StringRef(Arg).split('=')); 518 519 if (const Arg *A = 520 Args.getLastArg(OPT_emit_llvm_uselists, OPT_no_emit_llvm_uselists)) 521 Opts.EmitLLVMUseLists = A->getOption().getID() == OPT_emit_llvm_uselists; 522 523 Opts.DisableLLVMPasses = Args.hasArg(OPT_disable_llvm_passes); 524 Opts.DisableLifetimeMarkers = Args.hasArg(OPT_disable_lifetimemarkers); 525 Opts.DisableRedZone = Args.hasArg(OPT_disable_red_zone); 526 Opts.ForbidGuardVariables = Args.hasArg(OPT_fforbid_guard_variables); 527 Opts.UseRegisterSizedBitfieldAccess = Args.hasArg( 528 OPT_fuse_register_sized_bitfield_access); 529 Opts.RelaxedAliasing = Args.hasArg(OPT_relaxed_aliasing); 530 Opts.StructPathTBAA = !Args.hasArg(OPT_no_struct_path_tbaa); 531 Opts.DwarfDebugFlags = Args.getLastArgValue(OPT_dwarf_debug_flags); 532 Opts.MergeAllConstants = !Args.hasArg(OPT_fno_merge_all_constants); 533 Opts.NoCommon = Args.hasArg(OPT_fno_common); 534 Opts.NoImplicitFloat = Args.hasArg(OPT_no_implicit_float); 535 Opts.OptimizeSize = getOptimizationLevelSize(Args); 536 Opts.SimplifyLibCalls = !(Args.hasArg(OPT_fno_builtin) || 537 Args.hasArg(OPT_ffreestanding)); 538 if (Opts.SimplifyLibCalls) 539 getAllNoBuiltinFuncValues(Args, Opts.NoBuiltinFuncs); 540 Opts.UnrollLoops = 541 Args.hasFlag(OPT_funroll_loops, OPT_fno_unroll_loops, 542 (Opts.OptimizationLevel > 1)); 543 Opts.RerollLoops = Args.hasArg(OPT_freroll_loops); 544 545 Opts.DisableIntegratedAS = Args.hasArg(OPT_fno_integrated_as); 546 Opts.Autolink = !Args.hasArg(OPT_fno_autolink); 547 Opts.SampleProfileFile = Args.getLastArgValue(OPT_fprofile_sample_use_EQ); 548 Opts.DebugInfoForProfiling = Args.hasFlag( 549 OPT_fdebug_info_for_profiling, OPT_fno_debug_info_for_profiling, false); 550 551 setPGOInstrumentor(Opts, Args, Diags); 552 Opts.InstrProfileOutput = 553 Args.getLastArgValue(OPT_fprofile_instrument_path_EQ); 554 Opts.ProfileInstrumentUsePath = 555 Args.getLastArgValue(OPT_fprofile_instrument_use_path_EQ); 556 if (!Opts.ProfileInstrumentUsePath.empty()) 557 setPGOUseInstrumentor(Opts, Opts.ProfileInstrumentUsePath); 558 559 Opts.CoverageMapping = 560 Args.hasFlag(OPT_fcoverage_mapping, OPT_fno_coverage_mapping, false); 561 Opts.DumpCoverageMapping = Args.hasArg(OPT_dump_coverage_mapping); 562 Opts.AsmVerbose = Args.hasArg(OPT_masm_verbose); 563 Opts.PreserveAsmComments = !Args.hasArg(OPT_fno_preserve_as_comments); 564 Opts.AssumeSaneOperatorNew = !Args.hasArg(OPT_fno_assume_sane_operator_new); 565 Opts.ObjCAutoRefCountExceptions = Args.hasArg(OPT_fobjc_arc_exceptions); 566 Opts.CXAAtExit = !Args.hasArg(OPT_fno_use_cxa_atexit); 567 Opts.CXXCtorDtorAliases = Args.hasArg(OPT_mconstructor_aliases); 568 Opts.CodeModel = getCodeModel(Args, Diags); 569 Opts.DebugPass = Args.getLastArgValue(OPT_mdebug_pass); 570 Opts.DisableFPElim = 571 (Args.hasArg(OPT_mdisable_fp_elim) || Args.hasArg(OPT_pg)); 572 Opts.DisableFree = Args.hasArg(OPT_disable_free); 573 Opts.DiscardValueNames = Args.hasArg(OPT_discard_value_names); 574 Opts.DisableTailCalls = Args.hasArg(OPT_mdisable_tail_calls); 575 Opts.FloatABI = Args.getLastArgValue(OPT_mfloat_abi); 576 Opts.LessPreciseFPMAD = Args.hasArg(OPT_cl_mad_enable); 577 Opts.LimitFloatPrecision = Args.getLastArgValue(OPT_mlimit_float_precision); 578 Opts.NoInfsFPMath = (Args.hasArg(OPT_menable_no_infinities) || 579 Args.hasArg(OPT_cl_finite_math_only) || 580 Args.hasArg(OPT_cl_fast_relaxed_math)); 581 Opts.NoNaNsFPMath = (Args.hasArg(OPT_menable_no_nans) || 582 Args.hasArg(OPT_cl_unsafe_math_optimizations) || 583 Args.hasArg(OPT_cl_finite_math_only) || 584 Args.hasArg(OPT_cl_fast_relaxed_math)); 585 Opts.NoSignedZeros = (Args.hasArg(OPT_fno_signed_zeros) || 586 Args.hasArg(OPT_cl_no_signed_zeros)); 587 Opts.FlushDenorm = Args.hasArg(OPT_cl_denorms_are_zero); 588 Opts.CorrectlyRoundedDivSqrt = 589 Args.hasArg(OPT_cl_fp32_correctly_rounded_divide_sqrt); 590 Opts.ReciprocalMath = Args.hasArg(OPT_freciprocal_math); 591 Opts.NoTrappingMath = Args.hasArg(OPT_fno_trapping_math); 592 Opts.NoZeroInitializedInBSS = Args.hasArg(OPT_mno_zero_initialized_in_bss); 593 Opts.BackendOptions = Args.getAllArgValues(OPT_backend_option); 594 Opts.NumRegisterParameters = getLastArgIntValue(Args, OPT_mregparm, 0, Diags); 595 Opts.NoExecStack = Args.hasArg(OPT_mno_exec_stack); 596 Opts.FatalWarnings = Args.hasArg(OPT_massembler_fatal_warnings); 597 Opts.EnableSegmentedStacks = Args.hasArg(OPT_split_stacks); 598 Opts.RelaxAll = Args.hasArg(OPT_mrelax_all); 599 Opts.IncrementalLinkerCompatible = 600 Args.hasArg(OPT_mincremental_linker_compatible); 601 Opts.PIECopyRelocations = 602 Args.hasArg(OPT_mpie_copy_relocations); 603 Opts.OmitLeafFramePointer = Args.hasArg(OPT_momit_leaf_frame_pointer); 604 Opts.SaveTempLabels = Args.hasArg(OPT_msave_temp_labels); 605 Opts.NoDwarfDirectoryAsm = Args.hasArg(OPT_fno_dwarf_directory_asm); 606 Opts.SoftFloat = Args.hasArg(OPT_msoft_float); 607 Opts.StrictEnums = Args.hasArg(OPT_fstrict_enums); 608 Opts.StrictReturn = !Args.hasArg(OPT_fno_strict_return); 609 Opts.StrictVTablePointers = Args.hasArg(OPT_fstrict_vtable_pointers); 610 Opts.UnsafeFPMath = Args.hasArg(OPT_menable_unsafe_fp_math) || 611 Args.hasArg(OPT_cl_unsafe_math_optimizations) || 612 Args.hasArg(OPT_cl_fast_relaxed_math); 613 Opts.UnwindTables = Args.hasArg(OPT_munwind_tables); 614 Opts.RelocationModel = Args.getLastArgValue(OPT_mrelocation_model, "pic"); 615 Opts.ThreadModel = Args.getLastArgValue(OPT_mthread_model, "posix"); 616 if (Opts.ThreadModel != "posix" && Opts.ThreadModel != "single") 617 Diags.Report(diag::err_drv_invalid_value) 618 << Args.getLastArg(OPT_mthread_model)->getAsString(Args) 619 << Opts.ThreadModel; 620 Opts.TrapFuncName = Args.getLastArgValue(OPT_ftrap_function_EQ); 621 Opts.UseInitArray = Args.hasArg(OPT_fuse_init_array); 622 623 Opts.FunctionSections = Args.hasFlag(OPT_ffunction_sections, 624 OPT_fno_function_sections, false); 625 Opts.DataSections = Args.hasFlag(OPT_fdata_sections, 626 OPT_fno_data_sections, false); 627 Opts.UniqueSectionNames = Args.hasFlag(OPT_funique_section_names, 628 OPT_fno_unique_section_names, true); 629 630 Opts.MergeFunctions = Args.hasArg(OPT_fmerge_functions); 631 632 Opts.NoUseJumpTables = Args.hasArg(OPT_fno_jump_tables); 633 634 Opts.PrepareForLTO = Args.hasArg(OPT_flto, OPT_flto_EQ); 635 const Arg *A = Args.getLastArg(OPT_flto, OPT_flto_EQ); 636 Opts.EmitSummaryIndex = A && A->containsValue("thin"); 637 Opts.LTOUnit = Args.hasFlag(OPT_flto_unit, OPT_fno_lto_unit, false); 638 if (Arg *A = Args.getLastArg(OPT_fthinlto_index_EQ)) { 639 if (IK != IK_LLVM_IR) 640 Diags.Report(diag::err_drv_argument_only_allowed_with) 641 << A->getAsString(Args) << "-x ir"; 642 Opts.ThinLTOIndexFile = Args.getLastArgValue(OPT_fthinlto_index_EQ); 643 } 644 645 Opts.MSVolatile = Args.hasArg(OPT_fms_volatile); 646 647 Opts.VectorizeBB = Args.hasArg(OPT_vectorize_slp_aggressive); 648 Opts.VectorizeLoop = Args.hasArg(OPT_vectorize_loops); 649 Opts.VectorizeSLP = Args.hasArg(OPT_vectorize_slp); 650 651 Opts.MainFileName = Args.getLastArgValue(OPT_main_file_name); 652 Opts.VerifyModule = !Args.hasArg(OPT_disable_llvm_verifier); 653 654 Opts.DisableGCov = Args.hasArg(OPT_test_coverage); 655 Opts.EmitGcovArcs = Args.hasArg(OPT_femit_coverage_data); 656 Opts.EmitGcovNotes = Args.hasArg(OPT_femit_coverage_notes); 657 if (Opts.EmitGcovArcs || Opts.EmitGcovNotes) { 658 Opts.CoverageDataFile = Args.getLastArgValue(OPT_coverage_data_file); 659 Opts.CoverageNotesFile = Args.getLastArgValue(OPT_coverage_notes_file); 660 Opts.CoverageExtraChecksum = Args.hasArg(OPT_coverage_cfg_checksum); 661 Opts.CoverageNoFunctionNamesInData = 662 Args.hasArg(OPT_coverage_no_function_names_in_data); 663 Opts.CoverageExitBlockBeforeBody = 664 Args.hasArg(OPT_coverage_exit_block_before_body); 665 if (Args.hasArg(OPT_coverage_version_EQ)) { 666 StringRef CoverageVersion = Args.getLastArgValue(OPT_coverage_version_EQ); 667 if (CoverageVersion.size() != 4) { 668 Diags.Report(diag::err_drv_invalid_value) 669 << Args.getLastArg(OPT_coverage_version_EQ)->getAsString(Args) 670 << CoverageVersion; 671 } else { 672 memcpy(Opts.CoverageVersion, CoverageVersion.data(), 4); 673 } 674 } 675 } 676 // Handle -fembed-bitcode option. 677 if (Arg *A = Args.getLastArg(OPT_fembed_bitcode_EQ)) { 678 StringRef Name = A->getValue(); 679 unsigned Model = llvm::StringSwitch<unsigned>(Name) 680 .Case("off", CodeGenOptions::Embed_Off) 681 .Case("all", CodeGenOptions::Embed_All) 682 .Case("bitcode", CodeGenOptions::Embed_Bitcode) 683 .Case("marker", CodeGenOptions::Embed_Marker) 684 .Default(~0U); 685 if (Model == ~0U) { 686 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Name; 687 Success = false; 688 } else 689 Opts.setEmbedBitcode( 690 static_cast<CodeGenOptions::EmbedBitcodeKind>(Model)); 691 } 692 // FIXME: For backend options that are not yet recorded as function 693 // attributes in the IR, keep track of them so we can embed them in a 694 // separate data section and use them when building the bitcode. 695 if (Opts.getEmbedBitcode() == CodeGenOptions::Embed_All) { 696 for (const auto &A : Args) { 697 // Do not encode output and input. 698 if (A->getOption().getID() == options::OPT_o || 699 A->getOption().getID() == options::OPT_INPUT || 700 A->getOption().getID() == options::OPT_x || 701 A->getOption().getID() == options::OPT_fembed_bitcode || 702 (A->getOption().getGroup().isValid() && 703 A->getOption().getGroup().getID() == options::OPT_W_Group)) 704 continue; 705 ArgStringList ASL; 706 A->render(Args, ASL); 707 for (const auto &arg : ASL) { 708 StringRef ArgStr(arg); 709 Opts.CmdArgs.insert(Opts.CmdArgs.end(), ArgStr.begin(), ArgStr.end()); 710 // using \00 to seperate each commandline options. 711 Opts.CmdArgs.push_back('\0'); 712 } 713 } 714 } 715 716 Opts.InstrumentFunctions = Args.hasArg(OPT_finstrument_functions); 717 Opts.XRayInstrumentFunctions = Args.hasArg(OPT_fxray_instrument); 718 Opts.XRayInstructionThreshold = 719 getLastArgIntValue(Args, OPT_fxray_instruction_threshold_, 200, Diags); 720 Opts.InstrumentForProfiling = Args.hasArg(OPT_pg); 721 Opts.CallFEntry = Args.hasArg(OPT_mfentry); 722 Opts.EmitOpenCLArgMetadata = Args.hasArg(OPT_cl_kernel_arg_info); 723 Opts.CompressDebugSections = Args.hasArg(OPT_compress_debug_sections); 724 Opts.RelaxELFRelocations = Args.hasArg(OPT_mrelax_relocations); 725 Opts.DebugCompilationDir = Args.getLastArgValue(OPT_fdebug_compilation_dir); 726 for (auto A : Args.filtered(OPT_mlink_bitcode_file, OPT_mlink_cuda_bitcode)) { 727 CodeGenOptions::BitcodeFileToLink F; 728 F.Filename = A->getValue(); 729 if (A->getOption().matches(OPT_mlink_cuda_bitcode)) { 730 F.LinkFlags = llvm::Linker::Flags::LinkOnlyNeeded | 731 llvm::Linker::Flags::InternalizeLinkedSymbols; 732 // When linking CUDA bitcode, propagate function attributes so that 733 // e.g. libdevice gets fast-math attrs if we're building with fast-math. 734 F.PropagateAttrs = true; 735 } 736 Opts.LinkBitcodeFiles.push_back(F); 737 } 738 Opts.SanitizeCoverageType = 739 getLastArgIntValue(Args, OPT_fsanitize_coverage_type, 0, Diags); 740 Opts.SanitizeCoverageIndirectCalls = 741 Args.hasArg(OPT_fsanitize_coverage_indirect_calls); 742 Opts.SanitizeCoverageTraceBB = Args.hasArg(OPT_fsanitize_coverage_trace_bb); 743 Opts.SanitizeCoverageTraceCmp = Args.hasArg(OPT_fsanitize_coverage_trace_cmp); 744 Opts.SanitizeCoverageTraceDiv = Args.hasArg(OPT_fsanitize_coverage_trace_div); 745 Opts.SanitizeCoverageTraceGep = Args.hasArg(OPT_fsanitize_coverage_trace_gep); 746 Opts.SanitizeCoverage8bitCounters = 747 Args.hasArg(OPT_fsanitize_coverage_8bit_counters); 748 Opts.SanitizeCoverageTracePC = Args.hasArg(OPT_fsanitize_coverage_trace_pc); 749 Opts.SanitizeCoverageTracePCGuard = 750 Args.hasArg(OPT_fsanitize_coverage_trace_pc_guard); 751 Opts.SanitizeMemoryTrackOrigins = 752 getLastArgIntValue(Args, OPT_fsanitize_memory_track_origins_EQ, 0, Diags); 753 Opts.SanitizeMemoryUseAfterDtor = 754 Args.hasArg(OPT_fsanitize_memory_use_after_dtor); 755 Opts.SanitizeCfiCrossDso = Args.hasArg(OPT_fsanitize_cfi_cross_dso); 756 Opts.SanitizeStats = Args.hasArg(OPT_fsanitize_stats); 757 if (Arg *A = Args.getLastArg(OPT_fsanitize_address_use_after_scope, 758 OPT_fno_sanitize_address_use_after_scope)) { 759 Opts.SanitizeAddressUseAfterScope = 760 A->getOption().getID() == OPT_fsanitize_address_use_after_scope; 761 } 762 Opts.SSPBufferSize = 763 getLastArgIntValue(Args, OPT_stack_protector_buffer_size, 8, Diags); 764 Opts.StackRealignment = Args.hasArg(OPT_mstackrealign); 765 if (Arg *A = Args.getLastArg(OPT_mstack_alignment)) { 766 StringRef Val = A->getValue(); 767 unsigned StackAlignment = Opts.StackAlignment; 768 Val.getAsInteger(10, StackAlignment); 769 Opts.StackAlignment = StackAlignment; 770 } 771 772 if (Arg *A = Args.getLastArg(OPT_mstack_probe_size)) { 773 StringRef Val = A->getValue(); 774 unsigned StackProbeSize = Opts.StackProbeSize; 775 Val.getAsInteger(0, StackProbeSize); 776 Opts.StackProbeSize = StackProbeSize; 777 } 778 779 if (Arg *A = Args.getLastArg(OPT_fobjc_dispatch_method_EQ)) { 780 StringRef Name = A->getValue(); 781 unsigned Method = llvm::StringSwitch<unsigned>(Name) 782 .Case("legacy", CodeGenOptions::Legacy) 783 .Case("non-legacy", CodeGenOptions::NonLegacy) 784 .Case("mixed", CodeGenOptions::Mixed) 785 .Default(~0U); 786 if (Method == ~0U) { 787 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Name; 788 Success = false; 789 } else { 790 Opts.setObjCDispatchMethod( 791 static_cast<CodeGenOptions::ObjCDispatchMethodKind>(Method)); 792 } 793 } 794 795 Opts.EmulatedTLS = 796 Args.hasFlag(OPT_femulated_tls, OPT_fno_emulated_tls, false); 797 798 if (Arg *A = Args.getLastArg(OPT_ftlsmodel_EQ)) { 799 StringRef Name = A->getValue(); 800 unsigned Model = llvm::StringSwitch<unsigned>(Name) 801 .Case("global-dynamic", CodeGenOptions::GeneralDynamicTLSModel) 802 .Case("local-dynamic", CodeGenOptions::LocalDynamicTLSModel) 803 .Case("initial-exec", CodeGenOptions::InitialExecTLSModel) 804 .Case("local-exec", CodeGenOptions::LocalExecTLSModel) 805 .Default(~0U); 806 if (Model == ~0U) { 807 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Name; 808 Success = false; 809 } else { 810 Opts.setDefaultTLSModel(static_cast<CodeGenOptions::TLSModel>(Model)); 811 } 812 } 813 814 if (Arg *A = Args.getLastArg(OPT_ffp_contract)) { 815 StringRef Val = A->getValue(); 816 if (Val == "fast") 817 Opts.setFPContractMode(CodeGenOptions::FPC_Fast); 818 else if (Val == "on") 819 Opts.setFPContractMode(CodeGenOptions::FPC_On); 820 else if (Val == "off") 821 Opts.setFPContractMode(CodeGenOptions::FPC_Off); 822 else 823 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Val; 824 } 825 826 if (Arg *A = Args.getLastArg(OPT_fdenormal_fp_math_EQ)) { 827 StringRef Val = A->getValue(); 828 if (Val == "ieee") 829 Opts.FPDenormalMode = "ieee"; 830 else if (Val == "preserve-sign") 831 Opts.FPDenormalMode = "preserve-sign"; 832 else if (Val == "positive-zero") 833 Opts.FPDenormalMode = "positive-zero"; 834 else 835 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Val; 836 } 837 838 if (Arg *A = Args.getLastArg(OPT_fpcc_struct_return, OPT_freg_struct_return)) { 839 if (A->getOption().matches(OPT_fpcc_struct_return)) { 840 Opts.setStructReturnConvention(CodeGenOptions::SRCK_OnStack); 841 } else { 842 assert(A->getOption().matches(OPT_freg_struct_return)); 843 Opts.setStructReturnConvention(CodeGenOptions::SRCK_InRegs); 844 } 845 } 846 847 Opts.DependentLibraries = Args.getAllArgValues(OPT_dependent_lib); 848 Opts.LinkerOptions = Args.getAllArgValues(OPT_linker_option); 849 bool NeedLocTracking = false; 850 851 Opts.OptRecordFile = Args.getLastArgValue(OPT_opt_record_file); 852 if (!Opts.OptRecordFile.empty()) 853 NeedLocTracking = true; 854 855 if (Arg *A = Args.getLastArg(OPT_Rpass_EQ)) { 856 Opts.OptimizationRemarkPattern = 857 GenerateOptimizationRemarkRegex(Diags, Args, A); 858 NeedLocTracking = true; 859 } 860 861 if (Arg *A = Args.getLastArg(OPT_Rpass_missed_EQ)) { 862 Opts.OptimizationRemarkMissedPattern = 863 GenerateOptimizationRemarkRegex(Diags, Args, A); 864 NeedLocTracking = true; 865 } 866 867 if (Arg *A = Args.getLastArg(OPT_Rpass_analysis_EQ)) { 868 Opts.OptimizationRemarkAnalysisPattern = 869 GenerateOptimizationRemarkRegex(Diags, Args, A); 870 NeedLocTracking = true; 871 } 872 873 Opts.DiagnosticsWithHotness = 874 Args.hasArg(options::OPT_fdiagnostics_show_hotness); 875 if (Opts.DiagnosticsWithHotness && 876 Opts.getProfileUse() == CodeGenOptions::ProfileNone) 877 Diags.Report(diag::warn_drv_fdiagnostics_show_hotness_requires_pgo); 878 879 // If the user requested to use a sample profile for PGO, then the 880 // backend will need to track source location information so the profile 881 // can be incorporated into the IR. 882 if (!Opts.SampleProfileFile.empty()) 883 NeedLocTracking = true; 884 885 // If the user requested a flag that requires source locations available in 886 // the backend, make sure that the backend tracks source location information. 887 if (NeedLocTracking && Opts.getDebugInfo() == codegenoptions::NoDebugInfo) 888 Opts.setDebugInfo(codegenoptions::LocTrackingOnly); 889 890 Opts.RewriteMapFiles = Args.getAllArgValues(OPT_frewrite_map_file); 891 892 // Parse -fsanitize-recover= arguments. 893 // FIXME: Report unrecoverable sanitizers incorrectly specified here. 894 parseSanitizerKinds("-fsanitize-recover=", 895 Args.getAllArgValues(OPT_fsanitize_recover_EQ), Diags, 896 Opts.SanitizeRecover); 897 parseSanitizerKinds("-fsanitize-trap=", 898 Args.getAllArgValues(OPT_fsanitize_trap_EQ), Diags, 899 Opts.SanitizeTrap); 900 901 Opts.CudaGpuBinaryFileNames = 902 Args.getAllArgValues(OPT_fcuda_include_gpubinary); 903 904 Opts.Backchain = Args.hasArg(OPT_mbackchain); 905 906 Opts.EmitCheckPathComponentsToStrip = getLastArgIntValue( 907 Args, OPT_fsanitize_undefined_strip_path_components_EQ, 0, Diags); 908 909 return Success; 910 } 911 912 static void ParseDependencyOutputArgs(DependencyOutputOptions &Opts, 913 ArgList &Args) { 914 using namespace options; 915 Opts.OutputFile = Args.getLastArgValue(OPT_dependency_file); 916 Opts.Targets = Args.getAllArgValues(OPT_MT); 917 Opts.IncludeSystemHeaders = Args.hasArg(OPT_sys_header_deps); 918 Opts.IncludeModuleFiles = Args.hasArg(OPT_module_file_deps); 919 Opts.UsePhonyTargets = Args.hasArg(OPT_MP); 920 Opts.ShowHeaderIncludes = Args.hasArg(OPT_H); 921 Opts.HeaderIncludeOutputFile = Args.getLastArgValue(OPT_header_include_file); 922 Opts.AddMissingHeaderDeps = Args.hasArg(OPT_MG); 923 Opts.PrintShowIncludes = Args.hasArg(OPT_show_includes); 924 Opts.DOTOutputFile = Args.getLastArgValue(OPT_dependency_dot); 925 Opts.ModuleDependencyOutputDir = 926 Args.getLastArgValue(OPT_module_dependency_dir); 927 if (Args.hasArg(OPT_MV)) 928 Opts.OutputFormat = DependencyOutputFormat::NMake; 929 // Add sanitizer blacklists as extra dependencies. 930 // They won't be discovered by the regular preprocessor, so 931 // we let make / ninja to know about this implicit dependency. 932 Opts.ExtraDeps = Args.getAllArgValues(OPT_fdepfile_entry); 933 auto ModuleFiles = Args.getAllArgValues(OPT_fmodule_file); 934 Opts.ExtraDeps.insert(Opts.ExtraDeps.end(), ModuleFiles.begin(), 935 ModuleFiles.end()); 936 } 937 938 static bool parseShowColorsArgs(const ArgList &Args, bool DefaultColor) { 939 // Color diagnostics default to auto ("on" if terminal supports) in the driver 940 // but default to off in cc1, needing an explicit OPT_fdiagnostics_color. 941 // Support both clang's -f[no-]color-diagnostics and gcc's 942 // -f[no-]diagnostics-colors[=never|always|auto]. 943 enum { 944 Colors_On, 945 Colors_Off, 946 Colors_Auto 947 } ShowColors = DefaultColor ? Colors_Auto : Colors_Off; 948 for (Arg *A : Args) { 949 const Option &O = A->getOption(); 950 if (O.matches(options::OPT_fcolor_diagnostics) || 951 O.matches(options::OPT_fdiagnostics_color)) { 952 ShowColors = Colors_On; 953 } else if (O.matches(options::OPT_fno_color_diagnostics) || 954 O.matches(options::OPT_fno_diagnostics_color)) { 955 ShowColors = Colors_Off; 956 } else if (O.matches(options::OPT_fdiagnostics_color_EQ)) { 957 StringRef Value(A->getValue()); 958 if (Value == "always") 959 ShowColors = Colors_On; 960 else if (Value == "never") 961 ShowColors = Colors_Off; 962 else if (Value == "auto") 963 ShowColors = Colors_Auto; 964 } 965 } 966 return ShowColors == Colors_On || 967 (ShowColors == Colors_Auto && 968 llvm::sys::Process::StandardErrHasColors()); 969 } 970 971 bool clang::ParseDiagnosticArgs(DiagnosticOptions &Opts, ArgList &Args, 972 DiagnosticsEngine *Diags, 973 bool DefaultDiagColor, bool DefaultShowOpt) { 974 using namespace options; 975 bool Success = true; 976 977 Opts.DiagnosticLogFile = Args.getLastArgValue(OPT_diagnostic_log_file); 978 if (Arg *A = 979 Args.getLastArg(OPT_diagnostic_serialized_file, OPT__serialize_diags)) 980 Opts.DiagnosticSerializationFile = A->getValue(); 981 Opts.IgnoreWarnings = Args.hasArg(OPT_w); 982 Opts.NoRewriteMacros = Args.hasArg(OPT_Wno_rewrite_macros); 983 Opts.Pedantic = Args.hasArg(OPT_pedantic); 984 Opts.PedanticErrors = Args.hasArg(OPT_pedantic_errors); 985 Opts.ShowCarets = !Args.hasArg(OPT_fno_caret_diagnostics); 986 Opts.ShowColors = parseShowColorsArgs(Args, DefaultDiagColor); 987 Opts.ShowColumn = Args.hasFlag(OPT_fshow_column, 988 OPT_fno_show_column, 989 /*Default=*/true); 990 Opts.ShowFixits = !Args.hasArg(OPT_fno_diagnostics_fixit_info); 991 Opts.ShowLocation = !Args.hasArg(OPT_fno_show_source_location); 992 Opts.AbsolutePath = Args.hasArg(OPT_fdiagnostics_absolute_paths); 993 Opts.ShowOptionNames = 994 Args.hasFlag(OPT_fdiagnostics_show_option, 995 OPT_fno_diagnostics_show_option, DefaultShowOpt); 996 997 llvm::sys::Process::UseANSIEscapeCodes(Args.hasArg(OPT_fansi_escape_codes)); 998 999 // Default behavior is to not to show note include stacks. 1000 Opts.ShowNoteIncludeStack = false; 1001 if (Arg *A = Args.getLastArg(OPT_fdiagnostics_show_note_include_stack, 1002 OPT_fno_diagnostics_show_note_include_stack)) 1003 if (A->getOption().matches(OPT_fdiagnostics_show_note_include_stack)) 1004 Opts.ShowNoteIncludeStack = true; 1005 1006 StringRef ShowOverloads = 1007 Args.getLastArgValue(OPT_fshow_overloads_EQ, "all"); 1008 if (ShowOverloads == "best") 1009 Opts.setShowOverloads(Ovl_Best); 1010 else if (ShowOverloads == "all") 1011 Opts.setShowOverloads(Ovl_All); 1012 else { 1013 Success = false; 1014 if (Diags) 1015 Diags->Report(diag::err_drv_invalid_value) 1016 << Args.getLastArg(OPT_fshow_overloads_EQ)->getAsString(Args) 1017 << ShowOverloads; 1018 } 1019 1020 StringRef ShowCategory = 1021 Args.getLastArgValue(OPT_fdiagnostics_show_category, "none"); 1022 if (ShowCategory == "none") 1023 Opts.ShowCategories = 0; 1024 else if (ShowCategory == "id") 1025 Opts.ShowCategories = 1; 1026 else if (ShowCategory == "name") 1027 Opts.ShowCategories = 2; 1028 else { 1029 Success = false; 1030 if (Diags) 1031 Diags->Report(diag::err_drv_invalid_value) 1032 << Args.getLastArg(OPT_fdiagnostics_show_category)->getAsString(Args) 1033 << ShowCategory; 1034 } 1035 1036 StringRef Format = 1037 Args.getLastArgValue(OPT_fdiagnostics_format, "clang"); 1038 if (Format == "clang") 1039 Opts.setFormat(DiagnosticOptions::Clang); 1040 else if (Format == "msvc") 1041 Opts.setFormat(DiagnosticOptions::MSVC); 1042 else if (Format == "msvc-fallback") { 1043 Opts.setFormat(DiagnosticOptions::MSVC); 1044 Opts.CLFallbackMode = true; 1045 } else if (Format == "vi") 1046 Opts.setFormat(DiagnosticOptions::Vi); 1047 else { 1048 Success = false; 1049 if (Diags) 1050 Diags->Report(diag::err_drv_invalid_value) 1051 << Args.getLastArg(OPT_fdiagnostics_format)->getAsString(Args) 1052 << Format; 1053 } 1054 1055 Opts.ShowSourceRanges = Args.hasArg(OPT_fdiagnostics_print_source_range_info); 1056 Opts.ShowParseableFixits = Args.hasArg(OPT_fdiagnostics_parseable_fixits); 1057 Opts.ShowPresumedLoc = !Args.hasArg(OPT_fno_diagnostics_use_presumed_location); 1058 Opts.VerifyDiagnostics = Args.hasArg(OPT_verify); 1059 DiagnosticLevelMask DiagMask = DiagnosticLevelMask::None; 1060 Success &= parseDiagnosticLevelMask("-verify-ignore-unexpected=", 1061 Args.getAllArgValues(OPT_verify_ignore_unexpected_EQ), 1062 Diags, DiagMask); 1063 if (Args.hasArg(OPT_verify_ignore_unexpected)) 1064 DiagMask = DiagnosticLevelMask::All; 1065 Opts.setVerifyIgnoreUnexpected(DiagMask); 1066 Opts.ElideType = !Args.hasArg(OPT_fno_elide_type); 1067 Opts.ShowTemplateTree = Args.hasArg(OPT_fdiagnostics_show_template_tree); 1068 Opts.ErrorLimit = getLastArgIntValue(Args, OPT_ferror_limit, 0, Diags); 1069 Opts.MacroBacktraceLimit = 1070 getLastArgIntValue(Args, OPT_fmacro_backtrace_limit, 1071 DiagnosticOptions::DefaultMacroBacktraceLimit, Diags); 1072 Opts.TemplateBacktraceLimit = getLastArgIntValue( 1073 Args, OPT_ftemplate_backtrace_limit, 1074 DiagnosticOptions::DefaultTemplateBacktraceLimit, Diags); 1075 Opts.ConstexprBacktraceLimit = getLastArgIntValue( 1076 Args, OPT_fconstexpr_backtrace_limit, 1077 DiagnosticOptions::DefaultConstexprBacktraceLimit, Diags); 1078 Opts.SpellCheckingLimit = getLastArgIntValue( 1079 Args, OPT_fspell_checking_limit, 1080 DiagnosticOptions::DefaultSpellCheckingLimit, Diags); 1081 Opts.TabStop = getLastArgIntValue(Args, OPT_ftabstop, 1082 DiagnosticOptions::DefaultTabStop, Diags); 1083 if (Opts.TabStop == 0 || Opts.TabStop > DiagnosticOptions::MaxTabStop) { 1084 Opts.TabStop = DiagnosticOptions::DefaultTabStop; 1085 if (Diags) 1086 Diags->Report(diag::warn_ignoring_ftabstop_value) 1087 << Opts.TabStop << DiagnosticOptions::DefaultTabStop; 1088 } 1089 Opts.MessageLength = getLastArgIntValue(Args, OPT_fmessage_length, 0, Diags); 1090 addDiagnosticArgs(Args, OPT_W_Group, OPT_W_value_Group, Opts.Warnings); 1091 addDiagnosticArgs(Args, OPT_R_Group, OPT_R_value_Group, Opts.Remarks); 1092 1093 return Success; 1094 } 1095 1096 static void ParseFileSystemArgs(FileSystemOptions &Opts, ArgList &Args) { 1097 Opts.WorkingDir = Args.getLastArgValue(OPT_working_directory); 1098 } 1099 1100 /// Parse the argument to the -ftest-module-file-extension 1101 /// command-line argument. 1102 /// 1103 /// \returns true on error, false on success. 1104 static bool parseTestModuleFileExtensionArg(StringRef Arg, 1105 std::string &BlockName, 1106 unsigned &MajorVersion, 1107 unsigned &MinorVersion, 1108 bool &Hashed, 1109 std::string &UserInfo) { 1110 SmallVector<StringRef, 5> Args; 1111 Arg.split(Args, ':', 5); 1112 if (Args.size() < 5) 1113 return true; 1114 1115 BlockName = Args[0]; 1116 if (Args[1].getAsInteger(10, MajorVersion)) return true; 1117 if (Args[2].getAsInteger(10, MinorVersion)) return true; 1118 if (Args[3].getAsInteger(2, Hashed)) return true; 1119 if (Args.size() > 4) 1120 UserInfo = Args[4]; 1121 return false; 1122 } 1123 1124 static InputKind ParseFrontendArgs(FrontendOptions &Opts, ArgList &Args, 1125 DiagnosticsEngine &Diags, 1126 bool &IsHeaderFile) { 1127 using namespace options; 1128 Opts.ProgramAction = frontend::ParseSyntaxOnly; 1129 if (const Arg *A = Args.getLastArg(OPT_Action_Group)) { 1130 switch (A->getOption().getID()) { 1131 default: 1132 llvm_unreachable("Invalid option in group!"); 1133 case OPT_ast_list: 1134 Opts.ProgramAction = frontend::ASTDeclList; break; 1135 case OPT_ast_dump: 1136 case OPT_ast_dump_all: 1137 case OPT_ast_dump_lookups: 1138 Opts.ProgramAction = frontend::ASTDump; break; 1139 case OPT_ast_print: 1140 Opts.ProgramAction = frontend::ASTPrint; break; 1141 case OPT_ast_view: 1142 Opts.ProgramAction = frontend::ASTView; break; 1143 case OPT_dump_raw_tokens: 1144 Opts.ProgramAction = frontend::DumpRawTokens; break; 1145 case OPT_dump_tokens: 1146 Opts.ProgramAction = frontend::DumpTokens; break; 1147 case OPT_S: 1148 Opts.ProgramAction = frontend::EmitAssembly; break; 1149 case OPT_emit_llvm_bc: 1150 Opts.ProgramAction = frontend::EmitBC; break; 1151 case OPT_emit_html: 1152 Opts.ProgramAction = frontend::EmitHTML; break; 1153 case OPT_emit_llvm: 1154 Opts.ProgramAction = frontend::EmitLLVM; break; 1155 case OPT_emit_llvm_only: 1156 Opts.ProgramAction = frontend::EmitLLVMOnly; break; 1157 case OPT_emit_codegen_only: 1158 Opts.ProgramAction = frontend::EmitCodeGenOnly; break; 1159 case OPT_emit_obj: 1160 Opts.ProgramAction = frontend::EmitObj; break; 1161 case OPT_fixit_EQ: 1162 Opts.FixItSuffix = A->getValue(); 1163 // fall-through! 1164 case OPT_fixit: 1165 Opts.ProgramAction = frontend::FixIt; break; 1166 case OPT_emit_module: 1167 Opts.ProgramAction = frontend::GenerateModule; break; 1168 case OPT_emit_module_interface: 1169 Opts.ProgramAction = frontend::GenerateModuleInterface; break; 1170 case OPT_emit_pch: 1171 Opts.ProgramAction = frontend::GeneratePCH; break; 1172 case OPT_emit_pth: 1173 Opts.ProgramAction = frontend::GeneratePTH; break; 1174 case OPT_init_only: 1175 Opts.ProgramAction = frontend::InitOnly; break; 1176 case OPT_fsyntax_only: 1177 Opts.ProgramAction = frontend::ParseSyntaxOnly; break; 1178 case OPT_module_file_info: 1179 Opts.ProgramAction = frontend::ModuleFileInfo; break; 1180 case OPT_verify_pch: 1181 Opts.ProgramAction = frontend::VerifyPCH; break; 1182 case OPT_print_decl_contexts: 1183 Opts.ProgramAction = frontend::PrintDeclContext; break; 1184 case OPT_print_preamble: 1185 Opts.ProgramAction = frontend::PrintPreamble; break; 1186 case OPT_E: 1187 Opts.ProgramAction = frontend::PrintPreprocessedInput; break; 1188 case OPT_rewrite_macros: 1189 Opts.ProgramAction = frontend::RewriteMacros; break; 1190 case OPT_rewrite_objc: 1191 Opts.ProgramAction = frontend::RewriteObjC; break; 1192 case OPT_rewrite_test: 1193 Opts.ProgramAction = frontend::RewriteTest; break; 1194 case OPT_analyze: 1195 Opts.ProgramAction = frontend::RunAnalysis; break; 1196 case OPT_migrate: 1197 Opts.ProgramAction = frontend::MigrateSource; break; 1198 case OPT_Eonly: 1199 Opts.ProgramAction = frontend::RunPreprocessorOnly; break; 1200 } 1201 } 1202 1203 if (const Arg* A = Args.getLastArg(OPT_plugin)) { 1204 Opts.Plugins.emplace_back(A->getValue(0)); 1205 Opts.ProgramAction = frontend::PluginAction; 1206 Opts.ActionName = A->getValue(); 1207 } 1208 Opts.AddPluginActions = Args.getAllArgValues(OPT_add_plugin); 1209 for (const Arg *AA : Args.filtered(OPT_plugin_arg)) 1210 Opts.PluginArgs[AA->getValue(0)].emplace_back(AA->getValue(1)); 1211 1212 for (const std::string &Arg : 1213 Args.getAllArgValues(OPT_ftest_module_file_extension_EQ)) { 1214 std::string BlockName; 1215 unsigned MajorVersion; 1216 unsigned MinorVersion; 1217 bool Hashed; 1218 std::string UserInfo; 1219 if (parseTestModuleFileExtensionArg(Arg, BlockName, MajorVersion, 1220 MinorVersion, Hashed, UserInfo)) { 1221 Diags.Report(diag::err_test_module_file_extension_format) << Arg; 1222 1223 continue; 1224 } 1225 1226 // Add the testing module file extension. 1227 Opts.ModuleFileExtensions.push_back( 1228 std::make_shared<TestModuleFileExtension>( 1229 BlockName, MajorVersion, MinorVersion, Hashed, UserInfo)); 1230 } 1231 1232 if (const Arg *A = Args.getLastArg(OPT_code_completion_at)) { 1233 Opts.CodeCompletionAt = 1234 ParsedSourceLocation::FromString(A->getValue()); 1235 if (Opts.CodeCompletionAt.FileName.empty()) 1236 Diags.Report(diag::err_drv_invalid_value) 1237 << A->getAsString(Args) << A->getValue(); 1238 } 1239 Opts.DisableFree = Args.hasArg(OPT_disable_free); 1240 1241 Opts.OutputFile = Args.getLastArgValue(OPT_o); 1242 Opts.Plugins = Args.getAllArgValues(OPT_load); 1243 Opts.RelocatablePCH = Args.hasArg(OPT_relocatable_pch); 1244 Opts.ShowHelp = Args.hasArg(OPT_help); 1245 Opts.ShowStats = Args.hasArg(OPT_print_stats); 1246 Opts.ShowTimers = Args.hasArg(OPT_ftime_report); 1247 Opts.ShowVersion = Args.hasArg(OPT_version); 1248 Opts.ASTMergeFiles = Args.getAllArgValues(OPT_ast_merge); 1249 Opts.LLVMArgs = Args.getAllArgValues(OPT_mllvm); 1250 Opts.FixWhatYouCan = Args.hasArg(OPT_fix_what_you_can); 1251 Opts.FixOnlyWarnings = Args.hasArg(OPT_fix_only_warnings); 1252 Opts.FixAndRecompile = Args.hasArg(OPT_fixit_recompile); 1253 Opts.FixToTemporaries = Args.hasArg(OPT_fixit_to_temp); 1254 Opts.ASTDumpDecls = Args.hasArg(OPT_ast_dump); 1255 Opts.ASTDumpAll = Args.hasArg(OPT_ast_dump_all); 1256 Opts.ASTDumpFilter = Args.getLastArgValue(OPT_ast_dump_filter); 1257 Opts.ASTDumpLookups = Args.hasArg(OPT_ast_dump_lookups); 1258 Opts.UseGlobalModuleIndex = !Args.hasArg(OPT_fno_modules_global_index); 1259 Opts.GenerateGlobalModuleIndex = Opts.UseGlobalModuleIndex; 1260 Opts.ModuleMapFiles = Args.getAllArgValues(OPT_fmodule_map_file); 1261 Opts.ModuleFiles = Args.getAllArgValues(OPT_fmodule_file); 1262 Opts.ModulesEmbedFiles = Args.getAllArgValues(OPT_fmodules_embed_file_EQ); 1263 Opts.ModulesEmbedAllFiles = Args.hasArg(OPT_fmodules_embed_all_files); 1264 Opts.IncludeTimestamps = !Args.hasArg(OPT_fno_pch_timestamp); 1265 1266 Opts.CodeCompleteOpts.IncludeMacros 1267 = Args.hasArg(OPT_code_completion_macros); 1268 Opts.CodeCompleteOpts.IncludeCodePatterns 1269 = Args.hasArg(OPT_code_completion_patterns); 1270 Opts.CodeCompleteOpts.IncludeGlobals 1271 = !Args.hasArg(OPT_no_code_completion_globals); 1272 Opts.CodeCompleteOpts.IncludeBriefComments 1273 = Args.hasArg(OPT_code_completion_brief_comments); 1274 1275 Opts.OverrideRecordLayoutsFile 1276 = Args.getLastArgValue(OPT_foverride_record_layout_EQ); 1277 Opts.AuxTriple = 1278 llvm::Triple::normalize(Args.getLastArgValue(OPT_aux_triple)); 1279 Opts.FindPchSource = Args.getLastArgValue(OPT_find_pch_source_EQ); 1280 Opts.StatsFile = Args.getLastArgValue(OPT_stats_file); 1281 1282 if (const Arg *A = Args.getLastArg(OPT_arcmt_check, 1283 OPT_arcmt_modify, 1284 OPT_arcmt_migrate)) { 1285 switch (A->getOption().getID()) { 1286 default: 1287 llvm_unreachable("missed a case"); 1288 case OPT_arcmt_check: 1289 Opts.ARCMTAction = FrontendOptions::ARCMT_Check; 1290 break; 1291 case OPT_arcmt_modify: 1292 Opts.ARCMTAction = FrontendOptions::ARCMT_Modify; 1293 break; 1294 case OPT_arcmt_migrate: 1295 Opts.ARCMTAction = FrontendOptions::ARCMT_Migrate; 1296 break; 1297 } 1298 } 1299 Opts.MTMigrateDir = Args.getLastArgValue(OPT_mt_migrate_directory); 1300 Opts.ARCMTMigrateReportOut 1301 = Args.getLastArgValue(OPT_arcmt_migrate_report_output); 1302 Opts.ARCMTMigrateEmitARCErrors 1303 = Args.hasArg(OPT_arcmt_migrate_emit_arc_errors); 1304 1305 if (Args.hasArg(OPT_objcmt_migrate_literals)) 1306 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_Literals; 1307 if (Args.hasArg(OPT_objcmt_migrate_subscripting)) 1308 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_Subscripting; 1309 if (Args.hasArg(OPT_objcmt_migrate_property_dot_syntax)) 1310 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_PropertyDotSyntax; 1311 if (Args.hasArg(OPT_objcmt_migrate_property)) 1312 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_Property; 1313 if (Args.hasArg(OPT_objcmt_migrate_readonly_property)) 1314 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_ReadonlyProperty; 1315 if (Args.hasArg(OPT_objcmt_migrate_readwrite_property)) 1316 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_ReadwriteProperty; 1317 if (Args.hasArg(OPT_objcmt_migrate_annotation)) 1318 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_Annotation; 1319 if (Args.hasArg(OPT_objcmt_returns_innerpointer_property)) 1320 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_ReturnsInnerPointerProperty; 1321 if (Args.hasArg(OPT_objcmt_migrate_instancetype)) 1322 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_Instancetype; 1323 if (Args.hasArg(OPT_objcmt_migrate_nsmacros)) 1324 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_NsMacros; 1325 if (Args.hasArg(OPT_objcmt_migrate_protocol_conformance)) 1326 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_ProtocolConformance; 1327 if (Args.hasArg(OPT_objcmt_atomic_property)) 1328 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_AtomicProperty; 1329 if (Args.hasArg(OPT_objcmt_ns_nonatomic_iosonly)) 1330 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_NsAtomicIOSOnlyProperty; 1331 if (Args.hasArg(OPT_objcmt_migrate_designated_init)) 1332 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_DesignatedInitializer; 1333 if (Args.hasArg(OPT_objcmt_migrate_all)) 1334 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_MigrateDecls; 1335 1336 Opts.ObjCMTWhiteListPath = Args.getLastArgValue(OPT_objcmt_whitelist_dir_path); 1337 1338 if (Opts.ARCMTAction != FrontendOptions::ARCMT_None && 1339 Opts.ObjCMTAction != FrontendOptions::ObjCMT_None) { 1340 Diags.Report(diag::err_drv_argument_not_allowed_with) 1341 << "ARC migration" << "ObjC migration"; 1342 } 1343 1344 InputKind DashX = IK_None; 1345 if (const Arg *A = Args.getLastArg(OPT_x)) { 1346 DashX = llvm::StringSwitch<InputKind>(A->getValue()) 1347 .Case("c", IK_C) 1348 .Case("cl", IK_OpenCL) 1349 .Case("cuda", IK_CUDA) 1350 .Case("c++", IK_CXX) 1351 .Case("c++-module", IK_CXX) 1352 .Case("objective-c", IK_ObjC) 1353 .Case("objective-c++", IK_ObjCXX) 1354 .Case("cpp-output", IK_PreprocessedC) 1355 .Case("assembler-with-cpp", IK_Asm) 1356 .Case("c++-cpp-output", IK_PreprocessedCXX) 1357 .Case("c++-module-cpp-output", IK_PreprocessedCXX) 1358 .Case("cuda-cpp-output", IK_PreprocessedCuda) 1359 .Case("objective-c-cpp-output", IK_PreprocessedObjC) 1360 .Case("objc-cpp-output", IK_PreprocessedObjC) 1361 .Case("objective-c++-cpp-output", IK_PreprocessedObjCXX) 1362 .Case("objc++-cpp-output", IK_PreprocessedObjCXX) 1363 .Case("c-header", IK_C) 1364 .Case("cl-header", IK_OpenCL) 1365 .Case("objective-c-header", IK_ObjC) 1366 .Case("c++-header", IK_CXX) 1367 .Case("objective-c++-header", IK_ObjCXX) 1368 .Cases("ast", "pcm", IK_AST) 1369 .Case("ir", IK_LLVM_IR) 1370 .Case("renderscript", IK_RenderScript) 1371 .Default(IK_None); 1372 if (DashX == IK_None) 1373 Diags.Report(diag::err_drv_invalid_value) 1374 << A->getAsString(Args) << A->getValue(); 1375 IsHeaderFile = llvm::StringSwitch<bool>(A->getValue()) 1376 .Case("c-header", true) 1377 .Case("cl-header", true) 1378 .Case("objective-c-header", true) 1379 .Case("c++-header", true) 1380 .Case("objective-c++-header", true) 1381 .Default(false); 1382 } 1383 1384 // '-' is the default input if none is given. 1385 std::vector<std::string> Inputs = Args.getAllArgValues(OPT_INPUT); 1386 Opts.Inputs.clear(); 1387 if (Inputs.empty()) 1388 Inputs.push_back("-"); 1389 for (unsigned i = 0, e = Inputs.size(); i != e; ++i) { 1390 InputKind IK = DashX; 1391 if (IK == IK_None) { 1392 IK = FrontendOptions::getInputKindForExtension( 1393 StringRef(Inputs[i]).rsplit('.').second); 1394 // FIXME: Remove this hack. 1395 if (i == 0) 1396 DashX = IK; 1397 } 1398 Opts.Inputs.emplace_back(std::move(Inputs[i]), IK); 1399 } 1400 1401 return DashX; 1402 } 1403 1404 std::string CompilerInvocation::GetResourcesPath(const char *Argv0, 1405 void *MainAddr) { 1406 std::string ClangExecutable = 1407 llvm::sys::fs::getMainExecutable(Argv0, MainAddr); 1408 StringRef Dir = llvm::sys::path::parent_path(ClangExecutable); 1409 1410 // Compute the path to the resource directory. 1411 StringRef ClangResourceDir(CLANG_RESOURCE_DIR); 1412 SmallString<128> P(Dir); 1413 if (ClangResourceDir != "") 1414 llvm::sys::path::append(P, ClangResourceDir); 1415 else 1416 llvm::sys::path::append(P, "..", Twine("lib") + CLANG_LIBDIR_SUFFIX, 1417 "clang", CLANG_VERSION_STRING); 1418 1419 return P.str(); 1420 } 1421 1422 static void ParseHeaderSearchArgs(HeaderSearchOptions &Opts, ArgList &Args) { 1423 using namespace options; 1424 Opts.Sysroot = Args.getLastArgValue(OPT_isysroot, "/"); 1425 Opts.Verbose = Args.hasArg(OPT_v); 1426 Opts.UseBuiltinIncludes = !Args.hasArg(OPT_nobuiltininc); 1427 Opts.UseStandardSystemIncludes = !Args.hasArg(OPT_nostdsysteminc); 1428 Opts.UseStandardCXXIncludes = !Args.hasArg(OPT_nostdincxx); 1429 if (const Arg *A = Args.getLastArg(OPT_stdlib_EQ)) 1430 Opts.UseLibcxx = (strcmp(A->getValue(), "libc++") == 0); 1431 Opts.ResourceDir = Args.getLastArgValue(OPT_resource_dir); 1432 Opts.ModuleCachePath = Args.getLastArgValue(OPT_fmodules_cache_path); 1433 Opts.ModuleUserBuildPath = Args.getLastArgValue(OPT_fmodules_user_build_path); 1434 for (const Arg *A : Args.filtered(OPT_fprebuilt_module_path)) 1435 Opts.AddPrebuiltModulePath(A->getValue()); 1436 Opts.DisableModuleHash = Args.hasArg(OPT_fdisable_module_hash); 1437 Opts.ModulesValidateDiagnosticOptions = 1438 !Args.hasArg(OPT_fmodules_disable_diagnostic_validation); 1439 Opts.ImplicitModuleMaps = Args.hasArg(OPT_fimplicit_module_maps); 1440 Opts.ModuleMapFileHomeIsCwd = Args.hasArg(OPT_fmodule_map_file_home_is_cwd); 1441 Opts.ModuleCachePruneInterval = 1442 getLastArgIntValue(Args, OPT_fmodules_prune_interval, 7 * 24 * 60 * 60); 1443 Opts.ModuleCachePruneAfter = 1444 getLastArgIntValue(Args, OPT_fmodules_prune_after, 31 * 24 * 60 * 60); 1445 Opts.ModulesValidateOncePerBuildSession = 1446 Args.hasArg(OPT_fmodules_validate_once_per_build_session); 1447 Opts.BuildSessionTimestamp = 1448 getLastArgUInt64Value(Args, OPT_fbuild_session_timestamp, 0); 1449 Opts.ModulesValidateSystemHeaders = 1450 Args.hasArg(OPT_fmodules_validate_system_headers); 1451 if (const Arg *A = Args.getLastArg(OPT_fmodule_format_EQ)) 1452 Opts.ModuleFormat = A->getValue(); 1453 1454 for (const Arg *A : Args.filtered(OPT_fmodules_ignore_macro)) { 1455 StringRef MacroDef = A->getValue(); 1456 Opts.ModulesIgnoreMacros.insert( 1457 llvm::CachedHashString(MacroDef.split('=').first)); 1458 } 1459 1460 // Add -I..., -F..., and -index-header-map options in order. 1461 bool IsIndexHeaderMap = false; 1462 bool IsSysrootSpecified = 1463 Args.hasArg(OPT__sysroot_EQ) || Args.hasArg(OPT_isysroot); 1464 for (const Arg *A : Args.filtered(OPT_I, OPT_F, OPT_index_header_map)) { 1465 if (A->getOption().matches(OPT_index_header_map)) { 1466 // -index-header-map applies to the next -I or -F. 1467 IsIndexHeaderMap = true; 1468 continue; 1469 } 1470 1471 frontend::IncludeDirGroup Group = 1472 IsIndexHeaderMap ? frontend::IndexHeaderMap : frontend::Angled; 1473 1474 bool IsFramework = A->getOption().matches(OPT_F); 1475 std::string Path = A->getValue(); 1476 1477 if (IsSysrootSpecified && !IsFramework && A->getValue()[0] == '=') { 1478 SmallString<32> Buffer; 1479 llvm::sys::path::append(Buffer, Opts.Sysroot, 1480 llvm::StringRef(A->getValue()).substr(1)); 1481 Path = Buffer.str(); 1482 } 1483 1484 Opts.AddPath(Path, Group, IsFramework, 1485 /*IgnoreSysroot*/ true); 1486 IsIndexHeaderMap = false; 1487 } 1488 1489 // Add -iprefix/-iwithprefix/-iwithprefixbefore options. 1490 StringRef Prefix = ""; // FIXME: This isn't the correct default prefix. 1491 for (const Arg *A : 1492 Args.filtered(OPT_iprefix, OPT_iwithprefix, OPT_iwithprefixbefore)) { 1493 if (A->getOption().matches(OPT_iprefix)) 1494 Prefix = A->getValue(); 1495 else if (A->getOption().matches(OPT_iwithprefix)) 1496 Opts.AddPath(Prefix.str() + A->getValue(), frontend::After, false, true); 1497 else 1498 Opts.AddPath(Prefix.str() + A->getValue(), frontend::Angled, false, true); 1499 } 1500 1501 for (const Arg *A : Args.filtered(OPT_idirafter)) 1502 Opts.AddPath(A->getValue(), frontend::After, false, true); 1503 for (const Arg *A : Args.filtered(OPT_iquote)) 1504 Opts.AddPath(A->getValue(), frontend::Quoted, false, true); 1505 for (const Arg *A : Args.filtered(OPT_isystem, OPT_iwithsysroot)) 1506 Opts.AddPath(A->getValue(), frontend::System, false, 1507 !A->getOption().matches(OPT_iwithsysroot)); 1508 for (const Arg *A : Args.filtered(OPT_iframework)) 1509 Opts.AddPath(A->getValue(), frontend::System, true, true); 1510 for (const Arg *A : Args.filtered(OPT_iframeworkwithsysroot)) 1511 Opts.AddPath(A->getValue(), frontend::System, /*IsFramework=*/true, 1512 /*IgnoreSysRoot=*/false); 1513 1514 // Add the paths for the various language specific isystem flags. 1515 for (const Arg *A : Args.filtered(OPT_c_isystem)) 1516 Opts.AddPath(A->getValue(), frontend::CSystem, false, true); 1517 for (const Arg *A : Args.filtered(OPT_cxx_isystem)) 1518 Opts.AddPath(A->getValue(), frontend::CXXSystem, false, true); 1519 for (const Arg *A : Args.filtered(OPT_objc_isystem)) 1520 Opts.AddPath(A->getValue(), frontend::ObjCSystem, false,true); 1521 for (const Arg *A : Args.filtered(OPT_objcxx_isystem)) 1522 Opts.AddPath(A->getValue(), frontend::ObjCXXSystem, false, true); 1523 1524 // Add the internal paths from a driver that detects standard include paths. 1525 for (const Arg *A : 1526 Args.filtered(OPT_internal_isystem, OPT_internal_externc_isystem)) { 1527 frontend::IncludeDirGroup Group = frontend::System; 1528 if (A->getOption().matches(OPT_internal_externc_isystem)) 1529 Group = frontend::ExternCSystem; 1530 Opts.AddPath(A->getValue(), Group, false, true); 1531 } 1532 1533 // Add the path prefixes which are implicitly treated as being system headers. 1534 for (const Arg *A : 1535 Args.filtered(OPT_system_header_prefix, OPT_no_system_header_prefix)) 1536 Opts.AddSystemHeaderPrefix( 1537 A->getValue(), A->getOption().matches(OPT_system_header_prefix)); 1538 1539 for (const Arg *A : Args.filtered(OPT_ivfsoverlay)) 1540 Opts.AddVFSOverlayFile(A->getValue()); 1541 } 1542 1543 void CompilerInvocation::setLangDefaults(LangOptions &Opts, InputKind IK, 1544 const llvm::Triple &T, 1545 PreprocessorOptions &PPOpts, 1546 LangStandard::Kind LangStd) { 1547 // Set some properties which depend solely on the input kind; it would be nice 1548 // to move these to the language standard, and have the driver resolve the 1549 // input kind + language standard. 1550 if (IK == IK_Asm) { 1551 Opts.AsmPreprocessor = 1; 1552 } else if (IK == IK_ObjC || 1553 IK == IK_ObjCXX || 1554 IK == IK_PreprocessedObjC || 1555 IK == IK_PreprocessedObjCXX) { 1556 Opts.ObjC1 = Opts.ObjC2 = 1; 1557 } 1558 1559 if (LangStd == LangStandard::lang_unspecified) { 1560 // Based on the base language, pick one. 1561 switch (IK) { 1562 case IK_None: 1563 case IK_AST: 1564 case IK_LLVM_IR: 1565 llvm_unreachable("Invalid input kind!"); 1566 case IK_OpenCL: 1567 LangStd = LangStandard::lang_opencl; 1568 break; 1569 case IK_CUDA: 1570 case IK_PreprocessedCuda: 1571 LangStd = LangStandard::lang_cuda; 1572 break; 1573 case IK_Asm: 1574 case IK_C: 1575 case IK_PreprocessedC: 1576 // The PS4 uses C99 as the default C standard. 1577 if (T.isPS4()) 1578 LangStd = LangStandard::lang_gnu99; 1579 else 1580 LangStd = LangStandard::lang_gnu11; 1581 break; 1582 case IK_ObjC: 1583 case IK_PreprocessedObjC: 1584 LangStd = LangStandard::lang_gnu11; 1585 break; 1586 case IK_CXX: 1587 case IK_PreprocessedCXX: 1588 case IK_ObjCXX: 1589 case IK_PreprocessedObjCXX: 1590 // The PS4 uses C++11 as the default C++ standard. 1591 if (T.isPS4()) 1592 LangStd = LangStandard::lang_gnucxx11; 1593 else 1594 LangStd = LangStandard::lang_gnucxx98; 1595 break; 1596 case IK_RenderScript: 1597 LangStd = LangStandard::lang_c99; 1598 break; 1599 } 1600 } 1601 1602 const LangStandard &Std = LangStandard::getLangStandardForKind(LangStd); 1603 Opts.LineComment = Std.hasLineComments(); 1604 Opts.C99 = Std.isC99(); 1605 Opts.C11 = Std.isC11(); 1606 Opts.CPlusPlus = Std.isCPlusPlus(); 1607 Opts.CPlusPlus11 = Std.isCPlusPlus11(); 1608 Opts.CPlusPlus14 = Std.isCPlusPlus14(); 1609 Opts.CPlusPlus1z = Std.isCPlusPlus1z(); 1610 Opts.Digraphs = Std.hasDigraphs(); 1611 Opts.GNUMode = Std.isGNUMode(); 1612 Opts.GNUInline = Std.isC89(); 1613 Opts.HexFloats = Std.hasHexFloats(); 1614 Opts.ImplicitInt = Std.hasImplicitInt(); 1615 1616 // Set OpenCL Version. 1617 Opts.OpenCL = Std.isOpenCL() || IK == IK_OpenCL; 1618 if (LangStd == LangStandard::lang_opencl) 1619 Opts.OpenCLVersion = 100; 1620 else if (LangStd == LangStandard::lang_opencl11) 1621 Opts.OpenCLVersion = 110; 1622 else if (LangStd == LangStandard::lang_opencl12) 1623 Opts.OpenCLVersion = 120; 1624 else if (LangStd == LangStandard::lang_opencl20) 1625 Opts.OpenCLVersion = 200; 1626 1627 // OpenCL has some additional defaults. 1628 if (Opts.OpenCL) { 1629 Opts.AltiVec = 0; 1630 Opts.ZVector = 0; 1631 Opts.CXXOperatorNames = 1; 1632 Opts.LaxVectorConversions = 0; 1633 Opts.DefaultFPContract = 1; 1634 Opts.NativeHalfType = 1; 1635 Opts.NativeHalfArgsAndReturns = 1; 1636 // Include default header file for OpenCL. 1637 if (Opts.IncludeDefaultHeader) { 1638 PPOpts.Includes.push_back("opencl-c.h"); 1639 } 1640 } 1641 1642 Opts.CUDA = IK == IK_CUDA || IK == IK_PreprocessedCuda || 1643 LangStd == LangStandard::lang_cuda; 1644 1645 Opts.RenderScript = IK == IK_RenderScript; 1646 if (Opts.RenderScript) { 1647 Opts.NativeHalfType = 1; 1648 Opts.NativeHalfArgsAndReturns = 1; 1649 } 1650 1651 // OpenCL and C++ both have bool, true, false keywords. 1652 Opts.Bool = Opts.OpenCL || Opts.CPlusPlus; 1653 1654 // OpenCL has half keyword 1655 Opts.Half = Opts.OpenCL; 1656 1657 // C++ has wchar_t keyword. 1658 Opts.WChar = Opts.CPlusPlus; 1659 1660 Opts.GNUKeywords = Opts.GNUMode; 1661 Opts.CXXOperatorNames = Opts.CPlusPlus; 1662 1663 Opts.AlignedAllocation = Opts.CPlusPlus1z; 1664 1665 Opts.DollarIdents = !Opts.AsmPreprocessor; 1666 } 1667 1668 /// Attempt to parse a visibility value out of the given argument. 1669 static Visibility parseVisibility(Arg *arg, ArgList &args, 1670 DiagnosticsEngine &diags) { 1671 StringRef value = arg->getValue(); 1672 if (value == "default") { 1673 return DefaultVisibility; 1674 } else if (value == "hidden" || value == "internal") { 1675 return HiddenVisibility; 1676 } else if (value == "protected") { 1677 // FIXME: diagnose if target does not support protected visibility 1678 return ProtectedVisibility; 1679 } 1680 1681 diags.Report(diag::err_drv_invalid_value) 1682 << arg->getAsString(args) << value; 1683 return DefaultVisibility; 1684 } 1685 1686 /// Check if input file kind and language standard are compatible. 1687 static bool IsInputCompatibleWithStandard(InputKind IK, 1688 const LangStandard &S) { 1689 switch (IK) { 1690 case IK_C: 1691 case IK_ObjC: 1692 case IK_PreprocessedC: 1693 case IK_PreprocessedObjC: 1694 if (S.isC89() || S.isC99()) 1695 return true; 1696 break; 1697 case IK_CXX: 1698 case IK_ObjCXX: 1699 case IK_PreprocessedCXX: 1700 case IK_PreprocessedObjCXX: 1701 if (S.isCPlusPlus()) 1702 return true; 1703 break; 1704 case IK_OpenCL: 1705 if (S.isOpenCL()) 1706 return true; 1707 break; 1708 case IK_CUDA: 1709 case IK_PreprocessedCuda: 1710 if (S.isCPlusPlus()) 1711 return true; 1712 break; 1713 default: 1714 // For other inputs, accept (and ignore) all -std= values. 1715 return true; 1716 } 1717 return false; 1718 } 1719 1720 /// Get language name for given input kind. 1721 static const StringRef GetInputKindName(InputKind IK) { 1722 switch (IK) { 1723 case IK_C: 1724 case IK_ObjC: 1725 case IK_PreprocessedC: 1726 case IK_PreprocessedObjC: 1727 return "C/ObjC"; 1728 case IK_CXX: 1729 case IK_ObjCXX: 1730 case IK_PreprocessedCXX: 1731 case IK_PreprocessedObjCXX: 1732 return "C++/ObjC++"; 1733 case IK_OpenCL: 1734 return "OpenCL"; 1735 case IK_CUDA: 1736 case IK_PreprocessedCuda: 1737 return "CUDA"; 1738 default: 1739 llvm_unreachable("Cannot decide on name for InputKind!"); 1740 } 1741 } 1742 1743 static void ParseLangArgs(LangOptions &Opts, ArgList &Args, InputKind IK, 1744 const TargetOptions &TargetOpts, 1745 PreprocessorOptions &PPOpts, 1746 DiagnosticsEngine &Diags) { 1747 // FIXME: Cleanup per-file based stuff. 1748 LangStandard::Kind LangStd = LangStandard::lang_unspecified; 1749 if (const Arg *A = Args.getLastArg(OPT_std_EQ)) { 1750 LangStd = llvm::StringSwitch<LangStandard::Kind>(A->getValue()) 1751 #define LANGSTANDARD(id, name, desc, features) \ 1752 .Case(name, LangStandard::lang_##id) 1753 #define LANGSTANDARD_ALIAS(id, alias) \ 1754 .Case(alias, LangStandard::lang_##id) 1755 #include "clang/Frontend/LangStandards.def" 1756 .Default(LangStandard::lang_unspecified); 1757 if (LangStd == LangStandard::lang_unspecified) { 1758 Diags.Report(diag::err_drv_invalid_value) 1759 << A->getAsString(Args) << A->getValue(); 1760 // Report supported standards with short description. 1761 for (unsigned KindValue = 0; 1762 KindValue != LangStandard::lang_unspecified; 1763 ++KindValue) { 1764 const LangStandard &Std = LangStandard::getLangStandardForKind( 1765 static_cast<LangStandard::Kind>(KindValue)); 1766 if (IsInputCompatibleWithStandard(IK, Std)) { 1767 Diags.Report(diag::note_drv_use_standard) 1768 << Std.getName() << Std.getDescription(); 1769 } 1770 } 1771 } else { 1772 // Valid standard, check to make sure language and standard are 1773 // compatible. 1774 const LangStandard &Std = LangStandard::getLangStandardForKind(LangStd); 1775 if (!IsInputCompatibleWithStandard(IK, Std)) { 1776 Diags.Report(diag::err_drv_argument_not_allowed_with) 1777 << A->getAsString(Args) << GetInputKindName(IK); 1778 } 1779 } 1780 } 1781 1782 // -cl-std only applies for OpenCL language standards. 1783 // Override the -std option in this case. 1784 if (const Arg *A = Args.getLastArg(OPT_cl_std_EQ)) { 1785 LangStandard::Kind OpenCLLangStd 1786 = llvm::StringSwitch<LangStandard::Kind>(A->getValue()) 1787 .Cases("cl", "CL", LangStandard::lang_opencl) 1788 .Cases("cl1.1", "CL1.1", LangStandard::lang_opencl11) 1789 .Cases("cl1.2", "CL1.2", LangStandard::lang_opencl12) 1790 .Cases("cl2.0", "CL2.0", LangStandard::lang_opencl20) 1791 .Default(LangStandard::lang_unspecified); 1792 1793 if (OpenCLLangStd == LangStandard::lang_unspecified) { 1794 Diags.Report(diag::err_drv_invalid_value) 1795 << A->getAsString(Args) << A->getValue(); 1796 } 1797 else 1798 LangStd = OpenCLLangStd; 1799 } 1800 1801 Opts.IncludeDefaultHeader = Args.hasArg(OPT_finclude_default_header); 1802 1803 llvm::Triple T(TargetOpts.Triple); 1804 CompilerInvocation::setLangDefaults(Opts, IK, T, PPOpts, LangStd); 1805 1806 // -cl-strict-aliasing needs to emit diagnostic in the case where CL > 1.0. 1807 // This option should be deprecated for CL > 1.0 because 1808 // this option was added for compatibility with OpenCL 1.0. 1809 if (Args.getLastArg(OPT_cl_strict_aliasing) 1810 && Opts.OpenCLVersion > 100) { 1811 std::string VerSpec = llvm::to_string(Opts.OpenCLVersion / 100) + 1812 std::string(".") + 1813 llvm::to_string((Opts.OpenCLVersion % 100) / 10); 1814 Diags.Report(diag::warn_option_invalid_ocl_version) 1815 << VerSpec << Args.getLastArg(OPT_cl_strict_aliasing)->getAsString(Args); 1816 } 1817 1818 // We abuse '-f[no-]gnu-keywords' to force overriding all GNU-extension 1819 // keywords. This behavior is provided by GCC's poorly named '-fasm' flag, 1820 // while a subset (the non-C++ GNU keywords) is provided by GCC's 1821 // '-fgnu-keywords'. Clang conflates the two for simplicity under the single 1822 // name, as it doesn't seem a useful distinction. 1823 Opts.GNUKeywords = Args.hasFlag(OPT_fgnu_keywords, OPT_fno_gnu_keywords, 1824 Opts.GNUKeywords); 1825 1826 if (Args.hasArg(OPT_fno_operator_names)) 1827 Opts.CXXOperatorNames = 0; 1828 1829 if (Args.hasArg(OPT_fcuda_is_device)) 1830 Opts.CUDAIsDevice = 1; 1831 1832 if (Args.hasArg(OPT_fcuda_allow_variadic_functions)) 1833 Opts.CUDAAllowVariadicFunctions = 1; 1834 1835 if (Args.hasArg(OPT_fno_cuda_host_device_constexpr)) 1836 Opts.CUDAHostDeviceConstexpr = 0; 1837 1838 if (Opts.CUDAIsDevice && Args.hasArg(OPT_fcuda_flush_denormals_to_zero)) 1839 Opts.CUDADeviceFlushDenormalsToZero = 1; 1840 1841 if (Opts.CUDAIsDevice && Args.hasArg(OPT_fcuda_approx_transcendentals)) 1842 Opts.CUDADeviceApproxTranscendentals = 1; 1843 1844 if (Opts.ObjC1) { 1845 if (Arg *arg = Args.getLastArg(OPT_fobjc_runtime_EQ)) { 1846 StringRef value = arg->getValue(); 1847 if (Opts.ObjCRuntime.tryParse(value)) 1848 Diags.Report(diag::err_drv_unknown_objc_runtime) << value; 1849 } 1850 1851 if (Args.hasArg(OPT_fobjc_gc_only)) 1852 Opts.setGC(LangOptions::GCOnly); 1853 else if (Args.hasArg(OPT_fobjc_gc)) 1854 Opts.setGC(LangOptions::HybridGC); 1855 else if (Args.hasArg(OPT_fobjc_arc)) { 1856 Opts.ObjCAutoRefCount = 1; 1857 if (!Opts.ObjCRuntime.allowsARC()) 1858 Diags.Report(diag::err_arc_unsupported_on_runtime); 1859 } 1860 1861 // ObjCWeakRuntime tracks whether the runtime supports __weak, not 1862 // whether the feature is actually enabled. This is predominantly 1863 // determined by -fobjc-runtime, but we allow it to be overridden 1864 // from the command line for testing purposes. 1865 if (Args.hasArg(OPT_fobjc_runtime_has_weak)) 1866 Opts.ObjCWeakRuntime = 1; 1867 else 1868 Opts.ObjCWeakRuntime = Opts.ObjCRuntime.allowsWeak(); 1869 1870 // ObjCWeak determines whether __weak is actually enabled. 1871 // Note that we allow -fno-objc-weak to disable this even in ARC mode. 1872 if (auto weakArg = Args.getLastArg(OPT_fobjc_weak, OPT_fno_objc_weak)) { 1873 if (!weakArg->getOption().matches(OPT_fobjc_weak)) { 1874 assert(!Opts.ObjCWeak); 1875 } else if (Opts.getGC() != LangOptions::NonGC) { 1876 Diags.Report(diag::err_objc_weak_with_gc); 1877 } else if (!Opts.ObjCWeakRuntime) { 1878 Diags.Report(diag::err_objc_weak_unsupported); 1879 } else { 1880 Opts.ObjCWeak = 1; 1881 } 1882 } else if (Opts.ObjCAutoRefCount) { 1883 Opts.ObjCWeak = Opts.ObjCWeakRuntime; 1884 } 1885 1886 if (Args.hasArg(OPT_fno_objc_infer_related_result_type)) 1887 Opts.ObjCInferRelatedResultType = 0; 1888 1889 if (Args.hasArg(OPT_fobjc_subscripting_legacy_runtime)) 1890 Opts.ObjCSubscriptingLegacyRuntime = 1891 (Opts.ObjCRuntime.getKind() == ObjCRuntime::FragileMacOSX); 1892 } 1893 1894 if (Args.hasArg(OPT_fgnu89_inline)) { 1895 if (Opts.CPlusPlus) 1896 Diags.Report(diag::err_drv_argument_not_allowed_with) 1897 << "-fgnu89-inline" << GetInputKindName(IK); 1898 else 1899 Opts.GNUInline = 1; 1900 } 1901 1902 if (Args.hasArg(OPT_fapple_kext)) { 1903 if (!Opts.CPlusPlus) 1904 Diags.Report(diag::warn_c_kext); 1905 else 1906 Opts.AppleKext = 1; 1907 } 1908 1909 if (Args.hasArg(OPT_print_ivar_layout)) 1910 Opts.ObjCGCBitmapPrint = 1; 1911 if (Args.hasArg(OPT_fno_constant_cfstrings)) 1912 Opts.NoConstantCFStrings = 1; 1913 1914 if (Args.hasArg(OPT_faltivec)) 1915 Opts.AltiVec = 1; 1916 1917 if (Args.hasArg(OPT_fzvector)) 1918 Opts.ZVector = 1; 1919 1920 if (Args.hasArg(OPT_pthread)) 1921 Opts.POSIXThreads = 1; 1922 1923 // The value-visibility mode defaults to "default". 1924 if (Arg *visOpt = Args.getLastArg(OPT_fvisibility)) { 1925 Opts.setValueVisibilityMode(parseVisibility(visOpt, Args, Diags)); 1926 } else { 1927 Opts.setValueVisibilityMode(DefaultVisibility); 1928 } 1929 1930 // The type-visibility mode defaults to the value-visibility mode. 1931 if (Arg *typeVisOpt = Args.getLastArg(OPT_ftype_visibility)) { 1932 Opts.setTypeVisibilityMode(parseVisibility(typeVisOpt, Args, Diags)); 1933 } else { 1934 Opts.setTypeVisibilityMode(Opts.getValueVisibilityMode()); 1935 } 1936 1937 if (Args.hasArg(OPT_fvisibility_inlines_hidden)) 1938 Opts.InlineVisibilityHidden = 1; 1939 1940 if (Args.hasArg(OPT_ftrapv)) { 1941 Opts.setSignedOverflowBehavior(LangOptions::SOB_Trapping); 1942 // Set the handler, if one is specified. 1943 Opts.OverflowHandler = 1944 Args.getLastArgValue(OPT_ftrapv_handler); 1945 } 1946 else if (Args.hasArg(OPT_fwrapv)) 1947 Opts.setSignedOverflowBehavior(LangOptions::SOB_Defined); 1948 1949 Opts.MSVCCompat = Args.hasArg(OPT_fms_compatibility); 1950 Opts.MicrosoftExt = Opts.MSVCCompat || Args.hasArg(OPT_fms_extensions); 1951 Opts.AsmBlocks = Args.hasArg(OPT_fasm_blocks) || Opts.MicrosoftExt; 1952 Opts.MSCompatibilityVersion = 0; 1953 if (const Arg *A = Args.getLastArg(OPT_fms_compatibility_version)) { 1954 VersionTuple VT; 1955 if (VT.tryParse(A->getValue())) 1956 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) 1957 << A->getValue(); 1958 Opts.MSCompatibilityVersion = VT.getMajor() * 10000000 + 1959 VT.getMinor().getValueOr(0) * 100000 + 1960 VT.getSubminor().getValueOr(0); 1961 } 1962 1963 // Mimicing gcc's behavior, trigraphs are only enabled if -trigraphs 1964 // is specified, or -std is set to a conforming mode. 1965 // Trigraphs are disabled by default in c++1z onwards. 1966 Opts.Trigraphs = !Opts.GNUMode && !Opts.MSVCCompat && !Opts.CPlusPlus1z; 1967 Opts.Trigraphs = 1968 Args.hasFlag(OPT_ftrigraphs, OPT_fno_trigraphs, Opts.Trigraphs); 1969 1970 Opts.DollarIdents = Args.hasFlag(OPT_fdollars_in_identifiers, 1971 OPT_fno_dollars_in_identifiers, 1972 Opts.DollarIdents); 1973 Opts.PascalStrings = Args.hasArg(OPT_fpascal_strings); 1974 Opts.VtorDispMode = getLastArgIntValue(Args, OPT_vtordisp_mode_EQ, 1, Diags); 1975 Opts.Borland = Args.hasArg(OPT_fborland_extensions); 1976 Opts.WritableStrings = Args.hasArg(OPT_fwritable_strings); 1977 Opts.ConstStrings = Args.hasFlag(OPT_fconst_strings, OPT_fno_const_strings, 1978 Opts.ConstStrings); 1979 if (Args.hasArg(OPT_fno_lax_vector_conversions)) 1980 Opts.LaxVectorConversions = 0; 1981 if (Args.hasArg(OPT_fno_threadsafe_statics)) 1982 Opts.ThreadsafeStatics = 0; 1983 Opts.Exceptions = Args.hasArg(OPT_fexceptions); 1984 Opts.ObjCExceptions = Args.hasArg(OPT_fobjc_exceptions); 1985 Opts.CXXExceptions = Args.hasArg(OPT_fcxx_exceptions); 1986 Opts.SjLjExceptions = Args.hasArg(OPT_fsjlj_exceptions); 1987 Opts.ExternCNoUnwind = Args.hasArg(OPT_fexternc_nounwind); 1988 Opts.TraditionalCPP = Args.hasArg(OPT_traditional_cpp); 1989 1990 Opts.RTTI = Opts.CPlusPlus && !Args.hasArg(OPT_fno_rtti); 1991 Opts.RTTIData = Opts.RTTI && !Args.hasArg(OPT_fno_rtti_data); 1992 Opts.Blocks = Args.hasArg(OPT_fblocks) || (Opts.OpenCL 1993 && Opts.OpenCLVersion >= 200); 1994 Opts.BlocksRuntimeOptional = Args.hasArg(OPT_fblocks_runtime_optional); 1995 Opts.CoroutinesTS = Args.hasArg(OPT_fcoroutines_ts); 1996 Opts.ModulesTS = Args.hasArg(OPT_fmodules_ts); 1997 Opts.Modules = Args.hasArg(OPT_fmodules) || Opts.ModulesTS; 1998 Opts.ModulesStrictDeclUse = Args.hasArg(OPT_fmodules_strict_decluse); 1999 Opts.ModulesDeclUse = 2000 Args.hasArg(OPT_fmodules_decluse) || Opts.ModulesStrictDeclUse; 2001 Opts.ModulesLocalVisibility = 2002 Args.hasArg(OPT_fmodules_local_submodule_visibility) || Opts.ModulesTS; 2003 Opts.ModularCodegen = Args.hasArg(OPT_fmodule_codegen); 2004 Opts.ModulesSearchAll = Opts.Modules && 2005 !Args.hasArg(OPT_fno_modules_search_all) && 2006 Args.hasArg(OPT_fmodules_search_all); 2007 Opts.ModulesErrorRecovery = !Args.hasArg(OPT_fno_modules_error_recovery); 2008 Opts.ImplicitModules = !Args.hasArg(OPT_fno_implicit_modules); 2009 Opts.CharIsSigned = Opts.OpenCL || !Args.hasArg(OPT_fno_signed_char); 2010 Opts.WChar = Opts.CPlusPlus && !Args.hasArg(OPT_fno_wchar); 2011 Opts.ShortWChar = Args.hasFlag(OPT_fshort_wchar, OPT_fno_short_wchar, false); 2012 Opts.ShortEnums = Args.hasArg(OPT_fshort_enums); 2013 Opts.Freestanding = Args.hasArg(OPT_ffreestanding); 2014 Opts.NoBuiltin = Args.hasArg(OPT_fno_builtin) || Opts.Freestanding; 2015 if (!Opts.NoBuiltin) 2016 getAllNoBuiltinFuncValues(Args, Opts.NoBuiltinFuncs); 2017 Opts.NoMathBuiltin = Args.hasArg(OPT_fno_math_builtin); 2018 Opts.RelaxedTemplateTemplateArgs = 2019 Args.hasArg(OPT_frelaxed_template_template_args); 2020 Opts.SizedDeallocation = Args.hasArg(OPT_fsized_deallocation); 2021 Opts.AlignedAllocation = 2022 Args.hasFlag(OPT_faligned_allocation, OPT_fno_aligned_allocation, 2023 Opts.AlignedAllocation); 2024 Opts.NewAlignOverride = 2025 getLastArgIntValue(Args, OPT_fnew_alignment_EQ, 0, Diags); 2026 if (Opts.NewAlignOverride && !llvm::isPowerOf2_32(Opts.NewAlignOverride)) { 2027 Arg *A = Args.getLastArg(OPT_fnew_alignment_EQ); 2028 Diags.Report(diag::err_fe_invalid_alignment) << A->getAsString(Args) 2029 << A->getValue(); 2030 Opts.NewAlignOverride = 0; 2031 } 2032 Opts.ConceptsTS = Args.hasArg(OPT_fconcepts_ts); 2033 Opts.HeinousExtensions = Args.hasArg(OPT_fheinous_gnu_extensions); 2034 Opts.AccessControl = !Args.hasArg(OPT_fno_access_control); 2035 Opts.ElideConstructors = !Args.hasArg(OPT_fno_elide_constructors); 2036 Opts.MathErrno = !Opts.OpenCL && Args.hasArg(OPT_fmath_errno); 2037 Opts.InstantiationDepth = 2038 getLastArgIntValue(Args, OPT_ftemplate_depth, 1024, Diags); 2039 Opts.ArrowDepth = 2040 getLastArgIntValue(Args, OPT_foperator_arrow_depth, 256, Diags); 2041 Opts.ConstexprCallDepth = 2042 getLastArgIntValue(Args, OPT_fconstexpr_depth, 512, Diags); 2043 Opts.ConstexprStepLimit = 2044 getLastArgIntValue(Args, OPT_fconstexpr_steps, 1048576, Diags); 2045 Opts.BracketDepth = getLastArgIntValue(Args, OPT_fbracket_depth, 256, Diags); 2046 Opts.DelayedTemplateParsing = Args.hasArg(OPT_fdelayed_template_parsing); 2047 Opts.NumLargeByValueCopy = 2048 getLastArgIntValue(Args, OPT_Wlarge_by_value_copy_EQ, 0, Diags); 2049 Opts.MSBitfields = Args.hasArg(OPT_mms_bitfields); 2050 Opts.ObjCConstantStringClass = 2051 Args.getLastArgValue(OPT_fconstant_string_class); 2052 Opts.ObjCDefaultSynthProperties = 2053 !Args.hasArg(OPT_disable_objc_default_synthesize_properties); 2054 Opts.EncodeExtendedBlockSig = 2055 Args.hasArg(OPT_fencode_extended_block_signature); 2056 Opts.EmitAllDecls = Args.hasArg(OPT_femit_all_decls); 2057 Opts.PackStruct = getLastArgIntValue(Args, OPT_fpack_struct_EQ, 0, Diags); 2058 Opts.MaxTypeAlign = getLastArgIntValue(Args, OPT_fmax_type_align_EQ, 0, Diags); 2059 Opts.AlignDouble = Args.hasArg(OPT_malign_double); 2060 Opts.PICLevel = getLastArgIntValue(Args, OPT_pic_level, 0, Diags); 2061 Opts.PIE = Args.hasArg(OPT_pic_is_pie); 2062 Opts.Static = Args.hasArg(OPT_static_define); 2063 Opts.DumpRecordLayoutsSimple = Args.hasArg(OPT_fdump_record_layouts_simple); 2064 Opts.DumpRecordLayouts = Opts.DumpRecordLayoutsSimple 2065 || Args.hasArg(OPT_fdump_record_layouts); 2066 Opts.DumpVTableLayouts = Args.hasArg(OPT_fdump_vtable_layouts); 2067 Opts.SpellChecking = !Args.hasArg(OPT_fno_spell_checking); 2068 Opts.NoBitFieldTypeAlign = Args.hasArg(OPT_fno_bitfield_type_align); 2069 Opts.SinglePrecisionConstants = Args.hasArg(OPT_cl_single_precision_constant); 2070 Opts.FastRelaxedMath = Args.hasArg(OPT_cl_fast_relaxed_math); 2071 Opts.HexagonQdsp6Compat = Args.hasArg(OPT_mqdsp6_compat); 2072 Opts.FakeAddressSpaceMap = Args.hasArg(OPT_ffake_address_space_map); 2073 Opts.ParseUnknownAnytype = Args.hasArg(OPT_funknown_anytype); 2074 Opts.DebuggerSupport = Args.hasArg(OPT_fdebugger_support); 2075 Opts.DebuggerCastResultToId = Args.hasArg(OPT_fdebugger_cast_result_to_id); 2076 Opts.DebuggerObjCLiteral = Args.hasArg(OPT_fdebugger_objc_literal); 2077 Opts.ApplePragmaPack = Args.hasArg(OPT_fapple_pragma_pack); 2078 Opts.CurrentModule = Args.getLastArgValue(OPT_fmodule_name_EQ); 2079 Opts.AppExt = Args.hasArg(OPT_fapplication_extension); 2080 Opts.ModuleFeatures = Args.getAllArgValues(OPT_fmodule_feature); 2081 std::sort(Opts.ModuleFeatures.begin(), Opts.ModuleFeatures.end()); 2082 Opts.NativeHalfType |= Args.hasArg(OPT_fnative_half_type); 2083 Opts.NativeHalfArgsAndReturns |= Args.hasArg(OPT_fnative_half_arguments_and_returns); 2084 // Enable HalfArgsAndReturns if present in Args or if NativeHalfArgsAndReturns 2085 // is enabled. 2086 Opts.HalfArgsAndReturns = Args.hasArg(OPT_fallow_half_arguments_and_returns) 2087 | Opts.NativeHalfArgsAndReturns; 2088 Opts.GNUAsm = !Args.hasArg(OPT_fno_gnu_inline_asm); 2089 2090 // __declspec is enabled by default for the PS4 by the driver, and also 2091 // enabled for Microsoft Extensions or Borland Extensions, here. 2092 // 2093 // FIXME: __declspec is also currently enabled for CUDA, but isn't really a 2094 // CUDA extension. However, it is required for supporting 2095 // __clang_cuda_builtin_vars.h, which uses __declspec(property). Once that has 2096 // been rewritten in terms of something more generic, remove the Opts.CUDA 2097 // term here. 2098 Opts.DeclSpecKeyword = 2099 Args.hasFlag(OPT_fdeclspec, OPT_fno_declspec, 2100 (Opts.MicrosoftExt || Opts.Borland || Opts.CUDA)); 2101 2102 // For now, we only support local submodule visibility in C++ (because we 2103 // heavily depend on the ODR for merging redefinitions). 2104 if (Opts.ModulesLocalVisibility && !Opts.CPlusPlus) 2105 Diags.Report(diag::err_drv_argument_not_allowed_with) 2106 << "-fmodules-local-submodule-visibility" << "C"; 2107 2108 if (Arg *A = Args.getLastArg(OPT_faddress_space_map_mangling_EQ)) { 2109 switch (llvm::StringSwitch<unsigned>(A->getValue()) 2110 .Case("target", LangOptions::ASMM_Target) 2111 .Case("no", LangOptions::ASMM_Off) 2112 .Case("yes", LangOptions::ASMM_On) 2113 .Default(255)) { 2114 default: 2115 Diags.Report(diag::err_drv_invalid_value) 2116 << "-faddress-space-map-mangling=" << A->getValue(); 2117 break; 2118 case LangOptions::ASMM_Target: 2119 Opts.setAddressSpaceMapMangling(LangOptions::ASMM_Target); 2120 break; 2121 case LangOptions::ASMM_On: 2122 Opts.setAddressSpaceMapMangling(LangOptions::ASMM_On); 2123 break; 2124 case LangOptions::ASMM_Off: 2125 Opts.setAddressSpaceMapMangling(LangOptions::ASMM_Off); 2126 break; 2127 } 2128 } 2129 2130 if (Arg *A = Args.getLastArg(OPT_fms_memptr_rep_EQ)) { 2131 LangOptions::PragmaMSPointersToMembersKind InheritanceModel = 2132 llvm::StringSwitch<LangOptions::PragmaMSPointersToMembersKind>( 2133 A->getValue()) 2134 .Case("single", 2135 LangOptions::PPTMK_FullGeneralitySingleInheritance) 2136 .Case("multiple", 2137 LangOptions::PPTMK_FullGeneralityMultipleInheritance) 2138 .Case("virtual", 2139 LangOptions::PPTMK_FullGeneralityVirtualInheritance) 2140 .Default(LangOptions::PPTMK_BestCase); 2141 if (InheritanceModel == LangOptions::PPTMK_BestCase) 2142 Diags.Report(diag::err_drv_invalid_value) 2143 << "-fms-memptr-rep=" << A->getValue(); 2144 2145 Opts.setMSPointerToMemberRepresentationMethod(InheritanceModel); 2146 } 2147 2148 // Check for MS default calling conventions being specified. 2149 if (Arg *A = Args.getLastArg(OPT_fdefault_calling_conv_EQ)) { 2150 LangOptions::DefaultCallingConvention DefaultCC = 2151 llvm::StringSwitch<LangOptions::DefaultCallingConvention>( 2152 A->getValue()) 2153 .Case("cdecl", LangOptions::DCC_CDecl) 2154 .Case("fastcall", LangOptions::DCC_FastCall) 2155 .Case("stdcall", LangOptions::DCC_StdCall) 2156 .Case("vectorcall", LangOptions::DCC_VectorCall) 2157 .Default(LangOptions::DCC_None); 2158 if (DefaultCC == LangOptions::DCC_None) 2159 Diags.Report(diag::err_drv_invalid_value) 2160 << "-fdefault-calling-conv=" << A->getValue(); 2161 2162 llvm::Triple T(TargetOpts.Triple); 2163 llvm::Triple::ArchType Arch = T.getArch(); 2164 bool emitError = (DefaultCC == LangOptions::DCC_FastCall || 2165 DefaultCC == LangOptions::DCC_StdCall) && 2166 Arch != llvm::Triple::x86; 2167 emitError |= DefaultCC == LangOptions::DCC_VectorCall && 2168 !(Arch == llvm::Triple::x86 || Arch == llvm::Triple::x86_64); 2169 if (emitError) 2170 Diags.Report(diag::err_drv_argument_not_allowed_with) 2171 << A->getSpelling() << T.getTriple(); 2172 else 2173 Opts.setDefaultCallingConv(DefaultCC); 2174 } 2175 2176 // -mrtd option 2177 if (Arg *A = Args.getLastArg(OPT_mrtd)) { 2178 if (Opts.getDefaultCallingConv() != LangOptions::DCC_None) 2179 Diags.Report(diag::err_drv_argument_not_allowed_with) 2180 << A->getSpelling() << "-fdefault-calling-conv"; 2181 else { 2182 llvm::Triple T(TargetOpts.Triple); 2183 if (T.getArch() != llvm::Triple::x86) 2184 Diags.Report(diag::err_drv_argument_not_allowed_with) 2185 << A->getSpelling() << T.getTriple(); 2186 else 2187 Opts.setDefaultCallingConv(LangOptions::DCC_StdCall); 2188 } 2189 } 2190 2191 // Check if -fopenmp is specified. 2192 Opts.OpenMP = Args.hasArg(options::OPT_fopenmp) ? 1 : 0; 2193 Opts.OpenMPUseTLS = 2194 Opts.OpenMP && !Args.hasArg(options::OPT_fnoopenmp_use_tls); 2195 Opts.OpenMPIsDevice = 2196 Opts.OpenMP && Args.hasArg(options::OPT_fopenmp_is_device); 2197 2198 if (Opts.OpenMP) { 2199 int Version = 2200 getLastArgIntValue(Args, OPT_fopenmp_version_EQ, Opts.OpenMP, Diags); 2201 if (Version != 0) 2202 Opts.OpenMP = Version; 2203 // Provide diagnostic when a given target is not expected to be an OpenMP 2204 // device or host. 2205 if (!Opts.OpenMPIsDevice) { 2206 switch (T.getArch()) { 2207 default: 2208 break; 2209 // Add unsupported host targets here: 2210 case llvm::Triple::nvptx: 2211 case llvm::Triple::nvptx64: 2212 Diags.Report(clang::diag::err_drv_omp_host_target_not_supported) 2213 << TargetOpts.Triple; 2214 break; 2215 } 2216 } 2217 } 2218 2219 // Get the OpenMP target triples if any. 2220 if (Arg *A = Args.getLastArg(options::OPT_fopenmp_targets_EQ)) { 2221 2222 for (unsigned i = 0; i < A->getNumValues(); ++i) { 2223 llvm::Triple TT(A->getValue(i)); 2224 2225 if (TT.getArch() == llvm::Triple::UnknownArch) 2226 Diags.Report(clang::diag::err_drv_invalid_omp_target) << A->getValue(i); 2227 else 2228 Opts.OMPTargetTriples.push_back(TT); 2229 } 2230 } 2231 2232 // Get OpenMP host file path if any and report if a non existent file is 2233 // found 2234 if (Arg *A = Args.getLastArg(options::OPT_fopenmp_host_ir_file_path)) { 2235 Opts.OMPHostIRFile = A->getValue(); 2236 if (!llvm::sys::fs::exists(Opts.OMPHostIRFile)) 2237 Diags.Report(clang::diag::err_drv_omp_host_ir_file_not_found) 2238 << Opts.OMPHostIRFile; 2239 } 2240 2241 // Record whether the __DEPRECATED define was requested. 2242 Opts.Deprecated = Args.hasFlag(OPT_fdeprecated_macro, 2243 OPT_fno_deprecated_macro, 2244 Opts.Deprecated); 2245 2246 // FIXME: Eliminate this dependency. 2247 unsigned Opt = getOptimizationLevel(Args, IK, Diags), 2248 OptSize = getOptimizationLevelSize(Args); 2249 Opts.Optimize = Opt != 0; 2250 Opts.OptimizeSize = OptSize != 0; 2251 2252 // This is the __NO_INLINE__ define, which just depends on things like the 2253 // optimization level and -fno-inline, not actually whether the backend has 2254 // inlining enabled. 2255 Opts.NoInlineDefine = !Opts.Optimize; 2256 if (Arg *InlineArg = Args.getLastArg( 2257 options::OPT_finline_functions, options::OPT_finline_hint_functions, 2258 options::OPT_fno_inline_functions, options::OPT_fno_inline)) 2259 if (InlineArg->getOption().matches(options::OPT_fno_inline)) 2260 Opts.NoInlineDefine = true; 2261 2262 Opts.FastMath = Args.hasArg(OPT_ffast_math) || 2263 Args.hasArg(OPT_cl_fast_relaxed_math); 2264 Opts.FiniteMathOnly = Args.hasArg(OPT_ffinite_math_only) || 2265 Args.hasArg(OPT_cl_finite_math_only) || 2266 Args.hasArg(OPT_cl_fast_relaxed_math); 2267 Opts.UnsafeFPMath = Args.hasArg(OPT_menable_unsafe_fp_math) || 2268 Args.hasArg(OPT_cl_unsafe_math_optimizations) || 2269 Args.hasArg(OPT_cl_fast_relaxed_math); 2270 2271 Opts.RetainCommentsFromSystemHeaders = 2272 Args.hasArg(OPT_fretain_comments_from_system_headers); 2273 2274 unsigned SSP = getLastArgIntValue(Args, OPT_stack_protector, 0, Diags); 2275 switch (SSP) { 2276 default: 2277 Diags.Report(diag::err_drv_invalid_value) 2278 << Args.getLastArg(OPT_stack_protector)->getAsString(Args) << SSP; 2279 break; 2280 case 0: Opts.setStackProtector(LangOptions::SSPOff); break; 2281 case 1: Opts.setStackProtector(LangOptions::SSPOn); break; 2282 case 2: Opts.setStackProtector(LangOptions::SSPStrong); break; 2283 case 3: Opts.setStackProtector(LangOptions::SSPReq); break; 2284 } 2285 2286 // Parse -fsanitize= arguments. 2287 parseSanitizerKinds("-fsanitize=", Args.getAllArgValues(OPT_fsanitize_EQ), 2288 Diags, Opts.Sanitize); 2289 // -fsanitize-address-field-padding=N has to be a LangOpt, parse it here. 2290 Opts.SanitizeAddressFieldPadding = 2291 getLastArgIntValue(Args, OPT_fsanitize_address_field_padding, 0, Diags); 2292 Opts.SanitizerBlacklistFiles = Args.getAllArgValues(OPT_fsanitize_blacklist); 2293 } 2294 2295 static void ParsePreprocessorArgs(PreprocessorOptions &Opts, ArgList &Args, 2296 FileManager &FileMgr, 2297 DiagnosticsEngine &Diags) { 2298 using namespace options; 2299 Opts.ImplicitPCHInclude = Args.getLastArgValue(OPT_include_pch); 2300 Opts.ImplicitPTHInclude = Args.getLastArgValue(OPT_include_pth); 2301 if (const Arg *A = Args.getLastArg(OPT_token_cache)) 2302 Opts.TokenCache = A->getValue(); 2303 else 2304 Opts.TokenCache = Opts.ImplicitPTHInclude; 2305 Opts.UsePredefines = !Args.hasArg(OPT_undef); 2306 Opts.DetailedRecord = Args.hasArg(OPT_detailed_preprocessing_record); 2307 Opts.DisablePCHValidation = Args.hasArg(OPT_fno_validate_pch); 2308 Opts.AllowPCHWithCompilerErrors = Args.hasArg(OPT_fallow_pch_with_errors); 2309 2310 Opts.DumpDeserializedPCHDecls = Args.hasArg(OPT_dump_deserialized_pch_decls); 2311 for (const Arg *A : Args.filtered(OPT_error_on_deserialized_pch_decl)) 2312 Opts.DeserializedPCHDeclsToErrorOn.insert(A->getValue()); 2313 2314 if (const Arg *A = Args.getLastArg(OPT_preamble_bytes_EQ)) { 2315 StringRef Value(A->getValue()); 2316 size_t Comma = Value.find(','); 2317 unsigned Bytes = 0; 2318 unsigned EndOfLine = 0; 2319 2320 if (Comma == StringRef::npos || 2321 Value.substr(0, Comma).getAsInteger(10, Bytes) || 2322 Value.substr(Comma + 1).getAsInteger(10, EndOfLine)) 2323 Diags.Report(diag::err_drv_preamble_format); 2324 else { 2325 Opts.PrecompiledPreambleBytes.first = Bytes; 2326 Opts.PrecompiledPreambleBytes.second = (EndOfLine != 0); 2327 } 2328 } 2329 2330 // Add macros from the command line. 2331 for (const Arg *A : Args.filtered(OPT_D, OPT_U)) { 2332 if (A->getOption().matches(OPT_D)) 2333 Opts.addMacroDef(A->getValue()); 2334 else 2335 Opts.addMacroUndef(A->getValue()); 2336 } 2337 2338 Opts.MacroIncludes = Args.getAllArgValues(OPT_imacros); 2339 2340 // Add the ordered list of -includes. 2341 for (const Arg *A : Args.filtered(OPT_include)) 2342 Opts.Includes.emplace_back(A->getValue()); 2343 2344 for (const Arg *A : Args.filtered(OPT_chain_include)) 2345 Opts.ChainedIncludes.emplace_back(A->getValue()); 2346 2347 for (const Arg *A : Args.filtered(OPT_remap_file)) { 2348 std::pair<StringRef, StringRef> Split = StringRef(A->getValue()).split(';'); 2349 2350 if (Split.second.empty()) { 2351 Diags.Report(diag::err_drv_invalid_remap_file) << A->getAsString(Args); 2352 continue; 2353 } 2354 2355 Opts.addRemappedFile(Split.first, Split.second); 2356 } 2357 2358 if (Arg *A = Args.getLastArg(OPT_fobjc_arc_cxxlib_EQ)) { 2359 StringRef Name = A->getValue(); 2360 unsigned Library = llvm::StringSwitch<unsigned>(Name) 2361 .Case("libc++", ARCXX_libcxx) 2362 .Case("libstdc++", ARCXX_libstdcxx) 2363 .Case("none", ARCXX_nolib) 2364 .Default(~0U); 2365 if (Library == ~0U) 2366 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Name; 2367 else 2368 Opts.ObjCXXARCStandardLibrary = (ObjCXXARCStandardLibraryKind)Library; 2369 } 2370 } 2371 2372 static void ParsePreprocessorOutputArgs(PreprocessorOutputOptions &Opts, 2373 ArgList &Args, 2374 frontend::ActionKind Action) { 2375 using namespace options; 2376 2377 switch (Action) { 2378 case frontend::ASTDeclList: 2379 case frontend::ASTDump: 2380 case frontend::ASTPrint: 2381 case frontend::ASTView: 2382 case frontend::EmitAssembly: 2383 case frontend::EmitBC: 2384 case frontend::EmitHTML: 2385 case frontend::EmitLLVM: 2386 case frontend::EmitLLVMOnly: 2387 case frontend::EmitCodeGenOnly: 2388 case frontend::EmitObj: 2389 case frontend::FixIt: 2390 case frontend::GenerateModule: 2391 case frontend::GenerateModuleInterface: 2392 case frontend::GeneratePCH: 2393 case frontend::GeneratePTH: 2394 case frontend::ParseSyntaxOnly: 2395 case frontend::ModuleFileInfo: 2396 case frontend::VerifyPCH: 2397 case frontend::PluginAction: 2398 case frontend::PrintDeclContext: 2399 case frontend::RewriteObjC: 2400 case frontend::RewriteTest: 2401 case frontend::RunAnalysis: 2402 case frontend::MigrateSource: 2403 Opts.ShowCPP = 0; 2404 break; 2405 2406 case frontend::DumpRawTokens: 2407 case frontend::DumpTokens: 2408 case frontend::InitOnly: 2409 case frontend::PrintPreamble: 2410 case frontend::PrintPreprocessedInput: 2411 case frontend::RewriteMacros: 2412 case frontend::RunPreprocessorOnly: 2413 Opts.ShowCPP = !Args.hasArg(OPT_dM); 2414 break; 2415 } 2416 2417 Opts.ShowComments = Args.hasArg(OPT_C); 2418 Opts.ShowLineMarkers = !Args.hasArg(OPT_P); 2419 Opts.ShowMacroComments = Args.hasArg(OPT_CC); 2420 Opts.ShowMacros = Args.hasArg(OPT_dM) || Args.hasArg(OPT_dD); 2421 Opts.ShowIncludeDirectives = Args.hasArg(OPT_dI); 2422 Opts.RewriteIncludes = Args.hasArg(OPT_frewrite_includes); 2423 Opts.UseLineDirectives = Args.hasArg(OPT_fuse_line_directives); 2424 } 2425 2426 static void ParseTargetArgs(TargetOptions &Opts, ArgList &Args, 2427 DiagnosticsEngine &Diags) { 2428 using namespace options; 2429 Opts.ABI = Args.getLastArgValue(OPT_target_abi); 2430 if (Arg *A = Args.getLastArg(OPT_meabi)) { 2431 StringRef Value = A->getValue(); 2432 llvm::EABI EABIVersion = llvm::StringSwitch<llvm::EABI>(Value) 2433 .Case("default", llvm::EABI::Default) 2434 .Case("4", llvm::EABI::EABI4) 2435 .Case("5", llvm::EABI::EABI5) 2436 .Case("gnu", llvm::EABI::GNU) 2437 .Default(llvm::EABI::Unknown); 2438 if (EABIVersion == llvm::EABI::Unknown) 2439 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) 2440 << Value; 2441 else 2442 Opts.EABIVersion = Value; 2443 } 2444 Opts.CPU = Args.getLastArgValue(OPT_target_cpu); 2445 Opts.FPMath = Args.getLastArgValue(OPT_mfpmath); 2446 Opts.FeaturesAsWritten = Args.getAllArgValues(OPT_target_feature); 2447 Opts.LinkerVersion = Args.getLastArgValue(OPT_target_linker_version); 2448 Opts.Triple = llvm::Triple::normalize(Args.getLastArgValue(OPT_triple)); 2449 Opts.Reciprocals = Args.getAllArgValues(OPT_mrecip_EQ); 2450 // Use the default target triple if unspecified. 2451 if (Opts.Triple.empty()) 2452 Opts.Triple = llvm::sys::getDefaultTargetTriple(); 2453 Opts.OpenCLExtensionsAsWritten = Args.getAllArgValues(OPT_cl_ext_EQ); 2454 } 2455 2456 bool CompilerInvocation::CreateFromArgs(CompilerInvocation &Res, 2457 const char *const *ArgBegin, 2458 const char *const *ArgEnd, 2459 DiagnosticsEngine &Diags) { 2460 bool Success = true; 2461 2462 // Parse the arguments. 2463 std::unique_ptr<OptTable> Opts = createDriverOptTable(); 2464 const unsigned IncludedFlagsBitmask = options::CC1Option; 2465 unsigned MissingArgIndex, MissingArgCount; 2466 InputArgList Args = 2467 Opts->ParseArgs(llvm::makeArrayRef(ArgBegin, ArgEnd), MissingArgIndex, 2468 MissingArgCount, IncludedFlagsBitmask); 2469 LangOptions &LangOpts = *Res.getLangOpts(); 2470 2471 // Check for missing argument error. 2472 if (MissingArgCount) { 2473 Diags.Report(diag::err_drv_missing_argument) 2474 << Args.getArgString(MissingArgIndex) << MissingArgCount; 2475 Success = false; 2476 } 2477 2478 // Issue errors on unknown arguments. 2479 for (const Arg *A : Args.filtered(OPT_UNKNOWN)) { 2480 Diags.Report(diag::err_drv_unknown_argument) << A->getAsString(Args); 2481 Success = false; 2482 } 2483 2484 Success &= ParseAnalyzerArgs(*Res.getAnalyzerOpts(), Args, Diags); 2485 Success &= ParseMigratorArgs(Res.getMigratorOpts(), Args); 2486 ParseDependencyOutputArgs(Res.getDependencyOutputOpts(), Args); 2487 Success &= 2488 ParseDiagnosticArgs(Res.getDiagnosticOpts(), Args, &Diags, 2489 false /*DefaultDiagColor*/, false /*DefaultShowOpt*/); 2490 ParseCommentArgs(LangOpts.CommentOpts, Args); 2491 ParseFileSystemArgs(Res.getFileSystemOpts(), Args); 2492 // FIXME: We shouldn't have to pass the DashX option around here 2493 InputKind DashX = ParseFrontendArgs(Res.getFrontendOpts(), Args, Diags, 2494 LangOpts.IsHeaderFile); 2495 ParseTargetArgs(Res.getTargetOpts(), Args, Diags); 2496 Success &= ParseCodeGenArgs(Res.getCodeGenOpts(), Args, DashX, Diags, 2497 Res.getTargetOpts()); 2498 ParseHeaderSearchArgs(Res.getHeaderSearchOpts(), Args); 2499 if (DashX == IK_AST || DashX == IK_LLVM_IR) { 2500 // ObjCAAutoRefCount and Sanitize LangOpts are used to setup the 2501 // PassManager in BackendUtil.cpp. They need to be initializd no matter 2502 // what the input type is. 2503 if (Args.hasArg(OPT_fobjc_arc)) 2504 LangOpts.ObjCAutoRefCount = 1; 2505 // PIClevel and PIELevel are needed during code generation and this should be 2506 // set regardless of the input type. 2507 LangOpts.PICLevel = getLastArgIntValue(Args, OPT_pic_level, 0, Diags); 2508 LangOpts.PIE = Args.hasArg(OPT_pic_is_pie); 2509 parseSanitizerKinds("-fsanitize=", Args.getAllArgValues(OPT_fsanitize_EQ), 2510 Diags, LangOpts.Sanitize); 2511 } else { 2512 // Other LangOpts are only initialzed when the input is not AST or LLVM IR. 2513 ParseLangArgs(LangOpts, Args, DashX, Res.getTargetOpts(), 2514 Res.getPreprocessorOpts(), Diags); 2515 if (Res.getFrontendOpts().ProgramAction == frontend::RewriteObjC) 2516 LangOpts.ObjCExceptions = 1; 2517 } 2518 2519 if (LangOpts.CUDA) { 2520 // During CUDA device-side compilation, the aux triple is the 2521 // triple used for host compilation. 2522 if (LangOpts.CUDAIsDevice) 2523 Res.getTargetOpts().HostTriple = Res.getFrontendOpts().AuxTriple; 2524 2525 // Set default FP_CONTRACT to FAST. 2526 if (!Args.hasArg(OPT_ffp_contract)) 2527 Res.getCodeGenOpts().setFPContractMode(CodeGenOptions::FPC_Fast); 2528 } 2529 2530 // FIXME: Override value name discarding when asan or msan is used because the 2531 // backend passes depend on the name of the alloca in order to print out 2532 // names. 2533 Res.getCodeGenOpts().DiscardValueNames &= 2534 !LangOpts.Sanitize.has(SanitizerKind::Address) && 2535 !LangOpts.Sanitize.has(SanitizerKind::Memory); 2536 2537 // FIXME: ParsePreprocessorArgs uses the FileManager to read the contents of 2538 // PCH file and find the original header name. Remove the need to do that in 2539 // ParsePreprocessorArgs and remove the FileManager 2540 // parameters from the function and the "FileManager.h" #include. 2541 FileManager FileMgr(Res.getFileSystemOpts()); 2542 ParsePreprocessorArgs(Res.getPreprocessorOpts(), Args, FileMgr, Diags); 2543 ParsePreprocessorOutputArgs(Res.getPreprocessorOutputOpts(), Args, 2544 Res.getFrontendOpts().ProgramAction); 2545 2546 // Turn on -Wspir-compat for SPIR target. 2547 llvm::Triple T(Res.getTargetOpts().Triple); 2548 auto Arch = T.getArch(); 2549 if (Arch == llvm::Triple::spir || Arch == llvm::Triple::spir64) { 2550 Res.getDiagnosticOpts().Warnings.push_back("spir-compat"); 2551 } 2552 return Success; 2553 } 2554 2555 std::string CompilerInvocation::getModuleHash() const { 2556 // Note: For QoI reasons, the things we use as a hash here should all be 2557 // dumped via the -module-info flag. 2558 using llvm::hash_code; 2559 using llvm::hash_value; 2560 using llvm::hash_combine; 2561 2562 // Start the signature with the compiler version. 2563 // FIXME: We'd rather use something more cryptographically sound than 2564 // CityHash, but this will do for now. 2565 hash_code code = hash_value(getClangFullRepositoryVersion()); 2566 2567 // Extend the signature with the language options 2568 #define LANGOPT(Name, Bits, Default, Description) \ 2569 code = hash_combine(code, LangOpts->Name); 2570 #define ENUM_LANGOPT(Name, Type, Bits, Default, Description) \ 2571 code = hash_combine(code, static_cast<unsigned>(LangOpts->get##Name())); 2572 #define BENIGN_LANGOPT(Name, Bits, Default, Description) 2573 #define BENIGN_ENUM_LANGOPT(Name, Type, Bits, Default, Description) 2574 #include "clang/Basic/LangOptions.def" 2575 2576 for (StringRef Feature : LangOpts->ModuleFeatures) 2577 code = hash_combine(code, Feature); 2578 2579 // Extend the signature with the target options. 2580 code = hash_combine(code, TargetOpts->Triple, TargetOpts->CPU, 2581 TargetOpts->ABI); 2582 for (unsigned i = 0, n = TargetOpts->FeaturesAsWritten.size(); i != n; ++i) 2583 code = hash_combine(code, TargetOpts->FeaturesAsWritten[i]); 2584 2585 // Extend the signature with preprocessor options. 2586 const PreprocessorOptions &ppOpts = getPreprocessorOpts(); 2587 const HeaderSearchOptions &hsOpts = getHeaderSearchOpts(); 2588 code = hash_combine(code, ppOpts.UsePredefines, ppOpts.DetailedRecord); 2589 2590 for (std::vector<std::pair<std::string, bool/*isUndef*/>>::const_iterator 2591 I = getPreprocessorOpts().Macros.begin(), 2592 IEnd = getPreprocessorOpts().Macros.end(); 2593 I != IEnd; ++I) { 2594 // If we're supposed to ignore this macro for the purposes of modules, 2595 // don't put it into the hash. 2596 if (!hsOpts.ModulesIgnoreMacros.empty()) { 2597 // Check whether we're ignoring this macro. 2598 StringRef MacroDef = I->first; 2599 if (hsOpts.ModulesIgnoreMacros.count( 2600 llvm::CachedHashString(MacroDef.split('=').first))) 2601 continue; 2602 } 2603 2604 code = hash_combine(code, I->first, I->second); 2605 } 2606 2607 // Extend the signature with the sysroot and other header search options. 2608 code = hash_combine(code, hsOpts.Sysroot, 2609 hsOpts.ModuleFormat, 2610 hsOpts.UseDebugInfo, 2611 hsOpts.UseBuiltinIncludes, 2612 hsOpts.UseStandardSystemIncludes, 2613 hsOpts.UseStandardCXXIncludes, 2614 hsOpts.UseLibcxx, 2615 hsOpts.ModulesValidateDiagnosticOptions); 2616 code = hash_combine(code, hsOpts.ResourceDir); 2617 2618 // Extend the signature with the user build path. 2619 code = hash_combine(code, hsOpts.ModuleUserBuildPath); 2620 2621 // Extend the signature with the module file extensions. 2622 const FrontendOptions &frontendOpts = getFrontendOpts(); 2623 for (const auto &ext : frontendOpts.ModuleFileExtensions) { 2624 code = ext->hashExtension(code); 2625 } 2626 2627 // Darwin-specific hack: if we have a sysroot, use the contents and 2628 // modification time of 2629 // $sysroot/System/Library/CoreServices/SystemVersion.plist 2630 // as part of the module hash. 2631 if (!hsOpts.Sysroot.empty()) { 2632 SmallString<128> systemVersionFile; 2633 systemVersionFile += hsOpts.Sysroot; 2634 llvm::sys::path::append(systemVersionFile, "System"); 2635 llvm::sys::path::append(systemVersionFile, "Library"); 2636 llvm::sys::path::append(systemVersionFile, "CoreServices"); 2637 llvm::sys::path::append(systemVersionFile, "SystemVersion.plist"); 2638 2639 llvm::ErrorOr<std::unique_ptr<llvm::MemoryBuffer>> buffer = 2640 llvm::MemoryBuffer::getFile(systemVersionFile); 2641 if (buffer) { 2642 code = hash_combine(code, buffer.get()->getBuffer()); 2643 2644 struct stat statBuf; 2645 if (stat(systemVersionFile.c_str(), &statBuf) == 0) 2646 code = hash_combine(code, statBuf.st_mtime); 2647 } 2648 } 2649 2650 return llvm::APInt(64, code).toString(36, /*Signed=*/false); 2651 } 2652 2653 namespace clang { 2654 2655 template<typename IntTy> 2656 static IntTy getLastArgIntValueImpl(const ArgList &Args, OptSpecifier Id, 2657 IntTy Default, 2658 DiagnosticsEngine *Diags) { 2659 IntTy Res = Default; 2660 if (Arg *A = Args.getLastArg(Id)) { 2661 if (StringRef(A->getValue()).getAsInteger(10, Res)) { 2662 if (Diags) 2663 Diags->Report(diag::err_drv_invalid_int_value) << A->getAsString(Args) 2664 << A->getValue(); 2665 } 2666 } 2667 return Res; 2668 } 2669 2670 2671 // Declared in clang/Frontend/Utils.h. 2672 int getLastArgIntValue(const ArgList &Args, OptSpecifier Id, int Default, 2673 DiagnosticsEngine *Diags) { 2674 return getLastArgIntValueImpl<int>(Args, Id, Default, Diags); 2675 } 2676 2677 uint64_t getLastArgUInt64Value(const ArgList &Args, OptSpecifier Id, 2678 uint64_t Default, 2679 DiagnosticsEngine *Diags) { 2680 return getLastArgIntValueImpl<uint64_t>(Args, Id, Default, Diags); 2681 } 2682 2683 void BuryPointer(const void *Ptr) { 2684 // This function may be called only a small fixed amount of times per each 2685 // invocation, otherwise we do actually have a leak which we want to report. 2686 // If this function is called more than kGraveYardMaxSize times, the pointers 2687 // will not be properly buried and a leak detector will report a leak, which 2688 // is what we want in such case. 2689 static const size_t kGraveYardMaxSize = 16; 2690 LLVM_ATTRIBUTE_UNUSED static const void *GraveYard[kGraveYardMaxSize]; 2691 static std::atomic<unsigned> GraveYardSize; 2692 unsigned Idx = GraveYardSize++; 2693 if (Idx >= kGraveYardMaxSize) 2694 return; 2695 GraveYard[Idx] = Ptr; 2696 } 2697 2698 IntrusiveRefCntPtr<vfs::FileSystem> 2699 createVFSFromCompilerInvocation(const CompilerInvocation &CI, 2700 DiagnosticsEngine &Diags) { 2701 if (CI.getHeaderSearchOpts().VFSOverlayFiles.empty()) 2702 return vfs::getRealFileSystem(); 2703 2704 IntrusiveRefCntPtr<vfs::OverlayFileSystem> 2705 Overlay(new vfs::OverlayFileSystem(vfs::getRealFileSystem())); 2706 // earlier vfs files are on the bottom 2707 for (const std::string &File : CI.getHeaderSearchOpts().VFSOverlayFiles) { 2708 llvm::ErrorOr<std::unique_ptr<llvm::MemoryBuffer>> Buffer = 2709 llvm::MemoryBuffer::getFile(File); 2710 if (!Buffer) { 2711 Diags.Report(diag::err_missing_vfs_overlay_file) << File; 2712 return IntrusiveRefCntPtr<vfs::FileSystem>(); 2713 } 2714 2715 IntrusiveRefCntPtr<vfs::FileSystem> FS = vfs::getVFSFromYAML( 2716 std::move(Buffer.get()), /*DiagHandler*/ nullptr, File); 2717 if (!FS.get()) { 2718 Diags.Report(diag::err_invalid_vfs_overlay) << File; 2719 return IntrusiveRefCntPtr<vfs::FileSystem>(); 2720 } 2721 Overlay->pushOverlay(FS); 2722 } 2723 return Overlay; 2724 } 2725 } // end namespace clang 2726