1 //===--- CompilerInvocation.cpp -------------------------------------------===// 2 // 3 // The LLVM Compiler Infrastructure 4 // 5 // This file is distributed under the University of Illinois Open Source 6 // License. See LICENSE.TXT for details. 7 // 8 //===----------------------------------------------------------------------===// 9 10 #include "clang/Frontend/CompilerInvocation.h" 11 #include "TestModuleFileExtension.h" 12 #include "clang/Basic/Builtins.h" 13 #include "clang/Basic/FileManager.h" 14 #include "clang/Basic/Version.h" 15 #include "clang/Config/config.h" 16 #include "clang/Driver/DriverDiagnostic.h" 17 #include "clang/Driver/Options.h" 18 #include "clang/Driver/Util.h" 19 #include "clang/Frontend/FrontendDiagnostic.h" 20 #include "clang/Frontend/LangStandard.h" 21 #include "clang/Frontend/Utils.h" 22 #include "clang/Lex/HeaderSearchOptions.h" 23 #include "clang/Lex/PreprocessorOptions.h" 24 #include "clang/Serialization/ASTReader.h" 25 #include "clang/Serialization/ModuleFileExtension.h" 26 #include "llvm/ADT/Hashing.h" 27 #include "llvm/ADT/STLExtras.h" 28 #include "llvm/ADT/SmallVector.h" 29 #include "llvm/ADT/StringExtras.h" 30 #include "llvm/ADT/StringSwitch.h" 31 #include "llvm/ADT/Triple.h" 32 #include "llvm/Linker/Linker.h" 33 #include "llvm/Option/Arg.h" 34 #include "llvm/Option/ArgList.h" 35 #include "llvm/Option/OptTable.h" 36 #include "llvm/Option/Option.h" 37 #include "llvm/ProfileData/InstrProfReader.h" 38 #include "llvm/Support/CodeGen.h" 39 #include "llvm/Support/ErrorHandling.h" 40 #include "llvm/Support/FileSystem.h" 41 #include "llvm/Support/Host.h" 42 #include "llvm/Support/Path.h" 43 #include "llvm/Support/Process.h" 44 #include "llvm/Target/TargetOptions.h" 45 #include "llvm/Support/ScopedPrinter.h" 46 #include <atomic> 47 #include <memory> 48 #include <sys/stat.h> 49 #include <system_error> 50 using namespace clang; 51 52 //===----------------------------------------------------------------------===// 53 // Initialization. 54 //===----------------------------------------------------------------------===// 55 56 CompilerInvocationBase::CompilerInvocationBase() 57 : LangOpts(new LangOptions()), TargetOpts(new TargetOptions()), 58 DiagnosticOpts(new DiagnosticOptions()), 59 HeaderSearchOpts(new HeaderSearchOptions()), 60 PreprocessorOpts(new PreprocessorOptions()) {} 61 62 CompilerInvocationBase::CompilerInvocationBase(const CompilerInvocationBase &X) 63 : LangOpts(new LangOptions(*X.getLangOpts())), 64 TargetOpts(new TargetOptions(X.getTargetOpts())), 65 DiagnosticOpts(new DiagnosticOptions(X.getDiagnosticOpts())), 66 HeaderSearchOpts(new HeaderSearchOptions(X.getHeaderSearchOpts())), 67 PreprocessorOpts(new PreprocessorOptions(X.getPreprocessorOpts())) {} 68 69 CompilerInvocationBase::~CompilerInvocationBase() {} 70 71 //===----------------------------------------------------------------------===// 72 // Deserialization (from args) 73 //===----------------------------------------------------------------------===// 74 75 using namespace clang::driver; 76 using namespace clang::driver::options; 77 using namespace llvm::opt; 78 79 // 80 81 static unsigned getOptimizationLevel(ArgList &Args, InputKind IK, 82 DiagnosticsEngine &Diags) { 83 unsigned DefaultOpt = 0; 84 if (IK.getLanguage() == InputKind::OpenCL && !Args.hasArg(OPT_cl_opt_disable)) 85 DefaultOpt = 2; 86 87 if (Arg *A = Args.getLastArg(options::OPT_O_Group)) { 88 if (A->getOption().matches(options::OPT_O0)) 89 return 0; 90 91 if (A->getOption().matches(options::OPT_Ofast)) 92 return 3; 93 94 assert (A->getOption().matches(options::OPT_O)); 95 96 StringRef S(A->getValue()); 97 if (S == "s" || S == "z" || S.empty()) 98 return 2; 99 100 if (S == "g") 101 return 1; 102 103 return getLastArgIntValue(Args, OPT_O, DefaultOpt, Diags); 104 } 105 106 return DefaultOpt; 107 } 108 109 static unsigned getOptimizationLevelSize(ArgList &Args) { 110 if (Arg *A = Args.getLastArg(options::OPT_O_Group)) { 111 if (A->getOption().matches(options::OPT_O)) { 112 switch (A->getValue()[0]) { 113 default: 114 return 0; 115 case 's': 116 return 1; 117 case 'z': 118 return 2; 119 } 120 } 121 } 122 return 0; 123 } 124 125 static void addDiagnosticArgs(ArgList &Args, OptSpecifier Group, 126 OptSpecifier GroupWithValue, 127 std::vector<std::string> &Diagnostics) { 128 for (Arg *A : Args.filtered(Group)) { 129 if (A->getOption().getKind() == Option::FlagClass) { 130 // The argument is a pure flag (such as OPT_Wall or OPT_Wdeprecated). Add 131 // its name (minus the "W" or "R" at the beginning) to the warning list. 132 Diagnostics.push_back(A->getOption().getName().drop_front(1)); 133 } else if (A->getOption().matches(GroupWithValue)) { 134 // This is -Wfoo= or -Rfoo=, where foo is the name of the diagnostic group. 135 Diagnostics.push_back(A->getOption().getName().drop_front(1).rtrim("=-")); 136 } else { 137 // Otherwise, add its value (for OPT_W_Joined and similar). 138 for (const char *Arg : A->getValues()) 139 Diagnostics.emplace_back(Arg); 140 } 141 } 142 } 143 144 static void getAllNoBuiltinFuncValues(ArgList &Args, 145 std::vector<std::string> &Funcs) { 146 SmallVector<const char *, 8> Values; 147 for (const auto &Arg : Args) { 148 const Option &O = Arg->getOption(); 149 if (O.matches(options::OPT_fno_builtin_)) { 150 const char *FuncName = Arg->getValue(); 151 if (Builtin::Context::isBuiltinFunc(FuncName)) 152 Values.push_back(FuncName); 153 } 154 } 155 Funcs.insert(Funcs.end(), Values.begin(), Values.end()); 156 } 157 158 static bool ParseAnalyzerArgs(AnalyzerOptions &Opts, ArgList &Args, 159 DiagnosticsEngine &Diags) { 160 using namespace options; 161 bool Success = true; 162 if (Arg *A = Args.getLastArg(OPT_analyzer_store)) { 163 StringRef Name = A->getValue(); 164 AnalysisStores Value = llvm::StringSwitch<AnalysisStores>(Name) 165 #define ANALYSIS_STORE(NAME, CMDFLAG, DESC, CREATFN) \ 166 .Case(CMDFLAG, NAME##Model) 167 #include "clang/StaticAnalyzer/Core/Analyses.def" 168 .Default(NumStores); 169 if (Value == NumStores) { 170 Diags.Report(diag::err_drv_invalid_value) 171 << A->getAsString(Args) << Name; 172 Success = false; 173 } else { 174 Opts.AnalysisStoreOpt = Value; 175 } 176 } 177 178 if (Arg *A = Args.getLastArg(OPT_analyzer_constraints)) { 179 StringRef Name = A->getValue(); 180 AnalysisConstraints Value = llvm::StringSwitch<AnalysisConstraints>(Name) 181 #define ANALYSIS_CONSTRAINTS(NAME, CMDFLAG, DESC, CREATFN) \ 182 .Case(CMDFLAG, NAME##Model) 183 #include "clang/StaticAnalyzer/Core/Analyses.def" 184 .Default(NumConstraints); 185 if (Value == NumConstraints) { 186 Diags.Report(diag::err_drv_invalid_value) 187 << A->getAsString(Args) << Name; 188 Success = false; 189 } else { 190 Opts.AnalysisConstraintsOpt = Value; 191 } 192 } 193 194 if (Arg *A = Args.getLastArg(OPT_analyzer_output)) { 195 StringRef Name = A->getValue(); 196 AnalysisDiagClients Value = llvm::StringSwitch<AnalysisDiagClients>(Name) 197 #define ANALYSIS_DIAGNOSTICS(NAME, CMDFLAG, DESC, CREATFN) \ 198 .Case(CMDFLAG, PD_##NAME) 199 #include "clang/StaticAnalyzer/Core/Analyses.def" 200 .Default(NUM_ANALYSIS_DIAG_CLIENTS); 201 if (Value == NUM_ANALYSIS_DIAG_CLIENTS) { 202 Diags.Report(diag::err_drv_invalid_value) 203 << A->getAsString(Args) << Name; 204 Success = false; 205 } else { 206 Opts.AnalysisDiagOpt = Value; 207 } 208 } 209 210 if (Arg *A = Args.getLastArg(OPT_analyzer_purge)) { 211 StringRef Name = A->getValue(); 212 AnalysisPurgeMode Value = llvm::StringSwitch<AnalysisPurgeMode>(Name) 213 #define ANALYSIS_PURGE(NAME, CMDFLAG, DESC) \ 214 .Case(CMDFLAG, NAME) 215 #include "clang/StaticAnalyzer/Core/Analyses.def" 216 .Default(NumPurgeModes); 217 if (Value == NumPurgeModes) { 218 Diags.Report(diag::err_drv_invalid_value) 219 << A->getAsString(Args) << Name; 220 Success = false; 221 } else { 222 Opts.AnalysisPurgeOpt = Value; 223 } 224 } 225 226 if (Arg *A = Args.getLastArg(OPT_analyzer_inlining_mode)) { 227 StringRef Name = A->getValue(); 228 AnalysisInliningMode Value = llvm::StringSwitch<AnalysisInliningMode>(Name) 229 #define ANALYSIS_INLINING_MODE(NAME, CMDFLAG, DESC) \ 230 .Case(CMDFLAG, NAME) 231 #include "clang/StaticAnalyzer/Core/Analyses.def" 232 .Default(NumInliningModes); 233 if (Value == NumInliningModes) { 234 Diags.Report(diag::err_drv_invalid_value) 235 << A->getAsString(Args) << Name; 236 Success = false; 237 } else { 238 Opts.InliningMode = Value; 239 } 240 } 241 242 Opts.ShowCheckerHelp = Args.hasArg(OPT_analyzer_checker_help); 243 Opts.ShowEnabledCheckerList = Args.hasArg(OPT_analyzer_list_enabled_checkers); 244 Opts.DisableAllChecks = Args.hasArg(OPT_analyzer_disable_all_checks); 245 246 Opts.visualizeExplodedGraphWithGraphViz = 247 Args.hasArg(OPT_analyzer_viz_egraph_graphviz); 248 Opts.visualizeExplodedGraphWithUbiGraph = 249 Args.hasArg(OPT_analyzer_viz_egraph_ubigraph); 250 Opts.NoRetryExhausted = Args.hasArg(OPT_analyzer_disable_retry_exhausted); 251 Opts.AnalyzeAll = Args.hasArg(OPT_analyzer_opt_analyze_headers); 252 Opts.AnalyzerDisplayProgress = Args.hasArg(OPT_analyzer_display_progress); 253 Opts.AnalyzeNestedBlocks = 254 Args.hasArg(OPT_analyzer_opt_analyze_nested_blocks); 255 Opts.eagerlyAssumeBinOpBifurcation = Args.hasArg(OPT_analyzer_eagerly_assume); 256 Opts.AnalyzeSpecificFunction = Args.getLastArgValue(OPT_analyze_function); 257 Opts.UnoptimizedCFG = Args.hasArg(OPT_analysis_UnoptimizedCFG); 258 Opts.TrimGraph = Args.hasArg(OPT_trim_egraph); 259 Opts.maxBlockVisitOnPath = 260 getLastArgIntValue(Args, OPT_analyzer_max_loop, 4, Diags); 261 Opts.PrintStats = Args.hasArg(OPT_analyzer_stats); 262 Opts.InlineMaxStackDepth = 263 getLastArgIntValue(Args, OPT_analyzer_inline_max_stack_depth, 264 Opts.InlineMaxStackDepth, Diags); 265 266 Opts.CheckersControlList.clear(); 267 for (const Arg *A : 268 Args.filtered(OPT_analyzer_checker, OPT_analyzer_disable_checker)) { 269 A->claim(); 270 bool enable = (A->getOption().getID() == OPT_analyzer_checker); 271 // We can have a list of comma separated checker names, e.g: 272 // '-analyzer-checker=cocoa,unix' 273 StringRef checkerList = A->getValue(); 274 SmallVector<StringRef, 4> checkers; 275 checkerList.split(checkers, ","); 276 for (StringRef checker : checkers) 277 Opts.CheckersControlList.emplace_back(checker, enable); 278 } 279 280 // Go through the analyzer configuration options. 281 for (const Arg *A : Args.filtered(OPT_analyzer_config)) { 282 A->claim(); 283 // We can have a list of comma separated config names, e.g: 284 // '-analyzer-config key1=val1,key2=val2' 285 StringRef configList = A->getValue(); 286 SmallVector<StringRef, 4> configVals; 287 configList.split(configVals, ","); 288 for (unsigned i = 0, e = configVals.size(); i != e; ++i) { 289 StringRef key, val; 290 std::tie(key, val) = configVals[i].split("="); 291 if (val.empty()) { 292 Diags.Report(SourceLocation(), 293 diag::err_analyzer_config_no_value) << configVals[i]; 294 Success = false; 295 break; 296 } 297 if (val.find('=') != StringRef::npos) { 298 Diags.Report(SourceLocation(), 299 diag::err_analyzer_config_multiple_values) 300 << configVals[i]; 301 Success = false; 302 break; 303 } 304 Opts.Config[key] = val; 305 } 306 } 307 308 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 static StringRef getRelocModel(ArgList &Args, DiagnosticsEngine &Diags) { 334 if (Arg *A = Args.getLastArg(OPT_mrelocation_model)) { 335 StringRef Value = A->getValue(); 336 if (Value == "static" || Value == "pic" || Value == "ropi" || 337 Value == "rwpi" || Value == "ropi-rwpi" || Value == "dynamic-no-pic") 338 return Value; 339 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Value; 340 } 341 return "pic"; 342 } 343 344 /// \brief Create a new Regex instance out of the string value in \p RpassArg. 345 /// It returns a pointer to the newly generated Regex instance. 346 static std::shared_ptr<llvm::Regex> 347 GenerateOptimizationRemarkRegex(DiagnosticsEngine &Diags, ArgList &Args, 348 Arg *RpassArg) { 349 StringRef Val = RpassArg->getValue(); 350 std::string RegexError; 351 std::shared_ptr<llvm::Regex> Pattern = std::make_shared<llvm::Regex>(Val); 352 if (!Pattern->isValid(RegexError)) { 353 Diags.Report(diag::err_drv_optimization_remark_pattern) 354 << RegexError << RpassArg->getAsString(Args); 355 Pattern.reset(); 356 } 357 return Pattern; 358 } 359 360 static bool parseDiagnosticLevelMask(StringRef FlagName, 361 const std::vector<std::string> &Levels, 362 DiagnosticsEngine *Diags, 363 DiagnosticLevelMask &M) { 364 bool Success = true; 365 for (const auto &Level : Levels) { 366 DiagnosticLevelMask const PM = 367 llvm::StringSwitch<DiagnosticLevelMask>(Level) 368 .Case("note", DiagnosticLevelMask::Note) 369 .Case("remark", DiagnosticLevelMask::Remark) 370 .Case("warning", DiagnosticLevelMask::Warning) 371 .Case("error", DiagnosticLevelMask::Error) 372 .Default(DiagnosticLevelMask::None); 373 if (PM == DiagnosticLevelMask::None) { 374 Success = false; 375 if (Diags) 376 Diags->Report(diag::err_drv_invalid_value) << FlagName << Level; 377 } 378 M = M | PM; 379 } 380 return Success; 381 } 382 383 static void parseSanitizerKinds(StringRef FlagName, 384 const std::vector<std::string> &Sanitizers, 385 DiagnosticsEngine &Diags, SanitizerSet &S) { 386 for (const auto &Sanitizer : Sanitizers) { 387 SanitizerMask K = parseSanitizerValue(Sanitizer, /*AllowGroups=*/false); 388 if (K == 0) 389 Diags.Report(diag::err_drv_invalid_value) << FlagName << Sanitizer; 390 else 391 S.set(K, true); 392 } 393 } 394 395 // Set the profile kind for fprofile-instrument. 396 static void setPGOInstrumentor(CodeGenOptions &Opts, ArgList &Args, 397 DiagnosticsEngine &Diags) { 398 Arg *A = Args.getLastArg(OPT_fprofile_instrument_EQ); 399 if (A == nullptr) 400 return; 401 StringRef S = A->getValue(); 402 unsigned I = llvm::StringSwitch<unsigned>(S) 403 .Case("none", CodeGenOptions::ProfileNone) 404 .Case("clang", CodeGenOptions::ProfileClangInstr) 405 .Case("llvm", CodeGenOptions::ProfileIRInstr) 406 .Default(~0U); 407 if (I == ~0U) { 408 Diags.Report(diag::err_drv_invalid_pgo_instrumentor) << A->getAsString(Args) 409 << S; 410 return; 411 } 412 CodeGenOptions::ProfileInstrKind Instrumentor = 413 static_cast<CodeGenOptions::ProfileInstrKind>(I); 414 Opts.setProfileInstr(Instrumentor); 415 } 416 417 // Set the profile kind using fprofile-instrument-use-path. 418 static void setPGOUseInstrumentor(CodeGenOptions &Opts, 419 const Twine &ProfileName) { 420 auto ReaderOrErr = llvm::IndexedInstrProfReader::create(ProfileName); 421 // In error, return silently and let Clang PGOUse report the error message. 422 if (auto E = ReaderOrErr.takeError()) { 423 llvm::consumeError(std::move(E)); 424 Opts.setProfileUse(CodeGenOptions::ProfileClangInstr); 425 return; 426 } 427 std::unique_ptr<llvm::IndexedInstrProfReader> PGOReader = 428 std::move(ReaderOrErr.get()); 429 if (PGOReader->isIRLevelProfile()) 430 Opts.setProfileUse(CodeGenOptions::ProfileIRInstr); 431 else 432 Opts.setProfileUse(CodeGenOptions::ProfileClangInstr); 433 } 434 435 static bool ParseCodeGenArgs(CodeGenOptions &Opts, ArgList &Args, InputKind IK, 436 DiagnosticsEngine &Diags, 437 const TargetOptions &TargetOpts) { 438 using namespace options; 439 bool Success = true; 440 llvm::Triple Triple = llvm::Triple(TargetOpts.Triple); 441 442 unsigned OptimizationLevel = getOptimizationLevel(Args, IK, Diags); 443 // TODO: This could be done in Driver 444 unsigned MaxOptLevel = 3; 445 if (OptimizationLevel > MaxOptLevel) { 446 // If the optimization level is not supported, fall back on the default 447 // optimization 448 Diags.Report(diag::warn_drv_optimization_value) 449 << Args.getLastArg(OPT_O)->getAsString(Args) << "-O" << MaxOptLevel; 450 OptimizationLevel = MaxOptLevel; 451 } 452 Opts.OptimizationLevel = OptimizationLevel; 453 454 // At O0 we want to fully disable inlining outside of cases marked with 455 // 'alwaysinline' that are required for correctness. 456 Opts.setInlining((Opts.OptimizationLevel == 0) 457 ? CodeGenOptions::OnlyAlwaysInlining 458 : CodeGenOptions::NormalInlining); 459 // Explicit inlining flags can disable some or all inlining even at 460 // optimization levels above zero. 461 if (Arg *InlineArg = Args.getLastArg( 462 options::OPT_finline_functions, options::OPT_finline_hint_functions, 463 options::OPT_fno_inline_functions, options::OPT_fno_inline)) { 464 if (Opts.OptimizationLevel > 0) { 465 const Option &InlineOpt = InlineArg->getOption(); 466 if (InlineOpt.matches(options::OPT_finline_functions)) 467 Opts.setInlining(CodeGenOptions::NormalInlining); 468 else if (InlineOpt.matches(options::OPT_finline_hint_functions)) 469 Opts.setInlining(CodeGenOptions::OnlyHintInlining); 470 else 471 Opts.setInlining(CodeGenOptions::OnlyAlwaysInlining); 472 } 473 } 474 475 Opts.ExperimentalNewPassManager = Args.hasFlag( 476 OPT_fexperimental_new_pass_manager, OPT_fno_experimental_new_pass_manager, 477 /* Default */ false); 478 479 Opts.DebugPassManager = 480 Args.hasFlag(OPT_fdebug_pass_manager, OPT_fno_debug_pass_manager, 481 /* Default */ false); 482 483 if (Arg *A = Args.getLastArg(OPT_fveclib)) { 484 StringRef Name = A->getValue(); 485 if (Name == "Accelerate") 486 Opts.setVecLib(CodeGenOptions::Accelerate); 487 else if (Name == "SVML") 488 Opts.setVecLib(CodeGenOptions::SVML); 489 else if (Name == "none") 490 Opts.setVecLib(CodeGenOptions::NoLibrary); 491 else 492 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Name; 493 } 494 495 if (Arg *A = Args.getLastArg(OPT_debug_info_kind_EQ)) { 496 unsigned Val = 497 llvm::StringSwitch<unsigned>(A->getValue()) 498 .Case("line-tables-only", codegenoptions::DebugLineTablesOnly) 499 .Case("limited", codegenoptions::LimitedDebugInfo) 500 .Case("standalone", codegenoptions::FullDebugInfo) 501 .Default(~0U); 502 if (Val == ~0U) 503 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) 504 << A->getValue(); 505 else 506 Opts.setDebugInfo(static_cast<codegenoptions::DebugInfoKind>(Val)); 507 } 508 if (Arg *A = Args.getLastArg(OPT_debugger_tuning_EQ)) { 509 unsigned Val = llvm::StringSwitch<unsigned>(A->getValue()) 510 .Case("gdb", unsigned(llvm::DebuggerKind::GDB)) 511 .Case("lldb", unsigned(llvm::DebuggerKind::LLDB)) 512 .Case("sce", unsigned(llvm::DebuggerKind::SCE)) 513 .Default(~0U); 514 if (Val == ~0U) 515 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) 516 << A->getValue(); 517 else 518 Opts.setDebuggerTuning(static_cast<llvm::DebuggerKind>(Val)); 519 } 520 Opts.DwarfVersion = getLastArgIntValue(Args, OPT_dwarf_version_EQ, 0, Diags); 521 Opts.DebugColumnInfo = Args.hasArg(OPT_dwarf_column_info); 522 Opts.EmitCodeView = Args.hasArg(OPT_gcodeview); 523 Opts.MacroDebugInfo = Args.hasArg(OPT_debug_info_macro); 524 Opts.WholeProgramVTables = Args.hasArg(OPT_fwhole_program_vtables); 525 Opts.LTOVisibilityPublicStd = Args.hasArg(OPT_flto_visibility_public_std); 526 Opts.EnableSplitDwarf = Args.hasArg(OPT_enable_split_dwarf); 527 Opts.SplitDwarfFile = Args.getLastArgValue(OPT_split_dwarf_file); 528 Opts.SplitDwarfInlining = !Args.hasArg(OPT_fno_split_dwarf_inlining); 529 Opts.DebugTypeExtRefs = Args.hasArg(OPT_dwarf_ext_refs); 530 Opts.DebugExplicitImport = Args.hasArg(OPT_dwarf_explicit_import); 531 Opts.DebugFwdTemplateParams = Args.hasArg(OPT_debug_forward_template_params); 532 533 for (const auto &Arg : Args.getAllArgValues(OPT_fdebug_prefix_map_EQ)) 534 Opts.DebugPrefixMap.insert(StringRef(Arg).split('=')); 535 536 if (const Arg *A = 537 Args.getLastArg(OPT_emit_llvm_uselists, OPT_no_emit_llvm_uselists)) 538 Opts.EmitLLVMUseLists = A->getOption().getID() == OPT_emit_llvm_uselists; 539 540 Opts.DisableLLVMPasses = Args.hasArg(OPT_disable_llvm_passes); 541 Opts.DisableLifetimeMarkers = Args.hasArg(OPT_disable_lifetimemarkers); 542 Opts.DisableO0ImplyOptNone = Args.hasArg(OPT_disable_O0_optnone); 543 Opts.DisableRedZone = Args.hasArg(OPT_disable_red_zone); 544 Opts.ForbidGuardVariables = Args.hasArg(OPT_fforbid_guard_variables); 545 Opts.UseRegisterSizedBitfieldAccess = Args.hasArg( 546 OPT_fuse_register_sized_bitfield_access); 547 Opts.RelaxedAliasing = Args.hasArg(OPT_relaxed_aliasing); 548 Opts.StructPathTBAA = !Args.hasArg(OPT_no_struct_path_tbaa); 549 Opts.NewStructPathTBAA = !Args.hasArg(OPT_no_struct_path_tbaa) && 550 Args.hasArg(OPT_new_struct_path_tbaa); 551 Opts.FineGrainedBitfieldAccesses = 552 Args.hasFlag(OPT_ffine_grained_bitfield_accesses, 553 OPT_fno_fine_grained_bitfield_accesses, false); 554 Opts.DwarfDebugFlags = Args.getLastArgValue(OPT_dwarf_debug_flags); 555 Opts.MergeAllConstants = !Args.hasArg(OPT_fno_merge_all_constants); 556 Opts.NoCommon = Args.hasArg(OPT_fno_common); 557 Opts.NoImplicitFloat = Args.hasArg(OPT_no_implicit_float); 558 Opts.OptimizeSize = getOptimizationLevelSize(Args); 559 Opts.SimplifyLibCalls = !(Args.hasArg(OPT_fno_builtin) || 560 Args.hasArg(OPT_ffreestanding)); 561 if (Opts.SimplifyLibCalls) 562 getAllNoBuiltinFuncValues(Args, Opts.NoBuiltinFuncs); 563 Opts.UnrollLoops = 564 Args.hasFlag(OPT_funroll_loops, OPT_fno_unroll_loops, 565 (Opts.OptimizationLevel > 1)); 566 Opts.RerollLoops = Args.hasArg(OPT_freroll_loops); 567 568 Opts.DisableIntegratedAS = Args.hasArg(OPT_fno_integrated_as); 569 Opts.Autolink = !Args.hasArg(OPT_fno_autolink); 570 Opts.SampleProfileFile = Args.getLastArgValue(OPT_fprofile_sample_use_EQ); 571 Opts.DebugInfoForProfiling = Args.hasFlag( 572 OPT_fdebug_info_for_profiling, OPT_fno_debug_info_for_profiling, false); 573 Opts.GnuPubnames = Args.hasArg(OPT_ggnu_pubnames); 574 575 setPGOInstrumentor(Opts, Args, Diags); 576 Opts.InstrProfileOutput = 577 Args.getLastArgValue(OPT_fprofile_instrument_path_EQ); 578 Opts.ProfileInstrumentUsePath = 579 Args.getLastArgValue(OPT_fprofile_instrument_use_path_EQ); 580 if (!Opts.ProfileInstrumentUsePath.empty()) 581 setPGOUseInstrumentor(Opts, Opts.ProfileInstrumentUsePath); 582 583 if (Arg *A = Args.getLastArg(OPT_fclang_abi_compat_EQ)) { 584 Opts.setClangABICompat(CodeGenOptions::ClangABI::Latest); 585 586 StringRef Ver = A->getValue(); 587 std::pair<StringRef, StringRef> VerParts = Ver.split('.'); 588 unsigned Major, Minor = 0; 589 590 // Check the version number is valid: either 3.x (0 <= x <= 9) or 591 // y or y.0 (4 <= y <= current version). 592 if (!VerParts.first.startswith("0") && 593 !VerParts.first.getAsInteger(10, Major) && 594 3 <= Major && Major <= CLANG_VERSION_MAJOR && 595 (Major == 3 ? VerParts.second.size() == 1 && 596 !VerParts.second.getAsInteger(10, Minor) 597 : VerParts.first.size() == Ver.size() || 598 VerParts.second == "0")) { 599 // Got a valid version number. 600 if (Major == 3 && Minor <= 8) 601 Opts.setClangABICompat(CodeGenOptions::ClangABI::Ver3_8); 602 else if (Major <= 4) 603 Opts.setClangABICompat(CodeGenOptions::ClangABI::Ver4); 604 } else if (Ver != "latest") { 605 Diags.Report(diag::err_drv_invalid_value) 606 << A->getAsString(Args) << A->getValue(); 607 } 608 } 609 610 Opts.CoverageMapping = 611 Args.hasFlag(OPT_fcoverage_mapping, OPT_fno_coverage_mapping, false); 612 Opts.DumpCoverageMapping = Args.hasArg(OPT_dump_coverage_mapping); 613 Opts.AsmVerbose = Args.hasArg(OPT_masm_verbose); 614 Opts.PreserveAsmComments = !Args.hasArg(OPT_fno_preserve_as_comments); 615 Opts.AssumeSaneOperatorNew = !Args.hasArg(OPT_fno_assume_sane_operator_new); 616 Opts.ObjCAutoRefCountExceptions = Args.hasArg(OPT_fobjc_arc_exceptions); 617 Opts.CXAAtExit = !Args.hasArg(OPT_fno_use_cxa_atexit); 618 Opts.CXXCtorDtorAliases = Args.hasArg(OPT_mconstructor_aliases); 619 Opts.CodeModel = getCodeModel(Args, Diags); 620 Opts.DebugPass = Args.getLastArgValue(OPT_mdebug_pass); 621 Opts.DisableFPElim = 622 (Args.hasArg(OPT_mdisable_fp_elim) || Args.hasArg(OPT_pg)); 623 Opts.DisableFree = Args.hasArg(OPT_disable_free); 624 Opts.DiscardValueNames = Args.hasArg(OPT_discard_value_names); 625 Opts.DisableTailCalls = Args.hasArg(OPT_mdisable_tail_calls); 626 Opts.FloatABI = Args.getLastArgValue(OPT_mfloat_abi); 627 Opts.LessPreciseFPMAD = Args.hasArg(OPT_cl_mad_enable) || 628 Args.hasArg(OPT_cl_unsafe_math_optimizations) || 629 Args.hasArg(OPT_cl_fast_relaxed_math); 630 Opts.LimitFloatPrecision = Args.getLastArgValue(OPT_mlimit_float_precision); 631 Opts.NoInfsFPMath = (Args.hasArg(OPT_menable_no_infinities) || 632 Args.hasArg(OPT_cl_finite_math_only) || 633 Args.hasArg(OPT_cl_fast_relaxed_math)); 634 Opts.NoNaNsFPMath = (Args.hasArg(OPT_menable_no_nans) || 635 Args.hasArg(OPT_cl_unsafe_math_optimizations) || 636 Args.hasArg(OPT_cl_finite_math_only) || 637 Args.hasArg(OPT_cl_fast_relaxed_math)); 638 Opts.NoSignedZeros = (Args.hasArg(OPT_fno_signed_zeros) || 639 Args.hasArg(OPT_cl_no_signed_zeros) || 640 Args.hasArg(OPT_cl_unsafe_math_optimizations) || 641 Args.hasArg(OPT_cl_fast_relaxed_math)); 642 Opts.FlushDenorm = Args.hasArg(OPT_cl_denorms_are_zero); 643 Opts.CorrectlyRoundedDivSqrt = 644 Args.hasArg(OPT_cl_fp32_correctly_rounded_divide_sqrt); 645 Opts.Reciprocals = Args.getAllArgValues(OPT_mrecip_EQ); 646 Opts.ReciprocalMath = Args.hasArg(OPT_freciprocal_math); 647 Opts.NoTrappingMath = Args.hasArg(OPT_fno_trapping_math); 648 Opts.NoZeroInitializedInBSS = Args.hasArg(OPT_mno_zero_initialized_in_bss); 649 Opts.BackendOptions = Args.getAllArgValues(OPT_backend_option); 650 Opts.NumRegisterParameters = getLastArgIntValue(Args, OPT_mregparm, 0, Diags); 651 Opts.NoExecStack = Args.hasArg(OPT_mno_exec_stack); 652 Opts.FatalWarnings = Args.hasArg(OPT_massembler_fatal_warnings); 653 Opts.EnableSegmentedStacks = Args.hasArg(OPT_split_stacks); 654 Opts.RelaxAll = Args.hasArg(OPT_mrelax_all); 655 Opts.IncrementalLinkerCompatible = 656 Args.hasArg(OPT_mincremental_linker_compatible); 657 Opts.PIECopyRelocations = 658 Args.hasArg(OPT_mpie_copy_relocations); 659 Opts.NoPLT = Args.hasArg(OPT_fno_plt); 660 Opts.OmitLeafFramePointer = Args.hasArg(OPT_momit_leaf_frame_pointer); 661 Opts.SaveTempLabels = Args.hasArg(OPT_msave_temp_labels); 662 Opts.NoDwarfDirectoryAsm = Args.hasArg(OPT_fno_dwarf_directory_asm); 663 Opts.SoftFloat = Args.hasArg(OPT_msoft_float); 664 Opts.StrictEnums = Args.hasArg(OPT_fstrict_enums); 665 Opts.StrictReturn = !Args.hasArg(OPT_fno_strict_return); 666 Opts.StrictVTablePointers = Args.hasArg(OPT_fstrict_vtable_pointers); 667 Opts.UnsafeFPMath = Args.hasArg(OPT_menable_unsafe_fp_math) || 668 Args.hasArg(OPT_cl_unsafe_math_optimizations) || 669 Args.hasArg(OPT_cl_fast_relaxed_math); 670 Opts.UnwindTables = Args.hasArg(OPT_munwind_tables); 671 Opts.RelocationModel = getRelocModel(Args, Diags); 672 Opts.ThreadModel = Args.getLastArgValue(OPT_mthread_model, "posix"); 673 if (Opts.ThreadModel != "posix" && Opts.ThreadModel != "single") 674 Diags.Report(diag::err_drv_invalid_value) 675 << Args.getLastArg(OPT_mthread_model)->getAsString(Args) 676 << Opts.ThreadModel; 677 Opts.TrapFuncName = Args.getLastArgValue(OPT_ftrap_function_EQ); 678 Opts.UseInitArray = Args.hasArg(OPT_fuse_init_array); 679 680 Opts.FunctionSections = Args.hasFlag(OPT_ffunction_sections, 681 OPT_fno_function_sections, false); 682 Opts.DataSections = Args.hasFlag(OPT_fdata_sections, 683 OPT_fno_data_sections, false); 684 Opts.UniqueSectionNames = Args.hasFlag(OPT_funique_section_names, 685 OPT_fno_unique_section_names, true); 686 687 Opts.MergeFunctions = Args.hasArg(OPT_fmerge_functions); 688 689 Opts.NoUseJumpTables = Args.hasArg(OPT_fno_jump_tables); 690 691 Opts.ProfileSampleAccurate = Args.hasArg(OPT_fprofile_sample_accurate); 692 693 Opts.PrepareForLTO = Args.hasArg(OPT_flto, OPT_flto_EQ); 694 Opts.EmitSummaryIndex = false; 695 if (Arg *A = Args.getLastArg(OPT_flto_EQ)) { 696 StringRef S = A->getValue(); 697 if (S == "thin") 698 Opts.EmitSummaryIndex = true; 699 else if (S != "full") 700 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << S; 701 } 702 Opts.LTOUnit = Args.hasFlag(OPT_flto_unit, OPT_fno_lto_unit, false); 703 if (Arg *A = Args.getLastArg(OPT_fthinlto_index_EQ)) { 704 if (IK.getLanguage() != InputKind::LLVM_IR) 705 Diags.Report(diag::err_drv_argument_only_allowed_with) 706 << A->getAsString(Args) << "-x ir"; 707 Opts.ThinLTOIndexFile = Args.getLastArgValue(OPT_fthinlto_index_EQ); 708 } 709 Opts.ThinLinkBitcodeFile = Args.getLastArgValue(OPT_fthin_link_bitcode_EQ); 710 711 Opts.MSVolatile = Args.hasArg(OPT_fms_volatile); 712 713 Opts.VectorizeLoop = Args.hasArg(OPT_vectorize_loops); 714 Opts.VectorizeSLP = Args.hasArg(OPT_vectorize_slp); 715 716 Opts.MainFileName = Args.getLastArgValue(OPT_main_file_name); 717 Opts.VerifyModule = !Args.hasArg(OPT_disable_llvm_verifier); 718 719 Opts.DisableGCov = Args.hasArg(OPT_test_coverage); 720 Opts.EmitGcovArcs = Args.hasArg(OPT_femit_coverage_data); 721 Opts.EmitGcovNotes = Args.hasArg(OPT_femit_coverage_notes); 722 if (Opts.EmitGcovArcs || Opts.EmitGcovNotes) { 723 Opts.CoverageDataFile = Args.getLastArgValue(OPT_coverage_data_file); 724 Opts.CoverageNotesFile = Args.getLastArgValue(OPT_coverage_notes_file); 725 Opts.CoverageExtraChecksum = Args.hasArg(OPT_coverage_cfg_checksum); 726 Opts.CoverageNoFunctionNamesInData = 727 Args.hasArg(OPT_coverage_no_function_names_in_data); 728 Opts.CoverageExitBlockBeforeBody = 729 Args.hasArg(OPT_coverage_exit_block_before_body); 730 if (Args.hasArg(OPT_coverage_version_EQ)) { 731 StringRef CoverageVersion = Args.getLastArgValue(OPT_coverage_version_EQ); 732 if (CoverageVersion.size() != 4) { 733 Diags.Report(diag::err_drv_invalid_value) 734 << Args.getLastArg(OPT_coverage_version_EQ)->getAsString(Args) 735 << CoverageVersion; 736 } else { 737 memcpy(Opts.CoverageVersion, CoverageVersion.data(), 4); 738 } 739 } 740 } 741 // Handle -fembed-bitcode option. 742 if (Arg *A = Args.getLastArg(OPT_fembed_bitcode_EQ)) { 743 StringRef Name = A->getValue(); 744 unsigned Model = llvm::StringSwitch<unsigned>(Name) 745 .Case("off", CodeGenOptions::Embed_Off) 746 .Case("all", CodeGenOptions::Embed_All) 747 .Case("bitcode", CodeGenOptions::Embed_Bitcode) 748 .Case("marker", CodeGenOptions::Embed_Marker) 749 .Default(~0U); 750 if (Model == ~0U) { 751 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Name; 752 Success = false; 753 } else 754 Opts.setEmbedBitcode( 755 static_cast<CodeGenOptions::EmbedBitcodeKind>(Model)); 756 } 757 // FIXME: For backend options that are not yet recorded as function 758 // attributes in the IR, keep track of them so we can embed them in a 759 // separate data section and use them when building the bitcode. 760 if (Opts.getEmbedBitcode() == CodeGenOptions::Embed_All) { 761 for (const auto &A : Args) { 762 // Do not encode output and input. 763 if (A->getOption().getID() == options::OPT_o || 764 A->getOption().getID() == options::OPT_INPUT || 765 A->getOption().getID() == options::OPT_x || 766 A->getOption().getID() == options::OPT_fembed_bitcode || 767 (A->getOption().getGroup().isValid() && 768 A->getOption().getGroup().getID() == options::OPT_W_Group)) 769 continue; 770 ArgStringList ASL; 771 A->render(Args, ASL); 772 for (const auto &arg : ASL) { 773 StringRef ArgStr(arg); 774 Opts.CmdArgs.insert(Opts.CmdArgs.end(), ArgStr.begin(), ArgStr.end()); 775 // using \00 to seperate each commandline options. 776 Opts.CmdArgs.push_back('\0'); 777 } 778 } 779 } 780 781 Opts.PreserveVec3Type = Args.hasArg(OPT_fpreserve_vec3_type); 782 Opts.InstrumentFunctions = Args.hasArg(OPT_finstrument_functions); 783 Opts.InstrumentFunctionsAfterInlining = 784 Args.hasArg(OPT_finstrument_functions_after_inlining); 785 Opts.InstrumentFunctionEntryBare = 786 Args.hasArg(OPT_finstrument_function_entry_bare); 787 Opts.XRayInstrumentFunctions = Args.hasArg(OPT_fxray_instrument); 788 Opts.XRayAlwaysEmitCustomEvents = 789 Args.hasArg(OPT_fxray_always_emit_customevents); 790 Opts.XRayInstructionThreshold = 791 getLastArgIntValue(Args, OPT_fxray_instruction_threshold_EQ, 200, Diags); 792 Opts.InstrumentForProfiling = Args.hasArg(OPT_pg); 793 Opts.CallFEntry = Args.hasArg(OPT_mfentry); 794 Opts.EmitOpenCLArgMetadata = Args.hasArg(OPT_cl_kernel_arg_info); 795 796 if (const Arg *A = Args.getLastArg(OPT_compress_debug_sections, 797 OPT_compress_debug_sections_EQ)) { 798 if (A->getOption().getID() == OPT_compress_debug_sections) { 799 // TODO: be more clever about the compression type auto-detection 800 Opts.setCompressDebugSections(llvm::DebugCompressionType::GNU); 801 } else { 802 auto DCT = llvm::StringSwitch<llvm::DebugCompressionType>(A->getValue()) 803 .Case("none", llvm::DebugCompressionType::None) 804 .Case("zlib", llvm::DebugCompressionType::Z) 805 .Case("zlib-gnu", llvm::DebugCompressionType::GNU) 806 .Default(llvm::DebugCompressionType::None); 807 Opts.setCompressDebugSections(DCT); 808 } 809 } 810 811 Opts.RelaxELFRelocations = Args.hasArg(OPT_mrelax_relocations); 812 Opts.DebugCompilationDir = Args.getLastArgValue(OPT_fdebug_compilation_dir); 813 for (auto A : Args.filtered(OPT_mlink_bitcode_file, OPT_mlink_cuda_bitcode)) { 814 CodeGenOptions::BitcodeFileToLink F; 815 F.Filename = A->getValue(); 816 if (A->getOption().matches(OPT_mlink_cuda_bitcode)) { 817 F.LinkFlags = llvm::Linker::Flags::LinkOnlyNeeded; 818 // When linking CUDA bitcode, propagate function attributes so that 819 // e.g. libdevice gets fast-math attrs if we're building with fast-math. 820 F.PropagateAttrs = true; 821 F.Internalize = true; 822 } 823 Opts.LinkBitcodeFiles.push_back(F); 824 } 825 Opts.SanitizeCoverageType = 826 getLastArgIntValue(Args, OPT_fsanitize_coverage_type, 0, Diags); 827 Opts.SanitizeCoverageIndirectCalls = 828 Args.hasArg(OPT_fsanitize_coverage_indirect_calls); 829 Opts.SanitizeCoverageTraceBB = Args.hasArg(OPT_fsanitize_coverage_trace_bb); 830 Opts.SanitizeCoverageTraceCmp = Args.hasArg(OPT_fsanitize_coverage_trace_cmp); 831 Opts.SanitizeCoverageTraceDiv = Args.hasArg(OPT_fsanitize_coverage_trace_div); 832 Opts.SanitizeCoverageTraceGep = Args.hasArg(OPT_fsanitize_coverage_trace_gep); 833 Opts.SanitizeCoverage8bitCounters = 834 Args.hasArg(OPT_fsanitize_coverage_8bit_counters); 835 Opts.SanitizeCoverageTracePC = Args.hasArg(OPT_fsanitize_coverage_trace_pc); 836 Opts.SanitizeCoverageTracePCGuard = 837 Args.hasArg(OPT_fsanitize_coverage_trace_pc_guard); 838 Opts.SanitizeCoverageNoPrune = Args.hasArg(OPT_fsanitize_coverage_no_prune); 839 Opts.SanitizeCoverageInline8bitCounters = 840 Args.hasArg(OPT_fsanitize_coverage_inline_8bit_counters); 841 Opts.SanitizeCoveragePCTable = Args.hasArg(OPT_fsanitize_coverage_pc_table); 842 Opts.SanitizeCoverageStackDepth = 843 Args.hasArg(OPT_fsanitize_coverage_stack_depth); 844 Opts.SanitizeMemoryTrackOrigins = 845 getLastArgIntValue(Args, OPT_fsanitize_memory_track_origins_EQ, 0, Diags); 846 Opts.SanitizeMemoryUseAfterDtor = 847 Args.hasFlag(OPT_fsanitize_memory_use_after_dtor, 848 OPT_fno_sanitize_memory_use_after_dtor, 849 false); 850 Opts.SanitizeMinimalRuntime = Args.hasArg(OPT_fsanitize_minimal_runtime); 851 Opts.SanitizeCfiCrossDso = Args.hasArg(OPT_fsanitize_cfi_cross_dso); 852 Opts.SanitizeCfiICallGeneralizePointers = 853 Args.hasArg(OPT_fsanitize_cfi_icall_generalize_pointers); 854 Opts.SanitizeStats = Args.hasArg(OPT_fsanitize_stats); 855 if (Arg *A = Args.getLastArg(OPT_fsanitize_address_use_after_scope, 856 OPT_fno_sanitize_address_use_after_scope)) { 857 Opts.SanitizeAddressUseAfterScope = 858 A->getOption().getID() == OPT_fsanitize_address_use_after_scope; 859 } 860 Opts.SanitizeAddressGlobalsDeadStripping = 861 Args.hasArg(OPT_fsanitize_address_globals_dead_stripping); 862 Opts.SSPBufferSize = 863 getLastArgIntValue(Args, OPT_stack_protector_buffer_size, 8, Diags); 864 Opts.StackRealignment = Args.hasArg(OPT_mstackrealign); 865 if (Arg *A = Args.getLastArg(OPT_mstack_alignment)) { 866 StringRef Val = A->getValue(); 867 unsigned StackAlignment = Opts.StackAlignment; 868 Val.getAsInteger(10, StackAlignment); 869 Opts.StackAlignment = StackAlignment; 870 } 871 872 if (Arg *A = Args.getLastArg(OPT_mstack_probe_size)) { 873 StringRef Val = A->getValue(); 874 unsigned StackProbeSize = Opts.StackProbeSize; 875 Val.getAsInteger(0, StackProbeSize); 876 Opts.StackProbeSize = StackProbeSize; 877 } 878 879 if (Arg *A = Args.getLastArg(OPT_fobjc_dispatch_method_EQ)) { 880 StringRef Name = A->getValue(); 881 unsigned Method = llvm::StringSwitch<unsigned>(Name) 882 .Case("legacy", CodeGenOptions::Legacy) 883 .Case("non-legacy", CodeGenOptions::NonLegacy) 884 .Case("mixed", CodeGenOptions::Mixed) 885 .Default(~0U); 886 if (Method == ~0U) { 887 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Name; 888 Success = false; 889 } else { 890 Opts.setObjCDispatchMethod( 891 static_cast<CodeGenOptions::ObjCDispatchMethodKind>(Method)); 892 } 893 } 894 895 Opts.EmulatedTLS = 896 Args.hasFlag(OPT_femulated_tls, OPT_fno_emulated_tls, false); 897 898 if (Arg *A = Args.getLastArg(OPT_ftlsmodel_EQ)) { 899 StringRef Name = A->getValue(); 900 unsigned Model = llvm::StringSwitch<unsigned>(Name) 901 .Case("global-dynamic", CodeGenOptions::GeneralDynamicTLSModel) 902 .Case("local-dynamic", CodeGenOptions::LocalDynamicTLSModel) 903 .Case("initial-exec", CodeGenOptions::InitialExecTLSModel) 904 .Case("local-exec", CodeGenOptions::LocalExecTLSModel) 905 .Default(~0U); 906 if (Model == ~0U) { 907 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Name; 908 Success = false; 909 } else { 910 Opts.setDefaultTLSModel(static_cast<CodeGenOptions::TLSModel>(Model)); 911 } 912 } 913 914 if (Arg *A = Args.getLastArg(OPT_fdenormal_fp_math_EQ)) { 915 StringRef Val = A->getValue(); 916 if (Val == "ieee") 917 Opts.FPDenormalMode = "ieee"; 918 else if (Val == "preserve-sign") 919 Opts.FPDenormalMode = "preserve-sign"; 920 else if (Val == "positive-zero") 921 Opts.FPDenormalMode = "positive-zero"; 922 else 923 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Val; 924 } 925 926 if (Arg *A = Args.getLastArg(OPT_fpcc_struct_return, OPT_freg_struct_return)) { 927 if (A->getOption().matches(OPT_fpcc_struct_return)) { 928 Opts.setStructReturnConvention(CodeGenOptions::SRCK_OnStack); 929 } else { 930 assert(A->getOption().matches(OPT_freg_struct_return)); 931 Opts.setStructReturnConvention(CodeGenOptions::SRCK_InRegs); 932 } 933 } 934 935 Opts.DependentLibraries = Args.getAllArgValues(OPT_dependent_lib); 936 Opts.LinkerOptions = Args.getAllArgValues(OPT_linker_option); 937 bool NeedLocTracking = false; 938 939 Opts.OptRecordFile = Args.getLastArgValue(OPT_opt_record_file); 940 if (!Opts.OptRecordFile.empty()) 941 NeedLocTracking = true; 942 943 if (Arg *A = Args.getLastArg(OPT_Rpass_EQ)) { 944 Opts.OptimizationRemarkPattern = 945 GenerateOptimizationRemarkRegex(Diags, Args, A); 946 NeedLocTracking = true; 947 } 948 949 if (Arg *A = Args.getLastArg(OPT_Rpass_missed_EQ)) { 950 Opts.OptimizationRemarkMissedPattern = 951 GenerateOptimizationRemarkRegex(Diags, Args, A); 952 NeedLocTracking = true; 953 } 954 955 if (Arg *A = Args.getLastArg(OPT_Rpass_analysis_EQ)) { 956 Opts.OptimizationRemarkAnalysisPattern = 957 GenerateOptimizationRemarkRegex(Diags, Args, A); 958 NeedLocTracking = true; 959 } 960 961 Opts.DiagnosticsWithHotness = 962 Args.hasArg(options::OPT_fdiagnostics_show_hotness); 963 bool UsingSampleProfile = !Opts.SampleProfileFile.empty(); 964 bool UsingProfile = UsingSampleProfile || 965 (Opts.getProfileUse() != CodeGenOptions::ProfileNone); 966 967 if (Opts.DiagnosticsWithHotness && !UsingProfile) 968 Diags.Report(diag::warn_drv_diagnostics_hotness_requires_pgo) 969 << "-fdiagnostics-show-hotness"; 970 971 Opts.DiagnosticsHotnessThreshold = getLastArgUInt64Value( 972 Args, options::OPT_fdiagnostics_hotness_threshold_EQ, 0); 973 if (Opts.DiagnosticsHotnessThreshold > 0 && !UsingProfile) 974 Diags.Report(diag::warn_drv_diagnostics_hotness_requires_pgo) 975 << "-fdiagnostics-hotness-threshold="; 976 977 // If the user requested to use a sample profile for PGO, then the 978 // backend will need to track source location information so the profile 979 // can be incorporated into the IR. 980 if (UsingSampleProfile) 981 NeedLocTracking = true; 982 983 // If the user requested a flag that requires source locations available in 984 // the backend, make sure that the backend tracks source location information. 985 if (NeedLocTracking && Opts.getDebugInfo() == codegenoptions::NoDebugInfo) 986 Opts.setDebugInfo(codegenoptions::LocTrackingOnly); 987 988 Opts.RewriteMapFiles = Args.getAllArgValues(OPT_frewrite_map_file); 989 990 // Parse -fsanitize-recover= arguments. 991 // FIXME: Report unrecoverable sanitizers incorrectly specified here. 992 parseSanitizerKinds("-fsanitize-recover=", 993 Args.getAllArgValues(OPT_fsanitize_recover_EQ), Diags, 994 Opts.SanitizeRecover); 995 parseSanitizerKinds("-fsanitize-trap=", 996 Args.getAllArgValues(OPT_fsanitize_trap_EQ), Diags, 997 Opts.SanitizeTrap); 998 999 Opts.CudaGpuBinaryFileNames = 1000 Args.getAllArgValues(OPT_fcuda_include_gpubinary); 1001 1002 Opts.Backchain = Args.hasArg(OPT_mbackchain); 1003 1004 Opts.EmitCheckPathComponentsToStrip = getLastArgIntValue( 1005 Args, OPT_fsanitize_undefined_strip_path_components_EQ, 0, Diags); 1006 1007 return Success; 1008 } 1009 1010 static void ParseDependencyOutputArgs(DependencyOutputOptions &Opts, 1011 ArgList &Args) { 1012 using namespace options; 1013 Opts.OutputFile = Args.getLastArgValue(OPT_dependency_file); 1014 Opts.Targets = Args.getAllArgValues(OPT_MT); 1015 Opts.IncludeSystemHeaders = Args.hasArg(OPT_sys_header_deps); 1016 Opts.IncludeModuleFiles = Args.hasArg(OPT_module_file_deps); 1017 Opts.UsePhonyTargets = Args.hasArg(OPT_MP); 1018 Opts.ShowHeaderIncludes = Args.hasArg(OPT_H); 1019 Opts.HeaderIncludeOutputFile = Args.getLastArgValue(OPT_header_include_file); 1020 Opts.AddMissingHeaderDeps = Args.hasArg(OPT_MG); 1021 Opts.PrintShowIncludes = Args.hasArg(OPT_show_includes); 1022 Opts.DOTOutputFile = Args.getLastArgValue(OPT_dependency_dot); 1023 Opts.ModuleDependencyOutputDir = 1024 Args.getLastArgValue(OPT_module_dependency_dir); 1025 if (Args.hasArg(OPT_MV)) 1026 Opts.OutputFormat = DependencyOutputFormat::NMake; 1027 // Add sanitizer blacklists as extra dependencies. 1028 // They won't be discovered by the regular preprocessor, so 1029 // we let make / ninja to know about this implicit dependency. 1030 Opts.ExtraDeps = Args.getAllArgValues(OPT_fdepfile_entry); 1031 // Only the -fmodule-file=<file> form. 1032 for (const Arg *A : Args.filtered(OPT_fmodule_file)) { 1033 StringRef Val = A->getValue(); 1034 if (Val.find('=') == StringRef::npos) 1035 Opts.ExtraDeps.push_back(Val); 1036 } 1037 } 1038 1039 static bool parseShowColorsArgs(const ArgList &Args, bool DefaultColor) { 1040 // Color diagnostics default to auto ("on" if terminal supports) in the driver 1041 // but default to off in cc1, needing an explicit OPT_fdiagnostics_color. 1042 // Support both clang's -f[no-]color-diagnostics and gcc's 1043 // -f[no-]diagnostics-colors[=never|always|auto]. 1044 enum { 1045 Colors_On, 1046 Colors_Off, 1047 Colors_Auto 1048 } ShowColors = DefaultColor ? Colors_Auto : Colors_Off; 1049 for (Arg *A : Args) { 1050 const Option &O = A->getOption(); 1051 if (O.matches(options::OPT_fcolor_diagnostics) || 1052 O.matches(options::OPT_fdiagnostics_color)) { 1053 ShowColors = Colors_On; 1054 } else if (O.matches(options::OPT_fno_color_diagnostics) || 1055 O.matches(options::OPT_fno_diagnostics_color)) { 1056 ShowColors = Colors_Off; 1057 } else if (O.matches(options::OPT_fdiagnostics_color_EQ)) { 1058 StringRef Value(A->getValue()); 1059 if (Value == "always") 1060 ShowColors = Colors_On; 1061 else if (Value == "never") 1062 ShowColors = Colors_Off; 1063 else if (Value == "auto") 1064 ShowColors = Colors_Auto; 1065 } 1066 } 1067 return ShowColors == Colors_On || 1068 (ShowColors == Colors_Auto && 1069 llvm::sys::Process::StandardErrHasColors()); 1070 } 1071 1072 bool clang::ParseDiagnosticArgs(DiagnosticOptions &Opts, ArgList &Args, 1073 DiagnosticsEngine *Diags, 1074 bool DefaultDiagColor, bool DefaultShowOpt) { 1075 using namespace options; 1076 bool Success = true; 1077 1078 Opts.DiagnosticLogFile = Args.getLastArgValue(OPT_diagnostic_log_file); 1079 if (Arg *A = 1080 Args.getLastArg(OPT_diagnostic_serialized_file, OPT__serialize_diags)) 1081 Opts.DiagnosticSerializationFile = A->getValue(); 1082 Opts.IgnoreWarnings = Args.hasArg(OPT_w); 1083 Opts.NoRewriteMacros = Args.hasArg(OPT_Wno_rewrite_macros); 1084 Opts.Pedantic = Args.hasArg(OPT_pedantic); 1085 Opts.PedanticErrors = Args.hasArg(OPT_pedantic_errors); 1086 Opts.ShowCarets = !Args.hasArg(OPT_fno_caret_diagnostics); 1087 Opts.ShowColors = parseShowColorsArgs(Args, DefaultDiagColor); 1088 Opts.ShowColumn = Args.hasFlag(OPT_fshow_column, 1089 OPT_fno_show_column, 1090 /*Default=*/true); 1091 Opts.ShowFixits = !Args.hasArg(OPT_fno_diagnostics_fixit_info); 1092 Opts.ShowLocation = !Args.hasArg(OPT_fno_show_source_location); 1093 Opts.AbsolutePath = Args.hasArg(OPT_fdiagnostics_absolute_paths); 1094 Opts.ShowOptionNames = 1095 Args.hasFlag(OPT_fdiagnostics_show_option, 1096 OPT_fno_diagnostics_show_option, DefaultShowOpt); 1097 1098 llvm::sys::Process::UseANSIEscapeCodes(Args.hasArg(OPT_fansi_escape_codes)); 1099 1100 // Default behavior is to not to show note include stacks. 1101 Opts.ShowNoteIncludeStack = false; 1102 if (Arg *A = Args.getLastArg(OPT_fdiagnostics_show_note_include_stack, 1103 OPT_fno_diagnostics_show_note_include_stack)) 1104 if (A->getOption().matches(OPT_fdiagnostics_show_note_include_stack)) 1105 Opts.ShowNoteIncludeStack = true; 1106 1107 StringRef ShowOverloads = 1108 Args.getLastArgValue(OPT_fshow_overloads_EQ, "all"); 1109 if (ShowOverloads == "best") 1110 Opts.setShowOverloads(Ovl_Best); 1111 else if (ShowOverloads == "all") 1112 Opts.setShowOverloads(Ovl_All); 1113 else { 1114 Success = false; 1115 if (Diags) 1116 Diags->Report(diag::err_drv_invalid_value) 1117 << Args.getLastArg(OPT_fshow_overloads_EQ)->getAsString(Args) 1118 << ShowOverloads; 1119 } 1120 1121 StringRef ShowCategory = 1122 Args.getLastArgValue(OPT_fdiagnostics_show_category, "none"); 1123 if (ShowCategory == "none") 1124 Opts.ShowCategories = 0; 1125 else if (ShowCategory == "id") 1126 Opts.ShowCategories = 1; 1127 else if (ShowCategory == "name") 1128 Opts.ShowCategories = 2; 1129 else { 1130 Success = false; 1131 if (Diags) 1132 Diags->Report(diag::err_drv_invalid_value) 1133 << Args.getLastArg(OPT_fdiagnostics_show_category)->getAsString(Args) 1134 << ShowCategory; 1135 } 1136 1137 StringRef Format = 1138 Args.getLastArgValue(OPT_fdiagnostics_format, "clang"); 1139 if (Format == "clang") 1140 Opts.setFormat(DiagnosticOptions::Clang); 1141 else if (Format == "msvc") 1142 Opts.setFormat(DiagnosticOptions::MSVC); 1143 else if (Format == "msvc-fallback") { 1144 Opts.setFormat(DiagnosticOptions::MSVC); 1145 Opts.CLFallbackMode = true; 1146 } else if (Format == "vi") 1147 Opts.setFormat(DiagnosticOptions::Vi); 1148 else { 1149 Success = false; 1150 if (Diags) 1151 Diags->Report(diag::err_drv_invalid_value) 1152 << Args.getLastArg(OPT_fdiagnostics_format)->getAsString(Args) 1153 << Format; 1154 } 1155 1156 Opts.ShowSourceRanges = Args.hasArg(OPT_fdiagnostics_print_source_range_info); 1157 Opts.ShowParseableFixits = Args.hasArg(OPT_fdiagnostics_parseable_fixits); 1158 Opts.ShowPresumedLoc = !Args.hasArg(OPT_fno_diagnostics_use_presumed_location); 1159 Opts.VerifyDiagnostics = Args.hasArg(OPT_verify); 1160 DiagnosticLevelMask DiagMask = DiagnosticLevelMask::None; 1161 Success &= parseDiagnosticLevelMask("-verify-ignore-unexpected=", 1162 Args.getAllArgValues(OPT_verify_ignore_unexpected_EQ), 1163 Diags, DiagMask); 1164 if (Args.hasArg(OPT_verify_ignore_unexpected)) 1165 DiagMask = DiagnosticLevelMask::All; 1166 Opts.setVerifyIgnoreUnexpected(DiagMask); 1167 Opts.ElideType = !Args.hasArg(OPT_fno_elide_type); 1168 Opts.ShowTemplateTree = Args.hasArg(OPT_fdiagnostics_show_template_tree); 1169 Opts.ErrorLimit = getLastArgIntValue(Args, OPT_ferror_limit, 0, Diags); 1170 Opts.MacroBacktraceLimit = 1171 getLastArgIntValue(Args, OPT_fmacro_backtrace_limit, 1172 DiagnosticOptions::DefaultMacroBacktraceLimit, Diags); 1173 Opts.TemplateBacktraceLimit = getLastArgIntValue( 1174 Args, OPT_ftemplate_backtrace_limit, 1175 DiagnosticOptions::DefaultTemplateBacktraceLimit, Diags); 1176 Opts.ConstexprBacktraceLimit = getLastArgIntValue( 1177 Args, OPT_fconstexpr_backtrace_limit, 1178 DiagnosticOptions::DefaultConstexprBacktraceLimit, Diags); 1179 Opts.SpellCheckingLimit = getLastArgIntValue( 1180 Args, OPT_fspell_checking_limit, 1181 DiagnosticOptions::DefaultSpellCheckingLimit, Diags); 1182 Opts.SnippetLineLimit = getLastArgIntValue( 1183 Args, OPT_fcaret_diagnostics_max_lines, 1184 DiagnosticOptions::DefaultSnippetLineLimit, Diags); 1185 Opts.TabStop = getLastArgIntValue(Args, OPT_ftabstop, 1186 DiagnosticOptions::DefaultTabStop, Diags); 1187 if (Opts.TabStop == 0 || Opts.TabStop > DiagnosticOptions::MaxTabStop) { 1188 Opts.TabStop = DiagnosticOptions::DefaultTabStop; 1189 if (Diags) 1190 Diags->Report(diag::warn_ignoring_ftabstop_value) 1191 << Opts.TabStop << DiagnosticOptions::DefaultTabStop; 1192 } 1193 Opts.MessageLength = getLastArgIntValue(Args, OPT_fmessage_length, 0, Diags); 1194 addDiagnosticArgs(Args, OPT_W_Group, OPT_W_value_Group, Opts.Warnings); 1195 addDiagnosticArgs(Args, OPT_R_Group, OPT_R_value_Group, Opts.Remarks); 1196 1197 return Success; 1198 } 1199 1200 static void ParseFileSystemArgs(FileSystemOptions &Opts, ArgList &Args) { 1201 Opts.WorkingDir = Args.getLastArgValue(OPT_working_directory); 1202 } 1203 1204 /// Parse the argument to the -ftest-module-file-extension 1205 /// command-line argument. 1206 /// 1207 /// \returns true on error, false on success. 1208 static bool parseTestModuleFileExtensionArg(StringRef Arg, 1209 std::string &BlockName, 1210 unsigned &MajorVersion, 1211 unsigned &MinorVersion, 1212 bool &Hashed, 1213 std::string &UserInfo) { 1214 SmallVector<StringRef, 5> Args; 1215 Arg.split(Args, ':', 5); 1216 if (Args.size() < 5) 1217 return true; 1218 1219 BlockName = Args[0]; 1220 if (Args[1].getAsInteger(10, MajorVersion)) return true; 1221 if (Args[2].getAsInteger(10, MinorVersion)) return true; 1222 if (Args[3].getAsInteger(2, Hashed)) return true; 1223 if (Args.size() > 4) 1224 UserInfo = Args[4]; 1225 return false; 1226 } 1227 1228 static InputKind ParseFrontendArgs(FrontendOptions &Opts, ArgList &Args, 1229 DiagnosticsEngine &Diags, 1230 bool &IsHeaderFile) { 1231 using namespace options; 1232 Opts.ProgramAction = frontend::ParseSyntaxOnly; 1233 if (const Arg *A = Args.getLastArg(OPT_Action_Group)) { 1234 switch (A->getOption().getID()) { 1235 default: 1236 llvm_unreachable("Invalid option in group!"); 1237 case OPT_ast_list: 1238 Opts.ProgramAction = frontend::ASTDeclList; break; 1239 case OPT_ast_dump: 1240 case OPT_ast_dump_all: 1241 case OPT_ast_dump_lookups: 1242 Opts.ProgramAction = frontend::ASTDump; break; 1243 case OPT_ast_print: 1244 Opts.ProgramAction = frontend::ASTPrint; break; 1245 case OPT_ast_view: 1246 Opts.ProgramAction = frontend::ASTView; break; 1247 case OPT_dump_raw_tokens: 1248 Opts.ProgramAction = frontend::DumpRawTokens; break; 1249 case OPT_dump_tokens: 1250 Opts.ProgramAction = frontend::DumpTokens; break; 1251 case OPT_S: 1252 Opts.ProgramAction = frontend::EmitAssembly; break; 1253 case OPT_emit_llvm_bc: 1254 Opts.ProgramAction = frontend::EmitBC; break; 1255 case OPT_emit_html: 1256 Opts.ProgramAction = frontend::EmitHTML; break; 1257 case OPT_emit_llvm: 1258 Opts.ProgramAction = frontend::EmitLLVM; break; 1259 case OPT_emit_llvm_only: 1260 Opts.ProgramAction = frontend::EmitLLVMOnly; break; 1261 case OPT_emit_codegen_only: 1262 Opts.ProgramAction = frontend::EmitCodeGenOnly; break; 1263 case OPT_emit_obj: 1264 Opts.ProgramAction = frontend::EmitObj; break; 1265 case OPT_fixit_EQ: 1266 Opts.FixItSuffix = A->getValue(); 1267 // fall-through! 1268 case OPT_fixit: 1269 Opts.ProgramAction = frontend::FixIt; break; 1270 case OPT_emit_module: 1271 Opts.ProgramAction = frontend::GenerateModule; break; 1272 case OPT_emit_module_interface: 1273 Opts.ProgramAction = frontend::GenerateModuleInterface; break; 1274 case OPT_emit_pch: 1275 Opts.ProgramAction = frontend::GeneratePCH; break; 1276 case OPT_emit_pth: 1277 Opts.ProgramAction = frontend::GeneratePTH; break; 1278 case OPT_init_only: 1279 Opts.ProgramAction = frontend::InitOnly; break; 1280 case OPT_fsyntax_only: 1281 Opts.ProgramAction = frontend::ParseSyntaxOnly; break; 1282 case OPT_module_file_info: 1283 Opts.ProgramAction = frontend::ModuleFileInfo; break; 1284 case OPT_verify_pch: 1285 Opts.ProgramAction = frontend::VerifyPCH; break; 1286 case OPT_print_decl_contexts: 1287 Opts.ProgramAction = frontend::PrintDeclContext; break; 1288 case OPT_print_preamble: 1289 Opts.ProgramAction = frontend::PrintPreamble; break; 1290 case OPT_E: 1291 Opts.ProgramAction = frontend::PrintPreprocessedInput; break; 1292 case OPT_rewrite_macros: 1293 Opts.ProgramAction = frontend::RewriteMacros; break; 1294 case OPT_rewrite_objc: 1295 Opts.ProgramAction = frontend::RewriteObjC; break; 1296 case OPT_rewrite_test: 1297 Opts.ProgramAction = frontend::RewriteTest; break; 1298 case OPT_analyze: 1299 Opts.ProgramAction = frontend::RunAnalysis; break; 1300 case OPT_migrate: 1301 Opts.ProgramAction = frontend::MigrateSource; break; 1302 case OPT_Eonly: 1303 Opts.ProgramAction = frontend::RunPreprocessorOnly; break; 1304 } 1305 } 1306 1307 if (const Arg* A = Args.getLastArg(OPT_plugin)) { 1308 Opts.Plugins.emplace_back(A->getValue(0)); 1309 Opts.ProgramAction = frontend::PluginAction; 1310 Opts.ActionName = A->getValue(); 1311 } 1312 Opts.AddPluginActions = Args.getAllArgValues(OPT_add_plugin); 1313 for (const Arg *AA : Args.filtered(OPT_plugin_arg)) 1314 Opts.PluginArgs[AA->getValue(0)].emplace_back(AA->getValue(1)); 1315 1316 for (const std::string &Arg : 1317 Args.getAllArgValues(OPT_ftest_module_file_extension_EQ)) { 1318 std::string BlockName; 1319 unsigned MajorVersion; 1320 unsigned MinorVersion; 1321 bool Hashed; 1322 std::string UserInfo; 1323 if (parseTestModuleFileExtensionArg(Arg, BlockName, MajorVersion, 1324 MinorVersion, Hashed, UserInfo)) { 1325 Diags.Report(diag::err_test_module_file_extension_format) << Arg; 1326 1327 continue; 1328 } 1329 1330 // Add the testing module file extension. 1331 Opts.ModuleFileExtensions.push_back( 1332 std::make_shared<TestModuleFileExtension>( 1333 BlockName, MajorVersion, MinorVersion, Hashed, UserInfo)); 1334 } 1335 1336 if (const Arg *A = Args.getLastArg(OPT_code_completion_at)) { 1337 Opts.CodeCompletionAt = 1338 ParsedSourceLocation::FromString(A->getValue()); 1339 if (Opts.CodeCompletionAt.FileName.empty()) 1340 Diags.Report(diag::err_drv_invalid_value) 1341 << A->getAsString(Args) << A->getValue(); 1342 } 1343 Opts.DisableFree = Args.hasArg(OPT_disable_free); 1344 1345 Opts.OutputFile = Args.getLastArgValue(OPT_o); 1346 Opts.Plugins = Args.getAllArgValues(OPT_load); 1347 Opts.RelocatablePCH = Args.hasArg(OPT_relocatable_pch); 1348 Opts.ShowHelp = Args.hasArg(OPT_help); 1349 Opts.ShowStats = Args.hasArg(OPT_print_stats); 1350 Opts.ShowTimers = Args.hasArg(OPT_ftime_report); 1351 Opts.ShowVersion = Args.hasArg(OPT_version); 1352 Opts.ASTMergeFiles = Args.getAllArgValues(OPT_ast_merge); 1353 Opts.LLVMArgs = Args.getAllArgValues(OPT_mllvm); 1354 Opts.FixWhatYouCan = Args.hasArg(OPT_fix_what_you_can); 1355 Opts.FixOnlyWarnings = Args.hasArg(OPT_fix_only_warnings); 1356 Opts.FixAndRecompile = Args.hasArg(OPT_fixit_recompile); 1357 Opts.FixToTemporaries = Args.hasArg(OPT_fixit_to_temp); 1358 Opts.ASTDumpDecls = Args.hasArg(OPT_ast_dump); 1359 Opts.ASTDumpAll = Args.hasArg(OPT_ast_dump_all); 1360 Opts.ASTDumpFilter = Args.getLastArgValue(OPT_ast_dump_filter); 1361 Opts.ASTDumpLookups = Args.hasArg(OPT_ast_dump_lookups); 1362 Opts.UseGlobalModuleIndex = !Args.hasArg(OPT_fno_modules_global_index); 1363 Opts.GenerateGlobalModuleIndex = Opts.UseGlobalModuleIndex; 1364 Opts.ModuleMapFiles = Args.getAllArgValues(OPT_fmodule_map_file); 1365 // Only the -fmodule-file=<file> form. 1366 for (const Arg *A : Args.filtered(OPT_fmodule_file)) { 1367 StringRef Val = A->getValue(); 1368 if (Val.find('=') == StringRef::npos) 1369 Opts.ModuleFiles.push_back(Val); 1370 } 1371 Opts.ModulesEmbedFiles = Args.getAllArgValues(OPT_fmodules_embed_file_EQ); 1372 Opts.ModulesEmbedAllFiles = Args.hasArg(OPT_fmodules_embed_all_files); 1373 Opts.IncludeTimestamps = !Args.hasArg(OPT_fno_pch_timestamp); 1374 1375 Opts.CodeCompleteOpts.IncludeMacros 1376 = Args.hasArg(OPT_code_completion_macros); 1377 Opts.CodeCompleteOpts.IncludeCodePatterns 1378 = Args.hasArg(OPT_code_completion_patterns); 1379 Opts.CodeCompleteOpts.IncludeGlobals 1380 = !Args.hasArg(OPT_no_code_completion_globals); 1381 Opts.CodeCompleteOpts.IncludeBriefComments 1382 = Args.hasArg(OPT_code_completion_brief_comments); 1383 1384 Opts.OverrideRecordLayoutsFile 1385 = Args.getLastArgValue(OPT_foverride_record_layout_EQ); 1386 Opts.AuxTriple = 1387 llvm::Triple::normalize(Args.getLastArgValue(OPT_aux_triple)); 1388 Opts.FindPchSource = Args.getLastArgValue(OPT_find_pch_source_EQ); 1389 Opts.StatsFile = Args.getLastArgValue(OPT_stats_file); 1390 1391 if (const Arg *A = Args.getLastArg(OPT_arcmt_check, 1392 OPT_arcmt_modify, 1393 OPT_arcmt_migrate)) { 1394 switch (A->getOption().getID()) { 1395 default: 1396 llvm_unreachable("missed a case"); 1397 case OPT_arcmt_check: 1398 Opts.ARCMTAction = FrontendOptions::ARCMT_Check; 1399 break; 1400 case OPT_arcmt_modify: 1401 Opts.ARCMTAction = FrontendOptions::ARCMT_Modify; 1402 break; 1403 case OPT_arcmt_migrate: 1404 Opts.ARCMTAction = FrontendOptions::ARCMT_Migrate; 1405 break; 1406 } 1407 } 1408 Opts.MTMigrateDir = Args.getLastArgValue(OPT_mt_migrate_directory); 1409 Opts.ARCMTMigrateReportOut 1410 = Args.getLastArgValue(OPT_arcmt_migrate_report_output); 1411 Opts.ARCMTMigrateEmitARCErrors 1412 = Args.hasArg(OPT_arcmt_migrate_emit_arc_errors); 1413 1414 if (Args.hasArg(OPT_objcmt_migrate_literals)) 1415 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_Literals; 1416 if (Args.hasArg(OPT_objcmt_migrate_subscripting)) 1417 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_Subscripting; 1418 if (Args.hasArg(OPT_objcmt_migrate_property_dot_syntax)) 1419 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_PropertyDotSyntax; 1420 if (Args.hasArg(OPT_objcmt_migrate_property)) 1421 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_Property; 1422 if (Args.hasArg(OPT_objcmt_migrate_readonly_property)) 1423 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_ReadonlyProperty; 1424 if (Args.hasArg(OPT_objcmt_migrate_readwrite_property)) 1425 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_ReadwriteProperty; 1426 if (Args.hasArg(OPT_objcmt_migrate_annotation)) 1427 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_Annotation; 1428 if (Args.hasArg(OPT_objcmt_returns_innerpointer_property)) 1429 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_ReturnsInnerPointerProperty; 1430 if (Args.hasArg(OPT_objcmt_migrate_instancetype)) 1431 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_Instancetype; 1432 if (Args.hasArg(OPT_objcmt_migrate_nsmacros)) 1433 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_NsMacros; 1434 if (Args.hasArg(OPT_objcmt_migrate_protocol_conformance)) 1435 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_ProtocolConformance; 1436 if (Args.hasArg(OPT_objcmt_atomic_property)) 1437 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_AtomicProperty; 1438 if (Args.hasArg(OPT_objcmt_ns_nonatomic_iosonly)) 1439 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_NsAtomicIOSOnlyProperty; 1440 if (Args.hasArg(OPT_objcmt_migrate_designated_init)) 1441 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_DesignatedInitializer; 1442 if (Args.hasArg(OPT_objcmt_migrate_all)) 1443 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_MigrateDecls; 1444 1445 Opts.ObjCMTWhiteListPath = Args.getLastArgValue(OPT_objcmt_whitelist_dir_path); 1446 1447 if (Opts.ARCMTAction != FrontendOptions::ARCMT_None && 1448 Opts.ObjCMTAction != FrontendOptions::ObjCMT_None) { 1449 Diags.Report(diag::err_drv_argument_not_allowed_with) 1450 << "ARC migration" << "ObjC migration"; 1451 } 1452 1453 InputKind DashX(InputKind::Unknown); 1454 if (const Arg *A = Args.getLastArg(OPT_x)) { 1455 StringRef XValue = A->getValue(); 1456 1457 // Parse suffixes: '<lang>(-header|[-module-map][-cpp-output])'. 1458 // FIXME: Supporting '<lang>-header-cpp-output' would be useful. 1459 bool Preprocessed = XValue.consume_back("-cpp-output"); 1460 bool ModuleMap = XValue.consume_back("-module-map"); 1461 IsHeaderFile = 1462 !Preprocessed && !ModuleMap && XValue.consume_back("-header"); 1463 1464 // Principal languages. 1465 DashX = llvm::StringSwitch<InputKind>(XValue) 1466 .Case("c", InputKind::C) 1467 .Case("cl", InputKind::OpenCL) 1468 .Case("cuda", InputKind::CUDA) 1469 .Case("c++", InputKind::CXX) 1470 .Case("objective-c", InputKind::ObjC) 1471 .Case("objective-c++", InputKind::ObjCXX) 1472 .Case("renderscript", InputKind::RenderScript) 1473 .Default(InputKind::Unknown); 1474 1475 // "objc[++]-cpp-output" is an acceptable synonym for 1476 // "objective-c[++]-cpp-output". 1477 if (DashX.isUnknown() && Preprocessed && !IsHeaderFile && !ModuleMap) 1478 DashX = llvm::StringSwitch<InputKind>(XValue) 1479 .Case("objc", InputKind::ObjC) 1480 .Case("objc++", InputKind::ObjCXX) 1481 .Default(InputKind::Unknown); 1482 1483 // Some special cases cannot be combined with suffixes. 1484 if (DashX.isUnknown() && !Preprocessed && !ModuleMap && !IsHeaderFile) 1485 DashX = llvm::StringSwitch<InputKind>(XValue) 1486 .Case("cpp-output", InputKind(InputKind::C).getPreprocessed()) 1487 .Case("assembler-with-cpp", InputKind::Asm) 1488 .Cases("ast", "pcm", 1489 InputKind(InputKind::Unknown, InputKind::Precompiled)) 1490 .Case("ir", InputKind::LLVM_IR) 1491 .Default(InputKind::Unknown); 1492 1493 if (DashX.isUnknown()) 1494 Diags.Report(diag::err_drv_invalid_value) 1495 << A->getAsString(Args) << A->getValue(); 1496 1497 if (Preprocessed) 1498 DashX = DashX.getPreprocessed(); 1499 if (ModuleMap) 1500 DashX = DashX.withFormat(InputKind::ModuleMap); 1501 } 1502 1503 // '-' is the default input if none is given. 1504 std::vector<std::string> Inputs = Args.getAllArgValues(OPT_INPUT); 1505 Opts.Inputs.clear(); 1506 if (Inputs.empty()) 1507 Inputs.push_back("-"); 1508 for (unsigned i = 0, e = Inputs.size(); i != e; ++i) { 1509 InputKind IK = DashX; 1510 if (IK.isUnknown()) { 1511 IK = FrontendOptions::getInputKindForExtension( 1512 StringRef(Inputs[i]).rsplit('.').second); 1513 // FIXME: Warn on this? 1514 if (IK.isUnknown()) 1515 IK = InputKind::C; 1516 // FIXME: Remove this hack. 1517 if (i == 0) 1518 DashX = IK; 1519 } 1520 1521 // The -emit-module action implicitly takes a module map. 1522 if (Opts.ProgramAction == frontend::GenerateModule && 1523 IK.getFormat() == InputKind::Source) 1524 IK = IK.withFormat(InputKind::ModuleMap); 1525 1526 Opts.Inputs.emplace_back(std::move(Inputs[i]), IK); 1527 } 1528 1529 return DashX; 1530 } 1531 1532 std::string CompilerInvocation::GetResourcesPath(const char *Argv0, 1533 void *MainAddr) { 1534 std::string ClangExecutable = 1535 llvm::sys::fs::getMainExecutable(Argv0, MainAddr); 1536 StringRef Dir = llvm::sys::path::parent_path(ClangExecutable); 1537 1538 // Compute the path to the resource directory. 1539 StringRef ClangResourceDir(CLANG_RESOURCE_DIR); 1540 SmallString<128> P(Dir); 1541 if (ClangResourceDir != "") 1542 llvm::sys::path::append(P, ClangResourceDir); 1543 else 1544 llvm::sys::path::append(P, "..", Twine("lib") + CLANG_LIBDIR_SUFFIX, 1545 "clang", CLANG_VERSION_STRING); 1546 1547 return P.str(); 1548 } 1549 1550 static void ParseHeaderSearchArgs(HeaderSearchOptions &Opts, ArgList &Args, 1551 const std::string &WorkingDir) { 1552 using namespace options; 1553 Opts.Sysroot = Args.getLastArgValue(OPT_isysroot, "/"); 1554 Opts.Verbose = Args.hasArg(OPT_v); 1555 Opts.UseBuiltinIncludes = !Args.hasArg(OPT_nobuiltininc); 1556 Opts.UseStandardSystemIncludes = !Args.hasArg(OPT_nostdsysteminc); 1557 Opts.UseStandardCXXIncludes = !Args.hasArg(OPT_nostdincxx); 1558 if (const Arg *A = Args.getLastArg(OPT_stdlib_EQ)) 1559 Opts.UseLibcxx = (strcmp(A->getValue(), "libc++") == 0); 1560 Opts.ResourceDir = Args.getLastArgValue(OPT_resource_dir); 1561 1562 // Canonicalize -fmodules-cache-path before storing it. 1563 SmallString<128> P(Args.getLastArgValue(OPT_fmodules_cache_path)); 1564 if (!(P.empty() || llvm::sys::path::is_absolute(P))) { 1565 if (WorkingDir.empty()) 1566 llvm::sys::fs::make_absolute(P); 1567 else 1568 llvm::sys::fs::make_absolute(WorkingDir, P); 1569 } 1570 llvm::sys::path::remove_dots(P); 1571 Opts.ModuleCachePath = P.str(); 1572 1573 Opts.ModuleUserBuildPath = Args.getLastArgValue(OPT_fmodules_user_build_path); 1574 // Only the -fmodule-file=<name>=<file> form. 1575 for (const Arg *A : Args.filtered(OPT_fmodule_file)) { 1576 StringRef Val = A->getValue(); 1577 if (Val.find('=') != StringRef::npos) 1578 Opts.PrebuiltModuleFiles.insert(Val.split('=')); 1579 } 1580 for (const Arg *A : Args.filtered(OPT_fprebuilt_module_path)) 1581 Opts.AddPrebuiltModulePath(A->getValue()); 1582 Opts.DisableModuleHash = Args.hasArg(OPT_fdisable_module_hash); 1583 Opts.ModulesHashContent = Args.hasArg(OPT_fmodules_hash_content); 1584 Opts.ModulesValidateDiagnosticOptions = 1585 !Args.hasArg(OPT_fmodules_disable_diagnostic_validation); 1586 Opts.ImplicitModuleMaps = Args.hasArg(OPT_fimplicit_module_maps); 1587 Opts.ModuleMapFileHomeIsCwd = Args.hasArg(OPT_fmodule_map_file_home_is_cwd); 1588 Opts.ModuleCachePruneInterval = 1589 getLastArgIntValue(Args, OPT_fmodules_prune_interval, 7 * 24 * 60 * 60); 1590 Opts.ModuleCachePruneAfter = 1591 getLastArgIntValue(Args, OPT_fmodules_prune_after, 31 * 24 * 60 * 60); 1592 Opts.ModulesValidateOncePerBuildSession = 1593 Args.hasArg(OPT_fmodules_validate_once_per_build_session); 1594 Opts.BuildSessionTimestamp = 1595 getLastArgUInt64Value(Args, OPT_fbuild_session_timestamp, 0); 1596 Opts.ModulesValidateSystemHeaders = 1597 Args.hasArg(OPT_fmodules_validate_system_headers); 1598 if (const Arg *A = Args.getLastArg(OPT_fmodule_format_EQ)) 1599 Opts.ModuleFormat = A->getValue(); 1600 1601 for (const Arg *A : Args.filtered(OPT_fmodules_ignore_macro)) { 1602 StringRef MacroDef = A->getValue(); 1603 Opts.ModulesIgnoreMacros.insert( 1604 llvm::CachedHashString(MacroDef.split('=').first)); 1605 } 1606 1607 // Add -I..., -F..., and -index-header-map options in order. 1608 bool IsIndexHeaderMap = false; 1609 bool IsSysrootSpecified = 1610 Args.hasArg(OPT__sysroot_EQ) || Args.hasArg(OPT_isysroot); 1611 for (const Arg *A : Args.filtered(OPT_I, OPT_F, OPT_index_header_map)) { 1612 if (A->getOption().matches(OPT_index_header_map)) { 1613 // -index-header-map applies to the next -I or -F. 1614 IsIndexHeaderMap = true; 1615 continue; 1616 } 1617 1618 frontend::IncludeDirGroup Group = 1619 IsIndexHeaderMap ? frontend::IndexHeaderMap : frontend::Angled; 1620 1621 bool IsFramework = A->getOption().matches(OPT_F); 1622 std::string Path = A->getValue(); 1623 1624 if (IsSysrootSpecified && !IsFramework && A->getValue()[0] == '=') { 1625 SmallString<32> Buffer; 1626 llvm::sys::path::append(Buffer, Opts.Sysroot, 1627 llvm::StringRef(A->getValue()).substr(1)); 1628 Path = Buffer.str(); 1629 } 1630 1631 Opts.AddPath(Path, Group, IsFramework, 1632 /*IgnoreSysroot*/ true); 1633 IsIndexHeaderMap = false; 1634 } 1635 1636 // Add -iprefix/-iwithprefix/-iwithprefixbefore options. 1637 StringRef Prefix = ""; // FIXME: This isn't the correct default prefix. 1638 for (const Arg *A : 1639 Args.filtered(OPT_iprefix, OPT_iwithprefix, OPT_iwithprefixbefore)) { 1640 if (A->getOption().matches(OPT_iprefix)) 1641 Prefix = A->getValue(); 1642 else if (A->getOption().matches(OPT_iwithprefix)) 1643 Opts.AddPath(Prefix.str() + A->getValue(), frontend::After, false, true); 1644 else 1645 Opts.AddPath(Prefix.str() + A->getValue(), frontend::Angled, false, true); 1646 } 1647 1648 for (const Arg *A : Args.filtered(OPT_idirafter)) 1649 Opts.AddPath(A->getValue(), frontend::After, false, true); 1650 for (const Arg *A : Args.filtered(OPT_iquote)) 1651 Opts.AddPath(A->getValue(), frontend::Quoted, false, true); 1652 for (const Arg *A : Args.filtered(OPT_isystem, OPT_iwithsysroot)) 1653 Opts.AddPath(A->getValue(), frontend::System, false, 1654 !A->getOption().matches(OPT_iwithsysroot)); 1655 for (const Arg *A : Args.filtered(OPT_iframework)) 1656 Opts.AddPath(A->getValue(), frontend::System, true, true); 1657 for (const Arg *A : Args.filtered(OPT_iframeworkwithsysroot)) 1658 Opts.AddPath(A->getValue(), frontend::System, /*IsFramework=*/true, 1659 /*IgnoreSysRoot=*/false); 1660 1661 // Add the paths for the various language specific isystem flags. 1662 for (const Arg *A : Args.filtered(OPT_c_isystem)) 1663 Opts.AddPath(A->getValue(), frontend::CSystem, false, true); 1664 for (const Arg *A : Args.filtered(OPT_cxx_isystem)) 1665 Opts.AddPath(A->getValue(), frontend::CXXSystem, false, true); 1666 for (const Arg *A : Args.filtered(OPT_objc_isystem)) 1667 Opts.AddPath(A->getValue(), frontend::ObjCSystem, false,true); 1668 for (const Arg *A : Args.filtered(OPT_objcxx_isystem)) 1669 Opts.AddPath(A->getValue(), frontend::ObjCXXSystem, false, true); 1670 1671 // Add the internal paths from a driver that detects standard include paths. 1672 for (const Arg *A : 1673 Args.filtered(OPT_internal_isystem, OPT_internal_externc_isystem)) { 1674 frontend::IncludeDirGroup Group = frontend::System; 1675 if (A->getOption().matches(OPT_internal_externc_isystem)) 1676 Group = frontend::ExternCSystem; 1677 Opts.AddPath(A->getValue(), Group, false, true); 1678 } 1679 1680 // Add the path prefixes which are implicitly treated as being system headers. 1681 for (const Arg *A : 1682 Args.filtered(OPT_system_header_prefix, OPT_no_system_header_prefix)) 1683 Opts.AddSystemHeaderPrefix( 1684 A->getValue(), A->getOption().matches(OPT_system_header_prefix)); 1685 1686 for (const Arg *A : Args.filtered(OPT_ivfsoverlay)) 1687 Opts.AddVFSOverlayFile(A->getValue()); 1688 } 1689 1690 void CompilerInvocation::setLangDefaults(LangOptions &Opts, InputKind IK, 1691 const llvm::Triple &T, 1692 PreprocessorOptions &PPOpts, 1693 LangStandard::Kind LangStd) { 1694 // Set some properties which depend solely on the input kind; it would be nice 1695 // to move these to the language standard, and have the driver resolve the 1696 // input kind + language standard. 1697 // 1698 // FIXME: Perhaps a better model would be for a single source file to have 1699 // multiple language standards (C / C++ std, ObjC std, OpenCL std, OpenMP std) 1700 // simultaneously active? 1701 if (IK.getLanguage() == InputKind::Asm) { 1702 Opts.AsmPreprocessor = 1; 1703 } else if (IK.isObjectiveC()) { 1704 Opts.ObjC1 = Opts.ObjC2 = 1; 1705 } 1706 1707 if (LangStd == LangStandard::lang_unspecified) { 1708 // Based on the base language, pick one. 1709 switch (IK.getLanguage()) { 1710 case InputKind::Unknown: 1711 case InputKind::LLVM_IR: 1712 llvm_unreachable("Invalid input kind!"); 1713 case InputKind::OpenCL: 1714 LangStd = LangStandard::lang_opencl10; 1715 break; 1716 case InputKind::CUDA: 1717 LangStd = LangStandard::lang_cuda; 1718 break; 1719 case InputKind::Asm: 1720 case InputKind::C: 1721 // The PS4 uses C99 as the default C standard. 1722 if (T.isPS4()) 1723 LangStd = LangStandard::lang_gnu99; 1724 else 1725 LangStd = LangStandard::lang_gnu11; 1726 break; 1727 case InputKind::ObjC: 1728 LangStd = LangStandard::lang_gnu11; 1729 break; 1730 case InputKind::CXX: 1731 case InputKind::ObjCXX: 1732 // The PS4 uses C++11 as the default C++ standard. 1733 if (T.isPS4()) 1734 LangStd = LangStandard::lang_gnucxx11; 1735 else 1736 LangStd = LangStandard::lang_gnucxx98; 1737 break; 1738 case InputKind::RenderScript: 1739 LangStd = LangStandard::lang_c99; 1740 break; 1741 } 1742 } 1743 1744 const LangStandard &Std = LangStandard::getLangStandardForKind(LangStd); 1745 Opts.LineComment = Std.hasLineComments(); 1746 Opts.C99 = Std.isC99(); 1747 Opts.C11 = Std.isC11(); 1748 Opts.CPlusPlus = Std.isCPlusPlus(); 1749 Opts.CPlusPlus11 = Std.isCPlusPlus11(); 1750 Opts.CPlusPlus14 = Std.isCPlusPlus14(); 1751 Opts.CPlusPlus17 = Std.isCPlusPlus17(); 1752 Opts.CPlusPlus2a = Std.isCPlusPlus2a(); 1753 Opts.Digraphs = Std.hasDigraphs(); 1754 Opts.GNUMode = Std.isGNUMode(); 1755 Opts.GNUInline = !Opts.C99 && !Opts.CPlusPlus; 1756 Opts.HexFloats = Std.hasHexFloats(); 1757 Opts.ImplicitInt = Std.hasImplicitInt(); 1758 1759 // Set OpenCL Version. 1760 Opts.OpenCL = Std.isOpenCL(); 1761 if (LangStd == LangStandard::lang_opencl10) 1762 Opts.OpenCLVersion = 100; 1763 else if (LangStd == LangStandard::lang_opencl11) 1764 Opts.OpenCLVersion = 110; 1765 else if (LangStd == LangStandard::lang_opencl12) 1766 Opts.OpenCLVersion = 120; 1767 else if (LangStd == LangStandard::lang_opencl20) 1768 Opts.OpenCLVersion = 200; 1769 1770 // OpenCL has some additional defaults. 1771 if (Opts.OpenCL) { 1772 Opts.AltiVec = 0; 1773 Opts.ZVector = 0; 1774 Opts.LaxVectorConversions = 0; 1775 Opts.setDefaultFPContractMode(LangOptions::FPC_On); 1776 Opts.NativeHalfType = 1; 1777 Opts.NativeHalfArgsAndReturns = 1; 1778 // Include default header file for OpenCL. 1779 if (Opts.IncludeDefaultHeader) { 1780 PPOpts.Includes.push_back("opencl-c.h"); 1781 } 1782 } 1783 1784 Opts.CUDA = IK.getLanguage() == InputKind::CUDA; 1785 if (Opts.CUDA) 1786 // Set default FP_CONTRACT to FAST. 1787 Opts.setDefaultFPContractMode(LangOptions::FPC_Fast); 1788 1789 Opts.RenderScript = IK.getLanguage() == InputKind::RenderScript; 1790 if (Opts.RenderScript) { 1791 Opts.NativeHalfType = 1; 1792 Opts.NativeHalfArgsAndReturns = 1; 1793 } 1794 1795 // OpenCL and C++ both have bool, true, false keywords. 1796 Opts.Bool = Opts.OpenCL || Opts.CPlusPlus; 1797 1798 // OpenCL has half keyword 1799 Opts.Half = Opts.OpenCL; 1800 1801 // C++ has wchar_t keyword. 1802 Opts.WChar = Opts.CPlusPlus; 1803 1804 Opts.GNUKeywords = Opts.GNUMode; 1805 Opts.CXXOperatorNames = Opts.CPlusPlus; 1806 1807 Opts.AlignedAllocation = Opts.CPlusPlus17; 1808 1809 Opts.DollarIdents = !Opts.AsmPreprocessor; 1810 } 1811 1812 /// Attempt to parse a visibility value out of the given argument. 1813 static Visibility parseVisibility(Arg *arg, ArgList &args, 1814 DiagnosticsEngine &diags) { 1815 StringRef value = arg->getValue(); 1816 if (value == "default") { 1817 return DefaultVisibility; 1818 } else if (value == "hidden" || value == "internal") { 1819 return HiddenVisibility; 1820 } else if (value == "protected") { 1821 // FIXME: diagnose if target does not support protected visibility 1822 return ProtectedVisibility; 1823 } 1824 1825 diags.Report(diag::err_drv_invalid_value) 1826 << arg->getAsString(args) << value; 1827 return DefaultVisibility; 1828 } 1829 1830 /// Check if input file kind and language standard are compatible. 1831 static bool IsInputCompatibleWithStandard(InputKind IK, 1832 const LangStandard &S) { 1833 switch (IK.getLanguage()) { 1834 case InputKind::Unknown: 1835 case InputKind::LLVM_IR: 1836 llvm_unreachable("should not parse language flags for this input"); 1837 1838 case InputKind::C: 1839 case InputKind::ObjC: 1840 case InputKind::RenderScript: 1841 return S.getLanguage() == InputKind::C; 1842 1843 case InputKind::OpenCL: 1844 return S.getLanguage() == InputKind::OpenCL; 1845 1846 case InputKind::CXX: 1847 case InputKind::ObjCXX: 1848 return S.getLanguage() == InputKind::CXX; 1849 1850 case InputKind::CUDA: 1851 // FIXME: What -std= values should be permitted for CUDA compilations? 1852 return S.getLanguage() == InputKind::CUDA || 1853 S.getLanguage() == InputKind::CXX; 1854 1855 case InputKind::Asm: 1856 // Accept (and ignore) all -std= values. 1857 // FIXME: The -std= value is not ignored; it affects the tokenization 1858 // and preprocessing rules if we're preprocessing this asm input. 1859 return true; 1860 } 1861 1862 llvm_unreachable("unexpected input language"); 1863 } 1864 1865 /// Get language name for given input kind. 1866 static const StringRef GetInputKindName(InputKind IK) { 1867 switch (IK.getLanguage()) { 1868 case InputKind::C: 1869 return "C"; 1870 case InputKind::ObjC: 1871 return "Objective-C"; 1872 case InputKind::CXX: 1873 return "C++"; 1874 case InputKind::ObjCXX: 1875 return "Objective-C++"; 1876 case InputKind::OpenCL: 1877 return "OpenCL"; 1878 case InputKind::CUDA: 1879 return "CUDA"; 1880 case InputKind::RenderScript: 1881 return "RenderScript"; 1882 1883 case InputKind::Asm: 1884 return "Asm"; 1885 case InputKind::LLVM_IR: 1886 return "LLVM IR"; 1887 1888 case InputKind::Unknown: 1889 break; 1890 } 1891 llvm_unreachable("unknown input language"); 1892 } 1893 1894 static void ParseLangArgs(LangOptions &Opts, ArgList &Args, InputKind IK, 1895 const TargetOptions &TargetOpts, 1896 PreprocessorOptions &PPOpts, 1897 DiagnosticsEngine &Diags) { 1898 // FIXME: Cleanup per-file based stuff. 1899 LangStandard::Kind LangStd = LangStandard::lang_unspecified; 1900 if (const Arg *A = Args.getLastArg(OPT_std_EQ)) { 1901 LangStd = llvm::StringSwitch<LangStandard::Kind>(A->getValue()) 1902 #define LANGSTANDARD(id, name, lang, desc, features) \ 1903 .Case(name, LangStandard::lang_##id) 1904 #define LANGSTANDARD_ALIAS(id, alias) \ 1905 .Case(alias, LangStandard::lang_##id) 1906 #include "clang/Frontend/LangStandards.def" 1907 .Default(LangStandard::lang_unspecified); 1908 if (LangStd == LangStandard::lang_unspecified) { 1909 Diags.Report(diag::err_drv_invalid_value) 1910 << A->getAsString(Args) << A->getValue(); 1911 // Report supported standards with short description. 1912 for (unsigned KindValue = 0; 1913 KindValue != LangStandard::lang_unspecified; 1914 ++KindValue) { 1915 const LangStandard &Std = LangStandard::getLangStandardForKind( 1916 static_cast<LangStandard::Kind>(KindValue)); 1917 if (IsInputCompatibleWithStandard(IK, Std)) { 1918 auto Diag = Diags.Report(diag::note_drv_use_standard); 1919 Diag << Std.getName() << Std.getDescription(); 1920 unsigned NumAliases = 0; 1921 #define LANGSTANDARD(id, name, lang, desc, features) 1922 #define LANGSTANDARD_ALIAS(id, alias) \ 1923 if (KindValue == LangStandard::lang_##id) ++NumAliases; 1924 #define LANGSTANDARD_ALIAS_DEPR(id, alias) 1925 #include "clang/Frontend/LangStandards.def" 1926 Diag << NumAliases; 1927 #define LANGSTANDARD(id, name, lang, desc, features) 1928 #define LANGSTANDARD_ALIAS(id, alias) \ 1929 if (KindValue == LangStandard::lang_##id) Diag << alias; 1930 #define LANGSTANDARD_ALIAS_DEPR(id, alias) 1931 #include "clang/Frontend/LangStandards.def" 1932 } 1933 } 1934 } else { 1935 // Valid standard, check to make sure language and standard are 1936 // compatible. 1937 const LangStandard &Std = LangStandard::getLangStandardForKind(LangStd); 1938 if (!IsInputCompatibleWithStandard(IK, Std)) { 1939 Diags.Report(diag::err_drv_argument_not_allowed_with) 1940 << A->getAsString(Args) << GetInputKindName(IK); 1941 } 1942 } 1943 } 1944 1945 // -cl-std only applies for OpenCL language standards. 1946 // Override the -std option in this case. 1947 if (const Arg *A = Args.getLastArg(OPT_cl_std_EQ)) { 1948 LangStandard::Kind OpenCLLangStd 1949 = llvm::StringSwitch<LangStandard::Kind>(A->getValue()) 1950 .Cases("cl", "CL", LangStandard::lang_opencl10) 1951 .Cases("cl1.1", "CL1.1", LangStandard::lang_opencl11) 1952 .Cases("cl1.2", "CL1.2", LangStandard::lang_opencl12) 1953 .Cases("cl2.0", "CL2.0", LangStandard::lang_opencl20) 1954 .Default(LangStandard::lang_unspecified); 1955 1956 if (OpenCLLangStd == LangStandard::lang_unspecified) { 1957 Diags.Report(diag::err_drv_invalid_value) 1958 << A->getAsString(Args) << A->getValue(); 1959 } 1960 else 1961 LangStd = OpenCLLangStd; 1962 } 1963 1964 Opts.IncludeDefaultHeader = Args.hasArg(OPT_finclude_default_header); 1965 1966 llvm::Triple T(TargetOpts.Triple); 1967 CompilerInvocation::setLangDefaults(Opts, IK, T, PPOpts, LangStd); 1968 1969 // -cl-strict-aliasing needs to emit diagnostic in the case where CL > 1.0. 1970 // This option should be deprecated for CL > 1.0 because 1971 // this option was added for compatibility with OpenCL 1.0. 1972 if (Args.getLastArg(OPT_cl_strict_aliasing) 1973 && Opts.OpenCLVersion > 100) { 1974 std::string VerSpec = llvm::to_string(Opts.OpenCLVersion / 100) + 1975 std::string(".") + 1976 llvm::to_string((Opts.OpenCLVersion % 100) / 10); 1977 Diags.Report(diag::warn_option_invalid_ocl_version) 1978 << VerSpec << Args.getLastArg(OPT_cl_strict_aliasing)->getAsString(Args); 1979 } 1980 1981 // We abuse '-f[no-]gnu-keywords' to force overriding all GNU-extension 1982 // keywords. This behavior is provided by GCC's poorly named '-fasm' flag, 1983 // while a subset (the non-C++ GNU keywords) is provided by GCC's 1984 // '-fgnu-keywords'. Clang conflates the two for simplicity under the single 1985 // name, as it doesn't seem a useful distinction. 1986 Opts.GNUKeywords = Args.hasFlag(OPT_fgnu_keywords, OPT_fno_gnu_keywords, 1987 Opts.GNUKeywords); 1988 1989 if (Args.hasArg(OPT_fno_operator_names)) 1990 Opts.CXXOperatorNames = 0; 1991 1992 if (Args.hasArg(OPT_fcuda_is_device)) 1993 Opts.CUDAIsDevice = 1; 1994 1995 if (Args.hasArg(OPT_fcuda_allow_variadic_functions)) 1996 Opts.CUDAAllowVariadicFunctions = 1; 1997 1998 if (Args.hasArg(OPT_fno_cuda_host_device_constexpr)) 1999 Opts.CUDAHostDeviceConstexpr = 0; 2000 2001 if (Opts.CUDAIsDevice && Args.hasArg(OPT_fcuda_flush_denormals_to_zero)) 2002 Opts.CUDADeviceFlushDenormalsToZero = 1; 2003 2004 if (Opts.CUDAIsDevice && Args.hasArg(OPT_fcuda_approx_transcendentals)) 2005 Opts.CUDADeviceApproxTranscendentals = 1; 2006 2007 if (Opts.ObjC1) { 2008 if (Arg *arg = Args.getLastArg(OPT_fobjc_runtime_EQ)) { 2009 StringRef value = arg->getValue(); 2010 if (Opts.ObjCRuntime.tryParse(value)) 2011 Diags.Report(diag::err_drv_unknown_objc_runtime) << value; 2012 } 2013 2014 if (Args.hasArg(OPT_fobjc_gc_only)) 2015 Opts.setGC(LangOptions::GCOnly); 2016 else if (Args.hasArg(OPT_fobjc_gc)) 2017 Opts.setGC(LangOptions::HybridGC); 2018 else if (Args.hasArg(OPT_fobjc_arc)) { 2019 Opts.ObjCAutoRefCount = 1; 2020 if (!Opts.ObjCRuntime.allowsARC()) 2021 Diags.Report(diag::err_arc_unsupported_on_runtime); 2022 } 2023 2024 // ObjCWeakRuntime tracks whether the runtime supports __weak, not 2025 // whether the feature is actually enabled. This is predominantly 2026 // determined by -fobjc-runtime, but we allow it to be overridden 2027 // from the command line for testing purposes. 2028 if (Args.hasArg(OPT_fobjc_runtime_has_weak)) 2029 Opts.ObjCWeakRuntime = 1; 2030 else 2031 Opts.ObjCWeakRuntime = Opts.ObjCRuntime.allowsWeak(); 2032 2033 // ObjCWeak determines whether __weak is actually enabled. 2034 // Note that we allow -fno-objc-weak to disable this even in ARC mode. 2035 if (auto weakArg = Args.getLastArg(OPT_fobjc_weak, OPT_fno_objc_weak)) { 2036 if (!weakArg->getOption().matches(OPT_fobjc_weak)) { 2037 assert(!Opts.ObjCWeak); 2038 } else if (Opts.getGC() != LangOptions::NonGC) { 2039 Diags.Report(diag::err_objc_weak_with_gc); 2040 } else if (!Opts.ObjCWeakRuntime) { 2041 Diags.Report(diag::err_objc_weak_unsupported); 2042 } else { 2043 Opts.ObjCWeak = 1; 2044 } 2045 } else if (Opts.ObjCAutoRefCount) { 2046 Opts.ObjCWeak = Opts.ObjCWeakRuntime; 2047 } 2048 2049 if (Args.hasArg(OPT_fno_objc_infer_related_result_type)) 2050 Opts.ObjCInferRelatedResultType = 0; 2051 2052 if (Args.hasArg(OPT_fobjc_subscripting_legacy_runtime)) 2053 Opts.ObjCSubscriptingLegacyRuntime = 2054 (Opts.ObjCRuntime.getKind() == ObjCRuntime::FragileMacOSX); 2055 } 2056 2057 if (Args.hasArg(OPT_fgnu89_inline)) { 2058 if (Opts.CPlusPlus) 2059 Diags.Report(diag::err_drv_argument_not_allowed_with) 2060 << "-fgnu89-inline" << GetInputKindName(IK); 2061 else 2062 Opts.GNUInline = 1; 2063 } 2064 2065 if (Args.hasArg(OPT_fapple_kext)) { 2066 if (!Opts.CPlusPlus) 2067 Diags.Report(diag::warn_c_kext); 2068 else 2069 Opts.AppleKext = 1; 2070 } 2071 2072 if (Args.hasArg(OPT_print_ivar_layout)) 2073 Opts.ObjCGCBitmapPrint = 1; 2074 if (Args.hasArg(OPT_fno_constant_cfstrings)) 2075 Opts.NoConstantCFStrings = 1; 2076 2077 if (Args.hasArg(OPT_fzvector)) 2078 Opts.ZVector = 1; 2079 2080 if (Args.hasArg(OPT_pthread)) 2081 Opts.POSIXThreads = 1; 2082 2083 // The value-visibility mode defaults to "default". 2084 if (Arg *visOpt = Args.getLastArg(OPT_fvisibility)) { 2085 Opts.setValueVisibilityMode(parseVisibility(visOpt, Args, Diags)); 2086 } else { 2087 Opts.setValueVisibilityMode(DefaultVisibility); 2088 } 2089 2090 // The type-visibility mode defaults to the value-visibility mode. 2091 if (Arg *typeVisOpt = Args.getLastArg(OPT_ftype_visibility)) { 2092 Opts.setTypeVisibilityMode(parseVisibility(typeVisOpt, Args, Diags)); 2093 } else { 2094 Opts.setTypeVisibilityMode(Opts.getValueVisibilityMode()); 2095 } 2096 2097 if (Args.hasArg(OPT_fvisibility_inlines_hidden)) 2098 Opts.InlineVisibilityHidden = 1; 2099 2100 if (Args.hasArg(OPT_ftrapv)) { 2101 Opts.setSignedOverflowBehavior(LangOptions::SOB_Trapping); 2102 // Set the handler, if one is specified. 2103 Opts.OverflowHandler = 2104 Args.getLastArgValue(OPT_ftrapv_handler); 2105 } 2106 else if (Args.hasArg(OPT_fwrapv)) 2107 Opts.setSignedOverflowBehavior(LangOptions::SOB_Defined); 2108 2109 Opts.MSVCCompat = Args.hasArg(OPT_fms_compatibility); 2110 Opts.MicrosoftExt = Opts.MSVCCompat || Args.hasArg(OPT_fms_extensions); 2111 Opts.AsmBlocks = Args.hasArg(OPT_fasm_blocks) || Opts.MicrosoftExt; 2112 Opts.MSCompatibilityVersion = 0; 2113 if (const Arg *A = Args.getLastArg(OPT_fms_compatibility_version)) { 2114 VersionTuple VT; 2115 if (VT.tryParse(A->getValue())) 2116 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) 2117 << A->getValue(); 2118 Opts.MSCompatibilityVersion = VT.getMajor() * 10000000 + 2119 VT.getMinor().getValueOr(0) * 100000 + 2120 VT.getSubminor().getValueOr(0); 2121 } 2122 2123 // Mimicing gcc's behavior, trigraphs are only enabled if -trigraphs 2124 // is specified, or -std is set to a conforming mode. 2125 // Trigraphs are disabled by default in c++1z onwards. 2126 Opts.Trigraphs = !Opts.GNUMode && !Opts.MSVCCompat && !Opts.CPlusPlus17; 2127 Opts.Trigraphs = 2128 Args.hasFlag(OPT_ftrigraphs, OPT_fno_trigraphs, Opts.Trigraphs); 2129 2130 Opts.DollarIdents = Args.hasFlag(OPT_fdollars_in_identifiers, 2131 OPT_fno_dollars_in_identifiers, 2132 Opts.DollarIdents); 2133 Opts.PascalStrings = Args.hasArg(OPT_fpascal_strings); 2134 Opts.VtorDispMode = getLastArgIntValue(Args, OPT_vtordisp_mode_EQ, 1, Diags); 2135 Opts.Borland = Args.hasArg(OPT_fborland_extensions); 2136 Opts.WritableStrings = Args.hasArg(OPT_fwritable_strings); 2137 Opts.ConstStrings = Args.hasFlag(OPT_fconst_strings, OPT_fno_const_strings, 2138 Opts.ConstStrings); 2139 if (Args.hasArg(OPT_fno_lax_vector_conversions)) 2140 Opts.LaxVectorConversions = 0; 2141 if (Args.hasArg(OPT_fno_threadsafe_statics)) 2142 Opts.ThreadsafeStatics = 0; 2143 Opts.Exceptions = Args.hasArg(OPT_fexceptions); 2144 Opts.ObjCExceptions = Args.hasArg(OPT_fobjc_exceptions); 2145 Opts.CXXExceptions = Args.hasArg(OPT_fcxx_exceptions); 2146 2147 // Handle exception personalities 2148 Arg *A = Args.getLastArg(options::OPT_fsjlj_exceptions, 2149 options::OPT_fseh_exceptions, 2150 options::OPT_fdwarf_exceptions); 2151 if (A) { 2152 const Option &Opt = A->getOption(); 2153 Opts.SjLjExceptions = Opt.matches(options::OPT_fsjlj_exceptions); 2154 Opts.SEHExceptions = Opt.matches(options::OPT_fseh_exceptions); 2155 Opts.DWARFExceptions = Opt.matches(options::OPT_fdwarf_exceptions); 2156 } 2157 2158 Opts.ExternCNoUnwind = Args.hasArg(OPT_fexternc_nounwind); 2159 Opts.TraditionalCPP = Args.hasArg(OPT_traditional_cpp); 2160 2161 Opts.RTTI = Opts.CPlusPlus && !Args.hasArg(OPT_fno_rtti); 2162 Opts.RTTIData = Opts.RTTI && !Args.hasArg(OPT_fno_rtti_data); 2163 Opts.Blocks = Args.hasArg(OPT_fblocks) || (Opts.OpenCL 2164 && Opts.OpenCLVersion >= 200); 2165 Opts.BlocksRuntimeOptional = Args.hasArg(OPT_fblocks_runtime_optional); 2166 Opts.CoroutinesTS = Args.hasArg(OPT_fcoroutines_ts); 2167 2168 // Enable [[]] attributes in C++11 by default. 2169 Opts.DoubleSquareBracketAttributes = 2170 Args.hasFlag(OPT_fdouble_square_bracket_attributes, 2171 OPT_fno_double_square_bracket_attributes, Opts.CPlusPlus11); 2172 2173 Opts.ModulesTS = Args.hasArg(OPT_fmodules_ts); 2174 Opts.Modules = Args.hasArg(OPT_fmodules) || Opts.ModulesTS; 2175 Opts.ModulesStrictDeclUse = Args.hasArg(OPT_fmodules_strict_decluse); 2176 Opts.ModulesDeclUse = 2177 Args.hasArg(OPT_fmodules_decluse) || Opts.ModulesStrictDeclUse; 2178 Opts.ModulesLocalVisibility = 2179 Args.hasArg(OPT_fmodules_local_submodule_visibility) || Opts.ModulesTS; 2180 Opts.ModulesCodegen = Args.hasArg(OPT_fmodules_codegen); 2181 Opts.ModulesDebugInfo = Args.hasArg(OPT_fmodules_debuginfo); 2182 Opts.ModulesSearchAll = Opts.Modules && 2183 !Args.hasArg(OPT_fno_modules_search_all) && 2184 Args.hasArg(OPT_fmodules_search_all); 2185 Opts.ModulesErrorRecovery = !Args.hasArg(OPT_fno_modules_error_recovery); 2186 Opts.ImplicitModules = !Args.hasArg(OPT_fno_implicit_modules); 2187 Opts.CharIsSigned = Opts.OpenCL || !Args.hasArg(OPT_fno_signed_char); 2188 Opts.WChar = Opts.CPlusPlus && !Args.hasArg(OPT_fno_wchar); 2189 if (const Arg *A = Args.getLastArg(OPT_fwchar_type_EQ)) { 2190 Opts.WCharSize = llvm::StringSwitch<unsigned>(A->getValue()) 2191 .Case("char", 1) 2192 .Case("short", 2) 2193 .Case("int", 4) 2194 .Default(0); 2195 if (Opts.WCharSize == 0) 2196 Diags.Report(diag::err_fe_invalid_wchar_type) << A->getValue(); 2197 } 2198 Opts.WCharIsSigned = Args.hasFlag(OPT_fsigned_wchar, OPT_fno_signed_wchar, true); 2199 Opts.ShortEnums = Args.hasArg(OPT_fshort_enums); 2200 Opts.Freestanding = Args.hasArg(OPT_ffreestanding); 2201 Opts.NoBuiltin = Args.hasArg(OPT_fno_builtin) || Opts.Freestanding; 2202 if (!Opts.NoBuiltin) 2203 getAllNoBuiltinFuncValues(Args, Opts.NoBuiltinFuncs); 2204 Opts.NoMathBuiltin = Args.hasArg(OPT_fno_math_builtin); 2205 Opts.RelaxedTemplateTemplateArgs = 2206 Args.hasArg(OPT_frelaxed_template_template_args); 2207 Opts.SizedDeallocation = Args.hasArg(OPT_fsized_deallocation); 2208 Opts.AlignedAllocation = 2209 Args.hasFlag(OPT_faligned_allocation, OPT_fno_aligned_allocation, 2210 Opts.AlignedAllocation); 2211 Opts.AlignedAllocationUnavailable = 2212 Opts.AlignedAllocation && Args.hasArg(OPT_aligned_alloc_unavailable); 2213 Opts.NewAlignOverride = 2214 getLastArgIntValue(Args, OPT_fnew_alignment_EQ, 0, Diags); 2215 if (Opts.NewAlignOverride && !llvm::isPowerOf2_32(Opts.NewAlignOverride)) { 2216 Arg *A = Args.getLastArg(OPT_fnew_alignment_EQ); 2217 Diags.Report(diag::err_fe_invalid_alignment) << A->getAsString(Args) 2218 << A->getValue(); 2219 Opts.NewAlignOverride = 0; 2220 } 2221 Opts.ConceptsTS = Args.hasArg(OPT_fconcepts_ts); 2222 Opts.HeinousExtensions = Args.hasArg(OPT_fheinous_gnu_extensions); 2223 Opts.AccessControl = !Args.hasArg(OPT_fno_access_control); 2224 Opts.ElideConstructors = !Args.hasArg(OPT_fno_elide_constructors); 2225 Opts.MathErrno = !Opts.OpenCL && Args.hasArg(OPT_fmath_errno); 2226 Opts.InstantiationDepth = 2227 getLastArgIntValue(Args, OPT_ftemplate_depth, 1024, Diags); 2228 Opts.ArrowDepth = 2229 getLastArgIntValue(Args, OPT_foperator_arrow_depth, 256, Diags); 2230 Opts.ConstexprCallDepth = 2231 getLastArgIntValue(Args, OPT_fconstexpr_depth, 512, Diags); 2232 Opts.ConstexprStepLimit = 2233 getLastArgIntValue(Args, OPT_fconstexpr_steps, 1048576, Diags); 2234 Opts.BracketDepth = getLastArgIntValue(Args, OPT_fbracket_depth, 256, Diags); 2235 Opts.DelayedTemplateParsing = Args.hasArg(OPT_fdelayed_template_parsing); 2236 Opts.NumLargeByValueCopy = 2237 getLastArgIntValue(Args, OPT_Wlarge_by_value_copy_EQ, 0, Diags); 2238 Opts.MSBitfields = Args.hasArg(OPT_mms_bitfields); 2239 Opts.ObjCConstantStringClass = 2240 Args.getLastArgValue(OPT_fconstant_string_class); 2241 Opts.ObjCDefaultSynthProperties = 2242 !Args.hasArg(OPT_disable_objc_default_synthesize_properties); 2243 Opts.EncodeExtendedBlockSig = 2244 Args.hasArg(OPT_fencode_extended_block_signature); 2245 Opts.EmitAllDecls = Args.hasArg(OPT_femit_all_decls); 2246 Opts.PackStruct = getLastArgIntValue(Args, OPT_fpack_struct_EQ, 0, Diags); 2247 Opts.MaxTypeAlign = getLastArgIntValue(Args, OPT_fmax_type_align_EQ, 0, Diags); 2248 Opts.AlignDouble = Args.hasArg(OPT_malign_double); 2249 Opts.PICLevel = getLastArgIntValue(Args, OPT_pic_level, 0, Diags); 2250 Opts.PIE = Args.hasArg(OPT_pic_is_pie); 2251 Opts.Static = Args.hasArg(OPT_static_define); 2252 Opts.DumpRecordLayoutsSimple = Args.hasArg(OPT_fdump_record_layouts_simple); 2253 Opts.DumpRecordLayouts = Opts.DumpRecordLayoutsSimple 2254 || Args.hasArg(OPT_fdump_record_layouts); 2255 Opts.DumpVTableLayouts = Args.hasArg(OPT_fdump_vtable_layouts); 2256 Opts.SpellChecking = !Args.hasArg(OPT_fno_spell_checking); 2257 Opts.NoBitFieldTypeAlign = Args.hasArg(OPT_fno_bitfield_type_align); 2258 Opts.SinglePrecisionConstants = Args.hasArg(OPT_cl_single_precision_constant); 2259 Opts.FastRelaxedMath = Args.hasArg(OPT_cl_fast_relaxed_math); 2260 Opts.HexagonQdsp6Compat = Args.hasArg(OPT_mqdsp6_compat); 2261 Opts.FakeAddressSpaceMap = Args.hasArg(OPT_ffake_address_space_map); 2262 Opts.ParseUnknownAnytype = Args.hasArg(OPT_funknown_anytype); 2263 Opts.DebuggerSupport = Args.hasArg(OPT_fdebugger_support); 2264 Opts.DebuggerCastResultToId = Args.hasArg(OPT_fdebugger_cast_result_to_id); 2265 Opts.DebuggerObjCLiteral = Args.hasArg(OPT_fdebugger_objc_literal); 2266 Opts.ApplePragmaPack = Args.hasArg(OPT_fapple_pragma_pack); 2267 Opts.CurrentModule = Args.getLastArgValue(OPT_fmodule_name_EQ); 2268 Opts.AppExt = Args.hasArg(OPT_fapplication_extension); 2269 Opts.ModuleFeatures = Args.getAllArgValues(OPT_fmodule_feature); 2270 std::sort(Opts.ModuleFeatures.begin(), Opts.ModuleFeatures.end()); 2271 Opts.NativeHalfType |= Args.hasArg(OPT_fnative_half_type); 2272 Opts.NativeHalfArgsAndReturns |= Args.hasArg(OPT_fnative_half_arguments_and_returns); 2273 // Enable HalfArgsAndReturns if present in Args or if NativeHalfArgsAndReturns 2274 // is enabled. 2275 Opts.HalfArgsAndReturns = Args.hasArg(OPT_fallow_half_arguments_and_returns) 2276 | Opts.NativeHalfArgsAndReturns; 2277 Opts.GNUAsm = !Args.hasArg(OPT_fno_gnu_inline_asm); 2278 2279 // __declspec is enabled by default for the PS4 by the driver, and also 2280 // enabled for Microsoft Extensions or Borland Extensions, here. 2281 // 2282 // FIXME: __declspec is also currently enabled for CUDA, but isn't really a 2283 // CUDA extension. However, it is required for supporting 2284 // __clang_cuda_builtin_vars.h, which uses __declspec(property). Once that has 2285 // been rewritten in terms of something more generic, remove the Opts.CUDA 2286 // term here. 2287 Opts.DeclSpecKeyword = 2288 Args.hasFlag(OPT_fdeclspec, OPT_fno_declspec, 2289 (Opts.MicrosoftExt || Opts.Borland || Opts.CUDA)); 2290 2291 if (Arg *A = Args.getLastArg(OPT_faddress_space_map_mangling_EQ)) { 2292 switch (llvm::StringSwitch<unsigned>(A->getValue()) 2293 .Case("target", LangOptions::ASMM_Target) 2294 .Case("no", LangOptions::ASMM_Off) 2295 .Case("yes", LangOptions::ASMM_On) 2296 .Default(255)) { 2297 default: 2298 Diags.Report(diag::err_drv_invalid_value) 2299 << "-faddress-space-map-mangling=" << A->getValue(); 2300 break; 2301 case LangOptions::ASMM_Target: 2302 Opts.setAddressSpaceMapMangling(LangOptions::ASMM_Target); 2303 break; 2304 case LangOptions::ASMM_On: 2305 Opts.setAddressSpaceMapMangling(LangOptions::ASMM_On); 2306 break; 2307 case LangOptions::ASMM_Off: 2308 Opts.setAddressSpaceMapMangling(LangOptions::ASMM_Off); 2309 break; 2310 } 2311 } 2312 2313 if (Arg *A = Args.getLastArg(OPT_fms_memptr_rep_EQ)) { 2314 LangOptions::PragmaMSPointersToMembersKind InheritanceModel = 2315 llvm::StringSwitch<LangOptions::PragmaMSPointersToMembersKind>( 2316 A->getValue()) 2317 .Case("single", 2318 LangOptions::PPTMK_FullGeneralitySingleInheritance) 2319 .Case("multiple", 2320 LangOptions::PPTMK_FullGeneralityMultipleInheritance) 2321 .Case("virtual", 2322 LangOptions::PPTMK_FullGeneralityVirtualInheritance) 2323 .Default(LangOptions::PPTMK_BestCase); 2324 if (InheritanceModel == LangOptions::PPTMK_BestCase) 2325 Diags.Report(diag::err_drv_invalid_value) 2326 << "-fms-memptr-rep=" << A->getValue(); 2327 2328 Opts.setMSPointerToMemberRepresentationMethod(InheritanceModel); 2329 } 2330 2331 // Check for MS default calling conventions being specified. 2332 if (Arg *A = Args.getLastArg(OPT_fdefault_calling_conv_EQ)) { 2333 LangOptions::DefaultCallingConvention DefaultCC = 2334 llvm::StringSwitch<LangOptions::DefaultCallingConvention>(A->getValue()) 2335 .Case("cdecl", LangOptions::DCC_CDecl) 2336 .Case("fastcall", LangOptions::DCC_FastCall) 2337 .Case("stdcall", LangOptions::DCC_StdCall) 2338 .Case("vectorcall", LangOptions::DCC_VectorCall) 2339 .Case("regcall", LangOptions::DCC_RegCall) 2340 .Default(LangOptions::DCC_None); 2341 if (DefaultCC == LangOptions::DCC_None) 2342 Diags.Report(diag::err_drv_invalid_value) 2343 << "-fdefault-calling-conv=" << A->getValue(); 2344 2345 llvm::Triple T(TargetOpts.Triple); 2346 llvm::Triple::ArchType Arch = T.getArch(); 2347 bool emitError = (DefaultCC == LangOptions::DCC_FastCall || 2348 DefaultCC == LangOptions::DCC_StdCall) && 2349 Arch != llvm::Triple::x86; 2350 emitError |= (DefaultCC == LangOptions::DCC_VectorCall || 2351 DefaultCC == LangOptions::DCC_RegCall) && 2352 !(Arch == llvm::Triple::x86 || Arch == llvm::Triple::x86_64); 2353 if (emitError) 2354 Diags.Report(diag::err_drv_argument_not_allowed_with) 2355 << A->getSpelling() << T.getTriple(); 2356 else 2357 Opts.setDefaultCallingConv(DefaultCC); 2358 } 2359 2360 // -mrtd option 2361 if (Arg *A = Args.getLastArg(OPT_mrtd)) { 2362 if (Opts.getDefaultCallingConv() != LangOptions::DCC_None) 2363 Diags.Report(diag::err_drv_argument_not_allowed_with) 2364 << A->getSpelling() << "-fdefault-calling-conv"; 2365 else { 2366 llvm::Triple T(TargetOpts.Triple); 2367 if (T.getArch() != llvm::Triple::x86) 2368 Diags.Report(diag::err_drv_argument_not_allowed_with) 2369 << A->getSpelling() << T.getTriple(); 2370 else 2371 Opts.setDefaultCallingConv(LangOptions::DCC_StdCall); 2372 } 2373 } 2374 2375 // Check if -fopenmp is specified. 2376 Opts.OpenMP = Args.hasArg(options::OPT_fopenmp) ? 1 : 0; 2377 Opts.OpenMPUseTLS = 2378 Opts.OpenMP && !Args.hasArg(options::OPT_fnoopenmp_use_tls); 2379 Opts.OpenMPIsDevice = 2380 Opts.OpenMP && Args.hasArg(options::OPT_fopenmp_is_device); 2381 2382 if (Opts.OpenMP) { 2383 int Version = 2384 getLastArgIntValue(Args, OPT_fopenmp_version_EQ, Opts.OpenMP, Diags); 2385 if (Version != 0) 2386 Opts.OpenMP = Version; 2387 // Provide diagnostic when a given target is not expected to be an OpenMP 2388 // device or host. 2389 if (!Opts.OpenMPIsDevice) { 2390 switch (T.getArch()) { 2391 default: 2392 break; 2393 // Add unsupported host targets here: 2394 case llvm::Triple::nvptx: 2395 case llvm::Triple::nvptx64: 2396 Diags.Report(clang::diag::err_drv_omp_host_target_not_supported) 2397 << TargetOpts.Triple; 2398 break; 2399 } 2400 } 2401 } 2402 2403 // Set the flag to prevent the implementation from emitting device exception 2404 // handling code for those requiring so. 2405 if (Opts.OpenMPIsDevice && T.isNVPTX()) { 2406 Opts.Exceptions = 0; 2407 Opts.CXXExceptions = 0; 2408 } 2409 2410 // Get the OpenMP target triples if any. 2411 if (Arg *A = Args.getLastArg(options::OPT_fopenmp_targets_EQ)) { 2412 2413 for (unsigned i = 0; i < A->getNumValues(); ++i) { 2414 llvm::Triple TT(A->getValue(i)); 2415 2416 if (TT.getArch() == llvm::Triple::UnknownArch || 2417 !(TT.getArch() == llvm::Triple::ppc || 2418 TT.getArch() == llvm::Triple::ppc64 || 2419 TT.getArch() == llvm::Triple::ppc64le || 2420 TT.getArch() == llvm::Triple::nvptx || 2421 TT.getArch() == llvm::Triple::nvptx64 || 2422 TT.getArch() == llvm::Triple::x86 || 2423 TT.getArch() == llvm::Triple::x86_64)) 2424 Diags.Report(clang::diag::err_drv_invalid_omp_target) << A->getValue(i); 2425 else 2426 Opts.OMPTargetTriples.push_back(TT); 2427 } 2428 } 2429 2430 // Get OpenMP host file path if any and report if a non existent file is 2431 // found 2432 if (Arg *A = Args.getLastArg(options::OPT_fopenmp_host_ir_file_path)) { 2433 Opts.OMPHostIRFile = A->getValue(); 2434 if (!llvm::sys::fs::exists(Opts.OMPHostIRFile)) 2435 Diags.Report(clang::diag::err_drv_omp_host_ir_file_not_found) 2436 << Opts.OMPHostIRFile; 2437 } 2438 2439 // Record whether the __DEPRECATED define was requested. 2440 Opts.Deprecated = Args.hasFlag(OPT_fdeprecated_macro, 2441 OPT_fno_deprecated_macro, 2442 Opts.Deprecated); 2443 2444 // FIXME: Eliminate this dependency. 2445 unsigned Opt = getOptimizationLevel(Args, IK, Diags), 2446 OptSize = getOptimizationLevelSize(Args); 2447 Opts.Optimize = Opt != 0; 2448 Opts.OptimizeSize = OptSize != 0; 2449 2450 // This is the __NO_INLINE__ define, which just depends on things like the 2451 // optimization level and -fno-inline, not actually whether the backend has 2452 // inlining enabled. 2453 Opts.NoInlineDefine = !Opts.Optimize; 2454 if (Arg *InlineArg = Args.getLastArg( 2455 options::OPT_finline_functions, options::OPT_finline_hint_functions, 2456 options::OPT_fno_inline_functions, options::OPT_fno_inline)) 2457 if (InlineArg->getOption().matches(options::OPT_fno_inline)) 2458 Opts.NoInlineDefine = true; 2459 2460 Opts.FastMath = Args.hasArg(OPT_ffast_math) || 2461 Args.hasArg(OPT_cl_fast_relaxed_math); 2462 Opts.FiniteMathOnly = Args.hasArg(OPT_ffinite_math_only) || 2463 Args.hasArg(OPT_cl_finite_math_only) || 2464 Args.hasArg(OPT_cl_fast_relaxed_math); 2465 Opts.UnsafeFPMath = Args.hasArg(OPT_menable_unsafe_fp_math) || 2466 Args.hasArg(OPT_cl_unsafe_math_optimizations) || 2467 Args.hasArg(OPT_cl_fast_relaxed_math); 2468 2469 if (Arg *A = Args.getLastArg(OPT_ffp_contract)) { 2470 StringRef Val = A->getValue(); 2471 if (Val == "fast") 2472 Opts.setDefaultFPContractMode(LangOptions::FPC_Fast); 2473 else if (Val == "on") 2474 Opts.setDefaultFPContractMode(LangOptions::FPC_On); 2475 else if (Val == "off") 2476 Opts.setDefaultFPContractMode(LangOptions::FPC_Off); 2477 else 2478 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Val; 2479 } 2480 2481 Opts.RetainCommentsFromSystemHeaders = 2482 Args.hasArg(OPT_fretain_comments_from_system_headers); 2483 2484 unsigned SSP = getLastArgIntValue(Args, OPT_stack_protector, 0, Diags); 2485 switch (SSP) { 2486 default: 2487 Diags.Report(diag::err_drv_invalid_value) 2488 << Args.getLastArg(OPT_stack_protector)->getAsString(Args) << SSP; 2489 break; 2490 case 0: Opts.setStackProtector(LangOptions::SSPOff); break; 2491 case 1: Opts.setStackProtector(LangOptions::SSPOn); break; 2492 case 2: Opts.setStackProtector(LangOptions::SSPStrong); break; 2493 case 3: Opts.setStackProtector(LangOptions::SSPReq); break; 2494 } 2495 2496 // Parse -fsanitize= arguments. 2497 parseSanitizerKinds("-fsanitize=", Args.getAllArgValues(OPT_fsanitize_EQ), 2498 Diags, Opts.Sanitize); 2499 // -fsanitize-address-field-padding=N has to be a LangOpt, parse it here. 2500 Opts.SanitizeAddressFieldPadding = 2501 getLastArgIntValue(Args, OPT_fsanitize_address_field_padding, 0, Diags); 2502 Opts.SanitizerBlacklistFiles = Args.getAllArgValues(OPT_fsanitize_blacklist); 2503 2504 // -fxray-instrument 2505 Opts.XRayInstrument = 2506 Args.hasFlag(OPT_fxray_instrument, OPT_fnoxray_instrument, false); 2507 2508 // -fxray-always-emit-customevents 2509 Opts.XRayAlwaysEmitCustomEvents = 2510 Args.hasFlag(OPT_fxray_always_emit_customevents, 2511 OPT_fnoxray_always_emit_customevents, false); 2512 2513 // -fxray-{always,never}-instrument= filenames. 2514 Opts.XRayAlwaysInstrumentFiles = 2515 Args.getAllArgValues(OPT_fxray_always_instrument); 2516 Opts.XRayNeverInstrumentFiles = 2517 Args.getAllArgValues(OPT_fxray_never_instrument); 2518 2519 // -fallow-editor-placeholders 2520 Opts.AllowEditorPlaceholders = Args.hasArg(OPT_fallow_editor_placeholders); 2521 } 2522 2523 static bool isStrictlyPreprocessorAction(frontend::ActionKind Action) { 2524 switch (Action) { 2525 case frontend::ASTDeclList: 2526 case frontend::ASTDump: 2527 case frontend::ASTPrint: 2528 case frontend::ASTView: 2529 case frontend::EmitAssembly: 2530 case frontend::EmitBC: 2531 case frontend::EmitHTML: 2532 case frontend::EmitLLVM: 2533 case frontend::EmitLLVMOnly: 2534 case frontend::EmitCodeGenOnly: 2535 case frontend::EmitObj: 2536 case frontend::FixIt: 2537 case frontend::GenerateModule: 2538 case frontend::GenerateModuleInterface: 2539 case frontend::GeneratePCH: 2540 case frontend::GeneratePTH: 2541 case frontend::ParseSyntaxOnly: 2542 case frontend::ModuleFileInfo: 2543 case frontend::VerifyPCH: 2544 case frontend::PluginAction: 2545 case frontend::PrintDeclContext: 2546 case frontend::RewriteObjC: 2547 case frontend::RewriteTest: 2548 case frontend::RunAnalysis: 2549 case frontend::MigrateSource: 2550 return false; 2551 2552 case frontend::DumpRawTokens: 2553 case frontend::DumpTokens: 2554 case frontend::InitOnly: 2555 case frontend::PrintPreamble: 2556 case frontend::PrintPreprocessedInput: 2557 case frontend::RewriteMacros: 2558 case frontend::RunPreprocessorOnly: 2559 return true; 2560 } 2561 llvm_unreachable("invalid frontend action"); 2562 } 2563 2564 static void ParsePreprocessorArgs(PreprocessorOptions &Opts, ArgList &Args, 2565 FileManager &FileMgr, 2566 DiagnosticsEngine &Diags, 2567 frontend::ActionKind Action) { 2568 using namespace options; 2569 Opts.ImplicitPCHInclude = Args.getLastArgValue(OPT_include_pch); 2570 Opts.ImplicitPTHInclude = Args.getLastArgValue(OPT_include_pth); 2571 if (const Arg *A = Args.getLastArg(OPT_token_cache)) 2572 Opts.TokenCache = A->getValue(); 2573 else 2574 Opts.TokenCache = Opts.ImplicitPTHInclude; 2575 Opts.UsePredefines = !Args.hasArg(OPT_undef); 2576 Opts.DetailedRecord = Args.hasArg(OPT_detailed_preprocessing_record); 2577 Opts.DisablePCHValidation = Args.hasArg(OPT_fno_validate_pch); 2578 Opts.AllowPCHWithCompilerErrors = Args.hasArg(OPT_fallow_pch_with_errors); 2579 2580 Opts.DumpDeserializedPCHDecls = Args.hasArg(OPT_dump_deserialized_pch_decls); 2581 for (const Arg *A : Args.filtered(OPT_error_on_deserialized_pch_decl)) 2582 Opts.DeserializedPCHDeclsToErrorOn.insert(A->getValue()); 2583 2584 if (const Arg *A = Args.getLastArg(OPT_preamble_bytes_EQ)) { 2585 StringRef Value(A->getValue()); 2586 size_t Comma = Value.find(','); 2587 unsigned Bytes = 0; 2588 unsigned EndOfLine = 0; 2589 2590 if (Comma == StringRef::npos || 2591 Value.substr(0, Comma).getAsInteger(10, Bytes) || 2592 Value.substr(Comma + 1).getAsInteger(10, EndOfLine)) 2593 Diags.Report(diag::err_drv_preamble_format); 2594 else { 2595 Opts.PrecompiledPreambleBytes.first = Bytes; 2596 Opts.PrecompiledPreambleBytes.second = (EndOfLine != 0); 2597 } 2598 } 2599 2600 // Add macros from the command line. 2601 for (const Arg *A : Args.filtered(OPT_D, OPT_U)) { 2602 if (A->getOption().matches(OPT_D)) 2603 Opts.addMacroDef(A->getValue()); 2604 else 2605 Opts.addMacroUndef(A->getValue()); 2606 } 2607 2608 Opts.MacroIncludes = Args.getAllArgValues(OPT_imacros); 2609 2610 // Add the ordered list of -includes. 2611 for (const Arg *A : Args.filtered(OPT_include)) 2612 Opts.Includes.emplace_back(A->getValue()); 2613 2614 for (const Arg *A : Args.filtered(OPT_chain_include)) 2615 Opts.ChainedIncludes.emplace_back(A->getValue()); 2616 2617 for (const Arg *A : Args.filtered(OPT_remap_file)) { 2618 std::pair<StringRef, StringRef> Split = StringRef(A->getValue()).split(';'); 2619 2620 if (Split.second.empty()) { 2621 Diags.Report(diag::err_drv_invalid_remap_file) << A->getAsString(Args); 2622 continue; 2623 } 2624 2625 Opts.addRemappedFile(Split.first, Split.second); 2626 } 2627 2628 if (Arg *A = Args.getLastArg(OPT_fobjc_arc_cxxlib_EQ)) { 2629 StringRef Name = A->getValue(); 2630 unsigned Library = llvm::StringSwitch<unsigned>(Name) 2631 .Case("libc++", ARCXX_libcxx) 2632 .Case("libstdc++", ARCXX_libstdcxx) 2633 .Case("none", ARCXX_nolib) 2634 .Default(~0U); 2635 if (Library == ~0U) 2636 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Name; 2637 else 2638 Opts.ObjCXXARCStandardLibrary = (ObjCXXARCStandardLibraryKind)Library; 2639 } 2640 2641 // Always avoid lexing editor placeholders when we're just running the 2642 // preprocessor as we never want to emit the 2643 // "editor placeholder in source file" error in PP only mode. 2644 if (isStrictlyPreprocessorAction(Action)) 2645 Opts.LexEditorPlaceholders = false; 2646 } 2647 2648 static void ParsePreprocessorOutputArgs(PreprocessorOutputOptions &Opts, 2649 ArgList &Args, 2650 frontend::ActionKind Action) { 2651 using namespace options; 2652 2653 if (isStrictlyPreprocessorAction(Action)) 2654 Opts.ShowCPP = !Args.hasArg(OPT_dM); 2655 else 2656 Opts.ShowCPP = 0; 2657 2658 Opts.ShowComments = Args.hasArg(OPT_C); 2659 Opts.ShowLineMarkers = !Args.hasArg(OPT_P); 2660 Opts.ShowMacroComments = Args.hasArg(OPT_CC); 2661 Opts.ShowMacros = Args.hasArg(OPT_dM) || Args.hasArg(OPT_dD); 2662 Opts.ShowIncludeDirectives = Args.hasArg(OPT_dI); 2663 Opts.RewriteIncludes = Args.hasArg(OPT_frewrite_includes); 2664 Opts.RewriteImports = Args.hasArg(OPT_frewrite_imports); 2665 Opts.UseLineDirectives = Args.hasArg(OPT_fuse_line_directives); 2666 } 2667 2668 static void ParseTargetArgs(TargetOptions &Opts, ArgList &Args, 2669 DiagnosticsEngine &Diags) { 2670 using namespace options; 2671 Opts.ABI = Args.getLastArgValue(OPT_target_abi); 2672 if (Arg *A = Args.getLastArg(OPT_meabi)) { 2673 StringRef Value = A->getValue(); 2674 llvm::EABI EABIVersion = llvm::StringSwitch<llvm::EABI>(Value) 2675 .Case("default", llvm::EABI::Default) 2676 .Case("4", llvm::EABI::EABI4) 2677 .Case("5", llvm::EABI::EABI5) 2678 .Case("gnu", llvm::EABI::GNU) 2679 .Default(llvm::EABI::Unknown); 2680 if (EABIVersion == llvm::EABI::Unknown) 2681 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) 2682 << Value; 2683 else 2684 Opts.EABIVersion = EABIVersion; 2685 } 2686 Opts.CPU = Args.getLastArgValue(OPT_target_cpu); 2687 Opts.FPMath = Args.getLastArgValue(OPT_mfpmath); 2688 Opts.FeaturesAsWritten = Args.getAllArgValues(OPT_target_feature); 2689 Opts.LinkerVersion = Args.getLastArgValue(OPT_target_linker_version); 2690 Opts.Triple = llvm::Triple::normalize(Args.getLastArgValue(OPT_triple)); 2691 // Use the default target triple if unspecified. 2692 if (Opts.Triple.empty()) 2693 Opts.Triple = llvm::sys::getDefaultTargetTriple(); 2694 Opts.OpenCLExtensionsAsWritten = Args.getAllArgValues(OPT_cl_ext_EQ); 2695 } 2696 2697 bool CompilerInvocation::CreateFromArgs(CompilerInvocation &Res, 2698 const char *const *ArgBegin, 2699 const char *const *ArgEnd, 2700 DiagnosticsEngine &Diags) { 2701 bool Success = true; 2702 2703 // Parse the arguments. 2704 std::unique_ptr<OptTable> Opts = createDriverOptTable(); 2705 const unsigned IncludedFlagsBitmask = options::CC1Option; 2706 unsigned MissingArgIndex, MissingArgCount; 2707 InputArgList Args = 2708 Opts->ParseArgs(llvm::makeArrayRef(ArgBegin, ArgEnd), MissingArgIndex, 2709 MissingArgCount, IncludedFlagsBitmask); 2710 LangOptions &LangOpts = *Res.getLangOpts(); 2711 2712 // Check for missing argument error. 2713 if (MissingArgCount) { 2714 Diags.Report(diag::err_drv_missing_argument) 2715 << Args.getArgString(MissingArgIndex) << MissingArgCount; 2716 Success = false; 2717 } 2718 2719 // Issue errors on unknown arguments. 2720 for (const Arg *A : Args.filtered(OPT_UNKNOWN)) { 2721 Diags.Report(diag::err_drv_unknown_argument) << A->getAsString(Args); 2722 Success = false; 2723 } 2724 2725 Success &= ParseAnalyzerArgs(*Res.getAnalyzerOpts(), Args, Diags); 2726 Success &= ParseMigratorArgs(Res.getMigratorOpts(), Args); 2727 ParseDependencyOutputArgs(Res.getDependencyOutputOpts(), Args); 2728 Success &= 2729 ParseDiagnosticArgs(Res.getDiagnosticOpts(), Args, &Diags, 2730 false /*DefaultDiagColor*/, false /*DefaultShowOpt*/); 2731 ParseCommentArgs(LangOpts.CommentOpts, Args); 2732 ParseFileSystemArgs(Res.getFileSystemOpts(), Args); 2733 // FIXME: We shouldn't have to pass the DashX option around here 2734 InputKind DashX = ParseFrontendArgs(Res.getFrontendOpts(), Args, Diags, 2735 LangOpts.IsHeaderFile); 2736 ParseTargetArgs(Res.getTargetOpts(), Args, Diags); 2737 Success &= ParseCodeGenArgs(Res.getCodeGenOpts(), Args, DashX, Diags, 2738 Res.getTargetOpts()); 2739 ParseHeaderSearchArgs(Res.getHeaderSearchOpts(), Args, 2740 Res.getFileSystemOpts().WorkingDir); 2741 if (DashX.getFormat() == InputKind::Precompiled || 2742 DashX.getLanguage() == InputKind::LLVM_IR) { 2743 // ObjCAAutoRefCount and Sanitize LangOpts are used to setup the 2744 // PassManager in BackendUtil.cpp. They need to be initializd no matter 2745 // what the input type is. 2746 if (Args.hasArg(OPT_fobjc_arc)) 2747 LangOpts.ObjCAutoRefCount = 1; 2748 // PIClevel and PIELevel are needed during code generation and this should be 2749 // set regardless of the input type. 2750 LangOpts.PICLevel = getLastArgIntValue(Args, OPT_pic_level, 0, Diags); 2751 LangOpts.PIE = Args.hasArg(OPT_pic_is_pie); 2752 parseSanitizerKinds("-fsanitize=", Args.getAllArgValues(OPT_fsanitize_EQ), 2753 Diags, LangOpts.Sanitize); 2754 } else { 2755 // Other LangOpts are only initialzed when the input is not AST or LLVM IR. 2756 // FIXME: Should we really be calling this for an InputKind::Asm input? 2757 ParseLangArgs(LangOpts, Args, DashX, Res.getTargetOpts(), 2758 Res.getPreprocessorOpts(), Diags); 2759 if (Res.getFrontendOpts().ProgramAction == frontend::RewriteObjC) 2760 LangOpts.ObjCExceptions = 1; 2761 } 2762 2763 if (LangOpts.CUDA) { 2764 // During CUDA device-side compilation, the aux triple is the 2765 // triple used for host compilation. 2766 if (LangOpts.CUDAIsDevice) 2767 Res.getTargetOpts().HostTriple = Res.getFrontendOpts().AuxTriple; 2768 } 2769 2770 // Set the triple of the host for OpenMP device compile. 2771 if (LangOpts.OpenMPIsDevice) 2772 Res.getTargetOpts().HostTriple = Res.getFrontendOpts().AuxTriple; 2773 2774 // FIXME: Override value name discarding when asan or msan is used because the 2775 // backend passes depend on the name of the alloca in order to print out 2776 // names. 2777 Res.getCodeGenOpts().DiscardValueNames &= 2778 !LangOpts.Sanitize.has(SanitizerKind::Address) && 2779 !LangOpts.Sanitize.has(SanitizerKind::Memory); 2780 2781 // FIXME: ParsePreprocessorArgs uses the FileManager to read the contents of 2782 // PCH file and find the original header name. Remove the need to do that in 2783 // ParsePreprocessorArgs and remove the FileManager 2784 // parameters from the function and the "FileManager.h" #include. 2785 FileManager FileMgr(Res.getFileSystemOpts()); 2786 ParsePreprocessorArgs(Res.getPreprocessorOpts(), Args, FileMgr, Diags, 2787 Res.getFrontendOpts().ProgramAction); 2788 ParsePreprocessorOutputArgs(Res.getPreprocessorOutputOpts(), Args, 2789 Res.getFrontendOpts().ProgramAction); 2790 2791 // Turn on -Wspir-compat for SPIR target. 2792 llvm::Triple T(Res.getTargetOpts().Triple); 2793 auto Arch = T.getArch(); 2794 if (Arch == llvm::Triple::spir || Arch == llvm::Triple::spir64) { 2795 Res.getDiagnosticOpts().Warnings.push_back("spir-compat"); 2796 } 2797 2798 // If sanitizer is enabled, disable OPT_ffine_grained_bitfield_accesses. 2799 if (Res.getCodeGenOpts().FineGrainedBitfieldAccesses && 2800 !Res.getLangOpts()->Sanitize.empty()) { 2801 Res.getCodeGenOpts().FineGrainedBitfieldAccesses = false; 2802 Diags.Report(diag::warn_drv_fine_grained_bitfield_accesses_ignored); 2803 } 2804 return Success; 2805 } 2806 2807 std::string CompilerInvocation::getModuleHash() const { 2808 // Note: For QoI reasons, the things we use as a hash here should all be 2809 // dumped via the -module-info flag. 2810 using llvm::hash_code; 2811 using llvm::hash_value; 2812 using llvm::hash_combine; 2813 2814 // Start the signature with the compiler version. 2815 // FIXME: We'd rather use something more cryptographically sound than 2816 // CityHash, but this will do for now. 2817 hash_code code = hash_value(getClangFullRepositoryVersion()); 2818 2819 // Extend the signature with the language options 2820 #define LANGOPT(Name, Bits, Default, Description) \ 2821 code = hash_combine(code, LangOpts->Name); 2822 #define ENUM_LANGOPT(Name, Type, Bits, Default, Description) \ 2823 code = hash_combine(code, static_cast<unsigned>(LangOpts->get##Name())); 2824 #define BENIGN_LANGOPT(Name, Bits, Default, Description) 2825 #define BENIGN_ENUM_LANGOPT(Name, Type, Bits, Default, Description) 2826 #include "clang/Basic/LangOptions.def" 2827 2828 for (StringRef Feature : LangOpts->ModuleFeatures) 2829 code = hash_combine(code, Feature); 2830 2831 // Extend the signature with the target options. 2832 code = hash_combine(code, TargetOpts->Triple, TargetOpts->CPU, 2833 TargetOpts->ABI); 2834 for (unsigned i = 0, n = TargetOpts->FeaturesAsWritten.size(); i != n; ++i) 2835 code = hash_combine(code, TargetOpts->FeaturesAsWritten[i]); 2836 2837 // Extend the signature with preprocessor options. 2838 const PreprocessorOptions &ppOpts = getPreprocessorOpts(); 2839 const HeaderSearchOptions &hsOpts = getHeaderSearchOpts(); 2840 code = hash_combine(code, ppOpts.UsePredefines, ppOpts.DetailedRecord); 2841 2842 for (std::vector<std::pair<std::string, bool/*isUndef*/>>::const_iterator 2843 I = getPreprocessorOpts().Macros.begin(), 2844 IEnd = getPreprocessorOpts().Macros.end(); 2845 I != IEnd; ++I) { 2846 // If we're supposed to ignore this macro for the purposes of modules, 2847 // don't put it into the hash. 2848 if (!hsOpts.ModulesIgnoreMacros.empty()) { 2849 // Check whether we're ignoring this macro. 2850 StringRef MacroDef = I->first; 2851 if (hsOpts.ModulesIgnoreMacros.count( 2852 llvm::CachedHashString(MacroDef.split('=').first))) 2853 continue; 2854 } 2855 2856 code = hash_combine(code, I->first, I->second); 2857 } 2858 2859 // Extend the signature with the sysroot and other header search options. 2860 code = hash_combine(code, hsOpts.Sysroot, 2861 hsOpts.ModuleFormat, 2862 hsOpts.UseDebugInfo, 2863 hsOpts.UseBuiltinIncludes, 2864 hsOpts.UseStandardSystemIncludes, 2865 hsOpts.UseStandardCXXIncludes, 2866 hsOpts.UseLibcxx, 2867 hsOpts.ModulesValidateDiagnosticOptions); 2868 code = hash_combine(code, hsOpts.ResourceDir); 2869 2870 // Extend the signature with the user build path. 2871 code = hash_combine(code, hsOpts.ModuleUserBuildPath); 2872 2873 // Extend the signature with the module file extensions. 2874 const FrontendOptions &frontendOpts = getFrontendOpts(); 2875 for (const auto &ext : frontendOpts.ModuleFileExtensions) { 2876 code = ext->hashExtension(code); 2877 } 2878 2879 // Extend the signature with the enabled sanitizers, if at least one is 2880 // enabled. Sanitizers which cannot affect AST generation aren't hashed. 2881 SanitizerSet SanHash = LangOpts->Sanitize; 2882 SanHash.clear(getPPTransparentSanitizers()); 2883 if (!SanHash.empty()) 2884 code = hash_combine(code, SanHash.Mask); 2885 2886 return llvm::APInt(64, code).toString(36, /*Signed=*/false); 2887 } 2888 2889 namespace clang { 2890 2891 template<typename IntTy> 2892 static IntTy getLastArgIntValueImpl(const ArgList &Args, OptSpecifier Id, 2893 IntTy Default, 2894 DiagnosticsEngine *Diags) { 2895 IntTy Res = Default; 2896 if (Arg *A = Args.getLastArg(Id)) { 2897 if (StringRef(A->getValue()).getAsInteger(10, Res)) { 2898 if (Diags) 2899 Diags->Report(diag::err_drv_invalid_int_value) << A->getAsString(Args) 2900 << A->getValue(); 2901 } 2902 } 2903 return Res; 2904 } 2905 2906 2907 // Declared in clang/Frontend/Utils.h. 2908 int getLastArgIntValue(const ArgList &Args, OptSpecifier Id, int Default, 2909 DiagnosticsEngine *Diags) { 2910 return getLastArgIntValueImpl<int>(Args, Id, Default, Diags); 2911 } 2912 2913 uint64_t getLastArgUInt64Value(const ArgList &Args, OptSpecifier Id, 2914 uint64_t Default, 2915 DiagnosticsEngine *Diags) { 2916 return getLastArgIntValueImpl<uint64_t>(Args, Id, Default, Diags); 2917 } 2918 2919 void BuryPointer(const void *Ptr) { 2920 // This function may be called only a small fixed amount of times per each 2921 // invocation, otherwise we do actually have a leak which we want to report. 2922 // If this function is called more than kGraveYardMaxSize times, the pointers 2923 // will not be properly buried and a leak detector will report a leak, which 2924 // is what we want in such case. 2925 static const size_t kGraveYardMaxSize = 16; 2926 LLVM_ATTRIBUTE_UNUSED static const void *GraveYard[kGraveYardMaxSize]; 2927 static std::atomic<unsigned> GraveYardSize; 2928 unsigned Idx = GraveYardSize++; 2929 if (Idx >= kGraveYardMaxSize) 2930 return; 2931 GraveYard[Idx] = Ptr; 2932 } 2933 2934 IntrusiveRefCntPtr<vfs::FileSystem> 2935 createVFSFromCompilerInvocation(const CompilerInvocation &CI, 2936 DiagnosticsEngine &Diags) { 2937 return createVFSFromCompilerInvocation(CI, Diags, vfs::getRealFileSystem()); 2938 } 2939 2940 IntrusiveRefCntPtr<vfs::FileSystem> 2941 createVFSFromCompilerInvocation(const CompilerInvocation &CI, 2942 DiagnosticsEngine &Diags, 2943 IntrusiveRefCntPtr<vfs::FileSystem> BaseFS) { 2944 if (CI.getHeaderSearchOpts().VFSOverlayFiles.empty()) 2945 return BaseFS; 2946 2947 IntrusiveRefCntPtr<vfs::OverlayFileSystem> Overlay( 2948 new vfs::OverlayFileSystem(BaseFS)); 2949 // earlier vfs files are on the bottom 2950 for (const std::string &File : CI.getHeaderSearchOpts().VFSOverlayFiles) { 2951 llvm::ErrorOr<std::unique_ptr<llvm::MemoryBuffer>> Buffer = 2952 BaseFS->getBufferForFile(File); 2953 if (!Buffer) { 2954 Diags.Report(diag::err_missing_vfs_overlay_file) << File; 2955 return IntrusiveRefCntPtr<vfs::FileSystem>(); 2956 } 2957 2958 IntrusiveRefCntPtr<vfs::FileSystem> FS = vfs::getVFSFromYAML( 2959 std::move(Buffer.get()), /*DiagHandler*/ nullptr, File); 2960 if (!FS.get()) { 2961 Diags.Report(diag::err_invalid_vfs_overlay) << File; 2962 return IntrusiveRefCntPtr<vfs::FileSystem>(); 2963 } 2964 Overlay->pushOverlay(FS); 2965 } 2966 return Overlay; 2967 } 2968 } // end namespace clang 2969