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.XRayInstrumentFunctions = Args.hasArg(OPT_fxray_instrument); 786 Opts.XRayInstructionThreshold = 787 getLastArgIntValue(Args, OPT_fxray_instruction_threshold_EQ, 200, Diags); 788 Opts.InstrumentForProfiling = Args.hasArg(OPT_pg); 789 Opts.CallFEntry = Args.hasArg(OPT_mfentry); 790 Opts.EmitOpenCLArgMetadata = Args.hasArg(OPT_cl_kernel_arg_info); 791 792 if (const Arg *A = Args.getLastArg(OPT_compress_debug_sections, 793 OPT_compress_debug_sections_EQ)) { 794 if (A->getOption().getID() == OPT_compress_debug_sections) { 795 // TODO: be more clever about the compression type auto-detection 796 Opts.setCompressDebugSections(llvm::DebugCompressionType::GNU); 797 } else { 798 auto DCT = llvm::StringSwitch<llvm::DebugCompressionType>(A->getValue()) 799 .Case("none", llvm::DebugCompressionType::None) 800 .Case("zlib", llvm::DebugCompressionType::Z) 801 .Case("zlib-gnu", llvm::DebugCompressionType::GNU) 802 .Default(llvm::DebugCompressionType::None); 803 Opts.setCompressDebugSections(DCT); 804 } 805 } 806 807 Opts.RelaxELFRelocations = Args.hasArg(OPT_mrelax_relocations); 808 Opts.DebugCompilationDir = Args.getLastArgValue(OPT_fdebug_compilation_dir); 809 for (auto A : Args.filtered(OPT_mlink_bitcode_file, OPT_mlink_cuda_bitcode)) { 810 CodeGenOptions::BitcodeFileToLink F; 811 F.Filename = A->getValue(); 812 if (A->getOption().matches(OPT_mlink_cuda_bitcode)) { 813 F.LinkFlags = llvm::Linker::Flags::LinkOnlyNeeded; 814 // When linking CUDA bitcode, propagate function attributes so that 815 // e.g. libdevice gets fast-math attrs if we're building with fast-math. 816 F.PropagateAttrs = true; 817 F.Internalize = true; 818 } 819 Opts.LinkBitcodeFiles.push_back(F); 820 } 821 Opts.SanitizeCoverageType = 822 getLastArgIntValue(Args, OPT_fsanitize_coverage_type, 0, Diags); 823 Opts.SanitizeCoverageIndirectCalls = 824 Args.hasArg(OPT_fsanitize_coverage_indirect_calls); 825 Opts.SanitizeCoverageTraceBB = Args.hasArg(OPT_fsanitize_coverage_trace_bb); 826 Opts.SanitizeCoverageTraceCmp = Args.hasArg(OPT_fsanitize_coverage_trace_cmp); 827 Opts.SanitizeCoverageTraceDiv = Args.hasArg(OPT_fsanitize_coverage_trace_div); 828 Opts.SanitizeCoverageTraceGep = Args.hasArg(OPT_fsanitize_coverage_trace_gep); 829 Opts.SanitizeCoverage8bitCounters = 830 Args.hasArg(OPT_fsanitize_coverage_8bit_counters); 831 Opts.SanitizeCoverageTracePC = Args.hasArg(OPT_fsanitize_coverage_trace_pc); 832 Opts.SanitizeCoverageTracePCGuard = 833 Args.hasArg(OPT_fsanitize_coverage_trace_pc_guard); 834 Opts.SanitizeCoverageNoPrune = Args.hasArg(OPT_fsanitize_coverage_no_prune); 835 Opts.SanitizeCoverageInline8bitCounters = 836 Args.hasArg(OPT_fsanitize_coverage_inline_8bit_counters); 837 Opts.SanitizeCoveragePCTable = Args.hasArg(OPT_fsanitize_coverage_pc_table); 838 Opts.SanitizeCoverageStackDepth = 839 Args.hasArg(OPT_fsanitize_coverage_stack_depth); 840 Opts.SanitizeMemoryTrackOrigins = 841 getLastArgIntValue(Args, OPT_fsanitize_memory_track_origins_EQ, 0, Diags); 842 Opts.SanitizeMemoryUseAfterDtor = 843 Args.hasFlag(OPT_fsanitize_memory_use_after_dtor, 844 OPT_fno_sanitize_memory_use_after_dtor, 845 false); 846 Opts.SanitizeMinimalRuntime = Args.hasArg(OPT_fsanitize_minimal_runtime); 847 Opts.SanitizeCfiCrossDso = Args.hasArg(OPT_fsanitize_cfi_cross_dso); 848 Opts.SanitizeCfiICallGeneralizePointers = 849 Args.hasArg(OPT_fsanitize_cfi_icall_generalize_pointers); 850 Opts.SanitizeStats = Args.hasArg(OPT_fsanitize_stats); 851 if (Arg *A = Args.getLastArg(OPT_fsanitize_address_use_after_scope, 852 OPT_fno_sanitize_address_use_after_scope)) { 853 Opts.SanitizeAddressUseAfterScope = 854 A->getOption().getID() == OPT_fsanitize_address_use_after_scope; 855 } 856 Opts.SanitizeAddressGlobalsDeadStripping = 857 Args.hasArg(OPT_fsanitize_address_globals_dead_stripping); 858 Opts.SSPBufferSize = 859 getLastArgIntValue(Args, OPT_stack_protector_buffer_size, 8, Diags); 860 Opts.StackRealignment = Args.hasArg(OPT_mstackrealign); 861 if (Arg *A = Args.getLastArg(OPT_mstack_alignment)) { 862 StringRef Val = A->getValue(); 863 unsigned StackAlignment = Opts.StackAlignment; 864 Val.getAsInteger(10, StackAlignment); 865 Opts.StackAlignment = StackAlignment; 866 } 867 868 if (Arg *A = Args.getLastArg(OPT_mstack_probe_size)) { 869 StringRef Val = A->getValue(); 870 unsigned StackProbeSize = Opts.StackProbeSize; 871 Val.getAsInteger(0, StackProbeSize); 872 Opts.StackProbeSize = StackProbeSize; 873 } 874 875 if (Arg *A = Args.getLastArg(OPT_fobjc_dispatch_method_EQ)) { 876 StringRef Name = A->getValue(); 877 unsigned Method = llvm::StringSwitch<unsigned>(Name) 878 .Case("legacy", CodeGenOptions::Legacy) 879 .Case("non-legacy", CodeGenOptions::NonLegacy) 880 .Case("mixed", CodeGenOptions::Mixed) 881 .Default(~0U); 882 if (Method == ~0U) { 883 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Name; 884 Success = false; 885 } else { 886 Opts.setObjCDispatchMethod( 887 static_cast<CodeGenOptions::ObjCDispatchMethodKind>(Method)); 888 } 889 } 890 891 Opts.EmulatedTLS = 892 Args.hasFlag(OPT_femulated_tls, OPT_fno_emulated_tls, false); 893 894 if (Arg *A = Args.getLastArg(OPT_ftlsmodel_EQ)) { 895 StringRef Name = A->getValue(); 896 unsigned Model = llvm::StringSwitch<unsigned>(Name) 897 .Case("global-dynamic", CodeGenOptions::GeneralDynamicTLSModel) 898 .Case("local-dynamic", CodeGenOptions::LocalDynamicTLSModel) 899 .Case("initial-exec", CodeGenOptions::InitialExecTLSModel) 900 .Case("local-exec", CodeGenOptions::LocalExecTLSModel) 901 .Default(~0U); 902 if (Model == ~0U) { 903 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Name; 904 Success = false; 905 } else { 906 Opts.setDefaultTLSModel(static_cast<CodeGenOptions::TLSModel>(Model)); 907 } 908 } 909 910 if (Arg *A = Args.getLastArg(OPT_fdenormal_fp_math_EQ)) { 911 StringRef Val = A->getValue(); 912 if (Val == "ieee") 913 Opts.FPDenormalMode = "ieee"; 914 else if (Val == "preserve-sign") 915 Opts.FPDenormalMode = "preserve-sign"; 916 else if (Val == "positive-zero") 917 Opts.FPDenormalMode = "positive-zero"; 918 else 919 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Val; 920 } 921 922 if (Arg *A = Args.getLastArg(OPT_fpcc_struct_return, OPT_freg_struct_return)) { 923 if (A->getOption().matches(OPT_fpcc_struct_return)) { 924 Opts.setStructReturnConvention(CodeGenOptions::SRCK_OnStack); 925 } else { 926 assert(A->getOption().matches(OPT_freg_struct_return)); 927 Opts.setStructReturnConvention(CodeGenOptions::SRCK_InRegs); 928 } 929 } 930 931 Opts.DependentLibraries = Args.getAllArgValues(OPT_dependent_lib); 932 Opts.LinkerOptions = Args.getAllArgValues(OPT_linker_option); 933 bool NeedLocTracking = false; 934 935 Opts.OptRecordFile = Args.getLastArgValue(OPT_opt_record_file); 936 if (!Opts.OptRecordFile.empty()) 937 NeedLocTracking = true; 938 939 if (Arg *A = Args.getLastArg(OPT_Rpass_EQ)) { 940 Opts.OptimizationRemarkPattern = 941 GenerateOptimizationRemarkRegex(Diags, Args, A); 942 NeedLocTracking = true; 943 } 944 945 if (Arg *A = Args.getLastArg(OPT_Rpass_missed_EQ)) { 946 Opts.OptimizationRemarkMissedPattern = 947 GenerateOptimizationRemarkRegex(Diags, Args, A); 948 NeedLocTracking = true; 949 } 950 951 if (Arg *A = Args.getLastArg(OPT_Rpass_analysis_EQ)) { 952 Opts.OptimizationRemarkAnalysisPattern = 953 GenerateOptimizationRemarkRegex(Diags, Args, A); 954 NeedLocTracking = true; 955 } 956 957 Opts.DiagnosticsWithHotness = 958 Args.hasArg(options::OPT_fdiagnostics_show_hotness); 959 bool UsingSampleProfile = !Opts.SampleProfileFile.empty(); 960 bool UsingProfile = UsingSampleProfile || 961 (Opts.getProfileUse() != CodeGenOptions::ProfileNone); 962 963 if (Opts.DiagnosticsWithHotness && !UsingProfile) 964 Diags.Report(diag::warn_drv_diagnostics_hotness_requires_pgo) 965 << "-fdiagnostics-show-hotness"; 966 967 Opts.DiagnosticsHotnessThreshold = getLastArgUInt64Value( 968 Args, options::OPT_fdiagnostics_hotness_threshold_EQ, 0); 969 if (Opts.DiagnosticsHotnessThreshold > 0 && !UsingProfile) 970 Diags.Report(diag::warn_drv_diagnostics_hotness_requires_pgo) 971 << "-fdiagnostics-hotness-threshold="; 972 973 // If the user requested to use a sample profile for PGO, then the 974 // backend will need to track source location information so the profile 975 // can be incorporated into the IR. 976 if (UsingSampleProfile) 977 NeedLocTracking = true; 978 979 // If the user requested a flag that requires source locations available in 980 // the backend, make sure that the backend tracks source location information. 981 if (NeedLocTracking && Opts.getDebugInfo() == codegenoptions::NoDebugInfo) 982 Opts.setDebugInfo(codegenoptions::LocTrackingOnly); 983 984 Opts.RewriteMapFiles = Args.getAllArgValues(OPT_frewrite_map_file); 985 986 // Parse -fsanitize-recover= arguments. 987 // FIXME: Report unrecoverable sanitizers incorrectly specified here. 988 parseSanitizerKinds("-fsanitize-recover=", 989 Args.getAllArgValues(OPT_fsanitize_recover_EQ), Diags, 990 Opts.SanitizeRecover); 991 parseSanitizerKinds("-fsanitize-trap=", 992 Args.getAllArgValues(OPT_fsanitize_trap_EQ), Diags, 993 Opts.SanitizeTrap); 994 995 Opts.CudaGpuBinaryFileNames = 996 Args.getAllArgValues(OPT_fcuda_include_gpubinary); 997 998 Opts.Backchain = Args.hasArg(OPT_mbackchain); 999 1000 Opts.EmitCheckPathComponentsToStrip = getLastArgIntValue( 1001 Args, OPT_fsanitize_undefined_strip_path_components_EQ, 0, Diags); 1002 1003 return Success; 1004 } 1005 1006 static void ParseDependencyOutputArgs(DependencyOutputOptions &Opts, 1007 ArgList &Args) { 1008 using namespace options; 1009 Opts.OutputFile = Args.getLastArgValue(OPT_dependency_file); 1010 Opts.Targets = Args.getAllArgValues(OPT_MT); 1011 Opts.IncludeSystemHeaders = Args.hasArg(OPT_sys_header_deps); 1012 Opts.IncludeModuleFiles = Args.hasArg(OPT_module_file_deps); 1013 Opts.UsePhonyTargets = Args.hasArg(OPT_MP); 1014 Opts.ShowHeaderIncludes = Args.hasArg(OPT_H); 1015 Opts.HeaderIncludeOutputFile = Args.getLastArgValue(OPT_header_include_file); 1016 Opts.AddMissingHeaderDeps = Args.hasArg(OPT_MG); 1017 Opts.PrintShowIncludes = Args.hasArg(OPT_show_includes); 1018 Opts.DOTOutputFile = Args.getLastArgValue(OPT_dependency_dot); 1019 Opts.ModuleDependencyOutputDir = 1020 Args.getLastArgValue(OPT_module_dependency_dir); 1021 if (Args.hasArg(OPT_MV)) 1022 Opts.OutputFormat = DependencyOutputFormat::NMake; 1023 // Add sanitizer blacklists as extra dependencies. 1024 // They won't be discovered by the regular preprocessor, so 1025 // we let make / ninja to know about this implicit dependency. 1026 Opts.ExtraDeps = Args.getAllArgValues(OPT_fdepfile_entry); 1027 // Only the -fmodule-file=<file> form. 1028 for (const Arg *A : Args.filtered(OPT_fmodule_file)) { 1029 StringRef Val = A->getValue(); 1030 if (Val.find('=') == StringRef::npos) 1031 Opts.ExtraDeps.push_back(Val); 1032 } 1033 } 1034 1035 static bool parseShowColorsArgs(const ArgList &Args, bool DefaultColor) { 1036 // Color diagnostics default to auto ("on" if terminal supports) in the driver 1037 // but default to off in cc1, needing an explicit OPT_fdiagnostics_color. 1038 // Support both clang's -f[no-]color-diagnostics and gcc's 1039 // -f[no-]diagnostics-colors[=never|always|auto]. 1040 enum { 1041 Colors_On, 1042 Colors_Off, 1043 Colors_Auto 1044 } ShowColors = DefaultColor ? Colors_Auto : Colors_Off; 1045 for (Arg *A : Args) { 1046 const Option &O = A->getOption(); 1047 if (O.matches(options::OPT_fcolor_diagnostics) || 1048 O.matches(options::OPT_fdiagnostics_color)) { 1049 ShowColors = Colors_On; 1050 } else if (O.matches(options::OPT_fno_color_diagnostics) || 1051 O.matches(options::OPT_fno_diagnostics_color)) { 1052 ShowColors = Colors_Off; 1053 } else if (O.matches(options::OPT_fdiagnostics_color_EQ)) { 1054 StringRef Value(A->getValue()); 1055 if (Value == "always") 1056 ShowColors = Colors_On; 1057 else if (Value == "never") 1058 ShowColors = Colors_Off; 1059 else if (Value == "auto") 1060 ShowColors = Colors_Auto; 1061 } 1062 } 1063 return ShowColors == Colors_On || 1064 (ShowColors == Colors_Auto && 1065 llvm::sys::Process::StandardErrHasColors()); 1066 } 1067 1068 bool clang::ParseDiagnosticArgs(DiagnosticOptions &Opts, ArgList &Args, 1069 DiagnosticsEngine *Diags, 1070 bool DefaultDiagColor, bool DefaultShowOpt) { 1071 using namespace options; 1072 bool Success = true; 1073 1074 Opts.DiagnosticLogFile = Args.getLastArgValue(OPT_diagnostic_log_file); 1075 if (Arg *A = 1076 Args.getLastArg(OPT_diagnostic_serialized_file, OPT__serialize_diags)) 1077 Opts.DiagnosticSerializationFile = A->getValue(); 1078 Opts.IgnoreWarnings = Args.hasArg(OPT_w); 1079 Opts.NoRewriteMacros = Args.hasArg(OPT_Wno_rewrite_macros); 1080 Opts.Pedantic = Args.hasArg(OPT_pedantic); 1081 Opts.PedanticErrors = Args.hasArg(OPT_pedantic_errors); 1082 Opts.ShowCarets = !Args.hasArg(OPT_fno_caret_diagnostics); 1083 Opts.ShowColors = parseShowColorsArgs(Args, DefaultDiagColor); 1084 Opts.ShowColumn = Args.hasFlag(OPT_fshow_column, 1085 OPT_fno_show_column, 1086 /*Default=*/true); 1087 Opts.ShowFixits = !Args.hasArg(OPT_fno_diagnostics_fixit_info); 1088 Opts.ShowLocation = !Args.hasArg(OPT_fno_show_source_location); 1089 Opts.AbsolutePath = Args.hasArg(OPT_fdiagnostics_absolute_paths); 1090 Opts.ShowOptionNames = 1091 Args.hasFlag(OPT_fdiagnostics_show_option, 1092 OPT_fno_diagnostics_show_option, DefaultShowOpt); 1093 1094 llvm::sys::Process::UseANSIEscapeCodes(Args.hasArg(OPT_fansi_escape_codes)); 1095 1096 // Default behavior is to not to show note include stacks. 1097 Opts.ShowNoteIncludeStack = false; 1098 if (Arg *A = Args.getLastArg(OPT_fdiagnostics_show_note_include_stack, 1099 OPT_fno_diagnostics_show_note_include_stack)) 1100 if (A->getOption().matches(OPT_fdiagnostics_show_note_include_stack)) 1101 Opts.ShowNoteIncludeStack = true; 1102 1103 StringRef ShowOverloads = 1104 Args.getLastArgValue(OPT_fshow_overloads_EQ, "all"); 1105 if (ShowOverloads == "best") 1106 Opts.setShowOverloads(Ovl_Best); 1107 else if (ShowOverloads == "all") 1108 Opts.setShowOverloads(Ovl_All); 1109 else { 1110 Success = false; 1111 if (Diags) 1112 Diags->Report(diag::err_drv_invalid_value) 1113 << Args.getLastArg(OPT_fshow_overloads_EQ)->getAsString(Args) 1114 << ShowOverloads; 1115 } 1116 1117 StringRef ShowCategory = 1118 Args.getLastArgValue(OPT_fdiagnostics_show_category, "none"); 1119 if (ShowCategory == "none") 1120 Opts.ShowCategories = 0; 1121 else if (ShowCategory == "id") 1122 Opts.ShowCategories = 1; 1123 else if (ShowCategory == "name") 1124 Opts.ShowCategories = 2; 1125 else { 1126 Success = false; 1127 if (Diags) 1128 Diags->Report(diag::err_drv_invalid_value) 1129 << Args.getLastArg(OPT_fdiagnostics_show_category)->getAsString(Args) 1130 << ShowCategory; 1131 } 1132 1133 StringRef Format = 1134 Args.getLastArgValue(OPT_fdiagnostics_format, "clang"); 1135 if (Format == "clang") 1136 Opts.setFormat(DiagnosticOptions::Clang); 1137 else if (Format == "msvc") 1138 Opts.setFormat(DiagnosticOptions::MSVC); 1139 else if (Format == "msvc-fallback") { 1140 Opts.setFormat(DiagnosticOptions::MSVC); 1141 Opts.CLFallbackMode = true; 1142 } else if (Format == "vi") 1143 Opts.setFormat(DiagnosticOptions::Vi); 1144 else { 1145 Success = false; 1146 if (Diags) 1147 Diags->Report(diag::err_drv_invalid_value) 1148 << Args.getLastArg(OPT_fdiagnostics_format)->getAsString(Args) 1149 << Format; 1150 } 1151 1152 Opts.ShowSourceRanges = Args.hasArg(OPT_fdiagnostics_print_source_range_info); 1153 Opts.ShowParseableFixits = Args.hasArg(OPT_fdiagnostics_parseable_fixits); 1154 Opts.ShowPresumedLoc = !Args.hasArg(OPT_fno_diagnostics_use_presumed_location); 1155 Opts.VerifyDiagnostics = Args.hasArg(OPT_verify); 1156 DiagnosticLevelMask DiagMask = DiagnosticLevelMask::None; 1157 Success &= parseDiagnosticLevelMask("-verify-ignore-unexpected=", 1158 Args.getAllArgValues(OPT_verify_ignore_unexpected_EQ), 1159 Diags, DiagMask); 1160 if (Args.hasArg(OPT_verify_ignore_unexpected)) 1161 DiagMask = DiagnosticLevelMask::All; 1162 Opts.setVerifyIgnoreUnexpected(DiagMask); 1163 Opts.ElideType = !Args.hasArg(OPT_fno_elide_type); 1164 Opts.ShowTemplateTree = Args.hasArg(OPT_fdiagnostics_show_template_tree); 1165 Opts.ErrorLimit = getLastArgIntValue(Args, OPT_ferror_limit, 0, Diags); 1166 Opts.MacroBacktraceLimit = 1167 getLastArgIntValue(Args, OPT_fmacro_backtrace_limit, 1168 DiagnosticOptions::DefaultMacroBacktraceLimit, Diags); 1169 Opts.TemplateBacktraceLimit = getLastArgIntValue( 1170 Args, OPT_ftemplate_backtrace_limit, 1171 DiagnosticOptions::DefaultTemplateBacktraceLimit, Diags); 1172 Opts.ConstexprBacktraceLimit = getLastArgIntValue( 1173 Args, OPT_fconstexpr_backtrace_limit, 1174 DiagnosticOptions::DefaultConstexprBacktraceLimit, Diags); 1175 Opts.SpellCheckingLimit = getLastArgIntValue( 1176 Args, OPT_fspell_checking_limit, 1177 DiagnosticOptions::DefaultSpellCheckingLimit, Diags); 1178 Opts.SnippetLineLimit = getLastArgIntValue( 1179 Args, OPT_fcaret_diagnostics_max_lines, 1180 DiagnosticOptions::DefaultSnippetLineLimit, Diags); 1181 Opts.TabStop = getLastArgIntValue(Args, OPT_ftabstop, 1182 DiagnosticOptions::DefaultTabStop, Diags); 1183 if (Opts.TabStop == 0 || Opts.TabStop > DiagnosticOptions::MaxTabStop) { 1184 Opts.TabStop = DiagnosticOptions::DefaultTabStop; 1185 if (Diags) 1186 Diags->Report(diag::warn_ignoring_ftabstop_value) 1187 << Opts.TabStop << DiagnosticOptions::DefaultTabStop; 1188 } 1189 Opts.MessageLength = getLastArgIntValue(Args, OPT_fmessage_length, 0, Diags); 1190 addDiagnosticArgs(Args, OPT_W_Group, OPT_W_value_Group, Opts.Warnings); 1191 addDiagnosticArgs(Args, OPT_R_Group, OPT_R_value_Group, Opts.Remarks); 1192 1193 return Success; 1194 } 1195 1196 static void ParseFileSystemArgs(FileSystemOptions &Opts, ArgList &Args) { 1197 Opts.WorkingDir = Args.getLastArgValue(OPT_working_directory); 1198 } 1199 1200 /// Parse the argument to the -ftest-module-file-extension 1201 /// command-line argument. 1202 /// 1203 /// \returns true on error, false on success. 1204 static bool parseTestModuleFileExtensionArg(StringRef Arg, 1205 std::string &BlockName, 1206 unsigned &MajorVersion, 1207 unsigned &MinorVersion, 1208 bool &Hashed, 1209 std::string &UserInfo) { 1210 SmallVector<StringRef, 5> Args; 1211 Arg.split(Args, ':', 5); 1212 if (Args.size() < 5) 1213 return true; 1214 1215 BlockName = Args[0]; 1216 if (Args[1].getAsInteger(10, MajorVersion)) return true; 1217 if (Args[2].getAsInteger(10, MinorVersion)) return true; 1218 if (Args[3].getAsInteger(2, Hashed)) return true; 1219 if (Args.size() > 4) 1220 UserInfo = Args[4]; 1221 return false; 1222 } 1223 1224 static InputKind ParseFrontendArgs(FrontendOptions &Opts, ArgList &Args, 1225 DiagnosticsEngine &Diags, 1226 bool &IsHeaderFile) { 1227 using namespace options; 1228 Opts.ProgramAction = frontend::ParseSyntaxOnly; 1229 if (const Arg *A = Args.getLastArg(OPT_Action_Group)) { 1230 switch (A->getOption().getID()) { 1231 default: 1232 llvm_unreachable("Invalid option in group!"); 1233 case OPT_ast_list: 1234 Opts.ProgramAction = frontend::ASTDeclList; break; 1235 case OPT_ast_dump: 1236 case OPT_ast_dump_all: 1237 case OPT_ast_dump_lookups: 1238 Opts.ProgramAction = frontend::ASTDump; break; 1239 case OPT_ast_print: 1240 Opts.ProgramAction = frontend::ASTPrint; break; 1241 case OPT_ast_view: 1242 Opts.ProgramAction = frontend::ASTView; break; 1243 case OPT_dump_raw_tokens: 1244 Opts.ProgramAction = frontend::DumpRawTokens; break; 1245 case OPT_dump_tokens: 1246 Opts.ProgramAction = frontend::DumpTokens; break; 1247 case OPT_S: 1248 Opts.ProgramAction = frontend::EmitAssembly; break; 1249 case OPT_emit_llvm_bc: 1250 Opts.ProgramAction = frontend::EmitBC; break; 1251 case OPT_emit_html: 1252 Opts.ProgramAction = frontend::EmitHTML; break; 1253 case OPT_emit_llvm: 1254 Opts.ProgramAction = frontend::EmitLLVM; break; 1255 case OPT_emit_llvm_only: 1256 Opts.ProgramAction = frontend::EmitLLVMOnly; break; 1257 case OPT_emit_codegen_only: 1258 Opts.ProgramAction = frontend::EmitCodeGenOnly; break; 1259 case OPT_emit_obj: 1260 Opts.ProgramAction = frontend::EmitObj; break; 1261 case OPT_fixit_EQ: 1262 Opts.FixItSuffix = A->getValue(); 1263 // fall-through! 1264 case OPT_fixit: 1265 Opts.ProgramAction = frontend::FixIt; break; 1266 case OPT_emit_module: 1267 Opts.ProgramAction = frontend::GenerateModule; break; 1268 case OPT_emit_module_interface: 1269 Opts.ProgramAction = frontend::GenerateModuleInterface; break; 1270 case OPT_emit_pch: 1271 Opts.ProgramAction = frontend::GeneratePCH; break; 1272 case OPT_emit_pth: 1273 Opts.ProgramAction = frontend::GeneratePTH; break; 1274 case OPT_init_only: 1275 Opts.ProgramAction = frontend::InitOnly; break; 1276 case OPT_fsyntax_only: 1277 Opts.ProgramAction = frontend::ParseSyntaxOnly; break; 1278 case OPT_module_file_info: 1279 Opts.ProgramAction = frontend::ModuleFileInfo; break; 1280 case OPT_verify_pch: 1281 Opts.ProgramAction = frontend::VerifyPCH; break; 1282 case OPT_print_decl_contexts: 1283 Opts.ProgramAction = frontend::PrintDeclContext; break; 1284 case OPT_print_preamble: 1285 Opts.ProgramAction = frontend::PrintPreamble; break; 1286 case OPT_E: 1287 Opts.ProgramAction = frontend::PrintPreprocessedInput; break; 1288 case OPT_rewrite_macros: 1289 Opts.ProgramAction = frontend::RewriteMacros; break; 1290 case OPT_rewrite_objc: 1291 Opts.ProgramAction = frontend::RewriteObjC; break; 1292 case OPT_rewrite_test: 1293 Opts.ProgramAction = frontend::RewriteTest; break; 1294 case OPT_analyze: 1295 Opts.ProgramAction = frontend::RunAnalysis; break; 1296 case OPT_migrate: 1297 Opts.ProgramAction = frontend::MigrateSource; break; 1298 case OPT_Eonly: 1299 Opts.ProgramAction = frontend::RunPreprocessorOnly; break; 1300 } 1301 } 1302 1303 if (const Arg* A = Args.getLastArg(OPT_plugin)) { 1304 Opts.Plugins.emplace_back(A->getValue(0)); 1305 Opts.ProgramAction = frontend::PluginAction; 1306 Opts.ActionName = A->getValue(); 1307 } 1308 Opts.AddPluginActions = Args.getAllArgValues(OPT_add_plugin); 1309 for (const Arg *AA : Args.filtered(OPT_plugin_arg)) 1310 Opts.PluginArgs[AA->getValue(0)].emplace_back(AA->getValue(1)); 1311 1312 for (const std::string &Arg : 1313 Args.getAllArgValues(OPT_ftest_module_file_extension_EQ)) { 1314 std::string BlockName; 1315 unsigned MajorVersion; 1316 unsigned MinorVersion; 1317 bool Hashed; 1318 std::string UserInfo; 1319 if (parseTestModuleFileExtensionArg(Arg, BlockName, MajorVersion, 1320 MinorVersion, Hashed, UserInfo)) { 1321 Diags.Report(diag::err_test_module_file_extension_format) << Arg; 1322 1323 continue; 1324 } 1325 1326 // Add the testing module file extension. 1327 Opts.ModuleFileExtensions.push_back( 1328 std::make_shared<TestModuleFileExtension>( 1329 BlockName, MajorVersion, MinorVersion, Hashed, UserInfo)); 1330 } 1331 1332 if (const Arg *A = Args.getLastArg(OPT_code_completion_at)) { 1333 Opts.CodeCompletionAt = 1334 ParsedSourceLocation::FromString(A->getValue()); 1335 if (Opts.CodeCompletionAt.FileName.empty()) 1336 Diags.Report(diag::err_drv_invalid_value) 1337 << A->getAsString(Args) << A->getValue(); 1338 } 1339 Opts.DisableFree = Args.hasArg(OPT_disable_free); 1340 1341 Opts.OutputFile = Args.getLastArgValue(OPT_o); 1342 Opts.Plugins = Args.getAllArgValues(OPT_load); 1343 Opts.RelocatablePCH = Args.hasArg(OPT_relocatable_pch); 1344 Opts.ShowHelp = Args.hasArg(OPT_help); 1345 Opts.ShowStats = Args.hasArg(OPT_print_stats); 1346 Opts.ShowTimers = Args.hasArg(OPT_ftime_report); 1347 Opts.ShowVersion = Args.hasArg(OPT_version); 1348 Opts.ASTMergeFiles = Args.getAllArgValues(OPT_ast_merge); 1349 Opts.LLVMArgs = Args.getAllArgValues(OPT_mllvm); 1350 Opts.FixWhatYouCan = Args.hasArg(OPT_fix_what_you_can); 1351 Opts.FixOnlyWarnings = Args.hasArg(OPT_fix_only_warnings); 1352 Opts.FixAndRecompile = Args.hasArg(OPT_fixit_recompile); 1353 Opts.FixToTemporaries = Args.hasArg(OPT_fixit_to_temp); 1354 Opts.ASTDumpDecls = Args.hasArg(OPT_ast_dump); 1355 Opts.ASTDumpAll = Args.hasArg(OPT_ast_dump_all); 1356 Opts.ASTDumpFilter = Args.getLastArgValue(OPT_ast_dump_filter); 1357 Opts.ASTDumpLookups = Args.hasArg(OPT_ast_dump_lookups); 1358 Opts.UseGlobalModuleIndex = !Args.hasArg(OPT_fno_modules_global_index); 1359 Opts.GenerateGlobalModuleIndex = Opts.UseGlobalModuleIndex; 1360 Opts.ModuleMapFiles = Args.getAllArgValues(OPT_fmodule_map_file); 1361 // Only the -fmodule-file=<file> form. 1362 for (const Arg *A : Args.filtered(OPT_fmodule_file)) { 1363 StringRef Val = A->getValue(); 1364 if (Val.find('=') == StringRef::npos) 1365 Opts.ModuleFiles.push_back(Val); 1366 } 1367 Opts.ModulesEmbedFiles = Args.getAllArgValues(OPT_fmodules_embed_file_EQ); 1368 Opts.ModulesEmbedAllFiles = Args.hasArg(OPT_fmodules_embed_all_files); 1369 Opts.IncludeTimestamps = !Args.hasArg(OPT_fno_pch_timestamp); 1370 1371 Opts.CodeCompleteOpts.IncludeMacros 1372 = Args.hasArg(OPT_code_completion_macros); 1373 Opts.CodeCompleteOpts.IncludeCodePatterns 1374 = Args.hasArg(OPT_code_completion_patterns); 1375 Opts.CodeCompleteOpts.IncludeGlobals 1376 = !Args.hasArg(OPT_no_code_completion_globals); 1377 Opts.CodeCompleteOpts.IncludeBriefComments 1378 = Args.hasArg(OPT_code_completion_brief_comments); 1379 1380 Opts.OverrideRecordLayoutsFile 1381 = Args.getLastArgValue(OPT_foverride_record_layout_EQ); 1382 Opts.AuxTriple = 1383 llvm::Triple::normalize(Args.getLastArgValue(OPT_aux_triple)); 1384 Opts.FindPchSource = Args.getLastArgValue(OPT_find_pch_source_EQ); 1385 Opts.StatsFile = Args.getLastArgValue(OPT_stats_file); 1386 1387 if (const Arg *A = Args.getLastArg(OPT_arcmt_check, 1388 OPT_arcmt_modify, 1389 OPT_arcmt_migrate)) { 1390 switch (A->getOption().getID()) { 1391 default: 1392 llvm_unreachable("missed a case"); 1393 case OPT_arcmt_check: 1394 Opts.ARCMTAction = FrontendOptions::ARCMT_Check; 1395 break; 1396 case OPT_arcmt_modify: 1397 Opts.ARCMTAction = FrontendOptions::ARCMT_Modify; 1398 break; 1399 case OPT_arcmt_migrate: 1400 Opts.ARCMTAction = FrontendOptions::ARCMT_Migrate; 1401 break; 1402 } 1403 } 1404 Opts.MTMigrateDir = Args.getLastArgValue(OPT_mt_migrate_directory); 1405 Opts.ARCMTMigrateReportOut 1406 = Args.getLastArgValue(OPT_arcmt_migrate_report_output); 1407 Opts.ARCMTMigrateEmitARCErrors 1408 = Args.hasArg(OPT_arcmt_migrate_emit_arc_errors); 1409 1410 if (Args.hasArg(OPT_objcmt_migrate_literals)) 1411 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_Literals; 1412 if (Args.hasArg(OPT_objcmt_migrate_subscripting)) 1413 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_Subscripting; 1414 if (Args.hasArg(OPT_objcmt_migrate_property_dot_syntax)) 1415 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_PropertyDotSyntax; 1416 if (Args.hasArg(OPT_objcmt_migrate_property)) 1417 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_Property; 1418 if (Args.hasArg(OPT_objcmt_migrate_readonly_property)) 1419 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_ReadonlyProperty; 1420 if (Args.hasArg(OPT_objcmt_migrate_readwrite_property)) 1421 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_ReadwriteProperty; 1422 if (Args.hasArg(OPT_objcmt_migrate_annotation)) 1423 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_Annotation; 1424 if (Args.hasArg(OPT_objcmt_returns_innerpointer_property)) 1425 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_ReturnsInnerPointerProperty; 1426 if (Args.hasArg(OPT_objcmt_migrate_instancetype)) 1427 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_Instancetype; 1428 if (Args.hasArg(OPT_objcmt_migrate_nsmacros)) 1429 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_NsMacros; 1430 if (Args.hasArg(OPT_objcmt_migrate_protocol_conformance)) 1431 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_ProtocolConformance; 1432 if (Args.hasArg(OPT_objcmt_atomic_property)) 1433 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_AtomicProperty; 1434 if (Args.hasArg(OPT_objcmt_ns_nonatomic_iosonly)) 1435 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_NsAtomicIOSOnlyProperty; 1436 if (Args.hasArg(OPT_objcmt_migrate_designated_init)) 1437 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_DesignatedInitializer; 1438 if (Args.hasArg(OPT_objcmt_migrate_all)) 1439 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_MigrateDecls; 1440 1441 Opts.ObjCMTWhiteListPath = Args.getLastArgValue(OPT_objcmt_whitelist_dir_path); 1442 1443 if (Opts.ARCMTAction != FrontendOptions::ARCMT_None && 1444 Opts.ObjCMTAction != FrontendOptions::ObjCMT_None) { 1445 Diags.Report(diag::err_drv_argument_not_allowed_with) 1446 << "ARC migration" << "ObjC migration"; 1447 } 1448 1449 InputKind DashX(InputKind::Unknown); 1450 if (const Arg *A = Args.getLastArg(OPT_x)) { 1451 StringRef XValue = A->getValue(); 1452 1453 // Parse suffixes: '<lang>(-header|[-module-map][-cpp-output])'. 1454 // FIXME: Supporting '<lang>-header-cpp-output' would be useful. 1455 bool Preprocessed = XValue.consume_back("-cpp-output"); 1456 bool ModuleMap = XValue.consume_back("-module-map"); 1457 IsHeaderFile = 1458 !Preprocessed && !ModuleMap && XValue.consume_back("-header"); 1459 1460 // Principal languages. 1461 DashX = llvm::StringSwitch<InputKind>(XValue) 1462 .Case("c", InputKind::C) 1463 .Case("cl", InputKind::OpenCL) 1464 .Case("cuda", InputKind::CUDA) 1465 .Case("c++", InputKind::CXX) 1466 .Case("objective-c", InputKind::ObjC) 1467 .Case("objective-c++", InputKind::ObjCXX) 1468 .Case("renderscript", InputKind::RenderScript) 1469 .Default(InputKind::Unknown); 1470 1471 // "objc[++]-cpp-output" is an acceptable synonym for 1472 // "objective-c[++]-cpp-output". 1473 if (DashX.isUnknown() && Preprocessed && !IsHeaderFile && !ModuleMap) 1474 DashX = llvm::StringSwitch<InputKind>(XValue) 1475 .Case("objc", InputKind::ObjC) 1476 .Case("objc++", InputKind::ObjCXX) 1477 .Default(InputKind::Unknown); 1478 1479 // Some special cases cannot be combined with suffixes. 1480 if (DashX.isUnknown() && !Preprocessed && !ModuleMap && !IsHeaderFile) 1481 DashX = llvm::StringSwitch<InputKind>(XValue) 1482 .Case("cpp-output", InputKind(InputKind::C).getPreprocessed()) 1483 .Case("assembler-with-cpp", InputKind::Asm) 1484 .Cases("ast", "pcm", 1485 InputKind(InputKind::Unknown, InputKind::Precompiled)) 1486 .Case("ir", InputKind::LLVM_IR) 1487 .Default(InputKind::Unknown); 1488 1489 if (DashX.isUnknown()) 1490 Diags.Report(diag::err_drv_invalid_value) 1491 << A->getAsString(Args) << A->getValue(); 1492 1493 if (Preprocessed) 1494 DashX = DashX.getPreprocessed(); 1495 if (ModuleMap) 1496 DashX = DashX.withFormat(InputKind::ModuleMap); 1497 } 1498 1499 // '-' is the default input if none is given. 1500 std::vector<std::string> Inputs = Args.getAllArgValues(OPT_INPUT); 1501 Opts.Inputs.clear(); 1502 if (Inputs.empty()) 1503 Inputs.push_back("-"); 1504 for (unsigned i = 0, e = Inputs.size(); i != e; ++i) { 1505 InputKind IK = DashX; 1506 if (IK.isUnknown()) { 1507 IK = FrontendOptions::getInputKindForExtension( 1508 StringRef(Inputs[i]).rsplit('.').second); 1509 // FIXME: Warn on this? 1510 if (IK.isUnknown()) 1511 IK = InputKind::C; 1512 // FIXME: Remove this hack. 1513 if (i == 0) 1514 DashX = IK; 1515 } 1516 1517 // The -emit-module action implicitly takes a module map. 1518 if (Opts.ProgramAction == frontend::GenerateModule && 1519 IK.getFormat() == InputKind::Source) 1520 IK = IK.withFormat(InputKind::ModuleMap); 1521 1522 Opts.Inputs.emplace_back(std::move(Inputs[i]), IK); 1523 } 1524 1525 return DashX; 1526 } 1527 1528 std::string CompilerInvocation::GetResourcesPath(const char *Argv0, 1529 void *MainAddr) { 1530 std::string ClangExecutable = 1531 llvm::sys::fs::getMainExecutable(Argv0, MainAddr); 1532 StringRef Dir = llvm::sys::path::parent_path(ClangExecutable); 1533 1534 // Compute the path to the resource directory. 1535 StringRef ClangResourceDir(CLANG_RESOURCE_DIR); 1536 SmallString<128> P(Dir); 1537 if (ClangResourceDir != "") 1538 llvm::sys::path::append(P, ClangResourceDir); 1539 else 1540 llvm::sys::path::append(P, "..", Twine("lib") + CLANG_LIBDIR_SUFFIX, 1541 "clang", CLANG_VERSION_STRING); 1542 1543 return P.str(); 1544 } 1545 1546 static void ParseHeaderSearchArgs(HeaderSearchOptions &Opts, ArgList &Args, 1547 const std::string &WorkingDir) { 1548 using namespace options; 1549 Opts.Sysroot = Args.getLastArgValue(OPT_isysroot, "/"); 1550 Opts.Verbose = Args.hasArg(OPT_v); 1551 Opts.UseBuiltinIncludes = !Args.hasArg(OPT_nobuiltininc); 1552 Opts.UseStandardSystemIncludes = !Args.hasArg(OPT_nostdsysteminc); 1553 Opts.UseStandardCXXIncludes = !Args.hasArg(OPT_nostdincxx); 1554 if (const Arg *A = Args.getLastArg(OPT_stdlib_EQ)) 1555 Opts.UseLibcxx = (strcmp(A->getValue(), "libc++") == 0); 1556 Opts.ResourceDir = Args.getLastArgValue(OPT_resource_dir); 1557 1558 // Canonicalize -fmodules-cache-path before storing it. 1559 SmallString<128> P(Args.getLastArgValue(OPT_fmodules_cache_path)); 1560 if (!(P.empty() || llvm::sys::path::is_absolute(P))) { 1561 if (WorkingDir.empty()) 1562 llvm::sys::fs::make_absolute(P); 1563 else 1564 llvm::sys::fs::make_absolute(WorkingDir, P); 1565 } 1566 llvm::sys::path::remove_dots(P); 1567 Opts.ModuleCachePath = P.str(); 1568 1569 Opts.ModuleUserBuildPath = Args.getLastArgValue(OPT_fmodules_user_build_path); 1570 // Only the -fmodule-file=<name>=<file> form. 1571 for (const Arg *A : Args.filtered(OPT_fmodule_file)) { 1572 StringRef Val = A->getValue(); 1573 if (Val.find('=') != StringRef::npos) 1574 Opts.PrebuiltModuleFiles.insert(Val.split('=')); 1575 } 1576 for (const Arg *A : Args.filtered(OPT_fprebuilt_module_path)) 1577 Opts.AddPrebuiltModulePath(A->getValue()); 1578 Opts.DisableModuleHash = Args.hasArg(OPT_fdisable_module_hash); 1579 Opts.ModulesHashContent = Args.hasArg(OPT_fmodules_hash_content); 1580 Opts.ModulesValidateDiagnosticOptions = 1581 !Args.hasArg(OPT_fmodules_disable_diagnostic_validation); 1582 Opts.ImplicitModuleMaps = Args.hasArg(OPT_fimplicit_module_maps); 1583 Opts.ModuleMapFileHomeIsCwd = Args.hasArg(OPT_fmodule_map_file_home_is_cwd); 1584 Opts.ModuleCachePruneInterval = 1585 getLastArgIntValue(Args, OPT_fmodules_prune_interval, 7 * 24 * 60 * 60); 1586 Opts.ModuleCachePruneAfter = 1587 getLastArgIntValue(Args, OPT_fmodules_prune_after, 31 * 24 * 60 * 60); 1588 Opts.ModulesValidateOncePerBuildSession = 1589 Args.hasArg(OPT_fmodules_validate_once_per_build_session); 1590 Opts.BuildSessionTimestamp = 1591 getLastArgUInt64Value(Args, OPT_fbuild_session_timestamp, 0); 1592 Opts.ModulesValidateSystemHeaders = 1593 Args.hasArg(OPT_fmodules_validate_system_headers); 1594 if (const Arg *A = Args.getLastArg(OPT_fmodule_format_EQ)) 1595 Opts.ModuleFormat = A->getValue(); 1596 1597 for (const Arg *A : Args.filtered(OPT_fmodules_ignore_macro)) { 1598 StringRef MacroDef = A->getValue(); 1599 Opts.ModulesIgnoreMacros.insert( 1600 llvm::CachedHashString(MacroDef.split('=').first)); 1601 } 1602 1603 // Add -I..., -F..., and -index-header-map options in order. 1604 bool IsIndexHeaderMap = false; 1605 bool IsSysrootSpecified = 1606 Args.hasArg(OPT__sysroot_EQ) || Args.hasArg(OPT_isysroot); 1607 for (const Arg *A : Args.filtered(OPT_I, OPT_F, OPT_index_header_map)) { 1608 if (A->getOption().matches(OPT_index_header_map)) { 1609 // -index-header-map applies to the next -I or -F. 1610 IsIndexHeaderMap = true; 1611 continue; 1612 } 1613 1614 frontend::IncludeDirGroup Group = 1615 IsIndexHeaderMap ? frontend::IndexHeaderMap : frontend::Angled; 1616 1617 bool IsFramework = A->getOption().matches(OPT_F); 1618 std::string Path = A->getValue(); 1619 1620 if (IsSysrootSpecified && !IsFramework && A->getValue()[0] == '=') { 1621 SmallString<32> Buffer; 1622 llvm::sys::path::append(Buffer, Opts.Sysroot, 1623 llvm::StringRef(A->getValue()).substr(1)); 1624 Path = Buffer.str(); 1625 } 1626 1627 Opts.AddPath(Path, Group, IsFramework, 1628 /*IgnoreSysroot*/ true); 1629 IsIndexHeaderMap = false; 1630 } 1631 1632 // Add -iprefix/-iwithprefix/-iwithprefixbefore options. 1633 StringRef Prefix = ""; // FIXME: This isn't the correct default prefix. 1634 for (const Arg *A : 1635 Args.filtered(OPT_iprefix, OPT_iwithprefix, OPT_iwithprefixbefore)) { 1636 if (A->getOption().matches(OPT_iprefix)) 1637 Prefix = A->getValue(); 1638 else if (A->getOption().matches(OPT_iwithprefix)) 1639 Opts.AddPath(Prefix.str() + A->getValue(), frontend::After, false, true); 1640 else 1641 Opts.AddPath(Prefix.str() + A->getValue(), frontend::Angled, false, true); 1642 } 1643 1644 for (const Arg *A : Args.filtered(OPT_idirafter)) 1645 Opts.AddPath(A->getValue(), frontend::After, false, true); 1646 for (const Arg *A : Args.filtered(OPT_iquote)) 1647 Opts.AddPath(A->getValue(), frontend::Quoted, false, true); 1648 for (const Arg *A : Args.filtered(OPT_isystem, OPT_iwithsysroot)) 1649 Opts.AddPath(A->getValue(), frontend::System, false, 1650 !A->getOption().matches(OPT_iwithsysroot)); 1651 for (const Arg *A : Args.filtered(OPT_iframework)) 1652 Opts.AddPath(A->getValue(), frontend::System, true, true); 1653 for (const Arg *A : Args.filtered(OPT_iframeworkwithsysroot)) 1654 Opts.AddPath(A->getValue(), frontend::System, /*IsFramework=*/true, 1655 /*IgnoreSysRoot=*/false); 1656 1657 // Add the paths for the various language specific isystem flags. 1658 for (const Arg *A : Args.filtered(OPT_c_isystem)) 1659 Opts.AddPath(A->getValue(), frontend::CSystem, false, true); 1660 for (const Arg *A : Args.filtered(OPT_cxx_isystem)) 1661 Opts.AddPath(A->getValue(), frontend::CXXSystem, false, true); 1662 for (const Arg *A : Args.filtered(OPT_objc_isystem)) 1663 Opts.AddPath(A->getValue(), frontend::ObjCSystem, false,true); 1664 for (const Arg *A : Args.filtered(OPT_objcxx_isystem)) 1665 Opts.AddPath(A->getValue(), frontend::ObjCXXSystem, false, true); 1666 1667 // Add the internal paths from a driver that detects standard include paths. 1668 for (const Arg *A : 1669 Args.filtered(OPT_internal_isystem, OPT_internal_externc_isystem)) { 1670 frontend::IncludeDirGroup Group = frontend::System; 1671 if (A->getOption().matches(OPT_internal_externc_isystem)) 1672 Group = frontend::ExternCSystem; 1673 Opts.AddPath(A->getValue(), Group, false, true); 1674 } 1675 1676 // Add the path prefixes which are implicitly treated as being system headers. 1677 for (const Arg *A : 1678 Args.filtered(OPT_system_header_prefix, OPT_no_system_header_prefix)) 1679 Opts.AddSystemHeaderPrefix( 1680 A->getValue(), A->getOption().matches(OPT_system_header_prefix)); 1681 1682 for (const Arg *A : Args.filtered(OPT_ivfsoverlay)) 1683 Opts.AddVFSOverlayFile(A->getValue()); 1684 } 1685 1686 void CompilerInvocation::setLangDefaults(LangOptions &Opts, InputKind IK, 1687 const llvm::Triple &T, 1688 PreprocessorOptions &PPOpts, 1689 LangStandard::Kind LangStd) { 1690 // Set some properties which depend solely on the input kind; it would be nice 1691 // to move these to the language standard, and have the driver resolve the 1692 // input kind + language standard. 1693 // 1694 // FIXME: Perhaps a better model would be for a single source file to have 1695 // multiple language standards (C / C++ std, ObjC std, OpenCL std, OpenMP std) 1696 // simultaneously active? 1697 if (IK.getLanguage() == InputKind::Asm) { 1698 Opts.AsmPreprocessor = 1; 1699 } else if (IK.isObjectiveC()) { 1700 Opts.ObjC1 = Opts.ObjC2 = 1; 1701 } 1702 1703 if (LangStd == LangStandard::lang_unspecified) { 1704 // Based on the base language, pick one. 1705 switch (IK.getLanguage()) { 1706 case InputKind::Unknown: 1707 case InputKind::LLVM_IR: 1708 llvm_unreachable("Invalid input kind!"); 1709 case InputKind::OpenCL: 1710 LangStd = LangStandard::lang_opencl10; 1711 break; 1712 case InputKind::CUDA: 1713 LangStd = LangStandard::lang_cuda; 1714 break; 1715 case InputKind::Asm: 1716 case InputKind::C: 1717 // The PS4 uses C99 as the default C standard. 1718 if (T.isPS4()) 1719 LangStd = LangStandard::lang_gnu99; 1720 else 1721 LangStd = LangStandard::lang_gnu11; 1722 break; 1723 case InputKind::ObjC: 1724 LangStd = LangStandard::lang_gnu11; 1725 break; 1726 case InputKind::CXX: 1727 case InputKind::ObjCXX: 1728 // The PS4 uses C++11 as the default C++ standard. 1729 if (T.isPS4()) 1730 LangStd = LangStandard::lang_gnucxx11; 1731 else 1732 LangStd = LangStandard::lang_gnucxx98; 1733 break; 1734 case InputKind::RenderScript: 1735 LangStd = LangStandard::lang_c99; 1736 break; 1737 } 1738 } 1739 1740 const LangStandard &Std = LangStandard::getLangStandardForKind(LangStd); 1741 Opts.LineComment = Std.hasLineComments(); 1742 Opts.C99 = Std.isC99(); 1743 Opts.C11 = Std.isC11(); 1744 Opts.CPlusPlus = Std.isCPlusPlus(); 1745 Opts.CPlusPlus11 = Std.isCPlusPlus11(); 1746 Opts.CPlusPlus14 = Std.isCPlusPlus14(); 1747 Opts.CPlusPlus1z = Std.isCPlusPlus1z(); 1748 Opts.CPlusPlus2a = Std.isCPlusPlus2a(); 1749 Opts.Digraphs = Std.hasDigraphs(); 1750 Opts.GNUMode = Std.isGNUMode(); 1751 Opts.GNUInline = !Opts.C99 && !Opts.CPlusPlus; 1752 Opts.HexFloats = Std.hasHexFloats(); 1753 Opts.ImplicitInt = Std.hasImplicitInt(); 1754 1755 // Set OpenCL Version. 1756 Opts.OpenCL = Std.isOpenCL(); 1757 if (LangStd == LangStandard::lang_opencl10) 1758 Opts.OpenCLVersion = 100; 1759 else if (LangStd == LangStandard::lang_opencl11) 1760 Opts.OpenCLVersion = 110; 1761 else if (LangStd == LangStandard::lang_opencl12) 1762 Opts.OpenCLVersion = 120; 1763 else if (LangStd == LangStandard::lang_opencl20) 1764 Opts.OpenCLVersion = 200; 1765 1766 // OpenCL has some additional defaults. 1767 if (Opts.OpenCL) { 1768 Opts.AltiVec = 0; 1769 Opts.ZVector = 0; 1770 Opts.LaxVectorConversions = 0; 1771 Opts.setDefaultFPContractMode(LangOptions::FPC_On); 1772 Opts.NativeHalfType = 1; 1773 Opts.NativeHalfArgsAndReturns = 1; 1774 // Include default header file for OpenCL. 1775 if (Opts.IncludeDefaultHeader) { 1776 PPOpts.Includes.push_back("opencl-c.h"); 1777 } 1778 } 1779 1780 Opts.CUDA = IK.getLanguage() == InputKind::CUDA; 1781 if (Opts.CUDA) 1782 // Set default FP_CONTRACT to FAST. 1783 Opts.setDefaultFPContractMode(LangOptions::FPC_Fast); 1784 1785 Opts.RenderScript = IK.getLanguage() == InputKind::RenderScript; 1786 if (Opts.RenderScript) { 1787 Opts.NativeHalfType = 1; 1788 Opts.NativeHalfArgsAndReturns = 1; 1789 } 1790 1791 // OpenCL and C++ both have bool, true, false keywords. 1792 Opts.Bool = Opts.OpenCL || Opts.CPlusPlus; 1793 1794 // OpenCL has half keyword 1795 Opts.Half = Opts.OpenCL; 1796 1797 // C++ has wchar_t keyword. 1798 Opts.WChar = Opts.CPlusPlus; 1799 1800 Opts.GNUKeywords = Opts.GNUMode; 1801 Opts.CXXOperatorNames = Opts.CPlusPlus; 1802 1803 Opts.AlignedAllocation = Opts.CPlusPlus1z; 1804 1805 Opts.DollarIdents = !Opts.AsmPreprocessor; 1806 } 1807 1808 /// Attempt to parse a visibility value out of the given argument. 1809 static Visibility parseVisibility(Arg *arg, ArgList &args, 1810 DiagnosticsEngine &diags) { 1811 StringRef value = arg->getValue(); 1812 if (value == "default") { 1813 return DefaultVisibility; 1814 } else if (value == "hidden" || value == "internal") { 1815 return HiddenVisibility; 1816 } else if (value == "protected") { 1817 // FIXME: diagnose if target does not support protected visibility 1818 return ProtectedVisibility; 1819 } 1820 1821 diags.Report(diag::err_drv_invalid_value) 1822 << arg->getAsString(args) << value; 1823 return DefaultVisibility; 1824 } 1825 1826 /// Check if input file kind and language standard are compatible. 1827 static bool IsInputCompatibleWithStandard(InputKind IK, 1828 const LangStandard &S) { 1829 switch (IK.getLanguage()) { 1830 case InputKind::Unknown: 1831 case InputKind::LLVM_IR: 1832 llvm_unreachable("should not parse language flags for this input"); 1833 1834 case InputKind::C: 1835 case InputKind::ObjC: 1836 case InputKind::RenderScript: 1837 return S.getLanguage() == InputKind::C; 1838 1839 case InputKind::OpenCL: 1840 return S.getLanguage() == InputKind::OpenCL; 1841 1842 case InputKind::CXX: 1843 case InputKind::ObjCXX: 1844 return S.getLanguage() == InputKind::CXX; 1845 1846 case InputKind::CUDA: 1847 // FIXME: What -std= values should be permitted for CUDA compilations? 1848 return S.getLanguage() == InputKind::CUDA || 1849 S.getLanguage() == InputKind::CXX; 1850 1851 case InputKind::Asm: 1852 // Accept (and ignore) all -std= values. 1853 // FIXME: The -std= value is not ignored; it affects the tokenization 1854 // and preprocessing rules if we're preprocessing this asm input. 1855 return true; 1856 } 1857 1858 llvm_unreachable("unexpected input language"); 1859 } 1860 1861 /// Get language name for given input kind. 1862 static const StringRef GetInputKindName(InputKind IK) { 1863 switch (IK.getLanguage()) { 1864 case InputKind::C: 1865 return "C"; 1866 case InputKind::ObjC: 1867 return "Objective-C"; 1868 case InputKind::CXX: 1869 return "C++"; 1870 case InputKind::ObjCXX: 1871 return "Objective-C++"; 1872 case InputKind::OpenCL: 1873 return "OpenCL"; 1874 case InputKind::CUDA: 1875 return "CUDA"; 1876 case InputKind::RenderScript: 1877 return "RenderScript"; 1878 1879 case InputKind::Asm: 1880 return "Asm"; 1881 case InputKind::LLVM_IR: 1882 return "LLVM IR"; 1883 1884 case InputKind::Unknown: 1885 break; 1886 } 1887 llvm_unreachable("unknown input language"); 1888 } 1889 1890 static void ParseLangArgs(LangOptions &Opts, ArgList &Args, InputKind IK, 1891 const TargetOptions &TargetOpts, 1892 PreprocessorOptions &PPOpts, 1893 DiagnosticsEngine &Diags) { 1894 // FIXME: Cleanup per-file based stuff. 1895 LangStandard::Kind LangStd = LangStandard::lang_unspecified; 1896 if (const Arg *A = Args.getLastArg(OPT_std_EQ)) { 1897 LangStd = llvm::StringSwitch<LangStandard::Kind>(A->getValue()) 1898 #define LANGSTANDARD(id, name, lang, desc, features) \ 1899 .Case(name, LangStandard::lang_##id) 1900 #define LANGSTANDARD_ALIAS(id, alias) \ 1901 .Case(alias, LangStandard::lang_##id) 1902 #include "clang/Frontend/LangStandards.def" 1903 .Default(LangStandard::lang_unspecified); 1904 if (LangStd == LangStandard::lang_unspecified) { 1905 Diags.Report(diag::err_drv_invalid_value) 1906 << A->getAsString(Args) << A->getValue(); 1907 // Report supported standards with short description. 1908 for (unsigned KindValue = 0; 1909 KindValue != LangStandard::lang_unspecified; 1910 ++KindValue) { 1911 const LangStandard &Std = LangStandard::getLangStandardForKind( 1912 static_cast<LangStandard::Kind>(KindValue)); 1913 if (IsInputCompatibleWithStandard(IK, Std)) { 1914 auto Diag = Diags.Report(diag::note_drv_use_standard); 1915 Diag << Std.getName() << Std.getDescription(); 1916 unsigned NumAliases = 0; 1917 #define LANGSTANDARD(id, name, lang, desc, features) 1918 #define LANGSTANDARD_ALIAS(id, alias) \ 1919 if (KindValue == LangStandard::lang_##id) ++NumAliases; 1920 #define LANGSTANDARD_ALIAS_DEPR(id, alias) 1921 #include "clang/Frontend/LangStandards.def" 1922 Diag << NumAliases; 1923 #define LANGSTANDARD(id, name, lang, desc, features) 1924 #define LANGSTANDARD_ALIAS(id, alias) \ 1925 if (KindValue == LangStandard::lang_##id) Diag << alias; 1926 #define LANGSTANDARD_ALIAS_DEPR(id, alias) 1927 #include "clang/Frontend/LangStandards.def" 1928 } 1929 } 1930 } else { 1931 // Valid standard, check to make sure language and standard are 1932 // compatible. 1933 const LangStandard &Std = LangStandard::getLangStandardForKind(LangStd); 1934 if (!IsInputCompatibleWithStandard(IK, Std)) { 1935 Diags.Report(diag::err_drv_argument_not_allowed_with) 1936 << A->getAsString(Args) << GetInputKindName(IK); 1937 } 1938 } 1939 } 1940 1941 // -cl-std only applies for OpenCL language standards. 1942 // Override the -std option in this case. 1943 if (const Arg *A = Args.getLastArg(OPT_cl_std_EQ)) { 1944 LangStandard::Kind OpenCLLangStd 1945 = llvm::StringSwitch<LangStandard::Kind>(A->getValue()) 1946 .Cases("cl", "CL", LangStandard::lang_opencl10) 1947 .Cases("cl1.1", "CL1.1", LangStandard::lang_opencl11) 1948 .Cases("cl1.2", "CL1.2", LangStandard::lang_opencl12) 1949 .Cases("cl2.0", "CL2.0", LangStandard::lang_opencl20) 1950 .Default(LangStandard::lang_unspecified); 1951 1952 if (OpenCLLangStd == LangStandard::lang_unspecified) { 1953 Diags.Report(diag::err_drv_invalid_value) 1954 << A->getAsString(Args) << A->getValue(); 1955 } 1956 else 1957 LangStd = OpenCLLangStd; 1958 } 1959 1960 Opts.IncludeDefaultHeader = Args.hasArg(OPT_finclude_default_header); 1961 1962 llvm::Triple T(TargetOpts.Triple); 1963 CompilerInvocation::setLangDefaults(Opts, IK, T, PPOpts, LangStd); 1964 1965 // -cl-strict-aliasing needs to emit diagnostic in the case where CL > 1.0. 1966 // This option should be deprecated for CL > 1.0 because 1967 // this option was added for compatibility with OpenCL 1.0. 1968 if (Args.getLastArg(OPT_cl_strict_aliasing) 1969 && Opts.OpenCLVersion > 100) { 1970 std::string VerSpec = llvm::to_string(Opts.OpenCLVersion / 100) + 1971 std::string(".") + 1972 llvm::to_string((Opts.OpenCLVersion % 100) / 10); 1973 Diags.Report(diag::warn_option_invalid_ocl_version) 1974 << VerSpec << Args.getLastArg(OPT_cl_strict_aliasing)->getAsString(Args); 1975 } 1976 1977 // We abuse '-f[no-]gnu-keywords' to force overriding all GNU-extension 1978 // keywords. This behavior is provided by GCC's poorly named '-fasm' flag, 1979 // while a subset (the non-C++ GNU keywords) is provided by GCC's 1980 // '-fgnu-keywords'. Clang conflates the two for simplicity under the single 1981 // name, as it doesn't seem a useful distinction. 1982 Opts.GNUKeywords = Args.hasFlag(OPT_fgnu_keywords, OPT_fno_gnu_keywords, 1983 Opts.GNUKeywords); 1984 1985 if (Args.hasArg(OPT_fno_operator_names)) 1986 Opts.CXXOperatorNames = 0; 1987 1988 if (Args.hasArg(OPT_fcuda_is_device)) 1989 Opts.CUDAIsDevice = 1; 1990 1991 if (Args.hasArg(OPT_fcuda_allow_variadic_functions)) 1992 Opts.CUDAAllowVariadicFunctions = 1; 1993 1994 if (Args.hasArg(OPT_fno_cuda_host_device_constexpr)) 1995 Opts.CUDAHostDeviceConstexpr = 0; 1996 1997 if (Opts.CUDAIsDevice && Args.hasArg(OPT_fcuda_flush_denormals_to_zero)) 1998 Opts.CUDADeviceFlushDenormalsToZero = 1; 1999 2000 if (Opts.CUDAIsDevice && Args.hasArg(OPT_fcuda_approx_transcendentals)) 2001 Opts.CUDADeviceApproxTranscendentals = 1; 2002 2003 if (Opts.ObjC1) { 2004 if (Arg *arg = Args.getLastArg(OPT_fobjc_runtime_EQ)) { 2005 StringRef value = arg->getValue(); 2006 if (Opts.ObjCRuntime.tryParse(value)) 2007 Diags.Report(diag::err_drv_unknown_objc_runtime) << value; 2008 } 2009 2010 if (Args.hasArg(OPT_fobjc_gc_only)) 2011 Opts.setGC(LangOptions::GCOnly); 2012 else if (Args.hasArg(OPT_fobjc_gc)) 2013 Opts.setGC(LangOptions::HybridGC); 2014 else if (Args.hasArg(OPT_fobjc_arc)) { 2015 Opts.ObjCAutoRefCount = 1; 2016 if (!Opts.ObjCRuntime.allowsARC()) 2017 Diags.Report(diag::err_arc_unsupported_on_runtime); 2018 } 2019 2020 // ObjCWeakRuntime tracks whether the runtime supports __weak, not 2021 // whether the feature is actually enabled. This is predominantly 2022 // determined by -fobjc-runtime, but we allow it to be overridden 2023 // from the command line for testing purposes. 2024 if (Args.hasArg(OPT_fobjc_runtime_has_weak)) 2025 Opts.ObjCWeakRuntime = 1; 2026 else 2027 Opts.ObjCWeakRuntime = Opts.ObjCRuntime.allowsWeak(); 2028 2029 // ObjCWeak determines whether __weak is actually enabled. 2030 // Note that we allow -fno-objc-weak to disable this even in ARC mode. 2031 if (auto weakArg = Args.getLastArg(OPT_fobjc_weak, OPT_fno_objc_weak)) { 2032 if (!weakArg->getOption().matches(OPT_fobjc_weak)) { 2033 assert(!Opts.ObjCWeak); 2034 } else if (Opts.getGC() != LangOptions::NonGC) { 2035 Diags.Report(diag::err_objc_weak_with_gc); 2036 } else if (!Opts.ObjCWeakRuntime) { 2037 Diags.Report(diag::err_objc_weak_unsupported); 2038 } else { 2039 Opts.ObjCWeak = 1; 2040 } 2041 } else if (Opts.ObjCAutoRefCount) { 2042 Opts.ObjCWeak = Opts.ObjCWeakRuntime; 2043 } 2044 2045 if (Args.hasArg(OPT_fno_objc_infer_related_result_type)) 2046 Opts.ObjCInferRelatedResultType = 0; 2047 2048 if (Args.hasArg(OPT_fobjc_subscripting_legacy_runtime)) 2049 Opts.ObjCSubscriptingLegacyRuntime = 2050 (Opts.ObjCRuntime.getKind() == ObjCRuntime::FragileMacOSX); 2051 } 2052 2053 if (Args.hasArg(OPT_fgnu89_inline)) { 2054 if (Opts.CPlusPlus) 2055 Diags.Report(diag::err_drv_argument_not_allowed_with) 2056 << "-fgnu89-inline" << GetInputKindName(IK); 2057 else 2058 Opts.GNUInline = 1; 2059 } 2060 2061 if (Args.hasArg(OPT_fapple_kext)) { 2062 if (!Opts.CPlusPlus) 2063 Diags.Report(diag::warn_c_kext); 2064 else 2065 Opts.AppleKext = 1; 2066 } 2067 2068 if (Args.hasArg(OPT_print_ivar_layout)) 2069 Opts.ObjCGCBitmapPrint = 1; 2070 if (Args.hasArg(OPT_fno_constant_cfstrings)) 2071 Opts.NoConstantCFStrings = 1; 2072 2073 if (Args.hasArg(OPT_fzvector)) 2074 Opts.ZVector = 1; 2075 2076 if (Args.hasArg(OPT_pthread)) 2077 Opts.POSIXThreads = 1; 2078 2079 // The value-visibility mode defaults to "default". 2080 if (Arg *visOpt = Args.getLastArg(OPT_fvisibility)) { 2081 Opts.setValueVisibilityMode(parseVisibility(visOpt, Args, Diags)); 2082 } else { 2083 Opts.setValueVisibilityMode(DefaultVisibility); 2084 } 2085 2086 // The type-visibility mode defaults to the value-visibility mode. 2087 if (Arg *typeVisOpt = Args.getLastArg(OPT_ftype_visibility)) { 2088 Opts.setTypeVisibilityMode(parseVisibility(typeVisOpt, Args, Diags)); 2089 } else { 2090 Opts.setTypeVisibilityMode(Opts.getValueVisibilityMode()); 2091 } 2092 2093 if (Args.hasArg(OPT_fvisibility_inlines_hidden)) 2094 Opts.InlineVisibilityHidden = 1; 2095 2096 if (Args.hasArg(OPT_ftrapv)) { 2097 Opts.setSignedOverflowBehavior(LangOptions::SOB_Trapping); 2098 // Set the handler, if one is specified. 2099 Opts.OverflowHandler = 2100 Args.getLastArgValue(OPT_ftrapv_handler); 2101 } 2102 else if (Args.hasArg(OPT_fwrapv)) 2103 Opts.setSignedOverflowBehavior(LangOptions::SOB_Defined); 2104 2105 Opts.MSVCCompat = Args.hasArg(OPT_fms_compatibility); 2106 Opts.MicrosoftExt = Opts.MSVCCompat || Args.hasArg(OPT_fms_extensions); 2107 Opts.AsmBlocks = Args.hasArg(OPT_fasm_blocks) || Opts.MicrosoftExt; 2108 Opts.MSCompatibilityVersion = 0; 2109 if (const Arg *A = Args.getLastArg(OPT_fms_compatibility_version)) { 2110 VersionTuple VT; 2111 if (VT.tryParse(A->getValue())) 2112 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) 2113 << A->getValue(); 2114 Opts.MSCompatibilityVersion = VT.getMajor() * 10000000 + 2115 VT.getMinor().getValueOr(0) * 100000 + 2116 VT.getSubminor().getValueOr(0); 2117 } 2118 2119 // Mimicing gcc's behavior, trigraphs are only enabled if -trigraphs 2120 // is specified, or -std is set to a conforming mode. 2121 // Trigraphs are disabled by default in c++1z onwards. 2122 Opts.Trigraphs = !Opts.GNUMode && !Opts.MSVCCompat && !Opts.CPlusPlus1z; 2123 Opts.Trigraphs = 2124 Args.hasFlag(OPT_ftrigraphs, OPT_fno_trigraphs, Opts.Trigraphs); 2125 2126 Opts.DollarIdents = Args.hasFlag(OPT_fdollars_in_identifiers, 2127 OPT_fno_dollars_in_identifiers, 2128 Opts.DollarIdents); 2129 Opts.PascalStrings = Args.hasArg(OPT_fpascal_strings); 2130 Opts.VtorDispMode = getLastArgIntValue(Args, OPT_vtordisp_mode_EQ, 1, Diags); 2131 Opts.Borland = Args.hasArg(OPT_fborland_extensions); 2132 Opts.WritableStrings = Args.hasArg(OPT_fwritable_strings); 2133 Opts.ConstStrings = Args.hasFlag(OPT_fconst_strings, OPT_fno_const_strings, 2134 Opts.ConstStrings); 2135 if (Args.hasArg(OPT_fno_lax_vector_conversions)) 2136 Opts.LaxVectorConversions = 0; 2137 if (Args.hasArg(OPT_fno_threadsafe_statics)) 2138 Opts.ThreadsafeStatics = 0; 2139 Opts.Exceptions = Args.hasArg(OPT_fexceptions); 2140 Opts.ObjCExceptions = Args.hasArg(OPT_fobjc_exceptions); 2141 Opts.CXXExceptions = Args.hasArg(OPT_fcxx_exceptions); 2142 Opts.SjLjExceptions = Args.hasArg(OPT_fsjlj_exceptions); 2143 Opts.ExternCNoUnwind = Args.hasArg(OPT_fexternc_nounwind); 2144 Opts.TraditionalCPP = Args.hasArg(OPT_traditional_cpp); 2145 2146 Opts.RTTI = Opts.CPlusPlus && !Args.hasArg(OPT_fno_rtti); 2147 Opts.RTTIData = Opts.RTTI && !Args.hasArg(OPT_fno_rtti_data); 2148 Opts.Blocks = Args.hasArg(OPT_fblocks) || (Opts.OpenCL 2149 && Opts.OpenCLVersion >= 200); 2150 Opts.BlocksRuntimeOptional = Args.hasArg(OPT_fblocks_runtime_optional); 2151 Opts.CoroutinesTS = Args.hasArg(OPT_fcoroutines_ts); 2152 2153 // Enable [[]] attributes in C++11 by default. 2154 Opts.DoubleSquareBracketAttributes = 2155 Args.hasFlag(OPT_fdouble_square_bracket_attributes, 2156 OPT_fno_double_square_bracket_attributes, Opts.CPlusPlus11); 2157 2158 Opts.ModulesTS = Args.hasArg(OPT_fmodules_ts); 2159 Opts.Modules = Args.hasArg(OPT_fmodules) || Opts.ModulesTS; 2160 Opts.ModulesStrictDeclUse = Args.hasArg(OPT_fmodules_strict_decluse); 2161 Opts.ModulesDeclUse = 2162 Args.hasArg(OPT_fmodules_decluse) || Opts.ModulesStrictDeclUse; 2163 Opts.ModulesLocalVisibility = 2164 Args.hasArg(OPT_fmodules_local_submodule_visibility) || Opts.ModulesTS; 2165 Opts.ModulesCodegen = Args.hasArg(OPT_fmodules_codegen); 2166 Opts.ModulesDebugInfo = Args.hasArg(OPT_fmodules_debuginfo); 2167 Opts.ModulesSearchAll = Opts.Modules && 2168 !Args.hasArg(OPT_fno_modules_search_all) && 2169 Args.hasArg(OPT_fmodules_search_all); 2170 Opts.ModulesErrorRecovery = !Args.hasArg(OPT_fno_modules_error_recovery); 2171 Opts.ImplicitModules = !Args.hasArg(OPT_fno_implicit_modules); 2172 Opts.CharIsSigned = Opts.OpenCL || !Args.hasArg(OPT_fno_signed_char); 2173 Opts.WChar = Opts.CPlusPlus && !Args.hasArg(OPT_fno_wchar); 2174 if (const Arg *A = Args.getLastArg(OPT_fwchar_type_EQ)) { 2175 Opts.WCharSize = llvm::StringSwitch<unsigned>(A->getValue()) 2176 .Case("char", 1) 2177 .Case("short", 2) 2178 .Case("int", 4) 2179 .Default(0); 2180 if (Opts.WCharSize == 0) 2181 Diags.Report(diag::err_fe_invalid_wchar_type) << A->getValue(); 2182 } 2183 Opts.WCharIsSigned = Args.hasFlag(OPT_fsigned_wchar, OPT_fno_signed_wchar, true); 2184 Opts.ShortEnums = Args.hasArg(OPT_fshort_enums); 2185 Opts.Freestanding = Args.hasArg(OPT_ffreestanding); 2186 Opts.NoBuiltin = Args.hasArg(OPT_fno_builtin) || Opts.Freestanding; 2187 if (!Opts.NoBuiltin) 2188 getAllNoBuiltinFuncValues(Args, Opts.NoBuiltinFuncs); 2189 Opts.NoMathBuiltin = Args.hasArg(OPT_fno_math_builtin); 2190 Opts.RelaxedTemplateTemplateArgs = 2191 Args.hasArg(OPT_frelaxed_template_template_args); 2192 Opts.SizedDeallocation = Args.hasArg(OPT_fsized_deallocation); 2193 Opts.AlignedAllocation = 2194 Args.hasFlag(OPT_faligned_allocation, OPT_fno_aligned_allocation, 2195 Opts.AlignedAllocation); 2196 Opts.AlignedAllocationUnavailable = 2197 Opts.AlignedAllocation && Args.hasArg(OPT_aligned_alloc_unavailable); 2198 Opts.NewAlignOverride = 2199 getLastArgIntValue(Args, OPT_fnew_alignment_EQ, 0, Diags); 2200 if (Opts.NewAlignOverride && !llvm::isPowerOf2_32(Opts.NewAlignOverride)) { 2201 Arg *A = Args.getLastArg(OPT_fnew_alignment_EQ); 2202 Diags.Report(diag::err_fe_invalid_alignment) << A->getAsString(Args) 2203 << A->getValue(); 2204 Opts.NewAlignOverride = 0; 2205 } 2206 Opts.ConceptsTS = Args.hasArg(OPT_fconcepts_ts); 2207 Opts.HeinousExtensions = Args.hasArg(OPT_fheinous_gnu_extensions); 2208 Opts.AccessControl = !Args.hasArg(OPT_fno_access_control); 2209 Opts.ElideConstructors = !Args.hasArg(OPT_fno_elide_constructors); 2210 Opts.MathErrno = !Opts.OpenCL && Args.hasArg(OPT_fmath_errno); 2211 Opts.InstantiationDepth = 2212 getLastArgIntValue(Args, OPT_ftemplate_depth, 1024, Diags); 2213 Opts.ArrowDepth = 2214 getLastArgIntValue(Args, OPT_foperator_arrow_depth, 256, Diags); 2215 Opts.ConstexprCallDepth = 2216 getLastArgIntValue(Args, OPT_fconstexpr_depth, 512, Diags); 2217 Opts.ConstexprStepLimit = 2218 getLastArgIntValue(Args, OPT_fconstexpr_steps, 1048576, Diags); 2219 Opts.BracketDepth = getLastArgIntValue(Args, OPT_fbracket_depth, 256, Diags); 2220 Opts.DelayedTemplateParsing = Args.hasArg(OPT_fdelayed_template_parsing); 2221 Opts.NumLargeByValueCopy = 2222 getLastArgIntValue(Args, OPT_Wlarge_by_value_copy_EQ, 0, Diags); 2223 Opts.MSBitfields = Args.hasArg(OPT_mms_bitfields); 2224 Opts.ObjCConstantStringClass = 2225 Args.getLastArgValue(OPT_fconstant_string_class); 2226 Opts.ObjCDefaultSynthProperties = 2227 !Args.hasArg(OPT_disable_objc_default_synthesize_properties); 2228 Opts.EncodeExtendedBlockSig = 2229 Args.hasArg(OPT_fencode_extended_block_signature); 2230 Opts.EmitAllDecls = Args.hasArg(OPT_femit_all_decls); 2231 Opts.PackStruct = getLastArgIntValue(Args, OPT_fpack_struct_EQ, 0, Diags); 2232 Opts.MaxTypeAlign = getLastArgIntValue(Args, OPT_fmax_type_align_EQ, 0, Diags); 2233 Opts.AlignDouble = Args.hasArg(OPT_malign_double); 2234 Opts.PICLevel = getLastArgIntValue(Args, OPT_pic_level, 0, Diags); 2235 Opts.PIE = Args.hasArg(OPT_pic_is_pie); 2236 Opts.Static = Args.hasArg(OPT_static_define); 2237 Opts.DumpRecordLayoutsSimple = Args.hasArg(OPT_fdump_record_layouts_simple); 2238 Opts.DumpRecordLayouts = Opts.DumpRecordLayoutsSimple 2239 || Args.hasArg(OPT_fdump_record_layouts); 2240 Opts.DumpVTableLayouts = Args.hasArg(OPT_fdump_vtable_layouts); 2241 Opts.SpellChecking = !Args.hasArg(OPT_fno_spell_checking); 2242 Opts.NoBitFieldTypeAlign = Args.hasArg(OPT_fno_bitfield_type_align); 2243 Opts.SinglePrecisionConstants = Args.hasArg(OPT_cl_single_precision_constant); 2244 Opts.FastRelaxedMath = Args.hasArg(OPT_cl_fast_relaxed_math); 2245 Opts.HexagonQdsp6Compat = Args.hasArg(OPT_mqdsp6_compat); 2246 Opts.FakeAddressSpaceMap = Args.hasArg(OPT_ffake_address_space_map); 2247 Opts.ParseUnknownAnytype = Args.hasArg(OPT_funknown_anytype); 2248 Opts.DebuggerSupport = Args.hasArg(OPT_fdebugger_support); 2249 Opts.DebuggerCastResultToId = Args.hasArg(OPT_fdebugger_cast_result_to_id); 2250 Opts.DebuggerObjCLiteral = Args.hasArg(OPT_fdebugger_objc_literal); 2251 Opts.ApplePragmaPack = Args.hasArg(OPT_fapple_pragma_pack); 2252 Opts.CurrentModule = Args.getLastArgValue(OPT_fmodule_name_EQ); 2253 Opts.AppExt = Args.hasArg(OPT_fapplication_extension); 2254 Opts.ModuleFeatures = Args.getAllArgValues(OPT_fmodule_feature); 2255 std::sort(Opts.ModuleFeatures.begin(), Opts.ModuleFeatures.end()); 2256 Opts.NativeHalfType |= Args.hasArg(OPT_fnative_half_type); 2257 Opts.NativeHalfArgsAndReturns |= Args.hasArg(OPT_fnative_half_arguments_and_returns); 2258 // Enable HalfArgsAndReturns if present in Args or if NativeHalfArgsAndReturns 2259 // is enabled. 2260 Opts.HalfArgsAndReturns = Args.hasArg(OPT_fallow_half_arguments_and_returns) 2261 | Opts.NativeHalfArgsAndReturns; 2262 Opts.GNUAsm = !Args.hasArg(OPT_fno_gnu_inline_asm); 2263 2264 // __declspec is enabled by default for the PS4 by the driver, and also 2265 // enabled for Microsoft Extensions or Borland Extensions, here. 2266 // 2267 // FIXME: __declspec is also currently enabled for CUDA, but isn't really a 2268 // CUDA extension. However, it is required for supporting 2269 // __clang_cuda_builtin_vars.h, which uses __declspec(property). Once that has 2270 // been rewritten in terms of something more generic, remove the Opts.CUDA 2271 // term here. 2272 Opts.DeclSpecKeyword = 2273 Args.hasFlag(OPT_fdeclspec, OPT_fno_declspec, 2274 (Opts.MicrosoftExt || Opts.Borland || Opts.CUDA)); 2275 2276 if (Arg *A = Args.getLastArg(OPT_faddress_space_map_mangling_EQ)) { 2277 switch (llvm::StringSwitch<unsigned>(A->getValue()) 2278 .Case("target", LangOptions::ASMM_Target) 2279 .Case("no", LangOptions::ASMM_Off) 2280 .Case("yes", LangOptions::ASMM_On) 2281 .Default(255)) { 2282 default: 2283 Diags.Report(diag::err_drv_invalid_value) 2284 << "-faddress-space-map-mangling=" << A->getValue(); 2285 break; 2286 case LangOptions::ASMM_Target: 2287 Opts.setAddressSpaceMapMangling(LangOptions::ASMM_Target); 2288 break; 2289 case LangOptions::ASMM_On: 2290 Opts.setAddressSpaceMapMangling(LangOptions::ASMM_On); 2291 break; 2292 case LangOptions::ASMM_Off: 2293 Opts.setAddressSpaceMapMangling(LangOptions::ASMM_Off); 2294 break; 2295 } 2296 } 2297 2298 if (Arg *A = Args.getLastArg(OPT_fms_memptr_rep_EQ)) { 2299 LangOptions::PragmaMSPointersToMembersKind InheritanceModel = 2300 llvm::StringSwitch<LangOptions::PragmaMSPointersToMembersKind>( 2301 A->getValue()) 2302 .Case("single", 2303 LangOptions::PPTMK_FullGeneralitySingleInheritance) 2304 .Case("multiple", 2305 LangOptions::PPTMK_FullGeneralityMultipleInheritance) 2306 .Case("virtual", 2307 LangOptions::PPTMK_FullGeneralityVirtualInheritance) 2308 .Default(LangOptions::PPTMK_BestCase); 2309 if (InheritanceModel == LangOptions::PPTMK_BestCase) 2310 Diags.Report(diag::err_drv_invalid_value) 2311 << "-fms-memptr-rep=" << A->getValue(); 2312 2313 Opts.setMSPointerToMemberRepresentationMethod(InheritanceModel); 2314 } 2315 2316 // Check for MS default calling conventions being specified. 2317 if (Arg *A = Args.getLastArg(OPT_fdefault_calling_conv_EQ)) { 2318 LangOptions::DefaultCallingConvention DefaultCC = 2319 llvm::StringSwitch<LangOptions::DefaultCallingConvention>(A->getValue()) 2320 .Case("cdecl", LangOptions::DCC_CDecl) 2321 .Case("fastcall", LangOptions::DCC_FastCall) 2322 .Case("stdcall", LangOptions::DCC_StdCall) 2323 .Case("vectorcall", LangOptions::DCC_VectorCall) 2324 .Case("regcall", LangOptions::DCC_RegCall) 2325 .Default(LangOptions::DCC_None); 2326 if (DefaultCC == LangOptions::DCC_None) 2327 Diags.Report(diag::err_drv_invalid_value) 2328 << "-fdefault-calling-conv=" << A->getValue(); 2329 2330 llvm::Triple T(TargetOpts.Triple); 2331 llvm::Triple::ArchType Arch = T.getArch(); 2332 bool emitError = (DefaultCC == LangOptions::DCC_FastCall || 2333 DefaultCC == LangOptions::DCC_StdCall) && 2334 Arch != llvm::Triple::x86; 2335 emitError |= (DefaultCC == LangOptions::DCC_VectorCall || 2336 DefaultCC == LangOptions::DCC_RegCall) && 2337 !(Arch == llvm::Triple::x86 || Arch == llvm::Triple::x86_64); 2338 if (emitError) 2339 Diags.Report(diag::err_drv_argument_not_allowed_with) 2340 << A->getSpelling() << T.getTriple(); 2341 else 2342 Opts.setDefaultCallingConv(DefaultCC); 2343 } 2344 2345 // -mrtd option 2346 if (Arg *A = Args.getLastArg(OPT_mrtd)) { 2347 if (Opts.getDefaultCallingConv() != LangOptions::DCC_None) 2348 Diags.Report(diag::err_drv_argument_not_allowed_with) 2349 << A->getSpelling() << "-fdefault-calling-conv"; 2350 else { 2351 llvm::Triple T(TargetOpts.Triple); 2352 if (T.getArch() != llvm::Triple::x86) 2353 Diags.Report(diag::err_drv_argument_not_allowed_with) 2354 << A->getSpelling() << T.getTriple(); 2355 else 2356 Opts.setDefaultCallingConv(LangOptions::DCC_StdCall); 2357 } 2358 } 2359 2360 // Check if -fopenmp is specified. 2361 Opts.OpenMP = Args.hasArg(options::OPT_fopenmp) ? 1 : 0; 2362 Opts.OpenMPUseTLS = 2363 Opts.OpenMP && !Args.hasArg(options::OPT_fnoopenmp_use_tls); 2364 Opts.OpenMPIsDevice = 2365 Opts.OpenMP && Args.hasArg(options::OPT_fopenmp_is_device); 2366 2367 if (Opts.OpenMP) { 2368 int Version = 2369 getLastArgIntValue(Args, OPT_fopenmp_version_EQ, Opts.OpenMP, Diags); 2370 if (Version != 0) 2371 Opts.OpenMP = Version; 2372 // Provide diagnostic when a given target is not expected to be an OpenMP 2373 // device or host. 2374 if (!Opts.OpenMPIsDevice) { 2375 switch (T.getArch()) { 2376 default: 2377 break; 2378 // Add unsupported host targets here: 2379 case llvm::Triple::nvptx: 2380 case llvm::Triple::nvptx64: 2381 Diags.Report(clang::diag::err_drv_omp_host_target_not_supported) 2382 << TargetOpts.Triple; 2383 break; 2384 } 2385 } 2386 } 2387 2388 // Set the flag to prevent the implementation from emitting device exception 2389 // handling code for those requiring so. 2390 if (Opts.OpenMPIsDevice && T.isNVPTX()) { 2391 Opts.Exceptions = 0; 2392 Opts.CXXExceptions = 0; 2393 } 2394 2395 // Get the OpenMP target triples if any. 2396 if (Arg *A = Args.getLastArg(options::OPT_fopenmp_targets_EQ)) { 2397 2398 for (unsigned i = 0; i < A->getNumValues(); ++i) { 2399 llvm::Triple TT(A->getValue(i)); 2400 2401 if (TT.getArch() == llvm::Triple::UnknownArch || 2402 !(TT.getArch() == llvm::Triple::ppc || 2403 TT.getArch() == llvm::Triple::ppc64 || 2404 TT.getArch() == llvm::Triple::ppc64le || 2405 TT.getArch() == llvm::Triple::nvptx || 2406 TT.getArch() == llvm::Triple::nvptx64 || 2407 TT.getArch() == llvm::Triple::x86 || 2408 TT.getArch() == llvm::Triple::x86_64)) 2409 Diags.Report(clang::diag::err_drv_invalid_omp_target) << A->getValue(i); 2410 else 2411 Opts.OMPTargetTriples.push_back(TT); 2412 } 2413 } 2414 2415 // Get OpenMP host file path if any and report if a non existent file is 2416 // found 2417 if (Arg *A = Args.getLastArg(options::OPT_fopenmp_host_ir_file_path)) { 2418 Opts.OMPHostIRFile = A->getValue(); 2419 if (!llvm::sys::fs::exists(Opts.OMPHostIRFile)) 2420 Diags.Report(clang::diag::err_drv_omp_host_ir_file_not_found) 2421 << Opts.OMPHostIRFile; 2422 } 2423 2424 // Record whether the __DEPRECATED define was requested. 2425 Opts.Deprecated = Args.hasFlag(OPT_fdeprecated_macro, 2426 OPT_fno_deprecated_macro, 2427 Opts.Deprecated); 2428 2429 // FIXME: Eliminate this dependency. 2430 unsigned Opt = getOptimizationLevel(Args, IK, Diags), 2431 OptSize = getOptimizationLevelSize(Args); 2432 Opts.Optimize = Opt != 0; 2433 Opts.OptimizeSize = OptSize != 0; 2434 2435 // This is the __NO_INLINE__ define, which just depends on things like the 2436 // optimization level and -fno-inline, not actually whether the backend has 2437 // inlining enabled. 2438 Opts.NoInlineDefine = !Opts.Optimize; 2439 if (Arg *InlineArg = Args.getLastArg( 2440 options::OPT_finline_functions, options::OPT_finline_hint_functions, 2441 options::OPT_fno_inline_functions, options::OPT_fno_inline)) 2442 if (InlineArg->getOption().matches(options::OPT_fno_inline)) 2443 Opts.NoInlineDefine = true; 2444 2445 Opts.FastMath = Args.hasArg(OPT_ffast_math) || 2446 Args.hasArg(OPT_cl_fast_relaxed_math); 2447 Opts.FiniteMathOnly = Args.hasArg(OPT_ffinite_math_only) || 2448 Args.hasArg(OPT_cl_finite_math_only) || 2449 Args.hasArg(OPT_cl_fast_relaxed_math); 2450 Opts.UnsafeFPMath = Args.hasArg(OPT_menable_unsafe_fp_math) || 2451 Args.hasArg(OPT_cl_unsafe_math_optimizations) || 2452 Args.hasArg(OPT_cl_fast_relaxed_math); 2453 2454 if (Arg *A = Args.getLastArg(OPT_ffp_contract)) { 2455 StringRef Val = A->getValue(); 2456 if (Val == "fast") 2457 Opts.setDefaultFPContractMode(LangOptions::FPC_Fast); 2458 else if (Val == "on") 2459 Opts.setDefaultFPContractMode(LangOptions::FPC_On); 2460 else if (Val == "off") 2461 Opts.setDefaultFPContractMode(LangOptions::FPC_Off); 2462 else 2463 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Val; 2464 } 2465 2466 Opts.RetainCommentsFromSystemHeaders = 2467 Args.hasArg(OPT_fretain_comments_from_system_headers); 2468 2469 unsigned SSP = getLastArgIntValue(Args, OPT_stack_protector, 0, Diags); 2470 switch (SSP) { 2471 default: 2472 Diags.Report(diag::err_drv_invalid_value) 2473 << Args.getLastArg(OPT_stack_protector)->getAsString(Args) << SSP; 2474 break; 2475 case 0: Opts.setStackProtector(LangOptions::SSPOff); break; 2476 case 1: Opts.setStackProtector(LangOptions::SSPOn); break; 2477 case 2: Opts.setStackProtector(LangOptions::SSPStrong); break; 2478 case 3: Opts.setStackProtector(LangOptions::SSPReq); break; 2479 } 2480 2481 // Parse -fsanitize= arguments. 2482 parseSanitizerKinds("-fsanitize=", Args.getAllArgValues(OPT_fsanitize_EQ), 2483 Diags, Opts.Sanitize); 2484 // -fsanitize-address-field-padding=N has to be a LangOpt, parse it here. 2485 Opts.SanitizeAddressFieldPadding = 2486 getLastArgIntValue(Args, OPT_fsanitize_address_field_padding, 0, Diags); 2487 Opts.SanitizerBlacklistFiles = Args.getAllArgValues(OPT_fsanitize_blacklist); 2488 2489 // -fxray-instrument 2490 Opts.XRayInstrument = 2491 Args.hasFlag(OPT_fxray_instrument, OPT_fnoxray_instrument, false); 2492 2493 // -fxray-{always,never}-instrument= filenames. 2494 Opts.XRayAlwaysInstrumentFiles = 2495 Args.getAllArgValues(OPT_fxray_always_instrument); 2496 Opts.XRayNeverInstrumentFiles = 2497 Args.getAllArgValues(OPT_fxray_never_instrument); 2498 2499 // -fallow-editor-placeholders 2500 Opts.AllowEditorPlaceholders = Args.hasArg(OPT_fallow_editor_placeholders); 2501 } 2502 2503 static bool isStrictlyPreprocessorAction(frontend::ActionKind Action) { 2504 switch (Action) { 2505 case frontend::ASTDeclList: 2506 case frontend::ASTDump: 2507 case frontend::ASTPrint: 2508 case frontend::ASTView: 2509 case frontend::EmitAssembly: 2510 case frontend::EmitBC: 2511 case frontend::EmitHTML: 2512 case frontend::EmitLLVM: 2513 case frontend::EmitLLVMOnly: 2514 case frontend::EmitCodeGenOnly: 2515 case frontend::EmitObj: 2516 case frontend::FixIt: 2517 case frontend::GenerateModule: 2518 case frontend::GenerateModuleInterface: 2519 case frontend::GeneratePCH: 2520 case frontend::GeneratePTH: 2521 case frontend::ParseSyntaxOnly: 2522 case frontend::ModuleFileInfo: 2523 case frontend::VerifyPCH: 2524 case frontend::PluginAction: 2525 case frontend::PrintDeclContext: 2526 case frontend::RewriteObjC: 2527 case frontend::RewriteTest: 2528 case frontend::RunAnalysis: 2529 case frontend::MigrateSource: 2530 return false; 2531 2532 case frontend::DumpRawTokens: 2533 case frontend::DumpTokens: 2534 case frontend::InitOnly: 2535 case frontend::PrintPreamble: 2536 case frontend::PrintPreprocessedInput: 2537 case frontend::RewriteMacros: 2538 case frontend::RunPreprocessorOnly: 2539 return true; 2540 } 2541 llvm_unreachable("invalid frontend action"); 2542 } 2543 2544 static void ParsePreprocessorArgs(PreprocessorOptions &Opts, ArgList &Args, 2545 FileManager &FileMgr, 2546 DiagnosticsEngine &Diags, 2547 frontend::ActionKind Action) { 2548 using namespace options; 2549 Opts.ImplicitPCHInclude = Args.getLastArgValue(OPT_include_pch); 2550 Opts.ImplicitPTHInclude = Args.getLastArgValue(OPT_include_pth); 2551 if (const Arg *A = Args.getLastArg(OPT_token_cache)) 2552 Opts.TokenCache = A->getValue(); 2553 else 2554 Opts.TokenCache = Opts.ImplicitPTHInclude; 2555 Opts.UsePredefines = !Args.hasArg(OPT_undef); 2556 Opts.DetailedRecord = Args.hasArg(OPT_detailed_preprocessing_record); 2557 Opts.DisablePCHValidation = Args.hasArg(OPT_fno_validate_pch); 2558 Opts.AllowPCHWithCompilerErrors = Args.hasArg(OPT_fallow_pch_with_errors); 2559 2560 Opts.DumpDeserializedPCHDecls = Args.hasArg(OPT_dump_deserialized_pch_decls); 2561 for (const Arg *A : Args.filtered(OPT_error_on_deserialized_pch_decl)) 2562 Opts.DeserializedPCHDeclsToErrorOn.insert(A->getValue()); 2563 2564 if (const Arg *A = Args.getLastArg(OPT_preamble_bytes_EQ)) { 2565 StringRef Value(A->getValue()); 2566 size_t Comma = Value.find(','); 2567 unsigned Bytes = 0; 2568 unsigned EndOfLine = 0; 2569 2570 if (Comma == StringRef::npos || 2571 Value.substr(0, Comma).getAsInteger(10, Bytes) || 2572 Value.substr(Comma + 1).getAsInteger(10, EndOfLine)) 2573 Diags.Report(diag::err_drv_preamble_format); 2574 else { 2575 Opts.PrecompiledPreambleBytes.first = Bytes; 2576 Opts.PrecompiledPreambleBytes.second = (EndOfLine != 0); 2577 } 2578 } 2579 2580 // Add macros from the command line. 2581 for (const Arg *A : Args.filtered(OPT_D, OPT_U)) { 2582 if (A->getOption().matches(OPT_D)) 2583 Opts.addMacroDef(A->getValue()); 2584 else 2585 Opts.addMacroUndef(A->getValue()); 2586 } 2587 2588 Opts.MacroIncludes = Args.getAllArgValues(OPT_imacros); 2589 2590 // Add the ordered list of -includes. 2591 for (const Arg *A : Args.filtered(OPT_include)) 2592 Opts.Includes.emplace_back(A->getValue()); 2593 2594 for (const Arg *A : Args.filtered(OPT_chain_include)) 2595 Opts.ChainedIncludes.emplace_back(A->getValue()); 2596 2597 for (const Arg *A : Args.filtered(OPT_remap_file)) { 2598 std::pair<StringRef, StringRef> Split = StringRef(A->getValue()).split(';'); 2599 2600 if (Split.second.empty()) { 2601 Diags.Report(diag::err_drv_invalid_remap_file) << A->getAsString(Args); 2602 continue; 2603 } 2604 2605 Opts.addRemappedFile(Split.first, Split.second); 2606 } 2607 2608 if (Arg *A = Args.getLastArg(OPT_fobjc_arc_cxxlib_EQ)) { 2609 StringRef Name = A->getValue(); 2610 unsigned Library = llvm::StringSwitch<unsigned>(Name) 2611 .Case("libc++", ARCXX_libcxx) 2612 .Case("libstdc++", ARCXX_libstdcxx) 2613 .Case("none", ARCXX_nolib) 2614 .Default(~0U); 2615 if (Library == ~0U) 2616 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Name; 2617 else 2618 Opts.ObjCXXARCStandardLibrary = (ObjCXXARCStandardLibraryKind)Library; 2619 } 2620 2621 // Always avoid lexing editor placeholders when we're just running the 2622 // preprocessor as we never want to emit the 2623 // "editor placeholder in source file" error in PP only mode. 2624 if (isStrictlyPreprocessorAction(Action)) 2625 Opts.LexEditorPlaceholders = false; 2626 } 2627 2628 static void ParsePreprocessorOutputArgs(PreprocessorOutputOptions &Opts, 2629 ArgList &Args, 2630 frontend::ActionKind Action) { 2631 using namespace options; 2632 2633 if (isStrictlyPreprocessorAction(Action)) 2634 Opts.ShowCPP = !Args.hasArg(OPT_dM); 2635 else 2636 Opts.ShowCPP = 0; 2637 2638 Opts.ShowComments = Args.hasArg(OPT_C); 2639 Opts.ShowLineMarkers = !Args.hasArg(OPT_P); 2640 Opts.ShowMacroComments = Args.hasArg(OPT_CC); 2641 Opts.ShowMacros = Args.hasArg(OPT_dM) || Args.hasArg(OPT_dD); 2642 Opts.ShowIncludeDirectives = Args.hasArg(OPT_dI); 2643 Opts.RewriteIncludes = Args.hasArg(OPT_frewrite_includes); 2644 Opts.RewriteImports = Args.hasArg(OPT_frewrite_imports); 2645 Opts.UseLineDirectives = Args.hasArg(OPT_fuse_line_directives); 2646 } 2647 2648 static void ParseTargetArgs(TargetOptions &Opts, ArgList &Args, 2649 DiagnosticsEngine &Diags) { 2650 using namespace options; 2651 Opts.ABI = Args.getLastArgValue(OPT_target_abi); 2652 if (Arg *A = Args.getLastArg(OPT_meabi)) { 2653 StringRef Value = A->getValue(); 2654 llvm::EABI EABIVersion = llvm::StringSwitch<llvm::EABI>(Value) 2655 .Case("default", llvm::EABI::Default) 2656 .Case("4", llvm::EABI::EABI4) 2657 .Case("5", llvm::EABI::EABI5) 2658 .Case("gnu", llvm::EABI::GNU) 2659 .Default(llvm::EABI::Unknown); 2660 if (EABIVersion == llvm::EABI::Unknown) 2661 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) 2662 << Value; 2663 else 2664 Opts.EABIVersion = EABIVersion; 2665 } 2666 Opts.CPU = Args.getLastArgValue(OPT_target_cpu); 2667 Opts.FPMath = Args.getLastArgValue(OPT_mfpmath); 2668 Opts.FeaturesAsWritten = Args.getAllArgValues(OPT_target_feature); 2669 Opts.LinkerVersion = Args.getLastArgValue(OPT_target_linker_version); 2670 Opts.Triple = llvm::Triple::normalize(Args.getLastArgValue(OPT_triple)); 2671 // Use the default target triple if unspecified. 2672 if (Opts.Triple.empty()) 2673 Opts.Triple = llvm::sys::getDefaultTargetTriple(); 2674 Opts.OpenCLExtensionsAsWritten = Args.getAllArgValues(OPT_cl_ext_EQ); 2675 } 2676 2677 bool CompilerInvocation::CreateFromArgs(CompilerInvocation &Res, 2678 const char *const *ArgBegin, 2679 const char *const *ArgEnd, 2680 DiagnosticsEngine &Diags) { 2681 bool Success = true; 2682 2683 // Parse the arguments. 2684 std::unique_ptr<OptTable> Opts = createDriverOptTable(); 2685 const unsigned IncludedFlagsBitmask = options::CC1Option; 2686 unsigned MissingArgIndex, MissingArgCount; 2687 InputArgList Args = 2688 Opts->ParseArgs(llvm::makeArrayRef(ArgBegin, ArgEnd), MissingArgIndex, 2689 MissingArgCount, IncludedFlagsBitmask); 2690 LangOptions &LangOpts = *Res.getLangOpts(); 2691 2692 // Check for missing argument error. 2693 if (MissingArgCount) { 2694 Diags.Report(diag::err_drv_missing_argument) 2695 << Args.getArgString(MissingArgIndex) << MissingArgCount; 2696 Success = false; 2697 } 2698 2699 // Issue errors on unknown arguments. 2700 for (const Arg *A : Args.filtered(OPT_UNKNOWN)) { 2701 Diags.Report(diag::err_drv_unknown_argument) << A->getAsString(Args); 2702 Success = false; 2703 } 2704 2705 Success &= ParseAnalyzerArgs(*Res.getAnalyzerOpts(), Args, Diags); 2706 Success &= ParseMigratorArgs(Res.getMigratorOpts(), Args); 2707 ParseDependencyOutputArgs(Res.getDependencyOutputOpts(), Args); 2708 Success &= 2709 ParseDiagnosticArgs(Res.getDiagnosticOpts(), Args, &Diags, 2710 false /*DefaultDiagColor*/, false /*DefaultShowOpt*/); 2711 ParseCommentArgs(LangOpts.CommentOpts, Args); 2712 ParseFileSystemArgs(Res.getFileSystemOpts(), Args); 2713 // FIXME: We shouldn't have to pass the DashX option around here 2714 InputKind DashX = ParseFrontendArgs(Res.getFrontendOpts(), Args, Diags, 2715 LangOpts.IsHeaderFile); 2716 ParseTargetArgs(Res.getTargetOpts(), Args, Diags); 2717 Success &= ParseCodeGenArgs(Res.getCodeGenOpts(), Args, DashX, Diags, 2718 Res.getTargetOpts()); 2719 ParseHeaderSearchArgs(Res.getHeaderSearchOpts(), Args, 2720 Res.getFileSystemOpts().WorkingDir); 2721 if (DashX.getFormat() == InputKind::Precompiled || 2722 DashX.getLanguage() == InputKind::LLVM_IR) { 2723 // ObjCAAutoRefCount and Sanitize LangOpts are used to setup the 2724 // PassManager in BackendUtil.cpp. They need to be initializd no matter 2725 // what the input type is. 2726 if (Args.hasArg(OPT_fobjc_arc)) 2727 LangOpts.ObjCAutoRefCount = 1; 2728 // PIClevel and PIELevel are needed during code generation and this should be 2729 // set regardless of the input type. 2730 LangOpts.PICLevel = getLastArgIntValue(Args, OPT_pic_level, 0, Diags); 2731 LangOpts.PIE = Args.hasArg(OPT_pic_is_pie); 2732 parseSanitizerKinds("-fsanitize=", Args.getAllArgValues(OPT_fsanitize_EQ), 2733 Diags, LangOpts.Sanitize); 2734 } else { 2735 // Other LangOpts are only initialzed when the input is not AST or LLVM IR. 2736 // FIXME: Should we really be calling this for an InputKind::Asm input? 2737 ParseLangArgs(LangOpts, Args, DashX, Res.getTargetOpts(), 2738 Res.getPreprocessorOpts(), Diags); 2739 if (Res.getFrontendOpts().ProgramAction == frontend::RewriteObjC) 2740 LangOpts.ObjCExceptions = 1; 2741 } 2742 2743 if (LangOpts.CUDA) { 2744 // During CUDA device-side compilation, the aux triple is the 2745 // triple used for host compilation. 2746 if (LangOpts.CUDAIsDevice) 2747 Res.getTargetOpts().HostTriple = Res.getFrontendOpts().AuxTriple; 2748 } 2749 2750 // Set the triple of the host for OpenMP device compile. 2751 if (LangOpts.OpenMPIsDevice) 2752 Res.getTargetOpts().HostTriple = Res.getFrontendOpts().AuxTriple; 2753 2754 // FIXME: Override value name discarding when asan or msan is used because the 2755 // backend passes depend on the name of the alloca in order to print out 2756 // names. 2757 Res.getCodeGenOpts().DiscardValueNames &= 2758 !LangOpts.Sanitize.has(SanitizerKind::Address) && 2759 !LangOpts.Sanitize.has(SanitizerKind::Memory); 2760 2761 // FIXME: ParsePreprocessorArgs uses the FileManager to read the contents of 2762 // PCH file and find the original header name. Remove the need to do that in 2763 // ParsePreprocessorArgs and remove the FileManager 2764 // parameters from the function and the "FileManager.h" #include. 2765 FileManager FileMgr(Res.getFileSystemOpts()); 2766 ParsePreprocessorArgs(Res.getPreprocessorOpts(), Args, FileMgr, Diags, 2767 Res.getFrontendOpts().ProgramAction); 2768 ParsePreprocessorOutputArgs(Res.getPreprocessorOutputOpts(), Args, 2769 Res.getFrontendOpts().ProgramAction); 2770 2771 // Turn on -Wspir-compat for SPIR target. 2772 llvm::Triple T(Res.getTargetOpts().Triple); 2773 auto Arch = T.getArch(); 2774 if (Arch == llvm::Triple::spir || Arch == llvm::Triple::spir64) { 2775 Res.getDiagnosticOpts().Warnings.push_back("spir-compat"); 2776 } 2777 2778 // If sanitizer is enabled, disable OPT_ffine_grained_bitfield_accesses. 2779 if (Res.getCodeGenOpts().FineGrainedBitfieldAccesses && 2780 !Res.getLangOpts()->Sanitize.empty()) { 2781 Res.getCodeGenOpts().FineGrainedBitfieldAccesses = false; 2782 Diags.Report(diag::warn_drv_fine_grained_bitfield_accesses_ignored); 2783 } 2784 return Success; 2785 } 2786 2787 std::string CompilerInvocation::getModuleHash() const { 2788 // Note: For QoI reasons, the things we use as a hash here should all be 2789 // dumped via the -module-info flag. 2790 using llvm::hash_code; 2791 using llvm::hash_value; 2792 using llvm::hash_combine; 2793 2794 // Start the signature with the compiler version. 2795 // FIXME: We'd rather use something more cryptographically sound than 2796 // CityHash, but this will do for now. 2797 hash_code code = hash_value(getClangFullRepositoryVersion()); 2798 2799 // Extend the signature with the language options 2800 #define LANGOPT(Name, Bits, Default, Description) \ 2801 code = hash_combine(code, LangOpts->Name); 2802 #define ENUM_LANGOPT(Name, Type, Bits, Default, Description) \ 2803 code = hash_combine(code, static_cast<unsigned>(LangOpts->get##Name())); 2804 #define BENIGN_LANGOPT(Name, Bits, Default, Description) 2805 #define BENIGN_ENUM_LANGOPT(Name, Type, Bits, Default, Description) 2806 #include "clang/Basic/LangOptions.def" 2807 2808 for (StringRef Feature : LangOpts->ModuleFeatures) 2809 code = hash_combine(code, Feature); 2810 2811 // Extend the signature with the target options. 2812 code = hash_combine(code, TargetOpts->Triple, TargetOpts->CPU, 2813 TargetOpts->ABI); 2814 for (unsigned i = 0, n = TargetOpts->FeaturesAsWritten.size(); i != n; ++i) 2815 code = hash_combine(code, TargetOpts->FeaturesAsWritten[i]); 2816 2817 // Extend the signature with preprocessor options. 2818 const PreprocessorOptions &ppOpts = getPreprocessorOpts(); 2819 const HeaderSearchOptions &hsOpts = getHeaderSearchOpts(); 2820 code = hash_combine(code, ppOpts.UsePredefines, ppOpts.DetailedRecord); 2821 2822 for (std::vector<std::pair<std::string, bool/*isUndef*/>>::const_iterator 2823 I = getPreprocessorOpts().Macros.begin(), 2824 IEnd = getPreprocessorOpts().Macros.end(); 2825 I != IEnd; ++I) { 2826 // If we're supposed to ignore this macro for the purposes of modules, 2827 // don't put it into the hash. 2828 if (!hsOpts.ModulesIgnoreMacros.empty()) { 2829 // Check whether we're ignoring this macro. 2830 StringRef MacroDef = I->first; 2831 if (hsOpts.ModulesIgnoreMacros.count( 2832 llvm::CachedHashString(MacroDef.split('=').first))) 2833 continue; 2834 } 2835 2836 code = hash_combine(code, I->first, I->second); 2837 } 2838 2839 // Extend the signature with the sysroot and other header search options. 2840 code = hash_combine(code, hsOpts.Sysroot, 2841 hsOpts.ModuleFormat, 2842 hsOpts.UseDebugInfo, 2843 hsOpts.UseBuiltinIncludes, 2844 hsOpts.UseStandardSystemIncludes, 2845 hsOpts.UseStandardCXXIncludes, 2846 hsOpts.UseLibcxx, 2847 hsOpts.ModulesValidateDiagnosticOptions); 2848 code = hash_combine(code, hsOpts.ResourceDir); 2849 2850 // Extend the signature with the user build path. 2851 code = hash_combine(code, hsOpts.ModuleUserBuildPath); 2852 2853 // Extend the signature with the module file extensions. 2854 const FrontendOptions &frontendOpts = getFrontendOpts(); 2855 for (const auto &ext : frontendOpts.ModuleFileExtensions) { 2856 code = ext->hashExtension(code); 2857 } 2858 2859 // Extend the signature with the enabled sanitizers, if at least one is 2860 // enabled. Sanitizers which cannot affect AST generation aren't hashed. 2861 SanitizerSet SanHash = LangOpts->Sanitize; 2862 SanHash.clear(getPPTransparentSanitizers()); 2863 if (!SanHash.empty()) 2864 code = hash_combine(code, SanHash.Mask); 2865 2866 return llvm::APInt(64, code).toString(36, /*Signed=*/false); 2867 } 2868 2869 namespace clang { 2870 2871 template<typename IntTy> 2872 static IntTy getLastArgIntValueImpl(const ArgList &Args, OptSpecifier Id, 2873 IntTy Default, 2874 DiagnosticsEngine *Diags) { 2875 IntTy Res = Default; 2876 if (Arg *A = Args.getLastArg(Id)) { 2877 if (StringRef(A->getValue()).getAsInteger(10, Res)) { 2878 if (Diags) 2879 Diags->Report(diag::err_drv_invalid_int_value) << A->getAsString(Args) 2880 << A->getValue(); 2881 } 2882 } 2883 return Res; 2884 } 2885 2886 2887 // Declared in clang/Frontend/Utils.h. 2888 int getLastArgIntValue(const ArgList &Args, OptSpecifier Id, int Default, 2889 DiagnosticsEngine *Diags) { 2890 return getLastArgIntValueImpl<int>(Args, Id, Default, Diags); 2891 } 2892 2893 uint64_t getLastArgUInt64Value(const ArgList &Args, OptSpecifier Id, 2894 uint64_t Default, 2895 DiagnosticsEngine *Diags) { 2896 return getLastArgIntValueImpl<uint64_t>(Args, Id, Default, Diags); 2897 } 2898 2899 void BuryPointer(const void *Ptr) { 2900 // This function may be called only a small fixed amount of times per each 2901 // invocation, otherwise we do actually have a leak which we want to report. 2902 // If this function is called more than kGraveYardMaxSize times, the pointers 2903 // will not be properly buried and a leak detector will report a leak, which 2904 // is what we want in such case. 2905 static const size_t kGraveYardMaxSize = 16; 2906 LLVM_ATTRIBUTE_UNUSED static const void *GraveYard[kGraveYardMaxSize]; 2907 static std::atomic<unsigned> GraveYardSize; 2908 unsigned Idx = GraveYardSize++; 2909 if (Idx >= kGraveYardMaxSize) 2910 return; 2911 GraveYard[Idx] = Ptr; 2912 } 2913 2914 IntrusiveRefCntPtr<vfs::FileSystem> 2915 createVFSFromCompilerInvocation(const CompilerInvocation &CI, 2916 DiagnosticsEngine &Diags) { 2917 return createVFSFromCompilerInvocation(CI, Diags, vfs::getRealFileSystem()); 2918 } 2919 2920 IntrusiveRefCntPtr<vfs::FileSystem> 2921 createVFSFromCompilerInvocation(const CompilerInvocation &CI, 2922 DiagnosticsEngine &Diags, 2923 IntrusiveRefCntPtr<vfs::FileSystem> BaseFS) { 2924 if (CI.getHeaderSearchOpts().VFSOverlayFiles.empty()) 2925 return BaseFS; 2926 2927 IntrusiveRefCntPtr<vfs::OverlayFileSystem> Overlay( 2928 new vfs::OverlayFileSystem(BaseFS)); 2929 // earlier vfs files are on the bottom 2930 for (const std::string &File : CI.getHeaderSearchOpts().VFSOverlayFiles) { 2931 llvm::ErrorOr<std::unique_ptr<llvm::MemoryBuffer>> Buffer = 2932 BaseFS->getBufferForFile(File); 2933 if (!Buffer) { 2934 Diags.Report(diag::err_missing_vfs_overlay_file) << File; 2935 return IntrusiveRefCntPtr<vfs::FileSystem>(); 2936 } 2937 2938 IntrusiveRefCntPtr<vfs::FileSystem> FS = vfs::getVFSFromYAML( 2939 std::move(Buffer.get()), /*DiagHandler*/ nullptr, File); 2940 if (!FS.get()) { 2941 Diags.Report(diag::err_invalid_vfs_overlay) << File; 2942 return IntrusiveRefCntPtr<vfs::FileSystem>(); 2943 } 2944 Overlay->pushOverlay(FS); 2945 } 2946 return Overlay; 2947 } 2948 } // end namespace clang 2949