1 //===- CompilerInvocation.cpp ---------------------------------------------===// 2 // 3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 4 // See https://llvm.org/LICENSE.txt for license information. 5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 6 // 7 //===----------------------------------------------------------------------===// 8 9 #include "clang/Frontend/CompilerInvocation.h" 10 #include "TestModuleFileExtension.h" 11 #include "clang/Basic/Builtins.h" 12 #include "clang/Basic/CharInfo.h" 13 #include "clang/Basic/CodeGenOptions.h" 14 #include "clang/Basic/CommentOptions.h" 15 #include "clang/Basic/DebugInfoOptions.h" 16 #include "clang/Basic/Diagnostic.h" 17 #include "clang/Basic/DiagnosticOptions.h" 18 #include "clang/Basic/FileSystemOptions.h" 19 #include "clang/Basic/LLVM.h" 20 #include "clang/Basic/LangOptions.h" 21 #include "clang/Basic/ObjCRuntime.h" 22 #include "clang/Basic/Sanitizers.h" 23 #include "clang/Basic/SourceLocation.h" 24 #include "clang/Basic/TargetOptions.h" 25 #include "clang/Basic/Version.h" 26 #include "clang/Basic/Visibility.h" 27 #include "clang/Basic/XRayInstr.h" 28 #include "clang/Config/config.h" 29 #include "clang/Driver/Driver.h" 30 #include "clang/Driver/DriverDiagnostic.h" 31 #include "clang/Driver/Options.h" 32 #include "clang/Frontend/CommandLineSourceLoc.h" 33 #include "clang/Frontend/DependencyOutputOptions.h" 34 #include "clang/Frontend/FrontendDiagnostic.h" 35 #include "clang/Frontend/FrontendOptions.h" 36 #include "clang/Frontend/FrontendPluginRegistry.h" 37 #include "clang/Frontend/LangStandard.h" 38 #include "clang/Frontend/MigratorOptions.h" 39 #include "clang/Frontend/PreprocessorOutputOptions.h" 40 #include "clang/Frontend/Utils.h" 41 #include "clang/Lex/HeaderSearchOptions.h" 42 #include "clang/Lex/PreprocessorOptions.h" 43 #include "clang/Sema/CodeCompleteOptions.h" 44 #include "clang/Serialization/ModuleFileExtension.h" 45 #include "clang/StaticAnalyzer/Core/AnalyzerOptions.h" 46 #include "llvm/ADT/APInt.h" 47 #include "llvm/ADT/ArrayRef.h" 48 #include "llvm/ADT/CachedHashString.h" 49 #include "llvm/ADT/Hashing.h" 50 #include "llvm/ADT/None.h" 51 #include "llvm/ADT/Optional.h" 52 #include "llvm/ADT/SmallString.h" 53 #include "llvm/ADT/SmallVector.h" 54 #include "llvm/ADT/StringRef.h" 55 #include "llvm/ADT/StringSwitch.h" 56 #include "llvm/ADT/Triple.h" 57 #include "llvm/ADT/Twine.h" 58 #include "llvm/IR/DebugInfoMetadata.h" 59 #include "llvm/Linker/Linker.h" 60 #include "llvm/MC/MCTargetOptions.h" 61 #include "llvm/Option/Arg.h" 62 #include "llvm/Option/ArgList.h" 63 #include "llvm/Option/OptSpecifier.h" 64 #include "llvm/Option/OptTable.h" 65 #include "llvm/Option/Option.h" 66 #include "llvm/ProfileData/InstrProfReader.h" 67 #include "llvm/Support/CodeGen.h" 68 #include "llvm/Support/Compiler.h" 69 #include "llvm/Support/Error.h" 70 #include "llvm/Support/ErrorHandling.h" 71 #include "llvm/Support/ErrorOr.h" 72 #include "llvm/Support/FileSystem.h" 73 #include "llvm/Support/Host.h" 74 #include "llvm/Support/MathExtras.h" 75 #include "llvm/Support/MemoryBuffer.h" 76 #include "llvm/Support/Path.h" 77 #include "llvm/Support/Process.h" 78 #include "llvm/Support/Regex.h" 79 #include "llvm/Support/VersionTuple.h" 80 #include "llvm/Support/VirtualFileSystem.h" 81 #include "llvm/Support/raw_ostream.h" 82 #include "llvm/Target/TargetOptions.h" 83 #include <algorithm> 84 #include <atomic> 85 #include <cassert> 86 #include <cstddef> 87 #include <cstring> 88 #include <memory> 89 #include <string> 90 #include <tuple> 91 #include <utility> 92 #include <vector> 93 94 using namespace clang; 95 using namespace driver; 96 using namespace options; 97 using namespace llvm::opt; 98 99 //===----------------------------------------------------------------------===// 100 // Initialization. 101 //===----------------------------------------------------------------------===// 102 103 CompilerInvocationBase::CompilerInvocationBase() 104 : LangOpts(new LangOptions()), TargetOpts(new TargetOptions()), 105 DiagnosticOpts(new DiagnosticOptions()), 106 HeaderSearchOpts(new HeaderSearchOptions()), 107 PreprocessorOpts(new PreprocessorOptions()) {} 108 109 CompilerInvocationBase::CompilerInvocationBase(const CompilerInvocationBase &X) 110 : LangOpts(new LangOptions(*X.getLangOpts())), 111 TargetOpts(new TargetOptions(X.getTargetOpts())), 112 DiagnosticOpts(new DiagnosticOptions(X.getDiagnosticOpts())), 113 HeaderSearchOpts(new HeaderSearchOptions(X.getHeaderSearchOpts())), 114 PreprocessorOpts(new PreprocessorOptions(X.getPreprocessorOpts())) {} 115 116 CompilerInvocationBase::~CompilerInvocationBase() = default; 117 118 //===----------------------------------------------------------------------===// 119 // Deserialization (from args) 120 //===----------------------------------------------------------------------===// 121 122 static unsigned getOptimizationLevel(ArgList &Args, InputKind IK, 123 DiagnosticsEngine &Diags) { 124 unsigned DefaultOpt = llvm::CodeGenOpt::None; 125 if (IK.getLanguage() == InputKind::OpenCL && !Args.hasArg(OPT_cl_opt_disable)) 126 DefaultOpt = llvm::CodeGenOpt::Default; 127 128 if (Arg *A = Args.getLastArg(options::OPT_O_Group)) { 129 if (A->getOption().matches(options::OPT_O0)) 130 return llvm::CodeGenOpt::None; 131 132 if (A->getOption().matches(options::OPT_Ofast)) 133 return llvm::CodeGenOpt::Aggressive; 134 135 assert(A->getOption().matches(options::OPT_O)); 136 137 StringRef S(A->getValue()); 138 if (S == "s" || S == "z" || S.empty()) 139 return llvm::CodeGenOpt::Default; 140 141 if (S == "g") 142 return llvm::CodeGenOpt::Less; 143 144 return getLastArgIntValue(Args, OPT_O, DefaultOpt, Diags); 145 } 146 147 return DefaultOpt; 148 } 149 150 static unsigned getOptimizationLevelSize(ArgList &Args) { 151 if (Arg *A = Args.getLastArg(options::OPT_O_Group)) { 152 if (A->getOption().matches(options::OPT_O)) { 153 switch (A->getValue()[0]) { 154 default: 155 return 0; 156 case 's': 157 return 1; 158 case 'z': 159 return 2; 160 } 161 } 162 } 163 return 0; 164 } 165 166 static void addDiagnosticArgs(ArgList &Args, OptSpecifier Group, 167 OptSpecifier GroupWithValue, 168 std::vector<std::string> &Diagnostics) { 169 for (auto *A : Args.filtered(Group)) { 170 if (A->getOption().getKind() == Option::FlagClass) { 171 // The argument is a pure flag (such as OPT_Wall or OPT_Wdeprecated). Add 172 // its name (minus the "W" or "R" at the beginning) to the warning list. 173 Diagnostics.push_back(A->getOption().getName().drop_front(1)); 174 } else if (A->getOption().matches(GroupWithValue)) { 175 // This is -Wfoo= or -Rfoo=, where foo is the name of the diagnostic group. 176 Diagnostics.push_back(A->getOption().getName().drop_front(1).rtrim("=-")); 177 } else { 178 // Otherwise, add its value (for OPT_W_Joined and similar). 179 for (const auto *Arg : A->getValues()) 180 Diagnostics.emplace_back(Arg); 181 } 182 } 183 } 184 185 // Parse the Static Analyzer configuration. If \p Diags is set to nullptr, 186 // it won't verify the input. 187 static void parseAnalyzerConfigs(AnalyzerOptions &AnOpts, 188 DiagnosticsEngine *Diags); 189 190 static void getAllNoBuiltinFuncValues(ArgList &Args, 191 std::vector<std::string> &Funcs) { 192 SmallVector<const char *, 8> Values; 193 for (const auto &Arg : Args) { 194 const Option &O = Arg->getOption(); 195 if (O.matches(options::OPT_fno_builtin_)) { 196 const char *FuncName = Arg->getValue(); 197 if (Builtin::Context::isBuiltinFunc(FuncName)) 198 Values.push_back(FuncName); 199 } 200 } 201 Funcs.insert(Funcs.end(), Values.begin(), Values.end()); 202 } 203 204 static bool ParseAnalyzerArgs(AnalyzerOptions &Opts, ArgList &Args, 205 DiagnosticsEngine &Diags) { 206 bool Success = true; 207 if (Arg *A = Args.getLastArg(OPT_analyzer_store)) { 208 StringRef Name = A->getValue(); 209 AnalysisStores Value = llvm::StringSwitch<AnalysisStores>(Name) 210 #define ANALYSIS_STORE(NAME, CMDFLAG, DESC, CREATFN) \ 211 .Case(CMDFLAG, NAME##Model) 212 #include "clang/StaticAnalyzer/Core/Analyses.def" 213 .Default(NumStores); 214 if (Value == NumStores) { 215 Diags.Report(diag::err_drv_invalid_value) 216 << A->getAsString(Args) << Name; 217 Success = false; 218 } else { 219 Opts.AnalysisStoreOpt = Value; 220 } 221 } 222 223 if (Arg *A = Args.getLastArg(OPT_analyzer_constraints)) { 224 StringRef Name = A->getValue(); 225 AnalysisConstraints Value = llvm::StringSwitch<AnalysisConstraints>(Name) 226 #define ANALYSIS_CONSTRAINTS(NAME, CMDFLAG, DESC, CREATFN) \ 227 .Case(CMDFLAG, NAME##Model) 228 #include "clang/StaticAnalyzer/Core/Analyses.def" 229 .Default(NumConstraints); 230 if (Value == NumConstraints) { 231 Diags.Report(diag::err_drv_invalid_value) 232 << A->getAsString(Args) << Name; 233 Success = false; 234 } else { 235 Opts.AnalysisConstraintsOpt = Value; 236 } 237 } 238 239 if (Arg *A = Args.getLastArg(OPT_analyzer_output)) { 240 StringRef Name = A->getValue(); 241 AnalysisDiagClients Value = llvm::StringSwitch<AnalysisDiagClients>(Name) 242 #define ANALYSIS_DIAGNOSTICS(NAME, CMDFLAG, DESC, CREATFN) \ 243 .Case(CMDFLAG, PD_##NAME) 244 #include "clang/StaticAnalyzer/Core/Analyses.def" 245 .Default(NUM_ANALYSIS_DIAG_CLIENTS); 246 if (Value == NUM_ANALYSIS_DIAG_CLIENTS) { 247 Diags.Report(diag::err_drv_invalid_value) 248 << A->getAsString(Args) << Name; 249 Success = false; 250 } else { 251 Opts.AnalysisDiagOpt = Value; 252 } 253 } 254 255 if (Arg *A = Args.getLastArg(OPT_analyzer_purge)) { 256 StringRef Name = A->getValue(); 257 AnalysisPurgeMode Value = llvm::StringSwitch<AnalysisPurgeMode>(Name) 258 #define ANALYSIS_PURGE(NAME, CMDFLAG, DESC) \ 259 .Case(CMDFLAG, NAME) 260 #include "clang/StaticAnalyzer/Core/Analyses.def" 261 .Default(NumPurgeModes); 262 if (Value == NumPurgeModes) { 263 Diags.Report(diag::err_drv_invalid_value) 264 << A->getAsString(Args) << Name; 265 Success = false; 266 } else { 267 Opts.AnalysisPurgeOpt = Value; 268 } 269 } 270 271 if (Arg *A = Args.getLastArg(OPT_analyzer_inlining_mode)) { 272 StringRef Name = A->getValue(); 273 AnalysisInliningMode Value = llvm::StringSwitch<AnalysisInliningMode>(Name) 274 #define ANALYSIS_INLINING_MODE(NAME, CMDFLAG, DESC) \ 275 .Case(CMDFLAG, NAME) 276 #include "clang/StaticAnalyzer/Core/Analyses.def" 277 .Default(NumInliningModes); 278 if (Value == NumInliningModes) { 279 Diags.Report(diag::err_drv_invalid_value) 280 << A->getAsString(Args) << Name; 281 Success = false; 282 } else { 283 Opts.InliningMode = Value; 284 } 285 } 286 287 Opts.ShowCheckerHelp = Args.hasArg(OPT_analyzer_checker_help); 288 Opts.ShowCheckerHelpHidden = Args.hasArg(OPT_analyzer_checker_help_hidden); 289 Opts.ShowConfigOptionsList = Args.hasArg(OPT_analyzer_config_help); 290 Opts.ShowEnabledCheckerList = Args.hasArg(OPT_analyzer_list_enabled_checkers); 291 Opts.ShouldEmitErrorsOnInvalidConfigValue = 292 /* negated */!llvm::StringSwitch<bool>( 293 Args.getLastArgValue(OPT_analyzer_config_compatibility_mode)) 294 .Case("true", true) 295 .Case("false", false) 296 .Default(false); 297 Opts.DisableAllChecks = Args.hasArg(OPT_analyzer_disable_all_checks); 298 299 Opts.visualizeExplodedGraphWithGraphViz = 300 Args.hasArg(OPT_analyzer_viz_egraph_graphviz); 301 Opts.DumpExplodedGraphTo = Args.getLastArgValue(OPT_analyzer_dump_egraph); 302 Opts.NoRetryExhausted = Args.hasArg(OPT_analyzer_disable_retry_exhausted); 303 Opts.AnalyzeAll = Args.hasArg(OPT_analyzer_opt_analyze_headers); 304 Opts.AnalyzerDisplayProgress = Args.hasArg(OPT_analyzer_display_progress); 305 Opts.AnalyzeNestedBlocks = 306 Args.hasArg(OPT_analyzer_opt_analyze_nested_blocks); 307 Opts.AnalyzeSpecificFunction = Args.getLastArgValue(OPT_analyze_function); 308 Opts.UnoptimizedCFG = Args.hasArg(OPT_analysis_UnoptimizedCFG); 309 Opts.TrimGraph = Args.hasArg(OPT_trim_egraph); 310 Opts.maxBlockVisitOnPath = 311 getLastArgIntValue(Args, OPT_analyzer_max_loop, 4, Diags); 312 Opts.PrintStats = Args.hasArg(OPT_analyzer_stats); 313 Opts.InlineMaxStackDepth = 314 getLastArgIntValue(Args, OPT_analyzer_inline_max_stack_depth, 315 Opts.InlineMaxStackDepth, Diags); 316 317 Opts.CheckersControlList.clear(); 318 for (const Arg *A : 319 Args.filtered(OPT_analyzer_checker, OPT_analyzer_disable_checker)) { 320 A->claim(); 321 bool enable = (A->getOption().getID() == OPT_analyzer_checker); 322 // We can have a list of comma separated checker names, e.g: 323 // '-analyzer-checker=cocoa,unix' 324 StringRef checkerList = A->getValue(); 325 SmallVector<StringRef, 4> checkers; 326 checkerList.split(checkers, ","); 327 for (auto checker : checkers) 328 Opts.CheckersControlList.emplace_back(checker, enable); 329 } 330 331 // Go through the analyzer configuration options. 332 for (const auto *A : Args.filtered(OPT_analyzer_config)) { 333 334 // We can have a list of comma separated config names, e.g: 335 // '-analyzer-config key1=val1,key2=val2' 336 StringRef configList = A->getValue(); 337 SmallVector<StringRef, 4> configVals; 338 configList.split(configVals, ","); 339 for (const auto &configVal : configVals) { 340 StringRef key, val; 341 std::tie(key, val) = configVal.split("="); 342 if (val.empty()) { 343 Diags.Report(SourceLocation(), 344 diag::err_analyzer_config_no_value) << configVal; 345 Success = false; 346 break; 347 } 348 if (val.find('=') != StringRef::npos) { 349 Diags.Report(SourceLocation(), 350 diag::err_analyzer_config_multiple_values) 351 << configVal; 352 Success = false; 353 break; 354 } 355 356 // TODO: Check checker options too, possibly in CheckerRegistry. 357 // Leave unknown non-checker configs unclaimed. 358 if (!key.contains(":") && Opts.isUnknownAnalyzerConfig(key)) { 359 if (Opts.ShouldEmitErrorsOnInvalidConfigValue) 360 Diags.Report(diag::err_analyzer_config_unknown) << key; 361 continue; 362 } 363 364 A->claim(); 365 Opts.Config[key] = val; 366 } 367 } 368 369 if (Opts.ShouldEmitErrorsOnInvalidConfigValue) 370 parseAnalyzerConfigs(Opts, &Diags); 371 else 372 parseAnalyzerConfigs(Opts, nullptr); 373 374 llvm::raw_string_ostream os(Opts.FullCompilerInvocation); 375 for (unsigned i = 0; i < Args.getNumInputArgStrings(); ++i) { 376 if (i != 0) 377 os << " "; 378 os << Args.getArgString(i); 379 } 380 os.flush(); 381 382 return Success; 383 } 384 385 static StringRef getStringOption(AnalyzerOptions::ConfigTable &Config, 386 StringRef OptionName, StringRef DefaultVal) { 387 return Config.insert({OptionName, DefaultVal}).first->second; 388 } 389 390 static void initOption(AnalyzerOptions::ConfigTable &Config, 391 DiagnosticsEngine *Diags, 392 StringRef &OptionField, StringRef Name, 393 StringRef DefaultVal) { 394 // String options may be known to invalid (e.g. if the expected string is a 395 // file name, but the file does not exist), those will have to be checked in 396 // parseConfigs. 397 OptionField = getStringOption(Config, Name, DefaultVal); 398 } 399 400 static void initOption(AnalyzerOptions::ConfigTable &Config, 401 DiagnosticsEngine *Diags, 402 bool &OptionField, StringRef Name, bool DefaultVal) { 403 auto PossiblyInvalidVal = llvm::StringSwitch<Optional<bool>>( 404 getStringOption(Config, Name, (DefaultVal ? "true" : "false"))) 405 .Case("true", true) 406 .Case("false", false) 407 .Default(None); 408 409 if (!PossiblyInvalidVal) { 410 if (Diags) 411 Diags->Report(diag::err_analyzer_config_invalid_input) 412 << Name << "a boolean"; 413 else 414 OptionField = DefaultVal; 415 } else 416 OptionField = PossiblyInvalidVal.getValue(); 417 } 418 419 static void initOption(AnalyzerOptions::ConfigTable &Config, 420 DiagnosticsEngine *Diags, 421 unsigned &OptionField, StringRef Name, 422 unsigned DefaultVal) { 423 424 OptionField = DefaultVal; 425 bool HasFailed = getStringOption(Config, Name, std::to_string(DefaultVal)) 426 .getAsInteger(0, OptionField); 427 if (Diags && HasFailed) 428 Diags->Report(diag::err_analyzer_config_invalid_input) 429 << Name << "an unsigned"; 430 } 431 432 static void parseAnalyzerConfigs(AnalyzerOptions &AnOpts, 433 DiagnosticsEngine *Diags) { 434 // TODO: There's no need to store the entire configtable, it'd be plenty 435 // enough tostore checker options. 436 437 #define ANALYZER_OPTION(TYPE, NAME, CMDFLAG, DESC, DEFAULT_VAL) \ 438 initOption(AnOpts.Config, Diags, AnOpts.NAME, CMDFLAG, DEFAULT_VAL); 439 440 #define ANALYZER_OPTION_DEPENDS_ON_USER_MODE(TYPE, NAME, CMDFLAG, DESC, \ 441 SHALLOW_VAL, DEEP_VAL) \ 442 switch (AnOpts.getUserMode()) { \ 443 case UMK_Shallow: \ 444 initOption(AnOpts.Config, Diags, AnOpts.NAME, CMDFLAG, SHALLOW_VAL); \ 445 break; \ 446 case UMK_Deep: \ 447 initOption(AnOpts.Config, Diags, AnOpts.NAME, CMDFLAG, DEEP_VAL); \ 448 break; \ 449 } \ 450 451 #include "clang/StaticAnalyzer/Core/AnalyzerOptions.def" 452 #undef ANALYZER_OPTION 453 #undef ANALYZER_OPTION_DEPENDS_ON_USER_MODE 454 455 // At this point, AnalyzerOptions is configured. Let's validate some options. 456 457 if (!Diags) 458 return; 459 460 if (!AnOpts.CTUDir.empty() && !llvm::sys::fs::is_directory(AnOpts.CTUDir)) 461 Diags->Report(diag::err_analyzer_config_invalid_input) << "ctu-dir" 462 << "a filename"; 463 464 if (!AnOpts.ModelPath.empty() && 465 !llvm::sys::fs::is_directory(AnOpts.ModelPath)) 466 Diags->Report(diag::err_analyzer_config_invalid_input) << "model-path" 467 << "a filename"; 468 } 469 470 static bool ParseMigratorArgs(MigratorOptions &Opts, ArgList &Args) { 471 Opts.NoNSAllocReallocError = Args.hasArg(OPT_migrator_no_nsalloc_error); 472 Opts.NoFinalizeRemoval = Args.hasArg(OPT_migrator_no_finalize_removal); 473 return true; 474 } 475 476 static void ParseCommentArgs(CommentOptions &Opts, ArgList &Args) { 477 Opts.BlockCommandNames = Args.getAllArgValues(OPT_fcomment_block_commands); 478 Opts.ParseAllComments = Args.hasArg(OPT_fparse_all_comments); 479 } 480 481 static StringRef getCodeModel(ArgList &Args, DiagnosticsEngine &Diags) { 482 if (Arg *A = Args.getLastArg(OPT_mcode_model)) { 483 StringRef Value = A->getValue(); 484 if (Value == "small" || Value == "kernel" || Value == "medium" || 485 Value == "large" || Value == "tiny") 486 return Value; 487 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Value; 488 } 489 return "default"; 490 } 491 492 static llvm::Reloc::Model getRelocModel(ArgList &Args, 493 DiagnosticsEngine &Diags) { 494 if (Arg *A = Args.getLastArg(OPT_mrelocation_model)) { 495 StringRef Value = A->getValue(); 496 auto RM = llvm::StringSwitch<llvm::Optional<llvm::Reloc::Model>>(Value) 497 .Case("static", llvm::Reloc::Static) 498 .Case("pic", llvm::Reloc::PIC_) 499 .Case("ropi", llvm::Reloc::ROPI) 500 .Case("rwpi", llvm::Reloc::RWPI) 501 .Case("ropi-rwpi", llvm::Reloc::ROPI_RWPI) 502 .Case("dynamic-no-pic", llvm::Reloc::DynamicNoPIC) 503 .Default(None); 504 if (RM.hasValue()) 505 return *RM; 506 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Value; 507 } 508 return llvm::Reloc::PIC_; 509 } 510 511 /// Create a new Regex instance out of the string value in \p RpassArg. 512 /// It returns a pointer to the newly generated Regex instance. 513 static std::shared_ptr<llvm::Regex> 514 GenerateOptimizationRemarkRegex(DiagnosticsEngine &Diags, ArgList &Args, 515 Arg *RpassArg) { 516 StringRef Val = RpassArg->getValue(); 517 std::string RegexError; 518 std::shared_ptr<llvm::Regex> Pattern = std::make_shared<llvm::Regex>(Val); 519 if (!Pattern->isValid(RegexError)) { 520 Diags.Report(diag::err_drv_optimization_remark_pattern) 521 << RegexError << RpassArg->getAsString(Args); 522 Pattern.reset(); 523 } 524 return Pattern; 525 } 526 527 static bool parseDiagnosticLevelMask(StringRef FlagName, 528 const std::vector<std::string> &Levels, 529 DiagnosticsEngine *Diags, 530 DiagnosticLevelMask &M) { 531 bool Success = true; 532 for (const auto &Level : Levels) { 533 DiagnosticLevelMask const PM = 534 llvm::StringSwitch<DiagnosticLevelMask>(Level) 535 .Case("note", DiagnosticLevelMask::Note) 536 .Case("remark", DiagnosticLevelMask::Remark) 537 .Case("warning", DiagnosticLevelMask::Warning) 538 .Case("error", DiagnosticLevelMask::Error) 539 .Default(DiagnosticLevelMask::None); 540 if (PM == DiagnosticLevelMask::None) { 541 Success = false; 542 if (Diags) 543 Diags->Report(diag::err_drv_invalid_value) << FlagName << Level; 544 } 545 M = M | PM; 546 } 547 return Success; 548 } 549 550 static void parseSanitizerKinds(StringRef FlagName, 551 const std::vector<std::string> &Sanitizers, 552 DiagnosticsEngine &Diags, SanitizerSet &S) { 553 for (const auto &Sanitizer : Sanitizers) { 554 SanitizerMask K = parseSanitizerValue(Sanitizer, /*AllowGroups=*/false); 555 if (K == SanitizerMask()) 556 Diags.Report(diag::err_drv_invalid_value) << FlagName << Sanitizer; 557 else 558 S.set(K, true); 559 } 560 } 561 562 static void parseXRayInstrumentationBundle(StringRef FlagName, StringRef Bundle, 563 ArgList &Args, DiagnosticsEngine &D, 564 XRayInstrSet &S) { 565 llvm::SmallVector<StringRef, 2> BundleParts; 566 llvm::SplitString(Bundle, BundleParts, ","); 567 for (const auto B : BundleParts) { 568 auto Mask = parseXRayInstrValue(B); 569 if (Mask == XRayInstrKind::None) 570 if (B != "none") 571 D.Report(diag::err_drv_invalid_value) << FlagName << Bundle; 572 else 573 S.Mask = Mask; 574 else if (Mask == XRayInstrKind::All) 575 S.Mask = Mask; 576 else 577 S.set(Mask, true); 578 } 579 } 580 581 // Set the profile kind for fprofile-instrument. 582 static void setPGOInstrumentor(CodeGenOptions &Opts, ArgList &Args, 583 DiagnosticsEngine &Diags) { 584 Arg *A = Args.getLastArg(OPT_fprofile_instrument_EQ); 585 if (A == nullptr) 586 return; 587 StringRef S = A->getValue(); 588 unsigned I = llvm::StringSwitch<unsigned>(S) 589 .Case("none", CodeGenOptions::ProfileNone) 590 .Case("clang", CodeGenOptions::ProfileClangInstr) 591 .Case("llvm", CodeGenOptions::ProfileIRInstr) 592 .Case("csllvm", CodeGenOptions::ProfileCSIRInstr) 593 .Default(~0U); 594 if (I == ~0U) { 595 Diags.Report(diag::err_drv_invalid_pgo_instrumentor) << A->getAsString(Args) 596 << S; 597 return; 598 } 599 auto Instrumentor = static_cast<CodeGenOptions::ProfileInstrKind>(I); 600 Opts.setProfileInstr(Instrumentor); 601 } 602 603 // Set the profile kind using fprofile-instrument-use-path. 604 static void setPGOUseInstrumentor(CodeGenOptions &Opts, 605 const Twine &ProfileName) { 606 auto ReaderOrErr = llvm::IndexedInstrProfReader::create(ProfileName); 607 // In error, return silently and let Clang PGOUse report the error message. 608 if (auto E = ReaderOrErr.takeError()) { 609 llvm::consumeError(std::move(E)); 610 Opts.setProfileUse(CodeGenOptions::ProfileClangInstr); 611 return; 612 } 613 std::unique_ptr<llvm::IndexedInstrProfReader> PGOReader = 614 std::move(ReaderOrErr.get()); 615 if (PGOReader->isIRLevelProfile()) { 616 if (PGOReader->hasCSIRLevelProfile()) 617 Opts.setProfileUse(CodeGenOptions::ProfileCSIRInstr); 618 else 619 Opts.setProfileUse(CodeGenOptions::ProfileIRInstr); 620 } else 621 Opts.setProfileUse(CodeGenOptions::ProfileClangInstr); 622 } 623 624 static bool ParseCodeGenArgs(CodeGenOptions &Opts, ArgList &Args, InputKind IK, 625 DiagnosticsEngine &Diags, 626 const TargetOptions &TargetOpts, 627 const FrontendOptions &FrontendOpts) { 628 bool Success = true; 629 llvm::Triple Triple = llvm::Triple(TargetOpts.Triple); 630 631 unsigned OptimizationLevel = getOptimizationLevel(Args, IK, Diags); 632 // TODO: This could be done in Driver 633 unsigned MaxOptLevel = 3; 634 if (OptimizationLevel > MaxOptLevel) { 635 // If the optimization level is not supported, fall back on the default 636 // optimization 637 Diags.Report(diag::warn_drv_optimization_value) 638 << Args.getLastArg(OPT_O)->getAsString(Args) << "-O" << MaxOptLevel; 639 OptimizationLevel = MaxOptLevel; 640 } 641 Opts.OptimizationLevel = OptimizationLevel; 642 643 // At O0 we want to fully disable inlining outside of cases marked with 644 // 'alwaysinline' that are required for correctness. 645 Opts.setInlining((Opts.OptimizationLevel == 0) 646 ? CodeGenOptions::OnlyAlwaysInlining 647 : CodeGenOptions::NormalInlining); 648 // Explicit inlining flags can disable some or all inlining even at 649 // optimization levels above zero. 650 if (Arg *InlineArg = Args.getLastArg( 651 options::OPT_finline_functions, options::OPT_finline_hint_functions, 652 options::OPT_fno_inline_functions, options::OPT_fno_inline)) { 653 if (Opts.OptimizationLevel > 0) { 654 const Option &InlineOpt = InlineArg->getOption(); 655 if (InlineOpt.matches(options::OPT_finline_functions)) 656 Opts.setInlining(CodeGenOptions::NormalInlining); 657 else if (InlineOpt.matches(options::OPT_finline_hint_functions)) 658 Opts.setInlining(CodeGenOptions::OnlyHintInlining); 659 else 660 Opts.setInlining(CodeGenOptions::OnlyAlwaysInlining); 661 } 662 } 663 664 Opts.ExperimentalNewPassManager = Args.hasFlag( 665 OPT_fexperimental_new_pass_manager, OPT_fno_experimental_new_pass_manager, 666 /* Default */ ENABLE_EXPERIMENTAL_NEW_PASS_MANAGER); 667 668 Opts.DebugPassManager = 669 Args.hasFlag(OPT_fdebug_pass_manager, OPT_fno_debug_pass_manager, 670 /* Default */ false); 671 672 if (Arg *A = Args.getLastArg(OPT_fveclib)) { 673 StringRef Name = A->getValue(); 674 if (Name == "Accelerate") 675 Opts.setVecLib(CodeGenOptions::Accelerate); 676 else if (Name == "SVML") 677 Opts.setVecLib(CodeGenOptions::SVML); 678 else if (Name == "none") 679 Opts.setVecLib(CodeGenOptions::NoLibrary); 680 else 681 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Name; 682 } 683 684 if (Arg *A = Args.getLastArg(OPT_debug_info_kind_EQ)) { 685 unsigned Val = 686 llvm::StringSwitch<unsigned>(A->getValue()) 687 .Case("line-tables-only", codegenoptions::DebugLineTablesOnly) 688 .Case("line-directives-only", codegenoptions::DebugDirectivesOnly) 689 .Case("limited", codegenoptions::LimitedDebugInfo) 690 .Case("standalone", codegenoptions::FullDebugInfo) 691 .Default(~0U); 692 if (Val == ~0U) 693 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) 694 << A->getValue(); 695 else 696 Opts.setDebugInfo(static_cast<codegenoptions::DebugInfoKind>(Val)); 697 } 698 if (Arg *A = Args.getLastArg(OPT_debugger_tuning_EQ)) { 699 unsigned Val = llvm::StringSwitch<unsigned>(A->getValue()) 700 .Case("gdb", unsigned(llvm::DebuggerKind::GDB)) 701 .Case("lldb", unsigned(llvm::DebuggerKind::LLDB)) 702 .Case("sce", unsigned(llvm::DebuggerKind::SCE)) 703 .Default(~0U); 704 if (Val == ~0U) 705 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) 706 << A->getValue(); 707 else 708 Opts.setDebuggerTuning(static_cast<llvm::DebuggerKind>(Val)); 709 } 710 Opts.DwarfVersion = getLastArgIntValue(Args, OPT_dwarf_version_EQ, 0, Diags); 711 Opts.DebugColumnInfo = Args.hasArg(OPT_dwarf_column_info); 712 Opts.EmitCodeView = Args.hasArg(OPT_gcodeview); 713 Opts.CodeViewGHash = Args.hasArg(OPT_gcodeview_ghash); 714 Opts.MacroDebugInfo = Args.hasArg(OPT_debug_info_macro); 715 Opts.WholeProgramVTables = Args.hasArg(OPT_fwhole_program_vtables); 716 Opts.LTOVisibilityPublicStd = Args.hasArg(OPT_flto_visibility_public_std); 717 Opts.SplitDwarfFile = Args.getLastArgValue(OPT_split_dwarf_file); 718 Opts.SplitDwarfInlining = !Args.hasArg(OPT_fno_split_dwarf_inlining); 719 720 if (Arg *A = 721 Args.getLastArg(OPT_enable_split_dwarf, OPT_enable_split_dwarf_EQ)) { 722 if (A->getOption().matches(options::OPT_enable_split_dwarf)) { 723 Opts.setSplitDwarfMode(CodeGenOptions::SplitFileFission); 724 } else { 725 StringRef Name = A->getValue(); 726 if (Name == "single") 727 Opts.setSplitDwarfMode(CodeGenOptions::SingleFileFission); 728 else if (Name == "split") 729 Opts.setSplitDwarfMode(CodeGenOptions::SplitFileFission); 730 else 731 Diags.Report(diag::err_drv_invalid_value) 732 << A->getAsString(Args) << Name; 733 } 734 } 735 736 Opts.DebugTypeExtRefs = Args.hasArg(OPT_dwarf_ext_refs); 737 Opts.DebugExplicitImport = Args.hasArg(OPT_dwarf_explicit_import); 738 Opts.DebugFwdTemplateParams = Args.hasArg(OPT_debug_forward_template_params); 739 Opts.EmbedSource = Args.hasArg(OPT_gembed_source); 740 741 for (const auto &Arg : Args.getAllArgValues(OPT_fdebug_prefix_map_EQ)) 742 Opts.DebugPrefixMap.insert(StringRef(Arg).split('=')); 743 744 if (const Arg *A = 745 Args.getLastArg(OPT_emit_llvm_uselists, OPT_no_emit_llvm_uselists)) 746 Opts.EmitLLVMUseLists = A->getOption().getID() == OPT_emit_llvm_uselists; 747 748 Opts.DisableLLVMPasses = Args.hasArg(OPT_disable_llvm_passes); 749 Opts.DisableLifetimeMarkers = Args.hasArg(OPT_disable_lifetimemarkers); 750 Opts.DisableO0ImplyOptNone = Args.hasArg(OPT_disable_O0_optnone); 751 Opts.DisableRedZone = Args.hasArg(OPT_disable_red_zone); 752 Opts.IndirectTlsSegRefs = Args.hasArg(OPT_mno_tls_direct_seg_refs); 753 Opts.ForbidGuardVariables = Args.hasArg(OPT_fforbid_guard_variables); 754 Opts.UseRegisterSizedBitfieldAccess = Args.hasArg( 755 OPT_fuse_register_sized_bitfield_access); 756 Opts.RelaxedAliasing = Args.hasArg(OPT_relaxed_aliasing); 757 Opts.StructPathTBAA = !Args.hasArg(OPT_no_struct_path_tbaa); 758 Opts.NewStructPathTBAA = !Args.hasArg(OPT_no_struct_path_tbaa) && 759 Args.hasArg(OPT_new_struct_path_tbaa); 760 Opts.FineGrainedBitfieldAccesses = 761 Args.hasFlag(OPT_ffine_grained_bitfield_accesses, 762 OPT_fno_fine_grained_bitfield_accesses, false); 763 Opts.DwarfDebugFlags = Args.getLastArgValue(OPT_dwarf_debug_flags); 764 Opts.RecordCommandLine = Args.getLastArgValue(OPT_record_command_line); 765 Opts.MergeAllConstants = Args.hasArg(OPT_fmerge_all_constants); 766 Opts.NoCommon = Args.hasArg(OPT_fno_common); 767 Opts.NoImplicitFloat = Args.hasArg(OPT_no_implicit_float); 768 Opts.OptimizeSize = getOptimizationLevelSize(Args); 769 Opts.SimplifyLibCalls = !(Args.hasArg(OPT_fno_builtin) || 770 Args.hasArg(OPT_ffreestanding)); 771 if (Opts.SimplifyLibCalls) 772 getAllNoBuiltinFuncValues(Args, Opts.NoBuiltinFuncs); 773 Opts.UnrollLoops = 774 Args.hasFlag(OPT_funroll_loops, OPT_fno_unroll_loops, 775 (Opts.OptimizationLevel > 1)); 776 Opts.RerollLoops = Args.hasArg(OPT_freroll_loops); 777 778 Opts.DisableIntegratedAS = Args.hasArg(OPT_fno_integrated_as); 779 Opts.Autolink = !Args.hasArg(OPT_fno_autolink); 780 Opts.SampleProfileFile = Args.getLastArgValue(OPT_fprofile_sample_use_EQ); 781 Opts.DebugInfoForProfiling = Args.hasFlag( 782 OPT_fdebug_info_for_profiling, OPT_fno_debug_info_for_profiling, false); 783 Opts.DebugNameTable = static_cast<unsigned>( 784 Args.hasArg(OPT_ggnu_pubnames) 785 ? llvm::DICompileUnit::DebugNameTableKind::GNU 786 : Args.hasArg(OPT_gpubnames) 787 ? llvm::DICompileUnit::DebugNameTableKind::Default 788 : llvm::DICompileUnit::DebugNameTableKind::None); 789 Opts.DebugRangesBaseAddress = Args.hasArg(OPT_fdebug_ranges_base_address); 790 791 setPGOInstrumentor(Opts, Args, Diags); 792 Opts.InstrProfileOutput = 793 Args.getLastArgValue(OPT_fprofile_instrument_path_EQ); 794 Opts.ProfileInstrumentUsePath = 795 Args.getLastArgValue(OPT_fprofile_instrument_use_path_EQ); 796 if (!Opts.ProfileInstrumentUsePath.empty()) 797 setPGOUseInstrumentor(Opts, Opts.ProfileInstrumentUsePath); 798 Opts.ProfileRemappingFile = 799 Args.getLastArgValue(OPT_fprofile_remapping_file_EQ); 800 if (!Opts.ProfileRemappingFile.empty() && !Opts.ExperimentalNewPassManager) { 801 Diags.Report(diag::err_drv_argument_only_allowed_with) 802 << Args.getLastArg(OPT_fprofile_remapping_file_EQ)->getAsString(Args) 803 << "-fexperimental-new-pass-manager"; 804 } 805 806 Opts.CoverageMapping = 807 Args.hasFlag(OPT_fcoverage_mapping, OPT_fno_coverage_mapping, false); 808 Opts.DumpCoverageMapping = Args.hasArg(OPT_dump_coverage_mapping); 809 Opts.AsmVerbose = Args.hasArg(OPT_masm_verbose); 810 Opts.PreserveAsmComments = !Args.hasArg(OPT_fno_preserve_as_comments); 811 Opts.AssumeSaneOperatorNew = !Args.hasArg(OPT_fno_assume_sane_operator_new); 812 Opts.ObjCAutoRefCountExceptions = Args.hasArg(OPT_fobjc_arc_exceptions); 813 Opts.CXAAtExit = !Args.hasArg(OPT_fno_use_cxa_atexit); 814 Opts.RegisterGlobalDtorsWithAtExit = 815 Args.hasArg(OPT_fregister_global_dtors_with_atexit); 816 Opts.CXXCtorDtorAliases = Args.hasArg(OPT_mconstructor_aliases); 817 Opts.CodeModel = TargetOpts.CodeModel; 818 Opts.DebugPass = Args.getLastArgValue(OPT_mdebug_pass); 819 Opts.DisableFPElim = 820 (Args.hasArg(OPT_mdisable_fp_elim) || Args.hasArg(OPT_pg)); 821 Opts.DisableFree = Args.hasArg(OPT_disable_free); 822 Opts.DiscardValueNames = Args.hasArg(OPT_discard_value_names); 823 Opts.DisableTailCalls = Args.hasArg(OPT_mdisable_tail_calls); 824 Opts.NoEscapingBlockTailCalls = 825 Args.hasArg(OPT_fno_escaping_block_tail_calls); 826 Opts.FloatABI = Args.getLastArgValue(OPT_mfloat_abi); 827 Opts.LessPreciseFPMAD = Args.hasArg(OPT_cl_mad_enable) || 828 Args.hasArg(OPT_cl_unsafe_math_optimizations) || 829 Args.hasArg(OPT_cl_fast_relaxed_math); 830 Opts.LimitFloatPrecision = Args.getLastArgValue(OPT_mlimit_float_precision); 831 Opts.NoInfsFPMath = (Args.hasArg(OPT_menable_no_infinities) || 832 Args.hasArg(OPT_cl_finite_math_only) || 833 Args.hasArg(OPT_cl_fast_relaxed_math)); 834 Opts.NoNaNsFPMath = (Args.hasArg(OPT_menable_no_nans) || 835 Args.hasArg(OPT_cl_unsafe_math_optimizations) || 836 Args.hasArg(OPT_cl_finite_math_only) || 837 Args.hasArg(OPT_cl_fast_relaxed_math)); 838 Opts.NoSignedZeros = (Args.hasArg(OPT_fno_signed_zeros) || 839 Args.hasArg(OPT_cl_no_signed_zeros) || 840 Args.hasArg(OPT_cl_unsafe_math_optimizations) || 841 Args.hasArg(OPT_cl_fast_relaxed_math)); 842 Opts.Reassociate = Args.hasArg(OPT_mreassociate); 843 Opts.FlushDenorm = Args.hasArg(OPT_cl_denorms_are_zero) || 844 (Args.hasArg(OPT_fcuda_is_device) && 845 Args.hasArg(OPT_fcuda_flush_denormals_to_zero)); 846 Opts.CorrectlyRoundedDivSqrt = 847 Args.hasArg(OPT_cl_fp32_correctly_rounded_divide_sqrt); 848 Opts.UniformWGSize = 849 Args.hasArg(OPT_cl_uniform_work_group_size); 850 Opts.Reciprocals = Args.getAllArgValues(OPT_mrecip_EQ); 851 Opts.ReciprocalMath = Args.hasArg(OPT_freciprocal_math); 852 Opts.NoTrappingMath = Args.hasArg(OPT_fno_trapping_math); 853 Opts.StrictFloatCastOverflow = 854 !Args.hasArg(OPT_fno_strict_float_cast_overflow); 855 856 Opts.NoZeroInitializedInBSS = Args.hasArg(OPT_mno_zero_initialized_in_bss); 857 Opts.NumRegisterParameters = getLastArgIntValue(Args, OPT_mregparm, 0, Diags); 858 Opts.NoExecStack = Args.hasArg(OPT_mno_exec_stack); 859 Opts.FatalWarnings = Args.hasArg(OPT_massembler_fatal_warnings); 860 Opts.EnableSegmentedStacks = Args.hasArg(OPT_split_stacks); 861 Opts.RelaxAll = Args.hasArg(OPT_mrelax_all); 862 Opts.IncrementalLinkerCompatible = 863 Args.hasArg(OPT_mincremental_linker_compatible); 864 Opts.PIECopyRelocations = 865 Args.hasArg(OPT_mpie_copy_relocations); 866 Opts.NoPLT = Args.hasArg(OPT_fno_plt); 867 Opts.OmitLeafFramePointer = Args.hasArg(OPT_momit_leaf_frame_pointer); 868 Opts.SaveTempLabels = Args.hasArg(OPT_msave_temp_labels); 869 Opts.NoDwarfDirectoryAsm = Args.hasArg(OPT_fno_dwarf_directory_asm); 870 Opts.SoftFloat = Args.hasArg(OPT_msoft_float); 871 Opts.StrictEnums = Args.hasArg(OPT_fstrict_enums); 872 Opts.StrictReturn = !Args.hasArg(OPT_fno_strict_return); 873 Opts.StrictVTablePointers = Args.hasArg(OPT_fstrict_vtable_pointers); 874 Opts.ForceEmitVTables = Args.hasArg(OPT_fforce_emit_vtables); 875 Opts.UnsafeFPMath = Args.hasArg(OPT_menable_unsafe_fp_math) || 876 Args.hasArg(OPT_cl_unsafe_math_optimizations) || 877 Args.hasArg(OPT_cl_fast_relaxed_math); 878 Opts.UnwindTables = Args.hasArg(OPT_munwind_tables); 879 Opts.RelocationModel = getRelocModel(Args, Diags); 880 Opts.ThreadModel = Args.getLastArgValue(OPT_mthread_model, "posix"); 881 if (Opts.ThreadModel != "posix" && Opts.ThreadModel != "single") 882 Diags.Report(diag::err_drv_invalid_value) 883 << Args.getLastArg(OPT_mthread_model)->getAsString(Args) 884 << Opts.ThreadModel; 885 Opts.TrapFuncName = Args.getLastArgValue(OPT_ftrap_function_EQ); 886 Opts.UseInitArray = Args.hasArg(OPT_fuse_init_array); 887 888 Opts.FunctionSections = Args.hasFlag(OPT_ffunction_sections, 889 OPT_fno_function_sections, false); 890 Opts.DataSections = Args.hasFlag(OPT_fdata_sections, 891 OPT_fno_data_sections, false); 892 Opts.StackSizeSection = 893 Args.hasFlag(OPT_fstack_size_section, OPT_fno_stack_size_section, false); 894 Opts.UniqueSectionNames = Args.hasFlag(OPT_funique_section_names, 895 OPT_fno_unique_section_names, true); 896 897 Opts.MergeFunctions = Args.hasArg(OPT_fmerge_functions); 898 899 Opts.NoUseJumpTables = Args.hasArg(OPT_fno_jump_tables); 900 901 Opts.NullPointerIsValid = Args.hasArg(OPT_fno_delete_null_pointer_checks); 902 903 Opts.ProfileSampleAccurate = Args.hasArg(OPT_fprofile_sample_accurate); 904 905 Opts.PrepareForLTO = Args.hasArg(OPT_flto, OPT_flto_EQ); 906 Opts.PrepareForThinLTO = false; 907 if (Arg *A = Args.getLastArg(OPT_flto_EQ)) { 908 StringRef S = A->getValue(); 909 if (S == "thin") 910 Opts.PrepareForThinLTO = true; 911 else if (S != "full") 912 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << S; 913 } 914 Opts.LTOUnit = Args.hasFlag(OPT_flto_unit, OPT_fno_lto_unit, false); 915 Opts.EnableSplitLTOUnit = Args.hasArg(OPT_fsplit_lto_unit); 916 if (Arg *A = Args.getLastArg(OPT_fthinlto_index_EQ)) { 917 if (IK.getLanguage() != InputKind::LLVM_IR) 918 Diags.Report(diag::err_drv_argument_only_allowed_with) 919 << A->getAsString(Args) << "-x ir"; 920 Opts.ThinLTOIndexFile = Args.getLastArgValue(OPT_fthinlto_index_EQ); 921 } 922 if (Arg *A = Args.getLastArg(OPT_save_temps_EQ)) 923 Opts.SaveTempsFilePrefix = 924 llvm::StringSwitch<std::string>(A->getValue()) 925 .Case("obj", FrontendOpts.OutputFile) 926 .Default(llvm::sys::path::filename(FrontendOpts.OutputFile).str()); 927 928 Opts.ThinLinkBitcodeFile = Args.getLastArgValue(OPT_fthin_link_bitcode_EQ); 929 930 Opts.MSVolatile = Args.hasArg(OPT_fms_volatile); 931 932 Opts.VectorizeLoop = Args.hasArg(OPT_vectorize_loops); 933 Opts.VectorizeSLP = Args.hasArg(OPT_vectorize_slp); 934 935 Opts.PreferVectorWidth = Args.getLastArgValue(OPT_mprefer_vector_width_EQ); 936 937 Opts.MainFileName = Args.getLastArgValue(OPT_main_file_name); 938 Opts.VerifyModule = !Args.hasArg(OPT_disable_llvm_verifier); 939 940 Opts.ControlFlowGuard = Args.hasArg(OPT_cfguard); 941 942 Opts.DisableGCov = Args.hasArg(OPT_test_coverage); 943 Opts.EmitGcovArcs = Args.hasArg(OPT_femit_coverage_data); 944 Opts.EmitGcovNotes = Args.hasArg(OPT_femit_coverage_notes); 945 if (Opts.EmitGcovArcs || Opts.EmitGcovNotes) { 946 Opts.CoverageDataFile = Args.getLastArgValue(OPT_coverage_data_file); 947 Opts.CoverageNotesFile = Args.getLastArgValue(OPT_coverage_notes_file); 948 Opts.CoverageExtraChecksum = Args.hasArg(OPT_coverage_cfg_checksum); 949 Opts.CoverageNoFunctionNamesInData = 950 Args.hasArg(OPT_coverage_no_function_names_in_data); 951 Opts.ProfileFilterFiles = 952 Args.getLastArgValue(OPT_fprofile_filter_files_EQ); 953 Opts.ProfileExcludeFiles = 954 Args.getLastArgValue(OPT_fprofile_exclude_files_EQ); 955 Opts.CoverageExitBlockBeforeBody = 956 Args.hasArg(OPT_coverage_exit_block_before_body); 957 if (Args.hasArg(OPT_coverage_version_EQ)) { 958 StringRef CoverageVersion = Args.getLastArgValue(OPT_coverage_version_EQ); 959 if (CoverageVersion.size() != 4) { 960 Diags.Report(diag::err_drv_invalid_value) 961 << Args.getLastArg(OPT_coverage_version_EQ)->getAsString(Args) 962 << CoverageVersion; 963 } else { 964 memcpy(Opts.CoverageVersion, CoverageVersion.data(), 4); 965 } 966 } 967 } 968 // Handle -fembed-bitcode option. 969 if (Arg *A = Args.getLastArg(OPT_fembed_bitcode_EQ)) { 970 StringRef Name = A->getValue(); 971 unsigned Model = llvm::StringSwitch<unsigned>(Name) 972 .Case("off", CodeGenOptions::Embed_Off) 973 .Case("all", CodeGenOptions::Embed_All) 974 .Case("bitcode", CodeGenOptions::Embed_Bitcode) 975 .Case("marker", CodeGenOptions::Embed_Marker) 976 .Default(~0U); 977 if (Model == ~0U) { 978 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Name; 979 Success = false; 980 } else 981 Opts.setEmbedBitcode( 982 static_cast<CodeGenOptions::EmbedBitcodeKind>(Model)); 983 } 984 // FIXME: For backend options that are not yet recorded as function 985 // attributes in the IR, keep track of them so we can embed them in a 986 // separate data section and use them when building the bitcode. 987 if (Opts.getEmbedBitcode() == CodeGenOptions::Embed_All) { 988 for (const auto &A : Args) { 989 // Do not encode output and input. 990 if (A->getOption().getID() == options::OPT_o || 991 A->getOption().getID() == options::OPT_INPUT || 992 A->getOption().getID() == options::OPT_x || 993 A->getOption().getID() == options::OPT_fembed_bitcode || 994 (A->getOption().getGroup().isValid() && 995 A->getOption().getGroup().getID() == options::OPT_W_Group)) 996 continue; 997 ArgStringList ASL; 998 A->render(Args, ASL); 999 for (const auto &arg : ASL) { 1000 StringRef ArgStr(arg); 1001 Opts.CmdArgs.insert(Opts.CmdArgs.end(), ArgStr.begin(), ArgStr.end()); 1002 // using \00 to separate each commandline options. 1003 Opts.CmdArgs.push_back('\0'); 1004 } 1005 } 1006 } 1007 1008 Opts.PreserveVec3Type = Args.hasArg(OPT_fpreserve_vec3_type); 1009 Opts.InstrumentFunctions = Args.hasArg(OPT_finstrument_functions); 1010 Opts.InstrumentFunctionsAfterInlining = 1011 Args.hasArg(OPT_finstrument_functions_after_inlining); 1012 Opts.InstrumentFunctionEntryBare = 1013 Args.hasArg(OPT_finstrument_function_entry_bare); 1014 1015 Opts.XRayInstrumentFunctions = 1016 Args.hasArg(OPT_fxray_instrument); 1017 Opts.XRayAlwaysEmitCustomEvents = 1018 Args.hasArg(OPT_fxray_always_emit_customevents); 1019 Opts.XRayAlwaysEmitTypedEvents = 1020 Args.hasArg(OPT_fxray_always_emit_typedevents); 1021 Opts.XRayInstructionThreshold = 1022 getLastArgIntValue(Args, OPT_fxray_instruction_threshold_EQ, 200, Diags); 1023 1024 auto XRayInstrBundles = 1025 Args.getAllArgValues(OPT_fxray_instrumentation_bundle); 1026 if (XRayInstrBundles.empty()) 1027 Opts.XRayInstrumentationBundle.Mask = XRayInstrKind::All; 1028 else 1029 for (const auto &A : XRayInstrBundles) 1030 parseXRayInstrumentationBundle("-fxray-instrumentation-bundle=", A, Args, 1031 Diags, Opts.XRayInstrumentationBundle); 1032 1033 Opts.InstrumentForProfiling = Args.hasArg(OPT_pg); 1034 Opts.CallFEntry = Args.hasArg(OPT_mfentry); 1035 Opts.EmitOpenCLArgMetadata = Args.hasArg(OPT_cl_kernel_arg_info); 1036 1037 if (const Arg *A = Args.getLastArg(OPT_fcf_protection_EQ)) { 1038 StringRef Name = A->getValue(); 1039 if (Name == "full") { 1040 Opts.CFProtectionReturn = 1; 1041 Opts.CFProtectionBranch = 1; 1042 } else if (Name == "return") 1043 Opts.CFProtectionReturn = 1; 1044 else if (Name == "branch") 1045 Opts.CFProtectionBranch = 1; 1046 else if (Name != "none") { 1047 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Name; 1048 Success = false; 1049 } 1050 } 1051 1052 if (const Arg *A = Args.getLastArg(OPT_compress_debug_sections, 1053 OPT_compress_debug_sections_EQ)) { 1054 if (A->getOption().getID() == OPT_compress_debug_sections) { 1055 Opts.setCompressDebugSections(llvm::DebugCompressionType::Z); 1056 } else { 1057 auto DCT = llvm::StringSwitch<llvm::DebugCompressionType>(A->getValue()) 1058 .Case("none", llvm::DebugCompressionType::None) 1059 .Case("zlib", llvm::DebugCompressionType::Z) 1060 .Case("zlib-gnu", llvm::DebugCompressionType::GNU) 1061 .Default(llvm::DebugCompressionType::None); 1062 Opts.setCompressDebugSections(DCT); 1063 } 1064 } 1065 1066 Opts.RelaxELFRelocations = Args.hasArg(OPT_mrelax_relocations); 1067 Opts.DebugCompilationDir = Args.getLastArgValue(OPT_fdebug_compilation_dir); 1068 for (auto *A : 1069 Args.filtered(OPT_mlink_bitcode_file, OPT_mlink_builtin_bitcode)) { 1070 CodeGenOptions::BitcodeFileToLink F; 1071 F.Filename = A->getValue(); 1072 if (A->getOption().matches(OPT_mlink_builtin_bitcode)) { 1073 F.LinkFlags = llvm::Linker::Flags::LinkOnlyNeeded; 1074 // When linking CUDA bitcode, propagate function attributes so that 1075 // e.g. libdevice gets fast-math attrs if we're building with fast-math. 1076 F.PropagateAttrs = true; 1077 F.Internalize = true; 1078 } 1079 Opts.LinkBitcodeFiles.push_back(F); 1080 } 1081 Opts.SanitizeCoverageType = 1082 getLastArgIntValue(Args, OPT_fsanitize_coverage_type, 0, Diags); 1083 Opts.SanitizeCoverageIndirectCalls = 1084 Args.hasArg(OPT_fsanitize_coverage_indirect_calls); 1085 Opts.SanitizeCoverageTraceBB = Args.hasArg(OPT_fsanitize_coverage_trace_bb); 1086 Opts.SanitizeCoverageTraceCmp = Args.hasArg(OPT_fsanitize_coverage_trace_cmp); 1087 Opts.SanitizeCoverageTraceDiv = Args.hasArg(OPT_fsanitize_coverage_trace_div); 1088 Opts.SanitizeCoverageTraceGep = Args.hasArg(OPT_fsanitize_coverage_trace_gep); 1089 Opts.SanitizeCoverage8bitCounters = 1090 Args.hasArg(OPT_fsanitize_coverage_8bit_counters); 1091 Opts.SanitizeCoverageTracePC = Args.hasArg(OPT_fsanitize_coverage_trace_pc); 1092 Opts.SanitizeCoverageTracePCGuard = 1093 Args.hasArg(OPT_fsanitize_coverage_trace_pc_guard); 1094 Opts.SanitizeCoverageNoPrune = Args.hasArg(OPT_fsanitize_coverage_no_prune); 1095 Opts.SanitizeCoverageInline8bitCounters = 1096 Args.hasArg(OPT_fsanitize_coverage_inline_8bit_counters); 1097 Opts.SanitizeCoveragePCTable = Args.hasArg(OPT_fsanitize_coverage_pc_table); 1098 Opts.SanitizeCoverageStackDepth = 1099 Args.hasArg(OPT_fsanitize_coverage_stack_depth); 1100 Opts.SanitizeMemoryTrackOrigins = 1101 getLastArgIntValue(Args, OPT_fsanitize_memory_track_origins_EQ, 0, Diags); 1102 Opts.SanitizeMemoryUseAfterDtor = 1103 Args.hasFlag(OPT_fsanitize_memory_use_after_dtor, 1104 OPT_fno_sanitize_memory_use_after_dtor, 1105 false); 1106 Opts.SanitizeMinimalRuntime = Args.hasArg(OPT_fsanitize_minimal_runtime); 1107 Opts.SanitizeCfiCrossDso = Args.hasArg(OPT_fsanitize_cfi_cross_dso); 1108 Opts.SanitizeCfiICallGeneralizePointers = 1109 Args.hasArg(OPT_fsanitize_cfi_icall_generalize_pointers); 1110 Opts.SanitizeStats = Args.hasArg(OPT_fsanitize_stats); 1111 if (Arg *A = Args.getLastArg( 1112 OPT_fsanitize_address_poison_custom_array_cookie, 1113 OPT_fno_sanitize_address_poison_custom_array_cookie)) { 1114 Opts.SanitizeAddressPoisonCustomArrayCookie = 1115 A->getOption().getID() == 1116 OPT_fsanitize_address_poison_custom_array_cookie; 1117 } 1118 if (Arg *A = Args.getLastArg(OPT_fsanitize_address_use_after_scope, 1119 OPT_fno_sanitize_address_use_after_scope)) { 1120 Opts.SanitizeAddressUseAfterScope = 1121 A->getOption().getID() == OPT_fsanitize_address_use_after_scope; 1122 } 1123 Opts.SanitizeAddressGlobalsDeadStripping = 1124 Args.hasArg(OPT_fsanitize_address_globals_dead_stripping); 1125 if (Arg *A = Args.getLastArg(OPT_fsanitize_address_use_odr_indicator, 1126 OPT_fno_sanitize_address_use_odr_indicator)) { 1127 Opts.SanitizeAddressUseOdrIndicator = 1128 A->getOption().getID() == OPT_fsanitize_address_use_odr_indicator; 1129 } 1130 Opts.SSPBufferSize = 1131 getLastArgIntValue(Args, OPT_stack_protector_buffer_size, 8, Diags); 1132 Opts.StackRealignment = Args.hasArg(OPT_mstackrealign); 1133 if (Arg *A = Args.getLastArg(OPT_mstack_alignment)) { 1134 StringRef Val = A->getValue(); 1135 unsigned StackAlignment = Opts.StackAlignment; 1136 Val.getAsInteger(10, StackAlignment); 1137 Opts.StackAlignment = StackAlignment; 1138 } 1139 1140 if (Arg *A = Args.getLastArg(OPT_mstack_probe_size)) { 1141 StringRef Val = A->getValue(); 1142 unsigned StackProbeSize = Opts.StackProbeSize; 1143 Val.getAsInteger(0, StackProbeSize); 1144 Opts.StackProbeSize = StackProbeSize; 1145 } 1146 1147 Opts.NoStackArgProbe = Args.hasArg(OPT_mno_stack_arg_probe); 1148 1149 if (Arg *A = Args.getLastArg(OPT_fobjc_dispatch_method_EQ)) { 1150 StringRef Name = A->getValue(); 1151 unsigned Method = llvm::StringSwitch<unsigned>(Name) 1152 .Case("legacy", CodeGenOptions::Legacy) 1153 .Case("non-legacy", CodeGenOptions::NonLegacy) 1154 .Case("mixed", CodeGenOptions::Mixed) 1155 .Default(~0U); 1156 if (Method == ~0U) { 1157 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Name; 1158 Success = false; 1159 } else { 1160 Opts.setObjCDispatchMethod( 1161 static_cast<CodeGenOptions::ObjCDispatchMethodKind>(Method)); 1162 } 1163 } 1164 1165 1166 if (Args.hasArg(OPT_fno_objc_convert_messages_to_runtime_calls)) 1167 Opts.ObjCConvertMessagesToRuntimeCalls = 0; 1168 1169 if (Args.getLastArg(OPT_femulated_tls) || 1170 Args.getLastArg(OPT_fno_emulated_tls)) { 1171 Opts.ExplicitEmulatedTLS = true; 1172 Opts.EmulatedTLS = 1173 Args.hasFlag(OPT_femulated_tls, OPT_fno_emulated_tls, false); 1174 } 1175 1176 if (Arg *A = Args.getLastArg(OPT_ftlsmodel_EQ)) { 1177 StringRef Name = A->getValue(); 1178 unsigned Model = llvm::StringSwitch<unsigned>(Name) 1179 .Case("global-dynamic", CodeGenOptions::GeneralDynamicTLSModel) 1180 .Case("local-dynamic", CodeGenOptions::LocalDynamicTLSModel) 1181 .Case("initial-exec", CodeGenOptions::InitialExecTLSModel) 1182 .Case("local-exec", CodeGenOptions::LocalExecTLSModel) 1183 .Default(~0U); 1184 if (Model == ~0U) { 1185 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Name; 1186 Success = false; 1187 } else { 1188 Opts.setDefaultTLSModel(static_cast<CodeGenOptions::TLSModel>(Model)); 1189 } 1190 } 1191 1192 if (Arg *A = Args.getLastArg(OPT_fdenormal_fp_math_EQ)) { 1193 StringRef Val = A->getValue(); 1194 if (Val == "ieee") 1195 Opts.FPDenormalMode = "ieee"; 1196 else if (Val == "preserve-sign") 1197 Opts.FPDenormalMode = "preserve-sign"; 1198 else if (Val == "positive-zero") 1199 Opts.FPDenormalMode = "positive-zero"; 1200 else 1201 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Val; 1202 } 1203 1204 if (Arg *A = Args.getLastArg(OPT_fpcc_struct_return, OPT_freg_struct_return)) { 1205 if (A->getOption().matches(OPT_fpcc_struct_return)) { 1206 Opts.setStructReturnConvention(CodeGenOptions::SRCK_OnStack); 1207 } else { 1208 assert(A->getOption().matches(OPT_freg_struct_return)); 1209 Opts.setStructReturnConvention(CodeGenOptions::SRCK_InRegs); 1210 } 1211 } 1212 1213 Opts.DependentLibraries = Args.getAllArgValues(OPT_dependent_lib); 1214 Opts.LinkerOptions = Args.getAllArgValues(OPT_linker_option); 1215 bool NeedLocTracking = false; 1216 1217 Opts.OptRecordFile = Args.getLastArgValue(OPT_opt_record_file); 1218 if (!Opts.OptRecordFile.empty()) 1219 NeedLocTracking = true; 1220 1221 if (Arg *A = Args.getLastArg(OPT_opt_record_passes)) { 1222 Opts.OptRecordPasses = A->getValue(); 1223 NeedLocTracking = true; 1224 } 1225 1226 if (Arg *A = Args.getLastArg(OPT_Rpass_EQ)) { 1227 Opts.OptimizationRemarkPattern = 1228 GenerateOptimizationRemarkRegex(Diags, Args, A); 1229 NeedLocTracking = true; 1230 } 1231 1232 if (Arg *A = Args.getLastArg(OPT_Rpass_missed_EQ)) { 1233 Opts.OptimizationRemarkMissedPattern = 1234 GenerateOptimizationRemarkRegex(Diags, Args, A); 1235 NeedLocTracking = true; 1236 } 1237 1238 if (Arg *A = Args.getLastArg(OPT_Rpass_analysis_EQ)) { 1239 Opts.OptimizationRemarkAnalysisPattern = 1240 GenerateOptimizationRemarkRegex(Diags, Args, A); 1241 NeedLocTracking = true; 1242 } 1243 1244 Opts.DiagnosticsWithHotness = 1245 Args.hasArg(options::OPT_fdiagnostics_show_hotness); 1246 bool UsingSampleProfile = !Opts.SampleProfileFile.empty(); 1247 bool UsingProfile = UsingSampleProfile || 1248 (Opts.getProfileUse() != CodeGenOptions::ProfileNone); 1249 1250 if (Opts.DiagnosticsWithHotness && !UsingProfile && 1251 // An IR file will contain PGO as metadata 1252 IK.getLanguage() != InputKind::LLVM_IR) 1253 Diags.Report(diag::warn_drv_diagnostics_hotness_requires_pgo) 1254 << "-fdiagnostics-show-hotness"; 1255 1256 Opts.DiagnosticsHotnessThreshold = getLastArgUInt64Value( 1257 Args, options::OPT_fdiagnostics_hotness_threshold_EQ, 0); 1258 if (Opts.DiagnosticsHotnessThreshold > 0 && !UsingProfile) 1259 Diags.Report(diag::warn_drv_diagnostics_hotness_requires_pgo) 1260 << "-fdiagnostics-hotness-threshold="; 1261 1262 // If the user requested to use a sample profile for PGO, then the 1263 // backend will need to track source location information so the profile 1264 // can be incorporated into the IR. 1265 if (UsingSampleProfile) 1266 NeedLocTracking = true; 1267 1268 // If the user requested a flag that requires source locations available in 1269 // the backend, make sure that the backend tracks source location information. 1270 if (NeedLocTracking && Opts.getDebugInfo() == codegenoptions::NoDebugInfo) 1271 Opts.setDebugInfo(codegenoptions::LocTrackingOnly); 1272 1273 Opts.RewriteMapFiles = Args.getAllArgValues(OPT_frewrite_map_file); 1274 1275 // Parse -fsanitize-recover= arguments. 1276 // FIXME: Report unrecoverable sanitizers incorrectly specified here. 1277 parseSanitizerKinds("-fsanitize-recover=", 1278 Args.getAllArgValues(OPT_fsanitize_recover_EQ), Diags, 1279 Opts.SanitizeRecover); 1280 parseSanitizerKinds("-fsanitize-trap=", 1281 Args.getAllArgValues(OPT_fsanitize_trap_EQ), Diags, 1282 Opts.SanitizeTrap); 1283 1284 Opts.CudaGpuBinaryFileName = 1285 Args.getLastArgValue(OPT_fcuda_include_gpubinary); 1286 1287 Opts.Backchain = Args.hasArg(OPT_mbackchain); 1288 1289 Opts.EmitCheckPathComponentsToStrip = getLastArgIntValue( 1290 Args, OPT_fsanitize_undefined_strip_path_components_EQ, 0, Diags); 1291 1292 Opts.EmitVersionIdentMetadata = Args.hasFlag(OPT_Qy, OPT_Qn, true); 1293 1294 Opts.Addrsig = Args.hasArg(OPT_faddrsig); 1295 1296 if (Arg *A = Args.getLastArg(OPT_msign_return_address_EQ)) { 1297 StringRef SignScope = A->getValue(); 1298 1299 if (SignScope.equals_lower("none")) 1300 Opts.setSignReturnAddress(CodeGenOptions::SignReturnAddressScope::None); 1301 else if (SignScope.equals_lower("all")) 1302 Opts.setSignReturnAddress(CodeGenOptions::SignReturnAddressScope::All); 1303 else if (SignScope.equals_lower("non-leaf")) 1304 Opts.setSignReturnAddress( 1305 CodeGenOptions::SignReturnAddressScope::NonLeaf); 1306 else 1307 Diags.Report(diag::err_drv_invalid_value) 1308 << A->getAsString(Args) << SignScope; 1309 1310 if (Arg *A = Args.getLastArg(OPT_msign_return_address_key_EQ)) { 1311 StringRef SignKey = A->getValue(); 1312 if (!SignScope.empty() && !SignKey.empty()) { 1313 if (SignKey.equals_lower("a_key")) 1314 Opts.setSignReturnAddressKey( 1315 CodeGenOptions::SignReturnAddressKeyValue::AKey); 1316 else if (SignKey.equals_lower("b_key")) 1317 Opts.setSignReturnAddressKey( 1318 CodeGenOptions::SignReturnAddressKeyValue::BKey); 1319 else 1320 Diags.Report(diag::err_drv_invalid_value) 1321 << A->getAsString(Args) << SignKey; 1322 } 1323 } 1324 } 1325 1326 Opts.BranchTargetEnforcement = Args.hasArg(OPT_mbranch_target_enforce); 1327 1328 Opts.KeepStaticConsts = Args.hasArg(OPT_fkeep_static_consts); 1329 1330 Opts.SpeculativeLoadHardening = Args.hasArg(OPT_mspeculative_load_hardening); 1331 1332 Opts.DefaultFunctionAttrs = Args.getAllArgValues(OPT_default_function_attr); 1333 1334 Opts.PassPlugins = Args.getAllArgValues(OPT_fpass_plugin_EQ); 1335 1336 return Success; 1337 } 1338 1339 static void ParseDependencyOutputArgs(DependencyOutputOptions &Opts, 1340 ArgList &Args) { 1341 Opts.OutputFile = Args.getLastArgValue(OPT_dependency_file); 1342 Opts.Targets = Args.getAllArgValues(OPT_MT); 1343 Opts.IncludeSystemHeaders = Args.hasArg(OPT_sys_header_deps); 1344 Opts.IncludeModuleFiles = Args.hasArg(OPT_module_file_deps); 1345 Opts.UsePhonyTargets = Args.hasArg(OPT_MP); 1346 Opts.ShowHeaderIncludes = Args.hasArg(OPT_H); 1347 Opts.HeaderIncludeOutputFile = Args.getLastArgValue(OPT_header_include_file); 1348 Opts.AddMissingHeaderDeps = Args.hasArg(OPT_MG); 1349 if (Args.hasArg(OPT_show_includes)) { 1350 // Writing both /showIncludes and preprocessor output to stdout 1351 // would produce interleaved output, so use stderr for /showIncludes. 1352 // This behaves the same as cl.exe, when /E, /EP or /P are passed. 1353 if (Args.hasArg(options::OPT_E) || Args.hasArg(options::OPT_P)) 1354 Opts.ShowIncludesDest = ShowIncludesDestination::Stderr; 1355 else 1356 Opts.ShowIncludesDest = ShowIncludesDestination::Stdout; 1357 } else { 1358 Opts.ShowIncludesDest = ShowIncludesDestination::None; 1359 } 1360 Opts.DOTOutputFile = Args.getLastArgValue(OPT_dependency_dot); 1361 Opts.ModuleDependencyOutputDir = 1362 Args.getLastArgValue(OPT_module_dependency_dir); 1363 if (Args.hasArg(OPT_MV)) 1364 Opts.OutputFormat = DependencyOutputFormat::NMake; 1365 // Add sanitizer blacklists as extra dependencies. 1366 // They won't be discovered by the regular preprocessor, so 1367 // we let make / ninja to know about this implicit dependency. 1368 Opts.ExtraDeps = Args.getAllArgValues(OPT_fdepfile_entry); 1369 // Only the -fmodule-file=<file> form. 1370 for (const auto *A : Args.filtered(OPT_fmodule_file)) { 1371 StringRef Val = A->getValue(); 1372 if (Val.find('=') == StringRef::npos) 1373 Opts.ExtraDeps.push_back(Val); 1374 } 1375 } 1376 1377 static bool parseShowColorsArgs(const ArgList &Args, bool DefaultColor) { 1378 // Color diagnostics default to auto ("on" if terminal supports) in the driver 1379 // but default to off in cc1, needing an explicit OPT_fdiagnostics_color. 1380 // Support both clang's -f[no-]color-diagnostics and gcc's 1381 // -f[no-]diagnostics-colors[=never|always|auto]. 1382 enum { 1383 Colors_On, 1384 Colors_Off, 1385 Colors_Auto 1386 } ShowColors = DefaultColor ? Colors_Auto : Colors_Off; 1387 for (auto *A : Args) { 1388 const Option &O = A->getOption(); 1389 if (O.matches(options::OPT_fcolor_diagnostics) || 1390 O.matches(options::OPT_fdiagnostics_color)) { 1391 ShowColors = Colors_On; 1392 } else if (O.matches(options::OPT_fno_color_diagnostics) || 1393 O.matches(options::OPT_fno_diagnostics_color)) { 1394 ShowColors = Colors_Off; 1395 } else if (O.matches(options::OPT_fdiagnostics_color_EQ)) { 1396 StringRef Value(A->getValue()); 1397 if (Value == "always") 1398 ShowColors = Colors_On; 1399 else if (Value == "never") 1400 ShowColors = Colors_Off; 1401 else if (Value == "auto") 1402 ShowColors = Colors_Auto; 1403 } 1404 } 1405 return ShowColors == Colors_On || 1406 (ShowColors == Colors_Auto && 1407 llvm::sys::Process::StandardErrHasColors()); 1408 } 1409 1410 static bool checkVerifyPrefixes(const std::vector<std::string> &VerifyPrefixes, 1411 DiagnosticsEngine *Diags) { 1412 bool Success = true; 1413 for (const auto &Prefix : VerifyPrefixes) { 1414 // Every prefix must start with a letter and contain only alphanumeric 1415 // characters, hyphens, and underscores. 1416 auto BadChar = llvm::find_if(Prefix, [](char C) { 1417 return !isAlphanumeric(C) && C != '-' && C != '_'; 1418 }); 1419 if (BadChar != Prefix.end() || !isLetter(Prefix[0])) { 1420 Success = false; 1421 if (Diags) { 1422 Diags->Report(diag::err_drv_invalid_value) << "-verify=" << Prefix; 1423 Diags->Report(diag::note_drv_verify_prefix_spelling); 1424 } 1425 } 1426 } 1427 return Success; 1428 } 1429 1430 bool clang::ParseDiagnosticArgs(DiagnosticOptions &Opts, ArgList &Args, 1431 DiagnosticsEngine *Diags, 1432 bool DefaultDiagColor, bool DefaultShowOpt) { 1433 bool Success = true; 1434 1435 Opts.DiagnosticLogFile = Args.getLastArgValue(OPT_diagnostic_log_file); 1436 if (Arg *A = 1437 Args.getLastArg(OPT_diagnostic_serialized_file, OPT__serialize_diags)) 1438 Opts.DiagnosticSerializationFile = A->getValue(); 1439 Opts.IgnoreWarnings = Args.hasArg(OPT_w); 1440 Opts.NoRewriteMacros = Args.hasArg(OPT_Wno_rewrite_macros); 1441 Opts.Pedantic = Args.hasArg(OPT_pedantic); 1442 Opts.PedanticErrors = Args.hasArg(OPT_pedantic_errors); 1443 Opts.ShowCarets = !Args.hasArg(OPT_fno_caret_diagnostics); 1444 Opts.ShowColors = parseShowColorsArgs(Args, DefaultDiagColor); 1445 Opts.ShowColumn = Args.hasFlag(OPT_fshow_column, 1446 OPT_fno_show_column, 1447 /*Default=*/true); 1448 Opts.ShowFixits = !Args.hasArg(OPT_fno_diagnostics_fixit_info); 1449 Opts.ShowLocation = !Args.hasArg(OPT_fno_show_source_location); 1450 Opts.AbsolutePath = Args.hasArg(OPT_fdiagnostics_absolute_paths); 1451 Opts.ShowOptionNames = 1452 Args.hasFlag(OPT_fdiagnostics_show_option, 1453 OPT_fno_diagnostics_show_option, DefaultShowOpt); 1454 1455 llvm::sys::Process::UseANSIEscapeCodes(Args.hasArg(OPT_fansi_escape_codes)); 1456 1457 // Default behavior is to not to show note include stacks. 1458 Opts.ShowNoteIncludeStack = false; 1459 if (Arg *A = Args.getLastArg(OPT_fdiagnostics_show_note_include_stack, 1460 OPT_fno_diagnostics_show_note_include_stack)) 1461 if (A->getOption().matches(OPT_fdiagnostics_show_note_include_stack)) 1462 Opts.ShowNoteIncludeStack = true; 1463 1464 StringRef ShowOverloads = 1465 Args.getLastArgValue(OPT_fshow_overloads_EQ, "all"); 1466 if (ShowOverloads == "best") 1467 Opts.setShowOverloads(Ovl_Best); 1468 else if (ShowOverloads == "all") 1469 Opts.setShowOverloads(Ovl_All); 1470 else { 1471 Success = false; 1472 if (Diags) 1473 Diags->Report(diag::err_drv_invalid_value) 1474 << Args.getLastArg(OPT_fshow_overloads_EQ)->getAsString(Args) 1475 << ShowOverloads; 1476 } 1477 1478 StringRef ShowCategory = 1479 Args.getLastArgValue(OPT_fdiagnostics_show_category, "none"); 1480 if (ShowCategory == "none") 1481 Opts.ShowCategories = 0; 1482 else if (ShowCategory == "id") 1483 Opts.ShowCategories = 1; 1484 else if (ShowCategory == "name") 1485 Opts.ShowCategories = 2; 1486 else { 1487 Success = false; 1488 if (Diags) 1489 Diags->Report(diag::err_drv_invalid_value) 1490 << Args.getLastArg(OPT_fdiagnostics_show_category)->getAsString(Args) 1491 << ShowCategory; 1492 } 1493 1494 StringRef Format = 1495 Args.getLastArgValue(OPT_fdiagnostics_format, "clang"); 1496 if (Format == "clang") 1497 Opts.setFormat(DiagnosticOptions::Clang); 1498 else if (Format == "msvc") 1499 Opts.setFormat(DiagnosticOptions::MSVC); 1500 else if (Format == "msvc-fallback") { 1501 Opts.setFormat(DiagnosticOptions::MSVC); 1502 Opts.CLFallbackMode = true; 1503 } else if (Format == "vi") 1504 Opts.setFormat(DiagnosticOptions::Vi); 1505 else { 1506 Success = false; 1507 if (Diags) 1508 Diags->Report(diag::err_drv_invalid_value) 1509 << Args.getLastArg(OPT_fdiagnostics_format)->getAsString(Args) 1510 << Format; 1511 } 1512 1513 Opts.ShowSourceRanges = Args.hasArg(OPT_fdiagnostics_print_source_range_info); 1514 Opts.ShowParseableFixits = Args.hasArg(OPT_fdiagnostics_parseable_fixits); 1515 Opts.ShowPresumedLoc = !Args.hasArg(OPT_fno_diagnostics_use_presumed_location); 1516 Opts.VerifyDiagnostics = Args.hasArg(OPT_verify) || Args.hasArg(OPT_verify_EQ); 1517 Opts.VerifyPrefixes = Args.getAllArgValues(OPT_verify_EQ); 1518 if (Args.hasArg(OPT_verify)) 1519 Opts.VerifyPrefixes.push_back("expected"); 1520 // Keep VerifyPrefixes in its original order for the sake of diagnostics, and 1521 // then sort it to prepare for fast lookup using std::binary_search. 1522 if (!checkVerifyPrefixes(Opts.VerifyPrefixes, Diags)) { 1523 Opts.VerifyDiagnostics = false; 1524 Success = false; 1525 } 1526 else 1527 llvm::sort(Opts.VerifyPrefixes); 1528 DiagnosticLevelMask DiagMask = DiagnosticLevelMask::None; 1529 Success &= parseDiagnosticLevelMask("-verify-ignore-unexpected=", 1530 Args.getAllArgValues(OPT_verify_ignore_unexpected_EQ), 1531 Diags, DiagMask); 1532 if (Args.hasArg(OPT_verify_ignore_unexpected)) 1533 DiagMask = DiagnosticLevelMask::All; 1534 Opts.setVerifyIgnoreUnexpected(DiagMask); 1535 Opts.ElideType = !Args.hasArg(OPT_fno_elide_type); 1536 Opts.ShowTemplateTree = Args.hasArg(OPT_fdiagnostics_show_template_tree); 1537 Opts.ErrorLimit = getLastArgIntValue(Args, OPT_ferror_limit, 0, Diags); 1538 Opts.MacroBacktraceLimit = 1539 getLastArgIntValue(Args, OPT_fmacro_backtrace_limit, 1540 DiagnosticOptions::DefaultMacroBacktraceLimit, Diags); 1541 Opts.TemplateBacktraceLimit = getLastArgIntValue( 1542 Args, OPT_ftemplate_backtrace_limit, 1543 DiagnosticOptions::DefaultTemplateBacktraceLimit, Diags); 1544 Opts.ConstexprBacktraceLimit = getLastArgIntValue( 1545 Args, OPT_fconstexpr_backtrace_limit, 1546 DiagnosticOptions::DefaultConstexprBacktraceLimit, Diags); 1547 Opts.SpellCheckingLimit = getLastArgIntValue( 1548 Args, OPT_fspell_checking_limit, 1549 DiagnosticOptions::DefaultSpellCheckingLimit, Diags); 1550 Opts.SnippetLineLimit = getLastArgIntValue( 1551 Args, OPT_fcaret_diagnostics_max_lines, 1552 DiagnosticOptions::DefaultSnippetLineLimit, Diags); 1553 Opts.TabStop = getLastArgIntValue(Args, OPT_ftabstop, 1554 DiagnosticOptions::DefaultTabStop, Diags); 1555 if (Opts.TabStop == 0 || Opts.TabStop > DiagnosticOptions::MaxTabStop) { 1556 Opts.TabStop = DiagnosticOptions::DefaultTabStop; 1557 if (Diags) 1558 Diags->Report(diag::warn_ignoring_ftabstop_value) 1559 << Opts.TabStop << DiagnosticOptions::DefaultTabStop; 1560 } 1561 Opts.MessageLength = getLastArgIntValue(Args, OPT_fmessage_length, 0, Diags); 1562 addDiagnosticArgs(Args, OPT_W_Group, OPT_W_value_Group, Opts.Warnings); 1563 addDiagnosticArgs(Args, OPT_R_Group, OPT_R_value_Group, Opts.Remarks); 1564 1565 return Success; 1566 } 1567 1568 static void ParseFileSystemArgs(FileSystemOptions &Opts, ArgList &Args) { 1569 Opts.WorkingDir = Args.getLastArgValue(OPT_working_directory); 1570 } 1571 1572 /// Parse the argument to the -ftest-module-file-extension 1573 /// command-line argument. 1574 /// 1575 /// \returns true on error, false on success. 1576 static bool parseTestModuleFileExtensionArg(StringRef Arg, 1577 std::string &BlockName, 1578 unsigned &MajorVersion, 1579 unsigned &MinorVersion, 1580 bool &Hashed, 1581 std::string &UserInfo) { 1582 SmallVector<StringRef, 5> Args; 1583 Arg.split(Args, ':', 5); 1584 if (Args.size() < 5) 1585 return true; 1586 1587 BlockName = Args[0]; 1588 if (Args[1].getAsInteger(10, MajorVersion)) return true; 1589 if (Args[2].getAsInteger(10, MinorVersion)) return true; 1590 if (Args[3].getAsInteger(2, Hashed)) return true; 1591 if (Args.size() > 4) 1592 UserInfo = Args[4]; 1593 return false; 1594 } 1595 1596 static InputKind ParseFrontendArgs(FrontendOptions &Opts, ArgList &Args, 1597 DiagnosticsEngine &Diags, 1598 bool &IsHeaderFile) { 1599 Opts.ProgramAction = frontend::ParseSyntaxOnly; 1600 if (const Arg *A = Args.getLastArg(OPT_Action_Group)) { 1601 switch (A->getOption().getID()) { 1602 default: 1603 llvm_unreachable("Invalid option in group!"); 1604 case OPT_ast_list: 1605 Opts.ProgramAction = frontend::ASTDeclList; break; 1606 case OPT_ast_dump_all_EQ: 1607 case OPT_ast_dump_EQ: { 1608 unsigned Val = llvm::StringSwitch<unsigned>(A->getValue()) 1609 .CaseLower("default", ADOF_Default) 1610 .CaseLower("json", ADOF_JSON) 1611 .Default(std::numeric_limits<unsigned>::max()); 1612 1613 if (Val != std::numeric_limits<unsigned>::max()) 1614 Opts.ASTDumpFormat = static_cast<ASTDumpOutputFormat>(Val); 1615 else { 1616 Diags.Report(diag::err_drv_invalid_value) 1617 << A->getAsString(Args) << A->getValue(); 1618 Opts.ASTDumpFormat = ADOF_Default; 1619 } 1620 LLVM_FALLTHROUGH; 1621 } 1622 case OPT_ast_dump: 1623 case OPT_ast_dump_all: 1624 case OPT_ast_dump_lookups: 1625 Opts.ProgramAction = frontend::ASTDump; break; 1626 case OPT_ast_print: 1627 Opts.ProgramAction = frontend::ASTPrint; break; 1628 case OPT_ast_view: 1629 Opts.ProgramAction = frontend::ASTView; break; 1630 case OPT_compiler_options_dump: 1631 Opts.ProgramAction = frontend::DumpCompilerOptions; break; 1632 case OPT_dump_raw_tokens: 1633 Opts.ProgramAction = frontend::DumpRawTokens; break; 1634 case OPT_dump_tokens: 1635 Opts.ProgramAction = frontend::DumpTokens; break; 1636 case OPT_S: 1637 Opts.ProgramAction = frontend::EmitAssembly; break; 1638 case OPT_emit_llvm_bc: 1639 Opts.ProgramAction = frontend::EmitBC; break; 1640 case OPT_emit_html: 1641 Opts.ProgramAction = frontend::EmitHTML; break; 1642 case OPT_emit_llvm: 1643 Opts.ProgramAction = frontend::EmitLLVM; break; 1644 case OPT_emit_llvm_only: 1645 Opts.ProgramAction = frontend::EmitLLVMOnly; break; 1646 case OPT_emit_codegen_only: 1647 Opts.ProgramAction = frontend::EmitCodeGenOnly; break; 1648 case OPT_emit_obj: 1649 Opts.ProgramAction = frontend::EmitObj; break; 1650 case OPT_fixit_EQ: 1651 Opts.FixItSuffix = A->getValue(); 1652 LLVM_FALLTHROUGH; 1653 case OPT_fixit: 1654 Opts.ProgramAction = frontend::FixIt; break; 1655 case OPT_emit_module: 1656 Opts.ProgramAction = frontend::GenerateModule; break; 1657 case OPT_emit_module_interface: 1658 Opts.ProgramAction = frontend::GenerateModuleInterface; break; 1659 case OPT_emit_header_module: 1660 Opts.ProgramAction = frontend::GenerateHeaderModule; break; 1661 case OPT_emit_pch: 1662 Opts.ProgramAction = frontend::GeneratePCH; break; 1663 case OPT_init_only: 1664 Opts.ProgramAction = frontend::InitOnly; break; 1665 case OPT_fsyntax_only: 1666 Opts.ProgramAction = frontend::ParseSyntaxOnly; break; 1667 case OPT_module_file_info: 1668 Opts.ProgramAction = frontend::ModuleFileInfo; break; 1669 case OPT_verify_pch: 1670 Opts.ProgramAction = frontend::VerifyPCH; break; 1671 case OPT_print_preamble: 1672 Opts.ProgramAction = frontend::PrintPreamble; break; 1673 case OPT_E: 1674 Opts.ProgramAction = frontend::PrintPreprocessedInput; break; 1675 case OPT_templight_dump: 1676 Opts.ProgramAction = frontend::TemplightDump; break; 1677 case OPT_rewrite_macros: 1678 Opts.ProgramAction = frontend::RewriteMacros; break; 1679 case OPT_rewrite_objc: 1680 Opts.ProgramAction = frontend::RewriteObjC; break; 1681 case OPT_rewrite_test: 1682 Opts.ProgramAction = frontend::RewriteTest; break; 1683 case OPT_analyze: 1684 Opts.ProgramAction = frontend::RunAnalysis; break; 1685 case OPT_migrate: 1686 Opts.ProgramAction = frontend::MigrateSource; break; 1687 case OPT_Eonly: 1688 Opts.ProgramAction = frontend::RunPreprocessorOnly; break; 1689 } 1690 } 1691 1692 if (const Arg* A = Args.getLastArg(OPT_plugin)) { 1693 Opts.Plugins.emplace_back(A->getValue(0)); 1694 Opts.ProgramAction = frontend::PluginAction; 1695 Opts.ActionName = A->getValue(); 1696 } 1697 Opts.AddPluginActions = Args.getAllArgValues(OPT_add_plugin); 1698 for (const auto *AA : Args.filtered(OPT_plugin_arg)) 1699 Opts.PluginArgs[AA->getValue(0)].emplace_back(AA->getValue(1)); 1700 1701 for (const std::string &Arg : 1702 Args.getAllArgValues(OPT_ftest_module_file_extension_EQ)) { 1703 std::string BlockName; 1704 unsigned MajorVersion; 1705 unsigned MinorVersion; 1706 bool Hashed; 1707 std::string UserInfo; 1708 if (parseTestModuleFileExtensionArg(Arg, BlockName, MajorVersion, 1709 MinorVersion, Hashed, UserInfo)) { 1710 Diags.Report(diag::err_test_module_file_extension_format) << Arg; 1711 1712 continue; 1713 } 1714 1715 // Add the testing module file extension. 1716 Opts.ModuleFileExtensions.push_back( 1717 std::make_shared<TestModuleFileExtension>( 1718 BlockName, MajorVersion, MinorVersion, Hashed, UserInfo)); 1719 } 1720 1721 if (const Arg *A = Args.getLastArg(OPT_code_completion_at)) { 1722 Opts.CodeCompletionAt = 1723 ParsedSourceLocation::FromString(A->getValue()); 1724 if (Opts.CodeCompletionAt.FileName.empty()) 1725 Diags.Report(diag::err_drv_invalid_value) 1726 << A->getAsString(Args) << A->getValue(); 1727 } 1728 Opts.DisableFree = Args.hasArg(OPT_disable_free); 1729 1730 Opts.OutputFile = Args.getLastArgValue(OPT_o); 1731 Opts.Plugins = Args.getAllArgValues(OPT_load); 1732 Opts.RelocatablePCH = Args.hasArg(OPT_relocatable_pch); 1733 Opts.ShowHelp = Args.hasArg(OPT_help); 1734 Opts.ShowStats = Args.hasArg(OPT_print_stats); 1735 Opts.ShowTimers = Args.hasArg(OPT_ftime_report); 1736 Opts.TimeTrace = Args.hasArg(OPT_ftime_trace); 1737 Opts.ShowVersion = Args.hasArg(OPT_version); 1738 Opts.ASTMergeFiles = Args.getAllArgValues(OPT_ast_merge); 1739 Opts.LLVMArgs = Args.getAllArgValues(OPT_mllvm); 1740 Opts.FixWhatYouCan = Args.hasArg(OPT_fix_what_you_can); 1741 Opts.FixOnlyWarnings = Args.hasArg(OPT_fix_only_warnings); 1742 Opts.FixAndRecompile = Args.hasArg(OPT_fixit_recompile); 1743 Opts.FixToTemporaries = Args.hasArg(OPT_fixit_to_temp); 1744 Opts.ASTDumpDecls = Args.hasArg(OPT_ast_dump, OPT_ast_dump_EQ); 1745 Opts.ASTDumpAll = Args.hasArg(OPT_ast_dump_all, OPT_ast_dump_all_EQ); 1746 Opts.ASTDumpFilter = Args.getLastArgValue(OPT_ast_dump_filter); 1747 Opts.ASTDumpLookups = Args.hasArg(OPT_ast_dump_lookups); 1748 Opts.UseGlobalModuleIndex = !Args.hasArg(OPT_fno_modules_global_index); 1749 Opts.GenerateGlobalModuleIndex = Opts.UseGlobalModuleIndex; 1750 Opts.ModuleMapFiles = Args.getAllArgValues(OPT_fmodule_map_file); 1751 // Only the -fmodule-file=<file> form. 1752 for (const auto *A : Args.filtered(OPT_fmodule_file)) { 1753 StringRef Val = A->getValue(); 1754 if (Val.find('=') == StringRef::npos) 1755 Opts.ModuleFiles.push_back(Val); 1756 } 1757 Opts.ModulesEmbedFiles = Args.getAllArgValues(OPT_fmodules_embed_file_EQ); 1758 Opts.ModulesEmbedAllFiles = Args.hasArg(OPT_fmodules_embed_all_files); 1759 Opts.IncludeTimestamps = !Args.hasArg(OPT_fno_pch_timestamp); 1760 1761 Opts.CodeCompleteOpts.IncludeMacros 1762 = Args.hasArg(OPT_code_completion_macros); 1763 Opts.CodeCompleteOpts.IncludeCodePatterns 1764 = Args.hasArg(OPT_code_completion_patterns); 1765 Opts.CodeCompleteOpts.IncludeGlobals 1766 = !Args.hasArg(OPT_no_code_completion_globals); 1767 Opts.CodeCompleteOpts.IncludeNamespaceLevelDecls 1768 = !Args.hasArg(OPT_no_code_completion_ns_level_decls); 1769 Opts.CodeCompleteOpts.IncludeBriefComments 1770 = Args.hasArg(OPT_code_completion_brief_comments); 1771 Opts.CodeCompleteOpts.IncludeFixIts 1772 = Args.hasArg(OPT_code_completion_with_fixits); 1773 1774 Opts.OverrideRecordLayoutsFile 1775 = Args.getLastArgValue(OPT_foverride_record_layout_EQ); 1776 Opts.AuxTriple = Args.getLastArgValue(OPT_aux_triple); 1777 Opts.StatsFile = Args.getLastArgValue(OPT_stats_file); 1778 1779 if (const Arg *A = Args.getLastArg(OPT_arcmt_check, 1780 OPT_arcmt_modify, 1781 OPT_arcmt_migrate)) { 1782 switch (A->getOption().getID()) { 1783 default: 1784 llvm_unreachable("missed a case"); 1785 case OPT_arcmt_check: 1786 Opts.ARCMTAction = FrontendOptions::ARCMT_Check; 1787 break; 1788 case OPT_arcmt_modify: 1789 Opts.ARCMTAction = FrontendOptions::ARCMT_Modify; 1790 break; 1791 case OPT_arcmt_migrate: 1792 Opts.ARCMTAction = FrontendOptions::ARCMT_Migrate; 1793 break; 1794 } 1795 } 1796 Opts.MTMigrateDir = Args.getLastArgValue(OPT_mt_migrate_directory); 1797 Opts.ARCMTMigrateReportOut 1798 = Args.getLastArgValue(OPT_arcmt_migrate_report_output); 1799 Opts.ARCMTMigrateEmitARCErrors 1800 = Args.hasArg(OPT_arcmt_migrate_emit_arc_errors); 1801 1802 if (Args.hasArg(OPT_objcmt_migrate_literals)) 1803 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_Literals; 1804 if (Args.hasArg(OPT_objcmt_migrate_subscripting)) 1805 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_Subscripting; 1806 if (Args.hasArg(OPT_objcmt_migrate_property_dot_syntax)) 1807 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_PropertyDotSyntax; 1808 if (Args.hasArg(OPT_objcmt_migrate_property)) 1809 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_Property; 1810 if (Args.hasArg(OPT_objcmt_migrate_readonly_property)) 1811 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_ReadonlyProperty; 1812 if (Args.hasArg(OPT_objcmt_migrate_readwrite_property)) 1813 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_ReadwriteProperty; 1814 if (Args.hasArg(OPT_objcmt_migrate_annotation)) 1815 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_Annotation; 1816 if (Args.hasArg(OPT_objcmt_returns_innerpointer_property)) 1817 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_ReturnsInnerPointerProperty; 1818 if (Args.hasArg(OPT_objcmt_migrate_instancetype)) 1819 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_Instancetype; 1820 if (Args.hasArg(OPT_objcmt_migrate_nsmacros)) 1821 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_NsMacros; 1822 if (Args.hasArg(OPT_objcmt_migrate_protocol_conformance)) 1823 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_ProtocolConformance; 1824 if (Args.hasArg(OPT_objcmt_atomic_property)) 1825 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_AtomicProperty; 1826 if (Args.hasArg(OPT_objcmt_ns_nonatomic_iosonly)) 1827 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_NsAtomicIOSOnlyProperty; 1828 if (Args.hasArg(OPT_objcmt_migrate_designated_init)) 1829 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_DesignatedInitializer; 1830 if (Args.hasArg(OPT_objcmt_migrate_all)) 1831 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_MigrateDecls; 1832 1833 Opts.ObjCMTWhiteListPath = Args.getLastArgValue(OPT_objcmt_whitelist_dir_path); 1834 1835 if (Opts.ARCMTAction != FrontendOptions::ARCMT_None && 1836 Opts.ObjCMTAction != FrontendOptions::ObjCMT_None) { 1837 Diags.Report(diag::err_drv_argument_not_allowed_with) 1838 << "ARC migration" << "ObjC migration"; 1839 } 1840 1841 InputKind DashX(InputKind::Unknown); 1842 if (const Arg *A = Args.getLastArg(OPT_x)) { 1843 StringRef XValue = A->getValue(); 1844 1845 // Parse suffixes: '<lang>(-header|[-module-map][-cpp-output])'. 1846 // FIXME: Supporting '<lang>-header-cpp-output' would be useful. 1847 bool Preprocessed = XValue.consume_back("-cpp-output"); 1848 bool ModuleMap = XValue.consume_back("-module-map"); 1849 IsHeaderFile = 1850 !Preprocessed && !ModuleMap && XValue.consume_back("-header"); 1851 1852 // Principal languages. 1853 DashX = llvm::StringSwitch<InputKind>(XValue) 1854 .Case("c", InputKind::C) 1855 .Case("cl", InputKind::OpenCL) 1856 .Case("cuda", InputKind::CUDA) 1857 .Case("hip", InputKind::HIP) 1858 .Case("c++", InputKind::CXX) 1859 .Case("objective-c", InputKind::ObjC) 1860 .Case("objective-c++", InputKind::ObjCXX) 1861 .Case("renderscript", InputKind::RenderScript) 1862 .Default(InputKind::Unknown); 1863 1864 // "objc[++]-cpp-output" is an acceptable synonym for 1865 // "objective-c[++]-cpp-output". 1866 if (DashX.isUnknown() && Preprocessed && !IsHeaderFile && !ModuleMap) 1867 DashX = llvm::StringSwitch<InputKind>(XValue) 1868 .Case("objc", InputKind::ObjC) 1869 .Case("objc++", InputKind::ObjCXX) 1870 .Default(InputKind::Unknown); 1871 1872 // Some special cases cannot be combined with suffixes. 1873 if (DashX.isUnknown() && !Preprocessed && !ModuleMap && !IsHeaderFile) 1874 DashX = llvm::StringSwitch<InputKind>(XValue) 1875 .Case("cpp-output", InputKind(InputKind::C).getPreprocessed()) 1876 .Case("assembler-with-cpp", InputKind::Asm) 1877 .Cases("ast", "pcm", 1878 InputKind(InputKind::Unknown, InputKind::Precompiled)) 1879 .Case("ir", InputKind::LLVM_IR) 1880 .Default(InputKind::Unknown); 1881 1882 if (DashX.isUnknown()) 1883 Diags.Report(diag::err_drv_invalid_value) 1884 << A->getAsString(Args) << A->getValue(); 1885 1886 if (Preprocessed) 1887 DashX = DashX.getPreprocessed(); 1888 if (ModuleMap) 1889 DashX = DashX.withFormat(InputKind::ModuleMap); 1890 } 1891 1892 // '-' is the default input if none is given. 1893 std::vector<std::string> Inputs = Args.getAllArgValues(OPT_INPUT); 1894 Opts.Inputs.clear(); 1895 if (Inputs.empty()) 1896 Inputs.push_back("-"); 1897 for (unsigned i = 0, e = Inputs.size(); i != e; ++i) { 1898 InputKind IK = DashX; 1899 if (IK.isUnknown()) { 1900 IK = FrontendOptions::getInputKindForExtension( 1901 StringRef(Inputs[i]).rsplit('.').second); 1902 // FIXME: Warn on this? 1903 if (IK.isUnknown()) 1904 IK = InputKind::C; 1905 // FIXME: Remove this hack. 1906 if (i == 0) 1907 DashX = IK; 1908 } 1909 1910 // The -emit-module action implicitly takes a module map. 1911 if (Opts.ProgramAction == frontend::GenerateModule && 1912 IK.getFormat() == InputKind::Source) 1913 IK = IK.withFormat(InputKind::ModuleMap); 1914 1915 Opts.Inputs.emplace_back(std::move(Inputs[i]), IK); 1916 } 1917 1918 return DashX; 1919 } 1920 1921 std::string CompilerInvocation::GetResourcesPath(const char *Argv0, 1922 void *MainAddr) { 1923 std::string ClangExecutable = 1924 llvm::sys::fs::getMainExecutable(Argv0, MainAddr); 1925 return Driver::GetResourcesPath(ClangExecutable, CLANG_RESOURCE_DIR); 1926 } 1927 1928 static void ParseHeaderSearchArgs(HeaderSearchOptions &Opts, ArgList &Args, 1929 const std::string &WorkingDir) { 1930 Opts.Sysroot = Args.getLastArgValue(OPT_isysroot, "/"); 1931 Opts.Verbose = Args.hasArg(OPT_v); 1932 Opts.UseBuiltinIncludes = !Args.hasArg(OPT_nobuiltininc); 1933 Opts.UseStandardSystemIncludes = !Args.hasArg(OPT_nostdsysteminc); 1934 Opts.UseStandardCXXIncludes = !Args.hasArg(OPT_nostdincxx); 1935 if (const Arg *A = Args.getLastArg(OPT_stdlib_EQ)) 1936 Opts.UseLibcxx = (strcmp(A->getValue(), "libc++") == 0); 1937 Opts.ResourceDir = Args.getLastArgValue(OPT_resource_dir); 1938 1939 // Canonicalize -fmodules-cache-path before storing it. 1940 SmallString<128> P(Args.getLastArgValue(OPT_fmodules_cache_path)); 1941 if (!(P.empty() || llvm::sys::path::is_absolute(P))) { 1942 if (WorkingDir.empty()) 1943 llvm::sys::fs::make_absolute(P); 1944 else 1945 llvm::sys::fs::make_absolute(WorkingDir, P); 1946 } 1947 llvm::sys::path::remove_dots(P); 1948 Opts.ModuleCachePath = P.str(); 1949 1950 Opts.ModuleUserBuildPath = Args.getLastArgValue(OPT_fmodules_user_build_path); 1951 // Only the -fmodule-file=<name>=<file> form. 1952 for (const auto *A : Args.filtered(OPT_fmodule_file)) { 1953 StringRef Val = A->getValue(); 1954 if (Val.find('=') != StringRef::npos) 1955 Opts.PrebuiltModuleFiles.insert(Val.split('=')); 1956 } 1957 for (const auto *A : Args.filtered(OPT_fprebuilt_module_path)) 1958 Opts.AddPrebuiltModulePath(A->getValue()); 1959 Opts.DisableModuleHash = Args.hasArg(OPT_fdisable_module_hash); 1960 Opts.ModulesHashContent = Args.hasArg(OPT_fmodules_hash_content); 1961 Opts.ModulesValidateDiagnosticOptions = 1962 !Args.hasArg(OPT_fmodules_disable_diagnostic_validation); 1963 Opts.ImplicitModuleMaps = Args.hasArg(OPT_fimplicit_module_maps); 1964 Opts.ModuleMapFileHomeIsCwd = Args.hasArg(OPT_fmodule_map_file_home_is_cwd); 1965 Opts.ModuleCachePruneInterval = 1966 getLastArgIntValue(Args, OPT_fmodules_prune_interval, 7 * 24 * 60 * 60); 1967 Opts.ModuleCachePruneAfter = 1968 getLastArgIntValue(Args, OPT_fmodules_prune_after, 31 * 24 * 60 * 60); 1969 Opts.ModulesValidateOncePerBuildSession = 1970 Args.hasArg(OPT_fmodules_validate_once_per_build_session); 1971 Opts.BuildSessionTimestamp = 1972 getLastArgUInt64Value(Args, OPT_fbuild_session_timestamp, 0); 1973 Opts.ModulesValidateSystemHeaders = 1974 Args.hasArg(OPT_fmodules_validate_system_headers); 1975 if (const Arg *A = Args.getLastArg(OPT_fmodule_format_EQ)) 1976 Opts.ModuleFormat = A->getValue(); 1977 1978 for (const auto *A : Args.filtered(OPT_fmodules_ignore_macro)) { 1979 StringRef MacroDef = A->getValue(); 1980 Opts.ModulesIgnoreMacros.insert( 1981 llvm::CachedHashString(MacroDef.split('=').first)); 1982 } 1983 1984 // Add -I..., -F..., and -index-header-map options in order. 1985 bool IsIndexHeaderMap = false; 1986 bool IsSysrootSpecified = 1987 Args.hasArg(OPT__sysroot_EQ) || Args.hasArg(OPT_isysroot); 1988 for (const auto *A : Args.filtered(OPT_I, OPT_F, OPT_index_header_map)) { 1989 if (A->getOption().matches(OPT_index_header_map)) { 1990 // -index-header-map applies to the next -I or -F. 1991 IsIndexHeaderMap = true; 1992 continue; 1993 } 1994 1995 frontend::IncludeDirGroup Group = 1996 IsIndexHeaderMap ? frontend::IndexHeaderMap : frontend::Angled; 1997 1998 bool IsFramework = A->getOption().matches(OPT_F); 1999 std::string Path = A->getValue(); 2000 2001 if (IsSysrootSpecified && !IsFramework && A->getValue()[0] == '=') { 2002 SmallString<32> Buffer; 2003 llvm::sys::path::append(Buffer, Opts.Sysroot, 2004 llvm::StringRef(A->getValue()).substr(1)); 2005 Path = Buffer.str(); 2006 } 2007 2008 Opts.AddPath(Path, Group, IsFramework, 2009 /*IgnoreSysroot*/ true); 2010 IsIndexHeaderMap = false; 2011 } 2012 2013 // Add -iprefix/-iwithprefix/-iwithprefixbefore options. 2014 StringRef Prefix = ""; // FIXME: This isn't the correct default prefix. 2015 for (const auto *A : 2016 Args.filtered(OPT_iprefix, OPT_iwithprefix, OPT_iwithprefixbefore)) { 2017 if (A->getOption().matches(OPT_iprefix)) 2018 Prefix = A->getValue(); 2019 else if (A->getOption().matches(OPT_iwithprefix)) 2020 Opts.AddPath(Prefix.str() + A->getValue(), frontend::After, false, true); 2021 else 2022 Opts.AddPath(Prefix.str() + A->getValue(), frontend::Angled, false, true); 2023 } 2024 2025 for (const auto *A : Args.filtered(OPT_idirafter)) 2026 Opts.AddPath(A->getValue(), frontend::After, false, true); 2027 for (const auto *A : Args.filtered(OPT_iquote)) 2028 Opts.AddPath(A->getValue(), frontend::Quoted, false, true); 2029 for (const auto *A : Args.filtered(OPT_isystem, OPT_iwithsysroot)) 2030 Opts.AddPath(A->getValue(), frontend::System, false, 2031 !A->getOption().matches(OPT_iwithsysroot)); 2032 for (const auto *A : Args.filtered(OPT_iframework)) 2033 Opts.AddPath(A->getValue(), frontend::System, true, true); 2034 for (const auto *A : Args.filtered(OPT_iframeworkwithsysroot)) 2035 Opts.AddPath(A->getValue(), frontend::System, /*IsFramework=*/true, 2036 /*IgnoreSysRoot=*/false); 2037 2038 // Add the paths for the various language specific isystem flags. 2039 for (const auto *A : Args.filtered(OPT_c_isystem)) 2040 Opts.AddPath(A->getValue(), frontend::CSystem, false, true); 2041 for (const auto *A : Args.filtered(OPT_cxx_isystem)) 2042 Opts.AddPath(A->getValue(), frontend::CXXSystem, false, true); 2043 for (const auto *A : Args.filtered(OPT_objc_isystem)) 2044 Opts.AddPath(A->getValue(), frontend::ObjCSystem, false,true); 2045 for (const auto *A : Args.filtered(OPT_objcxx_isystem)) 2046 Opts.AddPath(A->getValue(), frontend::ObjCXXSystem, false, true); 2047 2048 // Add the internal paths from a driver that detects standard include paths. 2049 for (const auto *A : 2050 Args.filtered(OPT_internal_isystem, OPT_internal_externc_isystem)) { 2051 frontend::IncludeDirGroup Group = frontend::System; 2052 if (A->getOption().matches(OPT_internal_externc_isystem)) 2053 Group = frontend::ExternCSystem; 2054 Opts.AddPath(A->getValue(), Group, false, true); 2055 } 2056 2057 // Add the path prefixes which are implicitly treated as being system headers. 2058 for (const auto *A : 2059 Args.filtered(OPT_system_header_prefix, OPT_no_system_header_prefix)) 2060 Opts.AddSystemHeaderPrefix( 2061 A->getValue(), A->getOption().matches(OPT_system_header_prefix)); 2062 2063 for (const auto *A : Args.filtered(OPT_ivfsoverlay)) 2064 Opts.AddVFSOverlayFile(A->getValue()); 2065 } 2066 2067 void CompilerInvocation::setLangDefaults(LangOptions &Opts, InputKind IK, 2068 const llvm::Triple &T, 2069 PreprocessorOptions &PPOpts, 2070 LangStandard::Kind LangStd) { 2071 // Set some properties which depend solely on the input kind; it would be nice 2072 // to move these to the language standard, and have the driver resolve the 2073 // input kind + language standard. 2074 // 2075 // FIXME: Perhaps a better model would be for a single source file to have 2076 // multiple language standards (C / C++ std, ObjC std, OpenCL std, OpenMP std) 2077 // simultaneously active? 2078 if (IK.getLanguage() == InputKind::Asm) { 2079 Opts.AsmPreprocessor = 1; 2080 } else if (IK.isObjectiveC()) { 2081 Opts.ObjC = 1; 2082 } 2083 2084 if (LangStd == LangStandard::lang_unspecified) { 2085 // Based on the base language, pick one. 2086 switch (IK.getLanguage()) { 2087 case InputKind::Unknown: 2088 case InputKind::LLVM_IR: 2089 llvm_unreachable("Invalid input kind!"); 2090 case InputKind::OpenCL: 2091 LangStd = LangStandard::lang_opencl10; 2092 break; 2093 case InputKind::CUDA: 2094 LangStd = LangStandard::lang_cuda; 2095 break; 2096 case InputKind::Asm: 2097 case InputKind::C: 2098 #if defined(CLANG_DEFAULT_STD_C) 2099 LangStd = CLANG_DEFAULT_STD_C; 2100 #else 2101 // The PS4 uses C99 as the default C standard. 2102 if (T.isPS4()) 2103 LangStd = LangStandard::lang_gnu99; 2104 else 2105 LangStd = LangStandard::lang_gnu11; 2106 #endif 2107 break; 2108 case InputKind::ObjC: 2109 #if defined(CLANG_DEFAULT_STD_C) 2110 LangStd = CLANG_DEFAULT_STD_C; 2111 #else 2112 LangStd = LangStandard::lang_gnu11; 2113 #endif 2114 break; 2115 case InputKind::CXX: 2116 case InputKind::ObjCXX: 2117 #if defined(CLANG_DEFAULT_STD_CXX) 2118 LangStd = CLANG_DEFAULT_STD_CXX; 2119 #else 2120 LangStd = LangStandard::lang_gnucxx14; 2121 #endif 2122 break; 2123 case InputKind::RenderScript: 2124 LangStd = LangStandard::lang_c99; 2125 break; 2126 case InputKind::HIP: 2127 LangStd = LangStandard::lang_hip; 2128 break; 2129 } 2130 } 2131 2132 const LangStandard &Std = LangStandard::getLangStandardForKind(LangStd); 2133 Opts.LineComment = Std.hasLineComments(); 2134 Opts.C99 = Std.isC99(); 2135 Opts.C11 = Std.isC11(); 2136 Opts.C17 = Std.isC17(); 2137 Opts.CPlusPlus = Std.isCPlusPlus(); 2138 Opts.CPlusPlus11 = Std.isCPlusPlus11(); 2139 Opts.CPlusPlus14 = Std.isCPlusPlus14(); 2140 Opts.CPlusPlus17 = Std.isCPlusPlus17(); 2141 Opts.CPlusPlus2a = Std.isCPlusPlus2a(); 2142 Opts.Digraphs = Std.hasDigraphs(); 2143 Opts.GNUMode = Std.isGNUMode(); 2144 Opts.GNUInline = !Opts.C99 && !Opts.CPlusPlus; 2145 Opts.HexFloats = Std.hasHexFloats(); 2146 Opts.ImplicitInt = Std.hasImplicitInt(); 2147 2148 // Set OpenCL Version. 2149 Opts.OpenCL = Std.isOpenCL(); 2150 if (LangStd == LangStandard::lang_opencl10) 2151 Opts.OpenCLVersion = 100; 2152 else if (LangStd == LangStandard::lang_opencl11) 2153 Opts.OpenCLVersion = 110; 2154 else if (LangStd == LangStandard::lang_opencl12) 2155 Opts.OpenCLVersion = 120; 2156 else if (LangStd == LangStandard::lang_opencl20) 2157 Opts.OpenCLVersion = 200; 2158 else if (LangStd == LangStandard::lang_openclcpp) 2159 Opts.OpenCLCPlusPlusVersion = 100; 2160 2161 // OpenCL has some additional defaults. 2162 if (Opts.OpenCL) { 2163 Opts.AltiVec = 0; 2164 Opts.ZVector = 0; 2165 Opts.LaxVectorConversions = 0; 2166 Opts.setDefaultFPContractMode(LangOptions::FPC_On); 2167 Opts.NativeHalfType = 1; 2168 Opts.NativeHalfArgsAndReturns = 1; 2169 Opts.OpenCLCPlusPlus = Opts.CPlusPlus; 2170 // Include default header file for OpenCL. 2171 if (Opts.IncludeDefaultHeader) { 2172 PPOpts.Includes.push_back("opencl-c.h"); 2173 } 2174 } 2175 2176 Opts.HIP = IK.getLanguage() == InputKind::HIP; 2177 Opts.CUDA = IK.getLanguage() == InputKind::CUDA || Opts.HIP; 2178 if (Opts.CUDA) 2179 // Set default FP_CONTRACT to FAST. 2180 Opts.setDefaultFPContractMode(LangOptions::FPC_Fast); 2181 2182 Opts.RenderScript = IK.getLanguage() == InputKind::RenderScript; 2183 if (Opts.RenderScript) { 2184 Opts.NativeHalfType = 1; 2185 Opts.NativeHalfArgsAndReturns = 1; 2186 } 2187 2188 // OpenCL and C++ both have bool, true, false keywords. 2189 Opts.Bool = Opts.OpenCL || Opts.CPlusPlus; 2190 2191 // OpenCL has half keyword 2192 Opts.Half = Opts.OpenCL; 2193 2194 // C++ has wchar_t keyword. 2195 Opts.WChar = Opts.CPlusPlus; 2196 2197 Opts.GNUKeywords = Opts.GNUMode; 2198 Opts.CXXOperatorNames = Opts.CPlusPlus; 2199 2200 Opts.AlignedAllocation = Opts.CPlusPlus17; 2201 2202 Opts.DollarIdents = !Opts.AsmPreprocessor; 2203 } 2204 2205 /// Attempt to parse a visibility value out of the given argument. 2206 static Visibility parseVisibility(Arg *arg, ArgList &args, 2207 DiagnosticsEngine &diags) { 2208 StringRef value = arg->getValue(); 2209 if (value == "default") { 2210 return DefaultVisibility; 2211 } else if (value == "hidden" || value == "internal") { 2212 return HiddenVisibility; 2213 } else if (value == "protected") { 2214 // FIXME: diagnose if target does not support protected visibility 2215 return ProtectedVisibility; 2216 } 2217 2218 diags.Report(diag::err_drv_invalid_value) 2219 << arg->getAsString(args) << value; 2220 return DefaultVisibility; 2221 } 2222 2223 /// Check if input file kind and language standard are compatible. 2224 static bool IsInputCompatibleWithStandard(InputKind IK, 2225 const LangStandard &S) { 2226 switch (IK.getLanguage()) { 2227 case InputKind::Unknown: 2228 case InputKind::LLVM_IR: 2229 llvm_unreachable("should not parse language flags for this input"); 2230 2231 case InputKind::C: 2232 case InputKind::ObjC: 2233 case InputKind::RenderScript: 2234 return S.getLanguage() == InputKind::C; 2235 2236 case InputKind::OpenCL: 2237 return S.getLanguage() == InputKind::OpenCL; 2238 2239 case InputKind::CXX: 2240 case InputKind::ObjCXX: 2241 return S.getLanguage() == InputKind::CXX; 2242 2243 case InputKind::CUDA: 2244 // FIXME: What -std= values should be permitted for CUDA compilations? 2245 return S.getLanguage() == InputKind::CUDA || 2246 S.getLanguage() == InputKind::CXX; 2247 2248 case InputKind::HIP: 2249 return S.getLanguage() == InputKind::CXX || 2250 S.getLanguage() == InputKind::HIP; 2251 2252 case InputKind::Asm: 2253 // Accept (and ignore) all -std= values. 2254 // FIXME: The -std= value is not ignored; it affects the tokenization 2255 // and preprocessing rules if we're preprocessing this asm input. 2256 return true; 2257 } 2258 2259 llvm_unreachable("unexpected input language"); 2260 } 2261 2262 /// Get language name for given input kind. 2263 static const StringRef GetInputKindName(InputKind IK) { 2264 switch (IK.getLanguage()) { 2265 case InputKind::C: 2266 return "C"; 2267 case InputKind::ObjC: 2268 return "Objective-C"; 2269 case InputKind::CXX: 2270 return "C++"; 2271 case InputKind::ObjCXX: 2272 return "Objective-C++"; 2273 case InputKind::OpenCL: 2274 return "OpenCL"; 2275 case InputKind::CUDA: 2276 return "CUDA"; 2277 case InputKind::RenderScript: 2278 return "RenderScript"; 2279 case InputKind::HIP: 2280 return "HIP"; 2281 2282 case InputKind::Asm: 2283 return "Asm"; 2284 case InputKind::LLVM_IR: 2285 return "LLVM IR"; 2286 2287 case InputKind::Unknown: 2288 break; 2289 } 2290 llvm_unreachable("unknown input language"); 2291 } 2292 2293 static void ParseLangArgs(LangOptions &Opts, ArgList &Args, InputKind IK, 2294 const TargetOptions &TargetOpts, 2295 PreprocessorOptions &PPOpts, 2296 DiagnosticsEngine &Diags) { 2297 // FIXME: Cleanup per-file based stuff. 2298 LangStandard::Kind LangStd = LangStandard::lang_unspecified; 2299 if (const Arg *A = Args.getLastArg(OPT_std_EQ)) { 2300 LangStd = llvm::StringSwitch<LangStandard::Kind>(A->getValue()) 2301 #define LANGSTANDARD(id, name, lang, desc, features) \ 2302 .Case(name, LangStandard::lang_##id) 2303 #define LANGSTANDARD_ALIAS(id, alias) \ 2304 .Case(alias, LangStandard::lang_##id) 2305 #include "clang/Frontend/LangStandards.def" 2306 .Default(LangStandard::lang_unspecified); 2307 if (LangStd == LangStandard::lang_unspecified) { 2308 Diags.Report(diag::err_drv_invalid_value) 2309 << A->getAsString(Args) << A->getValue(); 2310 // Report supported standards with short description. 2311 for (unsigned KindValue = 0; 2312 KindValue != LangStandard::lang_unspecified; 2313 ++KindValue) { 2314 const LangStandard &Std = LangStandard::getLangStandardForKind( 2315 static_cast<LangStandard::Kind>(KindValue)); 2316 if (IsInputCompatibleWithStandard(IK, Std)) { 2317 auto Diag = Diags.Report(diag::note_drv_use_standard); 2318 Diag << Std.getName() << Std.getDescription(); 2319 unsigned NumAliases = 0; 2320 #define LANGSTANDARD(id, name, lang, desc, features) 2321 #define LANGSTANDARD_ALIAS(id, alias) \ 2322 if (KindValue == LangStandard::lang_##id) ++NumAliases; 2323 #define LANGSTANDARD_ALIAS_DEPR(id, alias) 2324 #include "clang/Frontend/LangStandards.def" 2325 Diag << NumAliases; 2326 #define LANGSTANDARD(id, name, lang, desc, features) 2327 #define LANGSTANDARD_ALIAS(id, alias) \ 2328 if (KindValue == LangStandard::lang_##id) Diag << alias; 2329 #define LANGSTANDARD_ALIAS_DEPR(id, alias) 2330 #include "clang/Frontend/LangStandards.def" 2331 } 2332 } 2333 } else { 2334 // Valid standard, check to make sure language and standard are 2335 // compatible. 2336 const LangStandard &Std = LangStandard::getLangStandardForKind(LangStd); 2337 if (!IsInputCompatibleWithStandard(IK, Std)) { 2338 Diags.Report(diag::err_drv_argument_not_allowed_with) 2339 << A->getAsString(Args) << GetInputKindName(IK); 2340 } 2341 } 2342 } 2343 2344 if (Args.hasArg(OPT_fno_dllexport_inlines)) 2345 Opts.DllExportInlines = false; 2346 2347 if (const Arg *A = Args.getLastArg(OPT_fcf_protection_EQ)) { 2348 StringRef Name = A->getValue(); 2349 if (Name == "full" || Name == "branch") { 2350 Opts.CFProtectionBranch = 1; 2351 } 2352 } 2353 // -cl-std only applies for OpenCL language standards. 2354 // Override the -std option in this case. 2355 if (const Arg *A = Args.getLastArg(OPT_cl_std_EQ)) { 2356 LangStandard::Kind OpenCLLangStd 2357 = llvm::StringSwitch<LangStandard::Kind>(A->getValue()) 2358 .Cases("cl", "CL", LangStandard::lang_opencl10) 2359 .Cases("cl1.1", "CL1.1", LangStandard::lang_opencl11) 2360 .Cases("cl1.2", "CL1.2", LangStandard::lang_opencl12) 2361 .Cases("cl2.0", "CL2.0", LangStandard::lang_opencl20) 2362 .Case("c++", LangStandard::lang_openclcpp) 2363 .Default(LangStandard::lang_unspecified); 2364 2365 if (OpenCLLangStd == LangStandard::lang_unspecified) { 2366 Diags.Report(diag::err_drv_invalid_value) 2367 << A->getAsString(Args) << A->getValue(); 2368 } 2369 else 2370 LangStd = OpenCLLangStd; 2371 } 2372 2373 Opts.IncludeDefaultHeader = Args.hasArg(OPT_finclude_default_header); 2374 2375 llvm::Triple T(TargetOpts.Triple); 2376 CompilerInvocation::setLangDefaults(Opts, IK, T, PPOpts, LangStd); 2377 2378 // -cl-strict-aliasing needs to emit diagnostic in the case where CL > 1.0. 2379 // This option should be deprecated for CL > 1.0 because 2380 // this option was added for compatibility with OpenCL 1.0. 2381 if (Args.getLastArg(OPT_cl_strict_aliasing) 2382 && Opts.OpenCLVersion > 100) { 2383 Diags.Report(diag::warn_option_invalid_ocl_version) 2384 << Opts.getOpenCLVersionTuple().getAsString() 2385 << Args.getLastArg(OPT_cl_strict_aliasing)->getAsString(Args); 2386 } 2387 2388 // We abuse '-f[no-]gnu-keywords' to force overriding all GNU-extension 2389 // keywords. This behavior is provided by GCC's poorly named '-fasm' flag, 2390 // while a subset (the non-C++ GNU keywords) is provided by GCC's 2391 // '-fgnu-keywords'. Clang conflates the two for simplicity under the single 2392 // name, as it doesn't seem a useful distinction. 2393 Opts.GNUKeywords = Args.hasFlag(OPT_fgnu_keywords, OPT_fno_gnu_keywords, 2394 Opts.GNUKeywords); 2395 2396 Opts.Digraphs = Args.hasFlag(OPT_fdigraphs, OPT_fno_digraphs, Opts.Digraphs); 2397 2398 if (Args.hasArg(OPT_fno_operator_names)) 2399 Opts.CXXOperatorNames = 0; 2400 2401 if (Args.hasArg(OPT_fcuda_is_device)) 2402 Opts.CUDAIsDevice = 1; 2403 2404 if (Args.hasArg(OPT_fcuda_allow_variadic_functions)) 2405 Opts.CUDAAllowVariadicFunctions = 1; 2406 2407 if (Args.hasArg(OPT_fno_cuda_host_device_constexpr)) 2408 Opts.CUDAHostDeviceConstexpr = 0; 2409 2410 if (Opts.CUDAIsDevice && Args.hasArg(OPT_fcuda_approx_transcendentals)) 2411 Opts.CUDADeviceApproxTranscendentals = 1; 2412 2413 Opts.GPURelocatableDeviceCode = Args.hasArg(OPT_fgpu_rdc); 2414 2415 if (Opts.ObjC) { 2416 if (Arg *arg = Args.getLastArg(OPT_fobjc_runtime_EQ)) { 2417 StringRef value = arg->getValue(); 2418 if (Opts.ObjCRuntime.tryParse(value)) 2419 Diags.Report(diag::err_drv_unknown_objc_runtime) << value; 2420 } 2421 2422 if (Args.hasArg(OPT_fobjc_gc_only)) 2423 Opts.setGC(LangOptions::GCOnly); 2424 else if (Args.hasArg(OPT_fobjc_gc)) 2425 Opts.setGC(LangOptions::HybridGC); 2426 else if (Args.hasArg(OPT_fobjc_arc)) { 2427 Opts.ObjCAutoRefCount = 1; 2428 if (!Opts.ObjCRuntime.allowsARC()) 2429 Diags.Report(diag::err_arc_unsupported_on_runtime); 2430 } 2431 2432 // ObjCWeakRuntime tracks whether the runtime supports __weak, not 2433 // whether the feature is actually enabled. This is predominantly 2434 // determined by -fobjc-runtime, but we allow it to be overridden 2435 // from the command line for testing purposes. 2436 if (Args.hasArg(OPT_fobjc_runtime_has_weak)) 2437 Opts.ObjCWeakRuntime = 1; 2438 else 2439 Opts.ObjCWeakRuntime = Opts.ObjCRuntime.allowsWeak(); 2440 2441 // ObjCWeak determines whether __weak is actually enabled. 2442 // Note that we allow -fno-objc-weak to disable this even in ARC mode. 2443 if (auto weakArg = Args.getLastArg(OPT_fobjc_weak, OPT_fno_objc_weak)) { 2444 if (!weakArg->getOption().matches(OPT_fobjc_weak)) { 2445 assert(!Opts.ObjCWeak); 2446 } else if (Opts.getGC() != LangOptions::NonGC) { 2447 Diags.Report(diag::err_objc_weak_with_gc); 2448 } else if (!Opts.ObjCWeakRuntime) { 2449 Diags.Report(diag::err_objc_weak_unsupported); 2450 } else { 2451 Opts.ObjCWeak = 1; 2452 } 2453 } else if (Opts.ObjCAutoRefCount) { 2454 Opts.ObjCWeak = Opts.ObjCWeakRuntime; 2455 } 2456 2457 if (Args.hasArg(OPT_fno_objc_infer_related_result_type)) 2458 Opts.ObjCInferRelatedResultType = 0; 2459 2460 if (Args.hasArg(OPT_fobjc_subscripting_legacy_runtime)) 2461 Opts.ObjCSubscriptingLegacyRuntime = 2462 (Opts.ObjCRuntime.getKind() == ObjCRuntime::FragileMacOSX); 2463 } 2464 2465 if (Args.hasArg(OPT_fgnu89_inline)) { 2466 if (Opts.CPlusPlus) 2467 Diags.Report(diag::err_drv_argument_not_allowed_with) 2468 << "-fgnu89-inline" << GetInputKindName(IK); 2469 else 2470 Opts.GNUInline = 1; 2471 } 2472 2473 if (Args.hasArg(OPT_fapple_kext)) { 2474 if (!Opts.CPlusPlus) 2475 Diags.Report(diag::warn_c_kext); 2476 else 2477 Opts.AppleKext = 1; 2478 } 2479 2480 if (Args.hasArg(OPT_print_ivar_layout)) 2481 Opts.ObjCGCBitmapPrint = 1; 2482 2483 if (Args.hasArg(OPT_fno_constant_cfstrings)) 2484 Opts.NoConstantCFStrings = 1; 2485 if (const auto *A = Args.getLastArg(OPT_fcf_runtime_abi_EQ)) 2486 Opts.CFRuntime = 2487 llvm::StringSwitch<LangOptions::CoreFoundationABI>(A->getValue()) 2488 .Cases("unspecified", "standalone", "objc", 2489 LangOptions::CoreFoundationABI::ObjectiveC) 2490 .Cases("swift", "swift-5.0", 2491 LangOptions::CoreFoundationABI::Swift5_0) 2492 .Case("swift-4.2", LangOptions::CoreFoundationABI::Swift4_2) 2493 .Case("swift-4.1", LangOptions::CoreFoundationABI::Swift4_1) 2494 .Default(LangOptions::CoreFoundationABI::ObjectiveC); 2495 2496 if (Args.hasArg(OPT_fzvector)) 2497 Opts.ZVector = 1; 2498 2499 if (Args.hasArg(OPT_pthread)) 2500 Opts.POSIXThreads = 1; 2501 2502 // The value-visibility mode defaults to "default". 2503 if (Arg *visOpt = Args.getLastArg(OPT_fvisibility)) { 2504 Opts.setValueVisibilityMode(parseVisibility(visOpt, Args, Diags)); 2505 } else { 2506 Opts.setValueVisibilityMode(DefaultVisibility); 2507 } 2508 2509 // The type-visibility mode defaults to the value-visibility mode. 2510 if (Arg *typeVisOpt = Args.getLastArg(OPT_ftype_visibility)) { 2511 Opts.setTypeVisibilityMode(parseVisibility(typeVisOpt, Args, Diags)); 2512 } else { 2513 Opts.setTypeVisibilityMode(Opts.getValueVisibilityMode()); 2514 } 2515 2516 if (Args.hasArg(OPT_fvisibility_inlines_hidden)) 2517 Opts.InlineVisibilityHidden = 1; 2518 2519 if (Args.hasArg(OPT_fvisibility_global_new_delete_hidden)) 2520 Opts.GlobalAllocationFunctionVisibilityHidden = 1; 2521 2522 if (Args.hasArg(OPT_fapply_global_visibility_to_externs)) 2523 Opts.SetVisibilityForExternDecls = 1; 2524 2525 if (Args.hasArg(OPT_ftrapv)) { 2526 Opts.setSignedOverflowBehavior(LangOptions::SOB_Trapping); 2527 // Set the handler, if one is specified. 2528 Opts.OverflowHandler = 2529 Args.getLastArgValue(OPT_ftrapv_handler); 2530 } 2531 else if (Args.hasArg(OPT_fwrapv)) 2532 Opts.setSignedOverflowBehavior(LangOptions::SOB_Defined); 2533 2534 Opts.MSVCCompat = Args.hasArg(OPT_fms_compatibility); 2535 Opts.MicrosoftExt = Opts.MSVCCompat || Args.hasArg(OPT_fms_extensions); 2536 Opts.AsmBlocks = Args.hasArg(OPT_fasm_blocks) || Opts.MicrosoftExt; 2537 Opts.MSCompatibilityVersion = 0; 2538 if (const Arg *A = Args.getLastArg(OPT_fms_compatibility_version)) { 2539 VersionTuple VT; 2540 if (VT.tryParse(A->getValue())) 2541 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) 2542 << A->getValue(); 2543 Opts.MSCompatibilityVersion = VT.getMajor() * 10000000 + 2544 VT.getMinor().getValueOr(0) * 100000 + 2545 VT.getSubminor().getValueOr(0); 2546 } 2547 2548 // Mimicking gcc's behavior, trigraphs are only enabled if -trigraphs 2549 // is specified, or -std is set to a conforming mode. 2550 // Trigraphs are disabled by default in c++1z onwards. 2551 Opts.Trigraphs = !Opts.GNUMode && !Opts.MSVCCompat && !Opts.CPlusPlus17; 2552 Opts.Trigraphs = 2553 Args.hasFlag(OPT_ftrigraphs, OPT_fno_trigraphs, Opts.Trigraphs); 2554 2555 Opts.DollarIdents = Args.hasFlag(OPT_fdollars_in_identifiers, 2556 OPT_fno_dollars_in_identifiers, 2557 Opts.DollarIdents); 2558 Opts.PascalStrings = Args.hasArg(OPT_fpascal_strings); 2559 Opts.VtorDispMode = getLastArgIntValue(Args, OPT_vtordisp_mode_EQ, 1, Diags); 2560 Opts.Borland = Args.hasArg(OPT_fborland_extensions); 2561 Opts.WritableStrings = Args.hasArg(OPT_fwritable_strings); 2562 Opts.ConstStrings = Args.hasFlag(OPT_fconst_strings, OPT_fno_const_strings, 2563 Opts.ConstStrings); 2564 if (Args.hasArg(OPT_fno_lax_vector_conversions)) 2565 Opts.LaxVectorConversions = 0; 2566 if (Args.hasArg(OPT_fno_threadsafe_statics)) 2567 Opts.ThreadsafeStatics = 0; 2568 Opts.Exceptions = Args.hasArg(OPT_fexceptions); 2569 Opts.ObjCExceptions = Args.hasArg(OPT_fobjc_exceptions); 2570 Opts.CXXExceptions = Args.hasArg(OPT_fcxx_exceptions); 2571 2572 // -ffixed-point 2573 Opts.FixedPoint = 2574 Args.hasFlag(OPT_ffixed_point, OPT_fno_fixed_point, /*Default=*/false) && 2575 !Opts.CPlusPlus; 2576 Opts.PaddingOnUnsignedFixedPoint = 2577 Args.hasFlag(OPT_fpadding_on_unsigned_fixed_point, 2578 OPT_fno_padding_on_unsigned_fixed_point, 2579 /*Default=*/false) && 2580 Opts.FixedPoint; 2581 2582 // Handle exception personalities 2583 Arg *A = Args.getLastArg(options::OPT_fsjlj_exceptions, 2584 options::OPT_fseh_exceptions, 2585 options::OPT_fdwarf_exceptions); 2586 if (A) { 2587 const Option &Opt = A->getOption(); 2588 llvm::Triple T(TargetOpts.Triple); 2589 if (T.isWindowsMSVCEnvironment()) 2590 Diags.Report(diag::err_fe_invalid_exception_model) 2591 << Opt.getName() << T.str(); 2592 2593 Opts.SjLjExceptions = Opt.matches(options::OPT_fsjlj_exceptions); 2594 Opts.SEHExceptions = Opt.matches(options::OPT_fseh_exceptions); 2595 Opts.DWARFExceptions = Opt.matches(options::OPT_fdwarf_exceptions); 2596 } 2597 2598 Opts.ExternCNoUnwind = Args.hasArg(OPT_fexternc_nounwind); 2599 Opts.TraditionalCPP = Args.hasArg(OPT_traditional_cpp); 2600 2601 Opts.RTTI = Opts.CPlusPlus && !Args.hasArg(OPT_fno_rtti); 2602 Opts.RTTIData = Opts.RTTI && !Args.hasArg(OPT_fno_rtti_data); 2603 Opts.Blocks = Args.hasArg(OPT_fblocks) || (Opts.OpenCL 2604 && Opts.OpenCLVersion == 200); 2605 Opts.BlocksRuntimeOptional = Args.hasArg(OPT_fblocks_runtime_optional); 2606 Opts.Coroutines = Opts.CPlusPlus2a || Args.hasArg(OPT_fcoroutines_ts); 2607 2608 // Enable [[]] attributes in C++11 by default. 2609 Opts.DoubleSquareBracketAttributes = 2610 Args.hasFlag(OPT_fdouble_square_bracket_attributes, 2611 OPT_fno_double_square_bracket_attributes, Opts.CPlusPlus11); 2612 2613 Opts.CPlusPlusModules = Opts.CPlusPlus2a; 2614 Opts.ModulesTS = Args.hasArg(OPT_fmodules_ts); 2615 Opts.Modules = 2616 Args.hasArg(OPT_fmodules) || Opts.ModulesTS || Opts.CPlusPlusModules; 2617 Opts.ModulesStrictDeclUse = Args.hasArg(OPT_fmodules_strict_decluse); 2618 Opts.ModulesDeclUse = 2619 Args.hasArg(OPT_fmodules_decluse) || Opts.ModulesStrictDeclUse; 2620 // FIXME: We only need this in C++ modules / Modules TS if we might textually 2621 // enter a different module (eg, when building a header unit). 2622 Opts.ModulesLocalVisibility = 2623 Args.hasArg(OPT_fmodules_local_submodule_visibility) || Opts.ModulesTS || 2624 Opts.CPlusPlusModules; 2625 Opts.ModulesCodegen = Args.hasArg(OPT_fmodules_codegen); 2626 Opts.ModulesDebugInfo = Args.hasArg(OPT_fmodules_debuginfo); 2627 Opts.ModulesSearchAll = Opts.Modules && 2628 !Args.hasArg(OPT_fno_modules_search_all) && 2629 Args.hasArg(OPT_fmodules_search_all); 2630 Opts.ModulesErrorRecovery = !Args.hasArg(OPT_fno_modules_error_recovery); 2631 Opts.ImplicitModules = !Args.hasArg(OPT_fno_implicit_modules); 2632 Opts.CharIsSigned = Opts.OpenCL || !Args.hasArg(OPT_fno_signed_char); 2633 Opts.WChar = Opts.CPlusPlus && !Args.hasArg(OPT_fno_wchar); 2634 Opts.Char8 = Args.hasFlag(OPT_fchar8__t, OPT_fno_char8__t, Opts.CPlusPlus2a); 2635 if (const Arg *A = Args.getLastArg(OPT_fwchar_type_EQ)) { 2636 Opts.WCharSize = llvm::StringSwitch<unsigned>(A->getValue()) 2637 .Case("char", 1) 2638 .Case("short", 2) 2639 .Case("int", 4) 2640 .Default(0); 2641 if (Opts.WCharSize == 0) 2642 Diags.Report(diag::err_fe_invalid_wchar_type) << A->getValue(); 2643 } 2644 Opts.WCharIsSigned = Args.hasFlag(OPT_fsigned_wchar, OPT_fno_signed_wchar, true); 2645 Opts.ShortEnums = Args.hasArg(OPT_fshort_enums); 2646 Opts.Freestanding = Args.hasArg(OPT_ffreestanding); 2647 Opts.NoBuiltin = Args.hasArg(OPT_fno_builtin) || Opts.Freestanding; 2648 if (!Opts.NoBuiltin) 2649 getAllNoBuiltinFuncValues(Args, Opts.NoBuiltinFuncs); 2650 Opts.NoMathBuiltin = Args.hasArg(OPT_fno_math_builtin); 2651 Opts.RelaxedTemplateTemplateArgs = 2652 Args.hasArg(OPT_frelaxed_template_template_args); 2653 Opts.SizedDeallocation = Args.hasArg(OPT_fsized_deallocation); 2654 Opts.AlignedAllocation = 2655 Args.hasFlag(OPT_faligned_allocation, OPT_fno_aligned_allocation, 2656 Opts.AlignedAllocation); 2657 Opts.AlignedAllocationUnavailable = 2658 Opts.AlignedAllocation && Args.hasArg(OPT_aligned_alloc_unavailable); 2659 Opts.NewAlignOverride = 2660 getLastArgIntValue(Args, OPT_fnew_alignment_EQ, 0, Diags); 2661 if (Opts.NewAlignOverride && !llvm::isPowerOf2_32(Opts.NewAlignOverride)) { 2662 Arg *A = Args.getLastArg(OPT_fnew_alignment_EQ); 2663 Diags.Report(diag::err_fe_invalid_alignment) << A->getAsString(Args) 2664 << A->getValue(); 2665 Opts.NewAlignOverride = 0; 2666 } 2667 Opts.ConceptsTS = Args.hasArg(OPT_fconcepts_ts); 2668 Opts.HeinousExtensions = Args.hasArg(OPT_fheinous_gnu_extensions); 2669 Opts.AccessControl = !Args.hasArg(OPT_fno_access_control); 2670 Opts.ElideConstructors = !Args.hasArg(OPT_fno_elide_constructors); 2671 Opts.MathErrno = !Opts.OpenCL && Args.hasArg(OPT_fmath_errno); 2672 Opts.InstantiationDepth = 2673 getLastArgIntValue(Args, OPT_ftemplate_depth, 1024, Diags); 2674 Opts.ArrowDepth = 2675 getLastArgIntValue(Args, OPT_foperator_arrow_depth, 256, Diags); 2676 Opts.ConstexprCallDepth = 2677 getLastArgIntValue(Args, OPT_fconstexpr_depth, 512, Diags); 2678 Opts.ConstexprStepLimit = 2679 getLastArgIntValue(Args, OPT_fconstexpr_steps, 1048576, Diags); 2680 Opts.BracketDepth = getLastArgIntValue(Args, OPT_fbracket_depth, 256, Diags); 2681 Opts.DelayedTemplateParsing = Args.hasArg(OPT_fdelayed_template_parsing); 2682 Opts.NumLargeByValueCopy = 2683 getLastArgIntValue(Args, OPT_Wlarge_by_value_copy_EQ, 0, Diags); 2684 Opts.MSBitfields = Args.hasArg(OPT_mms_bitfields); 2685 Opts.ObjCConstantStringClass = 2686 Args.getLastArgValue(OPT_fconstant_string_class); 2687 Opts.ObjCDefaultSynthProperties = 2688 !Args.hasArg(OPT_disable_objc_default_synthesize_properties); 2689 Opts.EncodeExtendedBlockSig = 2690 Args.hasArg(OPT_fencode_extended_block_signature); 2691 Opts.EmitAllDecls = Args.hasArg(OPT_femit_all_decls); 2692 Opts.PackStruct = getLastArgIntValue(Args, OPT_fpack_struct_EQ, 0, Diags); 2693 Opts.MaxTypeAlign = getLastArgIntValue(Args, OPT_fmax_type_align_EQ, 0, Diags); 2694 Opts.AlignDouble = Args.hasArg(OPT_malign_double); 2695 Opts.PICLevel = getLastArgIntValue(Args, OPT_pic_level, 0, Diags); 2696 Opts.ROPI = Args.hasArg(OPT_fropi); 2697 Opts.RWPI = Args.hasArg(OPT_frwpi); 2698 Opts.PIE = Args.hasArg(OPT_pic_is_pie); 2699 Opts.Static = Args.hasArg(OPT_static_define); 2700 Opts.DumpRecordLayoutsSimple = Args.hasArg(OPT_fdump_record_layouts_simple); 2701 Opts.DumpRecordLayouts = Opts.DumpRecordLayoutsSimple 2702 || Args.hasArg(OPT_fdump_record_layouts); 2703 Opts.DumpVTableLayouts = Args.hasArg(OPT_fdump_vtable_layouts); 2704 Opts.SpellChecking = !Args.hasArg(OPT_fno_spell_checking); 2705 Opts.NoBitFieldTypeAlign = Args.hasArg(OPT_fno_bitfield_type_align); 2706 Opts.SinglePrecisionConstants = Args.hasArg(OPT_cl_single_precision_constant); 2707 Opts.FastRelaxedMath = Args.hasArg(OPT_cl_fast_relaxed_math); 2708 Opts.HexagonQdsp6Compat = Args.hasArg(OPT_mqdsp6_compat); 2709 Opts.FakeAddressSpaceMap = Args.hasArg(OPT_ffake_address_space_map); 2710 Opts.ParseUnknownAnytype = Args.hasArg(OPT_funknown_anytype); 2711 Opts.DebuggerSupport = Args.hasArg(OPT_fdebugger_support); 2712 Opts.DebuggerCastResultToId = Args.hasArg(OPT_fdebugger_cast_result_to_id); 2713 Opts.DebuggerObjCLiteral = Args.hasArg(OPT_fdebugger_objc_literal); 2714 Opts.ApplePragmaPack = Args.hasArg(OPT_fapple_pragma_pack); 2715 Opts.ModuleName = Args.getLastArgValue(OPT_fmodule_name_EQ); 2716 Opts.CurrentModule = Opts.ModuleName; 2717 Opts.AppExt = Args.hasArg(OPT_fapplication_extension); 2718 Opts.ModuleFeatures = Args.getAllArgValues(OPT_fmodule_feature); 2719 llvm::sort(Opts.ModuleFeatures); 2720 Opts.NativeHalfType |= Args.hasArg(OPT_fnative_half_type); 2721 Opts.NativeHalfArgsAndReturns |= Args.hasArg(OPT_fnative_half_arguments_and_returns); 2722 // Enable HalfArgsAndReturns if present in Args or if NativeHalfArgsAndReturns 2723 // is enabled. 2724 Opts.HalfArgsAndReturns = Args.hasArg(OPT_fallow_half_arguments_and_returns) 2725 | Opts.NativeHalfArgsAndReturns; 2726 Opts.GNUAsm = !Args.hasArg(OPT_fno_gnu_inline_asm); 2727 2728 // __declspec is enabled by default for the PS4 by the driver, and also 2729 // enabled for Microsoft Extensions or Borland Extensions, here. 2730 // 2731 // FIXME: __declspec is also currently enabled for CUDA, but isn't really a 2732 // CUDA extension. However, it is required for supporting 2733 // __clang_cuda_builtin_vars.h, which uses __declspec(property). Once that has 2734 // been rewritten in terms of something more generic, remove the Opts.CUDA 2735 // term here. 2736 Opts.DeclSpecKeyword = 2737 Args.hasFlag(OPT_fdeclspec, OPT_fno_declspec, 2738 (Opts.MicrosoftExt || Opts.Borland || Opts.CUDA)); 2739 2740 if (Arg *A = Args.getLastArg(OPT_faddress_space_map_mangling_EQ)) { 2741 switch (llvm::StringSwitch<unsigned>(A->getValue()) 2742 .Case("target", LangOptions::ASMM_Target) 2743 .Case("no", LangOptions::ASMM_Off) 2744 .Case("yes", LangOptions::ASMM_On) 2745 .Default(255)) { 2746 default: 2747 Diags.Report(diag::err_drv_invalid_value) 2748 << "-faddress-space-map-mangling=" << A->getValue(); 2749 break; 2750 case LangOptions::ASMM_Target: 2751 Opts.setAddressSpaceMapMangling(LangOptions::ASMM_Target); 2752 break; 2753 case LangOptions::ASMM_On: 2754 Opts.setAddressSpaceMapMangling(LangOptions::ASMM_On); 2755 break; 2756 case LangOptions::ASMM_Off: 2757 Opts.setAddressSpaceMapMangling(LangOptions::ASMM_Off); 2758 break; 2759 } 2760 } 2761 2762 if (Arg *A = Args.getLastArg(OPT_fms_memptr_rep_EQ)) { 2763 LangOptions::PragmaMSPointersToMembersKind InheritanceModel = 2764 llvm::StringSwitch<LangOptions::PragmaMSPointersToMembersKind>( 2765 A->getValue()) 2766 .Case("single", 2767 LangOptions::PPTMK_FullGeneralitySingleInheritance) 2768 .Case("multiple", 2769 LangOptions::PPTMK_FullGeneralityMultipleInheritance) 2770 .Case("virtual", 2771 LangOptions::PPTMK_FullGeneralityVirtualInheritance) 2772 .Default(LangOptions::PPTMK_BestCase); 2773 if (InheritanceModel == LangOptions::PPTMK_BestCase) 2774 Diags.Report(diag::err_drv_invalid_value) 2775 << "-fms-memptr-rep=" << A->getValue(); 2776 2777 Opts.setMSPointerToMemberRepresentationMethod(InheritanceModel); 2778 } 2779 2780 // Check for MS default calling conventions being specified. 2781 if (Arg *A = Args.getLastArg(OPT_fdefault_calling_conv_EQ)) { 2782 LangOptions::DefaultCallingConvention DefaultCC = 2783 llvm::StringSwitch<LangOptions::DefaultCallingConvention>(A->getValue()) 2784 .Case("cdecl", LangOptions::DCC_CDecl) 2785 .Case("fastcall", LangOptions::DCC_FastCall) 2786 .Case("stdcall", LangOptions::DCC_StdCall) 2787 .Case("vectorcall", LangOptions::DCC_VectorCall) 2788 .Case("regcall", LangOptions::DCC_RegCall) 2789 .Default(LangOptions::DCC_None); 2790 if (DefaultCC == LangOptions::DCC_None) 2791 Diags.Report(diag::err_drv_invalid_value) 2792 << "-fdefault-calling-conv=" << A->getValue(); 2793 2794 llvm::Triple T(TargetOpts.Triple); 2795 llvm::Triple::ArchType Arch = T.getArch(); 2796 bool emitError = (DefaultCC == LangOptions::DCC_FastCall || 2797 DefaultCC == LangOptions::DCC_StdCall) && 2798 Arch != llvm::Triple::x86; 2799 emitError |= (DefaultCC == LangOptions::DCC_VectorCall || 2800 DefaultCC == LangOptions::DCC_RegCall) && 2801 !(Arch == llvm::Triple::x86 || Arch == llvm::Triple::x86_64); 2802 if (emitError) 2803 Diags.Report(diag::err_drv_argument_not_allowed_with) 2804 << A->getSpelling() << T.getTriple(); 2805 else 2806 Opts.setDefaultCallingConv(DefaultCC); 2807 } 2808 2809 // -mrtd option 2810 if (Arg *A = Args.getLastArg(OPT_mrtd)) { 2811 if (Opts.getDefaultCallingConv() != LangOptions::DCC_None) 2812 Diags.Report(diag::err_drv_argument_not_allowed_with) 2813 << A->getSpelling() << "-fdefault-calling-conv"; 2814 else { 2815 llvm::Triple T(TargetOpts.Triple); 2816 if (T.getArch() != llvm::Triple::x86) 2817 Diags.Report(diag::err_drv_argument_not_allowed_with) 2818 << A->getSpelling() << T.getTriple(); 2819 else 2820 Opts.setDefaultCallingConv(LangOptions::DCC_StdCall); 2821 } 2822 } 2823 2824 // Check if -fopenmp is specified. 2825 Opts.OpenMP = Args.hasArg(options::OPT_fopenmp) ? 1 : 0; 2826 // Check if -fopenmp-simd is specified. 2827 bool IsSimdSpecified = 2828 Args.hasFlag(options::OPT_fopenmp_simd, options::OPT_fno_openmp_simd, 2829 /*Default=*/false); 2830 Opts.OpenMPSimd = !Opts.OpenMP && IsSimdSpecified; 2831 Opts.OpenMPUseTLS = 2832 Opts.OpenMP && !Args.hasArg(options::OPT_fnoopenmp_use_tls); 2833 Opts.OpenMPIsDevice = 2834 Opts.OpenMP && Args.hasArg(options::OPT_fopenmp_is_device); 2835 bool IsTargetSpecified = 2836 Opts.OpenMPIsDevice || Args.hasArg(options::OPT_fopenmp_targets_EQ); 2837 2838 if (Opts.OpenMP || Opts.OpenMPSimd) { 2839 if (int Version = getLastArgIntValue( 2840 Args, OPT_fopenmp_version_EQ, 2841 (IsSimdSpecified || IsTargetSpecified) ? 45 : Opts.OpenMP, Diags)) 2842 Opts.OpenMP = Version; 2843 else if (IsSimdSpecified || IsTargetSpecified) 2844 Opts.OpenMP = 45; 2845 // Provide diagnostic when a given target is not expected to be an OpenMP 2846 // device or host. 2847 if (!Opts.OpenMPIsDevice) { 2848 switch (T.getArch()) { 2849 default: 2850 break; 2851 // Add unsupported host targets here: 2852 case llvm::Triple::nvptx: 2853 case llvm::Triple::nvptx64: 2854 Diags.Report(diag::err_drv_omp_host_target_not_supported) 2855 << TargetOpts.Triple; 2856 break; 2857 } 2858 } 2859 } 2860 2861 // Set the flag to prevent the implementation from emitting device exception 2862 // handling code for those requiring so. 2863 if ((Opts.OpenMPIsDevice && T.isNVPTX()) || Opts.OpenCLCPlusPlus) { 2864 Opts.Exceptions = 0; 2865 Opts.CXXExceptions = 0; 2866 } 2867 if (Opts.OpenMPIsDevice && T.isNVPTX()) { 2868 Opts.OpenMPCUDANumSMs = 2869 getLastArgIntValue(Args, options::OPT_fopenmp_cuda_number_of_sm_EQ, 2870 Opts.OpenMPCUDANumSMs, Diags); 2871 Opts.OpenMPCUDABlocksPerSM = 2872 getLastArgIntValue(Args, options::OPT_fopenmp_cuda_blocks_per_sm_EQ, 2873 Opts.OpenMPCUDABlocksPerSM, Diags); 2874 Opts.OpenMPCUDAReductionBufNum = getLastArgIntValue( 2875 Args, options::OPT_fopenmp_cuda_teams_reduction_recs_num_EQ, 2876 Opts.OpenMPCUDAReductionBufNum, Diags); 2877 } 2878 2879 // Prevent auto-widening the representation of loop counters during an 2880 // OpenMP collapse clause. 2881 Opts.OpenMPOptimisticCollapse = 2882 Args.hasArg(options::OPT_fopenmp_optimistic_collapse) ? 1 : 0; 2883 2884 // Get the OpenMP target triples if any. 2885 if (Arg *A = Args.getLastArg(options::OPT_fopenmp_targets_EQ)) { 2886 2887 for (unsigned i = 0; i < A->getNumValues(); ++i) { 2888 llvm::Triple TT(A->getValue(i)); 2889 2890 if (TT.getArch() == llvm::Triple::UnknownArch || 2891 !(TT.getArch() == llvm::Triple::ppc || 2892 TT.getArch() == llvm::Triple::ppc64 || 2893 TT.getArch() == llvm::Triple::ppc64le || 2894 TT.getArch() == llvm::Triple::nvptx || 2895 TT.getArch() == llvm::Triple::nvptx64 || 2896 TT.getArch() == llvm::Triple::x86 || 2897 TT.getArch() == llvm::Triple::x86_64)) 2898 Diags.Report(diag::err_drv_invalid_omp_target) << A->getValue(i); 2899 else 2900 Opts.OMPTargetTriples.push_back(TT); 2901 } 2902 } 2903 2904 // Get OpenMP host file path if any and report if a non existent file is 2905 // found 2906 if (Arg *A = Args.getLastArg(options::OPT_fopenmp_host_ir_file_path)) { 2907 Opts.OMPHostIRFile = A->getValue(); 2908 if (!llvm::sys::fs::exists(Opts.OMPHostIRFile)) 2909 Diags.Report(diag::err_drv_omp_host_ir_file_not_found) 2910 << Opts.OMPHostIRFile; 2911 } 2912 2913 Opts.SYCLIsDevice = Args.hasArg(options::OPT_fsycl_is_device); 2914 2915 // Set CUDA mode for OpenMP target NVPTX if specified in options 2916 Opts.OpenMPCUDAMode = Opts.OpenMPIsDevice && T.isNVPTX() && 2917 Args.hasArg(options::OPT_fopenmp_cuda_mode); 2918 2919 // Set CUDA mode for OpenMP target NVPTX if specified in options 2920 Opts.OpenMPCUDAForceFullRuntime = 2921 Opts.OpenMPIsDevice && T.isNVPTX() && 2922 Args.hasArg(options::OPT_fopenmp_cuda_force_full_runtime); 2923 2924 // Record whether the __DEPRECATED define was requested. 2925 Opts.Deprecated = Args.hasFlag(OPT_fdeprecated_macro, 2926 OPT_fno_deprecated_macro, 2927 Opts.Deprecated); 2928 2929 // FIXME: Eliminate this dependency. 2930 unsigned Opt = getOptimizationLevel(Args, IK, Diags), 2931 OptSize = getOptimizationLevelSize(Args); 2932 Opts.Optimize = Opt != 0; 2933 Opts.OptimizeSize = OptSize != 0; 2934 2935 // This is the __NO_INLINE__ define, which just depends on things like the 2936 // optimization level and -fno-inline, not actually whether the backend has 2937 // inlining enabled. 2938 Opts.NoInlineDefine = !Opts.Optimize; 2939 if (Arg *InlineArg = Args.getLastArg( 2940 options::OPT_finline_functions, options::OPT_finline_hint_functions, 2941 options::OPT_fno_inline_functions, options::OPT_fno_inline)) 2942 if (InlineArg->getOption().matches(options::OPT_fno_inline)) 2943 Opts.NoInlineDefine = true; 2944 2945 Opts.FastMath = Args.hasArg(OPT_ffast_math) || 2946 Args.hasArg(OPT_cl_fast_relaxed_math); 2947 Opts.FiniteMathOnly = Args.hasArg(OPT_ffinite_math_only) || 2948 Args.hasArg(OPT_cl_finite_math_only) || 2949 Args.hasArg(OPT_cl_fast_relaxed_math); 2950 Opts.UnsafeFPMath = Args.hasArg(OPT_menable_unsafe_fp_math) || 2951 Args.hasArg(OPT_cl_unsafe_math_optimizations) || 2952 Args.hasArg(OPT_cl_fast_relaxed_math); 2953 2954 if (Arg *A = Args.getLastArg(OPT_ffp_contract)) { 2955 StringRef Val = A->getValue(); 2956 if (Val == "fast") 2957 Opts.setDefaultFPContractMode(LangOptions::FPC_Fast); 2958 else if (Val == "on") 2959 Opts.setDefaultFPContractMode(LangOptions::FPC_On); 2960 else if (Val == "off") 2961 Opts.setDefaultFPContractMode(LangOptions::FPC_Off); 2962 else 2963 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Val; 2964 } 2965 2966 Opts.RetainCommentsFromSystemHeaders = 2967 Args.hasArg(OPT_fretain_comments_from_system_headers); 2968 2969 unsigned SSP = getLastArgIntValue(Args, OPT_stack_protector, 0, Diags); 2970 switch (SSP) { 2971 default: 2972 Diags.Report(diag::err_drv_invalid_value) 2973 << Args.getLastArg(OPT_stack_protector)->getAsString(Args) << SSP; 2974 break; 2975 case 0: Opts.setStackProtector(LangOptions::SSPOff); break; 2976 case 1: Opts.setStackProtector(LangOptions::SSPOn); break; 2977 case 2: Opts.setStackProtector(LangOptions::SSPStrong); break; 2978 case 3: Opts.setStackProtector(LangOptions::SSPReq); break; 2979 } 2980 2981 if (Arg *A = Args.getLastArg(OPT_ftrivial_auto_var_init)) { 2982 StringRef Val = A->getValue(); 2983 if (Val == "uninitialized") 2984 Opts.setTrivialAutoVarInit( 2985 LangOptions::TrivialAutoVarInitKind::Uninitialized); 2986 else if (Val == "zero") 2987 Opts.setTrivialAutoVarInit(LangOptions::TrivialAutoVarInitKind::Zero); 2988 else if (Val == "pattern") 2989 Opts.setTrivialAutoVarInit(LangOptions::TrivialAutoVarInitKind::Pattern); 2990 else 2991 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Val; 2992 } 2993 2994 // Parse -fsanitize= arguments. 2995 parseSanitizerKinds("-fsanitize=", Args.getAllArgValues(OPT_fsanitize_EQ), 2996 Diags, Opts.Sanitize); 2997 // -fsanitize-address-field-padding=N has to be a LangOpt, parse it here. 2998 Opts.SanitizeAddressFieldPadding = 2999 getLastArgIntValue(Args, OPT_fsanitize_address_field_padding, 0, Diags); 3000 Opts.SanitizerBlacklistFiles = Args.getAllArgValues(OPT_fsanitize_blacklist); 3001 3002 // -fxray-instrument 3003 Opts.XRayInstrument = 3004 Args.hasFlag(OPT_fxray_instrument, OPT_fnoxray_instrument, false); 3005 3006 // -fxray-always-emit-customevents 3007 Opts.XRayAlwaysEmitCustomEvents = 3008 Args.hasFlag(OPT_fxray_always_emit_customevents, 3009 OPT_fnoxray_always_emit_customevents, false); 3010 3011 // -fxray-always-emit-typedevents 3012 Opts.XRayAlwaysEmitTypedEvents = 3013 Args.hasFlag(OPT_fxray_always_emit_typedevents, 3014 OPT_fnoxray_always_emit_customevents, false); 3015 3016 // -fxray-{always,never}-instrument= filenames. 3017 Opts.XRayAlwaysInstrumentFiles = 3018 Args.getAllArgValues(OPT_fxray_always_instrument); 3019 Opts.XRayNeverInstrumentFiles = 3020 Args.getAllArgValues(OPT_fxray_never_instrument); 3021 Opts.XRayAttrListFiles = Args.getAllArgValues(OPT_fxray_attr_list); 3022 3023 // -fforce-emit-vtables 3024 Opts.ForceEmitVTables = Args.hasArg(OPT_fforce_emit_vtables); 3025 3026 // -fallow-editor-placeholders 3027 Opts.AllowEditorPlaceholders = Args.hasArg(OPT_fallow_editor_placeholders); 3028 3029 Opts.RegisterStaticDestructors = !Args.hasArg(OPT_fno_cxx_static_destructors); 3030 3031 if (Arg *A = Args.getLastArg(OPT_fclang_abi_compat_EQ)) { 3032 Opts.setClangABICompat(LangOptions::ClangABI::Latest); 3033 3034 StringRef Ver = A->getValue(); 3035 std::pair<StringRef, StringRef> VerParts = Ver.split('.'); 3036 unsigned Major, Minor = 0; 3037 3038 // Check the version number is valid: either 3.x (0 <= x <= 9) or 3039 // y or y.0 (4 <= y <= current version). 3040 if (!VerParts.first.startswith("0") && 3041 !VerParts.first.getAsInteger(10, Major) && 3042 3 <= Major && Major <= CLANG_VERSION_MAJOR && 3043 (Major == 3 ? VerParts.second.size() == 1 && 3044 !VerParts.second.getAsInteger(10, Minor) 3045 : VerParts.first.size() == Ver.size() || 3046 VerParts.second == "0")) { 3047 // Got a valid version number. 3048 if (Major == 3 && Minor <= 8) 3049 Opts.setClangABICompat(LangOptions::ClangABI::Ver3_8); 3050 else if (Major <= 4) 3051 Opts.setClangABICompat(LangOptions::ClangABI::Ver4); 3052 else if (Major <= 6) 3053 Opts.setClangABICompat(LangOptions::ClangABI::Ver6); 3054 else if (Major <= 7) 3055 Opts.setClangABICompat(LangOptions::ClangABI::Ver7); 3056 } else if (Ver != "latest") { 3057 Diags.Report(diag::err_drv_invalid_value) 3058 << A->getAsString(Args) << A->getValue(); 3059 } 3060 } 3061 3062 Opts.CompleteMemberPointers = Args.hasArg(OPT_fcomplete_member_pointers); 3063 Opts.BuildingPCHWithObjectFile = Args.hasArg(OPT_building_pch_with_obj); 3064 } 3065 3066 static bool isStrictlyPreprocessorAction(frontend::ActionKind Action) { 3067 switch (Action) { 3068 case frontend::ASTDeclList: 3069 case frontend::ASTDump: 3070 case frontend::ASTPrint: 3071 case frontend::ASTView: 3072 case frontend::EmitAssembly: 3073 case frontend::EmitBC: 3074 case frontend::EmitHTML: 3075 case frontend::EmitLLVM: 3076 case frontend::EmitLLVMOnly: 3077 case frontend::EmitCodeGenOnly: 3078 case frontend::EmitObj: 3079 case frontend::FixIt: 3080 case frontend::GenerateModule: 3081 case frontend::GenerateModuleInterface: 3082 case frontend::GenerateHeaderModule: 3083 case frontend::GeneratePCH: 3084 case frontend::ParseSyntaxOnly: 3085 case frontend::ModuleFileInfo: 3086 case frontend::VerifyPCH: 3087 case frontend::PluginAction: 3088 case frontend::RewriteObjC: 3089 case frontend::RewriteTest: 3090 case frontend::RunAnalysis: 3091 case frontend::TemplightDump: 3092 case frontend::MigrateSource: 3093 return false; 3094 3095 case frontend::DumpCompilerOptions: 3096 case frontend::DumpRawTokens: 3097 case frontend::DumpTokens: 3098 case frontend::InitOnly: 3099 case frontend::PrintPreamble: 3100 case frontend::PrintPreprocessedInput: 3101 case frontend::RewriteMacros: 3102 case frontend::RunPreprocessorOnly: 3103 return true; 3104 } 3105 llvm_unreachable("invalid frontend action"); 3106 } 3107 3108 static void ParsePreprocessorArgs(PreprocessorOptions &Opts, ArgList &Args, 3109 DiagnosticsEngine &Diags, 3110 frontend::ActionKind Action) { 3111 Opts.ImplicitPCHInclude = Args.getLastArgValue(OPT_include_pch); 3112 Opts.PCHWithHdrStop = Args.hasArg(OPT_pch_through_hdrstop_create) || 3113 Args.hasArg(OPT_pch_through_hdrstop_use); 3114 Opts.PCHWithHdrStopCreate = Args.hasArg(OPT_pch_through_hdrstop_create); 3115 Opts.PCHThroughHeader = Args.getLastArgValue(OPT_pch_through_header_EQ); 3116 Opts.UsePredefines = !Args.hasArg(OPT_undef); 3117 Opts.DetailedRecord = Args.hasArg(OPT_detailed_preprocessing_record); 3118 Opts.DisablePCHValidation = Args.hasArg(OPT_fno_validate_pch); 3119 Opts.AllowPCHWithCompilerErrors = Args.hasArg(OPT_fallow_pch_with_errors); 3120 3121 Opts.DumpDeserializedPCHDecls = Args.hasArg(OPT_dump_deserialized_pch_decls); 3122 for (const auto *A : Args.filtered(OPT_error_on_deserialized_pch_decl)) 3123 Opts.DeserializedPCHDeclsToErrorOn.insert(A->getValue()); 3124 3125 if (const Arg *A = Args.getLastArg(OPT_preamble_bytes_EQ)) { 3126 StringRef Value(A->getValue()); 3127 size_t Comma = Value.find(','); 3128 unsigned Bytes = 0; 3129 unsigned EndOfLine = 0; 3130 3131 if (Comma == StringRef::npos || 3132 Value.substr(0, Comma).getAsInteger(10, Bytes) || 3133 Value.substr(Comma + 1).getAsInteger(10, EndOfLine)) 3134 Diags.Report(diag::err_drv_preamble_format); 3135 else { 3136 Opts.PrecompiledPreambleBytes.first = Bytes; 3137 Opts.PrecompiledPreambleBytes.second = (EndOfLine != 0); 3138 } 3139 } 3140 3141 // Add the __CET__ macro if a CFProtection option is set. 3142 if (const Arg *A = Args.getLastArg(OPT_fcf_protection_EQ)) { 3143 StringRef Name = A->getValue(); 3144 if (Name == "branch") 3145 Opts.addMacroDef("__CET__=1"); 3146 else if (Name == "return") 3147 Opts.addMacroDef("__CET__=2"); 3148 else if (Name == "full") 3149 Opts.addMacroDef("__CET__=3"); 3150 } 3151 3152 // Add macros from the command line. 3153 for (const auto *A : Args.filtered(OPT_D, OPT_U)) { 3154 if (A->getOption().matches(OPT_D)) 3155 Opts.addMacroDef(A->getValue()); 3156 else 3157 Opts.addMacroUndef(A->getValue()); 3158 } 3159 3160 Opts.MacroIncludes = Args.getAllArgValues(OPT_imacros); 3161 3162 // Add the ordered list of -includes. 3163 for (const auto *A : Args.filtered(OPT_include)) 3164 Opts.Includes.emplace_back(A->getValue()); 3165 3166 for (const auto *A : Args.filtered(OPT_chain_include)) 3167 Opts.ChainedIncludes.emplace_back(A->getValue()); 3168 3169 for (const auto *A : Args.filtered(OPT_remap_file)) { 3170 std::pair<StringRef, StringRef> Split = StringRef(A->getValue()).split(';'); 3171 3172 if (Split.second.empty()) { 3173 Diags.Report(diag::err_drv_invalid_remap_file) << A->getAsString(Args); 3174 continue; 3175 } 3176 3177 Opts.addRemappedFile(Split.first, Split.second); 3178 } 3179 3180 if (Arg *A = Args.getLastArg(OPT_fobjc_arc_cxxlib_EQ)) { 3181 StringRef Name = A->getValue(); 3182 unsigned Library = llvm::StringSwitch<unsigned>(Name) 3183 .Case("libc++", ARCXX_libcxx) 3184 .Case("libstdc++", ARCXX_libstdcxx) 3185 .Case("none", ARCXX_nolib) 3186 .Default(~0U); 3187 if (Library == ~0U) 3188 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Name; 3189 else 3190 Opts.ObjCXXARCStandardLibrary = (ObjCXXARCStandardLibraryKind)Library; 3191 } 3192 3193 // Always avoid lexing editor placeholders when we're just running the 3194 // preprocessor as we never want to emit the 3195 // "editor placeholder in source file" error in PP only mode. 3196 if (isStrictlyPreprocessorAction(Action)) 3197 Opts.LexEditorPlaceholders = false; 3198 } 3199 3200 static void ParsePreprocessorOutputArgs(PreprocessorOutputOptions &Opts, 3201 ArgList &Args, 3202 frontend::ActionKind Action) { 3203 if (isStrictlyPreprocessorAction(Action)) 3204 Opts.ShowCPP = !Args.hasArg(OPT_dM); 3205 else 3206 Opts.ShowCPP = 0; 3207 3208 Opts.ShowComments = Args.hasArg(OPT_C); 3209 Opts.ShowLineMarkers = !Args.hasArg(OPT_P); 3210 Opts.ShowMacroComments = Args.hasArg(OPT_CC); 3211 Opts.ShowMacros = Args.hasArg(OPT_dM) || Args.hasArg(OPT_dD); 3212 Opts.ShowIncludeDirectives = Args.hasArg(OPT_dI); 3213 Opts.RewriteIncludes = Args.hasArg(OPT_frewrite_includes); 3214 Opts.RewriteImports = Args.hasArg(OPT_frewrite_imports); 3215 Opts.UseLineDirectives = Args.hasArg(OPT_fuse_line_directives); 3216 } 3217 3218 static void ParseTargetArgs(TargetOptions &Opts, ArgList &Args, 3219 DiagnosticsEngine &Diags) { 3220 Opts.CodeModel = getCodeModel(Args, Diags); 3221 Opts.ABI = Args.getLastArgValue(OPT_target_abi); 3222 if (Arg *A = Args.getLastArg(OPT_meabi)) { 3223 StringRef Value = A->getValue(); 3224 llvm::EABI EABIVersion = llvm::StringSwitch<llvm::EABI>(Value) 3225 .Case("default", llvm::EABI::Default) 3226 .Case("4", llvm::EABI::EABI4) 3227 .Case("5", llvm::EABI::EABI5) 3228 .Case("gnu", llvm::EABI::GNU) 3229 .Default(llvm::EABI::Unknown); 3230 if (EABIVersion == llvm::EABI::Unknown) 3231 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) 3232 << Value; 3233 else 3234 Opts.EABIVersion = EABIVersion; 3235 } 3236 Opts.CPU = Args.getLastArgValue(OPT_target_cpu); 3237 Opts.FPMath = Args.getLastArgValue(OPT_mfpmath); 3238 Opts.FeaturesAsWritten = Args.getAllArgValues(OPT_target_feature); 3239 Opts.LinkerVersion = Args.getLastArgValue(OPT_target_linker_version); 3240 Opts.Triple = Args.getLastArgValue(OPT_triple); 3241 // Use the default target triple if unspecified. 3242 if (Opts.Triple.empty()) 3243 Opts.Triple = llvm::sys::getDefaultTargetTriple(); 3244 Opts.Triple = llvm::Triple::normalize(Opts.Triple); 3245 Opts.OpenCLExtensionsAsWritten = Args.getAllArgValues(OPT_cl_ext_EQ); 3246 Opts.ForceEnableInt128 = Args.hasArg(OPT_fforce_enable_int128); 3247 Opts.NVPTXUseShortPointers = Args.hasFlag( 3248 options::OPT_fcuda_short_ptr, options::OPT_fno_cuda_short_ptr, false); 3249 if (Arg *A = Args.getLastArg(options::OPT_target_sdk_version_EQ)) { 3250 llvm::VersionTuple Version; 3251 if (Version.tryParse(A->getValue())) 3252 Diags.Report(diag::err_drv_invalid_value) 3253 << A->getAsString(Args) << A->getValue(); 3254 else 3255 Opts.SDKVersion = Version; 3256 } 3257 } 3258 3259 bool CompilerInvocation::CreateFromArgs(CompilerInvocation &Res, 3260 const char *const *ArgBegin, 3261 const char *const *ArgEnd, 3262 DiagnosticsEngine &Diags) { 3263 bool Success = true; 3264 3265 // Parse the arguments. 3266 std::unique_ptr<OptTable> Opts = createDriverOptTable(); 3267 const unsigned IncludedFlagsBitmask = options::CC1Option; 3268 unsigned MissingArgIndex, MissingArgCount; 3269 InputArgList Args = 3270 Opts->ParseArgs(llvm::makeArrayRef(ArgBegin, ArgEnd), MissingArgIndex, 3271 MissingArgCount, IncludedFlagsBitmask); 3272 LangOptions &LangOpts = *Res.getLangOpts(); 3273 3274 // Check for missing argument error. 3275 if (MissingArgCount) { 3276 Diags.Report(diag::err_drv_missing_argument) 3277 << Args.getArgString(MissingArgIndex) << MissingArgCount; 3278 Success = false; 3279 } 3280 3281 // Issue errors on unknown arguments. 3282 for (const auto *A : Args.filtered(OPT_UNKNOWN)) { 3283 auto ArgString = A->getAsString(Args); 3284 std::string Nearest; 3285 if (Opts->findNearest(ArgString, Nearest, IncludedFlagsBitmask) > 1) 3286 Diags.Report(diag::err_drv_unknown_argument) << ArgString; 3287 else 3288 Diags.Report(diag::err_drv_unknown_argument_with_suggestion) 3289 << ArgString << Nearest; 3290 Success = false; 3291 } 3292 3293 Success &= ParseAnalyzerArgs(*Res.getAnalyzerOpts(), Args, Diags); 3294 Success &= ParseMigratorArgs(Res.getMigratorOpts(), Args); 3295 ParseDependencyOutputArgs(Res.getDependencyOutputOpts(), Args); 3296 Success &= 3297 ParseDiagnosticArgs(Res.getDiagnosticOpts(), Args, &Diags, 3298 false /*DefaultDiagColor*/, false /*DefaultShowOpt*/); 3299 ParseCommentArgs(LangOpts.CommentOpts, Args); 3300 ParseFileSystemArgs(Res.getFileSystemOpts(), Args); 3301 // FIXME: We shouldn't have to pass the DashX option around here 3302 InputKind DashX = ParseFrontendArgs(Res.getFrontendOpts(), Args, Diags, 3303 LangOpts.IsHeaderFile); 3304 ParseTargetArgs(Res.getTargetOpts(), Args, Diags); 3305 Success &= ParseCodeGenArgs(Res.getCodeGenOpts(), Args, DashX, Diags, 3306 Res.getTargetOpts(), Res.getFrontendOpts()); 3307 ParseHeaderSearchArgs(Res.getHeaderSearchOpts(), Args, 3308 Res.getFileSystemOpts().WorkingDir); 3309 llvm::Triple T(Res.getTargetOpts().Triple); 3310 if (DashX.getFormat() == InputKind::Precompiled || 3311 DashX.getLanguage() == InputKind::LLVM_IR) { 3312 // ObjCAAutoRefCount and Sanitize LangOpts are used to setup the 3313 // PassManager in BackendUtil.cpp. They need to be initializd no matter 3314 // what the input type is. 3315 if (Args.hasArg(OPT_fobjc_arc)) 3316 LangOpts.ObjCAutoRefCount = 1; 3317 // PIClevel and PIELevel are needed during code generation and this should be 3318 // set regardless of the input type. 3319 LangOpts.PICLevel = getLastArgIntValue(Args, OPT_pic_level, 0, Diags); 3320 LangOpts.PIE = Args.hasArg(OPT_pic_is_pie); 3321 parseSanitizerKinds("-fsanitize=", Args.getAllArgValues(OPT_fsanitize_EQ), 3322 Diags, LangOpts.Sanitize); 3323 } else { 3324 // Other LangOpts are only initialized when the input is not AST or LLVM IR. 3325 // FIXME: Should we really be calling this for an InputKind::Asm input? 3326 ParseLangArgs(LangOpts, Args, DashX, Res.getTargetOpts(), 3327 Res.getPreprocessorOpts(), Diags); 3328 if (Res.getFrontendOpts().ProgramAction == frontend::RewriteObjC) 3329 LangOpts.ObjCExceptions = 1; 3330 if (T.isOSDarwin() && DashX.isPreprocessed()) { 3331 // Supress the darwin-specific 'stdlibcxx-not-found' diagnostic for 3332 // preprocessed input as we don't expect it to be used with -std=libc++ 3333 // anyway. 3334 Res.getDiagnosticOpts().Warnings.push_back("no-stdlibcxx-not-found"); 3335 } 3336 } 3337 3338 LangOpts.FunctionAlignment = 3339 getLastArgIntValue(Args, OPT_function_alignment, 0, Diags); 3340 3341 if (LangOpts.CUDA) { 3342 // During CUDA device-side compilation, the aux triple is the 3343 // triple used for host compilation. 3344 if (LangOpts.CUDAIsDevice) 3345 Res.getTargetOpts().HostTriple = Res.getFrontendOpts().AuxTriple; 3346 } 3347 3348 // Set the triple of the host for OpenMP device compile. 3349 if (LangOpts.OpenMPIsDevice) 3350 Res.getTargetOpts().HostTriple = Res.getFrontendOpts().AuxTriple; 3351 3352 // FIXME: Override value name discarding when asan or msan is used because the 3353 // backend passes depend on the name of the alloca in order to print out 3354 // names. 3355 Res.getCodeGenOpts().DiscardValueNames &= 3356 !LangOpts.Sanitize.has(SanitizerKind::Address) && 3357 !LangOpts.Sanitize.has(SanitizerKind::KernelAddress) && 3358 !LangOpts.Sanitize.has(SanitizerKind::Memory) && 3359 !LangOpts.Sanitize.has(SanitizerKind::KernelMemory); 3360 3361 ParsePreprocessorArgs(Res.getPreprocessorOpts(), Args, Diags, 3362 Res.getFrontendOpts().ProgramAction); 3363 ParsePreprocessorOutputArgs(Res.getPreprocessorOutputOpts(), Args, 3364 Res.getFrontendOpts().ProgramAction); 3365 3366 // Turn on -Wspir-compat for SPIR target. 3367 if (T.isSPIR()) 3368 Res.getDiagnosticOpts().Warnings.push_back("spir-compat"); 3369 3370 // If sanitizer is enabled, disable OPT_ffine_grained_bitfield_accesses. 3371 if (Res.getCodeGenOpts().FineGrainedBitfieldAccesses && 3372 !Res.getLangOpts()->Sanitize.empty()) { 3373 Res.getCodeGenOpts().FineGrainedBitfieldAccesses = false; 3374 Diags.Report(diag::warn_drv_fine_grained_bitfield_accesses_ignored); 3375 } 3376 return Success; 3377 } 3378 3379 std::string CompilerInvocation::getModuleHash() const { 3380 // Note: For QoI reasons, the things we use as a hash here should all be 3381 // dumped via the -module-info flag. 3382 using llvm::hash_code; 3383 using llvm::hash_value; 3384 using llvm::hash_combine; 3385 3386 // Start the signature with the compiler version. 3387 // FIXME: We'd rather use something more cryptographically sound than 3388 // CityHash, but this will do for now. 3389 hash_code code = hash_value(getClangFullRepositoryVersion()); 3390 3391 // Extend the signature with the language options 3392 #define LANGOPT(Name, Bits, Default, Description) \ 3393 code = hash_combine(code, LangOpts->Name); 3394 #define ENUM_LANGOPT(Name, Type, Bits, Default, Description) \ 3395 code = hash_combine(code, static_cast<unsigned>(LangOpts->get##Name())); 3396 #define BENIGN_LANGOPT(Name, Bits, Default, Description) 3397 #define BENIGN_ENUM_LANGOPT(Name, Type, Bits, Default, Description) 3398 #include "clang/Basic/LangOptions.def" 3399 3400 for (StringRef Feature : LangOpts->ModuleFeatures) 3401 code = hash_combine(code, Feature); 3402 3403 // Extend the signature with the target options. 3404 code = hash_combine(code, TargetOpts->Triple, TargetOpts->CPU, 3405 TargetOpts->ABI); 3406 for (const auto &FeatureAsWritten : TargetOpts->FeaturesAsWritten) 3407 code = hash_combine(code, FeatureAsWritten); 3408 3409 // Extend the signature with preprocessor options. 3410 const PreprocessorOptions &ppOpts = getPreprocessorOpts(); 3411 const HeaderSearchOptions &hsOpts = getHeaderSearchOpts(); 3412 code = hash_combine(code, ppOpts.UsePredefines, ppOpts.DetailedRecord); 3413 3414 for (const auto &I : getPreprocessorOpts().Macros) { 3415 // If we're supposed to ignore this macro for the purposes of modules, 3416 // don't put it into the hash. 3417 if (!hsOpts.ModulesIgnoreMacros.empty()) { 3418 // Check whether we're ignoring this macro. 3419 StringRef MacroDef = I.first; 3420 if (hsOpts.ModulesIgnoreMacros.count( 3421 llvm::CachedHashString(MacroDef.split('=').first))) 3422 continue; 3423 } 3424 3425 code = hash_combine(code, I.first, I.second); 3426 } 3427 3428 // Extend the signature with the sysroot and other header search options. 3429 code = hash_combine(code, hsOpts.Sysroot, 3430 hsOpts.ModuleFormat, 3431 hsOpts.UseDebugInfo, 3432 hsOpts.UseBuiltinIncludes, 3433 hsOpts.UseStandardSystemIncludes, 3434 hsOpts.UseStandardCXXIncludes, 3435 hsOpts.UseLibcxx, 3436 hsOpts.ModulesValidateDiagnosticOptions); 3437 code = hash_combine(code, hsOpts.ResourceDir); 3438 3439 // Extend the signature with the user build path. 3440 code = hash_combine(code, hsOpts.ModuleUserBuildPath); 3441 3442 // Extend the signature with the module file extensions. 3443 const FrontendOptions &frontendOpts = getFrontendOpts(); 3444 for (const auto &ext : frontendOpts.ModuleFileExtensions) { 3445 code = ext->hashExtension(code); 3446 } 3447 3448 // When compiling with -gmodules, also hash -fdebug-prefix-map as it 3449 // affects the debug info in the PCM. 3450 if (getCodeGenOpts().DebugTypeExtRefs) 3451 for (const auto &KeyValue : getCodeGenOpts().DebugPrefixMap) 3452 code = hash_combine(code, KeyValue.first, KeyValue.second); 3453 3454 // Extend the signature with the enabled sanitizers, if at least one is 3455 // enabled. Sanitizers which cannot affect AST generation aren't hashed. 3456 SanitizerSet SanHash = LangOpts->Sanitize; 3457 SanHash.clear(getPPTransparentSanitizers()); 3458 if (!SanHash.empty()) 3459 code = hash_combine(code, SanHash.Mask); 3460 3461 return llvm::APInt(64, code).toString(36, /*Signed=*/false); 3462 } 3463 3464 template<typename IntTy> 3465 static IntTy getLastArgIntValueImpl(const ArgList &Args, OptSpecifier Id, 3466 IntTy Default, 3467 DiagnosticsEngine *Diags) { 3468 IntTy Res = Default; 3469 if (Arg *A = Args.getLastArg(Id)) { 3470 if (StringRef(A->getValue()).getAsInteger(10, Res)) { 3471 if (Diags) 3472 Diags->Report(diag::err_drv_invalid_int_value) << A->getAsString(Args) 3473 << A->getValue(); 3474 } 3475 } 3476 return Res; 3477 } 3478 3479 namespace clang { 3480 3481 // Declared in clang/Frontend/Utils.h. 3482 int getLastArgIntValue(const ArgList &Args, OptSpecifier Id, int Default, 3483 DiagnosticsEngine *Diags) { 3484 return getLastArgIntValueImpl<int>(Args, Id, Default, Diags); 3485 } 3486 3487 uint64_t getLastArgUInt64Value(const ArgList &Args, OptSpecifier Id, 3488 uint64_t Default, 3489 DiagnosticsEngine *Diags) { 3490 return getLastArgIntValueImpl<uint64_t>(Args, Id, Default, Diags); 3491 } 3492 3493 IntrusiveRefCntPtr<llvm::vfs::FileSystem> 3494 createVFSFromCompilerInvocation(const CompilerInvocation &CI, 3495 DiagnosticsEngine &Diags) { 3496 return createVFSFromCompilerInvocation(CI, Diags, 3497 llvm::vfs::getRealFileSystem()); 3498 } 3499 3500 IntrusiveRefCntPtr<llvm::vfs::FileSystem> createVFSFromCompilerInvocation( 3501 const CompilerInvocation &CI, DiagnosticsEngine &Diags, 3502 IntrusiveRefCntPtr<llvm::vfs::FileSystem> BaseFS) { 3503 if (CI.getHeaderSearchOpts().VFSOverlayFiles.empty()) 3504 return BaseFS; 3505 3506 IntrusiveRefCntPtr<llvm::vfs::FileSystem> Result = BaseFS; 3507 // earlier vfs files are on the bottom 3508 for (const auto &File : CI.getHeaderSearchOpts().VFSOverlayFiles) { 3509 llvm::ErrorOr<std::unique_ptr<llvm::MemoryBuffer>> Buffer = 3510 Result->getBufferForFile(File); 3511 if (!Buffer) { 3512 Diags.Report(diag::err_missing_vfs_overlay_file) << File; 3513 continue; 3514 } 3515 3516 IntrusiveRefCntPtr<llvm::vfs::FileSystem> FS = llvm::vfs::getVFSFromYAML( 3517 std::move(Buffer.get()), /*DiagHandler*/ nullptr, File, 3518 /*DiagContext*/ nullptr, Result); 3519 if (!FS) { 3520 Diags.Report(diag::err_invalid_vfs_overlay) << File; 3521 continue; 3522 } 3523 3524 Result = FS; 3525 } 3526 return Result; 3527 } 3528 3529 } // namespace clang 3530