1 //===--- CompilerInvocation.cpp -------------------------------------------===// 2 // 3 // The LLVM Compiler Infrastructure 4 // 5 // This file is distributed under the University of Illinois Open Source 6 // License. See LICENSE.TXT for details. 7 // 8 //===----------------------------------------------------------------------===// 9 10 #include "TestModuleFileExtension.h" 11 #include "clang/Basic/Builtins.h" 12 #include "clang/Basic/FileManager.h" 13 #include "clang/Basic/Version.h" 14 #include "clang/Config/config.h" 15 #include "clang/Driver/DriverDiagnostic.h" 16 #include "clang/Driver/Options.h" 17 #include "clang/Driver/Util.h" 18 #include "clang/Frontend/CompilerInvocation.h" 19 #include "clang/Frontend/FrontendDiagnostic.h" 20 #include "clang/Frontend/LangStandard.h" 21 #include "clang/Frontend/Utils.h" 22 #include "clang/Lex/HeaderSearchOptions.h" 23 #include "clang/Serialization/ASTReader.h" 24 #include "clang/Serialization/ModuleFileExtension.h" 25 #include "llvm/ADT/Hashing.h" 26 #include "llvm/ADT/STLExtras.h" 27 #include "llvm/ADT/SmallVector.h" 28 #include "llvm/ADT/StringExtras.h" 29 #include "llvm/ADT/StringSwitch.h" 30 #include "llvm/ADT/Triple.h" 31 #include "llvm/Linker/Linker.h" 32 #include "llvm/Option/Arg.h" 33 #include "llvm/Option/ArgList.h" 34 #include "llvm/Option/OptTable.h" 35 #include "llvm/Option/Option.h" 36 #include "llvm/ProfileData/InstrProfReader.h" 37 #include "llvm/Support/CodeGen.h" 38 #include "llvm/Support/ErrorHandling.h" 39 #include "llvm/Support/FileSystem.h" 40 #include "llvm/Support/Host.h" 41 #include "llvm/Support/Path.h" 42 #include "llvm/Support/Process.h" 43 #include "llvm/Target/TargetOptions.h" 44 #include <atomic> 45 #include <memory> 46 #include <sys/stat.h> 47 #include <system_error> 48 using namespace clang; 49 50 //===----------------------------------------------------------------------===// 51 // Initialization. 52 //===----------------------------------------------------------------------===// 53 54 CompilerInvocationBase::CompilerInvocationBase() 55 : LangOpts(new LangOptions()), TargetOpts(new TargetOptions()), 56 DiagnosticOpts(new DiagnosticOptions()), 57 HeaderSearchOpts(new HeaderSearchOptions()), 58 PreprocessorOpts(new PreprocessorOptions()) {} 59 60 CompilerInvocationBase::CompilerInvocationBase(const CompilerInvocationBase &X) 61 : RefCountedBase<CompilerInvocation>(), 62 LangOpts(new LangOptions(*X.getLangOpts())), 63 TargetOpts(new TargetOptions(X.getTargetOpts())), 64 DiagnosticOpts(new DiagnosticOptions(X.getDiagnosticOpts())), 65 HeaderSearchOpts(new HeaderSearchOptions(X.getHeaderSearchOpts())), 66 PreprocessorOpts(new PreprocessorOptions(X.getPreprocessorOpts())) {} 67 68 CompilerInvocationBase::~CompilerInvocationBase() {} 69 70 //===----------------------------------------------------------------------===// 71 // Deserialization (from args) 72 //===----------------------------------------------------------------------===// 73 74 using namespace clang::driver; 75 using namespace clang::driver::options; 76 using namespace llvm::opt; 77 78 // 79 80 static unsigned getOptimizationLevel(ArgList &Args, InputKind IK, 81 DiagnosticsEngine &Diags) { 82 unsigned DefaultOpt = 0; 83 if (IK == IK_OpenCL && !Args.hasArg(OPT_cl_opt_disable)) 84 DefaultOpt = 2; 85 86 if (Arg *A = Args.getLastArg(options::OPT_O_Group)) { 87 if (A->getOption().matches(options::OPT_O0)) 88 return 0; 89 90 if (A->getOption().matches(options::OPT_Ofast)) 91 return 3; 92 93 assert (A->getOption().matches(options::OPT_O)); 94 95 StringRef S(A->getValue()); 96 if (S == "s" || S == "z" || S.empty()) 97 return 2; 98 99 return getLastArgIntValue(Args, OPT_O, DefaultOpt, Diags); 100 } 101 102 return DefaultOpt; 103 } 104 105 static unsigned getOptimizationLevelSize(ArgList &Args) { 106 if (Arg *A = Args.getLastArg(options::OPT_O_Group)) { 107 if (A->getOption().matches(options::OPT_O)) { 108 switch (A->getValue()[0]) { 109 default: 110 return 0; 111 case 's': 112 return 1; 113 case 'z': 114 return 2; 115 } 116 } 117 } 118 return 0; 119 } 120 121 static void addDiagnosticArgs(ArgList &Args, OptSpecifier Group, 122 OptSpecifier GroupWithValue, 123 std::vector<std::string> &Diagnostics) { 124 for (Arg *A : Args.filtered(Group)) { 125 if (A->getOption().getKind() == Option::FlagClass) { 126 // The argument is a pure flag (such as OPT_Wall or OPT_Wdeprecated). Add 127 // its name (minus the "W" or "R" at the beginning) to the warning list. 128 Diagnostics.push_back(A->getOption().getName().drop_front(1)); 129 } else if (A->getOption().matches(GroupWithValue)) { 130 // This is -Wfoo= or -Rfoo=, where foo is the name of the diagnostic group. 131 Diagnostics.push_back(A->getOption().getName().drop_front(1).rtrim("=-")); 132 } else { 133 // Otherwise, add its value (for OPT_W_Joined and similar). 134 for (const char *Arg : A->getValues()) 135 Diagnostics.emplace_back(Arg); 136 } 137 } 138 } 139 140 static void getAllNoBuiltinFuncValues(ArgList &Args, 141 std::vector<std::string> &Funcs) { 142 SmallVector<const char *, 8> Values; 143 for (const auto &Arg : Args) { 144 const Option &O = Arg->getOption(); 145 if (O.matches(options::OPT_fno_builtin_)) { 146 const char *FuncName = Arg->getValue(); 147 if (Builtin::Context::isBuiltinFunc(FuncName)) 148 Values.push_back(FuncName); 149 } 150 } 151 Funcs.insert(Funcs.end(), Values.begin(), Values.end()); 152 } 153 154 static bool ParseAnalyzerArgs(AnalyzerOptions &Opts, ArgList &Args, 155 DiagnosticsEngine &Diags) { 156 using namespace options; 157 bool Success = true; 158 if (Arg *A = Args.getLastArg(OPT_analyzer_store)) { 159 StringRef Name = A->getValue(); 160 AnalysisStores Value = llvm::StringSwitch<AnalysisStores>(Name) 161 #define ANALYSIS_STORE(NAME, CMDFLAG, DESC, CREATFN) \ 162 .Case(CMDFLAG, NAME##Model) 163 #include "clang/StaticAnalyzer/Core/Analyses.def" 164 .Default(NumStores); 165 if (Value == NumStores) { 166 Diags.Report(diag::err_drv_invalid_value) 167 << A->getAsString(Args) << Name; 168 Success = false; 169 } else { 170 Opts.AnalysisStoreOpt = Value; 171 } 172 } 173 174 if (Arg *A = Args.getLastArg(OPT_analyzer_constraints)) { 175 StringRef Name = A->getValue(); 176 AnalysisConstraints Value = llvm::StringSwitch<AnalysisConstraints>(Name) 177 #define ANALYSIS_CONSTRAINTS(NAME, CMDFLAG, DESC, CREATFN) \ 178 .Case(CMDFLAG, NAME##Model) 179 #include "clang/StaticAnalyzer/Core/Analyses.def" 180 .Default(NumConstraints); 181 if (Value == NumConstraints) { 182 Diags.Report(diag::err_drv_invalid_value) 183 << A->getAsString(Args) << Name; 184 Success = false; 185 } else { 186 Opts.AnalysisConstraintsOpt = Value; 187 } 188 } 189 190 if (Arg *A = Args.getLastArg(OPT_analyzer_output)) { 191 StringRef Name = A->getValue(); 192 AnalysisDiagClients Value = llvm::StringSwitch<AnalysisDiagClients>(Name) 193 #define ANALYSIS_DIAGNOSTICS(NAME, CMDFLAG, DESC, CREATFN) \ 194 .Case(CMDFLAG, PD_##NAME) 195 #include "clang/StaticAnalyzer/Core/Analyses.def" 196 .Default(NUM_ANALYSIS_DIAG_CLIENTS); 197 if (Value == NUM_ANALYSIS_DIAG_CLIENTS) { 198 Diags.Report(diag::err_drv_invalid_value) 199 << A->getAsString(Args) << Name; 200 Success = false; 201 } else { 202 Opts.AnalysisDiagOpt = Value; 203 } 204 } 205 206 if (Arg *A = Args.getLastArg(OPT_analyzer_purge)) { 207 StringRef Name = A->getValue(); 208 AnalysisPurgeMode Value = llvm::StringSwitch<AnalysisPurgeMode>(Name) 209 #define ANALYSIS_PURGE(NAME, CMDFLAG, DESC) \ 210 .Case(CMDFLAG, NAME) 211 #include "clang/StaticAnalyzer/Core/Analyses.def" 212 .Default(NumPurgeModes); 213 if (Value == NumPurgeModes) { 214 Diags.Report(diag::err_drv_invalid_value) 215 << A->getAsString(Args) << Name; 216 Success = false; 217 } else { 218 Opts.AnalysisPurgeOpt = Value; 219 } 220 } 221 222 if (Arg *A = Args.getLastArg(OPT_analyzer_inlining_mode)) { 223 StringRef Name = A->getValue(); 224 AnalysisInliningMode Value = llvm::StringSwitch<AnalysisInliningMode>(Name) 225 #define ANALYSIS_INLINING_MODE(NAME, CMDFLAG, DESC) \ 226 .Case(CMDFLAG, NAME) 227 #include "clang/StaticAnalyzer/Core/Analyses.def" 228 .Default(NumInliningModes); 229 if (Value == NumInliningModes) { 230 Diags.Report(diag::err_drv_invalid_value) 231 << A->getAsString(Args) << Name; 232 Success = false; 233 } else { 234 Opts.InliningMode = Value; 235 } 236 } 237 238 Opts.ShowCheckerHelp = Args.hasArg(OPT_analyzer_checker_help); 239 Opts.DisableAllChecks = Args.hasArg(OPT_analyzer_disable_all_checks); 240 241 Opts.visualizeExplodedGraphWithGraphViz = 242 Args.hasArg(OPT_analyzer_viz_egraph_graphviz); 243 Opts.visualizeExplodedGraphWithUbiGraph = 244 Args.hasArg(OPT_analyzer_viz_egraph_ubigraph); 245 Opts.NoRetryExhausted = Args.hasArg(OPT_analyzer_disable_retry_exhausted); 246 Opts.AnalyzeAll = Args.hasArg(OPT_analyzer_opt_analyze_headers); 247 Opts.AnalyzerDisplayProgress = Args.hasArg(OPT_analyzer_display_progress); 248 Opts.AnalyzeNestedBlocks = 249 Args.hasArg(OPT_analyzer_opt_analyze_nested_blocks); 250 Opts.eagerlyAssumeBinOpBifurcation = Args.hasArg(OPT_analyzer_eagerly_assume); 251 Opts.AnalyzeSpecificFunction = Args.getLastArgValue(OPT_analyze_function); 252 Opts.UnoptimizedCFG = Args.hasArg(OPT_analysis_UnoptimizedCFG); 253 Opts.TrimGraph = Args.hasArg(OPT_trim_egraph); 254 Opts.maxBlockVisitOnPath = 255 getLastArgIntValue(Args, OPT_analyzer_max_loop, 4, Diags); 256 Opts.PrintStats = Args.hasArg(OPT_analyzer_stats); 257 Opts.InlineMaxStackDepth = 258 getLastArgIntValue(Args, OPT_analyzer_inline_max_stack_depth, 259 Opts.InlineMaxStackDepth, Diags); 260 261 Opts.CheckersControlList.clear(); 262 for (const Arg *A : 263 Args.filtered(OPT_analyzer_checker, OPT_analyzer_disable_checker)) { 264 A->claim(); 265 bool enable = (A->getOption().getID() == OPT_analyzer_checker); 266 // We can have a list of comma separated checker names, e.g: 267 // '-analyzer-checker=cocoa,unix' 268 StringRef checkerList = A->getValue(); 269 SmallVector<StringRef, 4> checkers; 270 checkerList.split(checkers, ","); 271 for (StringRef checker : checkers) 272 Opts.CheckersControlList.emplace_back(checker, enable); 273 } 274 275 // Go through the analyzer configuration options. 276 for (const Arg *A : Args.filtered(OPT_analyzer_config)) { 277 A->claim(); 278 // We can have a list of comma separated config names, e.g: 279 // '-analyzer-config key1=val1,key2=val2' 280 StringRef configList = A->getValue(); 281 SmallVector<StringRef, 4> configVals; 282 configList.split(configVals, ","); 283 for (unsigned i = 0, e = configVals.size(); i != e; ++i) { 284 StringRef key, val; 285 std::tie(key, val) = configVals[i].split("="); 286 if (val.empty()) { 287 Diags.Report(SourceLocation(), 288 diag::err_analyzer_config_no_value) << configVals[i]; 289 Success = false; 290 break; 291 } 292 if (val.find('=') != StringRef::npos) { 293 Diags.Report(SourceLocation(), 294 diag::err_analyzer_config_multiple_values) 295 << configVals[i]; 296 Success = false; 297 break; 298 } 299 Opts.Config[key] = val; 300 } 301 } 302 303 return Success; 304 } 305 306 static bool ParseMigratorArgs(MigratorOptions &Opts, ArgList &Args) { 307 Opts.NoNSAllocReallocError = Args.hasArg(OPT_migrator_no_nsalloc_error); 308 Opts.NoFinalizeRemoval = Args.hasArg(OPT_migrator_no_finalize_removal); 309 return true; 310 } 311 312 static void ParseCommentArgs(CommentOptions &Opts, ArgList &Args) { 313 Opts.BlockCommandNames = Args.getAllArgValues(OPT_fcomment_block_commands); 314 Opts.ParseAllComments = Args.hasArg(OPT_fparse_all_comments); 315 } 316 317 static StringRef getCodeModel(ArgList &Args, DiagnosticsEngine &Diags) { 318 if (Arg *A = Args.getLastArg(OPT_mcode_model)) { 319 StringRef Value = A->getValue(); 320 if (Value == "small" || Value == "kernel" || Value == "medium" || 321 Value == "large") 322 return Value; 323 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Value; 324 } 325 return "default"; 326 } 327 328 /// \brief Create a new Regex instance out of the string value in \p RpassArg. 329 /// It returns a pointer to the newly generated Regex instance. 330 static std::shared_ptr<llvm::Regex> 331 GenerateOptimizationRemarkRegex(DiagnosticsEngine &Diags, ArgList &Args, 332 Arg *RpassArg) { 333 StringRef Val = RpassArg->getValue(); 334 std::string RegexError; 335 std::shared_ptr<llvm::Regex> Pattern = std::make_shared<llvm::Regex>(Val); 336 if (!Pattern->isValid(RegexError)) { 337 Diags.Report(diag::err_drv_optimization_remark_pattern) 338 << RegexError << RpassArg->getAsString(Args); 339 Pattern.reset(); 340 } 341 return Pattern; 342 } 343 344 static bool parseDiagnosticLevelMask(StringRef FlagName, 345 const std::vector<std::string> &Levels, 346 DiagnosticsEngine *Diags, 347 DiagnosticLevelMask &M) { 348 bool Success = true; 349 for (const auto &Level : Levels) { 350 DiagnosticLevelMask const PM = 351 llvm::StringSwitch<DiagnosticLevelMask>(Level) 352 .Case("note", DiagnosticLevelMask::Note) 353 .Case("remark", DiagnosticLevelMask::Remark) 354 .Case("warning", DiagnosticLevelMask::Warning) 355 .Case("error", DiagnosticLevelMask::Error) 356 .Default(DiagnosticLevelMask::None); 357 if (PM == DiagnosticLevelMask::None) { 358 Success = false; 359 if (Diags) 360 Diags->Report(diag::err_drv_invalid_value) << FlagName << Level; 361 } 362 M = M | PM; 363 } 364 return Success; 365 } 366 367 static void parseSanitizerKinds(StringRef FlagName, 368 const std::vector<std::string> &Sanitizers, 369 DiagnosticsEngine &Diags, SanitizerSet &S) { 370 for (const auto &Sanitizer : Sanitizers) { 371 SanitizerMask K = parseSanitizerValue(Sanitizer, /*AllowGroups=*/false); 372 if (K == 0) 373 Diags.Report(diag::err_drv_invalid_value) << FlagName << Sanitizer; 374 else 375 S.set(K, true); 376 } 377 } 378 379 // Set the profile kind for fprofile-instrument. 380 static void setPGOInstrumentor(CodeGenOptions &Opts, ArgList &Args, 381 DiagnosticsEngine &Diags) { 382 Arg *A = Args.getLastArg(OPT_fprofile_instrument_EQ); 383 if (A == nullptr) 384 return; 385 StringRef S = A->getValue(); 386 unsigned I = llvm::StringSwitch<unsigned>(S) 387 .Case("none", CodeGenOptions::ProfileNone) 388 .Case("clang", CodeGenOptions::ProfileClangInstr) 389 .Case("llvm", CodeGenOptions::ProfileIRInstr) 390 .Default(~0U); 391 if (I == ~0U) { 392 Diags.Report(diag::err_drv_invalid_pgo_instrumentor) << A->getAsString(Args) 393 << S; 394 return; 395 } 396 CodeGenOptions::ProfileInstrKind Instrumentor = 397 static_cast<CodeGenOptions::ProfileInstrKind>(I); 398 Opts.setProfileInstr(Instrumentor); 399 } 400 401 // Set the profile kind using fprofile-instrument-use-path. 402 static void setPGOUseInstrumentor(CodeGenOptions &Opts, 403 const Twine &ProfileName) { 404 auto ReaderOrErr = llvm::IndexedInstrProfReader::create(ProfileName); 405 // In error, return silently and let Clang PGOUse report the error message. 406 if (auto E = ReaderOrErr.takeError()) { 407 llvm::consumeError(std::move(E)); 408 Opts.setProfileUse(CodeGenOptions::ProfileClangInstr); 409 return; 410 } 411 std::unique_ptr<llvm::IndexedInstrProfReader> PGOReader = 412 std::move(ReaderOrErr.get()); 413 if (PGOReader->isIRLevelProfile()) 414 Opts.setProfileUse(CodeGenOptions::ProfileIRInstr); 415 else 416 Opts.setProfileUse(CodeGenOptions::ProfileClangInstr); 417 } 418 419 static bool ParseCodeGenArgs(CodeGenOptions &Opts, ArgList &Args, InputKind IK, 420 DiagnosticsEngine &Diags, 421 const TargetOptions &TargetOpts) { 422 using namespace options; 423 bool Success = true; 424 llvm::Triple Triple = llvm::Triple(TargetOpts.Triple); 425 426 unsigned OptimizationLevel = getOptimizationLevel(Args, IK, Diags); 427 // TODO: This could be done in Driver 428 unsigned MaxOptLevel = 3; 429 if (OptimizationLevel > MaxOptLevel) { 430 // If the optimization level is not supported, fall back on the default 431 // optimization 432 Diags.Report(diag::warn_drv_optimization_value) 433 << Args.getLastArg(OPT_O)->getAsString(Args) << "-O" << MaxOptLevel; 434 OptimizationLevel = MaxOptLevel; 435 } 436 Opts.OptimizationLevel = OptimizationLevel; 437 438 // We must always run at least the always inlining pass. 439 Opts.setInlining( 440 (Opts.OptimizationLevel > 1) ? CodeGenOptions::NormalInlining 441 : CodeGenOptions::OnlyAlwaysInlining); 442 // -fno-inline-functions overrides OptimizationLevel > 1. 443 Opts.NoInline = Args.hasArg(OPT_fno_inline); 444 if (Arg* InlineArg = Args.getLastArg(options::OPT_finline_functions, 445 options::OPT_finline_hint_functions, 446 options::OPT_fno_inline_functions)) { 447 const Option& InlineOpt = InlineArg->getOption(); 448 if (InlineOpt.matches(options::OPT_finline_functions)) 449 Opts.setInlining(CodeGenOptions::NormalInlining); 450 else if (InlineOpt.matches(options::OPT_finline_hint_functions)) 451 Opts.setInlining(CodeGenOptions::OnlyHintInlining); 452 else 453 Opts.setInlining(CodeGenOptions::OnlyAlwaysInlining); 454 } 455 456 if (Arg *A = Args.getLastArg(OPT_fveclib)) { 457 StringRef Name = A->getValue(); 458 if (Name == "Accelerate") 459 Opts.setVecLib(CodeGenOptions::Accelerate); 460 else if (Name == "none") 461 Opts.setVecLib(CodeGenOptions::NoLibrary); 462 else 463 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Name; 464 } 465 466 if (Arg *A = Args.getLastArg(OPT_debug_info_kind_EQ)) { 467 unsigned Val = 468 llvm::StringSwitch<unsigned>(A->getValue()) 469 .Case("line-tables-only", codegenoptions::DebugLineTablesOnly) 470 .Case("limited", codegenoptions::LimitedDebugInfo) 471 .Case("standalone", codegenoptions::FullDebugInfo) 472 .Default(~0U); 473 if (Val == ~0U) 474 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) 475 << A->getValue(); 476 else 477 Opts.setDebugInfo(static_cast<codegenoptions::DebugInfoKind>(Val)); 478 } 479 if (Arg *A = Args.getLastArg(OPT_debugger_tuning_EQ)) { 480 unsigned Val = llvm::StringSwitch<unsigned>(A->getValue()) 481 .Case("gdb", unsigned(llvm::DebuggerKind::GDB)) 482 .Case("lldb", unsigned(llvm::DebuggerKind::LLDB)) 483 .Case("sce", unsigned(llvm::DebuggerKind::SCE)) 484 .Default(~0U); 485 if (Val == ~0U) 486 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) 487 << A->getValue(); 488 else 489 Opts.setDebuggerTuning(static_cast<llvm::DebuggerKind>(Val)); 490 } 491 Opts.DwarfVersion = getLastArgIntValue(Args, OPT_dwarf_version_EQ, 0, Diags); 492 Opts.DebugColumnInfo = Args.hasArg(OPT_dwarf_column_info); 493 Opts.EmitCodeView = Args.hasArg(OPT_gcodeview); 494 Opts.WholeProgramVTables = Args.hasArg(OPT_fwhole_program_vtables); 495 Opts.LTOVisibilityPublicStd = Args.hasArg(OPT_flto_visibility_public_std); 496 Opts.SplitDwarfFile = Args.getLastArgValue(OPT_split_dwarf_file); 497 Opts.DebugTypeExtRefs = Args.hasArg(OPT_dwarf_ext_refs); 498 Opts.DebugExplicitImport = Triple.isPS4CPU(); 499 500 for (const auto &Arg : Args.getAllArgValues(OPT_fdebug_prefix_map_EQ)) 501 Opts.DebugPrefixMap.insert(StringRef(Arg).split('=')); 502 503 if (const Arg *A = 504 Args.getLastArg(OPT_emit_llvm_uselists, OPT_no_emit_llvm_uselists)) 505 Opts.EmitLLVMUseLists = A->getOption().getID() == OPT_emit_llvm_uselists; 506 507 Opts.DisableLLVMOpts = Args.hasArg(OPT_disable_llvm_optzns); 508 Opts.DisableLLVMPasses = Args.hasArg(OPT_disable_llvm_passes); 509 Opts.DisableRedZone = Args.hasArg(OPT_disable_red_zone); 510 Opts.ForbidGuardVariables = Args.hasArg(OPT_fforbid_guard_variables); 511 Opts.UseRegisterSizedBitfieldAccess = Args.hasArg( 512 OPT_fuse_register_sized_bitfield_access); 513 Opts.RelaxedAliasing = Args.hasArg(OPT_relaxed_aliasing); 514 Opts.StructPathTBAA = !Args.hasArg(OPT_no_struct_path_tbaa); 515 Opts.DwarfDebugFlags = Args.getLastArgValue(OPT_dwarf_debug_flags); 516 Opts.MergeAllConstants = !Args.hasArg(OPT_fno_merge_all_constants); 517 Opts.NoCommon = Args.hasArg(OPT_fno_common); 518 Opts.NoImplicitFloat = Args.hasArg(OPT_no_implicit_float); 519 Opts.OptimizeSize = getOptimizationLevelSize(Args); 520 Opts.SimplifyLibCalls = !(Args.hasArg(OPT_fno_builtin) || 521 Args.hasArg(OPT_ffreestanding)); 522 if (Opts.SimplifyLibCalls) 523 getAllNoBuiltinFuncValues(Args, Opts.NoBuiltinFuncs); 524 Opts.UnrollLoops = 525 Args.hasFlag(OPT_funroll_loops, OPT_fno_unroll_loops, 526 (Opts.OptimizationLevel > 1)); 527 Opts.RerollLoops = Args.hasArg(OPT_freroll_loops); 528 529 Opts.DisableIntegratedAS = Args.hasArg(OPT_fno_integrated_as); 530 Opts.Autolink = !Args.hasArg(OPT_fno_autolink); 531 Opts.SampleProfileFile = Args.getLastArgValue(OPT_fprofile_sample_use_EQ); 532 533 setPGOInstrumentor(Opts, Args, Diags); 534 Opts.InstrProfileOutput = 535 Args.getLastArgValue(OPT_fprofile_instrument_path_EQ); 536 Opts.ProfileInstrumentUsePath = 537 Args.getLastArgValue(OPT_fprofile_instrument_use_path_EQ); 538 if (!Opts.ProfileInstrumentUsePath.empty()) 539 setPGOUseInstrumentor(Opts, Opts.ProfileInstrumentUsePath); 540 541 Opts.CoverageMapping = 542 Args.hasFlag(OPT_fcoverage_mapping, OPT_fno_coverage_mapping, false); 543 Opts.DumpCoverageMapping = Args.hasArg(OPT_dump_coverage_mapping); 544 Opts.AsmVerbose = Args.hasArg(OPT_masm_verbose); 545 Opts.AssumeSaneOperatorNew = !Args.hasArg(OPT_fno_assume_sane_operator_new); 546 Opts.ObjCAutoRefCountExceptions = Args.hasArg(OPT_fobjc_arc_exceptions); 547 Opts.CXAAtExit = !Args.hasArg(OPT_fno_use_cxa_atexit); 548 Opts.CXXCtorDtorAliases = Args.hasArg(OPT_mconstructor_aliases); 549 Opts.CodeModel = getCodeModel(Args, Diags); 550 Opts.DebugPass = Args.getLastArgValue(OPT_mdebug_pass); 551 Opts.DisableFPElim = 552 (Args.hasArg(OPT_mdisable_fp_elim) || Args.hasArg(OPT_pg)); 553 Opts.DisableFree = Args.hasArg(OPT_disable_free); 554 Opts.DiscardValueNames = Args.hasArg(OPT_discard_value_names); 555 Opts.DisableTailCalls = Args.hasArg(OPT_mdisable_tail_calls); 556 Opts.FloatABI = Args.getLastArgValue(OPT_mfloat_abi); 557 Opts.LessPreciseFPMAD = Args.hasArg(OPT_cl_mad_enable); 558 Opts.LimitFloatPrecision = Args.getLastArgValue(OPT_mlimit_float_precision); 559 Opts.NoInfsFPMath = (Args.hasArg(OPT_menable_no_infinities) || 560 Args.hasArg(OPT_cl_finite_math_only) || 561 Args.hasArg(OPT_cl_fast_relaxed_math)); 562 Opts.NoNaNsFPMath = (Args.hasArg(OPT_menable_no_nans) || 563 Args.hasArg(OPT_cl_unsafe_math_optimizations) || 564 Args.hasArg(OPT_cl_finite_math_only) || 565 Args.hasArg(OPT_cl_fast_relaxed_math)); 566 Opts.NoSignedZeros = Args.hasArg(OPT_fno_signed_zeros); 567 Opts.ReciprocalMath = Args.hasArg(OPT_freciprocal_math); 568 Opts.NoZeroInitializedInBSS = Args.hasArg(OPT_mno_zero_initialized_in_bss); 569 Opts.BackendOptions = Args.getAllArgValues(OPT_backend_option); 570 Opts.NumRegisterParameters = getLastArgIntValue(Args, OPT_mregparm, 0, Diags); 571 Opts.NoExecStack = Args.hasArg(OPT_mno_exec_stack); 572 Opts.FatalWarnings = Args.hasArg(OPT_massembler_fatal_warnings); 573 Opts.EnableSegmentedStacks = Args.hasArg(OPT_split_stacks); 574 Opts.RelaxAll = Args.hasArg(OPT_mrelax_all); 575 Opts.IncrementalLinkerCompatible = 576 Args.hasArg(OPT_mincremental_linker_compatible); 577 Opts.OmitLeafFramePointer = Args.hasArg(OPT_momit_leaf_frame_pointer); 578 Opts.SaveTempLabels = Args.hasArg(OPT_msave_temp_labels); 579 Opts.NoDwarfDirectoryAsm = Args.hasArg(OPT_fno_dwarf_directory_asm); 580 Opts.SoftFloat = Args.hasArg(OPT_msoft_float); 581 Opts.StrictEnums = Args.hasArg(OPT_fstrict_enums); 582 Opts.StrictVTablePointers = Args.hasArg(OPT_fstrict_vtable_pointers); 583 Opts.UnsafeFPMath = Args.hasArg(OPT_menable_unsafe_fp_math) || 584 Args.hasArg(OPT_cl_unsafe_math_optimizations) || 585 Args.hasArg(OPT_cl_fast_relaxed_math); 586 Opts.UnwindTables = Args.hasArg(OPT_munwind_tables); 587 Opts.RelocationModel = Args.getLastArgValue(OPT_mrelocation_model, "pic"); 588 Opts.ThreadModel = Args.getLastArgValue(OPT_mthread_model, "posix"); 589 if (Opts.ThreadModel != "posix" && Opts.ThreadModel != "single") 590 Diags.Report(diag::err_drv_invalid_value) 591 << Args.getLastArg(OPT_mthread_model)->getAsString(Args) 592 << Opts.ThreadModel; 593 Opts.TrapFuncName = Args.getLastArgValue(OPT_ftrap_function_EQ); 594 Opts.UseInitArray = Args.hasArg(OPT_fuse_init_array); 595 596 Opts.FunctionSections = Args.hasFlag(OPT_ffunction_sections, 597 OPT_fno_function_sections, false); 598 Opts.DataSections = Args.hasFlag(OPT_fdata_sections, 599 OPT_fno_data_sections, false); 600 Opts.UniqueSectionNames = Args.hasFlag(OPT_funique_section_names, 601 OPT_fno_unique_section_names, true); 602 603 Opts.MergeFunctions = Args.hasArg(OPT_fmerge_functions); 604 605 Opts.NoUseJumpTables = Args.hasArg(OPT_fno_jump_tables); 606 607 Opts.PrepareForLTO = Args.hasArg(OPT_flto, OPT_flto_EQ); 608 const Arg *A = Args.getLastArg(OPT_flto, OPT_flto_EQ); 609 Opts.EmitSummaryIndex = A && A->containsValue("thin"); 610 if (Arg *A = Args.getLastArg(OPT_fthinlto_index_EQ)) { 611 if (IK != IK_LLVM_IR) 612 Diags.Report(diag::err_drv_argument_only_allowed_with) 613 << A->getAsString(Args) << "-x ir"; 614 Opts.ThinLTOIndexFile = Args.getLastArgValue(OPT_fthinlto_index_EQ); 615 } 616 617 Opts.MSVolatile = Args.hasArg(OPT_fms_volatile); 618 619 Opts.VectorizeBB = Args.hasArg(OPT_vectorize_slp_aggressive); 620 Opts.VectorizeLoop = Args.hasArg(OPT_vectorize_loops); 621 Opts.VectorizeSLP = Args.hasArg(OPT_vectorize_slp); 622 623 Opts.MainFileName = Args.getLastArgValue(OPT_main_file_name); 624 Opts.VerifyModule = !Args.hasArg(OPT_disable_llvm_verifier); 625 626 Opts.DisableGCov = Args.hasArg(OPT_test_coverage); 627 Opts.EmitGcovArcs = Args.hasArg(OPT_femit_coverage_data); 628 Opts.EmitGcovNotes = Args.hasArg(OPT_femit_coverage_notes); 629 if (Opts.EmitGcovArcs || Opts.EmitGcovNotes) { 630 Opts.CoverageFile = Args.getLastArgValue(OPT_coverage_file); 631 Opts.CoverageExtraChecksum = Args.hasArg(OPT_coverage_cfg_checksum); 632 Opts.CoverageNoFunctionNamesInData = 633 Args.hasArg(OPT_coverage_no_function_names_in_data); 634 Opts.CoverageExitBlockBeforeBody = 635 Args.hasArg(OPT_coverage_exit_block_before_body); 636 if (Args.hasArg(OPT_coverage_version_EQ)) { 637 StringRef CoverageVersion = Args.getLastArgValue(OPT_coverage_version_EQ); 638 if (CoverageVersion.size() != 4) { 639 Diags.Report(diag::err_drv_invalid_value) 640 << Args.getLastArg(OPT_coverage_version_EQ)->getAsString(Args) 641 << CoverageVersion; 642 } else { 643 memcpy(Opts.CoverageVersion, CoverageVersion.data(), 4); 644 } 645 } 646 } 647 // Handle -fembed-bitcode option. 648 if (Arg *A = Args.getLastArg(OPT_fembed_bitcode_EQ)) { 649 StringRef Name = A->getValue(); 650 unsigned Model = llvm::StringSwitch<unsigned>(Name) 651 .Case("off", CodeGenOptions::Embed_Off) 652 .Case("all", CodeGenOptions::Embed_All) 653 .Case("bitcode", CodeGenOptions::Embed_Bitcode) 654 .Case("marker", CodeGenOptions::Embed_Marker) 655 .Default(~0U); 656 if (Model == ~0U) { 657 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Name; 658 Success = false; 659 } else 660 Opts.setEmbedBitcode( 661 static_cast<CodeGenOptions::EmbedBitcodeKind>(Model)); 662 } 663 // FIXME: For backend options that are not yet recorded as function 664 // attributes in the IR, keep track of them so we can embed them in a 665 // separate data section and use them when building the bitcode. 666 if (Opts.getEmbedBitcode() == CodeGenOptions::Embed_All) { 667 for (const auto &A : Args) { 668 // Do not encode output and input. 669 if (A->getOption().getID() == options::OPT_o || 670 A->getOption().getID() == options::OPT_INPUT || 671 A->getOption().getID() == options::OPT_x || 672 A->getOption().getID() == options::OPT_fembed_bitcode || 673 (A->getOption().getGroup().isValid() && 674 A->getOption().getGroup().getID() == options::OPT_W_Group)) 675 continue; 676 ArgStringList ASL; 677 A->render(Args, ASL); 678 for (const auto &arg : ASL) { 679 StringRef ArgStr(arg); 680 Opts.CmdArgs.insert(Opts.CmdArgs.end(), ArgStr.begin(), ArgStr.end()); 681 // using \00 to seperate each commandline options. 682 Opts.CmdArgs.push_back('\0'); 683 } 684 } 685 } 686 687 Opts.InstrumentFunctions = Args.hasArg(OPT_finstrument_functions); 688 Opts.InstrumentForProfiling = Args.hasArg(OPT_pg); 689 Opts.EmitOpenCLArgMetadata = Args.hasArg(OPT_cl_kernel_arg_info); 690 Opts.CompressDebugSections = Args.hasArg(OPT_compress_debug_sections); 691 Opts.RelaxELFRelocations = Args.hasArg(OPT_mrelax_relocations); 692 Opts.DebugCompilationDir = Args.getLastArgValue(OPT_fdebug_compilation_dir); 693 for (auto A : Args.filtered(OPT_mlink_bitcode_file, OPT_mlink_cuda_bitcode)) { 694 unsigned LinkFlags = llvm::Linker::Flags::None; 695 if (A->getOption().matches(OPT_mlink_cuda_bitcode)) 696 LinkFlags = llvm::Linker::Flags::LinkOnlyNeeded | 697 llvm::Linker::Flags::InternalizeLinkedSymbols; 698 Opts.LinkBitcodeFiles.push_back(std::make_pair(LinkFlags, A->getValue())); 699 } 700 Opts.SanitizeCoverageType = 701 getLastArgIntValue(Args, OPT_fsanitize_coverage_type, 0, Diags); 702 Opts.SanitizeCoverageIndirectCalls = 703 Args.hasArg(OPT_fsanitize_coverage_indirect_calls); 704 Opts.SanitizeCoverageTraceBB = Args.hasArg(OPT_fsanitize_coverage_trace_bb); 705 Opts.SanitizeCoverageTraceCmp = Args.hasArg(OPT_fsanitize_coverage_trace_cmp); 706 Opts.SanitizeCoverage8bitCounters = 707 Args.hasArg(OPT_fsanitize_coverage_8bit_counters); 708 Opts.SanitizeCoverageTracePC = Args.hasArg(OPT_fsanitize_coverage_trace_pc); 709 Opts.SanitizeMemoryTrackOrigins = 710 getLastArgIntValue(Args, OPT_fsanitize_memory_track_origins_EQ, 0, Diags); 711 Opts.SanitizeMemoryUseAfterDtor = 712 Args.hasArg(OPT_fsanitize_memory_use_after_dtor); 713 Opts.SanitizeCfiCrossDso = Args.hasArg(OPT_fsanitize_cfi_cross_dso); 714 Opts.SanitizeStats = Args.hasArg(OPT_fsanitize_stats); 715 Opts.SanitizeAddressUseAfterScope = 716 Args.hasArg(OPT_fsanitize_address_use_after_scope); 717 Opts.SSPBufferSize = 718 getLastArgIntValue(Args, OPT_stack_protector_buffer_size, 8, Diags); 719 Opts.StackRealignment = Args.hasArg(OPT_mstackrealign); 720 if (Arg *A = Args.getLastArg(OPT_mstack_alignment)) { 721 StringRef Val = A->getValue(); 722 unsigned StackAlignment = Opts.StackAlignment; 723 Val.getAsInteger(10, StackAlignment); 724 Opts.StackAlignment = StackAlignment; 725 } 726 727 if (Arg *A = Args.getLastArg(OPT_mstack_probe_size)) { 728 StringRef Val = A->getValue(); 729 unsigned StackProbeSize = Opts.StackProbeSize; 730 Val.getAsInteger(0, StackProbeSize); 731 Opts.StackProbeSize = StackProbeSize; 732 } 733 734 if (Arg *A = Args.getLastArg(OPT_fobjc_dispatch_method_EQ)) { 735 StringRef Name = A->getValue(); 736 unsigned Method = llvm::StringSwitch<unsigned>(Name) 737 .Case("legacy", CodeGenOptions::Legacy) 738 .Case("non-legacy", CodeGenOptions::NonLegacy) 739 .Case("mixed", CodeGenOptions::Mixed) 740 .Default(~0U); 741 if (Method == ~0U) { 742 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Name; 743 Success = false; 744 } else { 745 Opts.setObjCDispatchMethod( 746 static_cast<CodeGenOptions::ObjCDispatchMethodKind>(Method)); 747 } 748 } 749 750 Opts.EmulatedTLS = 751 Args.hasFlag(OPT_femulated_tls, OPT_fno_emulated_tls, false); 752 753 if (Arg *A = Args.getLastArg(OPT_ftlsmodel_EQ)) { 754 StringRef Name = A->getValue(); 755 unsigned Model = llvm::StringSwitch<unsigned>(Name) 756 .Case("global-dynamic", CodeGenOptions::GeneralDynamicTLSModel) 757 .Case("local-dynamic", CodeGenOptions::LocalDynamicTLSModel) 758 .Case("initial-exec", CodeGenOptions::InitialExecTLSModel) 759 .Case("local-exec", CodeGenOptions::LocalExecTLSModel) 760 .Default(~0U); 761 if (Model == ~0U) { 762 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Name; 763 Success = false; 764 } else { 765 Opts.setDefaultTLSModel(static_cast<CodeGenOptions::TLSModel>(Model)); 766 } 767 } 768 769 if (Arg *A = Args.getLastArg(OPT_ffp_contract)) { 770 StringRef Val = A->getValue(); 771 if (Val == "fast") 772 Opts.setFPContractMode(CodeGenOptions::FPC_Fast); 773 else if (Val == "on") 774 Opts.setFPContractMode(CodeGenOptions::FPC_On); 775 else if (Val == "off") 776 Opts.setFPContractMode(CodeGenOptions::FPC_Off); 777 else 778 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Val; 779 } 780 781 if (Arg *A = Args.getLastArg(OPT_fpcc_struct_return, OPT_freg_struct_return)) { 782 if (A->getOption().matches(OPT_fpcc_struct_return)) { 783 Opts.setStructReturnConvention(CodeGenOptions::SRCK_OnStack); 784 } else { 785 assert(A->getOption().matches(OPT_freg_struct_return)); 786 Opts.setStructReturnConvention(CodeGenOptions::SRCK_InRegs); 787 } 788 } 789 790 Opts.DependentLibraries = Args.getAllArgValues(OPT_dependent_lib); 791 Opts.LinkerOptions = Args.getAllArgValues(OPT_linker_option); 792 bool NeedLocTracking = false; 793 794 if (Arg *A = Args.getLastArg(OPT_Rpass_EQ)) { 795 Opts.OptimizationRemarkPattern = 796 GenerateOptimizationRemarkRegex(Diags, Args, A); 797 NeedLocTracking = true; 798 } 799 800 if (Arg *A = Args.getLastArg(OPT_Rpass_missed_EQ)) { 801 Opts.OptimizationRemarkMissedPattern = 802 GenerateOptimizationRemarkRegex(Diags, Args, A); 803 NeedLocTracking = true; 804 } 805 806 if (Arg *A = Args.getLastArg(OPT_Rpass_analysis_EQ)) { 807 Opts.OptimizationRemarkAnalysisPattern = 808 GenerateOptimizationRemarkRegex(Diags, Args, A); 809 NeedLocTracking = true; 810 } 811 812 // If the user requested to use a sample profile for PGO, then the 813 // backend will need to track source location information so the profile 814 // can be incorporated into the IR. 815 if (!Opts.SampleProfileFile.empty()) 816 NeedLocTracking = true; 817 818 // If the user requested a flag that requires source locations available in 819 // the backend, make sure that the backend tracks source location information. 820 if (NeedLocTracking && Opts.getDebugInfo() == codegenoptions::NoDebugInfo) 821 Opts.setDebugInfo(codegenoptions::LocTrackingOnly); 822 823 Opts.RewriteMapFiles = Args.getAllArgValues(OPT_frewrite_map_file); 824 825 // Parse -fsanitize-recover= arguments. 826 // FIXME: Report unrecoverable sanitizers incorrectly specified here. 827 parseSanitizerKinds("-fsanitize-recover=", 828 Args.getAllArgValues(OPT_fsanitize_recover_EQ), Diags, 829 Opts.SanitizeRecover); 830 parseSanitizerKinds("-fsanitize-trap=", 831 Args.getAllArgValues(OPT_fsanitize_trap_EQ), Diags, 832 Opts.SanitizeTrap); 833 834 Opts.CudaGpuBinaryFileNames = 835 Args.getAllArgValues(OPT_fcuda_include_gpubinary); 836 837 Opts.Backchain = Args.hasArg(OPT_mbackchain); 838 839 Opts.EmitCheckPathComponentsToStrip = getLastArgIntValue( 840 Args, OPT_fsanitize_undefined_strip_path_components_EQ, 0, Diags); 841 842 return Success; 843 } 844 845 static void ParseDependencyOutputArgs(DependencyOutputOptions &Opts, 846 ArgList &Args) { 847 using namespace options; 848 Opts.OutputFile = Args.getLastArgValue(OPT_dependency_file); 849 Opts.Targets = Args.getAllArgValues(OPT_MT); 850 Opts.IncludeSystemHeaders = Args.hasArg(OPT_sys_header_deps); 851 Opts.IncludeModuleFiles = Args.hasArg(OPT_module_file_deps); 852 Opts.UsePhonyTargets = Args.hasArg(OPT_MP); 853 Opts.ShowHeaderIncludes = Args.hasArg(OPT_H); 854 Opts.HeaderIncludeOutputFile = Args.getLastArgValue(OPT_header_include_file); 855 Opts.AddMissingHeaderDeps = Args.hasArg(OPT_MG); 856 Opts.PrintShowIncludes = Args.hasArg(OPT_show_includes); 857 Opts.DOTOutputFile = Args.getLastArgValue(OPT_dependency_dot); 858 Opts.ModuleDependencyOutputDir = 859 Args.getLastArgValue(OPT_module_dependency_dir); 860 if (Args.hasArg(OPT_MV)) 861 Opts.OutputFormat = DependencyOutputFormat::NMake; 862 // Add sanitizer blacklists as extra dependencies. 863 // They won't be discovered by the regular preprocessor, so 864 // we let make / ninja to know about this implicit dependency. 865 Opts.ExtraDeps = Args.getAllArgValues(OPT_fdepfile_entry); 866 auto ModuleFiles = Args.getAllArgValues(OPT_fmodule_file); 867 Opts.ExtraDeps.insert(Opts.ExtraDeps.end(), ModuleFiles.begin(), 868 ModuleFiles.end()); 869 } 870 871 static bool parseShowColorsArgs(const ArgList &Args, bool DefaultColor) { 872 // Color diagnostics default to auto ("on" if terminal supports) in the driver 873 // but default to off in cc1, needing an explicit OPT_fdiagnostics_color. 874 // Support both clang's -f[no-]color-diagnostics and gcc's 875 // -f[no-]diagnostics-colors[=never|always|auto]. 876 enum { 877 Colors_On, 878 Colors_Off, 879 Colors_Auto 880 } ShowColors = DefaultColor ? Colors_Auto : Colors_Off; 881 for (Arg *A : Args) { 882 const Option &O = A->getOption(); 883 if (!O.matches(options::OPT_fcolor_diagnostics) && 884 !O.matches(options::OPT_fdiagnostics_color) && 885 !O.matches(options::OPT_fno_color_diagnostics) && 886 !O.matches(options::OPT_fno_diagnostics_color) && 887 !O.matches(options::OPT_fdiagnostics_color_EQ)) 888 continue; 889 890 if (O.matches(options::OPT_fcolor_diagnostics) || 891 O.matches(options::OPT_fdiagnostics_color)) { 892 ShowColors = Colors_On; 893 } else if (O.matches(options::OPT_fno_color_diagnostics) || 894 O.matches(options::OPT_fno_diagnostics_color)) { 895 ShowColors = Colors_Off; 896 } else { 897 assert(O.matches(options::OPT_fdiagnostics_color_EQ)); 898 StringRef Value(A->getValue()); 899 if (Value == "always") 900 ShowColors = Colors_On; 901 else if (Value == "never") 902 ShowColors = Colors_Off; 903 else if (Value == "auto") 904 ShowColors = Colors_Auto; 905 } 906 } 907 if (ShowColors == Colors_On || 908 (ShowColors == Colors_Auto && llvm::sys::Process::StandardErrHasColors())) 909 return true; 910 return false; 911 } 912 913 bool clang::ParseDiagnosticArgs(DiagnosticOptions &Opts, ArgList &Args, 914 DiagnosticsEngine *Diags, 915 bool DefaultDiagColor) { 916 using namespace options; 917 bool Success = true; 918 919 Opts.DiagnosticLogFile = Args.getLastArgValue(OPT_diagnostic_log_file); 920 if (Arg *A = 921 Args.getLastArg(OPT_diagnostic_serialized_file, OPT__serialize_diags)) 922 Opts.DiagnosticSerializationFile = A->getValue(); 923 Opts.IgnoreWarnings = Args.hasArg(OPT_w); 924 Opts.NoRewriteMacros = Args.hasArg(OPT_Wno_rewrite_macros); 925 Opts.Pedantic = Args.hasArg(OPT_pedantic); 926 Opts.PedanticErrors = Args.hasArg(OPT_pedantic_errors); 927 Opts.ShowCarets = !Args.hasArg(OPT_fno_caret_diagnostics); 928 Opts.ShowColors = parseShowColorsArgs(Args, DefaultDiagColor); 929 Opts.ShowColumn = Args.hasFlag(OPT_fshow_column, 930 OPT_fno_show_column, 931 /*Default=*/true); 932 Opts.ShowFixits = !Args.hasArg(OPT_fno_diagnostics_fixit_info); 933 Opts.ShowLocation = !Args.hasArg(OPT_fno_show_source_location); 934 Opts.ShowOptionNames = Args.hasArg(OPT_fdiagnostics_show_option); 935 936 llvm::sys::Process::UseANSIEscapeCodes(Args.hasArg(OPT_fansi_escape_codes)); 937 938 // Default behavior is to not to show note include stacks. 939 Opts.ShowNoteIncludeStack = false; 940 if (Arg *A = Args.getLastArg(OPT_fdiagnostics_show_note_include_stack, 941 OPT_fno_diagnostics_show_note_include_stack)) 942 if (A->getOption().matches(OPT_fdiagnostics_show_note_include_stack)) 943 Opts.ShowNoteIncludeStack = true; 944 945 StringRef ShowOverloads = 946 Args.getLastArgValue(OPT_fshow_overloads_EQ, "all"); 947 if (ShowOverloads == "best") 948 Opts.setShowOverloads(Ovl_Best); 949 else if (ShowOverloads == "all") 950 Opts.setShowOverloads(Ovl_All); 951 else { 952 Success = false; 953 if (Diags) 954 Diags->Report(diag::err_drv_invalid_value) 955 << Args.getLastArg(OPT_fshow_overloads_EQ)->getAsString(Args) 956 << ShowOverloads; 957 } 958 959 StringRef ShowCategory = 960 Args.getLastArgValue(OPT_fdiagnostics_show_category, "none"); 961 if (ShowCategory == "none") 962 Opts.ShowCategories = 0; 963 else if (ShowCategory == "id") 964 Opts.ShowCategories = 1; 965 else if (ShowCategory == "name") 966 Opts.ShowCategories = 2; 967 else { 968 Success = false; 969 if (Diags) 970 Diags->Report(diag::err_drv_invalid_value) 971 << Args.getLastArg(OPT_fdiagnostics_show_category)->getAsString(Args) 972 << ShowCategory; 973 } 974 975 StringRef Format = 976 Args.getLastArgValue(OPT_fdiagnostics_format, "clang"); 977 if (Format == "clang") 978 Opts.setFormat(DiagnosticOptions::Clang); 979 else if (Format == "msvc") 980 Opts.setFormat(DiagnosticOptions::MSVC); 981 else if (Format == "msvc-fallback") { 982 Opts.setFormat(DiagnosticOptions::MSVC); 983 Opts.CLFallbackMode = true; 984 } else if (Format == "vi") 985 Opts.setFormat(DiagnosticOptions::Vi); 986 else { 987 Success = false; 988 if (Diags) 989 Diags->Report(diag::err_drv_invalid_value) 990 << Args.getLastArg(OPT_fdiagnostics_format)->getAsString(Args) 991 << Format; 992 } 993 994 Opts.ShowSourceRanges = Args.hasArg(OPT_fdiagnostics_print_source_range_info); 995 Opts.ShowParseableFixits = Args.hasArg(OPT_fdiagnostics_parseable_fixits); 996 Opts.ShowPresumedLoc = !Args.hasArg(OPT_fno_diagnostics_use_presumed_location); 997 Opts.VerifyDiagnostics = Args.hasArg(OPT_verify); 998 DiagnosticLevelMask DiagMask = DiagnosticLevelMask::None; 999 Success &= parseDiagnosticLevelMask("-verify-ignore-unexpected=", 1000 Args.getAllArgValues(OPT_verify_ignore_unexpected_EQ), 1001 Diags, DiagMask); 1002 if (Args.hasArg(OPT_verify_ignore_unexpected)) 1003 DiagMask = DiagnosticLevelMask::All; 1004 Opts.setVerifyIgnoreUnexpected(DiagMask); 1005 Opts.ElideType = !Args.hasArg(OPT_fno_elide_type); 1006 Opts.ShowTemplateTree = Args.hasArg(OPT_fdiagnostics_show_template_tree); 1007 Opts.ErrorLimit = getLastArgIntValue(Args, OPT_ferror_limit, 0, Diags); 1008 Opts.MacroBacktraceLimit = 1009 getLastArgIntValue(Args, OPT_fmacro_backtrace_limit, 1010 DiagnosticOptions::DefaultMacroBacktraceLimit, Diags); 1011 Opts.TemplateBacktraceLimit = getLastArgIntValue( 1012 Args, OPT_ftemplate_backtrace_limit, 1013 DiagnosticOptions::DefaultTemplateBacktraceLimit, Diags); 1014 Opts.ConstexprBacktraceLimit = getLastArgIntValue( 1015 Args, OPT_fconstexpr_backtrace_limit, 1016 DiagnosticOptions::DefaultConstexprBacktraceLimit, Diags); 1017 Opts.SpellCheckingLimit = getLastArgIntValue( 1018 Args, OPT_fspell_checking_limit, 1019 DiagnosticOptions::DefaultSpellCheckingLimit, Diags); 1020 Opts.TabStop = getLastArgIntValue(Args, OPT_ftabstop, 1021 DiagnosticOptions::DefaultTabStop, Diags); 1022 if (Opts.TabStop == 0 || Opts.TabStop > DiagnosticOptions::MaxTabStop) { 1023 Opts.TabStop = DiagnosticOptions::DefaultTabStop; 1024 if (Diags) 1025 Diags->Report(diag::warn_ignoring_ftabstop_value) 1026 << Opts.TabStop << DiagnosticOptions::DefaultTabStop; 1027 } 1028 Opts.MessageLength = getLastArgIntValue(Args, OPT_fmessage_length, 0, Diags); 1029 addDiagnosticArgs(Args, OPT_W_Group, OPT_W_value_Group, Opts.Warnings); 1030 addDiagnosticArgs(Args, OPT_R_Group, OPT_R_value_Group, Opts.Remarks); 1031 1032 return Success; 1033 } 1034 1035 static void ParseFileSystemArgs(FileSystemOptions &Opts, ArgList &Args) { 1036 Opts.WorkingDir = Args.getLastArgValue(OPT_working_directory); 1037 } 1038 1039 /// Parse the argument to the -ftest-module-file-extension 1040 /// command-line argument. 1041 /// 1042 /// \returns true on error, false on success. 1043 static bool parseTestModuleFileExtensionArg(StringRef Arg, 1044 std::string &BlockName, 1045 unsigned &MajorVersion, 1046 unsigned &MinorVersion, 1047 bool &Hashed, 1048 std::string &UserInfo) { 1049 SmallVector<StringRef, 5> Args; 1050 Arg.split(Args, ':', 5); 1051 if (Args.size() < 5) 1052 return true; 1053 1054 BlockName = Args[0]; 1055 if (Args[1].getAsInteger(10, MajorVersion)) return true; 1056 if (Args[2].getAsInteger(10, MinorVersion)) return true; 1057 if (Args[3].getAsInteger(2, Hashed)) return true; 1058 if (Args.size() > 4) 1059 UserInfo = Args[4]; 1060 return false; 1061 } 1062 1063 static InputKind ParseFrontendArgs(FrontendOptions &Opts, ArgList &Args, 1064 DiagnosticsEngine &Diags) { 1065 using namespace options; 1066 Opts.ProgramAction = frontend::ParseSyntaxOnly; 1067 if (const Arg *A = Args.getLastArg(OPT_Action_Group)) { 1068 switch (A->getOption().getID()) { 1069 default: 1070 llvm_unreachable("Invalid option in group!"); 1071 case OPT_ast_list: 1072 Opts.ProgramAction = frontend::ASTDeclList; break; 1073 case OPT_ast_dump: 1074 case OPT_ast_dump_lookups: 1075 Opts.ProgramAction = frontend::ASTDump; break; 1076 case OPT_ast_print: 1077 Opts.ProgramAction = frontend::ASTPrint; break; 1078 case OPT_ast_view: 1079 Opts.ProgramAction = frontend::ASTView; break; 1080 case OPT_dump_raw_tokens: 1081 Opts.ProgramAction = frontend::DumpRawTokens; break; 1082 case OPT_dump_tokens: 1083 Opts.ProgramAction = frontend::DumpTokens; break; 1084 case OPT_S: 1085 Opts.ProgramAction = frontend::EmitAssembly; break; 1086 case OPT_emit_llvm_bc: 1087 Opts.ProgramAction = frontend::EmitBC; break; 1088 case OPT_emit_html: 1089 Opts.ProgramAction = frontend::EmitHTML; break; 1090 case OPT_emit_llvm: 1091 Opts.ProgramAction = frontend::EmitLLVM; break; 1092 case OPT_emit_llvm_only: 1093 Opts.ProgramAction = frontend::EmitLLVMOnly; break; 1094 case OPT_emit_codegen_only: 1095 Opts.ProgramAction = frontend::EmitCodeGenOnly; break; 1096 case OPT_emit_obj: 1097 Opts.ProgramAction = frontend::EmitObj; break; 1098 case OPT_fixit_EQ: 1099 Opts.FixItSuffix = A->getValue(); 1100 // fall-through! 1101 case OPT_fixit: 1102 Opts.ProgramAction = frontend::FixIt; break; 1103 case OPT_emit_module: 1104 Opts.ProgramAction = frontend::GenerateModule; break; 1105 case OPT_emit_pch: 1106 Opts.ProgramAction = frontend::GeneratePCH; break; 1107 case OPT_emit_pth: 1108 Opts.ProgramAction = frontend::GeneratePTH; break; 1109 case OPT_init_only: 1110 Opts.ProgramAction = frontend::InitOnly; break; 1111 case OPT_fsyntax_only: 1112 Opts.ProgramAction = frontend::ParseSyntaxOnly; break; 1113 case OPT_module_file_info: 1114 Opts.ProgramAction = frontend::ModuleFileInfo; break; 1115 case OPT_verify_pch: 1116 Opts.ProgramAction = frontend::VerifyPCH; break; 1117 case OPT_print_decl_contexts: 1118 Opts.ProgramAction = frontend::PrintDeclContext; break; 1119 case OPT_print_preamble: 1120 Opts.ProgramAction = frontend::PrintPreamble; break; 1121 case OPT_E: 1122 Opts.ProgramAction = frontend::PrintPreprocessedInput; break; 1123 case OPT_rewrite_macros: 1124 Opts.ProgramAction = frontend::RewriteMacros; break; 1125 case OPT_rewrite_objc: 1126 Opts.ProgramAction = frontend::RewriteObjC; break; 1127 case OPT_rewrite_test: 1128 Opts.ProgramAction = frontend::RewriteTest; break; 1129 case OPT_analyze: 1130 Opts.ProgramAction = frontend::RunAnalysis; break; 1131 case OPT_migrate: 1132 Opts.ProgramAction = frontend::MigrateSource; break; 1133 case OPT_Eonly: 1134 Opts.ProgramAction = frontend::RunPreprocessorOnly; break; 1135 } 1136 } 1137 1138 if (const Arg* A = Args.getLastArg(OPT_plugin)) { 1139 Opts.Plugins.emplace_back(A->getValue(0)); 1140 Opts.ProgramAction = frontend::PluginAction; 1141 Opts.ActionName = A->getValue(); 1142 } 1143 Opts.AddPluginActions = Args.getAllArgValues(OPT_add_plugin); 1144 for (const Arg *AA : Args.filtered(OPT_plugin_arg)) 1145 Opts.PluginArgs[AA->getValue(0)].emplace_back(AA->getValue(1)); 1146 1147 for (const std::string &Arg : 1148 Args.getAllArgValues(OPT_ftest_module_file_extension_EQ)) { 1149 std::string BlockName; 1150 unsigned MajorVersion; 1151 unsigned MinorVersion; 1152 bool Hashed; 1153 std::string UserInfo; 1154 if (parseTestModuleFileExtensionArg(Arg, BlockName, MajorVersion, 1155 MinorVersion, Hashed, UserInfo)) { 1156 Diags.Report(diag::err_test_module_file_extension_format) << Arg; 1157 1158 continue; 1159 } 1160 1161 // Add the testing module file extension. 1162 Opts.ModuleFileExtensions.push_back( 1163 new TestModuleFileExtension(BlockName, MajorVersion, MinorVersion, 1164 Hashed, UserInfo)); 1165 } 1166 1167 if (const Arg *A = Args.getLastArg(OPT_code_completion_at)) { 1168 Opts.CodeCompletionAt = 1169 ParsedSourceLocation::FromString(A->getValue()); 1170 if (Opts.CodeCompletionAt.FileName.empty()) 1171 Diags.Report(diag::err_drv_invalid_value) 1172 << A->getAsString(Args) << A->getValue(); 1173 } 1174 Opts.DisableFree = Args.hasArg(OPT_disable_free); 1175 1176 Opts.OutputFile = Args.getLastArgValue(OPT_o); 1177 Opts.Plugins = Args.getAllArgValues(OPT_load); 1178 Opts.RelocatablePCH = Args.hasArg(OPT_relocatable_pch); 1179 Opts.ShowHelp = Args.hasArg(OPT_help); 1180 Opts.ShowStats = Args.hasArg(OPT_print_stats); 1181 Opts.ShowTimers = Args.hasArg(OPT_ftime_report); 1182 Opts.ShowVersion = Args.hasArg(OPT_version); 1183 Opts.ASTMergeFiles = Args.getAllArgValues(OPT_ast_merge); 1184 Opts.LLVMArgs = Args.getAllArgValues(OPT_mllvm); 1185 Opts.FixWhatYouCan = Args.hasArg(OPT_fix_what_you_can); 1186 Opts.FixOnlyWarnings = Args.hasArg(OPT_fix_only_warnings); 1187 Opts.FixAndRecompile = Args.hasArg(OPT_fixit_recompile); 1188 Opts.FixToTemporaries = Args.hasArg(OPT_fixit_to_temp); 1189 Opts.ASTDumpDecls = Args.hasArg(OPT_ast_dump); 1190 Opts.ASTDumpFilter = Args.getLastArgValue(OPT_ast_dump_filter); 1191 Opts.ASTDumpLookups = Args.hasArg(OPT_ast_dump_lookups); 1192 Opts.UseGlobalModuleIndex = !Args.hasArg(OPT_fno_modules_global_index); 1193 Opts.GenerateGlobalModuleIndex = Opts.UseGlobalModuleIndex; 1194 Opts.ModuleMapFiles = Args.getAllArgValues(OPT_fmodule_map_file); 1195 Opts.ModuleFiles = Args.getAllArgValues(OPT_fmodule_file); 1196 Opts.ModulesEmbedFiles = Args.getAllArgValues(OPT_fmodules_embed_file_EQ); 1197 Opts.ModulesEmbedAllFiles = Args.hasArg(OPT_fmodules_embed_all_files); 1198 1199 Opts.CodeCompleteOpts.IncludeMacros 1200 = Args.hasArg(OPT_code_completion_macros); 1201 Opts.CodeCompleteOpts.IncludeCodePatterns 1202 = Args.hasArg(OPT_code_completion_patterns); 1203 Opts.CodeCompleteOpts.IncludeGlobals 1204 = !Args.hasArg(OPT_no_code_completion_globals); 1205 Opts.CodeCompleteOpts.IncludeBriefComments 1206 = Args.hasArg(OPT_code_completion_brief_comments); 1207 1208 Opts.OverrideRecordLayoutsFile 1209 = Args.getLastArgValue(OPT_foverride_record_layout_EQ); 1210 Opts.AuxTriple = 1211 llvm::Triple::normalize(Args.getLastArgValue(OPT_aux_triple)); 1212 Opts.FindPchSource = Args.getLastArgValue(OPT_find_pch_source_EQ); 1213 1214 if (const Arg *A = Args.getLastArg(OPT_arcmt_check, 1215 OPT_arcmt_modify, 1216 OPT_arcmt_migrate)) { 1217 switch (A->getOption().getID()) { 1218 default: 1219 llvm_unreachable("missed a case"); 1220 case OPT_arcmt_check: 1221 Opts.ARCMTAction = FrontendOptions::ARCMT_Check; 1222 break; 1223 case OPT_arcmt_modify: 1224 Opts.ARCMTAction = FrontendOptions::ARCMT_Modify; 1225 break; 1226 case OPT_arcmt_migrate: 1227 Opts.ARCMTAction = FrontendOptions::ARCMT_Migrate; 1228 break; 1229 } 1230 } 1231 Opts.MTMigrateDir = Args.getLastArgValue(OPT_mt_migrate_directory); 1232 Opts.ARCMTMigrateReportOut 1233 = Args.getLastArgValue(OPT_arcmt_migrate_report_output); 1234 Opts.ARCMTMigrateEmitARCErrors 1235 = Args.hasArg(OPT_arcmt_migrate_emit_arc_errors); 1236 1237 if (Args.hasArg(OPT_objcmt_migrate_literals)) 1238 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_Literals; 1239 if (Args.hasArg(OPT_objcmt_migrate_subscripting)) 1240 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_Subscripting; 1241 if (Args.hasArg(OPT_objcmt_migrate_property_dot_syntax)) 1242 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_PropertyDotSyntax; 1243 if (Args.hasArg(OPT_objcmt_migrate_property)) 1244 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_Property; 1245 if (Args.hasArg(OPT_objcmt_migrate_readonly_property)) 1246 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_ReadonlyProperty; 1247 if (Args.hasArg(OPT_objcmt_migrate_readwrite_property)) 1248 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_ReadwriteProperty; 1249 if (Args.hasArg(OPT_objcmt_migrate_annotation)) 1250 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_Annotation; 1251 if (Args.hasArg(OPT_objcmt_returns_innerpointer_property)) 1252 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_ReturnsInnerPointerProperty; 1253 if (Args.hasArg(OPT_objcmt_migrate_instancetype)) 1254 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_Instancetype; 1255 if (Args.hasArg(OPT_objcmt_migrate_nsmacros)) 1256 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_NsMacros; 1257 if (Args.hasArg(OPT_objcmt_migrate_protocol_conformance)) 1258 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_ProtocolConformance; 1259 if (Args.hasArg(OPT_objcmt_atomic_property)) 1260 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_AtomicProperty; 1261 if (Args.hasArg(OPT_objcmt_ns_nonatomic_iosonly)) 1262 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_NsAtomicIOSOnlyProperty; 1263 if (Args.hasArg(OPT_objcmt_migrate_designated_init)) 1264 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_DesignatedInitializer; 1265 if (Args.hasArg(OPT_objcmt_migrate_all)) 1266 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_MigrateDecls; 1267 1268 Opts.ObjCMTWhiteListPath = Args.getLastArgValue(OPT_objcmt_whitelist_dir_path); 1269 1270 if (Opts.ARCMTAction != FrontendOptions::ARCMT_None && 1271 Opts.ObjCMTAction != FrontendOptions::ObjCMT_None) { 1272 Diags.Report(diag::err_drv_argument_not_allowed_with) 1273 << "ARC migration" << "ObjC migration"; 1274 } 1275 1276 InputKind DashX = IK_None; 1277 if (const Arg *A = Args.getLastArg(OPT_x)) { 1278 DashX = llvm::StringSwitch<InputKind>(A->getValue()) 1279 .Case("c", IK_C) 1280 .Case("cl", IK_OpenCL) 1281 .Case("cuda", IK_CUDA) 1282 .Case("c++", IK_CXX) 1283 .Case("objective-c", IK_ObjC) 1284 .Case("objective-c++", IK_ObjCXX) 1285 .Case("cpp-output", IK_PreprocessedC) 1286 .Case("assembler-with-cpp", IK_Asm) 1287 .Case("c++-cpp-output", IK_PreprocessedCXX) 1288 .Case("cuda-cpp-output", IK_PreprocessedCuda) 1289 .Case("objective-c-cpp-output", IK_PreprocessedObjC) 1290 .Case("objc-cpp-output", IK_PreprocessedObjC) 1291 .Case("objective-c++-cpp-output", IK_PreprocessedObjCXX) 1292 .Case("objc++-cpp-output", IK_PreprocessedObjCXX) 1293 .Case("c-header", IK_C) 1294 .Case("cl-header", IK_OpenCL) 1295 .Case("objective-c-header", IK_ObjC) 1296 .Case("c++-header", IK_CXX) 1297 .Case("objective-c++-header", IK_ObjCXX) 1298 .Cases("ast", "pcm", IK_AST) 1299 .Case("ir", IK_LLVM_IR) 1300 .Case("renderscript", IK_RenderScript) 1301 .Default(IK_None); 1302 if (DashX == IK_None) 1303 Diags.Report(diag::err_drv_invalid_value) 1304 << A->getAsString(Args) << A->getValue(); 1305 } 1306 1307 // '-' is the default input if none is given. 1308 std::vector<std::string> Inputs = Args.getAllArgValues(OPT_INPUT); 1309 Opts.Inputs.clear(); 1310 if (Inputs.empty()) 1311 Inputs.push_back("-"); 1312 for (unsigned i = 0, e = Inputs.size(); i != e; ++i) { 1313 InputKind IK = DashX; 1314 if (IK == IK_None) { 1315 IK = FrontendOptions::getInputKindForExtension( 1316 StringRef(Inputs[i]).rsplit('.').second); 1317 // FIXME: Remove this hack. 1318 if (i == 0) 1319 DashX = IK; 1320 } 1321 Opts.Inputs.emplace_back(std::move(Inputs[i]), IK); 1322 } 1323 1324 return DashX; 1325 } 1326 1327 std::string CompilerInvocation::GetResourcesPath(const char *Argv0, 1328 void *MainAddr) { 1329 std::string ClangExecutable = 1330 llvm::sys::fs::getMainExecutable(Argv0, MainAddr); 1331 StringRef Dir = llvm::sys::path::parent_path(ClangExecutable); 1332 1333 // Compute the path to the resource directory. 1334 StringRef ClangResourceDir(CLANG_RESOURCE_DIR); 1335 SmallString<128> P(Dir); 1336 if (ClangResourceDir != "") 1337 llvm::sys::path::append(P, ClangResourceDir); 1338 else 1339 llvm::sys::path::append(P, "..", Twine("lib") + CLANG_LIBDIR_SUFFIX, 1340 "clang", CLANG_VERSION_STRING); 1341 1342 return P.str(); 1343 } 1344 1345 static void ParseHeaderSearchArgs(HeaderSearchOptions &Opts, ArgList &Args) { 1346 using namespace options; 1347 Opts.Sysroot = Args.getLastArgValue(OPT_isysroot, "/"); 1348 Opts.Verbose = Args.hasArg(OPT_v); 1349 Opts.UseBuiltinIncludes = !Args.hasArg(OPT_nobuiltininc); 1350 Opts.UseStandardSystemIncludes = !Args.hasArg(OPT_nostdsysteminc); 1351 Opts.UseStandardCXXIncludes = !Args.hasArg(OPT_nostdincxx); 1352 if (const Arg *A = Args.getLastArg(OPT_stdlib_EQ)) 1353 Opts.UseLibcxx = (strcmp(A->getValue(), "libc++") == 0); 1354 Opts.ResourceDir = Args.getLastArgValue(OPT_resource_dir); 1355 Opts.ModuleCachePath = Args.getLastArgValue(OPT_fmodules_cache_path); 1356 Opts.ModuleUserBuildPath = Args.getLastArgValue(OPT_fmodules_user_build_path); 1357 Opts.DisableModuleHash = Args.hasArg(OPT_fdisable_module_hash); 1358 Opts.ImplicitModuleMaps = Args.hasArg(OPT_fimplicit_module_maps); 1359 Opts.ModuleMapFileHomeIsCwd = Args.hasArg(OPT_fmodule_map_file_home_is_cwd); 1360 Opts.ModuleCachePruneInterval = 1361 getLastArgIntValue(Args, OPT_fmodules_prune_interval, 7 * 24 * 60 * 60); 1362 Opts.ModuleCachePruneAfter = 1363 getLastArgIntValue(Args, OPT_fmodules_prune_after, 31 * 24 * 60 * 60); 1364 Opts.ModulesValidateOncePerBuildSession = 1365 Args.hasArg(OPT_fmodules_validate_once_per_build_session); 1366 Opts.BuildSessionTimestamp = 1367 getLastArgUInt64Value(Args, OPT_fbuild_session_timestamp, 0); 1368 Opts.ModulesValidateSystemHeaders = 1369 Args.hasArg(OPT_fmodules_validate_system_headers); 1370 if (const Arg *A = Args.getLastArg(OPT_fmodule_format_EQ)) 1371 Opts.ModuleFormat = A->getValue(); 1372 1373 for (const Arg *A : Args.filtered(OPT_fmodules_ignore_macro)) { 1374 StringRef MacroDef = A->getValue(); 1375 Opts.ModulesIgnoreMacros.insert(MacroDef.split('=').first); 1376 } 1377 1378 // Add -I..., -F..., and -index-header-map options in order. 1379 bool IsIndexHeaderMap = false; 1380 bool IsSysrootSpecified = 1381 Args.hasArg(OPT__sysroot_EQ) || Args.hasArg(OPT_isysroot); 1382 for (const Arg *A : Args.filtered(OPT_I, OPT_F, OPT_index_header_map)) { 1383 if (A->getOption().matches(OPT_index_header_map)) { 1384 // -index-header-map applies to the next -I or -F. 1385 IsIndexHeaderMap = true; 1386 continue; 1387 } 1388 1389 frontend::IncludeDirGroup Group = 1390 IsIndexHeaderMap ? frontend::IndexHeaderMap : frontend::Angled; 1391 1392 bool IsFramework = A->getOption().matches(OPT_F); 1393 std::string Path = A->getValue(); 1394 1395 if (IsSysrootSpecified && !IsFramework && A->getValue()[0] == '=') { 1396 SmallString<32> Buffer; 1397 llvm::sys::path::append(Buffer, Opts.Sysroot, 1398 llvm::StringRef(A->getValue()).substr(1)); 1399 Path = Buffer.str(); 1400 } 1401 1402 Opts.AddPath(Path.c_str(), Group, IsFramework, 1403 /*IgnoreSysroot*/ true); 1404 IsIndexHeaderMap = false; 1405 } 1406 1407 // Add -iprefix/-iwithprefix/-iwithprefixbefore options. 1408 StringRef Prefix = ""; // FIXME: This isn't the correct default prefix. 1409 for (const Arg *A : 1410 Args.filtered(OPT_iprefix, OPT_iwithprefix, OPT_iwithprefixbefore)) { 1411 if (A->getOption().matches(OPT_iprefix)) 1412 Prefix = A->getValue(); 1413 else if (A->getOption().matches(OPT_iwithprefix)) 1414 Opts.AddPath(Prefix.str() + A->getValue(), frontend::After, false, true); 1415 else 1416 Opts.AddPath(Prefix.str() + A->getValue(), frontend::Angled, false, true); 1417 } 1418 1419 for (const Arg *A : Args.filtered(OPT_idirafter)) 1420 Opts.AddPath(A->getValue(), frontend::After, false, true); 1421 for (const Arg *A : Args.filtered(OPT_iquote)) 1422 Opts.AddPath(A->getValue(), frontend::Quoted, false, true); 1423 for (const Arg *A : Args.filtered(OPT_isystem, OPT_iwithsysroot)) 1424 Opts.AddPath(A->getValue(), frontend::System, false, 1425 !A->getOption().matches(OPT_iwithsysroot)); 1426 for (const Arg *A : Args.filtered(OPT_iframework)) 1427 Opts.AddPath(A->getValue(), frontend::System, true, true); 1428 1429 // Add the paths for the various language specific isystem flags. 1430 for (const Arg *A : Args.filtered(OPT_c_isystem)) 1431 Opts.AddPath(A->getValue(), frontend::CSystem, false, true); 1432 for (const Arg *A : Args.filtered(OPT_cxx_isystem)) 1433 Opts.AddPath(A->getValue(), frontend::CXXSystem, false, true); 1434 for (const Arg *A : Args.filtered(OPT_objc_isystem)) 1435 Opts.AddPath(A->getValue(), frontend::ObjCSystem, false,true); 1436 for (const Arg *A : Args.filtered(OPT_objcxx_isystem)) 1437 Opts.AddPath(A->getValue(), frontend::ObjCXXSystem, false, true); 1438 1439 // Add the internal paths from a driver that detects standard include paths. 1440 for (const Arg *A : 1441 Args.filtered(OPT_internal_isystem, OPT_internal_externc_isystem)) { 1442 frontend::IncludeDirGroup Group = frontend::System; 1443 if (A->getOption().matches(OPT_internal_externc_isystem)) 1444 Group = frontend::ExternCSystem; 1445 Opts.AddPath(A->getValue(), Group, false, true); 1446 } 1447 1448 // Add the path prefixes which are implicitly treated as being system headers. 1449 for (const Arg *A : 1450 Args.filtered(OPT_system_header_prefix, OPT_no_system_header_prefix)) 1451 Opts.AddSystemHeaderPrefix( 1452 A->getValue(), A->getOption().matches(OPT_system_header_prefix)); 1453 1454 for (const Arg *A : Args.filtered(OPT_ivfsoverlay)) 1455 Opts.AddVFSOverlayFile(A->getValue()); 1456 } 1457 1458 bool isOpenCL(LangStandard::Kind LangStd) { 1459 return LangStd == LangStandard::lang_opencl 1460 || LangStd == LangStandard::lang_opencl11 1461 || LangStd == LangStandard::lang_opencl12 1462 || LangStd == LangStandard::lang_opencl20; 1463 } 1464 1465 void CompilerInvocation::setLangDefaults(LangOptions &Opts, InputKind IK, 1466 const llvm::Triple &T, 1467 PreprocessorOptions &PPOpts, 1468 LangStandard::Kind LangStd) { 1469 // Set some properties which depend solely on the input kind; it would be nice 1470 // to move these to the language standard, and have the driver resolve the 1471 // input kind + language standard. 1472 if (IK == IK_Asm) { 1473 Opts.AsmPreprocessor = 1; 1474 } else if (IK == IK_ObjC || 1475 IK == IK_ObjCXX || 1476 IK == IK_PreprocessedObjC || 1477 IK == IK_PreprocessedObjCXX) { 1478 Opts.ObjC1 = Opts.ObjC2 = 1; 1479 } 1480 1481 if (LangStd == LangStandard::lang_unspecified) { 1482 // Based on the base language, pick one. 1483 switch (IK) { 1484 case IK_None: 1485 case IK_AST: 1486 case IK_LLVM_IR: 1487 llvm_unreachable("Invalid input kind!"); 1488 case IK_OpenCL: 1489 LangStd = LangStandard::lang_opencl; 1490 break; 1491 case IK_CUDA: 1492 case IK_PreprocessedCuda: 1493 LangStd = LangStandard::lang_cuda; 1494 break; 1495 case IK_Asm: 1496 case IK_C: 1497 case IK_PreprocessedC: 1498 case IK_ObjC: 1499 case IK_PreprocessedObjC: 1500 // The PS4 uses C99 as the default C standard. 1501 if (T.isPS4()) 1502 LangStd = LangStandard::lang_gnu99; 1503 else 1504 LangStd = LangStandard::lang_gnu11; 1505 break; 1506 case IK_CXX: 1507 case IK_PreprocessedCXX: 1508 case IK_ObjCXX: 1509 case IK_PreprocessedObjCXX: 1510 LangStd = LangStandard::lang_gnucxx98; 1511 break; 1512 case IK_RenderScript: 1513 LangStd = LangStandard::lang_c99; 1514 break; 1515 } 1516 } 1517 1518 const LangStandard &Std = LangStandard::getLangStandardForKind(LangStd); 1519 Opts.LineComment = Std.hasLineComments(); 1520 Opts.C99 = Std.isC99(); 1521 Opts.C11 = Std.isC11(); 1522 Opts.CPlusPlus = Std.isCPlusPlus(); 1523 Opts.CPlusPlus11 = Std.isCPlusPlus11(); 1524 Opts.CPlusPlus14 = Std.isCPlusPlus14(); 1525 Opts.CPlusPlus1z = Std.isCPlusPlus1z(); 1526 Opts.Digraphs = Std.hasDigraphs(); 1527 Opts.GNUMode = Std.isGNUMode(); 1528 Opts.GNUInline = Std.isC89(); 1529 Opts.HexFloats = Std.hasHexFloats(); 1530 Opts.ImplicitInt = Std.hasImplicitInt(); 1531 1532 // Set OpenCL Version. 1533 Opts.OpenCL = isOpenCL(LangStd) || IK == IK_OpenCL; 1534 if (LangStd == LangStandard::lang_opencl) 1535 Opts.OpenCLVersion = 100; 1536 else if (LangStd == LangStandard::lang_opencl11) 1537 Opts.OpenCLVersion = 110; 1538 else if (LangStd == LangStandard::lang_opencl12) 1539 Opts.OpenCLVersion = 120; 1540 else if (LangStd == LangStandard::lang_opencl20) 1541 Opts.OpenCLVersion = 200; 1542 1543 // OpenCL has some additional defaults. 1544 if (Opts.OpenCL) { 1545 Opts.AltiVec = 0; 1546 Opts.ZVector = 0; 1547 Opts.CXXOperatorNames = 1; 1548 Opts.LaxVectorConversions = 0; 1549 Opts.DefaultFPContract = 1; 1550 Opts.NativeHalfType = 1; 1551 Opts.NativeHalfArgsAndReturns = 1; 1552 // Include default header file for OpenCL. 1553 if (Opts.IncludeDefaultHeader) { 1554 PPOpts.Includes.push_back("opencl-c.h"); 1555 } 1556 } 1557 1558 Opts.CUDA = IK == IK_CUDA || IK == IK_PreprocessedCuda || 1559 LangStd == LangStandard::lang_cuda; 1560 1561 Opts.RenderScript = IK == IK_RenderScript; 1562 if (Opts.RenderScript) { 1563 Opts.NativeHalfType = 1; 1564 Opts.NativeHalfArgsAndReturns = 1; 1565 } 1566 1567 // OpenCL and C++ both have bool, true, false keywords. 1568 Opts.Bool = Opts.OpenCL || Opts.CPlusPlus; 1569 1570 // OpenCL has half keyword 1571 Opts.Half = Opts.OpenCL; 1572 1573 // C++ has wchar_t keyword. 1574 Opts.WChar = Opts.CPlusPlus; 1575 1576 Opts.GNUKeywords = Opts.GNUMode; 1577 Opts.CXXOperatorNames = Opts.CPlusPlus; 1578 1579 Opts.DollarIdents = !Opts.AsmPreprocessor; 1580 } 1581 1582 /// Attempt to parse a visibility value out of the given argument. 1583 static Visibility parseVisibility(Arg *arg, ArgList &args, 1584 DiagnosticsEngine &diags) { 1585 StringRef value = arg->getValue(); 1586 if (value == "default") { 1587 return DefaultVisibility; 1588 } else if (value == "hidden" || value == "internal") { 1589 return HiddenVisibility; 1590 } else if (value == "protected") { 1591 // FIXME: diagnose if target does not support protected visibility 1592 return ProtectedVisibility; 1593 } 1594 1595 diags.Report(diag::err_drv_invalid_value) 1596 << arg->getAsString(args) << value; 1597 return DefaultVisibility; 1598 } 1599 1600 static void ParseLangArgs(LangOptions &Opts, ArgList &Args, InputKind IK, 1601 const TargetOptions &TargetOpts, 1602 PreprocessorOptions &PPOpts, 1603 DiagnosticsEngine &Diags) { 1604 // FIXME: Cleanup per-file based stuff. 1605 LangStandard::Kind LangStd = LangStandard::lang_unspecified; 1606 if (const Arg *A = Args.getLastArg(OPT_std_EQ)) { 1607 LangStd = llvm::StringSwitch<LangStandard::Kind>(A->getValue()) 1608 #define LANGSTANDARD(id, name, desc, features) \ 1609 .Case(name, LangStandard::lang_##id) 1610 #define LANGSTANDARD_ALIAS(id, alias) \ 1611 .Case(alias, LangStandard::lang_##id) 1612 #include "clang/Frontend/LangStandards.def" 1613 .Default(LangStandard::lang_unspecified); 1614 if (LangStd == LangStandard::lang_unspecified) 1615 Diags.Report(diag::err_drv_invalid_value) 1616 << A->getAsString(Args) << A->getValue(); 1617 else { 1618 // Valid standard, check to make sure language and standard are 1619 // compatible. 1620 const LangStandard &Std = LangStandard::getLangStandardForKind(LangStd); 1621 switch (IK) { 1622 case IK_C: 1623 case IK_ObjC: 1624 case IK_PreprocessedC: 1625 case IK_PreprocessedObjC: 1626 if (!(Std.isC89() || Std.isC99())) 1627 Diags.Report(diag::err_drv_argument_not_allowed_with) 1628 << A->getAsString(Args) << "C/ObjC"; 1629 break; 1630 case IK_CXX: 1631 case IK_ObjCXX: 1632 case IK_PreprocessedCXX: 1633 case IK_PreprocessedObjCXX: 1634 if (!Std.isCPlusPlus()) 1635 Diags.Report(diag::err_drv_argument_not_allowed_with) 1636 << A->getAsString(Args) << "C++/ObjC++"; 1637 break; 1638 case IK_OpenCL: 1639 if (!isOpenCL(LangStd)) 1640 Diags.Report(diag::err_drv_argument_not_allowed_with) 1641 << A->getAsString(Args) << "OpenCL"; 1642 break; 1643 case IK_CUDA: 1644 case IK_PreprocessedCuda: 1645 if (!Std.isCPlusPlus()) 1646 Diags.Report(diag::err_drv_argument_not_allowed_with) 1647 << A->getAsString(Args) << "CUDA"; 1648 break; 1649 default: 1650 break; 1651 } 1652 } 1653 } 1654 1655 // -cl-std only applies for OpenCL language standards. 1656 // Override the -std option in this case. 1657 if (const Arg *A = Args.getLastArg(OPT_cl_std_EQ)) { 1658 LangStandard::Kind OpenCLLangStd 1659 = llvm::StringSwitch<LangStandard::Kind>(A->getValue()) 1660 .Cases("cl", "CL", LangStandard::lang_opencl) 1661 .Cases("cl1.1", "CL1.1", LangStandard::lang_opencl11) 1662 .Cases("cl1.2", "CL1.2", LangStandard::lang_opencl12) 1663 .Cases("cl2.0", "CL2.0", LangStandard::lang_opencl20) 1664 .Default(LangStandard::lang_unspecified); 1665 1666 if (OpenCLLangStd == LangStandard::lang_unspecified) { 1667 Diags.Report(diag::err_drv_invalid_value) 1668 << A->getAsString(Args) << A->getValue(); 1669 } 1670 else 1671 LangStd = OpenCLLangStd; 1672 } 1673 1674 Opts.IncludeDefaultHeader = Args.hasArg(OPT_finclude_default_header); 1675 1676 llvm::Triple T(TargetOpts.Triple); 1677 CompilerInvocation::setLangDefaults(Opts, IK, T, PPOpts, LangStd); 1678 1679 // We abuse '-f[no-]gnu-keywords' to force overriding all GNU-extension 1680 // keywords. This behavior is provided by GCC's poorly named '-fasm' flag, 1681 // while a subset (the non-C++ GNU keywords) is provided by GCC's 1682 // '-fgnu-keywords'. Clang conflates the two for simplicity under the single 1683 // name, as it doesn't seem a useful distinction. 1684 Opts.GNUKeywords = Args.hasFlag(OPT_fgnu_keywords, OPT_fno_gnu_keywords, 1685 Opts.GNUKeywords); 1686 1687 if (Args.hasArg(OPT_fno_operator_names)) 1688 Opts.CXXOperatorNames = 0; 1689 1690 if (Args.hasArg(OPT_fcuda_is_device)) 1691 Opts.CUDAIsDevice = 1; 1692 1693 if (Args.hasArg(OPT_fcuda_allow_variadic_functions)) 1694 Opts.CUDAAllowVariadicFunctions = 1; 1695 1696 if (Args.hasArg(OPT_fno_cuda_host_device_constexpr)) 1697 Opts.CUDAHostDeviceConstexpr = 0; 1698 1699 if (Opts.CUDAIsDevice && Args.hasArg(OPT_fcuda_flush_denormals_to_zero)) 1700 Opts.CUDADeviceFlushDenormalsToZero = 1; 1701 1702 if (Opts.CUDAIsDevice && Args.hasArg(OPT_fcuda_approx_transcendentals)) 1703 Opts.CUDADeviceApproxTranscendentals = 1; 1704 1705 if (Opts.ObjC1) { 1706 if (Arg *arg = Args.getLastArg(OPT_fobjc_runtime_EQ)) { 1707 StringRef value = arg->getValue(); 1708 if (Opts.ObjCRuntime.tryParse(value)) 1709 Diags.Report(diag::err_drv_unknown_objc_runtime) << value; 1710 } 1711 1712 if (Args.hasArg(OPT_fobjc_gc_only)) 1713 Opts.setGC(LangOptions::GCOnly); 1714 else if (Args.hasArg(OPT_fobjc_gc)) 1715 Opts.setGC(LangOptions::HybridGC); 1716 else if (Args.hasArg(OPT_fobjc_arc)) { 1717 Opts.ObjCAutoRefCount = 1; 1718 if (!Opts.ObjCRuntime.allowsARC()) 1719 Diags.Report(diag::err_arc_unsupported_on_runtime); 1720 } 1721 1722 // ObjCWeakRuntime tracks whether the runtime supports __weak, not 1723 // whether the feature is actually enabled. This is predominantly 1724 // determined by -fobjc-runtime, but we allow it to be overridden 1725 // from the command line for testing purposes. 1726 if (Args.hasArg(OPT_fobjc_runtime_has_weak)) 1727 Opts.ObjCWeakRuntime = 1; 1728 else 1729 Opts.ObjCWeakRuntime = Opts.ObjCRuntime.allowsWeak(); 1730 1731 // ObjCWeak determines whether __weak is actually enabled. 1732 // Note that we allow -fno-objc-weak to disable this even in ARC mode. 1733 if (auto weakArg = Args.getLastArg(OPT_fobjc_weak, OPT_fno_objc_weak)) { 1734 if (!weakArg->getOption().matches(OPT_fobjc_weak)) { 1735 assert(!Opts.ObjCWeak); 1736 } else if (Opts.getGC() != LangOptions::NonGC) { 1737 Diags.Report(diag::err_objc_weak_with_gc); 1738 } else if (!Opts.ObjCWeakRuntime) { 1739 Diags.Report(diag::err_objc_weak_unsupported); 1740 } else { 1741 Opts.ObjCWeak = 1; 1742 } 1743 } else if (Opts.ObjCAutoRefCount) { 1744 Opts.ObjCWeak = Opts.ObjCWeakRuntime; 1745 } 1746 1747 if (Args.hasArg(OPT_fno_objc_infer_related_result_type)) 1748 Opts.ObjCInferRelatedResultType = 0; 1749 1750 if (Args.hasArg(OPT_fobjc_subscripting_legacy_runtime)) 1751 Opts.ObjCSubscriptingLegacyRuntime = 1752 (Opts.ObjCRuntime.getKind() == ObjCRuntime::FragileMacOSX); 1753 } 1754 1755 if (Args.hasArg(OPT_fgnu89_inline)) { 1756 if (Opts.CPlusPlus) 1757 Diags.Report(diag::err_drv_argument_not_allowed_with) << "-fgnu89-inline" 1758 << "C++/ObjC++"; 1759 else 1760 Opts.GNUInline = 1; 1761 } 1762 1763 if (Args.hasArg(OPT_fapple_kext)) { 1764 if (!Opts.CPlusPlus) 1765 Diags.Report(diag::warn_c_kext); 1766 else 1767 Opts.AppleKext = 1; 1768 } 1769 1770 if (Args.hasArg(OPT_print_ivar_layout)) 1771 Opts.ObjCGCBitmapPrint = 1; 1772 if (Args.hasArg(OPT_fno_constant_cfstrings)) 1773 Opts.NoConstantCFStrings = 1; 1774 1775 if (Args.hasArg(OPT_faltivec)) 1776 Opts.AltiVec = 1; 1777 1778 if (Args.hasArg(OPT_fzvector)) 1779 Opts.ZVector = 1; 1780 1781 if (Args.hasArg(OPT_pthread)) 1782 Opts.POSIXThreads = 1; 1783 1784 // The value-visibility mode defaults to "default". 1785 if (Arg *visOpt = Args.getLastArg(OPT_fvisibility)) { 1786 Opts.setValueVisibilityMode(parseVisibility(visOpt, Args, Diags)); 1787 } else { 1788 Opts.setValueVisibilityMode(DefaultVisibility); 1789 } 1790 1791 // The type-visibility mode defaults to the value-visibility mode. 1792 if (Arg *typeVisOpt = Args.getLastArg(OPT_ftype_visibility)) { 1793 Opts.setTypeVisibilityMode(parseVisibility(typeVisOpt, Args, Diags)); 1794 } else { 1795 Opts.setTypeVisibilityMode(Opts.getValueVisibilityMode()); 1796 } 1797 1798 if (Args.hasArg(OPT_fvisibility_inlines_hidden)) 1799 Opts.InlineVisibilityHidden = 1; 1800 1801 if (Args.hasArg(OPT_ftrapv)) { 1802 Opts.setSignedOverflowBehavior(LangOptions::SOB_Trapping); 1803 // Set the handler, if one is specified. 1804 Opts.OverflowHandler = 1805 Args.getLastArgValue(OPT_ftrapv_handler); 1806 } 1807 else if (Args.hasArg(OPT_fwrapv)) 1808 Opts.setSignedOverflowBehavior(LangOptions::SOB_Defined); 1809 1810 Opts.MSVCCompat = Args.hasArg(OPT_fms_compatibility); 1811 Opts.MicrosoftExt = Opts.MSVCCompat || Args.hasArg(OPT_fms_extensions); 1812 Opts.AsmBlocks = Args.hasArg(OPT_fasm_blocks) || Opts.MicrosoftExt; 1813 Opts.MSCompatibilityVersion = 0; 1814 if (const Arg *A = Args.getLastArg(OPT_fms_compatibility_version)) { 1815 VersionTuple VT; 1816 if (VT.tryParse(A->getValue())) 1817 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) 1818 << A->getValue(); 1819 Opts.MSCompatibilityVersion = VT.getMajor() * 10000000 + 1820 VT.getMinor().getValueOr(0) * 100000 + 1821 VT.getSubminor().getValueOr(0); 1822 } 1823 1824 // Mimicing gcc's behavior, trigraphs are only enabled if -trigraphs 1825 // is specified, or -std is set to a conforming mode. 1826 // Trigraphs are disabled by default in c++1z onwards. 1827 Opts.Trigraphs = !Opts.GNUMode && !Opts.MSVCCompat && !Opts.CPlusPlus1z; 1828 Opts.Trigraphs = 1829 Args.hasFlag(OPT_ftrigraphs, OPT_fno_trigraphs, Opts.Trigraphs); 1830 1831 Opts.DollarIdents = Args.hasFlag(OPT_fdollars_in_identifiers, 1832 OPT_fno_dollars_in_identifiers, 1833 Opts.DollarIdents); 1834 Opts.PascalStrings = Args.hasArg(OPT_fpascal_strings); 1835 Opts.VtorDispMode = getLastArgIntValue(Args, OPT_vtordisp_mode_EQ, 1, Diags); 1836 Opts.Borland = Args.hasArg(OPT_fborland_extensions); 1837 Opts.WritableStrings = Args.hasArg(OPT_fwritable_strings); 1838 Opts.ConstStrings = Args.hasFlag(OPT_fconst_strings, OPT_fno_const_strings, 1839 Opts.ConstStrings); 1840 if (Args.hasArg(OPT_fno_lax_vector_conversions)) 1841 Opts.LaxVectorConversions = 0; 1842 if (Args.hasArg(OPT_fno_threadsafe_statics)) 1843 Opts.ThreadsafeStatics = 0; 1844 Opts.Exceptions = Args.hasArg(OPT_fexceptions); 1845 Opts.ObjCExceptions = Args.hasArg(OPT_fobjc_exceptions); 1846 Opts.CXXExceptions = Args.hasArg(OPT_fcxx_exceptions); 1847 Opts.SjLjExceptions = Args.hasArg(OPT_fsjlj_exceptions); 1848 Opts.ExternCNoUnwind = Args.hasArg(OPT_fexternc_nounwind); 1849 Opts.TraditionalCPP = Args.hasArg(OPT_traditional_cpp); 1850 1851 Opts.RTTI = Opts.CPlusPlus && !Args.hasArg(OPT_fno_rtti); 1852 Opts.RTTIData = Opts.RTTI && !Args.hasArg(OPT_fno_rtti_data); 1853 Opts.Blocks = Args.hasArg(OPT_fblocks) || (Opts.OpenCL 1854 && Opts.OpenCLVersion >= 200); 1855 Opts.BlocksRuntimeOptional = Args.hasArg(OPT_fblocks_runtime_optional); 1856 Opts.Coroutines = Args.hasArg(OPT_fcoroutines); 1857 Opts.Modules = Args.hasArg(OPT_fmodules); 1858 Opts.ModulesStrictDeclUse = Args.hasArg(OPT_fmodules_strict_decluse); 1859 Opts.ModulesDeclUse = 1860 Args.hasArg(OPT_fmodules_decluse) || Opts.ModulesStrictDeclUse; 1861 Opts.ModulesLocalVisibility = 1862 Args.hasArg(OPT_fmodules_local_submodule_visibility); 1863 Opts.ModulesSearchAll = Opts.Modules && 1864 !Args.hasArg(OPT_fno_modules_search_all) && 1865 Args.hasArg(OPT_fmodules_search_all); 1866 Opts.ModulesErrorRecovery = !Args.hasArg(OPT_fno_modules_error_recovery); 1867 Opts.ImplicitModules = !Args.hasArg(OPT_fno_implicit_modules); 1868 Opts.CharIsSigned = Opts.OpenCL || !Args.hasArg(OPT_fno_signed_char); 1869 Opts.WChar = Opts.CPlusPlus && !Args.hasArg(OPT_fno_wchar); 1870 Opts.ShortWChar = Args.hasFlag(OPT_fshort_wchar, OPT_fno_short_wchar, false); 1871 Opts.ShortEnums = Args.hasArg(OPT_fshort_enums); 1872 Opts.Freestanding = Args.hasArg(OPT_ffreestanding); 1873 Opts.NoBuiltin = Args.hasArg(OPT_fno_builtin) || Opts.Freestanding; 1874 if (!Opts.NoBuiltin) 1875 getAllNoBuiltinFuncValues(Args, Opts.NoBuiltinFuncs); 1876 Opts.NoMathBuiltin = Args.hasArg(OPT_fno_math_builtin); 1877 Opts.SizedDeallocation = Args.hasArg(OPT_fsized_deallocation); 1878 Opts.ConceptsTS = Args.hasArg(OPT_fconcepts_ts); 1879 Opts.HeinousExtensions = Args.hasArg(OPT_fheinous_gnu_extensions); 1880 Opts.AccessControl = !Args.hasArg(OPT_fno_access_control); 1881 Opts.ElideConstructors = !Args.hasArg(OPT_fno_elide_constructors); 1882 Opts.MathErrno = !Opts.OpenCL && Args.hasArg(OPT_fmath_errno); 1883 Opts.InstantiationDepth = 1884 getLastArgIntValue(Args, OPT_ftemplate_depth, 256, Diags); 1885 Opts.ArrowDepth = 1886 getLastArgIntValue(Args, OPT_foperator_arrow_depth, 256, Diags); 1887 Opts.ConstexprCallDepth = 1888 getLastArgIntValue(Args, OPT_fconstexpr_depth, 512, Diags); 1889 Opts.ConstexprStepLimit = 1890 getLastArgIntValue(Args, OPT_fconstexpr_steps, 1048576, Diags); 1891 Opts.BracketDepth = getLastArgIntValue(Args, OPT_fbracket_depth, 256, Diags); 1892 Opts.DelayedTemplateParsing = Args.hasArg(OPT_fdelayed_template_parsing); 1893 Opts.NumLargeByValueCopy = 1894 getLastArgIntValue(Args, OPT_Wlarge_by_value_copy_EQ, 0, Diags); 1895 Opts.MSBitfields = Args.hasArg(OPT_mms_bitfields); 1896 Opts.ObjCConstantStringClass = 1897 Args.getLastArgValue(OPT_fconstant_string_class); 1898 Opts.ObjCDefaultSynthProperties = 1899 !Args.hasArg(OPT_disable_objc_default_synthesize_properties); 1900 Opts.EncodeExtendedBlockSig = 1901 Args.hasArg(OPT_fencode_extended_block_signature); 1902 Opts.EmitAllDecls = Args.hasArg(OPT_femit_all_decls); 1903 Opts.PackStruct = getLastArgIntValue(Args, OPT_fpack_struct_EQ, 0, Diags); 1904 Opts.MaxTypeAlign = getLastArgIntValue(Args, OPT_fmax_type_align_EQ, 0, Diags); 1905 Opts.AlignDouble = Args.hasArg(OPT_malign_double); 1906 Opts.PICLevel = getLastArgIntValue(Args, OPT_pic_level, 0, Diags); 1907 Opts.PIELevel = getLastArgIntValue(Args, OPT_pie_level, 0, Diags); 1908 Opts.Static = Args.hasArg(OPT_static_define); 1909 Opts.DumpRecordLayoutsSimple = Args.hasArg(OPT_fdump_record_layouts_simple); 1910 Opts.DumpRecordLayouts = Opts.DumpRecordLayoutsSimple 1911 || Args.hasArg(OPT_fdump_record_layouts); 1912 Opts.DumpVTableLayouts = Args.hasArg(OPT_fdump_vtable_layouts); 1913 Opts.SpellChecking = !Args.hasArg(OPT_fno_spell_checking); 1914 Opts.NoBitFieldTypeAlign = Args.hasArg(OPT_fno_bitfield_type_align); 1915 Opts.SinglePrecisionConstants = Args.hasArg(OPT_cl_single_precision_constant); 1916 Opts.FastRelaxedMath = Args.hasArg(OPT_cl_fast_relaxed_math); 1917 Opts.HexagonQdsp6Compat = Args.hasArg(OPT_mqdsp6_compat); 1918 Opts.FakeAddressSpaceMap = Args.hasArg(OPT_ffake_address_space_map); 1919 Opts.ParseUnknownAnytype = Args.hasArg(OPT_funknown_anytype); 1920 Opts.DebuggerSupport = Args.hasArg(OPT_fdebugger_support); 1921 Opts.DebuggerCastResultToId = Args.hasArg(OPT_fdebugger_cast_result_to_id); 1922 Opts.DebuggerObjCLiteral = Args.hasArg(OPT_fdebugger_objc_literal); 1923 Opts.ApplePragmaPack = Args.hasArg(OPT_fapple_pragma_pack); 1924 Opts.CurrentModule = Args.getLastArgValue(OPT_fmodule_name_EQ); 1925 Opts.AppExt = Args.hasArg(OPT_fapplication_extension); 1926 Opts.ModuleFeatures = Args.getAllArgValues(OPT_fmodule_feature); 1927 std::sort(Opts.ModuleFeatures.begin(), Opts.ModuleFeatures.end()); 1928 Opts.NativeHalfType |= Args.hasArg(OPT_fnative_half_type); 1929 Opts.NativeHalfArgsAndReturns |= Args.hasArg(OPT_fnative_half_arguments_and_returns); 1930 // Enable HalfArgsAndReturns if present in Args or if NativeHalfArgsAndReturns 1931 // is enabled. 1932 Opts.HalfArgsAndReturns = Args.hasArg(OPT_fallow_half_arguments_and_returns) 1933 | Opts.NativeHalfArgsAndReturns; 1934 Opts.GNUAsm = !Args.hasArg(OPT_fno_gnu_inline_asm); 1935 1936 // __declspec is enabled by default for the PS4 by the driver, and also 1937 // enabled for Microsoft Extensions or Borland Extensions, here. 1938 // 1939 // FIXME: __declspec is also currently enabled for CUDA, but isn't really a 1940 // CUDA extension, however it is required for supporting cuda_builtin_vars.h, 1941 // which uses __declspec(property). Once that has been rewritten in terms of 1942 // something more generic, remove the Opts.CUDA term here. 1943 Opts.DeclSpecKeyword = 1944 Args.hasFlag(OPT_fdeclspec, OPT_fno_declspec, 1945 (Opts.MicrosoftExt || Opts.Borland || Opts.CUDA)); 1946 1947 // For now, we only support local submodule visibility in C++ (because we 1948 // heavily depend on the ODR for merging redefinitions). 1949 if (Opts.ModulesLocalVisibility && !Opts.CPlusPlus) 1950 Diags.Report(diag::err_drv_argument_not_allowed_with) 1951 << "-fmodules-local-submodule-visibility" << "C"; 1952 1953 if (Arg *A = Args.getLastArg(OPT_faddress_space_map_mangling_EQ)) { 1954 switch (llvm::StringSwitch<unsigned>(A->getValue()) 1955 .Case("target", LangOptions::ASMM_Target) 1956 .Case("no", LangOptions::ASMM_Off) 1957 .Case("yes", LangOptions::ASMM_On) 1958 .Default(255)) { 1959 default: 1960 Diags.Report(diag::err_drv_invalid_value) 1961 << "-faddress-space-map-mangling=" << A->getValue(); 1962 break; 1963 case LangOptions::ASMM_Target: 1964 Opts.setAddressSpaceMapMangling(LangOptions::ASMM_Target); 1965 break; 1966 case LangOptions::ASMM_On: 1967 Opts.setAddressSpaceMapMangling(LangOptions::ASMM_On); 1968 break; 1969 case LangOptions::ASMM_Off: 1970 Opts.setAddressSpaceMapMangling(LangOptions::ASMM_Off); 1971 break; 1972 } 1973 } 1974 1975 if (Arg *A = Args.getLastArg(OPT_fms_memptr_rep_EQ)) { 1976 LangOptions::PragmaMSPointersToMembersKind InheritanceModel = 1977 llvm::StringSwitch<LangOptions::PragmaMSPointersToMembersKind>( 1978 A->getValue()) 1979 .Case("single", 1980 LangOptions::PPTMK_FullGeneralitySingleInheritance) 1981 .Case("multiple", 1982 LangOptions::PPTMK_FullGeneralityMultipleInheritance) 1983 .Case("virtual", 1984 LangOptions::PPTMK_FullGeneralityVirtualInheritance) 1985 .Default(LangOptions::PPTMK_BestCase); 1986 if (InheritanceModel == LangOptions::PPTMK_BestCase) 1987 Diags.Report(diag::err_drv_invalid_value) 1988 << "-fms-memptr-rep=" << A->getValue(); 1989 1990 Opts.setMSPointerToMemberRepresentationMethod(InheritanceModel); 1991 } 1992 1993 // Check for MS default calling conventions being specified. 1994 if (Arg *A = Args.getLastArg(OPT_fdefault_calling_conv_EQ)) { 1995 LangOptions::DefaultCallingConvention DefaultCC = 1996 llvm::StringSwitch<LangOptions::DefaultCallingConvention>( 1997 A->getValue()) 1998 .Case("cdecl", LangOptions::DCC_CDecl) 1999 .Case("fastcall", LangOptions::DCC_FastCall) 2000 .Case("stdcall", LangOptions::DCC_StdCall) 2001 .Case("vectorcall", LangOptions::DCC_VectorCall) 2002 .Default(LangOptions::DCC_None); 2003 if (DefaultCC == LangOptions::DCC_None) 2004 Diags.Report(diag::err_drv_invalid_value) 2005 << "-fdefault-calling-conv=" << A->getValue(); 2006 2007 llvm::Triple T(TargetOpts.Triple); 2008 llvm::Triple::ArchType Arch = T.getArch(); 2009 bool emitError = (DefaultCC == LangOptions::DCC_FastCall || 2010 DefaultCC == LangOptions::DCC_StdCall) && 2011 Arch != llvm::Triple::x86; 2012 emitError |= DefaultCC == LangOptions::DCC_VectorCall && 2013 !(Arch == llvm::Triple::x86 || Arch == llvm::Triple::x86_64); 2014 if (emitError) 2015 Diags.Report(diag::err_drv_argument_not_allowed_with) 2016 << A->getSpelling() << T.getTriple(); 2017 else 2018 Opts.setDefaultCallingConv(DefaultCC); 2019 } 2020 2021 // -mrtd option 2022 if (Arg *A = Args.getLastArg(OPT_mrtd)) { 2023 if (Opts.getDefaultCallingConv() != LangOptions::DCC_None) 2024 Diags.Report(diag::err_drv_argument_not_allowed_with) 2025 << A->getSpelling() << "-fdefault-calling-conv"; 2026 else { 2027 llvm::Triple T(TargetOpts.Triple); 2028 if (T.getArch() != llvm::Triple::x86) 2029 Diags.Report(diag::err_drv_argument_not_allowed_with) 2030 << A->getSpelling() << T.getTriple(); 2031 else 2032 Opts.setDefaultCallingConv(LangOptions::DCC_StdCall); 2033 } 2034 } 2035 2036 // Check if -fopenmp is specified. 2037 Opts.OpenMP = Args.hasArg(options::OPT_fopenmp) ? 1 : 0; 2038 Opts.OpenMPUseTLS = 2039 Opts.OpenMP && !Args.hasArg(options::OPT_fnoopenmp_use_tls); 2040 Opts.OpenMPIsDevice = 2041 Opts.OpenMP && Args.hasArg(options::OPT_fopenmp_is_device); 2042 2043 if (Opts.OpenMP) { 2044 int Version = 2045 getLastArgIntValue(Args, OPT_fopenmp_version_EQ, Opts.OpenMP, Diags); 2046 if (Version != 0) 2047 Opts.OpenMP = Version; 2048 // Provide diagnostic when a given target is not expected to be an OpenMP 2049 // device or host. 2050 if (!Opts.OpenMPIsDevice) { 2051 switch (T.getArch()) { 2052 default: 2053 break; 2054 // Add unsupported host targets here: 2055 case llvm::Triple::nvptx: 2056 case llvm::Triple::nvptx64: 2057 Diags.Report(clang::diag::err_drv_omp_host_target_not_supported) 2058 << TargetOpts.Triple; 2059 break; 2060 } 2061 } 2062 } 2063 2064 // Get the OpenMP target triples if any. 2065 if (Arg *A = Args.getLastArg(options::OPT_fomptargets_EQ)) { 2066 2067 for (unsigned i = 0; i < A->getNumValues(); ++i) { 2068 llvm::Triple TT(A->getValue(i)); 2069 2070 if (TT.getArch() == llvm::Triple::UnknownArch) 2071 Diags.Report(clang::diag::err_drv_invalid_omp_target) << A->getValue(i); 2072 else 2073 Opts.OMPTargetTriples.push_back(TT); 2074 } 2075 } 2076 2077 // Get OpenMP host file path if any and report if a non existent file is 2078 // found 2079 if (Arg *A = Args.getLastArg(options::OPT_fomp_host_ir_file_path)) { 2080 Opts.OMPHostIRFile = A->getValue(); 2081 if (!llvm::sys::fs::exists(Opts.OMPHostIRFile)) 2082 Diags.Report(clang::diag::err_drv_omp_host_ir_file_not_found) 2083 << Opts.OMPHostIRFile; 2084 } 2085 2086 // Record whether the __DEPRECATED define was requested. 2087 Opts.Deprecated = Args.hasFlag(OPT_fdeprecated_macro, 2088 OPT_fno_deprecated_macro, 2089 Opts.Deprecated); 2090 2091 // FIXME: Eliminate this dependency. 2092 unsigned Opt = getOptimizationLevel(Args, IK, Diags), 2093 OptSize = getOptimizationLevelSize(Args); 2094 Opts.Optimize = Opt != 0; 2095 Opts.OptimizeSize = OptSize != 0; 2096 2097 // This is the __NO_INLINE__ define, which just depends on things like the 2098 // optimization level and -fno-inline, not actually whether the backend has 2099 // inlining enabled. 2100 Opts.NoInlineDefine = !Opt || Args.hasArg(OPT_fno_inline); 2101 2102 Opts.FastMath = Args.hasArg(OPT_ffast_math) || 2103 Args.hasArg(OPT_cl_fast_relaxed_math); 2104 Opts.FiniteMathOnly = Args.hasArg(OPT_ffinite_math_only) || 2105 Args.hasArg(OPT_cl_finite_math_only) || 2106 Args.hasArg(OPT_cl_fast_relaxed_math); 2107 Opts.UnsafeFPMath = Args.hasArg(OPT_menable_unsafe_fp_math) || 2108 Args.hasArg(OPT_cl_unsafe_math_optimizations) || 2109 Args.hasArg(OPT_cl_fast_relaxed_math); 2110 2111 Opts.RetainCommentsFromSystemHeaders = 2112 Args.hasArg(OPT_fretain_comments_from_system_headers); 2113 2114 unsigned SSP = getLastArgIntValue(Args, OPT_stack_protector, 0, Diags); 2115 switch (SSP) { 2116 default: 2117 Diags.Report(diag::err_drv_invalid_value) 2118 << Args.getLastArg(OPT_stack_protector)->getAsString(Args) << SSP; 2119 break; 2120 case 0: Opts.setStackProtector(LangOptions::SSPOff); break; 2121 case 1: Opts.setStackProtector(LangOptions::SSPOn); break; 2122 case 2: Opts.setStackProtector(LangOptions::SSPStrong); break; 2123 case 3: Opts.setStackProtector(LangOptions::SSPReq); break; 2124 } 2125 2126 // Parse -fsanitize= arguments. 2127 parseSanitizerKinds("-fsanitize=", Args.getAllArgValues(OPT_fsanitize_EQ), 2128 Diags, Opts.Sanitize); 2129 // -fsanitize-address-field-padding=N has to be a LangOpt, parse it here. 2130 Opts.SanitizeAddressFieldPadding = 2131 getLastArgIntValue(Args, OPT_fsanitize_address_field_padding, 0, Diags); 2132 Opts.SanitizerBlacklistFiles = Args.getAllArgValues(OPT_fsanitize_blacklist); 2133 } 2134 2135 static void ParsePreprocessorArgs(PreprocessorOptions &Opts, ArgList &Args, 2136 FileManager &FileMgr, 2137 DiagnosticsEngine &Diags) { 2138 using namespace options; 2139 Opts.ImplicitPCHInclude = Args.getLastArgValue(OPT_include_pch); 2140 Opts.ImplicitPTHInclude = Args.getLastArgValue(OPT_include_pth); 2141 if (const Arg *A = Args.getLastArg(OPT_token_cache)) 2142 Opts.TokenCache = A->getValue(); 2143 else 2144 Opts.TokenCache = Opts.ImplicitPTHInclude; 2145 Opts.UsePredefines = !Args.hasArg(OPT_undef); 2146 Opts.DetailedRecord = Args.hasArg(OPT_detailed_preprocessing_record); 2147 Opts.DisablePCHValidation = Args.hasArg(OPT_fno_validate_pch); 2148 2149 Opts.DumpDeserializedPCHDecls = Args.hasArg(OPT_dump_deserialized_pch_decls); 2150 for (const Arg *A : Args.filtered(OPT_error_on_deserialized_pch_decl)) 2151 Opts.DeserializedPCHDeclsToErrorOn.insert(A->getValue()); 2152 2153 if (const Arg *A = Args.getLastArg(OPT_preamble_bytes_EQ)) { 2154 StringRef Value(A->getValue()); 2155 size_t Comma = Value.find(','); 2156 unsigned Bytes = 0; 2157 unsigned EndOfLine = 0; 2158 2159 if (Comma == StringRef::npos || 2160 Value.substr(0, Comma).getAsInteger(10, Bytes) || 2161 Value.substr(Comma + 1).getAsInteger(10, EndOfLine)) 2162 Diags.Report(diag::err_drv_preamble_format); 2163 else { 2164 Opts.PrecompiledPreambleBytes.first = Bytes; 2165 Opts.PrecompiledPreambleBytes.second = (EndOfLine != 0); 2166 } 2167 } 2168 2169 // Add macros from the command line. 2170 for (const Arg *A : Args.filtered(OPT_D, OPT_U)) { 2171 if (A->getOption().matches(OPT_D)) 2172 Opts.addMacroDef(A->getValue()); 2173 else 2174 Opts.addMacroUndef(A->getValue()); 2175 } 2176 2177 Opts.MacroIncludes = Args.getAllArgValues(OPT_imacros); 2178 2179 // Add the ordered list of -includes. 2180 for (const Arg *A : Args.filtered(OPT_include)) 2181 Opts.Includes.emplace_back(A->getValue()); 2182 2183 for (const Arg *A : Args.filtered(OPT_chain_include)) 2184 Opts.ChainedIncludes.emplace_back(A->getValue()); 2185 2186 for (const Arg *A : Args.filtered(OPT_remap_file)) { 2187 std::pair<StringRef, StringRef> Split = StringRef(A->getValue()).split(';'); 2188 2189 if (Split.second.empty()) { 2190 Diags.Report(diag::err_drv_invalid_remap_file) << A->getAsString(Args); 2191 continue; 2192 } 2193 2194 Opts.addRemappedFile(Split.first, Split.second); 2195 } 2196 2197 if (Arg *A = Args.getLastArg(OPT_fobjc_arc_cxxlib_EQ)) { 2198 StringRef Name = A->getValue(); 2199 unsigned Library = llvm::StringSwitch<unsigned>(Name) 2200 .Case("libc++", ARCXX_libcxx) 2201 .Case("libstdc++", ARCXX_libstdcxx) 2202 .Case("none", ARCXX_nolib) 2203 .Default(~0U); 2204 if (Library == ~0U) 2205 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Name; 2206 else 2207 Opts.ObjCXXARCStandardLibrary = (ObjCXXARCStandardLibraryKind)Library; 2208 } 2209 } 2210 2211 static void ParsePreprocessorOutputArgs(PreprocessorOutputOptions &Opts, 2212 ArgList &Args, 2213 frontend::ActionKind Action) { 2214 using namespace options; 2215 2216 switch (Action) { 2217 case frontend::ASTDeclList: 2218 case frontend::ASTDump: 2219 case frontend::ASTPrint: 2220 case frontend::ASTView: 2221 case frontend::EmitAssembly: 2222 case frontend::EmitBC: 2223 case frontend::EmitHTML: 2224 case frontend::EmitLLVM: 2225 case frontend::EmitLLVMOnly: 2226 case frontend::EmitCodeGenOnly: 2227 case frontend::EmitObj: 2228 case frontend::FixIt: 2229 case frontend::GenerateModule: 2230 case frontend::GeneratePCH: 2231 case frontend::GeneratePTH: 2232 case frontend::ParseSyntaxOnly: 2233 case frontend::ModuleFileInfo: 2234 case frontend::VerifyPCH: 2235 case frontend::PluginAction: 2236 case frontend::PrintDeclContext: 2237 case frontend::RewriteObjC: 2238 case frontend::RewriteTest: 2239 case frontend::RunAnalysis: 2240 case frontend::MigrateSource: 2241 Opts.ShowCPP = 0; 2242 break; 2243 2244 case frontend::DumpRawTokens: 2245 case frontend::DumpTokens: 2246 case frontend::InitOnly: 2247 case frontend::PrintPreamble: 2248 case frontend::PrintPreprocessedInput: 2249 case frontend::RewriteMacros: 2250 case frontend::RunPreprocessorOnly: 2251 Opts.ShowCPP = !Args.hasArg(OPT_dM); 2252 break; 2253 } 2254 2255 Opts.ShowComments = Args.hasArg(OPT_C); 2256 Opts.ShowLineMarkers = !Args.hasArg(OPT_P); 2257 Opts.ShowMacroComments = Args.hasArg(OPT_CC); 2258 Opts.ShowMacros = Args.hasArg(OPT_dM) || Args.hasArg(OPT_dD); 2259 Opts.RewriteIncludes = Args.hasArg(OPT_frewrite_includes); 2260 Opts.UseLineDirectives = Args.hasArg(OPT_fuse_line_directives); 2261 } 2262 2263 static void ParseTargetArgs(TargetOptions &Opts, ArgList &Args, 2264 DiagnosticsEngine &Diags) { 2265 using namespace options; 2266 Opts.ABI = Args.getLastArgValue(OPT_target_abi); 2267 if (Arg *A = Args.getLastArg(OPT_meabi)) { 2268 StringRef Value = A->getValue(); 2269 llvm::EABI EABIVersion = llvm::StringSwitch<llvm::EABI>(Value) 2270 .Case("default", llvm::EABI::Default) 2271 .Case("4", llvm::EABI::EABI4) 2272 .Case("5", llvm::EABI::EABI5) 2273 .Case("gnu", llvm::EABI::GNU) 2274 .Default(llvm::EABI::Unknown); 2275 if (EABIVersion == llvm::EABI::Unknown) 2276 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) 2277 << Value; 2278 else 2279 Opts.EABIVersion = Value; 2280 } 2281 Opts.CPU = Args.getLastArgValue(OPT_target_cpu); 2282 Opts.FPMath = Args.getLastArgValue(OPT_mfpmath); 2283 Opts.FeaturesAsWritten = Args.getAllArgValues(OPT_target_feature); 2284 Opts.LinkerVersion = Args.getLastArgValue(OPT_target_linker_version); 2285 Opts.Triple = llvm::Triple::normalize(Args.getLastArgValue(OPT_triple)); 2286 Opts.Reciprocals = Args.getAllArgValues(OPT_mrecip_EQ); 2287 // Use the default target triple if unspecified. 2288 if (Opts.Triple.empty()) 2289 Opts.Triple = llvm::sys::getDefaultTargetTriple(); 2290 } 2291 2292 bool CompilerInvocation::CreateFromArgs(CompilerInvocation &Res, 2293 const char *const *ArgBegin, 2294 const char *const *ArgEnd, 2295 DiagnosticsEngine &Diags) { 2296 bool Success = true; 2297 2298 // Parse the arguments. 2299 std::unique_ptr<OptTable> Opts(createDriverOptTable()); 2300 const unsigned IncludedFlagsBitmask = options::CC1Option; 2301 unsigned MissingArgIndex, MissingArgCount; 2302 InputArgList Args = 2303 Opts->ParseArgs(llvm::makeArrayRef(ArgBegin, ArgEnd), MissingArgIndex, 2304 MissingArgCount, IncludedFlagsBitmask); 2305 LangOptions &LangOpts = *Res.getLangOpts(); 2306 2307 // Check for missing argument error. 2308 if (MissingArgCount) { 2309 Diags.Report(diag::err_drv_missing_argument) 2310 << Args.getArgString(MissingArgIndex) << MissingArgCount; 2311 Success = false; 2312 } 2313 2314 // Issue errors on unknown arguments. 2315 for (const Arg *A : Args.filtered(OPT_UNKNOWN)) { 2316 Diags.Report(diag::err_drv_unknown_argument) << A->getAsString(Args); 2317 Success = false; 2318 } 2319 2320 Success &= ParseAnalyzerArgs(*Res.getAnalyzerOpts(), Args, Diags); 2321 Success &= ParseMigratorArgs(Res.getMigratorOpts(), Args); 2322 ParseDependencyOutputArgs(Res.getDependencyOutputOpts(), Args); 2323 Success &= ParseDiagnosticArgs(Res.getDiagnosticOpts(), Args, &Diags, 2324 false /*DefaultDiagColor*/); 2325 ParseCommentArgs(LangOpts.CommentOpts, Args); 2326 ParseFileSystemArgs(Res.getFileSystemOpts(), Args); 2327 // FIXME: We shouldn't have to pass the DashX option around here 2328 InputKind DashX = ParseFrontendArgs(Res.getFrontendOpts(), Args, Diags); 2329 ParseTargetArgs(Res.getTargetOpts(), Args, Diags); 2330 Success &= ParseCodeGenArgs(Res.getCodeGenOpts(), Args, DashX, Diags, 2331 Res.getTargetOpts()); 2332 ParseHeaderSearchArgs(Res.getHeaderSearchOpts(), Args); 2333 if (DashX == IK_AST || DashX == IK_LLVM_IR) { 2334 // ObjCAAutoRefCount and Sanitize LangOpts are used to setup the 2335 // PassManager in BackendUtil.cpp. They need to be initializd no matter 2336 // what the input type is. 2337 if (Args.hasArg(OPT_fobjc_arc)) 2338 LangOpts.ObjCAutoRefCount = 1; 2339 // PIClevel and PIELevel are needed during code generation and this should be 2340 // set regardless of the input type. 2341 LangOpts.PICLevel = getLastArgIntValue(Args, OPT_pic_level, 0, Diags); 2342 LangOpts.PIELevel = getLastArgIntValue(Args, OPT_pie_level, 0, Diags); 2343 parseSanitizerKinds("-fsanitize=", Args.getAllArgValues(OPT_fsanitize_EQ), 2344 Diags, LangOpts.Sanitize); 2345 } else { 2346 // Other LangOpts are only initialzed when the input is not AST or LLVM IR. 2347 ParseLangArgs(LangOpts, Args, DashX, Res.getTargetOpts(), 2348 Res.getPreprocessorOpts(), Diags); 2349 if (Res.getFrontendOpts().ProgramAction == frontend::RewriteObjC) 2350 LangOpts.ObjCExceptions = 1; 2351 } 2352 2353 if (LangOpts.CUDA) { 2354 // During CUDA device-side compilation, the aux triple is the 2355 // triple used for host compilation. 2356 if (LangOpts.CUDAIsDevice) 2357 Res.getTargetOpts().HostTriple = Res.getFrontendOpts().AuxTriple; 2358 2359 // Set default FP_CONTRACT to FAST. 2360 if (!Args.hasArg(OPT_ffp_contract)) 2361 Res.getCodeGenOpts().setFPContractMode(CodeGenOptions::FPC_Fast); 2362 } 2363 2364 // FIXME: Override value name discarding when asan or msan is used because the 2365 // backend passes depend on the name of the alloca in order to print out 2366 // names. 2367 Res.getCodeGenOpts().DiscardValueNames &= 2368 !LangOpts.Sanitize.has(SanitizerKind::Address) && 2369 !LangOpts.Sanitize.has(SanitizerKind::Memory); 2370 2371 // FIXME: ParsePreprocessorArgs uses the FileManager to read the contents of 2372 // PCH file and find the original header name. Remove the need to do that in 2373 // ParsePreprocessorArgs and remove the FileManager 2374 // parameters from the function and the "FileManager.h" #include. 2375 FileManager FileMgr(Res.getFileSystemOpts()); 2376 ParsePreprocessorArgs(Res.getPreprocessorOpts(), Args, FileMgr, Diags); 2377 ParsePreprocessorOutputArgs(Res.getPreprocessorOutputOpts(), Args, 2378 Res.getFrontendOpts().ProgramAction); 2379 return Success; 2380 } 2381 2382 std::string CompilerInvocation::getModuleHash() const { 2383 // Note: For QoI reasons, the things we use as a hash here should all be 2384 // dumped via the -module-info flag. 2385 using llvm::hash_code; 2386 using llvm::hash_value; 2387 using llvm::hash_combine; 2388 2389 // Start the signature with the compiler version. 2390 // FIXME: We'd rather use something more cryptographically sound than 2391 // CityHash, but this will do for now. 2392 hash_code code = hash_value(getClangFullRepositoryVersion()); 2393 2394 // Extend the signature with the language options 2395 #define LANGOPT(Name, Bits, Default, Description) \ 2396 code = hash_combine(code, LangOpts->Name); 2397 #define ENUM_LANGOPT(Name, Type, Bits, Default, Description) \ 2398 code = hash_combine(code, static_cast<unsigned>(LangOpts->get##Name())); 2399 #define BENIGN_LANGOPT(Name, Bits, Default, Description) 2400 #define BENIGN_ENUM_LANGOPT(Name, Type, Bits, Default, Description) 2401 #include "clang/Basic/LangOptions.def" 2402 2403 for (StringRef Feature : LangOpts->ModuleFeatures) 2404 code = hash_combine(code, Feature); 2405 2406 // Extend the signature with the target options. 2407 code = hash_combine(code, TargetOpts->Triple, TargetOpts->CPU, 2408 TargetOpts->ABI); 2409 for (unsigned i = 0, n = TargetOpts->FeaturesAsWritten.size(); i != n; ++i) 2410 code = hash_combine(code, TargetOpts->FeaturesAsWritten[i]); 2411 2412 // Extend the signature with preprocessor options. 2413 const PreprocessorOptions &ppOpts = getPreprocessorOpts(); 2414 const HeaderSearchOptions &hsOpts = getHeaderSearchOpts(); 2415 code = hash_combine(code, ppOpts.UsePredefines, ppOpts.DetailedRecord); 2416 2417 for (std::vector<std::pair<std::string, bool/*isUndef*/>>::const_iterator 2418 I = getPreprocessorOpts().Macros.begin(), 2419 IEnd = getPreprocessorOpts().Macros.end(); 2420 I != IEnd; ++I) { 2421 // If we're supposed to ignore this macro for the purposes of modules, 2422 // don't put it into the hash. 2423 if (!hsOpts.ModulesIgnoreMacros.empty()) { 2424 // Check whether we're ignoring this macro. 2425 StringRef MacroDef = I->first; 2426 if (hsOpts.ModulesIgnoreMacros.count(MacroDef.split('=').first)) 2427 continue; 2428 } 2429 2430 code = hash_combine(code, I->first, I->second); 2431 } 2432 2433 // Extend the signature with the sysroot and other header search options. 2434 code = hash_combine(code, hsOpts.Sysroot, 2435 hsOpts.ModuleFormat, 2436 hsOpts.UseDebugInfo, 2437 hsOpts.UseBuiltinIncludes, 2438 hsOpts.UseStandardSystemIncludes, 2439 hsOpts.UseStandardCXXIncludes, 2440 hsOpts.UseLibcxx); 2441 code = hash_combine(code, hsOpts.ResourceDir); 2442 2443 // Extend the signature with the user build path. 2444 code = hash_combine(code, hsOpts.ModuleUserBuildPath); 2445 2446 // Extend the signature with the module file extensions. 2447 const FrontendOptions &frontendOpts = getFrontendOpts(); 2448 for (const auto &ext : frontendOpts.ModuleFileExtensions) { 2449 code = ext->hashExtension(code); 2450 } 2451 2452 // Darwin-specific hack: if we have a sysroot, use the contents and 2453 // modification time of 2454 // $sysroot/System/Library/CoreServices/SystemVersion.plist 2455 // as part of the module hash. 2456 if (!hsOpts.Sysroot.empty()) { 2457 SmallString<128> systemVersionFile; 2458 systemVersionFile += hsOpts.Sysroot; 2459 llvm::sys::path::append(systemVersionFile, "System"); 2460 llvm::sys::path::append(systemVersionFile, "Library"); 2461 llvm::sys::path::append(systemVersionFile, "CoreServices"); 2462 llvm::sys::path::append(systemVersionFile, "SystemVersion.plist"); 2463 2464 llvm::ErrorOr<std::unique_ptr<llvm::MemoryBuffer>> buffer = 2465 llvm::MemoryBuffer::getFile(systemVersionFile); 2466 if (buffer) { 2467 code = hash_combine(code, buffer.get()->getBuffer()); 2468 2469 struct stat statBuf; 2470 if (stat(systemVersionFile.c_str(), &statBuf) == 0) 2471 code = hash_combine(code, statBuf.st_mtime); 2472 } 2473 } 2474 2475 return llvm::APInt(64, code).toString(36, /*Signed=*/false); 2476 } 2477 2478 namespace clang { 2479 2480 template<typename IntTy> 2481 static IntTy getLastArgIntValueImpl(const ArgList &Args, OptSpecifier Id, 2482 IntTy Default, 2483 DiagnosticsEngine *Diags) { 2484 IntTy Res = Default; 2485 if (Arg *A = Args.getLastArg(Id)) { 2486 if (StringRef(A->getValue()).getAsInteger(10, Res)) { 2487 if (Diags) 2488 Diags->Report(diag::err_drv_invalid_int_value) << A->getAsString(Args) 2489 << A->getValue(); 2490 } 2491 } 2492 return Res; 2493 } 2494 2495 2496 // Declared in clang/Frontend/Utils.h. 2497 int getLastArgIntValue(const ArgList &Args, OptSpecifier Id, int Default, 2498 DiagnosticsEngine *Diags) { 2499 return getLastArgIntValueImpl<int>(Args, Id, Default, Diags); 2500 } 2501 2502 uint64_t getLastArgUInt64Value(const ArgList &Args, OptSpecifier Id, 2503 uint64_t Default, 2504 DiagnosticsEngine *Diags) { 2505 return getLastArgIntValueImpl<uint64_t>(Args, Id, Default, Diags); 2506 } 2507 2508 void BuryPointer(const void *Ptr) { 2509 // This function may be called only a small fixed amount of times per each 2510 // invocation, otherwise we do actually have a leak which we want to report. 2511 // If this function is called more than kGraveYardMaxSize times, the pointers 2512 // will not be properly buried and a leak detector will report a leak, which 2513 // is what we want in such case. 2514 static const size_t kGraveYardMaxSize = 16; 2515 LLVM_ATTRIBUTE_UNUSED static const void *GraveYard[kGraveYardMaxSize]; 2516 static std::atomic<unsigned> GraveYardSize; 2517 unsigned Idx = GraveYardSize++; 2518 if (Idx >= kGraveYardMaxSize) 2519 return; 2520 GraveYard[Idx] = Ptr; 2521 } 2522 2523 IntrusiveRefCntPtr<vfs::FileSystem> 2524 createVFSFromCompilerInvocation(const CompilerInvocation &CI, 2525 DiagnosticsEngine &Diags) { 2526 if (CI.getHeaderSearchOpts().VFSOverlayFiles.empty()) 2527 return vfs::getRealFileSystem(); 2528 2529 IntrusiveRefCntPtr<vfs::OverlayFileSystem> 2530 Overlay(new vfs::OverlayFileSystem(vfs::getRealFileSystem())); 2531 // earlier vfs files are on the bottom 2532 for (const std::string &File : CI.getHeaderSearchOpts().VFSOverlayFiles) { 2533 llvm::ErrorOr<std::unique_ptr<llvm::MemoryBuffer>> Buffer = 2534 llvm::MemoryBuffer::getFile(File); 2535 if (!Buffer) { 2536 Diags.Report(diag::err_missing_vfs_overlay_file) << File; 2537 return IntrusiveRefCntPtr<vfs::FileSystem>(); 2538 } 2539 2540 IntrusiveRefCntPtr<vfs::FileSystem> FS = vfs::getVFSFromYAML( 2541 std::move(Buffer.get()), /*DiagHandler*/ nullptr, File); 2542 if (!FS.get()) { 2543 Diags.Report(diag::err_invalid_vfs_overlay) << File; 2544 return IntrusiveRefCntPtr<vfs::FileSystem>(); 2545 } 2546 Overlay->pushOverlay(FS); 2547 } 2548 return Overlay; 2549 } 2550 } // end namespace clang 2551