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