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