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.LTOVisibilityPublicStd = Args.hasArg(OPT_flto_visibility_public_std); 486 Opts.SplitDwarfFile = Args.getLastArgValue(OPT_split_dwarf_file); 487 Opts.DebugTypeExtRefs = Args.hasArg(OPT_dwarf_ext_refs); 488 Opts.DebugExplicitImport = Triple.isPS4CPU(); 489 490 for (const auto &Arg : Args.getAllArgValues(OPT_fdebug_prefix_map_EQ)) 491 Opts.DebugPrefixMap.insert(StringRef(Arg).split('=')); 492 493 if (const Arg *A = 494 Args.getLastArg(OPT_emit_llvm_uselists, OPT_no_emit_llvm_uselists)) 495 Opts.EmitLLVMUseLists = A->getOption().getID() == OPT_emit_llvm_uselists; 496 497 Opts.DisableLLVMOpts = Args.hasArg(OPT_disable_llvm_optzns); 498 Opts.DisableLLVMPasses = Args.hasArg(OPT_disable_llvm_passes); 499 Opts.DisableRedZone = Args.hasArg(OPT_disable_red_zone); 500 Opts.ForbidGuardVariables = Args.hasArg(OPT_fforbid_guard_variables); 501 Opts.UseRegisterSizedBitfieldAccess = Args.hasArg( 502 OPT_fuse_register_sized_bitfield_access); 503 Opts.RelaxedAliasing = Args.hasArg(OPT_relaxed_aliasing); 504 Opts.StructPathTBAA = !Args.hasArg(OPT_no_struct_path_tbaa); 505 Opts.DwarfDebugFlags = Args.getLastArgValue(OPT_dwarf_debug_flags); 506 Opts.MergeAllConstants = !Args.hasArg(OPT_fno_merge_all_constants); 507 Opts.NoCommon = Args.hasArg(OPT_fno_common); 508 Opts.NoImplicitFloat = Args.hasArg(OPT_no_implicit_float); 509 Opts.OptimizeSize = getOptimizationLevelSize(Args); 510 Opts.SimplifyLibCalls = !(Args.hasArg(OPT_fno_builtin) || 511 Args.hasArg(OPT_ffreestanding)); 512 if (Opts.SimplifyLibCalls) 513 getAllNoBuiltinFuncValues(Args, Opts.NoBuiltinFuncs); 514 Opts.UnrollLoops = 515 Args.hasFlag(OPT_funroll_loops, OPT_fno_unroll_loops, 516 (Opts.OptimizationLevel > 1 && !Opts.OptimizeSize)); 517 Opts.RerollLoops = Args.hasArg(OPT_freroll_loops); 518 519 Opts.DisableIntegratedAS = Args.hasArg(OPT_fno_integrated_as); 520 Opts.Autolink = !Args.hasArg(OPT_fno_autolink); 521 Opts.SampleProfileFile = Args.getLastArgValue(OPT_fprofile_sample_use_EQ); 522 523 setPGOInstrumentor(Opts, Args, Diags); 524 Opts.InstrProfileOutput = 525 Args.getLastArgValue(OPT_fprofile_instrument_path_EQ); 526 Opts.ProfileInstrumentUsePath = 527 Args.getLastArgValue(OPT_fprofile_instrument_use_path_EQ); 528 if (!Opts.ProfileInstrumentUsePath.empty()) 529 setPGOUseInstrumentor(Opts, Opts.ProfileInstrumentUsePath); 530 531 Opts.CoverageMapping = 532 Args.hasFlag(OPT_fcoverage_mapping, OPT_fno_coverage_mapping, false); 533 Opts.DumpCoverageMapping = Args.hasArg(OPT_dump_coverage_mapping); 534 Opts.AsmVerbose = Args.hasArg(OPT_masm_verbose); 535 Opts.AssumeSaneOperatorNew = !Args.hasArg(OPT_fno_assume_sane_operator_new); 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 Opts.LessPreciseFPMAD = Args.hasArg(OPT_cl_mad_enable); 548 Opts.LimitFloatPrecision = Args.getLastArgValue(OPT_mlimit_float_precision); 549 Opts.NoInfsFPMath = (Args.hasArg(OPT_menable_no_infinities) || 550 Args.hasArg(OPT_cl_finite_math_only) || 551 Args.hasArg(OPT_cl_fast_relaxed_math)); 552 Opts.NoNaNsFPMath = (Args.hasArg(OPT_menable_no_nans) || 553 Args.hasArg(OPT_cl_unsafe_math_optimizations) || 554 Args.hasArg(OPT_cl_finite_math_only) || 555 Args.hasArg(OPT_cl_fast_relaxed_math)); 556 Opts.NoSignedZeros = Args.hasArg(OPT_fno_signed_zeros); 557 Opts.ReciprocalMath = Args.hasArg(OPT_freciprocal_math); 558 Opts.NoZeroInitializedInBSS = Args.hasArg(OPT_mno_zero_initialized_in_bss); 559 Opts.BackendOptions = Args.getAllArgValues(OPT_backend_option); 560 Opts.NumRegisterParameters = getLastArgIntValue(Args, OPT_mregparm, 0, Diags); 561 Opts.NoExecStack = Args.hasArg(OPT_mno_exec_stack); 562 Opts.FatalWarnings = Args.hasArg(OPT_massembler_fatal_warnings); 563 Opts.EnableSegmentedStacks = Args.hasArg(OPT_split_stacks); 564 Opts.RelaxAll = Args.hasArg(OPT_mrelax_all); 565 Opts.IncrementalLinkerCompatible = 566 Args.hasArg(OPT_mincremental_linker_compatible); 567 Opts.OmitLeafFramePointer = Args.hasArg(OPT_momit_leaf_frame_pointer); 568 Opts.SaveTempLabels = Args.hasArg(OPT_msave_temp_labels); 569 Opts.NoDwarfDirectoryAsm = Args.hasArg(OPT_fno_dwarf_directory_asm); 570 Opts.SoftFloat = Args.hasArg(OPT_msoft_float); 571 Opts.StrictEnums = Args.hasArg(OPT_fstrict_enums); 572 Opts.StrictVTablePointers = Args.hasArg(OPT_fstrict_vtable_pointers); 573 Opts.UnsafeFPMath = Args.hasArg(OPT_menable_unsafe_fp_math) || 574 Args.hasArg(OPT_cl_unsafe_math_optimizations) || 575 Args.hasArg(OPT_cl_fast_relaxed_math); 576 Opts.UnwindTables = Args.hasArg(OPT_munwind_tables); 577 Opts.RelocationModel = Args.getLastArgValue(OPT_mrelocation_model, "pic"); 578 Opts.ThreadModel = Args.getLastArgValue(OPT_mthread_model, "posix"); 579 if (Opts.ThreadModel != "posix" && Opts.ThreadModel != "single") 580 Diags.Report(diag::err_drv_invalid_value) 581 << Args.getLastArg(OPT_mthread_model)->getAsString(Args) 582 << Opts.ThreadModel; 583 Opts.TrapFuncName = Args.getLastArgValue(OPT_ftrap_function_EQ); 584 Opts.UseInitArray = Args.hasArg(OPT_fuse_init_array); 585 586 Opts.FunctionSections = Args.hasFlag(OPT_ffunction_sections, 587 OPT_fno_function_sections, false); 588 Opts.DataSections = Args.hasFlag(OPT_fdata_sections, 589 OPT_fno_data_sections, false); 590 Opts.UniqueSectionNames = Args.hasFlag(OPT_funique_section_names, 591 OPT_fno_unique_section_names, true); 592 593 Opts.MergeFunctions = Args.hasArg(OPT_fmerge_functions); 594 595 Opts.NoUseJumpTables = Args.hasArg(OPT_fno_jump_tables); 596 597 Opts.PrepareForLTO = Args.hasArg(OPT_flto, OPT_flto_EQ); 598 const Arg *A = Args.getLastArg(OPT_flto, OPT_flto_EQ); 599 Opts.EmitSummaryIndex = A && A->containsValue("thin"); 600 if (Arg *A = Args.getLastArg(OPT_fthinlto_index_EQ)) { 601 if (IK != IK_LLVM_IR) 602 Diags.Report(diag::err_drv_argument_only_allowed_with) 603 << A->getAsString(Args) << "-x ir"; 604 Opts.ThinLTOIndexFile = Args.getLastArgValue(OPT_fthinlto_index_EQ); 605 } 606 607 Opts.MSVolatile = Args.hasArg(OPT_fms_volatile); 608 609 Opts.VectorizeBB = Args.hasArg(OPT_vectorize_slp_aggressive); 610 Opts.VectorizeLoop = Args.hasArg(OPT_vectorize_loops); 611 Opts.VectorizeSLP = Args.hasArg(OPT_vectorize_slp); 612 613 Opts.MainFileName = Args.getLastArgValue(OPT_main_file_name); 614 Opts.VerifyModule = !Args.hasArg(OPT_disable_llvm_verifier); 615 616 Opts.DisableGCov = Args.hasArg(OPT_test_coverage); 617 Opts.EmitGcovArcs = Args.hasArg(OPT_femit_coverage_data); 618 Opts.EmitGcovNotes = Args.hasArg(OPT_femit_coverage_notes); 619 if (Opts.EmitGcovArcs || Opts.EmitGcovNotes) { 620 Opts.CoverageFile = Args.getLastArgValue(OPT_coverage_file); 621 Opts.CoverageExtraChecksum = Args.hasArg(OPT_coverage_cfg_checksum); 622 Opts.CoverageNoFunctionNamesInData = 623 Args.hasArg(OPT_coverage_no_function_names_in_data); 624 Opts.CoverageExitBlockBeforeBody = 625 Args.hasArg(OPT_coverage_exit_block_before_body); 626 if (Args.hasArg(OPT_coverage_version_EQ)) { 627 StringRef CoverageVersion = Args.getLastArgValue(OPT_coverage_version_EQ); 628 if (CoverageVersion.size() != 4) { 629 Diags.Report(diag::err_drv_invalid_value) 630 << Args.getLastArg(OPT_coverage_version_EQ)->getAsString(Args) 631 << CoverageVersion; 632 } else { 633 memcpy(Opts.CoverageVersion, CoverageVersion.data(), 4); 634 } 635 } 636 } 637 638 Opts.InstrumentFunctions = Args.hasArg(OPT_finstrument_functions); 639 Opts.InstrumentForProfiling = Args.hasArg(OPT_pg); 640 Opts.EmitOpenCLArgMetadata = Args.hasArg(OPT_cl_kernel_arg_info); 641 Opts.CompressDebugSections = Args.hasArg(OPT_compress_debug_sections); 642 Opts.DebugCompilationDir = Args.getLastArgValue(OPT_fdebug_compilation_dir); 643 for (auto A : Args.filtered(OPT_mlink_bitcode_file, OPT_mlink_cuda_bitcode)) { 644 unsigned LinkFlags = llvm::Linker::Flags::None; 645 if (A->getOption().matches(OPT_mlink_cuda_bitcode)) 646 LinkFlags = llvm::Linker::Flags::LinkOnlyNeeded | 647 llvm::Linker::Flags::InternalizeLinkedSymbols; 648 Opts.LinkBitcodeFiles.push_back(std::make_pair(LinkFlags, A->getValue())); 649 } 650 Opts.SanitizeCoverageType = 651 getLastArgIntValue(Args, OPT_fsanitize_coverage_type, 0, Diags); 652 Opts.SanitizeCoverageIndirectCalls = 653 Args.hasArg(OPT_fsanitize_coverage_indirect_calls); 654 Opts.SanitizeCoverageTraceBB = Args.hasArg(OPT_fsanitize_coverage_trace_bb); 655 Opts.SanitizeCoverageTraceCmp = Args.hasArg(OPT_fsanitize_coverage_trace_cmp); 656 Opts.SanitizeCoverage8bitCounters = 657 Args.hasArg(OPT_fsanitize_coverage_8bit_counters); 658 Opts.SanitizeCoverageTracePC = Args.hasArg(OPT_fsanitize_coverage_trace_pc); 659 Opts.SanitizeMemoryTrackOrigins = 660 getLastArgIntValue(Args, OPT_fsanitize_memory_track_origins_EQ, 0, Diags); 661 Opts.SanitizeMemoryUseAfterDtor = 662 Args.hasArg(OPT_fsanitize_memory_use_after_dtor); 663 Opts.SanitizeCfiCrossDso = Args.hasArg(OPT_fsanitize_cfi_cross_dso); 664 Opts.SanitizeStats = Args.hasArg(OPT_fsanitize_stats); 665 Opts.SSPBufferSize = 666 getLastArgIntValue(Args, OPT_stack_protector_buffer_size, 8, Diags); 667 Opts.StackRealignment = Args.hasArg(OPT_mstackrealign); 668 if (Arg *A = Args.getLastArg(OPT_mstack_alignment)) { 669 StringRef Val = A->getValue(); 670 unsigned StackAlignment = Opts.StackAlignment; 671 Val.getAsInteger(10, StackAlignment); 672 Opts.StackAlignment = StackAlignment; 673 } 674 675 if (Arg *A = Args.getLastArg(OPT_mstack_probe_size)) { 676 StringRef Val = A->getValue(); 677 unsigned StackProbeSize = Opts.StackProbeSize; 678 Val.getAsInteger(0, StackProbeSize); 679 Opts.StackProbeSize = StackProbeSize; 680 } 681 682 if (Arg *A = Args.getLastArg(OPT_fobjc_dispatch_method_EQ)) { 683 StringRef Name = A->getValue(); 684 unsigned Method = llvm::StringSwitch<unsigned>(Name) 685 .Case("legacy", CodeGenOptions::Legacy) 686 .Case("non-legacy", CodeGenOptions::NonLegacy) 687 .Case("mixed", CodeGenOptions::Mixed) 688 .Default(~0U); 689 if (Method == ~0U) { 690 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Name; 691 Success = false; 692 } else { 693 Opts.setObjCDispatchMethod( 694 static_cast<CodeGenOptions::ObjCDispatchMethodKind>(Method)); 695 } 696 } 697 698 Opts.EmulatedTLS = 699 Args.hasFlag(OPT_femulated_tls, OPT_fno_emulated_tls, false); 700 701 if (Arg *A = Args.getLastArg(OPT_ftlsmodel_EQ)) { 702 StringRef Name = A->getValue(); 703 unsigned Model = llvm::StringSwitch<unsigned>(Name) 704 .Case("global-dynamic", CodeGenOptions::GeneralDynamicTLSModel) 705 .Case("local-dynamic", CodeGenOptions::LocalDynamicTLSModel) 706 .Case("initial-exec", CodeGenOptions::InitialExecTLSModel) 707 .Case("local-exec", CodeGenOptions::LocalExecTLSModel) 708 .Default(~0U); 709 if (Model == ~0U) { 710 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Name; 711 Success = false; 712 } else { 713 Opts.setDefaultTLSModel(static_cast<CodeGenOptions::TLSModel>(Model)); 714 } 715 } 716 717 if (Arg *A = Args.getLastArg(OPT_ffp_contract)) { 718 StringRef Val = A->getValue(); 719 if (Val == "fast") 720 Opts.setFPContractMode(CodeGenOptions::FPC_Fast); 721 else if (Val == "on") 722 Opts.setFPContractMode(CodeGenOptions::FPC_On); 723 else if (Val == "off") 724 Opts.setFPContractMode(CodeGenOptions::FPC_Off); 725 else 726 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Val; 727 } 728 729 if (Arg *A = Args.getLastArg(OPT_fpcc_struct_return, OPT_freg_struct_return)) { 730 if (A->getOption().matches(OPT_fpcc_struct_return)) { 731 Opts.setStructReturnConvention(CodeGenOptions::SRCK_OnStack); 732 } else { 733 assert(A->getOption().matches(OPT_freg_struct_return)); 734 Opts.setStructReturnConvention(CodeGenOptions::SRCK_InRegs); 735 } 736 } 737 738 Opts.DependentLibraries = Args.getAllArgValues(OPT_dependent_lib); 739 Opts.LinkerOptions = Args.getAllArgValues(OPT_linker_option); 740 bool NeedLocTracking = false; 741 742 if (Arg *A = Args.getLastArg(OPT_Rpass_EQ)) { 743 Opts.OptimizationRemarkPattern = 744 GenerateOptimizationRemarkRegex(Diags, Args, A); 745 NeedLocTracking = true; 746 } 747 748 if (Arg *A = Args.getLastArg(OPT_Rpass_missed_EQ)) { 749 Opts.OptimizationRemarkMissedPattern = 750 GenerateOptimizationRemarkRegex(Diags, Args, A); 751 NeedLocTracking = true; 752 } 753 754 if (Arg *A = Args.getLastArg(OPT_Rpass_analysis_EQ)) { 755 Opts.OptimizationRemarkAnalysisPattern = 756 GenerateOptimizationRemarkRegex(Diags, Args, A); 757 NeedLocTracking = true; 758 } 759 760 // If the user requested to use a sample profile for PGO, then the 761 // backend will need to track source location information so the profile 762 // can be incorporated into the IR. 763 if (!Opts.SampleProfileFile.empty()) 764 NeedLocTracking = true; 765 766 // If the user requested a flag that requires source locations available in 767 // the backend, make sure that the backend tracks source location information. 768 if (NeedLocTracking && Opts.getDebugInfo() == codegenoptions::NoDebugInfo) 769 Opts.setDebugInfo(codegenoptions::LocTrackingOnly); 770 771 Opts.RewriteMapFiles = Args.getAllArgValues(OPT_frewrite_map_file); 772 773 // Parse -fsanitize-recover= arguments. 774 // FIXME: Report unrecoverable sanitizers incorrectly specified here. 775 parseSanitizerKinds("-fsanitize-recover=", 776 Args.getAllArgValues(OPT_fsanitize_recover_EQ), Diags, 777 Opts.SanitizeRecover); 778 parseSanitizerKinds("-fsanitize-trap=", 779 Args.getAllArgValues(OPT_fsanitize_trap_EQ), Diags, 780 Opts.SanitizeTrap); 781 782 Opts.CudaGpuBinaryFileNames = 783 Args.getAllArgValues(OPT_fcuda_include_gpubinary); 784 785 return Success; 786 } 787 788 static void ParseDependencyOutputArgs(DependencyOutputOptions &Opts, 789 ArgList &Args) { 790 using namespace options; 791 Opts.OutputFile = Args.getLastArgValue(OPT_dependency_file); 792 Opts.Targets = Args.getAllArgValues(OPT_MT); 793 Opts.IncludeSystemHeaders = Args.hasArg(OPT_sys_header_deps); 794 Opts.IncludeModuleFiles = Args.hasArg(OPT_module_file_deps); 795 Opts.UsePhonyTargets = Args.hasArg(OPT_MP); 796 Opts.ShowHeaderIncludes = Args.hasArg(OPT_H); 797 Opts.HeaderIncludeOutputFile = Args.getLastArgValue(OPT_header_include_file); 798 Opts.AddMissingHeaderDeps = Args.hasArg(OPT_MG); 799 Opts.PrintShowIncludes = Args.hasArg(OPT_show_includes); 800 Opts.DOTOutputFile = Args.getLastArgValue(OPT_dependency_dot); 801 Opts.ModuleDependencyOutputDir = 802 Args.getLastArgValue(OPT_module_dependency_dir); 803 if (Args.hasArg(OPT_MV)) 804 Opts.OutputFormat = DependencyOutputFormat::NMake; 805 // Add sanitizer blacklists as extra dependencies. 806 // They won't be discovered by the regular preprocessor, so 807 // we let make / ninja to know about this implicit dependency. 808 Opts.ExtraDeps = Args.getAllArgValues(OPT_fdepfile_entry); 809 auto ModuleFiles = Args.getAllArgValues(OPT_fmodule_file); 810 Opts.ExtraDeps.insert(Opts.ExtraDeps.end(), ModuleFiles.begin(), 811 ModuleFiles.end()); 812 } 813 814 bool clang::ParseDiagnosticArgs(DiagnosticOptions &Opts, ArgList &Args, 815 DiagnosticsEngine *Diags) { 816 using namespace options; 817 bool Success = true; 818 819 Opts.DiagnosticLogFile = Args.getLastArgValue(OPT_diagnostic_log_file); 820 if (Arg *A = 821 Args.getLastArg(OPT_diagnostic_serialized_file, OPT__serialize_diags)) 822 Opts.DiagnosticSerializationFile = A->getValue(); 823 Opts.IgnoreWarnings = Args.hasArg(OPT_w); 824 Opts.NoRewriteMacros = Args.hasArg(OPT_Wno_rewrite_macros); 825 Opts.Pedantic = Args.hasArg(OPT_pedantic); 826 Opts.PedanticErrors = Args.hasArg(OPT_pedantic_errors); 827 Opts.ShowCarets = !Args.hasArg(OPT_fno_caret_diagnostics); 828 Opts.ShowColors = Args.hasArg(OPT_fcolor_diagnostics); 829 Opts.ShowColumn = Args.hasFlag(OPT_fshow_column, 830 OPT_fno_show_column, 831 /*Default=*/true); 832 Opts.ShowFixits = !Args.hasArg(OPT_fno_diagnostics_fixit_info); 833 Opts.ShowLocation = !Args.hasArg(OPT_fno_show_source_location); 834 Opts.ShowOptionNames = Args.hasArg(OPT_fdiagnostics_show_option); 835 836 llvm::sys::Process::UseANSIEscapeCodes(Args.hasArg(OPT_fansi_escape_codes)); 837 838 // Default behavior is to not to show note include stacks. 839 Opts.ShowNoteIncludeStack = false; 840 if (Arg *A = Args.getLastArg(OPT_fdiagnostics_show_note_include_stack, 841 OPT_fno_diagnostics_show_note_include_stack)) 842 if (A->getOption().matches(OPT_fdiagnostics_show_note_include_stack)) 843 Opts.ShowNoteIncludeStack = true; 844 845 StringRef ShowOverloads = 846 Args.getLastArgValue(OPT_fshow_overloads_EQ, "all"); 847 if (ShowOverloads == "best") 848 Opts.setShowOverloads(Ovl_Best); 849 else if (ShowOverloads == "all") 850 Opts.setShowOverloads(Ovl_All); 851 else { 852 Success = false; 853 if (Diags) 854 Diags->Report(diag::err_drv_invalid_value) 855 << Args.getLastArg(OPT_fshow_overloads_EQ)->getAsString(Args) 856 << ShowOverloads; 857 } 858 859 StringRef ShowCategory = 860 Args.getLastArgValue(OPT_fdiagnostics_show_category, "none"); 861 if (ShowCategory == "none") 862 Opts.ShowCategories = 0; 863 else if (ShowCategory == "id") 864 Opts.ShowCategories = 1; 865 else if (ShowCategory == "name") 866 Opts.ShowCategories = 2; 867 else { 868 Success = false; 869 if (Diags) 870 Diags->Report(diag::err_drv_invalid_value) 871 << Args.getLastArg(OPT_fdiagnostics_show_category)->getAsString(Args) 872 << ShowCategory; 873 } 874 875 StringRef Format = 876 Args.getLastArgValue(OPT_fdiagnostics_format, "clang"); 877 if (Format == "clang") 878 Opts.setFormat(DiagnosticOptions::Clang); 879 else if (Format == "msvc") 880 Opts.setFormat(DiagnosticOptions::MSVC); 881 else if (Format == "msvc-fallback") { 882 Opts.setFormat(DiagnosticOptions::MSVC); 883 Opts.CLFallbackMode = true; 884 } else if (Format == "vi") 885 Opts.setFormat(DiagnosticOptions::Vi); 886 else { 887 Success = false; 888 if (Diags) 889 Diags->Report(diag::err_drv_invalid_value) 890 << Args.getLastArg(OPT_fdiagnostics_format)->getAsString(Args) 891 << Format; 892 } 893 894 Opts.ShowSourceRanges = Args.hasArg(OPT_fdiagnostics_print_source_range_info); 895 Opts.ShowParseableFixits = Args.hasArg(OPT_fdiagnostics_parseable_fixits); 896 Opts.ShowPresumedLoc = !Args.hasArg(OPT_fno_diagnostics_use_presumed_location); 897 Opts.VerifyDiagnostics = Args.hasArg(OPT_verify); 898 DiagnosticLevelMask DiagMask = DiagnosticLevelMask::None; 899 Success &= parseDiagnosticLevelMask("-verify-ignore-unexpected=", 900 Args.getAllArgValues(OPT_verify_ignore_unexpected_EQ), 901 Diags, DiagMask); 902 if (Args.hasArg(OPT_verify_ignore_unexpected)) 903 DiagMask = DiagnosticLevelMask::All; 904 Opts.setVerifyIgnoreUnexpected(DiagMask); 905 Opts.ElideType = !Args.hasArg(OPT_fno_elide_type); 906 Opts.ShowTemplateTree = Args.hasArg(OPT_fdiagnostics_show_template_tree); 907 Opts.ErrorLimit = getLastArgIntValue(Args, OPT_ferror_limit, 0, Diags); 908 Opts.MacroBacktraceLimit = 909 getLastArgIntValue(Args, OPT_fmacro_backtrace_limit, 910 DiagnosticOptions::DefaultMacroBacktraceLimit, Diags); 911 Opts.TemplateBacktraceLimit = getLastArgIntValue( 912 Args, OPT_ftemplate_backtrace_limit, 913 DiagnosticOptions::DefaultTemplateBacktraceLimit, Diags); 914 Opts.ConstexprBacktraceLimit = getLastArgIntValue( 915 Args, OPT_fconstexpr_backtrace_limit, 916 DiagnosticOptions::DefaultConstexprBacktraceLimit, Diags); 917 Opts.SpellCheckingLimit = getLastArgIntValue( 918 Args, OPT_fspell_checking_limit, 919 DiagnosticOptions::DefaultSpellCheckingLimit, Diags); 920 Opts.TabStop = getLastArgIntValue(Args, OPT_ftabstop, 921 DiagnosticOptions::DefaultTabStop, Diags); 922 if (Opts.TabStop == 0 || Opts.TabStop > DiagnosticOptions::MaxTabStop) { 923 Opts.TabStop = DiagnosticOptions::DefaultTabStop; 924 if (Diags) 925 Diags->Report(diag::warn_ignoring_ftabstop_value) 926 << Opts.TabStop << DiagnosticOptions::DefaultTabStop; 927 } 928 Opts.MessageLength = getLastArgIntValue(Args, OPT_fmessage_length, 0, Diags); 929 addDiagnosticArgs(Args, OPT_W_Group, OPT_W_value_Group, Opts.Warnings); 930 addDiagnosticArgs(Args, OPT_R_Group, OPT_R_value_Group, Opts.Remarks); 931 932 return Success; 933 } 934 935 static void ParseFileSystemArgs(FileSystemOptions &Opts, ArgList &Args) { 936 Opts.WorkingDir = Args.getLastArgValue(OPT_working_directory); 937 } 938 939 /// Parse the argument to the -ftest-module-file-extension 940 /// command-line argument. 941 /// 942 /// \returns true on error, false on success. 943 static bool parseTestModuleFileExtensionArg(StringRef Arg, 944 std::string &BlockName, 945 unsigned &MajorVersion, 946 unsigned &MinorVersion, 947 bool &Hashed, 948 std::string &UserInfo) { 949 SmallVector<StringRef, 5> Args; 950 Arg.split(Args, ':', 5); 951 if (Args.size() < 5) 952 return true; 953 954 BlockName = Args[0]; 955 if (Args[1].getAsInteger(10, MajorVersion)) return true; 956 if (Args[2].getAsInteger(10, MinorVersion)) return true; 957 if (Args[3].getAsInteger(2, Hashed)) return true; 958 if (Args.size() > 4) 959 UserInfo = Args[4]; 960 return false; 961 } 962 963 static InputKind ParseFrontendArgs(FrontendOptions &Opts, ArgList &Args, 964 DiagnosticsEngine &Diags) { 965 using namespace options; 966 Opts.ProgramAction = frontend::ParseSyntaxOnly; 967 if (const Arg *A = Args.getLastArg(OPT_Action_Group)) { 968 switch (A->getOption().getID()) { 969 default: 970 llvm_unreachable("Invalid option in group!"); 971 case OPT_ast_list: 972 Opts.ProgramAction = frontend::ASTDeclList; break; 973 case OPT_ast_dump: 974 case OPT_ast_dump_lookups: 975 Opts.ProgramAction = frontend::ASTDump; break; 976 case OPT_ast_print: 977 Opts.ProgramAction = frontend::ASTPrint; break; 978 case OPT_ast_view: 979 Opts.ProgramAction = frontend::ASTView; break; 980 case OPT_dump_raw_tokens: 981 Opts.ProgramAction = frontend::DumpRawTokens; break; 982 case OPT_dump_tokens: 983 Opts.ProgramAction = frontend::DumpTokens; break; 984 case OPT_S: 985 Opts.ProgramAction = frontend::EmitAssembly; break; 986 case OPT_emit_llvm_bc: 987 Opts.ProgramAction = frontend::EmitBC; break; 988 case OPT_emit_html: 989 Opts.ProgramAction = frontend::EmitHTML; break; 990 case OPT_emit_llvm: 991 Opts.ProgramAction = frontend::EmitLLVM; break; 992 case OPT_emit_llvm_only: 993 Opts.ProgramAction = frontend::EmitLLVMOnly; break; 994 case OPT_emit_codegen_only: 995 Opts.ProgramAction = frontend::EmitCodeGenOnly; break; 996 case OPT_emit_obj: 997 Opts.ProgramAction = frontend::EmitObj; break; 998 case OPT_fixit_EQ: 999 Opts.FixItSuffix = A->getValue(); 1000 // fall-through! 1001 case OPT_fixit: 1002 Opts.ProgramAction = frontend::FixIt; break; 1003 case OPT_emit_module: 1004 Opts.ProgramAction = frontend::GenerateModule; break; 1005 case OPT_emit_pch: 1006 Opts.ProgramAction = frontend::GeneratePCH; break; 1007 case OPT_emit_pth: 1008 Opts.ProgramAction = frontend::GeneratePTH; break; 1009 case OPT_init_only: 1010 Opts.ProgramAction = frontend::InitOnly; break; 1011 case OPT_fsyntax_only: 1012 Opts.ProgramAction = frontend::ParseSyntaxOnly; break; 1013 case OPT_module_file_info: 1014 Opts.ProgramAction = frontend::ModuleFileInfo; break; 1015 case OPT_verify_pch: 1016 Opts.ProgramAction = frontend::VerifyPCH; break; 1017 case OPT_print_decl_contexts: 1018 Opts.ProgramAction = frontend::PrintDeclContext; break; 1019 case OPT_print_preamble: 1020 Opts.ProgramAction = frontend::PrintPreamble; break; 1021 case OPT_E: 1022 Opts.ProgramAction = frontend::PrintPreprocessedInput; break; 1023 case OPT_rewrite_macros: 1024 Opts.ProgramAction = frontend::RewriteMacros; break; 1025 case OPT_rewrite_objc: 1026 Opts.ProgramAction = frontend::RewriteObjC; break; 1027 case OPT_rewrite_test: 1028 Opts.ProgramAction = frontend::RewriteTest; break; 1029 case OPT_analyze: 1030 Opts.ProgramAction = frontend::RunAnalysis; break; 1031 case OPT_migrate: 1032 Opts.ProgramAction = frontend::MigrateSource; break; 1033 case OPT_Eonly: 1034 Opts.ProgramAction = frontend::RunPreprocessorOnly; break; 1035 } 1036 } 1037 1038 if (const Arg* A = Args.getLastArg(OPT_plugin)) { 1039 Opts.Plugins.emplace_back(A->getValue(0)); 1040 Opts.ProgramAction = frontend::PluginAction; 1041 Opts.ActionName = A->getValue(); 1042 } 1043 Opts.AddPluginActions = Args.getAllArgValues(OPT_add_plugin); 1044 for (const Arg *AA : Args.filtered(OPT_plugin_arg)) 1045 Opts.PluginArgs[AA->getValue(0)].emplace_back(AA->getValue(1)); 1046 1047 for (const std::string &Arg : 1048 Args.getAllArgValues(OPT_ftest_module_file_extension_EQ)) { 1049 std::string BlockName; 1050 unsigned MajorVersion; 1051 unsigned MinorVersion; 1052 bool Hashed; 1053 std::string UserInfo; 1054 if (parseTestModuleFileExtensionArg(Arg, BlockName, MajorVersion, 1055 MinorVersion, Hashed, UserInfo)) { 1056 Diags.Report(diag::err_test_module_file_extension_format) << Arg; 1057 1058 continue; 1059 } 1060 1061 // Add the testing module file extension. 1062 Opts.ModuleFileExtensions.push_back( 1063 new TestModuleFileExtension(BlockName, MajorVersion, MinorVersion, 1064 Hashed, UserInfo)); 1065 } 1066 1067 if (const Arg *A = Args.getLastArg(OPT_code_completion_at)) { 1068 Opts.CodeCompletionAt = 1069 ParsedSourceLocation::FromString(A->getValue()); 1070 if (Opts.CodeCompletionAt.FileName.empty()) 1071 Diags.Report(diag::err_drv_invalid_value) 1072 << A->getAsString(Args) << A->getValue(); 1073 } 1074 Opts.DisableFree = Args.hasArg(OPT_disable_free); 1075 1076 Opts.OutputFile = Args.getLastArgValue(OPT_o); 1077 Opts.Plugins = Args.getAllArgValues(OPT_load); 1078 Opts.RelocatablePCH = Args.hasArg(OPT_relocatable_pch); 1079 Opts.ShowHelp = Args.hasArg(OPT_help); 1080 Opts.ShowStats = Args.hasArg(OPT_print_stats); 1081 Opts.ShowTimers = Args.hasArg(OPT_ftime_report); 1082 Opts.ShowVersion = Args.hasArg(OPT_version); 1083 Opts.ASTMergeFiles = Args.getAllArgValues(OPT_ast_merge); 1084 Opts.LLVMArgs = Args.getAllArgValues(OPT_mllvm); 1085 Opts.FixWhatYouCan = Args.hasArg(OPT_fix_what_you_can); 1086 Opts.FixOnlyWarnings = Args.hasArg(OPT_fix_only_warnings); 1087 Opts.FixAndRecompile = Args.hasArg(OPT_fixit_recompile); 1088 Opts.FixToTemporaries = Args.hasArg(OPT_fixit_to_temp); 1089 Opts.ASTDumpDecls = Args.hasArg(OPT_ast_dump); 1090 Opts.ASTDumpFilter = Args.getLastArgValue(OPT_ast_dump_filter); 1091 Opts.ASTDumpLookups = Args.hasArg(OPT_ast_dump_lookups); 1092 Opts.UseGlobalModuleIndex = !Args.hasArg(OPT_fno_modules_global_index); 1093 Opts.GenerateGlobalModuleIndex = Opts.UseGlobalModuleIndex; 1094 Opts.ModuleMapFiles = Args.getAllArgValues(OPT_fmodule_map_file); 1095 Opts.ModuleFiles = Args.getAllArgValues(OPT_fmodule_file); 1096 Opts.ModulesEmbedFiles = Args.getAllArgValues(OPT_fmodules_embed_file_EQ); 1097 Opts.ModulesEmbedAllFiles = Args.hasArg(OPT_fmodules_embed_all_files); 1098 1099 Opts.CodeCompleteOpts.IncludeMacros 1100 = Args.hasArg(OPT_code_completion_macros); 1101 Opts.CodeCompleteOpts.IncludeCodePatterns 1102 = Args.hasArg(OPT_code_completion_patterns); 1103 Opts.CodeCompleteOpts.IncludeGlobals 1104 = !Args.hasArg(OPT_no_code_completion_globals); 1105 Opts.CodeCompleteOpts.IncludeBriefComments 1106 = Args.hasArg(OPT_code_completion_brief_comments); 1107 1108 Opts.OverrideRecordLayoutsFile 1109 = Args.getLastArgValue(OPT_foverride_record_layout_EQ); 1110 Opts.AuxTriple = 1111 llvm::Triple::normalize(Args.getLastArgValue(OPT_aux_triple)); 1112 Opts.FindPchSource = Args.getLastArgValue(OPT_find_pch_source_EQ); 1113 1114 if (const Arg *A = Args.getLastArg(OPT_arcmt_check, 1115 OPT_arcmt_modify, 1116 OPT_arcmt_migrate)) { 1117 switch (A->getOption().getID()) { 1118 default: 1119 llvm_unreachable("missed a case"); 1120 case OPT_arcmt_check: 1121 Opts.ARCMTAction = FrontendOptions::ARCMT_Check; 1122 break; 1123 case OPT_arcmt_modify: 1124 Opts.ARCMTAction = FrontendOptions::ARCMT_Modify; 1125 break; 1126 case OPT_arcmt_migrate: 1127 Opts.ARCMTAction = FrontendOptions::ARCMT_Migrate; 1128 break; 1129 } 1130 } 1131 Opts.MTMigrateDir = Args.getLastArgValue(OPT_mt_migrate_directory); 1132 Opts.ARCMTMigrateReportOut 1133 = Args.getLastArgValue(OPT_arcmt_migrate_report_output); 1134 Opts.ARCMTMigrateEmitARCErrors 1135 = Args.hasArg(OPT_arcmt_migrate_emit_arc_errors); 1136 1137 if (Args.hasArg(OPT_objcmt_migrate_literals)) 1138 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_Literals; 1139 if (Args.hasArg(OPT_objcmt_migrate_subscripting)) 1140 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_Subscripting; 1141 if (Args.hasArg(OPT_objcmt_migrate_property_dot_syntax)) 1142 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_PropertyDotSyntax; 1143 if (Args.hasArg(OPT_objcmt_migrate_property)) 1144 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_Property; 1145 if (Args.hasArg(OPT_objcmt_migrate_readonly_property)) 1146 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_ReadonlyProperty; 1147 if (Args.hasArg(OPT_objcmt_migrate_readwrite_property)) 1148 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_ReadwriteProperty; 1149 if (Args.hasArg(OPT_objcmt_migrate_annotation)) 1150 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_Annotation; 1151 if (Args.hasArg(OPT_objcmt_returns_innerpointer_property)) 1152 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_ReturnsInnerPointerProperty; 1153 if (Args.hasArg(OPT_objcmt_migrate_instancetype)) 1154 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_Instancetype; 1155 if (Args.hasArg(OPT_objcmt_migrate_nsmacros)) 1156 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_NsMacros; 1157 if (Args.hasArg(OPT_objcmt_migrate_protocol_conformance)) 1158 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_ProtocolConformance; 1159 if (Args.hasArg(OPT_objcmt_atomic_property)) 1160 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_AtomicProperty; 1161 if (Args.hasArg(OPT_objcmt_ns_nonatomic_iosonly)) 1162 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_NsAtomicIOSOnlyProperty; 1163 if (Args.hasArg(OPT_objcmt_migrate_designated_init)) 1164 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_DesignatedInitializer; 1165 if (Args.hasArg(OPT_objcmt_migrate_all)) 1166 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_MigrateDecls; 1167 1168 Opts.ObjCMTWhiteListPath = Args.getLastArgValue(OPT_objcmt_whitelist_dir_path); 1169 1170 if (Opts.ARCMTAction != FrontendOptions::ARCMT_None && 1171 Opts.ObjCMTAction != FrontendOptions::ObjCMT_None) { 1172 Diags.Report(diag::err_drv_argument_not_allowed_with) 1173 << "ARC migration" << "ObjC migration"; 1174 } 1175 1176 InputKind DashX = IK_None; 1177 if (const Arg *A = Args.getLastArg(OPT_x)) { 1178 DashX = llvm::StringSwitch<InputKind>(A->getValue()) 1179 .Case("c", IK_C) 1180 .Case("cl", IK_OpenCL) 1181 .Case("cuda", IK_CUDA) 1182 .Case("c++", IK_CXX) 1183 .Case("objective-c", IK_ObjC) 1184 .Case("objective-c++", IK_ObjCXX) 1185 .Case("cpp-output", IK_PreprocessedC) 1186 .Case("assembler-with-cpp", IK_Asm) 1187 .Case("c++-cpp-output", IK_PreprocessedCXX) 1188 .Case("cuda-cpp-output", IK_PreprocessedCuda) 1189 .Case("objective-c-cpp-output", IK_PreprocessedObjC) 1190 .Case("objc-cpp-output", IK_PreprocessedObjC) 1191 .Case("objective-c++-cpp-output", IK_PreprocessedObjCXX) 1192 .Case("objc++-cpp-output", IK_PreprocessedObjCXX) 1193 .Case("c-header", IK_C) 1194 .Case("cl-header", IK_OpenCL) 1195 .Case("objective-c-header", IK_ObjC) 1196 .Case("c++-header", IK_CXX) 1197 .Case("objective-c++-header", IK_ObjCXX) 1198 .Cases("ast", "pcm", IK_AST) 1199 .Case("ir", IK_LLVM_IR) 1200 .Default(IK_None); 1201 if (DashX == IK_None) 1202 Diags.Report(diag::err_drv_invalid_value) 1203 << A->getAsString(Args) << A->getValue(); 1204 } 1205 1206 // '-' is the default input if none is given. 1207 std::vector<std::string> Inputs = Args.getAllArgValues(OPT_INPUT); 1208 Opts.Inputs.clear(); 1209 if (Inputs.empty()) 1210 Inputs.push_back("-"); 1211 for (unsigned i = 0, e = Inputs.size(); i != e; ++i) { 1212 InputKind IK = DashX; 1213 if (IK == IK_None) { 1214 IK = FrontendOptions::getInputKindForExtension( 1215 StringRef(Inputs[i]).rsplit('.').second); 1216 // FIXME: Remove this hack. 1217 if (i == 0) 1218 DashX = IK; 1219 } 1220 Opts.Inputs.emplace_back(std::move(Inputs[i]), IK); 1221 } 1222 1223 return DashX; 1224 } 1225 1226 std::string CompilerInvocation::GetResourcesPath(const char *Argv0, 1227 void *MainAddr) { 1228 std::string ClangExecutable = 1229 llvm::sys::fs::getMainExecutable(Argv0, MainAddr); 1230 StringRef Dir = llvm::sys::path::parent_path(ClangExecutable); 1231 1232 // Compute the path to the resource directory. 1233 StringRef ClangResourceDir(CLANG_RESOURCE_DIR); 1234 SmallString<128> P(Dir); 1235 if (ClangResourceDir != "") 1236 llvm::sys::path::append(P, ClangResourceDir); 1237 else 1238 llvm::sys::path::append(P, "..", Twine("lib") + CLANG_LIBDIR_SUFFIX, 1239 "clang", CLANG_VERSION_STRING); 1240 1241 return P.str(); 1242 } 1243 1244 static void ParseHeaderSearchArgs(HeaderSearchOptions &Opts, ArgList &Args) { 1245 using namespace options; 1246 Opts.Sysroot = Args.getLastArgValue(OPT_isysroot, "/"); 1247 Opts.Verbose = Args.hasArg(OPT_v); 1248 Opts.UseBuiltinIncludes = !Args.hasArg(OPT_nobuiltininc); 1249 Opts.UseStandardSystemIncludes = !Args.hasArg(OPT_nostdsysteminc); 1250 Opts.UseStandardCXXIncludes = !Args.hasArg(OPT_nostdincxx); 1251 if (const Arg *A = Args.getLastArg(OPT_stdlib_EQ)) 1252 Opts.UseLibcxx = (strcmp(A->getValue(), "libc++") == 0); 1253 Opts.ResourceDir = Args.getLastArgValue(OPT_resource_dir); 1254 Opts.ModuleCachePath = Args.getLastArgValue(OPT_fmodules_cache_path); 1255 Opts.ModuleUserBuildPath = Args.getLastArgValue(OPT_fmodules_user_build_path); 1256 Opts.DisableModuleHash = Args.hasArg(OPT_fdisable_module_hash); 1257 Opts.ImplicitModuleMaps = Args.hasArg(OPT_fimplicit_module_maps); 1258 Opts.ModuleMapFileHomeIsCwd = Args.hasArg(OPT_fmodule_map_file_home_is_cwd); 1259 Opts.ModuleCachePruneInterval = 1260 getLastArgIntValue(Args, OPT_fmodules_prune_interval, 7 * 24 * 60 * 60); 1261 Opts.ModuleCachePruneAfter = 1262 getLastArgIntValue(Args, OPT_fmodules_prune_after, 31 * 24 * 60 * 60); 1263 Opts.ModulesValidateOncePerBuildSession = 1264 Args.hasArg(OPT_fmodules_validate_once_per_build_session); 1265 Opts.BuildSessionTimestamp = 1266 getLastArgUInt64Value(Args, OPT_fbuild_session_timestamp, 0); 1267 Opts.ModulesValidateSystemHeaders = 1268 Args.hasArg(OPT_fmodules_validate_system_headers); 1269 if (const Arg *A = Args.getLastArg(OPT_fmodule_format_EQ)) 1270 Opts.ModuleFormat = A->getValue(); 1271 1272 for (const Arg *A : Args.filtered(OPT_fmodules_ignore_macro)) { 1273 StringRef MacroDef = A->getValue(); 1274 Opts.ModulesIgnoreMacros.insert(MacroDef.split('=').first); 1275 } 1276 1277 // Add -I..., -F..., and -index-header-map options in order. 1278 bool IsIndexHeaderMap = false; 1279 for (const Arg *A : Args.filtered(OPT_I, OPT_F, OPT_index_header_map)) { 1280 if (A->getOption().matches(OPT_index_header_map)) { 1281 // -index-header-map applies to the next -I or -F. 1282 IsIndexHeaderMap = true; 1283 continue; 1284 } 1285 1286 frontend::IncludeDirGroup Group = 1287 IsIndexHeaderMap ? frontend::IndexHeaderMap : frontend::Angled; 1288 1289 Opts.AddPath(A->getValue(), Group, 1290 /*IsFramework=*/A->getOption().matches(OPT_F), true); 1291 IsIndexHeaderMap = false; 1292 } 1293 1294 // Add -iprefix/-iwithprefix/-iwithprefixbefore options. 1295 StringRef Prefix = ""; // FIXME: This isn't the correct default prefix. 1296 for (const Arg *A : 1297 Args.filtered(OPT_iprefix, OPT_iwithprefix, OPT_iwithprefixbefore)) { 1298 if (A->getOption().matches(OPT_iprefix)) 1299 Prefix = A->getValue(); 1300 else if (A->getOption().matches(OPT_iwithprefix)) 1301 Opts.AddPath(Prefix.str() + A->getValue(), frontend::After, false, true); 1302 else 1303 Opts.AddPath(Prefix.str() + A->getValue(), frontend::Angled, false, true); 1304 } 1305 1306 for (const Arg *A : Args.filtered(OPT_idirafter)) 1307 Opts.AddPath(A->getValue(), frontend::After, false, true); 1308 for (const Arg *A : Args.filtered(OPT_iquote)) 1309 Opts.AddPath(A->getValue(), frontend::Quoted, false, true); 1310 for (const Arg *A : Args.filtered(OPT_isystem, OPT_iwithsysroot)) 1311 Opts.AddPath(A->getValue(), frontend::System, false, 1312 !A->getOption().matches(OPT_iwithsysroot)); 1313 for (const Arg *A : Args.filtered(OPT_iframework)) 1314 Opts.AddPath(A->getValue(), frontend::System, true, true); 1315 1316 // Add the paths for the various language specific isystem flags. 1317 for (const Arg *A : Args.filtered(OPT_c_isystem)) 1318 Opts.AddPath(A->getValue(), frontend::CSystem, false, true); 1319 for (const Arg *A : Args.filtered(OPT_cxx_isystem)) 1320 Opts.AddPath(A->getValue(), frontend::CXXSystem, false, true); 1321 for (const Arg *A : Args.filtered(OPT_objc_isystem)) 1322 Opts.AddPath(A->getValue(), frontend::ObjCSystem, false,true); 1323 for (const Arg *A : Args.filtered(OPT_objcxx_isystem)) 1324 Opts.AddPath(A->getValue(), frontend::ObjCXXSystem, false, true); 1325 1326 // Add the internal paths from a driver that detects standard include paths. 1327 for (const Arg *A : 1328 Args.filtered(OPT_internal_isystem, OPT_internal_externc_isystem)) { 1329 frontend::IncludeDirGroup Group = frontend::System; 1330 if (A->getOption().matches(OPT_internal_externc_isystem)) 1331 Group = frontend::ExternCSystem; 1332 Opts.AddPath(A->getValue(), Group, false, true); 1333 } 1334 1335 // Add the path prefixes which are implicitly treated as being system headers. 1336 for (const Arg *A : 1337 Args.filtered(OPT_system_header_prefix, OPT_no_system_header_prefix)) 1338 Opts.AddSystemHeaderPrefix( 1339 A->getValue(), A->getOption().matches(OPT_system_header_prefix)); 1340 1341 for (const Arg *A : Args.filtered(OPT_ivfsoverlay)) 1342 Opts.AddVFSOverlayFile(A->getValue()); 1343 } 1344 1345 void CompilerInvocation::setLangDefaults(LangOptions &Opts, InputKind IK, 1346 const llvm::Triple &T, 1347 LangStandard::Kind LangStd) { 1348 // Set some properties which depend solely on the input kind; it would be nice 1349 // to move these to the language standard, and have the driver resolve the 1350 // input kind + language standard. 1351 if (IK == IK_Asm) { 1352 Opts.AsmPreprocessor = 1; 1353 } else if (IK == IK_ObjC || 1354 IK == IK_ObjCXX || 1355 IK == IK_PreprocessedObjC || 1356 IK == IK_PreprocessedObjCXX) { 1357 Opts.ObjC1 = Opts.ObjC2 = 1; 1358 } 1359 1360 if (LangStd == LangStandard::lang_unspecified) { 1361 // Based on the base language, pick one. 1362 switch (IK) { 1363 case IK_None: 1364 case IK_AST: 1365 case IK_LLVM_IR: 1366 llvm_unreachable("Invalid input kind!"); 1367 case IK_OpenCL: 1368 LangStd = LangStandard::lang_opencl; 1369 break; 1370 case IK_CUDA: 1371 case IK_PreprocessedCuda: 1372 LangStd = LangStandard::lang_cuda; 1373 break; 1374 case IK_Asm: 1375 case IK_C: 1376 case IK_PreprocessedC: 1377 case IK_ObjC: 1378 case IK_PreprocessedObjC: 1379 // The PS4 uses C99 as the default C standard. 1380 if (T.isPS4()) 1381 LangStd = LangStandard::lang_gnu99; 1382 else 1383 LangStd = LangStandard::lang_gnu11; 1384 break; 1385 case IK_CXX: 1386 case IK_PreprocessedCXX: 1387 case IK_ObjCXX: 1388 case IK_PreprocessedObjCXX: 1389 LangStd = LangStandard::lang_gnucxx98; 1390 break; 1391 } 1392 } 1393 1394 const LangStandard &Std = LangStandard::getLangStandardForKind(LangStd); 1395 Opts.LineComment = Std.hasLineComments(); 1396 Opts.C99 = Std.isC99(); 1397 Opts.C11 = Std.isC11(); 1398 Opts.CPlusPlus = Std.isCPlusPlus(); 1399 Opts.CPlusPlus11 = Std.isCPlusPlus11(); 1400 Opts.CPlusPlus14 = Std.isCPlusPlus14(); 1401 Opts.CPlusPlus1z = Std.isCPlusPlus1z(); 1402 Opts.Digraphs = Std.hasDigraphs(); 1403 Opts.GNUMode = Std.isGNUMode(); 1404 Opts.GNUInline = Std.isC89(); 1405 Opts.HexFloats = Std.hasHexFloats(); 1406 Opts.ImplicitInt = Std.hasImplicitInt(); 1407 1408 // Set OpenCL Version. 1409 Opts.OpenCL = LangStd == LangStandard::lang_opencl || IK == IK_OpenCL; 1410 if (LangStd == LangStandard::lang_opencl) 1411 Opts.OpenCLVersion = 100; 1412 else if (LangStd == LangStandard::lang_opencl11) 1413 Opts.OpenCLVersion = 110; 1414 else if (LangStd == LangStandard::lang_opencl12) 1415 Opts.OpenCLVersion = 120; 1416 else if (LangStd == LangStandard::lang_opencl20) 1417 Opts.OpenCLVersion = 200; 1418 1419 // OpenCL has some additional defaults. 1420 if (Opts.OpenCL) { 1421 Opts.AltiVec = 0; 1422 Opts.ZVector = 0; 1423 Opts.CXXOperatorNames = 1; 1424 Opts.LaxVectorConversions = 0; 1425 Opts.DefaultFPContract = 1; 1426 Opts.NativeHalfType = 1; 1427 Opts.NativeHalfArgsAndReturns = 1; 1428 } 1429 1430 Opts.CUDA = IK == IK_CUDA || IK == IK_PreprocessedCuda || 1431 LangStd == LangStandard::lang_cuda; 1432 1433 // OpenCL and C++ both have bool, true, false keywords. 1434 Opts.Bool = Opts.OpenCL || Opts.CPlusPlus; 1435 1436 // OpenCL has half keyword 1437 Opts.Half = Opts.OpenCL; 1438 1439 // C++ has wchar_t keyword. 1440 Opts.WChar = Opts.CPlusPlus; 1441 1442 Opts.GNUKeywords = Opts.GNUMode; 1443 Opts.CXXOperatorNames = Opts.CPlusPlus; 1444 1445 Opts.DollarIdents = !Opts.AsmPreprocessor; 1446 } 1447 1448 /// Attempt to parse a visibility value out of the given argument. 1449 static Visibility parseVisibility(Arg *arg, ArgList &args, 1450 DiagnosticsEngine &diags) { 1451 StringRef value = arg->getValue(); 1452 if (value == "default") { 1453 return DefaultVisibility; 1454 } else if (value == "hidden" || value == "internal") { 1455 return HiddenVisibility; 1456 } else if (value == "protected") { 1457 // FIXME: diagnose if target does not support protected visibility 1458 return ProtectedVisibility; 1459 } 1460 1461 diags.Report(diag::err_drv_invalid_value) 1462 << arg->getAsString(args) << value; 1463 return DefaultVisibility; 1464 } 1465 1466 static void ParseLangArgs(LangOptions &Opts, ArgList &Args, InputKind IK, 1467 const TargetOptions &TargetOpts, 1468 DiagnosticsEngine &Diags) { 1469 // FIXME: Cleanup per-file based stuff. 1470 LangStandard::Kind LangStd = LangStandard::lang_unspecified; 1471 if (const Arg *A = Args.getLastArg(OPT_std_EQ)) { 1472 LangStd = llvm::StringSwitch<LangStandard::Kind>(A->getValue()) 1473 #define LANGSTANDARD(id, name, desc, features) \ 1474 .Case(name, LangStandard::lang_##id) 1475 #include "clang/Frontend/LangStandards.def" 1476 .Default(LangStandard::lang_unspecified); 1477 if (LangStd == LangStandard::lang_unspecified) 1478 Diags.Report(diag::err_drv_invalid_value) 1479 << A->getAsString(Args) << A->getValue(); 1480 else { 1481 // Valid standard, check to make sure language and standard are 1482 // compatible. 1483 const LangStandard &Std = LangStandard::getLangStandardForKind(LangStd); 1484 switch (IK) { 1485 case IK_C: 1486 case IK_ObjC: 1487 case IK_PreprocessedC: 1488 case IK_PreprocessedObjC: 1489 if (!(Std.isC89() || Std.isC99())) 1490 Diags.Report(diag::err_drv_argument_not_allowed_with) 1491 << A->getAsString(Args) << "C/ObjC"; 1492 break; 1493 case IK_CXX: 1494 case IK_ObjCXX: 1495 case IK_PreprocessedCXX: 1496 case IK_PreprocessedObjCXX: 1497 if (!Std.isCPlusPlus()) 1498 Diags.Report(diag::err_drv_argument_not_allowed_with) 1499 << A->getAsString(Args) << "C++/ObjC++"; 1500 break; 1501 case IK_OpenCL: 1502 Diags.Report(diag::err_drv_argument_not_allowed_with) 1503 << A->getAsString(Args) << "OpenCL"; 1504 break; 1505 case IK_CUDA: 1506 case IK_PreprocessedCuda: 1507 if (!Std.isCPlusPlus()) 1508 Diags.Report(diag::err_drv_argument_not_allowed_with) 1509 << A->getAsString(Args) << "CUDA"; 1510 break; 1511 default: 1512 break; 1513 } 1514 } 1515 } 1516 1517 // -cl-std only applies for OpenCL language standards. 1518 // Override the -std option in this case. 1519 if (const Arg *A = Args.getLastArg(OPT_cl_std_EQ)) { 1520 LangStandard::Kind OpenCLLangStd 1521 = llvm::StringSwitch<LangStandard::Kind>(A->getValue()) 1522 .Case("CL", LangStandard::lang_opencl) 1523 .Case("CL1.1", LangStandard::lang_opencl11) 1524 .Case("CL1.2", LangStandard::lang_opencl12) 1525 .Case("CL2.0", LangStandard::lang_opencl20) 1526 .Default(LangStandard::lang_unspecified); 1527 1528 if (OpenCLLangStd == LangStandard::lang_unspecified) { 1529 Diags.Report(diag::err_drv_invalid_value) 1530 << A->getAsString(Args) << A->getValue(); 1531 } 1532 else 1533 LangStd = OpenCLLangStd; 1534 } 1535 1536 llvm::Triple T(TargetOpts.Triple); 1537 CompilerInvocation::setLangDefaults(Opts, IK, T, LangStd); 1538 1539 // We abuse '-f[no-]gnu-keywords' to force overriding all GNU-extension 1540 // keywords. This behavior is provided by GCC's poorly named '-fasm' flag, 1541 // while a subset (the non-C++ GNU keywords) is provided by GCC's 1542 // '-fgnu-keywords'. Clang conflates the two for simplicity under the single 1543 // name, as it doesn't seem a useful distinction. 1544 Opts.GNUKeywords = Args.hasFlag(OPT_fgnu_keywords, OPT_fno_gnu_keywords, 1545 Opts.GNUKeywords); 1546 1547 if (Args.hasArg(OPT_fno_operator_names)) 1548 Opts.CXXOperatorNames = 0; 1549 1550 if (Args.hasArg(OPT_fcuda_is_device)) 1551 Opts.CUDAIsDevice = 1; 1552 1553 if (Args.hasArg(OPT_fcuda_allow_variadic_functions)) 1554 Opts.CUDAAllowVariadicFunctions = 1; 1555 1556 if (Args.hasArg(OPT_fno_cuda_host_device_constexpr)) 1557 Opts.CUDAHostDeviceConstexpr = 0; 1558 1559 if (Opts.CUDAIsDevice && Args.hasArg(OPT_fcuda_flush_denormals_to_zero)) 1560 Opts.CUDADeviceFlushDenormalsToZero = 1; 1561 1562 if (Opts.ObjC1) { 1563 if (Arg *arg = Args.getLastArg(OPT_fobjc_runtime_EQ)) { 1564 StringRef value = arg->getValue(); 1565 if (Opts.ObjCRuntime.tryParse(value)) 1566 Diags.Report(diag::err_drv_unknown_objc_runtime) << value; 1567 } 1568 1569 if (Args.hasArg(OPT_fobjc_gc_only)) 1570 Opts.setGC(LangOptions::GCOnly); 1571 else if (Args.hasArg(OPT_fobjc_gc)) 1572 Opts.setGC(LangOptions::HybridGC); 1573 else if (Args.hasArg(OPT_fobjc_arc)) { 1574 Opts.ObjCAutoRefCount = 1; 1575 if (!Opts.ObjCRuntime.allowsARC()) 1576 Diags.Report(diag::err_arc_unsupported_on_runtime); 1577 } 1578 1579 // ObjCWeakRuntime tracks whether the runtime supports __weak, not 1580 // whether the feature is actually enabled. This is predominantly 1581 // determined by -fobjc-runtime, but we allow it to be overridden 1582 // from the command line for testing purposes. 1583 if (Args.hasArg(OPT_fobjc_runtime_has_weak)) 1584 Opts.ObjCWeakRuntime = 1; 1585 else 1586 Opts.ObjCWeakRuntime = Opts.ObjCRuntime.allowsWeak(); 1587 1588 // ObjCWeak determines whether __weak is actually enabled. 1589 // Note that we allow -fno-objc-weak to disable this even in ARC mode. 1590 if (auto weakArg = Args.getLastArg(OPT_fobjc_weak, OPT_fno_objc_weak)) { 1591 if (!weakArg->getOption().matches(OPT_fobjc_weak)) { 1592 assert(!Opts.ObjCWeak); 1593 } else if (Opts.getGC() != LangOptions::NonGC) { 1594 Diags.Report(diag::err_objc_weak_with_gc); 1595 } else if (!Opts.ObjCWeakRuntime) { 1596 Diags.Report(diag::err_objc_weak_unsupported); 1597 } else { 1598 Opts.ObjCWeak = 1; 1599 } 1600 } else if (Opts.ObjCAutoRefCount) { 1601 Opts.ObjCWeak = Opts.ObjCWeakRuntime; 1602 } 1603 1604 if (Args.hasArg(OPT_fno_objc_infer_related_result_type)) 1605 Opts.ObjCInferRelatedResultType = 0; 1606 1607 if (Args.hasArg(OPT_fobjc_subscripting_legacy_runtime)) 1608 Opts.ObjCSubscriptingLegacyRuntime = 1609 (Opts.ObjCRuntime.getKind() == ObjCRuntime::FragileMacOSX); 1610 } 1611 1612 if (Args.hasArg(OPT_fgnu89_inline)) { 1613 if (Opts.CPlusPlus) 1614 Diags.Report(diag::err_drv_argument_not_allowed_with) << "-fgnu89-inline" 1615 << "C++/ObjC++"; 1616 else 1617 Opts.GNUInline = 1; 1618 } 1619 1620 if (Args.hasArg(OPT_fapple_kext)) { 1621 if (!Opts.CPlusPlus) 1622 Diags.Report(diag::warn_c_kext); 1623 else 1624 Opts.AppleKext = 1; 1625 } 1626 1627 if (Args.hasArg(OPT_print_ivar_layout)) 1628 Opts.ObjCGCBitmapPrint = 1; 1629 if (Args.hasArg(OPT_fno_constant_cfstrings)) 1630 Opts.NoConstantCFStrings = 1; 1631 1632 if (Args.hasArg(OPT_faltivec)) 1633 Opts.AltiVec = 1; 1634 1635 if (Args.hasArg(OPT_fzvector)) 1636 Opts.ZVector = 1; 1637 1638 if (Args.hasArg(OPT_pthread)) 1639 Opts.POSIXThreads = 1; 1640 1641 // The value-visibility mode defaults to "default". 1642 if (Arg *visOpt = Args.getLastArg(OPT_fvisibility)) { 1643 Opts.setValueVisibilityMode(parseVisibility(visOpt, Args, Diags)); 1644 } else { 1645 Opts.setValueVisibilityMode(DefaultVisibility); 1646 } 1647 1648 // The type-visibility mode defaults to the value-visibility mode. 1649 if (Arg *typeVisOpt = Args.getLastArg(OPT_ftype_visibility)) { 1650 Opts.setTypeVisibilityMode(parseVisibility(typeVisOpt, Args, Diags)); 1651 } else { 1652 Opts.setTypeVisibilityMode(Opts.getValueVisibilityMode()); 1653 } 1654 1655 if (Args.hasArg(OPT_fvisibility_inlines_hidden)) 1656 Opts.InlineVisibilityHidden = 1; 1657 1658 if (Args.hasArg(OPT_ftrapv)) { 1659 Opts.setSignedOverflowBehavior(LangOptions::SOB_Trapping); 1660 // Set the handler, if one is specified. 1661 Opts.OverflowHandler = 1662 Args.getLastArgValue(OPT_ftrapv_handler); 1663 } 1664 else if (Args.hasArg(OPT_fwrapv)) 1665 Opts.setSignedOverflowBehavior(LangOptions::SOB_Defined); 1666 1667 Opts.MSVCCompat = Args.hasArg(OPT_fms_compatibility); 1668 Opts.MicrosoftExt = Opts.MSVCCompat || Args.hasArg(OPT_fms_extensions); 1669 Opts.AsmBlocks = Args.hasArg(OPT_fasm_blocks) || Opts.MicrosoftExt; 1670 Opts.MSCompatibilityVersion = 0; 1671 if (const Arg *A = Args.getLastArg(OPT_fms_compatibility_version)) { 1672 VersionTuple VT; 1673 if (VT.tryParse(A->getValue())) 1674 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) 1675 << A->getValue(); 1676 Opts.MSCompatibilityVersion = VT.getMajor() * 10000000 + 1677 VT.getMinor().getValueOr(0) * 100000 + 1678 VT.getSubminor().getValueOr(0); 1679 } 1680 1681 // Mimicing gcc's behavior, trigraphs are only enabled if -trigraphs 1682 // is specified, or -std is set to a conforming mode. 1683 // Trigraphs are disabled by default in c++1z onwards. 1684 Opts.Trigraphs = !Opts.GNUMode && !Opts.MSVCCompat && !Opts.CPlusPlus1z; 1685 Opts.Trigraphs = 1686 Args.hasFlag(OPT_ftrigraphs, OPT_fno_trigraphs, Opts.Trigraphs); 1687 1688 Opts.DollarIdents = Args.hasFlag(OPT_fdollars_in_identifiers, 1689 OPT_fno_dollars_in_identifiers, 1690 Opts.DollarIdents); 1691 Opts.PascalStrings = Args.hasArg(OPT_fpascal_strings); 1692 Opts.VtorDispMode = getLastArgIntValue(Args, OPT_vtordisp_mode_EQ, 1, Diags); 1693 Opts.Borland = Args.hasArg(OPT_fborland_extensions); 1694 Opts.WritableStrings = Args.hasArg(OPT_fwritable_strings); 1695 Opts.ConstStrings = Args.hasFlag(OPT_fconst_strings, OPT_fno_const_strings, 1696 Opts.ConstStrings); 1697 if (Args.hasArg(OPT_fno_lax_vector_conversions)) 1698 Opts.LaxVectorConversions = 0; 1699 if (Args.hasArg(OPT_fno_threadsafe_statics)) 1700 Opts.ThreadsafeStatics = 0; 1701 Opts.Exceptions = Args.hasArg(OPT_fexceptions); 1702 Opts.ObjCExceptions = Args.hasArg(OPT_fobjc_exceptions); 1703 Opts.CXXExceptions = Args.hasArg(OPT_fcxx_exceptions); 1704 Opts.SjLjExceptions = Args.hasArg(OPT_fsjlj_exceptions); 1705 Opts.ExternCNoUnwind = Args.hasArg(OPT_fexternc_nounwind); 1706 Opts.TraditionalCPP = Args.hasArg(OPT_traditional_cpp); 1707 1708 Opts.RTTI = Opts.CPlusPlus && !Args.hasArg(OPT_fno_rtti); 1709 Opts.RTTIData = Opts.RTTI && !Args.hasArg(OPT_fno_rtti_data); 1710 Opts.Blocks = Args.hasArg(OPT_fblocks); 1711 Opts.BlocksRuntimeOptional = Args.hasArg(OPT_fblocks_runtime_optional); 1712 Opts.Coroutines = Args.hasArg(OPT_fcoroutines); 1713 Opts.Modules = Args.hasArg(OPT_fmodules); 1714 Opts.ModulesStrictDeclUse = Args.hasArg(OPT_fmodules_strict_decluse); 1715 Opts.ModulesDeclUse = 1716 Args.hasArg(OPT_fmodules_decluse) || Opts.ModulesStrictDeclUse; 1717 Opts.ModulesLocalVisibility = 1718 Args.hasArg(OPT_fmodules_local_submodule_visibility); 1719 Opts.ModulesSearchAll = Opts.Modules && 1720 !Args.hasArg(OPT_fno_modules_search_all) && 1721 Args.hasArg(OPT_fmodules_search_all); 1722 Opts.ModulesErrorRecovery = !Args.hasArg(OPT_fno_modules_error_recovery); 1723 Opts.ImplicitModules = !Args.hasArg(OPT_fno_implicit_modules); 1724 Opts.CharIsSigned = Opts.OpenCL || !Args.hasArg(OPT_fno_signed_char); 1725 Opts.WChar = Opts.CPlusPlus && !Args.hasArg(OPT_fno_wchar); 1726 Opts.ShortWChar = Args.hasFlag(OPT_fshort_wchar, OPT_fno_short_wchar, false); 1727 Opts.ShortEnums = Args.hasArg(OPT_fshort_enums); 1728 Opts.Freestanding = Args.hasArg(OPT_ffreestanding); 1729 Opts.NoBuiltin = Args.hasArg(OPT_fno_builtin) || Opts.Freestanding; 1730 if (!Opts.NoBuiltin) 1731 getAllNoBuiltinFuncValues(Args, Opts.NoBuiltinFuncs); 1732 Opts.NoMathBuiltin = Args.hasArg(OPT_fno_math_builtin); 1733 Opts.SizedDeallocation = Args.hasArg(OPT_fsized_deallocation); 1734 Opts.ConceptsTS = Args.hasArg(OPT_fconcepts_ts); 1735 Opts.HeinousExtensions = Args.hasArg(OPT_fheinous_gnu_extensions); 1736 Opts.AccessControl = !Args.hasArg(OPT_fno_access_control); 1737 Opts.ElideConstructors = !Args.hasArg(OPT_fno_elide_constructors); 1738 Opts.MathErrno = !Opts.OpenCL && Args.hasArg(OPT_fmath_errno); 1739 Opts.InstantiationDepth = 1740 getLastArgIntValue(Args, OPT_ftemplate_depth, 256, Diags); 1741 Opts.ArrowDepth = 1742 getLastArgIntValue(Args, OPT_foperator_arrow_depth, 256, Diags); 1743 Opts.ConstexprCallDepth = 1744 getLastArgIntValue(Args, OPT_fconstexpr_depth, 512, Diags); 1745 Opts.ConstexprStepLimit = 1746 getLastArgIntValue(Args, OPT_fconstexpr_steps, 1048576, Diags); 1747 Opts.BracketDepth = getLastArgIntValue(Args, OPT_fbracket_depth, 256, Diags); 1748 Opts.DelayedTemplateParsing = Args.hasArg(OPT_fdelayed_template_parsing); 1749 Opts.NumLargeByValueCopy = 1750 getLastArgIntValue(Args, OPT_Wlarge_by_value_copy_EQ, 0, Diags); 1751 Opts.MSBitfields = Args.hasArg(OPT_mms_bitfields); 1752 Opts.ObjCConstantStringClass = 1753 Args.getLastArgValue(OPT_fconstant_string_class); 1754 Opts.ObjCDefaultSynthProperties = 1755 !Args.hasArg(OPT_disable_objc_default_synthesize_properties); 1756 Opts.EncodeExtendedBlockSig = 1757 Args.hasArg(OPT_fencode_extended_block_signature); 1758 Opts.EmitAllDecls = Args.hasArg(OPT_femit_all_decls); 1759 Opts.PackStruct = getLastArgIntValue(Args, OPT_fpack_struct_EQ, 0, Diags); 1760 Opts.MaxTypeAlign = getLastArgIntValue(Args, OPT_fmax_type_align_EQ, 0, Diags); 1761 Opts.PICLevel = getLastArgIntValue(Args, OPT_pic_level, 0, Diags); 1762 Opts.PIELevel = getLastArgIntValue(Args, OPT_pie_level, 0, Diags); 1763 Opts.Static = Args.hasArg(OPT_static_define); 1764 Opts.DumpRecordLayoutsSimple = Args.hasArg(OPT_fdump_record_layouts_simple); 1765 Opts.DumpRecordLayouts = Opts.DumpRecordLayoutsSimple 1766 || Args.hasArg(OPT_fdump_record_layouts); 1767 Opts.DumpVTableLayouts = Args.hasArg(OPT_fdump_vtable_layouts); 1768 Opts.SpellChecking = !Args.hasArg(OPT_fno_spell_checking); 1769 Opts.NoBitFieldTypeAlign = Args.hasArg(OPT_fno_bitfield_type_align); 1770 Opts.SinglePrecisionConstants = Args.hasArg(OPT_cl_single_precision_constant); 1771 Opts.FastRelaxedMath = Args.hasArg(OPT_cl_fast_relaxed_math); 1772 Opts.MRTD = Args.hasArg(OPT_mrtd); 1773 Opts.HexagonQdsp6Compat = Args.hasArg(OPT_mqdsp6_compat); 1774 Opts.FakeAddressSpaceMap = Args.hasArg(OPT_ffake_address_space_map); 1775 Opts.ParseUnknownAnytype = Args.hasArg(OPT_funknown_anytype); 1776 Opts.DebuggerSupport = Args.hasArg(OPT_fdebugger_support); 1777 Opts.DebuggerCastResultToId = Args.hasArg(OPT_fdebugger_cast_result_to_id); 1778 Opts.DebuggerObjCLiteral = Args.hasArg(OPT_fdebugger_objc_literal); 1779 Opts.ApplePragmaPack = Args.hasArg(OPT_fapple_pragma_pack); 1780 Opts.CurrentModule = Args.getLastArgValue(OPT_fmodule_name_EQ); 1781 Opts.AppExt = Args.hasArg(OPT_fapplication_extension); 1782 Opts.ModuleFeatures = Args.getAllArgValues(OPT_fmodule_feature); 1783 std::sort(Opts.ModuleFeatures.begin(), Opts.ModuleFeatures.end()); 1784 Opts.NativeHalfType |= Args.hasArg(OPT_fnative_half_type); 1785 Opts.NativeHalfArgsAndReturns |= Args.hasArg(OPT_fnative_half_arguments_and_returns); 1786 // Enable HalfArgsAndReturns if present in Args or if NativeHalfArgsAndReturns 1787 // is enabled. 1788 Opts.HalfArgsAndReturns = Args.hasArg(OPT_fallow_half_arguments_and_returns) 1789 | Opts.NativeHalfArgsAndReturns; 1790 Opts.GNUAsm = !Args.hasArg(OPT_fno_gnu_inline_asm); 1791 1792 // __declspec is enabled by default for the PS4 by the driver, and also 1793 // enabled for Microsoft Extensions or Borland Extensions, here. 1794 // 1795 // FIXME: __declspec is also currently enabled for CUDA, but isn't really a 1796 // CUDA extension, however it is required for supporting cuda_builtin_vars.h, 1797 // which uses __declspec(property). Once that has been rewritten in terms of 1798 // something more generic, remove the Opts.CUDA term here. 1799 Opts.DeclSpecKeyword = 1800 Args.hasFlag(OPT_fdeclspec, OPT_fno_declspec, 1801 (Opts.MicrosoftExt || Opts.Borland || Opts.CUDA)); 1802 1803 // For now, we only support local submodule visibility in C++ (because we 1804 // heavily depend on the ODR for merging redefinitions). 1805 if (Opts.ModulesLocalVisibility && !Opts.CPlusPlus) 1806 Diags.Report(diag::err_drv_argument_not_allowed_with) 1807 << "-fmodules-local-submodule-visibility" << "C"; 1808 1809 if (Arg *A = Args.getLastArg(OPT_faddress_space_map_mangling_EQ)) { 1810 switch (llvm::StringSwitch<unsigned>(A->getValue()) 1811 .Case("target", LangOptions::ASMM_Target) 1812 .Case("no", LangOptions::ASMM_Off) 1813 .Case("yes", LangOptions::ASMM_On) 1814 .Default(255)) { 1815 default: 1816 Diags.Report(diag::err_drv_invalid_value) 1817 << "-faddress-space-map-mangling=" << A->getValue(); 1818 break; 1819 case LangOptions::ASMM_Target: 1820 Opts.setAddressSpaceMapMangling(LangOptions::ASMM_Target); 1821 break; 1822 case LangOptions::ASMM_On: 1823 Opts.setAddressSpaceMapMangling(LangOptions::ASMM_On); 1824 break; 1825 case LangOptions::ASMM_Off: 1826 Opts.setAddressSpaceMapMangling(LangOptions::ASMM_Off); 1827 break; 1828 } 1829 } 1830 1831 if (Arg *A = Args.getLastArg(OPT_fms_memptr_rep_EQ)) { 1832 LangOptions::PragmaMSPointersToMembersKind InheritanceModel = 1833 llvm::StringSwitch<LangOptions::PragmaMSPointersToMembersKind>( 1834 A->getValue()) 1835 .Case("single", 1836 LangOptions::PPTMK_FullGeneralitySingleInheritance) 1837 .Case("multiple", 1838 LangOptions::PPTMK_FullGeneralityMultipleInheritance) 1839 .Case("virtual", 1840 LangOptions::PPTMK_FullGeneralityVirtualInheritance) 1841 .Default(LangOptions::PPTMK_BestCase); 1842 if (InheritanceModel == LangOptions::PPTMK_BestCase) 1843 Diags.Report(diag::err_drv_invalid_value) 1844 << "-fms-memptr-rep=" << A->getValue(); 1845 1846 Opts.setMSPointerToMemberRepresentationMethod(InheritanceModel); 1847 } 1848 1849 // Check if -fopenmp is specified. 1850 Opts.OpenMP = Args.hasArg(options::OPT_fopenmp); 1851 Opts.OpenMPUseTLS = 1852 Opts.OpenMP && !Args.hasArg(options::OPT_fnoopenmp_use_tls); 1853 Opts.OpenMPIsDevice = 1854 Opts.OpenMP && Args.hasArg(options::OPT_fopenmp_is_device); 1855 1856 // Provide diagnostic when a given target is not expected to be an OpenMP 1857 // device or host. 1858 if (Opts.OpenMP && !Opts.OpenMPIsDevice) { 1859 switch (T.getArch()) { 1860 default: 1861 break; 1862 // Add unsupported host targets here: 1863 case llvm::Triple::nvptx: 1864 case llvm::Triple::nvptx64: 1865 Diags.Report(clang::diag::err_drv_omp_host_target_not_supported) 1866 << TargetOpts.Triple; 1867 break; 1868 } 1869 } 1870 1871 // Get the OpenMP target triples if any. 1872 if (Arg *A = Args.getLastArg(options::OPT_fomptargets_EQ)) { 1873 1874 for (unsigned i = 0; i < A->getNumValues(); ++i) { 1875 llvm::Triple TT(A->getValue(i)); 1876 1877 if (TT.getArch() == llvm::Triple::UnknownArch) 1878 Diags.Report(clang::diag::err_drv_invalid_omp_target) << A->getValue(i); 1879 else 1880 Opts.OMPTargetTriples.push_back(TT); 1881 } 1882 } 1883 1884 // Get OpenMP host file path if any and report if a non existent file is 1885 // found 1886 if (Arg *A = Args.getLastArg(options::OPT_fomp_host_ir_file_path)) { 1887 Opts.OMPHostIRFile = A->getValue(); 1888 if (!llvm::sys::fs::exists(Opts.OMPHostIRFile)) 1889 Diags.Report(clang::diag::err_drv_omp_host_ir_file_not_found) 1890 << Opts.OMPHostIRFile; 1891 } 1892 1893 // Record whether the __DEPRECATED define was requested. 1894 Opts.Deprecated = Args.hasFlag(OPT_fdeprecated_macro, 1895 OPT_fno_deprecated_macro, 1896 Opts.Deprecated); 1897 1898 // FIXME: Eliminate this dependency. 1899 unsigned Opt = getOptimizationLevel(Args, IK, Diags), 1900 OptSize = getOptimizationLevelSize(Args); 1901 Opts.Optimize = Opt != 0; 1902 Opts.OptimizeSize = OptSize != 0; 1903 1904 // This is the __NO_INLINE__ define, which just depends on things like the 1905 // optimization level and -fno-inline, not actually whether the backend has 1906 // inlining enabled. 1907 Opts.NoInlineDefine = !Opt || Args.hasArg(OPT_fno_inline); 1908 1909 Opts.FastMath = Args.hasArg(OPT_ffast_math) || 1910 Args.hasArg(OPT_cl_fast_relaxed_math); 1911 Opts.FiniteMathOnly = Args.hasArg(OPT_ffinite_math_only) || 1912 Args.hasArg(OPT_cl_finite_math_only) || 1913 Args.hasArg(OPT_cl_fast_relaxed_math); 1914 Opts.UnsafeFPMath = Args.hasArg(OPT_menable_unsafe_fp_math) || 1915 Args.hasArg(OPT_cl_unsafe_math_optimizations) || 1916 Args.hasArg(OPT_cl_fast_relaxed_math); 1917 1918 Opts.RetainCommentsFromSystemHeaders = 1919 Args.hasArg(OPT_fretain_comments_from_system_headers); 1920 1921 unsigned SSP = getLastArgIntValue(Args, OPT_stack_protector, 0, Diags); 1922 switch (SSP) { 1923 default: 1924 Diags.Report(diag::err_drv_invalid_value) 1925 << Args.getLastArg(OPT_stack_protector)->getAsString(Args) << SSP; 1926 break; 1927 case 0: Opts.setStackProtector(LangOptions::SSPOff); break; 1928 case 1: Opts.setStackProtector(LangOptions::SSPOn); break; 1929 case 2: Opts.setStackProtector(LangOptions::SSPStrong); break; 1930 case 3: Opts.setStackProtector(LangOptions::SSPReq); break; 1931 } 1932 1933 // Parse -fsanitize= arguments. 1934 parseSanitizerKinds("-fsanitize=", Args.getAllArgValues(OPT_fsanitize_EQ), 1935 Diags, Opts.Sanitize); 1936 // -fsanitize-address-field-padding=N has to be a LangOpt, parse it here. 1937 Opts.SanitizeAddressFieldPadding = 1938 getLastArgIntValue(Args, OPT_fsanitize_address_field_padding, 0, Diags); 1939 Opts.SanitizerBlacklistFiles = Args.getAllArgValues(OPT_fsanitize_blacklist); 1940 } 1941 1942 static void ParsePreprocessorArgs(PreprocessorOptions &Opts, ArgList &Args, 1943 FileManager &FileMgr, 1944 DiagnosticsEngine &Diags) { 1945 using namespace options; 1946 Opts.ImplicitPCHInclude = Args.getLastArgValue(OPT_include_pch); 1947 Opts.ImplicitPTHInclude = Args.getLastArgValue(OPT_include_pth); 1948 if (const Arg *A = Args.getLastArg(OPT_token_cache)) 1949 Opts.TokenCache = A->getValue(); 1950 else 1951 Opts.TokenCache = Opts.ImplicitPTHInclude; 1952 Opts.UsePredefines = !Args.hasArg(OPT_undef); 1953 Opts.DetailedRecord = Args.hasArg(OPT_detailed_preprocessing_record); 1954 Opts.DisablePCHValidation = Args.hasArg(OPT_fno_validate_pch); 1955 1956 Opts.DumpDeserializedPCHDecls = Args.hasArg(OPT_dump_deserialized_pch_decls); 1957 for (const Arg *A : Args.filtered(OPT_error_on_deserialized_pch_decl)) 1958 Opts.DeserializedPCHDeclsToErrorOn.insert(A->getValue()); 1959 1960 if (const Arg *A = Args.getLastArg(OPT_preamble_bytes_EQ)) { 1961 StringRef Value(A->getValue()); 1962 size_t Comma = Value.find(','); 1963 unsigned Bytes = 0; 1964 unsigned EndOfLine = 0; 1965 1966 if (Comma == StringRef::npos || 1967 Value.substr(0, Comma).getAsInteger(10, Bytes) || 1968 Value.substr(Comma + 1).getAsInteger(10, EndOfLine)) 1969 Diags.Report(diag::err_drv_preamble_format); 1970 else { 1971 Opts.PrecompiledPreambleBytes.first = Bytes; 1972 Opts.PrecompiledPreambleBytes.second = (EndOfLine != 0); 1973 } 1974 } 1975 1976 // Add macros from the command line. 1977 for (const Arg *A : Args.filtered(OPT_D, OPT_U)) { 1978 if (A->getOption().matches(OPT_D)) 1979 Opts.addMacroDef(A->getValue()); 1980 else 1981 Opts.addMacroUndef(A->getValue()); 1982 } 1983 1984 Opts.MacroIncludes = Args.getAllArgValues(OPT_imacros); 1985 1986 // Add the ordered list of -includes. 1987 for (const Arg *A : Args.filtered(OPT_include)) 1988 Opts.Includes.emplace_back(A->getValue()); 1989 1990 for (const Arg *A : Args.filtered(OPT_chain_include)) 1991 Opts.ChainedIncludes.emplace_back(A->getValue()); 1992 1993 for (const Arg *A : Args.filtered(OPT_remap_file)) { 1994 std::pair<StringRef, StringRef> Split = StringRef(A->getValue()).split(';'); 1995 1996 if (Split.second.empty()) { 1997 Diags.Report(diag::err_drv_invalid_remap_file) << A->getAsString(Args); 1998 continue; 1999 } 2000 2001 Opts.addRemappedFile(Split.first, Split.second); 2002 } 2003 2004 if (Arg *A = Args.getLastArg(OPT_fobjc_arc_cxxlib_EQ)) { 2005 StringRef Name = A->getValue(); 2006 unsigned Library = llvm::StringSwitch<unsigned>(Name) 2007 .Case("libc++", ARCXX_libcxx) 2008 .Case("libstdc++", ARCXX_libstdcxx) 2009 .Case("none", ARCXX_nolib) 2010 .Default(~0U); 2011 if (Library == ~0U) 2012 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Name; 2013 else 2014 Opts.ObjCXXARCStandardLibrary = (ObjCXXARCStandardLibraryKind)Library; 2015 } 2016 } 2017 2018 static void ParsePreprocessorOutputArgs(PreprocessorOutputOptions &Opts, 2019 ArgList &Args, 2020 frontend::ActionKind Action) { 2021 using namespace options; 2022 2023 switch (Action) { 2024 case frontend::ASTDeclList: 2025 case frontend::ASTDump: 2026 case frontend::ASTPrint: 2027 case frontend::ASTView: 2028 case frontend::EmitAssembly: 2029 case frontend::EmitBC: 2030 case frontend::EmitHTML: 2031 case frontend::EmitLLVM: 2032 case frontend::EmitLLVMOnly: 2033 case frontend::EmitCodeGenOnly: 2034 case frontend::EmitObj: 2035 case frontend::FixIt: 2036 case frontend::GenerateModule: 2037 case frontend::GeneratePCH: 2038 case frontend::GeneratePTH: 2039 case frontend::ParseSyntaxOnly: 2040 case frontend::ModuleFileInfo: 2041 case frontend::VerifyPCH: 2042 case frontend::PluginAction: 2043 case frontend::PrintDeclContext: 2044 case frontend::RewriteObjC: 2045 case frontend::RewriteTest: 2046 case frontend::RunAnalysis: 2047 case frontend::MigrateSource: 2048 Opts.ShowCPP = 0; 2049 break; 2050 2051 case frontend::DumpRawTokens: 2052 case frontend::DumpTokens: 2053 case frontend::InitOnly: 2054 case frontend::PrintPreamble: 2055 case frontend::PrintPreprocessedInput: 2056 case frontend::RewriteMacros: 2057 case frontend::RunPreprocessorOnly: 2058 Opts.ShowCPP = !Args.hasArg(OPT_dM); 2059 break; 2060 } 2061 2062 Opts.ShowComments = Args.hasArg(OPT_C); 2063 Opts.ShowLineMarkers = !Args.hasArg(OPT_P); 2064 Opts.ShowMacroComments = Args.hasArg(OPT_CC); 2065 Opts.ShowMacros = Args.hasArg(OPT_dM) || Args.hasArg(OPT_dD); 2066 Opts.RewriteIncludes = Args.hasArg(OPT_frewrite_includes); 2067 Opts.UseLineDirectives = Args.hasArg(OPT_fuse_line_directives); 2068 } 2069 2070 static void ParseTargetArgs(TargetOptions &Opts, ArgList &Args, 2071 DiagnosticsEngine &Diags) { 2072 using namespace options; 2073 Opts.ABI = Args.getLastArgValue(OPT_target_abi); 2074 if (Arg *A = Args.getLastArg(OPT_meabi)) { 2075 StringRef Value = A->getValue(); 2076 llvm::EABI EABIVersion = llvm::StringSwitch<llvm::EABI>(Value) 2077 .Case("default", llvm::EABI::Default) 2078 .Case("4", llvm::EABI::EABI4) 2079 .Case("5", llvm::EABI::EABI5) 2080 .Case("gnu", llvm::EABI::GNU) 2081 .Default(llvm::EABI::Unknown); 2082 if (EABIVersion == llvm::EABI::Unknown) 2083 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) 2084 << Value; 2085 else 2086 Opts.EABIVersion = Value; 2087 } 2088 Opts.CPU = Args.getLastArgValue(OPT_target_cpu); 2089 Opts.FPMath = Args.getLastArgValue(OPT_mfpmath); 2090 Opts.FeaturesAsWritten = Args.getAllArgValues(OPT_target_feature); 2091 Opts.LinkerVersion = Args.getLastArgValue(OPT_target_linker_version); 2092 Opts.Triple = llvm::Triple::normalize(Args.getLastArgValue(OPT_triple)); 2093 Opts.Reciprocals = Args.getAllArgValues(OPT_mrecip_EQ); 2094 // Use the default target triple if unspecified. 2095 if (Opts.Triple.empty()) 2096 Opts.Triple = llvm::sys::getDefaultTargetTriple(); 2097 } 2098 2099 bool CompilerInvocation::CreateFromArgs(CompilerInvocation &Res, 2100 const char *const *ArgBegin, 2101 const char *const *ArgEnd, 2102 DiagnosticsEngine &Diags) { 2103 bool Success = true; 2104 2105 // Parse the arguments. 2106 std::unique_ptr<OptTable> Opts(createDriverOptTable()); 2107 const unsigned IncludedFlagsBitmask = options::CC1Option; 2108 unsigned MissingArgIndex, MissingArgCount; 2109 InputArgList Args = 2110 Opts->ParseArgs(llvm::makeArrayRef(ArgBegin, ArgEnd), MissingArgIndex, 2111 MissingArgCount, IncludedFlagsBitmask); 2112 LangOptions &LangOpts = *Res.getLangOpts(); 2113 2114 // Check for missing argument error. 2115 if (MissingArgCount) { 2116 Diags.Report(diag::err_drv_missing_argument) 2117 << Args.getArgString(MissingArgIndex) << MissingArgCount; 2118 Success = false; 2119 } 2120 2121 // Issue errors on unknown arguments. 2122 for (const Arg *A : Args.filtered(OPT_UNKNOWN)) { 2123 Diags.Report(diag::err_drv_unknown_argument) << A->getAsString(Args); 2124 Success = false; 2125 } 2126 2127 Success &= ParseAnalyzerArgs(*Res.getAnalyzerOpts(), Args, Diags); 2128 Success &= ParseMigratorArgs(Res.getMigratorOpts(), Args); 2129 ParseDependencyOutputArgs(Res.getDependencyOutputOpts(), Args); 2130 Success &= ParseDiagnosticArgs(Res.getDiagnosticOpts(), Args, &Diags); 2131 ParseCommentArgs(LangOpts.CommentOpts, Args); 2132 ParseFileSystemArgs(Res.getFileSystemOpts(), Args); 2133 // FIXME: We shouldn't have to pass the DashX option around here 2134 InputKind DashX = ParseFrontendArgs(Res.getFrontendOpts(), Args, Diags); 2135 ParseTargetArgs(Res.getTargetOpts(), Args, Diags); 2136 Success &= ParseCodeGenArgs(Res.getCodeGenOpts(), Args, DashX, Diags, 2137 Res.getTargetOpts()); 2138 ParseHeaderSearchArgs(Res.getHeaderSearchOpts(), Args); 2139 if (DashX == IK_AST || DashX == IK_LLVM_IR) { 2140 // ObjCAAutoRefCount and Sanitize LangOpts are used to setup the 2141 // PassManager in BackendUtil.cpp. They need to be initializd no matter 2142 // what the input type is. 2143 if (Args.hasArg(OPT_fobjc_arc)) 2144 LangOpts.ObjCAutoRefCount = 1; 2145 // PIClevel and PIELevel are needed during code generation and this should be 2146 // set regardless of the input type. 2147 LangOpts.PICLevel = getLastArgIntValue(Args, OPT_pic_level, 0, Diags); 2148 LangOpts.PIELevel = getLastArgIntValue(Args, OPT_pie_level, 0, Diags); 2149 parseSanitizerKinds("-fsanitize=", Args.getAllArgValues(OPT_fsanitize_EQ), 2150 Diags, LangOpts.Sanitize); 2151 } else { 2152 // Other LangOpts are only initialzed when the input is not AST or LLVM IR. 2153 ParseLangArgs(LangOpts, Args, DashX, Res.getTargetOpts(), Diags); 2154 if (Res.getFrontendOpts().ProgramAction == frontend::RewriteObjC) 2155 LangOpts.ObjCExceptions = 1; 2156 } 2157 2158 // FIXME: Override value name discarding when asan or msan is used because the 2159 // backend passes depend on the name of the alloca in order to print out 2160 // names. 2161 Res.getCodeGenOpts().DiscardValueNames &= 2162 !LangOpts.Sanitize.has(SanitizerKind::Address) && 2163 !LangOpts.Sanitize.has(SanitizerKind::Memory); 2164 2165 // FIXME: ParsePreprocessorArgs uses the FileManager to read the contents of 2166 // PCH file and find the original header name. Remove the need to do that in 2167 // ParsePreprocessorArgs and remove the FileManager 2168 // parameters from the function and the "FileManager.h" #include. 2169 FileManager FileMgr(Res.getFileSystemOpts()); 2170 ParsePreprocessorArgs(Res.getPreprocessorOpts(), Args, FileMgr, Diags); 2171 ParsePreprocessorOutputArgs(Res.getPreprocessorOutputOpts(), Args, 2172 Res.getFrontendOpts().ProgramAction); 2173 return Success; 2174 } 2175 2176 namespace { 2177 2178 class ModuleSignature { 2179 SmallVector<uint64_t, 16> Data; 2180 unsigned CurBit; 2181 uint64_t CurValue; 2182 2183 public: 2184 ModuleSignature() : CurBit(0), CurValue(0) { } 2185 2186 void add(uint64_t Value, unsigned Bits); 2187 void add(StringRef Value); 2188 void flush(); 2189 2190 llvm::APInt getAsInteger() const; 2191 }; 2192 } 2193 2194 void ModuleSignature::add(uint64_t Value, unsigned int NumBits) { 2195 CurValue |= Value << CurBit; 2196 if (CurBit + NumBits < 64) { 2197 CurBit += NumBits; 2198 return; 2199 } 2200 2201 // Add the current word. 2202 Data.push_back(CurValue); 2203 2204 if (CurBit) 2205 CurValue = Value >> (64-CurBit); 2206 else 2207 CurValue = 0; 2208 CurBit = (CurBit+NumBits) & 63; 2209 } 2210 2211 void ModuleSignature::flush() { 2212 if (CurBit == 0) 2213 return; 2214 2215 Data.push_back(CurValue); 2216 CurBit = 0; 2217 CurValue = 0; 2218 } 2219 2220 void ModuleSignature::add(StringRef Value) { 2221 for (auto &c : Value) 2222 add(c, 8); 2223 } 2224 2225 llvm::APInt ModuleSignature::getAsInteger() const { 2226 return llvm::APInt(Data.size() * 64, Data); 2227 } 2228 2229 std::string CompilerInvocation::getModuleHash() const { 2230 // Note: For QoI reasons, the things we use as a hash here should all be 2231 // dumped via the -module-info flag. 2232 using llvm::hash_code; 2233 using llvm::hash_value; 2234 using llvm::hash_combine; 2235 2236 // Start the signature with the compiler version. 2237 // FIXME: We'd rather use something more cryptographically sound than 2238 // CityHash, but this will do for now. 2239 hash_code code = hash_value(getClangFullRepositoryVersion()); 2240 2241 // Extend the signature with the language options 2242 #define LANGOPT(Name, Bits, Default, Description) \ 2243 code = hash_combine(code, LangOpts->Name); 2244 #define ENUM_LANGOPT(Name, Type, Bits, Default, Description) \ 2245 code = hash_combine(code, static_cast<unsigned>(LangOpts->get##Name())); 2246 #define BENIGN_LANGOPT(Name, Bits, Default, Description) 2247 #define BENIGN_ENUM_LANGOPT(Name, Type, Bits, Default, Description) 2248 #include "clang/Basic/LangOptions.def" 2249 2250 for (StringRef Feature : LangOpts->ModuleFeatures) 2251 code = hash_combine(code, Feature); 2252 2253 // Extend the signature with the target options. 2254 code = hash_combine(code, TargetOpts->Triple, TargetOpts->CPU, 2255 TargetOpts->ABI); 2256 for (unsigned i = 0, n = TargetOpts->FeaturesAsWritten.size(); i != n; ++i) 2257 code = hash_combine(code, TargetOpts->FeaturesAsWritten[i]); 2258 2259 // Extend the signature with preprocessor options. 2260 const PreprocessorOptions &ppOpts = getPreprocessorOpts(); 2261 const HeaderSearchOptions &hsOpts = getHeaderSearchOpts(); 2262 code = hash_combine(code, ppOpts.UsePredefines, ppOpts.DetailedRecord); 2263 2264 for (std::vector<std::pair<std::string, bool/*isUndef*/>>::const_iterator 2265 I = getPreprocessorOpts().Macros.begin(), 2266 IEnd = getPreprocessorOpts().Macros.end(); 2267 I != IEnd; ++I) { 2268 // If we're supposed to ignore this macro for the purposes of modules, 2269 // don't put it into the hash. 2270 if (!hsOpts.ModulesIgnoreMacros.empty()) { 2271 // Check whether we're ignoring this macro. 2272 StringRef MacroDef = I->first; 2273 if (hsOpts.ModulesIgnoreMacros.count(MacroDef.split('=').first)) 2274 continue; 2275 } 2276 2277 code = hash_combine(code, I->first, I->second); 2278 } 2279 2280 // Extend the signature with the sysroot and other header search options. 2281 code = hash_combine(code, hsOpts.Sysroot, 2282 hsOpts.ModuleFormat, 2283 hsOpts.UseDebugInfo, 2284 hsOpts.UseBuiltinIncludes, 2285 hsOpts.UseStandardSystemIncludes, 2286 hsOpts.UseStandardCXXIncludes, 2287 hsOpts.UseLibcxx); 2288 code = hash_combine(code, hsOpts.ResourceDir); 2289 2290 // Extend the signature with the user build path. 2291 code = hash_combine(code, hsOpts.ModuleUserBuildPath); 2292 2293 // Extend the signature with the module file extensions. 2294 const FrontendOptions &frontendOpts = getFrontendOpts(); 2295 for (auto ext : frontendOpts.ModuleFileExtensions) { 2296 code = ext->hashExtension(code); 2297 } 2298 2299 // Darwin-specific hack: if we have a sysroot, use the contents and 2300 // modification time of 2301 // $sysroot/System/Library/CoreServices/SystemVersion.plist 2302 // as part of the module hash. 2303 if (!hsOpts.Sysroot.empty()) { 2304 SmallString<128> systemVersionFile; 2305 systemVersionFile += hsOpts.Sysroot; 2306 llvm::sys::path::append(systemVersionFile, "System"); 2307 llvm::sys::path::append(systemVersionFile, "Library"); 2308 llvm::sys::path::append(systemVersionFile, "CoreServices"); 2309 llvm::sys::path::append(systemVersionFile, "SystemVersion.plist"); 2310 2311 llvm::ErrorOr<std::unique_ptr<llvm::MemoryBuffer>> buffer = 2312 llvm::MemoryBuffer::getFile(systemVersionFile); 2313 if (buffer) { 2314 code = hash_combine(code, buffer.get()->getBuffer()); 2315 2316 struct stat statBuf; 2317 if (stat(systemVersionFile.c_str(), &statBuf) == 0) 2318 code = hash_combine(code, statBuf.st_mtime); 2319 } 2320 } 2321 2322 return llvm::APInt(64, code).toString(36, /*Signed=*/false); 2323 } 2324 2325 namespace clang { 2326 2327 template<typename IntTy> 2328 static IntTy getLastArgIntValueImpl(const ArgList &Args, OptSpecifier Id, 2329 IntTy Default, 2330 DiagnosticsEngine *Diags) { 2331 IntTy Res = Default; 2332 if (Arg *A = Args.getLastArg(Id)) { 2333 if (StringRef(A->getValue()).getAsInteger(10, Res)) { 2334 if (Diags) 2335 Diags->Report(diag::err_drv_invalid_int_value) << A->getAsString(Args) 2336 << A->getValue(); 2337 } 2338 } 2339 return Res; 2340 } 2341 2342 2343 // Declared in clang/Frontend/Utils.h. 2344 int getLastArgIntValue(const ArgList &Args, OptSpecifier Id, int Default, 2345 DiagnosticsEngine *Diags) { 2346 return getLastArgIntValueImpl<int>(Args, Id, Default, Diags); 2347 } 2348 2349 uint64_t getLastArgUInt64Value(const ArgList &Args, OptSpecifier Id, 2350 uint64_t Default, 2351 DiagnosticsEngine *Diags) { 2352 return getLastArgIntValueImpl<uint64_t>(Args, Id, Default, Diags); 2353 } 2354 2355 void BuryPointer(const void *Ptr) { 2356 // This function may be called only a small fixed amount of times per each 2357 // invocation, otherwise we do actually have a leak which we want to report. 2358 // If this function is called more than kGraveYardMaxSize times, the pointers 2359 // will not be properly buried and a leak detector will report a leak, which 2360 // is what we want in such case. 2361 static const size_t kGraveYardMaxSize = 16; 2362 LLVM_ATTRIBUTE_UNUSED static const void *GraveYard[kGraveYardMaxSize]; 2363 static std::atomic<unsigned> GraveYardSize; 2364 unsigned Idx = GraveYardSize++; 2365 if (Idx >= kGraveYardMaxSize) 2366 return; 2367 GraveYard[Idx] = Ptr; 2368 } 2369 2370 IntrusiveRefCntPtr<vfs::FileSystem> 2371 createVFSFromCompilerInvocation(const CompilerInvocation &CI, 2372 DiagnosticsEngine &Diags) { 2373 if (CI.getHeaderSearchOpts().VFSOverlayFiles.empty()) 2374 return vfs::getRealFileSystem(); 2375 2376 IntrusiveRefCntPtr<vfs::OverlayFileSystem> 2377 Overlay(new vfs::OverlayFileSystem(vfs::getRealFileSystem())); 2378 // earlier vfs files are on the bottom 2379 for (const std::string &File : CI.getHeaderSearchOpts().VFSOverlayFiles) { 2380 llvm::ErrorOr<std::unique_ptr<llvm::MemoryBuffer>> Buffer = 2381 llvm::MemoryBuffer::getFile(File); 2382 if (!Buffer) { 2383 Diags.Report(diag::err_missing_vfs_overlay_file) << File; 2384 return IntrusiveRefCntPtr<vfs::FileSystem>(); 2385 } 2386 2387 IntrusiveRefCntPtr<vfs::FileSystem> FS = vfs::getVFSFromYAML( 2388 std::move(Buffer.get()), /*DiagHandler*/ nullptr, File); 2389 if (!FS.get()) { 2390 Diags.Report(diag::err_invalid_vfs_overlay) << File; 2391 return IntrusiveRefCntPtr<vfs::FileSystem>(); 2392 } 2393 Overlay->pushOverlay(FS); 2394 } 2395 return Overlay; 2396 } 2397 } // end namespace clang 2398