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