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 "clang/Frontend/CompilerInvocation.h" 11 #include "TestModuleFileExtension.h" 12 #include "clang/Basic/Builtins.h" 13 #include "clang/Basic/FileManager.h" 14 #include "clang/Basic/Version.h" 15 #include "clang/Config/config.h" 16 #include "clang/Driver/DriverDiagnostic.h" 17 #include "clang/Driver/Options.h" 18 #include "clang/Driver/Util.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/Lex/PreprocessorOptions.h" 24 #include "clang/Serialization/ASTReader.h" 25 #include "clang/Serialization/ModuleFileExtension.h" 26 #include "llvm/ADT/Hashing.h" 27 #include "llvm/ADT/STLExtras.h" 28 #include "llvm/ADT/SmallVector.h" 29 #include "llvm/ADT/StringExtras.h" 30 #include "llvm/ADT/StringSwitch.h" 31 #include "llvm/ADT/Triple.h" 32 #include "llvm/Linker/Linker.h" 33 #include "llvm/Option/Arg.h" 34 #include "llvm/Option/ArgList.h" 35 #include "llvm/Option/OptTable.h" 36 #include "llvm/Option/Option.h" 37 #include "llvm/ProfileData/InstrProfReader.h" 38 #include "llvm/Support/CodeGen.h" 39 #include "llvm/Support/ErrorHandling.h" 40 #include "llvm/Support/FileSystem.h" 41 #include "llvm/Support/Host.h" 42 #include "llvm/Support/Path.h" 43 #include "llvm/Support/Process.h" 44 #include "llvm/Target/TargetOptions.h" 45 #include "llvm/Support/ScopedPrinter.h" 46 #include <atomic> 47 #include <memory> 48 #include <sys/stat.h> 49 #include <system_error> 50 using namespace clang; 51 52 //===----------------------------------------------------------------------===// 53 // Initialization. 54 //===----------------------------------------------------------------------===// 55 56 CompilerInvocationBase::CompilerInvocationBase() 57 : LangOpts(new LangOptions()), TargetOpts(new TargetOptions()), 58 DiagnosticOpts(new DiagnosticOptions()), 59 HeaderSearchOpts(new HeaderSearchOptions()), 60 PreprocessorOpts(new PreprocessorOptions()) {} 61 62 CompilerInvocationBase::CompilerInvocationBase(const CompilerInvocationBase &X) 63 : RefCountedBase<CompilerInvocation>(), 64 LangOpts(new LangOptions(*X.getLangOpts())), 65 TargetOpts(new TargetOptions(X.getTargetOpts())), 66 DiagnosticOpts(new DiagnosticOptions(X.getDiagnosticOpts())), 67 HeaderSearchOpts(new HeaderSearchOptions(X.getHeaderSearchOpts())), 68 PreprocessorOpts(new PreprocessorOptions(X.getPreprocessorOpts())) {} 69 70 CompilerInvocationBase::~CompilerInvocationBase() {} 71 72 //===----------------------------------------------------------------------===// 73 // Deserialization (from args) 74 //===----------------------------------------------------------------------===// 75 76 using namespace clang::driver; 77 using namespace clang::driver::options; 78 using namespace llvm::opt; 79 80 // 81 82 static unsigned getOptimizationLevel(ArgList &Args, InputKind IK, 83 DiagnosticsEngine &Diags) { 84 unsigned DefaultOpt = 0; 85 if (IK == IK_OpenCL && !Args.hasArg(OPT_cl_opt_disable)) 86 DefaultOpt = 2; 87 88 if (Arg *A = Args.getLastArg(options::OPT_O_Group)) { 89 if (A->getOption().matches(options::OPT_O0)) 90 return 0; 91 92 if (A->getOption().matches(options::OPT_Ofast)) 93 return 3; 94 95 assert (A->getOption().matches(options::OPT_O)); 96 97 StringRef S(A->getValue()); 98 if (S == "s" || S == "z" || S.empty()) 99 return 2; 100 101 return getLastArgIntValue(Args, OPT_O, DefaultOpt, Diags); 102 } 103 104 return DefaultOpt; 105 } 106 107 static unsigned getOptimizationLevelSize(ArgList &Args) { 108 if (Arg *A = Args.getLastArg(options::OPT_O_Group)) { 109 if (A->getOption().matches(options::OPT_O)) { 110 switch (A->getValue()[0]) { 111 default: 112 return 0; 113 case 's': 114 return 1; 115 case 'z': 116 return 2; 117 } 118 } 119 } 120 return 0; 121 } 122 123 static void addDiagnosticArgs(ArgList &Args, OptSpecifier Group, 124 OptSpecifier GroupWithValue, 125 std::vector<std::string> &Diagnostics) { 126 for (Arg *A : Args.filtered(Group)) { 127 if (A->getOption().getKind() == Option::FlagClass) { 128 // The argument is a pure flag (such as OPT_Wall or OPT_Wdeprecated). Add 129 // its name (minus the "W" or "R" at the beginning) to the warning list. 130 Diagnostics.push_back(A->getOption().getName().drop_front(1)); 131 } else if (A->getOption().matches(GroupWithValue)) { 132 // This is -Wfoo= or -Rfoo=, where foo is the name of the diagnostic group. 133 Diagnostics.push_back(A->getOption().getName().drop_front(1).rtrim("=-")); 134 } else { 135 // Otherwise, add its value (for OPT_W_Joined and similar). 136 for (const char *Arg : A->getValues()) 137 Diagnostics.emplace_back(Arg); 138 } 139 } 140 } 141 142 static void getAllNoBuiltinFuncValues(ArgList &Args, 143 std::vector<std::string> &Funcs) { 144 SmallVector<const char *, 8> Values; 145 for (const auto &Arg : Args) { 146 const Option &O = Arg->getOption(); 147 if (O.matches(options::OPT_fno_builtin_)) { 148 const char *FuncName = Arg->getValue(); 149 if (Builtin::Context::isBuiltinFunc(FuncName)) 150 Values.push_back(FuncName); 151 } 152 } 153 Funcs.insert(Funcs.end(), Values.begin(), Values.end()); 154 } 155 156 static bool ParseAnalyzerArgs(AnalyzerOptions &Opts, ArgList &Args, 157 DiagnosticsEngine &Diags) { 158 using namespace options; 159 bool Success = true; 160 if (Arg *A = Args.getLastArg(OPT_analyzer_store)) { 161 StringRef Name = A->getValue(); 162 AnalysisStores Value = llvm::StringSwitch<AnalysisStores>(Name) 163 #define ANALYSIS_STORE(NAME, CMDFLAG, DESC, CREATFN) \ 164 .Case(CMDFLAG, NAME##Model) 165 #include "clang/StaticAnalyzer/Core/Analyses.def" 166 .Default(NumStores); 167 if (Value == NumStores) { 168 Diags.Report(diag::err_drv_invalid_value) 169 << A->getAsString(Args) << Name; 170 Success = false; 171 } else { 172 Opts.AnalysisStoreOpt = Value; 173 } 174 } 175 176 if (Arg *A = Args.getLastArg(OPT_analyzer_constraints)) { 177 StringRef Name = A->getValue(); 178 AnalysisConstraints Value = llvm::StringSwitch<AnalysisConstraints>(Name) 179 #define ANALYSIS_CONSTRAINTS(NAME, CMDFLAG, DESC, CREATFN) \ 180 .Case(CMDFLAG, NAME##Model) 181 #include "clang/StaticAnalyzer/Core/Analyses.def" 182 .Default(NumConstraints); 183 if (Value == NumConstraints) { 184 Diags.Report(diag::err_drv_invalid_value) 185 << A->getAsString(Args) << Name; 186 Success = false; 187 } else { 188 Opts.AnalysisConstraintsOpt = Value; 189 } 190 } 191 192 if (Arg *A = Args.getLastArg(OPT_analyzer_output)) { 193 StringRef Name = A->getValue(); 194 AnalysisDiagClients Value = llvm::StringSwitch<AnalysisDiagClients>(Name) 195 #define ANALYSIS_DIAGNOSTICS(NAME, CMDFLAG, DESC, CREATFN) \ 196 .Case(CMDFLAG, PD_##NAME) 197 #include "clang/StaticAnalyzer/Core/Analyses.def" 198 .Default(NUM_ANALYSIS_DIAG_CLIENTS); 199 if (Value == NUM_ANALYSIS_DIAG_CLIENTS) { 200 Diags.Report(diag::err_drv_invalid_value) 201 << A->getAsString(Args) << Name; 202 Success = false; 203 } else { 204 Opts.AnalysisDiagOpt = Value; 205 } 206 } 207 208 if (Arg *A = Args.getLastArg(OPT_analyzer_purge)) { 209 StringRef Name = A->getValue(); 210 AnalysisPurgeMode Value = llvm::StringSwitch<AnalysisPurgeMode>(Name) 211 #define ANALYSIS_PURGE(NAME, CMDFLAG, DESC) \ 212 .Case(CMDFLAG, NAME) 213 #include "clang/StaticAnalyzer/Core/Analyses.def" 214 .Default(NumPurgeModes); 215 if (Value == NumPurgeModes) { 216 Diags.Report(diag::err_drv_invalid_value) 217 << A->getAsString(Args) << Name; 218 Success = false; 219 } else { 220 Opts.AnalysisPurgeOpt = Value; 221 } 222 } 223 224 if (Arg *A = Args.getLastArg(OPT_analyzer_inlining_mode)) { 225 StringRef Name = A->getValue(); 226 AnalysisInliningMode Value = llvm::StringSwitch<AnalysisInliningMode>(Name) 227 #define ANALYSIS_INLINING_MODE(NAME, CMDFLAG, DESC) \ 228 .Case(CMDFLAG, NAME) 229 #include "clang/StaticAnalyzer/Core/Analyses.def" 230 .Default(NumInliningModes); 231 if (Value == NumInliningModes) { 232 Diags.Report(diag::err_drv_invalid_value) 233 << A->getAsString(Args) << Name; 234 Success = false; 235 } else { 236 Opts.InliningMode = Value; 237 } 238 } 239 240 Opts.ShowCheckerHelp = Args.hasArg(OPT_analyzer_checker_help); 241 Opts.ShowEnabledCheckerList = Args.hasArg(OPT_analyzer_list_enabled_checkers); 242 Opts.DisableAllChecks = Args.hasArg(OPT_analyzer_disable_all_checks); 243 244 Opts.visualizeExplodedGraphWithGraphViz = 245 Args.hasArg(OPT_analyzer_viz_egraph_graphviz); 246 Opts.visualizeExplodedGraphWithUbiGraph = 247 Args.hasArg(OPT_analyzer_viz_egraph_ubigraph); 248 Opts.NoRetryExhausted = Args.hasArg(OPT_analyzer_disable_retry_exhausted); 249 Opts.AnalyzeAll = Args.hasArg(OPT_analyzer_opt_analyze_headers); 250 Opts.AnalyzerDisplayProgress = Args.hasArg(OPT_analyzer_display_progress); 251 Opts.AnalyzeNestedBlocks = 252 Args.hasArg(OPT_analyzer_opt_analyze_nested_blocks); 253 Opts.eagerlyAssumeBinOpBifurcation = Args.hasArg(OPT_analyzer_eagerly_assume); 254 Opts.AnalyzeSpecificFunction = Args.getLastArgValue(OPT_analyze_function); 255 Opts.UnoptimizedCFG = Args.hasArg(OPT_analysis_UnoptimizedCFG); 256 Opts.TrimGraph = Args.hasArg(OPT_trim_egraph); 257 Opts.maxBlockVisitOnPath = 258 getLastArgIntValue(Args, OPT_analyzer_max_loop, 4, Diags); 259 Opts.PrintStats = Args.hasArg(OPT_analyzer_stats); 260 Opts.InlineMaxStackDepth = 261 getLastArgIntValue(Args, OPT_analyzer_inline_max_stack_depth, 262 Opts.InlineMaxStackDepth, Diags); 263 264 Opts.CheckersControlList.clear(); 265 for (const Arg *A : 266 Args.filtered(OPT_analyzer_checker, OPT_analyzer_disable_checker)) { 267 A->claim(); 268 bool enable = (A->getOption().getID() == OPT_analyzer_checker); 269 // We can have a list of comma separated checker names, e.g: 270 // '-analyzer-checker=cocoa,unix' 271 StringRef checkerList = A->getValue(); 272 SmallVector<StringRef, 4> checkers; 273 checkerList.split(checkers, ","); 274 for (StringRef checker : checkers) 275 Opts.CheckersControlList.emplace_back(checker, enable); 276 } 277 278 // Go through the analyzer configuration options. 279 for (const Arg *A : Args.filtered(OPT_analyzer_config)) { 280 A->claim(); 281 // We can have a list of comma separated config names, e.g: 282 // '-analyzer-config key1=val1,key2=val2' 283 StringRef configList = A->getValue(); 284 SmallVector<StringRef, 4> configVals; 285 configList.split(configVals, ","); 286 for (unsigned i = 0, e = configVals.size(); i != e; ++i) { 287 StringRef key, val; 288 std::tie(key, val) = configVals[i].split("="); 289 if (val.empty()) { 290 Diags.Report(SourceLocation(), 291 diag::err_analyzer_config_no_value) << configVals[i]; 292 Success = false; 293 break; 294 } 295 if (val.find('=') != StringRef::npos) { 296 Diags.Report(SourceLocation(), 297 diag::err_analyzer_config_multiple_values) 298 << configVals[i]; 299 Success = false; 300 break; 301 } 302 Opts.Config[key] = val; 303 } 304 } 305 306 return Success; 307 } 308 309 static bool ParseMigratorArgs(MigratorOptions &Opts, ArgList &Args) { 310 Opts.NoNSAllocReallocError = Args.hasArg(OPT_migrator_no_nsalloc_error); 311 Opts.NoFinalizeRemoval = Args.hasArg(OPT_migrator_no_finalize_removal); 312 return true; 313 } 314 315 static void ParseCommentArgs(CommentOptions &Opts, ArgList &Args) { 316 Opts.BlockCommandNames = Args.getAllArgValues(OPT_fcomment_block_commands); 317 Opts.ParseAllComments = Args.hasArg(OPT_fparse_all_comments); 318 } 319 320 static StringRef getCodeModel(ArgList &Args, DiagnosticsEngine &Diags) { 321 if (Arg *A = Args.getLastArg(OPT_mcode_model)) { 322 StringRef Value = A->getValue(); 323 if (Value == "small" || Value == "kernel" || Value == "medium" || 324 Value == "large") 325 return Value; 326 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Value; 327 } 328 return "default"; 329 } 330 331 /// \brief Create a new Regex instance out of the string value in \p RpassArg. 332 /// It returns a pointer to the newly generated Regex instance. 333 static std::shared_ptr<llvm::Regex> 334 GenerateOptimizationRemarkRegex(DiagnosticsEngine &Diags, ArgList &Args, 335 Arg *RpassArg) { 336 StringRef Val = RpassArg->getValue(); 337 std::string RegexError; 338 std::shared_ptr<llvm::Regex> Pattern = std::make_shared<llvm::Regex>(Val); 339 if (!Pattern->isValid(RegexError)) { 340 Diags.Report(diag::err_drv_optimization_remark_pattern) 341 << RegexError << RpassArg->getAsString(Args); 342 Pattern.reset(); 343 } 344 return Pattern; 345 } 346 347 static bool parseDiagnosticLevelMask(StringRef FlagName, 348 const std::vector<std::string> &Levels, 349 DiagnosticsEngine *Diags, 350 DiagnosticLevelMask &M) { 351 bool Success = true; 352 for (const auto &Level : Levels) { 353 DiagnosticLevelMask const PM = 354 llvm::StringSwitch<DiagnosticLevelMask>(Level) 355 .Case("note", DiagnosticLevelMask::Note) 356 .Case("remark", DiagnosticLevelMask::Remark) 357 .Case("warning", DiagnosticLevelMask::Warning) 358 .Case("error", DiagnosticLevelMask::Error) 359 .Default(DiagnosticLevelMask::None); 360 if (PM == DiagnosticLevelMask::None) { 361 Success = false; 362 if (Diags) 363 Diags->Report(diag::err_drv_invalid_value) << FlagName << Level; 364 } 365 M = M | PM; 366 } 367 return Success; 368 } 369 370 static void parseSanitizerKinds(StringRef FlagName, 371 const std::vector<std::string> &Sanitizers, 372 DiagnosticsEngine &Diags, SanitizerSet &S) { 373 for (const auto &Sanitizer : Sanitizers) { 374 SanitizerMask K = parseSanitizerValue(Sanitizer, /*AllowGroups=*/false); 375 if (K == 0) 376 Diags.Report(diag::err_drv_invalid_value) << FlagName << Sanitizer; 377 else 378 S.set(K, true); 379 } 380 } 381 382 // Set the profile kind for fprofile-instrument. 383 static void setPGOInstrumentor(CodeGenOptions &Opts, ArgList &Args, 384 DiagnosticsEngine &Diags) { 385 Arg *A = Args.getLastArg(OPT_fprofile_instrument_EQ); 386 if (A == nullptr) 387 return; 388 StringRef S = A->getValue(); 389 unsigned I = llvm::StringSwitch<unsigned>(S) 390 .Case("none", CodeGenOptions::ProfileNone) 391 .Case("clang", CodeGenOptions::ProfileClangInstr) 392 .Case("llvm", CodeGenOptions::ProfileIRInstr) 393 .Default(~0U); 394 if (I == ~0U) { 395 Diags.Report(diag::err_drv_invalid_pgo_instrumentor) << A->getAsString(Args) 396 << S; 397 return; 398 } 399 CodeGenOptions::ProfileInstrKind Instrumentor = 400 static_cast<CodeGenOptions::ProfileInstrKind>(I); 401 Opts.setProfileInstr(Instrumentor); 402 } 403 404 // Set the profile kind using fprofile-instrument-use-path. 405 static void setPGOUseInstrumentor(CodeGenOptions &Opts, 406 const Twine &ProfileName) { 407 auto ReaderOrErr = llvm::IndexedInstrProfReader::create(ProfileName); 408 // In error, return silently and let Clang PGOUse report the error message. 409 if (auto E = ReaderOrErr.takeError()) { 410 llvm::consumeError(std::move(E)); 411 Opts.setProfileUse(CodeGenOptions::ProfileClangInstr); 412 return; 413 } 414 std::unique_ptr<llvm::IndexedInstrProfReader> PGOReader = 415 std::move(ReaderOrErr.get()); 416 if (PGOReader->isIRLevelProfile()) 417 Opts.setProfileUse(CodeGenOptions::ProfileIRInstr); 418 else 419 Opts.setProfileUse(CodeGenOptions::ProfileClangInstr); 420 } 421 422 static bool ParseCodeGenArgs(CodeGenOptions &Opts, ArgList &Args, InputKind IK, 423 DiagnosticsEngine &Diags, 424 const TargetOptions &TargetOpts) { 425 using namespace options; 426 bool Success = true; 427 llvm::Triple Triple = llvm::Triple(TargetOpts.Triple); 428 429 unsigned OptimizationLevel = getOptimizationLevel(Args, IK, Diags); 430 // TODO: This could be done in Driver 431 unsigned MaxOptLevel = 3; 432 if (OptimizationLevel > MaxOptLevel) { 433 // If the optimization level is not supported, fall back on the default 434 // optimization 435 Diags.Report(diag::warn_drv_optimization_value) 436 << Args.getLastArg(OPT_O)->getAsString(Args) << "-O" << MaxOptLevel; 437 OptimizationLevel = MaxOptLevel; 438 } 439 Opts.OptimizationLevel = OptimizationLevel; 440 441 // We must always run at least the always inlining pass. 442 Opts.setInlining( 443 (Opts.OptimizationLevel > 1) ? CodeGenOptions::NormalInlining 444 : CodeGenOptions::OnlyAlwaysInlining); 445 // -fno-inline-functions overrides OptimizationLevel > 1. 446 Opts.NoInline = Args.hasArg(OPT_fno_inline); 447 if (Arg* InlineArg = Args.getLastArg(options::OPT_finline_functions, 448 options::OPT_finline_hint_functions, 449 options::OPT_fno_inline_functions)) { 450 const Option& InlineOpt = InlineArg->getOption(); 451 if (InlineOpt.matches(options::OPT_finline_functions)) 452 Opts.setInlining(CodeGenOptions::NormalInlining); 453 else if (InlineOpt.matches(options::OPT_finline_hint_functions)) 454 Opts.setInlining(CodeGenOptions::OnlyHintInlining); 455 else 456 Opts.setInlining(CodeGenOptions::OnlyAlwaysInlining); 457 } 458 459 if (Arg *A = Args.getLastArg(OPT_fveclib)) { 460 StringRef Name = A->getValue(); 461 if (Name == "Accelerate") 462 Opts.setVecLib(CodeGenOptions::Accelerate); 463 else if (Name == "SVML") 464 Opts.setVecLib(CodeGenOptions::SVML); 465 else if (Name == "none") 466 Opts.setVecLib(CodeGenOptions::NoLibrary); 467 else 468 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Name; 469 } 470 471 if (Arg *A = Args.getLastArg(OPT_debug_info_kind_EQ)) { 472 unsigned Val = 473 llvm::StringSwitch<unsigned>(A->getValue()) 474 .Case("line-tables-only", codegenoptions::DebugLineTablesOnly) 475 .Case("limited", codegenoptions::LimitedDebugInfo) 476 .Case("standalone", codegenoptions::FullDebugInfo) 477 .Default(~0U); 478 if (Val == ~0U) 479 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) 480 << A->getValue(); 481 else 482 Opts.setDebugInfo(static_cast<codegenoptions::DebugInfoKind>(Val)); 483 } 484 if (Arg *A = Args.getLastArg(OPT_debugger_tuning_EQ)) { 485 unsigned Val = llvm::StringSwitch<unsigned>(A->getValue()) 486 .Case("gdb", unsigned(llvm::DebuggerKind::GDB)) 487 .Case("lldb", unsigned(llvm::DebuggerKind::LLDB)) 488 .Case("sce", unsigned(llvm::DebuggerKind::SCE)) 489 .Default(~0U); 490 if (Val == ~0U) 491 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) 492 << A->getValue(); 493 else 494 Opts.setDebuggerTuning(static_cast<llvm::DebuggerKind>(Val)); 495 } 496 Opts.DwarfVersion = getLastArgIntValue(Args, OPT_dwarf_version_EQ, 0, Diags); 497 Opts.DebugColumnInfo = Args.hasArg(OPT_dwarf_column_info); 498 Opts.EmitCodeView = Args.hasArg(OPT_gcodeview); 499 Opts.WholeProgramVTables = Args.hasArg(OPT_fwhole_program_vtables); 500 Opts.LTOVisibilityPublicStd = Args.hasArg(OPT_flto_visibility_public_std); 501 Opts.SplitDwarfFile = Args.getLastArgValue(OPT_split_dwarf_file); 502 Opts.SplitDwarfInlining = !Args.hasArg(OPT_fno_split_dwarf_inlining); 503 Opts.DebugTypeExtRefs = Args.hasArg(OPT_dwarf_ext_refs); 504 Opts.DebugExplicitImport = Triple.isPS4CPU(); 505 506 for (const auto &Arg : Args.getAllArgValues(OPT_fdebug_prefix_map_EQ)) 507 Opts.DebugPrefixMap.insert(StringRef(Arg).split('=')); 508 509 if (const Arg *A = 510 Args.getLastArg(OPT_emit_llvm_uselists, OPT_no_emit_llvm_uselists)) 511 Opts.EmitLLVMUseLists = A->getOption().getID() == OPT_emit_llvm_uselists; 512 513 Opts.DisableLLVMOpts = Args.hasArg(OPT_disable_llvm_optzns); 514 Opts.DisableLLVMPasses = Args.hasArg(OPT_disable_llvm_passes); 515 Opts.DisableRedZone = Args.hasArg(OPT_disable_red_zone); 516 Opts.ForbidGuardVariables = Args.hasArg(OPT_fforbid_guard_variables); 517 Opts.UseRegisterSizedBitfieldAccess = Args.hasArg( 518 OPT_fuse_register_sized_bitfield_access); 519 Opts.RelaxedAliasing = Args.hasArg(OPT_relaxed_aliasing); 520 Opts.StructPathTBAA = !Args.hasArg(OPT_no_struct_path_tbaa); 521 Opts.DwarfDebugFlags = Args.getLastArgValue(OPT_dwarf_debug_flags); 522 Opts.MergeAllConstants = !Args.hasArg(OPT_fno_merge_all_constants); 523 Opts.NoCommon = Args.hasArg(OPT_fno_common); 524 Opts.NoImplicitFloat = Args.hasArg(OPT_no_implicit_float); 525 Opts.OptimizeSize = getOptimizationLevelSize(Args); 526 Opts.SimplifyLibCalls = !(Args.hasArg(OPT_fno_builtin) || 527 Args.hasArg(OPT_ffreestanding)); 528 if (Opts.SimplifyLibCalls) 529 getAllNoBuiltinFuncValues(Args, Opts.NoBuiltinFuncs); 530 Opts.UnrollLoops = 531 Args.hasFlag(OPT_funroll_loops, OPT_fno_unroll_loops, 532 (Opts.OptimizationLevel > 1)); 533 Opts.RerollLoops = Args.hasArg(OPT_freroll_loops); 534 535 Opts.DisableIntegratedAS = Args.hasArg(OPT_fno_integrated_as); 536 Opts.Autolink = !Args.hasArg(OPT_fno_autolink); 537 Opts.SampleProfileFile = Args.getLastArgValue(OPT_fprofile_sample_use_EQ); 538 539 setPGOInstrumentor(Opts, Args, Diags); 540 Opts.InstrProfileOutput = 541 Args.getLastArgValue(OPT_fprofile_instrument_path_EQ); 542 Opts.ProfileInstrumentUsePath = 543 Args.getLastArgValue(OPT_fprofile_instrument_use_path_EQ); 544 if (!Opts.ProfileInstrumentUsePath.empty()) 545 setPGOUseInstrumentor(Opts, Opts.ProfileInstrumentUsePath); 546 547 Opts.CoverageMapping = 548 Args.hasFlag(OPT_fcoverage_mapping, OPT_fno_coverage_mapping, false); 549 Opts.DumpCoverageMapping = Args.hasArg(OPT_dump_coverage_mapping); 550 Opts.AsmVerbose = Args.hasArg(OPT_masm_verbose); 551 Opts.PreserveAsmComments = !Args.hasArg(OPT_fno_preserve_as_comments); 552 Opts.AssumeSaneOperatorNew = !Args.hasArg(OPT_fno_assume_sane_operator_new); 553 Opts.ObjCAutoRefCountExceptions = Args.hasArg(OPT_fobjc_arc_exceptions); 554 Opts.CXAAtExit = !Args.hasArg(OPT_fno_use_cxa_atexit); 555 Opts.CXXCtorDtorAliases = Args.hasArg(OPT_mconstructor_aliases); 556 Opts.CodeModel = getCodeModel(Args, Diags); 557 Opts.DebugPass = Args.getLastArgValue(OPT_mdebug_pass); 558 Opts.DisableFPElim = 559 (Args.hasArg(OPT_mdisable_fp_elim) || Args.hasArg(OPT_pg)); 560 Opts.DisableFree = Args.hasArg(OPT_disable_free); 561 Opts.DiscardValueNames = Args.hasArg(OPT_discard_value_names); 562 Opts.DisableTailCalls = Args.hasArg(OPT_mdisable_tail_calls); 563 Opts.FloatABI = Args.getLastArgValue(OPT_mfloat_abi); 564 Opts.LessPreciseFPMAD = Args.hasArg(OPT_cl_mad_enable); 565 Opts.LimitFloatPrecision = Args.getLastArgValue(OPT_mlimit_float_precision); 566 Opts.NoInfsFPMath = (Args.hasArg(OPT_menable_no_infinities) || 567 Args.hasArg(OPT_cl_finite_math_only) || 568 Args.hasArg(OPT_cl_fast_relaxed_math)); 569 Opts.NoNaNsFPMath = (Args.hasArg(OPT_menable_no_nans) || 570 Args.hasArg(OPT_cl_unsafe_math_optimizations) || 571 Args.hasArg(OPT_cl_finite_math_only) || 572 Args.hasArg(OPT_cl_fast_relaxed_math)); 573 Opts.NoSignedZeros = (Args.hasArg(OPT_fno_signed_zeros) || 574 Args.hasArg(OPT_cl_no_signed_zeros)); 575 Opts.FlushDenorm = Args.hasArg(OPT_cl_denorms_are_zero); 576 Opts.CorrectlyRoundedDivSqrt = 577 Args.hasArg(OPT_cl_fp32_correctly_rounded_divide_sqrt); 578 Opts.ReciprocalMath = Args.hasArg(OPT_freciprocal_math); 579 Opts.NoTrappingMath = Args.hasArg(OPT_fno_trapping_math); 580 Opts.NoZeroInitializedInBSS = Args.hasArg(OPT_mno_zero_initialized_in_bss); 581 Opts.BackendOptions = Args.getAllArgValues(OPT_backend_option); 582 Opts.NumRegisterParameters = getLastArgIntValue(Args, OPT_mregparm, 0, Diags); 583 Opts.NoExecStack = Args.hasArg(OPT_mno_exec_stack); 584 Opts.FatalWarnings = Args.hasArg(OPT_massembler_fatal_warnings); 585 Opts.EnableSegmentedStacks = Args.hasArg(OPT_split_stacks); 586 Opts.RelaxAll = Args.hasArg(OPT_mrelax_all); 587 Opts.IncrementalLinkerCompatible = 588 Args.hasArg(OPT_mincremental_linker_compatible); 589 Opts.OmitLeafFramePointer = Args.hasArg(OPT_momit_leaf_frame_pointer); 590 Opts.SaveTempLabels = Args.hasArg(OPT_msave_temp_labels); 591 Opts.NoDwarfDirectoryAsm = Args.hasArg(OPT_fno_dwarf_directory_asm); 592 Opts.SoftFloat = Args.hasArg(OPT_msoft_float); 593 Opts.StrictEnums = Args.hasArg(OPT_fstrict_enums); 594 Opts.StrictVTablePointers = Args.hasArg(OPT_fstrict_vtable_pointers); 595 Opts.UnsafeFPMath = Args.hasArg(OPT_menable_unsafe_fp_math) || 596 Args.hasArg(OPT_cl_unsafe_math_optimizations) || 597 Args.hasArg(OPT_cl_fast_relaxed_math); 598 Opts.UnwindTables = Args.hasArg(OPT_munwind_tables); 599 Opts.RelocationModel = Args.getLastArgValue(OPT_mrelocation_model, "pic"); 600 Opts.ThreadModel = Args.getLastArgValue(OPT_mthread_model, "posix"); 601 if (Opts.ThreadModel != "posix" && Opts.ThreadModel != "single") 602 Diags.Report(diag::err_drv_invalid_value) 603 << Args.getLastArg(OPT_mthread_model)->getAsString(Args) 604 << Opts.ThreadModel; 605 Opts.TrapFuncName = Args.getLastArgValue(OPT_ftrap_function_EQ); 606 Opts.UseInitArray = Args.hasArg(OPT_fuse_init_array); 607 608 Opts.FunctionSections = Args.hasFlag(OPT_ffunction_sections, 609 OPT_fno_function_sections, false); 610 Opts.DataSections = Args.hasFlag(OPT_fdata_sections, 611 OPT_fno_data_sections, false); 612 Opts.UniqueSectionNames = Args.hasFlag(OPT_funique_section_names, 613 OPT_fno_unique_section_names, true); 614 615 Opts.MergeFunctions = Args.hasArg(OPT_fmerge_functions); 616 617 Opts.NoUseJumpTables = Args.hasArg(OPT_fno_jump_tables); 618 619 Opts.PrepareForLTO = Args.hasArg(OPT_flto, OPT_flto_EQ); 620 const Arg *A = Args.getLastArg(OPT_flto, OPT_flto_EQ); 621 Opts.EmitSummaryIndex = A && A->containsValue("thin"); 622 if (Arg *A = Args.getLastArg(OPT_fthinlto_index_EQ)) { 623 if (IK != IK_LLVM_IR) 624 Diags.Report(diag::err_drv_argument_only_allowed_with) 625 << A->getAsString(Args) << "-x ir"; 626 Opts.ThinLTOIndexFile = Args.getLastArgValue(OPT_fthinlto_index_EQ); 627 } 628 629 Opts.MSVolatile = Args.hasArg(OPT_fms_volatile); 630 631 Opts.VectorizeBB = Args.hasArg(OPT_vectorize_slp_aggressive); 632 Opts.VectorizeLoop = Args.hasArg(OPT_vectorize_loops); 633 Opts.VectorizeSLP = Args.hasArg(OPT_vectorize_slp); 634 635 Opts.MainFileName = Args.getLastArgValue(OPT_main_file_name); 636 Opts.VerifyModule = !Args.hasArg(OPT_disable_llvm_verifier); 637 638 Opts.DisableGCov = Args.hasArg(OPT_test_coverage); 639 Opts.EmitGcovArcs = Args.hasArg(OPT_femit_coverage_data); 640 Opts.EmitGcovNotes = Args.hasArg(OPT_femit_coverage_notes); 641 if (Opts.EmitGcovArcs || Opts.EmitGcovNotes) { 642 Opts.CoverageDataFile = Args.getLastArgValue(OPT_coverage_data_file); 643 Opts.CoverageNotesFile = Args.getLastArgValue(OPT_coverage_notes_file); 644 Opts.CoverageExtraChecksum = Args.hasArg(OPT_coverage_cfg_checksum); 645 Opts.CoverageNoFunctionNamesInData = 646 Args.hasArg(OPT_coverage_no_function_names_in_data); 647 Opts.CoverageExitBlockBeforeBody = 648 Args.hasArg(OPT_coverage_exit_block_before_body); 649 if (Args.hasArg(OPT_coverage_version_EQ)) { 650 StringRef CoverageVersion = Args.getLastArgValue(OPT_coverage_version_EQ); 651 if (CoverageVersion.size() != 4) { 652 Diags.Report(diag::err_drv_invalid_value) 653 << Args.getLastArg(OPT_coverage_version_EQ)->getAsString(Args) 654 << CoverageVersion; 655 } else { 656 memcpy(Opts.CoverageVersion, CoverageVersion.data(), 4); 657 } 658 } 659 } 660 // Handle -fembed-bitcode option. 661 if (Arg *A = Args.getLastArg(OPT_fembed_bitcode_EQ)) { 662 StringRef Name = A->getValue(); 663 unsigned Model = llvm::StringSwitch<unsigned>(Name) 664 .Case("off", CodeGenOptions::Embed_Off) 665 .Case("all", CodeGenOptions::Embed_All) 666 .Case("bitcode", CodeGenOptions::Embed_Bitcode) 667 .Case("marker", CodeGenOptions::Embed_Marker) 668 .Default(~0U); 669 if (Model == ~0U) { 670 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Name; 671 Success = false; 672 } else 673 Opts.setEmbedBitcode( 674 static_cast<CodeGenOptions::EmbedBitcodeKind>(Model)); 675 } 676 // FIXME: For backend options that are not yet recorded as function 677 // attributes in the IR, keep track of them so we can embed them in a 678 // separate data section and use them when building the bitcode. 679 if (Opts.getEmbedBitcode() == CodeGenOptions::Embed_All) { 680 for (const auto &A : Args) { 681 // Do not encode output and input. 682 if (A->getOption().getID() == options::OPT_o || 683 A->getOption().getID() == options::OPT_INPUT || 684 A->getOption().getID() == options::OPT_x || 685 A->getOption().getID() == options::OPT_fembed_bitcode || 686 (A->getOption().getGroup().isValid() && 687 A->getOption().getGroup().getID() == options::OPT_W_Group)) 688 continue; 689 ArgStringList ASL; 690 A->render(Args, ASL); 691 for (const auto &arg : ASL) { 692 StringRef ArgStr(arg); 693 Opts.CmdArgs.insert(Opts.CmdArgs.end(), ArgStr.begin(), ArgStr.end()); 694 // using \00 to seperate each commandline options. 695 Opts.CmdArgs.push_back('\0'); 696 } 697 } 698 } 699 700 Opts.InstrumentFunctions = Args.hasArg(OPT_finstrument_functions); 701 Opts.XRayInstrumentFunctions = Args.hasArg(OPT_fxray_instrument); 702 Opts.XRayInstructionThreshold = 703 getLastArgIntValue(Args, OPT_fxray_instruction_threshold_, 200, Diags); 704 Opts.InstrumentForProfiling = Args.hasArg(OPT_pg); 705 Opts.EmitOpenCLArgMetadata = Args.hasArg(OPT_cl_kernel_arg_info); 706 Opts.CompressDebugSections = Args.hasArg(OPT_compress_debug_sections); 707 Opts.RelaxELFRelocations = Args.hasArg(OPT_mrelax_relocations); 708 Opts.DebugCompilationDir = Args.getLastArgValue(OPT_fdebug_compilation_dir); 709 for (auto A : Args.filtered(OPT_mlink_bitcode_file, OPT_mlink_cuda_bitcode)) { 710 unsigned LinkFlags = llvm::Linker::Flags::None; 711 if (A->getOption().matches(OPT_mlink_cuda_bitcode)) 712 LinkFlags = llvm::Linker::Flags::LinkOnlyNeeded | 713 llvm::Linker::Flags::InternalizeLinkedSymbols; 714 Opts.LinkBitcodeFiles.push_back(std::make_pair(LinkFlags, A->getValue())); 715 } 716 Opts.SanitizeCoverageType = 717 getLastArgIntValue(Args, OPT_fsanitize_coverage_type, 0, Diags); 718 Opts.SanitizeCoverageIndirectCalls = 719 Args.hasArg(OPT_fsanitize_coverage_indirect_calls); 720 Opts.SanitizeCoverageTraceBB = Args.hasArg(OPT_fsanitize_coverage_trace_bb); 721 Opts.SanitizeCoverageTraceCmp = Args.hasArg(OPT_fsanitize_coverage_trace_cmp); 722 Opts.SanitizeCoverageTraceDiv = Args.hasArg(OPT_fsanitize_coverage_trace_div); 723 Opts.SanitizeCoverageTraceGep = Args.hasArg(OPT_fsanitize_coverage_trace_gep); 724 Opts.SanitizeCoverage8bitCounters = 725 Args.hasArg(OPT_fsanitize_coverage_8bit_counters); 726 Opts.SanitizeCoverageTracePC = Args.hasArg(OPT_fsanitize_coverage_trace_pc); 727 Opts.SanitizeMemoryTrackOrigins = 728 getLastArgIntValue(Args, OPT_fsanitize_memory_track_origins_EQ, 0, Diags); 729 Opts.SanitizeMemoryUseAfterDtor = 730 Args.hasArg(OPT_fsanitize_memory_use_after_dtor); 731 Opts.SanitizeCfiCrossDso = Args.hasArg(OPT_fsanitize_cfi_cross_dso); 732 Opts.SanitizeStats = Args.hasArg(OPT_fsanitize_stats); 733 Opts.SanitizeAddressUseAfterScope = 734 Args.hasArg(OPT_fsanitize_address_use_after_scope); 735 Opts.SSPBufferSize = 736 getLastArgIntValue(Args, OPT_stack_protector_buffer_size, 8, Diags); 737 Opts.StackRealignment = Args.hasArg(OPT_mstackrealign); 738 if (Arg *A = Args.getLastArg(OPT_mstack_alignment)) { 739 StringRef Val = A->getValue(); 740 unsigned StackAlignment = Opts.StackAlignment; 741 Val.getAsInteger(10, StackAlignment); 742 Opts.StackAlignment = StackAlignment; 743 } 744 745 if (Arg *A = Args.getLastArg(OPT_mstack_probe_size)) { 746 StringRef Val = A->getValue(); 747 unsigned StackProbeSize = Opts.StackProbeSize; 748 Val.getAsInteger(0, StackProbeSize); 749 Opts.StackProbeSize = StackProbeSize; 750 } 751 752 if (Arg *A = Args.getLastArg(OPT_fobjc_dispatch_method_EQ)) { 753 StringRef Name = A->getValue(); 754 unsigned Method = llvm::StringSwitch<unsigned>(Name) 755 .Case("legacy", CodeGenOptions::Legacy) 756 .Case("non-legacy", CodeGenOptions::NonLegacy) 757 .Case("mixed", CodeGenOptions::Mixed) 758 .Default(~0U); 759 if (Method == ~0U) { 760 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Name; 761 Success = false; 762 } else { 763 Opts.setObjCDispatchMethod( 764 static_cast<CodeGenOptions::ObjCDispatchMethodKind>(Method)); 765 } 766 } 767 768 Opts.EmulatedTLS = 769 Args.hasFlag(OPT_femulated_tls, OPT_fno_emulated_tls, false); 770 771 if (Arg *A = Args.getLastArg(OPT_ftlsmodel_EQ)) { 772 StringRef Name = A->getValue(); 773 unsigned Model = llvm::StringSwitch<unsigned>(Name) 774 .Case("global-dynamic", CodeGenOptions::GeneralDynamicTLSModel) 775 .Case("local-dynamic", CodeGenOptions::LocalDynamicTLSModel) 776 .Case("initial-exec", CodeGenOptions::InitialExecTLSModel) 777 .Case("local-exec", CodeGenOptions::LocalExecTLSModel) 778 .Default(~0U); 779 if (Model == ~0U) { 780 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Name; 781 Success = false; 782 } else { 783 Opts.setDefaultTLSModel(static_cast<CodeGenOptions::TLSModel>(Model)); 784 } 785 } 786 787 if (Arg *A = Args.getLastArg(OPT_ffp_contract)) { 788 StringRef Val = A->getValue(); 789 if (Val == "fast") 790 Opts.setFPContractMode(CodeGenOptions::FPC_Fast); 791 else if (Val == "on") 792 Opts.setFPContractMode(CodeGenOptions::FPC_On); 793 else if (Val == "off") 794 Opts.setFPContractMode(CodeGenOptions::FPC_Off); 795 else 796 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Val; 797 } 798 799 if (Arg *A = Args.getLastArg(OPT_fdenormal_fp_math_EQ)) { 800 StringRef Val = A->getValue(); 801 if (Val == "ieee") 802 Opts.FPDenormalMode = "ieee"; 803 else if (Val == "preserve-sign") 804 Opts.FPDenormalMode = "preserve-sign"; 805 else if (Val == "positive-zero") 806 Opts.FPDenormalMode = "positive-zero"; 807 else 808 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Val; 809 } 810 811 if (Arg *A = Args.getLastArg(OPT_fpcc_struct_return, OPT_freg_struct_return)) { 812 if (A->getOption().matches(OPT_fpcc_struct_return)) { 813 Opts.setStructReturnConvention(CodeGenOptions::SRCK_OnStack); 814 } else { 815 assert(A->getOption().matches(OPT_freg_struct_return)); 816 Opts.setStructReturnConvention(CodeGenOptions::SRCK_InRegs); 817 } 818 } 819 820 Opts.DependentLibraries = Args.getAllArgValues(OPT_dependent_lib); 821 Opts.LinkerOptions = Args.getAllArgValues(OPT_linker_option); 822 bool NeedLocTracking = false; 823 824 if (Arg *A = Args.getLastArg(OPT_Rpass_EQ)) { 825 Opts.OptimizationRemarkPattern = 826 GenerateOptimizationRemarkRegex(Diags, Args, A); 827 NeedLocTracking = true; 828 } 829 830 if (Arg *A = Args.getLastArg(OPT_Rpass_missed_EQ)) { 831 Opts.OptimizationRemarkMissedPattern = 832 GenerateOptimizationRemarkRegex(Diags, Args, A); 833 NeedLocTracking = true; 834 } 835 836 if (Arg *A = Args.getLastArg(OPT_Rpass_analysis_EQ)) { 837 Opts.OptimizationRemarkAnalysisPattern = 838 GenerateOptimizationRemarkRegex(Diags, Args, A); 839 NeedLocTracking = true; 840 } 841 842 // If the user requested to use a sample profile for PGO, then the 843 // backend will need to track source location information so the profile 844 // can be incorporated into the IR. 845 if (!Opts.SampleProfileFile.empty()) 846 NeedLocTracking = true; 847 848 // If the user requested a flag that requires source locations available in 849 // the backend, make sure that the backend tracks source location information. 850 if (NeedLocTracking && Opts.getDebugInfo() == codegenoptions::NoDebugInfo) 851 Opts.setDebugInfo(codegenoptions::LocTrackingOnly); 852 853 Opts.RewriteMapFiles = Args.getAllArgValues(OPT_frewrite_map_file); 854 855 // Parse -fsanitize-recover= arguments. 856 // FIXME: Report unrecoverable sanitizers incorrectly specified here. 857 parseSanitizerKinds("-fsanitize-recover=", 858 Args.getAllArgValues(OPT_fsanitize_recover_EQ), Diags, 859 Opts.SanitizeRecover); 860 parseSanitizerKinds("-fsanitize-trap=", 861 Args.getAllArgValues(OPT_fsanitize_trap_EQ), Diags, 862 Opts.SanitizeTrap); 863 864 Opts.CudaGpuBinaryFileNames = 865 Args.getAllArgValues(OPT_fcuda_include_gpubinary); 866 867 Opts.Backchain = Args.hasArg(OPT_mbackchain); 868 869 Opts.EmitCheckPathComponentsToStrip = getLastArgIntValue( 870 Args, OPT_fsanitize_undefined_strip_path_components_EQ, 0, Diags); 871 872 return Success; 873 } 874 875 static void ParseDependencyOutputArgs(DependencyOutputOptions &Opts, 876 ArgList &Args) { 877 using namespace options; 878 Opts.OutputFile = Args.getLastArgValue(OPT_dependency_file); 879 Opts.Targets = Args.getAllArgValues(OPT_MT); 880 Opts.IncludeSystemHeaders = Args.hasArg(OPT_sys_header_deps); 881 Opts.IncludeModuleFiles = Args.hasArg(OPT_module_file_deps); 882 Opts.UsePhonyTargets = Args.hasArg(OPT_MP); 883 Opts.ShowHeaderIncludes = Args.hasArg(OPT_H); 884 Opts.HeaderIncludeOutputFile = Args.getLastArgValue(OPT_header_include_file); 885 Opts.AddMissingHeaderDeps = Args.hasArg(OPT_MG); 886 Opts.PrintShowIncludes = Args.hasArg(OPT_show_includes); 887 Opts.DOTOutputFile = Args.getLastArgValue(OPT_dependency_dot); 888 Opts.ModuleDependencyOutputDir = 889 Args.getLastArgValue(OPT_module_dependency_dir); 890 if (Args.hasArg(OPT_MV)) 891 Opts.OutputFormat = DependencyOutputFormat::NMake; 892 // Add sanitizer blacklists as extra dependencies. 893 // They won't be discovered by the regular preprocessor, so 894 // we let make / ninja to know about this implicit dependency. 895 Opts.ExtraDeps = Args.getAllArgValues(OPT_fdepfile_entry); 896 auto ModuleFiles = Args.getAllArgValues(OPT_fmodule_file); 897 Opts.ExtraDeps.insert(Opts.ExtraDeps.end(), ModuleFiles.begin(), 898 ModuleFiles.end()); 899 } 900 901 static bool parseShowColorsArgs(const ArgList &Args, bool DefaultColor) { 902 // Color diagnostics default to auto ("on" if terminal supports) in the driver 903 // but default to off in cc1, needing an explicit OPT_fdiagnostics_color. 904 // Support both clang's -f[no-]color-diagnostics and gcc's 905 // -f[no-]diagnostics-colors[=never|always|auto]. 906 enum { 907 Colors_On, 908 Colors_Off, 909 Colors_Auto 910 } ShowColors = DefaultColor ? Colors_Auto : Colors_Off; 911 for (Arg *A : Args) { 912 const Option &O = A->getOption(); 913 if (!O.matches(options::OPT_fcolor_diagnostics) && 914 !O.matches(options::OPT_fdiagnostics_color) && 915 !O.matches(options::OPT_fno_color_diagnostics) && 916 !O.matches(options::OPT_fno_diagnostics_color) && 917 !O.matches(options::OPT_fdiagnostics_color_EQ)) 918 continue; 919 920 if (O.matches(options::OPT_fcolor_diagnostics) || 921 O.matches(options::OPT_fdiagnostics_color)) { 922 ShowColors = Colors_On; 923 } else if (O.matches(options::OPT_fno_color_diagnostics) || 924 O.matches(options::OPT_fno_diagnostics_color)) { 925 ShowColors = Colors_Off; 926 } else { 927 assert(O.matches(options::OPT_fdiagnostics_color_EQ)); 928 StringRef Value(A->getValue()); 929 if (Value == "always") 930 ShowColors = Colors_On; 931 else if (Value == "never") 932 ShowColors = Colors_Off; 933 else if (Value == "auto") 934 ShowColors = Colors_Auto; 935 } 936 } 937 if (ShowColors == Colors_On || 938 (ShowColors == Colors_Auto && llvm::sys::Process::StandardErrHasColors())) 939 return true; 940 return false; 941 } 942 943 bool clang::ParseDiagnosticArgs(DiagnosticOptions &Opts, ArgList &Args, 944 DiagnosticsEngine *Diags, 945 bool DefaultDiagColor) { 946 using namespace options; 947 bool Success = true; 948 949 Opts.DiagnosticLogFile = Args.getLastArgValue(OPT_diagnostic_log_file); 950 if (Arg *A = 951 Args.getLastArg(OPT_diagnostic_serialized_file, OPT__serialize_diags)) 952 Opts.DiagnosticSerializationFile = A->getValue(); 953 Opts.IgnoreWarnings = Args.hasArg(OPT_w); 954 Opts.NoRewriteMacros = Args.hasArg(OPT_Wno_rewrite_macros); 955 Opts.Pedantic = Args.hasArg(OPT_pedantic); 956 Opts.PedanticErrors = Args.hasArg(OPT_pedantic_errors); 957 Opts.ShowCarets = !Args.hasArg(OPT_fno_caret_diagnostics); 958 Opts.ShowColors = parseShowColorsArgs(Args, DefaultDiagColor); 959 Opts.ShowColumn = Args.hasFlag(OPT_fshow_column, 960 OPT_fno_show_column, 961 /*Default=*/true); 962 Opts.ShowFixits = !Args.hasArg(OPT_fno_diagnostics_fixit_info); 963 Opts.ShowLocation = !Args.hasArg(OPT_fno_show_source_location); 964 Opts.AbsolutePath = Args.hasArg(OPT_fdiagnostics_absolute_paths); 965 Opts.ShowOptionNames = Args.hasArg(OPT_fdiagnostics_show_option); 966 967 llvm::sys::Process::UseANSIEscapeCodes(Args.hasArg(OPT_fansi_escape_codes)); 968 969 // Default behavior is to not to show note include stacks. 970 Opts.ShowNoteIncludeStack = false; 971 if (Arg *A = Args.getLastArg(OPT_fdiagnostics_show_note_include_stack, 972 OPT_fno_diagnostics_show_note_include_stack)) 973 if (A->getOption().matches(OPT_fdiagnostics_show_note_include_stack)) 974 Opts.ShowNoteIncludeStack = true; 975 976 StringRef ShowOverloads = 977 Args.getLastArgValue(OPT_fshow_overloads_EQ, "all"); 978 if (ShowOverloads == "best") 979 Opts.setShowOverloads(Ovl_Best); 980 else if (ShowOverloads == "all") 981 Opts.setShowOverloads(Ovl_All); 982 else { 983 Success = false; 984 if (Diags) 985 Diags->Report(diag::err_drv_invalid_value) 986 << Args.getLastArg(OPT_fshow_overloads_EQ)->getAsString(Args) 987 << ShowOverloads; 988 } 989 990 StringRef ShowCategory = 991 Args.getLastArgValue(OPT_fdiagnostics_show_category, "none"); 992 if (ShowCategory == "none") 993 Opts.ShowCategories = 0; 994 else if (ShowCategory == "id") 995 Opts.ShowCategories = 1; 996 else if (ShowCategory == "name") 997 Opts.ShowCategories = 2; 998 else { 999 Success = false; 1000 if (Diags) 1001 Diags->Report(diag::err_drv_invalid_value) 1002 << Args.getLastArg(OPT_fdiagnostics_show_category)->getAsString(Args) 1003 << ShowCategory; 1004 } 1005 1006 StringRef Format = 1007 Args.getLastArgValue(OPT_fdiagnostics_format, "clang"); 1008 if (Format == "clang") 1009 Opts.setFormat(DiagnosticOptions::Clang); 1010 else if (Format == "msvc") 1011 Opts.setFormat(DiagnosticOptions::MSVC); 1012 else if (Format == "msvc-fallback") { 1013 Opts.setFormat(DiagnosticOptions::MSVC); 1014 Opts.CLFallbackMode = true; 1015 } else if (Format == "vi") 1016 Opts.setFormat(DiagnosticOptions::Vi); 1017 else { 1018 Success = false; 1019 if (Diags) 1020 Diags->Report(diag::err_drv_invalid_value) 1021 << Args.getLastArg(OPT_fdiagnostics_format)->getAsString(Args) 1022 << Format; 1023 } 1024 1025 Opts.ShowSourceRanges = Args.hasArg(OPT_fdiagnostics_print_source_range_info); 1026 Opts.ShowParseableFixits = Args.hasArg(OPT_fdiagnostics_parseable_fixits); 1027 Opts.ShowPresumedLoc = !Args.hasArg(OPT_fno_diagnostics_use_presumed_location); 1028 Opts.VerifyDiagnostics = Args.hasArg(OPT_verify); 1029 DiagnosticLevelMask DiagMask = DiagnosticLevelMask::None; 1030 Success &= parseDiagnosticLevelMask("-verify-ignore-unexpected=", 1031 Args.getAllArgValues(OPT_verify_ignore_unexpected_EQ), 1032 Diags, DiagMask); 1033 if (Args.hasArg(OPT_verify_ignore_unexpected)) 1034 DiagMask = DiagnosticLevelMask::All; 1035 Opts.setVerifyIgnoreUnexpected(DiagMask); 1036 Opts.ElideType = !Args.hasArg(OPT_fno_elide_type); 1037 Opts.ShowTemplateTree = Args.hasArg(OPT_fdiagnostics_show_template_tree); 1038 Opts.ErrorLimit = getLastArgIntValue(Args, OPT_ferror_limit, 0, Diags); 1039 Opts.MacroBacktraceLimit = 1040 getLastArgIntValue(Args, OPT_fmacro_backtrace_limit, 1041 DiagnosticOptions::DefaultMacroBacktraceLimit, Diags); 1042 Opts.TemplateBacktraceLimit = getLastArgIntValue( 1043 Args, OPT_ftemplate_backtrace_limit, 1044 DiagnosticOptions::DefaultTemplateBacktraceLimit, Diags); 1045 Opts.ConstexprBacktraceLimit = getLastArgIntValue( 1046 Args, OPT_fconstexpr_backtrace_limit, 1047 DiagnosticOptions::DefaultConstexprBacktraceLimit, Diags); 1048 Opts.SpellCheckingLimit = getLastArgIntValue( 1049 Args, OPT_fspell_checking_limit, 1050 DiagnosticOptions::DefaultSpellCheckingLimit, Diags); 1051 Opts.TabStop = getLastArgIntValue(Args, OPT_ftabstop, 1052 DiagnosticOptions::DefaultTabStop, Diags); 1053 if (Opts.TabStop == 0 || Opts.TabStop > DiagnosticOptions::MaxTabStop) { 1054 Opts.TabStop = DiagnosticOptions::DefaultTabStop; 1055 if (Diags) 1056 Diags->Report(diag::warn_ignoring_ftabstop_value) 1057 << Opts.TabStop << DiagnosticOptions::DefaultTabStop; 1058 } 1059 Opts.MessageLength = getLastArgIntValue(Args, OPT_fmessage_length, 0, Diags); 1060 addDiagnosticArgs(Args, OPT_W_Group, OPT_W_value_Group, Opts.Warnings); 1061 addDiagnosticArgs(Args, OPT_R_Group, OPT_R_value_Group, Opts.Remarks); 1062 1063 return Success; 1064 } 1065 1066 static void ParseFileSystemArgs(FileSystemOptions &Opts, ArgList &Args) { 1067 Opts.WorkingDir = Args.getLastArgValue(OPT_working_directory); 1068 } 1069 1070 /// Parse the argument to the -ftest-module-file-extension 1071 /// command-line argument. 1072 /// 1073 /// \returns true on error, false on success. 1074 static bool parseTestModuleFileExtensionArg(StringRef Arg, 1075 std::string &BlockName, 1076 unsigned &MajorVersion, 1077 unsigned &MinorVersion, 1078 bool &Hashed, 1079 std::string &UserInfo) { 1080 SmallVector<StringRef, 5> Args; 1081 Arg.split(Args, ':', 5); 1082 if (Args.size() < 5) 1083 return true; 1084 1085 BlockName = Args[0]; 1086 if (Args[1].getAsInteger(10, MajorVersion)) return true; 1087 if (Args[2].getAsInteger(10, MinorVersion)) return true; 1088 if (Args[3].getAsInteger(2, Hashed)) return true; 1089 if (Args.size() > 4) 1090 UserInfo = Args[4]; 1091 return false; 1092 } 1093 1094 static InputKind ParseFrontendArgs(FrontendOptions &Opts, ArgList &Args, 1095 DiagnosticsEngine &Diags) { 1096 using namespace options; 1097 Opts.ProgramAction = frontend::ParseSyntaxOnly; 1098 if (const Arg *A = Args.getLastArg(OPT_Action_Group)) { 1099 switch (A->getOption().getID()) { 1100 default: 1101 llvm_unreachable("Invalid option in group!"); 1102 case OPT_ast_list: 1103 Opts.ProgramAction = frontend::ASTDeclList; break; 1104 case OPT_ast_dump: 1105 case OPT_ast_dump_lookups: 1106 Opts.ProgramAction = frontend::ASTDump; break; 1107 case OPT_ast_print: 1108 Opts.ProgramAction = frontend::ASTPrint; break; 1109 case OPT_ast_view: 1110 Opts.ProgramAction = frontend::ASTView; break; 1111 case OPT_dump_raw_tokens: 1112 Opts.ProgramAction = frontend::DumpRawTokens; break; 1113 case OPT_dump_tokens: 1114 Opts.ProgramAction = frontend::DumpTokens; break; 1115 case OPT_S: 1116 Opts.ProgramAction = frontend::EmitAssembly; break; 1117 case OPT_emit_llvm_bc: 1118 Opts.ProgramAction = frontend::EmitBC; break; 1119 case OPT_emit_html: 1120 Opts.ProgramAction = frontend::EmitHTML; break; 1121 case OPT_emit_llvm: 1122 Opts.ProgramAction = frontend::EmitLLVM; break; 1123 case OPT_emit_llvm_only: 1124 Opts.ProgramAction = frontend::EmitLLVMOnly; break; 1125 case OPT_emit_codegen_only: 1126 Opts.ProgramAction = frontend::EmitCodeGenOnly; break; 1127 case OPT_emit_obj: 1128 Opts.ProgramAction = frontend::EmitObj; break; 1129 case OPT_fixit_EQ: 1130 Opts.FixItSuffix = A->getValue(); 1131 // fall-through! 1132 case OPT_fixit: 1133 Opts.ProgramAction = frontend::FixIt; break; 1134 case OPT_emit_module: 1135 Opts.ProgramAction = frontend::GenerateModule; break; 1136 case OPT_emit_module_interface: 1137 Opts.ProgramAction = frontend::GenerateModuleInterface; break; 1138 case OPT_emit_pch: 1139 Opts.ProgramAction = frontend::GeneratePCH; break; 1140 case OPT_emit_pth: 1141 Opts.ProgramAction = frontend::GeneratePTH; break; 1142 case OPT_init_only: 1143 Opts.ProgramAction = frontend::InitOnly; break; 1144 case OPT_fsyntax_only: 1145 Opts.ProgramAction = frontend::ParseSyntaxOnly; break; 1146 case OPT_module_file_info: 1147 Opts.ProgramAction = frontend::ModuleFileInfo; break; 1148 case OPT_verify_pch: 1149 Opts.ProgramAction = frontend::VerifyPCH; break; 1150 case OPT_print_decl_contexts: 1151 Opts.ProgramAction = frontend::PrintDeclContext; break; 1152 case OPT_print_preamble: 1153 Opts.ProgramAction = frontend::PrintPreamble; break; 1154 case OPT_E: 1155 Opts.ProgramAction = frontend::PrintPreprocessedInput; break; 1156 case OPT_rewrite_macros: 1157 Opts.ProgramAction = frontend::RewriteMacros; break; 1158 case OPT_rewrite_objc: 1159 Opts.ProgramAction = frontend::RewriteObjC; break; 1160 case OPT_rewrite_test: 1161 Opts.ProgramAction = frontend::RewriteTest; break; 1162 case OPT_analyze: 1163 Opts.ProgramAction = frontend::RunAnalysis; break; 1164 case OPT_migrate: 1165 Opts.ProgramAction = frontend::MigrateSource; break; 1166 case OPT_Eonly: 1167 Opts.ProgramAction = frontend::RunPreprocessorOnly; break; 1168 } 1169 } 1170 1171 if (const Arg* A = Args.getLastArg(OPT_plugin)) { 1172 Opts.Plugins.emplace_back(A->getValue(0)); 1173 Opts.ProgramAction = frontend::PluginAction; 1174 Opts.ActionName = A->getValue(); 1175 } 1176 Opts.AddPluginActions = Args.getAllArgValues(OPT_add_plugin); 1177 for (const Arg *AA : Args.filtered(OPT_plugin_arg)) 1178 Opts.PluginArgs[AA->getValue(0)].emplace_back(AA->getValue(1)); 1179 1180 for (const std::string &Arg : 1181 Args.getAllArgValues(OPT_ftest_module_file_extension_EQ)) { 1182 std::string BlockName; 1183 unsigned MajorVersion; 1184 unsigned MinorVersion; 1185 bool Hashed; 1186 std::string UserInfo; 1187 if (parseTestModuleFileExtensionArg(Arg, BlockName, MajorVersion, 1188 MinorVersion, Hashed, UserInfo)) { 1189 Diags.Report(diag::err_test_module_file_extension_format) << Arg; 1190 1191 continue; 1192 } 1193 1194 // Add the testing module file extension. 1195 Opts.ModuleFileExtensions.push_back( 1196 new TestModuleFileExtension(BlockName, MajorVersion, MinorVersion, 1197 Hashed, UserInfo)); 1198 } 1199 1200 if (const Arg *A = Args.getLastArg(OPT_code_completion_at)) { 1201 Opts.CodeCompletionAt = 1202 ParsedSourceLocation::FromString(A->getValue()); 1203 if (Opts.CodeCompletionAt.FileName.empty()) 1204 Diags.Report(diag::err_drv_invalid_value) 1205 << A->getAsString(Args) << A->getValue(); 1206 } 1207 Opts.DisableFree = Args.hasArg(OPT_disable_free); 1208 1209 Opts.OutputFile = Args.getLastArgValue(OPT_o); 1210 Opts.Plugins = Args.getAllArgValues(OPT_load); 1211 Opts.RelocatablePCH = Args.hasArg(OPT_relocatable_pch); 1212 Opts.ShowHelp = Args.hasArg(OPT_help); 1213 Opts.ShowStats = Args.hasArg(OPT_print_stats); 1214 Opts.ShowTimers = Args.hasArg(OPT_ftime_report); 1215 Opts.ShowVersion = Args.hasArg(OPT_version); 1216 Opts.ASTMergeFiles = Args.getAllArgValues(OPT_ast_merge); 1217 Opts.LLVMArgs = Args.getAllArgValues(OPT_mllvm); 1218 Opts.FixWhatYouCan = Args.hasArg(OPT_fix_what_you_can); 1219 Opts.FixOnlyWarnings = Args.hasArg(OPT_fix_only_warnings); 1220 Opts.FixAndRecompile = Args.hasArg(OPT_fixit_recompile); 1221 Opts.FixToTemporaries = Args.hasArg(OPT_fixit_to_temp); 1222 Opts.ASTDumpDecls = Args.hasArg(OPT_ast_dump); 1223 Opts.ASTDumpFilter = Args.getLastArgValue(OPT_ast_dump_filter); 1224 Opts.ASTDumpLookups = Args.hasArg(OPT_ast_dump_lookups); 1225 Opts.UseGlobalModuleIndex = !Args.hasArg(OPT_fno_modules_global_index); 1226 Opts.GenerateGlobalModuleIndex = Opts.UseGlobalModuleIndex; 1227 Opts.ModuleMapFiles = Args.getAllArgValues(OPT_fmodule_map_file); 1228 Opts.ModuleFiles = Args.getAllArgValues(OPT_fmodule_file); 1229 Opts.ModulesEmbedFiles = Args.getAllArgValues(OPT_fmodules_embed_file_EQ); 1230 Opts.ModulesEmbedAllFiles = Args.hasArg(OPT_fmodules_embed_all_files); 1231 Opts.IncludeTimestamps = !Args.hasArg(OPT_fno_pch_timestamp); 1232 1233 Opts.CodeCompleteOpts.IncludeMacros 1234 = Args.hasArg(OPT_code_completion_macros); 1235 Opts.CodeCompleteOpts.IncludeCodePatterns 1236 = Args.hasArg(OPT_code_completion_patterns); 1237 Opts.CodeCompleteOpts.IncludeGlobals 1238 = !Args.hasArg(OPT_no_code_completion_globals); 1239 Opts.CodeCompleteOpts.IncludeBriefComments 1240 = Args.hasArg(OPT_code_completion_brief_comments); 1241 1242 Opts.OverrideRecordLayoutsFile 1243 = Args.getLastArgValue(OPT_foverride_record_layout_EQ); 1244 Opts.AuxTriple = 1245 llvm::Triple::normalize(Args.getLastArgValue(OPT_aux_triple)); 1246 Opts.FindPchSource = Args.getLastArgValue(OPT_find_pch_source_EQ); 1247 1248 if (const Arg *A = Args.getLastArg(OPT_arcmt_check, 1249 OPT_arcmt_modify, 1250 OPT_arcmt_migrate)) { 1251 switch (A->getOption().getID()) { 1252 default: 1253 llvm_unreachable("missed a case"); 1254 case OPT_arcmt_check: 1255 Opts.ARCMTAction = FrontendOptions::ARCMT_Check; 1256 break; 1257 case OPT_arcmt_modify: 1258 Opts.ARCMTAction = FrontendOptions::ARCMT_Modify; 1259 break; 1260 case OPT_arcmt_migrate: 1261 Opts.ARCMTAction = FrontendOptions::ARCMT_Migrate; 1262 break; 1263 } 1264 } 1265 Opts.MTMigrateDir = Args.getLastArgValue(OPT_mt_migrate_directory); 1266 Opts.ARCMTMigrateReportOut 1267 = Args.getLastArgValue(OPT_arcmt_migrate_report_output); 1268 Opts.ARCMTMigrateEmitARCErrors 1269 = Args.hasArg(OPT_arcmt_migrate_emit_arc_errors); 1270 1271 if (Args.hasArg(OPT_objcmt_migrate_literals)) 1272 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_Literals; 1273 if (Args.hasArg(OPT_objcmt_migrate_subscripting)) 1274 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_Subscripting; 1275 if (Args.hasArg(OPT_objcmt_migrate_property_dot_syntax)) 1276 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_PropertyDotSyntax; 1277 if (Args.hasArg(OPT_objcmt_migrate_property)) 1278 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_Property; 1279 if (Args.hasArg(OPT_objcmt_migrate_readonly_property)) 1280 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_ReadonlyProperty; 1281 if (Args.hasArg(OPT_objcmt_migrate_readwrite_property)) 1282 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_ReadwriteProperty; 1283 if (Args.hasArg(OPT_objcmt_migrate_annotation)) 1284 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_Annotation; 1285 if (Args.hasArg(OPT_objcmt_returns_innerpointer_property)) 1286 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_ReturnsInnerPointerProperty; 1287 if (Args.hasArg(OPT_objcmt_migrate_instancetype)) 1288 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_Instancetype; 1289 if (Args.hasArg(OPT_objcmt_migrate_nsmacros)) 1290 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_NsMacros; 1291 if (Args.hasArg(OPT_objcmt_migrate_protocol_conformance)) 1292 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_ProtocolConformance; 1293 if (Args.hasArg(OPT_objcmt_atomic_property)) 1294 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_AtomicProperty; 1295 if (Args.hasArg(OPT_objcmt_ns_nonatomic_iosonly)) 1296 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_NsAtomicIOSOnlyProperty; 1297 if (Args.hasArg(OPT_objcmt_migrate_designated_init)) 1298 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_DesignatedInitializer; 1299 if (Args.hasArg(OPT_objcmt_migrate_all)) 1300 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_MigrateDecls; 1301 1302 Opts.ObjCMTWhiteListPath = Args.getLastArgValue(OPT_objcmt_whitelist_dir_path); 1303 1304 if (Opts.ARCMTAction != FrontendOptions::ARCMT_None && 1305 Opts.ObjCMTAction != FrontendOptions::ObjCMT_None) { 1306 Diags.Report(diag::err_drv_argument_not_allowed_with) 1307 << "ARC migration" << "ObjC migration"; 1308 } 1309 1310 InputKind DashX = IK_None; 1311 if (const Arg *A = Args.getLastArg(OPT_x)) { 1312 DashX = llvm::StringSwitch<InputKind>(A->getValue()) 1313 .Case("c", IK_C) 1314 .Case("cl", IK_OpenCL) 1315 .Case("cuda", IK_CUDA) 1316 .Case("c++", IK_CXX) 1317 .Case("c++-module", IK_CXX) 1318 .Case("objective-c", IK_ObjC) 1319 .Case("objective-c++", IK_ObjCXX) 1320 .Case("cpp-output", IK_PreprocessedC) 1321 .Case("assembler-with-cpp", IK_Asm) 1322 .Case("c++-cpp-output", IK_PreprocessedCXX) 1323 .Case("c++-module-cpp-output", IK_PreprocessedCXX) 1324 .Case("cuda-cpp-output", IK_PreprocessedCuda) 1325 .Case("objective-c-cpp-output", IK_PreprocessedObjC) 1326 .Case("objc-cpp-output", IK_PreprocessedObjC) 1327 .Case("objective-c++-cpp-output", IK_PreprocessedObjCXX) 1328 .Case("objc++-cpp-output", IK_PreprocessedObjCXX) 1329 .Case("c-header", IK_C) 1330 .Case("cl-header", IK_OpenCL) 1331 .Case("objective-c-header", IK_ObjC) 1332 .Case("c++-header", IK_CXX) 1333 .Case("objective-c++-header", IK_ObjCXX) 1334 .Cases("ast", "pcm", IK_AST) 1335 .Case("ir", IK_LLVM_IR) 1336 .Case("renderscript", IK_RenderScript) 1337 .Default(IK_None); 1338 if (DashX == IK_None) 1339 Diags.Report(diag::err_drv_invalid_value) 1340 << A->getAsString(Args) << A->getValue(); 1341 } 1342 1343 // '-' is the default input if none is given. 1344 std::vector<std::string> Inputs = Args.getAllArgValues(OPT_INPUT); 1345 Opts.Inputs.clear(); 1346 if (Inputs.empty()) 1347 Inputs.push_back("-"); 1348 for (unsigned i = 0, e = Inputs.size(); i != e; ++i) { 1349 InputKind IK = DashX; 1350 if (IK == IK_None) { 1351 IK = FrontendOptions::getInputKindForExtension( 1352 StringRef(Inputs[i]).rsplit('.').second); 1353 // FIXME: Remove this hack. 1354 if (i == 0) 1355 DashX = IK; 1356 } 1357 Opts.Inputs.emplace_back(std::move(Inputs[i]), IK); 1358 } 1359 1360 return DashX; 1361 } 1362 1363 std::string CompilerInvocation::GetResourcesPath(const char *Argv0, 1364 void *MainAddr) { 1365 std::string ClangExecutable = 1366 llvm::sys::fs::getMainExecutable(Argv0, MainAddr); 1367 StringRef Dir = llvm::sys::path::parent_path(ClangExecutable); 1368 1369 // Compute the path to the resource directory. 1370 StringRef ClangResourceDir(CLANG_RESOURCE_DIR); 1371 SmallString<128> P(Dir); 1372 if (ClangResourceDir != "") 1373 llvm::sys::path::append(P, ClangResourceDir); 1374 else 1375 llvm::sys::path::append(P, "..", Twine("lib") + CLANG_LIBDIR_SUFFIX, 1376 "clang", CLANG_VERSION_STRING); 1377 1378 return P.str(); 1379 } 1380 1381 static void ParseHeaderSearchArgs(HeaderSearchOptions &Opts, ArgList &Args) { 1382 using namespace options; 1383 Opts.Sysroot = Args.getLastArgValue(OPT_isysroot, "/"); 1384 Opts.Verbose = Args.hasArg(OPT_v); 1385 Opts.UseBuiltinIncludes = !Args.hasArg(OPT_nobuiltininc); 1386 Opts.UseStandardSystemIncludes = !Args.hasArg(OPT_nostdsysteminc); 1387 Opts.UseStandardCXXIncludes = !Args.hasArg(OPT_nostdincxx); 1388 if (const Arg *A = Args.getLastArg(OPT_stdlib_EQ)) 1389 Opts.UseLibcxx = (strcmp(A->getValue(), "libc++") == 0); 1390 Opts.ResourceDir = Args.getLastArgValue(OPT_resource_dir); 1391 Opts.ModuleCachePath = Args.getLastArgValue(OPT_fmodules_cache_path); 1392 Opts.ModuleUserBuildPath = Args.getLastArgValue(OPT_fmodules_user_build_path); 1393 for (const Arg *A : Args.filtered(OPT_fprebuilt_module_path)) 1394 Opts.AddPrebuiltModulePath(A->getValue()); 1395 Opts.DisableModuleHash = Args.hasArg(OPT_fdisable_module_hash); 1396 Opts.ModulesValidateDiagnosticOptions = 1397 !Args.hasArg(OPT_fmodules_disable_diagnostic_validation); 1398 Opts.ImplicitModuleMaps = Args.hasArg(OPT_fimplicit_module_maps); 1399 Opts.ModuleMapFileHomeIsCwd = Args.hasArg(OPT_fmodule_map_file_home_is_cwd); 1400 Opts.ModuleCachePruneInterval = 1401 getLastArgIntValue(Args, OPT_fmodules_prune_interval, 7 * 24 * 60 * 60); 1402 Opts.ModuleCachePruneAfter = 1403 getLastArgIntValue(Args, OPT_fmodules_prune_after, 31 * 24 * 60 * 60); 1404 Opts.ModulesValidateOncePerBuildSession = 1405 Args.hasArg(OPT_fmodules_validate_once_per_build_session); 1406 Opts.BuildSessionTimestamp = 1407 getLastArgUInt64Value(Args, OPT_fbuild_session_timestamp, 0); 1408 Opts.ModulesValidateSystemHeaders = 1409 Args.hasArg(OPT_fmodules_validate_system_headers); 1410 if (const Arg *A = Args.getLastArg(OPT_fmodule_format_EQ)) 1411 Opts.ModuleFormat = A->getValue(); 1412 1413 for (const Arg *A : Args.filtered(OPT_fmodules_ignore_macro)) { 1414 StringRef MacroDef = A->getValue(); 1415 Opts.ModulesIgnoreMacros.insert(MacroDef.split('=').first); 1416 } 1417 1418 // Add -I..., -F..., and -index-header-map options in order. 1419 bool IsIndexHeaderMap = false; 1420 bool IsSysrootSpecified = 1421 Args.hasArg(OPT__sysroot_EQ) || Args.hasArg(OPT_isysroot); 1422 for (const Arg *A : Args.filtered(OPT_I, OPT_F, OPT_index_header_map)) { 1423 if (A->getOption().matches(OPT_index_header_map)) { 1424 // -index-header-map applies to the next -I or -F. 1425 IsIndexHeaderMap = true; 1426 continue; 1427 } 1428 1429 frontend::IncludeDirGroup Group = 1430 IsIndexHeaderMap ? frontend::IndexHeaderMap : frontend::Angled; 1431 1432 bool IsFramework = A->getOption().matches(OPT_F); 1433 std::string Path = A->getValue(); 1434 1435 if (IsSysrootSpecified && !IsFramework && A->getValue()[0] == '=') { 1436 SmallString<32> Buffer; 1437 llvm::sys::path::append(Buffer, Opts.Sysroot, 1438 llvm::StringRef(A->getValue()).substr(1)); 1439 Path = Buffer.str(); 1440 } 1441 1442 Opts.AddPath(Path.c_str(), Group, IsFramework, 1443 /*IgnoreSysroot*/ true); 1444 IsIndexHeaderMap = false; 1445 } 1446 1447 // Add -iprefix/-iwithprefix/-iwithprefixbefore options. 1448 StringRef Prefix = ""; // FIXME: This isn't the correct default prefix. 1449 for (const Arg *A : 1450 Args.filtered(OPT_iprefix, OPT_iwithprefix, OPT_iwithprefixbefore)) { 1451 if (A->getOption().matches(OPT_iprefix)) 1452 Prefix = A->getValue(); 1453 else if (A->getOption().matches(OPT_iwithprefix)) 1454 Opts.AddPath(Prefix.str() + A->getValue(), frontend::After, false, true); 1455 else 1456 Opts.AddPath(Prefix.str() + A->getValue(), frontend::Angled, false, true); 1457 } 1458 1459 for (const Arg *A : Args.filtered(OPT_idirafter)) 1460 Opts.AddPath(A->getValue(), frontend::After, false, true); 1461 for (const Arg *A : Args.filtered(OPT_iquote)) 1462 Opts.AddPath(A->getValue(), frontend::Quoted, false, true); 1463 for (const Arg *A : Args.filtered(OPT_isystem, OPT_iwithsysroot)) 1464 Opts.AddPath(A->getValue(), frontend::System, false, 1465 !A->getOption().matches(OPT_iwithsysroot)); 1466 for (const Arg *A : Args.filtered(OPT_iframework)) 1467 Opts.AddPath(A->getValue(), frontend::System, true, true); 1468 1469 // Add the paths for the various language specific isystem flags. 1470 for (const Arg *A : Args.filtered(OPT_c_isystem)) 1471 Opts.AddPath(A->getValue(), frontend::CSystem, false, true); 1472 for (const Arg *A : Args.filtered(OPT_cxx_isystem)) 1473 Opts.AddPath(A->getValue(), frontend::CXXSystem, false, true); 1474 for (const Arg *A : Args.filtered(OPT_objc_isystem)) 1475 Opts.AddPath(A->getValue(), frontend::ObjCSystem, false,true); 1476 for (const Arg *A : Args.filtered(OPT_objcxx_isystem)) 1477 Opts.AddPath(A->getValue(), frontend::ObjCXXSystem, false, true); 1478 1479 // Add the internal paths from a driver that detects standard include paths. 1480 for (const Arg *A : 1481 Args.filtered(OPT_internal_isystem, OPT_internal_externc_isystem)) { 1482 frontend::IncludeDirGroup Group = frontend::System; 1483 if (A->getOption().matches(OPT_internal_externc_isystem)) 1484 Group = frontend::ExternCSystem; 1485 Opts.AddPath(A->getValue(), Group, false, true); 1486 } 1487 1488 // Add the path prefixes which are implicitly treated as being system headers. 1489 for (const Arg *A : 1490 Args.filtered(OPT_system_header_prefix, OPT_no_system_header_prefix)) 1491 Opts.AddSystemHeaderPrefix( 1492 A->getValue(), A->getOption().matches(OPT_system_header_prefix)); 1493 1494 for (const Arg *A : Args.filtered(OPT_ivfsoverlay)) 1495 Opts.AddVFSOverlayFile(A->getValue()); 1496 } 1497 1498 static bool isOpenCL(LangStandard::Kind LangStd) { 1499 return LangStd == LangStandard::lang_opencl || 1500 LangStd == LangStandard::lang_opencl11 || 1501 LangStd == LangStandard::lang_opencl12 || 1502 LangStd == LangStandard::lang_opencl20; 1503 } 1504 1505 void CompilerInvocation::setLangDefaults(LangOptions &Opts, InputKind IK, 1506 const llvm::Triple &T, 1507 PreprocessorOptions &PPOpts, 1508 LangStandard::Kind LangStd) { 1509 // Set some properties which depend solely on the input kind; it would be nice 1510 // to move these to the language standard, and have the driver resolve the 1511 // input kind + language standard. 1512 if (IK == IK_Asm) { 1513 Opts.AsmPreprocessor = 1; 1514 } else if (IK == IK_ObjC || 1515 IK == IK_ObjCXX || 1516 IK == IK_PreprocessedObjC || 1517 IK == IK_PreprocessedObjCXX) { 1518 Opts.ObjC1 = Opts.ObjC2 = 1; 1519 } 1520 1521 if (LangStd == LangStandard::lang_unspecified) { 1522 // Based on the base language, pick one. 1523 switch (IK) { 1524 case IK_None: 1525 case IK_AST: 1526 case IK_LLVM_IR: 1527 llvm_unreachable("Invalid input kind!"); 1528 case IK_OpenCL: 1529 LangStd = LangStandard::lang_opencl; 1530 break; 1531 case IK_CUDA: 1532 case IK_PreprocessedCuda: 1533 LangStd = LangStandard::lang_cuda; 1534 break; 1535 case IK_Asm: 1536 case IK_C: 1537 case IK_PreprocessedC: 1538 case IK_ObjC: 1539 case IK_PreprocessedObjC: 1540 // The PS4 uses C99 as the default C standard. 1541 if (T.isPS4()) 1542 LangStd = LangStandard::lang_gnu99; 1543 else 1544 LangStd = LangStandard::lang_gnu11; 1545 break; 1546 case IK_CXX: 1547 case IK_PreprocessedCXX: 1548 case IK_ObjCXX: 1549 case IK_PreprocessedObjCXX: 1550 LangStd = LangStandard::lang_gnucxx98; 1551 break; 1552 case IK_RenderScript: 1553 LangStd = LangStandard::lang_c99; 1554 break; 1555 } 1556 } 1557 1558 const LangStandard &Std = LangStandard::getLangStandardForKind(LangStd); 1559 Opts.LineComment = Std.hasLineComments(); 1560 Opts.C99 = Std.isC99(); 1561 Opts.C11 = Std.isC11(); 1562 Opts.CPlusPlus = Std.isCPlusPlus(); 1563 Opts.CPlusPlus11 = Std.isCPlusPlus11(); 1564 Opts.CPlusPlus14 = Std.isCPlusPlus14(); 1565 Opts.CPlusPlus1z = Std.isCPlusPlus1z(); 1566 Opts.Digraphs = Std.hasDigraphs(); 1567 Opts.GNUMode = Std.isGNUMode(); 1568 Opts.GNUInline = Std.isC89(); 1569 Opts.HexFloats = Std.hasHexFloats(); 1570 Opts.ImplicitInt = Std.hasImplicitInt(); 1571 1572 // Set OpenCL Version. 1573 Opts.OpenCL = isOpenCL(LangStd) || IK == IK_OpenCL; 1574 if (LangStd == LangStandard::lang_opencl) 1575 Opts.OpenCLVersion = 100; 1576 else if (LangStd == LangStandard::lang_opencl11) 1577 Opts.OpenCLVersion = 110; 1578 else if (LangStd == LangStandard::lang_opencl12) 1579 Opts.OpenCLVersion = 120; 1580 else if (LangStd == LangStandard::lang_opencl20) 1581 Opts.OpenCLVersion = 200; 1582 1583 // OpenCL has some additional defaults. 1584 if (Opts.OpenCL) { 1585 Opts.AltiVec = 0; 1586 Opts.ZVector = 0; 1587 Opts.CXXOperatorNames = 1; 1588 Opts.LaxVectorConversions = 0; 1589 Opts.DefaultFPContract = 1; 1590 Opts.NativeHalfType = 1; 1591 Opts.NativeHalfArgsAndReturns = 1; 1592 // Include default header file for OpenCL. 1593 if (Opts.IncludeDefaultHeader) { 1594 PPOpts.Includes.push_back("opencl-c.h"); 1595 } 1596 } 1597 1598 Opts.CUDA = IK == IK_CUDA || IK == IK_PreprocessedCuda || 1599 LangStd == LangStandard::lang_cuda; 1600 1601 Opts.RenderScript = IK == IK_RenderScript; 1602 if (Opts.RenderScript) { 1603 Opts.NativeHalfType = 1; 1604 Opts.NativeHalfArgsAndReturns = 1; 1605 } 1606 1607 // OpenCL and C++ both have bool, true, false keywords. 1608 Opts.Bool = Opts.OpenCL || Opts.CPlusPlus; 1609 1610 // OpenCL has half keyword 1611 Opts.Half = Opts.OpenCL; 1612 1613 // C++ has wchar_t keyword. 1614 Opts.WChar = Opts.CPlusPlus; 1615 1616 Opts.GNUKeywords = Opts.GNUMode; 1617 Opts.CXXOperatorNames = Opts.CPlusPlus; 1618 1619 Opts.DollarIdents = !Opts.AsmPreprocessor; 1620 } 1621 1622 /// Attempt to parse a visibility value out of the given argument. 1623 static Visibility parseVisibility(Arg *arg, ArgList &args, 1624 DiagnosticsEngine &diags) { 1625 StringRef value = arg->getValue(); 1626 if (value == "default") { 1627 return DefaultVisibility; 1628 } else if (value == "hidden" || value == "internal") { 1629 return HiddenVisibility; 1630 } else if (value == "protected") { 1631 // FIXME: diagnose if target does not support protected visibility 1632 return ProtectedVisibility; 1633 } 1634 1635 diags.Report(diag::err_drv_invalid_value) 1636 << arg->getAsString(args) << value; 1637 return DefaultVisibility; 1638 } 1639 1640 static void ParseLangArgs(LangOptions &Opts, ArgList &Args, InputKind IK, 1641 const TargetOptions &TargetOpts, 1642 PreprocessorOptions &PPOpts, 1643 DiagnosticsEngine &Diags) { 1644 // FIXME: Cleanup per-file based stuff. 1645 LangStandard::Kind LangStd = LangStandard::lang_unspecified; 1646 if (const Arg *A = Args.getLastArg(OPT_std_EQ)) { 1647 LangStd = llvm::StringSwitch<LangStandard::Kind>(A->getValue()) 1648 #define LANGSTANDARD(id, name, desc, features) \ 1649 .Case(name, LangStandard::lang_##id) 1650 #define LANGSTANDARD_ALIAS(id, alias) \ 1651 .Case(alias, LangStandard::lang_##id) 1652 #include "clang/Frontend/LangStandards.def" 1653 .Default(LangStandard::lang_unspecified); 1654 if (LangStd == LangStandard::lang_unspecified) 1655 Diags.Report(diag::err_drv_invalid_value) 1656 << A->getAsString(Args) << A->getValue(); 1657 else { 1658 // Valid standard, check to make sure language and standard are 1659 // compatible. 1660 const LangStandard &Std = LangStandard::getLangStandardForKind(LangStd); 1661 switch (IK) { 1662 case IK_C: 1663 case IK_ObjC: 1664 case IK_PreprocessedC: 1665 case IK_PreprocessedObjC: 1666 if (!(Std.isC89() || Std.isC99())) 1667 Diags.Report(diag::err_drv_argument_not_allowed_with) 1668 << A->getAsString(Args) << "C/ObjC"; 1669 break; 1670 case IK_CXX: 1671 case IK_ObjCXX: 1672 case IK_PreprocessedCXX: 1673 case IK_PreprocessedObjCXX: 1674 if (!Std.isCPlusPlus()) 1675 Diags.Report(diag::err_drv_argument_not_allowed_with) 1676 << A->getAsString(Args) << "C++/ObjC++"; 1677 break; 1678 case IK_OpenCL: 1679 if (!isOpenCL(LangStd)) 1680 Diags.Report(diag::err_drv_argument_not_allowed_with) 1681 << A->getAsString(Args) << "OpenCL"; 1682 break; 1683 case IK_CUDA: 1684 case IK_PreprocessedCuda: 1685 if (!Std.isCPlusPlus()) 1686 Diags.Report(diag::err_drv_argument_not_allowed_with) 1687 << A->getAsString(Args) << "CUDA"; 1688 break; 1689 default: 1690 break; 1691 } 1692 } 1693 } 1694 1695 // -cl-std only applies for OpenCL language standards. 1696 // Override the -std option in this case. 1697 if (const Arg *A = Args.getLastArg(OPT_cl_std_EQ)) { 1698 LangStandard::Kind OpenCLLangStd 1699 = llvm::StringSwitch<LangStandard::Kind>(A->getValue()) 1700 .Cases("cl", "CL", LangStandard::lang_opencl) 1701 .Cases("cl1.1", "CL1.1", LangStandard::lang_opencl11) 1702 .Cases("cl1.2", "CL1.2", LangStandard::lang_opencl12) 1703 .Cases("cl2.0", "CL2.0", LangStandard::lang_opencl20) 1704 .Default(LangStandard::lang_unspecified); 1705 1706 if (OpenCLLangStd == LangStandard::lang_unspecified) { 1707 Diags.Report(diag::err_drv_invalid_value) 1708 << A->getAsString(Args) << A->getValue(); 1709 } 1710 else 1711 LangStd = OpenCLLangStd; 1712 } 1713 1714 Opts.IncludeDefaultHeader = Args.hasArg(OPT_finclude_default_header); 1715 1716 llvm::Triple T(TargetOpts.Triple); 1717 CompilerInvocation::setLangDefaults(Opts, IK, T, PPOpts, LangStd); 1718 1719 // -cl-strict-aliasing needs to emit diagnostic in the case where CL > 1.0. 1720 // This option should be deprecated for CL > 1.0 because 1721 // this option was added for compatibility with OpenCL 1.0. 1722 if (Args.getLastArg(OPT_cl_strict_aliasing) 1723 && Opts.OpenCLVersion > 100) { 1724 std::string VerSpec = llvm::to_string(Opts.OpenCLVersion / 100) + 1725 std::string(".") + 1726 llvm::to_string((Opts.OpenCLVersion % 100) / 10); 1727 Diags.Report(diag::warn_option_invalid_ocl_version) 1728 << VerSpec << Args.getLastArg(OPT_cl_strict_aliasing)->getAsString(Args); 1729 } 1730 1731 // We abuse '-f[no-]gnu-keywords' to force overriding all GNU-extension 1732 // keywords. This behavior is provided by GCC's poorly named '-fasm' flag, 1733 // while a subset (the non-C++ GNU keywords) is provided by GCC's 1734 // '-fgnu-keywords'. Clang conflates the two for simplicity under the single 1735 // name, as it doesn't seem a useful distinction. 1736 Opts.GNUKeywords = Args.hasFlag(OPT_fgnu_keywords, OPT_fno_gnu_keywords, 1737 Opts.GNUKeywords); 1738 1739 if (Args.hasArg(OPT_fno_operator_names)) 1740 Opts.CXXOperatorNames = 0; 1741 1742 if (Args.hasArg(OPT_fcuda_is_device)) 1743 Opts.CUDAIsDevice = 1; 1744 1745 if (Args.hasArg(OPT_fcuda_allow_variadic_functions)) 1746 Opts.CUDAAllowVariadicFunctions = 1; 1747 1748 if (Args.hasArg(OPT_fno_cuda_host_device_constexpr)) 1749 Opts.CUDAHostDeviceConstexpr = 0; 1750 1751 if (Opts.CUDAIsDevice && Args.hasArg(OPT_fcuda_flush_denormals_to_zero)) 1752 Opts.CUDADeviceFlushDenormalsToZero = 1; 1753 1754 if (Opts.CUDAIsDevice && Args.hasArg(OPT_fcuda_approx_transcendentals)) 1755 Opts.CUDADeviceApproxTranscendentals = 1; 1756 1757 if (Opts.ObjC1) { 1758 if (Arg *arg = Args.getLastArg(OPT_fobjc_runtime_EQ)) { 1759 StringRef value = arg->getValue(); 1760 if (Opts.ObjCRuntime.tryParse(value)) 1761 Diags.Report(diag::err_drv_unknown_objc_runtime) << value; 1762 } 1763 1764 if (Args.hasArg(OPT_fobjc_gc_only)) 1765 Opts.setGC(LangOptions::GCOnly); 1766 else if (Args.hasArg(OPT_fobjc_gc)) 1767 Opts.setGC(LangOptions::HybridGC); 1768 else if (Args.hasArg(OPT_fobjc_arc)) { 1769 Opts.ObjCAutoRefCount = 1; 1770 if (!Opts.ObjCRuntime.allowsARC()) 1771 Diags.Report(diag::err_arc_unsupported_on_runtime); 1772 } 1773 1774 // ObjCWeakRuntime tracks whether the runtime supports __weak, not 1775 // whether the feature is actually enabled. This is predominantly 1776 // determined by -fobjc-runtime, but we allow it to be overridden 1777 // from the command line for testing purposes. 1778 if (Args.hasArg(OPT_fobjc_runtime_has_weak)) 1779 Opts.ObjCWeakRuntime = 1; 1780 else 1781 Opts.ObjCWeakRuntime = Opts.ObjCRuntime.allowsWeak(); 1782 1783 // ObjCWeak determines whether __weak is actually enabled. 1784 // Note that we allow -fno-objc-weak to disable this even in ARC mode. 1785 if (auto weakArg = Args.getLastArg(OPT_fobjc_weak, OPT_fno_objc_weak)) { 1786 if (!weakArg->getOption().matches(OPT_fobjc_weak)) { 1787 assert(!Opts.ObjCWeak); 1788 } else if (Opts.getGC() != LangOptions::NonGC) { 1789 Diags.Report(diag::err_objc_weak_with_gc); 1790 } else if (!Opts.ObjCWeakRuntime) { 1791 Diags.Report(diag::err_objc_weak_unsupported); 1792 } else { 1793 Opts.ObjCWeak = 1; 1794 } 1795 } else if (Opts.ObjCAutoRefCount) { 1796 Opts.ObjCWeak = Opts.ObjCWeakRuntime; 1797 } 1798 1799 if (Args.hasArg(OPT_fno_objc_infer_related_result_type)) 1800 Opts.ObjCInferRelatedResultType = 0; 1801 1802 if (Args.hasArg(OPT_fobjc_subscripting_legacy_runtime)) 1803 Opts.ObjCSubscriptingLegacyRuntime = 1804 (Opts.ObjCRuntime.getKind() == ObjCRuntime::FragileMacOSX); 1805 } 1806 1807 if (Args.hasArg(OPT_fgnu89_inline)) { 1808 if (Opts.CPlusPlus) 1809 Diags.Report(diag::err_drv_argument_not_allowed_with) << "-fgnu89-inline" 1810 << "C++/ObjC++"; 1811 else 1812 Opts.GNUInline = 1; 1813 } 1814 1815 if (Args.hasArg(OPT_fapple_kext)) { 1816 if (!Opts.CPlusPlus) 1817 Diags.Report(diag::warn_c_kext); 1818 else 1819 Opts.AppleKext = 1; 1820 } 1821 1822 if (Args.hasArg(OPT_print_ivar_layout)) 1823 Opts.ObjCGCBitmapPrint = 1; 1824 if (Args.hasArg(OPT_fno_constant_cfstrings)) 1825 Opts.NoConstantCFStrings = 1; 1826 1827 if (Args.hasArg(OPT_faltivec)) 1828 Opts.AltiVec = 1; 1829 1830 if (Args.hasArg(OPT_fzvector)) 1831 Opts.ZVector = 1; 1832 1833 if (Args.hasArg(OPT_pthread)) 1834 Opts.POSIXThreads = 1; 1835 1836 // The value-visibility mode defaults to "default". 1837 if (Arg *visOpt = Args.getLastArg(OPT_fvisibility)) { 1838 Opts.setValueVisibilityMode(parseVisibility(visOpt, Args, Diags)); 1839 } else { 1840 Opts.setValueVisibilityMode(DefaultVisibility); 1841 } 1842 1843 // The type-visibility mode defaults to the value-visibility mode. 1844 if (Arg *typeVisOpt = Args.getLastArg(OPT_ftype_visibility)) { 1845 Opts.setTypeVisibilityMode(parseVisibility(typeVisOpt, Args, Diags)); 1846 } else { 1847 Opts.setTypeVisibilityMode(Opts.getValueVisibilityMode()); 1848 } 1849 1850 if (Args.hasArg(OPT_fvisibility_inlines_hidden)) 1851 Opts.InlineVisibilityHidden = 1; 1852 1853 if (Args.hasArg(OPT_ftrapv)) { 1854 Opts.setSignedOverflowBehavior(LangOptions::SOB_Trapping); 1855 // Set the handler, if one is specified. 1856 Opts.OverflowHandler = 1857 Args.getLastArgValue(OPT_ftrapv_handler); 1858 } 1859 else if (Args.hasArg(OPT_fwrapv)) 1860 Opts.setSignedOverflowBehavior(LangOptions::SOB_Defined); 1861 1862 Opts.MSVCCompat = Args.hasArg(OPT_fms_compatibility); 1863 Opts.MicrosoftExt = Opts.MSVCCompat || Args.hasArg(OPT_fms_extensions); 1864 Opts.AsmBlocks = Args.hasArg(OPT_fasm_blocks) || Opts.MicrosoftExt; 1865 Opts.MSCompatibilityVersion = 0; 1866 if (const Arg *A = Args.getLastArg(OPT_fms_compatibility_version)) { 1867 VersionTuple VT; 1868 if (VT.tryParse(A->getValue())) 1869 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) 1870 << A->getValue(); 1871 Opts.MSCompatibilityVersion = VT.getMajor() * 10000000 + 1872 VT.getMinor().getValueOr(0) * 100000 + 1873 VT.getSubminor().getValueOr(0); 1874 } 1875 1876 // Mimicing gcc's behavior, trigraphs are only enabled if -trigraphs 1877 // is specified, or -std is set to a conforming mode. 1878 // Trigraphs are disabled by default in c++1z onwards. 1879 Opts.Trigraphs = !Opts.GNUMode && !Opts.MSVCCompat && !Opts.CPlusPlus1z; 1880 Opts.Trigraphs = 1881 Args.hasFlag(OPT_ftrigraphs, OPT_fno_trigraphs, Opts.Trigraphs); 1882 1883 Opts.DollarIdents = Args.hasFlag(OPT_fdollars_in_identifiers, 1884 OPT_fno_dollars_in_identifiers, 1885 Opts.DollarIdents); 1886 Opts.PascalStrings = Args.hasArg(OPT_fpascal_strings); 1887 Opts.VtorDispMode = getLastArgIntValue(Args, OPT_vtordisp_mode_EQ, 1, Diags); 1888 Opts.Borland = Args.hasArg(OPT_fborland_extensions); 1889 Opts.WritableStrings = Args.hasArg(OPT_fwritable_strings); 1890 Opts.ConstStrings = Args.hasFlag(OPT_fconst_strings, OPT_fno_const_strings, 1891 Opts.ConstStrings); 1892 if (Args.hasArg(OPT_fno_lax_vector_conversions)) 1893 Opts.LaxVectorConversions = 0; 1894 if (Args.hasArg(OPT_fno_threadsafe_statics)) 1895 Opts.ThreadsafeStatics = 0; 1896 Opts.Exceptions = Args.hasArg(OPT_fexceptions); 1897 Opts.ObjCExceptions = Args.hasArg(OPT_fobjc_exceptions); 1898 Opts.CXXExceptions = Args.hasArg(OPT_fcxx_exceptions); 1899 Opts.SjLjExceptions = Args.hasArg(OPT_fsjlj_exceptions); 1900 Opts.ExternCNoUnwind = Args.hasArg(OPT_fexternc_nounwind); 1901 Opts.TraditionalCPP = Args.hasArg(OPT_traditional_cpp); 1902 1903 Opts.RTTI = Opts.CPlusPlus && !Args.hasArg(OPT_fno_rtti); 1904 Opts.RTTIData = Opts.RTTI && !Args.hasArg(OPT_fno_rtti_data); 1905 Opts.Blocks = Args.hasArg(OPT_fblocks) || (Opts.OpenCL 1906 && Opts.OpenCLVersion >= 200); 1907 Opts.BlocksRuntimeOptional = Args.hasArg(OPT_fblocks_runtime_optional); 1908 Opts.Coroutines = Args.hasArg(OPT_fcoroutines); 1909 Opts.ModulesTS = Args.hasArg(OPT_fmodules_ts); 1910 Opts.Modules = Args.hasArg(OPT_fmodules) || Opts.ModulesTS; 1911 Opts.ModulesStrictDeclUse = Args.hasArg(OPT_fmodules_strict_decluse); 1912 Opts.ModulesDeclUse = 1913 Args.hasArg(OPT_fmodules_decluse) || Opts.ModulesStrictDeclUse; 1914 Opts.ModulesLocalVisibility = 1915 Args.hasArg(OPT_fmodules_local_submodule_visibility) || Opts.ModulesTS; 1916 Opts.ModulesSearchAll = Opts.Modules && 1917 !Args.hasArg(OPT_fno_modules_search_all) && 1918 Args.hasArg(OPT_fmodules_search_all); 1919 Opts.ModulesErrorRecovery = !Args.hasArg(OPT_fno_modules_error_recovery); 1920 Opts.ImplicitModules = !Args.hasArg(OPT_fno_implicit_modules); 1921 Opts.CharIsSigned = Opts.OpenCL || !Args.hasArg(OPT_fno_signed_char); 1922 Opts.WChar = Opts.CPlusPlus && !Args.hasArg(OPT_fno_wchar); 1923 Opts.ShortWChar = Args.hasFlag(OPT_fshort_wchar, OPT_fno_short_wchar, false); 1924 Opts.ShortEnums = Args.hasArg(OPT_fshort_enums); 1925 Opts.Freestanding = Args.hasArg(OPT_ffreestanding); 1926 Opts.NoBuiltin = Args.hasArg(OPT_fno_builtin) || Opts.Freestanding; 1927 if (!Opts.NoBuiltin) 1928 getAllNoBuiltinFuncValues(Args, Opts.NoBuiltinFuncs); 1929 Opts.NoMathBuiltin = Args.hasArg(OPT_fno_math_builtin); 1930 Opts.SizedDeallocation = Args.hasArg(OPT_fsized_deallocation); 1931 Opts.ConceptsTS = Args.hasArg(OPT_fconcepts_ts); 1932 Opts.HeinousExtensions = Args.hasArg(OPT_fheinous_gnu_extensions); 1933 Opts.AccessControl = !Args.hasArg(OPT_fno_access_control); 1934 Opts.ElideConstructors = !Args.hasArg(OPT_fno_elide_constructors); 1935 Opts.MathErrno = !Opts.OpenCL && Args.hasArg(OPT_fmath_errno); 1936 Opts.InstantiationDepth = 1937 getLastArgIntValue(Args, OPT_ftemplate_depth, 1024, Diags); 1938 Opts.ArrowDepth = 1939 getLastArgIntValue(Args, OPT_foperator_arrow_depth, 256, Diags); 1940 Opts.ConstexprCallDepth = 1941 getLastArgIntValue(Args, OPT_fconstexpr_depth, 512, Diags); 1942 Opts.ConstexprStepLimit = 1943 getLastArgIntValue(Args, OPT_fconstexpr_steps, 1048576, Diags); 1944 Opts.BracketDepth = getLastArgIntValue(Args, OPT_fbracket_depth, 256, Diags); 1945 Opts.DelayedTemplateParsing = Args.hasArg(OPT_fdelayed_template_parsing); 1946 Opts.NumLargeByValueCopy = 1947 getLastArgIntValue(Args, OPT_Wlarge_by_value_copy_EQ, 0, Diags); 1948 Opts.MSBitfields = Args.hasArg(OPT_mms_bitfields); 1949 Opts.ObjCConstantStringClass = 1950 Args.getLastArgValue(OPT_fconstant_string_class); 1951 Opts.ObjCDefaultSynthProperties = 1952 !Args.hasArg(OPT_disable_objc_default_synthesize_properties); 1953 Opts.EncodeExtendedBlockSig = 1954 Args.hasArg(OPT_fencode_extended_block_signature); 1955 Opts.EmitAllDecls = Args.hasArg(OPT_femit_all_decls); 1956 Opts.PackStruct = getLastArgIntValue(Args, OPT_fpack_struct_EQ, 0, Diags); 1957 Opts.MaxTypeAlign = getLastArgIntValue(Args, OPT_fmax_type_align_EQ, 0, Diags); 1958 Opts.AlignDouble = Args.hasArg(OPT_malign_double); 1959 Opts.PICLevel = getLastArgIntValue(Args, OPT_pic_level, 0, Diags); 1960 Opts.PIE = Args.hasArg(OPT_pic_is_pie); 1961 Opts.Static = Args.hasArg(OPT_static_define); 1962 Opts.DumpRecordLayoutsSimple = Args.hasArg(OPT_fdump_record_layouts_simple); 1963 Opts.DumpRecordLayouts = Opts.DumpRecordLayoutsSimple 1964 || Args.hasArg(OPT_fdump_record_layouts); 1965 Opts.DumpVTableLayouts = Args.hasArg(OPT_fdump_vtable_layouts); 1966 Opts.SpellChecking = !Args.hasArg(OPT_fno_spell_checking); 1967 Opts.NoBitFieldTypeAlign = Args.hasArg(OPT_fno_bitfield_type_align); 1968 Opts.SinglePrecisionConstants = Args.hasArg(OPT_cl_single_precision_constant); 1969 Opts.FastRelaxedMath = Args.hasArg(OPT_cl_fast_relaxed_math); 1970 Opts.HexagonQdsp6Compat = Args.hasArg(OPT_mqdsp6_compat); 1971 Opts.FakeAddressSpaceMap = Args.hasArg(OPT_ffake_address_space_map); 1972 Opts.ParseUnknownAnytype = Args.hasArg(OPT_funknown_anytype); 1973 Opts.DebuggerSupport = Args.hasArg(OPT_fdebugger_support); 1974 Opts.DebuggerCastResultToId = Args.hasArg(OPT_fdebugger_cast_result_to_id); 1975 Opts.DebuggerObjCLiteral = Args.hasArg(OPT_fdebugger_objc_literal); 1976 Opts.ApplePragmaPack = Args.hasArg(OPT_fapple_pragma_pack); 1977 Opts.CurrentModule = Args.getLastArgValue(OPT_fmodule_name_EQ); 1978 Opts.AppExt = Args.hasArg(OPT_fapplication_extension); 1979 Opts.ModuleFeatures = Args.getAllArgValues(OPT_fmodule_feature); 1980 std::sort(Opts.ModuleFeatures.begin(), Opts.ModuleFeatures.end()); 1981 Opts.NativeHalfType |= Args.hasArg(OPT_fnative_half_type); 1982 Opts.NativeHalfArgsAndReturns |= Args.hasArg(OPT_fnative_half_arguments_and_returns); 1983 // Enable HalfArgsAndReturns if present in Args or if NativeHalfArgsAndReturns 1984 // is enabled. 1985 Opts.HalfArgsAndReturns = Args.hasArg(OPT_fallow_half_arguments_and_returns) 1986 | Opts.NativeHalfArgsAndReturns; 1987 Opts.GNUAsm = !Args.hasArg(OPT_fno_gnu_inline_asm); 1988 1989 // __declspec is enabled by default for the PS4 by the driver, and also 1990 // enabled for Microsoft Extensions or Borland Extensions, here. 1991 // 1992 // FIXME: __declspec is also currently enabled for CUDA, but isn't really a 1993 // CUDA extension, however it is required for supporting cuda_builtin_vars.h, 1994 // which uses __declspec(property). Once that has been rewritten in terms of 1995 // something more generic, remove the Opts.CUDA term here. 1996 Opts.DeclSpecKeyword = 1997 Args.hasFlag(OPT_fdeclspec, OPT_fno_declspec, 1998 (Opts.MicrosoftExt || Opts.Borland || Opts.CUDA)); 1999 2000 // For now, we only support local submodule visibility in C++ (because we 2001 // heavily depend on the ODR for merging redefinitions). 2002 if (Opts.ModulesLocalVisibility && !Opts.CPlusPlus) 2003 Diags.Report(diag::err_drv_argument_not_allowed_with) 2004 << "-fmodules-local-submodule-visibility" << "C"; 2005 2006 if (Arg *A = Args.getLastArg(OPT_faddress_space_map_mangling_EQ)) { 2007 switch (llvm::StringSwitch<unsigned>(A->getValue()) 2008 .Case("target", LangOptions::ASMM_Target) 2009 .Case("no", LangOptions::ASMM_Off) 2010 .Case("yes", LangOptions::ASMM_On) 2011 .Default(255)) { 2012 default: 2013 Diags.Report(diag::err_drv_invalid_value) 2014 << "-faddress-space-map-mangling=" << A->getValue(); 2015 break; 2016 case LangOptions::ASMM_Target: 2017 Opts.setAddressSpaceMapMangling(LangOptions::ASMM_Target); 2018 break; 2019 case LangOptions::ASMM_On: 2020 Opts.setAddressSpaceMapMangling(LangOptions::ASMM_On); 2021 break; 2022 case LangOptions::ASMM_Off: 2023 Opts.setAddressSpaceMapMangling(LangOptions::ASMM_Off); 2024 break; 2025 } 2026 } 2027 2028 if (Arg *A = Args.getLastArg(OPT_fms_memptr_rep_EQ)) { 2029 LangOptions::PragmaMSPointersToMembersKind InheritanceModel = 2030 llvm::StringSwitch<LangOptions::PragmaMSPointersToMembersKind>( 2031 A->getValue()) 2032 .Case("single", 2033 LangOptions::PPTMK_FullGeneralitySingleInheritance) 2034 .Case("multiple", 2035 LangOptions::PPTMK_FullGeneralityMultipleInheritance) 2036 .Case("virtual", 2037 LangOptions::PPTMK_FullGeneralityVirtualInheritance) 2038 .Default(LangOptions::PPTMK_BestCase); 2039 if (InheritanceModel == LangOptions::PPTMK_BestCase) 2040 Diags.Report(diag::err_drv_invalid_value) 2041 << "-fms-memptr-rep=" << A->getValue(); 2042 2043 Opts.setMSPointerToMemberRepresentationMethod(InheritanceModel); 2044 } 2045 2046 // Check for MS default calling conventions being specified. 2047 if (Arg *A = Args.getLastArg(OPT_fdefault_calling_conv_EQ)) { 2048 LangOptions::DefaultCallingConvention DefaultCC = 2049 llvm::StringSwitch<LangOptions::DefaultCallingConvention>( 2050 A->getValue()) 2051 .Case("cdecl", LangOptions::DCC_CDecl) 2052 .Case("fastcall", LangOptions::DCC_FastCall) 2053 .Case("stdcall", LangOptions::DCC_StdCall) 2054 .Case("vectorcall", LangOptions::DCC_VectorCall) 2055 .Default(LangOptions::DCC_None); 2056 if (DefaultCC == LangOptions::DCC_None) 2057 Diags.Report(diag::err_drv_invalid_value) 2058 << "-fdefault-calling-conv=" << A->getValue(); 2059 2060 llvm::Triple T(TargetOpts.Triple); 2061 llvm::Triple::ArchType Arch = T.getArch(); 2062 bool emitError = (DefaultCC == LangOptions::DCC_FastCall || 2063 DefaultCC == LangOptions::DCC_StdCall) && 2064 Arch != llvm::Triple::x86; 2065 emitError |= DefaultCC == LangOptions::DCC_VectorCall && 2066 !(Arch == llvm::Triple::x86 || Arch == llvm::Triple::x86_64); 2067 if (emitError) 2068 Diags.Report(diag::err_drv_argument_not_allowed_with) 2069 << A->getSpelling() << T.getTriple(); 2070 else 2071 Opts.setDefaultCallingConv(DefaultCC); 2072 } 2073 2074 // -mrtd option 2075 if (Arg *A = Args.getLastArg(OPT_mrtd)) { 2076 if (Opts.getDefaultCallingConv() != LangOptions::DCC_None) 2077 Diags.Report(diag::err_drv_argument_not_allowed_with) 2078 << A->getSpelling() << "-fdefault-calling-conv"; 2079 else { 2080 llvm::Triple T(TargetOpts.Triple); 2081 if (T.getArch() != llvm::Triple::x86) 2082 Diags.Report(diag::err_drv_argument_not_allowed_with) 2083 << A->getSpelling() << T.getTriple(); 2084 else 2085 Opts.setDefaultCallingConv(LangOptions::DCC_StdCall); 2086 } 2087 } 2088 2089 // Check if -fopenmp is specified. 2090 Opts.OpenMP = Args.hasArg(options::OPT_fopenmp) ? 1 : 0; 2091 Opts.OpenMPUseTLS = 2092 Opts.OpenMP && !Args.hasArg(options::OPT_fnoopenmp_use_tls); 2093 Opts.OpenMPIsDevice = 2094 Opts.OpenMP && Args.hasArg(options::OPT_fopenmp_is_device); 2095 2096 if (Opts.OpenMP) { 2097 int Version = 2098 getLastArgIntValue(Args, OPT_fopenmp_version_EQ, Opts.OpenMP, Diags); 2099 if (Version != 0) 2100 Opts.OpenMP = Version; 2101 // Provide diagnostic when a given target is not expected to be an OpenMP 2102 // device or host. 2103 if (!Opts.OpenMPIsDevice) { 2104 switch (T.getArch()) { 2105 default: 2106 break; 2107 // Add unsupported host targets here: 2108 case llvm::Triple::nvptx: 2109 case llvm::Triple::nvptx64: 2110 Diags.Report(clang::diag::err_drv_omp_host_target_not_supported) 2111 << TargetOpts.Triple; 2112 break; 2113 } 2114 } 2115 } 2116 2117 // Get the OpenMP target triples if any. 2118 if (Arg *A = Args.getLastArg(options::OPT_fopenmp_targets_EQ)) { 2119 2120 for (unsigned i = 0; i < A->getNumValues(); ++i) { 2121 llvm::Triple TT(A->getValue(i)); 2122 2123 if (TT.getArch() == llvm::Triple::UnknownArch) 2124 Diags.Report(clang::diag::err_drv_invalid_omp_target) << A->getValue(i); 2125 else 2126 Opts.OMPTargetTriples.push_back(TT); 2127 } 2128 } 2129 2130 // Get OpenMP host file path if any and report if a non existent file is 2131 // found 2132 if (Arg *A = Args.getLastArg(options::OPT_fopenmp_host_ir_file_path)) { 2133 Opts.OMPHostIRFile = A->getValue(); 2134 if (!llvm::sys::fs::exists(Opts.OMPHostIRFile)) 2135 Diags.Report(clang::diag::err_drv_omp_host_ir_file_not_found) 2136 << Opts.OMPHostIRFile; 2137 } 2138 2139 // Record whether the __DEPRECATED define was requested. 2140 Opts.Deprecated = Args.hasFlag(OPT_fdeprecated_macro, 2141 OPT_fno_deprecated_macro, 2142 Opts.Deprecated); 2143 2144 // FIXME: Eliminate this dependency. 2145 unsigned Opt = getOptimizationLevel(Args, IK, Diags), 2146 OptSize = getOptimizationLevelSize(Args); 2147 Opts.Optimize = Opt != 0; 2148 Opts.OptimizeSize = OptSize != 0; 2149 2150 // This is the __NO_INLINE__ define, which just depends on things like the 2151 // optimization level and -fno-inline, not actually whether the backend has 2152 // inlining enabled. 2153 Opts.NoInlineDefine = !Opt || Args.hasArg(OPT_fno_inline); 2154 2155 Opts.FastMath = Args.hasArg(OPT_ffast_math) || 2156 Args.hasArg(OPT_cl_fast_relaxed_math); 2157 Opts.FiniteMathOnly = Args.hasArg(OPT_ffinite_math_only) || 2158 Args.hasArg(OPT_cl_finite_math_only) || 2159 Args.hasArg(OPT_cl_fast_relaxed_math); 2160 Opts.UnsafeFPMath = Args.hasArg(OPT_menable_unsafe_fp_math) || 2161 Args.hasArg(OPT_cl_unsafe_math_optimizations) || 2162 Args.hasArg(OPT_cl_fast_relaxed_math); 2163 2164 Opts.RetainCommentsFromSystemHeaders = 2165 Args.hasArg(OPT_fretain_comments_from_system_headers); 2166 2167 unsigned SSP = getLastArgIntValue(Args, OPT_stack_protector, 0, Diags); 2168 switch (SSP) { 2169 default: 2170 Diags.Report(diag::err_drv_invalid_value) 2171 << Args.getLastArg(OPT_stack_protector)->getAsString(Args) << SSP; 2172 break; 2173 case 0: Opts.setStackProtector(LangOptions::SSPOff); break; 2174 case 1: Opts.setStackProtector(LangOptions::SSPOn); break; 2175 case 2: Opts.setStackProtector(LangOptions::SSPStrong); break; 2176 case 3: Opts.setStackProtector(LangOptions::SSPReq); break; 2177 } 2178 2179 // Parse -fsanitize= arguments. 2180 parseSanitizerKinds("-fsanitize=", Args.getAllArgValues(OPT_fsanitize_EQ), 2181 Diags, Opts.Sanitize); 2182 // -fsanitize-address-field-padding=N has to be a LangOpt, parse it here. 2183 Opts.SanitizeAddressFieldPadding = 2184 getLastArgIntValue(Args, OPT_fsanitize_address_field_padding, 0, Diags); 2185 Opts.SanitizerBlacklistFiles = Args.getAllArgValues(OPT_fsanitize_blacklist); 2186 } 2187 2188 static void ParsePreprocessorArgs(PreprocessorOptions &Opts, ArgList &Args, 2189 FileManager &FileMgr, 2190 DiagnosticsEngine &Diags) { 2191 using namespace options; 2192 Opts.ImplicitPCHInclude = Args.getLastArgValue(OPT_include_pch); 2193 Opts.ImplicitPTHInclude = Args.getLastArgValue(OPT_include_pth); 2194 if (const Arg *A = Args.getLastArg(OPT_token_cache)) 2195 Opts.TokenCache = A->getValue(); 2196 else 2197 Opts.TokenCache = Opts.ImplicitPTHInclude; 2198 Opts.UsePredefines = !Args.hasArg(OPT_undef); 2199 Opts.DetailedRecord = Args.hasArg(OPT_detailed_preprocessing_record); 2200 Opts.DisablePCHValidation = Args.hasArg(OPT_fno_validate_pch); 2201 2202 Opts.DumpDeserializedPCHDecls = Args.hasArg(OPT_dump_deserialized_pch_decls); 2203 for (const Arg *A : Args.filtered(OPT_error_on_deserialized_pch_decl)) 2204 Opts.DeserializedPCHDeclsToErrorOn.insert(A->getValue()); 2205 2206 if (const Arg *A = Args.getLastArg(OPT_preamble_bytes_EQ)) { 2207 StringRef Value(A->getValue()); 2208 size_t Comma = Value.find(','); 2209 unsigned Bytes = 0; 2210 unsigned EndOfLine = 0; 2211 2212 if (Comma == StringRef::npos || 2213 Value.substr(0, Comma).getAsInteger(10, Bytes) || 2214 Value.substr(Comma + 1).getAsInteger(10, EndOfLine)) 2215 Diags.Report(diag::err_drv_preamble_format); 2216 else { 2217 Opts.PrecompiledPreambleBytes.first = Bytes; 2218 Opts.PrecompiledPreambleBytes.second = (EndOfLine != 0); 2219 } 2220 } 2221 2222 // Add macros from the command line. 2223 for (const Arg *A : Args.filtered(OPT_D, OPT_U)) { 2224 if (A->getOption().matches(OPT_D)) 2225 Opts.addMacroDef(A->getValue()); 2226 else 2227 Opts.addMacroUndef(A->getValue()); 2228 } 2229 2230 Opts.MacroIncludes = Args.getAllArgValues(OPT_imacros); 2231 2232 // Add the ordered list of -includes. 2233 for (const Arg *A : Args.filtered(OPT_include)) 2234 Opts.Includes.emplace_back(A->getValue()); 2235 2236 for (const Arg *A : Args.filtered(OPT_chain_include)) 2237 Opts.ChainedIncludes.emplace_back(A->getValue()); 2238 2239 for (const Arg *A : Args.filtered(OPT_remap_file)) { 2240 std::pair<StringRef, StringRef> Split = StringRef(A->getValue()).split(';'); 2241 2242 if (Split.second.empty()) { 2243 Diags.Report(diag::err_drv_invalid_remap_file) << A->getAsString(Args); 2244 continue; 2245 } 2246 2247 Opts.addRemappedFile(Split.first, Split.second); 2248 } 2249 2250 if (Arg *A = Args.getLastArg(OPT_fobjc_arc_cxxlib_EQ)) { 2251 StringRef Name = A->getValue(); 2252 unsigned Library = llvm::StringSwitch<unsigned>(Name) 2253 .Case("libc++", ARCXX_libcxx) 2254 .Case("libstdc++", ARCXX_libstdcxx) 2255 .Case("none", ARCXX_nolib) 2256 .Default(~0U); 2257 if (Library == ~0U) 2258 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Name; 2259 else 2260 Opts.ObjCXXARCStandardLibrary = (ObjCXXARCStandardLibraryKind)Library; 2261 } 2262 } 2263 2264 static void ParsePreprocessorOutputArgs(PreprocessorOutputOptions &Opts, 2265 ArgList &Args, 2266 frontend::ActionKind Action) { 2267 using namespace options; 2268 2269 switch (Action) { 2270 case frontend::ASTDeclList: 2271 case frontend::ASTDump: 2272 case frontend::ASTPrint: 2273 case frontend::ASTView: 2274 case frontend::EmitAssembly: 2275 case frontend::EmitBC: 2276 case frontend::EmitHTML: 2277 case frontend::EmitLLVM: 2278 case frontend::EmitLLVMOnly: 2279 case frontend::EmitCodeGenOnly: 2280 case frontend::EmitObj: 2281 case frontend::FixIt: 2282 case frontend::GenerateModule: 2283 case frontend::GenerateModuleInterface: 2284 case frontend::GeneratePCH: 2285 case frontend::GeneratePTH: 2286 case frontend::ParseSyntaxOnly: 2287 case frontend::ModuleFileInfo: 2288 case frontend::VerifyPCH: 2289 case frontend::PluginAction: 2290 case frontend::PrintDeclContext: 2291 case frontend::RewriteObjC: 2292 case frontend::RewriteTest: 2293 case frontend::RunAnalysis: 2294 case frontend::MigrateSource: 2295 Opts.ShowCPP = 0; 2296 break; 2297 2298 case frontend::DumpRawTokens: 2299 case frontend::DumpTokens: 2300 case frontend::InitOnly: 2301 case frontend::PrintPreamble: 2302 case frontend::PrintPreprocessedInput: 2303 case frontend::RewriteMacros: 2304 case frontend::RunPreprocessorOnly: 2305 Opts.ShowCPP = !Args.hasArg(OPT_dM); 2306 break; 2307 } 2308 2309 Opts.ShowComments = Args.hasArg(OPT_C); 2310 Opts.ShowLineMarkers = !Args.hasArg(OPT_P); 2311 Opts.ShowMacroComments = Args.hasArg(OPT_CC); 2312 Opts.ShowMacros = Args.hasArg(OPT_dM) || Args.hasArg(OPT_dD); 2313 Opts.RewriteIncludes = Args.hasArg(OPT_frewrite_includes); 2314 Opts.UseLineDirectives = Args.hasArg(OPT_fuse_line_directives); 2315 } 2316 2317 static void ParseTargetArgs(TargetOptions &Opts, ArgList &Args, 2318 DiagnosticsEngine &Diags) { 2319 using namespace options; 2320 Opts.ABI = Args.getLastArgValue(OPT_target_abi); 2321 if (Arg *A = Args.getLastArg(OPT_meabi)) { 2322 StringRef Value = A->getValue(); 2323 llvm::EABI EABIVersion = llvm::StringSwitch<llvm::EABI>(Value) 2324 .Case("default", llvm::EABI::Default) 2325 .Case("4", llvm::EABI::EABI4) 2326 .Case("5", llvm::EABI::EABI5) 2327 .Case("gnu", llvm::EABI::GNU) 2328 .Default(llvm::EABI::Unknown); 2329 if (EABIVersion == llvm::EABI::Unknown) 2330 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) 2331 << Value; 2332 else 2333 Opts.EABIVersion = Value; 2334 } 2335 Opts.CPU = Args.getLastArgValue(OPT_target_cpu); 2336 Opts.FPMath = Args.getLastArgValue(OPT_mfpmath); 2337 Opts.FeaturesAsWritten = Args.getAllArgValues(OPT_target_feature); 2338 Opts.LinkerVersion = Args.getLastArgValue(OPT_target_linker_version); 2339 Opts.Triple = llvm::Triple::normalize(Args.getLastArgValue(OPT_triple)); 2340 Opts.Reciprocals = Args.getAllArgValues(OPT_mrecip_EQ); 2341 // Use the default target triple if unspecified. 2342 if (Opts.Triple.empty()) 2343 Opts.Triple = llvm::sys::getDefaultTargetTriple(); 2344 } 2345 2346 bool CompilerInvocation::CreateFromArgs(CompilerInvocation &Res, 2347 const char *const *ArgBegin, 2348 const char *const *ArgEnd, 2349 DiagnosticsEngine &Diags) { 2350 bool Success = true; 2351 2352 // Parse the arguments. 2353 std::unique_ptr<OptTable> Opts(createDriverOptTable()); 2354 const unsigned IncludedFlagsBitmask = options::CC1Option; 2355 unsigned MissingArgIndex, MissingArgCount; 2356 InputArgList Args = 2357 Opts->ParseArgs(llvm::makeArrayRef(ArgBegin, ArgEnd), MissingArgIndex, 2358 MissingArgCount, IncludedFlagsBitmask); 2359 LangOptions &LangOpts = *Res.getLangOpts(); 2360 2361 // Check for missing argument error. 2362 if (MissingArgCount) { 2363 Diags.Report(diag::err_drv_missing_argument) 2364 << Args.getArgString(MissingArgIndex) << MissingArgCount; 2365 Success = false; 2366 } 2367 2368 // Issue errors on unknown arguments. 2369 for (const Arg *A : Args.filtered(OPT_UNKNOWN)) { 2370 Diags.Report(diag::err_drv_unknown_argument) << A->getAsString(Args); 2371 Success = false; 2372 } 2373 2374 Success &= ParseAnalyzerArgs(*Res.getAnalyzerOpts(), Args, Diags); 2375 Success &= ParseMigratorArgs(Res.getMigratorOpts(), Args); 2376 ParseDependencyOutputArgs(Res.getDependencyOutputOpts(), Args); 2377 Success &= ParseDiagnosticArgs(Res.getDiagnosticOpts(), Args, &Diags, 2378 false /*DefaultDiagColor*/); 2379 ParseCommentArgs(LangOpts.CommentOpts, Args); 2380 ParseFileSystemArgs(Res.getFileSystemOpts(), Args); 2381 // FIXME: We shouldn't have to pass the DashX option around here 2382 InputKind DashX = ParseFrontendArgs(Res.getFrontendOpts(), Args, Diags); 2383 ParseTargetArgs(Res.getTargetOpts(), Args, Diags); 2384 Success &= ParseCodeGenArgs(Res.getCodeGenOpts(), Args, DashX, Diags, 2385 Res.getTargetOpts()); 2386 ParseHeaderSearchArgs(Res.getHeaderSearchOpts(), Args); 2387 if (DashX == IK_AST || DashX == IK_LLVM_IR) { 2388 // ObjCAAutoRefCount and Sanitize LangOpts are used to setup the 2389 // PassManager in BackendUtil.cpp. They need to be initializd no matter 2390 // what the input type is. 2391 if (Args.hasArg(OPT_fobjc_arc)) 2392 LangOpts.ObjCAutoRefCount = 1; 2393 // PIClevel and PIELevel are needed during code generation and this should be 2394 // set regardless of the input type. 2395 LangOpts.PICLevel = getLastArgIntValue(Args, OPT_pic_level, 0, Diags); 2396 LangOpts.PIE = Args.hasArg(OPT_pic_is_pie); 2397 parseSanitizerKinds("-fsanitize=", Args.getAllArgValues(OPT_fsanitize_EQ), 2398 Diags, LangOpts.Sanitize); 2399 } else { 2400 // Other LangOpts are only initialzed when the input is not AST or LLVM IR. 2401 ParseLangArgs(LangOpts, Args, DashX, Res.getTargetOpts(), 2402 Res.getPreprocessorOpts(), Diags); 2403 if (Res.getFrontendOpts().ProgramAction == frontend::RewriteObjC) 2404 LangOpts.ObjCExceptions = 1; 2405 } 2406 2407 if (LangOpts.CUDA) { 2408 // During CUDA device-side compilation, the aux triple is the 2409 // triple used for host compilation. 2410 if (LangOpts.CUDAIsDevice) 2411 Res.getTargetOpts().HostTriple = Res.getFrontendOpts().AuxTriple; 2412 2413 // Set default FP_CONTRACT to FAST. 2414 if (!Args.hasArg(OPT_ffp_contract)) 2415 Res.getCodeGenOpts().setFPContractMode(CodeGenOptions::FPC_Fast); 2416 } 2417 2418 // FIXME: Override value name discarding when asan or msan is used because the 2419 // backend passes depend on the name of the alloca in order to print out 2420 // names. 2421 Res.getCodeGenOpts().DiscardValueNames &= 2422 !LangOpts.Sanitize.has(SanitizerKind::Address) && 2423 !LangOpts.Sanitize.has(SanitizerKind::Memory); 2424 2425 // FIXME: ParsePreprocessorArgs uses the FileManager to read the contents of 2426 // PCH file and find the original header name. Remove the need to do that in 2427 // ParsePreprocessorArgs and remove the FileManager 2428 // parameters from the function and the "FileManager.h" #include. 2429 FileManager FileMgr(Res.getFileSystemOpts()); 2430 ParsePreprocessorArgs(Res.getPreprocessorOpts(), Args, FileMgr, Diags); 2431 ParsePreprocessorOutputArgs(Res.getPreprocessorOutputOpts(), Args, 2432 Res.getFrontendOpts().ProgramAction); 2433 2434 // Turn on -Wspir-compat for SPIR target. 2435 llvm::Triple T(Res.getTargetOpts().Triple); 2436 auto Arch = T.getArch(); 2437 if (Arch == llvm::Triple::spir || Arch == llvm::Triple::spir64) { 2438 Res.getDiagnosticOpts().Warnings.push_back("spir-compat"); 2439 } 2440 return Success; 2441 } 2442 2443 std::string CompilerInvocation::getModuleHash() const { 2444 // Note: For QoI reasons, the things we use as a hash here should all be 2445 // dumped via the -module-info flag. 2446 using llvm::hash_code; 2447 using llvm::hash_value; 2448 using llvm::hash_combine; 2449 2450 // Start the signature with the compiler version. 2451 // FIXME: We'd rather use something more cryptographically sound than 2452 // CityHash, but this will do for now. 2453 hash_code code = hash_value(getClangFullRepositoryVersion()); 2454 2455 // Extend the signature with the language options 2456 #define LANGOPT(Name, Bits, Default, Description) \ 2457 code = hash_combine(code, LangOpts->Name); 2458 #define ENUM_LANGOPT(Name, Type, Bits, Default, Description) \ 2459 code = hash_combine(code, static_cast<unsigned>(LangOpts->get##Name())); 2460 #define BENIGN_LANGOPT(Name, Bits, Default, Description) 2461 #define BENIGN_ENUM_LANGOPT(Name, Type, Bits, Default, Description) 2462 #include "clang/Basic/LangOptions.def" 2463 2464 for (StringRef Feature : LangOpts->ModuleFeatures) 2465 code = hash_combine(code, Feature); 2466 2467 // Extend the signature with the target options. 2468 code = hash_combine(code, TargetOpts->Triple, TargetOpts->CPU, 2469 TargetOpts->ABI); 2470 for (unsigned i = 0, n = TargetOpts->FeaturesAsWritten.size(); i != n; ++i) 2471 code = hash_combine(code, TargetOpts->FeaturesAsWritten[i]); 2472 2473 // Extend the signature with preprocessor options. 2474 const PreprocessorOptions &ppOpts = getPreprocessorOpts(); 2475 const HeaderSearchOptions &hsOpts = getHeaderSearchOpts(); 2476 code = hash_combine(code, ppOpts.UsePredefines, ppOpts.DetailedRecord); 2477 2478 for (std::vector<std::pair<std::string, bool/*isUndef*/>>::const_iterator 2479 I = getPreprocessorOpts().Macros.begin(), 2480 IEnd = getPreprocessorOpts().Macros.end(); 2481 I != IEnd; ++I) { 2482 // If we're supposed to ignore this macro for the purposes of modules, 2483 // don't put it into the hash. 2484 if (!hsOpts.ModulesIgnoreMacros.empty()) { 2485 // Check whether we're ignoring this macro. 2486 StringRef MacroDef = I->first; 2487 if (hsOpts.ModulesIgnoreMacros.count(MacroDef.split('=').first)) 2488 continue; 2489 } 2490 2491 code = hash_combine(code, I->first, I->second); 2492 } 2493 2494 // Extend the signature with the sysroot and other header search options. 2495 code = hash_combine(code, hsOpts.Sysroot, 2496 hsOpts.ModuleFormat, 2497 hsOpts.UseDebugInfo, 2498 hsOpts.UseBuiltinIncludes, 2499 hsOpts.UseStandardSystemIncludes, 2500 hsOpts.UseStandardCXXIncludes, 2501 hsOpts.UseLibcxx, 2502 hsOpts.ModulesValidateDiagnosticOptions); 2503 code = hash_combine(code, hsOpts.ResourceDir); 2504 2505 // Extend the signature with the user build path. 2506 code = hash_combine(code, hsOpts.ModuleUserBuildPath); 2507 2508 // Extend the signature with the module file extensions. 2509 const FrontendOptions &frontendOpts = getFrontendOpts(); 2510 for (const auto &ext : frontendOpts.ModuleFileExtensions) { 2511 code = ext->hashExtension(code); 2512 } 2513 2514 // Darwin-specific hack: if we have a sysroot, use the contents and 2515 // modification time of 2516 // $sysroot/System/Library/CoreServices/SystemVersion.plist 2517 // as part of the module hash. 2518 if (!hsOpts.Sysroot.empty()) { 2519 SmallString<128> systemVersionFile; 2520 systemVersionFile += hsOpts.Sysroot; 2521 llvm::sys::path::append(systemVersionFile, "System"); 2522 llvm::sys::path::append(systemVersionFile, "Library"); 2523 llvm::sys::path::append(systemVersionFile, "CoreServices"); 2524 llvm::sys::path::append(systemVersionFile, "SystemVersion.plist"); 2525 2526 llvm::ErrorOr<std::unique_ptr<llvm::MemoryBuffer>> buffer = 2527 llvm::MemoryBuffer::getFile(systemVersionFile); 2528 if (buffer) { 2529 code = hash_combine(code, buffer.get()->getBuffer()); 2530 2531 struct stat statBuf; 2532 if (stat(systemVersionFile.c_str(), &statBuf) == 0) 2533 code = hash_combine(code, statBuf.st_mtime); 2534 } 2535 } 2536 2537 return llvm::APInt(64, code).toString(36, /*Signed=*/false); 2538 } 2539 2540 namespace clang { 2541 2542 template<typename IntTy> 2543 static IntTy getLastArgIntValueImpl(const ArgList &Args, OptSpecifier Id, 2544 IntTy Default, 2545 DiagnosticsEngine *Diags) { 2546 IntTy Res = Default; 2547 if (Arg *A = Args.getLastArg(Id)) { 2548 if (StringRef(A->getValue()).getAsInteger(10, Res)) { 2549 if (Diags) 2550 Diags->Report(diag::err_drv_invalid_int_value) << A->getAsString(Args) 2551 << A->getValue(); 2552 } 2553 } 2554 return Res; 2555 } 2556 2557 2558 // Declared in clang/Frontend/Utils.h. 2559 int getLastArgIntValue(const ArgList &Args, OptSpecifier Id, int Default, 2560 DiagnosticsEngine *Diags) { 2561 return getLastArgIntValueImpl<int>(Args, Id, Default, Diags); 2562 } 2563 2564 uint64_t getLastArgUInt64Value(const ArgList &Args, OptSpecifier Id, 2565 uint64_t Default, 2566 DiagnosticsEngine *Diags) { 2567 return getLastArgIntValueImpl<uint64_t>(Args, Id, Default, Diags); 2568 } 2569 2570 void BuryPointer(const void *Ptr) { 2571 // This function may be called only a small fixed amount of times per each 2572 // invocation, otherwise we do actually have a leak which we want to report. 2573 // If this function is called more than kGraveYardMaxSize times, the pointers 2574 // will not be properly buried and a leak detector will report a leak, which 2575 // is what we want in such case. 2576 static const size_t kGraveYardMaxSize = 16; 2577 LLVM_ATTRIBUTE_UNUSED static const void *GraveYard[kGraveYardMaxSize]; 2578 static std::atomic<unsigned> GraveYardSize; 2579 unsigned Idx = GraveYardSize++; 2580 if (Idx >= kGraveYardMaxSize) 2581 return; 2582 GraveYard[Idx] = Ptr; 2583 } 2584 2585 IntrusiveRefCntPtr<vfs::FileSystem> 2586 createVFSFromCompilerInvocation(const CompilerInvocation &CI, 2587 DiagnosticsEngine &Diags) { 2588 if (CI.getHeaderSearchOpts().VFSOverlayFiles.empty()) 2589 return vfs::getRealFileSystem(); 2590 2591 IntrusiveRefCntPtr<vfs::OverlayFileSystem> 2592 Overlay(new vfs::OverlayFileSystem(vfs::getRealFileSystem())); 2593 // earlier vfs files are on the bottom 2594 for (const std::string &File : CI.getHeaderSearchOpts().VFSOverlayFiles) { 2595 llvm::ErrorOr<std::unique_ptr<llvm::MemoryBuffer>> Buffer = 2596 llvm::MemoryBuffer::getFile(File); 2597 if (!Buffer) { 2598 Diags.Report(diag::err_missing_vfs_overlay_file) << File; 2599 return IntrusiveRefCntPtr<vfs::FileSystem>(); 2600 } 2601 2602 IntrusiveRefCntPtr<vfs::FileSystem> FS = vfs::getVFSFromYAML( 2603 std::move(Buffer.get()), /*DiagHandler*/ nullptr, File); 2604 if (!FS.get()) { 2605 Diags.Report(diag::err_invalid_vfs_overlay) << File; 2606 return IntrusiveRefCntPtr<vfs::FileSystem>(); 2607 } 2608 Overlay->pushOverlay(FS); 2609 } 2610 return Overlay; 2611 } 2612 } // end namespace clang 2613