1 //===--- CompilerInvocation.cpp -------------------------------------------===// 2 // 3 // The LLVM Compiler Infrastructure 4 // 5 // This file is distributed under the University of Illinois Open Source 6 // License. See LICENSE.TXT for details. 7 // 8 //===----------------------------------------------------------------------===// 9 10 #include "TestModuleFileExtension.h" 11 #include "clang/Frontend/CompilerInvocation.h" 12 #include "clang/Basic/FileManager.h" 13 #include "clang/Basic/Version.h" 14 #include "clang/Config/config.h" 15 #include "clang/Driver/DriverDiagnostic.h" 16 #include "clang/Driver/Options.h" 17 #include "clang/Driver/Util.h" 18 #include "clang/Frontend/FrontendDiagnostic.h" 19 #include "clang/Frontend/LangStandard.h" 20 #include "clang/Frontend/Utils.h" 21 #include "clang/Lex/HeaderSearchOptions.h" 22 #include "clang/Serialization/ASTReader.h" 23 #include "clang/Serialization/ModuleFileExtension.h" 24 #include "llvm/ADT/Hashing.h" 25 #include "llvm/ADT/STLExtras.h" 26 #include "llvm/ADT/SmallVector.h" 27 #include "llvm/ADT/StringExtras.h" 28 #include "llvm/ADT/StringSwitch.h" 29 #include "llvm/ADT/Triple.h" 30 #include "llvm/Linker/Linker.h" 31 #include "llvm/Option/Arg.h" 32 #include "llvm/Option/ArgList.h" 33 #include "llvm/Option/OptTable.h" 34 #include "llvm/Option/Option.h" 35 #include "llvm/Support/CodeGen.h" 36 #include "llvm/Support/ErrorHandling.h" 37 #include "llvm/Support/FileSystem.h" 38 #include "llvm/Support/Host.h" 39 #include "llvm/Support/Path.h" 40 #include "llvm/Support/Process.h" 41 #include "llvm/Target/TargetOptions.h" 42 #include <atomic> 43 #include <memory> 44 #include <sys/stat.h> 45 #include <system_error> 46 using namespace clang; 47 48 //===----------------------------------------------------------------------===// 49 // Initialization. 50 //===----------------------------------------------------------------------===// 51 52 CompilerInvocationBase::CompilerInvocationBase() 53 : LangOpts(new LangOptions()), TargetOpts(new TargetOptions()), 54 DiagnosticOpts(new DiagnosticOptions()), 55 HeaderSearchOpts(new HeaderSearchOptions()), 56 PreprocessorOpts(new PreprocessorOptions()) {} 57 58 CompilerInvocationBase::CompilerInvocationBase(const CompilerInvocationBase &X) 59 : RefCountedBase<CompilerInvocation>(), 60 LangOpts(new LangOptions(*X.getLangOpts())), 61 TargetOpts(new TargetOptions(X.getTargetOpts())), 62 DiagnosticOpts(new DiagnosticOptions(X.getDiagnosticOpts())), 63 HeaderSearchOpts(new HeaderSearchOptions(X.getHeaderSearchOpts())), 64 PreprocessorOpts(new PreprocessorOptions(X.getPreprocessorOpts())) {} 65 66 CompilerInvocationBase::~CompilerInvocationBase() {} 67 68 //===----------------------------------------------------------------------===// 69 // Deserialization (from args) 70 //===----------------------------------------------------------------------===// 71 72 using namespace clang::driver; 73 using namespace clang::driver::options; 74 using namespace llvm::opt; 75 76 // 77 78 static unsigned getOptimizationLevel(ArgList &Args, InputKind IK, 79 DiagnosticsEngine &Diags) { 80 unsigned DefaultOpt = 0; 81 if (IK == IK_OpenCL && !Args.hasArg(OPT_cl_opt_disable)) 82 DefaultOpt = 2; 83 84 if (Arg *A = Args.getLastArg(options::OPT_O_Group)) { 85 if (A->getOption().matches(options::OPT_O0)) 86 return 0; 87 88 if (A->getOption().matches(options::OPT_Ofast)) 89 return 3; 90 91 assert (A->getOption().matches(options::OPT_O)); 92 93 StringRef S(A->getValue()); 94 if (S == "s" || S == "z" || S.empty()) 95 return 2; 96 97 return getLastArgIntValue(Args, OPT_O, DefaultOpt, Diags); 98 } 99 100 return DefaultOpt; 101 } 102 103 static unsigned getOptimizationLevelSize(ArgList &Args) { 104 if (Arg *A = Args.getLastArg(options::OPT_O_Group)) { 105 if (A->getOption().matches(options::OPT_O)) { 106 switch (A->getValue()[0]) { 107 default: 108 return 0; 109 case 's': 110 return 1; 111 case 'z': 112 return 2; 113 } 114 } 115 } 116 return 0; 117 } 118 119 static void addDiagnosticArgs(ArgList &Args, OptSpecifier Group, 120 OptSpecifier GroupWithValue, 121 std::vector<std::string> &Diagnostics) { 122 for (Arg *A : Args.filtered(Group)) { 123 if (A->getOption().getKind() == Option::FlagClass) { 124 // The argument is a pure flag (such as OPT_Wall or OPT_Wdeprecated). Add 125 // its name (minus the "W" or "R" at the beginning) to the warning list. 126 Diagnostics.push_back(A->getOption().getName().drop_front(1)); 127 } else if (A->getOption().matches(GroupWithValue)) { 128 // This is -Wfoo= or -Rfoo=, where foo is the name of the diagnostic group. 129 Diagnostics.push_back(A->getOption().getName().drop_front(1).rtrim("=-")); 130 } else { 131 // Otherwise, add its value (for OPT_W_Joined and similar). 132 for (const char *Arg : A->getValues()) 133 Diagnostics.emplace_back(Arg); 134 } 135 } 136 } 137 138 static bool ParseAnalyzerArgs(AnalyzerOptions &Opts, ArgList &Args, 139 DiagnosticsEngine &Diags) { 140 using namespace options; 141 bool Success = true; 142 if (Arg *A = Args.getLastArg(OPT_analyzer_store)) { 143 StringRef Name = A->getValue(); 144 AnalysisStores Value = llvm::StringSwitch<AnalysisStores>(Name) 145 #define ANALYSIS_STORE(NAME, CMDFLAG, DESC, CREATFN) \ 146 .Case(CMDFLAG, NAME##Model) 147 #include "clang/StaticAnalyzer/Core/Analyses.def" 148 .Default(NumStores); 149 if (Value == NumStores) { 150 Diags.Report(diag::err_drv_invalid_value) 151 << A->getAsString(Args) << Name; 152 Success = false; 153 } else { 154 Opts.AnalysisStoreOpt = Value; 155 } 156 } 157 158 if (Arg *A = Args.getLastArg(OPT_analyzer_constraints)) { 159 StringRef Name = A->getValue(); 160 AnalysisConstraints Value = llvm::StringSwitch<AnalysisConstraints>(Name) 161 #define ANALYSIS_CONSTRAINTS(NAME, CMDFLAG, DESC, CREATFN) \ 162 .Case(CMDFLAG, NAME##Model) 163 #include "clang/StaticAnalyzer/Core/Analyses.def" 164 .Default(NumConstraints); 165 if (Value == NumConstraints) { 166 Diags.Report(diag::err_drv_invalid_value) 167 << A->getAsString(Args) << Name; 168 Success = false; 169 } else { 170 Opts.AnalysisConstraintsOpt = Value; 171 } 172 } 173 174 if (Arg *A = Args.getLastArg(OPT_analyzer_output)) { 175 StringRef Name = A->getValue(); 176 AnalysisDiagClients Value = llvm::StringSwitch<AnalysisDiagClients>(Name) 177 #define ANALYSIS_DIAGNOSTICS(NAME, CMDFLAG, DESC, CREATFN) \ 178 .Case(CMDFLAG, PD_##NAME) 179 #include "clang/StaticAnalyzer/Core/Analyses.def" 180 .Default(NUM_ANALYSIS_DIAG_CLIENTS); 181 if (Value == NUM_ANALYSIS_DIAG_CLIENTS) { 182 Diags.Report(diag::err_drv_invalid_value) 183 << A->getAsString(Args) << Name; 184 Success = false; 185 } else { 186 Opts.AnalysisDiagOpt = Value; 187 } 188 } 189 190 if (Arg *A = Args.getLastArg(OPT_analyzer_purge)) { 191 StringRef Name = A->getValue(); 192 AnalysisPurgeMode Value = llvm::StringSwitch<AnalysisPurgeMode>(Name) 193 #define ANALYSIS_PURGE(NAME, CMDFLAG, DESC) \ 194 .Case(CMDFLAG, NAME) 195 #include "clang/StaticAnalyzer/Core/Analyses.def" 196 .Default(NumPurgeModes); 197 if (Value == NumPurgeModes) { 198 Diags.Report(diag::err_drv_invalid_value) 199 << A->getAsString(Args) << Name; 200 Success = false; 201 } else { 202 Opts.AnalysisPurgeOpt = Value; 203 } 204 } 205 206 if (Arg *A = Args.getLastArg(OPT_analyzer_inlining_mode)) { 207 StringRef Name = A->getValue(); 208 AnalysisInliningMode Value = llvm::StringSwitch<AnalysisInliningMode>(Name) 209 #define ANALYSIS_INLINING_MODE(NAME, CMDFLAG, DESC) \ 210 .Case(CMDFLAG, NAME) 211 #include "clang/StaticAnalyzer/Core/Analyses.def" 212 .Default(NumInliningModes); 213 if (Value == NumInliningModes) { 214 Diags.Report(diag::err_drv_invalid_value) 215 << A->getAsString(Args) << Name; 216 Success = false; 217 } else { 218 Opts.InliningMode = Value; 219 } 220 } 221 222 Opts.ShowCheckerHelp = Args.hasArg(OPT_analyzer_checker_help); 223 Opts.DisableAllChecks = Args.hasArg(OPT_analyzer_disable_all_checks); 224 225 Opts.visualizeExplodedGraphWithGraphViz = 226 Args.hasArg(OPT_analyzer_viz_egraph_graphviz); 227 Opts.visualizeExplodedGraphWithUbiGraph = 228 Args.hasArg(OPT_analyzer_viz_egraph_ubigraph); 229 Opts.NoRetryExhausted = Args.hasArg(OPT_analyzer_disable_retry_exhausted); 230 Opts.AnalyzeAll = Args.hasArg(OPT_analyzer_opt_analyze_headers); 231 Opts.AnalyzerDisplayProgress = Args.hasArg(OPT_analyzer_display_progress); 232 Opts.AnalyzeNestedBlocks = 233 Args.hasArg(OPT_analyzer_opt_analyze_nested_blocks); 234 Opts.eagerlyAssumeBinOpBifurcation = Args.hasArg(OPT_analyzer_eagerly_assume); 235 Opts.AnalyzeSpecificFunction = Args.getLastArgValue(OPT_analyze_function); 236 Opts.UnoptimizedCFG = Args.hasArg(OPT_analysis_UnoptimizedCFG); 237 Opts.TrimGraph = Args.hasArg(OPT_trim_egraph); 238 Opts.maxBlockVisitOnPath = 239 getLastArgIntValue(Args, OPT_analyzer_max_loop, 4, Diags); 240 Opts.PrintStats = Args.hasArg(OPT_analyzer_stats); 241 Opts.InlineMaxStackDepth = 242 getLastArgIntValue(Args, OPT_analyzer_inline_max_stack_depth, 243 Opts.InlineMaxStackDepth, Diags); 244 245 Opts.CheckersControlList.clear(); 246 for (const Arg *A : 247 Args.filtered(OPT_analyzer_checker, OPT_analyzer_disable_checker)) { 248 A->claim(); 249 bool enable = (A->getOption().getID() == OPT_analyzer_checker); 250 // We can have a list of comma separated checker names, e.g: 251 // '-analyzer-checker=cocoa,unix' 252 StringRef checkerList = A->getValue(); 253 SmallVector<StringRef, 4> checkers; 254 checkerList.split(checkers, ","); 255 for (StringRef checker : checkers) 256 Opts.CheckersControlList.emplace_back(checker, enable); 257 } 258 259 // Go through the analyzer configuration options. 260 for (const Arg *A : Args.filtered(OPT_analyzer_config)) { 261 A->claim(); 262 // We can have a list of comma separated config names, e.g: 263 // '-analyzer-config key1=val1,key2=val2' 264 StringRef configList = A->getValue(); 265 SmallVector<StringRef, 4> configVals; 266 configList.split(configVals, ","); 267 for (unsigned i = 0, e = configVals.size(); i != e; ++i) { 268 StringRef key, val; 269 std::tie(key, val) = configVals[i].split("="); 270 if (val.empty()) { 271 Diags.Report(SourceLocation(), 272 diag::err_analyzer_config_no_value) << configVals[i]; 273 Success = false; 274 break; 275 } 276 if (val.find('=') != StringRef::npos) { 277 Diags.Report(SourceLocation(), 278 diag::err_analyzer_config_multiple_values) 279 << configVals[i]; 280 Success = false; 281 break; 282 } 283 Opts.Config[key] = val; 284 } 285 } 286 287 return Success; 288 } 289 290 static bool ParseMigratorArgs(MigratorOptions &Opts, ArgList &Args) { 291 Opts.NoNSAllocReallocError = Args.hasArg(OPT_migrator_no_nsalloc_error); 292 Opts.NoFinalizeRemoval = Args.hasArg(OPT_migrator_no_finalize_removal); 293 return true; 294 } 295 296 static void ParseCommentArgs(CommentOptions &Opts, ArgList &Args) { 297 Opts.BlockCommandNames = Args.getAllArgValues(OPT_fcomment_block_commands); 298 Opts.ParseAllComments = Args.hasArg(OPT_fparse_all_comments); 299 } 300 301 static StringRef getCodeModel(ArgList &Args, DiagnosticsEngine &Diags) { 302 if (Arg *A = Args.getLastArg(OPT_mcode_model)) { 303 StringRef Value = A->getValue(); 304 if (Value == "small" || Value == "kernel" || Value == "medium" || 305 Value == "large") 306 return Value; 307 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Value; 308 } 309 return "default"; 310 } 311 312 /// \brief Create a new Regex instance out of the string value in \p RpassArg. 313 /// It returns a pointer to the newly generated Regex instance. 314 static std::shared_ptr<llvm::Regex> 315 GenerateOptimizationRemarkRegex(DiagnosticsEngine &Diags, ArgList &Args, 316 Arg *RpassArg) { 317 StringRef Val = RpassArg->getValue(); 318 std::string RegexError; 319 std::shared_ptr<llvm::Regex> Pattern = std::make_shared<llvm::Regex>(Val); 320 if (!Pattern->isValid(RegexError)) { 321 Diags.Report(diag::err_drv_optimization_remark_pattern) 322 << RegexError << RpassArg->getAsString(Args); 323 Pattern.reset(); 324 } 325 return Pattern; 326 } 327 328 static bool parseDiagnosticLevelMask(StringRef FlagName, 329 const std::vector<std::string> &Levels, 330 DiagnosticsEngine *Diags, 331 DiagnosticLevelMask &M) { 332 bool Success = true; 333 for (const auto &Level : Levels) { 334 DiagnosticLevelMask const PM = 335 llvm::StringSwitch<DiagnosticLevelMask>(Level) 336 .Case("note", DiagnosticLevelMask::Note) 337 .Case("remark", DiagnosticLevelMask::Remark) 338 .Case("warning", DiagnosticLevelMask::Warning) 339 .Case("error", DiagnosticLevelMask::Error) 340 .Default(DiagnosticLevelMask::None); 341 if (PM == DiagnosticLevelMask::None) { 342 Success = false; 343 if (Diags) 344 Diags->Report(diag::err_drv_invalid_value) << FlagName << Level; 345 } 346 M = M | PM; 347 } 348 return Success; 349 } 350 351 static void parseSanitizerKinds(StringRef FlagName, 352 const std::vector<std::string> &Sanitizers, 353 DiagnosticsEngine &Diags, SanitizerSet &S) { 354 for (const auto &Sanitizer : Sanitizers) { 355 SanitizerMask K = parseSanitizerValue(Sanitizer, /*AllowGroups=*/false); 356 if (K == 0) 357 Diags.Report(diag::err_drv_invalid_value) << FlagName << Sanitizer; 358 else 359 S.set(K, true); 360 } 361 } 362 363 static bool ParseCodeGenArgs(CodeGenOptions &Opts, ArgList &Args, InputKind IK, 364 DiagnosticsEngine &Diags, 365 const TargetOptions &TargetOpts) { 366 using namespace options; 367 bool Success = true; 368 369 unsigned OptimizationLevel = getOptimizationLevel(Args, IK, Diags); 370 // TODO: This could be done in Driver 371 unsigned MaxOptLevel = 3; 372 if (OptimizationLevel > MaxOptLevel) { 373 // If the optimization level is not supported, fall back on the default 374 // optimization 375 Diags.Report(diag::warn_drv_optimization_value) 376 << Args.getLastArg(OPT_O)->getAsString(Args) << "-O" << MaxOptLevel; 377 OptimizationLevel = MaxOptLevel; 378 } 379 Opts.OptimizationLevel = OptimizationLevel; 380 381 // We must always run at least the always inlining pass. 382 Opts.setInlining( 383 (Opts.OptimizationLevel > 1) ? CodeGenOptions::NormalInlining 384 : CodeGenOptions::OnlyAlwaysInlining); 385 // -fno-inline-functions overrides OptimizationLevel > 1. 386 Opts.NoInline = Args.hasArg(OPT_fno_inline); 387 Opts.setInlining(Args.hasArg(OPT_fno_inline_functions) ? 388 CodeGenOptions::OnlyAlwaysInlining : Opts.getInlining()); 389 390 if (Arg *A = Args.getLastArg(OPT_fveclib)) { 391 StringRef Name = A->getValue(); 392 if (Name == "Accelerate") 393 Opts.setVecLib(CodeGenOptions::Accelerate); 394 else if (Name == "none") 395 Opts.setVecLib(CodeGenOptions::NoLibrary); 396 else 397 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Name; 398 } 399 400 if (Arg *A = Args.getLastArg(OPT_debug_info_kind_EQ)) { 401 Opts.setDebugInfo( 402 llvm::StringSwitch<CodeGenOptions::DebugInfoKind>(A->getValue()) 403 .Case("line-tables-only", CodeGenOptions::DebugLineTablesOnly) 404 .Case("limited", CodeGenOptions::LimitedDebugInfo) 405 .Case("standalone", CodeGenOptions::FullDebugInfo)); 406 } 407 Opts.DwarfVersion = getLastArgIntValue(Args, OPT_dwarf_version_EQ, 0, Diags); 408 Opts.DebugColumnInfo = Args.hasArg(OPT_dwarf_column_info); 409 Opts.EmitCodeView = Args.hasArg(OPT_gcodeview); 410 Opts.SplitDwarfFile = Args.getLastArgValue(OPT_split_dwarf_file); 411 Opts.DebugTypeExtRefs = Args.hasArg(OPT_dwarf_ext_refs); 412 413 for (const auto &Arg : Args.getAllArgValues(OPT_fdebug_prefix_map_EQ)) 414 Opts.DebugPrefixMap.insert(StringRef(Arg).split('=')); 415 416 if (const Arg *A = 417 Args.getLastArg(OPT_emit_llvm_uselists, OPT_no_emit_llvm_uselists)) 418 Opts.EmitLLVMUseLists = A->getOption().getID() == OPT_emit_llvm_uselists; 419 420 Opts.DisableLLVMOpts = Args.hasArg(OPT_disable_llvm_optzns); 421 Opts.DisableLLVMPasses = Args.hasArg(OPT_disable_llvm_passes); 422 Opts.DisableRedZone = Args.hasArg(OPT_disable_red_zone); 423 Opts.ForbidGuardVariables = Args.hasArg(OPT_fforbid_guard_variables); 424 Opts.UseRegisterSizedBitfieldAccess = Args.hasArg( 425 OPT_fuse_register_sized_bitfield_access); 426 Opts.RelaxedAliasing = Args.hasArg(OPT_relaxed_aliasing); 427 Opts.StructPathTBAA = !Args.hasArg(OPT_no_struct_path_tbaa); 428 Opts.DwarfDebugFlags = Args.getLastArgValue(OPT_dwarf_debug_flags); 429 Opts.MergeAllConstants = !Args.hasArg(OPT_fno_merge_all_constants); 430 Opts.NoCommon = Args.hasArg(OPT_fno_common); 431 Opts.NoImplicitFloat = Args.hasArg(OPT_no_implicit_float); 432 Opts.OptimizeSize = getOptimizationLevelSize(Args); 433 Opts.SimplifyLibCalls = !(Args.hasArg(OPT_fno_builtin) || 434 Args.hasArg(OPT_ffreestanding)); 435 Opts.UnrollLoops = 436 Args.hasFlag(OPT_funroll_loops, OPT_fno_unroll_loops, 437 (Opts.OptimizationLevel > 1 && !Opts.OptimizeSize)); 438 Opts.RerollLoops = Args.hasArg(OPT_freroll_loops); 439 440 Opts.DisableIntegratedAS = Args.hasArg(OPT_fno_integrated_as); 441 Opts.Autolink = !Args.hasArg(OPT_fno_autolink); 442 Opts.SampleProfileFile = Args.getLastArgValue(OPT_fprofile_sample_use_EQ); 443 Opts.ProfileInstrGenerate = Args.hasArg(OPT_fprofile_instr_generate) || 444 Args.hasArg(OPT_fprofile_instr_generate_EQ); 445 Opts.InstrProfileOutput = Args.getLastArgValue(OPT_fprofile_instr_generate_EQ); 446 Opts.InstrProfileInput = Args.getLastArgValue(OPT_fprofile_instr_use_EQ); 447 Opts.CoverageMapping = 448 Args.hasFlag(OPT_fcoverage_mapping, OPT_fno_coverage_mapping, false); 449 Opts.DumpCoverageMapping = Args.hasArg(OPT_dump_coverage_mapping); 450 Opts.AsmVerbose = Args.hasArg(OPT_masm_verbose); 451 Opts.ObjCAutoRefCountExceptions = Args.hasArg(OPT_fobjc_arc_exceptions); 452 Opts.CXAAtExit = !Args.hasArg(OPT_fno_use_cxa_atexit); 453 Opts.CXXCtorDtorAliases = Args.hasArg(OPT_mconstructor_aliases); 454 Opts.CodeModel = getCodeModel(Args, Diags); 455 Opts.DebugPass = Args.getLastArgValue(OPT_mdebug_pass); 456 Opts.DisableFPElim = 457 (Args.hasArg(OPT_mdisable_fp_elim) || Args.hasArg(OPT_pg)); 458 Opts.DisableFree = Args.hasArg(OPT_disable_free); 459 Opts.DisableTailCalls = Args.hasArg(OPT_mdisable_tail_calls); 460 Opts.FloatABI = Args.getLastArgValue(OPT_mfloat_abi); 461 if (Arg *A = Args.getLastArg(OPT_meabi)) { 462 StringRef Value = A->getValue(); 463 llvm::EABI EABIVersion = llvm::StringSwitch<llvm::EABI>(Value) 464 .Case("default", llvm::EABI::Default) 465 .Case("4", llvm::EABI::EABI4) 466 .Case("5", llvm::EABI::EABI5) 467 .Case("gnu", llvm::EABI::GNU) 468 .Default(llvm::EABI::Unknown); 469 if (EABIVersion == llvm::EABI::Unknown) 470 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) 471 << Value; 472 else 473 Opts.EABIVersion = Value; 474 } 475 Opts.LessPreciseFPMAD = Args.hasArg(OPT_cl_mad_enable); 476 Opts.LimitFloatPrecision = Args.getLastArgValue(OPT_mlimit_float_precision); 477 Opts.NoInfsFPMath = (Args.hasArg(OPT_menable_no_infinities) || 478 Args.hasArg(OPT_cl_finite_math_only) || 479 Args.hasArg(OPT_cl_fast_relaxed_math)); 480 Opts.NoNaNsFPMath = (Args.hasArg(OPT_menable_no_nans) || 481 Args.hasArg(OPT_cl_unsafe_math_optimizations) || 482 Args.hasArg(OPT_cl_finite_math_only) || 483 Args.hasArg(OPT_cl_fast_relaxed_math)); 484 Opts.NoSignedZeros = Args.hasArg(OPT_fno_signed_zeros); 485 Opts.ReciprocalMath = Args.hasArg(OPT_freciprocal_math); 486 Opts.NoZeroInitializedInBSS = Args.hasArg(OPT_mno_zero_initialized_in_bss); 487 Opts.BackendOptions = Args.getAllArgValues(OPT_backend_option); 488 Opts.NumRegisterParameters = getLastArgIntValue(Args, OPT_mregparm, 0, Diags); 489 Opts.NoExecStack = Args.hasArg(OPT_mno_exec_stack); 490 Opts.FatalWarnings = Args.hasArg(OPT_massembler_fatal_warnings); 491 Opts.EnableSegmentedStacks = Args.hasArg(OPT_split_stacks); 492 Opts.RelaxAll = Args.hasArg(OPT_mrelax_all); 493 Opts.OmitLeafFramePointer = Args.hasArg(OPT_momit_leaf_frame_pointer); 494 Opts.SaveTempLabels = Args.hasArg(OPT_msave_temp_labels); 495 Opts.NoDwarfDirectoryAsm = Args.hasArg(OPT_fno_dwarf_directory_asm); 496 Opts.SoftFloat = Args.hasArg(OPT_msoft_float); 497 Opts.StrictEnums = Args.hasArg(OPT_fstrict_enums); 498 Opts.StrictVTablePointers = Args.hasArg(OPT_fstrict_vtable_pointers); 499 Opts.UnsafeFPMath = Args.hasArg(OPT_menable_unsafe_fp_math) || 500 Args.hasArg(OPT_cl_unsafe_math_optimizations) || 501 Args.hasArg(OPT_cl_fast_relaxed_math); 502 Opts.UnwindTables = Args.hasArg(OPT_munwind_tables); 503 Opts.RelocationModel = Args.getLastArgValue(OPT_mrelocation_model, "pic"); 504 Opts.ThreadModel = Args.getLastArgValue(OPT_mthread_model, "posix"); 505 if (Opts.ThreadModel != "posix" && Opts.ThreadModel != "single") 506 Diags.Report(diag::err_drv_invalid_value) 507 << Args.getLastArg(OPT_mthread_model)->getAsString(Args) 508 << Opts.ThreadModel; 509 Opts.TrapFuncName = Args.getLastArgValue(OPT_ftrap_function_EQ); 510 Opts.UseInitArray = Args.hasArg(OPT_fuse_init_array); 511 512 Opts.FunctionSections = Args.hasFlag(OPT_ffunction_sections, 513 OPT_fno_function_sections, false); 514 Opts.DataSections = Args.hasFlag(OPT_fdata_sections, 515 OPT_fno_data_sections, false); 516 Opts.UniqueSectionNames = Args.hasFlag(OPT_funique_section_names, 517 OPT_fno_unique_section_names, true); 518 519 Opts.MergeFunctions = Args.hasArg(OPT_fmerge_functions); 520 521 Opts.PrepareForLTO = Args.hasArg(OPT_flto, OPT_flto_EQ); 522 const Arg *A = Args.getLastArg(OPT_flto, OPT_flto_EQ); 523 Opts.EmitFunctionSummary = A && A->containsValue("thin"); 524 525 Opts.MSVolatile = Args.hasArg(OPT_fms_volatile); 526 527 Opts.VectorizeBB = Args.hasArg(OPT_vectorize_slp_aggressive); 528 Opts.VectorizeLoop = Args.hasArg(OPT_vectorize_loops); 529 Opts.VectorizeSLP = Args.hasArg(OPT_vectorize_slp); 530 531 Opts.MainFileName = Args.getLastArgValue(OPT_main_file_name); 532 Opts.VerifyModule = !Args.hasArg(OPT_disable_llvm_verifier); 533 534 Opts.DisableGCov = Args.hasArg(OPT_test_coverage); 535 Opts.EmitGcovArcs = Args.hasArg(OPT_femit_coverage_data); 536 Opts.EmitGcovNotes = Args.hasArg(OPT_femit_coverage_notes); 537 if (Opts.EmitGcovArcs || Opts.EmitGcovNotes) { 538 Opts.CoverageFile = Args.getLastArgValue(OPT_coverage_file); 539 Opts.CoverageExtraChecksum = Args.hasArg(OPT_coverage_cfg_checksum); 540 Opts.CoverageNoFunctionNamesInData = 541 Args.hasArg(OPT_coverage_no_function_names_in_data); 542 Opts.CoverageExitBlockBeforeBody = 543 Args.hasArg(OPT_coverage_exit_block_before_body); 544 if (Args.hasArg(OPT_coverage_version_EQ)) { 545 StringRef CoverageVersion = Args.getLastArgValue(OPT_coverage_version_EQ); 546 if (CoverageVersion.size() != 4) { 547 Diags.Report(diag::err_drv_invalid_value) 548 << Args.getLastArg(OPT_coverage_version_EQ)->getAsString(Args) 549 << CoverageVersion; 550 } else { 551 memcpy(Opts.CoverageVersion, CoverageVersion.data(), 4); 552 } 553 } 554 } 555 556 Opts.InstrumentFunctions = Args.hasArg(OPT_finstrument_functions); 557 Opts.InstrumentForProfiling = Args.hasArg(OPT_pg); 558 Opts.EmitOpenCLArgMetadata = Args.hasArg(OPT_cl_kernel_arg_info); 559 Opts.CompressDebugSections = Args.hasArg(OPT_compress_debug_sections); 560 Opts.DebugCompilationDir = Args.getLastArgValue(OPT_fdebug_compilation_dir); 561 for (auto A : Args.filtered(OPT_mlink_bitcode_file, OPT_mlink_cuda_bitcode)) { 562 unsigned LinkFlags = llvm::Linker::Flags::None; 563 if (A->getOption().matches(OPT_mlink_cuda_bitcode)) 564 LinkFlags = llvm::Linker::Flags::LinkOnlyNeeded | 565 llvm::Linker::Flags::InternalizeLinkedSymbols; 566 Opts.LinkBitcodeFiles.push_back(std::make_pair(LinkFlags, A->getValue())); 567 } 568 Opts.SanitizeCoverageType = 569 getLastArgIntValue(Args, OPT_fsanitize_coverage_type, 0, Diags); 570 Opts.SanitizeCoverageIndirectCalls = 571 Args.hasArg(OPT_fsanitize_coverage_indirect_calls); 572 Opts.SanitizeCoverageTraceBB = Args.hasArg(OPT_fsanitize_coverage_trace_bb); 573 Opts.SanitizeCoverageTraceCmp = Args.hasArg(OPT_fsanitize_coverage_trace_cmp); 574 Opts.SanitizeCoverage8bitCounters = 575 Args.hasArg(OPT_fsanitize_coverage_8bit_counters); 576 Opts.SanitizeMemoryTrackOrigins = 577 getLastArgIntValue(Args, OPT_fsanitize_memory_track_origins_EQ, 0, Diags); 578 Opts.SanitizeMemoryUseAfterDtor = 579 Args.hasArg(OPT_fsanitize_memory_use_after_dtor); 580 Opts.SSPBufferSize = 581 getLastArgIntValue(Args, OPT_stack_protector_buffer_size, 8, Diags); 582 Opts.StackRealignment = Args.hasArg(OPT_mstackrealign); 583 if (Arg *A = Args.getLastArg(OPT_mstack_alignment)) { 584 StringRef Val = A->getValue(); 585 unsigned StackAlignment = Opts.StackAlignment; 586 Val.getAsInteger(10, StackAlignment); 587 Opts.StackAlignment = StackAlignment; 588 } 589 590 if (Arg *A = Args.getLastArg(OPT_mstack_probe_size)) { 591 StringRef Val = A->getValue(); 592 unsigned StackProbeSize = Opts.StackProbeSize; 593 Val.getAsInteger(0, StackProbeSize); 594 Opts.StackProbeSize = StackProbeSize; 595 } 596 597 if (Arg *A = Args.getLastArg(OPT_fobjc_dispatch_method_EQ)) { 598 StringRef Name = A->getValue(); 599 unsigned Method = llvm::StringSwitch<unsigned>(Name) 600 .Case("legacy", CodeGenOptions::Legacy) 601 .Case("non-legacy", CodeGenOptions::NonLegacy) 602 .Case("mixed", CodeGenOptions::Mixed) 603 .Default(~0U); 604 if (Method == ~0U) { 605 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Name; 606 Success = false; 607 } else { 608 Opts.setObjCDispatchMethod( 609 static_cast<CodeGenOptions::ObjCDispatchMethodKind>(Method)); 610 } 611 } 612 613 Opts.EmulatedTLS = 614 Args.hasFlag(OPT_femulated_tls, OPT_fno_emulated_tls, false); 615 616 if (Arg *A = Args.getLastArg(OPT_ftlsmodel_EQ)) { 617 StringRef Name = A->getValue(); 618 unsigned Model = llvm::StringSwitch<unsigned>(Name) 619 .Case("global-dynamic", CodeGenOptions::GeneralDynamicTLSModel) 620 .Case("local-dynamic", CodeGenOptions::LocalDynamicTLSModel) 621 .Case("initial-exec", CodeGenOptions::InitialExecTLSModel) 622 .Case("local-exec", CodeGenOptions::LocalExecTLSModel) 623 .Default(~0U); 624 if (Model == ~0U) { 625 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Name; 626 Success = false; 627 } else { 628 Opts.setDefaultTLSModel(static_cast<CodeGenOptions::TLSModel>(Model)); 629 } 630 } 631 632 if (Arg *A = Args.getLastArg(OPT_ffp_contract)) { 633 StringRef Val = A->getValue(); 634 if (Val == "fast") 635 Opts.setFPContractMode(CodeGenOptions::FPC_Fast); 636 else if (Val == "on") 637 Opts.setFPContractMode(CodeGenOptions::FPC_On); 638 else if (Val == "off") 639 Opts.setFPContractMode(CodeGenOptions::FPC_Off); 640 else 641 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Val; 642 } 643 644 if (Arg *A = Args.getLastArg(OPT_fpcc_struct_return, OPT_freg_struct_return)) { 645 if (A->getOption().matches(OPT_fpcc_struct_return)) { 646 Opts.setStructReturnConvention(CodeGenOptions::SRCK_OnStack); 647 } else { 648 assert(A->getOption().matches(OPT_freg_struct_return)); 649 Opts.setStructReturnConvention(CodeGenOptions::SRCK_InRegs); 650 } 651 } 652 653 Opts.DependentLibraries = Args.getAllArgValues(OPT_dependent_lib); 654 bool NeedLocTracking = false; 655 656 if (Arg *A = Args.getLastArg(OPT_Rpass_EQ)) { 657 Opts.OptimizationRemarkPattern = 658 GenerateOptimizationRemarkRegex(Diags, Args, A); 659 NeedLocTracking = true; 660 } 661 662 if (Arg *A = Args.getLastArg(OPT_Rpass_missed_EQ)) { 663 Opts.OptimizationRemarkMissedPattern = 664 GenerateOptimizationRemarkRegex(Diags, Args, A); 665 NeedLocTracking = true; 666 } 667 668 if (Arg *A = Args.getLastArg(OPT_Rpass_analysis_EQ)) { 669 Opts.OptimizationRemarkAnalysisPattern = 670 GenerateOptimizationRemarkRegex(Diags, Args, A); 671 NeedLocTracking = true; 672 } 673 674 // If the user requested to use a sample profile for PGO, then the 675 // backend will need to track source location information so the profile 676 // can be incorporated into the IR. 677 if (!Opts.SampleProfileFile.empty()) 678 NeedLocTracking = true; 679 680 // If the user requested a flag that requires source locations available in 681 // the backend, make sure that the backend tracks source location information. 682 if (NeedLocTracking && Opts.getDebugInfo() == CodeGenOptions::NoDebugInfo) 683 Opts.setDebugInfo(CodeGenOptions::LocTrackingOnly); 684 685 Opts.RewriteMapFiles = Args.getAllArgValues(OPT_frewrite_map_file); 686 687 // Parse -fsanitize-recover= arguments. 688 // FIXME: Report unrecoverable sanitizers incorrectly specified here. 689 parseSanitizerKinds("-fsanitize-recover=", 690 Args.getAllArgValues(OPT_fsanitize_recover_EQ), Diags, 691 Opts.SanitizeRecover); 692 parseSanitizerKinds("-fsanitize-trap=", 693 Args.getAllArgValues(OPT_fsanitize_trap_EQ), Diags, 694 Opts.SanitizeTrap); 695 696 Opts.CudaGpuBinaryFileNames = 697 Args.getAllArgValues(OPT_fcuda_include_gpubinary); 698 699 return Success; 700 } 701 702 static void ParseDependencyOutputArgs(DependencyOutputOptions &Opts, 703 ArgList &Args) { 704 using namespace options; 705 Opts.OutputFile = Args.getLastArgValue(OPT_dependency_file); 706 Opts.Targets = Args.getAllArgValues(OPT_MT); 707 Opts.IncludeSystemHeaders = Args.hasArg(OPT_sys_header_deps); 708 Opts.IncludeModuleFiles = Args.hasArg(OPT_module_file_deps); 709 Opts.UsePhonyTargets = Args.hasArg(OPT_MP); 710 Opts.ShowHeaderIncludes = Args.hasArg(OPT_H); 711 Opts.HeaderIncludeOutputFile = Args.getLastArgValue(OPT_header_include_file); 712 Opts.AddMissingHeaderDeps = Args.hasArg(OPT_MG); 713 Opts.PrintShowIncludes = Args.hasArg(OPT_show_includes); 714 Opts.DOTOutputFile = Args.getLastArgValue(OPT_dependency_dot); 715 Opts.ModuleDependencyOutputDir = 716 Args.getLastArgValue(OPT_module_dependency_dir); 717 if (Args.hasArg(OPT_MV)) 718 Opts.OutputFormat = DependencyOutputFormat::NMake; 719 // Add sanitizer blacklists as extra dependencies. 720 // They won't be discovered by the regular preprocessor, so 721 // we let make / ninja to know about this implicit dependency. 722 Opts.ExtraDeps = Args.getAllArgValues(OPT_fdepfile_entry); 723 auto ModuleFiles = Args.getAllArgValues(OPT_fmodule_file); 724 Opts.ExtraDeps.insert(Opts.ExtraDeps.end(), ModuleFiles.begin(), 725 ModuleFiles.end()); 726 } 727 728 bool clang::ParseDiagnosticArgs(DiagnosticOptions &Opts, ArgList &Args, 729 DiagnosticsEngine *Diags) { 730 using namespace options; 731 bool Success = true; 732 733 Opts.DiagnosticLogFile = Args.getLastArgValue(OPT_diagnostic_log_file); 734 if (Arg *A = 735 Args.getLastArg(OPT_diagnostic_serialized_file, OPT__serialize_diags)) 736 Opts.DiagnosticSerializationFile = A->getValue(); 737 Opts.IgnoreWarnings = Args.hasArg(OPT_w); 738 Opts.NoRewriteMacros = Args.hasArg(OPT_Wno_rewrite_macros); 739 Opts.Pedantic = Args.hasArg(OPT_pedantic); 740 Opts.PedanticErrors = Args.hasArg(OPT_pedantic_errors); 741 Opts.ShowCarets = !Args.hasArg(OPT_fno_caret_diagnostics); 742 Opts.ShowColors = Args.hasArg(OPT_fcolor_diagnostics); 743 Opts.ShowColumn = Args.hasFlag(OPT_fshow_column, 744 OPT_fno_show_column, 745 /*Default=*/true); 746 Opts.ShowFixits = !Args.hasArg(OPT_fno_diagnostics_fixit_info); 747 Opts.ShowLocation = !Args.hasArg(OPT_fno_show_source_location); 748 Opts.ShowOptionNames = Args.hasArg(OPT_fdiagnostics_show_option); 749 750 llvm::sys::Process::UseANSIEscapeCodes(Args.hasArg(OPT_fansi_escape_codes)); 751 752 // Default behavior is to not to show note include stacks. 753 Opts.ShowNoteIncludeStack = false; 754 if (Arg *A = Args.getLastArg(OPT_fdiagnostics_show_note_include_stack, 755 OPT_fno_diagnostics_show_note_include_stack)) 756 if (A->getOption().matches(OPT_fdiagnostics_show_note_include_stack)) 757 Opts.ShowNoteIncludeStack = true; 758 759 StringRef ShowOverloads = 760 Args.getLastArgValue(OPT_fshow_overloads_EQ, "all"); 761 if (ShowOverloads == "best") 762 Opts.setShowOverloads(Ovl_Best); 763 else if (ShowOverloads == "all") 764 Opts.setShowOverloads(Ovl_All); 765 else { 766 Success = false; 767 if (Diags) 768 Diags->Report(diag::err_drv_invalid_value) 769 << Args.getLastArg(OPT_fshow_overloads_EQ)->getAsString(Args) 770 << ShowOverloads; 771 } 772 773 StringRef ShowCategory = 774 Args.getLastArgValue(OPT_fdiagnostics_show_category, "none"); 775 if (ShowCategory == "none") 776 Opts.ShowCategories = 0; 777 else if (ShowCategory == "id") 778 Opts.ShowCategories = 1; 779 else if (ShowCategory == "name") 780 Opts.ShowCategories = 2; 781 else { 782 Success = false; 783 if (Diags) 784 Diags->Report(diag::err_drv_invalid_value) 785 << Args.getLastArg(OPT_fdiagnostics_show_category)->getAsString(Args) 786 << ShowCategory; 787 } 788 789 StringRef Format = 790 Args.getLastArgValue(OPT_fdiagnostics_format, "clang"); 791 if (Format == "clang") 792 Opts.setFormat(DiagnosticOptions::Clang); 793 else if (Format == "msvc") 794 Opts.setFormat(DiagnosticOptions::MSVC); 795 else if (Format == "msvc-fallback") { 796 Opts.setFormat(DiagnosticOptions::MSVC); 797 Opts.CLFallbackMode = true; 798 } else if (Format == "vi") 799 Opts.setFormat(DiagnosticOptions::Vi); 800 else { 801 Success = false; 802 if (Diags) 803 Diags->Report(diag::err_drv_invalid_value) 804 << Args.getLastArg(OPT_fdiagnostics_format)->getAsString(Args) 805 << Format; 806 } 807 808 Opts.ShowSourceRanges = Args.hasArg(OPT_fdiagnostics_print_source_range_info); 809 Opts.ShowParseableFixits = Args.hasArg(OPT_fdiagnostics_parseable_fixits); 810 Opts.ShowPresumedLoc = !Args.hasArg(OPT_fno_diagnostics_use_presumed_location); 811 Opts.VerifyDiagnostics = Args.hasArg(OPT_verify); 812 DiagnosticLevelMask DiagMask = DiagnosticLevelMask::None; 813 Success &= parseDiagnosticLevelMask("-verify-ignore-unexpected=", 814 Args.getAllArgValues(OPT_verify_ignore_unexpected_EQ), 815 Diags, DiagMask); 816 if (Args.hasArg(OPT_verify_ignore_unexpected)) 817 DiagMask = DiagnosticLevelMask::All; 818 Opts.setVerifyIgnoreUnexpected(DiagMask); 819 Opts.ElideType = !Args.hasArg(OPT_fno_elide_type); 820 Opts.ShowTemplateTree = Args.hasArg(OPT_fdiagnostics_show_template_tree); 821 Opts.ErrorLimit = getLastArgIntValue(Args, OPT_ferror_limit, 0, Diags); 822 Opts.MacroBacktraceLimit = 823 getLastArgIntValue(Args, OPT_fmacro_backtrace_limit, 824 DiagnosticOptions::DefaultMacroBacktraceLimit, Diags); 825 Opts.TemplateBacktraceLimit = getLastArgIntValue( 826 Args, OPT_ftemplate_backtrace_limit, 827 DiagnosticOptions::DefaultTemplateBacktraceLimit, Diags); 828 Opts.ConstexprBacktraceLimit = getLastArgIntValue( 829 Args, OPT_fconstexpr_backtrace_limit, 830 DiagnosticOptions::DefaultConstexprBacktraceLimit, Diags); 831 Opts.SpellCheckingLimit = getLastArgIntValue( 832 Args, OPT_fspell_checking_limit, 833 DiagnosticOptions::DefaultSpellCheckingLimit, Diags); 834 Opts.TabStop = getLastArgIntValue(Args, OPT_ftabstop, 835 DiagnosticOptions::DefaultTabStop, Diags); 836 if (Opts.TabStop == 0 || Opts.TabStop > DiagnosticOptions::MaxTabStop) { 837 Opts.TabStop = DiagnosticOptions::DefaultTabStop; 838 if (Diags) 839 Diags->Report(diag::warn_ignoring_ftabstop_value) 840 << Opts.TabStop << DiagnosticOptions::DefaultTabStop; 841 } 842 Opts.MessageLength = getLastArgIntValue(Args, OPT_fmessage_length, 0, Diags); 843 addDiagnosticArgs(Args, OPT_W_Group, OPT_W_value_Group, Opts.Warnings); 844 addDiagnosticArgs(Args, OPT_R_Group, OPT_R_value_Group, Opts.Remarks); 845 846 return Success; 847 } 848 849 static void ParseFileSystemArgs(FileSystemOptions &Opts, ArgList &Args) { 850 Opts.WorkingDir = Args.getLastArgValue(OPT_working_directory); 851 } 852 853 /// Parse the argument to the -ftest-module-file-extension 854 /// command-line argument. 855 /// 856 /// \returns true on error, false on success. 857 static bool parseTestModuleFileExtensionArg(StringRef Arg, 858 std::string &BlockName, 859 unsigned &MajorVersion, 860 unsigned &MinorVersion, 861 bool &Hashed, 862 std::string &UserInfo) { 863 SmallVector<StringRef, 5> Args; 864 Arg.split(Args, ':', 5); 865 if (Args.size() < 5) 866 return true; 867 868 BlockName = Args[0]; 869 if (Args[1].getAsInteger(10, MajorVersion)) return true; 870 if (Args[2].getAsInteger(10, MinorVersion)) return true; 871 if (Args[3].getAsInteger(2, Hashed)) return true; 872 if (Args.size() > 4) 873 UserInfo = Args[4]; 874 return false; 875 } 876 877 static InputKind ParseFrontendArgs(FrontendOptions &Opts, ArgList &Args, 878 DiagnosticsEngine &Diags) { 879 using namespace options; 880 Opts.ProgramAction = frontend::ParseSyntaxOnly; 881 if (const Arg *A = Args.getLastArg(OPT_Action_Group)) { 882 switch (A->getOption().getID()) { 883 default: 884 llvm_unreachable("Invalid option in group!"); 885 case OPT_ast_list: 886 Opts.ProgramAction = frontend::ASTDeclList; break; 887 case OPT_ast_dump: 888 case OPT_ast_dump_lookups: 889 Opts.ProgramAction = frontend::ASTDump; break; 890 case OPT_ast_print: 891 Opts.ProgramAction = frontend::ASTPrint; break; 892 case OPT_ast_view: 893 Opts.ProgramAction = frontend::ASTView; break; 894 case OPT_dump_raw_tokens: 895 Opts.ProgramAction = frontend::DumpRawTokens; break; 896 case OPT_dump_tokens: 897 Opts.ProgramAction = frontend::DumpTokens; break; 898 case OPT_S: 899 Opts.ProgramAction = frontend::EmitAssembly; break; 900 case OPT_emit_llvm_bc: 901 Opts.ProgramAction = frontend::EmitBC; break; 902 case OPT_emit_html: 903 Opts.ProgramAction = frontend::EmitHTML; break; 904 case OPT_emit_llvm: 905 Opts.ProgramAction = frontend::EmitLLVM; break; 906 case OPT_emit_llvm_only: 907 Opts.ProgramAction = frontend::EmitLLVMOnly; break; 908 case OPT_emit_codegen_only: 909 Opts.ProgramAction = frontend::EmitCodeGenOnly; break; 910 case OPT_emit_obj: 911 Opts.ProgramAction = frontend::EmitObj; break; 912 case OPT_fixit_EQ: 913 Opts.FixItSuffix = A->getValue(); 914 // fall-through! 915 case OPT_fixit: 916 Opts.ProgramAction = frontend::FixIt; break; 917 case OPT_emit_module: 918 Opts.ProgramAction = frontend::GenerateModule; break; 919 case OPT_emit_pch: 920 Opts.ProgramAction = frontend::GeneratePCH; break; 921 case OPT_emit_pth: 922 Opts.ProgramAction = frontend::GeneratePTH; break; 923 case OPT_init_only: 924 Opts.ProgramAction = frontend::InitOnly; break; 925 case OPT_fsyntax_only: 926 Opts.ProgramAction = frontend::ParseSyntaxOnly; break; 927 case OPT_module_file_info: 928 Opts.ProgramAction = frontend::ModuleFileInfo; break; 929 case OPT_verify_pch: 930 Opts.ProgramAction = frontend::VerifyPCH; break; 931 case OPT_print_decl_contexts: 932 Opts.ProgramAction = frontend::PrintDeclContext; break; 933 case OPT_print_preamble: 934 Opts.ProgramAction = frontend::PrintPreamble; break; 935 case OPT_E: 936 Opts.ProgramAction = frontend::PrintPreprocessedInput; break; 937 case OPT_rewrite_macros: 938 Opts.ProgramAction = frontend::RewriteMacros; break; 939 case OPT_rewrite_objc: 940 Opts.ProgramAction = frontend::RewriteObjC; break; 941 case OPT_rewrite_test: 942 Opts.ProgramAction = frontend::RewriteTest; break; 943 case OPT_analyze: 944 Opts.ProgramAction = frontend::RunAnalysis; break; 945 case OPT_migrate: 946 Opts.ProgramAction = frontend::MigrateSource; break; 947 case OPT_Eonly: 948 Opts.ProgramAction = frontend::RunPreprocessorOnly; break; 949 } 950 } 951 952 if (const Arg* A = Args.getLastArg(OPT_plugin)) { 953 Opts.Plugins.emplace_back(A->getValue(0)); 954 Opts.ProgramAction = frontend::PluginAction; 955 Opts.ActionName = A->getValue(); 956 957 for (const Arg *AA : Args.filtered(OPT_plugin_arg)) 958 if (AA->getValue(0) == Opts.ActionName) 959 Opts.PluginArgs.emplace_back(AA->getValue(1)); 960 } 961 962 Opts.AddPluginActions = Args.getAllArgValues(OPT_add_plugin); 963 Opts.AddPluginArgs.resize(Opts.AddPluginActions.size()); 964 for (int i = 0, e = Opts.AddPluginActions.size(); i != e; ++i) 965 for (const Arg *A : Args.filtered(OPT_plugin_arg)) 966 if (A->getValue(0) == Opts.AddPluginActions[i]) 967 Opts.AddPluginArgs[i].emplace_back(A->getValue(1)); 968 969 for (const std::string &Arg : 970 Args.getAllArgValues(OPT_ftest_module_file_extension_EQ)) { 971 std::string BlockName; 972 unsigned MajorVersion; 973 unsigned MinorVersion; 974 bool Hashed; 975 std::string UserInfo; 976 if (parseTestModuleFileExtensionArg(Arg, BlockName, MajorVersion, 977 MinorVersion, Hashed, UserInfo)) { 978 Diags.Report(diag::err_test_module_file_extension_format) << Arg; 979 980 continue; 981 } 982 983 // Add the testing module file extension. 984 Opts.ModuleFileExtensions.push_back( 985 new TestModuleFileExtension(BlockName, MajorVersion, MinorVersion, 986 Hashed, UserInfo)); 987 } 988 989 if (const Arg *A = Args.getLastArg(OPT_code_completion_at)) { 990 Opts.CodeCompletionAt = 991 ParsedSourceLocation::FromString(A->getValue()); 992 if (Opts.CodeCompletionAt.FileName.empty()) 993 Diags.Report(diag::err_drv_invalid_value) 994 << A->getAsString(Args) << A->getValue(); 995 } 996 Opts.DisableFree = Args.hasArg(OPT_disable_free); 997 998 Opts.OutputFile = Args.getLastArgValue(OPT_o); 999 Opts.Plugins = Args.getAllArgValues(OPT_load); 1000 Opts.RelocatablePCH = Args.hasArg(OPT_relocatable_pch); 1001 Opts.ShowHelp = Args.hasArg(OPT_help); 1002 Opts.ShowStats = Args.hasArg(OPT_print_stats); 1003 Opts.ShowTimers = Args.hasArg(OPT_ftime_report); 1004 Opts.ShowVersion = Args.hasArg(OPT_version); 1005 Opts.ASTMergeFiles = Args.getAllArgValues(OPT_ast_merge); 1006 Opts.LLVMArgs = Args.getAllArgValues(OPT_mllvm); 1007 Opts.FixWhatYouCan = Args.hasArg(OPT_fix_what_you_can); 1008 Opts.FixOnlyWarnings = Args.hasArg(OPT_fix_only_warnings); 1009 Opts.FixAndRecompile = Args.hasArg(OPT_fixit_recompile); 1010 Opts.FixToTemporaries = Args.hasArg(OPT_fixit_to_temp); 1011 Opts.ASTDumpDecls = Args.hasArg(OPT_ast_dump); 1012 Opts.ASTDumpFilter = Args.getLastArgValue(OPT_ast_dump_filter); 1013 Opts.ASTDumpLookups = Args.hasArg(OPT_ast_dump_lookups); 1014 Opts.UseGlobalModuleIndex = !Args.hasArg(OPT_fno_modules_global_index); 1015 Opts.GenerateGlobalModuleIndex = Opts.UseGlobalModuleIndex; 1016 Opts.ModuleMapFiles = Args.getAllArgValues(OPT_fmodule_map_file); 1017 Opts.ModuleFiles = Args.getAllArgValues(OPT_fmodule_file); 1018 Opts.ModulesEmbedFiles = Args.getAllArgValues(OPT_fmodules_embed_file_EQ); 1019 Opts.ModulesEmbedAllFiles = Args.hasArg(OPT_fmodules_embed_all_files); 1020 1021 Opts.CodeCompleteOpts.IncludeMacros 1022 = Args.hasArg(OPT_code_completion_macros); 1023 Opts.CodeCompleteOpts.IncludeCodePatterns 1024 = Args.hasArg(OPT_code_completion_patterns); 1025 Opts.CodeCompleteOpts.IncludeGlobals 1026 = !Args.hasArg(OPT_no_code_completion_globals); 1027 Opts.CodeCompleteOpts.IncludeBriefComments 1028 = Args.hasArg(OPT_code_completion_brief_comments); 1029 1030 Opts.OverrideRecordLayoutsFile 1031 = Args.getLastArgValue(OPT_foverride_record_layout_EQ); 1032 Opts.AuxTriple = 1033 llvm::Triple::normalize(Args.getLastArgValue(OPT_aux_triple)); 1034 1035 if (const Arg *A = Args.getLastArg(OPT_arcmt_check, 1036 OPT_arcmt_modify, 1037 OPT_arcmt_migrate)) { 1038 switch (A->getOption().getID()) { 1039 default: 1040 llvm_unreachable("missed a case"); 1041 case OPT_arcmt_check: 1042 Opts.ARCMTAction = FrontendOptions::ARCMT_Check; 1043 break; 1044 case OPT_arcmt_modify: 1045 Opts.ARCMTAction = FrontendOptions::ARCMT_Modify; 1046 break; 1047 case OPT_arcmt_migrate: 1048 Opts.ARCMTAction = FrontendOptions::ARCMT_Migrate; 1049 break; 1050 } 1051 } 1052 Opts.MTMigrateDir = Args.getLastArgValue(OPT_mt_migrate_directory); 1053 Opts.ARCMTMigrateReportOut 1054 = Args.getLastArgValue(OPT_arcmt_migrate_report_output); 1055 Opts.ARCMTMigrateEmitARCErrors 1056 = Args.hasArg(OPT_arcmt_migrate_emit_arc_errors); 1057 1058 if (Args.hasArg(OPT_objcmt_migrate_literals)) 1059 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_Literals; 1060 if (Args.hasArg(OPT_objcmt_migrate_subscripting)) 1061 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_Subscripting; 1062 if (Args.hasArg(OPT_objcmt_migrate_property_dot_syntax)) 1063 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_PropertyDotSyntax; 1064 if (Args.hasArg(OPT_objcmt_migrate_property)) 1065 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_Property; 1066 if (Args.hasArg(OPT_objcmt_migrate_readonly_property)) 1067 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_ReadonlyProperty; 1068 if (Args.hasArg(OPT_objcmt_migrate_readwrite_property)) 1069 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_ReadwriteProperty; 1070 if (Args.hasArg(OPT_objcmt_migrate_annotation)) 1071 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_Annotation; 1072 if (Args.hasArg(OPT_objcmt_returns_innerpointer_property)) 1073 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_ReturnsInnerPointerProperty; 1074 if (Args.hasArg(OPT_objcmt_migrate_instancetype)) 1075 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_Instancetype; 1076 if (Args.hasArg(OPT_objcmt_migrate_nsmacros)) 1077 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_NsMacros; 1078 if (Args.hasArg(OPT_objcmt_migrate_protocol_conformance)) 1079 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_ProtocolConformance; 1080 if (Args.hasArg(OPT_objcmt_atomic_property)) 1081 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_AtomicProperty; 1082 if (Args.hasArg(OPT_objcmt_ns_nonatomic_iosonly)) 1083 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_NsAtomicIOSOnlyProperty; 1084 if (Args.hasArg(OPT_objcmt_migrate_designated_init)) 1085 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_DesignatedInitializer; 1086 if (Args.hasArg(OPT_objcmt_migrate_all)) 1087 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_MigrateDecls; 1088 1089 Opts.ObjCMTWhiteListPath = Args.getLastArgValue(OPT_objcmt_whitelist_dir_path); 1090 1091 if (Opts.ARCMTAction != FrontendOptions::ARCMT_None && 1092 Opts.ObjCMTAction != FrontendOptions::ObjCMT_None) { 1093 Diags.Report(diag::err_drv_argument_not_allowed_with) 1094 << "ARC migration" << "ObjC migration"; 1095 } 1096 1097 InputKind DashX = IK_None; 1098 if (const Arg *A = Args.getLastArg(OPT_x)) { 1099 DashX = llvm::StringSwitch<InputKind>(A->getValue()) 1100 .Case("c", IK_C) 1101 .Case("cl", IK_OpenCL) 1102 .Case("cuda", IK_CUDA) 1103 .Case("c++", IK_CXX) 1104 .Case("objective-c", IK_ObjC) 1105 .Case("objective-c++", IK_ObjCXX) 1106 .Case("cpp-output", IK_PreprocessedC) 1107 .Case("assembler-with-cpp", IK_Asm) 1108 .Case("c++-cpp-output", IK_PreprocessedCXX) 1109 .Case("cuda-cpp-output", IK_PreprocessedCuda) 1110 .Case("objective-c-cpp-output", IK_PreprocessedObjC) 1111 .Case("objc-cpp-output", IK_PreprocessedObjC) 1112 .Case("objective-c++-cpp-output", IK_PreprocessedObjCXX) 1113 .Case("objc++-cpp-output", IK_PreprocessedObjCXX) 1114 .Case("c-header", IK_C) 1115 .Case("cl-header", IK_OpenCL) 1116 .Case("objective-c-header", IK_ObjC) 1117 .Case("c++-header", IK_CXX) 1118 .Case("objective-c++-header", IK_ObjCXX) 1119 .Cases("ast", "pcm", IK_AST) 1120 .Case("ir", IK_LLVM_IR) 1121 .Default(IK_None); 1122 if (DashX == IK_None) 1123 Diags.Report(diag::err_drv_invalid_value) 1124 << A->getAsString(Args) << A->getValue(); 1125 } 1126 1127 // '-' is the default input if none is given. 1128 std::vector<std::string> Inputs = Args.getAllArgValues(OPT_INPUT); 1129 Opts.Inputs.clear(); 1130 if (Inputs.empty()) 1131 Inputs.push_back("-"); 1132 for (unsigned i = 0, e = Inputs.size(); i != e; ++i) { 1133 InputKind IK = DashX; 1134 if (IK == IK_None) { 1135 IK = FrontendOptions::getInputKindForExtension( 1136 StringRef(Inputs[i]).rsplit('.').second); 1137 // FIXME: Remove this hack. 1138 if (i == 0) 1139 DashX = IK; 1140 } 1141 Opts.Inputs.emplace_back(std::move(Inputs[i]), IK); 1142 } 1143 1144 return DashX; 1145 } 1146 1147 std::string CompilerInvocation::GetResourcesPath(const char *Argv0, 1148 void *MainAddr) { 1149 std::string ClangExecutable = 1150 llvm::sys::fs::getMainExecutable(Argv0, MainAddr); 1151 StringRef Dir = llvm::sys::path::parent_path(ClangExecutable); 1152 1153 // Compute the path to the resource directory. 1154 StringRef ClangResourceDir(CLANG_RESOURCE_DIR); 1155 SmallString<128> P(Dir); 1156 if (ClangResourceDir != "") 1157 llvm::sys::path::append(P, ClangResourceDir); 1158 else 1159 llvm::sys::path::append(P, "..", Twine("lib") + CLANG_LIBDIR_SUFFIX, 1160 "clang", CLANG_VERSION_STRING); 1161 1162 return P.str(); 1163 } 1164 1165 static void ParseHeaderSearchArgs(HeaderSearchOptions &Opts, ArgList &Args) { 1166 using namespace options; 1167 Opts.Sysroot = Args.getLastArgValue(OPT_isysroot, "/"); 1168 Opts.Verbose = Args.hasArg(OPT_v); 1169 Opts.UseBuiltinIncludes = !Args.hasArg(OPT_nobuiltininc); 1170 Opts.UseStandardSystemIncludes = !Args.hasArg(OPT_nostdsysteminc); 1171 Opts.UseStandardCXXIncludes = !Args.hasArg(OPT_nostdincxx); 1172 if (const Arg *A = Args.getLastArg(OPT_stdlib_EQ)) 1173 Opts.UseLibcxx = (strcmp(A->getValue(), "libc++") == 0); 1174 Opts.ResourceDir = Args.getLastArgValue(OPT_resource_dir); 1175 Opts.ModuleCachePath = Args.getLastArgValue(OPT_fmodules_cache_path); 1176 Opts.ModuleUserBuildPath = Args.getLastArgValue(OPT_fmodules_user_build_path); 1177 Opts.DisableModuleHash = Args.hasArg(OPT_fdisable_module_hash); 1178 Opts.ImplicitModuleMaps = Args.hasArg(OPT_fimplicit_module_maps); 1179 Opts.ModuleMapFileHomeIsCwd = Args.hasArg(OPT_fmodule_map_file_home_is_cwd); 1180 Opts.ModuleCachePruneInterval = 1181 getLastArgIntValue(Args, OPT_fmodules_prune_interval, 7 * 24 * 60 * 60); 1182 Opts.ModuleCachePruneAfter = 1183 getLastArgIntValue(Args, OPT_fmodules_prune_after, 31 * 24 * 60 * 60); 1184 Opts.ModulesValidateOncePerBuildSession = 1185 Args.hasArg(OPT_fmodules_validate_once_per_build_session); 1186 Opts.BuildSessionTimestamp = 1187 getLastArgUInt64Value(Args, OPT_fbuild_session_timestamp, 0); 1188 Opts.ModulesValidateSystemHeaders = 1189 Args.hasArg(OPT_fmodules_validate_system_headers); 1190 if (const Arg *A = Args.getLastArg(OPT_fmodule_format_EQ)) 1191 Opts.ModuleFormat = A->getValue(); 1192 1193 for (const Arg *A : Args.filtered(OPT_fmodules_ignore_macro)) { 1194 StringRef MacroDef = A->getValue(); 1195 Opts.ModulesIgnoreMacros.insert(MacroDef.split('=').first); 1196 } 1197 1198 // Add -I..., -F..., and -index-header-map options in order. 1199 bool IsIndexHeaderMap = false; 1200 for (const Arg *A : Args.filtered(OPT_I, OPT_F, OPT_index_header_map)) { 1201 if (A->getOption().matches(OPT_index_header_map)) { 1202 // -index-header-map applies to the next -I or -F. 1203 IsIndexHeaderMap = true; 1204 continue; 1205 } 1206 1207 frontend::IncludeDirGroup Group = 1208 IsIndexHeaderMap ? frontend::IndexHeaderMap : frontend::Angled; 1209 1210 Opts.AddPath(A->getValue(), Group, 1211 /*IsFramework=*/A->getOption().matches(OPT_F), true); 1212 IsIndexHeaderMap = false; 1213 } 1214 1215 // Add -iprefix/-iwithprefix/-iwithprefixbefore options. 1216 StringRef Prefix = ""; // FIXME: This isn't the correct default prefix. 1217 for (const Arg *A : 1218 Args.filtered(OPT_iprefix, OPT_iwithprefix, OPT_iwithprefixbefore)) { 1219 if (A->getOption().matches(OPT_iprefix)) 1220 Prefix = A->getValue(); 1221 else if (A->getOption().matches(OPT_iwithprefix)) 1222 Opts.AddPath(Prefix.str() + A->getValue(), frontend::After, false, true); 1223 else 1224 Opts.AddPath(Prefix.str() + A->getValue(), frontend::Angled, false, true); 1225 } 1226 1227 for (const Arg *A : Args.filtered(OPT_idirafter)) 1228 Opts.AddPath(A->getValue(), frontend::After, false, true); 1229 for (const Arg *A : Args.filtered(OPT_iquote)) 1230 Opts.AddPath(A->getValue(), frontend::Quoted, false, true); 1231 for (const Arg *A : Args.filtered(OPT_isystem, OPT_iwithsysroot)) 1232 Opts.AddPath(A->getValue(), frontend::System, false, 1233 !A->getOption().matches(OPT_iwithsysroot)); 1234 for (const Arg *A : Args.filtered(OPT_iframework)) 1235 Opts.AddPath(A->getValue(), frontend::System, true, true); 1236 1237 // Add the paths for the various language specific isystem flags. 1238 for (const Arg *A : Args.filtered(OPT_c_isystem)) 1239 Opts.AddPath(A->getValue(), frontend::CSystem, false, true); 1240 for (const Arg *A : Args.filtered(OPT_cxx_isystem)) 1241 Opts.AddPath(A->getValue(), frontend::CXXSystem, false, true); 1242 for (const Arg *A : Args.filtered(OPT_objc_isystem)) 1243 Opts.AddPath(A->getValue(), frontend::ObjCSystem, false,true); 1244 for (const Arg *A : Args.filtered(OPT_objcxx_isystem)) 1245 Opts.AddPath(A->getValue(), frontend::ObjCXXSystem, false, true); 1246 1247 // Add the internal paths from a driver that detects standard include paths. 1248 for (const Arg *A : 1249 Args.filtered(OPT_internal_isystem, OPT_internal_externc_isystem)) { 1250 frontend::IncludeDirGroup Group = frontend::System; 1251 if (A->getOption().matches(OPT_internal_externc_isystem)) 1252 Group = frontend::ExternCSystem; 1253 Opts.AddPath(A->getValue(), Group, false, true); 1254 } 1255 1256 // Add the path prefixes which are implicitly treated as being system headers. 1257 for (const Arg *A : 1258 Args.filtered(OPT_system_header_prefix, OPT_no_system_header_prefix)) 1259 Opts.AddSystemHeaderPrefix( 1260 A->getValue(), A->getOption().matches(OPT_system_header_prefix)); 1261 1262 for (const Arg *A : Args.filtered(OPT_ivfsoverlay)) 1263 Opts.AddVFSOverlayFile(A->getValue()); 1264 } 1265 1266 void CompilerInvocation::setLangDefaults(LangOptions &Opts, InputKind IK, 1267 LangStandard::Kind LangStd) { 1268 // Set some properties which depend solely on the input kind; it would be nice 1269 // to move these to the language standard, and have the driver resolve the 1270 // input kind + language standard. 1271 if (IK == IK_Asm) { 1272 Opts.AsmPreprocessor = 1; 1273 } else if (IK == IK_ObjC || 1274 IK == IK_ObjCXX || 1275 IK == IK_PreprocessedObjC || 1276 IK == IK_PreprocessedObjCXX) { 1277 Opts.ObjC1 = Opts.ObjC2 = 1; 1278 } 1279 1280 if (LangStd == LangStandard::lang_unspecified) { 1281 // Based on the base language, pick one. 1282 switch (IK) { 1283 case IK_None: 1284 case IK_AST: 1285 case IK_LLVM_IR: 1286 llvm_unreachable("Invalid input kind!"); 1287 case IK_OpenCL: 1288 LangStd = LangStandard::lang_opencl; 1289 break; 1290 case IK_CUDA: 1291 case IK_PreprocessedCuda: 1292 LangStd = LangStandard::lang_cuda; 1293 break; 1294 case IK_Asm: 1295 case IK_C: 1296 case IK_PreprocessedC: 1297 case IK_ObjC: 1298 case IK_PreprocessedObjC: 1299 LangStd = LangStandard::lang_gnu11; 1300 break; 1301 case IK_CXX: 1302 case IK_PreprocessedCXX: 1303 case IK_ObjCXX: 1304 case IK_PreprocessedObjCXX: 1305 LangStd = LangStandard::lang_gnucxx98; 1306 break; 1307 } 1308 } 1309 1310 const LangStandard &Std = LangStandard::getLangStandardForKind(LangStd); 1311 Opts.LineComment = Std.hasLineComments(); 1312 Opts.C99 = Std.isC99(); 1313 Opts.C11 = Std.isC11(); 1314 Opts.CPlusPlus = Std.isCPlusPlus(); 1315 Opts.CPlusPlus11 = Std.isCPlusPlus11(); 1316 Opts.CPlusPlus14 = Std.isCPlusPlus14(); 1317 Opts.CPlusPlus1z = Std.isCPlusPlus1z(); 1318 Opts.Digraphs = Std.hasDigraphs(); 1319 Opts.GNUMode = Std.isGNUMode(); 1320 Opts.GNUInline = Std.isC89(); 1321 Opts.HexFloats = Std.hasHexFloats(); 1322 Opts.ImplicitInt = Std.hasImplicitInt(); 1323 1324 // Set OpenCL Version. 1325 Opts.OpenCL = LangStd == LangStandard::lang_opencl || IK == IK_OpenCL; 1326 if (LangStd == LangStandard::lang_opencl) 1327 Opts.OpenCLVersion = 100; 1328 else if (LangStd == LangStandard::lang_opencl11) 1329 Opts.OpenCLVersion = 110; 1330 else if (LangStd == LangStandard::lang_opencl12) 1331 Opts.OpenCLVersion = 120; 1332 else if (LangStd == LangStandard::lang_opencl20) 1333 Opts.OpenCLVersion = 200; 1334 1335 // OpenCL has some additional defaults. 1336 if (Opts.OpenCL) { 1337 Opts.AltiVec = 0; 1338 Opts.ZVector = 0; 1339 Opts.CXXOperatorNames = 1; 1340 Opts.LaxVectorConversions = 0; 1341 Opts.DefaultFPContract = 1; 1342 Opts.NativeHalfType = 1; 1343 } 1344 1345 Opts.CUDA = IK == IK_CUDA || IK == IK_PreprocessedCuda || 1346 LangStd == LangStandard::lang_cuda; 1347 1348 // OpenCL and C++ both have bool, true, false keywords. 1349 Opts.Bool = Opts.OpenCL || Opts.CPlusPlus; 1350 1351 // OpenCL has half keyword 1352 Opts.Half = Opts.OpenCL; 1353 1354 // C++ has wchar_t keyword. 1355 Opts.WChar = Opts.CPlusPlus; 1356 1357 Opts.GNUKeywords = Opts.GNUMode; 1358 Opts.CXXOperatorNames = Opts.CPlusPlus; 1359 1360 Opts.DollarIdents = !Opts.AsmPreprocessor; 1361 } 1362 1363 /// Attempt to parse a visibility value out of the given argument. 1364 static Visibility parseVisibility(Arg *arg, ArgList &args, 1365 DiagnosticsEngine &diags) { 1366 StringRef value = arg->getValue(); 1367 if (value == "default") { 1368 return DefaultVisibility; 1369 } else if (value == "hidden" || value == "internal") { 1370 return HiddenVisibility; 1371 } else if (value == "protected") { 1372 // FIXME: diagnose if target does not support protected visibility 1373 return ProtectedVisibility; 1374 } 1375 1376 diags.Report(diag::err_drv_invalid_value) 1377 << arg->getAsString(args) << value; 1378 return DefaultVisibility; 1379 } 1380 1381 static void ParseLangArgs(LangOptions &Opts, ArgList &Args, InputKind IK, 1382 DiagnosticsEngine &Diags) { 1383 // FIXME: Cleanup per-file based stuff. 1384 LangStandard::Kind LangStd = LangStandard::lang_unspecified; 1385 if (const Arg *A = Args.getLastArg(OPT_std_EQ)) { 1386 LangStd = llvm::StringSwitch<LangStandard::Kind>(A->getValue()) 1387 #define LANGSTANDARD(id, name, desc, features) \ 1388 .Case(name, LangStandard::lang_##id) 1389 #include "clang/Frontend/LangStandards.def" 1390 .Default(LangStandard::lang_unspecified); 1391 if (LangStd == LangStandard::lang_unspecified) 1392 Diags.Report(diag::err_drv_invalid_value) 1393 << A->getAsString(Args) << A->getValue(); 1394 else { 1395 // Valid standard, check to make sure language and standard are 1396 // compatible. 1397 const LangStandard &Std = LangStandard::getLangStandardForKind(LangStd); 1398 switch (IK) { 1399 case IK_C: 1400 case IK_ObjC: 1401 case IK_PreprocessedC: 1402 case IK_PreprocessedObjC: 1403 if (!(Std.isC89() || Std.isC99())) 1404 Diags.Report(diag::err_drv_argument_not_allowed_with) 1405 << A->getAsString(Args) << "C/ObjC"; 1406 break; 1407 case IK_CXX: 1408 case IK_ObjCXX: 1409 case IK_PreprocessedCXX: 1410 case IK_PreprocessedObjCXX: 1411 if (!Std.isCPlusPlus()) 1412 Diags.Report(diag::err_drv_argument_not_allowed_with) 1413 << A->getAsString(Args) << "C++/ObjC++"; 1414 break; 1415 case IK_OpenCL: 1416 if (!Std.isC99()) 1417 Diags.Report(diag::err_drv_argument_not_allowed_with) 1418 << A->getAsString(Args) << "OpenCL"; 1419 break; 1420 case IK_CUDA: 1421 case IK_PreprocessedCuda: 1422 if (!Std.isCPlusPlus()) 1423 Diags.Report(diag::err_drv_argument_not_allowed_with) 1424 << A->getAsString(Args) << "CUDA"; 1425 break; 1426 default: 1427 break; 1428 } 1429 } 1430 } 1431 1432 // -cl-std only applies for OpenCL language standards. 1433 // Override the -std option in this case. 1434 if (const Arg *A = Args.getLastArg(OPT_cl_std_EQ)) { 1435 LangStandard::Kind OpenCLLangStd 1436 = llvm::StringSwitch<LangStandard::Kind>(A->getValue()) 1437 .Case("CL", LangStandard::lang_opencl) 1438 .Case("CL1.1", LangStandard::lang_opencl11) 1439 .Case("CL1.2", LangStandard::lang_opencl12) 1440 .Case("CL2.0", LangStandard::lang_opencl20) 1441 .Default(LangStandard::lang_unspecified); 1442 1443 if (OpenCLLangStd == LangStandard::lang_unspecified) { 1444 Diags.Report(diag::err_drv_invalid_value) 1445 << A->getAsString(Args) << A->getValue(); 1446 } 1447 else 1448 LangStd = OpenCLLangStd; 1449 } 1450 1451 CompilerInvocation::setLangDefaults(Opts, IK, LangStd); 1452 1453 // We abuse '-f[no-]gnu-keywords' to force overriding all GNU-extension 1454 // keywords. This behavior is provided by GCC's poorly named '-fasm' flag, 1455 // while a subset (the non-C++ GNU keywords) is provided by GCC's 1456 // '-fgnu-keywords'. Clang conflates the two for simplicity under the single 1457 // name, as it doesn't seem a useful distinction. 1458 Opts.GNUKeywords = Args.hasFlag(OPT_fgnu_keywords, OPT_fno_gnu_keywords, 1459 Opts.GNUKeywords); 1460 1461 if (Args.hasArg(OPT_fno_operator_names)) 1462 Opts.CXXOperatorNames = 0; 1463 1464 if (Args.hasArg(OPT_fcuda_is_device)) 1465 Opts.CUDAIsDevice = 1; 1466 1467 if (Args.hasArg(OPT_fcuda_allow_host_calls_from_host_device)) 1468 Opts.CUDAAllowHostCallsFromHostDevice = 1; 1469 1470 if (Args.hasArg(OPT_fcuda_disable_target_call_checks)) 1471 Opts.CUDADisableTargetCallChecks = 1; 1472 1473 if (Args.hasArg(OPT_fcuda_target_overloads)) 1474 Opts.CUDATargetOverloads = 1; 1475 1476 if (Opts.ObjC1) { 1477 if (Arg *arg = Args.getLastArg(OPT_fobjc_runtime_EQ)) { 1478 StringRef value = arg->getValue(); 1479 if (Opts.ObjCRuntime.tryParse(value)) 1480 Diags.Report(diag::err_drv_unknown_objc_runtime) << value; 1481 } 1482 1483 if (Args.hasArg(OPT_fobjc_gc_only)) 1484 Opts.setGC(LangOptions::GCOnly); 1485 else if (Args.hasArg(OPT_fobjc_gc)) 1486 Opts.setGC(LangOptions::HybridGC); 1487 else if (Args.hasArg(OPT_fobjc_arc)) { 1488 Opts.ObjCAutoRefCount = 1; 1489 if (!Opts.ObjCRuntime.allowsARC()) 1490 Diags.Report(diag::err_arc_unsupported_on_runtime); 1491 } 1492 1493 // ObjCWeakRuntime tracks whether the runtime supports __weak, not 1494 // whether the feature is actually enabled. This is predominantly 1495 // determined by -fobjc-runtime, but we allow it to be overridden 1496 // from the command line for testing purposes. 1497 if (Args.hasArg(OPT_fobjc_runtime_has_weak)) 1498 Opts.ObjCWeakRuntime = 1; 1499 else 1500 Opts.ObjCWeakRuntime = Opts.ObjCRuntime.allowsWeak(); 1501 1502 // ObjCWeak determines whether __weak is actually enabled. 1503 // Note that we allow -fno-objc-weak to disable this even in ARC mode. 1504 if (auto weakArg = Args.getLastArg(OPT_fobjc_weak, OPT_fno_objc_weak)) { 1505 if (!weakArg->getOption().matches(OPT_fobjc_weak)) { 1506 assert(!Opts.ObjCWeak); 1507 } else if (Opts.getGC() != LangOptions::NonGC) { 1508 Diags.Report(diag::err_objc_weak_with_gc); 1509 } else if (!Opts.ObjCWeakRuntime) { 1510 Diags.Report(diag::err_objc_weak_unsupported); 1511 } else { 1512 Opts.ObjCWeak = 1; 1513 } 1514 } else if (Opts.ObjCAutoRefCount) { 1515 Opts.ObjCWeak = Opts.ObjCWeakRuntime; 1516 } 1517 1518 if (Args.hasArg(OPT_fno_objc_infer_related_result_type)) 1519 Opts.ObjCInferRelatedResultType = 0; 1520 1521 if (Args.hasArg(OPT_fobjc_subscripting_legacy_runtime)) 1522 Opts.ObjCSubscriptingLegacyRuntime = 1523 (Opts.ObjCRuntime.getKind() == ObjCRuntime::FragileMacOSX); 1524 } 1525 1526 if (Args.hasArg(OPT_fgnu89_inline)) { 1527 if (Opts.CPlusPlus) 1528 Diags.Report(diag::err_drv_argument_not_allowed_with) << "-fgnu89-inline" 1529 << "C++/ObjC++"; 1530 else 1531 Opts.GNUInline = 1; 1532 } 1533 1534 if (Args.hasArg(OPT_fapple_kext)) { 1535 if (!Opts.CPlusPlus) 1536 Diags.Report(diag::warn_c_kext); 1537 else 1538 Opts.AppleKext = 1; 1539 } 1540 1541 if (Args.hasArg(OPT_print_ivar_layout)) 1542 Opts.ObjCGCBitmapPrint = 1; 1543 if (Args.hasArg(OPT_fno_constant_cfstrings)) 1544 Opts.NoConstantCFStrings = 1; 1545 1546 if (Args.hasArg(OPT_faltivec)) 1547 Opts.AltiVec = 1; 1548 1549 if (Args.hasArg(OPT_fzvector)) 1550 Opts.ZVector = 1; 1551 1552 if (Args.hasArg(OPT_pthread)) 1553 Opts.POSIXThreads = 1; 1554 1555 // The value-visibility mode defaults to "default". 1556 if (Arg *visOpt = Args.getLastArg(OPT_fvisibility)) { 1557 Opts.setValueVisibilityMode(parseVisibility(visOpt, Args, Diags)); 1558 } else { 1559 Opts.setValueVisibilityMode(DefaultVisibility); 1560 } 1561 1562 // The type-visibility mode defaults to the value-visibility mode. 1563 if (Arg *typeVisOpt = Args.getLastArg(OPT_ftype_visibility)) { 1564 Opts.setTypeVisibilityMode(parseVisibility(typeVisOpt, Args, Diags)); 1565 } else { 1566 Opts.setTypeVisibilityMode(Opts.getValueVisibilityMode()); 1567 } 1568 1569 if (Args.hasArg(OPT_fvisibility_inlines_hidden)) 1570 Opts.InlineVisibilityHidden = 1; 1571 1572 if (Args.hasArg(OPT_ftrapv)) { 1573 Opts.setSignedOverflowBehavior(LangOptions::SOB_Trapping); 1574 // Set the handler, if one is specified. 1575 Opts.OverflowHandler = 1576 Args.getLastArgValue(OPT_ftrapv_handler); 1577 } 1578 else if (Args.hasArg(OPT_fwrapv)) 1579 Opts.setSignedOverflowBehavior(LangOptions::SOB_Defined); 1580 1581 Opts.MSVCCompat = Args.hasArg(OPT_fms_compatibility); 1582 Opts.MicrosoftExt = Opts.MSVCCompat || Args.hasArg(OPT_fms_extensions); 1583 Opts.AsmBlocks = Args.hasArg(OPT_fasm_blocks) || Opts.MicrosoftExt; 1584 Opts.MSCompatibilityVersion = 0; 1585 if (const Arg *A = Args.getLastArg(OPT_fms_compatibility_version)) { 1586 VersionTuple VT; 1587 if (VT.tryParse(A->getValue())) 1588 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) 1589 << A->getValue(); 1590 Opts.MSCompatibilityVersion = VT.getMajor() * 10000000 + 1591 VT.getMinor().getValueOr(0) * 100000 + 1592 VT.getSubminor().getValueOr(0); 1593 } 1594 1595 // Mimicing gcc's behavior, trigraphs are only enabled if -trigraphs 1596 // is specified, or -std is set to a conforming mode. 1597 // Trigraphs are disabled by default in c++1z onwards. 1598 Opts.Trigraphs = !Opts.GNUMode && !Opts.MSVCCompat && !Opts.CPlusPlus1z; 1599 Opts.Trigraphs = 1600 Args.hasFlag(OPT_ftrigraphs, OPT_fno_trigraphs, Opts.Trigraphs); 1601 1602 Opts.DollarIdents = Args.hasFlag(OPT_fdollars_in_identifiers, 1603 OPT_fno_dollars_in_identifiers, 1604 Opts.DollarIdents); 1605 Opts.PascalStrings = Args.hasArg(OPT_fpascal_strings); 1606 Opts.VtorDispMode = getLastArgIntValue(Args, OPT_vtordisp_mode_EQ, 1, Diags); 1607 Opts.Borland = Args.hasArg(OPT_fborland_extensions); 1608 Opts.WritableStrings = Args.hasArg(OPT_fwritable_strings); 1609 Opts.ConstStrings = Args.hasFlag(OPT_fconst_strings, OPT_fno_const_strings, 1610 Opts.ConstStrings); 1611 if (Args.hasArg(OPT_fno_lax_vector_conversions)) 1612 Opts.LaxVectorConversions = 0; 1613 if (Args.hasArg(OPT_fno_threadsafe_statics)) 1614 Opts.ThreadsafeStatics = 0; 1615 Opts.Exceptions = Args.hasArg(OPT_fexceptions); 1616 Opts.ObjCExceptions = Args.hasArg(OPT_fobjc_exceptions); 1617 Opts.CXXExceptions = Args.hasArg(OPT_fcxx_exceptions); 1618 Opts.SjLjExceptions = Args.hasArg(OPT_fsjlj_exceptions); 1619 Opts.TraditionalCPP = Args.hasArg(OPT_traditional_cpp); 1620 1621 Opts.RTTI = !Args.hasArg(OPT_fno_rtti); 1622 Opts.RTTIData = Opts.RTTI && !Args.hasArg(OPT_fno_rtti_data); 1623 Opts.Blocks = Args.hasArg(OPT_fblocks); 1624 Opts.BlocksRuntimeOptional = Args.hasArg(OPT_fblocks_runtime_optional); 1625 Opts.Coroutines = Args.hasArg(OPT_fcoroutines); 1626 Opts.Modules = Args.hasArg(OPT_fmodules); 1627 Opts.ModulesStrictDeclUse = Args.hasArg(OPT_fmodules_strict_decluse); 1628 Opts.ModulesDeclUse = 1629 Args.hasArg(OPT_fmodules_decluse) || Opts.ModulesStrictDeclUse; 1630 Opts.ModulesLocalVisibility = 1631 Args.hasArg(OPT_fmodules_local_submodule_visibility); 1632 Opts.ModulesSearchAll = Opts.Modules && 1633 !Args.hasArg(OPT_fno_modules_search_all) && 1634 Args.hasArg(OPT_fmodules_search_all); 1635 Opts.ModulesErrorRecovery = !Args.hasArg(OPT_fno_modules_error_recovery); 1636 Opts.ImplicitModules = !Args.hasArg(OPT_fno_implicit_modules); 1637 Opts.CharIsSigned = Opts.OpenCL || !Args.hasArg(OPT_fno_signed_char); 1638 Opts.WChar = Opts.CPlusPlus && !Args.hasArg(OPT_fno_wchar); 1639 Opts.ShortWChar = Args.hasFlag(OPT_fshort_wchar, OPT_fno_short_wchar, false); 1640 Opts.ShortEnums = Args.hasArg(OPT_fshort_enums); 1641 Opts.Freestanding = Args.hasArg(OPT_ffreestanding); 1642 Opts.NoBuiltin = Args.hasArg(OPT_fno_builtin) || Opts.Freestanding; 1643 Opts.NoMathBuiltin = Args.hasArg(OPT_fno_math_builtin); 1644 Opts.AssumeSaneOperatorNew = !Args.hasArg(OPT_fno_assume_sane_operator_new); 1645 Opts.SizedDeallocation = Args.hasArg(OPT_fsized_deallocation); 1646 Opts.ConceptsTS = Args.hasArg(OPT_fconcepts_ts); 1647 Opts.HeinousExtensions = Args.hasArg(OPT_fheinous_gnu_extensions); 1648 Opts.AccessControl = !Args.hasArg(OPT_fno_access_control); 1649 Opts.ElideConstructors = !Args.hasArg(OPT_fno_elide_constructors); 1650 Opts.MathErrno = !Opts.OpenCL && Args.hasArg(OPT_fmath_errno); 1651 Opts.InstantiationDepth = 1652 getLastArgIntValue(Args, OPT_ftemplate_depth, 256, Diags); 1653 Opts.ArrowDepth = 1654 getLastArgIntValue(Args, OPT_foperator_arrow_depth, 256, Diags); 1655 Opts.ConstexprCallDepth = 1656 getLastArgIntValue(Args, OPT_fconstexpr_depth, 512, Diags); 1657 Opts.ConstexprStepLimit = 1658 getLastArgIntValue(Args, OPT_fconstexpr_steps, 1048576, Diags); 1659 Opts.BracketDepth = getLastArgIntValue(Args, OPT_fbracket_depth, 256, Diags); 1660 Opts.DelayedTemplateParsing = Args.hasArg(OPT_fdelayed_template_parsing); 1661 Opts.NumLargeByValueCopy = 1662 getLastArgIntValue(Args, OPT_Wlarge_by_value_copy_EQ, 0, Diags); 1663 Opts.MSBitfields = Args.hasArg(OPT_mms_bitfields); 1664 Opts.ObjCConstantStringClass = 1665 Args.getLastArgValue(OPT_fconstant_string_class); 1666 Opts.ObjCDefaultSynthProperties = 1667 !Args.hasArg(OPT_disable_objc_default_synthesize_properties); 1668 Opts.EncodeExtendedBlockSig = 1669 Args.hasArg(OPT_fencode_extended_block_signature); 1670 Opts.EmitAllDecls = Args.hasArg(OPT_femit_all_decls); 1671 Opts.PackStruct = getLastArgIntValue(Args, OPT_fpack_struct_EQ, 0, Diags); 1672 Opts.MaxTypeAlign = getLastArgIntValue(Args, OPT_fmax_type_align_EQ, 0, Diags); 1673 Opts.PICLevel = getLastArgIntValue(Args, OPT_pic_level, 0, Diags); 1674 Opts.PIELevel = getLastArgIntValue(Args, OPT_pie_level, 0, Diags); 1675 Opts.Static = Args.hasArg(OPT_static_define); 1676 Opts.DumpRecordLayoutsSimple = Args.hasArg(OPT_fdump_record_layouts_simple); 1677 Opts.DumpRecordLayouts = Opts.DumpRecordLayoutsSimple 1678 || Args.hasArg(OPT_fdump_record_layouts); 1679 Opts.DumpVTableLayouts = Args.hasArg(OPT_fdump_vtable_layouts); 1680 Opts.SpellChecking = !Args.hasArg(OPT_fno_spell_checking); 1681 Opts.NoBitFieldTypeAlign = Args.hasArg(OPT_fno_bitfield_type_align); 1682 Opts.SinglePrecisionConstants = Args.hasArg(OPT_cl_single_precision_constant); 1683 Opts.FastRelaxedMath = Args.hasArg(OPT_cl_fast_relaxed_math); 1684 Opts.MRTD = Args.hasArg(OPT_mrtd); 1685 Opts.HexagonQdsp6Compat = Args.hasArg(OPT_mqdsp6_compat); 1686 Opts.FakeAddressSpaceMap = Args.hasArg(OPT_ffake_address_space_map); 1687 Opts.ParseUnknownAnytype = Args.hasArg(OPT_funknown_anytype); 1688 Opts.DebuggerSupport = Args.hasArg(OPT_fdebugger_support); 1689 Opts.DebuggerCastResultToId = Args.hasArg(OPT_fdebugger_cast_result_to_id); 1690 Opts.DebuggerObjCLiteral = Args.hasArg(OPT_fdebugger_objc_literal); 1691 Opts.ApplePragmaPack = Args.hasArg(OPT_fapple_pragma_pack); 1692 Opts.CurrentModule = Args.getLastArgValue(OPT_fmodule_name); 1693 Opts.AppExt = Args.hasArg(OPT_fapplication_extension); 1694 Opts.ImplementationOfModule = 1695 Args.getLastArgValue(OPT_fmodule_implementation_of); 1696 Opts.ModuleFeatures = Args.getAllArgValues(OPT_fmodule_feature); 1697 std::sort(Opts.ModuleFeatures.begin(), Opts.ModuleFeatures.end()); 1698 Opts.NativeHalfType |= Args.hasArg(OPT_fnative_half_type); 1699 Opts.HalfArgsAndReturns = Args.hasArg(OPT_fallow_half_arguments_and_returns); 1700 Opts.GNUAsm = !Args.hasArg(OPT_fno_gnu_inline_asm); 1701 1702 // __declspec is enabled by default for the PS4 by the driver, and also 1703 // enabled for Microsoft Extensions or Borland Extensions, here. 1704 // 1705 // FIXME: __declspec is also currently enabled for CUDA, but isn't really a 1706 // CUDA extension, however it is required for supporting cuda_builtin_vars.h, 1707 // which uses __declspec(property). Once that has been rewritten in terms of 1708 // something more generic, remove the Opts.CUDA term here. 1709 Opts.DeclSpecKeyword = 1710 Args.hasFlag(OPT_fdeclspec, OPT_fno_declspec, 1711 (Opts.MicrosoftExt || Opts.Borland || Opts.CUDA)); 1712 1713 if (!Opts.CurrentModule.empty() && !Opts.ImplementationOfModule.empty() && 1714 Opts.CurrentModule != Opts.ImplementationOfModule) { 1715 Diags.Report(diag::err_conflicting_module_names) 1716 << Opts.CurrentModule << Opts.ImplementationOfModule; 1717 } 1718 1719 // For now, we only support local submodule visibility in C++ (because we 1720 // heavily depend on the ODR for merging redefinitions). 1721 if (Opts.ModulesLocalVisibility && !Opts.CPlusPlus) 1722 Diags.Report(diag::err_drv_argument_not_allowed_with) 1723 << "-fmodules-local-submodule-visibility" << "C"; 1724 1725 if (Arg *A = Args.getLastArg(OPT_faddress_space_map_mangling_EQ)) { 1726 switch (llvm::StringSwitch<unsigned>(A->getValue()) 1727 .Case("target", LangOptions::ASMM_Target) 1728 .Case("no", LangOptions::ASMM_Off) 1729 .Case("yes", LangOptions::ASMM_On) 1730 .Default(255)) { 1731 default: 1732 Diags.Report(diag::err_drv_invalid_value) 1733 << "-faddress-space-map-mangling=" << A->getValue(); 1734 break; 1735 case LangOptions::ASMM_Target: 1736 Opts.setAddressSpaceMapMangling(LangOptions::ASMM_Target); 1737 break; 1738 case LangOptions::ASMM_On: 1739 Opts.setAddressSpaceMapMangling(LangOptions::ASMM_On); 1740 break; 1741 case LangOptions::ASMM_Off: 1742 Opts.setAddressSpaceMapMangling(LangOptions::ASMM_Off); 1743 break; 1744 } 1745 } 1746 1747 if (Arg *A = Args.getLastArg(OPT_fms_memptr_rep_EQ)) { 1748 LangOptions::PragmaMSPointersToMembersKind InheritanceModel = 1749 llvm::StringSwitch<LangOptions::PragmaMSPointersToMembersKind>( 1750 A->getValue()) 1751 .Case("single", 1752 LangOptions::PPTMK_FullGeneralitySingleInheritance) 1753 .Case("multiple", 1754 LangOptions::PPTMK_FullGeneralityMultipleInheritance) 1755 .Case("virtual", 1756 LangOptions::PPTMK_FullGeneralityVirtualInheritance) 1757 .Default(LangOptions::PPTMK_BestCase); 1758 if (InheritanceModel == LangOptions::PPTMK_BestCase) 1759 Diags.Report(diag::err_drv_invalid_value) 1760 << "-fms-memptr-rep=" << A->getValue(); 1761 1762 Opts.setMSPointerToMemberRepresentationMethod(InheritanceModel); 1763 } 1764 1765 // Check if -fopenmp is specified. 1766 Opts.OpenMP = Args.hasArg(options::OPT_fopenmp); 1767 Opts.OpenMPUseTLS = 1768 Opts.OpenMP && !Args.hasArg(options::OPT_fnoopenmp_use_tls); 1769 1770 // Record whether the __DEPRECATED define was requested. 1771 Opts.Deprecated = Args.hasFlag(OPT_fdeprecated_macro, 1772 OPT_fno_deprecated_macro, 1773 Opts.Deprecated); 1774 1775 // FIXME: Eliminate this dependency. 1776 unsigned Opt = getOptimizationLevel(Args, IK, Diags), 1777 OptSize = getOptimizationLevelSize(Args); 1778 Opts.Optimize = Opt != 0; 1779 Opts.OptimizeSize = OptSize != 0; 1780 1781 // This is the __NO_INLINE__ define, which just depends on things like the 1782 // optimization level and -fno-inline, not actually whether the backend has 1783 // inlining enabled. 1784 Opts.NoInlineDefine = !Opt || Args.hasArg(OPT_fno_inline); 1785 1786 Opts.FastMath = Args.hasArg(OPT_ffast_math) || 1787 Args.hasArg(OPT_cl_fast_relaxed_math); 1788 Opts.FiniteMathOnly = Args.hasArg(OPT_ffinite_math_only) || 1789 Args.hasArg(OPT_cl_finite_math_only) || 1790 Args.hasArg(OPT_cl_fast_relaxed_math); 1791 Opts.UnsafeFPMath = Args.hasArg(OPT_menable_unsafe_fp_math) || 1792 Args.hasArg(OPT_cl_unsafe_math_optimizations) || 1793 Args.hasArg(OPT_cl_fast_relaxed_math); 1794 1795 Opts.RetainCommentsFromSystemHeaders = 1796 Args.hasArg(OPT_fretain_comments_from_system_headers); 1797 1798 unsigned SSP = getLastArgIntValue(Args, OPT_stack_protector, 0, Diags); 1799 switch (SSP) { 1800 default: 1801 Diags.Report(diag::err_drv_invalid_value) 1802 << Args.getLastArg(OPT_stack_protector)->getAsString(Args) << SSP; 1803 break; 1804 case 0: Opts.setStackProtector(LangOptions::SSPOff); break; 1805 case 1: Opts.setStackProtector(LangOptions::SSPOn); break; 1806 case 2: Opts.setStackProtector(LangOptions::SSPStrong); break; 1807 case 3: Opts.setStackProtector(LangOptions::SSPReq); break; 1808 } 1809 1810 // Parse -fsanitize= arguments. 1811 parseSanitizerKinds("-fsanitize=", Args.getAllArgValues(OPT_fsanitize_EQ), 1812 Diags, Opts.Sanitize); 1813 // -fsanitize-address-field-padding=N has to be a LangOpt, parse it here. 1814 Opts.SanitizeAddressFieldPadding = 1815 getLastArgIntValue(Args, OPT_fsanitize_address_field_padding, 0, Diags); 1816 Opts.SanitizerBlacklistFiles = Args.getAllArgValues(OPT_fsanitize_blacklist); 1817 } 1818 1819 static void ParsePreprocessorArgs(PreprocessorOptions &Opts, ArgList &Args, 1820 FileManager &FileMgr, 1821 DiagnosticsEngine &Diags) { 1822 using namespace options; 1823 Opts.ImplicitPCHInclude = Args.getLastArgValue(OPT_include_pch); 1824 Opts.ImplicitPTHInclude = Args.getLastArgValue(OPT_include_pth); 1825 if (const Arg *A = Args.getLastArg(OPT_token_cache)) 1826 Opts.TokenCache = A->getValue(); 1827 else 1828 Opts.TokenCache = Opts.ImplicitPTHInclude; 1829 Opts.UsePredefines = !Args.hasArg(OPT_undef); 1830 Opts.DetailedRecord = Args.hasArg(OPT_detailed_preprocessing_record); 1831 Opts.DisablePCHValidation = Args.hasArg(OPT_fno_validate_pch); 1832 1833 Opts.DumpDeserializedPCHDecls = Args.hasArg(OPT_dump_deserialized_pch_decls); 1834 for (const Arg *A : Args.filtered(OPT_error_on_deserialized_pch_decl)) 1835 Opts.DeserializedPCHDeclsToErrorOn.insert(A->getValue()); 1836 1837 if (const Arg *A = Args.getLastArg(OPT_preamble_bytes_EQ)) { 1838 StringRef Value(A->getValue()); 1839 size_t Comma = Value.find(','); 1840 unsigned Bytes = 0; 1841 unsigned EndOfLine = 0; 1842 1843 if (Comma == StringRef::npos || 1844 Value.substr(0, Comma).getAsInteger(10, Bytes) || 1845 Value.substr(Comma + 1).getAsInteger(10, EndOfLine)) 1846 Diags.Report(diag::err_drv_preamble_format); 1847 else { 1848 Opts.PrecompiledPreambleBytes.first = Bytes; 1849 Opts.PrecompiledPreambleBytes.second = (EndOfLine != 0); 1850 } 1851 } 1852 1853 // Add macros from the command line. 1854 for (const Arg *A : Args.filtered(OPT_D, OPT_U)) { 1855 if (A->getOption().matches(OPT_D)) 1856 Opts.addMacroDef(A->getValue()); 1857 else 1858 Opts.addMacroUndef(A->getValue()); 1859 } 1860 1861 Opts.MacroIncludes = Args.getAllArgValues(OPT_imacros); 1862 1863 // Add the ordered list of -includes. 1864 for (const Arg *A : Args.filtered(OPT_include)) 1865 Opts.Includes.emplace_back(A->getValue()); 1866 1867 for (const Arg *A : Args.filtered(OPT_chain_include)) 1868 Opts.ChainedIncludes.emplace_back(A->getValue()); 1869 1870 // Include 'altivec.h' if -faltivec option present 1871 if (Args.hasArg(OPT_faltivec)) 1872 Opts.Includes.emplace_back("altivec.h"); 1873 1874 for (const Arg *A : Args.filtered(OPT_remap_file)) { 1875 std::pair<StringRef, StringRef> Split = StringRef(A->getValue()).split(';'); 1876 1877 if (Split.second.empty()) { 1878 Diags.Report(diag::err_drv_invalid_remap_file) << A->getAsString(Args); 1879 continue; 1880 } 1881 1882 Opts.addRemappedFile(Split.first, Split.second); 1883 } 1884 1885 if (Arg *A = Args.getLastArg(OPT_fobjc_arc_cxxlib_EQ)) { 1886 StringRef Name = A->getValue(); 1887 unsigned Library = llvm::StringSwitch<unsigned>(Name) 1888 .Case("libc++", ARCXX_libcxx) 1889 .Case("libstdc++", ARCXX_libstdcxx) 1890 .Case("none", ARCXX_nolib) 1891 .Default(~0U); 1892 if (Library == ~0U) 1893 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Name; 1894 else 1895 Opts.ObjCXXARCStandardLibrary = (ObjCXXARCStandardLibraryKind)Library; 1896 } 1897 } 1898 1899 static void ParsePreprocessorOutputArgs(PreprocessorOutputOptions &Opts, 1900 ArgList &Args, 1901 frontend::ActionKind Action) { 1902 using namespace options; 1903 1904 switch (Action) { 1905 case frontend::ASTDeclList: 1906 case frontend::ASTDump: 1907 case frontend::ASTPrint: 1908 case frontend::ASTView: 1909 case frontend::EmitAssembly: 1910 case frontend::EmitBC: 1911 case frontend::EmitHTML: 1912 case frontend::EmitLLVM: 1913 case frontend::EmitLLVMOnly: 1914 case frontend::EmitCodeGenOnly: 1915 case frontend::EmitObj: 1916 case frontend::FixIt: 1917 case frontend::GenerateModule: 1918 case frontend::GeneratePCH: 1919 case frontend::GeneratePTH: 1920 case frontend::ParseSyntaxOnly: 1921 case frontend::ModuleFileInfo: 1922 case frontend::VerifyPCH: 1923 case frontend::PluginAction: 1924 case frontend::PrintDeclContext: 1925 case frontend::RewriteObjC: 1926 case frontend::RewriteTest: 1927 case frontend::RunAnalysis: 1928 case frontend::MigrateSource: 1929 Opts.ShowCPP = 0; 1930 break; 1931 1932 case frontend::DumpRawTokens: 1933 case frontend::DumpTokens: 1934 case frontend::InitOnly: 1935 case frontend::PrintPreamble: 1936 case frontend::PrintPreprocessedInput: 1937 case frontend::RewriteMacros: 1938 case frontend::RunPreprocessorOnly: 1939 Opts.ShowCPP = !Args.hasArg(OPT_dM); 1940 break; 1941 } 1942 1943 Opts.ShowComments = Args.hasArg(OPT_C); 1944 Opts.ShowLineMarkers = !Args.hasArg(OPT_P); 1945 Opts.ShowMacroComments = Args.hasArg(OPT_CC); 1946 Opts.ShowMacros = Args.hasArg(OPT_dM) || Args.hasArg(OPT_dD); 1947 Opts.RewriteIncludes = Args.hasArg(OPT_frewrite_includes); 1948 Opts.UseLineDirectives = Args.hasArg(OPT_fuse_line_directives); 1949 } 1950 1951 static void ParseTargetArgs(TargetOptions &Opts, ArgList &Args) { 1952 using namespace options; 1953 Opts.ABI = Args.getLastArgValue(OPT_target_abi); 1954 Opts.CPU = Args.getLastArgValue(OPT_target_cpu); 1955 Opts.FPMath = Args.getLastArgValue(OPT_mfpmath); 1956 Opts.FeaturesAsWritten = Args.getAllArgValues(OPT_target_feature); 1957 Opts.LinkerVersion = Args.getLastArgValue(OPT_target_linker_version); 1958 Opts.Triple = llvm::Triple::normalize(Args.getLastArgValue(OPT_triple)); 1959 Opts.Reciprocals = Args.getAllArgValues(OPT_mrecip_EQ); 1960 // Use the default target triple if unspecified. 1961 if (Opts.Triple.empty()) 1962 Opts.Triple = llvm::sys::getDefaultTargetTriple(); 1963 } 1964 1965 bool CompilerInvocation::CreateFromArgs(CompilerInvocation &Res, 1966 const char *const *ArgBegin, 1967 const char *const *ArgEnd, 1968 DiagnosticsEngine &Diags) { 1969 bool Success = true; 1970 1971 // Parse the arguments. 1972 std::unique_ptr<OptTable> Opts(createDriverOptTable()); 1973 const unsigned IncludedFlagsBitmask = options::CC1Option; 1974 unsigned MissingArgIndex, MissingArgCount; 1975 InputArgList Args = 1976 Opts->ParseArgs(llvm::makeArrayRef(ArgBegin, ArgEnd), MissingArgIndex, 1977 MissingArgCount, IncludedFlagsBitmask); 1978 1979 // Check for missing argument error. 1980 if (MissingArgCount) { 1981 Diags.Report(diag::err_drv_missing_argument) 1982 << Args.getArgString(MissingArgIndex) << MissingArgCount; 1983 Success = false; 1984 } 1985 1986 // Issue errors on unknown arguments. 1987 for (const Arg *A : Args.filtered(OPT_UNKNOWN)) { 1988 Diags.Report(diag::err_drv_unknown_argument) << A->getAsString(Args); 1989 Success = false; 1990 } 1991 1992 Success &= ParseAnalyzerArgs(*Res.getAnalyzerOpts(), Args, Diags); 1993 Success &= ParseMigratorArgs(Res.getMigratorOpts(), Args); 1994 ParseDependencyOutputArgs(Res.getDependencyOutputOpts(), Args); 1995 Success &= ParseDiagnosticArgs(Res.getDiagnosticOpts(), Args, &Diags); 1996 ParseCommentArgs(Res.getLangOpts()->CommentOpts, Args); 1997 ParseFileSystemArgs(Res.getFileSystemOpts(), Args); 1998 // FIXME: We shouldn't have to pass the DashX option around here 1999 InputKind DashX = ParseFrontendArgs(Res.getFrontendOpts(), Args, Diags); 2000 ParseTargetArgs(Res.getTargetOpts(), Args); 2001 Success &= ParseCodeGenArgs(Res.getCodeGenOpts(), Args, DashX, Diags, 2002 Res.getTargetOpts()); 2003 ParseHeaderSearchArgs(Res.getHeaderSearchOpts(), Args); 2004 if (DashX == IK_AST || DashX == IK_LLVM_IR) { 2005 // ObjCAAutoRefCount and Sanitize LangOpts are used to setup the 2006 // PassManager in BackendUtil.cpp. They need to be initializd no matter 2007 // what the input type is. 2008 if (Args.hasArg(OPT_fobjc_arc)) 2009 Res.getLangOpts()->ObjCAutoRefCount = 1; 2010 parseSanitizerKinds("-fsanitize=", Args.getAllArgValues(OPT_fsanitize_EQ), 2011 Diags, Res.getLangOpts()->Sanitize); 2012 } else { 2013 // Other LangOpts are only initialzed when the input is not AST or LLVM IR. 2014 ParseLangArgs(*Res.getLangOpts(), Args, DashX, Diags); 2015 if (Res.getFrontendOpts().ProgramAction == frontend::RewriteObjC) 2016 Res.getLangOpts()->ObjCExceptions = 1; 2017 } 2018 // FIXME: ParsePreprocessorArgs uses the FileManager to read the contents of 2019 // PCH file and find the original header name. Remove the need to do that in 2020 // ParsePreprocessorArgs and remove the FileManager 2021 // parameters from the function and the "FileManager.h" #include. 2022 FileManager FileMgr(Res.getFileSystemOpts()); 2023 ParsePreprocessorArgs(Res.getPreprocessorOpts(), Args, FileMgr, Diags); 2024 ParsePreprocessorOutputArgs(Res.getPreprocessorOutputOpts(), Args, 2025 Res.getFrontendOpts().ProgramAction); 2026 return Success; 2027 } 2028 2029 namespace { 2030 2031 class ModuleSignature { 2032 SmallVector<uint64_t, 16> Data; 2033 unsigned CurBit; 2034 uint64_t CurValue; 2035 2036 public: 2037 ModuleSignature() : CurBit(0), CurValue(0) { } 2038 2039 void add(uint64_t Value, unsigned Bits); 2040 void add(StringRef Value); 2041 void flush(); 2042 2043 llvm::APInt getAsInteger() const; 2044 }; 2045 } 2046 2047 void ModuleSignature::add(uint64_t Value, unsigned int NumBits) { 2048 CurValue |= Value << CurBit; 2049 if (CurBit + NumBits < 64) { 2050 CurBit += NumBits; 2051 return; 2052 } 2053 2054 // Add the current word. 2055 Data.push_back(CurValue); 2056 2057 if (CurBit) 2058 CurValue = Value >> (64-CurBit); 2059 else 2060 CurValue = 0; 2061 CurBit = (CurBit+NumBits) & 63; 2062 } 2063 2064 void ModuleSignature::flush() { 2065 if (CurBit == 0) 2066 return; 2067 2068 Data.push_back(CurValue); 2069 CurBit = 0; 2070 CurValue = 0; 2071 } 2072 2073 void ModuleSignature::add(StringRef Value) { 2074 for (auto &c : Value) 2075 add(c, 8); 2076 } 2077 2078 llvm::APInt ModuleSignature::getAsInteger() const { 2079 return llvm::APInt(Data.size() * 64, Data); 2080 } 2081 2082 std::string CompilerInvocation::getModuleHash() const { 2083 // Note: For QoI reasons, the things we use as a hash here should all be 2084 // dumped via the -module-info flag. 2085 using llvm::hash_code; 2086 using llvm::hash_value; 2087 using llvm::hash_combine; 2088 2089 // Start the signature with the compiler version. 2090 // FIXME: We'd rather use something more cryptographically sound than 2091 // CityHash, but this will do for now. 2092 hash_code code = hash_value(getClangFullRepositoryVersion()); 2093 2094 // Extend the signature with the language options 2095 #define LANGOPT(Name, Bits, Default, Description) \ 2096 code = hash_combine(code, LangOpts->Name); 2097 #define ENUM_LANGOPT(Name, Type, Bits, Default, Description) \ 2098 code = hash_combine(code, static_cast<unsigned>(LangOpts->get##Name())); 2099 #define BENIGN_LANGOPT(Name, Bits, Default, Description) 2100 #define BENIGN_ENUM_LANGOPT(Name, Type, Bits, Default, Description) 2101 #include "clang/Basic/LangOptions.def" 2102 2103 for (StringRef Feature : LangOpts->ModuleFeatures) 2104 code = hash_combine(code, Feature); 2105 2106 // Extend the signature with the target options. 2107 code = hash_combine(code, TargetOpts->Triple, TargetOpts->CPU, 2108 TargetOpts->ABI); 2109 for (unsigned i = 0, n = TargetOpts->FeaturesAsWritten.size(); i != n; ++i) 2110 code = hash_combine(code, TargetOpts->FeaturesAsWritten[i]); 2111 2112 // Extend the signature with preprocessor options. 2113 const PreprocessorOptions &ppOpts = getPreprocessorOpts(); 2114 const HeaderSearchOptions &hsOpts = getHeaderSearchOpts(); 2115 code = hash_combine(code, ppOpts.UsePredefines, ppOpts.DetailedRecord); 2116 2117 for (std::vector<std::pair<std::string, bool/*isUndef*/>>::const_iterator 2118 I = getPreprocessorOpts().Macros.begin(), 2119 IEnd = getPreprocessorOpts().Macros.end(); 2120 I != IEnd; ++I) { 2121 // If we're supposed to ignore this macro for the purposes of modules, 2122 // don't put it into the hash. 2123 if (!hsOpts.ModulesIgnoreMacros.empty()) { 2124 // Check whether we're ignoring this macro. 2125 StringRef MacroDef = I->first; 2126 if (hsOpts.ModulesIgnoreMacros.count(MacroDef.split('=').first)) 2127 continue; 2128 } 2129 2130 code = hash_combine(code, I->first, I->second); 2131 } 2132 2133 // Extend the signature with the sysroot. 2134 code = hash_combine(code, hsOpts.Sysroot, hsOpts.UseBuiltinIncludes, 2135 hsOpts.UseStandardSystemIncludes, 2136 hsOpts.UseStandardCXXIncludes, 2137 hsOpts.UseLibcxx); 2138 code = hash_combine(code, hsOpts.ResourceDir); 2139 2140 // Extend the signature with the user build path. 2141 code = hash_combine(code, hsOpts.ModuleUserBuildPath); 2142 2143 // Extend the signature with the module file extensions. 2144 const FrontendOptions &frontendOpts = getFrontendOpts(); 2145 for (auto ext : frontendOpts.ModuleFileExtensions) { 2146 code = ext->hashExtension(code); 2147 } 2148 2149 // Darwin-specific hack: if we have a sysroot, use the contents and 2150 // modification time of 2151 // $sysroot/System/Library/CoreServices/SystemVersion.plist 2152 // as part of the module hash. 2153 if (!hsOpts.Sysroot.empty()) { 2154 SmallString<128> systemVersionFile; 2155 systemVersionFile += hsOpts.Sysroot; 2156 llvm::sys::path::append(systemVersionFile, "System"); 2157 llvm::sys::path::append(systemVersionFile, "Library"); 2158 llvm::sys::path::append(systemVersionFile, "CoreServices"); 2159 llvm::sys::path::append(systemVersionFile, "SystemVersion.plist"); 2160 2161 llvm::ErrorOr<std::unique_ptr<llvm::MemoryBuffer>> buffer = 2162 llvm::MemoryBuffer::getFile(systemVersionFile); 2163 if (buffer) { 2164 code = hash_combine(code, buffer.get()->getBuffer()); 2165 2166 struct stat statBuf; 2167 if (stat(systemVersionFile.c_str(), &statBuf) == 0) 2168 code = hash_combine(code, statBuf.st_mtime); 2169 } 2170 } 2171 2172 return llvm::APInt(64, code).toString(36, /*Signed=*/false); 2173 } 2174 2175 namespace clang { 2176 2177 template<typename IntTy> 2178 static IntTy getLastArgIntValueImpl(const ArgList &Args, OptSpecifier Id, 2179 IntTy Default, 2180 DiagnosticsEngine *Diags) { 2181 IntTy Res = Default; 2182 if (Arg *A = Args.getLastArg(Id)) { 2183 if (StringRef(A->getValue()).getAsInteger(10, Res)) { 2184 if (Diags) 2185 Diags->Report(diag::err_drv_invalid_int_value) << A->getAsString(Args) 2186 << A->getValue(); 2187 } 2188 } 2189 return Res; 2190 } 2191 2192 2193 // Declared in clang/Frontend/Utils.h. 2194 int getLastArgIntValue(const ArgList &Args, OptSpecifier Id, int Default, 2195 DiagnosticsEngine *Diags) { 2196 return getLastArgIntValueImpl<int>(Args, Id, Default, Diags); 2197 } 2198 2199 uint64_t getLastArgUInt64Value(const ArgList &Args, OptSpecifier Id, 2200 uint64_t Default, 2201 DiagnosticsEngine *Diags) { 2202 return getLastArgIntValueImpl<uint64_t>(Args, Id, Default, Diags); 2203 } 2204 2205 void BuryPointer(const void *Ptr) { 2206 // This function may be called only a small fixed amount of times per each 2207 // invocation, otherwise we do actually have a leak which we want to report. 2208 // If this function is called more than kGraveYardMaxSize times, the pointers 2209 // will not be properly buried and a leak detector will report a leak, which 2210 // is what we want in such case. 2211 static const size_t kGraveYardMaxSize = 16; 2212 LLVM_ATTRIBUTE_UNUSED static const void *GraveYard[kGraveYardMaxSize]; 2213 static std::atomic<unsigned> GraveYardSize; 2214 unsigned Idx = GraveYardSize++; 2215 if (Idx >= kGraveYardMaxSize) 2216 return; 2217 GraveYard[Idx] = Ptr; 2218 } 2219 2220 IntrusiveRefCntPtr<vfs::FileSystem> 2221 createVFSFromCompilerInvocation(const CompilerInvocation &CI, 2222 DiagnosticsEngine &Diags) { 2223 if (CI.getHeaderSearchOpts().VFSOverlayFiles.empty()) 2224 return vfs::getRealFileSystem(); 2225 2226 IntrusiveRefCntPtr<vfs::OverlayFileSystem> 2227 Overlay(new vfs::OverlayFileSystem(vfs::getRealFileSystem())); 2228 // earlier vfs files are on the bottom 2229 for (const std::string &File : CI.getHeaderSearchOpts().VFSOverlayFiles) { 2230 llvm::ErrorOr<std::unique_ptr<llvm::MemoryBuffer>> Buffer = 2231 llvm::MemoryBuffer::getFile(File); 2232 if (!Buffer) { 2233 Diags.Report(diag::err_missing_vfs_overlay_file) << File; 2234 return IntrusiveRefCntPtr<vfs::FileSystem>(); 2235 } 2236 2237 IntrusiveRefCntPtr<vfs::FileSystem> FS = 2238 vfs::getVFSFromYAML(std::move(Buffer.get()), /*DiagHandler*/ nullptr); 2239 if (!FS.get()) { 2240 Diags.Report(diag::err_invalid_vfs_overlay) << File; 2241 return IntrusiveRefCntPtr<vfs::FileSystem>(); 2242 } 2243 Overlay->pushOverlay(FS); 2244 } 2245 return Overlay; 2246 } 2247 } // end namespace clang 2248