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 "clang/Basic/Diagnostic.h" 12 #include "clang/Basic/FileManager.h" 13 #include "clang/Basic/Version.h" 14 #include "clang/Driver/Arg.h" 15 #include "clang/Driver/ArgList.h" 16 #include "clang/Driver/DriverDiagnostic.h" 17 #include "clang/Driver/OptTable.h" 18 #include "clang/Driver/Option.h" 19 #include "clang/Driver/Options.h" 20 #include "clang/Frontend/LangStandard.h" 21 #include "clang/Lex/HeaderSearchOptions.h" 22 #include "clang/Serialization/ASTReader.h" 23 #include "llvm/ADT/Hashing.h" 24 #include "llvm/ADT/OwningPtr.h" 25 #include "llvm/ADT/SmallVector.h" 26 #include "llvm/ADT/StringExtras.h" 27 #include "llvm/ADT/StringSwitch.h" 28 #include "llvm/ADT/Triple.h" 29 #include "llvm/Support/ErrorHandling.h" 30 #include "llvm/Support/Host.h" 31 #include "llvm/Support/Path.h" 32 using namespace clang; 33 34 //===----------------------------------------------------------------------===// 35 // Initialization. 36 //===----------------------------------------------------------------------===// 37 38 CompilerInvocationBase::CompilerInvocationBase() 39 : LangOpts(new LangOptions()), TargetOpts(new TargetOptions()), 40 DiagnosticOpts(new DiagnosticOptions()), 41 HeaderSearchOpts(new HeaderSearchOptions()), 42 PreprocessorOpts(new PreprocessorOptions()) {} 43 44 CompilerInvocationBase::CompilerInvocationBase(const CompilerInvocationBase &X) 45 : RefCountedBase<CompilerInvocation>(), 46 LangOpts(new LangOptions(*X.getLangOpts())), 47 TargetOpts(new TargetOptions(X.getTargetOpts())), 48 DiagnosticOpts(new DiagnosticOptions(X.getDiagnosticOpts())), 49 HeaderSearchOpts(new HeaderSearchOptions(X.getHeaderSearchOpts())), 50 PreprocessorOpts(new PreprocessorOptions(X.getPreprocessorOpts())) {} 51 52 //===----------------------------------------------------------------------===// 53 // Deserialization (from args) 54 //===----------------------------------------------------------------------===// 55 56 using namespace clang::driver; 57 using namespace clang::driver::options; 58 59 // 60 61 static unsigned getOptimizationLevel(ArgList &Args, InputKind IK, 62 DiagnosticsEngine &Diags) { 63 unsigned DefaultOpt = 0; 64 if (IK == IK_OpenCL && !Args.hasArg(OPT_cl_opt_disable)) 65 DefaultOpt = 2; 66 67 if (Arg *A = Args.getLastArg(options::OPT_O_Group)) { 68 if (A->getOption().matches(options::OPT_O0)) 69 return 0; 70 71 assert (A->getOption().matches(options::OPT_O)); 72 73 StringRef S(A->getValue()); 74 if (S == "s" || S == "z" || S.empty()) 75 return 2; 76 77 return Args.getLastArgIntValue(OPT_O, DefaultOpt, Diags); 78 } 79 80 return DefaultOpt; 81 } 82 83 static unsigned getOptimizationLevelSize(ArgList &Args, InputKind IK, 84 DiagnosticsEngine &Diags) { 85 if (Arg *A = Args.getLastArg(options::OPT_O_Group)) { 86 if (A->getOption().matches(options::OPT_O)) { 87 switch (A->getValue()[0]) { 88 default: 89 return 0; 90 case 's': 91 return 1; 92 case 'z': 93 return 2; 94 } 95 } 96 } 97 return 0; 98 } 99 100 static void addWarningArgs(ArgList &Args, std::vector<std::string> &Warnings) { 101 for (arg_iterator I = Args.filtered_begin(OPT_W_Group), 102 E = Args.filtered_end(); I != E; ++I) { 103 Arg *A = *I; 104 // If the argument is a pure flag, add its name (minus the "W" at the beginning) 105 // to the warning list. Else, add its value (for the OPT_W case). 106 if (A->getOption().getKind() == Option::FlagClass) { 107 Warnings.push_back(A->getOption().getName().substr(1)); 108 } else { 109 for (unsigned Idx = 0, End = A->getNumValues(); 110 Idx < End; ++Idx) { 111 StringRef V = A->getValue(Idx); 112 // "-Wl," and such are not warning options. 113 // FIXME: Should be handled by putting these in separate flags. 114 if (V.startswith("l,") || V.startswith("a,") || V.startswith("p,")) 115 continue; 116 117 Warnings.push_back(V); 118 } 119 } 120 } 121 } 122 123 static bool ParseAnalyzerArgs(AnalyzerOptions &Opts, ArgList &Args, 124 DiagnosticsEngine &Diags) { 125 using namespace options; 126 bool Success = true; 127 if (Arg *A = Args.getLastArg(OPT_analyzer_store)) { 128 StringRef Name = A->getValue(); 129 AnalysisStores Value = llvm::StringSwitch<AnalysisStores>(Name) 130 #define ANALYSIS_STORE(NAME, CMDFLAG, DESC, CREATFN) \ 131 .Case(CMDFLAG, NAME##Model) 132 #include "clang/StaticAnalyzer/Core/Analyses.def" 133 .Default(NumStores); 134 if (Value == NumStores) { 135 Diags.Report(diag::err_drv_invalid_value) 136 << A->getAsString(Args) << Name; 137 Success = false; 138 } else { 139 Opts.AnalysisStoreOpt = Value; 140 } 141 } 142 143 if (Arg *A = Args.getLastArg(OPT_analyzer_constraints)) { 144 StringRef Name = A->getValue(); 145 AnalysisConstraints Value = llvm::StringSwitch<AnalysisConstraints>(Name) 146 #define ANALYSIS_CONSTRAINTS(NAME, CMDFLAG, DESC, CREATFN) \ 147 .Case(CMDFLAG, NAME##Model) 148 #include "clang/StaticAnalyzer/Core/Analyses.def" 149 .Default(NumConstraints); 150 if (Value == NumConstraints) { 151 Diags.Report(diag::err_drv_invalid_value) 152 << A->getAsString(Args) << Name; 153 Success = false; 154 } else { 155 Opts.AnalysisConstraintsOpt = Value; 156 } 157 } 158 159 if (Arg *A = Args.getLastArg(OPT_analyzer_output)) { 160 StringRef Name = A->getValue(); 161 AnalysisDiagClients Value = llvm::StringSwitch<AnalysisDiagClients>(Name) 162 #define ANALYSIS_DIAGNOSTICS(NAME, CMDFLAG, DESC, CREATFN, AUTOCREAT) \ 163 .Case(CMDFLAG, PD_##NAME) 164 #include "clang/StaticAnalyzer/Core/Analyses.def" 165 .Default(NUM_ANALYSIS_DIAG_CLIENTS); 166 if (Value == NUM_ANALYSIS_DIAG_CLIENTS) { 167 Diags.Report(diag::err_drv_invalid_value) 168 << A->getAsString(Args) << Name; 169 Success = false; 170 } else { 171 Opts.AnalysisDiagOpt = Value; 172 } 173 } 174 175 if (Arg *A = Args.getLastArg(OPT_analyzer_purge)) { 176 StringRef Name = A->getValue(); 177 AnalysisPurgeMode Value = llvm::StringSwitch<AnalysisPurgeMode>(Name) 178 #define ANALYSIS_PURGE(NAME, CMDFLAG, DESC) \ 179 .Case(CMDFLAG, NAME) 180 #include "clang/StaticAnalyzer/Core/Analyses.def" 181 .Default(NumPurgeModes); 182 if (Value == NumPurgeModes) { 183 Diags.Report(diag::err_drv_invalid_value) 184 << A->getAsString(Args) << Name; 185 Success = false; 186 } else { 187 Opts.AnalysisPurgeOpt = Value; 188 } 189 } 190 191 if (Arg *A = Args.getLastArg(OPT_analyzer_inlining_mode)) { 192 StringRef Name = A->getValue(); 193 AnalysisInliningMode Value = llvm::StringSwitch<AnalysisInliningMode>(Name) 194 #define ANALYSIS_INLINING_MODE(NAME, CMDFLAG, DESC) \ 195 .Case(CMDFLAG, NAME) 196 #include "clang/StaticAnalyzer/Core/Analyses.def" 197 .Default(NumInliningModes); 198 if (Value == NumInliningModes) { 199 Diags.Report(diag::err_drv_invalid_value) 200 << A->getAsString(Args) << Name; 201 Success = false; 202 } else { 203 Opts.InliningMode = Value; 204 } 205 } 206 207 Opts.ShowCheckerHelp = Args.hasArg(OPT_analyzer_checker_help); 208 Opts.visualizeExplodedGraphWithGraphViz = 209 Args.hasArg(OPT_analyzer_viz_egraph_graphviz); 210 Opts.visualizeExplodedGraphWithUbiGraph = 211 Args.hasArg(OPT_analyzer_viz_egraph_ubigraph); 212 Opts.NoRetryExhausted = Args.hasArg(OPT_analyzer_disable_retry_exhausted); 213 Opts.AnalyzeAll = Args.hasArg(OPT_analyzer_opt_analyze_headers); 214 Opts.AnalyzerDisplayProgress = Args.hasArg(OPT_analyzer_display_progress); 215 Opts.AnalyzeNestedBlocks = 216 Args.hasArg(OPT_analyzer_opt_analyze_nested_blocks); 217 Opts.eagerlyAssumeBinOpBifurcation = Args.hasArg(OPT_analyzer_eagerly_assume); 218 Opts.AnalyzeSpecificFunction = Args.getLastArgValue(OPT_analyze_function); 219 Opts.UnoptimizedCFG = Args.hasArg(OPT_analysis_UnoptimizedCFG); 220 Opts.TrimGraph = Args.hasArg(OPT_trim_egraph); 221 Opts.maxBlockVisitOnPath = Args.getLastArgIntValue(OPT_analyzer_max_loop, 4, Diags); 222 Opts.PrintStats = Args.hasArg(OPT_analyzer_stats); 223 Opts.InlineMaxStackDepth = 224 Args.getLastArgIntValue(OPT_analyzer_inline_max_stack_depth, 225 Opts.InlineMaxStackDepth, Diags); 226 227 Opts.CheckersControlList.clear(); 228 for (arg_iterator it = Args.filtered_begin(OPT_analyzer_checker, 229 OPT_analyzer_disable_checker), 230 ie = Args.filtered_end(); it != ie; ++it) { 231 const Arg *A = *it; 232 A->claim(); 233 bool enable = (A->getOption().getID() == OPT_analyzer_checker); 234 // We can have a list of comma separated checker names, e.g: 235 // '-analyzer-checker=cocoa,unix' 236 StringRef checkerList = A->getValue(); 237 SmallVector<StringRef, 4> checkers; 238 checkerList.split(checkers, ","); 239 for (unsigned i = 0, e = checkers.size(); i != e; ++i) 240 Opts.CheckersControlList.push_back(std::make_pair(checkers[i], enable)); 241 } 242 243 // Go through the analyzer configuration options. 244 for (arg_iterator it = Args.filtered_begin(OPT_analyzer_config), 245 ie = Args.filtered_end(); it != ie; ++it) { 246 const Arg *A = *it; 247 A->claim(); 248 // We can have a list of comma separated config names, e.g: 249 // '-analyzer-config key1=val1,key2=val2' 250 StringRef configList = A->getValue(); 251 SmallVector<StringRef, 4> configVals; 252 configList.split(configVals, ","); 253 for (unsigned i = 0, e = configVals.size(); i != e; ++i) { 254 StringRef key, val; 255 llvm::tie(key, val) = configVals[i].split("="); 256 if (val.empty()) { 257 Diags.Report(SourceLocation(), 258 diag::err_analyzer_config_no_value) << configVals[i]; 259 Success = false; 260 break; 261 } 262 if (val.find('=') != StringRef::npos) { 263 Diags.Report(SourceLocation(), 264 diag::err_analyzer_config_multiple_values) 265 << configVals[i]; 266 Success = false; 267 break; 268 } 269 Opts.Config[key] = val; 270 } 271 } 272 273 return Success; 274 } 275 276 static bool ParseMigratorArgs(MigratorOptions &Opts, ArgList &Args) { 277 Opts.NoNSAllocReallocError = Args.hasArg(OPT_migrator_no_nsalloc_error); 278 Opts.NoFinalizeRemoval = Args.hasArg(OPT_migrator_no_finalize_removal); 279 return true; 280 } 281 282 static bool ParseCodeGenArgs(CodeGenOptions &Opts, ArgList &Args, InputKind IK, 283 DiagnosticsEngine &Diags) { 284 using namespace options; 285 bool Success = true; 286 287 unsigned OptLevel = getOptimizationLevel(Args, IK, Diags); 288 if (OptLevel > 3) { 289 Diags.Report(diag::err_drv_invalid_value) 290 << Args.getLastArg(OPT_O)->getAsString(Args) << OptLevel; 291 OptLevel = 3; 292 Success = false; 293 } 294 Opts.OptimizationLevel = OptLevel; 295 296 // We must always run at least the always inlining pass. 297 Opts.setInlining( 298 (Opts.OptimizationLevel > 1) ? CodeGenOptions::NormalInlining 299 : CodeGenOptions::OnlyAlwaysInlining); 300 // -fno-inline-functions overrides OptimizationLevel > 1. 301 Opts.NoInline = Args.hasArg(OPT_fno_inline); 302 Opts.setInlining(Args.hasArg(OPT_fno_inline_functions) ? 303 CodeGenOptions::OnlyAlwaysInlining : Opts.getInlining()); 304 305 if (Args.hasArg(OPT_gline_tables_only)) { 306 Opts.setDebugInfo(CodeGenOptions::DebugLineTablesOnly); 307 } else if (Args.hasArg(OPT_g_Flag)) { 308 if (Args.hasFlag(OPT_flimit_debug_info, OPT_fno_limit_debug_info, true)) 309 Opts.setDebugInfo(CodeGenOptions::LimitedDebugInfo); 310 else 311 Opts.setDebugInfo(CodeGenOptions::FullDebugInfo); 312 } 313 Opts.DebugColumnInfo = Args.hasArg(OPT_dwarf_column_info); 314 315 Opts.ModulesAutolink = Args.hasArg(OPT_fmodules_autolink); 316 Opts.DisableLLVMOpts = Args.hasArg(OPT_disable_llvm_optzns); 317 Opts.DisableRedZone = Args.hasArg(OPT_disable_red_zone); 318 Opts.ForbidGuardVariables = Args.hasArg(OPT_fforbid_guard_variables); 319 Opts.UseRegisterSizedBitfieldAccess = Args.hasArg( 320 OPT_fuse_register_sized_bitfield_access); 321 Opts.RelaxedAliasing = Args.hasArg(OPT_relaxed_aliasing); 322 Opts.DwarfDebugFlags = Args.getLastArgValue(OPT_dwarf_debug_flags); 323 Opts.MergeAllConstants = !Args.hasArg(OPT_fno_merge_all_constants); 324 Opts.NoCommon = Args.hasArg(OPT_fno_common); 325 Opts.NoImplicitFloat = Args.hasArg(OPT_no_implicit_float); 326 Opts.OptimizeSize = getOptimizationLevelSize(Args, IK, Diags); 327 Opts.SimplifyLibCalls = !(Args.hasArg(OPT_fno_builtin) || 328 Args.hasArg(OPT_ffreestanding)); 329 Opts.UnrollLoops = Args.hasArg(OPT_funroll_loops) || 330 (Opts.OptimizationLevel > 1 && !Opts.OptimizeSize); 331 332 Opts.AsmVerbose = Args.hasArg(OPT_masm_verbose); 333 Opts.ObjCAutoRefCountExceptions = Args.hasArg(OPT_fobjc_arc_exceptions); 334 Opts.CUDAIsDevice = Args.hasArg(OPT_fcuda_is_device); 335 Opts.CXAAtExit = !Args.hasArg(OPT_fno_use_cxa_atexit); 336 Opts.CXXCtorDtorAliases = Args.hasArg(OPT_mconstructor_aliases); 337 Opts.CodeModel = Args.getLastArgValue(OPT_mcode_model); 338 Opts.DebugPass = Args.getLastArgValue(OPT_mdebug_pass); 339 Opts.DisableFPElim = Args.hasArg(OPT_mdisable_fp_elim); 340 Opts.DisableTailCalls = Args.hasArg(OPT_mdisable_tail_calls); 341 Opts.FloatABI = Args.getLastArgValue(OPT_mfloat_abi); 342 Opts.HiddenWeakVTables = Args.hasArg(OPT_fhidden_weak_vtables); 343 Opts.LessPreciseFPMAD = Args.hasArg(OPT_cl_mad_enable); 344 Opts.LimitFloatPrecision = Args.getLastArgValue(OPT_mlimit_float_precision); 345 Opts.NoInfsFPMath = (Args.hasArg(OPT_menable_no_infinities) || 346 Args.hasArg(OPT_cl_finite_math_only)|| 347 Args.hasArg(OPT_cl_fast_relaxed_math)); 348 Opts.NoNaNsFPMath = (Args.hasArg(OPT_menable_no_nans) || 349 Args.hasArg(OPT_cl_finite_math_only)|| 350 Args.hasArg(OPT_cl_fast_relaxed_math)); 351 Opts.NoZeroInitializedInBSS = Args.hasArg(OPT_mno_zero_initialized_in_bss); 352 Opts.BackendOptions = Args.getAllArgValues(OPT_backend_option); 353 Opts.NumRegisterParameters = Args.getLastArgIntValue(OPT_mregparm, 0, Diags); 354 Opts.NoGlobalMerge = Args.hasArg(OPT_mno_global_merge); 355 Opts.NoExecStack = Args.hasArg(OPT_mno_exec_stack); 356 Opts.RelaxAll = Args.hasArg(OPT_mrelax_all); 357 Opts.OmitLeafFramePointer = Args.hasArg(OPT_momit_leaf_frame_pointer); 358 Opts.SaveTempLabels = Args.hasArg(OPT_msave_temp_labels); 359 Opts.NoDwarf2CFIAsm = Args.hasArg(OPT_fno_dwarf2_cfi_asm); 360 Opts.NoDwarfDirectoryAsm = Args.hasArg(OPT_fno_dwarf_directory_asm); 361 Opts.SoftFloat = Args.hasArg(OPT_msoft_float); 362 Opts.StrictEnums = Args.hasArg(OPT_fstrict_enums); 363 Opts.UnsafeFPMath = Args.hasArg(OPT_menable_unsafe_fp_math) || 364 Args.hasArg(OPT_cl_unsafe_math_optimizations) || 365 Args.hasArg(OPT_cl_fast_relaxed_math); 366 Opts.UnwindTables = Args.hasArg(OPT_munwind_tables); 367 Opts.RelocationModel = Args.getLastArgValue(OPT_mrelocation_model, "pic"); 368 Opts.TrapFuncName = Args.getLastArgValue(OPT_ftrap_function_EQ); 369 Opts.UseInitArray = Args.hasArg(OPT_fuse_init_array); 370 371 Opts.FunctionSections = Args.hasArg(OPT_ffunction_sections); 372 Opts.DataSections = Args.hasArg(OPT_fdata_sections); 373 374 Opts.MainFileName = Args.getLastArgValue(OPT_main_file_name); 375 Opts.VerifyModule = !Args.hasArg(OPT_disable_llvm_verifier); 376 Opts.SanitizeRecover = !Args.hasArg(OPT_fno_sanitize_recover); 377 378 Opts.InstrumentFunctions = Args.hasArg(OPT_finstrument_functions); 379 Opts.InstrumentForProfiling = Args.hasArg(OPT_pg); 380 Opts.EmitGcovArcs = Args.hasArg(OPT_femit_coverage_data); 381 Opts.EmitGcovNotes = Args.hasArg(OPT_femit_coverage_notes); 382 Opts.EmitOpenCLArgMetadata = Args.hasArg(OPT_cl_kernel_arg_info); 383 Opts.CoverageFile = Args.getLastArgValue(OPT_coverage_file); 384 Opts.DebugCompilationDir = Args.getLastArgValue(OPT_fdebug_compilation_dir); 385 Opts.LinkBitcodeFile = Args.getLastArgValue(OPT_mlink_bitcode_file); 386 Opts.SanitizerBlacklistFile = Args.getLastArgValue(OPT_fsanitize_blacklist); 387 Opts.SanitizeMemoryTrackOrigins = 388 Args.hasArg(OPT_fsanitize_memory_track_origins); 389 Opts.SanitizeAddressZeroBaseShadow = 390 Args.hasArg(OPT_fsanitize_address_zero_base_shadow); 391 Opts.SanitizeUndefinedTrapOnError = 392 Args.hasArg(OPT_fsanitize_undefined_trap_on_error); 393 Opts.SSPBufferSize = 394 Args.getLastArgIntValue(OPT_stack_protector_buffer_size, 8, Diags); 395 Opts.StackRealignment = Args.hasArg(OPT_mstackrealign); 396 if (Arg *A = Args.getLastArg(OPT_mstack_alignment)) { 397 StringRef Val = A->getValue(); 398 unsigned StackAlignment = Opts.StackAlignment; 399 Val.getAsInteger(10, StackAlignment); 400 Opts.StackAlignment = StackAlignment; 401 } 402 403 if (Arg *A = Args.getLastArg(OPT_fobjc_dispatch_method_EQ)) { 404 StringRef Name = A->getValue(); 405 unsigned Method = llvm::StringSwitch<unsigned>(Name) 406 .Case("legacy", CodeGenOptions::Legacy) 407 .Case("non-legacy", CodeGenOptions::NonLegacy) 408 .Case("mixed", CodeGenOptions::Mixed) 409 .Default(~0U); 410 if (Method == ~0U) { 411 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Name; 412 Success = false; 413 } else { 414 Opts.setObjCDispatchMethod( 415 static_cast<CodeGenOptions::ObjCDispatchMethodKind>(Method)); 416 } 417 } 418 419 if (Arg *A = Args.getLastArg(OPT_ftlsmodel_EQ)) { 420 StringRef Name = A->getValue(); 421 unsigned Model = llvm::StringSwitch<unsigned>(Name) 422 .Case("global-dynamic", CodeGenOptions::GeneralDynamicTLSModel) 423 .Case("local-dynamic", CodeGenOptions::LocalDynamicTLSModel) 424 .Case("initial-exec", CodeGenOptions::InitialExecTLSModel) 425 .Case("local-exec", CodeGenOptions::LocalExecTLSModel) 426 .Default(~0U); 427 if (Model == ~0U) { 428 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Name; 429 Success = false; 430 } else { 431 Opts.setDefaultTLSModel(static_cast<CodeGenOptions::TLSModel>(Model)); 432 } 433 } 434 435 if (Arg *A = Args.getLastArg(OPT_ffp_contract)) { 436 StringRef Val = A->getValue(); 437 if (Val == "fast") 438 Opts.setFPContractMode(CodeGenOptions::FPC_Fast); 439 else if (Val == "on") 440 Opts.setFPContractMode(CodeGenOptions::FPC_On); 441 else if (Val == "off") 442 Opts.setFPContractMode(CodeGenOptions::FPC_Off); 443 else 444 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Val; 445 } 446 447 return Success; 448 } 449 450 static void ParseDependencyOutputArgs(DependencyOutputOptions &Opts, 451 ArgList &Args) { 452 using namespace options; 453 Opts.OutputFile = Args.getLastArgValue(OPT_dependency_file); 454 Opts.Targets = Args.getAllArgValues(OPT_MT); 455 Opts.IncludeSystemHeaders = Args.hasArg(OPT_sys_header_deps); 456 Opts.UsePhonyTargets = Args.hasArg(OPT_MP); 457 Opts.ShowHeaderIncludes = Args.hasArg(OPT_H); 458 Opts.HeaderIncludeOutputFile = Args.getLastArgValue(OPT_header_include_file); 459 Opts.AddMissingHeaderDeps = Args.hasArg(OPT_MG); 460 Opts.DOTOutputFile = Args.getLastArgValue(OPT_dependency_dot); 461 } 462 463 bool clang::ParseDiagnosticArgs(DiagnosticOptions &Opts, ArgList &Args, 464 DiagnosticsEngine *Diags) { 465 using namespace options; 466 bool Success = true; 467 468 Opts.DiagnosticLogFile = Args.getLastArgValue(OPT_diagnostic_log_file); 469 Opts.DiagnosticSerializationFile = 470 Args.getLastArgValue(OPT_diagnostic_serialized_file); 471 Opts.IgnoreWarnings = Args.hasArg(OPT_w); 472 Opts.NoRewriteMacros = Args.hasArg(OPT_Wno_rewrite_macros); 473 Opts.Pedantic = Args.hasArg(OPT_pedantic); 474 Opts.PedanticErrors = Args.hasArg(OPT_pedantic_errors); 475 Opts.ShowCarets = !Args.hasArg(OPT_fno_caret_diagnostics); 476 Opts.ShowColors = Args.hasArg(OPT_fcolor_diagnostics); 477 Opts.ShowColumn = Args.hasFlag(OPT_fshow_column, 478 OPT_fno_show_column, 479 /*Default=*/true); 480 Opts.ShowFixits = !Args.hasArg(OPT_fno_diagnostics_fixit_info); 481 Opts.ShowLocation = !Args.hasArg(OPT_fno_show_source_location); 482 Opts.ShowOptionNames = Args.hasArg(OPT_fdiagnostics_show_option); 483 484 // Default behavior is to not to show note include stacks. 485 Opts.ShowNoteIncludeStack = false; 486 if (Arg *A = Args.getLastArg(OPT_fdiagnostics_show_note_include_stack, 487 OPT_fno_diagnostics_show_note_include_stack)) 488 if (A->getOption().matches(OPT_fdiagnostics_show_note_include_stack)) 489 Opts.ShowNoteIncludeStack = true; 490 491 StringRef ShowOverloads = 492 Args.getLastArgValue(OPT_fshow_overloads_EQ, "all"); 493 if (ShowOverloads == "best") 494 Opts.setShowOverloads(Ovl_Best); 495 else if (ShowOverloads == "all") 496 Opts.setShowOverloads(Ovl_All); 497 else { 498 Success = false; 499 if (Diags) 500 Diags->Report(diag::err_drv_invalid_value) 501 << Args.getLastArg(OPT_fshow_overloads_EQ)->getAsString(Args) 502 << ShowOverloads; 503 } 504 505 StringRef ShowCategory = 506 Args.getLastArgValue(OPT_fdiagnostics_show_category, "none"); 507 if (ShowCategory == "none") 508 Opts.ShowCategories = 0; 509 else if (ShowCategory == "id") 510 Opts.ShowCategories = 1; 511 else if (ShowCategory == "name") 512 Opts.ShowCategories = 2; 513 else { 514 Success = false; 515 if (Diags) 516 Diags->Report(diag::err_drv_invalid_value) 517 << Args.getLastArg(OPT_fdiagnostics_show_category)->getAsString(Args) 518 << ShowCategory; 519 } 520 521 StringRef Format = 522 Args.getLastArgValue(OPT_fdiagnostics_format, "clang"); 523 if (Format == "clang") 524 Opts.setFormat(DiagnosticOptions::Clang); 525 else if (Format == "msvc") 526 Opts.setFormat(DiagnosticOptions::Msvc); 527 else if (Format == "vi") 528 Opts.setFormat(DiagnosticOptions::Vi); 529 else { 530 Success = false; 531 if (Diags) 532 Diags->Report(diag::err_drv_invalid_value) 533 << Args.getLastArg(OPT_fdiagnostics_format)->getAsString(Args) 534 << Format; 535 } 536 537 Opts.ShowSourceRanges = Args.hasArg(OPT_fdiagnostics_print_source_range_info); 538 Opts.ShowParseableFixits = Args.hasArg(OPT_fdiagnostics_parseable_fixits); 539 Opts.ShowPresumedLoc = !Args.hasArg(OPT_fno_diagnostics_use_presumed_location); 540 Opts.VerifyDiagnostics = Args.hasArg(OPT_verify); 541 Opts.ElideType = !Args.hasArg(OPT_fno_elide_type); 542 Opts.ShowTemplateTree = Args.hasArg(OPT_fdiagnostics_show_template_tree); 543 Opts.ErrorLimit = Args.getLastArgIntValue(OPT_ferror_limit, 0, Diags); 544 Opts.MacroBacktraceLimit 545 = Args.getLastArgIntValue(OPT_fmacro_backtrace_limit, 546 DiagnosticOptions::DefaultMacroBacktraceLimit, Diags); 547 Opts.TemplateBacktraceLimit 548 = Args.getLastArgIntValue(OPT_ftemplate_backtrace_limit, 549 DiagnosticOptions::DefaultTemplateBacktraceLimit, 550 Diags); 551 Opts.ConstexprBacktraceLimit 552 = Args.getLastArgIntValue(OPT_fconstexpr_backtrace_limit, 553 DiagnosticOptions::DefaultConstexprBacktraceLimit, 554 Diags); 555 Opts.TabStop = Args.getLastArgIntValue(OPT_ftabstop, 556 DiagnosticOptions::DefaultTabStop, Diags); 557 if (Opts.TabStop == 0 || Opts.TabStop > DiagnosticOptions::MaxTabStop) { 558 Opts.TabStop = DiagnosticOptions::DefaultTabStop; 559 if (Diags) 560 Diags->Report(diag::warn_ignoring_ftabstop_value) 561 << Opts.TabStop << DiagnosticOptions::DefaultTabStop; 562 } 563 Opts.MessageLength = Args.getLastArgIntValue(OPT_fmessage_length, 0, Diags); 564 addWarningArgs(Args, Opts.Warnings); 565 566 return Success; 567 } 568 569 static void ParseFileSystemArgs(FileSystemOptions &Opts, ArgList &Args) { 570 Opts.WorkingDir = Args.getLastArgValue(OPT_working_directory); 571 } 572 573 static InputKind ParseFrontendArgs(FrontendOptions &Opts, ArgList &Args, 574 DiagnosticsEngine &Diags) { 575 using namespace options; 576 Opts.ProgramAction = frontend::ParseSyntaxOnly; 577 if (const Arg *A = Args.getLastArg(OPT_Action_Group)) { 578 switch (A->getOption().getID()) { 579 default: 580 llvm_unreachable("Invalid option in group!"); 581 case OPT_ast_list: 582 Opts.ProgramAction = frontend::ASTDeclList; break; 583 case OPT_ast_dump: 584 Opts.ProgramAction = frontend::ASTDump; break; 585 case OPT_ast_dump_xml: 586 Opts.ProgramAction = frontend::ASTDumpXML; break; 587 case OPT_ast_print: 588 Opts.ProgramAction = frontend::ASTPrint; break; 589 case OPT_ast_view: 590 Opts.ProgramAction = frontend::ASTView; break; 591 case OPT_dump_raw_tokens: 592 Opts.ProgramAction = frontend::DumpRawTokens; break; 593 case OPT_dump_tokens: 594 Opts.ProgramAction = frontend::DumpTokens; break; 595 case OPT_S: 596 Opts.ProgramAction = frontend::EmitAssembly; break; 597 case OPT_emit_llvm_bc: 598 Opts.ProgramAction = frontend::EmitBC; break; 599 case OPT_emit_html: 600 Opts.ProgramAction = frontend::EmitHTML; break; 601 case OPT_emit_llvm: 602 Opts.ProgramAction = frontend::EmitLLVM; break; 603 case OPT_emit_llvm_only: 604 Opts.ProgramAction = frontend::EmitLLVMOnly; break; 605 case OPT_emit_codegen_only: 606 Opts.ProgramAction = frontend::EmitCodeGenOnly; break; 607 case OPT_emit_obj: 608 Opts.ProgramAction = frontend::EmitObj; break; 609 case OPT_fixit_EQ: 610 Opts.FixItSuffix = A->getValue(); 611 // fall-through! 612 case OPT_fixit: 613 Opts.ProgramAction = frontend::FixIt; break; 614 case OPT_emit_module: 615 Opts.ProgramAction = frontend::GenerateModule; break; 616 case OPT_emit_pch: 617 Opts.ProgramAction = frontend::GeneratePCH; break; 618 case OPT_emit_pth: 619 Opts.ProgramAction = frontend::GeneratePTH; break; 620 case OPT_init_only: 621 Opts.ProgramAction = frontend::InitOnly; break; 622 case OPT_fsyntax_only: 623 Opts.ProgramAction = frontend::ParseSyntaxOnly; break; 624 case OPT_print_decl_contexts: 625 Opts.ProgramAction = frontend::PrintDeclContext; break; 626 case OPT_print_preamble: 627 Opts.ProgramAction = frontend::PrintPreamble; break; 628 case OPT_E: 629 Opts.ProgramAction = frontend::PrintPreprocessedInput; break; 630 case OPT_rewrite_macros: 631 Opts.ProgramAction = frontend::RewriteMacros; break; 632 case OPT_rewrite_objc: 633 Opts.ProgramAction = frontend::RewriteObjC; break; 634 case OPT_rewrite_test: 635 Opts.ProgramAction = frontend::RewriteTest; break; 636 case OPT_analyze: 637 Opts.ProgramAction = frontend::RunAnalysis; break; 638 case OPT_migrate: 639 Opts.ProgramAction = frontend::MigrateSource; break; 640 case OPT_Eonly: 641 Opts.ProgramAction = frontend::RunPreprocessorOnly; break; 642 } 643 } 644 645 if (const Arg* A = Args.getLastArg(OPT_plugin)) { 646 Opts.Plugins.push_back(A->getValue(0)); 647 Opts.ProgramAction = frontend::PluginAction; 648 Opts.ActionName = A->getValue(); 649 650 for (arg_iterator it = Args.filtered_begin(OPT_plugin_arg), 651 end = Args.filtered_end(); it != end; ++it) { 652 if ((*it)->getValue(0) == Opts.ActionName) 653 Opts.PluginArgs.push_back((*it)->getValue(1)); 654 } 655 } 656 657 Opts.AddPluginActions = Args.getAllArgValues(OPT_add_plugin); 658 Opts.AddPluginArgs.resize(Opts.AddPluginActions.size()); 659 for (int i = 0, e = Opts.AddPluginActions.size(); i != e; ++i) { 660 for (arg_iterator it = Args.filtered_begin(OPT_plugin_arg), 661 end = Args.filtered_end(); it != end; ++it) { 662 if ((*it)->getValue(0) == Opts.AddPluginActions[i]) 663 Opts.AddPluginArgs[i].push_back((*it)->getValue(1)); 664 } 665 } 666 667 if (const Arg *A = Args.getLastArg(OPT_code_completion_at)) { 668 Opts.CodeCompletionAt = 669 ParsedSourceLocation::FromString(A->getValue()); 670 if (Opts.CodeCompletionAt.FileName.empty()) 671 Diags.Report(diag::err_drv_invalid_value) 672 << A->getAsString(Args) << A->getValue(); 673 } 674 Opts.DisableFree = Args.hasArg(OPT_disable_free); 675 676 Opts.OutputFile = Args.getLastArgValue(OPT_o); 677 Opts.Plugins = Args.getAllArgValues(OPT_load); 678 Opts.RelocatablePCH = Args.hasArg(OPT_relocatable_pch); 679 Opts.ShowHelp = Args.hasArg(OPT_help); 680 Opts.ShowStats = Args.hasArg(OPT_print_stats); 681 Opts.ShowTimers = Args.hasArg(OPT_ftime_report); 682 Opts.ShowVersion = Args.hasArg(OPT_version); 683 Opts.ASTMergeFiles = Args.getAllArgValues(OPT_ast_merge); 684 Opts.LLVMArgs = Args.getAllArgValues(OPT_mllvm); 685 Opts.FixWhatYouCan = Args.hasArg(OPT_fix_what_you_can); 686 Opts.FixOnlyWarnings = Args.hasArg(OPT_fix_only_warnings); 687 Opts.FixAndRecompile = Args.hasArg(OPT_fixit_recompile); 688 Opts.FixToTemporaries = Args.hasArg(OPT_fixit_to_temp); 689 Opts.ASTDumpFilter = Args.getLastArgValue(OPT_ast_dump_filter); 690 Opts.UseGlobalModuleIndex = !Args.hasArg(OPT_fno_modules_global_index); 691 Opts.GenerateGlobalModuleIndex = Opts.UseGlobalModuleIndex; 692 693 Opts.CodeCompleteOpts.IncludeMacros 694 = Args.hasArg(OPT_code_completion_macros); 695 Opts.CodeCompleteOpts.IncludeCodePatterns 696 = Args.hasArg(OPT_code_completion_patterns); 697 Opts.CodeCompleteOpts.IncludeGlobals 698 = !Args.hasArg(OPT_no_code_completion_globals); 699 Opts.CodeCompleteOpts.IncludeBriefComments 700 = Args.hasArg(OPT_code_completion_brief_comments); 701 702 Opts.OverrideRecordLayoutsFile 703 = Args.getLastArgValue(OPT_foverride_record_layout_EQ); 704 if (const Arg *A = Args.getLastArg(OPT_arcmt_check, 705 OPT_arcmt_modify, 706 OPT_arcmt_migrate)) { 707 switch (A->getOption().getID()) { 708 default: 709 llvm_unreachable("missed a case"); 710 case OPT_arcmt_check: 711 Opts.ARCMTAction = FrontendOptions::ARCMT_Check; 712 break; 713 case OPT_arcmt_modify: 714 Opts.ARCMTAction = FrontendOptions::ARCMT_Modify; 715 break; 716 case OPT_arcmt_migrate: 717 Opts.ARCMTAction = FrontendOptions::ARCMT_Migrate; 718 break; 719 } 720 } 721 Opts.MTMigrateDir = Args.getLastArgValue(OPT_mt_migrate_directory); 722 Opts.ARCMTMigrateReportOut 723 = Args.getLastArgValue(OPT_arcmt_migrate_report_output); 724 Opts.ARCMTMigrateEmitARCErrors 725 = Args.hasArg(OPT_arcmt_migrate_emit_arc_errors); 726 727 if (Args.hasArg(OPT_objcmt_migrate_literals)) 728 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_Literals; 729 if (Args.hasArg(OPT_objcmt_migrate_subscripting)) 730 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_Subscripting; 731 732 if (Opts.ARCMTAction != FrontendOptions::ARCMT_None && 733 Opts.ObjCMTAction != FrontendOptions::ObjCMT_None) { 734 Diags.Report(diag::err_drv_argument_not_allowed_with) 735 << "ARC migration" << "ObjC migration"; 736 } 737 738 InputKind DashX = IK_None; 739 if (const Arg *A = Args.getLastArg(OPT_x)) { 740 DashX = llvm::StringSwitch<InputKind>(A->getValue()) 741 .Case("c", IK_C) 742 .Case("cl", IK_OpenCL) 743 .Case("cuda", IK_CUDA) 744 .Case("c++", IK_CXX) 745 .Case("objective-c", IK_ObjC) 746 .Case("objective-c++", IK_ObjCXX) 747 .Case("cpp-output", IK_PreprocessedC) 748 .Case("assembler-with-cpp", IK_Asm) 749 .Case("c++-cpp-output", IK_PreprocessedCXX) 750 .Case("objective-c-cpp-output", IK_PreprocessedObjC) 751 .Case("objc-cpp-output", IK_PreprocessedObjC) 752 .Case("objective-c++-cpp-output", IK_PreprocessedObjCXX) 753 .Case("objc++-cpp-output", IK_PreprocessedObjCXX) 754 .Case("c-header", IK_C) 755 .Case("cl-header", IK_OpenCL) 756 .Case("objective-c-header", IK_ObjC) 757 .Case("c++-header", IK_CXX) 758 .Case("objective-c++-header", IK_ObjCXX) 759 .Case("ast", IK_AST) 760 .Case("ir", IK_LLVM_IR) 761 .Default(IK_None); 762 if (DashX == IK_None) 763 Diags.Report(diag::err_drv_invalid_value) 764 << A->getAsString(Args) << A->getValue(); 765 } 766 767 // '-' is the default input if none is given. 768 std::vector<std::string> Inputs = Args.getAllArgValues(OPT_INPUT); 769 Opts.Inputs.clear(); 770 if (Inputs.empty()) 771 Inputs.push_back("-"); 772 for (unsigned i = 0, e = Inputs.size(); i != e; ++i) { 773 InputKind IK = DashX; 774 if (IK == IK_None) { 775 IK = FrontendOptions::getInputKindForExtension( 776 StringRef(Inputs[i]).rsplit('.').second); 777 // FIXME: Remove this hack. 778 if (i == 0) 779 DashX = IK; 780 } 781 Opts.Inputs.push_back(FrontendInputFile(Inputs[i], IK)); 782 } 783 784 return DashX; 785 } 786 787 std::string CompilerInvocation::GetResourcesPath(const char *Argv0, 788 void *MainAddr) { 789 llvm::sys::Path P = llvm::sys::Path::GetMainExecutable(Argv0, MainAddr); 790 791 if (!P.isEmpty()) { 792 P.eraseComponent(); // Remove /clang from foo/bin/clang 793 P.eraseComponent(); // Remove /bin from foo/bin 794 795 // Get foo/lib/clang/<version>/include 796 P.appendComponent("lib"); 797 P.appendComponent("clang"); 798 P.appendComponent(CLANG_VERSION_STRING); 799 } 800 801 return P.str(); 802 } 803 804 static void ParseHeaderSearchArgs(HeaderSearchOptions &Opts, ArgList &Args) { 805 using namespace options; 806 Opts.Sysroot = Args.getLastArgValue(OPT_isysroot, "/"); 807 Opts.Verbose = Args.hasArg(OPT_v); 808 Opts.UseBuiltinIncludes = !Args.hasArg(OPT_nobuiltininc); 809 Opts.UseStandardSystemIncludes = !Args.hasArg(OPT_nostdsysteminc); 810 Opts.UseStandardCXXIncludes = !Args.hasArg(OPT_nostdincxx); 811 if (const Arg *A = Args.getLastArg(OPT_stdlib_EQ)) 812 Opts.UseLibcxx = (strcmp(A->getValue(), "libc++") == 0); 813 Opts.ResourceDir = Args.getLastArgValue(OPT_resource_dir); 814 Opts.ModuleCachePath = Args.getLastArgValue(OPT_fmodules_cache_path); 815 Opts.DisableModuleHash = Args.hasArg(OPT_fdisable_module_hash); 816 817 for (arg_iterator it = Args.filtered_begin(OPT_fmodules_ignore_macro), 818 ie = Args.filtered_end(); it != ie; ++it) { 819 StringRef MacroDef = (*it)->getValue(); 820 Opts.ModulesIgnoreMacros.insert(MacroDef.split('=').first); 821 } 822 823 // Add -I..., -F..., and -index-header-map options in order. 824 bool IsIndexHeaderMap = false; 825 for (arg_iterator it = Args.filtered_begin(OPT_I, OPT_F, 826 OPT_index_header_map), 827 ie = Args.filtered_end(); it != ie; ++it) { 828 if ((*it)->getOption().matches(OPT_index_header_map)) { 829 // -index-header-map applies to the next -I or -F. 830 IsIndexHeaderMap = true; 831 continue; 832 } 833 834 frontend::IncludeDirGroup Group 835 = IsIndexHeaderMap? frontend::IndexHeaderMap : frontend::Angled; 836 837 Opts.AddPath((*it)->getValue(), Group, 838 /*IsFramework=*/ (*it)->getOption().matches(OPT_F), true); 839 IsIndexHeaderMap = false; 840 } 841 842 // Add -iprefix/-iwithprefix/-iwithprefixbefore options. 843 StringRef Prefix = ""; // FIXME: This isn't the correct default prefix. 844 for (arg_iterator it = Args.filtered_begin(OPT_iprefix, OPT_iwithprefix, 845 OPT_iwithprefixbefore), 846 ie = Args.filtered_end(); it != ie; ++it) { 847 const Arg *A = *it; 848 if (A->getOption().matches(OPT_iprefix)) 849 Prefix = A->getValue(); 850 else if (A->getOption().matches(OPT_iwithprefix)) 851 Opts.AddPath(Prefix.str() + A->getValue(), 852 frontend::After, false, true); 853 else 854 Opts.AddPath(Prefix.str() + A->getValue(), 855 frontend::Angled, false, true); 856 } 857 858 for (arg_iterator it = Args.filtered_begin(OPT_idirafter), 859 ie = Args.filtered_end(); it != ie; ++it) 860 Opts.AddPath((*it)->getValue(), frontend::After, false, true); 861 for (arg_iterator it = Args.filtered_begin(OPT_iquote), 862 ie = Args.filtered_end(); it != ie; ++it) 863 Opts.AddPath((*it)->getValue(), frontend::Quoted, false, true); 864 for (arg_iterator it = Args.filtered_begin(OPT_isystem, 865 OPT_iwithsysroot), ie = Args.filtered_end(); it != ie; ++it) 866 Opts.AddPath((*it)->getValue(), frontend::System, false, 867 !(*it)->getOption().matches(OPT_iwithsysroot)); 868 for (arg_iterator it = Args.filtered_begin(OPT_iframework), 869 ie = Args.filtered_end(); it != ie; ++it) 870 Opts.AddPath((*it)->getValue(), frontend::System, true, true); 871 872 // Add the paths for the various language specific isystem flags. 873 for (arg_iterator it = Args.filtered_begin(OPT_c_isystem), 874 ie = Args.filtered_end(); it != ie; ++it) 875 Opts.AddPath((*it)->getValue(), frontend::CSystem, false, true); 876 for (arg_iterator it = Args.filtered_begin(OPT_cxx_isystem), 877 ie = Args.filtered_end(); it != ie; ++it) 878 Opts.AddPath((*it)->getValue(), frontend::CXXSystem, false, true); 879 for (arg_iterator it = Args.filtered_begin(OPT_objc_isystem), 880 ie = Args.filtered_end(); it != ie; ++it) 881 Opts.AddPath((*it)->getValue(), frontend::ObjCSystem, false,true); 882 for (arg_iterator it = Args.filtered_begin(OPT_objcxx_isystem), 883 ie = Args.filtered_end(); it != ie; ++it) 884 Opts.AddPath((*it)->getValue(), frontend::ObjCXXSystem, false, true); 885 886 // Add the internal paths from a driver that detects standard include paths. 887 for (arg_iterator I = Args.filtered_begin(OPT_internal_isystem, 888 OPT_internal_externc_isystem), 889 E = Args.filtered_end(); 890 I != E; ++I) { 891 frontend::IncludeDirGroup Group = frontend::System; 892 if ((*I)->getOption().matches(OPT_internal_externc_isystem)) 893 Group = frontend::ExternCSystem; 894 Opts.AddPath((*I)->getValue(), Group, false, true); 895 } 896 897 // Add the path prefixes which are implicitly treated as being system headers. 898 for (arg_iterator I = Args.filtered_begin(OPT_isystem_prefix, 899 OPT_ino_system_prefix), 900 E = Args.filtered_end(); 901 I != E; ++I) 902 Opts.AddSystemHeaderPrefix((*I)->getValue(), 903 (*I)->getOption().matches(OPT_isystem_prefix)); 904 } 905 906 void CompilerInvocation::setLangDefaults(LangOptions &Opts, InputKind IK, 907 LangStandard::Kind LangStd) { 908 // Set some properties which depend solely on the input kind; it would be nice 909 // to move these to the language standard, and have the driver resolve the 910 // input kind + language standard. 911 if (IK == IK_Asm) { 912 Opts.AsmPreprocessor = 1; 913 } else if (IK == IK_ObjC || 914 IK == IK_ObjCXX || 915 IK == IK_PreprocessedObjC || 916 IK == IK_PreprocessedObjCXX) { 917 Opts.ObjC1 = Opts.ObjC2 = 1; 918 } 919 920 if (LangStd == LangStandard::lang_unspecified) { 921 // Based on the base language, pick one. 922 switch (IK) { 923 case IK_None: 924 case IK_AST: 925 case IK_LLVM_IR: 926 llvm_unreachable("Invalid input kind!"); 927 case IK_OpenCL: 928 LangStd = LangStandard::lang_opencl; 929 break; 930 case IK_CUDA: 931 LangStd = LangStandard::lang_cuda; 932 break; 933 case IK_Asm: 934 case IK_C: 935 case IK_PreprocessedC: 936 case IK_ObjC: 937 case IK_PreprocessedObjC: 938 LangStd = LangStandard::lang_gnu99; 939 break; 940 case IK_CXX: 941 case IK_PreprocessedCXX: 942 case IK_ObjCXX: 943 case IK_PreprocessedObjCXX: 944 LangStd = LangStandard::lang_gnucxx98; 945 break; 946 } 947 } 948 949 const LangStandard &Std = LangStandard::getLangStandardForKind(LangStd); 950 Opts.LineComment = Std.hasLineComments(); 951 Opts.C99 = Std.isC99(); 952 Opts.C11 = Std.isC11(); 953 Opts.CPlusPlus = Std.isCPlusPlus(); 954 Opts.CPlusPlus11 = Std.isCPlusPlus11(); 955 Opts.CPlusPlus1y = Std.isCPlusPlus1y(); 956 Opts.Digraphs = Std.hasDigraphs(); 957 Opts.GNUMode = Std.isGNUMode(); 958 Opts.GNUInline = !Std.isC99(); 959 Opts.HexFloats = Std.hasHexFloats(); 960 Opts.ImplicitInt = Std.hasImplicitInt(); 961 962 // Set OpenCL Version. 963 if (LangStd == LangStandard::lang_opencl) { 964 Opts.OpenCL = 1; 965 Opts.OpenCLVersion = 100; 966 } 967 else if (LangStd == LangStandard::lang_opencl11) { 968 Opts.OpenCL = 1; 969 Opts.OpenCLVersion = 110; 970 } 971 else if (LangStd == LangStandard::lang_opencl12) { 972 Opts.OpenCL = 1; 973 Opts.OpenCLVersion = 120; 974 } 975 976 // OpenCL has some additional defaults. 977 if (Opts.OpenCL) { 978 Opts.AltiVec = 0; 979 Opts.CXXOperatorNames = 1; 980 Opts.LaxVectorConversions = 0; 981 Opts.DefaultFPContract = 1; 982 Opts.NativeHalfType = 1; 983 } 984 985 if (LangStd == LangStandard::lang_cuda) 986 Opts.CUDA = 1; 987 988 // OpenCL and C++ both have bool, true, false keywords. 989 Opts.Bool = Opts.OpenCL || Opts.CPlusPlus; 990 991 // C++ has wchar_t keyword. 992 Opts.WChar = Opts.CPlusPlus; 993 994 Opts.GNUKeywords = Opts.GNUMode; 995 Opts.CXXOperatorNames = Opts.CPlusPlus; 996 997 // Mimicing gcc's behavior, trigraphs are only enabled if -trigraphs 998 // is specified, or -std is set to a conforming mode. 999 Opts.Trigraphs = !Opts.GNUMode; 1000 1001 Opts.DollarIdents = !Opts.AsmPreprocessor; 1002 } 1003 1004 static void ParseLangArgs(LangOptions &Opts, ArgList &Args, InputKind IK, 1005 DiagnosticsEngine &Diags) { 1006 // FIXME: Cleanup per-file based stuff. 1007 LangStandard::Kind LangStd = LangStandard::lang_unspecified; 1008 if (const Arg *A = Args.getLastArg(OPT_std_EQ)) { 1009 LangStd = llvm::StringSwitch<LangStandard::Kind>(A->getValue()) 1010 #define LANGSTANDARD(id, name, desc, features) \ 1011 .Case(name, LangStandard::lang_##id) 1012 #include "clang/Frontend/LangStandards.def" 1013 .Default(LangStandard::lang_unspecified); 1014 if (LangStd == LangStandard::lang_unspecified) 1015 Diags.Report(diag::err_drv_invalid_value) 1016 << A->getAsString(Args) << A->getValue(); 1017 else { 1018 // Valid standard, check to make sure language and standard are compatable. 1019 const LangStandard &Std = LangStandard::getLangStandardForKind(LangStd); 1020 switch (IK) { 1021 case IK_C: 1022 case IK_ObjC: 1023 case IK_PreprocessedC: 1024 case IK_PreprocessedObjC: 1025 if (!(Std.isC89() || Std.isC99())) 1026 Diags.Report(diag::err_drv_argument_not_allowed_with) 1027 << A->getAsString(Args) << "C/ObjC"; 1028 break; 1029 case IK_CXX: 1030 case IK_ObjCXX: 1031 case IK_PreprocessedCXX: 1032 case IK_PreprocessedObjCXX: 1033 if (!Std.isCPlusPlus()) 1034 Diags.Report(diag::err_drv_argument_not_allowed_with) 1035 << A->getAsString(Args) << "C++/ObjC++"; 1036 break; 1037 case IK_OpenCL: 1038 if (!Std.isC99()) 1039 Diags.Report(diag::err_drv_argument_not_allowed_with) 1040 << A->getAsString(Args) << "OpenCL"; 1041 break; 1042 case IK_CUDA: 1043 if (!Std.isCPlusPlus()) 1044 Diags.Report(diag::err_drv_argument_not_allowed_with) 1045 << A->getAsString(Args) << "CUDA"; 1046 break; 1047 default: 1048 break; 1049 } 1050 } 1051 } 1052 1053 // -cl-std only applies for OpenCL language standards. 1054 // Override the -std option in this case. 1055 if (const Arg *A = Args.getLastArg(OPT_cl_std_EQ)) { 1056 LangStandard::Kind OpenCLLangStd 1057 = llvm::StringSwitch<LangStandard::Kind>(A->getValue()) 1058 .Case("CL", LangStandard::lang_opencl) 1059 .Case("CL1.1", LangStandard::lang_opencl11) 1060 .Case("CL1.2", LangStandard::lang_opencl12) 1061 .Default(LangStandard::lang_unspecified); 1062 1063 if (OpenCLLangStd == LangStandard::lang_unspecified) { 1064 Diags.Report(diag::err_drv_invalid_value) 1065 << A->getAsString(Args) << A->getValue(); 1066 } 1067 else 1068 LangStd = OpenCLLangStd; 1069 } 1070 1071 CompilerInvocation::setLangDefaults(Opts, IK, LangStd); 1072 1073 // We abuse '-f[no-]gnu-keywords' to force overriding all GNU-extension 1074 // keywords. This behavior is provided by GCC's poorly named '-fasm' flag, 1075 // while a subset (the non-C++ GNU keywords) is provided by GCC's 1076 // '-fgnu-keywords'. Clang conflates the two for simplicity under the single 1077 // name, as it doesn't seem a useful distinction. 1078 Opts.GNUKeywords = Args.hasFlag(OPT_fgnu_keywords, OPT_fno_gnu_keywords, 1079 Opts.GNUKeywords); 1080 1081 if (Args.hasArg(OPT_fno_operator_names)) 1082 Opts.CXXOperatorNames = 0; 1083 1084 if (Opts.ObjC1) { 1085 if (Arg *arg = Args.getLastArg(OPT_fobjc_runtime_EQ)) { 1086 StringRef value = arg->getValue(); 1087 if (Opts.ObjCRuntime.tryParse(value)) 1088 Diags.Report(diag::err_drv_unknown_objc_runtime) << value; 1089 } 1090 1091 if (Args.hasArg(OPT_fobjc_gc_only)) 1092 Opts.setGC(LangOptions::GCOnly); 1093 else if (Args.hasArg(OPT_fobjc_gc)) 1094 Opts.setGC(LangOptions::HybridGC); 1095 else if (Args.hasArg(OPT_fobjc_arc)) { 1096 Opts.ObjCAutoRefCount = 1; 1097 if (!Opts.ObjCRuntime.allowsARC()) 1098 Diags.Report(diag::err_arc_unsupported_on_runtime); 1099 1100 // Only set ObjCARCWeak if ARC is enabled. 1101 if (Args.hasArg(OPT_fobjc_runtime_has_weak)) 1102 Opts.ObjCARCWeak = 1; 1103 else 1104 Opts.ObjCARCWeak = Opts.ObjCRuntime.allowsWeak(); 1105 } 1106 1107 if (Args.hasArg(OPT_fno_objc_infer_related_result_type)) 1108 Opts.ObjCInferRelatedResultType = 0; 1109 } 1110 1111 if (Args.hasArg(OPT_fgnu89_inline)) 1112 Opts.GNUInline = 1; 1113 1114 if (Args.hasArg(OPT_fapple_kext)) { 1115 if (!Opts.CPlusPlus) 1116 Diags.Report(diag::warn_c_kext); 1117 else 1118 Opts.AppleKext = 1; 1119 } 1120 1121 if (Args.hasArg(OPT_print_ivar_layout)) 1122 Opts.ObjCGCBitmapPrint = 1; 1123 if (Args.hasArg(OPT_fno_constant_cfstrings)) 1124 Opts.NoConstantCFStrings = 1; 1125 1126 if (Args.hasArg(OPT_faltivec)) 1127 Opts.AltiVec = 1; 1128 1129 if (Args.hasArg(OPT_pthread)) 1130 Opts.POSIXThreads = 1; 1131 1132 if (Args.hasArg(OPT_fdelayed_template_parsing)) 1133 Opts.DelayedTemplateParsing = 1; 1134 1135 StringRef Vis = Args.getLastArgValue(OPT_fvisibility, "default"); 1136 if (Vis == "default") 1137 Opts.setVisibilityMode(DefaultVisibility); 1138 else if (Vis == "hidden") 1139 Opts.setVisibilityMode(HiddenVisibility); 1140 else if (Vis == "protected") 1141 // FIXME: diagnose if target does not support protected visibility 1142 Opts.setVisibilityMode(ProtectedVisibility); 1143 else 1144 Diags.Report(diag::err_drv_invalid_value) 1145 << Args.getLastArg(OPT_fvisibility)->getAsString(Args) << Vis; 1146 1147 if (Args.hasArg(OPT_fvisibility_inlines_hidden)) 1148 Opts.InlineVisibilityHidden = 1; 1149 1150 if (Args.hasArg(OPT_ftrapv)) { 1151 Opts.setSignedOverflowBehavior(LangOptions::SOB_Trapping); 1152 // Set the handler, if one is specified. 1153 Opts.OverflowHandler = 1154 Args.getLastArgValue(OPT_ftrapv_handler); 1155 } 1156 else if (Args.hasArg(OPT_fwrapv)) 1157 Opts.setSignedOverflowBehavior(LangOptions::SOB_Defined); 1158 1159 if (Args.hasArg(OPT_trigraphs)) 1160 Opts.Trigraphs = 1; 1161 1162 Opts.DollarIdents = Args.hasFlag(OPT_fdollars_in_identifiers, 1163 OPT_fno_dollars_in_identifiers, 1164 Opts.DollarIdents); 1165 Opts.PascalStrings = Args.hasArg(OPT_fpascal_strings); 1166 Opts.MicrosoftExt 1167 = Args.hasArg(OPT_fms_extensions) || Args.hasArg(OPT_fms_compatibility); 1168 Opts.MicrosoftMode = Args.hasArg(OPT_fms_compatibility); 1169 Opts.AsmBlocks = Args.hasArg(OPT_fasm_blocks) || Opts.MicrosoftExt; 1170 Opts.MSCVersion = Args.getLastArgIntValue(OPT_fmsc_version, 0, Diags); 1171 Opts.Borland = Args.hasArg(OPT_fborland_extensions); 1172 Opts.WritableStrings = Args.hasArg(OPT_fwritable_strings); 1173 Opts.ConstStrings = Args.hasFlag(OPT_fconst_strings, OPT_fno_const_strings, 1174 Opts.ConstStrings); 1175 if (Args.hasArg(OPT_fno_lax_vector_conversions)) 1176 Opts.LaxVectorConversions = 0; 1177 if (Args.hasArg(OPT_fno_threadsafe_statics)) 1178 Opts.ThreadsafeStatics = 0; 1179 Opts.Exceptions = Args.hasArg(OPT_fexceptions); 1180 Opts.ObjCExceptions = Args.hasArg(OPT_fobjc_exceptions); 1181 Opts.CXXExceptions = Args.hasArg(OPT_fcxx_exceptions); 1182 Opts.SjLjExceptions = Args.hasArg(OPT_fsjlj_exceptions); 1183 Opts.TraditionalCPP = Args.hasArg(OPT_traditional_cpp); 1184 1185 Opts.RTTI = !Args.hasArg(OPT_fno_rtti); 1186 Opts.Blocks = Args.hasArg(OPT_fblocks); 1187 Opts.BlocksRuntimeOptional = Args.hasArg(OPT_fblocks_runtime_optional); 1188 Opts.Modules = Args.hasArg(OPT_fmodules); 1189 Opts.CharIsSigned = !Args.hasArg(OPT_fno_signed_char); 1190 Opts.WChar = Opts.CPlusPlus && !Args.hasArg(OPT_fno_wchar); 1191 Opts.ShortWChar = Args.hasArg(OPT_fshort_wchar); 1192 Opts.ShortEnums = Args.hasArg(OPT_fshort_enums); 1193 Opts.Freestanding = Args.hasArg(OPT_ffreestanding); 1194 Opts.NoBuiltin = Args.hasArg(OPT_fno_builtin) || Opts.Freestanding; 1195 Opts.AssumeSaneOperatorNew = !Args.hasArg(OPT_fno_assume_sane_operator_new); 1196 Opts.HeinousExtensions = Args.hasArg(OPT_fheinous_gnu_extensions); 1197 Opts.AccessControl = !Args.hasArg(OPT_fno_access_control); 1198 Opts.ElideConstructors = !Args.hasArg(OPT_fno_elide_constructors); 1199 Opts.MathErrno = Args.hasArg(OPT_fmath_errno); 1200 Opts.InstantiationDepth = Args.getLastArgIntValue(OPT_ftemplate_depth, 512, 1201 Diags); 1202 Opts.ConstexprCallDepth = Args.getLastArgIntValue(OPT_fconstexpr_depth, 512, 1203 Diags); 1204 Opts.DelayedTemplateParsing = Args.hasArg(OPT_fdelayed_template_parsing); 1205 Opts.NumLargeByValueCopy = Args.getLastArgIntValue(OPT_Wlarge_by_value_copy_EQ, 1206 0, Diags); 1207 Opts.MSBitfields = Args.hasArg(OPT_mms_bitfields); 1208 Opts.ObjCConstantStringClass = 1209 Args.getLastArgValue(OPT_fconstant_string_class); 1210 Opts.ObjCDefaultSynthProperties = 1211 Args.hasArg(OPT_fobjc_default_synthesize_properties); 1212 Opts.EncodeExtendedBlockSig = 1213 Args.hasArg(OPT_fencode_extended_block_signature); 1214 Opts.EmitAllDecls = Args.hasArg(OPT_femit_all_decls); 1215 Opts.PackStruct = Args.getLastArgIntValue(OPT_fpack_struct_EQ, 0, Diags); 1216 Opts.PICLevel = Args.getLastArgIntValue(OPT_pic_level, 0, Diags); 1217 Opts.PIELevel = Args.getLastArgIntValue(OPT_pie_level, 0, Diags); 1218 Opts.Static = Args.hasArg(OPT_static_define); 1219 Opts.DumpRecordLayoutsSimple = Args.hasArg(OPT_fdump_record_layouts_simple); 1220 Opts.DumpRecordLayouts = Opts.DumpRecordLayoutsSimple 1221 || Args.hasArg(OPT_fdump_record_layouts); 1222 Opts.DumpVTableLayouts = Args.hasArg(OPT_fdump_vtable_layouts); 1223 Opts.SpellChecking = !Args.hasArg(OPT_fno_spell_checking); 1224 Opts.NoBitFieldTypeAlign = Args.hasArg(OPT_fno_bitfield_type_align); 1225 Opts.SinglePrecisionConstants = Args.hasArg(OPT_cl_single_precision_constant); 1226 Opts.FastRelaxedMath = Args.hasArg(OPT_cl_fast_relaxed_math); 1227 Opts.MRTD = Args.hasArg(OPT_mrtd); 1228 Opts.HexagonQdsp6Compat = Args.hasArg(OPT_mqdsp6_compat); 1229 Opts.FakeAddressSpaceMap = Args.hasArg(OPT_ffake_address_space_map); 1230 Opts.ParseUnknownAnytype = Args.hasArg(OPT_funknown_anytype); 1231 Opts.DebuggerSupport = Args.hasArg(OPT_fdebugger_support); 1232 Opts.DebuggerCastResultToId = Args.hasArg(OPT_fdebugger_cast_result_to_id); 1233 Opts.DebuggerObjCLiteral = Args.hasArg(OPT_fdebugger_objc_literal); 1234 Opts.ApplePragmaPack = Args.hasArg(OPT_fapple_pragma_pack); 1235 Opts.CurrentModule = Args.getLastArgValue(OPT_fmodule_name); 1236 1237 // Check if -fopenmp is specified. 1238 Opts.OpenMP = Args.hasArg(OPT_fopenmp); 1239 1240 // Record whether the __DEPRECATED define was requested. 1241 Opts.Deprecated = Args.hasFlag(OPT_fdeprecated_macro, 1242 OPT_fno_deprecated_macro, 1243 Opts.Deprecated); 1244 1245 // FIXME: Eliminate this dependency. 1246 unsigned Opt = getOptimizationLevel(Args, IK, Diags), 1247 OptSize = getOptimizationLevelSize(Args, IK, Diags); 1248 Opts.Optimize = Opt != 0; 1249 Opts.OptimizeSize = OptSize != 0; 1250 1251 // This is the __NO_INLINE__ define, which just depends on things like the 1252 // optimization level and -fno-inline, not actually whether the backend has 1253 // inlining enabled. 1254 Opts.NoInlineDefine = !Opt || Args.hasArg(OPT_fno_inline); 1255 1256 Opts.FastMath = Args.hasArg(OPT_ffast_math); 1257 Opts.FiniteMathOnly = Args.hasArg(OPT_ffinite_math_only); 1258 1259 Opts.RetainCommentsFromSystemHeaders = 1260 Args.hasArg(OPT_fretain_comments_from_system_headers); 1261 1262 unsigned SSP = Args.getLastArgIntValue(OPT_stack_protector, 0, Diags); 1263 switch (SSP) { 1264 default: 1265 Diags.Report(diag::err_drv_invalid_value) 1266 << Args.getLastArg(OPT_stack_protector)->getAsString(Args) << SSP; 1267 break; 1268 case 0: Opts.setStackProtector(LangOptions::SSPOff); break; 1269 case 1: Opts.setStackProtector(LangOptions::SSPOn); break; 1270 case 2: Opts.setStackProtector(LangOptions::SSPReq); break; 1271 } 1272 1273 // Parse -fsanitize= arguments. 1274 std::vector<std::string> Sanitizers = Args.getAllArgValues(OPT_fsanitize_EQ); 1275 for (unsigned I = 0, N = Sanitizers.size(); I != N; ++I) { 1276 // Since the Opts.Sanitize* values are bitfields, it's a little tricky to 1277 // efficiently map string values to them. Perform the mapping indirectly: 1278 // convert strings to enumerated values, then switch over the enum to set 1279 // the right bitfield value. 1280 enum Sanitizer { 1281 #define SANITIZER(NAME, ID) \ 1282 ID, 1283 #include "clang/Basic/Sanitizers.def" 1284 Unknown 1285 }; 1286 switch (llvm::StringSwitch<unsigned>(Sanitizers[I]) 1287 #define SANITIZER(NAME, ID) \ 1288 .Case(NAME, ID) 1289 #include "clang/Basic/Sanitizers.def" 1290 .Default(Unknown)) { 1291 #define SANITIZER(NAME, ID) \ 1292 case ID: \ 1293 Opts.Sanitize.ID = true; \ 1294 break; 1295 #include "clang/Basic/Sanitizers.def" 1296 1297 case Unknown: 1298 Diags.Report(diag::err_drv_invalid_value) 1299 << "-fsanitize=" << Sanitizers[I]; 1300 break; 1301 } 1302 } 1303 } 1304 1305 static void ParsePreprocessorArgs(PreprocessorOptions &Opts, ArgList &Args, 1306 FileManager &FileMgr, 1307 DiagnosticsEngine &Diags) { 1308 using namespace options; 1309 Opts.ImplicitPCHInclude = Args.getLastArgValue(OPT_include_pch); 1310 Opts.ImplicitPTHInclude = Args.getLastArgValue(OPT_include_pth); 1311 if (const Arg *A = Args.getLastArg(OPT_token_cache)) 1312 Opts.TokenCache = A->getValue(); 1313 else 1314 Opts.TokenCache = Opts.ImplicitPTHInclude; 1315 Opts.UsePredefines = !Args.hasArg(OPT_undef); 1316 Opts.DetailedRecord = Args.hasArg(OPT_detailed_preprocessing_record); 1317 Opts.DisablePCHValidation = Args.hasArg(OPT_fno_validate_pch); 1318 1319 Opts.DumpDeserializedPCHDecls = Args.hasArg(OPT_dump_deserialized_pch_decls); 1320 for (arg_iterator it = Args.filtered_begin(OPT_error_on_deserialized_pch_decl), 1321 ie = Args.filtered_end(); it != ie; ++it) { 1322 const Arg *A = *it; 1323 Opts.DeserializedPCHDeclsToErrorOn.insert(A->getValue()); 1324 } 1325 1326 if (const Arg *A = Args.getLastArg(OPT_preamble_bytes_EQ)) { 1327 StringRef Value(A->getValue()); 1328 size_t Comma = Value.find(','); 1329 unsigned Bytes = 0; 1330 unsigned EndOfLine = 0; 1331 1332 if (Comma == StringRef::npos || 1333 Value.substr(0, Comma).getAsInteger(10, Bytes) || 1334 Value.substr(Comma + 1).getAsInteger(10, EndOfLine)) 1335 Diags.Report(diag::err_drv_preamble_format); 1336 else { 1337 Opts.PrecompiledPreambleBytes.first = Bytes; 1338 Opts.PrecompiledPreambleBytes.second = (EndOfLine != 0); 1339 } 1340 } 1341 1342 // Add macros from the command line. 1343 for (arg_iterator it = Args.filtered_begin(OPT_D, OPT_U), 1344 ie = Args.filtered_end(); it != ie; ++it) { 1345 if ((*it)->getOption().matches(OPT_D)) 1346 Opts.addMacroDef((*it)->getValue()); 1347 else 1348 Opts.addMacroUndef((*it)->getValue()); 1349 } 1350 1351 Opts.MacroIncludes = Args.getAllArgValues(OPT_imacros); 1352 1353 // Add the ordered list of -includes. 1354 for (arg_iterator it = Args.filtered_begin(OPT_include), 1355 ie = Args.filtered_end(); it != ie; ++it) { 1356 const Arg *A = *it; 1357 Opts.Includes.push_back(A->getValue()); 1358 } 1359 1360 for (arg_iterator it = Args.filtered_begin(OPT_chain_include), 1361 ie = Args.filtered_end(); it != ie; ++it) { 1362 const Arg *A = *it; 1363 Opts.ChainedIncludes.push_back(A->getValue()); 1364 } 1365 1366 // Include 'altivec.h' if -faltivec option present 1367 if (Args.hasArg(OPT_faltivec)) 1368 Opts.Includes.push_back("altivec.h"); 1369 1370 for (arg_iterator it = Args.filtered_begin(OPT_remap_file), 1371 ie = Args.filtered_end(); it != ie; ++it) { 1372 const Arg *A = *it; 1373 std::pair<StringRef,StringRef> Split = 1374 StringRef(A->getValue()).split(';'); 1375 1376 if (Split.second.empty()) { 1377 Diags.Report(diag::err_drv_invalid_remap_file) << A->getAsString(Args); 1378 continue; 1379 } 1380 1381 Opts.addRemappedFile(Split.first, Split.second); 1382 } 1383 1384 if (Arg *A = Args.getLastArg(OPT_fobjc_arc_cxxlib_EQ)) { 1385 StringRef Name = A->getValue(); 1386 unsigned Library = llvm::StringSwitch<unsigned>(Name) 1387 .Case("libc++", ARCXX_libcxx) 1388 .Case("libstdc++", ARCXX_libstdcxx) 1389 .Case("none", ARCXX_nolib) 1390 .Default(~0U); 1391 if (Library == ~0U) 1392 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Name; 1393 else 1394 Opts.ObjCXXARCStandardLibrary = (ObjCXXARCStandardLibraryKind)Library; 1395 } 1396 } 1397 1398 static void ParsePreprocessorOutputArgs(PreprocessorOutputOptions &Opts, 1399 ArgList &Args, 1400 frontend::ActionKind Action) { 1401 using namespace options; 1402 1403 switch (Action) { 1404 case frontend::ASTDeclList: 1405 case frontend::ASTDump: 1406 case frontend::ASTDumpXML: 1407 case frontend::ASTPrint: 1408 case frontend::ASTView: 1409 case frontend::EmitAssembly: 1410 case frontend::EmitBC: 1411 case frontend::EmitHTML: 1412 case frontend::EmitLLVM: 1413 case frontend::EmitLLVMOnly: 1414 case frontend::EmitCodeGenOnly: 1415 case frontend::EmitObj: 1416 case frontend::FixIt: 1417 case frontend::GenerateModule: 1418 case frontend::GeneratePCH: 1419 case frontend::GeneratePTH: 1420 case frontend::ParseSyntaxOnly: 1421 case frontend::PluginAction: 1422 case frontend::PrintDeclContext: 1423 case frontend::RewriteObjC: 1424 case frontend::RewriteTest: 1425 case frontend::RunAnalysis: 1426 case frontend::MigrateSource: 1427 Opts.ShowCPP = 0; 1428 break; 1429 1430 case frontend::DumpRawTokens: 1431 case frontend::DumpTokens: 1432 case frontend::InitOnly: 1433 case frontend::PrintPreamble: 1434 case frontend::PrintPreprocessedInput: 1435 case frontend::RewriteMacros: 1436 case frontend::RunPreprocessorOnly: 1437 Opts.ShowCPP = !Args.hasArg(OPT_dM); 1438 break; 1439 } 1440 1441 Opts.ShowComments = Args.hasArg(OPT_C); 1442 Opts.ShowLineMarkers = !Args.hasArg(OPT_P); 1443 Opts.ShowMacroComments = Args.hasArg(OPT_CC); 1444 Opts.ShowMacros = Args.hasArg(OPT_dM) || Args.hasArg(OPT_dD); 1445 Opts.RewriteIncludes = Args.hasArg(OPT_frewrite_includes); 1446 } 1447 1448 static void ParseTargetArgs(TargetOptions &Opts, ArgList &Args) { 1449 using namespace options; 1450 Opts.ABI = Args.getLastArgValue(OPT_target_abi); 1451 Opts.CXXABI = Args.getLastArgValue(OPT_cxx_abi); 1452 Opts.CPU = Args.getLastArgValue(OPT_target_cpu); 1453 Opts.FeaturesAsWritten = Args.getAllArgValues(OPT_target_feature); 1454 Opts.LinkerVersion = Args.getLastArgValue(OPT_target_linker_version); 1455 Opts.Triple = llvm::Triple::normalize(Args.getLastArgValue(OPT_triple)); 1456 1457 // Use the default target triple if unspecified. 1458 if (Opts.Triple.empty()) 1459 Opts.Triple = llvm::sys::getDefaultTargetTriple(); 1460 } 1461 1462 // 1463 1464 bool CompilerInvocation::CreateFromArgs(CompilerInvocation &Res, 1465 const char *const *ArgBegin, 1466 const char *const *ArgEnd, 1467 DiagnosticsEngine &Diags) { 1468 bool Success = true; 1469 1470 // Parse the arguments. 1471 OwningPtr<OptTable> Opts(createDriverOptTable()); 1472 unsigned MissingArgIndex, MissingArgCount; 1473 OwningPtr<InputArgList> Args( 1474 Opts->ParseArgs(ArgBegin, ArgEnd,MissingArgIndex, MissingArgCount)); 1475 1476 // Check for missing argument error. 1477 if (MissingArgCount) { 1478 Diags.Report(diag::err_drv_missing_argument) 1479 << Args->getArgString(MissingArgIndex) << MissingArgCount; 1480 Success = false; 1481 } 1482 1483 // Issue errors on unknown arguments. 1484 for (arg_iterator it = Args->filtered_begin(OPT_UNKNOWN), 1485 ie = Args->filtered_end(); it != ie; ++it) { 1486 Diags.Report(diag::err_drv_unknown_argument) << (*it)->getAsString(*Args); 1487 Success = false; 1488 } 1489 1490 // Issue errors on arguments that are not valid for CC1. 1491 for (ArgList::iterator I = Args->begin(), E = Args->end(); 1492 I != E; ++I) { 1493 if (!(*I)->getOption().hasFlag(options::CC1Option)) { 1494 Diags.Report(diag::err_drv_unknown_argument) << (*I)->getAsString(*Args); 1495 Success = false; 1496 } 1497 } 1498 1499 Success = ParseAnalyzerArgs(*Res.getAnalyzerOpts(), *Args, Diags) && Success; 1500 Success = ParseMigratorArgs(Res.getMigratorOpts(), *Args) && Success; 1501 ParseDependencyOutputArgs(Res.getDependencyOutputOpts(), *Args); 1502 Success = ParseDiagnosticArgs(Res.getDiagnosticOpts(), *Args, &Diags) 1503 && Success; 1504 ParseFileSystemArgs(Res.getFileSystemOpts(), *Args); 1505 // FIXME: We shouldn't have to pass the DashX option around here 1506 InputKind DashX = ParseFrontendArgs(Res.getFrontendOpts(), *Args, Diags); 1507 Success = ParseCodeGenArgs(Res.getCodeGenOpts(), *Args, DashX, Diags) 1508 && Success; 1509 ParseHeaderSearchArgs(Res.getHeaderSearchOpts(), *Args); 1510 if (DashX != IK_AST && DashX != IK_LLVM_IR) { 1511 ParseLangArgs(*Res.getLangOpts(), *Args, DashX, Diags); 1512 if (Res.getFrontendOpts().ProgramAction == frontend::RewriteObjC) 1513 Res.getLangOpts()->ObjCExceptions = 1; 1514 } 1515 // FIXME: ParsePreprocessorArgs uses the FileManager to read the contents of 1516 // PCH file and find the original header name. Remove the need to do that in 1517 // ParsePreprocessorArgs and remove the FileManager 1518 // parameters from the function and the "FileManager.h" #include. 1519 FileManager FileMgr(Res.getFileSystemOpts()); 1520 ParsePreprocessorArgs(Res.getPreprocessorOpts(), *Args, FileMgr, Diags); 1521 ParsePreprocessorOutputArgs(Res.getPreprocessorOutputOpts(), *Args, 1522 Res.getFrontendOpts().ProgramAction); 1523 ParseTargetArgs(Res.getTargetOpts(), *Args); 1524 1525 return Success; 1526 } 1527 1528 namespace { 1529 1530 class ModuleSignature { 1531 SmallVector<uint64_t, 16> Data; 1532 unsigned CurBit; 1533 uint64_t CurValue; 1534 1535 public: 1536 ModuleSignature() : CurBit(0), CurValue(0) { } 1537 1538 void add(uint64_t Value, unsigned Bits); 1539 void add(StringRef Value); 1540 void flush(); 1541 1542 llvm::APInt getAsInteger() const; 1543 }; 1544 } 1545 1546 void ModuleSignature::add(uint64_t Value, unsigned int NumBits) { 1547 CurValue |= Value << CurBit; 1548 if (CurBit + NumBits < 64) { 1549 CurBit += NumBits; 1550 return; 1551 } 1552 1553 // Add the current word. 1554 Data.push_back(CurValue); 1555 1556 if (CurBit) 1557 CurValue = Value >> (64-CurBit); 1558 else 1559 CurValue = 0; 1560 CurBit = (CurBit+NumBits) & 63; 1561 } 1562 1563 void ModuleSignature::flush() { 1564 if (CurBit == 0) 1565 return; 1566 1567 Data.push_back(CurValue); 1568 CurBit = 0; 1569 CurValue = 0; 1570 } 1571 1572 void ModuleSignature::add(StringRef Value) { 1573 for (StringRef::iterator I = Value.begin(), IEnd = Value.end(); I != IEnd;++I) 1574 add(*I, 8); 1575 } 1576 1577 llvm::APInt ModuleSignature::getAsInteger() const { 1578 return llvm::APInt(Data.size() * 64, Data); 1579 } 1580 1581 std::string CompilerInvocation::getModuleHash() const { 1582 using llvm::hash_code; 1583 using llvm::hash_value; 1584 using llvm::hash_combine; 1585 1586 // Start the signature with the compiler version. 1587 // FIXME: We'd rather use something more cryptographically sound than 1588 // CityHash, but this will do for now. 1589 hash_code code = hash_value(getClangFullRepositoryVersion()); 1590 1591 // Extend the signature with the language options 1592 #define LANGOPT(Name, Bits, Default, Description) \ 1593 code = hash_combine(code, LangOpts->Name); 1594 #define ENUM_LANGOPT(Name, Type, Bits, Default, Description) \ 1595 code = hash_combine(code, static_cast<unsigned>(LangOpts->get##Name())); 1596 #define BENIGN_LANGOPT(Name, Bits, Default, Description) 1597 #define BENIGN_ENUM_LANGOPT(Name, Type, Bits, Default, Description) 1598 #include "clang/Basic/LangOptions.def" 1599 1600 // Extend the signature with the target options. 1601 code = hash_combine(code, TargetOpts->Triple, TargetOpts->CPU, 1602 TargetOpts->ABI, TargetOpts->CXXABI, 1603 TargetOpts->LinkerVersion); 1604 for (unsigned i = 0, n = TargetOpts->FeaturesAsWritten.size(); i != n; ++i) 1605 code = hash_combine(code, TargetOpts->FeaturesAsWritten[i]); 1606 1607 // Extend the signature with preprocessor options. 1608 const PreprocessorOptions &ppOpts = getPreprocessorOpts(); 1609 const HeaderSearchOptions &hsOpts = getHeaderSearchOpts(); 1610 code = hash_combine(code, ppOpts.UsePredefines, ppOpts.DetailedRecord); 1611 1612 std::vector<StringRef> MacroDefs; 1613 for (std::vector<std::pair<std::string, bool/*isUndef*/> >::const_iterator 1614 I = getPreprocessorOpts().Macros.begin(), 1615 IEnd = getPreprocessorOpts().Macros.end(); 1616 I != IEnd; ++I) { 1617 // If we're supposed to ignore this macro for the purposes of modules, 1618 // don't put it into the hash. 1619 if (!hsOpts.ModulesIgnoreMacros.empty()) { 1620 // Check whether we're ignoring this macro. 1621 StringRef MacroDef = I->first; 1622 if (hsOpts.ModulesIgnoreMacros.count(MacroDef.split('=').first)) 1623 continue; 1624 } 1625 1626 code = hash_combine(code, I->first, I->second); 1627 } 1628 1629 // Extend the signature with the sysroot. 1630 code = hash_combine(code, hsOpts.Sysroot, hsOpts.UseBuiltinIncludes, 1631 hsOpts.UseStandardSystemIncludes, 1632 hsOpts.UseStandardCXXIncludes, 1633 hsOpts.UseLibcxx); 1634 1635 return llvm::APInt(64, code).toString(36, /*Signed=*/false); 1636 } 1637