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 void ParseCommentArgs(CommentOptions &Opts, ArgList &Args) { 283 Opts.BlockCommandNames = Args.getAllArgValues(OPT_fcomment_block_commands); 284 } 285 286 static bool ParseCodeGenArgs(CodeGenOptions &Opts, ArgList &Args, InputKind IK, 287 DiagnosticsEngine &Diags) { 288 using namespace options; 289 bool Success = true; 290 291 unsigned OptLevel = getOptimizationLevel(Args, IK, Diags); 292 if (OptLevel > 3) { 293 Diags.Report(diag::err_drv_invalid_value) 294 << Args.getLastArg(OPT_O)->getAsString(Args) << OptLevel; 295 OptLevel = 3; 296 Success = false; 297 } 298 Opts.OptimizationLevel = OptLevel; 299 300 // We must always run at least the always inlining pass. 301 Opts.setInlining( 302 (Opts.OptimizationLevel > 1) ? CodeGenOptions::NormalInlining 303 : CodeGenOptions::OnlyAlwaysInlining); 304 // -fno-inline-functions overrides OptimizationLevel > 1. 305 Opts.NoInline = Args.hasArg(OPT_fno_inline); 306 Opts.setInlining(Args.hasArg(OPT_fno_inline_functions) ? 307 CodeGenOptions::OnlyAlwaysInlining : Opts.getInlining()); 308 309 if (Args.hasArg(OPT_gline_tables_only)) { 310 Opts.setDebugInfo(CodeGenOptions::DebugLineTablesOnly); 311 } else if (Args.hasArg(OPT_g_Flag)) { 312 if (Args.hasFlag(OPT_flimit_debug_info, OPT_fno_limit_debug_info, true)) 313 Opts.setDebugInfo(CodeGenOptions::LimitedDebugInfo); 314 else 315 Opts.setDebugInfo(CodeGenOptions::FullDebugInfo); 316 } 317 Opts.DebugColumnInfo = Args.hasArg(OPT_dwarf_column_info); 318 319 Opts.ModulesAutolink = Args.hasArg(OPT_fmodules_autolink); 320 Opts.DisableLLVMOpts = Args.hasArg(OPT_disable_llvm_optzns); 321 Opts.DisableRedZone = Args.hasArg(OPT_disable_red_zone); 322 Opts.ForbidGuardVariables = Args.hasArg(OPT_fforbid_guard_variables); 323 Opts.UseRegisterSizedBitfieldAccess = Args.hasArg( 324 OPT_fuse_register_sized_bitfield_access); 325 Opts.RelaxedAliasing = Args.hasArg(OPT_relaxed_aliasing); 326 Opts.DwarfDebugFlags = Args.getLastArgValue(OPT_dwarf_debug_flags); 327 Opts.MergeAllConstants = !Args.hasArg(OPT_fno_merge_all_constants); 328 Opts.NoCommon = Args.hasArg(OPT_fno_common); 329 Opts.NoImplicitFloat = Args.hasArg(OPT_no_implicit_float); 330 Opts.OptimizeSize = getOptimizationLevelSize(Args, IK, Diags); 331 Opts.SimplifyLibCalls = !(Args.hasArg(OPT_fno_builtin) || 332 Args.hasArg(OPT_ffreestanding)); 333 Opts.UnrollLoops = Args.hasArg(OPT_funroll_loops) || 334 (Opts.OptimizationLevel > 1 && !Opts.OptimizeSize); 335 336 Opts.AsmVerbose = Args.hasArg(OPT_masm_verbose); 337 Opts.ObjCAutoRefCountExceptions = Args.hasArg(OPT_fobjc_arc_exceptions); 338 Opts.CUDAIsDevice = Args.hasArg(OPT_fcuda_is_device); 339 Opts.CXAAtExit = !Args.hasArg(OPT_fno_use_cxa_atexit); 340 Opts.CXXCtorDtorAliases = Args.hasArg(OPT_mconstructor_aliases); 341 Opts.CodeModel = Args.getLastArgValue(OPT_mcode_model); 342 Opts.DebugPass = Args.getLastArgValue(OPT_mdebug_pass); 343 Opts.DisableFPElim = Args.hasArg(OPT_mdisable_fp_elim); 344 Opts.DisableTailCalls = Args.hasArg(OPT_mdisable_tail_calls); 345 Opts.FloatABI = Args.getLastArgValue(OPT_mfloat_abi); 346 Opts.HiddenWeakVTables = Args.hasArg(OPT_fhidden_weak_vtables); 347 Opts.LessPreciseFPMAD = Args.hasArg(OPT_cl_mad_enable); 348 Opts.LimitFloatPrecision = Args.getLastArgValue(OPT_mlimit_float_precision); 349 Opts.NoInfsFPMath = (Args.hasArg(OPT_menable_no_infinities) || 350 Args.hasArg(OPT_cl_finite_math_only)|| 351 Args.hasArg(OPT_cl_fast_relaxed_math)); 352 Opts.NoNaNsFPMath = (Args.hasArg(OPT_menable_no_nans) || 353 Args.hasArg(OPT_cl_finite_math_only)|| 354 Args.hasArg(OPT_cl_fast_relaxed_math)); 355 Opts.NoZeroInitializedInBSS = Args.hasArg(OPT_mno_zero_initialized_in_bss); 356 Opts.BackendOptions = Args.getAllArgValues(OPT_backend_option); 357 Opts.NumRegisterParameters = Args.getLastArgIntValue(OPT_mregparm, 0, Diags); 358 Opts.NoGlobalMerge = Args.hasArg(OPT_mno_global_merge); 359 Opts.NoExecStack = Args.hasArg(OPT_mno_exec_stack); 360 Opts.RelaxAll = Args.hasArg(OPT_mrelax_all); 361 Opts.OmitLeafFramePointer = Args.hasArg(OPT_momit_leaf_frame_pointer); 362 Opts.SaveTempLabels = Args.hasArg(OPT_msave_temp_labels); 363 Opts.NoDwarf2CFIAsm = Args.hasArg(OPT_fno_dwarf2_cfi_asm); 364 Opts.NoDwarfDirectoryAsm = Args.hasArg(OPT_fno_dwarf_directory_asm); 365 Opts.SoftFloat = Args.hasArg(OPT_msoft_float); 366 Opts.StrictEnums = Args.hasArg(OPT_fstrict_enums); 367 Opts.UnsafeFPMath = Args.hasArg(OPT_menable_unsafe_fp_math) || 368 Args.hasArg(OPT_cl_unsafe_math_optimizations) || 369 Args.hasArg(OPT_cl_fast_relaxed_math); 370 Opts.UnwindTables = Args.hasArg(OPT_munwind_tables); 371 Opts.RelocationModel = Args.getLastArgValue(OPT_mrelocation_model, "pic"); 372 Opts.TrapFuncName = Args.getLastArgValue(OPT_ftrap_function_EQ); 373 Opts.UseInitArray = Args.hasArg(OPT_fuse_init_array); 374 375 Opts.FunctionSections = Args.hasArg(OPT_ffunction_sections); 376 Opts.DataSections = Args.hasArg(OPT_fdata_sections); 377 378 Opts.MainFileName = Args.getLastArgValue(OPT_main_file_name); 379 Opts.VerifyModule = !Args.hasArg(OPT_disable_llvm_verifier); 380 Opts.SanitizeRecover = !Args.hasArg(OPT_fno_sanitize_recover); 381 382 Opts.InstrumentFunctions = Args.hasArg(OPT_finstrument_functions); 383 Opts.InstrumentForProfiling = Args.hasArg(OPT_pg); 384 Opts.EmitGcovArcs = Args.hasArg(OPT_femit_coverage_data); 385 Opts.EmitGcovNotes = Args.hasArg(OPT_femit_coverage_notes); 386 Opts.EmitOpenCLArgMetadata = Args.hasArg(OPT_cl_kernel_arg_info); 387 Opts.CoverageFile = Args.getLastArgValue(OPT_coverage_file); 388 Opts.DebugCompilationDir = Args.getLastArgValue(OPT_fdebug_compilation_dir); 389 Opts.LinkBitcodeFile = Args.getLastArgValue(OPT_mlink_bitcode_file); 390 Opts.SanitizerBlacklistFile = Args.getLastArgValue(OPT_fsanitize_blacklist); 391 Opts.SanitizeMemoryTrackOrigins = 392 Args.hasArg(OPT_fsanitize_memory_track_origins); 393 Opts.SanitizeAddressZeroBaseShadow = 394 Args.hasArg(OPT_fsanitize_address_zero_base_shadow); 395 Opts.SanitizeUndefinedTrapOnError = 396 Args.hasArg(OPT_fsanitize_undefined_trap_on_error); 397 Opts.SSPBufferSize = 398 Args.getLastArgIntValue(OPT_stack_protector_buffer_size, 8, Diags); 399 Opts.StackRealignment = Args.hasArg(OPT_mstackrealign); 400 if (Arg *A = Args.getLastArg(OPT_mstack_alignment)) { 401 StringRef Val = A->getValue(); 402 unsigned StackAlignment = Opts.StackAlignment; 403 Val.getAsInteger(10, StackAlignment); 404 Opts.StackAlignment = StackAlignment; 405 } 406 407 if (Arg *A = Args.getLastArg(OPT_fobjc_dispatch_method_EQ)) { 408 StringRef Name = A->getValue(); 409 unsigned Method = llvm::StringSwitch<unsigned>(Name) 410 .Case("legacy", CodeGenOptions::Legacy) 411 .Case("non-legacy", CodeGenOptions::NonLegacy) 412 .Case("mixed", CodeGenOptions::Mixed) 413 .Default(~0U); 414 if (Method == ~0U) { 415 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Name; 416 Success = false; 417 } else { 418 Opts.setObjCDispatchMethod( 419 static_cast<CodeGenOptions::ObjCDispatchMethodKind>(Method)); 420 } 421 } 422 423 if (Arg *A = Args.getLastArg(OPT_ftlsmodel_EQ)) { 424 StringRef Name = A->getValue(); 425 unsigned Model = llvm::StringSwitch<unsigned>(Name) 426 .Case("global-dynamic", CodeGenOptions::GeneralDynamicTLSModel) 427 .Case("local-dynamic", CodeGenOptions::LocalDynamicTLSModel) 428 .Case("initial-exec", CodeGenOptions::InitialExecTLSModel) 429 .Case("local-exec", CodeGenOptions::LocalExecTLSModel) 430 .Default(~0U); 431 if (Model == ~0U) { 432 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Name; 433 Success = false; 434 } else { 435 Opts.setDefaultTLSModel(static_cast<CodeGenOptions::TLSModel>(Model)); 436 } 437 } 438 439 if (Arg *A = Args.getLastArg(OPT_ffp_contract)) { 440 StringRef Val = A->getValue(); 441 if (Val == "fast") 442 Opts.setFPContractMode(CodeGenOptions::FPC_Fast); 443 else if (Val == "on") 444 Opts.setFPContractMode(CodeGenOptions::FPC_On); 445 else if (Val == "off") 446 Opts.setFPContractMode(CodeGenOptions::FPC_Off); 447 else 448 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Val; 449 } 450 451 return Success; 452 } 453 454 static void ParseDependencyOutputArgs(DependencyOutputOptions &Opts, 455 ArgList &Args) { 456 using namespace options; 457 Opts.OutputFile = Args.getLastArgValue(OPT_dependency_file); 458 Opts.Targets = Args.getAllArgValues(OPT_MT); 459 Opts.IncludeSystemHeaders = Args.hasArg(OPT_sys_header_deps); 460 Opts.UsePhonyTargets = Args.hasArg(OPT_MP); 461 Opts.ShowHeaderIncludes = Args.hasArg(OPT_H); 462 Opts.HeaderIncludeOutputFile = Args.getLastArgValue(OPT_header_include_file); 463 Opts.AddMissingHeaderDeps = Args.hasArg(OPT_MG); 464 Opts.DOTOutputFile = Args.getLastArgValue(OPT_dependency_dot); 465 } 466 467 bool clang::ParseDiagnosticArgs(DiagnosticOptions &Opts, ArgList &Args, 468 DiagnosticsEngine *Diags) { 469 using namespace options; 470 bool Success = true; 471 472 Opts.DiagnosticLogFile = Args.getLastArgValue(OPT_diagnostic_log_file); 473 Opts.DiagnosticSerializationFile = 474 Args.getLastArgValue(OPT_diagnostic_serialized_file); 475 Opts.IgnoreWarnings = Args.hasArg(OPT_w); 476 Opts.NoRewriteMacros = Args.hasArg(OPT_Wno_rewrite_macros); 477 Opts.Pedantic = Args.hasArg(OPT_pedantic); 478 Opts.PedanticErrors = Args.hasArg(OPT_pedantic_errors); 479 Opts.ShowCarets = !Args.hasArg(OPT_fno_caret_diagnostics); 480 Opts.ShowColors = Args.hasArg(OPT_fcolor_diagnostics); 481 Opts.ShowColumn = Args.hasFlag(OPT_fshow_column, 482 OPT_fno_show_column, 483 /*Default=*/true); 484 Opts.ShowFixits = !Args.hasArg(OPT_fno_diagnostics_fixit_info); 485 Opts.ShowLocation = !Args.hasArg(OPT_fno_show_source_location); 486 Opts.ShowOptionNames = Args.hasArg(OPT_fdiagnostics_show_option); 487 488 // Default behavior is to not to show note include stacks. 489 Opts.ShowNoteIncludeStack = false; 490 if (Arg *A = Args.getLastArg(OPT_fdiagnostics_show_note_include_stack, 491 OPT_fno_diagnostics_show_note_include_stack)) 492 if (A->getOption().matches(OPT_fdiagnostics_show_note_include_stack)) 493 Opts.ShowNoteIncludeStack = true; 494 495 StringRef ShowOverloads = 496 Args.getLastArgValue(OPT_fshow_overloads_EQ, "all"); 497 if (ShowOverloads == "best") 498 Opts.setShowOverloads(Ovl_Best); 499 else if (ShowOverloads == "all") 500 Opts.setShowOverloads(Ovl_All); 501 else { 502 Success = false; 503 if (Diags) 504 Diags->Report(diag::err_drv_invalid_value) 505 << Args.getLastArg(OPT_fshow_overloads_EQ)->getAsString(Args) 506 << ShowOverloads; 507 } 508 509 StringRef ShowCategory = 510 Args.getLastArgValue(OPT_fdiagnostics_show_category, "none"); 511 if (ShowCategory == "none") 512 Opts.ShowCategories = 0; 513 else if (ShowCategory == "id") 514 Opts.ShowCategories = 1; 515 else if (ShowCategory == "name") 516 Opts.ShowCategories = 2; 517 else { 518 Success = false; 519 if (Diags) 520 Diags->Report(diag::err_drv_invalid_value) 521 << Args.getLastArg(OPT_fdiagnostics_show_category)->getAsString(Args) 522 << ShowCategory; 523 } 524 525 StringRef Format = 526 Args.getLastArgValue(OPT_fdiagnostics_format, "clang"); 527 if (Format == "clang") 528 Opts.setFormat(DiagnosticOptions::Clang); 529 else if (Format == "msvc") 530 Opts.setFormat(DiagnosticOptions::Msvc); 531 else if (Format == "vi") 532 Opts.setFormat(DiagnosticOptions::Vi); 533 else { 534 Success = false; 535 if (Diags) 536 Diags->Report(diag::err_drv_invalid_value) 537 << Args.getLastArg(OPT_fdiagnostics_format)->getAsString(Args) 538 << Format; 539 } 540 541 Opts.ShowSourceRanges = Args.hasArg(OPT_fdiagnostics_print_source_range_info); 542 Opts.ShowParseableFixits = Args.hasArg(OPT_fdiagnostics_parseable_fixits); 543 Opts.ShowPresumedLoc = !Args.hasArg(OPT_fno_diagnostics_use_presumed_location); 544 Opts.VerifyDiagnostics = Args.hasArg(OPT_verify); 545 Opts.ElideType = !Args.hasArg(OPT_fno_elide_type); 546 Opts.ShowTemplateTree = Args.hasArg(OPT_fdiagnostics_show_template_tree); 547 Opts.ErrorLimit = Args.getLastArgIntValue(OPT_ferror_limit, 0, Diags); 548 Opts.MacroBacktraceLimit 549 = Args.getLastArgIntValue(OPT_fmacro_backtrace_limit, 550 DiagnosticOptions::DefaultMacroBacktraceLimit, Diags); 551 Opts.TemplateBacktraceLimit 552 = Args.getLastArgIntValue(OPT_ftemplate_backtrace_limit, 553 DiagnosticOptions::DefaultTemplateBacktraceLimit, 554 Diags); 555 Opts.ConstexprBacktraceLimit 556 = Args.getLastArgIntValue(OPT_fconstexpr_backtrace_limit, 557 DiagnosticOptions::DefaultConstexprBacktraceLimit, 558 Diags); 559 Opts.TabStop = Args.getLastArgIntValue(OPT_ftabstop, 560 DiagnosticOptions::DefaultTabStop, Diags); 561 if (Opts.TabStop == 0 || Opts.TabStop > DiagnosticOptions::MaxTabStop) { 562 Opts.TabStop = DiagnosticOptions::DefaultTabStop; 563 if (Diags) 564 Diags->Report(diag::warn_ignoring_ftabstop_value) 565 << Opts.TabStop << DiagnosticOptions::DefaultTabStop; 566 } 567 Opts.MessageLength = Args.getLastArgIntValue(OPT_fmessage_length, 0, Diags); 568 addWarningArgs(Args, Opts.Warnings); 569 570 return Success; 571 } 572 573 static void ParseFileSystemArgs(FileSystemOptions &Opts, ArgList &Args) { 574 Opts.WorkingDir = Args.getLastArgValue(OPT_working_directory); 575 } 576 577 static InputKind ParseFrontendArgs(FrontendOptions &Opts, ArgList &Args, 578 DiagnosticsEngine &Diags) { 579 using namespace options; 580 Opts.ProgramAction = frontend::ParseSyntaxOnly; 581 if (const Arg *A = Args.getLastArg(OPT_Action_Group)) { 582 switch (A->getOption().getID()) { 583 default: 584 llvm_unreachable("Invalid option in group!"); 585 case OPT_ast_list: 586 Opts.ProgramAction = frontend::ASTDeclList; break; 587 case OPT_ast_dump: 588 Opts.ProgramAction = frontend::ASTDump; break; 589 case OPT_ast_dump_xml: 590 Opts.ProgramAction = frontend::ASTDumpXML; break; 591 case OPT_ast_print: 592 Opts.ProgramAction = frontend::ASTPrint; break; 593 case OPT_ast_view: 594 Opts.ProgramAction = frontend::ASTView; break; 595 case OPT_dump_raw_tokens: 596 Opts.ProgramAction = frontend::DumpRawTokens; break; 597 case OPT_dump_tokens: 598 Opts.ProgramAction = frontend::DumpTokens; break; 599 case OPT_S: 600 Opts.ProgramAction = frontend::EmitAssembly; break; 601 case OPT_emit_llvm_bc: 602 Opts.ProgramAction = frontend::EmitBC; break; 603 case OPT_emit_html: 604 Opts.ProgramAction = frontend::EmitHTML; break; 605 case OPT_emit_llvm: 606 Opts.ProgramAction = frontend::EmitLLVM; break; 607 case OPT_emit_llvm_only: 608 Opts.ProgramAction = frontend::EmitLLVMOnly; break; 609 case OPT_emit_codegen_only: 610 Opts.ProgramAction = frontend::EmitCodeGenOnly; break; 611 case OPT_emit_obj: 612 Opts.ProgramAction = frontend::EmitObj; break; 613 case OPT_fixit_EQ: 614 Opts.FixItSuffix = A->getValue(); 615 // fall-through! 616 case OPT_fixit: 617 Opts.ProgramAction = frontend::FixIt; break; 618 case OPT_emit_module: 619 Opts.ProgramAction = frontend::GenerateModule; break; 620 case OPT_emit_pch: 621 Opts.ProgramAction = frontend::GeneratePCH; break; 622 case OPT_emit_pth: 623 Opts.ProgramAction = frontend::GeneratePTH; break; 624 case OPT_init_only: 625 Opts.ProgramAction = frontend::InitOnly; break; 626 case OPT_fsyntax_only: 627 Opts.ProgramAction = frontend::ParseSyntaxOnly; break; 628 case OPT_print_decl_contexts: 629 Opts.ProgramAction = frontend::PrintDeclContext; break; 630 case OPT_print_preamble: 631 Opts.ProgramAction = frontend::PrintPreamble; break; 632 case OPT_E: 633 Opts.ProgramAction = frontend::PrintPreprocessedInput; break; 634 case OPT_rewrite_macros: 635 Opts.ProgramAction = frontend::RewriteMacros; break; 636 case OPT_rewrite_objc: 637 Opts.ProgramAction = frontend::RewriteObjC; break; 638 case OPT_rewrite_test: 639 Opts.ProgramAction = frontend::RewriteTest; break; 640 case OPT_analyze: 641 Opts.ProgramAction = frontend::RunAnalysis; break; 642 case OPT_migrate: 643 Opts.ProgramAction = frontend::MigrateSource; break; 644 case OPT_Eonly: 645 Opts.ProgramAction = frontend::RunPreprocessorOnly; break; 646 } 647 } 648 649 if (const Arg* A = Args.getLastArg(OPT_plugin)) { 650 Opts.Plugins.push_back(A->getValue(0)); 651 Opts.ProgramAction = frontend::PluginAction; 652 Opts.ActionName = A->getValue(); 653 654 for (arg_iterator it = Args.filtered_begin(OPT_plugin_arg), 655 end = Args.filtered_end(); it != end; ++it) { 656 if ((*it)->getValue(0) == Opts.ActionName) 657 Opts.PluginArgs.push_back((*it)->getValue(1)); 658 } 659 } 660 661 Opts.AddPluginActions = Args.getAllArgValues(OPT_add_plugin); 662 Opts.AddPluginArgs.resize(Opts.AddPluginActions.size()); 663 for (int i = 0, e = Opts.AddPluginActions.size(); i != e; ++i) { 664 for (arg_iterator it = Args.filtered_begin(OPT_plugin_arg), 665 end = Args.filtered_end(); it != end; ++it) { 666 if ((*it)->getValue(0) == Opts.AddPluginActions[i]) 667 Opts.AddPluginArgs[i].push_back((*it)->getValue(1)); 668 } 669 } 670 671 if (const Arg *A = Args.getLastArg(OPT_code_completion_at)) { 672 Opts.CodeCompletionAt = 673 ParsedSourceLocation::FromString(A->getValue()); 674 if (Opts.CodeCompletionAt.FileName.empty()) 675 Diags.Report(diag::err_drv_invalid_value) 676 << A->getAsString(Args) << A->getValue(); 677 } 678 Opts.DisableFree = Args.hasArg(OPT_disable_free); 679 680 Opts.OutputFile = Args.getLastArgValue(OPT_o); 681 Opts.Plugins = Args.getAllArgValues(OPT_load); 682 Opts.RelocatablePCH = Args.hasArg(OPT_relocatable_pch); 683 Opts.ShowHelp = Args.hasArg(OPT_help); 684 Opts.ShowStats = Args.hasArg(OPT_print_stats); 685 Opts.ShowTimers = Args.hasArg(OPT_ftime_report); 686 Opts.ShowVersion = Args.hasArg(OPT_version); 687 Opts.ASTMergeFiles = Args.getAllArgValues(OPT_ast_merge); 688 Opts.LLVMArgs = Args.getAllArgValues(OPT_mllvm); 689 Opts.FixWhatYouCan = Args.hasArg(OPT_fix_what_you_can); 690 Opts.FixOnlyWarnings = Args.hasArg(OPT_fix_only_warnings); 691 Opts.FixAndRecompile = Args.hasArg(OPT_fixit_recompile); 692 Opts.FixToTemporaries = Args.hasArg(OPT_fixit_to_temp); 693 Opts.ASTDumpFilter = Args.getLastArgValue(OPT_ast_dump_filter); 694 Opts.UseGlobalModuleIndex = !Args.hasArg(OPT_fno_modules_global_index); 695 Opts.GenerateGlobalModuleIndex = Opts.UseGlobalModuleIndex; 696 697 Opts.CodeCompleteOpts.IncludeMacros 698 = Args.hasArg(OPT_code_completion_macros); 699 Opts.CodeCompleteOpts.IncludeCodePatterns 700 = Args.hasArg(OPT_code_completion_patterns); 701 Opts.CodeCompleteOpts.IncludeGlobals 702 = !Args.hasArg(OPT_no_code_completion_globals); 703 Opts.CodeCompleteOpts.IncludeBriefComments 704 = Args.hasArg(OPT_code_completion_brief_comments); 705 706 Opts.OverrideRecordLayoutsFile 707 = Args.getLastArgValue(OPT_foverride_record_layout_EQ); 708 if (const Arg *A = Args.getLastArg(OPT_arcmt_check, 709 OPT_arcmt_modify, 710 OPT_arcmt_migrate)) { 711 switch (A->getOption().getID()) { 712 default: 713 llvm_unreachable("missed a case"); 714 case OPT_arcmt_check: 715 Opts.ARCMTAction = FrontendOptions::ARCMT_Check; 716 break; 717 case OPT_arcmt_modify: 718 Opts.ARCMTAction = FrontendOptions::ARCMT_Modify; 719 break; 720 case OPT_arcmt_migrate: 721 Opts.ARCMTAction = FrontendOptions::ARCMT_Migrate; 722 break; 723 } 724 } 725 Opts.MTMigrateDir = Args.getLastArgValue(OPT_mt_migrate_directory); 726 Opts.ARCMTMigrateReportOut 727 = Args.getLastArgValue(OPT_arcmt_migrate_report_output); 728 Opts.ARCMTMigrateEmitARCErrors 729 = Args.hasArg(OPT_arcmt_migrate_emit_arc_errors); 730 731 if (Args.hasArg(OPT_objcmt_migrate_literals)) 732 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_Literals; 733 if (Args.hasArg(OPT_objcmt_migrate_subscripting)) 734 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_Subscripting; 735 736 if (Opts.ARCMTAction != FrontendOptions::ARCMT_None && 737 Opts.ObjCMTAction != FrontendOptions::ObjCMT_None) { 738 Diags.Report(diag::err_drv_argument_not_allowed_with) 739 << "ARC migration" << "ObjC migration"; 740 } 741 742 InputKind DashX = IK_None; 743 if (const Arg *A = Args.getLastArg(OPT_x)) { 744 DashX = llvm::StringSwitch<InputKind>(A->getValue()) 745 .Case("c", IK_C) 746 .Case("cl", IK_OpenCL) 747 .Case("cuda", IK_CUDA) 748 .Case("c++", IK_CXX) 749 .Case("objective-c", IK_ObjC) 750 .Case("objective-c++", IK_ObjCXX) 751 .Case("cpp-output", IK_PreprocessedC) 752 .Case("assembler-with-cpp", IK_Asm) 753 .Case("c++-cpp-output", IK_PreprocessedCXX) 754 .Case("objective-c-cpp-output", IK_PreprocessedObjC) 755 .Case("objc-cpp-output", IK_PreprocessedObjC) 756 .Case("objective-c++-cpp-output", IK_PreprocessedObjCXX) 757 .Case("objc++-cpp-output", IK_PreprocessedObjCXX) 758 .Case("c-header", IK_C) 759 .Case("cl-header", IK_OpenCL) 760 .Case("objective-c-header", IK_ObjC) 761 .Case("c++-header", IK_CXX) 762 .Case("objective-c++-header", IK_ObjCXX) 763 .Case("ast", IK_AST) 764 .Case("ir", IK_LLVM_IR) 765 .Default(IK_None); 766 if (DashX == IK_None) 767 Diags.Report(diag::err_drv_invalid_value) 768 << A->getAsString(Args) << A->getValue(); 769 } 770 771 // '-' is the default input if none is given. 772 std::vector<std::string> Inputs = Args.getAllArgValues(OPT_INPUT); 773 Opts.Inputs.clear(); 774 if (Inputs.empty()) 775 Inputs.push_back("-"); 776 for (unsigned i = 0, e = Inputs.size(); i != e; ++i) { 777 InputKind IK = DashX; 778 if (IK == IK_None) { 779 IK = FrontendOptions::getInputKindForExtension( 780 StringRef(Inputs[i]).rsplit('.').second); 781 // FIXME: Remove this hack. 782 if (i == 0) 783 DashX = IK; 784 } 785 Opts.Inputs.push_back(FrontendInputFile(Inputs[i], IK)); 786 } 787 788 return DashX; 789 } 790 791 std::string CompilerInvocation::GetResourcesPath(const char *Argv0, 792 void *MainAddr) { 793 llvm::sys::Path P = llvm::sys::Path::GetMainExecutable(Argv0, MainAddr); 794 795 if (!P.isEmpty()) { 796 P.eraseComponent(); // Remove /clang from foo/bin/clang 797 P.eraseComponent(); // Remove /bin from foo/bin 798 799 // Get foo/lib/clang/<version>/include 800 P.appendComponent("lib"); 801 P.appendComponent("clang"); 802 P.appendComponent(CLANG_VERSION_STRING); 803 } 804 805 return P.str(); 806 } 807 808 static void ParseHeaderSearchArgs(HeaderSearchOptions &Opts, ArgList &Args) { 809 using namespace options; 810 Opts.Sysroot = Args.getLastArgValue(OPT_isysroot, "/"); 811 Opts.Verbose = Args.hasArg(OPT_v); 812 Opts.UseBuiltinIncludes = !Args.hasArg(OPT_nobuiltininc); 813 Opts.UseStandardSystemIncludes = !Args.hasArg(OPT_nostdsysteminc); 814 Opts.UseStandardCXXIncludes = !Args.hasArg(OPT_nostdincxx); 815 if (const Arg *A = Args.getLastArg(OPT_stdlib_EQ)) 816 Opts.UseLibcxx = (strcmp(A->getValue(), "libc++") == 0); 817 Opts.ResourceDir = Args.getLastArgValue(OPT_resource_dir); 818 Opts.ModuleCachePath = Args.getLastArgValue(OPT_fmodules_cache_path); 819 Opts.DisableModuleHash = Args.hasArg(OPT_fdisable_module_hash); 820 821 for (arg_iterator it = Args.filtered_begin(OPT_fmodules_ignore_macro), 822 ie = Args.filtered_end(); it != ie; ++it) { 823 StringRef MacroDef = (*it)->getValue(); 824 Opts.ModulesIgnoreMacros.insert(MacroDef.split('=').first); 825 } 826 827 // Add -I..., -F..., and -index-header-map options in order. 828 bool IsIndexHeaderMap = false; 829 for (arg_iterator it = Args.filtered_begin(OPT_I, OPT_F, 830 OPT_index_header_map), 831 ie = Args.filtered_end(); it != ie; ++it) { 832 if ((*it)->getOption().matches(OPT_index_header_map)) { 833 // -index-header-map applies to the next -I or -F. 834 IsIndexHeaderMap = true; 835 continue; 836 } 837 838 frontend::IncludeDirGroup Group 839 = IsIndexHeaderMap? frontend::IndexHeaderMap : frontend::Angled; 840 841 Opts.AddPath((*it)->getValue(), Group, 842 /*IsFramework=*/ (*it)->getOption().matches(OPT_F), true); 843 IsIndexHeaderMap = false; 844 } 845 846 // Add -iprefix/-iwithprefix/-iwithprefixbefore options. 847 StringRef Prefix = ""; // FIXME: This isn't the correct default prefix. 848 for (arg_iterator it = Args.filtered_begin(OPT_iprefix, OPT_iwithprefix, 849 OPT_iwithprefixbefore), 850 ie = Args.filtered_end(); it != ie; ++it) { 851 const Arg *A = *it; 852 if (A->getOption().matches(OPT_iprefix)) 853 Prefix = A->getValue(); 854 else if (A->getOption().matches(OPT_iwithprefix)) 855 Opts.AddPath(Prefix.str() + A->getValue(), 856 frontend::After, false, true); 857 else 858 Opts.AddPath(Prefix.str() + A->getValue(), 859 frontend::Angled, false, true); 860 } 861 862 for (arg_iterator it = Args.filtered_begin(OPT_idirafter), 863 ie = Args.filtered_end(); it != ie; ++it) 864 Opts.AddPath((*it)->getValue(), frontend::After, false, true); 865 for (arg_iterator it = Args.filtered_begin(OPT_iquote), 866 ie = Args.filtered_end(); it != ie; ++it) 867 Opts.AddPath((*it)->getValue(), frontend::Quoted, false, true); 868 for (arg_iterator it = Args.filtered_begin(OPT_isystem, 869 OPT_iwithsysroot), ie = Args.filtered_end(); it != ie; ++it) 870 Opts.AddPath((*it)->getValue(), frontend::System, false, 871 !(*it)->getOption().matches(OPT_iwithsysroot)); 872 for (arg_iterator it = Args.filtered_begin(OPT_iframework), 873 ie = Args.filtered_end(); it != ie; ++it) 874 Opts.AddPath((*it)->getValue(), frontend::System, true, true); 875 876 // Add the paths for the various language specific isystem flags. 877 for (arg_iterator it = Args.filtered_begin(OPT_c_isystem), 878 ie = Args.filtered_end(); it != ie; ++it) 879 Opts.AddPath((*it)->getValue(), frontend::CSystem, false, true); 880 for (arg_iterator it = Args.filtered_begin(OPT_cxx_isystem), 881 ie = Args.filtered_end(); it != ie; ++it) 882 Opts.AddPath((*it)->getValue(), frontend::CXXSystem, false, true); 883 for (arg_iterator it = Args.filtered_begin(OPT_objc_isystem), 884 ie = Args.filtered_end(); it != ie; ++it) 885 Opts.AddPath((*it)->getValue(), frontend::ObjCSystem, false,true); 886 for (arg_iterator it = Args.filtered_begin(OPT_objcxx_isystem), 887 ie = Args.filtered_end(); it != ie; ++it) 888 Opts.AddPath((*it)->getValue(), frontend::ObjCXXSystem, false, true); 889 890 // Add the internal paths from a driver that detects standard include paths. 891 for (arg_iterator I = Args.filtered_begin(OPT_internal_isystem, 892 OPT_internal_externc_isystem), 893 E = Args.filtered_end(); 894 I != E; ++I) { 895 frontend::IncludeDirGroup Group = frontend::System; 896 if ((*I)->getOption().matches(OPT_internal_externc_isystem)) 897 Group = frontend::ExternCSystem; 898 Opts.AddPath((*I)->getValue(), Group, false, true); 899 } 900 901 // Add the path prefixes which are implicitly treated as being system headers. 902 for (arg_iterator I = Args.filtered_begin(OPT_isystem_prefix, 903 OPT_ino_system_prefix), 904 E = Args.filtered_end(); 905 I != E; ++I) 906 Opts.AddSystemHeaderPrefix((*I)->getValue(), 907 (*I)->getOption().matches(OPT_isystem_prefix)); 908 } 909 910 void CompilerInvocation::setLangDefaults(LangOptions &Opts, InputKind IK, 911 LangStandard::Kind LangStd) { 912 // Set some properties which depend solely on the input kind; it would be nice 913 // to move these to the language standard, and have the driver resolve the 914 // input kind + language standard. 915 if (IK == IK_Asm) { 916 Opts.AsmPreprocessor = 1; 917 } else if (IK == IK_ObjC || 918 IK == IK_ObjCXX || 919 IK == IK_PreprocessedObjC || 920 IK == IK_PreprocessedObjCXX) { 921 Opts.ObjC1 = Opts.ObjC2 = 1; 922 } 923 924 if (LangStd == LangStandard::lang_unspecified) { 925 // Based on the base language, pick one. 926 switch (IK) { 927 case IK_None: 928 case IK_AST: 929 case IK_LLVM_IR: 930 llvm_unreachable("Invalid input kind!"); 931 case IK_OpenCL: 932 LangStd = LangStandard::lang_opencl; 933 break; 934 case IK_CUDA: 935 LangStd = LangStandard::lang_cuda; 936 break; 937 case IK_Asm: 938 case IK_C: 939 case IK_PreprocessedC: 940 case IK_ObjC: 941 case IK_PreprocessedObjC: 942 LangStd = LangStandard::lang_gnu99; 943 break; 944 case IK_CXX: 945 case IK_PreprocessedCXX: 946 case IK_ObjCXX: 947 case IK_PreprocessedObjCXX: 948 LangStd = LangStandard::lang_gnucxx98; 949 break; 950 } 951 } 952 953 const LangStandard &Std = LangStandard::getLangStandardForKind(LangStd); 954 Opts.LineComment = Std.hasLineComments(); 955 Opts.C99 = Std.isC99(); 956 Opts.C11 = Std.isC11(); 957 Opts.CPlusPlus = Std.isCPlusPlus(); 958 Opts.CPlusPlus11 = Std.isCPlusPlus11(); 959 Opts.CPlusPlus1y = Std.isCPlusPlus1y(); 960 Opts.Digraphs = Std.hasDigraphs(); 961 Opts.GNUMode = Std.isGNUMode(); 962 Opts.GNUInline = !Std.isC99(); 963 Opts.HexFloats = Std.hasHexFloats(); 964 Opts.ImplicitInt = Std.hasImplicitInt(); 965 966 // Set OpenCL Version. 967 if (LangStd == LangStandard::lang_opencl) { 968 Opts.OpenCL = 1; 969 Opts.OpenCLVersion = 100; 970 } 971 else if (LangStd == LangStandard::lang_opencl11) { 972 Opts.OpenCL = 1; 973 Opts.OpenCLVersion = 110; 974 } 975 else if (LangStd == LangStandard::lang_opencl12) { 976 Opts.OpenCL = 1; 977 Opts.OpenCLVersion = 120; 978 } 979 980 // OpenCL has some additional defaults. 981 if (Opts.OpenCL) { 982 Opts.AltiVec = 0; 983 Opts.CXXOperatorNames = 1; 984 Opts.LaxVectorConversions = 0; 985 Opts.DefaultFPContract = 1; 986 Opts.NativeHalfType = 1; 987 } 988 989 if (LangStd == LangStandard::lang_cuda) 990 Opts.CUDA = 1; 991 992 // OpenCL and C++ both have bool, true, false keywords. 993 Opts.Bool = Opts.OpenCL || Opts.CPlusPlus; 994 995 // C++ has wchar_t keyword. 996 Opts.WChar = Opts.CPlusPlus; 997 998 Opts.GNUKeywords = Opts.GNUMode; 999 Opts.CXXOperatorNames = Opts.CPlusPlus; 1000 1001 // Mimicing gcc's behavior, trigraphs are only enabled if -trigraphs 1002 // is specified, or -std is set to a conforming mode. 1003 Opts.Trigraphs = !Opts.GNUMode; 1004 1005 Opts.DollarIdents = !Opts.AsmPreprocessor; 1006 } 1007 1008 /// Attempt to parse a visibility value out of the given argument. 1009 static Visibility parseVisibility(Arg *arg, ArgList &args, 1010 DiagnosticsEngine &diags) { 1011 StringRef value = arg->getValue(); 1012 if (value == "default") { 1013 return DefaultVisibility; 1014 } else if (value == "hidden") { 1015 return HiddenVisibility; 1016 } else if (value == "protected") { 1017 // FIXME: diagnose if target does not support protected visibility 1018 return ProtectedVisibility; 1019 } 1020 1021 diags.Report(diag::err_drv_invalid_value) 1022 << arg->getAsString(args) << value; 1023 return DefaultVisibility; 1024 } 1025 1026 static void ParseLangArgs(LangOptions &Opts, ArgList &Args, InputKind IK, 1027 DiagnosticsEngine &Diags) { 1028 // FIXME: Cleanup per-file based stuff. 1029 LangStandard::Kind LangStd = LangStandard::lang_unspecified; 1030 if (const Arg *A = Args.getLastArg(OPT_std_EQ)) { 1031 LangStd = llvm::StringSwitch<LangStandard::Kind>(A->getValue()) 1032 #define LANGSTANDARD(id, name, desc, features) \ 1033 .Case(name, LangStandard::lang_##id) 1034 #include "clang/Frontend/LangStandards.def" 1035 .Default(LangStandard::lang_unspecified); 1036 if (LangStd == LangStandard::lang_unspecified) 1037 Diags.Report(diag::err_drv_invalid_value) 1038 << A->getAsString(Args) << A->getValue(); 1039 else { 1040 // Valid standard, check to make sure language and standard are compatable. 1041 const LangStandard &Std = LangStandard::getLangStandardForKind(LangStd); 1042 switch (IK) { 1043 case IK_C: 1044 case IK_ObjC: 1045 case IK_PreprocessedC: 1046 case IK_PreprocessedObjC: 1047 if (!(Std.isC89() || Std.isC99())) 1048 Diags.Report(diag::err_drv_argument_not_allowed_with) 1049 << A->getAsString(Args) << "C/ObjC"; 1050 break; 1051 case IK_CXX: 1052 case IK_ObjCXX: 1053 case IK_PreprocessedCXX: 1054 case IK_PreprocessedObjCXX: 1055 if (!Std.isCPlusPlus()) 1056 Diags.Report(diag::err_drv_argument_not_allowed_with) 1057 << A->getAsString(Args) << "C++/ObjC++"; 1058 break; 1059 case IK_OpenCL: 1060 if (!Std.isC99()) 1061 Diags.Report(diag::err_drv_argument_not_allowed_with) 1062 << A->getAsString(Args) << "OpenCL"; 1063 break; 1064 case IK_CUDA: 1065 if (!Std.isCPlusPlus()) 1066 Diags.Report(diag::err_drv_argument_not_allowed_with) 1067 << A->getAsString(Args) << "CUDA"; 1068 break; 1069 default: 1070 break; 1071 } 1072 } 1073 } 1074 1075 // -cl-std only applies for OpenCL language standards. 1076 // Override the -std option in this case. 1077 if (const Arg *A = Args.getLastArg(OPT_cl_std_EQ)) { 1078 LangStandard::Kind OpenCLLangStd 1079 = llvm::StringSwitch<LangStandard::Kind>(A->getValue()) 1080 .Case("CL", LangStandard::lang_opencl) 1081 .Case("CL1.1", LangStandard::lang_opencl11) 1082 .Case("CL1.2", LangStandard::lang_opencl12) 1083 .Default(LangStandard::lang_unspecified); 1084 1085 if (OpenCLLangStd == LangStandard::lang_unspecified) { 1086 Diags.Report(diag::err_drv_invalid_value) 1087 << A->getAsString(Args) << A->getValue(); 1088 } 1089 else 1090 LangStd = OpenCLLangStd; 1091 } 1092 1093 CompilerInvocation::setLangDefaults(Opts, IK, LangStd); 1094 1095 // We abuse '-f[no-]gnu-keywords' to force overriding all GNU-extension 1096 // keywords. This behavior is provided by GCC's poorly named '-fasm' flag, 1097 // while a subset (the non-C++ GNU keywords) is provided by GCC's 1098 // '-fgnu-keywords'. Clang conflates the two for simplicity under the single 1099 // name, as it doesn't seem a useful distinction. 1100 Opts.GNUKeywords = Args.hasFlag(OPT_fgnu_keywords, OPT_fno_gnu_keywords, 1101 Opts.GNUKeywords); 1102 1103 if (Args.hasArg(OPT_fno_operator_names)) 1104 Opts.CXXOperatorNames = 0; 1105 1106 if (Opts.ObjC1) { 1107 if (Arg *arg = Args.getLastArg(OPT_fobjc_runtime_EQ)) { 1108 StringRef value = arg->getValue(); 1109 if (Opts.ObjCRuntime.tryParse(value)) 1110 Diags.Report(diag::err_drv_unknown_objc_runtime) << value; 1111 } 1112 1113 if (Args.hasArg(OPT_fobjc_gc_only)) 1114 Opts.setGC(LangOptions::GCOnly); 1115 else if (Args.hasArg(OPT_fobjc_gc)) 1116 Opts.setGC(LangOptions::HybridGC); 1117 else if (Args.hasArg(OPT_fobjc_arc)) { 1118 Opts.ObjCAutoRefCount = 1; 1119 if (!Opts.ObjCRuntime.allowsARC()) 1120 Diags.Report(diag::err_arc_unsupported_on_runtime); 1121 1122 // Only set ObjCARCWeak if ARC is enabled. 1123 if (Args.hasArg(OPT_fobjc_runtime_has_weak)) 1124 Opts.ObjCARCWeak = 1; 1125 else 1126 Opts.ObjCARCWeak = Opts.ObjCRuntime.allowsWeak(); 1127 } 1128 1129 if (Args.hasArg(OPT_fno_objc_infer_related_result_type)) 1130 Opts.ObjCInferRelatedResultType = 0; 1131 } 1132 1133 if (Args.hasArg(OPT_fgnu89_inline)) 1134 Opts.GNUInline = 1; 1135 1136 if (Args.hasArg(OPT_fapple_kext)) { 1137 if (!Opts.CPlusPlus) 1138 Diags.Report(diag::warn_c_kext); 1139 else 1140 Opts.AppleKext = 1; 1141 } 1142 1143 if (Args.hasArg(OPT_print_ivar_layout)) 1144 Opts.ObjCGCBitmapPrint = 1; 1145 if (Args.hasArg(OPT_fno_constant_cfstrings)) 1146 Opts.NoConstantCFStrings = 1; 1147 1148 if (Args.hasArg(OPT_faltivec)) 1149 Opts.AltiVec = 1; 1150 1151 if (Args.hasArg(OPT_pthread)) 1152 Opts.POSIXThreads = 1; 1153 1154 if (Args.hasArg(OPT_fdelayed_template_parsing)) 1155 Opts.DelayedTemplateParsing = 1; 1156 1157 // The value-visibility mode defaults to "default". 1158 if (Arg *visOpt = Args.getLastArg(OPT_fvisibility)) { 1159 Opts.setValueVisibilityMode(parseVisibility(visOpt, Args, Diags)); 1160 } else { 1161 Opts.setValueVisibilityMode(DefaultVisibility); 1162 } 1163 1164 // The type-visibility mode defaults to the value-visibility mode. 1165 if (Arg *typeVisOpt = Args.getLastArg(OPT_ftype_visibility)) { 1166 Opts.setTypeVisibilityMode(parseVisibility(typeVisOpt, Args, Diags)); 1167 } else { 1168 Opts.setTypeVisibilityMode(Opts.getValueVisibilityMode()); 1169 } 1170 1171 if (Args.hasArg(OPT_fvisibility_inlines_hidden)) 1172 Opts.InlineVisibilityHidden = 1; 1173 1174 if (Args.hasArg(OPT_ftrapv)) { 1175 Opts.setSignedOverflowBehavior(LangOptions::SOB_Trapping); 1176 // Set the handler, if one is specified. 1177 Opts.OverflowHandler = 1178 Args.getLastArgValue(OPT_ftrapv_handler); 1179 } 1180 else if (Args.hasArg(OPT_fwrapv)) 1181 Opts.setSignedOverflowBehavior(LangOptions::SOB_Defined); 1182 1183 if (Args.hasArg(OPT_trigraphs)) 1184 Opts.Trigraphs = 1; 1185 1186 Opts.DollarIdents = Args.hasFlag(OPT_fdollars_in_identifiers, 1187 OPT_fno_dollars_in_identifiers, 1188 Opts.DollarIdents); 1189 Opts.PascalStrings = Args.hasArg(OPT_fpascal_strings); 1190 Opts.MicrosoftExt 1191 = Args.hasArg(OPT_fms_extensions) || Args.hasArg(OPT_fms_compatibility); 1192 Opts.MicrosoftMode = Args.hasArg(OPT_fms_compatibility); 1193 Opts.AsmBlocks = Args.hasArg(OPT_fasm_blocks) || Opts.MicrosoftExt; 1194 Opts.MSCVersion = Args.getLastArgIntValue(OPT_fmsc_version, 0, Diags); 1195 Opts.Borland = Args.hasArg(OPT_fborland_extensions); 1196 Opts.WritableStrings = Args.hasArg(OPT_fwritable_strings); 1197 Opts.ConstStrings = Args.hasFlag(OPT_fconst_strings, OPT_fno_const_strings, 1198 Opts.ConstStrings); 1199 if (Args.hasArg(OPT_fno_lax_vector_conversions)) 1200 Opts.LaxVectorConversions = 0; 1201 if (Args.hasArg(OPT_fno_threadsafe_statics)) 1202 Opts.ThreadsafeStatics = 0; 1203 Opts.Exceptions = Args.hasArg(OPT_fexceptions); 1204 Opts.ObjCExceptions = Args.hasArg(OPT_fobjc_exceptions); 1205 Opts.CXXExceptions = Args.hasArg(OPT_fcxx_exceptions); 1206 Opts.SjLjExceptions = Args.hasArg(OPT_fsjlj_exceptions); 1207 Opts.TraditionalCPP = Args.hasArg(OPT_traditional_cpp); 1208 1209 Opts.RTTI = !Args.hasArg(OPT_fno_rtti); 1210 Opts.Blocks = Args.hasArg(OPT_fblocks); 1211 Opts.BlocksRuntimeOptional = Args.hasArg(OPT_fblocks_runtime_optional); 1212 Opts.Modules = Args.hasArg(OPT_fmodules); 1213 Opts.CharIsSigned = !Args.hasArg(OPT_fno_signed_char); 1214 Opts.WChar = Opts.CPlusPlus && !Args.hasArg(OPT_fno_wchar); 1215 Opts.ShortWChar = Args.hasArg(OPT_fshort_wchar); 1216 Opts.ShortEnums = Args.hasArg(OPT_fshort_enums); 1217 Opts.Freestanding = Args.hasArg(OPT_ffreestanding); 1218 Opts.NoBuiltin = Args.hasArg(OPT_fno_builtin) || Opts.Freestanding; 1219 Opts.AssumeSaneOperatorNew = !Args.hasArg(OPT_fno_assume_sane_operator_new); 1220 Opts.HeinousExtensions = Args.hasArg(OPT_fheinous_gnu_extensions); 1221 Opts.AccessControl = !Args.hasArg(OPT_fno_access_control); 1222 Opts.ElideConstructors = !Args.hasArg(OPT_fno_elide_constructors); 1223 Opts.MathErrno = Args.hasArg(OPT_fmath_errno); 1224 Opts.InstantiationDepth = Args.getLastArgIntValue(OPT_ftemplate_depth, 512, 1225 Diags); 1226 Opts.ConstexprCallDepth = Args.getLastArgIntValue(OPT_fconstexpr_depth, 512, 1227 Diags); 1228 Opts.BracketDepth = Args.getLastArgIntValue(OPT_fbracket_depth, 256, Diags); 1229 Opts.DelayedTemplateParsing = Args.hasArg(OPT_fdelayed_template_parsing); 1230 Opts.NumLargeByValueCopy = Args.getLastArgIntValue(OPT_Wlarge_by_value_copy_EQ, 1231 0, Diags); 1232 Opts.MSBitfields = Args.hasArg(OPT_mms_bitfields); 1233 Opts.ObjCConstantStringClass = 1234 Args.getLastArgValue(OPT_fconstant_string_class); 1235 Opts.ObjCDefaultSynthProperties = 1236 Args.hasArg(OPT_fobjc_default_synthesize_properties); 1237 Opts.EncodeExtendedBlockSig = 1238 Args.hasArg(OPT_fencode_extended_block_signature); 1239 Opts.EmitAllDecls = Args.hasArg(OPT_femit_all_decls); 1240 Opts.PackStruct = Args.getLastArgIntValue(OPT_fpack_struct_EQ, 0, Diags); 1241 Opts.PICLevel = Args.getLastArgIntValue(OPT_pic_level, 0, Diags); 1242 Opts.PIELevel = Args.getLastArgIntValue(OPT_pie_level, 0, Diags); 1243 Opts.Static = Args.hasArg(OPT_static_define); 1244 Opts.DumpRecordLayoutsSimple = Args.hasArg(OPT_fdump_record_layouts_simple); 1245 Opts.DumpRecordLayouts = Opts.DumpRecordLayoutsSimple 1246 || Args.hasArg(OPT_fdump_record_layouts); 1247 Opts.DumpVTableLayouts = Args.hasArg(OPT_fdump_vtable_layouts); 1248 Opts.SpellChecking = !Args.hasArg(OPT_fno_spell_checking); 1249 Opts.NoBitFieldTypeAlign = Args.hasArg(OPT_fno_bitfield_type_align); 1250 Opts.SinglePrecisionConstants = Args.hasArg(OPT_cl_single_precision_constant); 1251 Opts.FastRelaxedMath = Args.hasArg(OPT_cl_fast_relaxed_math); 1252 Opts.MRTD = Args.hasArg(OPT_mrtd); 1253 Opts.HexagonQdsp6Compat = Args.hasArg(OPT_mqdsp6_compat); 1254 Opts.FakeAddressSpaceMap = Args.hasArg(OPT_ffake_address_space_map); 1255 Opts.ParseUnknownAnytype = Args.hasArg(OPT_funknown_anytype); 1256 Opts.DebuggerSupport = Args.hasArg(OPT_fdebugger_support); 1257 Opts.DebuggerCastResultToId = Args.hasArg(OPT_fdebugger_cast_result_to_id); 1258 Opts.DebuggerObjCLiteral = Args.hasArg(OPT_fdebugger_objc_literal); 1259 Opts.ApplePragmaPack = Args.hasArg(OPT_fapple_pragma_pack); 1260 Opts.CurrentModule = Args.getLastArgValue(OPT_fmodule_name); 1261 1262 // Check if -fopenmp is specified. 1263 Opts.OpenMP = Args.hasArg(OPT_fopenmp); 1264 1265 // Record whether the __DEPRECATED define was requested. 1266 Opts.Deprecated = Args.hasFlag(OPT_fdeprecated_macro, 1267 OPT_fno_deprecated_macro, 1268 Opts.Deprecated); 1269 1270 // FIXME: Eliminate this dependency. 1271 unsigned Opt = getOptimizationLevel(Args, IK, Diags), 1272 OptSize = getOptimizationLevelSize(Args, IK, Diags); 1273 Opts.Optimize = Opt != 0; 1274 Opts.OptimizeSize = OptSize != 0; 1275 1276 // This is the __NO_INLINE__ define, which just depends on things like the 1277 // optimization level and -fno-inline, not actually whether the backend has 1278 // inlining enabled. 1279 Opts.NoInlineDefine = !Opt || Args.hasArg(OPT_fno_inline); 1280 1281 Opts.FastMath = Args.hasArg(OPT_ffast_math); 1282 Opts.FiniteMathOnly = Args.hasArg(OPT_ffinite_math_only); 1283 1284 Opts.RetainCommentsFromSystemHeaders = 1285 Args.hasArg(OPT_fretain_comments_from_system_headers); 1286 1287 unsigned SSP = Args.getLastArgIntValue(OPT_stack_protector, 0, Diags); 1288 switch (SSP) { 1289 default: 1290 Diags.Report(diag::err_drv_invalid_value) 1291 << Args.getLastArg(OPT_stack_protector)->getAsString(Args) << SSP; 1292 break; 1293 case 0: Opts.setStackProtector(LangOptions::SSPOff); break; 1294 case 1: Opts.setStackProtector(LangOptions::SSPOn); break; 1295 case 2: Opts.setStackProtector(LangOptions::SSPReq); break; 1296 } 1297 1298 // Parse -fsanitize= arguments. 1299 std::vector<std::string> Sanitizers = Args.getAllArgValues(OPT_fsanitize_EQ); 1300 for (unsigned I = 0, N = Sanitizers.size(); I != N; ++I) { 1301 // Since the Opts.Sanitize* values are bitfields, it's a little tricky to 1302 // efficiently map string values to them. Perform the mapping indirectly: 1303 // convert strings to enumerated values, then switch over the enum to set 1304 // the right bitfield value. 1305 enum Sanitizer { 1306 #define SANITIZER(NAME, ID) \ 1307 ID, 1308 #include "clang/Basic/Sanitizers.def" 1309 Unknown 1310 }; 1311 switch (llvm::StringSwitch<unsigned>(Sanitizers[I]) 1312 #define SANITIZER(NAME, ID) \ 1313 .Case(NAME, ID) 1314 #include "clang/Basic/Sanitizers.def" 1315 .Default(Unknown)) { 1316 #define SANITIZER(NAME, ID) \ 1317 case ID: \ 1318 Opts.Sanitize.ID = true; \ 1319 break; 1320 #include "clang/Basic/Sanitizers.def" 1321 1322 case Unknown: 1323 Diags.Report(diag::err_drv_invalid_value) 1324 << "-fsanitize=" << Sanitizers[I]; 1325 break; 1326 } 1327 } 1328 } 1329 1330 static void ParsePreprocessorArgs(PreprocessorOptions &Opts, ArgList &Args, 1331 FileManager &FileMgr, 1332 DiagnosticsEngine &Diags) { 1333 using namespace options; 1334 Opts.ImplicitPCHInclude = Args.getLastArgValue(OPT_include_pch); 1335 Opts.ImplicitPTHInclude = Args.getLastArgValue(OPT_include_pth); 1336 if (const Arg *A = Args.getLastArg(OPT_token_cache)) 1337 Opts.TokenCache = A->getValue(); 1338 else 1339 Opts.TokenCache = Opts.ImplicitPTHInclude; 1340 Opts.UsePredefines = !Args.hasArg(OPT_undef); 1341 Opts.DetailedRecord = Args.hasArg(OPT_detailed_preprocessing_record); 1342 Opts.DisablePCHValidation = Args.hasArg(OPT_fno_validate_pch); 1343 1344 Opts.DumpDeserializedPCHDecls = Args.hasArg(OPT_dump_deserialized_pch_decls); 1345 for (arg_iterator it = Args.filtered_begin(OPT_error_on_deserialized_pch_decl), 1346 ie = Args.filtered_end(); it != ie; ++it) { 1347 const Arg *A = *it; 1348 Opts.DeserializedPCHDeclsToErrorOn.insert(A->getValue()); 1349 } 1350 1351 if (const Arg *A = Args.getLastArg(OPT_preamble_bytes_EQ)) { 1352 StringRef Value(A->getValue()); 1353 size_t Comma = Value.find(','); 1354 unsigned Bytes = 0; 1355 unsigned EndOfLine = 0; 1356 1357 if (Comma == StringRef::npos || 1358 Value.substr(0, Comma).getAsInteger(10, Bytes) || 1359 Value.substr(Comma + 1).getAsInteger(10, EndOfLine)) 1360 Diags.Report(diag::err_drv_preamble_format); 1361 else { 1362 Opts.PrecompiledPreambleBytes.first = Bytes; 1363 Opts.PrecompiledPreambleBytes.second = (EndOfLine != 0); 1364 } 1365 } 1366 1367 // Add macros from the command line. 1368 for (arg_iterator it = Args.filtered_begin(OPT_D, OPT_U), 1369 ie = Args.filtered_end(); it != ie; ++it) { 1370 if ((*it)->getOption().matches(OPT_D)) 1371 Opts.addMacroDef((*it)->getValue()); 1372 else 1373 Opts.addMacroUndef((*it)->getValue()); 1374 } 1375 1376 Opts.MacroIncludes = Args.getAllArgValues(OPT_imacros); 1377 1378 // Add the ordered list of -includes. 1379 for (arg_iterator it = Args.filtered_begin(OPT_include), 1380 ie = Args.filtered_end(); it != ie; ++it) { 1381 const Arg *A = *it; 1382 Opts.Includes.push_back(A->getValue()); 1383 } 1384 1385 for (arg_iterator it = Args.filtered_begin(OPT_chain_include), 1386 ie = Args.filtered_end(); it != ie; ++it) { 1387 const Arg *A = *it; 1388 Opts.ChainedIncludes.push_back(A->getValue()); 1389 } 1390 1391 // Include 'altivec.h' if -faltivec option present 1392 if (Args.hasArg(OPT_faltivec)) 1393 Opts.Includes.push_back("altivec.h"); 1394 1395 for (arg_iterator it = Args.filtered_begin(OPT_remap_file), 1396 ie = Args.filtered_end(); it != ie; ++it) { 1397 const Arg *A = *it; 1398 std::pair<StringRef,StringRef> Split = 1399 StringRef(A->getValue()).split(';'); 1400 1401 if (Split.second.empty()) { 1402 Diags.Report(diag::err_drv_invalid_remap_file) << A->getAsString(Args); 1403 continue; 1404 } 1405 1406 Opts.addRemappedFile(Split.first, Split.second); 1407 } 1408 1409 if (Arg *A = Args.getLastArg(OPT_fobjc_arc_cxxlib_EQ)) { 1410 StringRef Name = A->getValue(); 1411 unsigned Library = llvm::StringSwitch<unsigned>(Name) 1412 .Case("libc++", ARCXX_libcxx) 1413 .Case("libstdc++", ARCXX_libstdcxx) 1414 .Case("none", ARCXX_nolib) 1415 .Default(~0U); 1416 if (Library == ~0U) 1417 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Name; 1418 else 1419 Opts.ObjCXXARCStandardLibrary = (ObjCXXARCStandardLibraryKind)Library; 1420 } 1421 } 1422 1423 static void ParsePreprocessorOutputArgs(PreprocessorOutputOptions &Opts, 1424 ArgList &Args, 1425 frontend::ActionKind Action) { 1426 using namespace options; 1427 1428 switch (Action) { 1429 case frontend::ASTDeclList: 1430 case frontend::ASTDump: 1431 case frontend::ASTDumpXML: 1432 case frontend::ASTPrint: 1433 case frontend::ASTView: 1434 case frontend::EmitAssembly: 1435 case frontend::EmitBC: 1436 case frontend::EmitHTML: 1437 case frontend::EmitLLVM: 1438 case frontend::EmitLLVMOnly: 1439 case frontend::EmitCodeGenOnly: 1440 case frontend::EmitObj: 1441 case frontend::FixIt: 1442 case frontend::GenerateModule: 1443 case frontend::GeneratePCH: 1444 case frontend::GeneratePTH: 1445 case frontend::ParseSyntaxOnly: 1446 case frontend::PluginAction: 1447 case frontend::PrintDeclContext: 1448 case frontend::RewriteObjC: 1449 case frontend::RewriteTest: 1450 case frontend::RunAnalysis: 1451 case frontend::MigrateSource: 1452 Opts.ShowCPP = 0; 1453 break; 1454 1455 case frontend::DumpRawTokens: 1456 case frontend::DumpTokens: 1457 case frontend::InitOnly: 1458 case frontend::PrintPreamble: 1459 case frontend::PrintPreprocessedInput: 1460 case frontend::RewriteMacros: 1461 case frontend::RunPreprocessorOnly: 1462 Opts.ShowCPP = !Args.hasArg(OPT_dM); 1463 break; 1464 } 1465 1466 Opts.ShowComments = Args.hasArg(OPT_C); 1467 Opts.ShowLineMarkers = !Args.hasArg(OPT_P); 1468 Opts.ShowMacroComments = Args.hasArg(OPT_CC); 1469 Opts.ShowMacros = Args.hasArg(OPT_dM) || Args.hasArg(OPT_dD); 1470 Opts.RewriteIncludes = Args.hasArg(OPT_frewrite_includes); 1471 } 1472 1473 static void ParseTargetArgs(TargetOptions &Opts, ArgList &Args) { 1474 using namespace options; 1475 Opts.ABI = Args.getLastArgValue(OPT_target_abi); 1476 Opts.CXXABI = Args.getLastArgValue(OPT_cxx_abi); 1477 Opts.CPU = Args.getLastArgValue(OPT_target_cpu); 1478 Opts.FeaturesAsWritten = Args.getAllArgValues(OPT_target_feature); 1479 Opts.LinkerVersion = Args.getLastArgValue(OPT_target_linker_version); 1480 Opts.Triple = llvm::Triple::normalize(Args.getLastArgValue(OPT_triple)); 1481 1482 // Use the default target triple if unspecified. 1483 if (Opts.Triple.empty()) 1484 Opts.Triple = llvm::sys::getDefaultTargetTriple(); 1485 } 1486 1487 // 1488 1489 bool CompilerInvocation::CreateFromArgs(CompilerInvocation &Res, 1490 const char *const *ArgBegin, 1491 const char *const *ArgEnd, 1492 DiagnosticsEngine &Diags) { 1493 bool Success = true; 1494 1495 // Parse the arguments. 1496 OwningPtr<OptTable> Opts(createDriverOptTable()); 1497 unsigned MissingArgIndex, MissingArgCount; 1498 OwningPtr<InputArgList> Args( 1499 Opts->ParseArgs(ArgBegin, ArgEnd,MissingArgIndex, MissingArgCount)); 1500 1501 // Check for missing argument error. 1502 if (MissingArgCount) { 1503 Diags.Report(diag::err_drv_missing_argument) 1504 << Args->getArgString(MissingArgIndex) << MissingArgCount; 1505 Success = false; 1506 } 1507 1508 // Issue errors on unknown arguments. 1509 for (arg_iterator it = Args->filtered_begin(OPT_UNKNOWN), 1510 ie = Args->filtered_end(); it != ie; ++it) { 1511 Diags.Report(diag::err_drv_unknown_argument) << (*it)->getAsString(*Args); 1512 Success = false; 1513 } 1514 1515 // Issue errors on arguments that are not valid for CC1. 1516 for (ArgList::iterator I = Args->begin(), E = Args->end(); 1517 I != E; ++I) { 1518 if (!(*I)->getOption().hasFlag(options::CC1Option)) { 1519 Diags.Report(diag::err_drv_unknown_argument) << (*I)->getAsString(*Args); 1520 Success = false; 1521 } 1522 } 1523 1524 Success = ParseAnalyzerArgs(*Res.getAnalyzerOpts(), *Args, Diags) && Success; 1525 Success = ParseMigratorArgs(Res.getMigratorOpts(), *Args) && Success; 1526 ParseDependencyOutputArgs(Res.getDependencyOutputOpts(), *Args); 1527 Success = ParseDiagnosticArgs(Res.getDiagnosticOpts(), *Args, &Diags) 1528 && Success; 1529 ParseCommentArgs(Res.getLangOpts()->CommentOpts, *Args); 1530 ParseFileSystemArgs(Res.getFileSystemOpts(), *Args); 1531 // FIXME: We shouldn't have to pass the DashX option around here 1532 InputKind DashX = ParseFrontendArgs(Res.getFrontendOpts(), *Args, Diags); 1533 Success = ParseCodeGenArgs(Res.getCodeGenOpts(), *Args, DashX, Diags) 1534 && Success; 1535 ParseHeaderSearchArgs(Res.getHeaderSearchOpts(), *Args); 1536 if (DashX != IK_AST && DashX != IK_LLVM_IR) { 1537 ParseLangArgs(*Res.getLangOpts(), *Args, DashX, Diags); 1538 if (Res.getFrontendOpts().ProgramAction == frontend::RewriteObjC) 1539 Res.getLangOpts()->ObjCExceptions = 1; 1540 } 1541 // FIXME: ParsePreprocessorArgs uses the FileManager to read the contents of 1542 // PCH file and find the original header name. Remove the need to do that in 1543 // ParsePreprocessorArgs and remove the FileManager 1544 // parameters from the function and the "FileManager.h" #include. 1545 FileManager FileMgr(Res.getFileSystemOpts()); 1546 ParsePreprocessorArgs(Res.getPreprocessorOpts(), *Args, FileMgr, Diags); 1547 ParsePreprocessorOutputArgs(Res.getPreprocessorOutputOpts(), *Args, 1548 Res.getFrontendOpts().ProgramAction); 1549 ParseTargetArgs(Res.getTargetOpts(), *Args); 1550 1551 return Success; 1552 } 1553 1554 namespace { 1555 1556 class ModuleSignature { 1557 SmallVector<uint64_t, 16> Data; 1558 unsigned CurBit; 1559 uint64_t CurValue; 1560 1561 public: 1562 ModuleSignature() : CurBit(0), CurValue(0) { } 1563 1564 void add(uint64_t Value, unsigned Bits); 1565 void add(StringRef Value); 1566 void flush(); 1567 1568 llvm::APInt getAsInteger() const; 1569 }; 1570 } 1571 1572 void ModuleSignature::add(uint64_t Value, unsigned int NumBits) { 1573 CurValue |= Value << CurBit; 1574 if (CurBit + NumBits < 64) { 1575 CurBit += NumBits; 1576 return; 1577 } 1578 1579 // Add the current word. 1580 Data.push_back(CurValue); 1581 1582 if (CurBit) 1583 CurValue = Value >> (64-CurBit); 1584 else 1585 CurValue = 0; 1586 CurBit = (CurBit+NumBits) & 63; 1587 } 1588 1589 void ModuleSignature::flush() { 1590 if (CurBit == 0) 1591 return; 1592 1593 Data.push_back(CurValue); 1594 CurBit = 0; 1595 CurValue = 0; 1596 } 1597 1598 void ModuleSignature::add(StringRef Value) { 1599 for (StringRef::iterator I = Value.begin(), IEnd = Value.end(); I != IEnd;++I) 1600 add(*I, 8); 1601 } 1602 1603 llvm::APInt ModuleSignature::getAsInteger() const { 1604 return llvm::APInt(Data.size() * 64, Data); 1605 } 1606 1607 std::string CompilerInvocation::getModuleHash() const { 1608 using llvm::hash_code; 1609 using llvm::hash_value; 1610 using llvm::hash_combine; 1611 1612 // Start the signature with the compiler version. 1613 // FIXME: We'd rather use something more cryptographically sound than 1614 // CityHash, but this will do for now. 1615 hash_code code = hash_value(getClangFullRepositoryVersion()); 1616 1617 // Extend the signature with the language options 1618 #define LANGOPT(Name, Bits, Default, Description) \ 1619 code = hash_combine(code, LangOpts->Name); 1620 #define ENUM_LANGOPT(Name, Type, Bits, Default, Description) \ 1621 code = hash_combine(code, static_cast<unsigned>(LangOpts->get##Name())); 1622 #define BENIGN_LANGOPT(Name, Bits, Default, Description) 1623 #define BENIGN_ENUM_LANGOPT(Name, Type, Bits, Default, Description) 1624 #include "clang/Basic/LangOptions.def" 1625 1626 // Extend the signature with the target options. 1627 code = hash_combine(code, TargetOpts->Triple, TargetOpts->CPU, 1628 TargetOpts->ABI, TargetOpts->CXXABI, 1629 TargetOpts->LinkerVersion); 1630 for (unsigned i = 0, n = TargetOpts->FeaturesAsWritten.size(); i != n; ++i) 1631 code = hash_combine(code, TargetOpts->FeaturesAsWritten[i]); 1632 1633 // Extend the signature with preprocessor options. 1634 const PreprocessorOptions &ppOpts = getPreprocessorOpts(); 1635 const HeaderSearchOptions &hsOpts = getHeaderSearchOpts(); 1636 code = hash_combine(code, ppOpts.UsePredefines, ppOpts.DetailedRecord); 1637 1638 std::vector<StringRef> MacroDefs; 1639 for (std::vector<std::pair<std::string, bool/*isUndef*/> >::const_iterator 1640 I = getPreprocessorOpts().Macros.begin(), 1641 IEnd = getPreprocessorOpts().Macros.end(); 1642 I != IEnd; ++I) { 1643 // If we're supposed to ignore this macro for the purposes of modules, 1644 // don't put it into the hash. 1645 if (!hsOpts.ModulesIgnoreMacros.empty()) { 1646 // Check whether we're ignoring this macro. 1647 StringRef MacroDef = I->first; 1648 if (hsOpts.ModulesIgnoreMacros.count(MacroDef.split('=').first)) 1649 continue; 1650 } 1651 1652 code = hash_combine(code, I->first, I->second); 1653 } 1654 1655 // Extend the signature with the sysroot. 1656 code = hash_combine(code, hsOpts.Sysroot, hsOpts.UseBuiltinIncludes, 1657 hsOpts.UseStandardSystemIncludes, 1658 hsOpts.UseStandardCXXIncludes, 1659 hsOpts.UseLibcxx); 1660 1661 return llvm::APInt(64, code).toString(36, /*Signed=*/false); 1662 } 1663