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 Opts.SplitDwarfFile = Args.getLastArgValue(OPT_split_dwarf_file); 319 320 Opts.ModulesAutolink = Args.hasArg(OPT_fmodules_autolink); 321 Opts.DisableLLVMOpts = Args.hasArg(OPT_disable_llvm_optzns); 322 Opts.DisableRedZone = Args.hasArg(OPT_disable_red_zone); 323 Opts.ForbidGuardVariables = Args.hasArg(OPT_fforbid_guard_variables); 324 Opts.UseRegisterSizedBitfieldAccess = Args.hasArg( 325 OPT_fuse_register_sized_bitfield_access); 326 Opts.RelaxedAliasing = Args.hasArg(OPT_relaxed_aliasing); 327 Opts.DwarfDebugFlags = Args.getLastArgValue(OPT_dwarf_debug_flags); 328 Opts.MergeAllConstants = !Args.hasArg(OPT_fno_merge_all_constants); 329 Opts.NoCommon = Args.hasArg(OPT_fno_common); 330 Opts.NoImplicitFloat = Args.hasArg(OPT_no_implicit_float); 331 Opts.OptimizeSize = getOptimizationLevelSize(Args, IK, Diags); 332 Opts.SimplifyLibCalls = !(Args.hasArg(OPT_fno_builtin) || 333 Args.hasArg(OPT_ffreestanding)); 334 Opts.UnrollLoops = Args.hasArg(OPT_funroll_loops) || 335 (Opts.OptimizationLevel > 1 && !Opts.OptimizeSize); 336 337 Opts.AsmVerbose = Args.hasArg(OPT_masm_verbose); 338 Opts.ObjCAutoRefCountExceptions = Args.hasArg(OPT_fobjc_arc_exceptions); 339 Opts.CUDAIsDevice = Args.hasArg(OPT_fcuda_is_device); 340 Opts.CXAAtExit = !Args.hasArg(OPT_fno_use_cxa_atexit); 341 Opts.CXXCtorDtorAliases = Args.hasArg(OPT_mconstructor_aliases); 342 Opts.CodeModel = Args.getLastArgValue(OPT_mcode_model); 343 Opts.DebugPass = Args.getLastArgValue(OPT_mdebug_pass); 344 Opts.DisableFPElim = Args.hasArg(OPT_mdisable_fp_elim); 345 Opts.DisableTailCalls = Args.hasArg(OPT_mdisable_tail_calls); 346 Opts.FloatABI = Args.getLastArgValue(OPT_mfloat_abi); 347 Opts.HiddenWeakVTables = Args.hasArg(OPT_fhidden_weak_vtables); 348 Opts.LessPreciseFPMAD = Args.hasArg(OPT_cl_mad_enable); 349 Opts.LimitFloatPrecision = Args.getLastArgValue(OPT_mlimit_float_precision); 350 Opts.NoInfsFPMath = (Args.hasArg(OPT_menable_no_infinities) || 351 Args.hasArg(OPT_cl_finite_math_only)|| 352 Args.hasArg(OPT_cl_fast_relaxed_math)); 353 Opts.NoNaNsFPMath = (Args.hasArg(OPT_menable_no_nans) || 354 Args.hasArg(OPT_cl_finite_math_only)|| 355 Args.hasArg(OPT_cl_fast_relaxed_math)); 356 Opts.NoZeroInitializedInBSS = Args.hasArg(OPT_mno_zero_initialized_in_bss); 357 Opts.BackendOptions = Args.getAllArgValues(OPT_backend_option); 358 Opts.NumRegisterParameters = Args.getLastArgIntValue(OPT_mregparm, 0, Diags); 359 Opts.NoGlobalMerge = Args.hasArg(OPT_mno_global_merge); 360 Opts.NoExecStack = Args.hasArg(OPT_mno_exec_stack); 361 Opts.RelaxAll = Args.hasArg(OPT_mrelax_all); 362 Opts.OmitLeafFramePointer = Args.hasArg(OPT_momit_leaf_frame_pointer); 363 Opts.SaveTempLabels = Args.hasArg(OPT_msave_temp_labels); 364 Opts.NoDwarf2CFIAsm = Args.hasArg(OPT_fno_dwarf2_cfi_asm); 365 Opts.NoDwarfDirectoryAsm = Args.hasArg(OPT_fno_dwarf_directory_asm); 366 Opts.SoftFloat = Args.hasArg(OPT_msoft_float); 367 Opts.StrictEnums = Args.hasArg(OPT_fstrict_enums); 368 Opts.UnsafeFPMath = Args.hasArg(OPT_menable_unsafe_fp_math) || 369 Args.hasArg(OPT_cl_unsafe_math_optimizations) || 370 Args.hasArg(OPT_cl_fast_relaxed_math); 371 Opts.UnwindTables = Args.hasArg(OPT_munwind_tables); 372 Opts.RelocationModel = Args.getLastArgValue(OPT_mrelocation_model, "pic"); 373 Opts.TrapFuncName = Args.getLastArgValue(OPT_ftrap_function_EQ); 374 Opts.UseInitArray = Args.hasArg(OPT_fuse_init_array); 375 376 Opts.FunctionSections = Args.hasArg(OPT_ffunction_sections); 377 Opts.DataSections = Args.hasArg(OPT_fdata_sections); 378 379 Opts.MainFileName = Args.getLastArgValue(OPT_main_file_name); 380 Opts.VerifyModule = !Args.hasArg(OPT_disable_llvm_verifier); 381 Opts.SanitizeRecover = !Args.hasArg(OPT_fno_sanitize_recover); 382 383 Opts.InstrumentFunctions = Args.hasArg(OPT_finstrument_functions); 384 Opts.InstrumentForProfiling = Args.hasArg(OPT_pg); 385 Opts.EmitGcovArcs = Args.hasArg(OPT_femit_coverage_data); 386 Opts.EmitGcovNotes = Args.hasArg(OPT_femit_coverage_notes); 387 Opts.EmitOpenCLArgMetadata = Args.hasArg(OPT_cl_kernel_arg_info); 388 Opts.CoverageFile = Args.getLastArgValue(OPT_coverage_file); 389 Opts.DebugCompilationDir = Args.getLastArgValue(OPT_fdebug_compilation_dir); 390 Opts.LinkBitcodeFile = Args.getLastArgValue(OPT_mlink_bitcode_file); 391 Opts.SanitizerBlacklistFile = Args.getLastArgValue(OPT_fsanitize_blacklist); 392 Opts.SanitizeMemoryTrackOrigins = 393 Args.hasArg(OPT_fsanitize_memory_track_origins); 394 Opts.SanitizeAddressZeroBaseShadow = 395 Args.hasArg(OPT_fsanitize_address_zero_base_shadow); 396 Opts.SanitizeUndefinedTrapOnError = 397 Args.hasArg(OPT_fsanitize_undefined_trap_on_error); 398 Opts.SSPBufferSize = 399 Args.getLastArgIntValue(OPT_stack_protector_buffer_size, 8, Diags); 400 Opts.StackRealignment = Args.hasArg(OPT_mstackrealign); 401 if (Arg *A = Args.getLastArg(OPT_mstack_alignment)) { 402 StringRef Val = A->getValue(); 403 unsigned StackAlignment = Opts.StackAlignment; 404 Val.getAsInteger(10, StackAlignment); 405 Opts.StackAlignment = StackAlignment; 406 } 407 408 if (Arg *A = Args.getLastArg(OPT_fobjc_dispatch_method_EQ)) { 409 StringRef Name = A->getValue(); 410 unsigned Method = llvm::StringSwitch<unsigned>(Name) 411 .Case("legacy", CodeGenOptions::Legacy) 412 .Case("non-legacy", CodeGenOptions::NonLegacy) 413 .Case("mixed", CodeGenOptions::Mixed) 414 .Default(~0U); 415 if (Method == ~0U) { 416 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Name; 417 Success = false; 418 } else { 419 Opts.setObjCDispatchMethod( 420 static_cast<CodeGenOptions::ObjCDispatchMethodKind>(Method)); 421 } 422 } 423 424 if (Arg *A = Args.getLastArg(OPT_ftlsmodel_EQ)) { 425 StringRef Name = A->getValue(); 426 unsigned Model = llvm::StringSwitch<unsigned>(Name) 427 .Case("global-dynamic", CodeGenOptions::GeneralDynamicTLSModel) 428 .Case("local-dynamic", CodeGenOptions::LocalDynamicTLSModel) 429 .Case("initial-exec", CodeGenOptions::InitialExecTLSModel) 430 .Case("local-exec", CodeGenOptions::LocalExecTLSModel) 431 .Default(~0U); 432 if (Model == ~0U) { 433 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Name; 434 Success = false; 435 } else { 436 Opts.setDefaultTLSModel(static_cast<CodeGenOptions::TLSModel>(Model)); 437 } 438 } 439 440 if (Arg *A = Args.getLastArg(OPT_ffp_contract)) { 441 StringRef Val = A->getValue(); 442 if (Val == "fast") 443 Opts.setFPContractMode(CodeGenOptions::FPC_Fast); 444 else if (Val == "on") 445 Opts.setFPContractMode(CodeGenOptions::FPC_On); 446 else if (Val == "off") 447 Opts.setFPContractMode(CodeGenOptions::FPC_Off); 448 else 449 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Val; 450 } 451 452 return Success; 453 } 454 455 static void ParseDependencyOutputArgs(DependencyOutputOptions &Opts, 456 ArgList &Args) { 457 using namespace options; 458 Opts.OutputFile = Args.getLastArgValue(OPT_dependency_file); 459 Opts.Targets = Args.getAllArgValues(OPT_MT); 460 Opts.IncludeSystemHeaders = Args.hasArg(OPT_sys_header_deps); 461 Opts.UsePhonyTargets = Args.hasArg(OPT_MP); 462 Opts.ShowHeaderIncludes = Args.hasArg(OPT_H); 463 Opts.HeaderIncludeOutputFile = Args.getLastArgValue(OPT_header_include_file); 464 Opts.AddMissingHeaderDeps = Args.hasArg(OPT_MG); 465 Opts.DOTOutputFile = Args.getLastArgValue(OPT_dependency_dot); 466 } 467 468 bool clang::ParseDiagnosticArgs(DiagnosticOptions &Opts, ArgList &Args, 469 DiagnosticsEngine *Diags) { 470 using namespace options; 471 bool Success = true; 472 473 Opts.DiagnosticLogFile = Args.getLastArgValue(OPT_diagnostic_log_file); 474 Opts.DiagnosticSerializationFile = 475 Args.getLastArgValue(OPT_diagnostic_serialized_file); 476 Opts.IgnoreWarnings = Args.hasArg(OPT_w); 477 Opts.NoRewriteMacros = Args.hasArg(OPT_Wno_rewrite_macros); 478 Opts.Pedantic = Args.hasArg(OPT_pedantic); 479 Opts.PedanticErrors = Args.hasArg(OPT_pedantic_errors); 480 Opts.ShowCarets = !Args.hasArg(OPT_fno_caret_diagnostics); 481 Opts.ShowColors = Args.hasArg(OPT_fcolor_diagnostics); 482 Opts.ShowColumn = Args.hasFlag(OPT_fshow_column, 483 OPT_fno_show_column, 484 /*Default=*/true); 485 Opts.ShowFixits = !Args.hasArg(OPT_fno_diagnostics_fixit_info); 486 Opts.ShowLocation = !Args.hasArg(OPT_fno_show_source_location); 487 Opts.ShowOptionNames = Args.hasArg(OPT_fdiagnostics_show_option); 488 489 // Default behavior is to not to show note include stacks. 490 Opts.ShowNoteIncludeStack = false; 491 if (Arg *A = Args.getLastArg(OPT_fdiagnostics_show_note_include_stack, 492 OPT_fno_diagnostics_show_note_include_stack)) 493 if (A->getOption().matches(OPT_fdiagnostics_show_note_include_stack)) 494 Opts.ShowNoteIncludeStack = true; 495 496 StringRef ShowOverloads = 497 Args.getLastArgValue(OPT_fshow_overloads_EQ, "all"); 498 if (ShowOverloads == "best") 499 Opts.setShowOverloads(Ovl_Best); 500 else if (ShowOverloads == "all") 501 Opts.setShowOverloads(Ovl_All); 502 else { 503 Success = false; 504 if (Diags) 505 Diags->Report(diag::err_drv_invalid_value) 506 << Args.getLastArg(OPT_fshow_overloads_EQ)->getAsString(Args) 507 << ShowOverloads; 508 } 509 510 StringRef ShowCategory = 511 Args.getLastArgValue(OPT_fdiagnostics_show_category, "none"); 512 if (ShowCategory == "none") 513 Opts.ShowCategories = 0; 514 else if (ShowCategory == "id") 515 Opts.ShowCategories = 1; 516 else if (ShowCategory == "name") 517 Opts.ShowCategories = 2; 518 else { 519 Success = false; 520 if (Diags) 521 Diags->Report(diag::err_drv_invalid_value) 522 << Args.getLastArg(OPT_fdiagnostics_show_category)->getAsString(Args) 523 << ShowCategory; 524 } 525 526 StringRef Format = 527 Args.getLastArgValue(OPT_fdiagnostics_format, "clang"); 528 if (Format == "clang") 529 Opts.setFormat(DiagnosticOptions::Clang); 530 else if (Format == "msvc") 531 Opts.setFormat(DiagnosticOptions::Msvc); 532 else if (Format == "vi") 533 Opts.setFormat(DiagnosticOptions::Vi); 534 else { 535 Success = false; 536 if (Diags) 537 Diags->Report(diag::err_drv_invalid_value) 538 << Args.getLastArg(OPT_fdiagnostics_format)->getAsString(Args) 539 << Format; 540 } 541 542 Opts.ShowSourceRanges = Args.hasArg(OPT_fdiagnostics_print_source_range_info); 543 Opts.ShowParseableFixits = Args.hasArg(OPT_fdiagnostics_parseable_fixits); 544 Opts.ShowPresumedLoc = !Args.hasArg(OPT_fno_diagnostics_use_presumed_location); 545 Opts.VerifyDiagnostics = Args.hasArg(OPT_verify); 546 Opts.ElideType = !Args.hasArg(OPT_fno_elide_type); 547 Opts.ShowTemplateTree = Args.hasArg(OPT_fdiagnostics_show_template_tree); 548 Opts.ErrorLimit = Args.getLastArgIntValue(OPT_ferror_limit, 0, Diags); 549 Opts.MacroBacktraceLimit 550 = Args.getLastArgIntValue(OPT_fmacro_backtrace_limit, 551 DiagnosticOptions::DefaultMacroBacktraceLimit, Diags); 552 Opts.TemplateBacktraceLimit 553 = Args.getLastArgIntValue(OPT_ftemplate_backtrace_limit, 554 DiagnosticOptions::DefaultTemplateBacktraceLimit, 555 Diags); 556 Opts.ConstexprBacktraceLimit 557 = Args.getLastArgIntValue(OPT_fconstexpr_backtrace_limit, 558 DiagnosticOptions::DefaultConstexprBacktraceLimit, 559 Diags); 560 Opts.TabStop = Args.getLastArgIntValue(OPT_ftabstop, 561 DiagnosticOptions::DefaultTabStop, Diags); 562 if (Opts.TabStop == 0 || Opts.TabStop > DiagnosticOptions::MaxTabStop) { 563 Opts.TabStop = DiagnosticOptions::DefaultTabStop; 564 if (Diags) 565 Diags->Report(diag::warn_ignoring_ftabstop_value) 566 << Opts.TabStop << DiagnosticOptions::DefaultTabStop; 567 } 568 Opts.MessageLength = Args.getLastArgIntValue(OPT_fmessage_length, 0, Diags); 569 addWarningArgs(Args, Opts.Warnings); 570 571 return Success; 572 } 573 574 static void ParseFileSystemArgs(FileSystemOptions &Opts, ArgList &Args) { 575 Opts.WorkingDir = Args.getLastArgValue(OPT_working_directory); 576 } 577 578 static InputKind ParseFrontendArgs(FrontendOptions &Opts, ArgList &Args, 579 DiagnosticsEngine &Diags) { 580 using namespace options; 581 Opts.ProgramAction = frontend::ParseSyntaxOnly; 582 if (const Arg *A = Args.getLastArg(OPT_Action_Group)) { 583 switch (A->getOption().getID()) { 584 default: 585 llvm_unreachable("Invalid option in group!"); 586 case OPT_ast_list: 587 Opts.ProgramAction = frontend::ASTDeclList; break; 588 case OPT_ast_dump: 589 Opts.ProgramAction = frontend::ASTDump; break; 590 case OPT_ast_dump_xml: 591 Opts.ProgramAction = frontend::ASTDumpXML; break; 592 case OPT_ast_print: 593 Opts.ProgramAction = frontend::ASTPrint; break; 594 case OPT_ast_view: 595 Opts.ProgramAction = frontend::ASTView; break; 596 case OPT_dump_raw_tokens: 597 Opts.ProgramAction = frontend::DumpRawTokens; break; 598 case OPT_dump_tokens: 599 Opts.ProgramAction = frontend::DumpTokens; break; 600 case OPT_S: 601 Opts.ProgramAction = frontend::EmitAssembly; break; 602 case OPT_emit_llvm_bc: 603 Opts.ProgramAction = frontend::EmitBC; break; 604 case OPT_emit_html: 605 Opts.ProgramAction = frontend::EmitHTML; break; 606 case OPT_emit_llvm: 607 Opts.ProgramAction = frontend::EmitLLVM; break; 608 case OPT_emit_llvm_only: 609 Opts.ProgramAction = frontend::EmitLLVMOnly; break; 610 case OPT_emit_codegen_only: 611 Opts.ProgramAction = frontend::EmitCodeGenOnly; break; 612 case OPT_emit_obj: 613 Opts.ProgramAction = frontend::EmitObj; break; 614 case OPT_fixit_EQ: 615 Opts.FixItSuffix = A->getValue(); 616 // fall-through! 617 case OPT_fixit: 618 Opts.ProgramAction = frontend::FixIt; break; 619 case OPT_emit_module: 620 Opts.ProgramAction = frontend::GenerateModule; break; 621 case OPT_emit_pch: 622 Opts.ProgramAction = frontend::GeneratePCH; break; 623 case OPT_emit_pth: 624 Opts.ProgramAction = frontend::GeneratePTH; break; 625 case OPT_init_only: 626 Opts.ProgramAction = frontend::InitOnly; break; 627 case OPT_fsyntax_only: 628 Opts.ProgramAction = frontend::ParseSyntaxOnly; break; 629 case OPT_print_decl_contexts: 630 Opts.ProgramAction = frontend::PrintDeclContext; break; 631 case OPT_print_preamble: 632 Opts.ProgramAction = frontend::PrintPreamble; break; 633 case OPT_E: 634 Opts.ProgramAction = frontend::PrintPreprocessedInput; break; 635 case OPT_rewrite_macros: 636 Opts.ProgramAction = frontend::RewriteMacros; break; 637 case OPT_rewrite_objc: 638 Opts.ProgramAction = frontend::RewriteObjC; break; 639 case OPT_rewrite_test: 640 Opts.ProgramAction = frontend::RewriteTest; break; 641 case OPT_analyze: 642 Opts.ProgramAction = frontend::RunAnalysis; break; 643 case OPT_migrate: 644 Opts.ProgramAction = frontend::MigrateSource; break; 645 case OPT_Eonly: 646 Opts.ProgramAction = frontend::RunPreprocessorOnly; break; 647 } 648 } 649 650 if (const Arg* A = Args.getLastArg(OPT_plugin)) { 651 Opts.Plugins.push_back(A->getValue(0)); 652 Opts.ProgramAction = frontend::PluginAction; 653 Opts.ActionName = A->getValue(); 654 655 for (arg_iterator it = Args.filtered_begin(OPT_plugin_arg), 656 end = Args.filtered_end(); it != end; ++it) { 657 if ((*it)->getValue(0) == Opts.ActionName) 658 Opts.PluginArgs.push_back((*it)->getValue(1)); 659 } 660 } 661 662 Opts.AddPluginActions = Args.getAllArgValues(OPT_add_plugin); 663 Opts.AddPluginArgs.resize(Opts.AddPluginActions.size()); 664 for (int i = 0, e = Opts.AddPluginActions.size(); i != e; ++i) { 665 for (arg_iterator it = Args.filtered_begin(OPT_plugin_arg), 666 end = Args.filtered_end(); it != end; ++it) { 667 if ((*it)->getValue(0) == Opts.AddPluginActions[i]) 668 Opts.AddPluginArgs[i].push_back((*it)->getValue(1)); 669 } 670 } 671 672 if (const Arg *A = Args.getLastArg(OPT_code_completion_at)) { 673 Opts.CodeCompletionAt = 674 ParsedSourceLocation::FromString(A->getValue()); 675 if (Opts.CodeCompletionAt.FileName.empty()) 676 Diags.Report(diag::err_drv_invalid_value) 677 << A->getAsString(Args) << A->getValue(); 678 } 679 Opts.DisableFree = Args.hasArg(OPT_disable_free); 680 681 Opts.OutputFile = Args.getLastArgValue(OPT_o); 682 Opts.Plugins = Args.getAllArgValues(OPT_load); 683 Opts.RelocatablePCH = Args.hasArg(OPT_relocatable_pch); 684 Opts.ShowHelp = Args.hasArg(OPT_help); 685 Opts.ShowStats = Args.hasArg(OPT_print_stats); 686 Opts.ShowTimers = Args.hasArg(OPT_ftime_report); 687 Opts.ShowVersion = Args.hasArg(OPT_version); 688 Opts.ASTMergeFiles = Args.getAllArgValues(OPT_ast_merge); 689 Opts.LLVMArgs = Args.getAllArgValues(OPT_mllvm); 690 Opts.FixWhatYouCan = Args.hasArg(OPT_fix_what_you_can); 691 Opts.FixOnlyWarnings = Args.hasArg(OPT_fix_only_warnings); 692 Opts.FixAndRecompile = Args.hasArg(OPT_fixit_recompile); 693 Opts.FixToTemporaries = Args.hasArg(OPT_fixit_to_temp); 694 Opts.ASTDumpFilter = Args.getLastArgValue(OPT_ast_dump_filter); 695 Opts.UseGlobalModuleIndex = !Args.hasArg(OPT_fno_modules_global_index); 696 Opts.GenerateGlobalModuleIndex = Opts.UseGlobalModuleIndex; 697 698 Opts.CodeCompleteOpts.IncludeMacros 699 = Args.hasArg(OPT_code_completion_macros); 700 Opts.CodeCompleteOpts.IncludeCodePatterns 701 = Args.hasArg(OPT_code_completion_patterns); 702 Opts.CodeCompleteOpts.IncludeGlobals 703 = !Args.hasArg(OPT_no_code_completion_globals); 704 Opts.CodeCompleteOpts.IncludeBriefComments 705 = Args.hasArg(OPT_code_completion_brief_comments); 706 707 Opts.OverrideRecordLayoutsFile 708 = Args.getLastArgValue(OPT_foverride_record_layout_EQ); 709 if (const Arg *A = Args.getLastArg(OPT_arcmt_check, 710 OPT_arcmt_modify, 711 OPT_arcmt_migrate)) { 712 switch (A->getOption().getID()) { 713 default: 714 llvm_unreachable("missed a case"); 715 case OPT_arcmt_check: 716 Opts.ARCMTAction = FrontendOptions::ARCMT_Check; 717 break; 718 case OPT_arcmt_modify: 719 Opts.ARCMTAction = FrontendOptions::ARCMT_Modify; 720 break; 721 case OPT_arcmt_migrate: 722 Opts.ARCMTAction = FrontendOptions::ARCMT_Migrate; 723 break; 724 } 725 } 726 Opts.MTMigrateDir = Args.getLastArgValue(OPT_mt_migrate_directory); 727 Opts.ARCMTMigrateReportOut 728 = Args.getLastArgValue(OPT_arcmt_migrate_report_output); 729 Opts.ARCMTMigrateEmitARCErrors 730 = Args.hasArg(OPT_arcmt_migrate_emit_arc_errors); 731 732 if (Args.hasArg(OPT_objcmt_migrate_literals)) 733 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_Literals; 734 if (Args.hasArg(OPT_objcmt_migrate_subscripting)) 735 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_Subscripting; 736 737 if (Opts.ARCMTAction != FrontendOptions::ARCMT_None && 738 Opts.ObjCMTAction != FrontendOptions::ObjCMT_None) { 739 Diags.Report(diag::err_drv_argument_not_allowed_with) 740 << "ARC migration" << "ObjC migration"; 741 } 742 743 InputKind DashX = IK_None; 744 if (const Arg *A = Args.getLastArg(OPT_x)) { 745 DashX = llvm::StringSwitch<InputKind>(A->getValue()) 746 .Case("c", IK_C) 747 .Case("cl", IK_OpenCL) 748 .Case("cuda", IK_CUDA) 749 .Case("c++", IK_CXX) 750 .Case("objective-c", IK_ObjC) 751 .Case("objective-c++", IK_ObjCXX) 752 .Case("cpp-output", IK_PreprocessedC) 753 .Case("assembler-with-cpp", IK_Asm) 754 .Case("c++-cpp-output", IK_PreprocessedCXX) 755 .Case("objective-c-cpp-output", IK_PreprocessedObjC) 756 .Case("objc-cpp-output", IK_PreprocessedObjC) 757 .Case("objective-c++-cpp-output", IK_PreprocessedObjCXX) 758 .Case("objc++-cpp-output", IK_PreprocessedObjCXX) 759 .Case("c-header", IK_C) 760 .Case("cl-header", IK_OpenCL) 761 .Case("objective-c-header", IK_ObjC) 762 .Case("c++-header", IK_CXX) 763 .Case("objective-c++-header", IK_ObjCXX) 764 .Case("ast", IK_AST) 765 .Case("ir", IK_LLVM_IR) 766 .Default(IK_None); 767 if (DashX == IK_None) 768 Diags.Report(diag::err_drv_invalid_value) 769 << A->getAsString(Args) << A->getValue(); 770 } 771 772 // '-' is the default input if none is given. 773 std::vector<std::string> Inputs = Args.getAllArgValues(OPT_INPUT); 774 Opts.Inputs.clear(); 775 if (Inputs.empty()) 776 Inputs.push_back("-"); 777 for (unsigned i = 0, e = Inputs.size(); i != e; ++i) { 778 InputKind IK = DashX; 779 if (IK == IK_None) { 780 IK = FrontendOptions::getInputKindForExtension( 781 StringRef(Inputs[i]).rsplit('.').second); 782 // FIXME: Remove this hack. 783 if (i == 0) 784 DashX = IK; 785 } 786 Opts.Inputs.push_back(FrontendInputFile(Inputs[i], IK)); 787 } 788 789 return DashX; 790 } 791 792 std::string CompilerInvocation::GetResourcesPath(const char *Argv0, 793 void *MainAddr) { 794 llvm::sys::Path P = llvm::sys::Path::GetMainExecutable(Argv0, MainAddr); 795 796 if (!P.isEmpty()) { 797 P.eraseComponent(); // Remove /clang from foo/bin/clang 798 P.eraseComponent(); // Remove /bin from foo/bin 799 800 // Get foo/lib/clang/<version>/include 801 P.appendComponent("lib"); 802 P.appendComponent("clang"); 803 P.appendComponent(CLANG_VERSION_STRING); 804 } 805 806 return P.str(); 807 } 808 809 static void ParseHeaderSearchArgs(HeaderSearchOptions &Opts, ArgList &Args) { 810 using namespace options; 811 Opts.Sysroot = Args.getLastArgValue(OPT_isysroot, "/"); 812 Opts.Verbose = Args.hasArg(OPT_v); 813 Opts.UseBuiltinIncludes = !Args.hasArg(OPT_nobuiltininc); 814 Opts.UseStandardSystemIncludes = !Args.hasArg(OPT_nostdsysteminc); 815 Opts.UseStandardCXXIncludes = !Args.hasArg(OPT_nostdincxx); 816 if (const Arg *A = Args.getLastArg(OPT_stdlib_EQ)) 817 Opts.UseLibcxx = (strcmp(A->getValue(), "libc++") == 0); 818 Opts.ResourceDir = Args.getLastArgValue(OPT_resource_dir); 819 Opts.ModuleCachePath = Args.getLastArgValue(OPT_fmodules_cache_path); 820 Opts.DisableModuleHash = Args.hasArg(OPT_fdisable_module_hash); 821 822 for (arg_iterator it = Args.filtered_begin(OPT_fmodules_ignore_macro), 823 ie = Args.filtered_end(); it != ie; ++it) { 824 StringRef MacroDef = (*it)->getValue(); 825 Opts.ModulesIgnoreMacros.insert(MacroDef.split('=').first); 826 } 827 828 // Add -I..., -F..., and -index-header-map options in order. 829 bool IsIndexHeaderMap = false; 830 for (arg_iterator it = Args.filtered_begin(OPT_I, OPT_F, 831 OPT_index_header_map), 832 ie = Args.filtered_end(); it != ie; ++it) { 833 if ((*it)->getOption().matches(OPT_index_header_map)) { 834 // -index-header-map applies to the next -I or -F. 835 IsIndexHeaderMap = true; 836 continue; 837 } 838 839 frontend::IncludeDirGroup Group 840 = IsIndexHeaderMap? frontend::IndexHeaderMap : frontend::Angled; 841 842 Opts.AddPath((*it)->getValue(), Group, 843 /*IsFramework=*/ (*it)->getOption().matches(OPT_F), true); 844 IsIndexHeaderMap = false; 845 } 846 847 // Add -iprefix/-iwithprefix/-iwithprefixbefore options. 848 StringRef Prefix = ""; // FIXME: This isn't the correct default prefix. 849 for (arg_iterator it = Args.filtered_begin(OPT_iprefix, OPT_iwithprefix, 850 OPT_iwithprefixbefore), 851 ie = Args.filtered_end(); it != ie; ++it) { 852 const Arg *A = *it; 853 if (A->getOption().matches(OPT_iprefix)) 854 Prefix = A->getValue(); 855 else if (A->getOption().matches(OPT_iwithprefix)) 856 Opts.AddPath(Prefix.str() + A->getValue(), 857 frontend::After, false, true); 858 else 859 Opts.AddPath(Prefix.str() + A->getValue(), 860 frontend::Angled, false, true); 861 } 862 863 for (arg_iterator it = Args.filtered_begin(OPT_idirafter), 864 ie = Args.filtered_end(); it != ie; ++it) 865 Opts.AddPath((*it)->getValue(), frontend::After, false, true); 866 for (arg_iterator it = Args.filtered_begin(OPT_iquote), 867 ie = Args.filtered_end(); it != ie; ++it) 868 Opts.AddPath((*it)->getValue(), frontend::Quoted, false, true); 869 for (arg_iterator it = Args.filtered_begin(OPT_isystem, 870 OPT_iwithsysroot), ie = Args.filtered_end(); it != ie; ++it) 871 Opts.AddPath((*it)->getValue(), frontend::System, false, 872 !(*it)->getOption().matches(OPT_iwithsysroot)); 873 for (arg_iterator it = Args.filtered_begin(OPT_iframework), 874 ie = Args.filtered_end(); it != ie; ++it) 875 Opts.AddPath((*it)->getValue(), frontend::System, true, true); 876 877 // Add the paths for the various language specific isystem flags. 878 for (arg_iterator it = Args.filtered_begin(OPT_c_isystem), 879 ie = Args.filtered_end(); it != ie; ++it) 880 Opts.AddPath((*it)->getValue(), frontend::CSystem, false, true); 881 for (arg_iterator it = Args.filtered_begin(OPT_cxx_isystem), 882 ie = Args.filtered_end(); it != ie; ++it) 883 Opts.AddPath((*it)->getValue(), frontend::CXXSystem, false, true); 884 for (arg_iterator it = Args.filtered_begin(OPT_objc_isystem), 885 ie = Args.filtered_end(); it != ie; ++it) 886 Opts.AddPath((*it)->getValue(), frontend::ObjCSystem, false,true); 887 for (arg_iterator it = Args.filtered_begin(OPT_objcxx_isystem), 888 ie = Args.filtered_end(); it != ie; ++it) 889 Opts.AddPath((*it)->getValue(), frontend::ObjCXXSystem, false, true); 890 891 // Add the internal paths from a driver that detects standard include paths. 892 for (arg_iterator I = Args.filtered_begin(OPT_internal_isystem, 893 OPT_internal_externc_isystem), 894 E = Args.filtered_end(); 895 I != E; ++I) { 896 frontend::IncludeDirGroup Group = frontend::System; 897 if ((*I)->getOption().matches(OPT_internal_externc_isystem)) 898 Group = frontend::ExternCSystem; 899 Opts.AddPath((*I)->getValue(), Group, false, true); 900 } 901 902 // Add the path prefixes which are implicitly treated as being system headers. 903 for (arg_iterator I = Args.filtered_begin(OPT_isystem_prefix, 904 OPT_ino_system_prefix), 905 E = Args.filtered_end(); 906 I != E; ++I) 907 Opts.AddSystemHeaderPrefix((*I)->getValue(), 908 (*I)->getOption().matches(OPT_isystem_prefix)); 909 } 910 911 void CompilerInvocation::setLangDefaults(LangOptions &Opts, InputKind IK, 912 LangStandard::Kind LangStd) { 913 // Set some properties which depend solely on the input kind; it would be nice 914 // to move these to the language standard, and have the driver resolve the 915 // input kind + language standard. 916 if (IK == IK_Asm) { 917 Opts.AsmPreprocessor = 1; 918 } else if (IK == IK_ObjC || 919 IK == IK_ObjCXX || 920 IK == IK_PreprocessedObjC || 921 IK == IK_PreprocessedObjCXX) { 922 Opts.ObjC1 = Opts.ObjC2 = 1; 923 } 924 925 if (LangStd == LangStandard::lang_unspecified) { 926 // Based on the base language, pick one. 927 switch (IK) { 928 case IK_None: 929 case IK_AST: 930 case IK_LLVM_IR: 931 llvm_unreachable("Invalid input kind!"); 932 case IK_OpenCL: 933 LangStd = LangStandard::lang_opencl; 934 break; 935 case IK_CUDA: 936 LangStd = LangStandard::lang_cuda; 937 break; 938 case IK_Asm: 939 case IK_C: 940 case IK_PreprocessedC: 941 case IK_ObjC: 942 case IK_PreprocessedObjC: 943 LangStd = LangStandard::lang_gnu99; 944 break; 945 case IK_CXX: 946 case IK_PreprocessedCXX: 947 case IK_ObjCXX: 948 case IK_PreprocessedObjCXX: 949 LangStd = LangStandard::lang_gnucxx98; 950 break; 951 } 952 } 953 954 const LangStandard &Std = LangStandard::getLangStandardForKind(LangStd); 955 Opts.LineComment = Std.hasLineComments(); 956 Opts.C99 = Std.isC99(); 957 Opts.C11 = Std.isC11(); 958 Opts.CPlusPlus = Std.isCPlusPlus(); 959 Opts.CPlusPlus11 = Std.isCPlusPlus11(); 960 Opts.CPlusPlus1y = Std.isCPlusPlus1y(); 961 Opts.Digraphs = Std.hasDigraphs(); 962 Opts.GNUMode = Std.isGNUMode(); 963 Opts.GNUInline = !Std.isC99(); 964 Opts.HexFloats = Std.hasHexFloats(); 965 Opts.ImplicitInt = Std.hasImplicitInt(); 966 967 // Set OpenCL Version. 968 if (LangStd == LangStandard::lang_opencl) { 969 Opts.OpenCL = 1; 970 Opts.OpenCLVersion = 100; 971 } 972 else if (LangStd == LangStandard::lang_opencl11) { 973 Opts.OpenCL = 1; 974 Opts.OpenCLVersion = 110; 975 } 976 else if (LangStd == LangStandard::lang_opencl12) { 977 Opts.OpenCL = 1; 978 Opts.OpenCLVersion = 120; 979 } 980 981 // OpenCL has some additional defaults. 982 if (Opts.OpenCL) { 983 Opts.AltiVec = 0; 984 Opts.CXXOperatorNames = 1; 985 Opts.LaxVectorConversions = 0; 986 Opts.DefaultFPContract = 1; 987 Opts.NativeHalfType = 1; 988 } 989 990 if (LangStd == LangStandard::lang_cuda) 991 Opts.CUDA = 1; 992 993 // OpenCL and C++ both have bool, true, false keywords. 994 Opts.Bool = Opts.OpenCL || Opts.CPlusPlus; 995 996 // C++ has wchar_t keyword. 997 Opts.WChar = Opts.CPlusPlus; 998 999 Opts.GNUKeywords = Opts.GNUMode; 1000 Opts.CXXOperatorNames = Opts.CPlusPlus; 1001 1002 // Mimicing gcc's behavior, trigraphs are only enabled if -trigraphs 1003 // is specified, or -std is set to a conforming mode. 1004 Opts.Trigraphs = !Opts.GNUMode; 1005 1006 Opts.DollarIdents = !Opts.AsmPreprocessor; 1007 } 1008 1009 /// Attempt to parse a visibility value out of the given argument. 1010 static Visibility parseVisibility(Arg *arg, ArgList &args, 1011 DiagnosticsEngine &diags) { 1012 StringRef value = arg->getValue(); 1013 if (value == "default") { 1014 return DefaultVisibility; 1015 } else if (value == "hidden") { 1016 return HiddenVisibility; 1017 } else if (value == "protected") { 1018 // FIXME: diagnose if target does not support protected visibility 1019 return ProtectedVisibility; 1020 } 1021 1022 diags.Report(diag::err_drv_invalid_value) 1023 << arg->getAsString(args) << value; 1024 return DefaultVisibility; 1025 } 1026 1027 static void ParseLangArgs(LangOptions &Opts, ArgList &Args, InputKind IK, 1028 DiagnosticsEngine &Diags) { 1029 // FIXME: Cleanup per-file based stuff. 1030 LangStandard::Kind LangStd = LangStandard::lang_unspecified; 1031 if (const Arg *A = Args.getLastArg(OPT_std_EQ)) { 1032 LangStd = llvm::StringSwitch<LangStandard::Kind>(A->getValue()) 1033 #define LANGSTANDARD(id, name, desc, features) \ 1034 .Case(name, LangStandard::lang_##id) 1035 #include "clang/Frontend/LangStandards.def" 1036 .Default(LangStandard::lang_unspecified); 1037 if (LangStd == LangStandard::lang_unspecified) 1038 Diags.Report(diag::err_drv_invalid_value) 1039 << A->getAsString(Args) << A->getValue(); 1040 else { 1041 // Valid standard, check to make sure language and standard are compatable. 1042 const LangStandard &Std = LangStandard::getLangStandardForKind(LangStd); 1043 switch (IK) { 1044 case IK_C: 1045 case IK_ObjC: 1046 case IK_PreprocessedC: 1047 case IK_PreprocessedObjC: 1048 if (!(Std.isC89() || Std.isC99())) 1049 Diags.Report(diag::err_drv_argument_not_allowed_with) 1050 << A->getAsString(Args) << "C/ObjC"; 1051 break; 1052 case IK_CXX: 1053 case IK_ObjCXX: 1054 case IK_PreprocessedCXX: 1055 case IK_PreprocessedObjCXX: 1056 if (!Std.isCPlusPlus()) 1057 Diags.Report(diag::err_drv_argument_not_allowed_with) 1058 << A->getAsString(Args) << "C++/ObjC++"; 1059 break; 1060 case IK_OpenCL: 1061 if (!Std.isC99()) 1062 Diags.Report(diag::err_drv_argument_not_allowed_with) 1063 << A->getAsString(Args) << "OpenCL"; 1064 break; 1065 case IK_CUDA: 1066 if (!Std.isCPlusPlus()) 1067 Diags.Report(diag::err_drv_argument_not_allowed_with) 1068 << A->getAsString(Args) << "CUDA"; 1069 break; 1070 default: 1071 break; 1072 } 1073 } 1074 } 1075 1076 // -cl-std only applies for OpenCL language standards. 1077 // Override the -std option in this case. 1078 if (const Arg *A = Args.getLastArg(OPT_cl_std_EQ)) { 1079 LangStandard::Kind OpenCLLangStd 1080 = llvm::StringSwitch<LangStandard::Kind>(A->getValue()) 1081 .Case("CL", LangStandard::lang_opencl) 1082 .Case("CL1.1", LangStandard::lang_opencl11) 1083 .Case("CL1.2", LangStandard::lang_opencl12) 1084 .Default(LangStandard::lang_unspecified); 1085 1086 if (OpenCLLangStd == LangStandard::lang_unspecified) { 1087 Diags.Report(diag::err_drv_invalid_value) 1088 << A->getAsString(Args) << A->getValue(); 1089 } 1090 else 1091 LangStd = OpenCLLangStd; 1092 } 1093 1094 CompilerInvocation::setLangDefaults(Opts, IK, LangStd); 1095 1096 // We abuse '-f[no-]gnu-keywords' to force overriding all GNU-extension 1097 // keywords. This behavior is provided by GCC's poorly named '-fasm' flag, 1098 // while a subset (the non-C++ GNU keywords) is provided by GCC's 1099 // '-fgnu-keywords'. Clang conflates the two for simplicity under the single 1100 // name, as it doesn't seem a useful distinction. 1101 Opts.GNUKeywords = Args.hasFlag(OPT_fgnu_keywords, OPT_fno_gnu_keywords, 1102 Opts.GNUKeywords); 1103 1104 if (Args.hasArg(OPT_fno_operator_names)) 1105 Opts.CXXOperatorNames = 0; 1106 1107 if (Opts.ObjC1) { 1108 if (Arg *arg = Args.getLastArg(OPT_fobjc_runtime_EQ)) { 1109 StringRef value = arg->getValue(); 1110 if (Opts.ObjCRuntime.tryParse(value)) 1111 Diags.Report(diag::err_drv_unknown_objc_runtime) << value; 1112 } 1113 1114 if (Args.hasArg(OPT_fobjc_gc_only)) 1115 Opts.setGC(LangOptions::GCOnly); 1116 else if (Args.hasArg(OPT_fobjc_gc)) 1117 Opts.setGC(LangOptions::HybridGC); 1118 else if (Args.hasArg(OPT_fobjc_arc)) { 1119 Opts.ObjCAutoRefCount = 1; 1120 if (!Opts.ObjCRuntime.allowsARC()) 1121 Diags.Report(diag::err_arc_unsupported_on_runtime); 1122 1123 // Only set ObjCARCWeak if ARC is enabled. 1124 if (Args.hasArg(OPT_fobjc_runtime_has_weak)) 1125 Opts.ObjCARCWeak = 1; 1126 else 1127 Opts.ObjCARCWeak = Opts.ObjCRuntime.allowsWeak(); 1128 } 1129 1130 if (Args.hasArg(OPT_fno_objc_infer_related_result_type)) 1131 Opts.ObjCInferRelatedResultType = 0; 1132 } 1133 1134 if (Args.hasArg(OPT_fgnu89_inline)) 1135 Opts.GNUInline = 1; 1136 1137 if (Args.hasArg(OPT_fapple_kext)) { 1138 if (!Opts.CPlusPlus) 1139 Diags.Report(diag::warn_c_kext); 1140 else 1141 Opts.AppleKext = 1; 1142 } 1143 1144 if (Args.hasArg(OPT_print_ivar_layout)) 1145 Opts.ObjCGCBitmapPrint = 1; 1146 if (Args.hasArg(OPT_fno_constant_cfstrings)) 1147 Opts.NoConstantCFStrings = 1; 1148 1149 if (Args.hasArg(OPT_faltivec)) 1150 Opts.AltiVec = 1; 1151 1152 if (Args.hasArg(OPT_pthread)) 1153 Opts.POSIXThreads = 1; 1154 1155 if (Args.hasArg(OPT_fdelayed_template_parsing)) 1156 Opts.DelayedTemplateParsing = 1; 1157 1158 // The value-visibility mode defaults to "default". 1159 if (Arg *visOpt = Args.getLastArg(OPT_fvisibility)) { 1160 Opts.setValueVisibilityMode(parseVisibility(visOpt, Args, Diags)); 1161 } else { 1162 Opts.setValueVisibilityMode(DefaultVisibility); 1163 } 1164 1165 // The type-visibility mode defaults to the value-visibility mode. 1166 if (Arg *typeVisOpt = Args.getLastArg(OPT_ftype_visibility)) { 1167 Opts.setTypeVisibilityMode(parseVisibility(typeVisOpt, Args, Diags)); 1168 } else { 1169 Opts.setTypeVisibilityMode(Opts.getValueVisibilityMode()); 1170 } 1171 1172 if (Args.hasArg(OPT_fvisibility_inlines_hidden)) 1173 Opts.InlineVisibilityHidden = 1; 1174 1175 if (Args.hasArg(OPT_ftrapv)) { 1176 Opts.setSignedOverflowBehavior(LangOptions::SOB_Trapping); 1177 // Set the handler, if one is specified. 1178 Opts.OverflowHandler = 1179 Args.getLastArgValue(OPT_ftrapv_handler); 1180 } 1181 else if (Args.hasArg(OPT_fwrapv)) 1182 Opts.setSignedOverflowBehavior(LangOptions::SOB_Defined); 1183 1184 if (Args.hasArg(OPT_trigraphs)) 1185 Opts.Trigraphs = 1; 1186 1187 Opts.DollarIdents = Args.hasFlag(OPT_fdollars_in_identifiers, 1188 OPT_fno_dollars_in_identifiers, 1189 Opts.DollarIdents); 1190 Opts.PascalStrings = Args.hasArg(OPT_fpascal_strings); 1191 Opts.MicrosoftExt 1192 = Args.hasArg(OPT_fms_extensions) || Args.hasArg(OPT_fms_compatibility); 1193 Opts.MicrosoftMode = Args.hasArg(OPT_fms_compatibility); 1194 Opts.AsmBlocks = Args.hasArg(OPT_fasm_blocks) || Opts.MicrosoftExt; 1195 Opts.MSCVersion = Args.getLastArgIntValue(OPT_fmsc_version, 0, Diags); 1196 Opts.Borland = Args.hasArg(OPT_fborland_extensions); 1197 Opts.WritableStrings = Args.hasArg(OPT_fwritable_strings); 1198 Opts.ConstStrings = Args.hasFlag(OPT_fconst_strings, OPT_fno_const_strings, 1199 Opts.ConstStrings); 1200 if (Args.hasArg(OPT_fno_lax_vector_conversions)) 1201 Opts.LaxVectorConversions = 0; 1202 if (Args.hasArg(OPT_fno_threadsafe_statics)) 1203 Opts.ThreadsafeStatics = 0; 1204 Opts.Exceptions = Args.hasArg(OPT_fexceptions); 1205 Opts.ObjCExceptions = Args.hasArg(OPT_fobjc_exceptions); 1206 Opts.CXXExceptions = Args.hasArg(OPT_fcxx_exceptions); 1207 Opts.SjLjExceptions = Args.hasArg(OPT_fsjlj_exceptions); 1208 Opts.TraditionalCPP = Args.hasArg(OPT_traditional_cpp); 1209 1210 Opts.RTTI = !Args.hasArg(OPT_fno_rtti); 1211 Opts.Blocks = Args.hasArg(OPT_fblocks); 1212 Opts.BlocksRuntimeOptional = Args.hasArg(OPT_fblocks_runtime_optional); 1213 Opts.Modules = Args.hasArg(OPT_fmodules); 1214 Opts.CharIsSigned = !Args.hasArg(OPT_fno_signed_char); 1215 Opts.WChar = Opts.CPlusPlus && !Args.hasArg(OPT_fno_wchar); 1216 Opts.ShortWChar = Args.hasArg(OPT_fshort_wchar); 1217 Opts.ShortEnums = Args.hasArg(OPT_fshort_enums); 1218 Opts.Freestanding = Args.hasArg(OPT_ffreestanding); 1219 Opts.NoBuiltin = Args.hasArg(OPT_fno_builtin) || Opts.Freestanding; 1220 Opts.AssumeSaneOperatorNew = !Args.hasArg(OPT_fno_assume_sane_operator_new); 1221 Opts.HeinousExtensions = Args.hasArg(OPT_fheinous_gnu_extensions); 1222 Opts.AccessControl = !Args.hasArg(OPT_fno_access_control); 1223 Opts.ElideConstructors = !Args.hasArg(OPT_fno_elide_constructors); 1224 Opts.MathErrno = Args.hasArg(OPT_fmath_errno); 1225 Opts.InstantiationDepth = Args.getLastArgIntValue(OPT_ftemplate_depth, 512, 1226 Diags); 1227 Opts.ConstexprCallDepth = Args.getLastArgIntValue(OPT_fconstexpr_depth, 512, 1228 Diags); 1229 Opts.BracketDepth = Args.getLastArgIntValue(OPT_fbracket_depth, 256, Diags); 1230 Opts.DelayedTemplateParsing = Args.hasArg(OPT_fdelayed_template_parsing); 1231 Opts.NumLargeByValueCopy = Args.getLastArgIntValue(OPT_Wlarge_by_value_copy_EQ, 1232 0, Diags); 1233 Opts.MSBitfields = Args.hasArg(OPT_mms_bitfields); 1234 Opts.ObjCConstantStringClass = 1235 Args.getLastArgValue(OPT_fconstant_string_class); 1236 Opts.ObjCDefaultSynthProperties = 1237 Args.hasArg(OPT_fobjc_default_synthesize_properties); 1238 Opts.EncodeExtendedBlockSig = 1239 Args.hasArg(OPT_fencode_extended_block_signature); 1240 Opts.EmitAllDecls = Args.hasArg(OPT_femit_all_decls); 1241 Opts.PackStruct = Args.getLastArgIntValue(OPT_fpack_struct_EQ, 0, Diags); 1242 Opts.PICLevel = Args.getLastArgIntValue(OPT_pic_level, 0, Diags); 1243 Opts.PIELevel = Args.getLastArgIntValue(OPT_pie_level, 0, Diags); 1244 Opts.Static = Args.hasArg(OPT_static_define); 1245 Opts.DumpRecordLayoutsSimple = Args.hasArg(OPT_fdump_record_layouts_simple); 1246 Opts.DumpRecordLayouts = Opts.DumpRecordLayoutsSimple 1247 || Args.hasArg(OPT_fdump_record_layouts); 1248 Opts.DumpVTableLayouts = Args.hasArg(OPT_fdump_vtable_layouts); 1249 Opts.SpellChecking = !Args.hasArg(OPT_fno_spell_checking); 1250 Opts.NoBitFieldTypeAlign = Args.hasArg(OPT_fno_bitfield_type_align); 1251 Opts.SinglePrecisionConstants = Args.hasArg(OPT_cl_single_precision_constant); 1252 Opts.FastRelaxedMath = Args.hasArg(OPT_cl_fast_relaxed_math); 1253 Opts.MRTD = Args.hasArg(OPT_mrtd); 1254 Opts.HexagonQdsp6Compat = Args.hasArg(OPT_mqdsp6_compat); 1255 Opts.FakeAddressSpaceMap = Args.hasArg(OPT_ffake_address_space_map); 1256 Opts.ParseUnknownAnytype = Args.hasArg(OPT_funknown_anytype); 1257 Opts.DebuggerSupport = Args.hasArg(OPT_fdebugger_support); 1258 Opts.DebuggerCastResultToId = Args.hasArg(OPT_fdebugger_cast_result_to_id); 1259 Opts.DebuggerObjCLiteral = Args.hasArg(OPT_fdebugger_objc_literal); 1260 Opts.ApplePragmaPack = Args.hasArg(OPT_fapple_pragma_pack); 1261 Opts.CurrentModule = Args.getLastArgValue(OPT_fmodule_name); 1262 1263 // Check if -fopenmp is specified. 1264 Opts.OpenMP = Args.hasArg(OPT_fopenmp); 1265 1266 // Record whether the __DEPRECATED define was requested. 1267 Opts.Deprecated = Args.hasFlag(OPT_fdeprecated_macro, 1268 OPT_fno_deprecated_macro, 1269 Opts.Deprecated); 1270 1271 // FIXME: Eliminate this dependency. 1272 unsigned Opt = getOptimizationLevel(Args, IK, Diags), 1273 OptSize = getOptimizationLevelSize(Args, IK, Diags); 1274 Opts.Optimize = Opt != 0; 1275 Opts.OptimizeSize = OptSize != 0; 1276 1277 // This is the __NO_INLINE__ define, which just depends on things like the 1278 // optimization level and -fno-inline, not actually whether the backend has 1279 // inlining enabled. 1280 Opts.NoInlineDefine = !Opt || Args.hasArg(OPT_fno_inline); 1281 1282 Opts.FastMath = Args.hasArg(OPT_ffast_math); 1283 Opts.FiniteMathOnly = Args.hasArg(OPT_ffinite_math_only); 1284 1285 Opts.RetainCommentsFromSystemHeaders = 1286 Args.hasArg(OPT_fretain_comments_from_system_headers); 1287 1288 unsigned SSP = Args.getLastArgIntValue(OPT_stack_protector, 0, Diags); 1289 switch (SSP) { 1290 default: 1291 Diags.Report(diag::err_drv_invalid_value) 1292 << Args.getLastArg(OPT_stack_protector)->getAsString(Args) << SSP; 1293 break; 1294 case 0: Opts.setStackProtector(LangOptions::SSPOff); break; 1295 case 1: Opts.setStackProtector(LangOptions::SSPOn); break; 1296 case 2: Opts.setStackProtector(LangOptions::SSPReq); break; 1297 } 1298 1299 // Parse -fsanitize= arguments. 1300 std::vector<std::string> Sanitizers = Args.getAllArgValues(OPT_fsanitize_EQ); 1301 for (unsigned I = 0, N = Sanitizers.size(); I != N; ++I) { 1302 // Since the Opts.Sanitize* values are bitfields, it's a little tricky to 1303 // efficiently map string values to them. Perform the mapping indirectly: 1304 // convert strings to enumerated values, then switch over the enum to set 1305 // the right bitfield value. 1306 enum Sanitizer { 1307 #define SANITIZER(NAME, ID) \ 1308 ID, 1309 #include "clang/Basic/Sanitizers.def" 1310 Unknown 1311 }; 1312 switch (llvm::StringSwitch<unsigned>(Sanitizers[I]) 1313 #define SANITIZER(NAME, ID) \ 1314 .Case(NAME, ID) 1315 #include "clang/Basic/Sanitizers.def" 1316 .Default(Unknown)) { 1317 #define SANITIZER(NAME, ID) \ 1318 case ID: \ 1319 Opts.Sanitize.ID = true; \ 1320 break; 1321 #include "clang/Basic/Sanitizers.def" 1322 1323 case Unknown: 1324 Diags.Report(diag::err_drv_invalid_value) 1325 << "-fsanitize=" << Sanitizers[I]; 1326 break; 1327 } 1328 } 1329 } 1330 1331 static void ParsePreprocessorArgs(PreprocessorOptions &Opts, ArgList &Args, 1332 FileManager &FileMgr, 1333 DiagnosticsEngine &Diags) { 1334 using namespace options; 1335 Opts.ImplicitPCHInclude = Args.getLastArgValue(OPT_include_pch); 1336 Opts.ImplicitPTHInclude = Args.getLastArgValue(OPT_include_pth); 1337 if (const Arg *A = Args.getLastArg(OPT_token_cache)) 1338 Opts.TokenCache = A->getValue(); 1339 else 1340 Opts.TokenCache = Opts.ImplicitPTHInclude; 1341 Opts.UsePredefines = !Args.hasArg(OPT_undef); 1342 Opts.DetailedRecord = Args.hasArg(OPT_detailed_preprocessing_record); 1343 Opts.DisablePCHValidation = Args.hasArg(OPT_fno_validate_pch); 1344 1345 Opts.DumpDeserializedPCHDecls = Args.hasArg(OPT_dump_deserialized_pch_decls); 1346 for (arg_iterator it = Args.filtered_begin(OPT_error_on_deserialized_pch_decl), 1347 ie = Args.filtered_end(); it != ie; ++it) { 1348 const Arg *A = *it; 1349 Opts.DeserializedPCHDeclsToErrorOn.insert(A->getValue()); 1350 } 1351 1352 if (const Arg *A = Args.getLastArg(OPT_preamble_bytes_EQ)) { 1353 StringRef Value(A->getValue()); 1354 size_t Comma = Value.find(','); 1355 unsigned Bytes = 0; 1356 unsigned EndOfLine = 0; 1357 1358 if (Comma == StringRef::npos || 1359 Value.substr(0, Comma).getAsInteger(10, Bytes) || 1360 Value.substr(Comma + 1).getAsInteger(10, EndOfLine)) 1361 Diags.Report(diag::err_drv_preamble_format); 1362 else { 1363 Opts.PrecompiledPreambleBytes.first = Bytes; 1364 Opts.PrecompiledPreambleBytes.second = (EndOfLine != 0); 1365 } 1366 } 1367 1368 // Add macros from the command line. 1369 for (arg_iterator it = Args.filtered_begin(OPT_D, OPT_U), 1370 ie = Args.filtered_end(); it != ie; ++it) { 1371 if ((*it)->getOption().matches(OPT_D)) 1372 Opts.addMacroDef((*it)->getValue()); 1373 else 1374 Opts.addMacroUndef((*it)->getValue()); 1375 } 1376 1377 Opts.MacroIncludes = Args.getAllArgValues(OPT_imacros); 1378 1379 // Add the ordered list of -includes. 1380 for (arg_iterator it = Args.filtered_begin(OPT_include), 1381 ie = Args.filtered_end(); it != ie; ++it) { 1382 const Arg *A = *it; 1383 Opts.Includes.push_back(A->getValue()); 1384 } 1385 1386 for (arg_iterator it = Args.filtered_begin(OPT_chain_include), 1387 ie = Args.filtered_end(); it != ie; ++it) { 1388 const Arg *A = *it; 1389 Opts.ChainedIncludes.push_back(A->getValue()); 1390 } 1391 1392 // Include 'altivec.h' if -faltivec option present 1393 if (Args.hasArg(OPT_faltivec)) 1394 Opts.Includes.push_back("altivec.h"); 1395 1396 for (arg_iterator it = Args.filtered_begin(OPT_remap_file), 1397 ie = Args.filtered_end(); it != ie; ++it) { 1398 const Arg *A = *it; 1399 std::pair<StringRef,StringRef> Split = 1400 StringRef(A->getValue()).split(';'); 1401 1402 if (Split.second.empty()) { 1403 Diags.Report(diag::err_drv_invalid_remap_file) << A->getAsString(Args); 1404 continue; 1405 } 1406 1407 Opts.addRemappedFile(Split.first, Split.second); 1408 } 1409 1410 if (Arg *A = Args.getLastArg(OPT_fobjc_arc_cxxlib_EQ)) { 1411 StringRef Name = A->getValue(); 1412 unsigned Library = llvm::StringSwitch<unsigned>(Name) 1413 .Case("libc++", ARCXX_libcxx) 1414 .Case("libstdc++", ARCXX_libstdcxx) 1415 .Case("none", ARCXX_nolib) 1416 .Default(~0U); 1417 if (Library == ~0U) 1418 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Name; 1419 else 1420 Opts.ObjCXXARCStandardLibrary = (ObjCXXARCStandardLibraryKind)Library; 1421 } 1422 } 1423 1424 static void ParsePreprocessorOutputArgs(PreprocessorOutputOptions &Opts, 1425 ArgList &Args, 1426 frontend::ActionKind Action) { 1427 using namespace options; 1428 1429 switch (Action) { 1430 case frontend::ASTDeclList: 1431 case frontend::ASTDump: 1432 case frontend::ASTDumpXML: 1433 case frontend::ASTPrint: 1434 case frontend::ASTView: 1435 case frontend::EmitAssembly: 1436 case frontend::EmitBC: 1437 case frontend::EmitHTML: 1438 case frontend::EmitLLVM: 1439 case frontend::EmitLLVMOnly: 1440 case frontend::EmitCodeGenOnly: 1441 case frontend::EmitObj: 1442 case frontend::FixIt: 1443 case frontend::GenerateModule: 1444 case frontend::GeneratePCH: 1445 case frontend::GeneratePTH: 1446 case frontend::ParseSyntaxOnly: 1447 case frontend::PluginAction: 1448 case frontend::PrintDeclContext: 1449 case frontend::RewriteObjC: 1450 case frontend::RewriteTest: 1451 case frontend::RunAnalysis: 1452 case frontend::MigrateSource: 1453 Opts.ShowCPP = 0; 1454 break; 1455 1456 case frontend::DumpRawTokens: 1457 case frontend::DumpTokens: 1458 case frontend::InitOnly: 1459 case frontend::PrintPreamble: 1460 case frontend::PrintPreprocessedInput: 1461 case frontend::RewriteMacros: 1462 case frontend::RunPreprocessorOnly: 1463 Opts.ShowCPP = !Args.hasArg(OPT_dM); 1464 break; 1465 } 1466 1467 Opts.ShowComments = Args.hasArg(OPT_C); 1468 Opts.ShowLineMarkers = !Args.hasArg(OPT_P); 1469 Opts.ShowMacroComments = Args.hasArg(OPT_CC); 1470 Opts.ShowMacros = Args.hasArg(OPT_dM) || Args.hasArg(OPT_dD); 1471 Opts.RewriteIncludes = Args.hasArg(OPT_frewrite_includes); 1472 } 1473 1474 static void ParseTargetArgs(TargetOptions &Opts, ArgList &Args, 1475 DiagnosticsEngine &Diags) { 1476 using namespace options; 1477 Opts.ABI = Args.getLastArgValue(OPT_target_abi); 1478 Opts.CXXABI = Args.getLastArgValue(OPT_cxx_abi); 1479 Opts.CPU = Args.getLastArgValue(OPT_target_cpu); 1480 Opts.FeaturesAsWritten = Args.getAllArgValues(OPT_target_feature); 1481 Opts.LinkerVersion = Args.getLastArgValue(OPT_target_linker_version); 1482 Opts.Triple = llvm::Triple::normalize(Args.getLastArgValue(OPT_triple)); 1483 1484 // Use the default target triple if unspecified. 1485 if (Opts.Triple.empty()) 1486 Opts.Triple = llvm::sys::getDefaultTargetTriple(); 1487 1488 // Check if Opts.ABI conflicts with the environment of triple on ARM. 1489 llvm::Triple T(Opts.Triple); 1490 if (T.getArch() == llvm::Triple::arm && !Opts.ABI.empty() && 1491 !T.getEnvironmentName().empty()) { 1492 llvm::Triple::EnvironmentType env = T.getEnvironment(); 1493 // Env and ABI (Triple::EnvironmentType and ARMABIInfo::ABIKind) are not 1494 // 1-to-1 mapping. Later on, Env will be overrided by ABI option when 1495 // computing ARMABIInfo. 1496 bool isOpsEABI = StringRef(Opts.ABI).startswith("aapcs"); 1497 bool isEnvEABI = (env == llvm::Triple::GNUEABI || env == llvm::Triple::EABI 1498 || env == llvm::Triple::Android); 1499 if (isEnvEABI != isOpsEABI) 1500 Diags.Report(diag::warn_target_override_abi) << T.getEnvironmentName(); 1501 } 1502 } 1503 1504 // 1505 1506 bool CompilerInvocation::CreateFromArgs(CompilerInvocation &Res, 1507 const char *const *ArgBegin, 1508 const char *const *ArgEnd, 1509 DiagnosticsEngine &Diags) { 1510 bool Success = true; 1511 1512 // Parse the arguments. 1513 OwningPtr<OptTable> Opts(createDriverOptTable()); 1514 unsigned MissingArgIndex, MissingArgCount; 1515 OwningPtr<InputArgList> Args( 1516 Opts->ParseArgs(ArgBegin, ArgEnd,MissingArgIndex, MissingArgCount)); 1517 1518 // Check for missing argument error. 1519 if (MissingArgCount) { 1520 Diags.Report(diag::err_drv_missing_argument) 1521 << Args->getArgString(MissingArgIndex) << MissingArgCount; 1522 Success = false; 1523 } 1524 1525 // Issue errors on unknown arguments. 1526 for (arg_iterator it = Args->filtered_begin(OPT_UNKNOWN), 1527 ie = Args->filtered_end(); it != ie; ++it) { 1528 Diags.Report(diag::err_drv_unknown_argument) << (*it)->getAsString(*Args); 1529 Success = false; 1530 } 1531 1532 // Issue errors on arguments that are not valid for CC1. 1533 for (ArgList::iterator I = Args->begin(), E = Args->end(); 1534 I != E; ++I) { 1535 if (!(*I)->getOption().hasFlag(options::CC1Option)) { 1536 Diags.Report(diag::err_drv_unknown_argument) << (*I)->getAsString(*Args); 1537 Success = false; 1538 } 1539 } 1540 1541 Success = ParseAnalyzerArgs(*Res.getAnalyzerOpts(), *Args, Diags) && Success; 1542 Success = ParseMigratorArgs(Res.getMigratorOpts(), *Args) && Success; 1543 ParseDependencyOutputArgs(Res.getDependencyOutputOpts(), *Args); 1544 Success = ParseDiagnosticArgs(Res.getDiagnosticOpts(), *Args, &Diags) 1545 && Success; 1546 ParseCommentArgs(Res.getLangOpts()->CommentOpts, *Args); 1547 ParseFileSystemArgs(Res.getFileSystemOpts(), *Args); 1548 // FIXME: We shouldn't have to pass the DashX option around here 1549 InputKind DashX = ParseFrontendArgs(Res.getFrontendOpts(), *Args, Diags); 1550 Success = ParseCodeGenArgs(Res.getCodeGenOpts(), *Args, DashX, Diags) 1551 && Success; 1552 ParseHeaderSearchArgs(Res.getHeaderSearchOpts(), *Args); 1553 if (DashX != IK_AST && DashX != IK_LLVM_IR) { 1554 ParseLangArgs(*Res.getLangOpts(), *Args, DashX, Diags); 1555 if (Res.getFrontendOpts().ProgramAction == frontend::RewriteObjC) 1556 Res.getLangOpts()->ObjCExceptions = 1; 1557 } 1558 // FIXME: ParsePreprocessorArgs uses the FileManager to read the contents of 1559 // PCH file and find the original header name. Remove the need to do that in 1560 // ParsePreprocessorArgs and remove the FileManager 1561 // parameters from the function and the "FileManager.h" #include. 1562 FileManager FileMgr(Res.getFileSystemOpts()); 1563 ParsePreprocessorArgs(Res.getPreprocessorOpts(), *Args, FileMgr, Diags); 1564 ParsePreprocessorOutputArgs(Res.getPreprocessorOutputOpts(), *Args, 1565 Res.getFrontendOpts().ProgramAction); 1566 ParseTargetArgs(Res.getTargetOpts(), *Args, Diags); 1567 1568 return Success; 1569 } 1570 1571 namespace { 1572 1573 class ModuleSignature { 1574 SmallVector<uint64_t, 16> Data; 1575 unsigned CurBit; 1576 uint64_t CurValue; 1577 1578 public: 1579 ModuleSignature() : CurBit(0), CurValue(0) { } 1580 1581 void add(uint64_t Value, unsigned Bits); 1582 void add(StringRef Value); 1583 void flush(); 1584 1585 llvm::APInt getAsInteger() const; 1586 }; 1587 } 1588 1589 void ModuleSignature::add(uint64_t Value, unsigned int NumBits) { 1590 CurValue |= Value << CurBit; 1591 if (CurBit + NumBits < 64) { 1592 CurBit += NumBits; 1593 return; 1594 } 1595 1596 // Add the current word. 1597 Data.push_back(CurValue); 1598 1599 if (CurBit) 1600 CurValue = Value >> (64-CurBit); 1601 else 1602 CurValue = 0; 1603 CurBit = (CurBit+NumBits) & 63; 1604 } 1605 1606 void ModuleSignature::flush() { 1607 if (CurBit == 0) 1608 return; 1609 1610 Data.push_back(CurValue); 1611 CurBit = 0; 1612 CurValue = 0; 1613 } 1614 1615 void ModuleSignature::add(StringRef Value) { 1616 for (StringRef::iterator I = Value.begin(), IEnd = Value.end(); I != IEnd;++I) 1617 add(*I, 8); 1618 } 1619 1620 llvm::APInt ModuleSignature::getAsInteger() const { 1621 return llvm::APInt(Data.size() * 64, Data); 1622 } 1623 1624 std::string CompilerInvocation::getModuleHash() const { 1625 using llvm::hash_code; 1626 using llvm::hash_value; 1627 using llvm::hash_combine; 1628 1629 // Start the signature with the compiler version. 1630 // FIXME: We'd rather use something more cryptographically sound than 1631 // CityHash, but this will do for now. 1632 hash_code code = hash_value(getClangFullRepositoryVersion()); 1633 1634 // Extend the signature with the language options 1635 #define LANGOPT(Name, Bits, Default, Description) \ 1636 code = hash_combine(code, LangOpts->Name); 1637 #define ENUM_LANGOPT(Name, Type, Bits, Default, Description) \ 1638 code = hash_combine(code, static_cast<unsigned>(LangOpts->get##Name())); 1639 #define BENIGN_LANGOPT(Name, Bits, Default, Description) 1640 #define BENIGN_ENUM_LANGOPT(Name, Type, Bits, Default, Description) 1641 #include "clang/Basic/LangOptions.def" 1642 1643 // Extend the signature with the target options. 1644 code = hash_combine(code, TargetOpts->Triple, TargetOpts->CPU, 1645 TargetOpts->ABI, TargetOpts->CXXABI, 1646 TargetOpts->LinkerVersion); 1647 for (unsigned i = 0, n = TargetOpts->FeaturesAsWritten.size(); i != n; ++i) 1648 code = hash_combine(code, TargetOpts->FeaturesAsWritten[i]); 1649 1650 // Extend the signature with preprocessor options. 1651 const PreprocessorOptions &ppOpts = getPreprocessorOpts(); 1652 const HeaderSearchOptions &hsOpts = getHeaderSearchOpts(); 1653 code = hash_combine(code, ppOpts.UsePredefines, ppOpts.DetailedRecord); 1654 1655 std::vector<StringRef> MacroDefs; 1656 for (std::vector<std::pair<std::string, bool/*isUndef*/> >::const_iterator 1657 I = getPreprocessorOpts().Macros.begin(), 1658 IEnd = getPreprocessorOpts().Macros.end(); 1659 I != IEnd; ++I) { 1660 // If we're supposed to ignore this macro for the purposes of modules, 1661 // don't put it into the hash. 1662 if (!hsOpts.ModulesIgnoreMacros.empty()) { 1663 // Check whether we're ignoring this macro. 1664 StringRef MacroDef = I->first; 1665 if (hsOpts.ModulesIgnoreMacros.count(MacroDef.split('=').first)) 1666 continue; 1667 } 1668 1669 code = hash_combine(code, I->first, I->second); 1670 } 1671 1672 // Extend the signature with the sysroot. 1673 code = hash_combine(code, hsOpts.Sysroot, hsOpts.UseBuiltinIncludes, 1674 hsOpts.UseStandardSystemIncludes, 1675 hsOpts.UseStandardCXXIncludes, 1676 hsOpts.UseLibcxx); 1677 1678 return llvm::APInt(64, code).toString(36, /*Signed=*/false); 1679 } 1680