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.MaxNodes = Args.getLastArgIntValue(OPT_analyzer_max_nodes, 150000,Diags); 222 Opts.maxBlockVisitOnPath = Args.getLastArgIntValue(OPT_analyzer_max_loop, 4, Diags); 223 Opts.PrintStats = Args.hasArg(OPT_analyzer_stats); 224 Opts.InlineMaxStackDepth = 225 Args.getLastArgIntValue(OPT_analyzer_inline_max_stack_depth, 226 Opts.InlineMaxStackDepth, Diags); 227 Opts.InlineMaxFunctionSize = 228 Args.getLastArgIntValue(OPT_analyzer_inline_max_function_size, 229 Opts.InlineMaxFunctionSize, Diags); 230 231 Opts.CheckersControlList.clear(); 232 for (arg_iterator it = Args.filtered_begin(OPT_analyzer_checker, 233 OPT_analyzer_disable_checker), 234 ie = Args.filtered_end(); it != ie; ++it) { 235 const Arg *A = *it; 236 A->claim(); 237 bool enable = (A->getOption().getID() == OPT_analyzer_checker); 238 // We can have a list of comma separated checker names, e.g: 239 // '-analyzer-checker=cocoa,unix' 240 StringRef checkerList = A->getValue(); 241 SmallVector<StringRef, 4> checkers; 242 checkerList.split(checkers, ","); 243 for (unsigned i = 0, e = checkers.size(); i != e; ++i) 244 Opts.CheckersControlList.push_back(std::make_pair(checkers[i], enable)); 245 } 246 247 // Go through the analyzer configuration options. 248 for (arg_iterator it = Args.filtered_begin(OPT_analyzer_config), 249 ie = Args.filtered_end(); it != ie; ++it) { 250 const Arg *A = *it; 251 A->claim(); 252 // We can have a list of comma separated config names, e.g: 253 // '-analyzer-config key1=val1,key2=val2' 254 StringRef configList = A->getValue(); 255 SmallVector<StringRef, 4> configVals; 256 configList.split(configVals, ","); 257 for (unsigned i = 0, e = configVals.size(); i != e; ++i) { 258 StringRef key, val; 259 llvm::tie(key, val) = configVals[i].split("="); 260 if (val.empty()) { 261 Diags.Report(SourceLocation(), 262 diag::err_analyzer_config_no_value) << configVals[i]; 263 Success = false; 264 break; 265 } 266 if (val.find('=') != StringRef::npos) { 267 Diags.Report(SourceLocation(), 268 diag::err_analyzer_config_multiple_values) 269 << configVals[i]; 270 Success = false; 271 break; 272 } 273 Opts.Config[key] = val; 274 } 275 } 276 277 return Success; 278 } 279 280 static bool ParseMigratorArgs(MigratorOptions &Opts, ArgList &Args) { 281 Opts.NoNSAllocReallocError = Args.hasArg(OPT_migrator_no_nsalloc_error); 282 Opts.NoFinalizeRemoval = Args.hasArg(OPT_migrator_no_finalize_removal); 283 return true; 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.SSPBufferSize = 396 Args.getLastArgIntValue(OPT_stack_protector_buffer_size, 8, Diags); 397 Opts.StackRealignment = Args.hasArg(OPT_mstackrealign); 398 if (Arg *A = Args.getLastArg(OPT_mstack_alignment)) { 399 StringRef Val = A->getValue(); 400 unsigned StackAlignment = Opts.StackAlignment; 401 Val.getAsInteger(10, StackAlignment); 402 Opts.StackAlignment = StackAlignment; 403 } 404 405 if (Arg *A = Args.getLastArg(OPT_fobjc_dispatch_method_EQ)) { 406 StringRef Name = A->getValue(); 407 unsigned Method = llvm::StringSwitch<unsigned>(Name) 408 .Case("legacy", CodeGenOptions::Legacy) 409 .Case("non-legacy", CodeGenOptions::NonLegacy) 410 .Case("mixed", CodeGenOptions::Mixed) 411 .Default(~0U); 412 if (Method == ~0U) { 413 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Name; 414 Success = false; 415 } else { 416 Opts.setObjCDispatchMethod( 417 static_cast<CodeGenOptions::ObjCDispatchMethodKind>(Method)); 418 } 419 } 420 421 if (Arg *A = Args.getLastArg(OPT_ftlsmodel_EQ)) { 422 StringRef Name = A->getValue(); 423 unsigned Model = llvm::StringSwitch<unsigned>(Name) 424 .Case("global-dynamic", CodeGenOptions::GeneralDynamicTLSModel) 425 .Case("local-dynamic", CodeGenOptions::LocalDynamicTLSModel) 426 .Case("initial-exec", CodeGenOptions::InitialExecTLSModel) 427 .Case("local-exec", CodeGenOptions::LocalExecTLSModel) 428 .Default(~0U); 429 if (Model == ~0U) { 430 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Name; 431 Success = false; 432 } else { 433 Opts.setDefaultTLSModel(static_cast<CodeGenOptions::TLSModel>(Model)); 434 } 435 } 436 437 if (Arg *A = Args.getLastArg(OPT_ffp_contract)) { 438 StringRef Val = A->getValue(); 439 if (Val == "fast") 440 Opts.setFPContractMode(CodeGenOptions::FPC_Fast); 441 else if (Val == "on") 442 Opts.setFPContractMode(CodeGenOptions::FPC_On); 443 else if (Val == "off") 444 Opts.setFPContractMode(CodeGenOptions::FPC_Off); 445 else 446 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Val; 447 } 448 449 return Success; 450 } 451 452 static void ParseDependencyOutputArgs(DependencyOutputOptions &Opts, 453 ArgList &Args) { 454 using namespace options; 455 Opts.OutputFile = Args.getLastArgValue(OPT_dependency_file); 456 Opts.Targets = Args.getAllArgValues(OPT_MT); 457 Opts.IncludeSystemHeaders = Args.hasArg(OPT_sys_header_deps); 458 Opts.UsePhonyTargets = Args.hasArg(OPT_MP); 459 Opts.ShowHeaderIncludes = Args.hasArg(OPT_H); 460 Opts.HeaderIncludeOutputFile = Args.getLastArgValue(OPT_header_include_file); 461 Opts.AddMissingHeaderDeps = Args.hasArg(OPT_MG); 462 Opts.DOTOutputFile = Args.getLastArgValue(OPT_dependency_dot); 463 } 464 465 bool clang::ParseDiagnosticArgs(DiagnosticOptions &Opts, ArgList &Args, 466 DiagnosticsEngine *Diags) { 467 using namespace options; 468 bool Success = true; 469 470 Opts.DiagnosticLogFile = Args.getLastArgValue(OPT_diagnostic_log_file); 471 Opts.DiagnosticSerializationFile = 472 Args.getLastArgValue(OPT_diagnostic_serialized_file); 473 Opts.IgnoreWarnings = Args.hasArg(OPT_w); 474 Opts.NoRewriteMacros = Args.hasArg(OPT_Wno_rewrite_macros); 475 Opts.Pedantic = Args.hasArg(OPT_pedantic); 476 Opts.PedanticErrors = Args.hasArg(OPT_pedantic_errors); 477 Opts.ShowCarets = !Args.hasArg(OPT_fno_caret_diagnostics); 478 Opts.ShowColors = Args.hasArg(OPT_fcolor_diagnostics); 479 Opts.ShowColumn = Args.hasFlag(OPT_fshow_column, 480 OPT_fno_show_column, 481 /*Default=*/true); 482 Opts.ShowFixits = !Args.hasArg(OPT_fno_diagnostics_fixit_info); 483 Opts.ShowLocation = !Args.hasArg(OPT_fno_show_source_location); 484 Opts.ShowOptionNames = Args.hasArg(OPT_fdiagnostics_show_option); 485 486 // Default behavior is to not to show note include stacks. 487 Opts.ShowNoteIncludeStack = false; 488 if (Arg *A = Args.getLastArg(OPT_fdiagnostics_show_note_include_stack, 489 OPT_fno_diagnostics_show_note_include_stack)) 490 if (A->getOption().matches(OPT_fdiagnostics_show_note_include_stack)) 491 Opts.ShowNoteIncludeStack = true; 492 493 StringRef ShowOverloads = 494 Args.getLastArgValue(OPT_fshow_overloads_EQ, "all"); 495 if (ShowOverloads == "best") 496 Opts.setShowOverloads(Ovl_Best); 497 else if (ShowOverloads == "all") 498 Opts.setShowOverloads(Ovl_All); 499 else { 500 Success = false; 501 if (Diags) 502 Diags->Report(diag::err_drv_invalid_value) 503 << Args.getLastArg(OPT_fshow_overloads_EQ)->getAsString(Args) 504 << ShowOverloads; 505 } 506 507 StringRef ShowCategory = 508 Args.getLastArgValue(OPT_fdiagnostics_show_category, "none"); 509 if (ShowCategory == "none") 510 Opts.ShowCategories = 0; 511 else if (ShowCategory == "id") 512 Opts.ShowCategories = 1; 513 else if (ShowCategory == "name") 514 Opts.ShowCategories = 2; 515 else { 516 Success = false; 517 if (Diags) 518 Diags->Report(diag::err_drv_invalid_value) 519 << Args.getLastArg(OPT_fdiagnostics_show_category)->getAsString(Args) 520 << ShowCategory; 521 } 522 523 StringRef Format = 524 Args.getLastArgValue(OPT_fdiagnostics_format, "clang"); 525 if (Format == "clang") 526 Opts.setFormat(DiagnosticOptions::Clang); 527 else if (Format == "msvc") 528 Opts.setFormat(DiagnosticOptions::Msvc); 529 else if (Format == "vi") 530 Opts.setFormat(DiagnosticOptions::Vi); 531 else { 532 Success = false; 533 if (Diags) 534 Diags->Report(diag::err_drv_invalid_value) 535 << Args.getLastArg(OPT_fdiagnostics_format)->getAsString(Args) 536 << Format; 537 } 538 539 Opts.ShowSourceRanges = Args.hasArg(OPT_fdiagnostics_print_source_range_info); 540 Opts.ShowParseableFixits = Args.hasArg(OPT_fdiagnostics_parseable_fixits); 541 Opts.ShowPresumedLoc = !Args.hasArg(OPT_fno_diagnostics_use_presumed_location); 542 Opts.VerifyDiagnostics = Args.hasArg(OPT_verify); 543 Opts.ElideType = !Args.hasArg(OPT_fno_elide_type); 544 Opts.ShowTemplateTree = Args.hasArg(OPT_fdiagnostics_show_template_tree); 545 Opts.ErrorLimit = Args.getLastArgIntValue(OPT_ferror_limit, 0, Diags); 546 Opts.MacroBacktraceLimit 547 = Args.getLastArgIntValue(OPT_fmacro_backtrace_limit, 548 DiagnosticOptions::DefaultMacroBacktraceLimit, Diags); 549 Opts.TemplateBacktraceLimit 550 = Args.getLastArgIntValue(OPT_ftemplate_backtrace_limit, 551 DiagnosticOptions::DefaultTemplateBacktraceLimit, 552 Diags); 553 Opts.ConstexprBacktraceLimit 554 = Args.getLastArgIntValue(OPT_fconstexpr_backtrace_limit, 555 DiagnosticOptions::DefaultConstexprBacktraceLimit, 556 Diags); 557 Opts.TabStop = Args.getLastArgIntValue(OPT_ftabstop, 558 DiagnosticOptions::DefaultTabStop, Diags); 559 if (Opts.TabStop == 0 || Opts.TabStop > DiagnosticOptions::MaxTabStop) { 560 Opts.TabStop = DiagnosticOptions::DefaultTabStop; 561 if (Diags) 562 Diags->Report(diag::warn_ignoring_ftabstop_value) 563 << Opts.TabStop << DiagnosticOptions::DefaultTabStop; 564 } 565 Opts.MessageLength = Args.getLastArgIntValue(OPT_fmessage_length, 0, Diags); 566 addWarningArgs(Args, Opts.Warnings); 567 568 return Success; 569 } 570 571 static void ParseFileSystemArgs(FileSystemOptions &Opts, ArgList &Args) { 572 Opts.WorkingDir = Args.getLastArgValue(OPT_working_directory); 573 } 574 575 static InputKind ParseFrontendArgs(FrontendOptions &Opts, ArgList &Args, 576 DiagnosticsEngine &Diags) { 577 using namespace options; 578 Opts.ProgramAction = frontend::ParseSyntaxOnly; 579 if (const Arg *A = Args.getLastArg(OPT_Action_Group)) { 580 switch (A->getOption().getID()) { 581 default: 582 llvm_unreachable("Invalid option in group!"); 583 case OPT_ast_list: 584 Opts.ProgramAction = frontend::ASTDeclList; break; 585 case OPT_ast_dump: 586 Opts.ProgramAction = frontend::ASTDump; break; 587 case OPT_ast_dump_xml: 588 Opts.ProgramAction = frontend::ASTDumpXML; break; 589 case OPT_ast_print: 590 Opts.ProgramAction = frontend::ASTPrint; break; 591 case OPT_ast_view: 592 Opts.ProgramAction = frontend::ASTView; break; 593 case OPT_dump_raw_tokens: 594 Opts.ProgramAction = frontend::DumpRawTokens; break; 595 case OPT_dump_tokens: 596 Opts.ProgramAction = frontend::DumpTokens; break; 597 case OPT_S: 598 Opts.ProgramAction = frontend::EmitAssembly; break; 599 case OPT_emit_llvm_bc: 600 Opts.ProgramAction = frontend::EmitBC; break; 601 case OPT_emit_html: 602 Opts.ProgramAction = frontend::EmitHTML; break; 603 case OPT_emit_llvm: 604 Opts.ProgramAction = frontend::EmitLLVM; break; 605 case OPT_emit_llvm_only: 606 Opts.ProgramAction = frontend::EmitLLVMOnly; break; 607 case OPT_emit_codegen_only: 608 Opts.ProgramAction = frontend::EmitCodeGenOnly; break; 609 case OPT_emit_obj: 610 Opts.ProgramAction = frontend::EmitObj; break; 611 case OPT_fixit_EQ: 612 Opts.FixItSuffix = A->getValue(); 613 // fall-through! 614 case OPT_fixit: 615 Opts.ProgramAction = frontend::FixIt; break; 616 case OPT_emit_module: 617 Opts.ProgramAction = frontend::GenerateModule; break; 618 case OPT_emit_pch: 619 Opts.ProgramAction = frontend::GeneratePCH; break; 620 case OPT_emit_pth: 621 Opts.ProgramAction = frontend::GeneratePTH; break; 622 case OPT_init_only: 623 Opts.ProgramAction = frontend::InitOnly; break; 624 case OPT_fsyntax_only: 625 Opts.ProgramAction = frontend::ParseSyntaxOnly; break; 626 case OPT_print_decl_contexts: 627 Opts.ProgramAction = frontend::PrintDeclContext; break; 628 case OPT_print_preamble: 629 Opts.ProgramAction = frontend::PrintPreamble; break; 630 case OPT_E: 631 Opts.ProgramAction = frontend::PrintPreprocessedInput; break; 632 case OPT_rewrite_macros: 633 Opts.ProgramAction = frontend::RewriteMacros; break; 634 case OPT_rewrite_objc: 635 Opts.ProgramAction = frontend::RewriteObjC; break; 636 case OPT_rewrite_test: 637 Opts.ProgramAction = frontend::RewriteTest; break; 638 case OPT_analyze: 639 Opts.ProgramAction = frontend::RunAnalysis; break; 640 case OPT_migrate: 641 Opts.ProgramAction = frontend::MigrateSource; break; 642 case OPT_Eonly: 643 Opts.ProgramAction = frontend::RunPreprocessorOnly; break; 644 } 645 } 646 647 if (const Arg* A = Args.getLastArg(OPT_plugin)) { 648 Opts.Plugins.push_back(A->getValue(0)); 649 Opts.ProgramAction = frontend::PluginAction; 650 Opts.ActionName = A->getValue(); 651 652 for (arg_iterator it = Args.filtered_begin(OPT_plugin_arg), 653 end = Args.filtered_end(); it != end; ++it) { 654 if ((*it)->getValue(0) == Opts.ActionName) 655 Opts.PluginArgs.push_back((*it)->getValue(1)); 656 } 657 } 658 659 Opts.AddPluginActions = Args.getAllArgValues(OPT_add_plugin); 660 Opts.AddPluginArgs.resize(Opts.AddPluginActions.size()); 661 for (int i = 0, e = Opts.AddPluginActions.size(); i != e; ++i) { 662 for (arg_iterator it = Args.filtered_begin(OPT_plugin_arg), 663 end = Args.filtered_end(); it != end; ++it) { 664 if ((*it)->getValue(0) == Opts.AddPluginActions[i]) 665 Opts.AddPluginArgs[i].push_back((*it)->getValue(1)); 666 } 667 } 668 669 if (const Arg *A = Args.getLastArg(OPT_code_completion_at)) { 670 Opts.CodeCompletionAt = 671 ParsedSourceLocation::FromString(A->getValue()); 672 if (Opts.CodeCompletionAt.FileName.empty()) 673 Diags.Report(diag::err_drv_invalid_value) 674 << A->getAsString(Args) << A->getValue(); 675 } 676 Opts.DisableFree = Args.hasArg(OPT_disable_free); 677 678 Opts.OutputFile = Args.getLastArgValue(OPT_o); 679 Opts.Plugins = Args.getAllArgValues(OPT_load); 680 Opts.RelocatablePCH = Args.hasArg(OPT_relocatable_pch); 681 Opts.ShowHelp = Args.hasArg(OPT_help); 682 Opts.ShowStats = Args.hasArg(OPT_print_stats); 683 Opts.ShowTimers = Args.hasArg(OPT_ftime_report); 684 Opts.ShowVersion = Args.hasArg(OPT_version); 685 Opts.ASTMergeFiles = Args.getAllArgValues(OPT_ast_merge); 686 Opts.LLVMArgs = Args.getAllArgValues(OPT_mllvm); 687 Opts.FixWhatYouCan = Args.hasArg(OPT_fix_what_you_can); 688 Opts.FixOnlyWarnings = Args.hasArg(OPT_fix_only_warnings); 689 Opts.FixAndRecompile = Args.hasArg(OPT_fixit_recompile); 690 Opts.FixToTemporaries = Args.hasArg(OPT_fixit_to_temp); 691 Opts.ASTDumpFilter = Args.getLastArgValue(OPT_ast_dump_filter); 692 Opts.GenerateModuleIndex = Args.hasArg(OPT_generate_module_index); 693 694 Opts.CodeCompleteOpts.IncludeMacros 695 = Args.hasArg(OPT_code_completion_macros); 696 Opts.CodeCompleteOpts.IncludeCodePatterns 697 = Args.hasArg(OPT_code_completion_patterns); 698 Opts.CodeCompleteOpts.IncludeGlobals 699 = !Args.hasArg(OPT_no_code_completion_globals); 700 Opts.CodeCompleteOpts.IncludeBriefComments 701 = Args.hasArg(OPT_code_completion_brief_comments); 702 703 Opts.OverrideRecordLayoutsFile 704 = Args.getLastArgValue(OPT_foverride_record_layout_EQ); 705 if (const Arg *A = Args.getLastArg(OPT_arcmt_check, 706 OPT_arcmt_modify, 707 OPT_arcmt_migrate)) { 708 switch (A->getOption().getID()) { 709 default: 710 llvm_unreachable("missed a case"); 711 case OPT_arcmt_check: 712 Opts.ARCMTAction = FrontendOptions::ARCMT_Check; 713 break; 714 case OPT_arcmt_modify: 715 Opts.ARCMTAction = FrontendOptions::ARCMT_Modify; 716 break; 717 case OPT_arcmt_migrate: 718 Opts.ARCMTAction = FrontendOptions::ARCMT_Migrate; 719 break; 720 } 721 } 722 Opts.MTMigrateDir = Args.getLastArgValue(OPT_mt_migrate_directory); 723 Opts.ARCMTMigrateReportOut 724 = Args.getLastArgValue(OPT_arcmt_migrate_report_output); 725 Opts.ARCMTMigrateEmitARCErrors 726 = Args.hasArg(OPT_arcmt_migrate_emit_arc_errors); 727 728 if (Args.hasArg(OPT_objcmt_migrate_literals)) 729 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_Literals; 730 if (Args.hasArg(OPT_objcmt_migrate_subscripting)) 731 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_Subscripting; 732 733 if (Opts.ARCMTAction != FrontendOptions::ARCMT_None && 734 Opts.ObjCMTAction != FrontendOptions::ObjCMT_None) { 735 Diags.Report(diag::err_drv_argument_not_allowed_with) 736 << "ARC migration" << "ObjC migration"; 737 } 738 739 InputKind DashX = IK_None; 740 if (const Arg *A = Args.getLastArg(OPT_x)) { 741 DashX = llvm::StringSwitch<InputKind>(A->getValue()) 742 .Case("c", IK_C) 743 .Case("cl", IK_OpenCL) 744 .Case("cuda", IK_CUDA) 745 .Case("c++", IK_CXX) 746 .Case("objective-c", IK_ObjC) 747 .Case("objective-c++", IK_ObjCXX) 748 .Case("cpp-output", IK_PreprocessedC) 749 .Case("assembler-with-cpp", IK_Asm) 750 .Case("c++-cpp-output", IK_PreprocessedCXX) 751 .Case("objective-c-cpp-output", IK_PreprocessedObjC) 752 .Case("objc-cpp-output", IK_PreprocessedObjC) 753 .Case("objective-c++-cpp-output", IK_PreprocessedObjCXX) 754 .Case("objc++-cpp-output", IK_PreprocessedObjCXX) 755 .Case("c-header", IK_C) 756 .Case("cl-header", IK_OpenCL) 757 .Case("objective-c-header", IK_ObjC) 758 .Case("c++-header", IK_CXX) 759 .Case("objective-c++-header", IK_ObjCXX) 760 .Case("ast", IK_AST) 761 .Case("ir", IK_LLVM_IR) 762 .Default(IK_None); 763 if (DashX == IK_None) 764 Diags.Report(diag::err_drv_invalid_value) 765 << A->getAsString(Args) << A->getValue(); 766 } 767 768 // '-' is the default input if none is given. 769 std::vector<std::string> Inputs = Args.getAllArgValues(OPT_INPUT); 770 Opts.Inputs.clear(); 771 if (Inputs.empty()) 772 Inputs.push_back("-"); 773 for (unsigned i = 0, e = Inputs.size(); i != e; ++i) { 774 InputKind IK = DashX; 775 if (IK == IK_None) { 776 IK = FrontendOptions::getInputKindForExtension( 777 StringRef(Inputs[i]).rsplit('.').second); 778 // FIXME: Remove this hack. 779 if (i == 0) 780 DashX = IK; 781 } 782 Opts.Inputs.push_back(FrontendInputFile(Inputs[i], IK)); 783 } 784 785 return DashX; 786 } 787 788 std::string CompilerInvocation::GetResourcesPath(const char *Argv0, 789 void *MainAddr) { 790 llvm::sys::Path P = llvm::sys::Path::GetMainExecutable(Argv0, MainAddr); 791 792 if (!P.isEmpty()) { 793 P.eraseComponent(); // Remove /clang from foo/bin/clang 794 P.eraseComponent(); // Remove /bin from foo/bin 795 796 // Get foo/lib/clang/<version>/include 797 P.appendComponent("lib"); 798 P.appendComponent("clang"); 799 P.appendComponent(CLANG_VERSION_STRING); 800 } 801 802 return P.str(); 803 } 804 805 static void ParseHeaderSearchArgs(HeaderSearchOptions &Opts, ArgList &Args) { 806 using namespace options; 807 Opts.Sysroot = Args.getLastArgValue(OPT_isysroot, "/"); 808 Opts.Verbose = Args.hasArg(OPT_v); 809 Opts.UseBuiltinIncludes = !Args.hasArg(OPT_nobuiltininc); 810 Opts.UseStandardSystemIncludes = !Args.hasArg(OPT_nostdsysteminc); 811 Opts.UseStandardCXXIncludes = !Args.hasArg(OPT_nostdincxx); 812 if (const Arg *A = Args.getLastArg(OPT_stdlib_EQ)) 813 Opts.UseLibcxx = (strcmp(A->getValue(), "libc++") == 0); 814 Opts.ResourceDir = Args.getLastArgValue(OPT_resource_dir); 815 Opts.ModuleCachePath = Args.getLastArgValue(OPT_fmodule_cache_path); 816 Opts.DisableModuleHash = Args.hasArg(OPT_fdisable_module_hash); 817 818 // Add -I..., -F..., and -index-header-map options in order. 819 bool IsIndexHeaderMap = false; 820 for (arg_iterator it = Args.filtered_begin(OPT_I, OPT_F, 821 OPT_index_header_map), 822 ie = Args.filtered_end(); it != ie; ++it) { 823 if ((*it)->getOption().matches(OPT_index_header_map)) { 824 // -index-header-map applies to the next -I or -F. 825 IsIndexHeaderMap = true; 826 continue; 827 } 828 829 frontend::IncludeDirGroup Group 830 = IsIndexHeaderMap? frontend::IndexHeaderMap : frontend::Angled; 831 832 Opts.AddPath((*it)->getValue(), Group, true, 833 /*IsFramework=*/ (*it)->getOption().matches(OPT_F), false); 834 IsIndexHeaderMap = false; 835 } 836 837 // Add -iprefix/-iwith-prefix/-iwithprefixbefore options. 838 StringRef Prefix = ""; // FIXME: This isn't the correct default prefix. 839 for (arg_iterator it = Args.filtered_begin(OPT_iprefix, OPT_iwithprefix, 840 OPT_iwithprefixbefore), 841 ie = Args.filtered_end(); it != ie; ++it) { 842 const Arg *A = *it; 843 if (A->getOption().matches(OPT_iprefix)) 844 Prefix = A->getValue(); 845 else if (A->getOption().matches(OPT_iwithprefix)) 846 Opts.AddPath(Prefix.str() + A->getValue(), 847 frontend::System, false, false, false); 848 else 849 Opts.AddPath(Prefix.str() + A->getValue(), 850 frontend::Angled, false, false, false); 851 } 852 853 for (arg_iterator it = Args.filtered_begin(OPT_idirafter), 854 ie = Args.filtered_end(); it != ie; ++it) 855 Opts.AddPath((*it)->getValue(), frontend::After, true, false, false); 856 for (arg_iterator it = Args.filtered_begin(OPT_iquote), 857 ie = Args.filtered_end(); it != ie; ++it) 858 Opts.AddPath((*it)->getValue(), frontend::Quoted, true, false, false); 859 for (arg_iterator it = Args.filtered_begin(OPT_isystem, 860 OPT_iwithsysroot), ie = Args.filtered_end(); it != ie; ++it) 861 Opts.AddPath((*it)->getValue(), frontend::System, true, false, 862 !(*it)->getOption().matches(OPT_iwithsysroot)); 863 for (arg_iterator it = Args.filtered_begin(OPT_iframework), 864 ie = Args.filtered_end(); it != ie; ++it) 865 Opts.AddPath((*it)->getValue(), frontend::System, true, true, 866 true); 867 868 // Add the paths for the various language specific isystem flags. 869 for (arg_iterator it = Args.filtered_begin(OPT_c_isystem), 870 ie = Args.filtered_end(); it != ie; ++it) 871 Opts.AddPath((*it)->getValue(), frontend::CSystem, true, false, true); 872 for (arg_iterator it = Args.filtered_begin(OPT_cxx_isystem), 873 ie = Args.filtered_end(); it != ie; ++it) 874 Opts.AddPath((*it)->getValue(), frontend::CXXSystem, true, false, true); 875 for (arg_iterator it = Args.filtered_begin(OPT_objc_isystem), 876 ie = Args.filtered_end(); it != ie; ++it) 877 Opts.AddPath((*it)->getValue(), frontend::ObjCSystem, true, false,true); 878 for (arg_iterator it = Args.filtered_begin(OPT_objcxx_isystem), 879 ie = Args.filtered_end(); it != ie; ++it) 880 Opts.AddPath((*it)->getValue(), frontend::ObjCXXSystem, true, false, 881 true); 882 883 // Add the internal paths from a driver that detects standard include paths. 884 for (arg_iterator I = Args.filtered_begin(OPT_internal_isystem, 885 OPT_internal_externc_isystem), 886 E = Args.filtered_end(); 887 I != E; ++I) 888 Opts.AddPath((*I)->getValue(), frontend::System, 889 false, false, /*IgnoreSysRoot=*/true, /*IsInternal=*/true, 890 (*I)->getOption().matches(OPT_internal_externc_isystem)); 891 892 // Add the path prefixes which are implicitly treated as being system headers. 893 for (arg_iterator I = Args.filtered_begin(OPT_isystem_prefix, 894 OPT_ino_system_prefix), 895 E = Args.filtered_end(); 896 I != E; ++I) 897 Opts.AddSystemHeaderPrefix((*I)->getValue(), 898 (*I)->getOption().matches(OPT_isystem_prefix)); 899 } 900 901 void CompilerInvocation::setLangDefaults(LangOptions &Opts, InputKind IK, 902 LangStandard::Kind LangStd) { 903 // Set some properties which depend solely on the input kind; it would be nice 904 // to move these to the language standard, and have the driver resolve the 905 // input kind + language standard. 906 if (IK == IK_Asm) { 907 Opts.AsmPreprocessor = 1; 908 } else if (IK == IK_ObjC || 909 IK == IK_ObjCXX || 910 IK == IK_PreprocessedObjC || 911 IK == IK_PreprocessedObjCXX) { 912 Opts.ObjC1 = Opts.ObjC2 = 1; 913 } 914 915 if (LangStd == LangStandard::lang_unspecified) { 916 // Based on the base language, pick one. 917 switch (IK) { 918 case IK_None: 919 case IK_AST: 920 case IK_LLVM_IR: 921 llvm_unreachable("Invalid input kind!"); 922 case IK_OpenCL: 923 LangStd = LangStandard::lang_opencl; 924 break; 925 case IK_CUDA: 926 LangStd = LangStandard::lang_cuda; 927 break; 928 case IK_Asm: 929 case IK_C: 930 case IK_PreprocessedC: 931 case IK_ObjC: 932 case IK_PreprocessedObjC: 933 LangStd = LangStandard::lang_gnu99; 934 break; 935 case IK_CXX: 936 case IK_PreprocessedCXX: 937 case IK_ObjCXX: 938 case IK_PreprocessedObjCXX: 939 LangStd = LangStandard::lang_gnucxx98; 940 break; 941 } 942 } 943 944 const LangStandard &Std = LangStandard::getLangStandardForKind(LangStd); 945 Opts.LineComment = Std.hasLineComments(); 946 Opts.C99 = Std.isC99(); 947 Opts.C11 = Std.isC11(); 948 Opts.CPlusPlus = Std.isCPlusPlus(); 949 Opts.CPlusPlus11 = Std.isCPlusPlus11(); 950 Opts.CPlusPlus1y = Std.isCPlusPlus1y(); 951 Opts.Digraphs = Std.hasDigraphs(); 952 Opts.GNUMode = Std.isGNUMode(); 953 Opts.GNUInline = !Std.isC99(); 954 Opts.HexFloats = Std.hasHexFloats(); 955 Opts.ImplicitInt = Std.hasImplicitInt(); 956 957 // Set OpenCL Version. 958 if (LangStd == LangStandard::lang_opencl) { 959 Opts.OpenCL = 1; 960 Opts.OpenCLVersion = 100; 961 } 962 else if (LangStd == LangStandard::lang_opencl11) { 963 Opts.OpenCL = 1; 964 Opts.OpenCLVersion = 110; 965 } 966 else if (LangStd == LangStandard::lang_opencl12) { 967 Opts.OpenCL = 1; 968 Opts.OpenCLVersion = 120; 969 } 970 971 // OpenCL has some additional defaults. 972 if (Opts.OpenCL) { 973 Opts.AltiVec = 0; 974 Opts.CXXOperatorNames = 1; 975 Opts.LaxVectorConversions = 0; 976 Opts.DefaultFPContract = 1; 977 Opts.NativeHalfType = 1; 978 } 979 980 if (LangStd == LangStandard::lang_cuda) 981 Opts.CUDA = 1; 982 983 // OpenCL and C++ both have bool, true, false keywords. 984 Opts.Bool = Opts.OpenCL || Opts.CPlusPlus; 985 986 // C++ has wchar_t keyword. 987 Opts.WChar = Opts.CPlusPlus; 988 989 Opts.GNUKeywords = Opts.GNUMode; 990 Opts.CXXOperatorNames = Opts.CPlusPlus; 991 992 // Mimicing gcc's behavior, trigraphs are only enabled if -trigraphs 993 // is specified, or -std is set to a conforming mode. 994 Opts.Trigraphs = !Opts.GNUMode; 995 996 Opts.DollarIdents = !Opts.AsmPreprocessor; 997 } 998 999 static void ParseLangArgs(LangOptions &Opts, ArgList &Args, InputKind IK, 1000 DiagnosticsEngine &Diags) { 1001 // FIXME: Cleanup per-file based stuff. 1002 LangStandard::Kind LangStd = LangStandard::lang_unspecified; 1003 if (const Arg *A = Args.getLastArg(OPT_std_EQ)) { 1004 LangStd = llvm::StringSwitch<LangStandard::Kind>(A->getValue()) 1005 #define LANGSTANDARD(id, name, desc, features) \ 1006 .Case(name, LangStandard::lang_##id) 1007 #include "clang/Frontend/LangStandards.def" 1008 .Default(LangStandard::lang_unspecified); 1009 if (LangStd == LangStandard::lang_unspecified) 1010 Diags.Report(diag::err_drv_invalid_value) 1011 << A->getAsString(Args) << A->getValue(); 1012 else { 1013 // Valid standard, check to make sure language and standard are compatable. 1014 const LangStandard &Std = LangStandard::getLangStandardForKind(LangStd); 1015 switch (IK) { 1016 case IK_C: 1017 case IK_ObjC: 1018 case IK_PreprocessedC: 1019 case IK_PreprocessedObjC: 1020 if (!(Std.isC89() || Std.isC99())) 1021 Diags.Report(diag::err_drv_argument_not_allowed_with) 1022 << A->getAsString(Args) << "C/ObjC"; 1023 break; 1024 case IK_CXX: 1025 case IK_ObjCXX: 1026 case IK_PreprocessedCXX: 1027 case IK_PreprocessedObjCXX: 1028 if (!Std.isCPlusPlus()) 1029 Diags.Report(diag::err_drv_argument_not_allowed_with) 1030 << A->getAsString(Args) << "C++/ObjC++"; 1031 break; 1032 case IK_OpenCL: 1033 if (!Std.isC99()) 1034 Diags.Report(diag::err_drv_argument_not_allowed_with) 1035 << A->getAsString(Args) << "OpenCL"; 1036 break; 1037 case IK_CUDA: 1038 if (!Std.isCPlusPlus()) 1039 Diags.Report(diag::err_drv_argument_not_allowed_with) 1040 << A->getAsString(Args) << "CUDA"; 1041 break; 1042 default: 1043 break; 1044 } 1045 } 1046 } 1047 1048 // -cl-std only applies for OpenCL language standards. 1049 // Override the -std option in this case. 1050 if (const Arg *A = Args.getLastArg(OPT_cl_std_EQ)) { 1051 LangStandard::Kind OpenCLLangStd 1052 = llvm::StringSwitch<LangStandard::Kind>(A->getValue()) 1053 .Case("CL", LangStandard::lang_opencl) 1054 .Case("CL1.1", LangStandard::lang_opencl11) 1055 .Case("CL1.2", LangStandard::lang_opencl12) 1056 .Default(LangStandard::lang_unspecified); 1057 1058 if (OpenCLLangStd == LangStandard::lang_unspecified) { 1059 Diags.Report(diag::err_drv_invalid_value) 1060 << A->getAsString(Args) << A->getValue(); 1061 } 1062 else 1063 LangStd = OpenCLLangStd; 1064 } 1065 1066 CompilerInvocation::setLangDefaults(Opts, IK, LangStd); 1067 1068 // We abuse '-f[no-]gnu-keywords' to force overriding all GNU-extension 1069 // keywords. This behavior is provided by GCC's poorly named '-fasm' flag, 1070 // while a subset (the non-C++ GNU keywords) is provided by GCC's 1071 // '-fgnu-keywords'. Clang conflates the two for simplicity under the single 1072 // name, as it doesn't seem a useful distinction. 1073 Opts.GNUKeywords = Args.hasFlag(OPT_fgnu_keywords, OPT_fno_gnu_keywords, 1074 Opts.GNUKeywords); 1075 1076 if (Args.hasArg(OPT_fno_operator_names)) 1077 Opts.CXXOperatorNames = 0; 1078 1079 if (Opts.ObjC1) { 1080 if (Arg *arg = Args.getLastArg(OPT_fobjc_runtime_EQ)) { 1081 StringRef value = arg->getValue(); 1082 if (Opts.ObjCRuntime.tryParse(value)) 1083 Diags.Report(diag::err_drv_unknown_objc_runtime) << value; 1084 } 1085 1086 if (Args.hasArg(OPT_fobjc_gc_only)) 1087 Opts.setGC(LangOptions::GCOnly); 1088 else if (Args.hasArg(OPT_fobjc_gc)) 1089 Opts.setGC(LangOptions::HybridGC); 1090 else if (Args.hasArg(OPT_fobjc_arc)) { 1091 Opts.ObjCAutoRefCount = 1; 1092 if (!Opts.ObjCRuntime.allowsARC()) 1093 Diags.Report(diag::err_arc_unsupported_on_runtime); 1094 1095 // Only set ObjCARCWeak if ARC is enabled. 1096 if (Args.hasArg(OPT_fobjc_runtime_has_weak)) 1097 Opts.ObjCARCWeak = 1; 1098 else 1099 Opts.ObjCARCWeak = Opts.ObjCRuntime.allowsWeak(); 1100 } 1101 1102 if (Args.hasArg(OPT_fno_objc_infer_related_result_type)) 1103 Opts.ObjCInferRelatedResultType = 0; 1104 } 1105 1106 if (Args.hasArg(OPT_fgnu89_inline)) 1107 Opts.GNUInline = 1; 1108 1109 if (Args.hasArg(OPT_fapple_kext)) { 1110 if (!Opts.CPlusPlus) 1111 Diags.Report(diag::warn_c_kext); 1112 else 1113 Opts.AppleKext = 1; 1114 } 1115 1116 if (Args.hasArg(OPT_print_ivar_layout)) 1117 Opts.ObjCGCBitmapPrint = 1; 1118 if (Args.hasArg(OPT_fno_constant_cfstrings)) 1119 Opts.NoConstantCFStrings = 1; 1120 1121 if (Args.hasArg(OPT_faltivec)) 1122 Opts.AltiVec = 1; 1123 1124 if (Args.hasArg(OPT_pthread)) 1125 Opts.POSIXThreads = 1; 1126 1127 if (Args.hasArg(OPT_fdelayed_template_parsing)) 1128 Opts.DelayedTemplateParsing = 1; 1129 1130 StringRef Vis = Args.getLastArgValue(OPT_fvisibility, "default"); 1131 if (Vis == "default") 1132 Opts.setVisibilityMode(DefaultVisibility); 1133 else if (Vis == "hidden") 1134 Opts.setVisibilityMode(HiddenVisibility); 1135 else if (Vis == "protected") 1136 // FIXME: diagnose if target does not support protected visibility 1137 Opts.setVisibilityMode(ProtectedVisibility); 1138 else 1139 Diags.Report(diag::err_drv_invalid_value) 1140 << Args.getLastArg(OPT_fvisibility)->getAsString(Args) << Vis; 1141 1142 if (Args.hasArg(OPT_fvisibility_inlines_hidden)) 1143 Opts.InlineVisibilityHidden = 1; 1144 1145 if (Args.hasArg(OPT_ftrapv)) { 1146 Opts.setSignedOverflowBehavior(LangOptions::SOB_Trapping); 1147 // Set the handler, if one is specified. 1148 Opts.OverflowHandler = 1149 Args.getLastArgValue(OPT_ftrapv_handler); 1150 } 1151 else if (Args.hasArg(OPT_fwrapv)) 1152 Opts.setSignedOverflowBehavior(LangOptions::SOB_Defined); 1153 1154 if (Args.hasArg(OPT_trigraphs)) 1155 Opts.Trigraphs = 1; 1156 1157 Opts.DollarIdents = Args.hasFlag(OPT_fdollars_in_identifiers, 1158 OPT_fno_dollars_in_identifiers, 1159 Opts.DollarIdents); 1160 Opts.PascalStrings = Args.hasArg(OPT_fpascal_strings); 1161 Opts.MicrosoftExt 1162 = Args.hasArg(OPT_fms_extensions) || Args.hasArg(OPT_fms_compatibility); 1163 Opts.MicrosoftMode = Args.hasArg(OPT_fms_compatibility); 1164 Opts.AsmBlocks = Args.hasArg(OPT_fasm_blocks) || Opts.MicrosoftExt; 1165 Opts.MSCVersion = Args.getLastArgIntValue(OPT_fmsc_version, 0, Diags); 1166 Opts.Borland = Args.hasArg(OPT_fborland_extensions); 1167 Opts.WritableStrings = Args.hasArg(OPT_fwritable_strings); 1168 Opts.ConstStrings = Args.hasFlag(OPT_fconst_strings, OPT_fno_const_strings, 1169 Opts.ConstStrings); 1170 if (Args.hasArg(OPT_fno_lax_vector_conversions)) 1171 Opts.LaxVectorConversions = 0; 1172 if (Args.hasArg(OPT_fno_threadsafe_statics)) 1173 Opts.ThreadsafeStatics = 0; 1174 Opts.Exceptions = Args.hasArg(OPT_fexceptions); 1175 Opts.ObjCExceptions = Args.hasArg(OPT_fobjc_exceptions); 1176 Opts.CXXExceptions = Args.hasArg(OPT_fcxx_exceptions); 1177 Opts.SjLjExceptions = Args.hasArg(OPT_fsjlj_exceptions); 1178 Opts.TraditionalCPP = Args.hasArg(OPT_traditional_cpp); 1179 1180 Opts.RTTI = !Args.hasArg(OPT_fno_rtti); 1181 Opts.Blocks = Args.hasArg(OPT_fblocks); 1182 Opts.BlocksRuntimeOptional = Args.hasArg(OPT_fblocks_runtime_optional); 1183 Opts.Modules = Args.hasArg(OPT_fmodules); 1184 Opts.CharIsSigned = !Args.hasArg(OPT_fno_signed_char); 1185 Opts.WChar = Opts.CPlusPlus && !Args.hasArg(OPT_fno_wchar); 1186 Opts.ShortWChar = Args.hasArg(OPT_fshort_wchar); 1187 Opts.ShortEnums = Args.hasArg(OPT_fshort_enums); 1188 Opts.Freestanding = Args.hasArg(OPT_ffreestanding); 1189 Opts.NoBuiltin = Args.hasArg(OPT_fno_builtin) || Opts.Freestanding; 1190 Opts.AssumeSaneOperatorNew = !Args.hasArg(OPT_fno_assume_sane_operator_new); 1191 Opts.HeinousExtensions = Args.hasArg(OPT_fheinous_gnu_extensions); 1192 Opts.AccessControl = !Args.hasArg(OPT_fno_access_control); 1193 Opts.ElideConstructors = !Args.hasArg(OPT_fno_elide_constructors); 1194 Opts.MathErrno = Args.hasArg(OPT_fmath_errno); 1195 Opts.InstantiationDepth = Args.getLastArgIntValue(OPT_ftemplate_depth, 512, 1196 Diags); 1197 Opts.ConstexprCallDepth = Args.getLastArgIntValue(OPT_fconstexpr_depth, 512, 1198 Diags); 1199 Opts.DelayedTemplateParsing = Args.hasArg(OPT_fdelayed_template_parsing); 1200 Opts.NumLargeByValueCopy = Args.getLastArgIntValue(OPT_Wlarge_by_value_copy_EQ, 1201 0, Diags); 1202 Opts.MSBitfields = Args.hasArg(OPT_mms_bitfields); 1203 Opts.ObjCConstantStringClass = 1204 Args.getLastArgValue(OPT_fconstant_string_class); 1205 Opts.ObjCDefaultSynthProperties = 1206 Args.hasArg(OPT_fobjc_default_synthesize_properties); 1207 Opts.EncodeExtendedBlockSig = 1208 Args.hasArg(OPT_fencode_extended_block_signature); 1209 Opts.EmitAllDecls = Args.hasArg(OPT_femit_all_decls); 1210 Opts.PackStruct = Args.getLastArgIntValue(OPT_fpack_struct_EQ, 0, Diags); 1211 Opts.PICLevel = Args.getLastArgIntValue(OPT_pic_level, 0, Diags); 1212 Opts.PIELevel = Args.getLastArgIntValue(OPT_pie_level, 0, Diags); 1213 Opts.Static = Args.hasArg(OPT_static_define); 1214 Opts.DumpRecordLayoutsSimple = Args.hasArg(OPT_fdump_record_layouts_simple); 1215 Opts.DumpRecordLayouts = Opts.DumpRecordLayoutsSimple 1216 || Args.hasArg(OPT_fdump_record_layouts); 1217 Opts.DumpVTableLayouts = Args.hasArg(OPT_fdump_vtable_layouts); 1218 Opts.SpellChecking = !Args.hasArg(OPT_fno_spell_checking); 1219 Opts.NoBitFieldTypeAlign = Args.hasArg(OPT_fno_bitfield_type_align); 1220 Opts.SinglePrecisionConstants = Args.hasArg(OPT_cl_single_precision_constant); 1221 Opts.FastRelaxedMath = Args.hasArg(OPT_cl_fast_relaxed_math); 1222 Opts.MRTD = Args.hasArg(OPT_mrtd); 1223 Opts.HexagonQdsp6Compat = Args.hasArg(OPT_mqdsp6_compat); 1224 Opts.FakeAddressSpaceMap = Args.hasArg(OPT_ffake_address_space_map); 1225 Opts.ParseUnknownAnytype = Args.hasArg(OPT_funknown_anytype); 1226 Opts.DebuggerSupport = Args.hasArg(OPT_fdebugger_support); 1227 Opts.DebuggerCastResultToId = Args.hasArg(OPT_fdebugger_cast_result_to_id); 1228 Opts.DebuggerObjCLiteral = Args.hasArg(OPT_fdebugger_objc_literal); 1229 Opts.ApplePragmaPack = Args.hasArg(OPT_fapple_pragma_pack); 1230 Opts.CurrentModule = Args.getLastArgValue(OPT_fmodule_name); 1231 1232 // Check if -fopenmp is specified. 1233 Opts.OpenMP = Args.hasArg(OPT_fopenmp); 1234 1235 // Record whether the __DEPRECATED define was requested. 1236 Opts.Deprecated = Args.hasFlag(OPT_fdeprecated_macro, 1237 OPT_fno_deprecated_macro, 1238 Opts.Deprecated); 1239 1240 // FIXME: Eliminate this dependency. 1241 unsigned Opt = getOptimizationLevel(Args, IK, Diags), 1242 OptSize = getOptimizationLevelSize(Args, IK, Diags); 1243 Opts.Optimize = Opt != 0; 1244 Opts.OptimizeSize = OptSize != 0; 1245 1246 // This is the __NO_INLINE__ define, which just depends on things like the 1247 // optimization level and -fno-inline, not actually whether the backend has 1248 // inlining enabled. 1249 Opts.NoInlineDefine = !Opt || Args.hasArg(OPT_fno_inline); 1250 1251 Opts.FastMath = Args.hasArg(OPT_ffast_math); 1252 Opts.FiniteMathOnly = Args.hasArg(OPT_ffinite_math_only); 1253 1254 Opts.RetainCommentsFromSystemHeaders = 1255 Args.hasArg(OPT_fretain_comments_from_system_headers); 1256 1257 unsigned SSP = Args.getLastArgIntValue(OPT_stack_protector, 0, Diags); 1258 switch (SSP) { 1259 default: 1260 Diags.Report(diag::err_drv_invalid_value) 1261 << Args.getLastArg(OPT_stack_protector)->getAsString(Args) << SSP; 1262 break; 1263 case 0: Opts.setStackProtector(LangOptions::SSPOff); break; 1264 case 1: Opts.setStackProtector(LangOptions::SSPOn); break; 1265 case 2: Opts.setStackProtector(LangOptions::SSPReq); break; 1266 } 1267 1268 // Parse -fsanitize= arguments. 1269 std::vector<std::string> Sanitizers = Args.getAllArgValues(OPT_fsanitize_EQ); 1270 for (unsigned I = 0, N = Sanitizers.size(); I != N; ++I) { 1271 // Since the Opts.Sanitize* values are bitfields, it's a little tricky to 1272 // efficiently map string values to them. Perform the mapping indirectly: 1273 // convert strings to enumerated values, then switch over the enum to set 1274 // the right bitfield value. 1275 enum Sanitizer { 1276 #define SANITIZER(NAME, ID) \ 1277 ID, 1278 #include "clang/Basic/Sanitizers.def" 1279 Unknown 1280 }; 1281 switch (llvm::StringSwitch<unsigned>(Sanitizers[I]) 1282 #define SANITIZER(NAME, ID) \ 1283 .Case(NAME, ID) 1284 #include "clang/Basic/Sanitizers.def" 1285 .Default(Unknown)) { 1286 #define SANITIZER(NAME, ID) \ 1287 case ID: \ 1288 Opts.Sanitize.ID = true; \ 1289 break; 1290 #include "clang/Basic/Sanitizers.def" 1291 1292 case Unknown: 1293 Diags.Report(diag::err_drv_invalid_value) 1294 << "-fsanitize=" << Sanitizers[I]; 1295 break; 1296 } 1297 } 1298 } 1299 1300 static void ParsePreprocessorArgs(PreprocessorOptions &Opts, ArgList &Args, 1301 FileManager &FileMgr, 1302 DiagnosticsEngine &Diags) { 1303 using namespace options; 1304 Opts.ImplicitPCHInclude = Args.getLastArgValue(OPT_include_pch); 1305 Opts.ImplicitPTHInclude = Args.getLastArgValue(OPT_include_pth); 1306 if (const Arg *A = Args.getLastArg(OPT_token_cache)) 1307 Opts.TokenCache = A->getValue(); 1308 else 1309 Opts.TokenCache = Opts.ImplicitPTHInclude; 1310 Opts.UsePredefines = !Args.hasArg(OPT_undef); 1311 Opts.DetailedRecord = Args.hasArg(OPT_detailed_preprocessing_record); 1312 Opts.DisablePCHValidation = Args.hasArg(OPT_fno_validate_pch); 1313 1314 Opts.DumpDeserializedPCHDecls = Args.hasArg(OPT_dump_deserialized_pch_decls); 1315 for (arg_iterator it = Args.filtered_begin(OPT_error_on_deserialized_pch_decl), 1316 ie = Args.filtered_end(); it != ie; ++it) { 1317 const Arg *A = *it; 1318 Opts.DeserializedPCHDeclsToErrorOn.insert(A->getValue()); 1319 } 1320 1321 if (const Arg *A = Args.getLastArg(OPT_preamble_bytes_EQ)) { 1322 StringRef Value(A->getValue()); 1323 size_t Comma = Value.find(','); 1324 unsigned Bytes = 0; 1325 unsigned EndOfLine = 0; 1326 1327 if (Comma == StringRef::npos || 1328 Value.substr(0, Comma).getAsInteger(10, Bytes) || 1329 Value.substr(Comma + 1).getAsInteger(10, EndOfLine)) 1330 Diags.Report(diag::err_drv_preamble_format); 1331 else { 1332 Opts.PrecompiledPreambleBytes.first = Bytes; 1333 Opts.PrecompiledPreambleBytes.second = (EndOfLine != 0); 1334 } 1335 } 1336 1337 // Add macros from the command line. 1338 for (arg_iterator it = Args.filtered_begin(OPT_D, OPT_U), 1339 ie = Args.filtered_end(); it != ie; ++it) { 1340 if ((*it)->getOption().matches(OPT_D)) 1341 Opts.addMacroDef((*it)->getValue()); 1342 else 1343 Opts.addMacroUndef((*it)->getValue()); 1344 } 1345 1346 Opts.MacroIncludes = Args.getAllArgValues(OPT_imacros); 1347 1348 // Add the ordered list of -includes. 1349 for (arg_iterator it = Args.filtered_begin(OPT_include, OPT_include_pch, 1350 OPT_include_pth), 1351 ie = Args.filtered_end(); it != ie; ++it) { 1352 const Arg *A = *it; 1353 Opts.Includes.push_back(A->getValue()); 1354 } 1355 1356 for (arg_iterator it = Args.filtered_begin(OPT_chain_include), 1357 ie = Args.filtered_end(); it != ie; ++it) { 1358 const Arg *A = *it; 1359 Opts.ChainedIncludes.push_back(A->getValue()); 1360 } 1361 1362 // Include 'altivec.h' if -faltivec option present 1363 if (Args.hasArg(OPT_faltivec)) 1364 Opts.Includes.push_back("altivec.h"); 1365 1366 for (arg_iterator it = Args.filtered_begin(OPT_remap_file), 1367 ie = Args.filtered_end(); it != ie; ++it) { 1368 const Arg *A = *it; 1369 std::pair<StringRef,StringRef> Split = 1370 StringRef(A->getValue()).split(';'); 1371 1372 if (Split.second.empty()) { 1373 Diags.Report(diag::err_drv_invalid_remap_file) << A->getAsString(Args); 1374 continue; 1375 } 1376 1377 Opts.addRemappedFile(Split.first, Split.second); 1378 } 1379 1380 if (Arg *A = Args.getLastArg(OPT_fobjc_arc_cxxlib_EQ)) { 1381 StringRef Name = A->getValue(); 1382 unsigned Library = llvm::StringSwitch<unsigned>(Name) 1383 .Case("libc++", ARCXX_libcxx) 1384 .Case("libstdc++", ARCXX_libstdcxx) 1385 .Case("none", ARCXX_nolib) 1386 .Default(~0U); 1387 if (Library == ~0U) 1388 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Name; 1389 else 1390 Opts.ObjCXXARCStandardLibrary = (ObjCXXARCStandardLibraryKind)Library; 1391 } 1392 } 1393 1394 static void ParsePreprocessorOutputArgs(PreprocessorOutputOptions &Opts, 1395 ArgList &Args) { 1396 using namespace options; 1397 Opts.ShowCPP = !Args.hasArg(OPT_dM); 1398 Opts.ShowComments = Args.hasArg(OPT_C); 1399 Opts.ShowLineMarkers = !Args.hasArg(OPT_P); 1400 Opts.ShowMacroComments = Args.hasArg(OPT_CC); 1401 Opts.ShowMacros = Args.hasArg(OPT_dM) || Args.hasArg(OPT_dD); 1402 Opts.RewriteIncludes = Args.hasArg(OPT_frewrite_includes); 1403 } 1404 1405 static void ParseTargetArgs(TargetOptions &Opts, ArgList &Args) { 1406 using namespace options; 1407 Opts.ABI = Args.getLastArgValue(OPT_target_abi); 1408 Opts.CXXABI = Args.getLastArgValue(OPT_cxx_abi); 1409 Opts.CPU = Args.getLastArgValue(OPT_target_cpu); 1410 Opts.FeaturesAsWritten = Args.getAllArgValues(OPT_target_feature); 1411 Opts.LinkerVersion = Args.getLastArgValue(OPT_target_linker_version); 1412 Opts.Triple = llvm::Triple::normalize(Args.getLastArgValue(OPT_triple)); 1413 1414 // Use the default target triple if unspecified. 1415 if (Opts.Triple.empty()) 1416 Opts.Triple = llvm::sys::getDefaultTargetTriple(); 1417 } 1418 1419 // 1420 1421 bool CompilerInvocation::CreateFromArgs(CompilerInvocation &Res, 1422 const char *const *ArgBegin, 1423 const char *const *ArgEnd, 1424 DiagnosticsEngine &Diags) { 1425 bool Success = true; 1426 1427 // Parse the arguments. 1428 OwningPtr<OptTable> Opts(createDriverOptTable()); 1429 unsigned MissingArgIndex, MissingArgCount; 1430 OwningPtr<InputArgList> Args( 1431 Opts->ParseArgs(ArgBegin, ArgEnd,MissingArgIndex, MissingArgCount)); 1432 1433 // Check for missing argument error. 1434 if (MissingArgCount) { 1435 Diags.Report(diag::err_drv_missing_argument) 1436 << Args->getArgString(MissingArgIndex) << MissingArgCount; 1437 Success = false; 1438 } 1439 1440 // Issue errors on unknown arguments. 1441 for (arg_iterator it = Args->filtered_begin(OPT_UNKNOWN), 1442 ie = Args->filtered_end(); it != ie; ++it) { 1443 Diags.Report(diag::err_drv_unknown_argument) << (*it)->getAsString(*Args); 1444 Success = false; 1445 } 1446 1447 // Issue errors on arguments that are not valid for CC1. 1448 for (ArgList::iterator I = Args->begin(), E = Args->end(); 1449 I != E; ++I) { 1450 if (!(*I)->getOption().hasFlag(options::CC1Option)) { 1451 Diags.Report(diag::err_drv_unknown_argument) << (*I)->getAsString(*Args); 1452 Success = false; 1453 } 1454 } 1455 1456 Success = ParseAnalyzerArgs(*Res.getAnalyzerOpts(), *Args, Diags) && Success; 1457 Success = ParseMigratorArgs(Res.getMigratorOpts(), *Args) && Success; 1458 ParseDependencyOutputArgs(Res.getDependencyOutputOpts(), *Args); 1459 Success = ParseDiagnosticArgs(Res.getDiagnosticOpts(), *Args, &Diags) 1460 && Success; 1461 ParseFileSystemArgs(Res.getFileSystemOpts(), *Args); 1462 // FIXME: We shouldn't have to pass the DashX option around here 1463 InputKind DashX = ParseFrontendArgs(Res.getFrontendOpts(), *Args, Diags); 1464 Success = ParseCodeGenArgs(Res.getCodeGenOpts(), *Args, DashX, Diags) 1465 && Success; 1466 ParseHeaderSearchArgs(Res.getHeaderSearchOpts(), *Args); 1467 if (DashX != IK_AST && DashX != IK_LLVM_IR) { 1468 ParseLangArgs(*Res.getLangOpts(), *Args, DashX, Diags); 1469 if (Res.getFrontendOpts().ProgramAction == frontend::RewriteObjC) 1470 Res.getLangOpts()->ObjCExceptions = 1; 1471 } 1472 // FIXME: ParsePreprocessorArgs uses the FileManager to read the contents of 1473 // PCH file and find the original header name. Remove the need to do that in 1474 // ParsePreprocessorArgs and remove the FileManager 1475 // parameters from the function and the "FileManager.h" #include. 1476 FileManager FileMgr(Res.getFileSystemOpts()); 1477 ParsePreprocessorArgs(Res.getPreprocessorOpts(), *Args, FileMgr, Diags); 1478 ParsePreprocessorOutputArgs(Res.getPreprocessorOutputOpts(), *Args); 1479 ParseTargetArgs(Res.getTargetOpts(), *Args); 1480 1481 return Success; 1482 } 1483 1484 namespace { 1485 1486 class ModuleSignature { 1487 SmallVector<uint64_t, 16> Data; 1488 unsigned CurBit; 1489 uint64_t CurValue; 1490 1491 public: 1492 ModuleSignature() : CurBit(0), CurValue(0) { } 1493 1494 void add(uint64_t Value, unsigned Bits); 1495 void add(StringRef Value); 1496 void flush(); 1497 1498 llvm::APInt getAsInteger() const; 1499 }; 1500 } 1501 1502 void ModuleSignature::add(uint64_t Value, unsigned int NumBits) { 1503 CurValue |= Value << CurBit; 1504 if (CurBit + NumBits < 64) { 1505 CurBit += NumBits; 1506 return; 1507 } 1508 1509 // Add the current word. 1510 Data.push_back(CurValue); 1511 1512 if (CurBit) 1513 CurValue = Value >> (64-CurBit); 1514 else 1515 CurValue = 0; 1516 CurBit = (CurBit+NumBits) & 63; 1517 } 1518 1519 void ModuleSignature::flush() { 1520 if (CurBit == 0) 1521 return; 1522 1523 Data.push_back(CurValue); 1524 CurBit = 0; 1525 CurValue = 0; 1526 } 1527 1528 void ModuleSignature::add(StringRef Value) { 1529 for (StringRef::iterator I = Value.begin(), IEnd = Value.end(); I != IEnd;++I) 1530 add(*I, 8); 1531 } 1532 1533 llvm::APInt ModuleSignature::getAsInteger() const { 1534 return llvm::APInt(Data.size() * 64, Data); 1535 } 1536 1537 std::string CompilerInvocation::getModuleHash() const { 1538 using llvm::hash_code; 1539 using llvm::hash_value; 1540 using llvm::hash_combine; 1541 1542 // Start the signature with the compiler version. 1543 // FIXME: We'd rather use something more cryptographically sound than 1544 // CityHash, but this will do for now. 1545 hash_code code = hash_value(getClangFullRepositoryVersion()); 1546 1547 // Extend the signature with the language options 1548 #define LANGOPT(Name, Bits, Default, Description) \ 1549 code = hash_combine(code, LangOpts->Name); 1550 #define ENUM_LANGOPT(Name, Type, Bits, Default, Description) \ 1551 code = hash_combine(code, static_cast<unsigned>(LangOpts->get##Name())); 1552 #define BENIGN_LANGOPT(Name, Bits, Default, Description) 1553 #define BENIGN_ENUM_LANGOPT(Name, Type, Bits, Default, Description) 1554 #include "clang/Basic/LangOptions.def" 1555 1556 // Extend the signature with the target options. 1557 code = hash_combine(code, TargetOpts->Triple, TargetOpts->CPU, 1558 TargetOpts->ABI, TargetOpts->CXXABI, 1559 TargetOpts->LinkerVersion); 1560 for (unsigned i = 0, n = TargetOpts->FeaturesAsWritten.size(); i != n; ++i) 1561 code = hash_combine(code, TargetOpts->FeaturesAsWritten[i]); 1562 1563 // Extend the signature with preprocessor options. 1564 const PreprocessorOptions &ppOpts = getPreprocessorOpts(); 1565 code = hash_combine(code, ppOpts.UsePredefines, ppOpts.DetailedRecord); 1566 1567 std::vector<StringRef> MacroDefs; 1568 for (std::vector<std::pair<std::string, bool/*isUndef*/> >::const_iterator 1569 I = getPreprocessorOpts().Macros.begin(), 1570 IEnd = getPreprocessorOpts().Macros.end(); 1571 I != IEnd; ++I) { 1572 code = hash_combine(code, I->first, I->second); 1573 } 1574 1575 // Extend the signature with the sysroot. 1576 const HeaderSearchOptions &hsOpts = getHeaderSearchOpts(); 1577 code = hash_combine(code, hsOpts.Sysroot, hsOpts.UseBuiltinIncludes, 1578 hsOpts.UseStandardSystemIncludes, 1579 hsOpts.UseStandardCXXIncludes, 1580 hsOpts.UseLibcxx); 1581 1582 return llvm::APInt(64, code).toString(36, /*Signed=*/false); 1583 } 1584