1 //===--- CompilerInvocation.cpp -------------------------------------------===// 2 // 3 // The LLVM Compiler Infrastructure 4 // 5 // This file is distributed under the University of Illinois Open Source 6 // License. See LICENSE.TXT for details. 7 // 8 //===----------------------------------------------------------------------===// 9 10 #include "clang/Frontend/CompilerInvocation.h" 11 #include "clang/Basic/Diagnostic.h" 12 #include "clang/Basic/FileManager.h" 13 #include "clang/Basic/Version.h" 14 #include "clang/Driver/Arg.h" 15 #include "clang/Driver/ArgList.h" 16 #include "clang/Driver/DriverDiagnostic.h" 17 #include "clang/Driver/OptTable.h" 18 #include "clang/Driver/Option.h" 19 #include "clang/Driver/Options.h" 20 #include "clang/Frontend/LangStandard.h" 21 #include "clang/Lex/HeaderSearchOptions.h" 22 #include "clang/Serialization/ASTReader.h" 23 #include "llvm/ADT/Hashing.h" 24 #include "llvm/ADT/OwningPtr.h" 25 #include "llvm/ADT/SmallVector.h" 26 #include "llvm/ADT/StringExtras.h" 27 #include "llvm/ADT/StringSwitch.h" 28 #include "llvm/ADT/Triple.h" 29 #include "llvm/Support/ErrorHandling.h" 30 #include "llvm/Support/Host.h" 31 #include "llvm/Support/Path.h" 32 using namespace clang; 33 34 //===----------------------------------------------------------------------===// 35 // Initialization. 36 //===----------------------------------------------------------------------===// 37 38 CompilerInvocationBase::CompilerInvocationBase() 39 : LangOpts(new LangOptions()), TargetOpts(new TargetOptions()), 40 DiagnosticOpts(new DiagnosticOptions()), 41 HeaderSearchOpts(new HeaderSearchOptions()), 42 PreprocessorOpts(new PreprocessorOptions()) {} 43 44 CompilerInvocationBase::CompilerInvocationBase(const CompilerInvocationBase &X) 45 : RefCountedBase<CompilerInvocation>(), 46 LangOpts(new LangOptions(*X.getLangOpts())), 47 TargetOpts(new TargetOptions(X.getTargetOpts())), 48 DiagnosticOpts(new DiagnosticOptions(X.getDiagnosticOpts())), 49 HeaderSearchOpts(new HeaderSearchOptions(X.getHeaderSearchOpts())), 50 PreprocessorOpts(new PreprocessorOptions(X.getPreprocessorOpts())) {} 51 52 //===----------------------------------------------------------------------===// 53 // Deserialization (from args) 54 //===----------------------------------------------------------------------===// 55 56 using namespace clang::driver; 57 using namespace clang::driver::options; 58 59 // 60 61 static unsigned getOptimizationLevel(ArgList &Args, InputKind IK, 62 DiagnosticsEngine &Diags) { 63 unsigned DefaultOpt = 0; 64 if (IK == IK_OpenCL && !Args.hasArg(OPT_cl_opt_disable)) 65 DefaultOpt = 2; 66 67 if (Arg *A = Args.getLastArg(options::OPT_O_Group)) { 68 if (A->getOption().matches(options::OPT_O0)) 69 return 0; 70 71 assert (A->getOption().matches(options::OPT_O)); 72 73 StringRef S(A->getValue()); 74 if (S == "s" || S == "z" || S.empty()) 75 return 2; 76 77 return Args.getLastArgIntValue(OPT_O, DefaultOpt, Diags); 78 } 79 80 return DefaultOpt; 81 } 82 83 static unsigned getOptimizationLevelSize(ArgList &Args, InputKind IK, 84 DiagnosticsEngine &Diags) { 85 if (Arg *A = Args.getLastArg(options::OPT_O_Group)) { 86 if (A->getOption().matches(options::OPT_O)) { 87 switch (A->getValue()[0]) { 88 default: 89 return 0; 90 case 's': 91 return 1; 92 case 'z': 93 return 2; 94 } 95 } 96 } 97 return 0; 98 } 99 100 static void addWarningArgs(ArgList &Args, std::vector<std::string> &Warnings) { 101 for (arg_iterator I = Args.filtered_begin(OPT_W_Group), 102 E = Args.filtered_end(); I != E; ++I) { 103 Arg *A = *I; 104 // If the argument is a pure flag, add its name (minus the "W" at the beginning) 105 // to the warning list. Else, add its value (for the OPT_W case). 106 if (A->getOption().getKind() == Option::FlagClass) { 107 Warnings.push_back(A->getOption().getName().substr(1)); 108 } else { 109 for (unsigned Idx = 0, End = A->getNumValues(); 110 Idx < End; ++Idx) { 111 StringRef V = A->getValue(Idx); 112 // "-Wl," and such are not warning options. 113 // FIXME: Should be handled by putting these in separate flags. 114 if (V.startswith("l,") || V.startswith("a,") || V.startswith("p,")) 115 continue; 116 117 Warnings.push_back(V); 118 } 119 } 120 } 121 } 122 123 static bool ParseAnalyzerArgs(AnalyzerOptions &Opts, ArgList &Args, 124 DiagnosticsEngine &Diags) { 125 using namespace options; 126 bool Success = true; 127 if (Arg *A = Args.getLastArg(OPT_analyzer_store)) { 128 StringRef Name = A->getValue(); 129 AnalysisStores Value = llvm::StringSwitch<AnalysisStores>(Name) 130 #define ANALYSIS_STORE(NAME, CMDFLAG, DESC, CREATFN) \ 131 .Case(CMDFLAG, NAME##Model) 132 #include "clang/StaticAnalyzer/Core/Analyses.def" 133 .Default(NumStores); 134 if (Value == NumStores) { 135 Diags.Report(diag::err_drv_invalid_value) 136 << A->getAsString(Args) << Name; 137 Success = false; 138 } else { 139 Opts.AnalysisStoreOpt = Value; 140 } 141 } 142 143 if (Arg *A = Args.getLastArg(OPT_analyzer_constraints)) { 144 StringRef Name = A->getValue(); 145 AnalysisConstraints Value = llvm::StringSwitch<AnalysisConstraints>(Name) 146 #define ANALYSIS_CONSTRAINTS(NAME, CMDFLAG, DESC, CREATFN) \ 147 .Case(CMDFLAG, NAME##Model) 148 #include "clang/StaticAnalyzer/Core/Analyses.def" 149 .Default(NumConstraints); 150 if (Value == NumConstraints) { 151 Diags.Report(diag::err_drv_invalid_value) 152 << A->getAsString(Args) << Name; 153 Success = false; 154 } else { 155 Opts.AnalysisConstraintsOpt = Value; 156 } 157 } 158 159 if (Arg *A = Args.getLastArg(OPT_analyzer_output)) { 160 StringRef Name = A->getValue(); 161 AnalysisDiagClients Value = llvm::StringSwitch<AnalysisDiagClients>(Name) 162 #define ANALYSIS_DIAGNOSTICS(NAME, CMDFLAG, DESC, CREATFN, AUTOCREAT) \ 163 .Case(CMDFLAG, PD_##NAME) 164 #include "clang/StaticAnalyzer/Core/Analyses.def" 165 .Default(NUM_ANALYSIS_DIAG_CLIENTS); 166 if (Value == NUM_ANALYSIS_DIAG_CLIENTS) { 167 Diags.Report(diag::err_drv_invalid_value) 168 << A->getAsString(Args) << Name; 169 Success = false; 170 } else { 171 Opts.AnalysisDiagOpt = Value; 172 } 173 } 174 175 if (Arg *A = Args.getLastArg(OPT_analyzer_purge)) { 176 StringRef Name = A->getValue(); 177 AnalysisPurgeMode Value = llvm::StringSwitch<AnalysisPurgeMode>(Name) 178 #define ANALYSIS_PURGE(NAME, CMDFLAG, DESC) \ 179 .Case(CMDFLAG, NAME) 180 #include "clang/StaticAnalyzer/Core/Analyses.def" 181 .Default(NumPurgeModes); 182 if (Value == NumPurgeModes) { 183 Diags.Report(diag::err_drv_invalid_value) 184 << A->getAsString(Args) << Name; 185 Success = false; 186 } else { 187 Opts.AnalysisPurgeOpt = Value; 188 } 189 } 190 191 if (Arg *A = Args.getLastArg(OPT_analyzer_inlining_mode)) { 192 StringRef Name = A->getValue(); 193 AnalysisInliningMode Value = llvm::StringSwitch<AnalysisInliningMode>(Name) 194 #define ANALYSIS_INLINING_MODE(NAME, CMDFLAG, DESC) \ 195 .Case(CMDFLAG, NAME) 196 #include "clang/StaticAnalyzer/Core/Analyses.def" 197 .Default(NumInliningModes); 198 if (Value == NumInliningModes) { 199 Diags.Report(diag::err_drv_invalid_value) 200 << A->getAsString(Args) << Name; 201 Success = false; 202 } else { 203 Opts.InliningMode = Value; 204 } 205 } 206 207 Opts.ShowCheckerHelp = Args.hasArg(OPT_analyzer_checker_help); 208 Opts.visualizeExplodedGraphWithGraphViz = 209 Args.hasArg(OPT_analyzer_viz_egraph_graphviz); 210 Opts.visualizeExplodedGraphWithUbiGraph = 211 Args.hasArg(OPT_analyzer_viz_egraph_ubigraph); 212 Opts.NoRetryExhausted = Args.hasArg(OPT_analyzer_disable_retry_exhausted); 213 Opts.AnalyzeAll = Args.hasArg(OPT_analyzer_opt_analyze_headers); 214 Opts.AnalyzerDisplayProgress = Args.hasArg(OPT_analyzer_display_progress); 215 Opts.AnalyzeNestedBlocks = 216 Args.hasArg(OPT_analyzer_opt_analyze_nested_blocks); 217 Opts.eagerlyAssumeBinOpBifurcation = Args.hasArg(OPT_analyzer_eagerly_assume); 218 Opts.AnalyzeSpecificFunction = Args.getLastArgValue(OPT_analyze_function); 219 Opts.UnoptimizedCFG = Args.hasArg(OPT_analysis_UnoptimizedCFG); 220 Opts.TrimGraph = Args.hasArg(OPT_trim_egraph); 221 Opts.maxBlockVisitOnPath = Args.getLastArgIntValue(OPT_analyzer_max_loop, 4, Diags); 222 Opts.PrintStats = Args.hasArg(OPT_analyzer_stats); 223 Opts.InlineMaxStackDepth = 224 Args.getLastArgIntValue(OPT_analyzer_inline_max_stack_depth, 225 Opts.InlineMaxStackDepth, Diags); 226 227 Opts.CheckersControlList.clear(); 228 for (arg_iterator it = Args.filtered_begin(OPT_analyzer_checker, 229 OPT_analyzer_disable_checker), 230 ie = Args.filtered_end(); it != ie; ++it) { 231 const Arg *A = *it; 232 A->claim(); 233 bool enable = (A->getOption().getID() == OPT_analyzer_checker); 234 // We can have a list of comma separated checker names, e.g: 235 // '-analyzer-checker=cocoa,unix' 236 StringRef checkerList = A->getValue(); 237 SmallVector<StringRef, 4> checkers; 238 checkerList.split(checkers, ","); 239 for (unsigned i = 0, e = checkers.size(); i != e; ++i) 240 Opts.CheckersControlList.push_back(std::make_pair(checkers[i], enable)); 241 } 242 243 // Go through the analyzer configuration options. 244 for (arg_iterator it = Args.filtered_begin(OPT_analyzer_config), 245 ie = Args.filtered_end(); it != ie; ++it) { 246 const Arg *A = *it; 247 A->claim(); 248 // We can have a list of comma separated config names, e.g: 249 // '-analyzer-config key1=val1,key2=val2' 250 StringRef configList = A->getValue(); 251 SmallVector<StringRef, 4> configVals; 252 configList.split(configVals, ","); 253 for (unsigned i = 0, e = configVals.size(); i != e; ++i) { 254 StringRef key, val; 255 llvm::tie(key, val) = configVals[i].split("="); 256 if (val.empty()) { 257 Diags.Report(SourceLocation(), 258 diag::err_analyzer_config_no_value) << configVals[i]; 259 Success = false; 260 break; 261 } 262 if (val.find('=') != StringRef::npos) { 263 Diags.Report(SourceLocation(), 264 diag::err_analyzer_config_multiple_values) 265 << configVals[i]; 266 Success = false; 267 break; 268 } 269 Opts.Config[key] = val; 270 } 271 } 272 273 return Success; 274 } 275 276 static bool ParseMigratorArgs(MigratorOptions &Opts, ArgList &Args) { 277 Opts.NoNSAllocReallocError = Args.hasArg(OPT_migrator_no_nsalloc_error); 278 Opts.NoFinalizeRemoval = Args.hasArg(OPT_migrator_no_finalize_removal); 279 return true; 280 } 281 282 static bool ParseCodeGenArgs(CodeGenOptions &Opts, ArgList &Args, InputKind IK, 283 DiagnosticsEngine &Diags) { 284 using namespace options; 285 bool Success = true; 286 287 unsigned OptLevel = getOptimizationLevel(Args, IK, Diags); 288 if (OptLevel > 3) { 289 Diags.Report(diag::err_drv_invalid_value) 290 << Args.getLastArg(OPT_O)->getAsString(Args) << OptLevel; 291 OptLevel = 3; 292 Success = false; 293 } 294 Opts.OptimizationLevel = OptLevel; 295 296 // We must always run at least the always inlining pass. 297 Opts.setInlining( 298 (Opts.OptimizationLevel > 1) ? CodeGenOptions::NormalInlining 299 : CodeGenOptions::OnlyAlwaysInlining); 300 // -fno-inline-functions overrides OptimizationLevel > 1. 301 Opts.NoInline = Args.hasArg(OPT_fno_inline); 302 Opts.setInlining(Args.hasArg(OPT_fno_inline_functions) ? 303 CodeGenOptions::OnlyAlwaysInlining : Opts.getInlining()); 304 305 if (Args.hasArg(OPT_gline_tables_only)) { 306 Opts.setDebugInfo(CodeGenOptions::DebugLineTablesOnly); 307 } else if (Args.hasArg(OPT_g_Flag)) { 308 if (Args.hasFlag(OPT_flimit_debug_info, OPT_fno_limit_debug_info, true)) 309 Opts.setDebugInfo(CodeGenOptions::LimitedDebugInfo); 310 else 311 Opts.setDebugInfo(CodeGenOptions::FullDebugInfo); 312 } 313 Opts.DebugColumnInfo = Args.hasArg(OPT_dwarf_column_info); 314 315 Opts.ModulesAutolink = Args.hasArg(OPT_fmodules_autolink); 316 Opts.DisableLLVMOpts = Args.hasArg(OPT_disable_llvm_optzns); 317 Opts.DisableRedZone = Args.hasArg(OPT_disable_red_zone); 318 Opts.ForbidGuardVariables = Args.hasArg(OPT_fforbid_guard_variables); 319 Opts.UseRegisterSizedBitfieldAccess = Args.hasArg( 320 OPT_fuse_register_sized_bitfield_access); 321 Opts.RelaxedAliasing = Args.hasArg(OPT_relaxed_aliasing); 322 Opts.DwarfDebugFlags = Args.getLastArgValue(OPT_dwarf_debug_flags); 323 Opts.MergeAllConstants = !Args.hasArg(OPT_fno_merge_all_constants); 324 Opts.NoCommon = Args.hasArg(OPT_fno_common); 325 Opts.NoImplicitFloat = Args.hasArg(OPT_no_implicit_float); 326 Opts.OptimizeSize = getOptimizationLevelSize(Args, IK, Diags); 327 Opts.SimplifyLibCalls = !(Args.hasArg(OPT_fno_builtin) || 328 Args.hasArg(OPT_ffreestanding)); 329 Opts.UnrollLoops = Args.hasArg(OPT_funroll_loops) || 330 (Opts.OptimizationLevel > 1 && !Opts.OptimizeSize); 331 332 Opts.AsmVerbose = Args.hasArg(OPT_masm_verbose); 333 Opts.ObjCAutoRefCountExceptions = Args.hasArg(OPT_fobjc_arc_exceptions); 334 Opts.CUDAIsDevice = Args.hasArg(OPT_fcuda_is_device); 335 Opts.CXAAtExit = !Args.hasArg(OPT_fno_use_cxa_atexit); 336 Opts.CXXCtorDtorAliases = Args.hasArg(OPT_mconstructor_aliases); 337 Opts.CodeModel = Args.getLastArgValue(OPT_mcode_model); 338 Opts.DebugPass = Args.getLastArgValue(OPT_mdebug_pass); 339 Opts.DisableFPElim = Args.hasArg(OPT_mdisable_fp_elim); 340 Opts.DisableTailCalls = Args.hasArg(OPT_mdisable_tail_calls); 341 Opts.FloatABI = Args.getLastArgValue(OPT_mfloat_abi); 342 Opts.HiddenWeakVTables = Args.hasArg(OPT_fhidden_weak_vtables); 343 Opts.LessPreciseFPMAD = Args.hasArg(OPT_cl_mad_enable); 344 Opts.LimitFloatPrecision = Args.getLastArgValue(OPT_mlimit_float_precision); 345 Opts.NoInfsFPMath = (Args.hasArg(OPT_menable_no_infinities) || 346 Args.hasArg(OPT_cl_finite_math_only)|| 347 Args.hasArg(OPT_cl_fast_relaxed_math)); 348 Opts.NoNaNsFPMath = (Args.hasArg(OPT_menable_no_nans) || 349 Args.hasArg(OPT_cl_finite_math_only)|| 350 Args.hasArg(OPT_cl_fast_relaxed_math)); 351 Opts.NoZeroInitializedInBSS = Args.hasArg(OPT_mno_zero_initialized_in_bss); 352 Opts.BackendOptions = Args.getAllArgValues(OPT_backend_option); 353 Opts.NumRegisterParameters = Args.getLastArgIntValue(OPT_mregparm, 0, Diags); 354 Opts.NoGlobalMerge = Args.hasArg(OPT_mno_global_merge); 355 Opts.NoExecStack = Args.hasArg(OPT_mno_exec_stack); 356 Opts.RelaxAll = Args.hasArg(OPT_mrelax_all); 357 Opts.OmitLeafFramePointer = Args.hasArg(OPT_momit_leaf_frame_pointer); 358 Opts.SaveTempLabels = Args.hasArg(OPT_msave_temp_labels); 359 Opts.NoDwarf2CFIAsm = Args.hasArg(OPT_fno_dwarf2_cfi_asm); 360 Opts.NoDwarfDirectoryAsm = Args.hasArg(OPT_fno_dwarf_directory_asm); 361 Opts.SoftFloat = Args.hasArg(OPT_msoft_float); 362 Opts.StrictEnums = Args.hasArg(OPT_fstrict_enums); 363 Opts.UnsafeFPMath = Args.hasArg(OPT_menable_unsafe_fp_math) || 364 Args.hasArg(OPT_cl_unsafe_math_optimizations) || 365 Args.hasArg(OPT_cl_fast_relaxed_math); 366 Opts.UnwindTables = Args.hasArg(OPT_munwind_tables); 367 Opts.RelocationModel = Args.getLastArgValue(OPT_mrelocation_model, "pic"); 368 Opts.TrapFuncName = Args.getLastArgValue(OPT_ftrap_function_EQ); 369 Opts.UseInitArray = Args.hasArg(OPT_fuse_init_array); 370 371 Opts.FunctionSections = Args.hasArg(OPT_ffunction_sections); 372 Opts.DataSections = Args.hasArg(OPT_fdata_sections); 373 374 Opts.MainFileName = Args.getLastArgValue(OPT_main_file_name); 375 Opts.VerifyModule = !Args.hasArg(OPT_disable_llvm_verifier); 376 Opts.SanitizeRecover = !Args.hasArg(OPT_fno_sanitize_recover); 377 378 Opts.InstrumentFunctions = Args.hasArg(OPT_finstrument_functions); 379 Opts.InstrumentForProfiling = Args.hasArg(OPT_pg); 380 Opts.EmitGcovArcs = Args.hasArg(OPT_femit_coverage_data); 381 Opts.EmitGcovNotes = Args.hasArg(OPT_femit_coverage_notes); 382 Opts.EmitOpenCLArgMetadata = Args.hasArg(OPT_cl_kernel_arg_info); 383 Opts.CoverageFile = Args.getLastArgValue(OPT_coverage_file); 384 Opts.DebugCompilationDir = Args.getLastArgValue(OPT_fdebug_compilation_dir); 385 Opts.LinkBitcodeFile = Args.getLastArgValue(OPT_mlink_bitcode_file); 386 Opts.SanitizerBlacklistFile = Args.getLastArgValue(OPT_fsanitize_blacklist); 387 Opts.SanitizeMemoryTrackOrigins = 388 Args.hasArg(OPT_fsanitize_memory_track_origins); 389 Opts.SanitizeAddressZeroBaseShadow = 390 Args.hasArg(OPT_fsanitize_address_zero_base_shadow); 391 Opts.SanitizeUndefinedTrapOnError = 392 Args.hasArg(OPT_fsanitize_undefined_trap_on_error); 393 Opts.SSPBufferSize = 394 Args.getLastArgIntValue(OPT_stack_protector_buffer_size, 8, Diags); 395 Opts.StackRealignment = Args.hasArg(OPT_mstackrealign); 396 if (Arg *A = Args.getLastArg(OPT_mstack_alignment)) { 397 StringRef Val = A->getValue(); 398 unsigned StackAlignment = Opts.StackAlignment; 399 Val.getAsInteger(10, StackAlignment); 400 Opts.StackAlignment = StackAlignment; 401 } 402 403 if (Arg *A = Args.getLastArg(OPT_fobjc_dispatch_method_EQ)) { 404 StringRef Name = A->getValue(); 405 unsigned Method = llvm::StringSwitch<unsigned>(Name) 406 .Case("legacy", CodeGenOptions::Legacy) 407 .Case("non-legacy", CodeGenOptions::NonLegacy) 408 .Case("mixed", CodeGenOptions::Mixed) 409 .Default(~0U); 410 if (Method == ~0U) { 411 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Name; 412 Success = false; 413 } else { 414 Opts.setObjCDispatchMethod( 415 static_cast<CodeGenOptions::ObjCDispatchMethodKind>(Method)); 416 } 417 } 418 419 if (Arg *A = Args.getLastArg(OPT_ftlsmodel_EQ)) { 420 StringRef Name = A->getValue(); 421 unsigned Model = llvm::StringSwitch<unsigned>(Name) 422 .Case("global-dynamic", CodeGenOptions::GeneralDynamicTLSModel) 423 .Case("local-dynamic", CodeGenOptions::LocalDynamicTLSModel) 424 .Case("initial-exec", CodeGenOptions::InitialExecTLSModel) 425 .Case("local-exec", CodeGenOptions::LocalExecTLSModel) 426 .Default(~0U); 427 if (Model == ~0U) { 428 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Name; 429 Success = false; 430 } else { 431 Opts.setDefaultTLSModel(static_cast<CodeGenOptions::TLSModel>(Model)); 432 } 433 } 434 435 if (Arg *A = Args.getLastArg(OPT_ffp_contract)) { 436 StringRef Val = A->getValue(); 437 if (Val == "fast") 438 Opts.setFPContractMode(CodeGenOptions::FPC_Fast); 439 else if (Val == "on") 440 Opts.setFPContractMode(CodeGenOptions::FPC_On); 441 else if (Val == "off") 442 Opts.setFPContractMode(CodeGenOptions::FPC_Off); 443 else 444 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Val; 445 } 446 447 return Success; 448 } 449 450 static void ParseDependencyOutputArgs(DependencyOutputOptions &Opts, 451 ArgList &Args) { 452 using namespace options; 453 Opts.OutputFile = Args.getLastArgValue(OPT_dependency_file); 454 Opts.Targets = Args.getAllArgValues(OPT_MT); 455 Opts.IncludeSystemHeaders = Args.hasArg(OPT_sys_header_deps); 456 Opts.UsePhonyTargets = Args.hasArg(OPT_MP); 457 Opts.ShowHeaderIncludes = Args.hasArg(OPT_H); 458 Opts.HeaderIncludeOutputFile = Args.getLastArgValue(OPT_header_include_file); 459 Opts.AddMissingHeaderDeps = Args.hasArg(OPT_MG); 460 Opts.DOTOutputFile = Args.getLastArgValue(OPT_dependency_dot); 461 } 462 463 bool clang::ParseDiagnosticArgs(DiagnosticOptions &Opts, ArgList &Args, 464 DiagnosticsEngine *Diags) { 465 using namespace options; 466 bool Success = true; 467 468 Opts.DiagnosticLogFile = Args.getLastArgValue(OPT_diagnostic_log_file); 469 Opts.DiagnosticSerializationFile = 470 Args.getLastArgValue(OPT_diagnostic_serialized_file); 471 Opts.IgnoreWarnings = Args.hasArg(OPT_w); 472 Opts.NoRewriteMacros = Args.hasArg(OPT_Wno_rewrite_macros); 473 Opts.Pedantic = Args.hasArg(OPT_pedantic); 474 Opts.PedanticErrors = Args.hasArg(OPT_pedantic_errors); 475 Opts.ShowCarets = !Args.hasArg(OPT_fno_caret_diagnostics); 476 Opts.ShowColors = Args.hasArg(OPT_fcolor_diagnostics); 477 Opts.ShowColumn = Args.hasFlag(OPT_fshow_column, 478 OPT_fno_show_column, 479 /*Default=*/true); 480 Opts.ShowFixits = !Args.hasArg(OPT_fno_diagnostics_fixit_info); 481 Opts.ShowLocation = !Args.hasArg(OPT_fno_show_source_location); 482 Opts.ShowOptionNames = Args.hasArg(OPT_fdiagnostics_show_option); 483 484 // Default behavior is to not to show note include stacks. 485 Opts.ShowNoteIncludeStack = false; 486 if (Arg *A = Args.getLastArg(OPT_fdiagnostics_show_note_include_stack, 487 OPT_fno_diagnostics_show_note_include_stack)) 488 if (A->getOption().matches(OPT_fdiagnostics_show_note_include_stack)) 489 Opts.ShowNoteIncludeStack = true; 490 491 StringRef ShowOverloads = 492 Args.getLastArgValue(OPT_fshow_overloads_EQ, "all"); 493 if (ShowOverloads == "best") 494 Opts.setShowOverloads(Ovl_Best); 495 else if (ShowOverloads == "all") 496 Opts.setShowOverloads(Ovl_All); 497 else { 498 Success = false; 499 if (Diags) 500 Diags->Report(diag::err_drv_invalid_value) 501 << Args.getLastArg(OPT_fshow_overloads_EQ)->getAsString(Args) 502 << ShowOverloads; 503 } 504 505 StringRef ShowCategory = 506 Args.getLastArgValue(OPT_fdiagnostics_show_category, "none"); 507 if (ShowCategory == "none") 508 Opts.ShowCategories = 0; 509 else if (ShowCategory == "id") 510 Opts.ShowCategories = 1; 511 else if (ShowCategory == "name") 512 Opts.ShowCategories = 2; 513 else { 514 Success = false; 515 if (Diags) 516 Diags->Report(diag::err_drv_invalid_value) 517 << Args.getLastArg(OPT_fdiagnostics_show_category)->getAsString(Args) 518 << ShowCategory; 519 } 520 521 StringRef Format = 522 Args.getLastArgValue(OPT_fdiagnostics_format, "clang"); 523 if (Format == "clang") 524 Opts.setFormat(DiagnosticOptions::Clang); 525 else if (Format == "msvc") 526 Opts.setFormat(DiagnosticOptions::Msvc); 527 else if (Format == "vi") 528 Opts.setFormat(DiagnosticOptions::Vi); 529 else { 530 Success = false; 531 if (Diags) 532 Diags->Report(diag::err_drv_invalid_value) 533 << Args.getLastArg(OPT_fdiagnostics_format)->getAsString(Args) 534 << Format; 535 } 536 537 Opts.ShowSourceRanges = Args.hasArg(OPT_fdiagnostics_print_source_range_info); 538 Opts.ShowParseableFixits = Args.hasArg(OPT_fdiagnostics_parseable_fixits); 539 Opts.ShowPresumedLoc = !Args.hasArg(OPT_fno_diagnostics_use_presumed_location); 540 Opts.VerifyDiagnostics = Args.hasArg(OPT_verify); 541 Opts.ElideType = !Args.hasArg(OPT_fno_elide_type); 542 Opts.ShowTemplateTree = Args.hasArg(OPT_fdiagnostics_show_template_tree); 543 Opts.ErrorLimit = Args.getLastArgIntValue(OPT_ferror_limit, 0, Diags); 544 Opts.MacroBacktraceLimit 545 = Args.getLastArgIntValue(OPT_fmacro_backtrace_limit, 546 DiagnosticOptions::DefaultMacroBacktraceLimit, Diags); 547 Opts.TemplateBacktraceLimit 548 = Args.getLastArgIntValue(OPT_ftemplate_backtrace_limit, 549 DiagnosticOptions::DefaultTemplateBacktraceLimit, 550 Diags); 551 Opts.ConstexprBacktraceLimit 552 = Args.getLastArgIntValue(OPT_fconstexpr_backtrace_limit, 553 DiagnosticOptions::DefaultConstexprBacktraceLimit, 554 Diags); 555 Opts.TabStop = Args.getLastArgIntValue(OPT_ftabstop, 556 DiagnosticOptions::DefaultTabStop, Diags); 557 if (Opts.TabStop == 0 || Opts.TabStop > DiagnosticOptions::MaxTabStop) { 558 Opts.TabStop = DiagnosticOptions::DefaultTabStop; 559 if (Diags) 560 Diags->Report(diag::warn_ignoring_ftabstop_value) 561 << Opts.TabStop << DiagnosticOptions::DefaultTabStop; 562 } 563 Opts.MessageLength = Args.getLastArgIntValue(OPT_fmessage_length, 0, Diags); 564 addWarningArgs(Args, Opts.Warnings); 565 566 return Success; 567 } 568 569 static void ParseFileSystemArgs(FileSystemOptions &Opts, ArgList &Args) { 570 Opts.WorkingDir = Args.getLastArgValue(OPT_working_directory); 571 } 572 573 static InputKind ParseFrontendArgs(FrontendOptions &Opts, ArgList &Args, 574 DiagnosticsEngine &Diags) { 575 using namespace options; 576 Opts.ProgramAction = frontend::ParseSyntaxOnly; 577 if (const Arg *A = Args.getLastArg(OPT_Action_Group)) { 578 switch (A->getOption().getID()) { 579 default: 580 llvm_unreachable("Invalid option in group!"); 581 case OPT_ast_list: 582 Opts.ProgramAction = frontend::ASTDeclList; break; 583 case OPT_ast_dump: 584 Opts.ProgramAction = frontend::ASTDump; break; 585 case OPT_ast_dump_xml: 586 Opts.ProgramAction = frontend::ASTDumpXML; break; 587 case OPT_ast_print: 588 Opts.ProgramAction = frontend::ASTPrint; break; 589 case OPT_ast_view: 590 Opts.ProgramAction = frontend::ASTView; break; 591 case OPT_dump_raw_tokens: 592 Opts.ProgramAction = frontend::DumpRawTokens; break; 593 case OPT_dump_tokens: 594 Opts.ProgramAction = frontend::DumpTokens; break; 595 case OPT_S: 596 Opts.ProgramAction = frontend::EmitAssembly; break; 597 case OPT_emit_llvm_bc: 598 Opts.ProgramAction = frontend::EmitBC; break; 599 case OPT_emit_html: 600 Opts.ProgramAction = frontend::EmitHTML; break; 601 case OPT_emit_llvm: 602 Opts.ProgramAction = frontend::EmitLLVM; break; 603 case OPT_emit_llvm_only: 604 Opts.ProgramAction = frontend::EmitLLVMOnly; break; 605 case OPT_emit_codegen_only: 606 Opts.ProgramAction = frontend::EmitCodeGenOnly; break; 607 case OPT_emit_obj: 608 Opts.ProgramAction = frontend::EmitObj; break; 609 case OPT_fixit_EQ: 610 Opts.FixItSuffix = A->getValue(); 611 // fall-through! 612 case OPT_fixit: 613 Opts.ProgramAction = frontend::FixIt; break; 614 case OPT_emit_module: 615 Opts.ProgramAction = frontend::GenerateModule; break; 616 case OPT_emit_pch: 617 Opts.ProgramAction = frontend::GeneratePCH; break; 618 case OPT_emit_pth: 619 Opts.ProgramAction = frontend::GeneratePTH; break; 620 case OPT_init_only: 621 Opts.ProgramAction = frontend::InitOnly; break; 622 case OPT_fsyntax_only: 623 Opts.ProgramAction = frontend::ParseSyntaxOnly; break; 624 case OPT_print_decl_contexts: 625 Opts.ProgramAction = frontend::PrintDeclContext; break; 626 case OPT_print_preamble: 627 Opts.ProgramAction = frontend::PrintPreamble; break; 628 case OPT_E: 629 Opts.ProgramAction = frontend::PrintPreprocessedInput; break; 630 case OPT_rewrite_macros: 631 Opts.ProgramAction = frontend::RewriteMacros; break; 632 case OPT_rewrite_objc: 633 Opts.ProgramAction = frontend::RewriteObjC; break; 634 case OPT_rewrite_test: 635 Opts.ProgramAction = frontend::RewriteTest; break; 636 case OPT_analyze: 637 Opts.ProgramAction = frontend::RunAnalysis; break; 638 case OPT_migrate: 639 Opts.ProgramAction = frontend::MigrateSource; break; 640 case OPT_Eonly: 641 Opts.ProgramAction = frontend::RunPreprocessorOnly; break; 642 } 643 } 644 645 if (const Arg* A = Args.getLastArg(OPT_plugin)) { 646 Opts.Plugins.push_back(A->getValue(0)); 647 Opts.ProgramAction = frontend::PluginAction; 648 Opts.ActionName = A->getValue(); 649 650 for (arg_iterator it = Args.filtered_begin(OPT_plugin_arg), 651 end = Args.filtered_end(); it != end; ++it) { 652 if ((*it)->getValue(0) == Opts.ActionName) 653 Opts.PluginArgs.push_back((*it)->getValue(1)); 654 } 655 } 656 657 Opts.AddPluginActions = Args.getAllArgValues(OPT_add_plugin); 658 Opts.AddPluginArgs.resize(Opts.AddPluginActions.size()); 659 for (int i = 0, e = Opts.AddPluginActions.size(); i != e; ++i) { 660 for (arg_iterator it = Args.filtered_begin(OPT_plugin_arg), 661 end = Args.filtered_end(); it != end; ++it) { 662 if ((*it)->getValue(0) == Opts.AddPluginActions[i]) 663 Opts.AddPluginArgs[i].push_back((*it)->getValue(1)); 664 } 665 } 666 667 if (const Arg *A = Args.getLastArg(OPT_code_completion_at)) { 668 Opts.CodeCompletionAt = 669 ParsedSourceLocation::FromString(A->getValue()); 670 if (Opts.CodeCompletionAt.FileName.empty()) 671 Diags.Report(diag::err_drv_invalid_value) 672 << A->getAsString(Args) << A->getValue(); 673 } 674 Opts.DisableFree = Args.hasArg(OPT_disable_free); 675 676 Opts.OutputFile = Args.getLastArgValue(OPT_o); 677 Opts.Plugins = Args.getAllArgValues(OPT_load); 678 Opts.RelocatablePCH = Args.hasArg(OPT_relocatable_pch); 679 Opts.ShowHelp = Args.hasArg(OPT_help); 680 Opts.ShowStats = Args.hasArg(OPT_print_stats); 681 Opts.ShowTimers = Args.hasArg(OPT_ftime_report); 682 Opts.ShowVersion = Args.hasArg(OPT_version); 683 Opts.ASTMergeFiles = Args.getAllArgValues(OPT_ast_merge); 684 Opts.LLVMArgs = Args.getAllArgValues(OPT_mllvm); 685 Opts.FixWhatYouCan = Args.hasArg(OPT_fix_what_you_can); 686 Opts.FixOnlyWarnings = Args.hasArg(OPT_fix_only_warnings); 687 Opts.FixAndRecompile = Args.hasArg(OPT_fixit_recompile); 688 Opts.FixToTemporaries = Args.hasArg(OPT_fixit_to_temp); 689 Opts.ASTDumpFilter = Args.getLastArgValue(OPT_ast_dump_filter); 690 Opts.UseGlobalModuleIndex = !Args.hasArg(OPT_fno_modules_global_index); 691 Opts.GenerateGlobalModuleIndex = Opts.UseGlobalModuleIndex; 692 693 Opts.CodeCompleteOpts.IncludeMacros 694 = Args.hasArg(OPT_code_completion_macros); 695 Opts.CodeCompleteOpts.IncludeCodePatterns 696 = Args.hasArg(OPT_code_completion_patterns); 697 Opts.CodeCompleteOpts.IncludeGlobals 698 = !Args.hasArg(OPT_no_code_completion_globals); 699 Opts.CodeCompleteOpts.IncludeBriefComments 700 = Args.hasArg(OPT_code_completion_brief_comments); 701 702 Opts.OverrideRecordLayoutsFile 703 = Args.getLastArgValue(OPT_foverride_record_layout_EQ); 704 if (const Arg *A = Args.getLastArg(OPT_arcmt_check, 705 OPT_arcmt_modify, 706 OPT_arcmt_migrate)) { 707 switch (A->getOption().getID()) { 708 default: 709 llvm_unreachable("missed a case"); 710 case OPT_arcmt_check: 711 Opts.ARCMTAction = FrontendOptions::ARCMT_Check; 712 break; 713 case OPT_arcmt_modify: 714 Opts.ARCMTAction = FrontendOptions::ARCMT_Modify; 715 break; 716 case OPT_arcmt_migrate: 717 Opts.ARCMTAction = FrontendOptions::ARCMT_Migrate; 718 break; 719 } 720 } 721 Opts.MTMigrateDir = Args.getLastArgValue(OPT_mt_migrate_directory); 722 Opts.ARCMTMigrateReportOut 723 = Args.getLastArgValue(OPT_arcmt_migrate_report_output); 724 Opts.ARCMTMigrateEmitARCErrors 725 = Args.hasArg(OPT_arcmt_migrate_emit_arc_errors); 726 727 if (Args.hasArg(OPT_objcmt_migrate_literals)) 728 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_Literals; 729 if (Args.hasArg(OPT_objcmt_migrate_subscripting)) 730 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_Subscripting; 731 732 if (Opts.ARCMTAction != FrontendOptions::ARCMT_None && 733 Opts.ObjCMTAction != FrontendOptions::ObjCMT_None) { 734 Diags.Report(diag::err_drv_argument_not_allowed_with) 735 << "ARC migration" << "ObjC migration"; 736 } 737 738 InputKind DashX = IK_None; 739 if (const Arg *A = Args.getLastArg(OPT_x)) { 740 DashX = llvm::StringSwitch<InputKind>(A->getValue()) 741 .Case("c", IK_C) 742 .Case("cl", IK_OpenCL) 743 .Case("cuda", IK_CUDA) 744 .Case("c++", IK_CXX) 745 .Case("objective-c", IK_ObjC) 746 .Case("objective-c++", IK_ObjCXX) 747 .Case("cpp-output", IK_PreprocessedC) 748 .Case("assembler-with-cpp", IK_Asm) 749 .Case("c++-cpp-output", IK_PreprocessedCXX) 750 .Case("objective-c-cpp-output", IK_PreprocessedObjC) 751 .Case("objc-cpp-output", IK_PreprocessedObjC) 752 .Case("objective-c++-cpp-output", IK_PreprocessedObjCXX) 753 .Case("objc++-cpp-output", IK_PreprocessedObjCXX) 754 .Case("c-header", IK_C) 755 .Case("cl-header", IK_OpenCL) 756 .Case("objective-c-header", IK_ObjC) 757 .Case("c++-header", IK_CXX) 758 .Case("objective-c++-header", IK_ObjCXX) 759 .Case("ast", IK_AST) 760 .Case("ir", IK_LLVM_IR) 761 .Default(IK_None); 762 if (DashX == IK_None) 763 Diags.Report(diag::err_drv_invalid_value) 764 << A->getAsString(Args) << A->getValue(); 765 } 766 767 // '-' is the default input if none is given. 768 std::vector<std::string> Inputs = Args.getAllArgValues(OPT_INPUT); 769 Opts.Inputs.clear(); 770 if (Inputs.empty()) 771 Inputs.push_back("-"); 772 for (unsigned i = 0, e = Inputs.size(); i != e; ++i) { 773 InputKind IK = DashX; 774 if (IK == IK_None) { 775 IK = FrontendOptions::getInputKindForExtension( 776 StringRef(Inputs[i]).rsplit('.').second); 777 // FIXME: Remove this hack. 778 if (i == 0) 779 DashX = IK; 780 } 781 Opts.Inputs.push_back(FrontendInputFile(Inputs[i], IK)); 782 } 783 784 return DashX; 785 } 786 787 std::string CompilerInvocation::GetResourcesPath(const char *Argv0, 788 void *MainAddr) { 789 llvm::sys::Path P = llvm::sys::Path::GetMainExecutable(Argv0, MainAddr); 790 791 if (!P.isEmpty()) { 792 P.eraseComponent(); // Remove /clang from foo/bin/clang 793 P.eraseComponent(); // Remove /bin from foo/bin 794 795 // Get foo/lib/clang/<version>/include 796 P.appendComponent("lib"); 797 P.appendComponent("clang"); 798 P.appendComponent(CLANG_VERSION_STRING); 799 } 800 801 return P.str(); 802 } 803 804 static void ParseHeaderSearchArgs(HeaderSearchOptions &Opts, ArgList &Args) { 805 using namespace options; 806 Opts.Sysroot = Args.getLastArgValue(OPT_isysroot, "/"); 807 Opts.Verbose = Args.hasArg(OPT_v); 808 Opts.UseBuiltinIncludes = !Args.hasArg(OPT_nobuiltininc); 809 Opts.UseStandardSystemIncludes = !Args.hasArg(OPT_nostdsysteminc); 810 Opts.UseStandardCXXIncludes = !Args.hasArg(OPT_nostdincxx); 811 if (const Arg *A = Args.getLastArg(OPT_stdlib_EQ)) 812 Opts.UseLibcxx = (strcmp(A->getValue(), "libc++") == 0); 813 Opts.ResourceDir = Args.getLastArgValue(OPT_resource_dir); 814 Opts.ModuleCachePath = Args.getLastArgValue(OPT_fmodule_cache_path); 815 Opts.DisableModuleHash = Args.hasArg(OPT_fdisable_module_hash); 816 817 // Add -I..., -F..., and -index-header-map options in order. 818 bool IsIndexHeaderMap = false; 819 for (arg_iterator it = Args.filtered_begin(OPT_I, OPT_F, 820 OPT_index_header_map), 821 ie = Args.filtered_end(); it != ie; ++it) { 822 if ((*it)->getOption().matches(OPT_index_header_map)) { 823 // -index-header-map applies to the next -I or -F. 824 IsIndexHeaderMap = true; 825 continue; 826 } 827 828 frontend::IncludeDirGroup Group 829 = IsIndexHeaderMap? frontend::IndexHeaderMap : frontend::Angled; 830 831 Opts.AddPath((*it)->getValue(), Group, 832 /*IsFramework=*/ (*it)->getOption().matches(OPT_F), true); 833 IsIndexHeaderMap = false; 834 } 835 836 // Add -iprefix/-iwithprefix/-iwithprefixbefore options. 837 StringRef Prefix = ""; // FIXME: This isn't the correct default prefix. 838 for (arg_iterator it = Args.filtered_begin(OPT_iprefix, OPT_iwithprefix, 839 OPT_iwithprefixbefore), 840 ie = Args.filtered_end(); it != ie; ++it) { 841 const Arg *A = *it; 842 if (A->getOption().matches(OPT_iprefix)) 843 Prefix = A->getValue(); 844 else if (A->getOption().matches(OPT_iwithprefix)) 845 Opts.AddPath(Prefix.str() + A->getValue(), 846 frontend::After, false, true); 847 else 848 Opts.AddPath(Prefix.str() + A->getValue(), 849 frontend::Angled, false, true); 850 } 851 852 for (arg_iterator it = Args.filtered_begin(OPT_idirafter), 853 ie = Args.filtered_end(); it != ie; ++it) 854 Opts.AddPath((*it)->getValue(), frontend::After, false, true); 855 for (arg_iterator it = Args.filtered_begin(OPT_iquote), 856 ie = Args.filtered_end(); it != ie; ++it) 857 Opts.AddPath((*it)->getValue(), frontend::Quoted, false, true); 858 for (arg_iterator it = Args.filtered_begin(OPT_isystem, 859 OPT_iwithsysroot), ie = Args.filtered_end(); it != ie; ++it) 860 Opts.AddPath((*it)->getValue(), frontend::System, false, 861 !(*it)->getOption().matches(OPT_iwithsysroot)); 862 for (arg_iterator it = Args.filtered_begin(OPT_iframework), 863 ie = Args.filtered_end(); it != ie; ++it) 864 Opts.AddPath((*it)->getValue(), frontend::System, true, true); 865 866 // Add the paths for the various language specific isystem flags. 867 for (arg_iterator it = Args.filtered_begin(OPT_c_isystem), 868 ie = Args.filtered_end(); it != ie; ++it) 869 Opts.AddPath((*it)->getValue(), frontend::CSystem, false, true); 870 for (arg_iterator it = Args.filtered_begin(OPT_cxx_isystem), 871 ie = Args.filtered_end(); it != ie; ++it) 872 Opts.AddPath((*it)->getValue(), frontend::CXXSystem, false, true); 873 for (arg_iterator it = Args.filtered_begin(OPT_objc_isystem), 874 ie = Args.filtered_end(); it != ie; ++it) 875 Opts.AddPath((*it)->getValue(), frontend::ObjCSystem, false,true); 876 for (arg_iterator it = Args.filtered_begin(OPT_objcxx_isystem), 877 ie = Args.filtered_end(); it != ie; ++it) 878 Opts.AddPath((*it)->getValue(), frontend::ObjCXXSystem, false, true); 879 880 // Add the internal paths from a driver that detects standard include paths. 881 for (arg_iterator I = Args.filtered_begin(OPT_internal_isystem, 882 OPT_internal_externc_isystem), 883 E = Args.filtered_end(); 884 I != E; ++I) { 885 frontend::IncludeDirGroup Group = frontend::System; 886 if ((*I)->getOption().matches(OPT_internal_externc_isystem)) 887 Group = frontend::ExternCSystem; 888 Opts.AddPath((*I)->getValue(), Group, false, true); 889 } 890 891 // Add the path prefixes which are implicitly treated as being system headers. 892 for (arg_iterator I = Args.filtered_begin(OPT_isystem_prefix, 893 OPT_ino_system_prefix), 894 E = Args.filtered_end(); 895 I != E; ++I) 896 Opts.AddSystemHeaderPrefix((*I)->getValue(), 897 (*I)->getOption().matches(OPT_isystem_prefix)); 898 } 899 900 void CompilerInvocation::setLangDefaults(LangOptions &Opts, InputKind IK, 901 LangStandard::Kind LangStd) { 902 // Set some properties which depend solely on the input kind; it would be nice 903 // to move these to the language standard, and have the driver resolve the 904 // input kind + language standard. 905 if (IK == IK_Asm) { 906 Opts.AsmPreprocessor = 1; 907 } else if (IK == IK_ObjC || 908 IK == IK_ObjCXX || 909 IK == IK_PreprocessedObjC || 910 IK == IK_PreprocessedObjCXX) { 911 Opts.ObjC1 = Opts.ObjC2 = 1; 912 } 913 914 if (LangStd == LangStandard::lang_unspecified) { 915 // Based on the base language, pick one. 916 switch (IK) { 917 case IK_None: 918 case IK_AST: 919 case IK_LLVM_IR: 920 llvm_unreachable("Invalid input kind!"); 921 case IK_OpenCL: 922 LangStd = LangStandard::lang_opencl; 923 break; 924 case IK_CUDA: 925 LangStd = LangStandard::lang_cuda; 926 break; 927 case IK_Asm: 928 case IK_C: 929 case IK_PreprocessedC: 930 case IK_ObjC: 931 case IK_PreprocessedObjC: 932 LangStd = LangStandard::lang_gnu99; 933 break; 934 case IK_CXX: 935 case IK_PreprocessedCXX: 936 case IK_ObjCXX: 937 case IK_PreprocessedObjCXX: 938 LangStd = LangStandard::lang_gnucxx98; 939 break; 940 } 941 } 942 943 const LangStandard &Std = LangStandard::getLangStandardForKind(LangStd); 944 Opts.LineComment = Std.hasLineComments(); 945 Opts.C99 = Std.isC99(); 946 Opts.C11 = Std.isC11(); 947 Opts.CPlusPlus = Std.isCPlusPlus(); 948 Opts.CPlusPlus11 = Std.isCPlusPlus11(); 949 Opts.CPlusPlus1y = Std.isCPlusPlus1y(); 950 Opts.Digraphs = Std.hasDigraphs(); 951 Opts.GNUMode = Std.isGNUMode(); 952 Opts.GNUInline = !Std.isC99(); 953 Opts.HexFloats = Std.hasHexFloats(); 954 Opts.ImplicitInt = Std.hasImplicitInt(); 955 956 // Set OpenCL Version. 957 if (LangStd == LangStandard::lang_opencl) { 958 Opts.OpenCL = 1; 959 Opts.OpenCLVersion = 100; 960 } 961 else if (LangStd == LangStandard::lang_opencl11) { 962 Opts.OpenCL = 1; 963 Opts.OpenCLVersion = 110; 964 } 965 else if (LangStd == LangStandard::lang_opencl12) { 966 Opts.OpenCL = 1; 967 Opts.OpenCLVersion = 120; 968 } 969 970 // OpenCL has some additional defaults. 971 if (Opts.OpenCL) { 972 Opts.AltiVec = 0; 973 Opts.CXXOperatorNames = 1; 974 Opts.LaxVectorConversions = 0; 975 Opts.DefaultFPContract = 1; 976 Opts.NativeHalfType = 1; 977 } 978 979 if (LangStd == LangStandard::lang_cuda) 980 Opts.CUDA = 1; 981 982 // OpenCL and C++ both have bool, true, false keywords. 983 Opts.Bool = Opts.OpenCL || Opts.CPlusPlus; 984 985 // C++ has wchar_t keyword. 986 Opts.WChar = Opts.CPlusPlus; 987 988 Opts.GNUKeywords = Opts.GNUMode; 989 Opts.CXXOperatorNames = Opts.CPlusPlus; 990 991 // Mimicing gcc's behavior, trigraphs are only enabled if -trigraphs 992 // is specified, or -std is set to a conforming mode. 993 Opts.Trigraphs = !Opts.GNUMode; 994 995 Opts.DollarIdents = !Opts.AsmPreprocessor; 996 } 997 998 static void ParseLangArgs(LangOptions &Opts, ArgList &Args, InputKind IK, 999 DiagnosticsEngine &Diags) { 1000 // FIXME: Cleanup per-file based stuff. 1001 LangStandard::Kind LangStd = LangStandard::lang_unspecified; 1002 if (const Arg *A = Args.getLastArg(OPT_std_EQ)) { 1003 LangStd = llvm::StringSwitch<LangStandard::Kind>(A->getValue()) 1004 #define LANGSTANDARD(id, name, desc, features) \ 1005 .Case(name, LangStandard::lang_##id) 1006 #include "clang/Frontend/LangStandards.def" 1007 .Default(LangStandard::lang_unspecified); 1008 if (LangStd == LangStandard::lang_unspecified) 1009 Diags.Report(diag::err_drv_invalid_value) 1010 << A->getAsString(Args) << A->getValue(); 1011 else { 1012 // Valid standard, check to make sure language and standard are compatable. 1013 const LangStandard &Std = LangStandard::getLangStandardForKind(LangStd); 1014 switch (IK) { 1015 case IK_C: 1016 case IK_ObjC: 1017 case IK_PreprocessedC: 1018 case IK_PreprocessedObjC: 1019 if (!(Std.isC89() || Std.isC99())) 1020 Diags.Report(diag::err_drv_argument_not_allowed_with) 1021 << A->getAsString(Args) << "C/ObjC"; 1022 break; 1023 case IK_CXX: 1024 case IK_ObjCXX: 1025 case IK_PreprocessedCXX: 1026 case IK_PreprocessedObjCXX: 1027 if (!Std.isCPlusPlus()) 1028 Diags.Report(diag::err_drv_argument_not_allowed_with) 1029 << A->getAsString(Args) << "C++/ObjC++"; 1030 break; 1031 case IK_OpenCL: 1032 if (!Std.isC99()) 1033 Diags.Report(diag::err_drv_argument_not_allowed_with) 1034 << A->getAsString(Args) << "OpenCL"; 1035 break; 1036 case IK_CUDA: 1037 if (!Std.isCPlusPlus()) 1038 Diags.Report(diag::err_drv_argument_not_allowed_with) 1039 << A->getAsString(Args) << "CUDA"; 1040 break; 1041 default: 1042 break; 1043 } 1044 } 1045 } 1046 1047 // -cl-std only applies for OpenCL language standards. 1048 // Override the -std option in this case. 1049 if (const Arg *A = Args.getLastArg(OPT_cl_std_EQ)) { 1050 LangStandard::Kind OpenCLLangStd 1051 = llvm::StringSwitch<LangStandard::Kind>(A->getValue()) 1052 .Case("CL", LangStandard::lang_opencl) 1053 .Case("CL1.1", LangStandard::lang_opencl11) 1054 .Case("CL1.2", LangStandard::lang_opencl12) 1055 .Default(LangStandard::lang_unspecified); 1056 1057 if (OpenCLLangStd == LangStandard::lang_unspecified) { 1058 Diags.Report(diag::err_drv_invalid_value) 1059 << A->getAsString(Args) << A->getValue(); 1060 } 1061 else 1062 LangStd = OpenCLLangStd; 1063 } 1064 1065 CompilerInvocation::setLangDefaults(Opts, IK, LangStd); 1066 1067 // We abuse '-f[no-]gnu-keywords' to force overriding all GNU-extension 1068 // keywords. This behavior is provided by GCC's poorly named '-fasm' flag, 1069 // while a subset (the non-C++ GNU keywords) is provided by GCC's 1070 // '-fgnu-keywords'. Clang conflates the two for simplicity under the single 1071 // name, as it doesn't seem a useful distinction. 1072 Opts.GNUKeywords = Args.hasFlag(OPT_fgnu_keywords, OPT_fno_gnu_keywords, 1073 Opts.GNUKeywords); 1074 1075 if (Args.hasArg(OPT_fno_operator_names)) 1076 Opts.CXXOperatorNames = 0; 1077 1078 if (Opts.ObjC1) { 1079 if (Arg *arg = Args.getLastArg(OPT_fobjc_runtime_EQ)) { 1080 StringRef value = arg->getValue(); 1081 if (Opts.ObjCRuntime.tryParse(value)) 1082 Diags.Report(diag::err_drv_unknown_objc_runtime) << value; 1083 } 1084 1085 if (Args.hasArg(OPT_fobjc_gc_only)) 1086 Opts.setGC(LangOptions::GCOnly); 1087 else if (Args.hasArg(OPT_fobjc_gc)) 1088 Opts.setGC(LangOptions::HybridGC); 1089 else if (Args.hasArg(OPT_fobjc_arc)) { 1090 Opts.ObjCAutoRefCount = 1; 1091 if (!Opts.ObjCRuntime.allowsARC()) 1092 Diags.Report(diag::err_arc_unsupported_on_runtime); 1093 1094 // Only set ObjCARCWeak if ARC is enabled. 1095 if (Args.hasArg(OPT_fobjc_runtime_has_weak)) 1096 Opts.ObjCARCWeak = 1; 1097 else 1098 Opts.ObjCARCWeak = Opts.ObjCRuntime.allowsWeak(); 1099 } 1100 1101 if (Args.hasArg(OPT_fno_objc_infer_related_result_type)) 1102 Opts.ObjCInferRelatedResultType = 0; 1103 } 1104 1105 if (Args.hasArg(OPT_fgnu89_inline)) 1106 Opts.GNUInline = 1; 1107 1108 if (Args.hasArg(OPT_fapple_kext)) { 1109 if (!Opts.CPlusPlus) 1110 Diags.Report(diag::warn_c_kext); 1111 else 1112 Opts.AppleKext = 1; 1113 } 1114 1115 if (Args.hasArg(OPT_print_ivar_layout)) 1116 Opts.ObjCGCBitmapPrint = 1; 1117 if (Args.hasArg(OPT_fno_constant_cfstrings)) 1118 Opts.NoConstantCFStrings = 1; 1119 1120 if (Args.hasArg(OPT_faltivec)) 1121 Opts.AltiVec = 1; 1122 1123 if (Args.hasArg(OPT_pthread)) 1124 Opts.POSIXThreads = 1; 1125 1126 if (Args.hasArg(OPT_fdelayed_template_parsing)) 1127 Opts.DelayedTemplateParsing = 1; 1128 1129 StringRef Vis = Args.getLastArgValue(OPT_fvisibility, "default"); 1130 if (Vis == "default") 1131 Opts.setVisibilityMode(DefaultVisibility); 1132 else if (Vis == "hidden") 1133 Opts.setVisibilityMode(HiddenVisibility); 1134 else if (Vis == "protected") 1135 // FIXME: diagnose if target does not support protected visibility 1136 Opts.setVisibilityMode(ProtectedVisibility); 1137 else 1138 Diags.Report(diag::err_drv_invalid_value) 1139 << Args.getLastArg(OPT_fvisibility)->getAsString(Args) << Vis; 1140 1141 if (Args.hasArg(OPT_fvisibility_inlines_hidden)) 1142 Opts.InlineVisibilityHidden = 1; 1143 1144 if (Args.hasArg(OPT_ftrapv)) { 1145 Opts.setSignedOverflowBehavior(LangOptions::SOB_Trapping); 1146 // Set the handler, if one is specified. 1147 Opts.OverflowHandler = 1148 Args.getLastArgValue(OPT_ftrapv_handler); 1149 } 1150 else if (Args.hasArg(OPT_fwrapv)) 1151 Opts.setSignedOverflowBehavior(LangOptions::SOB_Defined); 1152 1153 if (Args.hasArg(OPT_trigraphs)) 1154 Opts.Trigraphs = 1; 1155 1156 Opts.DollarIdents = Args.hasFlag(OPT_fdollars_in_identifiers, 1157 OPT_fno_dollars_in_identifiers, 1158 Opts.DollarIdents); 1159 Opts.PascalStrings = Args.hasArg(OPT_fpascal_strings); 1160 Opts.MicrosoftExt 1161 = Args.hasArg(OPT_fms_extensions) || Args.hasArg(OPT_fms_compatibility); 1162 Opts.MicrosoftMode = Args.hasArg(OPT_fms_compatibility); 1163 Opts.AsmBlocks = Args.hasArg(OPT_fasm_blocks) || Opts.MicrosoftExt; 1164 Opts.MSCVersion = Args.getLastArgIntValue(OPT_fmsc_version, 0, Diags); 1165 Opts.Borland = Args.hasArg(OPT_fborland_extensions); 1166 Opts.WritableStrings = Args.hasArg(OPT_fwritable_strings); 1167 Opts.ConstStrings = Args.hasFlag(OPT_fconst_strings, OPT_fno_const_strings, 1168 Opts.ConstStrings); 1169 if (Args.hasArg(OPT_fno_lax_vector_conversions)) 1170 Opts.LaxVectorConversions = 0; 1171 if (Args.hasArg(OPT_fno_threadsafe_statics)) 1172 Opts.ThreadsafeStatics = 0; 1173 Opts.Exceptions = Args.hasArg(OPT_fexceptions); 1174 Opts.ObjCExceptions = Args.hasArg(OPT_fobjc_exceptions); 1175 Opts.CXXExceptions = Args.hasArg(OPT_fcxx_exceptions); 1176 Opts.SjLjExceptions = Args.hasArg(OPT_fsjlj_exceptions); 1177 Opts.TraditionalCPP = Args.hasArg(OPT_traditional_cpp); 1178 1179 Opts.RTTI = !Args.hasArg(OPT_fno_rtti); 1180 Opts.Blocks = Args.hasArg(OPT_fblocks); 1181 Opts.BlocksRuntimeOptional = Args.hasArg(OPT_fblocks_runtime_optional); 1182 Opts.Modules = Args.hasArg(OPT_fmodules); 1183 Opts.CharIsSigned = !Args.hasArg(OPT_fno_signed_char); 1184 Opts.WChar = Opts.CPlusPlus && !Args.hasArg(OPT_fno_wchar); 1185 Opts.ShortWChar = Args.hasArg(OPT_fshort_wchar); 1186 Opts.ShortEnums = Args.hasArg(OPT_fshort_enums); 1187 Opts.Freestanding = Args.hasArg(OPT_ffreestanding); 1188 Opts.NoBuiltin = Args.hasArg(OPT_fno_builtin) || Opts.Freestanding; 1189 Opts.AssumeSaneOperatorNew = !Args.hasArg(OPT_fno_assume_sane_operator_new); 1190 Opts.HeinousExtensions = Args.hasArg(OPT_fheinous_gnu_extensions); 1191 Opts.AccessControl = !Args.hasArg(OPT_fno_access_control); 1192 Opts.ElideConstructors = !Args.hasArg(OPT_fno_elide_constructors); 1193 Opts.MathErrno = Args.hasArg(OPT_fmath_errno); 1194 Opts.InstantiationDepth = Args.getLastArgIntValue(OPT_ftemplate_depth, 512, 1195 Diags); 1196 Opts.ConstexprCallDepth = Args.getLastArgIntValue(OPT_fconstexpr_depth, 512, 1197 Diags); 1198 Opts.DelayedTemplateParsing = Args.hasArg(OPT_fdelayed_template_parsing); 1199 Opts.NumLargeByValueCopy = Args.getLastArgIntValue(OPT_Wlarge_by_value_copy_EQ, 1200 0, Diags); 1201 Opts.MSBitfields = Args.hasArg(OPT_mms_bitfields); 1202 Opts.ObjCConstantStringClass = 1203 Args.getLastArgValue(OPT_fconstant_string_class); 1204 Opts.ObjCDefaultSynthProperties = 1205 Args.hasArg(OPT_fobjc_default_synthesize_properties); 1206 Opts.EncodeExtendedBlockSig = 1207 Args.hasArg(OPT_fencode_extended_block_signature); 1208 Opts.EmitAllDecls = Args.hasArg(OPT_femit_all_decls); 1209 Opts.PackStruct = Args.getLastArgIntValue(OPT_fpack_struct_EQ, 0, Diags); 1210 Opts.PICLevel = Args.getLastArgIntValue(OPT_pic_level, 0, Diags); 1211 Opts.PIELevel = Args.getLastArgIntValue(OPT_pie_level, 0, Diags); 1212 Opts.Static = Args.hasArg(OPT_static_define); 1213 Opts.DumpRecordLayoutsSimple = Args.hasArg(OPT_fdump_record_layouts_simple); 1214 Opts.DumpRecordLayouts = Opts.DumpRecordLayoutsSimple 1215 || Args.hasArg(OPT_fdump_record_layouts); 1216 Opts.DumpVTableLayouts = Args.hasArg(OPT_fdump_vtable_layouts); 1217 Opts.SpellChecking = !Args.hasArg(OPT_fno_spell_checking); 1218 Opts.NoBitFieldTypeAlign = Args.hasArg(OPT_fno_bitfield_type_align); 1219 Opts.SinglePrecisionConstants = Args.hasArg(OPT_cl_single_precision_constant); 1220 Opts.FastRelaxedMath = Args.hasArg(OPT_cl_fast_relaxed_math); 1221 Opts.MRTD = Args.hasArg(OPT_mrtd); 1222 Opts.HexagonQdsp6Compat = Args.hasArg(OPT_mqdsp6_compat); 1223 Opts.FakeAddressSpaceMap = Args.hasArg(OPT_ffake_address_space_map); 1224 Opts.ParseUnknownAnytype = Args.hasArg(OPT_funknown_anytype); 1225 Opts.DebuggerSupport = Args.hasArg(OPT_fdebugger_support); 1226 Opts.DebuggerCastResultToId = Args.hasArg(OPT_fdebugger_cast_result_to_id); 1227 Opts.DebuggerObjCLiteral = Args.hasArg(OPT_fdebugger_objc_literal); 1228 Opts.ApplePragmaPack = Args.hasArg(OPT_fapple_pragma_pack); 1229 Opts.CurrentModule = Args.getLastArgValue(OPT_fmodule_name); 1230 1231 // Check if -fopenmp is specified. 1232 Opts.OpenMP = Args.hasArg(OPT_fopenmp); 1233 1234 // Record whether the __DEPRECATED define was requested. 1235 Opts.Deprecated = Args.hasFlag(OPT_fdeprecated_macro, 1236 OPT_fno_deprecated_macro, 1237 Opts.Deprecated); 1238 1239 // FIXME: Eliminate this dependency. 1240 unsigned Opt = getOptimizationLevel(Args, IK, Diags), 1241 OptSize = getOptimizationLevelSize(Args, IK, Diags); 1242 Opts.Optimize = Opt != 0; 1243 Opts.OptimizeSize = OptSize != 0; 1244 1245 // This is the __NO_INLINE__ define, which just depends on things like the 1246 // optimization level and -fno-inline, not actually whether the backend has 1247 // inlining enabled. 1248 Opts.NoInlineDefine = !Opt || Args.hasArg(OPT_fno_inline); 1249 1250 Opts.FastMath = Args.hasArg(OPT_ffast_math); 1251 Opts.FiniteMathOnly = Args.hasArg(OPT_ffinite_math_only); 1252 1253 Opts.RetainCommentsFromSystemHeaders = 1254 Args.hasArg(OPT_fretain_comments_from_system_headers); 1255 1256 unsigned SSP = Args.getLastArgIntValue(OPT_stack_protector, 0, Diags); 1257 switch (SSP) { 1258 default: 1259 Diags.Report(diag::err_drv_invalid_value) 1260 << Args.getLastArg(OPT_stack_protector)->getAsString(Args) << SSP; 1261 break; 1262 case 0: Opts.setStackProtector(LangOptions::SSPOff); break; 1263 case 1: Opts.setStackProtector(LangOptions::SSPOn); break; 1264 case 2: Opts.setStackProtector(LangOptions::SSPReq); break; 1265 } 1266 1267 // Parse -fsanitize= arguments. 1268 std::vector<std::string> Sanitizers = Args.getAllArgValues(OPT_fsanitize_EQ); 1269 for (unsigned I = 0, N = Sanitizers.size(); I != N; ++I) { 1270 // Since the Opts.Sanitize* values are bitfields, it's a little tricky to 1271 // efficiently map string values to them. Perform the mapping indirectly: 1272 // convert strings to enumerated values, then switch over the enum to set 1273 // the right bitfield value. 1274 enum Sanitizer { 1275 #define SANITIZER(NAME, ID) \ 1276 ID, 1277 #include "clang/Basic/Sanitizers.def" 1278 Unknown 1279 }; 1280 switch (llvm::StringSwitch<unsigned>(Sanitizers[I]) 1281 #define SANITIZER(NAME, ID) \ 1282 .Case(NAME, ID) 1283 #include "clang/Basic/Sanitizers.def" 1284 .Default(Unknown)) { 1285 #define SANITIZER(NAME, ID) \ 1286 case ID: \ 1287 Opts.Sanitize.ID = true; \ 1288 break; 1289 #include "clang/Basic/Sanitizers.def" 1290 1291 case Unknown: 1292 Diags.Report(diag::err_drv_invalid_value) 1293 << "-fsanitize=" << Sanitizers[I]; 1294 break; 1295 } 1296 } 1297 } 1298 1299 static void ParsePreprocessorArgs(PreprocessorOptions &Opts, ArgList &Args, 1300 FileManager &FileMgr, 1301 DiagnosticsEngine &Diags) { 1302 using namespace options; 1303 Opts.ImplicitPCHInclude = Args.getLastArgValue(OPT_include_pch); 1304 Opts.ImplicitPTHInclude = Args.getLastArgValue(OPT_include_pth); 1305 if (const Arg *A = Args.getLastArg(OPT_token_cache)) 1306 Opts.TokenCache = A->getValue(); 1307 else 1308 Opts.TokenCache = Opts.ImplicitPTHInclude; 1309 Opts.UsePredefines = !Args.hasArg(OPT_undef); 1310 Opts.DetailedRecord = Args.hasArg(OPT_detailed_preprocessing_record); 1311 Opts.DisablePCHValidation = Args.hasArg(OPT_fno_validate_pch); 1312 1313 Opts.DumpDeserializedPCHDecls = Args.hasArg(OPT_dump_deserialized_pch_decls); 1314 for (arg_iterator it = Args.filtered_begin(OPT_error_on_deserialized_pch_decl), 1315 ie = Args.filtered_end(); it != ie; ++it) { 1316 const Arg *A = *it; 1317 Opts.DeserializedPCHDeclsToErrorOn.insert(A->getValue()); 1318 } 1319 1320 if (const Arg *A = Args.getLastArg(OPT_preamble_bytes_EQ)) { 1321 StringRef Value(A->getValue()); 1322 size_t Comma = Value.find(','); 1323 unsigned Bytes = 0; 1324 unsigned EndOfLine = 0; 1325 1326 if (Comma == StringRef::npos || 1327 Value.substr(0, Comma).getAsInteger(10, Bytes) || 1328 Value.substr(Comma + 1).getAsInteger(10, EndOfLine)) 1329 Diags.Report(diag::err_drv_preamble_format); 1330 else { 1331 Opts.PrecompiledPreambleBytes.first = Bytes; 1332 Opts.PrecompiledPreambleBytes.second = (EndOfLine != 0); 1333 } 1334 } 1335 1336 // Add macros from the command line. 1337 for (arg_iterator it = Args.filtered_begin(OPT_D, OPT_U), 1338 ie = Args.filtered_end(); it != ie; ++it) { 1339 if ((*it)->getOption().matches(OPT_D)) 1340 Opts.addMacroDef((*it)->getValue()); 1341 else 1342 Opts.addMacroUndef((*it)->getValue()); 1343 } 1344 1345 Opts.MacroIncludes = Args.getAllArgValues(OPT_imacros); 1346 1347 // Add the ordered list of -includes. 1348 for (arg_iterator it = Args.filtered_begin(OPT_include), 1349 ie = Args.filtered_end(); it != ie; ++it) { 1350 const Arg *A = *it; 1351 Opts.Includes.push_back(A->getValue()); 1352 } 1353 1354 for (arg_iterator it = Args.filtered_begin(OPT_chain_include), 1355 ie = Args.filtered_end(); it != ie; ++it) { 1356 const Arg *A = *it; 1357 Opts.ChainedIncludes.push_back(A->getValue()); 1358 } 1359 1360 // Include 'altivec.h' if -faltivec option present 1361 if (Args.hasArg(OPT_faltivec)) 1362 Opts.Includes.push_back("altivec.h"); 1363 1364 for (arg_iterator it = Args.filtered_begin(OPT_remap_file), 1365 ie = Args.filtered_end(); it != ie; ++it) { 1366 const Arg *A = *it; 1367 std::pair<StringRef,StringRef> Split = 1368 StringRef(A->getValue()).split(';'); 1369 1370 if (Split.second.empty()) { 1371 Diags.Report(diag::err_drv_invalid_remap_file) << A->getAsString(Args); 1372 continue; 1373 } 1374 1375 Opts.addRemappedFile(Split.first, Split.second); 1376 } 1377 1378 if (Arg *A = Args.getLastArg(OPT_fobjc_arc_cxxlib_EQ)) { 1379 StringRef Name = A->getValue(); 1380 unsigned Library = llvm::StringSwitch<unsigned>(Name) 1381 .Case("libc++", ARCXX_libcxx) 1382 .Case("libstdc++", ARCXX_libstdcxx) 1383 .Case("none", ARCXX_nolib) 1384 .Default(~0U); 1385 if (Library == ~0U) 1386 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Name; 1387 else 1388 Opts.ObjCXXARCStandardLibrary = (ObjCXXARCStandardLibraryKind)Library; 1389 } 1390 } 1391 1392 static void ParsePreprocessorOutputArgs(PreprocessorOutputOptions &Opts, 1393 ArgList &Args, 1394 frontend::ActionKind Action) { 1395 using namespace options; 1396 1397 switch (Action) { 1398 case frontend::ASTDeclList: 1399 case frontend::ASTDump: 1400 case frontend::ASTDumpXML: 1401 case frontend::ASTPrint: 1402 case frontend::ASTView: 1403 case frontend::EmitAssembly: 1404 case frontend::EmitBC: 1405 case frontend::EmitHTML: 1406 case frontend::EmitLLVM: 1407 case frontend::EmitLLVMOnly: 1408 case frontend::EmitCodeGenOnly: 1409 case frontend::EmitObj: 1410 case frontend::FixIt: 1411 case frontend::GenerateModule: 1412 case frontend::GeneratePCH: 1413 case frontend::GeneratePTH: 1414 case frontend::ParseSyntaxOnly: 1415 case frontend::PluginAction: 1416 case frontend::PrintDeclContext: 1417 case frontend::RewriteObjC: 1418 case frontend::RewriteTest: 1419 case frontend::RunAnalysis: 1420 case frontend::MigrateSource: 1421 Opts.ShowCPP = 0; 1422 break; 1423 1424 case frontend::DumpRawTokens: 1425 case frontend::DumpTokens: 1426 case frontend::InitOnly: 1427 case frontend::PrintPreamble: 1428 case frontend::PrintPreprocessedInput: 1429 case frontend::RewriteMacros: 1430 case frontend::RunPreprocessorOnly: 1431 Opts.ShowCPP = !Args.hasArg(OPT_dM); 1432 break; 1433 } 1434 1435 Opts.ShowComments = Args.hasArg(OPT_C); 1436 Opts.ShowLineMarkers = !Args.hasArg(OPT_P); 1437 Opts.ShowMacroComments = Args.hasArg(OPT_CC); 1438 Opts.ShowMacros = Args.hasArg(OPT_dM) || Args.hasArg(OPT_dD); 1439 Opts.RewriteIncludes = Args.hasArg(OPT_frewrite_includes); 1440 } 1441 1442 static void ParseTargetArgs(TargetOptions &Opts, ArgList &Args) { 1443 using namespace options; 1444 Opts.ABI = Args.getLastArgValue(OPT_target_abi); 1445 Opts.CXXABI = Args.getLastArgValue(OPT_cxx_abi); 1446 Opts.CPU = Args.getLastArgValue(OPT_target_cpu); 1447 Opts.FeaturesAsWritten = Args.getAllArgValues(OPT_target_feature); 1448 Opts.LinkerVersion = Args.getLastArgValue(OPT_target_linker_version); 1449 Opts.Triple = llvm::Triple::normalize(Args.getLastArgValue(OPT_triple)); 1450 1451 // Use the default target triple if unspecified. 1452 if (Opts.Triple.empty()) 1453 Opts.Triple = llvm::sys::getDefaultTargetTriple(); 1454 } 1455 1456 // 1457 1458 bool CompilerInvocation::CreateFromArgs(CompilerInvocation &Res, 1459 const char *const *ArgBegin, 1460 const char *const *ArgEnd, 1461 DiagnosticsEngine &Diags) { 1462 bool Success = true; 1463 1464 // Parse the arguments. 1465 OwningPtr<OptTable> Opts(createDriverOptTable()); 1466 unsigned MissingArgIndex, MissingArgCount; 1467 OwningPtr<InputArgList> Args( 1468 Opts->ParseArgs(ArgBegin, ArgEnd,MissingArgIndex, MissingArgCount)); 1469 1470 // Check for missing argument error. 1471 if (MissingArgCount) { 1472 Diags.Report(diag::err_drv_missing_argument) 1473 << Args->getArgString(MissingArgIndex) << MissingArgCount; 1474 Success = false; 1475 } 1476 1477 // Issue errors on unknown arguments. 1478 for (arg_iterator it = Args->filtered_begin(OPT_UNKNOWN), 1479 ie = Args->filtered_end(); it != ie; ++it) { 1480 Diags.Report(diag::err_drv_unknown_argument) << (*it)->getAsString(*Args); 1481 Success = false; 1482 } 1483 1484 // Issue errors on arguments that are not valid for CC1. 1485 for (ArgList::iterator I = Args->begin(), E = Args->end(); 1486 I != E; ++I) { 1487 if (!(*I)->getOption().hasFlag(options::CC1Option)) { 1488 Diags.Report(diag::err_drv_unknown_argument) << (*I)->getAsString(*Args); 1489 Success = false; 1490 } 1491 } 1492 1493 Success = ParseAnalyzerArgs(*Res.getAnalyzerOpts(), *Args, Diags) && Success; 1494 Success = ParseMigratorArgs(Res.getMigratorOpts(), *Args) && Success; 1495 ParseDependencyOutputArgs(Res.getDependencyOutputOpts(), *Args); 1496 Success = ParseDiagnosticArgs(Res.getDiagnosticOpts(), *Args, &Diags) 1497 && Success; 1498 ParseFileSystemArgs(Res.getFileSystemOpts(), *Args); 1499 // FIXME: We shouldn't have to pass the DashX option around here 1500 InputKind DashX = ParseFrontendArgs(Res.getFrontendOpts(), *Args, Diags); 1501 Success = ParseCodeGenArgs(Res.getCodeGenOpts(), *Args, DashX, Diags) 1502 && Success; 1503 ParseHeaderSearchArgs(Res.getHeaderSearchOpts(), *Args); 1504 if (DashX != IK_AST && DashX != IK_LLVM_IR) { 1505 ParseLangArgs(*Res.getLangOpts(), *Args, DashX, Diags); 1506 if (Res.getFrontendOpts().ProgramAction == frontend::RewriteObjC) 1507 Res.getLangOpts()->ObjCExceptions = 1; 1508 } 1509 // FIXME: ParsePreprocessorArgs uses the FileManager to read the contents of 1510 // PCH file and find the original header name. Remove the need to do that in 1511 // ParsePreprocessorArgs and remove the FileManager 1512 // parameters from the function and the "FileManager.h" #include. 1513 FileManager FileMgr(Res.getFileSystemOpts()); 1514 ParsePreprocessorArgs(Res.getPreprocessorOpts(), *Args, FileMgr, Diags); 1515 ParsePreprocessorOutputArgs(Res.getPreprocessorOutputOpts(), *Args, 1516 Res.getFrontendOpts().ProgramAction); 1517 ParseTargetArgs(Res.getTargetOpts(), *Args); 1518 1519 return Success; 1520 } 1521 1522 namespace { 1523 1524 class ModuleSignature { 1525 SmallVector<uint64_t, 16> Data; 1526 unsigned CurBit; 1527 uint64_t CurValue; 1528 1529 public: 1530 ModuleSignature() : CurBit(0), CurValue(0) { } 1531 1532 void add(uint64_t Value, unsigned Bits); 1533 void add(StringRef Value); 1534 void flush(); 1535 1536 llvm::APInt getAsInteger() const; 1537 }; 1538 } 1539 1540 void ModuleSignature::add(uint64_t Value, unsigned int NumBits) { 1541 CurValue |= Value << CurBit; 1542 if (CurBit + NumBits < 64) { 1543 CurBit += NumBits; 1544 return; 1545 } 1546 1547 // Add the current word. 1548 Data.push_back(CurValue); 1549 1550 if (CurBit) 1551 CurValue = Value >> (64-CurBit); 1552 else 1553 CurValue = 0; 1554 CurBit = (CurBit+NumBits) & 63; 1555 } 1556 1557 void ModuleSignature::flush() { 1558 if (CurBit == 0) 1559 return; 1560 1561 Data.push_back(CurValue); 1562 CurBit = 0; 1563 CurValue = 0; 1564 } 1565 1566 void ModuleSignature::add(StringRef Value) { 1567 for (StringRef::iterator I = Value.begin(), IEnd = Value.end(); I != IEnd;++I) 1568 add(*I, 8); 1569 } 1570 1571 llvm::APInt ModuleSignature::getAsInteger() const { 1572 return llvm::APInt(Data.size() * 64, Data); 1573 } 1574 1575 std::string CompilerInvocation::getModuleHash() const { 1576 using llvm::hash_code; 1577 using llvm::hash_value; 1578 using llvm::hash_combine; 1579 1580 // Start the signature with the compiler version. 1581 // FIXME: We'd rather use something more cryptographically sound than 1582 // CityHash, but this will do for now. 1583 hash_code code = hash_value(getClangFullRepositoryVersion()); 1584 1585 // Extend the signature with the language options 1586 #define LANGOPT(Name, Bits, Default, Description) \ 1587 code = hash_combine(code, LangOpts->Name); 1588 #define ENUM_LANGOPT(Name, Type, Bits, Default, Description) \ 1589 code = hash_combine(code, static_cast<unsigned>(LangOpts->get##Name())); 1590 #define BENIGN_LANGOPT(Name, Bits, Default, Description) 1591 #define BENIGN_ENUM_LANGOPT(Name, Type, Bits, Default, Description) 1592 #include "clang/Basic/LangOptions.def" 1593 1594 // Extend the signature with the target options. 1595 code = hash_combine(code, TargetOpts->Triple, TargetOpts->CPU, 1596 TargetOpts->ABI, TargetOpts->CXXABI, 1597 TargetOpts->LinkerVersion); 1598 for (unsigned i = 0, n = TargetOpts->FeaturesAsWritten.size(); i != n; ++i) 1599 code = hash_combine(code, TargetOpts->FeaturesAsWritten[i]); 1600 1601 // Extend the signature with preprocessor options. 1602 const PreprocessorOptions &ppOpts = getPreprocessorOpts(); 1603 code = hash_combine(code, ppOpts.UsePredefines, ppOpts.DetailedRecord); 1604 1605 std::vector<StringRef> MacroDefs; 1606 for (std::vector<std::pair<std::string, bool/*isUndef*/> >::const_iterator 1607 I = getPreprocessorOpts().Macros.begin(), 1608 IEnd = getPreprocessorOpts().Macros.end(); 1609 I != IEnd; ++I) { 1610 code = hash_combine(code, I->first, I->second); 1611 } 1612 1613 // Extend the signature with the sysroot. 1614 const HeaderSearchOptions &hsOpts = getHeaderSearchOpts(); 1615 code = hash_combine(code, hsOpts.Sysroot, hsOpts.UseBuiltinIncludes, 1616 hsOpts.UseStandardSystemIncludes, 1617 hsOpts.UseStandardCXXIncludes, 1618 hsOpts.UseLibcxx); 1619 1620 return llvm::APInt(64, code).toString(36, /*Signed=*/false); 1621 } 1622