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/Version.h" 13 #include "clang/Basic/FileManager.h" 14 #include "clang/Lex/HeaderSearchOptions.h" 15 #include "clang/Driver/Arg.h" 16 #include "clang/Driver/ArgList.h" 17 #include "clang/Driver/Options.h" 18 #include "clang/Driver/DriverDiagnostic.h" 19 #include "clang/Driver/OptTable.h" 20 #include "clang/Driver/Option.h" 21 #include "clang/Frontend/CompilerInvocation.h" 22 #include "clang/Frontend/LangStandard.h" 23 #include "clang/Serialization/ASTReader.h" 24 #include "llvm/ADT/Hashing.h" 25 #include "llvm/ADT/OwningPtr.h" 26 #include "llvm/ADT/SmallVector.h" 27 #include "llvm/ADT/StringExtras.h" 28 #include "llvm/ADT/StringSwitch.h" 29 #include "llvm/ADT/Triple.h" 30 #include "llvm/Support/ErrorHandling.h" 31 #include "llvm/Support/Host.h" 32 #include "llvm/Support/Path.h" 33 using namespace clang; 34 35 //===----------------------------------------------------------------------===// 36 // Initialization. 37 //===----------------------------------------------------------------------===// 38 39 CompilerInvocationBase::CompilerInvocationBase() 40 : LangOpts(new LangOptions()), TargetOpts(new TargetOptions()), 41 DiagnosticOpts(new DiagnosticOptions()), 42 HeaderSearchOpts(new HeaderSearchOptions()), 43 PreprocessorOpts(new PreprocessorOptions()) {} 44 45 CompilerInvocationBase::CompilerInvocationBase(const CompilerInvocationBase &X) 46 : RefCountedBase<CompilerInvocation>(), 47 LangOpts(new LangOptions(*X.getLangOpts())), 48 TargetOpts(new TargetOptions(X.getTargetOpts())), 49 DiagnosticOpts(new DiagnosticOptions(X.getDiagnosticOpts())), 50 HeaderSearchOpts(new HeaderSearchOptions(X.getHeaderSearchOpts())), 51 PreprocessorOpts(new PreprocessorOptions(X.getPreprocessorOpts())) {} 52 53 //===----------------------------------------------------------------------===// 54 // Deserialization (from args) 55 //===----------------------------------------------------------------------===// 56 57 using namespace clang::driver; 58 using namespace clang::driver::options; 59 60 // 61 62 static unsigned getOptimizationLevel(ArgList &Args, InputKind IK, 63 DiagnosticsEngine &Diags) { 64 unsigned DefaultOpt = 0; 65 if (IK == IK_OpenCL && !Args.hasArg(OPT_cl_opt_disable)) 66 DefaultOpt = 2; 67 68 if (Arg *A = Args.getLastArg(options::OPT_O_Group)) { 69 if (A->getOption().matches(options::OPT_O0)) 70 return 0; 71 72 assert (A->getOption().matches(options::OPT_O)); 73 74 llvm::StringRef S(A->getValue()); 75 if (S == "s" || S == "z" || S.empty()) 76 return 2; 77 78 return Args.getLastArgIntValue(OPT_O, DefaultOpt, Diags); 79 } 80 81 return DefaultOpt; 82 } 83 84 static unsigned getOptimizationLevelSize(ArgList &Args, InputKind IK, 85 DiagnosticsEngine &Diags) { 86 if (Arg *A = Args.getLastArg(options::OPT_O_Group)) { 87 if (A->getOption().matches(options::OPT_O)) { 88 switch (A->getValue()[0]) { 89 default: 90 return 0; 91 case 's': 92 return 1; 93 case 'z': 94 return 2; 95 } 96 } 97 } 98 return 0; 99 } 100 101 static void addWarningArgs(ArgList &Args, std::vector<std::string> &Warnings) { 102 for (arg_iterator I = Args.filtered_begin(OPT_W_Group), 103 E = Args.filtered_end(); I != E; ++I) { 104 Arg *A = *I; 105 // If the argument is a pure flag, add its name (minus the "W" at the beginning) 106 // to the warning list. Else, add its value (for the OPT_W case). 107 if (A->getOption().getKind() == Option::FlagClass) { 108 Warnings.push_back(A->getOption().getName().substr(1)); 109 } else { 110 for (unsigned Idx = 0, End = A->getNumValues(); 111 Idx < End; ++Idx) { 112 StringRef V = A->getValue(Idx); 113 // "-Wl," and such are not warning options. 114 // FIXME: Should be handled by putting these in separate flags. 115 if (V.startswith("l,") || V.startswith("a,") || V.startswith("p,")) 116 continue; 117 118 Warnings.push_back(V); 119 } 120 } 121 } 122 } 123 124 static bool ParseAnalyzerArgs(AnalyzerOptions &Opts, ArgList &Args, 125 DiagnosticsEngine &Diags) { 126 using namespace options; 127 bool Success = true; 128 if (Arg *A = Args.getLastArg(OPT_analyzer_store)) { 129 StringRef Name = A->getValue(); 130 AnalysisStores Value = llvm::StringSwitch<AnalysisStores>(Name) 131 #define ANALYSIS_STORE(NAME, CMDFLAG, DESC, CREATFN) \ 132 .Case(CMDFLAG, NAME##Model) 133 #include "clang/StaticAnalyzer/Core/Analyses.def" 134 .Default(NumStores); 135 if (Value == NumStores) { 136 Diags.Report(diag::err_drv_invalid_value) 137 << A->getAsString(Args) << Name; 138 Success = false; 139 } else { 140 Opts.AnalysisStoreOpt = Value; 141 } 142 } 143 144 if (Arg *A = Args.getLastArg(OPT_analyzer_constraints)) { 145 StringRef Name = A->getValue(); 146 AnalysisConstraints Value = llvm::StringSwitch<AnalysisConstraints>(Name) 147 #define ANALYSIS_CONSTRAINTS(NAME, CMDFLAG, DESC, CREATFN) \ 148 .Case(CMDFLAG, NAME##Model) 149 #include "clang/StaticAnalyzer/Core/Analyses.def" 150 .Default(NumConstraints); 151 if (Value == NumConstraints) { 152 Diags.Report(diag::err_drv_invalid_value) 153 << A->getAsString(Args) << Name; 154 Success = false; 155 } else { 156 Opts.AnalysisConstraintsOpt = Value; 157 } 158 } 159 160 if (Arg *A = Args.getLastArg(OPT_analyzer_output)) { 161 StringRef Name = A->getValue(); 162 AnalysisDiagClients Value = llvm::StringSwitch<AnalysisDiagClients>(Name) 163 #define ANALYSIS_DIAGNOSTICS(NAME, CMDFLAG, DESC, CREATFN, AUTOCREAT) \ 164 .Case(CMDFLAG, PD_##NAME) 165 #include "clang/StaticAnalyzer/Core/Analyses.def" 166 .Default(NUM_ANALYSIS_DIAG_CLIENTS); 167 if (Value == NUM_ANALYSIS_DIAG_CLIENTS) { 168 Diags.Report(diag::err_drv_invalid_value) 169 << A->getAsString(Args) << Name; 170 Success = false; 171 } else { 172 Opts.AnalysisDiagOpt = Value; 173 } 174 } 175 176 if (Arg *A = Args.getLastArg(OPT_analyzer_purge)) { 177 StringRef Name = A->getValue(); 178 AnalysisPurgeMode Value = llvm::StringSwitch<AnalysisPurgeMode>(Name) 179 #define ANALYSIS_PURGE(NAME, CMDFLAG, DESC) \ 180 .Case(CMDFLAG, NAME) 181 #include "clang/StaticAnalyzer/Core/Analyses.def" 182 .Default(NumPurgeModes); 183 if (Value == NumPurgeModes) { 184 Diags.Report(diag::err_drv_invalid_value) 185 << A->getAsString(Args) << Name; 186 Success = false; 187 } else { 188 Opts.AnalysisPurgeOpt = Value; 189 } 190 } 191 192 if (Arg *A = Args.getLastArg(OPT_analyzer_ipa)) { 193 StringRef Name = A->getValue(); 194 AnalysisIPAMode Value = llvm::StringSwitch<AnalysisIPAMode>(Name) 195 #define ANALYSIS_IPA(NAME, CMDFLAG, DESC) \ 196 .Case(CMDFLAG, NAME) 197 #include "clang/StaticAnalyzer/Core/Analyses.def" 198 .Default(NumIPAModes); 199 if (Value == NumIPAModes) { 200 Diags.Report(diag::err_drv_invalid_value) 201 << A->getAsString(Args) << Name; 202 Success = false; 203 } else { 204 Opts.IPAMode = Value; 205 } 206 } 207 208 if (Arg *A = Args.getLastArg(OPT_analyzer_inlining_mode)) { 209 StringRef Name = A->getValue(); 210 AnalysisInliningMode Value = llvm::StringSwitch<AnalysisInliningMode>(Name) 211 #define ANALYSIS_INLINING_MODE(NAME, CMDFLAG, DESC) \ 212 .Case(CMDFLAG, NAME) 213 #include "clang/StaticAnalyzer/Core/Analyses.def" 214 .Default(NumInliningModes); 215 if (Value == NumInliningModes) { 216 Diags.Report(diag::err_drv_invalid_value) 217 << A->getAsString(Args) << Name; 218 Success = false; 219 } else { 220 Opts.InliningMode = Value; 221 } 222 } 223 224 Opts.ShowCheckerHelp = Args.hasArg(OPT_analyzer_checker_help); 225 Opts.visualizeExplodedGraphWithGraphViz = 226 Args.hasArg(OPT_analyzer_viz_egraph_graphviz); 227 Opts.visualizeExplodedGraphWithUbiGraph = 228 Args.hasArg(OPT_analyzer_viz_egraph_ubigraph); 229 Opts.NoRetryExhausted = Args.hasArg(OPT_analyzer_disable_retry_exhausted); 230 Opts.AnalyzeAll = Args.hasArg(OPT_analyzer_opt_analyze_headers); 231 Opts.AnalyzerDisplayProgress = Args.hasArg(OPT_analyzer_display_progress); 232 Opts.AnalyzeNestedBlocks = 233 Args.hasArg(OPT_analyzer_opt_analyze_nested_blocks); 234 Opts.eagerlyAssumeBinOpBifurcation = Args.hasArg(OPT_analyzer_eagerly_assume); 235 Opts.AnalyzeSpecificFunction = Args.getLastArgValue(OPT_analyze_function); 236 Opts.UnoptimizedCFG = Args.hasArg(OPT_analysis_UnoptimizedCFG); 237 Opts.TrimGraph = Args.hasArg(OPT_trim_egraph); 238 Opts.MaxNodes = Args.getLastArgIntValue(OPT_analyzer_max_nodes, 150000,Diags); 239 Opts.maxBlockVisitOnPath = Args.getLastArgIntValue(OPT_analyzer_max_loop, 4, Diags); 240 Opts.PrintStats = Args.hasArg(OPT_analyzer_stats); 241 Opts.InlineMaxStackDepth = 242 Args.getLastArgIntValue(OPT_analyzer_inline_max_stack_depth, 243 Opts.InlineMaxStackDepth, Diags); 244 Opts.InlineMaxFunctionSize = 245 Args.getLastArgIntValue(OPT_analyzer_inline_max_function_size, 246 Opts.InlineMaxFunctionSize, Diags); 247 248 Opts.CheckersControlList.clear(); 249 for (arg_iterator it = Args.filtered_begin(OPT_analyzer_checker, 250 OPT_analyzer_disable_checker), 251 ie = Args.filtered_end(); it != ie; ++it) { 252 const Arg *A = *it; 253 A->claim(); 254 bool enable = (A->getOption().getID() == OPT_analyzer_checker); 255 // We can have a list of comma separated checker names, e.g: 256 // '-analyzer-checker=cocoa,unix' 257 StringRef checkerList = A->getValue(); 258 SmallVector<StringRef, 4> checkers; 259 checkerList.split(checkers, ","); 260 for (unsigned i = 0, e = checkers.size(); i != e; ++i) 261 Opts.CheckersControlList.push_back(std::make_pair(checkers[i], enable)); 262 } 263 264 // Go through the analyzer configuration options. 265 for (arg_iterator it = Args.filtered_begin(OPT_analyzer_config), 266 ie = Args.filtered_end(); it != ie; ++it) { 267 const Arg *A = *it; 268 A->claim(); 269 // We can have a list of comma separated config names, e.g: 270 // '-analyzer-config key1=val1,key2=val2' 271 StringRef configList = A->getValue(); 272 SmallVector<StringRef, 4> configVals; 273 configList.split(configVals, ","); 274 for (unsigned i = 0, e = configVals.size(); i != e; ++i) { 275 StringRef key, val; 276 llvm::tie(key, val) = configVals[i].split("="); 277 if (val.empty()) { 278 Diags.Report(SourceLocation(), 279 diag::err_analyzer_config_no_value) << configVals[i]; 280 Success = false; 281 break; 282 } 283 if (val.find('=') != StringRef::npos) { 284 Diags.Report(SourceLocation(), 285 diag::err_analyzer_config_multiple_values) 286 << configVals[i]; 287 Success = false; 288 break; 289 } 290 Opts.Config[key] = val; 291 } 292 } 293 294 return Success; 295 } 296 297 static bool ParseMigratorArgs(MigratorOptions &Opts, ArgList &Args) { 298 Opts.NoNSAllocReallocError = Args.hasArg(OPT_migrator_no_nsalloc_error); 299 Opts.NoFinalizeRemoval = Args.hasArg(OPT_migrator_no_finalize_removal); 300 return true; 301 } 302 303 static bool ParseCodeGenArgs(CodeGenOptions &Opts, ArgList &Args, InputKind IK, 304 DiagnosticsEngine &Diags) { 305 using namespace options; 306 bool Success = true; 307 308 unsigned OptLevel = getOptimizationLevel(Args, IK, Diags); 309 if (OptLevel > 3) { 310 Diags.Report(diag::err_drv_invalid_value) 311 << Args.getLastArg(OPT_O)->getAsString(Args) << OptLevel; 312 OptLevel = 3; 313 Success = false; 314 } 315 Opts.OptimizationLevel = OptLevel; 316 317 // We must always run at least the always inlining pass. 318 Opts.setInlining( 319 (Opts.OptimizationLevel > 1) ? CodeGenOptions::NormalInlining 320 : CodeGenOptions::OnlyAlwaysInlining); 321 // -fno-inline-functions overrides OptimizationLevel > 1. 322 Opts.NoInline = Args.hasArg(OPT_fno_inline); 323 Opts.setInlining(Args.hasArg(OPT_fno_inline_functions) ? 324 CodeGenOptions::OnlyAlwaysInlining : Opts.getInlining()); 325 326 if (Args.hasArg(OPT_gline_tables_only)) { 327 Opts.setDebugInfo(CodeGenOptions::DebugLineTablesOnly); 328 } else if (Args.hasArg(OPT_g_Flag)) { 329 if (Args.hasFlag(OPT_flimit_debug_info, OPT_fno_limit_debug_info, true)) 330 Opts.setDebugInfo(CodeGenOptions::LimitedDebugInfo); 331 else 332 Opts.setDebugInfo(CodeGenOptions::FullDebugInfo); 333 } 334 Opts.DebugColumnInfo = Args.hasArg(OPT_dwarf_column_info); 335 336 Opts.DisableLLVMOpts = Args.hasArg(OPT_disable_llvm_optzns); 337 Opts.DisableRedZone = Args.hasArg(OPT_disable_red_zone); 338 Opts.ForbidGuardVariables = Args.hasArg(OPT_fforbid_guard_variables); 339 Opts.UseRegisterSizedBitfieldAccess = Args.hasArg( 340 OPT_fuse_register_sized_bitfield_access); 341 Opts.RelaxedAliasing = Args.hasArg(OPT_relaxed_aliasing); 342 Opts.DwarfDebugFlags = Args.getLastArgValue(OPT_dwarf_debug_flags); 343 Opts.MergeAllConstants = !Args.hasArg(OPT_fno_merge_all_constants); 344 Opts.NoCommon = Args.hasArg(OPT_fno_common); 345 Opts.NoImplicitFloat = Args.hasArg(OPT_no_implicit_float); 346 Opts.OptimizeSize = getOptimizationLevelSize(Args, IK, Diags); 347 Opts.SimplifyLibCalls = !(Args.hasArg(OPT_fno_builtin) || 348 Args.hasArg(OPT_ffreestanding)); 349 Opts.UnrollLoops = Args.hasArg(OPT_funroll_loops) || 350 (Opts.OptimizationLevel > 1 && !Opts.OptimizeSize); 351 352 Opts.AsmVerbose = Args.hasArg(OPT_masm_verbose); 353 Opts.ObjCAutoRefCountExceptions = Args.hasArg(OPT_fobjc_arc_exceptions); 354 Opts.CUDAIsDevice = Args.hasArg(OPT_fcuda_is_device); 355 Opts.CXAAtExit = !Args.hasArg(OPT_fno_use_cxa_atexit); 356 Opts.CXXCtorDtorAliases = Args.hasArg(OPT_mconstructor_aliases); 357 Opts.CodeModel = Args.getLastArgValue(OPT_mcode_model); 358 Opts.DebugPass = Args.getLastArgValue(OPT_mdebug_pass); 359 Opts.DisableFPElim = Args.hasArg(OPT_mdisable_fp_elim); 360 Opts.DisableTailCalls = Args.hasArg(OPT_mdisable_tail_calls); 361 Opts.FloatABI = Args.getLastArgValue(OPT_mfloat_abi); 362 Opts.HiddenWeakVTables = Args.hasArg(OPT_fhidden_weak_vtables); 363 Opts.LessPreciseFPMAD = Args.hasArg(OPT_cl_mad_enable); 364 Opts.LimitFloatPrecision = Args.getLastArgValue(OPT_mlimit_float_precision); 365 Opts.NoInfsFPMath = (Args.hasArg(OPT_menable_no_infinities) || 366 Args.hasArg(OPT_cl_finite_math_only)|| 367 Args.hasArg(OPT_cl_fast_relaxed_math)); 368 Opts.NoNaNsFPMath = (Args.hasArg(OPT_menable_no_nans) || 369 Args.hasArg(OPT_cl_finite_math_only)|| 370 Args.hasArg(OPT_cl_fast_relaxed_math)); 371 Opts.NoZeroInitializedInBSS = Args.hasArg(OPT_mno_zero_initialized_in_bss); 372 Opts.BackendOptions = Args.getAllArgValues(OPT_backend_option); 373 Opts.NumRegisterParameters = Args.getLastArgIntValue(OPT_mregparm, 0, Diags); 374 Opts.NoGlobalMerge = Args.hasArg(OPT_mno_global_merge); 375 Opts.NoExecStack = Args.hasArg(OPT_mno_exec_stack); 376 Opts.RelaxAll = Args.hasArg(OPT_mrelax_all); 377 Opts.OmitLeafFramePointer = Args.hasArg(OPT_momit_leaf_frame_pointer); 378 Opts.SaveTempLabels = Args.hasArg(OPT_msave_temp_labels); 379 Opts.NoDwarf2CFIAsm = Args.hasArg(OPT_fno_dwarf2_cfi_asm); 380 Opts.NoDwarfDirectoryAsm = Args.hasArg(OPT_fno_dwarf_directory_asm); 381 Opts.SoftFloat = Args.hasArg(OPT_msoft_float); 382 Opts.StrictEnums = Args.hasArg(OPT_fstrict_enums); 383 Opts.UnsafeFPMath = Args.hasArg(OPT_menable_unsafe_fp_math) || 384 Args.hasArg(OPT_cl_unsafe_math_optimizations) || 385 Args.hasArg(OPT_cl_fast_relaxed_math); 386 Opts.UnwindTables = Args.hasArg(OPT_munwind_tables); 387 Opts.RelocationModel = Args.getLastArgValue(OPT_mrelocation_model, "pic"); 388 Opts.TrapFuncName = Args.getLastArgValue(OPT_ftrap_function_EQ); 389 Opts.UseInitArray = Args.hasArg(OPT_fuse_init_array); 390 391 Opts.FunctionSections = Args.hasArg(OPT_ffunction_sections); 392 Opts.DataSections = Args.hasArg(OPT_fdata_sections); 393 394 Opts.MainFileName = Args.getLastArgValue(OPT_main_file_name); 395 Opts.VerifyModule = !Args.hasArg(OPT_disable_llvm_verifier); 396 397 Opts.InstrumentFunctions = Args.hasArg(OPT_finstrument_functions); 398 Opts.InstrumentForProfiling = Args.hasArg(OPT_pg); 399 Opts.EmitGcovArcs = Args.hasArg(OPT_femit_coverage_data); 400 Opts.EmitGcovNotes = Args.hasArg(OPT_femit_coverage_notes); 401 Opts.EmitOpenCLArgMetadata = Args.hasArg(OPT_cl_kernel_arg_info); 402 Opts.CoverageFile = Args.getLastArgValue(OPT_coverage_file); 403 Opts.DebugCompilationDir = Args.getLastArgValue(OPT_fdebug_compilation_dir); 404 Opts.LinkBitcodeFile = Args.getLastArgValue(OPT_mlink_bitcode_file); 405 Opts.SSPBufferSize = 406 Args.getLastArgIntValue(OPT_stack_protector_buffer_size, 8, Diags); 407 Opts.StackRealignment = Args.hasArg(OPT_mstackrealign); 408 if (Arg *A = Args.getLastArg(OPT_mstack_alignment)) { 409 StringRef Val = A->getValue(); 410 unsigned StackAlignment = Opts.StackAlignment; 411 Val.getAsInteger(10, StackAlignment); 412 Opts.StackAlignment = StackAlignment; 413 } 414 415 if (Arg *A = Args.getLastArg(OPT_fobjc_dispatch_method_EQ)) { 416 StringRef Name = A->getValue(); 417 unsigned Method = llvm::StringSwitch<unsigned>(Name) 418 .Case("legacy", CodeGenOptions::Legacy) 419 .Case("non-legacy", CodeGenOptions::NonLegacy) 420 .Case("mixed", CodeGenOptions::Mixed) 421 .Default(~0U); 422 if (Method == ~0U) { 423 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Name; 424 Success = false; 425 } else { 426 Opts.setObjCDispatchMethod( 427 static_cast<CodeGenOptions::ObjCDispatchMethodKind>(Method)); 428 } 429 } 430 431 if (Arg *A = Args.getLastArg(OPT_ftlsmodel_EQ)) { 432 StringRef Name = A->getValue(); 433 unsigned Model = llvm::StringSwitch<unsigned>(Name) 434 .Case("global-dynamic", CodeGenOptions::GeneralDynamicTLSModel) 435 .Case("local-dynamic", CodeGenOptions::LocalDynamicTLSModel) 436 .Case("initial-exec", CodeGenOptions::InitialExecTLSModel) 437 .Case("local-exec", CodeGenOptions::LocalExecTLSModel) 438 .Default(~0U); 439 if (Model == ~0U) { 440 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Name; 441 Success = false; 442 } else { 443 Opts.setDefaultTLSModel(static_cast<CodeGenOptions::TLSModel>(Model)); 444 } 445 } 446 447 if (Arg *A = Args.getLastArg(OPT_ffp_contract)) { 448 StringRef Val = A->getValue(); 449 if (Val == "fast") 450 Opts.setFPContractMode(CodeGenOptions::FPC_Fast); 451 else if (Val == "on") 452 Opts.setFPContractMode(CodeGenOptions::FPC_On); 453 else if (Val == "off") 454 Opts.setFPContractMode(CodeGenOptions::FPC_Off); 455 else 456 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Val; 457 } 458 459 return Success; 460 } 461 462 static void ParseDependencyOutputArgs(DependencyOutputOptions &Opts, 463 ArgList &Args) { 464 using namespace options; 465 Opts.OutputFile = Args.getLastArgValue(OPT_dependency_file); 466 Opts.Targets = Args.getAllArgValues(OPT_MT); 467 Opts.IncludeSystemHeaders = Args.hasArg(OPT_sys_header_deps); 468 Opts.UsePhonyTargets = Args.hasArg(OPT_MP); 469 Opts.ShowHeaderIncludes = Args.hasArg(OPT_H); 470 Opts.HeaderIncludeOutputFile = Args.getLastArgValue(OPT_header_include_file); 471 Opts.AddMissingHeaderDeps = Args.hasArg(OPT_MG); 472 Opts.DOTOutputFile = Args.getLastArgValue(OPT_dependency_dot); 473 } 474 475 bool clang::ParseDiagnosticArgs(DiagnosticOptions &Opts, ArgList &Args, 476 DiagnosticsEngine *Diags) { 477 using namespace options; 478 bool Success = true; 479 480 Opts.DiagnosticLogFile = Args.getLastArgValue(OPT_diagnostic_log_file); 481 Opts.DiagnosticSerializationFile = 482 Args.getLastArgValue(OPT_diagnostic_serialized_file); 483 Opts.IgnoreWarnings = Args.hasArg(OPT_w); 484 Opts.NoRewriteMacros = Args.hasArg(OPT_Wno_rewrite_macros); 485 Opts.Pedantic = Args.hasArg(OPT_pedantic); 486 Opts.PedanticErrors = Args.hasArg(OPT_pedantic_errors); 487 Opts.ShowCarets = !Args.hasArg(OPT_fno_caret_diagnostics); 488 Opts.ShowColors = Args.hasArg(OPT_fcolor_diagnostics); 489 Opts.ShowColumn = Args.hasFlag(OPT_fshow_column, 490 OPT_fno_show_column, 491 /*Default=*/true); 492 Opts.ShowFixits = !Args.hasArg(OPT_fno_diagnostics_fixit_info); 493 Opts.ShowLocation = !Args.hasArg(OPT_fno_show_source_location); 494 Opts.ShowOptionNames = Args.hasArg(OPT_fdiagnostics_show_option); 495 496 // Default behavior is to not to show note include stacks. 497 Opts.ShowNoteIncludeStack = false; 498 if (Arg *A = Args.getLastArg(OPT_fdiagnostics_show_note_include_stack, 499 OPT_fno_diagnostics_show_note_include_stack)) 500 if (A->getOption().matches(OPT_fdiagnostics_show_note_include_stack)) 501 Opts.ShowNoteIncludeStack = true; 502 503 StringRef ShowOverloads = 504 Args.getLastArgValue(OPT_fshow_overloads_EQ, "all"); 505 if (ShowOverloads == "best") 506 Opts.setShowOverloads(Ovl_Best); 507 else if (ShowOverloads == "all") 508 Opts.setShowOverloads(Ovl_All); 509 else { 510 Success = false; 511 if (Diags) 512 Diags->Report(diag::err_drv_invalid_value) 513 << Args.getLastArg(OPT_fshow_overloads_EQ)->getAsString(Args) 514 << ShowOverloads; 515 } 516 517 StringRef ShowCategory = 518 Args.getLastArgValue(OPT_fdiagnostics_show_category, "none"); 519 if (ShowCategory == "none") 520 Opts.ShowCategories = 0; 521 else if (ShowCategory == "id") 522 Opts.ShowCategories = 1; 523 else if (ShowCategory == "name") 524 Opts.ShowCategories = 2; 525 else { 526 Success = false; 527 if (Diags) 528 Diags->Report(diag::err_drv_invalid_value) 529 << Args.getLastArg(OPT_fdiagnostics_show_category)->getAsString(Args) 530 << ShowCategory; 531 } 532 533 StringRef Format = 534 Args.getLastArgValue(OPT_fdiagnostics_format, "clang"); 535 if (Format == "clang") 536 Opts.setFormat(DiagnosticOptions::Clang); 537 else if (Format == "msvc") 538 Opts.setFormat(DiagnosticOptions::Msvc); 539 else if (Format == "vi") 540 Opts.setFormat(DiagnosticOptions::Vi); 541 else { 542 Success = false; 543 if (Diags) 544 Diags->Report(diag::err_drv_invalid_value) 545 << Args.getLastArg(OPT_fdiagnostics_format)->getAsString(Args) 546 << Format; 547 } 548 549 Opts.ShowSourceRanges = Args.hasArg(OPT_fdiagnostics_print_source_range_info); 550 Opts.ShowParseableFixits = Args.hasArg(OPT_fdiagnostics_parseable_fixits); 551 Opts.ShowPresumedLoc = !Args.hasArg(OPT_fno_diagnostics_use_presumed_location); 552 Opts.VerifyDiagnostics = Args.hasArg(OPT_verify); 553 Opts.ElideType = !Args.hasArg(OPT_fno_elide_type); 554 Opts.ShowTemplateTree = Args.hasArg(OPT_fdiagnostics_show_template_tree); 555 Opts.ErrorLimit = Args.getLastArgIntValue(OPT_ferror_limit, 0, Diags); 556 Opts.MacroBacktraceLimit 557 = Args.getLastArgIntValue(OPT_fmacro_backtrace_limit, 558 DiagnosticOptions::DefaultMacroBacktraceLimit, Diags); 559 Opts.TemplateBacktraceLimit 560 = Args.getLastArgIntValue(OPT_ftemplate_backtrace_limit, 561 DiagnosticOptions::DefaultTemplateBacktraceLimit, 562 Diags); 563 Opts.ConstexprBacktraceLimit 564 = Args.getLastArgIntValue(OPT_fconstexpr_backtrace_limit, 565 DiagnosticOptions::DefaultConstexprBacktraceLimit, 566 Diags); 567 Opts.TabStop = Args.getLastArgIntValue(OPT_ftabstop, 568 DiagnosticOptions::DefaultTabStop, Diags); 569 if (Opts.TabStop == 0 || Opts.TabStop > DiagnosticOptions::MaxTabStop) { 570 Opts.TabStop = DiagnosticOptions::DefaultTabStop; 571 if (Diags) 572 Diags->Report(diag::warn_ignoring_ftabstop_value) 573 << Opts.TabStop << DiagnosticOptions::DefaultTabStop; 574 } 575 Opts.MessageLength = Args.getLastArgIntValue(OPT_fmessage_length, 0, Diags); 576 Opts.DumpBuildInformation = Args.getLastArgValue(OPT_dump_build_information); 577 addWarningArgs(Args, Opts.Warnings); 578 579 return Success; 580 } 581 582 static void ParseFileSystemArgs(FileSystemOptions &Opts, ArgList &Args) { 583 Opts.WorkingDir = Args.getLastArgValue(OPT_working_directory); 584 } 585 586 static InputKind ParseFrontendArgs(FrontendOptions &Opts, ArgList &Args, 587 DiagnosticsEngine &Diags) { 588 using namespace options; 589 Opts.ProgramAction = frontend::ParseSyntaxOnly; 590 if (const Arg *A = Args.getLastArg(OPT_Action_Group)) { 591 switch (A->getOption().getID()) { 592 default: 593 llvm_unreachable("Invalid option in group!"); 594 case OPT_ast_list: 595 Opts.ProgramAction = frontend::ASTDeclList; break; 596 case OPT_ast_dump: 597 Opts.ProgramAction = frontend::ASTDump; break; 598 case OPT_ast_dump_xml: 599 Opts.ProgramAction = frontend::ASTDumpXML; break; 600 case OPT_ast_print: 601 Opts.ProgramAction = frontend::ASTPrint; break; 602 case OPT_ast_view: 603 Opts.ProgramAction = frontend::ASTView; break; 604 case OPT_dump_raw_tokens: 605 Opts.ProgramAction = frontend::DumpRawTokens; break; 606 case OPT_dump_tokens: 607 Opts.ProgramAction = frontend::DumpTokens; break; 608 case OPT_S: 609 Opts.ProgramAction = frontend::EmitAssembly; break; 610 case OPT_emit_llvm_bc: 611 Opts.ProgramAction = frontend::EmitBC; break; 612 case OPT_emit_html: 613 Opts.ProgramAction = frontend::EmitHTML; break; 614 case OPT_emit_llvm: 615 Opts.ProgramAction = frontend::EmitLLVM; break; 616 case OPT_emit_llvm_only: 617 Opts.ProgramAction = frontend::EmitLLVMOnly; break; 618 case OPT_emit_codegen_only: 619 Opts.ProgramAction = frontend::EmitCodeGenOnly; break; 620 case OPT_emit_obj: 621 Opts.ProgramAction = frontend::EmitObj; break; 622 case OPT_fixit_EQ: 623 Opts.FixItSuffix = A->getValue(); 624 // fall-through! 625 case OPT_fixit: 626 Opts.ProgramAction = frontend::FixIt; break; 627 case OPT_emit_module: 628 Opts.ProgramAction = frontend::GenerateModule; break; 629 case OPT_emit_pch: 630 Opts.ProgramAction = frontend::GeneratePCH; break; 631 case OPT_emit_pth: 632 Opts.ProgramAction = frontend::GeneratePTH; break; 633 case OPT_init_only: 634 Opts.ProgramAction = frontend::InitOnly; break; 635 case OPT_fsyntax_only: 636 Opts.ProgramAction = frontend::ParseSyntaxOnly; break; 637 case OPT_print_decl_contexts: 638 Opts.ProgramAction = frontend::PrintDeclContext; break; 639 case OPT_print_preamble: 640 Opts.ProgramAction = frontend::PrintPreamble; break; 641 case OPT_E: 642 Opts.ProgramAction = frontend::PrintPreprocessedInput; break; 643 case OPT_rewrite_macros: 644 Opts.ProgramAction = frontend::RewriteMacros; break; 645 case OPT_rewrite_objc: 646 Opts.ProgramAction = frontend::RewriteObjC; break; 647 case OPT_rewrite_test: 648 Opts.ProgramAction = frontend::RewriteTest; break; 649 case OPT_analyze: 650 Opts.ProgramAction = frontend::RunAnalysis; break; 651 case OPT_migrate: 652 Opts.ProgramAction = frontend::MigrateSource; break; 653 case OPT_Eonly: 654 Opts.ProgramAction = frontend::RunPreprocessorOnly; break; 655 } 656 } 657 658 if (const Arg* A = Args.getLastArg(OPT_plugin)) { 659 Opts.Plugins.push_back(A->getValue(0)); 660 Opts.ProgramAction = frontend::PluginAction; 661 Opts.ActionName = A->getValue(); 662 663 for (arg_iterator it = Args.filtered_begin(OPT_plugin_arg), 664 end = Args.filtered_end(); it != end; ++it) { 665 if ((*it)->getValue(0) == Opts.ActionName) 666 Opts.PluginArgs.push_back((*it)->getValue(1)); 667 } 668 } 669 670 Opts.AddPluginActions = Args.getAllArgValues(OPT_add_plugin); 671 Opts.AddPluginArgs.resize(Opts.AddPluginActions.size()); 672 for (int i = 0, e = Opts.AddPluginActions.size(); i != e; ++i) { 673 for (arg_iterator it = Args.filtered_begin(OPT_plugin_arg), 674 end = Args.filtered_end(); it != end; ++it) { 675 if ((*it)->getValue(0) == Opts.AddPluginActions[i]) 676 Opts.AddPluginArgs[i].push_back((*it)->getValue(1)); 677 } 678 } 679 680 if (const Arg *A = Args.getLastArg(OPT_code_completion_at)) { 681 Opts.CodeCompletionAt = 682 ParsedSourceLocation::FromString(A->getValue()); 683 if (Opts.CodeCompletionAt.FileName.empty()) 684 Diags.Report(diag::err_drv_invalid_value) 685 << A->getAsString(Args) << A->getValue(); 686 } 687 Opts.DisableFree = Args.hasArg(OPT_disable_free); 688 689 Opts.OutputFile = Args.getLastArgValue(OPT_o); 690 Opts.Plugins = Args.getAllArgValues(OPT_load); 691 Opts.RelocatablePCH = Args.hasArg(OPT_relocatable_pch); 692 Opts.ShowHelp = Args.hasArg(OPT_help); 693 Opts.ShowStats = Args.hasArg(OPT_print_stats); 694 Opts.ShowTimers = Args.hasArg(OPT_ftime_report); 695 Opts.ShowVersion = Args.hasArg(OPT_version); 696 Opts.ASTMergeFiles = Args.getAllArgValues(OPT_ast_merge); 697 Opts.LLVMArgs = Args.getAllArgValues(OPT_mllvm); 698 Opts.FixWhatYouCan = Args.hasArg(OPT_fix_what_you_can); 699 Opts.FixOnlyWarnings = Args.hasArg(OPT_fix_only_warnings); 700 Opts.FixAndRecompile = Args.hasArg(OPT_fixit_recompile); 701 Opts.FixToTemporaries = Args.hasArg(OPT_fixit_to_temp); 702 Opts.ASTDumpFilter = Args.getLastArgValue(OPT_ast_dump_filter); 703 704 Opts.CodeCompleteOpts.IncludeMacros 705 = Args.hasArg(OPT_code_completion_macros); 706 Opts.CodeCompleteOpts.IncludeCodePatterns 707 = Args.hasArg(OPT_code_completion_patterns); 708 Opts.CodeCompleteOpts.IncludeGlobals 709 = !Args.hasArg(OPT_no_code_completion_globals); 710 Opts.CodeCompleteOpts.IncludeBriefComments 711 = Args.hasArg(OPT_code_completion_brief_comments); 712 713 Opts.OverrideRecordLayoutsFile 714 = Args.getLastArgValue(OPT_foverride_record_layout_EQ); 715 if (const Arg *A = Args.getLastArg(OPT_arcmt_check, 716 OPT_arcmt_modify, 717 OPT_arcmt_migrate)) { 718 switch (A->getOption().getID()) { 719 default: 720 llvm_unreachable("missed a case"); 721 case OPT_arcmt_check: 722 Opts.ARCMTAction = FrontendOptions::ARCMT_Check; 723 break; 724 case OPT_arcmt_modify: 725 Opts.ARCMTAction = FrontendOptions::ARCMT_Modify; 726 break; 727 case OPT_arcmt_migrate: 728 Opts.ARCMTAction = FrontendOptions::ARCMT_Migrate; 729 break; 730 } 731 } 732 Opts.MTMigrateDir = Args.getLastArgValue(OPT_mt_migrate_directory); 733 Opts.ARCMTMigrateReportOut 734 = Args.getLastArgValue(OPT_arcmt_migrate_report_output); 735 Opts.ARCMTMigrateEmitARCErrors 736 = Args.hasArg(OPT_arcmt_migrate_emit_arc_errors); 737 738 if (Args.hasArg(OPT_objcmt_migrate_literals)) 739 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_Literals; 740 if (Args.hasArg(OPT_objcmt_migrate_subscripting)) 741 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_Subscripting; 742 743 if (Opts.ARCMTAction != FrontendOptions::ARCMT_None && 744 Opts.ObjCMTAction != FrontendOptions::ObjCMT_None) { 745 Diags.Report(diag::err_drv_argument_not_allowed_with) 746 << "ARC migration" << "ObjC migration"; 747 } 748 749 InputKind DashX = IK_None; 750 if (const Arg *A = Args.getLastArg(OPT_x)) { 751 DashX = llvm::StringSwitch<InputKind>(A->getValue()) 752 .Case("c", IK_C) 753 .Case("cl", IK_OpenCL) 754 .Case("cuda", IK_CUDA) 755 .Case("c++", IK_CXX) 756 .Case("objective-c", IK_ObjC) 757 .Case("objective-c++", IK_ObjCXX) 758 .Case("cpp-output", IK_PreprocessedC) 759 .Case("assembler-with-cpp", IK_Asm) 760 .Case("c++-cpp-output", IK_PreprocessedCXX) 761 .Case("objective-c-cpp-output", IK_PreprocessedObjC) 762 .Case("objc-cpp-output", IK_PreprocessedObjC) 763 .Case("objective-c++-cpp-output", IK_PreprocessedObjCXX) 764 .Case("objc++-cpp-output", IK_PreprocessedObjCXX) 765 .Case("c-header", IK_C) 766 .Case("cl-header", IK_OpenCL) 767 .Case("objective-c-header", IK_ObjC) 768 .Case("c++-header", IK_CXX) 769 .Case("objective-c++-header", IK_ObjCXX) 770 .Case("ast", IK_AST) 771 .Case("ir", IK_LLVM_IR) 772 .Default(IK_None); 773 if (DashX == IK_None) 774 Diags.Report(diag::err_drv_invalid_value) 775 << A->getAsString(Args) << A->getValue(); 776 } 777 778 // '-' is the default input if none is given. 779 std::vector<std::string> Inputs = Args.getAllArgValues(OPT_INPUT); 780 Opts.Inputs.clear(); 781 if (Inputs.empty()) 782 Inputs.push_back("-"); 783 for (unsigned i = 0, e = Inputs.size(); i != e; ++i) { 784 InputKind IK = DashX; 785 if (IK == IK_None) { 786 IK = FrontendOptions::getInputKindForExtension( 787 StringRef(Inputs[i]).rsplit('.').second); 788 // FIXME: Remove this hack. 789 if (i == 0) 790 DashX = IK; 791 } 792 Opts.Inputs.push_back(FrontendInputFile(Inputs[i], IK)); 793 } 794 795 return DashX; 796 } 797 798 std::string CompilerInvocation::GetResourcesPath(const char *Argv0, 799 void *MainAddr) { 800 llvm::sys::Path P = llvm::sys::Path::GetMainExecutable(Argv0, MainAddr); 801 802 if (!P.isEmpty()) { 803 P.eraseComponent(); // Remove /clang from foo/bin/clang 804 P.eraseComponent(); // Remove /bin from foo/bin 805 806 // Get foo/lib/clang/<version>/include 807 P.appendComponent("lib"); 808 P.appendComponent("clang"); 809 P.appendComponent(CLANG_VERSION_STRING); 810 } 811 812 return P.str(); 813 } 814 815 static void ParseHeaderSearchArgs(HeaderSearchOptions &Opts, ArgList &Args) { 816 using namespace options; 817 Opts.Sysroot = Args.getLastArgValue(OPT_isysroot, "/"); 818 Opts.Verbose = Args.hasArg(OPT_v); 819 Opts.UseBuiltinIncludes = !Args.hasArg(OPT_nobuiltininc); 820 Opts.UseStandardSystemIncludes = !Args.hasArg(OPT_nostdsysteminc); 821 Opts.UseStandardCXXIncludes = !Args.hasArg(OPT_nostdincxx); 822 if (const Arg *A = Args.getLastArg(OPT_stdlib_EQ)) 823 Opts.UseLibcxx = (strcmp(A->getValue(), "libc++") == 0); 824 Opts.ResourceDir = Args.getLastArgValue(OPT_resource_dir); 825 Opts.ModuleCachePath = Args.getLastArgValue(OPT_fmodule_cache_path); 826 Opts.DisableModuleHash = Args.hasArg(OPT_fdisable_module_hash); 827 828 // Add -I..., -F..., and -index-header-map options in order. 829 bool IsIndexHeaderMap = false; 830 for (arg_iterator it = Args.filtered_begin(OPT_I, OPT_F, 831 OPT_index_header_map), 832 ie = Args.filtered_end(); it != ie; ++it) { 833 if ((*it)->getOption().matches(OPT_index_header_map)) { 834 // -index-header-map applies to the next -I or -F. 835 IsIndexHeaderMap = true; 836 continue; 837 } 838 839 frontend::IncludeDirGroup Group 840 = IsIndexHeaderMap? frontend::IndexHeaderMap : frontend::Angled; 841 842 Opts.AddPath((*it)->getValue(), Group, true, 843 /*IsFramework=*/ (*it)->getOption().matches(OPT_F), false); 844 IsIndexHeaderMap = false; 845 } 846 847 // Add -iprefix/-iwith-prefix/-iwithprefixbefore options. 848 StringRef Prefix = ""; // FIXME: This isn't the correct default prefix. 849 for (arg_iterator it = Args.filtered_begin(OPT_iprefix, OPT_iwithprefix, 850 OPT_iwithprefixbefore), 851 ie = Args.filtered_end(); it != ie; ++it) { 852 const Arg *A = *it; 853 if (A->getOption().matches(OPT_iprefix)) 854 Prefix = A->getValue(); 855 else if (A->getOption().matches(OPT_iwithprefix)) 856 Opts.AddPath(Prefix.str() + A->getValue(), 857 frontend::System, false, false, false); 858 else 859 Opts.AddPath(Prefix.str() + A->getValue(), 860 frontend::Angled, false, false, false); 861 } 862 863 for (arg_iterator it = Args.filtered_begin(OPT_idirafter), 864 ie = Args.filtered_end(); it != ie; ++it) 865 Opts.AddPath((*it)->getValue(), frontend::After, true, false, false); 866 for (arg_iterator it = Args.filtered_begin(OPT_iquote), 867 ie = Args.filtered_end(); it != ie; ++it) 868 Opts.AddPath((*it)->getValue(), frontend::Quoted, true, false, false); 869 for (arg_iterator it = Args.filtered_begin(OPT_isystem, 870 OPT_iwithsysroot), ie = Args.filtered_end(); it != ie; ++it) 871 Opts.AddPath((*it)->getValue(), frontend::System, true, false, 872 !(*it)->getOption().matches(OPT_iwithsysroot)); 873 for (arg_iterator it = Args.filtered_begin(OPT_iframework), 874 ie = Args.filtered_end(); it != ie; ++it) 875 Opts.AddPath((*it)->getValue(), frontend::System, true, true, 876 true); 877 878 // Add the paths for the various language specific isystem flags. 879 for (arg_iterator it = Args.filtered_begin(OPT_c_isystem), 880 ie = Args.filtered_end(); it != ie; ++it) 881 Opts.AddPath((*it)->getValue(), frontend::CSystem, true, false, true); 882 for (arg_iterator it = Args.filtered_begin(OPT_cxx_isystem), 883 ie = Args.filtered_end(); it != ie; ++it) 884 Opts.AddPath((*it)->getValue(), frontend::CXXSystem, true, false, true); 885 for (arg_iterator it = Args.filtered_begin(OPT_objc_isystem), 886 ie = Args.filtered_end(); it != ie; ++it) 887 Opts.AddPath((*it)->getValue(), frontend::ObjCSystem, true, false,true); 888 for (arg_iterator it = Args.filtered_begin(OPT_objcxx_isystem), 889 ie = Args.filtered_end(); it != ie; ++it) 890 Opts.AddPath((*it)->getValue(), frontend::ObjCXXSystem, true, false, 891 true); 892 893 // Add the internal paths from a driver that detects standard include paths. 894 for (arg_iterator I = Args.filtered_begin(OPT_internal_isystem, 895 OPT_internal_externc_isystem), 896 E = Args.filtered_end(); 897 I != E; ++I) 898 Opts.AddPath((*I)->getValue(), frontend::System, 899 false, false, /*IgnoreSysRoot=*/true, /*IsInternal=*/true, 900 (*I)->getOption().matches(OPT_internal_externc_isystem)); 901 902 // Add the path prefixes which are implicitly treated as being system headers. 903 for (arg_iterator I = Args.filtered_begin(OPT_isystem_prefix, 904 OPT_ino_system_prefix), 905 E = Args.filtered_end(); 906 I != E; ++I) 907 Opts.AddSystemHeaderPrefix((*I)->getValue(), 908 (*I)->getOption().matches(OPT_isystem_prefix)); 909 } 910 911 void CompilerInvocation::setLangDefaults(LangOptions &Opts, InputKind IK, 912 LangStandard::Kind LangStd) { 913 // Set some properties which depend solely on the input kind; it would be nice 914 // to move these to the language standard, and have the driver resolve the 915 // input kind + language standard. 916 if (IK == IK_Asm) { 917 Opts.AsmPreprocessor = 1; 918 } else if (IK == IK_ObjC || 919 IK == IK_ObjCXX || 920 IK == IK_PreprocessedObjC || 921 IK == IK_PreprocessedObjCXX) { 922 Opts.ObjC1 = Opts.ObjC2 = 1; 923 } 924 925 if (LangStd == LangStandard::lang_unspecified) { 926 // Based on the base language, pick one. 927 switch (IK) { 928 case IK_None: 929 case IK_AST: 930 case IK_LLVM_IR: 931 llvm_unreachable("Invalid input kind!"); 932 case IK_OpenCL: 933 LangStd = LangStandard::lang_opencl; 934 break; 935 case IK_CUDA: 936 LangStd = LangStandard::lang_cuda; 937 break; 938 case IK_Asm: 939 case IK_C: 940 case IK_PreprocessedC: 941 case IK_ObjC: 942 case IK_PreprocessedObjC: 943 LangStd = LangStandard::lang_gnu99; 944 break; 945 case IK_CXX: 946 case IK_PreprocessedCXX: 947 case IK_ObjCXX: 948 case IK_PreprocessedObjCXX: 949 LangStd = LangStandard::lang_gnucxx98; 950 break; 951 } 952 } 953 954 const LangStandard &Std = LangStandard::getLangStandardForKind(LangStd); 955 Opts.LineComment = Std.hasLineComments(); 956 Opts.C99 = Std.isC99(); 957 Opts.C11 = Std.isC11(); 958 Opts.CPlusPlus = Std.isCPlusPlus(); 959 Opts.CPlusPlus0x = Std.isCPlusPlus0x(); 960 Opts.CPlusPlus1y = Std.isCPlusPlus1y(); 961 Opts.Digraphs = Std.hasDigraphs(); 962 Opts.GNUMode = Std.isGNUMode(); 963 Opts.GNUInline = !Std.isC99(); 964 Opts.HexFloats = Std.hasHexFloats(); 965 Opts.ImplicitInt = Std.hasImplicitInt(); 966 967 // Set OpenCL Version. 968 if (LangStd == LangStandard::lang_opencl) { 969 Opts.OpenCL = 1; 970 Opts.OpenCLVersion = 100; 971 } 972 else if (LangStd == LangStandard::lang_opencl11) { 973 Opts.OpenCL = 1; 974 Opts.OpenCLVersion = 110; 975 } 976 else if (LangStd == LangStandard::lang_opencl12) { 977 Opts.OpenCL = 1; 978 Opts.OpenCLVersion = 120; 979 } 980 981 // OpenCL has some additional defaults. 982 if (Opts.OpenCL) { 983 Opts.AltiVec = 0; 984 Opts.CXXOperatorNames = 1; 985 Opts.LaxVectorConversions = 0; 986 Opts.DefaultFPContract = 1; 987 } 988 989 if (LangStd == LangStandard::lang_cuda) 990 Opts.CUDA = 1; 991 992 // OpenCL and C++ both have bool, true, false keywords. 993 Opts.Bool = Opts.OpenCL || Opts.CPlusPlus; 994 995 // C++ has wchar_t keyword. 996 Opts.WChar = Opts.CPlusPlus; 997 998 Opts.GNUKeywords = Opts.GNUMode; 999 Opts.CXXOperatorNames = Opts.CPlusPlus; 1000 1001 // Mimicing gcc's behavior, trigraphs are only enabled if -trigraphs 1002 // is specified, or -std is set to a conforming mode. 1003 Opts.Trigraphs = !Opts.GNUMode; 1004 1005 Opts.DollarIdents = !Opts.AsmPreprocessor; 1006 } 1007 1008 static void ParseLangArgs(LangOptions &Opts, ArgList &Args, InputKind IK, 1009 DiagnosticsEngine &Diags) { 1010 // FIXME: Cleanup per-file based stuff. 1011 LangStandard::Kind LangStd = LangStandard::lang_unspecified; 1012 if (const Arg *A = Args.getLastArg(OPT_std_EQ)) { 1013 LangStd = llvm::StringSwitch<LangStandard::Kind>(A->getValue()) 1014 #define LANGSTANDARD(id, name, desc, features) \ 1015 .Case(name, LangStandard::lang_##id) 1016 #include "clang/Frontend/LangStandards.def" 1017 .Default(LangStandard::lang_unspecified); 1018 if (LangStd == LangStandard::lang_unspecified) 1019 Diags.Report(diag::err_drv_invalid_value) 1020 << A->getAsString(Args) << A->getValue(); 1021 else { 1022 // Valid standard, check to make sure language and standard are compatable. 1023 const LangStandard &Std = LangStandard::getLangStandardForKind(LangStd); 1024 switch (IK) { 1025 case IK_C: 1026 case IK_ObjC: 1027 case IK_PreprocessedC: 1028 case IK_PreprocessedObjC: 1029 if (!(Std.isC89() || Std.isC99())) 1030 Diags.Report(diag::err_drv_argument_not_allowed_with) 1031 << A->getAsString(Args) << "C/ObjC"; 1032 break; 1033 case IK_CXX: 1034 case IK_ObjCXX: 1035 case IK_PreprocessedCXX: 1036 case IK_PreprocessedObjCXX: 1037 if (!Std.isCPlusPlus()) 1038 Diags.Report(diag::err_drv_argument_not_allowed_with) 1039 << A->getAsString(Args) << "C++/ObjC++"; 1040 break; 1041 case IK_OpenCL: 1042 if (!Std.isC99()) 1043 Diags.Report(diag::err_drv_argument_not_allowed_with) 1044 << A->getAsString(Args) << "OpenCL"; 1045 break; 1046 case IK_CUDA: 1047 if (!Std.isCPlusPlus()) 1048 Diags.Report(diag::err_drv_argument_not_allowed_with) 1049 << A->getAsString(Args) << "CUDA"; 1050 break; 1051 default: 1052 break; 1053 } 1054 } 1055 } 1056 1057 // -cl-std only applies for OpenCL language standards. 1058 // Override the -std option in this case. 1059 if (const Arg *A = Args.getLastArg(OPT_cl_std_EQ)) { 1060 LangStandard::Kind OpenCLLangStd 1061 = llvm::StringSwitch<LangStandard::Kind>(A->getValue()) 1062 .Case("CL", LangStandard::lang_opencl) 1063 .Case("CL1.1", LangStandard::lang_opencl11) 1064 .Case("CL1.2", LangStandard::lang_opencl12) 1065 .Default(LangStandard::lang_unspecified); 1066 1067 if (OpenCLLangStd == LangStandard::lang_unspecified) { 1068 Diags.Report(diag::err_drv_invalid_value) 1069 << A->getAsString(Args) << A->getValue(); 1070 } 1071 else 1072 LangStd = OpenCLLangStd; 1073 } 1074 1075 CompilerInvocation::setLangDefaults(Opts, IK, LangStd); 1076 1077 // We abuse '-f[no-]gnu-keywords' to force overriding all GNU-extension 1078 // keywords. This behavior is provided by GCC's poorly named '-fasm' flag, 1079 // while a subset (the non-C++ GNU keywords) is provided by GCC's 1080 // '-fgnu-keywords'. Clang conflates the two for simplicity under the single 1081 // name, as it doesn't seem a useful distinction. 1082 Opts.GNUKeywords = Args.hasFlag(OPT_fgnu_keywords, OPT_fno_gnu_keywords, 1083 Opts.GNUKeywords); 1084 1085 if (Args.hasArg(OPT_fno_operator_names)) 1086 Opts.CXXOperatorNames = 0; 1087 1088 if (Opts.ObjC1) { 1089 if (Arg *arg = Args.getLastArg(OPT_fobjc_runtime_EQ)) { 1090 StringRef value = arg->getValue(); 1091 if (Opts.ObjCRuntime.tryParse(value)) 1092 Diags.Report(diag::err_drv_unknown_objc_runtime) << value; 1093 } 1094 1095 if (Args.hasArg(OPT_fobjc_gc_only)) 1096 Opts.setGC(LangOptions::GCOnly); 1097 else if (Args.hasArg(OPT_fobjc_gc)) 1098 Opts.setGC(LangOptions::HybridGC); 1099 else if (Args.hasArg(OPT_fobjc_arc)) { 1100 Opts.ObjCAutoRefCount = 1; 1101 if (!Opts.ObjCRuntime.allowsARC()) 1102 Diags.Report(diag::err_arc_unsupported_on_runtime); 1103 1104 // Only set ObjCARCWeak if ARC is enabled. 1105 if (Args.hasArg(OPT_fobjc_runtime_has_weak)) 1106 Opts.ObjCARCWeak = 1; 1107 else 1108 Opts.ObjCARCWeak = Opts.ObjCRuntime.allowsWeak(); 1109 } 1110 1111 if (Args.hasArg(OPT_fno_objc_infer_related_result_type)) 1112 Opts.ObjCInferRelatedResultType = 0; 1113 } 1114 1115 if (Args.hasArg(OPT_fgnu89_inline)) 1116 Opts.GNUInline = 1; 1117 1118 if (Args.hasArg(OPT_fapple_kext)) { 1119 if (!Opts.CPlusPlus) 1120 Diags.Report(diag::warn_c_kext); 1121 else 1122 Opts.AppleKext = 1; 1123 } 1124 1125 if (Args.hasArg(OPT_print_ivar_layout)) 1126 Opts.ObjCGCBitmapPrint = 1; 1127 if (Args.hasArg(OPT_fno_constant_cfstrings)) 1128 Opts.NoConstantCFStrings = 1; 1129 1130 if (Args.hasArg(OPT_faltivec)) 1131 Opts.AltiVec = 1; 1132 1133 if (Args.hasArg(OPT_pthread)) 1134 Opts.POSIXThreads = 1; 1135 1136 if (Args.hasArg(OPT_fdelayed_template_parsing)) 1137 Opts.DelayedTemplateParsing = 1; 1138 1139 StringRef Vis = Args.getLastArgValue(OPT_fvisibility, "default"); 1140 if (Vis == "default") 1141 Opts.setVisibilityMode(DefaultVisibility); 1142 else if (Vis == "hidden") 1143 Opts.setVisibilityMode(HiddenVisibility); 1144 else if (Vis == "protected") 1145 // FIXME: diagnose if target does not support protected visibility 1146 Opts.setVisibilityMode(ProtectedVisibility); 1147 else 1148 Diags.Report(diag::err_drv_invalid_value) 1149 << Args.getLastArg(OPT_fvisibility)->getAsString(Args) << Vis; 1150 1151 if (Args.hasArg(OPT_fvisibility_inlines_hidden)) 1152 Opts.InlineVisibilityHidden = 1; 1153 1154 if (Args.hasArg(OPT_ftrapv)) { 1155 Opts.setSignedOverflowBehavior(LangOptions::SOB_Trapping); 1156 // Set the handler, if one is specified. 1157 Opts.OverflowHandler = 1158 Args.getLastArgValue(OPT_ftrapv_handler); 1159 } 1160 else if (Args.hasArg(OPT_fwrapv)) 1161 Opts.setSignedOverflowBehavior(LangOptions::SOB_Defined); 1162 1163 if (Args.hasArg(OPT_trigraphs)) 1164 Opts.Trigraphs = 1; 1165 1166 Opts.DollarIdents = Args.hasFlag(OPT_fdollars_in_identifiers, 1167 OPT_fno_dollars_in_identifiers, 1168 Opts.DollarIdents); 1169 Opts.PascalStrings = Args.hasArg(OPT_fpascal_strings); 1170 Opts.MicrosoftExt 1171 = Args.hasArg(OPT_fms_extensions) || Args.hasArg(OPT_fms_compatibility); 1172 Opts.MicrosoftMode = Args.hasArg(OPT_fms_compatibility); 1173 Opts.MSCVersion = Args.getLastArgIntValue(OPT_fmsc_version, 0, Diags); 1174 Opts.Borland = Args.hasArg(OPT_fborland_extensions); 1175 Opts.WritableStrings = Args.hasArg(OPT_fwritable_strings); 1176 Opts.ConstStrings = Args.hasFlag(OPT_fconst_strings, OPT_fno_const_strings, 1177 Opts.ConstStrings); 1178 if (Args.hasArg(OPT_fno_lax_vector_conversions)) 1179 Opts.LaxVectorConversions = 0; 1180 if (Args.hasArg(OPT_fno_threadsafe_statics)) 1181 Opts.ThreadsafeStatics = 0; 1182 Opts.Exceptions = Args.hasArg(OPT_fexceptions); 1183 Opts.ObjCExceptions = Args.hasArg(OPT_fobjc_exceptions); 1184 Opts.CXXExceptions = Args.hasArg(OPT_fcxx_exceptions); 1185 Opts.SjLjExceptions = Args.hasArg(OPT_fsjlj_exceptions); 1186 Opts.TraditionalCPP = Args.hasArg(OPT_traditional_cpp); 1187 1188 Opts.RTTI = !Args.hasArg(OPT_fno_rtti); 1189 Opts.Blocks = Args.hasArg(OPT_fblocks); 1190 Opts.BlocksRuntimeOptional = Args.hasArg(OPT_fblocks_runtime_optional); 1191 Opts.Modules = Args.hasArg(OPT_fmodules); 1192 Opts.CharIsSigned = !Args.hasArg(OPT_fno_signed_char); 1193 Opts.WChar = Opts.CPlusPlus && !Args.hasArg(OPT_fno_wchar); 1194 Opts.ShortWChar = Args.hasArg(OPT_fshort_wchar); 1195 Opts.ShortEnums = Args.hasArg(OPT_fshort_enums); 1196 Opts.Freestanding = Args.hasArg(OPT_ffreestanding); 1197 Opts.NoBuiltin = Args.hasArg(OPT_fno_builtin) || Opts.Freestanding; 1198 Opts.AssumeSaneOperatorNew = !Args.hasArg(OPT_fno_assume_sane_operator_new); 1199 Opts.HeinousExtensions = Args.hasArg(OPT_fheinous_gnu_extensions); 1200 Opts.AccessControl = !Args.hasArg(OPT_fno_access_control); 1201 Opts.ElideConstructors = !Args.hasArg(OPT_fno_elide_constructors); 1202 Opts.MathErrno = Args.hasArg(OPT_fmath_errno); 1203 Opts.InstantiationDepth = Args.getLastArgIntValue(OPT_ftemplate_depth, 512, 1204 Diags); 1205 Opts.ConstexprCallDepth = Args.getLastArgIntValue(OPT_fconstexpr_depth, 512, 1206 Diags); 1207 Opts.DelayedTemplateParsing = Args.hasArg(OPT_fdelayed_template_parsing); 1208 Opts.NumLargeByValueCopy = Args.getLastArgIntValue(OPT_Wlarge_by_value_copy_EQ, 1209 0, Diags); 1210 Opts.MSBitfields = Args.hasArg(OPT_mms_bitfields); 1211 Opts.ObjCConstantStringClass = 1212 Args.getLastArgValue(OPT_fconstant_string_class); 1213 Opts.ObjCDefaultSynthProperties = 1214 Args.hasArg(OPT_fobjc_default_synthesize_properties); 1215 Opts.EncodeExtendedBlockSig = 1216 Args.hasArg(OPT_fencode_extended_block_signature); 1217 Opts.EmitAllDecls = Args.hasArg(OPT_femit_all_decls); 1218 Opts.PackStruct = Args.getLastArgIntValue(OPT_fpack_struct_EQ, 0, Diags); 1219 Opts.PICLevel = Args.getLastArgIntValue(OPT_pic_level, 0, Diags); 1220 Opts.PIELevel = Args.getLastArgIntValue(OPT_pie_level, 0, Diags); 1221 Opts.Static = Args.hasArg(OPT_static_define); 1222 Opts.DumpRecordLayoutsSimple = Args.hasArg(OPT_fdump_record_layouts_simple); 1223 Opts.DumpRecordLayouts = Opts.DumpRecordLayoutsSimple 1224 || Args.hasArg(OPT_fdump_record_layouts); 1225 Opts.DumpVTableLayouts = Args.hasArg(OPT_fdump_vtable_layouts); 1226 Opts.SpellChecking = !Args.hasArg(OPT_fno_spell_checking); 1227 Opts.NoBitFieldTypeAlign = Args.hasArg(OPT_fno_bitfield_type_align); 1228 Opts.SinglePrecisionConstants = Args.hasArg(OPT_cl_single_precision_constant); 1229 Opts.FastRelaxedMath = Args.hasArg(OPT_cl_fast_relaxed_math); 1230 Opts.MRTD = Args.hasArg(OPT_mrtd); 1231 Opts.HexagonQdsp6Compat = Args.hasArg(OPT_mqdsp6_compat); 1232 Opts.FakeAddressSpaceMap = Args.hasArg(OPT_ffake_address_space_map); 1233 Opts.ParseUnknownAnytype = Args.hasArg(OPT_funknown_anytype); 1234 Opts.DebuggerSupport = Args.hasArg(OPT_fdebugger_support); 1235 Opts.DebuggerCastResultToId = Args.hasArg(OPT_fdebugger_cast_result_to_id); 1236 Opts.DebuggerObjCLiteral = Args.hasArg(OPT_fdebugger_objc_literal); 1237 Opts.ApplePragmaPack = Args.hasArg(OPT_fapple_pragma_pack); 1238 Opts.CurrentModule = Args.getLastArgValue(OPT_fmodule_name); 1239 1240 // Record whether the __DEPRECATED define was requested. 1241 Opts.Deprecated = Args.hasFlag(OPT_fdeprecated_macro, 1242 OPT_fno_deprecated_macro, 1243 Opts.Deprecated); 1244 1245 // FIXME: Eliminate this dependency. 1246 unsigned Opt = getOptimizationLevel(Args, IK, Diags), 1247 OptSize = getOptimizationLevelSize(Args, IK, Diags); 1248 Opts.Optimize = Opt != 0; 1249 Opts.OptimizeSize = OptSize != 0; 1250 1251 // This is the __NO_INLINE__ define, which just depends on things like the 1252 // optimization level and -fno-inline, not actually whether the backend has 1253 // inlining enabled. 1254 Opts.NoInlineDefine = !Opt || Args.hasArg(OPT_fno_inline); 1255 1256 Opts.FastMath = Args.hasArg(OPT_ffast_math); 1257 Opts.FiniteMathOnly = Args.hasArg(OPT_ffinite_math_only); 1258 1259 Opts.EmitMicrosoftInlineAsm = Args.hasArg(OPT_fenable_experimental_ms_inline_asm); 1260 1261 Opts.RetainCommentsFromSystemHeaders = 1262 Args.hasArg(OPT_fretain_comments_from_system_headers); 1263 1264 unsigned SSP = Args.getLastArgIntValue(OPT_stack_protector, 0, Diags); 1265 switch (SSP) { 1266 default: 1267 Diags.Report(diag::err_drv_invalid_value) 1268 << Args.getLastArg(OPT_stack_protector)->getAsString(Args) << SSP; 1269 break; 1270 case 0: Opts.setStackProtector(LangOptions::SSPOff); break; 1271 case 1: Opts.setStackProtector(LangOptions::SSPOn); break; 1272 case 2: Opts.setStackProtector(LangOptions::SSPReq); break; 1273 } 1274 1275 // Parse -fsanitize= arguments. 1276 std::vector<std::string> Sanitizers = Args.getAllArgValues(OPT_fsanitize_EQ); 1277 for (unsigned I = 0, N = Sanitizers.size(); I != N; ++I) { 1278 // Since the Opts.Sanitize* values are bitfields, it's a little tricky to 1279 // efficiently map string values to them. Perform the mapping indirectly: 1280 // convert strings to enumerated values, then switch over the enum to set 1281 // the right bitfield value. 1282 enum Sanitizer { 1283 #define SANITIZER(NAME, ID) \ 1284 ID, 1285 #include "clang/Basic/Sanitizers.def" 1286 Unknown 1287 }; 1288 switch (llvm::StringSwitch<unsigned>(Sanitizers[I]) 1289 #define SANITIZER(NAME, ID) \ 1290 .Case(NAME, ID) 1291 #include "clang/Basic/Sanitizers.def" 1292 .Default(Unknown)) { 1293 #define SANITIZER(NAME, ID) \ 1294 case ID: \ 1295 Opts.Sanitize##ID = true; \ 1296 break; 1297 #include "clang/Basic/Sanitizers.def" 1298 1299 case Unknown: 1300 Diags.Report(diag::err_drv_invalid_value) 1301 << "-fsanitize=" << Sanitizers[I]; 1302 break; 1303 } 1304 } 1305 } 1306 1307 static void ParsePreprocessorArgs(PreprocessorOptions &Opts, ArgList &Args, 1308 FileManager &FileMgr, 1309 DiagnosticsEngine &Diags) { 1310 using namespace options; 1311 Opts.ImplicitPCHInclude = Args.getLastArgValue(OPT_include_pch); 1312 Opts.ImplicitPTHInclude = Args.getLastArgValue(OPT_include_pth); 1313 if (const Arg *A = Args.getLastArg(OPT_token_cache)) 1314 Opts.TokenCache = A->getValue(); 1315 else 1316 Opts.TokenCache = Opts.ImplicitPTHInclude; 1317 Opts.UsePredefines = !Args.hasArg(OPT_undef); 1318 Opts.DetailedRecord = Args.hasArg(OPT_detailed_preprocessing_record); 1319 Opts.DisablePCHValidation = Args.hasArg(OPT_fno_validate_pch); 1320 1321 Opts.DumpDeserializedPCHDecls = Args.hasArg(OPT_dump_deserialized_pch_decls); 1322 for (arg_iterator it = Args.filtered_begin(OPT_error_on_deserialized_pch_decl), 1323 ie = Args.filtered_end(); it != ie; ++it) { 1324 const Arg *A = *it; 1325 Opts.DeserializedPCHDeclsToErrorOn.insert(A->getValue()); 1326 } 1327 1328 if (const Arg *A = Args.getLastArg(OPT_preamble_bytes_EQ)) { 1329 StringRef Value(A->getValue()); 1330 size_t Comma = Value.find(','); 1331 unsigned Bytes = 0; 1332 unsigned EndOfLine = 0; 1333 1334 if (Comma == StringRef::npos || 1335 Value.substr(0, Comma).getAsInteger(10, Bytes) || 1336 Value.substr(Comma + 1).getAsInteger(10, EndOfLine)) 1337 Diags.Report(diag::err_drv_preamble_format); 1338 else { 1339 Opts.PrecompiledPreambleBytes.first = Bytes; 1340 Opts.PrecompiledPreambleBytes.second = (EndOfLine != 0); 1341 } 1342 } 1343 1344 // Add macros from the command line. 1345 for (arg_iterator it = Args.filtered_begin(OPT_D, OPT_U), 1346 ie = Args.filtered_end(); it != ie; ++it) { 1347 if ((*it)->getOption().matches(OPT_D)) 1348 Opts.addMacroDef((*it)->getValue()); 1349 else 1350 Opts.addMacroUndef((*it)->getValue()); 1351 } 1352 1353 Opts.MacroIncludes = Args.getAllArgValues(OPT_imacros); 1354 1355 // Add the ordered list of -includes. 1356 for (arg_iterator it = Args.filtered_begin(OPT_include, OPT_include_pch, 1357 OPT_include_pth), 1358 ie = Args.filtered_end(); it != ie; ++it) { 1359 const Arg *A = *it; 1360 Opts.Includes.push_back(A->getValue()); 1361 } 1362 1363 for (arg_iterator it = Args.filtered_begin(OPT_chain_include), 1364 ie = Args.filtered_end(); it != ie; ++it) { 1365 const Arg *A = *it; 1366 Opts.ChainedIncludes.push_back(A->getValue()); 1367 } 1368 1369 // Include 'altivec.h' if -faltivec option present 1370 if (Args.hasArg(OPT_faltivec)) 1371 Opts.Includes.push_back("altivec.h"); 1372 1373 for (arg_iterator it = Args.filtered_begin(OPT_remap_file), 1374 ie = Args.filtered_end(); it != ie; ++it) { 1375 const Arg *A = *it; 1376 std::pair<StringRef,StringRef> Split = 1377 StringRef(A->getValue()).split(';'); 1378 1379 if (Split.second.empty()) { 1380 Diags.Report(diag::err_drv_invalid_remap_file) << A->getAsString(Args); 1381 continue; 1382 } 1383 1384 Opts.addRemappedFile(Split.first, Split.second); 1385 } 1386 1387 if (Arg *A = Args.getLastArg(OPT_fobjc_arc_cxxlib_EQ)) { 1388 StringRef Name = A->getValue(); 1389 unsigned Library = llvm::StringSwitch<unsigned>(Name) 1390 .Case("libc++", ARCXX_libcxx) 1391 .Case("libstdc++", ARCXX_libstdcxx) 1392 .Case("none", ARCXX_nolib) 1393 .Default(~0U); 1394 if (Library == ~0U) 1395 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Name; 1396 else 1397 Opts.ObjCXXARCStandardLibrary = (ObjCXXARCStandardLibraryKind)Library; 1398 } 1399 } 1400 1401 static void ParsePreprocessorOutputArgs(PreprocessorOutputOptions &Opts, 1402 ArgList &Args) { 1403 using namespace options; 1404 Opts.ShowCPP = !Args.hasArg(OPT_dM); 1405 Opts.ShowComments = Args.hasArg(OPT_C); 1406 Opts.ShowLineMarkers = !Args.hasArg(OPT_P); 1407 Opts.ShowMacroComments = Args.hasArg(OPT_CC); 1408 Opts.ShowMacros = Args.hasArg(OPT_dM) || Args.hasArg(OPT_dD); 1409 Opts.RewriteIncludes = Args.hasArg(OPT_frewrite_includes); 1410 } 1411 1412 static void ParseTargetArgs(TargetOptions &Opts, ArgList &Args) { 1413 using namespace options; 1414 Opts.ABI = Args.getLastArgValue(OPT_target_abi); 1415 Opts.CXXABI = Args.getLastArgValue(OPT_cxx_abi); 1416 Opts.CPU = Args.getLastArgValue(OPT_target_cpu); 1417 Opts.FeaturesAsWritten = Args.getAllArgValues(OPT_target_feature); 1418 Opts.LinkerVersion = Args.getLastArgValue(OPT_target_linker_version); 1419 Opts.Triple = llvm::Triple::normalize(Args.getLastArgValue(OPT_triple)); 1420 1421 // Use the default target triple if unspecified. 1422 if (Opts.Triple.empty()) 1423 Opts.Triple = llvm::sys::getDefaultTargetTriple(); 1424 } 1425 1426 // 1427 1428 bool CompilerInvocation::CreateFromArgs(CompilerInvocation &Res, 1429 const char *const *ArgBegin, 1430 const char *const *ArgEnd, 1431 DiagnosticsEngine &Diags) { 1432 bool Success = true; 1433 1434 // Parse the arguments. 1435 OwningPtr<OptTable> Opts(createDriverOptTable()); 1436 unsigned MissingArgIndex, MissingArgCount; 1437 OwningPtr<InputArgList> Args( 1438 Opts->ParseArgs(ArgBegin, ArgEnd,MissingArgIndex, MissingArgCount)); 1439 1440 // Check for missing argument error. 1441 if (MissingArgCount) { 1442 Diags.Report(diag::err_drv_missing_argument) 1443 << Args->getArgString(MissingArgIndex) << MissingArgCount; 1444 Success = false; 1445 } 1446 1447 // Issue errors on unknown arguments. 1448 for (arg_iterator it = Args->filtered_begin(OPT_UNKNOWN), 1449 ie = Args->filtered_end(); it != ie; ++it) { 1450 Diags.Report(diag::err_drv_unknown_argument) << (*it)->getAsString(*Args); 1451 Success = false; 1452 } 1453 1454 // Issue errors on arguments that are not valid for CC1. 1455 for (ArgList::iterator I = Args->begin(), E = Args->end(); 1456 I != E; ++I) { 1457 if (!(*I)->getOption().hasFlag(options::CC1Option)) { 1458 Diags.Report(diag::err_drv_unknown_argument) << (*I)->getAsString(*Args); 1459 Success = false; 1460 } 1461 } 1462 1463 Success = ParseAnalyzerArgs(*Res.getAnalyzerOpts(), *Args, Diags) && Success; 1464 Success = ParseMigratorArgs(Res.getMigratorOpts(), *Args) && Success; 1465 ParseDependencyOutputArgs(Res.getDependencyOutputOpts(), *Args); 1466 Success = ParseDiagnosticArgs(Res.getDiagnosticOpts(), *Args, &Diags) 1467 && Success; 1468 ParseFileSystemArgs(Res.getFileSystemOpts(), *Args); 1469 // FIXME: We shouldn't have to pass the DashX option around here 1470 InputKind DashX = ParseFrontendArgs(Res.getFrontendOpts(), *Args, Diags); 1471 Success = ParseCodeGenArgs(Res.getCodeGenOpts(), *Args, DashX, Diags) 1472 && Success; 1473 ParseHeaderSearchArgs(Res.getHeaderSearchOpts(), *Args); 1474 if (DashX != IK_AST && DashX != IK_LLVM_IR) { 1475 ParseLangArgs(*Res.getLangOpts(), *Args, DashX, Diags); 1476 if (Res.getFrontendOpts().ProgramAction == frontend::RewriteObjC) 1477 Res.getLangOpts()->ObjCExceptions = 1; 1478 } 1479 // FIXME: ParsePreprocessorArgs uses the FileManager to read the contents of 1480 // PCH file and find the original header name. Remove the need to do that in 1481 // ParsePreprocessorArgs and remove the FileManager 1482 // parameters from the function and the "FileManager.h" #include. 1483 FileManager FileMgr(Res.getFileSystemOpts()); 1484 ParsePreprocessorArgs(Res.getPreprocessorOpts(), *Args, FileMgr, Diags); 1485 ParsePreprocessorOutputArgs(Res.getPreprocessorOutputOpts(), *Args); 1486 ParseTargetArgs(Res.getTargetOpts(), *Args); 1487 1488 return Success; 1489 } 1490 1491 namespace { 1492 1493 class ModuleSignature { 1494 llvm::SmallVector<uint64_t, 16> Data; 1495 unsigned CurBit; 1496 uint64_t CurValue; 1497 1498 public: 1499 ModuleSignature() : CurBit(0), CurValue(0) { } 1500 1501 void add(uint64_t Value, unsigned Bits); 1502 void add(StringRef Value); 1503 void flush(); 1504 1505 llvm::APInt getAsInteger() const; 1506 }; 1507 } 1508 1509 void ModuleSignature::add(uint64_t Value, unsigned int NumBits) { 1510 CurValue |= Value << CurBit; 1511 if (CurBit + NumBits < 64) { 1512 CurBit += NumBits; 1513 return; 1514 } 1515 1516 // Add the current word. 1517 Data.push_back(CurValue); 1518 1519 if (CurBit) 1520 CurValue = Value >> (64-CurBit); 1521 else 1522 CurValue = 0; 1523 CurBit = (CurBit+NumBits) & 63; 1524 } 1525 1526 void ModuleSignature::flush() { 1527 if (CurBit == 0) 1528 return; 1529 1530 Data.push_back(CurValue); 1531 CurBit = 0; 1532 CurValue = 0; 1533 } 1534 1535 void ModuleSignature::add(StringRef Value) { 1536 for (StringRef::iterator I = Value.begin(), IEnd = Value.end(); I != IEnd;++I) 1537 add(*I, 8); 1538 } 1539 1540 llvm::APInt ModuleSignature::getAsInteger() const { 1541 return llvm::APInt(Data.size() * 64, Data); 1542 } 1543 1544 std::string CompilerInvocation::getModuleHash() const { 1545 using llvm::hash_code; 1546 using llvm::hash_value; 1547 using llvm::hash_combine; 1548 1549 // Start the signature with the compiler version. 1550 // FIXME: We'd rather use something more cryptographically sound than 1551 // CityHash, but this will do for now. 1552 hash_code code = hash_value(getClangFullRepositoryVersion()); 1553 1554 // Extend the signature with the language options 1555 #define LANGOPT(Name, Bits, Default, Description) \ 1556 code = hash_combine(code, LangOpts->Name); 1557 #define ENUM_LANGOPT(Name, Type, Bits, Default, Description) \ 1558 code = hash_combine(code, static_cast<unsigned>(LangOpts->get##Name())); 1559 #define BENIGN_LANGOPT(Name, Bits, Default, Description) 1560 #define BENIGN_ENUM_LANGOPT(Name, Type, Bits, Default, Description) 1561 #include "clang/Basic/LangOptions.def" 1562 1563 // Extend the signature with the target options. 1564 code = hash_combine(code, TargetOpts->Triple, TargetOpts->CPU, 1565 TargetOpts->ABI, TargetOpts->CXXABI, 1566 TargetOpts->LinkerVersion); 1567 for (unsigned i = 0, n = TargetOpts->FeaturesAsWritten.size(); i != n; ++i) 1568 code = hash_combine(code, TargetOpts->FeaturesAsWritten[i]); 1569 1570 // Extend the signature with preprocessor options. 1571 const PreprocessorOptions &ppOpts = getPreprocessorOpts(); 1572 code = hash_combine(code, ppOpts.UsePredefines, ppOpts.DetailedRecord); 1573 1574 std::vector<StringRef> MacroDefs; 1575 for (std::vector<std::pair<std::string, bool/*isUndef*/> >::const_iterator 1576 I = getPreprocessorOpts().Macros.begin(), 1577 IEnd = getPreprocessorOpts().Macros.end(); 1578 I != IEnd; ++I) { 1579 code = hash_combine(code, I->first, I->second); 1580 } 1581 1582 // Extend the signature with the sysroot. 1583 const HeaderSearchOptions &hsOpts = getHeaderSearchOpts(); 1584 code = hash_combine(code, hsOpts.Sysroot, hsOpts.UseBuiltinIncludes, 1585 hsOpts.UseStandardSystemIncludes, 1586 hsOpts.UseStandardCXXIncludes, 1587 hsOpts.UseLibcxx); 1588 1589 return llvm::APInt(64, code).toString(36, /*Signed=*/false); 1590 } 1591