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 Opts.SanitizeRecover = Args.hasArg(OPT_fsanitize_recover); 397 398 Opts.InstrumentFunctions = Args.hasArg(OPT_finstrument_functions); 399 Opts.InstrumentForProfiling = Args.hasArg(OPT_pg); 400 Opts.EmitGcovArcs = Args.hasArg(OPT_femit_coverage_data); 401 Opts.EmitGcovNotes = Args.hasArg(OPT_femit_coverage_notes); 402 Opts.EmitOpenCLArgMetadata = Args.hasArg(OPT_cl_kernel_arg_info); 403 Opts.CoverageFile = Args.getLastArgValue(OPT_coverage_file); 404 Opts.DebugCompilationDir = Args.getLastArgValue(OPT_fdebug_compilation_dir); 405 Opts.LinkBitcodeFile = Args.getLastArgValue(OPT_mlink_bitcode_file); 406 Opts.SanitizerBlacklistFile = Args.getLastArgValue(OPT_fsanitize_blacklist); 407 Opts.SSPBufferSize = 408 Args.getLastArgIntValue(OPT_stack_protector_buffer_size, 8, Diags); 409 Opts.StackRealignment = Args.hasArg(OPT_mstackrealign); 410 if (Arg *A = Args.getLastArg(OPT_mstack_alignment)) { 411 StringRef Val = A->getValue(); 412 unsigned StackAlignment = Opts.StackAlignment; 413 Val.getAsInteger(10, StackAlignment); 414 Opts.StackAlignment = StackAlignment; 415 } 416 417 if (Arg *A = Args.getLastArg(OPT_fobjc_dispatch_method_EQ)) { 418 StringRef Name = A->getValue(); 419 unsigned Method = llvm::StringSwitch<unsigned>(Name) 420 .Case("legacy", CodeGenOptions::Legacy) 421 .Case("non-legacy", CodeGenOptions::NonLegacy) 422 .Case("mixed", CodeGenOptions::Mixed) 423 .Default(~0U); 424 if (Method == ~0U) { 425 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Name; 426 Success = false; 427 } else { 428 Opts.setObjCDispatchMethod( 429 static_cast<CodeGenOptions::ObjCDispatchMethodKind>(Method)); 430 } 431 } 432 433 if (Arg *A = Args.getLastArg(OPT_ftlsmodel_EQ)) { 434 StringRef Name = A->getValue(); 435 unsigned Model = llvm::StringSwitch<unsigned>(Name) 436 .Case("global-dynamic", CodeGenOptions::GeneralDynamicTLSModel) 437 .Case("local-dynamic", CodeGenOptions::LocalDynamicTLSModel) 438 .Case("initial-exec", CodeGenOptions::InitialExecTLSModel) 439 .Case("local-exec", CodeGenOptions::LocalExecTLSModel) 440 .Default(~0U); 441 if (Model == ~0U) { 442 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Name; 443 Success = false; 444 } else { 445 Opts.setDefaultTLSModel(static_cast<CodeGenOptions::TLSModel>(Model)); 446 } 447 } 448 449 if (Arg *A = Args.getLastArg(OPT_ffp_contract)) { 450 StringRef Val = A->getValue(); 451 if (Val == "fast") 452 Opts.setFPContractMode(CodeGenOptions::FPC_Fast); 453 else if (Val == "on") 454 Opts.setFPContractMode(CodeGenOptions::FPC_On); 455 else if (Val == "off") 456 Opts.setFPContractMode(CodeGenOptions::FPC_Off); 457 else 458 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Val; 459 } 460 461 return Success; 462 } 463 464 static void ParseDependencyOutputArgs(DependencyOutputOptions &Opts, 465 ArgList &Args) { 466 using namespace options; 467 Opts.OutputFile = Args.getLastArgValue(OPT_dependency_file); 468 Opts.Targets = Args.getAllArgValues(OPT_MT); 469 Opts.IncludeSystemHeaders = Args.hasArg(OPT_sys_header_deps); 470 Opts.UsePhonyTargets = Args.hasArg(OPT_MP); 471 Opts.ShowHeaderIncludes = Args.hasArg(OPT_H); 472 Opts.HeaderIncludeOutputFile = Args.getLastArgValue(OPT_header_include_file); 473 Opts.AddMissingHeaderDeps = Args.hasArg(OPT_MG); 474 Opts.DOTOutputFile = Args.getLastArgValue(OPT_dependency_dot); 475 } 476 477 bool clang::ParseDiagnosticArgs(DiagnosticOptions &Opts, ArgList &Args, 478 DiagnosticsEngine *Diags) { 479 using namespace options; 480 bool Success = true; 481 482 Opts.DiagnosticLogFile = Args.getLastArgValue(OPT_diagnostic_log_file); 483 Opts.DiagnosticSerializationFile = 484 Args.getLastArgValue(OPT_diagnostic_serialized_file); 485 Opts.IgnoreWarnings = Args.hasArg(OPT_w); 486 Opts.NoRewriteMacros = Args.hasArg(OPT_Wno_rewrite_macros); 487 Opts.Pedantic = Args.hasArg(OPT_pedantic); 488 Opts.PedanticErrors = Args.hasArg(OPT_pedantic_errors); 489 Opts.ShowCarets = !Args.hasArg(OPT_fno_caret_diagnostics); 490 Opts.ShowColors = Args.hasArg(OPT_fcolor_diagnostics); 491 Opts.ShowColumn = Args.hasFlag(OPT_fshow_column, 492 OPT_fno_show_column, 493 /*Default=*/true); 494 Opts.ShowFixits = !Args.hasArg(OPT_fno_diagnostics_fixit_info); 495 Opts.ShowLocation = !Args.hasArg(OPT_fno_show_source_location); 496 Opts.ShowOptionNames = Args.hasArg(OPT_fdiagnostics_show_option); 497 498 // Default behavior is to not to show note include stacks. 499 Opts.ShowNoteIncludeStack = false; 500 if (Arg *A = Args.getLastArg(OPT_fdiagnostics_show_note_include_stack, 501 OPT_fno_diagnostics_show_note_include_stack)) 502 if (A->getOption().matches(OPT_fdiagnostics_show_note_include_stack)) 503 Opts.ShowNoteIncludeStack = true; 504 505 StringRef ShowOverloads = 506 Args.getLastArgValue(OPT_fshow_overloads_EQ, "all"); 507 if (ShowOverloads == "best") 508 Opts.setShowOverloads(Ovl_Best); 509 else if (ShowOverloads == "all") 510 Opts.setShowOverloads(Ovl_All); 511 else { 512 Success = false; 513 if (Diags) 514 Diags->Report(diag::err_drv_invalid_value) 515 << Args.getLastArg(OPT_fshow_overloads_EQ)->getAsString(Args) 516 << ShowOverloads; 517 } 518 519 StringRef ShowCategory = 520 Args.getLastArgValue(OPT_fdiagnostics_show_category, "none"); 521 if (ShowCategory == "none") 522 Opts.ShowCategories = 0; 523 else if (ShowCategory == "id") 524 Opts.ShowCategories = 1; 525 else if (ShowCategory == "name") 526 Opts.ShowCategories = 2; 527 else { 528 Success = false; 529 if (Diags) 530 Diags->Report(diag::err_drv_invalid_value) 531 << Args.getLastArg(OPT_fdiagnostics_show_category)->getAsString(Args) 532 << ShowCategory; 533 } 534 535 StringRef Format = 536 Args.getLastArgValue(OPT_fdiagnostics_format, "clang"); 537 if (Format == "clang") 538 Opts.setFormat(DiagnosticOptions::Clang); 539 else if (Format == "msvc") 540 Opts.setFormat(DiagnosticOptions::Msvc); 541 else if (Format == "vi") 542 Opts.setFormat(DiagnosticOptions::Vi); 543 else { 544 Success = false; 545 if (Diags) 546 Diags->Report(diag::err_drv_invalid_value) 547 << Args.getLastArg(OPT_fdiagnostics_format)->getAsString(Args) 548 << Format; 549 } 550 551 Opts.ShowSourceRanges = Args.hasArg(OPT_fdiagnostics_print_source_range_info); 552 Opts.ShowParseableFixits = Args.hasArg(OPT_fdiagnostics_parseable_fixits); 553 Opts.ShowPresumedLoc = !Args.hasArg(OPT_fno_diagnostics_use_presumed_location); 554 Opts.VerifyDiagnostics = Args.hasArg(OPT_verify); 555 Opts.ElideType = !Args.hasArg(OPT_fno_elide_type); 556 Opts.ShowTemplateTree = Args.hasArg(OPT_fdiagnostics_show_template_tree); 557 Opts.ErrorLimit = Args.getLastArgIntValue(OPT_ferror_limit, 0, Diags); 558 Opts.MacroBacktraceLimit 559 = Args.getLastArgIntValue(OPT_fmacro_backtrace_limit, 560 DiagnosticOptions::DefaultMacroBacktraceLimit, Diags); 561 Opts.TemplateBacktraceLimit 562 = Args.getLastArgIntValue(OPT_ftemplate_backtrace_limit, 563 DiagnosticOptions::DefaultTemplateBacktraceLimit, 564 Diags); 565 Opts.ConstexprBacktraceLimit 566 = Args.getLastArgIntValue(OPT_fconstexpr_backtrace_limit, 567 DiagnosticOptions::DefaultConstexprBacktraceLimit, 568 Diags); 569 Opts.TabStop = Args.getLastArgIntValue(OPT_ftabstop, 570 DiagnosticOptions::DefaultTabStop, Diags); 571 if (Opts.TabStop == 0 || Opts.TabStop > DiagnosticOptions::MaxTabStop) { 572 Opts.TabStop = DiagnosticOptions::DefaultTabStop; 573 if (Diags) 574 Diags->Report(diag::warn_ignoring_ftabstop_value) 575 << Opts.TabStop << DiagnosticOptions::DefaultTabStop; 576 } 577 Opts.MessageLength = Args.getLastArgIntValue(OPT_fmessage_length, 0, Diags); 578 Opts.DumpBuildInformation = Args.getLastArgValue(OPT_dump_build_information); 579 addWarningArgs(Args, Opts.Warnings); 580 581 return Success; 582 } 583 584 static void ParseFileSystemArgs(FileSystemOptions &Opts, ArgList &Args) { 585 Opts.WorkingDir = Args.getLastArgValue(OPT_working_directory); 586 } 587 588 static InputKind ParseFrontendArgs(FrontendOptions &Opts, ArgList &Args, 589 DiagnosticsEngine &Diags) { 590 using namespace options; 591 Opts.ProgramAction = frontend::ParseSyntaxOnly; 592 if (const Arg *A = Args.getLastArg(OPT_Action_Group)) { 593 switch (A->getOption().getID()) { 594 default: 595 llvm_unreachable("Invalid option in group!"); 596 case OPT_ast_list: 597 Opts.ProgramAction = frontend::ASTDeclList; break; 598 case OPT_ast_dump: 599 Opts.ProgramAction = frontend::ASTDump; break; 600 case OPT_ast_dump_xml: 601 Opts.ProgramAction = frontend::ASTDumpXML; break; 602 case OPT_ast_print: 603 Opts.ProgramAction = frontend::ASTPrint; break; 604 case OPT_ast_view: 605 Opts.ProgramAction = frontend::ASTView; break; 606 case OPT_dump_raw_tokens: 607 Opts.ProgramAction = frontend::DumpRawTokens; break; 608 case OPT_dump_tokens: 609 Opts.ProgramAction = frontend::DumpTokens; break; 610 case OPT_S: 611 Opts.ProgramAction = frontend::EmitAssembly; break; 612 case OPT_emit_llvm_bc: 613 Opts.ProgramAction = frontend::EmitBC; break; 614 case OPT_emit_html: 615 Opts.ProgramAction = frontend::EmitHTML; break; 616 case OPT_emit_llvm: 617 Opts.ProgramAction = frontend::EmitLLVM; break; 618 case OPT_emit_llvm_only: 619 Opts.ProgramAction = frontend::EmitLLVMOnly; break; 620 case OPT_emit_codegen_only: 621 Opts.ProgramAction = frontend::EmitCodeGenOnly; break; 622 case OPT_emit_obj: 623 Opts.ProgramAction = frontend::EmitObj; break; 624 case OPT_fixit_EQ: 625 Opts.FixItSuffix = A->getValue(); 626 // fall-through! 627 case OPT_fixit: 628 Opts.ProgramAction = frontend::FixIt; break; 629 case OPT_emit_module: 630 Opts.ProgramAction = frontend::GenerateModule; break; 631 case OPT_emit_pch: 632 Opts.ProgramAction = frontend::GeneratePCH; break; 633 case OPT_emit_pth: 634 Opts.ProgramAction = frontend::GeneratePTH; break; 635 case OPT_init_only: 636 Opts.ProgramAction = frontend::InitOnly; break; 637 case OPT_fsyntax_only: 638 Opts.ProgramAction = frontend::ParseSyntaxOnly; break; 639 case OPT_print_decl_contexts: 640 Opts.ProgramAction = frontend::PrintDeclContext; break; 641 case OPT_print_preamble: 642 Opts.ProgramAction = frontend::PrintPreamble; break; 643 case OPT_E: 644 Opts.ProgramAction = frontend::PrintPreprocessedInput; break; 645 case OPT_rewrite_macros: 646 Opts.ProgramAction = frontend::RewriteMacros; break; 647 case OPT_rewrite_objc: 648 Opts.ProgramAction = frontend::RewriteObjC; break; 649 case OPT_rewrite_test: 650 Opts.ProgramAction = frontend::RewriteTest; break; 651 case OPT_analyze: 652 Opts.ProgramAction = frontend::RunAnalysis; break; 653 case OPT_migrate: 654 Opts.ProgramAction = frontend::MigrateSource; break; 655 case OPT_Eonly: 656 Opts.ProgramAction = frontend::RunPreprocessorOnly; break; 657 } 658 } 659 660 if (const Arg* A = Args.getLastArg(OPT_plugin)) { 661 Opts.Plugins.push_back(A->getValue(0)); 662 Opts.ProgramAction = frontend::PluginAction; 663 Opts.ActionName = A->getValue(); 664 665 for (arg_iterator it = Args.filtered_begin(OPT_plugin_arg), 666 end = Args.filtered_end(); it != end; ++it) { 667 if ((*it)->getValue(0) == Opts.ActionName) 668 Opts.PluginArgs.push_back((*it)->getValue(1)); 669 } 670 } 671 672 Opts.AddPluginActions = Args.getAllArgValues(OPT_add_plugin); 673 Opts.AddPluginArgs.resize(Opts.AddPluginActions.size()); 674 for (int i = 0, e = Opts.AddPluginActions.size(); i != e; ++i) { 675 for (arg_iterator it = Args.filtered_begin(OPT_plugin_arg), 676 end = Args.filtered_end(); it != end; ++it) { 677 if ((*it)->getValue(0) == Opts.AddPluginActions[i]) 678 Opts.AddPluginArgs[i].push_back((*it)->getValue(1)); 679 } 680 } 681 682 if (const Arg *A = Args.getLastArg(OPT_code_completion_at)) { 683 Opts.CodeCompletionAt = 684 ParsedSourceLocation::FromString(A->getValue()); 685 if (Opts.CodeCompletionAt.FileName.empty()) 686 Diags.Report(diag::err_drv_invalid_value) 687 << A->getAsString(Args) << A->getValue(); 688 } 689 Opts.DisableFree = Args.hasArg(OPT_disable_free); 690 691 Opts.OutputFile = Args.getLastArgValue(OPT_o); 692 Opts.Plugins = Args.getAllArgValues(OPT_load); 693 Opts.RelocatablePCH = Args.hasArg(OPT_relocatable_pch); 694 Opts.ShowHelp = Args.hasArg(OPT_help); 695 Opts.ShowStats = Args.hasArg(OPT_print_stats); 696 Opts.ShowTimers = Args.hasArg(OPT_ftime_report); 697 Opts.ShowVersion = Args.hasArg(OPT_version); 698 Opts.ASTMergeFiles = Args.getAllArgValues(OPT_ast_merge); 699 Opts.LLVMArgs = Args.getAllArgValues(OPT_mllvm); 700 Opts.FixWhatYouCan = Args.hasArg(OPT_fix_what_you_can); 701 Opts.FixOnlyWarnings = Args.hasArg(OPT_fix_only_warnings); 702 Opts.FixAndRecompile = Args.hasArg(OPT_fixit_recompile); 703 Opts.FixToTemporaries = Args.hasArg(OPT_fixit_to_temp); 704 Opts.ASTDumpFilter = Args.getLastArgValue(OPT_ast_dump_filter); 705 706 Opts.CodeCompleteOpts.IncludeMacros 707 = Args.hasArg(OPT_code_completion_macros); 708 Opts.CodeCompleteOpts.IncludeCodePatterns 709 = Args.hasArg(OPT_code_completion_patterns); 710 Opts.CodeCompleteOpts.IncludeGlobals 711 = !Args.hasArg(OPT_no_code_completion_globals); 712 Opts.CodeCompleteOpts.IncludeBriefComments 713 = Args.hasArg(OPT_code_completion_brief_comments); 714 715 Opts.OverrideRecordLayoutsFile 716 = Args.getLastArgValue(OPT_foverride_record_layout_EQ); 717 if (const Arg *A = Args.getLastArg(OPT_arcmt_check, 718 OPT_arcmt_modify, 719 OPT_arcmt_migrate)) { 720 switch (A->getOption().getID()) { 721 default: 722 llvm_unreachable("missed a case"); 723 case OPT_arcmt_check: 724 Opts.ARCMTAction = FrontendOptions::ARCMT_Check; 725 break; 726 case OPT_arcmt_modify: 727 Opts.ARCMTAction = FrontendOptions::ARCMT_Modify; 728 break; 729 case OPT_arcmt_migrate: 730 Opts.ARCMTAction = FrontendOptions::ARCMT_Migrate; 731 break; 732 } 733 } 734 Opts.MTMigrateDir = Args.getLastArgValue(OPT_mt_migrate_directory); 735 Opts.ARCMTMigrateReportOut 736 = Args.getLastArgValue(OPT_arcmt_migrate_report_output); 737 Opts.ARCMTMigrateEmitARCErrors 738 = Args.hasArg(OPT_arcmt_migrate_emit_arc_errors); 739 740 if (Args.hasArg(OPT_objcmt_migrate_literals)) 741 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_Literals; 742 if (Args.hasArg(OPT_objcmt_migrate_subscripting)) 743 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_Subscripting; 744 745 if (Opts.ARCMTAction != FrontendOptions::ARCMT_None && 746 Opts.ObjCMTAction != FrontendOptions::ObjCMT_None) { 747 Diags.Report(diag::err_drv_argument_not_allowed_with) 748 << "ARC migration" << "ObjC migration"; 749 } 750 751 InputKind DashX = IK_None; 752 if (const Arg *A = Args.getLastArg(OPT_x)) { 753 DashX = llvm::StringSwitch<InputKind>(A->getValue()) 754 .Case("c", IK_C) 755 .Case("cl", IK_OpenCL) 756 .Case("cuda", IK_CUDA) 757 .Case("c++", IK_CXX) 758 .Case("objective-c", IK_ObjC) 759 .Case("objective-c++", IK_ObjCXX) 760 .Case("cpp-output", IK_PreprocessedC) 761 .Case("assembler-with-cpp", IK_Asm) 762 .Case("c++-cpp-output", IK_PreprocessedCXX) 763 .Case("objective-c-cpp-output", IK_PreprocessedObjC) 764 .Case("objc-cpp-output", IK_PreprocessedObjC) 765 .Case("objective-c++-cpp-output", IK_PreprocessedObjCXX) 766 .Case("objc++-cpp-output", IK_PreprocessedObjCXX) 767 .Case("c-header", IK_C) 768 .Case("cl-header", IK_OpenCL) 769 .Case("objective-c-header", IK_ObjC) 770 .Case("c++-header", IK_CXX) 771 .Case("objective-c++-header", IK_ObjCXX) 772 .Case("ast", IK_AST) 773 .Case("ir", IK_LLVM_IR) 774 .Default(IK_None); 775 if (DashX == IK_None) 776 Diags.Report(diag::err_drv_invalid_value) 777 << A->getAsString(Args) << A->getValue(); 778 } 779 780 // '-' is the default input if none is given. 781 std::vector<std::string> Inputs = Args.getAllArgValues(OPT_INPUT); 782 Opts.Inputs.clear(); 783 if (Inputs.empty()) 784 Inputs.push_back("-"); 785 for (unsigned i = 0, e = Inputs.size(); i != e; ++i) { 786 InputKind IK = DashX; 787 if (IK == IK_None) { 788 IK = FrontendOptions::getInputKindForExtension( 789 StringRef(Inputs[i]).rsplit('.').second); 790 // FIXME: Remove this hack. 791 if (i == 0) 792 DashX = IK; 793 } 794 Opts.Inputs.push_back(FrontendInputFile(Inputs[i], IK)); 795 } 796 797 return DashX; 798 } 799 800 std::string CompilerInvocation::GetResourcesPath(const char *Argv0, 801 void *MainAddr) { 802 llvm::sys::Path P = llvm::sys::Path::GetMainExecutable(Argv0, MainAddr); 803 804 if (!P.isEmpty()) { 805 P.eraseComponent(); // Remove /clang from foo/bin/clang 806 P.eraseComponent(); // Remove /bin from foo/bin 807 808 // Get foo/lib/clang/<version>/include 809 P.appendComponent("lib"); 810 P.appendComponent("clang"); 811 P.appendComponent(CLANG_VERSION_STRING); 812 } 813 814 return P.str(); 815 } 816 817 static void ParseHeaderSearchArgs(HeaderSearchOptions &Opts, ArgList &Args) { 818 using namespace options; 819 Opts.Sysroot = Args.getLastArgValue(OPT_isysroot, "/"); 820 Opts.Verbose = Args.hasArg(OPT_v); 821 Opts.UseBuiltinIncludes = !Args.hasArg(OPT_nobuiltininc); 822 Opts.UseStandardSystemIncludes = !Args.hasArg(OPT_nostdsysteminc); 823 Opts.UseStandardCXXIncludes = !Args.hasArg(OPT_nostdincxx); 824 if (const Arg *A = Args.getLastArg(OPT_stdlib_EQ)) 825 Opts.UseLibcxx = (strcmp(A->getValue(), "libc++") == 0); 826 Opts.ResourceDir = Args.getLastArgValue(OPT_resource_dir); 827 Opts.ModuleCachePath = Args.getLastArgValue(OPT_fmodule_cache_path); 828 Opts.DisableModuleHash = Args.hasArg(OPT_fdisable_module_hash); 829 830 // Add -I..., -F..., and -index-header-map options in order. 831 bool IsIndexHeaderMap = false; 832 for (arg_iterator it = Args.filtered_begin(OPT_I, OPT_F, 833 OPT_index_header_map), 834 ie = Args.filtered_end(); it != ie; ++it) { 835 if ((*it)->getOption().matches(OPT_index_header_map)) { 836 // -index-header-map applies to the next -I or -F. 837 IsIndexHeaderMap = true; 838 continue; 839 } 840 841 frontend::IncludeDirGroup Group 842 = IsIndexHeaderMap? frontend::IndexHeaderMap : frontend::Angled; 843 844 Opts.AddPath((*it)->getValue(), Group, true, 845 /*IsFramework=*/ (*it)->getOption().matches(OPT_F), false); 846 IsIndexHeaderMap = false; 847 } 848 849 // Add -iprefix/-iwith-prefix/-iwithprefixbefore options. 850 StringRef Prefix = ""; // FIXME: This isn't the correct default prefix. 851 for (arg_iterator it = Args.filtered_begin(OPT_iprefix, OPT_iwithprefix, 852 OPT_iwithprefixbefore), 853 ie = Args.filtered_end(); it != ie; ++it) { 854 const Arg *A = *it; 855 if (A->getOption().matches(OPT_iprefix)) 856 Prefix = A->getValue(); 857 else if (A->getOption().matches(OPT_iwithprefix)) 858 Opts.AddPath(Prefix.str() + A->getValue(), 859 frontend::System, false, false, false); 860 else 861 Opts.AddPath(Prefix.str() + A->getValue(), 862 frontend::Angled, false, false, false); 863 } 864 865 for (arg_iterator it = Args.filtered_begin(OPT_idirafter), 866 ie = Args.filtered_end(); it != ie; ++it) 867 Opts.AddPath((*it)->getValue(), frontend::After, true, false, false); 868 for (arg_iterator it = Args.filtered_begin(OPT_iquote), 869 ie = Args.filtered_end(); it != ie; ++it) 870 Opts.AddPath((*it)->getValue(), frontend::Quoted, true, false, false); 871 for (arg_iterator it = Args.filtered_begin(OPT_isystem, 872 OPT_iwithsysroot), ie = Args.filtered_end(); it != ie; ++it) 873 Opts.AddPath((*it)->getValue(), frontend::System, true, false, 874 !(*it)->getOption().matches(OPT_iwithsysroot)); 875 for (arg_iterator it = Args.filtered_begin(OPT_iframework), 876 ie = Args.filtered_end(); it != ie; ++it) 877 Opts.AddPath((*it)->getValue(), frontend::System, true, true, 878 true); 879 880 // Add the paths for the various language specific isystem flags. 881 for (arg_iterator it = Args.filtered_begin(OPT_c_isystem), 882 ie = Args.filtered_end(); it != ie; ++it) 883 Opts.AddPath((*it)->getValue(), frontend::CSystem, true, false, true); 884 for (arg_iterator it = Args.filtered_begin(OPT_cxx_isystem), 885 ie = Args.filtered_end(); it != ie; ++it) 886 Opts.AddPath((*it)->getValue(), frontend::CXXSystem, true, false, true); 887 for (arg_iterator it = Args.filtered_begin(OPT_objc_isystem), 888 ie = Args.filtered_end(); it != ie; ++it) 889 Opts.AddPath((*it)->getValue(), frontend::ObjCSystem, true, false,true); 890 for (arg_iterator it = Args.filtered_begin(OPT_objcxx_isystem), 891 ie = Args.filtered_end(); it != ie; ++it) 892 Opts.AddPath((*it)->getValue(), frontend::ObjCXXSystem, true, false, 893 true); 894 895 // Add the internal paths from a driver that detects standard include paths. 896 for (arg_iterator I = Args.filtered_begin(OPT_internal_isystem, 897 OPT_internal_externc_isystem), 898 E = Args.filtered_end(); 899 I != E; ++I) 900 Opts.AddPath((*I)->getValue(), frontend::System, 901 false, false, /*IgnoreSysRoot=*/true, /*IsInternal=*/true, 902 (*I)->getOption().matches(OPT_internal_externc_isystem)); 903 904 // Add the path prefixes which are implicitly treated as being system headers. 905 for (arg_iterator I = Args.filtered_begin(OPT_isystem_prefix, 906 OPT_ino_system_prefix), 907 E = Args.filtered_end(); 908 I != E; ++I) 909 Opts.AddSystemHeaderPrefix((*I)->getValue(), 910 (*I)->getOption().matches(OPT_isystem_prefix)); 911 } 912 913 void CompilerInvocation::setLangDefaults(LangOptions &Opts, InputKind IK, 914 LangStandard::Kind LangStd) { 915 // Set some properties which depend solely on the input kind; it would be nice 916 // to move these to the language standard, and have the driver resolve the 917 // input kind + language standard. 918 if (IK == IK_Asm) { 919 Opts.AsmPreprocessor = 1; 920 } else if (IK == IK_ObjC || 921 IK == IK_ObjCXX || 922 IK == IK_PreprocessedObjC || 923 IK == IK_PreprocessedObjCXX) { 924 Opts.ObjC1 = Opts.ObjC2 = 1; 925 } 926 927 if (LangStd == LangStandard::lang_unspecified) { 928 // Based on the base language, pick one. 929 switch (IK) { 930 case IK_None: 931 case IK_AST: 932 case IK_LLVM_IR: 933 llvm_unreachable("Invalid input kind!"); 934 case IK_OpenCL: 935 LangStd = LangStandard::lang_opencl; 936 break; 937 case IK_CUDA: 938 LangStd = LangStandard::lang_cuda; 939 break; 940 case IK_Asm: 941 case IK_C: 942 case IK_PreprocessedC: 943 case IK_ObjC: 944 case IK_PreprocessedObjC: 945 LangStd = LangStandard::lang_gnu99; 946 break; 947 case IK_CXX: 948 case IK_PreprocessedCXX: 949 case IK_ObjCXX: 950 case IK_PreprocessedObjCXX: 951 LangStd = LangStandard::lang_gnucxx98; 952 break; 953 } 954 } 955 956 const LangStandard &Std = LangStandard::getLangStandardForKind(LangStd); 957 Opts.LineComment = Std.hasLineComments(); 958 Opts.C99 = Std.isC99(); 959 Opts.C11 = Std.isC11(); 960 Opts.CPlusPlus = Std.isCPlusPlus(); 961 Opts.CPlusPlus0x = Std.isCPlusPlus0x(); 962 Opts.CPlusPlus1y = Std.isCPlusPlus1y(); 963 Opts.Digraphs = Std.hasDigraphs(); 964 Opts.GNUMode = Std.isGNUMode(); 965 Opts.GNUInline = !Std.isC99(); 966 Opts.HexFloats = Std.hasHexFloats(); 967 Opts.ImplicitInt = Std.hasImplicitInt(); 968 969 // Set OpenCL Version. 970 if (LangStd == LangStandard::lang_opencl) { 971 Opts.OpenCL = 1; 972 Opts.OpenCLVersion = 100; 973 } 974 else if (LangStd == LangStandard::lang_opencl11) { 975 Opts.OpenCL = 1; 976 Opts.OpenCLVersion = 110; 977 } 978 else if (LangStd == LangStandard::lang_opencl12) { 979 Opts.OpenCL = 1; 980 Opts.OpenCLVersion = 120; 981 } 982 983 // OpenCL has some additional defaults. 984 if (Opts.OpenCL) { 985 Opts.AltiVec = 0; 986 Opts.CXXOperatorNames = 1; 987 Opts.LaxVectorConversions = 0; 988 Opts.DefaultFPContract = 1; 989 } 990 991 if (LangStd == LangStandard::lang_cuda) 992 Opts.CUDA = 1; 993 994 // OpenCL and C++ both have bool, true, false keywords. 995 Opts.Bool = Opts.OpenCL || Opts.CPlusPlus; 996 997 // C++ has wchar_t keyword. 998 Opts.WChar = Opts.CPlusPlus; 999 1000 Opts.GNUKeywords = Opts.GNUMode; 1001 Opts.CXXOperatorNames = Opts.CPlusPlus; 1002 1003 // Mimicing gcc's behavior, trigraphs are only enabled if -trigraphs 1004 // is specified, or -std is set to a conforming mode. 1005 Opts.Trigraphs = !Opts.GNUMode; 1006 1007 Opts.DollarIdents = !Opts.AsmPreprocessor; 1008 } 1009 1010 static void ParseLangArgs(LangOptions &Opts, ArgList &Args, InputKind IK, 1011 DiagnosticsEngine &Diags) { 1012 // FIXME: Cleanup per-file based stuff. 1013 LangStandard::Kind LangStd = LangStandard::lang_unspecified; 1014 if (const Arg *A = Args.getLastArg(OPT_std_EQ)) { 1015 LangStd = llvm::StringSwitch<LangStandard::Kind>(A->getValue()) 1016 #define LANGSTANDARD(id, name, desc, features) \ 1017 .Case(name, LangStandard::lang_##id) 1018 #include "clang/Frontend/LangStandards.def" 1019 .Default(LangStandard::lang_unspecified); 1020 if (LangStd == LangStandard::lang_unspecified) 1021 Diags.Report(diag::err_drv_invalid_value) 1022 << A->getAsString(Args) << A->getValue(); 1023 else { 1024 // Valid standard, check to make sure language and standard are compatable. 1025 const LangStandard &Std = LangStandard::getLangStandardForKind(LangStd); 1026 switch (IK) { 1027 case IK_C: 1028 case IK_ObjC: 1029 case IK_PreprocessedC: 1030 case IK_PreprocessedObjC: 1031 if (!(Std.isC89() || Std.isC99())) 1032 Diags.Report(diag::err_drv_argument_not_allowed_with) 1033 << A->getAsString(Args) << "C/ObjC"; 1034 break; 1035 case IK_CXX: 1036 case IK_ObjCXX: 1037 case IK_PreprocessedCXX: 1038 case IK_PreprocessedObjCXX: 1039 if (!Std.isCPlusPlus()) 1040 Diags.Report(diag::err_drv_argument_not_allowed_with) 1041 << A->getAsString(Args) << "C++/ObjC++"; 1042 break; 1043 case IK_OpenCL: 1044 if (!Std.isC99()) 1045 Diags.Report(diag::err_drv_argument_not_allowed_with) 1046 << A->getAsString(Args) << "OpenCL"; 1047 break; 1048 case IK_CUDA: 1049 if (!Std.isCPlusPlus()) 1050 Diags.Report(diag::err_drv_argument_not_allowed_with) 1051 << A->getAsString(Args) << "CUDA"; 1052 break; 1053 default: 1054 break; 1055 } 1056 } 1057 } 1058 1059 // -cl-std only applies for OpenCL language standards. 1060 // Override the -std option in this case. 1061 if (const Arg *A = Args.getLastArg(OPT_cl_std_EQ)) { 1062 LangStandard::Kind OpenCLLangStd 1063 = llvm::StringSwitch<LangStandard::Kind>(A->getValue()) 1064 .Case("CL", LangStandard::lang_opencl) 1065 .Case("CL1.1", LangStandard::lang_opencl11) 1066 .Case("CL1.2", LangStandard::lang_opencl12) 1067 .Default(LangStandard::lang_unspecified); 1068 1069 if (OpenCLLangStd == LangStandard::lang_unspecified) { 1070 Diags.Report(diag::err_drv_invalid_value) 1071 << A->getAsString(Args) << A->getValue(); 1072 } 1073 else 1074 LangStd = OpenCLLangStd; 1075 } 1076 1077 CompilerInvocation::setLangDefaults(Opts, IK, LangStd); 1078 1079 // We abuse '-f[no-]gnu-keywords' to force overriding all GNU-extension 1080 // keywords. This behavior is provided by GCC's poorly named '-fasm' flag, 1081 // while a subset (the non-C++ GNU keywords) is provided by GCC's 1082 // '-fgnu-keywords'. Clang conflates the two for simplicity under the single 1083 // name, as it doesn't seem a useful distinction. 1084 Opts.GNUKeywords = Args.hasFlag(OPT_fgnu_keywords, OPT_fno_gnu_keywords, 1085 Opts.GNUKeywords); 1086 1087 if (Args.hasArg(OPT_fno_operator_names)) 1088 Opts.CXXOperatorNames = 0; 1089 1090 if (Opts.ObjC1) { 1091 if (Arg *arg = Args.getLastArg(OPT_fobjc_runtime_EQ)) { 1092 StringRef value = arg->getValue(); 1093 if (Opts.ObjCRuntime.tryParse(value)) 1094 Diags.Report(diag::err_drv_unknown_objc_runtime) << value; 1095 } 1096 1097 if (Args.hasArg(OPT_fobjc_gc_only)) 1098 Opts.setGC(LangOptions::GCOnly); 1099 else if (Args.hasArg(OPT_fobjc_gc)) 1100 Opts.setGC(LangOptions::HybridGC); 1101 else if (Args.hasArg(OPT_fobjc_arc)) { 1102 Opts.ObjCAutoRefCount = 1; 1103 if (!Opts.ObjCRuntime.allowsARC()) 1104 Diags.Report(diag::err_arc_unsupported_on_runtime); 1105 1106 // Only set ObjCARCWeak if ARC is enabled. 1107 if (Args.hasArg(OPT_fobjc_runtime_has_weak)) 1108 Opts.ObjCARCWeak = 1; 1109 else 1110 Opts.ObjCARCWeak = Opts.ObjCRuntime.allowsWeak(); 1111 } 1112 1113 if (Args.hasArg(OPT_fno_objc_infer_related_result_type)) 1114 Opts.ObjCInferRelatedResultType = 0; 1115 } 1116 1117 if (Args.hasArg(OPT_fgnu89_inline)) 1118 Opts.GNUInline = 1; 1119 1120 if (Args.hasArg(OPT_fapple_kext)) { 1121 if (!Opts.CPlusPlus) 1122 Diags.Report(diag::warn_c_kext); 1123 else 1124 Opts.AppleKext = 1; 1125 } 1126 1127 if (Args.hasArg(OPT_print_ivar_layout)) 1128 Opts.ObjCGCBitmapPrint = 1; 1129 if (Args.hasArg(OPT_fno_constant_cfstrings)) 1130 Opts.NoConstantCFStrings = 1; 1131 1132 if (Args.hasArg(OPT_faltivec)) 1133 Opts.AltiVec = 1; 1134 1135 if (Args.hasArg(OPT_pthread)) 1136 Opts.POSIXThreads = 1; 1137 1138 if (Args.hasArg(OPT_fdelayed_template_parsing)) 1139 Opts.DelayedTemplateParsing = 1; 1140 1141 StringRef Vis = Args.getLastArgValue(OPT_fvisibility, "default"); 1142 if (Vis == "default") 1143 Opts.setVisibilityMode(DefaultVisibility); 1144 else if (Vis == "hidden") 1145 Opts.setVisibilityMode(HiddenVisibility); 1146 else if (Vis == "protected") 1147 // FIXME: diagnose if target does not support protected visibility 1148 Opts.setVisibilityMode(ProtectedVisibility); 1149 else 1150 Diags.Report(diag::err_drv_invalid_value) 1151 << Args.getLastArg(OPT_fvisibility)->getAsString(Args) << Vis; 1152 1153 if (Args.hasArg(OPT_fvisibility_inlines_hidden)) 1154 Opts.InlineVisibilityHidden = 1; 1155 1156 if (Args.hasArg(OPT_ftrapv)) { 1157 Opts.setSignedOverflowBehavior(LangOptions::SOB_Trapping); 1158 // Set the handler, if one is specified. 1159 Opts.OverflowHandler = 1160 Args.getLastArgValue(OPT_ftrapv_handler); 1161 } 1162 else if (Args.hasArg(OPT_fwrapv)) 1163 Opts.setSignedOverflowBehavior(LangOptions::SOB_Defined); 1164 1165 if (Args.hasArg(OPT_trigraphs)) 1166 Opts.Trigraphs = 1; 1167 1168 Opts.DollarIdents = Args.hasFlag(OPT_fdollars_in_identifiers, 1169 OPT_fno_dollars_in_identifiers, 1170 Opts.DollarIdents); 1171 Opts.PascalStrings = Args.hasArg(OPT_fpascal_strings); 1172 Opts.MicrosoftExt 1173 = Args.hasArg(OPT_fms_extensions) || Args.hasArg(OPT_fms_compatibility); 1174 Opts.MicrosoftMode = Args.hasArg(OPT_fms_compatibility); 1175 Opts.MSCVersion = Args.getLastArgIntValue(OPT_fmsc_version, 0, Diags); 1176 Opts.Borland = Args.hasArg(OPT_fborland_extensions); 1177 Opts.WritableStrings = Args.hasArg(OPT_fwritable_strings); 1178 Opts.ConstStrings = Args.hasFlag(OPT_fconst_strings, OPT_fno_const_strings, 1179 Opts.ConstStrings); 1180 if (Args.hasArg(OPT_fno_lax_vector_conversions)) 1181 Opts.LaxVectorConversions = 0; 1182 if (Args.hasArg(OPT_fno_threadsafe_statics)) 1183 Opts.ThreadsafeStatics = 0; 1184 Opts.Exceptions = Args.hasArg(OPT_fexceptions); 1185 Opts.ObjCExceptions = Args.hasArg(OPT_fobjc_exceptions); 1186 Opts.CXXExceptions = Args.hasArg(OPT_fcxx_exceptions); 1187 Opts.SjLjExceptions = Args.hasArg(OPT_fsjlj_exceptions); 1188 Opts.TraditionalCPP = Args.hasArg(OPT_traditional_cpp); 1189 1190 Opts.RTTI = !Args.hasArg(OPT_fno_rtti); 1191 Opts.Blocks = Args.hasArg(OPT_fblocks); 1192 Opts.BlocksRuntimeOptional = Args.hasArg(OPT_fblocks_runtime_optional); 1193 Opts.Modules = Args.hasArg(OPT_fmodules); 1194 Opts.CharIsSigned = !Args.hasArg(OPT_fno_signed_char); 1195 Opts.WChar = Opts.CPlusPlus && !Args.hasArg(OPT_fno_wchar); 1196 Opts.ShortWChar = Args.hasArg(OPT_fshort_wchar); 1197 Opts.ShortEnums = Args.hasArg(OPT_fshort_enums); 1198 Opts.Freestanding = Args.hasArg(OPT_ffreestanding); 1199 Opts.NoBuiltin = Args.hasArg(OPT_fno_builtin) || Opts.Freestanding; 1200 Opts.AssumeSaneOperatorNew = !Args.hasArg(OPT_fno_assume_sane_operator_new); 1201 Opts.HeinousExtensions = Args.hasArg(OPT_fheinous_gnu_extensions); 1202 Opts.AccessControl = !Args.hasArg(OPT_fno_access_control); 1203 Opts.ElideConstructors = !Args.hasArg(OPT_fno_elide_constructors); 1204 Opts.MathErrno = Args.hasArg(OPT_fmath_errno); 1205 Opts.InstantiationDepth = Args.getLastArgIntValue(OPT_ftemplate_depth, 512, 1206 Diags); 1207 Opts.ConstexprCallDepth = Args.getLastArgIntValue(OPT_fconstexpr_depth, 512, 1208 Diags); 1209 Opts.DelayedTemplateParsing = Args.hasArg(OPT_fdelayed_template_parsing); 1210 Opts.NumLargeByValueCopy = Args.getLastArgIntValue(OPT_Wlarge_by_value_copy_EQ, 1211 0, Diags); 1212 Opts.MSBitfields = Args.hasArg(OPT_mms_bitfields); 1213 Opts.ObjCConstantStringClass = 1214 Args.getLastArgValue(OPT_fconstant_string_class); 1215 Opts.ObjCDefaultSynthProperties = 1216 Args.hasArg(OPT_fobjc_default_synthesize_properties); 1217 Opts.EncodeExtendedBlockSig = 1218 Args.hasArg(OPT_fencode_extended_block_signature); 1219 Opts.EmitAllDecls = Args.hasArg(OPT_femit_all_decls); 1220 Opts.PackStruct = Args.getLastArgIntValue(OPT_fpack_struct_EQ, 0, Diags); 1221 Opts.PICLevel = Args.getLastArgIntValue(OPT_pic_level, 0, Diags); 1222 Opts.PIELevel = Args.getLastArgIntValue(OPT_pie_level, 0, Diags); 1223 Opts.Static = Args.hasArg(OPT_static_define); 1224 Opts.DumpRecordLayoutsSimple = Args.hasArg(OPT_fdump_record_layouts_simple); 1225 Opts.DumpRecordLayouts = Opts.DumpRecordLayoutsSimple 1226 || Args.hasArg(OPT_fdump_record_layouts); 1227 Opts.DumpVTableLayouts = Args.hasArg(OPT_fdump_vtable_layouts); 1228 Opts.SpellChecking = !Args.hasArg(OPT_fno_spell_checking); 1229 Opts.NoBitFieldTypeAlign = Args.hasArg(OPT_fno_bitfield_type_align); 1230 Opts.SinglePrecisionConstants = Args.hasArg(OPT_cl_single_precision_constant); 1231 Opts.FastRelaxedMath = Args.hasArg(OPT_cl_fast_relaxed_math); 1232 Opts.MRTD = Args.hasArg(OPT_mrtd); 1233 Opts.HexagonQdsp6Compat = Args.hasArg(OPT_mqdsp6_compat); 1234 Opts.FakeAddressSpaceMap = Args.hasArg(OPT_ffake_address_space_map); 1235 Opts.ParseUnknownAnytype = Args.hasArg(OPT_funknown_anytype); 1236 Opts.DebuggerSupport = Args.hasArg(OPT_fdebugger_support); 1237 Opts.DebuggerCastResultToId = Args.hasArg(OPT_fdebugger_cast_result_to_id); 1238 Opts.DebuggerObjCLiteral = Args.hasArg(OPT_fdebugger_objc_literal); 1239 Opts.ApplePragmaPack = Args.hasArg(OPT_fapple_pragma_pack); 1240 Opts.CurrentModule = Args.getLastArgValue(OPT_fmodule_name); 1241 1242 // Record whether the __DEPRECATED define was requested. 1243 Opts.Deprecated = Args.hasFlag(OPT_fdeprecated_macro, 1244 OPT_fno_deprecated_macro, 1245 Opts.Deprecated); 1246 1247 // FIXME: Eliminate this dependency. 1248 unsigned Opt = getOptimizationLevel(Args, IK, Diags), 1249 OptSize = getOptimizationLevelSize(Args, IK, Diags); 1250 Opts.Optimize = Opt != 0; 1251 Opts.OptimizeSize = OptSize != 0; 1252 1253 // This is the __NO_INLINE__ define, which just depends on things like the 1254 // optimization level and -fno-inline, not actually whether the backend has 1255 // inlining enabled. 1256 Opts.NoInlineDefine = !Opt || Args.hasArg(OPT_fno_inline); 1257 1258 Opts.FastMath = Args.hasArg(OPT_ffast_math); 1259 Opts.FiniteMathOnly = Args.hasArg(OPT_ffinite_math_only); 1260 1261 Opts.EmitMicrosoftInlineAsm = Args.hasArg(OPT_fenable_experimental_ms_inline_asm); 1262 1263 Opts.RetainCommentsFromSystemHeaders = 1264 Args.hasArg(OPT_fretain_comments_from_system_headers); 1265 1266 unsigned SSP = Args.getLastArgIntValue(OPT_stack_protector, 0, Diags); 1267 switch (SSP) { 1268 default: 1269 Diags.Report(diag::err_drv_invalid_value) 1270 << Args.getLastArg(OPT_stack_protector)->getAsString(Args) << SSP; 1271 break; 1272 case 0: Opts.setStackProtector(LangOptions::SSPOff); break; 1273 case 1: Opts.setStackProtector(LangOptions::SSPOn); break; 1274 case 2: Opts.setStackProtector(LangOptions::SSPReq); break; 1275 } 1276 1277 // Parse -fsanitize= arguments. 1278 std::vector<std::string> Sanitizers = Args.getAllArgValues(OPT_fsanitize_EQ); 1279 for (unsigned I = 0, N = Sanitizers.size(); I != N; ++I) { 1280 // Since the Opts.Sanitize* values are bitfields, it's a little tricky to 1281 // efficiently map string values to them. Perform the mapping indirectly: 1282 // convert strings to enumerated values, then switch over the enum to set 1283 // the right bitfield value. 1284 enum Sanitizer { 1285 #define SANITIZER(NAME, ID) \ 1286 ID, 1287 #include "clang/Basic/Sanitizers.def" 1288 Unknown 1289 }; 1290 switch (llvm::StringSwitch<unsigned>(Sanitizers[I]) 1291 #define SANITIZER(NAME, ID) \ 1292 .Case(NAME, ID) 1293 #include "clang/Basic/Sanitizers.def" 1294 .Default(Unknown)) { 1295 #define SANITIZER(NAME, ID) \ 1296 case ID: \ 1297 Opts.Sanitize##ID = true; \ 1298 break; 1299 #include "clang/Basic/Sanitizers.def" 1300 1301 case Unknown: 1302 Diags.Report(diag::err_drv_invalid_value) 1303 << "-fsanitize=" << Sanitizers[I]; 1304 break; 1305 } 1306 } 1307 } 1308 1309 static void ParsePreprocessorArgs(PreprocessorOptions &Opts, ArgList &Args, 1310 FileManager &FileMgr, 1311 DiagnosticsEngine &Diags) { 1312 using namespace options; 1313 Opts.ImplicitPCHInclude = Args.getLastArgValue(OPT_include_pch); 1314 Opts.ImplicitPTHInclude = Args.getLastArgValue(OPT_include_pth); 1315 if (const Arg *A = Args.getLastArg(OPT_token_cache)) 1316 Opts.TokenCache = A->getValue(); 1317 else 1318 Opts.TokenCache = Opts.ImplicitPTHInclude; 1319 Opts.UsePredefines = !Args.hasArg(OPT_undef); 1320 Opts.DetailedRecord = Args.hasArg(OPT_detailed_preprocessing_record); 1321 Opts.DisablePCHValidation = Args.hasArg(OPT_fno_validate_pch); 1322 1323 Opts.DumpDeserializedPCHDecls = Args.hasArg(OPT_dump_deserialized_pch_decls); 1324 for (arg_iterator it = Args.filtered_begin(OPT_error_on_deserialized_pch_decl), 1325 ie = Args.filtered_end(); it != ie; ++it) { 1326 const Arg *A = *it; 1327 Opts.DeserializedPCHDeclsToErrorOn.insert(A->getValue()); 1328 } 1329 1330 if (const Arg *A = Args.getLastArg(OPT_preamble_bytes_EQ)) { 1331 StringRef Value(A->getValue()); 1332 size_t Comma = Value.find(','); 1333 unsigned Bytes = 0; 1334 unsigned EndOfLine = 0; 1335 1336 if (Comma == StringRef::npos || 1337 Value.substr(0, Comma).getAsInteger(10, Bytes) || 1338 Value.substr(Comma + 1).getAsInteger(10, EndOfLine)) 1339 Diags.Report(diag::err_drv_preamble_format); 1340 else { 1341 Opts.PrecompiledPreambleBytes.first = Bytes; 1342 Opts.PrecompiledPreambleBytes.second = (EndOfLine != 0); 1343 } 1344 } 1345 1346 // Add macros from the command line. 1347 for (arg_iterator it = Args.filtered_begin(OPT_D, OPT_U), 1348 ie = Args.filtered_end(); it != ie; ++it) { 1349 if ((*it)->getOption().matches(OPT_D)) 1350 Opts.addMacroDef((*it)->getValue()); 1351 else 1352 Opts.addMacroUndef((*it)->getValue()); 1353 } 1354 1355 Opts.MacroIncludes = Args.getAllArgValues(OPT_imacros); 1356 1357 // Add the ordered list of -includes. 1358 for (arg_iterator it = Args.filtered_begin(OPT_include, OPT_include_pch, 1359 OPT_include_pth), 1360 ie = Args.filtered_end(); it != ie; ++it) { 1361 const Arg *A = *it; 1362 Opts.Includes.push_back(A->getValue()); 1363 } 1364 1365 for (arg_iterator it = Args.filtered_begin(OPT_chain_include), 1366 ie = Args.filtered_end(); it != ie; ++it) { 1367 const Arg *A = *it; 1368 Opts.ChainedIncludes.push_back(A->getValue()); 1369 } 1370 1371 // Include 'altivec.h' if -faltivec option present 1372 if (Args.hasArg(OPT_faltivec)) 1373 Opts.Includes.push_back("altivec.h"); 1374 1375 for (arg_iterator it = Args.filtered_begin(OPT_remap_file), 1376 ie = Args.filtered_end(); it != ie; ++it) { 1377 const Arg *A = *it; 1378 std::pair<StringRef,StringRef> Split = 1379 StringRef(A->getValue()).split(';'); 1380 1381 if (Split.second.empty()) { 1382 Diags.Report(diag::err_drv_invalid_remap_file) << A->getAsString(Args); 1383 continue; 1384 } 1385 1386 Opts.addRemappedFile(Split.first, Split.second); 1387 } 1388 1389 if (Arg *A = Args.getLastArg(OPT_fobjc_arc_cxxlib_EQ)) { 1390 StringRef Name = A->getValue(); 1391 unsigned Library = llvm::StringSwitch<unsigned>(Name) 1392 .Case("libc++", ARCXX_libcxx) 1393 .Case("libstdc++", ARCXX_libstdcxx) 1394 .Case("none", ARCXX_nolib) 1395 .Default(~0U); 1396 if (Library == ~0U) 1397 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Name; 1398 else 1399 Opts.ObjCXXARCStandardLibrary = (ObjCXXARCStandardLibraryKind)Library; 1400 } 1401 } 1402 1403 static void ParsePreprocessorOutputArgs(PreprocessorOutputOptions &Opts, 1404 ArgList &Args) { 1405 using namespace options; 1406 Opts.ShowCPP = !Args.hasArg(OPT_dM); 1407 Opts.ShowComments = Args.hasArg(OPT_C); 1408 Opts.ShowLineMarkers = !Args.hasArg(OPT_P); 1409 Opts.ShowMacroComments = Args.hasArg(OPT_CC); 1410 Opts.ShowMacros = Args.hasArg(OPT_dM) || Args.hasArg(OPT_dD); 1411 Opts.RewriteIncludes = Args.hasArg(OPT_frewrite_includes); 1412 } 1413 1414 static void ParseTargetArgs(TargetOptions &Opts, ArgList &Args) { 1415 using namespace options; 1416 Opts.ABI = Args.getLastArgValue(OPT_target_abi); 1417 Opts.CXXABI = Args.getLastArgValue(OPT_cxx_abi); 1418 Opts.CPU = Args.getLastArgValue(OPT_target_cpu); 1419 Opts.FeaturesAsWritten = Args.getAllArgValues(OPT_target_feature); 1420 Opts.LinkerVersion = Args.getLastArgValue(OPT_target_linker_version); 1421 Opts.Triple = llvm::Triple::normalize(Args.getLastArgValue(OPT_triple)); 1422 1423 // Use the default target triple if unspecified. 1424 if (Opts.Triple.empty()) 1425 Opts.Triple = llvm::sys::getDefaultTargetTriple(); 1426 } 1427 1428 // 1429 1430 bool CompilerInvocation::CreateFromArgs(CompilerInvocation &Res, 1431 const char *const *ArgBegin, 1432 const char *const *ArgEnd, 1433 DiagnosticsEngine &Diags) { 1434 bool Success = true; 1435 1436 // Parse the arguments. 1437 OwningPtr<OptTable> Opts(createDriverOptTable()); 1438 unsigned MissingArgIndex, MissingArgCount; 1439 OwningPtr<InputArgList> Args( 1440 Opts->ParseArgs(ArgBegin, ArgEnd,MissingArgIndex, MissingArgCount)); 1441 1442 // Check for missing argument error. 1443 if (MissingArgCount) { 1444 Diags.Report(diag::err_drv_missing_argument) 1445 << Args->getArgString(MissingArgIndex) << MissingArgCount; 1446 Success = false; 1447 } 1448 1449 // Issue errors on unknown arguments. 1450 for (arg_iterator it = Args->filtered_begin(OPT_UNKNOWN), 1451 ie = Args->filtered_end(); it != ie; ++it) { 1452 Diags.Report(diag::err_drv_unknown_argument) << (*it)->getAsString(*Args); 1453 Success = false; 1454 } 1455 1456 // Issue errors on arguments that are not valid for CC1. 1457 for (ArgList::iterator I = Args->begin(), E = Args->end(); 1458 I != E; ++I) { 1459 if (!(*I)->getOption().hasFlag(options::CC1Option)) { 1460 Diags.Report(diag::err_drv_unknown_argument) << (*I)->getAsString(*Args); 1461 Success = false; 1462 } 1463 } 1464 1465 Success = ParseAnalyzerArgs(*Res.getAnalyzerOpts(), *Args, Diags) && Success; 1466 Success = ParseMigratorArgs(Res.getMigratorOpts(), *Args) && Success; 1467 ParseDependencyOutputArgs(Res.getDependencyOutputOpts(), *Args); 1468 Success = ParseDiagnosticArgs(Res.getDiagnosticOpts(), *Args, &Diags) 1469 && Success; 1470 ParseFileSystemArgs(Res.getFileSystemOpts(), *Args); 1471 // FIXME: We shouldn't have to pass the DashX option around here 1472 InputKind DashX = ParseFrontendArgs(Res.getFrontendOpts(), *Args, Diags); 1473 Success = ParseCodeGenArgs(Res.getCodeGenOpts(), *Args, DashX, Diags) 1474 && Success; 1475 ParseHeaderSearchArgs(Res.getHeaderSearchOpts(), *Args); 1476 if (DashX != IK_AST && DashX != IK_LLVM_IR) { 1477 ParseLangArgs(*Res.getLangOpts(), *Args, DashX, Diags); 1478 if (Res.getFrontendOpts().ProgramAction == frontend::RewriteObjC) 1479 Res.getLangOpts()->ObjCExceptions = 1; 1480 } 1481 // FIXME: ParsePreprocessorArgs uses the FileManager to read the contents of 1482 // PCH file and find the original header name. Remove the need to do that in 1483 // ParsePreprocessorArgs and remove the FileManager 1484 // parameters from the function and the "FileManager.h" #include. 1485 FileManager FileMgr(Res.getFileSystemOpts()); 1486 ParsePreprocessorArgs(Res.getPreprocessorOpts(), *Args, FileMgr, Diags); 1487 ParsePreprocessorOutputArgs(Res.getPreprocessorOutputOpts(), *Args); 1488 ParseTargetArgs(Res.getTargetOpts(), *Args); 1489 1490 return Success; 1491 } 1492 1493 namespace { 1494 1495 class ModuleSignature { 1496 llvm::SmallVector<uint64_t, 16> Data; 1497 unsigned CurBit; 1498 uint64_t CurValue; 1499 1500 public: 1501 ModuleSignature() : CurBit(0), CurValue(0) { } 1502 1503 void add(uint64_t Value, unsigned Bits); 1504 void add(StringRef Value); 1505 void flush(); 1506 1507 llvm::APInt getAsInteger() const; 1508 }; 1509 } 1510 1511 void ModuleSignature::add(uint64_t Value, unsigned int NumBits) { 1512 CurValue |= Value << CurBit; 1513 if (CurBit + NumBits < 64) { 1514 CurBit += NumBits; 1515 return; 1516 } 1517 1518 // Add the current word. 1519 Data.push_back(CurValue); 1520 1521 if (CurBit) 1522 CurValue = Value >> (64-CurBit); 1523 else 1524 CurValue = 0; 1525 CurBit = (CurBit+NumBits) & 63; 1526 } 1527 1528 void ModuleSignature::flush() { 1529 if (CurBit == 0) 1530 return; 1531 1532 Data.push_back(CurValue); 1533 CurBit = 0; 1534 CurValue = 0; 1535 } 1536 1537 void ModuleSignature::add(StringRef Value) { 1538 for (StringRef::iterator I = Value.begin(), IEnd = Value.end(); I != IEnd;++I) 1539 add(*I, 8); 1540 } 1541 1542 llvm::APInt ModuleSignature::getAsInteger() const { 1543 return llvm::APInt(Data.size() * 64, Data); 1544 } 1545 1546 std::string CompilerInvocation::getModuleHash() const { 1547 using llvm::hash_code; 1548 using llvm::hash_value; 1549 using llvm::hash_combine; 1550 1551 // Start the signature with the compiler version. 1552 // FIXME: We'd rather use something more cryptographically sound than 1553 // CityHash, but this will do for now. 1554 hash_code code = hash_value(getClangFullRepositoryVersion()); 1555 1556 // Extend the signature with the language options 1557 #define LANGOPT(Name, Bits, Default, Description) \ 1558 code = hash_combine(code, LangOpts->Name); 1559 #define ENUM_LANGOPT(Name, Type, Bits, Default, Description) \ 1560 code = hash_combine(code, static_cast<unsigned>(LangOpts->get##Name())); 1561 #define BENIGN_LANGOPT(Name, Bits, Default, Description) 1562 #define BENIGN_ENUM_LANGOPT(Name, Type, Bits, Default, Description) 1563 #include "clang/Basic/LangOptions.def" 1564 1565 // Extend the signature with the target options. 1566 code = hash_combine(code, TargetOpts->Triple, TargetOpts->CPU, 1567 TargetOpts->ABI, TargetOpts->CXXABI, 1568 TargetOpts->LinkerVersion); 1569 for (unsigned i = 0, n = TargetOpts->FeaturesAsWritten.size(); i != n; ++i) 1570 code = hash_combine(code, TargetOpts->FeaturesAsWritten[i]); 1571 1572 // Extend the signature with preprocessor options. 1573 const PreprocessorOptions &ppOpts = getPreprocessorOpts(); 1574 code = hash_combine(code, ppOpts.UsePredefines, ppOpts.DetailedRecord); 1575 1576 std::vector<StringRef> MacroDefs; 1577 for (std::vector<std::pair<std::string, bool/*isUndef*/> >::const_iterator 1578 I = getPreprocessorOpts().Macros.begin(), 1579 IEnd = getPreprocessorOpts().Macros.end(); 1580 I != IEnd; ++I) { 1581 code = hash_combine(code, I->first, I->second); 1582 } 1583 1584 // Extend the signature with the sysroot. 1585 const HeaderSearchOptions &hsOpts = getHeaderSearchOpts(); 1586 code = hash_combine(code, hsOpts.Sysroot, hsOpts.UseBuiltinIncludes, 1587 hsOpts.UseStandardSystemIncludes, 1588 hsOpts.UseStandardCXXIncludes, 1589 hsOpts.UseLibcxx); 1590 1591 return llvm::APInt(64, code).toString(36, /*Signed=*/false); 1592 } 1593