1 //===--- CompilerInvocation.cpp -------------------------------------------===// 2 // 3 // The LLVM Compiler Infrastructure 4 // 5 // This file is distributed under the University of Illinois Open Source 6 // License. See LICENSE.TXT for details. 7 // 8 //===----------------------------------------------------------------------===// 9 10 #include "clang/Frontend/CompilerInvocation.h" 11 #include "clang/Basic/Diagnostic.h" 12 #include "clang/Basic/FileManager.h" 13 #include "clang/Basic/Version.h" 14 #include "clang/Driver/Arg.h" 15 #include "clang/Driver/ArgList.h" 16 #include "clang/Driver/DriverDiagnostic.h" 17 #include "clang/Driver/OptTable.h" 18 #include "clang/Driver/Option.h" 19 #include "clang/Driver/Options.h" 20 #include "clang/Frontend/LangStandard.h" 21 #include "clang/Lex/HeaderSearchOptions.h" 22 #include "clang/Serialization/ASTReader.h" 23 #include "llvm/ADT/Hashing.h" 24 #include "llvm/ADT/OwningPtr.h" 25 #include "llvm/ADT/SmallVector.h" 26 #include "llvm/ADT/StringExtras.h" 27 #include "llvm/ADT/StringSwitch.h" 28 #include "llvm/ADT/Triple.h" 29 #include "llvm/Support/ErrorHandling.h" 30 #include "llvm/Support/Host.h" 31 #include "llvm/Support/Path.h" 32 using namespace clang; 33 34 //===----------------------------------------------------------------------===// 35 // Initialization. 36 //===----------------------------------------------------------------------===// 37 38 CompilerInvocationBase::CompilerInvocationBase() 39 : LangOpts(new LangOptions()), TargetOpts(new TargetOptions()), 40 DiagnosticOpts(new DiagnosticOptions()), 41 HeaderSearchOpts(new HeaderSearchOptions()), 42 PreprocessorOpts(new PreprocessorOptions()) {} 43 44 CompilerInvocationBase::CompilerInvocationBase(const CompilerInvocationBase &X) 45 : RefCountedBase<CompilerInvocation>(), 46 LangOpts(new LangOptions(*X.getLangOpts())), 47 TargetOpts(new TargetOptions(X.getTargetOpts())), 48 DiagnosticOpts(new DiagnosticOptions(X.getDiagnosticOpts())), 49 HeaderSearchOpts(new HeaderSearchOptions(X.getHeaderSearchOpts())), 50 PreprocessorOpts(new PreprocessorOptions(X.getPreprocessorOpts())) {} 51 52 //===----------------------------------------------------------------------===// 53 // Deserialization (from args) 54 //===----------------------------------------------------------------------===// 55 56 using namespace clang::driver; 57 using namespace clang::driver::options; 58 59 // 60 61 static unsigned getOptimizationLevel(ArgList &Args, InputKind IK, 62 DiagnosticsEngine &Diags) { 63 unsigned DefaultOpt = 0; 64 if (IK == IK_OpenCL && !Args.hasArg(OPT_cl_opt_disable)) 65 DefaultOpt = 2; 66 67 if (Arg *A = Args.getLastArg(options::OPT_O_Group)) { 68 if (A->getOption().matches(options::OPT_O0)) 69 return 0; 70 71 if (A->getOption().matches(options::OPT_Ofast)) 72 return 3; 73 74 assert (A->getOption().matches(options::OPT_O)); 75 76 StringRef S(A->getValue()); 77 if (S == "s" || S == "z" || S.empty()) 78 return 2; 79 80 return Args.getLastArgIntValue(OPT_O, DefaultOpt, Diags); 81 } 82 83 return DefaultOpt; 84 } 85 86 static unsigned getOptimizationLevelSize(ArgList &Args) { 87 if (Arg *A = Args.getLastArg(options::OPT_O_Group)) { 88 if (A->getOption().matches(options::OPT_O)) { 89 switch (A->getValue()[0]) { 90 default: 91 return 0; 92 case 's': 93 return 1; 94 case 'z': 95 return 2; 96 } 97 } 98 } 99 return 0; 100 } 101 102 static bool isOptimizationLevelFast(ArgList &Args) { 103 if (Arg *A = Args.getLastArg(options::OPT_O_Group)) 104 if (A->getOption().matches(options::OPT_Ofast)) 105 return true; 106 return false; 107 } 108 109 static void addWarningArgs(ArgList &Args, std::vector<std::string> &Warnings) { 110 for (arg_iterator I = Args.filtered_begin(OPT_W_Group), 111 E = Args.filtered_end(); I != E; ++I) { 112 Arg *A = *I; 113 // If the argument is a pure flag, add its name (minus the "W" at the beginning) 114 // to the warning list. Else, add its value (for the OPT_W case). 115 if (A->getOption().getKind() == Option::FlagClass) { 116 Warnings.push_back(A->getOption().getName().substr(1)); 117 } else { 118 for (unsigned Idx = 0, End = A->getNumValues(); 119 Idx < End; ++Idx) { 120 StringRef V = A->getValue(Idx); 121 // "-Wl," and such are not warning options. 122 // FIXME: Should be handled by putting these in separate flags. 123 if (V.startswith("l,") || V.startswith("a,") || V.startswith("p,")) 124 continue; 125 126 Warnings.push_back(V); 127 } 128 } 129 } 130 } 131 132 static bool ParseAnalyzerArgs(AnalyzerOptions &Opts, ArgList &Args, 133 DiagnosticsEngine &Diags) { 134 using namespace options; 135 bool Success = true; 136 if (Arg *A = Args.getLastArg(OPT_analyzer_store)) { 137 StringRef Name = A->getValue(); 138 AnalysisStores Value = llvm::StringSwitch<AnalysisStores>(Name) 139 #define ANALYSIS_STORE(NAME, CMDFLAG, DESC, CREATFN) \ 140 .Case(CMDFLAG, NAME##Model) 141 #include "clang/StaticAnalyzer/Core/Analyses.def" 142 .Default(NumStores); 143 if (Value == NumStores) { 144 Diags.Report(diag::err_drv_invalid_value) 145 << A->getAsString(Args) << Name; 146 Success = false; 147 } else { 148 Opts.AnalysisStoreOpt = Value; 149 } 150 } 151 152 if (Arg *A = Args.getLastArg(OPT_analyzer_constraints)) { 153 StringRef Name = A->getValue(); 154 AnalysisConstraints Value = llvm::StringSwitch<AnalysisConstraints>(Name) 155 #define ANALYSIS_CONSTRAINTS(NAME, CMDFLAG, DESC, CREATFN) \ 156 .Case(CMDFLAG, NAME##Model) 157 #include "clang/StaticAnalyzer/Core/Analyses.def" 158 .Default(NumConstraints); 159 if (Value == NumConstraints) { 160 Diags.Report(diag::err_drv_invalid_value) 161 << A->getAsString(Args) << Name; 162 Success = false; 163 } else { 164 Opts.AnalysisConstraintsOpt = Value; 165 } 166 } 167 168 if (Arg *A = Args.getLastArg(OPT_analyzer_output)) { 169 StringRef Name = A->getValue(); 170 AnalysisDiagClients Value = llvm::StringSwitch<AnalysisDiagClients>(Name) 171 #define ANALYSIS_DIAGNOSTICS(NAME, CMDFLAG, DESC, CREATFN, AUTOCREAT) \ 172 .Case(CMDFLAG, PD_##NAME) 173 #include "clang/StaticAnalyzer/Core/Analyses.def" 174 .Default(NUM_ANALYSIS_DIAG_CLIENTS); 175 if (Value == NUM_ANALYSIS_DIAG_CLIENTS) { 176 Diags.Report(diag::err_drv_invalid_value) 177 << A->getAsString(Args) << Name; 178 Success = false; 179 } else { 180 Opts.AnalysisDiagOpt = Value; 181 } 182 } 183 184 if (Arg *A = Args.getLastArg(OPT_analyzer_purge)) { 185 StringRef Name = A->getValue(); 186 AnalysisPurgeMode Value = llvm::StringSwitch<AnalysisPurgeMode>(Name) 187 #define ANALYSIS_PURGE(NAME, CMDFLAG, DESC) \ 188 .Case(CMDFLAG, NAME) 189 #include "clang/StaticAnalyzer/Core/Analyses.def" 190 .Default(NumPurgeModes); 191 if (Value == NumPurgeModes) { 192 Diags.Report(diag::err_drv_invalid_value) 193 << A->getAsString(Args) << Name; 194 Success = false; 195 } else { 196 Opts.AnalysisPurgeOpt = Value; 197 } 198 } 199 200 if (Arg *A = Args.getLastArg(OPT_analyzer_inlining_mode)) { 201 StringRef Name = A->getValue(); 202 AnalysisInliningMode Value = llvm::StringSwitch<AnalysisInliningMode>(Name) 203 #define ANALYSIS_INLINING_MODE(NAME, CMDFLAG, DESC) \ 204 .Case(CMDFLAG, NAME) 205 #include "clang/StaticAnalyzer/Core/Analyses.def" 206 .Default(NumInliningModes); 207 if (Value == NumInliningModes) { 208 Diags.Report(diag::err_drv_invalid_value) 209 << A->getAsString(Args) << Name; 210 Success = false; 211 } else { 212 Opts.InliningMode = Value; 213 } 214 } 215 216 Opts.ShowCheckerHelp = Args.hasArg(OPT_analyzer_checker_help); 217 Opts.visualizeExplodedGraphWithGraphViz = 218 Args.hasArg(OPT_analyzer_viz_egraph_graphviz); 219 Opts.visualizeExplodedGraphWithUbiGraph = 220 Args.hasArg(OPT_analyzer_viz_egraph_ubigraph); 221 Opts.NoRetryExhausted = Args.hasArg(OPT_analyzer_disable_retry_exhausted); 222 Opts.AnalyzeAll = Args.hasArg(OPT_analyzer_opt_analyze_headers); 223 Opts.AnalyzerDisplayProgress = Args.hasArg(OPT_analyzer_display_progress); 224 Opts.AnalyzeNestedBlocks = 225 Args.hasArg(OPT_analyzer_opt_analyze_nested_blocks); 226 Opts.eagerlyAssumeBinOpBifurcation = Args.hasArg(OPT_analyzer_eagerly_assume); 227 Opts.AnalyzeSpecificFunction = Args.getLastArgValue(OPT_analyze_function); 228 Opts.UnoptimizedCFG = Args.hasArg(OPT_analysis_UnoptimizedCFG); 229 Opts.TrimGraph = Args.hasArg(OPT_trim_egraph); 230 Opts.maxBlockVisitOnPath = Args.getLastArgIntValue(OPT_analyzer_max_loop, 4, Diags); 231 Opts.PrintStats = Args.hasArg(OPT_analyzer_stats); 232 Opts.InlineMaxStackDepth = 233 Args.getLastArgIntValue(OPT_analyzer_inline_max_stack_depth, 234 Opts.InlineMaxStackDepth, Diags); 235 236 Opts.CheckersControlList.clear(); 237 for (arg_iterator it = Args.filtered_begin(OPT_analyzer_checker, 238 OPT_analyzer_disable_checker), 239 ie = Args.filtered_end(); it != ie; ++it) { 240 const Arg *A = *it; 241 A->claim(); 242 bool enable = (A->getOption().getID() == OPT_analyzer_checker); 243 // We can have a list of comma separated checker names, e.g: 244 // '-analyzer-checker=cocoa,unix' 245 StringRef checkerList = A->getValue(); 246 SmallVector<StringRef, 4> checkers; 247 checkerList.split(checkers, ","); 248 for (unsigned i = 0, e = checkers.size(); i != e; ++i) 249 Opts.CheckersControlList.push_back(std::make_pair(checkers[i], enable)); 250 } 251 252 // Go through the analyzer configuration options. 253 for (arg_iterator it = Args.filtered_begin(OPT_analyzer_config), 254 ie = Args.filtered_end(); it != ie; ++it) { 255 const Arg *A = *it; 256 A->claim(); 257 // We can have a list of comma separated config names, e.g: 258 // '-analyzer-config key1=val1,key2=val2' 259 StringRef configList = A->getValue(); 260 SmallVector<StringRef, 4> configVals; 261 configList.split(configVals, ","); 262 for (unsigned i = 0, e = configVals.size(); i != e; ++i) { 263 StringRef key, val; 264 llvm::tie(key, val) = configVals[i].split("="); 265 if (val.empty()) { 266 Diags.Report(SourceLocation(), 267 diag::err_analyzer_config_no_value) << configVals[i]; 268 Success = false; 269 break; 270 } 271 if (val.find('=') != StringRef::npos) { 272 Diags.Report(SourceLocation(), 273 diag::err_analyzer_config_multiple_values) 274 << configVals[i]; 275 Success = false; 276 break; 277 } 278 Opts.Config[key] = val; 279 } 280 } 281 282 return Success; 283 } 284 285 static bool ParseMigratorArgs(MigratorOptions &Opts, ArgList &Args) { 286 Opts.NoNSAllocReallocError = Args.hasArg(OPT_migrator_no_nsalloc_error); 287 Opts.NoFinalizeRemoval = Args.hasArg(OPT_migrator_no_finalize_removal); 288 return true; 289 } 290 291 static void ParseCommentArgs(CommentOptions &Opts, ArgList &Args) { 292 Opts.BlockCommandNames = Args.getAllArgValues(OPT_fcomment_block_commands); 293 Opts.ParseAllComments = Args.hasArg(OPT_fparse_all_comments); 294 } 295 296 static bool ParseCodeGenArgs(CodeGenOptions &Opts, ArgList &Args, InputKind IK, 297 DiagnosticsEngine &Diags) { 298 using namespace options; 299 bool Success = true; 300 301 unsigned OptLevel = getOptimizationLevel(Args, IK, Diags); 302 if (OptLevel > 3) { 303 Diags.Report(diag::err_drv_invalid_value) 304 << Args.getLastArg(OPT_O)->getAsString(Args) << OptLevel; 305 OptLevel = 3; 306 Success = false; 307 } 308 Opts.OptimizationLevel = OptLevel; 309 310 // We must always run at least the always inlining pass. 311 Opts.setInlining( 312 (Opts.OptimizationLevel > 1) ? CodeGenOptions::NormalInlining 313 : CodeGenOptions::OnlyAlwaysInlining); 314 // -fno-inline-functions overrides OptimizationLevel > 1. 315 Opts.NoInline = Args.hasArg(OPT_fno_inline); 316 Opts.setInlining(Args.hasArg(OPT_fno_inline_functions) ? 317 CodeGenOptions::OnlyAlwaysInlining : Opts.getInlining()); 318 319 if (Args.hasArg(OPT_gline_tables_only)) { 320 Opts.setDebugInfo(CodeGenOptions::DebugLineTablesOnly); 321 } else if (Args.hasArg(OPT_g_Flag)) { 322 if (Args.hasFlag(OPT_flimit_debug_info, OPT_fno_limit_debug_info, true)) 323 Opts.setDebugInfo(CodeGenOptions::LimitedDebugInfo); 324 else 325 Opts.setDebugInfo(CodeGenOptions::FullDebugInfo); 326 } 327 Opts.DebugColumnInfo = Args.hasArg(OPT_dwarf_column_info); 328 Opts.SplitDwarfFile = Args.getLastArgValue(OPT_split_dwarf_file); 329 330 Opts.ModulesAutolink = Args.hasArg(OPT_fmodules_autolink); 331 Opts.DisableLLVMOpts = Args.hasArg(OPT_disable_llvm_optzns); 332 Opts.DisableRedZone = Args.hasArg(OPT_disable_red_zone); 333 Opts.ForbidGuardVariables = Args.hasArg(OPT_fforbid_guard_variables); 334 Opts.UseRegisterSizedBitfieldAccess = Args.hasArg( 335 OPT_fuse_register_sized_bitfield_access); 336 Opts.RelaxedAliasing = Args.hasArg(OPT_relaxed_aliasing) || 337 isOptimizationLevelFast(Args); 338 Opts.StructPathTBAA = Args.hasArg(OPT_struct_path_tbaa); 339 Opts.DwarfDebugFlags = Args.getLastArgValue(OPT_dwarf_debug_flags); 340 Opts.MergeAllConstants = !Args.hasArg(OPT_fno_merge_all_constants); 341 Opts.NoCommon = Args.hasArg(OPT_fno_common); 342 Opts.NoImplicitFloat = Args.hasArg(OPT_no_implicit_float); 343 Opts.OptimizeSize = getOptimizationLevelSize(Args); 344 Opts.SimplifyLibCalls = !(Args.hasArg(OPT_fno_builtin) || 345 Args.hasArg(OPT_ffreestanding)); 346 Opts.UnrollLoops = Args.hasArg(OPT_funroll_loops) || 347 (Opts.OptimizationLevel > 1 && !Opts.OptimizeSize); 348 349 Opts.AsmVerbose = Args.hasArg(OPT_masm_verbose); 350 Opts.ObjCAutoRefCountExceptions = Args.hasArg(OPT_fobjc_arc_exceptions); 351 Opts.CUDAIsDevice = Args.hasArg(OPT_fcuda_is_device); 352 Opts.CXAAtExit = !Args.hasArg(OPT_fno_use_cxa_atexit); 353 Opts.CXXCtorDtorAliases = Args.hasArg(OPT_mconstructor_aliases); 354 Opts.CodeModel = Args.getLastArgValue(OPT_mcode_model); 355 Opts.DebugPass = Args.getLastArgValue(OPT_mdebug_pass); 356 Opts.DisableFPElim = Args.hasArg(OPT_mdisable_fp_elim); 357 Opts.DisableTailCalls = Args.hasArg(OPT_mdisable_tail_calls); 358 Opts.FloatABI = Args.getLastArgValue(OPT_mfloat_abi); 359 Opts.HiddenWeakVTables = Args.hasArg(OPT_fhidden_weak_vtables); 360 Opts.LessPreciseFPMAD = Args.hasArg(OPT_cl_mad_enable); 361 Opts.LimitFloatPrecision = Args.getLastArgValue(OPT_mlimit_float_precision); 362 Opts.NoInfsFPMath = (Args.hasArg(OPT_menable_no_infinities) || 363 Args.hasArg(OPT_cl_finite_math_only)|| 364 Args.hasArg(OPT_cl_fast_relaxed_math)); 365 Opts.NoNaNsFPMath = (Args.hasArg(OPT_menable_no_nans) || 366 Args.hasArg(OPT_cl_finite_math_only)|| 367 Args.hasArg(OPT_cl_fast_relaxed_math)); 368 Opts.NoZeroInitializedInBSS = Args.hasArg(OPT_mno_zero_initialized_in_bss); 369 Opts.BackendOptions = Args.getAllArgValues(OPT_backend_option); 370 Opts.NumRegisterParameters = Args.getLastArgIntValue(OPT_mregparm, 0, Diags); 371 Opts.NoGlobalMerge = Args.hasArg(OPT_mno_global_merge); 372 Opts.NoExecStack = Args.hasArg(OPT_mno_exec_stack); 373 Opts.EnableSegmentedStacks = Args.hasArg(OPT_split_stacks); 374 Opts.RelaxAll = Args.hasArg(OPT_mrelax_all); 375 Opts.OmitLeafFramePointer = Args.hasArg(OPT_momit_leaf_frame_pointer); 376 Opts.SaveTempLabels = Args.hasArg(OPT_msave_temp_labels); 377 Opts.NoDwarf2CFIAsm = Args.hasArg(OPT_fno_dwarf2_cfi_asm); 378 Opts.NoDwarfDirectoryAsm = Args.hasArg(OPT_fno_dwarf_directory_asm); 379 Opts.SoftFloat = Args.hasArg(OPT_msoft_float); 380 Opts.StrictEnums = Args.hasArg(OPT_fstrict_enums); 381 Opts.UnsafeFPMath = Args.hasArg(OPT_menable_unsafe_fp_math) || 382 Args.hasArg(OPT_cl_unsafe_math_optimizations) || 383 Args.hasArg(OPT_cl_fast_relaxed_math); 384 Opts.UnwindTables = Args.hasArg(OPT_munwind_tables); 385 Opts.RelocationModel = Args.getLastArgValue(OPT_mrelocation_model, "pic"); 386 Opts.TrapFuncName = Args.getLastArgValue(OPT_ftrap_function_EQ); 387 Opts.UseInitArray = Args.hasArg(OPT_fuse_init_array); 388 389 Opts.FunctionSections = Args.hasArg(OPT_ffunction_sections); 390 Opts.DataSections = Args.hasArg(OPT_fdata_sections); 391 392 Opts.MainFileName = Args.getLastArgValue(OPT_main_file_name); 393 Opts.VerifyModule = !Args.hasArg(OPT_disable_llvm_verifier); 394 Opts.SanitizeRecover = !Args.hasArg(OPT_fno_sanitize_recover); 395 396 Opts.DisableGCov = Args.hasArg(OPT_test_coverage); 397 Opts.EmitGcovArcs = Args.hasArg(OPT_femit_coverage_data); 398 Opts.EmitGcovNotes = Args.hasArg(OPT_femit_coverage_notes); 399 if (Opts.EmitGcovArcs || Opts.EmitGcovNotes) { 400 Opts.CoverageFile = Args.getLastArgValue(OPT_coverage_file); 401 Opts.CoverageExtraChecksum = Args.hasArg(OPT_coverage_cfg_checksum); 402 Opts.CoverageNoFunctionNamesInData = 403 Args.hasArg(OPT_coverage_no_function_names_in_data); 404 if (Args.hasArg(OPT_coverage_version_EQ)) { 405 StringRef CoverageVersion = Args.getLastArgValue(OPT_coverage_version_EQ); 406 if (CoverageVersion.size() != 4) { 407 Diags.Report(diag::err_drv_invalid_value) 408 << Args.getLastArg(OPT_coverage_version_EQ)->getAsString(Args) 409 << CoverageVersion; 410 } else { 411 memcpy(Opts.CoverageVersion, CoverageVersion.data(), 4); 412 } 413 } 414 } 415 416 Opts.InstrumentFunctions = Args.hasArg(OPT_finstrument_functions); 417 Opts.InstrumentForProfiling = Args.hasArg(OPT_pg); 418 Opts.EmitOpenCLArgMetadata = Args.hasArg(OPT_cl_kernel_arg_info); 419 Opts.DebugCompilationDir = Args.getLastArgValue(OPT_fdebug_compilation_dir); 420 Opts.LinkBitcodeFile = Args.getLastArgValue(OPT_mlink_bitcode_file); 421 Opts.SanitizerBlacklistFile = Args.getLastArgValue(OPT_fsanitize_blacklist); 422 Opts.SanitizeMemoryTrackOrigins = 423 Args.hasArg(OPT_fsanitize_memory_track_origins); 424 Opts.SanitizeAddressZeroBaseShadow = 425 Args.hasArg(OPT_fsanitize_address_zero_base_shadow); 426 Opts.SanitizeUndefinedTrapOnError = 427 Args.hasArg(OPT_fsanitize_undefined_trap_on_error); 428 Opts.SSPBufferSize = 429 Args.getLastArgIntValue(OPT_stack_protector_buffer_size, 8, Diags); 430 Opts.StackRealignment = Args.hasArg(OPT_mstackrealign); 431 if (Arg *A = Args.getLastArg(OPT_mstack_alignment)) { 432 StringRef Val = A->getValue(); 433 unsigned StackAlignment = Opts.StackAlignment; 434 Val.getAsInteger(10, StackAlignment); 435 Opts.StackAlignment = StackAlignment; 436 } 437 438 if (Arg *A = Args.getLastArg(OPT_fobjc_dispatch_method_EQ)) { 439 StringRef Name = A->getValue(); 440 unsigned Method = llvm::StringSwitch<unsigned>(Name) 441 .Case("legacy", CodeGenOptions::Legacy) 442 .Case("non-legacy", CodeGenOptions::NonLegacy) 443 .Case("mixed", CodeGenOptions::Mixed) 444 .Default(~0U); 445 if (Method == ~0U) { 446 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Name; 447 Success = false; 448 } else { 449 Opts.setObjCDispatchMethod( 450 static_cast<CodeGenOptions::ObjCDispatchMethodKind>(Method)); 451 } 452 } 453 454 if (Arg *A = Args.getLastArg(OPT_ftlsmodel_EQ)) { 455 StringRef Name = A->getValue(); 456 unsigned Model = llvm::StringSwitch<unsigned>(Name) 457 .Case("global-dynamic", CodeGenOptions::GeneralDynamicTLSModel) 458 .Case("local-dynamic", CodeGenOptions::LocalDynamicTLSModel) 459 .Case("initial-exec", CodeGenOptions::InitialExecTLSModel) 460 .Case("local-exec", CodeGenOptions::LocalExecTLSModel) 461 .Default(~0U); 462 if (Model == ~0U) { 463 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Name; 464 Success = false; 465 } else { 466 Opts.setDefaultTLSModel(static_cast<CodeGenOptions::TLSModel>(Model)); 467 } 468 } 469 470 if (Arg *A = Args.getLastArg(OPT_ffp_contract)) { 471 StringRef Val = A->getValue(); 472 if (Val == "fast") 473 Opts.setFPContractMode(CodeGenOptions::FPC_Fast); 474 else if (Val == "on") 475 Opts.setFPContractMode(CodeGenOptions::FPC_On); 476 else if (Val == "off") 477 Opts.setFPContractMode(CodeGenOptions::FPC_Off); 478 else 479 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Val; 480 } 481 482 return Success; 483 } 484 485 static void ParseDependencyOutputArgs(DependencyOutputOptions &Opts, 486 ArgList &Args) { 487 using namespace options; 488 Opts.OutputFile = Args.getLastArgValue(OPT_dependency_file); 489 Opts.Targets = Args.getAllArgValues(OPT_MT); 490 Opts.IncludeSystemHeaders = Args.hasArg(OPT_sys_header_deps); 491 Opts.UsePhonyTargets = Args.hasArg(OPT_MP); 492 Opts.ShowHeaderIncludes = Args.hasArg(OPT_H); 493 Opts.HeaderIncludeOutputFile = Args.getLastArgValue(OPT_header_include_file); 494 Opts.AddMissingHeaderDeps = Args.hasArg(OPT_MG); 495 Opts.DOTOutputFile = Args.getLastArgValue(OPT_dependency_dot); 496 } 497 498 bool clang::ParseDiagnosticArgs(DiagnosticOptions &Opts, ArgList &Args, 499 DiagnosticsEngine *Diags) { 500 using namespace options; 501 bool Success = true; 502 503 Opts.DiagnosticLogFile = Args.getLastArgValue(OPT_diagnostic_log_file); 504 Opts.DiagnosticSerializationFile = 505 Args.getLastArgValue(OPT_diagnostic_serialized_file); 506 Opts.IgnoreWarnings = Args.hasArg(OPT_w); 507 Opts.NoRewriteMacros = Args.hasArg(OPT_Wno_rewrite_macros); 508 Opts.Pedantic = Args.hasArg(OPT_pedantic); 509 Opts.PedanticErrors = Args.hasArg(OPT_pedantic_errors); 510 Opts.ShowCarets = !Args.hasArg(OPT_fno_caret_diagnostics); 511 Opts.ShowColors = Args.hasArg(OPT_fcolor_diagnostics); 512 Opts.ShowColumn = Args.hasFlag(OPT_fshow_column, 513 OPT_fno_show_column, 514 /*Default=*/true); 515 Opts.ShowFixits = !Args.hasArg(OPT_fno_diagnostics_fixit_info); 516 Opts.ShowLocation = !Args.hasArg(OPT_fno_show_source_location); 517 Opts.ShowOptionNames = Args.hasArg(OPT_fdiagnostics_show_option); 518 519 // Default behavior is to not to show note include stacks. 520 Opts.ShowNoteIncludeStack = false; 521 if (Arg *A = Args.getLastArg(OPT_fdiagnostics_show_note_include_stack, 522 OPT_fno_diagnostics_show_note_include_stack)) 523 if (A->getOption().matches(OPT_fdiagnostics_show_note_include_stack)) 524 Opts.ShowNoteIncludeStack = true; 525 526 StringRef ShowOverloads = 527 Args.getLastArgValue(OPT_fshow_overloads_EQ, "all"); 528 if (ShowOverloads == "best") 529 Opts.setShowOverloads(Ovl_Best); 530 else if (ShowOverloads == "all") 531 Opts.setShowOverloads(Ovl_All); 532 else { 533 Success = false; 534 if (Diags) 535 Diags->Report(diag::err_drv_invalid_value) 536 << Args.getLastArg(OPT_fshow_overloads_EQ)->getAsString(Args) 537 << ShowOverloads; 538 } 539 540 StringRef ShowCategory = 541 Args.getLastArgValue(OPT_fdiagnostics_show_category, "none"); 542 if (ShowCategory == "none") 543 Opts.ShowCategories = 0; 544 else if (ShowCategory == "id") 545 Opts.ShowCategories = 1; 546 else if (ShowCategory == "name") 547 Opts.ShowCategories = 2; 548 else { 549 Success = false; 550 if (Diags) 551 Diags->Report(diag::err_drv_invalid_value) 552 << Args.getLastArg(OPT_fdiagnostics_show_category)->getAsString(Args) 553 << ShowCategory; 554 } 555 556 StringRef Format = 557 Args.getLastArgValue(OPT_fdiagnostics_format, "clang"); 558 if (Format == "clang") 559 Opts.setFormat(DiagnosticOptions::Clang); 560 else if (Format == "msvc") 561 Opts.setFormat(DiagnosticOptions::Msvc); 562 else if (Format == "vi") 563 Opts.setFormat(DiagnosticOptions::Vi); 564 else { 565 Success = false; 566 if (Diags) 567 Diags->Report(diag::err_drv_invalid_value) 568 << Args.getLastArg(OPT_fdiagnostics_format)->getAsString(Args) 569 << Format; 570 } 571 572 Opts.ShowSourceRanges = Args.hasArg(OPT_fdiagnostics_print_source_range_info); 573 Opts.ShowParseableFixits = Args.hasArg(OPT_fdiagnostics_parseable_fixits); 574 Opts.ShowPresumedLoc = !Args.hasArg(OPT_fno_diagnostics_use_presumed_location); 575 Opts.VerifyDiagnostics = Args.hasArg(OPT_verify); 576 Opts.ElideType = !Args.hasArg(OPT_fno_elide_type); 577 Opts.ShowTemplateTree = Args.hasArg(OPT_fdiagnostics_show_template_tree); 578 Opts.WarnOnSpellCheck = Args.hasArg(OPT_fwarn_on_spellcheck); 579 Opts.ErrorLimit = Args.getLastArgIntValue(OPT_ferror_limit, 0, Diags); 580 Opts.MacroBacktraceLimit 581 = Args.getLastArgIntValue(OPT_fmacro_backtrace_limit, 582 DiagnosticOptions::DefaultMacroBacktraceLimit, Diags); 583 Opts.TemplateBacktraceLimit 584 = Args.getLastArgIntValue(OPT_ftemplate_backtrace_limit, 585 DiagnosticOptions::DefaultTemplateBacktraceLimit, 586 Diags); 587 Opts.ConstexprBacktraceLimit 588 = Args.getLastArgIntValue(OPT_fconstexpr_backtrace_limit, 589 DiagnosticOptions::DefaultConstexprBacktraceLimit, 590 Diags); 591 Opts.TabStop = Args.getLastArgIntValue(OPT_ftabstop, 592 DiagnosticOptions::DefaultTabStop, Diags); 593 if (Opts.TabStop == 0 || Opts.TabStop > DiagnosticOptions::MaxTabStop) { 594 Opts.TabStop = DiagnosticOptions::DefaultTabStop; 595 if (Diags) 596 Diags->Report(diag::warn_ignoring_ftabstop_value) 597 << Opts.TabStop << DiagnosticOptions::DefaultTabStop; 598 } 599 Opts.MessageLength = Args.getLastArgIntValue(OPT_fmessage_length, 0, Diags); 600 addWarningArgs(Args, Opts.Warnings); 601 602 return Success; 603 } 604 605 static void ParseFileSystemArgs(FileSystemOptions &Opts, ArgList &Args) { 606 Opts.WorkingDir = Args.getLastArgValue(OPT_working_directory); 607 } 608 609 static InputKind ParseFrontendArgs(FrontendOptions &Opts, ArgList &Args, 610 DiagnosticsEngine &Diags) { 611 using namespace options; 612 Opts.ProgramAction = frontend::ParseSyntaxOnly; 613 if (const Arg *A = Args.getLastArg(OPT_Action_Group)) { 614 switch (A->getOption().getID()) { 615 default: 616 llvm_unreachable("Invalid option in group!"); 617 case OPT_ast_list: 618 Opts.ProgramAction = frontend::ASTDeclList; break; 619 case OPT_ast_dump: 620 Opts.ProgramAction = frontend::ASTDump; break; 621 case OPT_ast_dump_xml: 622 Opts.ProgramAction = frontend::ASTDumpXML; break; 623 case OPT_ast_print: 624 Opts.ProgramAction = frontend::ASTPrint; break; 625 case OPT_ast_view: 626 Opts.ProgramAction = frontend::ASTView; break; 627 case OPT_dump_raw_tokens: 628 Opts.ProgramAction = frontend::DumpRawTokens; break; 629 case OPT_dump_tokens: 630 Opts.ProgramAction = frontend::DumpTokens; break; 631 case OPT_S: 632 Opts.ProgramAction = frontend::EmitAssembly; break; 633 case OPT_emit_llvm_bc: 634 Opts.ProgramAction = frontend::EmitBC; break; 635 case OPT_emit_html: 636 Opts.ProgramAction = frontend::EmitHTML; break; 637 case OPT_emit_llvm: 638 Opts.ProgramAction = frontend::EmitLLVM; break; 639 case OPT_emit_llvm_only: 640 Opts.ProgramAction = frontend::EmitLLVMOnly; break; 641 case OPT_emit_codegen_only: 642 Opts.ProgramAction = frontend::EmitCodeGenOnly; break; 643 case OPT_emit_obj: 644 Opts.ProgramAction = frontend::EmitObj; break; 645 case OPT_fixit_EQ: 646 Opts.FixItSuffix = A->getValue(); 647 // fall-through! 648 case OPT_fixit: 649 Opts.ProgramAction = frontend::FixIt; break; 650 case OPT_emit_module: 651 Opts.ProgramAction = frontend::GenerateModule; break; 652 case OPT_emit_pch: 653 Opts.ProgramAction = frontend::GeneratePCH; break; 654 case OPT_emit_pth: 655 Opts.ProgramAction = frontend::GeneratePTH; break; 656 case OPT_init_only: 657 Opts.ProgramAction = frontend::InitOnly; break; 658 case OPT_fsyntax_only: 659 Opts.ProgramAction = frontend::ParseSyntaxOnly; break; 660 case OPT_module_file_info: 661 Opts.ProgramAction = frontend::ModuleFileInfo; break; 662 case OPT_print_decl_contexts: 663 Opts.ProgramAction = frontend::PrintDeclContext; break; 664 case OPT_print_preamble: 665 Opts.ProgramAction = frontend::PrintPreamble; break; 666 case OPT_E: 667 Opts.ProgramAction = frontend::PrintPreprocessedInput; break; 668 case OPT_rewrite_macros: 669 Opts.ProgramAction = frontend::RewriteMacros; break; 670 case OPT_rewrite_objc: 671 Opts.ProgramAction = frontend::RewriteObjC; break; 672 case OPT_rewrite_test: 673 Opts.ProgramAction = frontend::RewriteTest; break; 674 case OPT_analyze: 675 Opts.ProgramAction = frontend::RunAnalysis; break; 676 case OPT_migrate: 677 Opts.ProgramAction = frontend::MigrateSource; break; 678 case OPT_Eonly: 679 Opts.ProgramAction = frontend::RunPreprocessorOnly; break; 680 } 681 } 682 683 if (const Arg* A = Args.getLastArg(OPT_plugin)) { 684 Opts.Plugins.push_back(A->getValue(0)); 685 Opts.ProgramAction = frontend::PluginAction; 686 Opts.ActionName = A->getValue(); 687 688 for (arg_iterator it = Args.filtered_begin(OPT_plugin_arg), 689 end = Args.filtered_end(); it != end; ++it) { 690 if ((*it)->getValue(0) == Opts.ActionName) 691 Opts.PluginArgs.push_back((*it)->getValue(1)); 692 } 693 } 694 695 Opts.AddPluginActions = Args.getAllArgValues(OPT_add_plugin); 696 Opts.AddPluginArgs.resize(Opts.AddPluginActions.size()); 697 for (int i = 0, e = Opts.AddPluginActions.size(); i != e; ++i) { 698 for (arg_iterator it = Args.filtered_begin(OPT_plugin_arg), 699 end = Args.filtered_end(); it != end; ++it) { 700 if ((*it)->getValue(0) == Opts.AddPluginActions[i]) 701 Opts.AddPluginArgs[i].push_back((*it)->getValue(1)); 702 } 703 } 704 705 if (const Arg *A = Args.getLastArg(OPT_code_completion_at)) { 706 Opts.CodeCompletionAt = 707 ParsedSourceLocation::FromString(A->getValue()); 708 if (Opts.CodeCompletionAt.FileName.empty()) 709 Diags.Report(diag::err_drv_invalid_value) 710 << A->getAsString(Args) << A->getValue(); 711 } 712 Opts.DisableFree = Args.hasArg(OPT_disable_free); 713 714 Opts.OutputFile = Args.getLastArgValue(OPT_o); 715 Opts.Plugins = Args.getAllArgValues(OPT_load); 716 Opts.RelocatablePCH = Args.hasArg(OPT_relocatable_pch); 717 Opts.ShowHelp = Args.hasArg(OPT_help); 718 Opts.ShowStats = Args.hasArg(OPT_print_stats); 719 Opts.ShowTimers = Args.hasArg(OPT_ftime_report); 720 Opts.ShowVersion = Args.hasArg(OPT_version); 721 Opts.ASTMergeFiles = Args.getAllArgValues(OPT_ast_merge); 722 Opts.LLVMArgs = Args.getAllArgValues(OPT_mllvm); 723 Opts.FixWhatYouCan = Args.hasArg(OPT_fix_what_you_can); 724 Opts.FixOnlyWarnings = Args.hasArg(OPT_fix_only_warnings); 725 Opts.FixAndRecompile = Args.hasArg(OPT_fixit_recompile); 726 Opts.FixToTemporaries = Args.hasArg(OPT_fixit_to_temp); 727 Opts.ASTDumpFilter = Args.getLastArgValue(OPT_ast_dump_filter); 728 Opts.UseGlobalModuleIndex = !Args.hasArg(OPT_fno_modules_global_index); 729 Opts.GenerateGlobalModuleIndex = Opts.UseGlobalModuleIndex; 730 731 Opts.CodeCompleteOpts.IncludeMacros 732 = Args.hasArg(OPT_code_completion_macros); 733 Opts.CodeCompleteOpts.IncludeCodePatterns 734 = Args.hasArg(OPT_code_completion_patterns); 735 Opts.CodeCompleteOpts.IncludeGlobals 736 = !Args.hasArg(OPT_no_code_completion_globals); 737 Opts.CodeCompleteOpts.IncludeBriefComments 738 = Args.hasArg(OPT_code_completion_brief_comments); 739 740 Opts.OverrideRecordLayoutsFile 741 = Args.getLastArgValue(OPT_foverride_record_layout_EQ); 742 if (const Arg *A = Args.getLastArg(OPT_arcmt_check, 743 OPT_arcmt_modify, 744 OPT_arcmt_migrate)) { 745 switch (A->getOption().getID()) { 746 default: 747 llvm_unreachable("missed a case"); 748 case OPT_arcmt_check: 749 Opts.ARCMTAction = FrontendOptions::ARCMT_Check; 750 break; 751 case OPT_arcmt_modify: 752 Opts.ARCMTAction = FrontendOptions::ARCMT_Modify; 753 break; 754 case OPT_arcmt_migrate: 755 Opts.ARCMTAction = FrontendOptions::ARCMT_Migrate; 756 break; 757 } 758 } 759 Opts.MTMigrateDir = Args.getLastArgValue(OPT_mt_migrate_directory); 760 Opts.ARCMTMigrateReportOut 761 = Args.getLastArgValue(OPT_arcmt_migrate_report_output); 762 Opts.ARCMTMigrateEmitARCErrors 763 = Args.hasArg(OPT_arcmt_migrate_emit_arc_errors); 764 765 if (Args.hasArg(OPT_objcmt_migrate_literals)) 766 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_Literals; 767 if (Args.hasArg(OPT_objcmt_migrate_subscripting)) 768 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_Subscripting; 769 770 if (Opts.ARCMTAction != FrontendOptions::ARCMT_None && 771 Opts.ObjCMTAction != FrontendOptions::ObjCMT_None) { 772 Diags.Report(diag::err_drv_argument_not_allowed_with) 773 << "ARC migration" << "ObjC migration"; 774 } 775 776 InputKind DashX = IK_None; 777 if (const Arg *A = Args.getLastArg(OPT_x)) { 778 DashX = llvm::StringSwitch<InputKind>(A->getValue()) 779 .Case("c", IK_C) 780 .Case("cl", IK_OpenCL) 781 .Case("cuda", IK_CUDA) 782 .Case("c++", IK_CXX) 783 .Case("objective-c", IK_ObjC) 784 .Case("objective-c++", IK_ObjCXX) 785 .Case("cpp-output", IK_PreprocessedC) 786 .Case("assembler-with-cpp", IK_Asm) 787 .Case("c++-cpp-output", IK_PreprocessedCXX) 788 .Case("objective-c-cpp-output", IK_PreprocessedObjC) 789 .Case("objc-cpp-output", IK_PreprocessedObjC) 790 .Case("objective-c++-cpp-output", IK_PreprocessedObjCXX) 791 .Case("objc++-cpp-output", IK_PreprocessedObjCXX) 792 .Case("c-header", IK_C) 793 .Case("cl-header", IK_OpenCL) 794 .Case("objective-c-header", IK_ObjC) 795 .Case("c++-header", IK_CXX) 796 .Case("objective-c++-header", IK_ObjCXX) 797 .Cases("ast", "pcm", IK_AST) 798 .Case("ir", IK_LLVM_IR) 799 .Default(IK_None); 800 if (DashX == IK_None) 801 Diags.Report(diag::err_drv_invalid_value) 802 << A->getAsString(Args) << A->getValue(); 803 } 804 805 // '-' is the default input if none is given. 806 std::vector<std::string> Inputs = Args.getAllArgValues(OPT_INPUT); 807 Opts.Inputs.clear(); 808 if (Inputs.empty()) 809 Inputs.push_back("-"); 810 for (unsigned i = 0, e = Inputs.size(); i != e; ++i) { 811 InputKind IK = DashX; 812 if (IK == IK_None) { 813 IK = FrontendOptions::getInputKindForExtension( 814 StringRef(Inputs[i]).rsplit('.').second); 815 // FIXME: Remove this hack. 816 if (i == 0) 817 DashX = IK; 818 } 819 Opts.Inputs.push_back(FrontendInputFile(Inputs[i], IK)); 820 } 821 822 return DashX; 823 } 824 825 std::string CompilerInvocation::GetResourcesPath(const char *Argv0, 826 void *MainAddr) { 827 llvm::sys::Path P = llvm::sys::Path::GetMainExecutable(Argv0, MainAddr); 828 829 if (!P.isEmpty()) { 830 P.eraseComponent(); // Remove /clang from foo/bin/clang 831 P.eraseComponent(); // Remove /bin from foo/bin 832 833 // Get foo/lib/clang/<version>/include 834 P.appendComponent("lib"); 835 P.appendComponent("clang"); 836 P.appendComponent(CLANG_VERSION_STRING); 837 } 838 839 return P.str(); 840 } 841 842 static void ParseHeaderSearchArgs(HeaderSearchOptions &Opts, ArgList &Args) { 843 using namespace options; 844 Opts.Sysroot = Args.getLastArgValue(OPT_isysroot, "/"); 845 Opts.Verbose = Args.hasArg(OPT_v); 846 Opts.UseBuiltinIncludes = !Args.hasArg(OPT_nobuiltininc); 847 Opts.UseStandardSystemIncludes = !Args.hasArg(OPT_nostdsysteminc); 848 Opts.UseStandardCXXIncludes = !Args.hasArg(OPT_nostdincxx); 849 if (const Arg *A = Args.getLastArg(OPT_stdlib_EQ)) 850 Opts.UseLibcxx = (strcmp(A->getValue(), "libc++") == 0); 851 Opts.ResourceDir = Args.getLastArgValue(OPT_resource_dir); 852 Opts.ModuleCachePath = Args.getLastArgValue(OPT_fmodules_cache_path); 853 Opts.DisableModuleHash = Args.hasArg(OPT_fdisable_module_hash); 854 Opts.ModuleCachePruneInterval 855 = Args.getLastArgIntValue(OPT_fmodules_prune_interval, 7*24*60*60); 856 Opts.ModuleCachePruneAfter 857 = Args.getLastArgIntValue(OPT_fmodules_prune_after, 31*24*60*60); 858 for (arg_iterator it = Args.filtered_begin(OPT_fmodules_ignore_macro), 859 ie = Args.filtered_end(); it != ie; ++it) { 860 StringRef MacroDef = (*it)->getValue(); 861 Opts.ModulesIgnoreMacros.insert(MacroDef.split('=').first); 862 } 863 864 // Add -I..., -F..., and -index-header-map options in order. 865 bool IsIndexHeaderMap = false; 866 for (arg_iterator it = Args.filtered_begin(OPT_I, OPT_F, 867 OPT_index_header_map), 868 ie = Args.filtered_end(); it != ie; ++it) { 869 if ((*it)->getOption().matches(OPT_index_header_map)) { 870 // -index-header-map applies to the next -I or -F. 871 IsIndexHeaderMap = true; 872 continue; 873 } 874 875 frontend::IncludeDirGroup Group 876 = IsIndexHeaderMap? frontend::IndexHeaderMap : frontend::Angled; 877 878 Opts.AddPath((*it)->getValue(), Group, 879 /*IsFramework=*/ (*it)->getOption().matches(OPT_F), true); 880 IsIndexHeaderMap = false; 881 } 882 883 // Add -iprefix/-iwithprefix/-iwithprefixbefore options. 884 StringRef Prefix = ""; // FIXME: This isn't the correct default prefix. 885 for (arg_iterator it = Args.filtered_begin(OPT_iprefix, OPT_iwithprefix, 886 OPT_iwithprefixbefore), 887 ie = Args.filtered_end(); it != ie; ++it) { 888 const Arg *A = *it; 889 if (A->getOption().matches(OPT_iprefix)) 890 Prefix = A->getValue(); 891 else if (A->getOption().matches(OPT_iwithprefix)) 892 Opts.AddPath(Prefix.str() + A->getValue(), 893 frontend::After, false, true); 894 else 895 Opts.AddPath(Prefix.str() + A->getValue(), 896 frontend::Angled, false, true); 897 } 898 899 for (arg_iterator it = Args.filtered_begin(OPT_idirafter), 900 ie = Args.filtered_end(); it != ie; ++it) 901 Opts.AddPath((*it)->getValue(), frontend::After, false, true); 902 for (arg_iterator it = Args.filtered_begin(OPT_iquote), 903 ie = Args.filtered_end(); it != ie; ++it) 904 Opts.AddPath((*it)->getValue(), frontend::Quoted, false, true); 905 for (arg_iterator it = Args.filtered_begin(OPT_isystem, 906 OPT_iwithsysroot), ie = Args.filtered_end(); it != ie; ++it) 907 Opts.AddPath((*it)->getValue(), frontend::System, false, 908 !(*it)->getOption().matches(OPT_iwithsysroot)); 909 for (arg_iterator it = Args.filtered_begin(OPT_iframework), 910 ie = Args.filtered_end(); it != ie; ++it) 911 Opts.AddPath((*it)->getValue(), frontend::System, true, true); 912 913 // Add the paths for the various language specific isystem flags. 914 for (arg_iterator it = Args.filtered_begin(OPT_c_isystem), 915 ie = Args.filtered_end(); it != ie; ++it) 916 Opts.AddPath((*it)->getValue(), frontend::CSystem, false, true); 917 for (arg_iterator it = Args.filtered_begin(OPT_cxx_isystem), 918 ie = Args.filtered_end(); it != ie; ++it) 919 Opts.AddPath((*it)->getValue(), frontend::CXXSystem, false, true); 920 for (arg_iterator it = Args.filtered_begin(OPT_objc_isystem), 921 ie = Args.filtered_end(); it != ie; ++it) 922 Opts.AddPath((*it)->getValue(), frontend::ObjCSystem, false,true); 923 for (arg_iterator it = Args.filtered_begin(OPT_objcxx_isystem), 924 ie = Args.filtered_end(); it != ie; ++it) 925 Opts.AddPath((*it)->getValue(), frontend::ObjCXXSystem, false, true); 926 927 // Add the internal paths from a driver that detects standard include paths. 928 for (arg_iterator I = Args.filtered_begin(OPT_internal_isystem, 929 OPT_internal_externc_isystem), 930 E = Args.filtered_end(); 931 I != E; ++I) { 932 frontend::IncludeDirGroup Group = frontend::System; 933 if ((*I)->getOption().matches(OPT_internal_externc_isystem)) 934 Group = frontend::ExternCSystem; 935 Opts.AddPath((*I)->getValue(), Group, false, true); 936 } 937 938 // Add the path prefixes which are implicitly treated as being system headers. 939 for (arg_iterator I = Args.filtered_begin(OPT_isystem_prefix, 940 OPT_ino_system_prefix), 941 E = Args.filtered_end(); 942 I != E; ++I) 943 Opts.AddSystemHeaderPrefix((*I)->getValue(), 944 (*I)->getOption().matches(OPT_isystem_prefix)); 945 } 946 947 void CompilerInvocation::setLangDefaults(LangOptions &Opts, InputKind IK, 948 LangStandard::Kind LangStd) { 949 // Set some properties which depend solely on the input kind; it would be nice 950 // to move these to the language standard, and have the driver resolve the 951 // input kind + language standard. 952 if (IK == IK_Asm) { 953 Opts.AsmPreprocessor = 1; 954 } else if (IK == IK_ObjC || 955 IK == IK_ObjCXX || 956 IK == IK_PreprocessedObjC || 957 IK == IK_PreprocessedObjCXX) { 958 Opts.ObjC1 = Opts.ObjC2 = 1; 959 } 960 961 if (LangStd == LangStandard::lang_unspecified) { 962 // Based on the base language, pick one. 963 switch (IK) { 964 case IK_None: 965 case IK_AST: 966 case IK_LLVM_IR: 967 llvm_unreachable("Invalid input kind!"); 968 case IK_OpenCL: 969 LangStd = LangStandard::lang_opencl; 970 break; 971 case IK_CUDA: 972 LangStd = LangStandard::lang_cuda; 973 break; 974 case IK_Asm: 975 case IK_C: 976 case IK_PreprocessedC: 977 case IK_ObjC: 978 case IK_PreprocessedObjC: 979 LangStd = LangStandard::lang_gnu99; 980 break; 981 case IK_CXX: 982 case IK_PreprocessedCXX: 983 case IK_ObjCXX: 984 case IK_PreprocessedObjCXX: 985 LangStd = LangStandard::lang_gnucxx98; 986 break; 987 } 988 } 989 990 const LangStandard &Std = LangStandard::getLangStandardForKind(LangStd); 991 Opts.LineComment = Std.hasLineComments(); 992 Opts.C99 = Std.isC99(); 993 Opts.C11 = Std.isC11(); 994 Opts.CPlusPlus = Std.isCPlusPlus(); 995 Opts.CPlusPlus11 = Std.isCPlusPlus11(); 996 Opts.CPlusPlus1y = Std.isCPlusPlus1y(); 997 Opts.Digraphs = Std.hasDigraphs(); 998 Opts.GNUMode = Std.isGNUMode(); 999 Opts.GNUInline = !Std.isC99(); 1000 Opts.HexFloats = Std.hasHexFloats(); 1001 Opts.ImplicitInt = Std.hasImplicitInt(); 1002 1003 // Set OpenCL Version. 1004 if (LangStd == LangStandard::lang_opencl) { 1005 Opts.OpenCL = 1; 1006 Opts.OpenCLVersion = 100; 1007 } 1008 else if (LangStd == LangStandard::lang_opencl11) { 1009 Opts.OpenCL = 1; 1010 Opts.OpenCLVersion = 110; 1011 } 1012 else if (LangStd == LangStandard::lang_opencl12) { 1013 Opts.OpenCL = 1; 1014 Opts.OpenCLVersion = 120; 1015 } 1016 1017 // OpenCL has some additional defaults. 1018 if (Opts.OpenCL) { 1019 Opts.AltiVec = 0; 1020 Opts.CXXOperatorNames = 1; 1021 Opts.LaxVectorConversions = 0; 1022 Opts.DefaultFPContract = 1; 1023 Opts.NativeHalfType = 1; 1024 } 1025 1026 if (LangStd == LangStandard::lang_cuda) 1027 Opts.CUDA = 1; 1028 1029 // OpenCL and C++ both have bool, true, false keywords. 1030 Opts.Bool = Opts.OpenCL || Opts.CPlusPlus; 1031 1032 // C++ has wchar_t keyword. 1033 Opts.WChar = Opts.CPlusPlus; 1034 1035 Opts.GNUKeywords = Opts.GNUMode; 1036 Opts.CXXOperatorNames = Opts.CPlusPlus; 1037 1038 // Mimicing gcc's behavior, trigraphs are only enabled if -trigraphs 1039 // is specified, or -std is set to a conforming mode. 1040 Opts.Trigraphs = !Opts.GNUMode; 1041 1042 Opts.DollarIdents = !Opts.AsmPreprocessor; 1043 } 1044 1045 /// Attempt to parse a visibility value out of the given argument. 1046 static Visibility parseVisibility(Arg *arg, ArgList &args, 1047 DiagnosticsEngine &diags) { 1048 StringRef value = arg->getValue(); 1049 if (value == "default") { 1050 return DefaultVisibility; 1051 } else if (value == "hidden") { 1052 return HiddenVisibility; 1053 } else if (value == "protected") { 1054 // FIXME: diagnose if target does not support protected visibility 1055 return ProtectedVisibility; 1056 } 1057 1058 diags.Report(diag::err_drv_invalid_value) 1059 << arg->getAsString(args) << value; 1060 return DefaultVisibility; 1061 } 1062 1063 static void ParseLangArgs(LangOptions &Opts, ArgList &Args, InputKind IK, 1064 DiagnosticsEngine &Diags) { 1065 // FIXME: Cleanup per-file based stuff. 1066 LangStandard::Kind LangStd = LangStandard::lang_unspecified; 1067 if (const Arg *A = Args.getLastArg(OPT_std_EQ)) { 1068 LangStd = llvm::StringSwitch<LangStandard::Kind>(A->getValue()) 1069 #define LANGSTANDARD(id, name, desc, features) \ 1070 .Case(name, LangStandard::lang_##id) 1071 #include "clang/Frontend/LangStandards.def" 1072 .Default(LangStandard::lang_unspecified); 1073 if (LangStd == LangStandard::lang_unspecified) 1074 Diags.Report(diag::err_drv_invalid_value) 1075 << A->getAsString(Args) << A->getValue(); 1076 else { 1077 // Valid standard, check to make sure language and standard are compatable. 1078 const LangStandard &Std = LangStandard::getLangStandardForKind(LangStd); 1079 switch (IK) { 1080 case IK_C: 1081 case IK_ObjC: 1082 case IK_PreprocessedC: 1083 case IK_PreprocessedObjC: 1084 if (!(Std.isC89() || Std.isC99())) 1085 Diags.Report(diag::err_drv_argument_not_allowed_with) 1086 << A->getAsString(Args) << "C/ObjC"; 1087 break; 1088 case IK_CXX: 1089 case IK_ObjCXX: 1090 case IK_PreprocessedCXX: 1091 case IK_PreprocessedObjCXX: 1092 if (!Std.isCPlusPlus()) 1093 Diags.Report(diag::err_drv_argument_not_allowed_with) 1094 << A->getAsString(Args) << "C++/ObjC++"; 1095 break; 1096 case IK_OpenCL: 1097 if (!Std.isC99()) 1098 Diags.Report(diag::err_drv_argument_not_allowed_with) 1099 << A->getAsString(Args) << "OpenCL"; 1100 break; 1101 case IK_CUDA: 1102 if (!Std.isCPlusPlus()) 1103 Diags.Report(diag::err_drv_argument_not_allowed_with) 1104 << A->getAsString(Args) << "CUDA"; 1105 break; 1106 default: 1107 break; 1108 } 1109 } 1110 } 1111 1112 // -cl-std only applies for OpenCL language standards. 1113 // Override the -std option in this case. 1114 if (const Arg *A = Args.getLastArg(OPT_cl_std_EQ)) { 1115 LangStandard::Kind OpenCLLangStd 1116 = llvm::StringSwitch<LangStandard::Kind>(A->getValue()) 1117 .Case("CL", LangStandard::lang_opencl) 1118 .Case("CL1.1", LangStandard::lang_opencl11) 1119 .Case("CL1.2", LangStandard::lang_opencl12) 1120 .Default(LangStandard::lang_unspecified); 1121 1122 if (OpenCLLangStd == LangStandard::lang_unspecified) { 1123 Diags.Report(diag::err_drv_invalid_value) 1124 << A->getAsString(Args) << A->getValue(); 1125 } 1126 else 1127 LangStd = OpenCLLangStd; 1128 } 1129 1130 CompilerInvocation::setLangDefaults(Opts, IK, LangStd); 1131 1132 // We abuse '-f[no-]gnu-keywords' to force overriding all GNU-extension 1133 // keywords. This behavior is provided by GCC's poorly named '-fasm' flag, 1134 // while a subset (the non-C++ GNU keywords) is provided by GCC's 1135 // '-fgnu-keywords'. Clang conflates the two for simplicity under the single 1136 // name, as it doesn't seem a useful distinction. 1137 Opts.GNUKeywords = Args.hasFlag(OPT_fgnu_keywords, OPT_fno_gnu_keywords, 1138 Opts.GNUKeywords); 1139 1140 if (Args.hasArg(OPT_fno_operator_names)) 1141 Opts.CXXOperatorNames = 0; 1142 1143 if (Opts.ObjC1) { 1144 if (Arg *arg = Args.getLastArg(OPT_fobjc_runtime_EQ)) { 1145 StringRef value = arg->getValue(); 1146 if (Opts.ObjCRuntime.tryParse(value)) 1147 Diags.Report(diag::err_drv_unknown_objc_runtime) << value; 1148 } 1149 1150 if (Args.hasArg(OPT_fobjc_gc_only)) 1151 Opts.setGC(LangOptions::GCOnly); 1152 else if (Args.hasArg(OPT_fobjc_gc)) 1153 Opts.setGC(LangOptions::HybridGC); 1154 else if (Args.hasArg(OPT_fobjc_arc)) { 1155 Opts.ObjCAutoRefCount = 1; 1156 if (!Opts.ObjCRuntime.allowsARC()) 1157 Diags.Report(diag::err_arc_unsupported_on_runtime); 1158 1159 // Only set ObjCARCWeak if ARC is enabled. 1160 if (Args.hasArg(OPT_fobjc_runtime_has_weak)) 1161 Opts.ObjCARCWeak = 1; 1162 else 1163 Opts.ObjCARCWeak = Opts.ObjCRuntime.allowsWeak(); 1164 } 1165 1166 if (Args.hasArg(OPT_fno_objc_infer_related_result_type)) 1167 Opts.ObjCInferRelatedResultType = 0; 1168 } 1169 1170 if (Args.hasArg(OPT_fgnu89_inline)) 1171 Opts.GNUInline = 1; 1172 1173 if (Args.hasArg(OPT_fapple_kext)) { 1174 if (!Opts.CPlusPlus) 1175 Diags.Report(diag::warn_c_kext); 1176 else 1177 Opts.AppleKext = 1; 1178 } 1179 1180 if (Args.hasArg(OPT_print_ivar_layout)) 1181 Opts.ObjCGCBitmapPrint = 1; 1182 if (Args.hasArg(OPT_fno_constant_cfstrings)) 1183 Opts.NoConstantCFStrings = 1; 1184 1185 if (Args.hasArg(OPT_faltivec)) 1186 Opts.AltiVec = 1; 1187 1188 if (Args.hasArg(OPT_pthread)) 1189 Opts.POSIXThreads = 1; 1190 1191 // The value-visibility mode defaults to "default". 1192 if (Arg *visOpt = Args.getLastArg(OPT_fvisibility)) { 1193 Opts.setValueVisibilityMode(parseVisibility(visOpt, Args, Diags)); 1194 } else { 1195 Opts.setValueVisibilityMode(DefaultVisibility); 1196 } 1197 1198 // The type-visibility mode defaults to the value-visibility mode. 1199 if (Arg *typeVisOpt = Args.getLastArg(OPT_ftype_visibility)) { 1200 Opts.setTypeVisibilityMode(parseVisibility(typeVisOpt, Args, Diags)); 1201 } else { 1202 Opts.setTypeVisibilityMode(Opts.getValueVisibilityMode()); 1203 } 1204 1205 if (Args.hasArg(OPT_fvisibility_inlines_hidden)) 1206 Opts.InlineVisibilityHidden = 1; 1207 1208 if (Args.hasArg(OPT_ftrapv)) { 1209 Opts.setSignedOverflowBehavior(LangOptions::SOB_Trapping); 1210 // Set the handler, if one is specified. 1211 Opts.OverflowHandler = 1212 Args.getLastArgValue(OPT_ftrapv_handler); 1213 } 1214 else if (Args.hasArg(OPT_fwrapv)) 1215 Opts.setSignedOverflowBehavior(LangOptions::SOB_Defined); 1216 1217 if (Args.hasArg(OPT_trigraphs)) 1218 Opts.Trigraphs = 1; 1219 1220 Opts.DollarIdents = Args.hasFlag(OPT_fdollars_in_identifiers, 1221 OPT_fno_dollars_in_identifiers, 1222 Opts.DollarIdents); 1223 Opts.PascalStrings = Args.hasArg(OPT_fpascal_strings); 1224 Opts.MicrosoftExt 1225 = Args.hasArg(OPT_fms_extensions) || Args.hasArg(OPT_fms_compatibility); 1226 Opts.MicrosoftMode = Args.hasArg(OPT_fms_compatibility); 1227 Opts.AsmBlocks = Args.hasArg(OPT_fasm_blocks) || Opts.MicrosoftExt; 1228 Opts.MSCVersion = Args.getLastArgIntValue(OPT_fmsc_version, 0, Diags); 1229 Opts.Borland = Args.hasArg(OPT_fborland_extensions); 1230 Opts.WritableStrings = Args.hasArg(OPT_fwritable_strings); 1231 Opts.ConstStrings = Args.hasFlag(OPT_fconst_strings, OPT_fno_const_strings, 1232 Opts.ConstStrings); 1233 if (Args.hasArg(OPT_fno_lax_vector_conversions)) 1234 Opts.LaxVectorConversions = 0; 1235 if (Args.hasArg(OPT_fno_threadsafe_statics)) 1236 Opts.ThreadsafeStatics = 0; 1237 Opts.Exceptions = Args.hasArg(OPT_fexceptions); 1238 Opts.ObjCExceptions = Args.hasArg(OPT_fobjc_exceptions); 1239 Opts.CXXExceptions = Args.hasArg(OPT_fcxx_exceptions); 1240 Opts.SjLjExceptions = Args.hasArg(OPT_fsjlj_exceptions); 1241 Opts.TraditionalCPP = Args.hasArg(OPT_traditional_cpp); 1242 1243 Opts.RTTI = !Args.hasArg(OPT_fno_rtti); 1244 Opts.Blocks = Args.hasArg(OPT_fblocks); 1245 Opts.BlocksRuntimeOptional = Args.hasArg(OPT_fblocks_runtime_optional); 1246 Opts.Modules = Args.hasArg(OPT_fmodules); 1247 Opts.CharIsSigned = !Args.hasArg(OPT_fno_signed_char); 1248 Opts.WChar = Opts.CPlusPlus && !Args.hasArg(OPT_fno_wchar); 1249 Opts.ShortWChar = Args.hasArg(OPT_fshort_wchar); 1250 Opts.ShortEnums = Args.hasArg(OPT_fshort_enums); 1251 Opts.Freestanding = Args.hasArg(OPT_ffreestanding); 1252 Opts.NoBuiltin = Args.hasArg(OPT_fno_builtin) || Opts.Freestanding; 1253 Opts.AssumeSaneOperatorNew = !Args.hasArg(OPT_fno_assume_sane_operator_new); 1254 Opts.HeinousExtensions = Args.hasArg(OPT_fheinous_gnu_extensions); 1255 Opts.AccessControl = !Args.hasArg(OPT_fno_access_control); 1256 Opts.ElideConstructors = !Args.hasArg(OPT_fno_elide_constructors); 1257 Opts.MathErrno = Args.hasArg(OPT_fmath_errno); 1258 Opts.InstantiationDepth = Args.getLastArgIntValue(OPT_ftemplate_depth, 256, 1259 Diags); 1260 Opts.ConstexprCallDepth = Args.getLastArgIntValue(OPT_fconstexpr_depth, 512, 1261 Diags); 1262 Opts.BracketDepth = Args.getLastArgIntValue(OPT_fbracket_depth, 256, Diags); 1263 Opts.DelayedTemplateParsing = Args.hasArg(OPT_fdelayed_template_parsing); 1264 Opts.NumLargeByValueCopy = Args.getLastArgIntValue(OPT_Wlarge_by_value_copy_EQ, 1265 0, Diags); 1266 Opts.MSBitfields = Args.hasArg(OPT_mms_bitfields); 1267 Opts.ObjCConstantStringClass = 1268 Args.getLastArgValue(OPT_fconstant_string_class); 1269 Opts.ObjCDefaultSynthProperties = 1270 Args.hasArg(OPT_fobjc_default_synthesize_properties); 1271 Opts.EncodeExtendedBlockSig = 1272 Args.hasArg(OPT_fencode_extended_block_signature); 1273 Opts.EmitAllDecls = Args.hasArg(OPT_femit_all_decls); 1274 Opts.PackStruct = Args.getLastArgIntValue(OPT_fpack_struct_EQ, 0, Diags); 1275 Opts.PICLevel = Args.getLastArgIntValue(OPT_pic_level, 0, Diags); 1276 Opts.PIELevel = Args.getLastArgIntValue(OPT_pie_level, 0, Diags); 1277 Opts.Static = Args.hasArg(OPT_static_define); 1278 Opts.DumpRecordLayoutsSimple = Args.hasArg(OPT_fdump_record_layouts_simple); 1279 Opts.DumpRecordLayouts = Opts.DumpRecordLayoutsSimple 1280 || Args.hasArg(OPT_fdump_record_layouts); 1281 Opts.DumpVTableLayouts = Args.hasArg(OPT_fdump_vtable_layouts); 1282 Opts.SpellChecking = !Args.hasArg(OPT_fno_spell_checking); 1283 Opts.NoBitFieldTypeAlign = Args.hasArg(OPT_fno_bitfield_type_align); 1284 Opts.SinglePrecisionConstants = Args.hasArg(OPT_cl_single_precision_constant); 1285 Opts.FastRelaxedMath = Args.hasArg(OPT_cl_fast_relaxed_math); 1286 Opts.MRTD = Args.hasArg(OPT_mrtd); 1287 Opts.HexagonQdsp6Compat = Args.hasArg(OPT_mqdsp6_compat); 1288 Opts.FakeAddressSpaceMap = Args.hasArg(OPT_ffake_address_space_map); 1289 Opts.ParseUnknownAnytype = Args.hasArg(OPT_funknown_anytype); 1290 Opts.DebuggerSupport = Args.hasArg(OPT_fdebugger_support); 1291 Opts.DebuggerCastResultToId = Args.hasArg(OPT_fdebugger_cast_result_to_id); 1292 Opts.DebuggerObjCLiteral = Args.hasArg(OPT_fdebugger_objc_literal); 1293 Opts.ApplePragmaPack = Args.hasArg(OPT_fapple_pragma_pack); 1294 Opts.CurrentModule = Args.getLastArgValue(OPT_fmodule_name); 1295 1296 // Check if -fopenmp is specified. 1297 Opts.OpenMP = Args.hasArg(OPT_fopenmp); 1298 1299 // Record whether the __DEPRECATED define was requested. 1300 Opts.Deprecated = Args.hasFlag(OPT_fdeprecated_macro, 1301 OPT_fno_deprecated_macro, 1302 Opts.Deprecated); 1303 1304 // FIXME: Eliminate this dependency. 1305 unsigned Opt = getOptimizationLevel(Args, IK, Diags), 1306 OptSize = getOptimizationLevelSize(Args); 1307 Opts.Optimize = Opt != 0; 1308 Opts.OptimizeSize = OptSize != 0; 1309 1310 // This is the __NO_INLINE__ define, which just depends on things like the 1311 // optimization level and -fno-inline, not actually whether the backend has 1312 // inlining enabled. 1313 Opts.NoInlineDefine = !Opt || Args.hasArg(OPT_fno_inline); 1314 1315 Opts.FastMath = Args.hasArg(OPT_ffast_math) || 1316 isOptimizationLevelFast(Args); 1317 Opts.FiniteMathOnly = Args.hasArg(OPT_ffinite_math_only); 1318 1319 Opts.RetainCommentsFromSystemHeaders = 1320 Args.hasArg(OPT_fretain_comments_from_system_headers); 1321 1322 unsigned SSP = Args.getLastArgIntValue(OPT_stack_protector, 0, Diags); 1323 switch (SSP) { 1324 default: 1325 Diags.Report(diag::err_drv_invalid_value) 1326 << Args.getLastArg(OPT_stack_protector)->getAsString(Args) << SSP; 1327 break; 1328 case 0: Opts.setStackProtector(LangOptions::SSPOff); break; 1329 case 1: Opts.setStackProtector(LangOptions::SSPOn); break; 1330 case 2: Opts.setStackProtector(LangOptions::SSPReq); break; 1331 } 1332 1333 // Parse -fsanitize= arguments. 1334 std::vector<std::string> Sanitizers = Args.getAllArgValues(OPT_fsanitize_EQ); 1335 for (unsigned I = 0, N = Sanitizers.size(); I != N; ++I) { 1336 // Since the Opts.Sanitize* values are bitfields, it's a little tricky to 1337 // efficiently map string values to them. Perform the mapping indirectly: 1338 // convert strings to enumerated values, then switch over the enum to set 1339 // the right bitfield value. 1340 enum Sanitizer { 1341 #define SANITIZER(NAME, ID) \ 1342 ID, 1343 #include "clang/Basic/Sanitizers.def" 1344 Unknown 1345 }; 1346 switch (llvm::StringSwitch<unsigned>(Sanitizers[I]) 1347 #define SANITIZER(NAME, ID) \ 1348 .Case(NAME, ID) 1349 #include "clang/Basic/Sanitizers.def" 1350 .Default(Unknown)) { 1351 #define SANITIZER(NAME, ID) \ 1352 case ID: \ 1353 Opts.Sanitize.ID = true; \ 1354 break; 1355 #include "clang/Basic/Sanitizers.def" 1356 1357 case Unknown: 1358 Diags.Report(diag::err_drv_invalid_value) 1359 << "-fsanitize=" << Sanitizers[I]; 1360 break; 1361 } 1362 } 1363 } 1364 1365 static void ParsePreprocessorArgs(PreprocessorOptions &Opts, ArgList &Args, 1366 FileManager &FileMgr, 1367 DiagnosticsEngine &Diags) { 1368 using namespace options; 1369 Opts.ImplicitPCHInclude = Args.getLastArgValue(OPT_include_pch); 1370 Opts.ImplicitPTHInclude = Args.getLastArgValue(OPT_include_pth); 1371 if (const Arg *A = Args.getLastArg(OPT_token_cache)) 1372 Opts.TokenCache = A->getValue(); 1373 else 1374 Opts.TokenCache = Opts.ImplicitPTHInclude; 1375 Opts.UsePredefines = !Args.hasArg(OPT_undef); 1376 Opts.DetailedRecord = Args.hasArg(OPT_detailed_preprocessing_record); 1377 Opts.DisablePCHValidation = Args.hasArg(OPT_fno_validate_pch); 1378 1379 Opts.DumpDeserializedPCHDecls = Args.hasArg(OPT_dump_deserialized_pch_decls); 1380 for (arg_iterator it = Args.filtered_begin(OPT_error_on_deserialized_pch_decl), 1381 ie = Args.filtered_end(); it != ie; ++it) { 1382 const Arg *A = *it; 1383 Opts.DeserializedPCHDeclsToErrorOn.insert(A->getValue()); 1384 } 1385 1386 if (const Arg *A = Args.getLastArg(OPT_preamble_bytes_EQ)) { 1387 StringRef Value(A->getValue()); 1388 size_t Comma = Value.find(','); 1389 unsigned Bytes = 0; 1390 unsigned EndOfLine = 0; 1391 1392 if (Comma == StringRef::npos || 1393 Value.substr(0, Comma).getAsInteger(10, Bytes) || 1394 Value.substr(Comma + 1).getAsInteger(10, EndOfLine)) 1395 Diags.Report(diag::err_drv_preamble_format); 1396 else { 1397 Opts.PrecompiledPreambleBytes.first = Bytes; 1398 Opts.PrecompiledPreambleBytes.second = (EndOfLine != 0); 1399 } 1400 } 1401 1402 // Add macros from the command line. 1403 for (arg_iterator it = Args.filtered_begin(OPT_D, OPT_U), 1404 ie = Args.filtered_end(); it != ie; ++it) { 1405 if ((*it)->getOption().matches(OPT_D)) 1406 Opts.addMacroDef((*it)->getValue()); 1407 else 1408 Opts.addMacroUndef((*it)->getValue()); 1409 } 1410 1411 Opts.MacroIncludes = Args.getAllArgValues(OPT_imacros); 1412 1413 // Add the ordered list of -includes. 1414 for (arg_iterator it = Args.filtered_begin(OPT_include), 1415 ie = Args.filtered_end(); it != ie; ++it) { 1416 const Arg *A = *it; 1417 Opts.Includes.push_back(A->getValue()); 1418 } 1419 1420 for (arg_iterator it = Args.filtered_begin(OPT_chain_include), 1421 ie = Args.filtered_end(); it != ie; ++it) { 1422 const Arg *A = *it; 1423 Opts.ChainedIncludes.push_back(A->getValue()); 1424 } 1425 1426 // Include 'altivec.h' if -faltivec option present 1427 if (Args.hasArg(OPT_faltivec)) 1428 Opts.Includes.push_back("altivec.h"); 1429 1430 for (arg_iterator it = Args.filtered_begin(OPT_remap_file), 1431 ie = Args.filtered_end(); it != ie; ++it) { 1432 const Arg *A = *it; 1433 std::pair<StringRef,StringRef> Split = 1434 StringRef(A->getValue()).split(';'); 1435 1436 if (Split.second.empty()) { 1437 Diags.Report(diag::err_drv_invalid_remap_file) << A->getAsString(Args); 1438 continue; 1439 } 1440 1441 Opts.addRemappedFile(Split.first, Split.second); 1442 } 1443 1444 if (Arg *A = Args.getLastArg(OPT_fobjc_arc_cxxlib_EQ)) { 1445 StringRef Name = A->getValue(); 1446 unsigned Library = llvm::StringSwitch<unsigned>(Name) 1447 .Case("libc++", ARCXX_libcxx) 1448 .Case("libstdc++", ARCXX_libstdcxx) 1449 .Case("none", ARCXX_nolib) 1450 .Default(~0U); 1451 if (Library == ~0U) 1452 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Name; 1453 else 1454 Opts.ObjCXXARCStandardLibrary = (ObjCXXARCStandardLibraryKind)Library; 1455 } 1456 } 1457 1458 static void ParsePreprocessorOutputArgs(PreprocessorOutputOptions &Opts, 1459 ArgList &Args, 1460 frontend::ActionKind Action) { 1461 using namespace options; 1462 1463 switch (Action) { 1464 case frontend::ASTDeclList: 1465 case frontend::ASTDump: 1466 case frontend::ASTDumpXML: 1467 case frontend::ASTPrint: 1468 case frontend::ASTView: 1469 case frontend::EmitAssembly: 1470 case frontend::EmitBC: 1471 case frontend::EmitHTML: 1472 case frontend::EmitLLVM: 1473 case frontend::EmitLLVMOnly: 1474 case frontend::EmitCodeGenOnly: 1475 case frontend::EmitObj: 1476 case frontend::FixIt: 1477 case frontend::GenerateModule: 1478 case frontend::GeneratePCH: 1479 case frontend::GeneratePTH: 1480 case frontend::ParseSyntaxOnly: 1481 case frontend::ModuleFileInfo: 1482 case frontend::PluginAction: 1483 case frontend::PrintDeclContext: 1484 case frontend::RewriteObjC: 1485 case frontend::RewriteTest: 1486 case frontend::RunAnalysis: 1487 case frontend::MigrateSource: 1488 Opts.ShowCPP = 0; 1489 break; 1490 1491 case frontend::DumpRawTokens: 1492 case frontend::DumpTokens: 1493 case frontend::InitOnly: 1494 case frontend::PrintPreamble: 1495 case frontend::PrintPreprocessedInput: 1496 case frontend::RewriteMacros: 1497 case frontend::RunPreprocessorOnly: 1498 Opts.ShowCPP = !Args.hasArg(OPT_dM); 1499 break; 1500 } 1501 1502 Opts.ShowComments = Args.hasArg(OPT_C); 1503 Opts.ShowLineMarkers = !Args.hasArg(OPT_P); 1504 Opts.ShowMacroComments = Args.hasArg(OPT_CC); 1505 Opts.ShowMacros = Args.hasArg(OPT_dM) || Args.hasArg(OPT_dD); 1506 Opts.RewriteIncludes = Args.hasArg(OPT_frewrite_includes); 1507 } 1508 1509 static void ParseTargetArgs(TargetOptions &Opts, ArgList &Args) { 1510 using namespace options; 1511 Opts.ABI = Args.getLastArgValue(OPT_target_abi); 1512 Opts.CXXABI = Args.getLastArgValue(OPT_cxx_abi); 1513 Opts.CPU = Args.getLastArgValue(OPT_target_cpu); 1514 Opts.FeaturesAsWritten = Args.getAllArgValues(OPT_target_feature); 1515 Opts.LinkerVersion = Args.getLastArgValue(OPT_target_linker_version); 1516 Opts.Triple = llvm::Triple::normalize(Args.getLastArgValue(OPT_triple)); 1517 1518 // Use the default target triple if unspecified. 1519 if (Opts.Triple.empty()) 1520 Opts.Triple = llvm::sys::getDefaultTargetTriple(); 1521 } 1522 1523 // 1524 1525 bool CompilerInvocation::CreateFromArgs(CompilerInvocation &Res, 1526 const char *const *ArgBegin, 1527 const char *const *ArgEnd, 1528 DiagnosticsEngine &Diags) { 1529 bool Success = true; 1530 1531 // Parse the arguments. 1532 OwningPtr<OptTable> Opts(createDriverOptTable()); 1533 unsigned MissingArgIndex, MissingArgCount; 1534 OwningPtr<InputArgList> Args( 1535 Opts->ParseArgs(ArgBegin, ArgEnd,MissingArgIndex, MissingArgCount)); 1536 1537 // Check for missing argument error. 1538 if (MissingArgCount) { 1539 Diags.Report(diag::err_drv_missing_argument) 1540 << Args->getArgString(MissingArgIndex) << MissingArgCount; 1541 Success = false; 1542 } 1543 1544 // Issue errors on unknown arguments. 1545 for (arg_iterator it = Args->filtered_begin(OPT_UNKNOWN), 1546 ie = Args->filtered_end(); it != ie; ++it) { 1547 Diags.Report(diag::err_drv_unknown_argument) << (*it)->getAsString(*Args); 1548 Success = false; 1549 } 1550 1551 // Issue errors on arguments that are not valid for CC1. 1552 for (ArgList::iterator I = Args->begin(), E = Args->end(); 1553 I != E; ++I) { 1554 if (!(*I)->getOption().hasFlag(options::CC1Option)) { 1555 Diags.Report(diag::err_drv_unknown_argument) << (*I)->getAsString(*Args); 1556 Success = false; 1557 } 1558 } 1559 1560 Success = ParseAnalyzerArgs(*Res.getAnalyzerOpts(), *Args, Diags) && Success; 1561 Success = ParseMigratorArgs(Res.getMigratorOpts(), *Args) && Success; 1562 ParseDependencyOutputArgs(Res.getDependencyOutputOpts(), *Args); 1563 Success = ParseDiagnosticArgs(Res.getDiagnosticOpts(), *Args, &Diags) 1564 && Success; 1565 ParseCommentArgs(Res.getLangOpts()->CommentOpts, *Args); 1566 ParseFileSystemArgs(Res.getFileSystemOpts(), *Args); 1567 // FIXME: We shouldn't have to pass the DashX option around here 1568 InputKind DashX = ParseFrontendArgs(Res.getFrontendOpts(), *Args, Diags); 1569 Success = ParseCodeGenArgs(Res.getCodeGenOpts(), *Args, DashX, Diags) 1570 && Success; 1571 ParseHeaderSearchArgs(Res.getHeaderSearchOpts(), *Args); 1572 if (DashX != IK_AST && DashX != IK_LLVM_IR) { 1573 ParseLangArgs(*Res.getLangOpts(), *Args, DashX, Diags); 1574 if (Res.getFrontendOpts().ProgramAction == frontend::RewriteObjC) 1575 Res.getLangOpts()->ObjCExceptions = 1; 1576 } 1577 // FIXME: ParsePreprocessorArgs uses the FileManager to read the contents of 1578 // PCH file and find the original header name. Remove the need to do that in 1579 // ParsePreprocessorArgs and remove the FileManager 1580 // parameters from the function and the "FileManager.h" #include. 1581 FileManager FileMgr(Res.getFileSystemOpts()); 1582 ParsePreprocessorArgs(Res.getPreprocessorOpts(), *Args, FileMgr, Diags); 1583 ParsePreprocessorOutputArgs(Res.getPreprocessorOutputOpts(), *Args, 1584 Res.getFrontendOpts().ProgramAction); 1585 ParseTargetArgs(Res.getTargetOpts(), *Args); 1586 1587 return Success; 1588 } 1589 1590 namespace { 1591 1592 class ModuleSignature { 1593 SmallVector<uint64_t, 16> Data; 1594 unsigned CurBit; 1595 uint64_t CurValue; 1596 1597 public: 1598 ModuleSignature() : CurBit(0), CurValue(0) { } 1599 1600 void add(uint64_t Value, unsigned Bits); 1601 void add(StringRef Value); 1602 void flush(); 1603 1604 llvm::APInt getAsInteger() const; 1605 }; 1606 } 1607 1608 void ModuleSignature::add(uint64_t Value, unsigned int NumBits) { 1609 CurValue |= Value << CurBit; 1610 if (CurBit + NumBits < 64) { 1611 CurBit += NumBits; 1612 return; 1613 } 1614 1615 // Add the current word. 1616 Data.push_back(CurValue); 1617 1618 if (CurBit) 1619 CurValue = Value >> (64-CurBit); 1620 else 1621 CurValue = 0; 1622 CurBit = (CurBit+NumBits) & 63; 1623 } 1624 1625 void ModuleSignature::flush() { 1626 if (CurBit == 0) 1627 return; 1628 1629 Data.push_back(CurValue); 1630 CurBit = 0; 1631 CurValue = 0; 1632 } 1633 1634 void ModuleSignature::add(StringRef Value) { 1635 for (StringRef::iterator I = Value.begin(), IEnd = Value.end(); I != IEnd;++I) 1636 add(*I, 8); 1637 } 1638 1639 llvm::APInt ModuleSignature::getAsInteger() const { 1640 return llvm::APInt(Data.size() * 64, Data); 1641 } 1642 1643 std::string CompilerInvocation::getModuleHash() const { 1644 // Note: For QoI reasons, the things we use as a hash here should all be 1645 // dumped via the -module-info flag. 1646 using llvm::hash_code; 1647 using llvm::hash_value; 1648 using llvm::hash_combine; 1649 1650 // Start the signature with the compiler version. 1651 // FIXME: We'd rather use something more cryptographically sound than 1652 // CityHash, but this will do for now. 1653 hash_code code = hash_value(getClangFullRepositoryVersion()); 1654 1655 // Extend the signature with the language options 1656 #define LANGOPT(Name, Bits, Default, Description) \ 1657 code = hash_combine(code, LangOpts->Name); 1658 #define ENUM_LANGOPT(Name, Type, Bits, Default, Description) \ 1659 code = hash_combine(code, static_cast<unsigned>(LangOpts->get##Name())); 1660 #define BENIGN_LANGOPT(Name, Bits, Default, Description) 1661 #define BENIGN_ENUM_LANGOPT(Name, Type, Bits, Default, Description) 1662 #include "clang/Basic/LangOptions.def" 1663 1664 // Extend the signature with the target options. 1665 code = hash_combine(code, TargetOpts->Triple, TargetOpts->CPU, 1666 TargetOpts->ABI, TargetOpts->CXXABI, 1667 TargetOpts->LinkerVersion); 1668 for (unsigned i = 0, n = TargetOpts->FeaturesAsWritten.size(); i != n; ++i) 1669 code = hash_combine(code, TargetOpts->FeaturesAsWritten[i]); 1670 1671 // Extend the signature with preprocessor options. 1672 const PreprocessorOptions &ppOpts = getPreprocessorOpts(); 1673 const HeaderSearchOptions &hsOpts = getHeaderSearchOpts(); 1674 code = hash_combine(code, ppOpts.UsePredefines, ppOpts.DetailedRecord); 1675 1676 std::vector<StringRef> MacroDefs; 1677 for (std::vector<std::pair<std::string, bool/*isUndef*/> >::const_iterator 1678 I = getPreprocessorOpts().Macros.begin(), 1679 IEnd = getPreprocessorOpts().Macros.end(); 1680 I != IEnd; ++I) { 1681 // If we're supposed to ignore this macro for the purposes of modules, 1682 // don't put it into the hash. 1683 if (!hsOpts.ModulesIgnoreMacros.empty()) { 1684 // Check whether we're ignoring this macro. 1685 StringRef MacroDef = I->first; 1686 if (hsOpts.ModulesIgnoreMacros.count(MacroDef.split('=').first)) 1687 continue; 1688 } 1689 1690 code = hash_combine(code, I->first, I->second); 1691 } 1692 1693 // Extend the signature with the sysroot. 1694 code = hash_combine(code, hsOpts.Sysroot, hsOpts.UseBuiltinIncludes, 1695 hsOpts.UseStandardSystemIncludes, 1696 hsOpts.UseStandardCXXIncludes, 1697 hsOpts.UseLibcxx); 1698 1699 return llvm::APInt(64, code).toString(36, /*Signed=*/false); 1700 } 1701