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