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