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