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 #include "llvm/Support/system_error.h" 33 using namespace clang; 34 35 //===----------------------------------------------------------------------===// 36 // Initialization. 37 //===----------------------------------------------------------------------===// 38 39 CompilerInvocationBase::CompilerInvocationBase() 40 : LangOpts(new LangOptions()), TargetOpts(new TargetOptions()), 41 DiagnosticOpts(new DiagnosticOptions()), 42 HeaderSearchOpts(new HeaderSearchOptions()), 43 PreprocessorOpts(new PreprocessorOptions()) {} 44 45 CompilerInvocationBase::CompilerInvocationBase(const CompilerInvocationBase &X) 46 : RefCountedBase<CompilerInvocation>(), 47 LangOpts(new LangOptions(*X.getLangOpts())), 48 TargetOpts(new TargetOptions(X.getTargetOpts())), 49 DiagnosticOpts(new DiagnosticOptions(X.getDiagnosticOpts())), 50 HeaderSearchOpts(new HeaderSearchOptions(X.getHeaderSearchOpts())), 51 PreprocessorOpts(new PreprocessorOptions(X.getPreprocessorOpts())) {} 52 53 //===----------------------------------------------------------------------===// 54 // Deserialization (from args) 55 //===----------------------------------------------------------------------===// 56 57 using namespace clang::driver; 58 using namespace clang::driver::options; 59 60 // 61 62 static unsigned getOptimizationLevel(ArgList &Args, InputKind IK, 63 DiagnosticsEngine &Diags) { 64 unsigned DefaultOpt = 0; 65 if (IK == IK_OpenCL && !Args.hasArg(OPT_cl_opt_disable)) 66 DefaultOpt = 2; 67 68 if (Arg *A = Args.getLastArg(options::OPT_O_Group)) { 69 if (A->getOption().matches(options::OPT_O0)) 70 return 0; 71 72 if (A->getOption().matches(options::OPT_Ofast)) 73 return 3; 74 75 assert (A->getOption().matches(options::OPT_O)); 76 77 StringRef S(A->getValue()); 78 if (S == "s" || S == "z" || S.empty()) 79 return 2; 80 81 return Args.getLastArgIntValue(OPT_O, DefaultOpt, Diags); 82 } 83 84 return DefaultOpt; 85 } 86 87 static unsigned getOptimizationLevelSize(ArgList &Args) { 88 if (Arg *A = Args.getLastArg(options::OPT_O_Group)) { 89 if (A->getOption().matches(options::OPT_O)) { 90 switch (A->getValue()[0]) { 91 default: 92 return 0; 93 case 's': 94 return 1; 95 case 'z': 96 return 2; 97 } 98 } 99 } 100 return 0; 101 } 102 103 static void addWarningArgs(ArgList &Args, std::vector<std::string> &Warnings) { 104 for (arg_iterator I = Args.filtered_begin(OPT_W_Group), 105 E = Args.filtered_end(); I != E; ++I) { 106 Arg *A = *I; 107 // If the argument is a pure flag, add its name (minus the "W" at the beginning) 108 // to the warning list. Else, add its value (for the OPT_W case). 109 if (A->getOption().getKind() == Option::FlagClass) { 110 Warnings.push_back(A->getOption().getName().substr(1)); 111 } else { 112 for (unsigned Idx = 0, End = A->getNumValues(); 113 Idx < End; ++Idx) { 114 StringRef V = A->getValue(Idx); 115 // "-Wl," and such are not warning options. 116 // FIXME: Should be handled by putting these in separate flags. 117 if (V.startswith("l,") || V.startswith("a,") || V.startswith("p,")) 118 continue; 119 120 Warnings.push_back(V); 121 } 122 } 123 } 124 } 125 126 static bool ParseAnalyzerArgs(AnalyzerOptions &Opts, ArgList &Args, 127 DiagnosticsEngine &Diags) { 128 using namespace options; 129 bool Success = true; 130 if (Arg *A = Args.getLastArg(OPT_analyzer_store)) { 131 StringRef Name = A->getValue(); 132 AnalysisStores Value = llvm::StringSwitch<AnalysisStores>(Name) 133 #define ANALYSIS_STORE(NAME, CMDFLAG, DESC, CREATFN) \ 134 .Case(CMDFLAG, NAME##Model) 135 #include "clang/StaticAnalyzer/Core/Analyses.def" 136 .Default(NumStores); 137 if (Value == NumStores) { 138 Diags.Report(diag::err_drv_invalid_value) 139 << A->getAsString(Args) << Name; 140 Success = false; 141 } else { 142 Opts.AnalysisStoreOpt = Value; 143 } 144 } 145 146 if (Arg *A = Args.getLastArg(OPT_analyzer_constraints)) { 147 StringRef Name = A->getValue(); 148 AnalysisConstraints Value = llvm::StringSwitch<AnalysisConstraints>(Name) 149 #define ANALYSIS_CONSTRAINTS(NAME, CMDFLAG, DESC, CREATFN) \ 150 .Case(CMDFLAG, NAME##Model) 151 #include "clang/StaticAnalyzer/Core/Analyses.def" 152 .Default(NumConstraints); 153 if (Value == NumConstraints) { 154 Diags.Report(diag::err_drv_invalid_value) 155 << A->getAsString(Args) << Name; 156 Success = false; 157 } else { 158 Opts.AnalysisConstraintsOpt = Value; 159 } 160 } 161 162 if (Arg *A = Args.getLastArg(OPT_analyzer_output)) { 163 StringRef Name = A->getValue(); 164 AnalysisDiagClients Value = llvm::StringSwitch<AnalysisDiagClients>(Name) 165 #define ANALYSIS_DIAGNOSTICS(NAME, CMDFLAG, DESC, CREATFN, AUTOCREAT) \ 166 .Case(CMDFLAG, PD_##NAME) 167 #include "clang/StaticAnalyzer/Core/Analyses.def" 168 .Default(NUM_ANALYSIS_DIAG_CLIENTS); 169 if (Value == NUM_ANALYSIS_DIAG_CLIENTS) { 170 Diags.Report(diag::err_drv_invalid_value) 171 << A->getAsString(Args) << Name; 172 Success = false; 173 } else { 174 Opts.AnalysisDiagOpt = Value; 175 } 176 } 177 178 if (Arg *A = Args.getLastArg(OPT_analyzer_purge)) { 179 StringRef Name = A->getValue(); 180 AnalysisPurgeMode Value = llvm::StringSwitch<AnalysisPurgeMode>(Name) 181 #define ANALYSIS_PURGE(NAME, CMDFLAG, DESC) \ 182 .Case(CMDFLAG, NAME) 183 #include "clang/StaticAnalyzer/Core/Analyses.def" 184 .Default(NumPurgeModes); 185 if (Value == NumPurgeModes) { 186 Diags.Report(diag::err_drv_invalid_value) 187 << A->getAsString(Args) << Name; 188 Success = false; 189 } else { 190 Opts.AnalysisPurgeOpt = Value; 191 } 192 } 193 194 if (Arg *A = Args.getLastArg(OPT_analyzer_inlining_mode)) { 195 StringRef Name = A->getValue(); 196 AnalysisInliningMode Value = llvm::StringSwitch<AnalysisInliningMode>(Name) 197 #define ANALYSIS_INLINING_MODE(NAME, CMDFLAG, DESC) \ 198 .Case(CMDFLAG, NAME) 199 #include "clang/StaticAnalyzer/Core/Analyses.def" 200 .Default(NumInliningModes); 201 if (Value == NumInliningModes) { 202 Diags.Report(diag::err_drv_invalid_value) 203 << A->getAsString(Args) << Name; 204 Success = false; 205 } else { 206 Opts.InliningMode = Value; 207 } 208 } 209 210 Opts.ShowCheckerHelp = Args.hasArg(OPT_analyzer_checker_help); 211 Opts.visualizeExplodedGraphWithGraphViz = 212 Args.hasArg(OPT_analyzer_viz_egraph_graphviz); 213 Opts.visualizeExplodedGraphWithUbiGraph = 214 Args.hasArg(OPT_analyzer_viz_egraph_ubigraph); 215 Opts.NoRetryExhausted = Args.hasArg(OPT_analyzer_disable_retry_exhausted); 216 Opts.AnalyzeAll = Args.hasArg(OPT_analyzer_opt_analyze_headers); 217 Opts.AnalyzerDisplayProgress = Args.hasArg(OPT_analyzer_display_progress); 218 Opts.AnalyzeNestedBlocks = 219 Args.hasArg(OPT_analyzer_opt_analyze_nested_blocks); 220 Opts.eagerlyAssumeBinOpBifurcation = Args.hasArg(OPT_analyzer_eagerly_assume); 221 Opts.AnalyzeSpecificFunction = Args.getLastArgValue(OPT_analyze_function); 222 Opts.UnoptimizedCFG = Args.hasArg(OPT_analysis_UnoptimizedCFG); 223 Opts.TrimGraph = Args.hasArg(OPT_trim_egraph); 224 Opts.maxBlockVisitOnPath = Args.getLastArgIntValue(OPT_analyzer_max_loop, 4, Diags); 225 Opts.PrintStats = Args.hasArg(OPT_analyzer_stats); 226 Opts.InlineMaxStackDepth = 227 Args.getLastArgIntValue(OPT_analyzer_inline_max_stack_depth, 228 Opts.InlineMaxStackDepth, Diags); 229 230 Opts.CheckersControlList.clear(); 231 for (arg_iterator it = Args.filtered_begin(OPT_analyzer_checker, 232 OPT_analyzer_disable_checker), 233 ie = Args.filtered_end(); it != ie; ++it) { 234 const Arg *A = *it; 235 A->claim(); 236 bool enable = (A->getOption().getID() == OPT_analyzer_checker); 237 // We can have a list of comma separated checker names, e.g: 238 // '-analyzer-checker=cocoa,unix' 239 StringRef checkerList = A->getValue(); 240 SmallVector<StringRef, 4> checkers; 241 checkerList.split(checkers, ","); 242 for (unsigned i = 0, e = checkers.size(); i != e; ++i) 243 Opts.CheckersControlList.push_back(std::make_pair(checkers[i], enable)); 244 } 245 246 // Go through the analyzer configuration options. 247 for (arg_iterator it = Args.filtered_begin(OPT_analyzer_config), 248 ie = Args.filtered_end(); it != ie; ++it) { 249 const Arg *A = *it; 250 A->claim(); 251 // We can have a list of comma separated config names, e.g: 252 // '-analyzer-config key1=val1,key2=val2' 253 StringRef configList = A->getValue(); 254 SmallVector<StringRef, 4> configVals; 255 configList.split(configVals, ","); 256 for (unsigned i = 0, e = configVals.size(); i != e; ++i) { 257 StringRef key, val; 258 llvm::tie(key, val) = configVals[i].split("="); 259 if (val.empty()) { 260 Diags.Report(SourceLocation(), 261 diag::err_analyzer_config_no_value) << configVals[i]; 262 Success = false; 263 break; 264 } 265 if (val.find('=') != StringRef::npos) { 266 Diags.Report(SourceLocation(), 267 diag::err_analyzer_config_multiple_values) 268 << configVals[i]; 269 Success = false; 270 break; 271 } 272 Opts.Config[key] = val; 273 } 274 } 275 276 return Success; 277 } 278 279 static bool ParseMigratorArgs(MigratorOptions &Opts, ArgList &Args) { 280 Opts.NoNSAllocReallocError = Args.hasArg(OPT_migrator_no_nsalloc_error); 281 Opts.NoFinalizeRemoval = Args.hasArg(OPT_migrator_no_finalize_removal); 282 return true; 283 } 284 285 static void ParseCommentArgs(CommentOptions &Opts, ArgList &Args) { 286 Opts.BlockCommandNames = Args.getAllArgValues(OPT_fcomment_block_commands); 287 Opts.ParseAllComments = Args.hasArg(OPT_fparse_all_comments); 288 } 289 290 static bool ParseCodeGenArgs(CodeGenOptions &Opts, ArgList &Args, InputKind IK, 291 DiagnosticsEngine &Diags) { 292 using namespace options; 293 bool Success = true; 294 295 unsigned OptLevel = getOptimizationLevel(Args, IK, Diags); 296 if (OptLevel > 3) { 297 Diags.Report(diag::err_drv_invalid_value) 298 << Args.getLastArg(OPT_O)->getAsString(Args) << OptLevel; 299 OptLevel = 3; 300 Success = false; 301 } 302 Opts.OptimizationLevel = OptLevel; 303 304 // We must always run at least the always inlining pass. 305 Opts.setInlining( 306 (Opts.OptimizationLevel > 1) ? CodeGenOptions::NormalInlining 307 : CodeGenOptions::OnlyAlwaysInlining); 308 // -fno-inline-functions overrides OptimizationLevel > 1. 309 Opts.NoInline = Args.hasArg(OPT_fno_inline); 310 Opts.setInlining(Args.hasArg(OPT_fno_inline_functions) ? 311 CodeGenOptions::OnlyAlwaysInlining : Opts.getInlining()); 312 313 if (Args.hasArg(OPT_gline_tables_only)) { 314 Opts.setDebugInfo(CodeGenOptions::DebugLineTablesOnly); 315 } else if (Args.hasArg(OPT_g_Flag)) { 316 if (Args.hasFlag(OPT_flimit_debug_info, OPT_fno_limit_debug_info, true)) 317 Opts.setDebugInfo(CodeGenOptions::LimitedDebugInfo); 318 else 319 Opts.setDebugInfo(CodeGenOptions::FullDebugInfo); 320 } 321 Opts.DebugColumnInfo = Args.hasArg(OPT_dwarf_column_info); 322 Opts.SplitDwarfFile = Args.getLastArgValue(OPT_split_dwarf_file); 323 324 Opts.DisableLLVMOpts = Args.hasArg(OPT_disable_llvm_optzns); 325 Opts.DisableRedZone = Args.hasArg(OPT_disable_red_zone); 326 Opts.ForbidGuardVariables = Args.hasArg(OPT_fforbid_guard_variables); 327 Opts.UseRegisterSizedBitfieldAccess = Args.hasArg( 328 OPT_fuse_register_sized_bitfield_access); 329 Opts.RelaxedAliasing = Args.hasArg(OPT_relaxed_aliasing); 330 Opts.StructPathTBAA = Args.hasArg(OPT_struct_path_tbaa); 331 Opts.DwarfDebugFlags = Args.getLastArgValue(OPT_dwarf_debug_flags); 332 Opts.MergeAllConstants = !Args.hasArg(OPT_fno_merge_all_constants); 333 Opts.NoCommon = Args.hasArg(OPT_fno_common); 334 Opts.NoImplicitFloat = Args.hasArg(OPT_no_implicit_float); 335 Opts.OptimizeSize = getOptimizationLevelSize(Args); 336 Opts.SimplifyLibCalls = !(Args.hasArg(OPT_fno_builtin) || 337 Args.hasArg(OPT_ffreestanding)); 338 Opts.UnrollLoops = Args.hasArg(OPT_funroll_loops) || 339 (Opts.OptimizationLevel > 1 && !Opts.OptimizeSize); 340 341 Opts.Autolink = !Args.hasArg(OPT_fno_autolink); 342 Opts.AsmVerbose = Args.hasArg(OPT_masm_verbose); 343 Opts.ObjCAutoRefCountExceptions = Args.hasArg(OPT_fobjc_arc_exceptions); 344 Opts.CUDAIsDevice = Args.hasArg(OPT_fcuda_is_device); 345 Opts.CXAAtExit = !Args.hasArg(OPT_fno_use_cxa_atexit); 346 Opts.CXXCtorDtorAliases = Args.hasArg(OPT_mconstructor_aliases); 347 Opts.CodeModel = Args.getLastArgValue(OPT_mcode_model); 348 Opts.DebugPass = Args.getLastArgValue(OPT_mdebug_pass); 349 Opts.DisableFPElim = Args.hasArg(OPT_mdisable_fp_elim); 350 Opts.DisableTailCalls = Args.hasArg(OPT_mdisable_tail_calls); 351 Opts.FloatABI = Args.getLastArgValue(OPT_mfloat_abi); 352 Opts.HiddenWeakVTables = Args.hasArg(OPT_fhidden_weak_vtables); 353 Opts.LessPreciseFPMAD = Args.hasArg(OPT_cl_mad_enable); 354 Opts.LimitFloatPrecision = Args.getLastArgValue(OPT_mlimit_float_precision); 355 Opts.NoInfsFPMath = (Args.hasArg(OPT_menable_no_infinities) || 356 Args.hasArg(OPT_cl_finite_math_only)|| 357 Args.hasArg(OPT_cl_fast_relaxed_math)); 358 Opts.NoNaNsFPMath = (Args.hasArg(OPT_menable_no_nans) || 359 Args.hasArg(OPT_cl_finite_math_only)|| 360 Args.hasArg(OPT_cl_fast_relaxed_math)); 361 Opts.NoZeroInitializedInBSS = Args.hasArg(OPT_mno_zero_initialized_in_bss); 362 Opts.BackendOptions = Args.getAllArgValues(OPT_backend_option); 363 Opts.NumRegisterParameters = Args.getLastArgIntValue(OPT_mregparm, 0, Diags); 364 Opts.NoGlobalMerge = Args.hasArg(OPT_mno_global_merge); 365 Opts.NoExecStack = Args.hasArg(OPT_mno_exec_stack); 366 Opts.EnableSegmentedStacks = Args.hasArg(OPT_split_stacks); 367 Opts.RelaxAll = Args.hasArg(OPT_mrelax_all); 368 Opts.OmitLeafFramePointer = Args.hasArg(OPT_momit_leaf_frame_pointer); 369 Opts.SaveTempLabels = Args.hasArg(OPT_msave_temp_labels); 370 Opts.NoDwarf2CFIAsm = Args.hasArg(OPT_fno_dwarf2_cfi_asm); 371 Opts.NoDwarfDirectoryAsm = Args.hasArg(OPT_fno_dwarf_directory_asm); 372 Opts.SoftFloat = Args.hasArg(OPT_msoft_float); 373 Opts.StrictEnums = Args.hasArg(OPT_fstrict_enums); 374 Opts.UnsafeFPMath = Args.hasArg(OPT_menable_unsafe_fp_math) || 375 Args.hasArg(OPT_cl_unsafe_math_optimizations) || 376 Args.hasArg(OPT_cl_fast_relaxed_math); 377 Opts.UnwindTables = Args.hasArg(OPT_munwind_tables); 378 Opts.RelocationModel = Args.getLastArgValue(OPT_mrelocation_model, "pic"); 379 Opts.TrapFuncName = Args.getLastArgValue(OPT_ftrap_function_EQ); 380 Opts.UseInitArray = Args.hasArg(OPT_fuse_init_array); 381 382 Opts.FunctionSections = Args.hasArg(OPT_ffunction_sections); 383 Opts.DataSections = Args.hasArg(OPT_fdata_sections); 384 385 Opts.MainFileName = Args.getLastArgValue(OPT_main_file_name); 386 Opts.VerifyModule = !Args.hasArg(OPT_disable_llvm_verifier); 387 Opts.SanitizeRecover = !Args.hasArg(OPT_fno_sanitize_recover); 388 389 Opts.DisableGCov = Args.hasArg(OPT_test_coverage); 390 Opts.EmitGcovArcs = Args.hasArg(OPT_femit_coverage_data); 391 Opts.EmitGcovNotes = Args.hasArg(OPT_femit_coverage_notes); 392 if (Opts.EmitGcovArcs || Opts.EmitGcovNotes) { 393 Opts.CoverageFile = Args.getLastArgValue(OPT_coverage_file); 394 Opts.CoverageExtraChecksum = Args.hasArg(OPT_coverage_cfg_checksum); 395 Opts.CoverageNoFunctionNamesInData = 396 Args.hasArg(OPT_coverage_no_function_names_in_data); 397 if (Args.hasArg(OPT_coverage_version_EQ)) { 398 StringRef CoverageVersion = Args.getLastArgValue(OPT_coverage_version_EQ); 399 if (CoverageVersion.size() != 4) { 400 Diags.Report(diag::err_drv_invalid_value) 401 << Args.getLastArg(OPT_coverage_version_EQ)->getAsString(Args) 402 << CoverageVersion; 403 } else { 404 memcpy(Opts.CoverageVersion, CoverageVersion.data(), 4); 405 } 406 } 407 } 408 409 Opts.InstrumentFunctions = Args.hasArg(OPT_finstrument_functions); 410 Opts.InstrumentForProfiling = Args.hasArg(OPT_pg); 411 Opts.EmitOpenCLArgMetadata = Args.hasArg(OPT_cl_kernel_arg_info); 412 Opts.DebugCompilationDir = Args.getLastArgValue(OPT_fdebug_compilation_dir); 413 Opts.LinkBitcodeFile = Args.getLastArgValue(OPT_mlink_bitcode_file); 414 Opts.SanitizerBlacklistFile = Args.getLastArgValue(OPT_fsanitize_blacklist); 415 Opts.SanitizeMemoryTrackOrigins = 416 Args.hasArg(OPT_fsanitize_memory_track_origins); 417 Opts.SanitizeAddressZeroBaseShadow = 418 Args.hasArg(OPT_fsanitize_address_zero_base_shadow); 419 Opts.SanitizeUndefinedTrapOnError = 420 Args.hasArg(OPT_fsanitize_undefined_trap_on_error); 421 Opts.SSPBufferSize = 422 Args.getLastArgIntValue(OPT_stack_protector_buffer_size, 8, Diags); 423 Opts.StackRealignment = Args.hasArg(OPT_mstackrealign); 424 if (Arg *A = Args.getLastArg(OPT_mstack_alignment)) { 425 StringRef Val = A->getValue(); 426 unsigned StackAlignment = Opts.StackAlignment; 427 Val.getAsInteger(10, StackAlignment); 428 Opts.StackAlignment = StackAlignment; 429 } 430 431 if (Arg *A = Args.getLastArg(OPT_fobjc_dispatch_method_EQ)) { 432 StringRef Name = A->getValue(); 433 unsigned Method = llvm::StringSwitch<unsigned>(Name) 434 .Case("legacy", CodeGenOptions::Legacy) 435 .Case("non-legacy", CodeGenOptions::NonLegacy) 436 .Case("mixed", CodeGenOptions::Mixed) 437 .Default(~0U); 438 if (Method == ~0U) { 439 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Name; 440 Success = false; 441 } else { 442 Opts.setObjCDispatchMethod( 443 static_cast<CodeGenOptions::ObjCDispatchMethodKind>(Method)); 444 } 445 } 446 447 if (Arg *A = Args.getLastArg(OPT_ftlsmodel_EQ)) { 448 StringRef Name = A->getValue(); 449 unsigned Model = llvm::StringSwitch<unsigned>(Name) 450 .Case("global-dynamic", CodeGenOptions::GeneralDynamicTLSModel) 451 .Case("local-dynamic", CodeGenOptions::LocalDynamicTLSModel) 452 .Case("initial-exec", CodeGenOptions::InitialExecTLSModel) 453 .Case("local-exec", CodeGenOptions::LocalExecTLSModel) 454 .Default(~0U); 455 if (Model == ~0U) { 456 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Name; 457 Success = false; 458 } else { 459 Opts.setDefaultTLSModel(static_cast<CodeGenOptions::TLSModel>(Model)); 460 } 461 } 462 463 if (Arg *A = Args.getLastArg(OPT_ffp_contract)) { 464 StringRef Val = A->getValue(); 465 if (Val == "fast") 466 Opts.setFPContractMode(CodeGenOptions::FPC_Fast); 467 else if (Val == "on") 468 Opts.setFPContractMode(CodeGenOptions::FPC_On); 469 else if (Val == "off") 470 Opts.setFPContractMode(CodeGenOptions::FPC_Off); 471 else 472 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Val; 473 } 474 475 return Success; 476 } 477 478 static void ParseDependencyOutputArgs(DependencyOutputOptions &Opts, 479 ArgList &Args) { 480 using namespace options; 481 Opts.OutputFile = Args.getLastArgValue(OPT_dependency_file); 482 Opts.Targets = Args.getAllArgValues(OPT_MT); 483 Opts.IncludeSystemHeaders = Args.hasArg(OPT_sys_header_deps); 484 Opts.UsePhonyTargets = Args.hasArg(OPT_MP); 485 Opts.ShowHeaderIncludes = Args.hasArg(OPT_H); 486 Opts.HeaderIncludeOutputFile = Args.getLastArgValue(OPT_header_include_file); 487 Opts.AddMissingHeaderDeps = Args.hasArg(OPT_MG); 488 Opts.DOTOutputFile = Args.getLastArgValue(OPT_dependency_dot); 489 } 490 491 bool clang::ParseDiagnosticArgs(DiagnosticOptions &Opts, ArgList &Args, 492 DiagnosticsEngine *Diags) { 493 using namespace options; 494 bool Success = true; 495 496 Opts.DiagnosticLogFile = Args.getLastArgValue(OPT_diagnostic_log_file); 497 Opts.DiagnosticSerializationFile = 498 Args.getLastArgValue(OPT_diagnostic_serialized_file); 499 Opts.IgnoreWarnings = Args.hasArg(OPT_w); 500 Opts.NoRewriteMacros = Args.hasArg(OPT_Wno_rewrite_macros); 501 Opts.Pedantic = Args.hasArg(OPT_pedantic); 502 Opts.PedanticErrors = Args.hasArg(OPT_pedantic_errors); 503 Opts.ShowCarets = !Args.hasArg(OPT_fno_caret_diagnostics); 504 Opts.ShowColors = Args.hasArg(OPT_fcolor_diagnostics); 505 Opts.ShowColumn = Args.hasFlag(OPT_fshow_column, 506 OPT_fno_show_column, 507 /*Default=*/true); 508 Opts.ShowFixits = !Args.hasArg(OPT_fno_diagnostics_fixit_info); 509 Opts.ShowLocation = !Args.hasArg(OPT_fno_show_source_location); 510 Opts.ShowOptionNames = Args.hasArg(OPT_fdiagnostics_show_option); 511 512 // Default behavior is to not to show note include stacks. 513 Opts.ShowNoteIncludeStack = false; 514 if (Arg *A = Args.getLastArg(OPT_fdiagnostics_show_note_include_stack, 515 OPT_fno_diagnostics_show_note_include_stack)) 516 if (A->getOption().matches(OPT_fdiagnostics_show_note_include_stack)) 517 Opts.ShowNoteIncludeStack = true; 518 519 StringRef ShowOverloads = 520 Args.getLastArgValue(OPT_fshow_overloads_EQ, "all"); 521 if (ShowOverloads == "best") 522 Opts.setShowOverloads(Ovl_Best); 523 else if (ShowOverloads == "all") 524 Opts.setShowOverloads(Ovl_All); 525 else { 526 Success = false; 527 if (Diags) 528 Diags->Report(diag::err_drv_invalid_value) 529 << Args.getLastArg(OPT_fshow_overloads_EQ)->getAsString(Args) 530 << ShowOverloads; 531 } 532 533 StringRef ShowCategory = 534 Args.getLastArgValue(OPT_fdiagnostics_show_category, "none"); 535 if (ShowCategory == "none") 536 Opts.ShowCategories = 0; 537 else if (ShowCategory == "id") 538 Opts.ShowCategories = 1; 539 else if (ShowCategory == "name") 540 Opts.ShowCategories = 2; 541 else { 542 Success = false; 543 if (Diags) 544 Diags->Report(diag::err_drv_invalid_value) 545 << Args.getLastArg(OPT_fdiagnostics_show_category)->getAsString(Args) 546 << ShowCategory; 547 } 548 549 StringRef Format = 550 Args.getLastArgValue(OPT_fdiagnostics_format, "clang"); 551 if (Format == "clang") 552 Opts.setFormat(DiagnosticOptions::Clang); 553 else if (Format == "msvc") 554 Opts.setFormat(DiagnosticOptions::Msvc); 555 else if (Format == "vi") 556 Opts.setFormat(DiagnosticOptions::Vi); 557 else { 558 Success = false; 559 if (Diags) 560 Diags->Report(diag::err_drv_invalid_value) 561 << Args.getLastArg(OPT_fdiagnostics_format)->getAsString(Args) 562 << Format; 563 } 564 565 Opts.ShowSourceRanges = Args.hasArg(OPT_fdiagnostics_print_source_range_info); 566 Opts.ShowParseableFixits = Args.hasArg(OPT_fdiagnostics_parseable_fixits); 567 Opts.ShowPresumedLoc = !Args.hasArg(OPT_fno_diagnostics_use_presumed_location); 568 Opts.VerifyDiagnostics = Args.hasArg(OPT_verify); 569 Opts.ElideType = !Args.hasArg(OPT_fno_elide_type); 570 Opts.ShowTemplateTree = Args.hasArg(OPT_fdiagnostics_show_template_tree); 571 Opts.WarnOnSpellCheck = Args.hasArg(OPT_fwarn_on_spellcheck); 572 Opts.ErrorLimit = Args.getLastArgIntValue(OPT_ferror_limit, 0, Diags); 573 Opts.MacroBacktraceLimit 574 = Args.getLastArgIntValue(OPT_fmacro_backtrace_limit, 575 DiagnosticOptions::DefaultMacroBacktraceLimit, Diags); 576 Opts.TemplateBacktraceLimit 577 = Args.getLastArgIntValue(OPT_ftemplate_backtrace_limit, 578 DiagnosticOptions::DefaultTemplateBacktraceLimit, 579 Diags); 580 Opts.ConstexprBacktraceLimit 581 = Args.getLastArgIntValue(OPT_fconstexpr_backtrace_limit, 582 DiagnosticOptions::DefaultConstexprBacktraceLimit, 583 Diags); 584 Opts.TabStop = Args.getLastArgIntValue(OPT_ftabstop, 585 DiagnosticOptions::DefaultTabStop, Diags); 586 if (Opts.TabStop == 0 || Opts.TabStop > DiagnosticOptions::MaxTabStop) { 587 Opts.TabStop = DiagnosticOptions::DefaultTabStop; 588 if (Diags) 589 Diags->Report(diag::warn_ignoring_ftabstop_value) 590 << Opts.TabStop << DiagnosticOptions::DefaultTabStop; 591 } 592 Opts.MessageLength = Args.getLastArgIntValue(OPT_fmessage_length, 0, Diags); 593 addWarningArgs(Args, Opts.Warnings); 594 595 return Success; 596 } 597 598 static void ParseFileSystemArgs(FileSystemOptions &Opts, ArgList &Args) { 599 Opts.WorkingDir = Args.getLastArgValue(OPT_working_directory); 600 } 601 602 static InputKind ParseFrontendArgs(FrontendOptions &Opts, ArgList &Args, 603 DiagnosticsEngine &Diags) { 604 using namespace options; 605 Opts.ProgramAction = frontend::ParseSyntaxOnly; 606 if (const Arg *A = Args.getLastArg(OPT_Action_Group)) { 607 switch (A->getOption().getID()) { 608 default: 609 llvm_unreachable("Invalid option in group!"); 610 case OPT_ast_list: 611 Opts.ProgramAction = frontend::ASTDeclList; break; 612 case OPT_ast_dump: 613 Opts.ProgramAction = frontend::ASTDump; break; 614 case OPT_ast_dump_xml: 615 Opts.ProgramAction = frontend::ASTDumpXML; break; 616 case OPT_ast_print: 617 Opts.ProgramAction = frontend::ASTPrint; break; 618 case OPT_ast_view: 619 Opts.ProgramAction = frontend::ASTView; break; 620 case OPT_dump_raw_tokens: 621 Opts.ProgramAction = frontend::DumpRawTokens; break; 622 case OPT_dump_tokens: 623 Opts.ProgramAction = frontend::DumpTokens; break; 624 case OPT_S: 625 Opts.ProgramAction = frontend::EmitAssembly; break; 626 case OPT_emit_llvm_bc: 627 Opts.ProgramAction = frontend::EmitBC; break; 628 case OPT_emit_html: 629 Opts.ProgramAction = frontend::EmitHTML; break; 630 case OPT_emit_llvm: 631 Opts.ProgramAction = frontend::EmitLLVM; break; 632 case OPT_emit_llvm_only: 633 Opts.ProgramAction = frontend::EmitLLVMOnly; break; 634 case OPT_emit_codegen_only: 635 Opts.ProgramAction = frontend::EmitCodeGenOnly; break; 636 case OPT_emit_obj: 637 Opts.ProgramAction = frontend::EmitObj; break; 638 case OPT_fixit_EQ: 639 Opts.FixItSuffix = A->getValue(); 640 // fall-through! 641 case OPT_fixit: 642 Opts.ProgramAction = frontend::FixIt; break; 643 case OPT_emit_module: 644 Opts.ProgramAction = frontend::GenerateModule; break; 645 case OPT_emit_pch: 646 Opts.ProgramAction = frontend::GeneratePCH; break; 647 case OPT_emit_pth: 648 Opts.ProgramAction = frontend::GeneratePTH; break; 649 case OPT_init_only: 650 Opts.ProgramAction = frontend::InitOnly; break; 651 case OPT_fsyntax_only: 652 Opts.ProgramAction = frontend::ParseSyntaxOnly; break; 653 case OPT_module_file_info: 654 Opts.ProgramAction = frontend::ModuleFileInfo; break; 655 case OPT_print_decl_contexts: 656 Opts.ProgramAction = frontend::PrintDeclContext; break; 657 case OPT_print_preamble: 658 Opts.ProgramAction = frontend::PrintPreamble; break; 659 case OPT_E: 660 Opts.ProgramAction = frontend::PrintPreprocessedInput; break; 661 case OPT_rewrite_macros: 662 Opts.ProgramAction = frontend::RewriteMacros; break; 663 case OPT_rewrite_objc: 664 Opts.ProgramAction = frontend::RewriteObjC; break; 665 case OPT_rewrite_test: 666 Opts.ProgramAction = frontend::RewriteTest; break; 667 case OPT_analyze: 668 Opts.ProgramAction = frontend::RunAnalysis; break; 669 case OPT_migrate: 670 Opts.ProgramAction = frontend::MigrateSource; break; 671 case OPT_Eonly: 672 Opts.ProgramAction = frontend::RunPreprocessorOnly; break; 673 } 674 } 675 676 if (const Arg* A = Args.getLastArg(OPT_plugin)) { 677 Opts.Plugins.push_back(A->getValue(0)); 678 Opts.ProgramAction = frontend::PluginAction; 679 Opts.ActionName = A->getValue(); 680 681 for (arg_iterator it = Args.filtered_begin(OPT_plugin_arg), 682 end = Args.filtered_end(); it != end; ++it) { 683 if ((*it)->getValue(0) == Opts.ActionName) 684 Opts.PluginArgs.push_back((*it)->getValue(1)); 685 } 686 } 687 688 Opts.AddPluginActions = Args.getAllArgValues(OPT_add_plugin); 689 Opts.AddPluginArgs.resize(Opts.AddPluginActions.size()); 690 for (int i = 0, e = Opts.AddPluginActions.size(); i != e; ++i) { 691 for (arg_iterator it = Args.filtered_begin(OPT_plugin_arg), 692 end = Args.filtered_end(); it != end; ++it) { 693 if ((*it)->getValue(0) == Opts.AddPluginActions[i]) 694 Opts.AddPluginArgs[i].push_back((*it)->getValue(1)); 695 } 696 } 697 698 if (const Arg *A = Args.getLastArg(OPT_code_completion_at)) { 699 Opts.CodeCompletionAt = 700 ParsedSourceLocation::FromString(A->getValue()); 701 if (Opts.CodeCompletionAt.FileName.empty()) 702 Diags.Report(diag::err_drv_invalid_value) 703 << A->getAsString(Args) << A->getValue(); 704 } 705 Opts.DisableFree = Args.hasArg(OPT_disable_free); 706 707 Opts.OutputFile = Args.getLastArgValue(OPT_o); 708 Opts.Plugins = Args.getAllArgValues(OPT_load); 709 Opts.RelocatablePCH = Args.hasArg(OPT_relocatable_pch); 710 Opts.ShowHelp = Args.hasArg(OPT_help); 711 Opts.ShowStats = Args.hasArg(OPT_print_stats); 712 Opts.ShowTimers = Args.hasArg(OPT_ftime_report); 713 Opts.ShowVersion = Args.hasArg(OPT_version); 714 Opts.ASTMergeFiles = Args.getAllArgValues(OPT_ast_merge); 715 Opts.LLVMArgs = Args.getAllArgValues(OPT_mllvm); 716 Opts.FixWhatYouCan = Args.hasArg(OPT_fix_what_you_can); 717 Opts.FixOnlyWarnings = Args.hasArg(OPT_fix_only_warnings); 718 Opts.FixAndRecompile = Args.hasArg(OPT_fixit_recompile); 719 Opts.FixToTemporaries = Args.hasArg(OPT_fixit_to_temp); 720 Opts.ASTDumpFilter = Args.getLastArgValue(OPT_ast_dump_filter); 721 Opts.UseGlobalModuleIndex = !Args.hasArg(OPT_fno_modules_global_index); 722 Opts.GenerateGlobalModuleIndex = Opts.UseGlobalModuleIndex; 723 724 Opts.CodeCompleteOpts.IncludeMacros 725 = Args.hasArg(OPT_code_completion_macros); 726 Opts.CodeCompleteOpts.IncludeCodePatterns 727 = Args.hasArg(OPT_code_completion_patterns); 728 Opts.CodeCompleteOpts.IncludeGlobals 729 = !Args.hasArg(OPT_no_code_completion_globals); 730 Opts.CodeCompleteOpts.IncludeBriefComments 731 = Args.hasArg(OPT_code_completion_brief_comments); 732 733 Opts.OverrideRecordLayoutsFile 734 = Args.getLastArgValue(OPT_foverride_record_layout_EQ); 735 if (const Arg *A = Args.getLastArg(OPT_arcmt_check, 736 OPT_arcmt_modify, 737 OPT_arcmt_migrate)) { 738 switch (A->getOption().getID()) { 739 default: 740 llvm_unreachable("missed a case"); 741 case OPT_arcmt_check: 742 Opts.ARCMTAction = FrontendOptions::ARCMT_Check; 743 break; 744 case OPT_arcmt_modify: 745 Opts.ARCMTAction = FrontendOptions::ARCMT_Modify; 746 break; 747 case OPT_arcmt_migrate: 748 Opts.ARCMTAction = FrontendOptions::ARCMT_Migrate; 749 break; 750 } 751 } 752 Opts.MTMigrateDir = Args.getLastArgValue(OPT_mt_migrate_directory); 753 Opts.ARCMTMigrateReportOut 754 = Args.getLastArgValue(OPT_arcmt_migrate_report_output); 755 Opts.ARCMTMigrateEmitARCErrors 756 = Args.hasArg(OPT_arcmt_migrate_emit_arc_errors); 757 758 if (Args.hasArg(OPT_objcmt_migrate_literals)) 759 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_Literals; 760 if (Args.hasArg(OPT_objcmt_migrate_subscripting)) 761 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_Subscripting; 762 763 if (Opts.ARCMTAction != FrontendOptions::ARCMT_None && 764 Opts.ObjCMTAction != FrontendOptions::ObjCMT_None) { 765 Diags.Report(diag::err_drv_argument_not_allowed_with) 766 << "ARC migration" << "ObjC migration"; 767 } 768 769 InputKind DashX = IK_None; 770 if (const Arg *A = Args.getLastArg(OPT_x)) { 771 DashX = llvm::StringSwitch<InputKind>(A->getValue()) 772 .Case("c", IK_C) 773 .Case("cl", IK_OpenCL) 774 .Case("cuda", IK_CUDA) 775 .Case("c++", IK_CXX) 776 .Case("objective-c", IK_ObjC) 777 .Case("objective-c++", IK_ObjCXX) 778 .Case("cpp-output", IK_PreprocessedC) 779 .Case("assembler-with-cpp", IK_Asm) 780 .Case("c++-cpp-output", IK_PreprocessedCXX) 781 .Case("objective-c-cpp-output", IK_PreprocessedObjC) 782 .Case("objc-cpp-output", IK_PreprocessedObjC) 783 .Case("objective-c++-cpp-output", IK_PreprocessedObjCXX) 784 .Case("objc++-cpp-output", IK_PreprocessedObjCXX) 785 .Case("c-header", IK_C) 786 .Case("cl-header", IK_OpenCL) 787 .Case("objective-c-header", IK_ObjC) 788 .Case("c++-header", IK_CXX) 789 .Case("objective-c++-header", IK_ObjCXX) 790 .Cases("ast", "pcm", IK_AST) 791 .Case("ir", IK_LLVM_IR) 792 .Default(IK_None); 793 if (DashX == IK_None) 794 Diags.Report(diag::err_drv_invalid_value) 795 << A->getAsString(Args) << A->getValue(); 796 } 797 798 // '-' is the default input if none is given. 799 std::vector<std::string> Inputs = Args.getAllArgValues(OPT_INPUT); 800 Opts.Inputs.clear(); 801 if (Inputs.empty()) 802 Inputs.push_back("-"); 803 for (unsigned i = 0, e = Inputs.size(); i != e; ++i) { 804 InputKind IK = DashX; 805 if (IK == IK_None) { 806 IK = FrontendOptions::getInputKindForExtension( 807 StringRef(Inputs[i]).rsplit('.').second); 808 // FIXME: Remove this hack. 809 if (i == 0) 810 DashX = IK; 811 } 812 Opts.Inputs.push_back(FrontendInputFile(Inputs[i], IK)); 813 } 814 815 return DashX; 816 } 817 818 std::string CompilerInvocation::GetResourcesPath(const char *Argv0, 819 void *MainAddr) { 820 llvm::sys::Path P = llvm::sys::Path::GetMainExecutable(Argv0, MainAddr); 821 822 if (!P.isEmpty()) { 823 P.eraseComponent(); // Remove /clang from foo/bin/clang 824 P.eraseComponent(); // Remove /bin from foo/bin 825 826 // Get foo/lib/clang/<version>/include 827 P.appendComponent("lib"); 828 P.appendComponent("clang"); 829 P.appendComponent(CLANG_VERSION_STRING); 830 } 831 832 return P.str(); 833 } 834 835 static void ParseHeaderSearchArgs(HeaderSearchOptions &Opts, ArgList &Args) { 836 using namespace options; 837 Opts.Sysroot = Args.getLastArgValue(OPT_isysroot, "/"); 838 Opts.Verbose = Args.hasArg(OPT_v); 839 Opts.UseBuiltinIncludes = !Args.hasArg(OPT_nobuiltininc); 840 Opts.UseStandardSystemIncludes = !Args.hasArg(OPT_nostdsysteminc); 841 Opts.UseStandardCXXIncludes = !Args.hasArg(OPT_nostdincxx); 842 if (const Arg *A = Args.getLastArg(OPT_stdlib_EQ)) 843 Opts.UseLibcxx = (strcmp(A->getValue(), "libc++") == 0); 844 Opts.ResourceDir = Args.getLastArgValue(OPT_resource_dir); 845 Opts.ModuleCachePath = Args.getLastArgValue(OPT_fmodules_cache_path); 846 Opts.DisableModuleHash = Args.hasArg(OPT_fdisable_module_hash); 847 Opts.ModuleCachePruneInterval 848 = Args.getLastArgIntValue(OPT_fmodules_prune_interval, 7*24*60*60); 849 Opts.ModuleCachePruneAfter 850 = Args.getLastArgIntValue(OPT_fmodules_prune_after, 31*24*60*60); 851 for (arg_iterator it = Args.filtered_begin(OPT_fmodules_ignore_macro), 852 ie = Args.filtered_end(); it != ie; ++it) { 853 StringRef MacroDef = (*it)->getValue(); 854 Opts.ModulesIgnoreMacros.insert(MacroDef.split('=').first); 855 } 856 857 // Add -I..., -F..., and -index-header-map options in order. 858 bool IsIndexHeaderMap = false; 859 for (arg_iterator it = Args.filtered_begin(OPT_I, OPT_F, 860 OPT_index_header_map), 861 ie = Args.filtered_end(); it != ie; ++it) { 862 if ((*it)->getOption().matches(OPT_index_header_map)) { 863 // -index-header-map applies to the next -I or -F. 864 IsIndexHeaderMap = true; 865 continue; 866 } 867 868 frontend::IncludeDirGroup Group 869 = IsIndexHeaderMap? frontend::IndexHeaderMap : frontend::Angled; 870 871 Opts.AddPath((*it)->getValue(), Group, 872 /*IsFramework=*/ (*it)->getOption().matches(OPT_F), true); 873 IsIndexHeaderMap = false; 874 } 875 876 // Add -iprefix/-iwithprefix/-iwithprefixbefore options. 877 StringRef Prefix = ""; // FIXME: This isn't the correct default prefix. 878 for (arg_iterator it = Args.filtered_begin(OPT_iprefix, OPT_iwithprefix, 879 OPT_iwithprefixbefore), 880 ie = Args.filtered_end(); it != ie; ++it) { 881 const Arg *A = *it; 882 if (A->getOption().matches(OPT_iprefix)) 883 Prefix = A->getValue(); 884 else if (A->getOption().matches(OPT_iwithprefix)) 885 Opts.AddPath(Prefix.str() + A->getValue(), 886 frontend::After, false, true); 887 else 888 Opts.AddPath(Prefix.str() + A->getValue(), 889 frontend::Angled, false, true); 890 } 891 892 for (arg_iterator it = Args.filtered_begin(OPT_idirafter), 893 ie = Args.filtered_end(); it != ie; ++it) 894 Opts.AddPath((*it)->getValue(), frontend::After, false, true); 895 for (arg_iterator it = Args.filtered_begin(OPT_iquote), 896 ie = Args.filtered_end(); it != ie; ++it) 897 Opts.AddPath((*it)->getValue(), frontend::Quoted, false, true); 898 for (arg_iterator it = Args.filtered_begin(OPT_isystem, 899 OPT_iwithsysroot), ie = Args.filtered_end(); it != ie; ++it) 900 Opts.AddPath((*it)->getValue(), frontend::System, false, 901 !(*it)->getOption().matches(OPT_iwithsysroot)); 902 for (arg_iterator it = Args.filtered_begin(OPT_iframework), 903 ie = Args.filtered_end(); it != ie; ++it) 904 Opts.AddPath((*it)->getValue(), frontend::System, true, true); 905 906 // Add the paths for the various language specific isystem flags. 907 for (arg_iterator it = Args.filtered_begin(OPT_c_isystem), 908 ie = Args.filtered_end(); it != ie; ++it) 909 Opts.AddPath((*it)->getValue(), frontend::CSystem, false, true); 910 for (arg_iterator it = Args.filtered_begin(OPT_cxx_isystem), 911 ie = Args.filtered_end(); it != ie; ++it) 912 Opts.AddPath((*it)->getValue(), frontend::CXXSystem, false, true); 913 for (arg_iterator it = Args.filtered_begin(OPT_objc_isystem), 914 ie = Args.filtered_end(); it != ie; ++it) 915 Opts.AddPath((*it)->getValue(), frontend::ObjCSystem, false,true); 916 for (arg_iterator it = Args.filtered_begin(OPT_objcxx_isystem), 917 ie = Args.filtered_end(); it != ie; ++it) 918 Opts.AddPath((*it)->getValue(), frontend::ObjCXXSystem, false, true); 919 920 // Add the internal paths from a driver that detects standard include paths. 921 for (arg_iterator I = Args.filtered_begin(OPT_internal_isystem, 922 OPT_internal_externc_isystem), 923 E = Args.filtered_end(); 924 I != E; ++I) { 925 frontend::IncludeDirGroup Group = frontend::System; 926 if ((*I)->getOption().matches(OPT_internal_externc_isystem)) 927 Group = frontend::ExternCSystem; 928 Opts.AddPath((*I)->getValue(), Group, false, true); 929 } 930 931 // Add the path prefixes which are implicitly treated as being system headers. 932 for (arg_iterator I = Args.filtered_begin(OPT_isystem_prefix, 933 OPT_ino_system_prefix), 934 E = Args.filtered_end(); 935 I != E; ++I) 936 Opts.AddSystemHeaderPrefix((*I)->getValue(), 937 (*I)->getOption().matches(OPT_isystem_prefix)); 938 } 939 940 void CompilerInvocation::setLangDefaults(LangOptions &Opts, InputKind IK, 941 LangStandard::Kind LangStd) { 942 // Set some properties which depend solely on the input kind; it would be nice 943 // to move these to the language standard, and have the driver resolve the 944 // input kind + language standard. 945 if (IK == IK_Asm) { 946 Opts.AsmPreprocessor = 1; 947 } else if (IK == IK_ObjC || 948 IK == IK_ObjCXX || 949 IK == IK_PreprocessedObjC || 950 IK == IK_PreprocessedObjCXX) { 951 Opts.ObjC1 = Opts.ObjC2 = 1; 952 } 953 954 if (LangStd == LangStandard::lang_unspecified) { 955 // Based on the base language, pick one. 956 switch (IK) { 957 case IK_None: 958 case IK_AST: 959 case IK_LLVM_IR: 960 llvm_unreachable("Invalid input kind!"); 961 case IK_OpenCL: 962 LangStd = LangStandard::lang_opencl; 963 break; 964 case IK_CUDA: 965 LangStd = LangStandard::lang_cuda; 966 break; 967 case IK_Asm: 968 case IK_C: 969 case IK_PreprocessedC: 970 case IK_ObjC: 971 case IK_PreprocessedObjC: 972 LangStd = LangStandard::lang_gnu99; 973 break; 974 case IK_CXX: 975 case IK_PreprocessedCXX: 976 case IK_ObjCXX: 977 case IK_PreprocessedObjCXX: 978 LangStd = LangStandard::lang_gnucxx98; 979 break; 980 } 981 } 982 983 const LangStandard &Std = LangStandard::getLangStandardForKind(LangStd); 984 Opts.LineComment = Std.hasLineComments(); 985 Opts.C99 = Std.isC99(); 986 Opts.C11 = Std.isC11(); 987 Opts.CPlusPlus = Std.isCPlusPlus(); 988 Opts.CPlusPlus11 = Std.isCPlusPlus11(); 989 Opts.CPlusPlus1y = Std.isCPlusPlus1y(); 990 Opts.Digraphs = Std.hasDigraphs(); 991 Opts.GNUMode = Std.isGNUMode(); 992 Opts.GNUInline = !Std.isC99(); 993 Opts.HexFloats = Std.hasHexFloats(); 994 Opts.ImplicitInt = Std.hasImplicitInt(); 995 996 // Set OpenCL Version. 997 if (LangStd == LangStandard::lang_opencl) { 998 Opts.OpenCL = 1; 999 Opts.OpenCLVersion = 100; 1000 } 1001 else if (LangStd == LangStandard::lang_opencl11) { 1002 Opts.OpenCL = 1; 1003 Opts.OpenCLVersion = 110; 1004 } 1005 else if (LangStd == LangStandard::lang_opencl12) { 1006 Opts.OpenCL = 1; 1007 Opts.OpenCLVersion = 120; 1008 } 1009 1010 // OpenCL has some additional defaults. 1011 if (Opts.OpenCL) { 1012 Opts.AltiVec = 0; 1013 Opts.CXXOperatorNames = 1; 1014 Opts.LaxVectorConversions = 0; 1015 Opts.DefaultFPContract = 1; 1016 Opts.NativeHalfType = 1; 1017 } 1018 1019 if (LangStd == LangStandard::lang_cuda) 1020 Opts.CUDA = 1; 1021 1022 // OpenCL and C++ both have bool, true, false keywords. 1023 Opts.Bool = Opts.OpenCL || Opts.CPlusPlus; 1024 1025 // C++ has wchar_t keyword. 1026 Opts.WChar = Opts.CPlusPlus; 1027 1028 Opts.GNUKeywords = Opts.GNUMode; 1029 Opts.CXXOperatorNames = Opts.CPlusPlus; 1030 1031 // Mimicing gcc's behavior, trigraphs are only enabled if -trigraphs 1032 // is specified, or -std is set to a conforming mode. 1033 Opts.Trigraphs = !Opts.GNUMode; 1034 1035 Opts.DollarIdents = !Opts.AsmPreprocessor; 1036 } 1037 1038 /// Attempt to parse a visibility value out of the given argument. 1039 static Visibility parseVisibility(Arg *arg, ArgList &args, 1040 DiagnosticsEngine &diags) { 1041 StringRef value = arg->getValue(); 1042 if (value == "default") { 1043 return DefaultVisibility; 1044 } else if (value == "hidden") { 1045 return HiddenVisibility; 1046 } else if (value == "protected") { 1047 // FIXME: diagnose if target does not support protected visibility 1048 return ProtectedVisibility; 1049 } 1050 1051 diags.Report(diag::err_drv_invalid_value) 1052 << arg->getAsString(args) << value; 1053 return DefaultVisibility; 1054 } 1055 1056 static void ParseLangArgs(LangOptions &Opts, ArgList &Args, InputKind IK, 1057 DiagnosticsEngine &Diags) { 1058 // FIXME: Cleanup per-file based stuff. 1059 LangStandard::Kind LangStd = LangStandard::lang_unspecified; 1060 if (const Arg *A = Args.getLastArg(OPT_std_EQ)) { 1061 LangStd = llvm::StringSwitch<LangStandard::Kind>(A->getValue()) 1062 #define LANGSTANDARD(id, name, desc, features) \ 1063 .Case(name, LangStandard::lang_##id) 1064 #include "clang/Frontend/LangStandards.def" 1065 .Default(LangStandard::lang_unspecified); 1066 if (LangStd == LangStandard::lang_unspecified) 1067 Diags.Report(diag::err_drv_invalid_value) 1068 << A->getAsString(Args) << A->getValue(); 1069 else { 1070 // Valid standard, check to make sure language and standard are compatable. 1071 const LangStandard &Std = LangStandard::getLangStandardForKind(LangStd); 1072 switch (IK) { 1073 case IK_C: 1074 case IK_ObjC: 1075 case IK_PreprocessedC: 1076 case IK_PreprocessedObjC: 1077 if (!(Std.isC89() || Std.isC99())) 1078 Diags.Report(diag::err_drv_argument_not_allowed_with) 1079 << A->getAsString(Args) << "C/ObjC"; 1080 break; 1081 case IK_CXX: 1082 case IK_ObjCXX: 1083 case IK_PreprocessedCXX: 1084 case IK_PreprocessedObjCXX: 1085 if (!Std.isCPlusPlus()) 1086 Diags.Report(diag::err_drv_argument_not_allowed_with) 1087 << A->getAsString(Args) << "C++/ObjC++"; 1088 break; 1089 case IK_OpenCL: 1090 if (!Std.isC99()) 1091 Diags.Report(diag::err_drv_argument_not_allowed_with) 1092 << A->getAsString(Args) << "OpenCL"; 1093 break; 1094 case IK_CUDA: 1095 if (!Std.isCPlusPlus()) 1096 Diags.Report(diag::err_drv_argument_not_allowed_with) 1097 << A->getAsString(Args) << "CUDA"; 1098 break; 1099 default: 1100 break; 1101 } 1102 } 1103 } 1104 1105 // -cl-std only applies for OpenCL language standards. 1106 // Override the -std option in this case. 1107 if (const Arg *A = Args.getLastArg(OPT_cl_std_EQ)) { 1108 LangStandard::Kind OpenCLLangStd 1109 = llvm::StringSwitch<LangStandard::Kind>(A->getValue()) 1110 .Case("CL", LangStandard::lang_opencl) 1111 .Case("CL1.1", LangStandard::lang_opencl11) 1112 .Case("CL1.2", LangStandard::lang_opencl12) 1113 .Default(LangStandard::lang_unspecified); 1114 1115 if (OpenCLLangStd == LangStandard::lang_unspecified) { 1116 Diags.Report(diag::err_drv_invalid_value) 1117 << A->getAsString(Args) << A->getValue(); 1118 } 1119 else 1120 LangStd = OpenCLLangStd; 1121 } 1122 1123 CompilerInvocation::setLangDefaults(Opts, IK, LangStd); 1124 1125 // We abuse '-f[no-]gnu-keywords' to force overriding all GNU-extension 1126 // keywords. This behavior is provided by GCC's poorly named '-fasm' flag, 1127 // while a subset (the non-C++ GNU keywords) is provided by GCC's 1128 // '-fgnu-keywords'. Clang conflates the two for simplicity under the single 1129 // name, as it doesn't seem a useful distinction. 1130 Opts.GNUKeywords = Args.hasFlag(OPT_fgnu_keywords, OPT_fno_gnu_keywords, 1131 Opts.GNUKeywords); 1132 1133 if (Args.hasArg(OPT_fno_operator_names)) 1134 Opts.CXXOperatorNames = 0; 1135 1136 if (Opts.ObjC1) { 1137 if (Arg *arg = Args.getLastArg(OPT_fobjc_runtime_EQ)) { 1138 StringRef value = arg->getValue(); 1139 if (Opts.ObjCRuntime.tryParse(value)) 1140 Diags.Report(diag::err_drv_unknown_objc_runtime) << value; 1141 } 1142 1143 if (Args.hasArg(OPT_fobjc_gc_only)) 1144 Opts.setGC(LangOptions::GCOnly); 1145 else if (Args.hasArg(OPT_fobjc_gc)) 1146 Opts.setGC(LangOptions::HybridGC); 1147 else if (Args.hasArg(OPT_fobjc_arc)) { 1148 Opts.ObjCAutoRefCount = 1; 1149 if (!Opts.ObjCRuntime.allowsARC()) 1150 Diags.Report(diag::err_arc_unsupported_on_runtime); 1151 1152 // Only set ObjCARCWeak if ARC is enabled. 1153 if (Args.hasArg(OPT_fobjc_runtime_has_weak)) 1154 Opts.ObjCARCWeak = 1; 1155 else 1156 Opts.ObjCARCWeak = Opts.ObjCRuntime.allowsWeak(); 1157 } 1158 1159 if (Args.hasArg(OPT_fno_objc_infer_related_result_type)) 1160 Opts.ObjCInferRelatedResultType = 0; 1161 } 1162 1163 if (Args.hasArg(OPT_fgnu89_inline)) 1164 Opts.GNUInline = 1; 1165 1166 if (Args.hasArg(OPT_fapple_kext)) { 1167 if (!Opts.CPlusPlus) 1168 Diags.Report(diag::warn_c_kext); 1169 else 1170 Opts.AppleKext = 1; 1171 } 1172 1173 if (Args.hasArg(OPT_print_ivar_layout)) 1174 Opts.ObjCGCBitmapPrint = 1; 1175 if (Args.hasArg(OPT_fno_constant_cfstrings)) 1176 Opts.NoConstantCFStrings = 1; 1177 1178 if (Args.hasArg(OPT_faltivec)) 1179 Opts.AltiVec = 1; 1180 1181 if (Args.hasArg(OPT_pthread)) 1182 Opts.POSIXThreads = 1; 1183 1184 // The value-visibility mode defaults to "default". 1185 if (Arg *visOpt = Args.getLastArg(OPT_fvisibility)) { 1186 Opts.setValueVisibilityMode(parseVisibility(visOpt, Args, Diags)); 1187 } else { 1188 Opts.setValueVisibilityMode(DefaultVisibility); 1189 } 1190 1191 // The type-visibility mode defaults to the value-visibility mode. 1192 if (Arg *typeVisOpt = Args.getLastArg(OPT_ftype_visibility)) { 1193 Opts.setTypeVisibilityMode(parseVisibility(typeVisOpt, Args, Diags)); 1194 } else { 1195 Opts.setTypeVisibilityMode(Opts.getValueVisibilityMode()); 1196 } 1197 1198 if (Args.hasArg(OPT_fvisibility_inlines_hidden)) 1199 Opts.InlineVisibilityHidden = 1; 1200 1201 if (Args.hasArg(OPT_ftrapv)) { 1202 Opts.setSignedOverflowBehavior(LangOptions::SOB_Trapping); 1203 // Set the handler, if one is specified. 1204 Opts.OverflowHandler = 1205 Args.getLastArgValue(OPT_ftrapv_handler); 1206 } 1207 else if (Args.hasArg(OPT_fwrapv)) 1208 Opts.setSignedOverflowBehavior(LangOptions::SOB_Defined); 1209 1210 if (Args.hasArg(OPT_trigraphs)) 1211 Opts.Trigraphs = 1; 1212 1213 Opts.DollarIdents = Args.hasFlag(OPT_fdollars_in_identifiers, 1214 OPT_fno_dollars_in_identifiers, 1215 Opts.DollarIdents); 1216 Opts.PascalStrings = Args.hasArg(OPT_fpascal_strings); 1217 Opts.MicrosoftExt 1218 = Args.hasArg(OPT_fms_extensions) || Args.hasArg(OPT_fms_compatibility); 1219 Opts.MicrosoftMode = Args.hasArg(OPT_fms_compatibility); 1220 Opts.AsmBlocks = Args.hasArg(OPT_fasm_blocks) || Opts.MicrosoftExt; 1221 Opts.MSCVersion = Args.getLastArgIntValue(OPT_fmsc_version, 0, Diags); 1222 Opts.Borland = Args.hasArg(OPT_fborland_extensions); 1223 Opts.WritableStrings = Args.hasArg(OPT_fwritable_strings); 1224 Opts.ConstStrings = Args.hasFlag(OPT_fconst_strings, OPT_fno_const_strings, 1225 Opts.ConstStrings); 1226 if (Args.hasArg(OPT_fno_lax_vector_conversions)) 1227 Opts.LaxVectorConversions = 0; 1228 if (Args.hasArg(OPT_fno_threadsafe_statics)) 1229 Opts.ThreadsafeStatics = 0; 1230 Opts.Exceptions = Args.hasArg(OPT_fexceptions); 1231 Opts.ObjCExceptions = Args.hasArg(OPT_fobjc_exceptions); 1232 Opts.CXXExceptions = Args.hasArg(OPT_fcxx_exceptions); 1233 Opts.SjLjExceptions = Args.hasArg(OPT_fsjlj_exceptions); 1234 Opts.TraditionalCPP = Args.hasArg(OPT_traditional_cpp); 1235 1236 Opts.RTTI = !Args.hasArg(OPT_fno_rtti); 1237 Opts.Blocks = Args.hasArg(OPT_fblocks); 1238 Opts.BlocksRuntimeOptional = Args.hasArg(OPT_fblocks_runtime_optional); 1239 Opts.Modules = Args.hasArg(OPT_fmodules); 1240 Opts.CharIsSigned = !Args.hasArg(OPT_fno_signed_char); 1241 Opts.WChar = Opts.CPlusPlus && !Args.hasArg(OPT_fno_wchar); 1242 Opts.ShortWChar = Args.hasArg(OPT_fshort_wchar); 1243 Opts.ShortEnums = Args.hasArg(OPT_fshort_enums); 1244 Opts.Freestanding = Args.hasArg(OPT_ffreestanding); 1245 Opts.NoBuiltin = Args.hasArg(OPT_fno_builtin) || Opts.Freestanding; 1246 Opts.AssumeSaneOperatorNew = !Args.hasArg(OPT_fno_assume_sane_operator_new); 1247 Opts.HeinousExtensions = Args.hasArg(OPT_fheinous_gnu_extensions); 1248 Opts.AccessControl = !Args.hasArg(OPT_fno_access_control); 1249 Opts.ElideConstructors = !Args.hasArg(OPT_fno_elide_constructors); 1250 Opts.MathErrno = Args.hasArg(OPT_fmath_errno); 1251 Opts.InstantiationDepth = Args.getLastArgIntValue(OPT_ftemplate_depth, 256, 1252 Diags); 1253 Opts.ConstexprCallDepth = Args.getLastArgIntValue(OPT_fconstexpr_depth, 512, 1254 Diags); 1255 Opts.BracketDepth = Args.getLastArgIntValue(OPT_fbracket_depth, 256, Diags); 1256 Opts.DelayedTemplateParsing = Args.hasArg(OPT_fdelayed_template_parsing); 1257 Opts.NumLargeByValueCopy = Args.getLastArgIntValue(OPT_Wlarge_by_value_copy_EQ, 1258 0, Diags); 1259 Opts.MSBitfields = Args.hasArg(OPT_mms_bitfields); 1260 Opts.ObjCConstantStringClass = 1261 Args.getLastArgValue(OPT_fconstant_string_class); 1262 Opts.ObjCDefaultSynthProperties = 1263 Args.hasArg(OPT_fobjc_default_synthesize_properties); 1264 Opts.EncodeExtendedBlockSig = 1265 Args.hasArg(OPT_fencode_extended_block_signature); 1266 Opts.EmitAllDecls = Args.hasArg(OPT_femit_all_decls); 1267 Opts.PackStruct = Args.getLastArgIntValue(OPT_fpack_struct_EQ, 0, Diags); 1268 Opts.PICLevel = Args.getLastArgIntValue(OPT_pic_level, 0, Diags); 1269 Opts.PIELevel = Args.getLastArgIntValue(OPT_pie_level, 0, Diags); 1270 Opts.Static = Args.hasArg(OPT_static_define); 1271 Opts.DumpRecordLayoutsSimple = Args.hasArg(OPT_fdump_record_layouts_simple); 1272 Opts.DumpRecordLayouts = Opts.DumpRecordLayoutsSimple 1273 || Args.hasArg(OPT_fdump_record_layouts); 1274 Opts.DumpVTableLayouts = Args.hasArg(OPT_fdump_vtable_layouts); 1275 Opts.SpellChecking = !Args.hasArg(OPT_fno_spell_checking); 1276 Opts.NoBitFieldTypeAlign = Args.hasArg(OPT_fno_bitfield_type_align); 1277 Opts.SinglePrecisionConstants = Args.hasArg(OPT_cl_single_precision_constant); 1278 Opts.FastRelaxedMath = Args.hasArg(OPT_cl_fast_relaxed_math); 1279 Opts.MRTD = Args.hasArg(OPT_mrtd); 1280 Opts.HexagonQdsp6Compat = Args.hasArg(OPT_mqdsp6_compat); 1281 Opts.FakeAddressSpaceMap = Args.hasArg(OPT_ffake_address_space_map); 1282 Opts.ParseUnknownAnytype = Args.hasArg(OPT_funknown_anytype); 1283 Opts.DebuggerSupport = Args.hasArg(OPT_fdebugger_support); 1284 Opts.DebuggerCastResultToId = Args.hasArg(OPT_fdebugger_cast_result_to_id); 1285 Opts.DebuggerObjCLiteral = Args.hasArg(OPT_fdebugger_objc_literal); 1286 Opts.ApplePragmaPack = Args.hasArg(OPT_fapple_pragma_pack); 1287 Opts.CurrentModule = Args.getLastArgValue(OPT_fmodule_name); 1288 1289 // Check if -fopenmp is specified. 1290 Opts.OpenMP = Args.hasArg(OPT_fopenmp); 1291 1292 // Record whether the __DEPRECATED define was requested. 1293 Opts.Deprecated = Args.hasFlag(OPT_fdeprecated_macro, 1294 OPT_fno_deprecated_macro, 1295 Opts.Deprecated); 1296 1297 // FIXME: Eliminate this dependency. 1298 unsigned Opt = getOptimizationLevel(Args, IK, Diags), 1299 OptSize = getOptimizationLevelSize(Args); 1300 Opts.Optimize = Opt != 0; 1301 Opts.OptimizeSize = OptSize != 0; 1302 1303 // This is the __NO_INLINE__ define, which just depends on things like the 1304 // optimization level and -fno-inline, not actually whether the backend has 1305 // inlining enabled. 1306 Opts.NoInlineDefine = !Opt || Args.hasArg(OPT_fno_inline); 1307 1308 Opts.FastMath = Args.hasArg(OPT_ffast_math); 1309 Opts.FiniteMathOnly = Args.hasArg(OPT_ffinite_math_only); 1310 1311 Opts.RetainCommentsFromSystemHeaders = 1312 Args.hasArg(OPT_fretain_comments_from_system_headers); 1313 1314 unsigned SSP = Args.getLastArgIntValue(OPT_stack_protector, 0, Diags); 1315 switch (SSP) { 1316 default: 1317 Diags.Report(diag::err_drv_invalid_value) 1318 << Args.getLastArg(OPT_stack_protector)->getAsString(Args) << SSP; 1319 break; 1320 case 0: Opts.setStackProtector(LangOptions::SSPOff); break; 1321 case 1: Opts.setStackProtector(LangOptions::SSPOn); break; 1322 case 2: Opts.setStackProtector(LangOptions::SSPReq); break; 1323 } 1324 1325 // Parse -fsanitize= arguments. 1326 std::vector<std::string> Sanitizers = Args.getAllArgValues(OPT_fsanitize_EQ); 1327 for (unsigned I = 0, N = Sanitizers.size(); I != N; ++I) { 1328 // Since the Opts.Sanitize* values are bitfields, it's a little tricky to 1329 // efficiently map string values to them. Perform the mapping indirectly: 1330 // convert strings to enumerated values, then switch over the enum to set 1331 // the right bitfield value. 1332 enum Sanitizer { 1333 #define SANITIZER(NAME, ID) \ 1334 ID, 1335 #include "clang/Basic/Sanitizers.def" 1336 Unknown 1337 }; 1338 switch (llvm::StringSwitch<unsigned>(Sanitizers[I]) 1339 #define SANITIZER(NAME, ID) \ 1340 .Case(NAME, ID) 1341 #include "clang/Basic/Sanitizers.def" 1342 .Default(Unknown)) { 1343 #define SANITIZER(NAME, ID) \ 1344 case ID: \ 1345 Opts.Sanitize.ID = true; \ 1346 break; 1347 #include "clang/Basic/Sanitizers.def" 1348 1349 case Unknown: 1350 Diags.Report(diag::err_drv_invalid_value) 1351 << "-fsanitize=" << Sanitizers[I]; 1352 break; 1353 } 1354 } 1355 } 1356 1357 static void ParsePreprocessorArgs(PreprocessorOptions &Opts, ArgList &Args, 1358 FileManager &FileMgr, 1359 DiagnosticsEngine &Diags) { 1360 using namespace options; 1361 Opts.ImplicitPCHInclude = Args.getLastArgValue(OPT_include_pch); 1362 Opts.ImplicitPTHInclude = Args.getLastArgValue(OPT_include_pth); 1363 if (const Arg *A = Args.getLastArg(OPT_token_cache)) 1364 Opts.TokenCache = A->getValue(); 1365 else 1366 Opts.TokenCache = Opts.ImplicitPTHInclude; 1367 Opts.UsePredefines = !Args.hasArg(OPT_undef); 1368 Opts.DetailedRecord = Args.hasArg(OPT_detailed_preprocessing_record); 1369 Opts.DisablePCHValidation = Args.hasArg(OPT_fno_validate_pch); 1370 1371 Opts.DumpDeserializedPCHDecls = Args.hasArg(OPT_dump_deserialized_pch_decls); 1372 for (arg_iterator it = Args.filtered_begin(OPT_error_on_deserialized_pch_decl), 1373 ie = Args.filtered_end(); it != ie; ++it) { 1374 const Arg *A = *it; 1375 Opts.DeserializedPCHDeclsToErrorOn.insert(A->getValue()); 1376 } 1377 1378 if (const Arg *A = Args.getLastArg(OPT_preamble_bytes_EQ)) { 1379 StringRef Value(A->getValue()); 1380 size_t Comma = Value.find(','); 1381 unsigned Bytes = 0; 1382 unsigned EndOfLine = 0; 1383 1384 if (Comma == StringRef::npos || 1385 Value.substr(0, Comma).getAsInteger(10, Bytes) || 1386 Value.substr(Comma + 1).getAsInteger(10, EndOfLine)) 1387 Diags.Report(diag::err_drv_preamble_format); 1388 else { 1389 Opts.PrecompiledPreambleBytes.first = Bytes; 1390 Opts.PrecompiledPreambleBytes.second = (EndOfLine != 0); 1391 } 1392 } 1393 1394 // Add macros from the command line. 1395 for (arg_iterator it = Args.filtered_begin(OPT_D, OPT_U), 1396 ie = Args.filtered_end(); it != ie; ++it) { 1397 if ((*it)->getOption().matches(OPT_D)) 1398 Opts.addMacroDef((*it)->getValue()); 1399 else 1400 Opts.addMacroUndef((*it)->getValue()); 1401 } 1402 1403 Opts.MacroIncludes = Args.getAllArgValues(OPT_imacros); 1404 1405 // Add the ordered list of -includes. 1406 for (arg_iterator it = Args.filtered_begin(OPT_include), 1407 ie = Args.filtered_end(); it != ie; ++it) { 1408 const Arg *A = *it; 1409 Opts.Includes.push_back(A->getValue()); 1410 } 1411 1412 for (arg_iterator it = Args.filtered_begin(OPT_chain_include), 1413 ie = Args.filtered_end(); it != ie; ++it) { 1414 const Arg *A = *it; 1415 Opts.ChainedIncludes.push_back(A->getValue()); 1416 } 1417 1418 // Include 'altivec.h' if -faltivec option present 1419 if (Args.hasArg(OPT_faltivec)) 1420 Opts.Includes.push_back("altivec.h"); 1421 1422 for (arg_iterator it = Args.filtered_begin(OPT_remap_file), 1423 ie = Args.filtered_end(); it != ie; ++it) { 1424 const Arg *A = *it; 1425 std::pair<StringRef,StringRef> Split = 1426 StringRef(A->getValue()).split(';'); 1427 1428 if (Split.second.empty()) { 1429 Diags.Report(diag::err_drv_invalid_remap_file) << A->getAsString(Args); 1430 continue; 1431 } 1432 1433 Opts.addRemappedFile(Split.first, Split.second); 1434 } 1435 1436 if (Arg *A = Args.getLastArg(OPT_fobjc_arc_cxxlib_EQ)) { 1437 StringRef Name = A->getValue(); 1438 unsigned Library = llvm::StringSwitch<unsigned>(Name) 1439 .Case("libc++", ARCXX_libcxx) 1440 .Case("libstdc++", ARCXX_libstdcxx) 1441 .Case("none", ARCXX_nolib) 1442 .Default(~0U); 1443 if (Library == ~0U) 1444 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Name; 1445 else 1446 Opts.ObjCXXARCStandardLibrary = (ObjCXXARCStandardLibraryKind)Library; 1447 } 1448 } 1449 1450 static void ParsePreprocessorOutputArgs(PreprocessorOutputOptions &Opts, 1451 ArgList &Args, 1452 frontend::ActionKind Action) { 1453 using namespace options; 1454 1455 switch (Action) { 1456 case frontend::ASTDeclList: 1457 case frontend::ASTDump: 1458 case frontend::ASTDumpXML: 1459 case frontend::ASTPrint: 1460 case frontend::ASTView: 1461 case frontend::EmitAssembly: 1462 case frontend::EmitBC: 1463 case frontend::EmitHTML: 1464 case frontend::EmitLLVM: 1465 case frontend::EmitLLVMOnly: 1466 case frontend::EmitCodeGenOnly: 1467 case frontend::EmitObj: 1468 case frontend::FixIt: 1469 case frontend::GenerateModule: 1470 case frontend::GeneratePCH: 1471 case frontend::GeneratePTH: 1472 case frontend::ParseSyntaxOnly: 1473 case frontend::ModuleFileInfo: 1474 case frontend::PluginAction: 1475 case frontend::PrintDeclContext: 1476 case frontend::RewriteObjC: 1477 case frontend::RewriteTest: 1478 case frontend::RunAnalysis: 1479 case frontend::MigrateSource: 1480 Opts.ShowCPP = 0; 1481 break; 1482 1483 case frontend::DumpRawTokens: 1484 case frontend::DumpTokens: 1485 case frontend::InitOnly: 1486 case frontend::PrintPreamble: 1487 case frontend::PrintPreprocessedInput: 1488 case frontend::RewriteMacros: 1489 case frontend::RunPreprocessorOnly: 1490 Opts.ShowCPP = !Args.hasArg(OPT_dM); 1491 break; 1492 } 1493 1494 Opts.ShowComments = Args.hasArg(OPT_C); 1495 Opts.ShowLineMarkers = !Args.hasArg(OPT_P); 1496 Opts.ShowMacroComments = Args.hasArg(OPT_CC); 1497 Opts.ShowMacros = Args.hasArg(OPT_dM) || Args.hasArg(OPT_dD); 1498 Opts.RewriteIncludes = Args.hasArg(OPT_frewrite_includes); 1499 } 1500 1501 static void ParseTargetArgs(TargetOptions &Opts, ArgList &Args) { 1502 using namespace options; 1503 Opts.ABI = Args.getLastArgValue(OPT_target_abi); 1504 Opts.CXXABI = Args.getLastArgValue(OPT_cxx_abi); 1505 Opts.CPU = Args.getLastArgValue(OPT_target_cpu); 1506 Opts.FeaturesAsWritten = Args.getAllArgValues(OPT_target_feature); 1507 Opts.LinkerVersion = Args.getLastArgValue(OPT_target_linker_version); 1508 Opts.Triple = llvm::Triple::normalize(Args.getLastArgValue(OPT_triple)); 1509 1510 // Use the default target triple if unspecified. 1511 if (Opts.Triple.empty()) 1512 Opts.Triple = llvm::sys::getDefaultTargetTriple(); 1513 } 1514 1515 // 1516 1517 bool CompilerInvocation::CreateFromArgs(CompilerInvocation &Res, 1518 const char *const *ArgBegin, 1519 const char *const *ArgEnd, 1520 DiagnosticsEngine &Diags) { 1521 bool Success = true; 1522 1523 // Parse the arguments. 1524 OwningPtr<OptTable> Opts(createDriverOptTable()); 1525 unsigned MissingArgIndex, MissingArgCount; 1526 OwningPtr<InputArgList> Args( 1527 Opts->ParseArgs(ArgBegin, ArgEnd,MissingArgIndex, MissingArgCount)); 1528 1529 // Check for missing argument error. 1530 if (MissingArgCount) { 1531 Diags.Report(diag::err_drv_missing_argument) 1532 << Args->getArgString(MissingArgIndex) << MissingArgCount; 1533 Success = false; 1534 } 1535 1536 // Issue errors on unknown arguments. 1537 for (arg_iterator it = Args->filtered_begin(OPT_UNKNOWN), 1538 ie = Args->filtered_end(); it != ie; ++it) { 1539 Diags.Report(diag::err_drv_unknown_argument) << (*it)->getAsString(*Args); 1540 Success = false; 1541 } 1542 1543 // Issue errors on arguments that are not valid for CC1. 1544 for (ArgList::iterator I = Args->begin(), E = Args->end(); 1545 I != E; ++I) { 1546 if (!(*I)->getOption().hasFlag(options::CC1Option)) { 1547 Diags.Report(diag::err_drv_unknown_argument) << (*I)->getAsString(*Args); 1548 Success = false; 1549 } 1550 } 1551 1552 Success = ParseAnalyzerArgs(*Res.getAnalyzerOpts(), *Args, Diags) && Success; 1553 Success = ParseMigratorArgs(Res.getMigratorOpts(), *Args) && Success; 1554 ParseDependencyOutputArgs(Res.getDependencyOutputOpts(), *Args); 1555 Success = ParseDiagnosticArgs(Res.getDiagnosticOpts(), *Args, &Diags) 1556 && Success; 1557 ParseCommentArgs(Res.getLangOpts()->CommentOpts, *Args); 1558 ParseFileSystemArgs(Res.getFileSystemOpts(), *Args); 1559 // FIXME: We shouldn't have to pass the DashX option around here 1560 InputKind DashX = ParseFrontendArgs(Res.getFrontendOpts(), *Args, Diags); 1561 Success = ParseCodeGenArgs(Res.getCodeGenOpts(), *Args, DashX, Diags) 1562 && Success; 1563 ParseHeaderSearchArgs(Res.getHeaderSearchOpts(), *Args); 1564 if (DashX != IK_AST && DashX != IK_LLVM_IR) { 1565 ParseLangArgs(*Res.getLangOpts(), *Args, DashX, Diags); 1566 if (Res.getFrontendOpts().ProgramAction == frontend::RewriteObjC) 1567 Res.getLangOpts()->ObjCExceptions = 1; 1568 } 1569 // FIXME: ParsePreprocessorArgs uses the FileManager to read the contents of 1570 // PCH file and find the original header name. Remove the need to do that in 1571 // ParsePreprocessorArgs and remove the FileManager 1572 // parameters from the function and the "FileManager.h" #include. 1573 FileManager FileMgr(Res.getFileSystemOpts()); 1574 ParsePreprocessorArgs(Res.getPreprocessorOpts(), *Args, FileMgr, Diags); 1575 ParsePreprocessorOutputArgs(Res.getPreprocessorOutputOpts(), *Args, 1576 Res.getFrontendOpts().ProgramAction); 1577 ParseTargetArgs(Res.getTargetOpts(), *Args); 1578 1579 return Success; 1580 } 1581 1582 namespace { 1583 1584 class ModuleSignature { 1585 SmallVector<uint64_t, 16> Data; 1586 unsigned CurBit; 1587 uint64_t CurValue; 1588 1589 public: 1590 ModuleSignature() : CurBit(0), CurValue(0) { } 1591 1592 void add(uint64_t Value, unsigned Bits); 1593 void add(StringRef Value); 1594 void flush(); 1595 1596 llvm::APInt getAsInteger() const; 1597 }; 1598 } 1599 1600 void ModuleSignature::add(uint64_t Value, unsigned int NumBits) { 1601 CurValue |= Value << CurBit; 1602 if (CurBit + NumBits < 64) { 1603 CurBit += NumBits; 1604 return; 1605 } 1606 1607 // Add the current word. 1608 Data.push_back(CurValue); 1609 1610 if (CurBit) 1611 CurValue = Value >> (64-CurBit); 1612 else 1613 CurValue = 0; 1614 CurBit = (CurBit+NumBits) & 63; 1615 } 1616 1617 void ModuleSignature::flush() { 1618 if (CurBit == 0) 1619 return; 1620 1621 Data.push_back(CurValue); 1622 CurBit = 0; 1623 CurValue = 0; 1624 } 1625 1626 void ModuleSignature::add(StringRef Value) { 1627 for (StringRef::iterator I = Value.begin(), IEnd = Value.end(); I != IEnd;++I) 1628 add(*I, 8); 1629 } 1630 1631 llvm::APInt ModuleSignature::getAsInteger() const { 1632 return llvm::APInt(Data.size() * 64, Data); 1633 } 1634 1635 std::string CompilerInvocation::getModuleHash() const { 1636 // Note: For QoI reasons, the things we use as a hash here should all be 1637 // dumped via the -module-info flag. 1638 using llvm::hash_code; 1639 using llvm::hash_value; 1640 using llvm::hash_combine; 1641 1642 // Start the signature with the compiler version. 1643 // FIXME: We'd rather use something more cryptographically sound than 1644 // CityHash, but this will do for now. 1645 hash_code code = hash_value(getClangFullRepositoryVersion()); 1646 1647 // Extend the signature with the language options 1648 #define LANGOPT(Name, Bits, Default, Description) \ 1649 code = hash_combine(code, LangOpts->Name); 1650 #define ENUM_LANGOPT(Name, Type, Bits, Default, Description) \ 1651 code = hash_combine(code, static_cast<unsigned>(LangOpts->get##Name())); 1652 #define BENIGN_LANGOPT(Name, Bits, Default, Description) 1653 #define BENIGN_ENUM_LANGOPT(Name, Type, Bits, Default, Description) 1654 #include "clang/Basic/LangOptions.def" 1655 1656 // Extend the signature with the target options. 1657 code = hash_combine(code, TargetOpts->Triple, TargetOpts->CPU, 1658 TargetOpts->ABI, TargetOpts->CXXABI, 1659 TargetOpts->LinkerVersion); 1660 for (unsigned i = 0, n = TargetOpts->FeaturesAsWritten.size(); i != n; ++i) 1661 code = hash_combine(code, TargetOpts->FeaturesAsWritten[i]); 1662 1663 // Extend the signature with preprocessor options. 1664 const PreprocessorOptions &ppOpts = getPreprocessorOpts(); 1665 const HeaderSearchOptions &hsOpts = getHeaderSearchOpts(); 1666 code = hash_combine(code, ppOpts.UsePredefines, ppOpts.DetailedRecord); 1667 1668 std::vector<StringRef> MacroDefs; 1669 for (std::vector<std::pair<std::string, bool/*isUndef*/> >::const_iterator 1670 I = getPreprocessorOpts().Macros.begin(), 1671 IEnd = getPreprocessorOpts().Macros.end(); 1672 I != IEnd; ++I) { 1673 // If we're supposed to ignore this macro for the purposes of modules, 1674 // don't put it into the hash. 1675 if (!hsOpts.ModulesIgnoreMacros.empty()) { 1676 // Check whether we're ignoring this macro. 1677 StringRef MacroDef = I->first; 1678 if (hsOpts.ModulesIgnoreMacros.count(MacroDef.split('=').first)) 1679 continue; 1680 } 1681 1682 code = hash_combine(code, I->first, I->second); 1683 } 1684 1685 // Extend the signature with the sysroot. 1686 code = hash_combine(code, hsOpts.Sysroot, hsOpts.UseBuiltinIncludes, 1687 hsOpts.UseStandardSystemIncludes, 1688 hsOpts.UseStandardCXXIncludes, 1689 hsOpts.UseLibcxx); 1690 1691 // Darwin-specific hack: if we have a sysroot, use the contents of 1692 // $sysroot/System/Library/CoreServices/SystemVersion.plist 1693 // as part of the module hash. 1694 if (!hsOpts.Sysroot.empty()) { 1695 llvm::OwningPtr<llvm::MemoryBuffer> buffer; 1696 SmallString<128> systemVersionFile; 1697 systemVersionFile += hsOpts.Sysroot; 1698 llvm::sys::path::append(systemVersionFile, "System"); 1699 llvm::sys::path::append(systemVersionFile, "Library"); 1700 llvm::sys::path::append(systemVersionFile, "CoreServices"); 1701 llvm::sys::path::append(systemVersionFile, "SystemVersion.plist"); 1702 if (!llvm::MemoryBuffer::getFile(systemVersionFile, buffer)) { 1703 code = hash_combine(code, buffer.get()->getBuffer()); 1704 } 1705 } 1706 1707 return llvm::APInt(64, code).toString(36, /*Signed=*/false); 1708 } 1709