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/DriverDiagnostic.h" 15 #include "clang/Driver/Options.h" 16 #include "clang/Driver/Util.h" 17 #include "clang/Frontend/LangStandard.h" 18 #include "clang/Frontend/Utils.h" 19 #include "clang/Lex/HeaderSearchOptions.h" 20 #include "clang/Serialization/ASTReader.h" 21 #include "llvm/ADT/Hashing.h" 22 #include "llvm/ADT/OwningPtr.h" 23 #include "llvm/ADT/SmallVector.h" 24 #include "llvm/ADT/StringExtras.h" 25 #include "llvm/ADT/StringSwitch.h" 26 #include "llvm/ADT/Triple.h" 27 #include "llvm/Option/Arg.h" 28 #include "llvm/Option/ArgList.h" 29 #include "llvm/Option/OptTable.h" 30 #include "llvm/Option/Option.h" 31 #include "llvm/Support/ErrorHandling.h" 32 #include "llvm/Support/Host.h" 33 #include "llvm/Support/Path.h" 34 #include "llvm/Support/PathV1.h" 35 #include "llvm/Support/system_error.h" 36 #include <sys/stat.h> 37 using namespace clang; 38 39 //===----------------------------------------------------------------------===// 40 // Initialization. 41 //===----------------------------------------------------------------------===// 42 43 CompilerInvocationBase::CompilerInvocationBase() 44 : LangOpts(new LangOptions()), TargetOpts(new TargetOptions()), 45 DiagnosticOpts(new DiagnosticOptions()), 46 HeaderSearchOpts(new HeaderSearchOptions()), 47 PreprocessorOpts(new PreprocessorOptions()) {} 48 49 CompilerInvocationBase::CompilerInvocationBase(const CompilerInvocationBase &X) 50 : RefCountedBase<CompilerInvocation>(), 51 LangOpts(new LangOptions(*X.getLangOpts())), 52 TargetOpts(new TargetOptions(X.getTargetOpts())), 53 DiagnosticOpts(new DiagnosticOptions(X.getDiagnosticOpts())), 54 HeaderSearchOpts(new HeaderSearchOptions(X.getHeaderSearchOpts())), 55 PreprocessorOpts(new PreprocessorOptions(X.getPreprocessorOpts())) {} 56 57 //===----------------------------------------------------------------------===// 58 // Deserialization (from args) 59 //===----------------------------------------------------------------------===// 60 61 using namespace clang::driver; 62 using namespace clang::driver::options; 63 using namespace llvm::opt; 64 65 // 66 67 static unsigned getOptimizationLevel(ArgList &Args, InputKind IK, 68 DiagnosticsEngine &Diags) { 69 unsigned DefaultOpt = 0; 70 if (IK == IK_OpenCL && !Args.hasArg(OPT_cl_opt_disable)) 71 DefaultOpt = 2; 72 73 if (Arg *A = Args.getLastArg(options::OPT_O_Group)) { 74 if (A->getOption().matches(options::OPT_O0)) 75 return 0; 76 77 if (A->getOption().matches(options::OPT_Ofast)) 78 return 3; 79 80 assert (A->getOption().matches(options::OPT_O)); 81 82 StringRef S(A->getValue()); 83 if (S == "s" || S == "z" || S.empty()) 84 return 2; 85 86 return getLastArgIntValue(Args, OPT_O, DefaultOpt, Diags); 87 } 88 89 return DefaultOpt; 90 } 91 92 static unsigned getOptimizationLevelSize(ArgList &Args) { 93 if (Arg *A = Args.getLastArg(options::OPT_O_Group)) { 94 if (A->getOption().matches(options::OPT_O)) { 95 switch (A->getValue()[0]) { 96 default: 97 return 0; 98 case 's': 99 return 1; 100 case 'z': 101 return 2; 102 } 103 } 104 } 105 return 0; 106 } 107 108 static void addWarningArgs(ArgList &Args, std::vector<std::string> &Warnings) { 109 for (arg_iterator I = Args.filtered_begin(OPT_W_Group), 110 E = Args.filtered_end(); I != E; ++I) { 111 Arg *A = *I; 112 // If the argument is a pure flag, add its name (minus the "W" at the beginning) 113 // to the warning list. Else, add its value (for the OPT_W case). 114 if (A->getOption().getKind() == Option::FlagClass) { 115 Warnings.push_back(A->getOption().getName().substr(1)); 116 } else { 117 for (unsigned Idx = 0, End = A->getNumValues(); 118 Idx < End; ++Idx) { 119 StringRef V = A->getValue(Idx); 120 // "-Wl," and such are not warning options. 121 // FIXME: Should be handled by putting these in separate flags. 122 if (V.startswith("l,") || V.startswith("a,") || V.startswith("p,")) 123 continue; 124 125 Warnings.push_back(V); 126 } 127 } 128 } 129 } 130 131 static bool ParseAnalyzerArgs(AnalyzerOptions &Opts, ArgList &Args, 132 DiagnosticsEngine &Diags) { 133 using namespace options; 134 bool Success = true; 135 if (Arg *A = Args.getLastArg(OPT_analyzer_store)) { 136 StringRef Name = A->getValue(); 137 AnalysisStores Value = llvm::StringSwitch<AnalysisStores>(Name) 138 #define ANALYSIS_STORE(NAME, CMDFLAG, DESC, CREATFN) \ 139 .Case(CMDFLAG, NAME##Model) 140 #include "clang/StaticAnalyzer/Core/Analyses.def" 141 .Default(NumStores); 142 if (Value == NumStores) { 143 Diags.Report(diag::err_drv_invalid_value) 144 << A->getAsString(Args) << Name; 145 Success = false; 146 } else { 147 Opts.AnalysisStoreOpt = Value; 148 } 149 } 150 151 if (Arg *A = Args.getLastArg(OPT_analyzer_constraints)) { 152 StringRef Name = A->getValue(); 153 AnalysisConstraints Value = llvm::StringSwitch<AnalysisConstraints>(Name) 154 #define ANALYSIS_CONSTRAINTS(NAME, CMDFLAG, DESC, CREATFN) \ 155 .Case(CMDFLAG, NAME##Model) 156 #include "clang/StaticAnalyzer/Core/Analyses.def" 157 .Default(NumConstraints); 158 if (Value == NumConstraints) { 159 Diags.Report(diag::err_drv_invalid_value) 160 << A->getAsString(Args) << Name; 161 Success = false; 162 } else { 163 Opts.AnalysisConstraintsOpt = Value; 164 } 165 } 166 167 if (Arg *A = Args.getLastArg(OPT_analyzer_output)) { 168 StringRef Name = A->getValue(); 169 AnalysisDiagClients Value = llvm::StringSwitch<AnalysisDiagClients>(Name) 170 #define ANALYSIS_DIAGNOSTICS(NAME, CMDFLAG, DESC, CREATFN, AUTOCREAT) \ 171 .Case(CMDFLAG, PD_##NAME) 172 #include "clang/StaticAnalyzer/Core/Analyses.def" 173 .Default(NUM_ANALYSIS_DIAG_CLIENTS); 174 if (Value == NUM_ANALYSIS_DIAG_CLIENTS) { 175 Diags.Report(diag::err_drv_invalid_value) 176 << A->getAsString(Args) << Name; 177 Success = false; 178 } else { 179 Opts.AnalysisDiagOpt = Value; 180 } 181 } 182 183 if (Arg *A = Args.getLastArg(OPT_analyzer_purge)) { 184 StringRef Name = A->getValue(); 185 AnalysisPurgeMode Value = llvm::StringSwitch<AnalysisPurgeMode>(Name) 186 #define ANALYSIS_PURGE(NAME, CMDFLAG, DESC) \ 187 .Case(CMDFLAG, NAME) 188 #include "clang/StaticAnalyzer/Core/Analyses.def" 189 .Default(NumPurgeModes); 190 if (Value == NumPurgeModes) { 191 Diags.Report(diag::err_drv_invalid_value) 192 << A->getAsString(Args) << Name; 193 Success = false; 194 } else { 195 Opts.AnalysisPurgeOpt = Value; 196 } 197 } 198 199 if (Arg *A = Args.getLastArg(OPT_analyzer_inlining_mode)) { 200 StringRef Name = A->getValue(); 201 AnalysisInliningMode Value = llvm::StringSwitch<AnalysisInliningMode>(Name) 202 #define ANALYSIS_INLINING_MODE(NAME, CMDFLAG, DESC) \ 203 .Case(CMDFLAG, NAME) 204 #include "clang/StaticAnalyzer/Core/Analyses.def" 205 .Default(NumInliningModes); 206 if (Value == NumInliningModes) { 207 Diags.Report(diag::err_drv_invalid_value) 208 << A->getAsString(Args) << Name; 209 Success = false; 210 } else { 211 Opts.InliningMode = Value; 212 } 213 } 214 215 Opts.ShowCheckerHelp = Args.hasArg(OPT_analyzer_checker_help); 216 Opts.visualizeExplodedGraphWithGraphViz = 217 Args.hasArg(OPT_analyzer_viz_egraph_graphviz); 218 Opts.visualizeExplodedGraphWithUbiGraph = 219 Args.hasArg(OPT_analyzer_viz_egraph_ubigraph); 220 Opts.NoRetryExhausted = Args.hasArg(OPT_analyzer_disable_retry_exhausted); 221 Opts.AnalyzeAll = Args.hasArg(OPT_analyzer_opt_analyze_headers); 222 Opts.AnalyzerDisplayProgress = Args.hasArg(OPT_analyzer_display_progress); 223 Opts.AnalyzeNestedBlocks = 224 Args.hasArg(OPT_analyzer_opt_analyze_nested_blocks); 225 Opts.eagerlyAssumeBinOpBifurcation = Args.hasArg(OPT_analyzer_eagerly_assume); 226 Opts.AnalyzeSpecificFunction = Args.getLastArgValue(OPT_analyze_function); 227 Opts.UnoptimizedCFG = Args.hasArg(OPT_analysis_UnoptimizedCFG); 228 Opts.TrimGraph = Args.hasArg(OPT_trim_egraph); 229 Opts.maxBlockVisitOnPath = 230 getLastArgIntValue(Args, OPT_analyzer_max_loop, 4, Diags); 231 Opts.PrintStats = Args.hasArg(OPT_analyzer_stats); 232 Opts.InlineMaxStackDepth = 233 getLastArgIntValue(Args, OPT_analyzer_inline_max_stack_depth, 234 Opts.InlineMaxStackDepth, Diags); 235 236 Opts.CheckersControlList.clear(); 237 for (arg_iterator it = Args.filtered_begin(OPT_analyzer_checker, 238 OPT_analyzer_disable_checker), 239 ie = Args.filtered_end(); it != ie; ++it) { 240 const Arg *A = *it; 241 A->claim(); 242 bool enable = (A->getOption().getID() == OPT_analyzer_checker); 243 // We can have a list of comma separated checker names, e.g: 244 // '-analyzer-checker=cocoa,unix' 245 StringRef checkerList = A->getValue(); 246 SmallVector<StringRef, 4> checkers; 247 checkerList.split(checkers, ","); 248 for (unsigned i = 0, e = checkers.size(); i != e; ++i) 249 Opts.CheckersControlList.push_back(std::make_pair(checkers[i], enable)); 250 } 251 252 // Go through the analyzer configuration options. 253 for (arg_iterator it = Args.filtered_begin(OPT_analyzer_config), 254 ie = Args.filtered_end(); it != ie; ++it) { 255 const Arg *A = *it; 256 A->claim(); 257 // We can have a list of comma separated config names, e.g: 258 // '-analyzer-config key1=val1,key2=val2' 259 StringRef configList = A->getValue(); 260 SmallVector<StringRef, 4> configVals; 261 configList.split(configVals, ","); 262 for (unsigned i = 0, e = configVals.size(); i != e; ++i) { 263 StringRef key, val; 264 llvm::tie(key, val) = configVals[i].split("="); 265 if (val.empty()) { 266 Diags.Report(SourceLocation(), 267 diag::err_analyzer_config_no_value) << configVals[i]; 268 Success = false; 269 break; 270 } 271 if (val.find('=') != StringRef::npos) { 272 Diags.Report(SourceLocation(), 273 diag::err_analyzer_config_multiple_values) 274 << configVals[i]; 275 Success = false; 276 break; 277 } 278 Opts.Config[key] = val; 279 } 280 } 281 282 return Success; 283 } 284 285 static bool ParseMigratorArgs(MigratorOptions &Opts, ArgList &Args) { 286 Opts.NoNSAllocReallocError = Args.hasArg(OPT_migrator_no_nsalloc_error); 287 Opts.NoFinalizeRemoval = Args.hasArg(OPT_migrator_no_finalize_removal); 288 return true; 289 } 290 291 static void ParseCommentArgs(CommentOptions &Opts, ArgList &Args) { 292 Opts.BlockCommandNames = Args.getAllArgValues(OPT_fcomment_block_commands); 293 Opts.ParseAllComments = Args.hasArg(OPT_fparse_all_comments); 294 } 295 296 static bool ParseCodeGenArgs(CodeGenOptions &Opts, ArgList &Args, InputKind IK, 297 DiagnosticsEngine &Diags) { 298 using namespace options; 299 bool Success = true; 300 301 unsigned OptLevel = getOptimizationLevel(Args, IK, Diags); 302 if (OptLevel > 3) { 303 Diags.Report(diag::err_drv_invalid_value) 304 << Args.getLastArg(OPT_O)->getAsString(Args) << OptLevel; 305 OptLevel = 3; 306 Success = false; 307 } 308 Opts.OptimizationLevel = OptLevel; 309 310 // We must always run at least the always inlining pass. 311 Opts.setInlining( 312 (Opts.OptimizationLevel > 1) ? CodeGenOptions::NormalInlining 313 : CodeGenOptions::OnlyAlwaysInlining); 314 // -fno-inline-functions overrides OptimizationLevel > 1. 315 Opts.NoInline = Args.hasArg(OPT_fno_inline); 316 Opts.setInlining(Args.hasArg(OPT_fno_inline_functions) ? 317 CodeGenOptions::OnlyAlwaysInlining : Opts.getInlining()); 318 319 if (Args.hasArg(OPT_gline_tables_only)) { 320 Opts.setDebugInfo(CodeGenOptions::DebugLineTablesOnly); 321 } else if (Args.hasArg(OPT_g_Flag)) { 322 if (Args.hasFlag(OPT_flimit_debug_info, OPT_fno_limit_debug_info, true)) 323 Opts.setDebugInfo(CodeGenOptions::LimitedDebugInfo); 324 else 325 Opts.setDebugInfo(CodeGenOptions::FullDebugInfo); 326 } 327 Opts.DebugColumnInfo = Args.hasArg(OPT_dwarf_column_info); 328 Opts.SplitDwarfFile = Args.getLastArgValue(OPT_split_dwarf_file); 329 330 Opts.DisableLLVMOpts = Args.hasArg(OPT_disable_llvm_optzns); 331 Opts.DisableRedZone = Args.hasArg(OPT_disable_red_zone); 332 Opts.ForbidGuardVariables = Args.hasArg(OPT_fforbid_guard_variables); 333 Opts.UseRegisterSizedBitfieldAccess = Args.hasArg( 334 OPT_fuse_register_sized_bitfield_access); 335 Opts.RelaxedAliasing = Args.hasArg(OPT_relaxed_aliasing); 336 Opts.StructPathTBAA = Args.hasArg(OPT_struct_path_tbaa); 337 Opts.DwarfDebugFlags = Args.getLastArgValue(OPT_dwarf_debug_flags); 338 Opts.MergeAllConstants = !Args.hasArg(OPT_fno_merge_all_constants); 339 Opts.NoCommon = Args.hasArg(OPT_fno_common); 340 Opts.NoImplicitFloat = Args.hasArg(OPT_no_implicit_float); 341 Opts.OptimizeSize = getOptimizationLevelSize(Args); 342 Opts.SimplifyLibCalls = !(Args.hasArg(OPT_fno_builtin) || 343 Args.hasArg(OPT_ffreestanding)); 344 Opts.UnrollLoops = Args.hasArg(OPT_funroll_loops) || 345 (Opts.OptimizationLevel > 1 && !Opts.OptimizeSize); 346 347 Opts.Autolink = !Args.hasArg(OPT_fno_autolink); 348 Opts.AsmVerbose = Args.hasArg(OPT_masm_verbose); 349 Opts.ObjCAutoRefCountExceptions = Args.hasArg(OPT_fobjc_arc_exceptions); 350 Opts.CUDAIsDevice = Args.hasArg(OPT_fcuda_is_device); 351 Opts.CXAAtExit = !Args.hasArg(OPT_fno_use_cxa_atexit); 352 Opts.CXXCtorDtorAliases = Args.hasArg(OPT_mconstructor_aliases); 353 Opts.CodeModel = Args.getLastArgValue(OPT_mcode_model); 354 Opts.DebugPass = Args.getLastArgValue(OPT_mdebug_pass); 355 Opts.DisableFPElim = Args.hasArg(OPT_mdisable_fp_elim); 356 Opts.DisableTailCalls = Args.hasArg(OPT_mdisable_tail_calls); 357 Opts.FloatABI = Args.getLastArgValue(OPT_mfloat_abi); 358 Opts.HiddenWeakVTables = Args.hasArg(OPT_fhidden_weak_vtables); 359 Opts.LessPreciseFPMAD = Args.hasArg(OPT_cl_mad_enable); 360 Opts.LimitFloatPrecision = Args.getLastArgValue(OPT_mlimit_float_precision); 361 Opts.NoInfsFPMath = (Args.hasArg(OPT_menable_no_infinities) || 362 Args.hasArg(OPT_cl_finite_math_only)|| 363 Args.hasArg(OPT_cl_fast_relaxed_math)); 364 Opts.NoNaNsFPMath = (Args.hasArg(OPT_menable_no_nans) || 365 Args.hasArg(OPT_cl_finite_math_only)|| 366 Args.hasArg(OPT_cl_fast_relaxed_math)); 367 Opts.NoZeroInitializedInBSS = Args.hasArg(OPT_mno_zero_initialized_in_bss); 368 Opts.BackendOptions = Args.getAllArgValues(OPT_backend_option); 369 Opts.NumRegisterParameters = getLastArgIntValue(Args, OPT_mregparm, 0, Diags); 370 Opts.NoGlobalMerge = Args.hasArg(OPT_mno_global_merge); 371 Opts.NoExecStack = Args.hasArg(OPT_mno_exec_stack); 372 Opts.EnableSegmentedStacks = Args.hasArg(OPT_split_stacks); 373 Opts.RelaxAll = Args.hasArg(OPT_mrelax_all); 374 Opts.OmitLeafFramePointer = Args.hasArg(OPT_momit_leaf_frame_pointer); 375 Opts.SaveTempLabels = Args.hasArg(OPT_msave_temp_labels); 376 Opts.NoDwarf2CFIAsm = Args.hasArg(OPT_fno_dwarf2_cfi_asm); 377 Opts.NoDwarfDirectoryAsm = Args.hasArg(OPT_fno_dwarf_directory_asm); 378 Opts.SoftFloat = Args.hasArg(OPT_msoft_float); 379 Opts.StrictEnums = Args.hasArg(OPT_fstrict_enums); 380 Opts.UnsafeFPMath = Args.hasArg(OPT_menable_unsafe_fp_math) || 381 Args.hasArg(OPT_cl_unsafe_math_optimizations) || 382 Args.hasArg(OPT_cl_fast_relaxed_math); 383 Opts.UnwindTables = Args.hasArg(OPT_munwind_tables); 384 Opts.RelocationModel = Args.getLastArgValue(OPT_mrelocation_model, "pic"); 385 Opts.TrapFuncName = Args.getLastArgValue(OPT_ftrap_function_EQ); 386 Opts.UseInitArray = Args.hasArg(OPT_fuse_init_array); 387 388 Opts.FunctionSections = Args.hasArg(OPT_ffunction_sections); 389 Opts.DataSections = Args.hasArg(OPT_fdata_sections); 390 391 Opts.MainFileName = Args.getLastArgValue(OPT_main_file_name); 392 Opts.VerifyModule = !Args.hasArg(OPT_disable_llvm_verifier); 393 Opts.SanitizeRecover = !Args.hasArg(OPT_fno_sanitize_recover); 394 395 Opts.DisableGCov = Args.hasArg(OPT_test_coverage); 396 Opts.EmitGcovArcs = Args.hasArg(OPT_femit_coverage_data); 397 Opts.EmitGcovNotes = Args.hasArg(OPT_femit_coverage_notes); 398 if (Opts.EmitGcovArcs || Opts.EmitGcovNotes) { 399 Opts.CoverageFile = Args.getLastArgValue(OPT_coverage_file); 400 Opts.CoverageExtraChecksum = Args.hasArg(OPT_coverage_cfg_checksum); 401 Opts.CoverageNoFunctionNamesInData = 402 Args.hasArg(OPT_coverage_no_function_names_in_data); 403 if (Args.hasArg(OPT_coverage_version_EQ)) { 404 StringRef CoverageVersion = Args.getLastArgValue(OPT_coverage_version_EQ); 405 if (CoverageVersion.size() != 4) { 406 Diags.Report(diag::err_drv_invalid_value) 407 << Args.getLastArg(OPT_coverage_version_EQ)->getAsString(Args) 408 << CoverageVersion; 409 } else { 410 memcpy(Opts.CoverageVersion, CoverageVersion.data(), 4); 411 } 412 } 413 } 414 415 Opts.InstrumentFunctions = Args.hasArg(OPT_finstrument_functions); 416 Opts.InstrumentForProfiling = Args.hasArg(OPT_pg); 417 Opts.EmitOpenCLArgMetadata = Args.hasArg(OPT_cl_kernel_arg_info); 418 Opts.DebugCompilationDir = Args.getLastArgValue(OPT_fdebug_compilation_dir); 419 Opts.LinkBitcodeFile = Args.getLastArgValue(OPT_mlink_bitcode_file); 420 Opts.SanitizerBlacklistFile = Args.getLastArgValue(OPT_fsanitize_blacklist); 421 Opts.SanitizeMemoryTrackOrigins = 422 Args.hasArg(OPT_fsanitize_memory_track_origins); 423 Opts.SanitizeAddressZeroBaseShadow = 424 Args.hasArg(OPT_fsanitize_address_zero_base_shadow); 425 Opts.SanitizeUndefinedTrapOnError = 426 Args.hasArg(OPT_fsanitize_undefined_trap_on_error); 427 Opts.SSPBufferSize = 428 getLastArgIntValue(Args, OPT_stack_protector_buffer_size, 8, Diags); 429 Opts.StackRealignment = Args.hasArg(OPT_mstackrealign); 430 if (Arg *A = Args.getLastArg(OPT_mstack_alignment)) { 431 StringRef Val = A->getValue(); 432 unsigned StackAlignment = Opts.StackAlignment; 433 Val.getAsInteger(10, StackAlignment); 434 Opts.StackAlignment = StackAlignment; 435 } 436 437 if (Arg *A = Args.getLastArg(OPT_fobjc_dispatch_method_EQ)) { 438 StringRef Name = A->getValue(); 439 unsigned Method = llvm::StringSwitch<unsigned>(Name) 440 .Case("legacy", CodeGenOptions::Legacy) 441 .Case("non-legacy", CodeGenOptions::NonLegacy) 442 .Case("mixed", CodeGenOptions::Mixed) 443 .Default(~0U); 444 if (Method == ~0U) { 445 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Name; 446 Success = false; 447 } else { 448 Opts.setObjCDispatchMethod( 449 static_cast<CodeGenOptions::ObjCDispatchMethodKind>(Method)); 450 } 451 } 452 453 if (Arg *A = Args.getLastArg(OPT_ftlsmodel_EQ)) { 454 StringRef Name = A->getValue(); 455 unsigned Model = llvm::StringSwitch<unsigned>(Name) 456 .Case("global-dynamic", CodeGenOptions::GeneralDynamicTLSModel) 457 .Case("local-dynamic", CodeGenOptions::LocalDynamicTLSModel) 458 .Case("initial-exec", CodeGenOptions::InitialExecTLSModel) 459 .Case("local-exec", CodeGenOptions::LocalExecTLSModel) 460 .Default(~0U); 461 if (Model == ~0U) { 462 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Name; 463 Success = false; 464 } else { 465 Opts.setDefaultTLSModel(static_cast<CodeGenOptions::TLSModel>(Model)); 466 } 467 } 468 469 if (Arg *A = Args.getLastArg(OPT_ffp_contract)) { 470 StringRef Val = A->getValue(); 471 if (Val == "fast") 472 Opts.setFPContractMode(CodeGenOptions::FPC_Fast); 473 else if (Val == "on") 474 Opts.setFPContractMode(CodeGenOptions::FPC_On); 475 else if (Val == "off") 476 Opts.setFPContractMode(CodeGenOptions::FPC_Off); 477 else 478 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Val; 479 } 480 481 return Success; 482 } 483 484 static void ParseDependencyOutputArgs(DependencyOutputOptions &Opts, 485 ArgList &Args) { 486 using namespace options; 487 Opts.OutputFile = Args.getLastArgValue(OPT_dependency_file); 488 Opts.Targets = Args.getAllArgValues(OPT_MT); 489 Opts.IncludeSystemHeaders = Args.hasArg(OPT_sys_header_deps); 490 Opts.UsePhonyTargets = Args.hasArg(OPT_MP); 491 Opts.ShowHeaderIncludes = Args.hasArg(OPT_H); 492 Opts.HeaderIncludeOutputFile = Args.getLastArgValue(OPT_header_include_file); 493 Opts.AddMissingHeaderDeps = Args.hasArg(OPT_MG); 494 Opts.DOTOutputFile = Args.getLastArgValue(OPT_dependency_dot); 495 } 496 497 bool clang::ParseDiagnosticArgs(DiagnosticOptions &Opts, ArgList &Args, 498 DiagnosticsEngine *Diags) { 499 using namespace options; 500 bool Success = true; 501 502 Opts.DiagnosticLogFile = Args.getLastArgValue(OPT_diagnostic_log_file); 503 Opts.DiagnosticSerializationFile = 504 Args.getLastArgValue(OPT_diagnostic_serialized_file); 505 Opts.IgnoreWarnings = Args.hasArg(OPT_w); 506 Opts.NoRewriteMacros = Args.hasArg(OPT_Wno_rewrite_macros); 507 Opts.Pedantic = Args.hasArg(OPT_pedantic); 508 Opts.PedanticErrors = Args.hasArg(OPT_pedantic_errors); 509 Opts.ShowCarets = !Args.hasArg(OPT_fno_caret_diagnostics); 510 Opts.ShowColors = Args.hasArg(OPT_fcolor_diagnostics); 511 Opts.ShowColumn = Args.hasFlag(OPT_fshow_column, 512 OPT_fno_show_column, 513 /*Default=*/true); 514 Opts.ShowFixits = !Args.hasArg(OPT_fno_diagnostics_fixit_info); 515 Opts.ShowLocation = !Args.hasArg(OPT_fno_show_source_location); 516 Opts.ShowOptionNames = Args.hasArg(OPT_fdiagnostics_show_option); 517 518 // Default behavior is to not to show note include stacks. 519 Opts.ShowNoteIncludeStack = false; 520 if (Arg *A = Args.getLastArg(OPT_fdiagnostics_show_note_include_stack, 521 OPT_fno_diagnostics_show_note_include_stack)) 522 if (A->getOption().matches(OPT_fdiagnostics_show_note_include_stack)) 523 Opts.ShowNoteIncludeStack = true; 524 525 StringRef ShowOverloads = 526 Args.getLastArgValue(OPT_fshow_overloads_EQ, "all"); 527 if (ShowOverloads == "best") 528 Opts.setShowOverloads(Ovl_Best); 529 else if (ShowOverloads == "all") 530 Opts.setShowOverloads(Ovl_All); 531 else { 532 Success = false; 533 if (Diags) 534 Diags->Report(diag::err_drv_invalid_value) 535 << Args.getLastArg(OPT_fshow_overloads_EQ)->getAsString(Args) 536 << ShowOverloads; 537 } 538 539 StringRef ShowCategory = 540 Args.getLastArgValue(OPT_fdiagnostics_show_category, "none"); 541 if (ShowCategory == "none") 542 Opts.ShowCategories = 0; 543 else if (ShowCategory == "id") 544 Opts.ShowCategories = 1; 545 else if (ShowCategory == "name") 546 Opts.ShowCategories = 2; 547 else { 548 Success = false; 549 if (Diags) 550 Diags->Report(diag::err_drv_invalid_value) 551 << Args.getLastArg(OPT_fdiagnostics_show_category)->getAsString(Args) 552 << ShowCategory; 553 } 554 555 StringRef Format = 556 Args.getLastArgValue(OPT_fdiagnostics_format, "clang"); 557 if (Format == "clang") 558 Opts.setFormat(DiagnosticOptions::Clang); 559 else if (Format == "msvc") 560 Opts.setFormat(DiagnosticOptions::Msvc); 561 else if (Format == "vi") 562 Opts.setFormat(DiagnosticOptions::Vi); 563 else { 564 Success = false; 565 if (Diags) 566 Diags->Report(diag::err_drv_invalid_value) 567 << Args.getLastArg(OPT_fdiagnostics_format)->getAsString(Args) 568 << Format; 569 } 570 571 Opts.ShowSourceRanges = Args.hasArg(OPT_fdiagnostics_print_source_range_info); 572 Opts.ShowParseableFixits = Args.hasArg(OPT_fdiagnostics_parseable_fixits); 573 Opts.ShowPresumedLoc = !Args.hasArg(OPT_fno_diagnostics_use_presumed_location); 574 Opts.VerifyDiagnostics = Args.hasArg(OPT_verify); 575 Opts.ElideType = !Args.hasArg(OPT_fno_elide_type); 576 Opts.ShowTemplateTree = Args.hasArg(OPT_fdiagnostics_show_template_tree); 577 Opts.ErrorLimit = getLastArgIntValue(Args, OPT_ferror_limit, 0, Diags); 578 Opts.MacroBacktraceLimit = 579 getLastArgIntValue(Args, OPT_fmacro_backtrace_limit, 580 DiagnosticOptions::DefaultMacroBacktraceLimit, Diags); 581 Opts.TemplateBacktraceLimit = getLastArgIntValue( 582 Args, OPT_ftemplate_backtrace_limit, 583 DiagnosticOptions::DefaultTemplateBacktraceLimit, Diags); 584 Opts.ConstexprBacktraceLimit = getLastArgIntValue( 585 Args, OPT_fconstexpr_backtrace_limit, 586 DiagnosticOptions::DefaultConstexprBacktraceLimit, Diags); 587 Opts.TabStop = getLastArgIntValue(Args, OPT_ftabstop, 588 DiagnosticOptions::DefaultTabStop, Diags); 589 if (Opts.TabStop == 0 || Opts.TabStop > DiagnosticOptions::MaxTabStop) { 590 Opts.TabStop = DiagnosticOptions::DefaultTabStop; 591 if (Diags) 592 Diags->Report(diag::warn_ignoring_ftabstop_value) 593 << Opts.TabStop << DiagnosticOptions::DefaultTabStop; 594 } 595 Opts.MessageLength = getLastArgIntValue(Args, OPT_fmessage_length, 0, Diags); 596 addWarningArgs(Args, Opts.Warnings); 597 598 return Success; 599 } 600 601 static void ParseFileSystemArgs(FileSystemOptions &Opts, ArgList &Args) { 602 Opts.WorkingDir = Args.getLastArgValue(OPT_working_directory); 603 } 604 605 static InputKind ParseFrontendArgs(FrontendOptions &Opts, ArgList &Args, 606 DiagnosticsEngine &Diags) { 607 using namespace options; 608 Opts.ProgramAction = frontend::ParseSyntaxOnly; 609 if (const Arg *A = Args.getLastArg(OPT_Action_Group)) { 610 switch (A->getOption().getID()) { 611 default: 612 llvm_unreachable("Invalid option in group!"); 613 case OPT_ast_list: 614 Opts.ProgramAction = frontend::ASTDeclList; break; 615 case OPT_ast_dump: 616 Opts.ProgramAction = frontend::ASTDump; break; 617 case OPT_ast_dump_xml: 618 Opts.ProgramAction = frontend::ASTDumpXML; break; 619 case OPT_ast_print: 620 Opts.ProgramAction = frontend::ASTPrint; break; 621 case OPT_ast_view: 622 Opts.ProgramAction = frontend::ASTView; break; 623 case OPT_dump_raw_tokens: 624 Opts.ProgramAction = frontend::DumpRawTokens; break; 625 case OPT_dump_tokens: 626 Opts.ProgramAction = frontend::DumpTokens; break; 627 case OPT_S: 628 Opts.ProgramAction = frontend::EmitAssembly; break; 629 case OPT_emit_llvm_bc: 630 Opts.ProgramAction = frontend::EmitBC; break; 631 case OPT_emit_html: 632 Opts.ProgramAction = frontend::EmitHTML; break; 633 case OPT_emit_llvm: 634 Opts.ProgramAction = frontend::EmitLLVM; break; 635 case OPT_emit_llvm_only: 636 Opts.ProgramAction = frontend::EmitLLVMOnly; break; 637 case OPT_emit_codegen_only: 638 Opts.ProgramAction = frontend::EmitCodeGenOnly; break; 639 case OPT_emit_obj: 640 Opts.ProgramAction = frontend::EmitObj; break; 641 case OPT_fixit_EQ: 642 Opts.FixItSuffix = A->getValue(); 643 // fall-through! 644 case OPT_fixit: 645 Opts.ProgramAction = frontend::FixIt; break; 646 case OPT_emit_module: 647 Opts.ProgramAction = frontend::GenerateModule; break; 648 case OPT_emit_pch: 649 Opts.ProgramAction = frontend::GeneratePCH; break; 650 case OPT_emit_pth: 651 Opts.ProgramAction = frontend::GeneratePTH; break; 652 case OPT_init_only: 653 Opts.ProgramAction = frontend::InitOnly; break; 654 case OPT_fsyntax_only: 655 Opts.ProgramAction = frontend::ParseSyntaxOnly; break; 656 case OPT_module_file_info: 657 Opts.ProgramAction = frontend::ModuleFileInfo; break; 658 case OPT_print_decl_contexts: 659 Opts.ProgramAction = frontend::PrintDeclContext; break; 660 case OPT_print_preamble: 661 Opts.ProgramAction = frontend::PrintPreamble; break; 662 case OPT_E: 663 Opts.ProgramAction = frontend::PrintPreprocessedInput; break; 664 case OPT_rewrite_macros: 665 Opts.ProgramAction = frontend::RewriteMacros; break; 666 case OPT_rewrite_objc: 667 Opts.ProgramAction = frontend::RewriteObjC; break; 668 case OPT_rewrite_test: 669 Opts.ProgramAction = frontend::RewriteTest; break; 670 case OPT_analyze: 671 Opts.ProgramAction = frontend::RunAnalysis; break; 672 case OPT_migrate: 673 Opts.ProgramAction = frontend::MigrateSource; break; 674 case OPT_Eonly: 675 Opts.ProgramAction = frontend::RunPreprocessorOnly; break; 676 } 677 } 678 679 if (const Arg* A = Args.getLastArg(OPT_plugin)) { 680 Opts.Plugins.push_back(A->getValue(0)); 681 Opts.ProgramAction = frontend::PluginAction; 682 Opts.ActionName = A->getValue(); 683 684 for (arg_iterator it = Args.filtered_begin(OPT_plugin_arg), 685 end = Args.filtered_end(); it != end; ++it) { 686 if ((*it)->getValue(0) == Opts.ActionName) 687 Opts.PluginArgs.push_back((*it)->getValue(1)); 688 } 689 } 690 691 Opts.AddPluginActions = Args.getAllArgValues(OPT_add_plugin); 692 Opts.AddPluginArgs.resize(Opts.AddPluginActions.size()); 693 for (int i = 0, e = Opts.AddPluginActions.size(); i != e; ++i) { 694 for (arg_iterator it = Args.filtered_begin(OPT_plugin_arg), 695 end = Args.filtered_end(); it != end; ++it) { 696 if ((*it)->getValue(0) == Opts.AddPluginActions[i]) 697 Opts.AddPluginArgs[i].push_back((*it)->getValue(1)); 698 } 699 } 700 701 if (const Arg *A = Args.getLastArg(OPT_code_completion_at)) { 702 Opts.CodeCompletionAt = 703 ParsedSourceLocation::FromString(A->getValue()); 704 if (Opts.CodeCompletionAt.FileName.empty()) 705 Diags.Report(diag::err_drv_invalid_value) 706 << A->getAsString(Args) << A->getValue(); 707 } 708 Opts.DisableFree = Args.hasArg(OPT_disable_free); 709 710 Opts.OutputFile = Args.getLastArgValue(OPT_o); 711 Opts.Plugins = Args.getAllArgValues(OPT_load); 712 Opts.RelocatablePCH = Args.hasArg(OPT_relocatable_pch); 713 Opts.ShowHelp = Args.hasArg(OPT_help); 714 Opts.ShowStats = Args.hasArg(OPT_print_stats); 715 Opts.ShowTimers = Args.hasArg(OPT_ftime_report); 716 Opts.ShowVersion = Args.hasArg(OPT_version); 717 Opts.ASTMergeFiles = Args.getAllArgValues(OPT_ast_merge); 718 Opts.LLVMArgs = Args.getAllArgValues(OPT_mllvm); 719 Opts.FixWhatYouCan = Args.hasArg(OPT_fix_what_you_can); 720 Opts.FixOnlyWarnings = Args.hasArg(OPT_fix_only_warnings); 721 Opts.FixAndRecompile = Args.hasArg(OPT_fixit_recompile); 722 Opts.FixToTemporaries = Args.hasArg(OPT_fixit_to_temp); 723 Opts.ASTDumpFilter = Args.getLastArgValue(OPT_ast_dump_filter); 724 Opts.UseGlobalModuleIndex = !Args.hasArg(OPT_fno_modules_global_index); 725 Opts.GenerateGlobalModuleIndex = Opts.UseGlobalModuleIndex; 726 727 Opts.CodeCompleteOpts.IncludeMacros 728 = Args.hasArg(OPT_code_completion_macros); 729 Opts.CodeCompleteOpts.IncludeCodePatterns 730 = Args.hasArg(OPT_code_completion_patterns); 731 Opts.CodeCompleteOpts.IncludeGlobals 732 = !Args.hasArg(OPT_no_code_completion_globals); 733 Opts.CodeCompleteOpts.IncludeBriefComments 734 = Args.hasArg(OPT_code_completion_brief_comments); 735 736 Opts.OverrideRecordLayoutsFile 737 = Args.getLastArgValue(OPT_foverride_record_layout_EQ); 738 if (const Arg *A = Args.getLastArg(OPT_arcmt_check, 739 OPT_arcmt_modify, 740 OPT_arcmt_migrate)) { 741 switch (A->getOption().getID()) { 742 default: 743 llvm_unreachable("missed a case"); 744 case OPT_arcmt_check: 745 Opts.ARCMTAction = FrontendOptions::ARCMT_Check; 746 break; 747 case OPT_arcmt_modify: 748 Opts.ARCMTAction = FrontendOptions::ARCMT_Modify; 749 break; 750 case OPT_arcmt_migrate: 751 Opts.ARCMTAction = FrontendOptions::ARCMT_Migrate; 752 break; 753 } 754 } 755 Opts.MTMigrateDir = Args.getLastArgValue(OPT_mt_migrate_directory); 756 Opts.ARCMTMigrateReportOut 757 = Args.getLastArgValue(OPT_arcmt_migrate_report_output); 758 Opts.ARCMTMigrateEmitARCErrors 759 = Args.hasArg(OPT_arcmt_migrate_emit_arc_errors); 760 761 if (Args.hasArg(OPT_objcmt_migrate_literals)) 762 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_Literals; 763 if (Args.hasArg(OPT_objcmt_migrate_subscripting)) 764 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_Subscripting; 765 766 if (Opts.ARCMTAction != FrontendOptions::ARCMT_None && 767 Opts.ObjCMTAction != FrontendOptions::ObjCMT_None) { 768 Diags.Report(diag::err_drv_argument_not_allowed_with) 769 << "ARC migration" << "ObjC migration"; 770 } 771 772 InputKind DashX = IK_None; 773 if (const Arg *A = Args.getLastArg(OPT_x)) { 774 DashX = llvm::StringSwitch<InputKind>(A->getValue()) 775 .Case("c", IK_C) 776 .Case("cl", IK_OpenCL) 777 .Case("cuda", IK_CUDA) 778 .Case("c++", IK_CXX) 779 .Case("objective-c", IK_ObjC) 780 .Case("objective-c++", IK_ObjCXX) 781 .Case("cpp-output", IK_PreprocessedC) 782 .Case("assembler-with-cpp", IK_Asm) 783 .Case("c++-cpp-output", IK_PreprocessedCXX) 784 .Case("objective-c-cpp-output", IK_PreprocessedObjC) 785 .Case("objc-cpp-output", IK_PreprocessedObjC) 786 .Case("objective-c++-cpp-output", IK_PreprocessedObjCXX) 787 .Case("objc++-cpp-output", IK_PreprocessedObjCXX) 788 .Case("c-header", IK_C) 789 .Case("cl-header", IK_OpenCL) 790 .Case("objective-c-header", IK_ObjC) 791 .Case("c++-header", IK_CXX) 792 .Case("objective-c++-header", IK_ObjCXX) 793 .Cases("ast", "pcm", IK_AST) 794 .Case("ir", IK_LLVM_IR) 795 .Default(IK_None); 796 if (DashX == IK_None) 797 Diags.Report(diag::err_drv_invalid_value) 798 << A->getAsString(Args) << A->getValue(); 799 } 800 801 // '-' is the default input if none is given. 802 std::vector<std::string> Inputs = Args.getAllArgValues(OPT_INPUT); 803 Opts.Inputs.clear(); 804 if (Inputs.empty()) 805 Inputs.push_back("-"); 806 for (unsigned i = 0, e = Inputs.size(); i != e; ++i) { 807 InputKind IK = DashX; 808 if (IK == IK_None) { 809 IK = FrontendOptions::getInputKindForExtension( 810 StringRef(Inputs[i]).rsplit('.').second); 811 // FIXME: Remove this hack. 812 if (i == 0) 813 DashX = IK; 814 } 815 Opts.Inputs.push_back(FrontendInputFile(Inputs[i], IK)); 816 } 817 818 return DashX; 819 } 820 821 std::string CompilerInvocation::GetResourcesPath(const char *Argv0, 822 void *MainAddr) { 823 llvm::sys::Path P = llvm::sys::Path::GetMainExecutable(Argv0, MainAddr); 824 825 if (!P.isEmpty()) { 826 P.eraseComponent(); // Remove /clang from foo/bin/clang 827 P.eraseComponent(); // Remove /bin from foo/bin 828 829 // Get foo/lib/clang/<version>/include 830 P.appendComponent("lib"); 831 P.appendComponent("clang"); 832 P.appendComponent(CLANG_VERSION_STRING); 833 } 834 835 return P.str(); 836 } 837 838 static void ParseHeaderSearchArgs(HeaderSearchOptions &Opts, ArgList &Args) { 839 using namespace options; 840 Opts.Sysroot = Args.getLastArgValue(OPT_isysroot, "/"); 841 Opts.Verbose = Args.hasArg(OPT_v); 842 Opts.UseBuiltinIncludes = !Args.hasArg(OPT_nobuiltininc); 843 Opts.UseStandardSystemIncludes = !Args.hasArg(OPT_nostdsysteminc); 844 Opts.UseStandardCXXIncludes = !Args.hasArg(OPT_nostdincxx); 845 if (const Arg *A = Args.getLastArg(OPT_stdlib_EQ)) 846 Opts.UseLibcxx = (strcmp(A->getValue(), "libc++") == 0); 847 Opts.ResourceDir = Args.getLastArgValue(OPT_resource_dir); 848 Opts.ModuleCachePath = Args.getLastArgValue(OPT_fmodules_cache_path); 849 Opts.DisableModuleHash = Args.hasArg(OPT_fdisable_module_hash); 850 Opts.ModuleCachePruneInterval = 851 getLastArgIntValue(Args, OPT_fmodules_prune_interval, 7 * 24 * 60 * 60); 852 Opts.ModuleCachePruneAfter = 853 getLastArgIntValue(Args, OPT_fmodules_prune_after, 31 * 24 * 60 * 60); 854 for (arg_iterator it = Args.filtered_begin(OPT_fmodules_ignore_macro), 855 ie = Args.filtered_end(); 856 it != ie; ++it) { 857 StringRef MacroDef = (*it)->getValue(); 858 Opts.ModulesIgnoreMacros.insert(MacroDef.split('=').first); 859 } 860 861 // Add -I..., -F..., and -index-header-map options in order. 862 bool IsIndexHeaderMap = false; 863 for (arg_iterator it = Args.filtered_begin(OPT_I, OPT_F, 864 OPT_index_header_map), 865 ie = Args.filtered_end(); it != ie; ++it) { 866 if ((*it)->getOption().matches(OPT_index_header_map)) { 867 // -index-header-map applies to the next -I or -F. 868 IsIndexHeaderMap = true; 869 continue; 870 } 871 872 frontend::IncludeDirGroup Group 873 = IsIndexHeaderMap? frontend::IndexHeaderMap : frontend::Angled; 874 875 Opts.AddPath((*it)->getValue(), Group, 876 /*IsFramework=*/ (*it)->getOption().matches(OPT_F), true); 877 IsIndexHeaderMap = false; 878 } 879 880 // Add -iprefix/-iwithprefix/-iwithprefixbefore options. 881 StringRef Prefix = ""; // FIXME: This isn't the correct default prefix. 882 for (arg_iterator it = Args.filtered_begin(OPT_iprefix, OPT_iwithprefix, 883 OPT_iwithprefixbefore), 884 ie = Args.filtered_end(); it != ie; ++it) { 885 const Arg *A = *it; 886 if (A->getOption().matches(OPT_iprefix)) 887 Prefix = A->getValue(); 888 else if (A->getOption().matches(OPT_iwithprefix)) 889 Opts.AddPath(Prefix.str() + A->getValue(), 890 frontend::After, false, true); 891 else 892 Opts.AddPath(Prefix.str() + A->getValue(), 893 frontend::Angled, false, true); 894 } 895 896 for (arg_iterator it = Args.filtered_begin(OPT_idirafter), 897 ie = Args.filtered_end(); it != ie; ++it) 898 Opts.AddPath((*it)->getValue(), frontend::After, false, true); 899 for (arg_iterator it = Args.filtered_begin(OPT_iquote), 900 ie = Args.filtered_end(); it != ie; ++it) 901 Opts.AddPath((*it)->getValue(), frontend::Quoted, false, true); 902 for (arg_iterator it = Args.filtered_begin(OPT_isystem, 903 OPT_iwithsysroot), ie = Args.filtered_end(); it != ie; ++it) 904 Opts.AddPath((*it)->getValue(), frontend::System, false, 905 !(*it)->getOption().matches(OPT_iwithsysroot)); 906 for (arg_iterator it = Args.filtered_begin(OPT_iframework), 907 ie = Args.filtered_end(); it != ie; ++it) 908 Opts.AddPath((*it)->getValue(), frontend::System, true, true); 909 910 // Add the paths for the various language specific isystem flags. 911 for (arg_iterator it = Args.filtered_begin(OPT_c_isystem), 912 ie = Args.filtered_end(); it != ie; ++it) 913 Opts.AddPath((*it)->getValue(), frontend::CSystem, false, true); 914 for (arg_iterator it = Args.filtered_begin(OPT_cxx_isystem), 915 ie = Args.filtered_end(); it != ie; ++it) 916 Opts.AddPath((*it)->getValue(), frontend::CXXSystem, false, true); 917 for (arg_iterator it = Args.filtered_begin(OPT_objc_isystem), 918 ie = Args.filtered_end(); it != ie; ++it) 919 Opts.AddPath((*it)->getValue(), frontend::ObjCSystem, false,true); 920 for (arg_iterator it = Args.filtered_begin(OPT_objcxx_isystem), 921 ie = Args.filtered_end(); it != ie; ++it) 922 Opts.AddPath((*it)->getValue(), frontend::ObjCXXSystem, false, true); 923 924 // Add the internal paths from a driver that detects standard include paths. 925 for (arg_iterator I = Args.filtered_begin(OPT_internal_isystem, 926 OPT_internal_externc_isystem), 927 E = Args.filtered_end(); 928 I != E; ++I) { 929 frontend::IncludeDirGroup Group = frontend::System; 930 if ((*I)->getOption().matches(OPT_internal_externc_isystem)) 931 Group = frontend::ExternCSystem; 932 Opts.AddPath((*I)->getValue(), Group, false, true); 933 } 934 935 // Add the path prefixes which are implicitly treated as being system headers. 936 for (arg_iterator I = Args.filtered_begin(OPT_isystem_prefix, 937 OPT_ino_system_prefix), 938 E = Args.filtered_end(); 939 I != E; ++I) 940 Opts.AddSystemHeaderPrefix((*I)->getValue(), 941 (*I)->getOption().matches(OPT_isystem_prefix)); 942 } 943 944 void CompilerInvocation::setLangDefaults(LangOptions &Opts, InputKind IK, 945 LangStandard::Kind LangStd) { 946 // Set some properties which depend solely on the input kind; it would be nice 947 // to move these to the language standard, and have the driver resolve the 948 // input kind + language standard. 949 if (IK == IK_Asm) { 950 Opts.AsmPreprocessor = 1; 951 } else if (IK == IK_ObjC || 952 IK == IK_ObjCXX || 953 IK == IK_PreprocessedObjC || 954 IK == IK_PreprocessedObjCXX) { 955 Opts.ObjC1 = Opts.ObjC2 = 1; 956 } 957 958 if (LangStd == LangStandard::lang_unspecified) { 959 // Based on the base language, pick one. 960 switch (IK) { 961 case IK_None: 962 case IK_AST: 963 case IK_LLVM_IR: 964 llvm_unreachable("Invalid input kind!"); 965 case IK_OpenCL: 966 LangStd = LangStandard::lang_opencl; 967 break; 968 case IK_CUDA: 969 LangStd = LangStandard::lang_cuda; 970 break; 971 case IK_Asm: 972 case IK_C: 973 case IK_PreprocessedC: 974 case IK_ObjC: 975 case IK_PreprocessedObjC: 976 LangStd = LangStandard::lang_gnu99; 977 break; 978 case IK_CXX: 979 case IK_PreprocessedCXX: 980 case IK_ObjCXX: 981 case IK_PreprocessedObjCXX: 982 LangStd = LangStandard::lang_gnucxx98; 983 break; 984 } 985 } 986 987 const LangStandard &Std = LangStandard::getLangStandardForKind(LangStd); 988 Opts.LineComment = Std.hasLineComments(); 989 Opts.C99 = Std.isC99(); 990 Opts.C11 = Std.isC11(); 991 Opts.CPlusPlus = Std.isCPlusPlus(); 992 Opts.CPlusPlus11 = Std.isCPlusPlus11(); 993 Opts.CPlusPlus1y = Std.isCPlusPlus1y(); 994 Opts.Digraphs = Std.hasDigraphs(); 995 Opts.GNUMode = Std.isGNUMode(); 996 Opts.GNUInline = !Std.isC99(); 997 Opts.HexFloats = Std.hasHexFloats(); 998 Opts.ImplicitInt = Std.hasImplicitInt(); 999 1000 // Set OpenCL Version. 1001 if (LangStd == LangStandard::lang_opencl) { 1002 Opts.OpenCL = 1; 1003 Opts.OpenCLVersion = 100; 1004 } 1005 else if (LangStd == LangStandard::lang_opencl11) { 1006 Opts.OpenCL = 1; 1007 Opts.OpenCLVersion = 110; 1008 } 1009 else if (LangStd == LangStandard::lang_opencl12) { 1010 Opts.OpenCL = 1; 1011 Opts.OpenCLVersion = 120; 1012 } 1013 1014 // OpenCL has some additional defaults. 1015 if (Opts.OpenCL) { 1016 Opts.AltiVec = 0; 1017 Opts.CXXOperatorNames = 1; 1018 Opts.LaxVectorConversions = 0; 1019 Opts.DefaultFPContract = 1; 1020 Opts.NativeHalfType = 1; 1021 } 1022 1023 if (LangStd == LangStandard::lang_cuda) 1024 Opts.CUDA = 1; 1025 1026 // OpenCL and C++ both have bool, true, false keywords. 1027 Opts.Bool = Opts.OpenCL || Opts.CPlusPlus; 1028 1029 // C++ has wchar_t keyword. 1030 Opts.WChar = Opts.CPlusPlus; 1031 1032 Opts.GNUKeywords = Opts.GNUMode; 1033 Opts.CXXOperatorNames = Opts.CPlusPlus; 1034 1035 // Mimicing gcc's behavior, trigraphs are only enabled if -trigraphs 1036 // is specified, or -std is set to a conforming mode. 1037 Opts.Trigraphs = !Opts.GNUMode; 1038 1039 Opts.DollarIdents = !Opts.AsmPreprocessor; 1040 } 1041 1042 /// Attempt to parse a visibility value out of the given argument. 1043 static Visibility parseVisibility(Arg *arg, ArgList &args, 1044 DiagnosticsEngine &diags) { 1045 StringRef value = arg->getValue(); 1046 if (value == "default") { 1047 return DefaultVisibility; 1048 } else if (value == "hidden") { 1049 return HiddenVisibility; 1050 } else if (value == "protected") { 1051 // FIXME: diagnose if target does not support protected visibility 1052 return ProtectedVisibility; 1053 } 1054 1055 diags.Report(diag::err_drv_invalid_value) 1056 << arg->getAsString(args) << value; 1057 return DefaultVisibility; 1058 } 1059 1060 static void ParseLangArgs(LangOptions &Opts, ArgList &Args, InputKind IK, 1061 DiagnosticsEngine &Diags) { 1062 // FIXME: Cleanup per-file based stuff. 1063 LangStandard::Kind LangStd = LangStandard::lang_unspecified; 1064 if (const Arg *A = Args.getLastArg(OPT_std_EQ)) { 1065 LangStd = llvm::StringSwitch<LangStandard::Kind>(A->getValue()) 1066 #define LANGSTANDARD(id, name, desc, features) \ 1067 .Case(name, LangStandard::lang_##id) 1068 #include "clang/Frontend/LangStandards.def" 1069 .Default(LangStandard::lang_unspecified); 1070 if (LangStd == LangStandard::lang_unspecified) 1071 Diags.Report(diag::err_drv_invalid_value) 1072 << A->getAsString(Args) << A->getValue(); 1073 else { 1074 // Valid standard, check to make sure language and standard are compatable. 1075 const LangStandard &Std = LangStandard::getLangStandardForKind(LangStd); 1076 switch (IK) { 1077 case IK_C: 1078 case IK_ObjC: 1079 case IK_PreprocessedC: 1080 case IK_PreprocessedObjC: 1081 if (!(Std.isC89() || Std.isC99())) 1082 Diags.Report(diag::err_drv_argument_not_allowed_with) 1083 << A->getAsString(Args) << "C/ObjC"; 1084 break; 1085 case IK_CXX: 1086 case IK_ObjCXX: 1087 case IK_PreprocessedCXX: 1088 case IK_PreprocessedObjCXX: 1089 if (!Std.isCPlusPlus()) 1090 Diags.Report(diag::err_drv_argument_not_allowed_with) 1091 << A->getAsString(Args) << "C++/ObjC++"; 1092 break; 1093 case IK_OpenCL: 1094 if (!Std.isC99()) 1095 Diags.Report(diag::err_drv_argument_not_allowed_with) 1096 << A->getAsString(Args) << "OpenCL"; 1097 break; 1098 case IK_CUDA: 1099 if (!Std.isCPlusPlus()) 1100 Diags.Report(diag::err_drv_argument_not_allowed_with) 1101 << A->getAsString(Args) << "CUDA"; 1102 break; 1103 default: 1104 break; 1105 } 1106 } 1107 } 1108 1109 // -cl-std only applies for OpenCL language standards. 1110 // Override the -std option in this case. 1111 if (const Arg *A = Args.getLastArg(OPT_cl_std_EQ)) { 1112 LangStandard::Kind OpenCLLangStd 1113 = llvm::StringSwitch<LangStandard::Kind>(A->getValue()) 1114 .Case("CL", LangStandard::lang_opencl) 1115 .Case("CL1.1", LangStandard::lang_opencl11) 1116 .Case("CL1.2", LangStandard::lang_opencl12) 1117 .Default(LangStandard::lang_unspecified); 1118 1119 if (OpenCLLangStd == LangStandard::lang_unspecified) { 1120 Diags.Report(diag::err_drv_invalid_value) 1121 << A->getAsString(Args) << A->getValue(); 1122 } 1123 else 1124 LangStd = OpenCLLangStd; 1125 } 1126 1127 CompilerInvocation::setLangDefaults(Opts, IK, LangStd); 1128 1129 // We abuse '-f[no-]gnu-keywords' to force overriding all GNU-extension 1130 // keywords. This behavior is provided by GCC's poorly named '-fasm' flag, 1131 // while a subset (the non-C++ GNU keywords) is provided by GCC's 1132 // '-fgnu-keywords'. Clang conflates the two for simplicity under the single 1133 // name, as it doesn't seem a useful distinction. 1134 Opts.GNUKeywords = Args.hasFlag(OPT_fgnu_keywords, OPT_fno_gnu_keywords, 1135 Opts.GNUKeywords); 1136 1137 if (Args.hasArg(OPT_fno_operator_names)) 1138 Opts.CXXOperatorNames = 0; 1139 1140 if (Opts.ObjC1) { 1141 if (Arg *arg = Args.getLastArg(OPT_fobjc_runtime_EQ)) { 1142 StringRef value = arg->getValue(); 1143 if (Opts.ObjCRuntime.tryParse(value)) 1144 Diags.Report(diag::err_drv_unknown_objc_runtime) << value; 1145 } 1146 1147 if (Args.hasArg(OPT_fobjc_gc_only)) 1148 Opts.setGC(LangOptions::GCOnly); 1149 else if (Args.hasArg(OPT_fobjc_gc)) 1150 Opts.setGC(LangOptions::HybridGC); 1151 else if (Args.hasArg(OPT_fobjc_arc)) { 1152 Opts.ObjCAutoRefCount = 1; 1153 if (!Opts.ObjCRuntime.allowsARC()) 1154 Diags.Report(diag::err_arc_unsupported_on_runtime); 1155 1156 // Only set ObjCARCWeak if ARC is enabled. 1157 if (Args.hasArg(OPT_fobjc_runtime_has_weak)) 1158 Opts.ObjCARCWeak = 1; 1159 else 1160 Opts.ObjCARCWeak = Opts.ObjCRuntime.allowsWeak(); 1161 } 1162 1163 if (Args.hasArg(OPT_fno_objc_infer_related_result_type)) 1164 Opts.ObjCInferRelatedResultType = 0; 1165 } 1166 1167 if (Args.hasArg(OPT_fgnu89_inline)) 1168 Opts.GNUInline = 1; 1169 1170 if (Args.hasArg(OPT_fapple_kext)) { 1171 if (!Opts.CPlusPlus) 1172 Diags.Report(diag::warn_c_kext); 1173 else 1174 Opts.AppleKext = 1; 1175 } 1176 1177 if (Args.hasArg(OPT_print_ivar_layout)) 1178 Opts.ObjCGCBitmapPrint = 1; 1179 if (Args.hasArg(OPT_fno_constant_cfstrings)) 1180 Opts.NoConstantCFStrings = 1; 1181 1182 if (Args.hasArg(OPT_faltivec)) 1183 Opts.AltiVec = 1; 1184 1185 if (Args.hasArg(OPT_pthread)) 1186 Opts.POSIXThreads = 1; 1187 1188 // The value-visibility mode defaults to "default". 1189 if (Arg *visOpt = Args.getLastArg(OPT_fvisibility)) { 1190 Opts.setValueVisibilityMode(parseVisibility(visOpt, Args, Diags)); 1191 } else { 1192 Opts.setValueVisibilityMode(DefaultVisibility); 1193 } 1194 1195 // The type-visibility mode defaults to the value-visibility mode. 1196 if (Arg *typeVisOpt = Args.getLastArg(OPT_ftype_visibility)) { 1197 Opts.setTypeVisibilityMode(parseVisibility(typeVisOpt, Args, Diags)); 1198 } else { 1199 Opts.setTypeVisibilityMode(Opts.getValueVisibilityMode()); 1200 } 1201 1202 if (Args.hasArg(OPT_fvisibility_inlines_hidden)) 1203 Opts.InlineVisibilityHidden = 1; 1204 1205 if (Args.hasArg(OPT_ftrapv)) { 1206 Opts.setSignedOverflowBehavior(LangOptions::SOB_Trapping); 1207 // Set the handler, if one is specified. 1208 Opts.OverflowHandler = 1209 Args.getLastArgValue(OPT_ftrapv_handler); 1210 } 1211 else if (Args.hasArg(OPT_fwrapv)) 1212 Opts.setSignedOverflowBehavior(LangOptions::SOB_Defined); 1213 1214 if (Args.hasArg(OPT_trigraphs)) 1215 Opts.Trigraphs = 1; 1216 1217 Opts.DollarIdents = Args.hasFlag(OPT_fdollars_in_identifiers, 1218 OPT_fno_dollars_in_identifiers, 1219 Opts.DollarIdents); 1220 Opts.PascalStrings = Args.hasArg(OPT_fpascal_strings); 1221 Opts.MicrosoftExt 1222 = Args.hasArg(OPT_fms_extensions) || Args.hasArg(OPT_fms_compatibility); 1223 Opts.MicrosoftMode = Args.hasArg(OPT_fms_compatibility); 1224 Opts.AsmBlocks = Args.hasArg(OPT_fasm_blocks) || Opts.MicrosoftExt; 1225 Opts.MSCVersion = getLastArgIntValue(Args, OPT_fmsc_version, 0, Diags); 1226 Opts.Borland = Args.hasArg(OPT_fborland_extensions); 1227 Opts.WritableStrings = Args.hasArg(OPT_fwritable_strings); 1228 Opts.ConstStrings = Args.hasFlag(OPT_fconst_strings, OPT_fno_const_strings, 1229 Opts.ConstStrings); 1230 if (Args.hasArg(OPT_fno_lax_vector_conversions)) 1231 Opts.LaxVectorConversions = 0; 1232 if (Args.hasArg(OPT_fno_threadsafe_statics)) 1233 Opts.ThreadsafeStatics = 0; 1234 Opts.Exceptions = Args.hasArg(OPT_fexceptions); 1235 Opts.ObjCExceptions = Args.hasArg(OPT_fobjc_exceptions); 1236 Opts.CXXExceptions = Args.hasArg(OPT_fcxx_exceptions); 1237 Opts.SjLjExceptions = Args.hasArg(OPT_fsjlj_exceptions); 1238 Opts.TraditionalCPP = Args.hasArg(OPT_traditional_cpp); 1239 1240 Opts.RTTI = !Args.hasArg(OPT_fno_rtti); 1241 Opts.Blocks = Args.hasArg(OPT_fblocks); 1242 Opts.BlocksRuntimeOptional = Args.hasArg(OPT_fblocks_runtime_optional); 1243 Opts.Modules = Args.hasArg(OPT_fmodules); 1244 Opts.CharIsSigned = !Args.hasArg(OPT_fno_signed_char); 1245 Opts.WChar = Opts.CPlusPlus && !Args.hasArg(OPT_fno_wchar); 1246 Opts.ShortWChar = Args.hasArg(OPT_fshort_wchar); 1247 Opts.ShortEnums = Args.hasArg(OPT_fshort_enums); 1248 Opts.Freestanding = Args.hasArg(OPT_ffreestanding); 1249 Opts.NoBuiltin = Args.hasArg(OPT_fno_builtin) || Opts.Freestanding; 1250 Opts.AssumeSaneOperatorNew = !Args.hasArg(OPT_fno_assume_sane_operator_new); 1251 Opts.HeinousExtensions = Args.hasArg(OPT_fheinous_gnu_extensions); 1252 Opts.AccessControl = !Args.hasArg(OPT_fno_access_control); 1253 Opts.ElideConstructors = !Args.hasArg(OPT_fno_elide_constructors); 1254 Opts.MathErrno = Args.hasArg(OPT_fmath_errno); 1255 Opts.InstantiationDepth = 1256 getLastArgIntValue(Args, OPT_ftemplate_depth, 256, Diags); 1257 Opts.ConstexprCallDepth = 1258 getLastArgIntValue(Args, OPT_fconstexpr_depth, 512, Diags); 1259 Opts.ConstexprStepLimit = 1260 getLastArgIntValue(Args, OPT_fconstexpr_steps, 1048576, Diags); 1261 Opts.BracketDepth = getLastArgIntValue(Args, OPT_fbracket_depth, 256, Diags); 1262 Opts.DelayedTemplateParsing = Args.hasArg(OPT_fdelayed_template_parsing); 1263 Opts.NumLargeByValueCopy = 1264 getLastArgIntValue(Args, OPT_Wlarge_by_value_copy_EQ, 0, Diags); 1265 Opts.MSBitfields = Args.hasArg(OPT_mms_bitfields); 1266 Opts.ObjCConstantStringClass = 1267 Args.getLastArgValue(OPT_fconstant_string_class); 1268 Opts.ObjCDefaultSynthProperties = 1269 Args.hasArg(OPT_fobjc_default_synthesize_properties); 1270 Opts.EncodeExtendedBlockSig = 1271 Args.hasArg(OPT_fencode_extended_block_signature); 1272 Opts.EmitAllDecls = Args.hasArg(OPT_femit_all_decls); 1273 Opts.PackStruct = getLastArgIntValue(Args, OPT_fpack_struct_EQ, 0, Diags); 1274 Opts.PICLevel = getLastArgIntValue(Args, OPT_pic_level, 0, Diags); 1275 Opts.PIELevel = getLastArgIntValue(Args, OPT_pie_level, 0, Diags); 1276 Opts.Static = Args.hasArg(OPT_static_define); 1277 Opts.DumpRecordLayoutsSimple = Args.hasArg(OPT_fdump_record_layouts_simple); 1278 Opts.DumpRecordLayouts = Opts.DumpRecordLayoutsSimple 1279 || Args.hasArg(OPT_fdump_record_layouts); 1280 Opts.DumpVTableLayouts = Args.hasArg(OPT_fdump_vtable_layouts); 1281 Opts.SpellChecking = !Args.hasArg(OPT_fno_spell_checking); 1282 Opts.NoBitFieldTypeAlign = Args.hasArg(OPT_fno_bitfield_type_align); 1283 Opts.SinglePrecisionConstants = Args.hasArg(OPT_cl_single_precision_constant); 1284 Opts.FastRelaxedMath = Args.hasArg(OPT_cl_fast_relaxed_math); 1285 Opts.MRTD = Args.hasArg(OPT_mrtd); 1286 Opts.HexagonQdsp6Compat = Args.hasArg(OPT_mqdsp6_compat); 1287 Opts.FakeAddressSpaceMap = Args.hasArg(OPT_ffake_address_space_map); 1288 Opts.ParseUnknownAnytype = Args.hasArg(OPT_funknown_anytype); 1289 Opts.DebuggerSupport = Args.hasArg(OPT_fdebugger_support); 1290 Opts.DebuggerCastResultToId = Args.hasArg(OPT_fdebugger_cast_result_to_id); 1291 Opts.DebuggerObjCLiteral = Args.hasArg(OPT_fdebugger_objc_literal); 1292 Opts.ApplePragmaPack = Args.hasArg(OPT_fapple_pragma_pack); 1293 Opts.CurrentModule = Args.getLastArgValue(OPT_fmodule_name); 1294 1295 // Check if -fopenmp is specified. 1296 Opts.OpenMP = Args.hasArg(OPT_fopenmp); 1297 1298 // Record whether the __DEPRECATED define was requested. 1299 Opts.Deprecated = Args.hasFlag(OPT_fdeprecated_macro, 1300 OPT_fno_deprecated_macro, 1301 Opts.Deprecated); 1302 1303 // FIXME: Eliminate this dependency. 1304 unsigned Opt = getOptimizationLevel(Args, IK, Diags), 1305 OptSize = getOptimizationLevelSize(Args); 1306 Opts.Optimize = Opt != 0; 1307 Opts.OptimizeSize = OptSize != 0; 1308 1309 // This is the __NO_INLINE__ define, which just depends on things like the 1310 // optimization level and -fno-inline, not actually whether the backend has 1311 // inlining enabled. 1312 Opts.NoInlineDefine = !Opt || Args.hasArg(OPT_fno_inline); 1313 1314 Opts.FastMath = Args.hasArg(OPT_ffast_math); 1315 Opts.FiniteMathOnly = Args.hasArg(OPT_ffinite_math_only); 1316 1317 Opts.RetainCommentsFromSystemHeaders = 1318 Args.hasArg(OPT_fretain_comments_from_system_headers); 1319 1320 unsigned SSP = getLastArgIntValue(Args, OPT_stack_protector, 0, Diags); 1321 switch (SSP) { 1322 default: 1323 Diags.Report(diag::err_drv_invalid_value) 1324 << Args.getLastArg(OPT_stack_protector)->getAsString(Args) << SSP; 1325 break; 1326 case 0: Opts.setStackProtector(LangOptions::SSPOff); break; 1327 case 1: Opts.setStackProtector(LangOptions::SSPOn); break; 1328 case 2: Opts.setStackProtector(LangOptions::SSPReq); break; 1329 } 1330 1331 // Parse -fsanitize= arguments. 1332 std::vector<std::string> Sanitizers = Args.getAllArgValues(OPT_fsanitize_EQ); 1333 for (unsigned I = 0, N = Sanitizers.size(); I != N; ++I) { 1334 // Since the Opts.Sanitize* values are bitfields, it's a little tricky to 1335 // efficiently map string values to them. Perform the mapping indirectly: 1336 // convert strings to enumerated values, then switch over the enum to set 1337 // the right bitfield value. 1338 enum Sanitizer { 1339 #define SANITIZER(NAME, ID) \ 1340 ID, 1341 #include "clang/Basic/Sanitizers.def" 1342 Unknown 1343 }; 1344 switch (llvm::StringSwitch<unsigned>(Sanitizers[I]) 1345 #define SANITIZER(NAME, ID) \ 1346 .Case(NAME, ID) 1347 #include "clang/Basic/Sanitizers.def" 1348 .Default(Unknown)) { 1349 #define SANITIZER(NAME, ID) \ 1350 case ID: \ 1351 Opts.Sanitize.ID = true; \ 1352 break; 1353 #include "clang/Basic/Sanitizers.def" 1354 1355 case Unknown: 1356 Diags.Report(diag::err_drv_invalid_value) 1357 << "-fsanitize=" << Sanitizers[I]; 1358 break; 1359 } 1360 } 1361 } 1362 1363 static void ParsePreprocessorArgs(PreprocessorOptions &Opts, ArgList &Args, 1364 FileManager &FileMgr, 1365 DiagnosticsEngine &Diags) { 1366 using namespace options; 1367 Opts.ImplicitPCHInclude = Args.getLastArgValue(OPT_include_pch); 1368 Opts.ImplicitPTHInclude = Args.getLastArgValue(OPT_include_pth); 1369 if (const Arg *A = Args.getLastArg(OPT_token_cache)) 1370 Opts.TokenCache = A->getValue(); 1371 else 1372 Opts.TokenCache = Opts.ImplicitPTHInclude; 1373 Opts.UsePredefines = !Args.hasArg(OPT_undef); 1374 Opts.DetailedRecord = Args.hasArg(OPT_detailed_preprocessing_record); 1375 Opts.DisablePCHValidation = Args.hasArg(OPT_fno_validate_pch); 1376 1377 Opts.DumpDeserializedPCHDecls = Args.hasArg(OPT_dump_deserialized_pch_decls); 1378 for (arg_iterator it = Args.filtered_begin(OPT_error_on_deserialized_pch_decl), 1379 ie = Args.filtered_end(); it != ie; ++it) { 1380 const Arg *A = *it; 1381 Opts.DeserializedPCHDeclsToErrorOn.insert(A->getValue()); 1382 } 1383 1384 if (const Arg *A = Args.getLastArg(OPT_preamble_bytes_EQ)) { 1385 StringRef Value(A->getValue()); 1386 size_t Comma = Value.find(','); 1387 unsigned Bytes = 0; 1388 unsigned EndOfLine = 0; 1389 1390 if (Comma == StringRef::npos || 1391 Value.substr(0, Comma).getAsInteger(10, Bytes) || 1392 Value.substr(Comma + 1).getAsInteger(10, EndOfLine)) 1393 Diags.Report(diag::err_drv_preamble_format); 1394 else { 1395 Opts.PrecompiledPreambleBytes.first = Bytes; 1396 Opts.PrecompiledPreambleBytes.second = (EndOfLine != 0); 1397 } 1398 } 1399 1400 // Add macros from the command line. 1401 for (arg_iterator it = Args.filtered_begin(OPT_D, OPT_U), 1402 ie = Args.filtered_end(); it != ie; ++it) { 1403 if ((*it)->getOption().matches(OPT_D)) 1404 Opts.addMacroDef((*it)->getValue()); 1405 else 1406 Opts.addMacroUndef((*it)->getValue()); 1407 } 1408 1409 Opts.MacroIncludes = Args.getAllArgValues(OPT_imacros); 1410 1411 // Add the ordered list of -includes. 1412 for (arg_iterator it = Args.filtered_begin(OPT_include), 1413 ie = Args.filtered_end(); it != ie; ++it) { 1414 const Arg *A = *it; 1415 Opts.Includes.push_back(A->getValue()); 1416 } 1417 1418 for (arg_iterator it = Args.filtered_begin(OPT_chain_include), 1419 ie = Args.filtered_end(); it != ie; ++it) { 1420 const Arg *A = *it; 1421 Opts.ChainedIncludes.push_back(A->getValue()); 1422 } 1423 1424 // Include 'altivec.h' if -faltivec option present 1425 if (Args.hasArg(OPT_faltivec)) 1426 Opts.Includes.push_back("altivec.h"); 1427 1428 for (arg_iterator it = Args.filtered_begin(OPT_remap_file), 1429 ie = Args.filtered_end(); it != ie; ++it) { 1430 const Arg *A = *it; 1431 std::pair<StringRef,StringRef> Split = 1432 StringRef(A->getValue()).split(';'); 1433 1434 if (Split.second.empty()) { 1435 Diags.Report(diag::err_drv_invalid_remap_file) << A->getAsString(Args); 1436 continue; 1437 } 1438 1439 Opts.addRemappedFile(Split.first, Split.second); 1440 } 1441 1442 if (Arg *A = Args.getLastArg(OPT_fobjc_arc_cxxlib_EQ)) { 1443 StringRef Name = A->getValue(); 1444 unsigned Library = llvm::StringSwitch<unsigned>(Name) 1445 .Case("libc++", ARCXX_libcxx) 1446 .Case("libstdc++", ARCXX_libstdcxx) 1447 .Case("none", ARCXX_nolib) 1448 .Default(~0U); 1449 if (Library == ~0U) 1450 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Name; 1451 else 1452 Opts.ObjCXXARCStandardLibrary = (ObjCXXARCStandardLibraryKind)Library; 1453 } 1454 } 1455 1456 static void ParsePreprocessorOutputArgs(PreprocessorOutputOptions &Opts, 1457 ArgList &Args, 1458 frontend::ActionKind Action) { 1459 using namespace options; 1460 1461 switch (Action) { 1462 case frontend::ASTDeclList: 1463 case frontend::ASTDump: 1464 case frontend::ASTDumpXML: 1465 case frontend::ASTPrint: 1466 case frontend::ASTView: 1467 case frontend::EmitAssembly: 1468 case frontend::EmitBC: 1469 case frontend::EmitHTML: 1470 case frontend::EmitLLVM: 1471 case frontend::EmitLLVMOnly: 1472 case frontend::EmitCodeGenOnly: 1473 case frontend::EmitObj: 1474 case frontend::FixIt: 1475 case frontend::GenerateModule: 1476 case frontend::GeneratePCH: 1477 case frontend::GeneratePTH: 1478 case frontend::ParseSyntaxOnly: 1479 case frontend::ModuleFileInfo: 1480 case frontend::PluginAction: 1481 case frontend::PrintDeclContext: 1482 case frontend::RewriteObjC: 1483 case frontend::RewriteTest: 1484 case frontend::RunAnalysis: 1485 case frontend::MigrateSource: 1486 Opts.ShowCPP = 0; 1487 break; 1488 1489 case frontend::DumpRawTokens: 1490 case frontend::DumpTokens: 1491 case frontend::InitOnly: 1492 case frontend::PrintPreamble: 1493 case frontend::PrintPreprocessedInput: 1494 case frontend::RewriteMacros: 1495 case frontend::RunPreprocessorOnly: 1496 Opts.ShowCPP = !Args.hasArg(OPT_dM); 1497 break; 1498 } 1499 1500 Opts.ShowComments = Args.hasArg(OPT_C); 1501 Opts.ShowLineMarkers = !Args.hasArg(OPT_P); 1502 Opts.ShowMacroComments = Args.hasArg(OPT_CC); 1503 Opts.ShowMacros = Args.hasArg(OPT_dM) || Args.hasArg(OPT_dD); 1504 Opts.RewriteIncludes = Args.hasArg(OPT_frewrite_includes); 1505 } 1506 1507 static void ParseTargetArgs(TargetOptions &Opts, ArgList &Args) { 1508 using namespace options; 1509 Opts.ABI = Args.getLastArgValue(OPT_target_abi); 1510 Opts.CXXABI = Args.getLastArgValue(OPT_cxx_abi); 1511 Opts.CPU = Args.getLastArgValue(OPT_target_cpu); 1512 Opts.FeaturesAsWritten = Args.getAllArgValues(OPT_target_feature); 1513 Opts.LinkerVersion = Args.getLastArgValue(OPT_target_linker_version); 1514 Opts.Triple = llvm::Triple::normalize(Args.getLastArgValue(OPT_triple)); 1515 1516 // Use the default target triple if unspecified. 1517 if (Opts.Triple.empty()) 1518 Opts.Triple = llvm::sys::getDefaultTargetTriple(); 1519 } 1520 1521 // 1522 1523 bool CompilerInvocation::CreateFromArgs(CompilerInvocation &Res, 1524 const char *const *ArgBegin, 1525 const char *const *ArgEnd, 1526 DiagnosticsEngine &Diags) { 1527 bool Success = true; 1528 1529 // Parse the arguments. 1530 OwningPtr<OptTable> Opts(createDriverOptTable()); 1531 unsigned MissingArgIndex, MissingArgCount; 1532 OwningPtr<InputArgList> Args( 1533 Opts->ParseArgs(ArgBegin, ArgEnd,MissingArgIndex, MissingArgCount)); 1534 1535 // Check for missing argument error. 1536 if (MissingArgCount) { 1537 Diags.Report(diag::err_drv_missing_argument) 1538 << Args->getArgString(MissingArgIndex) << MissingArgCount; 1539 Success = false; 1540 } 1541 1542 // Issue errors on unknown arguments. 1543 for (arg_iterator it = Args->filtered_begin(OPT_UNKNOWN), 1544 ie = Args->filtered_end(); it != ie; ++it) { 1545 Diags.Report(diag::err_drv_unknown_argument) << (*it)->getAsString(*Args); 1546 Success = false; 1547 } 1548 1549 // Issue errors on arguments that are not valid for CC1. 1550 for (ArgList::iterator I = Args->begin(), E = Args->end(); 1551 I != E; ++I) { 1552 if ((*I)->getOption().matches(options::OPT_INPUT)) 1553 continue; 1554 if (!(*I)->getOption().hasFlag(options::CC1Option)) { 1555 Diags.Report(diag::err_drv_unknown_argument) << (*I)->getAsString(*Args); 1556 Success = false; 1557 } 1558 } 1559 1560 Success = ParseAnalyzerArgs(*Res.getAnalyzerOpts(), *Args, Diags) && Success; 1561 Success = ParseMigratorArgs(Res.getMigratorOpts(), *Args) && Success; 1562 ParseDependencyOutputArgs(Res.getDependencyOutputOpts(), *Args); 1563 Success = ParseDiagnosticArgs(Res.getDiagnosticOpts(), *Args, &Diags) 1564 && Success; 1565 ParseCommentArgs(Res.getLangOpts()->CommentOpts, *Args); 1566 ParseFileSystemArgs(Res.getFileSystemOpts(), *Args); 1567 // FIXME: We shouldn't have to pass the DashX option around here 1568 InputKind DashX = ParseFrontendArgs(Res.getFrontendOpts(), *Args, Diags); 1569 Success = ParseCodeGenArgs(Res.getCodeGenOpts(), *Args, DashX, Diags) 1570 && Success; 1571 ParseHeaderSearchArgs(Res.getHeaderSearchOpts(), *Args); 1572 if (DashX != IK_AST && DashX != IK_LLVM_IR) { 1573 ParseLangArgs(*Res.getLangOpts(), *Args, DashX, Diags); 1574 if (Res.getFrontendOpts().ProgramAction == frontend::RewriteObjC) 1575 Res.getLangOpts()->ObjCExceptions = 1; 1576 } 1577 // FIXME: ParsePreprocessorArgs uses the FileManager to read the contents of 1578 // PCH file and find the original header name. Remove the need to do that in 1579 // ParsePreprocessorArgs and remove the FileManager 1580 // parameters from the function and the "FileManager.h" #include. 1581 FileManager FileMgr(Res.getFileSystemOpts()); 1582 ParsePreprocessorArgs(Res.getPreprocessorOpts(), *Args, FileMgr, Diags); 1583 ParsePreprocessorOutputArgs(Res.getPreprocessorOutputOpts(), *Args, 1584 Res.getFrontendOpts().ProgramAction); 1585 ParseTargetArgs(Res.getTargetOpts(), *Args); 1586 1587 return Success; 1588 } 1589 1590 namespace { 1591 1592 class ModuleSignature { 1593 SmallVector<uint64_t, 16> Data; 1594 unsigned CurBit; 1595 uint64_t CurValue; 1596 1597 public: 1598 ModuleSignature() : CurBit(0), CurValue(0) { } 1599 1600 void add(uint64_t Value, unsigned Bits); 1601 void add(StringRef Value); 1602 void flush(); 1603 1604 llvm::APInt getAsInteger() const; 1605 }; 1606 } 1607 1608 void ModuleSignature::add(uint64_t Value, unsigned int NumBits) { 1609 CurValue |= Value << CurBit; 1610 if (CurBit + NumBits < 64) { 1611 CurBit += NumBits; 1612 return; 1613 } 1614 1615 // Add the current word. 1616 Data.push_back(CurValue); 1617 1618 if (CurBit) 1619 CurValue = Value >> (64-CurBit); 1620 else 1621 CurValue = 0; 1622 CurBit = (CurBit+NumBits) & 63; 1623 } 1624 1625 void ModuleSignature::flush() { 1626 if (CurBit == 0) 1627 return; 1628 1629 Data.push_back(CurValue); 1630 CurBit = 0; 1631 CurValue = 0; 1632 } 1633 1634 void ModuleSignature::add(StringRef Value) { 1635 for (StringRef::iterator I = Value.begin(), IEnd = Value.end(); I != IEnd;++I) 1636 add(*I, 8); 1637 } 1638 1639 llvm::APInt ModuleSignature::getAsInteger() const { 1640 return llvm::APInt(Data.size() * 64, Data); 1641 } 1642 1643 std::string CompilerInvocation::getModuleHash() const { 1644 // Note: For QoI reasons, the things we use as a hash here should all be 1645 // dumped via the -module-info flag. 1646 using llvm::hash_code; 1647 using llvm::hash_value; 1648 using llvm::hash_combine; 1649 1650 // Start the signature with the compiler version. 1651 // FIXME: We'd rather use something more cryptographically sound than 1652 // CityHash, but this will do for now. 1653 hash_code code = hash_value(getClangFullRepositoryVersion()); 1654 1655 // Extend the signature with the language options 1656 #define LANGOPT(Name, Bits, Default, Description) \ 1657 code = hash_combine(code, LangOpts->Name); 1658 #define ENUM_LANGOPT(Name, Type, Bits, Default, Description) \ 1659 code = hash_combine(code, static_cast<unsigned>(LangOpts->get##Name())); 1660 #define BENIGN_LANGOPT(Name, Bits, Default, Description) 1661 #define BENIGN_ENUM_LANGOPT(Name, Type, Bits, Default, Description) 1662 #include "clang/Basic/LangOptions.def" 1663 1664 // Extend the signature with the target options. 1665 code = hash_combine(code, TargetOpts->Triple, TargetOpts->CPU, 1666 TargetOpts->ABI, TargetOpts->CXXABI, 1667 TargetOpts->LinkerVersion); 1668 for (unsigned i = 0, n = TargetOpts->FeaturesAsWritten.size(); i != n; ++i) 1669 code = hash_combine(code, TargetOpts->FeaturesAsWritten[i]); 1670 1671 // Extend the signature with preprocessor options. 1672 const PreprocessorOptions &ppOpts = getPreprocessorOpts(); 1673 const HeaderSearchOptions &hsOpts = getHeaderSearchOpts(); 1674 code = hash_combine(code, ppOpts.UsePredefines, ppOpts.DetailedRecord); 1675 1676 std::vector<StringRef> MacroDefs; 1677 for (std::vector<std::pair<std::string, bool/*isUndef*/> >::const_iterator 1678 I = getPreprocessorOpts().Macros.begin(), 1679 IEnd = getPreprocessorOpts().Macros.end(); 1680 I != IEnd; ++I) { 1681 // If we're supposed to ignore this macro for the purposes of modules, 1682 // don't put it into the hash. 1683 if (!hsOpts.ModulesIgnoreMacros.empty()) { 1684 // Check whether we're ignoring this macro. 1685 StringRef MacroDef = I->first; 1686 if (hsOpts.ModulesIgnoreMacros.count(MacroDef.split('=').first)) 1687 continue; 1688 } 1689 1690 code = hash_combine(code, I->first, I->second); 1691 } 1692 1693 // Extend the signature with the sysroot. 1694 code = hash_combine(code, hsOpts.Sysroot, hsOpts.UseBuiltinIncludes, 1695 hsOpts.UseStandardSystemIncludes, 1696 hsOpts.UseStandardCXXIncludes, 1697 hsOpts.UseLibcxx); 1698 1699 // Darwin-specific hack: if we have a sysroot, use the contents and 1700 // modification time of 1701 // $sysroot/System/Library/CoreServices/SystemVersion.plist 1702 // as part of the module hash. 1703 if (!hsOpts.Sysroot.empty()) { 1704 llvm::OwningPtr<llvm::MemoryBuffer> buffer; 1705 SmallString<128> systemVersionFile; 1706 systemVersionFile += hsOpts.Sysroot; 1707 llvm::sys::path::append(systemVersionFile, "System"); 1708 llvm::sys::path::append(systemVersionFile, "Library"); 1709 llvm::sys::path::append(systemVersionFile, "CoreServices"); 1710 llvm::sys::path::append(systemVersionFile, "SystemVersion.plist"); 1711 if (!llvm::MemoryBuffer::getFile(systemVersionFile, buffer)) { 1712 code = hash_combine(code, buffer.get()->getBuffer()); 1713 1714 struct stat statBuf; 1715 if (stat(systemVersionFile.c_str(), &statBuf) == 0) 1716 code = hash_combine(code, statBuf.st_mtime); 1717 } 1718 } 1719 1720 return llvm::APInt(64, code).toString(36, /*Signed=*/false); 1721 } 1722 1723 namespace clang { 1724 1725 // Declared in clang/Frontend/Utils.h. 1726 int getLastArgIntValue(const ArgList &Args, OptSpecifier Id, int Default, 1727 DiagnosticsEngine *Diags) { 1728 int Res = Default; 1729 if (Arg *A = Args.getLastArg(Id)) { 1730 if (StringRef(A->getValue()).getAsInteger(10, Res)) { 1731 if (Diags) 1732 Diags->Report(diag::err_drv_invalid_int_value) << A->getAsString(Args) 1733 << A->getValue(); 1734 } 1735 } 1736 return Res; 1737 } 1738 } 1739