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