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/FileSystem.h" 33 #include "llvm/Support/Host.h" 34 #include "llvm/Support/Path.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) || Args.hasArg(OPT_gdwarf_2) || 322 Args.hasArg(OPT_gdwarf_3) || Args.hasArg(OPT_gdwarf_4)) { 323 if (Args.hasFlag(OPT_flimit_debug_info, OPT_fno_limit_debug_info, true)) 324 Opts.setDebugInfo(CodeGenOptions::LimitedDebugInfo); 325 else 326 Opts.setDebugInfo(CodeGenOptions::FullDebugInfo); 327 } 328 Opts.DebugColumnInfo = Args.hasArg(OPT_dwarf_column_info); 329 Opts.SplitDwarfFile = Args.getLastArgValue(OPT_split_dwarf_file); 330 if (Args.hasArg(OPT_gdwarf_2)) 331 Opts.DwarfVersion = 2; 332 else if (Args.hasArg(OPT_gdwarf_3)) 333 Opts.DwarfVersion = 3; 334 else if (Args.hasArg(OPT_gdwarf_4)) 335 Opts.DwarfVersion = 4; 336 else if (Opts.getDebugInfo() != CodeGenOptions::NoDebugInfo) 337 // Default Dwarf version is 3 if we are generating debug information. 338 Opts.DwarfVersion = 3; 339 340 Opts.DisableLLVMOpts = Args.hasArg(OPT_disable_llvm_optzns); 341 Opts.DisableRedZone = Args.hasArg(OPT_disable_red_zone); 342 Opts.ForbidGuardVariables = Args.hasArg(OPT_fforbid_guard_variables); 343 Opts.UseRegisterSizedBitfieldAccess = Args.hasArg( 344 OPT_fuse_register_sized_bitfield_access); 345 Opts.RelaxedAliasing = Args.hasArg(OPT_relaxed_aliasing); 346 Opts.StructPathTBAA = Args.hasArg(OPT_struct_path_tbaa); 347 Opts.DwarfDebugFlags = Args.getLastArgValue(OPT_dwarf_debug_flags); 348 Opts.MergeAllConstants = !Args.hasArg(OPT_fno_merge_all_constants); 349 Opts.NoCommon = Args.hasArg(OPT_fno_common); 350 Opts.NoImplicitFloat = Args.hasArg(OPT_no_implicit_float); 351 Opts.OptimizeSize = getOptimizationLevelSize(Args); 352 Opts.SimplifyLibCalls = !(Args.hasArg(OPT_fno_builtin) || 353 Args.hasArg(OPT_ffreestanding)); 354 Opts.UnrollLoops = 355 Args.hasFlag(OPT_funroll_loops, OPT_fno_unroll_loops, 356 (Opts.OptimizationLevel > 1 && !Opts.OptimizeSize)); 357 358 Opts.Autolink = !Args.hasArg(OPT_fno_autolink); 359 Opts.AsmVerbose = Args.hasArg(OPT_masm_verbose); 360 Opts.ObjCAutoRefCountExceptions = Args.hasArg(OPT_fobjc_arc_exceptions); 361 Opts.CUDAIsDevice = Args.hasArg(OPT_fcuda_is_device); 362 Opts.CXAAtExit = !Args.hasArg(OPT_fno_use_cxa_atexit); 363 Opts.CXXCtorDtorAliases = Args.hasArg(OPT_mconstructor_aliases); 364 Opts.CodeModel = Args.getLastArgValue(OPT_mcode_model); 365 Opts.DebugPass = Args.getLastArgValue(OPT_mdebug_pass); 366 Opts.DisableFPElim = Args.hasArg(OPT_mdisable_fp_elim); 367 Opts.DisableFree = Args.hasArg(OPT_disable_free); 368 Opts.DisableTailCalls = Args.hasArg(OPT_mdisable_tail_calls); 369 Opts.FloatABI = Args.getLastArgValue(OPT_mfloat_abi); 370 Opts.HiddenWeakVTables = Args.hasArg(OPT_fhidden_weak_vtables); 371 Opts.LessPreciseFPMAD = Args.hasArg(OPT_cl_mad_enable); 372 Opts.LimitFloatPrecision = Args.getLastArgValue(OPT_mlimit_float_precision); 373 Opts.NoInfsFPMath = (Args.hasArg(OPT_menable_no_infinities) || 374 Args.hasArg(OPT_cl_finite_math_only)|| 375 Args.hasArg(OPT_cl_fast_relaxed_math)); 376 Opts.NoNaNsFPMath = (Args.hasArg(OPT_menable_no_nans) || 377 Args.hasArg(OPT_cl_finite_math_only)|| 378 Args.hasArg(OPT_cl_fast_relaxed_math)); 379 Opts.NoZeroInitializedInBSS = Args.hasArg(OPT_mno_zero_initialized_in_bss); 380 Opts.BackendOptions = Args.getAllArgValues(OPT_backend_option); 381 Opts.NumRegisterParameters = getLastArgIntValue(Args, OPT_mregparm, 0, Diags); 382 Opts.NoGlobalMerge = Args.hasArg(OPT_mno_global_merge); 383 Opts.NoExecStack = Args.hasArg(OPT_mno_exec_stack); 384 Opts.EnableSegmentedStacks = Args.hasArg(OPT_split_stacks); 385 Opts.RelaxAll = Args.hasArg(OPT_mrelax_all); 386 Opts.OmitLeafFramePointer = Args.hasArg(OPT_momit_leaf_frame_pointer); 387 Opts.SaveTempLabels = Args.hasArg(OPT_msave_temp_labels); 388 Opts.NoDwarf2CFIAsm = Args.hasArg(OPT_fno_dwarf2_cfi_asm); 389 Opts.NoDwarfDirectoryAsm = Args.hasArg(OPT_fno_dwarf_directory_asm); 390 Opts.SoftFloat = Args.hasArg(OPT_msoft_float); 391 Opts.StrictEnums = Args.hasArg(OPT_fstrict_enums); 392 Opts.UnsafeFPMath = Args.hasArg(OPT_menable_unsafe_fp_math) || 393 Args.hasArg(OPT_cl_unsafe_math_optimizations) || 394 Args.hasArg(OPT_cl_fast_relaxed_math); 395 Opts.UnwindTables = Args.hasArg(OPT_munwind_tables); 396 Opts.RelocationModel = Args.getLastArgValue(OPT_mrelocation_model, "pic"); 397 Opts.TrapFuncName = Args.getLastArgValue(OPT_ftrap_function_EQ); 398 Opts.UseInitArray = Args.hasArg(OPT_fuse_init_array); 399 400 Opts.FunctionSections = Args.hasArg(OPT_ffunction_sections); 401 Opts.DataSections = Args.hasArg(OPT_fdata_sections); 402 403 Opts.VectorizeBB = Args.hasArg(OPT_vectorize_slp_aggressive); 404 Opts.VectorizeLoop = Args.hasArg(OPT_vectorize_loops); 405 Opts.VectorizeSLP = Args.hasArg(OPT_vectorize_slp); 406 407 Opts.MainFileName = Args.getLastArgValue(OPT_main_file_name); 408 Opts.VerifyModule = !Args.hasArg(OPT_disable_llvm_verifier); 409 Opts.SanitizeRecover = !Args.hasArg(OPT_fno_sanitize_recover); 410 411 Opts.DisableGCov = Args.hasArg(OPT_test_coverage); 412 Opts.EmitGcovArcs = Args.hasArg(OPT_femit_coverage_data); 413 Opts.EmitGcovNotes = Args.hasArg(OPT_femit_coverage_notes); 414 if (Opts.EmitGcovArcs || Opts.EmitGcovNotes) { 415 Opts.CoverageFile = Args.getLastArgValue(OPT_coverage_file); 416 Opts.CoverageExtraChecksum = Args.hasArg(OPT_coverage_cfg_checksum); 417 Opts.CoverageNoFunctionNamesInData = 418 Args.hasArg(OPT_coverage_no_function_names_in_data); 419 if (Args.hasArg(OPT_coverage_version_EQ)) { 420 StringRef CoverageVersion = Args.getLastArgValue(OPT_coverage_version_EQ); 421 if (CoverageVersion.size() != 4) { 422 Diags.Report(diag::err_drv_invalid_value) 423 << Args.getLastArg(OPT_coverage_version_EQ)->getAsString(Args) 424 << CoverageVersion; 425 } else { 426 memcpy(Opts.CoverageVersion, CoverageVersion.data(), 4); 427 } 428 } 429 } 430 431 Opts.InstrumentFunctions = Args.hasArg(OPT_finstrument_functions); 432 Opts.InstrumentForProfiling = Args.hasArg(OPT_pg); 433 Opts.EmitOpenCLArgMetadata = Args.hasArg(OPT_cl_kernel_arg_info); 434 Opts.DebugCompilationDir = Args.getLastArgValue(OPT_fdebug_compilation_dir); 435 Opts.LinkBitcodeFile = Args.getLastArgValue(OPT_mlink_bitcode_file); 436 Opts.SanitizerBlacklistFile = Args.getLastArgValue(OPT_fsanitize_blacklist); 437 Opts.SanitizeMemoryTrackOrigins = 438 Args.hasArg(OPT_fsanitize_memory_track_origins); 439 Opts.SanitizeAddressZeroBaseShadow = 440 Args.hasArg(OPT_fsanitize_address_zero_base_shadow); 441 Opts.SanitizeUndefinedTrapOnError = 442 Args.hasArg(OPT_fsanitize_undefined_trap_on_error); 443 Opts.SSPBufferSize = 444 getLastArgIntValue(Args, OPT_stack_protector_buffer_size, 8, Diags); 445 Opts.StackRealignment = Args.hasArg(OPT_mstackrealign); 446 if (Arg *A = Args.getLastArg(OPT_mstack_alignment)) { 447 StringRef Val = A->getValue(); 448 unsigned StackAlignment = Opts.StackAlignment; 449 Val.getAsInteger(10, StackAlignment); 450 Opts.StackAlignment = StackAlignment; 451 } 452 453 if (Arg *A = Args.getLastArg(OPT_fobjc_dispatch_method_EQ)) { 454 StringRef Name = A->getValue(); 455 unsigned Method = llvm::StringSwitch<unsigned>(Name) 456 .Case("legacy", CodeGenOptions::Legacy) 457 .Case("non-legacy", CodeGenOptions::NonLegacy) 458 .Case("mixed", CodeGenOptions::Mixed) 459 .Default(~0U); 460 if (Method == ~0U) { 461 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Name; 462 Success = false; 463 } else { 464 Opts.setObjCDispatchMethod( 465 static_cast<CodeGenOptions::ObjCDispatchMethodKind>(Method)); 466 } 467 } 468 469 if (Arg *A = Args.getLastArg(OPT_ftlsmodel_EQ)) { 470 StringRef Name = A->getValue(); 471 unsigned Model = llvm::StringSwitch<unsigned>(Name) 472 .Case("global-dynamic", CodeGenOptions::GeneralDynamicTLSModel) 473 .Case("local-dynamic", CodeGenOptions::LocalDynamicTLSModel) 474 .Case("initial-exec", CodeGenOptions::InitialExecTLSModel) 475 .Case("local-exec", CodeGenOptions::LocalExecTLSModel) 476 .Default(~0U); 477 if (Model == ~0U) { 478 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Name; 479 Success = false; 480 } else { 481 Opts.setDefaultTLSModel(static_cast<CodeGenOptions::TLSModel>(Model)); 482 } 483 } 484 485 if (Arg *A = Args.getLastArg(OPT_ffp_contract)) { 486 StringRef Val = A->getValue(); 487 if (Val == "fast") 488 Opts.setFPContractMode(CodeGenOptions::FPC_Fast); 489 else if (Val == "on") 490 Opts.setFPContractMode(CodeGenOptions::FPC_On); 491 else if (Val == "off") 492 Opts.setFPContractMode(CodeGenOptions::FPC_Off); 493 else 494 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Val; 495 } 496 497 if (Arg *A = Args.getLastArg(OPT_fpcc_struct_return, OPT_freg_struct_return)) { 498 if (A->getOption().matches(OPT_fpcc_struct_return)) { 499 Opts.setStructReturnConvention(CodeGenOptions::SRCK_OnStack); 500 } else { 501 assert(A->getOption().matches(OPT_freg_struct_return)); 502 Opts.setStructReturnConvention(CodeGenOptions::SRCK_InRegs); 503 } 504 } 505 506 Opts.DependentLibraries = Args.getAllArgValues(OPT_dependent_lib); 507 508 return Success; 509 } 510 511 static void ParseDependencyOutputArgs(DependencyOutputOptions &Opts, 512 ArgList &Args) { 513 using namespace options; 514 Opts.OutputFile = Args.getLastArgValue(OPT_dependency_file); 515 Opts.Targets = Args.getAllArgValues(OPT_MT); 516 Opts.IncludeSystemHeaders = Args.hasArg(OPT_sys_header_deps); 517 Opts.UsePhonyTargets = Args.hasArg(OPT_MP); 518 Opts.ShowHeaderIncludes = Args.hasArg(OPT_H); 519 Opts.HeaderIncludeOutputFile = Args.getLastArgValue(OPT_header_include_file); 520 Opts.AddMissingHeaderDeps = Args.hasArg(OPT_MG); 521 Opts.DOTOutputFile = Args.getLastArgValue(OPT_dependency_dot); 522 } 523 524 bool clang::ParseDiagnosticArgs(DiagnosticOptions &Opts, ArgList &Args, 525 DiagnosticsEngine *Diags) { 526 using namespace options; 527 bool Success = true; 528 529 Opts.DiagnosticLogFile = Args.getLastArgValue(OPT_diagnostic_log_file); 530 Opts.DiagnosticSerializationFile = 531 Args.getLastArgValue(OPT_diagnostic_serialized_file); 532 Opts.IgnoreWarnings = Args.hasArg(OPT_w); 533 Opts.NoRewriteMacros = Args.hasArg(OPT_Wno_rewrite_macros); 534 Opts.Pedantic = Args.hasArg(OPT_pedantic); 535 Opts.PedanticErrors = Args.hasArg(OPT_pedantic_errors); 536 Opts.ShowCarets = !Args.hasArg(OPT_fno_caret_diagnostics); 537 Opts.ShowColors = Args.hasArg(OPT_fcolor_diagnostics); 538 Opts.ShowColumn = Args.hasFlag(OPT_fshow_column, 539 OPT_fno_show_column, 540 /*Default=*/true); 541 Opts.ShowFixits = !Args.hasArg(OPT_fno_diagnostics_fixit_info); 542 Opts.ShowLocation = !Args.hasArg(OPT_fno_show_source_location); 543 Opts.ShowOptionNames = Args.hasArg(OPT_fdiagnostics_show_option); 544 545 // Default behavior is to not to show note include stacks. 546 Opts.ShowNoteIncludeStack = false; 547 if (Arg *A = Args.getLastArg(OPT_fdiagnostics_show_note_include_stack, 548 OPT_fno_diagnostics_show_note_include_stack)) 549 if (A->getOption().matches(OPT_fdiagnostics_show_note_include_stack)) 550 Opts.ShowNoteIncludeStack = true; 551 552 StringRef ShowOverloads = 553 Args.getLastArgValue(OPT_fshow_overloads_EQ, "all"); 554 if (ShowOverloads == "best") 555 Opts.setShowOverloads(Ovl_Best); 556 else if (ShowOverloads == "all") 557 Opts.setShowOverloads(Ovl_All); 558 else { 559 Success = false; 560 if (Diags) 561 Diags->Report(diag::err_drv_invalid_value) 562 << Args.getLastArg(OPT_fshow_overloads_EQ)->getAsString(Args) 563 << ShowOverloads; 564 } 565 566 StringRef ShowCategory = 567 Args.getLastArgValue(OPT_fdiagnostics_show_category, "none"); 568 if (ShowCategory == "none") 569 Opts.ShowCategories = 0; 570 else if (ShowCategory == "id") 571 Opts.ShowCategories = 1; 572 else if (ShowCategory == "name") 573 Opts.ShowCategories = 2; 574 else { 575 Success = false; 576 if (Diags) 577 Diags->Report(diag::err_drv_invalid_value) 578 << Args.getLastArg(OPT_fdiagnostics_show_category)->getAsString(Args) 579 << ShowCategory; 580 } 581 582 StringRef Format = 583 Args.getLastArgValue(OPT_fdiagnostics_format, "clang"); 584 if (Format == "clang") 585 Opts.setFormat(DiagnosticOptions::Clang); 586 else if (Format == "msvc") 587 Opts.setFormat(DiagnosticOptions::Msvc); 588 else if (Format == "vi") 589 Opts.setFormat(DiagnosticOptions::Vi); 590 else { 591 Success = false; 592 if (Diags) 593 Diags->Report(diag::err_drv_invalid_value) 594 << Args.getLastArg(OPT_fdiagnostics_format)->getAsString(Args) 595 << Format; 596 } 597 598 Opts.ShowSourceRanges = Args.hasArg(OPT_fdiagnostics_print_source_range_info); 599 Opts.ShowParseableFixits = Args.hasArg(OPT_fdiagnostics_parseable_fixits); 600 Opts.ShowPresumedLoc = !Args.hasArg(OPT_fno_diagnostics_use_presumed_location); 601 Opts.VerifyDiagnostics = Args.hasArg(OPT_verify); 602 Opts.ElideType = !Args.hasArg(OPT_fno_elide_type); 603 Opts.ShowTemplateTree = Args.hasArg(OPT_fdiagnostics_show_template_tree); 604 Opts.ErrorLimit = getLastArgIntValue(Args, OPT_ferror_limit, 0, Diags); 605 Opts.MacroBacktraceLimit = 606 getLastArgIntValue(Args, OPT_fmacro_backtrace_limit, 607 DiagnosticOptions::DefaultMacroBacktraceLimit, Diags); 608 Opts.TemplateBacktraceLimit = getLastArgIntValue( 609 Args, OPT_ftemplate_backtrace_limit, 610 DiagnosticOptions::DefaultTemplateBacktraceLimit, Diags); 611 Opts.ConstexprBacktraceLimit = getLastArgIntValue( 612 Args, OPT_fconstexpr_backtrace_limit, 613 DiagnosticOptions::DefaultConstexprBacktraceLimit, Diags); 614 Opts.TabStop = getLastArgIntValue(Args, OPT_ftabstop, 615 DiagnosticOptions::DefaultTabStop, Diags); 616 if (Opts.TabStop == 0 || Opts.TabStop > DiagnosticOptions::MaxTabStop) { 617 Opts.TabStop = DiagnosticOptions::DefaultTabStop; 618 if (Diags) 619 Diags->Report(diag::warn_ignoring_ftabstop_value) 620 << Opts.TabStop << DiagnosticOptions::DefaultTabStop; 621 } 622 Opts.MessageLength = getLastArgIntValue(Args, OPT_fmessage_length, 0, Diags); 623 addWarningArgs(Args, Opts.Warnings); 624 625 return Success; 626 } 627 628 static void ParseFileSystemArgs(FileSystemOptions &Opts, ArgList &Args) { 629 Opts.WorkingDir = Args.getLastArgValue(OPT_working_directory); 630 } 631 632 static InputKind ParseFrontendArgs(FrontendOptions &Opts, ArgList &Args, 633 DiagnosticsEngine &Diags) { 634 using namespace options; 635 Opts.ProgramAction = frontend::ParseSyntaxOnly; 636 if (const Arg *A = Args.getLastArg(OPT_Action_Group)) { 637 switch (A->getOption().getID()) { 638 default: 639 llvm_unreachable("Invalid option in group!"); 640 case OPT_ast_list: 641 Opts.ProgramAction = frontend::ASTDeclList; break; 642 case OPT_ast_dump: 643 Opts.ProgramAction = frontend::ASTDump; break; 644 case OPT_ast_dump_xml: 645 Opts.ProgramAction = frontend::ASTDumpXML; break; 646 case OPT_ast_print: 647 Opts.ProgramAction = frontend::ASTPrint; break; 648 case OPT_ast_view: 649 Opts.ProgramAction = frontend::ASTView; break; 650 case OPT_dump_raw_tokens: 651 Opts.ProgramAction = frontend::DumpRawTokens; break; 652 case OPT_dump_tokens: 653 Opts.ProgramAction = frontend::DumpTokens; break; 654 case OPT_S: 655 Opts.ProgramAction = frontend::EmitAssembly; break; 656 case OPT_emit_llvm_bc: 657 Opts.ProgramAction = frontend::EmitBC; break; 658 case OPT_emit_html: 659 Opts.ProgramAction = frontend::EmitHTML; break; 660 case OPT_emit_llvm: 661 Opts.ProgramAction = frontend::EmitLLVM; break; 662 case OPT_emit_llvm_only: 663 Opts.ProgramAction = frontend::EmitLLVMOnly; break; 664 case OPT_emit_codegen_only: 665 Opts.ProgramAction = frontend::EmitCodeGenOnly; break; 666 case OPT_emit_obj: 667 Opts.ProgramAction = frontend::EmitObj; break; 668 case OPT_fixit_EQ: 669 Opts.FixItSuffix = A->getValue(); 670 // fall-through! 671 case OPT_fixit: 672 Opts.ProgramAction = frontend::FixIt; break; 673 case OPT_emit_module: 674 Opts.ProgramAction = frontend::GenerateModule; break; 675 case OPT_emit_pch: 676 Opts.ProgramAction = frontend::GeneratePCH; break; 677 case OPT_emit_pth: 678 Opts.ProgramAction = frontend::GeneratePTH; break; 679 case OPT_init_only: 680 Opts.ProgramAction = frontend::InitOnly; break; 681 case OPT_fsyntax_only: 682 Opts.ProgramAction = frontend::ParseSyntaxOnly; break; 683 case OPT_module_file_info: 684 Opts.ProgramAction = frontend::ModuleFileInfo; break; 685 case OPT_print_decl_contexts: 686 Opts.ProgramAction = frontend::PrintDeclContext; break; 687 case OPT_print_preamble: 688 Opts.ProgramAction = frontend::PrintPreamble; break; 689 case OPT_E: 690 Opts.ProgramAction = frontend::PrintPreprocessedInput; break; 691 case OPT_rewrite_macros: 692 Opts.ProgramAction = frontend::RewriteMacros; break; 693 case OPT_rewrite_objc: 694 Opts.ProgramAction = frontend::RewriteObjC; break; 695 case OPT_rewrite_test: 696 Opts.ProgramAction = frontend::RewriteTest; break; 697 case OPT_analyze: 698 Opts.ProgramAction = frontend::RunAnalysis; break; 699 case OPT_migrate: 700 Opts.ProgramAction = frontend::MigrateSource; break; 701 case OPT_Eonly: 702 Opts.ProgramAction = frontend::RunPreprocessorOnly; break; 703 } 704 } 705 706 if (const Arg* A = Args.getLastArg(OPT_plugin)) { 707 Opts.Plugins.push_back(A->getValue(0)); 708 Opts.ProgramAction = frontend::PluginAction; 709 Opts.ActionName = A->getValue(); 710 711 for (arg_iterator it = Args.filtered_begin(OPT_plugin_arg), 712 end = Args.filtered_end(); it != end; ++it) { 713 if ((*it)->getValue(0) == Opts.ActionName) 714 Opts.PluginArgs.push_back((*it)->getValue(1)); 715 } 716 } 717 718 Opts.AddPluginActions = Args.getAllArgValues(OPT_add_plugin); 719 Opts.AddPluginArgs.resize(Opts.AddPluginActions.size()); 720 for (int i = 0, e = Opts.AddPluginActions.size(); i != e; ++i) { 721 for (arg_iterator it = Args.filtered_begin(OPT_plugin_arg), 722 end = Args.filtered_end(); it != end; ++it) { 723 if ((*it)->getValue(0) == Opts.AddPluginActions[i]) 724 Opts.AddPluginArgs[i].push_back((*it)->getValue(1)); 725 } 726 } 727 728 if (const Arg *A = Args.getLastArg(OPT_code_completion_at)) { 729 Opts.CodeCompletionAt = 730 ParsedSourceLocation::FromString(A->getValue()); 731 if (Opts.CodeCompletionAt.FileName.empty()) 732 Diags.Report(diag::err_drv_invalid_value) 733 << A->getAsString(Args) << A->getValue(); 734 } 735 Opts.DisableFree = Args.hasArg(OPT_disable_free); 736 737 Opts.OutputFile = Args.getLastArgValue(OPT_o); 738 Opts.Plugins = Args.getAllArgValues(OPT_load); 739 Opts.RelocatablePCH = Args.hasArg(OPT_relocatable_pch); 740 Opts.ShowHelp = Args.hasArg(OPT_help); 741 Opts.ShowStats = Args.hasArg(OPT_print_stats); 742 Opts.ShowTimers = Args.hasArg(OPT_ftime_report); 743 Opts.ShowVersion = Args.hasArg(OPT_version); 744 Opts.ASTMergeFiles = Args.getAllArgValues(OPT_ast_merge); 745 Opts.LLVMArgs = Args.getAllArgValues(OPT_mllvm); 746 Opts.FixWhatYouCan = Args.hasArg(OPT_fix_what_you_can); 747 Opts.FixOnlyWarnings = Args.hasArg(OPT_fix_only_warnings); 748 Opts.FixAndRecompile = Args.hasArg(OPT_fixit_recompile); 749 Opts.FixToTemporaries = Args.hasArg(OPT_fixit_to_temp); 750 Opts.ASTDumpFilter = Args.getLastArgValue(OPT_ast_dump_filter); 751 Opts.ASTDumpLookups = Args.hasArg(OPT_ast_dump_lookups); 752 Opts.UseGlobalModuleIndex = !Args.hasArg(OPT_fno_modules_global_index); 753 Opts.GenerateGlobalModuleIndex = Opts.UseGlobalModuleIndex; 754 755 Opts.CodeCompleteOpts.IncludeMacros 756 = Args.hasArg(OPT_code_completion_macros); 757 Opts.CodeCompleteOpts.IncludeCodePatterns 758 = Args.hasArg(OPT_code_completion_patterns); 759 Opts.CodeCompleteOpts.IncludeGlobals 760 = !Args.hasArg(OPT_no_code_completion_globals); 761 Opts.CodeCompleteOpts.IncludeBriefComments 762 = Args.hasArg(OPT_code_completion_brief_comments); 763 764 Opts.OverrideRecordLayoutsFile 765 = Args.getLastArgValue(OPT_foverride_record_layout_EQ); 766 if (const Arg *A = Args.getLastArg(OPT_arcmt_check, 767 OPT_arcmt_modify, 768 OPT_arcmt_migrate)) { 769 switch (A->getOption().getID()) { 770 default: 771 llvm_unreachable("missed a case"); 772 case OPT_arcmt_check: 773 Opts.ARCMTAction = FrontendOptions::ARCMT_Check; 774 break; 775 case OPT_arcmt_modify: 776 Opts.ARCMTAction = FrontendOptions::ARCMT_Modify; 777 break; 778 case OPT_arcmt_migrate: 779 Opts.ARCMTAction = FrontendOptions::ARCMT_Migrate; 780 break; 781 } 782 } 783 Opts.MTMigrateDir = Args.getLastArgValue(OPT_mt_migrate_directory); 784 Opts.ARCMTMigrateReportOut 785 = Args.getLastArgValue(OPT_arcmt_migrate_report_output); 786 Opts.ARCMTMigrateEmitARCErrors 787 = Args.hasArg(OPT_arcmt_migrate_emit_arc_errors); 788 789 if (Args.hasArg(OPT_objcmt_migrate_literals)) 790 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_Literals; 791 if (Args.hasArg(OPT_objcmt_migrate_subscripting)) 792 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_Subscripting; 793 if (Args.hasArg(OPT_objcmt_migrate_property)) 794 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_Property; 795 796 if (Opts.ARCMTAction != FrontendOptions::ARCMT_None && 797 Opts.ObjCMTAction != FrontendOptions::ObjCMT_None) { 798 Diags.Report(diag::err_drv_argument_not_allowed_with) 799 << "ARC migration" << "ObjC migration"; 800 } 801 802 InputKind DashX = IK_None; 803 if (const Arg *A = Args.getLastArg(OPT_x)) { 804 DashX = llvm::StringSwitch<InputKind>(A->getValue()) 805 .Case("c", IK_C) 806 .Case("cl", IK_OpenCL) 807 .Case("cuda", IK_CUDA) 808 .Case("c++", IK_CXX) 809 .Case("objective-c", IK_ObjC) 810 .Case("objective-c++", IK_ObjCXX) 811 .Case("cpp-output", IK_PreprocessedC) 812 .Case("assembler-with-cpp", IK_Asm) 813 .Case("c++-cpp-output", IK_PreprocessedCXX) 814 .Case("objective-c-cpp-output", IK_PreprocessedObjC) 815 .Case("objc-cpp-output", IK_PreprocessedObjC) 816 .Case("objective-c++-cpp-output", IK_PreprocessedObjCXX) 817 .Case("objc++-cpp-output", IK_PreprocessedObjCXX) 818 .Case("c-header", IK_C) 819 .Case("cl-header", IK_OpenCL) 820 .Case("objective-c-header", IK_ObjC) 821 .Case("c++-header", IK_CXX) 822 .Case("objective-c++-header", IK_ObjCXX) 823 .Cases("ast", "pcm", IK_AST) 824 .Case("ir", IK_LLVM_IR) 825 .Default(IK_None); 826 if (DashX == IK_None) 827 Diags.Report(diag::err_drv_invalid_value) 828 << A->getAsString(Args) << A->getValue(); 829 } 830 831 // '-' is the default input if none is given. 832 std::vector<std::string> Inputs = Args.getAllArgValues(OPT_INPUT); 833 Opts.Inputs.clear(); 834 if (Inputs.empty()) 835 Inputs.push_back("-"); 836 for (unsigned i = 0, e = Inputs.size(); i != e; ++i) { 837 InputKind IK = DashX; 838 if (IK == IK_None) { 839 IK = FrontendOptions::getInputKindForExtension( 840 StringRef(Inputs[i]).rsplit('.').second); 841 // FIXME: Remove this hack. 842 if (i == 0) 843 DashX = IK; 844 } 845 Opts.Inputs.push_back(FrontendInputFile(Inputs[i], IK)); 846 } 847 848 return DashX; 849 } 850 851 std::string CompilerInvocation::GetResourcesPath(const char *Argv0, 852 void *MainAddr) { 853 SmallString<128> P(llvm::sys::fs::getMainExecutable(Argv0, MainAddr)); 854 855 if (!P.empty()) { 856 llvm::sys::path::remove_filename(P); // Remove /clang from foo/bin/clang 857 llvm::sys::path::remove_filename(P); // Remove /bin from foo/bin 858 859 // Get foo/lib/clang/<version>/include 860 llvm::sys::path::append(P, "lib", "clang", CLANG_VERSION_STRING); 861 } 862 863 return P.str(); 864 } 865 866 static void ParseHeaderSearchArgs(HeaderSearchOptions &Opts, ArgList &Args) { 867 using namespace options; 868 Opts.Sysroot = Args.getLastArgValue(OPT_isysroot, "/"); 869 Opts.Verbose = Args.hasArg(OPT_v); 870 Opts.UseBuiltinIncludes = !Args.hasArg(OPT_nobuiltininc); 871 Opts.UseStandardSystemIncludes = !Args.hasArg(OPT_nostdsysteminc); 872 Opts.UseStandardCXXIncludes = !Args.hasArg(OPT_nostdincxx); 873 if (const Arg *A = Args.getLastArg(OPT_stdlib_EQ)) 874 Opts.UseLibcxx = (strcmp(A->getValue(), "libc++") == 0); 875 Opts.ResourceDir = Args.getLastArgValue(OPT_resource_dir); 876 Opts.ModuleCachePath = Args.getLastArgValue(OPT_fmodules_cache_path); 877 Opts.DisableModuleHash = Args.hasArg(OPT_fdisable_module_hash); 878 // -fmodules implies -fmodule-maps 879 Opts.ModuleMaps = Args.hasArg(OPT_fmodule_maps) || Args.hasArg(OPT_fmodules); 880 Opts.ModuleCachePruneInterval = 881 getLastArgIntValue(Args, OPT_fmodules_prune_interval, 7 * 24 * 60 * 60); 882 Opts.ModuleCachePruneAfter = 883 getLastArgIntValue(Args, OPT_fmodules_prune_after, 31 * 24 * 60 * 60); 884 for (arg_iterator it = Args.filtered_begin(OPT_fmodules_ignore_macro), 885 ie = Args.filtered_end(); 886 it != ie; ++it) { 887 StringRef MacroDef = (*it)->getValue(); 888 Opts.ModulesIgnoreMacros.insert(MacroDef.split('=').first); 889 } 890 891 // Add -I..., -F..., and -index-header-map options in order. 892 bool IsIndexHeaderMap = false; 893 for (arg_iterator it = Args.filtered_begin(OPT_I, OPT_F, 894 OPT_index_header_map), 895 ie = Args.filtered_end(); it != ie; ++it) { 896 if ((*it)->getOption().matches(OPT_index_header_map)) { 897 // -index-header-map applies to the next -I or -F. 898 IsIndexHeaderMap = true; 899 continue; 900 } 901 902 frontend::IncludeDirGroup Group 903 = IsIndexHeaderMap? frontend::IndexHeaderMap : frontend::Angled; 904 905 Opts.AddPath((*it)->getValue(), Group, 906 /*IsFramework=*/ (*it)->getOption().matches(OPT_F), true); 907 IsIndexHeaderMap = false; 908 } 909 910 // Add -iprefix/-iwithprefix/-iwithprefixbefore options. 911 StringRef Prefix = ""; // FIXME: This isn't the correct default prefix. 912 for (arg_iterator it = Args.filtered_begin(OPT_iprefix, OPT_iwithprefix, 913 OPT_iwithprefixbefore), 914 ie = Args.filtered_end(); it != ie; ++it) { 915 const Arg *A = *it; 916 if (A->getOption().matches(OPT_iprefix)) 917 Prefix = A->getValue(); 918 else if (A->getOption().matches(OPT_iwithprefix)) 919 Opts.AddPath(Prefix.str() + A->getValue(), 920 frontend::After, false, true); 921 else 922 Opts.AddPath(Prefix.str() + A->getValue(), 923 frontend::Angled, false, true); 924 } 925 926 for (arg_iterator it = Args.filtered_begin(OPT_idirafter), 927 ie = Args.filtered_end(); it != ie; ++it) 928 Opts.AddPath((*it)->getValue(), frontend::After, false, true); 929 for (arg_iterator it = Args.filtered_begin(OPT_iquote), 930 ie = Args.filtered_end(); it != ie; ++it) 931 Opts.AddPath((*it)->getValue(), frontend::Quoted, false, true); 932 for (arg_iterator it = Args.filtered_begin(OPT_isystem, 933 OPT_iwithsysroot), ie = Args.filtered_end(); it != ie; ++it) 934 Opts.AddPath((*it)->getValue(), frontend::System, false, 935 !(*it)->getOption().matches(OPT_iwithsysroot)); 936 for (arg_iterator it = Args.filtered_begin(OPT_iframework), 937 ie = Args.filtered_end(); it != ie; ++it) 938 Opts.AddPath((*it)->getValue(), frontend::System, true, true); 939 940 // Add the paths for the various language specific isystem flags. 941 for (arg_iterator it = Args.filtered_begin(OPT_c_isystem), 942 ie = Args.filtered_end(); it != ie; ++it) 943 Opts.AddPath((*it)->getValue(), frontend::CSystem, false, true); 944 for (arg_iterator it = Args.filtered_begin(OPT_cxx_isystem), 945 ie = Args.filtered_end(); it != ie; ++it) 946 Opts.AddPath((*it)->getValue(), frontend::CXXSystem, false, true); 947 for (arg_iterator it = Args.filtered_begin(OPT_objc_isystem), 948 ie = Args.filtered_end(); it != ie; ++it) 949 Opts.AddPath((*it)->getValue(), frontend::ObjCSystem, false,true); 950 for (arg_iterator it = Args.filtered_begin(OPT_objcxx_isystem), 951 ie = Args.filtered_end(); it != ie; ++it) 952 Opts.AddPath((*it)->getValue(), frontend::ObjCXXSystem, false, true); 953 954 // Add the internal paths from a driver that detects standard include paths. 955 for (arg_iterator I = Args.filtered_begin(OPT_internal_isystem, 956 OPT_internal_externc_isystem), 957 E = Args.filtered_end(); 958 I != E; ++I) { 959 frontend::IncludeDirGroup Group = frontend::System; 960 if ((*I)->getOption().matches(OPT_internal_externc_isystem)) 961 Group = frontend::ExternCSystem; 962 Opts.AddPath((*I)->getValue(), Group, false, true); 963 } 964 965 // Add the path prefixes which are implicitly treated as being system headers. 966 for (arg_iterator I = Args.filtered_begin(OPT_isystem_prefix, 967 OPT_ino_system_prefix), 968 E = Args.filtered_end(); 969 I != E; ++I) 970 Opts.AddSystemHeaderPrefix((*I)->getValue(), 971 (*I)->getOption().matches(OPT_isystem_prefix)); 972 } 973 974 void CompilerInvocation::setLangDefaults(LangOptions &Opts, InputKind IK, 975 LangStandard::Kind LangStd) { 976 // Set some properties which depend solely on the input kind; it would be nice 977 // to move these to the language standard, and have the driver resolve the 978 // input kind + language standard. 979 if (IK == IK_Asm) { 980 Opts.AsmPreprocessor = 1; 981 } else if (IK == IK_ObjC || 982 IK == IK_ObjCXX || 983 IK == IK_PreprocessedObjC || 984 IK == IK_PreprocessedObjCXX) { 985 Opts.ObjC1 = Opts.ObjC2 = 1; 986 } 987 988 if (LangStd == LangStandard::lang_unspecified) { 989 // Based on the base language, pick one. 990 switch (IK) { 991 case IK_None: 992 case IK_AST: 993 case IK_LLVM_IR: 994 llvm_unreachable("Invalid input kind!"); 995 case IK_OpenCL: 996 LangStd = LangStandard::lang_opencl; 997 break; 998 case IK_CUDA: 999 LangStd = LangStandard::lang_cuda; 1000 break; 1001 case IK_Asm: 1002 case IK_C: 1003 case IK_PreprocessedC: 1004 case IK_ObjC: 1005 case IK_PreprocessedObjC: 1006 LangStd = LangStandard::lang_gnu99; 1007 break; 1008 case IK_CXX: 1009 case IK_PreprocessedCXX: 1010 case IK_ObjCXX: 1011 case IK_PreprocessedObjCXX: 1012 LangStd = LangStandard::lang_gnucxx98; 1013 break; 1014 } 1015 } 1016 1017 const LangStandard &Std = LangStandard::getLangStandardForKind(LangStd); 1018 Opts.LineComment = Std.hasLineComments(); 1019 Opts.C99 = Std.isC99(); 1020 Opts.C11 = Std.isC11(); 1021 Opts.CPlusPlus = Std.isCPlusPlus(); 1022 Opts.CPlusPlus11 = Std.isCPlusPlus11(); 1023 Opts.CPlusPlus1y = Std.isCPlusPlus1y(); 1024 Opts.Digraphs = Std.hasDigraphs(); 1025 Opts.GNUMode = Std.isGNUMode(); 1026 Opts.GNUInline = !Std.isC99(); 1027 Opts.HexFloats = Std.hasHexFloats(); 1028 Opts.ImplicitInt = Std.hasImplicitInt(); 1029 1030 // Set OpenCL Version. 1031 if (LangStd == LangStandard::lang_opencl) { 1032 Opts.OpenCL = 1; 1033 Opts.OpenCLVersion = 100; 1034 } 1035 else if (LangStd == LangStandard::lang_opencl11) { 1036 Opts.OpenCL = 1; 1037 Opts.OpenCLVersion = 110; 1038 } 1039 else if (LangStd == LangStandard::lang_opencl12) { 1040 Opts.OpenCL = 1; 1041 Opts.OpenCLVersion = 120; 1042 } 1043 1044 // OpenCL has some additional defaults. 1045 if (Opts.OpenCL) { 1046 Opts.AltiVec = 0; 1047 Opts.CXXOperatorNames = 1; 1048 Opts.LaxVectorConversions = 0; 1049 Opts.DefaultFPContract = 1; 1050 Opts.NativeHalfType = 1; 1051 } 1052 1053 if (LangStd == LangStandard::lang_cuda) 1054 Opts.CUDA = 1; 1055 1056 // OpenCL and C++ both have bool, true, false keywords. 1057 Opts.Bool = Opts.OpenCL || Opts.CPlusPlus; 1058 1059 // C++ has wchar_t keyword. 1060 Opts.WChar = Opts.CPlusPlus; 1061 1062 Opts.GNUKeywords = Opts.GNUMode; 1063 Opts.CXXOperatorNames = Opts.CPlusPlus; 1064 1065 // Mimicing gcc's behavior, trigraphs are only enabled if -trigraphs 1066 // is specified, or -std is set to a conforming mode. 1067 Opts.Trigraphs = !Opts.GNUMode; 1068 1069 Opts.DollarIdents = !Opts.AsmPreprocessor; 1070 } 1071 1072 /// Attempt to parse a visibility value out of the given argument. 1073 static Visibility parseVisibility(Arg *arg, ArgList &args, 1074 DiagnosticsEngine &diags) { 1075 StringRef value = arg->getValue(); 1076 if (value == "default") { 1077 return DefaultVisibility; 1078 } else if (value == "hidden") { 1079 return HiddenVisibility; 1080 } else if (value == "protected") { 1081 // FIXME: diagnose if target does not support protected visibility 1082 return ProtectedVisibility; 1083 } 1084 1085 diags.Report(diag::err_drv_invalid_value) 1086 << arg->getAsString(args) << value; 1087 return DefaultVisibility; 1088 } 1089 1090 static void ParseLangArgs(LangOptions &Opts, ArgList &Args, InputKind IK, 1091 DiagnosticsEngine &Diags) { 1092 // FIXME: Cleanup per-file based stuff. 1093 LangStandard::Kind LangStd = LangStandard::lang_unspecified; 1094 if (const Arg *A = Args.getLastArg(OPT_std_EQ)) { 1095 LangStd = llvm::StringSwitch<LangStandard::Kind>(A->getValue()) 1096 #define LANGSTANDARD(id, name, desc, features) \ 1097 .Case(name, LangStandard::lang_##id) 1098 #include "clang/Frontend/LangStandards.def" 1099 .Default(LangStandard::lang_unspecified); 1100 if (LangStd == LangStandard::lang_unspecified) 1101 Diags.Report(diag::err_drv_invalid_value) 1102 << A->getAsString(Args) << A->getValue(); 1103 else { 1104 // Valid standard, check to make sure language and standard are compatable. 1105 const LangStandard &Std = LangStandard::getLangStandardForKind(LangStd); 1106 switch (IK) { 1107 case IK_C: 1108 case IK_ObjC: 1109 case IK_PreprocessedC: 1110 case IK_PreprocessedObjC: 1111 if (!(Std.isC89() || Std.isC99())) 1112 Diags.Report(diag::err_drv_argument_not_allowed_with) 1113 << A->getAsString(Args) << "C/ObjC"; 1114 break; 1115 case IK_CXX: 1116 case IK_ObjCXX: 1117 case IK_PreprocessedCXX: 1118 case IK_PreprocessedObjCXX: 1119 if (!Std.isCPlusPlus()) 1120 Diags.Report(diag::err_drv_argument_not_allowed_with) 1121 << A->getAsString(Args) << "C++/ObjC++"; 1122 break; 1123 case IK_OpenCL: 1124 if (!Std.isC99()) 1125 Diags.Report(diag::err_drv_argument_not_allowed_with) 1126 << A->getAsString(Args) << "OpenCL"; 1127 break; 1128 case IK_CUDA: 1129 if (!Std.isCPlusPlus()) 1130 Diags.Report(diag::err_drv_argument_not_allowed_with) 1131 << A->getAsString(Args) << "CUDA"; 1132 break; 1133 default: 1134 break; 1135 } 1136 } 1137 } 1138 1139 // -cl-std only applies for OpenCL language standards. 1140 // Override the -std option in this case. 1141 if (const Arg *A = Args.getLastArg(OPT_cl_std_EQ)) { 1142 LangStandard::Kind OpenCLLangStd 1143 = llvm::StringSwitch<LangStandard::Kind>(A->getValue()) 1144 .Case("CL", LangStandard::lang_opencl) 1145 .Case("CL1.1", LangStandard::lang_opencl11) 1146 .Case("CL1.2", LangStandard::lang_opencl12) 1147 .Default(LangStandard::lang_unspecified); 1148 1149 if (OpenCLLangStd == LangStandard::lang_unspecified) { 1150 Diags.Report(diag::err_drv_invalid_value) 1151 << A->getAsString(Args) << A->getValue(); 1152 } 1153 else 1154 LangStd = OpenCLLangStd; 1155 } 1156 1157 CompilerInvocation::setLangDefaults(Opts, IK, LangStd); 1158 1159 // We abuse '-f[no-]gnu-keywords' to force overriding all GNU-extension 1160 // keywords. This behavior is provided by GCC's poorly named '-fasm' flag, 1161 // while a subset (the non-C++ GNU keywords) is provided by GCC's 1162 // '-fgnu-keywords'. Clang conflates the two for simplicity under the single 1163 // name, as it doesn't seem a useful distinction. 1164 Opts.GNUKeywords = Args.hasFlag(OPT_fgnu_keywords, OPT_fno_gnu_keywords, 1165 Opts.GNUKeywords); 1166 1167 if (Args.hasArg(OPT_fno_operator_names)) 1168 Opts.CXXOperatorNames = 0; 1169 1170 if (Opts.ObjC1) { 1171 if (Arg *arg = Args.getLastArg(OPT_fobjc_runtime_EQ)) { 1172 StringRef value = arg->getValue(); 1173 if (Opts.ObjCRuntime.tryParse(value)) 1174 Diags.Report(diag::err_drv_unknown_objc_runtime) << value; 1175 } 1176 1177 if (Args.hasArg(OPT_fobjc_gc_only)) 1178 Opts.setGC(LangOptions::GCOnly); 1179 else if (Args.hasArg(OPT_fobjc_gc)) 1180 Opts.setGC(LangOptions::HybridGC); 1181 else if (Args.hasArg(OPT_fobjc_arc)) { 1182 Opts.ObjCAutoRefCount = 1; 1183 if (!Opts.ObjCRuntime.allowsARC()) 1184 Diags.Report(diag::err_arc_unsupported_on_runtime); 1185 1186 // Only set ObjCARCWeak if ARC is enabled. 1187 if (Args.hasArg(OPT_fobjc_runtime_has_weak)) 1188 Opts.ObjCARCWeak = 1; 1189 else 1190 Opts.ObjCARCWeak = Opts.ObjCRuntime.allowsWeak(); 1191 } 1192 1193 if (Args.hasArg(OPT_fno_objc_infer_related_result_type)) 1194 Opts.ObjCInferRelatedResultType = 0; 1195 } 1196 1197 if (Args.hasArg(OPT_fgnu89_inline)) 1198 Opts.GNUInline = 1; 1199 1200 if (Args.hasArg(OPT_fapple_kext)) { 1201 if (!Opts.CPlusPlus) 1202 Diags.Report(diag::warn_c_kext); 1203 else 1204 Opts.AppleKext = 1; 1205 } 1206 1207 if (Args.hasArg(OPT_print_ivar_layout)) 1208 Opts.ObjCGCBitmapPrint = 1; 1209 if (Args.hasArg(OPT_fno_constant_cfstrings)) 1210 Opts.NoConstantCFStrings = 1; 1211 1212 if (Args.hasArg(OPT_faltivec)) 1213 Opts.AltiVec = 1; 1214 1215 if (Args.hasArg(OPT_pthread)) 1216 Opts.POSIXThreads = 1; 1217 1218 // The value-visibility mode defaults to "default". 1219 if (Arg *visOpt = Args.getLastArg(OPT_fvisibility)) { 1220 Opts.setValueVisibilityMode(parseVisibility(visOpt, Args, Diags)); 1221 } else { 1222 Opts.setValueVisibilityMode(DefaultVisibility); 1223 } 1224 1225 // The type-visibility mode defaults to the value-visibility mode. 1226 if (Arg *typeVisOpt = Args.getLastArg(OPT_ftype_visibility)) { 1227 Opts.setTypeVisibilityMode(parseVisibility(typeVisOpt, Args, Diags)); 1228 } else { 1229 Opts.setTypeVisibilityMode(Opts.getValueVisibilityMode()); 1230 } 1231 1232 if (Args.hasArg(OPT_fvisibility_inlines_hidden)) 1233 Opts.InlineVisibilityHidden = 1; 1234 1235 if (Args.hasArg(OPT_ftrapv)) { 1236 Opts.setSignedOverflowBehavior(LangOptions::SOB_Trapping); 1237 // Set the handler, if one is specified. 1238 Opts.OverflowHandler = 1239 Args.getLastArgValue(OPT_ftrapv_handler); 1240 } 1241 else if (Args.hasArg(OPT_fwrapv)) 1242 Opts.setSignedOverflowBehavior(LangOptions::SOB_Defined); 1243 1244 if (Args.hasArg(OPT_trigraphs)) 1245 Opts.Trigraphs = 1; 1246 1247 Opts.DollarIdents = Args.hasFlag(OPT_fdollars_in_identifiers, 1248 OPT_fno_dollars_in_identifiers, 1249 Opts.DollarIdents); 1250 Opts.PascalStrings = Args.hasArg(OPT_fpascal_strings); 1251 Opts.MicrosoftExt 1252 = Args.hasArg(OPT_fms_extensions) || Args.hasArg(OPT_fms_compatibility); 1253 Opts.MicrosoftMode = Args.hasArg(OPT_fms_compatibility); 1254 Opts.AsmBlocks = Args.hasArg(OPT_fasm_blocks) || Opts.MicrosoftExt; 1255 Opts.MSCVersion = getLastArgIntValue(Args, OPT_fmsc_version, 0, Diags); 1256 Opts.Borland = Args.hasArg(OPT_fborland_extensions); 1257 Opts.WritableStrings = Args.hasArg(OPT_fwritable_strings); 1258 Opts.ConstStrings = Args.hasFlag(OPT_fconst_strings, OPT_fno_const_strings, 1259 Opts.ConstStrings); 1260 if (Args.hasArg(OPT_fno_lax_vector_conversions)) 1261 Opts.LaxVectorConversions = 0; 1262 if (Args.hasArg(OPT_fno_threadsafe_statics)) 1263 Opts.ThreadsafeStatics = 0; 1264 Opts.Exceptions = Args.hasArg(OPT_fexceptions); 1265 Opts.ObjCExceptions = Args.hasArg(OPT_fobjc_exceptions); 1266 Opts.CXXExceptions = Args.hasArg(OPT_fcxx_exceptions); 1267 Opts.SjLjExceptions = Args.hasArg(OPT_fsjlj_exceptions); 1268 Opts.TraditionalCPP = Args.hasArg(OPT_traditional_cpp); 1269 1270 Opts.RTTI = !Args.hasArg(OPT_fno_rtti); 1271 Opts.Blocks = Args.hasArg(OPT_fblocks); 1272 Opts.BlocksRuntimeOptional = Args.hasArg(OPT_fblocks_runtime_optional); 1273 Opts.Modules = Args.hasArg(OPT_fmodules); 1274 Opts.CharIsSigned = !Args.hasArg(OPT_fno_signed_char); 1275 Opts.WChar = Opts.CPlusPlus && !Args.hasArg(OPT_fno_wchar); 1276 Opts.ShortWChar = Args.hasArg(OPT_fshort_wchar); 1277 Opts.ShortEnums = Args.hasArg(OPT_fshort_enums); 1278 Opts.Freestanding = Args.hasArg(OPT_ffreestanding); 1279 Opts.NoBuiltin = Args.hasArg(OPT_fno_builtin) || Opts.Freestanding; 1280 Opts.NoMathBuiltin = Args.hasArg(OPT_fno_math_builtin); 1281 Opts.AssumeSaneOperatorNew = !Args.hasArg(OPT_fno_assume_sane_operator_new); 1282 Opts.HeinousExtensions = Args.hasArg(OPT_fheinous_gnu_extensions); 1283 Opts.AccessControl = !Args.hasArg(OPT_fno_access_control); 1284 Opts.ElideConstructors = !Args.hasArg(OPT_fno_elide_constructors); 1285 Opts.MathErrno = Args.hasArg(OPT_fmath_errno); 1286 Opts.InstantiationDepth = 1287 getLastArgIntValue(Args, OPT_ftemplate_depth, 256, Diags); 1288 Opts.ConstexprCallDepth = 1289 getLastArgIntValue(Args, OPT_fconstexpr_depth, 512, Diags); 1290 Opts.ConstexprStepLimit = 1291 getLastArgIntValue(Args, OPT_fconstexpr_steps, 1048576, Diags); 1292 Opts.BracketDepth = getLastArgIntValue(Args, OPT_fbracket_depth, 256, Diags); 1293 Opts.DelayedTemplateParsing = Args.hasArg(OPT_fdelayed_template_parsing); 1294 Opts.NumLargeByValueCopy = 1295 getLastArgIntValue(Args, OPT_Wlarge_by_value_copy_EQ, 0, Diags); 1296 Opts.MSBitfields = Args.hasArg(OPT_mms_bitfields); 1297 Opts.ObjCConstantStringClass = 1298 Args.getLastArgValue(OPT_fconstant_string_class); 1299 Opts.ObjCDefaultSynthProperties = 1300 Args.hasArg(OPT_fobjc_default_synthesize_properties); 1301 Opts.EncodeExtendedBlockSig = 1302 Args.hasArg(OPT_fencode_extended_block_signature); 1303 Opts.EmitAllDecls = Args.hasArg(OPT_femit_all_decls); 1304 Opts.PackStruct = getLastArgIntValue(Args, OPT_fpack_struct_EQ, 0, Diags); 1305 Opts.PICLevel = getLastArgIntValue(Args, OPT_pic_level, 0, Diags); 1306 Opts.PIELevel = getLastArgIntValue(Args, OPT_pie_level, 0, Diags); 1307 Opts.Static = Args.hasArg(OPT_static_define); 1308 Opts.DumpRecordLayoutsSimple = Args.hasArg(OPT_fdump_record_layouts_simple); 1309 Opts.DumpRecordLayouts = Opts.DumpRecordLayoutsSimple 1310 || Args.hasArg(OPT_fdump_record_layouts); 1311 Opts.DumpVTableLayouts = Args.hasArg(OPT_fdump_vtable_layouts); 1312 Opts.SpellChecking = !Args.hasArg(OPT_fno_spell_checking); 1313 Opts.NoBitFieldTypeAlign = Args.hasArg(OPT_fno_bitfield_type_align); 1314 Opts.SinglePrecisionConstants = Args.hasArg(OPT_cl_single_precision_constant); 1315 Opts.FastRelaxedMath = Args.hasArg(OPT_cl_fast_relaxed_math); 1316 Opts.MRTD = Args.hasArg(OPT_mrtd); 1317 Opts.HexagonQdsp6Compat = Args.hasArg(OPT_mqdsp6_compat); 1318 Opts.FakeAddressSpaceMap = Args.hasArg(OPT_ffake_address_space_map); 1319 Opts.ParseUnknownAnytype = Args.hasArg(OPT_funknown_anytype); 1320 Opts.DebuggerSupport = Args.hasArg(OPT_fdebugger_support); 1321 Opts.DebuggerCastResultToId = Args.hasArg(OPT_fdebugger_cast_result_to_id); 1322 Opts.DebuggerObjCLiteral = Args.hasArg(OPT_fdebugger_objc_literal); 1323 Opts.ApplePragmaPack = Args.hasArg(OPT_fapple_pragma_pack); 1324 Opts.CurrentModule = Args.getLastArgValue(OPT_fmodule_name); 1325 1326 // Check if -fopenmp is specified. 1327 Opts.OpenMP = Args.hasArg(OPT_fopenmp); 1328 1329 // Record whether the __DEPRECATED define was requested. 1330 Opts.Deprecated = Args.hasFlag(OPT_fdeprecated_macro, 1331 OPT_fno_deprecated_macro, 1332 Opts.Deprecated); 1333 1334 // FIXME: Eliminate this dependency. 1335 unsigned Opt = getOptimizationLevel(Args, IK, Diags), 1336 OptSize = getOptimizationLevelSize(Args); 1337 Opts.Optimize = Opt != 0; 1338 Opts.OptimizeSize = OptSize != 0; 1339 1340 // This is the __NO_INLINE__ define, which just depends on things like the 1341 // optimization level and -fno-inline, not actually whether the backend has 1342 // inlining enabled. 1343 Opts.NoInlineDefine = !Opt || Args.hasArg(OPT_fno_inline); 1344 1345 Opts.FastMath = Args.hasArg(OPT_ffast_math); 1346 Opts.FiniteMathOnly = Args.hasArg(OPT_ffinite_math_only); 1347 1348 Opts.RetainCommentsFromSystemHeaders = 1349 Args.hasArg(OPT_fretain_comments_from_system_headers); 1350 1351 unsigned SSP = getLastArgIntValue(Args, OPT_stack_protector, 0, Diags); 1352 switch (SSP) { 1353 default: 1354 Diags.Report(diag::err_drv_invalid_value) 1355 << Args.getLastArg(OPT_stack_protector)->getAsString(Args) << SSP; 1356 break; 1357 case 0: Opts.setStackProtector(LangOptions::SSPOff); break; 1358 case 1: Opts.setStackProtector(LangOptions::SSPOn); break; 1359 case 2: Opts.setStackProtector(LangOptions::SSPReq); break; 1360 } 1361 1362 // Parse -fsanitize= arguments. 1363 std::vector<std::string> Sanitizers = Args.getAllArgValues(OPT_fsanitize_EQ); 1364 for (unsigned I = 0, N = Sanitizers.size(); I != N; ++I) { 1365 // Since the Opts.Sanitize* values are bitfields, it's a little tricky to 1366 // efficiently map string values to them. Perform the mapping indirectly: 1367 // convert strings to enumerated values, then switch over the enum to set 1368 // the right bitfield value. 1369 enum Sanitizer { 1370 #define SANITIZER(NAME, ID) \ 1371 ID, 1372 #include "clang/Basic/Sanitizers.def" 1373 Unknown 1374 }; 1375 switch (llvm::StringSwitch<unsigned>(Sanitizers[I]) 1376 #define SANITIZER(NAME, ID) \ 1377 .Case(NAME, ID) 1378 #include "clang/Basic/Sanitizers.def" 1379 .Default(Unknown)) { 1380 #define SANITIZER(NAME, ID) \ 1381 case ID: \ 1382 Opts.Sanitize.ID = true; \ 1383 break; 1384 #include "clang/Basic/Sanitizers.def" 1385 1386 case Unknown: 1387 Diags.Report(diag::err_drv_invalid_value) 1388 << "-fsanitize=" << Sanitizers[I]; 1389 break; 1390 } 1391 } 1392 } 1393 1394 static void ParsePreprocessorArgs(PreprocessorOptions &Opts, ArgList &Args, 1395 FileManager &FileMgr, 1396 DiagnosticsEngine &Diags) { 1397 using namespace options; 1398 Opts.ImplicitPCHInclude = Args.getLastArgValue(OPT_include_pch); 1399 Opts.ImplicitPTHInclude = Args.getLastArgValue(OPT_include_pth); 1400 if (const Arg *A = Args.getLastArg(OPT_token_cache)) 1401 Opts.TokenCache = A->getValue(); 1402 else 1403 Opts.TokenCache = Opts.ImplicitPTHInclude; 1404 Opts.UsePredefines = !Args.hasArg(OPT_undef); 1405 Opts.DetailedRecord = Args.hasArg(OPT_detailed_preprocessing_record); 1406 Opts.DisablePCHValidation = Args.hasArg(OPT_fno_validate_pch); 1407 1408 Opts.DumpDeserializedPCHDecls = Args.hasArg(OPT_dump_deserialized_pch_decls); 1409 for (arg_iterator it = Args.filtered_begin(OPT_error_on_deserialized_pch_decl), 1410 ie = Args.filtered_end(); it != ie; ++it) { 1411 const Arg *A = *it; 1412 Opts.DeserializedPCHDeclsToErrorOn.insert(A->getValue()); 1413 } 1414 1415 if (const Arg *A = Args.getLastArg(OPT_preamble_bytes_EQ)) { 1416 StringRef Value(A->getValue()); 1417 size_t Comma = Value.find(','); 1418 unsigned Bytes = 0; 1419 unsigned EndOfLine = 0; 1420 1421 if (Comma == StringRef::npos || 1422 Value.substr(0, Comma).getAsInteger(10, Bytes) || 1423 Value.substr(Comma + 1).getAsInteger(10, EndOfLine)) 1424 Diags.Report(diag::err_drv_preamble_format); 1425 else { 1426 Opts.PrecompiledPreambleBytes.first = Bytes; 1427 Opts.PrecompiledPreambleBytes.second = (EndOfLine != 0); 1428 } 1429 } 1430 1431 // Add macros from the command line. 1432 for (arg_iterator it = Args.filtered_begin(OPT_D, OPT_U), 1433 ie = Args.filtered_end(); it != ie; ++it) { 1434 if ((*it)->getOption().matches(OPT_D)) 1435 Opts.addMacroDef((*it)->getValue()); 1436 else 1437 Opts.addMacroUndef((*it)->getValue()); 1438 } 1439 1440 Opts.MacroIncludes = Args.getAllArgValues(OPT_imacros); 1441 1442 // Add the ordered list of -includes. 1443 for (arg_iterator it = Args.filtered_begin(OPT_include), 1444 ie = Args.filtered_end(); it != ie; ++it) { 1445 const Arg *A = *it; 1446 Opts.Includes.push_back(A->getValue()); 1447 } 1448 1449 for (arg_iterator it = Args.filtered_begin(OPT_chain_include), 1450 ie = Args.filtered_end(); it != ie; ++it) { 1451 const Arg *A = *it; 1452 Opts.ChainedIncludes.push_back(A->getValue()); 1453 } 1454 1455 // Include 'altivec.h' if -faltivec option present 1456 if (Args.hasArg(OPT_faltivec)) 1457 Opts.Includes.push_back("altivec.h"); 1458 1459 for (arg_iterator it = Args.filtered_begin(OPT_remap_file), 1460 ie = Args.filtered_end(); it != ie; ++it) { 1461 const Arg *A = *it; 1462 std::pair<StringRef,StringRef> Split = 1463 StringRef(A->getValue()).split(';'); 1464 1465 if (Split.second.empty()) { 1466 Diags.Report(diag::err_drv_invalid_remap_file) << A->getAsString(Args); 1467 continue; 1468 } 1469 1470 Opts.addRemappedFile(Split.first, Split.second); 1471 } 1472 1473 if (Arg *A = Args.getLastArg(OPT_fobjc_arc_cxxlib_EQ)) { 1474 StringRef Name = A->getValue(); 1475 unsigned Library = llvm::StringSwitch<unsigned>(Name) 1476 .Case("libc++", ARCXX_libcxx) 1477 .Case("libstdc++", ARCXX_libstdcxx) 1478 .Case("none", ARCXX_nolib) 1479 .Default(~0U); 1480 if (Library == ~0U) 1481 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Name; 1482 else 1483 Opts.ObjCXXARCStandardLibrary = (ObjCXXARCStandardLibraryKind)Library; 1484 } 1485 } 1486 1487 static void ParsePreprocessorOutputArgs(PreprocessorOutputOptions &Opts, 1488 ArgList &Args, 1489 frontend::ActionKind Action) { 1490 using namespace options; 1491 1492 switch (Action) { 1493 case frontend::ASTDeclList: 1494 case frontend::ASTDump: 1495 case frontend::ASTDumpXML: 1496 case frontend::ASTPrint: 1497 case frontend::ASTView: 1498 case frontend::EmitAssembly: 1499 case frontend::EmitBC: 1500 case frontend::EmitHTML: 1501 case frontend::EmitLLVM: 1502 case frontend::EmitLLVMOnly: 1503 case frontend::EmitCodeGenOnly: 1504 case frontend::EmitObj: 1505 case frontend::FixIt: 1506 case frontend::GenerateModule: 1507 case frontend::GeneratePCH: 1508 case frontend::GeneratePTH: 1509 case frontend::ParseSyntaxOnly: 1510 case frontend::ModuleFileInfo: 1511 case frontend::PluginAction: 1512 case frontend::PrintDeclContext: 1513 case frontend::RewriteObjC: 1514 case frontend::RewriteTest: 1515 case frontend::RunAnalysis: 1516 case frontend::MigrateSource: 1517 Opts.ShowCPP = 0; 1518 break; 1519 1520 case frontend::DumpRawTokens: 1521 case frontend::DumpTokens: 1522 case frontend::InitOnly: 1523 case frontend::PrintPreamble: 1524 case frontend::PrintPreprocessedInput: 1525 case frontend::RewriteMacros: 1526 case frontend::RunPreprocessorOnly: 1527 Opts.ShowCPP = !Args.hasArg(OPT_dM); 1528 break; 1529 } 1530 1531 Opts.ShowComments = Args.hasArg(OPT_C); 1532 Opts.ShowLineMarkers = !Args.hasArg(OPT_P); 1533 Opts.ShowMacroComments = Args.hasArg(OPT_CC); 1534 Opts.ShowMacros = Args.hasArg(OPT_dM) || Args.hasArg(OPT_dD); 1535 Opts.RewriteIncludes = Args.hasArg(OPT_frewrite_includes); 1536 } 1537 1538 static void ParseTargetArgs(TargetOptions &Opts, ArgList &Args) { 1539 using namespace options; 1540 Opts.ABI = Args.getLastArgValue(OPT_target_abi); 1541 Opts.CXXABI = Args.getLastArgValue(OPT_cxx_abi); 1542 Opts.CPU = Args.getLastArgValue(OPT_target_cpu); 1543 Opts.FeaturesAsWritten = Args.getAllArgValues(OPT_target_feature); 1544 Opts.LinkerVersion = Args.getLastArgValue(OPT_target_linker_version); 1545 Opts.Triple = llvm::Triple::normalize(Args.getLastArgValue(OPT_triple)); 1546 1547 // Use the default target triple if unspecified. 1548 if (Opts.Triple.empty()) 1549 Opts.Triple = llvm::sys::getDefaultTargetTriple(); 1550 } 1551 1552 // 1553 1554 bool CompilerInvocation::CreateFromArgs(CompilerInvocation &Res, 1555 const char *const *ArgBegin, 1556 const char *const *ArgEnd, 1557 DiagnosticsEngine &Diags) { 1558 bool Success = true; 1559 1560 // Parse the arguments. 1561 OwningPtr<OptTable> Opts(createDriverOptTable()); 1562 const unsigned IncludedFlagsBitmask = options::CC1Option; 1563 unsigned MissingArgIndex, MissingArgCount; 1564 OwningPtr<InputArgList> Args( 1565 Opts->ParseArgs(ArgBegin, ArgEnd, MissingArgIndex, MissingArgCount, 1566 IncludedFlagsBitmask)); 1567 1568 // Check for missing argument error. 1569 if (MissingArgCount) { 1570 Diags.Report(diag::err_drv_missing_argument) 1571 << Args->getArgString(MissingArgIndex) << MissingArgCount; 1572 Success = false; 1573 } 1574 1575 // Issue errors on unknown arguments. 1576 for (arg_iterator it = Args->filtered_begin(OPT_UNKNOWN), 1577 ie = Args->filtered_end(); it != ie; ++it) { 1578 Diags.Report(diag::err_drv_unknown_argument) << (*it)->getAsString(*Args); 1579 Success = false; 1580 } 1581 1582 Success = ParseAnalyzerArgs(*Res.getAnalyzerOpts(), *Args, Diags) && Success; 1583 Success = ParseMigratorArgs(Res.getMigratorOpts(), *Args) && Success; 1584 ParseDependencyOutputArgs(Res.getDependencyOutputOpts(), *Args); 1585 Success = ParseDiagnosticArgs(Res.getDiagnosticOpts(), *Args, &Diags) 1586 && Success; 1587 ParseCommentArgs(Res.getLangOpts()->CommentOpts, *Args); 1588 ParseFileSystemArgs(Res.getFileSystemOpts(), *Args); 1589 // FIXME: We shouldn't have to pass the DashX option around here 1590 InputKind DashX = ParseFrontendArgs(Res.getFrontendOpts(), *Args, Diags); 1591 Success = ParseCodeGenArgs(Res.getCodeGenOpts(), *Args, DashX, Diags) 1592 && Success; 1593 ParseHeaderSearchArgs(Res.getHeaderSearchOpts(), *Args); 1594 if (DashX != IK_AST && DashX != IK_LLVM_IR) { 1595 ParseLangArgs(*Res.getLangOpts(), *Args, DashX, Diags); 1596 if (Res.getFrontendOpts().ProgramAction == frontend::RewriteObjC) 1597 Res.getLangOpts()->ObjCExceptions = 1; 1598 } 1599 // FIXME: ParsePreprocessorArgs uses the FileManager to read the contents of 1600 // PCH file and find the original header name. Remove the need to do that in 1601 // ParsePreprocessorArgs and remove the FileManager 1602 // parameters from the function and the "FileManager.h" #include. 1603 FileManager FileMgr(Res.getFileSystemOpts()); 1604 ParsePreprocessorArgs(Res.getPreprocessorOpts(), *Args, FileMgr, Diags); 1605 ParsePreprocessorOutputArgs(Res.getPreprocessorOutputOpts(), *Args, 1606 Res.getFrontendOpts().ProgramAction); 1607 ParseTargetArgs(Res.getTargetOpts(), *Args); 1608 1609 return Success; 1610 } 1611 1612 namespace { 1613 1614 class ModuleSignature { 1615 SmallVector<uint64_t, 16> Data; 1616 unsigned CurBit; 1617 uint64_t CurValue; 1618 1619 public: 1620 ModuleSignature() : CurBit(0), CurValue(0) { } 1621 1622 void add(uint64_t Value, unsigned Bits); 1623 void add(StringRef Value); 1624 void flush(); 1625 1626 llvm::APInt getAsInteger() const; 1627 }; 1628 } 1629 1630 void ModuleSignature::add(uint64_t Value, unsigned int NumBits) { 1631 CurValue |= Value << CurBit; 1632 if (CurBit + NumBits < 64) { 1633 CurBit += NumBits; 1634 return; 1635 } 1636 1637 // Add the current word. 1638 Data.push_back(CurValue); 1639 1640 if (CurBit) 1641 CurValue = Value >> (64-CurBit); 1642 else 1643 CurValue = 0; 1644 CurBit = (CurBit+NumBits) & 63; 1645 } 1646 1647 void ModuleSignature::flush() { 1648 if (CurBit == 0) 1649 return; 1650 1651 Data.push_back(CurValue); 1652 CurBit = 0; 1653 CurValue = 0; 1654 } 1655 1656 void ModuleSignature::add(StringRef Value) { 1657 for (StringRef::iterator I = Value.begin(), IEnd = Value.end(); I != IEnd;++I) 1658 add(*I, 8); 1659 } 1660 1661 llvm::APInt ModuleSignature::getAsInteger() const { 1662 return llvm::APInt(Data.size() * 64, Data); 1663 } 1664 1665 std::string CompilerInvocation::getModuleHash() const { 1666 // Note: For QoI reasons, the things we use as a hash here should all be 1667 // dumped via the -module-info flag. 1668 using llvm::hash_code; 1669 using llvm::hash_value; 1670 using llvm::hash_combine; 1671 1672 // Start the signature with the compiler version. 1673 // FIXME: We'd rather use something more cryptographically sound than 1674 // CityHash, but this will do for now. 1675 hash_code code = hash_value(getClangFullRepositoryVersion()); 1676 1677 // Extend the signature with the language options 1678 #define LANGOPT(Name, Bits, Default, Description) \ 1679 code = hash_combine(code, LangOpts->Name); 1680 #define ENUM_LANGOPT(Name, Type, Bits, Default, Description) \ 1681 code = hash_combine(code, static_cast<unsigned>(LangOpts->get##Name())); 1682 #define BENIGN_LANGOPT(Name, Bits, Default, Description) 1683 #define BENIGN_ENUM_LANGOPT(Name, Type, Bits, Default, Description) 1684 #include "clang/Basic/LangOptions.def" 1685 1686 // Extend the signature with the target options. 1687 code = hash_combine(code, TargetOpts->Triple, TargetOpts->CPU, 1688 TargetOpts->ABI, TargetOpts->CXXABI, 1689 TargetOpts->LinkerVersion); 1690 for (unsigned i = 0, n = TargetOpts->FeaturesAsWritten.size(); i != n; ++i) 1691 code = hash_combine(code, TargetOpts->FeaturesAsWritten[i]); 1692 1693 // Extend the signature with preprocessor options. 1694 const PreprocessorOptions &ppOpts = getPreprocessorOpts(); 1695 const HeaderSearchOptions &hsOpts = getHeaderSearchOpts(); 1696 code = hash_combine(code, ppOpts.UsePredefines, ppOpts.DetailedRecord); 1697 1698 std::vector<StringRef> MacroDefs; 1699 for (std::vector<std::pair<std::string, bool/*isUndef*/> >::const_iterator 1700 I = getPreprocessorOpts().Macros.begin(), 1701 IEnd = getPreprocessorOpts().Macros.end(); 1702 I != IEnd; ++I) { 1703 // If we're supposed to ignore this macro for the purposes of modules, 1704 // don't put it into the hash. 1705 if (!hsOpts.ModulesIgnoreMacros.empty()) { 1706 // Check whether we're ignoring this macro. 1707 StringRef MacroDef = I->first; 1708 if (hsOpts.ModulesIgnoreMacros.count(MacroDef.split('=').first)) 1709 continue; 1710 } 1711 1712 code = hash_combine(code, I->first, I->second); 1713 } 1714 1715 // Extend the signature with the sysroot. 1716 code = hash_combine(code, hsOpts.Sysroot, hsOpts.UseBuiltinIncludes, 1717 hsOpts.UseStandardSystemIncludes, 1718 hsOpts.UseStandardCXXIncludes, 1719 hsOpts.UseLibcxx); 1720 1721 // Darwin-specific hack: if we have a sysroot, use the contents and 1722 // modification time of 1723 // $sysroot/System/Library/CoreServices/SystemVersion.plist 1724 // as part of the module hash. 1725 if (!hsOpts.Sysroot.empty()) { 1726 llvm::OwningPtr<llvm::MemoryBuffer> buffer; 1727 SmallString<128> systemVersionFile; 1728 systemVersionFile += hsOpts.Sysroot; 1729 llvm::sys::path::append(systemVersionFile, "System"); 1730 llvm::sys::path::append(systemVersionFile, "Library"); 1731 llvm::sys::path::append(systemVersionFile, "CoreServices"); 1732 llvm::sys::path::append(systemVersionFile, "SystemVersion.plist"); 1733 if (!llvm::MemoryBuffer::getFile(systemVersionFile, buffer)) { 1734 code = hash_combine(code, buffer.get()->getBuffer()); 1735 1736 struct stat statBuf; 1737 if (stat(systemVersionFile.c_str(), &statBuf) == 0) 1738 code = hash_combine(code, statBuf.st_mtime); 1739 } 1740 } 1741 1742 return llvm::APInt(64, code).toString(36, /*Signed=*/false); 1743 } 1744 1745 namespace clang { 1746 1747 // Declared in clang/Frontend/Utils.h. 1748 int getLastArgIntValue(const ArgList &Args, OptSpecifier Id, int Default, 1749 DiagnosticsEngine *Diags) { 1750 int Res = Default; 1751 if (Arg *A = Args.getLastArg(Id)) { 1752 if (StringRef(A->getValue()).getAsInteger(10, Res)) { 1753 if (Diags) 1754 Diags->Report(diag::err_drv_invalid_int_value) << A->getAsString(Args) 1755 << A->getValue(); 1756 } 1757 } 1758 return Res; 1759 } 1760 } 1761