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