1 //===--- CompilerInvocation.cpp -------------------------------------------===// 2 // 3 // The LLVM Compiler Infrastructure 4 // 5 // This file is distributed under the University of Illinois Open Source 6 // License. See LICENSE.TXT for details. 7 // 8 //===----------------------------------------------------------------------===// 9 10 #include "clang/Frontend/CompilerInvocation.h" 11 #include "clang/Basic/Diagnostic.h" 12 #include "clang/Basic/FileManager.h" 13 #include "clang/Basic/Version.h" 14 #include "clang/Driver/DriverDiagnostic.h" 15 #include "clang/Driver/Options.h" 16 #include "clang/Driver/Util.h" 17 #include "clang/Frontend/LangStandard.h" 18 #include "clang/Frontend/Utils.h" 19 #include "clang/Lex/HeaderSearchOptions.h" 20 #include "clang/Serialization/ASTReader.h" 21 #include "llvm/ADT/Hashing.h" 22 #include "llvm/ADT/OwningPtr.h" 23 #include "llvm/ADT/SmallVector.h" 24 #include "llvm/ADT/StringExtras.h" 25 #include "llvm/ADT/StringSwitch.h" 26 #include "llvm/ADT/Triple.h" 27 #include "llvm/Option/Arg.h" 28 #include "llvm/Option/ArgList.h" 29 #include "llvm/Option/OptTable.h" 30 #include "llvm/Option/Option.h" 31 #include "llvm/Support/ErrorHandling.h" 32 #include "llvm/Support/Host.h" 33 #include "llvm/Support/Path.h" 34 #include "llvm/Support/PathV1.h" 35 #include "llvm/Support/system_error.h" 36 #include <sys/stat.h> 37 using namespace clang; 38 39 //===----------------------------------------------------------------------===// 40 // Initialization. 41 //===----------------------------------------------------------------------===// 42 43 CompilerInvocationBase::CompilerInvocationBase() 44 : LangOpts(new LangOptions()), TargetOpts(new TargetOptions()), 45 DiagnosticOpts(new DiagnosticOptions()), 46 HeaderSearchOpts(new HeaderSearchOptions()), 47 PreprocessorOpts(new PreprocessorOptions()) {} 48 49 CompilerInvocationBase::CompilerInvocationBase(const CompilerInvocationBase &X) 50 : RefCountedBase<CompilerInvocation>(), 51 LangOpts(new LangOptions(*X.getLangOpts())), 52 TargetOpts(new TargetOptions(X.getTargetOpts())), 53 DiagnosticOpts(new DiagnosticOptions(X.getDiagnosticOpts())), 54 HeaderSearchOpts(new HeaderSearchOptions(X.getHeaderSearchOpts())), 55 PreprocessorOpts(new PreprocessorOptions(X.getPreprocessorOpts())) {} 56 57 //===----------------------------------------------------------------------===// 58 // Deserialization (from args) 59 //===----------------------------------------------------------------------===// 60 61 using namespace clang::driver; 62 using namespace clang::driver::options; 63 using namespace llvm::opt; 64 65 // 66 67 static unsigned getOptimizationLevel(ArgList &Args, InputKind IK, 68 DiagnosticsEngine &Diags) { 69 unsigned DefaultOpt = 0; 70 if (IK == IK_OpenCL && !Args.hasArg(OPT_cl_opt_disable)) 71 DefaultOpt = 2; 72 73 if (Arg *A = Args.getLastArg(options::OPT_O_Group)) { 74 if (A->getOption().matches(options::OPT_O0)) 75 return 0; 76 77 if (A->getOption().matches(options::OPT_Ofast)) 78 return 3; 79 80 assert (A->getOption().matches(options::OPT_O)); 81 82 StringRef S(A->getValue()); 83 if (S == "s" || S == "z" || S.empty()) 84 return 2; 85 86 return getLastArgIntValue(Args, OPT_O, DefaultOpt, Diags); 87 } 88 89 return DefaultOpt; 90 } 91 92 static unsigned getOptimizationLevelSize(ArgList &Args) { 93 if (Arg *A = Args.getLastArg(options::OPT_O_Group)) { 94 if (A->getOption().matches(options::OPT_O)) { 95 switch (A->getValue()[0]) { 96 default: 97 return 0; 98 case 's': 99 return 1; 100 case 'z': 101 return 2; 102 } 103 } 104 } 105 return 0; 106 } 107 108 static void addWarningArgs(ArgList &Args, std::vector<std::string> &Warnings) { 109 for (arg_iterator I = Args.filtered_begin(OPT_W_Group), 110 E = Args.filtered_end(); I != E; ++I) { 111 Arg *A = *I; 112 // If the argument is a pure flag, add its name (minus the "W" at the beginning) 113 // to the warning list. Else, add its value (for the OPT_W case). 114 if (A->getOption().getKind() == Option::FlagClass) { 115 Warnings.push_back(A->getOption().getName().substr(1)); 116 } else { 117 for (unsigned Idx = 0, End = A->getNumValues(); 118 Idx < End; ++Idx) { 119 StringRef V = A->getValue(Idx); 120 // "-Wl," and such are not warning options. 121 // FIXME: Should be handled by putting these in separate flags. 122 if (V.startswith("l,") || V.startswith("a,") || V.startswith("p,")) 123 continue; 124 125 Warnings.push_back(V); 126 } 127 } 128 } 129 } 130 131 static bool ParseAnalyzerArgs(AnalyzerOptions &Opts, ArgList &Args, 132 DiagnosticsEngine &Diags) { 133 using namespace options; 134 bool Success = true; 135 if (Arg *A = Args.getLastArg(OPT_analyzer_store)) { 136 StringRef Name = A->getValue(); 137 AnalysisStores Value = llvm::StringSwitch<AnalysisStores>(Name) 138 #define ANALYSIS_STORE(NAME, CMDFLAG, DESC, CREATFN) \ 139 .Case(CMDFLAG, NAME##Model) 140 #include "clang/StaticAnalyzer/Core/Analyses.def" 141 .Default(NumStores); 142 if (Value == NumStores) { 143 Diags.Report(diag::err_drv_invalid_value) 144 << A->getAsString(Args) << Name; 145 Success = false; 146 } else { 147 Opts.AnalysisStoreOpt = Value; 148 } 149 } 150 151 if (Arg *A = Args.getLastArg(OPT_analyzer_constraints)) { 152 StringRef Name = A->getValue(); 153 AnalysisConstraints Value = llvm::StringSwitch<AnalysisConstraints>(Name) 154 #define ANALYSIS_CONSTRAINTS(NAME, CMDFLAG, DESC, CREATFN) \ 155 .Case(CMDFLAG, NAME##Model) 156 #include "clang/StaticAnalyzer/Core/Analyses.def" 157 .Default(NumConstraints); 158 if (Value == NumConstraints) { 159 Diags.Report(diag::err_drv_invalid_value) 160 << A->getAsString(Args) << Name; 161 Success = false; 162 } else { 163 Opts.AnalysisConstraintsOpt = Value; 164 } 165 } 166 167 if (Arg *A = Args.getLastArg(OPT_analyzer_output)) { 168 StringRef Name = A->getValue(); 169 AnalysisDiagClients Value = llvm::StringSwitch<AnalysisDiagClients>(Name) 170 #define ANALYSIS_DIAGNOSTICS(NAME, CMDFLAG, DESC, CREATFN, AUTOCREAT) \ 171 .Case(CMDFLAG, PD_##NAME) 172 #include "clang/StaticAnalyzer/Core/Analyses.def" 173 .Default(NUM_ANALYSIS_DIAG_CLIENTS); 174 if (Value == NUM_ANALYSIS_DIAG_CLIENTS) { 175 Diags.Report(diag::err_drv_invalid_value) 176 << A->getAsString(Args) << Name; 177 Success = false; 178 } else { 179 Opts.AnalysisDiagOpt = Value; 180 } 181 } 182 183 if (Arg *A = Args.getLastArg(OPT_analyzer_purge)) { 184 StringRef Name = A->getValue(); 185 AnalysisPurgeMode Value = llvm::StringSwitch<AnalysisPurgeMode>(Name) 186 #define ANALYSIS_PURGE(NAME, CMDFLAG, DESC) \ 187 .Case(CMDFLAG, NAME) 188 #include "clang/StaticAnalyzer/Core/Analyses.def" 189 .Default(NumPurgeModes); 190 if (Value == NumPurgeModes) { 191 Diags.Report(diag::err_drv_invalid_value) 192 << A->getAsString(Args) << Name; 193 Success = false; 194 } else { 195 Opts.AnalysisPurgeOpt = Value; 196 } 197 } 198 199 if (Arg *A = Args.getLastArg(OPT_analyzer_inlining_mode)) { 200 StringRef Name = A->getValue(); 201 AnalysisInliningMode Value = llvm::StringSwitch<AnalysisInliningMode>(Name) 202 #define ANALYSIS_INLINING_MODE(NAME, CMDFLAG, DESC) \ 203 .Case(CMDFLAG, NAME) 204 #include "clang/StaticAnalyzer/Core/Analyses.def" 205 .Default(NumInliningModes); 206 if (Value == NumInliningModes) { 207 Diags.Report(diag::err_drv_invalid_value) 208 << A->getAsString(Args) << Name; 209 Success = false; 210 } else { 211 Opts.InliningMode = Value; 212 } 213 } 214 215 Opts.ShowCheckerHelp = Args.hasArg(OPT_analyzer_checker_help); 216 Opts.visualizeExplodedGraphWithGraphViz = 217 Args.hasArg(OPT_analyzer_viz_egraph_graphviz); 218 Opts.visualizeExplodedGraphWithUbiGraph = 219 Args.hasArg(OPT_analyzer_viz_egraph_ubigraph); 220 Opts.NoRetryExhausted = Args.hasArg(OPT_analyzer_disable_retry_exhausted); 221 Opts.AnalyzeAll = Args.hasArg(OPT_analyzer_opt_analyze_headers); 222 Opts.AnalyzerDisplayProgress = Args.hasArg(OPT_analyzer_display_progress); 223 Opts.AnalyzeNestedBlocks = 224 Args.hasArg(OPT_analyzer_opt_analyze_nested_blocks); 225 Opts.eagerlyAssumeBinOpBifurcation = Args.hasArg(OPT_analyzer_eagerly_assume); 226 Opts.AnalyzeSpecificFunction = Args.getLastArgValue(OPT_analyze_function); 227 Opts.UnoptimizedCFG = Args.hasArg(OPT_analysis_UnoptimizedCFG); 228 Opts.TrimGraph = Args.hasArg(OPT_trim_egraph); 229 Opts.maxBlockVisitOnPath = 230 getLastArgIntValue(Args, OPT_analyzer_max_loop, 4, Diags); 231 Opts.PrintStats = Args.hasArg(OPT_analyzer_stats); 232 Opts.InlineMaxStackDepth = 233 getLastArgIntValue(Args, OPT_analyzer_inline_max_stack_depth, 234 Opts.InlineMaxStackDepth, Diags); 235 236 Opts.CheckersControlList.clear(); 237 for (arg_iterator it = Args.filtered_begin(OPT_analyzer_checker, 238 OPT_analyzer_disable_checker), 239 ie = Args.filtered_end(); it != ie; ++it) { 240 const Arg *A = *it; 241 A->claim(); 242 bool enable = (A->getOption().getID() == OPT_analyzer_checker); 243 // We can have a list of comma separated checker names, e.g: 244 // '-analyzer-checker=cocoa,unix' 245 StringRef checkerList = A->getValue(); 246 SmallVector<StringRef, 4> checkers; 247 checkerList.split(checkers, ","); 248 for (unsigned i = 0, e = checkers.size(); i != e; ++i) 249 Opts.CheckersControlList.push_back(std::make_pair(checkers[i], enable)); 250 } 251 252 // Go through the analyzer configuration options. 253 for (arg_iterator it = Args.filtered_begin(OPT_analyzer_config), 254 ie = Args.filtered_end(); it != ie; ++it) { 255 const Arg *A = *it; 256 A->claim(); 257 // We can have a list of comma separated config names, e.g: 258 // '-analyzer-config key1=val1,key2=val2' 259 StringRef configList = A->getValue(); 260 SmallVector<StringRef, 4> configVals; 261 configList.split(configVals, ","); 262 for (unsigned i = 0, e = configVals.size(); i != e; ++i) { 263 StringRef key, val; 264 llvm::tie(key, val) = configVals[i].split("="); 265 if (val.empty()) { 266 Diags.Report(SourceLocation(), 267 diag::err_analyzer_config_no_value) << configVals[i]; 268 Success = false; 269 break; 270 } 271 if (val.find('=') != StringRef::npos) { 272 Diags.Report(SourceLocation(), 273 diag::err_analyzer_config_multiple_values) 274 << configVals[i]; 275 Success = false; 276 break; 277 } 278 Opts.Config[key] = val; 279 } 280 } 281 282 return Success; 283 } 284 285 static bool ParseMigratorArgs(MigratorOptions &Opts, ArgList &Args) { 286 Opts.NoNSAllocReallocError = Args.hasArg(OPT_migrator_no_nsalloc_error); 287 Opts.NoFinalizeRemoval = Args.hasArg(OPT_migrator_no_finalize_removal); 288 return true; 289 } 290 291 static void ParseCommentArgs(CommentOptions &Opts, ArgList &Args) { 292 Opts.BlockCommandNames = Args.getAllArgValues(OPT_fcomment_block_commands); 293 Opts.ParseAllComments = Args.hasArg(OPT_fparse_all_comments); 294 } 295 296 static bool ParseCodeGenArgs(CodeGenOptions &Opts, ArgList &Args, InputKind IK, 297 DiagnosticsEngine &Diags) { 298 using namespace options; 299 bool Success = true; 300 301 unsigned OptLevel = getOptimizationLevel(Args, IK, Diags); 302 if (OptLevel > 3) { 303 Diags.Report(diag::err_drv_invalid_value) 304 << Args.getLastArg(OPT_O)->getAsString(Args) << OptLevel; 305 OptLevel = 3; 306 Success = false; 307 } 308 Opts.OptimizationLevel = OptLevel; 309 310 // We must always run at least the always inlining pass. 311 Opts.setInlining( 312 (Opts.OptimizationLevel > 1) ? CodeGenOptions::NormalInlining 313 : CodeGenOptions::OnlyAlwaysInlining); 314 // -fno-inline-functions overrides OptimizationLevel > 1. 315 Opts.NoInline = Args.hasArg(OPT_fno_inline); 316 Opts.setInlining(Args.hasArg(OPT_fno_inline_functions) ? 317 CodeGenOptions::OnlyAlwaysInlining : Opts.getInlining()); 318 319 if (Args.hasArg(OPT_gline_tables_only)) { 320 Opts.setDebugInfo(CodeGenOptions::DebugLineTablesOnly); 321 } else if (Args.hasArg(OPT_g_Flag) || 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.MainFileName = Args.getLastArgValue(OPT_main_file_name); 403 Opts.VerifyModule = !Args.hasArg(OPT_disable_llvm_verifier); 404 Opts.SanitizeRecover = !Args.hasArg(OPT_fno_sanitize_recover); 405 406 Opts.DisableGCov = Args.hasArg(OPT_test_coverage); 407 Opts.EmitGcovArcs = Args.hasArg(OPT_femit_coverage_data); 408 Opts.EmitGcovNotes = Args.hasArg(OPT_femit_coverage_notes); 409 if (Opts.EmitGcovArcs || Opts.EmitGcovNotes) { 410 Opts.CoverageFile = Args.getLastArgValue(OPT_coverage_file); 411 Opts.CoverageExtraChecksum = Args.hasArg(OPT_coverage_cfg_checksum); 412 Opts.CoverageNoFunctionNamesInData = 413 Args.hasArg(OPT_coverage_no_function_names_in_data); 414 if (Args.hasArg(OPT_coverage_version_EQ)) { 415 StringRef CoverageVersion = Args.getLastArgValue(OPT_coverage_version_EQ); 416 if (CoverageVersion.size() != 4) { 417 Diags.Report(diag::err_drv_invalid_value) 418 << Args.getLastArg(OPT_coverage_version_EQ)->getAsString(Args) 419 << CoverageVersion; 420 } else { 421 memcpy(Opts.CoverageVersion, CoverageVersion.data(), 4); 422 } 423 } 424 } 425 426 Opts.InstrumentFunctions = Args.hasArg(OPT_finstrument_functions); 427 Opts.InstrumentForProfiling = Args.hasArg(OPT_pg); 428 Opts.EmitOpenCLArgMetadata = Args.hasArg(OPT_cl_kernel_arg_info); 429 Opts.DebugCompilationDir = Args.getLastArgValue(OPT_fdebug_compilation_dir); 430 Opts.LinkBitcodeFile = Args.getLastArgValue(OPT_mlink_bitcode_file); 431 Opts.SanitizerBlacklistFile = Args.getLastArgValue(OPT_fsanitize_blacklist); 432 Opts.SanitizeMemoryTrackOrigins = 433 Args.hasArg(OPT_fsanitize_memory_track_origins); 434 Opts.SanitizeAddressZeroBaseShadow = 435 Args.hasArg(OPT_fsanitize_address_zero_base_shadow); 436 Opts.SanitizeUndefinedTrapOnError = 437 Args.hasArg(OPT_fsanitize_undefined_trap_on_error); 438 Opts.SSPBufferSize = 439 getLastArgIntValue(Args, OPT_stack_protector_buffer_size, 8, Diags); 440 Opts.StackRealignment = Args.hasArg(OPT_mstackrealign); 441 if (Arg *A = Args.getLastArg(OPT_mstack_alignment)) { 442 StringRef Val = A->getValue(); 443 unsigned StackAlignment = Opts.StackAlignment; 444 Val.getAsInteger(10, StackAlignment); 445 Opts.StackAlignment = StackAlignment; 446 } 447 448 if (Arg *A = Args.getLastArg(OPT_fobjc_dispatch_method_EQ)) { 449 StringRef Name = A->getValue(); 450 unsigned Method = llvm::StringSwitch<unsigned>(Name) 451 .Case("legacy", CodeGenOptions::Legacy) 452 .Case("non-legacy", CodeGenOptions::NonLegacy) 453 .Case("mixed", CodeGenOptions::Mixed) 454 .Default(~0U); 455 if (Method == ~0U) { 456 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Name; 457 Success = false; 458 } else { 459 Opts.setObjCDispatchMethod( 460 static_cast<CodeGenOptions::ObjCDispatchMethodKind>(Method)); 461 } 462 } 463 464 if (Arg *A = Args.getLastArg(OPT_ftlsmodel_EQ)) { 465 StringRef Name = A->getValue(); 466 unsigned Model = llvm::StringSwitch<unsigned>(Name) 467 .Case("global-dynamic", CodeGenOptions::GeneralDynamicTLSModel) 468 .Case("local-dynamic", CodeGenOptions::LocalDynamicTLSModel) 469 .Case("initial-exec", CodeGenOptions::InitialExecTLSModel) 470 .Case("local-exec", CodeGenOptions::LocalExecTLSModel) 471 .Default(~0U); 472 if (Model == ~0U) { 473 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Name; 474 Success = false; 475 } else { 476 Opts.setDefaultTLSModel(static_cast<CodeGenOptions::TLSModel>(Model)); 477 } 478 } 479 480 if (Arg *A = Args.getLastArg(OPT_ffp_contract)) { 481 StringRef Val = A->getValue(); 482 if (Val == "fast") 483 Opts.setFPContractMode(CodeGenOptions::FPC_Fast); 484 else if (Val == "on") 485 Opts.setFPContractMode(CodeGenOptions::FPC_On); 486 else if (Val == "off") 487 Opts.setFPContractMode(CodeGenOptions::FPC_Off); 488 else 489 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Val; 490 } 491 492 if (Arg *A = Args.getLastArg(OPT_fpcc_struct_return, OPT_freg_struct_return)) { 493 if (A->getOption().matches(OPT_fpcc_struct_return)) { 494 Opts.setStructReturnConvention(CodeGenOptions::SRCK_OnStack); 495 } else { 496 assert(A->getOption().matches(OPT_freg_struct_return)); 497 Opts.setStructReturnConvention(CodeGenOptions::SRCK_InRegs); 498 } 499 } 500 501 return Success; 502 } 503 504 static void ParseDependencyOutputArgs(DependencyOutputOptions &Opts, 505 ArgList &Args) { 506 using namespace options; 507 Opts.OutputFile = Args.getLastArgValue(OPT_dependency_file); 508 Opts.Targets = Args.getAllArgValues(OPT_MT); 509 Opts.IncludeSystemHeaders = Args.hasArg(OPT_sys_header_deps); 510 Opts.UsePhonyTargets = Args.hasArg(OPT_MP); 511 Opts.ShowHeaderIncludes = Args.hasArg(OPT_H); 512 Opts.HeaderIncludeOutputFile = Args.getLastArgValue(OPT_header_include_file); 513 Opts.AddMissingHeaderDeps = Args.hasArg(OPT_MG); 514 Opts.DOTOutputFile = Args.getLastArgValue(OPT_dependency_dot); 515 } 516 517 bool clang::ParseDiagnosticArgs(DiagnosticOptions &Opts, ArgList &Args, 518 DiagnosticsEngine *Diags) { 519 using namespace options; 520 bool Success = true; 521 522 Opts.DiagnosticLogFile = Args.getLastArgValue(OPT_diagnostic_log_file); 523 Opts.DiagnosticSerializationFile = 524 Args.getLastArgValue(OPT_diagnostic_serialized_file); 525 Opts.IgnoreWarnings = Args.hasArg(OPT_w); 526 Opts.NoRewriteMacros = Args.hasArg(OPT_Wno_rewrite_macros); 527 Opts.Pedantic = Args.hasArg(OPT_pedantic); 528 Opts.PedanticErrors = Args.hasArg(OPT_pedantic_errors); 529 Opts.ShowCarets = !Args.hasArg(OPT_fno_caret_diagnostics); 530 Opts.ShowColors = Args.hasArg(OPT_fcolor_diagnostics); 531 Opts.ShowColumn = Args.hasFlag(OPT_fshow_column, 532 OPT_fno_show_column, 533 /*Default=*/true); 534 Opts.ShowFixits = !Args.hasArg(OPT_fno_diagnostics_fixit_info); 535 Opts.ShowLocation = !Args.hasArg(OPT_fno_show_source_location); 536 Opts.ShowOptionNames = Args.hasArg(OPT_fdiagnostics_show_option); 537 538 // Default behavior is to not to show note include stacks. 539 Opts.ShowNoteIncludeStack = false; 540 if (Arg *A = Args.getLastArg(OPT_fdiagnostics_show_note_include_stack, 541 OPT_fno_diagnostics_show_note_include_stack)) 542 if (A->getOption().matches(OPT_fdiagnostics_show_note_include_stack)) 543 Opts.ShowNoteIncludeStack = true; 544 545 StringRef ShowOverloads = 546 Args.getLastArgValue(OPT_fshow_overloads_EQ, "all"); 547 if (ShowOverloads == "best") 548 Opts.setShowOverloads(Ovl_Best); 549 else if (ShowOverloads == "all") 550 Opts.setShowOverloads(Ovl_All); 551 else { 552 Success = false; 553 if (Diags) 554 Diags->Report(diag::err_drv_invalid_value) 555 << Args.getLastArg(OPT_fshow_overloads_EQ)->getAsString(Args) 556 << ShowOverloads; 557 } 558 559 StringRef ShowCategory = 560 Args.getLastArgValue(OPT_fdiagnostics_show_category, "none"); 561 if (ShowCategory == "none") 562 Opts.ShowCategories = 0; 563 else if (ShowCategory == "id") 564 Opts.ShowCategories = 1; 565 else if (ShowCategory == "name") 566 Opts.ShowCategories = 2; 567 else { 568 Success = false; 569 if (Diags) 570 Diags->Report(diag::err_drv_invalid_value) 571 << Args.getLastArg(OPT_fdiagnostics_show_category)->getAsString(Args) 572 << ShowCategory; 573 } 574 575 StringRef Format = 576 Args.getLastArgValue(OPT_fdiagnostics_format, "clang"); 577 if (Format == "clang") 578 Opts.setFormat(DiagnosticOptions::Clang); 579 else if (Format == "msvc") 580 Opts.setFormat(DiagnosticOptions::Msvc); 581 else if (Format == "vi") 582 Opts.setFormat(DiagnosticOptions::Vi); 583 else { 584 Success = false; 585 if (Diags) 586 Diags->Report(diag::err_drv_invalid_value) 587 << Args.getLastArg(OPT_fdiagnostics_format)->getAsString(Args) 588 << Format; 589 } 590 591 Opts.ShowSourceRanges = Args.hasArg(OPT_fdiagnostics_print_source_range_info); 592 Opts.ShowParseableFixits = Args.hasArg(OPT_fdiagnostics_parseable_fixits); 593 Opts.ShowPresumedLoc = !Args.hasArg(OPT_fno_diagnostics_use_presumed_location); 594 Opts.VerifyDiagnostics = Args.hasArg(OPT_verify); 595 Opts.ElideType = !Args.hasArg(OPT_fno_elide_type); 596 Opts.ShowTemplateTree = Args.hasArg(OPT_fdiagnostics_show_template_tree); 597 Opts.ErrorLimit = getLastArgIntValue(Args, OPT_ferror_limit, 0, Diags); 598 Opts.MacroBacktraceLimit = 599 getLastArgIntValue(Args, OPT_fmacro_backtrace_limit, 600 DiagnosticOptions::DefaultMacroBacktraceLimit, Diags); 601 Opts.TemplateBacktraceLimit = getLastArgIntValue( 602 Args, OPT_ftemplate_backtrace_limit, 603 DiagnosticOptions::DefaultTemplateBacktraceLimit, Diags); 604 Opts.ConstexprBacktraceLimit = getLastArgIntValue( 605 Args, OPT_fconstexpr_backtrace_limit, 606 DiagnosticOptions::DefaultConstexprBacktraceLimit, Diags); 607 Opts.TabStop = getLastArgIntValue(Args, OPT_ftabstop, 608 DiagnosticOptions::DefaultTabStop, Diags); 609 if (Opts.TabStop == 0 || Opts.TabStop > DiagnosticOptions::MaxTabStop) { 610 Opts.TabStop = DiagnosticOptions::DefaultTabStop; 611 if (Diags) 612 Diags->Report(diag::warn_ignoring_ftabstop_value) 613 << Opts.TabStop << DiagnosticOptions::DefaultTabStop; 614 } 615 Opts.MessageLength = getLastArgIntValue(Args, OPT_fmessage_length, 0, Diags); 616 addWarningArgs(Args, Opts.Warnings); 617 618 return Success; 619 } 620 621 static void ParseFileSystemArgs(FileSystemOptions &Opts, ArgList &Args) { 622 Opts.WorkingDir = Args.getLastArgValue(OPT_working_directory); 623 } 624 625 static InputKind ParseFrontendArgs(FrontendOptions &Opts, ArgList &Args, 626 DiagnosticsEngine &Diags) { 627 using namespace options; 628 Opts.ProgramAction = frontend::ParseSyntaxOnly; 629 if (const Arg *A = Args.getLastArg(OPT_Action_Group)) { 630 switch (A->getOption().getID()) { 631 default: 632 llvm_unreachable("Invalid option in group!"); 633 case OPT_ast_list: 634 Opts.ProgramAction = frontend::ASTDeclList; break; 635 case OPT_ast_dump: 636 Opts.ProgramAction = frontend::ASTDump; break; 637 case OPT_ast_dump_xml: 638 Opts.ProgramAction = frontend::ASTDumpXML; break; 639 case OPT_ast_print: 640 Opts.ProgramAction = frontend::ASTPrint; break; 641 case OPT_ast_view: 642 Opts.ProgramAction = frontend::ASTView; break; 643 case OPT_dump_raw_tokens: 644 Opts.ProgramAction = frontend::DumpRawTokens; break; 645 case OPT_dump_tokens: 646 Opts.ProgramAction = frontend::DumpTokens; break; 647 case OPT_S: 648 Opts.ProgramAction = frontend::EmitAssembly; break; 649 case OPT_emit_llvm_bc: 650 Opts.ProgramAction = frontend::EmitBC; break; 651 case OPT_emit_html: 652 Opts.ProgramAction = frontend::EmitHTML; break; 653 case OPT_emit_llvm: 654 Opts.ProgramAction = frontend::EmitLLVM; break; 655 case OPT_emit_llvm_only: 656 Opts.ProgramAction = frontend::EmitLLVMOnly; break; 657 case OPT_emit_codegen_only: 658 Opts.ProgramAction = frontend::EmitCodeGenOnly; break; 659 case OPT_emit_obj: 660 Opts.ProgramAction = frontend::EmitObj; break; 661 case OPT_fixit_EQ: 662 Opts.FixItSuffix = A->getValue(); 663 // fall-through! 664 case OPT_fixit: 665 Opts.ProgramAction = frontend::FixIt; break; 666 case OPT_emit_module: 667 Opts.ProgramAction = frontend::GenerateModule; break; 668 case OPT_emit_pch: 669 Opts.ProgramAction = frontend::GeneratePCH; break; 670 case OPT_emit_pth: 671 Opts.ProgramAction = frontend::GeneratePTH; break; 672 case OPT_init_only: 673 Opts.ProgramAction = frontend::InitOnly; break; 674 case OPT_fsyntax_only: 675 Opts.ProgramAction = frontend::ParseSyntaxOnly; break; 676 case OPT_module_file_info: 677 Opts.ProgramAction = frontend::ModuleFileInfo; break; 678 case OPT_print_decl_contexts: 679 Opts.ProgramAction = frontend::PrintDeclContext; break; 680 case OPT_print_preamble: 681 Opts.ProgramAction = frontend::PrintPreamble; break; 682 case OPT_E: 683 Opts.ProgramAction = frontend::PrintPreprocessedInput; break; 684 case OPT_rewrite_macros: 685 Opts.ProgramAction = frontend::RewriteMacros; break; 686 case OPT_rewrite_objc: 687 Opts.ProgramAction = frontend::RewriteObjC; break; 688 case OPT_rewrite_test: 689 Opts.ProgramAction = frontend::RewriteTest; break; 690 case OPT_analyze: 691 Opts.ProgramAction = frontend::RunAnalysis; break; 692 case OPT_migrate: 693 Opts.ProgramAction = frontend::MigrateSource; break; 694 case OPT_Eonly: 695 Opts.ProgramAction = frontend::RunPreprocessorOnly; break; 696 } 697 } 698 699 if (const Arg* A = Args.getLastArg(OPT_plugin)) { 700 Opts.Plugins.push_back(A->getValue(0)); 701 Opts.ProgramAction = frontend::PluginAction; 702 Opts.ActionName = A->getValue(); 703 704 for (arg_iterator it = Args.filtered_begin(OPT_plugin_arg), 705 end = Args.filtered_end(); it != end; ++it) { 706 if ((*it)->getValue(0) == Opts.ActionName) 707 Opts.PluginArgs.push_back((*it)->getValue(1)); 708 } 709 } 710 711 Opts.AddPluginActions = Args.getAllArgValues(OPT_add_plugin); 712 Opts.AddPluginArgs.resize(Opts.AddPluginActions.size()); 713 for (int i = 0, e = Opts.AddPluginActions.size(); i != e; ++i) { 714 for (arg_iterator it = Args.filtered_begin(OPT_plugin_arg), 715 end = Args.filtered_end(); it != end; ++it) { 716 if ((*it)->getValue(0) == Opts.AddPluginActions[i]) 717 Opts.AddPluginArgs[i].push_back((*it)->getValue(1)); 718 } 719 } 720 721 if (const Arg *A = Args.getLastArg(OPT_code_completion_at)) { 722 Opts.CodeCompletionAt = 723 ParsedSourceLocation::FromString(A->getValue()); 724 if (Opts.CodeCompletionAt.FileName.empty()) 725 Diags.Report(diag::err_drv_invalid_value) 726 << A->getAsString(Args) << A->getValue(); 727 } 728 Opts.DisableFree = Args.hasArg(OPT_disable_free); 729 730 Opts.OutputFile = Args.getLastArgValue(OPT_o); 731 Opts.Plugins = Args.getAllArgValues(OPT_load); 732 Opts.RelocatablePCH = Args.hasArg(OPT_relocatable_pch); 733 Opts.ShowHelp = Args.hasArg(OPT_help); 734 Opts.ShowStats = Args.hasArg(OPT_print_stats); 735 Opts.ShowTimers = Args.hasArg(OPT_ftime_report); 736 Opts.ShowVersion = Args.hasArg(OPT_version); 737 Opts.ASTMergeFiles = Args.getAllArgValues(OPT_ast_merge); 738 Opts.LLVMArgs = Args.getAllArgValues(OPT_mllvm); 739 Opts.FixWhatYouCan = Args.hasArg(OPT_fix_what_you_can); 740 Opts.FixOnlyWarnings = Args.hasArg(OPT_fix_only_warnings); 741 Opts.FixAndRecompile = Args.hasArg(OPT_fixit_recompile); 742 Opts.FixToTemporaries = Args.hasArg(OPT_fixit_to_temp); 743 Opts.ASTDumpFilter = Args.getLastArgValue(OPT_ast_dump_filter); 744 Opts.UseGlobalModuleIndex = !Args.hasArg(OPT_fno_modules_global_index); 745 Opts.GenerateGlobalModuleIndex = Opts.UseGlobalModuleIndex; 746 747 Opts.CodeCompleteOpts.IncludeMacros 748 = Args.hasArg(OPT_code_completion_macros); 749 Opts.CodeCompleteOpts.IncludeCodePatterns 750 = Args.hasArg(OPT_code_completion_patterns); 751 Opts.CodeCompleteOpts.IncludeGlobals 752 = !Args.hasArg(OPT_no_code_completion_globals); 753 Opts.CodeCompleteOpts.IncludeBriefComments 754 = Args.hasArg(OPT_code_completion_brief_comments); 755 756 Opts.OverrideRecordLayoutsFile 757 = Args.getLastArgValue(OPT_foverride_record_layout_EQ); 758 if (const Arg *A = Args.getLastArg(OPT_arcmt_check, 759 OPT_arcmt_modify, 760 OPT_arcmt_migrate)) { 761 switch (A->getOption().getID()) { 762 default: 763 llvm_unreachable("missed a case"); 764 case OPT_arcmt_check: 765 Opts.ARCMTAction = FrontendOptions::ARCMT_Check; 766 break; 767 case OPT_arcmt_modify: 768 Opts.ARCMTAction = FrontendOptions::ARCMT_Modify; 769 break; 770 case OPT_arcmt_migrate: 771 Opts.ARCMTAction = FrontendOptions::ARCMT_Migrate; 772 break; 773 } 774 } 775 Opts.MTMigrateDir = Args.getLastArgValue(OPT_mt_migrate_directory); 776 Opts.ARCMTMigrateReportOut 777 = Args.getLastArgValue(OPT_arcmt_migrate_report_output); 778 Opts.ARCMTMigrateEmitARCErrors 779 = Args.hasArg(OPT_arcmt_migrate_emit_arc_errors); 780 781 if (Args.hasArg(OPT_objcmt_migrate_literals)) 782 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_Literals; 783 if (Args.hasArg(OPT_objcmt_migrate_subscripting)) 784 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_Subscripting; 785 786 if (Opts.ARCMTAction != FrontendOptions::ARCMT_None && 787 Opts.ObjCMTAction != FrontendOptions::ObjCMT_None) { 788 Diags.Report(diag::err_drv_argument_not_allowed_with) 789 << "ARC migration" << "ObjC migration"; 790 } 791 792 InputKind DashX = IK_None; 793 if (const Arg *A = Args.getLastArg(OPT_x)) { 794 DashX = llvm::StringSwitch<InputKind>(A->getValue()) 795 .Case("c", IK_C) 796 .Case("cl", IK_OpenCL) 797 .Case("cuda", IK_CUDA) 798 .Case("c++", IK_CXX) 799 .Case("objective-c", IK_ObjC) 800 .Case("objective-c++", IK_ObjCXX) 801 .Case("cpp-output", IK_PreprocessedC) 802 .Case("assembler-with-cpp", IK_Asm) 803 .Case("c++-cpp-output", IK_PreprocessedCXX) 804 .Case("objective-c-cpp-output", IK_PreprocessedObjC) 805 .Case("objc-cpp-output", IK_PreprocessedObjC) 806 .Case("objective-c++-cpp-output", IK_PreprocessedObjCXX) 807 .Case("objc++-cpp-output", IK_PreprocessedObjCXX) 808 .Case("c-header", IK_C) 809 .Case("cl-header", IK_OpenCL) 810 .Case("objective-c-header", IK_ObjC) 811 .Case("c++-header", IK_CXX) 812 .Case("objective-c++-header", IK_ObjCXX) 813 .Cases("ast", "pcm", IK_AST) 814 .Case("ir", IK_LLVM_IR) 815 .Default(IK_None); 816 if (DashX == IK_None) 817 Diags.Report(diag::err_drv_invalid_value) 818 << A->getAsString(Args) << A->getValue(); 819 } 820 821 // '-' is the default input if none is given. 822 std::vector<std::string> Inputs = Args.getAllArgValues(OPT_INPUT); 823 Opts.Inputs.clear(); 824 if (Inputs.empty()) 825 Inputs.push_back("-"); 826 for (unsigned i = 0, e = Inputs.size(); i != e; ++i) { 827 InputKind IK = DashX; 828 if (IK == IK_None) { 829 IK = FrontendOptions::getInputKindForExtension( 830 StringRef(Inputs[i]).rsplit('.').second); 831 // FIXME: Remove this hack. 832 if (i == 0) 833 DashX = IK; 834 } 835 Opts.Inputs.push_back(FrontendInputFile(Inputs[i], IK)); 836 } 837 838 return DashX; 839 } 840 841 std::string CompilerInvocation::GetResourcesPath(const char *Argv0, 842 void *MainAddr) { 843 llvm::sys::Path P = llvm::sys::Path::GetMainExecutable(Argv0, MainAddr); 844 845 if (!P.isEmpty()) { 846 P.eraseComponent(); // Remove /clang from foo/bin/clang 847 P.eraseComponent(); // Remove /bin from foo/bin 848 849 // Get foo/lib/clang/<version>/include 850 P.appendComponent("lib"); 851 P.appendComponent("clang"); 852 P.appendComponent(CLANG_VERSION_STRING); 853 } 854 855 return P.str(); 856 } 857 858 static void ParseHeaderSearchArgs(HeaderSearchOptions &Opts, ArgList &Args) { 859 using namespace options; 860 Opts.Sysroot = Args.getLastArgValue(OPT_isysroot, "/"); 861 Opts.Verbose = Args.hasArg(OPT_v); 862 Opts.UseBuiltinIncludes = !Args.hasArg(OPT_nobuiltininc); 863 Opts.UseStandardSystemIncludes = !Args.hasArg(OPT_nostdsysteminc); 864 Opts.UseStandardCXXIncludes = !Args.hasArg(OPT_nostdincxx); 865 if (const Arg *A = Args.getLastArg(OPT_stdlib_EQ)) 866 Opts.UseLibcxx = (strcmp(A->getValue(), "libc++") == 0); 867 Opts.ResourceDir = Args.getLastArgValue(OPT_resource_dir); 868 Opts.ModuleCachePath = Args.getLastArgValue(OPT_fmodules_cache_path); 869 Opts.DisableModuleHash = Args.hasArg(OPT_fdisable_module_hash); 870 Opts.ModuleCachePruneInterval = 871 getLastArgIntValue(Args, OPT_fmodules_prune_interval, 7 * 24 * 60 * 60); 872 Opts.ModuleCachePruneAfter = 873 getLastArgIntValue(Args, OPT_fmodules_prune_after, 31 * 24 * 60 * 60); 874 for (arg_iterator it = Args.filtered_begin(OPT_fmodules_ignore_macro), 875 ie = Args.filtered_end(); 876 it != ie; ++it) { 877 StringRef MacroDef = (*it)->getValue(); 878 Opts.ModulesIgnoreMacros.insert(MacroDef.split('=').first); 879 } 880 881 // Add -I..., -F..., and -index-header-map options in order. 882 bool IsIndexHeaderMap = false; 883 for (arg_iterator it = Args.filtered_begin(OPT_I, OPT_F, 884 OPT_index_header_map), 885 ie = Args.filtered_end(); it != ie; ++it) { 886 if ((*it)->getOption().matches(OPT_index_header_map)) { 887 // -index-header-map applies to the next -I or -F. 888 IsIndexHeaderMap = true; 889 continue; 890 } 891 892 frontend::IncludeDirGroup Group 893 = IsIndexHeaderMap? frontend::IndexHeaderMap : frontend::Angled; 894 895 Opts.AddPath((*it)->getValue(), Group, 896 /*IsFramework=*/ (*it)->getOption().matches(OPT_F), true); 897 IsIndexHeaderMap = false; 898 } 899 900 // Add -iprefix/-iwithprefix/-iwithprefixbefore options. 901 StringRef Prefix = ""; // FIXME: This isn't the correct default prefix. 902 for (arg_iterator it = Args.filtered_begin(OPT_iprefix, OPT_iwithprefix, 903 OPT_iwithprefixbefore), 904 ie = Args.filtered_end(); it != ie; ++it) { 905 const Arg *A = *it; 906 if (A->getOption().matches(OPT_iprefix)) 907 Prefix = A->getValue(); 908 else if (A->getOption().matches(OPT_iwithprefix)) 909 Opts.AddPath(Prefix.str() + A->getValue(), 910 frontend::After, false, true); 911 else 912 Opts.AddPath(Prefix.str() + A->getValue(), 913 frontend::Angled, false, true); 914 } 915 916 for (arg_iterator it = Args.filtered_begin(OPT_idirafter), 917 ie = Args.filtered_end(); it != ie; ++it) 918 Opts.AddPath((*it)->getValue(), frontend::After, false, true); 919 for (arg_iterator it = Args.filtered_begin(OPT_iquote), 920 ie = Args.filtered_end(); it != ie; ++it) 921 Opts.AddPath((*it)->getValue(), frontend::Quoted, false, true); 922 for (arg_iterator it = Args.filtered_begin(OPT_isystem, 923 OPT_iwithsysroot), ie = Args.filtered_end(); it != ie; ++it) 924 Opts.AddPath((*it)->getValue(), frontend::System, false, 925 !(*it)->getOption().matches(OPT_iwithsysroot)); 926 for (arg_iterator it = Args.filtered_begin(OPT_iframework), 927 ie = Args.filtered_end(); it != ie; ++it) 928 Opts.AddPath((*it)->getValue(), frontend::System, true, true); 929 930 // Add the paths for the various language specific isystem flags. 931 for (arg_iterator it = Args.filtered_begin(OPT_c_isystem), 932 ie = Args.filtered_end(); it != ie; ++it) 933 Opts.AddPath((*it)->getValue(), frontend::CSystem, false, true); 934 for (arg_iterator it = Args.filtered_begin(OPT_cxx_isystem), 935 ie = Args.filtered_end(); it != ie; ++it) 936 Opts.AddPath((*it)->getValue(), frontend::CXXSystem, false, true); 937 for (arg_iterator it = Args.filtered_begin(OPT_objc_isystem), 938 ie = Args.filtered_end(); it != ie; ++it) 939 Opts.AddPath((*it)->getValue(), frontend::ObjCSystem, false,true); 940 for (arg_iterator it = Args.filtered_begin(OPT_objcxx_isystem), 941 ie = Args.filtered_end(); it != ie; ++it) 942 Opts.AddPath((*it)->getValue(), frontend::ObjCXXSystem, false, true); 943 944 // Add the internal paths from a driver that detects standard include paths. 945 for (arg_iterator I = Args.filtered_begin(OPT_internal_isystem, 946 OPT_internal_externc_isystem), 947 E = Args.filtered_end(); 948 I != E; ++I) { 949 frontend::IncludeDirGroup Group = frontend::System; 950 if ((*I)->getOption().matches(OPT_internal_externc_isystem)) 951 Group = frontend::ExternCSystem; 952 Opts.AddPath((*I)->getValue(), Group, false, true); 953 } 954 955 // Add the path prefixes which are implicitly treated as being system headers. 956 for (arg_iterator I = Args.filtered_begin(OPT_isystem_prefix, 957 OPT_ino_system_prefix), 958 E = Args.filtered_end(); 959 I != E; ++I) 960 Opts.AddSystemHeaderPrefix((*I)->getValue(), 961 (*I)->getOption().matches(OPT_isystem_prefix)); 962 } 963 964 void CompilerInvocation::setLangDefaults(LangOptions &Opts, InputKind IK, 965 LangStandard::Kind LangStd) { 966 // Set some properties which depend solely on the input kind; it would be nice 967 // to move these to the language standard, and have the driver resolve the 968 // input kind + language standard. 969 if (IK == IK_Asm) { 970 Opts.AsmPreprocessor = 1; 971 } else if (IK == IK_ObjC || 972 IK == IK_ObjCXX || 973 IK == IK_PreprocessedObjC || 974 IK == IK_PreprocessedObjCXX) { 975 Opts.ObjC1 = Opts.ObjC2 = 1; 976 } 977 978 if (LangStd == LangStandard::lang_unspecified) { 979 // Based on the base language, pick one. 980 switch (IK) { 981 case IK_None: 982 case IK_AST: 983 case IK_LLVM_IR: 984 llvm_unreachable("Invalid input kind!"); 985 case IK_OpenCL: 986 LangStd = LangStandard::lang_opencl; 987 break; 988 case IK_CUDA: 989 LangStd = LangStandard::lang_cuda; 990 break; 991 case IK_Asm: 992 case IK_C: 993 case IK_PreprocessedC: 994 case IK_ObjC: 995 case IK_PreprocessedObjC: 996 LangStd = LangStandard::lang_gnu99; 997 break; 998 case IK_CXX: 999 case IK_PreprocessedCXX: 1000 case IK_ObjCXX: 1001 case IK_PreprocessedObjCXX: 1002 LangStd = LangStandard::lang_gnucxx98; 1003 break; 1004 } 1005 } 1006 1007 const LangStandard &Std = LangStandard::getLangStandardForKind(LangStd); 1008 Opts.LineComment = Std.hasLineComments(); 1009 Opts.C99 = Std.isC99(); 1010 Opts.C11 = Std.isC11(); 1011 Opts.CPlusPlus = Std.isCPlusPlus(); 1012 Opts.CPlusPlus11 = Std.isCPlusPlus11(); 1013 Opts.CPlusPlus1y = Std.isCPlusPlus1y(); 1014 Opts.Digraphs = Std.hasDigraphs(); 1015 Opts.GNUMode = Std.isGNUMode(); 1016 Opts.GNUInline = !Std.isC99(); 1017 Opts.HexFloats = Std.hasHexFloats(); 1018 Opts.ImplicitInt = Std.hasImplicitInt(); 1019 1020 // Set OpenCL Version. 1021 if (LangStd == LangStandard::lang_opencl) { 1022 Opts.OpenCL = 1; 1023 Opts.OpenCLVersion = 100; 1024 } 1025 else if (LangStd == LangStandard::lang_opencl11) { 1026 Opts.OpenCL = 1; 1027 Opts.OpenCLVersion = 110; 1028 } 1029 else if (LangStd == LangStandard::lang_opencl12) { 1030 Opts.OpenCL = 1; 1031 Opts.OpenCLVersion = 120; 1032 } 1033 1034 // OpenCL has some additional defaults. 1035 if (Opts.OpenCL) { 1036 Opts.AltiVec = 0; 1037 Opts.CXXOperatorNames = 1; 1038 Opts.LaxVectorConversions = 0; 1039 Opts.DefaultFPContract = 1; 1040 Opts.NativeHalfType = 1; 1041 } 1042 1043 if (LangStd == LangStandard::lang_cuda) 1044 Opts.CUDA = 1; 1045 1046 // OpenCL and C++ both have bool, true, false keywords. 1047 Opts.Bool = Opts.OpenCL || Opts.CPlusPlus; 1048 1049 // C++ has wchar_t keyword. 1050 Opts.WChar = Opts.CPlusPlus; 1051 1052 Opts.GNUKeywords = Opts.GNUMode; 1053 Opts.CXXOperatorNames = Opts.CPlusPlus; 1054 1055 // Mimicing gcc's behavior, trigraphs are only enabled if -trigraphs 1056 // is specified, or -std is set to a conforming mode. 1057 Opts.Trigraphs = !Opts.GNUMode; 1058 1059 Opts.DollarIdents = !Opts.AsmPreprocessor; 1060 } 1061 1062 /// Attempt to parse a visibility value out of the given argument. 1063 static Visibility parseVisibility(Arg *arg, ArgList &args, 1064 DiagnosticsEngine &diags) { 1065 StringRef value = arg->getValue(); 1066 if (value == "default") { 1067 return DefaultVisibility; 1068 } else if (value == "hidden") { 1069 return HiddenVisibility; 1070 } else if (value == "protected") { 1071 // FIXME: diagnose if target does not support protected visibility 1072 return ProtectedVisibility; 1073 } 1074 1075 diags.Report(diag::err_drv_invalid_value) 1076 << arg->getAsString(args) << value; 1077 return DefaultVisibility; 1078 } 1079 1080 static void ParseLangArgs(LangOptions &Opts, ArgList &Args, InputKind IK, 1081 DiagnosticsEngine &Diags) { 1082 // FIXME: Cleanup per-file based stuff. 1083 LangStandard::Kind LangStd = LangStandard::lang_unspecified; 1084 if (const Arg *A = Args.getLastArg(OPT_std_EQ)) { 1085 LangStd = llvm::StringSwitch<LangStandard::Kind>(A->getValue()) 1086 #define LANGSTANDARD(id, name, desc, features) \ 1087 .Case(name, LangStandard::lang_##id) 1088 #include "clang/Frontend/LangStandards.def" 1089 .Default(LangStandard::lang_unspecified); 1090 if (LangStd == LangStandard::lang_unspecified) 1091 Diags.Report(diag::err_drv_invalid_value) 1092 << A->getAsString(Args) << A->getValue(); 1093 else { 1094 // Valid standard, check to make sure language and standard are compatable. 1095 const LangStandard &Std = LangStandard::getLangStandardForKind(LangStd); 1096 switch (IK) { 1097 case IK_C: 1098 case IK_ObjC: 1099 case IK_PreprocessedC: 1100 case IK_PreprocessedObjC: 1101 if (!(Std.isC89() || Std.isC99())) 1102 Diags.Report(diag::err_drv_argument_not_allowed_with) 1103 << A->getAsString(Args) << "C/ObjC"; 1104 break; 1105 case IK_CXX: 1106 case IK_ObjCXX: 1107 case IK_PreprocessedCXX: 1108 case IK_PreprocessedObjCXX: 1109 if (!Std.isCPlusPlus()) 1110 Diags.Report(diag::err_drv_argument_not_allowed_with) 1111 << A->getAsString(Args) << "C++/ObjC++"; 1112 break; 1113 case IK_OpenCL: 1114 if (!Std.isC99()) 1115 Diags.Report(diag::err_drv_argument_not_allowed_with) 1116 << A->getAsString(Args) << "OpenCL"; 1117 break; 1118 case IK_CUDA: 1119 if (!Std.isCPlusPlus()) 1120 Diags.Report(diag::err_drv_argument_not_allowed_with) 1121 << A->getAsString(Args) << "CUDA"; 1122 break; 1123 default: 1124 break; 1125 } 1126 } 1127 } 1128 1129 // -cl-std only applies for OpenCL language standards. 1130 // Override the -std option in this case. 1131 if (const Arg *A = Args.getLastArg(OPT_cl_std_EQ)) { 1132 LangStandard::Kind OpenCLLangStd 1133 = llvm::StringSwitch<LangStandard::Kind>(A->getValue()) 1134 .Case("CL", LangStandard::lang_opencl) 1135 .Case("CL1.1", LangStandard::lang_opencl11) 1136 .Case("CL1.2", LangStandard::lang_opencl12) 1137 .Default(LangStandard::lang_unspecified); 1138 1139 if (OpenCLLangStd == LangStandard::lang_unspecified) { 1140 Diags.Report(diag::err_drv_invalid_value) 1141 << A->getAsString(Args) << A->getValue(); 1142 } 1143 else 1144 LangStd = OpenCLLangStd; 1145 } 1146 1147 CompilerInvocation::setLangDefaults(Opts, IK, LangStd); 1148 1149 // We abuse '-f[no-]gnu-keywords' to force overriding all GNU-extension 1150 // keywords. This behavior is provided by GCC's poorly named '-fasm' flag, 1151 // while a subset (the non-C++ GNU keywords) is provided by GCC's 1152 // '-fgnu-keywords'. Clang conflates the two for simplicity under the single 1153 // name, as it doesn't seem a useful distinction. 1154 Opts.GNUKeywords = Args.hasFlag(OPT_fgnu_keywords, OPT_fno_gnu_keywords, 1155 Opts.GNUKeywords); 1156 1157 if (Args.hasArg(OPT_fno_operator_names)) 1158 Opts.CXXOperatorNames = 0; 1159 1160 if (Opts.ObjC1) { 1161 if (Arg *arg = Args.getLastArg(OPT_fobjc_runtime_EQ)) { 1162 StringRef value = arg->getValue(); 1163 if (Opts.ObjCRuntime.tryParse(value)) 1164 Diags.Report(diag::err_drv_unknown_objc_runtime) << value; 1165 } 1166 1167 if (Args.hasArg(OPT_fobjc_gc_only)) 1168 Opts.setGC(LangOptions::GCOnly); 1169 else if (Args.hasArg(OPT_fobjc_gc)) 1170 Opts.setGC(LangOptions::HybridGC); 1171 else if (Args.hasArg(OPT_fobjc_arc)) { 1172 Opts.ObjCAutoRefCount = 1; 1173 if (!Opts.ObjCRuntime.allowsARC()) 1174 Diags.Report(diag::err_arc_unsupported_on_runtime); 1175 1176 // Only set ObjCARCWeak if ARC is enabled. 1177 if (Args.hasArg(OPT_fobjc_runtime_has_weak)) 1178 Opts.ObjCARCWeak = 1; 1179 else 1180 Opts.ObjCARCWeak = Opts.ObjCRuntime.allowsWeak(); 1181 } 1182 1183 if (Args.hasArg(OPT_fno_objc_infer_related_result_type)) 1184 Opts.ObjCInferRelatedResultType = 0; 1185 } 1186 1187 if (Args.hasArg(OPT_fgnu89_inline)) 1188 Opts.GNUInline = 1; 1189 1190 if (Args.hasArg(OPT_fapple_kext)) { 1191 if (!Opts.CPlusPlus) 1192 Diags.Report(diag::warn_c_kext); 1193 else 1194 Opts.AppleKext = 1; 1195 } 1196 1197 if (Args.hasArg(OPT_print_ivar_layout)) 1198 Opts.ObjCGCBitmapPrint = 1; 1199 if (Args.hasArg(OPT_fno_constant_cfstrings)) 1200 Opts.NoConstantCFStrings = 1; 1201 1202 if (Args.hasArg(OPT_faltivec)) 1203 Opts.AltiVec = 1; 1204 1205 if (Args.hasArg(OPT_pthread)) 1206 Opts.POSIXThreads = 1; 1207 1208 // The value-visibility mode defaults to "default". 1209 if (Arg *visOpt = Args.getLastArg(OPT_fvisibility)) { 1210 Opts.setValueVisibilityMode(parseVisibility(visOpt, Args, Diags)); 1211 } else { 1212 Opts.setValueVisibilityMode(DefaultVisibility); 1213 } 1214 1215 // The type-visibility mode defaults to the value-visibility mode. 1216 if (Arg *typeVisOpt = Args.getLastArg(OPT_ftype_visibility)) { 1217 Opts.setTypeVisibilityMode(parseVisibility(typeVisOpt, Args, Diags)); 1218 } else { 1219 Opts.setTypeVisibilityMode(Opts.getValueVisibilityMode()); 1220 } 1221 1222 if (Args.hasArg(OPT_fvisibility_inlines_hidden)) 1223 Opts.InlineVisibilityHidden = 1; 1224 1225 if (Args.hasArg(OPT_ftrapv)) { 1226 Opts.setSignedOverflowBehavior(LangOptions::SOB_Trapping); 1227 // Set the handler, if one is specified. 1228 Opts.OverflowHandler = 1229 Args.getLastArgValue(OPT_ftrapv_handler); 1230 } 1231 else if (Args.hasArg(OPT_fwrapv)) 1232 Opts.setSignedOverflowBehavior(LangOptions::SOB_Defined); 1233 1234 if (Args.hasArg(OPT_trigraphs)) 1235 Opts.Trigraphs = 1; 1236 1237 Opts.DollarIdents = Args.hasFlag(OPT_fdollars_in_identifiers, 1238 OPT_fno_dollars_in_identifiers, 1239 Opts.DollarIdents); 1240 Opts.PascalStrings = Args.hasArg(OPT_fpascal_strings); 1241 Opts.MicrosoftExt 1242 = Args.hasArg(OPT_fms_extensions) || Args.hasArg(OPT_fms_compatibility); 1243 Opts.MicrosoftMode = Args.hasArg(OPT_fms_compatibility); 1244 Opts.AsmBlocks = Args.hasArg(OPT_fasm_blocks) || Opts.MicrosoftExt; 1245 Opts.MSCVersion = getLastArgIntValue(Args, OPT_fmsc_version, 0, Diags); 1246 Opts.Borland = Args.hasArg(OPT_fborland_extensions); 1247 Opts.WritableStrings = Args.hasArg(OPT_fwritable_strings); 1248 Opts.ConstStrings = Args.hasFlag(OPT_fconst_strings, OPT_fno_const_strings, 1249 Opts.ConstStrings); 1250 if (Args.hasArg(OPT_fno_lax_vector_conversions)) 1251 Opts.LaxVectorConversions = 0; 1252 if (Args.hasArg(OPT_fno_threadsafe_statics)) 1253 Opts.ThreadsafeStatics = 0; 1254 Opts.Exceptions = Args.hasArg(OPT_fexceptions); 1255 Opts.ObjCExceptions = Args.hasArg(OPT_fobjc_exceptions); 1256 Opts.CXXExceptions = Args.hasArg(OPT_fcxx_exceptions); 1257 Opts.SjLjExceptions = Args.hasArg(OPT_fsjlj_exceptions); 1258 Opts.TraditionalCPP = Args.hasArg(OPT_traditional_cpp); 1259 1260 Opts.RTTI = !Args.hasArg(OPT_fno_rtti); 1261 Opts.Blocks = Args.hasArg(OPT_fblocks); 1262 Opts.BlocksRuntimeOptional = Args.hasArg(OPT_fblocks_runtime_optional); 1263 Opts.Modules = Args.hasArg(OPT_fmodules); 1264 Opts.CharIsSigned = !Args.hasArg(OPT_fno_signed_char); 1265 Opts.WChar = Opts.CPlusPlus && !Args.hasArg(OPT_fno_wchar); 1266 Opts.ShortWChar = Args.hasArg(OPT_fshort_wchar); 1267 Opts.ShortEnums = Args.hasArg(OPT_fshort_enums); 1268 Opts.Freestanding = Args.hasArg(OPT_ffreestanding); 1269 Opts.NoBuiltin = Args.hasArg(OPT_fno_builtin) || Opts.Freestanding; 1270 Opts.AssumeSaneOperatorNew = !Args.hasArg(OPT_fno_assume_sane_operator_new); 1271 Opts.HeinousExtensions = Args.hasArg(OPT_fheinous_gnu_extensions); 1272 Opts.AccessControl = !Args.hasArg(OPT_fno_access_control); 1273 Opts.ElideConstructors = !Args.hasArg(OPT_fno_elide_constructors); 1274 Opts.MathErrno = Args.hasArg(OPT_fmath_errno); 1275 Opts.InstantiationDepth = 1276 getLastArgIntValue(Args, OPT_ftemplate_depth, 256, Diags); 1277 Opts.ConstexprCallDepth = 1278 getLastArgIntValue(Args, OPT_fconstexpr_depth, 512, Diags); 1279 Opts.ConstexprStepLimit = 1280 getLastArgIntValue(Args, OPT_fconstexpr_steps, 1048576, Diags); 1281 Opts.BracketDepth = getLastArgIntValue(Args, OPT_fbracket_depth, 256, Diags); 1282 Opts.DelayedTemplateParsing = Args.hasArg(OPT_fdelayed_template_parsing); 1283 Opts.NumLargeByValueCopy = 1284 getLastArgIntValue(Args, OPT_Wlarge_by_value_copy_EQ, 0, Diags); 1285 Opts.MSBitfields = Args.hasArg(OPT_mms_bitfields); 1286 Opts.ObjCConstantStringClass = 1287 Args.getLastArgValue(OPT_fconstant_string_class); 1288 Opts.ObjCDefaultSynthProperties = 1289 Args.hasArg(OPT_fobjc_default_synthesize_properties); 1290 Opts.EncodeExtendedBlockSig = 1291 Args.hasArg(OPT_fencode_extended_block_signature); 1292 Opts.EmitAllDecls = Args.hasArg(OPT_femit_all_decls); 1293 Opts.PackStruct = getLastArgIntValue(Args, OPT_fpack_struct_EQ, 0, Diags); 1294 Opts.PICLevel = getLastArgIntValue(Args, OPT_pic_level, 0, Diags); 1295 Opts.PIELevel = getLastArgIntValue(Args, OPT_pie_level, 0, Diags); 1296 Opts.Static = Args.hasArg(OPT_static_define); 1297 Opts.DumpRecordLayoutsSimple = Args.hasArg(OPT_fdump_record_layouts_simple); 1298 Opts.DumpRecordLayouts = Opts.DumpRecordLayoutsSimple 1299 || Args.hasArg(OPT_fdump_record_layouts); 1300 Opts.DumpVTableLayouts = Args.hasArg(OPT_fdump_vtable_layouts); 1301 Opts.SpellChecking = !Args.hasArg(OPT_fno_spell_checking); 1302 Opts.NoBitFieldTypeAlign = Args.hasArg(OPT_fno_bitfield_type_align); 1303 Opts.SinglePrecisionConstants = Args.hasArg(OPT_cl_single_precision_constant); 1304 Opts.FastRelaxedMath = Args.hasArg(OPT_cl_fast_relaxed_math); 1305 Opts.MRTD = Args.hasArg(OPT_mrtd); 1306 Opts.HexagonQdsp6Compat = Args.hasArg(OPT_mqdsp6_compat); 1307 Opts.FakeAddressSpaceMap = Args.hasArg(OPT_ffake_address_space_map); 1308 Opts.ParseUnknownAnytype = Args.hasArg(OPT_funknown_anytype); 1309 Opts.DebuggerSupport = Args.hasArg(OPT_fdebugger_support); 1310 Opts.DebuggerCastResultToId = Args.hasArg(OPT_fdebugger_cast_result_to_id); 1311 Opts.DebuggerObjCLiteral = Args.hasArg(OPT_fdebugger_objc_literal); 1312 Opts.ApplePragmaPack = Args.hasArg(OPT_fapple_pragma_pack); 1313 Opts.CurrentModule = Args.getLastArgValue(OPT_fmodule_name); 1314 1315 // Check if -fopenmp is specified. 1316 Opts.OpenMP = Args.hasArg(OPT_fopenmp); 1317 1318 // Record whether the __DEPRECATED define was requested. 1319 Opts.Deprecated = Args.hasFlag(OPT_fdeprecated_macro, 1320 OPT_fno_deprecated_macro, 1321 Opts.Deprecated); 1322 1323 // FIXME: Eliminate this dependency. 1324 unsigned Opt = getOptimizationLevel(Args, IK, Diags), 1325 OptSize = getOptimizationLevelSize(Args); 1326 Opts.Optimize = Opt != 0; 1327 Opts.OptimizeSize = OptSize != 0; 1328 1329 // This is the __NO_INLINE__ define, which just depends on things like the 1330 // optimization level and -fno-inline, not actually whether the backend has 1331 // inlining enabled. 1332 Opts.NoInlineDefine = !Opt || Args.hasArg(OPT_fno_inline); 1333 1334 Opts.FastMath = Args.hasArg(OPT_ffast_math); 1335 Opts.FiniteMathOnly = Args.hasArg(OPT_ffinite_math_only); 1336 1337 Opts.RetainCommentsFromSystemHeaders = 1338 Args.hasArg(OPT_fretain_comments_from_system_headers); 1339 1340 unsigned SSP = getLastArgIntValue(Args, OPT_stack_protector, 0, Diags); 1341 switch (SSP) { 1342 default: 1343 Diags.Report(diag::err_drv_invalid_value) 1344 << Args.getLastArg(OPT_stack_protector)->getAsString(Args) << SSP; 1345 break; 1346 case 0: Opts.setStackProtector(LangOptions::SSPOff); break; 1347 case 1: Opts.setStackProtector(LangOptions::SSPOn); break; 1348 case 2: Opts.setStackProtector(LangOptions::SSPReq); break; 1349 } 1350 1351 // Parse -fsanitize= arguments. 1352 std::vector<std::string> Sanitizers = Args.getAllArgValues(OPT_fsanitize_EQ); 1353 for (unsigned I = 0, N = Sanitizers.size(); I != N; ++I) { 1354 // Since the Opts.Sanitize* values are bitfields, it's a little tricky to 1355 // efficiently map string values to them. Perform the mapping indirectly: 1356 // convert strings to enumerated values, then switch over the enum to set 1357 // the right bitfield value. 1358 enum Sanitizer { 1359 #define SANITIZER(NAME, ID) \ 1360 ID, 1361 #include "clang/Basic/Sanitizers.def" 1362 Unknown 1363 }; 1364 switch (llvm::StringSwitch<unsigned>(Sanitizers[I]) 1365 #define SANITIZER(NAME, ID) \ 1366 .Case(NAME, ID) 1367 #include "clang/Basic/Sanitizers.def" 1368 .Default(Unknown)) { 1369 #define SANITIZER(NAME, ID) \ 1370 case ID: \ 1371 Opts.Sanitize.ID = true; \ 1372 break; 1373 #include "clang/Basic/Sanitizers.def" 1374 1375 case Unknown: 1376 Diags.Report(diag::err_drv_invalid_value) 1377 << "-fsanitize=" << Sanitizers[I]; 1378 break; 1379 } 1380 } 1381 } 1382 1383 static void ParsePreprocessorArgs(PreprocessorOptions &Opts, ArgList &Args, 1384 FileManager &FileMgr, 1385 DiagnosticsEngine &Diags) { 1386 using namespace options; 1387 Opts.ImplicitPCHInclude = Args.getLastArgValue(OPT_include_pch); 1388 Opts.ImplicitPTHInclude = Args.getLastArgValue(OPT_include_pth); 1389 if (const Arg *A = Args.getLastArg(OPT_token_cache)) 1390 Opts.TokenCache = A->getValue(); 1391 else 1392 Opts.TokenCache = Opts.ImplicitPTHInclude; 1393 Opts.UsePredefines = !Args.hasArg(OPT_undef); 1394 Opts.DetailedRecord = Args.hasArg(OPT_detailed_preprocessing_record); 1395 Opts.DisablePCHValidation = Args.hasArg(OPT_fno_validate_pch); 1396 1397 Opts.DumpDeserializedPCHDecls = Args.hasArg(OPT_dump_deserialized_pch_decls); 1398 for (arg_iterator it = Args.filtered_begin(OPT_error_on_deserialized_pch_decl), 1399 ie = Args.filtered_end(); it != ie; ++it) { 1400 const Arg *A = *it; 1401 Opts.DeserializedPCHDeclsToErrorOn.insert(A->getValue()); 1402 } 1403 1404 if (const Arg *A = Args.getLastArg(OPT_preamble_bytes_EQ)) { 1405 StringRef Value(A->getValue()); 1406 size_t Comma = Value.find(','); 1407 unsigned Bytes = 0; 1408 unsigned EndOfLine = 0; 1409 1410 if (Comma == StringRef::npos || 1411 Value.substr(0, Comma).getAsInteger(10, Bytes) || 1412 Value.substr(Comma + 1).getAsInteger(10, EndOfLine)) 1413 Diags.Report(diag::err_drv_preamble_format); 1414 else { 1415 Opts.PrecompiledPreambleBytes.first = Bytes; 1416 Opts.PrecompiledPreambleBytes.second = (EndOfLine != 0); 1417 } 1418 } 1419 1420 // Add macros from the command line. 1421 for (arg_iterator it = Args.filtered_begin(OPT_D, OPT_U), 1422 ie = Args.filtered_end(); it != ie; ++it) { 1423 if ((*it)->getOption().matches(OPT_D)) 1424 Opts.addMacroDef((*it)->getValue()); 1425 else 1426 Opts.addMacroUndef((*it)->getValue()); 1427 } 1428 1429 Opts.MacroIncludes = Args.getAllArgValues(OPT_imacros); 1430 1431 // Add the ordered list of -includes. 1432 for (arg_iterator it = Args.filtered_begin(OPT_include), 1433 ie = Args.filtered_end(); it != ie; ++it) { 1434 const Arg *A = *it; 1435 Opts.Includes.push_back(A->getValue()); 1436 } 1437 1438 for (arg_iterator it = Args.filtered_begin(OPT_chain_include), 1439 ie = Args.filtered_end(); it != ie; ++it) { 1440 const Arg *A = *it; 1441 Opts.ChainedIncludes.push_back(A->getValue()); 1442 } 1443 1444 // Include 'altivec.h' if -faltivec option present 1445 if (Args.hasArg(OPT_faltivec)) 1446 Opts.Includes.push_back("altivec.h"); 1447 1448 for (arg_iterator it = Args.filtered_begin(OPT_remap_file), 1449 ie = Args.filtered_end(); it != ie; ++it) { 1450 const Arg *A = *it; 1451 std::pair<StringRef,StringRef> Split = 1452 StringRef(A->getValue()).split(';'); 1453 1454 if (Split.second.empty()) { 1455 Diags.Report(diag::err_drv_invalid_remap_file) << A->getAsString(Args); 1456 continue; 1457 } 1458 1459 Opts.addRemappedFile(Split.first, Split.second); 1460 } 1461 1462 if (Arg *A = Args.getLastArg(OPT_fobjc_arc_cxxlib_EQ)) { 1463 StringRef Name = A->getValue(); 1464 unsigned Library = llvm::StringSwitch<unsigned>(Name) 1465 .Case("libc++", ARCXX_libcxx) 1466 .Case("libstdc++", ARCXX_libstdcxx) 1467 .Case("none", ARCXX_nolib) 1468 .Default(~0U); 1469 if (Library == ~0U) 1470 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Name; 1471 else 1472 Opts.ObjCXXARCStandardLibrary = (ObjCXXARCStandardLibraryKind)Library; 1473 } 1474 } 1475 1476 static void ParsePreprocessorOutputArgs(PreprocessorOutputOptions &Opts, 1477 ArgList &Args, 1478 frontend::ActionKind Action) { 1479 using namespace options; 1480 1481 switch (Action) { 1482 case frontend::ASTDeclList: 1483 case frontend::ASTDump: 1484 case frontend::ASTDumpXML: 1485 case frontend::ASTPrint: 1486 case frontend::ASTView: 1487 case frontend::EmitAssembly: 1488 case frontend::EmitBC: 1489 case frontend::EmitHTML: 1490 case frontend::EmitLLVM: 1491 case frontend::EmitLLVMOnly: 1492 case frontend::EmitCodeGenOnly: 1493 case frontend::EmitObj: 1494 case frontend::FixIt: 1495 case frontend::GenerateModule: 1496 case frontend::GeneratePCH: 1497 case frontend::GeneratePTH: 1498 case frontend::ParseSyntaxOnly: 1499 case frontend::ModuleFileInfo: 1500 case frontend::PluginAction: 1501 case frontend::PrintDeclContext: 1502 case frontend::RewriteObjC: 1503 case frontend::RewriteTest: 1504 case frontend::RunAnalysis: 1505 case frontend::MigrateSource: 1506 Opts.ShowCPP = 0; 1507 break; 1508 1509 case frontend::DumpRawTokens: 1510 case frontend::DumpTokens: 1511 case frontend::InitOnly: 1512 case frontend::PrintPreamble: 1513 case frontend::PrintPreprocessedInput: 1514 case frontend::RewriteMacros: 1515 case frontend::RunPreprocessorOnly: 1516 Opts.ShowCPP = !Args.hasArg(OPT_dM); 1517 break; 1518 } 1519 1520 Opts.ShowComments = Args.hasArg(OPT_C); 1521 Opts.ShowLineMarkers = !Args.hasArg(OPT_P); 1522 Opts.ShowMacroComments = Args.hasArg(OPT_CC); 1523 Opts.ShowMacros = Args.hasArg(OPT_dM) || Args.hasArg(OPT_dD); 1524 Opts.RewriteIncludes = Args.hasArg(OPT_frewrite_includes); 1525 } 1526 1527 static void ParseTargetArgs(TargetOptions &Opts, ArgList &Args) { 1528 using namespace options; 1529 Opts.ABI = Args.getLastArgValue(OPT_target_abi); 1530 Opts.CXXABI = Args.getLastArgValue(OPT_cxx_abi); 1531 Opts.CPU = Args.getLastArgValue(OPT_target_cpu); 1532 Opts.FeaturesAsWritten = Args.getAllArgValues(OPT_target_feature); 1533 Opts.LinkerVersion = Args.getLastArgValue(OPT_target_linker_version); 1534 Opts.Triple = llvm::Triple::normalize(Args.getLastArgValue(OPT_triple)); 1535 1536 // Use the default target triple if unspecified. 1537 if (Opts.Triple.empty()) 1538 Opts.Triple = llvm::sys::getDefaultTargetTriple(); 1539 } 1540 1541 // 1542 1543 bool CompilerInvocation::CreateFromArgs(CompilerInvocation &Res, 1544 const char *const *ArgBegin, 1545 const char *const *ArgEnd, 1546 DiagnosticsEngine &Diags) { 1547 bool Success = true; 1548 1549 // Parse the arguments. 1550 OwningPtr<OptTable> Opts(createDriverOptTable()); 1551 unsigned MissingArgIndex, MissingArgCount; 1552 OwningPtr<InputArgList> Args( 1553 Opts->ParseArgs(ArgBegin, ArgEnd,MissingArgIndex, MissingArgCount)); 1554 1555 // Check for missing argument error. 1556 if (MissingArgCount) { 1557 Diags.Report(diag::err_drv_missing_argument) 1558 << Args->getArgString(MissingArgIndex) << MissingArgCount; 1559 Success = false; 1560 } 1561 1562 // Issue errors on unknown arguments. 1563 for (arg_iterator it = Args->filtered_begin(OPT_UNKNOWN), 1564 ie = Args->filtered_end(); it != ie; ++it) { 1565 Diags.Report(diag::err_drv_unknown_argument) << (*it)->getAsString(*Args); 1566 Success = false; 1567 } 1568 1569 // Issue errors on arguments that are not valid for CC1. 1570 for (ArgList::iterator I = Args->begin(), E = Args->end(); 1571 I != E; ++I) { 1572 if ((*I)->getOption().matches(options::OPT_INPUT)) 1573 continue; 1574 if (!(*I)->getOption().hasFlag(options::CC1Option)) { 1575 Diags.Report(diag::err_drv_unknown_argument) << (*I)->getAsString(*Args); 1576 Success = false; 1577 } 1578 } 1579 1580 Success = ParseAnalyzerArgs(*Res.getAnalyzerOpts(), *Args, Diags) && Success; 1581 Success = ParseMigratorArgs(Res.getMigratorOpts(), *Args) && Success; 1582 ParseDependencyOutputArgs(Res.getDependencyOutputOpts(), *Args); 1583 Success = ParseDiagnosticArgs(Res.getDiagnosticOpts(), *Args, &Diags) 1584 && Success; 1585 ParseCommentArgs(Res.getLangOpts()->CommentOpts, *Args); 1586 ParseFileSystemArgs(Res.getFileSystemOpts(), *Args); 1587 // FIXME: We shouldn't have to pass the DashX option around here 1588 InputKind DashX = ParseFrontendArgs(Res.getFrontendOpts(), *Args, Diags); 1589 Success = ParseCodeGenArgs(Res.getCodeGenOpts(), *Args, DashX, Diags) 1590 && Success; 1591 ParseHeaderSearchArgs(Res.getHeaderSearchOpts(), *Args); 1592 if (DashX != IK_AST && DashX != IK_LLVM_IR) { 1593 ParseLangArgs(*Res.getLangOpts(), *Args, DashX, Diags); 1594 if (Res.getFrontendOpts().ProgramAction == frontend::RewriteObjC) 1595 Res.getLangOpts()->ObjCExceptions = 1; 1596 } 1597 // FIXME: ParsePreprocessorArgs uses the FileManager to read the contents of 1598 // PCH file and find the original header name. Remove the need to do that in 1599 // ParsePreprocessorArgs and remove the FileManager 1600 // parameters from the function and the "FileManager.h" #include. 1601 FileManager FileMgr(Res.getFileSystemOpts()); 1602 ParsePreprocessorArgs(Res.getPreprocessorOpts(), *Args, FileMgr, Diags); 1603 ParsePreprocessorOutputArgs(Res.getPreprocessorOutputOpts(), *Args, 1604 Res.getFrontendOpts().ProgramAction); 1605 ParseTargetArgs(Res.getTargetOpts(), *Args); 1606 1607 return Success; 1608 } 1609 1610 namespace { 1611 1612 class ModuleSignature { 1613 SmallVector<uint64_t, 16> Data; 1614 unsigned CurBit; 1615 uint64_t CurValue; 1616 1617 public: 1618 ModuleSignature() : CurBit(0), CurValue(0) { } 1619 1620 void add(uint64_t Value, unsigned Bits); 1621 void add(StringRef Value); 1622 void flush(); 1623 1624 llvm::APInt getAsInteger() const; 1625 }; 1626 } 1627 1628 void ModuleSignature::add(uint64_t Value, unsigned int NumBits) { 1629 CurValue |= Value << CurBit; 1630 if (CurBit + NumBits < 64) { 1631 CurBit += NumBits; 1632 return; 1633 } 1634 1635 // Add the current word. 1636 Data.push_back(CurValue); 1637 1638 if (CurBit) 1639 CurValue = Value >> (64-CurBit); 1640 else 1641 CurValue = 0; 1642 CurBit = (CurBit+NumBits) & 63; 1643 } 1644 1645 void ModuleSignature::flush() { 1646 if (CurBit == 0) 1647 return; 1648 1649 Data.push_back(CurValue); 1650 CurBit = 0; 1651 CurValue = 0; 1652 } 1653 1654 void ModuleSignature::add(StringRef Value) { 1655 for (StringRef::iterator I = Value.begin(), IEnd = Value.end(); I != IEnd;++I) 1656 add(*I, 8); 1657 } 1658 1659 llvm::APInt ModuleSignature::getAsInteger() const { 1660 return llvm::APInt(Data.size() * 64, Data); 1661 } 1662 1663 std::string CompilerInvocation::getModuleHash() const { 1664 // Note: For QoI reasons, the things we use as a hash here should all be 1665 // dumped via the -module-info flag. 1666 using llvm::hash_code; 1667 using llvm::hash_value; 1668 using llvm::hash_combine; 1669 1670 // Start the signature with the compiler version. 1671 // FIXME: We'd rather use something more cryptographically sound than 1672 // CityHash, but this will do for now. 1673 hash_code code = hash_value(getClangFullRepositoryVersion()); 1674 1675 // Extend the signature with the language options 1676 #define LANGOPT(Name, Bits, Default, Description) \ 1677 code = hash_combine(code, LangOpts->Name); 1678 #define ENUM_LANGOPT(Name, Type, Bits, Default, Description) \ 1679 code = hash_combine(code, static_cast<unsigned>(LangOpts->get##Name())); 1680 #define BENIGN_LANGOPT(Name, Bits, Default, Description) 1681 #define BENIGN_ENUM_LANGOPT(Name, Type, Bits, Default, Description) 1682 #include "clang/Basic/LangOptions.def" 1683 1684 // Extend the signature with the target options. 1685 code = hash_combine(code, TargetOpts->Triple, TargetOpts->CPU, 1686 TargetOpts->ABI, TargetOpts->CXXABI, 1687 TargetOpts->LinkerVersion); 1688 for (unsigned i = 0, n = TargetOpts->FeaturesAsWritten.size(); i != n; ++i) 1689 code = hash_combine(code, TargetOpts->FeaturesAsWritten[i]); 1690 1691 // Extend the signature with preprocessor options. 1692 const PreprocessorOptions &ppOpts = getPreprocessorOpts(); 1693 const HeaderSearchOptions &hsOpts = getHeaderSearchOpts(); 1694 code = hash_combine(code, ppOpts.UsePredefines, ppOpts.DetailedRecord); 1695 1696 std::vector<StringRef> MacroDefs; 1697 for (std::vector<std::pair<std::string, bool/*isUndef*/> >::const_iterator 1698 I = getPreprocessorOpts().Macros.begin(), 1699 IEnd = getPreprocessorOpts().Macros.end(); 1700 I != IEnd; ++I) { 1701 // If we're supposed to ignore this macro for the purposes of modules, 1702 // don't put it into the hash. 1703 if (!hsOpts.ModulesIgnoreMacros.empty()) { 1704 // Check whether we're ignoring this macro. 1705 StringRef MacroDef = I->first; 1706 if (hsOpts.ModulesIgnoreMacros.count(MacroDef.split('=').first)) 1707 continue; 1708 } 1709 1710 code = hash_combine(code, I->first, I->second); 1711 } 1712 1713 // Extend the signature with the sysroot. 1714 code = hash_combine(code, hsOpts.Sysroot, hsOpts.UseBuiltinIncludes, 1715 hsOpts.UseStandardSystemIncludes, 1716 hsOpts.UseStandardCXXIncludes, 1717 hsOpts.UseLibcxx); 1718 1719 // Darwin-specific hack: if we have a sysroot, use the contents and 1720 // modification time of 1721 // $sysroot/System/Library/CoreServices/SystemVersion.plist 1722 // as part of the module hash. 1723 if (!hsOpts.Sysroot.empty()) { 1724 llvm::OwningPtr<llvm::MemoryBuffer> buffer; 1725 SmallString<128> systemVersionFile; 1726 systemVersionFile += hsOpts.Sysroot; 1727 llvm::sys::path::append(systemVersionFile, "System"); 1728 llvm::sys::path::append(systemVersionFile, "Library"); 1729 llvm::sys::path::append(systemVersionFile, "CoreServices"); 1730 llvm::sys::path::append(systemVersionFile, "SystemVersion.plist"); 1731 if (!llvm::MemoryBuffer::getFile(systemVersionFile, buffer)) { 1732 code = hash_combine(code, buffer.get()->getBuffer()); 1733 1734 struct stat statBuf; 1735 if (stat(systemVersionFile.c_str(), &statBuf) == 0) 1736 code = hash_combine(code, statBuf.st_mtime); 1737 } 1738 } 1739 1740 return llvm::APInt(64, code).toString(36, /*Signed=*/false); 1741 } 1742 1743 namespace clang { 1744 1745 // Declared in clang/Frontend/Utils.h. 1746 int getLastArgIntValue(const ArgList &Args, OptSpecifier Id, int Default, 1747 DiagnosticsEngine *Diags) { 1748 int Res = Default; 1749 if (Arg *A = Args.getLastArg(Id)) { 1750 if (StringRef(A->getValue()).getAsInteger(10, Res)) { 1751 if (Diags) 1752 Diags->Report(diag::err_drv_invalid_int_value) << A->getAsString(Args) 1753 << A->getValue(); 1754 } 1755 } 1756 return Res; 1757 } 1758 } 1759