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/Process.h" 36 #include "llvm/Support/system_error.h" 37 #include <sys/stat.h> 38 using namespace clang; 39 40 //===----------------------------------------------------------------------===// 41 // Initialization. 42 //===----------------------------------------------------------------------===// 43 44 CompilerInvocationBase::CompilerInvocationBase() 45 : LangOpts(new LangOptions()), TargetOpts(new TargetOptions()), 46 DiagnosticOpts(new DiagnosticOptions()), 47 HeaderSearchOpts(new HeaderSearchOptions()), 48 PreprocessorOpts(new PreprocessorOptions()) {} 49 50 CompilerInvocationBase::CompilerInvocationBase(const CompilerInvocationBase &X) 51 : RefCountedBase<CompilerInvocation>(), 52 LangOpts(new LangOptions(*X.getLangOpts())), 53 TargetOpts(new TargetOptions(X.getTargetOpts())), 54 DiagnosticOpts(new DiagnosticOptions(X.getDiagnosticOpts())), 55 HeaderSearchOpts(new HeaderSearchOptions(X.getHeaderSearchOpts())), 56 PreprocessorOpts(new PreprocessorOptions(X.getPreprocessorOpts())) {} 57 58 //===----------------------------------------------------------------------===// 59 // Deserialization (from args) 60 //===----------------------------------------------------------------------===// 61 62 using namespace clang::driver; 63 using namespace clang::driver::options; 64 using namespace llvm::opt; 65 66 // 67 68 static unsigned getOptimizationLevel(ArgList &Args, InputKind IK, 69 DiagnosticsEngine &Diags) { 70 unsigned DefaultOpt = 0; 71 if (IK == IK_OpenCL && !Args.hasArg(OPT_cl_opt_disable)) 72 DefaultOpt = 2; 73 74 if (Arg *A = Args.getLastArg(options::OPT_O_Group)) { 75 if (A->getOption().matches(options::OPT_O0)) 76 return 0; 77 78 if (A->getOption().matches(options::OPT_Ofast)) 79 return 3; 80 81 assert (A->getOption().matches(options::OPT_O)); 82 83 StringRef S(A->getValue()); 84 if (S == "s" || S == "z" || S.empty()) 85 return 2; 86 87 return getLastArgIntValue(Args, OPT_O, DefaultOpt, Diags); 88 } 89 90 return DefaultOpt; 91 } 92 93 static unsigned getOptimizationLevelSize(ArgList &Args) { 94 if (Arg *A = Args.getLastArg(options::OPT_O_Group)) { 95 if (A->getOption().matches(options::OPT_O)) { 96 switch (A->getValue()[0]) { 97 default: 98 return 0; 99 case 's': 100 return 1; 101 case 'z': 102 return 2; 103 } 104 } 105 } 106 return 0; 107 } 108 109 static void addWarningArgs(ArgList &Args, std::vector<std::string> &Warnings) { 110 for (arg_iterator I = Args.filtered_begin(OPT_W_Group), 111 E = Args.filtered_end(); I != E; ++I) { 112 Arg *A = *I; 113 // If the argument is a pure flag, add its name (minus the "W" at the beginning) 114 // to the warning list. Else, add its value (for the OPT_W case). 115 if (A->getOption().getKind() == Option::FlagClass) { 116 Warnings.push_back(A->getOption().getName().substr(1)); 117 } else { 118 for (unsigned Idx = 0, End = A->getNumValues(); 119 Idx < End; ++Idx) { 120 StringRef V = A->getValue(Idx); 121 // "-Wl," and such are not warning options. 122 // FIXME: Should be handled by putting these in separate flags. 123 if (V.startswith("l,") || V.startswith("a,") || V.startswith("p,")) 124 continue; 125 126 Warnings.push_back(V); 127 } 128 } 129 } 130 } 131 132 static bool ParseAnalyzerArgs(AnalyzerOptions &Opts, ArgList &Args, 133 DiagnosticsEngine &Diags) { 134 using namespace options; 135 bool Success = true; 136 if (Arg *A = Args.getLastArg(OPT_analyzer_store)) { 137 StringRef Name = A->getValue(); 138 AnalysisStores Value = llvm::StringSwitch<AnalysisStores>(Name) 139 #define ANALYSIS_STORE(NAME, CMDFLAG, DESC, CREATFN) \ 140 .Case(CMDFLAG, NAME##Model) 141 #include "clang/StaticAnalyzer/Core/Analyses.def" 142 .Default(NumStores); 143 if (Value == NumStores) { 144 Diags.Report(diag::err_drv_invalid_value) 145 << A->getAsString(Args) << Name; 146 Success = false; 147 } else { 148 Opts.AnalysisStoreOpt = Value; 149 } 150 } 151 152 if (Arg *A = Args.getLastArg(OPT_analyzer_constraints)) { 153 StringRef Name = A->getValue(); 154 AnalysisConstraints Value = llvm::StringSwitch<AnalysisConstraints>(Name) 155 #define ANALYSIS_CONSTRAINTS(NAME, CMDFLAG, DESC, CREATFN) \ 156 .Case(CMDFLAG, NAME##Model) 157 #include "clang/StaticAnalyzer/Core/Analyses.def" 158 .Default(NumConstraints); 159 if (Value == NumConstraints) { 160 Diags.Report(diag::err_drv_invalid_value) 161 << A->getAsString(Args) << Name; 162 Success = false; 163 } else { 164 Opts.AnalysisConstraintsOpt = Value; 165 } 166 } 167 168 if (Arg *A = Args.getLastArg(OPT_analyzer_output)) { 169 StringRef Name = A->getValue(); 170 AnalysisDiagClients Value = llvm::StringSwitch<AnalysisDiagClients>(Name) 171 #define ANALYSIS_DIAGNOSTICS(NAME, CMDFLAG, DESC, CREATFN) \ 172 .Case(CMDFLAG, PD_##NAME) 173 #include "clang/StaticAnalyzer/Core/Analyses.def" 174 .Default(NUM_ANALYSIS_DIAG_CLIENTS); 175 if (Value == NUM_ANALYSIS_DIAG_CLIENTS) { 176 Diags.Report(diag::err_drv_invalid_value) 177 << A->getAsString(Args) << Name; 178 Success = false; 179 } else { 180 Opts.AnalysisDiagOpt = Value; 181 } 182 } 183 184 if (Arg *A = Args.getLastArg(OPT_analyzer_purge)) { 185 StringRef Name = A->getValue(); 186 AnalysisPurgeMode Value = llvm::StringSwitch<AnalysisPurgeMode>(Name) 187 #define ANALYSIS_PURGE(NAME, CMDFLAG, DESC) \ 188 .Case(CMDFLAG, NAME) 189 #include "clang/StaticAnalyzer/Core/Analyses.def" 190 .Default(NumPurgeModes); 191 if (Value == NumPurgeModes) { 192 Diags.Report(diag::err_drv_invalid_value) 193 << A->getAsString(Args) << Name; 194 Success = false; 195 } else { 196 Opts.AnalysisPurgeOpt = Value; 197 } 198 } 199 200 if (Arg *A = Args.getLastArg(OPT_analyzer_inlining_mode)) { 201 StringRef Name = A->getValue(); 202 AnalysisInliningMode Value = llvm::StringSwitch<AnalysisInliningMode>(Name) 203 #define ANALYSIS_INLINING_MODE(NAME, CMDFLAG, DESC) \ 204 .Case(CMDFLAG, NAME) 205 #include "clang/StaticAnalyzer/Core/Analyses.def" 206 .Default(NumInliningModes); 207 if (Value == NumInliningModes) { 208 Diags.Report(diag::err_drv_invalid_value) 209 << A->getAsString(Args) << Name; 210 Success = false; 211 } else { 212 Opts.InliningMode = Value; 213 } 214 } 215 216 Opts.ShowCheckerHelp = Args.hasArg(OPT_analyzer_checker_help); 217 Opts.visualizeExplodedGraphWithGraphViz = 218 Args.hasArg(OPT_analyzer_viz_egraph_graphviz); 219 Opts.visualizeExplodedGraphWithUbiGraph = 220 Args.hasArg(OPT_analyzer_viz_egraph_ubigraph); 221 Opts.NoRetryExhausted = Args.hasArg(OPT_analyzer_disable_retry_exhausted); 222 Opts.AnalyzeAll = Args.hasArg(OPT_analyzer_opt_analyze_headers); 223 Opts.AnalyzerDisplayProgress = Args.hasArg(OPT_analyzer_display_progress); 224 Opts.AnalyzeNestedBlocks = 225 Args.hasArg(OPT_analyzer_opt_analyze_nested_blocks); 226 Opts.eagerlyAssumeBinOpBifurcation = Args.hasArg(OPT_analyzer_eagerly_assume); 227 Opts.AnalyzeSpecificFunction = Args.getLastArgValue(OPT_analyze_function); 228 Opts.UnoptimizedCFG = Args.hasArg(OPT_analysis_UnoptimizedCFG); 229 Opts.TrimGraph = Args.hasArg(OPT_trim_egraph); 230 Opts.maxBlockVisitOnPath = 231 getLastArgIntValue(Args, OPT_analyzer_max_loop, 4, Diags); 232 Opts.PrintStats = Args.hasArg(OPT_analyzer_stats); 233 Opts.InlineMaxStackDepth = 234 getLastArgIntValue(Args, OPT_analyzer_inline_max_stack_depth, 235 Opts.InlineMaxStackDepth, Diags); 236 237 Opts.CheckersControlList.clear(); 238 for (arg_iterator it = Args.filtered_begin(OPT_analyzer_checker, 239 OPT_analyzer_disable_checker), 240 ie = Args.filtered_end(); it != ie; ++it) { 241 const Arg *A = *it; 242 A->claim(); 243 bool enable = (A->getOption().getID() == OPT_analyzer_checker); 244 // We can have a list of comma separated checker names, e.g: 245 // '-analyzer-checker=cocoa,unix' 246 StringRef checkerList = A->getValue(); 247 SmallVector<StringRef, 4> checkers; 248 checkerList.split(checkers, ","); 249 for (unsigned i = 0, e = checkers.size(); i != e; ++i) 250 Opts.CheckersControlList.push_back(std::make_pair(checkers[i], enable)); 251 } 252 253 // Go through the analyzer configuration options. 254 for (arg_iterator it = Args.filtered_begin(OPT_analyzer_config), 255 ie = Args.filtered_end(); it != ie; ++it) { 256 const Arg *A = *it; 257 A->claim(); 258 // We can have a list of comma separated config names, e.g: 259 // '-analyzer-config key1=val1,key2=val2' 260 StringRef configList = A->getValue(); 261 SmallVector<StringRef, 4> configVals; 262 configList.split(configVals, ","); 263 for (unsigned i = 0, e = configVals.size(); i != e; ++i) { 264 StringRef key, val; 265 llvm::tie(key, val) = configVals[i].split("="); 266 if (val.empty()) { 267 Diags.Report(SourceLocation(), 268 diag::err_analyzer_config_no_value) << configVals[i]; 269 Success = false; 270 break; 271 } 272 if (val.find('=') != StringRef::npos) { 273 Diags.Report(SourceLocation(), 274 diag::err_analyzer_config_multiple_values) 275 << configVals[i]; 276 Success = false; 277 break; 278 } 279 Opts.Config[key] = val; 280 } 281 } 282 283 return Success; 284 } 285 286 static bool ParseMigratorArgs(MigratorOptions &Opts, ArgList &Args) { 287 Opts.NoNSAllocReallocError = Args.hasArg(OPT_migrator_no_nsalloc_error); 288 Opts.NoFinalizeRemoval = Args.hasArg(OPT_migrator_no_finalize_removal); 289 return true; 290 } 291 292 static void ParseCommentArgs(CommentOptions &Opts, ArgList &Args) { 293 Opts.BlockCommandNames = Args.getAllArgValues(OPT_fcomment_block_commands); 294 Opts.ParseAllComments = Args.hasArg(OPT_fparse_all_comments); 295 } 296 297 static bool ParseCodeGenArgs(CodeGenOptions &Opts, ArgList &Args, InputKind IK, 298 DiagnosticsEngine &Diags) { 299 using namespace options; 300 bool Success = true; 301 302 Opts.OptimizationLevel = getOptimizationLevel(Args, IK, Diags); 303 // TODO: This could be done in Driver 304 unsigned MaxOptLevel = 3; 305 if (Opts.OptimizationLevel > MaxOptLevel) { 306 // If the optimization level is not supported, fall back on the default optimization 307 Diags.Report(diag::warn_drv_optimization_value) 308 << Args.getLastArg(OPT_O)->getAsString(Args) << "-O" << MaxOptLevel; 309 Opts.OptimizationLevel = MaxOptLevel; 310 } 311 312 // We must always run at least the always inlining pass. 313 Opts.setInlining( 314 (Opts.OptimizationLevel > 1) ? CodeGenOptions::NormalInlining 315 : CodeGenOptions::OnlyAlwaysInlining); 316 // -fno-inline-functions overrides OptimizationLevel > 1. 317 Opts.NoInline = Args.hasArg(OPT_fno_inline); 318 Opts.setInlining(Args.hasArg(OPT_fno_inline_functions) ? 319 CodeGenOptions::OnlyAlwaysInlining : Opts.getInlining()); 320 321 if (Args.hasArg(OPT_gline_tables_only)) { 322 Opts.setDebugInfo(CodeGenOptions::DebugLineTablesOnly); 323 } else if (Args.hasArg(OPT_g_Flag) || Args.hasArg(OPT_gdwarf_2) || 324 Args.hasArg(OPT_gdwarf_3) || Args.hasArg(OPT_gdwarf_4)) { 325 if (Args.hasFlag(OPT_flimit_debug_info, OPT_fno_limit_debug_info, true)) 326 Opts.setDebugInfo(CodeGenOptions::LimitedDebugInfo); 327 else 328 Opts.setDebugInfo(CodeGenOptions::FullDebugInfo); 329 } 330 Opts.DebugColumnInfo = Args.hasArg(OPT_dwarf_column_info); 331 Opts.SplitDwarfFile = Args.getLastArgValue(OPT_split_dwarf_file); 332 if (Args.hasArg(OPT_gdwarf_2)) 333 Opts.DwarfVersion = 2; 334 else if (Args.hasArg(OPT_gdwarf_3)) 335 Opts.DwarfVersion = 3; 336 else if (Args.hasArg(OPT_gdwarf_4)) 337 Opts.DwarfVersion = 4; 338 else if (Opts.getDebugInfo() != CodeGenOptions::NoDebugInfo) 339 // Default Dwarf version is 4 if we are generating debug information. 340 Opts.DwarfVersion = 4; 341 342 Opts.DisableLLVMOpts = Args.hasArg(OPT_disable_llvm_optzns); 343 Opts.DisableRedZone = Args.hasArg(OPT_disable_red_zone); 344 Opts.ForbidGuardVariables = Args.hasArg(OPT_fforbid_guard_variables); 345 Opts.UseRegisterSizedBitfieldAccess = Args.hasArg( 346 OPT_fuse_register_sized_bitfield_access); 347 Opts.RelaxedAliasing = Args.hasArg(OPT_relaxed_aliasing); 348 Opts.StructPathTBAA = !Args.hasArg(OPT_no_struct_path_tbaa); 349 Opts.DwarfDebugFlags = Args.getLastArgValue(OPT_dwarf_debug_flags); 350 Opts.MergeAllConstants = !Args.hasArg(OPT_fno_merge_all_constants); 351 Opts.NoCommon = Args.hasArg(OPT_fno_common); 352 Opts.NoImplicitFloat = Args.hasArg(OPT_no_implicit_float); 353 Opts.OptimizeSize = getOptimizationLevelSize(Args); 354 Opts.SimplifyLibCalls = !(Args.hasArg(OPT_fno_builtin) || 355 Args.hasArg(OPT_ffreestanding)); 356 Opts.UnrollLoops = 357 Args.hasFlag(OPT_funroll_loops, OPT_fno_unroll_loops, 358 (Opts.OptimizationLevel > 1 && !Opts.OptimizeSize)); 359 Opts.RerollLoops = Args.hasArg(OPT_freroll_loops); 360 361 Opts.Autolink = !Args.hasArg(OPT_fno_autolink); 362 Opts.SampleProfileFile = Args.getLastArgValue(OPT_fprofile_sample_use_EQ); 363 Opts.AsmVerbose = Args.hasArg(OPT_masm_verbose); 364 Opts.ObjCAutoRefCountExceptions = Args.hasArg(OPT_fobjc_arc_exceptions); 365 Opts.CUDAIsDevice = Args.hasArg(OPT_fcuda_is_device); 366 Opts.CXAAtExit = !Args.hasArg(OPT_fno_use_cxa_atexit); 367 Opts.CXXCtorDtorAliases = Args.hasArg(OPT_mconstructor_aliases); 368 Opts.CodeModel = Args.getLastArgValue(OPT_mcode_model); 369 Opts.DebugPass = Args.getLastArgValue(OPT_mdebug_pass); 370 Opts.DisableFPElim = Args.hasArg(OPT_mdisable_fp_elim); 371 Opts.DisableFree = Args.hasArg(OPT_disable_free); 372 Opts.DisableTailCalls = Args.hasArg(OPT_mdisable_tail_calls); 373 Opts.FloatABI = Args.getLastArgValue(OPT_mfloat_abi); 374 Opts.HiddenWeakVTables = Args.hasArg(OPT_fhidden_weak_vtables); 375 Opts.LessPreciseFPMAD = Args.hasArg(OPT_cl_mad_enable); 376 Opts.LimitFloatPrecision = Args.getLastArgValue(OPT_mlimit_float_precision); 377 Opts.NoInfsFPMath = (Args.hasArg(OPT_menable_no_infinities) || 378 Args.hasArg(OPT_cl_finite_math_only)|| 379 Args.hasArg(OPT_cl_fast_relaxed_math)); 380 Opts.NoNaNsFPMath = (Args.hasArg(OPT_menable_no_nans) || 381 Args.hasArg(OPT_cl_finite_math_only)|| 382 Args.hasArg(OPT_cl_fast_relaxed_math)); 383 Opts.NoZeroInitializedInBSS = Args.hasArg(OPT_mno_zero_initialized_in_bss); 384 Opts.BackendOptions = Args.getAllArgValues(OPT_backend_option); 385 Opts.NumRegisterParameters = getLastArgIntValue(Args, OPT_mregparm, 0, Diags); 386 Opts.NoGlobalMerge = Args.hasArg(OPT_mno_global_merge); 387 Opts.NoExecStack = Args.hasArg(OPT_mno_exec_stack); 388 Opts.EnableSegmentedStacks = Args.hasArg(OPT_split_stacks); 389 Opts.RelaxAll = Args.hasArg(OPT_mrelax_all); 390 Opts.OmitLeafFramePointer = Args.hasArg(OPT_momit_leaf_frame_pointer); 391 Opts.SaveTempLabels = Args.hasArg(OPT_msave_temp_labels); 392 Opts.NoDwarf2CFIAsm = Args.hasArg(OPT_fno_dwarf2_cfi_asm); 393 Opts.NoDwarfDirectoryAsm = Args.hasArg(OPT_fno_dwarf_directory_asm); 394 Opts.SoftFloat = Args.hasArg(OPT_msoft_float); 395 Opts.StrictEnums = Args.hasArg(OPT_fstrict_enums); 396 Opts.UnsafeFPMath = Args.hasArg(OPT_menable_unsafe_fp_math) || 397 Args.hasArg(OPT_cl_unsafe_math_optimizations) || 398 Args.hasArg(OPT_cl_fast_relaxed_math); 399 Opts.UnwindTables = Args.hasArg(OPT_munwind_tables); 400 Opts.RelocationModel = Args.getLastArgValue(OPT_mrelocation_model, "pic"); 401 Opts.TrapFuncName = Args.getLastArgValue(OPT_ftrap_function_EQ); 402 Opts.UseInitArray = Args.hasArg(OPT_fuse_init_array); 403 404 Opts.FunctionSections = Args.hasFlag(OPT_ffunction_sections, 405 OPT_fno_function_sections, false); 406 Opts.DataSections = Args.hasFlag(OPT_fdata_sections, 407 OPT_fno_data_sections, false); 408 409 Opts.VectorizeBB = Args.hasArg(OPT_vectorize_slp_aggressive); 410 Opts.VectorizeLoop = Args.hasArg(OPT_vectorize_loops); 411 Opts.VectorizeSLP = Args.hasArg(OPT_vectorize_slp); 412 413 Opts.MainFileName = Args.getLastArgValue(OPT_main_file_name); 414 Opts.VerifyModule = !Args.hasArg(OPT_disable_llvm_verifier); 415 Opts.SanitizeRecover = !Args.hasArg(OPT_fno_sanitize_recover); 416 417 Opts.DisableGCov = Args.hasArg(OPT_test_coverage); 418 Opts.EmitGcovArcs = Args.hasArg(OPT_femit_coverage_data); 419 Opts.EmitGcovNotes = Args.hasArg(OPT_femit_coverage_notes); 420 if (Opts.EmitGcovArcs || Opts.EmitGcovNotes) { 421 Opts.CoverageFile = Args.getLastArgValue(OPT_coverage_file); 422 Opts.CoverageExtraChecksum = Args.hasArg(OPT_coverage_cfg_checksum); 423 Opts.CoverageNoFunctionNamesInData = 424 Args.hasArg(OPT_coverage_no_function_names_in_data); 425 if (Args.hasArg(OPT_coverage_version_EQ)) { 426 StringRef CoverageVersion = Args.getLastArgValue(OPT_coverage_version_EQ); 427 if (CoverageVersion.size() != 4) { 428 Diags.Report(diag::err_drv_invalid_value) 429 << Args.getLastArg(OPT_coverage_version_EQ)->getAsString(Args) 430 << CoverageVersion; 431 } else { 432 memcpy(Opts.CoverageVersion, CoverageVersion.data(), 4); 433 } 434 } 435 } 436 437 Opts.InstrumentFunctions = Args.hasArg(OPT_finstrument_functions); 438 Opts.InstrumentForProfiling = Args.hasArg(OPT_pg); 439 Opts.EmitOpenCLArgMetadata = Args.hasArg(OPT_cl_kernel_arg_info); 440 Opts.DebugCompilationDir = Args.getLastArgValue(OPT_fdebug_compilation_dir); 441 Opts.LinkBitcodeFile = Args.getLastArgValue(OPT_mlink_bitcode_file); 442 Opts.SanitizerBlacklistFile = Args.getLastArgValue(OPT_fsanitize_blacklist); 443 Opts.SanitizeMemoryTrackOrigins = 444 Args.hasArg(OPT_fsanitize_memory_track_origins); 445 Opts.SanitizeAddressZeroBaseShadow = 446 Args.hasArg(OPT_fsanitize_address_zero_base_shadow); 447 Opts.SanitizeUndefinedTrapOnError = 448 Args.hasArg(OPT_fsanitize_undefined_trap_on_error); 449 Opts.SSPBufferSize = 450 getLastArgIntValue(Args, OPT_stack_protector_buffer_size, 8, Diags); 451 Opts.StackRealignment = Args.hasArg(OPT_mstackrealign); 452 if (Arg *A = Args.getLastArg(OPT_mstack_alignment)) { 453 StringRef Val = A->getValue(); 454 unsigned StackAlignment = Opts.StackAlignment; 455 Val.getAsInteger(10, StackAlignment); 456 Opts.StackAlignment = StackAlignment; 457 } 458 459 if (Arg *A = Args.getLastArg(OPT_fobjc_dispatch_method_EQ)) { 460 StringRef Name = A->getValue(); 461 unsigned Method = llvm::StringSwitch<unsigned>(Name) 462 .Case("legacy", CodeGenOptions::Legacy) 463 .Case("non-legacy", CodeGenOptions::NonLegacy) 464 .Case("mixed", CodeGenOptions::Mixed) 465 .Default(~0U); 466 if (Method == ~0U) { 467 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Name; 468 Success = false; 469 } else { 470 Opts.setObjCDispatchMethod( 471 static_cast<CodeGenOptions::ObjCDispatchMethodKind>(Method)); 472 } 473 } 474 475 if (Arg *A = Args.getLastArg(OPT_ftlsmodel_EQ)) { 476 StringRef Name = A->getValue(); 477 unsigned Model = llvm::StringSwitch<unsigned>(Name) 478 .Case("global-dynamic", CodeGenOptions::GeneralDynamicTLSModel) 479 .Case("local-dynamic", CodeGenOptions::LocalDynamicTLSModel) 480 .Case("initial-exec", CodeGenOptions::InitialExecTLSModel) 481 .Case("local-exec", CodeGenOptions::LocalExecTLSModel) 482 .Default(~0U); 483 if (Model == ~0U) { 484 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Name; 485 Success = false; 486 } else { 487 Opts.setDefaultTLSModel(static_cast<CodeGenOptions::TLSModel>(Model)); 488 } 489 } 490 491 if (Arg *A = Args.getLastArg(OPT_ffp_contract)) { 492 StringRef Val = A->getValue(); 493 if (Val == "fast") 494 Opts.setFPContractMode(CodeGenOptions::FPC_Fast); 495 else if (Val == "on") 496 Opts.setFPContractMode(CodeGenOptions::FPC_On); 497 else if (Val == "off") 498 Opts.setFPContractMode(CodeGenOptions::FPC_Off); 499 else 500 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Val; 501 } 502 503 if (Arg *A = Args.getLastArg(OPT_fpcc_struct_return, OPT_freg_struct_return)) { 504 if (A->getOption().matches(OPT_fpcc_struct_return)) { 505 Opts.setStructReturnConvention(CodeGenOptions::SRCK_OnStack); 506 } else { 507 assert(A->getOption().matches(OPT_freg_struct_return)); 508 Opts.setStructReturnConvention(CodeGenOptions::SRCK_InRegs); 509 } 510 } 511 512 Opts.DependentLibraries = Args.getAllArgValues(OPT_dependent_lib); 513 514 return Success; 515 } 516 517 static void ParseDependencyOutputArgs(DependencyOutputOptions &Opts, 518 ArgList &Args) { 519 using namespace options; 520 Opts.OutputFile = Args.getLastArgValue(OPT_dependency_file); 521 Opts.Targets = Args.getAllArgValues(OPT_MT); 522 Opts.IncludeSystemHeaders = Args.hasArg(OPT_sys_header_deps); 523 Opts.UsePhonyTargets = Args.hasArg(OPT_MP); 524 Opts.ShowHeaderIncludes = Args.hasArg(OPT_H); 525 Opts.HeaderIncludeOutputFile = Args.getLastArgValue(OPT_header_include_file); 526 Opts.AddMissingHeaderDeps = Args.hasArg(OPT_MG); 527 Opts.PrintShowIncludes = Args.hasArg(OPT_show_includes); 528 Opts.DOTOutputFile = Args.getLastArgValue(OPT_dependency_dot); 529 } 530 531 bool clang::ParseDiagnosticArgs(DiagnosticOptions &Opts, ArgList &Args, 532 DiagnosticsEngine *Diags) { 533 using namespace options; 534 bool Success = true; 535 536 Opts.DiagnosticLogFile = Args.getLastArgValue(OPT_diagnostic_log_file); 537 Opts.DiagnosticSerializationFile = 538 Args.getLastArgValue(OPT_diagnostic_serialized_file); 539 Opts.IgnoreWarnings = Args.hasArg(OPT_w); 540 Opts.NoRewriteMacros = Args.hasArg(OPT_Wno_rewrite_macros); 541 Opts.Pedantic = Args.hasArg(OPT_pedantic); 542 Opts.PedanticErrors = Args.hasArg(OPT_pedantic_errors); 543 Opts.ShowCarets = !Args.hasArg(OPT_fno_caret_diagnostics); 544 Opts.ShowColors = Args.hasArg(OPT_fcolor_diagnostics); 545 Opts.ShowColumn = Args.hasFlag(OPT_fshow_column, 546 OPT_fno_show_column, 547 /*Default=*/true); 548 Opts.ShowFixits = !Args.hasArg(OPT_fno_diagnostics_fixit_info); 549 Opts.ShowLocation = !Args.hasArg(OPT_fno_show_source_location); 550 Opts.ShowOptionNames = Args.hasArg(OPT_fdiagnostics_show_option); 551 552 llvm::sys::Process::UseANSIEscapeCodes(Args.hasArg(OPT_fansi_escape_codes)); 553 554 // Default behavior is to not to show note include stacks. 555 Opts.ShowNoteIncludeStack = false; 556 if (Arg *A = Args.getLastArg(OPT_fdiagnostics_show_note_include_stack, 557 OPT_fno_diagnostics_show_note_include_stack)) 558 if (A->getOption().matches(OPT_fdiagnostics_show_note_include_stack)) 559 Opts.ShowNoteIncludeStack = true; 560 561 StringRef ShowOverloads = 562 Args.getLastArgValue(OPT_fshow_overloads_EQ, "all"); 563 if (ShowOverloads == "best") 564 Opts.setShowOverloads(Ovl_Best); 565 else if (ShowOverloads == "all") 566 Opts.setShowOverloads(Ovl_All); 567 else { 568 Success = false; 569 if (Diags) 570 Diags->Report(diag::err_drv_invalid_value) 571 << Args.getLastArg(OPT_fshow_overloads_EQ)->getAsString(Args) 572 << ShowOverloads; 573 } 574 575 StringRef ShowCategory = 576 Args.getLastArgValue(OPT_fdiagnostics_show_category, "none"); 577 if (ShowCategory == "none") 578 Opts.ShowCategories = 0; 579 else if (ShowCategory == "id") 580 Opts.ShowCategories = 1; 581 else if (ShowCategory == "name") 582 Opts.ShowCategories = 2; 583 else { 584 Success = false; 585 if (Diags) 586 Diags->Report(diag::err_drv_invalid_value) 587 << Args.getLastArg(OPT_fdiagnostics_show_category)->getAsString(Args) 588 << ShowCategory; 589 } 590 591 StringRef Format = 592 Args.getLastArgValue(OPT_fdiagnostics_format, "clang"); 593 if (Format == "clang") 594 Opts.setFormat(DiagnosticOptions::Clang); 595 else if (Format == "msvc") 596 Opts.setFormat(DiagnosticOptions::Msvc); 597 else if (Format == "msvc-fallback") { 598 Opts.setFormat(DiagnosticOptions::Msvc); 599 Opts.CLFallbackMode = true; 600 } else if (Format == "vi") 601 Opts.setFormat(DiagnosticOptions::Vi); 602 else { 603 Success = false; 604 if (Diags) 605 Diags->Report(diag::err_drv_invalid_value) 606 << Args.getLastArg(OPT_fdiagnostics_format)->getAsString(Args) 607 << Format; 608 } 609 610 Opts.ShowSourceRanges = Args.hasArg(OPT_fdiagnostics_print_source_range_info); 611 Opts.ShowParseableFixits = Args.hasArg(OPT_fdiagnostics_parseable_fixits); 612 Opts.ShowPresumedLoc = !Args.hasArg(OPT_fno_diagnostics_use_presumed_location); 613 Opts.VerifyDiagnostics = Args.hasArg(OPT_verify); 614 Opts.ElideType = !Args.hasArg(OPT_fno_elide_type); 615 Opts.ShowTemplateTree = Args.hasArg(OPT_fdiagnostics_show_template_tree); 616 Opts.ErrorLimit = getLastArgIntValue(Args, OPT_ferror_limit, 0, Diags); 617 Opts.MacroBacktraceLimit = 618 getLastArgIntValue(Args, OPT_fmacro_backtrace_limit, 619 DiagnosticOptions::DefaultMacroBacktraceLimit, Diags); 620 Opts.TemplateBacktraceLimit = getLastArgIntValue( 621 Args, OPT_ftemplate_backtrace_limit, 622 DiagnosticOptions::DefaultTemplateBacktraceLimit, Diags); 623 Opts.ConstexprBacktraceLimit = getLastArgIntValue( 624 Args, OPT_fconstexpr_backtrace_limit, 625 DiagnosticOptions::DefaultConstexprBacktraceLimit, Diags); 626 Opts.TabStop = getLastArgIntValue(Args, OPT_ftabstop, 627 DiagnosticOptions::DefaultTabStop, Diags); 628 if (Opts.TabStop == 0 || Opts.TabStop > DiagnosticOptions::MaxTabStop) { 629 Opts.TabStop = DiagnosticOptions::DefaultTabStop; 630 if (Diags) 631 Diags->Report(diag::warn_ignoring_ftabstop_value) 632 << Opts.TabStop << DiagnosticOptions::DefaultTabStop; 633 } 634 Opts.MessageLength = getLastArgIntValue(Args, OPT_fmessage_length, 0, Diags); 635 addWarningArgs(Args, Opts.Warnings); 636 637 return Success; 638 } 639 640 static void ParseFileSystemArgs(FileSystemOptions &Opts, ArgList &Args) { 641 Opts.WorkingDir = Args.getLastArgValue(OPT_working_directory); 642 } 643 644 static InputKind ParseFrontendArgs(FrontendOptions &Opts, ArgList &Args, 645 DiagnosticsEngine &Diags) { 646 using namespace options; 647 Opts.ProgramAction = frontend::ParseSyntaxOnly; 648 if (const Arg *A = Args.getLastArg(OPT_Action_Group)) { 649 switch (A->getOption().getID()) { 650 default: 651 llvm_unreachable("Invalid option in group!"); 652 case OPT_ast_list: 653 Opts.ProgramAction = frontend::ASTDeclList; break; 654 case OPT_ast_dump: 655 Opts.ProgramAction = frontend::ASTDump; break; 656 case OPT_ast_print: 657 Opts.ProgramAction = frontend::ASTPrint; break; 658 case OPT_ast_view: 659 Opts.ProgramAction = frontend::ASTView; break; 660 case OPT_dump_raw_tokens: 661 Opts.ProgramAction = frontend::DumpRawTokens; break; 662 case OPT_dump_tokens: 663 Opts.ProgramAction = frontend::DumpTokens; break; 664 case OPT_S: 665 Opts.ProgramAction = frontend::EmitAssembly; break; 666 case OPT_emit_llvm_bc: 667 Opts.ProgramAction = frontend::EmitBC; break; 668 case OPT_emit_html: 669 Opts.ProgramAction = frontend::EmitHTML; break; 670 case OPT_emit_llvm: 671 Opts.ProgramAction = frontend::EmitLLVM; break; 672 case OPT_emit_llvm_only: 673 Opts.ProgramAction = frontend::EmitLLVMOnly; break; 674 case OPT_emit_codegen_only: 675 Opts.ProgramAction = frontend::EmitCodeGenOnly; break; 676 case OPT_emit_obj: 677 Opts.ProgramAction = frontend::EmitObj; break; 678 case OPT_fixit_EQ: 679 Opts.FixItSuffix = A->getValue(); 680 // fall-through! 681 case OPT_fixit: 682 Opts.ProgramAction = frontend::FixIt; break; 683 case OPT_emit_module: 684 Opts.ProgramAction = frontend::GenerateModule; break; 685 case OPT_emit_pch: 686 Opts.ProgramAction = frontend::GeneratePCH; break; 687 case OPT_emit_pth: 688 Opts.ProgramAction = frontend::GeneratePTH; break; 689 case OPT_init_only: 690 Opts.ProgramAction = frontend::InitOnly; break; 691 case OPT_fsyntax_only: 692 Opts.ProgramAction = frontend::ParseSyntaxOnly; break; 693 case OPT_module_file_info: 694 Opts.ProgramAction = frontend::ModuleFileInfo; break; 695 case OPT_print_decl_contexts: 696 Opts.ProgramAction = frontend::PrintDeclContext; break; 697 case OPT_print_preamble: 698 Opts.ProgramAction = frontend::PrintPreamble; break; 699 case OPT_E: 700 Opts.ProgramAction = frontend::PrintPreprocessedInput; break; 701 case OPT_rewrite_macros: 702 Opts.ProgramAction = frontend::RewriteMacros; break; 703 case OPT_rewrite_objc: 704 Opts.ProgramAction = frontend::RewriteObjC; break; 705 case OPT_rewrite_test: 706 Opts.ProgramAction = frontend::RewriteTest; break; 707 case OPT_analyze: 708 Opts.ProgramAction = frontend::RunAnalysis; break; 709 case OPT_migrate: 710 Opts.ProgramAction = frontend::MigrateSource; break; 711 case OPT_Eonly: 712 Opts.ProgramAction = frontend::RunPreprocessorOnly; break; 713 } 714 } 715 716 if (const Arg* A = Args.getLastArg(OPT_plugin)) { 717 Opts.Plugins.push_back(A->getValue(0)); 718 Opts.ProgramAction = frontend::PluginAction; 719 Opts.ActionName = A->getValue(); 720 721 for (arg_iterator it = Args.filtered_begin(OPT_plugin_arg), 722 end = Args.filtered_end(); it != end; ++it) { 723 if ((*it)->getValue(0) == Opts.ActionName) 724 Opts.PluginArgs.push_back((*it)->getValue(1)); 725 } 726 } 727 728 Opts.AddPluginActions = Args.getAllArgValues(OPT_add_plugin); 729 Opts.AddPluginArgs.resize(Opts.AddPluginActions.size()); 730 for (int i = 0, e = Opts.AddPluginActions.size(); i != e; ++i) { 731 for (arg_iterator it = Args.filtered_begin(OPT_plugin_arg), 732 end = Args.filtered_end(); it != end; ++it) { 733 if ((*it)->getValue(0) == Opts.AddPluginActions[i]) 734 Opts.AddPluginArgs[i].push_back((*it)->getValue(1)); 735 } 736 } 737 738 if (const Arg *A = Args.getLastArg(OPT_code_completion_at)) { 739 Opts.CodeCompletionAt = 740 ParsedSourceLocation::FromString(A->getValue()); 741 if (Opts.CodeCompletionAt.FileName.empty()) 742 Diags.Report(diag::err_drv_invalid_value) 743 << A->getAsString(Args) << A->getValue(); 744 } 745 Opts.DisableFree = Args.hasArg(OPT_disable_free); 746 747 Opts.OutputFile = Args.getLastArgValue(OPT_o); 748 Opts.Plugins = Args.getAllArgValues(OPT_load); 749 Opts.RelocatablePCH = Args.hasArg(OPT_relocatable_pch); 750 Opts.ShowHelp = Args.hasArg(OPT_help); 751 Opts.ShowStats = Args.hasArg(OPT_print_stats); 752 Opts.ShowTimers = Args.hasArg(OPT_ftime_report); 753 Opts.ShowVersion = Args.hasArg(OPT_version); 754 Opts.ASTMergeFiles = Args.getAllArgValues(OPT_ast_merge); 755 Opts.LLVMArgs = Args.getAllArgValues(OPT_mllvm); 756 Opts.FixWhatYouCan = Args.hasArg(OPT_fix_what_you_can); 757 Opts.FixOnlyWarnings = Args.hasArg(OPT_fix_only_warnings); 758 Opts.FixAndRecompile = Args.hasArg(OPT_fixit_recompile); 759 Opts.FixToTemporaries = Args.hasArg(OPT_fixit_to_temp); 760 Opts.ASTDumpFilter = Args.getLastArgValue(OPT_ast_dump_filter); 761 Opts.ASTDumpLookups = Args.hasArg(OPT_ast_dump_lookups); 762 Opts.UseGlobalModuleIndex = !Args.hasArg(OPT_fno_modules_global_index); 763 Opts.GenerateGlobalModuleIndex = Opts.UseGlobalModuleIndex; 764 765 Opts.CodeCompleteOpts.IncludeMacros 766 = Args.hasArg(OPT_code_completion_macros); 767 Opts.CodeCompleteOpts.IncludeCodePatterns 768 = Args.hasArg(OPT_code_completion_patterns); 769 Opts.CodeCompleteOpts.IncludeGlobals 770 = !Args.hasArg(OPT_no_code_completion_globals); 771 Opts.CodeCompleteOpts.IncludeBriefComments 772 = Args.hasArg(OPT_code_completion_brief_comments); 773 774 Opts.OverrideRecordLayoutsFile 775 = Args.getLastArgValue(OPT_foverride_record_layout_EQ); 776 if (const Arg *A = Args.getLastArg(OPT_arcmt_check, 777 OPT_arcmt_modify, 778 OPT_arcmt_migrate)) { 779 switch (A->getOption().getID()) { 780 default: 781 llvm_unreachable("missed a case"); 782 case OPT_arcmt_check: 783 Opts.ARCMTAction = FrontendOptions::ARCMT_Check; 784 break; 785 case OPT_arcmt_modify: 786 Opts.ARCMTAction = FrontendOptions::ARCMT_Modify; 787 break; 788 case OPT_arcmt_migrate: 789 Opts.ARCMTAction = FrontendOptions::ARCMT_Migrate; 790 break; 791 } 792 } 793 Opts.MTMigrateDir = Args.getLastArgValue(OPT_mt_migrate_directory); 794 Opts.ARCMTMigrateReportOut 795 = Args.getLastArgValue(OPT_arcmt_migrate_report_output); 796 Opts.ARCMTMigrateEmitARCErrors 797 = Args.hasArg(OPT_arcmt_migrate_emit_arc_errors); 798 799 if (Args.hasArg(OPT_objcmt_migrate_literals)) 800 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_Literals; 801 if (Args.hasArg(OPT_objcmt_migrate_subscripting)) 802 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_Subscripting; 803 if (Args.hasArg(OPT_objcmt_migrate_property)) 804 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_Property; 805 if (Args.hasArg(OPT_objcmt_migrate_readonly_property)) 806 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_ReadonlyProperty; 807 if (Args.hasArg(OPT_objcmt_migrate_readwrite_property)) 808 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_ReadwriteProperty; 809 if (Args.hasArg(OPT_objcmt_migrate_annotation)) 810 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_Annotation; 811 if (Args.hasArg(OPT_objcmt_returns_innerpointer_property)) 812 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_ReturnsInnerPointerProperty; 813 if (Args.hasArg(OPT_objcmt_migrate_instancetype)) 814 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_Instancetype; 815 if (Args.hasArg(OPT_objcmt_migrate_nsmacros)) 816 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_NsMacros; 817 if (Args.hasArg(OPT_objcmt_migrate_protocol_conformance)) 818 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_ProtocolConformance; 819 if (Args.hasArg(OPT_objcmt_atomic_property)) 820 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_AtomicProperty; 821 if (Args.hasArg(OPT_objcmt_ns_nonatomic_iosonly)) 822 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_NsAtomicIOSOnlyProperty; 823 if (Args.hasArg(OPT_objcmt_migrate_all)) 824 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_MigrateDecls; 825 826 Opts.ObjCMTWhiteListPath = Args.getLastArgValue(OPT_objcmt_white_list_dir_path); 827 828 if (Opts.ARCMTAction != FrontendOptions::ARCMT_None && 829 Opts.ObjCMTAction != FrontendOptions::ObjCMT_None) { 830 Diags.Report(diag::err_drv_argument_not_allowed_with) 831 << "ARC migration" << "ObjC migration"; 832 } 833 834 InputKind DashX = IK_None; 835 if (const Arg *A = Args.getLastArg(OPT_x)) { 836 DashX = llvm::StringSwitch<InputKind>(A->getValue()) 837 .Case("c", IK_C) 838 .Case("cl", IK_OpenCL) 839 .Case("cuda", IK_CUDA) 840 .Case("c++", IK_CXX) 841 .Case("objective-c", IK_ObjC) 842 .Case("objective-c++", IK_ObjCXX) 843 .Case("cpp-output", IK_PreprocessedC) 844 .Case("assembler-with-cpp", IK_Asm) 845 .Case("c++-cpp-output", IK_PreprocessedCXX) 846 .Case("objective-c-cpp-output", IK_PreprocessedObjC) 847 .Case("objc-cpp-output", IK_PreprocessedObjC) 848 .Case("objective-c++-cpp-output", IK_PreprocessedObjCXX) 849 .Case("objc++-cpp-output", IK_PreprocessedObjCXX) 850 .Case("c-header", IK_C) 851 .Case("cl-header", IK_OpenCL) 852 .Case("objective-c-header", IK_ObjC) 853 .Case("c++-header", IK_CXX) 854 .Case("objective-c++-header", IK_ObjCXX) 855 .Cases("ast", "pcm", IK_AST) 856 .Case("ir", IK_LLVM_IR) 857 .Default(IK_None); 858 if (DashX == IK_None) 859 Diags.Report(diag::err_drv_invalid_value) 860 << A->getAsString(Args) << A->getValue(); 861 } 862 863 // '-' is the default input if none is given. 864 std::vector<std::string> Inputs = Args.getAllArgValues(OPT_INPUT); 865 Opts.Inputs.clear(); 866 if (Inputs.empty()) 867 Inputs.push_back("-"); 868 for (unsigned i = 0, e = Inputs.size(); i != e; ++i) { 869 InputKind IK = DashX; 870 if (IK == IK_None) { 871 IK = FrontendOptions::getInputKindForExtension( 872 StringRef(Inputs[i]).rsplit('.').second); 873 // FIXME: Remove this hack. 874 if (i == 0) 875 DashX = IK; 876 } 877 Opts.Inputs.push_back(FrontendInputFile(Inputs[i], IK)); 878 } 879 880 return DashX; 881 } 882 883 std::string CompilerInvocation::GetResourcesPath(const char *Argv0, 884 void *MainAddr) { 885 SmallString<128> P(llvm::sys::fs::getMainExecutable(Argv0, MainAddr)); 886 887 if (!P.empty()) { 888 llvm::sys::path::remove_filename(P); // Remove /clang from foo/bin/clang 889 llvm::sys::path::remove_filename(P); // Remove /bin from foo/bin 890 891 // Get foo/lib/clang/<version>/include 892 llvm::sys::path::append(P, "lib", "clang", CLANG_VERSION_STRING); 893 } 894 895 return P.str(); 896 } 897 898 static void ParseHeaderSearchArgs(HeaderSearchOptions &Opts, ArgList &Args) { 899 using namespace options; 900 Opts.Sysroot = Args.getLastArgValue(OPT_isysroot, "/"); 901 Opts.Verbose = Args.hasArg(OPT_v); 902 Opts.UseBuiltinIncludes = !Args.hasArg(OPT_nobuiltininc); 903 Opts.UseStandardSystemIncludes = !Args.hasArg(OPT_nostdsysteminc); 904 Opts.UseStandardCXXIncludes = !Args.hasArg(OPT_nostdincxx); 905 if (const Arg *A = Args.getLastArg(OPT_stdlib_EQ)) 906 Opts.UseLibcxx = (strcmp(A->getValue(), "libc++") == 0); 907 Opts.ResourceDir = Args.getLastArgValue(OPT_resource_dir); 908 Opts.ModuleCachePath = Args.getLastArgValue(OPT_fmodules_cache_path); 909 Opts.DisableModuleHash = Args.hasArg(OPT_fdisable_module_hash); 910 // -fmodules implies -fmodule-maps 911 Opts.ModuleMaps = Args.hasArg(OPT_fmodule_maps) || Args.hasArg(OPT_fmodules); 912 Opts.ModuleCachePruneInterval = 913 getLastArgIntValue(Args, OPT_fmodules_prune_interval, 7 * 24 * 60 * 60); 914 Opts.ModuleCachePruneAfter = 915 getLastArgIntValue(Args, OPT_fmodules_prune_after, 31 * 24 * 60 * 60); 916 for (arg_iterator it = Args.filtered_begin(OPT_fmodules_ignore_macro), 917 ie = Args.filtered_end(); 918 it != ie; ++it) { 919 StringRef MacroDef = (*it)->getValue(); 920 Opts.ModulesIgnoreMacros.insert(MacroDef.split('=').first); 921 } 922 std::vector<std::string> ModuleMapFiles = 923 Args.getAllArgValues(OPT_fmodule_map_file); 924 Opts.ModuleMapFiles.insert(ModuleMapFiles.begin(), ModuleMapFiles.end()); 925 926 // Add -I..., -F..., and -index-header-map options in order. 927 bool IsIndexHeaderMap = false; 928 for (arg_iterator it = Args.filtered_begin(OPT_I, OPT_F, 929 OPT_index_header_map), 930 ie = Args.filtered_end(); it != ie; ++it) { 931 if ((*it)->getOption().matches(OPT_index_header_map)) { 932 // -index-header-map applies to the next -I or -F. 933 IsIndexHeaderMap = true; 934 continue; 935 } 936 937 frontend::IncludeDirGroup Group 938 = IsIndexHeaderMap? frontend::IndexHeaderMap : frontend::Angled; 939 940 Opts.AddPath((*it)->getValue(), Group, 941 /*IsFramework=*/ (*it)->getOption().matches(OPT_F), true); 942 IsIndexHeaderMap = false; 943 } 944 945 // Add -iprefix/-iwithprefix/-iwithprefixbefore options. 946 StringRef Prefix = ""; // FIXME: This isn't the correct default prefix. 947 for (arg_iterator it = Args.filtered_begin(OPT_iprefix, OPT_iwithprefix, 948 OPT_iwithprefixbefore), 949 ie = Args.filtered_end(); it != ie; ++it) { 950 const Arg *A = *it; 951 if (A->getOption().matches(OPT_iprefix)) 952 Prefix = A->getValue(); 953 else if (A->getOption().matches(OPT_iwithprefix)) 954 Opts.AddPath(Prefix.str() + A->getValue(), 955 frontend::After, false, true); 956 else 957 Opts.AddPath(Prefix.str() + A->getValue(), 958 frontend::Angled, false, true); 959 } 960 961 for (arg_iterator it = Args.filtered_begin(OPT_idirafter), 962 ie = Args.filtered_end(); it != ie; ++it) 963 Opts.AddPath((*it)->getValue(), frontend::After, false, true); 964 for (arg_iterator it = Args.filtered_begin(OPT_iquote), 965 ie = Args.filtered_end(); it != ie; ++it) 966 Opts.AddPath((*it)->getValue(), frontend::Quoted, false, true); 967 for (arg_iterator it = Args.filtered_begin(OPT_isystem, 968 OPT_iwithsysroot), ie = Args.filtered_end(); it != ie; ++it) 969 Opts.AddPath((*it)->getValue(), frontend::System, false, 970 !(*it)->getOption().matches(OPT_iwithsysroot)); 971 for (arg_iterator it = Args.filtered_begin(OPT_iframework), 972 ie = Args.filtered_end(); it != ie; ++it) 973 Opts.AddPath((*it)->getValue(), frontend::System, true, true); 974 975 // Add the paths for the various language specific isystem flags. 976 for (arg_iterator it = Args.filtered_begin(OPT_c_isystem), 977 ie = Args.filtered_end(); it != ie; ++it) 978 Opts.AddPath((*it)->getValue(), frontend::CSystem, false, true); 979 for (arg_iterator it = Args.filtered_begin(OPT_cxx_isystem), 980 ie = Args.filtered_end(); it != ie; ++it) 981 Opts.AddPath((*it)->getValue(), frontend::CXXSystem, false, true); 982 for (arg_iterator it = Args.filtered_begin(OPT_objc_isystem), 983 ie = Args.filtered_end(); it != ie; ++it) 984 Opts.AddPath((*it)->getValue(), frontend::ObjCSystem, false,true); 985 for (arg_iterator it = Args.filtered_begin(OPT_objcxx_isystem), 986 ie = Args.filtered_end(); it != ie; ++it) 987 Opts.AddPath((*it)->getValue(), frontend::ObjCXXSystem, false, true); 988 989 // Add the internal paths from a driver that detects standard include paths. 990 for (arg_iterator I = Args.filtered_begin(OPT_internal_isystem, 991 OPT_internal_externc_isystem), 992 E = Args.filtered_end(); 993 I != E; ++I) { 994 frontend::IncludeDirGroup Group = frontend::System; 995 if ((*I)->getOption().matches(OPT_internal_externc_isystem)) 996 Group = frontend::ExternCSystem; 997 Opts.AddPath((*I)->getValue(), Group, false, true); 998 } 999 1000 // Add the path prefixes which are implicitly treated as being system headers. 1001 for (arg_iterator I = Args.filtered_begin(OPT_isystem_prefix, 1002 OPT_ino_system_prefix), 1003 E = Args.filtered_end(); 1004 I != E; ++I) 1005 Opts.AddSystemHeaderPrefix((*I)->getValue(), 1006 (*I)->getOption().matches(OPT_isystem_prefix)); 1007 } 1008 1009 void CompilerInvocation::setLangDefaults(LangOptions &Opts, InputKind IK, 1010 LangStandard::Kind LangStd) { 1011 // Set some properties which depend solely on the input kind; it would be nice 1012 // to move these to the language standard, and have the driver resolve the 1013 // input kind + language standard. 1014 if (IK == IK_Asm) { 1015 Opts.AsmPreprocessor = 1; 1016 } else if (IK == IK_ObjC || 1017 IK == IK_ObjCXX || 1018 IK == IK_PreprocessedObjC || 1019 IK == IK_PreprocessedObjCXX) { 1020 Opts.ObjC1 = Opts.ObjC2 = 1; 1021 } 1022 1023 if (LangStd == LangStandard::lang_unspecified) { 1024 // Based on the base language, pick one. 1025 switch (IK) { 1026 case IK_None: 1027 case IK_AST: 1028 case IK_LLVM_IR: 1029 llvm_unreachable("Invalid input kind!"); 1030 case IK_OpenCL: 1031 LangStd = LangStandard::lang_opencl; 1032 break; 1033 case IK_CUDA: 1034 LangStd = LangStandard::lang_cuda; 1035 break; 1036 case IK_Asm: 1037 case IK_C: 1038 case IK_PreprocessedC: 1039 case IK_ObjC: 1040 case IK_PreprocessedObjC: 1041 LangStd = LangStandard::lang_gnu99; 1042 break; 1043 case IK_CXX: 1044 case IK_PreprocessedCXX: 1045 case IK_ObjCXX: 1046 case IK_PreprocessedObjCXX: 1047 LangStd = LangStandard::lang_gnucxx98; 1048 break; 1049 } 1050 } 1051 1052 const LangStandard &Std = LangStandard::getLangStandardForKind(LangStd); 1053 Opts.LineComment = Std.hasLineComments(); 1054 Opts.C99 = Std.isC99(); 1055 Opts.C11 = Std.isC11(); 1056 Opts.CPlusPlus = Std.isCPlusPlus(); 1057 Opts.CPlusPlus11 = Std.isCPlusPlus11(); 1058 Opts.CPlusPlus1y = Std.isCPlusPlus1y(); 1059 Opts.Digraphs = Std.hasDigraphs(); 1060 Opts.GNUMode = Std.isGNUMode(); 1061 Opts.GNUInline = !Std.isC99(); 1062 Opts.HexFloats = Std.hasHexFloats(); 1063 Opts.ImplicitInt = Std.hasImplicitInt(); 1064 1065 // Set OpenCL Version. 1066 if (LangStd == LangStandard::lang_opencl) { 1067 Opts.OpenCL = 1; 1068 Opts.OpenCLVersion = 100; 1069 } 1070 else if (LangStd == LangStandard::lang_opencl11) { 1071 Opts.OpenCL = 1; 1072 Opts.OpenCLVersion = 110; 1073 } 1074 else if (LangStd == LangStandard::lang_opencl12) { 1075 Opts.OpenCL = 1; 1076 Opts.OpenCLVersion = 120; 1077 } 1078 1079 // OpenCL has some additional defaults. 1080 if (Opts.OpenCL) { 1081 Opts.AltiVec = 0; 1082 Opts.CXXOperatorNames = 1; 1083 Opts.LaxVectorConversions = 0; 1084 Opts.DefaultFPContract = 1; 1085 Opts.NativeHalfType = 1; 1086 } 1087 1088 if (LangStd == LangStandard::lang_cuda) 1089 Opts.CUDA = 1; 1090 1091 // OpenCL and C++ both have bool, true, false keywords. 1092 Opts.Bool = Opts.OpenCL || Opts.CPlusPlus; 1093 1094 // C++ has wchar_t keyword. 1095 Opts.WChar = Opts.CPlusPlus; 1096 1097 Opts.GNUKeywords = Opts.GNUMode; 1098 Opts.CXXOperatorNames = Opts.CPlusPlus; 1099 1100 // Mimicing gcc's behavior, trigraphs are only enabled if -trigraphs 1101 // is specified, or -std is set to a conforming mode. 1102 Opts.Trigraphs = !Opts.GNUMode; 1103 1104 Opts.DollarIdents = !Opts.AsmPreprocessor; 1105 1106 // C++1y onwards has sized global deallocation functions. 1107 Opts.SizedDeallocation = Opts.CPlusPlus1y; 1108 } 1109 1110 /// Attempt to parse a visibility value out of the given argument. 1111 static Visibility parseVisibility(Arg *arg, ArgList &args, 1112 DiagnosticsEngine &diags) { 1113 StringRef value = arg->getValue(); 1114 if (value == "default") { 1115 return DefaultVisibility; 1116 } else if (value == "hidden") { 1117 return HiddenVisibility; 1118 } else if (value == "protected") { 1119 // FIXME: diagnose if target does not support protected visibility 1120 return ProtectedVisibility; 1121 } 1122 1123 diags.Report(diag::err_drv_invalid_value) 1124 << arg->getAsString(args) << value; 1125 return DefaultVisibility; 1126 } 1127 1128 static void ParseLangArgs(LangOptions &Opts, ArgList &Args, InputKind IK, 1129 DiagnosticsEngine &Diags) { 1130 // FIXME: Cleanup per-file based stuff. 1131 LangStandard::Kind LangStd = LangStandard::lang_unspecified; 1132 if (const Arg *A = Args.getLastArg(OPT_std_EQ)) { 1133 LangStd = llvm::StringSwitch<LangStandard::Kind>(A->getValue()) 1134 #define LANGSTANDARD(id, name, desc, features) \ 1135 .Case(name, LangStandard::lang_##id) 1136 #include "clang/Frontend/LangStandards.def" 1137 .Default(LangStandard::lang_unspecified); 1138 if (LangStd == LangStandard::lang_unspecified) 1139 Diags.Report(diag::err_drv_invalid_value) 1140 << A->getAsString(Args) << A->getValue(); 1141 else { 1142 // Valid standard, check to make sure language and standard are compatable. 1143 const LangStandard &Std = LangStandard::getLangStandardForKind(LangStd); 1144 switch (IK) { 1145 case IK_C: 1146 case IK_ObjC: 1147 case IK_PreprocessedC: 1148 case IK_PreprocessedObjC: 1149 if (!(Std.isC89() || Std.isC99())) 1150 Diags.Report(diag::err_drv_argument_not_allowed_with) 1151 << A->getAsString(Args) << "C/ObjC"; 1152 break; 1153 case IK_CXX: 1154 case IK_ObjCXX: 1155 case IK_PreprocessedCXX: 1156 case IK_PreprocessedObjCXX: 1157 if (!Std.isCPlusPlus()) 1158 Diags.Report(diag::err_drv_argument_not_allowed_with) 1159 << A->getAsString(Args) << "C++/ObjC++"; 1160 break; 1161 case IK_OpenCL: 1162 if (!Std.isC99()) 1163 Diags.Report(diag::err_drv_argument_not_allowed_with) 1164 << A->getAsString(Args) << "OpenCL"; 1165 break; 1166 case IK_CUDA: 1167 if (!Std.isCPlusPlus()) 1168 Diags.Report(diag::err_drv_argument_not_allowed_with) 1169 << A->getAsString(Args) << "CUDA"; 1170 break; 1171 default: 1172 break; 1173 } 1174 } 1175 } 1176 1177 // -cl-std only applies for OpenCL language standards. 1178 // Override the -std option in this case. 1179 if (const Arg *A = Args.getLastArg(OPT_cl_std_EQ)) { 1180 LangStandard::Kind OpenCLLangStd 1181 = llvm::StringSwitch<LangStandard::Kind>(A->getValue()) 1182 .Case("CL", LangStandard::lang_opencl) 1183 .Case("CL1.1", LangStandard::lang_opencl11) 1184 .Case("CL1.2", LangStandard::lang_opencl12) 1185 .Default(LangStandard::lang_unspecified); 1186 1187 if (OpenCLLangStd == LangStandard::lang_unspecified) { 1188 Diags.Report(diag::err_drv_invalid_value) 1189 << A->getAsString(Args) << A->getValue(); 1190 } 1191 else 1192 LangStd = OpenCLLangStd; 1193 } 1194 1195 CompilerInvocation::setLangDefaults(Opts, IK, LangStd); 1196 1197 // We abuse '-f[no-]gnu-keywords' to force overriding all GNU-extension 1198 // keywords. This behavior is provided by GCC's poorly named '-fasm' flag, 1199 // while a subset (the non-C++ GNU keywords) is provided by GCC's 1200 // '-fgnu-keywords'. Clang conflates the two for simplicity under the single 1201 // name, as it doesn't seem a useful distinction. 1202 Opts.GNUKeywords = Args.hasFlag(OPT_fgnu_keywords, OPT_fno_gnu_keywords, 1203 Opts.GNUKeywords); 1204 1205 if (Args.hasArg(OPT_fno_operator_names)) 1206 Opts.CXXOperatorNames = 0; 1207 1208 if (Opts.ObjC1) { 1209 if (Arg *arg = Args.getLastArg(OPT_fobjc_runtime_EQ)) { 1210 StringRef value = arg->getValue(); 1211 if (Opts.ObjCRuntime.tryParse(value)) 1212 Diags.Report(diag::err_drv_unknown_objc_runtime) << value; 1213 } 1214 1215 if (Args.hasArg(OPT_fobjc_gc_only)) 1216 Opts.setGC(LangOptions::GCOnly); 1217 else if (Args.hasArg(OPT_fobjc_gc)) 1218 Opts.setGC(LangOptions::HybridGC); 1219 else if (Args.hasArg(OPT_fobjc_arc)) { 1220 Opts.ObjCAutoRefCount = 1; 1221 if (!Opts.ObjCRuntime.allowsARC()) 1222 Diags.Report(diag::err_arc_unsupported_on_runtime); 1223 1224 // Only set ObjCARCWeak if ARC is enabled. 1225 if (Args.hasArg(OPT_fobjc_runtime_has_weak)) 1226 Opts.ObjCARCWeak = 1; 1227 else 1228 Opts.ObjCARCWeak = Opts.ObjCRuntime.allowsWeak(); 1229 } 1230 1231 if (Args.hasArg(OPT_fno_objc_infer_related_result_type)) 1232 Opts.ObjCInferRelatedResultType = 0; 1233 1234 if (Args.hasArg(OPT_fobjc_subscripting_legacy_runtime)) 1235 Opts.ObjCSubscriptingLegacyRuntime = 1236 (Opts.ObjCRuntime.getKind() == ObjCRuntime::FragileMacOSX); 1237 } 1238 1239 if (Args.hasArg(OPT_fgnu89_inline)) 1240 Opts.GNUInline = 1; 1241 1242 if (Args.hasArg(OPT_fapple_kext)) { 1243 if (!Opts.CPlusPlus) 1244 Diags.Report(diag::warn_c_kext); 1245 else 1246 Opts.AppleKext = 1; 1247 } 1248 1249 if (Args.hasArg(OPT_print_ivar_layout)) 1250 Opts.ObjCGCBitmapPrint = 1; 1251 if (Args.hasArg(OPT_fno_constant_cfstrings)) 1252 Opts.NoConstantCFStrings = 1; 1253 1254 if (Args.hasArg(OPT_faltivec)) 1255 Opts.AltiVec = 1; 1256 1257 if (Args.hasArg(OPT_pthread)) 1258 Opts.POSIXThreads = 1; 1259 1260 // The value-visibility mode defaults to "default". 1261 if (Arg *visOpt = Args.getLastArg(OPT_fvisibility)) { 1262 Opts.setValueVisibilityMode(parseVisibility(visOpt, Args, Diags)); 1263 } else { 1264 Opts.setValueVisibilityMode(DefaultVisibility); 1265 } 1266 1267 // The type-visibility mode defaults to the value-visibility mode. 1268 if (Arg *typeVisOpt = Args.getLastArg(OPT_ftype_visibility)) { 1269 Opts.setTypeVisibilityMode(parseVisibility(typeVisOpt, Args, Diags)); 1270 } else { 1271 Opts.setTypeVisibilityMode(Opts.getValueVisibilityMode()); 1272 } 1273 1274 if (Args.hasArg(OPT_fvisibility_inlines_hidden)) 1275 Opts.InlineVisibilityHidden = 1; 1276 1277 if (Args.hasArg(OPT_ftrapv)) { 1278 Opts.setSignedOverflowBehavior(LangOptions::SOB_Trapping); 1279 // Set the handler, if one is specified. 1280 Opts.OverflowHandler = 1281 Args.getLastArgValue(OPT_ftrapv_handler); 1282 } 1283 else if (Args.hasArg(OPT_fwrapv)) 1284 Opts.setSignedOverflowBehavior(LangOptions::SOB_Defined); 1285 1286 if (Args.hasArg(OPT_trigraphs)) 1287 Opts.Trigraphs = 1; 1288 1289 Opts.DollarIdents = Args.hasFlag(OPT_fdollars_in_identifiers, 1290 OPT_fno_dollars_in_identifiers, 1291 Opts.DollarIdents); 1292 Opts.PascalStrings = Args.hasArg(OPT_fpascal_strings); 1293 Opts.MicrosoftExt 1294 = Args.hasArg(OPT_fms_extensions) || Args.hasArg(OPT_fms_compatibility); 1295 Opts.MicrosoftMode = Args.hasArg(OPT_fms_compatibility); 1296 Opts.AsmBlocks = Args.hasArg(OPT_fasm_blocks) || Opts.MicrosoftExt; 1297 Opts.MSCVersion = getLastArgIntValue(Args, OPT_fmsc_version, 0, Diags); 1298 Opts.Borland = Args.hasArg(OPT_fborland_extensions); 1299 Opts.WritableStrings = Args.hasArg(OPT_fwritable_strings); 1300 Opts.ConstStrings = Args.hasFlag(OPT_fconst_strings, OPT_fno_const_strings, 1301 Opts.ConstStrings); 1302 if (Args.hasArg(OPT_fno_lax_vector_conversions)) 1303 Opts.LaxVectorConversions = 0; 1304 if (Args.hasArg(OPT_fno_threadsafe_statics)) 1305 Opts.ThreadsafeStatics = 0; 1306 Opts.Exceptions = Args.hasArg(OPT_fexceptions); 1307 Opts.ObjCExceptions = Args.hasArg(OPT_fobjc_exceptions); 1308 Opts.CXXExceptions = Args.hasArg(OPT_fcxx_exceptions); 1309 Opts.SjLjExceptions = Args.hasArg(OPT_fsjlj_exceptions); 1310 Opts.TraditionalCPP = Args.hasArg(OPT_traditional_cpp); 1311 1312 Opts.RTTI = !Args.hasArg(OPT_fno_rtti); 1313 Opts.Blocks = Args.hasArg(OPT_fblocks); 1314 Opts.BlocksRuntimeOptional = Args.hasArg(OPT_fblocks_runtime_optional); 1315 Opts.Modules = Args.hasArg(OPT_fmodules); 1316 Opts.ModulesDeclUse = Args.hasArg(OPT_fmodules_decluse); 1317 Opts.CharIsSigned = Opts.OpenCL || !Args.hasArg(OPT_fno_signed_char); 1318 Opts.WChar = Opts.CPlusPlus && !Args.hasArg(OPT_fno_wchar); 1319 Opts.ShortWChar = Args.hasArg(OPT_fshort_wchar); 1320 Opts.ShortEnums = Args.hasArg(OPT_fshort_enums); 1321 Opts.Freestanding = Args.hasArg(OPT_ffreestanding); 1322 Opts.NoBuiltin = Args.hasArg(OPT_fno_builtin) || Opts.Freestanding; 1323 Opts.NoMathBuiltin = Args.hasArg(OPT_fno_math_builtin); 1324 Opts.AssumeSaneOperatorNew = !Args.hasArg(OPT_fno_assume_sane_operator_new); 1325 Opts.SizedDeallocation |= Args.hasArg(OPT_fsized_deallocation); 1326 Opts.HeinousExtensions = Args.hasArg(OPT_fheinous_gnu_extensions); 1327 Opts.AccessControl = !Args.hasArg(OPT_fno_access_control); 1328 Opts.ElideConstructors = !Args.hasArg(OPT_fno_elide_constructors); 1329 Opts.MathErrno = !Opts.OpenCL && Args.hasArg(OPT_fmath_errno); 1330 Opts.InstantiationDepth = 1331 getLastArgIntValue(Args, OPT_ftemplate_depth, 256, Diags); 1332 Opts.ArrowDepth = 1333 getLastArgIntValue(Args, OPT_foperator_arrow_depth, 256, Diags); 1334 Opts.ConstexprCallDepth = 1335 getLastArgIntValue(Args, OPT_fconstexpr_depth, 512, Diags); 1336 Opts.ConstexprStepLimit = 1337 getLastArgIntValue(Args, OPT_fconstexpr_steps, 1048576, Diags); 1338 Opts.BracketDepth = getLastArgIntValue(Args, OPT_fbracket_depth, 256, Diags); 1339 Opts.DelayedTemplateParsing = Args.hasArg(OPT_fdelayed_template_parsing); 1340 Opts.NumLargeByValueCopy = 1341 getLastArgIntValue(Args, OPT_Wlarge_by_value_copy_EQ, 0, Diags); 1342 Opts.MSBitfields = Args.hasArg(OPT_mms_bitfields); 1343 Opts.ObjCConstantStringClass = 1344 Args.getLastArgValue(OPT_fconstant_string_class); 1345 Opts.ObjCDefaultSynthProperties = 1346 !Args.hasArg(OPT_disable_objc_default_synthesize_properties); 1347 Opts.EncodeExtendedBlockSig = 1348 Args.hasArg(OPT_fencode_extended_block_signature); 1349 Opts.EmitAllDecls = Args.hasArg(OPT_femit_all_decls); 1350 Opts.PackStruct = getLastArgIntValue(Args, OPT_fpack_struct_EQ, 0, Diags); 1351 Opts.PICLevel = getLastArgIntValue(Args, OPT_pic_level, 0, Diags); 1352 Opts.PIELevel = getLastArgIntValue(Args, OPT_pie_level, 0, Diags); 1353 Opts.Static = Args.hasArg(OPT_static_define); 1354 Opts.DumpRecordLayoutsSimple = Args.hasArg(OPT_fdump_record_layouts_simple); 1355 Opts.DumpRecordLayouts = Opts.DumpRecordLayoutsSimple 1356 || Args.hasArg(OPT_fdump_record_layouts); 1357 Opts.DumpVTableLayouts = Args.hasArg(OPT_fdump_vtable_layouts); 1358 Opts.SpellChecking = !Args.hasArg(OPT_fno_spell_checking); 1359 Opts.NoBitFieldTypeAlign = Args.hasArg(OPT_fno_bitfield_type_align); 1360 Opts.SinglePrecisionConstants = Args.hasArg(OPT_cl_single_precision_constant); 1361 Opts.FastRelaxedMath = Args.hasArg(OPT_cl_fast_relaxed_math); 1362 Opts.MRTD = Args.hasArg(OPT_mrtd); 1363 Opts.HexagonQdsp6Compat = Args.hasArg(OPT_mqdsp6_compat); 1364 Opts.FakeAddressSpaceMap = Args.hasArg(OPT_ffake_address_space_map); 1365 Opts.ParseUnknownAnytype = Args.hasArg(OPT_funknown_anytype); 1366 Opts.DebuggerSupport = Args.hasArg(OPT_fdebugger_support); 1367 Opts.DebuggerCastResultToId = Args.hasArg(OPT_fdebugger_cast_result_to_id); 1368 Opts.DebuggerObjCLiteral = Args.hasArg(OPT_fdebugger_objc_literal); 1369 Opts.ApplePragmaPack = Args.hasArg(OPT_fapple_pragma_pack); 1370 Opts.CurrentModule = Args.getLastArgValue(OPT_fmodule_name); 1371 1372 if (Arg *A = Args.getLastArg(OPT_faddress_space_map_mangling_EQ)) { 1373 switch (llvm::StringSwitch<unsigned>(A->getValue()) 1374 .Case("target", LangOptions::ASMM_Target) 1375 .Case("no", LangOptions::ASMM_Off) 1376 .Case("yes", LangOptions::ASMM_On) 1377 .Default(255)) { 1378 default: 1379 Diags.Report(diag::err_drv_invalid_value) 1380 << "-faddress-space-map-mangling=" << A->getValue(); 1381 break; 1382 case LangOptions::ASMM_Target: 1383 Opts.setAddressSpaceMapMangling(LangOptions::ASMM_Target); 1384 break; 1385 case LangOptions::ASMM_On: 1386 Opts.setAddressSpaceMapMangling(LangOptions::ASMM_On); 1387 break; 1388 case LangOptions::ASMM_Off: 1389 Opts.setAddressSpaceMapMangling(LangOptions::ASMM_Off); 1390 break; 1391 } 1392 } 1393 1394 // Check if -fopenmp is specified. 1395 Opts.OpenMP = Args.hasArg(OPT_fopenmp); 1396 1397 // Record whether the __DEPRECATED define was requested. 1398 Opts.Deprecated = Args.hasFlag(OPT_fdeprecated_macro, 1399 OPT_fno_deprecated_macro, 1400 Opts.Deprecated); 1401 1402 // FIXME: Eliminate this dependency. 1403 unsigned Opt = getOptimizationLevel(Args, IK, Diags), 1404 OptSize = getOptimizationLevelSize(Args); 1405 Opts.Optimize = Opt != 0; 1406 Opts.OptimizeSize = OptSize != 0; 1407 1408 // This is the __NO_INLINE__ define, which just depends on things like the 1409 // optimization level and -fno-inline, not actually whether the backend has 1410 // inlining enabled. 1411 Opts.NoInlineDefine = !Opt || Args.hasArg(OPT_fno_inline); 1412 1413 Opts.FastMath = Args.hasArg(OPT_ffast_math); 1414 Opts.FiniteMathOnly = Args.hasArg(OPT_ffinite_math_only); 1415 1416 Opts.RetainCommentsFromSystemHeaders = 1417 Args.hasArg(OPT_fretain_comments_from_system_headers); 1418 1419 unsigned SSP = getLastArgIntValue(Args, OPT_stack_protector, 0, Diags); 1420 switch (SSP) { 1421 default: 1422 Diags.Report(diag::err_drv_invalid_value) 1423 << Args.getLastArg(OPT_stack_protector)->getAsString(Args) << SSP; 1424 break; 1425 case 0: Opts.setStackProtector(LangOptions::SSPOff); break; 1426 case 1: Opts.setStackProtector(LangOptions::SSPOn); break; 1427 case 2: Opts.setStackProtector(LangOptions::SSPReq); break; 1428 } 1429 1430 // Parse -fsanitize= arguments. 1431 std::vector<std::string> Sanitizers = Args.getAllArgValues(OPT_fsanitize_EQ); 1432 for (unsigned I = 0, N = Sanitizers.size(); I != N; ++I) { 1433 // Since the Opts.Sanitize* values are bitfields, it's a little tricky to 1434 // efficiently map string values to them. Perform the mapping indirectly: 1435 // convert strings to enumerated values, then switch over the enum to set 1436 // the right bitfield value. 1437 enum Sanitizer { 1438 #define SANITIZER(NAME, ID) \ 1439 ID, 1440 #include "clang/Basic/Sanitizers.def" 1441 Unknown 1442 }; 1443 switch (llvm::StringSwitch<unsigned>(Sanitizers[I]) 1444 #define SANITIZER(NAME, ID) \ 1445 .Case(NAME, ID) 1446 #include "clang/Basic/Sanitizers.def" 1447 .Default(Unknown)) { 1448 #define SANITIZER(NAME, ID) \ 1449 case ID: \ 1450 Opts.Sanitize.ID = true; \ 1451 break; 1452 #include "clang/Basic/Sanitizers.def" 1453 1454 case Unknown: 1455 Diags.Report(diag::err_drv_invalid_value) 1456 << "-fsanitize=" << Sanitizers[I]; 1457 break; 1458 } 1459 } 1460 } 1461 1462 static void ParsePreprocessorArgs(PreprocessorOptions &Opts, ArgList &Args, 1463 FileManager &FileMgr, 1464 DiagnosticsEngine &Diags) { 1465 using namespace options; 1466 Opts.ImplicitPCHInclude = Args.getLastArgValue(OPT_include_pch); 1467 Opts.ImplicitPTHInclude = Args.getLastArgValue(OPT_include_pth); 1468 if (const Arg *A = Args.getLastArg(OPT_token_cache)) 1469 Opts.TokenCache = A->getValue(); 1470 else 1471 Opts.TokenCache = Opts.ImplicitPTHInclude; 1472 Opts.UsePredefines = !Args.hasArg(OPT_undef); 1473 Opts.DetailedRecord = Args.hasArg(OPT_detailed_preprocessing_record); 1474 Opts.DisablePCHValidation = Args.hasArg(OPT_fno_validate_pch); 1475 1476 Opts.DumpDeserializedPCHDecls = Args.hasArg(OPT_dump_deserialized_pch_decls); 1477 for (arg_iterator it = Args.filtered_begin(OPT_error_on_deserialized_pch_decl), 1478 ie = Args.filtered_end(); it != ie; ++it) { 1479 const Arg *A = *it; 1480 Opts.DeserializedPCHDeclsToErrorOn.insert(A->getValue()); 1481 } 1482 1483 if (const Arg *A = Args.getLastArg(OPT_preamble_bytes_EQ)) { 1484 StringRef Value(A->getValue()); 1485 size_t Comma = Value.find(','); 1486 unsigned Bytes = 0; 1487 unsigned EndOfLine = 0; 1488 1489 if (Comma == StringRef::npos || 1490 Value.substr(0, Comma).getAsInteger(10, Bytes) || 1491 Value.substr(Comma + 1).getAsInteger(10, EndOfLine)) 1492 Diags.Report(diag::err_drv_preamble_format); 1493 else { 1494 Opts.PrecompiledPreambleBytes.first = Bytes; 1495 Opts.PrecompiledPreambleBytes.second = (EndOfLine != 0); 1496 } 1497 } 1498 1499 // Add macros from the command line. 1500 for (arg_iterator it = Args.filtered_begin(OPT_D, OPT_U), 1501 ie = Args.filtered_end(); it != ie; ++it) { 1502 if ((*it)->getOption().matches(OPT_D)) 1503 Opts.addMacroDef((*it)->getValue()); 1504 else 1505 Opts.addMacroUndef((*it)->getValue()); 1506 } 1507 1508 Opts.MacroIncludes = Args.getAllArgValues(OPT_imacros); 1509 1510 // Add the ordered list of -includes. 1511 for (arg_iterator it = Args.filtered_begin(OPT_include), 1512 ie = Args.filtered_end(); it != ie; ++it) { 1513 const Arg *A = *it; 1514 Opts.Includes.push_back(A->getValue()); 1515 } 1516 1517 for (arg_iterator it = Args.filtered_begin(OPT_chain_include), 1518 ie = Args.filtered_end(); it != ie; ++it) { 1519 const Arg *A = *it; 1520 Opts.ChainedIncludes.push_back(A->getValue()); 1521 } 1522 1523 // Include 'altivec.h' if -faltivec option present 1524 if (Args.hasArg(OPT_faltivec)) 1525 Opts.Includes.push_back("altivec.h"); 1526 1527 for (arg_iterator it = Args.filtered_begin(OPT_remap_file), 1528 ie = Args.filtered_end(); it != ie; ++it) { 1529 const Arg *A = *it; 1530 std::pair<StringRef,StringRef> Split = 1531 StringRef(A->getValue()).split(';'); 1532 1533 if (Split.second.empty()) { 1534 Diags.Report(diag::err_drv_invalid_remap_file) << A->getAsString(Args); 1535 continue; 1536 } 1537 1538 Opts.addRemappedFile(Split.first, Split.second); 1539 } 1540 1541 if (Arg *A = Args.getLastArg(OPT_fobjc_arc_cxxlib_EQ)) { 1542 StringRef Name = A->getValue(); 1543 unsigned Library = llvm::StringSwitch<unsigned>(Name) 1544 .Case("libc++", ARCXX_libcxx) 1545 .Case("libstdc++", ARCXX_libstdcxx) 1546 .Case("none", ARCXX_nolib) 1547 .Default(~0U); 1548 if (Library == ~0U) 1549 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Name; 1550 else 1551 Opts.ObjCXXARCStandardLibrary = (ObjCXXARCStandardLibraryKind)Library; 1552 } 1553 } 1554 1555 static void ParsePreprocessorOutputArgs(PreprocessorOutputOptions &Opts, 1556 ArgList &Args, 1557 frontend::ActionKind Action) { 1558 using namespace options; 1559 1560 switch (Action) { 1561 case frontend::ASTDeclList: 1562 case frontend::ASTDump: 1563 case frontend::ASTPrint: 1564 case frontend::ASTView: 1565 case frontend::EmitAssembly: 1566 case frontend::EmitBC: 1567 case frontend::EmitHTML: 1568 case frontend::EmitLLVM: 1569 case frontend::EmitLLVMOnly: 1570 case frontend::EmitCodeGenOnly: 1571 case frontend::EmitObj: 1572 case frontend::FixIt: 1573 case frontend::GenerateModule: 1574 case frontend::GeneratePCH: 1575 case frontend::GeneratePTH: 1576 case frontend::ParseSyntaxOnly: 1577 case frontend::ModuleFileInfo: 1578 case frontend::PluginAction: 1579 case frontend::PrintDeclContext: 1580 case frontend::RewriteObjC: 1581 case frontend::RewriteTest: 1582 case frontend::RunAnalysis: 1583 case frontend::MigrateSource: 1584 Opts.ShowCPP = 0; 1585 break; 1586 1587 case frontend::DumpRawTokens: 1588 case frontend::DumpTokens: 1589 case frontend::InitOnly: 1590 case frontend::PrintPreamble: 1591 case frontend::PrintPreprocessedInput: 1592 case frontend::RewriteMacros: 1593 case frontend::RunPreprocessorOnly: 1594 Opts.ShowCPP = !Args.hasArg(OPT_dM); 1595 break; 1596 } 1597 1598 Opts.ShowComments = Args.hasArg(OPT_C); 1599 Opts.ShowLineMarkers = !Args.hasArg(OPT_P); 1600 Opts.ShowMacroComments = Args.hasArg(OPT_CC); 1601 Opts.ShowMacros = Args.hasArg(OPT_dM) || Args.hasArg(OPT_dD); 1602 Opts.RewriteIncludes = Args.hasArg(OPT_frewrite_includes); 1603 } 1604 1605 static void ParseTargetArgs(TargetOptions &Opts, ArgList &Args) { 1606 using namespace options; 1607 Opts.ABI = Args.getLastArgValue(OPT_target_abi); 1608 Opts.CXXABI = Args.getLastArgValue(OPT_cxx_abi); 1609 Opts.CPU = Args.getLastArgValue(OPT_target_cpu); 1610 Opts.FPMath = Args.getLastArgValue(OPT_mfpmath); 1611 Opts.FeaturesAsWritten = Args.getAllArgValues(OPT_target_feature); 1612 Opts.LinkerVersion = Args.getLastArgValue(OPT_target_linker_version); 1613 Opts.Triple = llvm::Triple::normalize(Args.getLastArgValue(OPT_triple)); 1614 1615 // Use the default target triple if unspecified. 1616 if (Opts.Triple.empty()) 1617 Opts.Triple = llvm::sys::getDefaultTargetTriple(); 1618 } 1619 1620 // 1621 1622 bool CompilerInvocation::CreateFromArgs(CompilerInvocation &Res, 1623 const char *const *ArgBegin, 1624 const char *const *ArgEnd, 1625 DiagnosticsEngine &Diags) { 1626 bool Success = true; 1627 1628 // Parse the arguments. 1629 OwningPtr<OptTable> Opts(createDriverOptTable()); 1630 const unsigned IncludedFlagsBitmask = options::CC1Option; 1631 unsigned MissingArgIndex, MissingArgCount; 1632 OwningPtr<InputArgList> Args( 1633 Opts->ParseArgs(ArgBegin, ArgEnd, MissingArgIndex, MissingArgCount, 1634 IncludedFlagsBitmask)); 1635 1636 // Check for missing argument error. 1637 if (MissingArgCount) { 1638 Diags.Report(diag::err_drv_missing_argument) 1639 << Args->getArgString(MissingArgIndex) << MissingArgCount; 1640 Success = false; 1641 } 1642 1643 // Issue errors on unknown arguments. 1644 for (arg_iterator it = Args->filtered_begin(OPT_UNKNOWN), 1645 ie = Args->filtered_end(); it != ie; ++it) { 1646 Diags.Report(diag::err_drv_unknown_argument) << (*it)->getAsString(*Args); 1647 Success = false; 1648 } 1649 1650 Success = ParseAnalyzerArgs(*Res.getAnalyzerOpts(), *Args, Diags) && Success; 1651 Success = ParseMigratorArgs(Res.getMigratorOpts(), *Args) && Success; 1652 ParseDependencyOutputArgs(Res.getDependencyOutputOpts(), *Args); 1653 Success = ParseDiagnosticArgs(Res.getDiagnosticOpts(), *Args, &Diags) 1654 && Success; 1655 ParseCommentArgs(Res.getLangOpts()->CommentOpts, *Args); 1656 ParseFileSystemArgs(Res.getFileSystemOpts(), *Args); 1657 // FIXME: We shouldn't have to pass the DashX option around here 1658 InputKind DashX = ParseFrontendArgs(Res.getFrontendOpts(), *Args, Diags); 1659 Success = ParseCodeGenArgs(Res.getCodeGenOpts(), *Args, DashX, Diags) 1660 && Success; 1661 ParseHeaderSearchArgs(Res.getHeaderSearchOpts(), *Args); 1662 if (DashX != IK_AST && DashX != IK_LLVM_IR) { 1663 ParseLangArgs(*Res.getLangOpts(), *Args, DashX, Diags); 1664 if (Res.getFrontendOpts().ProgramAction == frontend::RewriteObjC) 1665 Res.getLangOpts()->ObjCExceptions = 1; 1666 } 1667 // FIXME: ParsePreprocessorArgs uses the FileManager to read the contents of 1668 // PCH file and find the original header name. Remove the need to do that in 1669 // ParsePreprocessorArgs and remove the FileManager 1670 // parameters from the function and the "FileManager.h" #include. 1671 FileManager FileMgr(Res.getFileSystemOpts()); 1672 ParsePreprocessorArgs(Res.getPreprocessorOpts(), *Args, FileMgr, Diags); 1673 ParsePreprocessorOutputArgs(Res.getPreprocessorOutputOpts(), *Args, 1674 Res.getFrontendOpts().ProgramAction); 1675 ParseTargetArgs(Res.getTargetOpts(), *Args); 1676 1677 return Success; 1678 } 1679 1680 namespace { 1681 1682 class ModuleSignature { 1683 SmallVector<uint64_t, 16> Data; 1684 unsigned CurBit; 1685 uint64_t CurValue; 1686 1687 public: 1688 ModuleSignature() : CurBit(0), CurValue(0) { } 1689 1690 void add(uint64_t Value, unsigned Bits); 1691 void add(StringRef Value); 1692 void flush(); 1693 1694 llvm::APInt getAsInteger() const; 1695 }; 1696 } 1697 1698 void ModuleSignature::add(uint64_t Value, unsigned int NumBits) { 1699 CurValue |= Value << CurBit; 1700 if (CurBit + NumBits < 64) { 1701 CurBit += NumBits; 1702 return; 1703 } 1704 1705 // Add the current word. 1706 Data.push_back(CurValue); 1707 1708 if (CurBit) 1709 CurValue = Value >> (64-CurBit); 1710 else 1711 CurValue = 0; 1712 CurBit = (CurBit+NumBits) & 63; 1713 } 1714 1715 void ModuleSignature::flush() { 1716 if (CurBit == 0) 1717 return; 1718 1719 Data.push_back(CurValue); 1720 CurBit = 0; 1721 CurValue = 0; 1722 } 1723 1724 void ModuleSignature::add(StringRef Value) { 1725 for (StringRef::iterator I = Value.begin(), IEnd = Value.end(); I != IEnd;++I) 1726 add(*I, 8); 1727 } 1728 1729 llvm::APInt ModuleSignature::getAsInteger() const { 1730 return llvm::APInt(Data.size() * 64, Data); 1731 } 1732 1733 std::string CompilerInvocation::getModuleHash() const { 1734 // Note: For QoI reasons, the things we use as a hash here should all be 1735 // dumped via the -module-info flag. 1736 using llvm::hash_code; 1737 using llvm::hash_value; 1738 using llvm::hash_combine; 1739 1740 // Start the signature with the compiler version. 1741 // FIXME: We'd rather use something more cryptographically sound than 1742 // CityHash, but this will do for now. 1743 hash_code code = hash_value(getClangFullRepositoryVersion()); 1744 1745 // Extend the signature with the language options 1746 #define LANGOPT(Name, Bits, Default, Description) \ 1747 code = hash_combine(code, LangOpts->Name); 1748 #define ENUM_LANGOPT(Name, Type, Bits, Default, Description) \ 1749 code = hash_combine(code, static_cast<unsigned>(LangOpts->get##Name())); 1750 #define BENIGN_LANGOPT(Name, Bits, Default, Description) 1751 #define BENIGN_ENUM_LANGOPT(Name, Type, Bits, Default, Description) 1752 #include "clang/Basic/LangOptions.def" 1753 1754 // Extend the signature with the target options. 1755 code = hash_combine(code, TargetOpts->Triple, TargetOpts->CPU, 1756 TargetOpts->ABI, TargetOpts->CXXABI, 1757 TargetOpts->LinkerVersion); 1758 for (unsigned i = 0, n = TargetOpts->FeaturesAsWritten.size(); i != n; ++i) 1759 code = hash_combine(code, TargetOpts->FeaturesAsWritten[i]); 1760 1761 // Extend the signature with preprocessor options. 1762 const PreprocessorOptions &ppOpts = getPreprocessorOpts(); 1763 const HeaderSearchOptions &hsOpts = getHeaderSearchOpts(); 1764 code = hash_combine(code, ppOpts.UsePredefines, ppOpts.DetailedRecord); 1765 1766 std::vector<StringRef> MacroDefs; 1767 for (std::vector<std::pair<std::string, bool/*isUndef*/> >::const_iterator 1768 I = getPreprocessorOpts().Macros.begin(), 1769 IEnd = getPreprocessorOpts().Macros.end(); 1770 I != IEnd; ++I) { 1771 // If we're supposed to ignore this macro for the purposes of modules, 1772 // don't put it into the hash. 1773 if (!hsOpts.ModulesIgnoreMacros.empty()) { 1774 // Check whether we're ignoring this macro. 1775 StringRef MacroDef = I->first; 1776 if (hsOpts.ModulesIgnoreMacros.count(MacroDef.split('=').first)) 1777 continue; 1778 } 1779 1780 code = hash_combine(code, I->first, I->second); 1781 } 1782 1783 // Extend the signature with the sysroot. 1784 code = hash_combine(code, hsOpts.Sysroot, hsOpts.UseBuiltinIncludes, 1785 hsOpts.UseStandardSystemIncludes, 1786 hsOpts.UseStandardCXXIncludes, 1787 hsOpts.UseLibcxx); 1788 1789 // Darwin-specific hack: if we have a sysroot, use the contents and 1790 // modification time of 1791 // $sysroot/System/Library/CoreServices/SystemVersion.plist 1792 // as part of the module hash. 1793 if (!hsOpts.Sysroot.empty()) { 1794 llvm::OwningPtr<llvm::MemoryBuffer> buffer; 1795 SmallString<128> systemVersionFile; 1796 systemVersionFile += hsOpts.Sysroot; 1797 llvm::sys::path::append(systemVersionFile, "System"); 1798 llvm::sys::path::append(systemVersionFile, "Library"); 1799 llvm::sys::path::append(systemVersionFile, "CoreServices"); 1800 llvm::sys::path::append(systemVersionFile, "SystemVersion.plist"); 1801 if (!llvm::MemoryBuffer::getFile(systemVersionFile.str(), buffer)) { 1802 code = hash_combine(code, buffer.get()->getBuffer()); 1803 1804 struct stat statBuf; 1805 if (stat(systemVersionFile.c_str(), &statBuf) == 0) 1806 code = hash_combine(code, statBuf.st_mtime); 1807 } 1808 } 1809 1810 return llvm::APInt(64, code).toString(36, /*Signed=*/false); 1811 } 1812 1813 namespace clang { 1814 1815 // Declared in clang/Frontend/Utils.h. 1816 int getLastArgIntValue(const ArgList &Args, OptSpecifier Id, int Default, 1817 DiagnosticsEngine *Diags) { 1818 int Res = Default; 1819 if (Arg *A = Args.getLastArg(Id)) { 1820 if (StringRef(A->getValue()).getAsInteger(10, Res)) { 1821 if (Diags) 1822 Diags->Report(diag::err_drv_invalid_int_value) << A->getAsString(Args) 1823 << A->getValue(); 1824 } 1825 } 1826 return Res; 1827 } 1828 } 1829