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/FileManager.h" 12 #include "clang/Basic/Version.h" 13 #include "clang/Config/config.h" 14 #include "clang/Driver/DriverDiagnostic.h" 15 #include "clang/Driver/Options.h" 16 #include "clang/Driver/Util.h" 17 #include "clang/Frontend/FrontendDiagnostic.h" 18 #include "clang/Frontend/LangStandard.h" 19 #include "clang/Frontend/Utils.h" 20 #include "clang/Lex/HeaderSearchOptions.h" 21 #include "clang/Serialization/ASTReader.h" 22 #include "llvm/ADT/Hashing.h" 23 #include "llvm/ADT/STLExtras.h" 24 #include "llvm/ADT/SmallVector.h" 25 #include "llvm/ADT/StringExtras.h" 26 #include "llvm/ADT/StringSwitch.h" 27 #include "llvm/ADT/Triple.h" 28 #include "llvm/Option/Arg.h" 29 #include "llvm/Option/ArgList.h" 30 #include "llvm/Option/OptTable.h" 31 #include "llvm/Option/Option.h" 32 #include "llvm/Support/CodeGen.h" 33 #include "llvm/Support/ErrorHandling.h" 34 #include "llvm/Support/FileSystem.h" 35 #include "llvm/Support/Host.h" 36 #include "llvm/Support/Path.h" 37 #include "llvm/Support/Process.h" 38 #include <atomic> 39 #include <memory> 40 #include <sys/stat.h> 41 #include <system_error> 42 using namespace clang; 43 44 //===----------------------------------------------------------------------===// 45 // Initialization. 46 //===----------------------------------------------------------------------===// 47 48 CompilerInvocationBase::CompilerInvocationBase() 49 : LangOpts(new LangOptions()), TargetOpts(new TargetOptions()), 50 DiagnosticOpts(new DiagnosticOptions()), 51 HeaderSearchOpts(new HeaderSearchOptions()), 52 PreprocessorOpts(new PreprocessorOptions()) {} 53 54 CompilerInvocationBase::CompilerInvocationBase(const CompilerInvocationBase &X) 55 : RefCountedBase<CompilerInvocation>(), 56 LangOpts(new LangOptions(*X.getLangOpts())), 57 TargetOpts(new TargetOptions(X.getTargetOpts())), 58 DiagnosticOpts(new DiagnosticOptions(X.getDiagnosticOpts())), 59 HeaderSearchOpts(new HeaderSearchOptions(X.getHeaderSearchOpts())), 60 PreprocessorOpts(new PreprocessorOptions(X.getPreprocessorOpts())) {} 61 62 CompilerInvocationBase::~CompilerInvocationBase() {} 63 64 //===----------------------------------------------------------------------===// 65 // Deserialization (from args) 66 //===----------------------------------------------------------------------===// 67 68 using namespace clang::driver; 69 using namespace clang::driver::options; 70 using namespace llvm::opt; 71 72 // 73 74 static unsigned getOptimizationLevel(ArgList &Args, InputKind IK, 75 DiagnosticsEngine &Diags) { 76 unsigned DefaultOpt = 0; 77 if (IK == IK_OpenCL && !Args.hasArg(OPT_cl_opt_disable)) 78 DefaultOpt = 2; 79 80 if (Arg *A = Args.getLastArg(options::OPT_O_Group)) { 81 if (A->getOption().matches(options::OPT_O0)) 82 return 0; 83 84 if (A->getOption().matches(options::OPT_Ofast)) 85 return 3; 86 87 assert (A->getOption().matches(options::OPT_O)); 88 89 StringRef S(A->getValue()); 90 if (S == "s" || S == "z" || S.empty()) 91 return 2; 92 93 return getLastArgIntValue(Args, OPT_O, DefaultOpt, Diags); 94 } 95 96 return DefaultOpt; 97 } 98 99 static unsigned getOptimizationLevelSize(ArgList &Args) { 100 if (Arg *A = Args.getLastArg(options::OPT_O_Group)) { 101 if (A->getOption().matches(options::OPT_O)) { 102 switch (A->getValue()[0]) { 103 default: 104 return 0; 105 case 's': 106 return 1; 107 case 'z': 108 return 2; 109 } 110 } 111 } 112 return 0; 113 } 114 115 static void addDiagnosticArgs(ArgList &Args, OptSpecifier Group, 116 OptSpecifier GroupWithValue, 117 std::vector<std::string> &Diagnostics) { 118 for (Arg *A : Args.filtered(Group)) { 119 if (A->getOption().getKind() == Option::FlagClass) { 120 // The argument is a pure flag (such as OPT_Wall or OPT_Wdeprecated). Add 121 // its name (minus the "W" or "R" at the beginning) to the warning list. 122 Diagnostics.push_back(A->getOption().getName().drop_front(1)); 123 } else if (A->getOption().matches(GroupWithValue)) { 124 // This is -Wfoo= or -Rfoo=, where foo is the name of the diagnostic group. 125 Diagnostics.push_back(A->getOption().getName().drop_front(1).rtrim("=-")); 126 } else { 127 // Otherwise, add its value (for OPT_W_Joined and similar). 128 for (const char *Arg : A->getValues()) 129 Diagnostics.emplace_back(Arg); 130 } 131 } 132 } 133 134 static bool ParseAnalyzerArgs(AnalyzerOptions &Opts, ArgList &Args, 135 DiagnosticsEngine &Diags) { 136 using namespace options; 137 bool Success = true; 138 if (Arg *A = Args.getLastArg(OPT_analyzer_store)) { 139 StringRef Name = A->getValue(); 140 AnalysisStores Value = llvm::StringSwitch<AnalysisStores>(Name) 141 #define ANALYSIS_STORE(NAME, CMDFLAG, DESC, CREATFN) \ 142 .Case(CMDFLAG, NAME##Model) 143 #include "clang/StaticAnalyzer/Core/Analyses.def" 144 .Default(NumStores); 145 if (Value == NumStores) { 146 Diags.Report(diag::err_drv_invalid_value) 147 << A->getAsString(Args) << Name; 148 Success = false; 149 } else { 150 Opts.AnalysisStoreOpt = Value; 151 } 152 } 153 154 if (Arg *A = Args.getLastArg(OPT_analyzer_constraints)) { 155 StringRef Name = A->getValue(); 156 AnalysisConstraints Value = llvm::StringSwitch<AnalysisConstraints>(Name) 157 #define ANALYSIS_CONSTRAINTS(NAME, CMDFLAG, DESC, CREATFN) \ 158 .Case(CMDFLAG, NAME##Model) 159 #include "clang/StaticAnalyzer/Core/Analyses.def" 160 .Default(NumConstraints); 161 if (Value == NumConstraints) { 162 Diags.Report(diag::err_drv_invalid_value) 163 << A->getAsString(Args) << Name; 164 Success = false; 165 } else { 166 Opts.AnalysisConstraintsOpt = Value; 167 } 168 } 169 170 if (Arg *A = Args.getLastArg(OPT_analyzer_output)) { 171 StringRef Name = A->getValue(); 172 AnalysisDiagClients Value = llvm::StringSwitch<AnalysisDiagClients>(Name) 173 #define ANALYSIS_DIAGNOSTICS(NAME, CMDFLAG, DESC, CREATFN) \ 174 .Case(CMDFLAG, PD_##NAME) 175 #include "clang/StaticAnalyzer/Core/Analyses.def" 176 .Default(NUM_ANALYSIS_DIAG_CLIENTS); 177 if (Value == NUM_ANALYSIS_DIAG_CLIENTS) { 178 Diags.Report(diag::err_drv_invalid_value) 179 << A->getAsString(Args) << Name; 180 Success = false; 181 } else { 182 Opts.AnalysisDiagOpt = Value; 183 } 184 } 185 186 if (Arg *A = Args.getLastArg(OPT_analyzer_purge)) { 187 StringRef Name = A->getValue(); 188 AnalysisPurgeMode Value = llvm::StringSwitch<AnalysisPurgeMode>(Name) 189 #define ANALYSIS_PURGE(NAME, CMDFLAG, DESC) \ 190 .Case(CMDFLAG, NAME) 191 #include "clang/StaticAnalyzer/Core/Analyses.def" 192 .Default(NumPurgeModes); 193 if (Value == NumPurgeModes) { 194 Diags.Report(diag::err_drv_invalid_value) 195 << A->getAsString(Args) << Name; 196 Success = false; 197 } else { 198 Opts.AnalysisPurgeOpt = Value; 199 } 200 } 201 202 if (Arg *A = Args.getLastArg(OPT_analyzer_inlining_mode)) { 203 StringRef Name = A->getValue(); 204 AnalysisInliningMode Value = llvm::StringSwitch<AnalysisInliningMode>(Name) 205 #define ANALYSIS_INLINING_MODE(NAME, CMDFLAG, DESC) \ 206 .Case(CMDFLAG, NAME) 207 #include "clang/StaticAnalyzer/Core/Analyses.def" 208 .Default(NumInliningModes); 209 if (Value == NumInliningModes) { 210 Diags.Report(diag::err_drv_invalid_value) 211 << A->getAsString(Args) << Name; 212 Success = false; 213 } else { 214 Opts.InliningMode = Value; 215 } 216 } 217 218 Opts.ShowCheckerHelp = Args.hasArg(OPT_analyzer_checker_help); 219 Opts.DisableAllChecks = Args.hasArg(OPT_analyzer_disable_all_checks); 220 221 Opts.visualizeExplodedGraphWithGraphViz = 222 Args.hasArg(OPT_analyzer_viz_egraph_graphviz); 223 Opts.visualizeExplodedGraphWithUbiGraph = 224 Args.hasArg(OPT_analyzer_viz_egraph_ubigraph); 225 Opts.NoRetryExhausted = Args.hasArg(OPT_analyzer_disable_retry_exhausted); 226 Opts.AnalyzeAll = Args.hasArg(OPT_analyzer_opt_analyze_headers); 227 Opts.AnalyzerDisplayProgress = Args.hasArg(OPT_analyzer_display_progress); 228 Opts.AnalyzeNestedBlocks = 229 Args.hasArg(OPT_analyzer_opt_analyze_nested_blocks); 230 Opts.eagerlyAssumeBinOpBifurcation = Args.hasArg(OPT_analyzer_eagerly_assume); 231 Opts.AnalyzeSpecificFunction = Args.getLastArgValue(OPT_analyze_function); 232 Opts.UnoptimizedCFG = Args.hasArg(OPT_analysis_UnoptimizedCFG); 233 Opts.TrimGraph = Args.hasArg(OPT_trim_egraph); 234 Opts.maxBlockVisitOnPath = 235 getLastArgIntValue(Args, OPT_analyzer_max_loop, 4, Diags); 236 Opts.PrintStats = Args.hasArg(OPT_analyzer_stats); 237 Opts.InlineMaxStackDepth = 238 getLastArgIntValue(Args, OPT_analyzer_inline_max_stack_depth, 239 Opts.InlineMaxStackDepth, Diags); 240 241 Opts.CheckersControlList.clear(); 242 for (const Arg *A : 243 Args.filtered(OPT_analyzer_checker, OPT_analyzer_disable_checker)) { 244 A->claim(); 245 bool enable = (A->getOption().getID() == OPT_analyzer_checker); 246 // We can have a list of comma separated checker names, e.g: 247 // '-analyzer-checker=cocoa,unix' 248 StringRef checkerList = A->getValue(); 249 SmallVector<StringRef, 4> checkers; 250 checkerList.split(checkers, ","); 251 for (StringRef checker : checkers) 252 Opts.CheckersControlList.emplace_back(checker, enable); 253 } 254 255 // Go through the analyzer configuration options. 256 for (const Arg *A : Args.filtered(OPT_analyzer_config)) { 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 std::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 StringRef getCodeModel(ArgList &Args, DiagnosticsEngine &Diags) { 298 if (Arg *A = Args.getLastArg(OPT_mcode_model)) { 299 StringRef Value = A->getValue(); 300 if (Value == "small" || Value == "kernel" || Value == "medium" || 301 Value == "large") 302 return Value; 303 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Value; 304 } 305 return "default"; 306 } 307 308 /// \brief Create a new Regex instance out of the string value in \p RpassArg. 309 /// It returns a pointer to the newly generated Regex instance. 310 static std::shared_ptr<llvm::Regex> 311 GenerateOptimizationRemarkRegex(DiagnosticsEngine &Diags, ArgList &Args, 312 Arg *RpassArg) { 313 StringRef Val = RpassArg->getValue(); 314 std::string RegexError; 315 std::shared_ptr<llvm::Regex> Pattern = std::make_shared<llvm::Regex>(Val); 316 if (!Pattern->isValid(RegexError)) { 317 Diags.Report(diag::err_drv_optimization_remark_pattern) 318 << RegexError << RpassArg->getAsString(Args); 319 Pattern.reset(); 320 } 321 return Pattern; 322 } 323 324 static bool parseDiagnosticLevelMask(StringRef FlagName, 325 const std::vector<std::string> &Levels, 326 DiagnosticsEngine *Diags, 327 DiagnosticLevelMask &M) { 328 bool Success = true; 329 for (const auto &Level : Levels) { 330 DiagnosticLevelMask const PM = 331 llvm::StringSwitch<DiagnosticLevelMask>(Level) 332 .Case("note", DiagnosticLevelMask::Note) 333 .Case("remark", DiagnosticLevelMask::Remark) 334 .Case("warning", DiagnosticLevelMask::Warning) 335 .Case("error", DiagnosticLevelMask::Error) 336 .Default(DiagnosticLevelMask::None); 337 if (PM == DiagnosticLevelMask::None) { 338 Success = false; 339 if (Diags) 340 Diags->Report(diag::err_drv_invalid_value) << FlagName << Level; 341 } 342 M = M | PM; 343 } 344 return Success; 345 } 346 347 static void parseSanitizerKinds(StringRef FlagName, 348 const std::vector<std::string> &Sanitizers, 349 DiagnosticsEngine &Diags, SanitizerSet &S) { 350 for (const auto &Sanitizer : Sanitizers) { 351 SanitizerMask K = parseSanitizerValue(Sanitizer, /*AllowGroups=*/false); 352 if (K == 0) 353 Diags.Report(diag::err_drv_invalid_value) << FlagName << Sanitizer; 354 else 355 S.set(K, true); 356 } 357 } 358 359 static bool ParseCodeGenArgs(CodeGenOptions &Opts, ArgList &Args, InputKind IK, 360 DiagnosticsEngine &Diags, 361 const TargetOptions &TargetOpts) { 362 using namespace options; 363 bool Success = true; 364 365 unsigned OptimizationLevel = getOptimizationLevel(Args, IK, Diags); 366 // TODO: This could be done in Driver 367 unsigned MaxOptLevel = 3; 368 if (OptimizationLevel > MaxOptLevel) { 369 // If the optimization level is not supported, fall back on the default 370 // optimization 371 Diags.Report(diag::warn_drv_optimization_value) 372 << Args.getLastArg(OPT_O)->getAsString(Args) << "-O" << MaxOptLevel; 373 OptimizationLevel = MaxOptLevel; 374 } 375 Opts.OptimizationLevel = OptimizationLevel; 376 377 // We must always run at least the always inlining pass. 378 Opts.setInlining( 379 (Opts.OptimizationLevel > 1) ? CodeGenOptions::NormalInlining 380 : CodeGenOptions::OnlyAlwaysInlining); 381 // -fno-inline-functions overrides OptimizationLevel > 1. 382 Opts.NoInline = Args.hasArg(OPT_fno_inline); 383 Opts.setInlining(Args.hasArg(OPT_fno_inline_functions) ? 384 CodeGenOptions::OnlyAlwaysInlining : Opts.getInlining()); 385 386 if (Arg *A = Args.getLastArg(OPT_fveclib)) { 387 StringRef Name = A->getValue(); 388 if (Name == "Accelerate") 389 Opts.setVecLib(CodeGenOptions::Accelerate); 390 else if (Name == "none") 391 Opts.setVecLib(CodeGenOptions::NoLibrary); 392 else 393 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Name; 394 } 395 396 if (Arg *A = Args.getLastArg(OPT_debug_info_kind_EQ)) { 397 Opts.setDebugInfo( 398 llvm::StringSwitch<CodeGenOptions::DebugInfoKind>(A->getValue()) 399 .Case("line-tables-only", CodeGenOptions::DebugLineTablesOnly) 400 .Case("limited", CodeGenOptions::LimitedDebugInfo) 401 .Case("standalone", CodeGenOptions::FullDebugInfo)); 402 } 403 Opts.DwarfVersion = getLastArgIntValue(Args, OPT_dwarf_version_EQ, 0, Diags); 404 Opts.DebugColumnInfo = Args.hasArg(OPT_dwarf_column_info); 405 Opts.EmitCodeView = Args.hasArg(OPT_gcodeview); 406 Opts.SplitDwarfFile = Args.getLastArgValue(OPT_split_dwarf_file); 407 Opts.DebugTypeExtRefs = Args.hasArg(OPT_dwarf_ext_refs); 408 409 for (const auto &Arg : Args.getAllArgValues(OPT_fdebug_prefix_map_EQ)) 410 Opts.DebugPrefixMap.insert(StringRef(Arg).split('=')); 411 412 if (const Arg *A = 413 Args.getLastArg(OPT_emit_llvm_uselists, OPT_no_emit_llvm_uselists)) 414 Opts.EmitLLVMUseLists = A->getOption().getID() == OPT_emit_llvm_uselists; 415 416 Opts.DisableLLVMOpts = Args.hasArg(OPT_disable_llvm_optzns); 417 Opts.DisableLLVMPasses = Args.hasArg(OPT_disable_llvm_passes); 418 Opts.DisableRedZone = Args.hasArg(OPT_disable_red_zone); 419 Opts.ForbidGuardVariables = Args.hasArg(OPT_fforbid_guard_variables); 420 Opts.UseRegisterSizedBitfieldAccess = Args.hasArg( 421 OPT_fuse_register_sized_bitfield_access); 422 Opts.RelaxedAliasing = Args.hasArg(OPT_relaxed_aliasing); 423 Opts.StructPathTBAA = !Args.hasArg(OPT_no_struct_path_tbaa); 424 Opts.DwarfDebugFlags = Args.getLastArgValue(OPT_dwarf_debug_flags); 425 Opts.MergeAllConstants = !Args.hasArg(OPT_fno_merge_all_constants); 426 Opts.NoCommon = Args.hasArg(OPT_fno_common); 427 Opts.NoImplicitFloat = Args.hasArg(OPT_no_implicit_float); 428 Opts.OptimizeSize = getOptimizationLevelSize(Args); 429 Opts.SimplifyLibCalls = !(Args.hasArg(OPT_fno_builtin) || 430 Args.hasArg(OPT_ffreestanding)); 431 Opts.UnrollLoops = 432 Args.hasFlag(OPT_funroll_loops, OPT_fno_unroll_loops, 433 (Opts.OptimizationLevel > 1 && !Opts.OptimizeSize)); 434 Opts.RerollLoops = Args.hasArg(OPT_freroll_loops); 435 436 Opts.DisableIntegratedAS = Args.hasArg(OPT_fno_integrated_as); 437 Opts.Autolink = !Args.hasArg(OPT_fno_autolink); 438 Opts.SampleProfileFile = Args.getLastArgValue(OPT_fprofile_sample_use_EQ); 439 Opts.ProfileInstrGenerate = Args.hasArg(OPT_fprofile_instr_generate) || 440 Args.hasArg(OPT_fprofile_instr_generate_EQ); 441 Opts.InstrProfileOutput = Args.getLastArgValue(OPT_fprofile_instr_generate_EQ); 442 Opts.InstrProfileInput = Args.getLastArgValue(OPT_fprofile_instr_use_EQ); 443 Opts.CoverageMapping = 444 Args.hasFlag(OPT_fcoverage_mapping, OPT_fno_coverage_mapping, false); 445 Opts.DumpCoverageMapping = Args.hasArg(OPT_dump_coverage_mapping); 446 Opts.AsmVerbose = Args.hasArg(OPT_masm_verbose); 447 Opts.ObjCAutoRefCountExceptions = Args.hasArg(OPT_fobjc_arc_exceptions); 448 Opts.CXAAtExit = !Args.hasArg(OPT_fno_use_cxa_atexit); 449 Opts.CXXCtorDtorAliases = Args.hasArg(OPT_mconstructor_aliases); 450 Opts.CodeModel = getCodeModel(Args, Diags); 451 Opts.DebugPass = Args.getLastArgValue(OPT_mdebug_pass); 452 Opts.DisableFPElim = Args.hasArg(OPT_mdisable_fp_elim); 453 Opts.DisableFree = Args.hasArg(OPT_disable_free); 454 Opts.DisableTailCalls = Args.hasArg(OPT_mdisable_tail_calls); 455 Opts.FloatABI = Args.getLastArgValue(OPT_mfloat_abi); 456 Opts.LessPreciseFPMAD = Args.hasArg(OPT_cl_mad_enable); 457 Opts.LimitFloatPrecision = Args.getLastArgValue(OPT_mlimit_float_precision); 458 Opts.NoInfsFPMath = (Args.hasArg(OPT_menable_no_infinities) || 459 Args.hasArg(OPT_cl_finite_math_only) || 460 Args.hasArg(OPT_cl_fast_relaxed_math)); 461 Opts.NoNaNsFPMath = (Args.hasArg(OPT_menable_no_nans) || 462 Args.hasArg(OPT_cl_unsafe_math_optimizations) || 463 Args.hasArg(OPT_cl_finite_math_only) || 464 Args.hasArg(OPT_cl_fast_relaxed_math)); 465 Opts.NoSignedZeros = Args.hasArg(OPT_fno_signed_zeros); 466 Opts.ReciprocalMath = Args.hasArg(OPT_freciprocal_math); 467 Opts.NoZeroInitializedInBSS = Args.hasArg(OPT_mno_zero_initialized_in_bss); 468 Opts.BackendOptions = Args.getAllArgValues(OPT_backend_option); 469 Opts.NumRegisterParameters = getLastArgIntValue(Args, OPT_mregparm, 0, Diags); 470 Opts.NoExecStack = Args.hasArg(OPT_mno_exec_stack); 471 Opts.FatalWarnings = Args.hasArg(OPT_massembler_fatal_warnings); 472 Opts.EnableSegmentedStacks = Args.hasArg(OPT_split_stacks); 473 Opts.RelaxAll = Args.hasArg(OPT_mrelax_all); 474 Opts.OmitLeafFramePointer = Args.hasArg(OPT_momit_leaf_frame_pointer); 475 Opts.SaveTempLabels = Args.hasArg(OPT_msave_temp_labels); 476 Opts.NoDwarfDirectoryAsm = Args.hasArg(OPT_fno_dwarf_directory_asm); 477 Opts.SoftFloat = Args.hasArg(OPT_msoft_float); 478 Opts.StrictEnums = Args.hasArg(OPT_fstrict_enums); 479 Opts.StrictVTablePointers = Args.hasArg(OPT_fstrict_vtable_pointers); 480 Opts.UnsafeFPMath = Args.hasArg(OPT_menable_unsafe_fp_math) || 481 Args.hasArg(OPT_cl_unsafe_math_optimizations) || 482 Args.hasArg(OPT_cl_fast_relaxed_math); 483 Opts.UnwindTables = Args.hasArg(OPT_munwind_tables); 484 Opts.RelocationModel = Args.getLastArgValue(OPT_mrelocation_model, "pic"); 485 Opts.ThreadModel = Args.getLastArgValue(OPT_mthread_model, "posix"); 486 if (Opts.ThreadModel != "posix" && Opts.ThreadModel != "single") 487 Diags.Report(diag::err_drv_invalid_value) 488 << Args.getLastArg(OPT_mthread_model)->getAsString(Args) 489 << Opts.ThreadModel; 490 Opts.TrapFuncName = Args.getLastArgValue(OPT_ftrap_function_EQ); 491 Opts.UseInitArray = Args.hasArg(OPT_fuse_init_array); 492 493 Opts.FunctionSections = Args.hasFlag(OPT_ffunction_sections, 494 OPT_fno_function_sections, false); 495 Opts.DataSections = Args.hasFlag(OPT_fdata_sections, 496 OPT_fno_data_sections, false); 497 Opts.UniqueSectionNames = Args.hasFlag(OPT_funique_section_names, 498 OPT_fno_unique_section_names, true); 499 500 Opts.MergeFunctions = Args.hasArg(OPT_fmerge_functions); 501 502 Opts.PrepareForLTO = Args.hasArg(OPT_flto, OPT_flto_EQ); 503 const Arg *A = Args.getLastArg(OPT_flto, OPT_flto_EQ); 504 Opts.EmitFunctionSummary = A && A->containsValue("thin"); 505 506 Opts.MSVolatile = Args.hasArg(OPT_fms_volatile); 507 508 Opts.VectorizeBB = Args.hasArg(OPT_vectorize_slp_aggressive); 509 Opts.VectorizeLoop = Args.hasArg(OPT_vectorize_loops); 510 Opts.VectorizeSLP = Args.hasArg(OPT_vectorize_slp); 511 512 Opts.MainFileName = Args.getLastArgValue(OPT_main_file_name); 513 Opts.VerifyModule = !Args.hasArg(OPT_disable_llvm_verifier); 514 515 Opts.DisableGCov = Args.hasArg(OPT_test_coverage); 516 Opts.EmitGcovArcs = Args.hasArg(OPT_femit_coverage_data); 517 Opts.EmitGcovNotes = Args.hasArg(OPT_femit_coverage_notes); 518 if (Opts.EmitGcovArcs || Opts.EmitGcovNotes) { 519 Opts.CoverageFile = Args.getLastArgValue(OPT_coverage_file); 520 Opts.CoverageExtraChecksum = Args.hasArg(OPT_coverage_cfg_checksum); 521 Opts.CoverageNoFunctionNamesInData = 522 Args.hasArg(OPT_coverage_no_function_names_in_data); 523 Opts.CoverageExitBlockBeforeBody = 524 Args.hasArg(OPT_coverage_exit_block_before_body); 525 if (Args.hasArg(OPT_coverage_version_EQ)) { 526 StringRef CoverageVersion = Args.getLastArgValue(OPT_coverage_version_EQ); 527 if (CoverageVersion.size() != 4) { 528 Diags.Report(diag::err_drv_invalid_value) 529 << Args.getLastArg(OPT_coverage_version_EQ)->getAsString(Args) 530 << CoverageVersion; 531 } else { 532 memcpy(Opts.CoverageVersion, CoverageVersion.data(), 4); 533 } 534 } 535 } 536 537 Opts.InstrumentFunctions = Args.hasArg(OPT_finstrument_functions); 538 Opts.InstrumentForProfiling = Args.hasArg(OPT_pg); 539 Opts.EmitOpenCLArgMetadata = Args.hasArg(OPT_cl_kernel_arg_info); 540 Opts.CompressDebugSections = Args.hasArg(OPT_compress_debug_sections); 541 Opts.DebugCompilationDir = Args.getLastArgValue(OPT_fdebug_compilation_dir); 542 Opts.LinkBitcodeFile = Args.getLastArgValue(OPT_mlink_bitcode_file); 543 Opts.SanitizeCoverageType = 544 getLastArgIntValue(Args, OPT_fsanitize_coverage_type, 0, Diags); 545 Opts.SanitizeCoverageIndirectCalls = 546 Args.hasArg(OPT_fsanitize_coverage_indirect_calls); 547 Opts.SanitizeCoverageTraceBB = Args.hasArg(OPT_fsanitize_coverage_trace_bb); 548 Opts.SanitizeCoverageTraceCmp = Args.hasArg(OPT_fsanitize_coverage_trace_cmp); 549 Opts.SanitizeCoverage8bitCounters = 550 Args.hasArg(OPT_fsanitize_coverage_8bit_counters); 551 Opts.SanitizeMemoryTrackOrigins = 552 getLastArgIntValue(Args, OPT_fsanitize_memory_track_origins_EQ, 0, Diags); 553 Opts.SanitizeMemoryUseAfterDtor = 554 Args.hasArg(OPT_fsanitize_memory_use_after_dtor); 555 Opts.SSPBufferSize = 556 getLastArgIntValue(Args, OPT_stack_protector_buffer_size, 8, Diags); 557 Opts.StackRealignment = Args.hasArg(OPT_mstackrealign); 558 if (Arg *A = Args.getLastArg(OPT_mstack_alignment)) { 559 StringRef Val = A->getValue(); 560 unsigned StackAlignment = Opts.StackAlignment; 561 Val.getAsInteger(10, StackAlignment); 562 Opts.StackAlignment = StackAlignment; 563 } 564 565 if (Arg *A = Args.getLastArg(OPT_mstack_probe_size)) { 566 StringRef Val = A->getValue(); 567 unsigned StackProbeSize = Opts.StackProbeSize; 568 Val.getAsInteger(0, StackProbeSize); 569 Opts.StackProbeSize = StackProbeSize; 570 } 571 572 if (Arg *A = Args.getLastArg(OPT_fobjc_dispatch_method_EQ)) { 573 StringRef Name = A->getValue(); 574 unsigned Method = llvm::StringSwitch<unsigned>(Name) 575 .Case("legacy", CodeGenOptions::Legacy) 576 .Case("non-legacy", CodeGenOptions::NonLegacy) 577 .Case("mixed", CodeGenOptions::Mixed) 578 .Default(~0U); 579 if (Method == ~0U) { 580 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Name; 581 Success = false; 582 } else { 583 Opts.setObjCDispatchMethod( 584 static_cast<CodeGenOptions::ObjCDispatchMethodKind>(Method)); 585 } 586 } 587 588 Opts.EmulatedTLS = 589 Args.hasFlag(OPT_femulated_tls, OPT_fno_emulated_tls, false); 590 591 if (Arg *A = Args.getLastArg(OPT_ftlsmodel_EQ)) { 592 StringRef Name = A->getValue(); 593 unsigned Model = llvm::StringSwitch<unsigned>(Name) 594 .Case("global-dynamic", CodeGenOptions::GeneralDynamicTLSModel) 595 .Case("local-dynamic", CodeGenOptions::LocalDynamicTLSModel) 596 .Case("initial-exec", CodeGenOptions::InitialExecTLSModel) 597 .Case("local-exec", CodeGenOptions::LocalExecTLSModel) 598 .Default(~0U); 599 if (Model == ~0U) { 600 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Name; 601 Success = false; 602 } else { 603 Opts.setDefaultTLSModel(static_cast<CodeGenOptions::TLSModel>(Model)); 604 } 605 } 606 607 if (Arg *A = Args.getLastArg(OPT_ffp_contract)) { 608 StringRef Val = A->getValue(); 609 if (Val == "fast") 610 Opts.setFPContractMode(CodeGenOptions::FPC_Fast); 611 else if (Val == "on") 612 Opts.setFPContractMode(CodeGenOptions::FPC_On); 613 else if (Val == "off") 614 Opts.setFPContractMode(CodeGenOptions::FPC_Off); 615 else 616 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Val; 617 } 618 619 if (Arg *A = Args.getLastArg(OPT_fpcc_struct_return, OPT_freg_struct_return)) { 620 if (A->getOption().matches(OPT_fpcc_struct_return)) { 621 Opts.setStructReturnConvention(CodeGenOptions::SRCK_OnStack); 622 } else { 623 assert(A->getOption().matches(OPT_freg_struct_return)); 624 Opts.setStructReturnConvention(CodeGenOptions::SRCK_InRegs); 625 } 626 } 627 628 Opts.DependentLibraries = Args.getAllArgValues(OPT_dependent_lib); 629 bool NeedLocTracking = false; 630 631 if (Arg *A = Args.getLastArg(OPT_Rpass_EQ)) { 632 Opts.OptimizationRemarkPattern = 633 GenerateOptimizationRemarkRegex(Diags, Args, A); 634 NeedLocTracking = true; 635 } 636 637 if (Arg *A = Args.getLastArg(OPT_Rpass_missed_EQ)) { 638 Opts.OptimizationRemarkMissedPattern = 639 GenerateOptimizationRemarkRegex(Diags, Args, A); 640 NeedLocTracking = true; 641 } 642 643 if (Arg *A = Args.getLastArg(OPT_Rpass_analysis_EQ)) { 644 Opts.OptimizationRemarkAnalysisPattern = 645 GenerateOptimizationRemarkRegex(Diags, Args, A); 646 NeedLocTracking = true; 647 } 648 649 // If the user requested to use a sample profile for PGO, then the 650 // backend will need to track source location information so the profile 651 // can be incorporated into the IR. 652 if (!Opts.SampleProfileFile.empty()) 653 NeedLocTracking = true; 654 655 // If the user requested a flag that requires source locations available in 656 // the backend, make sure that the backend tracks source location information. 657 if (NeedLocTracking && Opts.getDebugInfo() == CodeGenOptions::NoDebugInfo) 658 Opts.setDebugInfo(CodeGenOptions::LocTrackingOnly); 659 660 Opts.RewriteMapFiles = Args.getAllArgValues(OPT_frewrite_map_file); 661 662 // Parse -fsanitize-recover= arguments. 663 // FIXME: Report unrecoverable sanitizers incorrectly specified here. 664 parseSanitizerKinds("-fsanitize-recover=", 665 Args.getAllArgValues(OPT_fsanitize_recover_EQ), Diags, 666 Opts.SanitizeRecover); 667 parseSanitizerKinds("-fsanitize-trap=", 668 Args.getAllArgValues(OPT_fsanitize_trap_EQ), Diags, 669 Opts.SanitizeTrap); 670 671 Opts.CudaGpuBinaryFileNames = 672 Args.getAllArgValues(OPT_fcuda_include_gpubinary); 673 674 return Success; 675 } 676 677 static void ParseDependencyOutputArgs(DependencyOutputOptions &Opts, 678 ArgList &Args) { 679 using namespace options; 680 Opts.OutputFile = Args.getLastArgValue(OPT_dependency_file); 681 Opts.Targets = Args.getAllArgValues(OPT_MT); 682 Opts.IncludeSystemHeaders = Args.hasArg(OPT_sys_header_deps); 683 Opts.IncludeModuleFiles = Args.hasArg(OPT_module_file_deps); 684 Opts.UsePhonyTargets = Args.hasArg(OPT_MP); 685 Opts.ShowHeaderIncludes = Args.hasArg(OPT_H); 686 Opts.HeaderIncludeOutputFile = Args.getLastArgValue(OPT_header_include_file); 687 Opts.AddMissingHeaderDeps = Args.hasArg(OPT_MG); 688 Opts.PrintShowIncludes = Args.hasArg(OPT_show_includes); 689 Opts.DOTOutputFile = Args.getLastArgValue(OPT_dependency_dot); 690 Opts.ModuleDependencyOutputDir = 691 Args.getLastArgValue(OPT_module_dependency_dir); 692 if (Args.hasArg(OPT_MV)) 693 Opts.OutputFormat = DependencyOutputFormat::NMake; 694 // Add sanitizer blacklists as extra dependencies. 695 // They won't be discovered by the regular preprocessor, so 696 // we let make / ninja to know about this implicit dependency. 697 Opts.ExtraDeps = Args.getAllArgValues(OPT_fdepfile_entry); 698 auto ModuleFiles = Args.getAllArgValues(OPT_fmodule_file); 699 Opts.ExtraDeps.insert(Opts.ExtraDeps.end(), ModuleFiles.begin(), 700 ModuleFiles.end()); 701 } 702 703 bool clang::ParseDiagnosticArgs(DiagnosticOptions &Opts, ArgList &Args, 704 DiagnosticsEngine *Diags) { 705 using namespace options; 706 bool Success = true; 707 708 Opts.DiagnosticLogFile = Args.getLastArgValue(OPT_diagnostic_log_file); 709 if (Arg *A = 710 Args.getLastArg(OPT_diagnostic_serialized_file, OPT__serialize_diags)) 711 Opts.DiagnosticSerializationFile = A->getValue(); 712 Opts.IgnoreWarnings = Args.hasArg(OPT_w); 713 Opts.NoRewriteMacros = Args.hasArg(OPT_Wno_rewrite_macros); 714 Opts.Pedantic = Args.hasArg(OPT_pedantic); 715 Opts.PedanticErrors = Args.hasArg(OPT_pedantic_errors); 716 Opts.ShowCarets = !Args.hasArg(OPT_fno_caret_diagnostics); 717 Opts.ShowColors = Args.hasArg(OPT_fcolor_diagnostics); 718 Opts.ShowColumn = Args.hasFlag(OPT_fshow_column, 719 OPT_fno_show_column, 720 /*Default=*/true); 721 Opts.ShowFixits = !Args.hasArg(OPT_fno_diagnostics_fixit_info); 722 Opts.ShowLocation = !Args.hasArg(OPT_fno_show_source_location); 723 Opts.ShowOptionNames = Args.hasArg(OPT_fdiagnostics_show_option); 724 725 llvm::sys::Process::UseANSIEscapeCodes(Args.hasArg(OPT_fansi_escape_codes)); 726 727 // Default behavior is to not to show note include stacks. 728 Opts.ShowNoteIncludeStack = false; 729 if (Arg *A = Args.getLastArg(OPT_fdiagnostics_show_note_include_stack, 730 OPT_fno_diagnostics_show_note_include_stack)) 731 if (A->getOption().matches(OPT_fdiagnostics_show_note_include_stack)) 732 Opts.ShowNoteIncludeStack = true; 733 734 StringRef ShowOverloads = 735 Args.getLastArgValue(OPT_fshow_overloads_EQ, "all"); 736 if (ShowOverloads == "best") 737 Opts.setShowOverloads(Ovl_Best); 738 else if (ShowOverloads == "all") 739 Opts.setShowOverloads(Ovl_All); 740 else { 741 Success = false; 742 if (Diags) 743 Diags->Report(diag::err_drv_invalid_value) 744 << Args.getLastArg(OPT_fshow_overloads_EQ)->getAsString(Args) 745 << ShowOverloads; 746 } 747 748 StringRef ShowCategory = 749 Args.getLastArgValue(OPT_fdiagnostics_show_category, "none"); 750 if (ShowCategory == "none") 751 Opts.ShowCategories = 0; 752 else if (ShowCategory == "id") 753 Opts.ShowCategories = 1; 754 else if (ShowCategory == "name") 755 Opts.ShowCategories = 2; 756 else { 757 Success = false; 758 if (Diags) 759 Diags->Report(diag::err_drv_invalid_value) 760 << Args.getLastArg(OPT_fdiagnostics_show_category)->getAsString(Args) 761 << ShowCategory; 762 } 763 764 StringRef Format = 765 Args.getLastArgValue(OPT_fdiagnostics_format, "clang"); 766 if (Format == "clang") 767 Opts.setFormat(DiagnosticOptions::Clang); 768 else if (Format == "msvc") 769 Opts.setFormat(DiagnosticOptions::MSVC); 770 else if (Format == "msvc-fallback") { 771 Opts.setFormat(DiagnosticOptions::MSVC); 772 Opts.CLFallbackMode = true; 773 } else if (Format == "vi") 774 Opts.setFormat(DiagnosticOptions::Vi); 775 else { 776 Success = false; 777 if (Diags) 778 Diags->Report(diag::err_drv_invalid_value) 779 << Args.getLastArg(OPT_fdiagnostics_format)->getAsString(Args) 780 << Format; 781 } 782 783 Opts.ShowSourceRanges = Args.hasArg(OPT_fdiagnostics_print_source_range_info); 784 Opts.ShowParseableFixits = Args.hasArg(OPT_fdiagnostics_parseable_fixits); 785 Opts.ShowPresumedLoc = !Args.hasArg(OPT_fno_diagnostics_use_presumed_location); 786 Opts.VerifyDiagnostics = Args.hasArg(OPT_verify); 787 DiagnosticLevelMask DiagMask = DiagnosticLevelMask::None; 788 Success &= parseDiagnosticLevelMask("-verify-ignore-unexpected=", 789 Args.getAllArgValues(OPT_verify_ignore_unexpected_EQ), 790 Diags, DiagMask); 791 if (Args.hasArg(OPT_verify_ignore_unexpected)) 792 DiagMask = DiagnosticLevelMask::All; 793 Opts.setVerifyIgnoreUnexpected(DiagMask); 794 Opts.ElideType = !Args.hasArg(OPT_fno_elide_type); 795 Opts.ShowTemplateTree = Args.hasArg(OPT_fdiagnostics_show_template_tree); 796 Opts.ErrorLimit = getLastArgIntValue(Args, OPT_ferror_limit, 0, Diags); 797 Opts.MacroBacktraceLimit = 798 getLastArgIntValue(Args, OPT_fmacro_backtrace_limit, 799 DiagnosticOptions::DefaultMacroBacktraceLimit, Diags); 800 Opts.TemplateBacktraceLimit = getLastArgIntValue( 801 Args, OPT_ftemplate_backtrace_limit, 802 DiagnosticOptions::DefaultTemplateBacktraceLimit, Diags); 803 Opts.ConstexprBacktraceLimit = getLastArgIntValue( 804 Args, OPT_fconstexpr_backtrace_limit, 805 DiagnosticOptions::DefaultConstexprBacktraceLimit, Diags); 806 Opts.SpellCheckingLimit = getLastArgIntValue( 807 Args, OPT_fspell_checking_limit, 808 DiagnosticOptions::DefaultSpellCheckingLimit, Diags); 809 Opts.TabStop = getLastArgIntValue(Args, OPT_ftabstop, 810 DiagnosticOptions::DefaultTabStop, Diags); 811 if (Opts.TabStop == 0 || Opts.TabStop > DiagnosticOptions::MaxTabStop) { 812 Opts.TabStop = DiagnosticOptions::DefaultTabStop; 813 if (Diags) 814 Diags->Report(diag::warn_ignoring_ftabstop_value) 815 << Opts.TabStop << DiagnosticOptions::DefaultTabStop; 816 } 817 Opts.MessageLength = getLastArgIntValue(Args, OPT_fmessage_length, 0, Diags); 818 addDiagnosticArgs(Args, OPT_W_Group, OPT_W_value_Group, Opts.Warnings); 819 addDiagnosticArgs(Args, OPT_R_Group, OPT_R_value_Group, Opts.Remarks); 820 821 return Success; 822 } 823 824 static void ParseFileSystemArgs(FileSystemOptions &Opts, ArgList &Args) { 825 Opts.WorkingDir = Args.getLastArgValue(OPT_working_directory); 826 } 827 828 static InputKind ParseFrontendArgs(FrontendOptions &Opts, ArgList &Args, 829 DiagnosticsEngine &Diags) { 830 using namespace options; 831 Opts.ProgramAction = frontend::ParseSyntaxOnly; 832 if (const Arg *A = Args.getLastArg(OPT_Action_Group)) { 833 switch (A->getOption().getID()) { 834 default: 835 llvm_unreachable("Invalid option in group!"); 836 case OPT_ast_list: 837 Opts.ProgramAction = frontend::ASTDeclList; break; 838 case OPT_ast_dump: 839 case OPT_ast_dump_lookups: 840 Opts.ProgramAction = frontend::ASTDump; break; 841 case OPT_ast_print: 842 Opts.ProgramAction = frontend::ASTPrint; break; 843 case OPT_ast_view: 844 Opts.ProgramAction = frontend::ASTView; break; 845 case OPT_dump_raw_tokens: 846 Opts.ProgramAction = frontend::DumpRawTokens; break; 847 case OPT_dump_tokens: 848 Opts.ProgramAction = frontend::DumpTokens; break; 849 case OPT_S: 850 Opts.ProgramAction = frontend::EmitAssembly; break; 851 case OPT_emit_llvm_bc: 852 Opts.ProgramAction = frontend::EmitBC; break; 853 case OPT_emit_html: 854 Opts.ProgramAction = frontend::EmitHTML; break; 855 case OPT_emit_llvm: 856 Opts.ProgramAction = frontend::EmitLLVM; break; 857 case OPT_emit_llvm_only: 858 Opts.ProgramAction = frontend::EmitLLVMOnly; break; 859 case OPT_emit_codegen_only: 860 Opts.ProgramAction = frontend::EmitCodeGenOnly; break; 861 case OPT_emit_obj: 862 Opts.ProgramAction = frontend::EmitObj; break; 863 case OPT_fixit_EQ: 864 Opts.FixItSuffix = A->getValue(); 865 // fall-through! 866 case OPT_fixit: 867 Opts.ProgramAction = frontend::FixIt; break; 868 case OPT_emit_module: 869 Opts.ProgramAction = frontend::GenerateModule; break; 870 case OPT_emit_pch: 871 Opts.ProgramAction = frontend::GeneratePCH; break; 872 case OPT_emit_pth: 873 Opts.ProgramAction = frontend::GeneratePTH; break; 874 case OPT_init_only: 875 Opts.ProgramAction = frontend::InitOnly; break; 876 case OPT_fsyntax_only: 877 Opts.ProgramAction = frontend::ParseSyntaxOnly; break; 878 case OPT_module_file_info: 879 Opts.ProgramAction = frontend::ModuleFileInfo; break; 880 case OPT_verify_pch: 881 Opts.ProgramAction = frontend::VerifyPCH; break; 882 case OPT_print_decl_contexts: 883 Opts.ProgramAction = frontend::PrintDeclContext; break; 884 case OPT_print_preamble: 885 Opts.ProgramAction = frontend::PrintPreamble; break; 886 case OPT_E: 887 Opts.ProgramAction = frontend::PrintPreprocessedInput; break; 888 case OPT_rewrite_macros: 889 Opts.ProgramAction = frontend::RewriteMacros; break; 890 case OPT_rewrite_objc: 891 Opts.ProgramAction = frontend::RewriteObjC; break; 892 case OPT_rewrite_test: 893 Opts.ProgramAction = frontend::RewriteTest; break; 894 case OPT_analyze: 895 Opts.ProgramAction = frontend::RunAnalysis; break; 896 case OPT_migrate: 897 Opts.ProgramAction = frontend::MigrateSource; break; 898 case OPT_Eonly: 899 Opts.ProgramAction = frontend::RunPreprocessorOnly; break; 900 } 901 } 902 903 if (const Arg* A = Args.getLastArg(OPT_plugin)) { 904 Opts.Plugins.emplace_back(A->getValue(0)); 905 Opts.ProgramAction = frontend::PluginAction; 906 Opts.ActionName = A->getValue(); 907 908 for (const Arg *AA : Args.filtered(OPT_plugin_arg)) 909 if (AA->getValue(0) == Opts.ActionName) 910 Opts.PluginArgs.emplace_back(AA->getValue(1)); 911 } 912 913 Opts.AddPluginActions = Args.getAllArgValues(OPT_add_plugin); 914 Opts.AddPluginArgs.resize(Opts.AddPluginActions.size()); 915 for (int i = 0, e = Opts.AddPluginActions.size(); i != e; ++i) 916 for (const Arg *A : Args.filtered(OPT_plugin_arg)) 917 if (A->getValue(0) == Opts.AddPluginActions[i]) 918 Opts.AddPluginArgs[i].emplace_back(A->getValue(1)); 919 920 if (const Arg *A = Args.getLastArg(OPT_code_completion_at)) { 921 Opts.CodeCompletionAt = 922 ParsedSourceLocation::FromString(A->getValue()); 923 if (Opts.CodeCompletionAt.FileName.empty()) 924 Diags.Report(diag::err_drv_invalid_value) 925 << A->getAsString(Args) << A->getValue(); 926 } 927 Opts.DisableFree = Args.hasArg(OPT_disable_free); 928 929 Opts.OutputFile = Args.getLastArgValue(OPT_o); 930 Opts.Plugins = Args.getAllArgValues(OPT_load); 931 Opts.RelocatablePCH = Args.hasArg(OPT_relocatable_pch); 932 Opts.ShowHelp = Args.hasArg(OPT_help); 933 Opts.ShowStats = Args.hasArg(OPT_print_stats); 934 Opts.ShowTimers = Args.hasArg(OPT_ftime_report); 935 Opts.ShowVersion = Args.hasArg(OPT_version); 936 Opts.ASTMergeFiles = Args.getAllArgValues(OPT_ast_merge); 937 Opts.LLVMArgs = Args.getAllArgValues(OPT_mllvm); 938 Opts.FixWhatYouCan = Args.hasArg(OPT_fix_what_you_can); 939 Opts.FixOnlyWarnings = Args.hasArg(OPT_fix_only_warnings); 940 Opts.FixAndRecompile = Args.hasArg(OPT_fixit_recompile); 941 Opts.FixToTemporaries = Args.hasArg(OPT_fixit_to_temp); 942 Opts.ASTDumpDecls = Args.hasArg(OPT_ast_dump); 943 Opts.ASTDumpFilter = Args.getLastArgValue(OPT_ast_dump_filter); 944 Opts.ASTDumpLookups = Args.hasArg(OPT_ast_dump_lookups); 945 Opts.UseGlobalModuleIndex = !Args.hasArg(OPT_fno_modules_global_index); 946 Opts.GenerateGlobalModuleIndex = Opts.UseGlobalModuleIndex; 947 Opts.ModuleMapFiles = Args.getAllArgValues(OPT_fmodule_map_file); 948 Opts.ModuleFiles = Args.getAllArgValues(OPT_fmodule_file); 949 Opts.ModulesEmbedFiles = Args.getAllArgValues(OPT_fmodules_embed_file_EQ); 950 951 Opts.CodeCompleteOpts.IncludeMacros 952 = Args.hasArg(OPT_code_completion_macros); 953 Opts.CodeCompleteOpts.IncludeCodePatterns 954 = Args.hasArg(OPT_code_completion_patterns); 955 Opts.CodeCompleteOpts.IncludeGlobals 956 = !Args.hasArg(OPT_no_code_completion_globals); 957 Opts.CodeCompleteOpts.IncludeBriefComments 958 = Args.hasArg(OPT_code_completion_brief_comments); 959 960 Opts.OverrideRecordLayoutsFile 961 = Args.getLastArgValue(OPT_foverride_record_layout_EQ); 962 Opts.AuxTriple = 963 llvm::Triple::normalize(Args.getLastArgValue(OPT_aux_triple)); 964 965 if (const Arg *A = Args.getLastArg(OPT_arcmt_check, 966 OPT_arcmt_modify, 967 OPT_arcmt_migrate)) { 968 switch (A->getOption().getID()) { 969 default: 970 llvm_unreachable("missed a case"); 971 case OPT_arcmt_check: 972 Opts.ARCMTAction = FrontendOptions::ARCMT_Check; 973 break; 974 case OPT_arcmt_modify: 975 Opts.ARCMTAction = FrontendOptions::ARCMT_Modify; 976 break; 977 case OPT_arcmt_migrate: 978 Opts.ARCMTAction = FrontendOptions::ARCMT_Migrate; 979 break; 980 } 981 } 982 Opts.MTMigrateDir = Args.getLastArgValue(OPT_mt_migrate_directory); 983 Opts.ARCMTMigrateReportOut 984 = Args.getLastArgValue(OPT_arcmt_migrate_report_output); 985 Opts.ARCMTMigrateEmitARCErrors 986 = Args.hasArg(OPT_arcmt_migrate_emit_arc_errors); 987 988 if (Args.hasArg(OPT_objcmt_migrate_literals)) 989 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_Literals; 990 if (Args.hasArg(OPT_objcmt_migrate_subscripting)) 991 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_Subscripting; 992 if (Args.hasArg(OPT_objcmt_migrate_property_dot_syntax)) 993 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_PropertyDotSyntax; 994 if (Args.hasArg(OPT_objcmt_migrate_property)) 995 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_Property; 996 if (Args.hasArg(OPT_objcmt_migrate_readonly_property)) 997 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_ReadonlyProperty; 998 if (Args.hasArg(OPT_objcmt_migrate_readwrite_property)) 999 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_ReadwriteProperty; 1000 if (Args.hasArg(OPT_objcmt_migrate_annotation)) 1001 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_Annotation; 1002 if (Args.hasArg(OPT_objcmt_returns_innerpointer_property)) 1003 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_ReturnsInnerPointerProperty; 1004 if (Args.hasArg(OPT_objcmt_migrate_instancetype)) 1005 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_Instancetype; 1006 if (Args.hasArg(OPT_objcmt_migrate_nsmacros)) 1007 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_NsMacros; 1008 if (Args.hasArg(OPT_objcmt_migrate_protocol_conformance)) 1009 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_ProtocolConformance; 1010 if (Args.hasArg(OPT_objcmt_atomic_property)) 1011 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_AtomicProperty; 1012 if (Args.hasArg(OPT_objcmt_ns_nonatomic_iosonly)) 1013 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_NsAtomicIOSOnlyProperty; 1014 if (Args.hasArg(OPT_objcmt_migrate_designated_init)) 1015 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_DesignatedInitializer; 1016 if (Args.hasArg(OPT_objcmt_migrate_all)) 1017 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_MigrateDecls; 1018 1019 Opts.ObjCMTWhiteListPath = Args.getLastArgValue(OPT_objcmt_whitelist_dir_path); 1020 1021 if (Opts.ARCMTAction != FrontendOptions::ARCMT_None && 1022 Opts.ObjCMTAction != FrontendOptions::ObjCMT_None) { 1023 Diags.Report(diag::err_drv_argument_not_allowed_with) 1024 << "ARC migration" << "ObjC migration"; 1025 } 1026 1027 InputKind DashX = IK_None; 1028 if (const Arg *A = Args.getLastArg(OPT_x)) { 1029 DashX = llvm::StringSwitch<InputKind>(A->getValue()) 1030 .Case("c", IK_C) 1031 .Case("cl", IK_OpenCL) 1032 .Case("cuda", IK_CUDA) 1033 .Case("c++", IK_CXX) 1034 .Case("objective-c", IK_ObjC) 1035 .Case("objective-c++", IK_ObjCXX) 1036 .Case("cpp-output", IK_PreprocessedC) 1037 .Case("assembler-with-cpp", IK_Asm) 1038 .Case("c++-cpp-output", IK_PreprocessedCXX) 1039 .Case("cuda-cpp-output", IK_PreprocessedCuda) 1040 .Case("objective-c-cpp-output", IK_PreprocessedObjC) 1041 .Case("objc-cpp-output", IK_PreprocessedObjC) 1042 .Case("objective-c++-cpp-output", IK_PreprocessedObjCXX) 1043 .Case("objc++-cpp-output", IK_PreprocessedObjCXX) 1044 .Case("c-header", IK_C) 1045 .Case("cl-header", IK_OpenCL) 1046 .Case("objective-c-header", IK_ObjC) 1047 .Case("c++-header", IK_CXX) 1048 .Case("objective-c++-header", IK_ObjCXX) 1049 .Cases("ast", "pcm", IK_AST) 1050 .Case("ir", IK_LLVM_IR) 1051 .Default(IK_None); 1052 if (DashX == IK_None) 1053 Diags.Report(diag::err_drv_invalid_value) 1054 << A->getAsString(Args) << A->getValue(); 1055 } 1056 1057 // '-' is the default input if none is given. 1058 std::vector<std::string> Inputs = Args.getAllArgValues(OPT_INPUT); 1059 Opts.Inputs.clear(); 1060 if (Inputs.empty()) 1061 Inputs.push_back("-"); 1062 for (unsigned i = 0, e = Inputs.size(); i != e; ++i) { 1063 InputKind IK = DashX; 1064 if (IK == IK_None) { 1065 IK = FrontendOptions::getInputKindForExtension( 1066 StringRef(Inputs[i]).rsplit('.').second); 1067 // FIXME: Remove this hack. 1068 if (i == 0) 1069 DashX = IK; 1070 } 1071 Opts.Inputs.emplace_back(std::move(Inputs[i]), IK); 1072 } 1073 1074 return DashX; 1075 } 1076 1077 std::string CompilerInvocation::GetResourcesPath(const char *Argv0, 1078 void *MainAddr) { 1079 std::string ClangExecutable = 1080 llvm::sys::fs::getMainExecutable(Argv0, MainAddr); 1081 StringRef Dir = llvm::sys::path::parent_path(ClangExecutable); 1082 1083 // Compute the path to the resource directory. 1084 StringRef ClangResourceDir(CLANG_RESOURCE_DIR); 1085 SmallString<128> P(Dir); 1086 if (ClangResourceDir != "") 1087 llvm::sys::path::append(P, ClangResourceDir); 1088 else 1089 llvm::sys::path::append(P, "..", Twine("lib") + CLANG_LIBDIR_SUFFIX, 1090 "clang", CLANG_VERSION_STRING); 1091 1092 return P.str(); 1093 } 1094 1095 static void ParseHeaderSearchArgs(HeaderSearchOptions &Opts, ArgList &Args) { 1096 using namespace options; 1097 Opts.Sysroot = Args.getLastArgValue(OPT_isysroot, "/"); 1098 Opts.Verbose = Args.hasArg(OPT_v); 1099 Opts.UseBuiltinIncludes = !Args.hasArg(OPT_nobuiltininc); 1100 Opts.UseStandardSystemIncludes = !Args.hasArg(OPT_nostdsysteminc); 1101 Opts.UseStandardCXXIncludes = !Args.hasArg(OPT_nostdincxx); 1102 if (const Arg *A = Args.getLastArg(OPT_stdlib_EQ)) 1103 Opts.UseLibcxx = (strcmp(A->getValue(), "libc++") == 0); 1104 Opts.ResourceDir = Args.getLastArgValue(OPT_resource_dir); 1105 Opts.ModuleCachePath = Args.getLastArgValue(OPT_fmodules_cache_path); 1106 Opts.ModuleUserBuildPath = Args.getLastArgValue(OPT_fmodules_user_build_path); 1107 Opts.DisableModuleHash = Args.hasArg(OPT_fdisable_module_hash); 1108 Opts.ImplicitModuleMaps = Args.hasArg(OPT_fimplicit_module_maps); 1109 Opts.ModuleMapFileHomeIsCwd = Args.hasArg(OPT_fmodule_map_file_home_is_cwd); 1110 Opts.ModuleCachePruneInterval = 1111 getLastArgIntValue(Args, OPT_fmodules_prune_interval, 7 * 24 * 60 * 60); 1112 Opts.ModuleCachePruneAfter = 1113 getLastArgIntValue(Args, OPT_fmodules_prune_after, 31 * 24 * 60 * 60); 1114 Opts.ModulesValidateOncePerBuildSession = 1115 Args.hasArg(OPT_fmodules_validate_once_per_build_session); 1116 Opts.BuildSessionTimestamp = 1117 getLastArgUInt64Value(Args, OPT_fbuild_session_timestamp, 0); 1118 Opts.ModulesValidateSystemHeaders = 1119 Args.hasArg(OPT_fmodules_validate_system_headers); 1120 if (const Arg *A = Args.getLastArg(OPT_fmodule_format_EQ)) 1121 Opts.ModuleFormat = A->getValue(); 1122 1123 for (const Arg *A : Args.filtered(OPT_fmodules_ignore_macro)) { 1124 StringRef MacroDef = A->getValue(); 1125 Opts.ModulesIgnoreMacros.insert(MacroDef.split('=').first); 1126 } 1127 1128 // Add -I..., -F..., and -index-header-map options in order. 1129 bool IsIndexHeaderMap = false; 1130 for (const Arg *A : Args.filtered(OPT_I, OPT_F, OPT_index_header_map)) { 1131 if (A->getOption().matches(OPT_index_header_map)) { 1132 // -index-header-map applies to the next -I or -F. 1133 IsIndexHeaderMap = true; 1134 continue; 1135 } 1136 1137 frontend::IncludeDirGroup Group = 1138 IsIndexHeaderMap ? frontend::IndexHeaderMap : frontend::Angled; 1139 1140 Opts.AddPath(A->getValue(), Group, 1141 /*IsFramework=*/A->getOption().matches(OPT_F), true); 1142 IsIndexHeaderMap = false; 1143 } 1144 1145 // Add -iprefix/-iwithprefix/-iwithprefixbefore options. 1146 StringRef Prefix = ""; // FIXME: This isn't the correct default prefix. 1147 for (const Arg *A : 1148 Args.filtered(OPT_iprefix, OPT_iwithprefix, OPT_iwithprefixbefore)) { 1149 if (A->getOption().matches(OPT_iprefix)) 1150 Prefix = A->getValue(); 1151 else if (A->getOption().matches(OPT_iwithprefix)) 1152 Opts.AddPath(Prefix.str() + A->getValue(), frontend::After, false, true); 1153 else 1154 Opts.AddPath(Prefix.str() + A->getValue(), frontend::Angled, false, true); 1155 } 1156 1157 for (const Arg *A : Args.filtered(OPT_idirafter)) 1158 Opts.AddPath(A->getValue(), frontend::After, false, true); 1159 for (const Arg *A : Args.filtered(OPT_iquote)) 1160 Opts.AddPath(A->getValue(), frontend::Quoted, false, true); 1161 for (const Arg *A : Args.filtered(OPT_isystem, OPT_iwithsysroot)) 1162 Opts.AddPath(A->getValue(), frontend::System, false, 1163 !A->getOption().matches(OPT_iwithsysroot)); 1164 for (const Arg *A : Args.filtered(OPT_iframework)) 1165 Opts.AddPath(A->getValue(), frontend::System, true, true); 1166 1167 // Add the paths for the various language specific isystem flags. 1168 for (const Arg *A : Args.filtered(OPT_c_isystem)) 1169 Opts.AddPath(A->getValue(), frontend::CSystem, false, true); 1170 for (const Arg *A : Args.filtered(OPT_cxx_isystem)) 1171 Opts.AddPath(A->getValue(), frontend::CXXSystem, false, true); 1172 for (const Arg *A : Args.filtered(OPT_objc_isystem)) 1173 Opts.AddPath(A->getValue(), frontend::ObjCSystem, false,true); 1174 for (const Arg *A : Args.filtered(OPT_objcxx_isystem)) 1175 Opts.AddPath(A->getValue(), frontend::ObjCXXSystem, false, true); 1176 1177 // Add the internal paths from a driver that detects standard include paths. 1178 for (const Arg *A : 1179 Args.filtered(OPT_internal_isystem, OPT_internal_externc_isystem)) { 1180 frontend::IncludeDirGroup Group = frontend::System; 1181 if (A->getOption().matches(OPT_internal_externc_isystem)) 1182 Group = frontend::ExternCSystem; 1183 Opts.AddPath(A->getValue(), Group, false, true); 1184 } 1185 1186 // Add the path prefixes which are implicitly treated as being system headers. 1187 for (const Arg *A : 1188 Args.filtered(OPT_system_header_prefix, OPT_no_system_header_prefix)) 1189 Opts.AddSystemHeaderPrefix( 1190 A->getValue(), A->getOption().matches(OPT_system_header_prefix)); 1191 1192 for (const Arg *A : Args.filtered(OPT_ivfsoverlay)) 1193 Opts.AddVFSOverlayFile(A->getValue()); 1194 } 1195 1196 void CompilerInvocation::setLangDefaults(LangOptions &Opts, InputKind IK, 1197 LangStandard::Kind LangStd) { 1198 // Set some properties which depend solely on the input kind; it would be nice 1199 // to move these to the language standard, and have the driver resolve the 1200 // input kind + language standard. 1201 if (IK == IK_Asm) { 1202 Opts.AsmPreprocessor = 1; 1203 } else if (IK == IK_ObjC || 1204 IK == IK_ObjCXX || 1205 IK == IK_PreprocessedObjC || 1206 IK == IK_PreprocessedObjCXX) { 1207 Opts.ObjC1 = Opts.ObjC2 = 1; 1208 } 1209 1210 if (LangStd == LangStandard::lang_unspecified) { 1211 // Based on the base language, pick one. 1212 switch (IK) { 1213 case IK_None: 1214 case IK_AST: 1215 case IK_LLVM_IR: 1216 llvm_unreachable("Invalid input kind!"); 1217 case IK_OpenCL: 1218 LangStd = LangStandard::lang_opencl; 1219 break; 1220 case IK_CUDA: 1221 case IK_PreprocessedCuda: 1222 LangStd = LangStandard::lang_cuda; 1223 break; 1224 case IK_Asm: 1225 case IK_C: 1226 case IK_PreprocessedC: 1227 case IK_ObjC: 1228 case IK_PreprocessedObjC: 1229 LangStd = LangStandard::lang_gnu11; 1230 break; 1231 case IK_CXX: 1232 case IK_PreprocessedCXX: 1233 case IK_ObjCXX: 1234 case IK_PreprocessedObjCXX: 1235 LangStd = LangStandard::lang_gnucxx98; 1236 break; 1237 } 1238 } 1239 1240 const LangStandard &Std = LangStandard::getLangStandardForKind(LangStd); 1241 Opts.LineComment = Std.hasLineComments(); 1242 Opts.C99 = Std.isC99(); 1243 Opts.C11 = Std.isC11(); 1244 Opts.CPlusPlus = Std.isCPlusPlus(); 1245 Opts.CPlusPlus11 = Std.isCPlusPlus11(); 1246 Opts.CPlusPlus14 = Std.isCPlusPlus14(); 1247 Opts.CPlusPlus1z = Std.isCPlusPlus1z(); 1248 Opts.Digraphs = Std.hasDigraphs(); 1249 Opts.GNUMode = Std.isGNUMode(); 1250 Opts.GNUInline = Std.isC89(); 1251 Opts.HexFloats = Std.hasHexFloats(); 1252 Opts.ImplicitInt = Std.hasImplicitInt(); 1253 1254 // Set OpenCL Version. 1255 Opts.OpenCL = LangStd == LangStandard::lang_opencl || IK == IK_OpenCL; 1256 if (LangStd == LangStandard::lang_opencl) 1257 Opts.OpenCLVersion = 100; 1258 else if (LangStd == LangStandard::lang_opencl11) 1259 Opts.OpenCLVersion = 110; 1260 else if (LangStd == LangStandard::lang_opencl12) 1261 Opts.OpenCLVersion = 120; 1262 else if (LangStd == LangStandard::lang_opencl20) 1263 Opts.OpenCLVersion = 200; 1264 1265 // OpenCL has some additional defaults. 1266 if (Opts.OpenCL) { 1267 Opts.AltiVec = 0; 1268 Opts.ZVector = 0; 1269 Opts.CXXOperatorNames = 1; 1270 Opts.LaxVectorConversions = 0; 1271 Opts.DefaultFPContract = 1; 1272 Opts.NativeHalfType = 1; 1273 } 1274 1275 Opts.CUDA = IK == IK_CUDA || IK == IK_PreprocessedCuda || 1276 LangStd == LangStandard::lang_cuda; 1277 1278 // OpenCL and C++ both have bool, true, false keywords. 1279 Opts.Bool = Opts.OpenCL || Opts.CPlusPlus; 1280 1281 // OpenCL has half keyword 1282 Opts.Half = Opts.OpenCL; 1283 1284 // C++ has wchar_t keyword. 1285 Opts.WChar = Opts.CPlusPlus; 1286 1287 Opts.GNUKeywords = Opts.GNUMode; 1288 Opts.CXXOperatorNames = Opts.CPlusPlus; 1289 1290 Opts.DollarIdents = !Opts.AsmPreprocessor; 1291 } 1292 1293 /// Attempt to parse a visibility value out of the given argument. 1294 static Visibility parseVisibility(Arg *arg, ArgList &args, 1295 DiagnosticsEngine &diags) { 1296 StringRef value = arg->getValue(); 1297 if (value == "default") { 1298 return DefaultVisibility; 1299 } else if (value == "hidden" || value == "internal") { 1300 return HiddenVisibility; 1301 } else if (value == "protected") { 1302 // FIXME: diagnose if target does not support protected visibility 1303 return ProtectedVisibility; 1304 } 1305 1306 diags.Report(diag::err_drv_invalid_value) 1307 << arg->getAsString(args) << value; 1308 return DefaultVisibility; 1309 } 1310 1311 static void ParseLangArgs(LangOptions &Opts, ArgList &Args, InputKind IK, 1312 DiagnosticsEngine &Diags) { 1313 // FIXME: Cleanup per-file based stuff. 1314 LangStandard::Kind LangStd = LangStandard::lang_unspecified; 1315 if (const Arg *A = Args.getLastArg(OPT_std_EQ)) { 1316 LangStd = llvm::StringSwitch<LangStandard::Kind>(A->getValue()) 1317 #define LANGSTANDARD(id, name, desc, features) \ 1318 .Case(name, LangStandard::lang_##id) 1319 #include "clang/Frontend/LangStandards.def" 1320 .Default(LangStandard::lang_unspecified); 1321 if (LangStd == LangStandard::lang_unspecified) 1322 Diags.Report(diag::err_drv_invalid_value) 1323 << A->getAsString(Args) << A->getValue(); 1324 else { 1325 // Valid standard, check to make sure language and standard are 1326 // compatible. 1327 const LangStandard &Std = LangStandard::getLangStandardForKind(LangStd); 1328 switch (IK) { 1329 case IK_C: 1330 case IK_ObjC: 1331 case IK_PreprocessedC: 1332 case IK_PreprocessedObjC: 1333 if (!(Std.isC89() || Std.isC99())) 1334 Diags.Report(diag::err_drv_argument_not_allowed_with) 1335 << A->getAsString(Args) << "C/ObjC"; 1336 break; 1337 case IK_CXX: 1338 case IK_ObjCXX: 1339 case IK_PreprocessedCXX: 1340 case IK_PreprocessedObjCXX: 1341 if (!Std.isCPlusPlus()) 1342 Diags.Report(diag::err_drv_argument_not_allowed_with) 1343 << A->getAsString(Args) << "C++/ObjC++"; 1344 break; 1345 case IK_OpenCL: 1346 if (!Std.isC99()) 1347 Diags.Report(diag::err_drv_argument_not_allowed_with) 1348 << A->getAsString(Args) << "OpenCL"; 1349 break; 1350 case IK_CUDA: 1351 case IK_PreprocessedCuda: 1352 if (!Std.isCPlusPlus()) 1353 Diags.Report(diag::err_drv_argument_not_allowed_with) 1354 << A->getAsString(Args) << "CUDA"; 1355 break; 1356 default: 1357 break; 1358 } 1359 } 1360 } 1361 1362 // -cl-std only applies for OpenCL language standards. 1363 // Override the -std option in this case. 1364 if (const Arg *A = Args.getLastArg(OPT_cl_std_EQ)) { 1365 LangStandard::Kind OpenCLLangStd 1366 = llvm::StringSwitch<LangStandard::Kind>(A->getValue()) 1367 .Case("CL", LangStandard::lang_opencl) 1368 .Case("CL1.1", LangStandard::lang_opencl11) 1369 .Case("CL1.2", LangStandard::lang_opencl12) 1370 .Case("CL2.0", LangStandard::lang_opencl20) 1371 .Default(LangStandard::lang_unspecified); 1372 1373 if (OpenCLLangStd == LangStandard::lang_unspecified) { 1374 Diags.Report(diag::err_drv_invalid_value) 1375 << A->getAsString(Args) << A->getValue(); 1376 } 1377 else 1378 LangStd = OpenCLLangStd; 1379 } 1380 1381 CompilerInvocation::setLangDefaults(Opts, IK, LangStd); 1382 1383 // We abuse '-f[no-]gnu-keywords' to force overriding all GNU-extension 1384 // keywords. This behavior is provided by GCC's poorly named '-fasm' flag, 1385 // while a subset (the non-C++ GNU keywords) is provided by GCC's 1386 // '-fgnu-keywords'. Clang conflates the two for simplicity under the single 1387 // name, as it doesn't seem a useful distinction. 1388 Opts.GNUKeywords = Args.hasFlag(OPT_fgnu_keywords, OPT_fno_gnu_keywords, 1389 Opts.GNUKeywords); 1390 1391 if (Args.hasArg(OPT_fno_operator_names)) 1392 Opts.CXXOperatorNames = 0; 1393 1394 if (Args.hasArg(OPT_fcuda_is_device)) 1395 Opts.CUDAIsDevice = 1; 1396 1397 if (Args.hasArg(OPT_fcuda_uses_libdevice)) 1398 Opts.CUDAUsesLibDevice = 1; 1399 1400 if (Args.hasArg(OPT_fcuda_allow_host_calls_from_host_device)) 1401 Opts.CUDAAllowHostCallsFromHostDevice = 1; 1402 1403 if (Args.hasArg(OPT_fcuda_disable_target_call_checks)) 1404 Opts.CUDADisableTargetCallChecks = 1; 1405 1406 if (Args.hasArg(OPT_fcuda_target_overloads)) 1407 Opts.CUDATargetOverloads = 1; 1408 1409 if (Opts.ObjC1) { 1410 if (Arg *arg = Args.getLastArg(OPT_fobjc_runtime_EQ)) { 1411 StringRef value = arg->getValue(); 1412 if (Opts.ObjCRuntime.tryParse(value)) 1413 Diags.Report(diag::err_drv_unknown_objc_runtime) << value; 1414 } 1415 1416 if (Args.hasArg(OPT_fobjc_gc_only)) 1417 Opts.setGC(LangOptions::GCOnly); 1418 else if (Args.hasArg(OPT_fobjc_gc)) 1419 Opts.setGC(LangOptions::HybridGC); 1420 else if (Args.hasArg(OPT_fobjc_arc)) { 1421 Opts.ObjCAutoRefCount = 1; 1422 if (!Opts.ObjCRuntime.allowsARC()) 1423 Diags.Report(diag::err_arc_unsupported_on_runtime); 1424 1425 // Only set ObjCARCWeak if ARC is enabled. 1426 if (Args.hasArg(OPT_fobjc_runtime_has_weak)) 1427 Opts.ObjCARCWeak = 1; 1428 else 1429 Opts.ObjCARCWeak = Opts.ObjCRuntime.allowsWeak(); 1430 } 1431 1432 if (Args.hasArg(OPT_fno_objc_infer_related_result_type)) 1433 Opts.ObjCInferRelatedResultType = 0; 1434 1435 if (Args.hasArg(OPT_fobjc_subscripting_legacy_runtime)) 1436 Opts.ObjCSubscriptingLegacyRuntime = 1437 (Opts.ObjCRuntime.getKind() == ObjCRuntime::FragileMacOSX); 1438 } 1439 1440 if (Args.hasArg(OPT_fgnu89_inline)) { 1441 if (Opts.CPlusPlus) 1442 Diags.Report(diag::err_drv_argument_not_allowed_with) << "-fgnu89-inline" 1443 << "C++/ObjC++"; 1444 else 1445 Opts.GNUInline = 1; 1446 } 1447 1448 if (Args.hasArg(OPT_fapple_kext)) { 1449 if (!Opts.CPlusPlus) 1450 Diags.Report(diag::warn_c_kext); 1451 else 1452 Opts.AppleKext = 1; 1453 } 1454 1455 if (Args.hasArg(OPT_print_ivar_layout)) 1456 Opts.ObjCGCBitmapPrint = 1; 1457 if (Args.hasArg(OPT_fno_constant_cfstrings)) 1458 Opts.NoConstantCFStrings = 1; 1459 1460 if (Args.hasArg(OPT_faltivec)) 1461 Opts.AltiVec = 1; 1462 1463 if (Args.hasArg(OPT_fzvector)) 1464 Opts.ZVector = 1; 1465 1466 if (Args.hasArg(OPT_pthread)) 1467 Opts.POSIXThreads = 1; 1468 1469 // The value-visibility mode defaults to "default". 1470 if (Arg *visOpt = Args.getLastArg(OPT_fvisibility)) { 1471 Opts.setValueVisibilityMode(parseVisibility(visOpt, Args, Diags)); 1472 } else { 1473 Opts.setValueVisibilityMode(DefaultVisibility); 1474 } 1475 1476 // The type-visibility mode defaults to the value-visibility mode. 1477 if (Arg *typeVisOpt = Args.getLastArg(OPT_ftype_visibility)) { 1478 Opts.setTypeVisibilityMode(parseVisibility(typeVisOpt, Args, Diags)); 1479 } else { 1480 Opts.setTypeVisibilityMode(Opts.getValueVisibilityMode()); 1481 } 1482 1483 if (Args.hasArg(OPT_fvisibility_inlines_hidden)) 1484 Opts.InlineVisibilityHidden = 1; 1485 1486 if (Args.hasArg(OPT_ftrapv)) { 1487 Opts.setSignedOverflowBehavior(LangOptions::SOB_Trapping); 1488 // Set the handler, if one is specified. 1489 Opts.OverflowHandler = 1490 Args.getLastArgValue(OPT_ftrapv_handler); 1491 } 1492 else if (Args.hasArg(OPT_fwrapv)) 1493 Opts.setSignedOverflowBehavior(LangOptions::SOB_Defined); 1494 1495 Opts.MSVCCompat = Args.hasArg(OPT_fms_compatibility); 1496 Opts.MicrosoftExt = Opts.MSVCCompat || Args.hasArg(OPT_fms_extensions); 1497 Opts.AsmBlocks = Args.hasArg(OPT_fasm_blocks) || Opts.MicrosoftExt; 1498 Opts.MSCompatibilityVersion = 0; 1499 if (const Arg *A = Args.getLastArg(OPT_fms_compatibility_version)) { 1500 VersionTuple VT; 1501 if (VT.tryParse(A->getValue())) 1502 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) 1503 << A->getValue(); 1504 Opts.MSCompatibilityVersion = VT.getMajor() * 10000000 + 1505 VT.getMinor().getValueOr(0) * 100000 + 1506 VT.getSubminor().getValueOr(0); 1507 } 1508 1509 // Mimicing gcc's behavior, trigraphs are only enabled if -trigraphs 1510 // is specified, or -std is set to a conforming mode. 1511 // Trigraphs are disabled by default in c++1z onwards. 1512 Opts.Trigraphs = !Opts.GNUMode && !Opts.MSVCCompat && !Opts.CPlusPlus1z; 1513 Opts.Trigraphs = 1514 Args.hasFlag(OPT_ftrigraphs, OPT_fno_trigraphs, Opts.Trigraphs); 1515 1516 Opts.DollarIdents = Args.hasFlag(OPT_fdollars_in_identifiers, 1517 OPT_fno_dollars_in_identifiers, 1518 Opts.DollarIdents); 1519 Opts.PascalStrings = Args.hasArg(OPT_fpascal_strings); 1520 Opts.VtorDispMode = getLastArgIntValue(Args, OPT_vtordisp_mode_EQ, 1, Diags); 1521 Opts.Borland = Args.hasArg(OPT_fborland_extensions); 1522 Opts.WritableStrings = Args.hasArg(OPT_fwritable_strings); 1523 Opts.ConstStrings = Args.hasFlag(OPT_fconst_strings, OPT_fno_const_strings, 1524 Opts.ConstStrings); 1525 if (Args.hasArg(OPT_fno_lax_vector_conversions)) 1526 Opts.LaxVectorConversions = 0; 1527 if (Args.hasArg(OPT_fno_threadsafe_statics)) 1528 Opts.ThreadsafeStatics = 0; 1529 Opts.Exceptions = Args.hasArg(OPT_fexceptions); 1530 Opts.ObjCExceptions = Args.hasArg(OPT_fobjc_exceptions); 1531 Opts.CXXExceptions = Args.hasArg(OPT_fcxx_exceptions); 1532 Opts.SjLjExceptions = Args.hasArg(OPT_fsjlj_exceptions); 1533 Opts.TraditionalCPP = Args.hasArg(OPT_traditional_cpp); 1534 1535 Opts.RTTI = !Args.hasArg(OPT_fno_rtti); 1536 Opts.RTTIData = Opts.RTTI && !Args.hasArg(OPT_fno_rtti_data); 1537 Opts.Blocks = Args.hasArg(OPT_fblocks); 1538 Opts.BlocksRuntimeOptional = Args.hasArg(OPT_fblocks_runtime_optional); 1539 Opts.Modules = Args.hasArg(OPT_fmodules); 1540 Opts.ModulesStrictDeclUse = Args.hasArg(OPT_fmodules_strict_decluse); 1541 Opts.ModulesDeclUse = 1542 Args.hasArg(OPT_fmodules_decluse) || Opts.ModulesStrictDeclUse; 1543 Opts.ModulesLocalVisibility = 1544 Args.hasArg(OPT_fmodules_local_submodule_visibility); 1545 Opts.ModulesHideInternalLinkage = 1546 !Args.hasArg(OPT_fno_modules_hide_internal_linkage); 1547 Opts.ModulesSearchAll = Opts.Modules && 1548 !Args.hasArg(OPT_fno_modules_search_all) && 1549 Args.hasArg(OPT_fmodules_search_all); 1550 Opts.ModulesErrorRecovery = !Args.hasArg(OPT_fno_modules_error_recovery); 1551 Opts.ImplicitModules = !Args.hasArg(OPT_fno_implicit_modules); 1552 Opts.CharIsSigned = Opts.OpenCL || !Args.hasArg(OPT_fno_signed_char); 1553 Opts.WChar = Opts.CPlusPlus && !Args.hasArg(OPT_fno_wchar); 1554 Opts.ShortWChar = Args.hasFlag(OPT_fshort_wchar, OPT_fno_short_wchar, false); 1555 Opts.ShortEnums = Args.hasArg(OPT_fshort_enums); 1556 Opts.Freestanding = Args.hasArg(OPT_ffreestanding); 1557 Opts.NoBuiltin = Args.hasArg(OPT_fno_builtin) || Opts.Freestanding; 1558 Opts.NoMathBuiltin = Args.hasArg(OPT_fno_math_builtin); 1559 Opts.AssumeSaneOperatorNew = !Args.hasArg(OPT_fno_assume_sane_operator_new); 1560 Opts.SizedDeallocation = Args.hasArg(OPT_fsized_deallocation); 1561 Opts.ConceptsTS = Args.hasArg(OPT_fconcepts_ts); 1562 Opts.HeinousExtensions = Args.hasArg(OPT_fheinous_gnu_extensions); 1563 Opts.AccessControl = !Args.hasArg(OPT_fno_access_control); 1564 Opts.ElideConstructors = !Args.hasArg(OPT_fno_elide_constructors); 1565 Opts.MathErrno = !Opts.OpenCL && Args.hasArg(OPT_fmath_errno); 1566 Opts.InstantiationDepth = 1567 getLastArgIntValue(Args, OPT_ftemplate_depth, 256, Diags); 1568 Opts.ArrowDepth = 1569 getLastArgIntValue(Args, OPT_foperator_arrow_depth, 256, Diags); 1570 Opts.ConstexprCallDepth = 1571 getLastArgIntValue(Args, OPT_fconstexpr_depth, 512, Diags); 1572 Opts.ConstexprStepLimit = 1573 getLastArgIntValue(Args, OPT_fconstexpr_steps, 1048576, Diags); 1574 Opts.BracketDepth = getLastArgIntValue(Args, OPT_fbracket_depth, 256, Diags); 1575 Opts.DelayedTemplateParsing = Args.hasArg(OPT_fdelayed_template_parsing); 1576 Opts.NumLargeByValueCopy = 1577 getLastArgIntValue(Args, OPT_Wlarge_by_value_copy_EQ, 0, Diags); 1578 Opts.MSBitfields = Args.hasArg(OPT_mms_bitfields); 1579 Opts.ObjCConstantStringClass = 1580 Args.getLastArgValue(OPT_fconstant_string_class); 1581 Opts.ObjCDefaultSynthProperties = 1582 !Args.hasArg(OPT_disable_objc_default_synthesize_properties); 1583 Opts.EncodeExtendedBlockSig = 1584 Args.hasArg(OPT_fencode_extended_block_signature); 1585 Opts.EmitAllDecls = Args.hasArg(OPT_femit_all_decls); 1586 Opts.PackStruct = getLastArgIntValue(Args, OPT_fpack_struct_EQ, 0, Diags); 1587 Opts.MaxTypeAlign = getLastArgIntValue(Args, OPT_fmax_type_align_EQ, 0, Diags); 1588 Opts.PICLevel = getLastArgIntValue(Args, OPT_pic_level, 0, Diags); 1589 Opts.PIELevel = getLastArgIntValue(Args, OPT_pie_level, 0, Diags); 1590 Opts.Static = Args.hasArg(OPT_static_define); 1591 Opts.DumpRecordLayoutsSimple = Args.hasArg(OPT_fdump_record_layouts_simple); 1592 Opts.DumpRecordLayouts = Opts.DumpRecordLayoutsSimple 1593 || Args.hasArg(OPT_fdump_record_layouts); 1594 Opts.DumpVTableLayouts = Args.hasArg(OPT_fdump_vtable_layouts); 1595 Opts.SpellChecking = !Args.hasArg(OPT_fno_spell_checking); 1596 Opts.NoBitFieldTypeAlign = Args.hasArg(OPT_fno_bitfield_type_align); 1597 Opts.SinglePrecisionConstants = Args.hasArg(OPT_cl_single_precision_constant); 1598 Opts.FastRelaxedMath = Args.hasArg(OPT_cl_fast_relaxed_math); 1599 Opts.MRTD = Args.hasArg(OPT_mrtd); 1600 Opts.HexagonQdsp6Compat = Args.hasArg(OPT_mqdsp6_compat); 1601 Opts.FakeAddressSpaceMap = Args.hasArg(OPT_ffake_address_space_map); 1602 Opts.ParseUnknownAnytype = Args.hasArg(OPT_funknown_anytype); 1603 Opts.DebuggerSupport = Args.hasArg(OPT_fdebugger_support); 1604 Opts.DebuggerCastResultToId = Args.hasArg(OPT_fdebugger_cast_result_to_id); 1605 Opts.DebuggerObjCLiteral = Args.hasArg(OPT_fdebugger_objc_literal); 1606 Opts.ApplePragmaPack = Args.hasArg(OPT_fapple_pragma_pack); 1607 Opts.CurrentModule = Args.getLastArgValue(OPT_fmodule_name); 1608 Opts.AppExt = Args.hasArg(OPT_fapplication_extension); 1609 Opts.ImplementationOfModule = 1610 Args.getLastArgValue(OPT_fmodule_implementation_of); 1611 Opts.ModuleFeatures = Args.getAllArgValues(OPT_fmodule_feature); 1612 std::sort(Opts.ModuleFeatures.begin(), Opts.ModuleFeatures.end()); 1613 Opts.NativeHalfType |= Args.hasArg(OPT_fnative_half_type); 1614 Opts.HalfArgsAndReturns = Args.hasArg(OPT_fallow_half_arguments_and_returns); 1615 Opts.GNUAsm = !Args.hasArg(OPT_fno_gnu_inline_asm); 1616 1617 // __declspec is enabled by default for the PS4 by the driver, and also 1618 // enabled for Microsoft Extensions or Borland Extensions, here. 1619 // 1620 // FIXME: __declspec is also currently enabled for CUDA, but isn't really a 1621 // CUDA extension, however it is required for supporting cuda_builtin_vars.h, 1622 // which uses __declspec(property). Once that has been rewritten in terms of 1623 // something more generic, remove the Opts.CUDA term here. 1624 Opts.DeclSpecKeyword = 1625 Args.hasFlag(OPT_fdeclspec, OPT_fno_declspec, 1626 (Opts.MicrosoftExt || Opts.Borland || Opts.CUDA)); 1627 1628 if (!Opts.CurrentModule.empty() && !Opts.ImplementationOfModule.empty() && 1629 Opts.CurrentModule != Opts.ImplementationOfModule) { 1630 Diags.Report(diag::err_conflicting_module_names) 1631 << Opts.CurrentModule << Opts.ImplementationOfModule; 1632 } 1633 1634 // For now, we only support local submodule visibility in C++ (because we 1635 // heavily depend on the ODR for merging redefinitions). 1636 if (Opts.ModulesLocalVisibility && !Opts.CPlusPlus) 1637 Diags.Report(diag::err_drv_argument_not_allowed_with) 1638 << "-fmodules-local-submodule-visibility" << "C"; 1639 1640 if (Arg *A = Args.getLastArg(OPT_faddress_space_map_mangling_EQ)) { 1641 switch (llvm::StringSwitch<unsigned>(A->getValue()) 1642 .Case("target", LangOptions::ASMM_Target) 1643 .Case("no", LangOptions::ASMM_Off) 1644 .Case("yes", LangOptions::ASMM_On) 1645 .Default(255)) { 1646 default: 1647 Diags.Report(diag::err_drv_invalid_value) 1648 << "-faddress-space-map-mangling=" << A->getValue(); 1649 break; 1650 case LangOptions::ASMM_Target: 1651 Opts.setAddressSpaceMapMangling(LangOptions::ASMM_Target); 1652 break; 1653 case LangOptions::ASMM_On: 1654 Opts.setAddressSpaceMapMangling(LangOptions::ASMM_On); 1655 break; 1656 case LangOptions::ASMM_Off: 1657 Opts.setAddressSpaceMapMangling(LangOptions::ASMM_Off); 1658 break; 1659 } 1660 } 1661 1662 if (Arg *A = Args.getLastArg(OPT_fms_memptr_rep_EQ)) { 1663 LangOptions::PragmaMSPointersToMembersKind InheritanceModel = 1664 llvm::StringSwitch<LangOptions::PragmaMSPointersToMembersKind>( 1665 A->getValue()) 1666 .Case("single", 1667 LangOptions::PPTMK_FullGeneralitySingleInheritance) 1668 .Case("multiple", 1669 LangOptions::PPTMK_FullGeneralityMultipleInheritance) 1670 .Case("virtual", 1671 LangOptions::PPTMK_FullGeneralityVirtualInheritance) 1672 .Default(LangOptions::PPTMK_BestCase); 1673 if (InheritanceModel == LangOptions::PPTMK_BestCase) 1674 Diags.Report(diag::err_drv_invalid_value) 1675 << "-fms-memptr-rep=" << A->getValue(); 1676 1677 Opts.setMSPointerToMemberRepresentationMethod(InheritanceModel); 1678 } 1679 1680 // Check if -fopenmp is specified. 1681 Opts.OpenMP = Args.hasArg(options::OPT_fopenmp); 1682 Opts.OpenMPUseTLS = 1683 Opts.OpenMP && !Args.hasArg(options::OPT_fnoopenmp_use_tls); 1684 1685 // Record whether the __DEPRECATED define was requested. 1686 Opts.Deprecated = Args.hasFlag(OPT_fdeprecated_macro, 1687 OPT_fno_deprecated_macro, 1688 Opts.Deprecated); 1689 1690 // FIXME: Eliminate this dependency. 1691 unsigned Opt = getOptimizationLevel(Args, IK, Diags), 1692 OptSize = getOptimizationLevelSize(Args); 1693 Opts.Optimize = Opt != 0; 1694 Opts.OptimizeSize = OptSize != 0; 1695 1696 // This is the __NO_INLINE__ define, which just depends on things like the 1697 // optimization level and -fno-inline, not actually whether the backend has 1698 // inlining enabled. 1699 Opts.NoInlineDefine = !Opt || Args.hasArg(OPT_fno_inline); 1700 1701 Opts.FastMath = Args.hasArg(OPT_ffast_math) || 1702 Args.hasArg(OPT_cl_fast_relaxed_math); 1703 Opts.FiniteMathOnly = Args.hasArg(OPT_ffinite_math_only) || 1704 Args.hasArg(OPT_cl_finite_math_only) || 1705 Args.hasArg(OPT_cl_fast_relaxed_math); 1706 Opts.UnsafeFPMath = Args.hasArg(OPT_menable_unsafe_fp_math) || 1707 Args.hasArg(OPT_cl_unsafe_math_optimizations) || 1708 Args.hasArg(OPT_cl_fast_relaxed_math); 1709 1710 Opts.RetainCommentsFromSystemHeaders = 1711 Args.hasArg(OPT_fretain_comments_from_system_headers); 1712 1713 unsigned SSP = getLastArgIntValue(Args, OPT_stack_protector, 0, Diags); 1714 switch (SSP) { 1715 default: 1716 Diags.Report(diag::err_drv_invalid_value) 1717 << Args.getLastArg(OPT_stack_protector)->getAsString(Args) << SSP; 1718 break; 1719 case 0: Opts.setStackProtector(LangOptions::SSPOff); break; 1720 case 1: Opts.setStackProtector(LangOptions::SSPOn); break; 1721 case 2: Opts.setStackProtector(LangOptions::SSPStrong); break; 1722 case 3: Opts.setStackProtector(LangOptions::SSPReq); break; 1723 } 1724 1725 // Parse -fsanitize= arguments. 1726 parseSanitizerKinds("-fsanitize=", Args.getAllArgValues(OPT_fsanitize_EQ), 1727 Diags, Opts.Sanitize); 1728 // -fsanitize-address-field-padding=N has to be a LangOpt, parse it here. 1729 Opts.SanitizeAddressFieldPadding = 1730 getLastArgIntValue(Args, OPT_fsanitize_address_field_padding, 0, Diags); 1731 Opts.SanitizerBlacklistFiles = Args.getAllArgValues(OPT_fsanitize_blacklist); 1732 } 1733 1734 static void ParsePreprocessorArgs(PreprocessorOptions &Opts, ArgList &Args, 1735 FileManager &FileMgr, 1736 DiagnosticsEngine &Diags) { 1737 using namespace options; 1738 Opts.ImplicitPCHInclude = Args.getLastArgValue(OPT_include_pch); 1739 Opts.ImplicitPTHInclude = Args.getLastArgValue(OPT_include_pth); 1740 if (const Arg *A = Args.getLastArg(OPT_token_cache)) 1741 Opts.TokenCache = A->getValue(); 1742 else 1743 Opts.TokenCache = Opts.ImplicitPTHInclude; 1744 Opts.UsePredefines = !Args.hasArg(OPT_undef); 1745 Opts.DetailedRecord = Args.hasArg(OPT_detailed_preprocessing_record); 1746 Opts.DisablePCHValidation = Args.hasArg(OPT_fno_validate_pch); 1747 1748 Opts.DumpDeserializedPCHDecls = Args.hasArg(OPT_dump_deserialized_pch_decls); 1749 for (const Arg *A : Args.filtered(OPT_error_on_deserialized_pch_decl)) 1750 Opts.DeserializedPCHDeclsToErrorOn.insert(A->getValue()); 1751 1752 if (const Arg *A = Args.getLastArg(OPT_preamble_bytes_EQ)) { 1753 StringRef Value(A->getValue()); 1754 size_t Comma = Value.find(','); 1755 unsigned Bytes = 0; 1756 unsigned EndOfLine = 0; 1757 1758 if (Comma == StringRef::npos || 1759 Value.substr(0, Comma).getAsInteger(10, Bytes) || 1760 Value.substr(Comma + 1).getAsInteger(10, EndOfLine)) 1761 Diags.Report(diag::err_drv_preamble_format); 1762 else { 1763 Opts.PrecompiledPreambleBytes.first = Bytes; 1764 Opts.PrecompiledPreambleBytes.second = (EndOfLine != 0); 1765 } 1766 } 1767 1768 // Add macros from the command line. 1769 for (const Arg *A : Args.filtered(OPT_D, OPT_U)) { 1770 if (A->getOption().matches(OPT_D)) 1771 Opts.addMacroDef(A->getValue()); 1772 else 1773 Opts.addMacroUndef(A->getValue()); 1774 } 1775 1776 Opts.MacroIncludes = Args.getAllArgValues(OPT_imacros); 1777 1778 // Add the ordered list of -includes. 1779 for (const Arg *A : Args.filtered(OPT_include)) 1780 Opts.Includes.emplace_back(A->getValue()); 1781 1782 for (const Arg *A : Args.filtered(OPT_chain_include)) 1783 Opts.ChainedIncludes.emplace_back(A->getValue()); 1784 1785 // Include 'altivec.h' if -faltivec option present 1786 if (Args.hasArg(OPT_faltivec)) 1787 Opts.Includes.emplace_back("altivec.h"); 1788 1789 for (const Arg *A : Args.filtered(OPT_remap_file)) { 1790 std::pair<StringRef, StringRef> Split = StringRef(A->getValue()).split(';'); 1791 1792 if (Split.second.empty()) { 1793 Diags.Report(diag::err_drv_invalid_remap_file) << A->getAsString(Args); 1794 continue; 1795 } 1796 1797 Opts.addRemappedFile(Split.first, Split.second); 1798 } 1799 1800 if (Arg *A = Args.getLastArg(OPT_fobjc_arc_cxxlib_EQ)) { 1801 StringRef Name = A->getValue(); 1802 unsigned Library = llvm::StringSwitch<unsigned>(Name) 1803 .Case("libc++", ARCXX_libcxx) 1804 .Case("libstdc++", ARCXX_libstdcxx) 1805 .Case("none", ARCXX_nolib) 1806 .Default(~0U); 1807 if (Library == ~0U) 1808 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Name; 1809 else 1810 Opts.ObjCXXARCStandardLibrary = (ObjCXXARCStandardLibraryKind)Library; 1811 } 1812 } 1813 1814 static void ParsePreprocessorOutputArgs(PreprocessorOutputOptions &Opts, 1815 ArgList &Args, 1816 frontend::ActionKind Action) { 1817 using namespace options; 1818 1819 switch (Action) { 1820 case frontend::ASTDeclList: 1821 case frontend::ASTDump: 1822 case frontend::ASTPrint: 1823 case frontend::ASTView: 1824 case frontend::EmitAssembly: 1825 case frontend::EmitBC: 1826 case frontend::EmitHTML: 1827 case frontend::EmitLLVM: 1828 case frontend::EmitLLVMOnly: 1829 case frontend::EmitCodeGenOnly: 1830 case frontend::EmitObj: 1831 case frontend::FixIt: 1832 case frontend::GenerateModule: 1833 case frontend::GeneratePCH: 1834 case frontend::GeneratePTH: 1835 case frontend::ParseSyntaxOnly: 1836 case frontend::ModuleFileInfo: 1837 case frontend::VerifyPCH: 1838 case frontend::PluginAction: 1839 case frontend::PrintDeclContext: 1840 case frontend::RewriteObjC: 1841 case frontend::RewriteTest: 1842 case frontend::RunAnalysis: 1843 case frontend::MigrateSource: 1844 Opts.ShowCPP = 0; 1845 break; 1846 1847 case frontend::DumpRawTokens: 1848 case frontend::DumpTokens: 1849 case frontend::InitOnly: 1850 case frontend::PrintPreamble: 1851 case frontend::PrintPreprocessedInput: 1852 case frontend::RewriteMacros: 1853 case frontend::RunPreprocessorOnly: 1854 Opts.ShowCPP = !Args.hasArg(OPT_dM); 1855 break; 1856 } 1857 1858 Opts.ShowComments = Args.hasArg(OPT_C); 1859 Opts.ShowLineMarkers = !Args.hasArg(OPT_P); 1860 Opts.ShowMacroComments = Args.hasArg(OPT_CC); 1861 Opts.ShowMacros = Args.hasArg(OPT_dM) || Args.hasArg(OPT_dD); 1862 Opts.RewriteIncludes = Args.hasArg(OPT_frewrite_includes); 1863 Opts.UseLineDirectives = Args.hasArg(OPT_fuse_line_directives); 1864 } 1865 1866 static void ParseTargetArgs(TargetOptions &Opts, ArgList &Args) { 1867 using namespace options; 1868 Opts.ABI = Args.getLastArgValue(OPT_target_abi); 1869 Opts.CPU = Args.getLastArgValue(OPT_target_cpu); 1870 Opts.FPMath = Args.getLastArgValue(OPT_mfpmath); 1871 Opts.FeaturesAsWritten = Args.getAllArgValues(OPT_target_feature); 1872 Opts.LinkerVersion = Args.getLastArgValue(OPT_target_linker_version); 1873 Opts.Triple = llvm::Triple::normalize(Args.getLastArgValue(OPT_triple)); 1874 Opts.Reciprocals = Args.getAllArgValues(OPT_mrecip_EQ); 1875 // Use the default target triple if unspecified. 1876 if (Opts.Triple.empty()) 1877 Opts.Triple = llvm::sys::getDefaultTargetTriple(); 1878 } 1879 1880 bool CompilerInvocation::CreateFromArgs(CompilerInvocation &Res, 1881 const char *const *ArgBegin, 1882 const char *const *ArgEnd, 1883 DiagnosticsEngine &Diags) { 1884 bool Success = true; 1885 1886 // Parse the arguments. 1887 std::unique_ptr<OptTable> Opts(createDriverOptTable()); 1888 const unsigned IncludedFlagsBitmask = options::CC1Option; 1889 unsigned MissingArgIndex, MissingArgCount; 1890 InputArgList Args = 1891 Opts->ParseArgs(llvm::makeArrayRef(ArgBegin, ArgEnd), MissingArgIndex, 1892 MissingArgCount, IncludedFlagsBitmask); 1893 1894 // Check for missing argument error. 1895 if (MissingArgCount) { 1896 Diags.Report(diag::err_drv_missing_argument) 1897 << Args.getArgString(MissingArgIndex) << MissingArgCount; 1898 Success = false; 1899 } 1900 1901 // Issue errors on unknown arguments. 1902 for (const Arg *A : Args.filtered(OPT_UNKNOWN)) { 1903 Diags.Report(diag::err_drv_unknown_argument) << A->getAsString(Args); 1904 Success = false; 1905 } 1906 1907 Success &= ParseAnalyzerArgs(*Res.getAnalyzerOpts(), Args, Diags); 1908 Success &= ParseMigratorArgs(Res.getMigratorOpts(), Args); 1909 ParseDependencyOutputArgs(Res.getDependencyOutputOpts(), Args); 1910 Success &= ParseDiagnosticArgs(Res.getDiagnosticOpts(), Args, &Diags); 1911 ParseCommentArgs(Res.getLangOpts()->CommentOpts, Args); 1912 ParseFileSystemArgs(Res.getFileSystemOpts(), Args); 1913 // FIXME: We shouldn't have to pass the DashX option around here 1914 InputKind DashX = ParseFrontendArgs(Res.getFrontendOpts(), Args, Diags); 1915 ParseTargetArgs(Res.getTargetOpts(), Args); 1916 Success &= ParseCodeGenArgs(Res.getCodeGenOpts(), Args, DashX, Diags, 1917 Res.getTargetOpts()); 1918 ParseHeaderSearchArgs(Res.getHeaderSearchOpts(), Args); 1919 if (DashX == IK_AST || DashX == IK_LLVM_IR) { 1920 // ObjCAAutoRefCount and Sanitize LangOpts are used to setup the 1921 // PassManager in BackendUtil.cpp. They need to be initializd no matter 1922 // what the input type is. 1923 if (Args.hasArg(OPT_fobjc_arc)) 1924 Res.getLangOpts()->ObjCAutoRefCount = 1; 1925 parseSanitizerKinds("-fsanitize=", Args.getAllArgValues(OPT_fsanitize_EQ), 1926 Diags, Res.getLangOpts()->Sanitize); 1927 } else { 1928 // Other LangOpts are only initialzed when the input is not AST or LLVM IR. 1929 ParseLangArgs(*Res.getLangOpts(), Args, DashX, Diags); 1930 if (Res.getFrontendOpts().ProgramAction == frontend::RewriteObjC) 1931 Res.getLangOpts()->ObjCExceptions = 1; 1932 } 1933 // FIXME: ParsePreprocessorArgs uses the FileManager to read the contents of 1934 // PCH file and find the original header name. Remove the need to do that in 1935 // ParsePreprocessorArgs and remove the FileManager 1936 // parameters from the function and the "FileManager.h" #include. 1937 FileManager FileMgr(Res.getFileSystemOpts()); 1938 ParsePreprocessorArgs(Res.getPreprocessorOpts(), Args, FileMgr, Diags); 1939 ParsePreprocessorOutputArgs(Res.getPreprocessorOutputOpts(), Args, 1940 Res.getFrontendOpts().ProgramAction); 1941 return Success; 1942 } 1943 1944 namespace { 1945 1946 class ModuleSignature { 1947 SmallVector<uint64_t, 16> Data; 1948 unsigned CurBit; 1949 uint64_t CurValue; 1950 1951 public: 1952 ModuleSignature() : CurBit(0), CurValue(0) { } 1953 1954 void add(uint64_t Value, unsigned Bits); 1955 void add(StringRef Value); 1956 void flush(); 1957 1958 llvm::APInt getAsInteger() const; 1959 }; 1960 } 1961 1962 void ModuleSignature::add(uint64_t Value, unsigned int NumBits) { 1963 CurValue |= Value << CurBit; 1964 if (CurBit + NumBits < 64) { 1965 CurBit += NumBits; 1966 return; 1967 } 1968 1969 // Add the current word. 1970 Data.push_back(CurValue); 1971 1972 if (CurBit) 1973 CurValue = Value >> (64-CurBit); 1974 else 1975 CurValue = 0; 1976 CurBit = (CurBit+NumBits) & 63; 1977 } 1978 1979 void ModuleSignature::flush() { 1980 if (CurBit == 0) 1981 return; 1982 1983 Data.push_back(CurValue); 1984 CurBit = 0; 1985 CurValue = 0; 1986 } 1987 1988 void ModuleSignature::add(StringRef Value) { 1989 for (auto &c : Value) 1990 add(c, 8); 1991 } 1992 1993 llvm::APInt ModuleSignature::getAsInteger() const { 1994 return llvm::APInt(Data.size() * 64, Data); 1995 } 1996 1997 std::string CompilerInvocation::getModuleHash() const { 1998 // Note: For QoI reasons, the things we use as a hash here should all be 1999 // dumped via the -module-info flag. 2000 using llvm::hash_code; 2001 using llvm::hash_value; 2002 using llvm::hash_combine; 2003 2004 // Start the signature with the compiler version. 2005 // FIXME: We'd rather use something more cryptographically sound than 2006 // CityHash, but this will do for now. 2007 hash_code code = hash_value(getClangFullRepositoryVersion()); 2008 2009 // Extend the signature with the language options 2010 #define LANGOPT(Name, Bits, Default, Description) \ 2011 code = hash_combine(code, LangOpts->Name); 2012 #define ENUM_LANGOPT(Name, Type, Bits, Default, Description) \ 2013 code = hash_combine(code, static_cast<unsigned>(LangOpts->get##Name())); 2014 #define BENIGN_LANGOPT(Name, Bits, Default, Description) 2015 #define BENIGN_ENUM_LANGOPT(Name, Type, Bits, Default, Description) 2016 #include "clang/Basic/LangOptions.def" 2017 2018 for (StringRef Feature : LangOpts->ModuleFeatures) 2019 code = hash_combine(code, Feature); 2020 2021 // Extend the signature with the target options. 2022 code = hash_combine(code, TargetOpts->Triple, TargetOpts->CPU, 2023 TargetOpts->ABI); 2024 for (unsigned i = 0, n = TargetOpts->FeaturesAsWritten.size(); i != n; ++i) 2025 code = hash_combine(code, TargetOpts->FeaturesAsWritten[i]); 2026 2027 // Extend the signature with preprocessor options. 2028 const PreprocessorOptions &ppOpts = getPreprocessorOpts(); 2029 const HeaderSearchOptions &hsOpts = getHeaderSearchOpts(); 2030 code = hash_combine(code, ppOpts.UsePredefines, ppOpts.DetailedRecord); 2031 2032 for (std::vector<std::pair<std::string, bool/*isUndef*/>>::const_iterator 2033 I = getPreprocessorOpts().Macros.begin(), 2034 IEnd = getPreprocessorOpts().Macros.end(); 2035 I != IEnd; ++I) { 2036 // If we're supposed to ignore this macro for the purposes of modules, 2037 // don't put it into the hash. 2038 if (!hsOpts.ModulesIgnoreMacros.empty()) { 2039 // Check whether we're ignoring this macro. 2040 StringRef MacroDef = I->first; 2041 if (hsOpts.ModulesIgnoreMacros.count(MacroDef.split('=').first)) 2042 continue; 2043 } 2044 2045 code = hash_combine(code, I->first, I->second); 2046 } 2047 2048 // Extend the signature with the sysroot. 2049 code = hash_combine(code, hsOpts.Sysroot, hsOpts.UseBuiltinIncludes, 2050 hsOpts.UseStandardSystemIncludes, 2051 hsOpts.UseStandardCXXIncludes, 2052 hsOpts.UseLibcxx); 2053 code = hash_combine(code, hsOpts.ResourceDir); 2054 2055 // Extend the signature with the user build path. 2056 code = hash_combine(code, hsOpts.ModuleUserBuildPath); 2057 2058 // Darwin-specific hack: if we have a sysroot, use the contents and 2059 // modification time of 2060 // $sysroot/System/Library/CoreServices/SystemVersion.plist 2061 // as part of the module hash. 2062 if (!hsOpts.Sysroot.empty()) { 2063 SmallString<128> systemVersionFile; 2064 systemVersionFile += hsOpts.Sysroot; 2065 llvm::sys::path::append(systemVersionFile, "System"); 2066 llvm::sys::path::append(systemVersionFile, "Library"); 2067 llvm::sys::path::append(systemVersionFile, "CoreServices"); 2068 llvm::sys::path::append(systemVersionFile, "SystemVersion.plist"); 2069 2070 llvm::ErrorOr<std::unique_ptr<llvm::MemoryBuffer>> buffer = 2071 llvm::MemoryBuffer::getFile(systemVersionFile); 2072 if (buffer) { 2073 code = hash_combine(code, buffer.get()->getBuffer()); 2074 2075 struct stat statBuf; 2076 if (stat(systemVersionFile.c_str(), &statBuf) == 0) 2077 code = hash_combine(code, statBuf.st_mtime); 2078 } 2079 } 2080 2081 return llvm::APInt(64, code).toString(36, /*Signed=*/false); 2082 } 2083 2084 namespace clang { 2085 2086 template<typename IntTy> 2087 static IntTy getLastArgIntValueImpl(const ArgList &Args, OptSpecifier Id, 2088 IntTy Default, 2089 DiagnosticsEngine *Diags) { 2090 IntTy Res = Default; 2091 if (Arg *A = Args.getLastArg(Id)) { 2092 if (StringRef(A->getValue()).getAsInteger(10, Res)) { 2093 if (Diags) 2094 Diags->Report(diag::err_drv_invalid_int_value) << A->getAsString(Args) 2095 << A->getValue(); 2096 } 2097 } 2098 return Res; 2099 } 2100 2101 2102 // Declared in clang/Frontend/Utils.h. 2103 int getLastArgIntValue(const ArgList &Args, OptSpecifier Id, int Default, 2104 DiagnosticsEngine *Diags) { 2105 return getLastArgIntValueImpl<int>(Args, Id, Default, Diags); 2106 } 2107 2108 uint64_t getLastArgUInt64Value(const ArgList &Args, OptSpecifier Id, 2109 uint64_t Default, 2110 DiagnosticsEngine *Diags) { 2111 return getLastArgIntValueImpl<uint64_t>(Args, Id, Default, Diags); 2112 } 2113 2114 void BuryPointer(const void *Ptr) { 2115 // This function may be called only a small fixed amount of times per each 2116 // invocation, otherwise we do actually have a leak which we want to report. 2117 // If this function is called more than kGraveYardMaxSize times, the pointers 2118 // will not be properly buried and a leak detector will report a leak, which 2119 // is what we want in such case. 2120 static const size_t kGraveYardMaxSize = 16; 2121 LLVM_ATTRIBUTE_UNUSED static const void *GraveYard[kGraveYardMaxSize]; 2122 static std::atomic<unsigned> GraveYardSize; 2123 unsigned Idx = GraveYardSize++; 2124 if (Idx >= kGraveYardMaxSize) 2125 return; 2126 GraveYard[Idx] = Ptr; 2127 } 2128 2129 IntrusiveRefCntPtr<vfs::FileSystem> 2130 createVFSFromCompilerInvocation(const CompilerInvocation &CI, 2131 DiagnosticsEngine &Diags) { 2132 if (CI.getHeaderSearchOpts().VFSOverlayFiles.empty()) 2133 return vfs::getRealFileSystem(); 2134 2135 IntrusiveRefCntPtr<vfs::OverlayFileSystem> 2136 Overlay(new vfs::OverlayFileSystem(vfs::getRealFileSystem())); 2137 // earlier vfs files are on the bottom 2138 for (const std::string &File : CI.getHeaderSearchOpts().VFSOverlayFiles) { 2139 llvm::ErrorOr<std::unique_ptr<llvm::MemoryBuffer>> Buffer = 2140 llvm::MemoryBuffer::getFile(File); 2141 if (!Buffer) { 2142 Diags.Report(diag::err_missing_vfs_overlay_file) << File; 2143 return IntrusiveRefCntPtr<vfs::FileSystem>(); 2144 } 2145 2146 IntrusiveRefCntPtr<vfs::FileSystem> FS = 2147 vfs::getVFSFromYAML(std::move(Buffer.get()), /*DiagHandler*/ nullptr); 2148 if (!FS.get()) { 2149 Diags.Report(diag::err_invalid_vfs_overlay) << File; 2150 return IntrusiveRefCntPtr<vfs::FileSystem>(); 2151 } 2152 Overlay->pushOverlay(FS); 2153 } 2154 return Overlay; 2155 } 2156 } // end namespace clang 2157