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/Linker/Linker.h" 29 #include "llvm/Option/Arg.h" 30 #include "llvm/Option/ArgList.h" 31 #include "llvm/Option/OptTable.h" 32 #include "llvm/Option/Option.h" 33 #include "llvm/Support/CodeGen.h" 34 #include "llvm/Support/ErrorHandling.h" 35 #include "llvm/Support/FileSystem.h" 36 #include "llvm/Support/Host.h" 37 #include "llvm/Support/Path.h" 38 #include "llvm/Support/Process.h" 39 #include <atomic> 40 #include <memory> 41 #include <sys/stat.h> 42 #include <system_error> 43 using namespace clang; 44 45 //===----------------------------------------------------------------------===// 46 // Initialization. 47 //===----------------------------------------------------------------------===// 48 49 CompilerInvocationBase::CompilerInvocationBase() 50 : LangOpts(new LangOptions()), TargetOpts(new TargetOptions()), 51 DiagnosticOpts(new DiagnosticOptions()), 52 HeaderSearchOpts(new HeaderSearchOptions()), 53 PreprocessorOpts(new PreprocessorOptions()) {} 54 55 CompilerInvocationBase::CompilerInvocationBase(const CompilerInvocationBase &X) 56 : RefCountedBase<CompilerInvocation>(), 57 LangOpts(new LangOptions(*X.getLangOpts())), 58 TargetOpts(new TargetOptions(X.getTargetOpts())), 59 DiagnosticOpts(new DiagnosticOptions(X.getDiagnosticOpts())), 60 HeaderSearchOpts(new HeaderSearchOptions(X.getHeaderSearchOpts())), 61 PreprocessorOpts(new PreprocessorOptions(X.getPreprocessorOpts())) {} 62 63 CompilerInvocationBase::~CompilerInvocationBase() {} 64 65 //===----------------------------------------------------------------------===// 66 // Deserialization (from args) 67 //===----------------------------------------------------------------------===// 68 69 using namespace clang::driver; 70 using namespace clang::driver::options; 71 using namespace llvm::opt; 72 73 // 74 75 static unsigned getOptimizationLevel(ArgList &Args, InputKind IK, 76 DiagnosticsEngine &Diags) { 77 unsigned DefaultOpt = 0; 78 if (IK == IK_OpenCL && !Args.hasArg(OPT_cl_opt_disable)) 79 DefaultOpt = 2; 80 81 if (Arg *A = Args.getLastArg(options::OPT_O_Group)) { 82 if (A->getOption().matches(options::OPT_O0)) 83 return 0; 84 85 if (A->getOption().matches(options::OPT_Ofast)) 86 return 3; 87 88 assert (A->getOption().matches(options::OPT_O)); 89 90 StringRef S(A->getValue()); 91 if (S == "s" || S == "z" || S.empty()) 92 return 2; 93 94 return getLastArgIntValue(Args, OPT_O, DefaultOpt, Diags); 95 } 96 97 return DefaultOpt; 98 } 99 100 static unsigned getOptimizationLevelSize(ArgList &Args) { 101 if (Arg *A = Args.getLastArg(options::OPT_O_Group)) { 102 if (A->getOption().matches(options::OPT_O)) { 103 switch (A->getValue()[0]) { 104 default: 105 return 0; 106 case 's': 107 return 1; 108 case 'z': 109 return 2; 110 } 111 } 112 } 113 return 0; 114 } 115 116 static void addDiagnosticArgs(ArgList &Args, OptSpecifier Group, 117 OptSpecifier GroupWithValue, 118 std::vector<std::string> &Diagnostics) { 119 for (Arg *A : Args.filtered(Group)) { 120 if (A->getOption().getKind() == Option::FlagClass) { 121 // The argument is a pure flag (such as OPT_Wall or OPT_Wdeprecated). Add 122 // its name (minus the "W" or "R" at the beginning) to the warning list. 123 Diagnostics.push_back(A->getOption().getName().drop_front(1)); 124 } else if (A->getOption().matches(GroupWithValue)) { 125 // This is -Wfoo= or -Rfoo=, where foo is the name of the diagnostic group. 126 Diagnostics.push_back(A->getOption().getName().drop_front(1).rtrim("=-")); 127 } else { 128 // Otherwise, add its value (for OPT_W_Joined and similar). 129 for (const char *Arg : A->getValues()) 130 Diagnostics.emplace_back(Arg); 131 } 132 } 133 } 134 135 static bool ParseAnalyzerArgs(AnalyzerOptions &Opts, ArgList &Args, 136 DiagnosticsEngine &Diags) { 137 using namespace options; 138 bool Success = true; 139 if (Arg *A = Args.getLastArg(OPT_analyzer_store)) { 140 StringRef Name = A->getValue(); 141 AnalysisStores Value = llvm::StringSwitch<AnalysisStores>(Name) 142 #define ANALYSIS_STORE(NAME, CMDFLAG, DESC, CREATFN) \ 143 .Case(CMDFLAG, NAME##Model) 144 #include "clang/StaticAnalyzer/Core/Analyses.def" 145 .Default(NumStores); 146 if (Value == NumStores) { 147 Diags.Report(diag::err_drv_invalid_value) 148 << A->getAsString(Args) << Name; 149 Success = false; 150 } else { 151 Opts.AnalysisStoreOpt = Value; 152 } 153 } 154 155 if (Arg *A = Args.getLastArg(OPT_analyzer_constraints)) { 156 StringRef Name = A->getValue(); 157 AnalysisConstraints Value = llvm::StringSwitch<AnalysisConstraints>(Name) 158 #define ANALYSIS_CONSTRAINTS(NAME, CMDFLAG, DESC, CREATFN) \ 159 .Case(CMDFLAG, NAME##Model) 160 #include "clang/StaticAnalyzer/Core/Analyses.def" 161 .Default(NumConstraints); 162 if (Value == NumConstraints) { 163 Diags.Report(diag::err_drv_invalid_value) 164 << A->getAsString(Args) << Name; 165 Success = false; 166 } else { 167 Opts.AnalysisConstraintsOpt = Value; 168 } 169 } 170 171 if (Arg *A = Args.getLastArg(OPT_analyzer_output)) { 172 StringRef Name = A->getValue(); 173 AnalysisDiagClients Value = llvm::StringSwitch<AnalysisDiagClients>(Name) 174 #define ANALYSIS_DIAGNOSTICS(NAME, CMDFLAG, DESC, CREATFN) \ 175 .Case(CMDFLAG, PD_##NAME) 176 #include "clang/StaticAnalyzer/Core/Analyses.def" 177 .Default(NUM_ANALYSIS_DIAG_CLIENTS); 178 if (Value == NUM_ANALYSIS_DIAG_CLIENTS) { 179 Diags.Report(diag::err_drv_invalid_value) 180 << A->getAsString(Args) << Name; 181 Success = false; 182 } else { 183 Opts.AnalysisDiagOpt = Value; 184 } 185 } 186 187 if (Arg *A = Args.getLastArg(OPT_analyzer_purge)) { 188 StringRef Name = A->getValue(); 189 AnalysisPurgeMode Value = llvm::StringSwitch<AnalysisPurgeMode>(Name) 190 #define ANALYSIS_PURGE(NAME, CMDFLAG, DESC) \ 191 .Case(CMDFLAG, NAME) 192 #include "clang/StaticAnalyzer/Core/Analyses.def" 193 .Default(NumPurgeModes); 194 if (Value == NumPurgeModes) { 195 Diags.Report(diag::err_drv_invalid_value) 196 << A->getAsString(Args) << Name; 197 Success = false; 198 } else { 199 Opts.AnalysisPurgeOpt = Value; 200 } 201 } 202 203 if (Arg *A = Args.getLastArg(OPT_analyzer_inlining_mode)) { 204 StringRef Name = A->getValue(); 205 AnalysisInliningMode Value = llvm::StringSwitch<AnalysisInliningMode>(Name) 206 #define ANALYSIS_INLINING_MODE(NAME, CMDFLAG, DESC) \ 207 .Case(CMDFLAG, NAME) 208 #include "clang/StaticAnalyzer/Core/Analyses.def" 209 .Default(NumInliningModes); 210 if (Value == NumInliningModes) { 211 Diags.Report(diag::err_drv_invalid_value) 212 << A->getAsString(Args) << Name; 213 Success = false; 214 } else { 215 Opts.InliningMode = Value; 216 } 217 } 218 219 Opts.ShowCheckerHelp = Args.hasArg(OPT_analyzer_checker_help); 220 Opts.DisableAllChecks = Args.hasArg(OPT_analyzer_disable_all_checks); 221 222 Opts.visualizeExplodedGraphWithGraphViz = 223 Args.hasArg(OPT_analyzer_viz_egraph_graphviz); 224 Opts.visualizeExplodedGraphWithUbiGraph = 225 Args.hasArg(OPT_analyzer_viz_egraph_ubigraph); 226 Opts.NoRetryExhausted = Args.hasArg(OPT_analyzer_disable_retry_exhausted); 227 Opts.AnalyzeAll = Args.hasArg(OPT_analyzer_opt_analyze_headers); 228 Opts.AnalyzerDisplayProgress = Args.hasArg(OPT_analyzer_display_progress); 229 Opts.AnalyzeNestedBlocks = 230 Args.hasArg(OPT_analyzer_opt_analyze_nested_blocks); 231 Opts.eagerlyAssumeBinOpBifurcation = Args.hasArg(OPT_analyzer_eagerly_assume); 232 Opts.AnalyzeSpecificFunction = Args.getLastArgValue(OPT_analyze_function); 233 Opts.UnoptimizedCFG = Args.hasArg(OPT_analysis_UnoptimizedCFG); 234 Opts.TrimGraph = Args.hasArg(OPT_trim_egraph); 235 Opts.maxBlockVisitOnPath = 236 getLastArgIntValue(Args, OPT_analyzer_max_loop, 4, Diags); 237 Opts.PrintStats = Args.hasArg(OPT_analyzer_stats); 238 Opts.InlineMaxStackDepth = 239 getLastArgIntValue(Args, OPT_analyzer_inline_max_stack_depth, 240 Opts.InlineMaxStackDepth, Diags); 241 242 Opts.CheckersControlList.clear(); 243 for (const Arg *A : 244 Args.filtered(OPT_analyzer_checker, OPT_analyzer_disable_checker)) { 245 A->claim(); 246 bool enable = (A->getOption().getID() == OPT_analyzer_checker); 247 // We can have a list of comma separated checker names, e.g: 248 // '-analyzer-checker=cocoa,unix' 249 StringRef checkerList = A->getValue(); 250 SmallVector<StringRef, 4> checkers; 251 checkerList.split(checkers, ","); 252 for (StringRef checker : checkers) 253 Opts.CheckersControlList.emplace_back(checker, enable); 254 } 255 256 // Go through the analyzer configuration options. 257 for (const Arg *A : Args.filtered(OPT_analyzer_config)) { 258 A->claim(); 259 // We can have a list of comma separated config names, e.g: 260 // '-analyzer-config key1=val1,key2=val2' 261 StringRef configList = A->getValue(); 262 SmallVector<StringRef, 4> configVals; 263 configList.split(configVals, ","); 264 for (unsigned i = 0, e = configVals.size(); i != e; ++i) { 265 StringRef key, val; 266 std::tie(key, val) = configVals[i].split("="); 267 if (val.empty()) { 268 Diags.Report(SourceLocation(), 269 diag::err_analyzer_config_no_value) << configVals[i]; 270 Success = false; 271 break; 272 } 273 if (val.find('=') != StringRef::npos) { 274 Diags.Report(SourceLocation(), 275 diag::err_analyzer_config_multiple_values) 276 << configVals[i]; 277 Success = false; 278 break; 279 } 280 Opts.Config[key] = val; 281 } 282 } 283 284 return Success; 285 } 286 287 static bool ParseMigratorArgs(MigratorOptions &Opts, ArgList &Args) { 288 Opts.NoNSAllocReallocError = Args.hasArg(OPT_migrator_no_nsalloc_error); 289 Opts.NoFinalizeRemoval = Args.hasArg(OPT_migrator_no_finalize_removal); 290 return true; 291 } 292 293 static void ParseCommentArgs(CommentOptions &Opts, ArgList &Args) { 294 Opts.BlockCommandNames = Args.getAllArgValues(OPT_fcomment_block_commands); 295 Opts.ParseAllComments = Args.hasArg(OPT_fparse_all_comments); 296 } 297 298 static StringRef getCodeModel(ArgList &Args, DiagnosticsEngine &Diags) { 299 if (Arg *A = Args.getLastArg(OPT_mcode_model)) { 300 StringRef Value = A->getValue(); 301 if (Value == "small" || Value == "kernel" || Value == "medium" || 302 Value == "large") 303 return Value; 304 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Value; 305 } 306 return "default"; 307 } 308 309 /// \brief Create a new Regex instance out of the string value in \p RpassArg. 310 /// It returns a pointer to the newly generated Regex instance. 311 static std::shared_ptr<llvm::Regex> 312 GenerateOptimizationRemarkRegex(DiagnosticsEngine &Diags, ArgList &Args, 313 Arg *RpassArg) { 314 StringRef Val = RpassArg->getValue(); 315 std::string RegexError; 316 std::shared_ptr<llvm::Regex> Pattern = std::make_shared<llvm::Regex>(Val); 317 if (!Pattern->isValid(RegexError)) { 318 Diags.Report(diag::err_drv_optimization_remark_pattern) 319 << RegexError << RpassArg->getAsString(Args); 320 Pattern.reset(); 321 } 322 return Pattern; 323 } 324 325 static bool parseDiagnosticLevelMask(StringRef FlagName, 326 const std::vector<std::string> &Levels, 327 DiagnosticsEngine *Diags, 328 DiagnosticLevelMask &M) { 329 bool Success = true; 330 for (const auto &Level : Levels) { 331 DiagnosticLevelMask const PM = 332 llvm::StringSwitch<DiagnosticLevelMask>(Level) 333 .Case("note", DiagnosticLevelMask::Note) 334 .Case("remark", DiagnosticLevelMask::Remark) 335 .Case("warning", DiagnosticLevelMask::Warning) 336 .Case("error", DiagnosticLevelMask::Error) 337 .Default(DiagnosticLevelMask::None); 338 if (PM == DiagnosticLevelMask::None) { 339 Success = false; 340 if (Diags) 341 Diags->Report(diag::err_drv_invalid_value) << FlagName << Level; 342 } 343 M = M | PM; 344 } 345 return Success; 346 } 347 348 static void parseSanitizerKinds(StringRef FlagName, 349 const std::vector<std::string> &Sanitizers, 350 DiagnosticsEngine &Diags, SanitizerSet &S) { 351 for (const auto &Sanitizer : Sanitizers) { 352 SanitizerMask K = parseSanitizerValue(Sanitizer, /*AllowGroups=*/false); 353 if (K == 0) 354 Diags.Report(diag::err_drv_invalid_value) << FlagName << Sanitizer; 355 else 356 S.set(K, true); 357 } 358 } 359 360 static bool ParseCodeGenArgs(CodeGenOptions &Opts, ArgList &Args, InputKind IK, 361 DiagnosticsEngine &Diags, 362 const TargetOptions &TargetOpts) { 363 using namespace options; 364 bool Success = true; 365 366 unsigned OptimizationLevel = getOptimizationLevel(Args, IK, Diags); 367 // TODO: This could be done in Driver 368 unsigned MaxOptLevel = 3; 369 if (OptimizationLevel > MaxOptLevel) { 370 // If the optimization level is not supported, fall back on the default 371 // optimization 372 Diags.Report(diag::warn_drv_optimization_value) 373 << Args.getLastArg(OPT_O)->getAsString(Args) << "-O" << MaxOptLevel; 374 OptimizationLevel = MaxOptLevel; 375 } 376 Opts.OptimizationLevel = OptimizationLevel; 377 378 // We must always run at least the always inlining pass. 379 Opts.setInlining( 380 (Opts.OptimizationLevel > 1) ? CodeGenOptions::NormalInlining 381 : CodeGenOptions::OnlyAlwaysInlining); 382 // -fno-inline-functions overrides OptimizationLevel > 1. 383 Opts.NoInline = Args.hasArg(OPT_fno_inline); 384 Opts.setInlining(Args.hasArg(OPT_fno_inline_functions) ? 385 CodeGenOptions::OnlyAlwaysInlining : Opts.getInlining()); 386 387 if (Arg *A = Args.getLastArg(OPT_fveclib)) { 388 StringRef Name = A->getValue(); 389 if (Name == "Accelerate") 390 Opts.setVecLib(CodeGenOptions::Accelerate); 391 else if (Name == "none") 392 Opts.setVecLib(CodeGenOptions::NoLibrary); 393 else 394 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Name; 395 } 396 397 if (Arg *A = Args.getLastArg(OPT_debug_info_kind_EQ)) { 398 Opts.setDebugInfo( 399 llvm::StringSwitch<CodeGenOptions::DebugInfoKind>(A->getValue()) 400 .Case("line-tables-only", CodeGenOptions::DebugLineTablesOnly) 401 .Case("limited", CodeGenOptions::LimitedDebugInfo) 402 .Case("standalone", CodeGenOptions::FullDebugInfo)); 403 } 404 Opts.DwarfVersion = getLastArgIntValue(Args, OPT_dwarf_version_EQ, 0, Diags); 405 Opts.DebugColumnInfo = Args.hasArg(OPT_dwarf_column_info); 406 Opts.EmitCodeView = Args.hasArg(OPT_gcodeview); 407 Opts.SplitDwarfFile = Args.getLastArgValue(OPT_split_dwarf_file); 408 Opts.DebugTypeExtRefs = Args.hasArg(OPT_dwarf_ext_refs); 409 410 for (const auto &Arg : Args.getAllArgValues(OPT_fdebug_prefix_map_EQ)) 411 Opts.DebugPrefixMap.insert(StringRef(Arg).split('=')); 412 413 if (const Arg *A = 414 Args.getLastArg(OPT_emit_llvm_uselists, OPT_no_emit_llvm_uselists)) 415 Opts.EmitLLVMUseLists = A->getOption().getID() == OPT_emit_llvm_uselists; 416 417 Opts.DisableLLVMOpts = Args.hasArg(OPT_disable_llvm_optzns); 418 Opts.DisableLLVMPasses = Args.hasArg(OPT_disable_llvm_passes); 419 Opts.DisableRedZone = Args.hasArg(OPT_disable_red_zone); 420 Opts.ForbidGuardVariables = Args.hasArg(OPT_fforbid_guard_variables); 421 Opts.UseRegisterSizedBitfieldAccess = Args.hasArg( 422 OPT_fuse_register_sized_bitfield_access); 423 Opts.RelaxedAliasing = Args.hasArg(OPT_relaxed_aliasing); 424 Opts.StructPathTBAA = !Args.hasArg(OPT_no_struct_path_tbaa); 425 Opts.DwarfDebugFlags = Args.getLastArgValue(OPT_dwarf_debug_flags); 426 Opts.MergeAllConstants = !Args.hasArg(OPT_fno_merge_all_constants); 427 Opts.NoCommon = Args.hasArg(OPT_fno_common); 428 Opts.NoImplicitFloat = Args.hasArg(OPT_no_implicit_float); 429 Opts.OptimizeSize = getOptimizationLevelSize(Args); 430 Opts.SimplifyLibCalls = !(Args.hasArg(OPT_fno_builtin) || 431 Args.hasArg(OPT_ffreestanding)); 432 Opts.UnrollLoops = 433 Args.hasFlag(OPT_funroll_loops, OPT_fno_unroll_loops, 434 (Opts.OptimizationLevel > 1 && !Opts.OptimizeSize)); 435 Opts.RerollLoops = Args.hasArg(OPT_freroll_loops); 436 437 Opts.DisableIntegratedAS = Args.hasArg(OPT_fno_integrated_as); 438 Opts.Autolink = !Args.hasArg(OPT_fno_autolink); 439 Opts.SampleProfileFile = Args.getLastArgValue(OPT_fprofile_sample_use_EQ); 440 Opts.ProfileInstrGenerate = Args.hasArg(OPT_fprofile_instr_generate) || 441 Args.hasArg(OPT_fprofile_instr_generate_EQ); 442 Opts.InstrProfileOutput = Args.getLastArgValue(OPT_fprofile_instr_generate_EQ); 443 Opts.InstrProfileInput = Args.getLastArgValue(OPT_fprofile_instr_use_EQ); 444 Opts.CoverageMapping = 445 Args.hasFlag(OPT_fcoverage_mapping, OPT_fno_coverage_mapping, false); 446 Opts.DumpCoverageMapping = Args.hasArg(OPT_dump_coverage_mapping); 447 Opts.AsmVerbose = Args.hasArg(OPT_masm_verbose); 448 Opts.ObjCAutoRefCountExceptions = Args.hasArg(OPT_fobjc_arc_exceptions); 449 Opts.CXAAtExit = !Args.hasArg(OPT_fno_use_cxa_atexit); 450 Opts.CXXCtorDtorAliases = Args.hasArg(OPT_mconstructor_aliases); 451 Opts.CodeModel = getCodeModel(Args, Diags); 452 Opts.DebugPass = Args.getLastArgValue(OPT_mdebug_pass); 453 Opts.DisableFPElim = Args.hasArg(OPT_mdisable_fp_elim); 454 Opts.DisableFree = Args.hasArg(OPT_disable_free); 455 Opts.DisableTailCalls = Args.hasArg(OPT_mdisable_tail_calls); 456 Opts.FloatABI = Args.getLastArgValue(OPT_mfloat_abi); 457 Opts.LessPreciseFPMAD = Args.hasArg(OPT_cl_mad_enable); 458 Opts.LimitFloatPrecision = Args.getLastArgValue(OPT_mlimit_float_precision); 459 Opts.NoInfsFPMath = (Args.hasArg(OPT_menable_no_infinities) || 460 Args.hasArg(OPT_cl_finite_math_only) || 461 Args.hasArg(OPT_cl_fast_relaxed_math)); 462 Opts.NoNaNsFPMath = (Args.hasArg(OPT_menable_no_nans) || 463 Args.hasArg(OPT_cl_unsafe_math_optimizations) || 464 Args.hasArg(OPT_cl_finite_math_only) || 465 Args.hasArg(OPT_cl_fast_relaxed_math)); 466 Opts.NoSignedZeros = Args.hasArg(OPT_fno_signed_zeros); 467 Opts.ReciprocalMath = Args.hasArg(OPT_freciprocal_math); 468 Opts.NoZeroInitializedInBSS = Args.hasArg(OPT_mno_zero_initialized_in_bss); 469 Opts.BackendOptions = Args.getAllArgValues(OPT_backend_option); 470 Opts.NumRegisterParameters = getLastArgIntValue(Args, OPT_mregparm, 0, Diags); 471 Opts.NoExecStack = Args.hasArg(OPT_mno_exec_stack); 472 Opts.FatalWarnings = Args.hasArg(OPT_massembler_fatal_warnings); 473 Opts.EnableSegmentedStacks = Args.hasArg(OPT_split_stacks); 474 Opts.RelaxAll = Args.hasArg(OPT_mrelax_all); 475 Opts.OmitLeafFramePointer = Args.hasArg(OPT_momit_leaf_frame_pointer); 476 Opts.SaveTempLabels = Args.hasArg(OPT_msave_temp_labels); 477 Opts.NoDwarfDirectoryAsm = Args.hasArg(OPT_fno_dwarf_directory_asm); 478 Opts.SoftFloat = Args.hasArg(OPT_msoft_float); 479 Opts.StrictEnums = Args.hasArg(OPT_fstrict_enums); 480 Opts.StrictVTablePointers = Args.hasArg(OPT_fstrict_vtable_pointers); 481 Opts.UnsafeFPMath = Args.hasArg(OPT_menable_unsafe_fp_math) || 482 Args.hasArg(OPT_cl_unsafe_math_optimizations) || 483 Args.hasArg(OPT_cl_fast_relaxed_math); 484 Opts.UnwindTables = Args.hasArg(OPT_munwind_tables); 485 Opts.RelocationModel = Args.getLastArgValue(OPT_mrelocation_model, "pic"); 486 Opts.ThreadModel = Args.getLastArgValue(OPT_mthread_model, "posix"); 487 if (Opts.ThreadModel != "posix" && Opts.ThreadModel != "single") 488 Diags.Report(diag::err_drv_invalid_value) 489 << Args.getLastArg(OPT_mthread_model)->getAsString(Args) 490 << Opts.ThreadModel; 491 Opts.TrapFuncName = Args.getLastArgValue(OPT_ftrap_function_EQ); 492 Opts.UseInitArray = Args.hasArg(OPT_fuse_init_array); 493 494 Opts.FunctionSections = Args.hasFlag(OPT_ffunction_sections, 495 OPT_fno_function_sections, false); 496 Opts.DataSections = Args.hasFlag(OPT_fdata_sections, 497 OPT_fno_data_sections, false); 498 Opts.UniqueSectionNames = Args.hasFlag(OPT_funique_section_names, 499 OPT_fno_unique_section_names, true); 500 501 Opts.MergeFunctions = Args.hasArg(OPT_fmerge_functions); 502 503 Opts.PrepareForLTO = Args.hasArg(OPT_flto, OPT_flto_EQ); 504 const Arg *A = Args.getLastArg(OPT_flto, OPT_flto_EQ); 505 Opts.EmitFunctionSummary = A && A->containsValue("thin"); 506 507 Opts.MSVolatile = Args.hasArg(OPT_fms_volatile); 508 509 Opts.VectorizeBB = Args.hasArg(OPT_vectorize_slp_aggressive); 510 Opts.VectorizeLoop = Args.hasArg(OPT_vectorize_loops); 511 Opts.VectorizeSLP = Args.hasArg(OPT_vectorize_slp); 512 513 Opts.MainFileName = Args.getLastArgValue(OPT_main_file_name); 514 Opts.VerifyModule = !Args.hasArg(OPT_disable_llvm_verifier); 515 516 Opts.DisableGCov = Args.hasArg(OPT_test_coverage); 517 Opts.EmitGcovArcs = Args.hasArg(OPT_femit_coverage_data); 518 Opts.EmitGcovNotes = Args.hasArg(OPT_femit_coverage_notes); 519 if (Opts.EmitGcovArcs || Opts.EmitGcovNotes) { 520 Opts.CoverageFile = Args.getLastArgValue(OPT_coverage_file); 521 Opts.CoverageExtraChecksum = Args.hasArg(OPT_coverage_cfg_checksum); 522 Opts.CoverageNoFunctionNamesInData = 523 Args.hasArg(OPT_coverage_no_function_names_in_data); 524 Opts.CoverageExitBlockBeforeBody = 525 Args.hasArg(OPT_coverage_exit_block_before_body); 526 if (Args.hasArg(OPT_coverage_version_EQ)) { 527 StringRef CoverageVersion = Args.getLastArgValue(OPT_coverage_version_EQ); 528 if (CoverageVersion.size() != 4) { 529 Diags.Report(diag::err_drv_invalid_value) 530 << Args.getLastArg(OPT_coverage_version_EQ)->getAsString(Args) 531 << CoverageVersion; 532 } else { 533 memcpy(Opts.CoverageVersion, CoverageVersion.data(), 4); 534 } 535 } 536 } 537 538 Opts.InstrumentFunctions = Args.hasArg(OPT_finstrument_functions); 539 Opts.InstrumentForProfiling = Args.hasArg(OPT_pg); 540 Opts.EmitOpenCLArgMetadata = Args.hasArg(OPT_cl_kernel_arg_info); 541 Opts.CompressDebugSections = Args.hasArg(OPT_compress_debug_sections); 542 Opts.DebugCompilationDir = Args.getLastArgValue(OPT_fdebug_compilation_dir); 543 for (auto A : Args.filtered(OPT_mlink_bitcode_file, OPT_mlink_cuda_bitcode)) { 544 unsigned LinkFlags = llvm::Linker::Flags::None; 545 if (A->getOption().matches(OPT_mlink_cuda_bitcode)) 546 LinkFlags = llvm::Linker::Flags::LinkOnlyNeeded | 547 llvm::Linker::Flags::InternalizeLinkedSymbols; 548 Opts.LinkBitcodeFiles.push_back(std::make_pair(LinkFlags, A->getValue())); 549 } 550 Opts.SanitizeCoverageType = 551 getLastArgIntValue(Args, OPT_fsanitize_coverage_type, 0, Diags); 552 Opts.SanitizeCoverageIndirectCalls = 553 Args.hasArg(OPT_fsanitize_coverage_indirect_calls); 554 Opts.SanitizeCoverageTraceBB = Args.hasArg(OPT_fsanitize_coverage_trace_bb); 555 Opts.SanitizeCoverageTraceCmp = Args.hasArg(OPT_fsanitize_coverage_trace_cmp); 556 Opts.SanitizeCoverage8bitCounters = 557 Args.hasArg(OPT_fsanitize_coverage_8bit_counters); 558 Opts.SanitizeMemoryTrackOrigins = 559 getLastArgIntValue(Args, OPT_fsanitize_memory_track_origins_EQ, 0, Diags); 560 Opts.SanitizeMemoryUseAfterDtor = 561 Args.hasArg(OPT_fsanitize_memory_use_after_dtor); 562 Opts.SSPBufferSize = 563 getLastArgIntValue(Args, OPT_stack_protector_buffer_size, 8, Diags); 564 Opts.StackRealignment = Args.hasArg(OPT_mstackrealign); 565 if (Arg *A = Args.getLastArg(OPT_mstack_alignment)) { 566 StringRef Val = A->getValue(); 567 unsigned StackAlignment = Opts.StackAlignment; 568 Val.getAsInteger(10, StackAlignment); 569 Opts.StackAlignment = StackAlignment; 570 } 571 572 if (Arg *A = Args.getLastArg(OPT_mstack_probe_size)) { 573 StringRef Val = A->getValue(); 574 unsigned StackProbeSize = Opts.StackProbeSize; 575 Val.getAsInteger(0, StackProbeSize); 576 Opts.StackProbeSize = StackProbeSize; 577 } 578 579 if (Arg *A = Args.getLastArg(OPT_fobjc_dispatch_method_EQ)) { 580 StringRef Name = A->getValue(); 581 unsigned Method = llvm::StringSwitch<unsigned>(Name) 582 .Case("legacy", CodeGenOptions::Legacy) 583 .Case("non-legacy", CodeGenOptions::NonLegacy) 584 .Case("mixed", CodeGenOptions::Mixed) 585 .Default(~0U); 586 if (Method == ~0U) { 587 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Name; 588 Success = false; 589 } else { 590 Opts.setObjCDispatchMethod( 591 static_cast<CodeGenOptions::ObjCDispatchMethodKind>(Method)); 592 } 593 } 594 595 Opts.EmulatedTLS = 596 Args.hasFlag(OPT_femulated_tls, OPT_fno_emulated_tls, false); 597 598 if (Arg *A = Args.getLastArg(OPT_ftlsmodel_EQ)) { 599 StringRef Name = A->getValue(); 600 unsigned Model = llvm::StringSwitch<unsigned>(Name) 601 .Case("global-dynamic", CodeGenOptions::GeneralDynamicTLSModel) 602 .Case("local-dynamic", CodeGenOptions::LocalDynamicTLSModel) 603 .Case("initial-exec", CodeGenOptions::InitialExecTLSModel) 604 .Case("local-exec", CodeGenOptions::LocalExecTLSModel) 605 .Default(~0U); 606 if (Model == ~0U) { 607 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Name; 608 Success = false; 609 } else { 610 Opts.setDefaultTLSModel(static_cast<CodeGenOptions::TLSModel>(Model)); 611 } 612 } 613 614 if (Arg *A = Args.getLastArg(OPT_ffp_contract)) { 615 StringRef Val = A->getValue(); 616 if (Val == "fast") 617 Opts.setFPContractMode(CodeGenOptions::FPC_Fast); 618 else if (Val == "on") 619 Opts.setFPContractMode(CodeGenOptions::FPC_On); 620 else if (Val == "off") 621 Opts.setFPContractMode(CodeGenOptions::FPC_Off); 622 else 623 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Val; 624 } 625 626 if (Arg *A = Args.getLastArg(OPT_fpcc_struct_return, OPT_freg_struct_return)) { 627 if (A->getOption().matches(OPT_fpcc_struct_return)) { 628 Opts.setStructReturnConvention(CodeGenOptions::SRCK_OnStack); 629 } else { 630 assert(A->getOption().matches(OPT_freg_struct_return)); 631 Opts.setStructReturnConvention(CodeGenOptions::SRCK_InRegs); 632 } 633 } 634 635 Opts.DependentLibraries = Args.getAllArgValues(OPT_dependent_lib); 636 bool NeedLocTracking = false; 637 638 if (Arg *A = Args.getLastArg(OPT_Rpass_EQ)) { 639 Opts.OptimizationRemarkPattern = 640 GenerateOptimizationRemarkRegex(Diags, Args, A); 641 NeedLocTracking = true; 642 } 643 644 if (Arg *A = Args.getLastArg(OPT_Rpass_missed_EQ)) { 645 Opts.OptimizationRemarkMissedPattern = 646 GenerateOptimizationRemarkRegex(Diags, Args, A); 647 NeedLocTracking = true; 648 } 649 650 if (Arg *A = Args.getLastArg(OPT_Rpass_analysis_EQ)) { 651 Opts.OptimizationRemarkAnalysisPattern = 652 GenerateOptimizationRemarkRegex(Diags, Args, A); 653 NeedLocTracking = true; 654 } 655 656 // If the user requested to use a sample profile for PGO, then the 657 // backend will need to track source location information so the profile 658 // can be incorporated into the IR. 659 if (!Opts.SampleProfileFile.empty()) 660 NeedLocTracking = true; 661 662 // If the user requested a flag that requires source locations available in 663 // the backend, make sure that the backend tracks source location information. 664 if (NeedLocTracking && Opts.getDebugInfo() == CodeGenOptions::NoDebugInfo) 665 Opts.setDebugInfo(CodeGenOptions::LocTrackingOnly); 666 667 Opts.RewriteMapFiles = Args.getAllArgValues(OPT_frewrite_map_file); 668 669 // Parse -fsanitize-recover= arguments. 670 // FIXME: Report unrecoverable sanitizers incorrectly specified here. 671 parseSanitizerKinds("-fsanitize-recover=", 672 Args.getAllArgValues(OPT_fsanitize_recover_EQ), Diags, 673 Opts.SanitizeRecover); 674 parseSanitizerKinds("-fsanitize-trap=", 675 Args.getAllArgValues(OPT_fsanitize_trap_EQ), Diags, 676 Opts.SanitizeTrap); 677 678 Opts.CudaGpuBinaryFileNames = 679 Args.getAllArgValues(OPT_fcuda_include_gpubinary); 680 681 return Success; 682 } 683 684 static void ParseDependencyOutputArgs(DependencyOutputOptions &Opts, 685 ArgList &Args) { 686 using namespace options; 687 Opts.OutputFile = Args.getLastArgValue(OPT_dependency_file); 688 Opts.Targets = Args.getAllArgValues(OPT_MT); 689 Opts.IncludeSystemHeaders = Args.hasArg(OPT_sys_header_deps); 690 Opts.IncludeModuleFiles = Args.hasArg(OPT_module_file_deps); 691 Opts.UsePhonyTargets = Args.hasArg(OPT_MP); 692 Opts.ShowHeaderIncludes = Args.hasArg(OPT_H); 693 Opts.HeaderIncludeOutputFile = Args.getLastArgValue(OPT_header_include_file); 694 Opts.AddMissingHeaderDeps = Args.hasArg(OPT_MG); 695 Opts.PrintShowIncludes = Args.hasArg(OPT_show_includes); 696 Opts.DOTOutputFile = Args.getLastArgValue(OPT_dependency_dot); 697 Opts.ModuleDependencyOutputDir = 698 Args.getLastArgValue(OPT_module_dependency_dir); 699 if (Args.hasArg(OPT_MV)) 700 Opts.OutputFormat = DependencyOutputFormat::NMake; 701 // Add sanitizer blacklists as extra dependencies. 702 // They won't be discovered by the regular preprocessor, so 703 // we let make / ninja to know about this implicit dependency. 704 Opts.ExtraDeps = Args.getAllArgValues(OPT_fdepfile_entry); 705 auto ModuleFiles = Args.getAllArgValues(OPT_fmodule_file); 706 Opts.ExtraDeps.insert(Opts.ExtraDeps.end(), ModuleFiles.begin(), 707 ModuleFiles.end()); 708 } 709 710 bool clang::ParseDiagnosticArgs(DiagnosticOptions &Opts, ArgList &Args, 711 DiagnosticsEngine *Diags) { 712 using namespace options; 713 bool Success = true; 714 715 Opts.DiagnosticLogFile = Args.getLastArgValue(OPT_diagnostic_log_file); 716 if (Arg *A = 717 Args.getLastArg(OPT_diagnostic_serialized_file, OPT__serialize_diags)) 718 Opts.DiagnosticSerializationFile = A->getValue(); 719 Opts.IgnoreWarnings = Args.hasArg(OPT_w); 720 Opts.NoRewriteMacros = Args.hasArg(OPT_Wno_rewrite_macros); 721 Opts.Pedantic = Args.hasArg(OPT_pedantic); 722 Opts.PedanticErrors = Args.hasArg(OPT_pedantic_errors); 723 Opts.ShowCarets = !Args.hasArg(OPT_fno_caret_diagnostics); 724 Opts.ShowColors = Args.hasArg(OPT_fcolor_diagnostics); 725 Opts.ShowColumn = Args.hasFlag(OPT_fshow_column, 726 OPT_fno_show_column, 727 /*Default=*/true); 728 Opts.ShowFixits = !Args.hasArg(OPT_fno_diagnostics_fixit_info); 729 Opts.ShowLocation = !Args.hasArg(OPT_fno_show_source_location); 730 Opts.ShowOptionNames = Args.hasArg(OPT_fdiagnostics_show_option); 731 732 llvm::sys::Process::UseANSIEscapeCodes(Args.hasArg(OPT_fansi_escape_codes)); 733 734 // Default behavior is to not to show note include stacks. 735 Opts.ShowNoteIncludeStack = false; 736 if (Arg *A = Args.getLastArg(OPT_fdiagnostics_show_note_include_stack, 737 OPT_fno_diagnostics_show_note_include_stack)) 738 if (A->getOption().matches(OPT_fdiagnostics_show_note_include_stack)) 739 Opts.ShowNoteIncludeStack = true; 740 741 StringRef ShowOverloads = 742 Args.getLastArgValue(OPT_fshow_overloads_EQ, "all"); 743 if (ShowOverloads == "best") 744 Opts.setShowOverloads(Ovl_Best); 745 else if (ShowOverloads == "all") 746 Opts.setShowOverloads(Ovl_All); 747 else { 748 Success = false; 749 if (Diags) 750 Diags->Report(diag::err_drv_invalid_value) 751 << Args.getLastArg(OPT_fshow_overloads_EQ)->getAsString(Args) 752 << ShowOverloads; 753 } 754 755 StringRef ShowCategory = 756 Args.getLastArgValue(OPT_fdiagnostics_show_category, "none"); 757 if (ShowCategory == "none") 758 Opts.ShowCategories = 0; 759 else if (ShowCategory == "id") 760 Opts.ShowCategories = 1; 761 else if (ShowCategory == "name") 762 Opts.ShowCategories = 2; 763 else { 764 Success = false; 765 if (Diags) 766 Diags->Report(diag::err_drv_invalid_value) 767 << Args.getLastArg(OPT_fdiagnostics_show_category)->getAsString(Args) 768 << ShowCategory; 769 } 770 771 StringRef Format = 772 Args.getLastArgValue(OPT_fdiagnostics_format, "clang"); 773 if (Format == "clang") 774 Opts.setFormat(DiagnosticOptions::Clang); 775 else if (Format == "msvc") 776 Opts.setFormat(DiagnosticOptions::MSVC); 777 else if (Format == "msvc-fallback") { 778 Opts.setFormat(DiagnosticOptions::MSVC); 779 Opts.CLFallbackMode = true; 780 } else if (Format == "vi") 781 Opts.setFormat(DiagnosticOptions::Vi); 782 else { 783 Success = false; 784 if (Diags) 785 Diags->Report(diag::err_drv_invalid_value) 786 << Args.getLastArg(OPT_fdiagnostics_format)->getAsString(Args) 787 << Format; 788 } 789 790 Opts.ShowSourceRanges = Args.hasArg(OPT_fdiagnostics_print_source_range_info); 791 Opts.ShowParseableFixits = Args.hasArg(OPT_fdiagnostics_parseable_fixits); 792 Opts.ShowPresumedLoc = !Args.hasArg(OPT_fno_diagnostics_use_presumed_location); 793 Opts.VerifyDiagnostics = Args.hasArg(OPT_verify); 794 DiagnosticLevelMask DiagMask = DiagnosticLevelMask::None; 795 Success &= parseDiagnosticLevelMask("-verify-ignore-unexpected=", 796 Args.getAllArgValues(OPT_verify_ignore_unexpected_EQ), 797 Diags, DiagMask); 798 if (Args.hasArg(OPT_verify_ignore_unexpected)) 799 DiagMask = DiagnosticLevelMask::All; 800 Opts.setVerifyIgnoreUnexpected(DiagMask); 801 Opts.ElideType = !Args.hasArg(OPT_fno_elide_type); 802 Opts.ShowTemplateTree = Args.hasArg(OPT_fdiagnostics_show_template_tree); 803 Opts.ErrorLimit = getLastArgIntValue(Args, OPT_ferror_limit, 0, Diags); 804 Opts.MacroBacktraceLimit = 805 getLastArgIntValue(Args, OPT_fmacro_backtrace_limit, 806 DiagnosticOptions::DefaultMacroBacktraceLimit, Diags); 807 Opts.TemplateBacktraceLimit = getLastArgIntValue( 808 Args, OPT_ftemplate_backtrace_limit, 809 DiagnosticOptions::DefaultTemplateBacktraceLimit, Diags); 810 Opts.ConstexprBacktraceLimit = getLastArgIntValue( 811 Args, OPT_fconstexpr_backtrace_limit, 812 DiagnosticOptions::DefaultConstexprBacktraceLimit, Diags); 813 Opts.SpellCheckingLimit = getLastArgIntValue( 814 Args, OPT_fspell_checking_limit, 815 DiagnosticOptions::DefaultSpellCheckingLimit, Diags); 816 Opts.TabStop = getLastArgIntValue(Args, OPT_ftabstop, 817 DiagnosticOptions::DefaultTabStop, Diags); 818 if (Opts.TabStop == 0 || Opts.TabStop > DiagnosticOptions::MaxTabStop) { 819 Opts.TabStop = DiagnosticOptions::DefaultTabStop; 820 if (Diags) 821 Diags->Report(diag::warn_ignoring_ftabstop_value) 822 << Opts.TabStop << DiagnosticOptions::DefaultTabStop; 823 } 824 Opts.MessageLength = getLastArgIntValue(Args, OPT_fmessage_length, 0, Diags); 825 addDiagnosticArgs(Args, OPT_W_Group, OPT_W_value_Group, Opts.Warnings); 826 addDiagnosticArgs(Args, OPT_R_Group, OPT_R_value_Group, Opts.Remarks); 827 828 return Success; 829 } 830 831 static void ParseFileSystemArgs(FileSystemOptions &Opts, ArgList &Args) { 832 Opts.WorkingDir = Args.getLastArgValue(OPT_working_directory); 833 } 834 835 static InputKind ParseFrontendArgs(FrontendOptions &Opts, ArgList &Args, 836 DiagnosticsEngine &Diags) { 837 using namespace options; 838 Opts.ProgramAction = frontend::ParseSyntaxOnly; 839 if (const Arg *A = Args.getLastArg(OPT_Action_Group)) { 840 switch (A->getOption().getID()) { 841 default: 842 llvm_unreachable("Invalid option in group!"); 843 case OPT_ast_list: 844 Opts.ProgramAction = frontend::ASTDeclList; break; 845 case OPT_ast_dump: 846 case OPT_ast_dump_lookups: 847 Opts.ProgramAction = frontend::ASTDump; break; 848 case OPT_ast_print: 849 Opts.ProgramAction = frontend::ASTPrint; break; 850 case OPT_ast_view: 851 Opts.ProgramAction = frontend::ASTView; break; 852 case OPT_dump_raw_tokens: 853 Opts.ProgramAction = frontend::DumpRawTokens; break; 854 case OPT_dump_tokens: 855 Opts.ProgramAction = frontend::DumpTokens; break; 856 case OPT_S: 857 Opts.ProgramAction = frontend::EmitAssembly; break; 858 case OPT_emit_llvm_bc: 859 Opts.ProgramAction = frontend::EmitBC; break; 860 case OPT_emit_html: 861 Opts.ProgramAction = frontend::EmitHTML; break; 862 case OPT_emit_llvm: 863 Opts.ProgramAction = frontend::EmitLLVM; break; 864 case OPT_emit_llvm_only: 865 Opts.ProgramAction = frontend::EmitLLVMOnly; break; 866 case OPT_emit_codegen_only: 867 Opts.ProgramAction = frontend::EmitCodeGenOnly; break; 868 case OPT_emit_obj: 869 Opts.ProgramAction = frontend::EmitObj; break; 870 case OPT_fixit_EQ: 871 Opts.FixItSuffix = A->getValue(); 872 // fall-through! 873 case OPT_fixit: 874 Opts.ProgramAction = frontend::FixIt; break; 875 case OPT_emit_module: 876 Opts.ProgramAction = frontend::GenerateModule; break; 877 case OPT_emit_pch: 878 Opts.ProgramAction = frontend::GeneratePCH; break; 879 case OPT_emit_pth: 880 Opts.ProgramAction = frontend::GeneratePTH; break; 881 case OPT_init_only: 882 Opts.ProgramAction = frontend::InitOnly; break; 883 case OPT_fsyntax_only: 884 Opts.ProgramAction = frontend::ParseSyntaxOnly; break; 885 case OPT_module_file_info: 886 Opts.ProgramAction = frontend::ModuleFileInfo; break; 887 case OPT_verify_pch: 888 Opts.ProgramAction = frontend::VerifyPCH; break; 889 case OPT_print_decl_contexts: 890 Opts.ProgramAction = frontend::PrintDeclContext; break; 891 case OPT_print_preamble: 892 Opts.ProgramAction = frontend::PrintPreamble; break; 893 case OPT_E: 894 Opts.ProgramAction = frontend::PrintPreprocessedInput; break; 895 case OPT_rewrite_macros: 896 Opts.ProgramAction = frontend::RewriteMacros; break; 897 case OPT_rewrite_objc: 898 Opts.ProgramAction = frontend::RewriteObjC; break; 899 case OPT_rewrite_test: 900 Opts.ProgramAction = frontend::RewriteTest; break; 901 case OPT_analyze: 902 Opts.ProgramAction = frontend::RunAnalysis; break; 903 case OPT_migrate: 904 Opts.ProgramAction = frontend::MigrateSource; break; 905 case OPT_Eonly: 906 Opts.ProgramAction = frontend::RunPreprocessorOnly; break; 907 } 908 } 909 910 if (const Arg* A = Args.getLastArg(OPT_plugin)) { 911 Opts.Plugins.emplace_back(A->getValue(0)); 912 Opts.ProgramAction = frontend::PluginAction; 913 Opts.ActionName = A->getValue(); 914 915 for (const Arg *AA : Args.filtered(OPT_plugin_arg)) 916 if (AA->getValue(0) == Opts.ActionName) 917 Opts.PluginArgs.emplace_back(AA->getValue(1)); 918 } 919 920 Opts.AddPluginActions = Args.getAllArgValues(OPT_add_plugin); 921 Opts.AddPluginArgs.resize(Opts.AddPluginActions.size()); 922 for (int i = 0, e = Opts.AddPluginActions.size(); i != e; ++i) 923 for (const Arg *A : Args.filtered(OPT_plugin_arg)) 924 if (A->getValue(0) == Opts.AddPluginActions[i]) 925 Opts.AddPluginArgs[i].emplace_back(A->getValue(1)); 926 927 if (const Arg *A = Args.getLastArg(OPT_code_completion_at)) { 928 Opts.CodeCompletionAt = 929 ParsedSourceLocation::FromString(A->getValue()); 930 if (Opts.CodeCompletionAt.FileName.empty()) 931 Diags.Report(diag::err_drv_invalid_value) 932 << A->getAsString(Args) << A->getValue(); 933 } 934 Opts.DisableFree = Args.hasArg(OPT_disable_free); 935 936 Opts.OutputFile = Args.getLastArgValue(OPT_o); 937 Opts.Plugins = Args.getAllArgValues(OPT_load); 938 Opts.RelocatablePCH = Args.hasArg(OPT_relocatable_pch); 939 Opts.ShowHelp = Args.hasArg(OPT_help); 940 Opts.ShowStats = Args.hasArg(OPT_print_stats); 941 Opts.ShowTimers = Args.hasArg(OPT_ftime_report); 942 Opts.ShowVersion = Args.hasArg(OPT_version); 943 Opts.ASTMergeFiles = Args.getAllArgValues(OPT_ast_merge); 944 Opts.LLVMArgs = Args.getAllArgValues(OPT_mllvm); 945 Opts.FixWhatYouCan = Args.hasArg(OPT_fix_what_you_can); 946 Opts.FixOnlyWarnings = Args.hasArg(OPT_fix_only_warnings); 947 Opts.FixAndRecompile = Args.hasArg(OPT_fixit_recompile); 948 Opts.FixToTemporaries = Args.hasArg(OPT_fixit_to_temp); 949 Opts.ASTDumpDecls = Args.hasArg(OPT_ast_dump); 950 Opts.ASTDumpFilter = Args.getLastArgValue(OPT_ast_dump_filter); 951 Opts.ASTDumpLookups = Args.hasArg(OPT_ast_dump_lookups); 952 Opts.UseGlobalModuleIndex = !Args.hasArg(OPT_fno_modules_global_index); 953 Opts.GenerateGlobalModuleIndex = Opts.UseGlobalModuleIndex; 954 Opts.ModuleMapFiles = Args.getAllArgValues(OPT_fmodule_map_file); 955 Opts.ModuleFiles = Args.getAllArgValues(OPT_fmodule_file); 956 Opts.ModulesEmbedFiles = Args.getAllArgValues(OPT_fmodules_embed_file_EQ); 957 958 Opts.CodeCompleteOpts.IncludeMacros 959 = Args.hasArg(OPT_code_completion_macros); 960 Opts.CodeCompleteOpts.IncludeCodePatterns 961 = Args.hasArg(OPT_code_completion_patterns); 962 Opts.CodeCompleteOpts.IncludeGlobals 963 = !Args.hasArg(OPT_no_code_completion_globals); 964 Opts.CodeCompleteOpts.IncludeBriefComments 965 = Args.hasArg(OPT_code_completion_brief_comments); 966 967 Opts.OverrideRecordLayoutsFile 968 = Args.getLastArgValue(OPT_foverride_record_layout_EQ); 969 Opts.AuxTriple = 970 llvm::Triple::normalize(Args.getLastArgValue(OPT_aux_triple)); 971 972 if (const Arg *A = Args.getLastArg(OPT_arcmt_check, 973 OPT_arcmt_modify, 974 OPT_arcmt_migrate)) { 975 switch (A->getOption().getID()) { 976 default: 977 llvm_unreachable("missed a case"); 978 case OPT_arcmt_check: 979 Opts.ARCMTAction = FrontendOptions::ARCMT_Check; 980 break; 981 case OPT_arcmt_modify: 982 Opts.ARCMTAction = FrontendOptions::ARCMT_Modify; 983 break; 984 case OPT_arcmt_migrate: 985 Opts.ARCMTAction = FrontendOptions::ARCMT_Migrate; 986 break; 987 } 988 } 989 Opts.MTMigrateDir = Args.getLastArgValue(OPT_mt_migrate_directory); 990 Opts.ARCMTMigrateReportOut 991 = Args.getLastArgValue(OPT_arcmt_migrate_report_output); 992 Opts.ARCMTMigrateEmitARCErrors 993 = Args.hasArg(OPT_arcmt_migrate_emit_arc_errors); 994 995 if (Args.hasArg(OPT_objcmt_migrate_literals)) 996 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_Literals; 997 if (Args.hasArg(OPT_objcmt_migrate_subscripting)) 998 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_Subscripting; 999 if (Args.hasArg(OPT_objcmt_migrate_property_dot_syntax)) 1000 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_PropertyDotSyntax; 1001 if (Args.hasArg(OPT_objcmt_migrate_property)) 1002 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_Property; 1003 if (Args.hasArg(OPT_objcmt_migrate_readonly_property)) 1004 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_ReadonlyProperty; 1005 if (Args.hasArg(OPT_objcmt_migrate_readwrite_property)) 1006 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_ReadwriteProperty; 1007 if (Args.hasArg(OPT_objcmt_migrate_annotation)) 1008 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_Annotation; 1009 if (Args.hasArg(OPT_objcmt_returns_innerpointer_property)) 1010 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_ReturnsInnerPointerProperty; 1011 if (Args.hasArg(OPT_objcmt_migrate_instancetype)) 1012 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_Instancetype; 1013 if (Args.hasArg(OPT_objcmt_migrate_nsmacros)) 1014 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_NsMacros; 1015 if (Args.hasArg(OPT_objcmt_migrate_protocol_conformance)) 1016 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_ProtocolConformance; 1017 if (Args.hasArg(OPT_objcmt_atomic_property)) 1018 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_AtomicProperty; 1019 if (Args.hasArg(OPT_objcmt_ns_nonatomic_iosonly)) 1020 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_NsAtomicIOSOnlyProperty; 1021 if (Args.hasArg(OPT_objcmt_migrate_designated_init)) 1022 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_DesignatedInitializer; 1023 if (Args.hasArg(OPT_objcmt_migrate_all)) 1024 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_MigrateDecls; 1025 1026 Opts.ObjCMTWhiteListPath = Args.getLastArgValue(OPT_objcmt_whitelist_dir_path); 1027 1028 if (Opts.ARCMTAction != FrontendOptions::ARCMT_None && 1029 Opts.ObjCMTAction != FrontendOptions::ObjCMT_None) { 1030 Diags.Report(diag::err_drv_argument_not_allowed_with) 1031 << "ARC migration" << "ObjC migration"; 1032 } 1033 1034 InputKind DashX = IK_None; 1035 if (const Arg *A = Args.getLastArg(OPT_x)) { 1036 DashX = llvm::StringSwitch<InputKind>(A->getValue()) 1037 .Case("c", IK_C) 1038 .Case("cl", IK_OpenCL) 1039 .Case("cuda", IK_CUDA) 1040 .Case("c++", IK_CXX) 1041 .Case("objective-c", IK_ObjC) 1042 .Case("objective-c++", IK_ObjCXX) 1043 .Case("cpp-output", IK_PreprocessedC) 1044 .Case("assembler-with-cpp", IK_Asm) 1045 .Case("c++-cpp-output", IK_PreprocessedCXX) 1046 .Case("cuda-cpp-output", IK_PreprocessedCuda) 1047 .Case("objective-c-cpp-output", IK_PreprocessedObjC) 1048 .Case("objc-cpp-output", IK_PreprocessedObjC) 1049 .Case("objective-c++-cpp-output", IK_PreprocessedObjCXX) 1050 .Case("objc++-cpp-output", IK_PreprocessedObjCXX) 1051 .Case("c-header", IK_C) 1052 .Case("cl-header", IK_OpenCL) 1053 .Case("objective-c-header", IK_ObjC) 1054 .Case("c++-header", IK_CXX) 1055 .Case("objective-c++-header", IK_ObjCXX) 1056 .Cases("ast", "pcm", IK_AST) 1057 .Case("ir", IK_LLVM_IR) 1058 .Default(IK_None); 1059 if (DashX == IK_None) 1060 Diags.Report(diag::err_drv_invalid_value) 1061 << A->getAsString(Args) << A->getValue(); 1062 } 1063 1064 // '-' is the default input if none is given. 1065 std::vector<std::string> Inputs = Args.getAllArgValues(OPT_INPUT); 1066 Opts.Inputs.clear(); 1067 if (Inputs.empty()) 1068 Inputs.push_back("-"); 1069 for (unsigned i = 0, e = Inputs.size(); i != e; ++i) { 1070 InputKind IK = DashX; 1071 if (IK == IK_None) { 1072 IK = FrontendOptions::getInputKindForExtension( 1073 StringRef(Inputs[i]).rsplit('.').second); 1074 // FIXME: Remove this hack. 1075 if (i == 0) 1076 DashX = IK; 1077 } 1078 Opts.Inputs.emplace_back(std::move(Inputs[i]), IK); 1079 } 1080 1081 return DashX; 1082 } 1083 1084 std::string CompilerInvocation::GetResourcesPath(const char *Argv0, 1085 void *MainAddr) { 1086 std::string ClangExecutable = 1087 llvm::sys::fs::getMainExecutable(Argv0, MainAddr); 1088 StringRef Dir = llvm::sys::path::parent_path(ClangExecutable); 1089 1090 // Compute the path to the resource directory. 1091 StringRef ClangResourceDir(CLANG_RESOURCE_DIR); 1092 SmallString<128> P(Dir); 1093 if (ClangResourceDir != "") 1094 llvm::sys::path::append(P, ClangResourceDir); 1095 else 1096 llvm::sys::path::append(P, "..", Twine("lib") + CLANG_LIBDIR_SUFFIX, 1097 "clang", CLANG_VERSION_STRING); 1098 1099 return P.str(); 1100 } 1101 1102 static void ParseHeaderSearchArgs(HeaderSearchOptions &Opts, ArgList &Args) { 1103 using namespace options; 1104 Opts.Sysroot = Args.getLastArgValue(OPT_isysroot, "/"); 1105 Opts.Verbose = Args.hasArg(OPT_v); 1106 Opts.UseBuiltinIncludes = !Args.hasArg(OPT_nobuiltininc); 1107 Opts.UseStandardSystemIncludes = !Args.hasArg(OPT_nostdsysteminc); 1108 Opts.UseStandardCXXIncludes = !Args.hasArg(OPT_nostdincxx); 1109 if (const Arg *A = Args.getLastArg(OPT_stdlib_EQ)) 1110 Opts.UseLibcxx = (strcmp(A->getValue(), "libc++") == 0); 1111 Opts.ResourceDir = Args.getLastArgValue(OPT_resource_dir); 1112 Opts.ModuleCachePath = Args.getLastArgValue(OPT_fmodules_cache_path); 1113 Opts.ModuleUserBuildPath = Args.getLastArgValue(OPT_fmodules_user_build_path); 1114 Opts.DisableModuleHash = Args.hasArg(OPT_fdisable_module_hash); 1115 Opts.ImplicitModuleMaps = Args.hasArg(OPT_fimplicit_module_maps); 1116 Opts.ModuleMapFileHomeIsCwd = Args.hasArg(OPT_fmodule_map_file_home_is_cwd); 1117 Opts.ModuleCachePruneInterval = 1118 getLastArgIntValue(Args, OPT_fmodules_prune_interval, 7 * 24 * 60 * 60); 1119 Opts.ModuleCachePruneAfter = 1120 getLastArgIntValue(Args, OPT_fmodules_prune_after, 31 * 24 * 60 * 60); 1121 Opts.ModulesValidateOncePerBuildSession = 1122 Args.hasArg(OPT_fmodules_validate_once_per_build_session); 1123 Opts.BuildSessionTimestamp = 1124 getLastArgUInt64Value(Args, OPT_fbuild_session_timestamp, 0); 1125 Opts.ModulesValidateSystemHeaders = 1126 Args.hasArg(OPT_fmodules_validate_system_headers); 1127 if (const Arg *A = Args.getLastArg(OPT_fmodule_format_EQ)) 1128 Opts.ModuleFormat = A->getValue(); 1129 1130 for (const Arg *A : Args.filtered(OPT_fmodules_ignore_macro)) { 1131 StringRef MacroDef = A->getValue(); 1132 Opts.ModulesIgnoreMacros.insert(MacroDef.split('=').first); 1133 } 1134 1135 // Add -I..., -F..., and -index-header-map options in order. 1136 bool IsIndexHeaderMap = false; 1137 for (const Arg *A : Args.filtered(OPT_I, OPT_F, OPT_index_header_map)) { 1138 if (A->getOption().matches(OPT_index_header_map)) { 1139 // -index-header-map applies to the next -I or -F. 1140 IsIndexHeaderMap = true; 1141 continue; 1142 } 1143 1144 frontend::IncludeDirGroup Group = 1145 IsIndexHeaderMap ? frontend::IndexHeaderMap : frontend::Angled; 1146 1147 Opts.AddPath(A->getValue(), Group, 1148 /*IsFramework=*/A->getOption().matches(OPT_F), true); 1149 IsIndexHeaderMap = false; 1150 } 1151 1152 // Add -iprefix/-iwithprefix/-iwithprefixbefore options. 1153 StringRef Prefix = ""; // FIXME: This isn't the correct default prefix. 1154 for (const Arg *A : 1155 Args.filtered(OPT_iprefix, OPT_iwithprefix, OPT_iwithprefixbefore)) { 1156 if (A->getOption().matches(OPT_iprefix)) 1157 Prefix = A->getValue(); 1158 else if (A->getOption().matches(OPT_iwithprefix)) 1159 Opts.AddPath(Prefix.str() + A->getValue(), frontend::After, false, true); 1160 else 1161 Opts.AddPath(Prefix.str() + A->getValue(), frontend::Angled, false, true); 1162 } 1163 1164 for (const Arg *A : Args.filtered(OPT_idirafter)) 1165 Opts.AddPath(A->getValue(), frontend::After, false, true); 1166 for (const Arg *A : Args.filtered(OPT_iquote)) 1167 Opts.AddPath(A->getValue(), frontend::Quoted, false, true); 1168 for (const Arg *A : Args.filtered(OPT_isystem, OPT_iwithsysroot)) 1169 Opts.AddPath(A->getValue(), frontend::System, false, 1170 !A->getOption().matches(OPT_iwithsysroot)); 1171 for (const Arg *A : Args.filtered(OPT_iframework)) 1172 Opts.AddPath(A->getValue(), frontend::System, true, true); 1173 1174 // Add the paths for the various language specific isystem flags. 1175 for (const Arg *A : Args.filtered(OPT_c_isystem)) 1176 Opts.AddPath(A->getValue(), frontend::CSystem, false, true); 1177 for (const Arg *A : Args.filtered(OPT_cxx_isystem)) 1178 Opts.AddPath(A->getValue(), frontend::CXXSystem, false, true); 1179 for (const Arg *A : Args.filtered(OPT_objc_isystem)) 1180 Opts.AddPath(A->getValue(), frontend::ObjCSystem, false,true); 1181 for (const Arg *A : Args.filtered(OPT_objcxx_isystem)) 1182 Opts.AddPath(A->getValue(), frontend::ObjCXXSystem, false, true); 1183 1184 // Add the internal paths from a driver that detects standard include paths. 1185 for (const Arg *A : 1186 Args.filtered(OPT_internal_isystem, OPT_internal_externc_isystem)) { 1187 frontend::IncludeDirGroup Group = frontend::System; 1188 if (A->getOption().matches(OPT_internal_externc_isystem)) 1189 Group = frontend::ExternCSystem; 1190 Opts.AddPath(A->getValue(), Group, false, true); 1191 } 1192 1193 // Add the path prefixes which are implicitly treated as being system headers. 1194 for (const Arg *A : 1195 Args.filtered(OPT_system_header_prefix, OPT_no_system_header_prefix)) 1196 Opts.AddSystemHeaderPrefix( 1197 A->getValue(), A->getOption().matches(OPT_system_header_prefix)); 1198 1199 for (const Arg *A : Args.filtered(OPT_ivfsoverlay)) 1200 Opts.AddVFSOverlayFile(A->getValue()); 1201 } 1202 1203 void CompilerInvocation::setLangDefaults(LangOptions &Opts, InputKind IK, 1204 LangStandard::Kind LangStd) { 1205 // Set some properties which depend solely on the input kind; it would be nice 1206 // to move these to the language standard, and have the driver resolve the 1207 // input kind + language standard. 1208 if (IK == IK_Asm) { 1209 Opts.AsmPreprocessor = 1; 1210 } else if (IK == IK_ObjC || 1211 IK == IK_ObjCXX || 1212 IK == IK_PreprocessedObjC || 1213 IK == IK_PreprocessedObjCXX) { 1214 Opts.ObjC1 = Opts.ObjC2 = 1; 1215 } 1216 1217 if (LangStd == LangStandard::lang_unspecified) { 1218 // Based on the base language, pick one. 1219 switch (IK) { 1220 case IK_None: 1221 case IK_AST: 1222 case IK_LLVM_IR: 1223 llvm_unreachable("Invalid input kind!"); 1224 case IK_OpenCL: 1225 LangStd = LangStandard::lang_opencl; 1226 break; 1227 case IK_CUDA: 1228 case IK_PreprocessedCuda: 1229 LangStd = LangStandard::lang_cuda; 1230 break; 1231 case IK_Asm: 1232 case IK_C: 1233 case IK_PreprocessedC: 1234 case IK_ObjC: 1235 case IK_PreprocessedObjC: 1236 LangStd = LangStandard::lang_gnu11; 1237 break; 1238 case IK_CXX: 1239 case IK_PreprocessedCXX: 1240 case IK_ObjCXX: 1241 case IK_PreprocessedObjCXX: 1242 LangStd = LangStandard::lang_gnucxx98; 1243 break; 1244 } 1245 } 1246 1247 const LangStandard &Std = LangStandard::getLangStandardForKind(LangStd); 1248 Opts.LineComment = Std.hasLineComments(); 1249 Opts.C99 = Std.isC99(); 1250 Opts.C11 = Std.isC11(); 1251 Opts.CPlusPlus = Std.isCPlusPlus(); 1252 Opts.CPlusPlus11 = Std.isCPlusPlus11(); 1253 Opts.CPlusPlus14 = Std.isCPlusPlus14(); 1254 Opts.CPlusPlus1z = Std.isCPlusPlus1z(); 1255 Opts.Digraphs = Std.hasDigraphs(); 1256 Opts.GNUMode = Std.isGNUMode(); 1257 Opts.GNUInline = Std.isC89(); 1258 Opts.HexFloats = Std.hasHexFloats(); 1259 Opts.ImplicitInt = Std.hasImplicitInt(); 1260 1261 // Set OpenCL Version. 1262 Opts.OpenCL = LangStd == LangStandard::lang_opencl || IK == IK_OpenCL; 1263 if (LangStd == LangStandard::lang_opencl) 1264 Opts.OpenCLVersion = 100; 1265 else if (LangStd == LangStandard::lang_opencl11) 1266 Opts.OpenCLVersion = 110; 1267 else if (LangStd == LangStandard::lang_opencl12) 1268 Opts.OpenCLVersion = 120; 1269 else if (LangStd == LangStandard::lang_opencl20) 1270 Opts.OpenCLVersion = 200; 1271 1272 // OpenCL has some additional defaults. 1273 if (Opts.OpenCL) { 1274 Opts.AltiVec = 0; 1275 Opts.ZVector = 0; 1276 Opts.CXXOperatorNames = 1; 1277 Opts.LaxVectorConversions = 0; 1278 Opts.DefaultFPContract = 1; 1279 Opts.NativeHalfType = 1; 1280 } 1281 1282 Opts.CUDA = IK == IK_CUDA || IK == IK_PreprocessedCuda || 1283 LangStd == LangStandard::lang_cuda; 1284 1285 // OpenCL and C++ both have bool, true, false keywords. 1286 Opts.Bool = Opts.OpenCL || Opts.CPlusPlus; 1287 1288 // OpenCL has half keyword 1289 Opts.Half = Opts.OpenCL; 1290 1291 // C++ has wchar_t keyword. 1292 Opts.WChar = Opts.CPlusPlus; 1293 1294 Opts.GNUKeywords = Opts.GNUMode; 1295 Opts.CXXOperatorNames = Opts.CPlusPlus; 1296 1297 Opts.DollarIdents = !Opts.AsmPreprocessor; 1298 } 1299 1300 /// Attempt to parse a visibility value out of the given argument. 1301 static Visibility parseVisibility(Arg *arg, ArgList &args, 1302 DiagnosticsEngine &diags) { 1303 StringRef value = arg->getValue(); 1304 if (value == "default") { 1305 return DefaultVisibility; 1306 } else if (value == "hidden" || value == "internal") { 1307 return HiddenVisibility; 1308 } else if (value == "protected") { 1309 // FIXME: diagnose if target does not support protected visibility 1310 return ProtectedVisibility; 1311 } 1312 1313 diags.Report(diag::err_drv_invalid_value) 1314 << arg->getAsString(args) << value; 1315 return DefaultVisibility; 1316 } 1317 1318 static void ParseLangArgs(LangOptions &Opts, ArgList &Args, InputKind IK, 1319 DiagnosticsEngine &Diags) { 1320 // FIXME: Cleanup per-file based stuff. 1321 LangStandard::Kind LangStd = LangStandard::lang_unspecified; 1322 if (const Arg *A = Args.getLastArg(OPT_std_EQ)) { 1323 LangStd = llvm::StringSwitch<LangStandard::Kind>(A->getValue()) 1324 #define LANGSTANDARD(id, name, desc, features) \ 1325 .Case(name, LangStandard::lang_##id) 1326 #include "clang/Frontend/LangStandards.def" 1327 .Default(LangStandard::lang_unspecified); 1328 if (LangStd == LangStandard::lang_unspecified) 1329 Diags.Report(diag::err_drv_invalid_value) 1330 << A->getAsString(Args) << A->getValue(); 1331 else { 1332 // Valid standard, check to make sure language and standard are 1333 // compatible. 1334 const LangStandard &Std = LangStandard::getLangStandardForKind(LangStd); 1335 switch (IK) { 1336 case IK_C: 1337 case IK_ObjC: 1338 case IK_PreprocessedC: 1339 case IK_PreprocessedObjC: 1340 if (!(Std.isC89() || Std.isC99())) 1341 Diags.Report(diag::err_drv_argument_not_allowed_with) 1342 << A->getAsString(Args) << "C/ObjC"; 1343 break; 1344 case IK_CXX: 1345 case IK_ObjCXX: 1346 case IK_PreprocessedCXX: 1347 case IK_PreprocessedObjCXX: 1348 if (!Std.isCPlusPlus()) 1349 Diags.Report(diag::err_drv_argument_not_allowed_with) 1350 << A->getAsString(Args) << "C++/ObjC++"; 1351 break; 1352 case IK_OpenCL: 1353 if (!Std.isC99()) 1354 Diags.Report(diag::err_drv_argument_not_allowed_with) 1355 << A->getAsString(Args) << "OpenCL"; 1356 break; 1357 case IK_CUDA: 1358 case IK_PreprocessedCuda: 1359 if (!Std.isCPlusPlus()) 1360 Diags.Report(diag::err_drv_argument_not_allowed_with) 1361 << A->getAsString(Args) << "CUDA"; 1362 break; 1363 default: 1364 break; 1365 } 1366 } 1367 } 1368 1369 // -cl-std only applies for OpenCL language standards. 1370 // Override the -std option in this case. 1371 if (const Arg *A = Args.getLastArg(OPT_cl_std_EQ)) { 1372 LangStandard::Kind OpenCLLangStd 1373 = llvm::StringSwitch<LangStandard::Kind>(A->getValue()) 1374 .Case("CL", LangStandard::lang_opencl) 1375 .Case("CL1.1", LangStandard::lang_opencl11) 1376 .Case("CL1.2", LangStandard::lang_opencl12) 1377 .Case("CL2.0", LangStandard::lang_opencl20) 1378 .Default(LangStandard::lang_unspecified); 1379 1380 if (OpenCLLangStd == LangStandard::lang_unspecified) { 1381 Diags.Report(diag::err_drv_invalid_value) 1382 << A->getAsString(Args) << A->getValue(); 1383 } 1384 else 1385 LangStd = OpenCLLangStd; 1386 } 1387 1388 CompilerInvocation::setLangDefaults(Opts, IK, LangStd); 1389 1390 // We abuse '-f[no-]gnu-keywords' to force overriding all GNU-extension 1391 // keywords. This behavior is provided by GCC's poorly named '-fasm' flag, 1392 // while a subset (the non-C++ GNU keywords) is provided by GCC's 1393 // '-fgnu-keywords'. Clang conflates the two for simplicity under the single 1394 // name, as it doesn't seem a useful distinction. 1395 Opts.GNUKeywords = Args.hasFlag(OPT_fgnu_keywords, OPT_fno_gnu_keywords, 1396 Opts.GNUKeywords); 1397 1398 if (Args.hasArg(OPT_fno_operator_names)) 1399 Opts.CXXOperatorNames = 0; 1400 1401 if (Args.hasArg(OPT_fcuda_is_device)) 1402 Opts.CUDAIsDevice = 1; 1403 1404 if (Args.hasArg(OPT_fcuda_allow_host_calls_from_host_device)) 1405 Opts.CUDAAllowHostCallsFromHostDevice = 1; 1406 1407 if (Args.hasArg(OPT_fcuda_disable_target_call_checks)) 1408 Opts.CUDADisableTargetCallChecks = 1; 1409 1410 if (Args.hasArg(OPT_fcuda_target_overloads)) 1411 Opts.CUDATargetOverloads = 1; 1412 1413 if (Opts.ObjC1) { 1414 if (Arg *arg = Args.getLastArg(OPT_fobjc_runtime_EQ)) { 1415 StringRef value = arg->getValue(); 1416 if (Opts.ObjCRuntime.tryParse(value)) 1417 Diags.Report(diag::err_drv_unknown_objc_runtime) << value; 1418 } 1419 1420 if (Args.hasArg(OPT_fobjc_gc_only)) 1421 Opts.setGC(LangOptions::GCOnly); 1422 else if (Args.hasArg(OPT_fobjc_gc)) 1423 Opts.setGC(LangOptions::HybridGC); 1424 else if (Args.hasArg(OPT_fobjc_arc)) { 1425 Opts.ObjCAutoRefCount = 1; 1426 if (!Opts.ObjCRuntime.allowsARC()) 1427 Diags.Report(diag::err_arc_unsupported_on_runtime); 1428 } 1429 1430 // ObjCWeakRuntime tracks whether the runtime supports __weak, not 1431 // whether the feature is actually enabled. This is predominantly 1432 // determined by -fobjc-runtime, but we allow it to be overridden 1433 // from the command line for testing purposes. 1434 if (Args.hasArg(OPT_fobjc_runtime_has_weak)) 1435 Opts.ObjCWeakRuntime = 1; 1436 else 1437 Opts.ObjCWeakRuntime = Opts.ObjCRuntime.allowsWeak(); 1438 1439 // ObjCWeak determines whether __weak is actually enabled. 1440 if (Opts.ObjCAutoRefCount) { 1441 Opts.ObjCWeak = Opts.ObjCWeakRuntime; 1442 } else if (Args.hasArg(OPT_fobjc_weak)) { 1443 if (Opts.getGC() != LangOptions::NonGC) { 1444 Diags.Report(diag::err_objc_weak_with_gc); 1445 } else if (Opts.ObjCWeakRuntime) { 1446 Opts.ObjCWeak = true; 1447 } else { 1448 Diags.Report(diag::err_objc_weak_unsupported); 1449 } 1450 } 1451 1452 if (Args.hasArg(OPT_fno_objc_infer_related_result_type)) 1453 Opts.ObjCInferRelatedResultType = 0; 1454 1455 if (Args.hasArg(OPT_fobjc_subscripting_legacy_runtime)) 1456 Opts.ObjCSubscriptingLegacyRuntime = 1457 (Opts.ObjCRuntime.getKind() == ObjCRuntime::FragileMacOSX); 1458 } 1459 1460 if (Args.hasArg(OPT_fgnu89_inline)) { 1461 if (Opts.CPlusPlus) 1462 Diags.Report(diag::err_drv_argument_not_allowed_with) << "-fgnu89-inline" 1463 << "C++/ObjC++"; 1464 else 1465 Opts.GNUInline = 1; 1466 } 1467 1468 if (Args.hasArg(OPT_fapple_kext)) { 1469 if (!Opts.CPlusPlus) 1470 Diags.Report(diag::warn_c_kext); 1471 else 1472 Opts.AppleKext = 1; 1473 } 1474 1475 if (Args.hasArg(OPT_print_ivar_layout)) 1476 Opts.ObjCGCBitmapPrint = 1; 1477 if (Args.hasArg(OPT_fno_constant_cfstrings)) 1478 Opts.NoConstantCFStrings = 1; 1479 1480 if (Args.hasArg(OPT_faltivec)) 1481 Opts.AltiVec = 1; 1482 1483 if (Args.hasArg(OPT_fzvector)) 1484 Opts.ZVector = 1; 1485 1486 if (Args.hasArg(OPT_pthread)) 1487 Opts.POSIXThreads = 1; 1488 1489 // The value-visibility mode defaults to "default". 1490 if (Arg *visOpt = Args.getLastArg(OPT_fvisibility)) { 1491 Opts.setValueVisibilityMode(parseVisibility(visOpt, Args, Diags)); 1492 } else { 1493 Opts.setValueVisibilityMode(DefaultVisibility); 1494 } 1495 1496 // The type-visibility mode defaults to the value-visibility mode. 1497 if (Arg *typeVisOpt = Args.getLastArg(OPT_ftype_visibility)) { 1498 Opts.setTypeVisibilityMode(parseVisibility(typeVisOpt, Args, Diags)); 1499 } else { 1500 Opts.setTypeVisibilityMode(Opts.getValueVisibilityMode()); 1501 } 1502 1503 if (Args.hasArg(OPT_fvisibility_inlines_hidden)) 1504 Opts.InlineVisibilityHidden = 1; 1505 1506 if (Args.hasArg(OPT_ftrapv)) { 1507 Opts.setSignedOverflowBehavior(LangOptions::SOB_Trapping); 1508 // Set the handler, if one is specified. 1509 Opts.OverflowHandler = 1510 Args.getLastArgValue(OPT_ftrapv_handler); 1511 } 1512 else if (Args.hasArg(OPT_fwrapv)) 1513 Opts.setSignedOverflowBehavior(LangOptions::SOB_Defined); 1514 1515 Opts.MSVCCompat = Args.hasArg(OPT_fms_compatibility); 1516 Opts.MicrosoftExt = Opts.MSVCCompat || Args.hasArg(OPT_fms_extensions); 1517 Opts.AsmBlocks = Args.hasArg(OPT_fasm_blocks) || Opts.MicrosoftExt; 1518 Opts.MSCompatibilityVersion = 0; 1519 if (const Arg *A = Args.getLastArg(OPT_fms_compatibility_version)) { 1520 VersionTuple VT; 1521 if (VT.tryParse(A->getValue())) 1522 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) 1523 << A->getValue(); 1524 Opts.MSCompatibilityVersion = VT.getMajor() * 10000000 + 1525 VT.getMinor().getValueOr(0) * 100000 + 1526 VT.getSubminor().getValueOr(0); 1527 } 1528 1529 // Mimicing gcc's behavior, trigraphs are only enabled if -trigraphs 1530 // is specified, or -std is set to a conforming mode. 1531 // Trigraphs are disabled by default in c++1z onwards. 1532 Opts.Trigraphs = !Opts.GNUMode && !Opts.MSVCCompat && !Opts.CPlusPlus1z; 1533 Opts.Trigraphs = 1534 Args.hasFlag(OPT_ftrigraphs, OPT_fno_trigraphs, Opts.Trigraphs); 1535 1536 Opts.DollarIdents = Args.hasFlag(OPT_fdollars_in_identifiers, 1537 OPT_fno_dollars_in_identifiers, 1538 Opts.DollarIdents); 1539 Opts.PascalStrings = Args.hasArg(OPT_fpascal_strings); 1540 Opts.VtorDispMode = getLastArgIntValue(Args, OPT_vtordisp_mode_EQ, 1, Diags); 1541 Opts.Borland = Args.hasArg(OPT_fborland_extensions); 1542 Opts.WritableStrings = Args.hasArg(OPT_fwritable_strings); 1543 Opts.ConstStrings = Args.hasFlag(OPT_fconst_strings, OPT_fno_const_strings, 1544 Opts.ConstStrings); 1545 if (Args.hasArg(OPT_fno_lax_vector_conversions)) 1546 Opts.LaxVectorConversions = 0; 1547 if (Args.hasArg(OPT_fno_threadsafe_statics)) 1548 Opts.ThreadsafeStatics = 0; 1549 Opts.Exceptions = Args.hasArg(OPT_fexceptions); 1550 Opts.ObjCExceptions = Args.hasArg(OPT_fobjc_exceptions); 1551 Opts.CXXExceptions = Args.hasArg(OPT_fcxx_exceptions); 1552 Opts.SjLjExceptions = Args.hasArg(OPT_fsjlj_exceptions); 1553 Opts.TraditionalCPP = Args.hasArg(OPT_traditional_cpp); 1554 1555 Opts.RTTI = !Args.hasArg(OPT_fno_rtti); 1556 Opts.RTTIData = Opts.RTTI && !Args.hasArg(OPT_fno_rtti_data); 1557 Opts.Blocks = Args.hasArg(OPT_fblocks); 1558 Opts.BlocksRuntimeOptional = Args.hasArg(OPT_fblocks_runtime_optional); 1559 Opts.Coroutines = Args.hasArg(OPT_fcoroutines); 1560 Opts.Modules = Args.hasArg(OPT_fmodules); 1561 Opts.ModulesStrictDeclUse = Args.hasArg(OPT_fmodules_strict_decluse); 1562 Opts.ModulesDeclUse = 1563 Args.hasArg(OPT_fmodules_decluse) || Opts.ModulesStrictDeclUse; 1564 Opts.ModulesLocalVisibility = 1565 Args.hasArg(OPT_fmodules_local_submodule_visibility); 1566 Opts.ModulesHideInternalLinkage = 1567 !Args.hasArg(OPT_fno_modules_hide_internal_linkage); 1568 Opts.ModulesSearchAll = Opts.Modules && 1569 !Args.hasArg(OPT_fno_modules_search_all) && 1570 Args.hasArg(OPT_fmodules_search_all); 1571 Opts.ModulesErrorRecovery = !Args.hasArg(OPT_fno_modules_error_recovery); 1572 Opts.ImplicitModules = !Args.hasArg(OPT_fno_implicit_modules); 1573 Opts.CharIsSigned = Opts.OpenCL || !Args.hasArg(OPT_fno_signed_char); 1574 Opts.WChar = Opts.CPlusPlus && !Args.hasArg(OPT_fno_wchar); 1575 Opts.ShortWChar = Args.hasFlag(OPT_fshort_wchar, OPT_fno_short_wchar, false); 1576 Opts.ShortEnums = Args.hasArg(OPT_fshort_enums); 1577 Opts.Freestanding = Args.hasArg(OPT_ffreestanding); 1578 Opts.NoBuiltin = Args.hasArg(OPT_fno_builtin) || Opts.Freestanding; 1579 Opts.NoMathBuiltin = Args.hasArg(OPT_fno_math_builtin); 1580 Opts.AssumeSaneOperatorNew = !Args.hasArg(OPT_fno_assume_sane_operator_new); 1581 Opts.SizedDeallocation = Args.hasArg(OPT_fsized_deallocation); 1582 Opts.ConceptsTS = Args.hasArg(OPT_fconcepts_ts); 1583 Opts.HeinousExtensions = Args.hasArg(OPT_fheinous_gnu_extensions); 1584 Opts.AccessControl = !Args.hasArg(OPT_fno_access_control); 1585 Opts.ElideConstructors = !Args.hasArg(OPT_fno_elide_constructors); 1586 Opts.MathErrno = !Opts.OpenCL && Args.hasArg(OPT_fmath_errno); 1587 Opts.InstantiationDepth = 1588 getLastArgIntValue(Args, OPT_ftemplate_depth, 256, Diags); 1589 Opts.ArrowDepth = 1590 getLastArgIntValue(Args, OPT_foperator_arrow_depth, 256, Diags); 1591 Opts.ConstexprCallDepth = 1592 getLastArgIntValue(Args, OPT_fconstexpr_depth, 512, Diags); 1593 Opts.ConstexprStepLimit = 1594 getLastArgIntValue(Args, OPT_fconstexpr_steps, 1048576, Diags); 1595 Opts.BracketDepth = getLastArgIntValue(Args, OPT_fbracket_depth, 256, Diags); 1596 Opts.DelayedTemplateParsing = Args.hasArg(OPT_fdelayed_template_parsing); 1597 Opts.NumLargeByValueCopy = 1598 getLastArgIntValue(Args, OPT_Wlarge_by_value_copy_EQ, 0, Diags); 1599 Opts.MSBitfields = Args.hasArg(OPT_mms_bitfields); 1600 Opts.ObjCConstantStringClass = 1601 Args.getLastArgValue(OPT_fconstant_string_class); 1602 Opts.ObjCDefaultSynthProperties = 1603 !Args.hasArg(OPT_disable_objc_default_synthesize_properties); 1604 Opts.EncodeExtendedBlockSig = 1605 Args.hasArg(OPT_fencode_extended_block_signature); 1606 Opts.EmitAllDecls = Args.hasArg(OPT_femit_all_decls); 1607 Opts.PackStruct = getLastArgIntValue(Args, OPT_fpack_struct_EQ, 0, Diags); 1608 Opts.MaxTypeAlign = getLastArgIntValue(Args, OPT_fmax_type_align_EQ, 0, Diags); 1609 Opts.PICLevel = getLastArgIntValue(Args, OPT_pic_level, 0, Diags); 1610 Opts.PIELevel = getLastArgIntValue(Args, OPT_pie_level, 0, Diags); 1611 Opts.Static = Args.hasArg(OPT_static_define); 1612 Opts.DumpRecordLayoutsSimple = Args.hasArg(OPT_fdump_record_layouts_simple); 1613 Opts.DumpRecordLayouts = Opts.DumpRecordLayoutsSimple 1614 || Args.hasArg(OPT_fdump_record_layouts); 1615 Opts.DumpVTableLayouts = Args.hasArg(OPT_fdump_vtable_layouts); 1616 Opts.SpellChecking = !Args.hasArg(OPT_fno_spell_checking); 1617 Opts.NoBitFieldTypeAlign = Args.hasArg(OPT_fno_bitfield_type_align); 1618 Opts.SinglePrecisionConstants = Args.hasArg(OPT_cl_single_precision_constant); 1619 Opts.FastRelaxedMath = Args.hasArg(OPT_cl_fast_relaxed_math); 1620 Opts.MRTD = Args.hasArg(OPT_mrtd); 1621 Opts.HexagonQdsp6Compat = Args.hasArg(OPT_mqdsp6_compat); 1622 Opts.FakeAddressSpaceMap = Args.hasArg(OPT_ffake_address_space_map); 1623 Opts.ParseUnknownAnytype = Args.hasArg(OPT_funknown_anytype); 1624 Opts.DebuggerSupport = Args.hasArg(OPT_fdebugger_support); 1625 Opts.DebuggerCastResultToId = Args.hasArg(OPT_fdebugger_cast_result_to_id); 1626 Opts.DebuggerObjCLiteral = Args.hasArg(OPT_fdebugger_objc_literal); 1627 Opts.ApplePragmaPack = Args.hasArg(OPT_fapple_pragma_pack); 1628 Opts.CurrentModule = Args.getLastArgValue(OPT_fmodule_name); 1629 Opts.AppExt = Args.hasArg(OPT_fapplication_extension); 1630 Opts.ImplementationOfModule = 1631 Args.getLastArgValue(OPT_fmodule_implementation_of); 1632 Opts.ModuleFeatures = Args.getAllArgValues(OPT_fmodule_feature); 1633 std::sort(Opts.ModuleFeatures.begin(), Opts.ModuleFeatures.end()); 1634 Opts.NativeHalfType |= Args.hasArg(OPT_fnative_half_type); 1635 Opts.HalfArgsAndReturns = Args.hasArg(OPT_fallow_half_arguments_and_returns); 1636 Opts.GNUAsm = !Args.hasArg(OPT_fno_gnu_inline_asm); 1637 1638 // __declspec is enabled by default for the PS4 by the driver, and also 1639 // enabled for Microsoft Extensions or Borland Extensions, here. 1640 // 1641 // FIXME: __declspec is also currently enabled for CUDA, but isn't really a 1642 // CUDA extension, however it is required for supporting cuda_builtin_vars.h, 1643 // which uses __declspec(property). Once that has been rewritten in terms of 1644 // something more generic, remove the Opts.CUDA term here. 1645 Opts.DeclSpecKeyword = 1646 Args.hasFlag(OPT_fdeclspec, OPT_fno_declspec, 1647 (Opts.MicrosoftExt || Opts.Borland || Opts.CUDA)); 1648 1649 if (!Opts.CurrentModule.empty() && !Opts.ImplementationOfModule.empty() && 1650 Opts.CurrentModule != Opts.ImplementationOfModule) { 1651 Diags.Report(diag::err_conflicting_module_names) 1652 << Opts.CurrentModule << Opts.ImplementationOfModule; 1653 } 1654 1655 // For now, we only support local submodule visibility in C++ (because we 1656 // heavily depend on the ODR for merging redefinitions). 1657 if (Opts.ModulesLocalVisibility && !Opts.CPlusPlus) 1658 Diags.Report(diag::err_drv_argument_not_allowed_with) 1659 << "-fmodules-local-submodule-visibility" << "C"; 1660 1661 if (Arg *A = Args.getLastArg(OPT_faddress_space_map_mangling_EQ)) { 1662 switch (llvm::StringSwitch<unsigned>(A->getValue()) 1663 .Case("target", LangOptions::ASMM_Target) 1664 .Case("no", LangOptions::ASMM_Off) 1665 .Case("yes", LangOptions::ASMM_On) 1666 .Default(255)) { 1667 default: 1668 Diags.Report(diag::err_drv_invalid_value) 1669 << "-faddress-space-map-mangling=" << A->getValue(); 1670 break; 1671 case LangOptions::ASMM_Target: 1672 Opts.setAddressSpaceMapMangling(LangOptions::ASMM_Target); 1673 break; 1674 case LangOptions::ASMM_On: 1675 Opts.setAddressSpaceMapMangling(LangOptions::ASMM_On); 1676 break; 1677 case LangOptions::ASMM_Off: 1678 Opts.setAddressSpaceMapMangling(LangOptions::ASMM_Off); 1679 break; 1680 } 1681 } 1682 1683 if (Arg *A = Args.getLastArg(OPT_fms_memptr_rep_EQ)) { 1684 LangOptions::PragmaMSPointersToMembersKind InheritanceModel = 1685 llvm::StringSwitch<LangOptions::PragmaMSPointersToMembersKind>( 1686 A->getValue()) 1687 .Case("single", 1688 LangOptions::PPTMK_FullGeneralitySingleInheritance) 1689 .Case("multiple", 1690 LangOptions::PPTMK_FullGeneralityMultipleInheritance) 1691 .Case("virtual", 1692 LangOptions::PPTMK_FullGeneralityVirtualInheritance) 1693 .Default(LangOptions::PPTMK_BestCase); 1694 if (InheritanceModel == LangOptions::PPTMK_BestCase) 1695 Diags.Report(diag::err_drv_invalid_value) 1696 << "-fms-memptr-rep=" << A->getValue(); 1697 1698 Opts.setMSPointerToMemberRepresentationMethod(InheritanceModel); 1699 } 1700 1701 // Check if -fopenmp is specified. 1702 Opts.OpenMP = Args.hasArg(options::OPT_fopenmp); 1703 Opts.OpenMPUseTLS = 1704 Opts.OpenMP && !Args.hasArg(options::OPT_fnoopenmp_use_tls); 1705 1706 // Record whether the __DEPRECATED define was requested. 1707 Opts.Deprecated = Args.hasFlag(OPT_fdeprecated_macro, 1708 OPT_fno_deprecated_macro, 1709 Opts.Deprecated); 1710 1711 // FIXME: Eliminate this dependency. 1712 unsigned Opt = getOptimizationLevel(Args, IK, Diags), 1713 OptSize = getOptimizationLevelSize(Args); 1714 Opts.Optimize = Opt != 0; 1715 Opts.OptimizeSize = OptSize != 0; 1716 1717 // This is the __NO_INLINE__ define, which just depends on things like the 1718 // optimization level and -fno-inline, not actually whether the backend has 1719 // inlining enabled. 1720 Opts.NoInlineDefine = !Opt || Args.hasArg(OPT_fno_inline); 1721 1722 Opts.FastMath = Args.hasArg(OPT_ffast_math) || 1723 Args.hasArg(OPT_cl_fast_relaxed_math); 1724 Opts.FiniteMathOnly = Args.hasArg(OPT_ffinite_math_only) || 1725 Args.hasArg(OPT_cl_finite_math_only) || 1726 Args.hasArg(OPT_cl_fast_relaxed_math); 1727 Opts.UnsafeFPMath = Args.hasArg(OPT_menable_unsafe_fp_math) || 1728 Args.hasArg(OPT_cl_unsafe_math_optimizations) || 1729 Args.hasArg(OPT_cl_fast_relaxed_math); 1730 1731 Opts.RetainCommentsFromSystemHeaders = 1732 Args.hasArg(OPT_fretain_comments_from_system_headers); 1733 1734 unsigned SSP = getLastArgIntValue(Args, OPT_stack_protector, 0, Diags); 1735 switch (SSP) { 1736 default: 1737 Diags.Report(diag::err_drv_invalid_value) 1738 << Args.getLastArg(OPT_stack_protector)->getAsString(Args) << SSP; 1739 break; 1740 case 0: Opts.setStackProtector(LangOptions::SSPOff); break; 1741 case 1: Opts.setStackProtector(LangOptions::SSPOn); break; 1742 case 2: Opts.setStackProtector(LangOptions::SSPStrong); break; 1743 case 3: Opts.setStackProtector(LangOptions::SSPReq); break; 1744 } 1745 1746 // Parse -fsanitize= arguments. 1747 parseSanitizerKinds("-fsanitize=", Args.getAllArgValues(OPT_fsanitize_EQ), 1748 Diags, Opts.Sanitize); 1749 // -fsanitize-address-field-padding=N has to be a LangOpt, parse it here. 1750 Opts.SanitizeAddressFieldPadding = 1751 getLastArgIntValue(Args, OPT_fsanitize_address_field_padding, 0, Diags); 1752 Opts.SanitizerBlacklistFiles = Args.getAllArgValues(OPT_fsanitize_blacklist); 1753 } 1754 1755 static void ParsePreprocessorArgs(PreprocessorOptions &Opts, ArgList &Args, 1756 FileManager &FileMgr, 1757 DiagnosticsEngine &Diags) { 1758 using namespace options; 1759 Opts.ImplicitPCHInclude = Args.getLastArgValue(OPT_include_pch); 1760 Opts.ImplicitPTHInclude = Args.getLastArgValue(OPT_include_pth); 1761 if (const Arg *A = Args.getLastArg(OPT_token_cache)) 1762 Opts.TokenCache = A->getValue(); 1763 else 1764 Opts.TokenCache = Opts.ImplicitPTHInclude; 1765 Opts.UsePredefines = !Args.hasArg(OPT_undef); 1766 Opts.DetailedRecord = Args.hasArg(OPT_detailed_preprocessing_record); 1767 Opts.DisablePCHValidation = Args.hasArg(OPT_fno_validate_pch); 1768 1769 Opts.DumpDeserializedPCHDecls = Args.hasArg(OPT_dump_deserialized_pch_decls); 1770 for (const Arg *A : Args.filtered(OPT_error_on_deserialized_pch_decl)) 1771 Opts.DeserializedPCHDeclsToErrorOn.insert(A->getValue()); 1772 1773 if (const Arg *A = Args.getLastArg(OPT_preamble_bytes_EQ)) { 1774 StringRef Value(A->getValue()); 1775 size_t Comma = Value.find(','); 1776 unsigned Bytes = 0; 1777 unsigned EndOfLine = 0; 1778 1779 if (Comma == StringRef::npos || 1780 Value.substr(0, Comma).getAsInteger(10, Bytes) || 1781 Value.substr(Comma + 1).getAsInteger(10, EndOfLine)) 1782 Diags.Report(diag::err_drv_preamble_format); 1783 else { 1784 Opts.PrecompiledPreambleBytes.first = Bytes; 1785 Opts.PrecompiledPreambleBytes.second = (EndOfLine != 0); 1786 } 1787 } 1788 1789 // Add macros from the command line. 1790 for (const Arg *A : Args.filtered(OPT_D, OPT_U)) { 1791 if (A->getOption().matches(OPT_D)) 1792 Opts.addMacroDef(A->getValue()); 1793 else 1794 Opts.addMacroUndef(A->getValue()); 1795 } 1796 1797 Opts.MacroIncludes = Args.getAllArgValues(OPT_imacros); 1798 1799 // Add the ordered list of -includes. 1800 for (const Arg *A : Args.filtered(OPT_include)) 1801 Opts.Includes.emplace_back(A->getValue()); 1802 1803 for (const Arg *A : Args.filtered(OPT_chain_include)) 1804 Opts.ChainedIncludes.emplace_back(A->getValue()); 1805 1806 // Include 'altivec.h' if -faltivec option present 1807 if (Args.hasArg(OPT_faltivec)) 1808 Opts.Includes.emplace_back("altivec.h"); 1809 1810 for (const Arg *A : Args.filtered(OPT_remap_file)) { 1811 std::pair<StringRef, StringRef> Split = StringRef(A->getValue()).split(';'); 1812 1813 if (Split.second.empty()) { 1814 Diags.Report(diag::err_drv_invalid_remap_file) << A->getAsString(Args); 1815 continue; 1816 } 1817 1818 Opts.addRemappedFile(Split.first, Split.second); 1819 } 1820 1821 if (Arg *A = Args.getLastArg(OPT_fobjc_arc_cxxlib_EQ)) { 1822 StringRef Name = A->getValue(); 1823 unsigned Library = llvm::StringSwitch<unsigned>(Name) 1824 .Case("libc++", ARCXX_libcxx) 1825 .Case("libstdc++", ARCXX_libstdcxx) 1826 .Case("none", ARCXX_nolib) 1827 .Default(~0U); 1828 if (Library == ~0U) 1829 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Name; 1830 else 1831 Opts.ObjCXXARCStandardLibrary = (ObjCXXARCStandardLibraryKind)Library; 1832 } 1833 } 1834 1835 static void ParsePreprocessorOutputArgs(PreprocessorOutputOptions &Opts, 1836 ArgList &Args, 1837 frontend::ActionKind Action) { 1838 using namespace options; 1839 1840 switch (Action) { 1841 case frontend::ASTDeclList: 1842 case frontend::ASTDump: 1843 case frontend::ASTPrint: 1844 case frontend::ASTView: 1845 case frontend::EmitAssembly: 1846 case frontend::EmitBC: 1847 case frontend::EmitHTML: 1848 case frontend::EmitLLVM: 1849 case frontend::EmitLLVMOnly: 1850 case frontend::EmitCodeGenOnly: 1851 case frontend::EmitObj: 1852 case frontend::FixIt: 1853 case frontend::GenerateModule: 1854 case frontend::GeneratePCH: 1855 case frontend::GeneratePTH: 1856 case frontend::ParseSyntaxOnly: 1857 case frontend::ModuleFileInfo: 1858 case frontend::VerifyPCH: 1859 case frontend::PluginAction: 1860 case frontend::PrintDeclContext: 1861 case frontend::RewriteObjC: 1862 case frontend::RewriteTest: 1863 case frontend::RunAnalysis: 1864 case frontend::MigrateSource: 1865 Opts.ShowCPP = 0; 1866 break; 1867 1868 case frontend::DumpRawTokens: 1869 case frontend::DumpTokens: 1870 case frontend::InitOnly: 1871 case frontend::PrintPreamble: 1872 case frontend::PrintPreprocessedInput: 1873 case frontend::RewriteMacros: 1874 case frontend::RunPreprocessorOnly: 1875 Opts.ShowCPP = !Args.hasArg(OPT_dM); 1876 break; 1877 } 1878 1879 Opts.ShowComments = Args.hasArg(OPT_C); 1880 Opts.ShowLineMarkers = !Args.hasArg(OPT_P); 1881 Opts.ShowMacroComments = Args.hasArg(OPT_CC); 1882 Opts.ShowMacros = Args.hasArg(OPT_dM) || Args.hasArg(OPT_dD); 1883 Opts.RewriteIncludes = Args.hasArg(OPT_frewrite_includes); 1884 Opts.UseLineDirectives = Args.hasArg(OPT_fuse_line_directives); 1885 } 1886 1887 static void ParseTargetArgs(TargetOptions &Opts, ArgList &Args) { 1888 using namespace options; 1889 Opts.ABI = Args.getLastArgValue(OPT_target_abi); 1890 Opts.CPU = Args.getLastArgValue(OPT_target_cpu); 1891 Opts.FPMath = Args.getLastArgValue(OPT_mfpmath); 1892 Opts.FeaturesAsWritten = Args.getAllArgValues(OPT_target_feature); 1893 Opts.LinkerVersion = Args.getLastArgValue(OPT_target_linker_version); 1894 Opts.Triple = llvm::Triple::normalize(Args.getLastArgValue(OPT_triple)); 1895 Opts.Reciprocals = Args.getAllArgValues(OPT_mrecip_EQ); 1896 // Use the default target triple if unspecified. 1897 if (Opts.Triple.empty()) 1898 Opts.Triple = llvm::sys::getDefaultTargetTriple(); 1899 } 1900 1901 bool CompilerInvocation::CreateFromArgs(CompilerInvocation &Res, 1902 const char *const *ArgBegin, 1903 const char *const *ArgEnd, 1904 DiagnosticsEngine &Diags) { 1905 bool Success = true; 1906 1907 // Parse the arguments. 1908 std::unique_ptr<OptTable> Opts(createDriverOptTable()); 1909 const unsigned IncludedFlagsBitmask = options::CC1Option; 1910 unsigned MissingArgIndex, MissingArgCount; 1911 InputArgList Args = 1912 Opts->ParseArgs(llvm::makeArrayRef(ArgBegin, ArgEnd), MissingArgIndex, 1913 MissingArgCount, IncludedFlagsBitmask); 1914 1915 // Check for missing argument error. 1916 if (MissingArgCount) { 1917 Diags.Report(diag::err_drv_missing_argument) 1918 << Args.getArgString(MissingArgIndex) << MissingArgCount; 1919 Success = false; 1920 } 1921 1922 // Issue errors on unknown arguments. 1923 for (const Arg *A : Args.filtered(OPT_UNKNOWN)) { 1924 Diags.Report(diag::err_drv_unknown_argument) << A->getAsString(Args); 1925 Success = false; 1926 } 1927 1928 Success &= ParseAnalyzerArgs(*Res.getAnalyzerOpts(), Args, Diags); 1929 Success &= ParseMigratorArgs(Res.getMigratorOpts(), Args); 1930 ParseDependencyOutputArgs(Res.getDependencyOutputOpts(), Args); 1931 Success &= ParseDiagnosticArgs(Res.getDiagnosticOpts(), Args, &Diags); 1932 ParseCommentArgs(Res.getLangOpts()->CommentOpts, Args); 1933 ParseFileSystemArgs(Res.getFileSystemOpts(), Args); 1934 // FIXME: We shouldn't have to pass the DashX option around here 1935 InputKind DashX = ParseFrontendArgs(Res.getFrontendOpts(), Args, Diags); 1936 ParseTargetArgs(Res.getTargetOpts(), Args); 1937 Success &= ParseCodeGenArgs(Res.getCodeGenOpts(), Args, DashX, Diags, 1938 Res.getTargetOpts()); 1939 ParseHeaderSearchArgs(Res.getHeaderSearchOpts(), Args); 1940 if (DashX == IK_AST || DashX == IK_LLVM_IR) { 1941 // ObjCAAutoRefCount and Sanitize LangOpts are used to setup the 1942 // PassManager in BackendUtil.cpp. They need to be initializd no matter 1943 // what the input type is. 1944 if (Args.hasArg(OPT_fobjc_arc)) 1945 Res.getLangOpts()->ObjCAutoRefCount = 1; 1946 parseSanitizerKinds("-fsanitize=", Args.getAllArgValues(OPT_fsanitize_EQ), 1947 Diags, Res.getLangOpts()->Sanitize); 1948 } else { 1949 // Other LangOpts are only initialzed when the input is not AST or LLVM IR. 1950 ParseLangArgs(*Res.getLangOpts(), Args, DashX, Diags); 1951 if (Res.getFrontendOpts().ProgramAction == frontend::RewriteObjC) 1952 Res.getLangOpts()->ObjCExceptions = 1; 1953 } 1954 // FIXME: ParsePreprocessorArgs uses the FileManager to read the contents of 1955 // PCH file and find the original header name. Remove the need to do that in 1956 // ParsePreprocessorArgs and remove the FileManager 1957 // parameters from the function and the "FileManager.h" #include. 1958 FileManager FileMgr(Res.getFileSystemOpts()); 1959 ParsePreprocessorArgs(Res.getPreprocessorOpts(), Args, FileMgr, Diags); 1960 ParsePreprocessorOutputArgs(Res.getPreprocessorOutputOpts(), Args, 1961 Res.getFrontendOpts().ProgramAction); 1962 return Success; 1963 } 1964 1965 namespace { 1966 1967 class ModuleSignature { 1968 SmallVector<uint64_t, 16> Data; 1969 unsigned CurBit; 1970 uint64_t CurValue; 1971 1972 public: 1973 ModuleSignature() : CurBit(0), CurValue(0) { } 1974 1975 void add(uint64_t Value, unsigned Bits); 1976 void add(StringRef Value); 1977 void flush(); 1978 1979 llvm::APInt getAsInteger() const; 1980 }; 1981 } 1982 1983 void ModuleSignature::add(uint64_t Value, unsigned int NumBits) { 1984 CurValue |= Value << CurBit; 1985 if (CurBit + NumBits < 64) { 1986 CurBit += NumBits; 1987 return; 1988 } 1989 1990 // Add the current word. 1991 Data.push_back(CurValue); 1992 1993 if (CurBit) 1994 CurValue = Value >> (64-CurBit); 1995 else 1996 CurValue = 0; 1997 CurBit = (CurBit+NumBits) & 63; 1998 } 1999 2000 void ModuleSignature::flush() { 2001 if (CurBit == 0) 2002 return; 2003 2004 Data.push_back(CurValue); 2005 CurBit = 0; 2006 CurValue = 0; 2007 } 2008 2009 void ModuleSignature::add(StringRef Value) { 2010 for (auto &c : Value) 2011 add(c, 8); 2012 } 2013 2014 llvm::APInt ModuleSignature::getAsInteger() const { 2015 return llvm::APInt(Data.size() * 64, Data); 2016 } 2017 2018 std::string CompilerInvocation::getModuleHash() const { 2019 // Note: For QoI reasons, the things we use as a hash here should all be 2020 // dumped via the -module-info flag. 2021 using llvm::hash_code; 2022 using llvm::hash_value; 2023 using llvm::hash_combine; 2024 2025 // Start the signature with the compiler version. 2026 // FIXME: We'd rather use something more cryptographically sound than 2027 // CityHash, but this will do for now. 2028 hash_code code = hash_value(getClangFullRepositoryVersion()); 2029 2030 // Extend the signature with the language options 2031 #define LANGOPT(Name, Bits, Default, Description) \ 2032 code = hash_combine(code, LangOpts->Name); 2033 #define ENUM_LANGOPT(Name, Type, Bits, Default, Description) \ 2034 code = hash_combine(code, static_cast<unsigned>(LangOpts->get##Name())); 2035 #define BENIGN_LANGOPT(Name, Bits, Default, Description) 2036 #define BENIGN_ENUM_LANGOPT(Name, Type, Bits, Default, Description) 2037 #include "clang/Basic/LangOptions.def" 2038 2039 for (StringRef Feature : LangOpts->ModuleFeatures) 2040 code = hash_combine(code, Feature); 2041 2042 // Extend the signature with the target options. 2043 code = hash_combine(code, TargetOpts->Triple, TargetOpts->CPU, 2044 TargetOpts->ABI); 2045 for (unsigned i = 0, n = TargetOpts->FeaturesAsWritten.size(); i != n; ++i) 2046 code = hash_combine(code, TargetOpts->FeaturesAsWritten[i]); 2047 2048 // Extend the signature with preprocessor options. 2049 const PreprocessorOptions &ppOpts = getPreprocessorOpts(); 2050 const HeaderSearchOptions &hsOpts = getHeaderSearchOpts(); 2051 code = hash_combine(code, ppOpts.UsePredefines, ppOpts.DetailedRecord); 2052 2053 for (std::vector<std::pair<std::string, bool/*isUndef*/>>::const_iterator 2054 I = getPreprocessorOpts().Macros.begin(), 2055 IEnd = getPreprocessorOpts().Macros.end(); 2056 I != IEnd; ++I) { 2057 // If we're supposed to ignore this macro for the purposes of modules, 2058 // don't put it into the hash. 2059 if (!hsOpts.ModulesIgnoreMacros.empty()) { 2060 // Check whether we're ignoring this macro. 2061 StringRef MacroDef = I->first; 2062 if (hsOpts.ModulesIgnoreMacros.count(MacroDef.split('=').first)) 2063 continue; 2064 } 2065 2066 code = hash_combine(code, I->first, I->second); 2067 } 2068 2069 // Extend the signature with the sysroot. 2070 code = hash_combine(code, hsOpts.Sysroot, hsOpts.UseBuiltinIncludes, 2071 hsOpts.UseStandardSystemIncludes, 2072 hsOpts.UseStandardCXXIncludes, 2073 hsOpts.UseLibcxx); 2074 code = hash_combine(code, hsOpts.ResourceDir); 2075 2076 // Extend the signature with the user build path. 2077 code = hash_combine(code, hsOpts.ModuleUserBuildPath); 2078 2079 // Darwin-specific hack: if we have a sysroot, use the contents and 2080 // modification time of 2081 // $sysroot/System/Library/CoreServices/SystemVersion.plist 2082 // as part of the module hash. 2083 if (!hsOpts.Sysroot.empty()) { 2084 SmallString<128> systemVersionFile; 2085 systemVersionFile += hsOpts.Sysroot; 2086 llvm::sys::path::append(systemVersionFile, "System"); 2087 llvm::sys::path::append(systemVersionFile, "Library"); 2088 llvm::sys::path::append(systemVersionFile, "CoreServices"); 2089 llvm::sys::path::append(systemVersionFile, "SystemVersion.plist"); 2090 2091 llvm::ErrorOr<std::unique_ptr<llvm::MemoryBuffer>> buffer = 2092 llvm::MemoryBuffer::getFile(systemVersionFile); 2093 if (buffer) { 2094 code = hash_combine(code, buffer.get()->getBuffer()); 2095 2096 struct stat statBuf; 2097 if (stat(systemVersionFile.c_str(), &statBuf) == 0) 2098 code = hash_combine(code, statBuf.st_mtime); 2099 } 2100 } 2101 2102 return llvm::APInt(64, code).toString(36, /*Signed=*/false); 2103 } 2104 2105 namespace clang { 2106 2107 template<typename IntTy> 2108 static IntTy getLastArgIntValueImpl(const ArgList &Args, OptSpecifier Id, 2109 IntTy Default, 2110 DiagnosticsEngine *Diags) { 2111 IntTy Res = Default; 2112 if (Arg *A = Args.getLastArg(Id)) { 2113 if (StringRef(A->getValue()).getAsInteger(10, Res)) { 2114 if (Diags) 2115 Diags->Report(diag::err_drv_invalid_int_value) << A->getAsString(Args) 2116 << A->getValue(); 2117 } 2118 } 2119 return Res; 2120 } 2121 2122 2123 // Declared in clang/Frontend/Utils.h. 2124 int getLastArgIntValue(const ArgList &Args, OptSpecifier Id, int Default, 2125 DiagnosticsEngine *Diags) { 2126 return getLastArgIntValueImpl<int>(Args, Id, Default, Diags); 2127 } 2128 2129 uint64_t getLastArgUInt64Value(const ArgList &Args, OptSpecifier Id, 2130 uint64_t Default, 2131 DiagnosticsEngine *Diags) { 2132 return getLastArgIntValueImpl<uint64_t>(Args, Id, Default, Diags); 2133 } 2134 2135 void BuryPointer(const void *Ptr) { 2136 // This function may be called only a small fixed amount of times per each 2137 // invocation, otherwise we do actually have a leak which we want to report. 2138 // If this function is called more than kGraveYardMaxSize times, the pointers 2139 // will not be properly buried and a leak detector will report a leak, which 2140 // is what we want in such case. 2141 static const size_t kGraveYardMaxSize = 16; 2142 LLVM_ATTRIBUTE_UNUSED static const void *GraveYard[kGraveYardMaxSize]; 2143 static std::atomic<unsigned> GraveYardSize; 2144 unsigned Idx = GraveYardSize++; 2145 if (Idx >= kGraveYardMaxSize) 2146 return; 2147 GraveYard[Idx] = Ptr; 2148 } 2149 2150 IntrusiveRefCntPtr<vfs::FileSystem> 2151 createVFSFromCompilerInvocation(const CompilerInvocation &CI, 2152 DiagnosticsEngine &Diags) { 2153 if (CI.getHeaderSearchOpts().VFSOverlayFiles.empty()) 2154 return vfs::getRealFileSystem(); 2155 2156 IntrusiveRefCntPtr<vfs::OverlayFileSystem> 2157 Overlay(new vfs::OverlayFileSystem(vfs::getRealFileSystem())); 2158 // earlier vfs files are on the bottom 2159 for (const std::string &File : CI.getHeaderSearchOpts().VFSOverlayFiles) { 2160 llvm::ErrorOr<std::unique_ptr<llvm::MemoryBuffer>> Buffer = 2161 llvm::MemoryBuffer::getFile(File); 2162 if (!Buffer) { 2163 Diags.Report(diag::err_missing_vfs_overlay_file) << File; 2164 return IntrusiveRefCntPtr<vfs::FileSystem>(); 2165 } 2166 2167 IntrusiveRefCntPtr<vfs::FileSystem> FS = 2168 vfs::getVFSFromYAML(std::move(Buffer.get()), /*DiagHandler*/ nullptr); 2169 if (!FS.get()) { 2170 Diags.Report(diag::err_invalid_vfs_overlay) << File; 2171 return IntrusiveRefCntPtr<vfs::FileSystem>(); 2172 } 2173 Overlay->pushOverlay(FS); 2174 } 2175 return Overlay; 2176 } 2177 } // end namespace clang 2178