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 "TestModuleFileExtension.h" 11 #include "clang/Frontend/CompilerInvocation.h" 12 #include "clang/Basic/FileManager.h" 13 #include "clang/Basic/Version.h" 14 #include "clang/Config/config.h" 15 #include "clang/Driver/DriverDiagnostic.h" 16 #include "clang/Driver/Options.h" 17 #include "clang/Driver/Util.h" 18 #include "clang/Frontend/FrontendDiagnostic.h" 19 #include "clang/Frontend/LangStandard.h" 20 #include "clang/Frontend/Utils.h" 21 #include "clang/Lex/HeaderSearchOptions.h" 22 #include "clang/Serialization/ASTReader.h" 23 #include "clang/Serialization/ModuleFileExtension.h" 24 #include "llvm/ADT/Hashing.h" 25 #include "llvm/ADT/STLExtras.h" 26 #include "llvm/ADT/SmallVector.h" 27 #include "llvm/ADT/StringExtras.h" 28 #include "llvm/ADT/StringSwitch.h" 29 #include "llvm/ADT/Triple.h" 30 #include "llvm/Linker/Linker.h" 31 #include "llvm/Option/Arg.h" 32 #include "llvm/Option/ArgList.h" 33 #include "llvm/Option/OptTable.h" 34 #include "llvm/Option/Option.h" 35 #include "llvm/Support/CodeGen.h" 36 #include "llvm/Support/ErrorHandling.h" 37 #include "llvm/Support/FileSystem.h" 38 #include "llvm/Support/Host.h" 39 #include "llvm/Support/Path.h" 40 #include "llvm/Support/Process.h" 41 #include "llvm/Target/TargetOptions.h" 42 #include <atomic> 43 #include <memory> 44 #include <sys/stat.h> 45 #include <system_error> 46 using namespace clang; 47 48 //===----------------------------------------------------------------------===// 49 // Initialization. 50 //===----------------------------------------------------------------------===// 51 52 CompilerInvocationBase::CompilerInvocationBase() 53 : LangOpts(new LangOptions()), TargetOpts(new TargetOptions()), 54 DiagnosticOpts(new DiagnosticOptions()), 55 HeaderSearchOpts(new HeaderSearchOptions()), 56 PreprocessorOpts(new PreprocessorOptions()) {} 57 58 CompilerInvocationBase::CompilerInvocationBase(const CompilerInvocationBase &X) 59 : RefCountedBase<CompilerInvocation>(), 60 LangOpts(new LangOptions(*X.getLangOpts())), 61 TargetOpts(new TargetOptions(X.getTargetOpts())), 62 DiagnosticOpts(new DiagnosticOptions(X.getDiagnosticOpts())), 63 HeaderSearchOpts(new HeaderSearchOptions(X.getHeaderSearchOpts())), 64 PreprocessorOpts(new PreprocessorOptions(X.getPreprocessorOpts())) {} 65 66 CompilerInvocationBase::~CompilerInvocationBase() {} 67 68 //===----------------------------------------------------------------------===// 69 // Deserialization (from args) 70 //===----------------------------------------------------------------------===// 71 72 using namespace clang::driver; 73 using namespace clang::driver::options; 74 using namespace llvm::opt; 75 76 // 77 78 static unsigned getOptimizationLevel(ArgList &Args, InputKind IK, 79 DiagnosticsEngine &Diags) { 80 unsigned DefaultOpt = 0; 81 if (IK == IK_OpenCL && !Args.hasArg(OPT_cl_opt_disable)) 82 DefaultOpt = 2; 83 84 if (Arg *A = Args.getLastArg(options::OPT_O_Group)) { 85 if (A->getOption().matches(options::OPT_O0)) 86 return 0; 87 88 if (A->getOption().matches(options::OPT_Ofast)) 89 return 3; 90 91 assert (A->getOption().matches(options::OPT_O)); 92 93 StringRef S(A->getValue()); 94 if (S == "s" || S == "z" || S.empty()) 95 return 2; 96 97 return getLastArgIntValue(Args, OPT_O, DefaultOpt, Diags); 98 } 99 100 return DefaultOpt; 101 } 102 103 static unsigned getOptimizationLevelSize(ArgList &Args) { 104 if (Arg *A = Args.getLastArg(options::OPT_O_Group)) { 105 if (A->getOption().matches(options::OPT_O)) { 106 switch (A->getValue()[0]) { 107 default: 108 return 0; 109 case 's': 110 return 1; 111 case 'z': 112 return 2; 113 } 114 } 115 } 116 return 0; 117 } 118 119 static void addDiagnosticArgs(ArgList &Args, OptSpecifier Group, 120 OptSpecifier GroupWithValue, 121 std::vector<std::string> &Diagnostics) { 122 for (Arg *A : Args.filtered(Group)) { 123 if (A->getOption().getKind() == Option::FlagClass) { 124 // The argument is a pure flag (such as OPT_Wall or OPT_Wdeprecated). Add 125 // its name (minus the "W" or "R" at the beginning) to the warning list. 126 Diagnostics.push_back(A->getOption().getName().drop_front(1)); 127 } else if (A->getOption().matches(GroupWithValue)) { 128 // This is -Wfoo= or -Rfoo=, where foo is the name of the diagnostic group. 129 Diagnostics.push_back(A->getOption().getName().drop_front(1).rtrim("=-")); 130 } else { 131 // Otherwise, add its value (for OPT_W_Joined and similar). 132 for (const char *Arg : A->getValues()) 133 Diagnostics.emplace_back(Arg); 134 } 135 } 136 } 137 138 static bool ParseAnalyzerArgs(AnalyzerOptions &Opts, ArgList &Args, 139 DiagnosticsEngine &Diags) { 140 using namespace options; 141 bool Success = true; 142 if (Arg *A = Args.getLastArg(OPT_analyzer_store)) { 143 StringRef Name = A->getValue(); 144 AnalysisStores Value = llvm::StringSwitch<AnalysisStores>(Name) 145 #define ANALYSIS_STORE(NAME, CMDFLAG, DESC, CREATFN) \ 146 .Case(CMDFLAG, NAME##Model) 147 #include "clang/StaticAnalyzer/Core/Analyses.def" 148 .Default(NumStores); 149 if (Value == NumStores) { 150 Diags.Report(diag::err_drv_invalid_value) 151 << A->getAsString(Args) << Name; 152 Success = false; 153 } else { 154 Opts.AnalysisStoreOpt = Value; 155 } 156 } 157 158 if (Arg *A = Args.getLastArg(OPT_analyzer_constraints)) { 159 StringRef Name = A->getValue(); 160 AnalysisConstraints Value = llvm::StringSwitch<AnalysisConstraints>(Name) 161 #define ANALYSIS_CONSTRAINTS(NAME, CMDFLAG, DESC, CREATFN) \ 162 .Case(CMDFLAG, NAME##Model) 163 #include "clang/StaticAnalyzer/Core/Analyses.def" 164 .Default(NumConstraints); 165 if (Value == NumConstraints) { 166 Diags.Report(diag::err_drv_invalid_value) 167 << A->getAsString(Args) << Name; 168 Success = false; 169 } else { 170 Opts.AnalysisConstraintsOpt = Value; 171 } 172 } 173 174 if (Arg *A = Args.getLastArg(OPT_analyzer_output)) { 175 StringRef Name = A->getValue(); 176 AnalysisDiagClients Value = llvm::StringSwitch<AnalysisDiagClients>(Name) 177 #define ANALYSIS_DIAGNOSTICS(NAME, CMDFLAG, DESC, CREATFN) \ 178 .Case(CMDFLAG, PD_##NAME) 179 #include "clang/StaticAnalyzer/Core/Analyses.def" 180 .Default(NUM_ANALYSIS_DIAG_CLIENTS); 181 if (Value == NUM_ANALYSIS_DIAG_CLIENTS) { 182 Diags.Report(diag::err_drv_invalid_value) 183 << A->getAsString(Args) << Name; 184 Success = false; 185 } else { 186 Opts.AnalysisDiagOpt = Value; 187 } 188 } 189 190 if (Arg *A = Args.getLastArg(OPT_analyzer_purge)) { 191 StringRef Name = A->getValue(); 192 AnalysisPurgeMode Value = llvm::StringSwitch<AnalysisPurgeMode>(Name) 193 #define ANALYSIS_PURGE(NAME, CMDFLAG, DESC) \ 194 .Case(CMDFLAG, NAME) 195 #include "clang/StaticAnalyzer/Core/Analyses.def" 196 .Default(NumPurgeModes); 197 if (Value == NumPurgeModes) { 198 Diags.Report(diag::err_drv_invalid_value) 199 << A->getAsString(Args) << Name; 200 Success = false; 201 } else { 202 Opts.AnalysisPurgeOpt = Value; 203 } 204 } 205 206 if (Arg *A = Args.getLastArg(OPT_analyzer_inlining_mode)) { 207 StringRef Name = A->getValue(); 208 AnalysisInliningMode Value = llvm::StringSwitch<AnalysisInliningMode>(Name) 209 #define ANALYSIS_INLINING_MODE(NAME, CMDFLAG, DESC) \ 210 .Case(CMDFLAG, NAME) 211 #include "clang/StaticAnalyzer/Core/Analyses.def" 212 .Default(NumInliningModes); 213 if (Value == NumInliningModes) { 214 Diags.Report(diag::err_drv_invalid_value) 215 << A->getAsString(Args) << Name; 216 Success = false; 217 } else { 218 Opts.InliningMode = Value; 219 } 220 } 221 222 Opts.ShowCheckerHelp = Args.hasArg(OPT_analyzer_checker_help); 223 Opts.DisableAllChecks = Args.hasArg(OPT_analyzer_disable_all_checks); 224 225 Opts.visualizeExplodedGraphWithGraphViz = 226 Args.hasArg(OPT_analyzer_viz_egraph_graphviz); 227 Opts.visualizeExplodedGraphWithUbiGraph = 228 Args.hasArg(OPT_analyzer_viz_egraph_ubigraph); 229 Opts.NoRetryExhausted = Args.hasArg(OPT_analyzer_disable_retry_exhausted); 230 Opts.AnalyzeAll = Args.hasArg(OPT_analyzer_opt_analyze_headers); 231 Opts.AnalyzerDisplayProgress = Args.hasArg(OPT_analyzer_display_progress); 232 Opts.AnalyzeNestedBlocks = 233 Args.hasArg(OPT_analyzer_opt_analyze_nested_blocks); 234 Opts.eagerlyAssumeBinOpBifurcation = Args.hasArg(OPT_analyzer_eagerly_assume); 235 Opts.AnalyzeSpecificFunction = Args.getLastArgValue(OPT_analyze_function); 236 Opts.UnoptimizedCFG = Args.hasArg(OPT_analysis_UnoptimizedCFG); 237 Opts.TrimGraph = Args.hasArg(OPT_trim_egraph); 238 Opts.maxBlockVisitOnPath = 239 getLastArgIntValue(Args, OPT_analyzer_max_loop, 4, Diags); 240 Opts.PrintStats = Args.hasArg(OPT_analyzer_stats); 241 Opts.InlineMaxStackDepth = 242 getLastArgIntValue(Args, OPT_analyzer_inline_max_stack_depth, 243 Opts.InlineMaxStackDepth, Diags); 244 245 Opts.CheckersControlList.clear(); 246 for (const Arg *A : 247 Args.filtered(OPT_analyzer_checker, OPT_analyzer_disable_checker)) { 248 A->claim(); 249 bool enable = (A->getOption().getID() == OPT_analyzer_checker); 250 // We can have a list of comma separated checker names, e.g: 251 // '-analyzer-checker=cocoa,unix' 252 StringRef checkerList = A->getValue(); 253 SmallVector<StringRef, 4> checkers; 254 checkerList.split(checkers, ","); 255 for (StringRef checker : checkers) 256 Opts.CheckersControlList.emplace_back(checker, enable); 257 } 258 259 // Go through the analyzer configuration options. 260 for (const Arg *A : Args.filtered(OPT_analyzer_config)) { 261 A->claim(); 262 // We can have a list of comma separated config names, e.g: 263 // '-analyzer-config key1=val1,key2=val2' 264 StringRef configList = A->getValue(); 265 SmallVector<StringRef, 4> configVals; 266 configList.split(configVals, ","); 267 for (unsigned i = 0, e = configVals.size(); i != e; ++i) { 268 StringRef key, val; 269 std::tie(key, val) = configVals[i].split("="); 270 if (val.empty()) { 271 Diags.Report(SourceLocation(), 272 diag::err_analyzer_config_no_value) << configVals[i]; 273 Success = false; 274 break; 275 } 276 if (val.find('=') != StringRef::npos) { 277 Diags.Report(SourceLocation(), 278 diag::err_analyzer_config_multiple_values) 279 << configVals[i]; 280 Success = false; 281 break; 282 } 283 Opts.Config[key] = val; 284 } 285 } 286 287 return Success; 288 } 289 290 static bool ParseMigratorArgs(MigratorOptions &Opts, ArgList &Args) { 291 Opts.NoNSAllocReallocError = Args.hasArg(OPT_migrator_no_nsalloc_error); 292 Opts.NoFinalizeRemoval = Args.hasArg(OPT_migrator_no_finalize_removal); 293 return true; 294 } 295 296 static void ParseCommentArgs(CommentOptions &Opts, ArgList &Args) { 297 Opts.BlockCommandNames = Args.getAllArgValues(OPT_fcomment_block_commands); 298 Opts.ParseAllComments = Args.hasArg(OPT_fparse_all_comments); 299 } 300 301 static StringRef getCodeModel(ArgList &Args, DiagnosticsEngine &Diags) { 302 if (Arg *A = Args.getLastArg(OPT_mcode_model)) { 303 StringRef Value = A->getValue(); 304 if (Value == "small" || Value == "kernel" || Value == "medium" || 305 Value == "large") 306 return Value; 307 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Value; 308 } 309 return "default"; 310 } 311 312 /// \brief Create a new Regex instance out of the string value in \p RpassArg. 313 /// It returns a pointer to the newly generated Regex instance. 314 static std::shared_ptr<llvm::Regex> 315 GenerateOptimizationRemarkRegex(DiagnosticsEngine &Diags, ArgList &Args, 316 Arg *RpassArg) { 317 StringRef Val = RpassArg->getValue(); 318 std::string RegexError; 319 std::shared_ptr<llvm::Regex> Pattern = std::make_shared<llvm::Regex>(Val); 320 if (!Pattern->isValid(RegexError)) { 321 Diags.Report(diag::err_drv_optimization_remark_pattern) 322 << RegexError << RpassArg->getAsString(Args); 323 Pattern.reset(); 324 } 325 return Pattern; 326 } 327 328 static bool parseDiagnosticLevelMask(StringRef FlagName, 329 const std::vector<std::string> &Levels, 330 DiagnosticsEngine *Diags, 331 DiagnosticLevelMask &M) { 332 bool Success = true; 333 for (const auto &Level : Levels) { 334 DiagnosticLevelMask const PM = 335 llvm::StringSwitch<DiagnosticLevelMask>(Level) 336 .Case("note", DiagnosticLevelMask::Note) 337 .Case("remark", DiagnosticLevelMask::Remark) 338 .Case("warning", DiagnosticLevelMask::Warning) 339 .Case("error", DiagnosticLevelMask::Error) 340 .Default(DiagnosticLevelMask::None); 341 if (PM == DiagnosticLevelMask::None) { 342 Success = false; 343 if (Diags) 344 Diags->Report(diag::err_drv_invalid_value) << FlagName << Level; 345 } 346 M = M | PM; 347 } 348 return Success; 349 } 350 351 static void parseSanitizerKinds(StringRef FlagName, 352 const std::vector<std::string> &Sanitizers, 353 DiagnosticsEngine &Diags, SanitizerSet &S) { 354 for (const auto &Sanitizer : Sanitizers) { 355 SanitizerMask K = parseSanitizerValue(Sanitizer, /*AllowGroups=*/false); 356 if (K == 0) 357 Diags.Report(diag::err_drv_invalid_value) << FlagName << Sanitizer; 358 else 359 S.set(K, true); 360 } 361 } 362 363 static bool ParseCodeGenArgs(CodeGenOptions &Opts, ArgList &Args, InputKind IK, 364 DiagnosticsEngine &Diags, 365 const TargetOptions &TargetOpts) { 366 using namespace options; 367 bool Success = true; 368 llvm::Triple Triple = llvm::Triple(TargetOpts.Triple); 369 370 unsigned OptimizationLevel = getOptimizationLevel(Args, IK, Diags); 371 // TODO: This could be done in Driver 372 unsigned MaxOptLevel = 3; 373 if (OptimizationLevel > MaxOptLevel) { 374 // If the optimization level is not supported, fall back on the default 375 // optimization 376 Diags.Report(diag::warn_drv_optimization_value) 377 << Args.getLastArg(OPT_O)->getAsString(Args) << "-O" << MaxOptLevel; 378 OptimizationLevel = MaxOptLevel; 379 } 380 Opts.OptimizationLevel = OptimizationLevel; 381 382 // We must always run at least the always inlining pass. 383 Opts.setInlining( 384 (Opts.OptimizationLevel > 1) ? CodeGenOptions::NormalInlining 385 : CodeGenOptions::OnlyAlwaysInlining); 386 // -fno-inline-functions overrides OptimizationLevel > 1. 387 Opts.NoInline = Args.hasArg(OPT_fno_inline); 388 Opts.setInlining(Args.hasArg(OPT_fno_inline_functions) ? 389 CodeGenOptions::OnlyAlwaysInlining : Opts.getInlining()); 390 391 if (Arg *A = Args.getLastArg(OPT_fveclib)) { 392 StringRef Name = A->getValue(); 393 if (Name == "Accelerate") 394 Opts.setVecLib(CodeGenOptions::Accelerate); 395 else if (Name == "none") 396 Opts.setVecLib(CodeGenOptions::NoLibrary); 397 else 398 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Name; 399 } 400 401 if (Arg *A = Args.getLastArg(OPT_debug_info_kind_EQ)) { 402 Opts.setDebugInfo( 403 llvm::StringSwitch<CodeGenOptions::DebugInfoKind>(A->getValue()) 404 .Case("line-tables-only", CodeGenOptions::DebugLineTablesOnly) 405 .Case("limited", CodeGenOptions::LimitedDebugInfo) 406 .Case("standalone", CodeGenOptions::FullDebugInfo)); 407 } 408 if (Arg *A = Args.getLastArg(OPT_debugger_tuning_EQ)) { 409 Opts.setDebuggerTuning( 410 llvm::StringSwitch<CodeGenOptions::DebuggerKind>(A->getValue()) 411 .Case("gdb", CodeGenOptions::DebuggerKindGDB) 412 .Case("lldb", CodeGenOptions::DebuggerKindLLDB) 413 .Case("sce", CodeGenOptions::DebuggerKindSCE)); 414 } 415 Opts.DwarfVersion = getLastArgIntValue(Args, OPT_dwarf_version_EQ, 0, Diags); 416 Opts.DebugColumnInfo = Args.hasArg(OPT_dwarf_column_info); 417 Opts.EmitCodeView = Args.hasArg(OPT_gcodeview); 418 Opts.SplitDwarfFile = Args.getLastArgValue(OPT_split_dwarf_file); 419 Opts.DebugTypeExtRefs = Args.hasArg(OPT_dwarf_ext_refs); 420 if (Triple.isPS4CPU()) 421 Opts.DebugExplicitImport = true; 422 423 for (const auto &Arg : Args.getAllArgValues(OPT_fdebug_prefix_map_EQ)) 424 Opts.DebugPrefixMap.insert(StringRef(Arg).split('=')); 425 426 if (const Arg *A = 427 Args.getLastArg(OPT_emit_llvm_uselists, OPT_no_emit_llvm_uselists)) 428 Opts.EmitLLVMUseLists = A->getOption().getID() == OPT_emit_llvm_uselists; 429 430 Opts.DisableLLVMOpts = Args.hasArg(OPT_disable_llvm_optzns); 431 Opts.DisableLLVMPasses = Args.hasArg(OPT_disable_llvm_passes); 432 Opts.DisableRedZone = Args.hasArg(OPT_disable_red_zone); 433 Opts.ForbidGuardVariables = Args.hasArg(OPT_fforbid_guard_variables); 434 Opts.UseRegisterSizedBitfieldAccess = Args.hasArg( 435 OPT_fuse_register_sized_bitfield_access); 436 Opts.RelaxedAliasing = Args.hasArg(OPT_relaxed_aliasing); 437 Opts.StructPathTBAA = !Args.hasArg(OPT_no_struct_path_tbaa); 438 Opts.DwarfDebugFlags = Args.getLastArgValue(OPT_dwarf_debug_flags); 439 Opts.MergeAllConstants = !Args.hasArg(OPT_fno_merge_all_constants); 440 Opts.NoCommon = Args.hasArg(OPT_fno_common); 441 Opts.NoImplicitFloat = Args.hasArg(OPT_no_implicit_float); 442 Opts.OptimizeSize = getOptimizationLevelSize(Args); 443 Opts.SimplifyLibCalls = !(Args.hasArg(OPT_fno_builtin) || 444 Args.hasArg(OPT_ffreestanding)); 445 Opts.UnrollLoops = 446 Args.hasFlag(OPT_funroll_loops, OPT_fno_unroll_loops, 447 (Opts.OptimizationLevel > 1 && !Opts.OptimizeSize)); 448 Opts.RerollLoops = Args.hasArg(OPT_freroll_loops); 449 450 Opts.DisableIntegratedAS = Args.hasArg(OPT_fno_integrated_as); 451 Opts.Autolink = !Args.hasArg(OPT_fno_autolink); 452 Opts.SampleProfileFile = Args.getLastArgValue(OPT_fprofile_sample_use_EQ); 453 Opts.ProfileInstrGenerate = Args.hasArg(OPT_fprofile_instr_generate) || 454 Args.hasArg(OPT_fprofile_instr_generate_EQ); 455 Opts.InstrProfileOutput = Args.getLastArgValue(OPT_fprofile_instr_generate_EQ); 456 Opts.InstrProfileInput = Args.getLastArgValue(OPT_fprofile_instr_use_EQ); 457 Opts.CoverageMapping = 458 Args.hasFlag(OPT_fcoverage_mapping, OPT_fno_coverage_mapping, false); 459 Opts.DumpCoverageMapping = Args.hasArg(OPT_dump_coverage_mapping); 460 Opts.AsmVerbose = Args.hasArg(OPT_masm_verbose); 461 Opts.ObjCAutoRefCountExceptions = Args.hasArg(OPT_fobjc_arc_exceptions); 462 Opts.CXAAtExit = !Args.hasArg(OPT_fno_use_cxa_atexit); 463 Opts.CXXCtorDtorAliases = Args.hasArg(OPT_mconstructor_aliases); 464 Opts.CodeModel = getCodeModel(Args, Diags); 465 Opts.DebugPass = Args.getLastArgValue(OPT_mdebug_pass); 466 Opts.DisableFPElim = 467 (Args.hasArg(OPT_mdisable_fp_elim) || Args.hasArg(OPT_pg)); 468 Opts.DisableFree = Args.hasArg(OPT_disable_free); 469 Opts.DisableTailCalls = Args.hasArg(OPT_mdisable_tail_calls); 470 Opts.FloatABI = Args.getLastArgValue(OPT_mfloat_abi); 471 if (Arg *A = Args.getLastArg(OPT_meabi)) { 472 StringRef Value = A->getValue(); 473 llvm::EABI EABIVersion = llvm::StringSwitch<llvm::EABI>(Value) 474 .Case("default", llvm::EABI::Default) 475 .Case("4", llvm::EABI::EABI4) 476 .Case("5", llvm::EABI::EABI5) 477 .Case("gnu", llvm::EABI::GNU) 478 .Default(llvm::EABI::Unknown); 479 if (EABIVersion == llvm::EABI::Unknown) 480 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) 481 << Value; 482 else 483 Opts.EABIVersion = Value; 484 } 485 Opts.LessPreciseFPMAD = Args.hasArg(OPT_cl_mad_enable); 486 Opts.LimitFloatPrecision = Args.getLastArgValue(OPT_mlimit_float_precision); 487 Opts.NoInfsFPMath = (Args.hasArg(OPT_menable_no_infinities) || 488 Args.hasArg(OPT_cl_finite_math_only) || 489 Args.hasArg(OPT_cl_fast_relaxed_math)); 490 Opts.NoNaNsFPMath = (Args.hasArg(OPT_menable_no_nans) || 491 Args.hasArg(OPT_cl_unsafe_math_optimizations) || 492 Args.hasArg(OPT_cl_finite_math_only) || 493 Args.hasArg(OPT_cl_fast_relaxed_math)); 494 Opts.NoSignedZeros = Args.hasArg(OPT_fno_signed_zeros); 495 Opts.ReciprocalMath = Args.hasArg(OPT_freciprocal_math); 496 Opts.NoZeroInitializedInBSS = Args.hasArg(OPT_mno_zero_initialized_in_bss); 497 Opts.BackendOptions = Args.getAllArgValues(OPT_backend_option); 498 Opts.NumRegisterParameters = getLastArgIntValue(Args, OPT_mregparm, 0, Diags); 499 Opts.NoExecStack = Args.hasArg(OPT_mno_exec_stack); 500 Opts.FatalWarnings = Args.hasArg(OPT_massembler_fatal_warnings); 501 Opts.EnableSegmentedStacks = Args.hasArg(OPT_split_stacks); 502 Opts.RelaxAll = Args.hasArg(OPT_mrelax_all); 503 Opts.OmitLeafFramePointer = Args.hasArg(OPT_momit_leaf_frame_pointer); 504 Opts.SaveTempLabels = Args.hasArg(OPT_msave_temp_labels); 505 Opts.NoDwarfDirectoryAsm = Args.hasArg(OPT_fno_dwarf_directory_asm); 506 Opts.SoftFloat = Args.hasArg(OPT_msoft_float); 507 Opts.StrictEnums = Args.hasArg(OPT_fstrict_enums); 508 Opts.StrictVTablePointers = Args.hasArg(OPT_fstrict_vtable_pointers); 509 Opts.UnsafeFPMath = Args.hasArg(OPT_menable_unsafe_fp_math) || 510 Args.hasArg(OPT_cl_unsafe_math_optimizations) || 511 Args.hasArg(OPT_cl_fast_relaxed_math); 512 Opts.UnwindTables = Args.hasArg(OPT_munwind_tables); 513 Opts.RelocationModel = Args.getLastArgValue(OPT_mrelocation_model, "pic"); 514 Opts.ThreadModel = Args.getLastArgValue(OPT_mthread_model, "posix"); 515 if (Opts.ThreadModel != "posix" && Opts.ThreadModel != "single") 516 Diags.Report(diag::err_drv_invalid_value) 517 << Args.getLastArg(OPT_mthread_model)->getAsString(Args) 518 << Opts.ThreadModel; 519 Opts.TrapFuncName = Args.getLastArgValue(OPT_ftrap_function_EQ); 520 Opts.UseInitArray = Args.hasArg(OPT_fuse_init_array); 521 522 Opts.FunctionSections = Args.hasFlag(OPT_ffunction_sections, 523 OPT_fno_function_sections, false); 524 Opts.DataSections = Args.hasFlag(OPT_fdata_sections, 525 OPT_fno_data_sections, false); 526 Opts.UniqueSectionNames = Args.hasFlag(OPT_funique_section_names, 527 OPT_fno_unique_section_names, true); 528 529 Opts.MergeFunctions = Args.hasArg(OPT_fmerge_functions); 530 531 Opts.PrepareForLTO = Args.hasArg(OPT_flto, OPT_flto_EQ); 532 const Arg *A = Args.getLastArg(OPT_flto, OPT_flto_EQ); 533 Opts.EmitFunctionSummary = A && A->containsValue("thin"); 534 if (Arg *A = Args.getLastArg(OPT_fthinlto_index_EQ)) { 535 if (IK != IK_LLVM_IR) 536 Diags.Report(diag::err_drv_argument_only_allowed_with) 537 << A->getAsString(Args) << "-x ir"; 538 Opts.ThinLTOIndexFile = Args.getLastArgValue(OPT_fthinlto_index_EQ); 539 } 540 541 Opts.MSVolatile = Args.hasArg(OPT_fms_volatile); 542 543 Opts.VectorizeBB = Args.hasArg(OPT_vectorize_slp_aggressive); 544 Opts.VectorizeLoop = Args.hasArg(OPT_vectorize_loops); 545 Opts.VectorizeSLP = Args.hasArg(OPT_vectorize_slp); 546 547 Opts.MainFileName = Args.getLastArgValue(OPT_main_file_name); 548 Opts.VerifyModule = !Args.hasArg(OPT_disable_llvm_verifier); 549 550 Opts.DisableGCov = Args.hasArg(OPT_test_coverage); 551 Opts.EmitGcovArcs = Args.hasArg(OPT_femit_coverage_data); 552 Opts.EmitGcovNotes = Args.hasArg(OPT_femit_coverage_notes); 553 if (Opts.EmitGcovArcs || Opts.EmitGcovNotes) { 554 Opts.CoverageFile = Args.getLastArgValue(OPT_coverage_file); 555 Opts.CoverageExtraChecksum = Args.hasArg(OPT_coverage_cfg_checksum); 556 Opts.CoverageNoFunctionNamesInData = 557 Args.hasArg(OPT_coverage_no_function_names_in_data); 558 Opts.CoverageExitBlockBeforeBody = 559 Args.hasArg(OPT_coverage_exit_block_before_body); 560 if (Args.hasArg(OPT_coverage_version_EQ)) { 561 StringRef CoverageVersion = Args.getLastArgValue(OPT_coverage_version_EQ); 562 if (CoverageVersion.size() != 4) { 563 Diags.Report(diag::err_drv_invalid_value) 564 << Args.getLastArg(OPT_coverage_version_EQ)->getAsString(Args) 565 << CoverageVersion; 566 } else { 567 memcpy(Opts.CoverageVersion, CoverageVersion.data(), 4); 568 } 569 } 570 } 571 572 Opts.InstrumentFunctions = Args.hasArg(OPT_finstrument_functions); 573 Opts.InstrumentForProfiling = Args.hasArg(OPT_pg); 574 Opts.EmitOpenCLArgMetadata = Args.hasArg(OPT_cl_kernel_arg_info); 575 Opts.CompressDebugSections = Args.hasArg(OPT_compress_debug_sections); 576 Opts.DebugCompilationDir = Args.getLastArgValue(OPT_fdebug_compilation_dir); 577 for (auto A : Args.filtered(OPT_mlink_bitcode_file, OPT_mlink_cuda_bitcode)) { 578 unsigned LinkFlags = llvm::Linker::Flags::None; 579 if (A->getOption().matches(OPT_mlink_cuda_bitcode)) 580 LinkFlags = llvm::Linker::Flags::LinkOnlyNeeded | 581 llvm::Linker::Flags::InternalizeLinkedSymbols; 582 Opts.LinkBitcodeFiles.push_back(std::make_pair(LinkFlags, A->getValue())); 583 } 584 Opts.SanitizeCoverageType = 585 getLastArgIntValue(Args, OPT_fsanitize_coverage_type, 0, Diags); 586 Opts.SanitizeCoverageIndirectCalls = 587 Args.hasArg(OPT_fsanitize_coverage_indirect_calls); 588 Opts.SanitizeCoverageTraceBB = Args.hasArg(OPT_fsanitize_coverage_trace_bb); 589 Opts.SanitizeCoverageTraceCmp = Args.hasArg(OPT_fsanitize_coverage_trace_cmp); 590 Opts.SanitizeCoverage8bitCounters = 591 Args.hasArg(OPT_fsanitize_coverage_8bit_counters); 592 Opts.SanitizeMemoryTrackOrigins = 593 getLastArgIntValue(Args, OPT_fsanitize_memory_track_origins_EQ, 0, Diags); 594 Opts.SanitizeMemoryUseAfterDtor = 595 Args.hasArg(OPT_fsanitize_memory_use_after_dtor); 596 Opts.SanitizeCfiCrossDso = Args.hasArg(OPT_fsanitize_cfi_cross_dso); 597 Opts.SSPBufferSize = 598 getLastArgIntValue(Args, OPT_stack_protector_buffer_size, 8, Diags); 599 Opts.StackRealignment = Args.hasArg(OPT_mstackrealign); 600 if (Arg *A = Args.getLastArg(OPT_mstack_alignment)) { 601 StringRef Val = A->getValue(); 602 unsigned StackAlignment = Opts.StackAlignment; 603 Val.getAsInteger(10, StackAlignment); 604 Opts.StackAlignment = StackAlignment; 605 } 606 607 if (Arg *A = Args.getLastArg(OPT_mstack_probe_size)) { 608 StringRef Val = A->getValue(); 609 unsigned StackProbeSize = Opts.StackProbeSize; 610 Val.getAsInteger(0, StackProbeSize); 611 Opts.StackProbeSize = StackProbeSize; 612 } 613 614 if (Arg *A = Args.getLastArg(OPT_fobjc_dispatch_method_EQ)) { 615 StringRef Name = A->getValue(); 616 unsigned Method = llvm::StringSwitch<unsigned>(Name) 617 .Case("legacy", CodeGenOptions::Legacy) 618 .Case("non-legacy", CodeGenOptions::NonLegacy) 619 .Case("mixed", CodeGenOptions::Mixed) 620 .Default(~0U); 621 if (Method == ~0U) { 622 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Name; 623 Success = false; 624 } else { 625 Opts.setObjCDispatchMethod( 626 static_cast<CodeGenOptions::ObjCDispatchMethodKind>(Method)); 627 } 628 } 629 630 Opts.EmulatedTLS = 631 Args.hasFlag(OPT_femulated_tls, OPT_fno_emulated_tls, false); 632 633 if (Arg *A = Args.getLastArg(OPT_ftlsmodel_EQ)) { 634 StringRef Name = A->getValue(); 635 unsigned Model = llvm::StringSwitch<unsigned>(Name) 636 .Case("global-dynamic", CodeGenOptions::GeneralDynamicTLSModel) 637 .Case("local-dynamic", CodeGenOptions::LocalDynamicTLSModel) 638 .Case("initial-exec", CodeGenOptions::InitialExecTLSModel) 639 .Case("local-exec", CodeGenOptions::LocalExecTLSModel) 640 .Default(~0U); 641 if (Model == ~0U) { 642 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Name; 643 Success = false; 644 } else { 645 Opts.setDefaultTLSModel(static_cast<CodeGenOptions::TLSModel>(Model)); 646 } 647 } 648 649 if (Arg *A = Args.getLastArg(OPT_ffp_contract)) { 650 StringRef Val = A->getValue(); 651 if (Val == "fast") 652 Opts.setFPContractMode(CodeGenOptions::FPC_Fast); 653 else if (Val == "on") 654 Opts.setFPContractMode(CodeGenOptions::FPC_On); 655 else if (Val == "off") 656 Opts.setFPContractMode(CodeGenOptions::FPC_Off); 657 else 658 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Val; 659 } 660 661 if (Arg *A = Args.getLastArg(OPT_fpcc_struct_return, OPT_freg_struct_return)) { 662 if (A->getOption().matches(OPT_fpcc_struct_return)) { 663 Opts.setStructReturnConvention(CodeGenOptions::SRCK_OnStack); 664 } else { 665 assert(A->getOption().matches(OPT_freg_struct_return)); 666 Opts.setStructReturnConvention(CodeGenOptions::SRCK_InRegs); 667 } 668 } 669 670 Opts.DependentLibraries = Args.getAllArgValues(OPT_dependent_lib); 671 bool NeedLocTracking = false; 672 673 if (Arg *A = Args.getLastArg(OPT_Rpass_EQ)) { 674 Opts.OptimizationRemarkPattern = 675 GenerateOptimizationRemarkRegex(Diags, Args, A); 676 NeedLocTracking = true; 677 } 678 679 if (Arg *A = Args.getLastArg(OPT_Rpass_missed_EQ)) { 680 Opts.OptimizationRemarkMissedPattern = 681 GenerateOptimizationRemarkRegex(Diags, Args, A); 682 NeedLocTracking = true; 683 } 684 685 if (Arg *A = Args.getLastArg(OPT_Rpass_analysis_EQ)) { 686 Opts.OptimizationRemarkAnalysisPattern = 687 GenerateOptimizationRemarkRegex(Diags, Args, A); 688 NeedLocTracking = true; 689 } 690 691 // If the user requested to use a sample profile for PGO, then the 692 // backend will need to track source location information so the profile 693 // can be incorporated into the IR. 694 if (!Opts.SampleProfileFile.empty()) 695 NeedLocTracking = true; 696 697 // If the user requested a flag that requires source locations available in 698 // the backend, make sure that the backend tracks source location information. 699 if (NeedLocTracking && Opts.getDebugInfo() == CodeGenOptions::NoDebugInfo) 700 Opts.setDebugInfo(CodeGenOptions::LocTrackingOnly); 701 702 Opts.RewriteMapFiles = Args.getAllArgValues(OPT_frewrite_map_file); 703 704 // Parse -fsanitize-recover= arguments. 705 // FIXME: Report unrecoverable sanitizers incorrectly specified here. 706 parseSanitizerKinds("-fsanitize-recover=", 707 Args.getAllArgValues(OPT_fsanitize_recover_EQ), Diags, 708 Opts.SanitizeRecover); 709 parseSanitizerKinds("-fsanitize-trap=", 710 Args.getAllArgValues(OPT_fsanitize_trap_EQ), Diags, 711 Opts.SanitizeTrap); 712 713 Opts.CudaGpuBinaryFileNames = 714 Args.getAllArgValues(OPT_fcuda_include_gpubinary); 715 716 return Success; 717 } 718 719 static void ParseDependencyOutputArgs(DependencyOutputOptions &Opts, 720 ArgList &Args) { 721 using namespace options; 722 Opts.OutputFile = Args.getLastArgValue(OPT_dependency_file); 723 Opts.Targets = Args.getAllArgValues(OPT_MT); 724 Opts.IncludeSystemHeaders = Args.hasArg(OPT_sys_header_deps); 725 Opts.IncludeModuleFiles = Args.hasArg(OPT_module_file_deps); 726 Opts.UsePhonyTargets = Args.hasArg(OPT_MP); 727 Opts.ShowHeaderIncludes = Args.hasArg(OPT_H); 728 Opts.HeaderIncludeOutputFile = Args.getLastArgValue(OPT_header_include_file); 729 Opts.AddMissingHeaderDeps = Args.hasArg(OPT_MG); 730 Opts.PrintShowIncludes = Args.hasArg(OPT_show_includes); 731 Opts.DOTOutputFile = Args.getLastArgValue(OPT_dependency_dot); 732 Opts.ModuleDependencyOutputDir = 733 Args.getLastArgValue(OPT_module_dependency_dir); 734 if (Args.hasArg(OPT_MV)) 735 Opts.OutputFormat = DependencyOutputFormat::NMake; 736 // Add sanitizer blacklists as extra dependencies. 737 // They won't be discovered by the regular preprocessor, so 738 // we let make / ninja to know about this implicit dependency. 739 Opts.ExtraDeps = Args.getAllArgValues(OPT_fdepfile_entry); 740 auto ModuleFiles = Args.getAllArgValues(OPT_fmodule_file); 741 Opts.ExtraDeps.insert(Opts.ExtraDeps.end(), ModuleFiles.begin(), 742 ModuleFiles.end()); 743 } 744 745 bool clang::ParseDiagnosticArgs(DiagnosticOptions &Opts, ArgList &Args, 746 DiagnosticsEngine *Diags) { 747 using namespace options; 748 bool Success = true; 749 750 Opts.DiagnosticLogFile = Args.getLastArgValue(OPT_diagnostic_log_file); 751 if (Arg *A = 752 Args.getLastArg(OPT_diagnostic_serialized_file, OPT__serialize_diags)) 753 Opts.DiagnosticSerializationFile = A->getValue(); 754 Opts.IgnoreWarnings = Args.hasArg(OPT_w); 755 Opts.NoRewriteMacros = Args.hasArg(OPT_Wno_rewrite_macros); 756 Opts.Pedantic = Args.hasArg(OPT_pedantic); 757 Opts.PedanticErrors = Args.hasArg(OPT_pedantic_errors); 758 Opts.ShowCarets = !Args.hasArg(OPT_fno_caret_diagnostics); 759 Opts.ShowColors = Args.hasArg(OPT_fcolor_diagnostics); 760 Opts.ShowColumn = Args.hasFlag(OPT_fshow_column, 761 OPT_fno_show_column, 762 /*Default=*/true); 763 Opts.ShowFixits = !Args.hasArg(OPT_fno_diagnostics_fixit_info); 764 Opts.ShowLocation = !Args.hasArg(OPT_fno_show_source_location); 765 Opts.ShowOptionNames = Args.hasArg(OPT_fdiagnostics_show_option); 766 767 llvm::sys::Process::UseANSIEscapeCodes(Args.hasArg(OPT_fansi_escape_codes)); 768 769 // Default behavior is to not to show note include stacks. 770 Opts.ShowNoteIncludeStack = false; 771 if (Arg *A = Args.getLastArg(OPT_fdiagnostics_show_note_include_stack, 772 OPT_fno_diagnostics_show_note_include_stack)) 773 if (A->getOption().matches(OPT_fdiagnostics_show_note_include_stack)) 774 Opts.ShowNoteIncludeStack = true; 775 776 StringRef ShowOverloads = 777 Args.getLastArgValue(OPT_fshow_overloads_EQ, "all"); 778 if (ShowOverloads == "best") 779 Opts.setShowOverloads(Ovl_Best); 780 else if (ShowOverloads == "all") 781 Opts.setShowOverloads(Ovl_All); 782 else { 783 Success = false; 784 if (Diags) 785 Diags->Report(diag::err_drv_invalid_value) 786 << Args.getLastArg(OPT_fshow_overloads_EQ)->getAsString(Args) 787 << ShowOverloads; 788 } 789 790 StringRef ShowCategory = 791 Args.getLastArgValue(OPT_fdiagnostics_show_category, "none"); 792 if (ShowCategory == "none") 793 Opts.ShowCategories = 0; 794 else if (ShowCategory == "id") 795 Opts.ShowCategories = 1; 796 else if (ShowCategory == "name") 797 Opts.ShowCategories = 2; 798 else { 799 Success = false; 800 if (Diags) 801 Diags->Report(diag::err_drv_invalid_value) 802 << Args.getLastArg(OPT_fdiagnostics_show_category)->getAsString(Args) 803 << ShowCategory; 804 } 805 806 StringRef Format = 807 Args.getLastArgValue(OPT_fdiagnostics_format, "clang"); 808 if (Format == "clang") 809 Opts.setFormat(DiagnosticOptions::Clang); 810 else if (Format == "msvc") 811 Opts.setFormat(DiagnosticOptions::MSVC); 812 else if (Format == "msvc-fallback") { 813 Opts.setFormat(DiagnosticOptions::MSVC); 814 Opts.CLFallbackMode = true; 815 } else if (Format == "vi") 816 Opts.setFormat(DiagnosticOptions::Vi); 817 else { 818 Success = false; 819 if (Diags) 820 Diags->Report(diag::err_drv_invalid_value) 821 << Args.getLastArg(OPT_fdiagnostics_format)->getAsString(Args) 822 << Format; 823 } 824 825 Opts.ShowSourceRanges = Args.hasArg(OPT_fdiagnostics_print_source_range_info); 826 Opts.ShowParseableFixits = Args.hasArg(OPT_fdiagnostics_parseable_fixits); 827 Opts.ShowPresumedLoc = !Args.hasArg(OPT_fno_diagnostics_use_presumed_location); 828 Opts.VerifyDiagnostics = Args.hasArg(OPT_verify); 829 DiagnosticLevelMask DiagMask = DiagnosticLevelMask::None; 830 Success &= parseDiagnosticLevelMask("-verify-ignore-unexpected=", 831 Args.getAllArgValues(OPT_verify_ignore_unexpected_EQ), 832 Diags, DiagMask); 833 if (Args.hasArg(OPT_verify_ignore_unexpected)) 834 DiagMask = DiagnosticLevelMask::All; 835 Opts.setVerifyIgnoreUnexpected(DiagMask); 836 Opts.ElideType = !Args.hasArg(OPT_fno_elide_type); 837 Opts.ShowTemplateTree = Args.hasArg(OPT_fdiagnostics_show_template_tree); 838 Opts.ErrorLimit = getLastArgIntValue(Args, OPT_ferror_limit, 0, Diags); 839 Opts.MacroBacktraceLimit = 840 getLastArgIntValue(Args, OPT_fmacro_backtrace_limit, 841 DiagnosticOptions::DefaultMacroBacktraceLimit, Diags); 842 Opts.TemplateBacktraceLimit = getLastArgIntValue( 843 Args, OPT_ftemplate_backtrace_limit, 844 DiagnosticOptions::DefaultTemplateBacktraceLimit, Diags); 845 Opts.ConstexprBacktraceLimit = getLastArgIntValue( 846 Args, OPT_fconstexpr_backtrace_limit, 847 DiagnosticOptions::DefaultConstexprBacktraceLimit, Diags); 848 Opts.SpellCheckingLimit = getLastArgIntValue( 849 Args, OPT_fspell_checking_limit, 850 DiagnosticOptions::DefaultSpellCheckingLimit, Diags); 851 Opts.TabStop = getLastArgIntValue(Args, OPT_ftabstop, 852 DiagnosticOptions::DefaultTabStop, Diags); 853 if (Opts.TabStop == 0 || Opts.TabStop > DiagnosticOptions::MaxTabStop) { 854 Opts.TabStop = DiagnosticOptions::DefaultTabStop; 855 if (Diags) 856 Diags->Report(diag::warn_ignoring_ftabstop_value) 857 << Opts.TabStop << DiagnosticOptions::DefaultTabStop; 858 } 859 Opts.MessageLength = getLastArgIntValue(Args, OPT_fmessage_length, 0, Diags); 860 addDiagnosticArgs(Args, OPT_W_Group, OPT_W_value_Group, Opts.Warnings); 861 addDiagnosticArgs(Args, OPT_R_Group, OPT_R_value_Group, Opts.Remarks); 862 863 return Success; 864 } 865 866 static void ParseFileSystemArgs(FileSystemOptions &Opts, ArgList &Args) { 867 Opts.WorkingDir = Args.getLastArgValue(OPT_working_directory); 868 } 869 870 /// Parse the argument to the -ftest-module-file-extension 871 /// command-line argument. 872 /// 873 /// \returns true on error, false on success. 874 static bool parseTestModuleFileExtensionArg(StringRef Arg, 875 std::string &BlockName, 876 unsigned &MajorVersion, 877 unsigned &MinorVersion, 878 bool &Hashed, 879 std::string &UserInfo) { 880 SmallVector<StringRef, 5> Args; 881 Arg.split(Args, ':', 5); 882 if (Args.size() < 5) 883 return true; 884 885 BlockName = Args[0]; 886 if (Args[1].getAsInteger(10, MajorVersion)) return true; 887 if (Args[2].getAsInteger(10, MinorVersion)) return true; 888 if (Args[3].getAsInteger(2, Hashed)) return true; 889 if (Args.size() > 4) 890 UserInfo = Args[4]; 891 return false; 892 } 893 894 static InputKind ParseFrontendArgs(FrontendOptions &Opts, ArgList &Args, 895 DiagnosticsEngine &Diags) { 896 using namespace options; 897 Opts.ProgramAction = frontend::ParseSyntaxOnly; 898 if (const Arg *A = Args.getLastArg(OPT_Action_Group)) { 899 switch (A->getOption().getID()) { 900 default: 901 llvm_unreachable("Invalid option in group!"); 902 case OPT_ast_list: 903 Opts.ProgramAction = frontend::ASTDeclList; break; 904 case OPT_ast_dump: 905 case OPT_ast_dump_lookups: 906 Opts.ProgramAction = frontend::ASTDump; break; 907 case OPT_ast_print: 908 Opts.ProgramAction = frontend::ASTPrint; break; 909 case OPT_ast_view: 910 Opts.ProgramAction = frontend::ASTView; break; 911 case OPT_dump_raw_tokens: 912 Opts.ProgramAction = frontend::DumpRawTokens; break; 913 case OPT_dump_tokens: 914 Opts.ProgramAction = frontend::DumpTokens; break; 915 case OPT_S: 916 Opts.ProgramAction = frontend::EmitAssembly; break; 917 case OPT_emit_llvm_bc: 918 Opts.ProgramAction = frontend::EmitBC; break; 919 case OPT_emit_html: 920 Opts.ProgramAction = frontend::EmitHTML; break; 921 case OPT_emit_llvm: 922 Opts.ProgramAction = frontend::EmitLLVM; break; 923 case OPT_emit_llvm_only: 924 Opts.ProgramAction = frontend::EmitLLVMOnly; break; 925 case OPT_emit_codegen_only: 926 Opts.ProgramAction = frontend::EmitCodeGenOnly; break; 927 case OPT_emit_obj: 928 Opts.ProgramAction = frontend::EmitObj; break; 929 case OPT_fixit_EQ: 930 Opts.FixItSuffix = A->getValue(); 931 // fall-through! 932 case OPT_fixit: 933 Opts.ProgramAction = frontend::FixIt; break; 934 case OPT_emit_module: 935 Opts.ProgramAction = frontend::GenerateModule; break; 936 case OPT_emit_pch: 937 Opts.ProgramAction = frontend::GeneratePCH; break; 938 case OPT_emit_pth: 939 Opts.ProgramAction = frontend::GeneratePTH; break; 940 case OPT_init_only: 941 Opts.ProgramAction = frontend::InitOnly; break; 942 case OPT_fsyntax_only: 943 Opts.ProgramAction = frontend::ParseSyntaxOnly; break; 944 case OPT_module_file_info: 945 Opts.ProgramAction = frontend::ModuleFileInfo; break; 946 case OPT_verify_pch: 947 Opts.ProgramAction = frontend::VerifyPCH; break; 948 case OPT_print_decl_contexts: 949 Opts.ProgramAction = frontend::PrintDeclContext; break; 950 case OPT_print_preamble: 951 Opts.ProgramAction = frontend::PrintPreamble; break; 952 case OPT_E: 953 Opts.ProgramAction = frontend::PrintPreprocessedInput; break; 954 case OPT_rewrite_macros: 955 Opts.ProgramAction = frontend::RewriteMacros; break; 956 case OPT_rewrite_objc: 957 Opts.ProgramAction = frontend::RewriteObjC; break; 958 case OPT_rewrite_test: 959 Opts.ProgramAction = frontend::RewriteTest; break; 960 case OPT_analyze: 961 Opts.ProgramAction = frontend::RunAnalysis; break; 962 case OPT_migrate: 963 Opts.ProgramAction = frontend::MigrateSource; break; 964 case OPT_Eonly: 965 Opts.ProgramAction = frontend::RunPreprocessorOnly; break; 966 } 967 } 968 969 if (const Arg* A = Args.getLastArg(OPT_plugin)) { 970 Opts.Plugins.emplace_back(A->getValue(0)); 971 Opts.ProgramAction = frontend::PluginAction; 972 Opts.ActionName = A->getValue(); 973 974 for (const Arg *AA : Args.filtered(OPT_plugin_arg)) 975 if (AA->getValue(0) == Opts.ActionName) 976 Opts.PluginArgs.emplace_back(AA->getValue(1)); 977 } 978 979 Opts.AddPluginActions = Args.getAllArgValues(OPT_add_plugin); 980 Opts.AddPluginArgs.resize(Opts.AddPluginActions.size()); 981 for (int i = 0, e = Opts.AddPluginActions.size(); i != e; ++i) 982 for (const Arg *A : Args.filtered(OPT_plugin_arg)) 983 if (A->getValue(0) == Opts.AddPluginActions[i]) 984 Opts.AddPluginArgs[i].emplace_back(A->getValue(1)); 985 986 for (const std::string &Arg : 987 Args.getAllArgValues(OPT_ftest_module_file_extension_EQ)) { 988 std::string BlockName; 989 unsigned MajorVersion; 990 unsigned MinorVersion; 991 bool Hashed; 992 std::string UserInfo; 993 if (parseTestModuleFileExtensionArg(Arg, BlockName, MajorVersion, 994 MinorVersion, Hashed, UserInfo)) { 995 Diags.Report(diag::err_test_module_file_extension_format) << Arg; 996 997 continue; 998 } 999 1000 // Add the testing module file extension. 1001 Opts.ModuleFileExtensions.push_back( 1002 new TestModuleFileExtension(BlockName, MajorVersion, MinorVersion, 1003 Hashed, UserInfo)); 1004 } 1005 1006 if (const Arg *A = Args.getLastArg(OPT_code_completion_at)) { 1007 Opts.CodeCompletionAt = 1008 ParsedSourceLocation::FromString(A->getValue()); 1009 if (Opts.CodeCompletionAt.FileName.empty()) 1010 Diags.Report(diag::err_drv_invalid_value) 1011 << A->getAsString(Args) << A->getValue(); 1012 } 1013 Opts.DisableFree = Args.hasArg(OPT_disable_free); 1014 1015 Opts.OutputFile = Args.getLastArgValue(OPT_o); 1016 Opts.Plugins = Args.getAllArgValues(OPT_load); 1017 Opts.RelocatablePCH = Args.hasArg(OPT_relocatable_pch); 1018 Opts.ShowHelp = Args.hasArg(OPT_help); 1019 Opts.ShowStats = Args.hasArg(OPT_print_stats); 1020 Opts.ShowTimers = Args.hasArg(OPT_ftime_report); 1021 Opts.ShowVersion = Args.hasArg(OPT_version); 1022 Opts.ASTMergeFiles = Args.getAllArgValues(OPT_ast_merge); 1023 Opts.LLVMArgs = Args.getAllArgValues(OPT_mllvm); 1024 Opts.FixWhatYouCan = Args.hasArg(OPT_fix_what_you_can); 1025 Opts.FixOnlyWarnings = Args.hasArg(OPT_fix_only_warnings); 1026 Opts.FixAndRecompile = Args.hasArg(OPT_fixit_recompile); 1027 Opts.FixToTemporaries = Args.hasArg(OPT_fixit_to_temp); 1028 Opts.ASTDumpDecls = Args.hasArg(OPT_ast_dump); 1029 Opts.ASTDumpFilter = Args.getLastArgValue(OPT_ast_dump_filter); 1030 Opts.ASTDumpLookups = Args.hasArg(OPT_ast_dump_lookups); 1031 Opts.UseGlobalModuleIndex = !Args.hasArg(OPT_fno_modules_global_index); 1032 Opts.GenerateGlobalModuleIndex = Opts.UseGlobalModuleIndex; 1033 Opts.ModuleMapFiles = Args.getAllArgValues(OPT_fmodule_map_file); 1034 Opts.ModuleFiles = Args.getAllArgValues(OPT_fmodule_file); 1035 Opts.ModulesEmbedFiles = Args.getAllArgValues(OPT_fmodules_embed_file_EQ); 1036 Opts.ModulesEmbedAllFiles = Args.hasArg(OPT_fmodules_embed_all_files); 1037 1038 Opts.CodeCompleteOpts.IncludeMacros 1039 = Args.hasArg(OPT_code_completion_macros); 1040 Opts.CodeCompleteOpts.IncludeCodePatterns 1041 = Args.hasArg(OPT_code_completion_patterns); 1042 Opts.CodeCompleteOpts.IncludeGlobals 1043 = !Args.hasArg(OPT_no_code_completion_globals); 1044 Opts.CodeCompleteOpts.IncludeBriefComments 1045 = Args.hasArg(OPT_code_completion_brief_comments); 1046 1047 Opts.OverrideRecordLayoutsFile 1048 = Args.getLastArgValue(OPT_foverride_record_layout_EQ); 1049 Opts.AuxTriple = 1050 llvm::Triple::normalize(Args.getLastArgValue(OPT_aux_triple)); 1051 1052 if (const Arg *A = Args.getLastArg(OPT_arcmt_check, 1053 OPT_arcmt_modify, 1054 OPT_arcmt_migrate)) { 1055 switch (A->getOption().getID()) { 1056 default: 1057 llvm_unreachable("missed a case"); 1058 case OPT_arcmt_check: 1059 Opts.ARCMTAction = FrontendOptions::ARCMT_Check; 1060 break; 1061 case OPT_arcmt_modify: 1062 Opts.ARCMTAction = FrontendOptions::ARCMT_Modify; 1063 break; 1064 case OPT_arcmt_migrate: 1065 Opts.ARCMTAction = FrontendOptions::ARCMT_Migrate; 1066 break; 1067 } 1068 } 1069 Opts.MTMigrateDir = Args.getLastArgValue(OPT_mt_migrate_directory); 1070 Opts.ARCMTMigrateReportOut 1071 = Args.getLastArgValue(OPT_arcmt_migrate_report_output); 1072 Opts.ARCMTMigrateEmitARCErrors 1073 = Args.hasArg(OPT_arcmt_migrate_emit_arc_errors); 1074 1075 if (Args.hasArg(OPT_objcmt_migrate_literals)) 1076 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_Literals; 1077 if (Args.hasArg(OPT_objcmt_migrate_subscripting)) 1078 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_Subscripting; 1079 if (Args.hasArg(OPT_objcmt_migrate_property_dot_syntax)) 1080 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_PropertyDotSyntax; 1081 if (Args.hasArg(OPT_objcmt_migrate_property)) 1082 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_Property; 1083 if (Args.hasArg(OPT_objcmt_migrate_readonly_property)) 1084 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_ReadonlyProperty; 1085 if (Args.hasArg(OPT_objcmt_migrate_readwrite_property)) 1086 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_ReadwriteProperty; 1087 if (Args.hasArg(OPT_objcmt_migrate_annotation)) 1088 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_Annotation; 1089 if (Args.hasArg(OPT_objcmt_returns_innerpointer_property)) 1090 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_ReturnsInnerPointerProperty; 1091 if (Args.hasArg(OPT_objcmt_migrate_instancetype)) 1092 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_Instancetype; 1093 if (Args.hasArg(OPT_objcmt_migrate_nsmacros)) 1094 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_NsMacros; 1095 if (Args.hasArg(OPT_objcmt_migrate_protocol_conformance)) 1096 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_ProtocolConformance; 1097 if (Args.hasArg(OPT_objcmt_atomic_property)) 1098 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_AtomicProperty; 1099 if (Args.hasArg(OPT_objcmt_ns_nonatomic_iosonly)) 1100 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_NsAtomicIOSOnlyProperty; 1101 if (Args.hasArg(OPT_objcmt_migrate_designated_init)) 1102 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_DesignatedInitializer; 1103 if (Args.hasArg(OPT_objcmt_migrate_all)) 1104 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_MigrateDecls; 1105 1106 Opts.ObjCMTWhiteListPath = Args.getLastArgValue(OPT_objcmt_whitelist_dir_path); 1107 1108 if (Opts.ARCMTAction != FrontendOptions::ARCMT_None && 1109 Opts.ObjCMTAction != FrontendOptions::ObjCMT_None) { 1110 Diags.Report(diag::err_drv_argument_not_allowed_with) 1111 << "ARC migration" << "ObjC migration"; 1112 } 1113 1114 InputKind DashX = IK_None; 1115 if (const Arg *A = Args.getLastArg(OPT_x)) { 1116 DashX = llvm::StringSwitch<InputKind>(A->getValue()) 1117 .Case("c", IK_C) 1118 .Case("cl", IK_OpenCL) 1119 .Case("cuda", IK_CUDA) 1120 .Case("c++", IK_CXX) 1121 .Case("objective-c", IK_ObjC) 1122 .Case("objective-c++", IK_ObjCXX) 1123 .Case("cpp-output", IK_PreprocessedC) 1124 .Case("assembler-with-cpp", IK_Asm) 1125 .Case("c++-cpp-output", IK_PreprocessedCXX) 1126 .Case("cuda-cpp-output", IK_PreprocessedCuda) 1127 .Case("objective-c-cpp-output", IK_PreprocessedObjC) 1128 .Case("objc-cpp-output", IK_PreprocessedObjC) 1129 .Case("objective-c++-cpp-output", IK_PreprocessedObjCXX) 1130 .Case("objc++-cpp-output", IK_PreprocessedObjCXX) 1131 .Case("c-header", IK_C) 1132 .Case("cl-header", IK_OpenCL) 1133 .Case("objective-c-header", IK_ObjC) 1134 .Case("c++-header", IK_CXX) 1135 .Case("objective-c++-header", IK_ObjCXX) 1136 .Cases("ast", "pcm", IK_AST) 1137 .Case("ir", IK_LLVM_IR) 1138 .Default(IK_None); 1139 if (DashX == IK_None) 1140 Diags.Report(diag::err_drv_invalid_value) 1141 << A->getAsString(Args) << A->getValue(); 1142 } 1143 1144 // '-' is the default input if none is given. 1145 std::vector<std::string> Inputs = Args.getAllArgValues(OPT_INPUT); 1146 Opts.Inputs.clear(); 1147 if (Inputs.empty()) 1148 Inputs.push_back("-"); 1149 for (unsigned i = 0, e = Inputs.size(); i != e; ++i) { 1150 InputKind IK = DashX; 1151 if (IK == IK_None) { 1152 IK = FrontendOptions::getInputKindForExtension( 1153 StringRef(Inputs[i]).rsplit('.').second); 1154 // FIXME: Remove this hack. 1155 if (i == 0) 1156 DashX = IK; 1157 } 1158 Opts.Inputs.emplace_back(std::move(Inputs[i]), IK); 1159 } 1160 1161 return DashX; 1162 } 1163 1164 std::string CompilerInvocation::GetResourcesPath(const char *Argv0, 1165 void *MainAddr) { 1166 std::string ClangExecutable = 1167 llvm::sys::fs::getMainExecutable(Argv0, MainAddr); 1168 StringRef Dir = llvm::sys::path::parent_path(ClangExecutable); 1169 1170 // Compute the path to the resource directory. 1171 StringRef ClangResourceDir(CLANG_RESOURCE_DIR); 1172 SmallString<128> P(Dir); 1173 if (ClangResourceDir != "") 1174 llvm::sys::path::append(P, ClangResourceDir); 1175 else 1176 llvm::sys::path::append(P, "..", Twine("lib") + CLANG_LIBDIR_SUFFIX, 1177 "clang", CLANG_VERSION_STRING); 1178 1179 return P.str(); 1180 } 1181 1182 static void ParseHeaderSearchArgs(HeaderSearchOptions &Opts, ArgList &Args) { 1183 using namespace options; 1184 Opts.Sysroot = Args.getLastArgValue(OPT_isysroot, "/"); 1185 Opts.Verbose = Args.hasArg(OPT_v); 1186 Opts.UseBuiltinIncludes = !Args.hasArg(OPT_nobuiltininc); 1187 Opts.UseStandardSystemIncludes = !Args.hasArg(OPT_nostdsysteminc); 1188 Opts.UseStandardCXXIncludes = !Args.hasArg(OPT_nostdincxx); 1189 if (const Arg *A = Args.getLastArg(OPT_stdlib_EQ)) 1190 Opts.UseLibcxx = (strcmp(A->getValue(), "libc++") == 0); 1191 Opts.ResourceDir = Args.getLastArgValue(OPT_resource_dir); 1192 Opts.ModuleCachePath = Args.getLastArgValue(OPT_fmodules_cache_path); 1193 Opts.ModuleUserBuildPath = Args.getLastArgValue(OPT_fmodules_user_build_path); 1194 Opts.DisableModuleHash = Args.hasArg(OPT_fdisable_module_hash); 1195 Opts.ImplicitModuleMaps = Args.hasArg(OPT_fimplicit_module_maps); 1196 Opts.ModuleMapFileHomeIsCwd = Args.hasArg(OPT_fmodule_map_file_home_is_cwd); 1197 Opts.ModuleCachePruneInterval = 1198 getLastArgIntValue(Args, OPT_fmodules_prune_interval, 7 * 24 * 60 * 60); 1199 Opts.ModuleCachePruneAfter = 1200 getLastArgIntValue(Args, OPT_fmodules_prune_after, 31 * 24 * 60 * 60); 1201 Opts.ModulesValidateOncePerBuildSession = 1202 Args.hasArg(OPT_fmodules_validate_once_per_build_session); 1203 Opts.BuildSessionTimestamp = 1204 getLastArgUInt64Value(Args, OPT_fbuild_session_timestamp, 0); 1205 Opts.ModulesValidateSystemHeaders = 1206 Args.hasArg(OPT_fmodules_validate_system_headers); 1207 if (const Arg *A = Args.getLastArg(OPT_fmodule_format_EQ)) 1208 Opts.ModuleFormat = A->getValue(); 1209 1210 for (const Arg *A : Args.filtered(OPT_fmodules_ignore_macro)) { 1211 StringRef MacroDef = A->getValue(); 1212 Opts.ModulesIgnoreMacros.insert(MacroDef.split('=').first); 1213 } 1214 1215 // Add -I..., -F..., and -index-header-map options in order. 1216 bool IsIndexHeaderMap = false; 1217 for (const Arg *A : Args.filtered(OPT_I, OPT_F, OPT_index_header_map)) { 1218 if (A->getOption().matches(OPT_index_header_map)) { 1219 // -index-header-map applies to the next -I or -F. 1220 IsIndexHeaderMap = true; 1221 continue; 1222 } 1223 1224 frontend::IncludeDirGroup Group = 1225 IsIndexHeaderMap ? frontend::IndexHeaderMap : frontend::Angled; 1226 1227 Opts.AddPath(A->getValue(), Group, 1228 /*IsFramework=*/A->getOption().matches(OPT_F), true); 1229 IsIndexHeaderMap = false; 1230 } 1231 1232 // Add -iprefix/-iwithprefix/-iwithprefixbefore options. 1233 StringRef Prefix = ""; // FIXME: This isn't the correct default prefix. 1234 for (const Arg *A : 1235 Args.filtered(OPT_iprefix, OPT_iwithprefix, OPT_iwithprefixbefore)) { 1236 if (A->getOption().matches(OPT_iprefix)) 1237 Prefix = A->getValue(); 1238 else if (A->getOption().matches(OPT_iwithprefix)) 1239 Opts.AddPath(Prefix.str() + A->getValue(), frontend::After, false, true); 1240 else 1241 Opts.AddPath(Prefix.str() + A->getValue(), frontend::Angled, false, true); 1242 } 1243 1244 for (const Arg *A : Args.filtered(OPT_idirafter)) 1245 Opts.AddPath(A->getValue(), frontend::After, false, true); 1246 for (const Arg *A : Args.filtered(OPT_iquote)) 1247 Opts.AddPath(A->getValue(), frontend::Quoted, false, true); 1248 for (const Arg *A : Args.filtered(OPT_isystem, OPT_iwithsysroot)) 1249 Opts.AddPath(A->getValue(), frontend::System, false, 1250 !A->getOption().matches(OPT_iwithsysroot)); 1251 for (const Arg *A : Args.filtered(OPT_iframework)) 1252 Opts.AddPath(A->getValue(), frontend::System, true, true); 1253 1254 // Add the paths for the various language specific isystem flags. 1255 for (const Arg *A : Args.filtered(OPT_c_isystem)) 1256 Opts.AddPath(A->getValue(), frontend::CSystem, false, true); 1257 for (const Arg *A : Args.filtered(OPT_cxx_isystem)) 1258 Opts.AddPath(A->getValue(), frontend::CXXSystem, false, true); 1259 for (const Arg *A : Args.filtered(OPT_objc_isystem)) 1260 Opts.AddPath(A->getValue(), frontend::ObjCSystem, false,true); 1261 for (const Arg *A : Args.filtered(OPT_objcxx_isystem)) 1262 Opts.AddPath(A->getValue(), frontend::ObjCXXSystem, false, true); 1263 1264 // Add the internal paths from a driver that detects standard include paths. 1265 for (const Arg *A : 1266 Args.filtered(OPT_internal_isystem, OPT_internal_externc_isystem)) { 1267 frontend::IncludeDirGroup Group = frontend::System; 1268 if (A->getOption().matches(OPT_internal_externc_isystem)) 1269 Group = frontend::ExternCSystem; 1270 Opts.AddPath(A->getValue(), Group, false, true); 1271 } 1272 1273 // Add the path prefixes which are implicitly treated as being system headers. 1274 for (const Arg *A : 1275 Args.filtered(OPT_system_header_prefix, OPT_no_system_header_prefix)) 1276 Opts.AddSystemHeaderPrefix( 1277 A->getValue(), A->getOption().matches(OPT_system_header_prefix)); 1278 1279 for (const Arg *A : Args.filtered(OPT_ivfsoverlay)) 1280 Opts.AddVFSOverlayFile(A->getValue()); 1281 } 1282 1283 void CompilerInvocation::setLangDefaults(LangOptions &Opts, InputKind IK, 1284 LangStandard::Kind LangStd) { 1285 // Set some properties which depend solely on the input kind; it would be nice 1286 // to move these to the language standard, and have the driver resolve the 1287 // input kind + language standard. 1288 if (IK == IK_Asm) { 1289 Opts.AsmPreprocessor = 1; 1290 } else if (IK == IK_ObjC || 1291 IK == IK_ObjCXX || 1292 IK == IK_PreprocessedObjC || 1293 IK == IK_PreprocessedObjCXX) { 1294 Opts.ObjC1 = Opts.ObjC2 = 1; 1295 } 1296 1297 if (LangStd == LangStandard::lang_unspecified) { 1298 // Based on the base language, pick one. 1299 switch (IK) { 1300 case IK_None: 1301 case IK_AST: 1302 case IK_LLVM_IR: 1303 llvm_unreachable("Invalid input kind!"); 1304 case IK_OpenCL: 1305 LangStd = LangStandard::lang_opencl; 1306 break; 1307 case IK_CUDA: 1308 case IK_PreprocessedCuda: 1309 LangStd = LangStandard::lang_cuda; 1310 break; 1311 case IK_Asm: 1312 case IK_C: 1313 case IK_PreprocessedC: 1314 case IK_ObjC: 1315 case IK_PreprocessedObjC: 1316 LangStd = LangStandard::lang_gnu11; 1317 break; 1318 case IK_CXX: 1319 case IK_PreprocessedCXX: 1320 case IK_ObjCXX: 1321 case IK_PreprocessedObjCXX: 1322 LangStd = LangStandard::lang_gnucxx98; 1323 break; 1324 } 1325 } 1326 1327 const LangStandard &Std = LangStandard::getLangStandardForKind(LangStd); 1328 Opts.LineComment = Std.hasLineComments(); 1329 Opts.C99 = Std.isC99(); 1330 Opts.C11 = Std.isC11(); 1331 Opts.CPlusPlus = Std.isCPlusPlus(); 1332 Opts.CPlusPlus11 = Std.isCPlusPlus11(); 1333 Opts.CPlusPlus14 = Std.isCPlusPlus14(); 1334 Opts.CPlusPlus1z = Std.isCPlusPlus1z(); 1335 Opts.Digraphs = Std.hasDigraphs(); 1336 Opts.GNUMode = Std.isGNUMode(); 1337 Opts.GNUInline = Std.isC89(); 1338 Opts.HexFloats = Std.hasHexFloats(); 1339 Opts.ImplicitInt = Std.hasImplicitInt(); 1340 1341 // Set OpenCL Version. 1342 Opts.OpenCL = LangStd == LangStandard::lang_opencl || IK == IK_OpenCL; 1343 if (LangStd == LangStandard::lang_opencl) 1344 Opts.OpenCLVersion = 100; 1345 else if (LangStd == LangStandard::lang_opencl11) 1346 Opts.OpenCLVersion = 110; 1347 else if (LangStd == LangStandard::lang_opencl12) 1348 Opts.OpenCLVersion = 120; 1349 else if (LangStd == LangStandard::lang_opencl20) 1350 Opts.OpenCLVersion = 200; 1351 1352 // OpenCL has some additional defaults. 1353 if (Opts.OpenCL) { 1354 Opts.AltiVec = 0; 1355 Opts.ZVector = 0; 1356 Opts.CXXOperatorNames = 1; 1357 Opts.LaxVectorConversions = 0; 1358 Opts.DefaultFPContract = 1; 1359 Opts.NativeHalfType = 1; 1360 } 1361 1362 Opts.CUDA = IK == IK_CUDA || IK == IK_PreprocessedCuda || 1363 LangStd == LangStandard::lang_cuda; 1364 1365 // OpenCL and C++ both have bool, true, false keywords. 1366 Opts.Bool = Opts.OpenCL || Opts.CPlusPlus; 1367 1368 // OpenCL has half keyword 1369 Opts.Half = Opts.OpenCL; 1370 1371 // C++ has wchar_t keyword. 1372 Opts.WChar = Opts.CPlusPlus; 1373 1374 Opts.GNUKeywords = Opts.GNUMode; 1375 Opts.CXXOperatorNames = Opts.CPlusPlus; 1376 1377 Opts.DollarIdents = !Opts.AsmPreprocessor; 1378 } 1379 1380 /// Attempt to parse a visibility value out of the given argument. 1381 static Visibility parseVisibility(Arg *arg, ArgList &args, 1382 DiagnosticsEngine &diags) { 1383 StringRef value = arg->getValue(); 1384 if (value == "default") { 1385 return DefaultVisibility; 1386 } else if (value == "hidden" || value == "internal") { 1387 return HiddenVisibility; 1388 } else if (value == "protected") { 1389 // FIXME: diagnose if target does not support protected visibility 1390 return ProtectedVisibility; 1391 } 1392 1393 diags.Report(diag::err_drv_invalid_value) 1394 << arg->getAsString(args) << value; 1395 return DefaultVisibility; 1396 } 1397 1398 static void ParseLangArgs(LangOptions &Opts, ArgList &Args, InputKind IK, 1399 DiagnosticsEngine &Diags) { 1400 // FIXME: Cleanup per-file based stuff. 1401 LangStandard::Kind LangStd = LangStandard::lang_unspecified; 1402 if (const Arg *A = Args.getLastArg(OPT_std_EQ)) { 1403 LangStd = llvm::StringSwitch<LangStandard::Kind>(A->getValue()) 1404 #define LANGSTANDARD(id, name, desc, features) \ 1405 .Case(name, LangStandard::lang_##id) 1406 #include "clang/Frontend/LangStandards.def" 1407 .Default(LangStandard::lang_unspecified); 1408 if (LangStd == LangStandard::lang_unspecified) 1409 Diags.Report(diag::err_drv_invalid_value) 1410 << A->getAsString(Args) << A->getValue(); 1411 else { 1412 // Valid standard, check to make sure language and standard are 1413 // compatible. 1414 const LangStandard &Std = LangStandard::getLangStandardForKind(LangStd); 1415 switch (IK) { 1416 case IK_C: 1417 case IK_ObjC: 1418 case IK_PreprocessedC: 1419 case IK_PreprocessedObjC: 1420 if (!(Std.isC89() || Std.isC99())) 1421 Diags.Report(diag::err_drv_argument_not_allowed_with) 1422 << A->getAsString(Args) << "C/ObjC"; 1423 break; 1424 case IK_CXX: 1425 case IK_ObjCXX: 1426 case IK_PreprocessedCXX: 1427 case IK_PreprocessedObjCXX: 1428 if (!Std.isCPlusPlus()) 1429 Diags.Report(diag::err_drv_argument_not_allowed_with) 1430 << A->getAsString(Args) << "C++/ObjC++"; 1431 break; 1432 case IK_OpenCL: 1433 if (!Std.isC99()) 1434 Diags.Report(diag::err_drv_argument_not_allowed_with) 1435 << A->getAsString(Args) << "OpenCL"; 1436 break; 1437 case IK_CUDA: 1438 case IK_PreprocessedCuda: 1439 if (!Std.isCPlusPlus()) 1440 Diags.Report(diag::err_drv_argument_not_allowed_with) 1441 << A->getAsString(Args) << "CUDA"; 1442 break; 1443 default: 1444 break; 1445 } 1446 } 1447 } 1448 1449 // -cl-std only applies for OpenCL language standards. 1450 // Override the -std option in this case. 1451 if (const Arg *A = Args.getLastArg(OPT_cl_std_EQ)) { 1452 LangStandard::Kind OpenCLLangStd 1453 = llvm::StringSwitch<LangStandard::Kind>(A->getValue()) 1454 .Case("CL", LangStandard::lang_opencl) 1455 .Case("CL1.1", LangStandard::lang_opencl11) 1456 .Case("CL1.2", LangStandard::lang_opencl12) 1457 .Case("CL2.0", LangStandard::lang_opencl20) 1458 .Default(LangStandard::lang_unspecified); 1459 1460 if (OpenCLLangStd == LangStandard::lang_unspecified) { 1461 Diags.Report(diag::err_drv_invalid_value) 1462 << A->getAsString(Args) << A->getValue(); 1463 } 1464 else 1465 LangStd = OpenCLLangStd; 1466 } 1467 1468 CompilerInvocation::setLangDefaults(Opts, IK, LangStd); 1469 1470 // We abuse '-f[no-]gnu-keywords' to force overriding all GNU-extension 1471 // keywords. This behavior is provided by GCC's poorly named '-fasm' flag, 1472 // while a subset (the non-C++ GNU keywords) is provided by GCC's 1473 // '-fgnu-keywords'. Clang conflates the two for simplicity under the single 1474 // name, as it doesn't seem a useful distinction. 1475 Opts.GNUKeywords = Args.hasFlag(OPT_fgnu_keywords, OPT_fno_gnu_keywords, 1476 Opts.GNUKeywords); 1477 1478 if (Args.hasArg(OPT_fno_operator_names)) 1479 Opts.CXXOperatorNames = 0; 1480 1481 if (Args.hasArg(OPT_fcuda_is_device)) 1482 Opts.CUDAIsDevice = 1; 1483 1484 if (Args.hasArg(OPT_fcuda_allow_host_calls_from_host_device)) 1485 Opts.CUDAAllowHostCallsFromHostDevice = 1; 1486 1487 if (Args.hasArg(OPT_fcuda_disable_target_call_checks)) 1488 Opts.CUDADisableTargetCallChecks = 1; 1489 1490 if (Args.hasArg(OPT_fcuda_target_overloads)) 1491 Opts.CUDATargetOverloads = 1; 1492 1493 if (Opts.ObjC1) { 1494 if (Arg *arg = Args.getLastArg(OPT_fobjc_runtime_EQ)) { 1495 StringRef value = arg->getValue(); 1496 if (Opts.ObjCRuntime.tryParse(value)) 1497 Diags.Report(diag::err_drv_unknown_objc_runtime) << value; 1498 } 1499 1500 if (Args.hasArg(OPT_fobjc_gc_only)) 1501 Opts.setGC(LangOptions::GCOnly); 1502 else if (Args.hasArg(OPT_fobjc_gc)) 1503 Opts.setGC(LangOptions::HybridGC); 1504 else if (Args.hasArg(OPT_fobjc_arc)) { 1505 Opts.ObjCAutoRefCount = 1; 1506 if (!Opts.ObjCRuntime.allowsARC()) 1507 Diags.Report(diag::err_arc_unsupported_on_runtime); 1508 } 1509 1510 // ObjCWeakRuntime tracks whether the runtime supports __weak, not 1511 // whether the feature is actually enabled. This is predominantly 1512 // determined by -fobjc-runtime, but we allow it to be overridden 1513 // from the command line for testing purposes. 1514 if (Args.hasArg(OPT_fobjc_runtime_has_weak)) 1515 Opts.ObjCWeakRuntime = 1; 1516 else 1517 Opts.ObjCWeakRuntime = Opts.ObjCRuntime.allowsWeak(); 1518 1519 // ObjCWeak determines whether __weak is actually enabled. 1520 // Note that we allow -fno-objc-weak to disable this even in ARC mode. 1521 if (auto weakArg = Args.getLastArg(OPT_fobjc_weak, OPT_fno_objc_weak)) { 1522 if (!weakArg->getOption().matches(OPT_fobjc_weak)) { 1523 assert(!Opts.ObjCWeak); 1524 } else if (Opts.getGC() != LangOptions::NonGC) { 1525 Diags.Report(diag::err_objc_weak_with_gc); 1526 } else if (!Opts.ObjCWeakRuntime) { 1527 Diags.Report(diag::err_objc_weak_unsupported); 1528 } else { 1529 Opts.ObjCWeak = 1; 1530 } 1531 } else if (Opts.ObjCAutoRefCount) { 1532 Opts.ObjCWeak = Opts.ObjCWeakRuntime; 1533 } 1534 1535 if (Args.hasArg(OPT_fno_objc_infer_related_result_type)) 1536 Opts.ObjCInferRelatedResultType = 0; 1537 1538 if (Args.hasArg(OPT_fobjc_subscripting_legacy_runtime)) 1539 Opts.ObjCSubscriptingLegacyRuntime = 1540 (Opts.ObjCRuntime.getKind() == ObjCRuntime::FragileMacOSX); 1541 } 1542 1543 if (Args.hasArg(OPT_fgnu89_inline)) { 1544 if (Opts.CPlusPlus) 1545 Diags.Report(diag::err_drv_argument_not_allowed_with) << "-fgnu89-inline" 1546 << "C++/ObjC++"; 1547 else 1548 Opts.GNUInline = 1; 1549 } 1550 1551 if (Args.hasArg(OPT_fapple_kext)) { 1552 if (!Opts.CPlusPlus) 1553 Diags.Report(diag::warn_c_kext); 1554 else 1555 Opts.AppleKext = 1; 1556 } 1557 1558 if (Args.hasArg(OPT_print_ivar_layout)) 1559 Opts.ObjCGCBitmapPrint = 1; 1560 if (Args.hasArg(OPT_fno_constant_cfstrings)) 1561 Opts.NoConstantCFStrings = 1; 1562 1563 if (Args.hasArg(OPT_faltivec)) 1564 Opts.AltiVec = 1; 1565 1566 if (Args.hasArg(OPT_fzvector)) 1567 Opts.ZVector = 1; 1568 1569 if (Args.hasArg(OPT_pthread)) 1570 Opts.POSIXThreads = 1; 1571 1572 // The value-visibility mode defaults to "default". 1573 if (Arg *visOpt = Args.getLastArg(OPT_fvisibility)) { 1574 Opts.setValueVisibilityMode(parseVisibility(visOpt, Args, Diags)); 1575 } else { 1576 Opts.setValueVisibilityMode(DefaultVisibility); 1577 } 1578 1579 // The type-visibility mode defaults to the value-visibility mode. 1580 if (Arg *typeVisOpt = Args.getLastArg(OPT_ftype_visibility)) { 1581 Opts.setTypeVisibilityMode(parseVisibility(typeVisOpt, Args, Diags)); 1582 } else { 1583 Opts.setTypeVisibilityMode(Opts.getValueVisibilityMode()); 1584 } 1585 1586 if (Args.hasArg(OPT_fvisibility_inlines_hidden)) 1587 Opts.InlineVisibilityHidden = 1; 1588 1589 if (Args.hasArg(OPT_ftrapv)) { 1590 Opts.setSignedOverflowBehavior(LangOptions::SOB_Trapping); 1591 // Set the handler, if one is specified. 1592 Opts.OverflowHandler = 1593 Args.getLastArgValue(OPT_ftrapv_handler); 1594 } 1595 else if (Args.hasArg(OPT_fwrapv)) 1596 Opts.setSignedOverflowBehavior(LangOptions::SOB_Defined); 1597 1598 Opts.MSVCCompat = Args.hasArg(OPT_fms_compatibility); 1599 Opts.MicrosoftExt = Opts.MSVCCompat || Args.hasArg(OPT_fms_extensions); 1600 Opts.AsmBlocks = Args.hasArg(OPT_fasm_blocks) || Opts.MicrosoftExt; 1601 Opts.MSCompatibilityVersion = 0; 1602 if (const Arg *A = Args.getLastArg(OPT_fms_compatibility_version)) { 1603 VersionTuple VT; 1604 if (VT.tryParse(A->getValue())) 1605 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) 1606 << A->getValue(); 1607 Opts.MSCompatibilityVersion = VT.getMajor() * 10000000 + 1608 VT.getMinor().getValueOr(0) * 100000 + 1609 VT.getSubminor().getValueOr(0); 1610 } 1611 1612 // Mimicing gcc's behavior, trigraphs are only enabled if -trigraphs 1613 // is specified, or -std is set to a conforming mode. 1614 // Trigraphs are disabled by default in c++1z onwards. 1615 Opts.Trigraphs = !Opts.GNUMode && !Opts.MSVCCompat && !Opts.CPlusPlus1z; 1616 Opts.Trigraphs = 1617 Args.hasFlag(OPT_ftrigraphs, OPT_fno_trigraphs, Opts.Trigraphs); 1618 1619 Opts.DollarIdents = Args.hasFlag(OPT_fdollars_in_identifiers, 1620 OPT_fno_dollars_in_identifiers, 1621 Opts.DollarIdents); 1622 Opts.PascalStrings = Args.hasArg(OPT_fpascal_strings); 1623 Opts.VtorDispMode = getLastArgIntValue(Args, OPT_vtordisp_mode_EQ, 1, Diags); 1624 Opts.Borland = Args.hasArg(OPT_fborland_extensions); 1625 Opts.WritableStrings = Args.hasArg(OPT_fwritable_strings); 1626 Opts.ConstStrings = Args.hasFlag(OPT_fconst_strings, OPT_fno_const_strings, 1627 Opts.ConstStrings); 1628 if (Args.hasArg(OPT_fno_lax_vector_conversions)) 1629 Opts.LaxVectorConversions = 0; 1630 if (Args.hasArg(OPT_fno_threadsafe_statics)) 1631 Opts.ThreadsafeStatics = 0; 1632 Opts.Exceptions = Args.hasArg(OPT_fexceptions); 1633 Opts.ObjCExceptions = Args.hasArg(OPT_fobjc_exceptions); 1634 Opts.CXXExceptions = Args.hasArg(OPT_fcxx_exceptions); 1635 Opts.SjLjExceptions = Args.hasArg(OPT_fsjlj_exceptions); 1636 Opts.TraditionalCPP = Args.hasArg(OPT_traditional_cpp); 1637 1638 Opts.RTTI = !Args.hasArg(OPT_fno_rtti); 1639 Opts.RTTIData = Opts.RTTI && !Args.hasArg(OPT_fno_rtti_data); 1640 Opts.Blocks = Args.hasArg(OPT_fblocks); 1641 Opts.BlocksRuntimeOptional = Args.hasArg(OPT_fblocks_runtime_optional); 1642 Opts.Coroutines = Args.hasArg(OPT_fcoroutines); 1643 Opts.Modules = Args.hasArg(OPT_fmodules); 1644 Opts.ModulesStrictDeclUse = Args.hasArg(OPT_fmodules_strict_decluse); 1645 Opts.ModulesDeclUse = 1646 Args.hasArg(OPT_fmodules_decluse) || Opts.ModulesStrictDeclUse; 1647 Opts.ModulesLocalVisibility = 1648 Args.hasArg(OPT_fmodules_local_submodule_visibility); 1649 Opts.ModulesSearchAll = Opts.Modules && 1650 !Args.hasArg(OPT_fno_modules_search_all) && 1651 Args.hasArg(OPT_fmodules_search_all); 1652 Opts.ModulesErrorRecovery = !Args.hasArg(OPT_fno_modules_error_recovery); 1653 Opts.ImplicitModules = !Args.hasArg(OPT_fno_implicit_modules); 1654 Opts.CharIsSigned = Opts.OpenCL || !Args.hasArg(OPT_fno_signed_char); 1655 Opts.WChar = Opts.CPlusPlus && !Args.hasArg(OPT_fno_wchar); 1656 Opts.ShortWChar = Args.hasFlag(OPT_fshort_wchar, OPT_fno_short_wchar, false); 1657 Opts.ShortEnums = Args.hasArg(OPT_fshort_enums); 1658 Opts.Freestanding = Args.hasArg(OPT_ffreestanding); 1659 Opts.NoBuiltin = Args.hasArg(OPT_fno_builtin) || Opts.Freestanding; 1660 Opts.NoMathBuiltin = Args.hasArg(OPT_fno_math_builtin); 1661 Opts.AssumeSaneOperatorNew = !Args.hasArg(OPT_fno_assume_sane_operator_new); 1662 Opts.SizedDeallocation = Args.hasArg(OPT_fsized_deallocation); 1663 Opts.ConceptsTS = Args.hasArg(OPT_fconcepts_ts); 1664 Opts.HeinousExtensions = Args.hasArg(OPT_fheinous_gnu_extensions); 1665 Opts.AccessControl = !Args.hasArg(OPT_fno_access_control); 1666 Opts.ElideConstructors = !Args.hasArg(OPT_fno_elide_constructors); 1667 Opts.MathErrno = !Opts.OpenCL && Args.hasArg(OPT_fmath_errno); 1668 Opts.InstantiationDepth = 1669 getLastArgIntValue(Args, OPT_ftemplate_depth, 256, Diags); 1670 Opts.ArrowDepth = 1671 getLastArgIntValue(Args, OPT_foperator_arrow_depth, 256, Diags); 1672 Opts.ConstexprCallDepth = 1673 getLastArgIntValue(Args, OPT_fconstexpr_depth, 512, Diags); 1674 Opts.ConstexprStepLimit = 1675 getLastArgIntValue(Args, OPT_fconstexpr_steps, 1048576, Diags); 1676 Opts.BracketDepth = getLastArgIntValue(Args, OPT_fbracket_depth, 256, Diags); 1677 Opts.DelayedTemplateParsing = Args.hasArg(OPT_fdelayed_template_parsing); 1678 Opts.NumLargeByValueCopy = 1679 getLastArgIntValue(Args, OPT_Wlarge_by_value_copy_EQ, 0, Diags); 1680 Opts.MSBitfields = Args.hasArg(OPT_mms_bitfields); 1681 Opts.ObjCConstantStringClass = 1682 Args.getLastArgValue(OPT_fconstant_string_class); 1683 Opts.ObjCDefaultSynthProperties = 1684 !Args.hasArg(OPT_disable_objc_default_synthesize_properties); 1685 Opts.EncodeExtendedBlockSig = 1686 Args.hasArg(OPT_fencode_extended_block_signature); 1687 Opts.EmitAllDecls = Args.hasArg(OPT_femit_all_decls); 1688 Opts.PackStruct = getLastArgIntValue(Args, OPT_fpack_struct_EQ, 0, Diags); 1689 Opts.MaxTypeAlign = getLastArgIntValue(Args, OPT_fmax_type_align_EQ, 0, Diags); 1690 Opts.PICLevel = getLastArgIntValue(Args, OPT_pic_level, 0, Diags); 1691 Opts.PIELevel = getLastArgIntValue(Args, OPT_pie_level, 0, Diags); 1692 Opts.Static = Args.hasArg(OPT_static_define); 1693 Opts.DumpRecordLayoutsSimple = Args.hasArg(OPT_fdump_record_layouts_simple); 1694 Opts.DumpRecordLayouts = Opts.DumpRecordLayoutsSimple 1695 || Args.hasArg(OPT_fdump_record_layouts); 1696 Opts.DumpVTableLayouts = Args.hasArg(OPT_fdump_vtable_layouts); 1697 Opts.SpellChecking = !Args.hasArg(OPT_fno_spell_checking); 1698 Opts.NoBitFieldTypeAlign = Args.hasArg(OPT_fno_bitfield_type_align); 1699 Opts.SinglePrecisionConstants = Args.hasArg(OPT_cl_single_precision_constant); 1700 Opts.FastRelaxedMath = Args.hasArg(OPT_cl_fast_relaxed_math); 1701 Opts.MRTD = Args.hasArg(OPT_mrtd); 1702 Opts.HexagonQdsp6Compat = Args.hasArg(OPT_mqdsp6_compat); 1703 Opts.FakeAddressSpaceMap = Args.hasArg(OPT_ffake_address_space_map); 1704 Opts.ParseUnknownAnytype = Args.hasArg(OPT_funknown_anytype); 1705 Opts.DebuggerSupport = Args.hasArg(OPT_fdebugger_support); 1706 Opts.DebuggerCastResultToId = Args.hasArg(OPT_fdebugger_cast_result_to_id); 1707 Opts.DebuggerObjCLiteral = Args.hasArg(OPT_fdebugger_objc_literal); 1708 Opts.ApplePragmaPack = Args.hasArg(OPT_fapple_pragma_pack); 1709 Opts.CurrentModule = Args.getLastArgValue(OPT_fmodule_name); 1710 Opts.AppExt = Args.hasArg(OPT_fapplication_extension); 1711 Opts.ImplementationOfModule = 1712 Args.getLastArgValue(OPT_fmodule_implementation_of); 1713 Opts.ModuleFeatures = Args.getAllArgValues(OPT_fmodule_feature); 1714 std::sort(Opts.ModuleFeatures.begin(), Opts.ModuleFeatures.end()); 1715 Opts.NativeHalfType |= Args.hasArg(OPT_fnative_half_type); 1716 Opts.HalfArgsAndReturns = Args.hasArg(OPT_fallow_half_arguments_and_returns); 1717 Opts.GNUAsm = !Args.hasArg(OPT_fno_gnu_inline_asm); 1718 1719 // __declspec is enabled by default for the PS4 by the driver, and also 1720 // enabled for Microsoft Extensions or Borland Extensions, here. 1721 // 1722 // FIXME: __declspec is also currently enabled for CUDA, but isn't really a 1723 // CUDA extension, however it is required for supporting cuda_builtin_vars.h, 1724 // which uses __declspec(property). Once that has been rewritten in terms of 1725 // something more generic, remove the Opts.CUDA term here. 1726 Opts.DeclSpecKeyword = 1727 Args.hasFlag(OPT_fdeclspec, OPT_fno_declspec, 1728 (Opts.MicrosoftExt || Opts.Borland || Opts.CUDA)); 1729 1730 if (!Opts.CurrentModule.empty() && !Opts.ImplementationOfModule.empty() && 1731 Opts.CurrentModule != Opts.ImplementationOfModule) { 1732 Diags.Report(diag::err_conflicting_module_names) 1733 << Opts.CurrentModule << Opts.ImplementationOfModule; 1734 } 1735 1736 // For now, we only support local submodule visibility in C++ (because we 1737 // heavily depend on the ODR for merging redefinitions). 1738 if (Opts.ModulesLocalVisibility && !Opts.CPlusPlus) 1739 Diags.Report(diag::err_drv_argument_not_allowed_with) 1740 << "-fmodules-local-submodule-visibility" << "C"; 1741 1742 if (Arg *A = Args.getLastArg(OPT_faddress_space_map_mangling_EQ)) { 1743 switch (llvm::StringSwitch<unsigned>(A->getValue()) 1744 .Case("target", LangOptions::ASMM_Target) 1745 .Case("no", LangOptions::ASMM_Off) 1746 .Case("yes", LangOptions::ASMM_On) 1747 .Default(255)) { 1748 default: 1749 Diags.Report(diag::err_drv_invalid_value) 1750 << "-faddress-space-map-mangling=" << A->getValue(); 1751 break; 1752 case LangOptions::ASMM_Target: 1753 Opts.setAddressSpaceMapMangling(LangOptions::ASMM_Target); 1754 break; 1755 case LangOptions::ASMM_On: 1756 Opts.setAddressSpaceMapMangling(LangOptions::ASMM_On); 1757 break; 1758 case LangOptions::ASMM_Off: 1759 Opts.setAddressSpaceMapMangling(LangOptions::ASMM_Off); 1760 break; 1761 } 1762 } 1763 1764 if (Arg *A = Args.getLastArg(OPT_fms_memptr_rep_EQ)) { 1765 LangOptions::PragmaMSPointersToMembersKind InheritanceModel = 1766 llvm::StringSwitch<LangOptions::PragmaMSPointersToMembersKind>( 1767 A->getValue()) 1768 .Case("single", 1769 LangOptions::PPTMK_FullGeneralitySingleInheritance) 1770 .Case("multiple", 1771 LangOptions::PPTMK_FullGeneralityMultipleInheritance) 1772 .Case("virtual", 1773 LangOptions::PPTMK_FullGeneralityVirtualInheritance) 1774 .Default(LangOptions::PPTMK_BestCase); 1775 if (InheritanceModel == LangOptions::PPTMK_BestCase) 1776 Diags.Report(diag::err_drv_invalid_value) 1777 << "-fms-memptr-rep=" << A->getValue(); 1778 1779 Opts.setMSPointerToMemberRepresentationMethod(InheritanceModel); 1780 } 1781 1782 // Check if -fopenmp is specified. 1783 Opts.OpenMP = Args.hasArg(options::OPT_fopenmp); 1784 Opts.OpenMPUseTLS = 1785 Opts.OpenMP && !Args.hasArg(options::OPT_fnoopenmp_use_tls); 1786 1787 // Record whether the __DEPRECATED define was requested. 1788 Opts.Deprecated = Args.hasFlag(OPT_fdeprecated_macro, 1789 OPT_fno_deprecated_macro, 1790 Opts.Deprecated); 1791 1792 // FIXME: Eliminate this dependency. 1793 unsigned Opt = getOptimizationLevel(Args, IK, Diags), 1794 OptSize = getOptimizationLevelSize(Args); 1795 Opts.Optimize = Opt != 0; 1796 Opts.OptimizeSize = OptSize != 0; 1797 1798 // This is the __NO_INLINE__ define, which just depends on things like the 1799 // optimization level and -fno-inline, not actually whether the backend has 1800 // inlining enabled. 1801 Opts.NoInlineDefine = !Opt || Args.hasArg(OPT_fno_inline); 1802 1803 Opts.FastMath = Args.hasArg(OPT_ffast_math) || 1804 Args.hasArg(OPT_cl_fast_relaxed_math); 1805 Opts.FiniteMathOnly = Args.hasArg(OPT_ffinite_math_only) || 1806 Args.hasArg(OPT_cl_finite_math_only) || 1807 Args.hasArg(OPT_cl_fast_relaxed_math); 1808 Opts.UnsafeFPMath = Args.hasArg(OPT_menable_unsafe_fp_math) || 1809 Args.hasArg(OPT_cl_unsafe_math_optimizations) || 1810 Args.hasArg(OPT_cl_fast_relaxed_math); 1811 1812 Opts.RetainCommentsFromSystemHeaders = 1813 Args.hasArg(OPT_fretain_comments_from_system_headers); 1814 1815 unsigned SSP = getLastArgIntValue(Args, OPT_stack_protector, 0, Diags); 1816 switch (SSP) { 1817 default: 1818 Diags.Report(diag::err_drv_invalid_value) 1819 << Args.getLastArg(OPT_stack_protector)->getAsString(Args) << SSP; 1820 break; 1821 case 0: Opts.setStackProtector(LangOptions::SSPOff); break; 1822 case 1: Opts.setStackProtector(LangOptions::SSPOn); break; 1823 case 2: Opts.setStackProtector(LangOptions::SSPStrong); break; 1824 case 3: Opts.setStackProtector(LangOptions::SSPReq); break; 1825 } 1826 1827 // Parse -fsanitize= arguments. 1828 parseSanitizerKinds("-fsanitize=", Args.getAllArgValues(OPT_fsanitize_EQ), 1829 Diags, Opts.Sanitize); 1830 // -fsanitize-address-field-padding=N has to be a LangOpt, parse it here. 1831 Opts.SanitizeAddressFieldPadding = 1832 getLastArgIntValue(Args, OPT_fsanitize_address_field_padding, 0, Diags); 1833 Opts.SanitizerBlacklistFiles = Args.getAllArgValues(OPT_fsanitize_blacklist); 1834 } 1835 1836 static void ParsePreprocessorArgs(PreprocessorOptions &Opts, ArgList &Args, 1837 FileManager &FileMgr, 1838 DiagnosticsEngine &Diags) { 1839 using namespace options; 1840 Opts.ImplicitPCHInclude = Args.getLastArgValue(OPT_include_pch); 1841 Opts.ImplicitPTHInclude = Args.getLastArgValue(OPT_include_pth); 1842 if (const Arg *A = Args.getLastArg(OPT_token_cache)) 1843 Opts.TokenCache = A->getValue(); 1844 else 1845 Opts.TokenCache = Opts.ImplicitPTHInclude; 1846 Opts.UsePredefines = !Args.hasArg(OPT_undef); 1847 Opts.DetailedRecord = Args.hasArg(OPT_detailed_preprocessing_record); 1848 Opts.DisablePCHValidation = Args.hasArg(OPT_fno_validate_pch); 1849 1850 Opts.DumpDeserializedPCHDecls = Args.hasArg(OPT_dump_deserialized_pch_decls); 1851 for (const Arg *A : Args.filtered(OPT_error_on_deserialized_pch_decl)) 1852 Opts.DeserializedPCHDeclsToErrorOn.insert(A->getValue()); 1853 1854 if (const Arg *A = Args.getLastArg(OPT_preamble_bytes_EQ)) { 1855 StringRef Value(A->getValue()); 1856 size_t Comma = Value.find(','); 1857 unsigned Bytes = 0; 1858 unsigned EndOfLine = 0; 1859 1860 if (Comma == StringRef::npos || 1861 Value.substr(0, Comma).getAsInteger(10, Bytes) || 1862 Value.substr(Comma + 1).getAsInteger(10, EndOfLine)) 1863 Diags.Report(diag::err_drv_preamble_format); 1864 else { 1865 Opts.PrecompiledPreambleBytes.first = Bytes; 1866 Opts.PrecompiledPreambleBytes.second = (EndOfLine != 0); 1867 } 1868 } 1869 1870 // Add macros from the command line. 1871 for (const Arg *A : Args.filtered(OPT_D, OPT_U)) { 1872 if (A->getOption().matches(OPT_D)) 1873 Opts.addMacroDef(A->getValue()); 1874 else 1875 Opts.addMacroUndef(A->getValue()); 1876 } 1877 1878 Opts.MacroIncludes = Args.getAllArgValues(OPT_imacros); 1879 1880 // Add the ordered list of -includes. 1881 for (const Arg *A : Args.filtered(OPT_include)) 1882 Opts.Includes.emplace_back(A->getValue()); 1883 1884 for (const Arg *A : Args.filtered(OPT_chain_include)) 1885 Opts.ChainedIncludes.emplace_back(A->getValue()); 1886 1887 // Include 'altivec.h' if -faltivec option present 1888 if (Args.hasArg(OPT_faltivec)) 1889 Opts.Includes.emplace_back("altivec.h"); 1890 1891 for (const Arg *A : Args.filtered(OPT_remap_file)) { 1892 std::pair<StringRef, StringRef> Split = StringRef(A->getValue()).split(';'); 1893 1894 if (Split.second.empty()) { 1895 Diags.Report(diag::err_drv_invalid_remap_file) << A->getAsString(Args); 1896 continue; 1897 } 1898 1899 Opts.addRemappedFile(Split.first, Split.second); 1900 } 1901 1902 if (Arg *A = Args.getLastArg(OPT_fobjc_arc_cxxlib_EQ)) { 1903 StringRef Name = A->getValue(); 1904 unsigned Library = llvm::StringSwitch<unsigned>(Name) 1905 .Case("libc++", ARCXX_libcxx) 1906 .Case("libstdc++", ARCXX_libstdcxx) 1907 .Case("none", ARCXX_nolib) 1908 .Default(~0U); 1909 if (Library == ~0U) 1910 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Name; 1911 else 1912 Opts.ObjCXXARCStandardLibrary = (ObjCXXARCStandardLibraryKind)Library; 1913 } 1914 } 1915 1916 static void ParsePreprocessorOutputArgs(PreprocessorOutputOptions &Opts, 1917 ArgList &Args, 1918 frontend::ActionKind Action) { 1919 using namespace options; 1920 1921 switch (Action) { 1922 case frontend::ASTDeclList: 1923 case frontend::ASTDump: 1924 case frontend::ASTPrint: 1925 case frontend::ASTView: 1926 case frontend::EmitAssembly: 1927 case frontend::EmitBC: 1928 case frontend::EmitHTML: 1929 case frontend::EmitLLVM: 1930 case frontend::EmitLLVMOnly: 1931 case frontend::EmitCodeGenOnly: 1932 case frontend::EmitObj: 1933 case frontend::FixIt: 1934 case frontend::GenerateModule: 1935 case frontend::GeneratePCH: 1936 case frontend::GeneratePTH: 1937 case frontend::ParseSyntaxOnly: 1938 case frontend::ModuleFileInfo: 1939 case frontend::VerifyPCH: 1940 case frontend::PluginAction: 1941 case frontend::PrintDeclContext: 1942 case frontend::RewriteObjC: 1943 case frontend::RewriteTest: 1944 case frontend::RunAnalysis: 1945 case frontend::MigrateSource: 1946 Opts.ShowCPP = 0; 1947 break; 1948 1949 case frontend::DumpRawTokens: 1950 case frontend::DumpTokens: 1951 case frontend::InitOnly: 1952 case frontend::PrintPreamble: 1953 case frontend::PrintPreprocessedInput: 1954 case frontend::RewriteMacros: 1955 case frontend::RunPreprocessorOnly: 1956 Opts.ShowCPP = !Args.hasArg(OPT_dM); 1957 break; 1958 } 1959 1960 Opts.ShowComments = Args.hasArg(OPT_C); 1961 Opts.ShowLineMarkers = !Args.hasArg(OPT_P); 1962 Opts.ShowMacroComments = Args.hasArg(OPT_CC); 1963 Opts.ShowMacros = Args.hasArg(OPT_dM) || Args.hasArg(OPT_dD); 1964 Opts.RewriteIncludes = Args.hasArg(OPT_frewrite_includes); 1965 Opts.UseLineDirectives = Args.hasArg(OPT_fuse_line_directives); 1966 } 1967 1968 static void ParseTargetArgs(TargetOptions &Opts, ArgList &Args) { 1969 using namespace options; 1970 Opts.ABI = Args.getLastArgValue(OPT_target_abi); 1971 Opts.CPU = Args.getLastArgValue(OPT_target_cpu); 1972 Opts.FPMath = Args.getLastArgValue(OPT_mfpmath); 1973 Opts.FeaturesAsWritten = Args.getAllArgValues(OPT_target_feature); 1974 Opts.LinkerVersion = Args.getLastArgValue(OPT_target_linker_version); 1975 Opts.Triple = llvm::Triple::normalize(Args.getLastArgValue(OPT_triple)); 1976 Opts.Reciprocals = Args.getAllArgValues(OPT_mrecip_EQ); 1977 // Use the default target triple if unspecified. 1978 if (Opts.Triple.empty()) 1979 Opts.Triple = llvm::sys::getDefaultTargetTriple(); 1980 } 1981 1982 bool CompilerInvocation::CreateFromArgs(CompilerInvocation &Res, 1983 const char *const *ArgBegin, 1984 const char *const *ArgEnd, 1985 DiagnosticsEngine &Diags) { 1986 bool Success = true; 1987 1988 // Parse the arguments. 1989 std::unique_ptr<OptTable> Opts(createDriverOptTable()); 1990 const unsigned IncludedFlagsBitmask = options::CC1Option; 1991 unsigned MissingArgIndex, MissingArgCount; 1992 InputArgList Args = 1993 Opts->ParseArgs(llvm::makeArrayRef(ArgBegin, ArgEnd), MissingArgIndex, 1994 MissingArgCount, IncludedFlagsBitmask); 1995 1996 // Check for missing argument error. 1997 if (MissingArgCount) { 1998 Diags.Report(diag::err_drv_missing_argument) 1999 << Args.getArgString(MissingArgIndex) << MissingArgCount; 2000 Success = false; 2001 } 2002 2003 // Issue errors on unknown arguments. 2004 for (const Arg *A : Args.filtered(OPT_UNKNOWN)) { 2005 Diags.Report(diag::err_drv_unknown_argument) << A->getAsString(Args); 2006 Success = false; 2007 } 2008 2009 Success &= ParseAnalyzerArgs(*Res.getAnalyzerOpts(), Args, Diags); 2010 Success &= ParseMigratorArgs(Res.getMigratorOpts(), Args); 2011 ParseDependencyOutputArgs(Res.getDependencyOutputOpts(), Args); 2012 Success &= ParseDiagnosticArgs(Res.getDiagnosticOpts(), Args, &Diags); 2013 ParseCommentArgs(Res.getLangOpts()->CommentOpts, Args); 2014 ParseFileSystemArgs(Res.getFileSystemOpts(), Args); 2015 // FIXME: We shouldn't have to pass the DashX option around here 2016 InputKind DashX = ParseFrontendArgs(Res.getFrontendOpts(), Args, Diags); 2017 ParseTargetArgs(Res.getTargetOpts(), Args); 2018 Success &= ParseCodeGenArgs(Res.getCodeGenOpts(), Args, DashX, Diags, 2019 Res.getTargetOpts()); 2020 ParseHeaderSearchArgs(Res.getHeaderSearchOpts(), Args); 2021 if (DashX == IK_AST || DashX == IK_LLVM_IR) { 2022 // ObjCAAutoRefCount and Sanitize LangOpts are used to setup the 2023 // PassManager in BackendUtil.cpp. They need to be initializd no matter 2024 // what the input type is. 2025 if (Args.hasArg(OPT_fobjc_arc)) 2026 Res.getLangOpts()->ObjCAutoRefCount = 1; 2027 parseSanitizerKinds("-fsanitize=", Args.getAllArgValues(OPT_fsanitize_EQ), 2028 Diags, Res.getLangOpts()->Sanitize); 2029 } else { 2030 // Other LangOpts are only initialzed when the input is not AST or LLVM IR. 2031 ParseLangArgs(*Res.getLangOpts(), Args, DashX, Diags); 2032 if (Res.getFrontendOpts().ProgramAction == frontend::RewriteObjC) 2033 Res.getLangOpts()->ObjCExceptions = 1; 2034 } 2035 // FIXME: ParsePreprocessorArgs uses the FileManager to read the contents of 2036 // PCH file and find the original header name. Remove the need to do that in 2037 // ParsePreprocessorArgs and remove the FileManager 2038 // parameters from the function and the "FileManager.h" #include. 2039 FileManager FileMgr(Res.getFileSystemOpts()); 2040 ParsePreprocessorArgs(Res.getPreprocessorOpts(), Args, FileMgr, Diags); 2041 ParsePreprocessorOutputArgs(Res.getPreprocessorOutputOpts(), Args, 2042 Res.getFrontendOpts().ProgramAction); 2043 return Success; 2044 } 2045 2046 namespace { 2047 2048 class ModuleSignature { 2049 SmallVector<uint64_t, 16> Data; 2050 unsigned CurBit; 2051 uint64_t CurValue; 2052 2053 public: 2054 ModuleSignature() : CurBit(0), CurValue(0) { } 2055 2056 void add(uint64_t Value, unsigned Bits); 2057 void add(StringRef Value); 2058 void flush(); 2059 2060 llvm::APInt getAsInteger() const; 2061 }; 2062 } 2063 2064 void ModuleSignature::add(uint64_t Value, unsigned int NumBits) { 2065 CurValue |= Value << CurBit; 2066 if (CurBit + NumBits < 64) { 2067 CurBit += NumBits; 2068 return; 2069 } 2070 2071 // Add the current word. 2072 Data.push_back(CurValue); 2073 2074 if (CurBit) 2075 CurValue = Value >> (64-CurBit); 2076 else 2077 CurValue = 0; 2078 CurBit = (CurBit+NumBits) & 63; 2079 } 2080 2081 void ModuleSignature::flush() { 2082 if (CurBit == 0) 2083 return; 2084 2085 Data.push_back(CurValue); 2086 CurBit = 0; 2087 CurValue = 0; 2088 } 2089 2090 void ModuleSignature::add(StringRef Value) { 2091 for (auto &c : Value) 2092 add(c, 8); 2093 } 2094 2095 llvm::APInt ModuleSignature::getAsInteger() const { 2096 return llvm::APInt(Data.size() * 64, Data); 2097 } 2098 2099 std::string CompilerInvocation::getModuleHash() const { 2100 // Note: For QoI reasons, the things we use as a hash here should all be 2101 // dumped via the -module-info flag. 2102 using llvm::hash_code; 2103 using llvm::hash_value; 2104 using llvm::hash_combine; 2105 2106 // Start the signature with the compiler version. 2107 // FIXME: We'd rather use something more cryptographically sound than 2108 // CityHash, but this will do for now. 2109 hash_code code = hash_value(getClangFullRepositoryVersion()); 2110 2111 // Extend the signature with the language options 2112 #define LANGOPT(Name, Bits, Default, Description) \ 2113 code = hash_combine(code, LangOpts->Name); 2114 #define ENUM_LANGOPT(Name, Type, Bits, Default, Description) \ 2115 code = hash_combine(code, static_cast<unsigned>(LangOpts->get##Name())); 2116 #define BENIGN_LANGOPT(Name, Bits, Default, Description) 2117 #define BENIGN_ENUM_LANGOPT(Name, Type, Bits, Default, Description) 2118 #include "clang/Basic/LangOptions.def" 2119 2120 for (StringRef Feature : LangOpts->ModuleFeatures) 2121 code = hash_combine(code, Feature); 2122 2123 // Extend the signature with the target options. 2124 code = hash_combine(code, TargetOpts->Triple, TargetOpts->CPU, 2125 TargetOpts->ABI); 2126 for (unsigned i = 0, n = TargetOpts->FeaturesAsWritten.size(); i != n; ++i) 2127 code = hash_combine(code, TargetOpts->FeaturesAsWritten[i]); 2128 2129 // Extend the signature with preprocessor options. 2130 const PreprocessorOptions &ppOpts = getPreprocessorOpts(); 2131 const HeaderSearchOptions &hsOpts = getHeaderSearchOpts(); 2132 code = hash_combine(code, ppOpts.UsePredefines, ppOpts.DetailedRecord); 2133 2134 for (std::vector<std::pair<std::string, bool/*isUndef*/>>::const_iterator 2135 I = getPreprocessorOpts().Macros.begin(), 2136 IEnd = getPreprocessorOpts().Macros.end(); 2137 I != IEnd; ++I) { 2138 // If we're supposed to ignore this macro for the purposes of modules, 2139 // don't put it into the hash. 2140 if (!hsOpts.ModulesIgnoreMacros.empty()) { 2141 // Check whether we're ignoring this macro. 2142 StringRef MacroDef = I->first; 2143 if (hsOpts.ModulesIgnoreMacros.count(MacroDef.split('=').first)) 2144 continue; 2145 } 2146 2147 code = hash_combine(code, I->first, I->second); 2148 } 2149 2150 // Extend the signature with the sysroot. 2151 code = hash_combine(code, hsOpts.Sysroot, hsOpts.UseBuiltinIncludes, 2152 hsOpts.UseStandardSystemIncludes, 2153 hsOpts.UseStandardCXXIncludes, 2154 hsOpts.UseLibcxx); 2155 code = hash_combine(code, hsOpts.ResourceDir); 2156 2157 // Extend the signature with the user build path. 2158 code = hash_combine(code, hsOpts.ModuleUserBuildPath); 2159 2160 // Extend the signature with the module file extensions. 2161 const FrontendOptions &frontendOpts = getFrontendOpts(); 2162 for (auto ext : frontendOpts.ModuleFileExtensions) { 2163 code = ext->hashExtension(code); 2164 } 2165 2166 // Darwin-specific hack: if we have a sysroot, use the contents and 2167 // modification time of 2168 // $sysroot/System/Library/CoreServices/SystemVersion.plist 2169 // as part of the module hash. 2170 if (!hsOpts.Sysroot.empty()) { 2171 SmallString<128> systemVersionFile; 2172 systemVersionFile += hsOpts.Sysroot; 2173 llvm::sys::path::append(systemVersionFile, "System"); 2174 llvm::sys::path::append(systemVersionFile, "Library"); 2175 llvm::sys::path::append(systemVersionFile, "CoreServices"); 2176 llvm::sys::path::append(systemVersionFile, "SystemVersion.plist"); 2177 2178 llvm::ErrorOr<std::unique_ptr<llvm::MemoryBuffer>> buffer = 2179 llvm::MemoryBuffer::getFile(systemVersionFile); 2180 if (buffer) { 2181 code = hash_combine(code, buffer.get()->getBuffer()); 2182 2183 struct stat statBuf; 2184 if (stat(systemVersionFile.c_str(), &statBuf) == 0) 2185 code = hash_combine(code, statBuf.st_mtime); 2186 } 2187 } 2188 2189 return llvm::APInt(64, code).toString(36, /*Signed=*/false); 2190 } 2191 2192 namespace clang { 2193 2194 template<typename IntTy> 2195 static IntTy getLastArgIntValueImpl(const ArgList &Args, OptSpecifier Id, 2196 IntTy Default, 2197 DiagnosticsEngine *Diags) { 2198 IntTy Res = Default; 2199 if (Arg *A = Args.getLastArg(Id)) { 2200 if (StringRef(A->getValue()).getAsInteger(10, Res)) { 2201 if (Diags) 2202 Diags->Report(diag::err_drv_invalid_int_value) << A->getAsString(Args) 2203 << A->getValue(); 2204 } 2205 } 2206 return Res; 2207 } 2208 2209 2210 // Declared in clang/Frontend/Utils.h. 2211 int getLastArgIntValue(const ArgList &Args, OptSpecifier Id, int Default, 2212 DiagnosticsEngine *Diags) { 2213 return getLastArgIntValueImpl<int>(Args, Id, Default, Diags); 2214 } 2215 2216 uint64_t getLastArgUInt64Value(const ArgList &Args, OptSpecifier Id, 2217 uint64_t Default, 2218 DiagnosticsEngine *Diags) { 2219 return getLastArgIntValueImpl<uint64_t>(Args, Id, Default, Diags); 2220 } 2221 2222 void BuryPointer(const void *Ptr) { 2223 // This function may be called only a small fixed amount of times per each 2224 // invocation, otherwise we do actually have a leak which we want to report. 2225 // If this function is called more than kGraveYardMaxSize times, the pointers 2226 // will not be properly buried and a leak detector will report a leak, which 2227 // is what we want in such case. 2228 static const size_t kGraveYardMaxSize = 16; 2229 LLVM_ATTRIBUTE_UNUSED static const void *GraveYard[kGraveYardMaxSize]; 2230 static std::atomic<unsigned> GraveYardSize; 2231 unsigned Idx = GraveYardSize++; 2232 if (Idx >= kGraveYardMaxSize) 2233 return; 2234 GraveYard[Idx] = Ptr; 2235 } 2236 2237 IntrusiveRefCntPtr<vfs::FileSystem> 2238 createVFSFromCompilerInvocation(const CompilerInvocation &CI, 2239 DiagnosticsEngine &Diags) { 2240 if (CI.getHeaderSearchOpts().VFSOverlayFiles.empty()) 2241 return vfs::getRealFileSystem(); 2242 2243 IntrusiveRefCntPtr<vfs::OverlayFileSystem> 2244 Overlay(new vfs::OverlayFileSystem(vfs::getRealFileSystem())); 2245 // earlier vfs files are on the bottom 2246 for (const std::string &File : CI.getHeaderSearchOpts().VFSOverlayFiles) { 2247 llvm::ErrorOr<std::unique_ptr<llvm::MemoryBuffer>> Buffer = 2248 llvm::MemoryBuffer::getFile(File); 2249 if (!Buffer) { 2250 Diags.Report(diag::err_missing_vfs_overlay_file) << File; 2251 return IntrusiveRefCntPtr<vfs::FileSystem>(); 2252 } 2253 2254 IntrusiveRefCntPtr<vfs::FileSystem> FS = 2255 vfs::getVFSFromYAML(std::move(Buffer.get()), /*DiagHandler*/ nullptr); 2256 if (!FS.get()) { 2257 Diags.Report(diag::err_invalid_vfs_overlay) << File; 2258 return IntrusiveRefCntPtr<vfs::FileSystem>(); 2259 } 2260 Overlay->pushOverlay(FS); 2261 } 2262 return Overlay; 2263 } 2264 } // end namespace clang 2265