1 //===--- CompilerInvocation.cpp -------------------------------------------===// 2 // 3 // The LLVM Compiler Infrastructure 4 // 5 // This file is distributed under the University of Illinois Open Source 6 // License. See LICENSE.TXT for details. 7 // 8 //===----------------------------------------------------------------------===// 9 10 #include "clang/Frontend/CompilerInvocation.h" 11 #include "clang/Basic/FileManager.h" 12 #include "clang/Basic/Version.h" 13 #include "clang/Config/config.h" 14 #include "clang/Driver/DriverDiagnostic.h" 15 #include "clang/Driver/Options.h" 16 #include "clang/Driver/Util.h" 17 #include "clang/Frontend/FrontendDiagnostic.h" 18 #include "clang/Frontend/LangStandard.h" 19 #include "clang/Frontend/Utils.h" 20 #include "clang/Lex/HeaderSearchOptions.h" 21 #include "clang/Serialization/ASTReader.h" 22 #include "llvm/ADT/Hashing.h" 23 #include "llvm/ADT/STLExtras.h" 24 #include "llvm/ADT/SmallVector.h" 25 #include "llvm/ADT/StringExtras.h" 26 #include "llvm/ADT/StringSwitch.h" 27 #include "llvm/ADT/Triple.h" 28 #include "llvm/Option/Arg.h" 29 #include "llvm/Option/ArgList.h" 30 #include "llvm/Option/OptTable.h" 31 #include "llvm/Option/Option.h" 32 #include "llvm/Support/CodeGen.h" 33 #include "llvm/Support/ErrorHandling.h" 34 #include "llvm/Support/FileSystem.h" 35 #include "llvm/Support/Host.h" 36 #include "llvm/Support/Path.h" 37 #include "llvm/Support/Process.h" 38 #include <atomic> 39 #include <memory> 40 #include <sys/stat.h> 41 #include <system_error> 42 using namespace clang; 43 44 //===----------------------------------------------------------------------===// 45 // Initialization. 46 //===----------------------------------------------------------------------===// 47 48 CompilerInvocationBase::CompilerInvocationBase() 49 : LangOpts(new LangOptions()), TargetOpts(new TargetOptions()), 50 DiagnosticOpts(new DiagnosticOptions()), 51 HeaderSearchOpts(new HeaderSearchOptions()), 52 PreprocessorOpts(new PreprocessorOptions()) {} 53 54 CompilerInvocationBase::CompilerInvocationBase(const CompilerInvocationBase &X) 55 : RefCountedBase<CompilerInvocation>(), 56 LangOpts(new LangOptions(*X.getLangOpts())), 57 TargetOpts(new TargetOptions(X.getTargetOpts())), 58 DiagnosticOpts(new DiagnosticOptions(X.getDiagnosticOpts())), 59 HeaderSearchOpts(new HeaderSearchOptions(X.getHeaderSearchOpts())), 60 PreprocessorOpts(new PreprocessorOptions(X.getPreprocessorOpts())) {} 61 62 CompilerInvocationBase::~CompilerInvocationBase() {} 63 64 //===----------------------------------------------------------------------===// 65 // Deserialization (from args) 66 //===----------------------------------------------------------------------===// 67 68 using namespace clang::driver; 69 using namespace clang::driver::options; 70 using namespace llvm::opt; 71 72 // 73 74 static unsigned getOptimizationLevel(ArgList &Args, InputKind IK, 75 DiagnosticsEngine &Diags) { 76 unsigned DefaultOpt = 0; 77 if (IK == IK_OpenCL && !Args.hasArg(OPT_cl_opt_disable)) 78 DefaultOpt = 2; 79 80 if (Arg *A = Args.getLastArg(options::OPT_O_Group)) { 81 if (A->getOption().matches(options::OPT_O0)) 82 return 0; 83 84 if (A->getOption().matches(options::OPT_Ofast)) 85 return 3; 86 87 assert (A->getOption().matches(options::OPT_O)); 88 89 StringRef S(A->getValue()); 90 if (S == "s" || S == "z" || S.empty()) 91 return 2; 92 93 return getLastArgIntValue(Args, OPT_O, DefaultOpt, Diags); 94 } 95 96 return DefaultOpt; 97 } 98 99 static unsigned getOptimizationLevelSize(ArgList &Args) { 100 if (Arg *A = Args.getLastArg(options::OPT_O_Group)) { 101 if (A->getOption().matches(options::OPT_O)) { 102 switch (A->getValue()[0]) { 103 default: 104 return 0; 105 case 's': 106 return 1; 107 case 'z': 108 return 2; 109 } 110 } 111 } 112 return 0; 113 } 114 115 static void addDiagnosticArgs(ArgList &Args, OptSpecifier Group, 116 OptSpecifier GroupWithValue, 117 std::vector<std::string> &Diagnostics) { 118 for (Arg *A : Args.filtered(Group)) { 119 if (A->getOption().getKind() == Option::FlagClass) { 120 // The argument is a pure flag (such as OPT_Wall or OPT_Wdeprecated). Add 121 // its name (minus the "W" or "R" at the beginning) to the warning list. 122 Diagnostics.push_back(A->getOption().getName().drop_front(1)); 123 } else if (A->getOption().matches(GroupWithValue)) { 124 // This is -Wfoo= or -Rfoo=, where foo is the name of the diagnostic group. 125 Diagnostics.push_back(A->getOption().getName().drop_front(1).rtrim("=-")); 126 } else { 127 // Otherwise, add its value (for OPT_W_Joined and similar). 128 for (const char *Arg : A->getValues()) 129 Diagnostics.emplace_back(Arg); 130 } 131 } 132 } 133 134 static bool ParseAnalyzerArgs(AnalyzerOptions &Opts, ArgList &Args, 135 DiagnosticsEngine &Diags) { 136 using namespace options; 137 bool Success = true; 138 if (Arg *A = Args.getLastArg(OPT_analyzer_store)) { 139 StringRef Name = A->getValue(); 140 AnalysisStores Value = llvm::StringSwitch<AnalysisStores>(Name) 141 #define ANALYSIS_STORE(NAME, CMDFLAG, DESC, CREATFN) \ 142 .Case(CMDFLAG, NAME##Model) 143 #include "clang/StaticAnalyzer/Core/Analyses.def" 144 .Default(NumStores); 145 if (Value == NumStores) { 146 Diags.Report(diag::err_drv_invalid_value) 147 << A->getAsString(Args) << Name; 148 Success = false; 149 } else { 150 Opts.AnalysisStoreOpt = Value; 151 } 152 } 153 154 if (Arg *A = Args.getLastArg(OPT_analyzer_constraints)) { 155 StringRef Name = A->getValue(); 156 AnalysisConstraints Value = llvm::StringSwitch<AnalysisConstraints>(Name) 157 #define ANALYSIS_CONSTRAINTS(NAME, CMDFLAG, DESC, CREATFN) \ 158 .Case(CMDFLAG, NAME##Model) 159 #include "clang/StaticAnalyzer/Core/Analyses.def" 160 .Default(NumConstraints); 161 if (Value == NumConstraints) { 162 Diags.Report(diag::err_drv_invalid_value) 163 << A->getAsString(Args) << Name; 164 Success = false; 165 } else { 166 Opts.AnalysisConstraintsOpt = Value; 167 } 168 } 169 170 if (Arg *A = Args.getLastArg(OPT_analyzer_output)) { 171 StringRef Name = A->getValue(); 172 AnalysisDiagClients Value = llvm::StringSwitch<AnalysisDiagClients>(Name) 173 #define ANALYSIS_DIAGNOSTICS(NAME, CMDFLAG, DESC, CREATFN) \ 174 .Case(CMDFLAG, PD_##NAME) 175 #include "clang/StaticAnalyzer/Core/Analyses.def" 176 .Default(NUM_ANALYSIS_DIAG_CLIENTS); 177 if (Value == NUM_ANALYSIS_DIAG_CLIENTS) { 178 Diags.Report(diag::err_drv_invalid_value) 179 << A->getAsString(Args) << Name; 180 Success = false; 181 } else { 182 Opts.AnalysisDiagOpt = Value; 183 } 184 } 185 186 if (Arg *A = Args.getLastArg(OPT_analyzer_purge)) { 187 StringRef Name = A->getValue(); 188 AnalysisPurgeMode Value = llvm::StringSwitch<AnalysisPurgeMode>(Name) 189 #define ANALYSIS_PURGE(NAME, CMDFLAG, DESC) \ 190 .Case(CMDFLAG, NAME) 191 #include "clang/StaticAnalyzer/Core/Analyses.def" 192 .Default(NumPurgeModes); 193 if (Value == NumPurgeModes) { 194 Diags.Report(diag::err_drv_invalid_value) 195 << A->getAsString(Args) << Name; 196 Success = false; 197 } else { 198 Opts.AnalysisPurgeOpt = Value; 199 } 200 } 201 202 if (Arg *A = Args.getLastArg(OPT_analyzer_inlining_mode)) { 203 StringRef Name = A->getValue(); 204 AnalysisInliningMode Value = llvm::StringSwitch<AnalysisInliningMode>(Name) 205 #define ANALYSIS_INLINING_MODE(NAME, CMDFLAG, DESC) \ 206 .Case(CMDFLAG, NAME) 207 #include "clang/StaticAnalyzer/Core/Analyses.def" 208 .Default(NumInliningModes); 209 if (Value == NumInliningModes) { 210 Diags.Report(diag::err_drv_invalid_value) 211 << A->getAsString(Args) << Name; 212 Success = false; 213 } else { 214 Opts.InliningMode = Value; 215 } 216 } 217 218 Opts.ShowCheckerHelp = Args.hasArg(OPT_analyzer_checker_help); 219 Opts.DisableAllChecks = Args.hasArg(OPT_analyzer_disable_all_checks); 220 221 Opts.visualizeExplodedGraphWithGraphViz = 222 Args.hasArg(OPT_analyzer_viz_egraph_graphviz); 223 Opts.visualizeExplodedGraphWithUbiGraph = 224 Args.hasArg(OPT_analyzer_viz_egraph_ubigraph); 225 Opts.NoRetryExhausted = Args.hasArg(OPT_analyzer_disable_retry_exhausted); 226 Opts.AnalyzeAll = Args.hasArg(OPT_analyzer_opt_analyze_headers); 227 Opts.AnalyzerDisplayProgress = Args.hasArg(OPT_analyzer_display_progress); 228 Opts.AnalyzeNestedBlocks = 229 Args.hasArg(OPT_analyzer_opt_analyze_nested_blocks); 230 Opts.eagerlyAssumeBinOpBifurcation = Args.hasArg(OPT_analyzer_eagerly_assume); 231 Opts.AnalyzeSpecificFunction = Args.getLastArgValue(OPT_analyze_function); 232 Opts.UnoptimizedCFG = Args.hasArg(OPT_analysis_UnoptimizedCFG); 233 Opts.TrimGraph = Args.hasArg(OPT_trim_egraph); 234 Opts.maxBlockVisitOnPath = 235 getLastArgIntValue(Args, OPT_analyzer_max_loop, 4, Diags); 236 Opts.PrintStats = Args.hasArg(OPT_analyzer_stats); 237 Opts.InlineMaxStackDepth = 238 getLastArgIntValue(Args, OPT_analyzer_inline_max_stack_depth, 239 Opts.InlineMaxStackDepth, Diags); 240 241 Opts.CheckersControlList.clear(); 242 for (const Arg *A : 243 Args.filtered(OPT_analyzer_checker, OPT_analyzer_disable_checker)) { 244 A->claim(); 245 bool enable = (A->getOption().getID() == OPT_analyzer_checker); 246 // We can have a list of comma separated checker names, e.g: 247 // '-analyzer-checker=cocoa,unix' 248 StringRef checkerList = A->getValue(); 249 SmallVector<StringRef, 4> checkers; 250 checkerList.split(checkers, ","); 251 for (StringRef checker : checkers) 252 Opts.CheckersControlList.emplace_back(checker, enable); 253 } 254 255 // Go through the analyzer configuration options. 256 for (const Arg *A : Args.filtered(OPT_analyzer_config)) { 257 A->claim(); 258 // We can have a list of comma separated config names, e.g: 259 // '-analyzer-config key1=val1,key2=val2' 260 StringRef configList = A->getValue(); 261 SmallVector<StringRef, 4> configVals; 262 configList.split(configVals, ","); 263 for (unsigned i = 0, e = configVals.size(); i != e; ++i) { 264 StringRef key, val; 265 std::tie(key, val) = configVals[i].split("="); 266 if (val.empty()) { 267 Diags.Report(SourceLocation(), 268 diag::err_analyzer_config_no_value) << configVals[i]; 269 Success = false; 270 break; 271 } 272 if (val.find('=') != StringRef::npos) { 273 Diags.Report(SourceLocation(), 274 diag::err_analyzer_config_multiple_values) 275 << configVals[i]; 276 Success = false; 277 break; 278 } 279 Opts.Config[key] = val; 280 } 281 } 282 283 return Success; 284 } 285 286 static bool ParseMigratorArgs(MigratorOptions &Opts, ArgList &Args) { 287 Opts.NoNSAllocReallocError = Args.hasArg(OPT_migrator_no_nsalloc_error); 288 Opts.NoFinalizeRemoval = Args.hasArg(OPT_migrator_no_finalize_removal); 289 return true; 290 } 291 292 static void ParseCommentArgs(CommentOptions &Opts, ArgList &Args) { 293 Opts.BlockCommandNames = Args.getAllArgValues(OPT_fcomment_block_commands); 294 Opts.ParseAllComments = Args.hasArg(OPT_fparse_all_comments); 295 } 296 297 static StringRef getCodeModel(ArgList &Args, DiagnosticsEngine &Diags) { 298 if (Arg *A = Args.getLastArg(OPT_mcode_model)) { 299 StringRef Value = A->getValue(); 300 if (Value == "small" || Value == "kernel" || Value == "medium" || 301 Value == "large") 302 return Value; 303 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Value; 304 } 305 return "default"; 306 } 307 308 /// \brief Create a new Regex instance out of the string value in \p RpassArg. 309 /// It returns a pointer to the newly generated Regex instance. 310 static std::shared_ptr<llvm::Regex> 311 GenerateOptimizationRemarkRegex(DiagnosticsEngine &Diags, ArgList &Args, 312 Arg *RpassArg) { 313 StringRef Val = RpassArg->getValue(); 314 std::string RegexError; 315 std::shared_ptr<llvm::Regex> Pattern = std::make_shared<llvm::Regex>(Val); 316 if (!Pattern->isValid(RegexError)) { 317 Diags.Report(diag::err_drv_optimization_remark_pattern) 318 << RegexError << RpassArg->getAsString(Args); 319 Pattern.reset(); 320 } 321 return Pattern; 322 } 323 324 static bool parseDiagnosticLevelMask(StringRef FlagName, 325 const std::vector<std::string> &Levels, 326 DiagnosticsEngine *Diags, 327 DiagnosticLevelMask &M) { 328 bool Success = true; 329 for (const auto &Level : Levels) { 330 DiagnosticLevelMask const PM = 331 llvm::StringSwitch<DiagnosticLevelMask>(Level) 332 .Case("note", DiagnosticLevelMask::Note) 333 .Case("remark", DiagnosticLevelMask::Remark) 334 .Case("warning", DiagnosticLevelMask::Warning) 335 .Case("error", DiagnosticLevelMask::Error) 336 .Default(DiagnosticLevelMask::None); 337 if (PM == DiagnosticLevelMask::None) { 338 Success = false; 339 if (Diags) 340 Diags->Report(diag::err_drv_invalid_value) << FlagName << Level; 341 } 342 M = M | PM; 343 } 344 return Success; 345 } 346 347 static void parseSanitizerKinds(StringRef FlagName, 348 const std::vector<std::string> &Sanitizers, 349 DiagnosticsEngine &Diags, SanitizerSet &S) { 350 for (const auto &Sanitizer : Sanitizers) { 351 SanitizerMask K = parseSanitizerValue(Sanitizer, /*AllowGroups=*/false); 352 if (K == 0) 353 Diags.Report(diag::err_drv_invalid_value) << FlagName << Sanitizer; 354 else 355 S.set(K, true); 356 } 357 } 358 359 static bool ParseCodeGenArgs(CodeGenOptions &Opts, ArgList &Args, InputKind IK, 360 DiagnosticsEngine &Diags, 361 const TargetOptions &TargetOpts) { 362 using namespace options; 363 bool Success = true; 364 365 unsigned OptimizationLevel = getOptimizationLevel(Args, IK, Diags); 366 // TODO: This could be done in Driver 367 unsigned MaxOptLevel = 3; 368 if (OptimizationLevel > MaxOptLevel) { 369 // If the optimization level is not supported, fall back on the default 370 // optimization 371 Diags.Report(diag::warn_drv_optimization_value) 372 << Args.getLastArg(OPT_O)->getAsString(Args) << "-O" << MaxOptLevel; 373 OptimizationLevel = MaxOptLevel; 374 } 375 Opts.OptimizationLevel = OptimizationLevel; 376 377 // We must always run at least the always inlining pass. 378 Opts.setInlining( 379 (Opts.OptimizationLevel > 1) ? CodeGenOptions::NormalInlining 380 : CodeGenOptions::OnlyAlwaysInlining); 381 // -fno-inline-functions overrides OptimizationLevel > 1. 382 Opts.NoInline = Args.hasArg(OPT_fno_inline); 383 Opts.setInlining(Args.hasArg(OPT_fno_inline_functions) ? 384 CodeGenOptions::OnlyAlwaysInlining : Opts.getInlining()); 385 386 if (Arg *A = Args.getLastArg(OPT_fveclib)) { 387 StringRef Name = A->getValue(); 388 if (Name == "Accelerate") 389 Opts.setVecLib(CodeGenOptions::Accelerate); 390 else if (Name == "none") 391 Opts.setVecLib(CodeGenOptions::NoLibrary); 392 else 393 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Name; 394 } 395 396 if (Args.hasArg(OPT_gline_tables_only)) { 397 Opts.setDebugInfo(CodeGenOptions::DebugLineTablesOnly); 398 } else if (Args.hasArg(OPT_g_Flag) || Args.hasArg(OPT_gdwarf_2) || 399 Args.hasArg(OPT_gdwarf_3) || Args.hasArg(OPT_gdwarf_4)) { 400 bool Default = false; 401 // Until dtrace (via CTF) and LLDB can deal with distributed debug info, 402 // Darwin and FreeBSD default to standalone/full debug info. 403 if (llvm::Triple(TargetOpts.Triple).isOSDarwin() || 404 llvm::Triple(TargetOpts.Triple).isOSFreeBSD()) 405 Default = true; 406 407 if (Args.hasFlag(OPT_fstandalone_debug, OPT_fno_standalone_debug, Default)) 408 Opts.setDebugInfo(CodeGenOptions::FullDebugInfo); 409 else 410 Opts.setDebugInfo(CodeGenOptions::LimitedDebugInfo); 411 } 412 Opts.DebugColumnInfo = Args.hasArg(OPT_dwarf_column_info); 413 Opts.SplitDwarfFile = Args.getLastArgValue(OPT_split_dwarf_file); 414 if (Args.hasArg(OPT_gdwarf_2)) 415 Opts.DwarfVersion = 2; 416 else if (Args.hasArg(OPT_gdwarf_3)) 417 Opts.DwarfVersion = 3; 418 else if (Args.hasArg(OPT_gdwarf_4)) 419 Opts.DwarfVersion = 4; 420 else if (Opts.getDebugInfo() != CodeGenOptions::NoDebugInfo) 421 // Default Dwarf version is 4 if we are generating debug information. 422 Opts.DwarfVersion = 4; 423 424 if (const Arg *A = 425 Args.getLastArg(OPT_emit_llvm_uselists, OPT_no_emit_llvm_uselists)) 426 Opts.EmitLLVMUseLists = A->getOption().getID() == OPT_emit_llvm_uselists; 427 428 Opts.DisableLLVMOpts = Args.hasArg(OPT_disable_llvm_optzns); 429 Opts.DisableLLVMPasses = Args.hasArg(OPT_disable_llvm_passes); 430 Opts.DisableRedZone = Args.hasArg(OPT_disable_red_zone); 431 Opts.ForbidGuardVariables = Args.hasArg(OPT_fforbid_guard_variables); 432 Opts.UseRegisterSizedBitfieldAccess = Args.hasArg( 433 OPT_fuse_register_sized_bitfield_access); 434 Opts.RelaxedAliasing = Args.hasArg(OPT_relaxed_aliasing); 435 Opts.StructPathTBAA = !Args.hasArg(OPT_no_struct_path_tbaa); 436 Opts.DwarfDebugFlags = Args.getLastArgValue(OPT_dwarf_debug_flags); 437 Opts.MergeAllConstants = !Args.hasArg(OPT_fno_merge_all_constants); 438 Opts.NoCommon = Args.hasArg(OPT_fno_common); 439 Opts.NoImplicitFloat = Args.hasArg(OPT_no_implicit_float); 440 Opts.OptimizeSize = getOptimizationLevelSize(Args); 441 Opts.SimplifyLibCalls = !(Args.hasArg(OPT_fno_builtin) || 442 Args.hasArg(OPT_ffreestanding)); 443 Opts.UnrollLoops = 444 Args.hasFlag(OPT_funroll_loops, OPT_fno_unroll_loops, 445 (Opts.OptimizationLevel > 1 && !Opts.OptimizeSize)); 446 Opts.RerollLoops = Args.hasArg(OPT_freroll_loops); 447 448 Opts.DisableIntegratedAS = Args.hasArg(OPT_fno_integrated_as); 449 Opts.Autolink = !Args.hasArg(OPT_fno_autolink); 450 Opts.SampleProfileFile = Args.getLastArgValue(OPT_fprofile_sample_use_EQ); 451 Opts.ProfileInstrGenerate = Args.hasArg(OPT_fprofile_instr_generate) || 452 Args.hasArg(OPT_fprofile_instr_generate_EQ); 453 Opts.InstrProfileOutput = Args.getLastArgValue(OPT_fprofile_instr_generate_EQ); 454 Opts.InstrProfileInput = Args.getLastArgValue(OPT_fprofile_instr_use_EQ); 455 Opts.CoverageMapping = Args.hasArg(OPT_fcoverage_mapping); 456 Opts.DumpCoverageMapping = Args.hasArg(OPT_dump_coverage_mapping); 457 Opts.AsmVerbose = Args.hasArg(OPT_masm_verbose); 458 Opts.ObjCAutoRefCountExceptions = Args.hasArg(OPT_fobjc_arc_exceptions); 459 Opts.NewMSEH = Args.hasArg(OPT_fnew_ms_eh); 460 Opts.CXAAtExit = !Args.hasArg(OPT_fno_use_cxa_atexit); 461 Opts.CXXCtorDtorAliases = Args.hasArg(OPT_mconstructor_aliases); 462 Opts.CodeModel = getCodeModel(Args, Diags); 463 Opts.DebugPass = Args.getLastArgValue(OPT_mdebug_pass); 464 Opts.DisableFPElim = Args.hasArg(OPT_mdisable_fp_elim); 465 Opts.DisableFree = Args.hasArg(OPT_disable_free); 466 Opts.DisableTailCalls = Args.hasArg(OPT_mdisable_tail_calls); 467 Opts.FloatABI = Args.getLastArgValue(OPT_mfloat_abi); 468 Opts.LessPreciseFPMAD = Args.hasArg(OPT_cl_mad_enable); 469 Opts.LimitFloatPrecision = Args.getLastArgValue(OPT_mlimit_float_precision); 470 Opts.NoInfsFPMath = (Args.hasArg(OPT_menable_no_infinities) || 471 Args.hasArg(OPT_cl_finite_math_only) || 472 Args.hasArg(OPT_cl_fast_relaxed_math)); 473 Opts.NoNaNsFPMath = (Args.hasArg(OPT_menable_no_nans) || 474 Args.hasArg(OPT_cl_unsafe_math_optimizations) || 475 Args.hasArg(OPT_cl_finite_math_only) || 476 Args.hasArg(OPT_cl_fast_relaxed_math)); 477 Opts.NoSignedZeros = Args.hasArg(OPT_fno_signed_zeros); 478 Opts.ReciprocalMath = Args.hasArg(OPT_freciprocal_math); 479 Opts.NoZeroInitializedInBSS = Args.hasArg(OPT_mno_zero_initialized_in_bss); 480 Opts.BackendOptions = Args.getAllArgValues(OPT_backend_option); 481 Opts.NumRegisterParameters = getLastArgIntValue(Args, OPT_mregparm, 0, Diags); 482 Opts.NoExecStack = Args.hasArg(OPT_mno_exec_stack); 483 Opts.FatalWarnings = Args.hasArg(OPT_massembler_fatal_warnings); 484 Opts.EnableSegmentedStacks = Args.hasArg(OPT_split_stacks); 485 Opts.RelaxAll = Args.hasArg(OPT_mrelax_all); 486 Opts.OmitLeafFramePointer = Args.hasArg(OPT_momit_leaf_frame_pointer); 487 Opts.SaveTempLabels = Args.hasArg(OPT_msave_temp_labels); 488 Opts.NoDwarfDirectoryAsm = Args.hasArg(OPT_fno_dwarf_directory_asm); 489 Opts.SoftFloat = Args.hasArg(OPT_msoft_float); 490 Opts.StrictEnums = Args.hasArg(OPT_fstrict_enums); 491 Opts.UnsafeFPMath = Args.hasArg(OPT_menable_unsafe_fp_math) || 492 Args.hasArg(OPT_cl_unsafe_math_optimizations) || 493 Args.hasArg(OPT_cl_fast_relaxed_math); 494 Opts.UnwindTables = Args.hasArg(OPT_munwind_tables); 495 Opts.RelocationModel = Args.getLastArgValue(OPT_mrelocation_model, "pic"); 496 Opts.ThreadModel = Args.getLastArgValue(OPT_mthread_model, "posix"); 497 if (Opts.ThreadModel != "posix" && Opts.ThreadModel != "single") 498 Diags.Report(diag::err_drv_invalid_value) 499 << Args.getLastArg(OPT_mthread_model)->getAsString(Args) 500 << Opts.ThreadModel; 501 Opts.TrapFuncName = Args.getLastArgValue(OPT_ftrap_function_EQ); 502 Opts.UseInitArray = Args.hasArg(OPT_fuse_init_array); 503 504 Opts.FunctionSections = Args.hasFlag(OPT_ffunction_sections, 505 OPT_fno_function_sections, false); 506 Opts.DataSections = Args.hasFlag(OPT_fdata_sections, 507 OPT_fno_data_sections, false); 508 Opts.UniqueSectionNames = Args.hasFlag(OPT_funique_section_names, 509 OPT_fno_unique_section_names, true); 510 511 Opts.MergeFunctions = Args.hasArg(OPT_fmerge_functions); 512 513 Opts.PrepareForLTO = Args.hasArg(OPT_flto); 514 515 Opts.MSVolatile = Args.hasArg(OPT_fms_volatile); 516 517 Opts.VectorizeBB = Args.hasArg(OPT_vectorize_slp_aggressive); 518 Opts.VectorizeLoop = Args.hasArg(OPT_vectorize_loops); 519 Opts.VectorizeSLP = Args.hasArg(OPT_vectorize_slp); 520 521 Opts.MainFileName = Args.getLastArgValue(OPT_main_file_name); 522 Opts.VerifyModule = !Args.hasArg(OPT_disable_llvm_verifier); 523 524 Opts.DisableGCov = Args.hasArg(OPT_test_coverage); 525 Opts.EmitGcovArcs = Args.hasArg(OPT_femit_coverage_data); 526 Opts.EmitGcovNotes = Args.hasArg(OPT_femit_coverage_notes); 527 if (Opts.EmitGcovArcs || Opts.EmitGcovNotes) { 528 Opts.CoverageFile = Args.getLastArgValue(OPT_coverage_file); 529 Opts.CoverageExtraChecksum = Args.hasArg(OPT_coverage_cfg_checksum); 530 Opts.CoverageNoFunctionNamesInData = 531 Args.hasArg(OPT_coverage_no_function_names_in_data); 532 Opts.CoverageExitBlockBeforeBody = 533 Args.hasArg(OPT_coverage_exit_block_before_body); 534 if (Args.hasArg(OPT_coverage_version_EQ)) { 535 StringRef CoverageVersion = Args.getLastArgValue(OPT_coverage_version_EQ); 536 if (CoverageVersion.size() != 4) { 537 Diags.Report(diag::err_drv_invalid_value) 538 << Args.getLastArg(OPT_coverage_version_EQ)->getAsString(Args) 539 << CoverageVersion; 540 } else { 541 memcpy(Opts.CoverageVersion, CoverageVersion.data(), 4); 542 } 543 } 544 } 545 546 Opts.InstrumentFunctions = Args.hasArg(OPT_finstrument_functions); 547 Opts.InstrumentForProfiling = Args.hasArg(OPT_pg); 548 Opts.EmitOpenCLArgMetadata = Args.hasArg(OPT_cl_kernel_arg_info); 549 Opts.CompressDebugSections = Args.hasArg(OPT_compress_debug_sections); 550 Opts.DebugCompilationDir = Args.getLastArgValue(OPT_fdebug_compilation_dir); 551 Opts.LinkBitcodeFile = Args.getLastArgValue(OPT_mlink_bitcode_file); 552 Opts.SanitizeCoverageType = 553 getLastArgIntValue(Args, OPT_fsanitize_coverage_type, 0, Diags); 554 Opts.SanitizeCoverageIndirectCalls = 555 Args.hasArg(OPT_fsanitize_coverage_indirect_calls); 556 Opts.SanitizeCoverageTraceBB = Args.hasArg(OPT_fsanitize_coverage_trace_bb); 557 Opts.SanitizeCoverageTraceCmp = Args.hasArg(OPT_fsanitize_coverage_trace_cmp); 558 Opts.SanitizeCoverage8bitCounters = 559 Args.hasArg(OPT_fsanitize_coverage_8bit_counters); 560 Opts.SanitizeMemoryTrackOrigins = 561 getLastArgIntValue(Args, OPT_fsanitize_memory_track_origins_EQ, 0, Diags); 562 Opts.SanitizeMemoryUseAfterDtor = 563 Args.hasArg(OPT_fsanitize_memory_use_after_dtor); 564 Opts.SSPBufferSize = 565 getLastArgIntValue(Args, OPT_stack_protector_buffer_size, 8, Diags); 566 Opts.StackRealignment = Args.hasArg(OPT_mstackrealign); 567 if (Arg *A = Args.getLastArg(OPT_mstack_alignment)) { 568 StringRef Val = A->getValue(); 569 unsigned StackAlignment = Opts.StackAlignment; 570 Val.getAsInteger(10, StackAlignment); 571 Opts.StackAlignment = StackAlignment; 572 } 573 574 if (Arg *A = Args.getLastArg(OPT_mstack_probe_size)) { 575 StringRef Val = A->getValue(); 576 unsigned StackProbeSize = Opts.StackProbeSize; 577 Val.getAsInteger(0, StackProbeSize); 578 Opts.StackProbeSize = StackProbeSize; 579 } 580 581 if (Arg *A = Args.getLastArg(OPT_fobjc_dispatch_method_EQ)) { 582 StringRef Name = A->getValue(); 583 unsigned Method = llvm::StringSwitch<unsigned>(Name) 584 .Case("legacy", CodeGenOptions::Legacy) 585 .Case("non-legacy", CodeGenOptions::NonLegacy) 586 .Case("mixed", CodeGenOptions::Mixed) 587 .Default(~0U); 588 if (Method == ~0U) { 589 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Name; 590 Success = false; 591 } else { 592 Opts.setObjCDispatchMethod( 593 static_cast<CodeGenOptions::ObjCDispatchMethodKind>(Method)); 594 } 595 } 596 597 Opts.EmulatedTLS = 598 Args.hasFlag(OPT_femulated_tls, OPT_fno_emulated_tls, false); 599 600 if (Arg *A = Args.getLastArg(OPT_ftlsmodel_EQ)) { 601 StringRef Name = A->getValue(); 602 unsigned Model = llvm::StringSwitch<unsigned>(Name) 603 .Case("global-dynamic", CodeGenOptions::GeneralDynamicTLSModel) 604 .Case("local-dynamic", CodeGenOptions::LocalDynamicTLSModel) 605 .Case("initial-exec", CodeGenOptions::InitialExecTLSModel) 606 .Case("local-exec", CodeGenOptions::LocalExecTLSModel) 607 .Default(~0U); 608 if (Model == ~0U) { 609 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Name; 610 Success = false; 611 } else { 612 Opts.setDefaultTLSModel(static_cast<CodeGenOptions::TLSModel>(Model)); 613 } 614 } 615 616 if (Arg *A = Args.getLastArg(OPT_ffp_contract)) { 617 StringRef Val = A->getValue(); 618 if (Val == "fast") 619 Opts.setFPContractMode(CodeGenOptions::FPC_Fast); 620 else if (Val == "on") 621 Opts.setFPContractMode(CodeGenOptions::FPC_On); 622 else if (Val == "off") 623 Opts.setFPContractMode(CodeGenOptions::FPC_Off); 624 else 625 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Val; 626 } 627 628 if (Arg *A = Args.getLastArg(OPT_fpcc_struct_return, OPT_freg_struct_return)) { 629 if (A->getOption().matches(OPT_fpcc_struct_return)) { 630 Opts.setStructReturnConvention(CodeGenOptions::SRCK_OnStack); 631 } else { 632 assert(A->getOption().matches(OPT_freg_struct_return)); 633 Opts.setStructReturnConvention(CodeGenOptions::SRCK_InRegs); 634 } 635 } 636 637 Opts.DependentLibraries = Args.getAllArgValues(OPT_dependent_lib); 638 bool NeedLocTracking = false; 639 640 if (Arg *A = Args.getLastArg(OPT_Rpass_EQ)) { 641 Opts.OptimizationRemarkPattern = 642 GenerateOptimizationRemarkRegex(Diags, Args, A); 643 NeedLocTracking = true; 644 } 645 646 if (Arg *A = Args.getLastArg(OPT_Rpass_missed_EQ)) { 647 Opts.OptimizationRemarkMissedPattern = 648 GenerateOptimizationRemarkRegex(Diags, Args, A); 649 NeedLocTracking = true; 650 } 651 652 if (Arg *A = Args.getLastArg(OPT_Rpass_analysis_EQ)) { 653 Opts.OptimizationRemarkAnalysisPattern = 654 GenerateOptimizationRemarkRegex(Diags, Args, A); 655 NeedLocTracking = true; 656 } 657 658 // If the user requested to use a sample profile for PGO, then the 659 // backend will need to track source location information so the profile 660 // can be incorporated into the IR. 661 if (!Opts.SampleProfileFile.empty()) 662 NeedLocTracking = true; 663 664 // If the user requested a flag that requires source locations available in 665 // the backend, make sure that the backend tracks source location information. 666 if (NeedLocTracking && Opts.getDebugInfo() == CodeGenOptions::NoDebugInfo) 667 Opts.setDebugInfo(CodeGenOptions::LocTrackingOnly); 668 669 Opts.RewriteMapFiles = Args.getAllArgValues(OPT_frewrite_map_file); 670 671 // Parse -fsanitize-recover= arguments. 672 // FIXME: Report unrecoverable sanitizers incorrectly specified here. 673 parseSanitizerKinds("-fsanitize-recover=", 674 Args.getAllArgValues(OPT_fsanitize_recover_EQ), Diags, 675 Opts.SanitizeRecover); 676 parseSanitizerKinds("-fsanitize-trap=", 677 Args.getAllArgValues(OPT_fsanitize_trap_EQ), Diags, 678 Opts.SanitizeTrap); 679 680 Opts.CudaGpuBinaryFileNames = 681 Args.getAllArgValues(OPT_fcuda_include_gpubinary); 682 683 return Success; 684 } 685 686 static void ParseDependencyOutputArgs(DependencyOutputOptions &Opts, 687 ArgList &Args) { 688 using namespace options; 689 Opts.OutputFile = Args.getLastArgValue(OPT_dependency_file); 690 Opts.Targets = Args.getAllArgValues(OPT_MT); 691 Opts.IncludeSystemHeaders = Args.hasArg(OPT_sys_header_deps); 692 Opts.IncludeModuleFiles = Args.hasArg(OPT_module_file_deps); 693 Opts.UsePhonyTargets = Args.hasArg(OPT_MP); 694 Opts.ShowHeaderIncludes = Args.hasArg(OPT_H); 695 Opts.HeaderIncludeOutputFile = Args.getLastArgValue(OPT_header_include_file); 696 Opts.AddMissingHeaderDeps = Args.hasArg(OPT_MG); 697 Opts.PrintShowIncludes = Args.hasArg(OPT_show_includes); 698 Opts.DOTOutputFile = Args.getLastArgValue(OPT_dependency_dot); 699 Opts.ModuleDependencyOutputDir = 700 Args.getLastArgValue(OPT_module_dependency_dir); 701 if (Args.hasArg(OPT_MV)) 702 Opts.OutputFormat = DependencyOutputFormat::NMake; 703 } 704 705 bool clang::ParseDiagnosticArgs(DiagnosticOptions &Opts, ArgList &Args, 706 DiagnosticsEngine *Diags) { 707 using namespace options; 708 bool Success = true; 709 710 Opts.DiagnosticLogFile = Args.getLastArgValue(OPT_diagnostic_log_file); 711 if (Arg *A = 712 Args.getLastArg(OPT_diagnostic_serialized_file, OPT__serialize_diags)) 713 Opts.DiagnosticSerializationFile = A->getValue(); 714 Opts.IgnoreWarnings = Args.hasArg(OPT_w); 715 Opts.NoRewriteMacros = Args.hasArg(OPT_Wno_rewrite_macros); 716 Opts.Pedantic = Args.hasArg(OPT_pedantic); 717 Opts.PedanticErrors = Args.hasArg(OPT_pedantic_errors); 718 Opts.ShowCarets = !Args.hasArg(OPT_fno_caret_diagnostics); 719 Opts.ShowColors = Args.hasArg(OPT_fcolor_diagnostics); 720 Opts.ShowColumn = Args.hasFlag(OPT_fshow_column, 721 OPT_fno_show_column, 722 /*Default=*/true); 723 Opts.ShowFixits = !Args.hasArg(OPT_fno_diagnostics_fixit_info); 724 Opts.ShowLocation = !Args.hasArg(OPT_fno_show_source_location); 725 Opts.ShowOptionNames = Args.hasArg(OPT_fdiagnostics_show_option); 726 727 llvm::sys::Process::UseANSIEscapeCodes(Args.hasArg(OPT_fansi_escape_codes)); 728 729 // Default behavior is to not to show note include stacks. 730 Opts.ShowNoteIncludeStack = false; 731 if (Arg *A = Args.getLastArg(OPT_fdiagnostics_show_note_include_stack, 732 OPT_fno_diagnostics_show_note_include_stack)) 733 if (A->getOption().matches(OPT_fdiagnostics_show_note_include_stack)) 734 Opts.ShowNoteIncludeStack = true; 735 736 StringRef ShowOverloads = 737 Args.getLastArgValue(OPT_fshow_overloads_EQ, "all"); 738 if (ShowOverloads == "best") 739 Opts.setShowOverloads(Ovl_Best); 740 else if (ShowOverloads == "all") 741 Opts.setShowOverloads(Ovl_All); 742 else { 743 Success = false; 744 if (Diags) 745 Diags->Report(diag::err_drv_invalid_value) 746 << Args.getLastArg(OPT_fshow_overloads_EQ)->getAsString(Args) 747 << ShowOverloads; 748 } 749 750 StringRef ShowCategory = 751 Args.getLastArgValue(OPT_fdiagnostics_show_category, "none"); 752 if (ShowCategory == "none") 753 Opts.ShowCategories = 0; 754 else if (ShowCategory == "id") 755 Opts.ShowCategories = 1; 756 else if (ShowCategory == "name") 757 Opts.ShowCategories = 2; 758 else { 759 Success = false; 760 if (Diags) 761 Diags->Report(diag::err_drv_invalid_value) 762 << Args.getLastArg(OPT_fdiagnostics_show_category)->getAsString(Args) 763 << ShowCategory; 764 } 765 766 StringRef Format = 767 Args.getLastArgValue(OPT_fdiagnostics_format, "clang"); 768 if (Format == "clang") 769 Opts.setFormat(DiagnosticOptions::Clang); 770 else if (Format == "msvc") 771 Opts.setFormat(DiagnosticOptions::MSVC); 772 else if (Format == "msvc-fallback") { 773 Opts.setFormat(DiagnosticOptions::MSVC); 774 Opts.CLFallbackMode = true; 775 } else if (Format == "vi") 776 Opts.setFormat(DiagnosticOptions::Vi); 777 else { 778 Success = false; 779 if (Diags) 780 Diags->Report(diag::err_drv_invalid_value) 781 << Args.getLastArg(OPT_fdiagnostics_format)->getAsString(Args) 782 << Format; 783 } 784 785 Opts.ShowSourceRanges = Args.hasArg(OPT_fdiagnostics_print_source_range_info); 786 Opts.ShowParseableFixits = Args.hasArg(OPT_fdiagnostics_parseable_fixits); 787 Opts.ShowPresumedLoc = !Args.hasArg(OPT_fno_diagnostics_use_presumed_location); 788 Opts.VerifyDiagnostics = Args.hasArg(OPT_verify); 789 DiagnosticLevelMask DiagMask = DiagnosticLevelMask::None; 790 Success &= parseDiagnosticLevelMask("-verify-ignore-unexpected=", 791 Args.getAllArgValues(OPT_verify_ignore_unexpected_EQ), 792 Diags, DiagMask); 793 if (Args.hasArg(OPT_verify_ignore_unexpected)) 794 DiagMask = DiagnosticLevelMask::All; 795 Opts.setVerifyIgnoreUnexpected(DiagMask); 796 Opts.ElideType = !Args.hasArg(OPT_fno_elide_type); 797 Opts.ShowTemplateTree = Args.hasArg(OPT_fdiagnostics_show_template_tree); 798 Opts.ErrorLimit = getLastArgIntValue(Args, OPT_ferror_limit, 0, Diags); 799 Opts.MacroBacktraceLimit = 800 getLastArgIntValue(Args, OPT_fmacro_backtrace_limit, 801 DiagnosticOptions::DefaultMacroBacktraceLimit, Diags); 802 Opts.TemplateBacktraceLimit = getLastArgIntValue( 803 Args, OPT_ftemplate_backtrace_limit, 804 DiagnosticOptions::DefaultTemplateBacktraceLimit, Diags); 805 Opts.ConstexprBacktraceLimit = getLastArgIntValue( 806 Args, OPT_fconstexpr_backtrace_limit, 807 DiagnosticOptions::DefaultConstexprBacktraceLimit, Diags); 808 Opts.SpellCheckingLimit = getLastArgIntValue( 809 Args, OPT_fspell_checking_limit, 810 DiagnosticOptions::DefaultSpellCheckingLimit, Diags); 811 Opts.TabStop = getLastArgIntValue(Args, OPT_ftabstop, 812 DiagnosticOptions::DefaultTabStop, Diags); 813 if (Opts.TabStop == 0 || Opts.TabStop > DiagnosticOptions::MaxTabStop) { 814 Opts.TabStop = DiagnosticOptions::DefaultTabStop; 815 if (Diags) 816 Diags->Report(diag::warn_ignoring_ftabstop_value) 817 << Opts.TabStop << DiagnosticOptions::DefaultTabStop; 818 } 819 Opts.MessageLength = getLastArgIntValue(Args, OPT_fmessage_length, 0, Diags); 820 addDiagnosticArgs(Args, OPT_W_Group, OPT_W_value_Group, Opts.Warnings); 821 addDiagnosticArgs(Args, OPT_R_Group, OPT_R_value_Group, Opts.Remarks); 822 823 return Success; 824 } 825 826 static void ParseFileSystemArgs(FileSystemOptions &Opts, ArgList &Args) { 827 Opts.WorkingDir = Args.getLastArgValue(OPT_working_directory); 828 } 829 830 static InputKind ParseFrontendArgs(FrontendOptions &Opts, ArgList &Args, 831 DiagnosticsEngine &Diags) { 832 using namespace options; 833 Opts.ProgramAction = frontend::ParseSyntaxOnly; 834 if (const Arg *A = Args.getLastArg(OPT_Action_Group)) { 835 switch (A->getOption().getID()) { 836 default: 837 llvm_unreachable("Invalid option in group!"); 838 case OPT_ast_list: 839 Opts.ProgramAction = frontend::ASTDeclList; break; 840 case OPT_ast_dump: 841 case OPT_ast_dump_lookups: 842 Opts.ProgramAction = frontend::ASTDump; break; 843 case OPT_ast_print: 844 Opts.ProgramAction = frontend::ASTPrint; break; 845 case OPT_ast_view: 846 Opts.ProgramAction = frontend::ASTView; break; 847 case OPT_dump_raw_tokens: 848 Opts.ProgramAction = frontend::DumpRawTokens; break; 849 case OPT_dump_tokens: 850 Opts.ProgramAction = frontend::DumpTokens; break; 851 case OPT_S: 852 Opts.ProgramAction = frontend::EmitAssembly; break; 853 case OPT_emit_llvm_bc: 854 Opts.ProgramAction = frontend::EmitBC; break; 855 case OPT_emit_html: 856 Opts.ProgramAction = frontend::EmitHTML; break; 857 case OPT_emit_llvm: 858 Opts.ProgramAction = frontend::EmitLLVM; break; 859 case OPT_emit_llvm_only: 860 Opts.ProgramAction = frontend::EmitLLVMOnly; break; 861 case OPT_emit_codegen_only: 862 Opts.ProgramAction = frontend::EmitCodeGenOnly; break; 863 case OPT_emit_obj: 864 Opts.ProgramAction = frontend::EmitObj; break; 865 case OPT_fixit_EQ: 866 Opts.FixItSuffix = A->getValue(); 867 // fall-through! 868 case OPT_fixit: 869 Opts.ProgramAction = frontend::FixIt; break; 870 case OPT_emit_module: 871 Opts.ProgramAction = frontend::GenerateModule; break; 872 case OPT_emit_pch: 873 Opts.ProgramAction = frontend::GeneratePCH; break; 874 case OPT_emit_pth: 875 Opts.ProgramAction = frontend::GeneratePTH; break; 876 case OPT_init_only: 877 Opts.ProgramAction = frontend::InitOnly; break; 878 case OPT_fsyntax_only: 879 Opts.ProgramAction = frontend::ParseSyntaxOnly; break; 880 case OPT_module_file_info: 881 Opts.ProgramAction = frontend::ModuleFileInfo; break; 882 case OPT_verify_pch: 883 Opts.ProgramAction = frontend::VerifyPCH; break; 884 case OPT_print_decl_contexts: 885 Opts.ProgramAction = frontend::PrintDeclContext; break; 886 case OPT_print_preamble: 887 Opts.ProgramAction = frontend::PrintPreamble; break; 888 case OPT_E: 889 Opts.ProgramAction = frontend::PrintPreprocessedInput; break; 890 case OPT_rewrite_macros: 891 Opts.ProgramAction = frontend::RewriteMacros; break; 892 case OPT_rewrite_objc: 893 Opts.ProgramAction = frontend::RewriteObjC; break; 894 case OPT_rewrite_test: 895 Opts.ProgramAction = frontend::RewriteTest; break; 896 case OPT_analyze: 897 Opts.ProgramAction = frontend::RunAnalysis; break; 898 case OPT_migrate: 899 Opts.ProgramAction = frontend::MigrateSource; break; 900 case OPT_Eonly: 901 Opts.ProgramAction = frontend::RunPreprocessorOnly; break; 902 } 903 } 904 905 if (const Arg* A = Args.getLastArg(OPT_plugin)) { 906 Opts.Plugins.emplace_back(A->getValue(0)); 907 Opts.ProgramAction = frontend::PluginAction; 908 Opts.ActionName = A->getValue(); 909 910 for (const Arg *AA : Args.filtered(OPT_plugin_arg)) 911 if (AA->getValue(0) == Opts.ActionName) 912 Opts.PluginArgs.emplace_back(AA->getValue(1)); 913 } 914 915 Opts.AddPluginActions = Args.getAllArgValues(OPT_add_plugin); 916 Opts.AddPluginArgs.resize(Opts.AddPluginActions.size()); 917 for (int i = 0, e = Opts.AddPluginActions.size(); i != e; ++i) 918 for (const Arg *A : Args.filtered(OPT_plugin_arg)) 919 if (A->getValue(0) == Opts.AddPluginActions[i]) 920 Opts.AddPluginArgs[i].emplace_back(A->getValue(1)); 921 922 if (const Arg *A = Args.getLastArg(OPT_code_completion_at)) { 923 Opts.CodeCompletionAt = 924 ParsedSourceLocation::FromString(A->getValue()); 925 if (Opts.CodeCompletionAt.FileName.empty()) 926 Diags.Report(diag::err_drv_invalid_value) 927 << A->getAsString(Args) << A->getValue(); 928 } 929 Opts.DisableFree = Args.hasArg(OPT_disable_free); 930 931 Opts.OutputFile = Args.getLastArgValue(OPT_o); 932 Opts.Plugins = Args.getAllArgValues(OPT_load); 933 Opts.RelocatablePCH = Args.hasArg(OPT_relocatable_pch); 934 Opts.ShowHelp = Args.hasArg(OPT_help); 935 Opts.ShowStats = Args.hasArg(OPT_print_stats); 936 Opts.ShowTimers = Args.hasArg(OPT_ftime_report); 937 Opts.ShowVersion = Args.hasArg(OPT_version); 938 Opts.ASTMergeFiles = Args.getAllArgValues(OPT_ast_merge); 939 Opts.LLVMArgs = Args.getAllArgValues(OPT_mllvm); 940 Opts.FixWhatYouCan = Args.hasArg(OPT_fix_what_you_can); 941 Opts.FixOnlyWarnings = Args.hasArg(OPT_fix_only_warnings); 942 Opts.FixAndRecompile = Args.hasArg(OPT_fixit_recompile); 943 Opts.FixToTemporaries = Args.hasArg(OPT_fixit_to_temp); 944 Opts.ASTDumpDecls = Args.hasArg(OPT_ast_dump); 945 Opts.ASTDumpFilter = Args.getLastArgValue(OPT_ast_dump_filter); 946 Opts.ASTDumpLookups = Args.hasArg(OPT_ast_dump_lookups); 947 Opts.UseGlobalModuleIndex = !Args.hasArg(OPT_fno_modules_global_index); 948 Opts.GenerateGlobalModuleIndex = Opts.UseGlobalModuleIndex; 949 Opts.ModuleMapFiles = Args.getAllArgValues(OPT_fmodule_map_file); 950 Opts.ModuleFiles = Args.getAllArgValues(OPT_fmodule_file); 951 952 Opts.CodeCompleteOpts.IncludeMacros 953 = Args.hasArg(OPT_code_completion_macros); 954 Opts.CodeCompleteOpts.IncludeCodePatterns 955 = Args.hasArg(OPT_code_completion_patterns); 956 Opts.CodeCompleteOpts.IncludeGlobals 957 = !Args.hasArg(OPT_no_code_completion_globals); 958 Opts.CodeCompleteOpts.IncludeBriefComments 959 = Args.hasArg(OPT_code_completion_brief_comments); 960 961 Opts.OverrideRecordLayoutsFile 962 = Args.getLastArgValue(OPT_foverride_record_layout_EQ); 963 if (const Arg *A = Args.getLastArg(OPT_arcmt_check, 964 OPT_arcmt_modify, 965 OPT_arcmt_migrate)) { 966 switch (A->getOption().getID()) { 967 default: 968 llvm_unreachable("missed a case"); 969 case OPT_arcmt_check: 970 Opts.ARCMTAction = FrontendOptions::ARCMT_Check; 971 break; 972 case OPT_arcmt_modify: 973 Opts.ARCMTAction = FrontendOptions::ARCMT_Modify; 974 break; 975 case OPT_arcmt_migrate: 976 Opts.ARCMTAction = FrontendOptions::ARCMT_Migrate; 977 break; 978 } 979 } 980 Opts.MTMigrateDir = Args.getLastArgValue(OPT_mt_migrate_directory); 981 Opts.ARCMTMigrateReportOut 982 = Args.getLastArgValue(OPT_arcmt_migrate_report_output); 983 Opts.ARCMTMigrateEmitARCErrors 984 = Args.hasArg(OPT_arcmt_migrate_emit_arc_errors); 985 986 if (Args.hasArg(OPT_objcmt_migrate_literals)) 987 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_Literals; 988 if (Args.hasArg(OPT_objcmt_migrate_subscripting)) 989 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_Subscripting; 990 if (Args.hasArg(OPT_objcmt_migrate_property_dot_syntax)) 991 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_PropertyDotSyntax; 992 if (Args.hasArg(OPT_objcmt_migrate_property)) 993 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_Property; 994 if (Args.hasArg(OPT_objcmt_migrate_readonly_property)) 995 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_ReadonlyProperty; 996 if (Args.hasArg(OPT_objcmt_migrate_readwrite_property)) 997 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_ReadwriteProperty; 998 if (Args.hasArg(OPT_objcmt_migrate_annotation)) 999 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_Annotation; 1000 if (Args.hasArg(OPT_objcmt_returns_innerpointer_property)) 1001 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_ReturnsInnerPointerProperty; 1002 if (Args.hasArg(OPT_objcmt_migrate_instancetype)) 1003 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_Instancetype; 1004 if (Args.hasArg(OPT_objcmt_migrate_nsmacros)) 1005 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_NsMacros; 1006 if (Args.hasArg(OPT_objcmt_migrate_protocol_conformance)) 1007 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_ProtocolConformance; 1008 if (Args.hasArg(OPT_objcmt_atomic_property)) 1009 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_AtomicProperty; 1010 if (Args.hasArg(OPT_objcmt_ns_nonatomic_iosonly)) 1011 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_NsAtomicIOSOnlyProperty; 1012 if (Args.hasArg(OPT_objcmt_migrate_designated_init)) 1013 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_DesignatedInitializer; 1014 if (Args.hasArg(OPT_objcmt_migrate_all)) 1015 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_MigrateDecls; 1016 1017 Opts.ObjCMTWhiteListPath = Args.getLastArgValue(OPT_objcmt_whitelist_dir_path); 1018 1019 if (Opts.ARCMTAction != FrontendOptions::ARCMT_None && 1020 Opts.ObjCMTAction != FrontendOptions::ObjCMT_None) { 1021 Diags.Report(diag::err_drv_argument_not_allowed_with) 1022 << "ARC migration" << "ObjC migration"; 1023 } 1024 1025 InputKind DashX = IK_None; 1026 if (const Arg *A = Args.getLastArg(OPT_x)) { 1027 DashX = llvm::StringSwitch<InputKind>(A->getValue()) 1028 .Case("c", IK_C) 1029 .Case("cl", IK_OpenCL) 1030 .Case("cuda", IK_CUDA) 1031 .Case("c++", IK_CXX) 1032 .Case("objective-c", IK_ObjC) 1033 .Case("objective-c++", IK_ObjCXX) 1034 .Case("cpp-output", IK_PreprocessedC) 1035 .Case("assembler-with-cpp", IK_Asm) 1036 .Case("c++-cpp-output", IK_PreprocessedCXX) 1037 .Case("cuda-cpp-output", IK_PreprocessedCuda) 1038 .Case("objective-c-cpp-output", IK_PreprocessedObjC) 1039 .Case("objc-cpp-output", IK_PreprocessedObjC) 1040 .Case("objective-c++-cpp-output", IK_PreprocessedObjCXX) 1041 .Case("objc++-cpp-output", IK_PreprocessedObjCXX) 1042 .Case("c-header", IK_C) 1043 .Case("cl-header", IK_OpenCL) 1044 .Case("objective-c-header", IK_ObjC) 1045 .Case("c++-header", IK_CXX) 1046 .Case("objective-c++-header", IK_ObjCXX) 1047 .Cases("ast", "pcm", IK_AST) 1048 .Case("ir", IK_LLVM_IR) 1049 .Default(IK_None); 1050 if (DashX == IK_None) 1051 Diags.Report(diag::err_drv_invalid_value) 1052 << A->getAsString(Args) << A->getValue(); 1053 } 1054 1055 // '-' is the default input if none is given. 1056 std::vector<std::string> Inputs = Args.getAllArgValues(OPT_INPUT); 1057 Opts.Inputs.clear(); 1058 if (Inputs.empty()) 1059 Inputs.push_back("-"); 1060 for (unsigned i = 0, e = Inputs.size(); i != e; ++i) { 1061 InputKind IK = DashX; 1062 if (IK == IK_None) { 1063 IK = FrontendOptions::getInputKindForExtension( 1064 StringRef(Inputs[i]).rsplit('.').second); 1065 // FIXME: Remove this hack. 1066 if (i == 0) 1067 DashX = IK; 1068 } 1069 Opts.Inputs.emplace_back(std::move(Inputs[i]), IK); 1070 } 1071 1072 return DashX; 1073 } 1074 1075 std::string CompilerInvocation::GetResourcesPath(const char *Argv0, 1076 void *MainAddr) { 1077 std::string ClangExecutable = 1078 llvm::sys::fs::getMainExecutable(Argv0, MainAddr); 1079 StringRef Dir = llvm::sys::path::parent_path(ClangExecutable); 1080 1081 // Compute the path to the resource directory. 1082 StringRef ClangResourceDir(CLANG_RESOURCE_DIR); 1083 SmallString<128> P(Dir); 1084 if (ClangResourceDir != "") { 1085 llvm::sys::path::append(P, ClangResourceDir); 1086 } else { 1087 StringRef ClangLibdirSuffix(CLANG_LIBDIR_SUFFIX); 1088 llvm::sys::path::append(P, "..", Twine("lib") + ClangLibdirSuffix, "clang", 1089 CLANG_VERSION_STRING); 1090 } 1091 1092 return P.str(); 1093 } 1094 1095 static void ParseHeaderSearchArgs(HeaderSearchOptions &Opts, ArgList &Args) { 1096 using namespace options; 1097 Opts.Sysroot = Args.getLastArgValue(OPT_isysroot, "/"); 1098 Opts.Verbose = Args.hasArg(OPT_v); 1099 Opts.UseBuiltinIncludes = !Args.hasArg(OPT_nobuiltininc); 1100 Opts.UseStandardSystemIncludes = !Args.hasArg(OPT_nostdsysteminc); 1101 Opts.UseStandardCXXIncludes = !Args.hasArg(OPT_nostdincxx); 1102 if (const Arg *A = Args.getLastArg(OPT_stdlib_EQ)) 1103 Opts.UseLibcxx = (strcmp(A->getValue(), "libc++") == 0); 1104 Opts.ResourceDir = Args.getLastArgValue(OPT_resource_dir); 1105 Opts.ModuleCachePath = Args.getLastArgValue(OPT_fmodules_cache_path); 1106 Opts.ModuleUserBuildPath = Args.getLastArgValue(OPT_fmodules_user_build_path); 1107 Opts.DisableModuleHash = Args.hasArg(OPT_fdisable_module_hash); 1108 Opts.ImplicitModuleMaps = Args.hasArg(OPT_fimplicit_module_maps); 1109 Opts.ModuleMapFileHomeIsCwd = Args.hasArg(OPT_fmodule_map_file_home_is_cwd); 1110 Opts.ModuleCachePruneInterval = 1111 getLastArgIntValue(Args, OPT_fmodules_prune_interval, 7 * 24 * 60 * 60); 1112 Opts.ModuleCachePruneAfter = 1113 getLastArgIntValue(Args, OPT_fmodules_prune_after, 31 * 24 * 60 * 60); 1114 Opts.ModulesValidateOncePerBuildSession = 1115 Args.hasArg(OPT_fmodules_validate_once_per_build_session); 1116 Opts.BuildSessionTimestamp = 1117 getLastArgUInt64Value(Args, OPT_fbuild_session_timestamp, 0); 1118 Opts.ModulesValidateSystemHeaders = 1119 Args.hasArg(OPT_fmodules_validate_system_headers); 1120 if (const Arg *A = Args.getLastArg(OPT_fmodule_format_EQ)) 1121 Opts.ModuleFormat = A->getValue(); 1122 1123 for (const Arg *A : Args.filtered(OPT_fmodules_ignore_macro)) { 1124 StringRef MacroDef = A->getValue(); 1125 Opts.ModulesIgnoreMacros.insert(MacroDef.split('=').first); 1126 } 1127 1128 // Add -I..., -F..., and -index-header-map options in order. 1129 bool IsIndexHeaderMap = false; 1130 for (const Arg *A : Args.filtered(OPT_I, OPT_F, OPT_index_header_map)) { 1131 if (A->getOption().matches(OPT_index_header_map)) { 1132 // -index-header-map applies to the next -I or -F. 1133 IsIndexHeaderMap = true; 1134 continue; 1135 } 1136 1137 frontend::IncludeDirGroup Group = 1138 IsIndexHeaderMap ? frontend::IndexHeaderMap : frontend::Angled; 1139 1140 Opts.AddPath(A->getValue(), Group, 1141 /*IsFramework=*/A->getOption().matches(OPT_F), true); 1142 IsIndexHeaderMap = false; 1143 } 1144 1145 // Add -iprefix/-iwithprefix/-iwithprefixbefore options. 1146 StringRef Prefix = ""; // FIXME: This isn't the correct default prefix. 1147 for (const Arg *A : 1148 Args.filtered(OPT_iprefix, OPT_iwithprefix, OPT_iwithprefixbefore)) { 1149 if (A->getOption().matches(OPT_iprefix)) 1150 Prefix = A->getValue(); 1151 else if (A->getOption().matches(OPT_iwithprefix)) 1152 Opts.AddPath(Prefix.str() + A->getValue(), frontend::After, false, true); 1153 else 1154 Opts.AddPath(Prefix.str() + A->getValue(), frontend::Angled, false, true); 1155 } 1156 1157 for (const Arg *A : Args.filtered(OPT_idirafter)) 1158 Opts.AddPath(A->getValue(), frontend::After, false, true); 1159 for (const Arg *A : Args.filtered(OPT_iquote)) 1160 Opts.AddPath(A->getValue(), frontend::Quoted, false, true); 1161 for (const Arg *A : Args.filtered(OPT_isystem, OPT_iwithsysroot)) 1162 Opts.AddPath(A->getValue(), frontend::System, false, 1163 !A->getOption().matches(OPT_iwithsysroot)); 1164 for (const Arg *A : Args.filtered(OPT_iframework)) 1165 Opts.AddPath(A->getValue(), frontend::System, true, true); 1166 1167 // Add the paths for the various language specific isystem flags. 1168 for (const Arg *A : Args.filtered(OPT_c_isystem)) 1169 Opts.AddPath(A->getValue(), frontend::CSystem, false, true); 1170 for (const Arg *A : Args.filtered(OPT_cxx_isystem)) 1171 Opts.AddPath(A->getValue(), frontend::CXXSystem, false, true); 1172 for (const Arg *A : Args.filtered(OPT_objc_isystem)) 1173 Opts.AddPath(A->getValue(), frontend::ObjCSystem, false,true); 1174 for (const Arg *A : Args.filtered(OPT_objcxx_isystem)) 1175 Opts.AddPath(A->getValue(), frontend::ObjCXXSystem, false, true); 1176 1177 // Add the internal paths from a driver that detects standard include paths. 1178 for (const Arg *A : 1179 Args.filtered(OPT_internal_isystem, OPT_internal_externc_isystem)) { 1180 frontend::IncludeDirGroup Group = frontend::System; 1181 if (A->getOption().matches(OPT_internal_externc_isystem)) 1182 Group = frontend::ExternCSystem; 1183 Opts.AddPath(A->getValue(), Group, false, true); 1184 } 1185 1186 // Add the path prefixes which are implicitly treated as being system headers. 1187 for (const Arg *A : 1188 Args.filtered(OPT_system_header_prefix, OPT_no_system_header_prefix)) 1189 Opts.AddSystemHeaderPrefix( 1190 A->getValue(), A->getOption().matches(OPT_system_header_prefix)); 1191 1192 for (const Arg *A : Args.filtered(OPT_ivfsoverlay)) 1193 Opts.AddVFSOverlayFile(A->getValue()); 1194 } 1195 1196 void CompilerInvocation::setLangDefaults(LangOptions &Opts, InputKind IK, 1197 LangStandard::Kind LangStd) { 1198 // Set some properties which depend solely on the input kind; it would be nice 1199 // to move these to the language standard, and have the driver resolve the 1200 // input kind + language standard. 1201 if (IK == IK_Asm) { 1202 Opts.AsmPreprocessor = 1; 1203 } else if (IK == IK_ObjC || 1204 IK == IK_ObjCXX || 1205 IK == IK_PreprocessedObjC || 1206 IK == IK_PreprocessedObjCXX) { 1207 Opts.ObjC1 = Opts.ObjC2 = 1; 1208 } 1209 1210 if (LangStd == LangStandard::lang_unspecified) { 1211 // Based on the base language, pick one. 1212 switch (IK) { 1213 case IK_None: 1214 case IK_AST: 1215 case IK_LLVM_IR: 1216 llvm_unreachable("Invalid input kind!"); 1217 case IK_OpenCL: 1218 LangStd = LangStandard::lang_opencl; 1219 break; 1220 case IK_CUDA: 1221 case IK_PreprocessedCuda: 1222 LangStd = LangStandard::lang_cuda; 1223 break; 1224 case IK_Asm: 1225 case IK_C: 1226 case IK_PreprocessedC: 1227 case IK_ObjC: 1228 case IK_PreprocessedObjC: 1229 LangStd = LangStandard::lang_gnu11; 1230 break; 1231 case IK_CXX: 1232 case IK_PreprocessedCXX: 1233 case IK_ObjCXX: 1234 case IK_PreprocessedObjCXX: 1235 LangStd = LangStandard::lang_gnucxx98; 1236 break; 1237 } 1238 } 1239 1240 const LangStandard &Std = LangStandard::getLangStandardForKind(LangStd); 1241 Opts.LineComment = Std.hasLineComments(); 1242 Opts.C99 = Std.isC99(); 1243 Opts.C11 = Std.isC11(); 1244 Opts.CPlusPlus = Std.isCPlusPlus(); 1245 Opts.CPlusPlus11 = Std.isCPlusPlus11(); 1246 Opts.CPlusPlus14 = Std.isCPlusPlus14(); 1247 Opts.CPlusPlus1z = Std.isCPlusPlus1z(); 1248 Opts.Digraphs = Std.hasDigraphs(); 1249 Opts.GNUMode = Std.isGNUMode(); 1250 Opts.GNUInline = Std.isC89(); 1251 Opts.HexFloats = Std.hasHexFloats(); 1252 Opts.ImplicitInt = Std.hasImplicitInt(); 1253 1254 // Set OpenCL Version. 1255 Opts.OpenCL = LangStd == LangStandard::lang_opencl || IK == IK_OpenCL; 1256 if (LangStd == LangStandard::lang_opencl) 1257 Opts.OpenCLVersion = 100; 1258 else if (LangStd == LangStandard::lang_opencl11) 1259 Opts.OpenCLVersion = 110; 1260 else if (LangStd == LangStandard::lang_opencl12) 1261 Opts.OpenCLVersion = 120; 1262 else if (LangStd == LangStandard::lang_opencl20) 1263 Opts.OpenCLVersion = 200; 1264 1265 // OpenCL has some additional defaults. 1266 if (Opts.OpenCL) { 1267 Opts.AltiVec = 0; 1268 Opts.ZVector = 0; 1269 Opts.CXXOperatorNames = 1; 1270 Opts.LaxVectorConversions = 0; 1271 Opts.DefaultFPContract = 1; 1272 Opts.NativeHalfType = 1; 1273 } 1274 1275 Opts.CUDA = IK == IK_CUDA || IK == IK_PreprocessedCuda || 1276 LangStd == LangStandard::lang_cuda; 1277 1278 // OpenCL and C++ both have bool, true, false keywords. 1279 Opts.Bool = Opts.OpenCL || Opts.CPlusPlus; 1280 1281 // OpenCL has half keyword 1282 Opts.Half = Opts.OpenCL; 1283 1284 // C++ has wchar_t keyword. 1285 Opts.WChar = Opts.CPlusPlus; 1286 1287 Opts.GNUKeywords = Opts.GNUMode; 1288 Opts.CXXOperatorNames = Opts.CPlusPlus; 1289 1290 Opts.DollarIdents = !Opts.AsmPreprocessor; 1291 } 1292 1293 /// Attempt to parse a visibility value out of the given argument. 1294 static Visibility parseVisibility(Arg *arg, ArgList &args, 1295 DiagnosticsEngine &diags) { 1296 StringRef value = arg->getValue(); 1297 if (value == "default") { 1298 return DefaultVisibility; 1299 } else if (value == "hidden") { 1300 return HiddenVisibility; 1301 } else if (value == "protected") { 1302 // FIXME: diagnose if target does not support protected visibility 1303 return ProtectedVisibility; 1304 } 1305 1306 diags.Report(diag::err_drv_invalid_value) 1307 << arg->getAsString(args) << value; 1308 return DefaultVisibility; 1309 } 1310 1311 static void ParseLangArgs(LangOptions &Opts, ArgList &Args, InputKind IK, 1312 DiagnosticsEngine &Diags) { 1313 // FIXME: Cleanup per-file based stuff. 1314 LangStandard::Kind LangStd = LangStandard::lang_unspecified; 1315 if (const Arg *A = Args.getLastArg(OPT_std_EQ)) { 1316 LangStd = llvm::StringSwitch<LangStandard::Kind>(A->getValue()) 1317 #define LANGSTANDARD(id, name, desc, features) \ 1318 .Case(name, LangStandard::lang_##id) 1319 #include "clang/Frontend/LangStandards.def" 1320 .Default(LangStandard::lang_unspecified); 1321 if (LangStd == LangStandard::lang_unspecified) 1322 Diags.Report(diag::err_drv_invalid_value) 1323 << A->getAsString(Args) << A->getValue(); 1324 else { 1325 // Valid standard, check to make sure language and standard are 1326 // compatible. 1327 const LangStandard &Std = LangStandard::getLangStandardForKind(LangStd); 1328 switch (IK) { 1329 case IK_C: 1330 case IK_ObjC: 1331 case IK_PreprocessedC: 1332 case IK_PreprocessedObjC: 1333 if (!(Std.isC89() || Std.isC99())) 1334 Diags.Report(diag::err_drv_argument_not_allowed_with) 1335 << A->getAsString(Args) << "C/ObjC"; 1336 break; 1337 case IK_CXX: 1338 case IK_ObjCXX: 1339 case IK_PreprocessedCXX: 1340 case IK_PreprocessedObjCXX: 1341 if (!Std.isCPlusPlus()) 1342 Diags.Report(diag::err_drv_argument_not_allowed_with) 1343 << A->getAsString(Args) << "C++/ObjC++"; 1344 break; 1345 case IK_OpenCL: 1346 if (!Std.isC99()) 1347 Diags.Report(diag::err_drv_argument_not_allowed_with) 1348 << A->getAsString(Args) << "OpenCL"; 1349 break; 1350 case IK_CUDA: 1351 case IK_PreprocessedCuda: 1352 if (!Std.isCPlusPlus()) 1353 Diags.Report(diag::err_drv_argument_not_allowed_with) 1354 << A->getAsString(Args) << "CUDA"; 1355 break; 1356 default: 1357 break; 1358 } 1359 } 1360 } 1361 1362 // -cl-std only applies for OpenCL language standards. 1363 // Override the -std option in this case. 1364 if (const Arg *A = Args.getLastArg(OPT_cl_std_EQ)) { 1365 LangStandard::Kind OpenCLLangStd 1366 = llvm::StringSwitch<LangStandard::Kind>(A->getValue()) 1367 .Case("CL", LangStandard::lang_opencl) 1368 .Case("CL1.1", LangStandard::lang_opencl11) 1369 .Case("CL1.2", LangStandard::lang_opencl12) 1370 .Case("CL2.0", LangStandard::lang_opencl20) 1371 .Default(LangStandard::lang_unspecified); 1372 1373 if (OpenCLLangStd == LangStandard::lang_unspecified) { 1374 Diags.Report(diag::err_drv_invalid_value) 1375 << A->getAsString(Args) << A->getValue(); 1376 } 1377 else 1378 LangStd = OpenCLLangStd; 1379 } 1380 1381 CompilerInvocation::setLangDefaults(Opts, IK, LangStd); 1382 1383 // We abuse '-f[no-]gnu-keywords' to force overriding all GNU-extension 1384 // keywords. This behavior is provided by GCC's poorly named '-fasm' flag, 1385 // while a subset (the non-C++ GNU keywords) is provided by GCC's 1386 // '-fgnu-keywords'. Clang conflates the two for simplicity under the single 1387 // name, as it doesn't seem a useful distinction. 1388 Opts.GNUKeywords = Args.hasFlag(OPT_fgnu_keywords, OPT_fno_gnu_keywords, 1389 Opts.GNUKeywords); 1390 1391 if (Args.hasArg(OPT_fno_operator_names)) 1392 Opts.CXXOperatorNames = 0; 1393 1394 if (Args.hasArg(OPT_fcuda_is_device)) 1395 Opts.CUDAIsDevice = 1; 1396 1397 if (Args.hasArg(OPT_fcuda_allow_host_calls_from_host_device)) 1398 Opts.CUDAAllowHostCallsFromHostDevice = 1; 1399 1400 if (Args.hasArg(OPT_fcuda_disable_target_call_checks)) 1401 Opts.CUDADisableTargetCallChecks = 1; 1402 1403 if (Opts.ObjC1) { 1404 if (Arg *arg = Args.getLastArg(OPT_fobjc_runtime_EQ)) { 1405 StringRef value = arg->getValue(); 1406 if (Opts.ObjCRuntime.tryParse(value)) 1407 Diags.Report(diag::err_drv_unknown_objc_runtime) << value; 1408 } 1409 1410 if (Args.hasArg(OPT_fobjc_gc_only)) 1411 Opts.setGC(LangOptions::GCOnly); 1412 else if (Args.hasArg(OPT_fobjc_gc)) 1413 Opts.setGC(LangOptions::HybridGC); 1414 else if (Args.hasArg(OPT_fobjc_arc)) { 1415 Opts.ObjCAutoRefCount = 1; 1416 if (!Opts.ObjCRuntime.allowsARC()) 1417 Diags.Report(diag::err_arc_unsupported_on_runtime); 1418 1419 // Only set ObjCARCWeak if ARC is enabled. 1420 if (Args.hasArg(OPT_fobjc_runtime_has_weak)) 1421 Opts.ObjCARCWeak = 1; 1422 else 1423 Opts.ObjCARCWeak = Opts.ObjCRuntime.allowsWeak(); 1424 } 1425 1426 if (Args.hasArg(OPT_fno_objc_infer_related_result_type)) 1427 Opts.ObjCInferRelatedResultType = 0; 1428 1429 if (Args.hasArg(OPT_fobjc_subscripting_legacy_runtime)) 1430 Opts.ObjCSubscriptingLegacyRuntime = 1431 (Opts.ObjCRuntime.getKind() == ObjCRuntime::FragileMacOSX); 1432 } 1433 1434 if (Args.hasArg(OPT_fgnu89_inline)) { 1435 if (Opts.CPlusPlus) 1436 Diags.Report(diag::err_drv_argument_not_allowed_with) << "-fgnu89-inline" 1437 << "C++/ObjC++"; 1438 else 1439 Opts.GNUInline = 1; 1440 } 1441 1442 if (Args.hasArg(OPT_fapple_kext)) { 1443 if (!Opts.CPlusPlus) 1444 Diags.Report(diag::warn_c_kext); 1445 else 1446 Opts.AppleKext = 1; 1447 } 1448 1449 if (Args.hasArg(OPT_print_ivar_layout)) 1450 Opts.ObjCGCBitmapPrint = 1; 1451 if (Args.hasArg(OPT_fno_constant_cfstrings)) 1452 Opts.NoConstantCFStrings = 1; 1453 1454 if (Args.hasArg(OPT_faltivec)) 1455 Opts.AltiVec = 1; 1456 1457 if (Args.hasArg(OPT_fzvector)) 1458 Opts.ZVector = 1; 1459 1460 if (Args.hasArg(OPT_pthread)) 1461 Opts.POSIXThreads = 1; 1462 1463 // The value-visibility mode defaults to "default". 1464 if (Arg *visOpt = Args.getLastArg(OPT_fvisibility)) { 1465 Opts.setValueVisibilityMode(parseVisibility(visOpt, Args, Diags)); 1466 } else { 1467 Opts.setValueVisibilityMode(DefaultVisibility); 1468 } 1469 1470 // The type-visibility mode defaults to the value-visibility mode. 1471 if (Arg *typeVisOpt = Args.getLastArg(OPT_ftype_visibility)) { 1472 Opts.setTypeVisibilityMode(parseVisibility(typeVisOpt, Args, Diags)); 1473 } else { 1474 Opts.setTypeVisibilityMode(Opts.getValueVisibilityMode()); 1475 } 1476 1477 if (Args.hasArg(OPT_fvisibility_inlines_hidden)) 1478 Opts.InlineVisibilityHidden = 1; 1479 1480 if (Args.hasArg(OPT_ftrapv)) { 1481 Opts.setSignedOverflowBehavior(LangOptions::SOB_Trapping); 1482 // Set the handler, if one is specified. 1483 Opts.OverflowHandler = 1484 Args.getLastArgValue(OPT_ftrapv_handler); 1485 } 1486 else if (Args.hasArg(OPT_fwrapv)) 1487 Opts.setSignedOverflowBehavior(LangOptions::SOB_Defined); 1488 1489 Opts.MSVCCompat = Args.hasArg(OPT_fms_compatibility); 1490 Opts.MicrosoftExt = Opts.MSVCCompat || Args.hasArg(OPT_fms_extensions); 1491 Opts.AsmBlocks = Args.hasArg(OPT_fasm_blocks) || Opts.MicrosoftExt; 1492 Opts.MSCompatibilityVersion = 0; 1493 if (const Arg *A = Args.getLastArg(OPT_fms_compatibility_version)) { 1494 VersionTuple VT; 1495 if (VT.tryParse(A->getValue())) 1496 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) 1497 << A->getValue(); 1498 Opts.MSCompatibilityVersion = VT.getMajor() * 10000000 + 1499 VT.getMinor().getValueOr(0) * 100000 + 1500 VT.getSubminor().getValueOr(0); 1501 } 1502 1503 // Mimicing gcc's behavior, trigraphs are only enabled if -trigraphs 1504 // is specified, or -std is set to a conforming mode. 1505 // Trigraphs are disabled by default in c++1z onwards. 1506 Opts.Trigraphs = !Opts.GNUMode && !Opts.MSVCCompat && !Opts.CPlusPlus1z; 1507 Opts.Trigraphs = 1508 Args.hasFlag(OPT_ftrigraphs, OPT_fno_trigraphs, Opts.Trigraphs); 1509 1510 Opts.DollarIdents = Args.hasFlag(OPT_fdollars_in_identifiers, 1511 OPT_fno_dollars_in_identifiers, 1512 Opts.DollarIdents); 1513 Opts.PascalStrings = Args.hasArg(OPT_fpascal_strings); 1514 Opts.VtorDispMode = getLastArgIntValue(Args, OPT_vtordisp_mode_EQ, 1, Diags); 1515 Opts.Borland = Args.hasArg(OPT_fborland_extensions); 1516 Opts.WritableStrings = Args.hasArg(OPT_fwritable_strings); 1517 Opts.ConstStrings = Args.hasFlag(OPT_fconst_strings, OPT_fno_const_strings, 1518 Opts.ConstStrings); 1519 if (Args.hasArg(OPT_fno_lax_vector_conversions)) 1520 Opts.LaxVectorConversions = 0; 1521 if (Args.hasArg(OPT_fno_threadsafe_statics)) 1522 Opts.ThreadsafeStatics = 0; 1523 Opts.Exceptions = Args.hasArg(OPT_fexceptions); 1524 Opts.ObjCExceptions = Args.hasArg(OPT_fobjc_exceptions); 1525 Opts.CXXExceptions = Args.hasArg(OPT_fcxx_exceptions); 1526 Opts.SjLjExceptions = Args.hasArg(OPT_fsjlj_exceptions); 1527 Opts.TraditionalCPP = Args.hasArg(OPT_traditional_cpp); 1528 1529 Opts.RTTI = !Args.hasArg(OPT_fno_rtti); 1530 Opts.RTTIData = Opts.RTTI && !Args.hasArg(OPT_fno_rtti_data); 1531 Opts.Blocks = Args.hasArg(OPT_fblocks); 1532 Opts.BlocksRuntimeOptional = Args.hasArg(OPT_fblocks_runtime_optional); 1533 Opts.Modules = Args.hasArg(OPT_fmodules); 1534 Opts.ModulesStrictDeclUse = Args.hasArg(OPT_fmodules_strict_decluse); 1535 Opts.ModulesDeclUse = 1536 Args.hasArg(OPT_fmodules_decluse) || Opts.ModulesStrictDeclUse; 1537 Opts.ModulesLocalVisibility = 1538 Args.hasArg(OPT_fmodules_local_submodule_visibility); 1539 Opts.ModulesHideInternalLinkage = 1540 !Args.hasArg(OPT_fno_modules_hide_internal_linkage); 1541 Opts.ModulesSearchAll = Opts.Modules && 1542 !Args.hasArg(OPT_fno_modules_search_all) && 1543 Args.hasArg(OPT_fmodules_search_all); 1544 Opts.ModulesErrorRecovery = !Args.hasArg(OPT_fno_modules_error_recovery); 1545 Opts.ImplicitModules = !Args.hasArg(OPT_fno_implicit_modules); 1546 Opts.CharIsSigned = Opts.OpenCL || !Args.hasArg(OPT_fno_signed_char); 1547 Opts.WChar = Opts.CPlusPlus && !Args.hasArg(OPT_fno_wchar); 1548 Opts.ShortWChar = Args.hasFlag(OPT_fshort_wchar, OPT_fno_short_wchar, false); 1549 Opts.ShortEnums = Args.hasArg(OPT_fshort_enums); 1550 Opts.Freestanding = Args.hasArg(OPT_ffreestanding); 1551 Opts.NoBuiltin = Args.hasArg(OPT_fno_builtin) || Opts.Freestanding; 1552 Opts.NoMathBuiltin = Args.hasArg(OPT_fno_math_builtin); 1553 Opts.AssumeSaneOperatorNew = !Args.hasArg(OPT_fno_assume_sane_operator_new); 1554 Opts.SizedDeallocation = Args.hasArg(OPT_fsized_deallocation); 1555 Opts.ConceptsTS = Args.hasArg(OPT_fconcepts_ts); 1556 Opts.HeinousExtensions = Args.hasArg(OPT_fheinous_gnu_extensions); 1557 Opts.AccessControl = !Args.hasArg(OPT_fno_access_control); 1558 Opts.ElideConstructors = !Args.hasArg(OPT_fno_elide_constructors); 1559 Opts.MathErrno = !Opts.OpenCL && Args.hasArg(OPT_fmath_errno); 1560 Opts.InstantiationDepth = 1561 getLastArgIntValue(Args, OPT_ftemplate_depth, 256, Diags); 1562 Opts.ArrowDepth = 1563 getLastArgIntValue(Args, OPT_foperator_arrow_depth, 256, Diags); 1564 Opts.ConstexprCallDepth = 1565 getLastArgIntValue(Args, OPT_fconstexpr_depth, 512, Diags); 1566 Opts.ConstexprStepLimit = 1567 getLastArgIntValue(Args, OPT_fconstexpr_steps, 1048576, Diags); 1568 Opts.BracketDepth = getLastArgIntValue(Args, OPT_fbracket_depth, 256, Diags); 1569 Opts.DelayedTemplateParsing = Args.hasArg(OPT_fdelayed_template_parsing); 1570 Opts.NumLargeByValueCopy = 1571 getLastArgIntValue(Args, OPT_Wlarge_by_value_copy_EQ, 0, Diags); 1572 Opts.MSBitfields = Args.hasArg(OPT_mms_bitfields); 1573 Opts.ObjCConstantStringClass = 1574 Args.getLastArgValue(OPT_fconstant_string_class); 1575 Opts.ObjCDefaultSynthProperties = 1576 !Args.hasArg(OPT_disable_objc_default_synthesize_properties); 1577 Opts.EncodeExtendedBlockSig = 1578 Args.hasArg(OPT_fencode_extended_block_signature); 1579 Opts.EmitAllDecls = Args.hasArg(OPT_femit_all_decls); 1580 Opts.PackStruct = getLastArgIntValue(Args, OPT_fpack_struct_EQ, 0, Diags); 1581 Opts.MaxTypeAlign = getLastArgIntValue(Args, OPT_fmax_type_align_EQ, 0, Diags); 1582 Opts.PICLevel = getLastArgIntValue(Args, OPT_pic_level, 0, Diags); 1583 Opts.PIELevel = getLastArgIntValue(Args, OPT_pie_level, 0, Diags); 1584 Opts.Static = Args.hasArg(OPT_static_define); 1585 Opts.DumpRecordLayoutsSimple = Args.hasArg(OPT_fdump_record_layouts_simple); 1586 Opts.DumpRecordLayouts = Opts.DumpRecordLayoutsSimple 1587 || Args.hasArg(OPT_fdump_record_layouts); 1588 Opts.DumpVTableLayouts = Args.hasArg(OPT_fdump_vtable_layouts); 1589 Opts.SpellChecking = !Args.hasArg(OPT_fno_spell_checking); 1590 Opts.NoBitFieldTypeAlign = Args.hasArg(OPT_fno_bitfield_type_align); 1591 Opts.SinglePrecisionConstants = Args.hasArg(OPT_cl_single_precision_constant); 1592 Opts.FastRelaxedMath = Args.hasArg(OPT_cl_fast_relaxed_math); 1593 Opts.MRTD = Args.hasArg(OPT_mrtd); 1594 Opts.HexagonQdsp6Compat = Args.hasArg(OPT_mqdsp6_compat); 1595 Opts.FakeAddressSpaceMap = Args.hasArg(OPT_ffake_address_space_map); 1596 Opts.ParseUnknownAnytype = Args.hasArg(OPT_funknown_anytype); 1597 Opts.DebuggerSupport = Args.hasArg(OPT_fdebugger_support); 1598 Opts.DebuggerCastResultToId = Args.hasArg(OPT_fdebugger_cast_result_to_id); 1599 Opts.DebuggerObjCLiteral = Args.hasArg(OPT_fdebugger_objc_literal); 1600 Opts.ApplePragmaPack = Args.hasArg(OPT_fapple_pragma_pack); 1601 Opts.CurrentModule = Args.getLastArgValue(OPT_fmodule_name); 1602 Opts.AppExt = Args.hasArg(OPT_fapplication_extension); 1603 Opts.ImplementationOfModule = 1604 Args.getLastArgValue(OPT_fmodule_implementation_of); 1605 Opts.ModuleFeatures = Args.getAllArgValues(OPT_fmodule_feature); 1606 std::sort(Opts.ModuleFeatures.begin(), Opts.ModuleFeatures.end()); 1607 Opts.NativeHalfType |= Args.hasArg(OPT_fnative_half_type); 1608 Opts.HalfArgsAndReturns = Args.hasArg(OPT_fallow_half_arguments_and_returns); 1609 Opts.GNUAsm = !Args.hasArg(OPT_fno_gnu_inline_asm); 1610 1611 if (!Opts.CurrentModule.empty() && !Opts.ImplementationOfModule.empty() && 1612 Opts.CurrentModule != Opts.ImplementationOfModule) { 1613 Diags.Report(diag::err_conflicting_module_names) 1614 << Opts.CurrentModule << Opts.ImplementationOfModule; 1615 } 1616 1617 // For now, we only support local submodule visibility in C++ (because we 1618 // heavily depend on the ODR for merging redefinitions). 1619 if (Opts.ModulesLocalVisibility && !Opts.CPlusPlus) 1620 Diags.Report(diag::err_drv_argument_not_allowed_with) 1621 << "-fmodules-local-submodule-visibility" << "C"; 1622 1623 if (Arg *A = Args.getLastArg(OPT_faddress_space_map_mangling_EQ)) { 1624 switch (llvm::StringSwitch<unsigned>(A->getValue()) 1625 .Case("target", LangOptions::ASMM_Target) 1626 .Case("no", LangOptions::ASMM_Off) 1627 .Case("yes", LangOptions::ASMM_On) 1628 .Default(255)) { 1629 default: 1630 Diags.Report(diag::err_drv_invalid_value) 1631 << "-faddress-space-map-mangling=" << A->getValue(); 1632 break; 1633 case LangOptions::ASMM_Target: 1634 Opts.setAddressSpaceMapMangling(LangOptions::ASMM_Target); 1635 break; 1636 case LangOptions::ASMM_On: 1637 Opts.setAddressSpaceMapMangling(LangOptions::ASMM_On); 1638 break; 1639 case LangOptions::ASMM_Off: 1640 Opts.setAddressSpaceMapMangling(LangOptions::ASMM_Off); 1641 break; 1642 } 1643 } 1644 1645 if (Arg *A = Args.getLastArg(OPT_fms_memptr_rep_EQ)) { 1646 LangOptions::PragmaMSPointersToMembersKind InheritanceModel = 1647 llvm::StringSwitch<LangOptions::PragmaMSPointersToMembersKind>( 1648 A->getValue()) 1649 .Case("single", 1650 LangOptions::PPTMK_FullGeneralitySingleInheritance) 1651 .Case("multiple", 1652 LangOptions::PPTMK_FullGeneralityMultipleInheritance) 1653 .Case("virtual", 1654 LangOptions::PPTMK_FullGeneralityVirtualInheritance) 1655 .Default(LangOptions::PPTMK_BestCase); 1656 if (InheritanceModel == LangOptions::PPTMK_BestCase) 1657 Diags.Report(diag::err_drv_invalid_value) 1658 << "-fms-memptr-rep=" << A->getValue(); 1659 1660 Opts.setMSPointerToMemberRepresentationMethod(InheritanceModel); 1661 } 1662 1663 // Check if -fopenmp is specified. 1664 Opts.OpenMP = Args.hasArg(options::OPT_fopenmp); 1665 Opts.OpenMPUseTLS = 1666 Opts.OpenMP && !Args.hasArg(options::OPT_fnoopenmp_use_tls); 1667 1668 // Record whether the __DEPRECATED define was requested. 1669 Opts.Deprecated = Args.hasFlag(OPT_fdeprecated_macro, 1670 OPT_fno_deprecated_macro, 1671 Opts.Deprecated); 1672 1673 // FIXME: Eliminate this dependency. 1674 unsigned Opt = getOptimizationLevel(Args, IK, Diags), 1675 OptSize = getOptimizationLevelSize(Args); 1676 Opts.Optimize = Opt != 0; 1677 Opts.OptimizeSize = OptSize != 0; 1678 1679 // This is the __NO_INLINE__ define, which just depends on things like the 1680 // optimization level and -fno-inline, not actually whether the backend has 1681 // inlining enabled. 1682 Opts.NoInlineDefine = !Opt || Args.hasArg(OPT_fno_inline); 1683 1684 Opts.FastMath = Args.hasArg(OPT_ffast_math) || 1685 Args.hasArg(OPT_cl_fast_relaxed_math); 1686 Opts.FiniteMathOnly = Args.hasArg(OPT_ffinite_math_only) || 1687 Args.hasArg(OPT_cl_finite_math_only) || 1688 Args.hasArg(OPT_cl_fast_relaxed_math); 1689 1690 Opts.RetainCommentsFromSystemHeaders = 1691 Args.hasArg(OPT_fretain_comments_from_system_headers); 1692 1693 unsigned SSP = getLastArgIntValue(Args, OPT_stack_protector, 0, Diags); 1694 switch (SSP) { 1695 default: 1696 Diags.Report(diag::err_drv_invalid_value) 1697 << Args.getLastArg(OPT_stack_protector)->getAsString(Args) << SSP; 1698 break; 1699 case 0: Opts.setStackProtector(LangOptions::SSPOff); break; 1700 case 1: Opts.setStackProtector(LangOptions::SSPOn); break; 1701 case 2: Opts.setStackProtector(LangOptions::SSPStrong); break; 1702 case 3: Opts.setStackProtector(LangOptions::SSPReq); break; 1703 } 1704 1705 // Parse -fsanitize= arguments. 1706 parseSanitizerKinds("-fsanitize=", Args.getAllArgValues(OPT_fsanitize_EQ), 1707 Diags, Opts.Sanitize); 1708 // -fsanitize-address-field-padding=N has to be a LangOpt, parse it here. 1709 Opts.SanitizeAddressFieldPadding = 1710 getLastArgIntValue(Args, OPT_fsanitize_address_field_padding, 0, Diags); 1711 Opts.SanitizerBlacklistFiles = Args.getAllArgValues(OPT_fsanitize_blacklist); 1712 } 1713 1714 static void ParsePreprocessorArgs(PreprocessorOptions &Opts, ArgList &Args, 1715 FileManager &FileMgr, 1716 DiagnosticsEngine &Diags) { 1717 using namespace options; 1718 Opts.ImplicitPCHInclude = Args.getLastArgValue(OPT_include_pch); 1719 Opts.ImplicitPTHInclude = Args.getLastArgValue(OPT_include_pth); 1720 if (const Arg *A = Args.getLastArg(OPT_token_cache)) 1721 Opts.TokenCache = A->getValue(); 1722 else 1723 Opts.TokenCache = Opts.ImplicitPTHInclude; 1724 Opts.UsePredefines = !Args.hasArg(OPT_undef); 1725 Opts.DetailedRecord = Args.hasArg(OPT_detailed_preprocessing_record); 1726 Opts.DisablePCHValidation = Args.hasArg(OPT_fno_validate_pch); 1727 1728 Opts.DumpDeserializedPCHDecls = Args.hasArg(OPT_dump_deserialized_pch_decls); 1729 for (const Arg *A : Args.filtered(OPT_error_on_deserialized_pch_decl)) 1730 Opts.DeserializedPCHDeclsToErrorOn.insert(A->getValue()); 1731 1732 if (const Arg *A = Args.getLastArg(OPT_preamble_bytes_EQ)) { 1733 StringRef Value(A->getValue()); 1734 size_t Comma = Value.find(','); 1735 unsigned Bytes = 0; 1736 unsigned EndOfLine = 0; 1737 1738 if (Comma == StringRef::npos || 1739 Value.substr(0, Comma).getAsInteger(10, Bytes) || 1740 Value.substr(Comma + 1).getAsInteger(10, EndOfLine)) 1741 Diags.Report(diag::err_drv_preamble_format); 1742 else { 1743 Opts.PrecompiledPreambleBytes.first = Bytes; 1744 Opts.PrecompiledPreambleBytes.second = (EndOfLine != 0); 1745 } 1746 } 1747 1748 // Add macros from the command line. 1749 for (const Arg *A : Args.filtered(OPT_D, OPT_U)) { 1750 if (A->getOption().matches(OPT_D)) 1751 Opts.addMacroDef(A->getValue()); 1752 else 1753 Opts.addMacroUndef(A->getValue()); 1754 } 1755 1756 Opts.MacroIncludes = Args.getAllArgValues(OPT_imacros); 1757 1758 // Add the ordered list of -includes. 1759 for (const Arg *A : Args.filtered(OPT_include)) 1760 Opts.Includes.emplace_back(A->getValue()); 1761 1762 for (const Arg *A : Args.filtered(OPT_chain_include)) 1763 Opts.ChainedIncludes.emplace_back(A->getValue()); 1764 1765 // Include 'altivec.h' if -faltivec option present 1766 if (Args.hasArg(OPT_faltivec)) 1767 Opts.Includes.emplace_back("altivec.h"); 1768 1769 for (const Arg *A : Args.filtered(OPT_remap_file)) { 1770 std::pair<StringRef, StringRef> Split = StringRef(A->getValue()).split(';'); 1771 1772 if (Split.second.empty()) { 1773 Diags.Report(diag::err_drv_invalid_remap_file) << A->getAsString(Args); 1774 continue; 1775 } 1776 1777 Opts.addRemappedFile(Split.first, Split.second); 1778 } 1779 1780 if (Arg *A = Args.getLastArg(OPT_fobjc_arc_cxxlib_EQ)) { 1781 StringRef Name = A->getValue(); 1782 unsigned Library = llvm::StringSwitch<unsigned>(Name) 1783 .Case("libc++", ARCXX_libcxx) 1784 .Case("libstdc++", ARCXX_libstdcxx) 1785 .Case("none", ARCXX_nolib) 1786 .Default(~0U); 1787 if (Library == ~0U) 1788 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Name; 1789 else 1790 Opts.ObjCXXARCStandardLibrary = (ObjCXXARCStandardLibraryKind)Library; 1791 } 1792 } 1793 1794 static void ParsePreprocessorOutputArgs(PreprocessorOutputOptions &Opts, 1795 ArgList &Args, 1796 frontend::ActionKind Action) { 1797 using namespace options; 1798 1799 switch (Action) { 1800 case frontend::ASTDeclList: 1801 case frontend::ASTDump: 1802 case frontend::ASTPrint: 1803 case frontend::ASTView: 1804 case frontend::EmitAssembly: 1805 case frontend::EmitBC: 1806 case frontend::EmitHTML: 1807 case frontend::EmitLLVM: 1808 case frontend::EmitLLVMOnly: 1809 case frontend::EmitCodeGenOnly: 1810 case frontend::EmitObj: 1811 case frontend::FixIt: 1812 case frontend::GenerateModule: 1813 case frontend::GeneratePCH: 1814 case frontend::GeneratePTH: 1815 case frontend::ParseSyntaxOnly: 1816 case frontend::ModuleFileInfo: 1817 case frontend::VerifyPCH: 1818 case frontend::PluginAction: 1819 case frontend::PrintDeclContext: 1820 case frontend::RewriteObjC: 1821 case frontend::RewriteTest: 1822 case frontend::RunAnalysis: 1823 case frontend::MigrateSource: 1824 Opts.ShowCPP = 0; 1825 break; 1826 1827 case frontend::DumpRawTokens: 1828 case frontend::DumpTokens: 1829 case frontend::InitOnly: 1830 case frontend::PrintPreamble: 1831 case frontend::PrintPreprocessedInput: 1832 case frontend::RewriteMacros: 1833 case frontend::RunPreprocessorOnly: 1834 Opts.ShowCPP = !Args.hasArg(OPT_dM); 1835 break; 1836 } 1837 1838 Opts.ShowComments = Args.hasArg(OPT_C); 1839 Opts.ShowLineMarkers = !Args.hasArg(OPT_P); 1840 Opts.ShowMacroComments = Args.hasArg(OPT_CC); 1841 Opts.ShowMacros = Args.hasArg(OPT_dM) || Args.hasArg(OPT_dD); 1842 Opts.RewriteIncludes = Args.hasArg(OPT_frewrite_includes); 1843 Opts.UseLineDirectives = Args.hasArg(OPT_fuse_line_directives); 1844 } 1845 1846 static void ParseTargetArgs(TargetOptions &Opts, ArgList &Args) { 1847 using namespace options; 1848 Opts.ABI = Args.getLastArgValue(OPT_target_abi); 1849 Opts.CPU = Args.getLastArgValue(OPT_target_cpu); 1850 Opts.FPMath = Args.getLastArgValue(OPT_mfpmath); 1851 Opts.FeaturesAsWritten = Args.getAllArgValues(OPT_target_feature); 1852 Opts.LinkerVersion = Args.getLastArgValue(OPT_target_linker_version); 1853 Opts.Triple = llvm::Triple::normalize(Args.getLastArgValue(OPT_triple)); 1854 Opts.Reciprocals = Args.getAllArgValues(OPT_mrecip_EQ); 1855 // Use the default target triple if unspecified. 1856 if (Opts.Triple.empty()) 1857 Opts.Triple = llvm::sys::getDefaultTargetTriple(); 1858 } 1859 1860 bool CompilerInvocation::CreateFromArgs(CompilerInvocation &Res, 1861 const char *const *ArgBegin, 1862 const char *const *ArgEnd, 1863 DiagnosticsEngine &Diags) { 1864 bool Success = true; 1865 1866 // Parse the arguments. 1867 std::unique_ptr<OptTable> Opts(createDriverOptTable()); 1868 const unsigned IncludedFlagsBitmask = options::CC1Option; 1869 unsigned MissingArgIndex, MissingArgCount; 1870 InputArgList Args = 1871 Opts->ParseArgs(llvm::makeArrayRef(ArgBegin, ArgEnd), MissingArgIndex, 1872 MissingArgCount, IncludedFlagsBitmask); 1873 1874 // Check for missing argument error. 1875 if (MissingArgCount) { 1876 Diags.Report(diag::err_drv_missing_argument) 1877 << Args.getArgString(MissingArgIndex) << MissingArgCount; 1878 Success = false; 1879 } 1880 1881 // Issue errors on unknown arguments. 1882 for (const Arg *A : Args.filtered(OPT_UNKNOWN)) { 1883 Diags.Report(diag::err_drv_unknown_argument) << A->getAsString(Args); 1884 Success = false; 1885 } 1886 1887 Success &= ParseAnalyzerArgs(*Res.getAnalyzerOpts(), Args, Diags); 1888 Success &= ParseMigratorArgs(Res.getMigratorOpts(), Args); 1889 ParseDependencyOutputArgs(Res.getDependencyOutputOpts(), Args); 1890 Success &= ParseDiagnosticArgs(Res.getDiagnosticOpts(), Args, &Diags); 1891 ParseCommentArgs(Res.getLangOpts()->CommentOpts, Args); 1892 ParseFileSystemArgs(Res.getFileSystemOpts(), Args); 1893 // FIXME: We shouldn't have to pass the DashX option around here 1894 InputKind DashX = ParseFrontendArgs(Res.getFrontendOpts(), Args, Diags); 1895 ParseTargetArgs(Res.getTargetOpts(), Args); 1896 Success &= ParseCodeGenArgs(Res.getCodeGenOpts(), Args, DashX, Diags, 1897 Res.getTargetOpts()); 1898 ParseHeaderSearchArgs(Res.getHeaderSearchOpts(), Args); 1899 if (DashX == IK_AST || DashX == IK_LLVM_IR) { 1900 // ObjCAAutoRefCount and Sanitize LangOpts are used to setup the 1901 // PassManager in BackendUtil.cpp. They need to be initializd no matter 1902 // what the input type is. 1903 if (Args.hasArg(OPT_fobjc_arc)) 1904 Res.getLangOpts()->ObjCAutoRefCount = 1; 1905 parseSanitizerKinds("-fsanitize=", Args.getAllArgValues(OPT_fsanitize_EQ), 1906 Diags, Res.getLangOpts()->Sanitize); 1907 } else { 1908 // Other LangOpts are only initialzed when the input is not AST or LLVM IR. 1909 ParseLangArgs(*Res.getLangOpts(), Args, DashX, Diags); 1910 if (Res.getFrontendOpts().ProgramAction == frontend::RewriteObjC) 1911 Res.getLangOpts()->ObjCExceptions = 1; 1912 } 1913 // FIXME: ParsePreprocessorArgs uses the FileManager to read the contents of 1914 // PCH file and find the original header name. Remove the need to do that in 1915 // ParsePreprocessorArgs and remove the FileManager 1916 // parameters from the function and the "FileManager.h" #include. 1917 FileManager FileMgr(Res.getFileSystemOpts()); 1918 ParsePreprocessorArgs(Res.getPreprocessorOpts(), Args, FileMgr, Diags); 1919 ParsePreprocessorOutputArgs(Res.getPreprocessorOutputOpts(), Args, 1920 Res.getFrontendOpts().ProgramAction); 1921 return Success; 1922 } 1923 1924 namespace { 1925 1926 class ModuleSignature { 1927 SmallVector<uint64_t, 16> Data; 1928 unsigned CurBit; 1929 uint64_t CurValue; 1930 1931 public: 1932 ModuleSignature() : CurBit(0), CurValue(0) { } 1933 1934 void add(uint64_t Value, unsigned Bits); 1935 void add(StringRef Value); 1936 void flush(); 1937 1938 llvm::APInt getAsInteger() const; 1939 }; 1940 } 1941 1942 void ModuleSignature::add(uint64_t Value, unsigned int NumBits) { 1943 CurValue |= Value << CurBit; 1944 if (CurBit + NumBits < 64) { 1945 CurBit += NumBits; 1946 return; 1947 } 1948 1949 // Add the current word. 1950 Data.push_back(CurValue); 1951 1952 if (CurBit) 1953 CurValue = Value >> (64-CurBit); 1954 else 1955 CurValue = 0; 1956 CurBit = (CurBit+NumBits) & 63; 1957 } 1958 1959 void ModuleSignature::flush() { 1960 if (CurBit == 0) 1961 return; 1962 1963 Data.push_back(CurValue); 1964 CurBit = 0; 1965 CurValue = 0; 1966 } 1967 1968 void ModuleSignature::add(StringRef Value) { 1969 for (StringRef::iterator I = Value.begin(), IEnd = Value.end(); I != IEnd;++I) 1970 add(*I, 8); 1971 } 1972 1973 llvm::APInt ModuleSignature::getAsInteger() const { 1974 return llvm::APInt(Data.size() * 64, Data); 1975 } 1976 1977 std::string CompilerInvocation::getModuleHash() const { 1978 // Note: For QoI reasons, the things we use as a hash here should all be 1979 // dumped via the -module-info flag. 1980 using llvm::hash_code; 1981 using llvm::hash_value; 1982 using llvm::hash_combine; 1983 1984 // Start the signature with the compiler version. 1985 // FIXME: We'd rather use something more cryptographically sound than 1986 // CityHash, but this will do for now. 1987 hash_code code = hash_value(getClangFullRepositoryVersion()); 1988 1989 // Extend the signature with the language options 1990 #define LANGOPT(Name, Bits, Default, Description) \ 1991 code = hash_combine(code, LangOpts->Name); 1992 #define ENUM_LANGOPT(Name, Type, Bits, Default, Description) \ 1993 code = hash_combine(code, static_cast<unsigned>(LangOpts->get##Name())); 1994 #define BENIGN_LANGOPT(Name, Bits, Default, Description) 1995 #define BENIGN_ENUM_LANGOPT(Name, Type, Bits, Default, Description) 1996 #include "clang/Basic/LangOptions.def" 1997 1998 for (StringRef Feature : LangOpts->ModuleFeatures) 1999 code = hash_combine(code, Feature); 2000 2001 // Extend the signature with the target options. 2002 code = hash_combine(code, TargetOpts->Triple, TargetOpts->CPU, 2003 TargetOpts->ABI); 2004 for (unsigned i = 0, n = TargetOpts->FeaturesAsWritten.size(); i != n; ++i) 2005 code = hash_combine(code, TargetOpts->FeaturesAsWritten[i]); 2006 2007 // Extend the signature with preprocessor options. 2008 const PreprocessorOptions &ppOpts = getPreprocessorOpts(); 2009 const HeaderSearchOptions &hsOpts = getHeaderSearchOpts(); 2010 code = hash_combine(code, ppOpts.UsePredefines, ppOpts.DetailedRecord); 2011 2012 for (std::vector<std::pair<std::string, bool/*isUndef*/> >::const_iterator 2013 I = getPreprocessorOpts().Macros.begin(), 2014 IEnd = getPreprocessorOpts().Macros.end(); 2015 I != IEnd; ++I) { 2016 // If we're supposed to ignore this macro for the purposes of modules, 2017 // don't put it into the hash. 2018 if (!hsOpts.ModulesIgnoreMacros.empty()) { 2019 // Check whether we're ignoring this macro. 2020 StringRef MacroDef = I->first; 2021 if (hsOpts.ModulesIgnoreMacros.count(MacroDef.split('=').first)) 2022 continue; 2023 } 2024 2025 code = hash_combine(code, I->first, I->second); 2026 } 2027 2028 // Extend the signature with the sysroot. 2029 code = hash_combine(code, hsOpts.Sysroot, hsOpts.UseBuiltinIncludes, 2030 hsOpts.UseStandardSystemIncludes, 2031 hsOpts.UseStandardCXXIncludes, 2032 hsOpts.UseLibcxx); 2033 code = hash_combine(code, hsOpts.ResourceDir); 2034 2035 // Extend the signature with the user build path. 2036 code = hash_combine(code, hsOpts.ModuleUserBuildPath); 2037 2038 // Darwin-specific hack: if we have a sysroot, use the contents and 2039 // modification time of 2040 // $sysroot/System/Library/CoreServices/SystemVersion.plist 2041 // as part of the module hash. 2042 if (!hsOpts.Sysroot.empty()) { 2043 SmallString<128> systemVersionFile; 2044 systemVersionFile += hsOpts.Sysroot; 2045 llvm::sys::path::append(systemVersionFile, "System"); 2046 llvm::sys::path::append(systemVersionFile, "Library"); 2047 llvm::sys::path::append(systemVersionFile, "CoreServices"); 2048 llvm::sys::path::append(systemVersionFile, "SystemVersion.plist"); 2049 2050 llvm::ErrorOr<std::unique_ptr<llvm::MemoryBuffer>> buffer = 2051 llvm::MemoryBuffer::getFile(systemVersionFile); 2052 if (buffer) { 2053 code = hash_combine(code, buffer.get()->getBuffer()); 2054 2055 struct stat statBuf; 2056 if (stat(systemVersionFile.c_str(), &statBuf) == 0) 2057 code = hash_combine(code, statBuf.st_mtime); 2058 } 2059 } 2060 2061 return llvm::APInt(64, code).toString(36, /*Signed=*/false); 2062 } 2063 2064 namespace clang { 2065 2066 template<typename IntTy> 2067 static IntTy getLastArgIntValueImpl(const ArgList &Args, OptSpecifier Id, 2068 IntTy Default, 2069 DiagnosticsEngine *Diags) { 2070 IntTy Res = Default; 2071 if (Arg *A = Args.getLastArg(Id)) { 2072 if (StringRef(A->getValue()).getAsInteger(10, Res)) { 2073 if (Diags) 2074 Diags->Report(diag::err_drv_invalid_int_value) << A->getAsString(Args) 2075 << A->getValue(); 2076 } 2077 } 2078 return Res; 2079 } 2080 2081 2082 // Declared in clang/Frontend/Utils.h. 2083 int getLastArgIntValue(const ArgList &Args, OptSpecifier Id, int Default, 2084 DiagnosticsEngine *Diags) { 2085 return getLastArgIntValueImpl<int>(Args, Id, Default, Diags); 2086 } 2087 2088 uint64_t getLastArgUInt64Value(const ArgList &Args, OptSpecifier Id, 2089 uint64_t Default, 2090 DiagnosticsEngine *Diags) { 2091 return getLastArgIntValueImpl<uint64_t>(Args, Id, Default, Diags); 2092 } 2093 2094 void BuryPointer(const void *Ptr) { 2095 // This function may be called only a small fixed amount of times per each 2096 // invocation, otherwise we do actually have a leak which we want to report. 2097 // If this function is called more than kGraveYardMaxSize times, the pointers 2098 // will not be properly buried and a leak detector will report a leak, which 2099 // is what we want in such case. 2100 static const size_t kGraveYardMaxSize = 16; 2101 LLVM_ATTRIBUTE_UNUSED static const void *GraveYard[kGraveYardMaxSize]; 2102 static std::atomic<unsigned> GraveYardSize; 2103 unsigned Idx = GraveYardSize++; 2104 if (Idx >= kGraveYardMaxSize) 2105 return; 2106 GraveYard[Idx] = Ptr; 2107 } 2108 2109 IntrusiveRefCntPtr<vfs::FileSystem> 2110 createVFSFromCompilerInvocation(const CompilerInvocation &CI, 2111 DiagnosticsEngine &Diags) { 2112 if (CI.getHeaderSearchOpts().VFSOverlayFiles.empty()) 2113 return vfs::getRealFileSystem(); 2114 2115 IntrusiveRefCntPtr<vfs::OverlayFileSystem> 2116 Overlay(new vfs::OverlayFileSystem(vfs::getRealFileSystem())); 2117 // earlier vfs files are on the bottom 2118 for (const std::string &File : CI.getHeaderSearchOpts().VFSOverlayFiles) { 2119 llvm::ErrorOr<std::unique_ptr<llvm::MemoryBuffer>> Buffer = 2120 llvm::MemoryBuffer::getFile(File); 2121 if (!Buffer) { 2122 Diags.Report(diag::err_missing_vfs_overlay_file) << File; 2123 return IntrusiveRefCntPtr<vfs::FileSystem>(); 2124 } 2125 2126 IntrusiveRefCntPtr<vfs::FileSystem> FS = 2127 vfs::getVFSFromYAML(std::move(Buffer.get()), /*DiagHandler*/ nullptr); 2128 if (!FS.get()) { 2129 Diags.Report(diag::err_invalid_vfs_overlay) << File; 2130 return IntrusiveRefCntPtr<vfs::FileSystem>(); 2131 } 2132 Overlay->pushOverlay(FS); 2133 } 2134 return Overlay; 2135 } 2136 } // end namespace clang 2137