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 if (Args.hasArg(OPT_gcodeview)) { 414 Opts.EmitCodeView = true; 415 Opts.DwarfVersion = 0; 416 } else if (Opts.getDebugInfo() != CodeGenOptions::NoDebugInfo) { 417 // Default Dwarf version is 4 if we are generating debug information. 418 Opts.DwarfVersion = 4; 419 } 420 Opts.SplitDwarfFile = Args.getLastArgValue(OPT_split_dwarf_file); 421 if (Args.hasArg(OPT_gdwarf_2)) 422 Opts.DwarfVersion = 2; 423 else if (Args.hasArg(OPT_gdwarf_3)) 424 Opts.DwarfVersion = 3; 425 else if (Args.hasArg(OPT_gdwarf_4)) 426 Opts.DwarfVersion = 4; 427 Opts.DebugTypeExtRefs = Args.hasArg(OPT_dwarf_ext_refs); 428 429 if (const Arg *A = 430 Args.getLastArg(OPT_emit_llvm_uselists, OPT_no_emit_llvm_uselists)) 431 Opts.EmitLLVMUseLists = A->getOption().getID() == OPT_emit_llvm_uselists; 432 433 Opts.DisableLLVMOpts = Args.hasArg(OPT_disable_llvm_optzns); 434 Opts.DisableLLVMPasses = Args.hasArg(OPT_disable_llvm_passes); 435 Opts.DisableRedZone = Args.hasArg(OPT_disable_red_zone); 436 Opts.ForbidGuardVariables = Args.hasArg(OPT_fforbid_guard_variables); 437 Opts.UseRegisterSizedBitfieldAccess = Args.hasArg( 438 OPT_fuse_register_sized_bitfield_access); 439 Opts.RelaxedAliasing = Args.hasArg(OPT_relaxed_aliasing); 440 Opts.StructPathTBAA = !Args.hasArg(OPT_no_struct_path_tbaa); 441 Opts.DwarfDebugFlags = Args.getLastArgValue(OPT_dwarf_debug_flags); 442 Opts.MergeAllConstants = !Args.hasArg(OPT_fno_merge_all_constants); 443 Opts.NoCommon = Args.hasArg(OPT_fno_common); 444 Opts.NoImplicitFloat = Args.hasArg(OPT_no_implicit_float); 445 Opts.OptimizeSize = getOptimizationLevelSize(Args); 446 Opts.SimplifyLibCalls = !(Args.hasArg(OPT_fno_builtin) || 447 Args.hasArg(OPT_ffreestanding)); 448 Opts.UnrollLoops = 449 Args.hasFlag(OPT_funroll_loops, OPT_fno_unroll_loops, 450 (Opts.OptimizationLevel > 1 && !Opts.OptimizeSize)); 451 Opts.RerollLoops = Args.hasArg(OPT_freroll_loops); 452 453 Opts.DisableIntegratedAS = Args.hasArg(OPT_fno_integrated_as); 454 Opts.Autolink = !Args.hasArg(OPT_fno_autolink); 455 Opts.SampleProfileFile = Args.getLastArgValue(OPT_fprofile_sample_use_EQ); 456 Opts.ProfileInstrGenerate = Args.hasArg(OPT_fprofile_instr_generate) || 457 Args.hasArg(OPT_fprofile_instr_generate_EQ); 458 Opts.InstrProfileOutput = Args.getLastArgValue(OPT_fprofile_instr_generate_EQ); 459 Opts.InstrProfileInput = Args.getLastArgValue(OPT_fprofile_instr_use_EQ); 460 Opts.CoverageMapping = 461 Args.hasFlag(OPT_fcoverage_mapping, OPT_fno_coverage_mapping, false); 462 Opts.DumpCoverageMapping = Args.hasArg(OPT_dump_coverage_mapping); 463 Opts.AsmVerbose = Args.hasArg(OPT_masm_verbose); 464 Opts.ObjCAutoRefCountExceptions = Args.hasArg(OPT_fobjc_arc_exceptions); 465 Opts.NewMSEH = Args.hasArg(OPT_fnew_ms_eh); 466 Opts.CXAAtExit = !Args.hasArg(OPT_fno_use_cxa_atexit); 467 Opts.CXXCtorDtorAliases = Args.hasArg(OPT_mconstructor_aliases); 468 Opts.CodeModel = getCodeModel(Args, Diags); 469 Opts.DebugPass = Args.getLastArgValue(OPT_mdebug_pass); 470 Opts.DisableFPElim = Args.hasArg(OPT_mdisable_fp_elim); 471 Opts.DisableFree = Args.hasArg(OPT_disable_free); 472 Opts.DisableTailCalls = Args.hasArg(OPT_mdisable_tail_calls); 473 Opts.FloatABI = Args.getLastArgValue(OPT_mfloat_abi); 474 Opts.LessPreciseFPMAD = Args.hasArg(OPT_cl_mad_enable); 475 Opts.LimitFloatPrecision = Args.getLastArgValue(OPT_mlimit_float_precision); 476 Opts.NoInfsFPMath = (Args.hasArg(OPT_menable_no_infinities) || 477 Args.hasArg(OPT_cl_finite_math_only) || 478 Args.hasArg(OPT_cl_fast_relaxed_math)); 479 Opts.NoNaNsFPMath = (Args.hasArg(OPT_menable_no_nans) || 480 Args.hasArg(OPT_cl_unsafe_math_optimizations) || 481 Args.hasArg(OPT_cl_finite_math_only) || 482 Args.hasArg(OPT_cl_fast_relaxed_math)); 483 Opts.NoSignedZeros = Args.hasArg(OPT_fno_signed_zeros); 484 Opts.ReciprocalMath = Args.hasArg(OPT_freciprocal_math); 485 Opts.NoZeroInitializedInBSS = Args.hasArg(OPT_mno_zero_initialized_in_bss); 486 Opts.BackendOptions = Args.getAllArgValues(OPT_backend_option); 487 Opts.NumRegisterParameters = getLastArgIntValue(Args, OPT_mregparm, 0, Diags); 488 Opts.NoExecStack = Args.hasArg(OPT_mno_exec_stack); 489 Opts.FatalWarnings = Args.hasArg(OPT_massembler_fatal_warnings); 490 Opts.EnableSegmentedStacks = Args.hasArg(OPT_split_stacks); 491 Opts.RelaxAll = Args.hasArg(OPT_mrelax_all); 492 Opts.OmitLeafFramePointer = Args.hasArg(OPT_momit_leaf_frame_pointer); 493 Opts.SaveTempLabels = Args.hasArg(OPT_msave_temp_labels); 494 Opts.NoDwarfDirectoryAsm = Args.hasArg(OPT_fno_dwarf_directory_asm); 495 Opts.SoftFloat = Args.hasArg(OPT_msoft_float); 496 Opts.StrictEnums = Args.hasArg(OPT_fstrict_enums); 497 Opts.StrictVTablePointers = Args.hasArg(OPT_fstrict_vtable_pointers); 498 Opts.UnsafeFPMath = Args.hasArg(OPT_menable_unsafe_fp_math) || 499 Args.hasArg(OPT_cl_unsafe_math_optimizations) || 500 Args.hasArg(OPT_cl_fast_relaxed_math); 501 Opts.UnwindTables = Args.hasArg(OPT_munwind_tables); 502 Opts.RelocationModel = Args.getLastArgValue(OPT_mrelocation_model, "pic"); 503 Opts.ThreadModel = Args.getLastArgValue(OPT_mthread_model, "posix"); 504 if (Opts.ThreadModel != "posix" && Opts.ThreadModel != "single") 505 Diags.Report(diag::err_drv_invalid_value) 506 << Args.getLastArg(OPT_mthread_model)->getAsString(Args) 507 << Opts.ThreadModel; 508 Opts.TrapFuncName = Args.getLastArgValue(OPT_ftrap_function_EQ); 509 Opts.UseInitArray = Args.hasArg(OPT_fuse_init_array); 510 511 Opts.FunctionSections = Args.hasFlag(OPT_ffunction_sections, 512 OPT_fno_function_sections, false); 513 Opts.DataSections = Args.hasFlag(OPT_fdata_sections, 514 OPT_fno_data_sections, false); 515 Opts.UniqueSectionNames = Args.hasFlag(OPT_funique_section_names, 516 OPT_fno_unique_section_names, true); 517 518 Opts.MergeFunctions = Args.hasArg(OPT_fmerge_functions); 519 520 Opts.PrepareForLTO = Args.hasArg(OPT_flto); 521 522 Opts.MSVolatile = Args.hasArg(OPT_fms_volatile); 523 524 Opts.VectorizeBB = Args.hasArg(OPT_vectorize_slp_aggressive); 525 Opts.VectorizeLoop = Args.hasArg(OPT_vectorize_loops); 526 Opts.VectorizeSLP = Args.hasArg(OPT_vectorize_slp); 527 528 Opts.MainFileName = Args.getLastArgValue(OPT_main_file_name); 529 Opts.VerifyModule = !Args.hasArg(OPT_disable_llvm_verifier); 530 531 Opts.DisableGCov = Args.hasArg(OPT_test_coverage); 532 Opts.EmitGcovArcs = Args.hasArg(OPT_femit_coverage_data); 533 Opts.EmitGcovNotes = Args.hasArg(OPT_femit_coverage_notes); 534 if (Opts.EmitGcovArcs || Opts.EmitGcovNotes) { 535 Opts.CoverageFile = Args.getLastArgValue(OPT_coverage_file); 536 Opts.CoverageExtraChecksum = Args.hasArg(OPT_coverage_cfg_checksum); 537 Opts.CoverageNoFunctionNamesInData = 538 Args.hasArg(OPT_coverage_no_function_names_in_data); 539 Opts.CoverageExitBlockBeforeBody = 540 Args.hasArg(OPT_coverage_exit_block_before_body); 541 if (Args.hasArg(OPT_coverage_version_EQ)) { 542 StringRef CoverageVersion = Args.getLastArgValue(OPT_coverage_version_EQ); 543 if (CoverageVersion.size() != 4) { 544 Diags.Report(diag::err_drv_invalid_value) 545 << Args.getLastArg(OPT_coverage_version_EQ)->getAsString(Args) 546 << CoverageVersion; 547 } else { 548 memcpy(Opts.CoverageVersion, CoverageVersion.data(), 4); 549 } 550 } 551 } 552 553 Opts.InstrumentFunctions = Args.hasArg(OPT_finstrument_functions); 554 Opts.InstrumentForProfiling = Args.hasArg(OPT_pg); 555 Opts.EmitOpenCLArgMetadata = Args.hasArg(OPT_cl_kernel_arg_info); 556 Opts.CompressDebugSections = Args.hasArg(OPT_compress_debug_sections); 557 Opts.DebugCompilationDir = Args.getLastArgValue(OPT_fdebug_compilation_dir); 558 Opts.LinkBitcodeFile = Args.getLastArgValue(OPT_mlink_bitcode_file); 559 Opts.SanitizeCoverageType = 560 getLastArgIntValue(Args, OPT_fsanitize_coverage_type, 0, Diags); 561 Opts.SanitizeCoverageIndirectCalls = 562 Args.hasArg(OPT_fsanitize_coverage_indirect_calls); 563 Opts.SanitizeCoverageTraceBB = Args.hasArg(OPT_fsanitize_coverage_trace_bb); 564 Opts.SanitizeCoverageTraceCmp = Args.hasArg(OPT_fsanitize_coverage_trace_cmp); 565 Opts.SanitizeCoverage8bitCounters = 566 Args.hasArg(OPT_fsanitize_coverage_8bit_counters); 567 Opts.SanitizeMemoryTrackOrigins = 568 getLastArgIntValue(Args, OPT_fsanitize_memory_track_origins_EQ, 0, Diags); 569 Opts.SanitizeMemoryUseAfterDtor = 570 Args.hasArg(OPT_fsanitize_memory_use_after_dtor); 571 Opts.SSPBufferSize = 572 getLastArgIntValue(Args, OPT_stack_protector_buffer_size, 8, Diags); 573 Opts.StackRealignment = Args.hasArg(OPT_mstackrealign); 574 if (Arg *A = Args.getLastArg(OPT_mstack_alignment)) { 575 StringRef Val = A->getValue(); 576 unsigned StackAlignment = Opts.StackAlignment; 577 Val.getAsInteger(10, StackAlignment); 578 Opts.StackAlignment = StackAlignment; 579 } 580 581 if (Arg *A = Args.getLastArg(OPT_mstack_probe_size)) { 582 StringRef Val = A->getValue(); 583 unsigned StackProbeSize = Opts.StackProbeSize; 584 Val.getAsInteger(0, StackProbeSize); 585 Opts.StackProbeSize = StackProbeSize; 586 } 587 588 if (Arg *A = Args.getLastArg(OPT_fobjc_dispatch_method_EQ)) { 589 StringRef Name = A->getValue(); 590 unsigned Method = llvm::StringSwitch<unsigned>(Name) 591 .Case("legacy", CodeGenOptions::Legacy) 592 .Case("non-legacy", CodeGenOptions::NonLegacy) 593 .Case("mixed", CodeGenOptions::Mixed) 594 .Default(~0U); 595 if (Method == ~0U) { 596 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Name; 597 Success = false; 598 } else { 599 Opts.setObjCDispatchMethod( 600 static_cast<CodeGenOptions::ObjCDispatchMethodKind>(Method)); 601 } 602 } 603 604 Opts.EmulatedTLS = 605 Args.hasFlag(OPT_femulated_tls, OPT_fno_emulated_tls, false); 606 607 if (Arg *A = Args.getLastArg(OPT_ftlsmodel_EQ)) { 608 StringRef Name = A->getValue(); 609 unsigned Model = llvm::StringSwitch<unsigned>(Name) 610 .Case("global-dynamic", CodeGenOptions::GeneralDynamicTLSModel) 611 .Case("local-dynamic", CodeGenOptions::LocalDynamicTLSModel) 612 .Case("initial-exec", CodeGenOptions::InitialExecTLSModel) 613 .Case("local-exec", CodeGenOptions::LocalExecTLSModel) 614 .Default(~0U); 615 if (Model == ~0U) { 616 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Name; 617 Success = false; 618 } else { 619 Opts.setDefaultTLSModel(static_cast<CodeGenOptions::TLSModel>(Model)); 620 } 621 } 622 623 if (Arg *A = Args.getLastArg(OPT_ffp_contract)) { 624 StringRef Val = A->getValue(); 625 if (Val == "fast") 626 Opts.setFPContractMode(CodeGenOptions::FPC_Fast); 627 else if (Val == "on") 628 Opts.setFPContractMode(CodeGenOptions::FPC_On); 629 else if (Val == "off") 630 Opts.setFPContractMode(CodeGenOptions::FPC_Off); 631 else 632 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Val; 633 } 634 635 if (Arg *A = Args.getLastArg(OPT_fpcc_struct_return, OPT_freg_struct_return)) { 636 if (A->getOption().matches(OPT_fpcc_struct_return)) { 637 Opts.setStructReturnConvention(CodeGenOptions::SRCK_OnStack); 638 } else { 639 assert(A->getOption().matches(OPT_freg_struct_return)); 640 Opts.setStructReturnConvention(CodeGenOptions::SRCK_InRegs); 641 } 642 } 643 644 Opts.DependentLibraries = Args.getAllArgValues(OPT_dependent_lib); 645 bool NeedLocTracking = false; 646 647 if (Arg *A = Args.getLastArg(OPT_Rpass_EQ)) { 648 Opts.OptimizationRemarkPattern = 649 GenerateOptimizationRemarkRegex(Diags, Args, A); 650 NeedLocTracking = true; 651 } 652 653 if (Arg *A = Args.getLastArg(OPT_Rpass_missed_EQ)) { 654 Opts.OptimizationRemarkMissedPattern = 655 GenerateOptimizationRemarkRegex(Diags, Args, A); 656 NeedLocTracking = true; 657 } 658 659 if (Arg *A = Args.getLastArg(OPT_Rpass_analysis_EQ)) { 660 Opts.OptimizationRemarkAnalysisPattern = 661 GenerateOptimizationRemarkRegex(Diags, Args, A); 662 NeedLocTracking = true; 663 } 664 665 // If the user requested to use a sample profile for PGO, then the 666 // backend will need to track source location information so the profile 667 // can be incorporated into the IR. 668 if (!Opts.SampleProfileFile.empty()) 669 NeedLocTracking = true; 670 671 // If the user requested a flag that requires source locations available in 672 // the backend, make sure that the backend tracks source location information. 673 if (NeedLocTracking && Opts.getDebugInfo() == CodeGenOptions::NoDebugInfo) 674 Opts.setDebugInfo(CodeGenOptions::LocTrackingOnly); 675 676 Opts.RewriteMapFiles = Args.getAllArgValues(OPT_frewrite_map_file); 677 678 // Parse -fsanitize-recover= arguments. 679 // FIXME: Report unrecoverable sanitizers incorrectly specified here. 680 parseSanitizerKinds("-fsanitize-recover=", 681 Args.getAllArgValues(OPT_fsanitize_recover_EQ), Diags, 682 Opts.SanitizeRecover); 683 parseSanitizerKinds("-fsanitize-trap=", 684 Args.getAllArgValues(OPT_fsanitize_trap_EQ), Diags, 685 Opts.SanitizeTrap); 686 687 Opts.CudaGpuBinaryFileNames = 688 Args.getAllArgValues(OPT_fcuda_include_gpubinary); 689 690 return Success; 691 } 692 693 static void ParseDependencyOutputArgs(DependencyOutputOptions &Opts, 694 ArgList &Args) { 695 using namespace options; 696 Opts.OutputFile = Args.getLastArgValue(OPT_dependency_file); 697 Opts.Targets = Args.getAllArgValues(OPT_MT); 698 Opts.IncludeSystemHeaders = Args.hasArg(OPT_sys_header_deps); 699 Opts.IncludeModuleFiles = Args.hasArg(OPT_module_file_deps); 700 Opts.UsePhonyTargets = Args.hasArg(OPT_MP); 701 Opts.ShowHeaderIncludes = Args.hasArg(OPT_H); 702 Opts.HeaderIncludeOutputFile = Args.getLastArgValue(OPT_header_include_file); 703 Opts.AddMissingHeaderDeps = Args.hasArg(OPT_MG); 704 Opts.PrintShowIncludes = Args.hasArg(OPT_show_includes); 705 Opts.DOTOutputFile = Args.getLastArgValue(OPT_dependency_dot); 706 Opts.ModuleDependencyOutputDir = 707 Args.getLastArgValue(OPT_module_dependency_dir); 708 if (Args.hasArg(OPT_MV)) 709 Opts.OutputFormat = DependencyOutputFormat::NMake; 710 // Add sanitizer blacklists as extra dependencies. 711 // They won't be discovered by the regular preprocessor, so 712 // we let make / ninja to know about this implicit dependency. 713 Opts.ExtraDeps = Args.getAllArgValues(OPT_fdepfile_entry); 714 auto ModuleFiles = Args.getAllArgValues(OPT_fmodule_file); 715 Opts.ExtraDeps.insert(Opts.ExtraDeps.end(), ModuleFiles.begin(), 716 ModuleFiles.end()); 717 } 718 719 bool clang::ParseDiagnosticArgs(DiagnosticOptions &Opts, ArgList &Args, 720 DiagnosticsEngine *Diags) { 721 using namespace options; 722 bool Success = true; 723 724 Opts.DiagnosticLogFile = Args.getLastArgValue(OPT_diagnostic_log_file); 725 if (Arg *A = 726 Args.getLastArg(OPT_diagnostic_serialized_file, OPT__serialize_diags)) 727 Opts.DiagnosticSerializationFile = A->getValue(); 728 Opts.IgnoreWarnings = Args.hasArg(OPT_w); 729 Opts.NoRewriteMacros = Args.hasArg(OPT_Wno_rewrite_macros); 730 Opts.Pedantic = Args.hasArg(OPT_pedantic); 731 Opts.PedanticErrors = Args.hasArg(OPT_pedantic_errors); 732 Opts.ShowCarets = !Args.hasArg(OPT_fno_caret_diagnostics); 733 Opts.ShowColors = Args.hasArg(OPT_fcolor_diagnostics); 734 Opts.ShowColumn = Args.hasFlag(OPT_fshow_column, 735 OPT_fno_show_column, 736 /*Default=*/true); 737 Opts.ShowFixits = !Args.hasArg(OPT_fno_diagnostics_fixit_info); 738 Opts.ShowLocation = !Args.hasArg(OPT_fno_show_source_location); 739 Opts.ShowOptionNames = Args.hasArg(OPT_fdiagnostics_show_option); 740 741 llvm::sys::Process::UseANSIEscapeCodes(Args.hasArg(OPT_fansi_escape_codes)); 742 743 // Default behavior is to not to show note include stacks. 744 Opts.ShowNoteIncludeStack = false; 745 if (Arg *A = Args.getLastArg(OPT_fdiagnostics_show_note_include_stack, 746 OPT_fno_diagnostics_show_note_include_stack)) 747 if (A->getOption().matches(OPT_fdiagnostics_show_note_include_stack)) 748 Opts.ShowNoteIncludeStack = true; 749 750 StringRef ShowOverloads = 751 Args.getLastArgValue(OPT_fshow_overloads_EQ, "all"); 752 if (ShowOverloads == "best") 753 Opts.setShowOverloads(Ovl_Best); 754 else if (ShowOverloads == "all") 755 Opts.setShowOverloads(Ovl_All); 756 else { 757 Success = false; 758 if (Diags) 759 Diags->Report(diag::err_drv_invalid_value) 760 << Args.getLastArg(OPT_fshow_overloads_EQ)->getAsString(Args) 761 << ShowOverloads; 762 } 763 764 StringRef ShowCategory = 765 Args.getLastArgValue(OPT_fdiagnostics_show_category, "none"); 766 if (ShowCategory == "none") 767 Opts.ShowCategories = 0; 768 else if (ShowCategory == "id") 769 Opts.ShowCategories = 1; 770 else if (ShowCategory == "name") 771 Opts.ShowCategories = 2; 772 else { 773 Success = false; 774 if (Diags) 775 Diags->Report(diag::err_drv_invalid_value) 776 << Args.getLastArg(OPT_fdiagnostics_show_category)->getAsString(Args) 777 << ShowCategory; 778 } 779 780 StringRef Format = 781 Args.getLastArgValue(OPT_fdiagnostics_format, "clang"); 782 if (Format == "clang") 783 Opts.setFormat(DiagnosticOptions::Clang); 784 else if (Format == "msvc") 785 Opts.setFormat(DiagnosticOptions::MSVC); 786 else if (Format == "msvc-fallback") { 787 Opts.setFormat(DiagnosticOptions::MSVC); 788 Opts.CLFallbackMode = true; 789 } else if (Format == "vi") 790 Opts.setFormat(DiagnosticOptions::Vi); 791 else { 792 Success = false; 793 if (Diags) 794 Diags->Report(diag::err_drv_invalid_value) 795 << Args.getLastArg(OPT_fdiagnostics_format)->getAsString(Args) 796 << Format; 797 } 798 799 Opts.ShowSourceRanges = Args.hasArg(OPT_fdiagnostics_print_source_range_info); 800 Opts.ShowParseableFixits = Args.hasArg(OPT_fdiagnostics_parseable_fixits); 801 Opts.ShowPresumedLoc = !Args.hasArg(OPT_fno_diagnostics_use_presumed_location); 802 Opts.VerifyDiagnostics = Args.hasArg(OPT_verify); 803 DiagnosticLevelMask DiagMask = DiagnosticLevelMask::None; 804 Success &= parseDiagnosticLevelMask("-verify-ignore-unexpected=", 805 Args.getAllArgValues(OPT_verify_ignore_unexpected_EQ), 806 Diags, DiagMask); 807 if (Args.hasArg(OPT_verify_ignore_unexpected)) 808 DiagMask = DiagnosticLevelMask::All; 809 Opts.setVerifyIgnoreUnexpected(DiagMask); 810 Opts.ElideType = !Args.hasArg(OPT_fno_elide_type); 811 Opts.ShowTemplateTree = Args.hasArg(OPT_fdiagnostics_show_template_tree); 812 Opts.ErrorLimit = getLastArgIntValue(Args, OPT_ferror_limit, 0, Diags); 813 Opts.MacroBacktraceLimit = 814 getLastArgIntValue(Args, OPT_fmacro_backtrace_limit, 815 DiagnosticOptions::DefaultMacroBacktraceLimit, Diags); 816 Opts.TemplateBacktraceLimit = getLastArgIntValue( 817 Args, OPT_ftemplate_backtrace_limit, 818 DiagnosticOptions::DefaultTemplateBacktraceLimit, Diags); 819 Opts.ConstexprBacktraceLimit = getLastArgIntValue( 820 Args, OPT_fconstexpr_backtrace_limit, 821 DiagnosticOptions::DefaultConstexprBacktraceLimit, Diags); 822 Opts.SpellCheckingLimit = getLastArgIntValue( 823 Args, OPT_fspell_checking_limit, 824 DiagnosticOptions::DefaultSpellCheckingLimit, Diags); 825 Opts.TabStop = getLastArgIntValue(Args, OPT_ftabstop, 826 DiagnosticOptions::DefaultTabStop, Diags); 827 if (Opts.TabStop == 0 || Opts.TabStop > DiagnosticOptions::MaxTabStop) { 828 Opts.TabStop = DiagnosticOptions::DefaultTabStop; 829 if (Diags) 830 Diags->Report(diag::warn_ignoring_ftabstop_value) 831 << Opts.TabStop << DiagnosticOptions::DefaultTabStop; 832 } 833 Opts.MessageLength = getLastArgIntValue(Args, OPT_fmessage_length, 0, Diags); 834 addDiagnosticArgs(Args, OPT_W_Group, OPT_W_value_Group, Opts.Warnings); 835 addDiagnosticArgs(Args, OPT_R_Group, OPT_R_value_Group, Opts.Remarks); 836 837 return Success; 838 } 839 840 static void ParseFileSystemArgs(FileSystemOptions &Opts, ArgList &Args) { 841 Opts.WorkingDir = Args.getLastArgValue(OPT_working_directory); 842 } 843 844 static InputKind ParseFrontendArgs(FrontendOptions &Opts, ArgList &Args, 845 DiagnosticsEngine &Diags) { 846 using namespace options; 847 Opts.ProgramAction = frontend::ParseSyntaxOnly; 848 if (const Arg *A = Args.getLastArg(OPT_Action_Group)) { 849 switch (A->getOption().getID()) { 850 default: 851 llvm_unreachable("Invalid option in group!"); 852 case OPT_ast_list: 853 Opts.ProgramAction = frontend::ASTDeclList; break; 854 case OPT_ast_dump: 855 case OPT_ast_dump_lookups: 856 Opts.ProgramAction = frontend::ASTDump; break; 857 case OPT_ast_print: 858 Opts.ProgramAction = frontend::ASTPrint; break; 859 case OPT_ast_view: 860 Opts.ProgramAction = frontend::ASTView; break; 861 case OPT_dump_raw_tokens: 862 Opts.ProgramAction = frontend::DumpRawTokens; break; 863 case OPT_dump_tokens: 864 Opts.ProgramAction = frontend::DumpTokens; break; 865 case OPT_S: 866 Opts.ProgramAction = frontend::EmitAssembly; break; 867 case OPT_emit_llvm_bc: 868 Opts.ProgramAction = frontend::EmitBC; break; 869 case OPT_emit_html: 870 Opts.ProgramAction = frontend::EmitHTML; break; 871 case OPT_emit_llvm: 872 Opts.ProgramAction = frontend::EmitLLVM; break; 873 case OPT_emit_llvm_only: 874 Opts.ProgramAction = frontend::EmitLLVMOnly; break; 875 case OPT_emit_codegen_only: 876 Opts.ProgramAction = frontend::EmitCodeGenOnly; break; 877 case OPT_emit_obj: 878 Opts.ProgramAction = frontend::EmitObj; break; 879 case OPT_fixit_EQ: 880 Opts.FixItSuffix = A->getValue(); 881 // fall-through! 882 case OPT_fixit: 883 Opts.ProgramAction = frontend::FixIt; break; 884 case OPT_emit_module: 885 Opts.ProgramAction = frontend::GenerateModule; break; 886 case OPT_emit_pch: 887 Opts.ProgramAction = frontend::GeneratePCH; break; 888 case OPT_emit_pth: 889 Opts.ProgramAction = frontend::GeneratePTH; break; 890 case OPT_init_only: 891 Opts.ProgramAction = frontend::InitOnly; break; 892 case OPT_fsyntax_only: 893 Opts.ProgramAction = frontend::ParseSyntaxOnly; break; 894 case OPT_module_file_info: 895 Opts.ProgramAction = frontend::ModuleFileInfo; break; 896 case OPT_verify_pch: 897 Opts.ProgramAction = frontend::VerifyPCH; break; 898 case OPT_print_decl_contexts: 899 Opts.ProgramAction = frontend::PrintDeclContext; break; 900 case OPT_print_preamble: 901 Opts.ProgramAction = frontend::PrintPreamble; break; 902 case OPT_E: 903 Opts.ProgramAction = frontend::PrintPreprocessedInput; break; 904 case OPT_rewrite_macros: 905 Opts.ProgramAction = frontend::RewriteMacros; break; 906 case OPT_rewrite_objc: 907 Opts.ProgramAction = frontend::RewriteObjC; break; 908 case OPT_rewrite_test: 909 Opts.ProgramAction = frontend::RewriteTest; break; 910 case OPT_analyze: 911 Opts.ProgramAction = frontend::RunAnalysis; break; 912 case OPT_migrate: 913 Opts.ProgramAction = frontend::MigrateSource; break; 914 case OPT_Eonly: 915 Opts.ProgramAction = frontend::RunPreprocessorOnly; break; 916 } 917 } 918 919 if (const Arg* A = Args.getLastArg(OPT_plugin)) { 920 Opts.Plugins.emplace_back(A->getValue(0)); 921 Opts.ProgramAction = frontend::PluginAction; 922 Opts.ActionName = A->getValue(); 923 924 for (const Arg *AA : Args.filtered(OPT_plugin_arg)) 925 if (AA->getValue(0) == Opts.ActionName) 926 Opts.PluginArgs.emplace_back(AA->getValue(1)); 927 } 928 929 Opts.AddPluginActions = Args.getAllArgValues(OPT_add_plugin); 930 Opts.AddPluginArgs.resize(Opts.AddPluginActions.size()); 931 for (int i = 0, e = Opts.AddPluginActions.size(); i != e; ++i) 932 for (const Arg *A : Args.filtered(OPT_plugin_arg)) 933 if (A->getValue(0) == Opts.AddPluginActions[i]) 934 Opts.AddPluginArgs[i].emplace_back(A->getValue(1)); 935 936 if (const Arg *A = Args.getLastArg(OPT_code_completion_at)) { 937 Opts.CodeCompletionAt = 938 ParsedSourceLocation::FromString(A->getValue()); 939 if (Opts.CodeCompletionAt.FileName.empty()) 940 Diags.Report(diag::err_drv_invalid_value) 941 << A->getAsString(Args) << A->getValue(); 942 } 943 Opts.DisableFree = Args.hasArg(OPT_disable_free); 944 945 Opts.OutputFile = Args.getLastArgValue(OPT_o); 946 Opts.Plugins = Args.getAllArgValues(OPT_load); 947 Opts.RelocatablePCH = Args.hasArg(OPT_relocatable_pch); 948 Opts.ShowHelp = Args.hasArg(OPT_help); 949 Opts.ShowStats = Args.hasArg(OPT_print_stats); 950 Opts.ShowTimers = Args.hasArg(OPT_ftime_report); 951 Opts.ShowVersion = Args.hasArg(OPT_version); 952 Opts.ASTMergeFiles = Args.getAllArgValues(OPT_ast_merge); 953 Opts.LLVMArgs = Args.getAllArgValues(OPT_mllvm); 954 Opts.FixWhatYouCan = Args.hasArg(OPT_fix_what_you_can); 955 Opts.FixOnlyWarnings = Args.hasArg(OPT_fix_only_warnings); 956 Opts.FixAndRecompile = Args.hasArg(OPT_fixit_recompile); 957 Opts.FixToTemporaries = Args.hasArg(OPT_fixit_to_temp); 958 Opts.ASTDumpDecls = Args.hasArg(OPT_ast_dump); 959 Opts.ASTDumpFilter = Args.getLastArgValue(OPT_ast_dump_filter); 960 Opts.ASTDumpLookups = Args.hasArg(OPT_ast_dump_lookups); 961 Opts.UseGlobalModuleIndex = !Args.hasArg(OPT_fno_modules_global_index); 962 Opts.GenerateGlobalModuleIndex = Opts.UseGlobalModuleIndex; 963 Opts.ModuleMapFiles = Args.getAllArgValues(OPT_fmodule_map_file); 964 Opts.ModuleFiles = Args.getAllArgValues(OPT_fmodule_file); 965 Opts.ModulesEmbedFiles = Args.getAllArgValues(OPT_fmodules_embed_file_EQ); 966 967 Opts.CodeCompleteOpts.IncludeMacros 968 = Args.hasArg(OPT_code_completion_macros); 969 Opts.CodeCompleteOpts.IncludeCodePatterns 970 = Args.hasArg(OPT_code_completion_patterns); 971 Opts.CodeCompleteOpts.IncludeGlobals 972 = !Args.hasArg(OPT_no_code_completion_globals); 973 Opts.CodeCompleteOpts.IncludeBriefComments 974 = Args.hasArg(OPT_code_completion_brief_comments); 975 976 Opts.OverrideRecordLayoutsFile 977 = Args.getLastArgValue(OPT_foverride_record_layout_EQ); 978 if (const Arg *A = Args.getLastArg(OPT_arcmt_check, 979 OPT_arcmt_modify, 980 OPT_arcmt_migrate)) { 981 switch (A->getOption().getID()) { 982 default: 983 llvm_unreachable("missed a case"); 984 case OPT_arcmt_check: 985 Opts.ARCMTAction = FrontendOptions::ARCMT_Check; 986 break; 987 case OPT_arcmt_modify: 988 Opts.ARCMTAction = FrontendOptions::ARCMT_Modify; 989 break; 990 case OPT_arcmt_migrate: 991 Opts.ARCMTAction = FrontendOptions::ARCMT_Migrate; 992 break; 993 } 994 } 995 Opts.MTMigrateDir = Args.getLastArgValue(OPT_mt_migrate_directory); 996 Opts.ARCMTMigrateReportOut 997 = Args.getLastArgValue(OPT_arcmt_migrate_report_output); 998 Opts.ARCMTMigrateEmitARCErrors 999 = Args.hasArg(OPT_arcmt_migrate_emit_arc_errors); 1000 1001 if (Args.hasArg(OPT_objcmt_migrate_literals)) 1002 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_Literals; 1003 if (Args.hasArg(OPT_objcmt_migrate_subscripting)) 1004 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_Subscripting; 1005 if (Args.hasArg(OPT_objcmt_migrate_property_dot_syntax)) 1006 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_PropertyDotSyntax; 1007 if (Args.hasArg(OPT_objcmt_migrate_property)) 1008 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_Property; 1009 if (Args.hasArg(OPT_objcmt_migrate_readonly_property)) 1010 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_ReadonlyProperty; 1011 if (Args.hasArg(OPT_objcmt_migrate_readwrite_property)) 1012 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_ReadwriteProperty; 1013 if (Args.hasArg(OPT_objcmt_migrate_annotation)) 1014 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_Annotation; 1015 if (Args.hasArg(OPT_objcmt_returns_innerpointer_property)) 1016 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_ReturnsInnerPointerProperty; 1017 if (Args.hasArg(OPT_objcmt_migrate_instancetype)) 1018 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_Instancetype; 1019 if (Args.hasArg(OPT_objcmt_migrate_nsmacros)) 1020 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_NsMacros; 1021 if (Args.hasArg(OPT_objcmt_migrate_protocol_conformance)) 1022 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_ProtocolConformance; 1023 if (Args.hasArg(OPT_objcmt_atomic_property)) 1024 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_AtomicProperty; 1025 if (Args.hasArg(OPT_objcmt_ns_nonatomic_iosonly)) 1026 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_NsAtomicIOSOnlyProperty; 1027 if (Args.hasArg(OPT_objcmt_migrate_designated_init)) 1028 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_DesignatedInitializer; 1029 if (Args.hasArg(OPT_objcmt_migrate_all)) 1030 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_MigrateDecls; 1031 1032 Opts.ObjCMTWhiteListPath = Args.getLastArgValue(OPT_objcmt_whitelist_dir_path); 1033 1034 if (Opts.ARCMTAction != FrontendOptions::ARCMT_None && 1035 Opts.ObjCMTAction != FrontendOptions::ObjCMT_None) { 1036 Diags.Report(diag::err_drv_argument_not_allowed_with) 1037 << "ARC migration" << "ObjC migration"; 1038 } 1039 1040 InputKind DashX = IK_None; 1041 if (const Arg *A = Args.getLastArg(OPT_x)) { 1042 DashX = llvm::StringSwitch<InputKind>(A->getValue()) 1043 .Case("c", IK_C) 1044 .Case("cl", IK_OpenCL) 1045 .Case("cuda", IK_CUDA) 1046 .Case("c++", IK_CXX) 1047 .Case("objective-c", IK_ObjC) 1048 .Case("objective-c++", IK_ObjCXX) 1049 .Case("cpp-output", IK_PreprocessedC) 1050 .Case("assembler-with-cpp", IK_Asm) 1051 .Case("c++-cpp-output", IK_PreprocessedCXX) 1052 .Case("cuda-cpp-output", IK_PreprocessedCuda) 1053 .Case("objective-c-cpp-output", IK_PreprocessedObjC) 1054 .Case("objc-cpp-output", IK_PreprocessedObjC) 1055 .Case("objective-c++-cpp-output", IK_PreprocessedObjCXX) 1056 .Case("objc++-cpp-output", IK_PreprocessedObjCXX) 1057 .Case("c-header", IK_C) 1058 .Case("cl-header", IK_OpenCL) 1059 .Case("objective-c-header", IK_ObjC) 1060 .Case("c++-header", IK_CXX) 1061 .Case("objective-c++-header", IK_ObjCXX) 1062 .Cases("ast", "pcm", IK_AST) 1063 .Case("ir", IK_LLVM_IR) 1064 .Default(IK_None); 1065 if (DashX == IK_None) 1066 Diags.Report(diag::err_drv_invalid_value) 1067 << A->getAsString(Args) << A->getValue(); 1068 } 1069 1070 // '-' is the default input if none is given. 1071 std::vector<std::string> Inputs = Args.getAllArgValues(OPT_INPUT); 1072 Opts.Inputs.clear(); 1073 if (Inputs.empty()) 1074 Inputs.push_back("-"); 1075 for (unsigned i = 0, e = Inputs.size(); i != e; ++i) { 1076 InputKind IK = DashX; 1077 if (IK == IK_None) { 1078 IK = FrontendOptions::getInputKindForExtension( 1079 StringRef(Inputs[i]).rsplit('.').second); 1080 // FIXME: Remove this hack. 1081 if (i == 0) 1082 DashX = IK; 1083 } 1084 Opts.Inputs.emplace_back(std::move(Inputs[i]), IK); 1085 } 1086 1087 return DashX; 1088 } 1089 1090 std::string CompilerInvocation::GetResourcesPath(const char *Argv0, 1091 void *MainAddr) { 1092 std::string ClangExecutable = 1093 llvm::sys::fs::getMainExecutable(Argv0, MainAddr); 1094 StringRef Dir = llvm::sys::path::parent_path(ClangExecutable); 1095 1096 // Compute the path to the resource directory. 1097 StringRef ClangResourceDir(CLANG_RESOURCE_DIR); 1098 SmallString<128> P(Dir); 1099 if (ClangResourceDir != "") 1100 llvm::sys::path::append(P, ClangResourceDir); 1101 else 1102 llvm::sys::path::append(P, "..", Twine("lib") + CLANG_LIBDIR_SUFFIX, 1103 "clang", CLANG_VERSION_STRING); 1104 1105 return P.str(); 1106 } 1107 1108 static void ParseHeaderSearchArgs(HeaderSearchOptions &Opts, ArgList &Args) { 1109 using namespace options; 1110 Opts.Sysroot = Args.getLastArgValue(OPT_isysroot, "/"); 1111 Opts.Verbose = Args.hasArg(OPT_v); 1112 Opts.UseBuiltinIncludes = !Args.hasArg(OPT_nobuiltininc); 1113 Opts.UseStandardSystemIncludes = !Args.hasArg(OPT_nostdsysteminc); 1114 Opts.UseStandardCXXIncludes = !Args.hasArg(OPT_nostdincxx); 1115 if (const Arg *A = Args.getLastArg(OPT_stdlib_EQ)) 1116 Opts.UseLibcxx = (strcmp(A->getValue(), "libc++") == 0); 1117 Opts.ResourceDir = Args.getLastArgValue(OPT_resource_dir); 1118 Opts.ModuleCachePath = Args.getLastArgValue(OPT_fmodules_cache_path); 1119 Opts.ModuleUserBuildPath = Args.getLastArgValue(OPT_fmodules_user_build_path); 1120 Opts.DisableModuleHash = Args.hasArg(OPT_fdisable_module_hash); 1121 Opts.ImplicitModuleMaps = Args.hasArg(OPT_fimplicit_module_maps); 1122 Opts.ModuleMapFileHomeIsCwd = Args.hasArg(OPT_fmodule_map_file_home_is_cwd); 1123 Opts.ModuleCachePruneInterval = 1124 getLastArgIntValue(Args, OPT_fmodules_prune_interval, 7 * 24 * 60 * 60); 1125 Opts.ModuleCachePruneAfter = 1126 getLastArgIntValue(Args, OPT_fmodules_prune_after, 31 * 24 * 60 * 60); 1127 Opts.ModulesValidateOncePerBuildSession = 1128 Args.hasArg(OPT_fmodules_validate_once_per_build_session); 1129 Opts.BuildSessionTimestamp = 1130 getLastArgUInt64Value(Args, OPT_fbuild_session_timestamp, 0); 1131 Opts.ModulesValidateSystemHeaders = 1132 Args.hasArg(OPT_fmodules_validate_system_headers); 1133 if (const Arg *A = Args.getLastArg(OPT_fmodule_format_EQ)) 1134 Opts.ModuleFormat = A->getValue(); 1135 1136 for (const Arg *A : Args.filtered(OPT_fmodules_ignore_macro)) { 1137 StringRef MacroDef = A->getValue(); 1138 Opts.ModulesIgnoreMacros.insert(MacroDef.split('=').first); 1139 } 1140 1141 // Add -I..., -F..., and -index-header-map options in order. 1142 bool IsIndexHeaderMap = false; 1143 for (const Arg *A : Args.filtered(OPT_I, OPT_F, OPT_index_header_map)) { 1144 if (A->getOption().matches(OPT_index_header_map)) { 1145 // -index-header-map applies to the next -I or -F. 1146 IsIndexHeaderMap = true; 1147 continue; 1148 } 1149 1150 frontend::IncludeDirGroup Group = 1151 IsIndexHeaderMap ? frontend::IndexHeaderMap : frontend::Angled; 1152 1153 Opts.AddPath(A->getValue(), Group, 1154 /*IsFramework=*/A->getOption().matches(OPT_F), true); 1155 IsIndexHeaderMap = false; 1156 } 1157 1158 // Add -iprefix/-iwithprefix/-iwithprefixbefore options. 1159 StringRef Prefix = ""; // FIXME: This isn't the correct default prefix. 1160 for (const Arg *A : 1161 Args.filtered(OPT_iprefix, OPT_iwithprefix, OPT_iwithprefixbefore)) { 1162 if (A->getOption().matches(OPT_iprefix)) 1163 Prefix = A->getValue(); 1164 else if (A->getOption().matches(OPT_iwithprefix)) 1165 Opts.AddPath(Prefix.str() + A->getValue(), frontend::After, false, true); 1166 else 1167 Opts.AddPath(Prefix.str() + A->getValue(), frontend::Angled, false, true); 1168 } 1169 1170 for (const Arg *A : Args.filtered(OPT_idirafter)) 1171 Opts.AddPath(A->getValue(), frontend::After, false, true); 1172 for (const Arg *A : Args.filtered(OPT_iquote)) 1173 Opts.AddPath(A->getValue(), frontend::Quoted, false, true); 1174 for (const Arg *A : Args.filtered(OPT_isystem, OPT_iwithsysroot)) 1175 Opts.AddPath(A->getValue(), frontend::System, false, 1176 !A->getOption().matches(OPT_iwithsysroot)); 1177 for (const Arg *A : Args.filtered(OPT_iframework)) 1178 Opts.AddPath(A->getValue(), frontend::System, true, true); 1179 1180 // Add the paths for the various language specific isystem flags. 1181 for (const Arg *A : Args.filtered(OPT_c_isystem)) 1182 Opts.AddPath(A->getValue(), frontend::CSystem, false, true); 1183 for (const Arg *A : Args.filtered(OPT_cxx_isystem)) 1184 Opts.AddPath(A->getValue(), frontend::CXXSystem, false, true); 1185 for (const Arg *A : Args.filtered(OPT_objc_isystem)) 1186 Opts.AddPath(A->getValue(), frontend::ObjCSystem, false,true); 1187 for (const Arg *A : Args.filtered(OPT_objcxx_isystem)) 1188 Opts.AddPath(A->getValue(), frontend::ObjCXXSystem, false, true); 1189 1190 // Add the internal paths from a driver that detects standard include paths. 1191 for (const Arg *A : 1192 Args.filtered(OPT_internal_isystem, OPT_internal_externc_isystem)) { 1193 frontend::IncludeDirGroup Group = frontend::System; 1194 if (A->getOption().matches(OPT_internal_externc_isystem)) 1195 Group = frontend::ExternCSystem; 1196 Opts.AddPath(A->getValue(), Group, false, true); 1197 } 1198 1199 // Add the path prefixes which are implicitly treated as being system headers. 1200 for (const Arg *A : 1201 Args.filtered(OPT_system_header_prefix, OPT_no_system_header_prefix)) 1202 Opts.AddSystemHeaderPrefix( 1203 A->getValue(), A->getOption().matches(OPT_system_header_prefix)); 1204 1205 for (const Arg *A : Args.filtered(OPT_ivfsoverlay)) 1206 Opts.AddVFSOverlayFile(A->getValue()); 1207 } 1208 1209 void CompilerInvocation::setLangDefaults(LangOptions &Opts, InputKind IK, 1210 LangStandard::Kind LangStd) { 1211 // Set some properties which depend solely on the input kind; it would be nice 1212 // to move these to the language standard, and have the driver resolve the 1213 // input kind + language standard. 1214 if (IK == IK_Asm) { 1215 Opts.AsmPreprocessor = 1; 1216 } else if (IK == IK_ObjC || 1217 IK == IK_ObjCXX || 1218 IK == IK_PreprocessedObjC || 1219 IK == IK_PreprocessedObjCXX) { 1220 Opts.ObjC1 = Opts.ObjC2 = 1; 1221 } 1222 1223 if (LangStd == LangStandard::lang_unspecified) { 1224 // Based on the base language, pick one. 1225 switch (IK) { 1226 case IK_None: 1227 case IK_AST: 1228 case IK_LLVM_IR: 1229 llvm_unreachable("Invalid input kind!"); 1230 case IK_OpenCL: 1231 LangStd = LangStandard::lang_opencl; 1232 break; 1233 case IK_CUDA: 1234 case IK_PreprocessedCuda: 1235 LangStd = LangStandard::lang_cuda; 1236 break; 1237 case IK_Asm: 1238 case IK_C: 1239 case IK_PreprocessedC: 1240 case IK_ObjC: 1241 case IK_PreprocessedObjC: 1242 LangStd = LangStandard::lang_gnu11; 1243 break; 1244 case IK_CXX: 1245 case IK_PreprocessedCXX: 1246 case IK_ObjCXX: 1247 case IK_PreprocessedObjCXX: 1248 LangStd = LangStandard::lang_gnucxx98; 1249 break; 1250 } 1251 } 1252 1253 const LangStandard &Std = LangStandard::getLangStandardForKind(LangStd); 1254 Opts.LineComment = Std.hasLineComments(); 1255 Opts.C99 = Std.isC99(); 1256 Opts.C11 = Std.isC11(); 1257 Opts.CPlusPlus = Std.isCPlusPlus(); 1258 Opts.CPlusPlus11 = Std.isCPlusPlus11(); 1259 Opts.CPlusPlus14 = Std.isCPlusPlus14(); 1260 Opts.CPlusPlus1z = Std.isCPlusPlus1z(); 1261 Opts.Digraphs = Std.hasDigraphs(); 1262 Opts.GNUMode = Std.isGNUMode(); 1263 Opts.GNUInline = Std.isC89(); 1264 Opts.HexFloats = Std.hasHexFloats(); 1265 Opts.ImplicitInt = Std.hasImplicitInt(); 1266 1267 // Set OpenCL Version. 1268 Opts.OpenCL = LangStd == LangStandard::lang_opencl || IK == IK_OpenCL; 1269 if (LangStd == LangStandard::lang_opencl) 1270 Opts.OpenCLVersion = 100; 1271 else if (LangStd == LangStandard::lang_opencl11) 1272 Opts.OpenCLVersion = 110; 1273 else if (LangStd == LangStandard::lang_opencl12) 1274 Opts.OpenCLVersion = 120; 1275 else if (LangStd == LangStandard::lang_opencl20) 1276 Opts.OpenCLVersion = 200; 1277 1278 // OpenCL has some additional defaults. 1279 if (Opts.OpenCL) { 1280 Opts.AltiVec = 0; 1281 Opts.ZVector = 0; 1282 Opts.CXXOperatorNames = 1; 1283 Opts.LaxVectorConversions = 0; 1284 Opts.DefaultFPContract = 1; 1285 Opts.NativeHalfType = 1; 1286 } 1287 1288 Opts.CUDA = IK == IK_CUDA || IK == IK_PreprocessedCuda || 1289 LangStd == LangStandard::lang_cuda; 1290 1291 // OpenCL and C++ both have bool, true, false keywords. 1292 Opts.Bool = Opts.OpenCL || Opts.CPlusPlus; 1293 1294 // OpenCL has half keyword 1295 Opts.Half = Opts.OpenCL; 1296 1297 // C++ has wchar_t keyword. 1298 Opts.WChar = Opts.CPlusPlus; 1299 1300 Opts.GNUKeywords = Opts.GNUMode; 1301 Opts.CXXOperatorNames = Opts.CPlusPlus; 1302 1303 Opts.DollarIdents = !Opts.AsmPreprocessor; 1304 } 1305 1306 /// Attempt to parse a visibility value out of the given argument. 1307 static Visibility parseVisibility(Arg *arg, ArgList &args, 1308 DiagnosticsEngine &diags) { 1309 StringRef value = arg->getValue(); 1310 if (value == "default") { 1311 return DefaultVisibility; 1312 } else if (value == "hidden") { 1313 return HiddenVisibility; 1314 } else if (value == "protected") { 1315 // FIXME: diagnose if target does not support protected visibility 1316 return ProtectedVisibility; 1317 } 1318 1319 diags.Report(diag::err_drv_invalid_value) 1320 << arg->getAsString(args) << value; 1321 return DefaultVisibility; 1322 } 1323 1324 static void ParseLangArgs(LangOptions &Opts, ArgList &Args, InputKind IK, 1325 DiagnosticsEngine &Diags) { 1326 // FIXME: Cleanup per-file based stuff. 1327 LangStandard::Kind LangStd = LangStandard::lang_unspecified; 1328 if (const Arg *A = Args.getLastArg(OPT_std_EQ)) { 1329 LangStd = llvm::StringSwitch<LangStandard::Kind>(A->getValue()) 1330 #define LANGSTANDARD(id, name, desc, features) \ 1331 .Case(name, LangStandard::lang_##id) 1332 #include "clang/Frontend/LangStandards.def" 1333 .Default(LangStandard::lang_unspecified); 1334 if (LangStd == LangStandard::lang_unspecified) 1335 Diags.Report(diag::err_drv_invalid_value) 1336 << A->getAsString(Args) << A->getValue(); 1337 else { 1338 // Valid standard, check to make sure language and standard are 1339 // compatible. 1340 const LangStandard &Std = LangStandard::getLangStandardForKind(LangStd); 1341 switch (IK) { 1342 case IK_C: 1343 case IK_ObjC: 1344 case IK_PreprocessedC: 1345 case IK_PreprocessedObjC: 1346 if (!(Std.isC89() || Std.isC99())) 1347 Diags.Report(diag::err_drv_argument_not_allowed_with) 1348 << A->getAsString(Args) << "C/ObjC"; 1349 break; 1350 case IK_CXX: 1351 case IK_ObjCXX: 1352 case IK_PreprocessedCXX: 1353 case IK_PreprocessedObjCXX: 1354 if (!Std.isCPlusPlus()) 1355 Diags.Report(diag::err_drv_argument_not_allowed_with) 1356 << A->getAsString(Args) << "C++/ObjC++"; 1357 break; 1358 case IK_OpenCL: 1359 if (!Std.isC99()) 1360 Diags.Report(diag::err_drv_argument_not_allowed_with) 1361 << A->getAsString(Args) << "OpenCL"; 1362 break; 1363 case IK_CUDA: 1364 case IK_PreprocessedCuda: 1365 if (!Std.isCPlusPlus()) 1366 Diags.Report(diag::err_drv_argument_not_allowed_with) 1367 << A->getAsString(Args) << "CUDA"; 1368 break; 1369 default: 1370 break; 1371 } 1372 } 1373 } 1374 1375 // -cl-std only applies for OpenCL language standards. 1376 // Override the -std option in this case. 1377 if (const Arg *A = Args.getLastArg(OPT_cl_std_EQ)) { 1378 LangStandard::Kind OpenCLLangStd 1379 = llvm::StringSwitch<LangStandard::Kind>(A->getValue()) 1380 .Case("CL", LangStandard::lang_opencl) 1381 .Case("CL1.1", LangStandard::lang_opencl11) 1382 .Case("CL1.2", LangStandard::lang_opencl12) 1383 .Case("CL2.0", LangStandard::lang_opencl20) 1384 .Default(LangStandard::lang_unspecified); 1385 1386 if (OpenCLLangStd == LangStandard::lang_unspecified) { 1387 Diags.Report(diag::err_drv_invalid_value) 1388 << A->getAsString(Args) << A->getValue(); 1389 } 1390 else 1391 LangStd = OpenCLLangStd; 1392 } 1393 1394 CompilerInvocation::setLangDefaults(Opts, IK, LangStd); 1395 1396 // We abuse '-f[no-]gnu-keywords' to force overriding all GNU-extension 1397 // keywords. This behavior is provided by GCC's poorly named '-fasm' flag, 1398 // while a subset (the non-C++ GNU keywords) is provided by GCC's 1399 // '-fgnu-keywords'. Clang conflates the two for simplicity under the single 1400 // name, as it doesn't seem a useful distinction. 1401 Opts.GNUKeywords = Args.hasFlag(OPT_fgnu_keywords, OPT_fno_gnu_keywords, 1402 Opts.GNUKeywords); 1403 1404 if (Args.hasArg(OPT_fno_operator_names)) 1405 Opts.CXXOperatorNames = 0; 1406 1407 if (Args.hasArg(OPT_fcuda_is_device)) 1408 Opts.CUDAIsDevice = 1; 1409 1410 if (Args.hasArg(OPT_fcuda_uses_libdevice)) 1411 Opts.CUDAUsesLibDevice = 1; 1412 1413 if (Args.hasArg(OPT_fcuda_allow_host_calls_from_host_device)) 1414 Opts.CUDAAllowHostCallsFromHostDevice = 1; 1415 1416 if (Args.hasArg(OPT_fcuda_disable_target_call_checks)) 1417 Opts.CUDADisableTargetCallChecks = 1; 1418 1419 if (Opts.ObjC1) { 1420 if (Arg *arg = Args.getLastArg(OPT_fobjc_runtime_EQ)) { 1421 StringRef value = arg->getValue(); 1422 if (Opts.ObjCRuntime.tryParse(value)) 1423 Diags.Report(diag::err_drv_unknown_objc_runtime) << value; 1424 } 1425 1426 if (Args.hasArg(OPT_fobjc_gc_only)) 1427 Opts.setGC(LangOptions::GCOnly); 1428 else if (Args.hasArg(OPT_fobjc_gc)) 1429 Opts.setGC(LangOptions::HybridGC); 1430 else if (Args.hasArg(OPT_fobjc_arc)) { 1431 Opts.ObjCAutoRefCount = 1; 1432 if (!Opts.ObjCRuntime.allowsARC()) 1433 Diags.Report(diag::err_arc_unsupported_on_runtime); 1434 1435 // Only set ObjCARCWeak if ARC is enabled. 1436 if (Args.hasArg(OPT_fobjc_runtime_has_weak)) 1437 Opts.ObjCARCWeak = 1; 1438 else 1439 Opts.ObjCARCWeak = Opts.ObjCRuntime.allowsWeak(); 1440 } 1441 1442 if (Args.hasArg(OPT_fno_objc_infer_related_result_type)) 1443 Opts.ObjCInferRelatedResultType = 0; 1444 1445 if (Args.hasArg(OPT_fobjc_subscripting_legacy_runtime)) 1446 Opts.ObjCSubscriptingLegacyRuntime = 1447 (Opts.ObjCRuntime.getKind() == ObjCRuntime::FragileMacOSX); 1448 } 1449 1450 if (Args.hasArg(OPT_fgnu89_inline)) { 1451 if (Opts.CPlusPlus) 1452 Diags.Report(diag::err_drv_argument_not_allowed_with) << "-fgnu89-inline" 1453 << "C++/ObjC++"; 1454 else 1455 Opts.GNUInline = 1; 1456 } 1457 1458 if (Args.hasArg(OPT_fapple_kext)) { 1459 if (!Opts.CPlusPlus) 1460 Diags.Report(diag::warn_c_kext); 1461 else 1462 Opts.AppleKext = 1; 1463 } 1464 1465 if (Args.hasArg(OPT_print_ivar_layout)) 1466 Opts.ObjCGCBitmapPrint = 1; 1467 if (Args.hasArg(OPT_fno_constant_cfstrings)) 1468 Opts.NoConstantCFStrings = 1; 1469 1470 if (Args.hasArg(OPT_faltivec)) 1471 Opts.AltiVec = 1; 1472 1473 if (Args.hasArg(OPT_fzvector)) 1474 Opts.ZVector = 1; 1475 1476 if (Args.hasArg(OPT_pthread)) 1477 Opts.POSIXThreads = 1; 1478 1479 // The value-visibility mode defaults to "default". 1480 if (Arg *visOpt = Args.getLastArg(OPT_fvisibility)) { 1481 Opts.setValueVisibilityMode(parseVisibility(visOpt, Args, Diags)); 1482 } else { 1483 Opts.setValueVisibilityMode(DefaultVisibility); 1484 } 1485 1486 // The type-visibility mode defaults to the value-visibility mode. 1487 if (Arg *typeVisOpt = Args.getLastArg(OPT_ftype_visibility)) { 1488 Opts.setTypeVisibilityMode(parseVisibility(typeVisOpt, Args, Diags)); 1489 } else { 1490 Opts.setTypeVisibilityMode(Opts.getValueVisibilityMode()); 1491 } 1492 1493 if (Args.hasArg(OPT_fvisibility_inlines_hidden)) 1494 Opts.InlineVisibilityHidden = 1; 1495 1496 if (Args.hasArg(OPT_ftrapv)) { 1497 Opts.setSignedOverflowBehavior(LangOptions::SOB_Trapping); 1498 // Set the handler, if one is specified. 1499 Opts.OverflowHandler = 1500 Args.getLastArgValue(OPT_ftrapv_handler); 1501 } 1502 else if (Args.hasArg(OPT_fwrapv)) 1503 Opts.setSignedOverflowBehavior(LangOptions::SOB_Defined); 1504 1505 Opts.MSVCCompat = Args.hasArg(OPT_fms_compatibility); 1506 Opts.MicrosoftExt = Opts.MSVCCompat || Args.hasArg(OPT_fms_extensions); 1507 Opts.AsmBlocks = Args.hasArg(OPT_fasm_blocks) || Opts.MicrosoftExt; 1508 Opts.MSCompatibilityVersion = 0; 1509 if (const Arg *A = Args.getLastArg(OPT_fms_compatibility_version)) { 1510 VersionTuple VT; 1511 if (VT.tryParse(A->getValue())) 1512 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) 1513 << A->getValue(); 1514 Opts.MSCompatibilityVersion = VT.getMajor() * 10000000 + 1515 VT.getMinor().getValueOr(0) * 100000 + 1516 VT.getSubminor().getValueOr(0); 1517 } 1518 1519 // Mimicing gcc's behavior, trigraphs are only enabled if -trigraphs 1520 // is specified, or -std is set to a conforming mode. 1521 // Trigraphs are disabled by default in c++1z onwards. 1522 Opts.Trigraphs = !Opts.GNUMode && !Opts.MSVCCompat && !Opts.CPlusPlus1z; 1523 Opts.Trigraphs = 1524 Args.hasFlag(OPT_ftrigraphs, OPT_fno_trigraphs, Opts.Trigraphs); 1525 1526 Opts.DollarIdents = Args.hasFlag(OPT_fdollars_in_identifiers, 1527 OPT_fno_dollars_in_identifiers, 1528 Opts.DollarIdents); 1529 Opts.PascalStrings = Args.hasArg(OPT_fpascal_strings); 1530 Opts.VtorDispMode = getLastArgIntValue(Args, OPT_vtordisp_mode_EQ, 1, Diags); 1531 Opts.Borland = Args.hasArg(OPT_fborland_extensions); 1532 Opts.WritableStrings = Args.hasArg(OPT_fwritable_strings); 1533 Opts.ConstStrings = Args.hasFlag(OPT_fconst_strings, OPT_fno_const_strings, 1534 Opts.ConstStrings); 1535 if (Args.hasArg(OPT_fno_lax_vector_conversions)) 1536 Opts.LaxVectorConversions = 0; 1537 if (Args.hasArg(OPT_fno_threadsafe_statics)) 1538 Opts.ThreadsafeStatics = 0; 1539 Opts.Exceptions = Args.hasArg(OPT_fexceptions); 1540 Opts.ObjCExceptions = Args.hasArg(OPT_fobjc_exceptions); 1541 Opts.CXXExceptions = Args.hasArg(OPT_fcxx_exceptions); 1542 Opts.SjLjExceptions = Args.hasArg(OPT_fsjlj_exceptions); 1543 Opts.TraditionalCPP = Args.hasArg(OPT_traditional_cpp); 1544 1545 Opts.RTTI = !Args.hasArg(OPT_fno_rtti); 1546 Opts.RTTIData = Opts.RTTI && !Args.hasArg(OPT_fno_rtti_data); 1547 Opts.Blocks = Args.hasArg(OPT_fblocks); 1548 Opts.BlocksRuntimeOptional = Args.hasArg(OPT_fblocks_runtime_optional); 1549 Opts.Modules = Args.hasArg(OPT_fmodules); 1550 Opts.ModulesStrictDeclUse = Args.hasArg(OPT_fmodules_strict_decluse); 1551 Opts.ModulesDeclUse = 1552 Args.hasArg(OPT_fmodules_decluse) || Opts.ModulesStrictDeclUse; 1553 Opts.ModulesLocalVisibility = 1554 Args.hasArg(OPT_fmodules_local_submodule_visibility); 1555 Opts.ModulesHideInternalLinkage = 1556 !Args.hasArg(OPT_fno_modules_hide_internal_linkage); 1557 Opts.ModulesSearchAll = Opts.Modules && 1558 !Args.hasArg(OPT_fno_modules_search_all) && 1559 Args.hasArg(OPT_fmodules_search_all); 1560 Opts.ModulesErrorRecovery = !Args.hasArg(OPT_fno_modules_error_recovery); 1561 Opts.ImplicitModules = !Args.hasArg(OPT_fno_implicit_modules); 1562 Opts.CharIsSigned = Opts.OpenCL || !Args.hasArg(OPT_fno_signed_char); 1563 Opts.WChar = Opts.CPlusPlus && !Args.hasArg(OPT_fno_wchar); 1564 Opts.ShortWChar = Args.hasFlag(OPT_fshort_wchar, OPT_fno_short_wchar, false); 1565 Opts.ShortEnums = Args.hasArg(OPT_fshort_enums); 1566 Opts.Freestanding = Args.hasArg(OPT_ffreestanding); 1567 Opts.NoBuiltin = Args.hasArg(OPT_fno_builtin) || Opts.Freestanding; 1568 Opts.NoMathBuiltin = Args.hasArg(OPT_fno_math_builtin); 1569 Opts.AssumeSaneOperatorNew = !Args.hasArg(OPT_fno_assume_sane_operator_new); 1570 Opts.SizedDeallocation = Args.hasArg(OPT_fsized_deallocation); 1571 Opts.ConceptsTS = Args.hasArg(OPT_fconcepts_ts); 1572 Opts.HeinousExtensions = Args.hasArg(OPT_fheinous_gnu_extensions); 1573 Opts.AccessControl = !Args.hasArg(OPT_fno_access_control); 1574 Opts.ElideConstructors = !Args.hasArg(OPT_fno_elide_constructors); 1575 Opts.MathErrno = !Opts.OpenCL && Args.hasArg(OPT_fmath_errno); 1576 Opts.InstantiationDepth = 1577 getLastArgIntValue(Args, OPT_ftemplate_depth, 256, Diags); 1578 Opts.ArrowDepth = 1579 getLastArgIntValue(Args, OPT_foperator_arrow_depth, 256, Diags); 1580 Opts.ConstexprCallDepth = 1581 getLastArgIntValue(Args, OPT_fconstexpr_depth, 512, Diags); 1582 Opts.ConstexprStepLimit = 1583 getLastArgIntValue(Args, OPT_fconstexpr_steps, 1048576, Diags); 1584 Opts.BracketDepth = getLastArgIntValue(Args, OPT_fbracket_depth, 256, Diags); 1585 Opts.DelayedTemplateParsing = Args.hasArg(OPT_fdelayed_template_parsing); 1586 Opts.NumLargeByValueCopy = 1587 getLastArgIntValue(Args, OPT_Wlarge_by_value_copy_EQ, 0, Diags); 1588 Opts.MSBitfields = Args.hasArg(OPT_mms_bitfields); 1589 Opts.ObjCConstantStringClass = 1590 Args.getLastArgValue(OPT_fconstant_string_class); 1591 Opts.ObjCDefaultSynthProperties = 1592 !Args.hasArg(OPT_disable_objc_default_synthesize_properties); 1593 Opts.EncodeExtendedBlockSig = 1594 Args.hasArg(OPT_fencode_extended_block_signature); 1595 Opts.EmitAllDecls = Args.hasArg(OPT_femit_all_decls); 1596 Opts.PackStruct = getLastArgIntValue(Args, OPT_fpack_struct_EQ, 0, Diags); 1597 Opts.MaxTypeAlign = getLastArgIntValue(Args, OPT_fmax_type_align_EQ, 0, Diags); 1598 Opts.PICLevel = getLastArgIntValue(Args, OPT_pic_level, 0, Diags); 1599 Opts.PIELevel = getLastArgIntValue(Args, OPT_pie_level, 0, Diags); 1600 Opts.Static = Args.hasArg(OPT_static_define); 1601 Opts.DumpRecordLayoutsSimple = Args.hasArg(OPT_fdump_record_layouts_simple); 1602 Opts.DumpRecordLayouts = Opts.DumpRecordLayoutsSimple 1603 || Args.hasArg(OPT_fdump_record_layouts); 1604 Opts.DumpVTableLayouts = Args.hasArg(OPT_fdump_vtable_layouts); 1605 Opts.SpellChecking = !Args.hasArg(OPT_fno_spell_checking); 1606 Opts.NoBitFieldTypeAlign = Args.hasArg(OPT_fno_bitfield_type_align); 1607 Opts.SinglePrecisionConstants = Args.hasArg(OPT_cl_single_precision_constant); 1608 Opts.FastRelaxedMath = Args.hasArg(OPT_cl_fast_relaxed_math); 1609 Opts.MRTD = Args.hasArg(OPT_mrtd); 1610 Opts.HexagonQdsp6Compat = Args.hasArg(OPT_mqdsp6_compat); 1611 Opts.FakeAddressSpaceMap = Args.hasArg(OPT_ffake_address_space_map); 1612 Opts.ParseUnknownAnytype = Args.hasArg(OPT_funknown_anytype); 1613 Opts.DebuggerSupport = Args.hasArg(OPT_fdebugger_support); 1614 Opts.DebuggerCastResultToId = Args.hasArg(OPT_fdebugger_cast_result_to_id); 1615 Opts.DebuggerObjCLiteral = Args.hasArg(OPT_fdebugger_objc_literal); 1616 Opts.ApplePragmaPack = Args.hasArg(OPT_fapple_pragma_pack); 1617 Opts.CurrentModule = Args.getLastArgValue(OPT_fmodule_name); 1618 Opts.AppExt = Args.hasArg(OPT_fapplication_extension); 1619 Opts.ImplementationOfModule = 1620 Args.getLastArgValue(OPT_fmodule_implementation_of); 1621 Opts.ModuleFeatures = Args.getAllArgValues(OPT_fmodule_feature); 1622 std::sort(Opts.ModuleFeatures.begin(), Opts.ModuleFeatures.end()); 1623 Opts.NativeHalfType |= Args.hasArg(OPT_fnative_half_type); 1624 Opts.HalfArgsAndReturns = Args.hasArg(OPT_fallow_half_arguments_and_returns); 1625 Opts.GNUAsm = !Args.hasArg(OPT_fno_gnu_inline_asm); 1626 1627 if (!Opts.CurrentModule.empty() && !Opts.ImplementationOfModule.empty() && 1628 Opts.CurrentModule != Opts.ImplementationOfModule) { 1629 Diags.Report(diag::err_conflicting_module_names) 1630 << Opts.CurrentModule << Opts.ImplementationOfModule; 1631 } 1632 1633 // For now, we only support local submodule visibility in C++ (because we 1634 // heavily depend on the ODR for merging redefinitions). 1635 if (Opts.ModulesLocalVisibility && !Opts.CPlusPlus) 1636 Diags.Report(diag::err_drv_argument_not_allowed_with) 1637 << "-fmodules-local-submodule-visibility" << "C"; 1638 1639 if (Arg *A = Args.getLastArg(OPT_faddress_space_map_mangling_EQ)) { 1640 switch (llvm::StringSwitch<unsigned>(A->getValue()) 1641 .Case("target", LangOptions::ASMM_Target) 1642 .Case("no", LangOptions::ASMM_Off) 1643 .Case("yes", LangOptions::ASMM_On) 1644 .Default(255)) { 1645 default: 1646 Diags.Report(diag::err_drv_invalid_value) 1647 << "-faddress-space-map-mangling=" << A->getValue(); 1648 break; 1649 case LangOptions::ASMM_Target: 1650 Opts.setAddressSpaceMapMangling(LangOptions::ASMM_Target); 1651 break; 1652 case LangOptions::ASMM_On: 1653 Opts.setAddressSpaceMapMangling(LangOptions::ASMM_On); 1654 break; 1655 case LangOptions::ASMM_Off: 1656 Opts.setAddressSpaceMapMangling(LangOptions::ASMM_Off); 1657 break; 1658 } 1659 } 1660 1661 if (Arg *A = Args.getLastArg(OPT_fms_memptr_rep_EQ)) { 1662 LangOptions::PragmaMSPointersToMembersKind InheritanceModel = 1663 llvm::StringSwitch<LangOptions::PragmaMSPointersToMembersKind>( 1664 A->getValue()) 1665 .Case("single", 1666 LangOptions::PPTMK_FullGeneralitySingleInheritance) 1667 .Case("multiple", 1668 LangOptions::PPTMK_FullGeneralityMultipleInheritance) 1669 .Case("virtual", 1670 LangOptions::PPTMK_FullGeneralityVirtualInheritance) 1671 .Default(LangOptions::PPTMK_BestCase); 1672 if (InheritanceModel == LangOptions::PPTMK_BestCase) 1673 Diags.Report(diag::err_drv_invalid_value) 1674 << "-fms-memptr-rep=" << A->getValue(); 1675 1676 Opts.setMSPointerToMemberRepresentationMethod(InheritanceModel); 1677 } 1678 1679 // Check if -fopenmp is specified. 1680 Opts.OpenMP = Args.hasArg(options::OPT_fopenmp); 1681 Opts.OpenMPUseTLS = 1682 Opts.OpenMP && !Args.hasArg(options::OPT_fnoopenmp_use_tls); 1683 1684 // Record whether the __DEPRECATED define was requested. 1685 Opts.Deprecated = Args.hasFlag(OPT_fdeprecated_macro, 1686 OPT_fno_deprecated_macro, 1687 Opts.Deprecated); 1688 1689 // FIXME: Eliminate this dependency. 1690 unsigned Opt = getOptimizationLevel(Args, IK, Diags), 1691 OptSize = getOptimizationLevelSize(Args); 1692 Opts.Optimize = Opt != 0; 1693 Opts.OptimizeSize = OptSize != 0; 1694 1695 // This is the __NO_INLINE__ define, which just depends on things like the 1696 // optimization level and -fno-inline, not actually whether the backend has 1697 // inlining enabled. 1698 Opts.NoInlineDefine = !Opt || Args.hasArg(OPT_fno_inline); 1699 1700 Opts.FastMath = Args.hasArg(OPT_ffast_math) || 1701 Args.hasArg(OPT_cl_fast_relaxed_math); 1702 Opts.FiniteMathOnly = Args.hasArg(OPT_ffinite_math_only) || 1703 Args.hasArg(OPT_cl_finite_math_only) || 1704 Args.hasArg(OPT_cl_fast_relaxed_math); 1705 1706 Opts.RetainCommentsFromSystemHeaders = 1707 Args.hasArg(OPT_fretain_comments_from_system_headers); 1708 1709 unsigned SSP = getLastArgIntValue(Args, OPT_stack_protector, 0, Diags); 1710 switch (SSP) { 1711 default: 1712 Diags.Report(diag::err_drv_invalid_value) 1713 << Args.getLastArg(OPT_stack_protector)->getAsString(Args) << SSP; 1714 break; 1715 case 0: Opts.setStackProtector(LangOptions::SSPOff); break; 1716 case 1: Opts.setStackProtector(LangOptions::SSPOn); break; 1717 case 2: Opts.setStackProtector(LangOptions::SSPStrong); break; 1718 case 3: Opts.setStackProtector(LangOptions::SSPReq); break; 1719 } 1720 1721 // Parse -fsanitize= arguments. 1722 parseSanitizerKinds("-fsanitize=", Args.getAllArgValues(OPT_fsanitize_EQ), 1723 Diags, Opts.Sanitize); 1724 // -fsanitize-address-field-padding=N has to be a LangOpt, parse it here. 1725 Opts.SanitizeAddressFieldPadding = 1726 getLastArgIntValue(Args, OPT_fsanitize_address_field_padding, 0, Diags); 1727 Opts.SanitizerBlacklistFiles = Args.getAllArgValues(OPT_fsanitize_blacklist); 1728 } 1729 1730 static void ParsePreprocessorArgs(PreprocessorOptions &Opts, ArgList &Args, 1731 FileManager &FileMgr, 1732 DiagnosticsEngine &Diags) { 1733 using namespace options; 1734 Opts.ImplicitPCHInclude = Args.getLastArgValue(OPT_include_pch); 1735 Opts.ImplicitPTHInclude = Args.getLastArgValue(OPT_include_pth); 1736 if (const Arg *A = Args.getLastArg(OPT_token_cache)) 1737 Opts.TokenCache = A->getValue(); 1738 else 1739 Opts.TokenCache = Opts.ImplicitPTHInclude; 1740 Opts.UsePredefines = !Args.hasArg(OPT_undef); 1741 Opts.DetailedRecord = Args.hasArg(OPT_detailed_preprocessing_record); 1742 Opts.DisablePCHValidation = Args.hasArg(OPT_fno_validate_pch); 1743 1744 Opts.DumpDeserializedPCHDecls = Args.hasArg(OPT_dump_deserialized_pch_decls); 1745 for (const Arg *A : Args.filtered(OPT_error_on_deserialized_pch_decl)) 1746 Opts.DeserializedPCHDeclsToErrorOn.insert(A->getValue()); 1747 1748 if (const Arg *A = Args.getLastArg(OPT_preamble_bytes_EQ)) { 1749 StringRef Value(A->getValue()); 1750 size_t Comma = Value.find(','); 1751 unsigned Bytes = 0; 1752 unsigned EndOfLine = 0; 1753 1754 if (Comma == StringRef::npos || 1755 Value.substr(0, Comma).getAsInteger(10, Bytes) || 1756 Value.substr(Comma + 1).getAsInteger(10, EndOfLine)) 1757 Diags.Report(diag::err_drv_preamble_format); 1758 else { 1759 Opts.PrecompiledPreambleBytes.first = Bytes; 1760 Opts.PrecompiledPreambleBytes.second = (EndOfLine != 0); 1761 } 1762 } 1763 1764 // Add macros from the command line. 1765 for (const Arg *A : Args.filtered(OPT_D, OPT_U)) { 1766 if (A->getOption().matches(OPT_D)) 1767 Opts.addMacroDef(A->getValue()); 1768 else 1769 Opts.addMacroUndef(A->getValue()); 1770 } 1771 1772 Opts.MacroIncludes = Args.getAllArgValues(OPT_imacros); 1773 1774 // Add the ordered list of -includes. 1775 for (const Arg *A : Args.filtered(OPT_include)) 1776 Opts.Includes.emplace_back(A->getValue()); 1777 1778 for (const Arg *A : Args.filtered(OPT_chain_include)) 1779 Opts.ChainedIncludes.emplace_back(A->getValue()); 1780 1781 // Include 'altivec.h' if -faltivec option present 1782 if (Args.hasArg(OPT_faltivec)) 1783 Opts.Includes.emplace_back("altivec.h"); 1784 1785 for (const Arg *A : Args.filtered(OPT_remap_file)) { 1786 std::pair<StringRef, StringRef> Split = StringRef(A->getValue()).split(';'); 1787 1788 if (Split.second.empty()) { 1789 Diags.Report(diag::err_drv_invalid_remap_file) << A->getAsString(Args); 1790 continue; 1791 } 1792 1793 Opts.addRemappedFile(Split.first, Split.second); 1794 } 1795 1796 if (Arg *A = Args.getLastArg(OPT_fobjc_arc_cxxlib_EQ)) { 1797 StringRef Name = A->getValue(); 1798 unsigned Library = llvm::StringSwitch<unsigned>(Name) 1799 .Case("libc++", ARCXX_libcxx) 1800 .Case("libstdc++", ARCXX_libstdcxx) 1801 .Case("none", ARCXX_nolib) 1802 .Default(~0U); 1803 if (Library == ~0U) 1804 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Name; 1805 else 1806 Opts.ObjCXXARCStandardLibrary = (ObjCXXARCStandardLibraryKind)Library; 1807 } 1808 } 1809 1810 static void ParsePreprocessorOutputArgs(PreprocessorOutputOptions &Opts, 1811 ArgList &Args, 1812 frontend::ActionKind Action) { 1813 using namespace options; 1814 1815 switch (Action) { 1816 case frontend::ASTDeclList: 1817 case frontend::ASTDump: 1818 case frontend::ASTPrint: 1819 case frontend::ASTView: 1820 case frontend::EmitAssembly: 1821 case frontend::EmitBC: 1822 case frontend::EmitHTML: 1823 case frontend::EmitLLVM: 1824 case frontend::EmitLLVMOnly: 1825 case frontend::EmitCodeGenOnly: 1826 case frontend::EmitObj: 1827 case frontend::FixIt: 1828 case frontend::GenerateModule: 1829 case frontend::GeneratePCH: 1830 case frontend::GeneratePTH: 1831 case frontend::ParseSyntaxOnly: 1832 case frontend::ModuleFileInfo: 1833 case frontend::VerifyPCH: 1834 case frontend::PluginAction: 1835 case frontend::PrintDeclContext: 1836 case frontend::RewriteObjC: 1837 case frontend::RewriteTest: 1838 case frontend::RunAnalysis: 1839 case frontend::MigrateSource: 1840 Opts.ShowCPP = 0; 1841 break; 1842 1843 case frontend::DumpRawTokens: 1844 case frontend::DumpTokens: 1845 case frontend::InitOnly: 1846 case frontend::PrintPreamble: 1847 case frontend::PrintPreprocessedInput: 1848 case frontend::RewriteMacros: 1849 case frontend::RunPreprocessorOnly: 1850 Opts.ShowCPP = !Args.hasArg(OPT_dM); 1851 break; 1852 } 1853 1854 Opts.ShowComments = Args.hasArg(OPT_C); 1855 Opts.ShowLineMarkers = !Args.hasArg(OPT_P); 1856 Opts.ShowMacroComments = Args.hasArg(OPT_CC); 1857 Opts.ShowMacros = Args.hasArg(OPT_dM) || Args.hasArg(OPT_dD); 1858 Opts.RewriteIncludes = Args.hasArg(OPT_frewrite_includes); 1859 Opts.UseLineDirectives = Args.hasArg(OPT_fuse_line_directives); 1860 } 1861 1862 static void ParseTargetArgs(TargetOptions &Opts, ArgList &Args) { 1863 using namespace options; 1864 Opts.ABI = Args.getLastArgValue(OPT_target_abi); 1865 Opts.CPU = Args.getLastArgValue(OPT_target_cpu); 1866 Opts.FPMath = Args.getLastArgValue(OPT_mfpmath); 1867 Opts.FeaturesAsWritten = Args.getAllArgValues(OPT_target_feature); 1868 Opts.LinkerVersion = Args.getLastArgValue(OPT_target_linker_version); 1869 Opts.Triple = llvm::Triple::normalize(Args.getLastArgValue(OPT_triple)); 1870 Opts.Reciprocals = Args.getAllArgValues(OPT_mrecip_EQ); 1871 // Use the default target triple if unspecified. 1872 if (Opts.Triple.empty()) 1873 Opts.Triple = llvm::sys::getDefaultTargetTriple(); 1874 } 1875 1876 bool CompilerInvocation::CreateFromArgs(CompilerInvocation &Res, 1877 const char *const *ArgBegin, 1878 const char *const *ArgEnd, 1879 DiagnosticsEngine &Diags) { 1880 bool Success = true; 1881 1882 // Parse the arguments. 1883 std::unique_ptr<OptTable> Opts(createDriverOptTable()); 1884 const unsigned IncludedFlagsBitmask = options::CC1Option; 1885 unsigned MissingArgIndex, MissingArgCount; 1886 InputArgList Args = 1887 Opts->ParseArgs(llvm::makeArrayRef(ArgBegin, ArgEnd), MissingArgIndex, 1888 MissingArgCount, IncludedFlagsBitmask); 1889 1890 // Check for missing argument error. 1891 if (MissingArgCount) { 1892 Diags.Report(diag::err_drv_missing_argument) 1893 << Args.getArgString(MissingArgIndex) << MissingArgCount; 1894 Success = false; 1895 } 1896 1897 // Issue errors on unknown arguments. 1898 for (const Arg *A : Args.filtered(OPT_UNKNOWN)) { 1899 Diags.Report(diag::err_drv_unknown_argument) << A->getAsString(Args); 1900 Success = false; 1901 } 1902 1903 Success &= ParseAnalyzerArgs(*Res.getAnalyzerOpts(), Args, Diags); 1904 Success &= ParseMigratorArgs(Res.getMigratorOpts(), Args); 1905 ParseDependencyOutputArgs(Res.getDependencyOutputOpts(), Args); 1906 Success &= ParseDiagnosticArgs(Res.getDiagnosticOpts(), Args, &Diags); 1907 ParseCommentArgs(Res.getLangOpts()->CommentOpts, Args); 1908 ParseFileSystemArgs(Res.getFileSystemOpts(), Args); 1909 // FIXME: We shouldn't have to pass the DashX option around here 1910 InputKind DashX = ParseFrontendArgs(Res.getFrontendOpts(), Args, Diags); 1911 ParseTargetArgs(Res.getTargetOpts(), Args); 1912 Success &= ParseCodeGenArgs(Res.getCodeGenOpts(), Args, DashX, Diags, 1913 Res.getTargetOpts()); 1914 ParseHeaderSearchArgs(Res.getHeaderSearchOpts(), Args); 1915 if (DashX == IK_AST || DashX == IK_LLVM_IR) { 1916 // ObjCAAutoRefCount and Sanitize LangOpts are used to setup the 1917 // PassManager in BackendUtil.cpp. They need to be initializd no matter 1918 // what the input type is. 1919 if (Args.hasArg(OPT_fobjc_arc)) 1920 Res.getLangOpts()->ObjCAutoRefCount = 1; 1921 parseSanitizerKinds("-fsanitize=", Args.getAllArgValues(OPT_fsanitize_EQ), 1922 Diags, Res.getLangOpts()->Sanitize); 1923 } else { 1924 // Other LangOpts are only initialzed when the input is not AST or LLVM IR. 1925 ParseLangArgs(*Res.getLangOpts(), Args, DashX, Diags); 1926 if (Res.getFrontendOpts().ProgramAction == frontend::RewriteObjC) 1927 Res.getLangOpts()->ObjCExceptions = 1; 1928 } 1929 // FIXME: ParsePreprocessorArgs uses the FileManager to read the contents of 1930 // PCH file and find the original header name. Remove the need to do that in 1931 // ParsePreprocessorArgs and remove the FileManager 1932 // parameters from the function and the "FileManager.h" #include. 1933 FileManager FileMgr(Res.getFileSystemOpts()); 1934 ParsePreprocessorArgs(Res.getPreprocessorOpts(), Args, FileMgr, Diags); 1935 ParsePreprocessorOutputArgs(Res.getPreprocessorOutputOpts(), Args, 1936 Res.getFrontendOpts().ProgramAction); 1937 return Success; 1938 } 1939 1940 namespace { 1941 1942 class ModuleSignature { 1943 SmallVector<uint64_t, 16> Data; 1944 unsigned CurBit; 1945 uint64_t CurValue; 1946 1947 public: 1948 ModuleSignature() : CurBit(0), CurValue(0) { } 1949 1950 void add(uint64_t Value, unsigned Bits); 1951 void add(StringRef Value); 1952 void flush(); 1953 1954 llvm::APInt getAsInteger() const; 1955 }; 1956 } 1957 1958 void ModuleSignature::add(uint64_t Value, unsigned int NumBits) { 1959 CurValue |= Value << CurBit; 1960 if (CurBit + NumBits < 64) { 1961 CurBit += NumBits; 1962 return; 1963 } 1964 1965 // Add the current word. 1966 Data.push_back(CurValue); 1967 1968 if (CurBit) 1969 CurValue = Value >> (64-CurBit); 1970 else 1971 CurValue = 0; 1972 CurBit = (CurBit+NumBits) & 63; 1973 } 1974 1975 void ModuleSignature::flush() { 1976 if (CurBit == 0) 1977 return; 1978 1979 Data.push_back(CurValue); 1980 CurBit = 0; 1981 CurValue = 0; 1982 } 1983 1984 void ModuleSignature::add(StringRef Value) { 1985 for (StringRef::iterator I = Value.begin(), IEnd = Value.end(); I != IEnd;++I) 1986 add(*I, 8); 1987 } 1988 1989 llvm::APInt ModuleSignature::getAsInteger() const { 1990 return llvm::APInt(Data.size() * 64, Data); 1991 } 1992 1993 std::string CompilerInvocation::getModuleHash() const { 1994 // Note: For QoI reasons, the things we use as a hash here should all be 1995 // dumped via the -module-info flag. 1996 using llvm::hash_code; 1997 using llvm::hash_value; 1998 using llvm::hash_combine; 1999 2000 // Start the signature with the compiler version. 2001 // FIXME: We'd rather use something more cryptographically sound than 2002 // CityHash, but this will do for now. 2003 hash_code code = hash_value(getClangFullRepositoryVersion()); 2004 2005 // Extend the signature with the language options 2006 #define LANGOPT(Name, Bits, Default, Description) \ 2007 code = hash_combine(code, LangOpts->Name); 2008 #define ENUM_LANGOPT(Name, Type, Bits, Default, Description) \ 2009 code = hash_combine(code, static_cast<unsigned>(LangOpts->get##Name())); 2010 #define BENIGN_LANGOPT(Name, Bits, Default, Description) 2011 #define BENIGN_ENUM_LANGOPT(Name, Type, Bits, Default, Description) 2012 #include "clang/Basic/LangOptions.def" 2013 2014 for (StringRef Feature : LangOpts->ModuleFeatures) 2015 code = hash_combine(code, Feature); 2016 2017 // Extend the signature with the target options. 2018 code = hash_combine(code, TargetOpts->Triple, TargetOpts->CPU, 2019 TargetOpts->ABI); 2020 for (unsigned i = 0, n = TargetOpts->FeaturesAsWritten.size(); i != n; ++i) 2021 code = hash_combine(code, TargetOpts->FeaturesAsWritten[i]); 2022 2023 // Extend the signature with preprocessor options. 2024 const PreprocessorOptions &ppOpts = getPreprocessorOpts(); 2025 const HeaderSearchOptions &hsOpts = getHeaderSearchOpts(); 2026 code = hash_combine(code, ppOpts.UsePredefines, ppOpts.DetailedRecord); 2027 2028 for (std::vector<std::pair<std::string, bool/*isUndef*/>>::const_iterator 2029 I = getPreprocessorOpts().Macros.begin(), 2030 IEnd = getPreprocessorOpts().Macros.end(); 2031 I != IEnd; ++I) { 2032 // If we're supposed to ignore this macro for the purposes of modules, 2033 // don't put it into the hash. 2034 if (!hsOpts.ModulesIgnoreMacros.empty()) { 2035 // Check whether we're ignoring this macro. 2036 StringRef MacroDef = I->first; 2037 if (hsOpts.ModulesIgnoreMacros.count(MacroDef.split('=').first)) 2038 continue; 2039 } 2040 2041 code = hash_combine(code, I->first, I->second); 2042 } 2043 2044 // Extend the signature with the sysroot. 2045 code = hash_combine(code, hsOpts.Sysroot, hsOpts.UseBuiltinIncludes, 2046 hsOpts.UseStandardSystemIncludes, 2047 hsOpts.UseStandardCXXIncludes, 2048 hsOpts.UseLibcxx); 2049 code = hash_combine(code, hsOpts.ResourceDir); 2050 2051 // Extend the signature with the user build path. 2052 code = hash_combine(code, hsOpts.ModuleUserBuildPath); 2053 2054 // Darwin-specific hack: if we have a sysroot, use the contents and 2055 // modification time of 2056 // $sysroot/System/Library/CoreServices/SystemVersion.plist 2057 // as part of the module hash. 2058 if (!hsOpts.Sysroot.empty()) { 2059 SmallString<128> systemVersionFile; 2060 systemVersionFile += hsOpts.Sysroot; 2061 llvm::sys::path::append(systemVersionFile, "System"); 2062 llvm::sys::path::append(systemVersionFile, "Library"); 2063 llvm::sys::path::append(systemVersionFile, "CoreServices"); 2064 llvm::sys::path::append(systemVersionFile, "SystemVersion.plist"); 2065 2066 llvm::ErrorOr<std::unique_ptr<llvm::MemoryBuffer>> buffer = 2067 llvm::MemoryBuffer::getFile(systemVersionFile); 2068 if (buffer) { 2069 code = hash_combine(code, buffer.get()->getBuffer()); 2070 2071 struct stat statBuf; 2072 if (stat(systemVersionFile.c_str(), &statBuf) == 0) 2073 code = hash_combine(code, statBuf.st_mtime); 2074 } 2075 } 2076 2077 return llvm::APInt(64, code).toString(36, /*Signed=*/false); 2078 } 2079 2080 namespace clang { 2081 2082 template<typename IntTy> 2083 static IntTy getLastArgIntValueImpl(const ArgList &Args, OptSpecifier Id, 2084 IntTy Default, 2085 DiagnosticsEngine *Diags) { 2086 IntTy Res = Default; 2087 if (Arg *A = Args.getLastArg(Id)) { 2088 if (StringRef(A->getValue()).getAsInteger(10, Res)) { 2089 if (Diags) 2090 Diags->Report(diag::err_drv_invalid_int_value) << A->getAsString(Args) 2091 << A->getValue(); 2092 } 2093 } 2094 return Res; 2095 } 2096 2097 2098 // Declared in clang/Frontend/Utils.h. 2099 int getLastArgIntValue(const ArgList &Args, OptSpecifier Id, int Default, 2100 DiagnosticsEngine *Diags) { 2101 return getLastArgIntValueImpl<int>(Args, Id, Default, Diags); 2102 } 2103 2104 uint64_t getLastArgUInt64Value(const ArgList &Args, OptSpecifier Id, 2105 uint64_t Default, 2106 DiagnosticsEngine *Diags) { 2107 return getLastArgIntValueImpl<uint64_t>(Args, Id, Default, Diags); 2108 } 2109 2110 void BuryPointer(const void *Ptr) { 2111 // This function may be called only a small fixed amount of times per each 2112 // invocation, otherwise we do actually have a leak which we want to report. 2113 // If this function is called more than kGraveYardMaxSize times, the pointers 2114 // will not be properly buried and a leak detector will report a leak, which 2115 // is what we want in such case. 2116 static const size_t kGraveYardMaxSize = 16; 2117 LLVM_ATTRIBUTE_UNUSED static const void *GraveYard[kGraveYardMaxSize]; 2118 static std::atomic<unsigned> GraveYardSize; 2119 unsigned Idx = GraveYardSize++; 2120 if (Idx >= kGraveYardMaxSize) 2121 return; 2122 GraveYard[Idx] = Ptr; 2123 } 2124 2125 IntrusiveRefCntPtr<vfs::FileSystem> 2126 createVFSFromCompilerInvocation(const CompilerInvocation &CI, 2127 DiagnosticsEngine &Diags) { 2128 if (CI.getHeaderSearchOpts().VFSOverlayFiles.empty()) 2129 return vfs::getRealFileSystem(); 2130 2131 IntrusiveRefCntPtr<vfs::OverlayFileSystem> 2132 Overlay(new vfs::OverlayFileSystem(vfs::getRealFileSystem())); 2133 // earlier vfs files are on the bottom 2134 for (const std::string &File : CI.getHeaderSearchOpts().VFSOverlayFiles) { 2135 llvm::ErrorOr<std::unique_ptr<llvm::MemoryBuffer>> Buffer = 2136 llvm::MemoryBuffer::getFile(File); 2137 if (!Buffer) { 2138 Diags.Report(diag::err_missing_vfs_overlay_file) << File; 2139 return IntrusiveRefCntPtr<vfs::FileSystem>(); 2140 } 2141 2142 IntrusiveRefCntPtr<vfs::FileSystem> FS = 2143 vfs::getVFSFromYAML(std::move(Buffer.get()), /*DiagHandler*/ nullptr); 2144 if (!FS.get()) { 2145 Diags.Report(diag::err_invalid_vfs_overlay) << File; 2146 return IntrusiveRefCntPtr<vfs::FileSystem>(); 2147 } 2148 Overlay->pushOverlay(FS); 2149 } 2150 return Overlay; 2151 } 2152 } // end namespace clang 2153