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