CompilerInvocation.cpp revision 296417
1//===--- CompilerInvocation.cpp -------------------------------------------===// 2// 3// The LLVM Compiler Infrastructure 4// 5// This file is distributed under the University of Illinois Open Source 6// License. See LICENSE.TXT for details. 7// 8//===----------------------------------------------------------------------===// 9 10#include "TestModuleFileExtension.h" 11#include "clang/Basic/Builtins.h" 12#include "clang/Basic/FileManager.h" 13#include "clang/Basic/Version.h" 14#include "clang/Config/config.h" 15#include "clang/Driver/DriverDiagnostic.h" 16#include "clang/Driver/Options.h" 17#include "clang/Driver/Util.h" 18#include "clang/Frontend/CompilerInvocation.h" 19#include "clang/Frontend/FrontendDiagnostic.h" 20#include "clang/Frontend/LangStandard.h" 21#include "clang/Frontend/Utils.h" 22#include "clang/Lex/HeaderSearchOptions.h" 23#include "clang/Serialization/ASTReader.h" 24#include "clang/Serialization/ModuleFileExtension.h" 25#include "llvm/ADT/Hashing.h" 26#include "llvm/ADT/STLExtras.h" 27#include "llvm/ADT/SmallVector.h" 28#include "llvm/ADT/StringExtras.h" 29#include "llvm/ADT/StringSwitch.h" 30#include "llvm/ADT/Triple.h" 31#include "llvm/Linker/Linker.h" 32#include "llvm/Option/Arg.h" 33#include "llvm/Option/ArgList.h" 34#include "llvm/Option/OptTable.h" 35#include "llvm/Option/Option.h" 36#include "llvm/Support/CodeGen.h" 37#include "llvm/Support/ErrorHandling.h" 38#include "llvm/Support/FileSystem.h" 39#include "llvm/Support/Host.h" 40#include "llvm/Support/Path.h" 41#include "llvm/Support/Process.h" 42#include "llvm/Target/TargetOptions.h" 43#include <atomic> 44#include <memory> 45#include <sys/stat.h> 46#include <system_error> 47using namespace clang; 48 49//===----------------------------------------------------------------------===// 50// Initialization. 51//===----------------------------------------------------------------------===// 52 53CompilerInvocationBase::CompilerInvocationBase() 54 : LangOpts(new LangOptions()), TargetOpts(new TargetOptions()), 55 DiagnosticOpts(new DiagnosticOptions()), 56 HeaderSearchOpts(new HeaderSearchOptions()), 57 PreprocessorOpts(new PreprocessorOptions()) {} 58 59CompilerInvocationBase::CompilerInvocationBase(const CompilerInvocationBase &X) 60 : RefCountedBase<CompilerInvocation>(), 61 LangOpts(new LangOptions(*X.getLangOpts())), 62 TargetOpts(new TargetOptions(X.getTargetOpts())), 63 DiagnosticOpts(new DiagnosticOptions(X.getDiagnosticOpts())), 64 HeaderSearchOpts(new HeaderSearchOptions(X.getHeaderSearchOpts())), 65 PreprocessorOpts(new PreprocessorOptions(X.getPreprocessorOpts())) {} 66 67CompilerInvocationBase::~CompilerInvocationBase() {} 68 69//===----------------------------------------------------------------------===// 70// Deserialization (from args) 71//===----------------------------------------------------------------------===// 72 73using namespace clang::driver; 74using namespace clang::driver::options; 75using namespace llvm::opt; 76 77// 78 79static unsigned getOptimizationLevel(ArgList &Args, InputKind IK, 80 DiagnosticsEngine &Diags) { 81 unsigned DefaultOpt = 0; 82 if (IK == IK_OpenCL && !Args.hasArg(OPT_cl_opt_disable)) 83 DefaultOpt = 2; 84 85 if (Arg *A = Args.getLastArg(options::OPT_O_Group)) { 86 if (A->getOption().matches(options::OPT_O0)) 87 return 0; 88 89 if (A->getOption().matches(options::OPT_Ofast)) 90 return 3; 91 92 assert (A->getOption().matches(options::OPT_O)); 93 94 StringRef S(A->getValue()); 95 if (S == "s" || S == "z" || S.empty()) 96 return 2; 97 98 return getLastArgIntValue(Args, OPT_O, DefaultOpt, Diags); 99 } 100 101 return DefaultOpt; 102} 103 104static unsigned getOptimizationLevelSize(ArgList &Args) { 105 if (Arg *A = Args.getLastArg(options::OPT_O_Group)) { 106 if (A->getOption().matches(options::OPT_O)) { 107 switch (A->getValue()[0]) { 108 default: 109 return 0; 110 case 's': 111 return 1; 112 case 'z': 113 return 2; 114 } 115 } 116 } 117 return 0; 118} 119 120static void addDiagnosticArgs(ArgList &Args, OptSpecifier Group, 121 OptSpecifier GroupWithValue, 122 std::vector<std::string> &Diagnostics) { 123 for (Arg *A : Args.filtered(Group)) { 124 if (A->getOption().getKind() == Option::FlagClass) { 125 // The argument is a pure flag (such as OPT_Wall or OPT_Wdeprecated). Add 126 // its name (minus the "W" or "R" at the beginning) to the warning list. 127 Diagnostics.push_back(A->getOption().getName().drop_front(1)); 128 } else if (A->getOption().matches(GroupWithValue)) { 129 // This is -Wfoo= or -Rfoo=, where foo is the name of the diagnostic group. 130 Diagnostics.push_back(A->getOption().getName().drop_front(1).rtrim("=-")); 131 } else { 132 // Otherwise, add its value (for OPT_W_Joined and similar). 133 for (const char *Arg : A->getValues()) 134 Diagnostics.emplace_back(Arg); 135 } 136 } 137} 138 139static void getAllNoBuiltinFuncValues(ArgList &Args, 140 std::vector<std::string> &Funcs) { 141 SmallVector<const char *, 8> Values; 142 for (const auto &Arg : Args) { 143 const Option &O = Arg->getOption(); 144 if (O.matches(options::OPT_fno_builtin_)) { 145 const char *FuncName = Arg->getValue(); 146 if (Builtin::Context::isBuiltinFunc(FuncName)) 147 Values.push_back(FuncName); 148 } 149 } 150 Funcs.insert(Funcs.end(), Values.begin(), Values.end()); 151} 152 153static bool ParseAnalyzerArgs(AnalyzerOptions &Opts, ArgList &Args, 154 DiagnosticsEngine &Diags) { 155 using namespace options; 156 bool Success = true; 157 if (Arg *A = Args.getLastArg(OPT_analyzer_store)) { 158 StringRef Name = A->getValue(); 159 AnalysisStores Value = llvm::StringSwitch<AnalysisStores>(Name) 160#define ANALYSIS_STORE(NAME, CMDFLAG, DESC, CREATFN) \ 161 .Case(CMDFLAG, NAME##Model) 162#include "clang/StaticAnalyzer/Core/Analyses.def" 163 .Default(NumStores); 164 if (Value == NumStores) { 165 Diags.Report(diag::err_drv_invalid_value) 166 << A->getAsString(Args) << Name; 167 Success = false; 168 } else { 169 Opts.AnalysisStoreOpt = Value; 170 } 171 } 172 173 if (Arg *A = Args.getLastArg(OPT_analyzer_constraints)) { 174 StringRef Name = A->getValue(); 175 AnalysisConstraints Value = llvm::StringSwitch<AnalysisConstraints>(Name) 176#define ANALYSIS_CONSTRAINTS(NAME, CMDFLAG, DESC, CREATFN) \ 177 .Case(CMDFLAG, NAME##Model) 178#include "clang/StaticAnalyzer/Core/Analyses.def" 179 .Default(NumConstraints); 180 if (Value == NumConstraints) { 181 Diags.Report(diag::err_drv_invalid_value) 182 << A->getAsString(Args) << Name; 183 Success = false; 184 } else { 185 Opts.AnalysisConstraintsOpt = Value; 186 } 187 } 188 189 if (Arg *A = Args.getLastArg(OPT_analyzer_output)) { 190 StringRef Name = A->getValue(); 191 AnalysisDiagClients Value = llvm::StringSwitch<AnalysisDiagClients>(Name) 192#define ANALYSIS_DIAGNOSTICS(NAME, CMDFLAG, DESC, CREATFN) \ 193 .Case(CMDFLAG, PD_##NAME) 194#include "clang/StaticAnalyzer/Core/Analyses.def" 195 .Default(NUM_ANALYSIS_DIAG_CLIENTS); 196 if (Value == NUM_ANALYSIS_DIAG_CLIENTS) { 197 Diags.Report(diag::err_drv_invalid_value) 198 << A->getAsString(Args) << Name; 199 Success = false; 200 } else { 201 Opts.AnalysisDiagOpt = Value; 202 } 203 } 204 205 if (Arg *A = Args.getLastArg(OPT_analyzer_purge)) { 206 StringRef Name = A->getValue(); 207 AnalysisPurgeMode Value = llvm::StringSwitch<AnalysisPurgeMode>(Name) 208#define ANALYSIS_PURGE(NAME, CMDFLAG, DESC) \ 209 .Case(CMDFLAG, NAME) 210#include "clang/StaticAnalyzer/Core/Analyses.def" 211 .Default(NumPurgeModes); 212 if (Value == NumPurgeModes) { 213 Diags.Report(diag::err_drv_invalid_value) 214 << A->getAsString(Args) << Name; 215 Success = false; 216 } else { 217 Opts.AnalysisPurgeOpt = Value; 218 } 219 } 220 221 if (Arg *A = Args.getLastArg(OPT_analyzer_inlining_mode)) { 222 StringRef Name = A->getValue(); 223 AnalysisInliningMode Value = llvm::StringSwitch<AnalysisInliningMode>(Name) 224#define ANALYSIS_INLINING_MODE(NAME, CMDFLAG, DESC) \ 225 .Case(CMDFLAG, NAME) 226#include "clang/StaticAnalyzer/Core/Analyses.def" 227 .Default(NumInliningModes); 228 if (Value == NumInliningModes) { 229 Diags.Report(diag::err_drv_invalid_value) 230 << A->getAsString(Args) << Name; 231 Success = false; 232 } else { 233 Opts.InliningMode = Value; 234 } 235 } 236 237 Opts.ShowCheckerHelp = Args.hasArg(OPT_analyzer_checker_help); 238 Opts.DisableAllChecks = Args.hasArg(OPT_analyzer_disable_all_checks); 239 240 Opts.visualizeExplodedGraphWithGraphViz = 241 Args.hasArg(OPT_analyzer_viz_egraph_graphviz); 242 Opts.visualizeExplodedGraphWithUbiGraph = 243 Args.hasArg(OPT_analyzer_viz_egraph_ubigraph); 244 Opts.NoRetryExhausted = Args.hasArg(OPT_analyzer_disable_retry_exhausted); 245 Opts.AnalyzeAll = Args.hasArg(OPT_analyzer_opt_analyze_headers); 246 Opts.AnalyzerDisplayProgress = Args.hasArg(OPT_analyzer_display_progress); 247 Opts.AnalyzeNestedBlocks = 248 Args.hasArg(OPT_analyzer_opt_analyze_nested_blocks); 249 Opts.eagerlyAssumeBinOpBifurcation = Args.hasArg(OPT_analyzer_eagerly_assume); 250 Opts.AnalyzeSpecificFunction = Args.getLastArgValue(OPT_analyze_function); 251 Opts.UnoptimizedCFG = Args.hasArg(OPT_analysis_UnoptimizedCFG); 252 Opts.TrimGraph = Args.hasArg(OPT_trim_egraph); 253 Opts.maxBlockVisitOnPath = 254 getLastArgIntValue(Args, OPT_analyzer_max_loop, 4, Diags); 255 Opts.PrintStats = Args.hasArg(OPT_analyzer_stats); 256 Opts.InlineMaxStackDepth = 257 getLastArgIntValue(Args, OPT_analyzer_inline_max_stack_depth, 258 Opts.InlineMaxStackDepth, Diags); 259 260 Opts.CheckersControlList.clear(); 261 for (const Arg *A : 262 Args.filtered(OPT_analyzer_checker, OPT_analyzer_disable_checker)) { 263 A->claim(); 264 bool enable = (A->getOption().getID() == OPT_analyzer_checker); 265 // We can have a list of comma separated checker names, e.g: 266 // '-analyzer-checker=cocoa,unix' 267 StringRef checkerList = A->getValue(); 268 SmallVector<StringRef, 4> checkers; 269 checkerList.split(checkers, ","); 270 for (StringRef checker : checkers) 271 Opts.CheckersControlList.emplace_back(checker, enable); 272 } 273 274 // Go through the analyzer configuration options. 275 for (const Arg *A : Args.filtered(OPT_analyzer_config)) { 276 A->claim(); 277 // We can have a list of comma separated config names, e.g: 278 // '-analyzer-config key1=val1,key2=val2' 279 StringRef configList = A->getValue(); 280 SmallVector<StringRef, 4> configVals; 281 configList.split(configVals, ","); 282 for (unsigned i = 0, e = configVals.size(); i != e; ++i) { 283 StringRef key, val; 284 std::tie(key, val) = configVals[i].split("="); 285 if (val.empty()) { 286 Diags.Report(SourceLocation(), 287 diag::err_analyzer_config_no_value) << configVals[i]; 288 Success = false; 289 break; 290 } 291 if (val.find('=') != StringRef::npos) { 292 Diags.Report(SourceLocation(), 293 diag::err_analyzer_config_multiple_values) 294 << configVals[i]; 295 Success = false; 296 break; 297 } 298 Opts.Config[key] = val; 299 } 300 } 301 302 return Success; 303} 304 305static bool ParseMigratorArgs(MigratorOptions &Opts, ArgList &Args) { 306 Opts.NoNSAllocReallocError = Args.hasArg(OPT_migrator_no_nsalloc_error); 307 Opts.NoFinalizeRemoval = Args.hasArg(OPT_migrator_no_finalize_removal); 308 return true; 309} 310 311static void ParseCommentArgs(CommentOptions &Opts, ArgList &Args) { 312 Opts.BlockCommandNames = Args.getAllArgValues(OPT_fcomment_block_commands); 313 Opts.ParseAllComments = Args.hasArg(OPT_fparse_all_comments); 314} 315 316static StringRef getCodeModel(ArgList &Args, DiagnosticsEngine &Diags) { 317 if (Arg *A = Args.getLastArg(OPT_mcode_model)) { 318 StringRef Value = A->getValue(); 319 if (Value == "small" || Value == "kernel" || Value == "medium" || 320 Value == "large") 321 return Value; 322 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Value; 323 } 324 return "default"; 325} 326 327/// \brief Create a new Regex instance out of the string value in \p RpassArg. 328/// It returns a pointer to the newly generated Regex instance. 329static std::shared_ptr<llvm::Regex> 330GenerateOptimizationRemarkRegex(DiagnosticsEngine &Diags, ArgList &Args, 331 Arg *RpassArg) { 332 StringRef Val = RpassArg->getValue(); 333 std::string RegexError; 334 std::shared_ptr<llvm::Regex> Pattern = std::make_shared<llvm::Regex>(Val); 335 if (!Pattern->isValid(RegexError)) { 336 Diags.Report(diag::err_drv_optimization_remark_pattern) 337 << RegexError << RpassArg->getAsString(Args); 338 Pattern.reset(); 339 } 340 return Pattern; 341} 342 343static bool parseDiagnosticLevelMask(StringRef FlagName, 344 const std::vector<std::string> &Levels, 345 DiagnosticsEngine *Diags, 346 DiagnosticLevelMask &M) { 347 bool Success = true; 348 for (const auto &Level : Levels) { 349 DiagnosticLevelMask const PM = 350 llvm::StringSwitch<DiagnosticLevelMask>(Level) 351 .Case("note", DiagnosticLevelMask::Note) 352 .Case("remark", DiagnosticLevelMask::Remark) 353 .Case("warning", DiagnosticLevelMask::Warning) 354 .Case("error", DiagnosticLevelMask::Error) 355 .Default(DiagnosticLevelMask::None); 356 if (PM == DiagnosticLevelMask::None) { 357 Success = false; 358 if (Diags) 359 Diags->Report(diag::err_drv_invalid_value) << FlagName << Level; 360 } 361 M = M | PM; 362 } 363 return Success; 364} 365 366static void parseSanitizerKinds(StringRef FlagName, 367 const std::vector<std::string> &Sanitizers, 368 DiagnosticsEngine &Diags, SanitizerSet &S) { 369 for (const auto &Sanitizer : Sanitizers) { 370 SanitizerMask K = parseSanitizerValue(Sanitizer, /*AllowGroups=*/false); 371 if (K == 0) 372 Diags.Report(diag::err_drv_invalid_value) << FlagName << Sanitizer; 373 else 374 S.set(K, true); 375 } 376} 377 378static bool ParseCodeGenArgs(CodeGenOptions &Opts, ArgList &Args, InputKind IK, 379 DiagnosticsEngine &Diags, 380 const TargetOptions &TargetOpts) { 381 using namespace options; 382 bool Success = true; 383 llvm::Triple Triple = llvm::Triple(TargetOpts.Triple); 384 385 unsigned OptimizationLevel = getOptimizationLevel(Args, IK, Diags); 386 // TODO: This could be done in Driver 387 unsigned MaxOptLevel = 3; 388 if (OptimizationLevel > MaxOptLevel) { 389 // If the optimization level is not supported, fall back on the default 390 // optimization 391 Diags.Report(diag::warn_drv_optimization_value) 392 << Args.getLastArg(OPT_O)->getAsString(Args) << "-O" << MaxOptLevel; 393 OptimizationLevel = MaxOptLevel; 394 } 395 Opts.OptimizationLevel = OptimizationLevel; 396 397 // We must always run at least the always inlining pass. 398 Opts.setInlining( 399 (Opts.OptimizationLevel > 1) ? CodeGenOptions::NormalInlining 400 : CodeGenOptions::OnlyAlwaysInlining); 401 // -fno-inline-functions overrides OptimizationLevel > 1. 402 Opts.NoInline = Args.hasArg(OPT_fno_inline); 403 Opts.setInlining(Args.hasArg(OPT_fno_inline_functions) ? 404 CodeGenOptions::OnlyAlwaysInlining : Opts.getInlining()); 405 406 if (Arg *A = Args.getLastArg(OPT_fveclib)) { 407 StringRef Name = A->getValue(); 408 if (Name == "Accelerate") 409 Opts.setVecLib(CodeGenOptions::Accelerate); 410 else if (Name == "none") 411 Opts.setVecLib(CodeGenOptions::NoLibrary); 412 else 413 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Name; 414 } 415 416 if (Arg *A = Args.getLastArg(OPT_debug_info_kind_EQ)) { 417 unsigned Val = 418 llvm::StringSwitch<unsigned>(A->getValue()) 419 .Case("line-tables-only", CodeGenOptions::DebugLineTablesOnly) 420 .Case("limited", CodeGenOptions::LimitedDebugInfo) 421 .Case("standalone", CodeGenOptions::FullDebugInfo) 422 .Default(~0U); 423 if (Val == ~0U) 424 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) 425 << A->getValue(); 426 else 427 Opts.setDebugInfo(static_cast<CodeGenOptions::DebugInfoKind>(Val)); 428 } 429 if (Arg *A = Args.getLastArg(OPT_debugger_tuning_EQ)) { 430 unsigned Val = llvm::StringSwitch<unsigned>(A->getValue()) 431 .Case("gdb", CodeGenOptions::DebuggerKindGDB) 432 .Case("lldb", CodeGenOptions::DebuggerKindLLDB) 433 .Case("sce", CodeGenOptions::DebuggerKindSCE) 434 .Default(~0U); 435 if (Val == ~0U) 436 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) 437 << A->getValue(); 438 else 439 Opts.setDebuggerTuning(static_cast<CodeGenOptions::DebuggerKind>(Val)); 440 } 441 Opts.DwarfVersion = getLastArgIntValue(Args, OPT_dwarf_version_EQ, 0, Diags); 442 Opts.DebugColumnInfo = Args.hasArg(OPT_dwarf_column_info); 443 Opts.EmitCodeView = Args.hasArg(OPT_gcodeview); 444 Opts.SplitDwarfFile = Args.getLastArgValue(OPT_split_dwarf_file); 445 Opts.DebugTypeExtRefs = Args.hasArg(OPT_dwarf_ext_refs); 446 Opts.DebugExplicitImport = Triple.isPS4CPU(); 447 448 for (const auto &Arg : Args.getAllArgValues(OPT_fdebug_prefix_map_EQ)) 449 Opts.DebugPrefixMap.insert(StringRef(Arg).split('=')); 450 451 if (const Arg *A = 452 Args.getLastArg(OPT_emit_llvm_uselists, OPT_no_emit_llvm_uselists)) 453 Opts.EmitLLVMUseLists = A->getOption().getID() == OPT_emit_llvm_uselists; 454 455 Opts.DisableLLVMOpts = Args.hasArg(OPT_disable_llvm_optzns); 456 Opts.DisableLLVMPasses = Args.hasArg(OPT_disable_llvm_passes); 457 Opts.DisableRedZone = Args.hasArg(OPT_disable_red_zone); 458 Opts.ForbidGuardVariables = Args.hasArg(OPT_fforbid_guard_variables); 459 Opts.UseRegisterSizedBitfieldAccess = Args.hasArg( 460 OPT_fuse_register_sized_bitfield_access); 461 Opts.RelaxedAliasing = Args.hasArg(OPT_relaxed_aliasing); 462 Opts.StructPathTBAA = !Args.hasArg(OPT_no_struct_path_tbaa); 463 Opts.DwarfDebugFlags = Args.getLastArgValue(OPT_dwarf_debug_flags); 464 Opts.MergeAllConstants = !Args.hasArg(OPT_fno_merge_all_constants); 465 Opts.NoCommon = Args.hasArg(OPT_fno_common); 466 Opts.NoImplicitFloat = Args.hasArg(OPT_no_implicit_float); 467 Opts.OptimizeSize = getOptimizationLevelSize(Args); 468 Opts.SimplifyLibCalls = !(Args.hasArg(OPT_fno_builtin) || 469 Args.hasArg(OPT_ffreestanding)); 470 if (Opts.SimplifyLibCalls) 471 getAllNoBuiltinFuncValues(Args, Opts.NoBuiltinFuncs); 472 Opts.UnrollLoops = 473 Args.hasFlag(OPT_funroll_loops, OPT_fno_unroll_loops, 474 (Opts.OptimizationLevel > 1 && !Opts.OptimizeSize)); 475 Opts.RerollLoops = Args.hasArg(OPT_freroll_loops); 476 477 Opts.DisableIntegratedAS = Args.hasArg(OPT_fno_integrated_as); 478 Opts.Autolink = !Args.hasArg(OPT_fno_autolink); 479 Opts.SampleProfileFile = Args.getLastArgValue(OPT_fprofile_sample_use_EQ); 480 Opts.ProfileInstrGenerate = Args.hasArg(OPT_fprofile_instr_generate) || 481 Args.hasArg(OPT_fprofile_instr_generate_EQ); 482 Opts.InstrProfileOutput = Args.getLastArgValue(OPT_fprofile_instr_generate_EQ); 483 Opts.InstrProfileInput = Args.getLastArgValue(OPT_fprofile_instr_use_EQ); 484 Opts.CoverageMapping = 485 Args.hasFlag(OPT_fcoverage_mapping, OPT_fno_coverage_mapping, false); 486 Opts.DumpCoverageMapping = Args.hasArg(OPT_dump_coverage_mapping); 487 Opts.AsmVerbose = Args.hasArg(OPT_masm_verbose); 488 Opts.ObjCAutoRefCountExceptions = Args.hasArg(OPT_fobjc_arc_exceptions); 489 Opts.CXAAtExit = !Args.hasArg(OPT_fno_use_cxa_atexit); 490 Opts.CXXCtorDtorAliases = Args.hasArg(OPT_mconstructor_aliases); 491 Opts.CodeModel = getCodeModel(Args, Diags); 492 Opts.DebugPass = Args.getLastArgValue(OPT_mdebug_pass); 493 Opts.DisableFPElim = 494 (Args.hasArg(OPT_mdisable_fp_elim) || Args.hasArg(OPT_pg)); 495 Opts.DisableFree = Args.hasArg(OPT_disable_free); 496 Opts.DisableTailCalls = Args.hasArg(OPT_mdisable_tail_calls); 497 Opts.FloatABI = Args.getLastArgValue(OPT_mfloat_abi); 498 if (Arg *A = Args.getLastArg(OPT_meabi)) { 499 StringRef Value = A->getValue(); 500 llvm::EABI EABIVersion = llvm::StringSwitch<llvm::EABI>(Value) 501 .Case("default", llvm::EABI::Default) 502 .Case("4", llvm::EABI::EABI4) 503 .Case("5", llvm::EABI::EABI5) 504 .Case("gnu", llvm::EABI::GNU) 505 .Default(llvm::EABI::Unknown); 506 if (EABIVersion == llvm::EABI::Unknown) 507 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) 508 << Value; 509 else 510 Opts.EABIVersion = Value; 511 } 512 Opts.LessPreciseFPMAD = Args.hasArg(OPT_cl_mad_enable); 513 Opts.LimitFloatPrecision = Args.getLastArgValue(OPT_mlimit_float_precision); 514 Opts.NoInfsFPMath = (Args.hasArg(OPT_menable_no_infinities) || 515 Args.hasArg(OPT_cl_finite_math_only) || 516 Args.hasArg(OPT_cl_fast_relaxed_math)); 517 Opts.NoNaNsFPMath = (Args.hasArg(OPT_menable_no_nans) || 518 Args.hasArg(OPT_cl_unsafe_math_optimizations) || 519 Args.hasArg(OPT_cl_finite_math_only) || 520 Args.hasArg(OPT_cl_fast_relaxed_math)); 521 Opts.NoSignedZeros = Args.hasArg(OPT_fno_signed_zeros); 522 Opts.ReciprocalMath = Args.hasArg(OPT_freciprocal_math); 523 Opts.NoZeroInitializedInBSS = Args.hasArg(OPT_mno_zero_initialized_in_bss); 524 Opts.BackendOptions = Args.getAllArgValues(OPT_backend_option); 525 Opts.NumRegisterParameters = getLastArgIntValue(Args, OPT_mregparm, 0, Diags); 526 Opts.NoExecStack = Args.hasArg(OPT_mno_exec_stack); 527 Opts.FatalWarnings = Args.hasArg(OPT_massembler_fatal_warnings); 528 Opts.EnableSegmentedStacks = Args.hasArg(OPT_split_stacks); 529 Opts.RelaxAll = Args.hasArg(OPT_mrelax_all); 530 Opts.IncrementalLinkerCompatible = 531 Args.hasArg(OPT_mincremental_linker_compatible); 532 Opts.OmitLeafFramePointer = Args.hasArg(OPT_momit_leaf_frame_pointer); 533 Opts.SaveTempLabels = Args.hasArg(OPT_msave_temp_labels); 534 Opts.NoDwarfDirectoryAsm = Args.hasArg(OPT_fno_dwarf_directory_asm); 535 Opts.SoftFloat = Args.hasArg(OPT_msoft_float); 536 Opts.StrictEnums = Args.hasArg(OPT_fstrict_enums); 537 Opts.StrictVTablePointers = Args.hasArg(OPT_fstrict_vtable_pointers); 538 Opts.UnsafeFPMath = Args.hasArg(OPT_menable_unsafe_fp_math) || 539 Args.hasArg(OPT_cl_unsafe_math_optimizations) || 540 Args.hasArg(OPT_cl_fast_relaxed_math); 541 Opts.UnwindTables = Args.hasArg(OPT_munwind_tables); 542 Opts.RelocationModel = Args.getLastArgValue(OPT_mrelocation_model, "pic"); 543 Opts.ThreadModel = Args.getLastArgValue(OPT_mthread_model, "posix"); 544 if (Opts.ThreadModel != "posix" && Opts.ThreadModel != "single") 545 Diags.Report(diag::err_drv_invalid_value) 546 << Args.getLastArg(OPT_mthread_model)->getAsString(Args) 547 << Opts.ThreadModel; 548 Opts.TrapFuncName = Args.getLastArgValue(OPT_ftrap_function_EQ); 549 Opts.UseInitArray = Args.hasArg(OPT_fuse_init_array); 550 551 Opts.FunctionSections = Args.hasFlag(OPT_ffunction_sections, 552 OPT_fno_function_sections, false); 553 Opts.DataSections = Args.hasFlag(OPT_fdata_sections, 554 OPT_fno_data_sections, false); 555 Opts.UniqueSectionNames = Args.hasFlag(OPT_funique_section_names, 556 OPT_fno_unique_section_names, true); 557 558 Opts.MergeFunctions = Args.hasArg(OPT_fmerge_functions); 559 560 Opts.PrepareForLTO = Args.hasArg(OPT_flto, OPT_flto_EQ); 561 const Arg *A = Args.getLastArg(OPT_flto, OPT_flto_EQ); 562 Opts.EmitFunctionSummary = A && A->containsValue("thin"); 563 if (Arg *A = Args.getLastArg(OPT_fthinlto_index_EQ)) { 564 if (IK != IK_LLVM_IR) 565 Diags.Report(diag::err_drv_argument_only_allowed_with) 566 << A->getAsString(Args) << "-x ir"; 567 Opts.ThinLTOIndexFile = Args.getLastArgValue(OPT_fthinlto_index_EQ); 568 } 569 570 Opts.MSVolatile = Args.hasArg(OPT_fms_volatile); 571 572 Opts.VectorizeBB = Args.hasArg(OPT_vectorize_slp_aggressive); 573 Opts.VectorizeLoop = Args.hasArg(OPT_vectorize_loops); 574 Opts.VectorizeSLP = Args.hasArg(OPT_vectorize_slp); 575 576 Opts.MainFileName = Args.getLastArgValue(OPT_main_file_name); 577 Opts.VerifyModule = !Args.hasArg(OPT_disable_llvm_verifier); 578 579 Opts.DisableGCov = Args.hasArg(OPT_test_coverage); 580 Opts.EmitGcovArcs = Args.hasArg(OPT_femit_coverage_data); 581 Opts.EmitGcovNotes = Args.hasArg(OPT_femit_coverage_notes); 582 if (Opts.EmitGcovArcs || Opts.EmitGcovNotes) { 583 Opts.CoverageFile = Args.getLastArgValue(OPT_coverage_file); 584 Opts.CoverageExtraChecksum = Args.hasArg(OPT_coverage_cfg_checksum); 585 Opts.CoverageNoFunctionNamesInData = 586 Args.hasArg(OPT_coverage_no_function_names_in_data); 587 Opts.CoverageExitBlockBeforeBody = 588 Args.hasArg(OPT_coverage_exit_block_before_body); 589 if (Args.hasArg(OPT_coverage_version_EQ)) { 590 StringRef CoverageVersion = Args.getLastArgValue(OPT_coverage_version_EQ); 591 if (CoverageVersion.size() != 4) { 592 Diags.Report(diag::err_drv_invalid_value) 593 << Args.getLastArg(OPT_coverage_version_EQ)->getAsString(Args) 594 << CoverageVersion; 595 } else { 596 memcpy(Opts.CoverageVersion, CoverageVersion.data(), 4); 597 } 598 } 599 } 600 601 Opts.InstrumentFunctions = Args.hasArg(OPT_finstrument_functions); 602 Opts.InstrumentForProfiling = Args.hasArg(OPT_pg); 603 Opts.EmitOpenCLArgMetadata = Args.hasArg(OPT_cl_kernel_arg_info); 604 Opts.CompressDebugSections = Args.hasArg(OPT_compress_debug_sections); 605 Opts.DebugCompilationDir = Args.getLastArgValue(OPT_fdebug_compilation_dir); 606 for (auto A : Args.filtered(OPT_mlink_bitcode_file, OPT_mlink_cuda_bitcode)) { 607 unsigned LinkFlags = llvm::Linker::Flags::None; 608 if (A->getOption().matches(OPT_mlink_cuda_bitcode)) 609 LinkFlags = llvm::Linker::Flags::LinkOnlyNeeded | 610 llvm::Linker::Flags::InternalizeLinkedSymbols; 611 Opts.LinkBitcodeFiles.push_back(std::make_pair(LinkFlags, A->getValue())); 612 } 613 Opts.SanitizeCoverageType = 614 getLastArgIntValue(Args, OPT_fsanitize_coverage_type, 0, Diags); 615 Opts.SanitizeCoverageIndirectCalls = 616 Args.hasArg(OPT_fsanitize_coverage_indirect_calls); 617 Opts.SanitizeCoverageTraceBB = Args.hasArg(OPT_fsanitize_coverage_trace_bb); 618 Opts.SanitizeCoverageTraceCmp = Args.hasArg(OPT_fsanitize_coverage_trace_cmp); 619 Opts.SanitizeCoverage8bitCounters = 620 Args.hasArg(OPT_fsanitize_coverage_8bit_counters); 621 Opts.SanitizeMemoryTrackOrigins = 622 getLastArgIntValue(Args, OPT_fsanitize_memory_track_origins_EQ, 0, Diags); 623 Opts.SanitizeMemoryUseAfterDtor = 624 Args.hasArg(OPT_fsanitize_memory_use_after_dtor); 625 Opts.SanitizeCfiCrossDso = Args.hasArg(OPT_fsanitize_cfi_cross_dso); 626 Opts.SSPBufferSize = 627 getLastArgIntValue(Args, OPT_stack_protector_buffer_size, 8, Diags); 628 Opts.StackRealignment = Args.hasArg(OPT_mstackrealign); 629 if (Arg *A = Args.getLastArg(OPT_mstack_alignment)) { 630 StringRef Val = A->getValue(); 631 unsigned StackAlignment = Opts.StackAlignment; 632 Val.getAsInteger(10, StackAlignment); 633 Opts.StackAlignment = StackAlignment; 634 } 635 636 if (Arg *A = Args.getLastArg(OPT_mstack_probe_size)) { 637 StringRef Val = A->getValue(); 638 unsigned StackProbeSize = Opts.StackProbeSize; 639 Val.getAsInteger(0, StackProbeSize); 640 Opts.StackProbeSize = StackProbeSize; 641 } 642 643 if (Arg *A = Args.getLastArg(OPT_fobjc_dispatch_method_EQ)) { 644 StringRef Name = A->getValue(); 645 unsigned Method = llvm::StringSwitch<unsigned>(Name) 646 .Case("legacy", CodeGenOptions::Legacy) 647 .Case("non-legacy", CodeGenOptions::NonLegacy) 648 .Case("mixed", CodeGenOptions::Mixed) 649 .Default(~0U); 650 if (Method == ~0U) { 651 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Name; 652 Success = false; 653 } else { 654 Opts.setObjCDispatchMethod( 655 static_cast<CodeGenOptions::ObjCDispatchMethodKind>(Method)); 656 } 657 } 658 659 Opts.EmulatedTLS = 660 Args.hasFlag(OPT_femulated_tls, OPT_fno_emulated_tls, false); 661 662 if (Arg *A = Args.getLastArg(OPT_ftlsmodel_EQ)) { 663 StringRef Name = A->getValue(); 664 unsigned Model = llvm::StringSwitch<unsigned>(Name) 665 .Case("global-dynamic", CodeGenOptions::GeneralDynamicTLSModel) 666 .Case("local-dynamic", CodeGenOptions::LocalDynamicTLSModel) 667 .Case("initial-exec", CodeGenOptions::InitialExecTLSModel) 668 .Case("local-exec", CodeGenOptions::LocalExecTLSModel) 669 .Default(~0U); 670 if (Model == ~0U) { 671 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Name; 672 Success = false; 673 } else { 674 Opts.setDefaultTLSModel(static_cast<CodeGenOptions::TLSModel>(Model)); 675 } 676 } 677 678 if (Arg *A = Args.getLastArg(OPT_ffp_contract)) { 679 StringRef Val = A->getValue(); 680 if (Val == "fast") 681 Opts.setFPContractMode(CodeGenOptions::FPC_Fast); 682 else if (Val == "on") 683 Opts.setFPContractMode(CodeGenOptions::FPC_On); 684 else if (Val == "off") 685 Opts.setFPContractMode(CodeGenOptions::FPC_Off); 686 else 687 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Val; 688 } 689 690 if (Arg *A = Args.getLastArg(OPT_fpcc_struct_return, OPT_freg_struct_return)) { 691 if (A->getOption().matches(OPT_fpcc_struct_return)) { 692 Opts.setStructReturnConvention(CodeGenOptions::SRCK_OnStack); 693 } else { 694 assert(A->getOption().matches(OPT_freg_struct_return)); 695 Opts.setStructReturnConvention(CodeGenOptions::SRCK_InRegs); 696 } 697 } 698 699 Opts.DependentLibraries = Args.getAllArgValues(OPT_dependent_lib); 700 bool NeedLocTracking = false; 701 702 if (Arg *A = Args.getLastArg(OPT_Rpass_EQ)) { 703 Opts.OptimizationRemarkPattern = 704 GenerateOptimizationRemarkRegex(Diags, Args, A); 705 NeedLocTracking = true; 706 } 707 708 if (Arg *A = Args.getLastArg(OPT_Rpass_missed_EQ)) { 709 Opts.OptimizationRemarkMissedPattern = 710 GenerateOptimizationRemarkRegex(Diags, Args, A); 711 NeedLocTracking = true; 712 } 713 714 if (Arg *A = Args.getLastArg(OPT_Rpass_analysis_EQ)) { 715 Opts.OptimizationRemarkAnalysisPattern = 716 GenerateOptimizationRemarkRegex(Diags, Args, A); 717 NeedLocTracking = true; 718 } 719 720 // If the user requested to use a sample profile for PGO, then the 721 // backend will need to track source location information so the profile 722 // can be incorporated into the IR. 723 if (!Opts.SampleProfileFile.empty()) 724 NeedLocTracking = true; 725 726 // If the user requested a flag that requires source locations available in 727 // the backend, make sure that the backend tracks source location information. 728 if (NeedLocTracking && Opts.getDebugInfo() == CodeGenOptions::NoDebugInfo) 729 Opts.setDebugInfo(CodeGenOptions::LocTrackingOnly); 730 731 Opts.RewriteMapFiles = Args.getAllArgValues(OPT_frewrite_map_file); 732 733 // Parse -fsanitize-recover= arguments. 734 // FIXME: Report unrecoverable sanitizers incorrectly specified here. 735 parseSanitizerKinds("-fsanitize-recover=", 736 Args.getAllArgValues(OPT_fsanitize_recover_EQ), Diags, 737 Opts.SanitizeRecover); 738 parseSanitizerKinds("-fsanitize-trap=", 739 Args.getAllArgValues(OPT_fsanitize_trap_EQ), Diags, 740 Opts.SanitizeTrap); 741 742 Opts.CudaGpuBinaryFileNames = 743 Args.getAllArgValues(OPT_fcuda_include_gpubinary); 744 745 return Success; 746} 747 748static void ParseDependencyOutputArgs(DependencyOutputOptions &Opts, 749 ArgList &Args) { 750 using namespace options; 751 Opts.OutputFile = Args.getLastArgValue(OPT_dependency_file); 752 Opts.Targets = Args.getAllArgValues(OPT_MT); 753 Opts.IncludeSystemHeaders = Args.hasArg(OPT_sys_header_deps); 754 Opts.IncludeModuleFiles = Args.hasArg(OPT_module_file_deps); 755 Opts.UsePhonyTargets = Args.hasArg(OPT_MP); 756 Opts.ShowHeaderIncludes = Args.hasArg(OPT_H); 757 Opts.HeaderIncludeOutputFile = Args.getLastArgValue(OPT_header_include_file); 758 Opts.AddMissingHeaderDeps = Args.hasArg(OPT_MG); 759 Opts.PrintShowIncludes = Args.hasArg(OPT_show_includes); 760 Opts.DOTOutputFile = Args.getLastArgValue(OPT_dependency_dot); 761 Opts.ModuleDependencyOutputDir = 762 Args.getLastArgValue(OPT_module_dependency_dir); 763 if (Args.hasArg(OPT_MV)) 764 Opts.OutputFormat = DependencyOutputFormat::NMake; 765 // Add sanitizer blacklists as extra dependencies. 766 // They won't be discovered by the regular preprocessor, so 767 // we let make / ninja to know about this implicit dependency. 768 Opts.ExtraDeps = Args.getAllArgValues(OPT_fdepfile_entry); 769 auto ModuleFiles = Args.getAllArgValues(OPT_fmodule_file); 770 Opts.ExtraDeps.insert(Opts.ExtraDeps.end(), ModuleFiles.begin(), 771 ModuleFiles.end()); 772} 773 774bool clang::ParseDiagnosticArgs(DiagnosticOptions &Opts, ArgList &Args, 775 DiagnosticsEngine *Diags) { 776 using namespace options; 777 bool Success = true; 778 779 Opts.DiagnosticLogFile = Args.getLastArgValue(OPT_diagnostic_log_file); 780 if (Arg *A = 781 Args.getLastArg(OPT_diagnostic_serialized_file, OPT__serialize_diags)) 782 Opts.DiagnosticSerializationFile = A->getValue(); 783 Opts.IgnoreWarnings = Args.hasArg(OPT_w); 784 Opts.NoRewriteMacros = Args.hasArg(OPT_Wno_rewrite_macros); 785 Opts.Pedantic = Args.hasArg(OPT_pedantic); 786 Opts.PedanticErrors = Args.hasArg(OPT_pedantic_errors); 787 Opts.ShowCarets = !Args.hasArg(OPT_fno_caret_diagnostics); 788 Opts.ShowColors = Args.hasArg(OPT_fcolor_diagnostics); 789 Opts.ShowColumn = Args.hasFlag(OPT_fshow_column, 790 OPT_fno_show_column, 791 /*Default=*/true); 792 Opts.ShowFixits = !Args.hasArg(OPT_fno_diagnostics_fixit_info); 793 Opts.ShowLocation = !Args.hasArg(OPT_fno_show_source_location); 794 Opts.ShowOptionNames = Args.hasArg(OPT_fdiagnostics_show_option); 795 796 llvm::sys::Process::UseANSIEscapeCodes(Args.hasArg(OPT_fansi_escape_codes)); 797 798 // Default behavior is to not to show note include stacks. 799 Opts.ShowNoteIncludeStack = false; 800 if (Arg *A = Args.getLastArg(OPT_fdiagnostics_show_note_include_stack, 801 OPT_fno_diagnostics_show_note_include_stack)) 802 if (A->getOption().matches(OPT_fdiagnostics_show_note_include_stack)) 803 Opts.ShowNoteIncludeStack = true; 804 805 StringRef ShowOverloads = 806 Args.getLastArgValue(OPT_fshow_overloads_EQ, "all"); 807 if (ShowOverloads == "best") 808 Opts.setShowOverloads(Ovl_Best); 809 else if (ShowOverloads == "all") 810 Opts.setShowOverloads(Ovl_All); 811 else { 812 Success = false; 813 if (Diags) 814 Diags->Report(diag::err_drv_invalid_value) 815 << Args.getLastArg(OPT_fshow_overloads_EQ)->getAsString(Args) 816 << ShowOverloads; 817 } 818 819 StringRef ShowCategory = 820 Args.getLastArgValue(OPT_fdiagnostics_show_category, "none"); 821 if (ShowCategory == "none") 822 Opts.ShowCategories = 0; 823 else if (ShowCategory == "id") 824 Opts.ShowCategories = 1; 825 else if (ShowCategory == "name") 826 Opts.ShowCategories = 2; 827 else { 828 Success = false; 829 if (Diags) 830 Diags->Report(diag::err_drv_invalid_value) 831 << Args.getLastArg(OPT_fdiagnostics_show_category)->getAsString(Args) 832 << ShowCategory; 833 } 834 835 StringRef Format = 836 Args.getLastArgValue(OPT_fdiagnostics_format, "clang"); 837 if (Format == "clang") 838 Opts.setFormat(DiagnosticOptions::Clang); 839 else if (Format == "msvc") 840 Opts.setFormat(DiagnosticOptions::MSVC); 841 else if (Format == "msvc-fallback") { 842 Opts.setFormat(DiagnosticOptions::MSVC); 843 Opts.CLFallbackMode = true; 844 } else if (Format == "vi") 845 Opts.setFormat(DiagnosticOptions::Vi); 846 else { 847 Success = false; 848 if (Diags) 849 Diags->Report(diag::err_drv_invalid_value) 850 << Args.getLastArg(OPT_fdiagnostics_format)->getAsString(Args) 851 << Format; 852 } 853 854 Opts.ShowSourceRanges = Args.hasArg(OPT_fdiagnostics_print_source_range_info); 855 Opts.ShowParseableFixits = Args.hasArg(OPT_fdiagnostics_parseable_fixits); 856 Opts.ShowPresumedLoc = !Args.hasArg(OPT_fno_diagnostics_use_presumed_location); 857 Opts.VerifyDiagnostics = Args.hasArg(OPT_verify); 858 DiagnosticLevelMask DiagMask = DiagnosticLevelMask::None; 859 Success &= parseDiagnosticLevelMask("-verify-ignore-unexpected=", 860 Args.getAllArgValues(OPT_verify_ignore_unexpected_EQ), 861 Diags, DiagMask); 862 if (Args.hasArg(OPT_verify_ignore_unexpected)) 863 DiagMask = DiagnosticLevelMask::All; 864 Opts.setVerifyIgnoreUnexpected(DiagMask); 865 Opts.ElideType = !Args.hasArg(OPT_fno_elide_type); 866 Opts.ShowTemplateTree = Args.hasArg(OPT_fdiagnostics_show_template_tree); 867 Opts.ErrorLimit = getLastArgIntValue(Args, OPT_ferror_limit, 0, Diags); 868 Opts.MacroBacktraceLimit = 869 getLastArgIntValue(Args, OPT_fmacro_backtrace_limit, 870 DiagnosticOptions::DefaultMacroBacktraceLimit, Diags); 871 Opts.TemplateBacktraceLimit = getLastArgIntValue( 872 Args, OPT_ftemplate_backtrace_limit, 873 DiagnosticOptions::DefaultTemplateBacktraceLimit, Diags); 874 Opts.ConstexprBacktraceLimit = getLastArgIntValue( 875 Args, OPT_fconstexpr_backtrace_limit, 876 DiagnosticOptions::DefaultConstexprBacktraceLimit, Diags); 877 Opts.SpellCheckingLimit = getLastArgIntValue( 878 Args, OPT_fspell_checking_limit, 879 DiagnosticOptions::DefaultSpellCheckingLimit, Diags); 880 Opts.TabStop = getLastArgIntValue(Args, OPT_ftabstop, 881 DiagnosticOptions::DefaultTabStop, Diags); 882 if (Opts.TabStop == 0 || Opts.TabStop > DiagnosticOptions::MaxTabStop) { 883 Opts.TabStop = DiagnosticOptions::DefaultTabStop; 884 if (Diags) 885 Diags->Report(diag::warn_ignoring_ftabstop_value) 886 << Opts.TabStop << DiagnosticOptions::DefaultTabStop; 887 } 888 Opts.MessageLength = getLastArgIntValue(Args, OPT_fmessage_length, 0, Diags); 889 addDiagnosticArgs(Args, OPT_W_Group, OPT_W_value_Group, Opts.Warnings); 890 addDiagnosticArgs(Args, OPT_R_Group, OPT_R_value_Group, Opts.Remarks); 891 892 return Success; 893} 894 895static void ParseFileSystemArgs(FileSystemOptions &Opts, ArgList &Args) { 896 Opts.WorkingDir = Args.getLastArgValue(OPT_working_directory); 897} 898 899/// Parse the argument to the -ftest-module-file-extension 900/// command-line argument. 901/// 902/// \returns true on error, false on success. 903static bool parseTestModuleFileExtensionArg(StringRef Arg, 904 std::string &BlockName, 905 unsigned &MajorVersion, 906 unsigned &MinorVersion, 907 bool &Hashed, 908 std::string &UserInfo) { 909 SmallVector<StringRef, 5> Args; 910 Arg.split(Args, ':', 5); 911 if (Args.size() < 5) 912 return true; 913 914 BlockName = Args[0]; 915 if (Args[1].getAsInteger(10, MajorVersion)) return true; 916 if (Args[2].getAsInteger(10, MinorVersion)) return true; 917 if (Args[3].getAsInteger(2, Hashed)) return true; 918 if (Args.size() > 4) 919 UserInfo = Args[4]; 920 return false; 921} 922 923static InputKind ParseFrontendArgs(FrontendOptions &Opts, ArgList &Args, 924 DiagnosticsEngine &Diags) { 925 using namespace options; 926 Opts.ProgramAction = frontend::ParseSyntaxOnly; 927 if (const Arg *A = Args.getLastArg(OPT_Action_Group)) { 928 switch (A->getOption().getID()) { 929 default: 930 llvm_unreachable("Invalid option in group!"); 931 case OPT_ast_list: 932 Opts.ProgramAction = frontend::ASTDeclList; break; 933 case OPT_ast_dump: 934 case OPT_ast_dump_lookups: 935 Opts.ProgramAction = frontend::ASTDump; break; 936 case OPT_ast_print: 937 Opts.ProgramAction = frontend::ASTPrint; break; 938 case OPT_ast_view: 939 Opts.ProgramAction = frontend::ASTView; break; 940 case OPT_dump_raw_tokens: 941 Opts.ProgramAction = frontend::DumpRawTokens; break; 942 case OPT_dump_tokens: 943 Opts.ProgramAction = frontend::DumpTokens; break; 944 case OPT_S: 945 Opts.ProgramAction = frontend::EmitAssembly; break; 946 case OPT_emit_llvm_bc: 947 Opts.ProgramAction = frontend::EmitBC; break; 948 case OPT_emit_html: 949 Opts.ProgramAction = frontend::EmitHTML; break; 950 case OPT_emit_llvm: 951 Opts.ProgramAction = frontend::EmitLLVM; break; 952 case OPT_emit_llvm_only: 953 Opts.ProgramAction = frontend::EmitLLVMOnly; break; 954 case OPT_emit_codegen_only: 955 Opts.ProgramAction = frontend::EmitCodeGenOnly; break; 956 case OPT_emit_obj: 957 Opts.ProgramAction = frontend::EmitObj; break; 958 case OPT_fixit_EQ: 959 Opts.FixItSuffix = A->getValue(); 960 // fall-through! 961 case OPT_fixit: 962 Opts.ProgramAction = frontend::FixIt; break; 963 case OPT_emit_module: 964 Opts.ProgramAction = frontend::GenerateModule; break; 965 case OPT_emit_pch: 966 Opts.ProgramAction = frontend::GeneratePCH; break; 967 case OPT_emit_pth: 968 Opts.ProgramAction = frontend::GeneratePTH; break; 969 case OPT_init_only: 970 Opts.ProgramAction = frontend::InitOnly; break; 971 case OPT_fsyntax_only: 972 Opts.ProgramAction = frontend::ParseSyntaxOnly; break; 973 case OPT_module_file_info: 974 Opts.ProgramAction = frontend::ModuleFileInfo; break; 975 case OPT_verify_pch: 976 Opts.ProgramAction = frontend::VerifyPCH; break; 977 case OPT_print_decl_contexts: 978 Opts.ProgramAction = frontend::PrintDeclContext; break; 979 case OPT_print_preamble: 980 Opts.ProgramAction = frontend::PrintPreamble; break; 981 case OPT_E: 982 Opts.ProgramAction = frontend::PrintPreprocessedInput; break; 983 case OPT_rewrite_macros: 984 Opts.ProgramAction = frontend::RewriteMacros; break; 985 case OPT_rewrite_objc: 986 Opts.ProgramAction = frontend::RewriteObjC; break; 987 case OPT_rewrite_test: 988 Opts.ProgramAction = frontend::RewriteTest; break; 989 case OPT_analyze: 990 Opts.ProgramAction = frontend::RunAnalysis; break; 991 case OPT_migrate: 992 Opts.ProgramAction = frontend::MigrateSource; break; 993 case OPT_Eonly: 994 Opts.ProgramAction = frontend::RunPreprocessorOnly; break; 995 } 996 } 997 998 if (const Arg* A = Args.getLastArg(OPT_plugin)) { 999 Opts.Plugins.emplace_back(A->getValue(0)); 1000 Opts.ProgramAction = frontend::PluginAction; 1001 Opts.ActionName = A->getValue(); 1002 1003 for (const Arg *AA : Args.filtered(OPT_plugin_arg)) 1004 if (AA->getValue(0) == Opts.ActionName) 1005 Opts.PluginArgs.emplace_back(AA->getValue(1)); 1006 } 1007 1008 Opts.AddPluginActions = Args.getAllArgValues(OPT_add_plugin); 1009 Opts.AddPluginArgs.resize(Opts.AddPluginActions.size()); 1010 for (int i = 0, e = Opts.AddPluginActions.size(); i != e; ++i) 1011 for (const Arg *A : Args.filtered(OPT_plugin_arg)) 1012 if (A->getValue(0) == Opts.AddPluginActions[i]) 1013 Opts.AddPluginArgs[i].emplace_back(A->getValue(1)); 1014 1015 for (const std::string &Arg : 1016 Args.getAllArgValues(OPT_ftest_module_file_extension_EQ)) { 1017 std::string BlockName; 1018 unsigned MajorVersion; 1019 unsigned MinorVersion; 1020 bool Hashed; 1021 std::string UserInfo; 1022 if (parseTestModuleFileExtensionArg(Arg, BlockName, MajorVersion, 1023 MinorVersion, Hashed, UserInfo)) { 1024 Diags.Report(diag::err_test_module_file_extension_format) << Arg; 1025 1026 continue; 1027 } 1028 1029 // Add the testing module file extension. 1030 Opts.ModuleFileExtensions.push_back( 1031 new TestModuleFileExtension(BlockName, MajorVersion, MinorVersion, 1032 Hashed, UserInfo)); 1033 } 1034 1035 if (const Arg *A = Args.getLastArg(OPT_code_completion_at)) { 1036 Opts.CodeCompletionAt = 1037 ParsedSourceLocation::FromString(A->getValue()); 1038 if (Opts.CodeCompletionAt.FileName.empty()) 1039 Diags.Report(diag::err_drv_invalid_value) 1040 << A->getAsString(Args) << A->getValue(); 1041 } 1042 Opts.DisableFree = Args.hasArg(OPT_disable_free); 1043 1044 Opts.OutputFile = Args.getLastArgValue(OPT_o); 1045 Opts.Plugins = Args.getAllArgValues(OPT_load); 1046 Opts.RelocatablePCH = Args.hasArg(OPT_relocatable_pch); 1047 Opts.ShowHelp = Args.hasArg(OPT_help); 1048 Opts.ShowStats = Args.hasArg(OPT_print_stats); 1049 Opts.ShowTimers = Args.hasArg(OPT_ftime_report); 1050 Opts.ShowVersion = Args.hasArg(OPT_version); 1051 Opts.ASTMergeFiles = Args.getAllArgValues(OPT_ast_merge); 1052 Opts.LLVMArgs = Args.getAllArgValues(OPT_mllvm); 1053 Opts.FixWhatYouCan = Args.hasArg(OPT_fix_what_you_can); 1054 Opts.FixOnlyWarnings = Args.hasArg(OPT_fix_only_warnings); 1055 Opts.FixAndRecompile = Args.hasArg(OPT_fixit_recompile); 1056 Opts.FixToTemporaries = Args.hasArg(OPT_fixit_to_temp); 1057 Opts.ASTDumpDecls = Args.hasArg(OPT_ast_dump); 1058 Opts.ASTDumpFilter = Args.getLastArgValue(OPT_ast_dump_filter); 1059 Opts.ASTDumpLookups = Args.hasArg(OPT_ast_dump_lookups); 1060 Opts.UseGlobalModuleIndex = !Args.hasArg(OPT_fno_modules_global_index); 1061 Opts.GenerateGlobalModuleIndex = Opts.UseGlobalModuleIndex; 1062 Opts.ModuleMapFiles = Args.getAllArgValues(OPT_fmodule_map_file); 1063 Opts.ModuleFiles = Args.getAllArgValues(OPT_fmodule_file); 1064 Opts.ModulesEmbedFiles = Args.getAllArgValues(OPT_fmodules_embed_file_EQ); 1065 Opts.ModulesEmbedAllFiles = Args.hasArg(OPT_fmodules_embed_all_files); 1066 1067 Opts.CodeCompleteOpts.IncludeMacros 1068 = Args.hasArg(OPT_code_completion_macros); 1069 Opts.CodeCompleteOpts.IncludeCodePatterns 1070 = Args.hasArg(OPT_code_completion_patterns); 1071 Opts.CodeCompleteOpts.IncludeGlobals 1072 = !Args.hasArg(OPT_no_code_completion_globals); 1073 Opts.CodeCompleteOpts.IncludeBriefComments 1074 = Args.hasArg(OPT_code_completion_brief_comments); 1075 1076 Opts.OverrideRecordLayoutsFile 1077 = Args.getLastArgValue(OPT_foverride_record_layout_EQ); 1078 Opts.AuxTriple = 1079 llvm::Triple::normalize(Args.getLastArgValue(OPT_aux_triple)); 1080 1081 if (const Arg *A = Args.getLastArg(OPT_arcmt_check, 1082 OPT_arcmt_modify, 1083 OPT_arcmt_migrate)) { 1084 switch (A->getOption().getID()) { 1085 default: 1086 llvm_unreachable("missed a case"); 1087 case OPT_arcmt_check: 1088 Opts.ARCMTAction = FrontendOptions::ARCMT_Check; 1089 break; 1090 case OPT_arcmt_modify: 1091 Opts.ARCMTAction = FrontendOptions::ARCMT_Modify; 1092 break; 1093 case OPT_arcmt_migrate: 1094 Opts.ARCMTAction = FrontendOptions::ARCMT_Migrate; 1095 break; 1096 } 1097 } 1098 Opts.MTMigrateDir = Args.getLastArgValue(OPT_mt_migrate_directory); 1099 Opts.ARCMTMigrateReportOut 1100 = Args.getLastArgValue(OPT_arcmt_migrate_report_output); 1101 Opts.ARCMTMigrateEmitARCErrors 1102 = Args.hasArg(OPT_arcmt_migrate_emit_arc_errors); 1103 1104 if (Args.hasArg(OPT_objcmt_migrate_literals)) 1105 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_Literals; 1106 if (Args.hasArg(OPT_objcmt_migrate_subscripting)) 1107 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_Subscripting; 1108 if (Args.hasArg(OPT_objcmt_migrate_property_dot_syntax)) 1109 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_PropertyDotSyntax; 1110 if (Args.hasArg(OPT_objcmt_migrate_property)) 1111 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_Property; 1112 if (Args.hasArg(OPT_objcmt_migrate_readonly_property)) 1113 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_ReadonlyProperty; 1114 if (Args.hasArg(OPT_objcmt_migrate_readwrite_property)) 1115 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_ReadwriteProperty; 1116 if (Args.hasArg(OPT_objcmt_migrate_annotation)) 1117 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_Annotation; 1118 if (Args.hasArg(OPT_objcmt_returns_innerpointer_property)) 1119 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_ReturnsInnerPointerProperty; 1120 if (Args.hasArg(OPT_objcmt_migrate_instancetype)) 1121 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_Instancetype; 1122 if (Args.hasArg(OPT_objcmt_migrate_nsmacros)) 1123 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_NsMacros; 1124 if (Args.hasArg(OPT_objcmt_migrate_protocol_conformance)) 1125 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_ProtocolConformance; 1126 if (Args.hasArg(OPT_objcmt_atomic_property)) 1127 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_AtomicProperty; 1128 if (Args.hasArg(OPT_objcmt_ns_nonatomic_iosonly)) 1129 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_NsAtomicIOSOnlyProperty; 1130 if (Args.hasArg(OPT_objcmt_migrate_designated_init)) 1131 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_DesignatedInitializer; 1132 if (Args.hasArg(OPT_objcmt_migrate_all)) 1133 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_MigrateDecls; 1134 1135 Opts.ObjCMTWhiteListPath = Args.getLastArgValue(OPT_objcmt_whitelist_dir_path); 1136 1137 if (Opts.ARCMTAction != FrontendOptions::ARCMT_None && 1138 Opts.ObjCMTAction != FrontendOptions::ObjCMT_None) { 1139 Diags.Report(diag::err_drv_argument_not_allowed_with) 1140 << "ARC migration" << "ObjC migration"; 1141 } 1142 1143 InputKind DashX = IK_None; 1144 if (const Arg *A = Args.getLastArg(OPT_x)) { 1145 DashX = llvm::StringSwitch<InputKind>(A->getValue()) 1146 .Case("c", IK_C) 1147 .Case("cl", IK_OpenCL) 1148 .Case("cuda", IK_CUDA) 1149 .Case("c++", IK_CXX) 1150 .Case("objective-c", IK_ObjC) 1151 .Case("objective-c++", IK_ObjCXX) 1152 .Case("cpp-output", IK_PreprocessedC) 1153 .Case("assembler-with-cpp", IK_Asm) 1154 .Case("c++-cpp-output", IK_PreprocessedCXX) 1155 .Case("cuda-cpp-output", IK_PreprocessedCuda) 1156 .Case("objective-c-cpp-output", IK_PreprocessedObjC) 1157 .Case("objc-cpp-output", IK_PreprocessedObjC) 1158 .Case("objective-c++-cpp-output", IK_PreprocessedObjCXX) 1159 .Case("objc++-cpp-output", IK_PreprocessedObjCXX) 1160 .Case("c-header", IK_C) 1161 .Case("cl-header", IK_OpenCL) 1162 .Case("objective-c-header", IK_ObjC) 1163 .Case("c++-header", IK_CXX) 1164 .Case("objective-c++-header", IK_ObjCXX) 1165 .Cases("ast", "pcm", IK_AST) 1166 .Case("ir", IK_LLVM_IR) 1167 .Default(IK_None); 1168 if (DashX == IK_None) 1169 Diags.Report(diag::err_drv_invalid_value) 1170 << A->getAsString(Args) << A->getValue(); 1171 } 1172 1173 // '-' is the default input if none is given. 1174 std::vector<std::string> Inputs = Args.getAllArgValues(OPT_INPUT); 1175 Opts.Inputs.clear(); 1176 if (Inputs.empty()) 1177 Inputs.push_back("-"); 1178 for (unsigned i = 0, e = Inputs.size(); i != e; ++i) { 1179 InputKind IK = DashX; 1180 if (IK == IK_None) { 1181 IK = FrontendOptions::getInputKindForExtension( 1182 StringRef(Inputs[i]).rsplit('.').second); 1183 // FIXME: Remove this hack. 1184 if (i == 0) 1185 DashX = IK; 1186 } 1187 Opts.Inputs.emplace_back(std::move(Inputs[i]), IK); 1188 } 1189 1190 return DashX; 1191} 1192 1193std::string CompilerInvocation::GetResourcesPath(const char *Argv0, 1194 void *MainAddr) { 1195 std::string ClangExecutable = 1196 llvm::sys::fs::getMainExecutable(Argv0, MainAddr); 1197 StringRef Dir = llvm::sys::path::parent_path(ClangExecutable); 1198 1199 // Compute the path to the resource directory. 1200 StringRef ClangResourceDir(CLANG_RESOURCE_DIR); 1201 SmallString<128> P(Dir); 1202 if (ClangResourceDir != "") 1203 llvm::sys::path::append(P, ClangResourceDir); 1204 else 1205 llvm::sys::path::append(P, "..", Twine("lib") + CLANG_LIBDIR_SUFFIX, 1206 "clang", CLANG_VERSION_STRING); 1207 1208 return P.str(); 1209} 1210 1211static void ParseHeaderSearchArgs(HeaderSearchOptions &Opts, ArgList &Args) { 1212 using namespace options; 1213 Opts.Sysroot = Args.getLastArgValue(OPT_isysroot, "/"); 1214 Opts.Verbose = Args.hasArg(OPT_v); 1215 Opts.UseBuiltinIncludes = !Args.hasArg(OPT_nobuiltininc); 1216 Opts.UseStandardSystemIncludes = !Args.hasArg(OPT_nostdsysteminc); 1217 Opts.UseStandardCXXIncludes = !Args.hasArg(OPT_nostdincxx); 1218 if (const Arg *A = Args.getLastArg(OPT_stdlib_EQ)) 1219 Opts.UseLibcxx = (strcmp(A->getValue(), "libc++") == 0); 1220 Opts.ResourceDir = Args.getLastArgValue(OPT_resource_dir); 1221 Opts.ModuleCachePath = Args.getLastArgValue(OPT_fmodules_cache_path); 1222 Opts.ModuleUserBuildPath = Args.getLastArgValue(OPT_fmodules_user_build_path); 1223 Opts.DisableModuleHash = Args.hasArg(OPT_fdisable_module_hash); 1224 Opts.ImplicitModuleMaps = Args.hasArg(OPT_fimplicit_module_maps); 1225 Opts.ModuleMapFileHomeIsCwd = Args.hasArg(OPT_fmodule_map_file_home_is_cwd); 1226 Opts.ModuleCachePruneInterval = 1227 getLastArgIntValue(Args, OPT_fmodules_prune_interval, 7 * 24 * 60 * 60); 1228 Opts.ModuleCachePruneAfter = 1229 getLastArgIntValue(Args, OPT_fmodules_prune_after, 31 * 24 * 60 * 60); 1230 Opts.ModulesValidateOncePerBuildSession = 1231 Args.hasArg(OPT_fmodules_validate_once_per_build_session); 1232 Opts.BuildSessionTimestamp = 1233 getLastArgUInt64Value(Args, OPT_fbuild_session_timestamp, 0); 1234 Opts.ModulesValidateSystemHeaders = 1235 Args.hasArg(OPT_fmodules_validate_system_headers); 1236 if (const Arg *A = Args.getLastArg(OPT_fmodule_format_EQ)) 1237 Opts.ModuleFormat = A->getValue(); 1238 1239 for (const Arg *A : Args.filtered(OPT_fmodules_ignore_macro)) { 1240 StringRef MacroDef = A->getValue(); 1241 Opts.ModulesIgnoreMacros.insert(MacroDef.split('=').first); 1242 } 1243 1244 // Add -I..., -F..., and -index-header-map options in order. 1245 bool IsIndexHeaderMap = false; 1246 for (const Arg *A : Args.filtered(OPT_I, OPT_F, OPT_index_header_map)) { 1247 if (A->getOption().matches(OPT_index_header_map)) { 1248 // -index-header-map applies to the next -I or -F. 1249 IsIndexHeaderMap = true; 1250 continue; 1251 } 1252 1253 frontend::IncludeDirGroup Group = 1254 IsIndexHeaderMap ? frontend::IndexHeaderMap : frontend::Angled; 1255 1256 Opts.AddPath(A->getValue(), Group, 1257 /*IsFramework=*/A->getOption().matches(OPT_F), true); 1258 IsIndexHeaderMap = false; 1259 } 1260 1261 // Add -iprefix/-iwithprefix/-iwithprefixbefore options. 1262 StringRef Prefix = ""; // FIXME: This isn't the correct default prefix. 1263 for (const Arg *A : 1264 Args.filtered(OPT_iprefix, OPT_iwithprefix, OPT_iwithprefixbefore)) { 1265 if (A->getOption().matches(OPT_iprefix)) 1266 Prefix = A->getValue(); 1267 else if (A->getOption().matches(OPT_iwithprefix)) 1268 Opts.AddPath(Prefix.str() + A->getValue(), frontend::After, false, true); 1269 else 1270 Opts.AddPath(Prefix.str() + A->getValue(), frontend::Angled, false, true); 1271 } 1272 1273 for (const Arg *A : Args.filtered(OPT_idirafter)) 1274 Opts.AddPath(A->getValue(), frontend::After, false, true); 1275 for (const Arg *A : Args.filtered(OPT_iquote)) 1276 Opts.AddPath(A->getValue(), frontend::Quoted, false, true); 1277 for (const Arg *A : Args.filtered(OPT_isystem, OPT_iwithsysroot)) 1278 Opts.AddPath(A->getValue(), frontend::System, false, 1279 !A->getOption().matches(OPT_iwithsysroot)); 1280 for (const Arg *A : Args.filtered(OPT_iframework)) 1281 Opts.AddPath(A->getValue(), frontend::System, true, true); 1282 1283 // Add the paths for the various language specific isystem flags. 1284 for (const Arg *A : Args.filtered(OPT_c_isystem)) 1285 Opts.AddPath(A->getValue(), frontend::CSystem, false, true); 1286 for (const Arg *A : Args.filtered(OPT_cxx_isystem)) 1287 Opts.AddPath(A->getValue(), frontend::CXXSystem, false, true); 1288 for (const Arg *A : Args.filtered(OPT_objc_isystem)) 1289 Opts.AddPath(A->getValue(), frontend::ObjCSystem, false,true); 1290 for (const Arg *A : Args.filtered(OPT_objcxx_isystem)) 1291 Opts.AddPath(A->getValue(), frontend::ObjCXXSystem, false, true); 1292 1293 // Add the internal paths from a driver that detects standard include paths. 1294 for (const Arg *A : 1295 Args.filtered(OPT_internal_isystem, OPT_internal_externc_isystem)) { 1296 frontend::IncludeDirGroup Group = frontend::System; 1297 if (A->getOption().matches(OPT_internal_externc_isystem)) 1298 Group = frontend::ExternCSystem; 1299 Opts.AddPath(A->getValue(), Group, false, true); 1300 } 1301 1302 // Add the path prefixes which are implicitly treated as being system headers. 1303 for (const Arg *A : 1304 Args.filtered(OPT_system_header_prefix, OPT_no_system_header_prefix)) 1305 Opts.AddSystemHeaderPrefix( 1306 A->getValue(), A->getOption().matches(OPT_system_header_prefix)); 1307 1308 for (const Arg *A : Args.filtered(OPT_ivfsoverlay)) 1309 Opts.AddVFSOverlayFile(A->getValue()); 1310} 1311 1312void CompilerInvocation::setLangDefaults(LangOptions &Opts, InputKind IK, 1313 LangStandard::Kind LangStd) { 1314 // Set some properties which depend solely on the input kind; it would be nice 1315 // to move these to the language standard, and have the driver resolve the 1316 // input kind + language standard. 1317 if (IK == IK_Asm) { 1318 Opts.AsmPreprocessor = 1; 1319 } else if (IK == IK_ObjC || 1320 IK == IK_ObjCXX || 1321 IK == IK_PreprocessedObjC || 1322 IK == IK_PreprocessedObjCXX) { 1323 Opts.ObjC1 = Opts.ObjC2 = 1; 1324 } 1325 1326 if (LangStd == LangStandard::lang_unspecified) { 1327 // Based on the base language, pick one. 1328 switch (IK) { 1329 case IK_None: 1330 case IK_AST: 1331 case IK_LLVM_IR: 1332 llvm_unreachable("Invalid input kind!"); 1333 case IK_OpenCL: 1334 LangStd = LangStandard::lang_opencl; 1335 break; 1336 case IK_CUDA: 1337 case IK_PreprocessedCuda: 1338 LangStd = LangStandard::lang_cuda; 1339 break; 1340 case IK_Asm: 1341 case IK_C: 1342 case IK_PreprocessedC: 1343 case IK_ObjC: 1344 case IK_PreprocessedObjC: 1345 LangStd = LangStandard::lang_gnu11; 1346 break; 1347 case IK_CXX: 1348 case IK_PreprocessedCXX: 1349 case IK_ObjCXX: 1350 case IK_PreprocessedObjCXX: 1351 LangStd = LangStandard::lang_gnucxx98; 1352 break; 1353 } 1354 } 1355 1356 const LangStandard &Std = LangStandard::getLangStandardForKind(LangStd); 1357 Opts.LineComment = Std.hasLineComments(); 1358 Opts.C99 = Std.isC99(); 1359 Opts.C11 = Std.isC11(); 1360 Opts.CPlusPlus = Std.isCPlusPlus(); 1361 Opts.CPlusPlus11 = Std.isCPlusPlus11(); 1362 Opts.CPlusPlus14 = Std.isCPlusPlus14(); 1363 Opts.CPlusPlus1z = Std.isCPlusPlus1z(); 1364 Opts.Digraphs = Std.hasDigraphs(); 1365 Opts.GNUMode = Std.isGNUMode(); 1366 Opts.GNUInline = Std.isC89(); 1367 Opts.HexFloats = Std.hasHexFloats(); 1368 Opts.ImplicitInt = Std.hasImplicitInt(); 1369 1370 // Set OpenCL Version. 1371 Opts.OpenCL = LangStd == LangStandard::lang_opencl || IK == IK_OpenCL; 1372 if (LangStd == LangStandard::lang_opencl) 1373 Opts.OpenCLVersion = 100; 1374 else if (LangStd == LangStandard::lang_opencl11) 1375 Opts.OpenCLVersion = 110; 1376 else if (LangStd == LangStandard::lang_opencl12) 1377 Opts.OpenCLVersion = 120; 1378 else if (LangStd == LangStandard::lang_opencl20) 1379 Opts.OpenCLVersion = 200; 1380 1381 // OpenCL has some additional defaults. 1382 if (Opts.OpenCL) { 1383 Opts.AltiVec = 0; 1384 Opts.ZVector = 0; 1385 Opts.CXXOperatorNames = 1; 1386 Opts.LaxVectorConversions = 0; 1387 Opts.DefaultFPContract = 1; 1388 Opts.NativeHalfType = 1; 1389 } 1390 1391 Opts.CUDA = IK == IK_CUDA || IK == IK_PreprocessedCuda || 1392 LangStd == LangStandard::lang_cuda; 1393 1394 // OpenCL and C++ both have bool, true, false keywords. 1395 Opts.Bool = Opts.OpenCL || Opts.CPlusPlus; 1396 1397 // OpenCL has half keyword 1398 Opts.Half = Opts.OpenCL; 1399 1400 // C++ has wchar_t keyword. 1401 Opts.WChar = Opts.CPlusPlus; 1402 1403 Opts.GNUKeywords = Opts.GNUMode; 1404 Opts.CXXOperatorNames = Opts.CPlusPlus; 1405 1406 Opts.DollarIdents = !Opts.AsmPreprocessor; 1407} 1408 1409/// Attempt to parse a visibility value out of the given argument. 1410static Visibility parseVisibility(Arg *arg, ArgList &args, 1411 DiagnosticsEngine &diags) { 1412 StringRef value = arg->getValue(); 1413 if (value == "default") { 1414 return DefaultVisibility; 1415 } else if (value == "hidden" || value == "internal") { 1416 return HiddenVisibility; 1417 } else if (value == "protected") { 1418 // FIXME: diagnose if target does not support protected visibility 1419 return ProtectedVisibility; 1420 } 1421 1422 diags.Report(diag::err_drv_invalid_value) 1423 << arg->getAsString(args) << value; 1424 return DefaultVisibility; 1425} 1426 1427static void ParseLangArgs(LangOptions &Opts, ArgList &Args, InputKind IK, 1428 DiagnosticsEngine &Diags) { 1429 // FIXME: Cleanup per-file based stuff. 1430 LangStandard::Kind LangStd = LangStandard::lang_unspecified; 1431 if (const Arg *A = Args.getLastArg(OPT_std_EQ)) { 1432 LangStd = llvm::StringSwitch<LangStandard::Kind>(A->getValue()) 1433#define LANGSTANDARD(id, name, desc, features) \ 1434 .Case(name, LangStandard::lang_##id) 1435#include "clang/Frontend/LangStandards.def" 1436 .Default(LangStandard::lang_unspecified); 1437 if (LangStd == LangStandard::lang_unspecified) 1438 Diags.Report(diag::err_drv_invalid_value) 1439 << A->getAsString(Args) << A->getValue(); 1440 else { 1441 // Valid standard, check to make sure language and standard are 1442 // compatible. 1443 const LangStandard &Std = LangStandard::getLangStandardForKind(LangStd); 1444 switch (IK) { 1445 case IK_C: 1446 case IK_ObjC: 1447 case IK_PreprocessedC: 1448 case IK_PreprocessedObjC: 1449 if (!(Std.isC89() || Std.isC99())) 1450 Diags.Report(diag::err_drv_argument_not_allowed_with) 1451 << A->getAsString(Args) << "C/ObjC"; 1452 break; 1453 case IK_CXX: 1454 case IK_ObjCXX: 1455 case IK_PreprocessedCXX: 1456 case IK_PreprocessedObjCXX: 1457 if (!Std.isCPlusPlus()) 1458 Diags.Report(diag::err_drv_argument_not_allowed_with) 1459 << A->getAsString(Args) << "C++/ObjC++"; 1460 break; 1461 case IK_OpenCL: 1462 if (!Std.isC99()) 1463 Diags.Report(diag::err_drv_argument_not_allowed_with) 1464 << A->getAsString(Args) << "OpenCL"; 1465 break; 1466 case IK_CUDA: 1467 case IK_PreprocessedCuda: 1468 if (!Std.isCPlusPlus()) 1469 Diags.Report(diag::err_drv_argument_not_allowed_with) 1470 << A->getAsString(Args) << "CUDA"; 1471 break; 1472 default: 1473 break; 1474 } 1475 } 1476 } 1477 1478 // -cl-std only applies for OpenCL language standards. 1479 // Override the -std option in this case. 1480 if (const Arg *A = Args.getLastArg(OPT_cl_std_EQ)) { 1481 LangStandard::Kind OpenCLLangStd 1482 = llvm::StringSwitch<LangStandard::Kind>(A->getValue()) 1483 .Case("CL", LangStandard::lang_opencl) 1484 .Case("CL1.1", LangStandard::lang_opencl11) 1485 .Case("CL1.2", LangStandard::lang_opencl12) 1486 .Case("CL2.0", LangStandard::lang_opencl20) 1487 .Default(LangStandard::lang_unspecified); 1488 1489 if (OpenCLLangStd == LangStandard::lang_unspecified) { 1490 Diags.Report(diag::err_drv_invalid_value) 1491 << A->getAsString(Args) << A->getValue(); 1492 } 1493 else 1494 LangStd = OpenCLLangStd; 1495 } 1496 1497 CompilerInvocation::setLangDefaults(Opts, IK, LangStd); 1498 1499 // We abuse '-f[no-]gnu-keywords' to force overriding all GNU-extension 1500 // keywords. This behavior is provided by GCC's poorly named '-fasm' flag, 1501 // while a subset (the non-C++ GNU keywords) is provided by GCC's 1502 // '-fgnu-keywords'. Clang conflates the two for simplicity under the single 1503 // name, as it doesn't seem a useful distinction. 1504 Opts.GNUKeywords = Args.hasFlag(OPT_fgnu_keywords, OPT_fno_gnu_keywords, 1505 Opts.GNUKeywords); 1506 1507 if (Args.hasArg(OPT_fno_operator_names)) 1508 Opts.CXXOperatorNames = 0; 1509 1510 if (Args.hasArg(OPT_fcuda_is_device)) 1511 Opts.CUDAIsDevice = 1; 1512 1513 if (Args.hasArg(OPT_fcuda_allow_host_calls_from_host_device)) 1514 Opts.CUDAAllowHostCallsFromHostDevice = 1; 1515 1516 if (Args.hasArg(OPT_fcuda_disable_target_call_checks)) 1517 Opts.CUDADisableTargetCallChecks = 1; 1518 1519 if (Args.hasArg(OPT_fcuda_target_overloads)) 1520 Opts.CUDATargetOverloads = 1; 1521 1522 if (Opts.ObjC1) { 1523 if (Arg *arg = Args.getLastArg(OPT_fobjc_runtime_EQ)) { 1524 StringRef value = arg->getValue(); 1525 if (Opts.ObjCRuntime.tryParse(value)) 1526 Diags.Report(diag::err_drv_unknown_objc_runtime) << value; 1527 } 1528 1529 if (Args.hasArg(OPT_fobjc_gc_only)) 1530 Opts.setGC(LangOptions::GCOnly); 1531 else if (Args.hasArg(OPT_fobjc_gc)) 1532 Opts.setGC(LangOptions::HybridGC); 1533 else if (Args.hasArg(OPT_fobjc_arc)) { 1534 Opts.ObjCAutoRefCount = 1; 1535 if (!Opts.ObjCRuntime.allowsARC()) 1536 Diags.Report(diag::err_arc_unsupported_on_runtime); 1537 } 1538 1539 // ObjCWeakRuntime tracks whether the runtime supports __weak, not 1540 // whether the feature is actually enabled. This is predominantly 1541 // determined by -fobjc-runtime, but we allow it to be overridden 1542 // from the command line for testing purposes. 1543 if (Args.hasArg(OPT_fobjc_runtime_has_weak)) 1544 Opts.ObjCWeakRuntime = 1; 1545 else 1546 Opts.ObjCWeakRuntime = Opts.ObjCRuntime.allowsWeak(); 1547 1548 // ObjCWeak determines whether __weak is actually enabled. 1549 // Note that we allow -fno-objc-weak to disable this even in ARC mode. 1550 if (auto weakArg = Args.getLastArg(OPT_fobjc_weak, OPT_fno_objc_weak)) { 1551 if (!weakArg->getOption().matches(OPT_fobjc_weak)) { 1552 assert(!Opts.ObjCWeak); 1553 } else if (Opts.getGC() != LangOptions::NonGC) { 1554 Diags.Report(diag::err_objc_weak_with_gc); 1555 } else if (!Opts.ObjCWeakRuntime) { 1556 Diags.Report(diag::err_objc_weak_unsupported); 1557 } else { 1558 Opts.ObjCWeak = 1; 1559 } 1560 } else if (Opts.ObjCAutoRefCount) { 1561 Opts.ObjCWeak = Opts.ObjCWeakRuntime; 1562 } 1563 1564 if (Args.hasArg(OPT_fno_objc_infer_related_result_type)) 1565 Opts.ObjCInferRelatedResultType = 0; 1566 1567 if (Args.hasArg(OPT_fobjc_subscripting_legacy_runtime)) 1568 Opts.ObjCSubscriptingLegacyRuntime = 1569 (Opts.ObjCRuntime.getKind() == ObjCRuntime::FragileMacOSX); 1570 } 1571 1572 if (Args.hasArg(OPT_fgnu89_inline)) { 1573 if (Opts.CPlusPlus) 1574 Diags.Report(diag::err_drv_argument_not_allowed_with) << "-fgnu89-inline" 1575 << "C++/ObjC++"; 1576 else 1577 Opts.GNUInline = 1; 1578 } 1579 1580 if (Args.hasArg(OPT_fapple_kext)) { 1581 if (!Opts.CPlusPlus) 1582 Diags.Report(diag::warn_c_kext); 1583 else 1584 Opts.AppleKext = 1; 1585 } 1586 1587 if (Args.hasArg(OPT_print_ivar_layout)) 1588 Opts.ObjCGCBitmapPrint = 1; 1589 if (Args.hasArg(OPT_fno_constant_cfstrings)) 1590 Opts.NoConstantCFStrings = 1; 1591 1592 if (Args.hasArg(OPT_faltivec)) 1593 Opts.AltiVec = 1; 1594 1595 if (Args.hasArg(OPT_fzvector)) 1596 Opts.ZVector = 1; 1597 1598 if (Args.hasArg(OPT_pthread)) 1599 Opts.POSIXThreads = 1; 1600 1601 // The value-visibility mode defaults to "default". 1602 if (Arg *visOpt = Args.getLastArg(OPT_fvisibility)) { 1603 Opts.setValueVisibilityMode(parseVisibility(visOpt, Args, Diags)); 1604 } else { 1605 Opts.setValueVisibilityMode(DefaultVisibility); 1606 } 1607 1608 // The type-visibility mode defaults to the value-visibility mode. 1609 if (Arg *typeVisOpt = Args.getLastArg(OPT_ftype_visibility)) { 1610 Opts.setTypeVisibilityMode(parseVisibility(typeVisOpt, Args, Diags)); 1611 } else { 1612 Opts.setTypeVisibilityMode(Opts.getValueVisibilityMode()); 1613 } 1614 1615 if (Args.hasArg(OPT_fvisibility_inlines_hidden)) 1616 Opts.InlineVisibilityHidden = 1; 1617 1618 if (Args.hasArg(OPT_ftrapv)) { 1619 Opts.setSignedOverflowBehavior(LangOptions::SOB_Trapping); 1620 // Set the handler, if one is specified. 1621 Opts.OverflowHandler = 1622 Args.getLastArgValue(OPT_ftrapv_handler); 1623 } 1624 else if (Args.hasArg(OPT_fwrapv)) 1625 Opts.setSignedOverflowBehavior(LangOptions::SOB_Defined); 1626 1627 Opts.MSVCCompat = Args.hasArg(OPT_fms_compatibility); 1628 Opts.MicrosoftExt = Opts.MSVCCompat || Args.hasArg(OPT_fms_extensions); 1629 Opts.AsmBlocks = Args.hasArg(OPT_fasm_blocks) || Opts.MicrosoftExt; 1630 Opts.MSCompatibilityVersion = 0; 1631 if (const Arg *A = Args.getLastArg(OPT_fms_compatibility_version)) { 1632 VersionTuple VT; 1633 if (VT.tryParse(A->getValue())) 1634 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) 1635 << A->getValue(); 1636 Opts.MSCompatibilityVersion = VT.getMajor() * 10000000 + 1637 VT.getMinor().getValueOr(0) * 100000 + 1638 VT.getSubminor().getValueOr(0); 1639 } 1640 1641 // Mimicing gcc's behavior, trigraphs are only enabled if -trigraphs 1642 // is specified, or -std is set to a conforming mode. 1643 // Trigraphs are disabled by default in c++1z onwards. 1644 Opts.Trigraphs = !Opts.GNUMode && !Opts.MSVCCompat && !Opts.CPlusPlus1z; 1645 Opts.Trigraphs = 1646 Args.hasFlag(OPT_ftrigraphs, OPT_fno_trigraphs, Opts.Trigraphs); 1647 1648 Opts.DollarIdents = Args.hasFlag(OPT_fdollars_in_identifiers, 1649 OPT_fno_dollars_in_identifiers, 1650 Opts.DollarIdents); 1651 Opts.PascalStrings = Args.hasArg(OPT_fpascal_strings); 1652 Opts.VtorDispMode = getLastArgIntValue(Args, OPT_vtordisp_mode_EQ, 1, Diags); 1653 Opts.Borland = Args.hasArg(OPT_fborland_extensions); 1654 Opts.WritableStrings = Args.hasArg(OPT_fwritable_strings); 1655 Opts.ConstStrings = Args.hasFlag(OPT_fconst_strings, OPT_fno_const_strings, 1656 Opts.ConstStrings); 1657 if (Args.hasArg(OPT_fno_lax_vector_conversions)) 1658 Opts.LaxVectorConversions = 0; 1659 if (Args.hasArg(OPT_fno_threadsafe_statics)) 1660 Opts.ThreadsafeStatics = 0; 1661 Opts.Exceptions = Args.hasArg(OPT_fexceptions); 1662 Opts.ObjCExceptions = Args.hasArg(OPT_fobjc_exceptions); 1663 Opts.CXXExceptions = Args.hasArg(OPT_fcxx_exceptions); 1664 Opts.SjLjExceptions = Args.hasArg(OPT_fsjlj_exceptions); 1665 Opts.TraditionalCPP = Args.hasArg(OPT_traditional_cpp); 1666 1667 Opts.RTTI = !Args.hasArg(OPT_fno_rtti); 1668 Opts.RTTIData = Opts.RTTI && !Args.hasArg(OPT_fno_rtti_data); 1669 Opts.Blocks = Args.hasArg(OPT_fblocks); 1670 Opts.BlocksRuntimeOptional = Args.hasArg(OPT_fblocks_runtime_optional); 1671 Opts.Coroutines = Args.hasArg(OPT_fcoroutines); 1672 Opts.Modules = Args.hasArg(OPT_fmodules); 1673 Opts.ModulesStrictDeclUse = Args.hasArg(OPT_fmodules_strict_decluse); 1674 Opts.ModulesDeclUse = 1675 Args.hasArg(OPT_fmodules_decluse) || Opts.ModulesStrictDeclUse; 1676 Opts.ModulesLocalVisibility = 1677 Args.hasArg(OPT_fmodules_local_submodule_visibility); 1678 Opts.ModulesSearchAll = Opts.Modules && 1679 !Args.hasArg(OPT_fno_modules_search_all) && 1680 Args.hasArg(OPT_fmodules_search_all); 1681 Opts.ModulesErrorRecovery = !Args.hasArg(OPT_fno_modules_error_recovery); 1682 Opts.ImplicitModules = !Args.hasArg(OPT_fno_implicit_modules); 1683 Opts.CharIsSigned = Opts.OpenCL || !Args.hasArg(OPT_fno_signed_char); 1684 Opts.WChar = Opts.CPlusPlus && !Args.hasArg(OPT_fno_wchar); 1685 Opts.ShortWChar = Args.hasFlag(OPT_fshort_wchar, OPT_fno_short_wchar, false); 1686 Opts.ShortEnums = Args.hasArg(OPT_fshort_enums); 1687 Opts.Freestanding = Args.hasArg(OPT_ffreestanding); 1688 Opts.NoBuiltin = Args.hasArg(OPT_fno_builtin) || Opts.Freestanding; 1689 if (!Opts.NoBuiltin) 1690 getAllNoBuiltinFuncValues(Args, Opts.NoBuiltinFuncs); 1691 Opts.NoMathBuiltin = Args.hasArg(OPT_fno_math_builtin); 1692 Opts.AssumeSaneOperatorNew = !Args.hasArg(OPT_fno_assume_sane_operator_new); 1693 Opts.SizedDeallocation = Args.hasArg(OPT_fsized_deallocation); 1694 Opts.ConceptsTS = Args.hasArg(OPT_fconcepts_ts); 1695 Opts.HeinousExtensions = Args.hasArg(OPT_fheinous_gnu_extensions); 1696 Opts.AccessControl = !Args.hasArg(OPT_fno_access_control); 1697 Opts.ElideConstructors = !Args.hasArg(OPT_fno_elide_constructors); 1698 Opts.MathErrno = !Opts.OpenCL && Args.hasArg(OPT_fmath_errno); 1699 Opts.InstantiationDepth = 1700 getLastArgIntValue(Args, OPT_ftemplate_depth, 256, Diags); 1701 Opts.ArrowDepth = 1702 getLastArgIntValue(Args, OPT_foperator_arrow_depth, 256, Diags); 1703 Opts.ConstexprCallDepth = 1704 getLastArgIntValue(Args, OPT_fconstexpr_depth, 512, Diags); 1705 Opts.ConstexprStepLimit = 1706 getLastArgIntValue(Args, OPT_fconstexpr_steps, 1048576, Diags); 1707 Opts.BracketDepth = getLastArgIntValue(Args, OPT_fbracket_depth, 256, Diags); 1708 Opts.DelayedTemplateParsing = Args.hasArg(OPT_fdelayed_template_parsing); 1709 Opts.NumLargeByValueCopy = 1710 getLastArgIntValue(Args, OPT_Wlarge_by_value_copy_EQ, 0, Diags); 1711 Opts.MSBitfields = Args.hasArg(OPT_mms_bitfields); 1712 Opts.ObjCConstantStringClass = 1713 Args.getLastArgValue(OPT_fconstant_string_class); 1714 Opts.ObjCDefaultSynthProperties = 1715 !Args.hasArg(OPT_disable_objc_default_synthesize_properties); 1716 Opts.EncodeExtendedBlockSig = 1717 Args.hasArg(OPT_fencode_extended_block_signature); 1718 Opts.EmitAllDecls = Args.hasArg(OPT_femit_all_decls); 1719 Opts.PackStruct = getLastArgIntValue(Args, OPT_fpack_struct_EQ, 0, Diags); 1720 Opts.MaxTypeAlign = getLastArgIntValue(Args, OPT_fmax_type_align_EQ, 0, Diags); 1721 Opts.PICLevel = getLastArgIntValue(Args, OPT_pic_level, 0, Diags); 1722 Opts.PIELevel = getLastArgIntValue(Args, OPT_pie_level, 0, Diags); 1723 Opts.Static = Args.hasArg(OPT_static_define); 1724 Opts.DumpRecordLayoutsSimple = Args.hasArg(OPT_fdump_record_layouts_simple); 1725 Opts.DumpRecordLayouts = Opts.DumpRecordLayoutsSimple 1726 || Args.hasArg(OPT_fdump_record_layouts); 1727 Opts.DumpVTableLayouts = Args.hasArg(OPT_fdump_vtable_layouts); 1728 Opts.SpellChecking = !Args.hasArg(OPT_fno_spell_checking); 1729 Opts.NoBitFieldTypeAlign = Args.hasArg(OPT_fno_bitfield_type_align); 1730 Opts.SinglePrecisionConstants = Args.hasArg(OPT_cl_single_precision_constant); 1731 Opts.FastRelaxedMath = Args.hasArg(OPT_cl_fast_relaxed_math); 1732 Opts.MRTD = Args.hasArg(OPT_mrtd); 1733 Opts.HexagonQdsp6Compat = Args.hasArg(OPT_mqdsp6_compat); 1734 Opts.FakeAddressSpaceMap = Args.hasArg(OPT_ffake_address_space_map); 1735 Opts.ParseUnknownAnytype = Args.hasArg(OPT_funknown_anytype); 1736 Opts.DebuggerSupport = Args.hasArg(OPT_fdebugger_support); 1737 Opts.DebuggerCastResultToId = Args.hasArg(OPT_fdebugger_cast_result_to_id); 1738 Opts.DebuggerObjCLiteral = Args.hasArg(OPT_fdebugger_objc_literal); 1739 Opts.ApplePragmaPack = Args.hasArg(OPT_fapple_pragma_pack); 1740 Opts.CurrentModule = Args.getLastArgValue(OPT_fmodule_name); 1741 Opts.AppExt = Args.hasArg(OPT_fapplication_extension); 1742 Opts.ImplementationOfModule = 1743 Args.getLastArgValue(OPT_fmodule_implementation_of); 1744 Opts.ModuleFeatures = Args.getAllArgValues(OPT_fmodule_feature); 1745 std::sort(Opts.ModuleFeatures.begin(), Opts.ModuleFeatures.end()); 1746 Opts.NativeHalfType |= Args.hasArg(OPT_fnative_half_type); 1747 Opts.HalfArgsAndReturns = Args.hasArg(OPT_fallow_half_arguments_and_returns); 1748 Opts.GNUAsm = !Args.hasArg(OPT_fno_gnu_inline_asm); 1749 1750 // __declspec is enabled by default for the PS4 by the driver, and also 1751 // enabled for Microsoft Extensions or Borland Extensions, here. 1752 // 1753 // FIXME: __declspec is also currently enabled for CUDA, but isn't really a 1754 // CUDA extension, however it is required for supporting cuda_builtin_vars.h, 1755 // which uses __declspec(property). Once that has been rewritten in terms of 1756 // something more generic, remove the Opts.CUDA term here. 1757 Opts.DeclSpecKeyword = 1758 Args.hasFlag(OPT_fdeclspec, OPT_fno_declspec, 1759 (Opts.MicrosoftExt || Opts.Borland || Opts.CUDA)); 1760 1761 if (!Opts.CurrentModule.empty() && !Opts.ImplementationOfModule.empty() && 1762 Opts.CurrentModule != Opts.ImplementationOfModule) { 1763 Diags.Report(diag::err_conflicting_module_names) 1764 << Opts.CurrentModule << Opts.ImplementationOfModule; 1765 } 1766 1767 // For now, we only support local submodule visibility in C++ (because we 1768 // heavily depend on the ODR for merging redefinitions). 1769 if (Opts.ModulesLocalVisibility && !Opts.CPlusPlus) 1770 Diags.Report(diag::err_drv_argument_not_allowed_with) 1771 << "-fmodules-local-submodule-visibility" << "C"; 1772 1773 if (Arg *A = Args.getLastArg(OPT_faddress_space_map_mangling_EQ)) { 1774 switch (llvm::StringSwitch<unsigned>(A->getValue()) 1775 .Case("target", LangOptions::ASMM_Target) 1776 .Case("no", LangOptions::ASMM_Off) 1777 .Case("yes", LangOptions::ASMM_On) 1778 .Default(255)) { 1779 default: 1780 Diags.Report(diag::err_drv_invalid_value) 1781 << "-faddress-space-map-mangling=" << A->getValue(); 1782 break; 1783 case LangOptions::ASMM_Target: 1784 Opts.setAddressSpaceMapMangling(LangOptions::ASMM_Target); 1785 break; 1786 case LangOptions::ASMM_On: 1787 Opts.setAddressSpaceMapMangling(LangOptions::ASMM_On); 1788 break; 1789 case LangOptions::ASMM_Off: 1790 Opts.setAddressSpaceMapMangling(LangOptions::ASMM_Off); 1791 break; 1792 } 1793 } 1794 1795 if (Arg *A = Args.getLastArg(OPT_fms_memptr_rep_EQ)) { 1796 LangOptions::PragmaMSPointersToMembersKind InheritanceModel = 1797 llvm::StringSwitch<LangOptions::PragmaMSPointersToMembersKind>( 1798 A->getValue()) 1799 .Case("single", 1800 LangOptions::PPTMK_FullGeneralitySingleInheritance) 1801 .Case("multiple", 1802 LangOptions::PPTMK_FullGeneralityMultipleInheritance) 1803 .Case("virtual", 1804 LangOptions::PPTMK_FullGeneralityVirtualInheritance) 1805 .Default(LangOptions::PPTMK_BestCase); 1806 if (InheritanceModel == LangOptions::PPTMK_BestCase) 1807 Diags.Report(diag::err_drv_invalid_value) 1808 << "-fms-memptr-rep=" << A->getValue(); 1809 1810 Opts.setMSPointerToMemberRepresentationMethod(InheritanceModel); 1811 } 1812 1813 // Check if -fopenmp is specified. 1814 Opts.OpenMP = Args.hasArg(options::OPT_fopenmp); 1815 Opts.OpenMPUseTLS = 1816 Opts.OpenMP && !Args.hasArg(options::OPT_fnoopenmp_use_tls); 1817 Opts.OpenMPIsDevice = 1818 Opts.OpenMP && Args.hasArg(options::OPT_fopenmp_is_device); 1819 1820 // Get the OpenMP target triples if any. 1821 if (Arg *A = Args.getLastArg(options::OPT_omptargets_EQ)) { 1822 1823 for (unsigned i = 0; i < A->getNumValues(); ++i) { 1824 llvm::Triple TT(A->getValue(i)); 1825 1826 if (TT.getArch() == llvm::Triple::UnknownArch) 1827 Diags.Report(clang::diag::err_drv_invalid_omp_target) << A->getValue(i); 1828 else 1829 Opts.OMPTargetTriples.push_back(TT); 1830 } 1831 } 1832 1833 // Get OpenMP host file path if any and report if a non existent file is 1834 // found 1835 if (Arg *A = Args.getLastArg(options::OPT_omp_host_ir_file_path)) { 1836 Opts.OMPHostIRFile = A->getValue(); 1837 if (!llvm::sys::fs::exists(Opts.OMPHostIRFile)) 1838 Diags.Report(clang::diag::err_drv_omp_host_ir_file_not_found) 1839 << Opts.OMPHostIRFile; 1840 } 1841 1842 // Record whether the __DEPRECATED define was requested. 1843 Opts.Deprecated = Args.hasFlag(OPT_fdeprecated_macro, 1844 OPT_fno_deprecated_macro, 1845 Opts.Deprecated); 1846 1847 // FIXME: Eliminate this dependency. 1848 unsigned Opt = getOptimizationLevel(Args, IK, Diags), 1849 OptSize = getOptimizationLevelSize(Args); 1850 Opts.Optimize = Opt != 0; 1851 Opts.OptimizeSize = OptSize != 0; 1852 1853 // This is the __NO_INLINE__ define, which just depends on things like the 1854 // optimization level and -fno-inline, not actually whether the backend has 1855 // inlining enabled. 1856 Opts.NoInlineDefine = !Opt || Args.hasArg(OPT_fno_inline); 1857 1858 Opts.FastMath = Args.hasArg(OPT_ffast_math) || 1859 Args.hasArg(OPT_cl_fast_relaxed_math); 1860 Opts.FiniteMathOnly = Args.hasArg(OPT_ffinite_math_only) || 1861 Args.hasArg(OPT_cl_finite_math_only) || 1862 Args.hasArg(OPT_cl_fast_relaxed_math); 1863 Opts.UnsafeFPMath = Args.hasArg(OPT_menable_unsafe_fp_math) || 1864 Args.hasArg(OPT_cl_unsafe_math_optimizations) || 1865 Args.hasArg(OPT_cl_fast_relaxed_math); 1866 1867 Opts.RetainCommentsFromSystemHeaders = 1868 Args.hasArg(OPT_fretain_comments_from_system_headers); 1869 1870 unsigned SSP = getLastArgIntValue(Args, OPT_stack_protector, 0, Diags); 1871 switch (SSP) { 1872 default: 1873 Diags.Report(diag::err_drv_invalid_value) 1874 << Args.getLastArg(OPT_stack_protector)->getAsString(Args) << SSP; 1875 break; 1876 case 0: Opts.setStackProtector(LangOptions::SSPOff); break; 1877 case 1: Opts.setStackProtector(LangOptions::SSPOn); break; 1878 case 2: Opts.setStackProtector(LangOptions::SSPStrong); break; 1879 case 3: Opts.setStackProtector(LangOptions::SSPReq); break; 1880 } 1881 1882 // Parse -fsanitize= arguments. 1883 parseSanitizerKinds("-fsanitize=", Args.getAllArgValues(OPT_fsanitize_EQ), 1884 Diags, Opts.Sanitize); 1885 // -fsanitize-address-field-padding=N has to be a LangOpt, parse it here. 1886 Opts.SanitizeAddressFieldPadding = 1887 getLastArgIntValue(Args, OPT_fsanitize_address_field_padding, 0, Diags); 1888 Opts.SanitizerBlacklistFiles = Args.getAllArgValues(OPT_fsanitize_blacklist); 1889} 1890 1891static void ParsePreprocessorArgs(PreprocessorOptions &Opts, ArgList &Args, 1892 FileManager &FileMgr, 1893 DiagnosticsEngine &Diags) { 1894 using namespace options; 1895 Opts.ImplicitPCHInclude = Args.getLastArgValue(OPT_include_pch); 1896 Opts.ImplicitPTHInclude = Args.getLastArgValue(OPT_include_pth); 1897 if (const Arg *A = Args.getLastArg(OPT_token_cache)) 1898 Opts.TokenCache = A->getValue(); 1899 else 1900 Opts.TokenCache = Opts.ImplicitPTHInclude; 1901 Opts.UsePredefines = !Args.hasArg(OPT_undef); 1902 Opts.DetailedRecord = Args.hasArg(OPT_detailed_preprocessing_record); 1903 Opts.DisablePCHValidation = Args.hasArg(OPT_fno_validate_pch); 1904 1905 Opts.DumpDeserializedPCHDecls = Args.hasArg(OPT_dump_deserialized_pch_decls); 1906 for (const Arg *A : Args.filtered(OPT_error_on_deserialized_pch_decl)) 1907 Opts.DeserializedPCHDeclsToErrorOn.insert(A->getValue()); 1908 1909 if (const Arg *A = Args.getLastArg(OPT_preamble_bytes_EQ)) { 1910 StringRef Value(A->getValue()); 1911 size_t Comma = Value.find(','); 1912 unsigned Bytes = 0; 1913 unsigned EndOfLine = 0; 1914 1915 if (Comma == StringRef::npos || 1916 Value.substr(0, Comma).getAsInteger(10, Bytes) || 1917 Value.substr(Comma + 1).getAsInteger(10, EndOfLine)) 1918 Diags.Report(diag::err_drv_preamble_format); 1919 else { 1920 Opts.PrecompiledPreambleBytes.first = Bytes; 1921 Opts.PrecompiledPreambleBytes.second = (EndOfLine != 0); 1922 } 1923 } 1924 1925 // Add macros from the command line. 1926 for (const Arg *A : Args.filtered(OPT_D, OPT_U)) { 1927 if (A->getOption().matches(OPT_D)) 1928 Opts.addMacroDef(A->getValue()); 1929 else 1930 Opts.addMacroUndef(A->getValue()); 1931 } 1932 1933 Opts.MacroIncludes = Args.getAllArgValues(OPT_imacros); 1934 1935 // Add the ordered list of -includes. 1936 for (const Arg *A : Args.filtered(OPT_include)) 1937 Opts.Includes.emplace_back(A->getValue()); 1938 1939 for (const Arg *A : Args.filtered(OPT_chain_include)) 1940 Opts.ChainedIncludes.emplace_back(A->getValue()); 1941 1942 // Include 'altivec.h' if -faltivec option present 1943 if (Args.hasArg(OPT_faltivec)) 1944 Opts.Includes.emplace_back("altivec.h"); 1945 1946 for (const Arg *A : Args.filtered(OPT_remap_file)) { 1947 std::pair<StringRef, StringRef> Split = StringRef(A->getValue()).split(';'); 1948 1949 if (Split.second.empty()) { 1950 Diags.Report(diag::err_drv_invalid_remap_file) << A->getAsString(Args); 1951 continue; 1952 } 1953 1954 Opts.addRemappedFile(Split.first, Split.second); 1955 } 1956 1957 if (Arg *A = Args.getLastArg(OPT_fobjc_arc_cxxlib_EQ)) { 1958 StringRef Name = A->getValue(); 1959 unsigned Library = llvm::StringSwitch<unsigned>(Name) 1960 .Case("libc++", ARCXX_libcxx) 1961 .Case("libstdc++", ARCXX_libstdcxx) 1962 .Case("none", ARCXX_nolib) 1963 .Default(~0U); 1964 if (Library == ~0U) 1965 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Name; 1966 else 1967 Opts.ObjCXXARCStandardLibrary = (ObjCXXARCStandardLibraryKind)Library; 1968 } 1969} 1970 1971static void ParsePreprocessorOutputArgs(PreprocessorOutputOptions &Opts, 1972 ArgList &Args, 1973 frontend::ActionKind Action) { 1974 using namespace options; 1975 1976 switch (Action) { 1977 case frontend::ASTDeclList: 1978 case frontend::ASTDump: 1979 case frontend::ASTPrint: 1980 case frontend::ASTView: 1981 case frontend::EmitAssembly: 1982 case frontend::EmitBC: 1983 case frontend::EmitHTML: 1984 case frontend::EmitLLVM: 1985 case frontend::EmitLLVMOnly: 1986 case frontend::EmitCodeGenOnly: 1987 case frontend::EmitObj: 1988 case frontend::FixIt: 1989 case frontend::GenerateModule: 1990 case frontend::GeneratePCH: 1991 case frontend::GeneratePTH: 1992 case frontend::ParseSyntaxOnly: 1993 case frontend::ModuleFileInfo: 1994 case frontend::VerifyPCH: 1995 case frontend::PluginAction: 1996 case frontend::PrintDeclContext: 1997 case frontend::RewriteObjC: 1998 case frontend::RewriteTest: 1999 case frontend::RunAnalysis: 2000 case frontend::MigrateSource: 2001 Opts.ShowCPP = 0; 2002 break; 2003 2004 case frontend::DumpRawTokens: 2005 case frontend::DumpTokens: 2006 case frontend::InitOnly: 2007 case frontend::PrintPreamble: 2008 case frontend::PrintPreprocessedInput: 2009 case frontend::RewriteMacros: 2010 case frontend::RunPreprocessorOnly: 2011 Opts.ShowCPP = !Args.hasArg(OPT_dM); 2012 break; 2013 } 2014 2015 Opts.ShowComments = Args.hasArg(OPT_C); 2016 Opts.ShowLineMarkers = !Args.hasArg(OPT_P); 2017 Opts.ShowMacroComments = Args.hasArg(OPT_CC); 2018 Opts.ShowMacros = Args.hasArg(OPT_dM) || Args.hasArg(OPT_dD); 2019 Opts.RewriteIncludes = Args.hasArg(OPT_frewrite_includes); 2020 Opts.UseLineDirectives = Args.hasArg(OPT_fuse_line_directives); 2021} 2022 2023static void ParseTargetArgs(TargetOptions &Opts, ArgList &Args) { 2024 using namespace options; 2025 Opts.ABI = Args.getLastArgValue(OPT_target_abi); 2026 Opts.CPU = Args.getLastArgValue(OPT_target_cpu); 2027 Opts.FPMath = Args.getLastArgValue(OPT_mfpmath); 2028 Opts.FeaturesAsWritten = Args.getAllArgValues(OPT_target_feature); 2029 Opts.LinkerVersion = Args.getLastArgValue(OPT_target_linker_version); 2030 Opts.Triple = llvm::Triple::normalize(Args.getLastArgValue(OPT_triple)); 2031 Opts.Reciprocals = Args.getAllArgValues(OPT_mrecip_EQ); 2032 // Use the default target triple if unspecified. 2033 if (Opts.Triple.empty()) 2034 Opts.Triple = llvm::sys::getDefaultTargetTriple(); 2035} 2036 2037bool CompilerInvocation::CreateFromArgs(CompilerInvocation &Res, 2038 const char *const *ArgBegin, 2039 const char *const *ArgEnd, 2040 DiagnosticsEngine &Diags) { 2041 bool Success = true; 2042 2043 // Parse the arguments. 2044 std::unique_ptr<OptTable> Opts(createDriverOptTable()); 2045 const unsigned IncludedFlagsBitmask = options::CC1Option; 2046 unsigned MissingArgIndex, MissingArgCount; 2047 InputArgList Args = 2048 Opts->ParseArgs(llvm::makeArrayRef(ArgBegin, ArgEnd), MissingArgIndex, 2049 MissingArgCount, IncludedFlagsBitmask); 2050 2051 // Check for missing argument error. 2052 if (MissingArgCount) { 2053 Diags.Report(diag::err_drv_missing_argument) 2054 << Args.getArgString(MissingArgIndex) << MissingArgCount; 2055 Success = false; 2056 } 2057 2058 // Issue errors on unknown arguments. 2059 for (const Arg *A : Args.filtered(OPT_UNKNOWN)) { 2060 Diags.Report(diag::err_drv_unknown_argument) << A->getAsString(Args); 2061 Success = false; 2062 } 2063 2064 Success &= ParseAnalyzerArgs(*Res.getAnalyzerOpts(), Args, Diags); 2065 Success &= ParseMigratorArgs(Res.getMigratorOpts(), Args); 2066 ParseDependencyOutputArgs(Res.getDependencyOutputOpts(), Args); 2067 Success &= ParseDiagnosticArgs(Res.getDiagnosticOpts(), Args, &Diags); 2068 ParseCommentArgs(Res.getLangOpts()->CommentOpts, Args); 2069 ParseFileSystemArgs(Res.getFileSystemOpts(), Args); 2070 // FIXME: We shouldn't have to pass the DashX option around here 2071 InputKind DashX = ParseFrontendArgs(Res.getFrontendOpts(), Args, Diags); 2072 ParseTargetArgs(Res.getTargetOpts(), Args); 2073 Success &= ParseCodeGenArgs(Res.getCodeGenOpts(), Args, DashX, Diags, 2074 Res.getTargetOpts()); 2075 ParseHeaderSearchArgs(Res.getHeaderSearchOpts(), Args); 2076 if (DashX == IK_AST || DashX == IK_LLVM_IR) { 2077 // ObjCAAutoRefCount and Sanitize LangOpts are used to setup the 2078 // PassManager in BackendUtil.cpp. They need to be initializd no matter 2079 // what the input type is. 2080 if (Args.hasArg(OPT_fobjc_arc)) 2081 Res.getLangOpts()->ObjCAutoRefCount = 1; 2082 parseSanitizerKinds("-fsanitize=", Args.getAllArgValues(OPT_fsanitize_EQ), 2083 Diags, Res.getLangOpts()->Sanitize); 2084 } else { 2085 // Other LangOpts are only initialzed when the input is not AST or LLVM IR. 2086 ParseLangArgs(*Res.getLangOpts(), Args, DashX, Diags); 2087 if (Res.getFrontendOpts().ProgramAction == frontend::RewriteObjC) 2088 Res.getLangOpts()->ObjCExceptions = 1; 2089 } 2090 // FIXME: ParsePreprocessorArgs uses the FileManager to read the contents of 2091 // PCH file and find the original header name. Remove the need to do that in 2092 // ParsePreprocessorArgs and remove the FileManager 2093 // parameters from the function and the "FileManager.h" #include. 2094 FileManager FileMgr(Res.getFileSystemOpts()); 2095 ParsePreprocessorArgs(Res.getPreprocessorOpts(), Args, FileMgr, Diags); 2096 ParsePreprocessorOutputArgs(Res.getPreprocessorOutputOpts(), Args, 2097 Res.getFrontendOpts().ProgramAction); 2098 return Success; 2099} 2100 2101namespace { 2102 2103 class ModuleSignature { 2104 SmallVector<uint64_t, 16> Data; 2105 unsigned CurBit; 2106 uint64_t CurValue; 2107 2108 public: 2109 ModuleSignature() : CurBit(0), CurValue(0) { } 2110 2111 void add(uint64_t Value, unsigned Bits); 2112 void add(StringRef Value); 2113 void flush(); 2114 2115 llvm::APInt getAsInteger() const; 2116 }; 2117} 2118 2119void ModuleSignature::add(uint64_t Value, unsigned int NumBits) { 2120 CurValue |= Value << CurBit; 2121 if (CurBit + NumBits < 64) { 2122 CurBit += NumBits; 2123 return; 2124 } 2125 2126 // Add the current word. 2127 Data.push_back(CurValue); 2128 2129 if (CurBit) 2130 CurValue = Value >> (64-CurBit); 2131 else 2132 CurValue = 0; 2133 CurBit = (CurBit+NumBits) & 63; 2134} 2135 2136void ModuleSignature::flush() { 2137 if (CurBit == 0) 2138 return; 2139 2140 Data.push_back(CurValue); 2141 CurBit = 0; 2142 CurValue = 0; 2143} 2144 2145void ModuleSignature::add(StringRef Value) { 2146 for (auto &c : Value) 2147 add(c, 8); 2148} 2149 2150llvm::APInt ModuleSignature::getAsInteger() const { 2151 return llvm::APInt(Data.size() * 64, Data); 2152} 2153 2154std::string CompilerInvocation::getModuleHash() const { 2155 // Note: For QoI reasons, the things we use as a hash here should all be 2156 // dumped via the -module-info flag. 2157 using llvm::hash_code; 2158 using llvm::hash_value; 2159 using llvm::hash_combine; 2160 2161 // Start the signature with the compiler version. 2162 // FIXME: We'd rather use something more cryptographically sound than 2163 // CityHash, but this will do for now. 2164 hash_code code = hash_value(getClangFullRepositoryVersion()); 2165 2166 // Extend the signature with the language options 2167#define LANGOPT(Name, Bits, Default, Description) \ 2168 code = hash_combine(code, LangOpts->Name); 2169#define ENUM_LANGOPT(Name, Type, Bits, Default, Description) \ 2170 code = hash_combine(code, static_cast<unsigned>(LangOpts->get##Name())); 2171#define BENIGN_LANGOPT(Name, Bits, Default, Description) 2172#define BENIGN_ENUM_LANGOPT(Name, Type, Bits, Default, Description) 2173#include "clang/Basic/LangOptions.def" 2174 2175 for (StringRef Feature : LangOpts->ModuleFeatures) 2176 code = hash_combine(code, Feature); 2177 2178 // Extend the signature with the target options. 2179 code = hash_combine(code, TargetOpts->Triple, TargetOpts->CPU, 2180 TargetOpts->ABI); 2181 for (unsigned i = 0, n = TargetOpts->FeaturesAsWritten.size(); i != n; ++i) 2182 code = hash_combine(code, TargetOpts->FeaturesAsWritten[i]); 2183 2184 // Extend the signature with preprocessor options. 2185 const PreprocessorOptions &ppOpts = getPreprocessorOpts(); 2186 const HeaderSearchOptions &hsOpts = getHeaderSearchOpts(); 2187 code = hash_combine(code, ppOpts.UsePredefines, ppOpts.DetailedRecord); 2188 2189 for (std::vector<std::pair<std::string, bool/*isUndef*/>>::const_iterator 2190 I = getPreprocessorOpts().Macros.begin(), 2191 IEnd = getPreprocessorOpts().Macros.end(); 2192 I != IEnd; ++I) { 2193 // If we're supposed to ignore this macro for the purposes of modules, 2194 // don't put it into the hash. 2195 if (!hsOpts.ModulesIgnoreMacros.empty()) { 2196 // Check whether we're ignoring this macro. 2197 StringRef MacroDef = I->first; 2198 if (hsOpts.ModulesIgnoreMacros.count(MacroDef.split('=').first)) 2199 continue; 2200 } 2201 2202 code = hash_combine(code, I->first, I->second); 2203 } 2204 2205 // Extend the signature with the sysroot and other header search options. 2206 code = hash_combine(code, hsOpts.Sysroot, 2207 hsOpts.ModuleFormat, 2208 hsOpts.UseDebugInfo, 2209 hsOpts.UseBuiltinIncludes, 2210 hsOpts.UseStandardSystemIncludes, 2211 hsOpts.UseStandardCXXIncludes, 2212 hsOpts.UseLibcxx); 2213 code = hash_combine(code, hsOpts.ResourceDir); 2214 2215 // Extend the signature with the user build path. 2216 code = hash_combine(code, hsOpts.ModuleUserBuildPath); 2217 2218 // Extend the signature with the module file extensions. 2219 const FrontendOptions &frontendOpts = getFrontendOpts(); 2220 for (auto ext : frontendOpts.ModuleFileExtensions) { 2221 code = ext->hashExtension(code); 2222 } 2223 2224 // Darwin-specific hack: if we have a sysroot, use the contents and 2225 // modification time of 2226 // $sysroot/System/Library/CoreServices/SystemVersion.plist 2227 // as part of the module hash. 2228 if (!hsOpts.Sysroot.empty()) { 2229 SmallString<128> systemVersionFile; 2230 systemVersionFile += hsOpts.Sysroot; 2231 llvm::sys::path::append(systemVersionFile, "System"); 2232 llvm::sys::path::append(systemVersionFile, "Library"); 2233 llvm::sys::path::append(systemVersionFile, "CoreServices"); 2234 llvm::sys::path::append(systemVersionFile, "SystemVersion.plist"); 2235 2236 llvm::ErrorOr<std::unique_ptr<llvm::MemoryBuffer>> buffer = 2237 llvm::MemoryBuffer::getFile(systemVersionFile); 2238 if (buffer) { 2239 code = hash_combine(code, buffer.get()->getBuffer()); 2240 2241 struct stat statBuf; 2242 if (stat(systemVersionFile.c_str(), &statBuf) == 0) 2243 code = hash_combine(code, statBuf.st_mtime); 2244 } 2245 } 2246 2247 return llvm::APInt(64, code).toString(36, /*Signed=*/false); 2248} 2249 2250namespace clang { 2251 2252template<typename IntTy> 2253static IntTy getLastArgIntValueImpl(const ArgList &Args, OptSpecifier Id, 2254 IntTy Default, 2255 DiagnosticsEngine *Diags) { 2256 IntTy Res = Default; 2257 if (Arg *A = Args.getLastArg(Id)) { 2258 if (StringRef(A->getValue()).getAsInteger(10, Res)) { 2259 if (Diags) 2260 Diags->Report(diag::err_drv_invalid_int_value) << A->getAsString(Args) 2261 << A->getValue(); 2262 } 2263 } 2264 return Res; 2265} 2266 2267 2268// Declared in clang/Frontend/Utils.h. 2269int getLastArgIntValue(const ArgList &Args, OptSpecifier Id, int Default, 2270 DiagnosticsEngine *Diags) { 2271 return getLastArgIntValueImpl<int>(Args, Id, Default, Diags); 2272} 2273 2274uint64_t getLastArgUInt64Value(const ArgList &Args, OptSpecifier Id, 2275 uint64_t Default, 2276 DiagnosticsEngine *Diags) { 2277 return getLastArgIntValueImpl<uint64_t>(Args, Id, Default, Diags); 2278} 2279 2280void BuryPointer(const void *Ptr) { 2281 // This function may be called only a small fixed amount of times per each 2282 // invocation, otherwise we do actually have a leak which we want to report. 2283 // If this function is called more than kGraveYardMaxSize times, the pointers 2284 // will not be properly buried and a leak detector will report a leak, which 2285 // is what we want in such case. 2286 static const size_t kGraveYardMaxSize = 16; 2287 LLVM_ATTRIBUTE_UNUSED static const void *GraveYard[kGraveYardMaxSize]; 2288 static std::atomic<unsigned> GraveYardSize; 2289 unsigned Idx = GraveYardSize++; 2290 if (Idx >= kGraveYardMaxSize) 2291 return; 2292 GraveYard[Idx] = Ptr; 2293} 2294 2295IntrusiveRefCntPtr<vfs::FileSystem> 2296createVFSFromCompilerInvocation(const CompilerInvocation &CI, 2297 DiagnosticsEngine &Diags) { 2298 if (CI.getHeaderSearchOpts().VFSOverlayFiles.empty()) 2299 return vfs::getRealFileSystem(); 2300 2301 IntrusiveRefCntPtr<vfs::OverlayFileSystem> 2302 Overlay(new vfs::OverlayFileSystem(vfs::getRealFileSystem())); 2303 // earlier vfs files are on the bottom 2304 for (const std::string &File : CI.getHeaderSearchOpts().VFSOverlayFiles) { 2305 llvm::ErrorOr<std::unique_ptr<llvm::MemoryBuffer>> Buffer = 2306 llvm::MemoryBuffer::getFile(File); 2307 if (!Buffer) { 2308 Diags.Report(diag::err_missing_vfs_overlay_file) << File; 2309 return IntrusiveRefCntPtr<vfs::FileSystem>(); 2310 } 2311 2312 IntrusiveRefCntPtr<vfs::FileSystem> FS = 2313 vfs::getVFSFromYAML(std::move(Buffer.get()), /*DiagHandler*/ nullptr); 2314 if (!FS.get()) { 2315 Diags.Report(diag::err_invalid_vfs_overlay) << File; 2316 return IntrusiveRefCntPtr<vfs::FileSystem>(); 2317 } 2318 Overlay->pushOverlay(FS); 2319 } 2320 return Overlay; 2321} 2322} // end namespace clang 2323