1 //===--- CompilerInstance.cpp ---------------------------------------------===// 2 // 3 // The LLVM Compiler Infrastructure 4 // 5 // This file is distributed under the University of Illinois Open Source 6 // License. See LICENSE.TXT for details. 7 // 8 //===----------------------------------------------------------------------===// 9 10 #include "clang/Frontend/CompilerInstance.h" 11 #include "clang/Sema/Sema.h" 12 #include "clang/AST/ASTConsumer.h" 13 #include "clang/AST/ASTContext.h" 14 #include "clang/Basic/Diagnostic.h" 15 #include "clang/Basic/FileManager.h" 16 #include "clang/Basic/SourceManager.h" 17 #include "clang/Basic/TargetInfo.h" 18 #include "clang/Basic/Version.h" 19 #include "clang/Lex/HeaderSearch.h" 20 #include "clang/Lex/Preprocessor.h" 21 #include "clang/Lex/PTHManager.h" 22 #include "clang/Frontend/ChainedDiagnosticClient.h" 23 #include "clang/Frontend/FrontendAction.h" 24 #include "clang/Frontend/FrontendDiagnostic.h" 25 #include "clang/Frontend/LogDiagnosticPrinter.h" 26 #include "clang/Frontend/TextDiagnosticPrinter.h" 27 #include "clang/Frontend/VerifyDiagnosticsClient.h" 28 #include "clang/Frontend/Utils.h" 29 #include "clang/Serialization/ASTReader.h" 30 #include "clang/Sema/CodeCompleteConsumer.h" 31 #include "llvm/Support/FileSystem.h" 32 #include "llvm/Support/MemoryBuffer.h" 33 #include "llvm/Support/raw_ostream.h" 34 #include "llvm/ADT/Statistic.h" 35 #include "llvm/Support/Timer.h" 36 #include "llvm/Support/Host.h" 37 #include "llvm/Support/Path.h" 38 #include "llvm/Support/Program.h" 39 #include "llvm/Support/Signals.h" 40 #include "llvm/Support/system_error.h" 41 #include "llvm/Config/config.h" 42 using namespace clang; 43 44 CompilerInstance::CompilerInstance() 45 : Invocation(new CompilerInvocation()), ModuleManager(0) { 46 } 47 48 CompilerInstance::~CompilerInstance() { 49 } 50 51 void CompilerInstance::setInvocation(CompilerInvocation *Value) { 52 Invocation = Value; 53 } 54 55 void CompilerInstance::setDiagnostics(Diagnostic *Value) { 56 Diagnostics = Value; 57 } 58 59 void CompilerInstance::setTarget(TargetInfo *Value) { 60 Target = Value; 61 } 62 63 void CompilerInstance::setFileManager(FileManager *Value) { 64 FileMgr = Value; 65 } 66 67 void CompilerInstance::setSourceManager(SourceManager *Value) { 68 SourceMgr = Value; 69 } 70 71 void CompilerInstance::setPreprocessor(Preprocessor *Value) { PP = Value; } 72 73 void CompilerInstance::setASTContext(ASTContext *Value) { Context = Value; } 74 75 void CompilerInstance::setSema(Sema *S) { 76 TheSema.reset(S); 77 } 78 79 void CompilerInstance::setASTConsumer(ASTConsumer *Value) { 80 Consumer.reset(Value); 81 } 82 83 void CompilerInstance::setCodeCompletionConsumer(CodeCompleteConsumer *Value) { 84 CompletionConsumer.reset(Value); 85 } 86 87 // Diagnostics 88 static void SetUpBuildDumpLog(const DiagnosticOptions &DiagOpts, 89 unsigned argc, const char* const *argv, 90 Diagnostic &Diags) { 91 std::string ErrorInfo; 92 llvm::OwningPtr<llvm::raw_ostream> OS( 93 new llvm::raw_fd_ostream(DiagOpts.DumpBuildInformation.c_str(), ErrorInfo)); 94 if (!ErrorInfo.empty()) { 95 Diags.Report(diag::err_fe_unable_to_open_logfile) 96 << DiagOpts.DumpBuildInformation << ErrorInfo; 97 return; 98 } 99 100 (*OS) << "clang -cc1 command line arguments: "; 101 for (unsigned i = 0; i != argc; ++i) 102 (*OS) << argv[i] << ' '; 103 (*OS) << '\n'; 104 105 // Chain in a diagnostic client which will log the diagnostics. 106 DiagnosticClient *Logger = 107 new TextDiagnosticPrinter(*OS.take(), DiagOpts, /*OwnsOutputStream=*/true); 108 Diags.setClient(new ChainedDiagnosticClient(Diags.takeClient(), Logger)); 109 } 110 111 static void SetUpDiagnosticLog(const DiagnosticOptions &DiagOpts, 112 const CodeGenOptions *CodeGenOpts, 113 Diagnostic &Diags) { 114 std::string ErrorInfo; 115 bool OwnsStream = false; 116 llvm::raw_ostream *OS = &llvm::errs(); 117 if (DiagOpts.DiagnosticLogFile != "-") { 118 // Create the output stream. 119 llvm::raw_fd_ostream *FileOS( 120 new llvm::raw_fd_ostream(DiagOpts.DiagnosticLogFile.c_str(), 121 ErrorInfo, llvm::raw_fd_ostream::F_Append)); 122 if (!ErrorInfo.empty()) { 123 Diags.Report(diag::warn_fe_cc_log_diagnostics_failure) 124 << DiagOpts.DumpBuildInformation << ErrorInfo; 125 } else { 126 FileOS->SetUnbuffered(); 127 FileOS->SetUseAtomicWrites(true); 128 OS = FileOS; 129 OwnsStream = true; 130 } 131 } 132 133 // Chain in the diagnostic client which will log the diagnostics. 134 LogDiagnosticPrinter *Logger = new LogDiagnosticPrinter(*OS, DiagOpts, 135 OwnsStream); 136 if (CodeGenOpts) 137 Logger->setDwarfDebugFlags(CodeGenOpts->DwarfDebugFlags); 138 Diags.setClient(new ChainedDiagnosticClient(Diags.takeClient(), Logger)); 139 } 140 141 void CompilerInstance::createDiagnostics(int Argc, const char* const *Argv, 142 DiagnosticClient *Client) { 143 Diagnostics = createDiagnostics(getDiagnosticOpts(), Argc, Argv, Client, 144 &getCodeGenOpts()); 145 } 146 147 llvm::IntrusiveRefCntPtr<Diagnostic> 148 CompilerInstance::createDiagnostics(const DiagnosticOptions &Opts, 149 int Argc, const char* const *Argv, 150 DiagnosticClient *Client, 151 const CodeGenOptions *CodeGenOpts) { 152 llvm::IntrusiveRefCntPtr<DiagnosticIDs> DiagID(new DiagnosticIDs()); 153 llvm::IntrusiveRefCntPtr<Diagnostic> Diags(new Diagnostic(DiagID)); 154 155 // Create the diagnostic client for reporting errors or for 156 // implementing -verify. 157 if (Client) 158 Diags->setClient(Client); 159 else 160 Diags->setClient(new TextDiagnosticPrinter(llvm::errs(), Opts)); 161 162 // Chain in -verify checker, if requested. 163 if (Opts.VerifyDiagnostics) 164 Diags->setClient(new VerifyDiagnosticsClient(*Diags, Diags->takeClient())); 165 166 // Chain in -diagnostic-log-file dumper, if requested. 167 if (!Opts.DiagnosticLogFile.empty()) 168 SetUpDiagnosticLog(Opts, CodeGenOpts, *Diags); 169 170 if (!Opts.DumpBuildInformation.empty()) 171 SetUpBuildDumpLog(Opts, Argc, Argv, *Diags); 172 173 // Configure our handling of diagnostics. 174 ProcessWarningOptions(*Diags, Opts); 175 176 return Diags; 177 } 178 179 // File Manager 180 181 void CompilerInstance::createFileManager() { 182 FileMgr = new FileManager(getFileSystemOpts()); 183 } 184 185 // Source Manager 186 187 void CompilerInstance::createSourceManager(FileManager &FileMgr) { 188 SourceMgr = new SourceManager(getDiagnostics(), FileMgr); 189 } 190 191 // Preprocessor 192 193 void CompilerInstance::createPreprocessor() { 194 PP = createPreprocessor(getDiagnostics(), getLangOpts(), 195 getPreprocessorOpts(), getHeaderSearchOpts(), 196 getDependencyOutputOpts(), getTarget(), 197 getFrontendOpts(), getSourceManager(), 198 getFileManager()); 199 } 200 201 Preprocessor * 202 CompilerInstance::createPreprocessor(Diagnostic &Diags, 203 const LangOptions &LangInfo, 204 const PreprocessorOptions &PPOpts, 205 const HeaderSearchOptions &HSOpts, 206 const DependencyOutputOptions &DepOpts, 207 const TargetInfo &Target, 208 const FrontendOptions &FEOpts, 209 SourceManager &SourceMgr, 210 FileManager &FileMgr) { 211 // Create a PTH manager if we are using some form of a token cache. 212 PTHManager *PTHMgr = 0; 213 if (!PPOpts.TokenCache.empty()) 214 PTHMgr = PTHManager::Create(PPOpts.TokenCache, Diags); 215 216 // Create the Preprocessor. 217 HeaderSearch *HeaderInfo = new HeaderSearch(FileMgr); 218 Preprocessor *PP = new Preprocessor(Diags, LangInfo, Target, 219 SourceMgr, *HeaderInfo, PTHMgr, 220 /*OwnsHeaderSearch=*/true); 221 222 // Note that this is different then passing PTHMgr to Preprocessor's ctor. 223 // That argument is used as the IdentifierInfoLookup argument to 224 // IdentifierTable's ctor. 225 if (PTHMgr) { 226 PTHMgr->setPreprocessor(PP); 227 PP->setPTHManager(PTHMgr); 228 } 229 230 if (PPOpts.DetailedRecord) 231 PP->createPreprocessingRecord( 232 PPOpts.DetailedRecordIncludesNestedMacroExpansions); 233 234 InitializePreprocessor(*PP, PPOpts, HSOpts, FEOpts); 235 236 // Handle generating dependencies, if requested. 237 if (!DepOpts.OutputFile.empty()) 238 AttachDependencyFileGen(*PP, DepOpts); 239 240 // Handle generating header include information, if requested. 241 if (DepOpts.ShowHeaderIncludes) 242 AttachHeaderIncludeGen(*PP); 243 if (!DepOpts.HeaderIncludeOutputFile.empty()) { 244 llvm::StringRef OutputPath = DepOpts.HeaderIncludeOutputFile; 245 if (OutputPath == "-") 246 OutputPath = ""; 247 AttachHeaderIncludeGen(*PP, /*ShowAllHeaders=*/true, OutputPath, 248 /*ShowDepth=*/false); 249 } 250 251 return PP; 252 } 253 254 // ASTContext 255 256 void CompilerInstance::createASTContext() { 257 Preprocessor &PP = getPreprocessor(); 258 Context = new ASTContext(getLangOpts(), PP.getSourceManager(), 259 getTarget(), PP.getIdentifierTable(), 260 PP.getSelectorTable(), PP.getBuiltinInfo(), 261 /*size_reserve=*/ 0); 262 } 263 264 // ExternalASTSource 265 266 void CompilerInstance::createPCHExternalASTSource(llvm::StringRef Path, 267 bool DisablePCHValidation, 268 bool DisableStatCache, 269 void *DeserializationListener){ 270 llvm::OwningPtr<ExternalASTSource> Source; 271 bool Preamble = getPreprocessorOpts().PrecompiledPreambleBytes.first != 0; 272 Source.reset(createPCHExternalASTSource(Path, getHeaderSearchOpts().Sysroot, 273 DisablePCHValidation, 274 DisableStatCache, 275 getPreprocessor(), getASTContext(), 276 DeserializationListener, 277 Preamble)); 278 ModuleManager = static_cast<ASTReader*>(Source.get()); 279 getASTContext().setExternalSource(Source); 280 } 281 282 ExternalASTSource * 283 CompilerInstance::createPCHExternalASTSource(llvm::StringRef Path, 284 const std::string &Sysroot, 285 bool DisablePCHValidation, 286 bool DisableStatCache, 287 Preprocessor &PP, 288 ASTContext &Context, 289 void *DeserializationListener, 290 bool Preamble) { 291 llvm::OwningPtr<ASTReader> Reader; 292 Reader.reset(new ASTReader(PP, &Context, 293 Sysroot.empty() ? "" : Sysroot.c_str(), 294 DisablePCHValidation, DisableStatCache)); 295 296 Reader->setDeserializationListener( 297 static_cast<ASTDeserializationListener *>(DeserializationListener)); 298 switch (Reader->ReadAST(Path, 299 Preamble ? serialization::MK_Preamble 300 : serialization::MK_PCH)) { 301 case ASTReader::Success: 302 // Set the predefines buffer as suggested by the PCH reader. Typically, the 303 // predefines buffer will be empty. 304 PP.setPredefines(Reader->getSuggestedPredefines()); 305 return Reader.take(); 306 307 case ASTReader::Failure: 308 // Unrecoverable failure: don't even try to process the input file. 309 break; 310 311 case ASTReader::IgnorePCH: 312 // No suitable PCH file could be found. Return an error. 313 break; 314 } 315 316 return 0; 317 } 318 319 // Code Completion 320 321 static bool EnableCodeCompletion(Preprocessor &PP, 322 const std::string &Filename, 323 unsigned Line, 324 unsigned Column) { 325 // Tell the source manager to chop off the given file at a specific 326 // line and column. 327 const FileEntry *Entry = PP.getFileManager().getFile(Filename); 328 if (!Entry) { 329 PP.getDiagnostics().Report(diag::err_fe_invalid_code_complete_file) 330 << Filename; 331 return true; 332 } 333 334 // Truncate the named file at the given line/column. 335 PP.SetCodeCompletionPoint(Entry, Line, Column); 336 return false; 337 } 338 339 void CompilerInstance::createCodeCompletionConsumer() { 340 const ParsedSourceLocation &Loc = getFrontendOpts().CodeCompletionAt; 341 if (!CompletionConsumer) { 342 CompletionConsumer.reset( 343 createCodeCompletionConsumer(getPreprocessor(), 344 Loc.FileName, Loc.Line, Loc.Column, 345 getFrontendOpts().ShowMacrosInCodeCompletion, 346 getFrontendOpts().ShowCodePatternsInCodeCompletion, 347 getFrontendOpts().ShowGlobalSymbolsInCodeCompletion, 348 llvm::outs())); 349 if (!CompletionConsumer) 350 return; 351 } else if (EnableCodeCompletion(getPreprocessor(), Loc.FileName, 352 Loc.Line, Loc.Column)) { 353 CompletionConsumer.reset(); 354 return; 355 } 356 357 if (CompletionConsumer->isOutputBinary() && 358 llvm::sys::Program::ChangeStdoutToBinary()) { 359 getPreprocessor().getDiagnostics().Report(diag::err_fe_stdout_binary); 360 CompletionConsumer.reset(); 361 } 362 } 363 364 void CompilerInstance::createFrontendTimer() { 365 FrontendTimer.reset(new llvm::Timer("Clang front-end timer")); 366 } 367 368 CodeCompleteConsumer * 369 CompilerInstance::createCodeCompletionConsumer(Preprocessor &PP, 370 const std::string &Filename, 371 unsigned Line, 372 unsigned Column, 373 bool ShowMacros, 374 bool ShowCodePatterns, 375 bool ShowGlobals, 376 llvm::raw_ostream &OS) { 377 if (EnableCodeCompletion(PP, Filename, Line, Column)) 378 return 0; 379 380 // Set up the creation routine for code-completion. 381 return new PrintingCodeCompleteConsumer(ShowMacros, ShowCodePatterns, 382 ShowGlobals, OS); 383 } 384 385 void CompilerInstance::createSema(bool CompleteTranslationUnit, 386 CodeCompleteConsumer *CompletionConsumer) { 387 TheSema.reset(new Sema(getPreprocessor(), getASTContext(), getASTConsumer(), 388 CompleteTranslationUnit, CompletionConsumer)); 389 } 390 391 // Output Files 392 393 void CompilerInstance::addOutputFile(const OutputFile &OutFile) { 394 assert(OutFile.OS && "Attempt to add empty stream to output list!"); 395 OutputFiles.push_back(OutFile); 396 } 397 398 void CompilerInstance::clearOutputFiles(bool EraseFiles) { 399 for (std::list<OutputFile>::iterator 400 it = OutputFiles.begin(), ie = OutputFiles.end(); it != ie; ++it) { 401 delete it->OS; 402 if (!it->TempFilename.empty()) { 403 if (EraseFiles) { 404 bool existed; 405 llvm::sys::fs::remove(it->TempFilename, existed); 406 } else { 407 llvm::SmallString<128> NewOutFile(it->Filename); 408 409 // If '-working-directory' was passed, the output filename should be 410 // relative to that. 411 FileMgr->FixupRelativePath(NewOutFile); 412 if (llvm::error_code ec = llvm::sys::fs::rename(it->TempFilename, 413 NewOutFile.str())) { 414 getDiagnostics().Report(diag::err_fe_unable_to_rename_temp) 415 << it->TempFilename << it->Filename << ec.message(); 416 417 bool existed; 418 llvm::sys::fs::remove(it->TempFilename, existed); 419 } 420 } 421 } else if (!it->Filename.empty() && EraseFiles) 422 llvm::sys::Path(it->Filename).eraseFromDisk(); 423 424 } 425 OutputFiles.clear(); 426 } 427 428 llvm::raw_fd_ostream * 429 CompilerInstance::createDefaultOutputFile(bool Binary, 430 llvm::StringRef InFile, 431 llvm::StringRef Extension) { 432 return createOutputFile(getFrontendOpts().OutputFile, Binary, 433 /*RemoveFileOnSignal=*/true, InFile, Extension); 434 } 435 436 llvm::raw_fd_ostream * 437 CompilerInstance::createOutputFile(llvm::StringRef OutputPath, 438 bool Binary, bool RemoveFileOnSignal, 439 llvm::StringRef InFile, 440 llvm::StringRef Extension) { 441 std::string Error, OutputPathName, TempPathName; 442 llvm::raw_fd_ostream *OS = createOutputFile(OutputPath, Error, Binary, 443 RemoveFileOnSignal, 444 InFile, Extension, 445 &OutputPathName, 446 &TempPathName); 447 if (!OS) { 448 getDiagnostics().Report(diag::err_fe_unable_to_open_output) 449 << OutputPath << Error; 450 return 0; 451 } 452 453 // Add the output file -- but don't try to remove "-", since this means we are 454 // using stdin. 455 addOutputFile(OutputFile((OutputPathName != "-") ? OutputPathName : "", 456 TempPathName, OS)); 457 458 return OS; 459 } 460 461 llvm::raw_fd_ostream * 462 CompilerInstance::createOutputFile(llvm::StringRef OutputPath, 463 std::string &Error, 464 bool Binary, 465 bool RemoveFileOnSignal, 466 llvm::StringRef InFile, 467 llvm::StringRef Extension, 468 std::string *ResultPathName, 469 std::string *TempPathName) { 470 std::string OutFile, TempFile; 471 if (!OutputPath.empty()) { 472 OutFile = OutputPath; 473 } else if (InFile == "-") { 474 OutFile = "-"; 475 } else if (!Extension.empty()) { 476 llvm::sys::Path Path(InFile); 477 Path.eraseSuffix(); 478 Path.appendSuffix(Extension); 479 OutFile = Path.str(); 480 } else { 481 OutFile = "-"; 482 } 483 484 if (OutFile != "-") { 485 llvm::sys::Path OutPath(OutFile); 486 // Only create the temporary if we can actually write to OutPath, otherwise 487 // we want to fail early. 488 bool Exists; 489 if ((llvm::sys::fs::exists(OutPath.str(), Exists) || !Exists) || 490 (OutPath.isRegularFile() && OutPath.canWrite())) { 491 // Create a temporary file. 492 llvm::sys::Path TempPath(OutFile); 493 if (!TempPath.makeUnique(/*reuse_current=*/false, /*ErrMsg*/0)) 494 TempFile = TempPath.str(); 495 } 496 } 497 498 std::string OSFile = OutFile; 499 if (!TempFile.empty()) 500 OSFile = TempFile; 501 502 llvm::OwningPtr<llvm::raw_fd_ostream> OS( 503 new llvm::raw_fd_ostream(OSFile.c_str(), Error, 504 (Binary ? llvm::raw_fd_ostream::F_Binary : 0))); 505 if (!Error.empty()) 506 return 0; 507 508 // Make sure the out stream file gets removed if we crash. 509 if (RemoveFileOnSignal) 510 llvm::sys::RemoveFileOnSignal(llvm::sys::Path(OSFile)); 511 512 if (ResultPathName) 513 *ResultPathName = OutFile; 514 if (TempPathName) 515 *TempPathName = TempFile; 516 517 return OS.take(); 518 } 519 520 // Initialization Utilities 521 522 bool CompilerInstance::InitializeSourceManager(llvm::StringRef InputFile) { 523 return InitializeSourceManager(InputFile, getDiagnostics(), getFileManager(), 524 getSourceManager(), getFrontendOpts()); 525 } 526 527 bool CompilerInstance::InitializeSourceManager(llvm::StringRef InputFile, 528 Diagnostic &Diags, 529 FileManager &FileMgr, 530 SourceManager &SourceMgr, 531 const FrontendOptions &Opts) { 532 // Figure out where to get and map in the main file, unless it's already 533 // been created (e.g., by a precompiled preamble). 534 if (!SourceMgr.getMainFileID().isInvalid()) { 535 // Do nothing: the main file has already been set. 536 } else if (InputFile != "-") { 537 const FileEntry *File = FileMgr.getFile(InputFile); 538 if (!File) { 539 Diags.Report(diag::err_fe_error_reading) << InputFile; 540 return false; 541 } 542 SourceMgr.createMainFileID(File); 543 } else { 544 llvm::OwningPtr<llvm::MemoryBuffer> SB; 545 if (llvm::MemoryBuffer::getSTDIN(SB)) { 546 // FIXME: Give ec.message() in this diag. 547 Diags.Report(diag::err_fe_error_reading_stdin); 548 return false; 549 } 550 const FileEntry *File = FileMgr.getVirtualFile(SB->getBufferIdentifier(), 551 SB->getBufferSize(), 0); 552 SourceMgr.createMainFileID(File); 553 SourceMgr.overrideFileContents(File, SB.take()); 554 } 555 556 assert(!SourceMgr.getMainFileID().isInvalid() && 557 "Couldn't establish MainFileID!"); 558 return true; 559 } 560 561 // High-Level Operations 562 563 bool CompilerInstance::ExecuteAction(FrontendAction &Act) { 564 assert(hasDiagnostics() && "Diagnostics engine is not initialized!"); 565 assert(!getFrontendOpts().ShowHelp && "Client must handle '-help'!"); 566 assert(!getFrontendOpts().ShowVersion && "Client must handle '-version'!"); 567 568 // FIXME: Take this as an argument, once all the APIs we used have moved to 569 // taking it as an input instead of hard-coding llvm::errs. 570 llvm::raw_ostream &OS = llvm::errs(); 571 572 // Create the target instance. 573 setTarget(TargetInfo::CreateTargetInfo(getDiagnostics(), getTargetOpts())); 574 if (!hasTarget()) 575 return false; 576 577 // Inform the target of the language options. 578 // 579 // FIXME: We shouldn't need to do this, the target should be immutable once 580 // created. This complexity should be lifted elsewhere. 581 getTarget().setForcedLangOptions(getLangOpts()); 582 583 // Validate/process some options. 584 if (getHeaderSearchOpts().Verbose) 585 OS << "clang -cc1 version " CLANG_VERSION_STRING 586 << " based upon " << PACKAGE_STRING 587 << " hosted on " << llvm::sys::getHostTriple() << "\n"; 588 589 if (getFrontendOpts().ShowTimers) 590 createFrontendTimer(); 591 592 if (getFrontendOpts().ShowStats) 593 llvm::EnableStatistics(); 594 595 for (unsigned i = 0, e = getFrontendOpts().Inputs.size(); i != e; ++i) { 596 const std::string &InFile = getFrontendOpts().Inputs[i].second; 597 598 // Reset the ID tables if we are reusing the SourceManager. 599 if (hasSourceManager()) 600 getSourceManager().clearIDTables(); 601 602 if (Act.BeginSourceFile(*this, InFile, getFrontendOpts().Inputs[i].first)) { 603 Act.Execute(); 604 Act.EndSourceFile(); 605 } 606 } 607 608 if (getDiagnosticOpts().ShowCarets) { 609 // We can have multiple diagnostics sharing one diagnostic client. 610 // Get the total number of warnings/errors from the client. 611 unsigned NumWarnings = getDiagnostics().getClient()->getNumWarnings(); 612 unsigned NumErrors = getDiagnostics().getClient()->getNumErrors(); 613 614 if (NumWarnings) 615 OS << NumWarnings << " warning" << (NumWarnings == 1 ? "" : "s"); 616 if (NumWarnings && NumErrors) 617 OS << " and "; 618 if (NumErrors) 619 OS << NumErrors << " error" << (NumErrors == 1 ? "" : "s"); 620 if (NumWarnings || NumErrors) 621 OS << " generated.\n"; 622 } 623 624 if (getFrontendOpts().ShowStats && hasFileManager()) { 625 getFileManager().PrintStats(); 626 OS << "\n"; 627 } 628 629 return !getDiagnostics().getClient()->getNumErrors(); 630 } 631 632 633