[C++11] Add 'override' keyword to virtual methods that override their base class.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@203758 91177308-0d34-0410-b5e6-96231b3b80d8

include/clang/Driver/Job.h

@@ -76,8 +76,8 @@ public:
   Command(const Action &_Source, const Tool &_Creator, const char *_Executable,
           const llvm::opt::ArgStringList &_Arguments);
 
-  virtual void Print(llvm::raw_ostream &OS, const char *Terminator,
-                     bool Quote, bool CrashReport = false) const;
+  void Print(llvm::raw_ostream &OS, const char *Terminator, bool Quote,
+             bool CrashReport = false) const override;
 
   virtual int Execute(const StringRef **Redirects, std::string *ErrMsg,
                       bool *ExecutionFailed) const;
@@ -106,11 +106,11 @@ public:
                   const char *Executable_, const ArgStringList &Arguments_,
                   Command *Fallback_);
 
-  virtual void Print(llvm::raw_ostream &OS, const char *Terminator,
-                     bool Quote, bool CrashReport = false) const;
+  void Print(llvm::raw_ostream &OS, const char *Terminator, bool Quote,
+             bool CrashReport = false) const override;
 
-  virtual int Execute(const StringRef **Redirects, std::string *ErrMsg,
-                      bool *ExecutionFailed) const;
+  int Execute(const StringRef **Redirects, std::string *ErrMsg,
+              bool *ExecutionFailed) const override;
 
   static bool classof(const Job *J) {
     return J->getKind() == FallbackCommandClass;
@@ -135,8 +135,8 @@ public:
   JobList();
   virtual ~JobList();
 
-  virtual void Print(llvm::raw_ostream &OS, const char *Terminator,
-                     bool Quote, bool CrashReport = false) const;
+  void Print(llvm::raw_ostream &OS, const char *Terminator,
+             bool Quote, bool CrashReport = false) const override;
 
   /// Add a job to the list (taking ownership).
   void addJob(Job *J) { Jobs.push_back(J); }

include/clang/Frontend/ASTUnit.h

@@ -858,19 +858,16 @@ public:
   ///
   /// \returns True if an error occurred, false otherwise.
   bool serialize(raw_ostream &OS);
-  
-  virtual ModuleLoadResult loadModule(SourceLocation ImportLoc,
-                                      ModuleIdPath Path,
-                                      Module::NameVisibilityKind Visibility,
-                                      bool IsInclusionDirective) {
+
+  ModuleLoadResult loadModule(SourceLocation ImportLoc, ModuleIdPath Path,
+                              Module::NameVisibilityKind Visibility,
+                              bool IsInclusionDirective) override {
     // ASTUnit doesn't know how to load modules (not that this matters).
     return ModuleLoadResult();
   }
 
-  virtual void makeModuleVisible(Module *Mod,
-                                 Module::NameVisibilityKind Visibility,
-                                 SourceLocation ImportLoc,
-                                 bool Complain) { }
+  void makeModuleVisible(Module *Mod, Module::NameVisibilityKind Visibility,
+                         SourceLocation ImportLoc, bool Complain) override {}
 
 };
 

include/clang/Frontend/ChainedDiagnosticConsumer.h

@@ -32,28 +32,28 @@ public:
     Secondary.reset(_Secondary);
   }
 
-  virtual void BeginSourceFile(const LangOptions &LO,
-                               const Preprocessor *PP) {
+  void BeginSourceFile(const LangOptions &LO,
+                       const Preprocessor *PP) override {
     Primary->BeginSourceFile(LO, PP);
     Secondary->BeginSourceFile(LO, PP);
   }
 
-  virtual void EndSourceFile() {
+  void EndSourceFile() override {
     Secondary->EndSourceFile();
     Primary->EndSourceFile();
   }
 
-  virtual void finish() {
+  void finish() override {
     Secondary->finish();
     Primary->finish();
   }
 
-  virtual bool IncludeInDiagnosticCounts() const {
+  bool IncludeInDiagnosticCounts() const override {
     return Primary->IncludeInDiagnosticCounts();
   }
 
-  virtual void HandleDiagnostic(DiagnosticsEngine::Level DiagLevel,
-                                const Diagnostic &Info) {
+  void HandleDiagnostic(DiagnosticsEngine::Level DiagLevel,
+                        const Diagnostic &Info) override {
     // Default implementation (Warnings/errors count).
     DiagnosticConsumer::HandleDiagnostic(DiagLevel, Info);
 

include/clang/Frontend/ChainedIncludesSource.h

@@ -39,35 +39,35 @@ protected:
 // ExternalASTSource interface.
 //===----------------------------------------------------------------------===//
 
-  virtual Decl *GetExternalDecl(uint32_t ID);
-  virtual Selector GetExternalSelector(uint32_t ID);
-  virtual uint32_t GetNumExternalSelectors();
-  virtual Stmt *GetExternalDeclStmt(uint64_t Offset);
-  virtual CXXBaseSpecifier *GetExternalCXXBaseSpecifiers(uint64_t Offset);
-  virtual bool FindExternalVisibleDeclsByName(const DeclContext *DC,
-                                              DeclarationName Name);
-  virtual ExternalLoadResult FindExternalLexicalDecls(const DeclContext *DC,
-                                        bool (*isKindWeWant)(Decl::Kind),
-                                        SmallVectorImpl<Decl*> &Result);
-  virtual void CompleteType(TagDecl *Tag);
-  virtual void CompleteType(ObjCInterfaceDecl *Class);
-  virtual void StartedDeserializing();
-  virtual void FinishedDeserializing();
-  virtual void StartTranslationUnit(ASTConsumer *Consumer);
-  virtual void PrintStats();
+  Decl *GetExternalDecl(uint32_t ID) override;
+  Selector GetExternalSelector(uint32_t ID) override;
+  uint32_t GetNumExternalSelectors() override;
+  Stmt *GetExternalDeclStmt(uint64_t Offset) override;
+  CXXBaseSpecifier *GetExternalCXXBaseSpecifiers(uint64_t Offset) override;
+  bool FindExternalVisibleDeclsByName(const DeclContext *DC,
+                                      DeclarationName Name) override;
+  ExternalLoadResult FindExternalLexicalDecls(const DeclContext *DC,
+                                bool (*isKindWeWant)(Decl::Kind),
+                                SmallVectorImpl<Decl*> &Result) override;
+  void CompleteType(TagDecl *Tag) override;
+  void CompleteType(ObjCInterfaceDecl *Class) override;
+  void StartedDeserializing() override;
+  void FinishedDeserializing() override;
+  void StartTranslationUnit(ASTConsumer *Consumer) override;
+  void PrintStats() override;
 
   /// Return the amount of memory used by memory buffers, breaking down
   /// by heap-backed versus mmap'ed memory.
-  virtual void getMemoryBufferSizes(MemoryBufferSizes &sizes) const;
+  void getMemoryBufferSizes(MemoryBufferSizes &sizes) const override;
 
 //===----------------------------------------------------------------------===//
 // ExternalSemaSource interface.
 //===----------------------------------------------------------------------===//
 
-  virtual void InitializeSema(Sema &S);
-  virtual void ForgetSema();
-  virtual void ReadMethodPool(Selector Sel);
-  virtual bool LookupUnqualified(LookupResult &R, Scope *S);
+  void InitializeSema(Sema &S) override;
+  void ForgetSema() override;
+  void ReadMethodPool(Selector Sel) override;
+  bool LookupUnqualified(LookupResult &R, Scope *S) override;
 };
 
 }

include/clang/Frontend/CompilerInstance.h

@@ -682,16 +682,13 @@ public:
                 const FrontendOptions &Opts);
 
   /// }
-  
-  virtual ModuleLoadResult loadModule(SourceLocation ImportLoc,
-                                      ModuleIdPath Path,
-                                      Module::NameVisibilityKind Visibility,
-                                      bool IsInclusionDirective);
-
-  virtual void makeModuleVisible(Module *Mod,
-                                 Module::NameVisibilityKind Visibility,
-                                 SourceLocation ImportLoc,
-                                 bool Complain);
+
+  ModuleLoadResult loadModule(SourceLocation ImportLoc, ModuleIdPath Path,
+                              Module::NameVisibilityKind Visibility,
+                              bool IsInclusionDirective) override;
+
+  void makeModuleVisible(Module *Mod, Module::NameVisibilityKind Visibility,
+                         SourceLocation ImportLoc, bool Complain) override;
 
   bool hadModuleLoaderFatalFailure() const {
     return ModuleLoader::HadFatalFailure;

include/clang/Frontend/DiagnosticRenderer.h

@@ -158,20 +158,19 @@ public:
     : DiagnosticRenderer(LangOpts, DiagOpts) {}
   
   virtual ~DiagnosticNoteRenderer();
-  
-  virtual void emitBasicNote(StringRef Message);
-    
-  virtual void emitIncludeLocation(SourceLocation Loc,
-                                   PresumedLoc PLoc,
-                                   const SourceManager &SM);
 
-  virtual void emitImportLocation(SourceLocation Loc, PresumedLoc PLoc,
-                                  StringRef ModuleName,
-                                  const SourceManager &SM);
+  void emitBasicNote(StringRef Message) override;
 
-  virtual void emitBuildingModuleLocation(SourceLocation Loc, PresumedLoc PLoc,
-                                          StringRef ModuleName,
-                                          const SourceManager &SM);
+  void emitIncludeLocation(SourceLocation Loc, PresumedLoc PLoc,
+                           const SourceManager &SM) override;
+
+  void emitImportLocation(SourceLocation Loc, PresumedLoc PLoc,
+                          StringRef ModuleName,
+                          const SourceManager &SM) override;
+
+  void emitBuildingModuleLocation(SourceLocation Loc, PresumedLoc PLoc,
+                                  StringRef ModuleName,
+                                  const SourceManager &SM) override;
 
   virtual void emitNote(SourceLocation Loc, StringRef Message,
                         const SourceManager *SM) = 0;

include/clang/Frontend/FrontendAction.h

@@ -218,17 +218,17 @@ protected:
   ///
   /// This will also take care of instantiating a code completion consumer if
   /// the user requested it and the action supports it.
-  virtual void ExecuteAction();
+  void ExecuteAction() override;
 
 public:
-  virtual bool usesPreprocessorOnly() const { return false; }
+  bool usesPreprocessorOnly() const override { return false; }
 };
 
 class PluginASTAction : public ASTFrontendAction {
   virtual void anchor();
 protected:
-  virtual ASTConsumer *CreateASTConsumer(CompilerInstance &CI,
-                                         StringRef InFile) = 0;
+  ASTConsumer *CreateASTConsumer(CompilerInstance &CI,
+                                 StringRef InFile) override = 0;
 
 public:
   /// \brief Parse the given plugin command line arguments.
@@ -246,11 +246,11 @@ class PreprocessorFrontendAction : public FrontendAction {
 protected:
   /// \brief Provide a default implementation which returns aborts;
   /// this method should never be called by FrontendAction clients.
-  virtual ASTConsumer *CreateASTConsumer(CompilerInstance &CI,
-                                         StringRef InFile);
+  ASTConsumer *CreateASTConsumer(CompilerInstance &CI,
+                                 StringRef InFile) override;
 
 public:
-  virtual bool usesPreprocessorOnly() const { return true; }
+  bool usesPreprocessorOnly() const override { return true; }
 };
 
 /// \brief A frontend action which simply wraps some other runtime-specified
@@ -263,25 +263,24 @@ class WrapperFrontendAction : public FrontendAction {
   std::unique_ptr<FrontendAction> WrappedAction;
 
 protected:
-  virtual ASTConsumer *CreateASTConsumer(CompilerInstance &CI,
-                                         StringRef InFile);
-  virtual bool BeginInvocation(CompilerInstance &CI);
-  virtual bool BeginSourceFileAction(CompilerInstance &CI,
-                                     StringRef Filename);
-  virtual void ExecuteAction();
-  virtual void EndSourceFileAction();
+  ASTConsumer *CreateASTConsumer(CompilerInstance &CI,
+                                 StringRef InFile) override;
+  bool BeginInvocation(CompilerInstance &CI) override;
+  bool BeginSourceFileAction(CompilerInstance &CI, StringRef Filename) override;
+  void ExecuteAction() override;
+  void EndSourceFileAction() override;
 
 public:
   /// Construct a WrapperFrontendAction from an existing action, taking
   /// ownership of it.
   WrapperFrontendAction(FrontendAction *WrappedAction);
 
-  virtual bool usesPreprocessorOnly() const;
-  virtual TranslationUnitKind getTranslationUnitKind();
-  virtual bool hasPCHSupport() const;
-  virtual bool hasASTFileSupport() const;
-  virtual bool hasIRSupport() const;
-  virtual bool hasCodeCompletionSupport() const;
+  bool usesPreprocessorOnly() const override;
+  TranslationUnitKind getTranslationUnitKind() override;
+  bool hasPCHSupport() const override;
+  bool hasASTFileSupport() const override;
+  bool hasIRSupport() const override;
+  bool hasCodeCompletionSupport() const override;
 };
 
 }  // end namespace clang

include/clang/Frontend/FrontendActions.h

@@ -23,15 +23,15 @@ class Module;
 //===----------------------------------------------------------------------===//
 
 class InitOnlyAction : public FrontendAction {
-  virtual void ExecuteAction();
+  void ExecuteAction() override;
 
-  virtual ASTConsumer *CreateASTConsumer(CompilerInstance &CI,
-                                         StringRef InFile);
+  ASTConsumer *CreateASTConsumer(CompilerInstance &CI,
+                                 StringRef InFile) override;
 
 public:
   // Don't claim to only use the preprocessor, we want to follow the AST path,
   // but do nothing.
-  virtual bool usesPreprocessorOnly() const { return false; }
+  bool usesPreprocessorOnly() const override { return false; }
 };
 
 //===----------------------------------------------------------------------===//
@@ -40,44 +40,44 @@ public:
 
 class ASTPrintAction : public ASTFrontendAction {
 protected:
-  virtual ASTConsumer *CreateASTConsumer(CompilerInstance &CI,
-                                         StringRef InFile);
+  ASTConsumer *CreateASTConsumer(CompilerInstance &CI,
+                                 StringRef InFile) override;
 };
 
 class ASTDumpAction : public ASTFrontendAction {
 protected:
-  virtual ASTConsumer *CreateASTConsumer(CompilerInstance &CI,
-                                         StringRef InFile);
+  ASTConsumer *CreateASTConsumer(CompilerInstance &CI,
+                                 StringRef InFile) override;
 };
 
 class ASTDeclListAction : public ASTFrontendAction {
 protected:
-  virtual ASTConsumer *CreateASTConsumer(CompilerInstance &CI,
-                                         StringRef InFile);
+  ASTConsumer *CreateASTConsumer(CompilerInstance &CI,
+                                 StringRef InFile) override;
 };
 
 class ASTViewAction : public ASTFrontendAction {
 protected:
-  virtual ASTConsumer *CreateASTConsumer(CompilerInstance &CI,
-                                         StringRef InFile);
+  ASTConsumer *CreateASTConsumer(CompilerInstance &CI,
+                                 StringRef InFile) override;
 };
 
 class DeclContextPrintAction : public ASTFrontendAction {
 protected:
-  virtual ASTConsumer *CreateASTConsumer(CompilerInstance &CI,
-                                         StringRef InFile);
+  ASTConsumer *CreateASTConsumer(CompilerInstance &CI,
+                                 StringRef InFile) override;
 };
 
 class GeneratePCHAction : public ASTFrontendAction {
 protected:
-  virtual ASTConsumer *CreateASTConsumer(CompilerInstance &CI,
-                                         StringRef InFile);
+  ASTConsumer *CreateASTConsumer(CompilerInstance &CI,
+                                 StringRef InFile) override;
 
-  virtual TranslationUnitKind getTranslationUnitKind() {
+  TranslationUnitKind getTranslationUnitKind() override {
     return TU_Prefix;
   }
 
-  virtual bool hasASTFileSupport() const { return false; }
+  bool hasASTFileSupport() const override { return false; }
 
 public:
   /// \brief Compute the AST consumer arguments that will be used to
@@ -96,21 +96,21 @@ class GenerateModuleAction : public ASTFrontendAction {
   bool IsSystem;
   
 protected:
-  virtual ASTConsumer *CreateASTConsumer(CompilerInstance &CI,
-                                         StringRef InFile);
-  
-  virtual TranslationUnitKind getTranslationUnitKind() { 
+  ASTConsumer *CreateASTConsumer(CompilerInstance &CI,
+                                 StringRef InFile) override;
+
+  TranslationUnitKind getTranslationUnitKind() override {
     return TU_Module;
   }
-  
-  virtual bool hasASTFileSupport() const { return false; }
-  
+
+  bool hasASTFileSupport() const override { return false; }
+
 public:
   explicit GenerateModuleAction(bool IsSystem = false)
     : ASTFrontendAction(), IsSystem(IsSystem) { }
 
-  virtual bool BeginSourceFileAction(CompilerInstance &CI, StringRef Filename);
-  
+  bool BeginSourceFileAction(CompilerInstance &CI, StringRef Filename) override;
+
   /// \brief Compute the AST consumer arguments that will be used to
   /// create the PCHGenerator instance returned by CreateASTConsumer.
   ///
@@ -124,37 +124,37 @@ public:
 
 class SyntaxOnlyAction : public ASTFrontendAction {
 protected:
-  virtual ASTConsumer *CreateASTConsumer(CompilerInstance &CI,
-                                         StringRef InFile);
+  ASTConsumer *CreateASTConsumer(CompilerInstance &CI,
+                                         StringRef InFile) override;
 
 public:
-  virtual bool hasCodeCompletionSupport() const { return true; }
+  bool hasCodeCompletionSupport() const override { return true; }
 };
 
 /// \brief Dump information about the given module file, to be used for
 /// basic debugging and discovery.
 class DumpModuleInfoAction : public ASTFrontendAction {
 protected:
-  virtual ASTConsumer *CreateASTConsumer(CompilerInstance &CI,
-                                         StringRef InFile);
-  virtual void ExecuteAction();
-  
+  ASTConsumer *CreateASTConsumer(CompilerInstance &CI,
+                                 StringRef InFile) override;
+  void ExecuteAction() override;
+
 public:
-  virtual bool hasPCHSupport() const { return false; }
-  virtual bool hasASTFileSupport() const { return true; }
-  virtual bool hasIRSupport() const { return false; }
-  virtual bool hasCodeCompletionSupport() const { return false; }
+  bool hasPCHSupport() const override { return false; }
+  bool hasASTFileSupport() const override { return true; }
+  bool hasIRSupport() const override { return false; }
+  bool hasCodeCompletionSupport() const override { return false; }
 };
 
 class VerifyPCHAction : public ASTFrontendAction {
 protected:
-  virtual ASTConsumer *CreateASTConsumer(CompilerInstance &CI,
-                                         StringRef InFile);
+  ASTConsumer *CreateASTConsumer(CompilerInstance &CI,
+                                 StringRef InFile) override;
 
-  virtual void ExecuteAction();
+  void ExecuteAction() override;
 
 public:
-  virtual bool hasCodeCompletionSupport() const { return false; }
+  bool hasCodeCompletionSupport() const override { return false; }
 };
 
 /**
@@ -173,34 +173,34 @@ class ASTMergeAction : public FrontendAction {
   std::vector<std::string> ASTFiles;
 
 protected:
-  virtual ASTConsumer *CreateASTConsumer(CompilerInstance &CI,
-                                         StringRef InFile);
+  ASTConsumer *CreateASTConsumer(CompilerInstance &CI,
+                                 StringRef InFile) override;
 
-  virtual bool BeginSourceFileAction(CompilerInstance &CI,
-                                     StringRef Filename);
+  bool BeginSourceFileAction(CompilerInstance &CI,
+                             StringRef Filename) override;
 
-  virtual void ExecuteAction();
-  virtual void EndSourceFileAction();
+  void ExecuteAction() override;
+  void EndSourceFileAction() override;
 
 public:
   ASTMergeAction(FrontendAction *AdaptedAction, ArrayRef<std::string> ASTFiles);
   virtual ~ASTMergeAction();
 
-  virtual bool usesPreprocessorOnly() const;
-  virtual TranslationUnitKind getTranslationUnitKind();
-  virtual bool hasPCHSupport() const;
-  virtual bool hasASTFileSupport() const;
-  virtual bool hasCodeCompletionSupport() const;
+  bool usesPreprocessorOnly() const override;
+  TranslationUnitKind getTranslationUnitKind() override;
+  bool hasPCHSupport() const override;
+  bool hasASTFileSupport() const override;
+  bool hasCodeCompletionSupport() const override;
 };
 
 class PrintPreambleAction : public FrontendAction {
 protected:
-  void ExecuteAction();
-  virtual ASTConsumer *CreateASTConsumer(CompilerInstance &, StringRef) { 
-    return 0; 
+  void ExecuteAction() override;
+  ASTConsumer *CreateASTConsumer(CompilerInstance &, StringRef) override {
+    return 0;
   }
-  
-  virtual bool usesPreprocessorOnly() const { return true; }
+
+  bool usesPreprocessorOnly() const override { return true; }
 };
   
 //===----------------------------------------------------------------------===//
@@ -209,29 +209,29 @@ protected:
 
 class DumpRawTokensAction : public PreprocessorFrontendAction {
 protected:
-  void ExecuteAction();
+  void ExecuteAction() override;
 };
 
 class DumpTokensAction : public PreprocessorFrontendAction {
 protected:
-  void ExecuteAction();
+  void ExecuteAction() override;
 };
 
 class GeneratePTHAction : public PreprocessorFrontendAction {
 protected:
-  void ExecuteAction();
+  void ExecuteAction() override;
 };
 
 class PreprocessOnlyAction : public PreprocessorFrontendAction {
 protected:
-  void ExecuteAction();
+  void ExecuteAction() override;
 };
 
 class PrintPreprocessedAction : public PreprocessorFrontendAction {
 protected:
-  void ExecuteAction();
+  void ExecuteAction() override;
 
-  virtual bool hasPCHSupport() const { return true; }
+  bool hasPCHSupport() const override { return true; }
 };
   
 }  // end namespace clang

include/clang/Frontend/LayoutOverrideSource.h

@@ -47,12 +47,13 @@ namespace clang {
     
     /// \brief If this particular record type has an overridden layout,
     /// return that layout.
-    virtual bool 
+    bool
     layoutRecordType(const RecordDecl *Record,
        uint64_t &Size, uint64_t &Alignment,
        llvm::DenseMap<const FieldDecl *, uint64_t> &FieldOffsets,
        llvm::DenseMap<const CXXRecordDecl *, CharUnits> &BaseOffsets,
-       llvm::DenseMap<const CXXRecordDecl *, CharUnits> &VirtualBaseOffsets);
+       llvm::DenseMap<const CXXRecordDecl *,
+                      CharUnits> &VirtualBaseOffsets) override;
     
     /// \brief Dump the overridden layouts.
     void dump();

include/clang/Frontend/LogDiagnosticPrinter.h

@@ -62,14 +62,14 @@ public:
     DwarfDebugFlags = Value;
   }
 
-  void BeginSourceFile(const LangOptions &LO, const Preprocessor *PP) {
+  void BeginSourceFile(const LangOptions &LO, const Preprocessor *PP) override {
     LangOpts = &LO;
   }
 
-  void EndSourceFile();
+  void EndSourceFile() override;
 
-  virtual void HandleDiagnostic(DiagnosticsEngine::Level DiagLevel,
-                                const Diagnostic &Info);
+  void HandleDiagnostic(DiagnosticsEngine::Level DiagLevel,
+                        const Diagnostic &Info) override;
 };
 
 } // end namespace clang

include/clang/Frontend/MultiplexConsumer.h

@@ -33,23 +33,23 @@ public:
   ~MultiplexConsumer();
 
   // ASTConsumer
-  virtual void Initialize(ASTContext &Context);
-  virtual void HandleCXXStaticMemberVarInstantiation(VarDecl *VD);
-  virtual bool HandleTopLevelDecl(DeclGroupRef D);
-  virtual void HandleInterestingDecl(DeclGroupRef D);
-  virtual void HandleTranslationUnit(ASTContext &Ctx);
-  virtual void HandleTagDeclDefinition(TagDecl *D);
-  virtual void HandleCXXImplicitFunctionInstantiation(FunctionDecl *D);
-  virtual void HandleTopLevelDeclInObjCContainer(DeclGroupRef D);
-  virtual void CompleteTentativeDefinition(VarDecl *D);
-  virtual void HandleVTable(CXXRecordDecl *RD, bool DefinitionRequired);
-  virtual ASTMutationListener *GetASTMutationListener();
-  virtual ASTDeserializationListener *GetASTDeserializationListener();
-  virtual void PrintStats();
+  void Initialize(ASTContext &Context) override;
+  void HandleCXXStaticMemberVarInstantiation(VarDecl *VD) override;
+  bool HandleTopLevelDecl(DeclGroupRef D) override;
+  void HandleInterestingDecl(DeclGroupRef D) override;
+  void HandleTranslationUnit(ASTContext &Ctx) override;
+  void HandleTagDeclDefinition(TagDecl *D) override;
+  void HandleCXXImplicitFunctionInstantiation(FunctionDecl *D) override;
+  void HandleTopLevelDeclInObjCContainer(DeclGroupRef D) override;
+  void CompleteTentativeDefinition(VarDecl *D) override;
+  void HandleVTable(CXXRecordDecl *RD, bool DefinitionRequired) override;
+  ASTMutationListener *GetASTMutationListener() override;
+  ASTDeserializationListener *GetASTDeserializationListener() override;
+  void PrintStats() override;
 
   // SemaConsumer
-  virtual void InitializeSema(Sema &S);
-  virtual void ForgetSema();
+  void InitializeSema(Sema &S) override;
+  void ForgetSema() override;
 
 private:
   std::vector<ASTConsumer*> Consumers;  // Owns these.

include/clang/Frontend/TextDiagnostic.h

@@ -77,38 +77,38 @@ public:
                                      bool ShowColors);
 
 protected:
-  virtual void emitDiagnosticMessage(SourceLocation Loc,PresumedLoc PLoc,
-                                     DiagnosticsEngine::Level Level,
-                                     StringRef Message,
-                                     ArrayRef<CharSourceRange> Ranges,
-                                     const SourceManager *SM,
-                                     DiagOrStoredDiag D);
-
-  virtual void emitDiagnosticLoc(SourceLocation Loc, PresumedLoc PLoc,
-                                 DiagnosticsEngine::Level Level,
-                                 ArrayRef<CharSourceRange> Ranges,
-                                 const SourceManager &SM);
-  
-  virtual void emitCodeContext(SourceLocation Loc,
-                               DiagnosticsEngine::Level Level,
-                               SmallVectorImpl<CharSourceRange>& Ranges,
-                               ArrayRef<FixItHint> Hints,
-                               const SourceManager &SM) {
+  void emitDiagnosticMessage(SourceLocation Loc,PresumedLoc PLoc,
+                             DiagnosticsEngine::Level Level,
+                             StringRef Message,
+                             ArrayRef<CharSourceRange> Ranges,
+                             const SourceManager *SM,
+                             DiagOrStoredDiag D) override;
+
+  void emitDiagnosticLoc(SourceLocation Loc, PresumedLoc PLoc,
+                         DiagnosticsEngine::Level Level,
+                         ArrayRef<CharSourceRange> Ranges,
+                         const SourceManager &SM) override;
+
+  void emitCodeContext(SourceLocation Loc,
+                       DiagnosticsEngine::Level Level,
+                       SmallVectorImpl<CharSourceRange>& Ranges,
+                       ArrayRef<FixItHint> Hints,
+                       const SourceManager &SM) override {
     emitSnippetAndCaret(Loc, Level, Ranges, Hints, SM);
   }
-  
-  virtual void emitBasicNote(StringRef Message);
-  
-  virtual void emitIncludeLocation(SourceLocation Loc, PresumedLoc PLoc,
-                                   const SourceManager &SM);
 
-  virtual void emitImportLocation(SourceLocation Loc, PresumedLoc PLoc,
-                                  StringRef ModuleName,
-                                  const SourceManager &SM);
+  void emitBasicNote(StringRef Message) override;
+
+  void emitIncludeLocation(SourceLocation Loc, PresumedLoc PLoc,
+                           const SourceManager &SM) override;
 
-  virtual void emitBuildingModuleLocation(SourceLocation Loc, PresumedLoc PLoc,
-                                          StringRef ModuleName,
-                                          const SourceManager &SM);
+  void emitImportLocation(SourceLocation Loc, PresumedLoc PLoc,
+                          StringRef ModuleName,
+                          const SourceManager &SM) override;
+
+  void emitBuildingModuleLocation(SourceLocation Loc, PresumedLoc PLoc,
+                                  StringRef ModuleName,
+                                  const SourceManager &SM) override;
 
 private:
   void emitSnippetAndCaret(SourceLocation Loc, DiagnosticsEngine::Level Level,

include/clang/Frontend/TextDiagnosticBuffer.h

@@ -39,8 +39,8 @@ public:
   const_iterator note_begin() const { return Notes.begin(); }
   const_iterator note_end() const   { return Notes.end(); }
 
-  virtual void HandleDiagnostic(DiagnosticsEngine::Level DiagLevel,
-                                const Diagnostic &Info);
+  void HandleDiagnostic(DiagnosticsEngine::Level DiagLevel,
+                        const Diagnostic &Info) override;
 
   /// FlushDiagnostics - Flush the buffered diagnostics to an given
   /// diagnostic engine.

include/clang/Frontend/TextDiagnosticPrinter.h

@@ -47,9 +47,10 @@ public:
   /// used.
   void setPrefix(std::string Value) { Prefix = Value; }
 
-  void BeginSourceFile(const LangOptions &LO, const Preprocessor *PP);
-  void EndSourceFile();
-  void HandleDiagnostic(DiagnosticsEngine::Level Level, const Diagnostic &Info);
+  void BeginSourceFile(const LangOptions &LO, const Preprocessor *PP) override;
+  void EndSourceFile() override;
+  void HandleDiagnostic(DiagnosticsEngine::Level Level,
+                        const Diagnostic &Info) override;
 };
 
 } // end namespace clang

include/clang/Frontend/VerifyDiagnosticConsumer.h

@@ -239,10 +239,10 @@ public:
   VerifyDiagnosticConsumer(DiagnosticsEngine &Diags);
   ~VerifyDiagnosticConsumer();
 
-  virtual void BeginSourceFile(const LangOptions &LangOpts,
-                               const Preprocessor *PP);
+  void BeginSourceFile(const LangOptions &LangOpts,
+                       const Preprocessor *PP) override;
 
-  virtual void EndSourceFile();
+  void EndSourceFile() override;
 
   enum ParsedStatus {
     /// File has been processed via HandleComment.
@@ -258,10 +258,10 @@ public:
   /// \brief Update lists of parsed and unparsed files.
   void UpdateParsedFileStatus(SourceManager &SM, FileID FID, ParsedStatus PS);
 
-  virtual bool HandleComment(Preprocessor &PP, SourceRange Comment);
+  bool HandleComment(Preprocessor &PP, SourceRange Comment) override;
 
-  virtual void HandleDiagnostic(DiagnosticsEngine::Level DiagLevel,
-                                const Diagnostic &Info);
+  void HandleDiagnostic(DiagnosticsEngine::Level DiagLevel,
+                        const Diagnostic &Info) override;
 };
 
 } // end namspace clang

lib/Frontend/ASTConsumers.cpp

@@ -41,7 +41,7 @@ namespace {
         : Out(Out ? *Out : llvm::outs()), Dump(Dump),
           FilterString(FilterString), DumpLookups(DumpLookups) {}
 
-    virtual void HandleTranslationUnit(ASTContext &Context) {
+    void HandleTranslationUnit(ASTContext &Context) override {
       TranslationUnitDecl *D = Context.getTranslationUnitDecl();
 
       if (FilterString.empty())
@@ -101,7 +101,7 @@ namespace {
     ASTDeclNodeLister(raw_ostream *Out = NULL)
         : Out(Out ? *Out : llvm::outs()) {}
 
-    virtual void HandleTranslationUnit(ASTContext &Context) {
+    void HandleTranslationUnit(ASTContext &Context) override {
       TraverseDecl(Context.getTranslationUnitDecl());
     }
 
@@ -138,11 +138,11 @@ namespace {
   class ASTViewer : public ASTConsumer {
     ASTContext *Context;
   public:
-    void Initialize(ASTContext &Context) {
+    void Initialize(ASTContext &Context) override {
       this->Context = &Context;
     }
 
-    virtual bool HandleTopLevelDecl(DeclGroupRef D) {
+    bool HandleTopLevelDecl(DeclGroupRef D) override {
       for (DeclGroupRef::iterator I = D.begin(), E = D.end(); I != E; ++I)
         HandleTopLevelSingleDecl(*I);
       return true;
@@ -177,7 +177,7 @@ class DeclContextPrinter : public ASTConsumer {
 public:
   DeclContextPrinter() : Out(llvm::errs()) {}
 
-  void HandleTranslationUnit(ASTContext &C) {
+  void HandleTranslationUnit(ASTContext &C) override {
     PrintDeclContext(C.getTranslationUnitDecl(), 4);
   }
 

lib/Frontend/ASTUnit.cpp

@@ -519,8 +519,8 @@ public:
       Counter(Counter),
       InitializedLanguage(false) {}
 
-  virtual bool ReadLanguageOptions(const LangOptions &LangOpts,
-                                   bool Complain) {
+  bool ReadLanguageOptions(const LangOptions &LangOpts,
+                           bool Complain) override {
     if (InitializedLanguage)
       return false;
     
@@ -531,8 +531,8 @@ public:
     return false;
   }
 
-  virtual bool ReadTargetOptions(const TargetOptions &TargetOpts,
-                                 bool Complain) {
+  bool ReadTargetOptions(const TargetOptions &TargetOpts,
+                         bool Complain) override {
     // If we've already initialized the target, don't do it again.
     if (Target)
       return false;
@@ -545,7 +545,8 @@ public:
     return false;
   }
 
-  virtual void ReadCounter(const serialization::ModuleFile &M, unsigned Value) {
+  void ReadCounter(const serialization::ModuleFile &M,
+                   unsigned Value) override {
     Counter = Value;
   }
 
@@ -583,14 +584,14 @@ public:
                           SmallVectorImpl<StoredDiagnostic> &StoredDiags)
     : StoredDiags(StoredDiags), SourceMgr(0) { }
 
-  virtual void BeginSourceFile(const LangOptions &LangOpts,
-                               const Preprocessor *PP = 0) {
+  void BeginSourceFile(const LangOptions &LangOpts,
+                       const Preprocessor *PP = 0) override {
     if (PP)
       SourceMgr = &PP->getSourceManager();
   }
 
-  virtual void HandleDiagnostic(DiagnosticsEngine::Level Level,
-                                const Diagnostic &Info);
+  void HandleDiagnostic(DiagnosticsEngine::Level Level,
+                        const Diagnostic &Info) override;
 };
 
 /// \brief RAII object that optionally captures diagnostics, if
@@ -793,9 +794,9 @@ class MacroDefinitionTrackerPPCallbacks : public PPCallbacks {
   
 public:
   explicit MacroDefinitionTrackerPPCallbacks(unsigned &Hash) : Hash(Hash) { }
-  
-  virtual void MacroDefined(const Token &MacroNameTok,
-                            const MacroDirective *MD) {
+
+  void MacroDefined(const Token &MacroNameTok,
+                    const MacroDirective *MD) override {
     Hash = llvm::HashString(MacroNameTok.getIdentifierInfo()->getName(), Hash);
   }
 };
@@ -877,25 +878,25 @@ public:
     }
   }
 
-  bool HandleTopLevelDecl(DeclGroupRef D) {
+  bool HandleTopLevelDecl(DeclGroupRef D) override {
     for (DeclGroupRef::iterator it = D.begin(), ie = D.end(); it != ie; ++it)
       handleTopLevelDecl(*it);
     return true;
   }
 
   // We're not interested in "interesting" decls.
-  void HandleInterestingDecl(DeclGroupRef) {}
+  void HandleInterestingDecl(DeclGroupRef) override {}
 
-  void HandleTopLevelDeclInObjCContainer(DeclGroupRef D) {
+  void HandleTopLevelDeclInObjCContainer(DeclGroupRef D) override {
     for (DeclGroupRef::iterator it = D.begin(), ie = D.end(); it != ie; ++it)
       handleTopLevelDecl(*it);
   }
 
-  virtual ASTMutationListener *GetASTMutationListener() {
+  ASTMutationListener *GetASTMutationListener() override {
     return Unit.getASTMutationListener();
   }
 
-  virtual ASTDeserializationListener *GetASTDeserializationListener() {
+  ASTDeserializationListener *GetASTDeserializationListener() override {
     return Unit.getDeserializationListener();
   }
 };
@@ -904,8 +905,8 @@ class TopLevelDeclTrackerAction : public ASTFrontendAction {
 public:
   ASTUnit &Unit;
 
-  virtual ASTConsumer *CreateASTConsumer(CompilerInstance &CI,
-                                         StringRef InFile) {
+  ASTConsumer *CreateASTConsumer(CompilerInstance &CI,
+                                 StringRef InFile) override {
     CI.getPreprocessor().addPPCallbacks(
      new MacroDefinitionTrackerPPCallbacks(Unit.getCurrentTopLevelHashValue()));
     return new TopLevelDeclTrackerConsumer(Unit, 
@@ -915,8 +916,8 @@ public:
 public:
   TopLevelDeclTrackerAction(ASTUnit &_Unit) : Unit(_Unit) {}
 
-  virtual bool hasCodeCompletionSupport() const { return false; }
-  virtual TranslationUnitKind getTranslationUnitKind()  { 
+  bool hasCodeCompletionSupport() const override { return false; }
+  TranslationUnitKind getTranslationUnitKind() override {
     return Unit.getTranslationUnitKind(); 
   }
 };
@@ -929,15 +930,15 @@ public:
   explicit PrecompilePreambleAction(ASTUnit &Unit)
       : Unit(Unit), HasEmittedPreamblePCH(false) {}
 
-  virtual ASTConsumer *CreateASTConsumer(CompilerInstance &CI,
-                                         StringRef InFile);
+  ASTConsumer *CreateASTConsumer(CompilerInstance &CI,
+                                 StringRef InFile) override;
   bool hasEmittedPreamblePCH() const { return HasEmittedPreamblePCH; }
   void setHasEmittedPreamblePCH() { HasEmittedPreamblePCH = true; }
-  virtual bool shouldEraseOutputFiles() { return !hasEmittedPreamblePCH(); }
+  bool shouldEraseOutputFiles() override { return !hasEmittedPreamblePCH(); }
 
-  virtual bool hasCodeCompletionSupport() const { return false; }
-  virtual bool hasASTFileSupport() const { return false; }
-  virtual TranslationUnitKind getTranslationUnitKind() { return TU_Prefix; }
+  bool hasCodeCompletionSupport() const override { return false; }
+  bool hasASTFileSupport() const override { return false; }
+  TranslationUnitKind getTranslationUnitKind() override { return TU_Prefix; }
 };
 
 class PrecompilePreambleConsumer : public PCHGenerator {
@@ -955,7 +956,7 @@ public:
     Hash = 0;
   }
 
-  virtual bool HandleTopLevelDecl(DeclGroupRef D) {
+  bool HandleTopLevelDecl(DeclGroupRef D) override {
     for (DeclGroupRef::iterator it = D.begin(), ie = D.end(); it != ie; ++it) {
       Decl *D = *it;
       // FIXME: Currently ObjC method declarations are incorrectly being
@@ -970,7 +971,7 @@ public:
     return true;
   }
 
-  virtual void HandleTranslationUnit(ASTContext &Ctx) {
+  void HandleTranslationUnit(ASTContext &Ctx) override {
     PCHGenerator::HandleTranslationUnit(Ctx);
     if (hasEmittedPCH()) {
       // Translate the top-level declarations we captured during
@@ -2141,23 +2142,22 @@ namespace {
                        |  (1LL << CodeCompletionContext::CCC_UnionTag)
                        |  (1LL << CodeCompletionContext::CCC_ClassOrStructTag);
     }
-    
-    virtual void ProcessCodeCompleteResults(Sema &S, 
-                                            CodeCompletionContext Context,
-                                            CodeCompletionResult *Results,
-                                            unsigned NumResults);
-    
-    virtual void ProcessOverloadCandidates(Sema &S, unsigned CurrentArg,
-                                           OverloadCandidate *Candidates,
-                                           unsigned NumCandidates) { 
+
+    void ProcessCodeCompleteResults(Sema &S, CodeCompletionContext Context,
+                                    CodeCompletionResult *Results,
+                                    unsigned NumResults) override;
+
+    void ProcessOverloadCandidates(Sema &S, unsigned CurrentArg,
+                                   OverloadCandidate *Candidates,
+                                   unsigned NumCandidates) override {
       Next.ProcessOverloadCandidates(S, CurrentArg, Candidates, NumCandidates);
     }
-    
-    virtual CodeCompletionAllocator &getAllocator() {
+
+    CodeCompletionAllocator &getAllocator() override {
       return Next.getAllocator();
     }
 
-    virtual CodeCompletionTUInfo &getCodeCompletionTUInfo() {
+    CodeCompletionTUInfo &getCodeCompletionTUInfo() override {
       return Next.getCodeCompletionTUInfo();
     }
   };

lib/Frontend/CacheTokens.cpp

@@ -516,7 +516,7 @@ public:
   ~StatListener() {}
 
   LookupResult getStat(const char *Path, FileData &Data, bool isFile,
-                       vfs::File **F, vfs::FileSystem &FS) {
+                       vfs::File **F, vfs::FileSystem &FS) override {
     LookupResult Result = statChained(Path, Data, isFile, F, FS);
 
     if (Result == CacheMissing) // Failed 'stat'.

lib/Frontend/DependencyFile.cpp

@@ -53,20 +53,16 @@ public:
       AddMissingHeaderDeps(Opts.AddMissingHeaderDeps),
       SeenMissingHeader(false) {}
 
-  virtual void FileChanged(SourceLocation Loc, FileChangeReason Reason,
-                           SrcMgr::CharacteristicKind FileType,
-                           FileID PrevFID);
-  virtual void InclusionDirective(SourceLocation HashLoc,
-                                  const Token &IncludeTok,
-                                  StringRef FileName,
-                                  bool IsAngled,
-                                  CharSourceRange FilenameRange,
-                                  const FileEntry *File,
-                                  StringRef SearchPath,
-                                  StringRef RelativePath,
-                                  const Module *Imported);
-
-  virtual void EndOfMainFile() {
+  void FileChanged(SourceLocation Loc, FileChangeReason Reason,
+                   SrcMgr::CharacteristicKind FileType,
+                   FileID PrevFID) override;
+  void InclusionDirective(SourceLocation HashLoc, const Token &IncludeTok,
+                          StringRef FileName, bool IsAngled,
+                          CharSourceRange FilenameRange, const FileEntry *File,
+                          StringRef SearchPath, StringRef RelativePath,
+                          const Module *Imported) override;
+
+  void EndOfMainFile() override {
     OutputDependencyFile();
   }
 
@@ -79,11 +75,11 @@ class DFGASTReaderListener : public ASTReaderListener {
 public:
   DFGASTReaderListener(DFGImpl &Parent)
   : Parent(Parent) { }
-  virtual bool needsInputFileVisitation() { return true; }
-  virtual bool needsSystemInputFileVisitation() {
+  bool needsInputFileVisitation() override { return true; }
+  bool needsSystemInputFileVisitation() override {
     return Parent.includeSystemHeaders();
   }
-  virtual bool visitInputFile(StringRef Filename, bool isSystem);
+  bool visitInputFile(StringRef Filename, bool isSystem) override;
 };
 }
 

lib/Frontend/DependencyGraph.cpp

@@ -46,17 +46,13 @@ public:
                           StringRef SysRoot)
     : PP(_PP), OutputFile(OutputFile.str()), SysRoot(SysRoot.str()) { }
 
-  virtual void InclusionDirective(SourceLocation HashLoc,
-                                  const Token &IncludeTok,
-                                  StringRef FileName,
-                                  bool IsAngled,
-                                  CharSourceRange FilenameRange,
-                                  const FileEntry *File,
-                                  StringRef SearchPath,
-                                  StringRef RelativePath,
-                                  const Module *Imported);
+  void InclusionDirective(SourceLocation HashLoc, const Token &IncludeTok,
+                          StringRef FileName, bool IsAngled,
+                          CharSourceRange FilenameRange, const FileEntry *File,
+                          StringRef SearchPath, StringRef RelativePath,
+                          const Module *Imported) override;
 
-  virtual void EndOfMainFile() {
+  void EndOfMainFile() override {
     OutputGraphFile();
   }
   

lib/Frontend/DiagnosticRenderer.cpp

@@ -79,10 +79,10 @@ class FixitReceiver : public edit::EditsReceiver {
 public:
   FixitReceiver(SmallVectorImpl<FixItHint> &MergedFixits)
     : MergedFixits(MergedFixits) { }
-  virtual void insert(SourceLocation loc, StringRef text) {
+  void insert(SourceLocation loc, StringRef text) override {
     MergedFixits.push_back(FixItHint::CreateInsertion(loc, text));
   }
-  virtual void replace(CharSourceRange range, StringRef text) {
+  void replace(CharSourceRange range, StringRef text) override {
     MergedFixits.push_back(FixItHint::CreateReplacement(range, text));
   }
 };

lib/Frontend/FrontendAction.cpp

@@ -43,29 +43,29 @@ public:
                                            ASTDeserializationListener *Previous)
     : Previous(Previous) { }
 
-  virtual void ReaderInitialized(ASTReader *Reader) {
+  void ReaderInitialized(ASTReader *Reader) override {
     if (Previous)
       Previous->ReaderInitialized(Reader);
   }
-  virtual void IdentifierRead(serialization::IdentID ID,
-                              IdentifierInfo *II) {
+  void IdentifierRead(serialization::IdentID ID,
+                      IdentifierInfo *II) override {
     if (Previous)
       Previous->IdentifierRead(ID, II);
   }
-  virtual void TypeRead(serialization::TypeIdx Idx, QualType T) {
+  void TypeRead(serialization::TypeIdx Idx, QualType T) override {
     if (Previous)
       Previous->TypeRead(Idx, T);
   }
-  virtual void DeclRead(serialization::DeclID ID, const Decl *D) {
+  void DeclRead(serialization::DeclID ID, const Decl *D) override {
     if (Previous)
       Previous->DeclRead(ID, D);
   }
-  virtual void SelectorRead(serialization::SelectorID ID, Selector Sel) {
+  void SelectorRead(serialization::SelectorID ID, Selector Sel) override {
     if (Previous)
       Previous->SelectorRead(ID, Sel);
   }
-  virtual void MacroDefinitionRead(serialization::PreprocessedEntityID PPID, 
-                                   MacroDefinition *MD) {
+  void MacroDefinitionRead(serialization::PreprocessedEntityID PPID,
+                           MacroDefinition *MD) override {
     if (Previous)
       Previous->MacroDefinitionRead(PPID, MD);
   }
@@ -77,7 +77,7 @@ public:
   explicit DeserializedDeclsDumper(ASTDeserializationListener *Previous)
     : DelegatingDeserializationListener(Previous) { }
 
-  virtual void DeclRead(serialization::DeclID ID, const Decl *D) {
+  void DeclRead(serialization::DeclID ID, const Decl *D) override {
     llvm::outs() << "PCH DECL: " << D->getDeclKindName();
     if (const NamedDecl *ND = dyn_cast<NamedDecl>(D))
       llvm::outs() << " - " << *ND;
@@ -100,7 +100,7 @@ public:
     : DelegatingDeserializationListener(Previous),
       Ctx(Ctx), NamesToCheck(NamesToCheck) { }
 
-  virtual void DeclRead(serialization::DeclID ID, const Decl *D) {
+  void DeclRead(serialization::DeclID ID, const Decl *D) override {
     if (const NamedDecl *ND = dyn_cast<NamedDecl>(D))
       if (NamesToCheck.find(ND->getNameAsString()) != NamesToCheck.end()) {
         unsigned DiagID

lib/Frontend/FrontendActions.cpp

@@ -403,7 +403,7 @@ namespace {
 #define DUMP_BOOLEAN(Value, Text)                       \
     Out.indent(4) << Text << ": " << (Value? "Yes" : "No") << "\n"
 
-    virtual bool ReadFullVersionInformation(StringRef FullVersion) {
+    bool ReadFullVersionInformation(StringRef FullVersion) override {
       Out.indent(2)
         << "Generated by "
         << (FullVersion == getClangFullRepositoryVersion()? "this"
@@ -412,8 +412,8 @@ namespace {
       return ASTReaderListener::ReadFullVersionInformation(FullVersion);
     }
 
-    virtual bool ReadLanguageOptions(const LangOptions &LangOpts,
-                                     bool Complain) {
+    bool ReadLanguageOptions(const LangOptions &LangOpts,
+                             bool Complain) override {
       Out.indent(2) << "Language options:\n";
 #define LANGOPT(Name, Bits, Default, Description) \
       DUMP_BOOLEAN(LangOpts.Name, Description);
@@ -428,8 +428,8 @@ namespace {
       return false;
     }
 
-    virtual bool ReadTargetOptions(const TargetOptions &TargetOpts,
-                                   bool Complain) {
+    bool ReadTargetOptions(const TargetOptions &TargetOpts,
+                           bool Complain) override {
       Out.indent(2) << "Target options:\n";
       Out.indent(4) << "  Triple: " << TargetOpts.Triple << "\n";
       Out.indent(4) << "  CPU: " << TargetOpts.CPU << "\n";
@@ -447,8 +447,8 @@ namespace {
       return false;
     }
 
-    virtual bool ReadHeaderSearchOptions(const HeaderSearchOptions &HSOpts,
-                                         bool Complain) {
+    bool ReadHeaderSearchOptions(const HeaderSearchOptions &HSOpts,
+                                 bool Complain) override {
       Out.indent(2) << "Header search options:\n";
       Out.indent(4) << "System root [-isysroot=]: '" << HSOpts.Sysroot << "'\n";
       DUMP_BOOLEAN(HSOpts.UseBuiltinIncludes,
@@ -462,9 +462,9 @@ namespace {
       return false;
     }
 
-    virtual bool ReadPreprocessorOptions(const PreprocessorOptions &PPOpts,
-                                         bool Complain,
-                                         std::string &SuggestedPredefines) {
+    bool ReadPreprocessorOptions(const PreprocessorOptions &PPOpts,
+                                 bool Complain,
+                                 std::string &SuggestedPredefines) override {
       Out.indent(2) << "Preprocessor options:\n";
       DUMP_BOOLEAN(PPOpts.UsePredefines,
                    "Uses compiler/target-specific predefines [-undef]");

lib/Frontend/HeaderIncludeGen.cpp

@@ -40,9 +40,9 @@ public:
       delete OutputFile;
   }
 
-  virtual void FileChanged(SourceLocation Loc, FileChangeReason Reason,
-                           SrcMgr::CharacteristicKind FileType,
-                           FileID PrevFID);
+  void FileChanged(SourceLocation Loc, FileChangeReason Reason,
+                   SrcMgr::CharacteristicKind FileType,
+                   FileID PrevFID) override;
 };
 }
 

lib/Frontend/MultiplexConsumer.cpp

@@ -30,14 +30,14 @@ public:
   // Does NOT take ownership of the elements in L.
   MultiplexASTDeserializationListener(
       const std::vector<ASTDeserializationListener*>& L);
-  virtual void ReaderInitialized(ASTReader *Reader);
-  virtual void IdentifierRead(serialization::IdentID ID,
-                              IdentifierInfo *II);
-  virtual void TypeRead(serialization::TypeIdx Idx, QualType T);
-  virtual void DeclRead(serialization::DeclID ID, const Decl *D);
-  virtual void SelectorRead(serialization::SelectorID iD, Selector Sel);
-  virtual void MacroDefinitionRead(serialization::PreprocessedEntityID, 
-                                   MacroDefinition *MD);
+  void ReaderInitialized(ASTReader *Reader) override;
+  void IdentifierRead(serialization::IdentID ID,
+                      IdentifierInfo *II) override;
+  void TypeRead(serialization::TypeIdx Idx, QualType T) override;
+  void DeclRead(serialization::DeclID ID, const Decl *D) override;
+  void SelectorRead(serialization::SelectorID iD, Selector Sel) override;
+  void MacroDefinitionRead(serialization::PreprocessedEntityID,
+                           MacroDefinition *MD) override;
 private:
   std::vector<ASTDeserializationListener*> Listeners;
 };
@@ -89,24 +89,23 @@ class MultiplexASTMutationListener : public ASTMutationListener {
 public:
   // Does NOT take ownership of the elements in L.
   MultiplexASTMutationListener(ArrayRef<ASTMutationListener*> L);
-  virtual void CompletedTagDefinition(const TagDecl *D);
-  virtual void AddedVisibleDecl(const DeclContext *DC, const Decl *D);
-  virtual void AddedCXXImplicitMember(const CXXRecordDecl *RD, const Decl *D);
-  virtual void AddedCXXTemplateSpecialization(const ClassTemplateDecl *TD,
-                                    const ClassTemplateSpecializationDecl *D);
-  virtual void
-  AddedCXXTemplateSpecialization(const VarTemplateDecl *TD,
-                                 const VarTemplateSpecializationDecl *D);
-  virtual void AddedCXXTemplateSpecialization(const FunctionTemplateDecl *TD,
-                                              const FunctionDecl *D);
-  virtual void DeducedReturnType(const FunctionDecl *FD, QualType ReturnType);
-  virtual void CompletedImplicitDefinition(const FunctionDecl *D);
-  virtual void StaticDataMemberInstantiated(const VarDecl *D);
-  virtual void AddedObjCCategoryToInterface(const ObjCCategoryDecl *CatD,
-                                            const ObjCInterfaceDecl *IFD);
-  virtual void AddedObjCPropertyInClassExtension(const ObjCPropertyDecl *Prop,
-                                            const ObjCPropertyDecl *OrigProp,
-                                            const ObjCCategoryDecl *ClassExt);
+  void CompletedTagDefinition(const TagDecl *D) override;
+  void AddedVisibleDecl(const DeclContext *DC, const Decl *D) override;
+  void AddedCXXImplicitMember(const CXXRecordDecl *RD, const Decl *D) override;
+  void AddedCXXTemplateSpecialization(const ClassTemplateDecl *TD,
+                            const ClassTemplateSpecializationDecl *D) override;
+  void AddedCXXTemplateSpecialization(const VarTemplateDecl *TD,
+                               const VarTemplateSpecializationDecl *D) override;
+  void AddedCXXTemplateSpecialization(const FunctionTemplateDecl *TD,
+                                      const FunctionDecl *D) override;
+  void DeducedReturnType(const FunctionDecl *FD, QualType ReturnType) override;
+  void CompletedImplicitDefinition(const FunctionDecl *D) override;
+  void StaticDataMemberInstantiated(const VarDecl *D) override;
+  void AddedObjCCategoryToInterface(const ObjCCategoryDecl *CatD,
+                                    const ObjCInterfaceDecl *IFD) override;
+  void AddedObjCPropertyInClassExtension(const ObjCPropertyDecl *Prop,
+                                    const ObjCPropertyDecl *OrigProp,
+                                    const ObjCCategoryDecl *ClassExt) override;
   void DeclarationMarkedUsed(const Decl *D) override;
 
 private:

lib/Frontend/PrintPreprocessedOutput.cpp

@@ -123,34 +123,28 @@ public:
   }
 
   bool startNewLineIfNeeded(bool ShouldUpdateCurrentLine = true);
-  
-  virtual void FileChanged(SourceLocation Loc, FileChangeReason Reason,
-                           SrcMgr::CharacteristicKind FileType,
-                           FileID PrevFID);
-  virtual void InclusionDirective(SourceLocation HashLoc,
-                                  const Token &IncludeTok,
-                                  StringRef FileName,
-                                  bool IsAngled,
-                                  CharSourceRange FilenameRange,
-                                  const FileEntry *File,
-                                  StringRef SearchPath,
-                                  StringRef RelativePath,
-                                  const Module *Imported);
-  virtual void Ident(SourceLocation Loc, const std::string &str);
+
+  void FileChanged(SourceLocation Loc, FileChangeReason Reason,
+                   SrcMgr::CharacteristicKind FileType,
+                   FileID PrevFID) override;
+  void InclusionDirective(SourceLocation HashLoc, const Token &IncludeTok,
+                          StringRef FileName, bool IsAngled,
+                          CharSourceRange FilenameRange, const FileEntry *File,
+                          StringRef SearchPath, StringRef RelativePath,
+                          const Module *Imported) override;
+  void Ident(SourceLocation Loc, const std::string &str) override;
   virtual void PragmaCaptured(SourceLocation Loc, StringRef Str);
-  virtual void PragmaMessage(SourceLocation Loc, StringRef Namespace,
-                             PragmaMessageKind Kind, StringRef Str);
-  virtual void PragmaDebug(SourceLocation Loc, StringRef DebugType);
-  virtual void PragmaDiagnosticPush(SourceLocation Loc,
-                                    StringRef Namespace);
-  virtual void PragmaDiagnosticPop(SourceLocation Loc,
-                                   StringRef Namespace);
-  virtual void PragmaDiagnostic(SourceLocation Loc, StringRef Namespace,
-                                diag::Mapping Map, StringRef Str);
-  virtual void PragmaWarning(SourceLocation Loc, StringRef WarningSpec,
-                             ArrayRef<int> Ids);
-  virtual void PragmaWarningPush(SourceLocation Loc, int Level);
-  virtual void PragmaWarningPop(SourceLocation Loc);
+  void PragmaMessage(SourceLocation Loc, StringRef Namespace,
+                     PragmaMessageKind Kind, StringRef Str) override;
+  void PragmaDebug(SourceLocation Loc, StringRef DebugType) override;
+  void PragmaDiagnosticPush(SourceLocation Loc, StringRef Namespace) override;
+  void PragmaDiagnosticPop(SourceLocation Loc, StringRef Namespace) override;
+  void PragmaDiagnostic(SourceLocation Loc, StringRef Namespace,
+                        diag::Mapping Map, StringRef Str) override;
+  void PragmaWarning(SourceLocation Loc, StringRef WarningSpec,
+                     ArrayRef<int> Ids) override;
+  void PragmaWarningPush(SourceLocation Loc, int Level) override;
+  void PragmaWarningPop(SourceLocation Loc) override;
 
   bool HandleFirstTokOnLine(Token &Tok);
 
@@ -174,10 +168,12 @@ public:
   void HandleNewlinesInToken(const char *TokStr, unsigned Len);
 
   /// MacroDefined - This hook is called whenever a macro definition is seen.
-  void MacroDefined(const Token &MacroNameTok, const MacroDirective *MD);
+  void MacroDefined(const Token &MacroNameTok,
+                    const MacroDirective *MD) override;
 
   /// MacroUndefined - This hook is called whenever a macro #undef is seen.
-  void MacroUndefined(const Token &MacroNameTok, const MacroDirective *MD);
+  void MacroUndefined(const Token &MacroNameTok,
+                      const MacroDirective *MD) override;
 };
 }  // end anonymous namespace
 
@@ -577,8 +573,8 @@ struct UnknownPragmaHandler : public PragmaHandler {
 
   UnknownPragmaHandler(const char *prefix, PrintPPOutputPPCallbacks *callbacks)
     : Prefix(prefix), Callbacks(callbacks) {}
-  virtual void HandlePragma(Preprocessor &PP, PragmaIntroducerKind Introducer,
-                            Token &PragmaTok) {
+  void HandlePragma(Preprocessor &PP, PragmaIntroducerKind Introducer,
+                    Token &PragmaTok) override {
     // Figure out what line we went to and insert the appropriate number of
     // newline characters.
     Callbacks->startNewLineIfNeeded();

lib/Frontend/SerializedDiagnosticPrinter.cpp

@@ -59,32 +59,32 @@ public:
   virtual ~SDiagsRenderer() {}
   
 protected:
-  virtual void emitDiagnosticMessage(SourceLocation Loc,
-                                     PresumedLoc PLoc,
-                                     DiagnosticsEngine::Level Level,
-                                     StringRef Message,
-                                     ArrayRef<CharSourceRange> Ranges,
-                                     const SourceManager *SM,
-                                     DiagOrStoredDiag D);
-  
-  virtual void emitDiagnosticLoc(SourceLocation Loc, PresumedLoc PLoc,
-                                 DiagnosticsEngine::Level Level,
-                                 ArrayRef<CharSourceRange> Ranges,
-                                 const SourceManager &SM) {}
-
-  virtual void emitNote(SourceLocation Loc, StringRef Message,
-                        const SourceManager *SM);
-
-  virtual void emitCodeContext(SourceLocation Loc,
-                               DiagnosticsEngine::Level Level,
-                               SmallVectorImpl<CharSourceRange>& Ranges,
-                               ArrayRef<FixItHint> Hints,
-                               const SourceManager &SM);
-
-  virtual void beginDiagnostic(DiagOrStoredDiag D,
-                               DiagnosticsEngine::Level Level);
-  virtual void endDiagnostic(DiagOrStoredDiag D,
-                             DiagnosticsEngine::Level Level);
+  void emitDiagnosticMessage(SourceLocation Loc,
+                             PresumedLoc PLoc,
+                             DiagnosticsEngine::Level Level,
+                             StringRef Message,
+                             ArrayRef<CharSourceRange> Ranges,
+                             const SourceManager *SM,
+                             DiagOrStoredDiag D) override;
+
+  void emitDiagnosticLoc(SourceLocation Loc, PresumedLoc PLoc,
+                         DiagnosticsEngine::Level Level,
+                         ArrayRef<CharSourceRange> Ranges,
+                         const SourceManager &SM) override {}
+
+  void emitNote(SourceLocation Loc, StringRef Message,
+                const SourceManager *SM) override;
+
+  void emitCodeContext(SourceLocation Loc,
+                       DiagnosticsEngine::Level Level,
+                       SmallVectorImpl<CharSourceRange>& Ranges,
+                       ArrayRef<FixItHint> Hints,
+                       const SourceManager &SM) override;
+
+  void beginDiagnostic(DiagOrStoredDiag D,
+                       DiagnosticsEngine::Level Level) override;
+  void endDiagnostic(DiagOrStoredDiag D,
+                     DiagnosticsEngine::Level Level) override;
 };
   
 class SDiagsWriter : public DiagnosticConsumer {
@@ -103,16 +103,15 @@ public:
   }
 
   ~SDiagsWriter() {}
-  
+
   void HandleDiagnostic(DiagnosticsEngine::Level DiagLevel,
-                        const Diagnostic &Info);
-  
-  void BeginSourceFile(const LangOptions &LO,
-                       const Preprocessor *PP) {
+                        const Diagnostic &Info) override;
+
+  void BeginSourceFile(const LangOptions &LO, const Preprocessor *PP) override {
     LangOpts = &LO;
   }
 
-  virtual void finish();
+  void finish() override;
 
 private:
   /// \brief Emit the preamble for the serialized diagnostics.

lib/Frontend/VerifyDiagnosticConsumer.cpp

@@ -166,12 +166,12 @@ public:
                     StringRef Text, unsigned Min, unsigned Max)
     : Directive(DirectiveLoc, DiagnosticLoc, Text, Min, Max) { }
 
-  virtual bool isValid(std::string &Error) {
+  bool isValid(std::string &Error) override {
     // all strings are considered valid; even empty ones
     return true;
   }
 
-  virtual bool match(StringRef S) {
+  bool match(StringRef S) override {
     return S.find(Text) != StringRef::npos;
   }
 };
@@ -184,13 +184,13 @@ public:
                  StringRef Text, unsigned Min, unsigned Max, StringRef RegexStr)
     : Directive(DirectiveLoc, DiagnosticLoc, Text, Min, Max), Regex(RegexStr) { }
 
-  virtual bool isValid(std::string &Error) {
+  bool isValid(std::string &Error) override {
     if (Regex.isValid(Error))
       return true;
     return false;
   }
 
-  virtual bool match(StringRef S) {
+  bool match(StringRef S) override {
     return Regex.match(S);
   }