Simplify ASTReader ctor by using in-class initializers (NSDMIs to the rest of you) for many member variables

llvm-svn: 291154

clang/include/clang/Serialization/ASTReader.h

@@ -384,8 +384,8 @@ private:
   std::unique_ptr<ASTReaderListener> Listener;
 
   /// \brief The receiver of deserialization events.
-  ASTDeserializationListener *DeserializationListener;
-  bool OwnsDeserializationListener;
+  ASTDeserializationListener *DeserializationListener = nullptr;
+  bool OwnsDeserializationListener = false;
 
   SourceManager &SourceMgr;
   FileManager &FileMgr;
@@ -394,7 +394,7 @@ private:
 
   /// \brief The semantic analysis object that will be processing the
   /// AST files and the translation unit that uses it.
-  Sema *SemaObj;
+  Sema *SemaObj = nullptr;
 
   /// \brief The preprocessor that will be loading the source file.
   Preprocessor &PP;
@@ -403,7 +403,7 @@ private:
   ASTContext &Context;
 
   /// \brief The AST consumer.
-  ASTConsumer *Consumer;
+  ASTConsumer *Consumer = nullptr;
 
   /// \brief The module manager which manages modules and their dependencies
   ModuleManager ModuleMgr;
@@ -802,10 +802,10 @@ private:
   SourceLocation OptimizeOffPragmaLocation;
 
   /// \brief The PragmaMSStructKind pragma ms_struct state if set, or -1.
-  int PragmaMSStructState;
+  int PragmaMSStructState = -1;
 
   /// \brief The PragmaMSPointersToMembersKind pragma pointers_to_members state.
-  int PragmaMSPointersToMembersState;
+  int PragmaMSPointersToMembersState = -1;
   SourceLocation PointersToMembersPragmaLocation;
 
   /// \brief The OpenCL extension settings.
@@ -870,10 +870,10 @@ private:
   bool UseGlobalIndex;
 
   /// \brief Whether we have tried loading the global module index yet.
-  bool TriedLoadingGlobalIndex;
+  bool TriedLoadingGlobalIndex = false;
 
   ///\brief Whether we are currently processing update records.
-  bool ProcessingUpdateRecords;
+  bool ProcessingUpdateRecords = false;
 
   typedef llvm::DenseMap<unsigned, SwitchCase *> SwitchCaseMapTy;
   /// \brief Mapping from switch-case IDs in the chain to switch-case statements
@@ -886,73 +886,73 @@ private:
 
   /// \brief The number of source location entries de-serialized from
   /// the PCH file.
-  unsigned NumSLocEntriesRead;
+  unsigned NumSLocEntriesRead = 0;
 
   /// \brief The number of source location entries in the chain.
-  unsigned TotalNumSLocEntries;
+  unsigned TotalNumSLocEntries = 0;
 
   /// \brief The number of statements (and expressions) de-serialized
   /// from the chain.
-  unsigned NumStatementsRead;
+  unsigned NumStatementsRead = 0;
 
   /// \brief The total number of statements (and expressions) stored
   /// in the chain.
-  unsigned TotalNumStatements;
+  unsigned TotalNumStatements = 0;
 
   /// \brief The number of macros de-serialized from the chain.
-  unsigned NumMacrosRead;
+  unsigned NumMacrosRead = 0;
 
   /// \brief The total number of macros stored in the chain.
-  unsigned TotalNumMacros;
+  unsigned TotalNumMacros = 0;
 
   /// \brief The number of lookups into identifier tables.
-  unsigned NumIdentifierLookups;
+  unsigned NumIdentifierLookups = 0;
 
   /// \brief The number of lookups into identifier tables that succeed.
-  unsigned NumIdentifierLookupHits;
+  unsigned NumIdentifierLookupHits = 0;
 
   /// \brief The number of selectors that have been read.
-  unsigned NumSelectorsRead;
+  unsigned NumSelectorsRead = 0;
 
   /// \brief The number of method pool entries that have been read.
-  unsigned NumMethodPoolEntriesRead;
+  unsigned NumMethodPoolEntriesRead = 0;
 
   /// \brief The number of times we have looked up a selector in the method
   /// pool.
-  unsigned NumMethodPoolLookups;
+  unsigned NumMethodPoolLookups = 0;
 
   /// \brief The number of times we have looked up a selector in the method
   /// pool and found something.
-  unsigned NumMethodPoolHits;
+  unsigned NumMethodPoolHits = 0;
 
   /// \brief The number of times we have looked up a selector in the method
   /// pool within a specific module.
-  unsigned NumMethodPoolTableLookups;
+  unsigned NumMethodPoolTableLookups = 0;
 
   /// \brief The number of times we have looked up a selector in the method
   /// pool within a specific module and found something.
-  unsigned NumMethodPoolTableHits;
+  unsigned NumMethodPoolTableHits = 0;
 
   /// \brief The total number of method pool entries in the selector table.
-  unsigned TotalNumMethodPoolEntries;
+  unsigned TotalNumMethodPoolEntries = 0;
 
   /// Number of lexical decl contexts read/total.
-  unsigned NumLexicalDeclContextsRead, TotalLexicalDeclContexts;
+  unsigned NumLexicalDeclContextsRead = 0, TotalLexicalDeclContexts = 0;
 
   /// Number of visible decl contexts read/total.
-  unsigned NumVisibleDeclContextsRead, TotalVisibleDeclContexts;
+  unsigned NumVisibleDeclContextsRead = 0, TotalVisibleDeclContexts = 0;
 
   /// Total size of modules, in bits, currently loaded
-  uint64_t TotalModulesSizeInBits;
+  uint64_t TotalModulesSizeInBits = 0;
 
   /// \brief Number of Decl/types that are currently deserializing.
-  unsigned NumCurrentElementsDeserializing;
+  unsigned NumCurrentElementsDeserializing = 0;
 
   /// \brief Set true while we are in the process of passing deserialized
   /// "interesting" decls to consumer inside FinishedDeserializing().
   /// This is used as a guard to avoid recursively repeating the process of
   /// passing decls to consumer.
-  bool PassingDeclsToConsumer;
+  bool PassingDeclsToConsumer = false;
 
   /// \brief The set of identifiers that were read while the AST reader was
   /// (recursively) loading declarations.
@@ -1055,7 +1055,7 @@ private:
   };
 
   /// \brief What kind of records we are reading.
-  ReadingKind ReadingKind;
+  ReadingKind ReadingKind = Read_None;
 
   /// \brief RAII object to change the reading kind.
   class ReadingKindTracker {

clang/lib/Serialization/ASTReader.cpp

@@ -8901,29 +8901,15 @@ ASTReader::ASTReader(Preprocessor &PP, ASTContext &Context,
     : Listener(DisableValidation
                    ? cast<ASTReaderListener>(new SimpleASTReaderListener(PP))
                    : cast<ASTReaderListener>(new PCHValidator(PP, *this))),
-      DeserializationListener(nullptr), OwnsDeserializationListener(false),
       SourceMgr(PP.getSourceManager()), FileMgr(PP.getFileManager()),
-      PCHContainerRdr(PCHContainerRdr), Diags(PP.getDiagnostics()),
-      SemaObj(nullptr), PP(PP), Context(Context), Consumer(nullptr),
-      ModuleMgr(PP.getFileManager(), PCHContainerRdr), DummyIdResolver(PP),
-      ReadTimer(std::move(ReadTimer)), PragmaMSStructState(-1),
-      PragmaMSPointersToMembersState(-1), isysroot(isysroot),
+      PCHContainerRdr(PCHContainerRdr), Diags(PP.getDiagnostics()), PP(PP),
+      Context(Context), ModuleMgr(PP.getFileManager(), PCHContainerRdr),
+      DummyIdResolver(PP), ReadTimer(std::move(ReadTimer)), isysroot(isysroot),
       DisableValidation(DisableValidation),
       AllowASTWithCompilerErrors(AllowASTWithCompilerErrors),
       AllowConfigurationMismatch(AllowConfigurationMismatch),
       ValidateSystemInputs(ValidateSystemInputs),
-      UseGlobalIndex(UseGlobalIndex), TriedLoadingGlobalIndex(false),
-      ProcessingUpdateRecords(false), CurrSwitchCaseStmts(&SwitchCaseStmts),
-      NumSLocEntriesRead(0), TotalNumSLocEntries(0), NumStatementsRead(0),
-      TotalNumStatements(0), NumMacrosRead(0), TotalNumMacros(0),
-      NumIdentifierLookups(0), NumIdentifierLookupHits(0), NumSelectorsRead(0),
-      NumMethodPoolEntriesRead(0), NumMethodPoolLookups(0),
-      NumMethodPoolHits(0), NumMethodPoolTableLookups(0),
-      NumMethodPoolTableHits(0), TotalNumMethodPoolEntries(0),
-      NumLexicalDeclContextsRead(0), TotalLexicalDeclContexts(0),
-      NumVisibleDeclContextsRead(0), TotalVisibleDeclContexts(0),
-      TotalModulesSizeInBits(0), NumCurrentElementsDeserializing(0),
-      PassingDeclsToConsumer(false), ReadingKind(Read_None) {
+      UseGlobalIndex(UseGlobalIndex), CurrSwitchCaseStmts(&SwitchCaseStmts) {
   SourceMgr.setExternalSLocEntrySource(this);
 
   for (const auto &Ext : Extensions) {