3 files changed, 9 insertions, 6 deletions
diff --git a/include/clang/Serialization/ASTBitCodes.h b/include/clang/Serialization/ASTBitCodes.h
index 3714b77f2b..8628d74ff1 100644
--- a/include/clang/Serialization/ASTBitCodes.h
+++ b/include/clang/Serialization/ASTBitCodes.h
@@ -112,10 +112,13 @@ namespace clang {
     typedef llvm::DenseMap<QualType, TypeIdx, UnsafeQualTypeDenseMapInfo>
         TypeIdxMap;
 
-    /// \brief An ID number that refers to an identifier in an AST
-    /// file.
+    /// \brief An ID number that refers to an identifier in an AST file.
     typedef uint32_t IdentID;
 
+    /// \brief An ID number that refers to a macro in an AST file.
+    typedef uint32_t MacroID;
+
+    /// \brief An ID number that refers to an ObjC selctor in an AST file.
     typedef uint32_t SelectorID;
 
     /// \brief Describes the various kinds of blocks that occur within
diff --git a/include/clang/Serialization/ASTReader.h b/include/clang/Serialization/ASTReader.h
index d31be88a3e..f1801f4943 100644
--- a/include/clang/Serialization/ASTReader.h
+++ b/include/clang/Serialization/ASTReader.h
@@ -1028,7 +1028,7 @@ public:
   virtual void ReadDefinedMacros();
 
   /// \brief Retrieve the macro definition with the given ID.
-  MacroDefinition *getMacroDefinition(serialization::IdentID ID);
+  MacroDefinition *getMacroDefinition(serialization::MacroID ID);
 
   /// \brief Retrieve the AST context that this AST reader supplements.
   ASTContext *getContext() { return Context; }
diff --git a/include/clang/Serialization/ASTWriter.h b/include/clang/Serialization/ASTWriter.h
index 426fc47801..95964e0ea5 100644
--- a/include/clang/Serialization/ASTWriter.h
+++ b/include/clang/Serialization/ASTWriter.h
@@ -173,8 +173,8 @@ private:
   llvm::DenseMap<const IdentifierInfo *, uint64_t> MacroOffsets;
 
   /// \brief Mapping from macro definitions (as they occur in the preprocessing
-  /// record) to the index into the macro definitions table.
-  llvm::DenseMap<const MacroDefinition *, serialization::IdentID>
+  /// record) to the macro IDs.
+  llvm::DenseMap<const MacroDefinition *, serialization::MacroID>
       MacroDefinitions;
   
   /// \brief Mapping from the macro definition indices in \c MacroDefinitions
@@ -353,7 +353,7 @@ public:
 
   /// \brief Retrieve the ID number corresponding to the given macro 
   /// definition.
-  serialization::IdentID getMacroDefinitionID(MacroDefinition *MD);
+  serialization::MacroID getMacroDefinitionID(MacroDefinition *MD);
   
   /// \brief Emit a reference to a type.
   void AddTypeRef(QualType T, RecordData &Record);