Introduce a generation number for selector lookups in the global

method pool, so that we don't perform the same lookups into the same
PCH/module file repeatedly.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@148895 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 6 insertions, 1 deletions

diff --git a/include/clang/Serialization/ASTReader.h b/include/clang/Serialization/ASTReader.h
index 2f4a5eba7d..91f872bc1b 100644
--- a/include/clang/Serialization/ASTReader.h
+++ b/include/clang/Serialization/ASTReader.h
@@ -424,6 +424,10 @@ private:
   /// global selector ID to produce a local ID.
   GlobalSelectorMapType GlobalSelectorMap;
 
+  /// \brief The generation number of the last time we loaded data from the
+  /// global method pool for this selector.
+  llvm::DenseMap<Selector, unsigned> SelectorGeneration;
+
   /// \brief Mapping from identifiers that represent macros whose definitions
   /// have not yet been deserialized to the global offset where the macro
   /// record resides.
@@ -656,7 +660,8 @@ private:
   /// loaded once the recursive loading has completed.
   std::deque<PendingIdentifierInfo> PendingIdentifierInfos;
 
-  /// \brief The generation number of 
+  /// \brief The generation number of each identifier, which keeps track of
+  /// the last time we loaded information about this identifier.
   llvm::DenseMap<IdentifierInfo *, unsigned> IdentifierGeneration;
   
   /// \brief Contains declarations and definitions that will be