[PCH] In ASTReader::completeVisibleDeclsMap, after we loaded all visible decls, mark

the declaration context as not having external visible storage any more.

This should improve performance as we won't needlessly reload the visible decls multiple times
and seems to fix the i386 crash in rdar://11327522.

llvm-svn: 155649

clang/lib/Serialization/ASTReader.cpp

@@ -5025,6 +5025,7 @@ void ASTReader::completeVisibleDeclsMap(const DeclContext *DC) {
          I = Decls.begin(), E = Decls.end(); I != E; ++I) {
     SetExternalVisibleDeclsForName(DC, I->first, I->second);
   }
+  const_cast<DeclContext *>(DC)->setHasExternalVisibleStorage(false);
 }
 
 /// \brief Under non-PCH compilation the consumer receives the objc methods