Share optimized code for closures.

src/mark-compact.cc

Index: src/mark-compact.cc
===================================================================
--- src/mark-compact.cc	(revision 11394)
+++ src/mark-compact.cc	(working copy)
@@ -1313,10 +1313,8 @@
 
 
   static void VisitSharedFunctionInfoGeneric(Map* map, HeapObject* object) {
-    SharedFunctionInfo* shared = reinterpret_cast<SharedFunctionInfo*>(object);
+    reinterpret_cast<SharedFunctionInfo*>(object)->BeforeVisitingPointers();
 
-    if (shared->IsInobjectSlackTrackingInProgress()) shared->DetachInitialMap();
-
     FixedBodyVisitor<StaticMarkingVisitor,
                      SharedFunctionInfo::BodyDescriptor,
                      void>::Visit(map, object);
@@ -1413,7 +1411,7 @@
     Heap* heap = map->GetHeap();
     SharedFunctionInfo* shared = reinterpret_cast<SharedFunctionInfo*>(object);
 
-    if (shared->IsInobjectSlackTrackingInProgress()) shared->DetachInitialMap();
+    shared->BeforeVisitingPointers();
 
     if (shared->ic_age() != heap->global_ic_age()) {
       shared->ResetForNewContext(heap->global_ic_age());
@@ -1554,8 +1552,8 @@
     }
 
     VisitPointers(heap,
-                  SLOT_ADDR(object, SharedFunctionInfo::kScopeInfoOffset),
-                  SLOT_ADDR(object, SharedFunctionInfo::kSize));
+        SLOT_ADDR(object, SharedFunctionInfo::kOptimizedCodeMapOffset),
+        SLOT_ADDR(object, SharedFunctionInfo::kSize));
   }
 
   #undef SLOT_ADDR