Put newly allocated buffers at the right end of the buffers list

src/heap/objects-visiting.cc

Index: src/heap/objects-visiting.cc
diff --git a/src/heap/objects-visiting.cc b/src/heap/objects-visiting.cc
index 520e539c7cca5e779f71aa1096ad72e4b2fd20c7..cf71fb2bdaf540423a3ec3c8f46c03771d1a888b 100644
--- a/src/heap/objects-visiting.cc
+++ b/src/heap/objects-visiting.cc
@@ -192,7 +192,7 @@ struct WeakListVisitor;
 
 template <class T>
 Object* VisitWeakList(Heap* heap, Object* list, WeakObjectRetainer* retainer,
-                      bool stop_after_young) {
+                      bool stop_after_young, Object** list_tail) {
   Object* undefined = heap->undefined_value();
   Object* head = undefined;
   T* tail = NULL;
@@ -237,6 +237,7 @@ Object* VisitWeakList(Heap* heap, Object* list, WeakObjectRetainer* retainer,
   // Terminate the list if there is one or more elements.
   if (tail != NULL) {
     WeakListVisitor<T>::SetWeakNext(tail, undefined);
+    if (list_tail) *list_tail = tail;
   }
   return head;
 }
@@ -370,7 +371,7 @@ struct WeakListVisitor<Context> {
                          WeakObjectRetainer* retainer, int index) {
     // Visit the weak list, removing dead intermediate elements.
     Object* list_head =
-        VisitWeakList<T>(heap, context->get(index), retainer, false);
+        VisitWeakList<T>(heap, context->get(index), retainer, false, NULL);
 
     // Update the list head.
     context->set(index, list_head, UPDATE_WRITE_BARRIER);
@@ -422,7 +423,7 @@ struct WeakListVisitor<JSArrayBuffer> {
   static void VisitLiveObject(Heap* heap, JSArrayBuffer* array_buffer,
                               WeakObjectRetainer* retainer) {
     Object* typed_array_obj = VisitWeakList<JSArrayBufferView>(
-        heap, array_buffer->weak_first_view(), retainer, false);
+        heap, array_buffer->weak_first_view(), retainer, false, NULL);
     array_buffer->set_weak_first_view(typed_array_obj);
     if (typed_array_obj != heap->undefined_value() && MustRecordSlots(heap)) {
       Object** slot = HeapObject::RawField(array_buffer,
@@ -455,19 +456,23 @@ struct WeakListVisitor<AllocationSite> {
 
 template Object* VisitWeakList<Context>(Heap* heap, Object* list,
                                         WeakObjectRetainer* retainer,
-                                        bool stop_after_young);
+                                        bool stop_after_young,
+                                        Object** list_tail);
 
 
 template Object* VisitWeakList<JSArrayBuffer>(Heap* heap, Object* list,
                                               WeakObjectRetainer* retainer,
-                                              bool stop_after_young);
+                                              bool stop_after_young,
+                                              Object** list_tail);
 
 template Object* VisitWeakList<JSArrayBufferView>(Heap* heap, Object* list,
                                                   WeakObjectRetainer* retainer,
-                                                  bool stop_after_young);
+                                                  bool stop_after_young,
+                                                  Object** list_tail);
 
 template Object* VisitWeakList<AllocationSite>(Heap* heap, Object* list,
                                                WeakObjectRetainer* retainer,
-                                               bool stop_after_young);
+                                               bool stop_after_young,
+                                               Object** list_tail);
 }
 }  // namespace v8::internal