ARM: Implement runtime function for array literal transitions.

src/objects.cc

 // Copyright 2011 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 9479 matching lines @@
   if (from_kind == FAST_SMI_ONLY_ELEMENTS) {
     if (to_kind == FAST_DOUBLE_ELEMENTS) {
       MaybeObject* maybe_result =
           SetFastDoubleElementsCapacityAndLength(capacity, length);
       if (maybe_result->IsFailure()) return maybe_result;
       return this;
     } else if (to_kind == FAST_ELEMENTS) {
       MaybeObject* maybe_new_map = GetElementsTransitionMap(FAST_ELEMENTS);
       Map* new_map;
       if (!maybe_new_map->To(&new_map)) return maybe_new_map;
+      if (FLAG_trace_elements_transitions) {
+        PrintElementsTransition(stdout, from_kind, elms, FAST_ELEMENTS, elms);
+      }
       set_map(new_map);
       return this;
     }
   } else if (from_kind == FAST_DOUBLE_ELEMENTS && to_kind == FAST_ELEMENTS) {
     MaybeObject* maybe_result = SetFastElementsCapacityAndLength(
         capacity, length, kDontAllowSmiOnlyElements);
     if (maybe_result->IsFailure()) return maybe_result;
     return this;
   }
   // This method should never be called for any other case than the ones
@@ skipping 3005 matching lines @@
   if (break_point_objects()->IsUndefined()) return 0;
   // Single break point.
   if (!break_point_objects()->IsFixedArray()) return 1;
   // Multiple break points.
   return FixedArray::cast(break_point_objects())->length();
 }
 #endif  // ENABLE_DEBUGGER_SUPPORT
 
 
 } }  // namespace v8::internal