Object pool with support for untagged entries.

runtime/vm/stack_frame.h

 // Copyright (c) 2011, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 #ifndef VM_STACK_FRAME_H_
 #define VM_STACK_FRAME_H_
 
 #include "vm/allocation.h"
 #include "vm/object.h"
 #include "vm/stub_code.h"
@@ skipping 305 matching lines @@
  private:
   void SetDone() { index_ = -1; }
 
   intptr_t index_;
   intptr_t num_materializations_;
   Code& code_;
   TypedData& deopt_info_;
   Function& function_;
   uword pc_;
   GrowableArray<DeoptInstr*> deopt_instructions_;
-  Array& object_table_;
+  ObjectPool& object_table_;
 
   DISALLOW_COPY_AND_ASSIGN(InlinedFunctionsIterator);
 };
 
 }  // namespace dart
 
 #endif  // VM_STACK_FRAME_H_