Object pool with support for untagged entries.

runtime/vm/deferred_objects.cc

Index: runtime/vm/deferred_objects.cc
diff --git a/runtime/vm/deferred_objects.cc b/runtime/vm/deferred_objects.cc
index ba620c4558f4e59a2ff66d54a2c73cf42a7135d9..a647af1768a356b2db103551cd94df8463f4cd59 100644
--- a/runtime/vm/deferred_objects.cc
+++ b/runtime/vm/deferred_objects.cc
@@ -214,13 +214,13 @@ void DeferredPp::Materialize(DeoptContext* deopt_context) {
   }
   const Code& code = Code::Handle(zone, function.unoptimized_code());
   ASSERT(!code.IsNull());
-  ASSERT(code.ObjectPool() != Object::null());
-  *slot() = code.ObjectPool();
+  ASSERT(code.GetObjectPool() != Object::null());
+  *slot() = code.GetObjectPool();
 
   if (FLAG_trace_deoptimization_verbose) {
     OS::PrintErr("materializing pp at 0x%" Px ": 0x%" Px "\n",
                  reinterpret_cast<uword>(slot()),
-                 reinterpret_cast<uword>(code.ObjectPool()));
+                 reinterpret_cast<uword>(code.GetObjectPool()));
   }
 }