Make Logger::SuspectReadEvent extract the class name from the object.

src/ic.cc

 // Copyright 2006-2008 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 496 matching lines @@
 
   // Named lookup in the object.
   LookupResult lookup;
   object->Lookup(*name, &lookup);
 
   // If lookup is invalid, check if we need to throw an exception.
   if (!lookup.IsValid()) {
     if (FLAG_strict || is_contextual()) {
       return ReferenceError("not_defined", name);
     }
-    String* class_name = object->IsJSObject()
-                         ? Handle<JSObject>::cast(object)->class_name()
-                         : Heap::empty_string();
-    LOG(SuspectReadEvent(*name, class_name));
-    USE(class_name);
+    LOG(SuspectReadEvent(*name, *object));
   }
 
   // Update inline cache and stub cache.
   if (FLAG_use_ic && lookup.IsLoaded()) {
     UpdateCaches(&lookup, state, object, name);
   }
 
   PropertyAttributes attr;
   if (lookup.IsValid() && lookup.type() == INTERCEPTOR) {
     // Get the property.
@@ skipping 667 matching lines @@
 #undef ADDR
 };
 
 
 Address IC::AddressFromUtilityId(IC::UtilityId id) {
   return IC_utilities[id];
 }
 
 
 } }  // namespace v8::internal