Hi, Xiao Feng, GC gurus, I'm back to IdentityHashCode implementation on magics [1]. I had managed to inline the helper for System.identityHashCode(), but unfortunately I had stuck with buffered hashcode scheme. Basically, there is no support for buffered hashcodes in GCHelper and I doubt it could be implemented there as we need to traverse native data structure on hashcode lookup. Not saying about performance when there are many hashcodes in the run, I have a suspicion there is the problem too.
So I wonder whether is it possible to turn on "attached hashcode" instead of "buffered hashcode" somehow to see the performance impact? I searched through sources and it's still unclear for me. Thanks, Aleksey. [1] https://issues.apache.org/jira/browse/HARMONY-5713
