MemBarRelease for final field write can be removed when its allocation doesn't escape thread, allocation node can be acquired from its MemBarNode::Precedent input.
Currently, MemBarRelase's Precedent input is only added when eliminate_boxing is true and its owning object is primitive Box (see Parse::do_put_xxx and Parse::do_exits). Checking OpenJDK log, this is added for autoboxing elimination early. Now I suggest turn on this optimization for general object type, this can benefit RMO platform (like aarch64) performance.

Enhancement try removing constraints for set_alloc_with_final(obj) in do_put_xxx (parse3.cpp). This leads to adding Precedent input for all kind object's final field writes' MemBarRelase node. Then they have opportunities to get optimized.