Following suggestion from Vladimir Ivanov and Roland here: https://mail.openjdk.java.net/pipermail/hotspot-compiler-dev/2022-February/053437.html
Some experimentation has been done early for this: https://github.com/iwanowww/jdk/tree/split_unique_types
Some experimentation has been done early for this: https://github.com/iwanowww/jdk/tree/split_unique_types