Mainly renaming ZOop::to_oop() to ZOop::from_address(), but also turning ZOop into a pure cast utility class. The other functions in this class weren't widely used. Bug: https://bugs.openjdk.java.net/browse/JDK-8221984 Webrev: http://cr.openjdk.java.net/~pliden/8221984/webrev.0 /Per