There are methods in Java which have special vm implementations to take advantage of instructions like this. They methods have an ordinary Java code version for

There are methods in Java which have special vm implementations to take advantage of instructions like this. They methods have an ordinary Java code version for the interpreter and on jit compilation are replaced with the other version. For a complete list of these types of functions see http://hg.openjdk.java.net/jdk8/jdk8/hotspot/file/87ee5ee27509/src/share/vm/classfile/vmSymbols.hpp#l581 http://hg.openjdk.java.net/jdk8/jdk8/hotspot/file/87ee5ee275...