You can use the Vector API (https://openjdk.org/jeps/529 https://openjdk.org/jeps/529) for manual vectorisation. Although there's no doubt that the lack of fla

You can use the Vector API (https://openjdk.org/jeps/529 https://openjdk.org/jeps/529) for manual vectorisation. Although there's no doubt that the lack of flattened object is the last remaining real performance issue for Java vs. a lower-level language, and it specifically impacts programs of the kind you're writing. Valhalla will take care of that.