Hmmmm. Fast code for my particular application, in my area of specialization. But not actually very helpful for 99.9% of applications that are actually deployed

Hmmmm. Fast code for my particular application, in my area of specialization. But not actually very helpful for 99.9% of applications that are actually deployed, which dont really suffer from the type of problem here, and far higher level optimisation would have greater benefit... E.g. prefer final fields; don't share between threads unless you need to; there is little point micro-optimising a poor algorithm; don't do the same work repeatedly... Having said that, in a specialised context, very interesting....