I've wanted to use things at the level of Duff's device on pre-release console hardware (SPUs and the Xenon both suck at branching, and the compiler is beyond a

I've wanted to use things at the level of Duff's device on pre-release console hardware (SPUs and the Xenon both suck at branching, and the compiler is beyond abysmal to the point where my girlfriend can still make me wake up screaming by whispering "--target=spu-elf" in my ear while I'm asleep). On the other hand portability is a non-issue and in that circumstance there's no such thing as source-level debugging (not that I would want to step through Duff's with a source-level debugger) so everything is usually just written in assembly. I'm also not convinced I'd trust the compiler to get parallelization right, especially since as another poster mentions Duff's gives you a really unusual CFG.