$ patch -p0 < opt.diff
Depending, some stuff is 2x like gus handling, major speed up for some functions(gen_lea near 2x, finddynreg is 20%), etc, etc, but overall it's just 3-4% speed gain by my measuring. Note though, I'm cpu bound & finddynreg passes the normalxxx video routines as big-o once cycles pass 13-16k or so, varies depending which renderer is used, so guys with beefier cpus that can handle higher cycle settings should actually see more improvement(I know, I know, not fair that the guys with beefier systems get a bigger benefit:). There's also some code clean up so some things are more readable, simplified, reduced. Have a look-see.