If I recall correct, the 060 is 32-bit pure and hardware emulates <32-bit by simply stripping the communication since it would take more resources to do it "the right way" (and it wouldn't shave any cycles anyway). As others pointed out: modifying CF to do this is not a viable option. So (finally) my question is: will doing this with JIT have a notable impact on performance?
By "notable" I don't mean a reduction of a vanishing factor 4 in the scope of a x1400 or x140 gain.