What do /ehopt and /noehopt compiler options mean? We've found
(accidentally) that /noehopt option speeds up our 64bit build
considerably. This option is undocumented and it would be great to
know what it does and what exactly we're losing by specifying /
noehopt? If it turns out that /noehopt does a useful thing, is there
a way to achieve the same effect with documented options?

Thanks,
-Alexei