> > > - testl %esi, %esi
> > > + clc
> >
> > you've just slowed the code down. clc does not pair. testl %esi, %esi
> > does.
>
> minor correction - actually, as this is 686 code, it does. [..]
clc (as all the other flag-manipulation instructions) is non-pairable.
-- mingo
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