Hi Thought I would be able to do that. But after testing, I could not measure any difference. Thought it would make a noticeable difference, but guess gcc resolve this in the best way. Best regards Rickard Strandqvist 2014-06-02 9:24 GMT+02:00 Clemens Ladisch <clemens@xxxxxxxxxx>: > Rickard Strandqvist wrote: >> From what I know, AND is faster then modulo. > > Which is why the compiler does this optimization automatically, > if it can prove that it is correct. > >> - if (i != 0 && (i%64) == 0) >> + if (i != 0 && (i&63) == 0) > > Did you prove that i cannot be negative? > > > Regards, > Clemens -- To unsubscribe from this list: send the line "unsubscribe linux-ia64" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
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