On Wed, 3 Jan 2007, Alan wrote: > > > cmov is effectively the same cost as a compare and jump, in both cases > > the cpu needs to do a prediction, and on a mispredict, restart. > > On a P4 it appears to be slower than compare/jump in most cases
On just about EVERYTHING it's slower than compare/jump. See my other post on why, together with a (largely untested) test app. Linus - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/