Some people already mentioned this in the r/cpp discussion. Small correction: 256 is not the correct number of iterations, since if all elements in that slice are even, then your 8-bit counter will wrap-around to zero, which can lead to a wrong answer. What you want is 255 iterations.
I've looked at the generated assembly for such a solution and it doesn't look great. I'm expecting a significant speed penalty, but I haven't had the time to test it today. Will probably do so tomorrow.
I've looked at the generated assembly for such a solution and it doesn't look great. I'm expecting a significant speed penalty, but I haven't had the time to test it today. Will probably do so tomorrow.