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Sent from my iPhone > On Nov 5, 2013, at 7:39 PM, Frank Winter <fwinter at jlab.org> wrote: > > Good that you bring this up. I still have no solution to this vectorization problem. > > However, I can rewrite the code and insert a second loop which eliminates the 'urem' and 'div' instructions in the index calculations. In this case, the inner loop's trip

Good that you bring this up. I still have no solution to this vectorization problem. However, I can rewrite the code and insert a second loop which eliminates the 'urem' and 'div' instructions in the index calculations. In this case, the inner loop's trip count would be equal to the SIMD length and the loop vectorizer ignores the loop. Unrolling the loop and SLP is not an