Mans Rullgard <mans.rullg...@linaro.org> wrote on 11.06.2012 19:23:53: > On 11 June 2012 17:34, Ulrich Weigand <ulrich.weig...@de.ibm.com> wrote: > > There's a number of issues with how GCC choses the vectorize this loop > > that we can potentially improve upon. However, it would appear that no > > matter what, it probably isn't actually helpful to try to vectorize this > > loop in the first place. > > It could be beneficial to merge the stores into a single 64-bit store.
Right, I guess this could still be done by SLP even if the loop isn't vectorized ... > > However for now, I'd recommend you use -fvect-cost-model when testing > > the vectorizer on libav. > > I'll add that flag and see what happens. Any other flags I should be using? I can't think of anything else right now ... Mit freundlichen Gruessen / Best Regards Ulrich Weigand -- Dr. Ulrich Weigand | Phone: +49-7031/16-3727 STSM, GNU compiler and toolchain for Linux on System z and Cell/B.E. IBM Deutschland Research & Development GmbH Vorsitzende des Aufsichtsrats: Martina Koederitz | Geschäftsführung: Dirk Wittkopp Sitz der Gesellschaft: Böblingen | Registergericht: Amtsgericht Stuttgart, HRB 243294 _______________________________________________ linaro-toolchain mailing list linaro-toolchain@lists.linaro.org http://lists.linaro.org/mailman/listinfo/linaro-toolchain
