Hi Bill, On Fri, Jul 21, 2017 at 10:40:43AM -0500, Bill Schmidt wrote: > In https://gcc.gnu.org/ml/gcc-patches/2017-05/msg00924.html, I raised the > vectorization cost for a vec_construct operation that requires direct > moves between GPRs and VSRs. The cost equation I substituted has since > proven to be slightly more conservative than attended, and we're seeing > some cases of SLP vectorization being avoided that should not be. This > patch adjusts the equation to reduce the cost somewhat. > > I've tested this to ensure the cases previously seen are now being > vectorized again, and done some benchmark testing that shows no measurable > result, positive or negative. So this is just minor fine-tuning, but > still important to get right. > > Bootstrapped and tested on powerpc64le-unknown-linux-gnu with no regressions. > Is this ok for trunk?
Sure, thanks! Segher
