On Friday, 3 November 2017 at 10:14:27 UTC, Joakim wrote: > See the linked druntime pull, core.simd is only imported for > dmd: > > https://github.com/dlang/druntime/pull/1891/files#diff-c17bbc97c8719ab709a4a54e2f6924ceR67 Ah, I see. I misunderstood Walter to be saying the user needed core.simd to get the vectorization. Thanks!