https://gcc.gnu.org/bugzilla/show_bug.cgi?id=70354
Richard Biener <rguenth at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Status|ASSIGNED |NEW Assignee|rguenth at gcc dot gnu.org |unassigned at gcc dot gnu.org --- Comment #5 from Richard Biener <rguenth at gcc dot gnu.org> --- Looks like a target issue to me - the vectorized IL looks good. Note we use the V[24]DImode multiplication AVX2 code here. But maybe that just confuses me enough to give up here ;) The -mprefer-avx128 code is a lot easier to look at (smaller in size).