https://gcc.gnu.org/bugzilla/show_bug.cgi?id=94298
--- Comment #4 from rguenther at suse dot de <rguenther at suse dot de> --- On Tue, 24 Mar 2020, ubizjak at gmail dot com wrote: > https://gcc.gnu.org/bugzilla/show_bug.cgi?id=94298 > > --- Comment #3 from Uroš Bizjak <ubizjak at gmail dot com> --- > (In reply to rguent...@suse.de from comment #2) > > > So I wonder whether the bug is that there is a memory alternative > > in the first place? > > Memory alternative should be OK, we do have insns that access memory. Perhaps > vec_interleave_high/vec_interleave_low shouldn't be used by middel end in this > particular case? It's going through the generic vec_perm_const expander.