http://gcc.gnu.org/bugzilla/show_bug.cgi?id=59539
--- Comment #7 from Uroš Bizjak <ubizjak at gmail dot com> --- (In reply to Jakub Jelinek from comment #6) > Created attachment 31464 [details] > gcc49-pr59539.patch > > So like this instead? The half-merged AVX512f support makes any changes > hard, it isn't clear if the masked variant will be needed or not, but it > can't be handled that easily, so I've kept it in the expander name for now, > just don't optimize it. Yes, but why you use misaligned_operand check? This check is used in move patterns to generate movu insn *instead of* mova. I guess that we can skip this check entirely.