https://gcc.gnu.org/bugzilla/show_bug.cgi?id=105463
--- Comment #5 from Alex Coplan <acoplan at gcc dot gnu.org> ---
FWIW (which is probably not much) with -O3 the problem started with
r11-3681-g29c650cd899496c4f9bc069d03d0d7ecfb632176 .
commit 29c650cd899496c4f9bc069d03d0d7ecfb632176
Author: Dennis Zhang <dennis...@live.com>
Date: Tue Oct 6 16:53:46 2020
arm: Enable MVE SIMD modes for vectorization
But I suppose the underlying issue is likely still latent (to do with the
movmisalign pattern as richi mentioned above).
