https://gcc.gnu.org/bugzilla/show_bug.cgi?id=87657
--- Comment #2 from ro at CeBiTec dot Uni-Bielefeld.DE <ro at CeBiTec dot
Uni-Bielefeld.DE> ---
This looks like it could be due to
2018-10-18 Richard Biener <rguent...@suse.de>
* config/i386/i386.c (ix86_builtin_vectorization_cost): Do not
feed width-specific load/store costs through ix86_vec_cost.
* config/i386/x86-tune-costs.h (athlon_cost): Adjust.
(k8_cost): Likewise.
(bdver_cost): Likewise.
(znver1_cost): Likewise.
(btver1_cost): Likewise.
(btver2_cost): Likewise.
