https://gcc.gnu.org/bugzilla/show_bug.cgi?id=97480
--- Comment #1 from H.J. Lu <hjl.tools at gmail dot com> ---
It is caused by r11-3998:
commit 540d5f4f0215e1cdd2d4a2c89c65e46033298be0
Author: Richard Biener <rguent...@suse.de>
Date: Wed Oct 14 15:37:51 2020 +0200
Refactor vect_get_and_check_slp_defs some more
This refactors vect_get_and_check_slp_defs so that the ops and def_stmts
arrays are filled for all stmts and operands even when we signal failure.
This allows later changes for BB vectorization SLP discovery heuristics.
2020-10-16 Richard Biener <rguent...@suse.de>
* tree-vect-slp.c (vect_get_and_check_slp_defs): First analyze
all operands and fill in the def_stmts and ops entries.
(vect_def_types_match): New helper.
