[Bug tree-optimization/97733] [11 Regression] internal compiler error: in operator[], at vec.h:880 with "-O1 -fno-toplevel-reorder -fno-tree-bit-ccp -fno-tree-dce -fno-tree-dominator-opts -fno-tree-scev-cprop -ftree-loop-vectorize -ftree-pre"

[cvs-commit at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=97733

--- Comment #3 from CVS Commits <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by Richard Biener <rgue...@gcc.gnu.org>:

https://gcc.gnu.org/g:2210bf6dec4a9868c828af546890805cac353f84

commit r11-4767-g2210bf6dec4a9868c828af546890805cac353f84
Author: Richard Biener <rguent...@suse.de>
Date:   Fri Nov 6 08:34:16 2020 +0100

    tree-optimization/97733 - fix SLP of reductions with zero relevant

    This adds a missing check.

    2020-11-06  Richard Biener  <rguent...@suse.de>

            PR tree-optimization/97733
            * tree-vect-slp.c (vect_analyze_slp_instance): If less
            than two reductions were relevant or live do nothing.