[Bug tree-optimization/103544] [11 Regression] compiler crashes when trying to vectorize loop

[cvs-commit at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=103544

--- Comment #10 from CVS Commits <cvs-commit at gcc dot gnu.org> ---
The releases/gcc-11 branch has been updated by Richard Biener
<rguenth@gcc.gnu.org>:

https://gcc.gnu.org/g:c08d4266e48d52b7f8d16c79d3471be40ff56acc

commit r11-9585-gc08d4266e48d52b7f8d16c79d3471be40ff56acc
Author: Richard Biener <rguenther@suse.de>
Date:   Tue Jan 4 10:12:47 2022 +0100

    tree-optimization/103864 - SLP reduction of reductions with conversions

    This generalizes the fix for PR103544 to also cover reductions that
    are not reduction chains and does not consider reductions wrapped in
    sign conversions for SLP reduction handling.

    2022-01-04  Richard Biener  <rguenther@suse.de>

            PR tree-optimization/103864
            PR tree-optimization/103544
            * tree-vect-slp.c (vect_analyze_slp_instance): Exclude
            reductions wrapped in conversions from SLP handling.
            (vect_analyze_slp): Revert PR103544 change.

            * gcc.dg/vect/pr103864.c: New testcase.

    (cherry picked from commit 1a15451da14410bf2bd6ec8f5baba1014638c67a)