[Bug tree-optimization/116654] [15 regression] many vector test case failures after r15-3509-gd34cda72098867

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=116654

--- Comment #4 from GCC 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:e592ea8ddffb44bab52d36d9862bb39ffae4d144

commit r15-4004-ge592ea8ddffb44bab52d36d9862bb39ffae4d144
Author: Richard Biener <rguent...@suse.de>
Date:   Tue Oct 1 15:17:18 2024 +0200

    tree-optimization/116654 - missed dr_explicit_realign[_optimized] with SLP

    With single-lane SLP we miss to use the power realing loads causing
    some testsuite FAILs.  r14-2430-g4736ddd11874fe exempted SLP of
    non-grouped accesses because that could have been only splats
    where the scheme isn't used anyway, but now with single-lane SLP
    it can be contiguous accesses.

            PR tree-optimization/116654
            * tree-vect-data-refs.cc (vect_supportable_dr_alignment):
            Treat non-grouped accesses like non-SLP.