[Bug tree-optimization/105219] [12 Regression] SVE: Wrong code with -O3 -msve-vector-bits=128 -mtune=thunderx

[cvs-commit at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=105219

--- Comment #19 from CVS Commits <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by Richard Biener <rguenth@gcc.gnu.org>:

https://gcc.gnu.org/g:f27848a5dc4d3b16cd4112bddcb59e0916eba623

commit r12-8297-gf27848a5dc4d3b16cd4112bddcb59e0916eba623
Author: Richard Biener <rguenther@suse.de>
Date:   Wed Apr 27 14:06:12 2022 +0200

    tree-optimization/105219 - bogus max iters for vectorized epilogue

    The following makes sure to take into account prologue peeling
    when trying to narrow down the maximum number of iterations
    computed for the vectorized epilogue.  A similar issue exists when
    peeling for gaps.

    2022-04-27  Richard Biener  <rguenther@suse.de>

            PR tree-optimization/105219
            * tree-vect-loop.cc (vect_transform_loop): Disable
            special code narrowing the vectorized epilogue max
            iterations when peeling for alignment or gaps was in effect.

            * gcc.dg/vect/pr105219.c: New testcase.