https://gcc.gnu.org/bugzilla/show_bug.cgi?id=80928

--- Comment #13 from Christophe Lyon <clyon at gcc dot gnu.org> ---
(In reply to Richard Biener from comment #8)
> Author: rguenth
> Date: Wed Jun  7 09:10:17 2017
> New Revision: 248948
> 
> URL: https://gcc.gnu.org/viewcvs?rev=248948&root=gcc&view=rev
> Log:
> 2017-06-07  Richard Biener  <rguent...@suse.de>
> 
>       PR tree-optimization/80928
>       * gcc.dg/vect/slp-perm-8.c: Avoid vectorizing loop computing
>       check_results.
> 
> Modified:
>     trunk/gcc/testsuite/ChangeLog
>     trunk/gcc/testsuite/gcc.dg/vect/slp-perm-8.c

After, arm and aarch64 regress:
FAIL: gcc.dg/vect/slp-perm-8.c -flto -ffat-lto-objects  scan-tree-dump-times
vect "vectorized 1 loops" 2
FAIL: gcc.dg/vect/slp-perm-8.c scan-tree-dump-times vect "vectorized 1 loops" 2

but these improve:
PASS: gcc.dg/vect/slp-perm-8.c -flto -ffat-lto-objects  scan-tree-dump-times
vect "vectorizing stmts using SLP" 0
PASS: gcc.dg/vect/slp-perm-8.c scan-tree-dump-times vect "vectorizing stmts
using SLP" 0

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