[Bug tree-optimization/118297] not vecotrizing some code

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=118297

Andrew Pinski <pinskia at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Target|                            |x86_64
            Summary|vect_analyze_loop_form gets |not vecotrizing some code
                   |confused by outer loop that |
                   |only executes its body once |
           Keywords|                            |missed-optimization

--- Comment #2 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
SLP does vectorize it but only with -fno-vect-cost-model.  So I suspect this is
a cost model issue.

Note for aarch64, -fno-vect-cost-model is needed too.