[Bug tree-optimization/116768] [12/13/14/15 regression] Strict aliasing breaks autovectorization with -O3

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=116768

--- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
 -fno-vect-cost-model hides it