[Bug tree-optimization/127036] [13/14/15/16/17 Regression] wrong code at -O{2, 3} with -fno-vect-cost-model on x86_64-linux-gnu (generated code hangs)

[pinskia at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=127036

--- Comment #3 from Drea Pinski <pinskia at gcc dot gnu.org> ---
-fwrapv cause the hang to go away.