[Bug tree-optimization/115864] right shift being optimised out incorrectly

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=115864

--- Comment #5 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
Well just use:
((unsigned)al)*((unsigned)bh)