[Bug tree-optimization/122273] cselim-limited does not handle some cases where the aliasing seems the same

[pinskia at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=122273

--- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
Note using `-O2  -flifetime-dse=0` is the best way to see this so clobbers
don't get in the way (I have a fix for that which I am testing and ran into
this).