[Bug rtl-optimization/70467] Useless "and [esp],-1" emitted on AND with uint64_t variable

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=70467

--- Comment #6 from Richard Biener <rguenth at gcc dot gnu.org> ---
I would have expected simplify_rtx to eventually handle all interesting cases.