[Bug rtl-optimization/59461] missed zero-extension elimination in the combiner

[rguenth at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=59461

--- Comment #2 from Richard Biener <rguenth at gcc dot gnu.org> ---
I wonder if x86_64 is also affected as it has implicitely zero/sign-extending
loads as well.