[Bug target/101543] extra zeroing of empty struct argument/return value

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=101543

--- Comment #2 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
Note RTL optimizers don't like registers being uninitilized but maybe there is
way to do it ...