[Bug target/64215] -Os misses an opportunity to merge two ret instructions

[pinskia at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64215

--- Comment #3 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
Hmm, I thought this would have been fixed by r13-2871-g1b74b5cb4e9d71 but it
was not ...