Force ret to be at the end of a function

[Wei Qin]

Hello,

I notice that gcc sometimes places the "ret" instruction in the middle
of a function, or sometimes emits multiple "ret" instructions for a
function. For some reason, I wish that my gcc emits only one  "ret" at
the end of a function. Is there a gcc switch to force that without
disabling optimization?

Thank you,

Weiqin