[Bug ipa/66751] Inline optimizes away function, keeping call to it in code

[pinskia at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66751

--- Comment #2 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
GNU 90 vs C99/C11 inline semantics. 

The default standard changed.