[Bug ipa/65701] r221530 makes 187.facerec drop with -Ofast -flto

[hubicka at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65701

--- Comment #3 from Jan Hubicka <hubicka at gcc dot gnu.org> ---
Yep, I looked into this regression a bit.  The patch just avoids some "false
positives" of inlining functions called once (i.e. case where we think the
function will optimize out but it really won't so we end up with duplication)
and also some "false negatives".
As such, it can affect pretty large functions to be or not be inlined. I will
oprofile to figure out which one it is here.