[Bug middle-end/58555] [4.9 Regression] Floating point exception in want_inline_self_recursive_call_p

[hubicka at ucw dot cz]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=58555

--- Comment #13 from Jan Hubicka <hubicka at ucw dot cz> ---
I see, we should just short citcuit case when caller_freq
is 0.  I will test patch.