[Bug bootstrap/65150] [5 Regression] r220875 causes bootstrap failure on x86_64 darwin

[hubicka at ucw dot cz]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65150

--- Comment #19 from Jan Hubicka <hubicka at ucw dot cz> ---
Hi,
I went in detail through the icf's merge functions and found quite few corner
cases where it may
lead to wrong code and some confussion.  This is my current patch I am testing.

Honza