[Bug tree-optimization/50698] pretending to create versioning for alias when not required

[vincenzo.innocente at cern dot ch]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50698

--- Comment #3 from vincenzo Innocente <vincenzo.innocente at cern dot ch> 
2011-10-12 17:00:40 UTC ---
the patch work for me.
Does not seem to break anything else.
thanks