http://gcc.gnu.org/bugzilla/show_bug.cgi?id=41969
--- Comment #7 from Jan Hubicka <hubicka at ucw dot cz> 2012-04-30 00:39:08 UTC --- It doesn't help to attach this into a closed bugreport. LTO allows GCC to do a lot more transformations and sometime the transformations hurts the final performance. This is a bug and we will try to fix it. >From information you gave it is however impossible to guess what may possibly go wrong. If you provide some more analysis about why your program gets slower and attach it into a (new) PR, we will try to take a look. Honza
