[Bug middle-end/41969] [LTO] 23% slow-down with -flto -fwhole-program

[hubicka at ucw dot cz]

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