http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49533
--- Comment #1 from Jan Hubicka <hubicka at gcc dot gnu.org> 2011-06-27 10:13:34 UTC --- The patch you quote has the effect of disabling pure const discovery for functions calling functions with an aliases defined. It is quite surprising that this does make a difference, but I still think this is most likely effect of PR47247. The COMDAT problem causes inline functions with address taken to not be optimized when their address is taken and indirect call profiling takes address of all virtuals. Carry made an gold update that will hopefully hit the CVS binutils soonish and I will update then the GCC side. Until that happens, I would advice using -fprofile-generate -fno-lto (i.e. LTO is not needed for the instrumented compiler). Honza
