http://gcc.gnu.org/bugzilla/show_bug.cgi?id=45375
--- Comment #173 from Jan Hubicka <hubicka at ucw dot cz> 2013-01-17 12:30:30 UTC --- > Patch looks incomplete? What does dropping columns only do to memory use? I will check. I remember that prior columns there was also some savings for the cache. Just saving 20% out of 23% is cooler than saving 20% out of 5% of memory. Note that we are still over 8GB for Mozilla LTO after latest Mozilla checkout. > Please disable flag_diagnostics_show_caret unconditionally in lto1 if you > do that. Yeah, I wanted, but I am not sure where in lto.c is proper place to do so?