http://gcc.gnu.org/bugzilla/show_bug.cgi?id=45652
--- Comment #6 from Richard Guenther <rguenth at gcc dot gnu.org> 2010-11-17 14:08:01 UTC --- (In reply to comment #5) > P1 sounds a little overrated, it's a specialized option and an artificial > test. > Only IA-64 really uses this thing, right? All regressions towards the last release on primary or secondary targets are P1 if they do not involve invalid source or checking-only problems.