http://gcc.gnu.org/bugzilla/show_bug.cgi?id=48000
--- Comment #1 from Jakub Jelinek <jakub at gcc dot gnu.org> 2011-03-05 23:07:47 UTC --- Created attachment 23555 --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=23555 reginfo.i ./cc1 reginfo.i -quiet -O2 -fprofile-use reproduces this.