http://gcc.gnu.org/bugzilla/show_bug.cgi?id=51258
--- Comment #5 from Uros Bizjak <ubizjak at gmail dot com> 2011-11-22 18:52:56 UTC --- (In reply to comment #4) > so something in the config/i386/sync.md file must be wrong for a 32 bit > compiler which specifies -m64. It does not set up the optab table for a TI > mode compare_and_swap. -mcx16 ?