http://gcc.gnu.org/bugzilla/show_bug.cgi?id=51119
--- Comment #6 from Joost VandeVondele <Joost.VandeVondele at mat dot ethz.ch> 2012-06-28 11:58:20 UTC --- Janne, have you had a chance to look at this ? For larger matrices MATMMUL is really slow. Anything that includes even the most basic blocking scheme should be faster. I think this would be a valuable improvement.