http://gcc.gnu.org/bugzilla/show_bug.cgi?id=37131
--- Comment #14 from Thomas Koenig <tkoenig at gcc dot gnu.org> 2011-01-02 23:20:07 UTC --- Created attachment 22883 --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=22883 matmul loops that vectorize Here's how we could make the different matmul loops look like for different transpose cases. The inner loops vectorize, at least with --fast-math. The last one needs a different temp strategy for vectorization.