------- Comment #2 from rguenth at gcc dot gnu dot org 2006-03-30 12:31 ------- You can see that PRE makes a mess out of it because of the copied loop header of the inner loop. So maybe Zdeneks patch to move the loop header copy outside of the first loop helps here. Though I'd prefer to prevent PRE from doing the transformation here. Danny, any ideas?
-- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=26939