http://gcc.gnu.org/bugzilla/show_bug.cgi?id=56756
--- Comment #7 from rguenther at suse dot de <rguenther at suse dot de> 2013-03-28 10:26:48 UTC --- On Thu, 28 Mar 2013, mpolacek at gcc dot gnu.org wrote: > > http://gcc.gnu.org/bugzilla/show_bug.cgi?id=56756 > > --- Comment #6 from Marek Polacek <mpolacek at gcc dot gnu.org> 2013-03-28 > 10:11:55 UTC --- > FWIW, started with > http://gcc.gnu.org/viewcvs/gcc?view=revision&revision=196769 Yes, I was expecting that. This orders blocks in a different "random" order when visiting dominator children. It tries to order them in inverted postorder - which is exactly deterministically "wrong" for LIM, as it visits loop blocks with a loop exit edge last.
