http://gcc.gnu.org/bugzilla/show_bug.cgi?id=45122
--- Comment #6 from Alexandre Oliva <aoliva at gcc dot gnu.org> 2011-01-16 08:13:44 UTC --- Created attachment 22978 --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=22978 Patch that fixes the problem by discarding too unsafe optimizations When there's more than one exit from the loop, discarding the assumptions for the trip count to apply might be regarded as a bit too unsafe, as in this particular case. This candidate patch disables the assumption entirely, and disables the -Wunsafe-loop-optimizations warnings the loop exits would produce, since -funsafe-loop-optimizations wouldn't affect them any longer.
