------- Comment #16 from jakub at gcc dot gnu dot org 2007-10-28 19:42 ------- Haven't analyzed why exactly there are so many more safe_group_barrier_needed calls, but they are certainly much more common than direct group_barrier_needed calls on this testcase (14579701 safe_group_barrier_needed calls, 14604168 group_barrier_needed calls). But if so, the only thing that call cares about is the return value, all the state is thrown away. From what I see the need_barrier retval is ored together from all the recursive calls, couldn't we gain something by just returning 1 immediately whenever one of the recursive calls returned non-zero?
-- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=33922
