------- Comment #19 from rguenth at gcc dot gnu dot org 2008-01-07 14:32 ------- -fno-tree-loop-optimize reduces compile-time of this testcase from 117s to 35s with -O -fstrict-aliasing. try_unroll_loop_completely calls update_ssa, for every loop unrolled, added by r98599, which seems to be necessary - mainly because of the interesting PHI redirect re-use of PENDING_STMT.
-- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=34683
