http://gcc.gnu.org/bugzilla/show_bug.cgi?id=59409
--- Comment #3 from H.J. Lu <hjl.tools at gmail dot com> --- slpeel_tree_peel_loop_to_edge has comments: The first guard is: if (FIRST_NITERS == 0) then skip the first loop, and go directly to the second loop. This is removed by r205730.