[Bug rtl-optimization/83513] [8 Regression] ICE: qsort checking failed (error: qsort comparator non-negative on sorted output: 3) in fill_vec_av_set in selective scheduler

[amonakov at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=83513

--- Comment #5 from Alexander Monakov <amonakov at gcc dot gnu.org> ---
Author: amonakov
Date: Tue Dec 26 14:34:33 2017
New Revision: 256001

URL: https://gcc.gnu.org/viewcvs?rev=256001&root=gcc&view=rev
Log:
sel-sched: fix zero-usefulness case in sel_rank_for_schedule (PR 83513)

        PR rtl-optimization/83513
        * sel-sched.c (sel_rank_for_schedule): Order by non-zero usefulness
        before priority comparison.

Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/sel-sched.c