[Bug rtl-optimization/82396] [8 Regression] qsort comparator non-negative on sorted output: 4 in ready_sort_real in haifa scheduler

[wilco at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=82396

--- Comment #12 from Wilco <wilco at gcc dot gnu.org> ---
(In reply to Qing Zhao from comment #11)
> I am seeing the exactly same issue on aarch64 today (10/5/2017) as comment
> 10.

It works if you apply my patch or replace qsort with (qsort) in
gcc/haifa-sched.c.