[Bug middle-end/84040] [8 regression] compilation time of gcc.c-torture/compile/limits-blockid.c is 50x slower

[jakub at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84040

--- Comment #7 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Sat Mar  3 13:20:42 2018
New Revision: 258177

URL: https://gcc.gnu.org/viewcvs?rev=258177&root=gcc&view=rev
Log:
        Backported from mainline
        2018-01-27  Jakub Jelinek  <jakub@redhat.com>

        PR middle-end/84040
        * sched-deps.c (sched_macro_fuse_insns): Return immediately if
        !insn_set.

Modified:
    branches/gcc-7-branch/gcc/ChangeLog
    branches/gcc-7-branch/gcc/sched-deps.c