[Bug rtl-optimization/63384] scheduler loops on endless fence list with -fselective-scheduling2 on x86

[abel at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=63384

--- Comment #6 from Andrey Belevantsev <abel at gcc dot gnu.org> ---
Author: abel
Date: Tue Mar 15 15:25:41 2016
New Revision: 234217

URL: https://gcc.gnu.org/viewcvs?rev=234217&root=gcc&view=rev
Log:
gcc/

        PR rtl-optimization/63384
        * sel-sched.c (invoke_aftermath_hooks): Do not decrease issue_more
        on DEBUG_INSN_P insns.

testsuite/

        PR rtl-optimization/63384
        * g++.dg/pr63384.C: New test. 

Added:
    trunk/gcc/testsuite/g++.dg/pr63384.C
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/sel-sched.c
    trunk/gcc/testsuite/ChangeLog