[Bug target/62642] [4.8/4.9 Regression] x86 rdtsc is moved through barrier

[jakub at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=62642

--- Comment #9 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Fri Jun 12 11:54:43 2015
New Revision: 224420

URL: https://gcc.gnu.org/viewcvs?rev=224420&root=gcc&view=rev
Log:
        Backported from mainline
        2014-12-15  Vladimir Makarov  <vmakarov@redhat.com>

        PR target/62642
        * ira.c (rtx_moveable_p): Prevent UNSPEC_VOLATILE moves.

Modified:
    branches/gcc-4_9-branch/gcc/ChangeLog
    branches/gcc-4_9-branch/gcc/ira.c