[Bug target/65697] __atomic memory barriers not strong enough for __sync builtins

[mwahab at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65697

--- Comment #71 from mwahab at gcc dot gnu.org ---
Author: mwahab
Date: Wed Aug  5 13:40:14 2015
New Revision: 226627

URL: https://gcc.gnu.org/viewcvs?rev=226627&root=gcc&view=rev
Log:
        Backport from trunk:
        2015-06-29  Matthew Wahab  <matthew.wahab@arm.com>

        PR target/65697
        * config/arm/arm.c (arm_split_compare_and_swap): For ARMv8,
        replace an initial acquire barrier with final barrier.


Modified:
    branches/gcc-5-branch/gcc/ChangeLog
    branches/gcc-5-branch/gcc/config/arm/arm.c