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

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

--- Comment #68 from mwahab at gcc dot gnu.org ---
Author: mwahab
Date: Wed Aug  5 11:40:25 2015
New Revision: 226620

URL: https://gcc.gnu.org/viewcvs?rev=226620&root=gcc&view=rev
Log:
        Backport from trunk.
        2015-06-01  Matthew Wahab  <matthew.wahab@arm.com>

        PR target/65697
        * config/aarch64/aarch64.c (aarch64_split_compare_and_swap): Check
        for __sync memory models, emit initial loads and final barriers as
        appropriate.


Modified:
    branches/gcc-5-branch/gcc/ChangeLog
    branches/gcc-5-branch/gcc/config/aarch64/aarch64.c
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