[Bug libstdc++/51798] [4.7 regression] libstdc++ atomicity performance regression due to __sync_fetch_and_add

[bkoz at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=51798

--- Comment #32 from Benjamin Kosnik <bkoz at gcc dot gnu.org> 2012-02-17 20:52:04 UTC ---
Author: bkoz
Date: Fri Feb 17 20:51:58 2012
New Revision: 184350

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=184350
Log:
2012-02-17  Benjamin Kosnik  <bkoz@redhat.com>

    PR libstdc++/51798 continued.
    * acinclude.m4 (GLIBCXX_ENABLE_ATOMIC_BUILTINS): Grep for
    __atomic_, not __sync.
    * configure: Regenerated.

Modified:
    trunk/libstdc++-v3/ChangeLog
    trunk/libstdc++-v3/acinclude.m4
    trunk/libstdc++-v3/configure