[Bug target/54087] __atomic_fetch_add does not use xadd instruction

[ubizjak at gmail dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=54087

--- Comment #2 from Uros Bizjak <ubizjak at gmail dot com> 2012-07-24 19:22:00 UTC ---
(In reply to comment #1)
> Use __atomic_add_fetch and __atomic_fetch_sub in the testcase, and you will

Eh, __atomic_fetch_add.