[Bug c/59785] atomic_store should load source operand atomically?

[ma.jiang at zte dot com.cn]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=59785

--- Comment #2 from ma.jiang at zte dot com.cn ---
Ok, Thanks for the reply. I know what you mean. A atomic_store is not
responsible for loading the source operand atomically as it is just a store.