------- Comment #7 from paolo dot carlini at oracle dot com 2010-01-28 17:51 ------- I don't know the details frankly, but at minimum we should be *very* careful and make sure we do the right thing also in the special cases, eg, on i386 when the atomic builtins are not available.
-- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=34106