BillyONeal added a comment. (sorry for double post)
And of course since you folks don't care about supporting pre-Vista you probably also don't care about supporting Opterons from 2005, in which case you'd want unconditional cmpxchg16b on amd64 :). In our next major version I added a configuration macro `_STD_ATOMIC_ALWAYS_USE_CMPXCHG16B` users can set to ask for that. https://reviews.llvm.org/D32265 _______________________________________________ cfe-commits mailing list cfe-commits@lists.llvm.org http://lists.llvm.org/cgi-bin/mailman/listinfo/cfe-commits
