[Bug middle-end/67401] Incorrect expand of __atomic_compare_exchange_8 using __sync_val_compare_and_swap_8

[danglin at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=67401

--- Comment #1 from John David Anglin <danglin at gcc dot gnu.org> ---
Patch here:
https://gcc.gnu.org/ml/gcc-patches/2015-09/msg00755.html