tree e0df931a3921136fcd552fb9c3d23dcf6e55968d
parent 1e6138c88c7f3bb1f0e8fb785080ac5abc24210c
author Mike Hommey <mh@glandium.org> 1332774221 +0200
committer Jason Evans <jasone@canonware.com> 1332787873 -0700

Use __sync_add_and_fetch and __sync_sub_and_fetch when they are available

These functions may be available as inlines or as libgcc functions. In the
former case, a __GCC_HAVE_SYNC_COMPARE_AND_SWAP_n macro is defined. But we
still want to use these functions in the latter case, when we don't have
our own implementation.