2014-01-25  Walter Lee  <walt@tilera.com>

            * config/tilegx/tilegx-c.c (tilegx_cpu_cpp_builtins): 
            Define __GCC_HAVE_SYNC_COMPARE_AND_SWAP_{1,2}.
            * config/tilegx/tilepro-c.c (tilepro_cpu_cpp_builtins): 
            Define __GCC_HAVE_SYNC_COMPARE_AND_SWAP_{1,2,4,8}.

From-SVN: r207083