UCT_ATOMIC_OP_XOR   21 opal/mca/btl/uct/btl_uct_amo.c     [MCA_BTL_ATOMIC_XOR] = UCT_ATOMIC_OP_XOR + 1,
UCT_ATOMIC_OP_XOR   65 opal/mca/btl/uct/btl_uct_tl.c     {UCS_BIT(UCT_ATOMIC_OP_XOR), MCA_BTL_ATOMIC_SUPPORTS_XOR},