vuq __builtin_vec_msum (vull, vull, vuq);
VMSUMUDM VMSUMUDM_U
+[VEC_MSUMC, vec_msumc, __builtin_vec_msumc]
+ vuq __builtin_vec_msumc (vull, vull, vuq);
+ VMSUMCUD
+
[VEC_MSUMS, vec_msums, __builtin_vec_msums]
vui __builtin_vec_msums (vus, vus, vui);
VMSUMUHS