predicate to decide whether to set CR Fields to `(mask & ~mode)`
or to zero. Thus, in effect, it is the integer predicate that has
been copied into the CR Fields.
+
+By using twin predication, zeroing, and inversion (sm=~r3, dm=r10) for example, it becomes possible to combine two Integers together in
+order to set bits in CR Fields.
+Likewise there are dozens of ways that CR Predicates can be used, on the
+same sv.mtcrweird instruction.