> emit_merge_op can not be wrapped into binop since mask position is > different in pattern. > > I prefer merge op in different wrapper.
Yes, I didn't mean literally the same but that things already become a bit confusing with all the different variants and bool arguments or code duplication with slight differences. Something like foo (true, false, true) is a bit of a code smell. Nothing to address immediately, I just need to keep an eye on it. Shouldn't prevent the patch from going in.
