So far only for fastdg. This should also happen in the non-fastdg case.

Note: They are not yet used but in the long term the permutation should be
handled here since it is about input/output setup.

Note:

- direct_is_possible true/false could probably be handled in an upper/lower
  vectorization way.

- Vectorization of SF kernels should be based on cost permuted matrix sequence.

By looking at the possible values of the condition.

I have a case where visiting has a side effect that I want to avoid.
Also spares work.