There are still room for better vectorization, e.g., v0.asDiagonal() * v1 is not vectorized while it is simply v0.cwiseProduct(v1);
Its better now:
Date: 2013-06-18 17:44:25
Summary: Bug 71: enable vectorization of diagonal products in more cases.
but I think we can even do better with matrices, so let's keep it open.
OK, the problem with matrices is much more general, so let's close this one and start another one.