Revert "do not pick full-packet if it'd result in more operations" This reverts commit e9cc0cd353803a818204e48054bd89699b84e6c6
Eigen is a C++ template library for linear algebra: matrices, vectors, numerical solvers, and related algorithms.
For more information go to http://eigen.tuxfamily.org/.
For pull request, bug reports, and feature requests, go to https://gitlab.com/libeigen/eigen.