revert: bring back usage of `subset & ps` in `parents`...
revert: bring back usage of `subset & ps` in `parents`
Changeset
95af98616aa7 switched the order of the operand of the "&" computation
to work around an issue from repo-wide spanset. The need for a workaround has been
alleviated by the introduction of `fullreposet`. So we restore it to normal.
The benchmark shows no significant changes as expected.
We also revert the bogus test change introduced by 95af98616aa7. The order is
actually important.