I happened to notice by chance that John Naylor had posted an extension to measure performance of popcount here: https://postgr.es/m/CAFBsxsE7otwnfA36Ly44zZO+b7AEWHRFANxR1h1kxveEV=g...@mail.gmail.com
This might be useful as a base for a new one to verify the results of the proposed patch in machines with relevant instruction support. -- Álvaro Herrera 48°01'N 7°57'E — https://www.EnterpriseDB.com/ "We're here to devour each other alive" (Hobbes)
