Since we now have several implementations of the popcount functions, let's give them more descriptive names. This commit replaces "slow" with "portable" and "fast" with "sse42". While the POPCNT instruction is technically not part of SSE4.2, this naming scheme is close enough in practice and is arguably easier to understand than using "popcnt" instead. Reviewed-by: John Naylor <johncnaylorls@gmail.com> Reviewed-by: Heikki Linnakangas <hlinnaka@iki.fi> Discussion: https://postgr.es/m/aWf_InS1VrbeXAfP%40nathan
PostgreSQL Database Management System
This directory contains the source code distribution of the PostgreSQL database management system.
PostgreSQL is an advanced object-relational database management system that supports an extended subset of the SQL standard, including transactions, foreign keys, subqueries, triggers, user-defined types and functions. This distribution also contains C language bindings.
Copyright and license information can be found in the file COPYRIGHT.
General documentation about this version of PostgreSQL can be found at https://www.postgresql.org/docs/devel/. In particular, information about building PostgreSQL from the source code can be found at https://www.postgresql.org/docs/devel/installation.html.
The latest version of this software, and related software, may be obtained at https://www.postgresql.org/download/. For more information look at our web site located at https://www.postgresql.org/.