Thread: pgsql: Use direct function calls for pg_popcount{32,64} on non-x86 plat

Use direct function calls for pg_popcount{32,64} on non-x86 platforms

Previously, all pg_popcount{32,64} calls were indirected through
a function pointer, even though we had no fast implementation for
non-x86 platforms. Instead, for those platforms use wrappers around
the pg_popcount{32,64}_slow functions.

Review and additional hacking by David Rowley
Reviewed by Álvaro Herrera

Discussion:
https://www.postgresql.org/message-id/flat/CAFBsxsE7otwnfA36Ly44zZO%2Bb7AEWHRFANxR1h1kxveEV%3DghLQ%40mail.gmail.com

Branch
------
master

Details
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https://git.postgresql.org/pg/commitdiff/4864c8e8f184a35ed1c2c51a15e9a455e9fbb398

Modified Files
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src/include/port/pg_bitutils.h | 32 +++++++++++++++++++++++++++-
src/port/pg_bitutils.c         | 48 +++++++++++++++++++-----------------------
2 files changed, 53 insertions(+), 27 deletions(-)