Re: refactor architecture-specific popcount code
Nathan Bossart <nathandbossart@gmail.com>
From: Nathan Bossart <nathandbossart@gmail.com>
To: Greg Burd <greg@burd.me>
Cc: John Naylor <johncnaylorls@gmail.com>, Heikki Linnakangas <hlinnaka@iki.fi>, pgsql-hackers <pgsql-hackers@postgresql.org>
Date: 2026-02-03T22:42:53Z
Lists: pgsql-hackers
Attachments
Sorry for the noise. cfbot dislikes the lack of parentheses in pg_popcount32(). -- nathan
Commits
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Make use of pg_popcount() in more places.
- f33b8793fd73 19 (unreleased) landed
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Remove uses of popcount builtins.
- eb9ab7e0930a 19 (unreleased) landed
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Remove some unnecessary optimizations in popcount code.
- cb7b2e5e8efb 19 (unreleased) landed
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Remove specialized word-length popcount implementations.
- a4688988835f 19 (unreleased) landed
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Move x86-64-specific popcount code to pg_popcount_x86.c.
- 79e232ca013c 19 (unreleased) landed
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Refactor some SIMD and popcount macros.
- 25dc4850747b 19 (unreleased) landed
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Rename "fast" and "slow" popcount functions.
- 8c6653516c5a 19 (unreleased) landed
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Rename pg_popcount_avx512.c to pg_popcount_x86.c.
- fbe327e5b465 19 (unreleased) landed
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Remove trailing zero words from Bitmapsets
- a8c09daa8bb1 17.0 cited
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Don't use _BitScanForward64/_BitScanReverse64 on 32-bit MSVC builds
- 53ea2b7ad050 16.0 cited