Horton

Use compiler intrinsics for bit ops in hash

David Fetter <david@fetter.org>

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From: David Fetter <david@fetter.org>
To: PostgreSQL Development <pgsql-hackers@postgresql.org>
Date: 2020-01-14T17:35:53Z
Lists: pgsql-hackers

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Folks,

The recent patch for distinct windowing aggregates contained a partial
fix of the FIXME that didn't seem entirely right, so I extracted that
part, changed it to use compiler intrinsics, and submit it here.

Best,
David.
-- 
David Fetter <david(at)fetter(dot)org> http://fetter.org/
Phone: +1 415 235 3778

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Commits

  1. Modify additional power 2 calculations to use new helper functions

  2. Modify various power 2 calculations to use new helper functions

  3. Add functions to calculate the next power of 2

  4. Move src/backend/utils/hash/hashfn.c to src/common