Re: vectorized CRC on ARM64 - Mailing list pgsql-hackers

From John Naylor
Subject Re: vectorized CRC on ARM64
Date
Msg-id CANWCAZaTABWOvdwSHCWuqZs5DPCkKFFcEO5FAVxmhoZ+nnpjhg@mail.gmail.com
Whole thread Raw
In response to Re: vectorized CRC on ARM64  (Nathan Bossart <nathandbossart@gmail.com>)
List pgsql-hackers
On Tue, Apr 7, 2026 at 8:55 PM Nathan Bossart <nathandbossart@gmail.com> wrote:
>
> On Tue, Apr 07, 2026 at 05:02:04PM +0700, John Naylor wrote:
> > Attached is how that would look. The idea is that small inputs will
> > encounter fewer branches. It'd be tricky to prove a difference with a
> > benchmark, and I see this as just making the small-input path more
> > similar to PG 18, as a risk-avoidance maneuver.
>
> Seems fine to me.  I believe we do similar things elsewhere.

Pushed, thanks for looking!

--
John Naylor
Amazon Web Services



pgsql-hackers by date:

Previous
From: John Naylor
Date:
Subject: Re: tuple radix sort
Next
From: Alexander Korotkov
Date:
Subject: Re: Implement waiting for wal lsn replay: reloaded