Re: [PATCH] Hex-coding optimizations using SVE on ARM.

Nathan Bossart <nathandbossart@gmail.com>

From: Nathan Bossart <nathandbossart@gmail.com>

To: John Naylor <johncnaylorls@gmail.com>

Cc: "Chiranmoy.Bhattacharya@fujitsu.com" <Chiranmoy.Bhattacharya@fujitsu.com>, Tom Lane <tgl@sss.pgh.pa.us>, David Rowley <dgrowleyml@gmail.com>, "pgsql-hackers@postgresql.org" <pgsql-hackers@postgresql.org>, "Devanga.Susmitha@fujitsu.com" <Devanga.Susmitha@fujitsu.com>, "Ragesh.Hajela@fujitsu.com" <Ragesh.Hajela@fujitsu.com>

Date: 2025-10-03T20:33:21Z

Lists: pgsql-hackers

Commits

Same data as JSON: GET /api/v1/messages/:b64id/commits the thread's linked commits as JSON, with link sources. API reference →

Optimize hex_encode() and hex_decode() using SIMD.
- ec8719ccbfcd 19 (unreleased) landed
Speed up hex_encode with bytewise lookup
- e24d77080b36 18.0 landed

Attachments

v14-0001-Optimize-hex_encode-and-hex_decode-using-SIMD.patch (text/plain)

On Fri, Oct 03, 2025 at 02:36:47PM +0700, John Naylor wrote:
> LGTM, but I went back and checked if vector8_zero() actually does
> anything different than vector8_boadcast(0), and in fact it doesn't on
> compilers we support for either x86 or Arm. I pulled the former out
> from older work, but it seems irrelevant now. Pardon the noise.

Here is what I have staged for commit.

-- 
nathan