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Re: [PATCH] Hex-coding optimizations using SVE on ARM. - Mailing list pgsql-hackers

From Nathan Bossart
Subject Re: [PATCH] Hex-coding optimizations using SVE on ARM.
Date
Msg-id Z4E-5oQGux-2R4iL@nathan
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In response to Re: [PATCH] Hex-coding optimizations using SVE on ARM.  ("Chiranmoy.Bhattacharya@fujitsu.com" <Chiranmoy.Bhattacharya@fujitsu.com>)
Responses Re: [PATCH] Hex-coding optimizations using SVE on ARM.
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On Fri, Jan 10, 2025 at 11:10:03AM +0000, Chiranmoy.Bhattacharya@fujitsu.com wrote:
> We tried auto-vectorization and observed no performance improvement.

Do you mean that the auto-vectorization worked and you observed no
performance improvement, or the auto-vectorization had no effect on the
code generated?

> The instructions in src/include/port/simd.h are based on older SIMD
> architectures like NEON, whereas the patch uses the newer SVE, so some of
> the instructions used in the patch may not have direct equivalents in
> NEON. We will check the feasibility of integrating SVE in
> "src/include/port/simd.h" and get back to you.

Thanks!

-- 
nathan

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