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help / color / mirror / Atom feedFrom: Nathan Bossart <[email protected]>
To: [email protected] <[email protected]>
Cc: Tom Lane <[email protected]>
Cc: John Naylor <[email protected]>
Cc: David Rowley <[email protected]>
Cc: [email protected] <[email protected]>
Cc: [email protected] <[email protected]>
Cc: [email protected] <[email protected]>
Subject: Re: [PATCH] Hex-coding optimizations using SVE on ARM.
Date: Mon, 22 Sep 2025 15:05:44 -0500
Message-ID: <aNGsGMowsTwd5_aY@nathan> (raw)
In-Reply-To: <aMSQ7ackQO-P7T3S@nathan>
References: <OS9PR01MB15185626CA7C6EAF82C93ABA3974FA@OS9PR01MB15185.jpnprd01.prod.outlook.com>
<TY4PR01MB15177710A7DF163A8536F26289701A@TY4PR01MB15177.jpnprd01.prod.outlook.com>
<CANWCAZZm4zwAFmy6M32Sj2BfDg8ZjEV4TJ0YwBQewjV=AUY1Qw@mail.gmail.com>
<OS9PR01MB15185B278E343A9BA5F0F6AB19700A@OS9PR01MB15185.jpnprd01.prod.outlook.com>
<aMI-NF6KLc1x1pko@nathan>
<OS9PR01MB1518513BA12A54A243342A2999709A@OS9PR01MB15185.jpnprd01.prod.outlook.com>
<aMLpq9_wOz_tnHmm@nathan>
<[email protected]>
<OS9PR01MB1518531C5857F194371EBCA329708A@OS9PR01MB15185.jpnprd01.prod.outlook.com>
<aMSQ7ackQO-P7T3S@nathan>
On Fri, Sep 12, 2025 at 04:30:21PM -0500, Nathan Bossart wrote:
> I've attached a new version of the patch with a simd.h version of
> hex_decode(). Here are the numbers:
I was able to improve the hex_decode() implementation a bit.
arm
buf | HEAD | patch | % diff
-------+-------+-------+--------
16 | 11 | 11 | 0
64 | 38 | 7 | 82
256 | 133 | 18 | 86
1024 | 513 | 67 | 87
4096 | 2037 | 271 | 87
16384 | 8326 | 1103 | 87
65536 | 34550 | 4475 | 87
x86
buf | HEAD | patch | % diff
-------+-------+-------+--------
16 | 8 | 9 | -13
64 | 38 | 7 | 82
256 | 121 | 24 | 80
1024 | 457 | 91 | 80
4096 | 1797 | 356 | 80
16384 | 7161 | 1411 | 80
65536 | 28620 | 5632 | 80
--
nathan
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To: [email protected]
Cc: [email protected], [email protected], [email protected], [email protected], [email protected], [email protected], [email protected]
Subject: Re: [PATCH] Hex-coding optimizations using SVE on ARM.
In-Reply-To: <aNGsGMowsTwd5_aY@nathan>
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