From: "Rémi Denis-Courmont" <remi@remlab.net>
To: FFmpeg development discussions and patches <ffmpeg-devel@ffmpeg.org>
Subject: Re: [FFmpeg-devel] [PATCH 2/2] lavc/vc1dsp: R-V V mspel_pixels
Date: Thu, 07 Mar 2024 20:55:03 +0200
Message-ID: <2096762.rT49G5IHzF@basile.remlab.net> (raw)
In-Reply-To: <CAEa-L+v3esK2cumf+xaB8H9xvhxp7C8SNVKUsR7qnphHBszRPg@mail.gmail.com>
Le lauantaina 2. maaliskuuta 2024, 14.06.13 EET flow gg a écrit :
> Here adjusting the order, rather than simply using .rept, will be 13%-24%
> faster.
Isn't it also faster to max LMUL for the adds here?
Also this might not be much noticeable on C908, but avoiding sequential
dependencies on the address registers may help. I mean, avoid using as address
operand a value that was calculated by the immediate previous instruction.
--
Rémi Denis-Courmont
http://www.remlab.net/
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next prev parent reply other threads:[~2024-03-07 18:55 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-03-02 12:06 flow gg
2024-03-07 18:55 ` Rémi Denis-Courmont [this message]
2024-03-08 0:45 ` flow gg
2024-03-08 9:08 ` Rémi Denis-Courmont
2024-03-08 9:46 ` flow gg
2024-04-07 5:38 ` flow gg
2024-04-28 18:06 ` Rémi Denis-Courmont
2024-04-29 7:09 ` flow gg
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