From: James Darnley <jdarnley@obe.tv>
To: ffmpeg-devel@ffmpeg.org
Subject: Re: [FFmpeg-devel] [PATCH] RFC: v210enc optimisations and initial AVX-512
Date: Wed, 26 Oct 2022 15:51:15 +0200
Message-ID: <d24e3c2d-9877-2dff-4b49-c85cfed16df5@obe.tv> (raw)
In-Reply-To: <CAFGUN0oz=0+W2tduWiVN0whryBm9r-DqmEVCsLCcYq8Dx5Pd8Q@mail.gmail.com>
> I guess it could also be scaled to ymm if you're a big Skylake fan :P
> (in which case you'd probably want to reorder the shuffle indices so
> that chroma comes first, i.e. movq [u] + movhps [v] + vinserti32x4[y])
What shuffle or permute did you have in mind when you suggested this for
Skylake? Without the permute I'm not sure how the change in ordering
helps. Aren't we stuck with data in separate lanes? I'm probably
missing something though.
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prev parent reply other threads:[~2022-10-26 13:53 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-10-21 3:41 Kieran Kunhya
2022-10-21 13:57 ` Henrik Gramner
2022-10-26 13:51 ` James Darnley [this message]
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