From: James Darnley <jdarnley@obe.tv>
To: ffmpeg-devel@ffmpeg.org
Subject: Re: [FFmpeg-devel] libavfilter/x86/vf_convolution.asm- fix missing decelerator for AVX512ICL sobel
Date: Fri, 24 Feb 2023 14:51:08 +0100
Message-ID: <e6c8cf75-fa6a-7ba5-4bdd-26a7c5b5e951@obe.tv> (raw)
Message-ID: <20230224135108.ysPuyG05S5jVt78R1iVL7u-RTHp2siXtgeghE6Rh7k8@z> (raw)
In-Reply-To: <MN0PR12MB6053315D52BDB52D9372A989D3A89@MN0PR12MB6053.namprd12.prod.outlook.com>
On 2/24/23 04:00, Felix LeClair wrote:
> Fixes: Compilation of Sobel with AVX512ICL
> Caused: Comment left without deleniator in AVX512ICL version of SOBEL
>
> Testing:Confirmed working on AVX512 Alderlake (AKA SPR without AMX)
> diff --git a/libavfilter/x86/vf_convolution.asm b/libavfilter/x86/vf_convolution.asm
> index 9ac9ef5d73..8b85897819 100644
> --- a/libavfilter/x86/vf_convolution.asm
> +++ b/libavfilter/x86/vf_convolution.asm
> @@ -232,8 +232,8 @@ cglobal filter_sobel, 4, 15, 7, dst, width, rdiv, bias, matrix, ptr, c0, c1, c2,
> psubd m4, m5
> vpermb m3, m6, m3
> mova m5, m4
> - vpdpbusd m4, m2, [sobel_mulA] {1to16}
> - vpdpbusd m5, m3, [sobel_mulB] {1to16}
> + vpdpbusd m4, m2, [sobel_mulA]; {1to16}
> + vpdpbusd m5, m3, [sobel_mulB]; {1to16}
>
> cvtdq2ps m4, m4
> mulps m4, m4
Fix compilation with what?
I'm not familiar with the sobel algorith/function so I can't say whether
the code is correct. However those constants are only dword sized and
that is how you do a memory broadcast with avx512(icl). Furthermore
testing your change on an icl system results in a failure in checkasm.
So what program and what version fails to assemble that?
[re-sending to list]
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next prev parent reply other threads:[~2023-02-24 13:53 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-02-24 3:00 Felix LeClair
2023-02-24 13:09 ` Kieran Kunhya
2023-02-24 13:51 ` James Darnley [this message]
2023-02-24 13:51 ` James Darnley
2023-02-24 15:12 ` Felix LeClair
2023-02-24 15:45 ` Felix LeClair
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