[FFmpeg-devel] [PATCH] x86/hevc_mc: optimize AVX2 mc functions

James Almer jamrial at gmail.com
Thu Feb 12 17:23:41 CET 2015


On 12/02/15 7:47 AM, Christophe Gisquet wrote:
> Hi,
> 
> 2015-02-12 7:29 GMT+01:00 James Almer <jamrial at gmail.com>:
>> Before
>> 40766 decicycles in ff_hevc_put_hevc_qpel_h64_8_avx2, 8192 runs, 0 skips
>>
>> After
>> 37975 decicycles in ff_hevc_put_hevc_qpel_h64_8_avx2, 8192 runs, 0 skips
> 
> Looks straightforward. But now I understand why we declare using 11
> xmm regs in some places, which impacts a patch that has been reviewed
> and needs updating.

Pushed, thanks.


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