[FFmpeg-devel] [PATCH] ac3enc: Add x86-optimized function to speed up log2_tab().
Justin Ruggles
justin.ruggles
Sun Feb 13 21:27:42 CET 2011
On 02/13/2011 03:23 PM, Ronald S. Bultje wrote:
> Hi,
>
> On Sun, Feb 13, 2011 at 2:49 PM, Justin Ruggles
> <justin.ruggles at gmail.com> wrote:
>> AC3DSPContext.ac3_max_msb_abs_int16() finds the maximum MSB of the absolute
>> value of each element in an array of int16_t.
> [..]
>> Athlon64 X2 6000+:
>> C: 20718
>> MMX: 3590
>> MMX2: 2906
>> SSE2: 2062
>>
>> Atom 330:
>> C: 31838
>> MMX: 7394
>> SSE2: 3138
>> SSSE3: 2759
oops. for completeness, here is a missing benchmark:
Atom 330:
MMX2: 5309
-Justin
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