[x264-devel] commit: s/movdqa/movaps/g (Loren Merritt )

Loren Merritt lorenm at u.washington.edu
Tue Apr 22 10:45:56 CEST 2008


On Tue, 22 Apr 2008, Zuxy Meng wrote:
> 2008/4/22 git version control <git at videolan.org>:
>> --- a/common/x86/x86inc.asm
>> +++ b/common/x86/x86inc.asm
>> @@ -466,3 +466,7 @@ INIT_MMX
>>     %endif
>>  %endmacro
>>
>> +; substitutions which are functionally identical but reduce code size
>> +%define movdqa movaps
>> +%define movdqu movups
>
> I wonder if on some future CPUs the replacement will incur a
> performance penalty...

Maybe. But until then it's 5KB smaller, so a performance benefit.

--Loren Merritt


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