[FFmpeg-devel] [flamefest-start] A little something on MMX/SSE intrinsics

Måns Rullgård mans
Thu Feb 28 02:42:05 CET 2008

Rich Felker <dalias at aerifal.cx> writes:

> On Wed, Feb 27, 2008 at 10:59:52PM +0000, M?ns Rullg?rd wrote:
>> > I do know that gcc does quite stupid things on x86 be it when compiling C
>> > code or intrinsics. And i know that gcc is generally better at compiling
>> > x86 code than code for other less common architecures. Combining these
>> > does strongly point toward that the gap between intrinsics and asm will
>> > be bigger on ppc than x86 not smaller.
>> > Of course you are correct that i do not strictly "know" it. Its just VERY
>> > likely.
>> It is wrong to talk about the probability of something that has a
>> definite value, even if it has not yet been measured.  Probabilities
>> would be appropriate if speculating over the abilities of future GCC
>> versions.
> Welcome to the world of QM. Unfortunately that's how all facts are..
> :)
> </badattemptathumor>
> Rich

M?ns Rullg?rd
mans at mansr.com

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