Re: [PATCH] Re-implemented i586 asm AES (updated)

[Ben Pfaff]

Linus Torvalds <torvalds@xxxxxxxx> writes:

> On Fri, 6 Aug 2004, Andi Kleen wrote:
>> 
>> You could use .altinstructions to patch a jump in at runtime
>> based on CPU capabilities. Assuming MMX is really faster of course.
>
> I seriously doubt that the MMX code could be faster.

For what it's worth, about a year about I tested both Gladman's
MMX and non-MMX code on a Pentium 4.  The non-MMX code was
consistently significantly faster in every scenario I could come
up with.
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