New AMD Packed Integer Rotates and Shifts instructions

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Danilo

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May 27, 2009, 3:33:28 AM5/27/09
to crypto-optimization
Hi,

I have just read that AMD are introducing new set of instructions for
"Packed Integer Rotates and Shifts".
That is good news for x86 family of new processors.
In my opinion many cryptographic algorithms can benefit from those
instructions (at least several SHA-3 hash candidate functions that
perform different rotates or shifts on 32-bit or 64-bit words).

Links:
http://forums.amd.com/devblog/blogpost.cfm?threadid=112934&catid=208

and

http://support.amd.com/us/Processor_TechDocs/43479.pdf

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