Sandybridge addmul_N challenge

Torbjorn Granlund tg at
Sat Mar 10 23:48:24 CET 2012

I just realised a platform where your karatsuba addmul_2 could help a
lot: atom-64.  There, addmul_2 currently runs at 20 c/l.  The pipeline
is two-way superscalar and in-order.  The mul insn can be repeated
someting like one every 16th cycle.

There is a dual-core atom-64 in the test systems setup,
It is currently offline for various reasons.


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