Author: Dann Corbit
Date: 12:39:41 06/04/02
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On June 04, 2002 at 15:34:38, Sean Mintz wrote: [snip] >I think it'd be interesting to see if any speedup can be achieved by using these >data types. Can anyone run some tests to find out? It would seem to me that if >we can hold 64 bit values (using __m64) then we should see a 2x speedup in some >cases. Hope this helps some people. The 64 bit popcount is about 3% faster than the 32 bit version. On the 32 bit chips, the 64 bit instructions are pretty lack-luster.
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