ni...@lysator.liu.se (Niels Möller) writes: And this on a laptop with an Intel U4100 (5 years old?), so I'd assume it doesn't have a particularly fast div instruction. Should we just delete div1 ? On which architectures can we expect it to be beneficial? It should be fairly easy to find out, if we define a HGCD_DIV1_METHOD known to tuneup, to select between plain division and the div1 function.
Interesting but not too surprising results. Intel ark doesn't seem to know any processor called "U4100" so I cannot figure out what generation it belongs to. IIRC, Intel has not improved plain 64b/64b division since Haswell, which is older than 5 years. Again, if IIRC, small quotients may result in 16 cycle latency. That's the lowest possible timing. -- Torbjörn Please encrypt, key id 0xC8601622 _______________________________________________ gmp-devel mailing list gmp-devel@gmplib.org https://gmplib.org/mailman/listinfo/gmp-devel
