Likely GMP bug

Torbjörn Granlund tg at
Fri Jun 15 08:56:05 UTC 2018

nisse at (Niels Möller) writes:

  10% speedup.

A great speedup for an important functions.

(It will be a slowdown for one obsolete platform, 64-bit Pentium 4.
There, a 64-bit right shift has a latency 7 or 8 cycles depending on
where the count is located.  I will not lose sleep over this, in
particular as it will typically use asm.)

Please encrypt, key id 0xC8601622

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