Amount of CPU usage for GMP

[Anton Ertl]

I have written a paper that proposes an architectural feature (carry
and overflow bits in general-purpose registers) that GMP (in
particular functions like mpn_add_n() and mpn_mul_n()) would benefit
from.  The reviewers complained (among other things) that I have not
shown the relevance of this feature (pointing out that it is relevant
enough that Intel added the ADX extension apparently did not convince
them).

Do you know any sources one can point to that provide some data on how
much time CPUs spend on multi-precision arithmetics?

Thanks in advance,

- anton