[Bug middle-end/36041] Speed up builtin_popcountll

[glisse at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=36041

--- Comment #16 from Marc Glisse <glisse at gcc dot gnu.org> ---
(In reply to Andrew Pinski from comment #13)
> I think it is a bad idea to use ifunc for such a function as most of the
> time it is link against statically in most cases.

g++ links to it dynamically by default.
Maybe we only want ifunc for libgcc_s and not libgcc, I haven't thought about
it.

> Why can't you compile your code with -march=native

That's what I do, but Cristian is probably compiling generic packages for a
distribution

> for the places where you know you are going to
> compile and run directly on the same machine?

so he is not in this situation.