dev-libs/
libcpuid

A small C library for x86 (and x86_64) CPU detection and feature extraction

http://libcpuid.sourceforge.net/

There are no pull requests

You think something is missing here?
Start with filling a new pull requests.

If you also like to help the Gentoo project, you can consider sending a Pull Request via GitHub.
Before doing so, you might want to take a look at the wiki page.