Why -mtune=atom?

[Bill Nottingham]

Florian Weimer (fweimer at redhat.com) said: 
> The default CFLAGS set by RPM include “-mtune-atom”.
> 
> Why?  I doubt Atom CPUs are Fedora's primary target.  It's not even a
> documented GCC option.  There is such a wide variety of CPUs under this
> label that it's not even clear what it would mean.
> 
> If it's better than “-mtune=generic” or the GCC default, shouldn't GCC
> be fixed?

https://www.redhat.com/archives/rhl-devel-list/2009-June/msg01506.html

(Yes, it's possible things have changed - benchmarks would be welcome.)

Bill