Simplest MD / Porting GCC on a new arch

[Florent DEFAY <spira.inhabitant@xxxxxxxxx>]

Hi,

I am building a new machine description for GCC.
I know there is no general dummy md. Then I am looking for the
simplest machine description that exists for GCC. I mean the easiest
to understand.
According to you, which one is it ?

Thank you.

Florent