[pypy-dev] PPC backend design questions

[David Edelsohn]

On Wed, Aug 10, 2011 at 9:34 AM, Michael Hudson-Doyle <micahel at gmail.com> wrote:

> -- nothing prevents a field returning a value that is split between
> multiple bit ranges.  There is a bit of scaffolding that assumes
> contiguous bit ranges but nothing fundamental (and as I said, I think
> this is mostly for checking that fields don't overlap, and there would
> be other ways of doing that).

I would prefer to get more things working and then return to a better
way to encode the instruction than performing surgery on Field for one
instruction with four variants as a first project.

- David