PBQP bugfix

[Lang Hames]

Hi Jonas,

Thanks very much for tracking this down!

I think the best approach to fixing this is to have the PBQP register
allocator recognize these nodes early and never represent them in the
graph. Any matrix that has only one column must be connected to a node that
has only one solution, and this should be allocated up-front to simplify
the solver's job.

I'll have a fix for this later today.

Cheers,
Lang.

On Thu, Jan 29, 2015 at 9:25 AM, Jonas Paulsson <jonas.paulsson at ericsson.com
> wrote:

>  Hi,
>
>
>
> This is a bugfix for the PBQP register allocator. The case for a
> one-column matrix must be handled in the MatrixMetadata constructor.
>
>
>
> See commit message for further explanation,
>
>
>
> Jonas Paulsson
>
>
>
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