Possible quick win in GC?

[Abdulhaq via Digitalmars-d]

On Monday, 29 September 2014 at 11:02:12 UTC, thedeemon wrote:
> On Sunday, 28 September 2014 at 16:29:45 UTC, Abdulhaq wrote...
>
> Congratulations on inventing
> http://en.wikipedia.org/wiki/Region-based_memory_management
> and "Region inference" in particular.

Ah yes - it's identical isn't it - I don't know whether to be 
happy or sad about that :). They explain it much better too...

So, (does anyone know) has this technique been discarded for D or 
is it 'just' a matter of the resources to do it?