Could D benefit from JIT compiling?

[Xinok]

Reading through the 'Java > Scala' thread, I've realized there are some 
benefits to dynamic code generation vs statically compiled code. Things 
like unrolling loops, devirtualizing functions, etc.

So it made me wonder, could D benefit from such technology, not from a 
feature standpoint, but strictly optimization? I'm not familiar with the 
topic, but I imagine there could be a few situations that would benefit 
in terms of performance, as long as it doesn't affect interoperability.