Destructure assignment optimization

[determin1st]

For example, this expression:

{item1, item2} = o = new CustomObject!

compiles to this code:

ref$ = o = new CustomObject(), item1 = ref$.item1, item2 = ref$.item2;

but could be:

o = new CustomObject(), item1 = o.item1, item2 = o.item2;

as the new object is already assigned to o, additional reference variable is not needed. do you agree?

[rhendric]

Yes, I think I do agree. We'll have to be careful, though, about cases like

{a: o, b} = o = f!

which still require the ref$ variable.

[determin1st]

I'll be careful, i promise :]