Support `ReinterpretArray`

[eschnett]

I see that StridedArray requires a DenseArray as target. Base.ReinterpretArray is dense (possibly depending on how it was constructed), but it is not declared as subtype of DenseArray. It would be convenient if StridedArray supported this as well.

[Jutho]

As far as I can tell, ReinterpretArray is simply yet another wrapper, whose parent can be any of the other kind of arrays, so Array, but also some not dense (or even not strided) SubArray, … 

The best way to support ReinterpretArray for StridedViews.jl, would be to reimplement the behaviour so that the reinterpretation can also be captured in the StridedView type (similar to how it can capture the conj flag). As I have not needed this much myself, I have not really studied how difficult that would be.

[kshyatt]

I'm hitting this one now for Mooncake support for TensorOperations, if anyone is interested in revisiting it...

[Jutho]

So there is now some support for ReinterpretArray, provided that the two scalar types involved have exactly same bit size. This is more restricted than the functionality provided by ReinterpretArray , so I will leave this issue open as a reminder for future generalizations.