Array addition and array sum Panama benchmarks

[Roland Westrelin]

> Personally, I prefer to see vectorizer handling "MoveX2Y (LoadX mem)" 
> => "VectorReinterpret (LoadVector mem)" well and then introduce rules to 
> strength-reduce it to mismatched access.

Do I understand you right that you're saying the vector node for MoveL2D
(for instance) is VectorReinterpret so we could vectorize the code.

Are you then suggesting that we can transform:

(VectorReinterpret (LoadVector mem)

into:

(LoadVector mem)

with that LoadVector a mismatched access?

Roland.