dfor$prefetch

dfor$prefetch

I thought dfor$prefetch as described in the 6.5 release notes might help performance of some code but I couldn't find any documentation on it. The compiler didn't like call dfor$prefetch(h(8*k+pflen)) where h is a 1-D complex(4) array so I tried call dfor$prefetch(%loc(h(8*k+pflen))) but got an internal compiler error. Does anybody know how to use this extension?

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