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f33e652
(Get the code!)
Status now is that I found some more optimizations today, giving significant memory savings for the Jacobi representation after expand_indices.
I accidentally pushed to trunk instead of my buildbot, so I hope the dolfin tests pass :)
It would be nice if someone with applications with complex forms can check the performance of the latest ufl. I don't think there are any assembly time changes, just preprocess/compile time.
In the long run, the most scalable solution would be to avoid using expand_indices, which will require some more index handling logic in the form compilers. I'm not going down that road at the moment, so for now lets hope at least these improvements open up some more doors.