lib/Dialect/Torch/IR/TorchOps.cpp: Canonicalize rank changing broadcast_to into reshape + broadcast_to #40
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The aten.broadcast_to op both does broadcasting but can also increase the rank by adding dimensions with size 1.
The torch->tosa lowering only handles broadcast_to that are not increasing the rank. To also help other backends, I added a canonicalizer for broadcast_to that splits into into a reshape and a non-rank changing broadcast_to.