[XNNPACK][Partitioner] enable src based partitioner #4795
Merged
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Stack from ghstack (oldest at bottom):
In order to maintain parity with the current to_edge and to_backend lowering flow, we need to support source based partitioning.
We apply source-based partitioning to the AddMMConfig to partition all the nodes surrounding addmm so that it can be recomposed internally. While this is fine for to_edge and to_backend flow. For more robust flow, we will not have to use this when running to_edge_transform_and_lower.
Differential Revision: D61250576
Pull Request resolved: #4762