Add Unsqueeze copy partitioner configs to reduce XNNPACK delegate fragmentation#19261
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…gmentation Summary: `aten.unsqueeze_copy.default` already have working `NodeVisitor` implementation in `backends/xnnpack/operators/op_squeeze.py`, but it was never wired into `ALL_PARTITIONER_CONFIGS`. As a result the partitioner could not absorb them, which forced delegate breaks every time the graph passed through one of these reshapes. This adds `GenericNodePartitionerConfig` subclass`UnsqueezeCopyConfig` which accepts `unsqueeze_copy.default` only when the inserted dim is the trailing dim (mirrors `UnsqueezeVisitor`'s constraint). Differential Revision: D103450015
🔗 Helpful Links🧪 See artifacts and rendered test results at hud.pytorch.org/pr/pytorch/executorch/19261
Note: Links to docs will display an error until the docs builds have been completed. ❗ 1 Active SEVsThere are 1 currently active SEVs. If your PR is affected, please view them below: ✅ You can merge normally! (2 Unrelated Failures)As of commit 2a1f4c3 with merge base a7e44bf ( BROKEN TRUNK - The following jobs failed but were present on the merge base:👉 Rebase onto the `viable/strict` branch to avoid these failures
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GregoryComer
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Looks good to me. Thanks for adding this.
kimishpatel
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Summary:
aten.unsqueeze_copy.defaultalready have workingNodeVisitorimplementation inbackends/xnnpack/operators/op_squeeze.py, but it was never wired intoALL_PARTITIONER_CONFIGS. As a result the partitioner could not absorb them, which forced delegate breaks every time the graph passed through one of these reshapes.This adds
GenericNodePartitionerConfigsubclassUnsqueezeCopyConfigwhich acceptsunsqueeze_copy.defaultonly when the inserted dim is the trailing dim (mirrorsUnsqueezeVisitor's constraint).Differential Revision: D103450015