Decomp/generic rule lowering - #3053
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Co-authored-by: Paul <79805239+paul0403@users.noreply.github.com>
Co-authored-by: Paul <79805239+paul0403@users.noreply.github.com>
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TODO: update PennyLane version once TestPyPI uploads resume **Context:** Decomposition rule lowering requires correctly mapping parameters, which cannot be done reliably with the current `DecomposableGate` interface. **Description of the Change:** Update the `DecomposableGate` interface to return dictionaries (`llvm::StringMap`s) of data, to permit reconstruction. **Benefits:** python-decompositions are improved. **Possible Drawbacks:** **Related GitHub Issues:** [sc-125812] --------- Co-authored-by: paul0403 <paulhaochen.wang@gmail.com>
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Context:
Description of the Change:
This PR provides the core infrastructure changes for
Operator2support in Catalyst. This is centred on thepython_decompositionfunction, which lowers all of the decomposition for a givenOperator2instance. Precompiled, trace-time and on-demand decomposition rules will all be lowered through this utility, providing a unified and universal decomposition rule lowering system. We provide the generic utilities needed by each of the lowering pathways, as well as a unified testing infrastructure with mockOperator2instances.Benefits:
Possible Drawbacks:
This PR deprecates the legacy interface for decomposition.
Note also that tests using any PennyLane operators will fail until the ops are migrated to PL Operator2, since callbacks are only supported for
Operator2instances (required for graph IDs).Related GitHub Issues:
[sc-122043]
[sc-122018]