fa36fcd448
This PR adds an alternative implementation of `DerivingBEq` based on comparing `.ctorIdx` and using a dedicated matcher for comparing same constructors (added in #10152), to avoid the quadratic overhead of the default match implementation. The new option `deriving.beq.linear_construction_threshold` sets the constructor count threshold (10 by default) for using the new construction. Such instances also allow `deriving ReflBEq, LawfulBeq`, although these proofs for these properties are still quadratic. |
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| playground | ||
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| simpperf | ||
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| common.sh | ||
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| lean-toolchain | ||