526da2366a
generalize search graph to enable fuzzing I do not believe it to be feasible to correctly implement the search graph without fuzzing. This PR enables this by requiring a fuzzer to only implement three new traits: - `Cx`: implemented by all `I: Interner` - `ProofTreeBuilder`: implemented by `struct ProofTreeBuilder<D>` for all `D: SolverDelegate` - `Delegate`: implemented for a new `struct SearchGraphDelegate<D>` for all `D: SolverDelegate` It also moves the evaluation cache implementation into `rustc_type_ir`, requiring `Interner` to provide methods to create and access arbitrary `WithDepNode<T>` and to provide mutable access to a given `GlobalCache`. It otherwise does not change the API surface for users of the shared library. This change should not impact behavior in any way. r? ``@compiler-errors`` |
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