swift

8d8b52ba - [AutoDiff] Fix crasher on @noDerivative produced by derived conformances. (#22109)

[AutoDiff] Fix crasher on @noDerivative produced by derived conformances. (#22109) When `@noDerivative` is added implicitly by derived conformances, do not emit a diagnostic for it. If the generated `@noDerivative` doesn't pass type checking, derived conformances shouldn't have created the attribute in the first place.