swift

16ff49c0 - [IRGen] Give decl ref to LinkEntity::forAFP.

[IRGen] Give decl ref to LinkEntity::forAFP. Previously, a LinkEntity for an AST async function pointer was built by passing an AbstractFunctionDecl. Later, decl was used to construct a SILDeclRef. That arrangement meant that clients could not construct such a LinkEntity whose SILDeclRef::Kind could not be inferred from the dynamic type of the decl from which the SILDeclRef was constructed. In particular, clients could not construct a LinkEntity for the initializer corresponding to a ConstructorDecl. Here, the arrangment is changed so that the LinkEntity for an AST async function pointer is built by passing a SILDeclRef.