test/IRGen/enum_function_payload.swift

// RUN: %target-swift-frontend -assume-parsing-unqualified-ownership-sil -emit-ir %s

enum Singleton {
  case F((Singleton) -> ())
}

enum Single {
  case F((Single) -> ())
  case X
  case Y
}

enum Multi {
  case F((Multi) -> ())
  case G((Multi) -> ())
}