Add a test

Author: aschwaighofer

test/attr/attr_prespecialize_experimental.swift

@@ -0,0 +1,4 @@
+// RUN: %target-typecheck-verify-swift
+
+@_specialize(exported: true, where T == Int) // expected-error{{'exported: true' has no effect in '_specialize' attribute}}
+public func myGenericFunc<T>(_ t: T) {}