PSI2IR KT-47939 callable references to fun interface constructors

compiler/testData/ir/irText/expressions/funInterfaceConstructorReference.kt

@@ -0,0 +1,36 @@
+// !LANGUAGE: +AllowKotlinFunInterfaceConstructorReference
+// WITH_REFLECT
+import kotlin.reflect.*
+
+fun interface KRunnable {
+    fun run()
+}
+
+typealias KR = KRunnable
+
+fun interface KSupplier<T> {
+    fun get(): T
+}
+
+typealias KSS = KSupplier<String>
+
+fun interface KConsumer<T> {
+    fun accept(x: T)
+}
+
+typealias KCS = KConsumer<String>
+
+fun test1() = ::KRunnable
+
+fun test1a() = ::KR
+
+fun test1b(): KFunction<Runnable> = ::Runnable
+
+fun test2(): (() -> String) -> KSupplier<String> = ::KSupplier
+
+fun test2a(): (() -> String) -> KSupplier<String> = ::KSS
+
+fun test3(): ((String) -> Unit) -> KConsumer<String> = ::KConsumer
+
+fun test3a(): ((String) -> Unit) -> KConsumer<String> = ::KCS
+