[K/N][IR] Generate missing return statement, p. 2

^KT-42832

kotlin-native/backend.native/tests/codegen/function/nothingNReturningSafeCall.kt

@@ -0,0 +1,46 @@
+/*
+ * Copyright 2010-2021 JetBrains s.r.o. and Kotlin Programming Language contributors.
+ * Use of this source code is governed by the Apache 2.0 license that can be found in the license/LICENSE.txt file.
+ */
+
+package codegen.function.nothingN_returning_safe_call
+
+import kotlin.test.*
+
+fun Any.nothing(): Nothing {
+    while (true) {}
+}
+
+class Anything
+
+fun testFunction1(obj: Any?): Nothing? = obj?.nothing()
+fun testFunction2(obj: Any?): Any? = obj?.nothing()
+fun testFunction3(obj: Any?): String? = obj?.nothing()
+fun testFunction4(obj: Any?): Unit? = obj?.nothing()
+fun testFunction5(obj: Any?): Anything? = obj?.nothing()
+
+fun testLambda1() {
+    val block: (Any?) -> Nothing? = {
+        it?.nothing()
+    }
+    block(null)
+}
+
+fun testLambda2() {
+    val block: (Any?) -> Nothing? = {
+        println() // more than one statement inside of the body
+        it?.nothing()
+    }
+    block(null)
+}
+
+fun main() {
+    testFunction1(null)
+    testFunction2(null)
+    testFunction3(null)
+    testFunction4(null)
+    testFunction5(null)
+
+    testLambda1()
+    testLambda2()
+}

kotlin-native/backend.native/tests/codegen/function/nothingNReturningSafeCall1.kt

@@ -1,18 +0,0 @@
-/*
- * Copyright 2010-2021 JetBrains s.r.o. and Kotlin Programming Language contributors.
- * Use of this source code is governed by the Apache 2.0 license that can be found in the license/LICENSE.txt file.
- */
-
-package codegen.function.nothingN_returning_safe_call1
-
-import kotlin.test.*
-
-fun Any.nothing(): Nothing {
-    while (true) {}
-}
-
-fun foo(obj: Any?): Nothing? = obj?.nothing()
-
-fun main() {
-    foo(null)
-}

kotlin-native/backend.native/tests/codegen/function/nothingNReturningSafeCall2.kt

@@ -1,23 +0,0 @@
-/*
- * Copyright 2010-2021 JetBrains s.r.o. and Kotlin Programming Language contributors.
- * Use of this source code is governed by the Apache 2.0 license that can be found in the license/LICENSE.txt file.
- */
-
-package codegen.function.nothingN_returning_safe_call2
-
-import kotlin.test.*
-
-fun Any.nothing(): Nothing {
-    while (true) {}
-}
-
-fun foo() {
-    val block: (Any?) -> Nothing? = {
-        it?.nothing()
-    }
-    block(null)
-}
-
-fun main() {
-    foo()
-}