[K/N] Supported outer this references from cached inline bodies

kotlin-native/backend.native/tests/build.gradle

@@ -1416,6 +1416,24 @@ linkTest("innerClass_linkTest") {
     lib = "codegen/innerClass/linkTest_lib.kt"
 }
 
+linkTest("innerClass_inheritance_linkTest") {
+    useGoldenData = true
+    source = "codegen/innerClass/inheritance_linkTest_main.kt"
+    lib = "codegen/innerClass/inheritance_linkTest_lib.kt"
+}
+
+linkTest("innerClass_inheritance2_linkTest") {
+    useGoldenData = true
+    source = "codegen/innerClass/inheritance2_linkTest_main.kt"
+    lib = "codegen/innerClass/inheritance2_linkTest_lib.kt"
+}
+
+linkTest("innerClass_inheritance3_linkTest") {
+    useGoldenData = true
+    source = "codegen/innerClass/inheritance3_linkTest_main.kt"
+    lib = "codegen/innerClass/inheritance3_linkTest_lib.kt"
+}
+
 task localClass_localHierarchy(type: KonanLocalTest) {
     useGoldenData = true
     source = "codegen/localClass/localHierarchy.kt"

kotlin-native/backend.native/tests/codegen/innerClass/inheritance2_linkTest_lib.kt

@@ -0,0 +1,13 @@
+/*
+ * Copyright 2010-2021 JetBrains s.r.o. Use of this source code is governed by the Apache 2.0 license
+ * that can be found in the LICENSE file.
+ */
+
+open class Outer(val x: Int) {
+    open inner class Inner1
+    inner class Middle(x: Int) : Outer(x) {
+        inner class Inner2 : Inner1() {
+            fun foo() = this@Outer.x + this@Middle.x
+        }
+    }
+}

kotlin-native/backend.native/tests/codegen/innerClass/inheritance2_linkTest_main.kt

@@ -0,0 +1,9 @@
+/*
+ * Copyright 2010-2021 JetBrains s.r.o. Use of this source code is governed by the Apache 2.0 license
+ * that can be found in the LICENSE file.
+ */
+
+fun main() {
+    val o = Outer(42).Middle(117).Inner2()
+    println(o.foo())
+}

kotlin-native/backend.native/tests/codegen/innerClass/inheritance2_linkTest_main.out

@@ -0,0 +1 @@
+159

kotlin-native/backend.native/tests/codegen/innerClass/inheritance3_linkTest_lib.kt

@@ -0,0 +1,14 @@
+/*
+ * Copyright 2010-2021 JetBrains s.r.o. Use of this source code is governed by the Apache 2.0 license
+ * that can be found in the LICENSE file.
+ */
+
+open class Outer {
+    open inner class Inner1
+    inner class Middle {
+        inner class Inner2 : Inner1() {
+            fun getOuter() = this@Outer
+            fun getMiddle() = this@Middle
+        }
+    }
+}

kotlin-native/backend.native/tests/codegen/innerClass/inheritance3_linkTest_main.kt

@@ -0,0 +1,10 @@
+/*
+ * Copyright 2010-2021 JetBrains s.r.o. Use of this source code is governed by the Apache 2.0 license
+ * that can be found in the LICENSE file.
+ */
+
+fun main() {
+    val o = Outer().Middle().Inner2()
+    println(o.getOuter() != Outer())
+    println(o.getMiddle() != Outer().Middle())
+}

kotlin-native/backend.native/tests/codegen/innerClass/inheritance3_linkTest_main.out

@@ -0,0 +1,2 @@
+true
+true

kotlin-native/backend.native/tests/codegen/innerClass/inheritance_linkTest_lib.kt

@@ -0,0 +1,10 @@
+/*
+ * Copyright 2010-2021 JetBrains s.r.o. Use of this source code is governed by the Apache 2.0 license
+ * that can be found in the LICENSE file.
+ */
+
+open class Foo(val z: Int) {
+    open inner class FooInner {
+        fun foo() = z
+    }
+}

kotlin-native/backend.native/tests/codegen/innerClass/inheritance_linkTest_main.kt

@@ -0,0 +1,14 @@
+/*
+ * Copyright 2010-2021 JetBrains s.r.o. Use of this source code is governed by the Apache 2.0 license
+ * that can be found in the LICENSE file.
+ */
+
+class Bar : Foo(42) {
+    inner class BarInner(val x: Int) : FooInner()
+}
+
+fun main() {
+    val o = Bar().BarInner(117)
+    println(o.x)
+    println(o.foo())
+}

kotlin-native/backend.native/tests/codegen/innerClass/inheritance_linkTest_main.out

@@ -0,0 +1,2 @@
+117
+42