Add test for outer class instance reference from inner class

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

@@ -0,0 +1,7 @@
+class Outer {
+    fun outer() {}
+
+    inner class Inner {
+        fun inner() = outer()
+    }
+}

compiler/testData/ir/irText/expressions/outerClassInstanceReference.txt

@@ -0,0 +1,29 @@
+FILE /outerClassInstanceReference.kt
+  CLASS CLASS Outer
+    $new: VALUE_PARAMETER this@Outer: Outer
+    CONSTRUCTOR public constructor Outer()
+      BLOCK_BODY
+        DELEGATING_CONSTRUCTOR_CALL 'constructor Any()'
+        INSTANCE_INITIALIZER_CALL classDescriptor='Outer'
+    FUN public final fun outer(): kotlin.Unit
+      $this: VALUE_PARAMETER this@Outer: Outer
+      BLOCK_BODY
+    CLASS CLASS Inner
+      $new: VALUE_PARAMETER this@Inner: Inner
+      CONSTRUCTOR public constructor Inner()
+        $outer: VALUE_PARAMETER this@Outer: Outer
+        BLOCK_BODY
+          DELEGATING_CONSTRUCTOR_CALL 'constructor Any()'
+          INSTANCE_INITIALIZER_CALL classDescriptor='Inner'
+      FUN public final fun inner(): kotlin.Unit
+        $this: VALUE_PARAMETER this@Inner: Inner
+        BLOCK_BODY
+          RETURN type=kotlin.Nothing from='inner(): Unit'
+            CALL 'outer(): Unit' type=kotlin.Unit origin=null
+              $this: GET_VAR 'this@Outer: Outer' type=Outer origin=null
+      FUN FAKE_OVERRIDE public open override fun equals(other: kotlin.Any?): kotlin.Boolean
+      FUN FAKE_OVERRIDE public open override fun hashCode(): kotlin.Int
+      FUN FAKE_OVERRIDE public open override fun toString(): kotlin.String
+    FUN FAKE_OVERRIDE public open override fun equals(other: kotlin.Any?): kotlin.Boolean
+    FUN FAKE_OVERRIDE public open override fun hashCode(): kotlin.Int
+    FUN FAKE_OVERRIDE public open override fun toString(): kotlin.String

compiler/tests/org/jetbrains/kotlin/ir/IrTextTestCaseGenerated.java

@@ -737,6 +737,12 @@ public class IrTextTestCaseGenerated extends AbstractIrTextTestCase {
             doTest(fileName);
         }
 
+        @TestMetadata("outerClassInstanceReference.kt")
+        public void testOuterClassInstanceReference() throws Exception {
+            String fileName = KotlinTestUtils.navigationMetadata("compiler/testData/ir/irText/expressions/outerClassInstanceReference.kt");
+            doTest(fileName);
+        }
+
         @TestMetadata("primitiveComparisons.kt")
         public void testPrimitiveComparisons() throws Exception {
             String fileName = KotlinTestUtils.navigationMetadata("compiler/testData/ir/irText/expressions/primitiveComparisons.kt");