Fixed bug in InlineCopyIr with IrGetClass + test

backend.native/compiler/ir/backend.native/src/org/jetbrains/kotlin/backend/konan/lower/DeepCopyIrTreeWithDescriptors.kt

@@ -597,7 +597,6 @@ internal class DeepCopyIrTreeWithDescriptors(val targetDescriptor: FunctionDescr
 
         override fun visitGetClass(expression: IrGetClass): IrGetClass {
             val type = substituteType(expression.type)!!
-            if (type == expression.type) return expression
             return IrGetClassImpl(
                 startOffset = expression.startOffset,
                 endOffset   = expression.endOffset,

backend.native/tests/build.gradle

@@ -2261,6 +2261,11 @@ task inline_lambdaAsAny(type: RunKonanTest) {
     source = "codegen/inline/lambdaAsAny.kt"
 }
 
+task inline_getClass(type: RunKonanTest) {
+    goldValue = "OK\n"
+    source = "codegen/inline/getClass.kt"
+}
+
 task deserialized_inline0(type: RunKonanTest) {
     source = "serialization/deserialized_inline0.kt"
 }

backend.native/tests/codegen/inline/getClass.kt

@@ -0,0 +1,18 @@
+package codegen.inline.getClass
+
+import kotlin.test.*
+
+fun foo() {
+    val cls1: Any? = Int
+    val cls2: Any? = null
+
+    cls1?.let {
+        cls2?.let {
+            var itClass = it::class
+        }
+    }
+}
+
+@Test fun runTest() {
+    println("OK")
+}