JVM_IR KT-48433 don't generate null check on 'this$0' parameter

compiler/fir/fir2ir/tests-gen/org/jetbrains/kotlin/test/runners/codegen/FirBytecodeTextTestGenerated.java

@@ -1594,6 +1594,12 @@ public class FirBytecodeTextTestGenerated extends AbstractFirBytecodeTextTest {
             runTest("compiler/testData/codegen/bytecodeText/constructors/inlinePrimaryDefaults.kt");
         }
 
+        @Test
+        @TestMetadata("innerClassConstructor.kt")
+        public void testInnerClassConstructor() throws Exception {
+            runTest("compiler/testData/codegen/bytecodeText/constructors/innerClassConstructor.kt");
+        }
+
         @Test
         @TestMetadata("innerPrimaryDefaults.kt")
         public void testInnerPrimaryDefaults() throws Exception {

compiler/ir/backend.jvm/src/org/jetbrains/kotlin/backend/jvm/codegen/ExpressionCodegen.kt

@@ -328,6 +328,7 @@ class ExpressionCodegen(
                 irFunction.origin == IrDeclarationOrigin.LOCAL_FUNCTION_FOR_LAMBDA
 
     private fun generateNonNullAssertion(param: IrValueParameter) {
+        if (param.origin == JvmLoweredDeclarationOrigin.FIELD_FOR_OUTER_THIS) return
         val asmType = param.type.asmType
         if (!param.type.unboxInlineClass().isNullable() && !isPrimitive(asmType)) {
             mv.load(findLocalIndex(param.symbol), asmType)

compiler/testData/codegen/bytecodeText/constructors/innerClassConstructor.kt

@@ -0,0 +1,8 @@
+class Outer {
+    inner class Inner1
+    inner class Inner2(v: String)
+}
+
+// 1 checkNotNullParameter
+// 0 checkParameterIsNotNull
+// 1 INVOKESTATIC

compiler/tests-common-new/tests-gen/org/jetbrains/kotlin/test/runners/codegen/BytecodeTextTestGenerated.java

@@ -1570,6 +1570,12 @@ public class BytecodeTextTestGenerated extends AbstractBytecodeTextTest {
             runTest("compiler/testData/codegen/bytecodeText/constructors/inlinePrimaryDefaults.kt");
         }
 
+        @Test
+        @TestMetadata("innerClassConstructor.kt")
+        public void testInnerClassConstructor() throws Exception {
+            runTest("compiler/testData/codegen/bytecodeText/constructors/innerClassConstructor.kt");
+        }
+
         @Test
         @TestMetadata("innerPrimaryDefaults.kt")
         public void testInnerPrimaryDefaults() throws Exception {

compiler/tests-common-new/tests-gen/org/jetbrains/kotlin/test/runners/codegen/IrBytecodeTextTestGenerated.java

@@ -1594,6 +1594,12 @@ public class IrBytecodeTextTestGenerated extends AbstractIrBytecodeTextTest {
             runTest("compiler/testData/codegen/bytecodeText/constructors/inlinePrimaryDefaults.kt");
         }
 
+        @Test
+        @TestMetadata("innerClassConstructor.kt")
+        public void testInnerClassConstructor() throws Exception {
+            runTest("compiler/testData/codegen/bytecodeText/constructors/innerClassConstructor.kt");
+        }
+
         @Test
         @TestMetadata("innerPrimaryDefaults.kt")
         public void testInnerPrimaryDefaults() throws Exception {