Generate meaningful bytecode names for extension receivers in INDY lambdas

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

@@ -4267,6 +4267,12 @@ public class FirBytecodeTextTestGenerated extends AbstractFirBytecodeTextTest {
             KtTestUtil.assertAllTestsPresentByMetadataWithExcluded(this.getClass(), new File("compiler/testData/codegen/bytecodeText/invokedynamic"), Pattern.compile("^(.+)\\.kt$"), null, TargetBackend.JVM_IR, true);
         }
 
+        @Test
+        @TestMetadata("extensionReceiversNames.kt")
+        public void testExtensionReceiversNames() throws Exception {
+            runTest("compiler/testData/codegen/bytecodeText/invokedynamic/extensionReceiversNames.kt");
+        }
+
         @Test
         @TestMetadata("functionRefToJavaInterface.kt")
         public void testFunctionRefToJavaInterface() throws Exception {

compiler/ir/backend.jvm/lower/src/org/jetbrains/kotlin/backend/jvm/lower/indy/LambdaMetafactoryArguments.kt

@@ -446,7 +446,7 @@ internal class LambdaMetafactoryArgumentsBuilder(
         var newParameterIndex = 0
 
         newValueParameters.add(
-            oldExtensionReceiver.copy(lambda, newParameterIndex++, Name.identifier("\$receiver")).also {
+            oldExtensionReceiver.copy(lambda, newParameterIndex++, oldExtensionReceiver.name).also {
                 oldToNew[oldExtensionReceiver] = it
             }
         )

compiler/testData/codegen/bytecodeText/invokedynamic/extensionReceiversNames.kt

@@ -0,0 +1,28 @@
+// LANGUAGE: +LightweightLambdas
+// TARGET_BACKEND: JVM_IR
+
+fun <T> block(t: T, f: T.() -> Unit) {
+    f.invoke(t)
+}
+
+fun test() {
+    block("first") place1@ {
+        block("second") place2@ {
+            // Breakpoint here
+            this@place1
+            this@place2
+        }
+    }
+}
+
+// JVM_IR_TEMPLATES
+// 2 INVOKEDYNAMIC
+// 0 receiver
+// 5 LOCALVARIABLE
+// 1 LOCALVARIABLE \$this\$place1
+// 1 LOCALVARIABLE \$this\$place2
+// 1 LOCALVARIABLE t
+// 1 LOCALVARIABLE f
+// 1 LOCALVARIABLE \$this_place1
+// 1 LDC "\$this\$place1"
+// 1 LDC "\$this\$place2"

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

@@ -4267,6 +4267,12 @@ public class IrBytecodeTextTestGenerated extends AbstractIrBytecodeTextTest {
             KtTestUtil.assertAllTestsPresentByMetadataWithExcluded(this.getClass(), new File("compiler/testData/codegen/bytecodeText/invokedynamic"), Pattern.compile("^(.+)\\.kt$"), null, TargetBackend.JVM_IR, true);
         }
 
+        @Test
+        @TestMetadata("extensionReceiversNames.kt")
+        public void testExtensionReceiversNames() throws Exception {
+            runTest("compiler/testData/codegen/bytecodeText/invokedynamic/extensionReceiversNames.kt");
+        }
+
         @Test
         @TestMetadata("functionRefToJavaInterface.kt")
         public void testFunctionRefToJavaInterface() throws Exception {