Remove redundant upcast in JvmPropertiesLowering

#KT-48621 Fixed

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

@@ -29,6 +29,7 @@ import org.jetbrains.kotlin.ir.expressions.IrFieldAccessExpression
 import org.jetbrains.kotlin.ir.expressions.impl.IrBlockBodyImpl
 import org.jetbrains.kotlin.ir.types.IrType
 import org.jetbrains.kotlin.ir.types.classifierOrNull
+import org.jetbrains.kotlin.ir.types.isSubtypeOfClass
 import org.jetbrains.kotlin.ir.types.makeNotNull
 import org.jetbrains.kotlin.ir.util.*
 import org.jetbrains.kotlin.ir.visitors.transformChildrenVoid
@@ -118,7 +119,8 @@ class JvmPropertiesLowering(private val backendContext: JvmBackendContext) : IrE
         val receiver = expression.dispatchReceiver
         if (receiver != null) {
             val propertyParent = irProperty.parent
-            if (propertyParent is IrClass && propertyParent.symbol != receiver.type.classifierOrNull &&
+            if (propertyParent is IrClass &&
+                receiver.type.classifierOrNull?.isSubtypeOfClass(propertyParent.symbol) != true &&
                 expression.superQualifierSymbol == null
             ) {
                 return irImplicitCast(receiver, propertyParent.defaultType)

compiler/testData/codegen/box/regressions/kt5445.kt

@@ -1,8 +1,5 @@
 // TARGET_BACKEND: JVM
 
-// IGNORE_BACKEND_FIR: JVM_IR
-//  - FIR2IR should generate call to fake override
-
 // WITH_RUNTIME
 // FILE: 1.kt
 

compiler/testData/codegen/box/regressions/kt5445_2.kt

@@ -1,8 +1,5 @@
 // TARGET_BACKEND: JVM
 
-// IGNORE_BACKEND_FIR: JVM_IR
-//  - FIR2IR should generate call to fake override
-
 // WITH_RUNTIME
 // FILE: 1.kt
 

compiler/testData/codegen/box/syntheticAccessors/jvmField.kt

@@ -1,9 +1,6 @@
 // TARGET_BACKEND: JVM
 // WITH_RUNTIME
 
-// IGNORE_BACKEND_FIR: JVM_IR
-//  - FIR2IR should generate call to fake override
-
 // FILE: A.kt
 package a
 import b.*

compiler/testData/codegen/box/syntheticAccessors/protectedMemberReferenceAccessor/kt46597_crossinline_jvmField_property.kt

@@ -1,9 +1,6 @@
 // TARGET_BACKEND: JVM
 // WITH_RUNTIME
 
-// IGNORE_BACKEND_FIR: JVM_IR
-//  - FIR2IR should generate call to fake override
-
 // FILE: a.kt
 package a
 

compiler/testData/codegen/box/syntheticAccessors/protectedMemberReferenceAccessor/kt46597_jvmField_property.kt

@@ -1,9 +1,6 @@
 // TARGET_BACKEND: JVM
 // WITH_RUNTIME
 
-// IGNORE_BACKEND_FIR: JVM_IR
-//  - FIR2IR should generate call to fake override
-
 // FILE: a.kt
 package a