diff --git a/compiler/ir/ir.tree/src/org/jetbrains/kotlin/ir/declarations/IrField.kt b/compiler/ir/ir.tree/src/org/jetbrains/kotlin/ir/declarations/IrField.kt
index 637ec7b8282..6715e61f201 100644
--- a/compiler/ir/ir.tree/src/org/jetbrains/kotlin/ir/declarations/IrField.kt
+++ b/compiler/ir/ir.tree/src/org/jetbrains/kotlin/ir/declarations/IrField.kt
@@ -21,5 +21,6 @@ interface IrField : IrSymbolDeclaration<IrFieldSymbol> {
     val name: Name
     val type: KotlinType
     val visibility: Visibility
+    val isFinal: Boolean
     var initializer: IrExpressionBody?
 }
\ No newline at end of file
diff --git a/compiler/ir/ir.tree/src/org/jetbrains/kotlin/ir/declarations/impl/IrFieldImpl.kt b/compiler/ir/ir.tree/src/org/jetbrains/kotlin/ir/declarations/impl/IrFieldImpl.kt
index 002b0b4d4f4..d6b2add7b09 100644
--- a/compiler/ir/ir.tree/src/org/jetbrains/kotlin/ir/declarations/impl/IrFieldImpl.kt
+++ b/compiler/ir/ir.tree/src/org/jetbrains/kotlin/ir/declarations/impl/IrFieldImpl.kt
@@ -16,6 +16,7 @@
 
 package org.jetbrains.kotlin.ir.declarations.impl
 
+import org.jetbrains.kotlin.descriptors.Modality
 import org.jetbrains.kotlin.descriptors.PropertyDescriptor
 import org.jetbrains.kotlin.descriptors.Visibility
 import org.jetbrains.kotlin.ir.declarations.IrDeclarationOrigin
@@ -36,12 +37,21 @@ class IrFieldImpl(
     override val symbol: IrFieldSymbol,
     override val name: Name,
     override val type: KotlinType,
-    override val visibility: Visibility
+    override val visibility: Visibility,
+    override val isFinal: Boolean
 ) : IrDeclarationBase(startOffset, endOffset, origin), IrField {
+
+    constructor(startOffset: Int, endOffset: Int, origin: IrDeclarationOrigin, symbol: IrFieldSymbol, isFinal: Boolean) :
+            this(
+                startOffset, endOffset, origin, symbol,
+                symbol.descriptor.name, symbol.descriptor.type, symbol.descriptor.visibility,
+                isFinal
+            )
+
     constructor(startOffset: Int, endOffset: Int, origin: IrDeclarationOrigin, symbol: IrFieldSymbol) :
             this(
                 startOffset, endOffset, origin, symbol,
-                symbol.descriptor.name, symbol.descriptor.type, symbol.descriptor.visibility
+                symbol.descriptor.modality == Modality.FINAL
             )
 
     constructor(startOffset: Int, endOffset: Int, origin: IrDeclarationOrigin, descriptor: PropertyDescriptor) :
diff --git a/compiler/ir/ir.tree/src/org/jetbrains/kotlin/ir/util/RenderIrElement.kt b/compiler/ir/ir.tree/src/org/jetbrains/kotlin/ir/util/RenderIrElement.kt
index eafa3a1cd23..5fde3086a91 100644
--- a/compiler/ir/ir.tree/src/org/jetbrains/kotlin/ir/util/RenderIrElement.kt
+++ b/compiler/ir/ir.tree/src/org/jetbrains/kotlin/ir/util/RenderIrElement.kt
@@ -104,7 +104,11 @@ class RenderIrElementVisitor : IrElementVisitor<String, Nothing?> {
 
     override fun visitField(declaration: IrField, data: Nothing?): String =
         "FIELD ${declaration.renderOriginIfNonTrivial()}" +
-                "name:${declaration.name} type:${declaration.type.render()} visibility:${declaration.visibility}"
+                "name:${declaration.name} type:${declaration.type.render()} visibility:${declaration.visibility} " +
+                "flags:${declaration.renderFieldFlags()}"
+
+    private fun IrField.renderFieldFlags() =
+        if (isFinal) "final" else ""
 
     override fun visitClass(declaration: IrClass, data: Nothing?): String =
         declaration.run {
diff --git a/compiler/testData/ir/irText/classes/annotationClasses.txt b/compiler/testData/ir/irText/classes/annotationClasses.txt
index 026e2d570d9..40a2af18b2c 100644
--- a/compiler/testData/ir/irText/classes/annotationClasses.txt
+++ b/compiler/testData/ir/irText/classes/annotationClasses.txt
@@ -6,7 +6,7 @@ FILE fqName:<root> fileName:/annotationClasses.kt
     CONSTRUCTOR visibility:public <> (x:kotlin.Int) returnType:Test1 flags:
       VALUE_PARAMETER name:x index:0 type:kotlin.Int flags:
     PROPERTY name:x type:kotlin.Int visibility:public modality:FINAL flags:val
-      FIELD PROPERTY_BACKING_FIELD name:x type:kotlin.Int visibility:public
+      FIELD PROPERTY_BACKING_FIELD name:x type:kotlin.Int visibility:public flags:final
         EXPRESSION_BODY
           GET_VAR 'value-parameter x: Int' type=kotlin.Int origin=INITIALIZE_PROPERTY_FROM_PARAMETER
       FUN DEFAULT_PROPERTY_ACCESSOR name:<get-x> visibility:public modality:FINAL <> ($this:Test1) returnType:Int flags:
@@ -37,7 +37,7 @@ FILE fqName:<root> fileName:/annotationClasses.kt
         EXPRESSION_BODY
           CONST Int type=kotlin.Int value=0
     PROPERTY name:x type:kotlin.Int visibility:public modality:FINAL flags:val
-      FIELD PROPERTY_BACKING_FIELD name:x type:kotlin.Int visibility:public
+      FIELD PROPERTY_BACKING_FIELD name:x type:kotlin.Int visibility:public flags:final
         EXPRESSION_BODY
           GET_VAR 'value-parameter x: Int = ...' type=kotlin.Int origin=INITIALIZE_PROPERTY_FROM_PARAMETER
       FUN DEFAULT_PROPERTY_ACCESSOR name:<get-x> visibility:public modality:FINAL <> ($this:Test2) returnType:Int flags:
@@ -66,7 +66,7 @@ FILE fqName:<root> fileName:/annotationClasses.kt
     CONSTRUCTOR visibility:public <> (x:Test1) returnType:Test3 flags:
       VALUE_PARAMETER name:x index:0 type:Test1 flags:
     PROPERTY name:x type:Test1 visibility:public modality:FINAL flags:val
-      FIELD PROPERTY_BACKING_FIELD name:x type:Test1 visibility:public
+      FIELD PROPERTY_BACKING_FIELD name:x type:Test1 visibility:public flags:final
         EXPRESSION_BODY
           GET_VAR 'value-parameter x: Test1' type=Test1 origin=INITIALIZE_PROPERTY_FROM_PARAMETER
       FUN DEFAULT_PROPERTY_ACCESSOR name:<get-x> visibility:public modality:FINAL <> ($this:Test3) returnType:Test1 flags:
@@ -95,7 +95,7 @@ FILE fqName:<root> fileName:/annotationClasses.kt
     CONSTRUCTOR visibility:public <> (xs:kotlin.IntArray) returnType:Test4 flags:
       VALUE_PARAMETER name:xs index:0 type:kotlin.IntArray varargElementType:kotlin.Int flags:vararg
     PROPERTY name:xs type:kotlin.IntArray visibility:public modality:FINAL flags:val
-      FIELD PROPERTY_BACKING_FIELD name:xs type:kotlin.IntArray visibility:public
+      FIELD PROPERTY_BACKING_FIELD name:xs type:kotlin.IntArray visibility:public flags:final
         EXPRESSION_BODY
           GET_VAR 'value-parameter vararg xs: Int' type=kotlin.IntArray origin=INITIALIZE_PROPERTY_FROM_PARAMETER
       FUN DEFAULT_PROPERTY_ACCESSOR name:<get-xs> visibility:public modality:FINAL <> ($this:Test4) returnType:IntArray flags:
diff --git a/compiler/testData/ir/irText/classes/argumentReorderingInDelegatingConstructorCall.txt b/compiler/testData/ir/irText/classes/argumentReorderingInDelegatingConstructorCall.txt
index e7ae9113605..ec55f307449 100644
--- a/compiler/testData/ir/irText/classes/argumentReorderingInDelegatingConstructorCall.txt
+++ b/compiler/testData/ir/irText/classes/argumentReorderingInDelegatingConstructorCall.txt
@@ -10,7 +10,7 @@ FILE fqName:<root> fileName:/argumentReorderingInDelegatingConstructorCall.kt
         DELEGATING_CONSTRUCTOR_CALL 'constructor Any()'
         INSTANCE_INITIALIZER_CALL classDescriptor='Base'
     PROPERTY name:x type:kotlin.Int visibility:public modality:FINAL flags:val
-      FIELD PROPERTY_BACKING_FIELD name:x type:kotlin.Int visibility:public
+      FIELD PROPERTY_BACKING_FIELD name:x type:kotlin.Int visibility:public flags:final
         EXPRESSION_BODY
           GET_VAR 'value-parameter x: Int' type=kotlin.Int origin=INITIALIZE_PROPERTY_FROM_PARAMETER
       FUN DEFAULT_PROPERTY_ACCESSOR name:<get-x> visibility:public modality:FINAL <> ($this:Base) returnType:Int flags:
@@ -20,7 +20,7 @@ FILE fqName:<root> fileName:/argumentReorderingInDelegatingConstructorCall.kt
             GET_FIELD 'x: Int' type=kotlin.Int origin=null
               receiver: GET_VAR 'this@Base: Base' type=Base origin=null
     PROPERTY name:y type:kotlin.Int visibility:public modality:FINAL flags:val
-      FIELD PROPERTY_BACKING_FIELD name:y type:kotlin.Int visibility:public
+      FIELD PROPERTY_BACKING_FIELD name:y type:kotlin.Int visibility:public flags:final
         EXPRESSION_BODY
           GET_VAR 'value-parameter y: Int' type=kotlin.Int origin=INITIALIZE_PROPERTY_FROM_PARAMETER
       FUN DEFAULT_PROPERTY_ACCESSOR name:<get-y> visibility:public modality:FINAL <> ($this:Base) returnType:Int flags:
diff --git a/compiler/testData/ir/irText/classes/classMembers.txt b/compiler/testData/ir/irText/classes/classMembers.txt
index cb3b25ab2c7..fbba97430c1 100644
--- a/compiler/testData/ir/irText/classes/classMembers.txt
+++ b/compiler/testData/ir/irText/classes/classMembers.txt
@@ -13,7 +13,7 @@ FILE fqName:<root> fileName:/classMembers.kt
         DELEGATING_CONSTRUCTOR_CALL 'constructor Any()'
         INSTANCE_INITIALIZER_CALL classDescriptor='C'
     PROPERTY name:y type:kotlin.Int visibility:public modality:FINAL flags:val
-      FIELD PROPERTY_BACKING_FIELD name:y type:kotlin.Int visibility:public
+      FIELD PROPERTY_BACKING_FIELD name:y type:kotlin.Int visibility:public flags:final
         EXPRESSION_BODY
           GET_VAR 'value-parameter y: Int' type=kotlin.Int origin=INITIALIZE_PROPERTY_FROM_PARAMETER
       FUN DEFAULT_PROPERTY_ACCESSOR name:<get-y> visibility:public modality:FINAL <> ($this:C) returnType:Int flags:
@@ -23,7 +23,7 @@ FILE fqName:<root> fileName:/classMembers.kt
             GET_FIELD 'y: Int' type=kotlin.Int origin=null
               receiver: GET_VAR 'this@C: C' type=C origin=null
     PROPERTY name:z type:kotlin.Int visibility:public modality:FINAL flags:var
-      FIELD PROPERTY_BACKING_FIELD name:z type:kotlin.Int visibility:public
+      FIELD PROPERTY_BACKING_FIELD name:z type:kotlin.Int visibility:public flags:final
         EXPRESSION_BODY
           GET_VAR 'value-parameter z: Int = ...' type=kotlin.Int origin=INITIALIZE_PROPERTY_FROM_PARAMETER
       FUN DEFAULT_PROPERTY_ACCESSOR name:<get-z> visibility:public modality:FINAL <> ($this:C) returnType:Int flags:
@@ -46,7 +46,7 @@ FILE fqName:<root> fileName:/classMembers.kt
           y: CONST Int type=kotlin.Int value=0
           z: CONST Int type=kotlin.Int value=0
     PROPERTY name:property type:kotlin.Int visibility:public modality:FINAL flags:val
-      FIELD PROPERTY_BACKING_FIELD name:property type:kotlin.Int visibility:public
+      FIELD PROPERTY_BACKING_FIELD name:property type:kotlin.Int visibility:public flags:final
         EXPRESSION_BODY
           CONST Int type=kotlin.Int value=0
       FUN DEFAULT_PROPERTY_ACCESSOR name:<get-property> visibility:public modality:FINAL <> ($this:C) returnType:Int flags:
diff --git a/compiler/testData/ir/irText/classes/dataClassWithArrayMembers.txt b/compiler/testData/ir/irText/classes/dataClassWithArrayMembers.txt
index ed25ec81104..9cf718e6e80 100644
--- a/compiler/testData/ir/irText/classes/dataClassWithArrayMembers.txt
+++ b/compiler/testData/ir/irText/classes/dataClassWithArrayMembers.txt
@@ -17,7 +17,7 @@ FILE fqName:<root> fileName:/dataClassWithArrayMembers.kt
         DELEGATING_CONSTRUCTOR_CALL 'constructor Any()'
         INSTANCE_INITIALIZER_CALL classDescriptor='Test1'
     PROPERTY name:stringArray type:kotlin.Array<kotlin.String> visibility:public modality:FINAL flags:val
-      FIELD PROPERTY_BACKING_FIELD name:stringArray type:kotlin.Array<kotlin.String> visibility:public
+      FIELD PROPERTY_BACKING_FIELD name:stringArray type:kotlin.Array<kotlin.String> visibility:public flags:final
         EXPRESSION_BODY
           GET_VAR 'value-parameter stringArray: Array<String>' type=kotlin.Array<kotlin.String> origin=INITIALIZE_PROPERTY_FROM_PARAMETER
       FUN DEFAULT_PROPERTY_ACCESSOR name:<get-stringArray> visibility:public modality:FINAL <> ($this:Test1) returnType:Array<String> flags:
@@ -27,7 +27,7 @@ FILE fqName:<root> fileName:/dataClassWithArrayMembers.kt
             GET_FIELD 'stringArray: Array<String>' type=kotlin.Array<kotlin.String> origin=null
               receiver: GET_VAR 'this@Test1: Test1' type=Test1 origin=null
     PROPERTY name:charArray type:kotlin.CharArray visibility:public modality:FINAL flags:val
-      FIELD PROPERTY_BACKING_FIELD name:charArray type:kotlin.CharArray visibility:public
+      FIELD PROPERTY_BACKING_FIELD name:charArray type:kotlin.CharArray visibility:public flags:final
         EXPRESSION_BODY
           GET_VAR 'value-parameter charArray: CharArray' type=kotlin.CharArray origin=INITIALIZE_PROPERTY_FROM_PARAMETER
       FUN DEFAULT_PROPERTY_ACCESSOR name:<get-charArray> visibility:public modality:FINAL <> ($this:Test1) returnType:CharArray flags:
@@ -37,7 +37,7 @@ FILE fqName:<root> fileName:/dataClassWithArrayMembers.kt
             GET_FIELD 'charArray: CharArray' type=kotlin.CharArray origin=null
               receiver: GET_VAR 'this@Test1: Test1' type=Test1 origin=null
     PROPERTY name:booleanArray type:kotlin.BooleanArray visibility:public modality:FINAL flags:val
-      FIELD PROPERTY_BACKING_FIELD name:booleanArray type:kotlin.BooleanArray visibility:public
+      FIELD PROPERTY_BACKING_FIELD name:booleanArray type:kotlin.BooleanArray visibility:public flags:final
         EXPRESSION_BODY
           GET_VAR 'value-parameter booleanArray: BooleanArray' type=kotlin.BooleanArray origin=INITIALIZE_PROPERTY_FROM_PARAMETER
       FUN DEFAULT_PROPERTY_ACCESSOR name:<get-booleanArray> visibility:public modality:FINAL <> ($this:Test1) returnType:BooleanArray flags:
@@ -47,7 +47,7 @@ FILE fqName:<root> fileName:/dataClassWithArrayMembers.kt
             GET_FIELD 'booleanArray: BooleanArray' type=kotlin.BooleanArray origin=null
               receiver: GET_VAR 'this@Test1: Test1' type=Test1 origin=null
     PROPERTY name:byteArray type:kotlin.ByteArray visibility:public modality:FINAL flags:val
-      FIELD PROPERTY_BACKING_FIELD name:byteArray type:kotlin.ByteArray visibility:public
+      FIELD PROPERTY_BACKING_FIELD name:byteArray type:kotlin.ByteArray visibility:public flags:final
         EXPRESSION_BODY
           GET_VAR 'value-parameter byteArray: ByteArray' type=kotlin.ByteArray origin=INITIALIZE_PROPERTY_FROM_PARAMETER
       FUN DEFAULT_PROPERTY_ACCESSOR name:<get-byteArray> visibility:public modality:FINAL <> ($this:Test1) returnType:ByteArray flags:
@@ -57,7 +57,7 @@ FILE fqName:<root> fileName:/dataClassWithArrayMembers.kt
             GET_FIELD 'byteArray: ByteArray' type=kotlin.ByteArray origin=null
               receiver: GET_VAR 'this@Test1: Test1' type=Test1 origin=null
     PROPERTY name:shortArray type:kotlin.ShortArray visibility:public modality:FINAL flags:val
-      FIELD PROPERTY_BACKING_FIELD name:shortArray type:kotlin.ShortArray visibility:public
+      FIELD PROPERTY_BACKING_FIELD name:shortArray type:kotlin.ShortArray visibility:public flags:final
         EXPRESSION_BODY
           GET_VAR 'value-parameter shortArray: ShortArray' type=kotlin.ShortArray origin=INITIALIZE_PROPERTY_FROM_PARAMETER
       FUN DEFAULT_PROPERTY_ACCESSOR name:<get-shortArray> visibility:public modality:FINAL <> ($this:Test1) returnType:ShortArray flags:
@@ -67,7 +67,7 @@ FILE fqName:<root> fileName:/dataClassWithArrayMembers.kt
             GET_FIELD 'shortArray: ShortArray' type=kotlin.ShortArray origin=null
               receiver: GET_VAR 'this@Test1: Test1' type=Test1 origin=null
     PROPERTY name:intArray type:kotlin.IntArray visibility:public modality:FINAL flags:val
-      FIELD PROPERTY_BACKING_FIELD name:intArray type:kotlin.IntArray visibility:public
+      FIELD PROPERTY_BACKING_FIELD name:intArray type:kotlin.IntArray visibility:public flags:final
         EXPRESSION_BODY
           GET_VAR 'value-parameter intArray: IntArray' type=kotlin.IntArray origin=INITIALIZE_PROPERTY_FROM_PARAMETER
       FUN DEFAULT_PROPERTY_ACCESSOR name:<get-intArray> visibility:public modality:FINAL <> ($this:Test1) returnType:IntArray flags:
@@ -77,7 +77,7 @@ FILE fqName:<root> fileName:/dataClassWithArrayMembers.kt
             GET_FIELD 'intArray: IntArray' type=kotlin.IntArray origin=null
               receiver: GET_VAR 'this@Test1: Test1' type=Test1 origin=null
     PROPERTY name:longArray type:kotlin.LongArray visibility:public modality:FINAL flags:val
-      FIELD PROPERTY_BACKING_FIELD name:longArray type:kotlin.LongArray visibility:public
+      FIELD PROPERTY_BACKING_FIELD name:longArray type:kotlin.LongArray visibility:public flags:final
         EXPRESSION_BODY
           GET_VAR 'value-parameter longArray: LongArray' type=kotlin.LongArray origin=INITIALIZE_PROPERTY_FROM_PARAMETER
       FUN DEFAULT_PROPERTY_ACCESSOR name:<get-longArray> visibility:public modality:FINAL <> ($this:Test1) returnType:LongArray flags:
@@ -87,7 +87,7 @@ FILE fqName:<root> fileName:/dataClassWithArrayMembers.kt
             GET_FIELD 'longArray: LongArray' type=kotlin.LongArray origin=null
               receiver: GET_VAR 'this@Test1: Test1' type=Test1 origin=null
     PROPERTY name:floatArray type:kotlin.FloatArray visibility:public modality:FINAL flags:val
-      FIELD PROPERTY_BACKING_FIELD name:floatArray type:kotlin.FloatArray visibility:public
+      FIELD PROPERTY_BACKING_FIELD name:floatArray type:kotlin.FloatArray visibility:public flags:final
         EXPRESSION_BODY
           GET_VAR 'value-parameter floatArray: FloatArray' type=kotlin.FloatArray origin=INITIALIZE_PROPERTY_FROM_PARAMETER
       FUN DEFAULT_PROPERTY_ACCESSOR name:<get-floatArray> visibility:public modality:FINAL <> ($this:Test1) returnType:FloatArray flags:
@@ -97,7 +97,7 @@ FILE fqName:<root> fileName:/dataClassWithArrayMembers.kt
             GET_FIELD 'floatArray: FloatArray' type=kotlin.FloatArray origin=null
               receiver: GET_VAR 'this@Test1: Test1' type=Test1 origin=null
     PROPERTY name:doubleArray type:kotlin.DoubleArray visibility:public modality:FINAL flags:val
-      FIELD PROPERTY_BACKING_FIELD name:doubleArray type:kotlin.DoubleArray visibility:public
+      FIELD PROPERTY_BACKING_FIELD name:doubleArray type:kotlin.DoubleArray visibility:public flags:final
         EXPRESSION_BODY
           GET_VAR 'value-parameter doubleArray: DoubleArray' type=kotlin.DoubleArray origin=INITIALIZE_PROPERTY_FROM_PARAMETER
       FUN DEFAULT_PROPERTY_ACCESSOR name:<get-doubleArray> visibility:public modality:FINAL <> ($this:Test1) returnType:DoubleArray flags:
@@ -469,7 +469,7 @@ FILE fqName:<root> fileName:/dataClassWithArrayMembers.kt
         DELEGATING_CONSTRUCTOR_CALL 'constructor Any()'
         INSTANCE_INITIALIZER_CALL classDescriptor='Test2'
     PROPERTY name:genericArray type:kotlin.Array<T> visibility:public modality:FINAL flags:val
-      FIELD PROPERTY_BACKING_FIELD name:genericArray type:kotlin.Array<T> visibility:public
+      FIELD PROPERTY_BACKING_FIELD name:genericArray type:kotlin.Array<T> visibility:public flags:final
         EXPRESSION_BODY
           GET_VAR 'value-parameter genericArray: Array<T>' type=kotlin.Array<T> origin=INITIALIZE_PROPERTY_FROM_PARAMETER
       FUN DEFAULT_PROPERTY_ACCESSOR name:<get-genericArray> visibility:public modality:FINAL <> ($this:Test2<T>) returnType:Array<T> flags:
@@ -567,7 +567,7 @@ FILE fqName:<root> fileName:/dataClassWithArrayMembers.kt
         DELEGATING_CONSTRUCTOR_CALL 'constructor Any()'
         INSTANCE_INITIALIZER_CALL classDescriptor='Test3'
     PROPERTY name:anyArrayN type:kotlin.Array<kotlin.Any>? visibility:public modality:FINAL flags:val
-      FIELD PROPERTY_BACKING_FIELD name:anyArrayN type:kotlin.Array<kotlin.Any>? visibility:public
+      FIELD PROPERTY_BACKING_FIELD name:anyArrayN type:kotlin.Array<kotlin.Any>? visibility:public flags:final
         EXPRESSION_BODY
           GET_VAR 'value-parameter anyArrayN: Array<Any>?' type=kotlin.Array<kotlin.Any>? origin=INITIALIZE_PROPERTY_FROM_PARAMETER
       FUN DEFAULT_PROPERTY_ACCESSOR name:<get-anyArrayN> visibility:public modality:FINAL <> ($this:Test3) returnType:Array<Any>? flags:
diff --git a/compiler/testData/ir/irText/classes/dataClasses.txt b/compiler/testData/ir/irText/classes/dataClasses.txt
index 177d936793f..c59920889af 100644
--- a/compiler/testData/ir/irText/classes/dataClasses.txt
+++ b/compiler/testData/ir/irText/classes/dataClasses.txt
@@ -11,7 +11,7 @@ FILE fqName:<root> fileName:/dataClasses.kt
         DELEGATING_CONSTRUCTOR_CALL 'constructor Any()'
         INSTANCE_INITIALIZER_CALL classDescriptor='Test1'
     PROPERTY name:x type:kotlin.Int visibility:public modality:FINAL flags:val
-      FIELD PROPERTY_BACKING_FIELD name:x type:kotlin.Int visibility:public
+      FIELD PROPERTY_BACKING_FIELD name:x type:kotlin.Int visibility:public flags:final
         EXPRESSION_BODY
           GET_VAR 'value-parameter x: Int' type=kotlin.Int origin=INITIALIZE_PROPERTY_FROM_PARAMETER
       FUN DEFAULT_PROPERTY_ACCESSOR name:<get-x> visibility:public modality:FINAL <> ($this:Test1) returnType:Int flags:
@@ -21,7 +21,7 @@ FILE fqName:<root> fileName:/dataClasses.kt
             GET_FIELD 'x: Int' type=kotlin.Int origin=null
               receiver: GET_VAR 'this@Test1: Test1' type=Test1 origin=null
     PROPERTY name:y type:kotlin.String visibility:public modality:FINAL flags:val
-      FIELD PROPERTY_BACKING_FIELD name:y type:kotlin.String visibility:public
+      FIELD PROPERTY_BACKING_FIELD name:y type:kotlin.String visibility:public flags:final
         EXPRESSION_BODY
           GET_VAR 'value-parameter y: String' type=kotlin.String origin=INITIALIZE_PROPERTY_FROM_PARAMETER
       FUN DEFAULT_PROPERTY_ACCESSOR name:<get-y> visibility:public modality:FINAL <> ($this:Test1) returnType:String flags:
@@ -31,7 +31,7 @@ FILE fqName:<root> fileName:/dataClasses.kt
             GET_FIELD 'y: String' type=kotlin.String origin=null
               receiver: GET_VAR 'this@Test1: Test1' type=Test1 origin=null
     PROPERTY name:z type:kotlin.Any visibility:public modality:FINAL flags:val
-      FIELD PROPERTY_BACKING_FIELD name:z type:kotlin.Any visibility:public
+      FIELD PROPERTY_BACKING_FIELD name:z type:kotlin.Any visibility:public flags:final
         EXPRESSION_BODY
           GET_VAR 'value-parameter z: Any' type=kotlin.Any origin=INITIALIZE_PROPERTY_FROM_PARAMETER
       FUN DEFAULT_PROPERTY_ACCESSOR name:<get-z> visibility:public modality:FINAL <> ($this:Test1) returnType:Any flags:
@@ -193,7 +193,7 @@ FILE fqName:<root> fileName:/dataClasses.kt
         DELEGATING_CONSTRUCTOR_CALL 'constructor Any()'
         INSTANCE_INITIALIZER_CALL classDescriptor='Test2'
     PROPERTY name:x type:kotlin.Any? visibility:public modality:FINAL flags:val
-      FIELD PROPERTY_BACKING_FIELD name:x type:kotlin.Any? visibility:public
+      FIELD PROPERTY_BACKING_FIELD name:x type:kotlin.Any? visibility:public flags:final
         EXPRESSION_BODY
           GET_VAR 'value-parameter x: Any?' type=kotlin.Any? origin=INITIALIZE_PROPERTY_FROM_PARAMETER
       FUN DEFAULT_PROPERTY_ACCESSOR name:<get-x> visibility:public modality:FINAL <> ($this:Test2) returnType:Any? flags:
@@ -303,7 +303,7 @@ FILE fqName:<root> fileName:/dataClasses.kt
         DELEGATING_CONSTRUCTOR_CALL 'constructor Any()'
         INSTANCE_INITIALIZER_CALL classDescriptor='Test3'
     PROPERTY name:d type:kotlin.Double visibility:public modality:FINAL flags:val
-      FIELD PROPERTY_BACKING_FIELD name:d type:kotlin.Double visibility:public
+      FIELD PROPERTY_BACKING_FIELD name:d type:kotlin.Double visibility:public flags:final
         EXPRESSION_BODY
           GET_VAR 'value-parameter d: Double' type=kotlin.Double origin=INITIALIZE_PROPERTY_FROM_PARAMETER
       FUN DEFAULT_PROPERTY_ACCESSOR name:<get-d> visibility:public modality:FINAL <> ($this:Test3) returnType:Double flags:
@@ -313,7 +313,7 @@ FILE fqName:<root> fileName:/dataClasses.kt
             GET_FIELD 'd: Double' type=kotlin.Double origin=null
               receiver: GET_VAR 'this@Test3: Test3' type=Test3 origin=null
     PROPERTY name:dn type:kotlin.Double? visibility:public modality:FINAL flags:val
-      FIELD PROPERTY_BACKING_FIELD name:dn type:kotlin.Double? visibility:public
+      FIELD PROPERTY_BACKING_FIELD name:dn type:kotlin.Double? visibility:public flags:final
         EXPRESSION_BODY
           GET_VAR 'value-parameter dn: Double?' type=kotlin.Double? origin=INITIALIZE_PROPERTY_FROM_PARAMETER
       FUN DEFAULT_PROPERTY_ACCESSOR name:<get-dn> visibility:public modality:FINAL <> ($this:Test3) returnType:Double? flags:
@@ -323,7 +323,7 @@ FILE fqName:<root> fileName:/dataClasses.kt
             GET_FIELD 'dn: Double?' type=kotlin.Double? origin=null
               receiver: GET_VAR 'this@Test3: Test3' type=Test3 origin=null
     PROPERTY name:f type:kotlin.Float visibility:public modality:FINAL flags:val
-      FIELD PROPERTY_BACKING_FIELD name:f type:kotlin.Float visibility:public
+      FIELD PROPERTY_BACKING_FIELD name:f type:kotlin.Float visibility:public flags:final
         EXPRESSION_BODY
           GET_VAR 'value-parameter f: Float' type=kotlin.Float origin=INITIALIZE_PROPERTY_FROM_PARAMETER
       FUN DEFAULT_PROPERTY_ACCESSOR name:<get-f> visibility:public modality:FINAL <> ($this:Test3) returnType:Float flags:
@@ -333,7 +333,7 @@ FILE fqName:<root> fileName:/dataClasses.kt
             GET_FIELD 'f: Float' type=kotlin.Float origin=null
               receiver: GET_VAR 'this@Test3: Test3' type=Test3 origin=null
     PROPERTY name:df type:kotlin.Float? visibility:public modality:FINAL flags:val
-      FIELD PROPERTY_BACKING_FIELD name:df type:kotlin.Float? visibility:public
+      FIELD PROPERTY_BACKING_FIELD name:df type:kotlin.Float? visibility:public flags:final
         EXPRESSION_BODY
           GET_VAR 'value-parameter df: Float?' type=kotlin.Float? origin=INITIALIZE_PROPERTY_FROM_PARAMETER
       FUN DEFAULT_PROPERTY_ACCESSOR name:<get-df> visibility:public modality:FINAL <> ($this:Test3) returnType:Float? flags:
diff --git a/compiler/testData/ir/irText/classes/dataClassesGeneric.txt b/compiler/testData/ir/irText/classes/dataClassesGeneric.txt
index 9942cb45c5c..08f17d97c0a 100644
--- a/compiler/testData/ir/irText/classes/dataClassesGeneric.txt
+++ b/compiler/testData/ir/irText/classes/dataClassesGeneric.txt
@@ -12,7 +12,7 @@ FILE fqName:<root> fileName:/dataClassesGeneric.kt
         DELEGATING_CONSTRUCTOR_CALL 'constructor Any()'
         INSTANCE_INITIALIZER_CALL classDescriptor='Test1'
     PROPERTY name:x type:T visibility:public modality:FINAL flags:val
-      FIELD PROPERTY_BACKING_FIELD name:x type:T visibility:public
+      FIELD PROPERTY_BACKING_FIELD name:x type:T visibility:public flags:final
         EXPRESSION_BODY
           GET_VAR 'value-parameter x: T' type=T origin=INITIALIZE_PROPERTY_FROM_PARAMETER
       FUN DEFAULT_PROPERTY_ACCESSOR name:<get-x> visibility:public modality:FINAL <> ($this:Test1<T>) returnType:T flags:
diff --git a/compiler/testData/ir/irText/classes/delegatedImplementation.txt b/compiler/testData/ir/irText/classes/delegatedImplementation.txt
index 95f839e5107..4c3e6a61d86 100644
--- a/compiler/testData/ir/irText/classes/delegatedImplementation.txt
+++ b/compiler/testData/ir/irText/classes/delegatedImplementation.txt
@@ -119,7 +119,7 @@ FILE fqName:<root> fileName:/delegatedImplementation.kt
                 DELEGATING_CONSTRUCTOR_CALL 'constructor Any()'
                 INSTANCE_INITIALIZER_CALL classDescriptor='<no name provided>'
             PROPERTY name:x type:kotlin.String visibility:public modality:OPEN flags:val
-              FIELD PROPERTY_BACKING_FIELD name:x type:kotlin.String visibility:public
+              FIELD PROPERTY_BACKING_FIELD name:x type:kotlin.String visibility:public flags:
                 EXPRESSION_BODY
                   GET_VAR 'value-parameter x0: String' type=kotlin.String origin=null
               FUN DEFAULT_PROPERTY_ACCESSOR name:<get-x> visibility:public modality:OPEN <> ($this:otherImpl.<no name provided>) returnType:String flags:
@@ -131,7 +131,7 @@ FILE fqName:<root> fileName:/delegatedImplementation.kt
                     GET_FIELD 'x: String' type=kotlin.String origin=null
                       receiver: GET_VAR 'this@<no name provided>: <no name provided>' type=otherImpl.<no name provided> origin=null
             PROPERTY name:y type:kotlin.Int visibility:public modality:OPEN flags:var
-              FIELD PROPERTY_BACKING_FIELD name:y type:kotlin.Int visibility:public
+              FIELD PROPERTY_BACKING_FIELD name:y type:kotlin.Int visibility:public flags:
                 EXPRESSION_BODY
                   GET_VAR 'value-parameter y0: Int' type=kotlin.Int origin=null
               FUN DEFAULT_PROPERTY_ACCESSOR name:<get-y> visibility:public modality:OPEN <> ($this:otherImpl.<no name provided>) returnType:Int flags:
@@ -198,7 +198,7 @@ FILE fqName:<root> fileName:/delegatedImplementation.kt
       BLOCK_BODY
         DELEGATING_CONSTRUCTOR_CALL 'constructor Any()'
         INSTANCE_INITIALIZER_CALL classDescriptor='Test1'
-    FIELD DELEGATE name:Test1$IBase$delegate type:BaseImpl visibility:private
+    FIELD DELEGATE name:Test1$IBase$delegate type:BaseImpl visibility:private flags:final
       EXPRESSION_BODY
         GET_OBJECT 'BaseImpl' type=BaseImpl
     FUN DELEGATED_MEMBER name:bar visibility:public modality:OPEN <> ($this:Test1) returnType:Int flags:
@@ -254,7 +254,7 @@ FILE fqName:<root> fileName:/delegatedImplementation.kt
       BLOCK_BODY
         DELEGATING_CONSTRUCTOR_CALL 'constructor Any()'
         INSTANCE_INITIALIZER_CALL classDescriptor='Test2'
-    FIELD DELEGATE name:Test2$IBase$delegate type:BaseImpl visibility:private
+    FIELD DELEGATE name:Test2$IBase$delegate type:BaseImpl visibility:private flags:final
       EXPRESSION_BODY
         GET_OBJECT 'BaseImpl' type=BaseImpl
     FUN DELEGATED_MEMBER name:bar visibility:public modality:OPEN <> ($this:Test2) returnType:Int flags:
@@ -288,7 +288,7 @@ FILE fqName:<root> fileName:/delegatedImplementation.kt
           $this: GET_FIELD '`Test2$IBase$delegate`: BaseImpl' type=BaseImpl origin=null
             receiver: GET_VAR 'this@Test2: Test2' type=Test2 origin=null
           $receiver: GET_VAR 'this@qux: String' type=kotlin.String origin=null
-    FIELD DELEGATE name:Test2$IOther$delegate type:IOther visibility:private
+    FIELD DELEGATE name:Test2$IOther$delegate type:IOther visibility:private flags:final
       EXPRESSION_BODY
         CALL 'otherImpl(String, Int): IOther' type=IOther origin=null
           x0: CONST String type=kotlin.String value=
diff --git a/compiler/testData/ir/irText/classes/delegatedImplementationWithExplicitOverride.txt b/compiler/testData/ir/irText/classes/delegatedImplementationWithExplicitOverride.txt
index 06ad84aa72b..f7f8568cde6 100644
--- a/compiler/testData/ir/irText/classes/delegatedImplementationWithExplicitOverride.txt
+++ b/compiler/testData/ir/irText/classes/delegatedImplementationWithExplicitOverride.txt
@@ -59,7 +59,7 @@ FILE fqName:<root> fileName:/delegatedImplementationWithExplicitOverride.kt
       BLOCK_BODY
         DELEGATING_CONSTRUCTOR_CALL 'constructor Any()'
         INSTANCE_INITIALIZER_CALL classDescriptor='C'
-    FIELD DELEGATE name:C$IFooBar$delegate type:FooBarImpl visibility:private
+    FIELD DELEGATE name:C$IFooBar$delegate type:FooBarImpl visibility:private flags:final
       EXPRESSION_BODY
         GET_OBJECT 'FooBarImpl' type=FooBarImpl
     FUN DELEGATED_MEMBER name:foo visibility:public modality:OPEN <> ($this:C) returnType:Unit flags:
diff --git a/compiler/testData/ir/irText/classes/delegatingConstructorCallToTypeAliasConstructor.txt b/compiler/testData/ir/irText/classes/delegatingConstructorCallToTypeAliasConstructor.txt
index ba172dc8db6..5e2d7733de0 100644
--- a/compiler/testData/ir/irText/classes/delegatingConstructorCallToTypeAliasConstructor.txt
+++ b/compiler/testData/ir/irText/classes/delegatingConstructorCallToTypeAliasConstructor.txt
@@ -12,7 +12,7 @@ FILE fqName:<root> fileName:/delegatingConstructorCallToTypeAliasConstructor.kt
         DELEGATING_CONSTRUCTOR_CALL 'constructor Any()'
         INSTANCE_INITIALIZER_CALL classDescriptor='Cell'
     PROPERTY name:value type:T visibility:public modality:FINAL flags:val
-      FIELD PROPERTY_BACKING_FIELD name:value type:T visibility:public
+      FIELD PROPERTY_BACKING_FIELD name:value type:T visibility:public flags:final
         EXPRESSION_BODY
           GET_VAR 'value-parameter value: T' type=T origin=INITIALIZE_PROPERTY_FROM_PARAMETER
       FUN DEFAULT_PROPERTY_ACCESSOR name:<get-value> visibility:public modality:FINAL <> ($this:Cell<T>) returnType:T flags:
diff --git a/compiler/testData/ir/irText/classes/enum.txt b/compiler/testData/ir/irText/classes/enum.txt
index 7a1204eceae..15e3ae0b414 100644
--- a/compiler/testData/ir/irText/classes/enum.txt
+++ b/compiler/testData/ir/irText/classes/enum.txt
@@ -68,7 +68,7 @@ FILE fqName:<root> fileName:/enum.kt
           <E : Enum<E>>: TestEnum2
         INSTANCE_INITIALIZER_CALL classDescriptor='TestEnum2'
     PROPERTY name:x type:kotlin.Int visibility:public modality:FINAL flags:val
-      FIELD PROPERTY_BACKING_FIELD name:x type:kotlin.Int visibility:public
+      FIELD PROPERTY_BACKING_FIELD name:x type:kotlin.Int visibility:public flags:final
         EXPRESSION_BODY
           GET_VAR 'value-parameter x: Int' type=kotlin.Int origin=INITIALIZE_PROPERTY_FROM_PARAMETER
       FUN DEFAULT_PROPERTY_ACCESSOR name:<get-x> visibility:public modality:FINAL <> ($this:TestEnum2) returnType:Int flags:
@@ -255,7 +255,7 @@ FILE fqName:<root> fileName:/enum.kt
           <E : Enum<E>>: TestEnum4
         INSTANCE_INITIALIZER_CALL classDescriptor='TestEnum4'
     PROPERTY name:x type:kotlin.Int visibility:public modality:FINAL flags:val
-      FIELD PROPERTY_BACKING_FIELD name:x type:kotlin.Int visibility:public
+      FIELD PROPERTY_BACKING_FIELD name:x type:kotlin.Int visibility:public flags:final
         EXPRESSION_BODY
           GET_VAR 'value-parameter x: Int' type=kotlin.Int origin=INITIALIZE_PROPERTY_FROM_PARAMETER
       FUN DEFAULT_PROPERTY_ACCESSOR name:<get-x> visibility:public modality:FINAL <> ($this:TestEnum4) returnType:Int flags:
@@ -339,7 +339,7 @@ FILE fqName:<root> fileName:/enum.kt
               x: CONST Int type=kotlin.Int value=2
             INSTANCE_INITIALIZER_CALL classDescriptor='TEST2'
         PROPERTY name:z type:kotlin.Int visibility:public modality:FINAL flags:val
-          FIELD PROPERTY_BACKING_FIELD name:z type:kotlin.Int visibility:public
+          FIELD PROPERTY_BACKING_FIELD name:z type:kotlin.Int visibility:public flags:final
           FUN DEFAULT_PROPERTY_ACCESSOR name:<get-z> visibility:public modality:FINAL <> ($this:TestEnum4.TEST2) returnType:Int flags:
             $this: VALUE_PARAMETER name:<this> type:TestEnum4.TEST2 flags:
             BLOCK_BODY
@@ -464,7 +464,7 @@ FILE fqName:<root> fileName:/enum.kt
           <E : Enum<E>>: TestEnum5
         INSTANCE_INITIALIZER_CALL classDescriptor='TestEnum5'
     PROPERTY name:x type:kotlin.Int visibility:public modality:FINAL flags:val
-      FIELD PROPERTY_BACKING_FIELD name:x type:kotlin.Int visibility:public
+      FIELD PROPERTY_BACKING_FIELD name:x type:kotlin.Int visibility:public flags:final
         EXPRESSION_BODY
           GET_VAR 'value-parameter x: Int = ...' type=kotlin.Int origin=INITIALIZE_PROPERTY_FROM_PARAMETER
       FUN DEFAULT_PROPERTY_ACCESSOR name:<get-x> visibility:public modality:FINAL <> ($this:TestEnum5) returnType:Int flags:
diff --git a/compiler/testData/ir/irText/classes/enumWithSecondaryCtor.txt b/compiler/testData/ir/irText/classes/enumWithSecondaryCtor.txt
index 6cab852d7a3..8894d3de1cb 100644
--- a/compiler/testData/ir/irText/classes/enumWithSecondaryCtor.txt
+++ b/compiler/testData/ir/irText/classes/enumWithSecondaryCtor.txt
@@ -10,7 +10,7 @@ FILE fqName:<root> fileName:/enumWithSecondaryCtor.kt
           <E : Enum<E>>: Test0
         INSTANCE_INITIALIZER_CALL classDescriptor='Test0'
     PROPERTY name:x type:kotlin.Int visibility:public modality:FINAL flags:val
-      FIELD PROPERTY_BACKING_FIELD name:x type:kotlin.Int visibility:public
+      FIELD PROPERTY_BACKING_FIELD name:x type:kotlin.Int visibility:public flags:final
         EXPRESSION_BODY
           GET_VAR 'value-parameter x: Int' type=kotlin.Int origin=INITIALIZE_PROPERTY_FROM_PARAMETER
       FUN DEFAULT_PROPERTY_ACCESSOR name:<get-x> visibility:public modality:FINAL <> ($this:Test0) returnType:Int flags:
@@ -81,7 +81,7 @@ FILE fqName:<root> fileName:/enumWithSecondaryCtor.kt
           <E : Enum<E>>: Test1
         INSTANCE_INITIALIZER_CALL classDescriptor='Test1'
     PROPERTY name:x type:kotlin.Int visibility:public modality:FINAL flags:val
-      FIELD PROPERTY_BACKING_FIELD name:x type:kotlin.Int visibility:public
+      FIELD PROPERTY_BACKING_FIELD name:x type:kotlin.Int visibility:public flags:final
         EXPRESSION_BODY
           GET_VAR 'value-parameter x: Int' type=kotlin.Int origin=INITIALIZE_PROPERTY_FROM_PARAMETER
       FUN DEFAULT_PROPERTY_ACCESSOR name:<get-x> visibility:public modality:FINAL <> ($this:Test1) returnType:Int flags:
@@ -155,7 +155,7 @@ FILE fqName:<root> fileName:/enumWithSecondaryCtor.kt
           <E : Enum<E>>: Test2
         INSTANCE_INITIALIZER_CALL classDescriptor='Test2'
     PROPERTY name:x type:kotlin.Int visibility:public modality:FINAL flags:val
-      FIELD PROPERTY_BACKING_FIELD name:x type:kotlin.Int visibility:public
+      FIELD PROPERTY_BACKING_FIELD name:x type:kotlin.Int visibility:public flags:final
         EXPRESSION_BODY
           GET_VAR 'value-parameter x: Int' type=kotlin.Int origin=INITIALIZE_PROPERTY_FROM_PARAMETER
       FUN DEFAULT_PROPERTY_ACCESSOR name:<get-x> visibility:public modality:FINAL <> ($this:Test2) returnType:Int flags:
diff --git a/compiler/testData/ir/irText/classes/initBlock.txt b/compiler/testData/ir/irText/classes/initBlock.txt
index e42138e0c7d..c1d224185e4 100644
--- a/compiler/testData/ir/irText/classes/initBlock.txt
+++ b/compiler/testData/ir/irText/classes/initBlock.txt
@@ -33,7 +33,7 @@ FILE fqName:<root> fileName:/initBlock.kt
         DELEGATING_CONSTRUCTOR_CALL 'constructor Any()'
         INSTANCE_INITIALIZER_CALL classDescriptor='Test2'
     PROPERTY name:x type:kotlin.Int visibility:public modality:FINAL flags:val
-      FIELD PROPERTY_BACKING_FIELD name:x type:kotlin.Int visibility:public
+      FIELD PROPERTY_BACKING_FIELD name:x type:kotlin.Int visibility:public flags:final
         EXPRESSION_BODY
           GET_VAR 'value-parameter x: Int' type=kotlin.Int origin=INITIALIZE_PROPERTY_FROM_PARAMETER
       FUN DEFAULT_PROPERTY_ACCESSOR name:<get-x> visibility:public modality:FINAL <> ($this:Test2) returnType:Int flags:
diff --git a/compiler/testData/ir/irText/classes/initVal.txt b/compiler/testData/ir/irText/classes/initVal.txt
index c4eabe4b3b9..8c8eed1bc5d 100644
--- a/compiler/testData/ir/irText/classes/initVal.txt
+++ b/compiler/testData/ir/irText/classes/initVal.txt
@@ -9,7 +9,7 @@ FILE fqName:<root> fileName:/initVal.kt
         DELEGATING_CONSTRUCTOR_CALL 'constructor Any()'
         INSTANCE_INITIALIZER_CALL classDescriptor='TestInitValFromParameter'
     PROPERTY name:x type:kotlin.Int visibility:public modality:FINAL flags:val
-      FIELD PROPERTY_BACKING_FIELD name:x type:kotlin.Int visibility:public
+      FIELD PROPERTY_BACKING_FIELD name:x type:kotlin.Int visibility:public flags:final
         EXPRESSION_BODY
           GET_VAR 'value-parameter x: Int' type=kotlin.Int origin=INITIALIZE_PROPERTY_FROM_PARAMETER
       FUN DEFAULT_PROPERTY_ACCESSOR name:<get-x> visibility:public modality:FINAL <> ($this:TestInitValFromParameter) returnType:Int flags:
@@ -40,7 +40,7 @@ FILE fqName:<root> fileName:/initVal.kt
         DELEGATING_CONSTRUCTOR_CALL 'constructor Any()'
         INSTANCE_INITIALIZER_CALL classDescriptor='TestInitValInClass'
     PROPERTY name:x type:kotlin.Int visibility:public modality:FINAL flags:val
-      FIELD PROPERTY_BACKING_FIELD name:x type:kotlin.Int visibility:public
+      FIELD PROPERTY_BACKING_FIELD name:x type:kotlin.Int visibility:public flags:final
         EXPRESSION_BODY
           CONST Int type=kotlin.Int value=0
       FUN DEFAULT_PROPERTY_ACCESSOR name:<get-x> visibility:public modality:FINAL <> ($this:TestInitValInClass) returnType:Int flags:
@@ -71,7 +71,7 @@ FILE fqName:<root> fileName:/initVal.kt
         DELEGATING_CONSTRUCTOR_CALL 'constructor Any()'
         INSTANCE_INITIALIZER_CALL classDescriptor='TestInitValInInitBlock'
     PROPERTY name:x type:kotlin.Int visibility:public modality:FINAL flags:val
-      FIELD PROPERTY_BACKING_FIELD name:x type:kotlin.Int visibility:public
+      FIELD PROPERTY_BACKING_FIELD name:x type:kotlin.Int visibility:public flags:final
       FUN DEFAULT_PROPERTY_ACCESSOR name:<get-x> visibility:public modality:FINAL <> ($this:TestInitValInInitBlock) returnType:Int flags:
         $this: VALUE_PARAMETER name:<this> type:TestInitValInInitBlock flags:
         BLOCK_BODY
diff --git a/compiler/testData/ir/irText/classes/initVar.txt b/compiler/testData/ir/irText/classes/initVar.txt
index c8091ff26d0..29f80695377 100644
--- a/compiler/testData/ir/irText/classes/initVar.txt
+++ b/compiler/testData/ir/irText/classes/initVar.txt
@@ -9,7 +9,7 @@ FILE fqName:<root> fileName:/initVar.kt
         DELEGATING_CONSTRUCTOR_CALL 'constructor Any()'
         INSTANCE_INITIALIZER_CALL classDescriptor='TestInitVarFromParameter'
     PROPERTY name:x type:kotlin.Int visibility:public modality:FINAL flags:var
-      FIELD PROPERTY_BACKING_FIELD name:x type:kotlin.Int visibility:public
+      FIELD PROPERTY_BACKING_FIELD name:x type:kotlin.Int visibility:public flags:final
         EXPRESSION_BODY
           GET_VAR 'value-parameter x: Int' type=kotlin.Int origin=INITIALIZE_PROPERTY_FROM_PARAMETER
       FUN DEFAULT_PROPERTY_ACCESSOR name:<get-x> visibility:public modality:FINAL <> ($this:TestInitVarFromParameter) returnType:Int flags:
@@ -47,7 +47,7 @@ FILE fqName:<root> fileName:/initVar.kt
         DELEGATING_CONSTRUCTOR_CALL 'constructor Any()'
         INSTANCE_INITIALIZER_CALL classDescriptor='TestInitVarInClass'
     PROPERTY name:x type:kotlin.Int visibility:public modality:FINAL flags:var
-      FIELD PROPERTY_BACKING_FIELD name:x type:kotlin.Int visibility:public
+      FIELD PROPERTY_BACKING_FIELD name:x type:kotlin.Int visibility:public flags:final
         EXPRESSION_BODY
           CONST Int type=kotlin.Int value=0
       FUN DEFAULT_PROPERTY_ACCESSOR name:<get-x> visibility:public modality:FINAL <> ($this:TestInitVarInClass) returnType:Int flags:
@@ -85,7 +85,7 @@ FILE fqName:<root> fileName:/initVar.kt
         DELEGATING_CONSTRUCTOR_CALL 'constructor Any()'
         INSTANCE_INITIALIZER_CALL classDescriptor='TestInitVarInInitBlock'
     PROPERTY name:x type:kotlin.Int visibility:public modality:FINAL flags:var
-      FIELD PROPERTY_BACKING_FIELD name:x type:kotlin.Int visibility:public
+      FIELD PROPERTY_BACKING_FIELD name:x type:kotlin.Int visibility:public flags:final
       FUN DEFAULT_PROPERTY_ACCESSOR name:<get-x> visibility:public modality:FINAL <> ($this:TestInitVarInInitBlock) returnType:Int flags:
         $this: VALUE_PARAMETER name:<this> type:TestInitVarInInitBlock flags:
         BLOCK_BODY
@@ -126,7 +126,7 @@ FILE fqName:<root> fileName:/initVar.kt
         DELEGATING_CONSTRUCTOR_CALL 'constructor Any()'
         INSTANCE_INITIALIZER_CALL classDescriptor='TestInitVarWithCustomSetter'
     PROPERTY name:x type:kotlin.Int visibility:public modality:FINAL flags:var
-      FIELD PROPERTY_BACKING_FIELD name:x type:kotlin.Int visibility:public
+      FIELD PROPERTY_BACKING_FIELD name:x type:kotlin.Int visibility:public flags:final
         EXPRESSION_BODY
           CONST Int type=kotlin.Int value=0
       FUN DEFAULT_PROPERTY_ACCESSOR name:<get-x> visibility:public modality:FINAL <> ($this:TestInitVarWithCustomSetter) returnType:Int flags:
@@ -160,7 +160,7 @@ FILE fqName:<root> fileName:/initVar.kt
     superClasses:
       CLASS IR_EXTERNAL_DECLARATION_STUB CLASS name:Any modality:OPEN visibility:public flags:
     PROPERTY name:x type:kotlin.Int visibility:public modality:FINAL flags:var
-      FIELD PROPERTY_BACKING_FIELD name:x type:kotlin.Int visibility:public
+      FIELD PROPERTY_BACKING_FIELD name:x type:kotlin.Int visibility:public flags:final
       FUN DEFAULT_PROPERTY_ACCESSOR name:<get-x> visibility:public modality:FINAL <> ($this:TestInitVarWithCustomSetterWithExplicitCtor) returnType:Int flags:
         $this: VALUE_PARAMETER name:<this> type:TestInitVarWithCustomSetterWithExplicitCtor flags:
         BLOCK_BODY
@@ -201,7 +201,7 @@ FILE fqName:<root> fileName:/initVar.kt
     superClasses:
       CLASS IR_EXTERNAL_DECLARATION_STUB CLASS name:Any modality:OPEN visibility:public flags:
     PROPERTY name:x type:kotlin.Int visibility:public modality:FINAL flags:var
-      FIELD PROPERTY_BACKING_FIELD name:x type:kotlin.Int visibility:public
+      FIELD PROPERTY_BACKING_FIELD name:x type:kotlin.Int visibility:public flags:final
       FUN DEFAULT_PROPERTY_ACCESSOR name:<get-x> visibility:public modality:FINAL <> ($this:TestInitVarWithCustomSetterInCtor) returnType:Int flags:
         $this: VALUE_PARAMETER name:<this> type:TestInitVarWithCustomSetterInCtor flags:
         BLOCK_BODY
diff --git a/compiler/testData/ir/irText/classes/innerClassWithDelegatingConstructor.txt b/compiler/testData/ir/irText/classes/innerClassWithDelegatingConstructor.txt
index 9247f28ed64..1739a2e3766 100644
--- a/compiler/testData/ir/irText/classes/innerClassWithDelegatingConstructor.txt
+++ b/compiler/testData/ir/irText/classes/innerClassWithDelegatingConstructor.txt
@@ -18,7 +18,7 @@ FILE fqName:<root> fileName:/innerClassWithDelegatingConstructor.kt
           DELEGATING_CONSTRUCTOR_CALL 'constructor Any()'
           INSTANCE_INITIALIZER_CALL classDescriptor='Inner'
       PROPERTY name:x type:kotlin.Int visibility:public modality:FINAL flags:val
-        FIELD PROPERTY_BACKING_FIELD name:x type:kotlin.Int visibility:public
+        FIELD PROPERTY_BACKING_FIELD name:x type:kotlin.Int visibility:public flags:final
           EXPRESSION_BODY
             GET_VAR 'value-parameter x: Int' type=kotlin.Int origin=INITIALIZE_PROPERTY_FROM_PARAMETER
         FUN DEFAULT_PROPERTY_ACCESSOR name:<get-x> visibility:public modality:FINAL <> ($this:Outer.Inner) returnType:Int flags:
diff --git a/compiler/testData/ir/irText/classes/lambdaInDataClassDefaultParameter.txt b/compiler/testData/ir/irText/classes/lambdaInDataClassDefaultParameter.txt
index d31720d65bb..9406eddf9a3 100644
--- a/compiler/testData/ir/irText/classes/lambdaInDataClassDefaultParameter.txt
+++ b/compiler/testData/ir/irText/classes/lambdaInDataClassDefaultParameter.txt
@@ -18,7 +18,7 @@ FILE fqName:<root> fileName:/lambdaInDataClassDefaultParameter.kt
         DELEGATING_CONSTRUCTOR_CALL 'constructor Any()'
         INSTANCE_INITIALIZER_CALL classDescriptor='A'
     PROPERTY name:runA type:A.(kotlin.String) -> kotlin.Unit visibility:public modality:FINAL flags:val
-      FIELD PROPERTY_BACKING_FIELD name:runA type:A.(kotlin.String) -> kotlin.Unit visibility:public
+      FIELD PROPERTY_BACKING_FIELD name:runA type:A.(kotlin.String) -> kotlin.Unit visibility:public flags:final
         EXPRESSION_BODY
           GET_VAR 'value-parameter runA: A.(String) -> Unit = ...' type=A.(kotlin.String) -> kotlin.Unit origin=INITIALIZE_PROPERTY_FROM_PARAMETER
       FUN DEFAULT_PROPERTY_ACCESSOR name:<get-runA> visibility:public modality:FINAL <> ($this:A) returnType:[@kotlin.ExtensionFunctionType] Function2<A, String, Unit> flags:
@@ -138,7 +138,7 @@ FILE fqName:<root> fileName:/lambdaInDataClassDefaultParameter.kt
         DELEGATING_CONSTRUCTOR_CALL 'constructor Any()'
         INSTANCE_INITIALIZER_CALL classDescriptor='B'
     PROPERTY name:x type:kotlin.Any visibility:public modality:FINAL flags:val
-      FIELD PROPERTY_BACKING_FIELD name:x type:kotlin.Any visibility:public
+      FIELD PROPERTY_BACKING_FIELD name:x type:kotlin.Any visibility:public flags:final
         EXPRESSION_BODY
           GET_VAR 'value-parameter x: Any = ...' type=kotlin.Any origin=INITIALIZE_PROPERTY_FROM_PARAMETER
       FUN DEFAULT_PROPERTY_ACCESSOR name:<get-x> visibility:public modality:FINAL <> ($this:B) returnType:Any flags:
diff --git a/compiler/testData/ir/irText/classes/objectLiteralExpressions.txt b/compiler/testData/ir/irText/classes/objectLiteralExpressions.txt
index d72990e04f3..823a9c040b9 100644
--- a/compiler/testData/ir/irText/classes/objectLiteralExpressions.txt
+++ b/compiler/testData/ir/irText/classes/objectLiteralExpressions.txt
@@ -19,7 +19,7 @@ FILE fqName:<root> fileName:/objectLiteralExpressions.kt
         FUN IR_EXTERNAL_DECLARATION_STUB name:toString visibility:public modality:OPEN <> ($this:kotlin.Any) returnType:String flags:
       $this: VALUE_PARAMETER name:<this> type:kotlin.Any flags:
   PROPERTY name:test1 type:kotlin.Any visibility:public modality:FINAL flags:val
-    FIELD PROPERTY_BACKING_FIELD name:test1 type:kotlin.Any visibility:public
+    FIELD PROPERTY_BACKING_FIELD name:test1 type:kotlin.Any visibility:public flags:final
       EXPRESSION_BODY
         BLOCK type=test1.<no name provided> origin=OBJECT_LITERAL
           CLASS CLASS name:<no name provided> modality:FINAL visibility:local flags:
@@ -49,7 +49,7 @@ FILE fqName:<root> fileName:/objectLiteralExpressions.kt
         RETURN type=kotlin.Nothing from='<get-test1>(): Any'
           GET_FIELD 'test1: Any' type=kotlin.Any origin=null
   PROPERTY name:test2 type:IFoo visibility:public modality:FINAL flags:val
-    FIELD PROPERTY_BACKING_FIELD name:test2 type:IFoo visibility:public
+    FIELD PROPERTY_BACKING_FIELD name:test2 type:IFoo visibility:public flags:final
       EXPRESSION_BODY
         BLOCK type=test2.<no name provided> origin=OBJECT_LITERAL
           CLASS CLASS name:<no name provided> modality:FINAL visibility:local flags:
diff --git a/compiler/testData/ir/irText/classes/objectWithInitializers.txt b/compiler/testData/ir/irText/classes/objectWithInitializers.txt
index 4b57b308ba3..daa0a7945e4 100644
--- a/compiler/testData/ir/irText/classes/objectWithInitializers.txt
+++ b/compiler/testData/ir/irText/classes/objectWithInitializers.txt
@@ -29,7 +29,7 @@ FILE fqName:<root> fileName:/objectWithInitializers.kt
         DELEGATING_CONSTRUCTOR_CALL 'constructor Base()'
         INSTANCE_INITIALIZER_CALL classDescriptor='Test'
     PROPERTY name:x type:kotlin.Int visibility:public modality:FINAL flags:val
-      FIELD PROPERTY_BACKING_FIELD name:x type:kotlin.Int visibility:public
+      FIELD PROPERTY_BACKING_FIELD name:x type:kotlin.Int visibility:public flags:final
         EXPRESSION_BODY
           CONST Int type=kotlin.Int value=1
       FUN DEFAULT_PROPERTY_ACCESSOR name:<get-x> visibility:public modality:FINAL <> ($this:Test) returnType:Int flags:
@@ -39,7 +39,7 @@ FILE fqName:<root> fileName:/objectWithInitializers.kt
             GET_FIELD 'x: Int' type=kotlin.Int origin=null
               receiver: GET_VAR 'this@Test: Test' type=Test origin=null
     PROPERTY name:y type:kotlin.Int visibility:public modality:FINAL flags:val
-      FIELD PROPERTY_BACKING_FIELD name:y type:kotlin.Int visibility:public
+      FIELD PROPERTY_BACKING_FIELD name:y type:kotlin.Int visibility:public flags:final
       FUN DEFAULT_PROPERTY_ACCESSOR name:<get-y> visibility:public modality:FINAL <> ($this:Test) returnType:Int flags:
         $this: VALUE_PARAMETER name:<this> type:Test flags:
         BLOCK_BODY
diff --git a/compiler/testData/ir/irText/classes/primaryConstructor.txt b/compiler/testData/ir/irText/classes/primaryConstructor.txt
index eec5b2a9736..1578728deb8 100644
--- a/compiler/testData/ir/irText/classes/primaryConstructor.txt
+++ b/compiler/testData/ir/irText/classes/primaryConstructor.txt
@@ -10,7 +10,7 @@ FILE fqName:<root> fileName:/primaryConstructor.kt
         DELEGATING_CONSTRUCTOR_CALL 'constructor Any()'
         INSTANCE_INITIALIZER_CALL classDescriptor='Test1'
     PROPERTY name:x type:kotlin.Int visibility:public modality:FINAL flags:val
-      FIELD PROPERTY_BACKING_FIELD name:x type:kotlin.Int visibility:public
+      FIELD PROPERTY_BACKING_FIELD name:x type:kotlin.Int visibility:public flags:final
         EXPRESSION_BODY
           GET_VAR 'value-parameter x: Int' type=kotlin.Int origin=INITIALIZE_PROPERTY_FROM_PARAMETER
       FUN DEFAULT_PROPERTY_ACCESSOR name:<get-x> visibility:public modality:FINAL <> ($this:Test1) returnType:Int flags:
@@ -20,7 +20,7 @@ FILE fqName:<root> fileName:/primaryConstructor.kt
             GET_FIELD 'x: Int' type=kotlin.Int origin=null
               receiver: GET_VAR 'this@Test1: Test1' type=Test1 origin=null
     PROPERTY name:y type:kotlin.Int visibility:public modality:FINAL flags:val
-      FIELD PROPERTY_BACKING_FIELD name:y type:kotlin.Int visibility:public
+      FIELD PROPERTY_BACKING_FIELD name:y type:kotlin.Int visibility:public flags:final
         EXPRESSION_BODY
           GET_VAR 'value-parameter y: Int' type=kotlin.Int origin=INITIALIZE_PROPERTY_FROM_PARAMETER
       FUN DEFAULT_PROPERTY_ACCESSOR name:<get-y> visibility:public modality:FINAL <> ($this:Test1) returnType:Int flags:
@@ -53,7 +53,7 @@ FILE fqName:<root> fileName:/primaryConstructor.kt
         DELEGATING_CONSTRUCTOR_CALL 'constructor Any()'
         INSTANCE_INITIALIZER_CALL classDescriptor='Test2'
     PROPERTY name:y type:kotlin.Int visibility:public modality:FINAL flags:val
-      FIELD PROPERTY_BACKING_FIELD name:y type:kotlin.Int visibility:public
+      FIELD PROPERTY_BACKING_FIELD name:y type:kotlin.Int visibility:public flags:final
         EXPRESSION_BODY
           GET_VAR 'value-parameter y: Int' type=kotlin.Int origin=INITIALIZE_PROPERTY_FROM_PARAMETER
       FUN DEFAULT_PROPERTY_ACCESSOR name:<get-y> visibility:public modality:FINAL <> ($this:Test2) returnType:Int flags:
@@ -63,7 +63,7 @@ FILE fqName:<root> fileName:/primaryConstructor.kt
             GET_FIELD 'y: Int' type=kotlin.Int origin=null
               receiver: GET_VAR 'this@Test2: Test2' type=Test2 origin=null
     PROPERTY name:x type:kotlin.Int visibility:public modality:FINAL flags:val
-      FIELD PROPERTY_BACKING_FIELD name:x type:kotlin.Int visibility:public
+      FIELD PROPERTY_BACKING_FIELD name:x type:kotlin.Int visibility:public flags:final
         EXPRESSION_BODY
           GET_VAR 'value-parameter x: Int' type=kotlin.Int origin=null
       FUN DEFAULT_PROPERTY_ACCESSOR name:<get-x> visibility:public modality:FINAL <> ($this:Test2) returnType:Int flags:
@@ -96,7 +96,7 @@ FILE fqName:<root> fileName:/primaryConstructor.kt
         DELEGATING_CONSTRUCTOR_CALL 'constructor Any()'
         INSTANCE_INITIALIZER_CALL classDescriptor='Test3'
     PROPERTY name:y type:kotlin.Int visibility:public modality:FINAL flags:val
-      FIELD PROPERTY_BACKING_FIELD name:y type:kotlin.Int visibility:public
+      FIELD PROPERTY_BACKING_FIELD name:y type:kotlin.Int visibility:public flags:final
         EXPRESSION_BODY
           GET_VAR 'value-parameter y: Int' type=kotlin.Int origin=INITIALIZE_PROPERTY_FROM_PARAMETER
       FUN DEFAULT_PROPERTY_ACCESSOR name:<get-y> visibility:public modality:FINAL <> ($this:Test3) returnType:Int flags:
@@ -106,7 +106,7 @@ FILE fqName:<root> fileName:/primaryConstructor.kt
             GET_FIELD 'y: Int' type=kotlin.Int origin=null
               receiver: GET_VAR 'this@Test3: Test3' type=Test3 origin=null
     PROPERTY name:x type:kotlin.Int visibility:public modality:FINAL flags:val
-      FIELD PROPERTY_BACKING_FIELD name:x type:kotlin.Int visibility:public
+      FIELD PROPERTY_BACKING_FIELD name:x type:kotlin.Int visibility:public flags:final
       FUN DEFAULT_PROPERTY_ACCESSOR name:<get-x> visibility:public modality:FINAL <> ($this:Test3) returnType:Int flags:
         $this: VALUE_PARAMETER name:<this> type:Test3 flags:
         BLOCK_BODY
diff --git a/compiler/testData/ir/irText/classes/primaryConstructorWithSuperConstructorCall.txt b/compiler/testData/ir/irText/classes/primaryConstructorWithSuperConstructorCall.txt
index e09bb03aaa6..2e346cc89d1 100644
--- a/compiler/testData/ir/irText/classes/primaryConstructorWithSuperConstructorCall.txt
+++ b/compiler/testData/ir/irText/classes/primaryConstructorWithSuperConstructorCall.txt
@@ -73,7 +73,7 @@ FILE fqName:<root> fileName:/primaryConstructorWithSuperConstructorCall.kt
         DELEGATING_CONSTRUCTOR_CALL 'constructor Base()'
         INSTANCE_INITIALIZER_CALL classDescriptor='TestWithDelegatingConstructor'
     PROPERTY name:x type:kotlin.Int visibility:public modality:FINAL flags:val
-      FIELD PROPERTY_BACKING_FIELD name:x type:kotlin.Int visibility:public
+      FIELD PROPERTY_BACKING_FIELD name:x type:kotlin.Int visibility:public flags:final
         EXPRESSION_BODY
           GET_VAR 'value-parameter x: Int' type=kotlin.Int origin=INITIALIZE_PROPERTY_FROM_PARAMETER
       FUN DEFAULT_PROPERTY_ACCESSOR name:<get-x> visibility:public modality:FINAL <> ($this:TestWithDelegatingConstructor) returnType:Int flags:
@@ -83,7 +83,7 @@ FILE fqName:<root> fileName:/primaryConstructorWithSuperConstructorCall.kt
             GET_FIELD 'x: Int' type=kotlin.Int origin=null
               receiver: GET_VAR 'this@TestWithDelegatingConstructor: TestWithDelegatingConstructor' type=TestWithDelegatingConstructor origin=null
     PROPERTY name:y type:kotlin.Int visibility:public modality:FINAL flags:val
-      FIELD PROPERTY_BACKING_FIELD name:y type:kotlin.Int visibility:public
+      FIELD PROPERTY_BACKING_FIELD name:y type:kotlin.Int visibility:public flags:final
         EXPRESSION_BODY
           GET_VAR 'value-parameter y: Int' type=kotlin.Int origin=INITIALIZE_PROPERTY_FROM_PARAMETER
       FUN DEFAULT_PROPERTY_ACCESSOR name:<get-y> visibility:public modality:FINAL <> ($this:TestWithDelegatingConstructor) returnType:Int flags:
diff --git a/compiler/testData/ir/irText/classes/sealedClasses.txt b/compiler/testData/ir/irText/classes/sealedClasses.txt
index 36b1efc289b..e6381483d40 100644
--- a/compiler/testData/ir/irText/classes/sealedClasses.txt
+++ b/compiler/testData/ir/irText/classes/sealedClasses.txt
@@ -17,7 +17,7 @@ FILE fqName:<root> fileName:/sealedClasses.kt
           DELEGATING_CONSTRUCTOR_CALL 'constructor Expr()'
           INSTANCE_INITIALIZER_CALL classDescriptor='Const'
       PROPERTY name:number type:kotlin.Double visibility:public modality:FINAL flags:val
-        FIELD PROPERTY_BACKING_FIELD name:number type:kotlin.Double visibility:public
+        FIELD PROPERTY_BACKING_FIELD name:number type:kotlin.Double visibility:public flags:final
           EXPRESSION_BODY
             GET_VAR 'value-parameter number: Double' type=kotlin.Double origin=INITIALIZE_PROPERTY_FROM_PARAMETER
         FUN DEFAULT_PROPERTY_ACCESSOR name:<get-number> visibility:public modality:FINAL <> ($this:Expr.Const) returnType:Double flags:
@@ -50,7 +50,7 @@ FILE fqName:<root> fileName:/sealedClasses.kt
           DELEGATING_CONSTRUCTOR_CALL 'constructor Expr()'
           INSTANCE_INITIALIZER_CALL classDescriptor='Sum'
       PROPERTY name:e1 type:Expr visibility:public modality:FINAL flags:val
-        FIELD PROPERTY_BACKING_FIELD name:e1 type:Expr visibility:public
+        FIELD PROPERTY_BACKING_FIELD name:e1 type:Expr visibility:public flags:final
           EXPRESSION_BODY
             GET_VAR 'value-parameter e1: Expr' type=Expr origin=INITIALIZE_PROPERTY_FROM_PARAMETER
         FUN DEFAULT_PROPERTY_ACCESSOR name:<get-e1> visibility:public modality:FINAL <> ($this:Expr.Sum) returnType:Expr flags:
@@ -60,7 +60,7 @@ FILE fqName:<root> fileName:/sealedClasses.kt
               GET_FIELD 'e1: Expr' type=Expr origin=null
                 receiver: GET_VAR 'this@Sum: Sum' type=Expr.Sum origin=null
       PROPERTY name:e2 type:Expr visibility:public modality:FINAL flags:val
-        FIELD PROPERTY_BACKING_FIELD name:e2 type:Expr visibility:public
+        FIELD PROPERTY_BACKING_FIELD name:e2 type:Expr visibility:public flags:final
           EXPRESSION_BODY
             GET_VAR 'value-parameter e2: Expr' type=Expr origin=INITIALIZE_PROPERTY_FROM_PARAMETER
         FUN DEFAULT_PROPERTY_ACCESSOR name:<get-e2> visibility:public modality:FINAL <> ($this:Expr.Sum) returnType:Expr flags:
diff --git a/compiler/testData/ir/irText/classes/secondaryConstructorWithInitializersFromClassBody.txt b/compiler/testData/ir/irText/classes/secondaryConstructorWithInitializersFromClassBody.txt
index 8bbf4205820..e2381223baa 100644
--- a/compiler/testData/ir/irText/classes/secondaryConstructorWithInitializersFromClassBody.txt
+++ b/compiler/testData/ir/irText/classes/secondaryConstructorWithInitializersFromClassBody.txt
@@ -25,7 +25,7 @@ FILE fqName:<root> fileName:/secondaryConstructorWithInitializersFromClassBody.k
     superClasses:
       CLASS CLASS name:Base modality:OPEN visibility:public flags:
     PROPERTY name:x type:kotlin.Int visibility:public modality:FINAL flags:val
-      FIELD PROPERTY_BACKING_FIELD name:x type:kotlin.Int visibility:public
+      FIELD PROPERTY_BACKING_FIELD name:x type:kotlin.Int visibility:public flags:final
         EXPRESSION_BODY
           CONST Int type=kotlin.Int value=0
       FUN DEFAULT_PROPERTY_ACCESSOR name:<get-x> visibility:public modality:FINAL <> ($this:TestProperty) returnType:Int flags:
@@ -56,7 +56,7 @@ FILE fqName:<root> fileName:/secondaryConstructorWithInitializersFromClassBody.k
     superClasses:
       CLASS CLASS name:Base modality:OPEN visibility:public flags:
     PROPERTY name:x type:kotlin.Int visibility:public modality:FINAL flags:val
-      FIELD PROPERTY_BACKING_FIELD name:x type:kotlin.Int visibility:public
+      FIELD PROPERTY_BACKING_FIELD name:x type:kotlin.Int visibility:public flags:final
       FUN DEFAULT_PROPERTY_ACCESSOR name:<get-x> visibility:public modality:FINAL <> ($this:TestInitBlock) returnType:Int flags:
         $this: VALUE_PARAMETER name:<this> type:TestInitBlock flags:
         BLOCK_BODY
diff --git a/compiler/testData/ir/irText/classes/superCalls.txt b/compiler/testData/ir/irText/classes/superCalls.txt
index 2f809916182..58644f49642 100644
--- a/compiler/testData/ir/irText/classes/superCalls.txt
+++ b/compiler/testData/ir/irText/classes/superCalls.txt
@@ -11,7 +11,7 @@ FILE fqName:<root> fileName:/superCalls.kt
       $this: VALUE_PARAMETER name:<this> type:Base flags:
       BLOCK_BODY
     PROPERTY name:bar type:kotlin.String visibility:public modality:OPEN flags:val
-      FIELD PROPERTY_BACKING_FIELD name:bar type:kotlin.String visibility:public
+      FIELD PROPERTY_BACKING_FIELD name:bar type:kotlin.String visibility:public flags:
         EXPRESSION_BODY
           CONST String type=kotlin.String value=
       FUN DEFAULT_PROPERTY_ACCESSOR name:<get-bar> visibility:public modality:OPEN <> ($this:Base) returnType:String flags:
diff --git a/compiler/testData/ir/irText/declarations/annotations/annotationsInAnnotationArguments.txt b/compiler/testData/ir/irText/declarations/annotations/annotationsInAnnotationArguments.txt
index cd6bb6efd87..7eca218893e 100644
--- a/compiler/testData/ir/irText/declarations/annotations/annotationsInAnnotationArguments.txt
+++ b/compiler/testData/ir/irText/declarations/annotations/annotationsInAnnotationArguments.txt
@@ -6,7 +6,7 @@ FILE fqName:<root> fileName:/annotationsInAnnotationArguments.kt
     CONSTRUCTOR visibility:public <> (x:kotlin.Int) returnType:A1 flags:
       VALUE_PARAMETER name:x index:0 type:kotlin.Int flags:
     PROPERTY name:x type:kotlin.Int visibility:public modality:FINAL flags:val
-      FIELD PROPERTY_BACKING_FIELD name:x type:kotlin.Int visibility:public
+      FIELD PROPERTY_BACKING_FIELD name:x type:kotlin.Int visibility:public flags:final
         EXPRESSION_BODY
           GET_VAR 'value-parameter x: Int' type=kotlin.Int origin=INITIALIZE_PROPERTY_FROM_PARAMETER
       FUN DEFAULT_PROPERTY_ACCESSOR name:<get-x> visibility:public modality:FINAL <> ($this:A1) returnType:Int flags:
@@ -35,7 +35,7 @@ FILE fqName:<root> fileName:/annotationsInAnnotationArguments.kt
     CONSTRUCTOR visibility:public <> (a:A1) returnType:A2 flags:
       VALUE_PARAMETER name:a index:0 type:A1 flags:
     PROPERTY name:a type:A1 visibility:public modality:FINAL flags:val
-      FIELD PROPERTY_BACKING_FIELD name:a type:A1 visibility:public
+      FIELD PROPERTY_BACKING_FIELD name:a type:A1 visibility:public flags:final
         EXPRESSION_BODY
           GET_VAR 'value-parameter a: A1' type=A1 origin=INITIALIZE_PROPERTY_FROM_PARAMETER
       FUN DEFAULT_PROPERTY_ACCESSOR name:<get-a> visibility:public modality:FINAL <> ($this:A2) returnType:A1 flags:
@@ -64,7 +64,7 @@ FILE fqName:<root> fileName:/annotationsInAnnotationArguments.kt
     CONSTRUCTOR visibility:public <> (xs:kotlin.Array<A1>) returnType:AA flags:
       VALUE_PARAMETER name:xs index:0 type:kotlin.Array<A1> flags:
     PROPERTY name:xs type:kotlin.Array<A1> visibility:public modality:FINAL flags:val
-      FIELD PROPERTY_BACKING_FIELD name:xs type:kotlin.Array<A1> visibility:public
+      FIELD PROPERTY_BACKING_FIELD name:xs type:kotlin.Array<A1> visibility:public flags:final
         EXPRESSION_BODY
           GET_VAR 'value-parameter xs: Array<A1>' type=kotlin.Array<A1> origin=INITIALIZE_PROPERTY_FROM_PARAMETER
       FUN DEFAULT_PROPERTY_ACCESSOR name:<get-xs> visibility:public modality:FINAL <> ($this:AA) returnType:Array<A1> flags:
diff --git a/compiler/testData/ir/irText/declarations/annotations/annotationsWithDefaultParameterValues.txt b/compiler/testData/ir/irText/declarations/annotations/annotationsWithDefaultParameterValues.txt
index 94d8b374ef9..2a5c2427aa3 100644
--- a/compiler/testData/ir/irText/declarations/annotations/annotationsWithDefaultParameterValues.txt
+++ b/compiler/testData/ir/irText/declarations/annotations/annotationsWithDefaultParameterValues.txt
@@ -11,7 +11,7 @@ FILE fqName:<root> fileName:/annotationsWithDefaultParameterValues.kt
         EXPRESSION_BODY
           CONST Int type=kotlin.Int value=42
     PROPERTY name:x type:kotlin.String visibility:public modality:FINAL flags:val
-      FIELD PROPERTY_BACKING_FIELD name:x type:kotlin.String visibility:public
+      FIELD PROPERTY_BACKING_FIELD name:x type:kotlin.String visibility:public flags:final
         EXPRESSION_BODY
           GET_VAR 'value-parameter x: String = ...' type=kotlin.String origin=INITIALIZE_PROPERTY_FROM_PARAMETER
       FUN DEFAULT_PROPERTY_ACCESSOR name:<get-x> visibility:public modality:FINAL <> ($this:A) returnType:String flags:
@@ -21,7 +21,7 @@ FILE fqName:<root> fileName:/annotationsWithDefaultParameterValues.kt
             GET_FIELD 'x: String' type=kotlin.String origin=null
               receiver: GET_VAR 'this@A: A' type=A origin=null
     PROPERTY name:y type:kotlin.Int visibility:public modality:FINAL flags:val
-      FIELD PROPERTY_BACKING_FIELD name:y type:kotlin.Int visibility:public
+      FIELD PROPERTY_BACKING_FIELD name:y type:kotlin.Int visibility:public flags:final
         EXPRESSION_BODY
           GET_VAR 'value-parameter y: Int = ...' type=kotlin.Int origin=INITIALIZE_PROPERTY_FROM_PARAMETER
       FUN DEFAULT_PROPERTY_ACCESSOR name:<get-y> visibility:public modality:FINAL <> ($this:A) returnType:Int flags:
diff --git a/compiler/testData/ir/irText/declarations/annotations/annotationsWithVarargParameters.txt b/compiler/testData/ir/irText/declarations/annotations/annotationsWithVarargParameters.txt
index 781d685b6ce..99ad11ff9a6 100644
--- a/compiler/testData/ir/irText/declarations/annotations/annotationsWithVarargParameters.txt
+++ b/compiler/testData/ir/irText/declarations/annotations/annotationsWithVarargParameters.txt
@@ -6,7 +6,7 @@ FILE fqName:<root> fileName:/annotationsWithVarargParameters.kt
     CONSTRUCTOR visibility:public <> (xs:kotlin.Array<out kotlin.String>) returnType:A flags:
       VALUE_PARAMETER name:xs index:0 type:kotlin.Array<out kotlin.String> varargElementType:kotlin.String flags:vararg
     PROPERTY name:xs type:kotlin.Array<out kotlin.String> visibility:public modality:FINAL flags:val
-      FIELD PROPERTY_BACKING_FIELD name:xs type:kotlin.Array<out kotlin.String> visibility:public
+      FIELD PROPERTY_BACKING_FIELD name:xs type:kotlin.Array<out kotlin.String> visibility:public flags:final
         EXPRESSION_BODY
           GET_VAR 'value-parameter vararg xs: String' type=kotlin.Array<out kotlin.String> origin=INITIALIZE_PROPERTY_FROM_PARAMETER
       FUN DEFAULT_PROPERTY_ACCESSOR name:<get-xs> visibility:public modality:FINAL <> ($this:A) returnType:Array<out String> flags:
diff --git a/compiler/testData/ir/irText/declarations/annotations/arrayInAnnotationArguments.txt b/compiler/testData/ir/irText/declarations/annotations/arrayInAnnotationArguments.txt
index 46f919bf6aa..7d2b0241ad4 100644
--- a/compiler/testData/ir/irText/declarations/annotations/arrayInAnnotationArguments.txt
+++ b/compiler/testData/ir/irText/declarations/annotations/arrayInAnnotationArguments.txt
@@ -6,7 +6,7 @@ FILE fqName:<root> fileName:/arrayInAnnotationArguments.kt
     CONSTRUCTOR visibility:public <> (x:kotlin.IntArray) returnType:TestAnnWithIntArray flags:
       VALUE_PARAMETER name:x index:0 type:kotlin.IntArray flags:
     PROPERTY name:x type:kotlin.IntArray visibility:public modality:FINAL flags:val
-      FIELD PROPERTY_BACKING_FIELD name:x type:kotlin.IntArray visibility:public
+      FIELD PROPERTY_BACKING_FIELD name:x type:kotlin.IntArray visibility:public flags:final
         EXPRESSION_BODY
           GET_VAR 'value-parameter x: IntArray' type=kotlin.IntArray origin=INITIALIZE_PROPERTY_FROM_PARAMETER
       FUN DEFAULT_PROPERTY_ACCESSOR name:<get-x> visibility:public modality:FINAL <> ($this:TestAnnWithIntArray) returnType:IntArray flags:
@@ -35,7 +35,7 @@ FILE fqName:<root> fileName:/arrayInAnnotationArguments.kt
     CONSTRUCTOR visibility:public <> (x:kotlin.Array<kotlin.String>) returnType:TestAnnWithStringArray flags:
       VALUE_PARAMETER name:x index:0 type:kotlin.Array<kotlin.String> flags:
     PROPERTY name:x type:kotlin.Array<kotlin.String> visibility:public modality:FINAL flags:val
-      FIELD PROPERTY_BACKING_FIELD name:x type:kotlin.Array<kotlin.String> visibility:public
+      FIELD PROPERTY_BACKING_FIELD name:x type:kotlin.Array<kotlin.String> visibility:public flags:final
         EXPRESSION_BODY
           GET_VAR 'value-parameter x: Array<String>' type=kotlin.Array<kotlin.String> origin=INITIALIZE_PROPERTY_FROM_PARAMETER
       FUN DEFAULT_PROPERTY_ACCESSOR name:<get-x> visibility:public modality:FINAL <> ($this:TestAnnWithStringArray) returnType:Array<String> flags:
diff --git a/compiler/testData/ir/irText/declarations/annotations/classesWithAnnotations.txt b/compiler/testData/ir/irText/declarations/annotations/classesWithAnnotations.txt
index f5e76747c81..a757a9e88a7 100644
--- a/compiler/testData/ir/irText/declarations/annotations/classesWithAnnotations.txt
+++ b/compiler/testData/ir/irText/declarations/annotations/classesWithAnnotations.txt
@@ -6,7 +6,7 @@ FILE fqName:<root> fileName:/classesWithAnnotations.kt
     CONSTRUCTOR visibility:public <> (x:kotlin.String) returnType:TestAnn flags:
       VALUE_PARAMETER name:x index:0 type:kotlin.String flags:
     PROPERTY name:x type:kotlin.String visibility:public modality:FINAL flags:val
-      FIELD PROPERTY_BACKING_FIELD name:x type:kotlin.String visibility:public
+      FIELD PROPERTY_BACKING_FIELD name:x type:kotlin.String visibility:public flags:final
         EXPRESSION_BODY
           GET_VAR 'value-parameter x: String' type=kotlin.String origin=INITIALIZE_PROPERTY_FROM_PARAMETER
       FUN DEFAULT_PROPERTY_ACCESSOR name:<get-x> visibility:public modality:FINAL <> ($this:TestAnn) returnType:String flags:
diff --git a/compiler/testData/ir/irText/declarations/annotations/constExpressionsInAnnotationArguments.txt b/compiler/testData/ir/irText/declarations/annotations/constExpressionsInAnnotationArguments.txt
index 20650f04a4e..62669b79cec 100644
--- a/compiler/testData/ir/irText/declarations/annotations/constExpressionsInAnnotationArguments.txt
+++ b/compiler/testData/ir/irText/declarations/annotations/constExpressionsInAnnotationArguments.txt
@@ -1,6 +1,6 @@
 FILE fqName:<root> fileName:/constExpressionsInAnnotationArguments.kt
   PROPERTY name:ONE type:kotlin.Int visibility:public modality:FINAL flags:constmval
-    FIELD PROPERTY_BACKING_FIELD name:ONE type:kotlin.Int visibility:public
+    FIELD PROPERTY_BACKING_FIELD name:ONE type:kotlin.Int visibility:public flags:final
       EXPRESSION_BODY
         CONST Int type=kotlin.Int value=1
     FUN DEFAULT_PROPERTY_ACCESSOR name:<get-ONE> visibility:public modality:FINAL <> () returnType:Int flags:
@@ -14,7 +14,7 @@ FILE fqName:<root> fileName:/constExpressionsInAnnotationArguments.kt
     CONSTRUCTOR visibility:public <> (x:kotlin.Int) returnType:A flags:
       VALUE_PARAMETER name:x index:0 type:kotlin.Int flags:
     PROPERTY name:x type:kotlin.Int visibility:public modality:FINAL flags:val
-      FIELD PROPERTY_BACKING_FIELD name:x type:kotlin.Int visibility:public
+      FIELD PROPERTY_BACKING_FIELD name:x type:kotlin.Int visibility:public flags:final
         EXPRESSION_BODY
           GET_VAR 'value-parameter x: Int' type=kotlin.Int origin=INITIALIZE_PROPERTY_FROM_PARAMETER
       FUN DEFAULT_PROPERTY_ACCESSOR name:<get-x> visibility:public modality:FINAL <> ($this:A) returnType:Int flags:
diff --git a/compiler/testData/ir/irText/declarations/annotations/constructorsWithAnnotations.txt b/compiler/testData/ir/irText/declarations/annotations/constructorsWithAnnotations.txt
index 94f22b89f8b..a49147e602f 100644
--- a/compiler/testData/ir/irText/declarations/annotations/constructorsWithAnnotations.txt
+++ b/compiler/testData/ir/irText/declarations/annotations/constructorsWithAnnotations.txt
@@ -6,7 +6,7 @@ FILE fqName:<root> fileName:/constructorsWithAnnotations.kt
     CONSTRUCTOR visibility:public <> (x:kotlin.Int) returnType:TestAnn flags:
       VALUE_PARAMETER name:x index:0 type:kotlin.Int flags:
     PROPERTY name:x type:kotlin.Int visibility:public modality:FINAL flags:val
-      FIELD PROPERTY_BACKING_FIELD name:x type:kotlin.Int visibility:public
+      FIELD PROPERTY_BACKING_FIELD name:x type:kotlin.Int visibility:public flags:final
         EXPRESSION_BODY
           GET_VAR 'value-parameter x: Int' type=kotlin.Int origin=INITIALIZE_PROPERTY_FROM_PARAMETER
       FUN DEFAULT_PROPERTY_ACCESSOR name:<get-x> visibility:public modality:FINAL <> ($this:TestAnn) returnType:Int flags:
diff --git a/compiler/testData/ir/irText/declarations/annotations/delegateFieldWithAnnotations.txt b/compiler/testData/ir/irText/declarations/annotations/delegateFieldWithAnnotations.txt
index 3bb511c2cbb..04e271d4868 100644
--- a/compiler/testData/ir/irText/declarations/annotations/delegateFieldWithAnnotations.txt
+++ b/compiler/testData/ir/irText/declarations/annotations/delegateFieldWithAnnotations.txt
@@ -18,7 +18,7 @@ FILE fqName:<root> fileName:/delegateFieldWithAnnotations.kt
         FUN FAKE_OVERRIDE name:toString visibility:public modality:OPEN <> ($this:kotlin.Any) returnType:String flags:
       $this: VALUE_PARAMETER name:<this> type:kotlin.Any flags:
   PROPERTY name:test1 type:kotlin.Int visibility:public modality:FINAL flags:delegatedmval
-    FIELD DELEGATE name:test1$delegate type:kotlin.Lazy<kotlin.Int> visibility:private
+    FIELD DELEGATE name:test1$delegate type:kotlin.Lazy<kotlin.Int> visibility:private flags:final
       annotations:
         CALL 'constructor Ann()' type=Ann origin=null
       EXPRESSION_BODY
diff --git a/compiler/testData/ir/irText/declarations/annotations/delegatedPropertyAccessorsWithAnnotations.txt b/compiler/testData/ir/irText/declarations/annotations/delegatedPropertyAccessorsWithAnnotations.txt
index 18e819a9e37..20a7cf8555c 100644
--- a/compiler/testData/ir/irText/declarations/annotations/delegatedPropertyAccessorsWithAnnotations.txt
+++ b/compiler/testData/ir/irText/declarations/annotations/delegatedPropertyAccessorsWithAnnotations.txt
@@ -6,7 +6,7 @@ FILE fqName:<root> fileName:/delegatedPropertyAccessorsWithAnnotations.kt
     CONSTRUCTOR visibility:public <> (x:kotlin.String) returnType:A flags:
       VALUE_PARAMETER name:x index:0 type:kotlin.String flags:
     PROPERTY name:x type:kotlin.String visibility:public modality:FINAL flags:val
-      FIELD PROPERTY_BACKING_FIELD name:x type:kotlin.String visibility:public
+      FIELD PROPERTY_BACKING_FIELD name:x type:kotlin.String visibility:public flags:final
         EXPRESSION_BODY
           GET_VAR 'value-parameter x: String' type=kotlin.String origin=INITIALIZE_PROPERTY_FROM_PARAMETER
       FUN DEFAULT_PROPERTY_ACCESSOR name:<get-x> visibility:public modality:FINAL <> ($this:A) returnType:String flags:
@@ -38,7 +38,7 @@ FILE fqName:<root> fileName:/delegatedPropertyAccessorsWithAnnotations.kt
         DELEGATING_CONSTRUCTOR_CALL 'constructor Any()'
         INSTANCE_INITIALIZER_CALL classDescriptor='Cell'
     PROPERTY name:value type:kotlin.Int visibility:public modality:FINAL flags:var
-      FIELD PROPERTY_BACKING_FIELD name:value type:kotlin.Int visibility:public
+      FIELD PROPERTY_BACKING_FIELD name:value type:kotlin.Int visibility:public flags:final
         EXPRESSION_BODY
           GET_VAR 'value-parameter value: Int' type=kotlin.Int origin=INITIALIZE_PROPERTY_FROM_PARAMETER
       FUN DEFAULT_PROPERTY_ACCESSOR name:<get-value> visibility:public modality:FINAL <> ($this:Cell) returnType:Int flags:
@@ -85,7 +85,7 @@ FILE fqName:<root> fileName:/delegatedPropertyAccessorsWithAnnotations.kt
         FUN IR_EXTERNAL_DECLARATION_STUB name:toString visibility:public modality:OPEN <> ($this:kotlin.Any) returnType:String flags:
       $this: VALUE_PARAMETER name:<this> type:kotlin.Any flags:
   PROPERTY name:test1 type:kotlin.Int visibility:public modality:FINAL flags:delegatedmval
-    FIELD DELEGATE name:test1$delegate type:Cell visibility:private
+    FIELD DELEGATE name:test1$delegate type:Cell visibility:private flags:final
       EXPRESSION_BODY
         CALL 'constructor Cell(Int)' type=Cell origin=null
           value: CONST Int type=kotlin.Int value=1
@@ -100,7 +100,7 @@ FILE fqName:<root> fileName:/delegatedPropertyAccessorsWithAnnotations.kt
             thisRef: CONST Null type=kotlin.Nothing? value=null
             kProp: PROPERTY_REFERENCE 'test1: Int' field=null getter='<get-test1>(): Int' setter=null type=kotlin.reflect.KProperty0<kotlin.Int> origin=PROPERTY_REFERENCE_FOR_DELEGATE
   PROPERTY name:test2 type:kotlin.Int visibility:public modality:FINAL flags:delegatedmvar
-    FIELD DELEGATE name:test2$delegate type:Cell visibility:private
+    FIELD DELEGATE name:test2$delegate type:Cell visibility:private flags:final
       EXPRESSION_BODY
         CALL 'constructor Cell(Int)' type=Cell origin=null
           value: CONST Int type=kotlin.Int value=2
diff --git a/compiler/testData/ir/irText/declarations/annotations/enumEntriesWithAnnotations.txt b/compiler/testData/ir/irText/declarations/annotations/enumEntriesWithAnnotations.txt
index b4ddce640d0..d47a45c084b 100644
--- a/compiler/testData/ir/irText/declarations/annotations/enumEntriesWithAnnotations.txt
+++ b/compiler/testData/ir/irText/declarations/annotations/enumEntriesWithAnnotations.txt
@@ -6,7 +6,7 @@ FILE fqName:<root> fileName:/enumEntriesWithAnnotations.kt
     CONSTRUCTOR visibility:public <> (x:kotlin.String) returnType:TestAnn flags:
       VALUE_PARAMETER name:x index:0 type:kotlin.String flags:
     PROPERTY name:x type:kotlin.String visibility:public modality:FINAL flags:val
-      FIELD PROPERTY_BACKING_FIELD name:x type:kotlin.String visibility:public
+      FIELD PROPERTY_BACKING_FIELD name:x type:kotlin.String visibility:public flags:final
         EXPRESSION_BODY
           GET_VAR 'value-parameter x: String' type=kotlin.String origin=INITIALIZE_PROPERTY_FROM_PARAMETER
       FUN DEFAULT_PROPERTY_ACCESSOR name:<get-x> visibility:public modality:FINAL <> ($this:TestAnn) returnType:String flags:
@@ -59,7 +59,7 @@ FILE fqName:<root> fileName:/enumEntriesWithAnnotations.kt
             ENUM_CONSTRUCTOR_CALL 'constructor TestEnum()'
             INSTANCE_INITIALIZER_CALL classDescriptor='ENTRY2'
         PROPERTY name:x type:kotlin.Int visibility:public modality:FINAL flags:val
-          FIELD PROPERTY_BACKING_FIELD name:x type:kotlin.Int visibility:public
+          FIELD PROPERTY_BACKING_FIELD name:x type:kotlin.Int visibility:public flags:final
             EXPRESSION_BODY
               CONST Int type=kotlin.Int value=42
           FUN DEFAULT_PROPERTY_ACCESSOR name:<get-x> visibility:public modality:FINAL <> ($this:TestEnum.ENTRY2) returnType:Int flags:
diff --git a/compiler/testData/ir/irText/declarations/annotations/enumsInAnnotationArguments.txt b/compiler/testData/ir/irText/declarations/annotations/enumsInAnnotationArguments.txt
index 11b7340913c..31b977cd3a1 100644
--- a/compiler/testData/ir/irText/declarations/annotations/enumsInAnnotationArguments.txt
+++ b/compiler/testData/ir/irText/declarations/annotations/enumsInAnnotationArguments.txt
@@ -68,7 +68,7 @@ FILE fqName:<root> fileName:/enumsInAnnotationArguments.kt
     CONSTRUCTOR visibility:public <> (x:En) returnType:TestAnn flags:
       VALUE_PARAMETER name:x index:0 type:En flags:
     PROPERTY name:x type:En visibility:public modality:FINAL flags:val
-      FIELD PROPERTY_BACKING_FIELD name:x type:En visibility:public
+      FIELD PROPERTY_BACKING_FIELD name:x type:En visibility:public flags:final
         EXPRESSION_BODY
           GET_VAR 'value-parameter x: En' type=En origin=INITIALIZE_PROPERTY_FROM_PARAMETER
       FUN DEFAULT_PROPERTY_ACCESSOR name:<get-x> visibility:public modality:FINAL <> ($this:TestAnn) returnType:En flags:
diff --git a/compiler/testData/ir/irText/declarations/annotations/fieldsWithAnnotations.txt b/compiler/testData/ir/irText/declarations/annotations/fieldsWithAnnotations.txt
index e2be6eee477..1fee148ec1d 100644
--- a/compiler/testData/ir/irText/declarations/annotations/fieldsWithAnnotations.txt
+++ b/compiler/testData/ir/irText/declarations/annotations/fieldsWithAnnotations.txt
@@ -6,7 +6,7 @@ FILE fqName:<root> fileName:/fieldsWithAnnotations.kt
     CONSTRUCTOR visibility:public <> (x:kotlin.String) returnType:TestAnn flags:
       VALUE_PARAMETER name:x index:0 type:kotlin.String flags:
     PROPERTY name:x type:kotlin.String visibility:public modality:FINAL flags:val
-      FIELD PROPERTY_BACKING_FIELD name:x type:kotlin.String visibility:public
+      FIELD PROPERTY_BACKING_FIELD name:x type:kotlin.String visibility:public flags:final
         EXPRESSION_BODY
           GET_VAR 'value-parameter x: String' type=kotlin.String origin=INITIALIZE_PROPERTY_FROM_PARAMETER
       FUN DEFAULT_PROPERTY_ACCESSOR name:<get-x> visibility:public modality:FINAL <> ($this:TestAnn) returnType:String flags:
@@ -29,7 +29,7 @@ FILE fqName:<root> fileName:/fieldsWithAnnotations.kt
         FUN FAKE_OVERRIDE name:toString visibility:public modality:OPEN <> ($this:kotlin.Any) returnType:String flags:
       $this: VALUE_PARAMETER name:<this> type:kotlin.Any flags:
   PROPERTY name:testVal type:kotlin.String visibility:public modality:FINAL flags:val
-    FIELD PROPERTY_BACKING_FIELD name:testVal type:kotlin.String visibility:public
+    FIELD PROPERTY_BACKING_FIELD name:testVal type:kotlin.String visibility:public flags:final
       annotations:
         CALL 'constructor TestAnn(String)' type=TestAnn origin=null
           x: CONST String type=kotlin.String value=testVal.field
@@ -40,7 +40,7 @@ FILE fqName:<root> fileName:/fieldsWithAnnotations.kt
         RETURN type=kotlin.Nothing from='<get-testVal>(): String'
           GET_FIELD 'testVal: String' type=kotlin.String origin=null
   PROPERTY name:testVar type:kotlin.String visibility:public modality:FINAL flags:var
-    FIELD PROPERTY_BACKING_FIELD name:testVar type:kotlin.String visibility:public
+    FIELD PROPERTY_BACKING_FIELD name:testVar type:kotlin.String visibility:public flags:final
       annotations:
         CALL 'constructor TestAnn(String)' type=TestAnn origin=null
           x: CONST String type=kotlin.String value=testVar.field
diff --git a/compiler/testData/ir/irText/declarations/annotations/fileAnnotations.txt b/compiler/testData/ir/irText/declarations/annotations/fileAnnotations.txt
index 29f661b2fee..cb0e8988014 100644
--- a/compiler/testData/ir/irText/declarations/annotations/fileAnnotations.txt
+++ b/compiler/testData/ir/irText/declarations/annotations/fileAnnotations.txt
@@ -15,7 +15,7 @@ FILE fqName:test fileName:/fileAnnotations.kt
     CONSTRUCTOR visibility:public <> (x:kotlin.String) returnType:test.A flags:
       VALUE_PARAMETER name:x index:0 type:kotlin.String flags:
     PROPERTY name:x type:kotlin.String visibility:public modality:FINAL flags:val
-      FIELD PROPERTY_BACKING_FIELD name:x type:kotlin.String visibility:public
+      FIELD PROPERTY_BACKING_FIELD name:x type:kotlin.String visibility:public flags:final
         EXPRESSION_BODY
           GET_VAR 'value-parameter x: String' type=kotlin.String origin=INITIALIZE_PROPERTY_FROM_PARAMETER
       FUN DEFAULT_PROPERTY_ACCESSOR name:<get-x> visibility:public modality:FINAL <> ($this:test.A) returnType:String flags:
diff --git a/compiler/testData/ir/irText/declarations/annotations/functionsWithAnnotations.txt b/compiler/testData/ir/irText/declarations/annotations/functionsWithAnnotations.txt
index acd69f168c0..1ee8f82729d 100644
--- a/compiler/testData/ir/irText/declarations/annotations/functionsWithAnnotations.txt
+++ b/compiler/testData/ir/irText/declarations/annotations/functionsWithAnnotations.txt
@@ -6,7 +6,7 @@ FILE fqName:<root> fileName:/functionsWithAnnotations.kt
     CONSTRUCTOR visibility:public <> (x:kotlin.Int) returnType:TestAnn flags:
       VALUE_PARAMETER name:x index:0 type:kotlin.Int flags:
     PROPERTY name:x type:kotlin.Int visibility:public modality:FINAL flags:val
-      FIELD PROPERTY_BACKING_FIELD name:x type:kotlin.Int visibility:public
+      FIELD PROPERTY_BACKING_FIELD name:x type:kotlin.Int visibility:public flags:final
         EXPRESSION_BODY
           GET_VAR 'value-parameter x: Int' type=kotlin.Int origin=INITIALIZE_PROPERTY_FROM_PARAMETER
       FUN DEFAULT_PROPERTY_ACCESSOR name:<get-x> visibility:public modality:FINAL <> ($this:TestAnn) returnType:Int flags:
diff --git a/compiler/testData/ir/irText/declarations/annotations/localDelegatedPropertiesWithAnnotations.txt b/compiler/testData/ir/irText/declarations/annotations/localDelegatedPropertiesWithAnnotations.txt
index 5fd8b6d2e9e..3c0db881847 100644
--- a/compiler/testData/ir/irText/declarations/annotations/localDelegatedPropertiesWithAnnotations.txt
+++ b/compiler/testData/ir/irText/declarations/annotations/localDelegatedPropertiesWithAnnotations.txt
@@ -6,7 +6,7 @@ FILE fqName:<root> fileName:/localDelegatedPropertiesWithAnnotations.kt
     CONSTRUCTOR visibility:public <> (x:kotlin.String) returnType:A flags:
       VALUE_PARAMETER name:x index:0 type:kotlin.String flags:
     PROPERTY name:x type:kotlin.String visibility:public modality:FINAL flags:val
-      FIELD PROPERTY_BACKING_FIELD name:x type:kotlin.String visibility:public
+      FIELD PROPERTY_BACKING_FIELD name:x type:kotlin.String visibility:public flags:final
         EXPRESSION_BODY
           GET_VAR 'value-parameter x: String' type=kotlin.String origin=INITIALIZE_PROPERTY_FROM_PARAMETER
       FUN DEFAULT_PROPERTY_ACCESSOR name:<get-x> visibility:public modality:FINAL <> ($this:A) returnType:String flags:
diff --git a/compiler/testData/ir/irText/declarations/annotations/primaryConstructorParameterWithAnnotations.txt b/compiler/testData/ir/irText/declarations/annotations/primaryConstructorParameterWithAnnotations.txt
index f0c559a95a3..b8246552ee6 100644
--- a/compiler/testData/ir/irText/declarations/annotations/primaryConstructorParameterWithAnnotations.txt
+++ b/compiler/testData/ir/irText/declarations/annotations/primaryConstructorParameterWithAnnotations.txt
@@ -29,7 +29,7 @@ FILE fqName:<root> fileName:/primaryConstructorParameterWithAnnotations.kt
         DELEGATING_CONSTRUCTOR_CALL 'constructor Any()'
         INSTANCE_INITIALIZER_CALL classDescriptor='Test'
     PROPERTY name:x type:kotlin.Int visibility:public modality:FINAL flags:val
-      FIELD PROPERTY_BACKING_FIELD name:x type:kotlin.Int visibility:public
+      FIELD PROPERTY_BACKING_FIELD name:x type:kotlin.Int visibility:public flags:final
         EXPRESSION_BODY
           GET_VAR 'value-parameter x: Int' type=kotlin.Int origin=INITIALIZE_PROPERTY_FROM_PARAMETER
       FUN DEFAULT_PROPERTY_ACCESSOR name:<get-x> visibility:public modality:FINAL <> ($this:Test) returnType:Int flags:
diff --git a/compiler/testData/ir/irText/declarations/annotations/propertiesWithAnnotations.txt b/compiler/testData/ir/irText/declarations/annotations/propertiesWithAnnotations.txt
index 6aedf52172e..535ce29ec86 100644
--- a/compiler/testData/ir/irText/declarations/annotations/propertiesWithAnnotations.txt
+++ b/compiler/testData/ir/irText/declarations/annotations/propertiesWithAnnotations.txt
@@ -6,7 +6,7 @@ FILE fqName:<root> fileName:/propertiesWithAnnotations.kt
     CONSTRUCTOR visibility:public <> (x:kotlin.String) returnType:TestAnn flags:
       VALUE_PARAMETER name:x index:0 type:kotlin.String flags:
     PROPERTY name:x type:kotlin.String visibility:public modality:FINAL flags:val
-      FIELD PROPERTY_BACKING_FIELD name:x type:kotlin.String visibility:public
+      FIELD PROPERTY_BACKING_FIELD name:x type:kotlin.String visibility:public flags:final
         EXPRESSION_BODY
           GET_VAR 'value-parameter x: String' type=kotlin.String origin=INITIALIZE_PROPERTY_FROM_PARAMETER
       FUN DEFAULT_PROPERTY_ACCESSOR name:<get-x> visibility:public modality:FINAL <> ($this:TestAnn) returnType:String flags:
@@ -32,7 +32,7 @@ FILE fqName:<root> fileName:/propertiesWithAnnotations.kt
     annotations:
       CALL 'constructor TestAnn(String)' type=TestAnn origin=null
         x: CONST String type=kotlin.String value=testVal.property
-    FIELD PROPERTY_BACKING_FIELD name:testVal type:kotlin.String visibility:public
+    FIELD PROPERTY_BACKING_FIELD name:testVal type:kotlin.String visibility:public flags:final
       EXPRESSION_BODY
         CONST String type=kotlin.String value=
     FUN DEFAULT_PROPERTY_ACCESSOR name:<get-testVal> visibility:public modality:FINAL <> () returnType:String flags:
diff --git a/compiler/testData/ir/irText/declarations/annotations/propertyAccessorsFromClassHeaderWithAnnotations.txt b/compiler/testData/ir/irText/declarations/annotations/propertyAccessorsFromClassHeaderWithAnnotations.txt
index 57646edecf7..ff03d682551 100644
--- a/compiler/testData/ir/irText/declarations/annotations/propertyAccessorsFromClassHeaderWithAnnotations.txt
+++ b/compiler/testData/ir/irText/declarations/annotations/propertyAccessorsFromClassHeaderWithAnnotations.txt
@@ -6,7 +6,7 @@ FILE fqName:<root> fileName:/propertyAccessorsFromClassHeaderWithAnnotations.kt
     CONSTRUCTOR visibility:public <> (x:kotlin.String) returnType:A flags:
       VALUE_PARAMETER name:x index:0 type:kotlin.String flags:
     PROPERTY name:x type:kotlin.String visibility:public modality:FINAL flags:val
-      FIELD PROPERTY_BACKING_FIELD name:x type:kotlin.String visibility:public
+      FIELD PROPERTY_BACKING_FIELD name:x type:kotlin.String visibility:public flags:final
         EXPRESSION_BODY
           GET_VAR 'value-parameter x: String' type=kotlin.String origin=INITIALIZE_PROPERTY_FROM_PARAMETER
       FUN DEFAULT_PROPERTY_ACCESSOR name:<get-x> visibility:public modality:FINAL <> ($this:A) returnType:String flags:
@@ -39,7 +39,7 @@ FILE fqName:<root> fileName:/propertyAccessorsFromClassHeaderWithAnnotations.kt
         DELEGATING_CONSTRUCTOR_CALL 'constructor Any()'
         INSTANCE_INITIALIZER_CALL classDescriptor='C'
     PROPERTY name:x type:kotlin.Int visibility:public modality:FINAL flags:val
-      FIELD PROPERTY_BACKING_FIELD name:x type:kotlin.Int visibility:public
+      FIELD PROPERTY_BACKING_FIELD name:x type:kotlin.Int visibility:public flags:final
         EXPRESSION_BODY
           GET_VAR 'value-parameter x: Int' type=kotlin.Int origin=INITIALIZE_PROPERTY_FROM_PARAMETER
       FUN DEFAULT_PROPERTY_ACCESSOR name:<get-x> visibility:public modality:FINAL <> ($this:C) returnType:Int flags:
@@ -52,7 +52,7 @@ FILE fqName:<root> fileName:/propertyAccessorsFromClassHeaderWithAnnotations.kt
             GET_FIELD 'x: Int' type=kotlin.Int origin=null
               receiver: GET_VAR 'this@C: C' type=C origin=null
     PROPERTY name:y type:kotlin.Int visibility:public modality:FINAL flags:var
-      FIELD PROPERTY_BACKING_FIELD name:y type:kotlin.Int visibility:public
+      FIELD PROPERTY_BACKING_FIELD name:y type:kotlin.Int visibility:public flags:final
         EXPRESSION_BODY
           GET_VAR 'value-parameter y: Int' type=kotlin.Int origin=INITIALIZE_PROPERTY_FROM_PARAMETER
       FUN DEFAULT_PROPERTY_ACCESSOR name:<get-y> visibility:public modality:FINAL <> ($this:C) returnType:Int flags:
diff --git a/compiler/testData/ir/irText/declarations/annotations/propertyAccessorsWithAnnotations.txt b/compiler/testData/ir/irText/declarations/annotations/propertyAccessorsWithAnnotations.txt
index ddc52db19d3..e7c0c0513f5 100644
--- a/compiler/testData/ir/irText/declarations/annotations/propertyAccessorsWithAnnotations.txt
+++ b/compiler/testData/ir/irText/declarations/annotations/propertyAccessorsWithAnnotations.txt
@@ -6,7 +6,7 @@ FILE fqName:<root> fileName:/propertyAccessorsWithAnnotations.kt
     CONSTRUCTOR visibility:public <> (x:kotlin.String) returnType:TestAnn flags:
       VALUE_PARAMETER name:x index:0 type:kotlin.String flags:
     PROPERTY name:x type:kotlin.String visibility:public modality:FINAL flags:val
-      FIELD PROPERTY_BACKING_FIELD name:x type:kotlin.String visibility:public
+      FIELD PROPERTY_BACKING_FIELD name:x type:kotlin.String visibility:public flags:final
         EXPRESSION_BODY
           GET_VAR 'value-parameter x: String' type=kotlin.String origin=INITIALIZE_PROPERTY_FROM_PARAMETER
       FUN DEFAULT_PROPERTY_ACCESSOR name:<get-x> visibility:public modality:FINAL <> ($this:TestAnn) returnType:String flags:
@@ -51,7 +51,7 @@ FILE fqName:<root> fileName:/propertyAccessorsWithAnnotations.kt
       VALUE_PARAMETER name:value index:0 type:kotlin.String flags:
       BLOCK_BODY
   PROPERTY name:test3 type:kotlin.String visibility:public modality:FINAL flags:val
-    FIELD PROPERTY_BACKING_FIELD name:test3 type:kotlin.String visibility:public
+    FIELD PROPERTY_BACKING_FIELD name:test3 type:kotlin.String visibility:public flags:final
       EXPRESSION_BODY
         CONST String type=kotlin.String value=
     FUN DEFAULT_PROPERTY_ACCESSOR name:<get-test3> visibility:public modality:FINAL <> () returnType:String flags:
@@ -62,7 +62,7 @@ FILE fqName:<root> fileName:/propertyAccessorsWithAnnotations.kt
         RETURN type=kotlin.Nothing from='<get-test3>(): String'
           GET_FIELD 'test3: String' type=kotlin.String origin=null
   PROPERTY name:test4 type:kotlin.String visibility:public modality:FINAL flags:var
-    FIELD PROPERTY_BACKING_FIELD name:test4 type:kotlin.String visibility:public
+    FIELD PROPERTY_BACKING_FIELD name:test4 type:kotlin.String visibility:public flags:final
       EXPRESSION_BODY
         CONST String type=kotlin.String value=
     FUN DEFAULT_PROPERTY_ACCESSOR name:<get-test4> visibility:public modality:FINAL <> () returnType:String flags:
diff --git a/compiler/testData/ir/irText/declarations/annotations/propertySetterParameterWithAnnotations.txt b/compiler/testData/ir/irText/declarations/annotations/propertySetterParameterWithAnnotations.txt
index 88bad1fcda1..d2d2f5c8cb4 100644
--- a/compiler/testData/ir/irText/declarations/annotations/propertySetterParameterWithAnnotations.txt
+++ b/compiler/testData/ir/irText/declarations/annotations/propertySetterParameterWithAnnotations.txt
@@ -18,7 +18,7 @@ FILE fqName:<root> fileName:/propertySetterParameterWithAnnotations.kt
         FUN FAKE_OVERRIDE name:toString visibility:public modality:OPEN <> ($this:kotlin.Any) returnType:String flags:
       $this: VALUE_PARAMETER name:<this> type:kotlin.Any flags:
   PROPERTY name:p type:kotlin.Int visibility:public modality:FINAL flags:var
-    FIELD PROPERTY_BACKING_FIELD name:p type:kotlin.Int visibility:public
+    FIELD PROPERTY_BACKING_FIELD name:p type:kotlin.Int visibility:public flags:final
       EXPRESSION_BODY
         CONST Int type=kotlin.Int value=0
     FUN DEFAULT_PROPERTY_ACCESSOR name:<get-p> visibility:public modality:FINAL <> () returnType:Int flags:
@@ -42,7 +42,7 @@ FILE fqName:<root> fileName:/propertySetterParameterWithAnnotations.kt
         DELEGATING_CONSTRUCTOR_CALL 'constructor Any()'
         INSTANCE_INITIALIZER_CALL classDescriptor='C'
     PROPERTY name:p type:kotlin.Int visibility:public modality:FINAL flags:var
-      FIELD PROPERTY_BACKING_FIELD name:p type:kotlin.Int visibility:public
+      FIELD PROPERTY_BACKING_FIELD name:p type:kotlin.Int visibility:public flags:final
         EXPRESSION_BODY
           GET_VAR 'value-parameter p: Int' type=kotlin.Int origin=INITIALIZE_PROPERTY_FROM_PARAMETER
       FUN DEFAULT_PROPERTY_ACCESSOR name:<get-p> visibility:public modality:FINAL <> ($this:C) returnType:Int flags:
diff --git a/compiler/testData/ir/irText/declarations/annotations/spreadOperatorInAnnotationArguments.txt b/compiler/testData/ir/irText/declarations/annotations/spreadOperatorInAnnotationArguments.txt
index c7aab3f8220..b3ee7afe2f5 100644
--- a/compiler/testData/ir/irText/declarations/annotations/spreadOperatorInAnnotationArguments.txt
+++ b/compiler/testData/ir/irText/declarations/annotations/spreadOperatorInAnnotationArguments.txt
@@ -6,7 +6,7 @@ FILE fqName:<root> fileName:/spreadOperatorInAnnotationArguments.kt
     CONSTRUCTOR visibility:public <> (xs:kotlin.Array<out kotlin.String>) returnType:A flags:
       VALUE_PARAMETER name:xs index:0 type:kotlin.Array<out kotlin.String> varargElementType:kotlin.String flags:vararg
     PROPERTY name:xs type:kotlin.Array<out kotlin.String> visibility:public modality:FINAL flags:val
-      FIELD PROPERTY_BACKING_FIELD name:xs type:kotlin.Array<out kotlin.String> visibility:public
+      FIELD PROPERTY_BACKING_FIELD name:xs type:kotlin.Array<out kotlin.String> visibility:public flags:final
         EXPRESSION_BODY
           GET_VAR 'value-parameter vararg xs: String' type=kotlin.Array<out kotlin.String> origin=INITIALIZE_PROPERTY_FROM_PARAMETER
       FUN DEFAULT_PROPERTY_ACCESSOR name:<get-xs> visibility:public modality:FINAL <> ($this:A) returnType:Array<out String> flags:
diff --git a/compiler/testData/ir/irText/declarations/annotations/typeAliasesWithAnnotations.txt b/compiler/testData/ir/irText/declarations/annotations/typeAliasesWithAnnotations.txt
index 34994157909..dc4729a7897 100644
--- a/compiler/testData/ir/irText/declarations/annotations/typeAliasesWithAnnotations.txt
+++ b/compiler/testData/ir/irText/declarations/annotations/typeAliasesWithAnnotations.txt
@@ -10,7 +10,7 @@ FILE fqName:<root> fileName:/typeAliasesWithAnnotations.kt
     CONSTRUCTOR visibility:public <> (x:kotlin.String) returnType:TestAnn flags:
       VALUE_PARAMETER name:x index:0 type:kotlin.String flags:
     PROPERTY name:x type:kotlin.String visibility:public modality:FINAL flags:val
-      FIELD PROPERTY_BACKING_FIELD name:x type:kotlin.String visibility:public
+      FIELD PROPERTY_BACKING_FIELD name:x type:kotlin.String visibility:public flags:final
         EXPRESSION_BODY
           GET_VAR 'value-parameter x: String' type=kotlin.String origin=INITIALIZE_PROPERTY_FROM_PARAMETER
       FUN DEFAULT_PROPERTY_ACCESSOR name:<get-x> visibility:public modality:FINAL <> ($this:TestAnn) returnType:String flags:
diff --git a/compiler/testData/ir/irText/declarations/annotations/valueParametersWithAnnotations.txt b/compiler/testData/ir/irText/declarations/annotations/valueParametersWithAnnotations.txt
index ffe90d212b0..41d8ce33b78 100644
--- a/compiler/testData/ir/irText/declarations/annotations/valueParametersWithAnnotations.txt
+++ b/compiler/testData/ir/irText/declarations/annotations/valueParametersWithAnnotations.txt
@@ -6,7 +6,7 @@ FILE fqName:<root> fileName:/valueParametersWithAnnotations.kt
     CONSTRUCTOR visibility:public <> (x:kotlin.String) returnType:TestAnn flags:
       VALUE_PARAMETER name:x index:0 type:kotlin.String flags:
     PROPERTY name:x type:kotlin.String visibility:public modality:FINAL flags:val
-      FIELD PROPERTY_BACKING_FIELD name:x type:kotlin.String visibility:public
+      FIELD PROPERTY_BACKING_FIELD name:x type:kotlin.String visibility:public flags:final
         EXPRESSION_BODY
           GET_VAR 'value-parameter x: String' type=kotlin.String origin=INITIALIZE_PROPERTY_FROM_PARAMETER
       FUN DEFAULT_PROPERTY_ACCESSOR name:<get-x> visibility:public modality:FINAL <> ($this:TestAnn) returnType:String flags:
@@ -47,7 +47,7 @@ FILE fqName:<root> fileName:/valueParametersWithAnnotations.kt
         DELEGATING_CONSTRUCTOR_CALL 'constructor Any()'
         INSTANCE_INITIALIZER_CALL classDescriptor='TestClassConstructor1'
     PROPERTY name:xx type:kotlin.Int visibility:public modality:FINAL flags:val
-      FIELD PROPERTY_BACKING_FIELD name:xx type:kotlin.Int visibility:public
+      FIELD PROPERTY_BACKING_FIELD name:xx type:kotlin.Int visibility:public flags:final
         EXPRESSION_BODY
           GET_VAR 'value-parameter x: Int' type=kotlin.Int origin=null
       FUN DEFAULT_PROPERTY_ACCESSOR name:<get-xx> visibility:public modality:FINAL <> ($this:TestClassConstructor1) returnType:Int flags:
diff --git a/compiler/testData/ir/irText/declarations/annotations/varargsInAnnotationArguments.txt b/compiler/testData/ir/irText/declarations/annotations/varargsInAnnotationArguments.txt
index fd691e21c79..f5bb1ad52c1 100644
--- a/compiler/testData/ir/irText/declarations/annotations/varargsInAnnotationArguments.txt
+++ b/compiler/testData/ir/irText/declarations/annotations/varargsInAnnotationArguments.txt
@@ -6,7 +6,7 @@ FILE fqName:<root> fileName:/varargsInAnnotationArguments.kt
     CONSTRUCTOR visibility:public <> (xs:kotlin.IntArray) returnType:A1 flags:
       VALUE_PARAMETER name:xs index:0 type:kotlin.IntArray varargElementType:kotlin.Int flags:vararg
     PROPERTY name:xs type:kotlin.IntArray visibility:public modality:FINAL flags:val
-      FIELD PROPERTY_BACKING_FIELD name:xs type:kotlin.IntArray visibility:public
+      FIELD PROPERTY_BACKING_FIELD name:xs type:kotlin.IntArray visibility:public flags:final
         EXPRESSION_BODY
           GET_VAR 'value-parameter vararg xs: Int' type=kotlin.IntArray origin=INITIALIZE_PROPERTY_FROM_PARAMETER
       FUN DEFAULT_PROPERTY_ACCESSOR name:<get-xs> visibility:public modality:FINAL <> ($this:A1) returnType:IntArray flags:
@@ -35,7 +35,7 @@ FILE fqName:<root> fileName:/varargsInAnnotationArguments.kt
     CONSTRUCTOR visibility:public <> (xs:kotlin.Array<out kotlin.String>) returnType:A2 flags:
       VALUE_PARAMETER name:xs index:0 type:kotlin.Array<out kotlin.String> varargElementType:kotlin.String flags:vararg
     PROPERTY name:xs type:kotlin.Array<out kotlin.String> visibility:public modality:FINAL flags:val
-      FIELD PROPERTY_BACKING_FIELD name:xs type:kotlin.Array<out kotlin.String> visibility:public
+      FIELD PROPERTY_BACKING_FIELD name:xs type:kotlin.Array<out kotlin.String> visibility:public flags:final
         EXPRESSION_BODY
           GET_VAR 'value-parameter vararg xs: String' type=kotlin.Array<out kotlin.String> origin=INITIALIZE_PROPERTY_FROM_PARAMETER
       FUN DEFAULT_PROPERTY_ACCESSOR name:<get-xs> visibility:public modality:FINAL <> ($this:A2) returnType:Array<out String> flags:
@@ -64,7 +64,7 @@ FILE fqName:<root> fileName:/varargsInAnnotationArguments.kt
     CONSTRUCTOR visibility:public <> (xs:kotlin.Array<out A1>) returnType:AA flags:
       VALUE_PARAMETER name:xs index:0 type:kotlin.Array<out A1> varargElementType:A1 flags:vararg
     PROPERTY name:xs type:kotlin.Array<out A1> visibility:public modality:FINAL flags:val
-      FIELD PROPERTY_BACKING_FIELD name:xs type:kotlin.Array<out A1> visibility:public
+      FIELD PROPERTY_BACKING_FIELD name:xs type:kotlin.Array<out A1> visibility:public flags:final
         EXPRESSION_BODY
           GET_VAR 'value-parameter vararg xs: A1' type=kotlin.Array<out A1> origin=INITIALIZE_PROPERTY_FROM_PARAMETER
       FUN DEFAULT_PROPERTY_ACCESSOR name:<get-xs> visibility:public modality:FINAL <> ($this:AA) returnType:Array<out A1> flags:
diff --git a/compiler/testData/ir/irText/declarations/annotations/variablesWithAnnotations.txt b/compiler/testData/ir/irText/declarations/annotations/variablesWithAnnotations.txt
index 9f17a53f671..e16231eca53 100644
--- a/compiler/testData/ir/irText/declarations/annotations/variablesWithAnnotations.txt
+++ b/compiler/testData/ir/irText/declarations/annotations/variablesWithAnnotations.txt
@@ -6,7 +6,7 @@ FILE fqName:<root> fileName:/variablesWithAnnotations.kt
     CONSTRUCTOR visibility:public <> (x:kotlin.String) returnType:TestAnn flags:
       VALUE_PARAMETER name:x index:0 type:kotlin.String flags:
     PROPERTY name:x type:kotlin.String visibility:public modality:FINAL flags:val
-      FIELD PROPERTY_BACKING_FIELD name:x type:kotlin.String visibility:public
+      FIELD PROPERTY_BACKING_FIELD name:x type:kotlin.String visibility:public flags:final
         EXPRESSION_BODY
           GET_VAR 'value-parameter x: String' type=kotlin.String origin=INITIALIZE_PROPERTY_FROM_PARAMETER
       FUN DEFAULT_PROPERTY_ACCESSOR name:<get-x> visibility:public modality:FINAL <> ($this:TestAnn) returnType:String flags:
diff --git a/compiler/testData/ir/irText/declarations/catchParameterInTopLevelProperty.txt b/compiler/testData/ir/irText/declarations/catchParameterInTopLevelProperty.txt
index 43d14210ca8..b5d0a2311a3 100644
--- a/compiler/testData/ir/irText/declarations/catchParameterInTopLevelProperty.txt
+++ b/compiler/testData/ir/irText/declarations/catchParameterInTopLevelProperty.txt
@@ -1,6 +1,6 @@
 FILE fqName:<root> fileName:/catchParameterInTopLevelProperty.kt
   PROPERTY name:test type:kotlin.Unit visibility:public modality:FINAL flags:val
-    FIELD PROPERTY_BACKING_FIELD name:test type:kotlin.Unit visibility:public
+    FIELD PROPERTY_BACKING_FIELD name:test type:kotlin.Unit visibility:public flags:final
       EXPRESSION_BODY
         TRY type=kotlin.Unit
           try: BLOCK type=kotlin.Unit origin=null
@@ -11,4 +11,3 @@ FILE fqName:<root> fileName:/catchParameterInTopLevelProperty.kt
       BLOCK_BODY
         RETURN type=kotlin.Nothing from='<get-test>(): Unit'
           GET_FIELD 'test: Unit' type=kotlin.Unit origin=null
-
diff --git a/compiler/testData/ir/irText/declarations/classLevelProperties.txt b/compiler/testData/ir/irText/declarations/classLevelProperties.txt
index 8587766a129..22532f1b0f9 100644
--- a/compiler/testData/ir/irText/declarations/classLevelProperties.txt
+++ b/compiler/testData/ir/irText/declarations/classLevelProperties.txt
@@ -8,7 +8,7 @@ FILE fqName:<root> fileName:/classLevelProperties.kt
         DELEGATING_CONSTRUCTOR_CALL 'constructor Any()'
         INSTANCE_INITIALIZER_CALL classDescriptor='C'
     PROPERTY name:test1 type:kotlin.Int visibility:public modality:FINAL flags:val
-      FIELD PROPERTY_BACKING_FIELD name:test1 type:kotlin.Int visibility:public
+      FIELD PROPERTY_BACKING_FIELD name:test1 type:kotlin.Int visibility:public flags:final
         EXPRESSION_BODY
           CONST Int type=kotlin.Int value=0
       FUN DEFAULT_PROPERTY_ACCESSOR name:<get-test1> visibility:public modality:FINAL <> ($this:C) returnType:Int flags:
@@ -24,7 +24,7 @@ FILE fqName:<root> fileName:/classLevelProperties.kt
           RETURN type=kotlin.Nothing from='<get-test2>(): Int'
             CONST Int type=kotlin.Int value=0
     PROPERTY name:test3 type:kotlin.Int visibility:public modality:FINAL flags:var
-      FIELD PROPERTY_BACKING_FIELD name:test3 type:kotlin.Int visibility:public
+      FIELD PROPERTY_BACKING_FIELD name:test3 type:kotlin.Int visibility:public flags:final
         EXPRESSION_BODY
           CONST Int type=kotlin.Int value=0
       FUN DEFAULT_PROPERTY_ACCESSOR name:<get-test3> visibility:public modality:FINAL <> ($this:C) returnType:Int flags:
@@ -41,7 +41,7 @@ FILE fqName:<root> fileName:/classLevelProperties.kt
             receiver: GET_VAR 'this@C: C' type=C origin=null
             value: GET_VAR 'value-parameter <set-?>: Int' type=kotlin.Int origin=null
     PROPERTY name:test4 type:kotlin.Int visibility:public modality:FINAL flags:var
-      FIELD PROPERTY_BACKING_FIELD name:test4 type:kotlin.Int visibility:public
+      FIELD PROPERTY_BACKING_FIELD name:test4 type:kotlin.Int visibility:public flags:final
         EXPRESSION_BODY
           CONST Int type=kotlin.Int value=1
       FUN DEFAULT_PROPERTY_ACCESSOR name:<get-test4> visibility:public modality:FINAL <> ($this:C) returnType:Int flags:
@@ -58,7 +58,7 @@ FILE fqName:<root> fileName:/classLevelProperties.kt
             receiver: GET_VAR 'this@C: C' type=C origin=null
             value: GET_VAR 'value-parameter value: Int' type=kotlin.Int origin=null
     PROPERTY name:test5 type:kotlin.Int visibility:public modality:FINAL flags:var
-      FIELD PROPERTY_BACKING_FIELD name:test5 type:kotlin.Int visibility:public
+      FIELD PROPERTY_BACKING_FIELD name:test5 type:kotlin.Int visibility:public flags:final
         EXPRESSION_BODY
           CONST Int type=kotlin.Int value=1
       FUN DEFAULT_PROPERTY_ACCESSOR name:<get-test5> visibility:public modality:FINAL <> ($this:C) returnType:Int flags:
@@ -75,7 +75,7 @@ FILE fqName:<root> fileName:/classLevelProperties.kt
             receiver: GET_VAR 'this@C: C' type=C origin=null
             value: GET_VAR 'value-parameter <set-?>: Int' type=kotlin.Int origin=null
     PROPERTY name:test6 type:kotlin.Int visibility:public modality:FINAL flags:val
-      FIELD PROPERTY_BACKING_FIELD name:test6 type:kotlin.Int visibility:public
+      FIELD PROPERTY_BACKING_FIELD name:test6 type:kotlin.Int visibility:public flags:final
         EXPRESSION_BODY
           CONST Int type=kotlin.Int value=1
       FUN name:<get-test6> visibility:public modality:FINAL <> ($this:C) returnType:Int flags:
@@ -85,7 +85,7 @@ FILE fqName:<root> fileName:/classLevelProperties.kt
             GET_FIELD 'test6: Int' type=kotlin.Int origin=null
               receiver: GET_VAR 'this@C: C' type=C origin=null
     PROPERTY name:test7 type:kotlin.Int visibility:public modality:FINAL flags:delegatedmval
-      FIELD DELEGATE name:test7$delegate type:kotlin.Lazy<kotlin.Int> visibility:private
+      FIELD DELEGATE name:test7$delegate type:kotlin.Lazy<kotlin.Int> visibility:private flags:final
         EXPRESSION_BODY
           CALL 'lazy(() -> Int): Lazy<Int>' type=kotlin.Lazy<kotlin.Int> origin=null
             <T>: Int
@@ -106,7 +106,7 @@ FILE fqName:<root> fileName:/classLevelProperties.kt
               thisRef: GET_VAR 'this@C: C' type=C origin=null
               property: PROPERTY_REFERENCE 'test7: Int' field=null getter='<get-test7>(): Int' setter=null type=kotlin.reflect.KProperty1<C, kotlin.Int> origin=PROPERTY_REFERENCE_FOR_DELEGATE
     PROPERTY name:test8 type:kotlin.Int visibility:public modality:FINAL flags:delegatedmvar
-      FIELD DELEGATE name:test8$delegate type:kotlin.collections.HashMap<kotlin.String, kotlin.Int> /* = java.util.HashMap<kotlin.String, kotlin.Int> */ visibility:private
+      FIELD DELEGATE name:test8$delegate type:kotlin.collections.HashMap<kotlin.String, kotlin.Int> /* = java.util.HashMap<kotlin.String, kotlin.Int> */ visibility:private flags:final
         EXPRESSION_BODY
           CALL 'hashMapOf(): HashMap<String, Int> /* = HashMap<String, Int> */' type=kotlin.collections.HashMap<kotlin.String, kotlin.Int> /* = java.util.HashMap<kotlin.String, kotlin.Int> */ origin=null
             <K>: String
diff --git a/compiler/testData/ir/irText/declarations/delegatedProperties.txt b/compiler/testData/ir/irText/declarations/delegatedProperties.txt
index eb3b7fa46a4..1c372f744dc 100644
--- a/compiler/testData/ir/irText/declarations/delegatedProperties.txt
+++ b/compiler/testData/ir/irText/declarations/delegatedProperties.txt
@@ -1,6 +1,6 @@
 FILE fqName:<root> fileName:/delegatedProperties.kt
   PROPERTY name:test1 type:kotlin.Int visibility:public modality:FINAL flags:delegatedmval
-    FIELD DELEGATE name:test1$delegate type:kotlin.Lazy<kotlin.Int> visibility:private
+    FIELD DELEGATE name:test1$delegate type:kotlin.Lazy<kotlin.Int> visibility:private flags:final
       EXPRESSION_BODY
         CALL 'lazy(() -> Int): Lazy<Int>' type=kotlin.Lazy<kotlin.Int> origin=null
           <T>: Int
@@ -28,7 +28,7 @@ FILE fqName:<root> fileName:/delegatedProperties.kt
         DELEGATING_CONSTRUCTOR_CALL 'constructor Any()'
         INSTANCE_INITIALIZER_CALL classDescriptor='C'
     PROPERTY name:map type:kotlin.collections.MutableMap<kotlin.String, kotlin.Any> visibility:public modality:FINAL flags:val
-      FIELD PROPERTY_BACKING_FIELD name:map type:kotlin.collections.MutableMap<kotlin.String, kotlin.Any> visibility:public
+      FIELD PROPERTY_BACKING_FIELD name:map type:kotlin.collections.MutableMap<kotlin.String, kotlin.Any> visibility:public flags:final
         EXPRESSION_BODY
           GET_VAR 'value-parameter map: MutableMap<String, Any>' type=kotlin.collections.MutableMap<kotlin.String, kotlin.Any> origin=INITIALIZE_PROPERTY_FROM_PARAMETER
       FUN DEFAULT_PROPERTY_ACCESSOR name:<get-map> visibility:public modality:FINAL <> ($this:C) returnType:MutableMap<String, Any> flags:
@@ -38,7 +38,7 @@ FILE fqName:<root> fileName:/delegatedProperties.kt
             GET_FIELD 'map: MutableMap<String, Any>' type=kotlin.collections.MutableMap<kotlin.String, kotlin.Any> origin=null
               receiver: GET_VAR 'this@C: C' type=C origin=null
     PROPERTY name:test2 type:kotlin.Int visibility:public modality:FINAL flags:delegatedmval
-      FIELD DELEGATE name:test2$delegate type:kotlin.Lazy<kotlin.Int> visibility:private
+      FIELD DELEGATE name:test2$delegate type:kotlin.Lazy<kotlin.Int> visibility:private flags:final
         EXPRESSION_BODY
           CALL 'lazy(() -> Int): Lazy<Int>' type=kotlin.Lazy<kotlin.Int> origin=null
             <T>: Int
@@ -59,7 +59,7 @@ FILE fqName:<root> fileName:/delegatedProperties.kt
               thisRef: GET_VAR 'this@C: C' type=C origin=null
               property: PROPERTY_REFERENCE 'test2: Int' field=null getter='<get-test2>(): Int' setter=null type=kotlin.reflect.KProperty1<C, kotlin.Int> origin=PROPERTY_REFERENCE_FOR_DELEGATE
     PROPERTY name:test3 type:kotlin.Any visibility:public modality:FINAL flags:delegatedmvar
-      FIELD DELEGATE name:test3$delegate type:kotlin.collections.MutableMap<kotlin.String, kotlin.Any> visibility:private
+      FIELD DELEGATE name:test3$delegate type:kotlin.collections.MutableMap<kotlin.String, kotlin.Any> visibility:private flags:final
         EXPRESSION_BODY
           CALL '<get-map>(): MutableMap<String, Any>' type=kotlin.collections.MutableMap<kotlin.String, kotlin.Any> origin=GET_PROPERTY
             $this: GET_VAR 'this@C: C' type=C origin=null
@@ -100,7 +100,7 @@ FILE fqName:<root> fileName:/delegatedProperties.kt
         FUN IR_EXTERNAL_DECLARATION_STUB name:toString visibility:public modality:OPEN <> ($this:kotlin.Any) returnType:String flags:
       $this: VALUE_PARAMETER name:<this> type:kotlin.Any flags:
   PROPERTY name:test4 type:kotlin.Any visibility:public modality:FINAL flags:delegatedmvar
-    FIELD DELEGATE name:test4$delegate type:kotlin.collections.HashMap<kotlin.String, kotlin.Any> /* = java.util.HashMap<kotlin.String, kotlin.Any> */ visibility:private
+    FIELD DELEGATE name:test4$delegate type:kotlin.collections.HashMap<kotlin.String, kotlin.Any> /* = java.util.HashMap<kotlin.String, kotlin.Any> */ visibility:private flags:final
       EXPRESSION_BODY
         CALL 'hashMapOf(): HashMap<String, Any> /* = HashMap<String, Any> */' type=kotlin.collections.HashMap<kotlin.String, kotlin.Any> /* = java.util.HashMap<kotlin.String, kotlin.Any> */ origin=null
           <K>: String
diff --git a/compiler/testData/ir/irText/declarations/fakeOverrides.txt b/compiler/testData/ir/irText/declarations/fakeOverrides.txt
index 945bf269428..cd96d644673 100644
--- a/compiler/testData/ir/irText/declarations/fakeOverrides.txt
+++ b/compiler/testData/ir/irText/declarations/fakeOverrides.txt
@@ -79,7 +79,7 @@ FILE fqName:<root> fileName:/fakeOverrides.kt
           <T>: String
         INSTANCE_INITIALIZER_CALL classDescriptor='Test1'
     PROPERTY name:bar type:kotlin.Int visibility:public modality:OPEN flags:val
-      FIELD PROPERTY_BACKING_FIELD name:bar type:kotlin.Int visibility:public
+      FIELD PROPERTY_BACKING_FIELD name:bar type:kotlin.Int visibility:public flags:
         EXPRESSION_BODY
           CONST Int type=kotlin.Int value=42
       FUN DEFAULT_PROPERTY_ACCESSOR name:<get-bar> visibility:public modality:OPEN <> ($this:Test1) returnType:Int flags:
diff --git a/compiler/testData/ir/irText/declarations/fileWithAnnotations.txt b/compiler/testData/ir/irText/declarations/fileWithAnnotations.txt
index f49e10aaa16..b41e070ee88 100644
--- a/compiler/testData/ir/irText/declarations/fileWithAnnotations.txt
+++ b/compiler/testData/ir/irText/declarations/fileWithAnnotations.txt
@@ -7,7 +7,7 @@ FILE fqName:<root> fileName:/fileWithAnnotations.kt
   FUN name:foo visibility:public modality:FINAL <> () returnType:Unit flags:
     BLOCK_BODY
   PROPERTY name:bar type:kotlin.Int visibility:public modality:FINAL flags:val
-    FIELD PROPERTY_BACKING_FIELD name:bar type:kotlin.Int visibility:public
+    FIELD PROPERTY_BACKING_FIELD name:bar type:kotlin.Int visibility:public flags:final
       EXPRESSION_BODY
         CONST Int type=kotlin.Int value=42
     FUN DEFAULT_PROPERTY_ACCESSOR name:<get-bar> visibility:public modality:FINAL <> () returnType:Int flags:
diff --git a/compiler/testData/ir/irText/declarations/localClassWithOverrides.txt b/compiler/testData/ir/irText/declarations/localClassWithOverrides.txt
index e28b3a18895..c77e72717bb 100644
--- a/compiler/testData/ir/irText/declarations/localClassWithOverrides.txt
+++ b/compiler/testData/ir/irText/declarations/localClassWithOverrides.txt
@@ -47,7 +47,7 @@ FILE fqName:<root> fileName:/localClassWithOverrides.kt
           $this: VALUE_PARAMETER name:<this> type:outer.Local flags:
           BLOCK_BODY
         PROPERTY name:aval type:kotlin.Int visibility:public modality:OPEN flags:val
-          FIELD PROPERTY_BACKING_FIELD name:aval type:kotlin.Int visibility:public
+          FIELD PROPERTY_BACKING_FIELD name:aval type:kotlin.Int visibility:public flags:
             EXPRESSION_BODY
               CONST Int type=kotlin.Int value=1
           FUN DEFAULT_PROPERTY_ACCESSOR name:<get-aval> visibility:public modality:OPEN <> ($this:outer.Local) returnType:Int flags:
@@ -59,7 +59,7 @@ FILE fqName:<root> fileName:/localClassWithOverrides.kt
                 GET_FIELD 'aval: Int' type=kotlin.Int origin=null
                   receiver: GET_VAR 'this@Local: Local' type=outer.Local origin=null
         PROPERTY name:avar type:kotlin.Int visibility:public modality:OPEN flags:var
-          FIELD PROPERTY_BACKING_FIELD name:avar type:kotlin.Int visibility:public
+          FIELD PROPERTY_BACKING_FIELD name:avar type:kotlin.Int visibility:public flags:
             EXPRESSION_BODY
               CONST Int type=kotlin.Int value=2
           FUN DEFAULT_PROPERTY_ACCESSOR name:<get-avar> visibility:public modality:OPEN <> ($this:outer.Local) returnType:Int flags:
diff --git a/compiler/testData/ir/irText/declarations/localDelegatedPropertyWithSuspendOperators.txt b/compiler/testData/ir/irText/declarations/localDelegatedPropertyWithSuspendOperators.txt
index b45e0ff445c..d6985e264c4 100644
--- a/compiler/testData/ir/irText/declarations/localDelegatedPropertyWithSuspendOperators.txt
+++ b/compiler/testData/ir/irText/declarations/localDelegatedPropertyWithSuspendOperators.txt
@@ -8,7 +8,7 @@ FILE fqName:<root> fileName:/localDelegatedPropertyWithSuspendOperators.kt
         DELEGATING_CONSTRUCTOR_CALL 'constructor Any()'
         INSTANCE_INITIALIZER_CALL classDescriptor='A'
     PROPERTY name:z type:kotlin.Int visibility:public modality:FINAL flags:var
-      FIELD PROPERTY_BACKING_FIELD name:z type:kotlin.Int visibility:public
+      FIELD PROPERTY_BACKING_FIELD name:z type:kotlin.Int visibility:public flags:final
         EXPRESSION_BODY
           CONST Int type=kotlin.Int value=42
       FUN DEFAULT_PROPERTY_ACCESSOR name:<get-z> visibility:public modality:FINAL <> ($this:A) returnType:Int flags:
diff --git a/compiler/testData/ir/irText/declarations/packageLevelProperties.txt b/compiler/testData/ir/irText/declarations/packageLevelProperties.txt
index bee3ff919cd..453f4128d92 100644
--- a/compiler/testData/ir/irText/declarations/packageLevelProperties.txt
+++ b/compiler/testData/ir/irText/declarations/packageLevelProperties.txt
@@ -1,6 +1,6 @@
 FILE fqName:<root> fileName:/packageLevelProperties.kt
   PROPERTY name:test1 type:kotlin.Int visibility:public modality:FINAL flags:val
-    FIELD PROPERTY_BACKING_FIELD name:test1 type:kotlin.Int visibility:public
+    FIELD PROPERTY_BACKING_FIELD name:test1 type:kotlin.Int visibility:public flags:final
       EXPRESSION_BODY
         CONST Int type=kotlin.Int value=0
     FUN DEFAULT_PROPERTY_ACCESSOR name:<get-test1> visibility:public modality:FINAL <> () returnType:Int flags:
@@ -13,7 +13,7 @@ FILE fqName:<root> fileName:/packageLevelProperties.kt
         RETURN type=kotlin.Nothing from='<get-test2>(): Int'
           CONST Int type=kotlin.Int value=0
   PROPERTY name:test3 type:kotlin.Int visibility:public modality:FINAL flags:var
-    FIELD PROPERTY_BACKING_FIELD name:test3 type:kotlin.Int visibility:public
+    FIELD PROPERTY_BACKING_FIELD name:test3 type:kotlin.Int visibility:public flags:final
       EXPRESSION_BODY
         CONST Int type=kotlin.Int value=0
     FUN DEFAULT_PROPERTY_ACCESSOR name:<get-test3> visibility:public modality:FINAL <> () returnType:Int flags:
@@ -26,7 +26,7 @@ FILE fqName:<root> fileName:/packageLevelProperties.kt
         SET_FIELD 'test3: Int' type=kotlin.Unit origin=null
           value: GET_VAR 'value-parameter <set-?>: Int' type=kotlin.Int origin=null
   PROPERTY name:test4 type:kotlin.Int visibility:public modality:FINAL flags:var
-    FIELD PROPERTY_BACKING_FIELD name:test4 type:kotlin.Int visibility:public
+    FIELD PROPERTY_BACKING_FIELD name:test4 type:kotlin.Int visibility:public flags:final
       EXPRESSION_BODY
         CONST Int type=kotlin.Int value=1
     FUN DEFAULT_PROPERTY_ACCESSOR name:<get-test4> visibility:public modality:FINAL <> () returnType:Int flags:
@@ -39,7 +39,7 @@ FILE fqName:<root> fileName:/packageLevelProperties.kt
         SET_FIELD 'test4: Int' type=kotlin.Unit origin=EQ
           value: GET_VAR 'value-parameter value: Int' type=kotlin.Int origin=null
   PROPERTY name:test5 type:kotlin.Int visibility:public modality:FINAL flags:var
-    FIELD PROPERTY_BACKING_FIELD name:test5 type:kotlin.Int visibility:public
+    FIELD PROPERTY_BACKING_FIELD name:test5 type:kotlin.Int visibility:public flags:final
       EXPRESSION_BODY
         CONST Int type=kotlin.Int value=1
     FUN DEFAULT_PROPERTY_ACCESSOR name:<get-test5> visibility:public modality:FINAL <> () returnType:Int flags:
@@ -52,7 +52,7 @@ FILE fqName:<root> fileName:/packageLevelProperties.kt
         SET_FIELD 'test5: Int' type=kotlin.Unit origin=null
           value: GET_VAR 'value-parameter <set-?>: Int' type=kotlin.Int origin=null
   PROPERTY name:test6 type:kotlin.Int visibility:public modality:FINAL flags:val
-    FIELD PROPERTY_BACKING_FIELD name:test6 type:kotlin.Int visibility:public
+    FIELD PROPERTY_BACKING_FIELD name:test6 type:kotlin.Int visibility:public flags:final
       EXPRESSION_BODY
         CONST Int type=kotlin.Int value=1
     FUN name:<get-test6> visibility:public modality:FINAL <> () returnType:Int flags:
@@ -60,7 +60,7 @@ FILE fqName:<root> fileName:/packageLevelProperties.kt
         RETURN type=kotlin.Nothing from='<get-test6>(): Int'
           GET_FIELD 'test6: Int' type=kotlin.Int origin=null
   PROPERTY name:test7 type:kotlin.Int visibility:public modality:FINAL flags:delegatedmval
-    FIELD DELEGATE name:test7$delegate type:kotlin.Lazy<kotlin.Int> visibility:private
+    FIELD DELEGATE name:test7$delegate type:kotlin.Lazy<kotlin.Int> visibility:private flags:final
       EXPRESSION_BODY
         CALL 'lazy(() -> Int): Lazy<Int>' type=kotlin.Lazy<kotlin.Int> origin=null
           <T>: Int
@@ -79,7 +79,7 @@ FILE fqName:<root> fileName:/packageLevelProperties.kt
             thisRef: CONST Null type=kotlin.Nothing? value=null
             property: PROPERTY_REFERENCE 'test7: Int' field=null getter='<get-test7>(): Int' setter=null type=kotlin.reflect.KProperty0<kotlin.Int> origin=PROPERTY_REFERENCE_FOR_DELEGATE
   PROPERTY name:test8 type:kotlin.Int visibility:public modality:FINAL flags:delegatedmvar
-    FIELD DELEGATE name:test8$delegate type:kotlin.collections.HashMap<kotlin.String, kotlin.Int> /* = java.util.HashMap<kotlin.String, kotlin.Int> */ visibility:private
+    FIELD DELEGATE name:test8$delegate type:kotlin.collections.HashMap<kotlin.String, kotlin.Int> /* = java.util.HashMap<kotlin.String, kotlin.Int> */ visibility:private flags:final
       EXPRESSION_BODY
         CALL 'hashMapOf(): HashMap<String, Int> /* = HashMap<String, Int> */' type=kotlin.collections.HashMap<kotlin.String, kotlin.Int> /* = java.util.HashMap<kotlin.String, kotlin.Int> */ origin=null
           <K>: String
diff --git a/compiler/testData/ir/irText/declarations/parameters/constructor.txt b/compiler/testData/ir/irText/declarations/parameters/constructor.txt
index 2f872b2e81b..eba84de6de4 100644
--- a/compiler/testData/ir/irText/declarations/parameters/constructor.txt
+++ b/compiler/testData/ir/irText/declarations/parameters/constructor.txt
@@ -16,7 +16,7 @@ FILE fqName:<root> fileName:/constructor.kt
         DELEGATING_CONSTRUCTOR_CALL 'constructor Any()'
         INSTANCE_INITIALIZER_CALL classDescriptor='Test1'
     PROPERTY name:x type:T1 visibility:public modality:FINAL flags:val
-      FIELD PROPERTY_BACKING_FIELD name:x type:T1 visibility:public
+      FIELD PROPERTY_BACKING_FIELD name:x type:T1 visibility:public flags:final
         EXPRESSION_BODY
           GET_VAR 'value-parameter x: T1' type=T1 origin=INITIALIZE_PROPERTY_FROM_PARAMETER
       FUN DEFAULT_PROPERTY_ACCESSOR name:<get-x> visibility:public modality:FINAL <> ($this:Test1<T1, T2>) returnType:T1 flags:
@@ -26,7 +26,7 @@ FILE fqName:<root> fileName:/constructor.kt
             GET_FIELD 'x: T1' type=T1 origin=null
               receiver: GET_VAR 'this@Test1: Test1<T1, T2>' type=Test1<T1, T2> origin=null
     PROPERTY name:y type:T2 visibility:public modality:FINAL flags:val
-      FIELD PROPERTY_BACKING_FIELD name:y type:T2 visibility:public
+      FIELD PROPERTY_BACKING_FIELD name:y type:T2 visibility:public flags:final
         EXPRESSION_BODY
           GET_VAR 'value-parameter y: T2' type=T2 origin=INITIALIZE_PROPERTY_FROM_PARAMETER
       FUN DEFAULT_PROPERTY_ACCESSOR name:<get-y> visibility:public modality:FINAL <> ($this:Test1<T1, T2>) returnType:T2 flags:
@@ -59,7 +59,7 @@ FILE fqName:<root> fileName:/constructor.kt
         DELEGATING_CONSTRUCTOR_CALL 'constructor Any()'
         INSTANCE_INITIALIZER_CALL classDescriptor='Test2'
     PROPERTY name:y type:kotlin.String visibility:public modality:FINAL flags:val
-      FIELD PROPERTY_BACKING_FIELD name:y type:kotlin.String visibility:public
+      FIELD PROPERTY_BACKING_FIELD name:y type:kotlin.String visibility:public flags:final
         EXPRESSION_BODY
           GET_VAR 'value-parameter y: String' type=kotlin.String origin=INITIALIZE_PROPERTY_FROM_PARAMETER
       FUN DEFAULT_PROPERTY_ACCESSOR name:<get-y> visibility:public modality:FINAL <> ($this:Test2) returnType:String flags:
@@ -82,7 +82,7 @@ FILE fqName:<root> fileName:/constructor.kt
           DELEGATING_CONSTRUCTOR_CALL 'constructor Any()'
           INSTANCE_INITIALIZER_CALL classDescriptor='TestInner'
       PROPERTY name:z type:Z visibility:public modality:FINAL flags:val
-        FIELD PROPERTY_BACKING_FIELD name:z type:Z visibility:public
+        FIELD PROPERTY_BACKING_FIELD name:z type:Z visibility:public flags:final
           EXPRESSION_BODY
             GET_VAR 'value-parameter z: Z' type=Z origin=INITIALIZE_PROPERTY_FROM_PARAMETER
         FUN DEFAULT_PROPERTY_ACCESSOR name:<get-z> visibility:public modality:FINAL <> ($this:Test2.TestInner<Z>) returnType:Z flags:
@@ -139,7 +139,7 @@ FILE fqName:<root> fileName:/constructor.kt
         DELEGATING_CONSTRUCTOR_CALL 'constructor Any()'
         INSTANCE_INITIALIZER_CALL classDescriptor='Test3'
     PROPERTY name:x type:kotlin.Int visibility:public modality:FINAL flags:val
-      FIELD PROPERTY_BACKING_FIELD name:x type:kotlin.Int visibility:public
+      FIELD PROPERTY_BACKING_FIELD name:x type:kotlin.Int visibility:public flags:final
         EXPRESSION_BODY
           GET_VAR 'value-parameter x: Int' type=kotlin.Int origin=INITIALIZE_PROPERTY_FROM_PARAMETER
       FUN DEFAULT_PROPERTY_ACCESSOR name:<get-x> visibility:public modality:FINAL <> ($this:Test3) returnType:Int flags:
@@ -149,7 +149,7 @@ FILE fqName:<root> fileName:/constructor.kt
             GET_FIELD 'x: Int' type=kotlin.Int origin=null
               receiver: GET_VAR 'this@Test3: Test3' type=Test3 origin=null
     PROPERTY name:y type:kotlin.String visibility:public modality:FINAL flags:val
-      FIELD PROPERTY_BACKING_FIELD name:y type:kotlin.String visibility:public
+      FIELD PROPERTY_BACKING_FIELD name:y type:kotlin.String visibility:public flags:final
         EXPRESSION_BODY
           GET_VAR 'value-parameter y: String = ...' type=kotlin.String origin=INITIALIZE_PROPERTY_FROM_PARAMETER
       FUN DEFAULT_PROPERTY_ACCESSOR name:<get-y> visibility:public modality:FINAL <> ($this:Test3) returnType:String flags:
@@ -184,7 +184,7 @@ FILE fqName:<root> fileName:/constructor.kt
         DELEGATING_CONSTRUCTOR_CALL 'constructor Any()'
         INSTANCE_INITIALIZER_CALL classDescriptor='Test4'
     PROPERTY name:x type:kotlin.Int visibility:public modality:FINAL flags:val
-      FIELD PROPERTY_BACKING_FIELD name:x type:kotlin.Int visibility:public
+      FIELD PROPERTY_BACKING_FIELD name:x type:kotlin.Int visibility:public flags:final
         EXPRESSION_BODY
           GET_VAR 'value-parameter x: Int' type=kotlin.Int origin=INITIALIZE_PROPERTY_FROM_PARAMETER
       FUN DEFAULT_PROPERTY_ACCESSOR name:<get-x> visibility:public modality:FINAL <> ($this:Test4<T>) returnType:Int flags:
diff --git a/compiler/testData/ir/irText/declarations/parameters/dataClassMembers.txt b/compiler/testData/ir/irText/declarations/parameters/dataClassMembers.txt
index e48e22a763c..dceb90e02b0 100644
--- a/compiler/testData/ir/irText/declarations/parameters/dataClassMembers.txt
+++ b/compiler/testData/ir/irText/declarations/parameters/dataClassMembers.txt
@@ -15,7 +15,7 @@ FILE fqName:<root> fileName:/dataClassMembers.kt
         DELEGATING_CONSTRUCTOR_CALL 'constructor Any()'
         INSTANCE_INITIALIZER_CALL classDescriptor='Test'
     PROPERTY name:x type:T visibility:public modality:FINAL flags:val
-      FIELD PROPERTY_BACKING_FIELD name:x type:T visibility:public
+      FIELD PROPERTY_BACKING_FIELD name:x type:T visibility:public flags:final
         EXPRESSION_BODY
           GET_VAR 'value-parameter x: T' type=T origin=INITIALIZE_PROPERTY_FROM_PARAMETER
       FUN DEFAULT_PROPERTY_ACCESSOR name:<get-x> visibility:public modality:FINAL <> ($this:Test<T>) returnType:T flags:
@@ -25,7 +25,7 @@ FILE fqName:<root> fileName:/dataClassMembers.kt
             GET_FIELD 'x: T' type=T origin=null
               receiver: GET_VAR 'this@Test: Test<T>' type=Test<T> origin=null
     PROPERTY name:y type:kotlin.String visibility:public modality:FINAL flags:val
-      FIELD PROPERTY_BACKING_FIELD name:y type:kotlin.String visibility:public
+      FIELD PROPERTY_BACKING_FIELD name:y type:kotlin.String visibility:public flags:final
         EXPRESSION_BODY
           GET_VAR 'value-parameter y: String = ...' type=kotlin.String origin=INITIALIZE_PROPERTY_FROM_PARAMETER
       FUN DEFAULT_PROPERTY_ACCESSOR name:<get-y> visibility:public modality:FINAL <> ($this:Test<T>) returnType:String flags:
diff --git a/compiler/testData/ir/irText/declarations/parameters/defaultPropertyAccessors.txt b/compiler/testData/ir/irText/declarations/parameters/defaultPropertyAccessors.txt
index e0f6bc7a599..05150a4b26f 100644
--- a/compiler/testData/ir/irText/declarations/parameters/defaultPropertyAccessors.txt
+++ b/compiler/testData/ir/irText/declarations/parameters/defaultPropertyAccessors.txt
@@ -1,6 +1,6 @@
 FILE fqName:<root> fileName:/defaultPropertyAccessors.kt
   PROPERTY name:test1 type:kotlin.Int visibility:public modality:FINAL flags:val
-    FIELD PROPERTY_BACKING_FIELD name:test1 type:kotlin.Int visibility:public
+    FIELD PROPERTY_BACKING_FIELD name:test1 type:kotlin.Int visibility:public flags:final
       EXPRESSION_BODY
         CONST Int type=kotlin.Int value=42
     FUN DEFAULT_PROPERTY_ACCESSOR name:<get-test1> visibility:public modality:FINAL <> () returnType:Int flags:
@@ -8,7 +8,7 @@ FILE fqName:<root> fileName:/defaultPropertyAccessors.kt
         RETURN type=kotlin.Nothing from='<get-test1>(): Int'
           GET_FIELD 'test1: Int' type=kotlin.Int origin=null
   PROPERTY name:test2 type:kotlin.Int visibility:public modality:FINAL flags:var
-    FIELD PROPERTY_BACKING_FIELD name:test2 type:kotlin.Int visibility:public
+    FIELD PROPERTY_BACKING_FIELD name:test2 type:kotlin.Int visibility:public flags:final
       EXPRESSION_BODY
         CONST Int type=kotlin.Int value=42
     FUN DEFAULT_PROPERTY_ACCESSOR name:<get-test2> visibility:public modality:FINAL <> () returnType:Int flags:
@@ -29,7 +29,7 @@ FILE fqName:<root> fileName:/defaultPropertyAccessors.kt
         DELEGATING_CONSTRUCTOR_CALL 'constructor Any()'
         INSTANCE_INITIALIZER_CALL classDescriptor='Host'
     PROPERTY name:testMember1 type:kotlin.Int visibility:public modality:FINAL flags:val
-      FIELD PROPERTY_BACKING_FIELD name:testMember1 type:kotlin.Int visibility:public
+      FIELD PROPERTY_BACKING_FIELD name:testMember1 type:kotlin.Int visibility:public flags:final
         EXPRESSION_BODY
           CONST Int type=kotlin.Int value=42
       FUN DEFAULT_PROPERTY_ACCESSOR name:<get-testMember1> visibility:public modality:FINAL <> ($this:Host) returnType:Int flags:
@@ -39,7 +39,7 @@ FILE fqName:<root> fileName:/defaultPropertyAccessors.kt
             GET_FIELD 'testMember1: Int' type=kotlin.Int origin=null
               receiver: GET_VAR 'this@Host: Host' type=Host origin=null
     PROPERTY name:testMember2 type:kotlin.Int visibility:public modality:FINAL flags:var
-      FIELD PROPERTY_BACKING_FIELD name:testMember2 type:kotlin.Int visibility:public
+      FIELD PROPERTY_BACKING_FIELD name:testMember2 type:kotlin.Int visibility:public flags:final
         EXPRESSION_BODY
           CONST Int type=kotlin.Int value=42
       FUN DEFAULT_PROPERTY_ACCESSOR name:<get-testMember2> visibility:public modality:FINAL <> ($this:Host) returnType:Int flags:
@@ -84,7 +84,7 @@ FILE fqName:<root> fileName:/defaultPropertyAccessors.kt
         DELEGATING_CONSTRUCTOR_CALL 'constructor Any()'
         INSTANCE_INITIALIZER_CALL classDescriptor='InPrimaryCtor'
     PROPERTY name:testInPrimaryCtor1 type:T visibility:public modality:FINAL flags:val
-      FIELD PROPERTY_BACKING_FIELD name:testInPrimaryCtor1 type:T visibility:public
+      FIELD PROPERTY_BACKING_FIELD name:testInPrimaryCtor1 type:T visibility:public flags:final
         EXPRESSION_BODY
           GET_VAR 'value-parameter testInPrimaryCtor1: T' type=T origin=INITIALIZE_PROPERTY_FROM_PARAMETER
       FUN DEFAULT_PROPERTY_ACCESSOR name:<get-testInPrimaryCtor1> visibility:public modality:FINAL <> ($this:InPrimaryCtor<T>) returnType:T flags:
@@ -94,7 +94,7 @@ FILE fqName:<root> fileName:/defaultPropertyAccessors.kt
             GET_FIELD 'testInPrimaryCtor1: T' type=T origin=null
               receiver: GET_VAR 'this@InPrimaryCtor: InPrimaryCtor<T>' type=InPrimaryCtor<T> origin=null
     PROPERTY name:testInPrimaryCtor2 type:kotlin.Int visibility:public modality:FINAL flags:var
-      FIELD PROPERTY_BACKING_FIELD name:testInPrimaryCtor2 type:kotlin.Int visibility:public
+      FIELD PROPERTY_BACKING_FIELD name:testInPrimaryCtor2 type:kotlin.Int visibility:public flags:final
         EXPRESSION_BODY
           GET_VAR 'value-parameter testInPrimaryCtor2: Int = ...' type=kotlin.Int origin=INITIALIZE_PROPERTY_FROM_PARAMETER
       FUN DEFAULT_PROPERTY_ACCESSOR name:<get-testInPrimaryCtor2> visibility:public modality:FINAL <> ($this:InPrimaryCtor<T>) returnType:Int flags:
diff --git a/compiler/testData/ir/irText/declarations/parameters/delegatedMembers.txt b/compiler/testData/ir/irText/declarations/parameters/delegatedMembers.txt
index 66b9425dad1..eab0f3f385b 100644
--- a/compiler/testData/ir/irText/declarations/parameters/delegatedMembers.txt
+++ b/compiler/testData/ir/irText/declarations/parameters/delegatedMembers.txt
@@ -44,7 +44,7 @@ FILE fqName:<root> fileName:/delegatedMembers.kt
       BLOCK_BODY
         DELEGATING_CONSTRUCTOR_CALL 'constructor Any()'
         INSTANCE_INITIALIZER_CALL classDescriptor='Test'
-    FIELD DELEGATE name:Test$IBase$delegate type:IBase<TT> visibility:private
+    FIELD DELEGATE name:Test$IBase$delegate type:IBase<TT> visibility:private flags:final
       EXPRESSION_BODY
         GET_VAR 'value-parameter impl: IBase<TT>' type=IBase<TT> origin=null
     FUN DELEGATED_MEMBER name:qux visibility:public modality:OPEN <X> ($this:Test<TT>, t:TT, x:X) returnType:Unit flags:
diff --git a/compiler/testData/ir/irText/declarations/parameters/lambdas.txt b/compiler/testData/ir/irText/declarations/parameters/lambdas.txt
index 2fe527f55d9..ef0befd73a9 100644
--- a/compiler/testData/ir/irText/declarations/parameters/lambdas.txt
+++ b/compiler/testData/ir/irText/declarations/parameters/lambdas.txt
@@ -1,6 +1,6 @@
 FILE fqName:<root> fileName:/lambdas.kt
   PROPERTY name:test1 type:(kotlin.String) -> kotlin.String visibility:public modality:FINAL flags:val
-    FIELD PROPERTY_BACKING_FIELD name:test1 type:(kotlin.String) -> kotlin.String visibility:public
+    FIELD PROPERTY_BACKING_FIELD name:test1 type:(kotlin.String) -> kotlin.String visibility:public flags:final
       EXPRESSION_BODY
         BLOCK type=(kotlin.String) -> kotlin.String origin=LAMBDA
           FUN LOCAL_FUNCTION_FOR_LAMBDA name:<anonymous> visibility:local modality:FINAL <> (it:kotlin.String) returnType:String flags:
@@ -14,7 +14,7 @@ FILE fqName:<root> fileName:/lambdas.kt
         RETURN type=kotlin.Nothing from='<get-test1>(): (String) -> String'
           GET_FIELD 'test1: (String) -> String' type=(kotlin.String) -> kotlin.String origin=null
   PROPERTY name:test2 type:kotlin.Any.(kotlin.Any) -> kotlin.Any visibility:public modality:FINAL flags:val
-    FIELD PROPERTY_BACKING_FIELD name:test2 type:kotlin.Any.(kotlin.Any) -> kotlin.Any visibility:public
+    FIELD PROPERTY_BACKING_FIELD name:test2 type:kotlin.Any.(kotlin.Any) -> kotlin.Any visibility:public flags:final
       EXPRESSION_BODY
         BLOCK type=kotlin.Any.(kotlin.Any) -> kotlin.Int origin=LAMBDA
           FUN LOCAL_FUNCTION_FOR_LAMBDA name:<anonymous> visibility:local modality:FINAL <> ($receiver:kotlin.Any, it:kotlin.Any) returnType:Int flags:
@@ -30,7 +30,7 @@ FILE fqName:<root> fileName:/lambdas.kt
         RETURN type=kotlin.Nothing from='<get-test2>(): Any.(Any) -> Any'
           GET_FIELD 'test2: Any.(Any) -> Any' type=kotlin.Any.(kotlin.Any) -> kotlin.Any origin=null
   PROPERTY name:test3 type:(kotlin.Int, kotlin.Int) -> kotlin.Unit visibility:public modality:FINAL flags:val
-    FIELD PROPERTY_BACKING_FIELD name:test3 type:(kotlin.Int, kotlin.Int) -> kotlin.Unit visibility:public
+    FIELD PROPERTY_BACKING_FIELD name:test3 type:(kotlin.Int, kotlin.Int) -> kotlin.Unit visibility:public flags:final
       EXPRESSION_BODY
         BLOCK type=(kotlin.Int, kotlin.Int) -> kotlin.Unit origin=LAMBDA
           FUN LOCAL_FUNCTION_FOR_LAMBDA name:<anonymous> visibility:local modality:FINAL <> (i:kotlin.Int, j:kotlin.Int) returnType:Unit flags:
@@ -45,7 +45,7 @@ FILE fqName:<root> fileName:/lambdas.kt
         RETURN type=kotlin.Nothing from='<get-test3>(): (Int, Int) -> Unit'
           GET_FIELD 'test3: (Int, Int) -> Unit' type=(kotlin.Int, kotlin.Int) -> kotlin.Unit origin=null
   PROPERTY name:test4 type:(kotlin.Int, kotlin.Int) -> kotlin.Unit visibility:public modality:FINAL flags:val
-    FIELD PROPERTY_BACKING_FIELD name:test4 type:(kotlin.Int, kotlin.Int) -> kotlin.Unit visibility:public
+    FIELD PROPERTY_BACKING_FIELD name:test4 type:(kotlin.Int, kotlin.Int) -> kotlin.Unit visibility:public flags:final
       EXPRESSION_BODY
         BLOCK type=(kotlin.Int, kotlin.Int) -> kotlin.Unit origin=ANONYMOUS_FUNCTION
           FUN name:<no name provided> visibility:local modality:FINAL <> (i:kotlin.Int, j:kotlin.Int) returnType:Unit flags:
diff --git a/compiler/testData/ir/irText/declarations/primaryCtorDefaultArguments.txt b/compiler/testData/ir/irText/declarations/primaryCtorDefaultArguments.txt
index ea16f581ed4..905537d645a 100644
--- a/compiler/testData/ir/irText/declarations/primaryCtorDefaultArguments.txt
+++ b/compiler/testData/ir/irText/declarations/primaryCtorDefaultArguments.txt
@@ -11,7 +11,7 @@ FILE fqName:<root> fileName:/primaryCtorDefaultArguments.kt
         DELEGATING_CONSTRUCTOR_CALL 'constructor Any()'
         INSTANCE_INITIALIZER_CALL classDescriptor='Test'
     PROPERTY name:x type:kotlin.Int visibility:public modality:FINAL flags:val
-      FIELD PROPERTY_BACKING_FIELD name:x type:kotlin.Int visibility:public
+      FIELD PROPERTY_BACKING_FIELD name:x type:kotlin.Int visibility:public flags:final
         EXPRESSION_BODY
           GET_VAR 'value-parameter x: Int = ...' type=kotlin.Int origin=INITIALIZE_PROPERTY_FROM_PARAMETER
       FUN DEFAULT_PROPERTY_ACCESSOR name:<get-x> visibility:public modality:FINAL <> ($this:Test) returnType:Int flags:
diff --git a/compiler/testData/ir/irText/declarations/primaryCtorProperties.txt b/compiler/testData/ir/irText/declarations/primaryCtorProperties.txt
index 5a3578bdeac..02946eb807d 100644
--- a/compiler/testData/ir/irText/declarations/primaryCtorProperties.txt
+++ b/compiler/testData/ir/irText/declarations/primaryCtorProperties.txt
@@ -10,7 +10,7 @@ FILE fqName:<root> fileName:/primaryCtorProperties.kt
         DELEGATING_CONSTRUCTOR_CALL 'constructor Any()'
         INSTANCE_INITIALIZER_CALL classDescriptor='C'
     PROPERTY name:test1 type:kotlin.Int visibility:public modality:FINAL flags:val
-      FIELD PROPERTY_BACKING_FIELD name:test1 type:kotlin.Int visibility:public
+      FIELD PROPERTY_BACKING_FIELD name:test1 type:kotlin.Int visibility:public flags:final
         EXPRESSION_BODY
           GET_VAR 'value-parameter test1: Int' type=kotlin.Int origin=INITIALIZE_PROPERTY_FROM_PARAMETER
       FUN DEFAULT_PROPERTY_ACCESSOR name:<get-test1> visibility:public modality:FINAL <> ($this:C) returnType:Int flags:
@@ -20,7 +20,7 @@ FILE fqName:<root> fileName:/primaryCtorProperties.kt
             GET_FIELD 'test1: Int' type=kotlin.Int origin=null
               receiver: GET_VAR 'this@C: C' type=C origin=null
     PROPERTY name:test2 type:kotlin.Int visibility:public modality:FINAL flags:var
-      FIELD PROPERTY_BACKING_FIELD name:test2 type:kotlin.Int visibility:public
+      FIELD PROPERTY_BACKING_FIELD name:test2 type:kotlin.Int visibility:public flags:final
         EXPRESSION_BODY
           GET_VAR 'value-parameter test2: Int' type=kotlin.Int origin=INITIALIZE_PROPERTY_FROM_PARAMETER
       FUN DEFAULT_PROPERTY_ACCESSOR name:<get-test2> visibility:public modality:FINAL <> ($this:C) returnType:Int flags:
diff --git a/compiler/testData/ir/irText/declarations/provideDelegate/differentReceivers.txt b/compiler/testData/ir/irText/declarations/provideDelegate/differentReceivers.txt
index ba04000f8a3..3d4520afc86 100644
--- a/compiler/testData/ir/irText/declarations/provideDelegate/differentReceivers.txt
+++ b/compiler/testData/ir/irText/declarations/provideDelegate/differentReceivers.txt
@@ -9,7 +9,7 @@ FILE fqName:<root> fileName:/differentReceivers.kt
         DELEGATING_CONSTRUCTOR_CALL 'constructor Any()'
         INSTANCE_INITIALIZER_CALL classDescriptor='MyClass'
     PROPERTY name:value type:kotlin.String visibility:public modality:FINAL flags:val
-      FIELD PROPERTY_BACKING_FIELD name:value type:kotlin.String visibility:public
+      FIELD PROPERTY_BACKING_FIELD name:value type:kotlin.String visibility:public flags:final
         EXPRESSION_BODY
           GET_VAR 'value-parameter value: String' type=kotlin.String origin=INITIALIZE_PROPERTY_FROM_PARAMETER
       FUN DEFAULT_PROPERTY_ACCESSOR name:<get-value> visibility:public modality:FINAL <> ($this:MyClass) returnType:String flags:
@@ -47,7 +47,7 @@ FILE fqName:<root> fileName:/differentReceivers.kt
       RETURN type=kotlin.Nothing from='getValue(Any?, Any) on String: String'
         GET_VAR 'this@getValue: String' type=kotlin.String origin=null
   PROPERTY name:testO type:kotlin.String visibility:public modality:FINAL flags:delegatedmval
-    FIELD DELEGATE name:testO$delegate type:kotlin.String visibility:private
+    FIELD DELEGATE name:testO$delegate type:kotlin.String visibility:private flags:final
       EXPRESSION_BODY
         CALL 'provideDelegate(Any?, Any) on MyClass: String' type=kotlin.String origin=null
           $receiver: CALL 'constructor MyClass(String)' type=MyClass origin=null
@@ -62,7 +62,7 @@ FILE fqName:<root> fileName:/differentReceivers.kt
             receiver: CONST Null type=kotlin.Nothing? value=null
             p: PROPERTY_REFERENCE 'testO: String' field=null getter='<get-testO>(): String' setter=null type=kotlin.reflect.KProperty0<kotlin.String> origin=PROPERTY_REFERENCE_FOR_DELEGATE
   PROPERTY name:testK type:kotlin.String visibility:public modality:FINAL flags:delegatedmval
-    FIELD DELEGATE name:testK$delegate type:kotlin.String visibility:private
+    FIELD DELEGATE name:testK$delegate type:kotlin.String visibility:private flags:final
       EXPRESSION_BODY
         CONST String type=kotlin.String value=K
     FUN DELEGATED_PROPERTY_ACCESSOR name:<get-testK> visibility:public modality:FINAL <> () returnType:String flags:
@@ -73,7 +73,7 @@ FILE fqName:<root> fileName:/differentReceivers.kt
             receiver: CONST Null type=kotlin.Nothing? value=null
             p: PROPERTY_REFERENCE 'testK: String' field=null getter='<get-testK>(): String' setter=null type=kotlin.reflect.KProperty0<kotlin.String> origin=PROPERTY_REFERENCE_FOR_DELEGATE
   PROPERTY name:testOK type:kotlin.String visibility:public modality:FINAL flags:val
-    FIELD PROPERTY_BACKING_FIELD name:testOK type:kotlin.String visibility:public
+    FIELD PROPERTY_BACKING_FIELD name:testOK type:kotlin.String visibility:public flags:final
       EXPRESSION_BODY
         CALL 'plus(Any?): String' type=kotlin.String origin=PLUS
           $this: CALL '<get-testO>(): String' type=kotlin.String origin=GET_PROPERTY
diff --git a/compiler/testData/ir/irText/declarations/provideDelegate/local.txt b/compiler/testData/ir/irText/declarations/provideDelegate/local.txt
index b1e775738e1..3247ddf010a 100644
--- a/compiler/testData/ir/irText/declarations/provideDelegate/local.txt
+++ b/compiler/testData/ir/irText/declarations/provideDelegate/local.txt
@@ -9,7 +9,7 @@ FILE fqName:<root> fileName:/local.kt
         DELEGATING_CONSTRUCTOR_CALL 'constructor Any()'
         INSTANCE_INITIALIZER_CALL classDescriptor='Delegate'
     PROPERTY name:value type:kotlin.String visibility:public modality:FINAL flags:val
-      FIELD PROPERTY_BACKING_FIELD name:value type:kotlin.String visibility:public
+      FIELD PROPERTY_BACKING_FIELD name:value type:kotlin.String visibility:public flags:final
         EXPRESSION_BODY
           GET_VAR 'value-parameter value: String' type=kotlin.String origin=INITIALIZE_PROPERTY_FROM_PARAMETER
       FUN DEFAULT_PROPERTY_ACCESSOR name:<get-value> visibility:public modality:FINAL <> ($this:Delegate) returnType:String flags:
@@ -49,7 +49,7 @@ FILE fqName:<root> fileName:/local.kt
         DELEGATING_CONSTRUCTOR_CALL 'constructor Any()'
         INSTANCE_INITIALIZER_CALL classDescriptor='DelegateProvider'
     PROPERTY name:value type:kotlin.String visibility:public modality:FINAL flags:val
-      FIELD PROPERTY_BACKING_FIELD name:value type:kotlin.String visibility:public
+      FIELD PROPERTY_BACKING_FIELD name:value type:kotlin.String visibility:public flags:final
         EXPRESSION_BODY
           GET_VAR 'value-parameter value: String' type=kotlin.String origin=INITIALIZE_PROPERTY_FROM_PARAMETER
       FUN DEFAULT_PROPERTY_ACCESSOR name:<get-value> visibility:public modality:FINAL <> ($this:DelegateProvider) returnType:String flags:
diff --git a/compiler/testData/ir/irText/declarations/provideDelegate/localDifferentReceivers.txt b/compiler/testData/ir/irText/declarations/provideDelegate/localDifferentReceivers.txt
index ecaa1e0820c..9619e7ac3d0 100644
--- a/compiler/testData/ir/irText/declarations/provideDelegate/localDifferentReceivers.txt
+++ b/compiler/testData/ir/irText/declarations/provideDelegate/localDifferentReceivers.txt
@@ -9,7 +9,7 @@ FILE fqName:<root> fileName:/localDifferentReceivers.kt
         DELEGATING_CONSTRUCTOR_CALL 'constructor Any()'
         INSTANCE_INITIALIZER_CALL classDescriptor='MyClass'
     PROPERTY name:value type:kotlin.String visibility:public modality:FINAL flags:val
-      FIELD PROPERTY_BACKING_FIELD name:value type:kotlin.String visibility:public
+      FIELD PROPERTY_BACKING_FIELD name:value type:kotlin.String visibility:public flags:final
         EXPRESSION_BODY
           GET_VAR 'value-parameter value: String' type=kotlin.String origin=INITIALIZE_PROPERTY_FROM_PARAMETER
       FUN DEFAULT_PROPERTY_ACCESSOR name:<get-value> visibility:public modality:FINAL <> ($this:MyClass) returnType:String flags:
diff --git a/compiler/testData/ir/irText/declarations/provideDelegate/member.txt b/compiler/testData/ir/irText/declarations/provideDelegate/member.txt
index 777f3e14c56..71bc0c19e23 100644
--- a/compiler/testData/ir/irText/declarations/provideDelegate/member.txt
+++ b/compiler/testData/ir/irText/declarations/provideDelegate/member.txt
@@ -9,7 +9,7 @@ FILE fqName:<root> fileName:/member.kt
         DELEGATING_CONSTRUCTOR_CALL 'constructor Any()'
         INSTANCE_INITIALIZER_CALL classDescriptor='Delegate'
     PROPERTY name:value type:kotlin.String visibility:public modality:FINAL flags:val
-      FIELD PROPERTY_BACKING_FIELD name:value type:kotlin.String visibility:public
+      FIELD PROPERTY_BACKING_FIELD name:value type:kotlin.String visibility:public flags:final
         EXPRESSION_BODY
           GET_VAR 'value-parameter value: String' type=kotlin.String origin=INITIALIZE_PROPERTY_FROM_PARAMETER
       FUN DEFAULT_PROPERTY_ACCESSOR name:<get-value> visibility:public modality:FINAL <> ($this:Delegate) returnType:String flags:
@@ -49,7 +49,7 @@ FILE fqName:<root> fileName:/member.kt
         DELEGATING_CONSTRUCTOR_CALL 'constructor Any()'
         INSTANCE_INITIALIZER_CALL classDescriptor='DelegateProvider'
     PROPERTY name:value type:kotlin.String visibility:public modality:FINAL flags:val
-      FIELD PROPERTY_BACKING_FIELD name:value type:kotlin.String visibility:public
+      FIELD PROPERTY_BACKING_FIELD name:value type:kotlin.String visibility:public flags:final
         EXPRESSION_BODY
           GET_VAR 'value-parameter value: String' type=kotlin.String origin=INITIALIZE_PROPERTY_FROM_PARAMETER
       FUN DEFAULT_PROPERTY_ACCESSOR name:<get-value> visibility:public modality:FINAL <> ($this:DelegateProvider) returnType:String flags:
@@ -89,7 +89,7 @@ FILE fqName:<root> fileName:/member.kt
         DELEGATING_CONSTRUCTOR_CALL 'constructor Any()'
         INSTANCE_INITIALIZER_CALL classDescriptor='Host'
     PROPERTY name:testMember type:kotlin.String visibility:public modality:FINAL flags:delegatedmval
-      FIELD DELEGATE name:testMember$delegate type:Delegate visibility:private
+      FIELD DELEGATE name:testMember$delegate type:Delegate visibility:private flags:final
         EXPRESSION_BODY
           CALL 'provideDelegate(Any?, Any?): Delegate' type=Delegate origin=null
             $this: CALL 'constructor DelegateProvider(String)' type=DelegateProvider origin=null
diff --git a/compiler/testData/ir/irText/declarations/provideDelegate/memberExtension.txt b/compiler/testData/ir/irText/declarations/provideDelegate/memberExtension.txt
index 1030c1ddecc..47b356e852b 100644
--- a/compiler/testData/ir/irText/declarations/provideDelegate/memberExtension.txt
+++ b/compiler/testData/ir/irText/declarations/provideDelegate/memberExtension.txt
@@ -17,7 +17,7 @@ FILE fqName:<root> fileName:/memberExtension.kt
           DELEGATING_CONSTRUCTOR_CALL 'constructor Any()'
           INSTANCE_INITIALIZER_CALL classDescriptor='StringDelegate'
       PROPERTY name:s type:kotlin.String visibility:public modality:FINAL flags:val
-        FIELD PROPERTY_BACKING_FIELD name:s type:kotlin.String visibility:public
+        FIELD PROPERTY_BACKING_FIELD name:s type:kotlin.String visibility:public flags:final
           EXPRESSION_BODY
             GET_VAR 'value-parameter s: String' type=kotlin.String origin=INITIALIZE_PROPERTY_FROM_PARAMETER
         FUN DEFAULT_PROPERTY_ACCESSOR name:<get-s> visibility:public modality:FINAL <> ($this:Host.StringDelegate) returnType:String flags:
@@ -59,7 +59,7 @@ FILE fqName:<root> fileName:/memberExtension.kt
           CALL 'constructor StringDelegate(String)' type=Host.StringDelegate origin=null
             s: GET_VAR 'this@provideDelegate: String' type=kotlin.String origin=null
     PROPERTY name:plusK type:kotlin.String visibility:public modality:FINAL flags:delegatedmval
-      FIELD DELEGATE name:plusK$delegate type:Host.StringDelegate visibility:private
+      FIELD DELEGATE name:plusK$delegate type:Host.StringDelegate visibility:private flags:final
         EXPRESSION_BODY
           CALL 'provideDelegate(Any?, Any) on String: Host.StringDelegate' type=Host.StringDelegate origin=null
             $this: GET_VAR 'this@Host: Host' type=Host origin=null
@@ -77,7 +77,7 @@ FILE fqName:<root> fileName:/memberExtension.kt
               receiver: GET_VAR 'this@plusK: String' type=kotlin.String origin=null
               p: PROPERTY_REFERENCE 'plusK: String on String' field=null getter='<get-plusK>() on String: String' setter=null type=kotlin.reflect.KProperty2<kotlin.String, Host, kotlin.String> origin=PROPERTY_REFERENCE_FOR_DELEGATE
     PROPERTY name:ok type:kotlin.String visibility:public modality:FINAL flags:val
-      FIELD PROPERTY_BACKING_FIELD name:ok type:kotlin.String visibility:public
+      FIELD PROPERTY_BACKING_FIELD name:ok type:kotlin.String visibility:public flags:final
         EXPRESSION_BODY
           CALL '<get-plusK>() on String: String' type=kotlin.String origin=GET_PROPERTY
             $this: GET_VAR 'this@Host: Host' type=Host origin=null
diff --git a/compiler/testData/ir/irText/declarations/provideDelegate/topLevel.txt b/compiler/testData/ir/irText/declarations/provideDelegate/topLevel.txt
index fa0ca6392eb..465c09ea4ab 100644
--- a/compiler/testData/ir/irText/declarations/provideDelegate/topLevel.txt
+++ b/compiler/testData/ir/irText/declarations/provideDelegate/topLevel.txt
@@ -9,7 +9,7 @@ FILE fqName:<root> fileName:/topLevel.kt
         DELEGATING_CONSTRUCTOR_CALL 'constructor Any()'
         INSTANCE_INITIALIZER_CALL classDescriptor='Delegate'
     PROPERTY name:value type:kotlin.String visibility:public modality:FINAL flags:val
-      FIELD PROPERTY_BACKING_FIELD name:value type:kotlin.String visibility:public
+      FIELD PROPERTY_BACKING_FIELD name:value type:kotlin.String visibility:public flags:final
         EXPRESSION_BODY
           GET_VAR 'value-parameter value: String' type=kotlin.String origin=INITIALIZE_PROPERTY_FROM_PARAMETER
       FUN DEFAULT_PROPERTY_ACCESSOR name:<get-value> visibility:public modality:FINAL <> ($this:Delegate) returnType:String flags:
@@ -49,7 +49,7 @@ FILE fqName:<root> fileName:/topLevel.kt
         DELEGATING_CONSTRUCTOR_CALL 'constructor Any()'
         INSTANCE_INITIALIZER_CALL classDescriptor='DelegateProvider'
     PROPERTY name:value type:kotlin.String visibility:public modality:FINAL flags:val
-      FIELD PROPERTY_BACKING_FIELD name:value type:kotlin.String visibility:public
+      FIELD PROPERTY_BACKING_FIELD name:value type:kotlin.String visibility:public flags:final
         EXPRESSION_BODY
           GET_VAR 'value-parameter value: String' type=kotlin.String origin=INITIALIZE_PROPERTY_FROM_PARAMETER
       FUN DEFAULT_PROPERTY_ACCESSOR name:<get-value> visibility:public modality:FINAL <> ($this:DelegateProvider) returnType:String flags:
@@ -81,7 +81,7 @@ FILE fqName:<root> fileName:/topLevel.kt
         FUN IR_EXTERNAL_DECLARATION_STUB name:toString visibility:public modality:OPEN <> ($this:kotlin.Any) returnType:String flags:
       $this: VALUE_PARAMETER name:<this> type:kotlin.Any flags:
   PROPERTY name:testTopLevel type:kotlin.String visibility:public modality:FINAL flags:delegatedmval
-    FIELD DELEGATE name:testTopLevel$delegate type:Delegate visibility:private
+    FIELD DELEGATE name:testTopLevel$delegate type:Delegate visibility:private flags:final
       EXPRESSION_BODY
         CALL 'provideDelegate(Any?, Any?): Delegate' type=Delegate origin=null
           $this: CALL 'constructor DelegateProvider(String)' type=DelegateProvider origin=null
diff --git a/compiler/testData/ir/irText/errors/unresolvedReference.txt b/compiler/testData/ir/irText/errors/unresolvedReference.txt
index 7e9fc81f850..77de0f176a0 100644
--- a/compiler/testData/ir/irText/errors/unresolvedReference.txt
+++ b/compiler/testData/ir/irText/errors/unresolvedReference.txt
@@ -1,6 +1,6 @@
 FILE fqName:<root> fileName:/unresolvedReference.kt
   PROPERTY name:test1 type:[ERROR : Type for unresolved] visibility:public modality:FINAL flags:val
-    FIELD PROPERTY_BACKING_FIELD name:test1 type:[ERROR : Type for unresolved] visibility:public
+    FIELD PROPERTY_BACKING_FIELD name:test1 type:[ERROR : Type for unresolved] visibility:public flags:final
       EXPRESSION_BODY
         ERROR_CALL '' type=[ERROR : ]
     FUN DEFAULT_PROPERTY_ACCESSOR name:<get-test1> visibility:public modality:FINAL <> () returnType:[ERROR : Type for unresolved] flags:
@@ -8,7 +8,7 @@ FILE fqName:<root> fileName:/unresolvedReference.kt
         RETURN type=kotlin.Nothing from='<get-test1>(): [ERROR : Type for unresolved]'
           GET_FIELD 'test1: [ERROR : Type for unresolved]' type=[ERROR : Type for unresolved] origin=null
   PROPERTY name:test2 type:[ERROR : Unresolved] visibility:public modality:FINAL flags:val
-    FIELD PROPERTY_BACKING_FIELD name:test2 type:[ERROR : Unresolved] visibility:public
+    FIELD PROPERTY_BACKING_FIELD name:test2 type:[ERROR : Unresolved] visibility:public flags:final
       EXPRESSION_BODY
         ERROR_CALL '' type=[ERROR : ]
     FUN DEFAULT_PROPERTY_ACCESSOR name:<get-test2> visibility:public modality:FINAL <> () returnType:[ERROR : Unresolved] flags:
@@ -16,7 +16,7 @@ FILE fqName:<root> fileName:/unresolvedReference.kt
         RETURN type=kotlin.Nothing from='<get-test2>(): [ERROR : Unresolved]'
           GET_FIELD 'test2: [ERROR : Unresolved]' type=[ERROR : Unresolved] origin=null
   PROPERTY name:test3 type:[ERROR : Type for 42.unresolved(56)] visibility:public modality:FINAL flags:val
-    FIELD PROPERTY_BACKING_FIELD name:test3 type:[ERROR : Type for 42.unresolved(56)] visibility:public
+    FIELD PROPERTY_BACKING_FIELD name:test3 type:[ERROR : Type for 42.unresolved(56)] visibility:public flags:final
       EXPRESSION_BODY
         ERROR_CALL '' type=[ERROR : ]
           receiver: CONST Int type=kotlin.Int value=42
@@ -26,7 +26,7 @@ FILE fqName:<root> fileName:/unresolvedReference.kt
         RETURN type=kotlin.Nothing from='<get-test3>(): [ERROR : Type for 42.unresolved(56)]'
           GET_FIELD 'test3: [ERROR : Type for 42.unresolved(56)]' type=[ERROR : Type for 42.unresolved(56)] origin=null
   PROPERTY name:test4 type:[ERROR : Type for 42 *] visibility:public modality:FINAL flags:val
-    FIELD PROPERTY_BACKING_FIELD name:test4 type:[ERROR : Type for 42 *] visibility:public
+    FIELD PROPERTY_BACKING_FIELD name:test4 type:[ERROR : Type for 42 *] visibility:public flags:final
       EXPRESSION_BODY
         ERROR_EXPR '' type=[ERROR : ]
     FUN DEFAULT_PROPERTY_ACCESSOR name:<get-test4> visibility:public modality:FINAL <> () returnType:[ERROR : Type for 42 *] flags:
diff --git a/compiler/testData/ir/irText/expressions/arrayAccess.txt b/compiler/testData/ir/irText/expressions/arrayAccess.txt
index ed6fed0fdce..3f8f5ae9ebf 100644
--- a/compiler/testData/ir/irText/expressions/arrayAccess.txt
+++ b/compiler/testData/ir/irText/expressions/arrayAccess.txt
@@ -1,6 +1,6 @@
 FILE fqName:<root> fileName:/arrayAccess.kt
   PROPERTY name:p type:kotlin.Int visibility:public modality:FINAL flags:val
-    FIELD PROPERTY_BACKING_FIELD name:p type:kotlin.Int visibility:public
+    FIELD PROPERTY_BACKING_FIELD name:p type:kotlin.Int visibility:public flags:final
       EXPRESSION_BODY
         CONST Int type=kotlin.Int value=0
     FUN DEFAULT_PROPERTY_ACCESSOR name:<get-p> visibility:public modality:FINAL <> () returnType:Int flags:
diff --git a/compiler/testData/ir/irText/expressions/arrayAugmentedAssignment1.txt b/compiler/testData/ir/irText/expressions/arrayAugmentedAssignment1.txt
index e8f0ca75a5a..d3e599b01f4 100644
--- a/compiler/testData/ir/irText/expressions/arrayAugmentedAssignment1.txt
+++ b/compiler/testData/ir/irText/expressions/arrayAugmentedAssignment1.txt
@@ -21,7 +21,7 @@ FILE fqName:<root> fileName:/arrayAugmentedAssignment1.kt
         DELEGATING_CONSTRUCTOR_CALL 'constructor Any()'
         INSTANCE_INITIALIZER_CALL classDescriptor='C'
     PROPERTY name:x type:kotlin.IntArray visibility:public modality:FINAL flags:val
-      FIELD PROPERTY_BACKING_FIELD name:x type:kotlin.IntArray visibility:public
+      FIELD PROPERTY_BACKING_FIELD name:x type:kotlin.IntArray visibility:public flags:final
         EXPRESSION_BODY
           GET_VAR 'value-parameter x: IntArray' type=kotlin.IntArray origin=INITIALIZE_PROPERTY_FROM_PARAMETER
       FUN DEFAULT_PROPERTY_ACCESSOR name:<get-x> visibility:public modality:FINAL <> ($this:C) returnType:IntArray flags:
diff --git a/compiler/testData/ir/irText/expressions/assignments.txt b/compiler/testData/ir/irText/expressions/assignments.txt
index b49e5c47841..1a9f521ccd0 100644
--- a/compiler/testData/ir/irText/expressions/assignments.txt
+++ b/compiler/testData/ir/irText/expressions/assignments.txt
@@ -9,7 +9,7 @@ FILE fqName:<root> fileName:/assignments.kt
         DELEGATING_CONSTRUCTOR_CALL 'constructor Any()'
         INSTANCE_INITIALIZER_CALL classDescriptor='Ref'
     PROPERTY name:x type:kotlin.Int visibility:public modality:FINAL flags:var
-      FIELD PROPERTY_BACKING_FIELD name:x type:kotlin.Int visibility:public
+      FIELD PROPERTY_BACKING_FIELD name:x type:kotlin.Int visibility:public flags:final
         EXPRESSION_BODY
           GET_VAR 'value-parameter x: Int' type=kotlin.Int origin=INITIALIZE_PROPERTY_FROM_PARAMETER
       FUN DEFAULT_PROPERTY_ACCESSOR name:<get-x> visibility:public modality:FINAL <> ($this:Ref) returnType:Int flags:
diff --git a/compiler/testData/ir/irText/expressions/augmentedAssignment1.txt b/compiler/testData/ir/irText/expressions/augmentedAssignment1.txt
index 421915a9a74..8d0f4e3ed30 100644
--- a/compiler/testData/ir/irText/expressions/augmentedAssignment1.txt
+++ b/compiler/testData/ir/irText/expressions/augmentedAssignment1.txt
@@ -1,6 +1,6 @@
 FILE fqName:<root> fileName:/augmentedAssignment1.kt
   PROPERTY name:p type:kotlin.Int visibility:public modality:FINAL flags:var
-    FIELD PROPERTY_BACKING_FIELD name:p type:kotlin.Int visibility:public
+    FIELD PROPERTY_BACKING_FIELD name:p type:kotlin.Int visibility:public flags:final
       EXPRESSION_BODY
         CONST Int type=kotlin.Int value=0
     FUN DEFAULT_PROPERTY_ACCESSOR name:<get-p> visibility:public modality:FINAL <> () returnType:Int flags:
diff --git a/compiler/testData/ir/irText/expressions/augmentedAssignment2.txt b/compiler/testData/ir/irText/expressions/augmentedAssignment2.txt
index 7a904e339c1..c21c64693e3 100644
--- a/compiler/testData/ir/irText/expressions/augmentedAssignment2.txt
+++ b/compiler/testData/ir/irText/expressions/augmentedAssignment2.txt
@@ -41,7 +41,7 @@ FILE fqName:<root> fileName:/augmentedAssignment2.kt
     VALUE_PARAMETER name:s index:0 type:kotlin.String flags:
     BLOCK_BODY
   PROPERTY name:p type:A visibility:public modality:FINAL flags:val
-    FIELD PROPERTY_BACKING_FIELD name:p type:A visibility:public
+    FIELD PROPERTY_BACKING_FIELD name:p type:A visibility:public flags:final
       EXPRESSION_BODY
         CALL 'constructor A()' type=A origin=null
     FUN DEFAULT_PROPERTY_ACCESSOR name:<get-p> visibility:public modality:FINAL <> () returnType:A flags:
diff --git a/compiler/testData/ir/irText/expressions/boundCallableReferences.txt b/compiler/testData/ir/irText/expressions/boundCallableReferences.txt
index d9f76678ea0..7833178d9b2 100644
--- a/compiler/testData/ir/irText/expressions/boundCallableReferences.txt
+++ b/compiler/testData/ir/irText/expressions/boundCallableReferences.txt
@@ -11,7 +11,7 @@ FILE fqName:<root> fileName:/boundCallableReferences.kt
       $this: VALUE_PARAMETER name:<this> type:A flags:
       BLOCK_BODY
     PROPERTY name:bar type:kotlin.Int visibility:public modality:FINAL flags:val
-      FIELD PROPERTY_BACKING_FIELD name:bar type:kotlin.Int visibility:public
+      FIELD PROPERTY_BACKING_FIELD name:bar type:kotlin.Int visibility:public flags:final
         EXPRESSION_BODY
           CONST Int type=kotlin.Int value=0
       FUN DEFAULT_PROPERTY_ACCESSOR name:<get-bar> visibility:public modality:FINAL <> ($this:A) returnType:Int flags:
@@ -37,7 +37,7 @@ FILE fqName:<root> fileName:/boundCallableReferences.kt
     $receiver: VALUE_PARAMETER name:<this> type:A flags:
     BLOCK_BODY
   PROPERTY name:test1 type:kotlin.reflect.KFunction0<kotlin.Unit> visibility:public modality:FINAL flags:val
-    FIELD PROPERTY_BACKING_FIELD name:test1 type:kotlin.reflect.KFunction0<kotlin.Unit> visibility:public
+    FIELD PROPERTY_BACKING_FIELD name:test1 type:kotlin.reflect.KFunction0<kotlin.Unit> visibility:public flags:final
       EXPRESSION_BODY
         FUNCTION_REFERENCE 'foo(): Unit' type=kotlin.reflect.KFunction0<kotlin.Unit> origin=null
           $this: CALL 'constructor A()' type=A origin=null
@@ -46,7 +46,7 @@ FILE fqName:<root> fileName:/boundCallableReferences.kt
         RETURN type=kotlin.Nothing from='<get-test1>(): KFunction0<Unit>'
           GET_FIELD 'test1: KFunction0<Unit>' type=kotlin.reflect.KFunction0<kotlin.Unit> origin=null
   PROPERTY name:test2 type:kotlin.reflect.KProperty0<kotlin.Int> visibility:public modality:FINAL flags:val
-    FIELD PROPERTY_BACKING_FIELD name:test2 type:kotlin.reflect.KProperty0<kotlin.Int> visibility:public
+    FIELD PROPERTY_BACKING_FIELD name:test2 type:kotlin.reflect.KProperty0<kotlin.Int> visibility:public flags:final
       EXPRESSION_BODY
         PROPERTY_REFERENCE 'bar: Int' field=null getter='<get-bar>(): Int' setter=null type=kotlin.reflect.KProperty0<kotlin.Int> origin=null
           $this: CALL 'constructor A()' type=A origin=null
@@ -55,7 +55,7 @@ FILE fqName:<root> fileName:/boundCallableReferences.kt
         RETURN type=kotlin.Nothing from='<get-test2>(): KProperty0<Int>'
           GET_FIELD 'test2: KProperty0<Int>' type=kotlin.reflect.KProperty0<kotlin.Int> origin=null
   PROPERTY name:test3 type:kotlin.reflect.KFunction0<kotlin.Unit> visibility:public modality:FINAL flags:val
-    FIELD PROPERTY_BACKING_FIELD name:test3 type:kotlin.reflect.KFunction0<kotlin.Unit> visibility:public
+    FIELD PROPERTY_BACKING_FIELD name:test3 type:kotlin.reflect.KFunction0<kotlin.Unit> visibility:public flags:final
       EXPRESSION_BODY
         FUNCTION_REFERENCE 'qux() on A: Unit' type=kotlin.reflect.KFunction0<kotlin.Unit> origin=null
           $receiver: CALL 'constructor A()' type=A origin=null
diff --git a/compiler/testData/ir/irText/expressions/callableRefToGenericMember.txt b/compiler/testData/ir/irText/expressions/callableRefToGenericMember.txt
index c90cf1749b4..5ebbca31e35 100644
--- a/compiler/testData/ir/irText/expressions/callableRefToGenericMember.txt
+++ b/compiler/testData/ir/irText/expressions/callableRefToGenericMember.txt
@@ -14,7 +14,7 @@ FILE fqName:<root> fileName:/callableRefToGenericMember.kt
       $this: VALUE_PARAMETER name:<this> type:A<T> flags:
       BLOCK_BODY
     PROPERTY name:bar type:kotlin.Int visibility:public modality:FINAL flags:val
-      FIELD PROPERTY_BACKING_FIELD name:bar type:kotlin.Int visibility:public
+      FIELD PROPERTY_BACKING_FIELD name:bar type:kotlin.Int visibility:public flags:final
         EXPRESSION_BODY
           CONST Int type=kotlin.Int value=42
       FUN DEFAULT_PROPERTY_ACCESSOR name:<get-bar> visibility:public modality:FINAL <> ($this:A<T>) returnType:Int flags:
@@ -37,7 +37,7 @@ FILE fqName:<root> fileName:/callableRefToGenericMember.kt
         FUN IR_EXTERNAL_DECLARATION_STUB name:toString visibility:public modality:OPEN <> ($this:kotlin.Any) returnType:String flags:
       $this: VALUE_PARAMETER name:<this> type:kotlin.Any flags:
   PROPERTY name:test1 type:kotlin.reflect.KFunction1<A<kotlin.String>, kotlin.Unit> visibility:public modality:FINAL flags:val
-    FIELD PROPERTY_BACKING_FIELD name:test1 type:kotlin.reflect.KFunction1<A<kotlin.String>, kotlin.Unit> visibility:public
+    FIELD PROPERTY_BACKING_FIELD name:test1 type:kotlin.reflect.KFunction1<A<kotlin.String>, kotlin.Unit> visibility:public flags:final
       EXPRESSION_BODY
         FUNCTION_REFERENCE 'foo(): Unit' type=kotlin.reflect.KFunction1<A<kotlin.String>, kotlin.Unit> origin=null
     FUN DEFAULT_PROPERTY_ACCESSOR name:<get-test1> visibility:public modality:FINAL <> () returnType:KFunction1<A<String>, Unit> flags:
@@ -45,7 +45,7 @@ FILE fqName:<root> fileName:/callableRefToGenericMember.kt
         RETURN type=kotlin.Nothing from='<get-test1>(): KFunction1<A<String>, Unit>'
           GET_FIELD 'test1: KFunction1<A<String>, Unit>' type=kotlin.reflect.KFunction1<A<kotlin.String>, kotlin.Unit> origin=null
   PROPERTY name:test2 type:kotlin.reflect.KProperty1<A<kotlin.String>, kotlin.Int> visibility:public modality:FINAL flags:val
-    FIELD PROPERTY_BACKING_FIELD name:test2 type:kotlin.reflect.KProperty1<A<kotlin.String>, kotlin.Int> visibility:public
+    FIELD PROPERTY_BACKING_FIELD name:test2 type:kotlin.reflect.KProperty1<A<kotlin.String>, kotlin.Int> visibility:public flags:final
       EXPRESSION_BODY
         PROPERTY_REFERENCE 'bar: Int' field=null getter='<get-bar>(): Int' setter=null type=kotlin.reflect.KProperty1<A<kotlin.String>, kotlin.Int> origin=null
     FUN DEFAULT_PROPERTY_ACCESSOR name:<get-test2> visibility:public modality:FINAL <> () returnType:KProperty1<A<String>, Int> flags:
diff --git a/compiler/testData/ir/irText/expressions/callableReferenceToImportedFromObject.txt b/compiler/testData/ir/irText/expressions/callableReferenceToImportedFromObject.txt
index c49b853cb0f..8c35e5d7778 100644
--- a/compiler/testData/ir/irText/expressions/callableReferenceToImportedFromObject.txt
+++ b/compiler/testData/ir/irText/expressions/callableReferenceToImportedFromObject.txt
@@ -8,7 +8,7 @@ FILE fqName:test fileName:/callableReferenceToImportedFromObject.kt
         DELEGATING_CONSTRUCTOR_CALL 'constructor Any()'
         INSTANCE_INITIALIZER_CALL classDescriptor='Foo'
     PROPERTY name:a type:kotlin.String visibility:public modality:FINAL flags:val
-      FIELD PROPERTY_BACKING_FIELD name:a type:kotlin.String visibility:public
+      FIELD PROPERTY_BACKING_FIELD name:a type:kotlin.String visibility:public flags:final
         EXPRESSION_BODY
           CONST String type=kotlin.String value=
       FUN DEFAULT_PROPERTY_ACCESSOR name:<get-a> visibility:public modality:FINAL <> ($this:test.Foo) returnType:String flags:
@@ -36,7 +36,7 @@ FILE fqName:test fileName:/callableReferenceToImportedFromObject.kt
         FUN IR_EXTERNAL_DECLARATION_STUB name:toString visibility:public modality:OPEN <> ($this:kotlin.Any) returnType:String flags:
       $this: VALUE_PARAMETER name:<this> type:kotlin.Any flags:
   PROPERTY name:test1 type:kotlin.reflect.KProperty0<kotlin.String> visibility:public modality:FINAL flags:val
-    FIELD PROPERTY_BACKING_FIELD name:test1 type:kotlin.reflect.KProperty0<kotlin.String> visibility:public
+    FIELD PROPERTY_BACKING_FIELD name:test1 type:kotlin.reflect.KProperty0<kotlin.String> visibility:public flags:final
       EXPRESSION_BODY
         PROPERTY_REFERENCE 'a: String' field=null getter='<get-a>(): String' setter=null type=kotlin.reflect.KProperty0<kotlin.String> origin=null
           $this: GET_OBJECT 'Foo' type=test.Foo
@@ -45,7 +45,7 @@ FILE fqName:test fileName:/callableReferenceToImportedFromObject.kt
         RETURN type=kotlin.Nothing from='<get-test1>(): KProperty0<String>'
           GET_FIELD 'test1: KProperty0<String>' type=kotlin.reflect.KProperty0<kotlin.String> origin=null
   PROPERTY name:test1a type:kotlin.reflect.KProperty0<kotlin.String> visibility:public modality:FINAL flags:val
-    FIELD PROPERTY_BACKING_FIELD name:test1a type:kotlin.reflect.KProperty0<kotlin.String> visibility:public
+    FIELD PROPERTY_BACKING_FIELD name:test1a type:kotlin.reflect.KProperty0<kotlin.String> visibility:public flags:final
       EXPRESSION_BODY
         PROPERTY_REFERENCE 'a: String' field=null getter='<get-a>(): String' setter=null type=kotlin.reflect.KProperty0<kotlin.String> origin=null
           $this: GET_OBJECT 'Foo' type=test.Foo
@@ -54,7 +54,7 @@ FILE fqName:test fileName:/callableReferenceToImportedFromObject.kt
         RETURN type=kotlin.Nothing from='<get-test1a>(): KProperty0<String>'
           GET_FIELD 'test1a: KProperty0<String>' type=kotlin.reflect.KProperty0<kotlin.String> origin=null
   PROPERTY name:test2 type:kotlin.reflect.KFunction0<kotlin.String> visibility:public modality:FINAL flags:val
-    FIELD PROPERTY_BACKING_FIELD name:test2 type:kotlin.reflect.KFunction0<kotlin.String> visibility:public
+    FIELD PROPERTY_BACKING_FIELD name:test2 type:kotlin.reflect.KFunction0<kotlin.String> visibility:public flags:final
       EXPRESSION_BODY
         FUNCTION_REFERENCE 'foo(): String' type=kotlin.reflect.KFunction0<kotlin.String> origin=null
           $this: GET_OBJECT 'Foo' type=test.Foo
@@ -63,7 +63,7 @@ FILE fqName:test fileName:/callableReferenceToImportedFromObject.kt
         RETURN type=kotlin.Nothing from='<get-test2>(): KFunction0<String>'
           GET_FIELD 'test2: KFunction0<String>' type=kotlin.reflect.KFunction0<kotlin.String> origin=null
   PROPERTY name:test2a type:kotlin.reflect.KFunction0<kotlin.String> visibility:public modality:FINAL flags:val
-    FIELD PROPERTY_BACKING_FIELD name:test2a type:kotlin.reflect.KFunction0<kotlin.String> visibility:public
+    FIELD PROPERTY_BACKING_FIELD name:test2a type:kotlin.reflect.KFunction0<kotlin.String> visibility:public flags:final
       EXPRESSION_BODY
         FUNCTION_REFERENCE 'foo(): String' type=kotlin.reflect.KFunction0<kotlin.String> origin=null
           $this: GET_OBJECT 'Foo' type=test.Foo
diff --git a/compiler/testData/ir/irText/expressions/coercionToUnit.txt b/compiler/testData/ir/irText/expressions/coercionToUnit.txt
index 37b9ff20a6a..64b6d583047 100644
--- a/compiler/testData/ir/irText/expressions/coercionToUnit.txt
+++ b/compiler/testData/ir/irText/expressions/coercionToUnit.txt
@@ -1,6 +1,6 @@
 FILE fqName:<root> fileName:/coercionToUnit.kt
   PROPERTY name:test1 type:() -> kotlin.Unit visibility:public modality:FINAL flags:val
-    FIELD PROPERTY_BACKING_FIELD name:test1 type:() -> kotlin.Unit visibility:public
+    FIELD PROPERTY_BACKING_FIELD name:test1 type:() -> kotlin.Unit visibility:public flags:final
       EXPRESSION_BODY
         BLOCK type=() -> kotlin.Unit origin=LAMBDA
           FUN LOCAL_FUNCTION_FOR_LAMBDA name:<anonymous> visibility:local modality:FINAL <> () returnType:Unit flags:
diff --git a/compiler/testData/ir/irText/expressions/complexAugmentedAssignment.txt b/compiler/testData/ir/irText/expressions/complexAugmentedAssignment.txt
index 960d5742284..b1d9ea172d1 100644
--- a/compiler/testData/ir/irText/expressions/complexAugmentedAssignment.txt
+++ b/compiler/testData/ir/irText/expressions/complexAugmentedAssignment.txt
@@ -8,7 +8,7 @@ FILE fqName:<root> fileName:/complexAugmentedAssignment.kt
         DELEGATING_CONSTRUCTOR_CALL 'constructor Any()'
         INSTANCE_INITIALIZER_CALL classDescriptor='X1'
     PROPERTY name:x1 type:kotlin.Int visibility:public modality:FINAL flags:var
-      FIELD PROPERTY_BACKING_FIELD name:x1 type:kotlin.Int visibility:public
+      FIELD PROPERTY_BACKING_FIELD name:x1 type:kotlin.Int visibility:public flags:final
         EXPRESSION_BODY
           CONST Int type=kotlin.Int value=0
       FUN DEFAULT_PROPERTY_ACCESSOR name:<get-x1> visibility:public modality:FINAL <> ($this:X1) returnType:Int flags:
@@ -33,7 +33,7 @@ FILE fqName:<root> fileName:/complexAugmentedAssignment.kt
           DELEGATING_CONSTRUCTOR_CALL 'constructor Any()'
           INSTANCE_INITIALIZER_CALL classDescriptor='X2'
       PROPERTY name:x2 type:kotlin.Int visibility:public modality:FINAL flags:var
-        FIELD PROPERTY_BACKING_FIELD name:x2 type:kotlin.Int visibility:public
+        FIELD PROPERTY_BACKING_FIELD name:x2 type:kotlin.Int visibility:public flags:final
           EXPRESSION_BODY
             CONST Int type=kotlin.Int value=0
         FUN DEFAULT_PROPERTY_ACCESSOR name:<get-x2> visibility:public modality:FINAL <> ($this:X1.X2) returnType:Int flags:
@@ -58,7 +58,7 @@ FILE fqName:<root> fileName:/complexAugmentedAssignment.kt
             DELEGATING_CONSTRUCTOR_CALL 'constructor Any()'
             INSTANCE_INITIALIZER_CALL classDescriptor='X3'
         PROPERTY name:x3 type:kotlin.Int visibility:public modality:FINAL flags:var
-          FIELD PROPERTY_BACKING_FIELD name:x3 type:kotlin.Int visibility:public
+          FIELD PROPERTY_BACKING_FIELD name:x3 type:kotlin.Int visibility:public flags:final
             EXPRESSION_BODY
               CONST Int type=kotlin.Int value=0
           FUN DEFAULT_PROPERTY_ACCESSOR name:<get-x3> visibility:public modality:FINAL <> ($this:X1.X2.X3) returnType:Int flags:
@@ -197,7 +197,7 @@ FILE fqName:<root> fileName:/complexAugmentedAssignment.kt
         DELEGATING_CONSTRUCTOR_CALL 'constructor Any()'
         INSTANCE_INITIALIZER_CALL classDescriptor='B'
     PROPERTY name:s type:kotlin.Int visibility:public modality:FINAL flags:var
-      FIELD PROPERTY_BACKING_FIELD name:s type:kotlin.Int visibility:public
+      FIELD PROPERTY_BACKING_FIELD name:s type:kotlin.Int visibility:public flags:final
         EXPRESSION_BODY
           GET_VAR 'value-parameter s: Int = ...' type=kotlin.Int origin=INITIALIZE_PROPERTY_FROM_PARAMETER
       FUN DEFAULT_PROPERTY_ACCESSOR name:<get-s> visibility:public modality:FINAL <> ($this:B) returnType:Int flags:
diff --git a/compiler/testData/ir/irText/expressions/contructorCall.txt b/compiler/testData/ir/irText/expressions/contructorCall.txt
index f33ac975e35..355a7273379 100644
--- a/compiler/testData/ir/irText/expressions/contructorCall.txt
+++ b/compiler/testData/ir/irText/expressions/contructorCall.txt
@@ -21,7 +21,7 @@ FILE fqName:<root> fileName:/contructorCall.kt
         FUN IR_EXTERNAL_DECLARATION_STUB name:toString visibility:public modality:OPEN <> ($this:kotlin.Any) returnType:String flags:
       $this: VALUE_PARAMETER name:<this> type:kotlin.Any flags:
   PROPERTY name:test type:A visibility:public modality:FINAL flags:val
-    FIELD PROPERTY_BACKING_FIELD name:test type:A visibility:public
+    FIELD PROPERTY_BACKING_FIELD name:test type:A visibility:public flags:final
       EXPRESSION_BODY
         CALL 'constructor A()' type=A origin=null
     FUN DEFAULT_PROPERTY_ACCESSOR name:<get-test> visibility:public modality:FINAL <> () returnType:A flags:
diff --git a/compiler/testData/ir/irText/expressions/elvis.txt b/compiler/testData/ir/irText/expressions/elvis.txt
index 0117d3092cc..6254144f508 100644
--- a/compiler/testData/ir/irText/expressions/elvis.txt
+++ b/compiler/testData/ir/irText/expressions/elvis.txt
@@ -1,6 +1,6 @@
 FILE fqName:<root> fileName:/elvis.kt
   PROPERTY name:p type:kotlin.Any? visibility:public modality:FINAL flags:val
-    FIELD PROPERTY_BACKING_FIELD name:p type:kotlin.Any? visibility:public
+    FIELD PROPERTY_BACKING_FIELD name:p type:kotlin.Any? visibility:public flags:final
       EXPRESSION_BODY
         CONST Null type=kotlin.Nothing? value=null
     FUN DEFAULT_PROPERTY_ACCESSOR name:<get-p> visibility:public modality:FINAL <> () returnType:Any? flags:
diff --git a/compiler/testData/ir/irText/expressions/enumEntryAsReceiver.txt b/compiler/testData/ir/irText/expressions/enumEntryAsReceiver.txt
index 8a9a623155d..19b00f46524 100644
--- a/compiler/testData/ir/irText/expressions/enumEntryAsReceiver.txt
+++ b/compiler/testData/ir/irText/expressions/enumEntryAsReceiver.txt
@@ -19,7 +19,7 @@ FILE fqName:<root> fileName:/enumEntryAsReceiver.kt
             ENUM_CONSTRUCTOR_CALL 'constructor X()'
             INSTANCE_INITIALIZER_CALL classDescriptor='B'
         PROPERTY name:value2 type:kotlin.String visibility:public modality:FINAL flags:val
-          FIELD PROPERTY_BACKING_FIELD name:value2 type:kotlin.String visibility:public
+          FIELD PROPERTY_BACKING_FIELD name:value2 type:kotlin.String visibility:public flags:final
             EXPRESSION_BODY
               CONST String type=kotlin.String value=OK
           FUN DEFAULT_PROPERTY_ACCESSOR name:<get-value2> visibility:public modality:FINAL <> ($this:X.B) returnType:String flags:
@@ -29,7 +29,7 @@ FILE fqName:<root> fileName:/enumEntryAsReceiver.kt
                 GET_FIELD 'value2: String' type=kotlin.String origin=null
                   receiver: GET_VAR 'this@B: B' type=X.B origin=null
         PROPERTY name:value type:() -> kotlin.String visibility:public modality:OPEN flags:val
-          FIELD PROPERTY_BACKING_FIELD name:value type:() -> kotlin.String visibility:public
+          FIELD PROPERTY_BACKING_FIELD name:value type:() -> kotlin.String visibility:public flags:
             EXPRESSION_BODY
               BLOCK type=() -> kotlin.String origin=LAMBDA
                 FUN LOCAL_FUNCTION_FOR_LAMBDA name:<anonymous> visibility:local modality:FINAL <> () returnType:String flags:
diff --git a/compiler/testData/ir/irText/expressions/field.txt b/compiler/testData/ir/irText/expressions/field.txt
index b3b2b0d510b..983043704ee 100644
--- a/compiler/testData/ir/irText/expressions/field.txt
+++ b/compiler/testData/ir/irText/expressions/field.txt
@@ -1,6 +1,6 @@
 FILE fqName:<root> fileName:/field.kt
   PROPERTY name:testSimple type:kotlin.Int visibility:public modality:FINAL flags:var
-    FIELD PROPERTY_BACKING_FIELD name:testSimple type:kotlin.Int visibility:public
+    FIELD PROPERTY_BACKING_FIELD name:testSimple type:kotlin.Int visibility:public flags:final
       EXPRESSION_BODY
         CONST Int type=kotlin.Int value=0
     FUN DEFAULT_PROPERTY_ACCESSOR name:<get-testSimple> visibility:public modality:FINAL <> () returnType:Int flags:
@@ -13,7 +13,7 @@ FILE fqName:<root> fileName:/field.kt
         SET_FIELD 'testSimple: Int' type=kotlin.Unit origin=EQ
           value: GET_VAR 'value-parameter value: Int' type=kotlin.Int origin=null
   PROPERTY name:testAugmented type:kotlin.Int visibility:public modality:FINAL flags:var
-    FIELD PROPERTY_BACKING_FIELD name:testAugmented type:kotlin.Int visibility:public
+    FIELD PROPERTY_BACKING_FIELD name:testAugmented type:kotlin.Int visibility:public flags:final
       EXPRESSION_BODY
         CONST Int type=kotlin.Int value=0
     FUN DEFAULT_PROPERTY_ACCESSOR name:<get-testAugmented> visibility:public modality:FINAL <> () returnType:Int flags:
diff --git a/compiler/testData/ir/irText/expressions/forWithImplicitReceivers.txt b/compiler/testData/ir/irText/expressions/forWithImplicitReceivers.txt
index 42ce13f7443..96d505de553 100644
--- a/compiler/testData/ir/irText/expressions/forWithImplicitReceivers.txt
+++ b/compiler/testData/ir/irText/expressions/forWithImplicitReceivers.txt
@@ -30,7 +30,7 @@ FILE fqName:<root> fileName:/forWithImplicitReceivers.kt
         DELEGATING_CONSTRUCTOR_CALL 'constructor Any()'
         INSTANCE_INITIALIZER_CALL classDescriptor='IntCell'
     PROPERTY name:value type:kotlin.Int visibility:public modality:FINAL flags:var
-      FIELD PROPERTY_BACKING_FIELD name:value type:kotlin.Int visibility:public
+      FIELD PROPERTY_BACKING_FIELD name:value type:kotlin.Int visibility:public flags:final
         EXPRESSION_BODY
           GET_VAR 'value-parameter value: Int' type=kotlin.Int origin=INITIALIZE_PROPERTY_FROM_PARAMETER
       FUN DEFAULT_PROPERTY_ACCESSOR name:<get-value> visibility:public modality:FINAL <> ($this:IntCell) returnType:Int flags:
diff --git a/compiler/testData/ir/irText/expressions/genericPropertyCall.txt b/compiler/testData/ir/irText/expressions/genericPropertyCall.txt
index a67517c9eb5..ff66b10fd61 100644
--- a/compiler/testData/ir/irText/expressions/genericPropertyCall.txt
+++ b/compiler/testData/ir/irText/expressions/genericPropertyCall.txt
@@ -9,7 +9,7 @@ FILE fqName:<root> fileName:/genericPropertyCall.kt
         RETURN type=kotlin.Nothing from='<get-id>() on T: T'
           GET_VAR 'this@id: T' type=T origin=null
   PROPERTY name:test type:kotlin.String visibility:public modality:FINAL flags:val
-    FIELD PROPERTY_BACKING_FIELD name:test type:kotlin.String visibility:public
+    FIELD PROPERTY_BACKING_FIELD name:test type:kotlin.String visibility:public flags:final
       EXPRESSION_BODY
         CALL '<get-id>() on String: String' type=kotlin.String origin=GET_PROPERTY
           <`0>: String
diff --git a/compiler/testData/ir/irText/expressions/incrementDecrement.txt b/compiler/testData/ir/irText/expressions/incrementDecrement.txt
index 8c217e86c8c..3119a2c03d7 100644
--- a/compiler/testData/ir/irText/expressions/incrementDecrement.txt
+++ b/compiler/testData/ir/irText/expressions/incrementDecrement.txt
@@ -1,6 +1,6 @@
 FILE fqName:<root> fileName:/incrementDecrement.kt
   PROPERTY name:p type:kotlin.Int visibility:public modality:FINAL flags:var
-    FIELD PROPERTY_BACKING_FIELD name:p type:kotlin.Int visibility:public
+    FIELD PROPERTY_BACKING_FIELD name:p type:kotlin.Int visibility:public flags:final
       EXPRESSION_BODY
         CONST Int type=kotlin.Int value=0
     FUN DEFAULT_PROPERTY_ACCESSOR name:<get-p> visibility:public modality:FINAL <> () returnType:Int flags:
@@ -13,7 +13,7 @@ FILE fqName:<root> fileName:/incrementDecrement.kt
         SET_FIELD 'p: Int' type=kotlin.Unit origin=null
           value: GET_VAR 'value-parameter <set-?>: Int' type=kotlin.Int origin=null
   PROPERTY name:arr type:kotlin.IntArray visibility:public modality:FINAL flags:val
-    FIELD PROPERTY_BACKING_FIELD name:arr type:kotlin.IntArray visibility:public
+    FIELD PROPERTY_BACKING_FIELD name:arr type:kotlin.IntArray visibility:public flags:final
       EXPRESSION_BODY
         CALL 'intArrayOf(vararg Int): IntArray' type=kotlin.IntArray origin=null
           elements: VARARG type=IntArray varargElementType=Int
diff --git a/compiler/testData/ir/irText/expressions/jvmInstanceFieldReference.txt b/compiler/testData/ir/irText/expressions/jvmInstanceFieldReference.txt
index f3fdfd48b05..1b60d98560e 100644
--- a/compiler/testData/ir/irText/expressions/jvmInstanceFieldReference.txt
+++ b/compiler/testData/ir/irText/expressions/jvmInstanceFieldReference.txt
@@ -26,7 +26,7 @@ FILE fqName:<root> fileName:/Derived.kt
           receiver: GET_VAR 'this@Derived: Derived' type=Derived origin=null
           value: GET_VAR 'value-parameter value: Int' type=kotlin.Int origin=null
     PROPERTY FAKE_OVERRIDE name:value type:kotlin.Int visibility:public modality:FINAL flags:var
-      FIELD FAKE_OVERRIDE name:value type:kotlin.Int visibility:public
+      FIELD FAKE_OVERRIDE name:value type:kotlin.Int visibility:public flags:final
     FUN FAKE_OVERRIDE name:equals visibility:public modality:OPEN <> ($this:kotlin.Any, other:kotlin.Any?) returnType:Boolean flags:
       overridden:
         FUN FAKE_OVERRIDE name:equals visibility:public modality:OPEN <> ($this:kotlin.Any, other:kotlin.Any?) returnType:Boolean flags:
diff --git a/compiler/testData/ir/irText/expressions/jvmStaticFieldReference.txt b/compiler/testData/ir/irText/expressions/jvmStaticFieldReference.txt
index 0674c6fdf2a..f09e6f99f49 100644
--- a/compiler/testData/ir/irText/expressions/jvmStaticFieldReference.txt
+++ b/compiler/testData/ir/irText/expressions/jvmStaticFieldReference.txt
@@ -33,7 +33,7 @@ FILE fqName:<root> fileName:/jvmStaticFieldReference.kt
         DELEGATING_CONSTRUCTOR_CALL 'constructor Any()'
         INSTANCE_INITIALIZER_CALL classDescriptor='TestClass'
     PROPERTY name:test type:kotlin.Int visibility:public modality:FINAL flags:val
-      FIELD PROPERTY_BACKING_FIELD name:test type:kotlin.Int visibility:public
+      FIELD PROPERTY_BACKING_FIELD name:test type:kotlin.Int visibility:public flags:final
         EXPRESSION_BODY
           WHEN type=kotlin.Int origin=WHEN
             BRANCH
diff --git a/compiler/testData/ir/irText/expressions/kt16904.txt b/compiler/testData/ir/irText/expressions/kt16904.txt
index 8b61b234a09..008d511ec0c 100644
--- a/compiler/testData/ir/irText/expressions/kt16904.txt
+++ b/compiler/testData/ir/irText/expressions/kt16904.txt
@@ -8,7 +8,7 @@ FILE fqName:<root> fileName:/kt16904.kt
         DELEGATING_CONSTRUCTOR_CALL 'constructor Any()'
         INSTANCE_INITIALIZER_CALL classDescriptor='A'
     PROPERTY name:x type:B visibility:public modality:FINAL flags:val
-      FIELD PROPERTY_BACKING_FIELD name:x type:B visibility:public
+      FIELD PROPERTY_BACKING_FIELD name:x type:B visibility:public flags:final
         EXPRESSION_BODY
           CALL 'constructor B()' type=B origin=null
       FUN DEFAULT_PROPERTY_ACCESSOR name:<get-x> visibility:public modality:FINAL <> ($this:A) returnType:B flags:
@@ -18,7 +18,7 @@ FILE fqName:<root> fileName:/kt16904.kt
             GET_FIELD 'x: B' type=B origin=null
               receiver: GET_VAR 'this@A: A' type=A origin=null
     PROPERTY name:y type:kotlin.Int visibility:public modality:FINAL flags:var
-      FIELD PROPERTY_BACKING_FIELD name:y type:kotlin.Int visibility:public
+      FIELD PROPERTY_BACKING_FIELD name:y type:kotlin.Int visibility:public flags:final
         EXPRESSION_BODY
           CONST Int type=kotlin.Int value=0
       FUN DEFAULT_PROPERTY_ACCESSOR name:<get-y> visibility:public modality:FINAL <> ($this:A) returnType:Int flags:
@@ -138,7 +138,7 @@ FILE fqName:<root> fileName:/kt16904.kt
           receiver: GET_VAR 'this@Test2: Test2' type=Test2 origin=null
           value: CONST Int type=kotlin.Int value=42
     PROPERTY FAKE_OVERRIDE name:field type:kotlin.Int visibility:public modality:FINAL flags:var
-      FIELD FAKE_OVERRIDE name:field type:kotlin.Int visibility:public
+      FIELD FAKE_OVERRIDE name:field type:kotlin.Int visibility:public flags:final
     FUN FAKE_OVERRIDE name:equals visibility:public modality:OPEN <> ($this:kotlin.Any, other:kotlin.Any?) returnType:Boolean flags:
       overridden:
         FUN FAKE_OVERRIDE name:equals visibility:public modality:OPEN <> ($this:kotlin.Any, other:kotlin.Any?) returnType:Boolean flags:
diff --git a/compiler/testData/ir/irText/expressions/literals.txt b/compiler/testData/ir/irText/expressions/literals.txt
index d955f1dcc13..3bc1b95e45f 100644
--- a/compiler/testData/ir/irText/expressions/literals.txt
+++ b/compiler/testData/ir/irText/expressions/literals.txt
@@ -1,6 +1,6 @@
 FILE fqName:<root> fileName:/literals.kt
   PROPERTY name:test1 type:kotlin.Int visibility:public modality:FINAL flags:val
-    FIELD PROPERTY_BACKING_FIELD name:test1 type:kotlin.Int visibility:public
+    FIELD PROPERTY_BACKING_FIELD name:test1 type:kotlin.Int visibility:public flags:final
       EXPRESSION_BODY
         CONST Int type=kotlin.Int value=1
     FUN DEFAULT_PROPERTY_ACCESSOR name:<get-test1> visibility:public modality:FINAL <> () returnType:Int flags:
@@ -8,7 +8,7 @@ FILE fqName:<root> fileName:/literals.kt
         RETURN type=kotlin.Nothing from='<get-test1>(): Int'
           GET_FIELD 'test1: Int' type=kotlin.Int origin=null
   PROPERTY name:test2 type:kotlin.Int visibility:public modality:FINAL flags:val
-    FIELD PROPERTY_BACKING_FIELD name:test2 type:kotlin.Int visibility:public
+    FIELD PROPERTY_BACKING_FIELD name:test2 type:kotlin.Int visibility:public flags:final
       EXPRESSION_BODY
         CONST Int type=kotlin.Int value=-1
     FUN DEFAULT_PROPERTY_ACCESSOR name:<get-test2> visibility:public modality:FINAL <> () returnType:Int flags:
@@ -16,7 +16,7 @@ FILE fqName:<root> fileName:/literals.kt
         RETURN type=kotlin.Nothing from='<get-test2>(): Int'
           GET_FIELD 'test2: Int' type=kotlin.Int origin=null
   PROPERTY name:test3 type:kotlin.Boolean visibility:public modality:FINAL flags:val
-    FIELD PROPERTY_BACKING_FIELD name:test3 type:kotlin.Boolean visibility:public
+    FIELD PROPERTY_BACKING_FIELD name:test3 type:kotlin.Boolean visibility:public flags:final
       EXPRESSION_BODY
         CONST Boolean type=kotlin.Boolean value=true
     FUN DEFAULT_PROPERTY_ACCESSOR name:<get-test3> visibility:public modality:FINAL <> () returnType:Boolean flags:
@@ -24,7 +24,7 @@ FILE fqName:<root> fileName:/literals.kt
         RETURN type=kotlin.Nothing from='<get-test3>(): Boolean'
           GET_FIELD 'test3: Boolean' type=kotlin.Boolean origin=null
   PROPERTY name:test4 type:kotlin.Boolean visibility:public modality:FINAL flags:val
-    FIELD PROPERTY_BACKING_FIELD name:test4 type:kotlin.Boolean visibility:public
+    FIELD PROPERTY_BACKING_FIELD name:test4 type:kotlin.Boolean visibility:public flags:final
       EXPRESSION_BODY
         CONST Boolean type=kotlin.Boolean value=false
     FUN DEFAULT_PROPERTY_ACCESSOR name:<get-test4> visibility:public modality:FINAL <> () returnType:Boolean flags:
@@ -32,7 +32,7 @@ FILE fqName:<root> fileName:/literals.kt
         RETURN type=kotlin.Nothing from='<get-test4>(): Boolean'
           GET_FIELD 'test4: Boolean' type=kotlin.Boolean origin=null
   PROPERTY name:test5 type:kotlin.String visibility:public modality:FINAL flags:val
-    FIELD PROPERTY_BACKING_FIELD name:test5 type:kotlin.String visibility:public
+    FIELD PROPERTY_BACKING_FIELD name:test5 type:kotlin.String visibility:public flags:final
       EXPRESSION_BODY
         CONST String type=kotlin.String value=abc
     FUN DEFAULT_PROPERTY_ACCESSOR name:<get-test5> visibility:public modality:FINAL <> () returnType:String flags:
@@ -40,7 +40,7 @@ FILE fqName:<root> fileName:/literals.kt
         RETURN type=kotlin.Nothing from='<get-test5>(): String'
           GET_FIELD 'test5: String' type=kotlin.String origin=null
   PROPERTY name:test6 type:kotlin.Nothing? visibility:public modality:FINAL flags:val
-    FIELD PROPERTY_BACKING_FIELD name:test6 type:kotlin.Nothing? visibility:public
+    FIELD PROPERTY_BACKING_FIELD name:test6 type:kotlin.Nothing? visibility:public flags:final
       EXPRESSION_BODY
         CONST Null type=kotlin.Nothing? value=null
     FUN DEFAULT_PROPERTY_ACCESSOR name:<get-test6> visibility:public modality:FINAL <> () returnType:Nothing? flags:
@@ -48,7 +48,7 @@ FILE fqName:<root> fileName:/literals.kt
         RETURN type=kotlin.Nothing from='<get-test6>(): Nothing?'
           GET_FIELD 'test6: Nothing?' type=kotlin.Nothing? origin=null
   PROPERTY name:test7 type:kotlin.Long visibility:public modality:FINAL flags:val
-    FIELD PROPERTY_BACKING_FIELD name:test7 type:kotlin.Long visibility:public
+    FIELD PROPERTY_BACKING_FIELD name:test7 type:kotlin.Long visibility:public flags:final
       EXPRESSION_BODY
         CONST Long type=kotlin.Long value=1
     FUN DEFAULT_PROPERTY_ACCESSOR name:<get-test7> visibility:public modality:FINAL <> () returnType:Long flags:
@@ -56,7 +56,7 @@ FILE fqName:<root> fileName:/literals.kt
         RETURN type=kotlin.Nothing from='<get-test7>(): Long'
           GET_FIELD 'test7: Long' type=kotlin.Long origin=null
   PROPERTY name:test8 type:kotlin.Long visibility:public modality:FINAL flags:val
-    FIELD PROPERTY_BACKING_FIELD name:test8 type:kotlin.Long visibility:public
+    FIELD PROPERTY_BACKING_FIELD name:test8 type:kotlin.Long visibility:public flags:final
       EXPRESSION_BODY
         CONST Long type=kotlin.Long value=-1
     FUN DEFAULT_PROPERTY_ACCESSOR name:<get-test8> visibility:public modality:FINAL <> () returnType:Long flags:
@@ -64,7 +64,7 @@ FILE fqName:<root> fileName:/literals.kt
         RETURN type=kotlin.Nothing from='<get-test8>(): Long'
           GET_FIELD 'test8: Long' type=kotlin.Long origin=null
   PROPERTY name:test9 type:kotlin.Double visibility:public modality:FINAL flags:val
-    FIELD PROPERTY_BACKING_FIELD name:test9 type:kotlin.Double visibility:public
+    FIELD PROPERTY_BACKING_FIELD name:test9 type:kotlin.Double visibility:public flags:final
       EXPRESSION_BODY
         CONST Double type=kotlin.Double value=1.0
     FUN DEFAULT_PROPERTY_ACCESSOR name:<get-test9> visibility:public modality:FINAL <> () returnType:Double flags:
@@ -72,7 +72,7 @@ FILE fqName:<root> fileName:/literals.kt
         RETURN type=kotlin.Nothing from='<get-test9>(): Double'
           GET_FIELD 'test9: Double' type=kotlin.Double origin=null
   PROPERTY name:test10 type:kotlin.Double visibility:public modality:FINAL flags:val
-    FIELD PROPERTY_BACKING_FIELD name:test10 type:kotlin.Double visibility:public
+    FIELD PROPERTY_BACKING_FIELD name:test10 type:kotlin.Double visibility:public flags:final
       EXPRESSION_BODY
         CONST Double type=kotlin.Double value=-1.0
     FUN DEFAULT_PROPERTY_ACCESSOR name:<get-test10> visibility:public modality:FINAL <> () returnType:Double flags:
@@ -80,7 +80,7 @@ FILE fqName:<root> fileName:/literals.kt
         RETURN type=kotlin.Nothing from='<get-test10>(): Double'
           GET_FIELD 'test10: Double' type=kotlin.Double origin=null
   PROPERTY name:test11 type:kotlin.Float visibility:public modality:FINAL flags:val
-    FIELD PROPERTY_BACKING_FIELD name:test11 type:kotlin.Float visibility:public
+    FIELD PROPERTY_BACKING_FIELD name:test11 type:kotlin.Float visibility:public flags:final
       EXPRESSION_BODY
         CONST Float type=kotlin.Float value=1.0
     FUN DEFAULT_PROPERTY_ACCESSOR name:<get-test11> visibility:public modality:FINAL <> () returnType:Float flags:
@@ -88,7 +88,7 @@ FILE fqName:<root> fileName:/literals.kt
         RETURN type=kotlin.Nothing from='<get-test11>(): Float'
           GET_FIELD 'test11: Float' type=kotlin.Float origin=null
   PROPERTY name:test12 type:kotlin.Float visibility:public modality:FINAL flags:val
-    FIELD PROPERTY_BACKING_FIELD name:test12 type:kotlin.Float visibility:public
+    FIELD PROPERTY_BACKING_FIELD name:test12 type:kotlin.Float visibility:public flags:final
       EXPRESSION_BODY
         CONST Float type=kotlin.Float value=-1.0
     FUN DEFAULT_PROPERTY_ACCESSOR name:<get-test12> visibility:public modality:FINAL <> () returnType:Float flags:
@@ -96,7 +96,7 @@ FILE fqName:<root> fileName:/literals.kt
         RETURN type=kotlin.Nothing from='<get-test12>(): Float'
           GET_FIELD 'test12: Float' type=kotlin.Float origin=null
   PROPERTY name:test13 type:kotlin.Char visibility:public modality:FINAL flags:val
-    FIELD PROPERTY_BACKING_FIELD name:test13 type:kotlin.Char visibility:public
+    FIELD PROPERTY_BACKING_FIELD name:test13 type:kotlin.Char visibility:public flags:final
       EXPRESSION_BODY
         CONST Char type=kotlin.Char value=a
     FUN DEFAULT_PROPERTY_ACCESSOR name:<get-test13> visibility:public modality:FINAL <> () returnType:Char flags:
@@ -104,7 +104,7 @@ FILE fqName:<root> fileName:/literals.kt
         RETURN type=kotlin.Nothing from='<get-test13>(): Char'
           GET_FIELD 'test13: Char' type=kotlin.Char origin=null
   PROPERTY name:testB type:kotlin.Byte visibility:public modality:FINAL flags:val
-    FIELD PROPERTY_BACKING_FIELD name:testB type:kotlin.Byte visibility:public
+    FIELD PROPERTY_BACKING_FIELD name:testB type:kotlin.Byte visibility:public flags:final
       EXPRESSION_BODY
         CONST Byte type=kotlin.Byte value=1
     FUN DEFAULT_PROPERTY_ACCESSOR name:<get-testB> visibility:public modality:FINAL <> () returnType:Byte flags:
@@ -112,7 +112,7 @@ FILE fqName:<root> fileName:/literals.kt
         RETURN type=kotlin.Nothing from='<get-testB>(): Byte'
           GET_FIELD 'testB: Byte' type=kotlin.Byte origin=null
   PROPERTY name:testS type:kotlin.Short visibility:public modality:FINAL flags:val
-    FIELD PROPERTY_BACKING_FIELD name:testS type:kotlin.Short visibility:public
+    FIELD PROPERTY_BACKING_FIELD name:testS type:kotlin.Short visibility:public flags:final
       EXPRESSION_BODY
         CONST Short type=kotlin.Short value=1
     FUN DEFAULT_PROPERTY_ACCESSOR name:<get-testS> visibility:public modality:FINAL <> () returnType:Short flags:
@@ -120,7 +120,7 @@ FILE fqName:<root> fileName:/literals.kt
         RETURN type=kotlin.Nothing from='<get-testS>(): Short'
           GET_FIELD 'testS: Short' type=kotlin.Short origin=null
   PROPERTY name:testI type:kotlin.Int visibility:public modality:FINAL flags:val
-    FIELD PROPERTY_BACKING_FIELD name:testI type:kotlin.Int visibility:public
+    FIELD PROPERTY_BACKING_FIELD name:testI type:kotlin.Int visibility:public flags:final
       EXPRESSION_BODY
         CONST Int type=kotlin.Int value=1
     FUN DEFAULT_PROPERTY_ACCESSOR name:<get-testI> visibility:public modality:FINAL <> () returnType:Int flags:
@@ -128,7 +128,7 @@ FILE fqName:<root> fileName:/literals.kt
         RETURN type=kotlin.Nothing from='<get-testI>(): Int'
           GET_FIELD 'testI: Int' type=kotlin.Int origin=null
   PROPERTY name:testL type:kotlin.Long visibility:public modality:FINAL flags:val
-    FIELD PROPERTY_BACKING_FIELD name:testL type:kotlin.Long visibility:public
+    FIELD PROPERTY_BACKING_FIELD name:testL type:kotlin.Long visibility:public flags:final
       EXPRESSION_BODY
         CONST Long type=kotlin.Long value=1
     FUN DEFAULT_PROPERTY_ACCESSOR name:<get-testL> visibility:public modality:FINAL <> () returnType:Long flags:
diff --git a/compiler/testData/ir/irText/expressions/memberTypeArguments.txt b/compiler/testData/ir/irText/expressions/memberTypeArguments.txt
index 9851166a5f1..76dc0c18bf9 100644
--- a/compiler/testData/ir/irText/expressions/memberTypeArguments.txt
+++ b/compiler/testData/ir/irText/expressions/memberTypeArguments.txt
@@ -12,7 +12,7 @@ FILE fqName:<root> fileName:/memberTypeArguments.kt
         DELEGATING_CONSTRUCTOR_CALL 'constructor Any()'
         INSTANCE_INITIALIZER_CALL classDescriptor='GenericClass'
     PROPERTY name:value type:T visibility:public modality:FINAL flags:val
-      FIELD PROPERTY_BACKING_FIELD name:value type:T visibility:public
+      FIELD PROPERTY_BACKING_FIELD name:value type:T visibility:public flags:final
         EXPRESSION_BODY
           GET_VAR 'value-parameter value: T' type=T origin=INITIALIZE_PROPERTY_FROM_PARAMETER
       FUN DEFAULT_PROPERTY_ACCESSOR name:<get-value> visibility:public modality:FINAL <> ($this:GenericClass<T>) returnType:T flags:
diff --git a/compiler/testData/ir/irText/expressions/membersImportedFromObject.txt b/compiler/testData/ir/irText/expressions/membersImportedFromObject.txt
index 92955f0360e..533569db403 100644
--- a/compiler/testData/ir/irText/expressions/membersImportedFromObject.txt
+++ b/compiler/testData/ir/irText/expressions/membersImportedFromObject.txt
@@ -19,7 +19,7 @@ FILE fqName:<root> fileName:/membersImportedFromObject.kt
         RETURN type=kotlin.Nothing from='fooExt() on Int: Int'
           CONST Int type=kotlin.Int value=2
     PROPERTY name:bar type:kotlin.Int visibility:public modality:FINAL flags:val
-      FIELD PROPERTY_BACKING_FIELD name:bar type:kotlin.Int visibility:public
+      FIELD PROPERTY_BACKING_FIELD name:bar type:kotlin.Int visibility:public flags:final
         EXPRESSION_BODY
           CONST Int type=kotlin.Int value=42
       FUN DEFAULT_PROPERTY_ACCESSOR name:<get-bar> visibility:public modality:FINAL <> ($this:A) returnType:Int flags:
@@ -49,7 +49,7 @@ FILE fqName:<root> fileName:/membersImportedFromObject.kt
         FUN IR_EXTERNAL_DECLARATION_STUB name:toString visibility:public modality:OPEN <> ($this:kotlin.Any) returnType:String flags:
       $this: VALUE_PARAMETER name:<this> type:kotlin.Any flags:
   PROPERTY name:test1 type:kotlin.Int visibility:public modality:FINAL flags:val
-    FIELD PROPERTY_BACKING_FIELD name:test1 type:kotlin.Int visibility:public
+    FIELD PROPERTY_BACKING_FIELD name:test1 type:kotlin.Int visibility:public flags:final
       EXPRESSION_BODY
         CALL 'foo(): Int' type=kotlin.Int origin=null
           $this: GET_OBJECT 'A' type=A
@@ -58,7 +58,7 @@ FILE fqName:<root> fileName:/membersImportedFromObject.kt
         RETURN type=kotlin.Nothing from='<get-test1>(): Int'
           GET_FIELD 'test1: Int' type=kotlin.Int origin=null
   PROPERTY name:test2 type:kotlin.Int visibility:public modality:FINAL flags:val
-    FIELD PROPERTY_BACKING_FIELD name:test2 type:kotlin.Int visibility:public
+    FIELD PROPERTY_BACKING_FIELD name:test2 type:kotlin.Int visibility:public flags:final
       EXPRESSION_BODY
         CALL '<get-bar>(): Int' type=kotlin.Int origin=GET_PROPERTY
           $this: GET_OBJECT 'A' type=A
@@ -67,7 +67,7 @@ FILE fqName:<root> fileName:/membersImportedFromObject.kt
         RETURN type=kotlin.Nothing from='<get-test2>(): Int'
           GET_FIELD 'test2: Int' type=kotlin.Int origin=null
   PROPERTY name:test3 type:kotlin.Int visibility:public modality:FINAL flags:val
-    FIELD PROPERTY_BACKING_FIELD name:test3 type:kotlin.Int visibility:public
+    FIELD PROPERTY_BACKING_FIELD name:test3 type:kotlin.Int visibility:public flags:final
       EXPRESSION_BODY
         CALL 'fooExt() on Int: Int' type=kotlin.Int origin=null
           $this: GET_OBJECT 'A' type=A
@@ -77,7 +77,7 @@ FILE fqName:<root> fileName:/membersImportedFromObject.kt
         RETURN type=kotlin.Nothing from='<get-test3>(): Int'
           GET_FIELD 'test3: Int' type=kotlin.Int origin=null
   PROPERTY name:test4 type:kotlin.Int visibility:public modality:FINAL flags:val
-    FIELD PROPERTY_BACKING_FIELD name:test4 type:kotlin.Int visibility:public
+    FIELD PROPERTY_BACKING_FIELD name:test4 type:kotlin.Int visibility:public flags:final
       EXPRESSION_BODY
         CALL '<get-barExt>() on Int: Int' type=kotlin.Int origin=GET_PROPERTY
           $this: GET_OBJECT 'A' type=A
diff --git a/compiler/testData/ir/irText/expressions/multipleThisReferences.txt b/compiler/testData/ir/irText/expressions/multipleThisReferences.txt
index 05d768caf04..1aeb5b15605 100644
--- a/compiler/testData/ir/irText/expressions/multipleThisReferences.txt
+++ b/compiler/testData/ir/irText/expressions/multipleThisReferences.txt
@@ -18,7 +18,7 @@ FILE fqName:<root> fileName:/multipleThisReferences.kt
           DELEGATING_CONSTRUCTOR_CALL 'constructor Any()'
           INSTANCE_INITIALIZER_CALL classDescriptor='Inner'
       PROPERTY name:x type:kotlin.Int visibility:public modality:FINAL flags:val
-        FIELD PROPERTY_BACKING_FIELD name:x type:kotlin.Int visibility:public
+        FIELD PROPERTY_BACKING_FIELD name:x type:kotlin.Int visibility:public flags:final
           EXPRESSION_BODY
             GET_VAR 'value-parameter x: Int' type=kotlin.Int origin=INITIALIZE_PROPERTY_FROM_PARAMETER
         FUN DEFAULT_PROPERTY_ACCESSOR name:<get-x> visibility:public modality:FINAL <> ($this:Outer.Inner) returnType:Int flags:
@@ -63,7 +63,7 @@ FILE fqName:<root> fileName:/multipleThisReferences.kt
         DELEGATING_CONSTRUCTOR_CALL 'constructor Any()'
         INSTANCE_INITIALIZER_CALL classDescriptor='Host'
     PROPERTY name:y type:kotlin.Int visibility:public modality:FINAL flags:val
-      FIELD PROPERTY_BACKING_FIELD name:y type:kotlin.Int visibility:public
+      FIELD PROPERTY_BACKING_FIELD name:y type:kotlin.Int visibility:public flags:final
         EXPRESSION_BODY
           GET_VAR 'value-parameter y: Int' type=kotlin.Int origin=INITIALIZE_PROPERTY_FROM_PARAMETER
       FUN DEFAULT_PROPERTY_ACCESSOR name:<get-y> visibility:public modality:FINAL <> ($this:Host) returnType:Int flags:
@@ -89,7 +89,7 @@ FILE fqName:<root> fileName:/multipleThisReferences.kt
                     x: CONST Int type=kotlin.Int value=42
                   INSTANCE_INITIALIZER_CALL classDescriptor='<no name provided>'
               PROPERTY name:xx type:kotlin.Int visibility:public modality:FINAL flags:val
-                FIELD PROPERTY_BACKING_FIELD name:xx type:kotlin.Int visibility:public
+                FIELD PROPERTY_BACKING_FIELD name:xx type:kotlin.Int visibility:public flags:final
                   EXPRESSION_BODY
                     CALL 'plus(Int): Int' type=kotlin.Int origin=PLUS
                       $this: CALL '<get-x>(): Int' type=kotlin.Int origin=GET_PROPERTY
diff --git a/compiler/testData/ir/irText/expressions/objectAsCallable.txt b/compiler/testData/ir/irText/expressions/objectAsCallable.txt
index 4d9e3022b3b..0ecc3820da4 100644
--- a/compiler/testData/ir/irText/expressions/objectAsCallable.txt
+++ b/compiler/testData/ir/irText/expressions/objectAsCallable.txt
@@ -89,7 +89,7 @@ FILE fqName:<root> fileName:/objectAsCallable.kt
       RETURN type=kotlin.Nothing from='invoke(Int) on En: Int'
         GET_VAR 'value-parameter i: Int' type=kotlin.Int origin=null
   PROPERTY name:test1 type:kotlin.Int visibility:public modality:FINAL flags:val
-    FIELD PROPERTY_BACKING_FIELD name:test1 type:kotlin.Int visibility:public
+    FIELD PROPERTY_BACKING_FIELD name:test1 type:kotlin.Int visibility:public flags:final
       EXPRESSION_BODY
         CALL 'invoke(Int) on A: Int' type=kotlin.Int origin=INVOKE
           $receiver: GET_OBJECT 'A' type=A
@@ -99,7 +99,7 @@ FILE fqName:<root> fileName:/objectAsCallable.kt
         RETURN type=kotlin.Nothing from='<get-test1>(): Int'
           GET_FIELD 'test1: Int' type=kotlin.Int origin=null
   PROPERTY name:test2 type:kotlin.Int visibility:public modality:FINAL flags:val
-    FIELD PROPERTY_BACKING_FIELD name:test2 type:kotlin.Int visibility:public
+    FIELD PROPERTY_BACKING_FIELD name:test2 type:kotlin.Int visibility:public flags:final
       EXPRESSION_BODY
         CALL 'invoke(Int) on En: Int' type=kotlin.Int origin=INVOKE
           $receiver: GET_ENUM 'X' type=En
diff --git a/compiler/testData/ir/irText/expressions/primitivesImplicitConversions.txt b/compiler/testData/ir/irText/expressions/primitivesImplicitConversions.txt
index 38434c6b8f9..45c3d40f1b6 100644
--- a/compiler/testData/ir/irText/expressions/primitivesImplicitConversions.txt
+++ b/compiler/testData/ir/irText/expressions/primitivesImplicitConversions.txt
@@ -1,6 +1,6 @@
 FILE fqName:<root> fileName:/primitivesImplicitConversions.kt
   PROPERTY name:test1 type:kotlin.Long visibility:public modality:FINAL flags:val
-    FIELD PROPERTY_BACKING_FIELD name:test1 type:kotlin.Long visibility:public
+    FIELD PROPERTY_BACKING_FIELD name:test1 type:kotlin.Long visibility:public flags:final
       EXPRESSION_BODY
         CONST Long type=kotlin.Long value=42
     FUN DEFAULT_PROPERTY_ACCESSOR name:<get-test1> visibility:public modality:FINAL <> () returnType:Long flags:
@@ -8,7 +8,7 @@ FILE fqName:<root> fileName:/primitivesImplicitConversions.kt
         RETURN type=kotlin.Nothing from='<get-test1>(): Long'
           GET_FIELD 'test1: Long' type=kotlin.Long origin=null
   PROPERTY name:test2 type:kotlin.Short visibility:public modality:FINAL flags:val
-    FIELD PROPERTY_BACKING_FIELD name:test2 type:kotlin.Short visibility:public
+    FIELD PROPERTY_BACKING_FIELD name:test2 type:kotlin.Short visibility:public flags:final
       EXPRESSION_BODY
         CONST Short type=kotlin.Short value=42
     FUN DEFAULT_PROPERTY_ACCESSOR name:<get-test2> visibility:public modality:FINAL <> () returnType:Short flags:
@@ -16,7 +16,7 @@ FILE fqName:<root> fileName:/primitivesImplicitConversions.kt
         RETURN type=kotlin.Nothing from='<get-test2>(): Short'
           GET_FIELD 'test2: Short' type=kotlin.Short origin=null
   PROPERTY name:test3 type:kotlin.Byte visibility:public modality:FINAL flags:val
-    FIELD PROPERTY_BACKING_FIELD name:test3 type:kotlin.Byte visibility:public
+    FIELD PROPERTY_BACKING_FIELD name:test3 type:kotlin.Byte visibility:public flags:final
       EXPRESSION_BODY
         CONST Byte type=kotlin.Byte value=42
     FUN DEFAULT_PROPERTY_ACCESSOR name:<get-test3> visibility:public modality:FINAL <> () returnType:Byte flags:
@@ -24,7 +24,7 @@ FILE fqName:<root> fileName:/primitivesImplicitConversions.kt
         RETURN type=kotlin.Nothing from='<get-test3>(): Byte'
           GET_FIELD 'test3: Byte' type=kotlin.Byte origin=null
   PROPERTY name:test4 type:kotlin.Long visibility:public modality:FINAL flags:val
-    FIELD PROPERTY_BACKING_FIELD name:test4 type:kotlin.Long visibility:public
+    FIELD PROPERTY_BACKING_FIELD name:test4 type:kotlin.Long visibility:public flags:final
       EXPRESSION_BODY
         TYPE_OP type=kotlin.Long origin=IMPLICIT_INTEGER_COERCION typeOperand=kotlin.Long
           typeOperand: CLASS IR_EXTERNAL_DECLARATION_STUB CLASS name:Long modality:FINAL visibility:public flags:
@@ -35,7 +35,7 @@ FILE fqName:<root> fileName:/primitivesImplicitConversions.kt
         RETURN type=kotlin.Nothing from='<get-test4>(): Long'
           GET_FIELD 'test4: Long' type=kotlin.Long origin=null
   PROPERTY name:test5 type:kotlin.Short visibility:public modality:FINAL flags:val
-    FIELD PROPERTY_BACKING_FIELD name:test5 type:kotlin.Short visibility:public
+    FIELD PROPERTY_BACKING_FIELD name:test5 type:kotlin.Short visibility:public flags:final
       EXPRESSION_BODY
         TYPE_OP type=kotlin.Short origin=IMPLICIT_INTEGER_COERCION typeOperand=kotlin.Short
           typeOperand: CLASS IR_EXTERNAL_DECLARATION_STUB CLASS name:Short modality:FINAL visibility:public flags:
@@ -46,7 +46,7 @@ FILE fqName:<root> fileName:/primitivesImplicitConversions.kt
         RETURN type=kotlin.Nothing from='<get-test5>(): Short'
           GET_FIELD 'test5: Short' type=kotlin.Short origin=null
   PROPERTY name:test6 type:kotlin.Byte visibility:public modality:FINAL flags:val
-    FIELD PROPERTY_BACKING_FIELD name:test6 type:kotlin.Byte visibility:public
+    FIELD PROPERTY_BACKING_FIELD name:test6 type:kotlin.Byte visibility:public flags:final
       EXPRESSION_BODY
         TYPE_OP type=kotlin.Byte origin=IMPLICIT_INTEGER_COERCION typeOperand=kotlin.Byte
           typeOperand: CLASS IR_EXTERNAL_DECLARATION_STUB CLASS name:Byte modality:FINAL visibility:public flags:
@@ -104,7 +104,7 @@ FILE fqName:<root> fileName:/primitivesImplicitConversions.kt
         DELEGATING_CONSTRUCTOR_CALL 'constructor Any()'
         INSTANCE_INITIALIZER_CALL classDescriptor='TestImplicitArguments'
     PROPERTY name:x type:kotlin.Long visibility:public modality:FINAL flags:val
-      FIELD PROPERTY_BACKING_FIELD name:x type:kotlin.Long visibility:public
+      FIELD PROPERTY_BACKING_FIELD name:x type:kotlin.Long visibility:public flags:final
         EXPRESSION_BODY
           GET_VAR 'value-parameter x: Long = ...' type=kotlin.Long origin=INITIALIZE_PROPERTY_FROM_PARAMETER
       FUN DEFAULT_PROPERTY_ACCESSOR name:<get-x> visibility:public modality:FINAL <> ($this:TestImplicitArguments) returnType:Long flags:
diff --git a/compiler/testData/ir/irText/expressions/references.txt b/compiler/testData/ir/irText/expressions/references.txt
index ade19d83414..49ff8fae661 100644
--- a/compiler/testData/ir/irText/expressions/references.txt
+++ b/compiler/testData/ir/irText/expressions/references.txt
@@ -1,6 +1,6 @@
 FILE fqName:<root> fileName:/references.kt
   PROPERTY name:ok type:kotlin.String visibility:public modality:FINAL flags:val
-    FIELD PROPERTY_BACKING_FIELD name:ok type:kotlin.String visibility:public
+    FIELD PROPERTY_BACKING_FIELD name:ok type:kotlin.String visibility:public flags:final
       EXPRESSION_BODY
         CONST String type=kotlin.String value=OK
     FUN DEFAULT_PROPERTY_ACCESSOR name:<get-ok> visibility:public modality:FINAL <> () returnType:String flags:
@@ -8,7 +8,7 @@ FILE fqName:<root> fileName:/references.kt
         RETURN type=kotlin.Nothing from='<get-ok>(): String'
           GET_FIELD 'ok: String' type=kotlin.String origin=null
   PROPERTY name:ok2 type:kotlin.String visibility:public modality:FINAL flags:val
-    FIELD PROPERTY_BACKING_FIELD name:ok2 type:kotlin.String visibility:public
+    FIELD PROPERTY_BACKING_FIELD name:ok2 type:kotlin.String visibility:public flags:final
       EXPRESSION_BODY
         CALL '<get-ok>(): String' type=kotlin.String origin=GET_PROPERTY
     FUN DEFAULT_PROPERTY_ACCESSOR name:<get-ok2> visibility:public modality:FINAL <> () returnType:String flags:
diff --git a/compiler/testData/ir/irText/expressions/reflectionLiterals.txt b/compiler/testData/ir/irText/expressions/reflectionLiterals.txt
index 63877dc571f..72f3bf600a4 100644
--- a/compiler/testData/ir/irText/expressions/reflectionLiterals.txt
+++ b/compiler/testData/ir/irText/expressions/reflectionLiterals.txt
@@ -26,7 +26,7 @@ FILE fqName:<root> fileName:/reflectionLiterals.kt
   FUN name:bar visibility:public modality:FINAL <> () returnType:Unit flags:
     BLOCK_BODY
   PROPERTY name:qux type:kotlin.Int visibility:public modality:FINAL flags:val
-    FIELD PROPERTY_BACKING_FIELD name:qux type:kotlin.Int visibility:public
+    FIELD PROPERTY_BACKING_FIELD name:qux type:kotlin.Int visibility:public flags:final
       EXPRESSION_BODY
         CONST Int type=kotlin.Int value=42
     FUN DEFAULT_PROPERTY_ACCESSOR name:<get-qux> visibility:public modality:FINAL <> () returnType:Int flags:
@@ -34,7 +34,7 @@ FILE fqName:<root> fileName:/reflectionLiterals.kt
         RETURN type=kotlin.Nothing from='<get-qux>(): Int'
           GET_FIELD 'qux: Int' type=kotlin.Int origin=null
   PROPERTY name:test1 type:kotlin.reflect.KClass<A> visibility:public modality:FINAL flags:val
-    FIELD PROPERTY_BACKING_FIELD name:test1 type:kotlin.reflect.KClass<A> visibility:public
+    FIELD PROPERTY_BACKING_FIELD name:test1 type:kotlin.reflect.KClass<A> visibility:public flags:final
       EXPRESSION_BODY
         CLASS_REFERENCE 'A' type=kotlin.reflect.KClass<A>
     FUN DEFAULT_PROPERTY_ACCESSOR name:<get-test1> visibility:public modality:FINAL <> () returnType:KClass<A> flags:
@@ -42,7 +42,7 @@ FILE fqName:<root> fileName:/reflectionLiterals.kt
         RETURN type=kotlin.Nothing from='<get-test1>(): KClass<A>'
           GET_FIELD 'test1: KClass<A>' type=kotlin.reflect.KClass<A> origin=null
   PROPERTY name:test2 type:kotlin.reflect.KClass<out kotlin.Int> visibility:public modality:FINAL flags:val
-    FIELD PROPERTY_BACKING_FIELD name:test2 type:kotlin.reflect.KClass<out kotlin.Int> visibility:public
+    FIELD PROPERTY_BACKING_FIELD name:test2 type:kotlin.reflect.KClass<out kotlin.Int> visibility:public flags:final
       EXPRESSION_BODY
         GET_CLASS type=kotlin.reflect.KClass<out kotlin.Int>
           CALL '<get-qux>(): Int' type=kotlin.Int origin=GET_PROPERTY
@@ -51,7 +51,7 @@ FILE fqName:<root> fileName:/reflectionLiterals.kt
         RETURN type=kotlin.Nothing from='<get-test2>(): KClass<out Int>'
           GET_FIELD 'test2: KClass<out Int>' type=kotlin.reflect.KClass<out kotlin.Int> origin=null
   PROPERTY name:test3 type:kotlin.reflect.KFunction1<A, kotlin.Unit> visibility:public modality:FINAL flags:val
-    FIELD PROPERTY_BACKING_FIELD name:test3 type:kotlin.reflect.KFunction1<A, kotlin.Unit> visibility:public
+    FIELD PROPERTY_BACKING_FIELD name:test3 type:kotlin.reflect.KFunction1<A, kotlin.Unit> visibility:public flags:final
       EXPRESSION_BODY
         FUNCTION_REFERENCE 'foo(): Unit' type=kotlin.reflect.KFunction1<A, kotlin.Unit> origin=null
     FUN DEFAULT_PROPERTY_ACCESSOR name:<get-test3> visibility:public modality:FINAL <> () returnType:KFunction1<A, Unit> flags:
@@ -59,7 +59,7 @@ FILE fqName:<root> fileName:/reflectionLiterals.kt
         RETURN type=kotlin.Nothing from='<get-test3>(): KFunction1<A, Unit>'
           GET_FIELD 'test3: KFunction1<A, Unit>' type=kotlin.reflect.KFunction1<A, kotlin.Unit> origin=null
   PROPERTY name:test4 type:kotlin.reflect.KFunction0<A> visibility:public modality:FINAL flags:val
-    FIELD PROPERTY_BACKING_FIELD name:test4 type:kotlin.reflect.KFunction0<A> visibility:public
+    FIELD PROPERTY_BACKING_FIELD name:test4 type:kotlin.reflect.KFunction0<A> visibility:public flags:final
       EXPRESSION_BODY
         FUNCTION_REFERENCE 'constructor A()' type=kotlin.reflect.KFunction0<A> origin=null
     FUN DEFAULT_PROPERTY_ACCESSOR name:<get-test4> visibility:public modality:FINAL <> () returnType:KFunction0<A> flags:
@@ -67,7 +67,7 @@ FILE fqName:<root> fileName:/reflectionLiterals.kt
         RETURN type=kotlin.Nothing from='<get-test4>(): KFunction0<A>'
           GET_FIELD 'test4: KFunction0<A>' type=kotlin.reflect.KFunction0<A> origin=null
   PROPERTY name:test5 type:kotlin.reflect.KFunction0<kotlin.Unit> visibility:public modality:FINAL flags:val
-    FIELD PROPERTY_BACKING_FIELD name:test5 type:kotlin.reflect.KFunction0<kotlin.Unit> visibility:public
+    FIELD PROPERTY_BACKING_FIELD name:test5 type:kotlin.reflect.KFunction0<kotlin.Unit> visibility:public flags:final
       EXPRESSION_BODY
         FUNCTION_REFERENCE 'foo(): Unit' type=kotlin.reflect.KFunction0<kotlin.Unit> origin=null
           $this: CALL 'constructor A()' type=A origin=null
@@ -76,7 +76,7 @@ FILE fqName:<root> fileName:/reflectionLiterals.kt
         RETURN type=kotlin.Nothing from='<get-test5>(): KFunction0<Unit>'
           GET_FIELD 'test5: KFunction0<Unit>' type=kotlin.reflect.KFunction0<kotlin.Unit> origin=null
   PROPERTY name:test6 type:kotlin.reflect.KFunction0<kotlin.Unit> visibility:public modality:FINAL flags:val
-    FIELD PROPERTY_BACKING_FIELD name:test6 type:kotlin.reflect.KFunction0<kotlin.Unit> visibility:public
+    FIELD PROPERTY_BACKING_FIELD name:test6 type:kotlin.reflect.KFunction0<kotlin.Unit> visibility:public flags:final
       EXPRESSION_BODY
         FUNCTION_REFERENCE 'bar(): Unit' type=kotlin.reflect.KFunction0<kotlin.Unit> origin=null
     FUN DEFAULT_PROPERTY_ACCESSOR name:<get-test6> visibility:public modality:FINAL <> () returnType:KFunction0<Unit> flags:
@@ -84,7 +84,7 @@ FILE fqName:<root> fileName:/reflectionLiterals.kt
         RETURN type=kotlin.Nothing from='<get-test6>(): KFunction0<Unit>'
           GET_FIELD 'test6: KFunction0<Unit>' type=kotlin.reflect.KFunction0<kotlin.Unit> origin=null
   PROPERTY name:test7 type:kotlin.reflect.KProperty0<kotlin.Int> visibility:public modality:FINAL flags:val
-    FIELD PROPERTY_BACKING_FIELD name:test7 type:kotlin.reflect.KProperty0<kotlin.Int> visibility:public
+    FIELD PROPERTY_BACKING_FIELD name:test7 type:kotlin.reflect.KProperty0<kotlin.Int> visibility:public flags:final
       EXPRESSION_BODY
         PROPERTY_REFERENCE 'qux: Int' field=null getter='<get-qux>(): Int' setter=null type=kotlin.reflect.KProperty0<kotlin.Int> origin=null
     FUN DEFAULT_PROPERTY_ACCESSOR name:<get-test7> visibility:public modality:FINAL <> () returnType:KProperty0<Int> flags:
diff --git a/compiler/testData/ir/irText/expressions/safeAssignment.txt b/compiler/testData/ir/irText/expressions/safeAssignment.txt
index 3c354d38fcd..35be3e2414e 100644
--- a/compiler/testData/ir/irText/expressions/safeAssignment.txt
+++ b/compiler/testData/ir/irText/expressions/safeAssignment.txt
@@ -9,7 +9,7 @@ FILE fqName:<root> fileName:/safeAssignment.kt
         DELEGATING_CONSTRUCTOR_CALL 'constructor Any()'
         INSTANCE_INITIALIZER_CALL classDescriptor='C'
     PROPERTY name:x type:kotlin.Int visibility:public modality:FINAL flags:var
-      FIELD PROPERTY_BACKING_FIELD name:x type:kotlin.Int visibility:public
+      FIELD PROPERTY_BACKING_FIELD name:x type:kotlin.Int visibility:public flags:final
         EXPRESSION_BODY
           GET_VAR 'value-parameter x: Int' type=kotlin.Int origin=INITIALIZE_PROPERTY_FROM_PARAMETER
       FUN DEFAULT_PROPERTY_ACCESSOR name:<get-x> visibility:public modality:FINAL <> ($this:C) returnType:Int flags:
diff --git a/compiler/testData/ir/irText/expressions/safeCalls.txt b/compiler/testData/ir/irText/expressions/safeCalls.txt
index e563cae2ca6..0cbd8ee3ad8 100644
--- a/compiler/testData/ir/irText/expressions/safeCalls.txt
+++ b/compiler/testData/ir/irText/expressions/safeCalls.txt
@@ -9,7 +9,7 @@ FILE fqName:<root> fileName:/safeCalls.kt
         DELEGATING_CONSTRUCTOR_CALL 'constructor Any()'
         INSTANCE_INITIALIZER_CALL classDescriptor='Ref'
     PROPERTY name:value type:kotlin.Int visibility:public modality:FINAL flags:var
-      FIELD PROPERTY_BACKING_FIELD name:value type:kotlin.Int visibility:public
+      FIELD PROPERTY_BACKING_FIELD name:value type:kotlin.Int visibility:public flags:final
         EXPRESSION_BODY
           GET_VAR 'value-parameter value: Int' type=kotlin.Int origin=INITIALIZE_PROPERTY_FROM_PARAMETER
       FUN DEFAULT_PROPERTY_ACCESSOR name:<get-value> visibility:public modality:FINAL <> ($this:Ref) returnType:Int flags:
diff --git a/compiler/testData/ir/irText/expressions/setFieldWithImplicitCast.txt b/compiler/testData/ir/irText/expressions/setFieldWithImplicitCast.txt
index dfc9592b5b6..d921d274aa5 100644
--- a/compiler/testData/ir/irText/expressions/setFieldWithImplicitCast.txt
+++ b/compiler/testData/ir/irText/expressions/setFieldWithImplicitCast.txt
@@ -23,7 +23,7 @@ FILE fqName:<root> fileName:/Derived.kt
                   typeOperand: CLASS IR_EXTERNAL_DECLARATION_STUB CLASS name:String modality:FINAL visibility:public flags:
                   GET_VAR 'value-parameter v: Any' type=kotlin.Any origin=null
     PROPERTY FAKE_OVERRIDE name:value type:kotlin.String! visibility:public modality:FINAL flags:var
-      FIELD FAKE_OVERRIDE name:value type:kotlin.String! visibility:public
+      FIELD FAKE_OVERRIDE name:value type:kotlin.String! visibility:public flags:final
     FUN FAKE_OVERRIDE name:equals visibility:public modality:OPEN <> ($this:kotlin.Any, other:kotlin.Any?) returnType:Boolean flags:
       overridden:
         FUN FAKE_OVERRIDE name:equals visibility:public modality:OPEN <> ($this:kotlin.Any, other:kotlin.Any?) returnType:Boolean flags:
diff --git a/compiler/testData/ir/irText/expressions/specializedTypeAliasConstructorCall.txt b/compiler/testData/ir/irText/expressions/specializedTypeAliasConstructorCall.txt
index 6e5e571e76e..7454d5d1f7d 100644
--- a/compiler/testData/ir/irText/expressions/specializedTypeAliasConstructorCall.txt
+++ b/compiler/testData/ir/irText/expressions/specializedTypeAliasConstructorCall.txt
@@ -12,7 +12,7 @@ FILE fqName:<root> fileName:/specializedTypeAliasConstructorCall.kt
         DELEGATING_CONSTRUCTOR_CALL 'constructor Any()'
         INSTANCE_INITIALIZER_CALL classDescriptor='Cell'
     PROPERTY name:value type:T visibility:public modality:FINAL flags:val
-      FIELD PROPERTY_BACKING_FIELD name:value type:T visibility:public
+      FIELD PROPERTY_BACKING_FIELD name:value type:T visibility:public flags:final
         EXPRESSION_BODY
           GET_VAR 'value-parameter value: T' type=T origin=INITIALIZE_PROPERTY_FROM_PARAMETER
       FUN DEFAULT_PROPERTY_ACCESSOR name:<get-value> visibility:public modality:FINAL <> ($this:Cell<T>) returnType:T flags:
diff --git a/compiler/testData/ir/irText/expressions/stringTemplates.txt b/compiler/testData/ir/irText/expressions/stringTemplates.txt
index 533068dc249..d07f8bc7e78 100644
--- a/compiler/testData/ir/irText/expressions/stringTemplates.txt
+++ b/compiler/testData/ir/irText/expressions/stringTemplates.txt
@@ -4,7 +4,7 @@ FILE fqName:<root> fileName:/stringTemplates.kt
       RETURN type=kotlin.Nothing from='foo(): String'
         CONST String type=kotlin.String value=
   PROPERTY name:x type:kotlin.Int visibility:public modality:FINAL flags:val
-    FIELD PROPERTY_BACKING_FIELD name:x type:kotlin.Int visibility:public
+    FIELD PROPERTY_BACKING_FIELD name:x type:kotlin.Int visibility:public flags:final
       EXPRESSION_BODY
         CONST Int type=kotlin.Int value=42
     FUN DEFAULT_PROPERTY_ACCESSOR name:<get-x> visibility:public modality:FINAL <> () returnType:Int flags:
@@ -12,7 +12,7 @@ FILE fqName:<root> fileName:/stringTemplates.kt
         RETURN type=kotlin.Nothing from='<get-x>(): Int'
           GET_FIELD 'x: Int' type=kotlin.Int origin=null
   PROPERTY name:test1 type:kotlin.String visibility:public modality:FINAL flags:val
-    FIELD PROPERTY_BACKING_FIELD name:test1 type:kotlin.String visibility:public
+    FIELD PROPERTY_BACKING_FIELD name:test1 type:kotlin.String visibility:public flags:final
       EXPRESSION_BODY
         CONST String type=kotlin.String value=
     FUN DEFAULT_PROPERTY_ACCESSOR name:<get-test1> visibility:public modality:FINAL <> () returnType:String flags:
@@ -20,7 +20,7 @@ FILE fqName:<root> fileName:/stringTemplates.kt
         RETURN type=kotlin.Nothing from='<get-test1>(): String'
           GET_FIELD 'test1: String' type=kotlin.String origin=null
   PROPERTY name:test2 type:kotlin.String visibility:public modality:FINAL flags:val
-    FIELD PROPERTY_BACKING_FIELD name:test2 type:kotlin.String visibility:public
+    FIELD PROPERTY_BACKING_FIELD name:test2 type:kotlin.String visibility:public flags:final
       EXPRESSION_BODY
         CONST String type=kotlin.String value=abc
     FUN DEFAULT_PROPERTY_ACCESSOR name:<get-test2> visibility:public modality:FINAL <> () returnType:String flags:
@@ -28,7 +28,7 @@ FILE fqName:<root> fileName:/stringTemplates.kt
         RETURN type=kotlin.Nothing from='<get-test2>(): String'
           GET_FIELD 'test2: String' type=kotlin.String origin=null
   PROPERTY name:test3 type:kotlin.String visibility:public modality:FINAL flags:val
-    FIELD PROPERTY_BACKING_FIELD name:test3 type:kotlin.String visibility:public
+    FIELD PROPERTY_BACKING_FIELD name:test3 type:kotlin.String visibility:public flags:final
       EXPRESSION_BODY
         CONST String type=kotlin.String value=
     FUN DEFAULT_PROPERTY_ACCESSOR name:<get-test3> visibility:public modality:FINAL <> () returnType:String flags:
@@ -36,7 +36,7 @@ FILE fqName:<root> fileName:/stringTemplates.kt
         RETURN type=kotlin.Nothing from='<get-test3>(): String'
           GET_FIELD 'test3: String' type=kotlin.String origin=null
   PROPERTY name:test4 type:kotlin.String visibility:public modality:FINAL flags:val
-    FIELD PROPERTY_BACKING_FIELD name:test4 type:kotlin.String visibility:public
+    FIELD PROPERTY_BACKING_FIELD name:test4 type:kotlin.String visibility:public flags:final
       EXPRESSION_BODY
         CONST String type=kotlin.String value=abc
     FUN DEFAULT_PROPERTY_ACCESSOR name:<get-test4> visibility:public modality:FINAL <> () returnType:String flags:
@@ -44,7 +44,7 @@ FILE fqName:<root> fileName:/stringTemplates.kt
         RETURN type=kotlin.Nothing from='<get-test4>(): String'
           GET_FIELD 'test4: String' type=kotlin.String origin=null
   PROPERTY name:test5 type:kotlin.String visibility:public modality:FINAL flags:val
-    FIELD PROPERTY_BACKING_FIELD name:test5 type:kotlin.String visibility:public
+    FIELD PROPERTY_BACKING_FIELD name:test5 type:kotlin.String visibility:public flags:final
       EXPRESSION_BODY
         STRING_CONCATENATION type=kotlin.String
           CONST String type=kotlin.String value=
@@ -57,7 +57,7 @@ FILE fqName:<root> fileName:/stringTemplates.kt
         RETURN type=kotlin.Nothing from='<get-test5>(): String'
           GET_FIELD 'test5: String' type=kotlin.String origin=null
   PROPERTY name:test6 type:kotlin.String visibility:public modality:FINAL flags:val
-    FIELD PROPERTY_BACKING_FIELD name:test6 type:kotlin.String visibility:public
+    FIELD PROPERTY_BACKING_FIELD name:test6 type:kotlin.String visibility:public flags:final
       EXPRESSION_BODY
         STRING_CONCATENATION type=kotlin.String
           CALL '<get-test1>(): String' type=kotlin.String origin=GET_PROPERTY
@@ -68,7 +68,7 @@ FILE fqName:<root> fileName:/stringTemplates.kt
         RETURN type=kotlin.Nothing from='<get-test6>(): String'
           GET_FIELD 'test6: String' type=kotlin.String origin=null
   PROPERTY name:test7 type:kotlin.String visibility:public modality:FINAL flags:val
-    FIELD PROPERTY_BACKING_FIELD name:test7 type:kotlin.String visibility:public
+    FIELD PROPERTY_BACKING_FIELD name:test7 type:kotlin.String visibility:public flags:final
       EXPRESSION_BODY
         STRING_CONCATENATION type=kotlin.String
           CALL '<get-test1>(): String' type=kotlin.String origin=GET_PROPERTY
@@ -77,7 +77,7 @@ FILE fqName:<root> fileName:/stringTemplates.kt
         RETURN type=kotlin.Nothing from='<get-test7>(): String'
           GET_FIELD 'test7: String' type=kotlin.String origin=null
   PROPERTY name:test8 type:kotlin.String visibility:public modality:FINAL flags:val
-    FIELD PROPERTY_BACKING_FIELD name:test8 type:kotlin.String visibility:public
+    FIELD PROPERTY_BACKING_FIELD name:test8 type:kotlin.String visibility:public flags:final
       EXPRESSION_BODY
         STRING_CONCATENATION type=kotlin.String
           CALL 'foo(): String' type=kotlin.String origin=null
@@ -86,7 +86,7 @@ FILE fqName:<root> fileName:/stringTemplates.kt
         RETURN type=kotlin.Nothing from='<get-test8>(): String'
           GET_FIELD 'test8: String' type=kotlin.String origin=null
   PROPERTY name:test9 type:kotlin.String visibility:public modality:FINAL flags:val
-    FIELD PROPERTY_BACKING_FIELD name:test9 type:kotlin.String visibility:public
+    FIELD PROPERTY_BACKING_FIELD name:test9 type:kotlin.String visibility:public flags:final
       EXPRESSION_BODY
         STRING_CONCATENATION type=kotlin.String
           CALL '<get-x>(): Int' type=kotlin.Int origin=GET_PROPERTY
diff --git a/compiler/testData/ir/irText/expressions/thisOfGenericOuterClass.txt b/compiler/testData/ir/irText/expressions/thisOfGenericOuterClass.txt
index 691ff344162..62025866417 100644
--- a/compiler/testData/ir/irText/expressions/thisOfGenericOuterClass.txt
+++ b/compiler/testData/ir/irText/expressions/thisOfGenericOuterClass.txt
@@ -12,7 +12,7 @@ FILE fqName:<root> fileName:/thisOfGenericOuterClass.kt
         DELEGATING_CONSTRUCTOR_CALL 'constructor Any()'
         INSTANCE_INITIALIZER_CALL classDescriptor='Outer'
     PROPERTY name:x type:T visibility:public modality:FINAL flags:val
-      FIELD PROPERTY_BACKING_FIELD name:x type:T visibility:public
+      FIELD PROPERTY_BACKING_FIELD name:x type:T visibility:public flags:final
         EXPRESSION_BODY
           GET_VAR 'value-parameter x: T' type=T origin=INITIALIZE_PROPERTY_FROM_PARAMETER
       FUN DEFAULT_PROPERTY_ACCESSOR name:<get-x> visibility:public modality:FINAL <> ($this:Outer<T>) returnType:T flags:
@@ -32,7 +32,7 @@ FILE fqName:<root> fileName:/thisOfGenericOuterClass.kt
           DELEGATING_CONSTRUCTOR_CALL 'constructor Any()'
           INSTANCE_INITIALIZER_CALL classDescriptor='Inner'
       PROPERTY name:y type:kotlin.Int visibility:public modality:FINAL flags:val
-        FIELD PROPERTY_BACKING_FIELD name:y type:kotlin.Int visibility:public
+        FIELD PROPERTY_BACKING_FIELD name:y type:kotlin.Int visibility:public flags:final
           EXPRESSION_BODY
             GET_VAR 'value-parameter y: Int' type=kotlin.Int origin=INITIALIZE_PROPERTY_FROM_PARAMETER
         FUN DEFAULT_PROPERTY_ACCESSOR name:<get-y> visibility:public modality:FINAL <> ($this:Outer<T>.Inner) returnType:Int flags:
@@ -83,7 +83,7 @@ FILE fqName:<root> fileName:/thisOfGenericOuterClass.kt
                   y: CONST Int type=kotlin.Int value=42
                 INSTANCE_INITIALIZER_CALL classDescriptor='<no name provided>'
             PROPERTY name:xx type:kotlin.Int visibility:public modality:FINAL flags:val
-              FIELD PROPERTY_BACKING_FIELD name:xx type:kotlin.Int visibility:public
+              FIELD PROPERTY_BACKING_FIELD name:xx type:kotlin.Int visibility:public flags:final
                 EXPRESSION_BODY
                   CALL 'plus(Int): Int' type=kotlin.Int origin=PLUS
                     $this: CALL '<get-x>(): Int' type=kotlin.Int origin=GET_PROPERTY
diff --git a/compiler/testData/ir/irText/expressions/useImportedMember.txt b/compiler/testData/ir/irText/expressions/useImportedMember.txt
index 85f316c9da4..0678475e3af 100644
--- a/compiler/testData/ir/irText/expressions/useImportedMember.txt
+++ b/compiler/testData/ir/irText/expressions/useImportedMember.txt
@@ -93,7 +93,7 @@ FILE fqName:<root> fileName:/useImportedMember.kt
         RETURN type=kotlin.Nothing from='f() on Boolean: Int'
           CONST Int type=kotlin.Int value=3
     PROPERTY name:p type:kotlin.Int visibility:public modality:FINAL flags:var
-      FIELD PROPERTY_BACKING_FIELD name:p type:kotlin.Int visibility:public
+      FIELD PROPERTY_BACKING_FIELD name:p type:kotlin.Int visibility:public flags:final
         EXPRESSION_BODY
           CONST Int type=kotlin.Int value=4
       FUN DEFAULT_PROPERTY_ACCESSOR name:<get-p> visibility:public modality:FINAL <> ($this:C) returnType:Int flags:
diff --git a/compiler/testData/ir/irText/expressions/values.txt b/compiler/testData/ir/irText/expressions/values.txt
index 1cb23e8881a..92e2afd1c18 100644
--- a/compiler/testData/ir/irText/expressions/values.txt
+++ b/compiler/testData/ir/irText/expressions/values.txt
@@ -77,7 +77,7 @@ FILE fqName:<root> fileName:/values.kt
         FUN IR_EXTERNAL_DECLARATION_STUB name:toString visibility:public modality:OPEN <> ($this:kotlin.Any) returnType:String flags:
       $this: VALUE_PARAMETER name:<this> type:kotlin.Any flags:
   PROPERTY name:a type:kotlin.Int visibility:public modality:FINAL flags:val
-    FIELD PROPERTY_BACKING_FIELD name:a type:kotlin.Int visibility:public
+    FIELD PROPERTY_BACKING_FIELD name:a type:kotlin.Int visibility:public flags:final
       EXPRESSION_BODY
         CONST Int type=kotlin.Int value=0
     FUN DEFAULT_PROPERTY_ACCESSOR name:<get-a> visibility:public modality:FINAL <> () returnType:Int flags:
diff --git a/compiler/testData/ir/irText/expressions/vararg.txt b/compiler/testData/ir/irText/expressions/vararg.txt
index 1074b65c8a4..472c1f5ad90 100644
--- a/compiler/testData/ir/irText/expressions/vararg.txt
+++ b/compiler/testData/ir/irText/expressions/vararg.txt
@@ -1,6 +1,6 @@
 FILE fqName:<root> fileName:/vararg.kt
   PROPERTY name:test1 type:kotlin.Array<kotlin.String> visibility:public modality:FINAL flags:val
-    FIELD PROPERTY_BACKING_FIELD name:test1 type:kotlin.Array<kotlin.String> visibility:public
+    FIELD PROPERTY_BACKING_FIELD name:test1 type:kotlin.Array<kotlin.String> visibility:public flags:final
       EXPRESSION_BODY
         CALL 'arrayOf(vararg String): Array<String>' type=kotlin.Array<kotlin.String> origin=null
           <reified T>: String
@@ -9,7 +9,7 @@ FILE fqName:<root> fileName:/vararg.kt
         RETURN type=kotlin.Nothing from='<get-test1>(): Array<String>'
           GET_FIELD 'test1: Array<String>' type=kotlin.Array<kotlin.String> origin=null
   PROPERTY name:test2 type:kotlin.Array<kotlin.String> visibility:public modality:FINAL flags:val
-    FIELD PROPERTY_BACKING_FIELD name:test2 type:kotlin.Array<kotlin.String> visibility:public
+    FIELD PROPERTY_BACKING_FIELD name:test2 type:kotlin.Array<kotlin.String> visibility:public flags:final
       EXPRESSION_BODY
         CALL 'arrayOf(vararg String): Array<String>' type=kotlin.Array<kotlin.String> origin=null
           <reified T>: String
@@ -22,7 +22,7 @@ FILE fqName:<root> fileName:/vararg.kt
         RETURN type=kotlin.Nothing from='<get-test2>(): Array<String>'
           GET_FIELD 'test2: Array<String>' type=kotlin.Array<kotlin.String> origin=null
   PROPERTY name:test3 type:kotlin.Array<kotlin.String> visibility:public modality:FINAL flags:val
-    FIELD PROPERTY_BACKING_FIELD name:test3 type:kotlin.Array<kotlin.String> visibility:public
+    FIELD PROPERTY_BACKING_FIELD name:test3 type:kotlin.Array<kotlin.String> visibility:public flags:final
       EXPRESSION_BODY
         CALL 'arrayOf(vararg String): Array<String>' type=kotlin.Array<kotlin.String> origin=null
           <reified T>: String
diff --git a/compiler/testData/ir/irText/lambdas/anonymousFunction.txt b/compiler/testData/ir/irText/lambdas/anonymousFunction.txt
index 71d6ccfbacf..c11c1403b96 100644
--- a/compiler/testData/ir/irText/lambdas/anonymousFunction.txt
+++ b/compiler/testData/ir/irText/lambdas/anonymousFunction.txt
@@ -1,6 +1,6 @@
 FILE fqName:<root> fileName:/anonymousFunction.kt
   PROPERTY name:anonymous type:() -> kotlin.Unit visibility:public modality:FINAL flags:val
-    FIELD PROPERTY_BACKING_FIELD name:anonymous type:() -> kotlin.Unit visibility:public
+    FIELD PROPERTY_BACKING_FIELD name:anonymous type:() -> kotlin.Unit visibility:public flags:final
       EXPRESSION_BODY
         BLOCK type=() -> kotlin.Unit origin=ANONYMOUS_FUNCTION
           FUN name:<no name provided> visibility:local modality:FINAL <> () returnType:Unit flags:
diff --git a/compiler/testData/ir/irText/lambdas/destructuringInLambda.txt b/compiler/testData/ir/irText/lambdas/destructuringInLambda.txt
index 63c32614141..94a7b699462 100644
--- a/compiler/testData/ir/irText/lambdas/destructuringInLambda.txt
+++ b/compiler/testData/ir/irText/lambdas/destructuringInLambda.txt
@@ -10,7 +10,7 @@ FILE fqName:<root> fileName:/destructuringInLambda.kt
         DELEGATING_CONSTRUCTOR_CALL 'constructor Any()'
         INSTANCE_INITIALIZER_CALL classDescriptor='A'
     PROPERTY name:x type:kotlin.Int visibility:public modality:FINAL flags:val
-      FIELD PROPERTY_BACKING_FIELD name:x type:kotlin.Int visibility:public
+      FIELD PROPERTY_BACKING_FIELD name:x type:kotlin.Int visibility:public flags:final
         EXPRESSION_BODY
           GET_VAR 'value-parameter x: Int' type=kotlin.Int origin=INITIALIZE_PROPERTY_FROM_PARAMETER
       FUN DEFAULT_PROPERTY_ACCESSOR name:<get-x> visibility:public modality:FINAL <> ($this:A) returnType:Int flags:
@@ -20,7 +20,7 @@ FILE fqName:<root> fileName:/destructuringInLambda.kt
             GET_FIELD 'x: Int' type=kotlin.Int origin=null
               receiver: GET_VAR 'this@A: A' type=A origin=null
     PROPERTY name:y type:kotlin.Int visibility:public modality:FINAL flags:val
-      FIELD PROPERTY_BACKING_FIELD name:y type:kotlin.Int visibility:public
+      FIELD PROPERTY_BACKING_FIELD name:y type:kotlin.Int visibility:public flags:final
         EXPRESSION_BODY
           GET_VAR 'value-parameter y: Int' type=kotlin.Int origin=INITIALIZE_PROPERTY_FROM_PARAMETER
       FUN DEFAULT_PROPERTY_ACCESSOR name:<get-y> visibility:public modality:FINAL <> ($this:A) returnType:Int flags:
@@ -140,7 +140,7 @@ FILE fqName:<root> fileName:/destructuringInLambda.kt
         RETURN type=kotlin.Nothing from='equals(Any?): Boolean'
           CONST Boolean type=kotlin.Boolean value=true
   PROPERTY name:fn type:(A) -> kotlin.Int visibility:public modality:FINAL flags:var
-    FIELD PROPERTY_BACKING_FIELD name:fn type:(A) -> kotlin.Int visibility:public
+    FIELD PROPERTY_BACKING_FIELD name:fn type:(A) -> kotlin.Int visibility:public flags:final
       EXPRESSION_BODY
         BLOCK type=(A) -> kotlin.Int origin=LAMBDA
           FUN LOCAL_FUNCTION_FOR_LAMBDA name:<anonymous> visibility:local modality:FINAL <> (<name for destructuring parameter 0>:A) returnType:Int flags:
diff --git a/compiler/testData/ir/irText/lambdas/justLambda.txt b/compiler/testData/ir/irText/lambdas/justLambda.txt
index 0b5ffbaa58f..2483ca1244a 100644
--- a/compiler/testData/ir/irText/lambdas/justLambda.txt
+++ b/compiler/testData/ir/irText/lambdas/justLambda.txt
@@ -1,6 +1,6 @@
 FILE fqName:<root> fileName:/justLambda.kt
   PROPERTY name:test1 type:() -> kotlin.Int visibility:public modality:FINAL flags:val
-    FIELD PROPERTY_BACKING_FIELD name:test1 type:() -> kotlin.Int visibility:public
+    FIELD PROPERTY_BACKING_FIELD name:test1 type:() -> kotlin.Int visibility:public flags:final
       EXPRESSION_BODY
         BLOCK type=() -> kotlin.Int origin=LAMBDA
           FUN LOCAL_FUNCTION_FOR_LAMBDA name:<anonymous> visibility:local modality:FINAL <> () returnType:Int flags:
@@ -13,7 +13,7 @@ FILE fqName:<root> fileName:/justLambda.kt
         RETURN type=kotlin.Nothing from='<get-test1>(): () -> Int'
           GET_FIELD 'test1: () -> Int' type=() -> kotlin.Int origin=null
   PROPERTY name:test2 type:() -> kotlin.Unit visibility:public modality:FINAL flags:val
-    FIELD PROPERTY_BACKING_FIELD name:test2 type:() -> kotlin.Unit visibility:public
+    FIELD PROPERTY_BACKING_FIELD name:test2 type:() -> kotlin.Unit visibility:public flags:final
       EXPRESSION_BODY
         BLOCK type=() -> kotlin.Unit origin=LAMBDA
           FUN LOCAL_FUNCTION_FOR_LAMBDA name:<anonymous> visibility:local modality:FINAL <> () returnType:Unit flags:
diff --git a/compiler/testData/ir/irText/regressions/integerCoercionToT.txt b/compiler/testData/ir/irText/regressions/integerCoercionToT.txt
index 320546c74b9..b579b446c7c 100644
--- a/compiler/testData/ir/irText/regressions/integerCoercionToT.txt
+++ b/compiler/testData/ir/irText/regressions/integerCoercionToT.txt
@@ -75,7 +75,7 @@ FILE fqName:<root> fileName:/integerCoercionToT.kt
         DELEGATING_CONSTRUCTOR_CALL 'constructor Any()'
         INSTANCE_INITIALIZER_CALL classDescriptor='IdType'
     PROPERTY name:value type:kotlin.Int visibility:public modality:FINAL flags:val
-      FIELD PROPERTY_BACKING_FIELD name:value type:kotlin.Int visibility:public
+      FIELD PROPERTY_BACKING_FIELD name:value type:kotlin.Int visibility:public flags:final
         EXPRESSION_BODY
           GET_VAR 'value-parameter value: Int' type=kotlin.Int origin=INITIALIZE_PROPERTY_FROM_PARAMETER
       FUN DEFAULT_PROPERTY_ACCESSOR name:<get-value> visibility:public modality:FINAL <> ($this:IdType) returnType:Int flags:
diff --git a/compiler/testData/ir/irText/regressions/typeAliasCtorForGenericClass.txt b/compiler/testData/ir/irText/regressions/typeAliasCtorForGenericClass.txt
index 2dae7a40775..44c88c9e2bb 100644
--- a/compiler/testData/ir/irText/regressions/typeAliasCtorForGenericClass.txt
+++ b/compiler/testData/ir/irText/regressions/typeAliasCtorForGenericClass.txt
@@ -12,7 +12,7 @@ FILE fqName:<root> fileName:/typeAliasCtorForGenericClass.kt
         DELEGATING_CONSTRUCTOR_CALL 'constructor Any()'
         INSTANCE_INITIALIZER_CALL classDescriptor='A'
     PROPERTY name:q type:Q visibility:public modality:FINAL flags:val
-      FIELD PROPERTY_BACKING_FIELD name:q type:Q visibility:public
+      FIELD PROPERTY_BACKING_FIELD name:q type:Q visibility:public flags:final
         EXPRESSION_BODY
           GET_VAR 'value-parameter q: Q' type=Q origin=INITIALIZE_PROPERTY_FROM_PARAMETER
       FUN DEFAULT_PROPERTY_ACCESSOR name:<get-q> visibility:public modality:FINAL <> ($this:A<Q>) returnType:Q flags:
diff --git a/compiler/testData/ir/irText/stubs/builtinMap__dependenciesoftestmodule.txt b/compiler/testData/ir/irText/stubs/builtinMap__dependenciesoftestmodule.txt
index df3e7dffa6d..51072e7d9c3 100644
--- a/compiler/testData/ir/irText/stubs/builtinMap__dependenciesoftestmodule.txt
+++ b/compiler/testData/ir/irText/stubs/builtinMap__dependenciesoftestmodule.txt
@@ -233,11 +233,11 @@ MODULE_FRAGMENT name:<dependencies of test-module>
         FUN IR_EXTERNAL_DECLARATION_STUB name:nextNode visibility:public/*package*/ modality:FINAL <> ($this:java.util.LinkedHashMap<K, V>.LinkedHashIterator) returnType:(java.util.LinkedHashMap.Entry<(K..K?), (V..V?)>..java.util.LinkedHashMap.Entry<(K..K?), (V..V?)>?) flags:
           $this: VALUE_PARAMETER IR_EXTERNAL_DECLARATION_STUB name:<this> type:java.util.LinkedHashMap<K, V>.LinkedHashIterator flags:
         PROPERTY IR_EXTERNAL_DECLARATION_STUB name:current type:java.util.LinkedHashMap.Entry<K!, V!>! visibility:public/*package*/ modality:FINAL flags:var
-          FIELD IR_EXTERNAL_DECLARATION_STUB name:current type:java.util.LinkedHashMap.Entry<K!, V!>! visibility:public/*package*/
+          FIELD IR_EXTERNAL_DECLARATION_STUB name:current type:java.util.LinkedHashMap.Entry<K!, V!>! visibility:public/*package*/ flags:final
         PROPERTY IR_EXTERNAL_DECLARATION_STUB name:expectedModCount type:kotlin.Int visibility:public/*package*/ modality:FINAL flags:var
-          FIELD IR_EXTERNAL_DECLARATION_STUB name:expectedModCount type:kotlin.Int visibility:public/*package*/
+          FIELD IR_EXTERNAL_DECLARATION_STUB name:expectedModCount type:kotlin.Int visibility:public/*package*/ flags:final
         PROPERTY IR_EXTERNAL_DECLARATION_STUB name:next type:java.util.LinkedHashMap.Entry<K!, V!>! visibility:public/*package*/ modality:FINAL flags:var
-          FIELD IR_EXTERNAL_DECLARATION_STUB name:next type:java.util.LinkedHashMap.Entry<K!, V!>! visibility:public/*package*/
+          FIELD IR_EXTERNAL_DECLARATION_STUB name:next type:java.util.LinkedHashMap.Entry<K!, V!>! visibility:public/*package*/ flags:final
       CLASS IR_EXTERNAL_DECLARATION_STUB CLASS name:LinkedEntryIterator modality:FINAL visibility:public/*package*/ flags:
         $this: VALUE_PARAMETER IR_EXTERNAL_DECLARATION_STUB name:<this> type:java.util.LinkedHashMap<K, V>.LinkedEntryIterator flags:
         superClasses:
@@ -285,11 +285,11 @@ MODULE_FRAGMENT name:<dependencies of test-module>
             FUN IR_EXTERNAL_DECLARATION_STUB name:nextNode visibility:public/*package*/ modality:FINAL <> ($this:java.util.LinkedHashMap<K, V>.LinkedHashIterator) returnType:(java.util.LinkedHashMap.Entry<(K..K?), (V..V?)>..java.util.LinkedHashMap.Entry<(K..K?), (V..V?)>?) flags:
           $this: VALUE_PARAMETER IR_EXTERNAL_DECLARATION_STUB name:<this> type:java.util.LinkedHashMap<K!, V!>.LinkedHashIterator flags:
         PROPERTY IR_EXTERNAL_DECLARATION_STUB name:current type:java.util.LinkedHashMap.Entry<K!, V!>! visibility:public/*package*/ modality:FINAL flags:var
-          FIELD IR_EXTERNAL_DECLARATION_STUB name:current type:java.util.LinkedHashMap.Entry<K!, V!>! visibility:public/*package*/
+          FIELD IR_EXTERNAL_DECLARATION_STUB name:current type:java.util.LinkedHashMap.Entry<K!, V!>! visibility:public/*package*/ flags:final
         PROPERTY IR_EXTERNAL_DECLARATION_STUB name:expectedModCount type:kotlin.Int visibility:public/*package*/ modality:FINAL flags:var
-          FIELD IR_EXTERNAL_DECLARATION_STUB name:expectedModCount type:kotlin.Int visibility:public/*package*/
+          FIELD IR_EXTERNAL_DECLARATION_STUB name:expectedModCount type:kotlin.Int visibility:public/*package*/ flags:final
         PROPERTY IR_EXTERNAL_DECLARATION_STUB name:next type:java.util.LinkedHashMap.Entry<K!, V!>! visibility:public/*package*/ modality:FINAL flags:var
-          FIELD IR_EXTERNAL_DECLARATION_STUB name:next type:java.util.LinkedHashMap.Entry<K!, V!>! visibility:public/*package*/
+          FIELD IR_EXTERNAL_DECLARATION_STUB name:next type:java.util.LinkedHashMap.Entry<K!, V!>! visibility:public/*package*/ flags:final
       CLASS IR_EXTERNAL_DECLARATION_STUB CLASS name:LinkedEntrySet modality:FINAL visibility:public/*package*/ flags:
         $this: VALUE_PARAMETER IR_EXTERNAL_DECLARATION_STUB name:<this> type:java.util.LinkedHashMap<K, V>.LinkedEntrySet flags:
         superClasses:
@@ -394,7 +394,7 @@ MODULE_FRAGMENT name:<dependencies of test-module>
             UNBOUND: fun toString(): kotlin.String
           $this: VALUE_PARAMETER IR_EXTERNAL_DECLARATION_STUB name:<this> type:java.util.AbstractCollection<kotlin.collections.(Mutable)Map.(Mutable)Entry<K!, V!>!> flags:
         PROPERTY IR_EXTERNAL_DECLARATION_STUB name:MAX_ARRAY_SIZE type:kotlin.Int visibility:invisible_fake modality:FINAL flags:constmval
-          FIELD IR_EXTERNAL_DECLARATION_STUB name:MAX_ARRAY_SIZE type:kotlin.Int visibility:invisible_fake
+          FIELD IR_EXTERNAL_DECLARATION_STUB name:MAX_ARRAY_SIZE type:kotlin.Int visibility:invisible_fake flags:final
         FUN FAKE_OVERRIDE name:finishToArray visibility:invisible_fake modality:OPEN <T> (p0:kotlin.Array<(out) T!>!, p1:kotlin.collections.(Mutable)Iterator<*>!) returnType:(kotlin.Array<(T..T?)>..kotlin.Array<out (T..T?)>?) flags:
           overridden:
             UNBOUND: fun <T : kotlin.Any!> finishToArray(p0: kotlin.Array<(out) T!>!, p1: kotlin.collections.(Mutable)Iterator<*>!): kotlin.Array<(out) T!>!
@@ -452,11 +452,11 @@ MODULE_FRAGMENT name:<dependencies of test-module>
             FUN IR_EXTERNAL_DECLARATION_STUB name:nextNode visibility:public/*package*/ modality:FINAL <> ($this:java.util.LinkedHashMap<K, V>.LinkedHashIterator) returnType:(java.util.LinkedHashMap.Entry<(K..K?), (V..V?)>..java.util.LinkedHashMap.Entry<(K..K?), (V..V?)>?) flags:
           $this: VALUE_PARAMETER IR_EXTERNAL_DECLARATION_STUB name:<this> type:java.util.LinkedHashMap<K!, V!>.LinkedHashIterator flags:
         PROPERTY IR_EXTERNAL_DECLARATION_STUB name:current type:java.util.LinkedHashMap.Entry<K!, V!>! visibility:public/*package*/ modality:FINAL flags:var
-          FIELD IR_EXTERNAL_DECLARATION_STUB name:current type:java.util.LinkedHashMap.Entry<K!, V!>! visibility:public/*package*/
+          FIELD IR_EXTERNAL_DECLARATION_STUB name:current type:java.util.LinkedHashMap.Entry<K!, V!>! visibility:public/*package*/ flags:final
         PROPERTY IR_EXTERNAL_DECLARATION_STUB name:expectedModCount type:kotlin.Int visibility:public/*package*/ modality:FINAL flags:var
-          FIELD IR_EXTERNAL_DECLARATION_STUB name:expectedModCount type:kotlin.Int visibility:public/*package*/
+          FIELD IR_EXTERNAL_DECLARATION_STUB name:expectedModCount type:kotlin.Int visibility:public/*package*/ flags:final
         PROPERTY IR_EXTERNAL_DECLARATION_STUB name:next type:java.util.LinkedHashMap.Entry<K!, V!>! visibility:public/*package*/ modality:FINAL flags:var
-          FIELD IR_EXTERNAL_DECLARATION_STUB name:next type:java.util.LinkedHashMap.Entry<K!, V!>! visibility:public/*package*/
+          FIELD IR_EXTERNAL_DECLARATION_STUB name:next type:java.util.LinkedHashMap.Entry<K!, V!>! visibility:public/*package*/ flags:final
       CLASS IR_EXTERNAL_DECLARATION_STUB CLASS name:LinkedKeySet modality:FINAL visibility:public/*package*/ flags:
         $this: VALUE_PARAMETER IR_EXTERNAL_DECLARATION_STUB name:<this> type:java.util.LinkedHashMap<K, V>.LinkedKeySet flags:
         superClasses:
@@ -561,7 +561,7 @@ MODULE_FRAGMENT name:<dependencies of test-module>
             UNBOUND: fun toString(): kotlin.String
           $this: VALUE_PARAMETER IR_EXTERNAL_DECLARATION_STUB name:<this> type:java.util.AbstractCollection<K!> flags:
         PROPERTY IR_EXTERNAL_DECLARATION_STUB name:MAX_ARRAY_SIZE type:kotlin.Int visibility:invisible_fake modality:FINAL flags:constmval
-          FIELD IR_EXTERNAL_DECLARATION_STUB name:MAX_ARRAY_SIZE type:kotlin.Int visibility:invisible_fake
+          FIELD IR_EXTERNAL_DECLARATION_STUB name:MAX_ARRAY_SIZE type:kotlin.Int visibility:invisible_fake flags:final
         FUN FAKE_OVERRIDE name:finishToArray visibility:invisible_fake modality:OPEN <T> (p0:kotlin.Array<(out) T!>!, p1:kotlin.collections.(Mutable)Iterator<*>!) returnType:(kotlin.Array<(T..T?)>..kotlin.Array<out (T..T?)>?) flags:
           overridden:
             UNBOUND: fun <T : kotlin.Any!> finishToArray(p0: kotlin.Array<(out) T!>!, p1: kotlin.collections.(Mutable)Iterator<*>!): kotlin.Array<(out) T!>!
@@ -619,11 +619,11 @@ MODULE_FRAGMENT name:<dependencies of test-module>
             FUN IR_EXTERNAL_DECLARATION_STUB name:nextNode visibility:public/*package*/ modality:FINAL <> ($this:java.util.LinkedHashMap<K, V>.LinkedHashIterator) returnType:(java.util.LinkedHashMap.Entry<(K..K?), (V..V?)>..java.util.LinkedHashMap.Entry<(K..K?), (V..V?)>?) flags:
           $this: VALUE_PARAMETER IR_EXTERNAL_DECLARATION_STUB name:<this> type:java.util.LinkedHashMap<K!, V!>.LinkedHashIterator flags:
         PROPERTY IR_EXTERNAL_DECLARATION_STUB name:current type:java.util.LinkedHashMap.Entry<K!, V!>! visibility:public/*package*/ modality:FINAL flags:var
-          FIELD IR_EXTERNAL_DECLARATION_STUB name:current type:java.util.LinkedHashMap.Entry<K!, V!>! visibility:public/*package*/
+          FIELD IR_EXTERNAL_DECLARATION_STUB name:current type:java.util.LinkedHashMap.Entry<K!, V!>! visibility:public/*package*/ flags:final
         PROPERTY IR_EXTERNAL_DECLARATION_STUB name:expectedModCount type:kotlin.Int visibility:public/*package*/ modality:FINAL flags:var
-          FIELD IR_EXTERNAL_DECLARATION_STUB name:expectedModCount type:kotlin.Int visibility:public/*package*/
+          FIELD IR_EXTERNAL_DECLARATION_STUB name:expectedModCount type:kotlin.Int visibility:public/*package*/ flags:final
         PROPERTY IR_EXTERNAL_DECLARATION_STUB name:next type:java.util.LinkedHashMap.Entry<K!, V!>! visibility:public/*package*/ modality:FINAL flags:var
-          FIELD IR_EXTERNAL_DECLARATION_STUB name:next type:java.util.LinkedHashMap.Entry<K!, V!>! visibility:public/*package*/
+          FIELD IR_EXTERNAL_DECLARATION_STUB name:next type:java.util.LinkedHashMap.Entry<K!, V!>! visibility:public/*package*/ flags:final
       CLASS IR_EXTERNAL_DECLARATION_STUB CLASS name:LinkedValues modality:FINAL visibility:public/*package*/ flags:
         $this: VALUE_PARAMETER IR_EXTERNAL_DECLARATION_STUB name:<this> type:java.util.LinkedHashMap<K, V>.LinkedValues flags:
         superClasses:
@@ -728,7 +728,7 @@ MODULE_FRAGMENT name:<dependencies of test-module>
             UNBOUND: fun toString(): kotlin.String
           $this: VALUE_PARAMETER IR_EXTERNAL_DECLARATION_STUB name:<this> type:java.util.AbstractCollection<V!> flags:
         PROPERTY IR_EXTERNAL_DECLARATION_STUB name:MAX_ARRAY_SIZE type:kotlin.Int visibility:invisible_fake modality:FINAL flags:constmval
-          FIELD IR_EXTERNAL_DECLARATION_STUB name:MAX_ARRAY_SIZE type:kotlin.Int visibility:invisible_fake
+          FIELD IR_EXTERNAL_DECLARATION_STUB name:MAX_ARRAY_SIZE type:kotlin.Int visibility:invisible_fake flags:final
         FUN FAKE_OVERRIDE name:finishToArray visibility:invisible_fake modality:OPEN <T> (p0:kotlin.Array<(out) T!>!, p1:kotlin.collections.(Mutable)Iterator<*>!) returnType:(kotlin.Array<(T..T?)>..kotlin.Array<out (T..T?)>?) flags:
           overridden:
             UNBOUND: fun <T : kotlin.Any!> finishToArray(p0: kotlin.Array<(out) T!>!, p1: kotlin.collections.(Mutable)Iterator<*>!): kotlin.Array<(out) T!>!
@@ -788,27 +788,27 @@ MODULE_FRAGMENT name:<dependencies of test-module>
         VALUE_PARAMETER IR_EXTERNAL_DECLARATION_STUB name:p0 index:0 type:kotlin.Array<(out) java.util.HashMap.Node<K!, V!>!>! flags:
         VALUE_PARAMETER IR_EXTERNAL_DECLARATION_STUB name:p1 index:1 type:kotlin.Int flags:
       PROPERTY IR_EXTERNAL_DECLARATION_STUB name:loadFactor type:kotlin.Float visibility:public/*package*/ modality:FINAL flags:val
-        FIELD IR_EXTERNAL_DECLARATION_STUB name:loadFactor type:kotlin.Float visibility:public/*package*/
+        FIELD IR_EXTERNAL_DECLARATION_STUB name:loadFactor type:kotlin.Float visibility:public/*package*/ flags:final
       PROPERTY IR_EXTERNAL_DECLARATION_STUB name:entrySet type:kotlin.collections.(Mutable)Set<kotlin.collections.(Mutable)Map.(Mutable)Entry<K!, V!>!>! visibility:public/*package*/ modality:FINAL flags:var
-        FIELD IR_EXTERNAL_DECLARATION_STUB name:entrySet type:kotlin.collections.(Mutable)Set<kotlin.collections.(Mutable)Map.(Mutable)Entry<K!, V!>!>! visibility:public/*package*/
+        FIELD IR_EXTERNAL_DECLARATION_STUB name:entrySet type:kotlin.collections.(Mutable)Set<kotlin.collections.(Mutable)Map.(Mutable)Entry<K!, V!>!>! visibility:public/*package*/ flags:final
       PROPERTY IR_EXTERNAL_DECLARATION_STUB name:keySet type:kotlin.collections.(Mutable)Set<K!>! visibility:public/*package*/ modality:FINAL flags:var
-        FIELD IR_EXTERNAL_DECLARATION_STUB name:keySet type:kotlin.collections.(Mutable)Set<K!>! visibility:public/*package*/
+        FIELD IR_EXTERNAL_DECLARATION_STUB name:keySet type:kotlin.collections.(Mutable)Set<K!>! visibility:public/*package*/ flags:final
       PROPERTY IR_EXTERNAL_DECLARATION_STUB name:modCount type:kotlin.Int visibility:public/*package*/ modality:FINAL flags:var
-        FIELD IR_EXTERNAL_DECLARATION_STUB name:modCount type:kotlin.Int visibility:public/*package*/
+        FIELD IR_EXTERNAL_DECLARATION_STUB name:modCount type:kotlin.Int visibility:public/*package*/ flags:final
       PROPERTY IR_EXTERNAL_DECLARATION_STUB name:size type:kotlin.Int visibility:public/*package*/ modality:FINAL flags:var
-        FIELD IR_EXTERNAL_DECLARATION_STUB name:size type:kotlin.Int visibility:public/*package*/
+        FIELD IR_EXTERNAL_DECLARATION_STUB name:size type:kotlin.Int visibility:public/*package*/ flags:final
       PROPERTY IR_EXTERNAL_DECLARATION_STUB name:table type:kotlin.Array<(out) java.util.HashMap.Node<K!, V!>!>! visibility:public/*package*/ modality:FINAL flags:var
-        FIELD IR_EXTERNAL_DECLARATION_STUB name:table type:kotlin.Array<(out) java.util.HashMap.Node<K!, V!>!>! visibility:public/*package*/
+        FIELD IR_EXTERNAL_DECLARATION_STUB name:table type:kotlin.Array<(out) java.util.HashMap.Node<K!, V!>!>! visibility:public/*package*/ flags:final
       PROPERTY IR_EXTERNAL_DECLARATION_STUB name:threshold type:kotlin.Int visibility:public/*package*/ modality:FINAL flags:var
-        FIELD IR_EXTERNAL_DECLARATION_STUB name:threshold type:kotlin.Int visibility:public/*package*/
+        FIELD IR_EXTERNAL_DECLARATION_STUB name:threshold type:kotlin.Int visibility:public/*package*/ flags:final
       PROPERTY IR_EXTERNAL_DECLARATION_STUB name:values type:kotlin.collections.(Mutable)Collection<V!>! visibility:public/*package*/ modality:FINAL flags:var
-        FIELD IR_EXTERNAL_DECLARATION_STUB name:values type:kotlin.collections.(Mutable)Collection<V!>! visibility:public/*package*/
+        FIELD IR_EXTERNAL_DECLARATION_STUB name:values type:kotlin.collections.(Mutable)Collection<V!>! visibility:public/*package*/ flags:final
       PROPERTY IR_EXTERNAL_DECLARATION_STUB name:accessOrder type:kotlin.Boolean visibility:public/*package*/ modality:FINAL flags:val
-        FIELD IR_EXTERNAL_DECLARATION_STUB name:accessOrder type:kotlin.Boolean visibility:public/*package*/
+        FIELD IR_EXTERNAL_DECLARATION_STUB name:accessOrder type:kotlin.Boolean visibility:public/*package*/ flags:final
       PROPERTY IR_EXTERNAL_DECLARATION_STUB name:head type:java.util.LinkedHashMap.Entry<K!, V!>! visibility:public/*package*/ modality:FINAL flags:var
-        FIELD IR_EXTERNAL_DECLARATION_STUB name:head type:java.util.LinkedHashMap.Entry<K!, V!>! visibility:public/*package*/
+        FIELD IR_EXTERNAL_DECLARATION_STUB name:head type:java.util.LinkedHashMap.Entry<K!, V!>! visibility:public/*package*/ flags:final
       PROPERTY IR_EXTERNAL_DECLARATION_STUB name:tail type:java.util.LinkedHashMap.Entry<K!, V!>! visibility:public/*package*/ modality:FINAL flags:var
-        FIELD IR_EXTERNAL_DECLARATION_STUB name:tail type:java.util.LinkedHashMap.Entry<K!, V!>! visibility:public/*package*/
+        FIELD IR_EXTERNAL_DECLARATION_STUB name:tail type:java.util.LinkedHashMap.Entry<K!, V!>! visibility:public/*package*/ flags:final
       CLASS IR_EXTERNAL_DECLARATION_STUB CLASS name:Entry modality:OPEN visibility:public/*package*/ flags:
         $this: VALUE_PARAMETER IR_EXTERNAL_DECLARATION_STUB name:<this> type:java.util.LinkedHashMap.Entry<K, V> flags:
         superClasses:
@@ -849,17 +849,17 @@ MODULE_FRAGMENT name:<dependencies of test-module>
               FUN IR_EXTERNAL_DECLARATION_STUB name:<get-value> visibility:public modality:FINAL <> ($this:java.util.HashMap.Node<K, V>) returnType:(V..V?) flags:
             $this: VALUE_PARAMETER IR_EXTERNAL_DECLARATION_STUB name:<this> type:java.util.HashMap.Node<K!, V!> flags:
         PROPERTY IR_EXTERNAL_DECLARATION_STUB name:hash type:kotlin.Int visibility:public/*package*/ modality:FINAL flags:val
-          FIELD IR_EXTERNAL_DECLARATION_STUB name:hash type:kotlin.Int visibility:public/*package*/
+          FIELD IR_EXTERNAL_DECLARATION_STUB name:hash type:kotlin.Int visibility:public/*package*/ flags:final
         PROPERTY IR_EXTERNAL_DECLARATION_STUB name:key type:K! visibility:public/*package*/ modality:FINAL flags:val
-          FIELD IR_EXTERNAL_DECLARATION_STUB name:key type:K! visibility:public/*package*/
+          FIELD IR_EXTERNAL_DECLARATION_STUB name:key type:K! visibility:public/*package*/ flags:final
         PROPERTY IR_EXTERNAL_DECLARATION_STUB name:next type:java.util.HashMap.Node<K!, V!>! visibility:public/*package*/ modality:FINAL flags:var
-          FIELD IR_EXTERNAL_DECLARATION_STUB name:next type:java.util.HashMap.Node<K!, V!>! visibility:public/*package*/
+          FIELD IR_EXTERNAL_DECLARATION_STUB name:next type:java.util.HashMap.Node<K!, V!>! visibility:public/*package*/ flags:final
         PROPERTY IR_EXTERNAL_DECLARATION_STUB name:value type:V! visibility:public/*package*/ modality:FINAL flags:var
-          FIELD IR_EXTERNAL_DECLARATION_STUB name:value type:V! visibility:public/*package*/
+          FIELD IR_EXTERNAL_DECLARATION_STUB name:value type:V! visibility:public/*package*/ flags:final
         PROPERTY IR_EXTERNAL_DECLARATION_STUB name:after type:java.util.LinkedHashMap.Entry<K!, V!>! visibility:public/*package*/ modality:FINAL flags:var
-          FIELD IR_EXTERNAL_DECLARATION_STUB name:after type:java.util.LinkedHashMap.Entry<K!, V!>! visibility:public/*package*/
+          FIELD IR_EXTERNAL_DECLARATION_STUB name:after type:java.util.LinkedHashMap.Entry<K!, V!>! visibility:public/*package*/ flags:final
         PROPERTY IR_EXTERNAL_DECLARATION_STUB name:before type:java.util.LinkedHashMap.Entry<K!, V!>! visibility:public/*package*/ modality:FINAL flags:var
-          FIELD IR_EXTERNAL_DECLARATION_STUB name:before type:java.util.LinkedHashMap.Entry<K!, V!>! visibility:public/*package*/
+          FIELD IR_EXTERNAL_DECLARATION_STUB name:before type:java.util.LinkedHashMap.Entry<K!, V!>! visibility:public/*package*/ flags:final
       FUN IR_EXTERNAL_DECLARATION_STUB name:afterNodeAccess visibility:public/*package*/ modality:OPEN <> ($this:java.util.LinkedHashMap<K, V>, p0:java.util.HashMap.Node<K!, V!>!) returnType:Unit flags:
         overridden:
           FUN IR_EXTERNAL_DECLARATION_STUB name:afterNodeAccess visibility:public/*package*/ modality:OPEN <> ($this:java.util.HashMap<K, V>, p0:java.util.HashMap.Node<K!, V!>!) returnType:Unit flags:
@@ -918,19 +918,19 @@ MODULE_FRAGMENT name:<dependencies of test-module>
         VALUE_PARAMETER IR_EXTERNAL_DECLARATION_STUB name:p0 index:0 type:kotlin.Any! flags:
         VALUE_PARAMETER IR_EXTERNAL_DECLARATION_STUB name:p1 index:1 type:kotlin.Any! flags:
       PROPERTY IR_EXTERNAL_DECLARATION_STUB name:serialVersionUID type:kotlin.Long visibility:private modality:FINAL flags:constmval
-        FIELD IR_EXTERNAL_DECLARATION_STUB name:serialVersionUID type:kotlin.Long visibility:private
+        FIELD IR_EXTERNAL_DECLARATION_STUB name:serialVersionUID type:kotlin.Long visibility:private flags:final
       PROPERTY IR_EXTERNAL_DECLARATION_STUB name:DEFAULT_INITIAL_CAPACITY type:kotlin.Int visibility:public/*package*/ modality:FINAL flags:constmval
-        FIELD IR_EXTERNAL_DECLARATION_STUB name:DEFAULT_INITIAL_CAPACITY type:kotlin.Int visibility:public/*package*/
+        FIELD IR_EXTERNAL_DECLARATION_STUB name:DEFAULT_INITIAL_CAPACITY type:kotlin.Int visibility:public/*package*/ flags:final
       PROPERTY IR_EXTERNAL_DECLARATION_STUB name:DEFAULT_LOAD_FACTOR type:kotlin.Float visibility:public/*package*/ modality:FINAL flags:constmval
-        FIELD IR_EXTERNAL_DECLARATION_STUB name:DEFAULT_LOAD_FACTOR type:kotlin.Float visibility:public/*package*/
+        FIELD IR_EXTERNAL_DECLARATION_STUB name:DEFAULT_LOAD_FACTOR type:kotlin.Float visibility:public/*package*/ flags:final
       PROPERTY IR_EXTERNAL_DECLARATION_STUB name:MAXIMUM_CAPACITY type:kotlin.Int visibility:public/*package*/ modality:FINAL flags:constmval
-        FIELD IR_EXTERNAL_DECLARATION_STUB name:MAXIMUM_CAPACITY type:kotlin.Int visibility:public/*package*/
+        FIELD IR_EXTERNAL_DECLARATION_STUB name:MAXIMUM_CAPACITY type:kotlin.Int visibility:public/*package*/ flags:final
       PROPERTY IR_EXTERNAL_DECLARATION_STUB name:MIN_TREEIFY_CAPACITY type:kotlin.Int visibility:public/*package*/ modality:FINAL flags:constmval
-        FIELD IR_EXTERNAL_DECLARATION_STUB name:MIN_TREEIFY_CAPACITY type:kotlin.Int visibility:public/*package*/
+        FIELD IR_EXTERNAL_DECLARATION_STUB name:MIN_TREEIFY_CAPACITY type:kotlin.Int visibility:public/*package*/ flags:final
       PROPERTY IR_EXTERNAL_DECLARATION_STUB name:TREEIFY_THRESHOLD type:kotlin.Int visibility:public/*package*/ modality:FINAL flags:constmval
-        FIELD IR_EXTERNAL_DECLARATION_STUB name:TREEIFY_THRESHOLD type:kotlin.Int visibility:public/*package*/
+        FIELD IR_EXTERNAL_DECLARATION_STUB name:TREEIFY_THRESHOLD type:kotlin.Int visibility:public/*package*/ flags:final
       PROPERTY IR_EXTERNAL_DECLARATION_STUB name:UNTREEIFY_THRESHOLD type:kotlin.Int visibility:public/*package*/ modality:FINAL flags:constmval
-        FIELD IR_EXTERNAL_DECLARATION_STUB name:UNTREEIFY_THRESHOLD type:kotlin.Int visibility:public/*package*/
+        FIELD IR_EXTERNAL_DECLARATION_STUB name:UNTREEIFY_THRESHOLD type:kotlin.Int visibility:public/*package*/ flags:final
       FUN FAKE_OVERRIDE name:hash visibility:public/*package*/ modality:FINAL <> (p0:kotlin.Any!) returnType:Int flags:
         overridden:
           FUN IR_EXTERNAL_DECLARATION_STUB name:hash visibility:public/*package*/ modality:FINAL <> (p0:kotlin.Any!) returnType:Int flags:
@@ -1173,13 +1173,13 @@ MODULE_FRAGMENT name:<dependencies of test-module>
         FUN IR_EXTERNAL_DECLARATION_STUB name:nextNode visibility:public/*package*/ modality:FINAL <> ($this:java.util.HashMap<K, V>.HashIterator) returnType:(java.util.HashMap.Node<(K..K?), (V..V?)>..java.util.HashMap.Node<(K..K?), (V..V?)>?) flags:
           $this: VALUE_PARAMETER IR_EXTERNAL_DECLARATION_STUB name:<this> type:java.util.HashMap<K, V>.HashIterator flags:
         PROPERTY IR_EXTERNAL_DECLARATION_STUB name:current type:java.util.HashMap.Node<K!, V!>! visibility:public/*package*/ modality:FINAL flags:var
-          FIELD IR_EXTERNAL_DECLARATION_STUB name:current type:java.util.HashMap.Node<K!, V!>! visibility:public/*package*/
+          FIELD IR_EXTERNAL_DECLARATION_STUB name:current type:java.util.HashMap.Node<K!, V!>! visibility:public/*package*/ flags:final
         PROPERTY IR_EXTERNAL_DECLARATION_STUB name:expectedModCount type:kotlin.Int visibility:public/*package*/ modality:FINAL flags:var
-          FIELD IR_EXTERNAL_DECLARATION_STUB name:expectedModCount type:kotlin.Int visibility:public/*package*/
+          FIELD IR_EXTERNAL_DECLARATION_STUB name:expectedModCount type:kotlin.Int visibility:public/*package*/ flags:final
         PROPERTY IR_EXTERNAL_DECLARATION_STUB name:index type:kotlin.Int visibility:public/*package*/ modality:FINAL flags:var
-          FIELD IR_EXTERNAL_DECLARATION_STUB name:index type:kotlin.Int visibility:public/*package*/
+          FIELD IR_EXTERNAL_DECLARATION_STUB name:index type:kotlin.Int visibility:public/*package*/ flags:final
         PROPERTY IR_EXTERNAL_DECLARATION_STUB name:next type:java.util.HashMap.Node<K!, V!>! visibility:public/*package*/ modality:FINAL flags:var
-          FIELD IR_EXTERNAL_DECLARATION_STUB name:next type:java.util.HashMap.Node<K!, V!>! visibility:public/*package*/
+          FIELD IR_EXTERNAL_DECLARATION_STUB name:next type:java.util.HashMap.Node<K!, V!>! visibility:public/*package*/ flags:final
       CLASS IR_EXTERNAL_DECLARATION_STUB CLASS name:EntrySpliterator modality:FINAL visibility:public/*package*/ flags:
         $this: VALUE_PARAMETER IR_EXTERNAL_DECLARATION_STUB name:<this> type:java.util.HashMap.EntrySpliterator<K, V> flags:
         superClasses:
@@ -1250,33 +1250,33 @@ MODULE_FRAGMENT name:<dependencies of test-module>
             FUN IR_EXTERNAL_DECLARATION_STUB name:getFence visibility:public/*package*/ modality:FINAL <> ($this:java.util.HashMap.HashMapSpliterator<K, V>) returnType:Int flags:
           $this: VALUE_PARAMETER IR_EXTERNAL_DECLARATION_STUB name:<this> type:java.util.HashMap.HashMapSpliterator<K!, V!> flags:
         PROPERTY IR_EXTERNAL_DECLARATION_STUB name:map type:java.util.HashMap<K!, V!>! visibility:public/*package*/ modality:FINAL flags:val
-          FIELD IR_EXTERNAL_DECLARATION_STUB name:map type:java.util.HashMap<K!, V!>! visibility:public/*package*/
+          FIELD IR_EXTERNAL_DECLARATION_STUB name:map type:java.util.HashMap<K!, V!>! visibility:public/*package*/ flags:final
         PROPERTY IR_EXTERNAL_DECLARATION_STUB name:current type:java.util.HashMap.Node<K!, V!>! visibility:public/*package*/ modality:FINAL flags:var
-          FIELD IR_EXTERNAL_DECLARATION_STUB name:current type:java.util.HashMap.Node<K!, V!>! visibility:public/*package*/
+          FIELD IR_EXTERNAL_DECLARATION_STUB name:current type:java.util.HashMap.Node<K!, V!>! visibility:public/*package*/ flags:final
         PROPERTY IR_EXTERNAL_DECLARATION_STUB name:est type:kotlin.Int visibility:public/*package*/ modality:FINAL flags:var
-          FIELD IR_EXTERNAL_DECLARATION_STUB name:est type:kotlin.Int visibility:public/*package*/
+          FIELD IR_EXTERNAL_DECLARATION_STUB name:est type:kotlin.Int visibility:public/*package*/ flags:final
         PROPERTY IR_EXTERNAL_DECLARATION_STUB name:expectedModCount type:kotlin.Int visibility:public/*package*/ modality:FINAL flags:var
-          FIELD IR_EXTERNAL_DECLARATION_STUB name:expectedModCount type:kotlin.Int visibility:public/*package*/
+          FIELD IR_EXTERNAL_DECLARATION_STUB name:expectedModCount type:kotlin.Int visibility:public/*package*/ flags:final
         PROPERTY IR_EXTERNAL_DECLARATION_STUB name:fence type:kotlin.Int visibility:public/*package*/ modality:FINAL flags:var
-          FIELD IR_EXTERNAL_DECLARATION_STUB name:fence type:kotlin.Int visibility:public/*package*/
+          FIELD IR_EXTERNAL_DECLARATION_STUB name:fence type:kotlin.Int visibility:public/*package*/ flags:final
         PROPERTY IR_EXTERNAL_DECLARATION_STUB name:index type:kotlin.Int visibility:public/*package*/ modality:FINAL flags:var
-          FIELD IR_EXTERNAL_DECLARATION_STUB name:index type:kotlin.Int visibility:public/*package*/
+          FIELD IR_EXTERNAL_DECLARATION_STUB name:index type:kotlin.Int visibility:public/*package*/ flags:final
         PROPERTY IR_EXTERNAL_DECLARATION_STUB name:CONCURRENT type:kotlin.Int visibility:public modality:FINAL flags:constmval
-          FIELD IR_EXTERNAL_DECLARATION_STUB name:CONCURRENT type:kotlin.Int visibility:public
+          FIELD IR_EXTERNAL_DECLARATION_STUB name:CONCURRENT type:kotlin.Int visibility:public flags:final
         PROPERTY IR_EXTERNAL_DECLARATION_STUB name:DISTINCT type:kotlin.Int visibility:public modality:FINAL flags:constmval
-          FIELD IR_EXTERNAL_DECLARATION_STUB name:DISTINCT type:kotlin.Int visibility:public
+          FIELD IR_EXTERNAL_DECLARATION_STUB name:DISTINCT type:kotlin.Int visibility:public flags:final
         PROPERTY IR_EXTERNAL_DECLARATION_STUB name:IMMUTABLE type:kotlin.Int visibility:public modality:FINAL flags:constmval
-          FIELD IR_EXTERNAL_DECLARATION_STUB name:IMMUTABLE type:kotlin.Int visibility:public
+          FIELD IR_EXTERNAL_DECLARATION_STUB name:IMMUTABLE type:kotlin.Int visibility:public flags:final
         PROPERTY IR_EXTERNAL_DECLARATION_STUB name:NONNULL type:kotlin.Int visibility:public modality:FINAL flags:constmval
-          FIELD IR_EXTERNAL_DECLARATION_STUB name:NONNULL type:kotlin.Int visibility:public
+          FIELD IR_EXTERNAL_DECLARATION_STUB name:NONNULL type:kotlin.Int visibility:public flags:final
         PROPERTY IR_EXTERNAL_DECLARATION_STUB name:ORDERED type:kotlin.Int visibility:public modality:FINAL flags:constmval
-          FIELD IR_EXTERNAL_DECLARATION_STUB name:ORDERED type:kotlin.Int visibility:public
+          FIELD IR_EXTERNAL_DECLARATION_STUB name:ORDERED type:kotlin.Int visibility:public flags:final
         PROPERTY IR_EXTERNAL_DECLARATION_STUB name:SIZED type:kotlin.Int visibility:public modality:FINAL flags:constmval
-          FIELD IR_EXTERNAL_DECLARATION_STUB name:SIZED type:kotlin.Int visibility:public
+          FIELD IR_EXTERNAL_DECLARATION_STUB name:SIZED type:kotlin.Int visibility:public flags:final
         PROPERTY IR_EXTERNAL_DECLARATION_STUB name:SORTED type:kotlin.Int visibility:public modality:FINAL flags:constmval
-          FIELD IR_EXTERNAL_DECLARATION_STUB name:SORTED type:kotlin.Int visibility:public
+          FIELD IR_EXTERNAL_DECLARATION_STUB name:SORTED type:kotlin.Int visibility:public flags:final
         PROPERTY IR_EXTERNAL_DECLARATION_STUB name:SUBSIZED type:kotlin.Int visibility:public modality:FINAL flags:constmval
-          FIELD IR_EXTERNAL_DECLARATION_STUB name:SUBSIZED type:kotlin.Int visibility:public
+          FIELD IR_EXTERNAL_DECLARATION_STUB name:SUBSIZED type:kotlin.Int visibility:public flags:final
       CLASS IR_EXTERNAL_DECLARATION_STUB CLASS name:KeySpliterator modality:FINAL visibility:public/*package*/ flags:
         $this: VALUE_PARAMETER IR_EXTERNAL_DECLARATION_STUB name:<this> type:java.util.HashMap.KeySpliterator<K, V> flags:
         superClasses:
@@ -1347,33 +1347,33 @@ MODULE_FRAGMENT name:<dependencies of test-module>
             FUN IR_EXTERNAL_DECLARATION_STUB name:getFence visibility:public/*package*/ modality:FINAL <> ($this:java.util.HashMap.HashMapSpliterator<K, V>) returnType:Int flags:
           $this: VALUE_PARAMETER IR_EXTERNAL_DECLARATION_STUB name:<this> type:java.util.HashMap.HashMapSpliterator<K!, V!> flags:
         PROPERTY IR_EXTERNAL_DECLARATION_STUB name:map type:java.util.HashMap<K!, V!>! visibility:public/*package*/ modality:FINAL flags:val
-          FIELD IR_EXTERNAL_DECLARATION_STUB name:map type:java.util.HashMap<K!, V!>! visibility:public/*package*/
+          FIELD IR_EXTERNAL_DECLARATION_STUB name:map type:java.util.HashMap<K!, V!>! visibility:public/*package*/ flags:final
         PROPERTY IR_EXTERNAL_DECLARATION_STUB name:current type:java.util.HashMap.Node<K!, V!>! visibility:public/*package*/ modality:FINAL flags:var
-          FIELD IR_EXTERNAL_DECLARATION_STUB name:current type:java.util.HashMap.Node<K!, V!>! visibility:public/*package*/
+          FIELD IR_EXTERNAL_DECLARATION_STUB name:current type:java.util.HashMap.Node<K!, V!>! visibility:public/*package*/ flags:final
         PROPERTY IR_EXTERNAL_DECLARATION_STUB name:est type:kotlin.Int visibility:public/*package*/ modality:FINAL flags:var
-          FIELD IR_EXTERNAL_DECLARATION_STUB name:est type:kotlin.Int visibility:public/*package*/
+          FIELD IR_EXTERNAL_DECLARATION_STUB name:est type:kotlin.Int visibility:public/*package*/ flags:final
         PROPERTY IR_EXTERNAL_DECLARATION_STUB name:expectedModCount type:kotlin.Int visibility:public/*package*/ modality:FINAL flags:var
-          FIELD IR_EXTERNAL_DECLARATION_STUB name:expectedModCount type:kotlin.Int visibility:public/*package*/
+          FIELD IR_EXTERNAL_DECLARATION_STUB name:expectedModCount type:kotlin.Int visibility:public/*package*/ flags:final
         PROPERTY IR_EXTERNAL_DECLARATION_STUB name:fence type:kotlin.Int visibility:public/*package*/ modality:FINAL flags:var
-          FIELD IR_EXTERNAL_DECLARATION_STUB name:fence type:kotlin.Int visibility:public/*package*/
+          FIELD IR_EXTERNAL_DECLARATION_STUB name:fence type:kotlin.Int visibility:public/*package*/ flags:final
         PROPERTY IR_EXTERNAL_DECLARATION_STUB name:index type:kotlin.Int visibility:public/*package*/ modality:FINAL flags:var
-          FIELD IR_EXTERNAL_DECLARATION_STUB name:index type:kotlin.Int visibility:public/*package*/
+          FIELD IR_EXTERNAL_DECLARATION_STUB name:index type:kotlin.Int visibility:public/*package*/ flags:final
         PROPERTY IR_EXTERNAL_DECLARATION_STUB name:CONCURRENT type:kotlin.Int visibility:public modality:FINAL flags:constmval
-          FIELD IR_EXTERNAL_DECLARATION_STUB name:CONCURRENT type:kotlin.Int visibility:public
+          FIELD IR_EXTERNAL_DECLARATION_STUB name:CONCURRENT type:kotlin.Int visibility:public flags:final
         PROPERTY IR_EXTERNAL_DECLARATION_STUB name:DISTINCT type:kotlin.Int visibility:public modality:FINAL flags:constmval
-          FIELD IR_EXTERNAL_DECLARATION_STUB name:DISTINCT type:kotlin.Int visibility:public
+          FIELD IR_EXTERNAL_DECLARATION_STUB name:DISTINCT type:kotlin.Int visibility:public flags:final
         PROPERTY IR_EXTERNAL_DECLARATION_STUB name:IMMUTABLE type:kotlin.Int visibility:public modality:FINAL flags:constmval
-          FIELD IR_EXTERNAL_DECLARATION_STUB name:IMMUTABLE type:kotlin.Int visibility:public
+          FIELD IR_EXTERNAL_DECLARATION_STUB name:IMMUTABLE type:kotlin.Int visibility:public flags:final
         PROPERTY IR_EXTERNAL_DECLARATION_STUB name:NONNULL type:kotlin.Int visibility:public modality:FINAL flags:constmval
-          FIELD IR_EXTERNAL_DECLARATION_STUB name:NONNULL type:kotlin.Int visibility:public
+          FIELD IR_EXTERNAL_DECLARATION_STUB name:NONNULL type:kotlin.Int visibility:public flags:final
         PROPERTY IR_EXTERNAL_DECLARATION_STUB name:ORDERED type:kotlin.Int visibility:public modality:FINAL flags:constmval
-          FIELD IR_EXTERNAL_DECLARATION_STUB name:ORDERED type:kotlin.Int visibility:public
+          FIELD IR_EXTERNAL_DECLARATION_STUB name:ORDERED type:kotlin.Int visibility:public flags:final
         PROPERTY IR_EXTERNAL_DECLARATION_STUB name:SIZED type:kotlin.Int visibility:public modality:FINAL flags:constmval
-          FIELD IR_EXTERNAL_DECLARATION_STUB name:SIZED type:kotlin.Int visibility:public
+          FIELD IR_EXTERNAL_DECLARATION_STUB name:SIZED type:kotlin.Int visibility:public flags:final
         PROPERTY IR_EXTERNAL_DECLARATION_STUB name:SORTED type:kotlin.Int visibility:public modality:FINAL flags:constmval
-          FIELD IR_EXTERNAL_DECLARATION_STUB name:SORTED type:kotlin.Int visibility:public
+          FIELD IR_EXTERNAL_DECLARATION_STUB name:SORTED type:kotlin.Int visibility:public flags:final
         PROPERTY IR_EXTERNAL_DECLARATION_STUB name:SUBSIZED type:kotlin.Int visibility:public modality:FINAL flags:constmval
-          FIELD IR_EXTERNAL_DECLARATION_STUB name:SUBSIZED type:kotlin.Int visibility:public
+          FIELD IR_EXTERNAL_DECLARATION_STUB name:SUBSIZED type:kotlin.Int visibility:public flags:final
       CLASS IR_EXTERNAL_DECLARATION_STUB CLASS name:TreeNode modality:FINAL visibility:public/*package*/ flags:
         $this: VALUE_PARAMETER IR_EXTERNAL_DECLARATION_STUB name:<this> type:java.util.HashMap.TreeNode<K, V> flags:
         superClasses:
@@ -1449,27 +1449,27 @@ MODULE_FRAGMENT name:<dependencies of test-module>
           $this: VALUE_PARAMETER IR_EXTERNAL_DECLARATION_STUB name:<this> type:java.util.HashMap.TreeNode<K, V> flags:
           VALUE_PARAMETER IR_EXTERNAL_DECLARATION_STUB name:p0 index:0 type:java.util.HashMap<K!, V!>! flags:
         PROPERTY IR_EXTERNAL_DECLARATION_STUB name:hash type:kotlin.Int visibility:public/*package*/ modality:FINAL flags:val
-          FIELD IR_EXTERNAL_DECLARATION_STUB name:hash type:kotlin.Int visibility:public/*package*/
+          FIELD IR_EXTERNAL_DECLARATION_STUB name:hash type:kotlin.Int visibility:public/*package*/ flags:final
         PROPERTY IR_EXTERNAL_DECLARATION_STUB name:key type:K! visibility:public/*package*/ modality:FINAL flags:val
-          FIELD IR_EXTERNAL_DECLARATION_STUB name:key type:K! visibility:public/*package*/
+          FIELD IR_EXTERNAL_DECLARATION_STUB name:key type:K! visibility:public/*package*/ flags:final
         PROPERTY IR_EXTERNAL_DECLARATION_STUB name:after type:java.util.LinkedHashMap.Entry<K!, V!>! visibility:public/*package*/ modality:FINAL flags:var
-          FIELD IR_EXTERNAL_DECLARATION_STUB name:after type:java.util.LinkedHashMap.Entry<K!, V!>! visibility:public/*package*/
+          FIELD IR_EXTERNAL_DECLARATION_STUB name:after type:java.util.LinkedHashMap.Entry<K!, V!>! visibility:public/*package*/ flags:final
         PROPERTY IR_EXTERNAL_DECLARATION_STUB name:before type:java.util.LinkedHashMap.Entry<K!, V!>! visibility:public/*package*/ modality:FINAL flags:var
-          FIELD IR_EXTERNAL_DECLARATION_STUB name:before type:java.util.LinkedHashMap.Entry<K!, V!>! visibility:public/*package*/
+          FIELD IR_EXTERNAL_DECLARATION_STUB name:before type:java.util.LinkedHashMap.Entry<K!, V!>! visibility:public/*package*/ flags:final
         PROPERTY IR_EXTERNAL_DECLARATION_STUB name:next type:java.util.HashMap.Node<K!, V!>! visibility:public/*package*/ modality:FINAL flags:var
-          FIELD IR_EXTERNAL_DECLARATION_STUB name:next type:java.util.HashMap.Node<K!, V!>! visibility:public/*package*/
+          FIELD IR_EXTERNAL_DECLARATION_STUB name:next type:java.util.HashMap.Node<K!, V!>! visibility:public/*package*/ flags:final
         PROPERTY IR_EXTERNAL_DECLARATION_STUB name:value type:V! visibility:public/*package*/ modality:FINAL flags:var
-          FIELD IR_EXTERNAL_DECLARATION_STUB name:value type:V! visibility:public/*package*/
+          FIELD IR_EXTERNAL_DECLARATION_STUB name:value type:V! visibility:public/*package*/ flags:final
         PROPERTY IR_EXTERNAL_DECLARATION_STUB name:left type:java.util.HashMap.TreeNode<K!, V!>! visibility:public/*package*/ modality:FINAL flags:var
-          FIELD IR_EXTERNAL_DECLARATION_STUB name:left type:java.util.HashMap.TreeNode<K!, V!>! visibility:public/*package*/
+          FIELD IR_EXTERNAL_DECLARATION_STUB name:left type:java.util.HashMap.TreeNode<K!, V!>! visibility:public/*package*/ flags:final
         PROPERTY IR_EXTERNAL_DECLARATION_STUB name:parent type:java.util.HashMap.TreeNode<K!, V!>! visibility:public/*package*/ modality:FINAL flags:var
-          FIELD IR_EXTERNAL_DECLARATION_STUB name:parent type:java.util.HashMap.TreeNode<K!, V!>! visibility:public/*package*/
+          FIELD IR_EXTERNAL_DECLARATION_STUB name:parent type:java.util.HashMap.TreeNode<K!, V!>! visibility:public/*package*/ flags:final
         PROPERTY IR_EXTERNAL_DECLARATION_STUB name:prev type:java.util.HashMap.TreeNode<K!, V!>! visibility:public/*package*/ modality:FINAL flags:var
-          FIELD IR_EXTERNAL_DECLARATION_STUB name:prev type:java.util.HashMap.TreeNode<K!, V!>! visibility:public/*package*/
+          FIELD IR_EXTERNAL_DECLARATION_STUB name:prev type:java.util.HashMap.TreeNode<K!, V!>! visibility:public/*package*/ flags:final
         PROPERTY IR_EXTERNAL_DECLARATION_STUB name:red type:kotlin.Boolean visibility:public/*package*/ modality:FINAL flags:var
-          FIELD IR_EXTERNAL_DECLARATION_STUB name:red type:kotlin.Boolean visibility:public/*package*/
+          FIELD IR_EXTERNAL_DECLARATION_STUB name:red type:kotlin.Boolean visibility:public/*package*/ flags:final
         PROPERTY IR_EXTERNAL_DECLARATION_STUB name:right type:java.util.HashMap.TreeNode<K!, V!>! visibility:public/*package*/ modality:FINAL flags:var
-          FIELD IR_EXTERNAL_DECLARATION_STUB name:right type:java.util.HashMap.TreeNode<K!, V!>! visibility:public/*package*/
+          FIELD IR_EXTERNAL_DECLARATION_STUB name:right type:java.util.HashMap.TreeNode<K!, V!>! visibility:public/*package*/ flags:final
         FUN IR_EXTERNAL_DECLARATION_STUB name:balanceDeletion visibility:public/*package*/ modality:OPEN <K, V> (p0:java.util.HashMap.TreeNode<K!, V!>!, p1:java.util.HashMap.TreeNode<K!, V!>!) returnType:(java.util.HashMap.TreeNode<(K..K?), (V..V?)>..java.util.HashMap.TreeNode<(K..K?), (V..V?)>?) flags:
           TYPE_PARAMETER IR_EXTERNAL_DECLARATION_STUB name:K index:0 variance: upperBounds:[kotlin.Any!]
           TYPE_PARAMETER IR_EXTERNAL_DECLARATION_STUB name:V index:1 variance: upperBounds:[kotlin.Any!]
@@ -1572,33 +1572,33 @@ MODULE_FRAGMENT name:<dependencies of test-module>
             FUN IR_EXTERNAL_DECLARATION_STUB name:getFence visibility:public/*package*/ modality:FINAL <> ($this:java.util.HashMap.HashMapSpliterator<K, V>) returnType:Int flags:
           $this: VALUE_PARAMETER IR_EXTERNAL_DECLARATION_STUB name:<this> type:java.util.HashMap.HashMapSpliterator<K!, V!> flags:
         PROPERTY IR_EXTERNAL_DECLARATION_STUB name:map type:java.util.HashMap<K!, V!>! visibility:public/*package*/ modality:FINAL flags:val
-          FIELD IR_EXTERNAL_DECLARATION_STUB name:map type:java.util.HashMap<K!, V!>! visibility:public/*package*/
+          FIELD IR_EXTERNAL_DECLARATION_STUB name:map type:java.util.HashMap<K!, V!>! visibility:public/*package*/ flags:final
         PROPERTY IR_EXTERNAL_DECLARATION_STUB name:current type:java.util.HashMap.Node<K!, V!>! visibility:public/*package*/ modality:FINAL flags:var
-          FIELD IR_EXTERNAL_DECLARATION_STUB name:current type:java.util.HashMap.Node<K!, V!>! visibility:public/*package*/
+          FIELD IR_EXTERNAL_DECLARATION_STUB name:current type:java.util.HashMap.Node<K!, V!>! visibility:public/*package*/ flags:final
         PROPERTY IR_EXTERNAL_DECLARATION_STUB name:est type:kotlin.Int visibility:public/*package*/ modality:FINAL flags:var
-          FIELD IR_EXTERNAL_DECLARATION_STUB name:est type:kotlin.Int visibility:public/*package*/
+          FIELD IR_EXTERNAL_DECLARATION_STUB name:est type:kotlin.Int visibility:public/*package*/ flags:final
         PROPERTY IR_EXTERNAL_DECLARATION_STUB name:expectedModCount type:kotlin.Int visibility:public/*package*/ modality:FINAL flags:var
-          FIELD IR_EXTERNAL_DECLARATION_STUB name:expectedModCount type:kotlin.Int visibility:public/*package*/
+          FIELD IR_EXTERNAL_DECLARATION_STUB name:expectedModCount type:kotlin.Int visibility:public/*package*/ flags:final
         PROPERTY IR_EXTERNAL_DECLARATION_STUB name:fence type:kotlin.Int visibility:public/*package*/ modality:FINAL flags:var
-          FIELD IR_EXTERNAL_DECLARATION_STUB name:fence type:kotlin.Int visibility:public/*package*/
+          FIELD IR_EXTERNAL_DECLARATION_STUB name:fence type:kotlin.Int visibility:public/*package*/ flags:final
         PROPERTY IR_EXTERNAL_DECLARATION_STUB name:index type:kotlin.Int visibility:public/*package*/ modality:FINAL flags:var
-          FIELD IR_EXTERNAL_DECLARATION_STUB name:index type:kotlin.Int visibility:public/*package*/
+          FIELD IR_EXTERNAL_DECLARATION_STUB name:index type:kotlin.Int visibility:public/*package*/ flags:final
         PROPERTY IR_EXTERNAL_DECLARATION_STUB name:CONCURRENT type:kotlin.Int visibility:public modality:FINAL flags:constmval
-          FIELD IR_EXTERNAL_DECLARATION_STUB name:CONCURRENT type:kotlin.Int visibility:public
+          FIELD IR_EXTERNAL_DECLARATION_STUB name:CONCURRENT type:kotlin.Int visibility:public flags:final
         PROPERTY IR_EXTERNAL_DECLARATION_STUB name:DISTINCT type:kotlin.Int visibility:public modality:FINAL flags:constmval
-          FIELD IR_EXTERNAL_DECLARATION_STUB name:DISTINCT type:kotlin.Int visibility:public
+          FIELD IR_EXTERNAL_DECLARATION_STUB name:DISTINCT type:kotlin.Int visibility:public flags:final
         PROPERTY IR_EXTERNAL_DECLARATION_STUB name:IMMUTABLE type:kotlin.Int visibility:public modality:FINAL flags:constmval
-          FIELD IR_EXTERNAL_DECLARATION_STUB name:IMMUTABLE type:kotlin.Int visibility:public
+          FIELD IR_EXTERNAL_DECLARATION_STUB name:IMMUTABLE type:kotlin.Int visibility:public flags:final
         PROPERTY IR_EXTERNAL_DECLARATION_STUB name:NONNULL type:kotlin.Int visibility:public modality:FINAL flags:constmval
-          FIELD IR_EXTERNAL_DECLARATION_STUB name:NONNULL type:kotlin.Int visibility:public
+          FIELD IR_EXTERNAL_DECLARATION_STUB name:NONNULL type:kotlin.Int visibility:public flags:final
         PROPERTY IR_EXTERNAL_DECLARATION_STUB name:ORDERED type:kotlin.Int visibility:public modality:FINAL flags:constmval
-          FIELD IR_EXTERNAL_DECLARATION_STUB name:ORDERED type:kotlin.Int visibility:public
+          FIELD IR_EXTERNAL_DECLARATION_STUB name:ORDERED type:kotlin.Int visibility:public flags:final
         PROPERTY IR_EXTERNAL_DECLARATION_STUB name:SIZED type:kotlin.Int visibility:public modality:FINAL flags:constmval
-          FIELD IR_EXTERNAL_DECLARATION_STUB name:SIZED type:kotlin.Int visibility:public
+          FIELD IR_EXTERNAL_DECLARATION_STUB name:SIZED type:kotlin.Int visibility:public flags:final
         PROPERTY IR_EXTERNAL_DECLARATION_STUB name:SORTED type:kotlin.Int visibility:public modality:FINAL flags:constmval
-          FIELD IR_EXTERNAL_DECLARATION_STUB name:SORTED type:kotlin.Int visibility:public
+          FIELD IR_EXTERNAL_DECLARATION_STUB name:SORTED type:kotlin.Int visibility:public flags:final
         PROPERTY IR_EXTERNAL_DECLARATION_STUB name:SUBSIZED type:kotlin.Int visibility:public modality:FINAL flags:constmval
-          FIELD IR_EXTERNAL_DECLARATION_STUB name:SUBSIZED type:kotlin.Int visibility:public
+          FIELD IR_EXTERNAL_DECLARATION_STUB name:SUBSIZED type:kotlin.Int visibility:public flags:final
       FUN IR_EXTERNAL_DECLARATION_STUB name:capacity visibility:public/*package*/ modality:FINAL <> ($this:java.util.HashMap<K, V>) returnType:Int flags:
         $this: VALUE_PARAMETER IR_EXTERNAL_DECLARATION_STUB name:<this> type:java.util.HashMap<K, V> flags:
       FUN IR_EXTERNAL_DECLARATION_STUB name:getNode visibility:public/*package*/ modality:FINAL <> ($this:java.util.HashMap<K, V>, p0:kotlin.Int, p1:kotlin.Any!) returnType:(java.util.HashMap.Node<(K..K?), (V..V?)>..java.util.HashMap.Node<(K..K?), (V..V?)>?) flags:
@@ -1678,13 +1678,13 @@ MODULE_FRAGMENT name:<dependencies of test-module>
             FUN IR_EXTERNAL_DECLARATION_STUB name:nextNode visibility:public/*package*/ modality:FINAL <> ($this:java.util.HashMap<K, V>.HashIterator) returnType:(java.util.HashMap.Node<(K..K?), (V..V?)>..java.util.HashMap.Node<(K..K?), (V..V?)>?) flags:
           $this: VALUE_PARAMETER IR_EXTERNAL_DECLARATION_STUB name:<this> type:java.util.HashMap<K!, V!>.HashIterator flags:
         PROPERTY IR_EXTERNAL_DECLARATION_STUB name:current type:java.util.HashMap.Node<K!, V!>! visibility:public/*package*/ modality:FINAL flags:var
-          FIELD IR_EXTERNAL_DECLARATION_STUB name:current type:java.util.HashMap.Node<K!, V!>! visibility:public/*package*/
+          FIELD IR_EXTERNAL_DECLARATION_STUB name:current type:java.util.HashMap.Node<K!, V!>! visibility:public/*package*/ flags:final
         PROPERTY IR_EXTERNAL_DECLARATION_STUB name:expectedModCount type:kotlin.Int visibility:public/*package*/ modality:FINAL flags:var
-          FIELD IR_EXTERNAL_DECLARATION_STUB name:expectedModCount type:kotlin.Int visibility:public/*package*/
+          FIELD IR_EXTERNAL_DECLARATION_STUB name:expectedModCount type:kotlin.Int visibility:public/*package*/ flags:final
         PROPERTY IR_EXTERNAL_DECLARATION_STUB name:index type:kotlin.Int visibility:public/*package*/ modality:FINAL flags:var
-          FIELD IR_EXTERNAL_DECLARATION_STUB name:index type:kotlin.Int visibility:public/*package*/
+          FIELD IR_EXTERNAL_DECLARATION_STUB name:index type:kotlin.Int visibility:public/*package*/ flags:final
         PROPERTY IR_EXTERNAL_DECLARATION_STUB name:next type:java.util.HashMap.Node<K!, V!>! visibility:public/*package*/ modality:FINAL flags:var
-          FIELD IR_EXTERNAL_DECLARATION_STUB name:next type:java.util.HashMap.Node<K!, V!>! visibility:public/*package*/
+          FIELD IR_EXTERNAL_DECLARATION_STUB name:next type:java.util.HashMap.Node<K!, V!>! visibility:public/*package*/ flags:final
       CLASS IR_EXTERNAL_DECLARATION_STUB CLASS name:EntrySet modality:FINAL visibility:public/*package*/ flags:
         $this: VALUE_PARAMETER IR_EXTERNAL_DECLARATION_STUB name:<this> type:java.util.HashMap<K, V>.EntrySet flags:
         superClasses:
@@ -1789,7 +1789,7 @@ MODULE_FRAGMENT name:<dependencies of test-module>
             UNBOUND: fun toString(): kotlin.String
           $this: VALUE_PARAMETER IR_EXTERNAL_DECLARATION_STUB name:<this> type:java.util.AbstractCollection<kotlin.collections.(Mutable)Map.(Mutable)Entry<K!, V!>!> flags:
         PROPERTY IR_EXTERNAL_DECLARATION_STUB name:MAX_ARRAY_SIZE type:kotlin.Int visibility:invisible_fake modality:FINAL flags:constmval
-          FIELD IR_EXTERNAL_DECLARATION_STUB name:MAX_ARRAY_SIZE type:kotlin.Int visibility:invisible_fake
+          FIELD IR_EXTERNAL_DECLARATION_STUB name:MAX_ARRAY_SIZE type:kotlin.Int visibility:invisible_fake flags:final
         FUN FAKE_OVERRIDE name:finishToArray visibility:invisible_fake modality:OPEN <T> (p0:kotlin.Array<(out) T!>!, p1:kotlin.collections.(Mutable)Iterator<*>!) returnType:(kotlin.Array<(T..T?)>..kotlin.Array<out (T..T?)>?) flags:
           overridden:
             UNBOUND: fun <T : kotlin.Any!> finishToArray(p0: kotlin.Array<(out) T!>!, p1: kotlin.collections.(Mutable)Iterator<*>!): kotlin.Array<(out) T!>!
@@ -1847,13 +1847,13 @@ MODULE_FRAGMENT name:<dependencies of test-module>
             FUN IR_EXTERNAL_DECLARATION_STUB name:nextNode visibility:public/*package*/ modality:FINAL <> ($this:java.util.HashMap<K, V>.HashIterator) returnType:(java.util.HashMap.Node<(K..K?), (V..V?)>..java.util.HashMap.Node<(K..K?), (V..V?)>?) flags:
           $this: VALUE_PARAMETER IR_EXTERNAL_DECLARATION_STUB name:<this> type:java.util.HashMap<K!, V!>.HashIterator flags:
         PROPERTY IR_EXTERNAL_DECLARATION_STUB name:current type:java.util.HashMap.Node<K!, V!>! visibility:public/*package*/ modality:FINAL flags:var
-          FIELD IR_EXTERNAL_DECLARATION_STUB name:current type:java.util.HashMap.Node<K!, V!>! visibility:public/*package*/
+          FIELD IR_EXTERNAL_DECLARATION_STUB name:current type:java.util.HashMap.Node<K!, V!>! visibility:public/*package*/ flags:final
         PROPERTY IR_EXTERNAL_DECLARATION_STUB name:expectedModCount type:kotlin.Int visibility:public/*package*/ modality:FINAL flags:var
-          FIELD IR_EXTERNAL_DECLARATION_STUB name:expectedModCount type:kotlin.Int visibility:public/*package*/
+          FIELD IR_EXTERNAL_DECLARATION_STUB name:expectedModCount type:kotlin.Int visibility:public/*package*/ flags:final
         PROPERTY IR_EXTERNAL_DECLARATION_STUB name:index type:kotlin.Int visibility:public/*package*/ modality:FINAL flags:var
-          FIELD IR_EXTERNAL_DECLARATION_STUB name:index type:kotlin.Int visibility:public/*package*/
+          FIELD IR_EXTERNAL_DECLARATION_STUB name:index type:kotlin.Int visibility:public/*package*/ flags:final
         PROPERTY IR_EXTERNAL_DECLARATION_STUB name:next type:java.util.HashMap.Node<K!, V!>! visibility:public/*package*/ modality:FINAL flags:var
-          FIELD IR_EXTERNAL_DECLARATION_STUB name:next type:java.util.HashMap.Node<K!, V!>! visibility:public/*package*/
+          FIELD IR_EXTERNAL_DECLARATION_STUB name:next type:java.util.HashMap.Node<K!, V!>! visibility:public/*package*/ flags:final
       CLASS IR_EXTERNAL_DECLARATION_STUB CLASS name:KeySet modality:FINAL visibility:public/*package*/ flags:
         $this: VALUE_PARAMETER IR_EXTERNAL_DECLARATION_STUB name:<this> type:java.util.HashMap<K, V>.KeySet flags:
         superClasses:
@@ -1958,7 +1958,7 @@ MODULE_FRAGMENT name:<dependencies of test-module>
             UNBOUND: fun toString(): kotlin.String
           $this: VALUE_PARAMETER IR_EXTERNAL_DECLARATION_STUB name:<this> type:java.util.AbstractCollection<K!> flags:
         PROPERTY IR_EXTERNAL_DECLARATION_STUB name:MAX_ARRAY_SIZE type:kotlin.Int visibility:invisible_fake modality:FINAL flags:constmval
-          FIELD IR_EXTERNAL_DECLARATION_STUB name:MAX_ARRAY_SIZE type:kotlin.Int visibility:invisible_fake
+          FIELD IR_EXTERNAL_DECLARATION_STUB name:MAX_ARRAY_SIZE type:kotlin.Int visibility:invisible_fake flags:final
         FUN FAKE_OVERRIDE name:finishToArray visibility:invisible_fake modality:OPEN <T> (p0:kotlin.Array<(out) T!>!, p1:kotlin.collections.(Mutable)Iterator<*>!) returnType:(kotlin.Array<(T..T?)>..kotlin.Array<out (T..T?)>?) flags:
           overridden:
             UNBOUND: fun <T : kotlin.Any!> finishToArray(p0: kotlin.Array<(out) T!>!, p1: kotlin.collections.(Mutable)Iterator<*>!): kotlin.Array<(out) T!>!
@@ -2016,13 +2016,13 @@ MODULE_FRAGMENT name:<dependencies of test-module>
             FUN IR_EXTERNAL_DECLARATION_STUB name:nextNode visibility:public/*package*/ modality:FINAL <> ($this:java.util.HashMap<K, V>.HashIterator) returnType:(java.util.HashMap.Node<(K..K?), (V..V?)>..java.util.HashMap.Node<(K..K?), (V..V?)>?) flags:
           $this: VALUE_PARAMETER IR_EXTERNAL_DECLARATION_STUB name:<this> type:java.util.HashMap<K!, V!>.HashIterator flags:
         PROPERTY IR_EXTERNAL_DECLARATION_STUB name:current type:java.util.HashMap.Node<K!, V!>! visibility:public/*package*/ modality:FINAL flags:var
-          FIELD IR_EXTERNAL_DECLARATION_STUB name:current type:java.util.HashMap.Node<K!, V!>! visibility:public/*package*/
+          FIELD IR_EXTERNAL_DECLARATION_STUB name:current type:java.util.HashMap.Node<K!, V!>! visibility:public/*package*/ flags:final
         PROPERTY IR_EXTERNAL_DECLARATION_STUB name:expectedModCount type:kotlin.Int visibility:public/*package*/ modality:FINAL flags:var
-          FIELD IR_EXTERNAL_DECLARATION_STUB name:expectedModCount type:kotlin.Int visibility:public/*package*/
+          FIELD IR_EXTERNAL_DECLARATION_STUB name:expectedModCount type:kotlin.Int visibility:public/*package*/ flags:final
         PROPERTY IR_EXTERNAL_DECLARATION_STUB name:index type:kotlin.Int visibility:public/*package*/ modality:FINAL flags:var
-          FIELD IR_EXTERNAL_DECLARATION_STUB name:index type:kotlin.Int visibility:public/*package*/
+          FIELD IR_EXTERNAL_DECLARATION_STUB name:index type:kotlin.Int visibility:public/*package*/ flags:final
         PROPERTY IR_EXTERNAL_DECLARATION_STUB name:next type:java.util.HashMap.Node<K!, V!>! visibility:public/*package*/ modality:FINAL flags:var
-          FIELD IR_EXTERNAL_DECLARATION_STUB name:next type:java.util.HashMap.Node<K!, V!>! visibility:public/*package*/
+          FIELD IR_EXTERNAL_DECLARATION_STUB name:next type:java.util.HashMap.Node<K!, V!>! visibility:public/*package*/ flags:final
       CLASS IR_EXTERNAL_DECLARATION_STUB CLASS name:Values modality:FINAL visibility:public/*package*/ flags:
         $this: VALUE_PARAMETER IR_EXTERNAL_DECLARATION_STUB name:<this> type:java.util.HashMap<K, V>.Values flags:
         superClasses:
@@ -2127,7 +2127,7 @@ MODULE_FRAGMENT name:<dependencies of test-module>
             UNBOUND: fun toString(): kotlin.String
           $this: VALUE_PARAMETER IR_EXTERNAL_DECLARATION_STUB name:<this> type:java.util.AbstractCollection<V!> flags:
         PROPERTY IR_EXTERNAL_DECLARATION_STUB name:MAX_ARRAY_SIZE type:kotlin.Int visibility:invisible_fake modality:FINAL flags:constmval
-          FIELD IR_EXTERNAL_DECLARATION_STUB name:MAX_ARRAY_SIZE type:kotlin.Int visibility:invisible_fake
+          FIELD IR_EXTERNAL_DECLARATION_STUB name:MAX_ARRAY_SIZE type:kotlin.Int visibility:invisible_fake flags:final
         FUN FAKE_OVERRIDE name:finishToArray visibility:invisible_fake modality:OPEN <T> (p0:kotlin.Array<(out) T!>!, p1:kotlin.collections.(Mutable)Iterator<*>!) returnType:(kotlin.Array<(T..T?)>..kotlin.Array<out (T..T?)>?) flags:
           overridden:
             UNBOUND: fun <T : kotlin.Any!> finishToArray(p0: kotlin.Array<(out) T!>!, p1: kotlin.collections.(Mutable)Iterator<*>!): kotlin.Array<(out) T!>!
@@ -2139,21 +2139,21 @@ MODULE_FRAGMENT name:<dependencies of test-module>
             UNBOUND: fun hugeCapacity(p0: kotlin.Int): kotlin.Int
           VALUE_PARAMETER IR_EXTERNAL_DECLARATION_STUB name:p0 index:0 type:kotlin.Int flags:
       PROPERTY IR_EXTERNAL_DECLARATION_STUB name:keySet type:kotlin.collections.(Mutable)Set<K!>! visibility:public/*package*/ modality:FINAL flags:var
-        FIELD IR_EXTERNAL_DECLARATION_STUB name:keySet type:kotlin.collections.(Mutable)Set<K!>! visibility:public/*package*/
+        FIELD IR_EXTERNAL_DECLARATION_STUB name:keySet type:kotlin.collections.(Mutable)Set<K!>! visibility:public/*package*/ flags:final
       PROPERTY IR_EXTERNAL_DECLARATION_STUB name:values type:kotlin.collections.(Mutable)Collection<V!>! visibility:public/*package*/ modality:FINAL flags:var
-        FIELD IR_EXTERNAL_DECLARATION_STUB name:values type:kotlin.collections.(Mutable)Collection<V!>! visibility:public/*package*/
+        FIELD IR_EXTERNAL_DECLARATION_STUB name:values type:kotlin.collections.(Mutable)Collection<V!>! visibility:public/*package*/ flags:final
       PROPERTY IR_EXTERNAL_DECLARATION_STUB name:loadFactor type:kotlin.Float visibility:public/*package*/ modality:FINAL flags:val
-        FIELD IR_EXTERNAL_DECLARATION_STUB name:loadFactor type:kotlin.Float visibility:public/*package*/
+        FIELD IR_EXTERNAL_DECLARATION_STUB name:loadFactor type:kotlin.Float visibility:public/*package*/ flags:final
       PROPERTY IR_EXTERNAL_DECLARATION_STUB name:entrySet type:kotlin.collections.(Mutable)Set<kotlin.collections.(Mutable)Map.(Mutable)Entry<K!, V!>!>! visibility:public/*package*/ modality:FINAL flags:var
-        FIELD IR_EXTERNAL_DECLARATION_STUB name:entrySet type:kotlin.collections.(Mutable)Set<kotlin.collections.(Mutable)Map.(Mutable)Entry<K!, V!>!>! visibility:public/*package*/
+        FIELD IR_EXTERNAL_DECLARATION_STUB name:entrySet type:kotlin.collections.(Mutable)Set<kotlin.collections.(Mutable)Map.(Mutable)Entry<K!, V!>!>! visibility:public/*package*/ flags:final
       PROPERTY IR_EXTERNAL_DECLARATION_STUB name:modCount type:kotlin.Int visibility:public/*package*/ modality:FINAL flags:var
-        FIELD IR_EXTERNAL_DECLARATION_STUB name:modCount type:kotlin.Int visibility:public/*package*/
+        FIELD IR_EXTERNAL_DECLARATION_STUB name:modCount type:kotlin.Int visibility:public/*package*/ flags:final
       PROPERTY IR_EXTERNAL_DECLARATION_STUB name:size type:kotlin.Int visibility:public/*package*/ modality:FINAL flags:var
-        FIELD IR_EXTERNAL_DECLARATION_STUB name:size type:kotlin.Int visibility:public/*package*/
+        FIELD IR_EXTERNAL_DECLARATION_STUB name:size type:kotlin.Int visibility:public/*package*/ flags:final
       PROPERTY IR_EXTERNAL_DECLARATION_STUB name:table type:kotlin.Array<(out) java.util.HashMap.Node<K!, V!>!>! visibility:public/*package*/ modality:FINAL flags:var
-        FIELD IR_EXTERNAL_DECLARATION_STUB name:table type:kotlin.Array<(out) java.util.HashMap.Node<K!, V!>!>! visibility:public/*package*/
+        FIELD IR_EXTERNAL_DECLARATION_STUB name:table type:kotlin.Array<(out) java.util.HashMap.Node<K!, V!>!>! visibility:public/*package*/ flags:final
       PROPERTY IR_EXTERNAL_DECLARATION_STUB name:threshold type:kotlin.Int visibility:public/*package*/ modality:FINAL flags:var
-        FIELD IR_EXTERNAL_DECLARATION_STUB name:threshold type:kotlin.Int visibility:public/*package*/
+        FIELD IR_EXTERNAL_DECLARATION_STUB name:threshold type:kotlin.Int visibility:public/*package*/ flags:final
       CLASS IR_EXTERNAL_DECLARATION_STUB CLASS name:HashMapSpliterator modality:OPEN visibility:public/*package*/ flags:
         $this: VALUE_PARAMETER IR_EXTERNAL_DECLARATION_STUB name:<this> type:java.util.HashMap.HashMapSpliterator<K, V> flags:
         superClasses:
@@ -2184,17 +2184,17 @@ MODULE_FRAGMENT name:<dependencies of test-module>
         FUN IR_EXTERNAL_DECLARATION_STUB name:getFence visibility:public/*package*/ modality:FINAL <> ($this:java.util.HashMap.HashMapSpliterator<K, V>) returnType:Int flags:
           $this: VALUE_PARAMETER IR_EXTERNAL_DECLARATION_STUB name:<this> type:java.util.HashMap.HashMapSpliterator<K, V> flags:
         PROPERTY IR_EXTERNAL_DECLARATION_STUB name:map type:java.util.HashMap<K!, V!>! visibility:public/*package*/ modality:FINAL flags:val
-          FIELD IR_EXTERNAL_DECLARATION_STUB name:map type:java.util.HashMap<K!, V!>! visibility:public/*package*/
+          FIELD IR_EXTERNAL_DECLARATION_STUB name:map type:java.util.HashMap<K!, V!>! visibility:public/*package*/ flags:final
         PROPERTY IR_EXTERNAL_DECLARATION_STUB name:current type:java.util.HashMap.Node<K!, V!>! visibility:public/*package*/ modality:FINAL flags:var
-          FIELD IR_EXTERNAL_DECLARATION_STUB name:current type:java.util.HashMap.Node<K!, V!>! visibility:public/*package*/
+          FIELD IR_EXTERNAL_DECLARATION_STUB name:current type:java.util.HashMap.Node<K!, V!>! visibility:public/*package*/ flags:final
         PROPERTY IR_EXTERNAL_DECLARATION_STUB name:est type:kotlin.Int visibility:public/*package*/ modality:FINAL flags:var
-          FIELD IR_EXTERNAL_DECLARATION_STUB name:est type:kotlin.Int visibility:public/*package*/
+          FIELD IR_EXTERNAL_DECLARATION_STUB name:est type:kotlin.Int visibility:public/*package*/ flags:final
         PROPERTY IR_EXTERNAL_DECLARATION_STUB name:expectedModCount type:kotlin.Int visibility:public/*package*/ modality:FINAL flags:var
-          FIELD IR_EXTERNAL_DECLARATION_STUB name:expectedModCount type:kotlin.Int visibility:public/*package*/
+          FIELD IR_EXTERNAL_DECLARATION_STUB name:expectedModCount type:kotlin.Int visibility:public/*package*/ flags:final
         PROPERTY IR_EXTERNAL_DECLARATION_STUB name:fence type:kotlin.Int visibility:public/*package*/ modality:FINAL flags:var
-          FIELD IR_EXTERNAL_DECLARATION_STUB name:fence type:kotlin.Int visibility:public/*package*/
+          FIELD IR_EXTERNAL_DECLARATION_STUB name:fence type:kotlin.Int visibility:public/*package*/ flags:final
         PROPERTY IR_EXTERNAL_DECLARATION_STUB name:index type:kotlin.Int visibility:public/*package*/ modality:FINAL flags:var
-          FIELD IR_EXTERNAL_DECLARATION_STUB name:index type:kotlin.Int visibility:public/*package*/
+          FIELD IR_EXTERNAL_DECLARATION_STUB name:index type:kotlin.Int visibility:public/*package*/ flags:final
       CLASS IR_EXTERNAL_DECLARATION_STUB CLASS name:Node modality:OPEN visibility:public/*package*/ flags:
         $this: VALUE_PARAMETER IR_EXTERNAL_DECLARATION_STUB name:<this> type:java.util.HashMap.Node<K, V> flags:
         superClasses:
@@ -2235,13 +2235,13 @@ MODULE_FRAGMENT name:<dependencies of test-module>
               FUN FAKE_OVERRIDE name:<get-value> visibility:public modality:ABSTRACT <> ($this:kotlin.collections.Map.Entry<K, V>) returnType:V flags:
             $this: VALUE_PARAMETER IR_EXTERNAL_DECLARATION_STUB name:<this> type:java.util.HashMap.Node<K, V> flags:
         PROPERTY IR_EXTERNAL_DECLARATION_STUB name:hash type:kotlin.Int visibility:public/*package*/ modality:FINAL flags:val
-          FIELD IR_EXTERNAL_DECLARATION_STUB name:hash type:kotlin.Int visibility:public/*package*/
+          FIELD IR_EXTERNAL_DECLARATION_STUB name:hash type:kotlin.Int visibility:public/*package*/ flags:final
         PROPERTY IR_EXTERNAL_DECLARATION_STUB name:key type:K! visibility:public/*package*/ modality:FINAL flags:val
-          FIELD IR_EXTERNAL_DECLARATION_STUB name:key type:K! visibility:public/*package*/
+          FIELD IR_EXTERNAL_DECLARATION_STUB name:key type:K! visibility:public/*package*/ flags:final
         PROPERTY IR_EXTERNAL_DECLARATION_STUB name:next type:java.util.HashMap.Node<K!, V!>! visibility:public/*package*/ modality:FINAL flags:var
-          FIELD IR_EXTERNAL_DECLARATION_STUB name:next type:java.util.HashMap.Node<K!, V!>! visibility:public/*package*/
+          FIELD IR_EXTERNAL_DECLARATION_STUB name:next type:java.util.HashMap.Node<K!, V!>! visibility:public/*package*/ flags:final
         PROPERTY IR_EXTERNAL_DECLARATION_STUB name:value type:V! visibility:public/*package*/ modality:FINAL flags:var
-          FIELD IR_EXTERNAL_DECLARATION_STUB name:value type:V! visibility:public/*package*/
+          FIELD IR_EXTERNAL_DECLARATION_STUB name:value type:V! visibility:public/*package*/ flags:final
       FUN IR_EXTERNAL_DECLARATION_STUB name:afterNodeAccess visibility:public/*package*/ modality:OPEN <> ($this:java.util.HashMap<K, V>, p0:java.util.HashMap.Node<K!, V!>!) returnType:Unit flags:
         $this: VALUE_PARAMETER IR_EXTERNAL_DECLARATION_STUB name:<this> type:java.util.HashMap<K, V> flags:
         VALUE_PARAMETER IR_EXTERNAL_DECLARATION_STUB name:p0 index:0 type:java.util.HashMap.Node<K!, V!>! flags:
@@ -2282,19 +2282,19 @@ MODULE_FRAGMENT name:<dependencies of test-module>
         VALUE_PARAMETER IR_EXTERNAL_DECLARATION_STUB name:p0 index:0 type:kotlin.Any! flags:
         VALUE_PARAMETER IR_EXTERNAL_DECLARATION_STUB name:p1 index:1 type:kotlin.Any! flags:
       PROPERTY IR_EXTERNAL_DECLARATION_STUB name:serialVersionUID type:kotlin.Long visibility:private modality:FINAL flags:constmval
-        FIELD IR_EXTERNAL_DECLARATION_STUB name:serialVersionUID type:kotlin.Long visibility:private
+        FIELD IR_EXTERNAL_DECLARATION_STUB name:serialVersionUID type:kotlin.Long visibility:private flags:final
       PROPERTY IR_EXTERNAL_DECLARATION_STUB name:DEFAULT_INITIAL_CAPACITY type:kotlin.Int visibility:public/*package*/ modality:FINAL flags:constmval
-        FIELD IR_EXTERNAL_DECLARATION_STUB name:DEFAULT_INITIAL_CAPACITY type:kotlin.Int visibility:public/*package*/
+        FIELD IR_EXTERNAL_DECLARATION_STUB name:DEFAULT_INITIAL_CAPACITY type:kotlin.Int visibility:public/*package*/ flags:final
       PROPERTY IR_EXTERNAL_DECLARATION_STUB name:DEFAULT_LOAD_FACTOR type:kotlin.Float visibility:public/*package*/ modality:FINAL flags:constmval
-        FIELD IR_EXTERNAL_DECLARATION_STUB name:DEFAULT_LOAD_FACTOR type:kotlin.Float visibility:public/*package*/
+        FIELD IR_EXTERNAL_DECLARATION_STUB name:DEFAULT_LOAD_FACTOR type:kotlin.Float visibility:public/*package*/ flags:final
       PROPERTY IR_EXTERNAL_DECLARATION_STUB name:MAXIMUM_CAPACITY type:kotlin.Int visibility:public/*package*/ modality:FINAL flags:constmval
-        FIELD IR_EXTERNAL_DECLARATION_STUB name:MAXIMUM_CAPACITY type:kotlin.Int visibility:public/*package*/
+        FIELD IR_EXTERNAL_DECLARATION_STUB name:MAXIMUM_CAPACITY type:kotlin.Int visibility:public/*package*/ flags:final
       PROPERTY IR_EXTERNAL_DECLARATION_STUB name:MIN_TREEIFY_CAPACITY type:kotlin.Int visibility:public/*package*/ modality:FINAL flags:constmval
-        FIELD IR_EXTERNAL_DECLARATION_STUB name:MIN_TREEIFY_CAPACITY type:kotlin.Int visibility:public/*package*/
+        FIELD IR_EXTERNAL_DECLARATION_STUB name:MIN_TREEIFY_CAPACITY type:kotlin.Int visibility:public/*package*/ flags:final
       PROPERTY IR_EXTERNAL_DECLARATION_STUB name:TREEIFY_THRESHOLD type:kotlin.Int visibility:public/*package*/ modality:FINAL flags:constmval
-        FIELD IR_EXTERNAL_DECLARATION_STUB name:TREEIFY_THRESHOLD type:kotlin.Int visibility:public/*package*/
+        FIELD IR_EXTERNAL_DECLARATION_STUB name:TREEIFY_THRESHOLD type:kotlin.Int visibility:public/*package*/ flags:final
       PROPERTY IR_EXTERNAL_DECLARATION_STUB name:UNTREEIFY_THRESHOLD type:kotlin.Int visibility:public/*package*/ modality:FINAL flags:constmval
-        FIELD IR_EXTERNAL_DECLARATION_STUB name:UNTREEIFY_THRESHOLD type:kotlin.Int visibility:public/*package*/
+        FIELD IR_EXTERNAL_DECLARATION_STUB name:UNTREEIFY_THRESHOLD type:kotlin.Int visibility:public/*package*/ flags:final
       FUN IR_EXTERNAL_DECLARATION_STUB name:hash visibility:public/*package*/ modality:FINAL <> (p0:kotlin.Any!) returnType:Int flags:
         VALUE_PARAMETER IR_EXTERNAL_DECLARATION_STUB name:p0 index:0 type:kotlin.Any! flags:
       FUN IR_EXTERNAL_DECLARATION_STUB name:tableSizeFor visibility:public/*package*/ modality:FINAL <> (p0:kotlin.Int) returnType:Int flags:
@@ -2344,9 +2344,9 @@ MODULE_FRAGMENT name:<dependencies of test-module>
           VALUE_PARAMETER IR_EXTERNAL_DECLARATION_STUB name:p0 index:0 type:K! flags:
           VALUE_PARAMETER IR_EXTERNAL_DECLARATION_STUB name:p1 index:1 type:V! flags:
         PROPERTY IR_EXTERNAL_DECLARATION_STUB name:key type:K! visibility:private modality:FINAL flags:val
-          FIELD IR_EXTERNAL_DECLARATION_STUB name:key type:K! visibility:private
+          FIELD IR_EXTERNAL_DECLARATION_STUB name:key type:K! visibility:private flags:final
         PROPERTY IR_EXTERNAL_DECLARATION_STUB name:value type:V! visibility:private modality:FINAL flags:var
-          FIELD IR_EXTERNAL_DECLARATION_STUB name:value type:V! visibility:private
+          FIELD IR_EXTERNAL_DECLARATION_STUB name:value type:V! visibility:private flags:final
         FUN IR_EXTERNAL_DECLARATION_STUB name:setValue visibility:public modality:OPEN <> ($this:java.util.AbstractMap.SimpleEntry<K, V>, newValue:V!) returnType:(V..V?) flags:
           overridden:
             FUN IR_EXTERNAL_DECLARATION_STUB name:setValue visibility:public modality:ABSTRACT <> ($this:kotlin.collections.MutableMap.MutableEntry<K, V>, newValue:V) returnType:V flags:
@@ -2379,7 +2379,7 @@ MODULE_FRAGMENT name:<dependencies of test-module>
             UNBOUND: fun toString(): kotlin.String
           $this: VALUE_PARAMETER IR_EXTERNAL_DECLARATION_STUB name:<this> type:java.util.AbstractMap.SimpleEntry<K, V> flags:
         PROPERTY IR_EXTERNAL_DECLARATION_STUB name:serialVersionUID type:kotlin.Long visibility:private modality:FINAL flags:constmval
-          FIELD IR_EXTERNAL_DECLARATION_STUB name:serialVersionUID type:kotlin.Long visibility:private
+          FIELD IR_EXTERNAL_DECLARATION_STUB name:serialVersionUID type:kotlin.Long visibility:private flags:final
       CLASS IR_EXTERNAL_DECLARATION_STUB CLASS name:SimpleImmutableEntry modality:OPEN visibility:public flags:
         $this: VALUE_PARAMETER IR_EXTERNAL_DECLARATION_STUB name:<this> type:java.util.AbstractMap.SimpleImmutableEntry<K, V> flags:
         superClasses:
@@ -2393,9 +2393,9 @@ MODULE_FRAGMENT name:<dependencies of test-module>
           VALUE_PARAMETER IR_EXTERNAL_DECLARATION_STUB name:p0 index:0 type:K! flags:
           VALUE_PARAMETER IR_EXTERNAL_DECLARATION_STUB name:p1 index:1 type:V! flags:
         PROPERTY IR_EXTERNAL_DECLARATION_STUB name:key type:K! visibility:private modality:FINAL flags:val
-          FIELD IR_EXTERNAL_DECLARATION_STUB name:key type:K! visibility:private
+          FIELD IR_EXTERNAL_DECLARATION_STUB name:key type:K! visibility:private flags:final
         PROPERTY IR_EXTERNAL_DECLARATION_STUB name:value type:V! visibility:private modality:FINAL flags:val
-          FIELD IR_EXTERNAL_DECLARATION_STUB name:value type:V! visibility:private
+          FIELD IR_EXTERNAL_DECLARATION_STUB name:value type:V! visibility:private flags:final
         FUN IR_EXTERNAL_DECLARATION_STUB name:setValue visibility:public modality:OPEN <> ($this:java.util.AbstractMap.SimpleImmutableEntry<K, V>, newValue:V!) returnType:(V..V?) flags:
           overridden:
             FUN IR_EXTERNAL_DECLARATION_STUB name:setValue visibility:public modality:ABSTRACT <> ($this:kotlin.collections.MutableMap.MutableEntry<K, V>, newValue:V) returnType:V flags:
@@ -2428,7 +2428,7 @@ MODULE_FRAGMENT name:<dependencies of test-module>
             UNBOUND: fun toString(): kotlin.String
           $this: VALUE_PARAMETER IR_EXTERNAL_DECLARATION_STUB name:<this> type:java.util.AbstractMap.SimpleImmutableEntry<K, V> flags:
         PROPERTY IR_EXTERNAL_DECLARATION_STUB name:serialVersionUID type:kotlin.Long visibility:private modality:FINAL flags:constmval
-          FIELD IR_EXTERNAL_DECLARATION_STUB name:serialVersionUID type:kotlin.Long visibility:private
+          FIELD IR_EXTERNAL_DECLARATION_STUB name:serialVersionUID type:kotlin.Long visibility:private flags:final
       FUN FAKE_OVERRIDE name:compute visibility:public modality:OPEN <> ($this:kotlin.collections.MutableMap<K!, V!>, p0:K!, p1:java.util.function.BiFunction<in K!, in V?, out V?>) returnType:V? flags:
         overridden:
           FUN IR_EXTERNAL_DECLARATION_STUB name:compute visibility:public modality:OPEN <> ($this:kotlin.collections.MutableMap<K, V>, p0:K, p1:java.util.function.BiFunction<in K, in V?, out V?>) returnType:V? flags:
@@ -2551,9 +2551,9 @@ MODULE_FRAGMENT name:<dependencies of test-module>
             FUN IR_EXTERNAL_DECLARATION_STUB name:<get-values> visibility:public modality:ABSTRACT <> ($this:kotlin.collections.MutableMap<K, V>) returnType:MutableCollection<V> flags:
           $this: VALUE_PARAMETER IR_EXTERNAL_DECLARATION_STUB name:<this> type:java.util.AbstractMap<K, V> flags:
       PROPERTY IR_EXTERNAL_DECLARATION_STUB name:keySet type:kotlin.collections.(Mutable)Set<K!>! visibility:public/*package*/ modality:FINAL flags:var
-        FIELD IR_EXTERNAL_DECLARATION_STUB name:keySet type:kotlin.collections.(Mutable)Set<K!>! visibility:public/*package*/
+        FIELD IR_EXTERNAL_DECLARATION_STUB name:keySet type:kotlin.collections.(Mutable)Set<K!>! visibility:public/*package*/ flags:final
       PROPERTY IR_EXTERNAL_DECLARATION_STUB name:values type:kotlin.collections.(Mutable)Collection<V!>! visibility:public/*package*/ modality:FINAL flags:var
-        FIELD IR_EXTERNAL_DECLARATION_STUB name:values type:kotlin.collections.(Mutable)Collection<V!>! visibility:public/*package*/
+        FIELD IR_EXTERNAL_DECLARATION_STUB name:values type:kotlin.collections.(Mutable)Collection<V!>! visibility:public/*package*/ flags:final
       FUN IR_EXTERNAL_DECLARATION_STUB name:eq visibility:private modality:OPEN <> (p0:kotlin.Any!, p1:kotlin.Any!) returnType:Boolean flags:
         VALUE_PARAMETER IR_EXTERNAL_DECLARATION_STUB name:p0 index:0 type:kotlin.Any! flags:
         VALUE_PARAMETER IR_EXTERNAL_DECLARATION_STUB name:p1 index:1 type:kotlin.Any! flags:
diff --git a/compiler/testData/ir/irText/stubs/javaEnum.txt b/compiler/testData/ir/irText/stubs/javaEnum.txt
index 1387119cef5..b119ca9da91 100644
--- a/compiler/testData/ir/irText/stubs/javaEnum.txt
+++ b/compiler/testData/ir/irText/stubs/javaEnum.txt
@@ -1,6 +1,6 @@
 FILE fqName:<root> fileName:/javaEnum.kt
   PROPERTY name:test type:JEnum visibility:public modality:FINAL flags:val
-    FIELD PROPERTY_BACKING_FIELD name:test type:JEnum visibility:public
+    FIELD PROPERTY_BACKING_FIELD name:test type:JEnum visibility:public flags:final
       EXPRESSION_BODY
         GET_ENUM 'ONE' type=JEnum
     FUN DEFAULT_PROPERTY_ACCESSOR name:<get-test> visibility:public modality:FINAL <> () returnType:JEnum flags:
diff --git a/compiler/testData/ir/irText/stubs/javaInnerClass.txt b/compiler/testData/ir/irText/stubs/javaInnerClass.txt
index c205b533b3f..addb83c869b 100644
--- a/compiler/testData/ir/irText/stubs/javaInnerClass.txt
+++ b/compiler/testData/ir/irText/stubs/javaInnerClass.txt
@@ -8,7 +8,7 @@ FILE fqName:<root> fileName:/javaInnerClass.kt
         DELEGATING_CONSTRUCTOR_CALL 'constructor J()'
         INSTANCE_INITIALIZER_CALL classDescriptor='Test1'
     PROPERTY name:test type:J.JInner visibility:public modality:FINAL flags:val
-      FIELD PROPERTY_BACKING_FIELD name:test type:J.JInner visibility:public
+      FIELD PROPERTY_BACKING_FIELD name:test type:J.JInner visibility:public flags:final
         EXPRESSION_BODY
           CALL 'constructor JInner()' type=J.JInner origin=null
             $this: GET_VAR 'this@Test1: Test1' type=Test1 origin=null
@@ -19,7 +19,7 @@ FILE fqName:<root> fileName:/javaInnerClass.kt
             GET_FIELD 'test: J.JInner' type=J.JInner origin=null
               receiver: GET_VAR 'this@Test1: Test1' type=Test1 origin=null
     PROPERTY FAKE_OVERRIDE name:x type:kotlin.Int visibility:public modality:FINAL flags:var
-      FIELD FAKE_OVERRIDE name:x type:kotlin.Int visibility:public
+      FIELD FAKE_OVERRIDE name:x type:kotlin.Int visibility:public flags:final
     FUN FAKE_OVERRIDE name:bar visibility:public modality:OPEN <> ($this:J) returnType:Unit flags:
       overridden:
         FUN IR_EXTERNAL_DECLARATION_STUB name:bar visibility:public modality:OPEN <> ($this:J) returnType:Unit flags:
diff --git a/compiler/testData/ir/irText/stubs/javaInnerClass__testmodule.txt b/compiler/testData/ir/irText/stubs/javaInnerClass__testmodule.txt
index 960694b675b..713c7c77c30 100644
--- a/compiler/testData/ir/irText/stubs/javaInnerClass__testmodule.txt
+++ b/compiler/testData/ir/irText/stubs/javaInnerClass__testmodule.txt
@@ -6,7 +6,7 @@ MODULE_FRAGMENT name:<test-module>
         CLASS IR_EXTERNAL_DECLARATION_STUB CLASS name:Any modality:OPEN visibility:public flags:
       CONSTRUCTOR IR_EXTERNAL_DECLARATION_STUB visibility:public <> () returnType:J flags:
       PROPERTY IR_EXTERNAL_DECLARATION_STUB name:x type:kotlin.Int visibility:public modality:FINAL flags:var
-        FIELD IR_EXTERNAL_DECLARATION_STUB name:x type:kotlin.Int visibility:public
+        FIELD IR_EXTERNAL_DECLARATION_STUB name:x type:kotlin.Int visibility:public flags:final
       FUN IR_EXTERNAL_DECLARATION_STUB name:bar visibility:public modality:OPEN <> ($this:J) returnType:Unit flags:
         $this: VALUE_PARAMETER IR_EXTERNAL_DECLARATION_STUB name:<this> type:J flags:
       CLASS IR_EXTERNAL_DECLARATION_STUB CLASS name:JInner modality:OPEN visibility:public flags:
@@ -16,7 +16,7 @@ MODULE_FRAGMENT name:<test-module>
         CONSTRUCTOR IR_EXTERNAL_DECLARATION_STUB visibility:public <> ($this:J) returnType:J.JInner flags:
           $outer: VALUE_PARAMETER IR_EXTERNAL_DECLARATION_STUB name:<this> type:J flags:
         PROPERTY IR_EXTERNAL_DECLARATION_STUB name:z type:kotlin.Int visibility:public modality:FINAL flags:var
-          FIELD IR_EXTERNAL_DECLARATION_STUB name:z type:kotlin.Int visibility:public
+          FIELD IR_EXTERNAL_DECLARATION_STUB name:z type:kotlin.Int visibility:public flags:final
         FUN IR_EXTERNAL_DECLARATION_STUB name:foo visibility:public modality:OPEN <> ($this:J.JInner) returnType:Unit flags:
           $this: VALUE_PARAMETER IR_EXTERNAL_DECLARATION_STUB name:<this> type:J.JInner flags:
         FUN FAKE_OVERRIDE name:equals visibility:public modality:OPEN <> ($this:kotlin.Any, other:kotlin.Any?) returnType:Boolean flags:
diff --git a/compiler/testData/ir/irText/stubs/simple.txt b/compiler/testData/ir/irText/stubs/simple.txt
index f0c40b6db76..2a7b0936b51 100644
--- a/compiler/testData/ir/irText/stubs/simple.txt
+++ b/compiler/testData/ir/irText/stubs/simple.txt
@@ -1,6 +1,6 @@
 FILE fqName:<root> fileName:/simple.kt
   PROPERTY name:test type:kotlin.Int visibility:public modality:FINAL flags:val
-    FIELD PROPERTY_BACKING_FIELD name:test type:kotlin.Int visibility:public
+    FIELD PROPERTY_BACKING_FIELD name:test type:kotlin.Int visibility:public flags:final
       EXPRESSION_BODY
         CALL 'plus(Int): Int' type=kotlin.Int origin=PLUS
           $this: CONST Int type=kotlin.Int value=2
diff --git a/compiler/testData/ir/sourceRanges/synthesizedDataClassMembers.txt b/compiler/testData/ir/sourceRanges/synthesizedDataClassMembers.txt
index 307cb1cff70..a5a8e807591 100644
--- a/compiler/testData/ir/sourceRanges/synthesizedDataClassMembers.txt
+++ b/compiler/testData/ir/sourceRanges/synthesizedDataClassMembers.txt
@@ -9,7 +9,7 @@
         @0:0..4:1 DELEGATING_CONSTRUCTOR_CALL 'constructor Any()'
         @0:0..4:1 INSTANCE_INITIALIZER_CALL classDescriptor='C'
     @1:8..18 PROPERTY name:x type:kotlin.Int visibility:public modality:FINAL flags:val
-      @1:8..18 FIELD PROPERTY_BACKING_FIELD name:x type:kotlin.Int visibility:public
+      @1:8..18 FIELD PROPERTY_BACKING_FIELD name:x type:kotlin.Int visibility:public flags:final
         @1:8..18 EXPRESSION_BODY
           @1:8..18 GET_VAR 'value-parameter x: Int' type=kotlin.Int origin=INITIALIZE_PROPERTY_FROM_PARAMETER
       @1:8..18 FUN DEFAULT_PROPERTY_ACCESSOR name:<get-x> visibility:public modality:FINAL <> ($this:C) returnType:Int flags:
@@ -19,7 +19,7 @@
             @1:8..18 GET_FIELD 'x: Int' type=kotlin.Int origin=null
               @1:8..18 GET_VAR 'this@C: C' type=C origin=null
     @2:8..21 PROPERTY name:y type:kotlin.String visibility:public modality:FINAL flags:val
-      @2:8..21 FIELD PROPERTY_BACKING_FIELD name:y type:kotlin.String visibility:public
+      @2:8..21 FIELD PROPERTY_BACKING_FIELD name:y type:kotlin.String visibility:public flags:final
         @2:8..21 EXPRESSION_BODY
           @2:8..21 GET_VAR 'value-parameter y: String' type=kotlin.String origin=INITIALIZE_PROPERTY_FROM_PARAMETER
       @2:8..21 FUN DEFAULT_PROPERTY_ACCESSOR name:<get-y> visibility:public modality:FINAL <> ($this:C) returnType:String flags:
@@ -29,7 +29,7 @@
             @2:8..21 GET_FIELD 'y: String' type=kotlin.String origin=null
               @2:8..21 GET_VAR 'this@C: C' type=C origin=null
     @3:8..18 PROPERTY name:z type:kotlin.Any visibility:public modality:FINAL flags:val
-      @3:8..18 FIELD PROPERTY_BACKING_FIELD name:z type:kotlin.Any visibility:public
+      @3:8..18 FIELD PROPERTY_BACKING_FIELD name:z type:kotlin.Any visibility:public flags:final
         @3:8..18 EXPRESSION_BODY
           @3:8..18 GET_VAR 'value-parameter z: Any' type=kotlin.Any origin=INITIALIZE_PROPERTY_FROM_PARAMETER
       @3:8..18 FUN DEFAULT_PROPERTY_ACCESSOR name:<get-z> visibility:public modality:FINAL <> ($this:C) returnType:Any flags: