diff --git a/compiler/fir/fir2ir/src/org/jetbrains/kotlin/fir/backend/generators/DelegatedMemberGenerator.kt b/compiler/fir/fir2ir/src/org/jetbrains/kotlin/fir/backend/generators/DelegatedMemberGenerator.kt
index 96adcdbf1b5..bcae521cba9 100644
--- a/compiler/fir/fir2ir/src/org/jetbrains/kotlin/fir/backend/generators/DelegatedMemberGenerator.kt
+++ b/compiler/fir/fir2ir/src/org/jetbrains/kotlin/fir/backend/generators/DelegatedMemberGenerator.kt
@@ -12,6 +12,7 @@ import org.jetbrains.kotlin.fir.scopes.*
 import org.jetbrains.kotlin.fir.scopes.impl.delegatedWrapperData
 import org.jetbrains.kotlin.fir.symbols.ConeClassLikeLookupTag
 import org.jetbrains.kotlin.fir.symbols.PossiblyFirFakeOverrideSymbol
+import org.jetbrains.kotlin.fir.symbols.StandardClassIds
 import org.jetbrains.kotlin.fir.symbols.impl.*
 import org.jetbrains.kotlin.ir.declarations.*
 import org.jetbrains.kotlin.ir.expressions.IrBlockBody
@@ -49,7 +50,12 @@ internal class DelegatedMemberGenerator(
                 declarationStorage.getIrFunctionSymbol(unwrapped.symbol).owner as? IrSimpleFunction
                     ?: return@processAllFunctions
 
-            if (isJavaDefault(unwrapped)) return@processAllFunctions
+            if (isJavaDefault(unwrapped)) {
+                return@processAllFunctions
+            }
+            if (firSubClass is FirRegularClass && firSubClass.isData && unwrapped.symbol.callableId.classId == StandardClassIds.Any) {
+                return@processAllFunctions
+            }
 
             val irSubFunction = generateDelegatedFunction(
                 subClass, firSubClass, irField, member, functionSymbol.fir
diff --git a/compiler/testData/ir/irText/firProblems/SignatureClash.fir.txt b/compiler/testData/ir/irText/firProblems/SignatureClash.fir.txt
index 522dd3209d5..b034dcca96b 100644
--- a/compiler/testData/ir/irText/firProblems/SignatureClash.fir.txt
+++ b/compiler/testData/ir/irText/firProblems/SignatureClash.fir.txt
@@ -32,3 +32,155 @@ FILE fqName:<root> fileName:/SignatureClash.kt
       overridden:
         public open fun toString (): kotlin.String declared in kotlin.Any
       $this: VALUE_PARAMETER name:<this> type:kotlin.Any
+  CLASS INTERFACE name:Base modality:ABSTRACT visibility:public superTypes:[kotlin.Any]
+    $this: VALUE_PARAMETER INSTANCE_RECEIVER name:<this> type:<root>.Base
+    FUN FAKE_OVERRIDE name:equals visibility:public modality:OPEN <> ($this:kotlin.Any, other:kotlin.Any?) returnType:kotlin.Boolean [fake_override,operator]
+      overridden:
+        public open fun equals (other: kotlin.Any?): kotlin.Boolean [operator] declared in kotlin.Any
+      $this: VALUE_PARAMETER name:<this> type:kotlin.Any
+      VALUE_PARAMETER name:other index:0 type:kotlin.Any?
+    FUN FAKE_OVERRIDE name:hashCode visibility:public modality:OPEN <> ($this:kotlin.Any) returnType:kotlin.Int [fake_override]
+      overridden:
+        public open fun hashCode (): kotlin.Int declared in kotlin.Any
+      $this: VALUE_PARAMETER name:<this> type:kotlin.Any
+    FUN FAKE_OVERRIDE name:toString visibility:public modality:OPEN <> ($this:kotlin.Any) returnType:kotlin.String [fake_override]
+      overridden:
+        public open fun toString (): kotlin.String declared in kotlin.Any
+      $this: VALUE_PARAMETER name:<this> type:kotlin.Any
+  CLASS INTERFACE name:Delegate modality:ABSTRACT visibility:public superTypes:[<root>.Base]
+    $this: VALUE_PARAMETER INSTANCE_RECEIVER name:<this> type:<root>.Delegate
+    FUN name:bar visibility:public modality:ABSTRACT <> ($this:<root>.Delegate) returnType:kotlin.Unit
+      $this: VALUE_PARAMETER name:<this> type:<root>.Delegate
+    FUN FAKE_OVERRIDE name:equals visibility:public modality:OPEN <> ($this:kotlin.Any, other:kotlin.Any?) returnType:kotlin.Boolean [fake_override,operator]
+      overridden:
+        public open fun equals (other: kotlin.Any?): kotlin.Boolean [operator] declared in kotlin.Any
+      $this: VALUE_PARAMETER name:<this> type:kotlin.Any
+      VALUE_PARAMETER name:other index:0 type:kotlin.Any?
+    FUN FAKE_OVERRIDE name:hashCode visibility:public modality:OPEN <> ($this:kotlin.Any) returnType:kotlin.Int [fake_override]
+      overridden:
+        public open fun hashCode (): kotlin.Int declared in kotlin.Any
+      $this: VALUE_PARAMETER name:<this> type:kotlin.Any
+    FUN FAKE_OVERRIDE name:toString visibility:public modality:OPEN <> ($this:kotlin.Any) returnType:kotlin.String [fake_override]
+      overridden:
+        public open fun toString (): kotlin.String declared in kotlin.Any
+      $this: VALUE_PARAMETER name:<this> type:kotlin.Any
+  CLASS INTERFACE name:Derived modality:ABSTRACT visibility:public superTypes:[<root>.Delegate]
+    $this: VALUE_PARAMETER INSTANCE_RECEIVER name:<this> type:<root>.Derived
+    FUN FAKE_OVERRIDE name:bar visibility:public modality:ABSTRACT <> ($this:<root>.Delegate) returnType:kotlin.Unit [fake_override]
+      overridden:
+        public abstract fun bar (): kotlin.Unit declared in <root>.Delegate
+      $this: VALUE_PARAMETER name:<this> type:<root>.Delegate
+    FUN FAKE_OVERRIDE name:equals visibility:public modality:OPEN <> ($this:kotlin.Any, other:kotlin.Any?) returnType:kotlin.Boolean [fake_override,operator]
+      overridden:
+        public open fun equals (other: kotlin.Any?): kotlin.Boolean [operator] declared in kotlin.Any
+      $this: VALUE_PARAMETER name:<this> type:kotlin.Any
+      VALUE_PARAMETER name:other index:0 type:kotlin.Any?
+    FUN FAKE_OVERRIDE name:hashCode visibility:public modality:OPEN <> ($this:kotlin.Any) returnType:kotlin.Int [fake_override]
+      overridden:
+        public open fun hashCode (): kotlin.Int declared in kotlin.Any
+      $this: VALUE_PARAMETER name:<this> type:kotlin.Any
+    FUN FAKE_OVERRIDE name:toString visibility:public modality:OPEN <> ($this:kotlin.Any) returnType:kotlin.String [fake_override]
+      overridden:
+        public open fun toString (): kotlin.String declared in kotlin.Any
+      $this: VALUE_PARAMETER name:<this> type:kotlin.Any
+  CLASS CLASS name:DataClass modality:FINAL visibility:public [data] superTypes:[<root>.Derived; <root>.Delegate]
+    $this: VALUE_PARAMETER INSTANCE_RECEIVER name:<this> type:<root>.DataClass
+    CONSTRUCTOR visibility:public <> (delegate:<root>.Delegate) returnType:<root>.DataClass [primary]
+      VALUE_PARAMETER name:delegate index:0 type:<root>.Delegate
+      BLOCK_BODY
+        DELEGATING_CONSTRUCTOR_CALL 'public constructor <init> () [primary] declared in kotlin.Any'
+        INSTANCE_INITIALIZER_CALL classDescriptor='CLASS CLASS name:DataClass modality:FINAL visibility:public [data] superTypes:[<root>.Derived; <root>.Delegate]'
+        SET_FIELD 'FIELD DELEGATE name:<$$delegate_0> type:<root>.Delegate visibility:local [final]' type=kotlin.Unit origin=EQ
+          receiver: GET_VAR '<this>: <root>.DataClass declared in <root>.DataClass' type=<root>.DataClass origin=null
+          value: GET_VAR 'delegate: <root>.Delegate declared in <root>.DataClass.<init>' type=<root>.Delegate origin=null
+    PROPERTY name:delegate visibility:public modality:FINAL [val]
+      FIELD PROPERTY_BACKING_FIELD name:delegate type:<root>.Delegate visibility:private [final]
+        EXPRESSION_BODY
+          GET_VAR 'delegate: <root>.Delegate declared in <root>.DataClass.<init>' type=<root>.Delegate origin=INITIALIZE_PROPERTY_FROM_PARAMETER
+      FUN DEFAULT_PROPERTY_ACCESSOR name:<get-delegate> visibility:public modality:FINAL <> ($this:<root>.DataClass) returnType:<root>.Delegate
+        correspondingProperty: PROPERTY name:delegate visibility:public modality:FINAL [val]
+        $this: VALUE_PARAMETER name:<this> type:<root>.DataClass
+        BLOCK_BODY
+          RETURN type=kotlin.Nothing from='public final fun <get-delegate> (): <root>.Delegate declared in <root>.DataClass'
+            GET_FIELD 'FIELD PROPERTY_BACKING_FIELD name:delegate type:<root>.Delegate visibility:private [final]' type=<root>.Delegate origin=null
+              receiver: GET_VAR '<this>: <root>.DataClass declared in <root>.DataClass.<get-delegate>' type=<root>.DataClass origin=null
+    FUN name:component1 visibility:public modality:FINAL <> ($this:<root>.DataClass) returnType:<root>.Delegate
+      $this: VALUE_PARAMETER name:<this> type:<root>.DataClass
+      BLOCK_BODY
+        RETURN type=kotlin.Nothing from='public final fun component1 (): <root>.Delegate declared in <root>.DataClass'
+          GET_FIELD 'FIELD PROPERTY_BACKING_FIELD name:delegate type:<root>.Delegate visibility:private [final]' type=<root>.Delegate origin=null
+            receiver: GET_VAR '<this>: <root>.DataClass declared in <root>.DataClass.component1' type=<root>.DataClass origin=null
+    FUN name:copy visibility:public modality:FINAL <> ($this:<root>.DataClass, delegate:<root>.Delegate) returnType:<root>.DataClass
+      $this: VALUE_PARAMETER name:<this> type:<root>.DataClass
+      VALUE_PARAMETER name:delegate index:0 type:<root>.Delegate
+        EXPRESSION_BODY
+          GET_FIELD 'FIELD PROPERTY_BACKING_FIELD name:delegate type:<root>.Delegate visibility:private [final]' type=<root>.Delegate origin=null
+            receiver: GET_VAR '<this>: <root>.DataClass declared in <root>.DataClass.copy' type=<root>.DataClass origin=null
+      BLOCK_BODY
+        RETURN type=kotlin.Nothing from='public final fun copy (delegate: <root>.Delegate): <root>.DataClass declared in <root>.DataClass'
+          CONSTRUCTOR_CALL 'public constructor <init> (delegate: <root>.Delegate) [primary] declared in <root>.DataClass' type=<root>.DataClass origin=null
+            delegate: GET_VAR 'delegate: <root>.Delegate declared in <root>.DataClass.copy' type=<root>.Delegate origin=null
+    FUN DELEGATED_MEMBER name:bar visibility:public modality:OPEN <> ($this:<root>.DataClass) returnType:kotlin.Unit
+      overridden:
+        public abstract fun bar (): kotlin.Unit declared in <root>.Delegate
+      $this: VALUE_PARAMETER name:<this> type:<root>.DataClass
+      BLOCK_BODY
+        CALL 'public abstract fun bar (): kotlin.Unit declared in <root>.Delegate' type=kotlin.Unit origin=null
+          $this: GET_FIELD 'FIELD DELEGATE name:<$$delegate_0> type:<root>.Delegate visibility:local [final]' type=<root>.Delegate origin=null
+            receiver: GET_VAR '<this>: <root>.DataClass declared in <root>.DataClass.bar' type=<root>.DataClass origin=null
+    FIELD DELEGATE name:<$$delegate_0> type:<root>.Delegate visibility:local [final]
+    FUN GENERATED_DATA_CLASS_MEMBER name:equals visibility:public modality:OPEN <> ($this:<root>.DataClass, other:kotlin.Any?) returnType:kotlin.Boolean
+      overridden:
+        public open fun equals (other: kotlin.Any?): kotlin.Boolean [operator] declared in kotlin.Any
+      $this: VALUE_PARAMETER GENERATED_DATA_CLASS_MEMBER name:<this> type:<root>.DataClass
+      VALUE_PARAMETER GENERATED_DATA_CLASS_MEMBER name:other index:0 type:kotlin.Any?
+      BLOCK_BODY
+        WHEN type=kotlin.Unit origin=null
+          BRANCH
+            if: CALL 'public final fun EQEQEQ (arg0: kotlin.Any?, arg1: kotlin.Any?): kotlin.Boolean declared in kotlin.internal.ir' type=kotlin.Boolean origin=EQEQEQ
+              arg0: GET_VAR '<this>: <root>.DataClass declared in <root>.DataClass.equals' type=<root>.DataClass origin=null
+              arg1: GET_VAR 'other: kotlin.Any? declared in <root>.DataClass.equals' type=kotlin.Any? origin=null
+            then: RETURN type=kotlin.Nothing from='public open fun equals (other: kotlin.Any?): kotlin.Boolean declared in <root>.DataClass'
+              CONST Boolean type=kotlin.Boolean value=true
+        WHEN type=kotlin.Unit origin=null
+          BRANCH
+            if: TYPE_OP type=kotlin.Boolean origin=NOT_INSTANCEOF typeOperand=<root>.DataClass
+              GET_VAR 'other: kotlin.Any? declared in <root>.DataClass.equals' type=kotlin.Any? origin=null
+            then: RETURN type=kotlin.Nothing from='public open fun equals (other: kotlin.Any?): kotlin.Boolean declared in <root>.DataClass'
+              CONST Boolean type=kotlin.Boolean value=false
+        VAR IR_TEMPORARY_VARIABLE name:tmp_0 type:<root>.DataClass [val]
+          TYPE_OP type=<root>.DataClass origin=CAST typeOperand=<root>.DataClass
+            GET_VAR 'other: kotlin.Any? declared in <root>.DataClass.equals' type=kotlin.Any? origin=null
+        WHEN type=kotlin.Unit origin=null
+          BRANCH
+            if: CALL 'public final fun not (): kotlin.Boolean [operator] declared in kotlin.Boolean' type=kotlin.Boolean origin=EXCLEQ
+              $this: CALL 'public final fun EQEQ (arg0: kotlin.Any?, arg1: kotlin.Any?): kotlin.Boolean declared in kotlin.internal.ir' type=kotlin.Boolean origin=EXCLEQ
+                arg0: GET_FIELD 'FIELD PROPERTY_BACKING_FIELD name:delegate type:<root>.Delegate visibility:private [final]' type=<root>.Delegate origin=null
+                  receiver: GET_VAR '<this>: <root>.DataClass declared in <root>.DataClass.equals' type=<root>.DataClass origin=null
+                arg1: GET_FIELD 'FIELD PROPERTY_BACKING_FIELD name:delegate type:<root>.Delegate visibility:private [final]' type=<root>.Delegate origin=null
+                  receiver: GET_VAR 'val tmp_0: <root>.DataClass [val] declared in <root>.DataClass.equals' type=<root>.DataClass origin=null
+            then: RETURN type=kotlin.Nothing from='public open fun equals (other: kotlin.Any?): kotlin.Boolean declared in <root>.DataClass'
+              CONST Boolean type=kotlin.Boolean value=false
+        RETURN type=kotlin.Nothing from='public open fun equals (other: kotlin.Any?): kotlin.Boolean declared in <root>.DataClass'
+          CONST Boolean type=kotlin.Boolean value=true
+    FUN GENERATED_DATA_CLASS_MEMBER name:hashCode visibility:public modality:OPEN <> ($this:<root>.DataClass) returnType:kotlin.Int
+      overridden:
+        public open fun hashCode (): kotlin.Int declared in kotlin.Any
+      $this: VALUE_PARAMETER GENERATED_DATA_CLASS_MEMBER name:<this> type:<root>.DataClass
+      BLOCK_BODY
+        RETURN type=kotlin.Nothing from='public open fun hashCode (): kotlin.Int declared in <root>.DataClass'
+          CALL 'public open fun hashCode (): kotlin.Int declared in kotlin.Any' type=kotlin.Int origin=null
+            $this: GET_FIELD 'FIELD PROPERTY_BACKING_FIELD name:delegate type:<root>.Delegate visibility:private [final]' type=<root>.Delegate origin=null
+              receiver: GET_VAR '<this>: <root>.DataClass declared in <root>.DataClass.hashCode' type=<root>.DataClass origin=null
+    FUN GENERATED_DATA_CLASS_MEMBER name:toString visibility:public modality:OPEN <> ($this:<root>.DataClass) returnType:kotlin.String
+      overridden:
+        public open fun toString (): kotlin.String declared in kotlin.Any
+      $this: VALUE_PARAMETER GENERATED_DATA_CLASS_MEMBER name:<this> type:<root>.DataClass
+      BLOCK_BODY
+        RETURN type=kotlin.Nothing from='public open fun toString (): kotlin.String declared in <root>.DataClass'
+          STRING_CONCATENATION type=kotlin.String
+            CONST String type=kotlin.String value="DataClass("
+            CONST String type=kotlin.String value="delegate="
+            GET_FIELD 'FIELD PROPERTY_BACKING_FIELD name:delegate type:<root>.Delegate visibility:private [final]' type=<root>.Delegate origin=null
+              receiver: GET_VAR '<this>: <root>.DataClass declared in <root>.DataClass.toString' type=<root>.DataClass origin=null
+            CONST String type=kotlin.String value=")"
diff --git a/compiler/testData/ir/irText/firProblems/SignatureClash.kt b/compiler/testData/ir/irText/firProblems/SignatureClash.kt
index e5aa52ada06..25c71f0e8ef 100644
--- a/compiler/testData/ir/irText/firProblems/SignatureClash.kt
+++ b/compiler/testData/ir/irText/firProblems/SignatureClash.kt
@@ -9,4 +9,14 @@ object Factory {
         a: String,
         f: Some
     ): String = "Omega"
-}
\ No newline at end of file
+}
+
+interface Base
+
+interface Delegate : Base {
+    fun bar()
+}
+
+interface Derived : Delegate
+
+data class DataClass(val delegate: Delegate): Derived, Delegate by delegate
\ No newline at end of file
diff --git a/compiler/testData/ir/irText/firProblems/SignatureClash.txt b/compiler/testData/ir/irText/firProblems/SignatureClash.txt
index 9e9979489b1..0ad1f3e60d2 100644
--- a/compiler/testData/ir/irText/firProblems/SignatureClash.txt
+++ b/compiler/testData/ir/irText/firProblems/SignatureClash.txt
@@ -32,3 +32,155 @@ FILE fqName:<root> fileName:/SignatureClash.kt
       overridden:
         public open fun toString (): kotlin.String declared in kotlin.Any
       $this: VALUE_PARAMETER name:<this> type:kotlin.Any
+  CLASS INTERFACE name:Base modality:ABSTRACT visibility:public superTypes:[kotlin.Any]
+    $this: VALUE_PARAMETER INSTANCE_RECEIVER name:<this> type:<root>.Base
+    FUN FAKE_OVERRIDE name:equals visibility:public modality:OPEN <> ($this:kotlin.Any, other:kotlin.Any?) returnType:kotlin.Boolean [fake_override,operator]
+      overridden:
+        public open fun equals (other: kotlin.Any?): kotlin.Boolean [operator] declared in kotlin.Any
+      $this: VALUE_PARAMETER name:<this> type:kotlin.Any
+      VALUE_PARAMETER name:other index:0 type:kotlin.Any?
+    FUN FAKE_OVERRIDE name:hashCode visibility:public modality:OPEN <> ($this:kotlin.Any) returnType:kotlin.Int [fake_override]
+      overridden:
+        public open fun hashCode (): kotlin.Int declared in kotlin.Any
+      $this: VALUE_PARAMETER name:<this> type:kotlin.Any
+    FUN FAKE_OVERRIDE name:toString visibility:public modality:OPEN <> ($this:kotlin.Any) returnType:kotlin.String [fake_override]
+      overridden:
+        public open fun toString (): kotlin.String declared in kotlin.Any
+      $this: VALUE_PARAMETER name:<this> type:kotlin.Any
+  CLASS INTERFACE name:Delegate modality:ABSTRACT visibility:public superTypes:[<root>.Base]
+    $this: VALUE_PARAMETER INSTANCE_RECEIVER name:<this> type:<root>.Delegate
+    FUN name:bar visibility:public modality:ABSTRACT <> ($this:<root>.Delegate) returnType:kotlin.Unit
+      $this: VALUE_PARAMETER name:<this> type:<root>.Delegate
+    FUN FAKE_OVERRIDE name:equals visibility:public modality:OPEN <> ($this:kotlin.Any, other:kotlin.Any?) returnType:kotlin.Boolean [fake_override,operator]
+      overridden:
+        public open fun equals (other: kotlin.Any?): kotlin.Boolean [fake_override,operator] declared in <root>.Base
+      $this: VALUE_PARAMETER name:<this> type:kotlin.Any
+      VALUE_PARAMETER name:other index:0 type:kotlin.Any?
+    FUN FAKE_OVERRIDE name:hashCode visibility:public modality:OPEN <> ($this:kotlin.Any) returnType:kotlin.Int [fake_override]
+      overridden:
+        public open fun hashCode (): kotlin.Int [fake_override] declared in <root>.Base
+      $this: VALUE_PARAMETER name:<this> type:kotlin.Any
+    FUN FAKE_OVERRIDE name:toString visibility:public modality:OPEN <> ($this:kotlin.Any) returnType:kotlin.String [fake_override]
+      overridden:
+        public open fun toString (): kotlin.String [fake_override] declared in <root>.Base
+      $this: VALUE_PARAMETER name:<this> type:kotlin.Any
+  CLASS INTERFACE name:Derived modality:ABSTRACT visibility:public superTypes:[<root>.Delegate]
+    $this: VALUE_PARAMETER INSTANCE_RECEIVER name:<this> type:<root>.Derived
+    FUN FAKE_OVERRIDE name:bar visibility:public modality:ABSTRACT <> ($this:<root>.Delegate) returnType:kotlin.Unit [fake_override]
+      overridden:
+        public abstract fun bar (): kotlin.Unit declared in <root>.Delegate
+      $this: VALUE_PARAMETER name:<this> type:<root>.Delegate
+    FUN FAKE_OVERRIDE name:equals visibility:public modality:OPEN <> ($this:kotlin.Any, other:kotlin.Any?) returnType:kotlin.Boolean [fake_override,operator]
+      overridden:
+        public open fun equals (other: kotlin.Any?): kotlin.Boolean [fake_override,operator] declared in <root>.Delegate
+      $this: VALUE_PARAMETER name:<this> type:kotlin.Any
+      VALUE_PARAMETER name:other index:0 type:kotlin.Any?
+    FUN FAKE_OVERRIDE name:hashCode visibility:public modality:OPEN <> ($this:kotlin.Any) returnType:kotlin.Int [fake_override]
+      overridden:
+        public open fun hashCode (): kotlin.Int [fake_override] declared in <root>.Delegate
+      $this: VALUE_PARAMETER name:<this> type:kotlin.Any
+    FUN FAKE_OVERRIDE name:toString visibility:public modality:OPEN <> ($this:kotlin.Any) returnType:kotlin.String [fake_override]
+      overridden:
+        public open fun toString (): kotlin.String [fake_override] declared in <root>.Delegate
+      $this: VALUE_PARAMETER name:<this> type:kotlin.Any
+  CLASS CLASS name:DataClass modality:FINAL visibility:public [data] superTypes:[<root>.Derived; <root>.Delegate]
+    $this: VALUE_PARAMETER INSTANCE_RECEIVER name:<this> type:<root>.DataClass
+    CONSTRUCTOR visibility:public <> (delegate:<root>.Delegate) returnType:<root>.DataClass [primary]
+      VALUE_PARAMETER name:delegate index:0 type:<root>.Delegate
+      BLOCK_BODY
+        DELEGATING_CONSTRUCTOR_CALL 'public constructor <init> () [primary] declared in kotlin.Any'
+        INSTANCE_INITIALIZER_CALL classDescriptor='CLASS CLASS name:DataClass modality:FINAL visibility:public [data] superTypes:[<root>.Derived; <root>.Delegate]'
+    PROPERTY name:delegate visibility:public modality:FINAL [val]
+      FIELD PROPERTY_BACKING_FIELD name:delegate type:<root>.Delegate visibility:private [final]
+        EXPRESSION_BODY
+          GET_VAR 'delegate: <root>.Delegate declared in <root>.DataClass.<init>' type=<root>.Delegate origin=INITIALIZE_PROPERTY_FROM_PARAMETER
+      FUN DEFAULT_PROPERTY_ACCESSOR name:<get-delegate> visibility:public modality:FINAL <> ($this:<root>.DataClass) returnType:<root>.Delegate
+        correspondingProperty: PROPERTY name:delegate visibility:public modality:FINAL [val]
+        $this: VALUE_PARAMETER name:<this> type:<root>.DataClass
+        BLOCK_BODY
+          RETURN type=kotlin.Nothing from='public final fun <get-delegate> (): <root>.Delegate declared in <root>.DataClass'
+            GET_FIELD 'FIELD PROPERTY_BACKING_FIELD name:delegate type:<root>.Delegate visibility:private [final]' type=<root>.Delegate origin=null
+              receiver: GET_VAR '<this>: <root>.DataClass declared in <root>.DataClass.<get-delegate>' type=<root>.DataClass origin=null
+    FUN DELEGATED_MEMBER name:bar visibility:public modality:OPEN <> ($this:<root>.DataClass) returnType:kotlin.Unit
+      overridden:
+        public abstract fun bar (): kotlin.Unit [fake_override] declared in <root>.Derived
+        public abstract fun bar (): kotlin.Unit declared in <root>.Delegate
+      $this: VALUE_PARAMETER name:<this> type:<root>.DataClass
+      BLOCK_BODY
+        CALL 'public abstract fun bar (): kotlin.Unit declared in <root>.Delegate' type=kotlin.Unit origin=null
+          $this: GET_FIELD 'FIELD PROPERTY_BACKING_FIELD name:delegate type:<root>.Delegate visibility:private [final]' type=<root>.Delegate origin=null
+            receiver: GET_VAR '<this>: <root>.DataClass declared in <root>.DataClass.bar' type=<root>.DataClass origin=null
+    FUN GENERATED_DATA_CLASS_MEMBER name:component1 visibility:public modality:FINAL <> ($this:<root>.DataClass) returnType:<root>.Delegate [operator]
+      $this: VALUE_PARAMETER name:<this> type:<root>.DataClass
+      BLOCK_BODY
+        RETURN type=kotlin.Nothing from='public final fun component1 (): <root>.Delegate [operator] declared in <root>.DataClass'
+          GET_FIELD 'FIELD PROPERTY_BACKING_FIELD name:delegate type:<root>.Delegate visibility:private [final]' type=<root>.Delegate origin=null
+            receiver: GET_VAR '<this>: <root>.DataClass declared in <root>.DataClass.component1' type=<root>.DataClass origin=null
+    FUN GENERATED_DATA_CLASS_MEMBER name:copy visibility:public modality:FINAL <> ($this:<root>.DataClass, delegate:<root>.Delegate) returnType:<root>.DataClass
+      $this: VALUE_PARAMETER name:<this> type:<root>.DataClass
+      VALUE_PARAMETER name:delegate index:0 type:<root>.Delegate
+        EXPRESSION_BODY
+          GET_FIELD 'FIELD PROPERTY_BACKING_FIELD name:delegate type:<root>.Delegate visibility:private [final]' type=<root>.Delegate origin=null
+            receiver: GET_VAR '<this>: <root>.DataClass declared in <root>.DataClass.copy' type=<root>.DataClass origin=null
+      BLOCK_BODY
+        RETURN type=kotlin.Nothing from='public final fun copy (delegate: <root>.Delegate): <root>.DataClass declared in <root>.DataClass'
+          CONSTRUCTOR_CALL 'public constructor <init> (delegate: <root>.Delegate) [primary] declared in <root>.DataClass' type=<root>.DataClass origin=null
+            delegate: GET_VAR 'delegate: <root>.Delegate declared in <root>.DataClass.copy' type=<root>.Delegate origin=null
+    FUN GENERATED_DATA_CLASS_MEMBER name:toString visibility:public modality:OPEN <> ($this:<root>.DataClass) returnType:kotlin.String
+      overridden:
+        public open fun toString (): kotlin.String [fake_override] declared in <root>.Derived
+        public open fun toString (): kotlin.String [fake_override] declared in <root>.Delegate
+      $this: VALUE_PARAMETER name:<this> type:<root>.DataClass
+      BLOCK_BODY
+        RETURN type=kotlin.Nothing from='public open fun toString (): kotlin.String declared in <root>.DataClass'
+          STRING_CONCATENATION type=kotlin.String
+            CONST String type=kotlin.String value="DataClass("
+            CONST String type=kotlin.String value="delegate="
+            GET_FIELD 'FIELD PROPERTY_BACKING_FIELD name:delegate type:<root>.Delegate visibility:private [final]' type=<root>.Delegate origin=null
+              receiver: GET_VAR '<this>: <root>.DataClass declared in <root>.DataClass.toString' type=<root>.DataClass origin=null
+            CONST String type=kotlin.String value=")"
+    FUN GENERATED_DATA_CLASS_MEMBER name:hashCode visibility:public modality:OPEN <> ($this:<root>.DataClass) returnType:kotlin.Int
+      overridden:
+        public open fun hashCode (): kotlin.Int [fake_override] declared in <root>.Derived
+        public open fun hashCode (): kotlin.Int [fake_override] declared in <root>.Delegate
+      $this: VALUE_PARAMETER name:<this> type:<root>.DataClass
+      BLOCK_BODY
+        RETURN type=kotlin.Nothing from='public open fun hashCode (): kotlin.Int declared in <root>.DataClass'
+          CALL 'public open fun hashCode (): kotlin.Int [fake_override] declared in <root>.Delegate' type=kotlin.Int origin=null
+            $this: GET_FIELD 'FIELD PROPERTY_BACKING_FIELD name:delegate type:<root>.Delegate visibility:private [final]' type=<root>.Delegate origin=null
+              receiver: GET_VAR '<this>: <root>.DataClass declared in <root>.DataClass.hashCode' type=<root>.DataClass origin=null
+    FUN GENERATED_DATA_CLASS_MEMBER name:equals visibility:public modality:OPEN <> ($this:<root>.DataClass, other:kotlin.Any?) returnType:kotlin.Boolean [operator]
+      overridden:
+        public open fun equals (other: kotlin.Any?): kotlin.Boolean [fake_override,operator] declared in <root>.Derived
+        public open fun equals (other: kotlin.Any?): kotlin.Boolean [fake_override,operator] declared in <root>.Delegate
+      $this: VALUE_PARAMETER name:<this> type:<root>.DataClass
+      VALUE_PARAMETER name:other index:0 type:kotlin.Any?
+      BLOCK_BODY
+        WHEN type=kotlin.Unit origin=null
+          BRANCH
+            if: CALL 'public final fun EQEQEQ (arg0: kotlin.Any?, arg1: kotlin.Any?): kotlin.Boolean declared in kotlin.internal.ir' type=kotlin.Boolean origin=EQEQEQ
+              arg0: GET_VAR '<this>: <root>.DataClass declared in <root>.DataClass.equals' type=<root>.DataClass origin=null
+              arg1: GET_VAR 'other: kotlin.Any? declared in <root>.DataClass.equals' type=kotlin.Any? origin=null
+            then: RETURN type=kotlin.Nothing from='public open fun equals (other: kotlin.Any?): kotlin.Boolean [operator] declared in <root>.DataClass'
+              CONST Boolean type=kotlin.Boolean value=true
+        WHEN type=kotlin.Unit origin=null
+          BRANCH
+            if: TYPE_OP type=kotlin.Boolean origin=NOT_INSTANCEOF typeOperand=<root>.DataClass
+              GET_VAR 'other: kotlin.Any? declared in <root>.DataClass.equals' type=kotlin.Any? origin=null
+            then: RETURN type=kotlin.Nothing from='public open fun equals (other: kotlin.Any?): kotlin.Boolean [operator] declared in <root>.DataClass'
+              CONST Boolean type=kotlin.Boolean value=false
+        VAR IR_TEMPORARY_VARIABLE name:tmp_0 type:<root>.DataClass [val]
+          TYPE_OP type=<root>.DataClass origin=CAST typeOperand=<root>.DataClass
+            GET_VAR 'other: kotlin.Any? declared in <root>.DataClass.equals' type=kotlin.Any? origin=null
+        WHEN type=kotlin.Unit origin=null
+          BRANCH
+            if: CALL 'public final fun not (): kotlin.Boolean [operator] declared in kotlin.Boolean' type=kotlin.Boolean origin=EXCLEQ
+              $this: CALL 'public final fun EQEQ (arg0: kotlin.Any?, arg1: kotlin.Any?): kotlin.Boolean declared in kotlin.internal.ir' type=kotlin.Boolean origin=EXCLEQ
+                arg0: GET_FIELD 'FIELD PROPERTY_BACKING_FIELD name:delegate type:<root>.Delegate visibility:private [final]' type=<root>.Delegate origin=null
+                  receiver: GET_VAR '<this>: <root>.DataClass declared in <root>.DataClass.equals' type=<root>.DataClass origin=null
+                arg1: GET_FIELD 'FIELD PROPERTY_BACKING_FIELD name:delegate type:<root>.Delegate visibility:private [final]' type=<root>.Delegate origin=null
+                  receiver: GET_VAR 'val tmp_0: <root>.DataClass [val] declared in <root>.DataClass.equals' type=<root>.DataClass origin=null
+            then: RETURN type=kotlin.Nothing from='public open fun equals (other: kotlin.Any?): kotlin.Boolean [operator] declared in <root>.DataClass'
+              CONST Boolean type=kotlin.Boolean value=false
+        RETURN type=kotlin.Nothing from='public open fun equals (other: kotlin.Any?): kotlin.Boolean [operator] declared in <root>.DataClass'
+          CONST Boolean type=kotlin.Boolean value=true