diff --git a/compiler/ir/backend.common/src/org/jetbrains/kotlin/backend/common/lower/inline/FunctionInlining.kt b/compiler/ir/backend.common/src/org/jetbrains/kotlin/backend/common/lower/inline/FunctionInlining.kt
index c253af4f438..c812084cf7c 100644
--- a/compiler/ir/backend.common/src/org/jetbrains/kotlin/backend/common/lower/inline/FunctionInlining.kt
+++ b/compiler/ir/backend.common/src/org/jetbrains/kotlin/backend/common/lower/inline/FunctionInlining.kt
@@ -881,7 +881,7 @@ class FunctionInlining(
     }
 
     private class IrGetValueWithoutLocation(
-        override val symbol: IrValueSymbol,
+        override var symbol: IrValueSymbol,
         override var origin: IrStatementOrigin? = null
     ) : IrGetValue() {
         override val startOffset: Int get() = UNDEFINED_OFFSET
diff --git a/compiler/ir/ir.tree/gen/org/jetbrains/kotlin/ir/expressions/IrCall.kt b/compiler/ir/ir.tree/gen/org/jetbrains/kotlin/ir/expressions/IrCall.kt
index 2f5861a170f..1d2bf40d15d 100644
--- a/compiler/ir/ir.tree/gen/org/jetbrains/kotlin/ir/expressions/IrCall.kt
+++ b/compiler/ir/ir.tree/gen/org/jetbrains/kotlin/ir/expressions/IrCall.kt
@@ -18,7 +18,7 @@ import org.jetbrains.kotlin.ir.visitors.IrElementVisitor
  * Generated from: [org.jetbrains.kotlin.ir.generator.IrTree.call]
  */
 abstract class IrCall : IrFunctionAccessExpression() {
-    abstract override val symbol: IrSimpleFunctionSymbol
+    abstract override var symbol: IrSimpleFunctionSymbol
 
     abstract var superQualifierSymbol: IrClassSymbol?
 
diff --git a/compiler/ir/ir.tree/gen/org/jetbrains/kotlin/ir/expressions/IrCallableReference.kt b/compiler/ir/ir.tree/gen/org/jetbrains/kotlin/ir/expressions/IrCallableReference.kt
index 8c094f385d6..531b2363bad 100644
--- a/compiler/ir/ir.tree/gen/org/jetbrains/kotlin/ir/expressions/IrCallableReference.kt
+++ b/compiler/ir/ir.tree/gen/org/jetbrains/kotlin/ir/expressions/IrCallableReference.kt
@@ -15,4 +15,6 @@ import org.jetbrains.kotlin.ir.symbols.IrSymbol
  *
  * Generated from: [org.jetbrains.kotlin.ir.generator.IrTree.callableReference]
  */
-abstract class IrCallableReference<S : IrSymbol> : IrMemberAccessExpression<S>()
+abstract class IrCallableReference<S : IrSymbol> : IrMemberAccessExpression<S>() {
+    abstract override var symbol: S
+}
diff --git a/compiler/ir/ir.tree/gen/org/jetbrains/kotlin/ir/expressions/IrClassReference.kt b/compiler/ir/ir.tree/gen/org/jetbrains/kotlin/ir/expressions/IrClassReference.kt
index 45848eaf0c7..8a898954fee 100644
--- a/compiler/ir/ir.tree/gen/org/jetbrains/kotlin/ir/expressions/IrClassReference.kt
+++ b/compiler/ir/ir.tree/gen/org/jetbrains/kotlin/ir/expressions/IrClassReference.kt
@@ -18,7 +18,7 @@ import org.jetbrains.kotlin.ir.visitors.IrElementVisitor
  * Generated from: [org.jetbrains.kotlin.ir.generator.IrTree.classReference]
  */
 abstract class IrClassReference : IrDeclarationReference() {
-    abstract override val symbol: IrClassifierSymbol
+    abstract override var symbol: IrClassifierSymbol
 
     abstract var classType: IrType
 
diff --git a/compiler/ir/ir.tree/gen/org/jetbrains/kotlin/ir/expressions/IrConstructorCall.kt b/compiler/ir/ir.tree/gen/org/jetbrains/kotlin/ir/expressions/IrConstructorCall.kt
index 9648d04052e..fc7cf879e89 100644
--- a/compiler/ir/ir.tree/gen/org/jetbrains/kotlin/ir/expressions/IrConstructorCall.kt
+++ b/compiler/ir/ir.tree/gen/org/jetbrains/kotlin/ir/expressions/IrConstructorCall.kt
@@ -18,7 +18,7 @@ import org.jetbrains.kotlin.ir.visitors.IrElementVisitor
  * Generated from: [org.jetbrains.kotlin.ir.generator.IrTree.constructorCall]
  */
 abstract class IrConstructorCall : IrFunctionAccessExpression() {
-    abstract override val symbol: IrConstructorSymbol
+    abstract override var symbol: IrConstructorSymbol
 
     abstract var source: SourceElement
 
diff --git a/compiler/ir/ir.tree/gen/org/jetbrains/kotlin/ir/expressions/IrDelegatingConstructorCall.kt b/compiler/ir/ir.tree/gen/org/jetbrains/kotlin/ir/expressions/IrDelegatingConstructorCall.kt
index bdafefb6242..b6bd1e7729d 100644
--- a/compiler/ir/ir.tree/gen/org/jetbrains/kotlin/ir/expressions/IrDelegatingConstructorCall.kt
+++ b/compiler/ir/ir.tree/gen/org/jetbrains/kotlin/ir/expressions/IrDelegatingConstructorCall.kt
@@ -17,7 +17,7 @@ import org.jetbrains.kotlin.ir.visitors.IrElementVisitor
  * Generated from: [org.jetbrains.kotlin.ir.generator.IrTree.delegatingConstructorCall]
  */
 abstract class IrDelegatingConstructorCall : IrFunctionAccessExpression() {
-    abstract override val symbol: IrConstructorSymbol
+    abstract override var symbol: IrConstructorSymbol
 
     override fun <R, D> accept(visitor: IrElementVisitor<R, D>, data: D): R =
         visitor.visitDelegatingConstructorCall(this, data)
diff --git a/compiler/ir/ir.tree/gen/org/jetbrains/kotlin/ir/expressions/IrEnumConstructorCall.kt b/compiler/ir/ir.tree/gen/org/jetbrains/kotlin/ir/expressions/IrEnumConstructorCall.kt
index db09f949d9a..c134df2d134 100644
--- a/compiler/ir/ir.tree/gen/org/jetbrains/kotlin/ir/expressions/IrEnumConstructorCall.kt
+++ b/compiler/ir/ir.tree/gen/org/jetbrains/kotlin/ir/expressions/IrEnumConstructorCall.kt
@@ -17,7 +17,7 @@ import org.jetbrains.kotlin.ir.visitors.IrElementVisitor
  * Generated from: [org.jetbrains.kotlin.ir.generator.IrTree.enumConstructorCall]
  */
 abstract class IrEnumConstructorCall : IrFunctionAccessExpression() {
-    abstract override val symbol: IrConstructorSymbol
+    abstract override var symbol: IrConstructorSymbol
 
     override fun <R, D> accept(visitor: IrElementVisitor<R, D>, data: D): R =
         visitor.visitEnumConstructorCall(this, data)
diff --git a/compiler/ir/ir.tree/gen/org/jetbrains/kotlin/ir/expressions/IrFieldAccessExpression.kt b/compiler/ir/ir.tree/gen/org/jetbrains/kotlin/ir/expressions/IrFieldAccessExpression.kt
index b835a320926..dd19e59738f 100644
--- a/compiler/ir/ir.tree/gen/org/jetbrains/kotlin/ir/expressions/IrFieldAccessExpression.kt
+++ b/compiler/ir/ir.tree/gen/org/jetbrains/kotlin/ir/expressions/IrFieldAccessExpression.kt
@@ -17,7 +17,7 @@ import org.jetbrains.kotlin.ir.symbols.IrFieldSymbol
  * Generated from: [org.jetbrains.kotlin.ir.generator.IrTree.fieldAccessExpression]
  */
 abstract class IrFieldAccessExpression : IrDeclarationReference() {
-    abstract override val symbol: IrFieldSymbol
+    abstract override var symbol: IrFieldSymbol
 
     abstract var superQualifierSymbol: IrClassSymbol?
 
diff --git a/compiler/ir/ir.tree/gen/org/jetbrains/kotlin/ir/expressions/IrGetEnumValue.kt b/compiler/ir/ir.tree/gen/org/jetbrains/kotlin/ir/expressions/IrGetEnumValue.kt
index 04e10f64822..4115cf5b104 100644
--- a/compiler/ir/ir.tree/gen/org/jetbrains/kotlin/ir/expressions/IrGetEnumValue.kt
+++ b/compiler/ir/ir.tree/gen/org/jetbrains/kotlin/ir/expressions/IrGetEnumValue.kt
@@ -17,7 +17,7 @@ import org.jetbrains.kotlin.ir.visitors.IrElementVisitor
  * Generated from: [org.jetbrains.kotlin.ir.generator.IrTree.getEnumValue]
  */
 abstract class IrGetEnumValue : IrGetSingletonValue() {
-    abstract override val symbol: IrEnumEntrySymbol
+    abstract override var symbol: IrEnumEntrySymbol
 
     override fun <R, D> accept(visitor: IrElementVisitor<R, D>, data: D): R =
         visitor.visitGetEnumValue(this, data)
diff --git a/compiler/ir/ir.tree/gen/org/jetbrains/kotlin/ir/expressions/IrGetObjectValue.kt b/compiler/ir/ir.tree/gen/org/jetbrains/kotlin/ir/expressions/IrGetObjectValue.kt
index f87d43cbed6..eee7c8cc6c8 100644
--- a/compiler/ir/ir.tree/gen/org/jetbrains/kotlin/ir/expressions/IrGetObjectValue.kt
+++ b/compiler/ir/ir.tree/gen/org/jetbrains/kotlin/ir/expressions/IrGetObjectValue.kt
@@ -17,7 +17,7 @@ import org.jetbrains.kotlin.ir.visitors.IrElementVisitor
  * Generated from: [org.jetbrains.kotlin.ir.generator.IrTree.getObjectValue]
  */
 abstract class IrGetObjectValue : IrGetSingletonValue() {
-    abstract override val symbol: IrClassSymbol
+    abstract override var symbol: IrClassSymbol
 
     override fun <R, D> accept(visitor: IrElementVisitor<R, D>, data: D): R =
         visitor.visitGetObjectValue(this, data)
diff --git a/compiler/ir/ir.tree/gen/org/jetbrains/kotlin/ir/expressions/IrRawFunctionReference.kt b/compiler/ir/ir.tree/gen/org/jetbrains/kotlin/ir/expressions/IrRawFunctionReference.kt
index 9bfc9ad81bb..994a024ffb6 100644
--- a/compiler/ir/ir.tree/gen/org/jetbrains/kotlin/ir/expressions/IrRawFunctionReference.kt
+++ b/compiler/ir/ir.tree/gen/org/jetbrains/kotlin/ir/expressions/IrRawFunctionReference.kt
@@ -17,7 +17,7 @@ import org.jetbrains.kotlin.ir.visitors.IrElementVisitor
  * Generated from: [org.jetbrains.kotlin.ir.generator.IrTree.rawFunctionReference]
  */
 abstract class IrRawFunctionReference : IrDeclarationReference() {
-    abstract override val symbol: IrFunctionSymbol
+    abstract override var symbol: IrFunctionSymbol
 
     override fun <R, D> accept(visitor: IrElementVisitor<R, D>, data: D): R =
         visitor.visitRawFunctionReference(this, data)
diff --git a/compiler/ir/ir.tree/gen/org/jetbrains/kotlin/ir/expressions/IrValueAccessExpression.kt b/compiler/ir/ir.tree/gen/org/jetbrains/kotlin/ir/expressions/IrValueAccessExpression.kt
index a4622e818fe..628231597a9 100644
--- a/compiler/ir/ir.tree/gen/org/jetbrains/kotlin/ir/expressions/IrValueAccessExpression.kt
+++ b/compiler/ir/ir.tree/gen/org/jetbrains/kotlin/ir/expressions/IrValueAccessExpression.kt
@@ -16,7 +16,7 @@ import org.jetbrains.kotlin.ir.symbols.IrValueSymbol
  * Generated from: [org.jetbrains.kotlin.ir.generator.IrTree.valueAccessExpression]
  */
 abstract class IrValueAccessExpression : IrDeclarationReference() {
-    abstract override val symbol: IrValueSymbol
+    abstract override var symbol: IrValueSymbol
 
     abstract var origin: IrStatementOrigin?
 }
diff --git a/compiler/ir/ir.tree/src/org/jetbrains/kotlin/ir/expressions/impl/IrCallImpl.kt b/compiler/ir/ir.tree/src/org/jetbrains/kotlin/ir/expressions/impl/IrCallImpl.kt
index f3d9e7b8579..92eb461cb2c 100644
--- a/compiler/ir/ir.tree/src/org/jetbrains/kotlin/ir/expressions/impl/IrCallImpl.kt
+++ b/compiler/ir/ir.tree/src/org/jetbrains/kotlin/ir/expressions/impl/IrCallImpl.kt
@@ -33,7 +33,7 @@ class IrCallImpl(
     override val startOffset: Int,
     override val endOffset: Int,
     override var type: IrType,
-    override val symbol: IrSimpleFunctionSymbol,
+    override var symbol: IrSimpleFunctionSymbol,
     typeArgumentsCount: Int,
     valueArgumentsCount: Int,
     override var origin: IrStatementOrigin? = null,
diff --git a/compiler/ir/ir.tree/src/org/jetbrains/kotlin/ir/expressions/impl/IrClassReferenceImpl.kt b/compiler/ir/ir.tree/src/org/jetbrains/kotlin/ir/expressions/impl/IrClassReferenceImpl.kt
index cc93ed04bed..8d4036efb96 100644
--- a/compiler/ir/ir.tree/src/org/jetbrains/kotlin/ir/expressions/impl/IrClassReferenceImpl.kt
+++ b/compiler/ir/ir.tree/src/org/jetbrains/kotlin/ir/expressions/impl/IrClassReferenceImpl.kt
@@ -24,6 +24,6 @@ class IrClassReferenceImpl(
     override val startOffset: Int,
     override val endOffset: Int,
     override var type: IrType,
-    override val symbol: IrClassifierSymbol,
+    override var symbol: IrClassifierSymbol,
     override var classType: IrType
 ) : IrClassReference()
diff --git a/compiler/ir/ir.tree/src/org/jetbrains/kotlin/ir/expressions/impl/IrConstructorCallImpl.kt b/compiler/ir/ir.tree/src/org/jetbrains/kotlin/ir/expressions/impl/IrConstructorCallImpl.kt
index 8d79bd14bf5..ee0acbc3756 100644
--- a/compiler/ir/ir.tree/src/org/jetbrains/kotlin/ir/expressions/impl/IrConstructorCallImpl.kt
+++ b/compiler/ir/ir.tree/src/org/jetbrains/kotlin/ir/expressions/impl/IrConstructorCallImpl.kt
@@ -21,7 +21,7 @@ class IrConstructorCallImpl(
     override val startOffset: Int,
     override val endOffset: Int,
     override var type: IrType,
-    override val symbol: IrConstructorSymbol,
+    override var symbol: IrConstructorSymbol,
     typeArgumentsCount: Int,
     override var constructorTypeArgumentsCount: Int,
     valueArgumentsCount: Int,
diff --git a/compiler/ir/ir.tree/src/org/jetbrains/kotlin/ir/expressions/impl/IrDelegatingConstructorCallImpl.kt b/compiler/ir/ir.tree/src/org/jetbrains/kotlin/ir/expressions/impl/IrDelegatingConstructorCallImpl.kt
index be1f0b2fc18..271c52ecd69 100644
--- a/compiler/ir/ir.tree/src/org/jetbrains/kotlin/ir/expressions/impl/IrDelegatingConstructorCallImpl.kt
+++ b/compiler/ir/ir.tree/src/org/jetbrains/kotlin/ir/expressions/impl/IrDelegatingConstructorCallImpl.kt
@@ -31,7 +31,7 @@ class IrDelegatingConstructorCallImpl(
     override val startOffset: Int,
     override val endOffset: Int,
     override var type: IrType,
-    override val symbol: IrConstructorSymbol,
+    override var symbol: IrConstructorSymbol,
     typeArgumentsCount: Int,
     valueArgumentsCount: Int,
 ) : IrDelegatingConstructorCall() {
diff --git a/compiler/ir/ir.tree/src/org/jetbrains/kotlin/ir/expressions/impl/IrEnumConstructorCallImpl.kt b/compiler/ir/ir.tree/src/org/jetbrains/kotlin/ir/expressions/impl/IrEnumConstructorCallImpl.kt
index b37a2df7c19..4eca8c43145 100644
--- a/compiler/ir/ir.tree/src/org/jetbrains/kotlin/ir/expressions/impl/IrEnumConstructorCallImpl.kt
+++ b/compiler/ir/ir.tree/src/org/jetbrains/kotlin/ir/expressions/impl/IrEnumConstructorCallImpl.kt
@@ -29,7 +29,7 @@ class IrEnumConstructorCallImpl(
     override val startOffset: Int,
     override val endOffset: Int,
     override var type: IrType,
-    override val symbol: IrConstructorSymbol,
+    override var symbol: IrConstructorSymbol,
     typeArgumentsCount: Int,
     valueArgumentsCount: Int
 ) : IrEnumConstructorCall() {
diff --git a/compiler/ir/ir.tree/src/org/jetbrains/kotlin/ir/expressions/impl/IrFunctionReferenceImpl.kt b/compiler/ir/ir.tree/src/org/jetbrains/kotlin/ir/expressions/impl/IrFunctionReferenceImpl.kt
index fea6daf53ee..25c8cacd25e 100644
--- a/compiler/ir/ir.tree/src/org/jetbrains/kotlin/ir/expressions/impl/IrFunctionReferenceImpl.kt
+++ b/compiler/ir/ir.tree/src/org/jetbrains/kotlin/ir/expressions/impl/IrFunctionReferenceImpl.kt
@@ -29,7 +29,7 @@ class IrFunctionReferenceImpl(
     override val startOffset: Int,
     override val endOffset: Int,
     override var type: IrType,
-    override val symbol: IrFunctionSymbol,
+    override var symbol: IrFunctionSymbol,
     typeArgumentsCount: Int,
     valueArgumentsCount: Int,
     override var reflectionTarget: IrFunctionSymbol? = symbol,
diff --git a/compiler/ir/ir.tree/src/org/jetbrains/kotlin/ir/expressions/impl/IrGetEnumValueImpl.kt b/compiler/ir/ir.tree/src/org/jetbrains/kotlin/ir/expressions/impl/IrGetEnumValueImpl.kt
index 3c8918c26aa..159be203505 100644
--- a/compiler/ir/ir.tree/src/org/jetbrains/kotlin/ir/expressions/impl/IrGetEnumValueImpl.kt
+++ b/compiler/ir/ir.tree/src/org/jetbrains/kotlin/ir/expressions/impl/IrGetEnumValueImpl.kt
@@ -24,5 +24,5 @@ class IrGetEnumValueImpl(
     override val startOffset: Int,
     override val endOffset: Int,
     override var type: IrType,
-    override val symbol: IrEnumEntrySymbol,
+    override var symbol: IrEnumEntrySymbol,
 ) : IrGetEnumValue()
diff --git a/compiler/ir/ir.tree/src/org/jetbrains/kotlin/ir/expressions/impl/IrGetFieldImpl.kt b/compiler/ir/ir.tree/src/org/jetbrains/kotlin/ir/expressions/impl/IrGetFieldImpl.kt
index c6672cd91f3..b76f2c4dc78 100644
--- a/compiler/ir/ir.tree/src/org/jetbrains/kotlin/ir/expressions/impl/IrGetFieldImpl.kt
+++ b/compiler/ir/ir.tree/src/org/jetbrains/kotlin/ir/expressions/impl/IrGetFieldImpl.kt
@@ -26,7 +26,7 @@ import org.jetbrains.kotlin.ir.types.IrType
 class IrGetFieldImpl(
     override val startOffset: Int,
     override val endOffset: Int,
-    override val symbol: IrFieldSymbol,
+    override var symbol: IrFieldSymbol,
     override var type: IrType,
     override var origin: IrStatementOrigin? = null,
     override var superQualifierSymbol: IrClassSymbol? = null,
diff --git a/compiler/ir/ir.tree/src/org/jetbrains/kotlin/ir/expressions/impl/IrGetObjectValueImpl.kt b/compiler/ir/ir.tree/src/org/jetbrains/kotlin/ir/expressions/impl/IrGetObjectValueImpl.kt
index df7385396b6..dcce2e06f32 100644
--- a/compiler/ir/ir.tree/src/org/jetbrains/kotlin/ir/expressions/impl/IrGetObjectValueImpl.kt
+++ b/compiler/ir/ir.tree/src/org/jetbrains/kotlin/ir/expressions/impl/IrGetObjectValueImpl.kt
@@ -24,5 +24,5 @@ class IrGetObjectValueImpl(
     override val startOffset: Int,
     override val endOffset: Int,
     override var type: IrType,
-    override val symbol: IrClassSymbol
+    override var symbol: IrClassSymbol
 ) : IrGetObjectValue()
diff --git a/compiler/ir/ir.tree/src/org/jetbrains/kotlin/ir/expressions/impl/IrGetValueImpl.kt b/compiler/ir/ir.tree/src/org/jetbrains/kotlin/ir/expressions/impl/IrGetValueImpl.kt
index 3cb4d9fe2c1..7f2eb6d43e2 100644
--- a/compiler/ir/ir.tree/src/org/jetbrains/kotlin/ir/expressions/impl/IrGetValueImpl.kt
+++ b/compiler/ir/ir.tree/src/org/jetbrains/kotlin/ir/expressions/impl/IrGetValueImpl.kt
@@ -14,7 +14,7 @@ class IrGetValueImpl(
     override val startOffset: Int,
     override val endOffset: Int,
     override var type: IrType,
-    override val symbol: IrValueSymbol,
+    override var symbol: IrValueSymbol,
     override var origin: IrStatementOrigin? = null
 ) : IrGetValue() {
     constructor(
diff --git a/compiler/ir/ir.tree/src/org/jetbrains/kotlin/ir/expressions/impl/IrLocalDelegatedPropertyReferenceImpl.kt b/compiler/ir/ir.tree/src/org/jetbrains/kotlin/ir/expressions/impl/IrLocalDelegatedPropertyReferenceImpl.kt
index 7314a728bf6..d66bc9a599a 100644
--- a/compiler/ir/ir.tree/src/org/jetbrains/kotlin/ir/expressions/impl/IrLocalDelegatedPropertyReferenceImpl.kt
+++ b/compiler/ir/ir.tree/src/org/jetbrains/kotlin/ir/expressions/impl/IrLocalDelegatedPropertyReferenceImpl.kt
@@ -30,7 +30,7 @@ class IrLocalDelegatedPropertyReferenceImpl(
     override val startOffset: Int,
     override val endOffset: Int,
     override var type: IrType,
-    override val symbol: IrLocalDelegatedPropertySymbol,
+    override var symbol: IrLocalDelegatedPropertySymbol,
     override var delegate: IrVariableSymbol,
     override var getter: IrSimpleFunctionSymbol,
     override var setter: IrSimpleFunctionSymbol?,
diff --git a/compiler/ir/ir.tree/src/org/jetbrains/kotlin/ir/expressions/impl/IrPropertyReferenceImpl.kt b/compiler/ir/ir.tree/src/org/jetbrains/kotlin/ir/expressions/impl/IrPropertyReferenceImpl.kt
index 6208aff3fad..b1092d6be88 100644
--- a/compiler/ir/ir.tree/src/org/jetbrains/kotlin/ir/expressions/impl/IrPropertyReferenceImpl.kt
+++ b/compiler/ir/ir.tree/src/org/jetbrains/kotlin/ir/expressions/impl/IrPropertyReferenceImpl.kt
@@ -30,7 +30,7 @@ class IrPropertyReferenceImpl(
     override val startOffset: Int,
     override val endOffset: Int,
     override var type: IrType,
-    override val symbol: IrPropertySymbol,
+    override var symbol: IrPropertySymbol,
     typeArgumentsCount: Int,
     override var field: IrFieldSymbol?,
     override var getter: IrSimpleFunctionSymbol?,
diff --git a/compiler/ir/ir.tree/src/org/jetbrains/kotlin/ir/expressions/impl/IrRawFunctionReferenceImpl.kt b/compiler/ir/ir.tree/src/org/jetbrains/kotlin/ir/expressions/impl/IrRawFunctionReferenceImpl.kt
index 70f71679afa..2ab930649a7 100644
--- a/compiler/ir/ir.tree/src/org/jetbrains/kotlin/ir/expressions/impl/IrRawFunctionReferenceImpl.kt
+++ b/compiler/ir/ir.tree/src/org/jetbrains/kotlin/ir/expressions/impl/IrRawFunctionReferenceImpl.kt
@@ -24,5 +24,5 @@ class IrRawFunctionReferenceImpl(
     override val startOffset: Int,
     override val endOffset: Int,
     override var type: IrType,
-    override val symbol: IrFunctionSymbol,
+    override var symbol: IrFunctionSymbol,
 ) : IrRawFunctionReference()
diff --git a/compiler/ir/ir.tree/src/org/jetbrains/kotlin/ir/expressions/impl/IrSetFieldImpl.kt b/compiler/ir/ir.tree/src/org/jetbrains/kotlin/ir/expressions/impl/IrSetFieldImpl.kt
index ab797f7cce5..5b960ca0bf5 100644
--- a/compiler/ir/ir.tree/src/org/jetbrains/kotlin/ir/expressions/impl/IrSetFieldImpl.kt
+++ b/compiler/ir/ir.tree/src/org/jetbrains/kotlin/ir/expressions/impl/IrSetFieldImpl.kt
@@ -26,7 +26,7 @@ import org.jetbrains.kotlin.ir.types.IrType
 class IrSetFieldImpl(
     override val startOffset: Int,
     override val endOffset: Int,
-    override val symbol: IrFieldSymbol,
+    override var symbol: IrFieldSymbol,
     override var type: IrType,
     override var origin: IrStatementOrigin? = null,
     override var superQualifierSymbol: IrClassSymbol? = null,
diff --git a/compiler/ir/ir.tree/src/org/jetbrains/kotlin/ir/expressions/impl/IrSetValueImpl.kt b/compiler/ir/ir.tree/src/org/jetbrains/kotlin/ir/expressions/impl/IrSetValueImpl.kt
index 5bf48b4eaff..49d026a1c6a 100644
--- a/compiler/ir/ir.tree/src/org/jetbrains/kotlin/ir/expressions/impl/IrSetValueImpl.kt
+++ b/compiler/ir/ir.tree/src/org/jetbrains/kotlin/ir/expressions/impl/IrSetValueImpl.kt
@@ -26,7 +26,7 @@ class IrSetValueImpl(
     override val startOffset: Int,
     override val endOffset: Int,
     override var type: IrType,
-    override val symbol: IrValueSymbol,
+    override var symbol: IrValueSymbol,
     override var value: IrExpression,
     override var origin: IrStatementOrigin?
 ) : IrSetValue() {
diff --git a/compiler/ir/ir.tree/tree-generator/src/org/jetbrains/kotlin/ir/generator/IrTree.kt b/compiler/ir/ir.tree/tree-generator/src/org/jetbrains/kotlin/ir/generator/IrTree.kt
index a7a4822b315..a65d1df48a5 100644
--- a/compiler/ir/ir.tree/tree-generator/src/org/jetbrains/kotlin/ir/generator/IrTree.kt
+++ b/compiler/ir/ir.tree/tree-generator/src/org/jetbrains/kotlin/ir/generator/IrTree.kt
@@ -31,8 +31,9 @@ import org.jetbrains.kotlin.types.Variance
 // 2) parents
 // 3) fields
 object IrTree : AbstractTreeBuilder() {
-    private fun symbol(type: TypeRef) = field("symbol", type, mutable = false)
-    private fun descriptor(typeName: String) =
+    private fun symbol(type: TypeRef, mutable: Boolean = false): SimpleFieldConfig =
+        field("symbol", type, mutable = mutable)
+    private fun descriptor(typeName: String): SimpleFieldConfig =
         field("descriptor", ClassRef<TypeParameterRef>(TypeKind.Interface, "org.jetbrains.kotlin.descriptors", typeName), mutable = false)
 
     private val factory: SimpleFieldConfig = field("factory", type(Packages.declarations, "IrFactory"), mutable = false)
@@ -716,7 +717,7 @@ object IrTree : AbstractTreeBuilder() {
 
         parent(functionAccessExpression)
 
-        +symbol(constructorSymbolType)
+        +symbol(constructorSymbolType, mutable = true)
         +field("source", type<SourceElement>())
         +field("constructorTypeArgumentsCount", int)
     }
@@ -731,14 +732,14 @@ object IrTree : AbstractTreeBuilder() {
 
         parent(getSingletonValue)
 
-        +symbol(classSymbolType)
+        +symbol(classSymbolType, mutable = true)
     }
     val getEnumValue: ElementConfig by element(Expression) {
         visitorParent = getSingletonValue
 
         parent(getSingletonValue)
 
-        +symbol(enumEntrySymbolType)
+        +symbol(enumEntrySymbolType, mutable = true)
     }
 
     /**
@@ -752,7 +753,7 @@ object IrTree : AbstractTreeBuilder() {
 
         parent(declarationReference)
 
-        +symbol(functionSymbolType)
+        +symbol(functionSymbolType, mutable = true)
     }
     val containerExpression: ElementConfig by element(Expression) {
         visitorParent = expression
@@ -828,7 +829,7 @@ object IrTree : AbstractTreeBuilder() {
 
         parent(functionAccessExpression)
 
-        +symbol(simpleFunctionSymbolType)
+        +symbol(simpleFunctionSymbolType, mutable = true)
         +field("superQualifierSymbol", classSymbolType, nullable = true)
     }
     val callableReference: ElementConfig by element(Expression) {
@@ -836,6 +837,8 @@ object IrTree : AbstractTreeBuilder() {
         val s = +param("S", symbolType)
 
         parent(memberAccessExpression.withArgs("S" to s))
+
+        +symbol(s, mutable = true)
     }
     val functionReference: ElementConfig by element(Expression) {
         visitorParent = callableReference
@@ -867,7 +870,7 @@ object IrTree : AbstractTreeBuilder() {
 
         parent(declarationReference)
 
-        +symbol(classifierSymbolType)
+        +symbol(classifierSymbolType, mutable = true)
         +field("classType", irTypeType)
     }
     val const: ElementConfig by element(Expression) {
@@ -929,7 +932,7 @@ object IrTree : AbstractTreeBuilder() {
 
         parent(functionAccessExpression)
 
-        +symbol(constructorSymbolType)
+        +symbol(constructorSymbolType, mutable = true)
     }
     val dynamicExpression: ElementConfig by element(Expression) {
         visitorParent = expression
@@ -958,7 +961,7 @@ object IrTree : AbstractTreeBuilder() {
 
         parent(functionAccessExpression)
 
-        +symbol(constructorSymbolType)
+        +symbol(constructorSymbolType, mutable = true)
     }
     val errorExpression: ElementConfig by element(Expression) {
         visitorParent = expression
@@ -983,7 +986,7 @@ object IrTree : AbstractTreeBuilder() {
 
         parent(declarationReference)
 
-        +symbol(fieldSymbolType)
+        +symbol(fieldSymbolType, mutable = true)
         +field("superQualifierSymbol", classSymbolType, nullable = true)
         +field("receiver", expression, nullable = true, isChild = true) {
             baseDefaultValue = code("null")
@@ -1128,7 +1131,7 @@ object IrTree : AbstractTreeBuilder() {
 
         parent(declarationReference)
 
-        +symbol(valueSymbolType)
+        +symbol(valueSymbolType, mutable = true)
         +field("origin", statementOriginType, nullable = true)
     }
     val getValue: ElementConfig by element(Expression) {