diff --git a/compiler/ir/ir.tree/gen/org/jetbrains/kotlin/ir/expressions/IrBlockBody.kt b/compiler/ir/ir.tree/gen/org/jetbrains/kotlin/ir/expressions/IrBlockBody.kt
index 54ce577b56f..023c9981639 100644
--- a/compiler/ir/ir.tree/gen/org/jetbrains/kotlin/ir/expressions/IrBlockBody.kt
+++ b/compiler/ir/ir.tree/gen/org/jetbrains/kotlin/ir/expressions/IrBlockBody.kt
@@ -8,7 +8,6 @@
 
 package org.jetbrains.kotlin.ir.expressions
 
-import org.jetbrains.kotlin.ir.declarations.IrFactory
 import org.jetbrains.kotlin.ir.util.transformInPlace
 import org.jetbrains.kotlin.ir.visitors.IrElementTransformer
 import org.jetbrains.kotlin.ir.visitors.IrElementVisitor
@@ -17,8 +16,6 @@ import org.jetbrains.kotlin.ir.visitors.IrElementVisitor
  * Generated from: [org.jetbrains.kotlin.ir.generator.IrTree.blockBody]
  */
 abstract class IrBlockBody : IrBody(), IrStatementContainer {
-    abstract val factory: IrFactory
-
     override fun <R, D> accept(visitor: IrElementVisitor<R, D>, data: D): R =
         visitor.visitBlockBody(this, data)
 
diff --git a/compiler/ir/ir.tree/gen/org/jetbrains/kotlin/ir/expressions/IrExpressionBody.kt b/compiler/ir/ir.tree/gen/org/jetbrains/kotlin/ir/expressions/IrExpressionBody.kt
index b0c85da4ef3..eadbd30c766 100644
--- a/compiler/ir/ir.tree/gen/org/jetbrains/kotlin/ir/expressions/IrExpressionBody.kt
+++ b/compiler/ir/ir.tree/gen/org/jetbrains/kotlin/ir/expressions/IrExpressionBody.kt
@@ -8,7 +8,6 @@
 
 package org.jetbrains.kotlin.ir.expressions
 
-import org.jetbrains.kotlin.ir.declarations.IrFactory
 import org.jetbrains.kotlin.ir.visitors.IrElementTransformer
 import org.jetbrains.kotlin.ir.visitors.IrElementVisitor
 
@@ -16,8 +15,6 @@ import org.jetbrains.kotlin.ir.visitors.IrElementVisitor
  * Generated from: [org.jetbrains.kotlin.ir.generator.IrTree.expressionBody]
  */
 abstract class IrExpressionBody : IrBody() {
-    abstract val factory: IrFactory
-
     abstract var expression: IrExpression
 
     override fun <R, D> accept(visitor: IrElementVisitor<R, D>, data: D): R =
diff --git a/compiler/ir/ir.tree/src/org/jetbrains/kotlin/ir/expressions/impl/IrBlockBodyImpl.kt b/compiler/ir/ir.tree/src/org/jetbrains/kotlin/ir/expressions/impl/IrBlockBodyImpl.kt
index 5aa53b17e58..38ebf5dc25c 100644
--- a/compiler/ir/ir.tree/src/org/jetbrains/kotlin/ir/expressions/impl/IrBlockBodyImpl.kt
+++ b/compiler/ir/ir.tree/src/org/jetbrains/kotlin/ir/expressions/impl/IrBlockBodyImpl.kt
@@ -7,8 +7,6 @@ package org.jetbrains.kotlin.ir.expressions.impl
 
 import org.jetbrains.kotlin.ir.IrImplementationDetail
 import org.jetbrains.kotlin.ir.IrStatement
-import org.jetbrains.kotlin.ir.declarations.IrFactory
-import org.jetbrains.kotlin.ir.declarations.impl.IrFactoryImpl
 import org.jetbrains.kotlin.ir.expressions.IrBlockBody
 
 class IrBlockBodyImpl @IrImplementationDetail constructor(
@@ -16,7 +14,4 @@ class IrBlockBodyImpl @IrImplementationDetail constructor(
     override val endOffset: Int
 ) : IrBlockBody() {
     override val statements: MutableList<IrStatement> = ArrayList(2)
-
-    override val factory: IrFactory
-        get() = IrFactoryImpl
 }
diff --git a/compiler/ir/ir.tree/src/org/jetbrains/kotlin/ir/expressions/impl/IrExpressionBodyImpl.kt b/compiler/ir/ir.tree/src/org/jetbrains/kotlin/ir/expressions/impl/IrExpressionBodyImpl.kt
index 295cb785f87..0dd8d12e759 100644
--- a/compiler/ir/ir.tree/src/org/jetbrains/kotlin/ir/expressions/impl/IrExpressionBodyImpl.kt
+++ b/compiler/ir/ir.tree/src/org/jetbrains/kotlin/ir/expressions/impl/IrExpressionBodyImpl.kt
@@ -1,24 +1,11 @@
 /*
- * Copyright 2010-2016 JetBrains s.r.o.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
+ * Copyright 2010-2024 JetBrains s.r.o. and Kotlin Programming Language contributors.
+ * Use of this source code is governed by the Apache 2.0 license that can be found in the license/LICENSE.txt file.
  */
 
 package org.jetbrains.kotlin.ir.expressions.impl
 
 import org.jetbrains.kotlin.ir.IrImplementationDetail
-import org.jetbrains.kotlin.ir.declarations.IrFactory
-import org.jetbrains.kotlin.ir.declarations.impl.IrFactoryImpl
 import org.jetbrains.kotlin.ir.expressions.IrExpression
 import org.jetbrains.kotlin.ir.expressions.IrExpressionBody
 
@@ -26,8 +13,4 @@ class IrExpressionBodyImpl @IrImplementationDetail constructor(
     override val startOffset: Int,
     override val endOffset: Int,
     override var expression: IrExpression,
-) : IrExpressionBody() {
-
-    override val factory: IrFactory
-        get() = IrFactoryImpl
-}
+) : IrExpressionBody()
diff --git a/compiler/ir/ir.tree/src/org/jetbrains/kotlin/ir/util/DeepCopyIrTreeWithSymbols.kt b/compiler/ir/ir.tree/src/org/jetbrains/kotlin/ir/util/DeepCopyIrTreeWithSymbols.kt
index 13112ddf6f2..eb2f4496dd1 100644
--- a/compiler/ir/ir.tree/src/org/jetbrains/kotlin/ir/util/DeepCopyIrTreeWithSymbols.kt
+++ b/compiler/ir/ir.tree/src/org/jetbrains/kotlin/ir/util/DeepCopyIrTreeWithSymbols.kt
@@ -1,5 +1,5 @@
 /*
- * Copyright 2010-2020 JetBrains s.r.o. and Kotlin Programming Language contributors.
+ * Copyright 2010-2024 JetBrains s.r.o. and Kotlin Programming Language contributors.
  * Use of this source code is governed by the Apache 2.0 license that can be found in the license/LICENSE.txt file.
  */
 
@@ -417,10 +417,10 @@ open class DeepCopyIrTreeWithSymbols(
         throw IllegalArgumentException("Unsupported body type: $body")
 
     override fun visitExpressionBody(body: IrExpressionBody): IrExpressionBody =
-        body.factory.createExpressionBody(body.expression.transform())
+        IrFactoryImpl.createExpressionBody(body.expression.transform())
 
     override fun visitBlockBody(body: IrBlockBody): IrBlockBody =
-        body.factory.createBlockBody(
+        IrFactoryImpl.createBlockBody(
             body.startOffset, body.endOffset,
             body.statements.memoryOptimizedMap { it.transform() }
         )
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 350e9489539..ae56f28d723 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
@@ -1,5 +1,5 @@
 /*
- * Copyright 2010-2021 JetBrains s.r.o. and Kotlin Programming Language contributors.
+ * Copyright 2010-2024 JetBrains s.r.o. and Kotlin Programming Language contributors.
  * Use of this source code is governed by the Apache 2.0 license that can be found in the license/LICENSE.txt file.
  */
 
@@ -704,7 +704,6 @@ object IrTree : AbstractTreeBuilder() {
 
         parent(body)
 
-        +factory
         +field("expression", expression) {
             useFieldInIrFactory()
         }
@@ -715,8 +714,6 @@ object IrTree : AbstractTreeBuilder() {
 
         parent(body)
         parent(statementContainer)
-
-        +factory
     }
     val declarationReference: Element by element(Expression) {
         parent(expression)