diff --git a/backend.native/compiler/ir/backend.native/src/org/jetbrains/kotlin/backend/common/IrElementTransformerVoidWithContext.kt b/backend.native/compiler/ir/backend.native/src/org/jetbrains/kotlin/backend/common/IrElementTransformerVoidWithContext.kt
index 94ed32b1d90..d03de2bbfff 100644
--- a/backend.native/compiler/ir/backend.native/src/org/jetbrains/kotlin/backend/common/IrElementTransformerVoidWithContext.kt
+++ b/backend.native/compiler/ir/backend.native/src/org/jetbrains/kotlin/backend/common/IrElementTransformerVoidWithContext.kt
@@ -24,12 +24,6 @@ import org.jetbrains.kotlin.ir.visitors.IrElementTransformerVoid
 import org.jetbrains.kotlin.ir.visitors.IrElementVisitorVoid
 import org.jetbrains.kotlin.descriptors.*
 
-private fun <E> MutableList<E>.push(element: E) = this.add(element)
-
-private fun <E> MutableList<E>.pop() = this.removeAt(size - 1)
-
-private fun <E> MutableList<E>.peek(): E? = if (size == 0) null else this[size - 1]
-
 internal class ScopeWithIr(val scope: Scope, val irElement: IrElement)
 
 abstract internal class IrElementTransformerVoidWithContext : IrElementTransformerVoid() {
diff --git a/backend.native/compiler/ir/backend.native/src/org/jetbrains/kotlin/backend/common/Utils.kt b/backend.native/compiler/ir/backend.native/src/org/jetbrains/kotlin/backend/common/Utils.kt
index 41433806827..c68d17df735 100644
--- a/backend.native/compiler/ir/backend.native/src/org/jetbrains/kotlin/backend/common/Utils.kt
+++ b/backend.native/compiler/ir/backend.native/src/org/jetbrains/kotlin/backend/common/Utils.kt
@@ -40,4 +40,11 @@ val BackendContext.messageCollector: MessageCollector
 fun BackendContext.reportWarning(message: String, irFile: IrFile, irElement: IrElement) {
     val location = irElement.getCompilerMessageLocation(irFile)
     this.messageCollector.report(CompilerMessageSeverity.WARNING, message, location)
-}
\ No newline at end of file
+}
+
+fun <E> MutableList<E>.push(element: E) = this.add(element)
+
+fun <E> MutableList<E>.pop() = this.removeAt(size - 1)
+
+fun <E> MutableList<E>.peek(): E? = if (size == 0) null else this[size - 1]
+
diff --git a/backend.native/compiler/ir/backend.native/src/org/jetbrains/kotlin/backend/common/lower/AbstractClosureAnnotator.kt b/backend.native/compiler/ir/backend.native/src/org/jetbrains/kotlin/backend/common/lower/AbstractClosureAnnotator.kt
index dde301fa103..d80d85f54b9 100644
--- a/backend.native/compiler/ir/backend.native/src/org/jetbrains/kotlin/backend/common/lower/AbstractClosureAnnotator.kt
+++ b/backend.native/compiler/ir/backend.native/src/org/jetbrains/kotlin/backend/common/lower/AbstractClosureAnnotator.kt
@@ -16,6 +16,7 @@
 
 package org.jetbrains.kotlin.backend.common.lower
 
+import org.jetbrains.kotlin.backend.common.*
 import org.jetbrains.kotlin.descriptors.*
 import org.jetbrains.kotlin.ir.IrElement
 import org.jetbrains.kotlin.ir.declarations.*
@@ -31,12 +32,6 @@ import org.jetbrains.kotlin.resolve.DescriptorUtils
 // TODO: rename the file.
 class Closure(val capturedValues: List<ValueDescriptor> = emptyList())
 
-private fun <E> MutableList<E>.push(element: E) = this.add(element)
-
-private fun <E> MutableList<E>.pop() = this.removeAt(size - 1)
-
-private fun <E> MutableList<E>.peek(): E? = if (size == 0) null else this[size - 1]
-
 class ClosureAnnotator   {
     private val closureBuilders = mutableMapOf<DeclarationDescriptor, ClosureBuilder>()
 
diff --git a/backend.native/compiler/ir/backend.native/src/org/jetbrains/kotlin/backend/konan/lower/FinallyBlocksLowering.kt b/backend.native/compiler/ir/backend.native/src/org/jetbrains/kotlin/backend/konan/lower/FinallyBlocksLowering.kt
index d4c77f5bc07..32908bd697f 100644
--- a/backend.native/compiler/ir/backend.native/src/org/jetbrains/kotlin/backend/konan/lower/FinallyBlocksLowering.kt
+++ b/backend.native/compiler/ir/backend.native/src/org/jetbrains/kotlin/backend/konan/lower/FinallyBlocksLowering.kt
@@ -3,6 +3,7 @@ package org.jetbrains.kotlin.backend.konan.lower
 import org.jetbrains.kotlin.backend.common.DeepCopyIrTreeWithDeclarations
 import org.jetbrains.kotlin.backend.common.FunctionLoweringPass
 import org.jetbrains.kotlin.backend.common.lower.*
+import org.jetbrains.kotlin.backend.common.*
 import org.jetbrains.kotlin.backend.konan.Context
 import org.jetbrains.kotlin.backend.konan.descriptors.synthesizedName
 import org.jetbrains.kotlin.backend.konan.ir.IrReturnableBlockImpl
@@ -26,12 +27,6 @@ import org.jetbrains.kotlin.types.typeUtil.isUnit
 
 internal class FinallyBlocksLowering(val context: Context): FunctionLoweringPass {
 
-    private fun <E> MutableList<E>.push(element: E) = this.add(element)
-
-    private fun <E> MutableList<E>.pop() = this.removeAt(size - 1)
-
-    private fun <E> MutableList<E>.peek(): E? = if (size == 0) null else this[size - 1]
-
     private interface HighLevelJump {
         fun toIr(context: Context, startOffset: Int, endOffset: Int, value: IrExpression): IrExpression
     }
diff --git a/backend.native/compiler/ir/backend.native/src/org/jetbrains/kotlin/backend/konan/lower/SuspendFunctionsLowering.kt b/backend.native/compiler/ir/backend.native/src/org/jetbrains/kotlin/backend/konan/lower/SuspendFunctionsLowering.kt
index 2ea4c52cedd..a71ee1b4a4b 100644
--- a/backend.native/compiler/ir/backend.native/src/org/jetbrains/kotlin/backend/konan/lower/SuspendFunctionsLowering.kt
+++ b/backend.native/compiler/ir/backend.native/src/org/jetbrains/kotlin/backend/konan/lower/SuspendFunctionsLowering.kt
@@ -20,6 +20,7 @@ import org.jetbrains.kotlin.backend.common.DeclarationContainerLoweringPass
 import org.jetbrains.kotlin.backend.common.descriptors.explicitParameters
 import org.jetbrains.kotlin.backend.common.descriptors.isSuspend
 import org.jetbrains.kotlin.backend.common.lower.*
+import org.jetbrains.kotlin.backend.common.*
 import org.jetbrains.kotlin.backend.konan.Context
 import org.jetbrains.kotlin.backend.konan.descriptors.getKonanInternalClass
 import org.jetbrains.kotlin.backend.konan.descriptors.getKonanInternalFunctions
@@ -1288,12 +1289,6 @@ internal class SuspendFunctionsLowering(val context: Context): DeclarationContai
 
     private open class VariablesScopeTracker: IrElementVisitorVoid {
 
-        private fun <E> MutableList<E>.push(element: E) = this.add(element)
-
-        private fun <E> MutableList<E>.pop() = this.removeAt(size - 1)
-
-        private fun <E> MutableList<E>.peek(): E? = if (size == 0) null else this[size - 1]
-
         protected val scopeStack = mutableListOf<MutableSet<VariableDescriptor>>(mutableSetOf())
 
         override fun visitElement(element: IrElement) {