diff --git a/compiler/fir/entrypoint/src/org/jetbrains/kotlin/fir/pipeline/convertToIr.kt b/compiler/fir/entrypoint/src/org/jetbrains/kotlin/fir/pipeline/convertToIr.kt
index e6b6f82b793..050aeb8dc42 100644
--- a/compiler/fir/entrypoint/src/org/jetbrains/kotlin/fir/pipeline/convertToIr.kt
+++ b/compiler/fir/entrypoint/src/org/jetbrains/kotlin/fir/pipeline/convertToIr.kt
@@ -5,6 +5,7 @@
 
 package org.jetbrains.kotlin.fir.pipeline
 
+import org.jetbrains.kotlin.KtDiagnosticReporterWithImplicitIrBasedContext
 import org.jetbrains.kotlin.backend.common.actualizer.IrActualizedResult
 import org.jetbrains.kotlin.backend.common.actualizer.IrActualizer
 import org.jetbrains.kotlin.backend.common.extensions.IrGenerationExtension
@@ -143,9 +144,11 @@ fun FirResult.convertToIrAndActualize(
             actualizationResult = IrActualizer.actualize(
                 fir2IrResult.irModuleFragment,
                 commonIrOutputs.map { it.irModuleFragment },
-                fir2IrConfiguration.diagnosticReporter,
+                KtDiagnosticReporterWithImplicitIrBasedContext(
+                    fir2IrConfiguration.diagnosticReporter,
+                    fir2IrConfiguration.languageVersionSettings
+                ),
                 actualizerTypeContextProvider(fir2IrResult.irModuleFragment.irBuiltins),
-                fir2IrConfiguration.languageVersionSettings,
                 commonMemberStorage.symbolTable,
                 fir2IrResult.components.fakeOverrideBuilder,
                 fir2IrConfiguration.useIrFakeOverrideBuilder,
diff --git a/compiler/ir/backend.common/src/org/jetbrains/kotlin/KtDiagnosticReporterWithImplicitIrBasedContext.kt b/compiler/ir/backend.common/src/org/jetbrains/kotlin/KtDiagnosticReporterWithImplicitIrBasedContext.kt
index 9af9faa5c73..b370fc83200 100644
--- a/compiler/ir/backend.common/src/org/jetbrains/kotlin/KtDiagnosticReporterWithImplicitIrBasedContext.kt
+++ b/compiler/ir/backend.common/src/org/jetbrains/kotlin/KtDiagnosticReporterWithImplicitIrBasedContext.kt
@@ -13,6 +13,7 @@ import org.jetbrains.kotlin.diagnostics.DiagnosticReporter
 import org.jetbrains.kotlin.diagnostics.KtDiagnostic
 import org.jetbrains.kotlin.diagnostics.KtDiagnosticReporterWithContext
 import org.jetbrains.kotlin.ir.IrElement
+import org.jetbrains.kotlin.ir.IrDiagnosticReporter
 import org.jetbrains.kotlin.ir.declarations.IrAnnotationContainer
 import org.jetbrains.kotlin.ir.declarations.IrDeclaration
 import org.jetbrains.kotlin.ir.declarations.IrFile
@@ -28,7 +29,7 @@ import java.util.*
 class KtDiagnosticReporterWithImplicitIrBasedContext(
     diagnosticReporter: DiagnosticReporter,
     languageVersionSettings: LanguageVersionSettings
-) : KtDiagnosticReporterWithContext(diagnosticReporter, languageVersionSettings) {
+) : KtDiagnosticReporterWithContext(diagnosticReporter, languageVersionSettings), IrDiagnosticReporter {
 
     private val suppressCache = IrBasedSuppressCache()
 
@@ -36,13 +37,13 @@ class KtDiagnosticReporterWithImplicitIrBasedContext(
         (PsiSourceManager.findPsiElement(this, containingIrFile)?.let(::KtRealPsiSourceElement)
             ?: sourceElement())
 
-    fun at(irElement: IrElement, containingIrDeclaration: IrDeclaration): DiagnosticContextImpl =
+    override fun at(irElement: IrElement, containingIrDeclaration: IrDeclaration): DiagnosticContextImpl =
         at(irElement, containingIrDeclaration.file)
 
-    fun at(irDeclaration: IrDeclaration): DiagnosticContextImpl =
+    override fun at(irDeclaration: IrDeclaration): DiagnosticContextImpl =
         at(irDeclaration, irDeclaration.file)
 
-    fun at(irElement: IrElement, containingIrFile: IrFile): DiagnosticContextImpl =
+    override fun at(irElement: IrElement, containingIrFile: IrFile): DiagnosticContextImpl =
         at(irElement.toSourceElement(containingIrFile), irElement, containingIrFile)
 
     fun at(
diff --git a/compiler/ir/ir.actualization/src/main/kotlin/org/jetbrains/kotlin/backend/common/actualizer/ActualFakeOverridesAdder.kt b/compiler/ir/ir.actualization/src/main/kotlin/org/jetbrains/kotlin/backend/common/actualizer/ActualFakeOverridesAdder.kt
index 800b909b40e..7b44ceb9d0e 100644
--- a/compiler/ir/ir.actualization/src/main/kotlin/org/jetbrains/kotlin/backend/common/actualizer/ActualFakeOverridesAdder.kt
+++ b/compiler/ir/ir.actualization/src/main/kotlin/org/jetbrains/kotlin/backend/common/actualizer/ActualFakeOverridesAdder.kt
@@ -5,8 +5,6 @@
 
 package org.jetbrains.kotlin.backend.common.actualizer
 
-import org.jetbrains.kotlin.KtDiagnosticReporterWithImplicitIrBasedContext
-import org.jetbrains.kotlin.backend.common.CommonBackendErrors
 import org.jetbrains.kotlin.descriptors.DescriptorVisibilities
 import org.jetbrains.kotlin.ir.IrElement
 import org.jetbrains.kotlin.ir.declarations.*
@@ -16,7 +14,6 @@ import org.jetbrains.kotlin.ir.symbols.IrPropertySymbol
 import org.jetbrains.kotlin.ir.symbols.IrSymbol
 import org.jetbrains.kotlin.ir.types.IrTypeSystemContext
 import org.jetbrains.kotlin.ir.types.classifierOrFail
-import org.jetbrains.kotlin.ir.util.isInterface
 import org.jetbrains.kotlin.ir.visitors.IrElementVisitorVoid
 import org.jetbrains.kotlin.ir.visitors.acceptChildrenVoid
 import org.jetbrains.kotlin.name.ClassId
@@ -35,7 +32,6 @@ import org.jetbrains.kotlin.resolve.OverridingUtil
 internal class ActualFakeOverridesAdder(
     private val expectActualMap: Map<IrSymbol, IrSymbol>,
     private val expectToActualClassMap: Map<ClassId, IrClassSymbol>,
-    private val diagnosticsReporter: KtDiagnosticReporterWithImplicitIrBasedContext,
     private val typeSystemContext: IrTypeSystemContext
 ) : IrElementVisitorVoid {
     private val overrideChecker = IrOverrideChecker(typeSystemContext, emptyList())
diff --git a/compiler/ir/ir.actualization/src/main/kotlin/org/jetbrains/kotlin/backend/common/actualizer/ExpectActualCollector.kt b/compiler/ir/ir.actualization/src/main/kotlin/org/jetbrains/kotlin/backend/common/actualizer/ExpectActualCollector.kt
index 35e98b405c9..0106b7db9bc 100644
--- a/compiler/ir/ir.actualization/src/main/kotlin/org/jetbrains/kotlin/backend/common/actualizer/ExpectActualCollector.kt
+++ b/compiler/ir/ir.actualization/src/main/kotlin/org/jetbrains/kotlin/backend/common/actualizer/ExpectActualCollector.kt
@@ -5,7 +5,7 @@
 
 package org.jetbrains.kotlin.backend.common.actualizer
 
-import org.jetbrains.kotlin.KtDiagnosticReporterWithImplicitIrBasedContext
+import org.jetbrains.kotlin.ir.IrDiagnosticReporter
 import org.jetbrains.kotlin.config.LanguageVersionSettings
 import org.jetbrains.kotlin.incremental.components.ExpectActualTracker
 import org.jetbrains.kotlin.ir.IrElement
@@ -47,7 +47,7 @@ internal class ExpectActualCollector(
     private val mainFragment: IrModuleFragment,
     private val dependentFragments: List<IrModuleFragment>,
     private val typeSystemContext: IrTypeSystemContext,
-    private val diagnosticsReporter: KtDiagnosticReporterWithImplicitIrBasedContext,
+    private val diagnosticsReporter: IrDiagnosticReporter,
     private val expectActualTracker: ExpectActualTracker?,
 ) {
     data class Result(val expectToActualMap: MutableMap<IrSymbol, IrSymbol>, val classActualizationInfo: ClassActualizationInfo)
@@ -246,7 +246,7 @@ private class ExpectActualLinkCollector : IrElementVisitor<Unit, ExpectActualLin
     class MatchingContext(
         typeSystemContext: IrTypeSystemContext,
         private val destination: MutableMap<IrSymbol, IrSymbol>,
-        private val diagnosticsReporter: KtDiagnosticReporterWithImplicitIrBasedContext,
+        private val diagnosticsReporter: IrDiagnosticReporter,
         private val expectActualTracker: ExpectActualTracker?,
         internal val classActualizationInfo: ClassActualizationInfo,
         private val currentExpectFile: IrFile?,
diff --git a/compiler/ir/ir.actualization/src/main/kotlin/org/jetbrains/kotlin/backend/common/actualizer/IrActualizer.kt b/compiler/ir/ir.actualization/src/main/kotlin/org/jetbrains/kotlin/backend/common/actualizer/IrActualizer.kt
index 29c80807aab..b7ce9f2be79 100644
--- a/compiler/ir/ir.actualization/src/main/kotlin/org/jetbrains/kotlin/backend/common/actualizer/IrActualizer.kt
+++ b/compiler/ir/ir.actualization/src/main/kotlin/org/jetbrains/kotlin/backend/common/actualizer/IrActualizer.kt
@@ -5,11 +5,8 @@
 
 package org.jetbrains.kotlin.backend.common.actualizer
 
-import org.jetbrains.kotlin.KtDiagnosticReporterWithImplicitIrBasedContext
+import org.jetbrains.kotlin.ir.IrDiagnosticReporter
 import org.jetbrains.kotlin.backend.common.actualizer.checker.IrExpectActualCheckers
-import org.jetbrains.kotlin.config.LanguageFeature
-import org.jetbrains.kotlin.config.LanguageVersionSettings
-import org.jetbrains.kotlin.diagnostics.DiagnosticReporter
 import org.jetbrains.kotlin.incremental.components.ExpectActualTracker
 import org.jetbrains.kotlin.ir.declarations.*
 import org.jetbrains.kotlin.ir.overrides.IrFakeOverrideBuilder
@@ -30,15 +27,13 @@ object IrActualizer {
     fun actualize(
         mainFragment: IrModuleFragment,
         dependentFragments: List<IrModuleFragment>,
-        diagnosticReporter: DiagnosticReporter,
+        ktDiagnosticReporter: IrDiagnosticReporter,
         typeSystemContext: IrTypeSystemContext,
-        languageVersionSettings: LanguageVersionSettings,
         symbolTable: SymbolTable,
         fakeOverrideBuilder: IrFakeOverrideBuilder,
         useIrFakeOverrideBuilder: Boolean,
         expectActualTracker: ExpectActualTracker?
     ): IrActualizedResult {
-        val ktDiagnosticReporter = KtDiagnosticReporterWithImplicitIrBasedContext(diagnosticReporter, languageVersionSettings)
 
         // The ir modules processing is performed phase-to-phase:
         //   1. Collect expect-actual links for classes and their members from dependent fragments
@@ -67,7 +62,6 @@ object IrActualizer {
             ActualFakeOverridesAdder(
                 expectActualMap,
                 actualDeclarations.actualClasses,
-                ktDiagnosticReporter,
                 typeSystemContext
             ).apply { dependentFragments.forEach { visitModuleFragment(it) } }
         }
diff --git a/compiler/ir/ir.actualization/src/main/kotlin/org/jetbrains/kotlin/backend/common/actualizer/IrActualizerUtils.kt b/compiler/ir/ir.actualization/src/main/kotlin/org/jetbrains/kotlin/backend/common/actualizer/IrActualizerUtils.kt
index 288acc745d1..12c436e39e7 100644
--- a/compiler/ir/ir.actualization/src/main/kotlin/org/jetbrains/kotlin/backend/common/actualizer/IrActualizerUtils.kt
+++ b/compiler/ir/ir.actualization/src/main/kotlin/org/jetbrains/kotlin/backend/common/actualizer/IrActualizerUtils.kt
@@ -5,7 +5,7 @@
 
 package org.jetbrains.kotlin.backend.common.actualizer
 
-import org.jetbrains.kotlin.KtDiagnosticReporterWithImplicitIrBasedContext
+import org.jetbrains.kotlin.ir.IrDiagnosticReporter
 import org.jetbrains.kotlin.backend.common.CommonBackendErrors
 import org.jetbrains.kotlin.descriptors.ClassKind
 import org.jetbrains.kotlin.ir.IrElement
@@ -94,12 +94,12 @@ private fun recordTypeParametersMapping(
         }
 }
 
-internal fun KtDiagnosticReporterWithImplicitIrBasedContext.reportMissingActual(expectSymbol: IrSymbol) {
+internal fun IrDiagnosticReporter.reportMissingActual(expectSymbol: IrSymbol) {
     reportMissingActual(expectSymbol.owner as IrDeclaration)
 }
 
 @OptIn(ObsoleteDescriptorBasedAPI::class)
-internal fun KtDiagnosticReporterWithImplicitIrBasedContext.reportMissingActual(irDeclaration: IrDeclaration) {
+internal fun IrDiagnosticReporter.reportMissingActual(irDeclaration: IrDeclaration) {
     at(irDeclaration).report(
         CommonBackendErrors.NO_ACTUAL_FOR_EXPECT,
         (irDeclaration as? IrDeclarationWithName)?.name?.asString().orEmpty(),
@@ -107,7 +107,7 @@ internal fun KtDiagnosticReporterWithImplicitIrBasedContext.reportMissingActual(
     )
 }
 
-internal fun KtDiagnosticReporterWithImplicitIrBasedContext.reportExpectActualIncompatibility(
+internal fun IrDiagnosticReporter.reportExpectActualIncompatibility(
     expectSymbol: IrSymbol,
     actualSymbol: IrSymbol,
     incompatibility: ExpectActualCheckingCompatibility.Incompatible<*>,
@@ -122,7 +122,7 @@ internal fun KtDiagnosticReporterWithImplicitIrBasedContext.reportExpectActualIn
     )
 }
 
-internal fun KtDiagnosticReporterWithImplicitIrBasedContext.reportExpectActualMismatch(
+internal fun IrDiagnosticReporter.reportExpectActualMismatch(
     expectSymbol: IrSymbol,
     actualSymbol: IrSymbol,
     incompatibility: ExpectActualMatchingCompatibility.Mismatch,
@@ -137,7 +137,7 @@ internal fun KtDiagnosticReporterWithImplicitIrBasedContext.reportExpectActualMi
     )
 }
 
-internal fun KtDiagnosticReporterWithImplicitIrBasedContext.reportActualAnnotationsNotMatchExpect(
+internal fun IrDiagnosticReporter.reportActualAnnotationsNotMatchExpect(
     expectSymbol: IrSymbol,
     actualSymbol: IrSymbol,
     incompatibilityType: ExpectActualAnnotationsIncompatibilityType<IrConstructorCall>,
@@ -151,7 +151,7 @@ internal fun KtDiagnosticReporterWithImplicitIrBasedContext.reportActualAnnotati
     )
 }
 
-internal fun KtDiagnosticReporterWithImplicitIrBasedContext.reportActualAnnotationConflictingDefaultArgumentValue(
+internal fun IrDiagnosticReporter.reportActualAnnotationConflictingDefaultArgumentValue(
     reportOn: IrElement,
     file: IrFile,
     actualParam: IrValueParameter,
diff --git a/compiler/ir/ir.actualization/src/main/kotlin/org/jetbrains/kotlin/backend/common/actualizer/checker/IrExpectActualChecker.kt b/compiler/ir/ir.actualization/src/main/kotlin/org/jetbrains/kotlin/backend/common/actualizer/checker/IrExpectActualChecker.kt
index 2de15cf0457..0369f63265b 100644
--- a/compiler/ir/ir.actualization/src/main/kotlin/org/jetbrains/kotlin/backend/common/actualizer/checker/IrExpectActualChecker.kt
+++ b/compiler/ir/ir.actualization/src/main/kotlin/org/jetbrains/kotlin/backend/common/actualizer/checker/IrExpectActualChecker.kt
@@ -5,7 +5,7 @@
 
 package org.jetbrains.kotlin.backend.common.actualizer.checker
 
-import org.jetbrains.kotlin.KtDiagnosticReporterWithImplicitIrBasedContext
+import org.jetbrains.kotlin.ir.IrDiagnosticReporter
 import org.jetbrains.kotlin.backend.common.actualizer.ClassActualizationInfo
 import org.jetbrains.kotlin.backend.common.actualizer.IrExpectActualMatchingContext
 import org.jetbrains.kotlin.ir.symbols.IrSymbol
@@ -16,7 +16,7 @@ internal interface IrExpectActualChecker {
         val matchedExpectToActual: Map<IrSymbol, IrSymbol>
         val classActualizationInfo: ClassActualizationInfo
         val typeSystemContext: IrTypeSystemContext
-        val diagnosticsReporter: KtDiagnosticReporterWithImplicitIrBasedContext
+        val diagnosticsReporter: IrDiagnosticReporter
         val matchingContext: IrExpectActualMatchingContext
     }
 
diff --git a/compiler/ir/ir.actualization/src/main/kotlin/org/jetbrains/kotlin/backend/common/actualizer/checker/IrExpectActualCheckers.kt b/compiler/ir/ir.actualization/src/main/kotlin/org/jetbrains/kotlin/backend/common/actualizer/checker/IrExpectActualCheckers.kt
index 0f6fd06ab24..9d59c6a9678 100644
--- a/compiler/ir/ir.actualization/src/main/kotlin/org/jetbrains/kotlin/backend/common/actualizer/checker/IrExpectActualCheckers.kt
+++ b/compiler/ir/ir.actualization/src/main/kotlin/org/jetbrains/kotlin/backend/common/actualizer/checker/IrExpectActualCheckers.kt
@@ -5,7 +5,7 @@
 
 package org.jetbrains.kotlin.backend.common.actualizer.checker
 
-import org.jetbrains.kotlin.KtDiagnosticReporterWithImplicitIrBasedContext
+import org.jetbrains.kotlin.ir.IrDiagnosticReporter
 import org.jetbrains.kotlin.backend.common.actualizer.ClassActualizationInfo
 import org.jetbrains.kotlin.backend.common.actualizer.IrExpectActualMatchingContext
 import org.jetbrains.kotlin.ir.symbols.IrClassSymbol
@@ -16,7 +16,7 @@ internal class IrExpectActualCheckers(
     override val matchedExpectToActual: Map<IrSymbol, IrSymbol>,
     override val classActualizationInfo: ClassActualizationInfo,
     override val typeSystemContext: IrTypeSystemContext,
-    override val diagnosticsReporter: KtDiagnosticReporterWithImplicitIrBasedContext,
+    override val diagnosticsReporter: IrDiagnosticReporter,
 ) : IrExpectActualChecker.Context {
 
     private val checkers: Set<IrExpectActualChecker> = setOf(
diff --git a/compiler/ir/ir.tree/src/org/jetbrains/kotlin/ir/IrDiagnosticReporter.kt b/compiler/ir/ir.tree/src/org/jetbrains/kotlin/ir/IrDiagnosticReporter.kt
new file mode 100644
index 00000000000..2d77b1229c5
--- /dev/null
+++ b/compiler/ir/ir.tree/src/org/jetbrains/kotlin/ir/IrDiagnosticReporter.kt
@@ -0,0 +1,18 @@
+/*
+ * Copyright 2010-2023 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
+
+import org.jetbrains.kotlin.config.LanguageVersionSettings
+import org.jetbrains.kotlin.diagnostics.KtDiagnosticReporterWithContext.DiagnosticContextImpl
+import org.jetbrains.kotlin.ir.declarations.IrDeclaration
+import org.jetbrains.kotlin.ir.declarations.IrFile
+
+interface IrDiagnosticReporter {
+    val languageVersionSettings: LanguageVersionSettings
+    fun at(irDeclaration: IrDeclaration): DiagnosticContextImpl
+    fun at(irElement: IrElement, containingIrFile: IrFile): DiagnosticContextImpl
+    fun at(irElement: IrElement, containingIrDeclaration: IrDeclaration): DiagnosticContextImpl
+}
\ No newline at end of file
diff --git a/compiler/tests-common-new/tests/org/jetbrains/kotlin/test/backend/ir/IrActualizerAndPluginsFacade.kt b/compiler/tests-common-new/tests/org/jetbrains/kotlin/test/backend/ir/IrActualizerAndPluginsFacade.kt
index 16d3868a4f8..830e7fcbf37 100644
--- a/compiler/tests-common-new/tests/org/jetbrains/kotlin/test/backend/ir/IrActualizerAndPluginsFacade.kt
+++ b/compiler/tests-common-new/tests/org/jetbrains/kotlin/test/backend/ir/IrActualizerAndPluginsFacade.kt
@@ -5,6 +5,7 @@
 
 package org.jetbrains.kotlin.test.backend.ir
 
+import org.jetbrains.kotlin.KtDiagnosticReporterWithImplicitIrBasedContext
 import org.jetbrains.kotlin.backend.common.actualizer.IrActualizer
 import org.jetbrains.kotlin.backend.common.extensions.IrGenerationExtension
 import org.jetbrains.kotlin.backend.jvm.JvmIrTypeSystemContext
@@ -32,9 +33,11 @@ class IrActualizerAndPluginsFacade(
             val result = IrActualizer.actualize(
                 inputArtifact.irModuleFragment,
                 inputArtifact.dependentIrModuleFragments,
-                inputArtifact.diagnosticReporter,
+                KtDiagnosticReporterWithImplicitIrBasedContext(
+                    inputArtifact.diagnosticReporter,
+                    testServices.compilerConfigurationProvider.getCompilerConfiguration(module).languageVersionSettings,
+                ),
                 typeSystemContext,
-                testServices.compilerConfigurationProvider.getCompilerConfiguration(module).languageVersionSettings,
                 inputArtifact.fir2IrComponents!!.symbolTable,
                 inputArtifact.fir2IrComponents!!.fakeOverrideBuilder,
                 useIrFakeOverrideBuilder = CodegenTestDirectives.ENABLE_IR_FAKE_OVERRIDE_GENERATION in module.directives,