diff --git a/compiler/backend/src/org/jetbrains/kotlin/codegen/state/BuilderFactoryForDuplicateSignatureDiagnostics.kt b/compiler/backend/src/org/jetbrains/kotlin/codegen/state/BuilderFactoryForDuplicateSignatureDiagnostics.kt
index 3f630e81f32..f4500652272 100644
--- a/compiler/backend/src/org/jetbrains/kotlin/codegen/state/BuilderFactoryForDuplicateSignatureDiagnostics.kt
+++ b/compiler/backend/src/org/jetbrains/kotlin/codegen/state/BuilderFactoryForDuplicateSignatureDiagnostics.kt
@@ -23,6 +23,7 @@ import org.jetbrains.kotlin.resolve.descriptorUtil.overriddenTreeUniqueAsSequenc
 import org.jetbrains.kotlin.resolve.jvm.diagnostics.*
 import org.jetbrains.kotlin.resolve.scopes.DescriptorKindFilter
 import org.jetbrains.kotlin.utils.addIfNotNull
+import org.jetbrains.org.objectweb.asm.commons.Method
 import java.util.*
 
 private val EXTERNAL_SOURCES_KINDS = arrayOf(
@@ -50,14 +51,15 @@ class BuilderFactoryForDuplicateSignatureDiagnostics(
     moduleName: String,
     languageVersionSettings: LanguageVersionSettings,
     shouldGenerate: (JvmDeclarationOrigin) -> Boolean,
-    isIrBackend: Boolean
+    mapAsmMethod: ((FunctionDescriptor) -> Method)?
 ) : SignatureCollectingClassBuilderFactory(builderFactory, shouldGenerate) {
 
-    // Avoid errors when some classes are not loaded for some reason
-    private val typeMapper = KotlinTypeMapper(
-        bindingContext, ClassBuilderMode.LIGHT_CLASSES, moduleName, languageVersionSettings,
-        isIrBackend = isIrBackend
-    )
+    private val mapAsmMethod = mapAsmMethod
+        ?: KotlinTypeMapper(
+            // Avoid errors when some classes are not loaded for some reason
+            bindingContext, ClassBuilderMode.LIGHT_CLASSES, moduleName, languageVersionSettings, isIrBackend = false
+        )::mapAsmMethod
+
     private val reportDiagnosticsTasks = ArrayList<() -> Unit>()
 
     fun reportDiagnostics() {
@@ -240,7 +242,7 @@ class BuilderFactoryForDuplicateSignatureDiagnostics(
     }
 
     private fun FunctionDescriptor.asRawSignature() =
-        with(typeMapper.mapAsmMethod(this)) {
+        with(mapAsmMethod(this)) {
             RawSignature(name, descriptor, MemberKind.METHOD)
         }
 
diff --git a/compiler/backend/src/org/jetbrains/kotlin/codegen/state/GenerationState.kt b/compiler/backend/src/org/jetbrains/kotlin/codegen/state/GenerationState.kt
index 35a6036e078..ae0c3aca0e8 100644
--- a/compiler/backend/src/org/jetbrains/kotlin/codegen/state/GenerationState.kt
+++ b/compiler/backend/src/org/jetbrains/kotlin/codegen/state/GenerationState.kt
@@ -20,6 +20,7 @@ import org.jetbrains.kotlin.codegen.intrinsics.IntrinsicMethods
 import org.jetbrains.kotlin.codegen.optimization.OptimizationClassBuilderFactory
 import org.jetbrains.kotlin.codegen.serialization.JvmSerializationBindings
 import org.jetbrains.kotlin.config.*
+import org.jetbrains.kotlin.descriptors.FunctionDescriptor
 import org.jetbrains.kotlin.descriptors.ModuleDescriptor
 import org.jetbrains.kotlin.descriptors.ScriptDescriptor
 import org.jetbrains.kotlin.diagnostics.Diagnostic
@@ -44,6 +45,7 @@ import org.jetbrains.kotlin.resolve.jvm.diagnostics.JvmDeclarationOriginKind.*
 import org.jetbrains.kotlin.serialization.deserialization.DeserializationConfiguration
 import org.jetbrains.kotlin.storage.LockBasedStorageManager
 import org.jetbrains.kotlin.types.KotlinType
+import org.jetbrains.org.objectweb.asm.commons.Method
 import java.io.File
 
 class GenerationState private constructor(
@@ -258,6 +260,7 @@ class GenerationState private constructor(
     val metadataVersion = configuration.get(CommonConfigurationKeys.METADATA_VERSION) ?: JvmMetadataVersion.INSTANCE
 
     val globalSerializationBindings = JvmSerializationBindings()
+    lateinit var irBasedMapAsmMethod: (FunctionDescriptor) -> Method
 
     init {
         this.interceptedBuilderFactory = builderFactory
@@ -272,7 +275,7 @@ class GenerationState private constructor(
                     BuilderFactoryForDuplicateSignatureDiagnostics(
                         it, this.bindingContext, diagnostics, this.moduleName, this.languageVersionSettings,
                         shouldGenerate = { !shouldOnlyCollectSignatures(it) },
-                        isIrBackend = isIrBackend
+                        mapAsmMethod = if (isIrBackend) { descriptor: FunctionDescriptor -> irBasedMapAsmMethod(descriptor) } else null
                     ).apply { duplicateSignatureFactory = this }
                 },
                 { BuilderFactoryForDuplicateClassNameDiagnostics(it, diagnostics) },
diff --git a/compiler/ir/backend.jvm/src/org/jetbrains/kotlin/backend/jvm/JvmBackendFacade.kt b/compiler/ir/backend.jvm/src/org/jetbrains/kotlin/backend/jvm/JvmBackendFacade.kt
index 64cc4639c50..47daf4a2329 100644
--- a/compiler/ir/backend.jvm/src/org/jetbrains/kotlin/backend/jvm/JvmBackendFacade.kt
+++ b/compiler/ir/backend.jvm/src/org/jetbrains/kotlin/backend/jvm/JvmBackendFacade.kt
@@ -65,6 +65,9 @@ object JvmBackendFacade {
         val context = JvmBackendContext(
             state, sourceManager, irModuleFragment.irBuiltins, irModuleFragment, symbolTable, phaseConfig, firMode
         )
+        state.irBasedMapAsmMethod = { descriptor ->
+            context.methodSignatureMapper.mapAsmMethod(context.referenceFunction(descriptor).owner)
+        }
         //TODO
         ExternalDependenciesGenerator(
             irModuleFragment.descriptor,