Serialize and deserialize const val's properly for K2 klib

#KT-57312 Fixed

compiler/cli/cli-js/src/org/jetbrains/kotlin/cli/js/klib/compilerPipeline.kt

@@ -24,9 +24,7 @@ import org.jetbrains.kotlin.diagnostics.impl.PendingDiagnosticsCollectorWithSupp
 import org.jetbrains.kotlin.fir.BinaryModuleData
 import org.jetbrains.kotlin.fir.DependencyListForCliModule
 import org.jetbrains.kotlin.fir.FirSession
-import org.jetbrains.kotlin.fir.backend.Fir2IrExtensions
-import org.jetbrains.kotlin.fir.backend.Fir2IrVisibilityConverter
-import org.jetbrains.kotlin.fir.backend.extractFirDeclarations
+import org.jetbrains.kotlin.fir.backend.*
 import org.jetbrains.kotlin.fir.backend.jvm.FirJvmKotlinMangler
 import org.jetbrains.kotlin.fir.declarations.FirFile
 import org.jetbrains.kotlin.fir.descriptors.FirModuleDescriptor
@@ -192,7 +190,10 @@ fun serializeFirKlib(
             session,
             scopeSession,
             actualizedExpectDeclarations,
-            FirKLibSerializerExtension(session, metadataVersion, FirElementAwareSerializableStringTable()),
+            FirKLibSerializerExtension(
+                session, metadataVersion, FirElementAwareSerializableStringTable(),
+                ConstValueProviderImpl(fir2IrActualizedResult.components),
+            ),
             moduleStructure.compilerConfiguration.languageVersionSettings,
         )
     }

compiler/cli/src/org/jetbrains/kotlin/cli/metadata/FirMetadataSerializer.kt

@@ -39,7 +39,7 @@ import org.jetbrains.kotlin.fir.pipeline.resolveAndCheckFir
 import org.jetbrains.kotlin.fir.serialization.FirElementAwareSerializableStringTable
 import org.jetbrains.kotlin.fir.serialization.FirKLibSerializerExtension
 import org.jetbrains.kotlin.fir.serialization.serializeSingleFirFile
-import org.jetbrains.kotlin.library.*
+import org.jetbrains.kotlin.library.SerializedMetadata
 import org.jetbrains.kotlin.library.metadata.KlibMetadataHeaderFlags
 import org.jetbrains.kotlin.library.metadata.KlibMetadataProtoBuf
 import org.jetbrains.kotlin.modules.TargetId
@@ -167,8 +167,10 @@ internal class FirMetadataSerializer(
                     session,
                     scopeSession,
                     actualizedExpectDeclarations = null,
-                    FirKLibSerializerExtension(session, metadataVersion, FirElementAwareSerializableStringTable()),
-                    languageVersionSettings
+                    FirKLibSerializerExtension(
+                        session, metadataVersion, FirElementAwareSerializableStringTable(), constValueProvider = null
+                    ),
+                    languageVersionSettings,
                 )
                 fragments.getOrPut(firFile.packageFqName.asString()) { mutableListOf() }.add(packageFragment.toByteArray())
             }

compiler/fir/fir-serialization/src/org/jetbrains/kotlin/fir/serialization/FirSerializerExtension.kt

@@ -8,8 +8,10 @@ package org.jetbrains.kotlin.fir.serialization
 import org.jetbrains.kotlin.fir.FirSession
 import org.jetbrains.kotlin.fir.declarations.*
 import org.jetbrains.kotlin.fir.expressions.FirAnnotation
+import org.jetbrains.kotlin.fir.serialization.constant.ConstValueProvider
 import org.jetbrains.kotlin.fir.types.ConeErrorType
 import org.jetbrains.kotlin.fir.types.ConeFlexibleType
+import org.jetbrains.kotlin.library.metadata.KlibMetadataProtoBuf
 import org.jetbrains.kotlin.metadata.ProtoBuf
 import org.jetbrains.kotlin.metadata.deserialization.BinaryVersion
 import org.jetbrains.kotlin.metadata.serialization.MutableVersionRequirementTable
@@ -24,6 +26,8 @@ abstract class FirSerializerExtension {
 
     val annotationSerializer by lazy { FirAnnotationSerializer(session, stringTable) }
 
+    abstract val constValueProvider: ConstValueProvider?
+
     open fun shouldUseTypeTable(): Boolean = false
     open fun shouldUseNormalizedVisibility(): Boolean = false
 
@@ -83,6 +87,11 @@ abstract class FirSerializerExtension {
         throw IllegalStateException("Cannot serialize error type: $type")
     }
 
+    protected fun serializeConstant(property: FirProperty, proto: ProtoBuf.Property.Builder) {
+        val constProtoBuf = constValueProvider?.buildValueProtoBufIfPropertyIsConst(property, annotationSerializer) ?: return
+        proto.setExtension(KlibMetadataProtoBuf.compileTimeValue, constProtoBuf)
+    }
+
     open val customClassMembersProducer: ClassMembersProducer?
         get() = null
 

compiler/fir/fir-serialization/src/org/jetbrains/kotlin/fir/serialization/constant/ConstValueProvider.kt

@@ -0,0 +1,32 @@
+/*
+ * 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.fir.serialization.constant
+
+import org.jetbrains.kotlin.fir.FirSession
+import org.jetbrains.kotlin.fir.declarations.FirProperty
+import org.jetbrains.kotlin.fir.expressions.FirConstExpression
+import org.jetbrains.kotlin.fir.serialization.FirAnnotationSerializer
+import org.jetbrains.kotlin.metadata.ProtoBuf
+
+abstract class ConstValueProvider {
+    abstract val session: FirSession
+
+    abstract fun getConstantValueForProperty(firProperty: FirProperty): FirConstExpression<*>?
+
+    fun buildValueProtoBufIfPropertyIsConst(
+        firProperty: FirProperty, annotationSerializer: FirAnnotationSerializer
+    ): ProtoBuf.Annotation.Argument.Value? {
+        return getConstantValueForProperty(firProperty).toProtoBuf(annotationSerializer)
+    }
+
+    private fun FirConstExpression<*>?.toProtoBuf(
+        annotationSerializer: FirAnnotationSerializer
+    ): ProtoBuf.Annotation.Argument.Value? {
+        val constantValue = this?.toConstantValue(session) ?: return null
+        return annotationSerializer.valueProto(constantValue).build()
+    }
+}
+

compiler/fir/fir-serialization/src/org/jetbrains/kotlin/fir/serialization/constant/FirToConstantValueTransformer.kt

@@ -49,11 +49,11 @@ internal object FirToConstantValueTransformer : FirDefaultVisitor<ConstantValue<
             ConstantValueKind.UnsignedShort -> UShortValue((value as Number).toShort())
             ConstantValueKind.Int -> IntValue((value as Number).toInt())
             ConstantValueKind.UnsignedInt -> UIntValue((value as Number).toInt())
-            ConstantValueKind.Long -> LongValue(value as Long)
-            ConstantValueKind.UnsignedLong -> ULongValue(value as Long)
+            ConstantValueKind.Long -> LongValue((value as Number).toLong())
+            ConstantValueKind.UnsignedLong -> ULongValue((value as Number).toLong())
             ConstantValueKind.String -> StringValue(value as String)
-            ConstantValueKind.Float -> FloatValue(value as Float)
-            ConstantValueKind.Double -> DoubleValue(value as Double)
+            ConstantValueKind.Float -> FloatValue((value as Number).toFloat())
+            ConstantValueKind.Double -> DoubleValue((value as Number).toDouble())
             ConstantValueKind.Null -> NullValue
             else -> null
         }
@@ -99,24 +99,22 @@ internal object FirToConstantValueTransformer : FirDefaultVisitor<ConstantValue<
             symbol is FirConstructorSymbol -> {
                 val constructorCall = qualifiedAccessExpression as FirFunctionCall
                 val constructedClassSymbol = symbol.containingClassLookupTag()?.toFirRegularClassSymbol(data) ?: return null
-                return if (constructedClassSymbol.classKind == ClassKind.ANNOTATION_CLASS) {
-                    AnnotationValue(
-                        buildAnnotationCall {
-                            argumentMapping = buildAnnotationArgumentMapping {
-                                constructorCall.resolvedArgumentMapping?.forEach { (firExpression, firValueParameter) ->
-                                    mapping[firValueParameter.name] = firExpression
-                                }
-                            }
-                            annotationTypeRef = qualifiedAccessExpression.typeRef
-                            calleeReference = buildSimpleNamedReference {
-                                source = qualifiedAccessExpression.source
-                                name = qualifiedAccessExpression.calleeReference.name
+                if (constructedClassSymbol.classKind != ClassKind.ANNOTATION_CLASS) return null
+
+                return AnnotationValue(
+                    buildAnnotationCall {
+                        argumentMapping = buildAnnotationArgumentMapping {
+                            constructorCall.resolvedArgumentMapping?.forEach { (firExpression, firValueParameter) ->
+                                mapping[firValueParameter.name] = firExpression
                             }
                         }
-                    )
-                } else {
-                    null
-                }
+                        annotationTypeRef = qualifiedAccessExpression.typeRef
+                        calleeReference = buildSimpleNamedReference {
+                            source = qualifiedAccessExpression.source
+                            name = qualifiedAccessExpression.calleeReference.name
+                        }
+                    }
+                )
             }
 
             symbol.callableId.packageName.asString() == "kotlin" -> {

compiler/fir/fir-serialization/src/org/jetbrains/kotlin/fir/serialization/firKlibSerialization.kt

@@ -13,8 +13,10 @@ import org.jetbrains.kotlin.fir.declarations.*
 import org.jetbrains.kotlin.fir.declarations.utils.classId
 import org.jetbrains.kotlin.fir.packageFqName
 import org.jetbrains.kotlin.fir.resolve.ScopeSession
+import org.jetbrains.kotlin.fir.serialization.constant.ConstValueProvider
 import org.jetbrains.kotlin.metadata.ProtoBuf
 import org.jetbrains.kotlin.metadata.deserialization.BinaryVersion
+import org.jetbrains.kotlin.metadata.serialization.MutableVersionRequirementTable
 import org.jetbrains.kotlin.name.ClassId
 import org.jetbrains.kotlin.serialization.SerializableStringTable
 
@@ -66,8 +68,19 @@ fun serializeSingleFirFile(
 open class FirKLibSerializerExtension(
     override val session: FirSession,
     override val metadataVersion: BinaryVersion,
-    override val stringTable: FirElementAwareSerializableStringTable
-) : FirSerializerExtension()
+    override val stringTable: FirElementAwareSerializableStringTable,
+    override val constValueProvider: ConstValueProvider?
+) : FirSerializerExtension() {
+    override fun serializeProperty(
+        property: FirProperty,
+        proto: ProtoBuf.Property.Builder,
+        versionRequirementTable: MutableVersionRequirementTable?,
+        childSerializer: FirElementSerializer
+    ) {
+        super.serializeProperty(property, proto, versionRequirementTable, childSerializer)
+        serializeConstant(property, proto)
+    }
+}
 
 class FirElementAwareSerializableStringTable() : FirElementAwareStringTable, SerializableStringTable() {
     override fun getLocalClassIdReplacement(firClass: FirClass): ClassId? = ClassId.topLevel(StandardNames.FqNames.any.toSafe())

compiler/fir/fir2ir/build.gradle.kts

@@ -16,6 +16,7 @@ dependencies {
     compileOnly(project(":compiler:ir.tree"))
     compileOnly(project(":compiler:ir.backend.common"))
     compileOnly(project(":compiler:ir.serialization.common"))
+    compileOnly(project(":compiler:fir:fir-serialization"))
 
     compileOnly(intellijCore())
 
@@ -26,7 +27,6 @@ dependencies {
     testApi(projectTests(":compiler:tests-compiler-utils"))
     testApi(projectTests(":compiler:tests-common-new"))
     testApi(projectTests(":compiler:fir:analysis-tests"))
-    testApi(project(":compiler:fir:fir-serialization"))
 
     testApiJUnit5()
 

compiler/fir/fir2ir/jvm-backend/src/org/jetbrains/kotlin/fir/backend/jvm/FirJvmSerializerExtension.kt

@@ -13,6 +13,7 @@ import org.jetbrains.kotlin.config.JvmDefaultMode
 import org.jetbrains.kotlin.descriptors.ClassKind
 import org.jetbrains.kotlin.descriptors.Visibilities
 import org.jetbrains.kotlin.fir.FirSession
+import org.jetbrains.kotlin.fir.backend.ConstValueProviderImpl
 import org.jetbrains.kotlin.fir.backend.Fir2IrComponents
 import org.jetbrains.kotlin.fir.backend.FirMetadataSource
 import org.jetbrains.kotlin.fir.declarations.*
@@ -23,9 +24,8 @@ import org.jetbrains.kotlin.fir.render
 import org.jetbrains.kotlin.fir.resolve.ScopeSession
 import org.jetbrains.kotlin.fir.resolve.providers.firProvider
 import org.jetbrains.kotlin.fir.resolve.toFirRegularClassSymbol
-import org.jetbrains.kotlin.fir.serialization.FirElementAwareStringTable
-import org.jetbrains.kotlin.fir.serialization.FirElementSerializer
-import org.jetbrains.kotlin.fir.serialization.FirSerializerExtension
+import org.jetbrains.kotlin.fir.serialization.*
+import org.jetbrains.kotlin.fir.serialization.constant.ConstValueProvider
 import org.jetbrains.kotlin.fir.types.*
 import org.jetbrains.kotlin.ir.declarations.MetadataSource
 import org.jetbrains.kotlin.load.kotlin.NON_EXISTENT_CLASS_NAME
@@ -59,7 +59,8 @@ class FirJvmSerializerExtension(
     private val unifiedNullChecks: Boolean,
     override val metadataVersion: BinaryVersion,
     private val jvmDefaultMode: JvmDefaultMode,
-    override val stringTable: FirElementAwareStringTable
+    override val stringTable: FirElementAwareStringTable,
+    override val constValueProvider: ConstValueProvider?
 ) : FirSerializerExtension() {
 
     constructor(
@@ -75,7 +76,7 @@ class FirJvmSerializerExtension(
         session, bindings, metadata, localDelegatedProperties, approximator, components.scopeSession,
         state.globalSerializationBindings, state.useTypeTableInSerializer, state.moduleName, state.classBuilderMode,
         state.isParamAssertionsDisabled, state.unifiedNullChecks, state.metadataVersion, state.jvmDefaultMode,
-        FirJvmElementAwareStringTable(typeMapper, components)
+        FirJvmElementAwareStringTable(typeMapper, components), ConstValueProviderImpl(components),
     )
 
     override fun shouldUseTypeTable(): Boolean = useTypeTable

compiler/fir/fir2ir/jvm-backend/src/org/jetbrains/kotlin/fir/backend/jvm/FirMetadataSerializer.kt

@@ -26,11 +26,13 @@ import org.jetbrains.kotlin.fir.resolve.toFirRegularClass
 import org.jetbrains.kotlin.fir.serialization.FirElementAwareStringTable
 import org.jetbrains.kotlin.fir.serialization.FirElementSerializer
 import org.jetbrains.kotlin.fir.serialization.TypeApproximatorForMetadataSerializer
+import org.jetbrains.kotlin.fir.serialization.constant.*
 import org.jetbrains.kotlin.fir.symbols.impl.*
 import org.jetbrains.kotlin.fir.types.*
 import org.jetbrains.kotlin.ir.declarations.IrClass
 import org.jetbrains.kotlin.ir.declarations.IrDeclarationOrigin
 import org.jetbrains.kotlin.ir.declarations.MetadataSource
+import org.jetbrains.kotlin.ir.types.*
 import org.jetbrains.kotlin.metadata.jvm.serialization.JvmStringTable
 import org.jetbrains.kotlin.modules.TargetId
 import org.jetbrains.kotlin.name.ClassId
@@ -65,7 +67,7 @@ fun makeFirMetadataSerializerForIrClass(
         approximator,
         makeElementSerializer(
             irClass.metadata, components.session, components.scopeSession, firSerializerExtension, approximator, parent,
-            context.state.configuration.languageVersionSettings
+            context.state.configuration.languageVersionSettings,
         ),
         irActualizationResult
     )
@@ -102,7 +104,8 @@ fun makeLocalFirMetadataSerializerForMetadataSource(
                 !configuration.getBoolean(JVMConfigurationKeys.NO_UNIFIED_NULL_CHECKS),
         configuration.metadataVersion(session.languageVersionSettings.languageVersion),
         session.languageVersionSettings.getFlag(JvmAnalysisFlags.jvmDefaultMode),
-        stringTable
+        stringTable,
+        constValueProvider = null,
     )
     return FirMetadataSerializer(
         globalSerializationBindings,

compiler/fir/fir2ir/src/org/jetbrains/kotlin/fir/backend/ConstValueProviderImpl.kt

@@ -0,0 +1,64 @@
+/*
+ * 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.fir.backend
+
+import org.jetbrains.kotlin.builtins.PrimitiveType
+import org.jetbrains.kotlin.builtins.UnsignedType
+import org.jetbrains.kotlin.fir.FirSession
+import org.jetbrains.kotlin.fir.declarations.FirProperty
+import org.jetbrains.kotlin.fir.expressions.*
+import org.jetbrains.kotlin.fir.expressions.builder.buildConstExpression
+import org.jetbrains.kotlin.fir.serialization.constant.ConstValueProvider
+import org.jetbrains.kotlin.ir.declarations.IrProperty
+import org.jetbrains.kotlin.ir.expressions.IrConst
+import org.jetbrains.kotlin.ir.expressions.IrConstKind
+import org.jetbrains.kotlin.ir.types.*
+import org.jetbrains.kotlin.types.ConstantValueKind
+
+class ConstValueProviderImpl(
+    private val components: Fir2IrComponents,
+) : ConstValueProvider() {
+    override val session: FirSession = components.session
+
+    override fun getConstantValueForProperty(firProperty: FirProperty): FirConstExpression<*>? {
+        val irProperty: IrProperty = components.declarationStorage.getCachedIrProperty(firProperty) ?: return null
+        if (!irProperty.isConst) return null
+        val irConst = irProperty.backingField?.initializer?.expression as? IrConst<*> ?: return null
+        return irConst.toFirConst()
+    }
+
+    private fun IrConst<*>.getConstantKind(): ConstantValueKind<*>? {
+        if (this.kind == IrConstKind.Null) return ConstantValueKind.Null
+
+        val constType = this.type.makeNotNull().removeAnnotations()
+        return when (this.type.getPrimitiveType()) {
+            PrimitiveType.BOOLEAN -> ConstantValueKind.Boolean
+            PrimitiveType.CHAR -> ConstantValueKind.Char
+            PrimitiveType.BYTE -> ConstantValueKind.Byte
+            PrimitiveType.SHORT -> ConstantValueKind.Short
+            PrimitiveType.INT -> ConstantValueKind.Int
+            PrimitiveType.LONG -> ConstantValueKind.Long
+            PrimitiveType.FLOAT -> ConstantValueKind.Float
+            PrimitiveType.DOUBLE -> ConstantValueKind.Double
+            null -> when (constType.getUnsignedType()) {
+                UnsignedType.UBYTE -> ConstantValueKind.UnsignedByte
+                UnsignedType.USHORT -> ConstantValueKind.UnsignedShort
+                UnsignedType.UINT -> ConstantValueKind.UnsignedInt
+                UnsignedType.ULONG -> ConstantValueKind.UnsignedLong
+                null -> when {
+                    constType.isString() -> ConstantValueKind.String
+                    else -> null
+                }
+            }
+        }
+    }
+
+    private fun <T> IrConst<T>.toFirConst(): FirConstExpression<T>? {
+        @Suppress("UNCHECKED_CAST")
+        val kind = getConstantKind() as? ConstantValueKind<T> ?: return null
+        return buildConstExpression(null, kind, this.value)
+    }
+}

compiler/testData/codegen/box/constants/constValFromAnotherModuleInConsVal.kt

@@ -1,4 +1,3 @@
-// IGNORE_BACKEND_K2: JS_IR, NATIVE
 // MODULE: lib
 // FILE: Typography.kt
 object Typography {

compiler/testData/codegen/box/innerNested/considerPropertyInitValueFromNestedClass.kt

@@ -1,5 +1,4 @@
-// IGNORE_BACKEND_K2: JS_IR, NATIVE
-// ISSUE: KT-52057
+// IGNORE_BACKEND_K2: NATIVE
 // MODULE: lib
 // FILE: Class.kt
 

compiler/testData/codegen/box/properties/const/intermoduleInlineConst.kt

@@ -1,5 +1,3 @@
-// IGNORE_BACKEND_K2: JS_IR, NATIVE
-
 // MODULE: lib1
 // FILE: lib1.kt
 object L1 {

compiler/testData/codegen/box/properties/initializerOfConstValWithConst.kt

@@ -1,5 +1,3 @@
-// IGNORE_BACKEND_K2: NATIVE, JS_IR
-
 // MODULE: lib
 // FILE: lib.kt
 const val four = 4

compiler/testData/codegen/box/properties/initializerOfConstValWithConstExpr.kt

@@ -1,5 +1,3 @@
-// IGNORE_BACKEND_K2: NATIVE, JS_IR
-
 // MODULE: lib
 // FILE: lib.kt
 const val four = 2 + 2

compiler/tests-common-new/tests/org/jetbrains/kotlin/test/frontend/fir/Fir2IrJsResultsConverter.kt

@@ -123,7 +123,9 @@ class Fir2IrJsResultsConverter(
                 components.session,
                 components.scopeSession,
                 actualizedExpectDeclarations,
-                FirKLibSerializerExtension(components.session, metadataVersion, FirElementAwareSerializableStringTable()),
+                FirKLibSerializerExtension(
+                    components.session, metadataVersion, FirElementAwareSerializableStringTable(), ConstValueProviderImpl(components),
+                ),
                 configuration.languageVersionSettings,
             )
         }

kotlin-native/backend.native/compiler/ir/backend.native/src/org/jetbrains/kotlin/backend/konan/FirSerializer.kt

@@ -14,14 +14,13 @@ import org.jetbrains.kotlin.config.languageVersionSettings
 import org.jetbrains.kotlin.descriptors.DeclarationDescriptor
 import org.jetbrains.kotlin.descriptors.annotations.AnnotationUseSiteTarget
 import org.jetbrains.kotlin.fir.FirSession
+import org.jetbrains.kotlin.fir.backend.ConstValueProviderImpl
 import org.jetbrains.kotlin.fir.backend.extractFirDeclarations
 import org.jetbrains.kotlin.fir.declarations.*
 import org.jetbrains.kotlin.fir.expressions.FirAnnotation
 import org.jetbrains.kotlin.fir.resolve.ScopeSession
-import org.jetbrains.kotlin.fir.serialization.FirElementAwareSerializableStringTable
-import org.jetbrains.kotlin.fir.serialization.FirElementSerializer
-import org.jetbrains.kotlin.fir.serialization.FirKLibSerializerExtension
-import org.jetbrains.kotlin.fir.serialization.serializeSingleFirFile
+import org.jetbrains.kotlin.fir.serialization.*
+import org.jetbrains.kotlin.fir.serialization.constant.ConstValueProvider
 import org.jetbrains.kotlin.ir.declarations.IrModuleFragment
 import org.jetbrains.kotlin.ir.symbols.IrSymbol
 import org.jetbrains.kotlin.ir.util.IrMessageLogger
@@ -70,7 +69,9 @@ internal fun PhaseContext.firSerializer(
                 session,
                 scopeSession,
                 actualizedFirDeclarations,
-                FirNativeKLibSerializerExtension(session, metadataVersion, FirElementAwareSerializableStringTable()),
+                FirNativeKLibSerializerExtension(
+                        session, metadataVersion, FirElementAwareSerializableStringTable(), ConstValueProviderImpl(input.components),
+                ),
                 configuration.languageVersionSettings,
         )
     }
@@ -137,8 +138,9 @@ internal fun PhaseContext.serializeNativeModule(
 class FirNativeKLibSerializerExtension(
         override val session: FirSession,
         override val metadataVersion: BinaryVersion,
-        override val stringTable: FirElementAwareSerializableStringTable
-) : FirKLibSerializerExtension(session, metadataVersion, stringTable) {
+        override val stringTable: FirElementAwareSerializableStringTable,
+        override val constValueProvider: ConstValueProvider?
+) : FirKLibSerializerExtension(session, metadataVersion, stringTable, constValueProvider) {
     private fun declarationFileId(declaration: FirMemberDeclaration): Int? {
         val fileName = declaration.source.psi?.containingFile?.name ?: return null
         return stringTable.getStringIndex(fileName)
@@ -194,6 +196,9 @@ class FirNativeKLibSerializerExtension(
         property.setter?.nonSourceAnnotations(session)?.forEach {
             proto.addExtension(KlibMetadataProtoBuf.propertySetterAnnotation, annotationSerializer.serializeAnnotation(it))
         }
+
+        serializeConstant(property, proto)
+
         // TODO KT-56090 Serialize KDocString
         super.serializeProperty(property, proto, versionRequirementTable, childSerializer)
     }
@@ -242,5 +247,4 @@ class FirNativeKLibSerializerExtension(
         }
         super.serializeTypeParameter(typeParameter, proto)
     }
-
 }