Disallow serialization of private and other non-exported functions.

backend.native/compiler/ir/backend.native/src/org/jetbrains/kotlin/backend/konan/descriptors/DescriptorUtils.kt

@@ -22,6 +22,7 @@ import org.jetbrains.kotlin.backend.konan.isRepresentedAs
 import org.jetbrains.kotlin.backend.konan.isValueType
 import org.jetbrains.kotlin.backend.konan.llvm.functionName
 import org.jetbrains.kotlin.backend.konan.llvm.localHash
+import org.jetbrains.kotlin.backend.konan.llvm.isExported
 import org.jetbrains.kotlin.builtins.functions.FunctionClassDescriptor
 import org.jetbrains.kotlin.builtins.getFunctionalClassKind
 import org.jetbrains.kotlin.builtins.isFunctionType
@@ -304,3 +305,6 @@ internal fun DeclarationDescriptor.getMemberScope(): MemberScope {
 internal val FunctionDescriptor.needsInlining: Boolean 
     get() = (this.isInline && !this.isExternal)
 
+internal val FunctionDescriptor.needsSerializedIr: Boolean 
+    get() = (this.needsInlining && this.isExported())
+

backend.native/compiler/ir/backend.native/src/org/jetbrains/kotlin/backend/konan/serialization/KonanDescriptorSerializer.kt

@@ -16,7 +16,7 @@
 
 package org.jetbrains.kotlin.serialization
 
-import org.jetbrains.kotlin.backend.konan.descriptors.needsInlining
+import org.jetbrains.kotlin.backend.konan.descriptors.needsSerializedIr
 import org.jetbrains.kotlin.backend.konan.serialization.IrAwareExtension
 import org.jetbrains.kotlin.backend.konan.util.onlyIf
 import org.jetbrains.kotlin.builtins.KotlinBuiltIns
@@ -228,11 +228,11 @@ class KonanDescriptorSerializer private constructor(
         extension.serializeProperty(descriptor, builder)
 
         if (extension is IrAwareExtension) {
-            descriptor.getter?.onlyIf({needsInlining}) {
+            descriptor.getter?.onlyIf({needsSerializedIr}) {
                 extension.addGetterIR(builder,
                     extension.serializeInlineBody(it, {it -> typeId(it)}))
             }
-            descriptor.setter?.onlyIf({needsInlining}) {
+            descriptor.setter?.onlyIf({needsSerializedIr}) {
                 extension.addSetterIR(builder,
                     extension.serializeInlineBody(it, {it -> typeId(it)}))
             }
@@ -296,7 +296,7 @@ class KonanDescriptorSerializer private constructor(
         extension.serializeFunction(descriptor, builder)
 
         if (extension is IrAwareExtension 
-            && descriptor.needsInlining) {
+            && descriptor.needsSerializedIr) {
             extension.addFunctionIR(builder, 
                 extension.serializeInlineBody(descriptor, {it -> typeId(it)}))
         }

backend.native/compiler/ir/backend.native/src/org/jetbrains/kotlin/backend/konan/serialization/SerializerVisitor.kt

@@ -40,7 +40,7 @@ import org.jetbrains.kotlin.backend.common.validateIrFunction
 internal class DeserializerDriver(val context: Context) {
 
     internal fun deserializeInlineBody(descriptor: FunctionDescriptor): IrDeclaration? {
-        if (!descriptor.needsInlining) return null
+        if (!descriptor.needsSerializedIr) return null
         if (!descriptor.isDeserializableCallable) return null
 
         var deserializedIr: IrDeclaration? = null