diff --git a/compiler/ir/ir.tree/src/org/jetbrains/kotlin/ir/symbols/IrSymbol.kt b/compiler/ir/ir.tree/src/org/jetbrains/kotlin/ir/symbols/IrSymbol.kt
index 796810deda9..4889c5ddf25 100644
--- a/compiler/ir/ir.tree/src/org/jetbrains/kotlin/ir/symbols/IrSymbol.kt
+++ b/compiler/ir/ir.tree/src/org/jetbrains/kotlin/ir/symbols/IrSymbol.kt
@@ -22,6 +22,7 @@ import org.jetbrains.kotlin.ir.declarations.*
 interface IrSymbol {
     val owner : IrSymbolOwner
     val descriptor: DeclarationDescriptor
+    val isBound: Boolean
 }
 
 interface IrBindableSymbol<out D : DeclarationDescriptor, B : IrSymbolOwner> : IrSymbol {
diff --git a/compiler/ir/ir.tree/src/org/jetbrains/kotlin/ir/symbols/impl/IrSymbolBase.kt b/compiler/ir/ir.tree/src/org/jetbrains/kotlin/ir/symbols/impl/IrSymbolBase.kt
index bb6b800875f..4b2ba7a3f41 100644
--- a/compiler/ir/ir.tree/src/org/jetbrains/kotlin/ir/symbols/impl/IrSymbolBase.kt
+++ b/compiler/ir/ir.tree/src/org/jetbrains/kotlin/ir/symbols/impl/IrSymbolBase.kt
@@ -34,6 +34,9 @@ abstract class IrBindableSymbolBase<out D : DeclarationDescriptor, B : IrSymbolO
         else
             throw IllegalStateException("Symbol for $descriptor is already bound")
     }
+
+    override val isBound: Boolean
+        get() = _owner != null
 }
 
 class IrFileSymbolImpl(descriptor: PackageFragmentDescriptor) :