diff --git a/kotlin-native/backend.native/compiler/ir/backend.native/src/org/jetbrains/kotlin/backend/konan/lower/matchers/IrCallMatcher.kt b/kotlin-native/backend.native/compiler/ir/backend.native/src/org/jetbrains/kotlin/backend/konan/lower/matchers/IrCallMatcher.kt
deleted file mode 100644
index fd72223ee9c..00000000000
--- a/kotlin-native/backend.native/compiler/ir/backend.native/src/org/jetbrains/kotlin/backend/konan/lower/matchers/IrCallMatcher.kt
+++ /dev/null
@@ -1,66 +0,0 @@
-package org.jetbrains.kotlin.backend.konan.lower.matchers
-
-import org.jetbrains.kotlin.ir.expressions.IrCall
-import org.jetbrains.kotlin.ir.expressions.IrExpression
-import org.jetbrains.kotlin.ir.expressions.IrStatementOrigin
-
-
-internal interface IrCallMatcher : (IrCall) -> Boolean
-
-/**
- * IrCallMatcher that puts restrictions only on its callee.
- */
-internal class SimpleCalleeMatcher(
-        restrictions: IrFunctionMatcherContainer.() -> Unit
-) : IrCallMatcher {
-
-    private val calleeRestriction: IrFunctionMatcher
-            = createIrFunctionRestrictions(restrictions)
-
-    override fun invoke(call: IrCall) = calleeRestriction(call.symbol.owner)
-}
-
-internal class IrCallExtensionReceiverMatcher(
-        val restriction: (IrExpression?) -> Boolean
-) : IrCallMatcher {
-    override fun invoke(call: IrCall) = restriction(call.extensionReceiver)
-}
-
-internal class IrCallDispatchReceiverMatcher(
-        val restriction: (IrExpression?) -> Boolean
-) : IrCallMatcher {
-    override fun invoke(call: IrCall) = restriction(call.dispatchReceiver)
-}
-
-internal class IrCallOriginMatcher(
-        val restriction: (IrStatementOrigin?) -> Boolean
-) : IrCallMatcher {
-    override fun invoke(call: IrCall) = restriction(call.origin)
-}
-
-internal open class IrCallMatcherContainer : IrCallMatcher {
-
-    private val matchers = mutableListOf<IrCallMatcher>()
-
-    fun add(matcher: IrCallMatcher) {
-        matchers += matcher
-    }
-
-    fun extensionReceiver(restriction: (IrExpression?) -> Boolean) =
-            add(IrCallExtensionReceiverMatcher(restriction))
-
-    fun origin(restriction: (IrStatementOrigin?) -> Boolean) =
-            add(IrCallOriginMatcher(restriction))
-
-    fun callee(restrictions: IrFunctionMatcherContainer.() -> Unit) {
-        add(SimpleCalleeMatcher(restrictions))
-    }
-
-    fun dispatchReceiver(restriction: (IrExpression?) -> Boolean) =
-            add(IrCallDispatchReceiverMatcher(restriction))
-
-    override fun invoke(call: IrCall) = matchers.all { it(call) }
-}
-
-internal fun createIrCallMatcher(restrictions: IrCallMatcherContainer.() -> Unit) =
-        IrCallMatcherContainer().apply(restrictions)
\ No newline at end of file
diff --git a/kotlin-native/backend.native/compiler/ir/backend.native/src/org/jetbrains/kotlin/backend/konan/lower/matchers/IrFunctionMatcher.kt b/kotlin-native/backend.native/compiler/ir/backend.native/src/org/jetbrains/kotlin/backend/konan/lower/matchers/IrFunctionMatcher.kt
deleted file mode 100644
index 764feeb3332..00000000000
--- a/kotlin-native/backend.native/compiler/ir/backend.native/src/org/jetbrains/kotlin/backend/konan/lower/matchers/IrFunctionMatcher.kt
+++ /dev/null
@@ -1,96 +0,0 @@
-package org.jetbrains.kotlin.backend.konan.lower.matchers
-
-import org.jetbrains.kotlin.ir.declarations.IrFunction
-import org.jetbrains.kotlin.ir.declarations.IrValueParameter
-import org.jetbrains.kotlin.ir.symbols.IrClassSymbol
-import org.jetbrains.kotlin.ir.types.classifierOrNull
-import org.jetbrains.kotlin.ir.util.fqNameForIrSerialization
-import org.jetbrains.kotlin.name.FqName
-
-internal interface IrFunctionMatcher : (IrFunction) -> Boolean
-
-internal class ParameterMatcher(
-        val index: Int,
-        val restriction: (IrValueParameter) -> Boolean
-) : IrFunctionMatcher {
-
-    override fun invoke(function: IrFunction): Boolean {
-        val params = function.valueParameters
-        return params.size > index && restriction(params[index])
-    }
-}
-
-internal class DispatchReceiverMatcher(
-        val restriction: (IrValueParameter?) -> Boolean
-) : IrFunctionMatcher {
-
-    override fun invoke(function: IrFunction): Boolean {
-        return restriction(function.dispatchReceiverParameter)
-    }
-}
-
-internal class ExtensionReceiverMatcher(
-        val restriction: (IrValueParameter?) -> Boolean
-) : IrFunctionMatcher {
-
-    override fun invoke(function: IrFunction): Boolean {
-        return restriction(function.extensionReceiverParameter)
-    }
-}
-
-internal class ParameterCountMatcher(
-        val restriction: (Int) -> Boolean
-) : IrFunctionMatcher {
-
-    override fun invoke(function: IrFunction): Boolean {
-        return restriction(function.valueParameters.size)
-    }
-}
-
-internal class FqNameMatcher(
-        val restriction: (FqName) -> Boolean
-) : IrFunctionMatcher {
-
-    override fun invoke(function: IrFunction): Boolean {
-        return restriction(function.fqNameForIrSerialization)
-    }
-}
-
-internal open class IrFunctionMatcherContainer : IrFunctionMatcher {
-    private val restrictions = mutableListOf<IrFunctionMatcher>()
-
-    fun add(restriction: IrFunctionMatcher) {
-        restrictions += restriction
-    }
-
-    fun fqName(restriction: (FqName) -> Boolean) =
-            add(FqNameMatcher(restriction))
-
-    fun parameterCount(restriction: (Int) -> Boolean) =
-            add(ParameterCountMatcher(restriction))
-
-    fun extensionReceiver(restriction: (IrValueParameter?) -> Boolean) =
-            add(ExtensionReceiverMatcher(restriction))
-
-    fun dispatchReceiver(restriction: (IrValueParameter?) -> Boolean) =
-            add(DispatchReceiverMatcher(restriction))
-
-    fun parameter(index: Int, restriction: (IrValueParameter) -> Boolean) =
-            add(ParameterMatcher(index, restriction))
-
-    override fun invoke(function: IrFunction) = restrictions.all { it(function) }
-}
-
-internal fun createIrFunctionRestrictions(restrictions: IrFunctionMatcherContainer.() -> Unit) =
-        IrFunctionMatcherContainer().apply(restrictions)
-
-internal fun IrFunctionMatcherContainer.singleArgumentExtension(
-        fqName: FqName,
-        classes: Collection<IrClassSymbol>
-): IrFunctionMatcherContainer {
-    extensionReceiver { it != null && it.type.classifierOrNull in classes }
-    parameterCount { it == 1 }
-    fqName { it == fqName }
-    return this
-}
-