Added possibility of debug output from lowerings

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

@@ -318,6 +318,14 @@ internal class KonanSymbols(context: Context, val symbolTable: SymbolTable): Sym
     val freeze = symbolTable.referenceSimpleFunction(
             builtInsPackage("konan", "worker").getContributedFunctions(Name.identifier("freeze"), NoLookupLocation.FROM_BACKEND).single())
 
+    val println = symbolTable.referenceSimpleFunction(
+            builtInsPackage("kotlin", "io").getContributedFunctions(Name.identifier("println"), NoLookupLocation.FROM_BACKEND)
+                    .single { it.valueParameters.singleOrNull()?.type == builtIns.stringType })
+
+    val anyNToString = symbolTable.referenceSimpleFunction(
+            builtInsPackage("kotlin").getContributedFunctions(Name.identifier("toString"), NoLookupLocation.FROM_BACKEND)
+                    .single { it.extensionReceiverParameter?.type == builtIns.nullableAnyType})
+
     val getContinuation = symbolTable.referenceSimpleFunction(
             context.getInternalFunctions("getContinuation").single())
 

backend.native/compiler/ir/backend.native/src/org/jetbrains/kotlin/backend/konan/lower/SuspendFunctionsLowering.kt

@@ -1194,6 +1194,13 @@ internal class SuspendFunctionsLowering(val context: Context): FileLoweringPass
         private fun IrBuilderWithScope.irThrowIfNotNull(exception: IrValueDeclaration) =
                 irIfThen(irNot(irEqeqeq(irGet(exception), irNull())),
                         irThrow(irImplicitCast(irGet(exception), exception.type.makeNotNull())))
+
+        fun IrBuilderWithScope.irDebugOutput(value: IrExpression) =
+                irCall(symbols.println).apply {
+                    putValueArgument(0, irCall(symbols.anyNToString).apply {
+                        extensionReceiver = value
+                    })
+                }
     }
 
     private open class VariablesScopeTracker: IrElementVisitorVoid {