Reversed DumpIrTree.kt fix for now, as it breaks tests comparing textual IR representation.

compiler/ir/ir.tree/src/org/jetbrains/kotlin/ir/util/DumpIrTree.kt

@@ -178,9 +178,8 @@ class DumpIrTreeVisitor(out: Appendable) : IrElementVisitor<Unit, String> {
             dumpTypeArguments(expression)
             expression.dispatchReceiver?.accept(this, "\$this")
             expression.extensionReceiver?.accept(this, "\$receiver")
-            for (i in 0..expression.valueArgumentsCount - 1) {
-                val valueArgument = expression.getValueArgument(i)
-                valueArgument?.accept(this, "argument $i")
+            for (valueParameter in expression.descriptor.valueParameters) {
+                expression.getValueArgument(valueParameter.index)?.accept(this, valueParameter.name.asString())
             }
         }
     }