dart2js cps: 'is' checks on types with type arguments.

pkg/compiler/lib/src/cps_ir/cps_ir_tracer.dart

Index: pkg/compiler/lib/src/cps_ir/cps_ir_tracer.dart
diff --git a/pkg/compiler/lib/src/cps_ir/cps_ir_tracer.dart b/pkg/compiler/lib/src/cps_ir/cps_ir_tracer.dart
index 4be0f0cafb94acca095fd7589afe62bf57b146a6..77b757f902d81389904f8ce913cf1a809ce9b0f1 100644
--- a/pkg/compiler/lib/src/cps_ir/cps_ir_tracer.dart
+++ b/pkg/compiler/lib/src/cps_ir/cps_ir_tracer.dart
@@ -236,8 +236,9 @@ class IRTracer extends TracerUtil implements cps_ir.Visitor {
     String dummy = names.name(node);
     String operator = node.isTypeTest ? 'is' : 'as';
     List<String> entries = new List<String>();
-    String receiver = formatReference(node.receiver);
-    printStmt(dummy, "TypeOperator ($operator $receiver ${node.type})");
+    String value = formatReference(node.value);
+    String kont = formatReference(node.continuation);
+    printStmt(dummy, "TypeOperator ($operator $value ${node.type}) $kont");
   }
 
   visitInvokeContinuation(cps_ir.InvokeContinuation node) {