Add a type kind to TypedSelector. A typed selector can either be

sdk/lib/_internal/compiler/implementation/ssa/codegen.dart

Index: sdk/lib/_internal/compiler/implementation/ssa/codegen.dart
===================================================================
--- sdk/lib/_internal/compiler/implementation/ssa/codegen.dart	(revision 18249)
+++ sdk/lib/_internal/compiler/implementation/ssa/codegen.dart	(working copy)
@@ -1567,9 +1567,16 @@
     int receiverIndex = node.isInterceptorCall ? 1 : 0;
     HType receiverHType = types[node.inputs[receiverIndex]];
     DartType receiverType = receiverHType.computeType(compiler);
-    if (receiverType != null &&
-        !identical(receiverType.kind, TypeKind.MALFORMED_TYPE)) {
-      return new TypedSelector(receiverType, defaultSelector);
+    if (receiverType != null && !receiverType.isMalformed) {
+      TypedSelectorKind kind;
+      if (receiverHType.isExact()) {
+        kind = TypedSelectorKind.EXACT;
+      } else if (receiverHType.isInterfaceType()) {
+        kind = TypedSelectorKind.INTERFACE;
+      } else {
+        kind = TypedSelectorKind.SUBCLASS;
+      }
+      return new TypedSelector(receiverType, kind, defaultSelector);
     } else {
       return defaultSelector;
     }