Reifier hookup

test/dart_codegen/expect/d/d.dart

Index: test/dart_codegen/expect/d/d.dart
diff --git a/test/dart_codegen/expect/d/d.dart b/test/dart_codegen/expect/d/d.dart
index 66ef35375734b50569db77904c7be9cbd45d3184..a855d4b43f9dfa93334dbde156c47404d4e051f0 100644
--- a/test/dart_codegen/expect/d/d.dart
+++ b/test/dart_codegen/expect/d/d.dart
@@ -8,9 +8,9 @@ void foo() {
   var x = f3(((__x0) => DEVC$RT.cast(__x0, dynamic, DDC$a$.A, "DynamicCast",
       """line 10, column 14 of test/dart_codegen/types/d.dart: """,
       __x0 is DDC$a$.A, true))(f4("""hello""")));
-  var y = f1(DEVC$RT.cast(f4, __t1, DDC$a$.A2A, "CompositeCast",
+  var y = f1(DEVC$RT.cast(f4, __CastType1, DDC$a$.A2A, "CompositeCast",
       """line 11, column 14 of test/dart_codegen/types/d.dart: """,
       f4 is DDC$a$.A2A, false));
   var z = f2(f3);
 }
-typedef dynamic __t1(dynamic __u2);
+typedef dynamic __CastType1(dynamic __u2);