cps-ir: Set runtime type information for new objects that require it.

tests/compiler/dart2js/js_backend_cps_ir_constructor_test.dart

 // Copyright (c) 2015, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 // VMOptions=-DUSE_CPS_IR=true
 
 // Tests of interceptors.
 
 library constructor_test;
 
 import 'js_backend_cps_ir.dart';
@@ skipping 146 matching lines @@
   new Foo();
 }
 """,
 r"""
 function() {
   var v0;
   v0 = new V.Foo();
   v0.Bar$5$q$w$y$z("x", null, "w", "y", "z");
   return v0;
 }"""),
-];
+  const TestEntry(r"""
+class C<T> {
+  foo() => T;
+}
+main() {
+  print(new C<int>().foo());
+}""", r"""
+function() {
+  var v0;
+  v0 = P.$int;
+  P.print(H.setRuntimeTypeInfo(V.C$(), [v0]).foo$0());
+  return null;
+}"""),
+  const TestEntry(r"""
+class C<T> {
+  foo() => C;
+}
+main() {
+  print(new C<int>().foo());
+}""", r"""
+function() {
+  P.print(V.C$().foo$0());
+  return null;
+}"""),
+  const TestEntry.forMethod('function(C#foo)', r"""
+class C<T> {
+  foo() => new D<C<T>>();
+}
+class D<T> {
+  bar() => T;
+}
+main() {
+  print(new C<int>().foo().bar());
+}""", r"""
+function() {
+  var v0;
+  v0 = [V.C, H.getTypeArgumentByIndex(this, 0)];
+  return H.setRuntimeTypeInfo(V.D$(), [v0]);
+}"""),
+ ];
 
 void main() {
   runTests(tests);
 }