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

tests/compiler/dart2js/js_backend_cps_ir_constructor_test.dart

Index: tests/compiler/dart2js/js_backend_cps_ir_constructor_test.dart
diff --git a/tests/compiler/dart2js/js_backend_cps_ir_constructor_test.dart b/tests/compiler/dart2js/js_backend_cps_ir_constructor_test.dart
index 1e5f4bf9ff53a8df521f739e08193f8d3168c5d9..39aa301f44f257d73fc094bccd63c313eae5c1c4 100644
--- a/tests/compiler/dart2js/js_backend_cps_ir_constructor_test.dart
+++ b/tests/compiler/dart2js/js_backend_cps_ir_constructor_test.dart
@@ -164,6 +164,54 @@ function() {
   v0.Bar$5$q$w$y$z("x", null, "w", "y", "z");
   return v0;
 }"""),
+  const TestEntry(r"""
+class C<T> {
+  foo() => T;
+}
+main() {
+  print(new C<int>().foo());
+}""", r"""
+function() {
+  P.print(V.C$([P.$int]).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('generative_constructor(C#)', r"""
+class C<T> {
+  C() { print(T); }
+  foo() => print(T);
+}
+main() {
+  new C<int>();
+}""",r"""
+function(v0) {
+  var v1;
+  v1 = H.setRuntimeTypeInfo(new V.C(), v0);
+  v1.C$0();
+  return v1;
+}"""),
+  const TestEntry.forMethod('generative_constructor(C#)', r"""
+class C<T> {
+  var x;
+  C() : x = new D<T>();
+}
+class D<T> {
+  foo() => T;
+}
+main() {
+  print(new C<int>().x.foo());
+}""", r"""
+"""),
 ];
 
 void main() {