Compute frontend/backend specific constants.

tests/language/const_constructor3_test.dart

Index: tests/language/const_constructor3_test.dart
diff --git a/tests/language/const_constructor3_test.dart b/tests/language/const_constructor3_test.dart
new file mode 100644
index 0000000000000000000000000000000000000000..2f1353aa27f5b1dae7550781b0468fd290a136a7
--- /dev/null
+++ b/tests/language/const_constructor3_test.dart
@@ -0,0 +1,24 @@
+// Copyright (c) 2014, 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.
+
+class C {
+  final double d;
+  const C(this.d);
+}
+
+class D extends C {
+  const D(var d) : super(d);
+}
+
+const c = const C(0.0); /// 01: ok
+const d = const C(0); /// 02: static type warning, checked mode compile-time error
+const e = const D(0.0); /// 03: ok
+const f = const D(0); /// 04: checked mode compile-time error
+
+main() {
+  print(c); /// 01: continued
+  print(d); /// 02: continued
+  print(e); /// 03: continued
+  print(f); /// 04: continued
+}