Check in codegen test expectations.

test/codegen/expect/language/compile_time_constant9_test.js

Index: test/codegen/expect/language/compile_time_constant9_test.js
diff --git a/test/codegen/expect/language/compile_time_constant9_test.js b/test/codegen/expect/language/compile_time_constant9_test.js
new file mode 100644
index 0000000000000000000000000000000000000000..434b5bb50f5de69564159f9dd1774e8e6f556a99
--- /dev/null
+++ b/test/codegen/expect/language/compile_time_constant9_test.js
@@ -0,0 +1,34 @@
+dart_library.library('language/compile_time_constant9_test', null, /* Imports */[
+  'dart_sdk',
+  'expect'
+], function load__compile_time_constant9_test(exports, dart_sdk, expect) {
+  'use strict';
+  const core = dart_sdk.core;
+  const dart = dart_sdk.dart;
+  const dartx = dart_sdk.dartx;
+  const expect$ = expect.expect;
+  const compile_time_constant9_test = Object.create(null);
+  let VoidTodynamic = () => (VoidTodynamic = dart.constFn(dart.definiteFunctionType(dart.dynamic, [])))();
+  compile_time_constant9_test.B = class B extends core.Object {
+    new() {
+    }
+  };
+  dart.setSignature(compile_time_constant9_test.B, {
+    constructors: () => ({new: dart.definiteFunctionType(compile_time_constant9_test.B, [])})
+  });
+  let const$;
+  compile_time_constant9_test.A = class A extends core.Object {
+    new() {
+      this.x = const$ || (const$ = dart.const(new compile_time_constant9_test.B()));
+    }
+  };
+  dart.setSignature(compile_time_constant9_test.A, {
+    constructors: () => ({new: dart.definiteFunctionType(compile_time_constant9_test.A, [])})
+  });
+  compile_time_constant9_test.main = function() {
+    expect$.Expect.isTrue(core.identical(new compile_time_constant9_test.A().x, new compile_time_constant9_test.A().x));
+  };
+  dart.fn(compile_time_constant9_test.main, VoidTodynamic());
+  // Exports:
+  exports.compile_time_constant9_test = compile_time_constant9_test;
+});