Check in codegen test expectations.

test/codegen/expect/language/hashcode_dynamic_test.js

Index: test/codegen/expect/language/hashcode_dynamic_test.js
diff --git a/test/codegen/expect/language/hashcode_dynamic_test.js b/test/codegen/expect/language/hashcode_dynamic_test.js
new file mode 100644
index 0000000000000000000000000000000000000000..cb2f02ee4081a586931922d6abe7af04bdfe59f8
--- /dev/null
+++ b/test/codegen/expect/language/hashcode_dynamic_test.js
@@ -0,0 +1,19 @@
+dart_library.library('language/hashcode_dynamic_test', null, /* Imports */[
+  'dart_sdk',
+  'expect'
+], function load__hashcode_dynamic_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 hashcode_dynamic_test = Object.create(null);
+  let VoidTovoid = () => (VoidTovoid = dart.constFn(dart.definiteFunctionType(dart.void, [])))();
+  hashcode_dynamic_test.main = function() {
+    let x = 3;
+    expect$.Expect.equals(3, dart.hashCode(x));
+  };
+  dart.fn(hashcode_dynamic_test.main, VoidTovoid());
+  // Exports:
+  exports.hashcode_dynamic_test = hashcode_dynamic_test;
+});