Check in codegen test expectations.

test/codegen/expect/language/assert_assignable_type_test.js

Index: test/codegen/expect/language/assert_assignable_type_test.js
diff --git a/test/codegen/expect/language/assert_assignable_type_test.js b/test/codegen/expect/language/assert_assignable_type_test.js
new file mode 100644
index 0000000000000000000000000000000000000000..bb180b1fec5aee841b72977470244768660169e5
--- /dev/null
+++ b/test/codegen/expect/language/assert_assignable_type_test.js
@@ -0,0 +1,32 @@
+dart_library.library('language/assert_assignable_type_test', null, /* Imports */[
+  'dart_sdk'
+], function load__assert_assignable_type_test(exports, dart_sdk) {
+  'use strict';
+  const core = dart_sdk.core;
+  const dart = dart_sdk.dart;
+  const dartx = dart_sdk.dartx;
+  const assert_assignable_type_test = Object.create(null);
+  let VoidTodynamic = () => (VoidTodynamic = dart.constFn(dart.definiteFunctionType(dart.dynamic, [])))();
+  let dynamicTodynamic = () => (dynamicTodynamic = dart.constFn(dart.definiteFunctionType(dart.dynamic, [dart.dynamic])))();
+  assert_assignable_type_test.main = function() {
+    let y = -2147483648;
+    assert_assignable_type_test.testInt64List();
+  };
+  dart.fn(assert_assignable_type_test.main, VoidTodynamic());
+  assert_assignable_type_test.testInt64List = function() {
+    let array = core.List.new(10);
+    assert_assignable_type_test.testInt64ListImpl(array);
+  };
+  dart.fn(assert_assignable_type_test.testInt64List, VoidTodynamic());
+  assert_assignable_type_test.testInt64ListImpl = function(array) {
+    for (let i = 0; i < 10; ++i) {
+    }
+    let sum = 0;
+    for (let i = 0; i < 10; ++i) {
+      dart.dsetindex(array, i, -36028797018963968 + i);
+    }
+  };
+  dart.fn(assert_assignable_type_test.testInt64ListImpl, dynamicTodynamic());
+  // Exports:
+  exports.assert_assignable_type_test = assert_assignable_type_test;
+});