Check in codegen test expectations.

test/codegen/expect/language/number_constant_folding1_test.js

Index: test/codegen/expect/language/number_constant_folding1_test.js
diff --git a/test/codegen/expect/language/number_constant_folding1_test.js b/test/codegen/expect/language/number_constant_folding1_test.js
new file mode 100644
index 0000000000000000000000000000000000000000..feb4fc654aec65f3fe6657946513002a333f8be4
--- /dev/null
+++ b/test/codegen/expect/language/number_constant_folding1_test.js
@@ -0,0 +1,33 @@
+dart_library.library('language/number_constant_folding1_test', null, /* Imports */[
+  'dart_sdk',
+  'expect'
+], function load__number_constant_folding1_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 number_constant_folding1_test = Object.create(null);
+  let VoidTodynamic = () => (VoidTodynamic = dart.constFn(dart.definiteFunctionType(dart.dynamic, [])))();
+  number_constant_folding1_test.highDigitTruncationTest = function() {
+    expect$.Expect.equals(4886718346, 4886718345 + 1);
+    expect$.Expect.isTrue(8321499136 > 0);
+    expect$.Expect.equals(240, 15 * 16);
+    expect$.Expect.equals(4080, 255 * 16);
+    expect$.Expect.equals(65520, 4095 * 16);
+    expect$.Expect.equals(1048560, 65535 * 16);
+    expect$.Expect.equals(16777200, 1048575 * 16);
+    expect$.Expect.equals(268435440, 16777215 * 16);
+    expect$.Expect.equals(4294967280, 268435455 * 16);
+    expect$.Expect.equals(68719476720, 4294967295 * 16);
+    expect$.Expect.equals(1099511627760, 68719476735 * 16);
+    expect$.Expect.equals(17592186044400, 1099511627775 * 16);
+  };
+  dart.fn(number_constant_folding1_test.highDigitTruncationTest, VoidTodynamic());
+  number_constant_folding1_test.main = function() {
+    number_constant_folding1_test.highDigitTruncationTest();
+  };
+  dart.fn(number_constant_folding1_test.main, VoidTodynamic());
+  // Exports:
+  exports.number_constant_folding1_test = number_constant_folding1_test;
+});