Check in codegen test expectations.

test/codegen/expect/language/nan_identical_test.js

Index: test/codegen/expect/language/nan_identical_test.js
diff --git a/test/codegen/expect/language/nan_identical_test.js b/test/codegen/expect/language/nan_identical_test.js
new file mode 100644
index 0000000000000000000000000000000000000000..5f2eb26c7471d0f5618d52d0e997ae050fb72b34
--- /dev/null
+++ b/test/codegen/expect/language/nan_identical_test.js
@@ -0,0 +1,58 @@
+dart_library.library('language/nan_identical_test', null, /* Imports */[
+  'dart_sdk',
+  'expect'
+], function load__nan_identical_test(exports, dart_sdk, expect) {
+  'use strict';
+  const core = dart_sdk.core;
+  const typed_data = dart_sdk.typed_data;
+  const dart = dart_sdk.dart;
+  const dartx = dart_sdk.dartx;
+  const expect$ = expect.expect;
+  const nan_identical_test = Object.create(null);
+  let intTodouble = () => (intTodouble = dart.constFn(dart.definiteFunctionType(core.double, [core.int])))();
+  let VoidTodouble = () => (VoidTodouble = dart.constFn(dart.definiteFunctionType(core.double, [])))();
+  let VoidTodynamic = () => (VoidTodynamic = dart.constFn(dart.definiteFunctionType(dart.dynamic, [])))();
+  let dynamicAnddynamicTodynamic = () => (dynamicAnddynamicTodynamic = dart.constFn(dart.definiteFunctionType(dart.dynamic, [dart.dynamic, dart.dynamic])))();
+  nan_identical_test.uint64toDouble = function(i) {
+    let buffer = typed_data.Uint8List.new(8)[dartx.buffer];
+    let bdata = typed_data.ByteData.view(buffer);
+    bdata[dartx.setUint64](0, i);
+    return bdata[dartx.getFloat64](0);
+  };
+  dart.fn(nan_identical_test.uint64toDouble, intTodouble());
+  nan_identical_test.createOtherNAN = function() {
+    return nan_identical_test.uint64toDouble((1)[dartx['<<']](64) - 2);
+  };
+  dart.fn(nan_identical_test.createOtherNAN, VoidTodouble());
+  nan_identical_test.main = function() {
+    let otherNAN = nan_identical_test.createOtherNAN();
+    for (let i = 0; i < 100; i++) {
+      expect$.Expect.isFalse(nan_identical_test.checkIdentical(core.double.NAN, -dart.notNull(core.double.NAN)));
+      expect$.Expect.isTrue(nan_identical_test.checkIdentical(core.double.NAN, core.double.NAN));
+      expect$.Expect.isTrue(nan_identical_test.checkIdentical(-dart.notNull(core.double.NAN), -dart.notNull(core.double.NAN)));
+      expect$.Expect.isFalse(nan_identical_test.checkIdentical(otherNAN, -dart.notNull(otherNAN)));
+      expect$.Expect.isTrue(nan_identical_test.checkIdentical(otherNAN, otherNAN));
+      expect$.Expect.isTrue(nan_identical_test.checkIdentical(-dart.notNull(otherNAN), -dart.notNull(otherNAN)));
+      let a = otherNAN;
+      let b = core.double.NAN;
+      expect$.Expect.isFalse(nan_identical_test.checkIdentical(a, b));
+      expect$.Expect.isFalse(nan_identical_test.checkIdentical(-dart.notNull(a), -dart.notNull(b)));
+      expect$.Expect.isFalse(nan_identical_test.checkIdentical(-dart.notNull(a), b));
+      expect$.Expect.isFalse(nan_identical_test.checkIdentical(a, -dart.notNull(b)));
+      a = -dart.notNull(a);
+      expect$.Expect.isFalse(nan_identical_test.checkIdentical(a, b));
+      expect$.Expect.isFalse(nan_identical_test.checkIdentical(-dart.notNull(a), -dart.notNull(b)));
+      expect$.Expect.isFalse(nan_identical_test.checkIdentical(-dart.notNull(a), b));
+      expect$.Expect.isFalse(nan_identical_test.checkIdentical(a, -dart.notNull(b)));
+      expect$.Expect.isTrue(nan_identical_test.checkIdentical(- -dart.notNull(a), a));
+      expect$.Expect.isTrue(nan_identical_test.checkIdentical(- -dart.notNull(b), b));
+    }
+  };
+  dart.fn(nan_identical_test.main, VoidTodynamic());
+  nan_identical_test.checkIdentical = function(a, b) {
+    return core.identical(a, b);
+  };
+  dart.fn(nan_identical_test.checkIdentical, dynamicAnddynamicTodynamic());
+  // Exports:
+  exports.nan_identical_test = nan_identical_test;
+});