Check in codegen test expectations.

test/codegen/expect/language/issue12336_test.js

Index: test/codegen/expect/language/issue12336_test.js
diff --git a/test/codegen/expect/language/issue12336_test.js b/test/codegen/expect/language/issue12336_test.js
new file mode 100644
index 0000000000000000000000000000000000000000..999a0a48ccc008ea6d317fdc109a801db5e895e8
--- /dev/null
+++ b/test/codegen/expect/language/issue12336_test.js
@@ -0,0 +1,44 @@
+dart_library.library('language/issue12336_test', null, /* Imports */[
+  'dart_sdk',
+  'expect'
+], function load__issue12336_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 issue12336_test = Object.create(null);
+  const compiler_annotations = Object.create(null);
+  let VoidTodynamic = () => (VoidTodynamic = dart.constFn(dart.definiteFunctionType(dart.dynamic, [])))();
+  let VoidToint = () => (VoidToint = dart.constFn(dart.definiteFunctionType(core.int, [])))();
+  let dynamicAnddynamicTodynamic = () => (dynamicAnddynamicTodynamic = dart.constFn(dart.definiteFunctionType(dart.dynamic, [dart.dynamic, dart.dynamic])))();
+  issue12336_test.main = function() {
+    let result = issue12336_test.foo(1, 2);
+    expect$.Expect.equals(1, dart.dindex(result, 0));
+    expect$.Expect.equals(2, dart.dindex(result, 1));
+    result = issue12336_test.foo([], 2);
+    expect$.Expect.equals(0, dart.dindex(result, 0));
+    expect$.Expect.listEquals([], core.List._check(dart.dindex(result, 1)));
+  };
+  dart.fn(issue12336_test.main, VoidTodynamic());
+  issue12336_test.foo = function(a, b) {
+    dart.fn(() => 42, VoidToint());
+    if (core.List.is(a)) {
+      let saved = core.List.as(a);
+      a = dart.dload(a, 'length');
+      b = saved;
+    }
+    return [a, b];
+  };
+  dart.fn(issue12336_test.foo, dynamicAnddynamicTodynamic());
+  compiler_annotations.DontInline = class DontInline extends core.Object {
+    new() {
+    }
+  };
+  dart.setSignature(compiler_annotations.DontInline, {
+    constructors: () => ({new: dart.definiteFunctionType(compiler_annotations.DontInline, [])})
+  });
+  // Exports:
+  exports.issue12336_test = issue12336_test;
+  exports.compiler_annotations = compiler_annotations;
+});