src/v8/test/mjsunit/regress/regress-995.js

// Copyright 2010 the V8 project authors. All rights reserved.
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// modification, are permitted provided that the following conditions are
// met:
//
//     * Redistributions of source code must retain the above copyright
//       notice, this list of conditions and the following disclaimer.
//     * Redistributions in binary form must reproduce the above
//       copyright notice, this list of conditions and the following
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//       with the distribution.
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//
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//
// A number of hydrogen instructions did not correctly compare its
// data during GVN.
//
// Flags: --allow-natives-syntax

// HHasInstance.
function f(value) {
  if (%_IsJSReceiver(value)) {
    if ((%_IsArray(value))) assertTrue(false);
  }
}
f(new String("bar"));

// HClassOf.
function g(value) {
  if (%_ClassOf(value) === 'Date') {
    if (%_ClassOf(value) === 'String') assertTrue(false);
  }
}
g(new Date());

// HIsNull.
function h(value) {
  if (value == null) {
    if (value === null) assertTrue(false);
  }
}
h(undefined);