blob: a5d4b9f3372c3737d4012484e6f6482f17a652f1 [file] [log] [blame]
// Copyright 2017 the V8 project authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
// Flags: --allow-natives-syntax
(function() {
function foo(x) { return Number.isNaN(x); }
assertTrue(foo(+undefined));
assertFalse(foo(undefined));
%OptimizeFunctionOnNextCall(foo);
assertTrue(foo(+undefined));
assertFalse(foo(undefined));
})();
(function() {
function foo(x) { return Number.isNaN(+x); }
assertTrue(foo(+undefined));
assertFalse(foo(0));
%OptimizeFunctionOnNextCall(foo);
assertTrue(foo(+undefined));
assertFalse(foo(0));
})();
(function() {
function foo(x) { return Number.isNaN(x|0); }
assertFalse(foo(+undefined));
assertFalse(foo(0));
%OptimizeFunctionOnNextCall(foo);
assertFalse(foo(+undefined));
assertFalse(foo(0));
})();
(function() {
function foo(x) { return Number.isNaN("" + x); }
assertFalse(foo(undefined));
assertFalse(foo(0));
%OptimizeFunctionOnNextCall(foo);
assertFalse(foo(undefined));
assertFalse(foo(0));
})();
(function() {
function foo(x) { return Number.isNaN(0/0); }
assertTrue(foo());
assertTrue(foo());
%OptimizeFunctionOnNextCall(foo);
assertTrue(foo());
assertTrue(foo());
})();