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// 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 --no-always-opt --opt
// Check that constant-folding of ToString operations works properly for NaN.
(function() {
const foo = () => `${NaN}`;
assertEquals("NaN", foo());
assertEquals("NaN", foo());
%OptimizeFunctionOnNextCall(foo);
assertEquals("NaN", foo());
})();
// Check that constant-folding of ToString operations works properly for 0/-0.
(function() {
const foo = x => `${x ? 0 : -0}`;
assertEquals("0", foo(true));
assertEquals("0", foo(false));
assertEquals("0", foo(true));
assertEquals("0", foo(false));
%OptimizeFunctionOnNextCall(foo);
assertEquals("0", foo(true));
assertEquals("0", foo(false));
})();
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