27 lines
845 B
JavaScript
27 lines
845 B
JavaScript
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// Copyright 2017 the V8 project authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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// Flags: --allow-natives-syntax --no-always-opt --opt
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// Check that constant-folding of ToString operations works properly for NaN.
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(function() {
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const foo = () => `${NaN}`;
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assertEquals("NaN", foo());
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assertEquals("NaN", foo());
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%OptimizeFunctionOnNextCall(foo);
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assertEquals("NaN", foo());
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})();
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// Check that constant-folding of ToString operations works properly for 0/-0.
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(function() {
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const foo = x => `${x ? 0 : -0}`;
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assertEquals("0", foo(true));
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assertEquals("0", foo(false));
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assertEquals("0", foo(true));
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assertEquals("0", foo(false));
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%OptimizeFunctionOnNextCall(foo);
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assertEquals("0", foo(true));
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assertEquals("0", foo(false));
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})();
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