mirror of
https://github.com/nodejs/node.git
synced 2025-05-16 10:39:59 +00:00
f579e11940
PR-URL: https://github.com/nodejs/node/pull/26685 Reviewed-By: Anna Henningsen <anna@addaleax.net> Reviewed-By: Michaël Zasso <targos@protonmail.com> Reviewed-By: Refael Ackermann <refack@gmail.com>
29 lines
925 B
JavaScript
29 lines
925 B
JavaScript
// 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 = () => `${NaN}`;
|
|
%PrepareFunctionForOptimization(foo);
|
|
assertEquals("NaN", foo());
|
|
assertEquals("NaN", foo());
|
|
%OptimizeFunctionOnNextCall(foo);
|
|
assertEquals("NaN", foo());
|
|
})();
|
|
|
|
// Check that constant-folding of ToString operations works properly for 0/-0.
|
|
(function() {
|
|
const foo = x => `${x ? 0 : -0}`;
|
|
%PrepareFunctionForOptimization(foo);
|
|
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));
|
|
})();
|