31a3cfbc10
BUG=v8:8801 Change-Id: I9d9d9824c6c9ad0176bbfd3723da1b578b17c256 Reviewed-on: https://chromium-review.googlesource.com/c/1495555 Commit-Queue: Ross McIlroy <rmcilroy@chromium.org> Reviewed-by: Mythri Alle <mythria@chromium.org> Cr-Commit-Position: refs/heads/master@{#60001}
30 lines
739 B
JavaScript
30 lines
739 B
JavaScript
// Copyright 2019 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
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(function ShortcutEmptyStringAddRight() {
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let ar = new Float32Array(1);
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function opt(i){
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return ar[i] + (NaN ? 0 : '');
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}
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%PrepareFunctionForOptimization(opt);
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ar[0] = 42;
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opt(1);
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%OptimizeFunctionOnNextCall(opt);
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assertEquals("42", opt(0));
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})();
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(function ShortcutiEmptyStringAddLeft() {
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let ar = new Float32Array(1);
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function opt(i){
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return (NaN ? 0 : '') + ar[i];
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}
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%PrepareFunctionForOptimization(opt);
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ar[0] = 42;
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opt(1);
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%OptimizeFunctionOnNextCall(opt);
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assertEquals("42", opt(0));
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})();
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