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PR-URL: https://github.com/nodejs/node/pull/28918 Reviewed-By: Colin Ihrig <cjihrig@gmail.com> Reviewed-By: Ben Noordhuis <info@bnoordhuis.nl> Reviewed-By: Jiawen Geng <technicalcute@gmail.com> Reviewed-By: Rich Trott <rtrott@gmail.com>
42 lines
1003 B
JavaScript
42 lines
1003 B
JavaScript
// Copyright 2016 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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var g_eval = eval;
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function emit_f(size) {
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var body = "function f(x) {" +
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" if (x < 0) return x;" +
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" var a = [1];" +
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" if (x > 0) return [";
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for (var i = 0; i < size; i++) {
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body += "0.1, ";
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}
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body += " ];" +
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" return a;" +
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"}";
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g_eval(body);
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}
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// Length must be big enough to make the backing store's size not fit into
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// a single instruction's immediate field (2^12).
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var kLength = 701;
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emit_f(kLength);
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%PrepareFunctionForOptimization(f);
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f(1);
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f(1);
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%OptimizeFunctionOnNextCall(f);
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var a = f(1);
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// Allocating something else should not disturb |a|.
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var b = new Object();
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for (var i = 0; i < kLength; i++) {
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assertEquals(0.1, a[i]);
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}
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// Allocating more should not crash.
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for (var i = 0; i < 300; i++) {
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f(1);
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}
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