918fe04351
PR-URL: https://github.com/nodejs/node/pull/58070 Reviewed-By: Antoine du Hamel <duhamelantoine1995@gmail.com> Reviewed-By: Darshan Sen <raisinten@gmail.com> Reviewed-By: Joyee Cheung <joyeec9h3@gmail.com> Reviewed-By: Rafael Gonzaga <rafael.nunu@hotmail.com>
53 lines
1.3 KiB
JavaScript
53 lines
1.3 KiB
JavaScript
// Copyright 2024 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 --turboshaft-string-concat-escape-analysis
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function g() {}
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%NeverOptimizeFunction(g);
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function foo(s1, s2, deopt_n) {
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let str1 = "> " + s1;
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if (deopt_n == 0) {
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g();
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return str1;
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}
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let str2 = str1 + " 23";
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if (deopt_n == 1) {
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g();
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return str2;
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}
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let str3 = str2 + " 45";
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if (deopt_n == 2) {
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g();
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return str3;
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}
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return s1 + s2;
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}
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%PrepareFunctionForOptimization(foo);
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assertEquals("a bc d", foo("a b", "c d", -1));
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%OptimizeFunctionOnNextCall(foo);
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assertEquals("a bc d", foo("a b", "c d", -1));
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assertEquals("> a b", foo("a b", "c d", 0));
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%ClearFunctionFeedback(foo);
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%PrepareFunctionForOptimization(foo);
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assertEquals("a bc d", foo("a b", "c d", -1));
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%OptimizeFunctionOnNextCall(foo);
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assertEquals("a bc d", foo("a b", "c d", -1));
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assertEquals("> a b 23", foo("a b", "c d", 1));
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%ClearFunctionFeedback(foo);
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%PrepareFunctionForOptimization(foo);
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assertEquals("a bc d", foo("a b", "c d", -1));
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%OptimizeFunctionOnNextCall(foo);
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assertEquals("a bc d", foo("a b", "c d", -1));
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assertEquals("> a b 23 45", foo("a b", "c d", 2));
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