c4ec887262
Reviewed-by: kvn, mseledtsov
83 lines
2.4 KiB
Java
83 lines
2.4 KiB
Java
/*
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* Copyright (c) 2008, 2018, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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/*
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* @test
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*
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* @summary converted from VM Testbase jit/deoptimization/test01.
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* VM Testbase keywords: [jit, quick]
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*
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* @library /vmTestbase
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* /test/lib
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* @run driver jdk.test.lib.FileInstaller . .
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* @build jit.deoptimization.test01.test01
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* @run driver ExecDriver --java jit.deoptimization.test01.test01
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*/
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package jit.deoptimization.test01;
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import nsk.share.TestFailure;
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/*
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* Simple loop causes the optimizer to deoptimize
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* foo methos when an instance of class B is created.
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*
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* run with the -XX:TraceDeoptimization to observ the result.
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*/
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class test01 {
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public static void main (String[] args) {
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A obj = new A();
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for (int index = 0; index < 100; index++) {
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obj.used_alot();
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}
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}
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}
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class A {
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protected final int counter = 25000;
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protected int count = 0;
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public void foo(int index) {
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count++;
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if (index == counter - 1) {
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try {
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((B)Class.forName("B").newInstance()).foo(index);
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}
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catch(Exception e) {
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}
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}
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}
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public void used_alot() {
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for (int index = 0; index < counter; index++) {
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foo(index);
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}
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}
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}
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class B extends A {
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public void foo(int index) {
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count--;
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}
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};
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