53 lines
2.2 KiB
Java
53 lines
2.2 KiB
Java
/*
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* Copyright (c) 2015, 2022, 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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package compiler.loopopts;
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import java.lang.reflect.Method;
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import jdk.test.whitebox.WhiteBox;
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import jdk.test.lib.Asserts;
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import compiler.whitebox.CompilerWhiteBoxTest;
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public class UseCountedLoopSafepoints {
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private static final WhiteBox WB = WhiteBox.getWhiteBox();
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private static final String METHOD_NAME = "testMethod";
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private long accum = 0;
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public static void main (String args[]) throws Exception {
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new UseCountedLoopSafepoints().testMethod();
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Method m = UseCountedLoopSafepoints.class.getDeclaredMethod(METHOD_NAME);
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String directive = "[{ match: \"" + UseCountedLoopSafepoints.class.getName().replace('.', '/')
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+ "." + METHOD_NAME + "\", " + "BackgroundCompilation: false }]";
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Asserts.assertTrue(WB.addCompilerDirective(directive) == 1, "Can't add compiler directive");
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Asserts.assertTrue(WB.enqueueMethodForCompilation(m,
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CompilerWhiteBoxTest.COMP_LEVEL_FULL_OPTIMIZATION), "Can't enqueue method");
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}
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private void testMethod() {
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for (int i = 0; i < 100; i++) {
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accum += accum << 5 + accum >> 4 - accum >>> 5;
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}
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}
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}
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