fed3636f12
Add 'StressIGVN' option to let C2 randomize IGVN worklist order. When enabled, the worklist is shuffled before each main run of the IGVN loop. Also add 'StressSeed=N' option to specify the seed. If the seed is not specified, a random one is generated. In either case, the seed is logged if 'LogCompilation' is enabled. The new options are declared as production+diagnostic for consistency with the existing 'StressLCM' and 'StressGCM' options. Reviewed-by: kvn, chagedorn, thartmann
45 lines
1.6 KiB
Java
45 lines
1.6 KiB
Java
/*
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* Copyright (c) 2020, 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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* @bug 8252219
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* @requires vm.compiler2.enabled
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* @summary Tests that different combinations of the options -XX:+StressIGVN and
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* -XX:StressSeed=N are accepted.
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* @run main/othervm -XX:+StressIGVN
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* compiler.arguments.TestStressIGVNOptions
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* @run main/othervm -XX:+StressIGVN -XX:StressSeed=42
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* compiler.arguments.TestStressIGVNOptions
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*/
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package compiler.arguments;
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public class TestStressIGVNOptions {
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static public void main(String[] args) {
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System.out.println("Passed");
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}
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}
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