98ec4a6792
Use the code motion trace produced by TraceOptoPipelining (excluding traces of stubs) to assert that two compilations with the same seed cause StressLCM and StressGCM to take the same randomized decisions. Previously, the entire output produced by PrintOptoStatistics was used instead, which has shown to be too fragile. Also, disable inlining in both TestStressCM.java and the similar TestStressIGVN.java to prevent flaky behavior, and run both tests for ten different seeds to improve coverage. Reviewed-by: kvn, thartmann
71 lines
2.5 KiB
Java
71 lines
2.5 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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package compiler.debug;
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import jdk.test.lib.process.OutputAnalyzer;
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import jdk.test.lib.process.ProcessTools;
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import jdk.test.lib.Asserts;
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/*
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* @test
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* @bug 8252219
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* @requires vm.debug == true & vm.compiler2.enabled
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* @summary Tests that compilations with the same seed yield the same IGVN
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* trace.
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* @library /test/lib /
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* @run driver compiler.debug.TestStressIGVN
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*/
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public class TestStressIGVN {
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static String igvnTrace(int stressSeed) throws Exception {
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String className = TestStressIGVN.class.getName();
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String[] procArgs = {
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"-Xcomp", "-XX:-TieredCompilation", "-XX:-Inline",
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"-XX:CompileOnly=" + className + "::sum", "-XX:+TraceIterativeGVN",
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"-XX:+StressIGVN", "-XX:StressSeed=" + stressSeed,
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className, "10"};
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ProcessBuilder pb = ProcessTools.createJavaProcessBuilder(procArgs);
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OutputAnalyzer out = new OutputAnalyzer(pb.start());
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return out.getStdout();
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}
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static void sum(int n) {
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int acc = 0;
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for (int i = 0; i < n; i++) acc += i;
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System.out.println(acc);
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}
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public static void main(String[] args) throws Exception {
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if (args.length == 0) {
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for (int s = 0; s < 10; s++) {
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Asserts.assertEQ(igvnTrace(s), igvnTrace(s),
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"got different IGVN traces for the same seed");
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}
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} else if (args.length > 0) {
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sum(Integer.parseInt(args[0]));
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}
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}
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}
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