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/*
* Copyright (c) 2020, 2025, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*/
package compiler.debug;
import jdk.test.lib.process.OutputAnalyzer;
import jdk.test.lib.process.ProcessTools;
import jdk.test.lib.Asserts;
/*
* @test
* @key stress randomness
* @bug 8252219 8256535 8317349
* @requires vm.debug == true & vm.compiler2.enabled
* @requires vm.flagless
* @summary Tests that stress compilations with the same seed yield the same
* IGVN, CCP, and macro expansion traces.
* @library /test/lib /
* @run driver compiler.debug.TestStress
*/
public class TestStress {
static String phaseTrace(String stressOption, String traceOption,
int stressSeed) throws Exception {
String className = TestStress.class.getName();
String[] procArgs = {
"-Xcomp", "-XX:-TieredCompilation", "-XX:-Inline", "-XX:+CICountNative",
"-XX:CompileOnly=" + className + "::sum", "-XX:" + traceOption,
"-XX:+" + stressOption, "-XX:StressSeed=" + stressSeed,
className, "10"};
ProcessBuilder pb = ProcessTools.createLimitedTestJavaProcessBuilder(procArgs);
OutputAnalyzer out = new OutputAnalyzer(pb.start());
out.shouldHaveExitValue(0);
return out.getStdout();
}
static String igvnTrace(int stressSeed) throws Exception {
return phaseTrace("StressIGVN", "+TraceIterativeGVN", stressSeed);
}
static String ccpTrace(int stressSeed) throws Exception {
return phaseTrace("StressCCP", "+TracePhaseCCP", stressSeed);
}
static String macroExpansionTrace(int stressSeed) throws Exception {
return phaseTrace("StressMacroExpansion",
"CompileCommand=PrintIdealPhase,*::*,AFTER_MACRO_EXPANSION_STEP",
stressSeed);
}
static void sum(int n) {
int acc = 0;
for (int i = 0; i < n; i++) acc += i;
System.out.println(acc);
}
public static void main(String[] args) throws Exception {
if (args.length == 0) {
for (int s = 0; s < 10; s++) {
Asserts.assertEQ(igvnTrace(s), igvnTrace(s),
"got different IGVN traces for the same seed");
Asserts.assertEQ(ccpTrace(s), ccpTrace(s),
"got different CCP traces for the same seed");
Asserts.assertEQ(macroExpansionTrace(s), macroExpansionTrace(s),
"got different macro expansion traces for the same seed");
}
} else if (args.length > 0) {
sum(Integer.parseInt(args[0]));
}
}
}
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