jdk-24/test/hotspot/jtreg/compiler/jvmci/TestEnableJVMCIProduct.java

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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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 * 2 along with this work; if not, write to the Free Software Foundation,
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/*
 * @test
 * @bug 8235539 8245717
 * @summary Tests effect of -XX:+EnableJVMCIProduct on EnableJVMCI and UseJVMCICompiler
 * @requires vm.flagless
 * @requires vm.jvmci
 * @library /test/lib
 * @run driver TestEnableJVMCIProduct
 */

import jdk.test.lib.process.ProcessTools;
import jdk.test.lib.process.OutputAnalyzer;

public class TestEnableJVMCIProduct {

    static class Expectation {
        final String name;
        final String value;
        final String origin;
        final String pattern;
        Expectation(final String name, String value, String origin) {
            this.name = name;
            this.value = value;
            this.origin = origin;
            this.pattern = "bool +" + name + " += " + value + " +\\{JVMCI product\\} \\{" + origin + "\\}";
        }
    }

    public static void main(String[] args) throws Exception {
        // Test EnableJVMCIProduct without any other explicit JVMCI option
        test("-XX:-PrintWarnings",
            new Expectation("EnableJVMCI", "true", "default"),
            new Expectation("UseJVMCICompiler", "true", "default"));
        test("-XX:+UseJVMCICompiler",
            new Expectation("EnableJVMCI", "true", "default"),
            new Expectation("UseJVMCICompiler", "true", "command line"));
        test("-XX:-UseJVMCICompiler",
            new Expectation("EnableJVMCI", "true", "default"),
            new Expectation("UseJVMCICompiler", "false", "command line"));
        test("-XX:+EnableJVMCI",
            new Expectation("EnableJVMCI", "true", "command line"),
            new Expectation("UseJVMCICompiler", "true", "default"));
        test("-XX:-EnableJVMCI",
            new Expectation("EnableJVMCI", "false", "command line"),
            new Expectation("UseJVMCICompiler", "false", "default"));
        test("-XX:+EnableJVMCIProduct",
            new Expectation("EnableJVMCIProduct", "true", "command line"),
            new Expectation("EnableJVMCI", "true", "default"),
            new Expectation("UseJVMCICompiler", "true", "default"));
    }

    static void test(String explicitFlag, Expectation... expectations) throws Exception {
        ProcessBuilder pb = ProcessTools.createJavaProcessBuilder(
            "-XX:+UnlockExperimentalVMOptions", "-XX:+EnableJVMCIProduct", "-XX:-UnlockExperimentalVMOptions",
            explicitFlag,
            "-XX:+PrintFlagsFinal", "-version");
        OutputAnalyzer output = new OutputAnalyzer(pb.start());
        for (Expectation expectation : expectations) {
            output.stdoutShouldMatch(expectation.pattern);
        }
        if (output.getExitValue() != 0) {
            // This should only happen when JVMCI compilation is requested and the VM has no
            // JVMCI compiler (e.g. Graal is not included in the build)
            output.stdoutShouldMatch("No JVMCI compiler found");
        }
    }
}