hotspot/test/runtime/SharedArchiveFile/TestInterpreterMethodEntries.java

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/**
 * @test InterpreterMethodEntries
 * @requires vm.cds
 * @bug 8169711
 * @summary Test interpreter method entries for intrinsics with CDS (class data sharing)
 *          and different settings of the intrinsic flag during dump/use of the archive.
 * @requires (vm.opt.UseCompressedOops == null) | (vm.opt.UseCompressedOops == true)
 * @library /test/lib
 * @modules java.base/jdk.internal.misc
 *          java.management
 * @run main TestInterpreterMethodEntries
 */

import java.lang.Math;
import java.util.zip.CRC32;
import java.util.zip.CRC32C;
import jdk.test.lib.cds.CDSOptions;
import jdk.test.lib.cds.CDSTestUtils;
import jdk.test.lib.process.OutputAnalyzer;

public class TestInterpreterMethodEntries {

    public static void main(String[] args) throws Exception {
        if (args.length == 0) {
          // Dump and use shared archive with different flag combinations
          dumpAndUseSharedArchive("+", "-");
          dumpAndUseSharedArchive("-", "+");
        } else {
          // Call intrinsified java.lang.Math::fma()
          Math.fma(1.0, 2.0, 3.0);

          byte[] buffer = new byte[256];
          // Call intrinsified java.util.zip.CRC32::update()
          CRC32 crc32 = new CRC32();
          crc32.update(buffer, 0, 256);

          // Call intrinsified java.util.zip.CRC32C::updateBytes(..)
          CRC32C crc32c = new CRC32C();
          crc32c.update(buffer, 0, 256);
        }
    }

    private static void dumpAndUseSharedArchive(String dump, String use) throws Exception {
        String unlock     = "-XX:+UnlockDiagnosticVMOptions";

        String dumpFMA    = "-XX:" + dump + "UseFMA";
        String dumpCRC32  = "-XX:" + dump + "UseCRC32Intrinsics";
        String dumpCRC32C = "-XX:" + dump + "UseCRC32CIntrinsics";
        String useFMA     = "-XX:" + use  + "UseFMA";
        String useCRC32   = "-XX:" + use  + "UseCRC32Intrinsics";
        String useCRC32C  = "-XX:" + use  + "UseCRC32CIntrinsics";

        CDSTestUtils.createArchiveAndCheck(unlock, dumpFMA, dumpCRC32, dumpCRC32C);

        CDSOptions opts = (new CDSOptions())
            .addPrefix(unlock, useFMA, useCRC32, useCRC32C, "-showversion")
            .addSuffix("TestInterpreterMethodEntries", "run")
            .setUseVersion(false);
        CDSTestUtils.runWithArchiveAndCheck(opts);
    }
}