jdk-24/hotspot/test/compiler/tiered/TieredLevelsTest.java

/*
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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 *
 * This code is free software; you can redistribute it and/or modify it
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 * 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.
 *
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/**
 * @test TieredLevelsTest
 * @library /testlibrary /../../test/lib /compiler/whitebox
 * @build TieredLevelsTest
 * @run main ClassFileInstaller sun.hotspot.WhiteBox
 *                              sun.hotspot.WhiteBox$WhiteBoxPermission
 * @run main/othervm -Xbootclasspath/a:. -XX:+TieredCompilation
 *                   -XX:+UnlockDiagnosticVMOptions -XX:+WhiteBoxAPI
 *                   -XX:CompileCommand=compileonly,SimpleTestCase$Helper::*
 *                   TieredLevelsTest
 * @summary Verify that all levels < 'TieredStopAtLevel' can be used
 * @author igor.ignatyev@oracle.com
 */
public class TieredLevelsTest extends CompLevelsTest {
    public static void main(String[] args) throws Exception {
        if (!TIERED_COMPILATION) {
            System.err.println("Test isn't applicable w/ disabled "
                    + "TieredCompilation. Skip test.");
            return;
        }
        CompilerWhiteBoxTest.main(TieredLevelsTest::new, args);
    }

    private TieredLevelsTest(TestCase testCase) {
        super(testCase);
        // to prevent inlining of #method
        WHITE_BOX.testSetDontInlineMethod(method, true);
    }

    @Override
    protected void test() throws Exception {
        if (skipXcompOSR()) {
          return;
        }
        checkNotCompiled();
        compile();
        checkCompiled();

        int compLevel = getCompLevel();
        if (compLevel > TIERED_STOP_AT_LEVEL) {
            throw new RuntimeException("method.compLevel[" + compLevel
                    + "] > TieredStopAtLevel [" + TIERED_STOP_AT_LEVEL + "]");
        }
        int bci = WHITE_BOX.getMethodEntryBci(method);
        deoptimize();

        for (int testedTier = 1; testedTier <= TIERED_STOP_AT_LEVEL;
                ++testedTier) {
            testAvailableLevel(testedTier, bci);
        }
        for (int testedTier = TIERED_STOP_AT_LEVEL + 1;
                testedTier <= COMP_LEVEL_MAX; ++testedTier) {
            testUnavailableLevel(testedTier, bci);
        }
    }


    @Override
    protected void checkLevel(int expected, int actual) {
        if (expected == COMP_LEVEL_FULL_PROFILE
                && actual == COMP_LEVEL_LIMITED_PROFILE) {
            // for simple method full_profile may be replaced by limited_profile
            return;
        }
        super.checkLevel(expected, actual);
   }
}