java-topology/test/hotspot/jtreg/compiler/c2/irTests/TestContinuationPinningAndEA.java

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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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/*
 * @test
 * @requires vm.continuations
 * @bug 8347997
 * @library /test/lib /
 * @summary Test that Continuation.pin() and unpin() intrinsics work with EA.
 * @modules java.base/jdk.internal.vm
 * @run driver compiler.c2.irTests.TestContinuationPinningAndEA
 */

package compiler.c2.irTests;

import compiler.lib.ir_framework.*;
import jdk.internal.vm.Continuation;

public class TestContinuationPinningAndEA {
    public static void main(String[] args) {
        TestFramework.runWithFlags("--add-modules", "java.base", "--add-exports", "java.base/jdk.internal.vm=ALL-UNNAMED");
    }

    @Run(test = {
            "test_AllocPinUnpin", "test_PinUnpinAlloc",
            "test_AllocPinUnpinNoInline", "test_PinUnpinAllocNoInline",
    })
    public void runMethod() {
        test_AllocPinUnpin();
        test_PinUnpinAlloc();
        test_AllocPinUnpinNoInline();
        test_PinUnpinAllocNoInline();
    }

    // ===Cases where allocations are removed===
    static class AllocPinUnpin {
        final Object o;

        @ForceInline
        public AllocPinUnpin() {
            o = new Object();
            Continuation.pin();
            Continuation.unpin();
        }
    }

    static class PinUnpinAlloc {
        final Object o;

        @ForceInline
        public PinUnpinAlloc() {
            Continuation.pin();
            Continuation.unpin();
            o = new Object();
        }
    }

    @Test
    @IR(failOn = {IRNode.ALLOC})
    void test_AllocPinUnpin() {
        new AllocPinUnpin();
    }

    @Test
    @IR(failOn = {IRNode.ALLOC})
    void test_PinUnpinAlloc() {
        new PinUnpinAlloc();
    }

    // ===Sanity check that allocations would happen===
    static class AllocPinUnpinNoInline {
        final Object o;

        @DontInline
        public AllocPinUnpinNoInline() {
            o = new Object();
            Continuation.pin();
            Continuation.unpin();
        }
    }

    static class PinUnpinAllocNoInline {
        final Object o;

        @DontInline
        public PinUnpinAllocNoInline() {
            Continuation.pin();
            Continuation.unpin();
            o = new Object();
        }
    }

    @Test
    @IR(counts = {IRNode.ALLOC, ">0"})
    void test_AllocPinUnpinNoInline() {
        new AllocPinUnpinNoInline();
    }

    @Test
    @IR(counts = {IRNode.ALLOC, ">0"})
    void test_PinUnpinAllocNoInline() {
        new PinUnpinAllocNoInline();
    }
}