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/*
* Copyright (c) 2024 Red Hat 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.gcbarriers;
import compiler.lib.ir_framework.CompilePhase;
import compiler.lib.ir_framework.DontInline;
import compiler.lib.ir_framework.IR;
import compiler.lib.ir_framework.IRNode;
import compiler.lib.ir_framework.Test;
import compiler.lib.ir_framework.TestFramework;
/**
* @test
* @bug 8231569
* @summary Test that Shenandoah barriers are expanded correctly
* @library /test/lib /
* @requires vm.gc.Shenandoah
* @run main compiler.gcbarriers.TestShenandoahBarrierExpansion
*/
public class TestShenandoahBarrierExpansion {
public static void main(String[] args) {
TestFramework test = new TestFramework(TestShenandoahBarrierExpansion.class);
test.addFlags("-XX:+UseShenandoahGC");
test.start();
}
private static Object staticField;
@Test
@IR(failOn = IRNode.IF, phase = CompilePhase.AFTER_PARSING)
@IR(counts = { IRNode.IF, "2" }, phase = CompilePhase.BARRIER_EXPANSION)
public Object testLoadFieldObject() {
return staticField;
}
private static A staticField2 = new A();
@Test
@IR(counts = { IRNode.IF, "1" }, phase = CompilePhase.AFTER_PARSING)
@IR(counts = { IRNode.IF, "3" }, phase = CompilePhase.BARRIER_EXPANSION)
private static int testLoadObjectFieldWithNullCheck() {
return staticField2.intField;
}
private static A staticField3 = new A();
@Test
@IR(counts = { IRNode.IF, "2" }, phase = CompilePhase.AFTER_PARSING)
@IR(counts = { IRNode.IF, "6" }, phase = CompilePhase.BARRIER_EXPANSION)
private static int testLoadTwoObjectFieldsWithNullCheck() {
return staticField2.intField + staticField3.intField;
}
@Test
@IR(failOn = IRNode.IF, phase = CompilePhase.AFTER_PARSING)
@IR(counts = { IRNode.IF, "4" }, phase = CompilePhase.BARRIER_EXPANSION)
private static void testLoadTwoFieldObjectAndEscape() {
final A field2 = staticField2;
final A field3 = staticField3;
notInlined(field2, field3);
}
@DontInline
private static void notInlined(A field2, A field3) {
// noop
}
private static class A {
public int intField;
}
}
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