| /* |
| * Copyright (c) 2011, Oracle 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 org.graalvm.compiler.core.test; |
| |
| import jdk.vm.ci.meta.ResolvedJavaMethod; |
| |
| import org.junit.Test; |
| |
| import org.graalvm.compiler.nodes.StructuredGraph; |
| import org.graalvm.compiler.nodes.StructuredGraph.AllowAssumptions; |
| import org.graalvm.compiler.nodes.java.MonitorExitNode; |
| import org.graalvm.compiler.nodes.java.RawMonitorEnterNode; |
| import org.graalvm.compiler.nodes.spi.LoweringTool; |
| import org.graalvm.compiler.phases.common.CanonicalizerPhase; |
| import org.graalvm.compiler.phases.common.DeadCodeEliminationPhase; |
| import org.graalvm.compiler.phases.common.LockEliminationPhase; |
| import org.graalvm.compiler.phases.common.LoweringPhase; |
| import org.graalvm.compiler.phases.common.ValueAnchorCleanupPhase; |
| import org.graalvm.compiler.phases.common.inlining.InliningPhase; |
| import org.graalvm.compiler.phases.tiers.HighTierContext; |
| import org.graalvm.compiler.phases.tiers.PhaseContext; |
| |
| public class LockEliminationTest extends GraalCompilerTest { |
| |
| static class A { |
| |
| int value; |
| |
| public synchronized int getValue() { |
| return value; |
| } |
| } |
| |
| static int field1; |
| static int field2; |
| |
| public static void testSynchronizedSnippet(A x, A y) { |
| synchronized (x) { |
| field1 = x.value; |
| } |
| synchronized (x) { |
| field2 = y.value; |
| } |
| } |
| |
| @Test |
| public void testLock() { |
| test("testSynchronizedSnippet", new A(), new A()); |
| |
| StructuredGraph graph = getGraph("testSynchronizedSnippet"); |
| new CanonicalizerPhase().apply(graph, new PhaseContext(getProviders())); |
| new LockEliminationPhase().apply(graph); |
| assertDeepEquals(1, graph.getNodes().filter(RawMonitorEnterNode.class).count()); |
| assertDeepEquals(1, graph.getNodes().filter(MonitorExitNode.class).count()); |
| } |
| |
| public static void testSynchronizedMethodSnippet(A x) { |
| int value1 = x.getValue(); |
| int value2 = x.getValue(); |
| field1 = value1; |
| field2 = value2; |
| } |
| |
| @Test |
| public void testSynchronizedMethod() { |
| test("testSynchronizedMethodSnippet", new A()); |
| |
| StructuredGraph graph = getGraph("testSynchronizedMethodSnippet"); |
| new CanonicalizerPhase().apply(graph, new PhaseContext(getProviders())); |
| new LockEliminationPhase().apply(graph); |
| assertDeepEquals(1, graph.getNodes().filter(RawMonitorEnterNode.class).count()); |
| assertDeepEquals(1, graph.getNodes().filter(MonitorExitNode.class).count()); |
| } |
| |
| private StructuredGraph getGraph(String snippet) { |
| ResolvedJavaMethod method = getResolvedJavaMethod(snippet); |
| StructuredGraph graph = parseEager(method, AllowAssumptions.YES); |
| HighTierContext context = getDefaultHighTierContext(); |
| new CanonicalizerPhase().apply(graph, context); |
| new InliningPhase(new CanonicalizerPhase()).apply(graph, context); |
| new CanonicalizerPhase().apply(graph, context); |
| new DeadCodeEliminationPhase().apply(graph); |
| new LoweringPhase(new CanonicalizerPhase(), LoweringTool.StandardLoweringStage.HIGH_TIER).apply(graph, context); |
| new ValueAnchorCleanupPhase().apply(graph); |
| new LockEliminationPhase().apply(graph); |
| return graph; |
| } |
| |
| } |