1 /* 2 * Copyright (c) 2011, 2015, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. 8 * 9 * This code is distributed in the hope that it will be useful, but WITHOUT 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 12 * version 2 for more details (a copy is included in the LICENSE file that 13 * accompanied this code). 14 * 15 * You should have received a copy of the GNU General Public License version 16 * 2 along with this work; if not, write to the Free Software Foundation, 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 18 * 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20 * or visit www.oracle.com if you need additional information or have any 21 * questions. 22 */ 23 package org.graalvm.compiler.core.test; 24 25 import org.graalvm.compiler.debug.DebugContext; 26 import org.graalvm.compiler.debug.DebugDumpScope; 27 import org.graalvm.compiler.graph.Node; 28 import org.graalvm.compiler.nodes.ReturnNode; 29 import org.graalvm.compiler.nodes.StructuredGraph; 30 import org.graalvm.compiler.nodes.StructuredGraph.AllowAssumptions; 31 import org.graalvm.compiler.nodes.extended.MonitorExit; 32 import org.graalvm.compiler.nodes.memory.FloatingReadNode; 33 import org.graalvm.compiler.nodes.spi.LoweringTool; 34 import org.graalvm.compiler.phases.common.CanonicalizerPhase; 35 import org.graalvm.compiler.phases.common.FloatingReadPhase; 36 import org.graalvm.compiler.phases.common.LoweringPhase; 37 import org.graalvm.compiler.phases.tiers.PhaseContext; 38 import org.junit.Assert; 39 import org.junit.Test; 40 41 public class FloatingReadTest extends GraphScheduleTest { 42 43 public static class Container { 44 45 public int a; 46 } 47 48 public static void changeField(Container c) { 49 c.a = 0xcafebabe; 50 } 51 52 public static synchronized int test1Snippet() { 53 Container c = new Container(); 54 return c.a; 55 } 56 57 @Test 58 public void test1() { 59 test("test1Snippet"); 60 } 61 62 @SuppressWarnings("try") 63 private void test(final String snippet) { 64 DebugContext debug = getDebugContext(); 65 try (DebugContext.Scope s = debug.scope("FloatingReadTest", new DebugDumpScope(snippet))) { 66 67 StructuredGraph graph = parseEager(snippet, AllowAssumptions.YES); 68 PhaseContext context = new PhaseContext(getProviders()); 69 new LoweringPhase(new CanonicalizerPhase(), LoweringTool.StandardLoweringStage.HIGH_TIER).apply(graph, context); 70 new FloatingReadPhase().apply(graph); 71 72 ReturnNode returnNode = null; 73 MonitorExit monitorexit = null; 74 75 for (Node n : graph.getNodes()) { 76 if (n instanceof ReturnNode) { 77 assert returnNode == null; 78 returnNode = (ReturnNode) n; 79 } else if (n instanceof MonitorExit) { 80 monitorexit = (MonitorExit) n; 81 } 82 } 83 84 debug.dump(DebugContext.BASIC_LEVEL, graph, "After lowering"); 85 86 Assert.assertNotNull(returnNode); 87 Assert.assertNotNull(monitorexit); 88 Assert.assertTrue(returnNode.result() instanceof FloatingReadNode); 89 90 FloatingReadNode read = (FloatingReadNode) returnNode.result(); 91 92 assertOrderedAfterSchedule(graph, read, (Node) monitorexit); 93 } catch (Throwable e) { 94 throw debug.handle(e); 95 } 96 } 97 }