1 /* 2 * Copyright (c) 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 jdk.vm.ci.meta.Assumptions.Assumption; 26 import jdk.vm.ci.meta.Assumptions.ConcreteSubtype; 27 28 import org.junit.Test; 29 30 import org.graalvm.compiler.nodes.StructuredGraph; 31 32 /** 33 * Ensure that abstract classes with a single implementor are properly optimized and that loading a 34 * subclass below the leaf type triggers invalidation. 35 */ 36 public class ConcreteSubtypeTest extends GraalCompilerAssumptionsTest { 37 abstract static class AbstractBase { 38 abstract void check(); 39 } 40 41 static class Subclass extends AbstractBase { 42 @Override 43 public void check() { 44 throw new InternalError(); 45 } 46 } 47 48 static class SubSubclass extends Subclass { 49 @Override 50 public void check() { 51 } 52 } 53 54 public void callAbstractType(AbstractBase object) { 55 object.check(); 56 } 57 58 @Override 59 protected void checkGraph(Assumption expectedAssumption, StructuredGraph graph) { 60 super.checkGraph(expectedAssumption, graph); 61 assertTrue(graph.isTrivial()); 62 } 63 64 /** 65 * Test that {@link #callAbstractType} gets compiled into an empty method with a 66 * {@link ConcreteSubtype} assumption on {@link AbstractBase} and {@link Subclass}. Then ensures 67 * that loading and initialization of {@link SubSubclass} causes the compiled method to be 68 * invalidated. 69 */ 70 @Test 71 public void testLeafAbstractType() { 72 testAssumptionInvalidate("callAbstractType", new ConcreteSubtype(resolveAndInitialize(AbstractBase.class), resolveAndInitialize(Subclass.class)), "SubSubclass"); 73 } 74 }