1 /* 2 * Copyright (c) 2015, 2018, 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 24 25 package org.graalvm.compiler.core.test; 26 27 import org.graalvm.compiler.api.directives.GraalDirectives; 28 import org.junit.Test; 29 30 public class ConditionalEliminationTest12 extends ConditionalEliminationTestBase { 31 32 static class A { 33 34 } 35 36 static class B extends A { 37 38 } 39 40 static class C extends B { 41 42 } 43 44 static class D extends C { 45 46 } 47 48 @SuppressWarnings({"static-method", "unused"}) 49 private int referenceMethod(Object a) { 50 if (a instanceof A) { 51 if (a instanceof C) { 52 return 1; 53 } else { 54 GraalDirectives.deoptimizeAndInvalidate(); 55 } 56 } 57 return 0; 58 } 59 60 @SuppressWarnings({"static-method", "unused"}) 61 private int testMethod(Object a) { 62 if (a instanceof A) { 63 if (a instanceof C) { 64 if (a instanceof B) { 65 B b = (B) a; 66 if (b instanceof C) { 67 return 1; 68 } else { 69 GraalDirectives.deoptimizeAndInvalidate(); 70 } 71 } 72 } else { 73 GraalDirectives.deoptimizeAndInvalidate(); 74 } 75 } 76 return 0; 77 } 78 79 @SuppressWarnings("unused") 80 @Test 81 public void testFloatingGuards() { 82 // Make sure class D is loaded. 83 D d = new D(); 84 testConditionalElimination("testMethod", "referenceMethod"); 85 } 86 }