--- /dev/null 2017-01-22 10:16:57.869617664 -0800 +++ new/src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.core.test/src/org/graalvm/compiler/core/test/ShortCircuitNodeTest.java 2017-02-15 16:57:47.735488170 -0800 @@ -0,0 +1,65 @@ +/* + * 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 org.junit.Test; + +import org.graalvm.compiler.core.test.ea.EATestBase.TestClassInt; + +public class ShortCircuitNodeTest extends GraalCompilerTest { + + @Test + public void test1() { + // only executeActual, to avoid creating profiling information + executeActual(getResolvedJavaMethod("test1Snippet"), 1, 2); + } + + public static final TestClassInt field = null; + public static TestClassInt field2 = null; + + @SuppressWarnings("unused") + public static void test1Snippet(int a, int b) { + /* + * if a ShortCircuitOrNode is created for the check inside test2, then faulty handling of + * guards can create a cycle in the graph. + */ + int v; + if (a == 1) { + if (b != 1) { + int i = field.x; + } + field2 = null; + v = 0; + } else { + v = 1; + } + + if (test2(v, b)) { + int i = field.x; + } + } + + public static boolean test2(int a, int b) { + return a != 0 || b != 1; + } +}