| /* |
| * 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.debug.Debug; |
| import org.graalvm.compiler.nodes.ReturnNode; |
| import org.graalvm.compiler.nodes.StructuredGraph; |
| import org.graalvm.compiler.nodes.StructuredGraph.AllowAssumptions; |
| import org.graalvm.compiler.phases.common.CanonicalizerPhase; |
| import org.graalvm.compiler.phases.tiers.PhaseContext; |
| |
| public class MergeCanonicalizerTest extends GraalCompilerTest { |
| |
| public static int staticField; |
| |
| private int field; |
| |
| @Test |
| public void testSplitReturn() { |
| test("testSplitReturnSnippet", 2); |
| testReturnCount("testSplitReturnSnippet", 2); |
| } |
| |
| public int testSplitReturnSnippet(int b) { |
| int v; |
| if (b < 0) { |
| staticField = 1; |
| v = 10; |
| } else { |
| staticField = 2; |
| v = 20; |
| } |
| int i = field; |
| i = field + i; |
| return v; |
| } |
| |
| private void testReturnCount(String snippet, int returnCount) { |
| StructuredGraph graph = parseEager(snippet, AllowAssumptions.YES); |
| new CanonicalizerPhase().apply(graph, new PhaseContext(getProviders())); |
| new CanonicalizerPhase().apply(graph, new PhaseContext(getProviders())); |
| Debug.dump(Debug.BASIC_LOG_LEVEL, graph, "Graph"); |
| assertDeepEquals(returnCount, graph.getNodes(ReturnNode.TYPE).count()); |
| } |
| } |