1 /* 2 * Copyright (c) 2011, 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.debug.DebugContext; 28 import org.graalvm.compiler.nodes.FrameState; 29 import org.graalvm.compiler.nodes.StructuredGraph; 30 import org.graalvm.compiler.nodes.StructuredGraph.AllowAssumptions; 31 import org.graalvm.compiler.nodes.util.GraphUtil; 32 import org.graalvm.compiler.phases.common.CanonicalizerPhase; 33 import org.junit.Test; 34 35 public class PushThroughIfTest extends GraalCompilerTest { 36 37 public int field1; 38 public int field2; 39 40 public int testSnippet(boolean b) { 41 int i; 42 if (b) { 43 i = field1; 44 } else { 45 i = field1; 46 } 47 return i + field2; 48 } 49 50 @SuppressWarnings("unused") 51 public int referenceSnippet(boolean b) { 52 return field1 + field2; 53 } 54 55 @Test 56 public void test1() { 57 test("testSnippet", "referenceSnippet"); 58 } 59 60 private void test(String snippet, String reference) { 61 StructuredGraph graph = parseEager(snippet, AllowAssumptions.YES); 62 DebugContext debug = graph.getDebug(); 63 debug.dump(DebugContext.BASIC_LEVEL, graph, "Graph"); 64 for (FrameState fs : graph.getNodes(FrameState.TYPE).snapshot()) { 65 fs.replaceAtUsages(null); 66 GraphUtil.killWithUnusedFloatingInputs(fs); 67 } 68 new CanonicalizerPhase().apply(graph, getProviders()); 69 new CanonicalizerPhase().apply(graph, getProviders()); 70 71 StructuredGraph referenceGraph = parseEager(reference, AllowAssumptions.YES); 72 for (FrameState fs : referenceGraph.getNodes(FrameState.TYPE).snapshot()) { 73 fs.replaceAtUsages(null); 74 GraphUtil.killWithUnusedFloatingInputs(fs); 75 } 76 new CanonicalizerPhase().apply(referenceGraph, getProviders()); 77 assertEquals(referenceGraph, graph); 78 } 79 }