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.graalvm.compiler.phases.tiers.PhaseContext; 34 import org.junit.Test; 35 36 public class PushThroughIfTest extends GraalCompilerTest { 37 38 public int field1; 39 public int field2; 40 41 public int testSnippet(boolean b) { 42 int i; 43 if (b) { 44 i = field1; 45 } else { 46 i = field1; 47 } 48 return i + field2; 49 } 50 51 @SuppressWarnings("unused") 52 public int referenceSnippet(boolean b) { 53 return field1 + field2; 54 } 55 56 @Test 57 public void test1() { 58 test("testSnippet", "referenceSnippet"); 59 } 60 61 private void test(String snippet, String reference) { 62 StructuredGraph graph = parseEager(snippet, AllowAssumptions.YES); 63 DebugContext debug = graph.getDebug(); 64 debug.dump(DebugContext.BASIC_LEVEL, graph, "Graph"); 65 for (FrameState fs : graph.getNodes(FrameState.TYPE).snapshot()) { 66 fs.replaceAtUsages(null); 67 GraphUtil.killWithUnusedFloatingInputs(fs); 68 } 69 new CanonicalizerPhase().apply(graph, new PhaseContext(getProviders())); 70 new CanonicalizerPhase().apply(graph, new PhaseContext(getProviders())); 71 72 StructuredGraph referenceGraph = parseEager(reference, AllowAssumptions.YES); 73 for (FrameState fs : referenceGraph.getNodes(FrameState.TYPE).snapshot()) { 74 fs.replaceAtUsages(null); 75 GraphUtil.killWithUnusedFloatingInputs(fs); 76 } 77 new CanonicalizerPhase().apply(referenceGraph, new PhaseContext(getProviders())); 78 assertEquals(referenceGraph, graph); 79 } 80 }