1 /* 2 * Copyright (c) 2014, 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 package org.graalvm.compiler.core.test.ea; 24 25 import org.junit.Test; 26 27 import org.graalvm.compiler.core.test.GraalCompilerTest; 28 import org.graalvm.compiler.debug.Debug; 29 import org.graalvm.compiler.debug.Debug.Scope; 30 import org.graalvm.compiler.debug.DebugDumpScope; 31 import org.graalvm.compiler.graph.Node; 32 import org.graalvm.compiler.nodes.FrameState; 33 import org.graalvm.compiler.nodes.StructuredGraph; 34 import org.graalvm.compiler.nodes.StructuredGraph.AllowAssumptions; 35 import org.graalvm.compiler.nodes.java.AbstractNewObjectNode; 36 import org.graalvm.compiler.nodes.java.NewInstanceNode; 37 import org.graalvm.compiler.nodes.spi.LoweringTool; 38 import org.graalvm.compiler.phases.common.CanonicalizerPhase; 39 import org.graalvm.compiler.phases.common.LoweringPhase; 40 import org.graalvm.compiler.phases.common.inlining.InliningPhase; 41 import org.graalvm.compiler.phases.tiers.HighTierContext; 42 import org.graalvm.compiler.phases.tiers.PhaseContext; 43 44 /** 45 * Tests {@link AbstractNewObjectNode#simplify(org.graalvm.compiler.graph.spi.SimplifierTool)}. 46 * 47 */ 48 public class PoorMansEATest extends GraalCompilerTest { 49 public static class A { 50 public A obj; 51 } 52 53 public static A test1Snippet() { 54 A a = new A(); 55 a.obj = a; 56 return null; 57 } 58 59 @Test 60 public void test1() { 61 test("test1Snippet"); 62 } 63 64 @SuppressWarnings("try") 65 private void test(final String snippet) { 66 try (Scope s = Debug.scope("PoorMansEATest", new DebugDumpScope(snippet))) { 67 StructuredGraph graph = parseEager(snippet, AllowAssumptions.NO); 68 HighTierContext highTierContext = getDefaultHighTierContext(); 69 new InliningPhase(new CanonicalizerPhase()).apply(graph, highTierContext); 70 PhaseContext context = new PhaseContext(getProviders()); 71 new LoweringPhase(new CanonicalizerPhase(), LoweringTool.StandardLoweringStage.HIGH_TIER).apply(graph, context); 72 73 // remove framestates in order to trigger the simplification. 74 cleanup: for (FrameState fs : graph.getNodes(FrameState.TYPE).snapshot()) { 75 for (Node input : fs.inputs()) { 76 if (input instanceof NewInstanceNode) { 77 fs.replaceAtUsages(null); 78 fs.safeDelete(); 79 continue cleanup; 80 } 81 } 82 } 83 new CanonicalizerPhase().apply(graph, context); 84 } catch (Throwable e) { 85 throw Debug.handle(e); 86 } 87 } 88 }