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.ea;
  26 
  27 import org.junit.Test;
  28 
  29 import org.graalvm.compiler.nodes.ParameterNode;
  30 import org.graalvm.compiler.nodes.PhiNode;
  31 import org.graalvm.compiler.nodes.ValuePhiNode;
  32 
  33 public class EAMergingTest extends EATestBase {
  34 
  35     @Test
  36     public void testSimpleMerge() {
  37         testEscapeAnalysis("simpleMergeSnippet", null, false);
  38         assertDeepEquals(1, returnNodes.size());
  39         assertTrue(returnNodes.get(0).result() instanceof ValuePhiNode);
  40         PhiNode phi = (PhiNode) returnNodes.get(0).result();
  41         assertTrue(phi.valueAt(0) instanceof ParameterNode);
  42         assertTrue(phi.valueAt(1) instanceof ParameterNode);
  43     }
  44 
  45     public static int simpleMergeSnippet(boolean b, int u, int v) {
  46         TestClassInt obj;
  47         if (b) {
  48             obj = new TestClassInt(u, 0);
  49             notInlineable();
  50         } else {
  51             obj = new TestClassInt(v, 0);
  52             notInlineable();
  53         }
  54         return obj.x;
  55     }
  56 }