1 /* 2 * Copyright (c) 2015, 2015, 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.jtt.loop; 24 25 import org.junit.Test; 26 27 import org.graalvm.compiler.api.directives.GraalDirectives; 28 import org.graalvm.compiler.jtt.JTTTest; 29 30 /* 31 */ 32 public class LoopPhiResolutionTest extends JTTTest { 33 34 public static int test(int count) { 35 int i1 = 1; 36 int i2 = 2; 37 int i3 = 3; 38 int i4 = 4; 39 40 for (int i = 0; i < count; i++) { 41 i1 = wormhole(i1); 42 i2 = wormhole(i2); 43 i3 = wormhole(i2); 44 i4 = wormhole(i4); 45 } 46 return i1 + i2 * 10 + i3 * 100 + i4 * 1000; 47 } 48 49 private static int wormhole(int x) { 50 return (int) GraalDirectives.opaque((long) x); 51 } 52 53 @Test 54 public void run0() throws Throwable { 55 runTest("test", 0); 56 } 57 58 @Test 59 public void run1() throws Throwable { 60 runTest("test", 1); 61 } 62 63 @Test 64 public void run2() throws Throwable { 65 runTest("test", 10); 66 } 67 68 }