1 /* 2 * Copyright (c) 2009, 2012, 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.optimize; 24 25 import org.junit.Test; 26 27 import org.graalvm.compiler.jtt.JTTTest; 28 29 /* 30 * Tests optimization of integer operations. 31 */ 32 public class VN_Long02 extends JTTTest { 33 34 public static long test(int arg) { 35 if (arg == 0) { 36 return shift0(arg + 10); 37 } 38 if (arg == 1) { 39 return shift1(arg + 10); 40 } 41 if (arg == 2) { 42 return shift2(arg + 10); 43 } 44 return 0; 45 } 46 47 public static long shift0(long x) { 48 long c = 1; 49 long t = x >> c; 50 long u = x >> c; 51 return t + u; 52 } 53 54 public static long shift1(long x) { 55 long c = 1; 56 long t = x >>> c; 57 long u = x >>> c; 58 return t + u; 59 } 60 61 public static long shift2(long x) { 62 long c = 1; 63 long t = x << c; 64 long u = x << c; 65 return t + u; 66 } 67 68 @Test 69 public void run0() throws Throwable { 70 runTest("test", 0); 71 } 72 73 @Test 74 public void run1() throws Throwable { 75 runTest("test", 1); 76 } 77 78 @Test 79 public void run2() throws Throwable { 80 runTest("test", 2); 81 } 82 83 }