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 Reduce_LongShift02 extends JTTTest {
  33 
  34     public static long test(long arg) {
  35         if (arg == 0) {
  36             return shift0(arg + 80);
  37         }
  38         if (arg == 1) {
  39             return shift1(arg + 0x800000000000000aL);
  40         }
  41         if (arg == 2) {
  42             return shift2(arg + 192);
  43         }
  44         if (arg == 3) {
  45             return shift3(arg + 208);
  46         }
  47         if (arg == 4) {
  48             return shift4(arg);
  49         }
  50         return 0;
  51     }
  52 
  53     public static long shift0(long x) {
  54         return x >>> 3 << 3;
  55     }
  56 
  57     public static long shift1(long x) {
  58         return x << 3 >>> 3;
  59     }
  60 
  61     public static long shift2(long x) {
  62         return x >> 3 >> 1;
  63     }
  64 
  65     public static long shift3(long x) {
  66         return x >>> 3 >>> 1;
  67     }
  68 
  69     public static long shift4(long x) {
  70         return x << 3 << 1;
  71     }
  72 
  73     @Test
  74     public void run0() throws Throwable {
  75         runTest("test", 0L);
  76     }
  77 
  78     @Test
  79     public void run1() throws Throwable {
  80         runTest("test", 1L);
  81     }
  82 
  83     @Test
  84     public void run2() throws Throwable {
  85         runTest("test", 2L);
  86     }
  87 
  88     @Test
  89     public void run3() throws Throwable {
  90         runTest("test", 3L);
  91     }
  92 
  93     @Test
  94     public void run4() throws Throwable {
  95         runTest("test", 4L);
  96     }
  97 
  98 }