1 /* 2 * Copyright (c) 2009, 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 24 /** 25 * @test 26 * @bug 5057225 27 * @summary Remove useless I2L conversions 28 * @modules java.base/jdk.internal.misc 29 * @library /testlibrary 30 * @run main/othervm -Xcomp -XX:CompileOnly=Test5057225.doload Test5057225 31 */ 32 33 import jdk.test.lib.Utils; 34 35 public class Test5057225 { 36 static byte[] ba = new byte[] { -1 }; 37 static short[] sa = new short[] { -1 }; 38 static int[] ia = new int[] { -1 }; 39 40 static final long[] BYTE_MASKS = { 41 0x0FL, 42 0x7FL, // 7-bit 43 0xFFL, 44 }; 45 46 static final long[] SHORT_MASKS = { 47 0x000FL, 48 0x007FL, // 7-bit 49 0x00FFL, 50 0x0FFFL, 51 0x3FFFL, // 14-bit 52 0x7FFFL, // 15-bit 53 0xFFFFL, 54 }; 55 56 static final long[] INT_MASKS = { 57 0x0000000FL, 58 0x0000007FL, // 7-bit 59 0x000000FFL, 60 0x00000FFFL, 61 0x00003FFFL, // 14-bit 62 0x00007FFFL, // 15-bit 63 0x0000FFFFL, 64 0x00FFFFFFL, 65 0x7FFFFFFFL, // 31-bit 66 0xFFFFFFFFL, 67 }; 68 69 public static void main(String[] args) throws Exception { 70 for (int i = 0; i < BYTE_MASKS.length; i++) { 71 System.setProperty("value", "" + BYTE_MASKS[i]); 72 loadAndRunClass("Test5057225$loadUB2L"); 73 } 74 75 for (int i = 0; i < SHORT_MASKS.length; i++) { 76 System.setProperty("value", "" + SHORT_MASKS[i]); 77 loadAndRunClass("Test5057225$loadUS2L"); 78 } 79 80 for (int i = 0; i < INT_MASKS.length; i++) { 81 System.setProperty("value", "" + INT_MASKS[i]); 82 loadAndRunClass("Test5057225$loadUI2L"); 83 } 84 } 85 86 static void check(long result, long expected) { 87 if (result != expected) 88 throw new InternalError(result + " != " + expected); 89 } 90 91 static void loadAndRunClass(String classname) throws Exception { 92 Class cl = Class.forName(classname); 93 ClassLoader apploader = cl.getClassLoader(); 94 ClassLoader loader 95 = Utils.getTestClassPathURLClassLoader(apploader.getParent()); 96 Class c = loader.loadClass(classname); 97 Runnable r = (Runnable) c.newInstance(); 98 r.run(); 99 } 100 101 public static class loadUB2L implements Runnable { 102 static final long MASK; 103 static { 104 long value = 0; 105 try { 106 value = Long.decode(System.getProperty("value")); 107 } catch (Throwable e) {} 108 MASK = value; 109 } 110 111 public void run() { check(doload(ba), MASK); } 112 static long doload(byte[] ba) { return ba[0] & MASK; } 113 } 114 115 public static class loadUS2L implements Runnable { 116 static final long MASK; 117 static { 118 long value = 0; 119 try { 120 value = Long.decode(System.getProperty("value")); 121 } catch (Throwable e) {} 122 MASK = value; 123 } 124 125 public void run() { check(doload(sa), MASK); } 126 static long doload(short[] sa) { return sa[0] & MASK; } 127 } 128 129 public static class loadUI2L implements Runnable { 130 static final long MASK; 131 static { 132 long value = 0; 133 try { 134 value = Long.decode(System.getProperty("value")); 135 } catch (Throwable e) {} 136 MASK = value; 137 } 138 139 public void run() { check(doload(ia), MASK); } 140 static long doload(int[] ia) { return ia[0] & MASK; } 141 } 142 }