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