| /* |
| * Copyright (c) 2009, 2016, Oracle and/or its affiliates. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. |
| * |
| * This code is distributed in the hope that it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| */ |
| |
| /** |
| * @test |
| * @bug 5057225 |
| * @summary Remove useless I2L conversions |
| * @modules java.base/jdk.internal.misc |
| * @library /test/lib |
| * |
| * @run main/othervm -Xcomp |
| * -XX:CompileCommand=compileonly,compiler.c2.Test5057225::doload |
| * compiler.c2.Test5057225 |
| */ |
| |
| package compiler.c2; |
| import jdk.test.lib.Utils; |
| |
| public class Test5057225 { |
| static byte[] ba = new byte[] { -1 }; |
| static short[] sa = new short[] { -1 }; |
| static int[] ia = new int[] { -1 }; |
| |
| static final long[] BYTE_MASKS = { |
| 0x0FL, |
| 0x7FL, // 7-bit |
| 0xFFL, |
| }; |
| |
| static final long[] SHORT_MASKS = { |
| 0x000FL, |
| 0x007FL, // 7-bit |
| 0x00FFL, |
| 0x0FFFL, |
| 0x3FFFL, // 14-bit |
| 0x7FFFL, // 15-bit |
| 0xFFFFL, |
| }; |
| |
| static final long[] INT_MASKS = { |
| 0x0000000FL, |
| 0x0000007FL, // 7-bit |
| 0x000000FFL, |
| 0x00000FFFL, |
| 0x00003FFFL, // 14-bit |
| 0x00007FFFL, // 15-bit |
| 0x0000FFFFL, |
| 0x00FFFFFFL, |
| 0x7FFFFFFFL, // 31-bit |
| 0xFFFFFFFFL, |
| }; |
| |
| public static void main(String[] args) throws Exception { |
| for (int i = 0; i < BYTE_MASKS.length; i++) { |
| System.setProperty("value", "" + BYTE_MASKS[i]); |
| loadAndRunClass(Test5057225.class.getName() + "$loadUB2L"); |
| } |
| |
| for (int i = 0; i < SHORT_MASKS.length; i++) { |
| System.setProperty("value", "" + SHORT_MASKS[i]); |
| loadAndRunClass(Test5057225.class.getName() + "$loadUS2L"); |
| } |
| |
| for (int i = 0; i < INT_MASKS.length; i++) { |
| System.setProperty("value", "" + INT_MASKS[i]); |
| loadAndRunClass(Test5057225.class.getName() + "$loadUI2L"); |
| } |
| } |
| |
| static void check(long result, long expected) { |
| if (result != expected) |
| throw new InternalError(result + " != " + expected); |
| } |
| |
| static void loadAndRunClass(String classname) throws Exception { |
| Class cl = Class.forName(classname); |
| ClassLoader apploader = cl.getClassLoader(); |
| ClassLoader loader |
| = Utils.getTestClassPathURLClassLoader(apploader.getParent()); |
| Class c = loader.loadClass(classname); |
| Runnable r = (Runnable) c.newInstance(); |
| r.run(); |
| } |
| |
| public static class loadUB2L implements Runnable { |
| static final long MASK; |
| static { |
| long value = 0; |
| try { |
| value = Long.decode(System.getProperty("value")); |
| } catch (Throwable e) {} |
| MASK = value; |
| } |
| |
| public void run() { check(doload(ba), MASK); } |
| static long doload(byte[] ba) { return ba[0] & MASK; } |
| } |
| |
| public static class loadUS2L implements Runnable { |
| static final long MASK; |
| static { |
| long value = 0; |
| try { |
| value = Long.decode(System.getProperty("value")); |
| } catch (Throwable e) {} |
| MASK = value; |
| } |
| |
| public void run() { check(doload(sa), MASK); } |
| static long doload(short[] sa) { return sa[0] & MASK; } |
| } |
| |
| public static class loadUI2L implements Runnable { |
| static final long MASK; |
| static { |
| long value = 0; |
| try { |
| value = Long.decode(System.getProperty("value")); |
| } catch (Throwable e) {} |
| MASK = value; |
| } |
| |
| public void run() { check(doload(ia), MASK); } |
| static long doload(int[] ia) { return ia[0] & MASK; } |
| } |
| } |