Mercurial > hg > graal-compiler
view test/compiler/5057225/Test5057225.java @ 19143:f10ca512eb40
Merge with cd49455040c1d57d8ab74473b3786ecc4f663060
author | Michael Van De Vanter <michael.van.de.vanter@oracle.com> |
---|---|
date | Wed, 04 Feb 2015 16:38:09 -0800 |
parents | c18cbe5936b8 |
children |
line wrap: on
line source
/* * Copyright (c) 2009, 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 * * @run main/othervm -Xcomp -XX:CompileOnly=Test5057225.doload Test5057225 */ import java.net.URLClassLoader; 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$loadUB2L"); } for (int i = 0; i < SHORT_MASKS.length; i++) { System.setProperty("value", "" + SHORT_MASKS[i]); loadAndRunClass("Test5057225$loadUS2L"); } for (int i = 0; i < INT_MASKS.length; i++) { System.setProperty("value", "" + INT_MASKS[i]); loadAndRunClass("Test5057225$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); URLClassLoader apploader = (URLClassLoader) cl.getClassLoader(); ClassLoader loader = new URLClassLoader(apploader.getURLs(), 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; } } }