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/*
* 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; }
}
}
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