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test/compiler/6800154/Test6800154.java@f90c822e73f8 (annotated)

test/compiler/6800154/Test6800154.java

Wed, 27 Apr 2016 01:25:04 +0800

author

aoqi

date

Wed, 27 Apr 2016 01:25:04 +0800

changeset 0

f90c822e73f8

child 6876

710a3c8b516e

permissions

-rw-r--r--

Initial load
http://hg.openjdk.java.net/jdk8u/jdk8u/hotspot/
changeset: 6782:28b50d07f6f8
tag: jdk8u25-b17

aoqi@0	1	/*
aoqi@0	2	* Copyright (c) 2009, Oracle and/or its affiliates. All rights reserved.
aoqi@0	3	* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
aoqi@0	4	*
aoqi@0	5	* This code is free software; you can redistribute it and/or modify it
aoqi@0	6	* under the terms of the GNU General Public License version 2 only, as
aoqi@0	7	* published by the Free Software Foundation.
aoqi@0	8	*
aoqi@0	9	* This code is distributed in the hope that it will be useful, but WITHOUT
aoqi@0	10	* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
aoqi@0	11	* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
aoqi@0	12	* version 2 for more details (a copy is included in the LICENSE file that
aoqi@0	13	* accompanied this code).
aoqi@0	14	*
aoqi@0	15	* You should have received a copy of the GNU General Public License version
aoqi@0	16	* 2 along with this work; if not, write to the Free Software Foundation,
aoqi@0	17	* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
aoqi@0	18	*
aoqi@0	19	* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
aoqi@0	20	* or visit www.oracle.com if you need additional information or have any
aoqi@0	21	* questions.
aoqi@0	22	*/
aoqi@0	23
aoqi@0	24	/**
aoqi@0	25	* @test
aoqi@0	26	* @bug 6800154
aoqi@0	27	* @summary Add comments to long_by_long_mulhi() for better understandability
aoqi@0	28	*
aoqi@0	29	* @run main/othervm -Xcomp -XX:CompileOnly=Test6800154.divcomp Test6800154
aoqi@0	30	*/
aoqi@0	31
aoqi@0	32	import java.net.URLClassLoader;
aoqi@0	33
aoqi@0	34	public class Test6800154 implements Runnable {
aoqi@0	35	static final long[] DIVIDENDS = {
aoqi@0	36	0,
aoqi@0	37	1,
aoqi@0	38	2,
aoqi@0	39	1423487,
aoqi@0	40	4444441,
aoqi@0	41	4918923241323L,
aoqi@0	42	-1,
aoqi@0	43	-24351,
aoqi@0	44	0x3333,
aoqi@0	45	0x0000000080000000L,
aoqi@0	46	0x7fffffffffffffffL,
aoqi@0	47	0x8000000000000000L
aoqi@0	48	};
aoqi@0	49
aoqi@0	50	static final long[] DIVISORS = {
aoqi@0	51	1,
aoqi@0	52	2,
aoqi@0	53	17,
aoqi@0	54	12342,
aoqi@0	55	24123,
aoqi@0	56	143444,
aoqi@0	57	123444442344L,
aoqi@0	58	-1,
aoqi@0	59	-2,
aoqi@0	60	-4423423234231423L,
aoqi@0	61	0x0000000080000000L,
aoqi@0	62	0x7fffffffffffffffL,
aoqi@0	63	0x8000000000000000L
aoqi@0	64	};
aoqi@0	65
aoqi@0	66	// Initialize DIVISOR so that it is final in this class.
aoqi@0	67	static final long DIVISOR;
aoqi@0	68
aoqi@0	69	static {
aoqi@0	70	long value = 0;
aoqi@0	71	try {
aoqi@0	72	value = Long.decode(System.getProperty("divisor"));
aoqi@0	73	} catch (Throwable e) {
aoqi@0	74	}
aoqi@0	75	DIVISOR = value;
aoqi@0	76	}
aoqi@0	77
aoqi@0	78	public static void main(String[] args) throws Exception
aoqi@0	79	{
aoqi@0	80	Class cl = Class.forName("Test6800154");
aoqi@0	81	URLClassLoader apploader = (URLClassLoader) cl.getClassLoader();
aoqi@0	82
aoqi@0	83	// Iterate over all divisors.
aoqi@0	84	for (int i = 0; i < DIVISORS.length; i++) {
aoqi@0	85	System.setProperty("divisor", "" + DIVISORS[i]);
aoqi@0	86	ClassLoader loader = new URLClassLoader(apploader.getURLs(), apploader.getParent());
aoqi@0	87	Class c = loader.loadClass("Test6800154");
aoqi@0	88	Runnable r = (Runnable) c.newInstance();
aoqi@0	89	r.run();
aoqi@0	90	}
aoqi@0	91	}
aoqi@0	92
aoqi@0	93	public void run()
aoqi@0	94	{
aoqi@0	95	// Iterate over all dividends.
aoqi@0	96	for (int i = 0; i < DIVIDENDS.length; i++) {
aoqi@0	97	long dividend = DIVIDENDS[i];
aoqi@0	98
aoqi@0	99	long expected = divint(dividend);
aoqi@0	100	long result = divcomp(dividend);
aoqi@0	101
aoqi@0	102	if (result != expected)
aoqi@0	103	throw new InternalError(dividend + " / " + DIVISOR + " failed: " + result + " != " + expected);
aoqi@0	104	}
aoqi@0	105	}
aoqi@0	106
aoqi@0	107	static long divint(long a) { return a / DIVISOR; }
aoqi@0	108	static long divcomp(long a) { return a / DIVISOR; }
aoqi@0	109	}