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test/compiler/6805724/Test6805724.java@f90c822e73f8 (annotated)

test/compiler/6805724/Test6805724.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 6805724
aoqi@0	27	* @summary ModLNode::Ideal() generates functionally incorrect graph when divisor is any (2^k-1) constant.
aoqi@0	28	*
aoqi@0	29	* @run main/othervm -Xcomp -XX:CompileOnly=Test6805724.fcomp Test6805724
aoqi@0	30	*/
aoqi@0	31
aoqi@0	32	import java.net.URLClassLoader;
aoqi@0	33
aoqi@0	34	public class Test6805724 implements Runnable {
aoqi@0	35	// Initialize DIVISOR so that it is final in this class.
aoqi@0	36	static final long DIVISOR; // 2^k-1 constant
aoqi@0	37
aoqi@0	38	static {
aoqi@0	39	long value = 0;
aoqi@0	40	try {
aoqi@0	41	value = Long.decode(System.getProperty("divisor"));
aoqi@0	42	} catch (Throwable t) {
aoqi@0	43	// This one is required for the Class.forName() in main.
aoqi@0	44	}
aoqi@0	45	DIVISOR = value;
aoqi@0	46	}
aoqi@0	47
aoqi@0	48	static long fint(long x) {
aoqi@0	49	return x % DIVISOR;
aoqi@0	50	}
aoqi@0	51
aoqi@0	52	static long fcomp(long x) {
aoqi@0	53	return x % DIVISOR;
aoqi@0	54	}
aoqi@0	55
aoqi@0	56	public void run() {
aoqi@0	57	long a = 0x617981E1L;
aoqi@0	58
aoqi@0	59	long expected = fint(a);
aoqi@0	60	long result = fcomp(a);
aoqi@0	61
aoqi@0	62	if (result != expected)
aoqi@0	63	throw new InternalError(result + " != " + expected);
aoqi@0	64	}
aoqi@0	65
aoqi@0	66	public static void main(String args[]) throws Exception {
aoqi@0	67	Class cl = Class.forName("Test6805724");
aoqi@0	68	URLClassLoader apploader = (URLClassLoader) cl.getClassLoader();
aoqi@0	69
aoqi@0	70	// Iterate over all 2^k-1 divisors.
aoqi@0	71	for (int k = 1; k < Long.SIZE; k++) {
aoqi@0	72	long divisor = (1L << k) - 1;
aoqi@0	73	System.setProperty("divisor", "" + divisor);
aoqi@0	74	ClassLoader loader = new URLClassLoader(apploader.getURLs(), apploader.getParent());
aoqi@0	75	Class c = loader.loadClass("Test6805724");
aoqi@0	76	Runnable r = (Runnable) c.newInstance();
aoqi@0	77	r.run();
aoqi@0	78	}
aoqi@0	79	}
aoqi@0	80	}