5091921: Sign flip issues in loop optimizer
Summary: Fix integer overflow problem in the code generated by loop optimizer.
Reviewed-by: never
/*
* Copyright (c) 2011, 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 6850611
* @summary int / long arithmetic seems to be broken in 1.6.0_14 HotSpot Server VM (Win XP)
*
* @run main Test6850611
*/
public class Test6850611 {
public static void main(String[] args) {
test();
}
private static void test() {
for (int j = 0; j < 5; ++j) {
long x = 0;
for (int i = Integer.MIN_VALUE; i < Integer.MAX_VALUE; ++i) {
x += i;
}
System.out.println("sum: " + x);
if (x != -4294967295l) {
System.out.println("FAILED");
System.exit(97);
}
}
}
}