jdk-24/test/hotspot/jtreg/compiler/rangechecks/TestRCMinInt.java
Roland Westrelin 82f4aacb42 8259609: C2: optimize long range checks in long counted loops
Co-authored-by: John R Rose <jrose@openjdk.org>
Reviewed-by: thartmann, jrose
2021-10-26 15:53:37 +00:00

61 lines
1.9 KiB
Java

/*
* Copyright (c) 2021, Red Hat, Inc. 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 8259609
* @summary range checks with min int scale value
*
* @run main/othervm -XX:-BackgroundCompilation TestRCMinInt
*
*/
import java.util.Objects;
public class TestRCMinInt {
public static void main(String[] args) {
for (int i = 0; i < 20_000; i++) {
test1(0, 10, 10);
test2(0, 10, 10);
}
}
private static float test1(int start, int stop, int offset) {
float v = 1;
for (int i = start; i < stop; i+=2) {
final int index = offset + Integer.MIN_VALUE * i;
Objects.checkIndex(index, 100);
}
return v;
}
private static float test2(int start, int stop, int offset) {
float v = 1;
for (int i = start; i < stop; i+=2) {
final int index = offset - Integer.MIN_VALUE * i;
Objects.checkIndex(index, 100);
}
return v;
}
}