jdk/test/hotspot/jtreg/compiler/longcountedloops/TestShortCountedLoopWithLongRCBadAssertPredicate2.java
Roland Westrelin 35f4a7410c 8366888: C2: incorrect assertion predicate with short running long counted loop
Co-authored-by: Christian Hagedorn <chagedorn@openjdk.org>
Reviewed-by: chagedorn, bmaillard
2025-11-25 13:00:07 +00:00

55 lines
2.0 KiB
Java

/*
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* 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
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*
* 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).
*
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* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*/
/**
* @test
* @bug 8366888
* @summary C2: incorrect assertion predicate with short running long counted loop
*
* @run main/othervm -XX:CompileOnly=TestShortCountedLoopWithLongRCBadAssertPredicate2::test -Xbatch TestShortCountedLoopWithLongRCBadAssertPredicate2
* @run main/othervm TestShortCountedLoopWithLongRCBadAssertPredicate2
*/
import java.lang.foreign.MemorySegment;
import java.lang.foreign.ValueLayout;
public class TestShortCountedLoopWithLongRCBadAssertPredicate2 {
private static MemorySegment ms = MemorySegment.ofArray(new byte[80000]);
private static final ValueLayout.OfByte BYTE = ValueLayout.JAVA_BYTE;
static byte[] bArr = new byte[80000];
public static void main(String[] args) {
for (int i = 0; i < 10000; i++) {
test(i);
}
}
public static void test(int start) {
int end = start + 100;
int i = 0;
while (start < end) {
bArr[i++] = ms.get(BYTE, start++);
}
}
}