jdk-24/test/hotspot/jtreg/compiler/loopopts/PeelingZeroTripCount.java
Tobias Holenstein f5cbe53fdd 8027711: Unify wildcarding syntax for CompileCommand and CompileOnly
Reviewed-by: kvn, thartmann, chagedorn
2023-06-12 07:39:23 +00:00

58 lines
2.0 KiB
Java

/*
* Copyright (c) 2023, Oracle and/or its affiliates. All rights reserved.
* Copyright (c) 2018, 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
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*/
/*
* @test
* @bug 8215044
* @summary C2 crash in loopTransform.cpp with assert(cl->trip_count() > 0) failed: peeling a fully unrolled loop
*
* @run main/othervm -XX:CompileOnly=PeelingZeroTripCount::test PeelingZeroTripCount
*
*/
public class PeelingZeroTripCount {
public static void main(String[] args) {
PeelingZeroTripCount issue = new PeelingZeroTripCount();
for (int i = 0; i < 10000; i++) {
issue.test(new int[999]);
}
}
public void test(int[] iaarg) {
int[] iarr = new int[777];
for (int i = 4; i > 0; i--) {
for (int j = 0; j <= i - 1; j++) {
int istep = 2 * j - i + 1;
int iadj = 0;
if (istep < 0) {
iadj = iarr[0-istep] + iaarg[i-1];
} else {
iadj = iarr[istep] + iaarg[i-1];
}
}
}
}
}