jdk-24/test/hotspot/jtreg/compiler/loopopts/TestCountedLoopPhiValue.java
2022-05-06 08:24:33 +00:00

79 lines
2.3 KiB
Java

/*
* Copyright (c) 2022, 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 8281429
* @summary PhiNode::Value() is too conservative for tripcount of CountedLoop
* @run main/othervm -XX:-TieredCompilation -Xbatch TestCountedLoopPhiValue
*/
public class TestCountedLoopPhiValue {
public static void main(String[] args) {
test1();
test2();
}
private static void test1() {
for (long l = (Long.MAX_VALUE - 1); l != (Long.MIN_VALUE + 100_000); l++) {
if (l == 0) {
throw new RuntimeException("Test failed");
}
}
}
private static void test2() {
for (int i = 1; i < 10 * 182 * 138; i++) {
iMeth(-9, -9);
}
}
public static final int N = 400;
public static long instanceCount=-2L;
public static long lArrFld[]=new long[N];
public static void iMeth(int i6, int i7) {
double d1;
int i8, i10, i11=30785, i12=8;
long l2;
byte by=58;
d1 = i7;
i8 = 1;
while (++i8 < 342) {
for (l2 = 1; l2 < 5; l2++) {
i6 -= (int)d1;
for (i10 = 1; i10 < 2; i10++) {
i7 += (int)l2;
i12 *= i11;
i11 -= i12;
instanceCount += i10;
lArrFld[i8 - 1] = by;
}
}
}
}
}