mirror of
https://github.com/openjdk/jdk.git
synced 2026-05-20 18:37:51 +00:00
f155661151
Co-authored-by: Maurizio Cimadamore <mcimadamore@openjdk.org> Co-authored-by: Christian Hagedorn <chagedorn@openjdk.org> Reviewed-by: chagedorn, thartmann
67 lines
2.8 KiB
Java
67 lines
2.8 KiB
Java
/*
|
|
* Copyright (c) 2025, 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.
|
|
*/
|
|
|
|
package compiler.longcountedloops;
|
|
|
|
import compiler.lib.ir_framework.*;
|
|
|
|
/*
|
|
* @test
|
|
* @bug 8342692
|
|
* @summary C2: long counted loop/long range checks: don't create loop-nest for short running loops
|
|
* @library /test/lib /
|
|
* @run driver compiler.longcountedloops.TestStressShortRunningLongCountedLoop
|
|
*/
|
|
|
|
public class TestStressShortRunningLongCountedLoop {
|
|
private static volatile int volatileField;
|
|
|
|
public static void main(String[] args) {
|
|
TestFramework.runWithFlags("-XX:LoopMaxUnroll=0", "-XX:+IgnoreUnrecognizedVMOptions", "-XX:+StressShortRunningLongLoop");
|
|
TestFramework.runWithFlags("-XX:LoopMaxUnroll=0", "-XX:+IgnoreUnrecognizedVMOptions", "-XX:-StressShortRunningLongLoop");
|
|
}
|
|
|
|
@Test
|
|
@IR(applyIf = { "StressShortRunningLongLoop", "true" }, counts = { IRNode.COUNTED_LOOP, "1", IRNode.SHORT_RUNNING_LOOP_TRAP, "1", IRNode.OUTER_STRIP_MINED_LOOP, "1" })
|
|
@IR(applyIf = { "StressShortRunningLongLoop", "true" }, failOn = { IRNode.LOOP })
|
|
@IR(applyIf = { "StressShortRunningLongLoop", "false" }, counts = { IRNode.COUNTED_LOOP, "1", IRNode.LOOP, "1", IRNode.OUTER_STRIP_MINED_LOOP, "1" })
|
|
@IR(applyIf = { "StressShortRunningLongLoop", "false" }, failOn = { IRNode.SHORT_RUNNING_LOOP_TRAP })
|
|
public static int testLongLoopUnknownBoundsShortLoop(long start, long stop) {
|
|
int j = 0;
|
|
for (long i = start; i < stop; i++) {
|
|
volatileField = 42;
|
|
j++;
|
|
}
|
|
return j;
|
|
}
|
|
|
|
@Run(test = "testLongLoopUnknownBoundsShortLoop")
|
|
@Warmup(0)
|
|
public static void testLongLoopUnknownBoundsShortLoop_runner() {
|
|
int res = testLongLoopUnknownBoundsShortLoop(0, 100);
|
|
if (res != 100) {
|
|
throw new RuntimeException("incorrect result: " + res);
|
|
}
|
|
}
|
|
}
|