cbe329b90a
Reviewed-by: lkorinth, lmesnik
108 lines
4.3 KiB
Java
108 lines
4.3 KiB
Java
/*
|
|
* Copyright (c) 2019 SAP SE. 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 8220374 8241492
|
|
* @summary C2: LoopStripMining doesn't strip as expected
|
|
* @requires vm.compiler2.enabled
|
|
*
|
|
* @library /test/lib
|
|
* @run driver compiler.loopstripmining.CheckLoopStripMining
|
|
*/
|
|
|
|
package compiler.loopstripmining;
|
|
|
|
import jdk.test.lib.Utils;
|
|
import jdk.test.lib.process.ProcessTools;
|
|
|
|
public class CheckLoopStripMining {
|
|
public static void main(String args[]) throws Exception {
|
|
ProcessTools.executeTestJava("-XX:+UnlockDiagnosticVMOptions",
|
|
"-XX:+SafepointTimeout",
|
|
"-XX:+SafepointALot",
|
|
"-XX:+AbortVMOnSafepointTimeout",
|
|
"-XX:SafepointTimeoutDelay=" + Utils.adjustTimeout(300),
|
|
"-XX:GuaranteedSafepointInterval=" + Utils.adjustTimeout(300),
|
|
"-XX:-TieredCompilation",
|
|
"-XX:+UseCountedLoopSafepoints",
|
|
"-XX:LoopStripMiningIter=1000",
|
|
"-XX:LoopUnrollLimit=0",
|
|
"-XX:CompileCommand=compileonly,compiler.loopstripmining.CheckLoopStripMining$Test1::test_loop",
|
|
"-Xcomp",
|
|
Test1.class.getName())
|
|
.shouldHaveExitValue(0)
|
|
.stdoutShouldContain("sum: 715827882");
|
|
|
|
ProcessTools.executeTestJava("-XX:+UnlockDiagnosticVMOptions",
|
|
"-XX:+SafepointTimeout",
|
|
"-XX:+SafepointALot",
|
|
"-XX:+AbortVMOnSafepointTimeout",
|
|
"-XX:SafepointTimeoutDelay=" + Utils.adjustTimeout(300),
|
|
"-XX:GuaranteedSafepointInterval=" + Utils.adjustTimeout(300),
|
|
"-XX:-TieredCompilation",
|
|
"-XX:+UseCountedLoopSafepoints",
|
|
"-XX:LoopStripMiningIter=1000",
|
|
"-XX:LoopUnrollLimit=0",
|
|
"-XX:-BackgroundCompilation",
|
|
Test2.class.getName())
|
|
.shouldHaveExitValue(0);
|
|
}
|
|
|
|
public static class Test1 {
|
|
public static int test_loop(int x) {
|
|
int sum = 0;
|
|
if (x != 0) {
|
|
for (int y = 1; y < Integer.MAX_VALUE; ++y) {
|
|
if (y % x == 0) ++sum;
|
|
}
|
|
}
|
|
return sum;
|
|
}
|
|
|
|
public static void main(String args[]) {
|
|
int sum = test_loop(3);
|
|
System.out.println("sum: " + sum);
|
|
}
|
|
}
|
|
|
|
public static class Test2 {
|
|
public static int test_loop(int start, int stop) {
|
|
int sum = 0;
|
|
for (int x = start; x < stop; x++) {
|
|
sum += x;
|
|
}
|
|
return sum;
|
|
}
|
|
|
|
public static void main(String args[]) {
|
|
for (int i = 0; i < 20_000; i++) {
|
|
test_loop(0, 1);
|
|
}
|
|
test_loop(Integer.MIN_VALUE, 0);
|
|
test_loop(-1, Integer.MAX_VALUE);
|
|
test_loop(Integer.MIN_VALUE, Integer.MAX_VALUE);
|
|
}
|
|
}
|
|
}
|