-
Notifications
You must be signed in to change notification settings - Fork 4
Commit
This commit does not belong to any branch on this repository, and may belong to a fork outside of the repository.
Merge master jdk-17.0.12+7 into openj9-staging
Signed-off-by: J9 Build <j9build@ca.ibm.com>
- Loading branch information
Showing
8 changed files
with
161 additions
and
33 deletions.
There are no files selected for viewing
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
92 changes: 92 additions & 0 deletions
92
test/hotspot/jtreg/compiler/loopopts/TestUnrollLimitPreciseType.java
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,92 @@ | ||
| /* | ||
| * Copyright (c) 2023, Oracle and/or its affiliates. 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 id=test1 | ||
| * @bug 8298935 | ||
| * @summary CMoveI for underflow protection of the limit did not compute a type that was precise enough. | ||
| * This lead to dead data but zero-trip-guard control did not die -> "malformed control flow". | ||
| * @requires vm.compiler2.enabled | ||
| * @run main/othervm | ||
| * -XX:CompileCommand=compileonly,compiler.loopopts.TestUnrollLimitPreciseType::test1 | ||
| * -XX:CompileCommand=dontinline,compiler.loopopts.TestUnrollLimitPreciseType::* | ||
| * -XX:MaxVectorSize=64 | ||
| * -Xcomp | ||
| * -XX:+UnlockExperimentalVMOptions -XX:PerMethodSpecTrapLimit=0 -XX:PerMethodTrapLimit=0 | ||
| * compiler.loopopts.TestUnrollLimitPreciseType test1 | ||
| */ | ||
|
|
||
| /* | ||
| * @test id=test2 | ||
| * @bug 8298935 | ||
| * @summary CMoveI for underflow protection of the limit did not compute a type that was precise enough. | ||
| * This lead to dead data but zero-trip-guard control did not die -> "malformed control flow". | ||
| * @requires vm.compiler2.enabled | ||
| * @run main/othervm | ||
| * -XX:CompileCommand=compileonly,compiler.loopopts.TestUnrollLimitPreciseType::* | ||
| * -Xcomp | ||
| * compiler.loopopts.TestUnrollLimitPreciseType test2 | ||
| */ | ||
|
|
||
|
|
||
| package compiler.loopopts; | ||
|
|
||
| public class TestUnrollLimitPreciseType { | ||
| static final int RANGE = 512; | ||
|
|
||
| public static void main(String args[]) { | ||
| if (args.length != 1) { | ||
| throw new RuntimeException("Need exactly one argument."); | ||
| } | ||
| if (args[0].equals("test1")) { | ||
| byte[] data = new byte[RANGE]; | ||
| test1(data); | ||
| } else if (args[0].equals("test2")) { | ||
| test2(); | ||
| } else { | ||
| throw new RuntimeException("Do not have: " + args[0]); | ||
| } | ||
| } | ||
|
|
||
| public static void test1(byte[] data) { | ||
| // Did not fully analyze this. But it is also unrolled, SuperWorded, | ||
| // and further unrolled with vectorlized post loop. | ||
| // Only seems to reproduce with avx512, and not with avx2. | ||
| for (int j = 192; j < RANGE; j++) { | ||
| data[j - 192] = (byte)(data[j] * 11); | ||
| } | ||
| } | ||
|
|
||
| static void test2() { | ||
| // Loop is SuperWord'ed. | ||
| // We unroll more afterwards, and so add vectorized post loop. | ||
| // But it turns out that the vectorized post loop is never entered. | ||
| // This lead to assert, because the zero-trip-guard did not collaspse, | ||
| // but the CastII with the trip count did die. | ||
| // Only seems to reproduce with avx512, and not with avx2. | ||
| double dArr[][] = new double[100][100]; | ||
| for (int i = 2, j = 2; j < 68; j++) { | ||
| dArr[i][j] = 8; | ||
| } | ||
| } | ||
| } |