JDK-8343297 : Vector unsigned min/max test are failing with -Xcomp
  • Type: Bug
  • Component: hotspot
  • Sub-Component: compiler
  • Affected Version: 24
  • Priority: P3
  • Status: Resolved
  • Resolution: Fixed
  • Submitted: 2024-10-30
  • Updated: 2024-11-11
  • Resolved: 2024-11-01
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JDK 24
24 b23Fixed
Related Reports
Duplicate :  
JDK-8343246 - Total 17 jdk/incubator/vector tests fails with -Xcomp
Relates :  
JDK-8338021 - Support new unsigned and saturating vector operators in VectorAPI
Description
Noticed in a personal run that many jdk/incubator/vector/* failed on linux-x64-debug even though my changes were unrelated. I ran one of them with the latest CI build 24-ea+22-2632 again and could see that it failed 4 out of 10 times.

I ran some binary search with the most recent builds and could identify that the tests start to fail after JDK-8338021.

Additionally required VM flags:
-ea -esa -XX:CompileThreshold=100 -XX:+UnlockExperimentalVMOptions -Xcomp -server -XX:-TieredCompilation	

Failings tests:
- jdk/incubator/vector/ByteMaxVectorTests.java
- jdk/incubator/vector/Byte[64|128|256|512]VectorTests.java
- jdk/incubator/vector/ShortMaxVectorTests.java
- jdk/incubator/vector/Short[64|128|256|512]VectorTests.java
- jdk/incubator/vector/IntMaxVectorTests.java
- jdk/incubator/vector/Int[64|128|256|512]VectorTests.java
- jdk/incubator/vector/LongMaxVectorTests.java
- jdk/incubator/vector/Long[64|128|256|512]VectorTests.java
Comments
I have filed another bug specifically related KNL target for long vector min/max https://bugs.openjdk.org/browse/JDK-8343419
01-11-2024
Changeset: 8d4d589f Branch: master Author: Jatin Bhateja <jbhateja@openjdk.org> Date: 2024-11-01 07:34:59 +0000 URL: https://git.openjdk.org/jdk/commit/8d4d589fc5895f328c7db93bae72048e8711d727
01-11-2024
A pull request was submitted for review. Branch: master URL: https://git.openjdk.org/jdk/pull/21819 Date: 2024-11-01 03:45:27 +0000
01-11-2024
These tests steady fails with VM option -Xcomp on linux-64 by ours CI.
30-10-2024
Also reported with JDK-8343246. Closed that as a dup of this one.
30-10-2024
Initial ILW = Multiple vector tests failures, regression but intermittent at tier4, no workaround = MMH = P3
30-10-2024
[~jbhateja] can you have a look?
30-10-2024