JDK-8369138 : New test compiler/loopstripmining/MissingStoreAfterOuterStripMinedLoop.java fails
  • Type: Bug
  • Component: hotspot
  • Sub-Component: compiler
  • Affected Version: 26
  • Priority: P4
  • Status: Resolved
  • Resolution: Fixed
  • OS: generic
  • CPU: generic
  • Submitted: 2025-10-03
  • Updated: 2025-10-06
  • Resolved: 2025-10-03
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JDK 26
26 masterFixed
Related Reports
Causes :  
JDK-8364757 - Missing Store nodes caused by bad wiring in PhaseIdealLoop::insert_post_loop
Description
The following test failed in the JDK26 CI:

compiler/loopstripmining/MissingStoreAfterOuterStripMinedLoop.java

Here's a snippet of the linux-x64 log file:

#section:main
----------messages:(7/789)----------
command: main -XX:+IgnoreUnrecognizedVMOptions -XX:-TieredCompilation -Xcomp -XX:-UseLoopPredicate -XX:-UseAutoVectorizationPredicate -XX:CompileCommand=compileonly,compiler.loopstripmining.MissingStoreAfterOuterStripMinedLoop::test* compiler.loopstripmining.MissingStoreAfterOuterStripMinedLoop
reason: User specified action: run main/othervm -XX:+IgnoreUnrecognizedVMOptions -XX:-TieredCompilation -Xcomp -XX:-UseLoopPredicate -XX:-UseAutoVectorizationPredicate -XX:CompileCommand=compileonly,compiler.loopstripmining.MissingStoreAfterOuterStripMinedLoop::test* compiler.loopstripmining.MissingStoreAfterOuterStripMinedLoop 
started: Fri Oct 03 20:16:30 UTC 2025
Mode: othervm [/othervm specified]
Process id: 2318776
finished: Fri Oct 03 20:16:30 UTC 2025
elapsed time (seconds): 0.004
----------configuration:(0/0)----------
----------System.out:(0/0)----------
----------System.err:(5/361)----------
Error: VM option 'UseAutoVectorizationPredicate' is diagnostic and must be enabled via -XX:+UnlockDiagnosticVMOptions.
Error: The unlock option must precede 'UseAutoVectorizationPredicate'.
Improperly specified VM option 'UseAutoVectorizationPredicate'
Error: Could not create the Java Virtual Machine.
Error: A fatal exception has occurred. Program will exit.
----------rerun:(46/6798)*----------
Comments
The fix for this bug is integrated in jdk-26+19-1895.
04-10-2025
Changeset: e6868c62 Branch: master Author: Daniel D. Daugherty <dcubed@openjdk.org> Date: 2025-10-03 22:17:01 +0000 URL: https://git.openjdk.org/jdk/commit/e6868c624851d5c6bd182e45ba908cb06b731e8c
03-10-2025
A pull request was submitted for review. Branch: master URL: https://git.openjdk.org/jdk/pull/27630 Date: 2025-10-03 22:10:07 +0000
03-10-2025