JDK-8354887 : Preserve runtime blobs in AOT code cache
  • Type: Enhancement
  • Component: hotspot
  • Sub-Component: compiler
  • Affected Version: 25
  • Priority: P4
  • Status: Resolved
  • Resolution: Fixed
  • Submitted: 2025-04-16
  • Updated: 2025-05-23
  • Resolved: 2025-05-15
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JDK 25
25 b24Fixed
Related Reports
Blocks :  
JDK-8350209 - Preserve adapters in AOT cache
Causes :  
JDK-8357593 - Crash in Matcher::init_first_stack_mask() during production run
Causes :  
JDK-8357166 - Many AOT tests failed with VM crash
Causes :  
JDK-8357514 - Disable AOT caching for runtime stubs
Causes :  
JDK-8357149 - Test runtime/cds/appcds/aotCode/AOTCodeFlags.java is broken after JDK-8354887
Causes :  
JDK-8357250 - assert(shift >= 0 && shift < 4) failed: unexpected compressd klass shift!
Causes :  
JDK-8357143 - New test AOTCodeCompressedOopsTest.java fails on platforms without AOT Code Cache support
Causes :  
JDK-8357084 - Zero build fails after JDK-8354887
Description
JEP 483 (JDK-8315737) preserves class information in AOT cache which help startup performance.
And JDK-8350209 preserves adapters in AOT cache.
We should also preserve stubs to avoid their generation during startup.
Comments
Changeset: c59debb3 Branch: master Author: Ashutosh Mehra <asmehra@openjdk.org> Date: 2025-05-15 17:18:56 +0000 URL: https://git.openjdk.org/jdk/commit/c59debb3844d009ac501a48c31822a07f00521e9
15-05-2025
[~asmehra] I see you added your own test. Good. I attached test DifferentCompressedOopsEncoding.java which Ioi suggested to test different oops encoding.
12-05-2025
A pull request was submitted for review. Branch: master URL: https://git.openjdk.org/jdk/pull/25019 Date: 2025-05-03 04:10:01 +0000
03-05-2025