RFR: 8355003: Implement JEP 515: Ahead-of-Time Method Profiling [v23]
Igor Veresov
iveresov at openjdk.org
Thu May 22 20:25:21 UTC 2025
> Improve warm-up time by making profile data from a previous run of an application instantly available, when the HotSpot Java Virtual Machine starts. Specifically, enhance the [AOT cache](https://openjdk.org/jeps/483) to store method execution profiles from training runs, reducing profiling delays in subsequent production runs.
>
> More details in the JEP: https://bugs.openjdk.org/browse/JDK-8325147
Igor Veresov has updated the pull request with a new target base due to a merge or a rebase. The pull request now contains 88 commits:
- Merge branch 'master' into pp2
- Merge branch 'master' into pp2
- 8357284: runtime/cds/appcds/aotProfile/AOTProfileFlags.java fails on non-debug platform
- 8357283: compiler/debug/TestStressBailout.java hangs when running with AOT cache
- Merge branch 'master' into pp2
- Address Ioi's comments
- Merge branch 'master' into pp2
- Address Ioi's comments
- 8356885: Don't emit C1 profiling for casts if TypeProfileCasts is off
Reviewed-by: vlivanov, kvn
- 8352755: Misconceptions about j.text.DecimalFormat digits during parsing
Reviewed-by: naoto
- ... and 78 more: https://git.openjdk.org/jdk/compare/139a05d0...7a350671
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Changes: https://git.openjdk.org/jdk/pull/24886/files
Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=24886&range=22
Stats: 3324 lines in 59 files changed: 3111 ins; 100 del; 113 mod
Patch: https://git.openjdk.org/jdk/pull/24886.diff
Fetch: git fetch https://git.openjdk.org/jdk.git pull/24886/head:pull/24886
PR: https://git.openjdk.org/jdk/pull/24886
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