Bug ID: JDK-8350209 Preserve adapters in AOT cache

JDK-8350209 : Preserve adapters in AOT cache

Type: Enhancement
Component: hotspot
Sub-Component: compiler
Affected Version: 25

Priority: P3
Status: Resolved
Resolution: Fixed

Submitted: 2025-02-17
Updated: 2025-05-21
Resolved: 2025-05-01

Versions (Unresolved/Resolved/Fixed)

The Version table provides details related to the release that this issue/RFE will be addressed.

Unresolved : Release in which this issue/RFE will be addressed.
Resolved: Release in which this issue/RFE has been resolved.
Fixed : Release in which this issue/RFE has been fixed. The release containing this fix may be available for download as an Early Access Release or a General Availability Release.

To download the current JDK release, click here.

JDK 25
25 b22Fixed

Related Reports

Blocks :	JDK-8348426 - Generate binary file for -XX:AOTMode=record -XX:AOTConfiguration=file
Blocks :	JDK-8354887 - Preserve runtime blobs in AOT code cache
Causes :	JDK-8357047 - [ubsan] AdapterFingerPrint::AdapterFingerPrint runtime error: index 3 out of bounds
Causes :	JDK-8356153 - Shenandoah stubs are missing in AOT Code Cache addresses table
Causes :	JDK-8356192 - Enable AOT code caching only on supported platforms
Causes :	JDK-8356122 - Client build fails after JDK-8350209
Duplicate :	JDK-8026297 - Generate AdapterHandlerEntry during CDS dump
Relates :	JDK-8355514 - [premain] rename AOT code flags and adjust their ergonomic settings
Relates :	JDK-8355352 - [premain] rename AOT Code classes and logging tags

Description

JEP 483  (JDK-8315737) preserves class information in AOT cache which help startup performance.
We should also preserve adapters (i2c, c2i) to avoid generation during startup.

Comments

Changeset: aae2bb62 Branch: master Author: Vladimir Kozlov <kvn@openjdk.org> Date: 2025-05-01 21:03:24 +0000 URL: https://git.openjdk.org/jdk/commit/aae2bb62499855e3da33c06547d437e49c91a14b
01-05-2025
Targeting JDK 25.
21-04-2025
A pull request was submitted for review. Branch: master URL: https://git.openjdk.org/jdk/pull/24740 Date: 2025-04-17 19:11:47 +0000
17-04-2025
Original development draft PR: https://github.com/openjdk/jdk/pull/24158
17-04-2025
We also need to preserve some code blobs, subs used by adapters.
21-02-2025
This RFE is fro porting changes from leyden/premain repo: https://github.com/openjdk/leyden/pull/25 and https://github.com/openjdk/leyden/pull/39 In addition to those changes we need to port main functionality for caching compiled code (at least for adapters): https://github.com/openjdk/leyden/blob/premain/src/hotspot/share/code/SCCache.hpp
17-02-2025