On Thu, 4 Apr 2024 17:04:30 GMT, Vladimir Kozlov <k...@openjdk.org> wrote:

>> Revert [JDK-8152664](https://bugs.openjdk.org/browse/JDK-8152664) RFE 
>> [changes](https://github.com/openjdk/jdk/commit/b853eb7f5ca24eeeda18acbb14287f706499c365)
>>  which was used for AOT [JEP 295](https://openjdk.org/jeps/295) 
>> implementation in JDK 9. The code was left in HotSpot assuming it will help 
>> in a future. But during work on Leyden we decided to not use it. In Leyden 
>> cached compiled code will be restored in CodeCache as normal nmethods: no 
>> need to change VM's runtime and GC code to process them.
>> 
>> I may work on optimizing `CodeBlob` and `nmethod` fields layout to reduce 
>> header size in separate changes. In these changes I did simple fields 
>> reordering to keep small (1 byte) fields together.
>> 
>> I do not see (and not expected) performance difference with these changes.
>> 
>> Tested tier1-5, xcomp, stress. Running performance testing.
>> 
>> I need help with testing on platforms which Oracle does not support.
>
> Vladimir Kozlov has updated the pull request incrementally with one 
> additional commit since the last revision:
> 
>   Address next round of comments

Looks good.

-------------

Marked as reviewed by stefank (Reviewer).

PR Review: https://git.openjdk.org/jdk/pull/18554#pullrequestreview-1980693606

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