RFR: 8323183: ClassFile API performance improvements [v8]

[Claes Redestad]

On Mon, 4 Mar 2024 12:00:18 GMT, Adam Sotona <asotona at openjdk.org> wrote:

>> ClassFile API performance related improvements have been separated from #17121 into this PR.
>> 
>> These improvements are important to minimize performance regression of
>> 8294961: Convert java.base/java.lang.reflect.ProxyGenerator to use the Classfile API to generate proxy classes #17121
>> 
>> Please review.
>> 
>> Thanks,
>> Adam
>
> Adam Sotona has updated the pull request with a new target base due to a merge or a rebase. The incremental webrev excludes the unrelated changes brought in by the merge/rebase. The pull request contains 24 additional commits since the last revision:
> 
>  - Merge remote-tracking branch 'openjdk/master' into JDK-8323184-performance-fixes
>  - applied suggested changes
>  - Update src/java.base/share/classes/jdk/internal/classfile/impl/StackMapDecoder.java
>    
>    Co-authored-by: Andrey Turbanov <turbanoff at gmail.com>
>  - updated copyright year
>  - reverted custom method slots counting in StackCounter
>  - improved and extended GenerateStackMaps benchmarks and renamed to CodeAttributeTools
>  - Update src/java.base/share/classes/jdk/internal/classfile/impl/StackCounter.java
>    
>    Co-authored-by: liach <7806504+liach at users.noreply.github.com>
>  - applied suggested changes
>  - applied suggested changes
>  - improved StackMapDescoder::initFrameLocals performance
>  - ... and 14 more: https://git.openjdk.org/jdk/compare/d128c9e7...747fce8e

Marked as reviewed by redestad (Reviewer).

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PR Review: https://git.openjdk.org/jdk/pull/17306#pullrequestreview-1914189294