RFR: 8323183: ClassFile API performance improvements [v7]

[Adam Sotona]

> 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 incrementally with one additional commit since the last revision:

  Update src/java.base/share/classes/jdk/internal/classfile/impl/StackMapDecoder.java
  
  Co-authored-by: Andrey Turbanov <turbanoff at gmail.com>

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

Changes:
  - all: https://git.openjdk.org/jdk/pull/17306/files
  - new: https://git.openjdk.org/jdk/pull/17306/files/5f67f8c1..5a04ec59

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=17306&range=06
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=17306&range=05-06

  Stats: 1 line in 1 file changed: 0 ins; 0 del; 1 mod
  Patch: https://git.openjdk.org/jdk/pull/17306.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/17306/head:pull/17306

PR: https://git.openjdk.org/jdk/pull/17306