RFR: 8294961: Convert java.base/java.lang.reflect.ProxyGenerator to use the Classfile API to generate proxy classes [v12]

[Adam Sotona]

> java.base java.lang.reflect.ProxyGenerator uses ASM to generate proxy classes.
> 
> This patch converts it to use Classfile API.
> 
> It is continuation of https://github.com/openjdk/jdk/pull/10991
> 
> Any comments and suggestions are welcome.
> 
> Please review.
> 
> Thank you,
> Adam

Adam Sotona has updated the pull request with a new target base due to a merge or a rebase. The pull request now contains 21 commits:

 - Merge branch 'master' into JDK-8294961-proxy
 - Update src/java.base/share/classes/java/lang/reflect/ProxyGenerator.java
   
   Co-authored-by: Mandy Chung <mandy.chung at oracle.com>
 - initialization of template entries by index
 - Apply suggestions from code review
   
   Co-authored-by: Mandy Chung <mandy.chung at oracle.com>
 - applied suggested changes
 - Revert "StackCounter performance boost"
   
   This reverts commit 0dc63d4edf40fd9458fbfa0c7661d57ed0022981.
 - Revert "SplitConstantPool performance fix"
   
   This reverts commit b7a60ae944983224e3b4c097576c496351394fe0.
 - Revert "applied the recommended changes"
   
   This reverts commit 7d0da2c0190c27f8e2cf89557e31f5d16ab4950e.
 - Revert "minor StackCounter fix"
   
   This reverts commit 41e879348c8f2ea70b25119e65527b81281c33ac.
 - Revert "Update src/java.base/share/classes/jdk/internal/classfile/impl/StackCounter.java"
   
   This reverts commit c8f1d304358e19872450cd29449d82675f9bbe3e.
 - ... and 11 more: https://git.openjdk.org/jdk/compare/0583f735...40f99d1c

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

Changes: https://git.openjdk.org/jdk/pull/17121/files
 Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=17121&range=11
  Stats: 543 lines in 2 files changed: 129 ins; 189 del; 225 mod
  Patch: https://git.openjdk.org/jdk/pull/17121.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/17121/head:pull/17121

PR: https://git.openjdk.org/jdk/pull/17121