RFR: Merge openjdk/jdk:master [v2]

[William Kemper]

> Merges tag jdk-21+14

William Kemper has updated the pull request with a new target base due to a merge or a rebase. The pull request now contains 234 commits:

 - Merge tag 'jdk-21+14' into merge-jdk-21-14
   
   Added tag jdk-21+14 for changeset 2b81faeb
 - Merge openjdk/jdk:master
 - Fix incorrect assert logic
   
   Reviewed-by: kdnilsen
 - Use relevant variables in log messages, remove unused import
   
   Reviewed-by: ysr, kdnilsen
 - Performance improvements for non-generational modes
   
   Reviewed-by: kdnilsen
 - Merge openjdk/jdk:master
 - Merge openjdk/jdk:master
 - Remove unused visualizer option
   
   Reviewed-by: kdnilsen
 - Merge openjdk/jdk:master
   
   Reviewed-by: rkennke
 - Merge openjdk/jdk:master
 - ... and 224 more: https://git.openjdk.org/shenandoah/compare/2b81faeb...98dbde54

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Changes: https://git.openjdk.org/shenandoah/pull/227/files
 Webrev: https://webrevs.openjdk.org/?repo=shenandoah&pr=227&range=01
  Stats: 16616 lines in 155 files changed: 15271 ins; 511 del; 834 mod
  Patch: https://git.openjdk.org/shenandoah/pull/227.diff
  Fetch: git fetch https://git.openjdk.org/shenandoah pull/227/head:pull/227

PR: https://git.openjdk.org/shenandoah/pull/227