[jdk21u] RFR: 8314191: C2 compilation fails with "bad AD file" [v2]

[Aleksey Shipilev]

> Clean backport to fix recent JDK 21 regression.
> 
> Additional testing:
>  - [x] New test fails without the fix, passes with it
>  - [x] Linux AArch64 fastdebug `tier1 tier2 tier3`

Aleksey Shipilev 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 two additional commits since the last revision:

 - Merge branch 'master' into JDK-8314191-c2-bad-ad
 - Backport 969fcdb0de962b6eda7b362af010cb138e45afcf

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

Changes:
  - all: https://git.openjdk.org/jdk21u/pull/190/files
  - new: https://git.openjdk.org/jdk21u/pull/190/files/adcb4b6a..96a00717

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk21u&pr=190&range=01
 - incr: https://webrevs.openjdk.org/?repo=jdk21u&pr=190&range=00-01

  Stats: 21762 lines in 528 files changed: 8336 ins; 12120 del; 1306 mod
  Patch: https://git.openjdk.org/jdk21u/pull/190.diff
  Fetch: git fetch https://git.openjdk.org/jdk21u.git pull/190/head:pull/190

PR: https://git.openjdk.org/jdk21u/pull/190