[lworld] RFR: Merge jdk [v4]

[David Simms]

> Merge tag 'jdk-20+20' into lworld_merge_jdk_20_20

David Simms has updated the pull request incrementally with one additional commit since the last revision:

  Missed adjusting new assert in merge conflict

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

Changes:
  - all: https://git.openjdk.org/valhalla/pull/800/files
  - new: https://git.openjdk.org/valhalla/pull/800/files/1f0af2a2..b272df1f

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=valhalla&pr=800&range=03
 - incr: https://webrevs.openjdk.org/?repo=valhalla&pr=800&range=02-03

  Stats: 1 line in 1 file changed: 0 ins; 0 del; 1 mod
  Patch: https://git.openjdk.org/valhalla/pull/800.diff
  Fetch: git fetch https://git.openjdk.org/valhalla pull/800/head:pull/800

PR: https://git.openjdk.org/valhalla/pull/800