[lworld] RFR: 8227588: [lworld] Better optimize non-flattened inline type array accesses

[Quan Anh Mai]

Hi,

This PR removes all the `// TODO 8227588`. Either the problem has already been solved, or I analysed and changed the `TODO` to a more detailed issue.

Please kindly review, thanks a lot.

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

Commit messages:
 - Fix JDK-8227588

Changes: https://git.openjdk.org/valhalla/pull/1855/files
  Webrev: https://webrevs.openjdk.org/?repo=valhalla&pr=1855&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8227588
  Stats: 6 lines in 3 files changed: 1 ins; 2 del; 3 mod
  Patch: https://git.openjdk.org/valhalla/pull/1855.diff
  Fetch: git fetch https://git.openjdk.org/valhalla.git pull/1855/head:pull/1855

PR: https://git.openjdk.org/valhalla/pull/1855