RFR: 8359145: Implement JEP 530: Primitive Types in Patterns, instanceof, and switch (Fourth Preview) [v4]

[Aggelos Biboudis]

> PR for Primitive Types in Patterns, instanceof, and switch (Fourth Preview).
> 
> spec: https://cr.openjdk.org/~abimpoudis/instanceof/latest/

Aggelos Biboudis has updated the pull request incrementally with one additional commit since the last revision:

  Fix regression in Check

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

Changes:
  - all: https://git.openjdk.org/jdk/pull/27637/files
  - new: https://git.openjdk.org/jdk/pull/27637/files/8a17c55a..abe53647

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=27637&range=03
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=27637&range=02-03

  Stats: 14 lines in 1 file changed: 4 ins; 4 del; 6 mod
  Patch: https://git.openjdk.org/jdk/pull/27637.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/27637/head:pull/27637

PR: https://git.openjdk.org/jdk/pull/27637