RFR: 8303374: Compiler Implementation for Primitive types in patterns, instanceof, and switch (Preview) [v3]

[Aggelos Biboudis]

> This is the first draft of a patch for Primitive types in patterns, instanceof, and switch (Preview).
> 
> Draft spec here: https://cr.openjdk.org/~abimpoudis/instanceof/instanceof-20230913/specs/instanceof-jls.html

Aggelos Biboudis 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 four additional commits since the last revision:

 - Merge branch 'master' into primitive-patterns
 - Implement type pairs to exactnessMethod name
 - Apply suggestions from code review
   
   Co-authored-by: Raffaello Giulietti <raffaello.giulietti at oracle.com>
 - 8303374: Compiler Implementation for Primitive types in patterns, instanceof, and switch (Preview)

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

Changes:
  - all: https://git.openjdk.org/jdk/pull/15638/files
  - new: https://git.openjdk.org/jdk/pull/15638/files/1ae06ac8..ad6071b0

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=15638&range=02
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=15638&range=01-02

  Stats: 28829 lines in 719 files changed: 17870 ins; 8464 del; 2495 mod
  Patch: https://git.openjdk.org/jdk/pull/15638.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/15638/head:pull/15638

PR: https://git.openjdk.org/jdk/pull/15638