RFR: 8303374: Compiler Implementation for Primitive types in patterns, instanceof, and switch (Preview) [v18]

[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/jep443-20231010/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 23 additional commits since the last revision:

 - Merge branch 'master' into primitive-patterns
 - Update name of exactness methods class
 - Merge branch 'master' into primitive-patterns
 - Adjust tests
   
   Co-authored-by: Jan Lahoda <jan.lahoda at oracle.com>
   Co-authored-by: Angelos Bimpoudis <angelos.bimpoudis at oracle.com>
 - Fix exhaustiveness check for primitive types
 - Add tests
 - Improve non integral check
 - Fixing error conditions, tweaking tests.
 - Attempting to improve reported errors.
 - Add comment for TypePairs
 - ... and 13 more: https://git.openjdk.org/jdk/compare/68beac56...3c0d85e9

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

Changes:
  - all: https://git.openjdk.org/jdk/pull/15638/files
  - new: https://git.openjdk.org/jdk/pull/15638/files/27c2aab6..3c0d85e9

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=15638&range=17
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=15638&range=16-17

  Stats: 1754 lines in 30 files changed: 800 ins; 788 del; 166 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