RFR: 8310849: Pattern matching for instanceof and arrayType cleanup in j.l.invoke and j.l.reflect [v2]

[Chen Liang]

> This patch touches java.lang.reflect and java.lang.invoke packages. It replaces instanceof + cast with pattern matching and updates  Array.newInstance().getClass() patterns with arrayType() for obtaining array types of a class.

Chen Liang 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 two additional commits since the last revision:

 - Merge branch 'master' into cleanup/invoke-instanceof
 - 8310849: Pattern matching for instanceof and arrayType cleanup in j.l.invoke and j.l.reflect

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

Changes:
  - all: https://git.openjdk.org/jdk/pull/14642/files
  - new: https://git.openjdk.org/jdk/pull/14642/files/86808e33..4f5829e3

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=14642&range=01
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=14642&range=00-01

  Stats: 332 lines in 30 files changed: 129 ins; 20 del; 183 mod
  Patch: https://git.openjdk.org/jdk/pull/14642.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/14642/head:pull/14642

PR: https://git.openjdk.org/jdk/pull/14642