RFR: 8310849: Pattern matching for instanceof and arrayType cleanup in j.l.invoke and j.l.reflect [v4]

[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 incrementally with two additional commits since the last revision:

 - Wrap line that is too long
 - Use single space for single-line if statements
   
   Co-authored-by: Andrey Turbanov <turbanoff at gmail.com>

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

Changes:
  - all: https://git.openjdk.org/jdk/pull/14642/files
  - new: https://git.openjdk.org/jdk/pull/14642/files/7879c150..9ea36a54

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=14642&range=03
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=14642&range=02-03

  Stats: 5 lines in 3 files changed: 1 ins; 0 del; 4 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