RFR: 8349582: APX NDD code generation for OpenJDK [v2]

[Srinivas Vamsi Parasa]

> The goal of this PR is to generate code using APX NDD instructions.
> 
> **Please note:** I'm on vacation till March 3rd. Responses to the PR comments will be delayed until March 4th. Thank You for your understanding!

Srinivas Vamsi Parasa has updated the pull request incrementally with one additional commit since the last revision:

  revert to nf version for {pop/tz/lz}cnt count instructions

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

Changes:
  - all: https://git.openjdk.org/jdk/pull/23501/files
  - new: https://git.openjdk.org/jdk/pull/23501/files/e9794382..5306c39c

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=23501&range=01
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=23501&range=00-01

  Stats: 37 lines in 1 file changed: 0 ins; 13 del; 24 mod
  Patch: https://git.openjdk.org/jdk/pull/23501.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/23501/head:pull/23501

PR: https://git.openjdk.org/jdk/pull/23501