RFR: 8278947: Support for array constants in constant table [v2]

[Quan Anh Mai]

> Hi,
> 
> This patch adds support for arrays in compiled code constant tables and uses it for various vector replicate operations on x86.
> 
> Test: GHA, linux x64 tier 1-3
> 
> Thank you very much.

Quan Anh Mai 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 10 additional commits since the last revision:

 - Merge branch 'master' into constantVectorUpdate
 - update copyright
 - missing type in array_constant
 - Merge branch 'master' into constantVector
 - use constant table for remaining types
 - Merge branch 'master' into constantVector
 - refactor
 - replicate using constant
 - Merge branch 'master' into constantVector
 - initial commit

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

Changes:
  - all: https://git.openjdk.java.net/jdk/pull/6908/files
  - new: https://git.openjdk.java.net/jdk/pull/6908/files/e5767b46..968fdf0c

Webrevs:
 - full: https://webrevs.openjdk.java.net/?repo=jdk&pr=6908&range=01
 - incr: https://webrevs.openjdk.java.net/?repo=jdk&pr=6908&range=00-01

  Stats: 7307 lines in 310 files changed: 5407 ins; 983 del; 917 mod
  Patch: https://git.openjdk.java.net/jdk/pull/6908.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk pull/6908/head:pull/6908

PR: https://git.openjdk.java.net/jdk/pull/6908