[jdk17u-dev] RFR: 8307423: [s390x] Represent Registers as values [v2]

[Amit Kumar]

> Hi all,
> 
> This pull request contains a backport of commit [8bbd264c](https://github.com/openjdk/jdk/commit/8bbd264c6e4b4045a218f11ae6b5b4f395bc2aa9) from the [openjdk/jdk](https://git.openjdk.org/jdk) repository.
> 
> The commit being backported was authored by Amit Kumar on 8 May 2023 and was reviewed by Martin Doerr and Lutz Schmidt.
> 
> Thanks!

Amit Kumar has updated the pull request with a new target base due to a merge or a rebase. The pull request now contains six commits:

 - fixes merge conflict in vmStructs.cpp
 - removes register_definitions_s390 & updates vmStructs
 - Merge branch 'openjdk:master' into backport-offamitkumar-8bbd264c
 - extra space
 - update
 - Backport 8bbd264c6e4b4045a218f11ae6b5b4f395bc2aa9

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

Changes: https://git.openjdk.org/jdk17u-dev/pull/2453/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk17u-dev&pr=2453&range=01
  Stats: 518 lines in 10 files changed: 83 ins; 261 del; 174 mod
  Patch: https://git.openjdk.org/jdk17u-dev/pull/2453.diff
  Fetch: git fetch https://git.openjdk.org/jdk17u-dev.git pull/2453/head:pull/2453

PR: https://git.openjdk.org/jdk17u-dev/pull/2453