RFR: 8335367: [s390] Add support for load immediate on condition instructions. [v3]

[Manjunath S Matti.]

> Add support for load immediate on condition instructions.

Manjunath S Matti. has updated the pull request incrementally with one additional commit since the last revision:

  Updated based on review comments from Lutz.

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Changes:
  - all: https://git.openjdk.org/jdk/pull/22058/files
  - new: https://git.openjdk.org/jdk/pull/22058/files/31709a7d..9f5f3967

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=22058&range=02
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=22058&range=01-02

  Stats: 3 lines in 1 file changed: 0 ins; 0 del; 3 mod
  Patch: https://git.openjdk.org/jdk/pull/22058.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/22058/head:pull/22058

PR: https://git.openjdk.org/jdk/pull/22058