RFR: 8344026: [s390x] ubsan failure: signed integer overflow in c1_LIRGenerator_s390.cpp [v2]

[Amit Kumar]

> This PR adds `c > 0 && c < max_jint` check in c1_LIRGenerator_s390.cpp. Please look JBS for more info.

Amit Kumar has updated the pull request incrementally with two additional commits since the last revision:

 - s390x update
 - ppc changes

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

Changes:
  - all: https://git.openjdk.org/jdk/pull/22144/files
  - new: https://git.openjdk.org/jdk/pull/22144/files/39e16cd3..a08e4fdb

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=22144&range=01
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=22144&range=00-01

  Stats: 12 lines in 2 files changed: 8 ins; 0 del; 4 mod
  Patch: https://git.openjdk.org/jdk/pull/22144.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/22144/head:pull/22144

PR: https://git.openjdk.org/jdk/pull/22144