RFR: 8344304: [s390x] ubsan: negation of -2147483648 cannot be represented in type 'int' [v2]

[Amit Kumar]

> fixes the issue reported by ubsan.

Amit Kumar has updated the pull request incrementally with one additional commit since the last revision:

  cover lir_add as well

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

Changes:
  - all: https://git.openjdk.org/jdk/pull/22456/files
  - new: https://git.openjdk.org/jdk/pull/22456/files/659836a6..5bdf265a

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=22456&range=01
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=22456&range=00-01

  Stats: 11 lines in 1 file changed: 7 ins; 1 del; 3 mod
  Patch: https://git.openjdk.org/jdk/pull/22456.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/22456/head:pull/22456

PR: https://git.openjdk.org/jdk/pull/22456