[jdk20u] RFR: 8299259: C2: Div/Mod nodes without zero check could be split through iv phi of loop resulting in SIGFPE

[Tobias Hartmann]

Backport of [JDK-8299259](https://bugs.openjdk.java.net/browse/JDK-8299259). Applies cleanly. Approval is pending.

Thanks,
Tobias

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

Commit messages:
 - 8299259: C2: Div/Mod nodes without zero check could be split through iv phi of loop resulting in SIGFPE

Changes: https://git.openjdk.org/jdk20u/pull/25/files
 Webrev: https://webrevs.openjdk.org/?repo=jdk20u&pr=25&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8299259
  Stats: 213 lines in 3 files changed: 199 ins; 11 del; 3 mod
  Patch: https://git.openjdk.org/jdk20u/pull/25.diff
  Fetch: git fetch https://git.openjdk.org/jdk20u.git pull/25/head:pull/25

PR: https://git.openjdk.org/jdk20u/pull/25