git: openjdk/jdk21u-dev: master: 8321107: Add more test cases for JDK-8319372

[Andrew Lu]

Changeset: c44d4e93
Author:    Andrew Lu <andrewlu at openjdk.org>
Date:      2024-05-21 09:56:22 +0000
URL:       https://git.openjdk.org/jdk21u-dev/commit/c44d4e936f82c502af5745cf1a6495045731b369

8321107: Add more test cases for JDK-8319372

Backport-of: ecd335d8f42757d332f217e220e1a9db8c48c8d6

+ test/hotspot/jtreg/compiler/c2/TestTopCastIIOnUndetectedDeadPath4.java