git: openjdk/jdk21u-dev: master: 8319372: C2 compilation fails with "Bad immediate dominator info"

[Aleksey Shipilev]

Changeset: b4c163d0
Author:    Aleksey Shipilev <shade at openjdk.org>
Date:      2024-01-17 15:18:32 +0000
URL:       https://git.openjdk.org/jdk21u-dev/commit/b4c163d07b2db96ce91a0f712ced60ace14dbf63

8319372: C2 compilation fails with "Bad immediate dominator info"

Backport-of: 7766785098816cfcdae3479540cdc866c1ed18ad

! src/hotspot/share/opto/castnode.cpp
+ test/hotspot/jtreg/compiler/c2/TestTopCastIIOnUndetectedDeadPath.java
+ test/hotspot/jtreg/compiler/c2/TestTopCastIIOnUndetectedDeadPath2.java
+ test/hotspot/jtreg/compiler/c2/TestTopCastIIOnUndetectedDeadPath3.java