git: openjdk/jdk11u-dev: 8268261: C2: assert(n != __null) failed: Bad immediate dominator info.

[Zhengyu Gu]

Changeset: 4da3fb81
Author:    Zhengyu Gu <zgu at openjdk.org>
Date:      2021-08-03 13:23:16 +0000
URL:       https://git.openjdk.java.net/jdk11u-dev/commit/4da3fb8158242b6d7720a299311e652fcf56b854

8268261: C2: assert(n != __null) failed: Bad immediate dominator info.

Reviewed-by: kvn, phh
Backport-of: 4ed548b3eeffe8dfa601d4d0eeed2bfe359af965

! src/hotspot/share/opto/loopTransform.cpp
+ test/hotspot/jtreg/compiler/loopopts/TestIdomAfterLoopUnswitching.java