git: openjdk/jdk: 8293978: Duplicate simple loop back-edge will crash the vm

[Jie Fu]

Changeset: cb72f809
Author:    casparcwang <casparcwang at tencent.com>
Committer: Jie Fu <jiefu at openjdk.org>
Date:      2022-09-21 06:24:19 +0000
URL:       https://git.openjdk.org/jdk/commit/cb72f80925965c73e32c44ce3196866272306d7f

8293978: Duplicate simple loop back-edge will crash the vm

Reviewed-by: roland, chagedorn

! src/hotspot/share/opto/loopopts.cpp
+ test/hotspot/jtreg/compiler/c2/TestDuplicateSimpleLoopBackedge.java