git: openjdk/jdk17u-dev: 8271056: C2: "assert(no_dead_loop) failed: dead loop detected" due to cmoving identity

[Goetz Lindenmaier]

Changeset: 27cbe247
Author:    Goetz Lindenmaier <goetz at openjdk.org>
Date:      2022-02-03 08:36:53 +0000
URL:       https://git.openjdk.java.net/jdk17u-dev/commit/27cbe247e6934faa66ff56ff19e1d77b7752a973

8271056: C2: "assert(no_dead_loop) failed: dead loop detected" due to cmoving identity

Backport-of: 54481394a3b7d36b2326e22e4aa910a3e8041b5c

! src/hotspot/share/opto/cfgnode.cpp
+ test/hotspot/jtreg/compiler/c2/TestDeadDataLoopCmoveIdentity.java