git: openjdk/jdk: 8305189: C2 failed "assert(_outcnt==1) failed: not unique"

[Roland Westrelin]

Changeset: bac02b6e
Author:    Roland Westrelin <roland at openjdk.org>
Date:      2023-05-26 09:04:31 +0000
URL:       https://git.openjdk.org/jdk/commit/bac02b6e9d9e1e93db27c7888188f29631e07f47

8305189: C2 failed "assert(_outcnt==1) failed: not unique"

Reviewed-by: chagedorn, thartmann

! src/hotspot/share/opto/loopnode.cpp
! src/hotspot/share/opto/loopnode.hpp
! src/hotspot/share/opto/opaquenode.cpp
! src/hotspot/share/opto/opaquenode.hpp
+ test/hotspot/jtreg/compiler/loopopts/TestZeroTripGuardShared.java