hg: jdk/submit: 8250548: libgraal can deadlock in -Xcomp mode

[doug.simon at oracle.com]

Changeset: d7c82394c54c
Author:    dnsimon
Date:      2020-07-25 08:41 +0200
URL:       https://hg.openjdk.java.net/jdk/submit/rev/d7c82394c54c

8250548: libgraal can deadlock in -Xcomp mode
Reviewed-by: never, kvn

! src/hotspot/share/compiler/compileBroker.cpp