Hotspot now fails to build on linux-sparc after JDK-8202377 (Modularize C2 barriers) with:

=== Output from failing command(s) repeated here ===
/usr/bin/printf "* For target hotspot_variant-server_libjvm_objs_library_call.o:\n"
* For target hotspot_variant-server_libjvm_objs_library_call.o:
(/bin/grep -v -e "^Note: including file:" < /srv/openjdk/jdk/build/linux-sparcv9-normal-server-release/make-support/failure-logs/hotspot_variant-server_libjvm_objs_library_call.o.log || true) | /usr/bin/head -n 12
/srv/openjdk/jdk/src/hotspot/share/opto/library_call.cpp: In member function ‘bool LibraryCallKit::inline_native_clone(bool)’:
/srv/openjdk/jdk/src/hotspot/share/opto/library_call.cpp:4272:38: error: incomplete type ‘BarrierSet’ used in nested name specifier
       BarrierSetC2* bs = BarrierSet::barrier_set()->barrier_set_c2();
                                      ^~~~~~~~~~~
if test `/usr/bin/wc -l < /srv/openjdk/jdk/build/linux-sparcv9-normal-server-release/make-support/failure-logs/hotspot_variant-server_libjvm_objs_library_call.o.log` -gt 12; then /bin/echo " ... (rest of output omitted)" ; fi
/usr/bin/printf "\n* All command lines available in /srv/openjdk/jdk/build/linux-sparcv9-normal-server-release/make-support/failure-logs.\n"

* All command lines available in /srv/openjdk/jdk/build/linux-sparcv9-normal-server-release/make-support/failure-logs.
/usr/bin/printf "=== End of repeated output ===\n"
=== End of repeated output ===