Running JVM built for PPC64LE with --enable-debug option results in internal error:
$ images/jdk/bin/java -Xcomp
PPC assembly code requires stop: (stop) SharedRuntime::generate_deopt_blob: expected Unpack_uncommon_trap
# To suppress the following error report, specify this argument
# after -XX: or in .hotspotrc: SuppressErrorAt=/macroAssembler_ppc.cpp:4287
#
# A fatal error has been detected by the Java Runtime Environment:
#
# Internal Error (/home/asmundak/jdk9/hs-comp/hotspot/src/cpu/ppc/vm/macroAssembler_ppc.cpp:4287), pid=52254, tid=52255
# guarantee(false) failed: PPC assembly code requires stop: SharedRuntime::generate_deopt_blob: expected Unpack_uncommon_trap
#
# JRE version: OpenJDK Runtime Environment (9.0) (build 1.9.0-internal-fastdebug-asmundak_2015_11_16_15_45-b00)
# Java VM: OpenJDK 64-Bit Server VM (1.9.0-internal-fastdebug-asmundak_2015_11_16_15_45-b00, compiled mode, compressed oops, g1 gc, linux-ppc64)
# Core dump will be written. Default location: /home/asmundak/builds/jdk9/hs-comp.debug/core

I believe this is due to typo introduced in the http://hg.openjdk.java.net/jdk9/hs-comp/hotspot/rev/9dbae662b09d