Java crash when executed with following options on Linux-x64 platform:
java -Xcomp -XX:AliasLevel=1

Here are output for Java 9 b61 product build(hs_err_pid3659.log and replay_pid3659.log files are attached):
#
# A fatal error has been detected by the Java Runtime Environment:
#
# SIGSEGV (0xb) at pc=0x00007f15321e7a4e, pid=3659, tid=139728591959808
#
# JRE version: Java(TM) SE Runtime Environment (9.0-b61) (build 1.9.0-ea-b61)
# Java VM: Java HotSpot(TM) 64-Bit Server VM (1.9.0-ea-b61 compiled mode linux-amd64 compressed oops)
# Problematic frame:
# V [libjvm.so+0x788a4e] PhaseIdealLoop::build_loop_late_post(Node*)+0x13e
#
# Core dump written. Default location: Core dumps may be processed with "/usr/share/apport/apport %p %s %c" (or dumping to /home/dmitry/bundles/jdk9/b61/bin/core.3659)
#
# An error report file with more information is saved as:
# /home/dmitry/bundles/jdk9/b61/bin/hs_err_pid3659.log
...

Java 8u45 are also affected(similar error message, hs_err_pid3693.log and replay_pid3693.log attached).