hg: jdk/jdk12: 8215947: JVM crash with -XX:+DumpSharedSpaces

[calvin.cheung at oracle.com]

Changeset: 6a25433b30ed
Author:    ccheung
Date:      2019-01-03 14:33 -0800
URL:       http://hg.openjdk.java.net/jdk/jdk12/rev/6a25433b30ed

8215947: JVM crash with -XX:+DumpSharedSpaces
Summary: disable JIT compilation if -XX:+DumpSharedSpaces is specified by the user
Reviewed-by: lfoltan, jiangli

! src/hotspot/share/runtime/arguments.cpp
! test/hotspot/jtreg/runtime/SharedArchiveFile/SharedArchiveFile.java