Shenandoah does not support AOT at this moment, should disable it for now. In addition, added a couple more GC causes, to make test happy. I can back them out, if you prefer another RFR. Webrev: http://cr.openjdk.java.net/~zgu/shenandoah/sh-aot/webrev.00/ Test: tier2_gc_shenandoah. Thanks, -Zhengyu