fastdebug build fails with this hs_err:
  http://cr.openjdk.java.net/~shade/8203699/hs_err-1.log

# SIGILL (0x4) at pc=0x0000ffff94dba74c, pid=18011, tid=18022

  0x0000ffff94dba744: str x11, [x10,#32]
  0x0000ffff94dba748: b 0x0000ffff94dba750
  0x0000ffff94dba74c: hlt #0x0 <----- here
  0x0000ffff94dba750: ldr w12, [xmethod,#36]
  0x0000ffff94dba754: ldr xmethod, [xmethod,#16]

This seems to be the proper hlt failure due to failing check in VerifyMethodHandles block at MethodHandles::generate_method_handle_dispatch:

      if (VerifyMethodHandles && iid != vmIntrinsics::_linkToInterface) {
        Label L_ok;
        Register temp2_defc = temp2;
        __ load_heap_oop(temp2_defc, member_clazz, temp3);
        load_klass_from_Class(_masm, temp2_defc);
        __ verify_klass_ptr(temp2_defc);
        __ check_klass_subtype(temp1_recv_klass, temp2_defc, temp3, L_ok);
        // If we get here, the type check failed!
        __ hlt(0);
        // __ STOP("receiver class disagrees with MemberName.clazz");
        __ bind(L_ok);
      }
      BLOCK_COMMENT("} check_receiver");