fast 'instanceof' papers

[Andrew Haley]

Tom Tromey writes:
 > A couple of papers on speeding up 'instanceof', via Lambda the
 > Ultimate:
 > 
 > http://lambda-the-ultimate.org/node/view/1218
 > http://people.csail.mit.edu/jrb/pve/index.htm
 > 
 > At one point I thought we had a plan for implementing this.  I forget
 > what happened to it though.

Worth doing.  _Jv_CheckCast and _Jv_IsAssignableFrom total 3.8% of
total runtime at http://intranet.corp.redhat.com/ic/intranet/opreport

Andrew.