From mboxrd@z Thu Jan  1 00:00:00 1970
Subject: Re: [9fans] some of you guys clearly need something else to think about.
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From: Rob Pike <rob@mightycheese.com>
To: 9fans@cse.psu.edu
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In-Reply-To: <200310071438.h97EcMcc015212@ratthing-b246.strakt.com>
Message-Id: <817F1598-F8DF-11D7-B395-000A95B984D8@mightycheese.com>
Date: Tue,  7 Oct 2003 09:01:26 -0700
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JIT is even older than that.  there was an HP implementation of APL in
the
70's that did several layers of optimization on loops. first it
interpreted them,
then if they were busy it did some collapsing, then if it stayed busy
it did some
more, then finally it compiled to bare, highly optimized code.  i
wished i
remembered the details.  maybe it wasn't done at HP but for an HP
machine
at BNR.  not sure any more.

-rob