🚀 go-pugleaf

[Hankk Dietz writes:]
>Many optimizing-compiler writers have considered improving the
>compiler's analysis by using stats collected by trial executions, but
>it rarely helps.  Statistics based on runtime data are notoriously
>unstable.

Woah!  The group that I am peripherally associated with at the
University of Illinois has been using runtime feedback to compiler
optimization for a while (see Hwu and Chang, or Hwu, Conte, and
Chang's papers in the most recent Int'l Symp on Computer Architecture)
and getting good results.  I think it depends on what questions you
expect to answer with the runtime stats, and what sort of "trials" 
they are collected from.
--
Andy "Krazy" Glew,  Motorola MCD,    	    	    aglew@urbana.mcd.mot.com
1101 E. University, Urbana, IL 61801, USA.          {uunet!,}uiucuxc!udc!aglew
   
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