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From: davidsen@steinmetz.ge.com (William E. Davidsen Jr)
Newsgroups: comp.unix.wizards
Subject: Re: C optimizer
Keywords: C pure function optimization
Message-ID: <13333@steinmetz.ge.com>
Date: 9 Mar 89 14:28:01 GMT
References: <515@larry.UUCP> <9648@smoke.BRL.MIL> <36034@bbn.COM> <1028@frog.UUCP> <1464@mcgill-vision.UUCP>
Reply-To: davidsen@crdos1.UUCP (bill davidsen)
Organization: General Electric CRD, Schenectady, NY
Lines: 15

Our old Heneywell system had a FORTRAN optimizer which would pass over
the source code and emit restructured source code with global
optimizations performed. The main thing it did was pull things out of
loops, I believe, but I haven't used it in ten years or so.

Question: has anyone done a similar thing for C? It seems like a
reasonable thing to do, given all of the non-optimizing and peephole
optimizing compilers in the world.

Yes, I know you can do a better job with a builtin optimizer in the
compiler, that's NOT the question.
-- 
	bill davidsen		(wedu@ge-crd.arpa)
  {uunet | philabs}!steinmetz!crdos1!davidsen
"Stupidity, like virtue, is its own reward" -me