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From: "Harrison, John R" <johnh@ichips.intel.com>
To: "Damien Doligez" <damien.doligez@inria.fr>,
	"caml-list" <caml-list@inria.fr>
Subject: RE: [Caml-list] Are you sure the new "=" of 3.08 is good ?
Date: Sat, 9 Oct 2004 10:56:12 -0700	[thread overview]
Message-ID: <012676D607FCF54E986746512C22CE7D0FE7BD@orsmsx407> (raw)

| What I did in my soon-to-be-released automatic prover, following
| advice from Pierre Weis, was to hash-cons all the terms used by the
| program.  Now I only need to use pointer equality: if the pointers
| are not the same then I know the terms are not the same.  The speedup
| was a factor of 100 because my program does lots of comparisons and
| hashing of terms.

Yes, it might well be worth looking at that again. I tried it once
in CAML Light and the results were disappointing. But one reason was
that something like weak pointers either didn't exist or I didn't
know about them, so my hash tables rendered some ephemeral stuff 
non-collectible.

I'll look forward to the release of your prover!

John.

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             reply	other threads:[~2004-10-09 17:56 UTC|newest]

Thread overview: 15+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2004-10-09 17:56 Harrison, John R [this message]
  -- strict thread matches above, loose matches on Subject: below --
2004-10-09 18:10 Harrison, John R
2004-10-08 16:35 Harrison, John R
2004-10-08 17:34 ` Damien Doligez
2004-10-09  8:58 ` Xavier Leroy
2004-10-08 16:25 Harrison, John R
2004-10-08  2:54 Harrison, John R
2004-10-08  5:49 ` Christophe Raffalli
2004-10-08  6:54   ` David Brown
2004-10-07 21:14 Christophe Raffalli
2004-10-08  7:38 ` Jean-Christophe Filliatre
2004-10-08  8:31   ` Christophe Raffalli
2004-10-08 15:10     ` Damien Doligez
2004-10-08  9:37 ` Sébastien Furic
2004-10-08 15:54 ` Xavier Leroy

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