From: Damien Doligez <damien.doligez@inria.fr>
To: caml-list <caml-list@inria.fr>
Subject: Re: [Caml-list] Are you sure the new "=" of 3.08 is good ?
Date: Fri, 8 Oct 2004 19:34:16 +0200 [thread overview]
Message-ID: <46D97B42-1950-11D9-A204-00039310CAE8@inria.fr> (raw)
In-Reply-To: <012676D607FCF54E986746512C22CE7D0FE7B8@orsmsx407>
On Oct 8, 2004, at 18:35, Harrison, John R wrote:
> For LCF-style theorem provers, I think it's quite important that when
> comparing terms (or similar tree structures) for equality, there should
> be a quick "yes" when two high-level subgraphs are pointer eq. For
> example,
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.
-- Damien
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next prev parent reply other threads:[~2004-10-08 17:34 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-10-08 16:35 Harrison, John R
2004-10-08 17:34 ` Damien Doligez [this message]
2004-10-09 8:58 ` Xavier Leroy
-- strict thread matches above, loose matches on Subject: below --
2004-10-09 18:10 Harrison, John R
2004-10-09 17:56 Harrison, John R
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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