From: Stefan Monnier <monnier@iro.umontreal.ca>
To: "Mattias Engdegård" <mattiase@acm.org>
Cc: Paul Eggert <eggert@cs.ucla.edu>, Pip Cet <pipcet@gmail.com>,
Emacs developers <emacs-devel@gnu.org>
Subject: Re: Bug#38708: eq vs eql in byte-compiled code
Date: Sat, 04 Jan 2020 14:55:40 -0500 [thread overview]
Message-ID: <jwvo8vj80en.fsf-monnier+emacs@gnu.org> (raw)
In-Reply-To: <613F0F55-EE3E-4A19-9A02-A0CC34172B13@acm.org> ("Mattias Engdegård"'s message of "Thu, 2 Jan 2020 18:26:29 +0100")
> In other words, making bignums/flonums slower may seem to have no bad
> effects, until suddenly it has.
Agreed for flonums, but not for bignums: the bignum-replacements in
Emacs<27 were pretty inefficient, so I think we can use hash-consed
bignums without incurring a performance cost relative to Emacs-26.
IOW hash-cons'd bignums may be slower than "the best bignums we can
have", but they're still faster than the "the best bignums we used to
have".
Stefan
next prev parent reply other threads:[~2020-01-04 19:55 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-12-31 15:07 Bug#38708: eq vs eql in byte-compiled code Pip Cet
2019-12-31 15:51 ` Andrea Corallo
2019-12-31 16:05 ` Mattias Engdegård
2019-12-31 17:38 ` Paul Eggert
2020-01-01 12:38 ` Mattias Engdegård
2020-01-02 8:38 ` Paul Eggert
2020-01-02 17:26 ` Mattias Engdegård
2020-01-04 19:55 ` Stefan Monnier [this message]
2020-01-22 10:56 ` Mattias Engdegård
2020-01-25 0:59 ` Paul Eggert
2020-01-01 15:45 ` Stefan Monnier
2020-01-02 7:52 ` Paul Eggert
2020-01-02 12:27 ` Pip Cet
2020-01-02 23:12 ` Paul Eggert
2020-01-02 13:48 ` Eli Zaretskii
2020-01-04 18:54 ` Stefan Monnier
2020-01-04 19:33 ` Paul Eggert
2020-01-04 19:49 ` Stefan Monnier
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