From: Stefan Monnier <monnier@IRO.UMontreal.CA>
To: emacs-devel@gnu.org
Cc: Vibhav Pant <vibhavp@gmail.com>
Subject: Re: [Emacs-diffs] feature/byte-switch c4316a2: ; bytecomp.el (byte-compile-cond-jump-table): Add TODO note
Date: Mon, 06 Feb 2017 10:35:13 -0500 [thread overview]
Message-ID: <jwvlgtj2w8y.fsf-monnier+emacsdiffs@gnu.org> (raw)
In-Reply-To: <20170206140315.229CD220145@vcs.savannah.gnu.org> (Vibhav Pant's message of "Mon, 6 Feb 2017 14:03:14 +0000 (UTC)")
> + ;; TODO: Once :linear-search is implemented for `make-hash-table'
> + ;; set it to `t' for cond forms with a small number of cases.
Indeed, we can probably substantially improve our hash-table performance
for small hash tables (not only in terms of CPU use but also in terms of
memory use).
But rather than a :linear-search keyword to make-hash-table, can't we
just test the value of `count` and use a linear search if it's small?
Stefan
next parent reply other threads:[~2017-02-06 15:35 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <20170206140314.23384.66886@vcs.savannah.gnu.org>
[not found] ` <20170206140315.229CD220145@vcs.savannah.gnu.org>
2017-02-06 15:35 ` Stefan Monnier [this message]
2017-02-06 16:26 ` [Emacs-diffs] feature/byte-switch c4316a2: ; bytecomp.el (byte-compile-cond-jump-table): Add TODO note Clément Pit-Claudel
2017-02-06 16:57 ` Vibhav Pant
2017-02-06 17:27 ` Stefan Monnier
2017-02-06 17:40 ` Stefan Monnier
2017-02-06 18:22 ` Vibhav Pant
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