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 13eabbd: bytecode.c (exec_byte_code): Use h->count instead of HASH_TABLE_SIZE
Date: Thu, 09 Feb 2017 08:58:40 -0500 [thread overview]
Message-ID: <jwvpoir1ndv.fsf-monnier+emacsdiffs@gnu.org> (raw)
In-Reply-To: <20170209134357.C161E25FF6@vcs0.savannah.gnu.org> (Vibhav Pant's message of "Thu, 9 Feb 2017 08:43:57 -0500 (EST)")
> +#ifdef BYTE_CODE_SAFE
> + /* Hash tables for switch are declared with :size set to exact
> + number of cases, so this should always be true. */
> + eassert (HASH_TABLE_SIZE (h) == h->count);
> +#endif
This equality is not needed for safety, only for performance.
IOW you can drop the assert altogether and turn it into a comment.
Stefan
next parent reply other threads:[~2017-02-09 13:58 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <20170209134357.2270.49861@vcs0.savannah.gnu.org>
[not found] ` <20170209134357.C161E25FF6@vcs0.savannah.gnu.org>
2017-02-09 13:58 ` Stefan Monnier [this message]
2017-02-09 16:27 ` [Emacs-diffs] feature/byte-switch 13eabbd: bytecode.c (exec_byte_code): Use h->count instead of HASH_TABLE_SIZE Vibhav Pant
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