From: Paul Eggert <eggert@cs.ucla.edu>
To: Daniel Colascione <dancol@dancol.org>, emacs-devel@gnu.org
Subject: Re: [Emacs-diffs] trunk r114452: * data.c (POPCOUNT_STATIC_INLINE): New macro, as a hack for popcount.
Date: Tue, 24 Sep 2013 17:26:51 -0700 [thread overview]
Message-ID: <52422DCB.5060103@cs.ucla.edu> (raw)
In-Reply-To: <52420922.9030305@dancol.org>
Daniel Colascione wrote:
> POPCOUNT_STATIC_INLINE. What problem is it supposed to solve?
It's supposed to solve the performance problem you mentioned,
which it does. It's just a short-term fix until we get
better and more-portable support for popcount in.
(The new code currently doesn't work on OpenBSD, for example.)
Once it's fixed, the other micro-optimization you mentioned
may not even be applicable, not that it has any significant
practical effect even now.
prev parent reply other threads:[~2013-09-25 0:26 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <E1VOTzw-00075i-CU@vcs.savannah.gnu.org>
2013-09-24 21:50 ` [Emacs-diffs] trunk r114452: * data.c (POPCOUNT_STATIC_INLINE): New macro, as a hack for popcount Daniel Colascione
2013-09-25 0:26 ` Paul Eggert [this message]
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