From: Paul Eggert <eggert@cs.ucla.edu>
To: Daniel Colascione <dancol@dancol.org>
Cc: emacs-devel@gnu.org
Subject: Re: [Emacs-diffs] trunk r114593: * lisp.h (eassert): Don't use 'assume'.
Date: Sat, 12 Oct 2013 00:37:03 -0700 [thread overview]
Message-ID: <5258FC1F.8080603@cs.ucla.edu> (raw)
In-Reply-To: <52581C44.5070207@dancol.org>
Daniel Colascione wrote:
> I haven't seen a single instance of a correct, side-effect-free assume resulting in incorrect code generation.
As far as I could tell, the generated code wasn't incorrect,
it was merely slower. I didn't measure the performance, but
the generated code did look worse (I could have been mistaken
of course).
Have you measured the user-visible performance of Emacs when
it internally uses eassume rather than eassert? Is there
a significant performance improvement? If not, perhaps we
should omit eassume, as not being worth the trouble.
next prev parent reply other threads:[~2013-10-12 7:37 UTC|newest]
Thread overview: 21+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <E1VTxwB-0001h8-7E@vcs.savannah.gnu.org>
2013-10-11 2:31 ` [Emacs-diffs] trunk r114593: * lisp.h (eassert): Don't use 'assume' Daniel Colascione
2013-10-11 6:36 ` Paul Eggert
2013-10-11 7:00 ` Eli Zaretskii
2013-10-11 7:41 ` Daniel Colascione
2013-10-11 8:08 ` Eli Zaretskii
2013-10-11 8:19 ` Daniel Colascione
2013-10-11 8:59 ` Stephen J. Turnbull
2013-10-11 9:10 ` Daniel Colascione
2013-10-11 10:27 ` Stephen J. Turnbull
2013-10-11 12:42 ` Stefan Monnier
2013-10-11 15:24 ` Stephen J. Turnbull
2013-10-11 9:06 ` Eli Zaretskii
2013-10-11 9:18 ` Daniel Colascione
2013-10-11 9:36 ` Eli Zaretskii
2013-10-11 9:55 ` Daniel Colascione
2013-10-11 10:31 ` Dmitry Antipov
2013-10-11 15:22 ` Paul Eggert
2013-10-11 15:41 ` Daniel Colascione
2013-10-12 7:37 ` Paul Eggert [this message]
2013-10-11 11:19 ` Eli Zaretskii
2013-10-11 15:57 ` Daniel Colascione
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