From: "Juanma Barranquero" <lekktu@gmail.com>
To: "Stefan Monnier" <monnier@iro.umontreal.ca>
Cc: emacs-devel@gnu.org
Subject: Re: "simplifications"
Date: Mon, 19 Nov 2007 16:39:33 +0100 [thread overview]
Message-ID: <f7ccd24b0711190739k20ae35c5ud4feb7604a039158@mail.gmail.com> (raw)
In-Reply-To: <jwv63zyz37s.fsf-monnier+emacs@gnu.org>
On Nov 19, 2007 4:11 PM, Stefan Monnier <monnier@iro.umontreal.ca> wrote:
> 1 - if you use defsubst* the byte-code will look good.
Nice. Thanks!
> 2 - you can use defstruct to get all that and more.
Yes. It's not my code; it it were, I would be using defstruct. I'm a
big Common Lisp fan.
> 3 - I don't think it's worth the trouble to make the byte-optimizer more
> complex for such little benefit. If you want to improve it, use the
> lexbind branch: it's a much saner starting point.
Isn't that branch supposed to be merged back someday?
> it doesn't account for the case where
> you do
> (defsubst cadr (debug-on-error) (car (cdr debug-on-error)))
> in which case the optimization is not semantics preserving"
And I'n not sure it should... I think I agree with David here: if
you're using defsubst to optimize, you should expect some gotchas.
Juanma
next prev parent reply other threads:[~2007-11-19 15:39 UTC|newest]
Thread overview: 26+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-11-19 10:46 "simplifications" David Kastrup
2007-11-19 10:56 ` "simplifications" Juanma Barranquero
2007-11-19 15:11 ` "simplifications" Stefan Monnier
2007-11-19 15:19 ` "simplifications" David Kastrup
2007-11-19 15:39 ` Juanma Barranquero [this message]
2007-11-19 15:44 ` "simplifications" Stefan Monnier
2007-11-19 15:47 ` "simplifications" Juanma Barranquero
2007-11-19 15:58 ` "simplifications" Stefan Monnier
2007-11-19 16:08 ` "simplifications" Juanma Barranquero
2007-11-19 18:46 ` "simplifications" Stefan Monnier
2007-11-19 16:02 ` "simplifications" David Kastrup
2007-11-19 16:05 ` "simplifications" Juanma Barranquero
2007-11-20 3:59 ` "simplifications" Richard Stallman
2007-11-20 15:27 ` "simplifications" Stefan Monnier
2007-11-21 21:37 ` "simplifications" Stephen J. Turnbull
2007-11-21 21:52 ` "simplifications" David Kastrup
2007-11-22 1:34 ` "simplifications" Stephen J. Turnbull
2007-11-19 11:02 ` "simplifications" Juanma Barranquero
2007-11-19 11:33 ` "simplifications" Miles Bader
2007-11-19 11:57 ` "simplifications" David Kastrup
2007-11-19 12:08 ` "simplifications" Juanma Barranquero
2007-11-19 12:21 ` "simplifications" David Kastrup
2007-11-19 12:32 ` "simplifications" Juanma Barranquero
2007-11-19 12:49 ` "simplifications" David Kastrup
2007-11-19 12:54 ` "simplifications" Juanma Barranquero
2007-11-20 3:59 ` "simplifications" Richard Stallman
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