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Re: Compiling Elisp to a native code with a GCC plugin
From: |
Lars Magne Ingebrigtsen |
Subject: |
Re: Compiling Elisp to a native code with a GCC plugin |
Date: |
Thu, 16 Sep 2010 19:01:18 +0200 |
User-agent: |
Gnus/5.110011 (No Gnus v0.11) Emacs/24.0.50 (gnu/linux) |
"Stephen J. Turnbull" <address@hidden> writes:
> Does every one-line function need to be a built-in?
>
> (defun is-the-string-following-point-equal-to-this-string-p (s)
> (string= s (buffer-substring (point) (+ (point) (length s)))))
>
> or
>
> (defun is-the-string-following-point-equal-to-this-string-p (s)
> (search-forward s (+ (point) (length s)) t))
Does everything have to be slow? :-)
The first one (in addition to not really working all that well) makes
a benchmark of
(benchmark 10000 (goto-char (point-min)) (while (or (s (buffer-substring
(point) (+ (point) (length "(defun "))) "(defun ") (search-forward "\n(defun "
nil t)) (forward-line 1)))
take 24 seconds, while the non-consing version takes 9 seconds. The
latter version is only 50% slower than the single-search-forward
version.
--
(domestic pets only, the antidote for overdose, milk.)
address@hidden * Lars Magne Ingebrigtsen
- Re: Compiling Elisp to a native code with a GCC plugin, (continued)
- Re: Compiling Elisp to a native code with a GCC plugin, Lars Magne Ingebrigtsen, 2010/09/16
- Re: Compiling Elisp to a native code with a GCC plugin, Eli Zaretskii, 2010/09/17
- Re: Compiling Elisp to a native code with a GCC plugin, Lars Magne Ingebrigtsen, 2010/09/17
- Re: Compiling Elisp to a native code with a GCC plugin, Eli Zaretskii, 2010/09/17
- Re: Compiling Elisp to a native code with a GCC plugin, Lars Magne Ingebrigtsen, 2010/09/17
- Re: Compiling Elisp to a native code with a GCC plugin, Lars Magne Ingebrigtsen, 2010/09/16
- Re: Compiling Elisp to a native code with a GCC plugin, Stephen J. Turnbull, 2010/09/15
- Re: Compiling Elisp to a native code with a GCC plugin, David Kastrup, 2010/09/16
- Re: Compiling Elisp to a native code with a GCC plugin, Stephen J. Turnbull, 2010/09/16
- Re: Compiling Elisp to a native code with a GCC plugin, David Kastrup, 2010/09/16
- Re: Compiling Elisp to a native code with a GCC plugin,
Lars Magne Ingebrigtsen <=
- Re: Compiling Elisp to a native code with a GCC plugin, Stephen J. Turnbull, 2010/09/17
- Re: Compiling Elisp to a native code with a GCC plugin, Lars Magne Ingebrigtsen, 2010/09/17
- Re: Compiling Elisp to a native code with a GCC plugin, David Kastrup, 2010/09/17
- Re: Compiling Elisp to a native code with a GCC plugin, Lars Magne Ingebrigtsen, 2010/09/17
- Re: Compiling Elisp to a native code with a GCC plugin, David Kastrup, 2010/09/17
- Re: Compiling Elisp to a native code with a GCC plugin, Lars Magne Ingebrigtsen, 2010/09/17
- Re: Compiling Elisp to a native code with a GCC plugin, David Kastrup, 2010/09/17
- Re: Compiling Elisp to a native code with a GCC plugin, Lars Magne Ingebrigtsen, 2010/09/17
- Re: Compiling Elisp to a native code with a GCC plugin, Lars Magne Ingebrigtsen, 2010/09/17
- Re: Compiling Elisp to a native code with a GCC plugin, Eli Zaretskii, 2010/09/17