From: Stefan Kangas <stefan@marxist.se>
To: Michael Albinus <michael.albinus@gmx.de>
Cc: Noam Postavsky <npostavs@gmail.com>, 15112@debbugs.gnu.org
Subject: bug#15112: 24.3; package.el byte compile autoloads
Date: Thu, 26 Nov 2020 05:18:36 -0500 [thread overview]
Message-ID: <CADwFkmk_tz0yU95jf7Ceou_Mftxd5g8CNq6cybe+fXEs5agRXw@mail.gmail.com> (raw)
In-Reply-To: <87im9s8nrz.fsf@gmx.de>
Hi Michael,
Michael Albinus <michael.albinus@gmx.de> writes:
>> I made a little experiment and of course byte-compiling these files
>> gives us a ton of headaches, see below. So I'm not sure this is all
>> worth it. Do we have reason to believe that byte-compiling these files
>> would give any significant performance increase?
>>
>> ELC net/tramp-loaddefs.elc
>
> I don't know which kind of experiment you have applied, so I cannot say
> anything about the compilation errors. However, I wonder where paths
> like "net/tramp-loaddefs.elc" come from. We're speaking about
> package.el, meaning we're speaking about ELPA. Tramp in ELPA doesn't use
> any subdirectory "net".
I used this patch:
diff --git a/lisp/emacs-lisp/autoload.el b/lisp/emacs-lisp/autoload.el
index 07bda537b3..e32d74fa7c 100644
--- a/lisp/emacs-lisp/autoload.el
+++ b/lisp/emacs-lisp/autoload.el
@@ -373,7 +373,7 @@ autoload-rubric
";;; Code:\n\n"
(if lp
"(add-to-list 'load-path (directory-file-name
- (or (file-name-directory #$) (car load-path))))\n\n")
+ (or (file-name-directory load-file-name)
(car load-path))))\n\n")
"\f\n"
;; This is used outside of autoload.el, eg cus-dep, finder.
(if feature
@@ -382,7 +382,6 @@ autoload-rubric
(file-name-sans-extension basename))))
";; Local Variables:\n"
";; version-control: never\n"
- ";; no-byte-compile: t\n" ;; #$ is byte-compiled into nil.
";; no-update-autoloads: t\n"
";; coding: utf-8\n"
";; End:\n"
And ran "make bootstrap".
> Anyway, I don't believe we'll see a performance boost after
> byte-compiling loaddef files. They just contain function and variable
> declarations, no implementation (but the initial values of variables).
>
> There are exceptions like in tramp-loaddefs.el, but they still don't
> count wrt performance, I believe.
This would be my guess too. It seems like more trouble than it's worth.
next prev parent reply other threads:[~2020-11-26 10:18 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-08-17 1:04 bug#15112: 24.3; package.el byte compile autoloads Kevin Ryde
2019-08-28 13:15 ` Stefan Kangas
2019-08-28 14:48 ` Noam Postavsky
2020-11-26 2:44 ` Stefan Kangas
2020-11-26 9:34 ` Michael Albinus
2020-11-26 10:18 ` Stefan Kangas [this message]
2020-11-26 11:53 ` Michael Albinus
2021-01-01 18:56 ` Stefan Kangas
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