From: Lynn Winebarger <owinebar@gmail.com>
To: Stefan Monnier <monnier@iro.umontreal.ca>
Cc: Eli Zaretskii <eliz@gnu.org>, Po Lu <luangruo@yahoo.com>,
Alan Mackenzie <acm@muc.de>, emacs-devel <emacs-devel@gnu.org>,
Yuan Fu <casouri@gmail.com>
Subject: Re: Ideal performance of ELisp
Date: Wed, 17 Aug 2022 10:25:52 -0400 [thread overview]
Message-ID: <CAM=F=bBoF5NiwMFH8B_ZiC5e3ecLKUcd_B6a_9hZiWGjnzzMLA@mail.gmail.com> (raw)
In-Reply-To: <jwv1qtfarxj.fsf-monnier+emacs@gnu.org>
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On Wed, Aug 17, 2022, 10:04 AM Stefan Monnier <monnier@iro.umontreal.ca>
wrote:
> >> Not sure how well it works for very large tables where we risk bumping
> >> into the 32K limit of bytecode jumps.
> > That did occur to me.
> > Perhaps one way to address that limitation without completely
> > overhauling the VM would be to introduce a form of segmented memory
> > for byte strings.
>
> IIRC the limitation is only in the size of relative jumps, so we might
> be able to fix it just by adding a new "longbranch" instruction,
The issue there is that (IIRC) the relative branch opcodes haven't been
used since v20, and are marked as obsolete/slated for removal. So, the
compiler would have to be altered to use long branches initially, with some
later phase replacing them with either relative or short absolute branch
codes currently emitted if applicable. The trampoline extension wouldn't
require alterations to any construct that is already correctly compiled.
The other potential bonus of the trampoline approach is that it could be
used to "link" byte code vectors at some point in the future or provide a
form of compilation unit for byte-code.
Lynn
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next prev parent reply other threads:[~2022-08-17 14:25 UTC|newest]
Thread overview: 136+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-08-06 20:13 Major modes using `widen' is a good, even essential, programming practice Alan Mackenzie
2022-08-06 21:05 ` Stefan Monnier
2022-08-07 6:03 ` Eli Zaretskii
2022-08-07 13:31 ` Gregory Heytings
2022-08-07 14:13 ` Alan Mackenzie
2022-08-07 14:20 ` Eli Zaretskii
2022-08-07 14:59 ` Alan Mackenzie
2022-08-07 15:13 ` Eli Zaretskii
2022-08-07 17:01 ` Alan Mackenzie
2022-08-07 17:23 ` Eli Zaretskii
2022-08-07 17:53 ` Dmitry Gutov
2022-08-07 18:00 ` Eli Zaretskii
2022-08-07 18:05 ` Dmitry Gutov
2022-08-07 18:37 ` Eli Zaretskii
2022-08-07 23:02 ` Stefan Monnier
2022-08-07 18:49 ` Óscar Fuentes
2022-08-07 18:59 ` Eli Zaretskii
2022-08-07 18:56 ` Lars Ingebrigtsen
2022-08-07 19:20 ` Alan Mackenzie
2022-08-07 19:26 ` Dmitry Gutov
2022-08-08 2:36 ` Eli Zaretskii
2022-08-08 9:58 ` Alan Mackenzie
2022-08-08 11:39 ` Eli Zaretskii
2022-08-08 15:05 ` CC Mode with font-lock-maximum-decoration 2 [Was Major modes using `widen' is a good, even essential, programming practice.] Alan Mackenzie
2022-08-08 15:51 ` Gregory Heytings
2022-08-08 16:05 ` CC Mode with font-lock-maximum-decoration 2 Alan Mackenzie
2022-08-08 16:50 ` Gregory Heytings
2022-08-09 19:49 ` Gregory Heytings
2022-08-08 17:15 ` CC Mode with font-lock-maximum-decoration 2 [Was Major modes using `widen' is a good, even essential, programming practice.] Eli Zaretskii
2022-08-08 17:41 ` Eli Zaretskii
2022-08-08 18:41 ` CC Mode with font-lock-maximum-decoration 2 Alan Mackenzie
2022-08-08 18:51 ` Eli Zaretskii
2022-08-08 19:09 ` Alan Mackenzie
2022-08-09 2:24 ` Eli Zaretskii
2022-08-09 8:00 ` Alan Mackenzie
2022-08-09 11:07 ` Eli Zaretskii
2022-08-09 11:24 ` Alan Mackenzie
2022-08-09 11:57 ` Eli Zaretskii
2022-08-09 16:36 ` Alan Mackenzie
2022-08-09 16:59 ` Eli Zaretskii
2022-08-09 17:43 ` Alan Mackenzie
2022-08-09 17:55 ` Eli Zaretskii
2022-08-10 0:22 ` Why tree-sitter instead of Semantic? (was Re: CC Mode with font-lock-maximum-decoration 2) Lynn Winebarger
2022-08-10 2:14 ` Po Lu
2022-08-10 2:42 ` Eli Zaretskii
2022-08-10 10:05 ` Lynn Winebarger
2022-08-10 10:49 ` Po Lu
2022-08-10 11:31 ` Eli Zaretskii
2022-08-12 12:37 ` Lynn Winebarger
2022-08-12 12:50 ` Eli Zaretskii
2022-08-12 21:50 ` Ideal performance of ELisp (was: Why tree-sitter instead of Semantic? (was Re: CC Mode with font-lock-maximum-decoration 2)) Stefan Monnier
2022-08-12 23:26 ` Lynn Winebarger
2022-08-13 2:11 ` Ideal performance of ELisp Stefan Monnier
2022-08-13 10:51 ` Lynn Winebarger
2022-08-13 11:13 ` Lynn Winebarger
2022-08-13 14:07 ` Stefan Monnier
2022-08-13 14:56 ` Lynn Winebarger
2022-08-16 16:46 ` Lynn Winebarger
2022-08-16 17:22 ` Stefan Monnier
2022-08-17 12:41 ` Lynn Winebarger
2022-08-17 14:04 ` Stefan Monnier
2022-08-17 14:19 ` Mattias Engdegård
2022-08-17 22:18 ` Stefan Monnier
2022-08-17 14:25 ` Lynn Winebarger [this message]
2022-08-13 4:39 ` Ideal performance of ELisp (was: Why tree-sitter instead of Semantic? (was Re: CC Mode with font-lock-maximum-decoration 2)) Ihor Radchenko
2022-08-13 7:45 ` Ideal performance of ELisp Philip Kaludercic
2022-08-13 11:58 ` Ihor Radchenko
2022-08-13 14:15 ` Stefan Monnier
2022-08-14 9:25 ` Andrea Corallo
2022-08-14 9:34 ` Ihor Radchenko
2022-08-14 13:01 ` Eli Zaretskii
2022-08-16 19:23 ` Andrea Corallo
2022-08-14 13:01 ` Stefan Monnier
2022-08-16 8:59 ` Andrea Corallo
2022-08-16 9:50 ` Ihor Radchenko
2022-08-16 18:21 ` Andrea Corallo
2022-08-17 9:48 ` Ihor Radchenko
2022-08-17 12:02 ` Eli Zaretskii
2022-08-16 15:06 ` Lynn Winebarger
2022-08-16 18:24 ` Andrea Corallo
2022-08-17 13:04 ` Lynn Winebarger
2022-08-17 14:18 ` Andrea Corallo
2022-08-18 12:17 ` Lynn Winebarger
2022-08-12 16:00 ` Why tree-sitter instead of Semantic? (was Re: CC Mode with font-lock-maximum-decoration 2) Akib Azmain Turja
2022-08-12 19:06 ` tomas
2022-08-13 4:41 ` Akib Azmain Turja
2022-08-13 5:14 ` tomas
2022-08-13 11:57 ` Lynn Winebarger
2022-08-13 14:28 ` Akib Azmain Turja
2022-08-14 19:24 ` Eric Ludlam
2022-08-16 10:42 ` Lynn Winebarger
2022-08-17 1:56 ` Eric Ludlam
2022-08-10 17:03 ` Tassilo Horn
2022-08-13 14:40 ` Jostein Kjønigsen
2022-08-14 1:23 ` Po Lu
2022-08-16 9:06 ` Lynn Winebarger
2022-08-16 11:05 ` Po Lu
2022-08-16 11:41 ` Eli Zaretskii
2022-08-16 16:33 ` Lynn Winebarger
2022-08-16 17:19 ` Stefan Monnier
2022-08-16 17:40 ` Lynn Winebarger
2022-08-17 1:41 ` Eric Ludlam
2022-08-18 12:34 ` Lynn Winebarger
2022-08-20 13:15 ` Eric Ludlam
2022-08-08 18:20 ` CC Mode with font-lock-maximum-decoration 2 Alan Mackenzie
2022-08-07 20:17 ` Major modes using `widen' is a good, even essential, programming practice Gregory Heytings
2022-08-07 20:46 ` Alan Mackenzie
2022-08-07 20:53 ` Gregory Heytings
2022-08-08 2:37 ` Eli Zaretskii
2022-08-08 10:33 ` Alan Mackenzie
2022-08-08 11:41 ` Eli Zaretskii
2022-08-07 23:21 ` Stefan Monnier
2022-08-08 2:29 ` Eli Zaretskii
2022-08-08 9:25 ` Stefan Monnier
2022-08-08 11:16 ` Lynn Winebarger
2022-08-08 11:47 ` Eli Zaretskii
2022-08-08 14:24 ` Lynn Winebarger
2022-08-08 11:30 ` Eli Zaretskii
2022-08-08 12:05 ` Stefan Monnier
2022-08-08 12:40 ` Eli Zaretskii
2022-08-08 17:22 ` Stefan Monnier
2022-08-08 17:34 ` Eli Zaretskii
2022-08-08 21:16 ` Dmitry Gutov
2022-08-09 11:30 ` Eli Zaretskii
2022-08-09 14:38 ` Dmitry Gutov
2022-08-09 16:12 ` Eli Zaretskii
2022-08-09 16:52 ` Dmitry Gutov
2022-08-09 17:05 ` Eli Zaretskii
2022-08-09 18:52 ` Dmitry Gutov
2022-08-09 19:46 ` Gregory Heytings
2022-08-08 10:38 ` Alan Mackenzie
2022-08-08 11:49 ` Eli Zaretskii
2022-08-08 10:41 ` Gregory Heytings
2022-08-07 17:57 ` Dmitry Gutov
2022-08-22 11:26 ` Alan Mackenzie
2022-08-22 23:59 ` Dmitry Gutov
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