From: Stefan Monnier <monnier@IRO.UMontreal.CA>
To: Dmitry Gutov <dgutov@yandex.ru>
Cc: 15294@debbugs.gnu.org
Subject: bug#15294: 24.3.50; js2-mode parser is several times slower in lexical-binding mode
Date: Wed, 18 Sep 2013 19:48:48 -0400 [thread overview]
Message-ID: <jwvob7pvgzm.fsf-monnier+emacs@gnu.org> (raw)
In-Reply-To: <jwvzjrly386.fsf-monnier+emacs@gnu.org> (Stefan Monnier's message of "Mon, 09 Sep 2013 22:04:38 -0400")
I now have a tentative patch which introduces new bytecodes for
"catch" which avoid the need to create closures for
lexical-binding code.
Current results:
- dynbind old-bytecode: 0.84s
- dynbind new-bytecode: 0.83s
- lexbind old-bytecode: 2.14s
- lexbind new-bytecode: 0.67s
Of course, code compiled with the new bytecodes won't run on
non-bleeding edge Emacs.
On my "standard test" (i.e. time to recompile all the emacs/lisp files),
the new bytecodes make no measurable difference, so `catch' doesn't seem
to be used very much there.
Similar changes would be welcome for condition-case and
unwind-protect, and since adding new bytecodes is something I'd rather
not do too often (and since there aren't many unused bytecodes left),
I'll try to get a complete patch first to make sure I don't have to
change my mind and use different byte codes.
Stefan
next prev parent reply other threads:[~2013-09-18 23:48 UTC|newest]
Thread overview: 25+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-09-06 20:59 bug#15294: 24.3.50; js2-mode parser is several times slower in lexical-binding mode Dmitry Gutov
2013-09-06 23:44 ` Xue Fuqiao
2013-09-07 3:15 ` Stefan Monnier
2013-09-08 22:32 ` Stefan Monnier
2013-09-10 2:04 ` Stefan Monnier
2013-09-13 3:40 ` Stefan Monnier
2013-09-13 3:59 ` Drew Adams
2013-09-13 4:37 ` Stefan Monnier
2013-09-13 5:45 ` Drew Adams
2013-09-13 13:01 ` Stefan Monnier
2013-09-14 4:20 ` Dmitry Gutov
2013-09-14 14:27 ` Stefan Monnier
2013-09-15 0:11 ` Dmitry Gutov
2013-09-15 5:04 ` Stefan Monnier
2013-09-15 16:54 ` Richard Stallman
2013-09-15 0:24 ` Dmitry Gutov
2013-09-15 5:06 ` Stefan Monnier
2013-09-18 23:48 ` Stefan Monnier [this message]
2013-09-22 4:56 ` Dmitry Gutov
2013-10-03 5:00 ` Stefan Monnier
2013-10-04 2:38 ` Dmitry Gutov
2013-10-04 13:52 ` Stefan Monnier
2013-10-05 3:27 ` Dmitry Gutov
2014-12-14 12:31 ` Dmitry Gutov
2014-12-14 14:08 ` Stefan Monnier
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