From: Tom Tromey <tom@tromey.com>
To: emacs-devel@gnu.org
Subject: Re: Emacs Lisp JIT Compiler
Date: Wed, 12 Sep 2018 22:32:06 -0600 [thread overview]
Message-ID: <87musmhvax.fsf@tromey.com> (raw)
In-Reply-To: <8736uealb1.fsf@gmail.com> (Robert Pluim's message of "Wed, 12 Sep 2018 15:37:38 +0200")
>> Yes, el-compilador is pretty unfinished. I think it should support
>> all of elisp in the front end and in the optimizers; but the C back end
>> is quite incomplete.
>>
Robert> OK. Iʼm assuming completing the C back end is just a SMP? :-)
Yeah, for some value of S. The github repo has some bugs if you're
interested. Also you can pretty much pick a random, real elisp program,
compile it, and find failures, usually in the C back end. I've got an
Emacs branch where I tried rewriting bits of C to elisp and then compile
them back to C; and IIRC I had to skip some functions for this reason.
Not to talk down el-compilador. It has some nice things that are more
of a pain to do in something like the bytecode->C compiler. For example
it can apply type inference along one side of a conditional.
>> I wrote a second compiler, though, that just compiles from bytecode to
>> C. This one is more complete, see my post about it from sometime in the
>> last month or so. IIRC wiring it up to the build was the remaining
>> difficulty.
Robert> I saw that, but I donʼt remember if you said where youʼd put it. I
Robert> couldnʼt see a likely branch in the savannah emacs git repository.
It's in my github in the feature/bytecode-c branch.
The C generation is ok but the rest isn't finished. It is tricky to
associate the compiled C code with the Lisp defun. Also see my other
post about it, it doubles (IIRC) the size of the executable.
You may recall that I was also looking at gcc-jit. I have partially
done this translation but I got stalled by my illness. I'm not sure if
I'll return to it, mostly because libjit is sounding perhaps more
attractive here on emacs-devel.
Tom
next prev parent reply other threads:[~2018-09-13 4:32 UTC|newest]
Thread overview: 60+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-08-13 4:01 Emacs Lisp JIT Compiler Tom Tromey
2018-08-13 5:37 ` Paul Eggert
2018-08-13 15:15 ` Tom Tromey
2018-08-14 0:16 ` Tom Tromey
2018-08-14 20:11 ` Daniel Colascione
2018-08-14 20:55 ` Paul Eggert
2018-08-14 21:03 ` Daniel Colascione
2018-08-14 22:38 ` Paul Eggert
2018-08-15 16:41 ` Eli Zaretskii
2018-08-15 17:16 ` Paul Eggert
2018-08-15 17:47 ` Eli Zaretskii
2018-08-16 0:29 ` Tom Tromey
2018-08-16 13:26 ` Eli Zaretskii
2018-08-16 15:43 ` Daniel Colascione
2018-08-16 16:22 ` Andreas Schwab
2018-08-19 18:17 ` Tom Tromey
2018-08-19 19:00 ` Eli Zaretskii
2018-08-19 19:16 ` Tom Tromey
2018-08-19 20:23 ` Stefan Monnier
2018-08-18 10:10 ` Steinar Bang
2018-08-18 11:31 ` Eli Zaretskii
2018-08-19 10:00 ` Robert Pluim
2018-08-19 15:01 ` Eli Zaretskii
2018-08-19 15:26 ` Tom Tromey
2018-08-23 0:47 ` Tom Tromey
2018-08-23 16:48 ` Eli Zaretskii
2018-08-24 17:54 ` Tom Tromey
2018-08-24 20:23 ` Eli Zaretskii
2018-08-24 21:03 ` Tom Tromey
2018-08-25 6:51 ` Eli Zaretskii
2018-09-10 11:03 ` Ergus
2018-09-10 11:15 ` Robert Pluim
2018-09-10 11:53 ` Tom Tromey
2018-09-12 13:37 ` Robert Pluim
2018-09-13 4:32 ` Tom Tromey [this message]
2018-08-16 0:03 ` Tom Tromey
2018-08-16 2:45 ` Eli Zaretskii
2018-08-16 18:07 ` Eli Zaretskii
2018-08-13 13:50 ` T.V Raman
2018-08-13 15:18 ` Tom Tromey
2018-08-13 15:23 ` T.V Raman
2018-08-13 15:15 ` Eli Zaretskii
2018-08-20 21:54 ` John Wiegley
2018-08-13 23:31 ` Richard Stallman
2018-08-13 23:51 ` Tom Tromey
2018-08-16 2:42 ` Richard Stallman
2018-08-15 0:21 ` Clément Pit-Claudel
2018-08-16 0:32 ` Tom Tromey
2018-08-16 2:14 ` Clément Pit-Claudel
-- strict thread matches above, loose matches on Subject: below --
2016-12-11 17:37 Nickolas Lloyd
2016-12-12 6:07 ` John Wiegley
2016-12-12 11:51 ` Nickolas Lloyd
2016-12-12 16:45 ` John Wiegley
2016-12-23 17:22 ` Nickolas Lloyd
2016-12-13 22:24 ` Johan Bockgård
2016-12-05 18:16 Burton Samograd
2016-12-05 18:40 ` Eli Zaretskii
2016-12-05 19:32 ` Daniel Colascione
2016-12-05 21:03 ` Burton Samograd
2016-12-06 15:54 ` Lluís
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