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Re: Compilation to native
From: |
Stefan Monnier |
Subject: |
Re: Compilation to native |
Date: |
13 Apr 2004 13:32:37 -0400 |
User-agent: |
Gnus/5.09 (Gnus v5.9.0) Emacs/21.3.50 |
>> > This optimisation more than doubles the speed of the generated
>> > function. The optimisation adds two new byte operations. As a start
>> > the new operations always take parameters that are four bytes wide. I
>> > think the loading of these four bytes is the cause of the slower byte
>> > interpretation.
>> I don't understand. Could you give us more info about what those new byte
>> ops are and what they're used for (and maybe why you think they make things
>> slower in the byte-interpreter, tho I should be able to figure that out on
>> my own at that point).
> The optimisation moves variable referencing and setting out of loops.
Feel free to use precise words like `varref' or `varset'. We want/need
technical details here.
> The Lisp objects are instead referenced onto the stack before the
> loop, and set from the stack afterwards. The new operations are used
You mean you added two byteops: one to read the Nth word on the stack
(counting from the top) and the other to set that word? I expect you
called them something like `sset' and `sref'?
Sounds generally useful (something similar is used in the `lexical' branch
of Miles, you might want to check that out).
Stefan
- Pure strings (Re: Compilation to native), (continued)
- Pure strings (Re: Compilation to native), Juri Linkov, 2004/04/15
- Re: Pure strings (Re: Compilation to native), Richard Stallman, 2004/04/18
- Re: Pure strings (Re: Compilation to native), Kenichi Handa, 2004/04/19
- Re: Pure strings (Re: Compilation to native), Stefan Monnier, 2004/04/19
- Re: Pure strings (Re: Compilation to native), Kenichi Handa, 2004/04/19
- Re: Pure strings (Re: Compilation to native), Richard Stallman, 2004/04/19
- Re: Pure strings (Re: Compilation to native), Kenichi Handa, 2004/04/19
Re: Compilation to native, Matthew Mundell, 2004/04/12
- Re: Compilation to native, Stefan Monnier, 2004/04/12
- Re: Compilation to native, Matthew Mundell, 2004/04/13
- Re: Compilation to native,
Stefan Monnier <=
- Re: Compilation to native, Matthew Mundell, 2004/04/13
- Re: Compilation to native, Miles Bader, 2004/04/13
- Re: Compilation to native, Miles Bader, 2004/04/13
- Re: Compilation to native, Matthew Mundell, 2004/04/14
- Re: Compilation to native, Matthew Mundell, 2004/04/16
Re: Compilation to native, Miles Bader, 2004/04/13
Re: Compilation to native, Matthew Mundell, 2004/04/16
Re: Compilation to native, Stefan Monnier, 2004/04/16
Re: Compilation to native, Matthew Mundell, 2004/04/16
Re: Compilation to native, Matthew Mundell, 2004/04/16