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Re: Emacs Lisp JIT Compiler

From: Clément Pit-Claudel
Subject: Re: Emacs Lisp JIT Compiler
Date: Tue, 14 Aug 2018 20:21:49 -0400
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:52.0) Gecko/20100101 Thunderbird/52.9.1

On 2018-08-13 00:01, Tom Tromey wrote:
> Hi.  I've written a JIT compiler for Emacs Lisp, and I'd like to check
> it in.

Hi Tom,

This looks very promising! Thanks a lot :)

I compiled and installed libjit, and things seem to build fine here.  
Benchmarking a simple loop yields an impressive 4x speedup (from 1 second down 
to 0.25s).  However, benchmarking a larger application seems to yield a 30% 
slowdown (from 5.5s to 7.5s).  I haven't investigated why yet.  Have you seen 
similar variations?


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