Subject: Re: 23.0.60; bug of bytecomp arithmetic operations

From: Chong Yidong <[email-masked]>
Date: Fri, 21 Nov 2008 13:56:15 -0500

I've reviewed your patch, and checked most of it into CVS (I took the
liberty of rewording some comments, plus some minor edits).

> *** Optimize addtion/subtraction where their last operand is 1 or
> -1 to use `1+', `1-' funcitons. This pattern often appears and
> more effective at least in size (byte-add1 vs constant 1).

Let's leave this till after the release.  It's not clear to me that
there is a significant speed increase from it, and we should try to
restrict the changes to bug fixes for the moment.

Thanks very much for working on this.