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Re: 'struct window' cleanup #2

From: John Wiegley
Subject: Re: 'struct window' cleanup #2
Date: Mon, 25 Jun 2012 09:22:02 -0500
User-agent: Gnus/5.130006 (Ma Gnus v0.6) Emacs/24.1 (darwin)

>>>>> Dmitry Antipov <address@hidden> writes:

> For a `struct window', changing the type of `last_point', `last_modified'
> and `last_overlay_modified' from Lisp_Object to appropriate integral value
> eliminates a lot of useless Lisp_Object <-> {EMACS_INT, ptrdiff_t}
> conversions in a window and redisplay code; and, of course, lesser
> Lisp_Objects means a bit faster GC. OK to install?

Dmitry, have you measured what speed/memory advantage this change represents?
I understand the theory of why it may be valuable, but what has convinced you
that it's a hotspot?


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