Re: master 289000e: Merge branch 'feature/native-comp' into trunk

[Eli Zaretskii]

> Date: Mon, 26 Apr 2021 17:02:44 +0000
> Cc: akrl@sdf.org, emacs-devel@gnu.org
> From: Alan Mackenzie <acm@muc.de>
> 
> Put point at the start of xdisp.c (or any other large file), optionally
> type and delete a space (to clear font-lock text properties), and do M-:
> (time-scroll).  This scrolls through the buffer one screenful at a time,
> displaying each screenful, then reports the total time.
> 
> 
> I've come to the conclusion in the last hour or so that CC Mode just
> isn't sped up much at all by native compilation.  Using Andrea's tip of
> C-h f c-mode + look for "natively compiled", it is clear that the
> natively compiled files _are_ being used.

Yes, for this benchmark, I find the natively-compiled code somewhat
(by about 5%) _slower_ than the byte-compiled code.  But this
benchmark only shows off the fontifications, so maybe it isn't
surprising.  CC Mode is much more than that.