Re: 33% speed up in CC Mode scrolling.

[Eli Zaretskii]

> Date: Mon, 27 Jun 2016 18:57:09 +0200
> From: martin rudalics <address@hidden>
> CC: address@hidden, address@hidden, address@hidden
> 
>  >> This change has hardly any effect here.  Scrolling xdisp.c with a '-O0
>  >> -g2 -gdwarf-2' build run via emacs -Q is still virtually impossible.
>  >
>  > What exactly does "scrolling xdisp.c [...] is still virtually
>  > impossible" mean?  How do you scroll?
> 
> By leaning on the <next> key which runs ‘scroll-up-command’.

Then don't lean.

Once you get past the initial large comment, the scrolling becomes
more responsive.  And I definitely do see a visible speedup when I set
font-lock-maximum-decoration to 2.  An unoptimized 32-build with
wide-ints here.