Re: A proposal for the future of open-paren-in-column-0-is-defun-start.

[Eli Zaretskii]

> Cc: address@hidden, address@hidden, address@hidden
> From: martin rudalics <address@hidden>
> Date: Tue, 7 Apr 2020 10:33:58 +0200
> 
>  > Actually, we had a few detailed profiles posted which show many levels
>  > below "somewhere in jit-lock", at least for CC Mode.
> 
> When comparing -O0 with -O3 builds I noticed one additional difference
> with simple repetitions of 'scroll-up' in xdisp.c.  The optimized build
> spent 25% of the CPU time consumed collecting garbage, the debug build
> 42%.  Does an -O0 build produce more garbage or is it collecting slower?

I think the latter.  I don't think --enable-checking causes
significantly more Lisp object to be produced.  GC is very recursive,
so optimizations that put variables in registers make it faster.