Re: Time to merge scratch/correct-warning-pos into master, perhaps?

[Eli Zaretskii]

> From: Óscar Fuentes <ofv@wanadoo.es>
> Date: Mon, 21 Feb 2022 05:04:57 +0100
> 
> Eli Zaretskii <eliz@gnu.org> writes:
> 
> >> If you want to know the impact of such a change, the correct method is
> >> to measure representative instances of real-world cases.
> >
> > We already did that.  We now want to understand _why_ the new version
> > is slower, and then try making it faster.
> 
> Then I suggest to use Valgrind for collecting performance data at the
> machine instruction level

AFAIK, Perf is fully capable of collecting performance data on this
level.  So what will Valgrind gain us, except the need to battle the
known problems when running Emacs under Valgrind?