Re: emacs-26 eec71eb: Speed up replace-buffer-contents

[Eli Zaretskii]

> Cc: address@hidden, address@hidden
> From: Paul Eggert <address@hidden>
> Date: Sat, 7 Jul 2018 11:22:33 -0700
> 
> It sounds like we never had a performance problem in optimized builds that we 
> needed to fix. I.e., the recent patch was needed only for unoptimized builds. 

No, the calls to BUF_BEGV and the determination whether each buffer is
unibyte or not (inside buffer_chars_equal) affected the optimized
builds as well.