GNU bug report logs - #42147
28.0.50; pure vs side-effect-free, missing optimizations?

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Package: emacs;

Reported by: Andrea Corallo <andrea_corallo <at> yahoo.it>

Date: Tue, 30 Jun 2020 22:28:02 UTC

Severity: normal

Found in version 28.0.50

Done: Mattias Engdegård <mattiase <at> acm.org>

Bug is archived. No further changes may be made.

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Message #77 received at 42147 <at> debbugs.gnu.org (full text, mbox):

From: Stefan Monnier <monnier <at> iro.umontreal.ca>
To: Mattias Engdegård <mattiase <at> acm.org>
Cc: Paul Eggert <eggert <at> cs.ucla.edu>, Andrea Corallo <andrea_corallo <at> yahoo.it>,
 42147 <at> debbugs.gnu.org
Subject: Re: bug#42147: 28.0.50; pure vs side-effect-free, missing
 optimizations?
Date: Fri, 03 Jul 2020 09:11:29 -0400

> Fortunately modern compilers generate SSE code by default, only passing
> return values on the x87 stack as per the x86 ABI (which causes no
> harm). This reduces an already tiny risk to nil. We could add an elaborate
> configure or run-time test and admonishments to the installation
> instructions but frankly we have better use of our time. I suggest we
> replace byte-opt--portable-numberp with numberp (or nothing at all,
> depending on where it occurs) and be done with it.

Agreed,


        Stefan
This bug report was last modified 4 years and 281 days ago.

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