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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From: Stefan Monnier <monnier <at> iro.umontreal.ca>
To: Philipp Stephani <p.stephani2 <at> gmail.com>
Cc: Mattias Engdegård <mattiase <at> acm.org>, Paul Eggert <eggert <at> cs.ucla.edu>, Andrea Corallo <andrea_corallo <at> yahoo.it>, 42147 <at> debbugs.gnu.org
Subject: bug#42147: 28.0.50; pure vs side-effect-free, missing optimizations?
Date: Mon, 10 Aug 2020 18:07:29 -0400

> Another option would be to create a separate function property (such
> as `eval-when-compile' or `force-inline') that would force the byte
> compiler to inline each call, as if surrounded by `eval-when-compile'.

It can't always be done, so I think from that point of view what we have
is fine, the only problem is that we don't have a way to say "this can
be considered as pure by the compiler" without also saying "this doesn't
change the march-data".

So maybe a new value of `pure` is in order?


        Stefan
This bug report was last modified 4 years and 282 days ago.

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