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From: "Mattias Engdegård" <mattiase@acm.org>
To: Andrea Corallo <akrl@sdf.org>
Cc: Eli Zaretskii <eliz@gnu.org>,
	62537@debbugs.gnu.org,
	Pedro Andres Aranda Gutierrez <paaguti@gmail.com>
Subject: bug#62537: Error compiling emacs master with native compilation activated
Date: Wed, 5 Apr 2023 23:46:09 +0200	[thread overview]
Message-ID: <B382826C-24BB-4EF4-AF8C-27AA2DF3EE70@acm.org> (raw)
In-Reply-To: <xjffs9ehw46.fsf@ma.sdf.org>

5 apr. 2023 kl. 23.12 skrev Andrea Corallo <akrl@sdf.org>:

>> (Perhaps we should do something like that in the LAP optimiser. Wonder how common the opportunity is though.)
> 
> Yeah might be a good idea even if I don't know how common this condition
> is.

Experimentally adding a LAP optimiser rule for it resulted in no matches during a complete lisp recompilation, so it's safe to say that it's not very common. 

I'm not going to bother, but perhaps your code works on something that has undergone further transformations and is thus more likely to trigger the rule?

>>   (apply #'= (hash-table-values jmp-table))
>> 
>> which is arguably clearer and definitely shorter.
> 
> True but with the downside that it conses.

More than the current code?






  reply	other threads:[~2023-04-05 21:46 UTC|newest]

Thread overview: 13+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2023-03-30  7:18 bug#62537: Error compiling emacs master with native compilation activated Pedro Andres Aranda Gutierrez
2023-03-30  8:50 ` Eli Zaretskii
2023-03-30  9:28 ` Andrea Corallo
2023-03-30  9:59   ` Pedro Andres Aranda Gutierrez
2023-03-30 10:37   ` Mattias Engdegård
2023-03-30 13:35     ` Andrea Corallo
2023-03-31 10:26       ` Andrea Corallo
2023-03-31 15:14         ` Mattias Engdegård
2023-04-05 17:19           ` Andrea Corallo
2023-04-05 20:51             ` Mattias Engdegård
2023-04-05 21:12               ` Andrea Corallo
2023-04-05 21:46                 ` Mattias Engdegård [this message]
2023-04-06 10:42             ` Mattias Engdegård

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