GNU bug report logs - #14599
An option to make vector allocation aligned

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Message #28 received at 14599 <at> debbugs.gnu.org (full text, mbox):

From: Daniel Hartwig <mandyke <at> gmail.com>
To: Ludovic Courtès <ludo <at> gnu.org>
Cc: 14599 <at> debbugs.gnu.org, Jan Schukat <shookie <at> email.de>
Subject: Re: bug#14599: An option to make vector allocation aligned
Date: Fri, 14 Jun 2013 09:33:37 +0800

On 13 June 2013 21:31, Ludovic Courtès <ludo <at> gnu.org> wrote:
> Jan Schukat <shookie <at> email.de> skribis:
>> The other question is the read syntax (one of the primary reasons I'm
>> doing all this). If alignment is something that should be preserved in
>> the permanent representation, you also need to store it in the flags,
>> since the content pointer can be aligned by coincidence. I haven't
>> looked at the compiling of bytevectors yet, to see if alignment can be
>> handled easily there.
>
> I agree that we’d need some sort of annotation to specify the alignment
> of literals, but adding read syntax for that scares me somewhat.  What
> do people think?

I agree.  The read syntax for vector-ish types in guile is already
large enough.  If alignment is important then use a procedural
constructor and query.

Alignment information not need to be printed with the default
representation (read syntax), we dont also print the storage address,
etc..

Regards

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