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Re: subbytevectors

From: Ludovic Courtès
Subject: Re: subbytevectors
Date: Mon, 11 Jun 2012 17:35:26 +0200
User-agent: Gnus/5.130005 (Ma Gnus v0.5) Emacs/24.0.93 (gnu/linux)


Andy Wingo <address@hidden> skribis:

> On Mon 11 Jun 2012 13:55, address@hidden (Ludovic Courtès) writes:
>> What about using copying (or rather, copy-on-write) sub-bytevectors to
>> start with?  That would avoid the aliasing issue; OTOH COW would make
>> the implementation more complex.
> Not a bad idea.  The FFI can still introduce aliasing, though I don't
> know if that matters.  Alignment is still a problem though.  Plus it's a
> bit more complexity, though an optimizer should be able to do something
> about that.

Currently alignment is more of a theoretical problem because we are not
yet at a point where such an optimization matters (and I think it
wouldn’t matter on x86 anyway), no?  :-)

Though in principle, I agree we should avoid preventing future


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