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From: "Giovanni Bajo" <giovannibajo@libero.it>
To: "Geoffrey Keating" <geoffk@apple.com>
Cc: <gcc@gcc.gnu.org>
References: <FA388EC7-0DBB-11D9-8B78-000A95B1F520@apple.com>
Subject: Re: attribute data structure rewrite
Date: Fri, 24 Sep 2004 02:35:00 -0000
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Geoffrey Keating wrote:

> /* A structure representing 'attributes' on a DECL or TYPE node.
>     Each attribute has a NAME (an IDENTIFIER_NODE) and possibly a
>   VALUE. */
> struct one_attribute GTY(())
> {
>    tree name;
>    tree value;
> };
> 
> /* A counted list of attributes.  */
> struct attribute_list_s GTY(())
> {
>    attribute_count n_attributes;
>    /* There are 16 bits free here.  */
>    struct one_attribute GTY((length ("%h.n_attributes"))) attribs[1];
> };

Why not simply VEC(one_attribute) ?

Do you have some numbers on the speedup we get with this?

Giovanni Bajo