[wwwdocs][patch] Document NEON default vector size change

[wwwdocs][patch] Document NEON default vector size change

[Ira Rosen]

Hi,

As pointed out here
http://gcc.gnu.org/ml/gcc-patches/2011-03/msg02183.html the change of
the default vector size has to be documented in changes.html:

     * htdocs/gcc-4.7/changes.html (targets): Document ARM NEON default
     vector size change.

Index: htdocs/gcc-4.7/changes.html
===================================================================
RCS file: /cvs/gcc/wwwdocs/htdocs/gcc-4.7/changes.html,v
retrieving revision 1.6
diff -r1.6 changes.html
82a83,89
> <h3 id="arm">ARM</h3>
>     <ul>
>     <li>The default vector size in auto-vectorization for NEON is now 128 bits.
>       If for some reason vectorization fails, the vectorizer tries again with
>       64 bit vectors.</li>
>   </ul>
>

OK (once the change itself is committed)?

Thanks,
Ira

Re: [wwwdocs][patch] Document NEON default vector size change

[Gerald Pfeifer]

On Tue, 5 Apr 2011, Ira Rosen wrote:
>>     <li>The default vector size in auto-vectorization for NEON is now 128 bits.
>>       If for some reason vectorization fails, the vectorizer tries again with
>>       64 bit vectors.</li>

64-bit according to http://gcc.gnu.org/codingconventions.html.

And perhaps omit "for some reason" and add "thusly", as in "If 
vectorization fails thusly"?

> OK (once the change itself is committed)?

Sure thing!

Gerald