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Cc: gcc@gcc.gnu.org, "Timothy J. Wood" <tjw@omnigroup.com>
From: Ziemowit Laski <zlaski@apple.com>
Subject: Re: 3.4 bootstrap failure on powerpc-apple-darwin7.2.0
Date: Sun, 18 Jan 2004 23:36:00 -0000
To: Andrew Pinski <pinskia@physics.uc.edu>
X-SW-Source: 2004-01/txt/msg01224.txt.bz2


On 18 Jan 2004, at 15.18, Andrew Pinski wrote:

> On Jan 18, 2004, at 15:10, Ziemowit Laski wrote:
>>> --enable-altivec is really only for ppc linux to enable the altivec 
>>> ABI by default which is
>>> done for PPC Darwin by default already.
>
>> Actually, in the course of my recent AltiVec struggles, I failed to 
>> discover any purpose whatsoever for the '--enable-altivec' config 
>> switch -- perhaps Aldy can enlighten us.
>
>
> Doing a simple search using google, I found when this was added:
> http://gcc.gnu.org/ml/gcc-patches/2001-12/msg02123.html
>
> It is exactly does what I said it does is to change the ABI by default.

Indeed, except I fail to see why this can't be done at run-time, when 
the user specifies '-maltivec'.

--Zem