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Date: Thu, 15 Mar 2012 09:46:00 -0000
Message-ID: <CAFiYyc29a9KzuGdJ12MUUzmg2iZffKTS02kQjUnGOfs4N1ON7Q@mail.gmail.com>
Subject: Re: The state of glibc libm
From: Richard Guenther <richard.guenther@gmail.com>
To: Andi Kleen <andi@firstfloor.org>
Cc: "Joseph S. Myers" <joseph@codesourcery.com>, Jeff Law <law@redhat.com>, libc-alpha@sourceware.org, 	gcc@gcc.gnu.org, Geert Bosch <bosch@adacore.com>, 	Christoph Lauter <christoph.lauter@lip6.fr>
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On Wed, Mar 14, 2012 at 10:47 PM, Andi Kleen <andi@firstfloor.org> wrote:
> On Wed, Mar 14, 2012 at 09:04:53PM +0000, Joseph S. Myers wrote:
>> On Wed, 14 Mar 2012, Andi Kleen wrote:
>>
>> > One big win alone on 32bit x86 would be to use a SSE ABI for libm
>> > by default.
>>
>> I haven't checked, but I'd hope x32 does that as a better 32-bit ABI for
>> newer x86 processors.
>
> x32 is not a mainstream option.

SSE ABI entries for i?86 in glibc were rejected.  I proposed them like
4-5 years ago to make -mfpmath=sse not suck.

Richard.

> -Andi
> --
> ak@linux.intel.com -- Speaking for myself only.