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Re: Why does __float80 depend on -mmmx/-msse?

From: Andrew Pinski <pinskia at physics dot uc dot edu>
To: Ian Lance Taylor <iant at google dot com>
Cc: "H. J. Lu" <hjl at lucon dot org>, gcc mailing list <gcc at gcc dot gnu dot org>, Jan Hubicka <jh at suse dot cz>
Date: Mon, 26 Jun 2006 21:14:54 -0700
Subject: Re: Why does __float80 depend on -mmmx/-msse?
References: <20060626203136.GA10840@lucon.org> <m364ind3ov.fsf@localhost.localdomain>

On Jun 26, 2006, at 2:09 PM, Ian Lance Taylor wrote:

As far as I can see, it doesn't.


You missed:
  if (TARGET_MMX)
    ix86_init_mmx_sse_builtins ();

Which HJL should have also quoted.

On the other hand, as far as I can
see, __float80 is undocumented and unused for the i386.  Why does it
exist?


Jan added it with __float128 also:
2003-10-30  Jan Hubicka  <jh@suse.cz>

(ix86_init_mmx_sse_builtins): Add __float80, __float128.

I think it was added for x86_64 ABI support which defines them

http://gcc.gnu.org/ml/gcc-patches/2003-10/msg02473.html

-- Pinski

Follow-Ups:
- Re: Why does __float80 depend on -mmmx/-msse?
  - From: Ian Lance Taylor

References:
- Why does __float80 depend on -mmmx/-msse?
  - From: H. J. Lu
- Re: Why does __float80 depend on -mmmx/-msse?
  - From: Ian Lance Taylor

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