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Re: cmath call builtin sqrtf but many platforms seem miss that(was Re: lrint lrintf problems )

From: Gabriel Dos Reis <gdr at integrable-solutions dot net>
To: Bernd Roesch <nospamname at web dot de>
Cc: Richard Guenther <richard dot guenther at gmail dot com>, gcc at gcc dot gnu dot org
Date: Tue, 10 Mar 2009 09:06:23 -0600
Subject: Re: cmath call builtin sqrtf but many platforms seem miss that(was Re: lrint lrintf problems )
References: <84fc9c000903090803i5d9b419blc7ed9e71ce108d90@mail.gmail.com> <yam11391.292.281619664@mail.gmx.net>

On Tue, Mar 10, 2009 at 7:58 AM, Bernd Roesch <nospamname@web.de> wrote:
> Hello Richard
>
> On 09.03.09, you wrote:
>
>>> I believe one should convince the middle end to emit libcall
>>> for __builtin_xxx when the target has no builtint support.
>>
>> It of course does.
>
> On what codeplace is the redefine do in GCC source ?
>
> I see in my c++config.h file
>
> this stand here
>
> /* Define if the compiler/host combination has __builtin_sqrtf. */
> /* #undef _GLIBCXX_HAVE___BUILTIN_SQRTF */

So, the real problem is that somehow configure thinks your target
has support for __builtin_sqrtf.

-- Gaby

References:
- Re: cmath call builtin sqrtf but many platforms seem miss that(was Re: lrint lrintf problems )
  - From: Richard Guenther
- Re: cmath call builtin sqrtf but many platforms seem miss that(was Re: lrint lrintf problems )
  - From: Bernd Roesch

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