[PATCH]: Optimized with SSE2 some libm functions for x86_64 (in assemly codes)

[Dmitrieva Liubov]

Hello,

We decided to make additional performance measurements for this patch.
Please, don't merge it.

I will resent it when we are sure that the patch is ready and checked enough.

Sorry for inconvenience.

--
Liubov Dmitrieva


2011/11/24 Dmitrieva Liubov <liubov.dmitrieva@gmail.com>:
> Hello,
>
> This patch contains some optimized with SSE2 libm fucntions.
>
> 2011-11-24  Liubov Dmitrieva  <liubov.dmitrieva@gmail.com>
>
>        * sysdeps/x86_64/fpu/s_erf.S: New file.
>        Optimized with sse2.
>        * sysdeps/x86_64/fpu/s_erfc.S: New file.
>        Optimized with sse2.
>        * sysdeps/x86_64/fpu/s_erff.S: New file.
>        Optimized with sse2.
>        * sysdeps/x86_64/fpu/s_erfcf.S: New file.
>        Optimized with sse2.
>        * sysdeps/x86_64/fpu/e_expf.S: New file.
>        Optimized with sse2.
>        * sysdeps/x86_64/fpu/multiarch/e_exp-sse2.S: New file.
>        Optimized with sse2.
>
>        * sysdeps/x86_64/fpu/multiarch/e_exp.c: Update.
>        Use new __exp1-sse2 and __ieee754_exp as a defaults.
>        * sysdeps/x86_64/fpu/multiarch/Makefile:
>        (libm-sysdep_routines): Add e_exp-sse2
>
> --
> Liubov Dmitrieva
> Intel Corporation