PATCH: optimized expf for x86_32

[Dmitrieva Liubov]

Hello,

Code was replaced to  sysdeps/i386/i686/multiarch. New patch is attached.
My performance data was about  { expf (which uses __ieee754_expf),
__ieee754_expf } not about  { __expf_finite, __ieee754_expf }. Sorry
for misprint in names at my previous letter.
We didn't check __expf_finite but believe it becomes faster as well.


2012-04-05  Liubov Dmitrieva  <liubov.dmitrieva@gmail.com>

	* sysdeps/i386/i686/multiarch/Makefile: Add
	(libm-sysdep_routines): e_expf-sse2 e_expf_finite.sse2 init-arch
	* sysdeps/i386/i686/multiarch/e_expf.S: New file.
	* sysdeps/i386/i686/multiarch/e_expf-sse2.S: New file.
	* sysdeps/i386/i686/multiarch/e_expf_finite-sse2.S: New file.

--
Liubov Dmitrieva
Intel Corporation


2012/4/3 Ulrich Drepper <drepper@gmail.com>:
> On Mon, Apr 2, 2012 at 10:43, H.J. Lu <hjl.tools@gmail.com> wrote:
>> I think all i386 multiarch codes should be under
>> sysdeps/i386/i686.
>
> Indeed.  None of this applies to pre-i686 hardware.
-------------- next part --------------
A non-text attachment was scrubbed...
Name: expf_x86_32.patch
Type: application/octet-stream
Size: 13683 bytes
Desc: not available
URL: <http://sourceware.org/pipermail/libc-alpha/attachments/20120405/6e21fb7d/attachment.obj>