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Re: Fwd: PATCH: optimized expf for x86_32


On Tuesday, April 24, 2012 08:17:07 Dmitrieva Liubov wrote:
> We are looking forward to accepting and releasing this change.

As I said previously: Please place the files in:
sysdeps/i386/i686/fpu/multiarch

Did you run the math testsuite? Any differences?

Andreas

> 
> --
> Liubov Dmitrieva
> 
> 
> ---------- Forwarded message ----------
> From: Dmitrieva Liubov <liubov.dmitrieva@gmail.com>
> Date: 2012/4/5
> Subject: Re: PATCH: optimized expf for x86_32
> To: Ulrich Drepper <drepper@gmail.com>
> ÐÐÐÐÑ: "H.J. Lu" <hjl.tools@gmail.com>, libc-alpha@sourceware.org
> 
> 
> 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.
> 
> Change Log:
> 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.

-- 
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