[LLVMdev] SIMD trigonometry/logarithms?

[Justin Holewinski]

I'm wondering if it makes sense to instead supply a bc math library.  I
would think it would be easier to maintain and debug, and should still give
you all of the benefits.  You could just link with it early in the
optimization pipeline to ensure inlining.  This may also make it easier to
maintain SIMD functions for multiple backends.


On Sun, Jan 27, 2013 at 8:49 AM, Hal Finkel <hfinkel at anl.gov> wrote:

> ----- Original Message -----
> > From: "Dimitri Tcaciuc" <dtcaciuc at gmail.com>
> > To: llvmdev at cs.uiuc.edu
> > Sent: Sunday, January 27, 2013 3:42:42 AM
> > Subject: [LLVMdev] SIMD trigonometry/logarithms?
> >
> >
> >
> > Hi everyone,
> >
> >
> > I was looking at loop vectorizer code and wondered if there was any
> > current or planned effort to introduce SIMD implementations of
> > sin/cos/exp/log intrinsics (in particular for x86-64 backend)?
>
> Ralf Karrenberg had implemented some of these as part of his
> whole-function vectorization project:
>
> https://github.com/karrenberg/wfv/blob/master/src/utils/nativeSSEMathFunctions.hpp
>
> https://github.com/karrenberg/wfv/blob/master/src/utils/nativeAVXMathFunctions.hpp
>
> Opinions on pulling these into the X86 backend?
>
>  -Hal
>
> >
> >
> > Cheers,
> >
> >
> >
> >
> > Dimitri.
> > _______________________________________________
> > LLVM Developers mailing list
> > LLVMdev at cs.uiuc.edu         http://llvm.cs.uiuc.edu
> > http://lists.cs.uiuc.edu/mailman/listinfo/llvmdev
> >
> _______________________________________________
> LLVM Developers mailing list
> LLVMdev at cs.uiuc.edu         http://llvm.cs.uiuc.edu
> http://lists.cs.uiuc.edu/mailman/listinfo/llvmdev
>



-- 

Thanks,

Justin Holewinski
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.llvm.org/pipermail/llvm-dev/attachments/20130127/5fd485c4/attachment.html>