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- To: eigen@xxxxxxxxxxxxxxxxxxx
- Subject: Re: [eigen] vectorization of complex
- From: Gael Guennebaud <gael.guennebaud@xxxxxxxxx>
- Date: Wed, 7 Jul 2010 18:42:42 +0200
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On Wed, Jul 7, 2010 at 6:02 PM, Gael Guennebaud
<gael.guennebaud@xxxxxxxxx> wrote:
> Still about matrix products, higher performance could be achieved by
> explicitly writing the code to perform multiple multiplications.
> Indeed, each factor is used twice, and some intermediate results
> (shuffling) could be reused.... Maybe the compiler does that for us, I
> did not check, but I doubt that!
nevermind, the shuffles are well factorized by gcc
gael