[speex-dev] [PATCH] Make SSE Run Time option.

[Segher Boessenkool]

> Please note that dot products of simple vector floats are usually 
> faster
> in the scalar units. The add across and transfer to scalar is just too
> expensive.

Or do four at once, with some shuffling (which is basically free);
almost the same code as a 4x4 matrix/vector multiply.

<p>Segher

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