Mark Dickinson <dicki...@gmail.com> added the comment:

Perhaps better to drop the SSE2 bits completely.  Anybody who
actually wants SSE2 instructions in their binary can do a

CC="gcc -msse2 -mfpmath=sse" configure && ...

Unless there are objections, I'll drop everything involving SSE2 from 
the configure script.

It's a bit of a shame, though:  it's definitely desirable to be using 
the SSE2 instructions for floating-point whenever possible.  Fewer 
surprises due to double rounding or random 80-bit register spilling, 
better performance on underflow and NaNs, ...

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<http://bugs.python.org/issue1580>
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