question: prefer SSE over x87 asm code?

[bearophile]

Don:

> At the present time, SSE and x87 are the same speed in most cases (most 
> operations take just one cycle) -- except of course that you can do two 
> or four operations at once with SSE.

SSE-something also allow some other operations, sqrt, etc. Even with GCC I've seen some performance improvements using SSE-something instructions.
I suggest people to start looking at AVX instructions too.

Bye,
bearophile