Thorsten Froehlich <tho### [at] trfde> wrote:
> Please check out the current Intel information what SSE2 is actually
> supposed to be used for. I am not talking about vectorized code or
> auto-vectorization.

So - what IS it actually supposed to be used for?


Basic Architecture", I find that SSE2 is useful for:

- SIMD (for processing bulk data)
- loading data without involvement of the cache (agan for bulk data)

That's about it, basically.

So? What's the news I have missed you expect me to find in "the current Intel
information what SSE2 is actually supposed to be used for" (whatever document
that is supposed to be)?

The same document also mentions that SSE2 supports basically the same arithmetic
operations as MMX, about which the doc has to say: "The arithmetic instructions
perform addition, subtraction, multiplication, and
multiply/add operations on packed data types"

Duh. Any mention of such things as sin, cos, log or such? I don't see any.

So: Back to good old x87 FPU instructions for these.

Post a reply to this message