On Wed, 2009-06-17 at 02:55 +0200, Kevin Kofler wrote:
Bruno Wolff III wrote:
> Is there going to be a way to tell which binaries actually use sse2
> instructions, so that the others can be inherited by a secondary arch?
Due to how GCC works, if the compiler flags enable SSE/SSE2, basically all
the binaries will be using some SSE/SSE2 instructions.
And on the various SSE-capable CPUs, how much benefit does that actually
give us?
I'm after a system-wide answer, not a microbenchmark for zlib or crypto
code. It should take into account any overheads involved in
saving/restoring registers on context switch that wouldn't otherwise
have to be saved/restored.
--
David Woodhouse Open Source Technology Centre
David.Woodhouse(a)intel.com Intel Corporation