From: Ian Scott <ian.scott@st...> - 2008-11-21 09:09:50
Amitha Perera wrote:
> Ian, or anyone else that knows,
> I recall there were some issues with the vnl_sse when
> VNL_CONFIG_ENABLE_SSE2 was ON, and that we were recommending that people
> keep that flag OFF.
> Have those issues been resolved?
No. And they show no sign of moving up my priority list.
> Is it okay to use
> the same flag to trigger the independent use of sse2 instructions for
> the rounding functions? Or should we be using a different flag?
We should use a different flag. You might want to rename the existing
flag VNL_CONFIG_ENABLE_SSE2 to something more specific, e.g.
The rounding can be controlled with VNL_CONFIG_ENABLE_SSE2_ROUNDING
BTW, it is good to see these rounding functions getting developed.