8 ms·
The penalty is at most ~1 cycle of latency -- in practice I find it gets completely absorbed by the OOE engine. I've never measured any significant penalty in a
by DarkShikari 13y ago
The penalty is at most ~1 cycle of latency -- in practice I find it gets completely absorbed by the OOE engine. I've never measured any significant penalty in any code for mixing float and int SSE operations on any x86 microarchitecture.
Floating point bitwise operations exist too: xorps, andps, and so on.
- gsg 13y agoHmm, ok. Intel recommend avoiding it pretty strongly: I guess they overstate their case. One cycle in (and one out?) isn't exactly crushing.