Cycle counts of the new Westmere instructions

[Cryptographer]

How many cycles do the new instructions require
and can they be paired with other intructions?

aesimc
aeskeygenassist
aesenc
aesenclast
aesdec
aesdeclast
pclmulqdq

[capens__nicolas]

The AES-NI white paper has some performance results from which you could estimate the instruction latencies: http://software.intel.com/en-us/articles/intel-advanced-encryption-standard-aes-instructions-set/. It explicitly mentions that they are pipelined too.

You can expect pclmulqdq to perform the same as other vector multiplications.

[neni]

it changes by impl, you can take your aes kernel(s) and run it through the CodenAnalyzer to understand tput, latency, etc
http://software.intel.com/en-us/articles/intel-architecture-code-analyzer/