[xml] libxml2 and SSE4.2 optimizations

[Chris Healy <cphealy gmail com>]

I am working on a project that uses libxml2 extensively that also uses a newer Intel chipset.  I'm looking to improve it's performance and have read that the newer Intel chipsets have new instructions (SSE4.2) that can help accelerate XML parsing:

https://software.intel.com/en-us/articles/xml-parsing-accelerator-with-intel-streaming-simd-extensions-4-intel-sse4/

Are the methods discussed in this whitepaper applicable to libxml2?  Are there any technical reasons why this could not / should not be done?

Regards,

Chris