code review request for 3 address AVX additions

[Berg, Michael C]

Subject: Code review request for adding 3 address forms of binary operations so that we get better allocation and improved schedule ability.
                 All other kinds of SSE ops are auto propagated to AVX with no difference in usage model as our IR inputs a single source of data.

Folks, the code is available as:

https://github.com/graalvm/graal-core/pull/199 
For review.  

This change causes uplift in scimark.lu.large (8%) and scimark.lu.small (16%)

Regards,
Michael