[ajayjain]

Yep! You got the motivation exactly right. The goal is automatic program "rejuvenation" w/o all the engineering and maintenance costs. Revectorization in the compiler allows programmers to capture much of the performance gain possible with wider instruction sets without having to write and maintain multiple code paths. It can be a big pain to understand and rewrite this vector code -- especially if it's in some external library or another team's code. But agreed that some really nice results are possible with the right engineering such as in parsing.

Do the binaries really get into the 200 MB range from different code paths, or is that due to data?