swift234

Well-known kernel simulator benchmark, in swift, JS and C.

I chose this benchmark in order to stress enums and optionals. It is
also one where we see considerable gains on JS with LLVM after getting
the high-level optimization out of the way.

I forsee writing multiple versions of this benchmark, gradually using
more advanced swift features. This first version is meant to be
structurally equivalent to the C code, but using key swift features:
optionals, enums, computed properties.

I don't have recent numbers because it currently exposes an
optimization bug which will be filed shortly.

Swift SVN r17045