[PATCH] SEH exceptions on Win64 (LLVM)

[Chandler Carruth]

First, reviews are sometimes slow, sorry. This isn't something I can easily
review, so your best bet is to ping every week or so until a reviewer can
find time.

It also still has the problems that I mentioned about any of the patches
from this project (I mentioned this on the original thread, but none have
responded so I don't know if there is anything to be done there...)

http://reviews.llvm.org/D3418