[PATCH] CodeGen: implement __emit and __yield intrinsics

[Saleem Abdulrasool]

Hmm, seems that phabricator truncated your message Tim.

As to your concerns, I will look into creating the LLVM intrinsic for __yield as it is blessed by ACLE.

The __emit is not the prettiest of things, but that is in MSVC system headers and needs support.  I am happy to make support for conditional on -fms-compatibility (Id actually prefer that, but took the path of least resistance, please be gentle!).

http://reviews.llvm.org/D3489