SSE4A - ammintrin.h missing

Not sure if this is the best list, but all intrinsics seem to be covered except SSE4A.
http://opensource.apple.com/source/gcc/gcc-5646/gcc/config/i386/ammintrin.h

Anyone interested to clean-room that header? It's pretty small and we can help/sponsor if necessary.

Best,

./C

The intrinsics and instructions are missing from the llvm backend. That would need to be done first. I can see about doing that.