077f4eeb84
Add support to use functions exported using vectorcall. This essentially only allows to pass a new LLVM calling convention from rust to LLVM. ```rust extern "vectorcall" fn abc(param: c_void); ``` references ---- http://llvm.org/docs/doxygen/html/CallingConv_8h_source.html https://msdn.microsoft.com/en-us/library/dn375768.aspx