This simple patch adds the translation of the proc_bind clause in a parallel operation. The string representation of the proc_bind operand is retrieved from the operation and converted to the enum value expected by the OpenMP IRBuilder.
A new function is added to get the enum value of a proc_bind clause's string representation in a new file (llvm/lib/Frontend/OpenMP/OMPConstants.cpp).
We can delete OMP_PROC_BIND_KIND from OpenMPKinds.def now, right?