FindMPI: Add support for IntelLLVM

Signed-off-by: William R. Dieter <william.r.dieter@intel.com>

Modules/FindMPI.cmake

@@ -294,6 +294,11 @@ if(WIN32)
   set(_MPI_Intel_CXX_COMPILER_NAMES          mpiicpc.bat)
   set(_MPI_Intel_Fortran_COMPILER_NAMES      mpiifort.bat mpif77.bat mpif90.bat)
 
+  # Intel MPI compiler names
+  set(_MPI_IntelLLVM_C_COMPILER_NAMES            mpiicc.bat)
+  set(_MPI_IntelLLVM_CXX_COMPILER_NAMES          mpiicpc.bat)
+  set(_MPI_IntelLLVM_Fortran_COMPILER_NAMES      mpiifort.bat mpif77.bat mpif90.bat)
+
   # Intel MPI compiler names for MSMPI
   set(_MPI_MSVC_C_COMPILER_NAMES             mpicl.bat)
   set(_MPI_MSVC_CXX_COMPILER_NAMES           mpicl.bat)
@@ -302,6 +307,11 @@ else()
   set(_MPI_Intel_C_COMPILER_NAMES            mpiicc)
   set(_MPI_Intel_CXX_COMPILER_NAMES          mpiicpc  mpiicxx mpiic++)
   set(_MPI_Intel_Fortran_COMPILER_NAMES      mpiifort mpiif95 mpiif90 mpiif77)
+
+  # Intel compiler names
+  set(_MPI_IntelLLVM_C_COMPILER_NAMES            mpiicc)
+  set(_MPI_IntelLLVM_CXX_COMPILER_NAMES          mpiicpc  mpiicxx mpiic++)
+  set(_MPI_IntelLLVM_Fortran_COMPILER_NAMES      mpiifort mpiif95 mpiif90 mpiif77)
 endif()
 
 # PGI compiler names
@@ -327,7 +337,7 @@ set(_MPI_XL_Fortran_COMPILER_NAMES         mpixlf95   mpixlf95_r mpxlf95 mpxlf95
 # pick up the right settings for it.
 foreach (LANG IN ITEMS C CXX Fortran)
   set(_MPI_${LANG}_COMPILER_NAMES "")
-  foreach (id IN ITEMS GNU Intel MSVC PGI XL)
+  foreach (id IN ITEMS GNU Intel IntelLLVM MSVC PGI XL)
     if (NOT CMAKE_${LANG}_COMPILER_ID OR CMAKE_${LANG}_COMPILER_ID STREQUAL id)
       foreach(_COMPILER_NAME IN LISTS _MPI_${id}_${LANG}_COMPILER_NAMES)
         list(APPEND _MPI_${LANG}_COMPILER_NAMES ${_COMPILER_NAME}${MPI_EXECUTABLE_SUFFIX})