message: Tweak in the logic for the MFEM_UNROLL macro.
diff: @@ -38,8 +38,11 @@ namespace mfem
  (defined(__clang__) && ((__clang_major__ > 3) || \
  (__clang_major__ == 3 && __clang_minor__ >= 7)))
  #define MFEM_UNROLL(N) MFEM_PRAGMA(unroll N)
  -#elif defined(__xlC__) || defined(__ICC)
  +#elif defined(__xlC__)
  #define MFEM_UNROLL(N) MFEM_PRAGMA(unroll(N))
  +#elif defined(__ICC)
  +// Using "MFEM_PRAGMA(unroll(N))" results in compiler remarks, so don't use it
  +#define MFEM_UNROLL(N)
  #elif (__GNUC__ >= 8)
  // Using "MFEM_PRAGMA(GCC unroll N)" does not seem to work. Why?
  #define MFEM_UNROLL(N)
  