HSA: omp-grid.c – access proper clause code

        * omp-grid.c (grid_eliminate_combined_simd_part): Use
        OMP_CLAUSE_CODE to access the omp clause code.

gcc/ChangeLog

+2020-04-08  Tobias Burnus  <tobias@codesourcery.com>
+
+	* omp-grid.c (grid_eliminate_combined_simd_part): Use
+	OMP_CLAUSE_CODE to access the omp clause code.
+
 2020-04-07  Jeff Law  <law@redhat.com>
 
 	PR rtl-optimization/92264

gcc/omp-grid.c

@@ -1065,7 +1065,7 @@ grid_eliminate_combined_simd_part (gomp_for *parloop)
   while (*pc)
     {
       tree c = *pc;
-      switch (TREE_CODE (c))
+      switch (OMP_CLAUSE_CODE (c))
 	{
 	case OMP_CLAUSE_LINEAR:
 	  {