+ break;
+
+ case MODIFY_EXPR:
+ if (TREE_OPERAND (incr, 0) != decl)
+ break;
+ if (TREE_OPERAND (incr, 1) == decl)
+ break;
+ if (TREE_CODE (TREE_OPERAND (incr, 1)) == PLUS_EXPR
+ && (TREE_OPERAND (TREE_OPERAND (incr, 1), 0) == decl
+ || TREE_OPERAND (TREE_OPERAND (incr, 1), 1) == decl))
+ incr_ok = true;
+ else if ((TREE_CODE (TREE_OPERAND (incr, 1)) == MINUS_EXPR
+ || (TREE_CODE (TREE_OPERAND (incr, 1))
+ == POINTER_PLUS_EXPR))
+ && TREE_OPERAND (TREE_OPERAND (incr, 1), 0) == decl)
+ incr_ok = true;
+ else
+ {
+ tree t = check_omp_for_incr_expr (elocus,
+ TREE_OPERAND (incr, 1),
+ decl);
+ if (t != error_mark_node)
+ {
+ incr_ok = true;
+ t = build2 (PLUS_EXPR, TREE_TYPE (decl), decl, t);
+ incr = build2 (MODIFY_EXPR, void_type_node, decl, t);
+ }
+ }
+ break;