stmt_list_cache = t;
}
+/* A subroutine of append_to_statement_list{,_force}. T is not NULL. */
+
+static void
+append_to_statement_list_1 (tree t, tree *list_p)
+{
+ tree list = *list_p;
+ tree_stmt_iterator i;
+
+ if (!list)
+ {
+ if (t && TREE_CODE (t) == STATEMENT_LIST)
+ {
+ *list_p = t;
+ return;
+ }
+ *list_p = list = alloc_stmt_list ();
+ }
+
+ i = tsi_last (list);
+ tsi_link_after (&i, t, TSI_CONTINUE_LINKING);
+}
+
+/* Add T to the end of the list container pointed to by LIST_P.
+ If T is an expression with no effects, it is ignored. */
+
+void
+append_to_statement_list (tree t, tree *list_p)
+{
+ if (t && TREE_SIDE_EFFECTS (t))
+ append_to_statement_list_1 (t, list_p);
+}
+
+/* Similar, but the statement is always added, regardless of side effects. */
+
+void
+append_to_statement_list_force (tree t, tree *list_p)
+{
+ if (t != NULL_TREE)
+ append_to_statement_list_1 (t, list_p);
+}
+
/* Links a statement, or a chain of statements, before the current stmt. */
void