+static int
+text_action_compare (splay_tree_key a, splay_tree_key b)
+{
+ text_action *pa = (text_action *)a;
+ text_action *pb = (text_action *)b;
+ static const int action_priority[] =
+ {
+ [ta_fill] = 0,
+ [ta_none] = 1,
+ [ta_convert_longcall] = 2,
+ [ta_narrow_insn] = 3,
+ [ta_remove_insn] = 4,
+ [ta_remove_longcall] = 5,
+ [ta_remove_literal] = 6,
+ [ta_widen_insn] = 7,
+ [ta_add_literal] = 8,
+ };
+
+ if (pa->offset == pb->offset)
+ {
+ if (pa->action == pb->action)
+ return 0;
+ return action_priority[pa->action] - action_priority[pb->action];
+ }
+ else
+ return pa->offset < pb->offset ? -1 : 1;
+}
+
+static text_action *
+action_first (text_action_list *action_list)
+{
+ splay_tree_node node = splay_tree_min (action_list->tree);
+ return node ? (text_action *)node->value : NULL;
+}
+
+static text_action *
+action_next (text_action_list *action_list, text_action *action)
+{
+ splay_tree_node node = splay_tree_successor (action_list->tree,
+ (splay_tree_key)action);
+ return node ? (text_action *)node->value : NULL;
+}
+