cleanup space generation logic and make it more robust for union constructs

[libfirm] / ir / ir / irgraph.c

diff --git a/ir/ir/irgraph.c b/ir/ir/irgraph.c
index b645db8..9f93e14 100644 (file)
--- a/ir/ir/irgraph.c
+++ b/ir/ir/irgraph.c
@@ -1084,7 +1084,21 @@ void clear_using_irn_link(ir_graph *irg) {
 int using_irn_link(const ir_graph *irg) {
        return irg->using_irn_link;
 }
-#endif
+
+void set_using_block_mark(ir_graph *irg) {
+       assert(irg->using_block_mark == 0);
+       irg->using_block_mark = 1;
+}
+
+void clear_using_block_mark(ir_graph *irg) {
+       assert(irg->using_block_mark == 1);
+       irg->using_block_mark = 0;
+}
+
+int using_block_mark(const ir_graph *irg) {
+       return irg->using_block_mark;
+}
+#endif /* NDEBUG */
 
 /* Returns a estimated node count of the irg. */
 unsigned (get_irg_estimated_node_cnt)(const ir_graph *irg) {