NODE_KEEP macro

1 files changed, 5 insertions, 0 deletions

diff --git a/ir.h b/ir.h
index 799a0e0..681f3ae 100644
--- a/ir.h
+++ b/ir.h
@@ -107,6 +107,11 @@ typedef struct {
 	Scope scope;
 } Proc;
 
+#define NODE_KEEP(p, n, ...)\
+	do { Node *keep_node = n;\
+		node_add_out(p, keep_node, p->keepalive); __VA_ARGS__;\
+		node_del_out(keep_node, p->keepalive); } while(0)
+
 void node_kill(Node *n, Proc *p);
 void node_die(Node *n, Proc *p);
 void node_del_out(Node *n, Node *p);