Let dfs() discover only memory nodes

[libfirm] / ir / ana / height.c

diff --git a/ir/ana/height.c b/ir/ana/height.c
index 6d3f708..43e06a2 100644 (file)
--- a/ir/ana/height.c
+++ b/ir/ana/height.c
@@ -55,6 +55,7 @@ typedef struct {
 static void *irn_height_init(ir_phase *ph, ir_node *irn, void *data)
 {
        irn_height_t *h = data ? data : phase_alloc(ph, sizeof(h[0]));
+       (void)irn;
        memset(h, 0, sizeof(h[0]));
        return h;
 }