X-Git-Url: http://nsz.repo.hu/git/?a=blobdiff_plain;f=ir%2Fbe%2Fbeutil.c;h=bcf3c286d2816fdbe0aa3be321b5e94dd11d2a7d;hb=a7f5d1be44da38c242b89f3547dd4b48d511ab26;hp=18effda0f3ed7aafd89e5e03c74344df88fa7420;hpb=a2f828247f44de1a46f0baeecd0fbf81751e4777;p=libfirm

diff --git a/ir/be/beutil.c b/ir/be/beutil.c
index 18effda0f..bcf3c286d 100644
--- a/ir/be/beutil.c
+++ b/ir/be/beutil.c
@@ -1,3 +1,8 @@
+/**
+ * Contains some useful function for the backend.
+ * @author Sebastian Hack
+ * @cvsid  $Id$
+ */
 #ifdef HAVE_CONFIG_H
 #include "config.h"
 #endif
@@ -182,6 +187,7 @@ void be_dump(ir_graph *irg, const char *suffix, void (*dumper)(ir_graph *, const
 	}
 
 	snprintf(buf, sizeof(buf), "-%02d%s", nr++, suffix);
+	buf[sizeof(buf) - 1] = '\0';
 	dumper(irg, buf);
 }
 
@@ -206,6 +212,17 @@ void be_collect_phis(ir_graph *irg)
 	irg_walk_graph(irg, collect_phis, NULL, NULL);
 }
 
+static void count_num_reachable_nodes(ir_node *irn, void *env) {
+	int *num = env;
+	(*num)++;
+}
+
+unsigned get_num_reachable_nodes(ir_graph *irg) {
+	int num = 0;
+	irg_walk_graph(irg, count_num_reachable_nodes, NULL, &num);
+	return num;
+}
+
 /* FIXME: not used. can be deleted? */
 ir_node *dom_up_search(pset *accept, ir_node *start_point_exclusive) {
 	ir_node *irn, *idom;