Moved function to appropriate file.

This API function is now also visible for the optimize variant.

ir/debug/debugger.c

@@ -1236,16 +1236,6 @@ void firm_finish_debugger(void)
 	del_set(bp_idents);
 }
 
-/**
- * A gdb helper function to print firm objects.
- */
-const char *gdb_node_helper(void *firm_object)
-{
-	static char buf[1024];
-	ir_snprintf(buf, sizeof(buf), "%+F", firm_object);
-	return buf;
-}
-
 const char *gdb_tarval_helper(void *tv_object)
 {
 	static char buf[1024];

ir/ir/irnode.c

@@ -1106,6 +1106,16 @@ dbg_info *(get_irn_dbg_info)(const ir_node *n)
 	return get_irn_dbg_info_(n);
 }
 
+/**
+ * A gdb helper function to print firm objects.
+ */
+const char *gdb_node_helper(void *firm_object)
+{
+	static char buf[1024];
+	ir_snprintf(buf, sizeof(buf), "%+F", firm_object);
+	return buf;
+}
+
 ir_switch_table *ir_new_switch_table(ir_graph *irg, size_t n_entries)
 {
 	struct obstack *obst = get_irg_obstack(irg);