Fix iterating all irgs in gc_irgs().

Do not leave out the last (highest numbered) irg.

diff --git a/ir/opt/ircgopt.c b/ir/opt/ircgopt.c
index d49701b..ce9e411 100644 (file)
--- a/ir/opt/ircgopt.c
+++ b/ir/opt/ircgopt.c
@@ -121,7 +121,7 @@ void gc_irgs(size_t n_keep, ir_entity ** keep_arr)
        }
 
        /* clean */
-       for (size_t i = get_irp_n_irgs()-1; i-- > 0; ) {
+       for (size_t i = get_irp_n_irgs(); i-- != 0;) {
                ir_graph  *irg = get_irp_irg(i);
                ir_entity *ent = get_irg_entity(irg);