fix bugs introduced in last commit

[libfirm] / ir / ana / irloop.c

diff --git a/ir/ana/irloop.c b/ir/ana/irloop.c
index a170084..7ac9132 100644 (file)
--- a/ir/ana/irloop.c
+++ b/ir/ana/irloop.c
@@ -76,10 +76,10 @@ void mature_loops(ir_loop *loop, struct obstack *obst)
 
        if (loop->n_sons > 0) {
                /* we have child loops, mature them */
-               int i;
+               size_t i;
 
-               for (i = ARR_LEN(new_children) - 1; i >= 0; --i) {
-                       loop_element child = new_children[i];
+               for (i = ARR_LEN(new_children); i > 0;) {
+                       loop_element child = new_children[--i];
 
                        if (*child.kind == k_ir_loop) {
                                mature_loops(child.son, obst);
@@ -177,7 +177,7 @@ size_t get_loop_element_pos(const ir_loop *loop, void *le)
        for (i = 0; i < n; i++)
                if (get_loop_element(loop, i).node == le)
                        return i;
-       return (size_t)-1;
+       return INVALID_LOOP_POS;
 }