- new spillslots dump phase

[libfirm] / ir / be / beifg_pointer.c

diff --git a/ir/be/beifg_pointer.c b/ir/be/beifg_pointer.c
index 20cf42b..c1b06e3 100644 (file)
--- a/ir/be/beifg_pointer.c
+++ b/ir/be/beifg_pointer.c
@@ -54,7 +54,6 @@ typedef struct _ifg_pointer_t {
        ptr_head_t *curr_ptr_head;
        ptr_element_t *curr_element;
        pmap *node_map;
-       bitset_t *visited_neighbours;
 } ifg_pointer_t;
 
 typedef struct _ptr_iter_t {
@@ -66,6 +65,7 @@ typedef struct _ptr_iter_t {
        ir_node *curr_irn;
        int get_first;
        int sub_call;
+       bitset_t *visited_neighbours;
 } ptr_iter_t;
 
 /* PRIVATE FUNCTIONS */
@@ -474,13 +474,13 @@ static ir_node *get_next_neighbour(ptr_iter_t *it)
 
        if (res && !it->sub_call)
        {
-               if (bitset_contains_irn(it->ifg->visited_neighbours, res) || res == it->irn)
+               if (bitset_contains_irn(it->visited_neighbours, res) || res == it->irn)
                {
                        res = get_next_neighbour(it);
                }
                else
                {
-                       bitset_set(it->ifg->visited_neighbours, get_irn_idx(res));
+                       bitset_set(it->visited_neighbours, get_irn_idx(res));
                }
        }
 
@@ -492,12 +492,14 @@ static ir_node *get_first_neighbour(const ifg_pointer_t *ifg, ptr_iter_t *it, co
        ir_node *res;
        ptr_head_t *head;
        ptr_element_t *element;
+       bitset_t *bitsetvisited_neighbours = bitset_malloc(get_irg_last_idx(ifg->env->irg));
 
        it->ifg = ifg;
        it->irn = irn;
        it->get_first = 0;
        it->sub_call = 0;
-       bitset_clear_all(it->ifg->visited_neighbours);
+
+       it->visited_neighbours = bitsetvisited_neighbours;
 
        head = phase_get_irn_data(&ifg->ph, irn);
        if (!head)
@@ -569,13 +571,13 @@ static ir_node *get_first_neighbour(const ifg_pointer_t *ifg, ptr_iter_t *it, co
 
        if (res && !it->sub_call)
        {
-               if (bitset_contains_irn(it->ifg->visited_neighbours, res) || res == it->irn)
+               if (bitset_contains_irn(it->visited_neighbours, res) || res == it->irn)
                {
                        res = get_next_neighbour(it);
                }
                else
                {
-                       bitset_set(it->ifg->visited_neighbours, get_irn_idx(res));
+                       bitset_set(it->visited_neighbours, get_irn_idx(res));
                }
        }
 
@@ -628,6 +630,10 @@ static ir_node *ifg_pointer_neighbours_next(const void *self, void *iter)
 
 static void ifg_pointer_neighbours_break(const void *self, void *iter)
 {
+       ptr_iter_t *it = iter;
+
+       bitset_free(it->visited_neighbours);
+
        return;
 }
 
@@ -683,10 +689,8 @@ static const be_ifg_impl_t ifg_pointer_impl = {
 be_ifg_t *be_ifg_pointer_new(const be_chordal_env_t *env)
 {
        ifg_pointer_t *ifg      = xmalloc(sizeof(*ifg));
-       bitset_t *bitsetvisited_neighbours = bitset_malloc(get_irg_last_idx(env->irg));
        ifg->impl               = &ifg_pointer_impl;
        ifg->env                        = env;
-       ifg->visited_neighbours = bitsetvisited_neighbours;
 
        ifg->node_map           = pmap_create(); /* to find all nodes, should be replaced by a "keywalker" of irphase */