make ir_node *irn const for liveness_remove

[r16209]

diff --git a/ir/be/belive.c b/ir/be/belive.c
index 02ba1d1..b75d982 100644 (file)
--- a/ir/be/belive.c
+++ b/ir/be/belive.c
@@ -251,7 +251,8 @@ static struct _be_lv_info_node_t *be_lv_get_or_set(struct _be_lv_t *li, ir_node
  * Removes a node from the list of live variables of a block.
  * @return 1 if the node was live at that block, 0 if not.
  */
-static int be_lv_remove(struct _be_lv_t *li, ir_node *bl, ir_node *irn)
+static int be_lv_remove(struct _be_lv_t *li, const ir_node *bl,
+                        const ir_node *irn)
 {
        struct _be_lv_info_t *irn_live = phase_get_irn_data(&li->ph, bl);
 
@@ -367,6 +368,12 @@ struct _lv_walker_t {
        void *data;
 };
 
+typedef struct lv_remove_walker_t {
+       be_lv_t       *lv;
+       const ir_node *irn;
+} lv_remove_walker_t;
+
+
 /**
  * Liveness analysis for a value.
  * This functions is meant to be called by a firm walker, to compute the
@@ -436,10 +443,8 @@ static void liveness_for_node(ir_node *irn, void *data)
 
 static void lv_remove_irn_walker(ir_node *bl, void *data)
 {
-       struct _lv_walker_t *w = data;
-       be_lv_t *lv  = w->lv;
-       ir_node *irn = w->data;
-       be_lv_remove(lv, bl, irn);
+       lv_remove_walker_t *w = data;
+       be_lv_remove(w->lv, bl, w->irn);
 }
 
 static const char *lv_flags_to_str(unsigned flags)
@@ -609,19 +614,19 @@ void be_liveness_free(be_lv_t *lv)
        free(lv);
 }
 
-void be_liveness_remove(be_lv_t *lv, ir_node *irn)
+void be_liveness_remove(be_lv_t *lv, const ir_node *irn)
 {
        if (lv->nodes) {
                unsigned idx = get_irn_idx(irn);
-               struct _lv_walker_t w;
+               lv_remove_walker_t w;
 
                /*
                 * Removes a single irn from the liveness information.
                 * Since an irn can only be live at blocks dominated by the block of its
                 * definition, we only have to process that dominance subtree.
                 */
-               w.lv   = lv;
-               w.data = irn;
+               w.lv  = lv;
+               w.irn = irn;
                dom_tree_walk(get_nodes_block(irn), lv_remove_irn_walker, NULL, &w);
                if(idx < bitset_size(lv->nodes))
                        bitset_clear(lv->nodes, idx);

diff --git a/ir/be/belive.h b/ir/be/belive.h
index 4b19b39..3d69cb0 100644 (file)
--- a/ir/be/belive.h
+++ b/ir/be/belive.h
@@ -81,7 +81,7 @@ void be_liveness_update(be_lv_t *lv, ir_node *irn);
 /**
  * Remove a node from the liveness information.
  */
-void be_liveness_remove(be_lv_t *lv, ir_node *irn);
+void be_liveness_remove(be_lv_t *lv, const ir_node *irn);
 
 /**
  * Introduce a new node to the liveness information.