- reserve the visited resource

[libfirm] / ir / be / bestat.c

diff --git a/ir/be/bestat.c b/ir/be/bestat.c
index a1179a2..af25bb4 100644 (file)
--- a/ir/be/bestat.c
+++ b/ir/be/bestat.c
@@ -23,9 +23,7 @@
  * @author      Christian Wuerdig, Matthias Braun
  * @version     $Id$
  */
-#ifdef HAVE_CONFIG_H
 #include "config.h"
-#endif
 
 #include <time.h>
 
@@ -124,7 +122,6 @@ void be_do_stat_reg_pressure(be_irg_t *birg, const arch_register_class_t *cls) {
 
 
 typedef struct _estimate_irg_costs_env_t {
-       const arch_env_t *arch_env;
        ir_exec_freq     *execfreqs;
        double           costs;
 } estimate_irg_costs_env_t;
@@ -142,11 +139,10 @@ static void estimate_block_costs(ir_node *block, void *data)
        env->costs += costs * get_block_execfreq(env->execfreqs, block);
 }
 
-double be_estimate_irg_costs(ir_graph *irg, const arch_env_t *arch_env, ir_exec_freq *execfreqs)
+double be_estimate_irg_costs(ir_graph *irg, ir_exec_freq *execfreqs)
 {
        estimate_irg_costs_env_t env;
 
-       env.arch_env  = arch_env;
        env.execfreqs = execfreqs;
        env.costs     = 0.0;
 
@@ -157,11 +153,9 @@ double be_estimate_irg_costs(ir_graph *irg, const arch_env_t *arch_env, ir_exec_
 
 
 
-static be_node_stats_t *stats;
-
 static void node_stat_walker(ir_node *irn, void *data)
 {
-       (void) data;
+       be_node_stats_t *const stats = data;
 
        /* if the node is a normal phi */
        if(is_Phi(irn)) {
@@ -188,10 +182,8 @@ static void node_stat_walker(ir_node *irn, void *data)
 
 void be_collect_node_stats(be_node_stats_t *new_stats, be_irg_t *birg)
 {
-       stats = new_stats;
-
-       memset(stats, 0, sizeof(*stats));
-       irg_walk_graph(birg->irg, NULL, node_stat_walker, NULL);
+       memset(new_stats, 0, sizeof(*new_stats));
+       irg_walk_graph(birg->irg, NULL, node_stat_walker, new_stats);
 }
 
 void be_subtract_node_stats(be_node_stats_t *stats, be_node_stats_t *sub)