we can't guarantee that there won't be dead blocks, so remove them

[libfirm] / ir / be / bestat.c

diff --git a/ir/be/bestat.c b/ir/be/bestat.c
index a4f16aa..155ed40 100644 (file)
--- a/ir/be/bestat.c
+++ b/ir/be/bestat.c
@@ -87,7 +87,9 @@ static void check_reg_pressure_class(pressure_walker_env_t *env,
        if(max_live > env->max_pressure)
                env->max_pressure = max_live;
 
+#ifdef FIRM_STATISTICS
        stat_be_block_regpressure(irg, block, max_live, cls->name);
+#endif
        ir_nodeset_destroy(&live_nodes);
 }
 
@@ -122,7 +124,6 @@ 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;
@@ -140,11 +141,10 @@ 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;
 
@@ -155,11 +155,9 @@ 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)) {
@@ -186,10 +184,8 @@ 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)