Added support for SymConst(ofs_ent)

[libfirm] / ir / be / bespillslots.c

diff --git a/ir/be/bespillslots.c b/ir/be/bespillslots.c
index 0c50fb0..b854d61 100644 (file)
--- a/ir/be/bespillslots.c
+++ b/ir/be/bespillslots.c
@@ -189,8 +189,7 @@ static void collect_spills_walker(ir_node *node, void *data) {
        ss_env_t *env = data;
        const arch_env_t *arch_env = env->arch_env;
 
-       // @@@ ia32 classify returns classification of the irn the proj is attached
-       // too, why oh why?...
+       // classify returns classification of the irn the proj is attached to
        if(is_Proj(node))
                return;
 
@@ -743,6 +742,25 @@ static void create_memperms(ss_env_t *env) {
        }
 }
 
+static int count_spillslots(const ss_env_t *env) {
+       const spill_t *spill;
+       int spillcount = set_count(env->spills);
+       bitset_t *counted = bitset_alloca(spillcount);
+       int slotcount;
+
+       slotcount = 0;
+       for(spill = set_first(env->spills); spill != NULL;
+           spill = set_next(env->spills)) {
+               int spillslot = spill->spillslot;
+               if(!bitset_is_set(counted, spillslot)) {
+                       slotcount++;
+                       bitset_set(counted, spillslot);
+               }
+       }
+
+       return slotcount;
+}
+
 void be_coalesce_spillslots(const be_chordal_env_t *chordal_env, int coalesce_spillslots) {
        ss_env_t env;
 
@@ -759,8 +777,14 @@ void be_coalesce_spillslots(const be_chordal_env_t *chordal_env, int coalesce_sp
        /* Get initial spill slots */
        irg_walk_graph(chordal_env->irg, NULL, collect_spills_walker, &env);
 
-       if(coalesce_spillslots)
+       be_stat_ev("spillslots", set_count(env.spills));
+
+       if(coalesce_spillslots) {
                do_greedy_coalescing(&env);
+               if(be_stat_ev_is_active()) {
+                       be_stat_ev("spillslots_after_coalescing", count_spillslots(&env));
+               }
+       }
 
        assign_spillslots(&env);