Added support for SymConst(ofs_ent)

[libfirm] / ir / be / beifg.c

diff --git a/ir/be/beifg.c b/ir/be/beifg.c
index 30739fc..72ff8ad 100644 (file)
--- a/ir/be/beifg.c
+++ b/ir/be/beifg.c
@@ -37,6 +37,7 @@
 #include "irnode_t.h"
 #include "irprintf.h"
 #include "irtools.h"
+#include "irbitset.h"
 #include "beifg_t.h"
 #include "beifg_impl.h"
 #include "irphase.h"
@@ -649,3 +650,58 @@ void be_ifg_dump_dot(be_ifg_t *ifg, ir_graph *irg, FILE *file, const be_ifg_dump
        fprintf(file, "}\n");
        bitset_free(nodes);
 }
+
+static void int_comp_rec(const be_chordal_env_t *cenv, ir_node *n, bitset_t *seen)
+{
+       void *neigh_it  = be_ifg_neighbours_iter_alloca(cenv->ifg);
+       ir_node *m;
+
+       be_ifg_foreach_neighbour(cenv->ifg, neigh_it, n, m) {
+               if(!bitset_contains_irn(seen, m) && !arch_irn_is(cenv->birg->main_env->arch_env, m, ignore)) {
+                       bitset_add_irn(seen, m);
+                       int_comp_rec(cenv, m, seen);
+               }
+       }
+
+}
+
+static int int_component_stat(const be_chordal_env_t *cenv)
+{
+       int n_comp     = 0;
+       void *nodes_it = be_ifg_nodes_iter_alloca(cenv->ifg);
+       bitset_t *seen = bitset_irg_malloc(cenv->irg);
+
+       ir_node *n;
+
+       be_ifg_foreach_node(cenv->ifg, nodes_it, n) {
+               if(!bitset_contains_irn(seen, n) && !arch_irn_is(cenv->birg->main_env->arch_env, n, ignore)) {
+                       ++n_comp;
+                       bitset_add_irn(seen, n);
+                       int_comp_rec(cenv, n, seen);
+               }
+       }
+
+       free(seen);
+       return n_comp;
+}
+
+void be_ifg_stat(const be_chordal_env_t *cenv, be_ifg_stat_t *stat)
+{
+       void *nodes_it  = be_ifg_nodes_iter_alloca(cenv->ifg);
+       void *neigh_it  = be_ifg_neighbours_iter_alloca(cenv->ifg);
+       bitset_t *nodes = bitset_irg_malloc(cenv->irg);
+
+       ir_node *n, *m;
+
+       memset(stat, 0, sizeof(stat[0]));
+       be_ifg_foreach_node(cenv->ifg, nodes_it, n) {
+               stat->n_nodes += 1;
+               be_ifg_foreach_neighbour(cenv->ifg, neigh_it, n, m) {
+                       bitset_add_irn(nodes, n);
+                       stat->n_edges += !bitset_contains_irn(nodes, m);
+               }
+       }
+
+       stat->n_comps = int_component_stat(cenv);
+       bitset_free(nodes);
+}