X-Git-Url: http://nsz.repo.hu/git/?a=blobdiff_plain;f=ir%2Fbe%2Fbeifg.c;h=72ff8ad5873142954e64c640b107c7a19617a4dc;hb=b9d45e08e23bcf058fa8f2d9e18dd78e8cccd044;hp=30739fcb05410589f4e908535d1ddbe9ab8c6412;hpb=752b172c21cf24d227a8690620b45964230a180f;p=libfirm

diff --git a/ir/be/beifg.c b/ir/be/beifg.c
index 30739fcb0..72ff8ad58 100644
--- 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);
+}