added scheduling statistics for number of ready nodes

ir/be/Makefile.in

@@ -28,7 +28,8 @@ SOURCES += 	Makefile.in besched.h belistsched.h belistsched.c \
 	bechordal_draw.h beirgmod.c beirgmod.h benode.c benode_t.h \
 	bessadestr.c beifg_std.c bespill.c bespillbelady.c bespillilp.c beuses.c \
 	belower.c belower.h beraextern.c beabi.c beabi.h beabi_t.h \
-	benodesets.c benodesets.h bemachnode.c bemachnode.h beinsn.c
+	benodesets.c benodesets.h bemachnode.c bemachnode.h beinsn.c \
+	bestat.h bestat.c
 
 
 include $(topdir)/MakeRules

ir/be/belistsched.c

@@ -33,6 +33,7 @@
 #include "belive_t.h"
 #include "belistsched.h"
 #include "bearch.h"
+#include "bestat.h"
 
 #define MAX(x,y) ((x) > (y) ? (x) : (y))
 #define MIN(x,y) ((x) < (y) ? (x) : (y))
@@ -689,6 +690,9 @@ static void list_sched_block(ir_node *block, void *env_ptr)
 	be.curr_time += phi_seen;
 
 	while (nodeset_count(be.ready_set) > 0) {
+		/* collect statitics about amount of ready nodes */
+		be_do_stat_sched_ready(block, be.ready_set);
+
 		/* select a node to be scheduled and check if it was ready */
 		irn = select_node(&be);
 

ir/be/bemain.c

@@ -316,7 +316,7 @@ static void be_main_loop(FILE *file_handle)
 		 * Note that this requires disabling the edges here.
 		 */
 		edges_deactivate(irg);
-		dead_node_elimination(irg);
+		//dead_node_elimination(irg);
 		edges_activate(irg);
 
 		/* Compute loop nesting information (for weighting copies) */

ir/be/bestat.c

@@ -44,3 +44,10 @@ void be_do_stat_reg_pressure(be_irg_t *birg) {
 	/* Collect register pressure information for each block */
 	irg_block_walk_graph(birg->irg, stat_reg_pressure_block, NULL, birg);
 }
+
+/**
+ * Notify statistic module about amount of ready nodes.
+ */
+void be_do_stat_sched_ready(ir_node *block, nodeset *ready_set) {
+	hook_be_block_sched_ready(block, get_irn_irg(block), nodeset_count(ready_set));
+}

ir/be/bestat.h

@@ -2,6 +2,7 @@
 #define _BESTAT_H_
 
 #include "be_t.h"
+#include "benodesets.h"
 
 /**
  * Collects statistics information about register pressure.
@@ -9,4 +10,11 @@
  */
 void be_do_stat_reg_pressure(be_irg_t *birg);
 
+/**
+ * Collect statistics about amount of redy nodes per block
+ * @param block     The block
+ * @param ready_set A set of ready nodes
+ */
+void be_do_stat_sched_ready(ir_node *block, nodeset *ready_set);
+
 #endif /* _BESTAT_H_ */