Add a debug counter for the tree-ssa level if-conversion.

2010-06-25  Sebastian Pop  <sebastian.pop@amd.com>

	* Makefile.in (tree-if-conv.o): Depends on DBGCNT_H.
	* dbgcnt.def (if_conversion_tree): New DEBUG_COUNTER.
	* tree-if-conv.c: Include dbgcnt.h.
	(tree_if_conversion): Use if_conversion_tree to count the number of
	if-convertible loops.

From-SVN: r161395

gcc/ChangeLog

+2010-06-25  Sebastian Pop  <sebastian.pop@amd.com>
+
+	* Makefile.in (tree-if-conv.o): Depends on DBGCNT_H.
+	* dbgcnt.def (if_conversion_tree): New DEBUG_COUNTER.
+	* tree-if-conv.c: Include dbgcnt.h.
+	(tree_if_conversion): Use if_conversion_tree to count the number of
+	if-convertible loops.
+
 2010-06-25  Changpeng Fang  <changpeng.fang@amd.com>
 
 	* common.opt (fprefetch-loop-arrays): Re-define

gcc/Makefile.in

@@ -2501,7 +2501,7 @@ tree-nested.o: tree-nested.c $(CONFIG_H) $(SYSTEM_H) $(TM_H) $(TREE_H) \
 tree-if-conv.o: tree-if-conv.c $(CONFIG_H) $(SYSTEM_H) coretypes.h $(TM_H) \
    $(TREE_H) $(FLAGS_H) $(TIMEVAR_H) $(BASIC_BLOCK_H) $(TREE_FLOW_H) \
    $(CFGLOOP_H) $(TREE_DATA_REF_H) $(TREE_PASS_H) $(DIAGNOSTIC_H) \
-   $(TREE_DUMP_H) tree-pretty-print.h gimple-pretty-print.h
+   $(TREE_DUMP_H) $(DBGCNT_H) tree-pretty-print.h gimple-pretty-print.h
 tree-iterator.o : tree-iterator.c $(CONFIG_H) $(SYSTEM_H) $(TREE_H) \
    coretypes.h $(GGC_H) tree-iterator.h $(GIMPLE_H) gt-tree-iterator.h
 tree-dfa.o : tree-dfa.c $(TREE_FLOW_H) $(CONFIG_H) $(SYSTEM_H) \

gcc/dbgcnt.def

@@ -160,6 +160,7 @@ DEBUG_COUNTER (global_alloc_at_reg)
 DEBUG_COUNTER (hoist)
 DEBUG_COUNTER (ia64_sched2)
 DEBUG_COUNTER (if_conversion)
+DEBUG_COUNTER (if_conversion_tree)
 DEBUG_COUNTER (if_after_combine)
 DEBUG_COUNTER (if_after_reload)
 DEBUG_COUNTER (local_alloc_for_sched)

gcc/tree-if-conv.c

@@ -98,6 +98,7 @@ along with GCC; see the file COPYING3.  If not see
 #include "tree-data-ref.h"
 #include "tree-scalar-evolution.h"
 #include "tree-pass.h"
+#include "dbgcnt.h"
 
 /* List of basic blocks in if-conversion-suitable order.  */
 static basic_block *ifc_bbs;
@@ -1178,7 +1179,8 @@ tree_if_conversion (struct loop *loop)
 {
   ifc_bbs = NULL;
 
-  if (!if_convertible_loop_p (loop))
+  if (!if_convertible_loop_p (loop)
+      || !dbg_cnt (if_conversion_tree))
     goto cleanup;
 
   /* Now all statements are if-convertible.  Combine all the basic