re PR tree-optimization/26420 (-ftree-vectorizer-verbose=1 prints unvectorized loops...

2007-03-05  Richard Guenther  <rguenther@suse.de>
	Dorit Nuzman  <dorit@il.ibm.com>

	PR tree-optimization/26420
	* tree-vectorizer.c (vectorize_loops): Bail out early if there
	are no loops in the function.  Only print the number of
	vectorized loops if it is greater than zero or we are supposed
	to print information about unvectorized loops.

Co-Authored-By: Dorit Nuzman <dorit@il.ibm.com>
From-SVN: r122544

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 5b125fdf6f3ec85c67c63d5839c65211534c64f5..0b6a01d898e3942ebe6922225841eced9ffd6340 100644 (file)
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,12 @@
+2007-03-05  Richard Guenther  <rguenther@suse.de>
+       Dorit Nuzman  <dorit@il.ibm.com>
+
+       PR tree-optimization/26420
+       * tree-vectorizer.c (vectorize_loops): Bail out early if there
+       are no loops in the function.  Only print the number of
+       vectorized loops if it is greater than zero or we are supposed
+       to print information about unvectorized loops.
+
 2007-03-05  Revital Eres  <eres@il.ibm.com>
 
       * gcc.dg/var-expand1.c: New test.

diff --git a/gcc/tree-vectorizer.c b/gcc/tree-vectorizer.c
index 2a53b9c9fa3a083f10bccd00a24b704767eeed56..b0aedf74b2c32e42ece5467127fb633f9568901a 100644 (file)
--- a/gcc/tree-vectorizer.c
+++ b/gcc/tree-vectorizer.c
@@ -2196,6 +2196,12 @@ vectorize_loops (void)
   loop_iterator li;
   struct loop *loop;
 
+  vect_loops_num = number_of_loops ();
+
+  /* Bail out if there are no loops.  */
+  if (vect_loops_num <= 1)
+    return 0;
+
   /* Fix the verbosity level if not defined explicitly by the user.  */
   vect_set_dump_settings ();
 
@@ -2208,7 +2214,6 @@ vectorize_loops (void)
   /* If some loop was duplicated, it gets bigger number 
      than all previously defined loops. This fact allows us to run 
      only over initial loops skipping newly generated ones.  */
-  vect_loops_num = number_of_loops ();
   FOR_EACH_LOOP (li, loop, 0)
     {
       loop_vec_info loop_vinfo;
@@ -2225,7 +2230,9 @@ vectorize_loops (void)
     }
   vect_loop_location = UNKNOWN_LOC;
 
-  if (vect_print_dump_info (REPORT_VECTORIZED_LOOPS))
+  if (vect_print_dump_info (REPORT_UNVECTORIZED_LOOPS)
+      || (vect_print_dump_info (REPORT_VECTORIZED_LOOPS)
+         && num_vectorized_loops > 0))
     fprintf (vect_dump, "vectorized %u loops in function.\n",
             num_vectorized_loops);