tree-vect-loop.c (vect_transform_loop): Properly compute upper bound for the…

tree-vect-loop.c (vect_transform_loop): Properly compute upper bound for the epilogue when doing epilogue vectorization.

2018-12-03  Richard Biener  <rguenther@suse.de>

	* tree-vect-loop.c (vect_transform_loop): Properly compute
	upper bound for the epilogue when doing epilogue vectorization.

From-SVN: r266737

gcc/ChangeLog

+2018-12-03  Richard Biener  <rguenther@suse.de>
+
+	* tree-vect-loop.c (vect_transform_loop): Properly compute
+	upper bound for the epilogue when doing epilogue vectorization.
+
 2018-12-03  Ilya Leoshkevich  <iii@linux.ibm.com>
 
 	PR target/80080

gcc/tree-vect-loop.c

@@ -8548,9 +8548,12 @@ vect_transform_loop (loop_vec_info loop_vinfo)
 	{
 	  unsigned int eiters
 	    = (LOOP_VINFO_INT_NITERS (loop_vinfo)
-	       - LOOP_VINFO_PEELING_FOR_ALIGNMENT (loop_vinfo));
-	  eiters = eiters % lowest_vf;
+	       - LOOP_VINFO_PEELING_FOR_ALIGNMENT (loop_vinfo)
+	       - LOOP_VINFO_PEELING_FOR_GAPS (loop_vinfo));
+	  eiters
+	    = eiters % lowest_vf + LOOP_VINFO_PEELING_FOR_GAPS (loop_vinfo);
 	  epilogue->nb_iterations_upper_bound = eiters - 1;
+	  epilogue->any_upper_bound = true;
 
 	  unsigned int ratio;
 	  while (next_size < vector_sizes.length ()