Properly sum costs in tree-vect-loop.c (PR tree-optimization/90973).

2019-06-25  Martin Liska  <mliska@suse.cz>

	PR tree-optimization/90973
	* tree-vect-loop.c (vect_get_known_peeling_cost): Sum retval
	of prologue and epilogue.

From-SVN: r272638

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index b18833b..c5b729c 100644 (file)
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,9 @@
+2019-06-25  Martin Liska  <mliska@suse.cz>
+
+       PR tree-optimization/90973
+       * tree-vect-loop.c (vect_get_known_peeling_cost): Sum retval
+       of prologue and epilogue.
+
 2019-06-24  Jan Hubicka  <jh@suse.cz>
 
        * ipa-utils.h (type_with_linkage_p): Verify that type is

diff --git a/gcc/tree-vect-loop.c b/gcc/tree-vect-loop.c
index d3facf6..489bee6 100644 (file)
--- a/gcc/tree-vect-loop.c
+++ b/gcc/tree-vect-loop.c
@@ -3405,8 +3405,8 @@ vect_get_known_peeling_cost (loop_vec_info loop_vinfo, int peel_iters_prologue,
          iterations are unknown, count a taken branch per peeled loop.  */
       retval = record_stmt_cost (prologue_cost_vec, 1, cond_branch_taken,
                                 NULL, 0, vect_prologue);
-      retval = record_stmt_cost (prologue_cost_vec, 1, cond_branch_taken,
-                                NULL, 0, vect_epilogue);
+      retval += record_stmt_cost (prologue_cost_vec, 1, cond_branch_taken,
+                                 NULL, 0, vect_epilogue);
     }
   else
     {