[PATCH 08/13] vect: Reclassify early break fold left reductions as simple reductions

[Victor Do Nascimento]

From: Victor Do Nascimento 
<vicdo...@ip-10-248-139-187.eu-west-1.compute.internal>

This re-categorization of reductions for uncounted loops involving
reductions leads to the correct calling of
`vect_create_epilog_for_reduction' function.

gcc/ChangeLog:

        * tree-vect-loop.cc (vectorizable_reduction): Reclassify
        uncounted-loop VECT_REDUC_INFO_TYPE as TREE_CODE_REDUCTION.
---
 gcc/tree-vect-loop.cc | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/gcc/tree-vect-loop.cc b/gcc/tree-vect-loop.cc
index 901903cfbea..3b038169c95 100644
--- a/gcc/tree-vect-loop.cc
+++ b/gcc/tree-vect-loop.cc
@@ -7426,8 +7426,9 @@ vectorizable_reduction (loop_vec_info loop_vinfo,
                                 "supported.\n");
              return false;
            }
-         VECT_REDUC_INFO_TYPE (reduc_info)
-           = reduction_type = FOLD_LEFT_REDUCTION;
+         VECT_REDUC_INFO_TYPE (reduc_info) = reduction_type
+           = LOOP_VINFO_NITERS_UNCOUNTED_P (loop_vinfo) ? TREE_CODE_REDUCTION
+           : FOLD_LEFT_REDUCTION;
        }
       else if (!commutative_binary_op_p (orig_code, op.type)
               || !associative_binary_op_p (orig_code, op.type))
-- 
2.43.0