[PATCH] Remove unnecessary check on scalar_niter == 0

[Richard Biener via Gcc-patches]

The following removes an unnecessary check.

Bootstrapped and tested on x86_64-unknown-linux-gnu, pushed.

        * tree-vect-loop.cc (vect_analyze_loop_costing): Remove
        check guarding scalar_niter underflow.
---
 gcc/tree-vect-loop.cc | 7 -------
 1 file changed, 7 deletions(-)

diff --git a/gcc/tree-vect-loop.cc b/gcc/tree-vect-loop.cc
index f39a1ecb306..3a43bbfa0ee 100644
--- a/gcc/tree-vect-loop.cc
+++ b/gcc/tree-vect-loop.cc
@@ -2180,13 +2180,6 @@ vect_analyze_loop_costing (loop_vec_info loop_vinfo,
                = LOOP_VINFO_PEELING_FOR_GAPS (orig_loop_vinfo) ? 1 : 0;
              scalar_niters = ((scalar_niters - gap - prolog_peeling)
                               % lowest_vf + gap);
-             if (scalar_niters == 0)
-               {
-                 if (dump_enabled_p ())
-                   dump_printf_loc (MSG_MISSED_OPTIMIZATION, vect_location,
-                                    "not vectorized: loop never entered\n");
-                 return 0;
-               }
            }
        }
 
-- 
2.35.3