diff --git a/gcc/tree-vectorizer.c b/gcc/tree-vectorizer.c
index edb7538a67f00cd80a608ee82510cf437fe88083..029d59016c9652f87d80fc5500f89532c79a66d0 100644
--- a/gcc/tree-vectorizer.c
+++ b/gcc/tree-vectorizer.c
@@ -81,7 +81,7 @@ along with GCC; see the file COPYING3.  If not see
 #include "gimple-pretty-print.h"
 #include "opt-problem.h"
 #include "internal-fn.h"
-
+#include "tree-ssa-sccvn.h"
 
 /* Loop or bb location, with hotness information.  */
 dump_user_location_t vect_location;
@@ -1298,6 +1298,17 @@ vectorize_loops (void)
       if (has_mask_store
 	  && targetm.vectorize.empty_mask_is_expensive (IFN_MASK_STORE))
 	optimize_mask_stores (loop);
+
+      auto_bitmap exit_bbs;
+      /* Perform local CSE, this esp. helps because we emit code for
+	 predicates that need to be shared for optimal predicate usage.
+	 However reassoc will re-order them and prevent CSE from working
+	 as it should.  CSE only the loop body, not the entry.  */
+      bitmap_set_bit (exit_bbs, single_exit (loop)->dest->index);
+
+      edge entry = EDGE_PRED (loop_preheader_edge (loop)->src, 0);
+      do_rpo_vn (cfun, entry, exit_bbs);
+
       loop->aux = NULL;
     }