diff --git a/gcc/testsuite/gcc.dg/vect/pr111860-2.c b/gcc/testsuite/gcc.dg/vect/pr111860-2.c
new file mode 100644
index 0000000000000000000000000000000000000000..07f64ffb5318c9d7817d46802d123cc9a2d65ec9
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/vect/pr111860-2.c
@@ -0,0 +1,17 @@
+/* { dg-do compile } */
+/* { dg-options "-O -fno-tree-sink -ftree-vectorize" } */
+int buffer_ctrl_ctx_0, buffer_ctrl_p1, buffer_ctrl_cmd;
+
+int
+buffer_ctrl (long ret, int i)
+{
+  switch (buffer_ctrl_cmd)
+    {
+    case 1:
+      buffer_ctrl_ctx_0 = 0;
+      for (; i; i++)
+	if (buffer_ctrl_p1)
+	  ret++;
+    }
+  return ret;
+}
diff --git a/gcc/testsuite/gcc.dg/vect/pr111860-3.c b/gcc/testsuite/gcc.dg/vect/pr111860-3.c
new file mode 100644
index 0000000000000000000000000000000000000000..07f64ffb5318c9d7817d46802d123cc9a2d65ec9
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/vect/pr111860-3.c
@@ -0,0 +1,17 @@
+/* { dg-do compile } */
+/* { dg-options "-O -fno-tree-sink -ftree-vectorize" } */
+int buffer_ctrl_ctx_0, buffer_ctrl_p1, buffer_ctrl_cmd;
+
+int
+buffer_ctrl (long ret, int i)
+{
+  switch (buffer_ctrl_cmd)
+    {
+    case 1:
+      buffer_ctrl_ctx_0 = 0;
+      for (; i; i++)
+	if (buffer_ctrl_p1)
+	  ret++;
+    }
+  return ret;
+}
diff --git a/gcc/testsuite/gcc.dg/vect/pr111860.c b/gcc/testsuite/gcc.dg/vect/pr111860.c
new file mode 100644
index 0000000000000000000000000000000000000000..36f0774601040418bc6b7f27c9425b2bf93b18cb
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/vect/pr111860.c
@@ -0,0 +1,16 @@
+/* { dg-do compile } */
+
+int optimize_path_n, optimize_path_d;
+int *optimize_path_d_0;
+extern void path_threeOpt( long);
+void optimize_path() {
+  int i;
+  long length;
+  i = 0;
+  for (; i <= optimize_path_n; i++)
+    optimize_path_d = 0;
+  i = 0;
+  for (; i < optimize_path_n; i++)
+    length += optimize_path_d_0[i];
+  path_threeOpt(length);
+}
diff --git a/gcc/tree-vect-loop-manip.cc b/gcc/tree-vect-loop-manip.cc
index 1f7779b9834c3aef3c6a993fab916224fab03147..fc55278e63f7a48943fdc32c5e207110cf14507e 100644
--- a/gcc/tree-vect-loop-manip.cc
+++ b/gcc/tree-vect-loop-manip.cc
@@ -1626,13 +1626,33 @@ slpeel_tree_duplicate_loop_to_edge_cfg (class loop *loop, edge loop_exit,
 	  edge temp_e = redirect_edge_and_branch (exit, new_preheader);
 	  flush_pending_stmts (temp_e);
 	}
-
       /* Record the new SSA names in the cache so that we can skip materializing
 	 them again when we fill in the rest of the LCSSA variables.  */
       for (auto phi : new_phis)
 	{
 	  tree new_arg = gimple_phi_arg (phi, 0)->def;
 	  new_phi_args.put (new_arg, gimple_phi_result (phi));
+
+	  if (!SSA_VAR_P (new_arg))
+	    continue;
+	  /* If the PHI MEM node dominates the loop then we shouldn't create
+	      a new LC-SSSA PHI for it in the intermediate block.   */
+	  gimple *def_stmt = SSA_NAME_DEF_STMT (new_arg);
+	  basic_block def_bb = gimple_bb (def_stmt);
+	  /* A MEM phi that consitutes a new DEF for the vUSE chain can either
+	     be a .VDEF or a PHI that operates on MEM.  */
+	  if (((gimple_vdef (def_stmt) || is_a <gphi *> (def_stmt))
+		  /* And said definition must not be inside the main loop.  */
+	       && (!def_bb || !flow_bb_inside_loop_p (loop, def_bb)))
+	      /* Or we must be a parameter.  In the last two cases we may remove
+		 a non-MEM PHI node, but since they dominate both loops the
+		 removal is unlikely to cause trouble as the exits must already
+		 be using them.  */
+	      || SSA_NAME_IS_DEFAULT_DEF (new_arg))
+	    {
+	      auto gsi = gsi_for_stmt (phi);
+	      remove_phi_node (&gsi, true);
+	    }
 	}
 
       /* Copy the current loop LC PHI nodes between the original loop exit