diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index df391f20e69..3be4d03bdd8 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,8 @@
+2008-09-11  Ira Rosen  <irar@il.ibm.com>
+
+	* tree-vect-transform.c (vectorizable_store): Use the rhs vector type
+	for alias check.
+
 2008-09-10  Jakub Jelinek  <jakub@redhat.com>
 
 	PR middle-end/37338
diff --git a/gcc/tree-vect-transform.c b/gcc/tree-vect-transform.c
index a25960b58ec..a889836f298 100644
--- a/gcc/tree-vect-transform.c
+++ b/gcc/tree-vect-transform.c
@@ -5180,6 +5180,9 @@ vectorizable_store (gimple stmt, gimple_stmt_iterator *gsi, gimple *vec_stmt,
       return false;
     }
 
+  /* The type of the vector store is determined by the rhs.  */
+  vectype = get_vectype_for_scalar_type (TREE_TYPE (op));
+
   /* If accesses through a pointer to vectype do not alias the original
      memory reference we have a problem.  */
   if (get_alias_set (vectype) != get_alias_set (TREE_TYPE (scalar_dest))