* expr.c (expand_assignment): Remove obsolete comment.

From-SVN: r202938

gcc/ChangeLog

+2013-09-26  Eric Botcazou  <ebotcazou@adacore.com>
+
+	* expr.c (expand_assignment): Remove obsolete comment.
+
 2013-09-25  Jeff Law  <law@redhat.com>
 
 	* tree-flow.h (thread_through_all_blocks): Prototype moved into
@@ -33,7 +37,7 @@
 	(strip_address_mutations): Add bitfield operations handling.
 	(must_be_index_p): Add shifting and rotate operations handling.
 	(set_address_base): Use must_be_base_p predicate.
-	(set_address_index):Use must_be_index_p predicate.
+	(set_address_index): Use must_be_index_p predicate.
 
 2013-09-25  Alexander Ivchenko  <alexander.ivchenko@intel.com>
 	    Maxim Kuznetsov  <maxim.kuznetsov@intel.com>

gcc/expr.c

@@ -4836,11 +4836,7 @@ expand_assignment (tree to, tree from, bool nontemporal)
 	      /* If the field is at offset zero, we could have been given the
 		 DECL_RTX of the parent struct.  Don't munge it.  */
 	      to_rtx = shallow_copy_rtx (to_rtx);
-
 	      set_mem_attributes_minus_bitpos (to_rtx, to, 0, bitpos);
-
-	      /* Deal with volatile and readonly fields.  The former is only
-		 done for MEM.  Also set MEM_KEEP_ALIAS_SET_P if needed.  */
 	      if (volatilep)
 		MEM_VOLATILE_P (to_rtx) = 1;
 	    }