Index: gcc/config/rs6000/predicates.md
===================================================================
--- gcc/config/rs6000/predicates.md	(revision 192236)
+++ gcc/config/rs6000/predicates.md	(working copy)
@@ -941,12 +941,16 @@
 {
   if (MEM_P (op))
     {
+      if (! volatile_ok && MEM_VOLATILE_P (op))
+	return 0;
       if (mode == DFmode)
 	mode = V2DFmode;
       else if (mode == DImode)
 	mode = V2DImode;
       else
-	gcc_unreachable ();        
+	gcc_unreachable ();
+      return memory_address_addr_space_p (mode, XEXP (op, 0),
+					  MEM_ADDR_SPACE (op));
     }
   return input_operand (op, mode);
 })