If -Os use load/store multiple instructions

From-SVN: r21511

gcc/ChangeLog

+Fri Jul 31 20:22:02 1998  Michael Meissner  <meissner@cygnus.com>
+
+	* rs6000.c (rs6000_override_options): If big endian and -Os, use
+	load/store multiple instructions unless user overrides.
+
 Fri Jul 31 17:08:59 1998  Jeffrey A Law  (law@cygnus.com)
 
 	* ns32k/netbsd.h: Fix typo.

gcc/config/rs6000/rs6000.c

@@ -276,6 +276,11 @@ rs6000_override_options (default_cpu)
 	}
     }
 
+  /* If we are optimizing big endian systems for space, use the
+     store multiple instructions.  */
+  if (BYTES_BIG_ENDIAN && optimize_size)
+    target_flags |= MASK_MULTIPLE;
+
   /* If -mmultiple or -mno-multiple was explicitly used, don't
      override with the processor default */
   if (TARGET_MULTIPLE_SET)