rl78.c (need_to_save): Save register 22 if it is used, even if it is not being…

rl78.c (need_to_save): Save register 22 if it is used, even if it is not being used as a frame pointer.

	* config/rl78/rl78.c (need_to_save): Save register 22 if it is
	used, even if it is not being used as a frame pointer.

From-SVN: r222845

gcc/ChangeLog

+2015-05-06  Nick Clifton  <nickc@redhat.com>
+
+	* config/rl78/rl78.c (need_to_save): Save register 22 if it is
+	used, even if it is not being used as a frame pointer.
+
 2015-05-05  Jason Merrill  <jason@redhat.com>
 
 	* dwarf2out.c (gen_member_die): Don't emit anything for an

gcc/config/rl78/rl78.c

@@ -687,7 +687,8 @@ need_to_save (unsigned int regno)
       return df_regs_ever_live_p (regno);
     }
 
-  if (regno == FRAME_POINTER_REGNUM && frame_pointer_needed)
+  if (regno == FRAME_POINTER_REGNUM
+      && (frame_pointer_needed || df_regs_ever_live_p (regno)))
     return true;
   if (fixed_regs[regno])
     return false;