rx.c (rx_get_stack_layout): Fix allocation of second register to push into the stack frame when...

        * config/rx/rx.c (rx_get_stack_layout): Fix allocation of second
        register to push into the stack frame when the accumulator has to
        be saved during interrupts.

From-SVN: r155652

gcc/ChangeLog

+2010-01-05  Nick Clifton  <nickc@redhat.com>
+
+	* config/rx/rx.c (rx_get_stack_layout): Fix allocation of second
+	register to push into the stack frame when the accumulator has to
+	be saved during interrupts.
+
 2010-01-05  Eric Fisher  <joefoxreal@gmail.com>
 
 	* doc/invoke.texi: Remove the documentation about option

gcc/config/rx/rx.c

@@ -1072,8 +1072,8 @@ rx_get_stack_layout (unsigned int * lowest,
       save_mask |= (1 << 13) | (1 << 14);
       if (low == 0)
 	low = 13;
-      if (high == 0)
-	high = 14;
+      if (high == 0 || low == high)
+	high = low + 1;
     }
 
   /* Decide if it would be faster fill in the call-saved area of the stack