dwarf2out.c (add_AT_location_description): Allow (mem (plus (pseudo) (...)) too.

        * dwarf2out.c (add_AT_location_description): Allow
        (mem (plus (pseudo) (...)) too.

From-SVN: r30480

gcc/ChangeLog

+Wed Nov 10 15:56:16 1999  Jeffrey A Law  (law@cygnus.com)
+
+        * dwarf2out.c (add_AT_location_description): Allow
+        (mem (plus (pseudo) (...)) too.
+
 Wed Nov 10 10:52:42 1999  Tom Tromey  <tromey@cygnus.com>
 
 	* gcc.c (do_spec_1): Support text between `%u' and `%O'.

gcc/dwarf2out.c

@@ -6732,6 +6732,13 @@ add_AT_location_description (die, attr_kind, rtl)
   if (is_pseudo_reg (rtl)
       || (GET_CODE (rtl) == MEM
 	  && is_pseudo_reg (XEXP (rtl, 0)))
+      /* This can happen for a PARM_DECL with a DECL_INCOMING_RTL which 
+	 references the internal argument pointer (a pseudo) in a function
+	 where all references to the internal argument pointer were
+	 eliminated via the optimizers.  */
+      || (GET_CODE (rtl) == MEM
+	  && GET_CODE (XEXP (rtl, 0)) == PLUS
+	  && is_pseudo_reg (XEXP (XEXP (rtl, 0), 0)))
       || (GET_CODE (rtl) == CONCAT
 	  && is_pseudo_reg (XEXP (rtl, 0))
 	  && is_pseudo_reg (XEXP (rtl, 1))))