Patch by rth to fix inline-of-an-inline return-value bug.

From-SVN: r36654

gcc/ChangeLog

+Wed Sep 27 14:00:07 2000  Donald Lindsay  <dlindsay@cygnus.com>
+
+	* integrate.c (copy_insn_list): if an ignored return value
+	is being clobbered, skip cloning that into the inline copy.
+
 2000-09-27  Joseph S. Myers  <jsm28@cam.ac.uk>
 
 	* extend.texi, invoke.texi, gcc.texi, install.texi: Consistently

gcc/integrate.c

@@ -1294,6 +1294,13 @@ copy_insn_list (insns, map, static_chain_value)
 		break;
 	    }
 
+	  /* Similarly if an ignored return value is clobbered.  */
+	  else if (map->inline_target == 0
+		   && GET_CODE (pattern) == CLOBBER
+		   && GET_CODE (XEXP (pattern, 0)) == REG
+		   && REG_FUNCTION_VALUE_P (XEXP (pattern, 0)))
+	    break;
+
 	  /* If this is setting the static chain rtx, omit it.  */
 	  else if (static_chain_value != 0
 		   && set != 0