re PR c/8467 (Bug in sibling call optimization)

2002-11-11  Franz Sirl  <Franz.Sirl-kernel@lauterbach.com>

	PR c/8467
	* gcc.c-torture/execute/20021111-1.c

From-SVN: r59026

gcc/ChangeLog

+2002-11-11  Franz Sirl  <Franz.Sirl-kernel@lauterbach.com>
+
+	PR c/8467
+	* stmt.c (tail_recursion_args): Handle DECL_MODE differing from the
+	mode of DECL_RTL case.
+
 2002-11-11  Janis Johnson  <janis187@us.ibm.com>
 
 	* doc/contrib.texi: Merge in the list from the libstdc++ web pages.

gcc/stmt.c

@@ -3311,8 +3311,18 @@ tail_recursion_args (actuals, formals)
       if (GET_MODE (DECL_RTL (f)) == GET_MODE (argvec[i]))
 	emit_move_insn (DECL_RTL (f), argvec[i]);
       else
-	convert_move (DECL_RTL (f), argvec[i],
-		      TREE_UNSIGNED (TREE_TYPE (TREE_VALUE (a))));
+	{
+	  rtx tmp = argvec[i];
+
+	  if (DECL_MODE (f) != GET_MODE (DECL_RTL (f)))
+	    {
+	      tmp = gen_reg_rtx (DECL_MODE (f));
+	      convert_move (tmp, argvec[i],
+			    TREE_UNSIGNED (TREE_TYPE (TREE_VALUE (a))));
+	    }
+	  convert_move (DECL_RTL (f), tmp,
+			TREE_UNSIGNED (TREE_TYPE (TREE_VALUE (a))));
+	}
     }
 
   free_temp_slots ();

gcc/testsuite/ChangeLog

+2002-11-11  Franz Sirl  <Franz.Sirl-kernel@lauterbach.com>
+
+	PR c/8467
+	* gcc.c-torture/execute/20021111-1.c
+
 2002-11-09  Eric Botcazou  <ebotcazou@libertysurf.fr>
 
 	PR c/8439

gcc/testsuite/gcc.c-torture/execute/20021111-1.c

+/* Origin: PR c/8467 */
+
+extern void abort (void);
+extern void exit (int);
+
+int aim_callhandler(int sess, int conn, unsigned short family, unsigned short type);
+
+int aim_callhandler(int sess, int conn, unsigned short family, unsigned short type)
+{
+  static int i = 0;
+
+  if (!conn)
+    return 0;
+
+  if (type == 0xffff)
+    {
+      return 0;
+    }
+
+  if (i >= 1)
+    abort ();
+
+  i++;
+  return aim_callhandler(sess, conn, family, (unsigned short) 0xffff);
+}
+
+int main (void)
+{
+  aim_callhandler (0, 1, 0, 0);
+  exit (0);
+}