re PR tree-optimization/43572 (FAIL: gfortran.dg/PR19872.f execution test;…

re PR tree-optimization/43572 (FAIL: gfortran.dg/PR19872.f execution test; formatted read - wrong numbers)

2010-04-23  Richard Guenther  <rguenther@suse.de>

	PR tree-optimization/43572
	* tree-tailcall.c (find_tail_calls): Allow PARM_DECL uses.

From-SVN: r158671

gcc/ChangeLog

 2010-04-23  Richard Guenther  <rguenther@suse.de>
 
+	PR tree-optimization/43572
+	* tree-tailcall.c (find_tail_calls): Allow PARM_DECL uses.
+
+2010-04-23  Richard Guenther  <rguenther@suse.de>
+
 	PR lto/43455
 	* tree-inline.c (tree_can_inline_p): Also check compatibility
 	of return types.

gcc/tree-tailcall.c

@@ -458,7 +458,8 @@ find_tail_calls (basic_block bb, struct tailcall **ret)
      to local variables.  */
   FOR_EACH_REFERENCED_VAR (var, rvi)
     {
-      if (!is_global_var (var)
+      if (TREE_CODE (var) != PARM_DECL
+	  && auto_var_in_fn_p (var, cfun->decl)
 	  && ref_maybe_used_by_stmt_p (call, var))
 	return;
     }