2005-12-20 Richard Guenther <rguenther@suse.de>

        Revert
        2005-12-02  Richard Guenther  <rguenther@suse.de>

        * tree-cfg.c (mark_used_vars): New function.
        (dump_function_to_file): Dump only used VAR_DECLs.

        * gcc.dg/tree-ssa/20031106-6.c: Remove XFAIL.


git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@108852 138bc75d-0d04-0410-961f-82ee72b054a4

1 files changed, 0 insertions, 49 deletions

diff --git a/gcc/tree-cfg.c b/gcc/tree-cfg.c
index d2e688e5afe..37d041ad980 100644
--- a/gcc/tree-cfg.c
+++ b/gcc/tree-cfg.c
@@ -4428,26 +4428,6 @@ tree_duplicate_sese_region (edge entry, edge exit,
 }
 
 
-static tree
-mark_used_vars (tree *tp, int *walk_subtrees, void *used_vars_)
-{
-  bitmap *used_vars = (bitmap *)used_vars_;
-
-  if (walk_subtrees
-      && IS_TYPE_OR_DECL_P (*tp))
-    *walk_subtrees = 0;
-
-  if (!SSA_VAR_P (*tp))
-    return NULL_TREE;
-
-  if (TREE_CODE (*tp) == SSA_NAME)
-    bitmap_set_bit (*used_vars, DECL_UID (SSA_NAME_VAR (*tp)));
-  else
-    bitmap_set_bit (*used_vars, DECL_UID (*tp));
-
-  return NULL_TREE;
-}
-
 /* Dump FUNCTION_DECL FN to file FILE using FLAGS (see TDF_* in tree.h)  */
 
 void
@@ -4482,47 +4462,18 @@ dump_function_to_file (tree fn, FILE *file, int flags)
      BIND_EXPRs, so display them separately.  */
   if (cfun && cfun->decl == fn && cfun->unexpanded_var_list)
     {
-      bitmap used_vars = BITMAP_ALLOC (NULL);
       ignore_topmost_bind = true;
 
-      /* Record vars we'll use dumping the functions tree.  */
-      if (cfun->cfg && basic_block_info)
-	{
-	  FOR_EACH_BB (bb)
-	    {
-	      block_stmt_iterator bsi;
-	      for (bsi = bsi_start (bb); !bsi_end_p (bsi); bsi_next (&bsi))
-	        walk_tree (bsi_stmt_ptr (bsi), mark_used_vars,
-			   &used_vars, NULL);
-	    }
-	  for (vars = cfun->unexpanded_var_list; vars;
-	       vars = TREE_CHAIN (vars))
-	    {
-	      var = TREE_VALUE (vars);
-	      if (TREE_CODE (var) == VAR_DECL
-		  && DECL_INITIAL (var)
-		  && bitmap_bit_p (used_vars, DECL_UID (var)))
-		walk_tree (&DECL_INITIAL (var), mark_used_vars,
-			   &used_vars, NULL);
-	    }
-	}
-
-      /* Dump used vars.  */
       fprintf (file, "{\n");
       for (vars = cfun->unexpanded_var_list; vars; vars = TREE_CHAIN (vars))
 	{
 	  var = TREE_VALUE (vars);
-	  if (cfun->cfg && basic_block_info
-	      && !bitmap_bit_p (used_vars, DECL_UID (var)))
-            continue;
 
 	  print_generic_decl (file, var, flags);
 	  fprintf (file, "\n");
 
 	  any_var = true;
 	}
-
-      BITMAP_FREE (used_vars);
     }
 
   if (cfun && cfun->decl == fn && cfun->cfg && basic_block_info)