obtained gcc-4.6.4.tar.bz2 from upstream website;upstream

verified gcc-4.6.4.tar.bz2.sig;
imported gcc-4.6.4 source tree from verified upstream tarball.

downloading a git-generated archive based on the 'upstream' tag
should provide you with a source tree that is binary identical
to the one extracted from the above tarball.

if you have obtained the source via the command 'git clone',
however, do note that line-endings of files in your working
directory might differ from line-endings of the respective
files in the upstream repository.

1 files changed, 121 insertions, 0 deletions

diff --git a/gcc/tree-iterator.h b/gcc/tree-iterator.h
new file mode 100644
index 000000000..7cdd22ab7
--- /dev/null
+++ b/gcc/tree-iterator.h
@@ -0,0 +1,121 @@
+/* Iterator routines for manipulating GENERIC tree statement list.
+   Copyright (C) 2003, 2004, 2007, 2010 Free Software Foundation, Inc.
+   Contributed by Andrew MacLeod  <amacleod@redhat.com>
+
+This file is part of GCC.
+
+GCC is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 3, or (at your option)
+any later version.
+
+GCC is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with GCC; see the file COPYING3.  If not see
+<http://www.gnu.org/licenses/>.  */
+
+
+/* This file is dependent upon the implementation of tree's. It provides an
+   abstract interface to the tree objects such that if all tree creation and
+   manipulations are done through this interface, we can easily change the
+   implementation of tree's, and not impact other code.  */
+
+#ifndef GCC_TREE_ITERATOR_H
+#define GCC_TREE_ITERATOR_H 1
+
+/* Iterator object for GENERIC or GIMPLE TREE statements.  */
+
+typedef struct {
+  struct tree_statement_list_node *ptr;
+  tree container;
+} tree_stmt_iterator;
+
+static inline tree_stmt_iterator
+tsi_start (tree t)
+{
+  tree_stmt_iterator i;
+
+  i.ptr = STATEMENT_LIST_HEAD (t);
+  i.container = t;
+
+  return i;
+}
+
+static inline tree_stmt_iterator
+tsi_last (tree t)
+{
+  tree_stmt_iterator i;
+
+  i.ptr = STATEMENT_LIST_TAIL (t);
+  i.container = t;
+
+  return i;
+}
+
+static inline bool
+tsi_end_p (tree_stmt_iterator i)
+{
+  return i.ptr == NULL;
+}
+
+static inline bool
+tsi_one_before_end_p (tree_stmt_iterator i)
+{
+  return i.ptr != NULL && i.ptr->next == NULL;
+}
+
+static inline void
+tsi_next (tree_stmt_iterator *i)
+{
+  i->ptr = i->ptr->next;
+}
+
+static inline void
+tsi_prev (tree_stmt_iterator *i)
+{
+  i->ptr = i->ptr->prev;
+}
+
+static inline tree *
+tsi_stmt_ptr (tree_stmt_iterator i)
+{
+  return &i.ptr->stmt;
+}
+
+static inline tree
+tsi_stmt (tree_stmt_iterator i)
+{
+  return i.ptr->stmt;
+}
+
+enum tsi_iterator_update
+{
+  TSI_NEW_STMT,		/* Only valid when single statement is added, move
+			   iterator to it.  */
+  TSI_SAME_STMT,	/* Leave the iterator at the same statement.  */
+  TSI_CHAIN_START,	/* Only valid when chain of statements is added, move
+			   iterator to the first statement in the chain.  */
+  TSI_CHAIN_END,	/* Only valid when chain of statements is added, move
+			   iterator to the last statement in the chain.  */
+  TSI_CONTINUE_LINKING	/* Move iterator to whatever position is suitable for
+			   linking other statements/chains of statements in
+			   the same direction.  */
+};
+
+extern void tsi_link_before (tree_stmt_iterator *, tree,
+			     enum tsi_iterator_update);
+extern void tsi_link_after (tree_stmt_iterator *, tree,
+			    enum tsi_iterator_update);
+
+extern void tsi_delink (tree_stmt_iterator *);
+
+extern tree alloc_stmt_list (void);
+extern void free_stmt_list (tree);
+extern void append_to_statement_list (tree, tree *);
+extern void append_to_statement_list_force (tree, tree *);
+
+#endif /* GCC_TREE_ITERATOR_H  */