Initial checkin of GCC 4.9.0 from trunk (r208799).

Change-Id: I48a3c08bb98542aa215912a75f03c0890e497dba

1 files changed, 46 insertions, 0 deletions

diff --git a/gcc-4.9/gcc/tree-ssa-threadupdate.h b/gcc-4.9/gcc/tree-ssa-threadupdate.h
new file mode 100644
index 000000000..426aca5e6
--- /dev/null
+++ b/gcc-4.9/gcc/tree-ssa-threadupdate.h
@@ -0,0 +1,46 @@
+/* Communication between registering jump thread requests and
+   updating the SSA/CFG for jump threading.
+   Copyright (C) 2013-2014 Free Software Foundation, Inc.
+
+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/>.  */
+
+#ifndef _TREE_SSA_THREADUPDATE_H
+#define _TREE_SSA_THREADUPDATE_H 1
+
+/* In tree-ssa-threadupdate.c.  */
+extern bool thread_through_all_blocks (bool);
+enum jump_thread_edge_type
+{
+  EDGE_START_JUMP_THREAD,
+  EDGE_COPY_SRC_BLOCK,
+  EDGE_COPY_SRC_JOINER_BLOCK,
+  EDGE_NO_COPY_SRC_BLOCK
+};
+
+class jump_thread_edge
+{
+public:
+  jump_thread_edge (edge e, enum jump_thread_edge_type type)
+    : e (e), type (type) {}
+
+  edge e;
+  enum jump_thread_edge_type type;
+};
+
+extern void register_jump_thread (vec <class jump_thread_edge *> *);
+extern void delete_jump_thread_path (vec <class jump_thread_edge *> *);
+#endif