gcc/
[official-gcc.git] / gcc / tree-ssa-threadupdate.h
blob426aca5e68808aa98cacb6cab0e49eea233be1a2
1 /* Communication between registering jump thread requests and
2 updating the SSA/CFG for jump threading.
3 Copyright (C) 2013-2014 Free Software Foundation, Inc.
5 This file is part of GCC.
7 GCC is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 3, or (at your option)
10 any later version.
12 GCC is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with GCC; see the file COPYING3. If not see
19 <http://www.gnu.org/licenses/>. */
21 #ifndef _TREE_SSA_THREADUPDATE_H
22 #define _TREE_SSA_THREADUPDATE_H 1
24 /* In tree-ssa-threadupdate.c. */
25 extern bool thread_through_all_blocks (bool);
26 enum jump_thread_edge_type
28 EDGE_START_JUMP_THREAD,
29 EDGE_COPY_SRC_BLOCK,
30 EDGE_COPY_SRC_JOINER_BLOCK,
31 EDGE_NO_COPY_SRC_BLOCK
34 class jump_thread_edge
36 public:
37 jump_thread_edge (edge e, enum jump_thread_edge_type type)
38 : e (e), type (type) {}
40 edge e;
41 enum jump_thread_edge_type type;
44 extern void register_jump_thread (vec <class jump_thread_edge *> *);
45 extern void delete_jump_thread_path (vec <class jump_thread_edge *> *);
46 #endif