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5254eac4 JL |
1 | /* Communication between registering jump thread requests and |
2 | updating the SSA/CFG for jump threading. | |
3 | Copyright (C) 2013 Free Software Foundation, Inc. | |
4 | ||
5 | This file is part of GCC. | |
6 | ||
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. | |
11 | ||
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. | |
16 | ||
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/>. */ | |
20 | ||
21 | #ifndef _TREE_SSA_THREADUPDATE_H | |
22 | #define _TREE_SSA_THREADUPDATE_H 1 | |
23 | ||
24 | /* In tree-ssa-threadupdate.c. */ | |
25 | extern bool thread_through_all_blocks (bool); | |
26 | enum jump_thread_edge_type | |
27 | { | |
28 | EDGE_START_JUMP_THREAD, | |
29 | EDGE_COPY_SRC_BLOCK, | |
30 | EDGE_COPY_SRC_JOINER_BLOCK, | |
31 | EDGE_NO_COPY_SRC_BLOCK | |
32 | }; | |
33 | ||
34 | class jump_thread_edge | |
35 | { | |
36 | public: | |
37 | jump_thread_edge (edge e, enum jump_thread_edge_type type) | |
38 | : e (e), type (type) {} | |
39 | ||
40 | edge e; | |
41 | enum jump_thread_edge_type type; | |
42 | }; | |
43 | ||
44 | extern void register_jump_thread (vec<class jump_thread_edge *>); | |
45 | #endif |