GCC Middle and Back End API Reference
profile.h
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1 /* Header file for minimum-cost maximal flow routines used to smooth basic
2  block and edge frequency counts.
3  Copyright (C) 2008-2013 Free Software Foundation, Inc.
4  Contributed by Paul Yuan (yingbo.com@gmail.com)
5  and Vinodha Ramasamy (vinodha@google.com).
6 
7 This file is part of GCC.
8 GCC is free software; you can redistribute it and/or modify it under
9 the terms of the GNU General Public License as published by the Free
10 Software Foundation; either version 3, or (at your option) any later
11 version.
12 
13 GCC is distributed in the hope that it will be useful, but WITHOUT ANY
14 WARRANTY; without even the implied warranty of MERCHANTABILITY or
15 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
16 for more details.
17 
18 You should have received a copy of the GNU General Public License
19 along with GCC; see the file COPYING3. If not see
20 <http://www.gnu.org/licenses/>. */
21 
22 #ifndef PROFILE_H
23 #define PROFILE_H
24 
25 /* Additional information about edges. */
26 struct edge_info
27 {
28  unsigned int count_valid:1;
29 
30  /* Is on the spanning tree. */
31  unsigned int on_tree:1;
32 
33  /* Pretend this edge does not exist (it is abnormal and we've
34  inserted a fake to compensate). */
35  unsigned int ignore:1;
36 };
37 
38 #define EDGE_INFO(e) ((struct edge_info *) (e)->aux)
39 
40 /* Smoothes the initial assigned basic block and edge counts using
41  a minimum cost flow algorithm. */
42 extern void mcf_smooth_cfg (void);
43 
44 extern gcov_type sum_edge_counts (vec<edge, va_gc> *edges);
45 
46 extern void init_node_map (bool);
47 extern void del_node_map (void);
48 
49 extern void get_working_sets (void);
50 
51 /* In predict.c. */
52 extern gcov_type get_hot_bb_threshold (void);
53 extern void set_hot_bb_threshold (gcov_type);
54 
55 #endif /* PROFILE_H */