-/* profile.h - Defines data exported from profile.c to other passes.
- Copyright (C) 1998, 1999, 2000, 2001 Free Software Foundation, Inc.
+/* Header file for minimum-cost maximal flow routines used to smooth basic
+ block and edge frequency counts.
+ Copyright (C) 2008
+ Free Software Foundation, Inc.
+ Contributed by Paul Yuan (yingbo.com@gmail.com)
+ and Vinodha Ramasamy (vinodha@google.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 2, or (at your option) any later
+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
for more details.
You should have received a copy of the GNU General Public License
-along with GCC; see the file COPYING. If not, write to the Free
-Software Foundation, 59 Temple Place - Suite 330, Boston, MA
-02111-1307, USA. */
-
-#ifndef GCC_PROFILE_H
-#define GCC_PROFILE_H
+along with GCC; see the file COPYING3. If not see
+<http://www.gnu.org/licenses/>. */
-/* The number of different counter sections. */
-#define MAX_COUNTER_SECTIONS 1
+#ifndef PROFILE_H
+#define PROFILE_H
-/* Info about number of counters in the section. */
-struct section_info
+/* Additional information about edges. */
+struct edge_info
{
- unsigned tag; /* Section tag. */
- int present; /* Are the data from this section read into gcc? */
- int n_counters; /* Total number of counters. */
- int n_counters_now; /* Number of counters in the current function. */
-};
+ unsigned int count_valid:1;
-struct profile_info
- {
- /* Information about numbers of counters in counter sections, for
- allocating the storage and storing the sizes. */
- unsigned n_sections;
- struct section_info section_info[MAX_COUNTER_SECTIONS];
-
- /* Checksum of the cfg. Used for 'identification' of code.
- Used by final. */
+ /* Is on the spanning tree. */
+ unsigned int on_tree:1;
- unsigned current_function_cfg_checksum;
-
- /* Max. value of counter in program corresponding to the profile data
- for the current function. */
-
- gcov_type max_counter_in_program;
+ /* Pretend this edge does not exist (it is abnormal and we've
+ inserted a fake to compensate). */
+ unsigned int ignore:1;
+};
- /* The number of profiles merged to form the profile data for the current
- function. */
- int count_profiles_merged;
- };
+#define EDGE_INFO(e) ((struct edge_info *) (e)->aux)
-extern struct profile_info profile_info;
+/* Smoothes the initial assigned basic block and edge counts using
+ a minimum cost flow algorithm. */
+extern void mcf_smooth_cfg (void);
-struct section_info *find_counters_section PARAMS ((unsigned));
+extern gcov_type sum_edge_counts (VEC (edge, gc) *edges);
-#endif
+#endif /* PROFILE_H */
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