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/* Header file for minimum-cost maximal flow routines used to smooth basic
block and edge frequency counts.
Copyright (C) 2008-2018 Free Software Foundation, Inc.
Contributed by Paul Yuan (
and Vinodha Ramasamy (
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
GCC is distributed in the hope that it will be useful, but WITHOUT ANY
WARRANTY; without even the implied warranty of MERCHANTABILITY or
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
<>. */
#ifndef PROFILE_H
#define PROFILE_H
/* Additional information about edges. */
struct edge_profile_info
unsigned int count_valid:1;
/* Is on the spanning tree. */
unsigned int on_tree:1;
/* Pretend this edge does not exist (it is abnormal and we've
inserted a fake to compensate). */
unsigned int ignore:1;
#define EDGE_INFO(e) ((struct edge_profile_info *) (e)->aux)
/* Helpers annotating edges/basic blocks to GCOV counts. */
extern vec<gcov_type> bb_gcov_counts;
extern hash_map<edge,gcov_type> *edge_gcov_counts;
inline gcov_type &
edge_gcov_count (edge e)
bool existed;
gcov_type &c = edge_gcov_counts->get_or_insert (e, &existed);
if (!existed)
c = 0;
return c;
inline gcov_type &
bb_gcov_count (basic_block bb)
return bb_gcov_counts[bb->index];
typedef struct gcov_working_set_info gcov_working_set_t;
extern gcov_working_set_t *find_working_set (unsigned pct_times_10);
extern void add_working_set (gcov_working_set_t *);
/* Smoothes the initial assigned basic block and edge counts using
a minimum cost flow algorithm. */
extern void mcf_smooth_cfg (void);
extern gcov_type sum_edge_counts (vec<edge, va_gc> *edges);
extern void init_node_map (bool);
extern void del_node_map (void);
extern void get_working_sets (void);
/* Counter summary from the last set of coverage counts read by
profile.c. */
extern const struct gcov_ctr_summary *profile_info;
#endif /* PROFILE_H */