/* Graph representation.
- Copyright (C) 2007
- Free Software Foundation, Inc.
+ Copyright (C) 2007-2020 Free Software Foundation, Inc.
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, 51 Franklin Street, Fifth Floor, Boston, MA
-02110-1301, USA. */
+along with GCC; see the file COPYING3. If not see
+<http://www.gnu.org/licenses/>. */
+
+#ifndef GCC_GRAPHDS_H
+#define GCC_GRAPHDS_H
/* Structure representing edge of a graph. */
struct graph
{
- int n_vertices; /* Number of vertices. */
- struct vertex *vertices;
- /* The vertices. */
+ int n_vertices; /* Number of vertices. */
+ struct vertex *vertices; /* The vertices. */
+ struct obstack ob; /* Obstack for vertex and edge allocation. */
};
struct graph *new_graph (int);
void dump_graph (FILE *, struct graph *);
struct graph_edge *add_edge (struct graph *, int, int);
void identify_vertices (struct graph *, int, int);
+typedef bool (*skip_edge_callback) (struct graph_edge *);
int graphds_dfs (struct graph *, int *, int,
- VEC (int, heap) **, bool, bitmap);
-int graphds_scc (struct graph *, bitmap);
+ vec<int> *, bool, bitmap, skip_edge_callback = NULL);
+int graphds_scc (struct graph *, bitmap, skip_edge_callback = NULL);
void graphds_domtree (struct graph *, int, int *, int *, int *);
-typedef void (*graphds_edge_callback) (struct graph *, struct graph_edge *);
-void for_each_edge (struct graph *, graphds_edge_callback);
+typedef void (*graphds_edge_callback) (struct graph *,
+ struct graph_edge *, void *);
+void for_each_edge (struct graph *, graphds_edge_callback, void *);
void free_graph (struct graph *g);
+
+#endif /* GCC_GRAPHDS_H */