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[/] [openrisc/] [trunk/] [gnu-src/] [gcc-4.5.1/] [gcc/] [graphds.h] - Blame information for rev 280

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1 280 jeremybenn
/* Graph representation.
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   Copyright (C) 2007, 2008
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   Free Software Foundation, Inc.
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This file is part of GCC.
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GCC is free software; you can redistribute it and/or modify it under
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the terms of the GNU General Public License as published by the Free
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Software Foundation; either version 3, or (at your option) any later
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version.
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GCC is distributed in the hope that it will be useful, but WITHOUT ANY
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WARRANTY; without even the implied warranty of MERCHANTABILITY or
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FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
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for more details.
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You should have received a copy of the GNU General Public License
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along with GCC; see the file COPYING3.  If not see
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<http://www.gnu.org/licenses/>.  */
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/* Structure representing edge of a graph.  */
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struct graph_edge
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{
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  int src, dest;        /* Source and destination.  */
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  struct graph_edge *pred_next, *succ_next;
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                        /* Next edge in predecessor and successor lists.  */
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  void *data;           /* Data attached to the edge.  */
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};
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/* Structure representing vertex of a graph.  */
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struct vertex
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{
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  struct graph_edge *pred, *succ;
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                        /* Lists of predecessors and successors.  */
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  int component;        /* Number of dfs restarts before reaching the
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                           vertex.  */
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  int post;             /* Postorder number.  */
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  void *data;           /* Data attached to the vertex.  */
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};
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/* Structure representing a graph.  */
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struct graph
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{
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  int n_vertices;       /* Number of vertices.  */
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  struct vertex *vertices;
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                        /* The vertices.  */
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  htab_t indices;       /* Fast lookup for indices.  */
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};
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struct graph *new_graph (int);
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void dump_graph (FILE *, struct graph *);
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struct graph_edge *add_edge (struct graph *, int, int);
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void identify_vertices (struct graph *, int, int);
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int graphds_dfs (struct graph *, int *, int,
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                 VEC (int, heap) **, bool, bitmap);
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int graphds_scc (struct graph *, bitmap);
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void graphds_domtree (struct graph *, int, int *, int *, int *);
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typedef void (*graphds_edge_callback) (struct graph *, struct graph_edge *);
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void for_each_edge (struct graph *, graphds_edge_callback);
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void free_graph (struct graph *g);

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