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+/* Header file for any pass which requires SSA routines.
+ Copyright (C) 2013 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 3, or (at your option) any later
+version.
+
+GCC is distributed in the hope that it will be useful, but WITHOUT ANY
+WARRANTY; without even the implied warranty of MERCHANTABILITY or
+FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
+ 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
+<http://www.gnu.org/licenses/>. */
+
+#ifndef GCC_TREE_SSA_H
+#define GCC_TREE_SSA_H
+
+#include "tree-flow.h"
+
+/* Mapping for redirected edges. */
+struct _edge_var_map {
+ tree result; /* PHI result. */
+ tree def; /* PHI arg definition. */
+ source_location locus; /* PHI arg location. */
+};
+typedef struct _edge_var_map edge_var_map;
+
+/* A vector of var maps. */
+typedef vec<edge_var_map, va_heap, vl_embed> edge_var_map_vector;
+
+
+extern void redirect_edge_var_map_add (edge, tree, tree, source_location);
+extern void redirect_edge_var_map_clear (edge);
+extern void redirect_edge_var_map_dup (edge, edge);
+extern edge_var_map_vector *redirect_edge_var_map_vector (edge);
+extern void redirect_edge_var_map_destroy (void);
+extern edge ssa_redirect_edge (edge, basic_block);
+extern void flush_pending_stmts (edge);
+extern tree target_for_debug_bind (tree);
+extern void insert_debug_temp_for_var_def (gimple_stmt_iterator *, tree);
+extern void insert_debug_temps_for_defs (gimple_stmt_iterator *);
+extern void reset_debug_uses (gimple);
+extern void release_defs_bitset (bitmap toremove);
+extern void verify_ssa (bool);
+extern void init_tree_ssa (struct function *);
+extern void delete_tree_ssa (void);
+extern bool tree_ssa_useless_type_conversion (tree);
+extern tree tree_ssa_strip_useless_type_conversions (tree);
+
+/* Call-back function for walk_use_def_chains(). At each reaching
+ definition, a function with this prototype is called. */
+typedef bool (*walk_use_def_chains_fn) (tree, gimple, void *);
+extern void walk_use_def_chains (tree, walk_use_def_chains_fn, void *, bool);
+
+extern void warn_uninit (enum opt_code, tree, tree, tree, const char *, void *);
+extern unsigned int warn_uninitialized_vars (bool);
+extern void execute_update_addresses_taken (void);
+
+/* Given an edge_var_map V, return the PHI arg definition. */
+
+static inline tree
+redirect_edge_var_map_def (edge_var_map *v)
+{
+ return v->def;
+}
+
+/* Given an edge_var_map V, return the PHI result. */
+
+static inline tree
+redirect_edge_var_map_result (edge_var_map *v)
+{
+ return v->result;
+}
+
+/* Given an edge_var_map V, return the PHI arg location. */
+
+static inline source_location
+redirect_edge_var_map_location (edge_var_map *v)
+{
+ return v->locus;
+}
+
+
+#endif /* GCC_TREE_SSA_H */