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/* Header file for any pass which requires SSA routines.
Copyright (C) 2013-2018 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
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 GCC_TREE_SSA_H
#define GCC_TREE_SSA_H
/* Mapping for redirected edges. */
struct edge_var_map {
tree result; /* PHI result. */
tree def; /* PHI arg definition. */
source_location locus; /* PHI arg location. */
/* 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 vec<edge_var_map> *redirect_edge_var_map_vector (edge);
extern void redirect_edge_var_map_empty (void);
extern edge ssa_redirect_edge (edge, basic_block);
extern void flush_pending_stmts (edge);
extern void gimple_replace_ssa_lhs (gimple *, tree);
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, bool);
extern void init_tree_ssa (function *);
extern void delete_tree_ssa (function *);
extern bool tree_ssa_useless_type_conversion (tree);
extern tree tree_ssa_strip_useless_type_conversions (tree);
extern bool ssa_defined_default_def_p (tree t);
extern bool ssa_undefined_value_p (tree, bool = true);
extern bool gimple_uses_undefined_value_p (gimple *);
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;
/* Verify SSA invariants, if internal consistency checks are enabled. */
static inline void
checking_verify_ssa (bool check_modified_stmt, bool check_ssa_operands)
if (flag_checking)
verify_ssa (check_modified_stmt, check_ssa_operands);
#endif /* GCC_TREE_SSA_H */