| /* Header file for any pass which requires SSA routines. |
| Copyright (C) 2013-2019 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 |
| |
| /* Mapping for redirected edges. */ |
| struct edge_var_map { |
| tree result; /* PHI result. */ |
| tree def; /* PHI arg definition. */ |
| location_t 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, location_t); |
| 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 location_t |
| 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 */ |