1 /* Header file for any pass which requires SSA routines. 2 Copyright (C) 2013-2015 Free Software Foundation, Inc. 3 4 This file is part of GCC. 5 6 GCC is free software; you can redistribute it and/or modify it under 7 the terms of the GNU General Public License as published by the Free 8 Software Foundation; either version 3, or (at your option) any later 9 version. 10 11 GCC is distributed in the hope that it will be useful, but WITHOUT ANY 12 WARRANTY; without even the implied warranty of MERCHANTABILITY or 13 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 14 for more details. 15 16 You should have received a copy of the GNU General Public License 17 along with GCC; see the file COPYING3. If not see 18 <http://www.gnu.org/licenses/>. */ 19 20 #ifndef GCC_TREE_SSA_H 21 #define GCC_TREE_SSA_H 22 23 /* Mapping for redirected edges. */ 24 struct _edge_var_map { 25 tree result; /* PHI result. */ 26 tree def; /* PHI arg definition. */ 27 source_location locus; /* PHI arg location. */ 28 }; 29 typedef struct _edge_var_map edge_var_map; 30 31 /* A vector of var maps. */ 32 typedef vec<edge_var_map, va_heap, vl_embed> edge_var_map_vector; 33 34 35 extern void redirect_edge_var_map_add (edge, tree, tree, source_location); 36 extern void redirect_edge_var_map_clear (edge); 37 extern void redirect_edge_var_map_dup (edge, edge); 38 extern vec<edge_var_map> *redirect_edge_var_map_vector (edge); 39 extern void redirect_edge_var_map_destroy (void); 40 extern edge ssa_redirect_edge (edge, basic_block); 41 extern void flush_pending_stmts (edge); 42 extern void gimple_replace_ssa_lhs (gimple, tree); 43 extern tree target_for_debug_bind (tree); 44 extern void insert_debug_temp_for_var_def (gimple_stmt_iterator *, tree); 45 extern void insert_debug_temps_for_defs (gimple_stmt_iterator *); 46 extern void reset_debug_uses (gimple); 47 extern void release_defs_bitset (bitmap toremove); 48 extern void verify_ssa (bool, bool); 49 extern void init_tree_ssa (struct function *); 50 extern void delete_tree_ssa (void); 51 extern bool tree_ssa_useless_type_conversion (tree); 52 extern tree tree_ssa_strip_useless_type_conversions (tree); 53 54 extern bool ssa_undefined_value_p (tree, bool = true); 55 extern void execute_update_addresses_taken (void); 56 57 /* Given an edge_var_map V, return the PHI arg definition. */ 58 59 static inline tree 60 redirect_edge_var_map_def (edge_var_map *v) 61 { 62 return v->def; 63 } 64 65 /* Given an edge_var_map V, return the PHI result. */ 66 67 static inline tree 68 redirect_edge_var_map_result (edge_var_map *v) 69 { 70 return v->result; 71 } 72 73 /* Given an edge_var_map V, return the PHI arg location. */ 74 75 static inline source_location 76 redirect_edge_var_map_location (edge_var_map *v) 77 { 78 return v->locus; 79 } 80 81 82 #endif /* GCC_TREE_SSA_H */ 83