1/* Support routines for dead store elimination. 2 Copyright (C) 2019-2020 Free Software Foundation, Inc. 3 4This file is part of GCC. 5 6GCC is free software; you can redistribute it and/or modify 7it under the terms of the GNU General Public License as published by 8the Free Software Foundation; either version 3, or (at your option) 9any later version. 10 11GCC is distributed in the hope that it will be useful, 12but WITHOUT ANY WARRANTY; without even the implied warranty of 13MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 14GNU General Public License for more details. 15 16You should have received a copy of the GNU General Public License 17along with GCC; see the file COPYING3. If not see 18<http://www.gnu.org/licenses/>. */ 19 20#ifndef GCC_TREE_SSA_DSE_H 21#define GCC_TREE_SSA_DSE_H 22 23/* Return value from dse_classify_store */ 24enum dse_store_status 25{ 26 DSE_STORE_LIVE, 27 DSE_STORE_MAYBE_PARTIAL_DEAD, 28 DSE_STORE_DEAD 29}; 30 31dse_store_status dse_classify_store (ao_ref *, gimple *, bool, sbitmap, 32 bool * = NULL, tree = NULL); 33 34void delete_dead_or_redundant_assignment (gimple_stmt_iterator *, const char *, 35 bitmap = NULL); 36 37#endif /* GCC_TREE_SSA_DSE_H */ 38