1 /* Support routines for dead store elimination. 2 Copyright (C) 2019-2021 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 7 it under the terms of the GNU General Public License as published by 8 the Free Software Foundation; either version 3, or (at your option) 9 any later version. 10 11 GCC is distributed in the hope that it will be useful, 12 but WITHOUT ANY WARRANTY; without even the implied warranty of 13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 14 GNU General Public License 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_DSE_H 21 #define GCC_TREE_SSA_DSE_H 22 23 /* Return value from dse_classify_store */ 24 enum dse_store_status 25 { 26 DSE_STORE_LIVE, 27 DSE_STORE_MAYBE_PARTIAL_DEAD, 28 DSE_STORE_DEAD 29 }; 30 31 dse_store_status dse_classify_store (ao_ref *, gimple *, bool, sbitmap, 32 bool * = NULL, tree = NULL); 33 34 void delete_dead_or_redundant_assignment (gimple_stmt_iterator *, const char *, 35 bitmap = NULL); 36 37 #endif /* GCC_TREE_SSA_DSE_H */ 38