1  /* Support routines for dead store elimination. 
       2     Copyright (C) 2019-2023 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, bitmap = NULL);
      36  
      37  #endif   /* GCC_TREE_SSA_DSE_H  */