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1 /* Header file for SSA jump threading.
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2 Copyright (C) 2013-2020 Free Software Foundation, Inc.
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3
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4 This file is part of GCC.
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5
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6 GCC is free software; you can redistribute it and/or modify it under
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7 the terms of the GNU General Public License as published by the Free
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8 Software Foundation; either version 3, or (at your option) any later
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9 version.
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10
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11 GCC is distributed in the hope that it will be useful, but WITHOUT ANY
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12 WARRANTY; without even the implied warranty of MERCHANTABILITY or
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13 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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14 for more details.
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15
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16 You should have received a copy of the GNU General Public License
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17 along with GCC; see the file COPYING3. If not see
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18 <http://www.gnu.org/licenses/>. */
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19
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20 #ifndef GCC_TREE_SSA_THREADEDGE_H
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21 #define GCC_TREE_SSA_THREADEDGE_H
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22
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23 extern vec<tree> ssa_name_values;
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24 #define SSA_NAME_VALUE(x) \
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25 (SSA_NAME_VERSION (x) < ssa_name_values.length () \
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26 ? ssa_name_values[SSA_NAME_VERSION (x)] \
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27 : NULL_TREE)
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28 extern void set_ssa_name_value (tree, tree);
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29 extern void threadedge_initialize_values (void);
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30 extern void threadedge_finalize_values (void);
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31 extern bool potentially_threadable_block (basic_block);
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32 extern void propagate_threaded_block_debug_into (basic_block, basic_block);
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33 class evrp_range_analyzer;
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34 extern void thread_outgoing_edges (basic_block, gcond *,
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35 const_and_copies *,
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36 avail_exprs_stack *,
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37 evrp_range_analyzer *,
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38 tree (*) (gimple *, gimple *,
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39 avail_exprs_stack *, basic_block));
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40
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41 #endif /* GCC_TREE_SSA_THREADEDGE_H */
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