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111
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1 /* Gimple simplify definitions.
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2
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3 Copyright (C) 2011-2017 Free Software Foundation, Inc.
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4 Contributed by Richard Guenther <rguenther@suse.de>
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5
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6 This file is part of GCC.
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7
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8 GCC is free software; you can redistribute it and/or modify it under
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9 the terms of the GNU General Public License as published by the Free
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10 Software Foundation; either version 3, or (at your option) any later
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11 version.
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12
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13 GCC is distributed in the hope that it will be useful, but WITHOUT ANY
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14 WARRANTY; without even the implied warranty of MERCHANTABILITY or
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15 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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16 for more details.
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17
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18 You should have received a copy of the GNU General Public License
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19 along with GCC; see the file COPYING3. If not see
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20 <http://www.gnu.org/licenses/>. */
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21
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22 #ifndef GCC_GIMPLE_MATCH_H
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23 #define GCC_GIMPLE_MATCH_H
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24
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25
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26 /* Helper to transparently allow tree codes and builtin function codes
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27 exist in one storage entity. */
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28 class code_helper
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29 {
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30 public:
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31 code_helper () {}
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32 code_helper (tree_code code) : rep ((int) code) {}
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33 code_helper (combined_fn fn) : rep (-(int) fn) {}
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34 operator tree_code () const { return (tree_code) rep; }
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35 operator combined_fn () const { return (combined_fn) -rep; }
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36 bool is_tree_code () const { return rep > 0; }
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37 bool is_fn_code () const { return rep < 0; }
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38 int get_rep () const { return rep; }
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39 private:
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40 int rep;
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41 };
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42
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43 /* Return whether OPS[0] with CODE is a non-expression result and
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44 a gimple value. */
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45
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46 inline bool
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47 gimple_simplified_result_is_gimple_val (code_helper code, tree *ops)
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48 {
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49 return (code.is_tree_code ()
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50 && (TREE_CODE_LENGTH ((tree_code) code) == 0
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51 || ((tree_code) code) == ADDR_EXPR)
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52 && is_gimple_val (ops[0]));
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53 }
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54
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55 extern tree (*mprts_hook) (code_helper, tree, tree *);
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56
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57 bool gimple_simplify (gimple *, code_helper *, tree *, gimple_seq *,
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58 tree (*)(tree), tree (*)(tree));
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59 bool gimple_resimplify1 (gimple_seq *, code_helper *, tree, tree *,
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60 tree (*)(tree));
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61 bool gimple_resimplify2 (gimple_seq *, code_helper *, tree, tree *,
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62 tree (*)(tree));
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63 bool gimple_resimplify3 (gimple_seq *, code_helper *, tree, tree *,
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64 tree (*)(tree));
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65 tree maybe_push_res_to_seq (code_helper, tree, tree *,
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66 gimple_seq *, tree res = NULL_TREE);
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67 void maybe_build_generic_op (enum tree_code, tree, tree *);
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68
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69
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70 #endif /* GCC_GIMPLE_MATCH_H */
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