gcc/gimple-match.h

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