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annotate gcc/gcse.h @ 132:d34655255c78

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update gcc-8.2
author mir3636
date Thu, 25 Oct 2018 10:21:07 +0900
parents 84e7813d76e9
children 1830386684a0
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Nobuyasu Oshiro <dimolto@cr.ie.u-ryukyu.ac.jp>
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1 /* Global common subexpression elimination/Partial redundancy elimination
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Nobuyasu Oshiro <dimolto@cr.ie.u-ryukyu.ac.jp>
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2 and global constant/copy propagation for GNU compiler.
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3 Copyright (C) 1997-2018 Free Software Foundation, Inc.
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Nobuyasu Oshiro <dimolto@cr.ie.u-ryukyu.ac.jp>
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5 This file is part of GCC.
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6
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7 GCC is free software; you can redistribute it and/or modify it under
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Nobuyasu Oshiro <dimolto@cr.ie.u-ryukyu.ac.jp>
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8 the terms of the GNU General Public License as published by the Free
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Nobuyasu Oshiro <dimolto@cr.ie.u-ryukyu.ac.jp>
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9 Software Foundation; either version 3, or (at your option) any later
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10 version.
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11
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12 GCC is distributed in the hope that it will be useful, but WITHOUT ANY
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13 WARRANTY; without even the implied warranty of MERCHANTABILITY or
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Nobuyasu Oshiro <dimolto@cr.ie.u-ryukyu.ac.jp>
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14 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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15 for more details.
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16
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17 You should have received a copy of the GNU General Public License
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Nobuyasu Oshiro <dimolto@cr.ie.u-ryukyu.ac.jp>
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18 along with GCC; see the file COPYING3. If not see
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19 <http://www.gnu.org/licenses/>. */
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20
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Nobuyasu Oshiro <dimolto@cr.ie.u-ryukyu.ac.jp>
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21 #ifndef GCC_GCSE_H
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22 #define GCC_GCSE_H
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23
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24 /* Target-dependent globals. */
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25 struct target_gcse {
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26 /* Nonzero for each mode that supports (set (reg) (reg)).
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27 This is trivially true for integer and floating point values.
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Nobuyasu Oshiro <dimolto@cr.ie.u-ryukyu.ac.jp>
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28 It may or may not be true for condition codes. */
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29 char x_can_copy[(int) NUM_MACHINE_MODES];
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30
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31 /* True if the previous field has been initialized. */
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32 bool x_can_copy_init_p;
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33 };
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34
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35 extern struct target_gcse default_target_gcse;
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36 #if SWITCHABLE_TARGET
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37 extern struct target_gcse *this_target_gcse;
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38 #else
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39 #define this_target_gcse (&default_target_gcse)
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40 #endif
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42 void gcse_c_finalize (void);
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43 extern bool gcse_or_cprop_is_too_expensive (const char *);
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44
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45 #endif