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1 /* Shrink-wrapping related functions.
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2 Copyright (C) 1989-2020 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_SHRINK_WRAP_H
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21 #define GCC_SHRINK_WRAP_H
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22
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23 #include "function.h"
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24
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25 /* In shrink-wrap.c. */
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26 extern bool requires_stack_frame_p (rtx_insn *, HARD_REG_SET, HARD_REG_SET);
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27 extern void try_shrink_wrapping (edge *entry_edge, rtx_insn *prologue_seq);
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28 extern void try_shrink_wrapping_separate (basic_block first_bb);
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29 #define SHRINK_WRAPPING_ENABLED \
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30 (flag_shrink_wrap && targetm.have_simple_return ())
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31
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32 #endif /* GCC_SHRINK_WRAP_H */
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33
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34
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