| 1 | /* Basic block reordering routines for the GNU compiler.
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| 2 | Copyright (C) 2000 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
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| 7 | under the terms of the GNU General Public License as published by
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| 8 | the Free Software Foundation; either version 2, or (at your option)
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| 9 | any later version.
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| 10 |
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| 11 | GCC is distributed in the hope that it will be useful, but WITHOUT
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| 12 | ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
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| 13 | or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public
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| 14 | License 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 COPYING. If not, write to the Free
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| 18 | Software Foundation, 59 Temple Place - Suite 330, Boston, MA
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| 19 | 02111-1307, USA. */
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| 20 |
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| 21 | /* Structure to hold information about the blocks during reordering. */
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| 22 | typedef struct reorder_block_def
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| 23 | {
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| 24 | rtx header;
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| 25 | rtx footer;
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| 26 | basic_block next;
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| 27 | basic_block original;
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| 28 |
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| 29 | /* These fields are used by bb-reorder pass. */
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| 30 | int visited;
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| 31 | } *reorder_block_def;
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| 32 |
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| 33 | #define RBI(BB) ((reorder_block_def) (BB)->aux)
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| 34 |
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| 35 | extern void cfg_layout_initialize PARAMS ((void));
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| 36 | extern void cfg_layout_finalize PARAMS ((void));
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| 37 | extern bool cfg_layout_can_duplicate_bb_p PARAMS ((basic_block));
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| 38 | extern basic_block cfg_layout_duplicate_bb PARAMS ((basic_block, edge));
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| 39 | extern void scope_to_insns_initialize PARAMS ((void));
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| 40 | extern void scope_to_insns_finalize PARAMS ((void));
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| 41 | extern void cfg_layout_redirect_edge PARAMS ((edge, basic_block));
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