2002-02-01 18:16:02 +00:00
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/* Basic block reordering routines for the GNU compiler.
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2004-07-28 03:11:36 +00:00
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Copyright (C) 2000, 2003 Free Software Foundation, Inc.
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2002-02-01 18:16:02 +00:00
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This file is part of GCC.
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GCC is free software; you can redistribute it and/or modify it
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under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2, or (at your option)
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any later version.
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GCC is distributed in the hope that it will be useful, but WITHOUT
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ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
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or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public
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License for more details.
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You should have received a copy of the GNU General Public License
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along with GCC; see the file COPYING. If not, write to the Free
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Software Foundation, 59 Temple Place - Suite 330, Boston, MA
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02111-1307, USA. */
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/* Structure to hold information about the blocks during reordering. */
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typedef struct reorder_block_def
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{
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2003-07-11 03:40:53 +00:00
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rtx header;
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rtx footer;
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2002-02-01 18:16:02 +00:00
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basic_block next;
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2003-07-11 03:40:53 +00:00
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basic_block original;
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2004-07-28 03:11:36 +00:00
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/* Used by loop copying. */
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basic_block copy;
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int duplicated;
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2003-07-11 03:40:53 +00:00
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/* These fields are used by bb-reorder pass. */
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2002-02-01 18:16:02 +00:00
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int visited;
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} *reorder_block_def;
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2004-07-28 03:11:36 +00:00
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extern rtx cfg_layout_function_footer;
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extern void cfg_layout_initialize (unsigned int);
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extern void cfg_layout_finalize (void);
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extern bool cfg_layout_can_duplicate_bb_p (basic_block);
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extern basic_block cfg_layout_duplicate_bb (basic_block, edge);
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extern void insn_locators_initialize (void);
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extern void reemit_insn_block_notes (void);
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extern bool can_copy_bbs_p (basic_block *, unsigned);
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extern void copy_bbs (basic_block *, unsigned, basic_block *,
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edge *, unsigned, edge *, struct loop *);
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extern void cfg_layout_initialize_rbi (basic_block);
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