/* Basic block reordering routines for the GNU compiler. Copyright (C) 2000 Free Software Foundation, Inc. This file is part of GCC. GCC is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2, or (at your option) any later version. GCC is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with GCC; see the file COPYING. If not, write to the Free Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ /* Structure to hold information about the blocks during reordering. */ typedef struct reorder_block_def { rtx header; rtx footer; basic_block next; basic_block original; /* These fields are used by bb-reorder pass. */ int visited; } *reorder_block_def; #define RBI(BB) ((reorder_block_def) (BB)->aux) extern void cfg_layout_initialize PARAMS ((void)); extern void cfg_layout_finalize PARAMS ((void)); extern bool cfg_layout_can_duplicate_bb_p PARAMS ((basic_block)); extern basic_block cfg_layout_duplicate_bb PARAMS ((basic_block, edge)); extern void scope_to_insns_initialize PARAMS ((void)); extern void scope_to_insns_finalize PARAMS ((void)); extern void cfg_layout_redirect_edge PARAMS ((edge, basic_block));