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/* Hooks for cfg representation specific functions.
Copyright (C) 2003 Free Software Foundation, Inc.
Contributed by Sebastian Pop <s.pop@laposte.net>
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. */
#ifndef GCC_CFGHOOKS_H
#define GCC_CFGHOOKS_H
struct cfg_hooks
{
/* Debugging. Do not use macros to hook these so they can be called from
debugger! */
int (*cfgh_verify_flow_info) PARAMS ((void));
void (*dump_bb) PARAMS ((basic_block, FILE *));
/* Basic CFG manipulation. */
/* Redirect edge E to the given basic block B and update underlying program
representation. Returns false when edge is not easilly redirectable for
whatever reason. */
bool (*redirect_edge_and_branch) PARAMS ((edge e, basic_block b));
/* Same as the above but allows redirecting of fallthru edges. In that case
newly created forwarder basic block is returned. It aborts when called
on abnormal edge. */
basic_block (*redirect_edge_and_branch_force)PARAMS ((edge, basic_block));
/* Remove given basic block and all edges possibly pointing into it. */
void (*delete_block)PARAMS ((basic_block));
/* Split basic block B after specified instruction I. */
edge (*split_block) PARAMS ((basic_block b, void * i));
/* Higher level functions representable by primitive operations above if
we didn't have some oddities in RTL and Tree representations. */
basic_block (*cfgh_split_edge) PARAMS ((edge));
};
#define redirect_edge_and_branch(e,b) cfg_hooks->redirect_edge_and_branch (e,b)
#define redirect_edge_and_branch_force(e,b) cfg_hooks->redirect_edge_and_branch_force (e,b)
#define split_block(e,i) cfg_hooks->split_block (e,i)
#define delete_block(b) cfg_hooks->delete_block (b)
#define split_edge(e) cfg_hooks->cfgh_split_edge (e)
/* Hooks containers. */
extern struct cfg_hooks rtl_cfg_hooks;
/* A pointer to one of the hooks containers. */
extern struct cfg_hooks *cfg_hooks;
/* Declarations. */
extern void rtl_register_cfg_hooks PARAMS ((void));
extern void cfg_layout_rtl_register_cfg_hooks PARAMS ((void));
#endif /* GCC_CFGHOOKS_H */
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