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Diffstat (limited to 'gcc/cfghooks.h')
| -rw-r--r-- | gcc/cfghooks.h | 70 |
1 files changed, 70 insertions, 0 deletions
diff --git a/gcc/cfghooks.h b/gcc/cfghooks.h new file mode 100644 index 00000000000..c214b64cdc0 --- /dev/null +++ b/gcc/cfghooks.h @@ -0,0 +1,70 @@ +/* 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! */ + void (*cfgh_verify_flow_info) PARAMS ((void)); + + /* 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 */ |