/* Hooks for cfg representation specific functions.
- Copyright (C) 2003, 2004 Free Software Foundation, Inc.
+ Copyright (C) 2003, 2004, 2005, 2006, 2007, 2008
+ 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)
+the Free Software Foundation; either version 3, or (at your option)
any later version.
GCC is distributed in the hope that it will be useful,
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. */
+along with GCC; see the file COPYING3. If not see
+<http://www.gnu.org/licenses/>. */
#ifndef GCC_CFGHOOKS_H
#define GCC_CFGHOOKS_H
/* Debugging. */
int (*verify_flow_info) (void);
- void (*dump_bb) (basic_block, FILE *, int);
+ void (*dump_bb) (basic_block, FILE *, int, int);
/* Basic CFG manipulation. */
edge (*redirect_edge_and_branch) (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. */
+ newly created forwarder basic block is returned. The edge must
+ not be abnormal. */
basic_block (*redirect_edge_and_branch_force) (edge, basic_block);
+ /* Returns true if it is possible to remove the edge by redirecting it
+ to the destination of the other edge going from its source. */
+ bool (*can_remove_branch_p) (const_edge);
+
/* Remove statements corresponding to a given basic block. */
void (*delete_basic_block) (basic_block);
/* Return true if the one of outgoing edges is already predicted by
PREDICTOR. */
- bool (*predicted_by_p) (basic_block bb, enum br_predictor predictor);
+ bool (*predicted_by_p) (const_basic_block bb, enum br_predictor predictor);
/* Return true when block A can be duplicated. */
- bool (*can_duplicate_block_p) (basic_block a);
+ bool (*can_duplicate_block_p) (const_basic_block a);
/* Duplicate block A. */
basic_block (*duplicate_block) (basic_block a);
/* Say whether a block ends with a conditional branch. Switches
and unconditional branches do not qualify. */
- bool (*block_ends_with_condjump_p) (basic_block);
+ bool (*block_ends_with_condjump_p) (const_basic_block);
/* Add fake edges to the function exit for any non constant and non noreturn
calls, volatile inline assembly in the bitmap of blocks specified by
The goal is to expose cases in which entering a basic block does not imply
that all subsequent instructions must be executed. */
int (*flow_call_edges_add) (sbitmap);
+
+ /* This function is called immediately after edge E is added to the
+ edge vector E->dest->preds. */
+ void (*execute_on_growing_pred) (edge);
+
+ /* This function is called immediately before edge E is removed from
+ the edge vector E->dest->preds. */
+ void (*execute_on_shrinking_pred) (edge);
+
+ /* A hook for duplicating loop in CFG, currently this is used
+ in loop versioning. */
+ bool (*cfg_hook_duplicate_loop_to_header_edge) (struct loop *, edge,
+ unsigned, sbitmap,
+ edge, VEC (edge, heap) **,
+ int);
+
+ /* Add condition to new basic block and update CFG used in loop
+ versioning. */
+ void (*lv_add_condition_to_bb) (basic_block, basic_block, basic_block,
+ void *);
+ /* Update the PHI nodes in case of loop versioning. */
+ void (*lv_adjust_loop_header_phi) (basic_block, basic_block,
+ basic_block, edge);
+
+ /* Given a condition BB extract the true/false taken/not taken edges
+ (depending if we are on tree's or RTL). */
+ void (*extract_cond_bb_edges) (basic_block, edge *, edge *);
+
+
+ /* Add PHI arguments queued in PENDINT_STMT list on edge E to edge
+ E->dest (only in tree-ssa loop versioning. */
+ void (*flush_pending_stmts) (edge);
};
extern void verify_flow_info (void);
extern void dump_bb (basic_block, FILE *, int);
extern edge redirect_edge_and_branch (edge, basic_block);
extern basic_block redirect_edge_and_branch_force (edge, basic_block);
+extern bool can_remove_branch_p (const_edge);
+extern void remove_branch (edge);
+extern void remove_edge (edge);
extern edge split_block (basic_block, void *);
extern edge split_block_after_labels (basic_block);
extern bool move_block_after (basic_block, basic_block);
extern void tidy_fallthru_edge (edge);
extern void tidy_fallthru_edges (void);
extern void predict_edge (edge e, enum br_predictor predictor, int probability);
-extern bool predicted_by_p (basic_block bb, enum br_predictor predictor);
-extern bool can_duplicate_block_p (basic_block);
-extern basic_block duplicate_block (basic_block, edge);
+extern bool predicted_by_p (const_basic_block bb, enum br_predictor predictor);
+extern bool can_duplicate_block_p (const_basic_block);
+extern basic_block duplicate_block (basic_block, edge, basic_block);
extern bool block_ends_with_call_p (basic_block bb);
-extern bool block_ends_with_condjump_p (basic_block bb);
+extern bool block_ends_with_condjump_p (const_basic_block bb);
extern int flow_call_edges_add (sbitmap);
+extern void execute_on_growing_pred (edge);
+extern void execute_on_shrinking_pred (edge);
+extern bool cfg_hook_duplicate_loop_to_header_edge (struct loop *loop, edge,
+ unsigned int ndupl,
+ sbitmap wont_exit,
+ edge orig,
+ VEC (edge, heap) **to_remove,
+ int flags);
+
+extern void lv_flush_pending_stmts (edge);
+extern void extract_cond_bb_edges (basic_block, edge *, edge*);
+extern void lv_adjust_loop_header_phi (basic_block, basic_block, basic_block,
+ edge);
+extern void lv_add_condition_to_bb (basic_block, basic_block, basic_block,
+ void *);
/* Hooks containers. */
-extern struct cfg_hooks tree_cfg_hooks;
+extern struct cfg_hooks gimple_cfg_hooks;
extern struct cfg_hooks rtl_cfg_hooks;
extern struct cfg_hooks cfg_layout_rtl_cfg_hooks;
/* Declarations. */
-extern int ir_type (void);
+extern enum ir_type current_ir_type (void);
extern void rtl_register_cfg_hooks (void);
extern void cfg_layout_rtl_register_cfg_hooks (void);
-extern void tree_register_cfg_hooks (void);
+extern void gimple_register_cfg_hooks (void);
+extern struct cfg_hooks get_cfg_hooks (void);
+extern void set_cfg_hooks (struct cfg_hooks);
#endif /* GCC_CFGHOOKS_H */
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