/* Hooks for cfg representation specific functions.
- Copyright (C) 2003, 2004, 2005, 2006, 2007, 2008
- Free Software Foundation, Inc.
+ Copyright (C) 2003-2014 Free Software Foundation, Inc.
Contributed by Sebastian Pop <s.pop@laposte.net>
This file is part of GCC.
along with GCC; see the file COPYING3. If not see
<http://www.gnu.org/licenses/>. */
+#ifndef GCC_CFGHOOKS_H
+#define GCC_CFGHOOKS_H
+
/* Only basic-block.h includes this. */
+/* Structure to gather statistic about profile consistency, per pass.
+ An array of this structure, indexed by pass static number, is allocated
+ in passes.c. The structure is defined here so that different CFG modes
+ can do their book-keeping via CFG hooks.
+
+ For every field[2], field[0] is the count before the pass runs, and
+ field[1] is the post-pass count. This allows us to monitor the effect
+ of each individual pass on the profile consistency.
+
+ This structure is not supposed to be used by anything other than passes.c
+ and one CFG hook per CFG mode. */
+struct profile_record
+{
+ /* The number of basic blocks where sum(freq) of the block's predecessors
+ doesn't match reasonably well with the incoming frequency. */
+ int num_mismatched_freq_in[2];
+ /* Likewise for a basic block's successors. */
+ int num_mismatched_freq_out[2];
+ /* The number of basic blocks where sum(count) of the block's predecessors
+ doesn't match reasonably well with the incoming frequency. */
+ int num_mismatched_count_in[2];
+ /* Likewise for a basic block's successors. */
+ int num_mismatched_count_out[2];
+ /* A weighted cost of the run-time of the function body. */
+ gcov_type time[2];
+ /* A weighted cost of the size of the function body. */
+ int size[2];
+ /* True iff this pass actually was run. */
+ bool run;
+};
+
+
struct cfg_hooks
{
/* Name of the corresponding ir. */
extern void verify_flow_info (void);
extern void dump_bb (FILE *, basic_block, int, int);
extern void dump_bb_for_graph (pretty_printer *, basic_block);
+extern void dump_flow_info (FILE *, int);
extern edge redirect_edge_and_branch (edge, basic_block);
extern basic_block redirect_edge_and_branch_force (edge, basic_block);
+extern edge redirect_edge_succ_nodup (edge, basic_block);
extern bool can_remove_branch_p (const_edge);
extern void remove_branch (edge);
extern void remove_edge (edge);
extern bool can_copy_bbs_p (basic_block *, unsigned);
extern void copy_bbs (basic_block *, unsigned, basic_block *,
edge *, unsigned, edge *, struct loop *,
- basic_block);
+ basic_block, bool);
void account_profile_record (struct profile_record *, int);
-extern void cfg_layout_initialize (unsigned int);
-extern void cfg_layout_finalize (void);
-
/* Hooks containers. */
extern struct cfg_hooks gimple_cfg_hooks;
extern struct cfg_hooks rtl_cfg_hooks;
extern struct cfg_hooks get_cfg_hooks (void);
extern void set_cfg_hooks (struct cfg_hooks);
+#endif /* GCC_CFGHOOKS_H */