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/* Data and Control Flow Analysis for Trees.
Copyright (C) 2001-2013 Free Software Foundation, Inc.
Contributed by Diego Novillo <dnovillo@redhat.com>
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 3, 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 COPYING3. If not see
<http://www.gnu.org/licenses/>. */
#ifndef _TREE_FLOW_H
#define _TREE_FLOW_H 1
#include "bitmap.h"
#include "sbitmap.h"
#include "basic-block.h"
#include "hashtab.h"
#include "gimple.h"
#include "tree-ssa-operands.h"
#include "cgraph.h"
#include "ipa-reference.h"
#include "tree-ssa-alias.h"
#include "tree-cfgcleanup.h"
#include "tree-dfa.h"
#include "tree-pretty-print.h"
#include "gimple-low.h"
#include "tree-into-ssa.h"
#include "tree-ssa-loop.h"
/*---------------------------------------------------------------------------
OpenMP Region Tree
---------------------------------------------------------------------------*/
/* Parallel region information. Every parallel and workshare
directive is enclosed between two markers, the OMP_* directive
and a corresponding OMP_RETURN statement. */
struct omp_region
{
/* The enclosing region. */
struct omp_region *outer;
/* First child region. */
struct omp_region *inner;
/* Next peer region. */
struct omp_region *next;
/* Block containing the omp directive as its last stmt. */
basic_block entry;
/* Block containing the OMP_RETURN as its last stmt. */
basic_block exit;
/* Block containing the OMP_CONTINUE as its last stmt. */
basic_block cont;
/* If this is a combined parallel+workshare region, this is a list
of additional arguments needed by the combined parallel+workshare
library call. */
vec<tree, va_gc> *ws_args;
/* The code for the omp directive of this region. */
enum gimple_code type;
/* Schedule kind, only used for OMP_FOR type regions. */
enum omp_clause_schedule_kind sched_kind;
/* True if this is a combined parallel+workshare region. */
bool is_combined_parallel;
};
extern struct omp_region *root_omp_region;
extern struct omp_region *new_omp_region (basic_block, enum gimple_code,
struct omp_region *);
extern void free_omp_regions (void);
void omp_expand_local (basic_block);
tree copy_var_decl (tree, tree, tree);
/* Location to track pending stmt for edge insertion. */
#define PENDING_STMT(e) ((e)->insns.g)
extern void init_empty_tree_cfg_for_function (struct function *);
extern void init_empty_tree_cfg (void);
extern void fold_cond_expr_cond (void);
extern void start_recording_case_labels (void);
extern void end_recording_case_labels (void);
extern basic_block label_to_block_fn (struct function *, tree);
#define label_to_block(t) (label_to_block_fn (cfun, t))
extern void make_abnormal_goto_edges (basic_block, bool);
extern void cleanup_dead_labels (void);
extern void group_case_labels_stmt (gimple);
extern void group_case_labels (void);
extern void replace_uses_by (tree, tree);
extern basic_block single_noncomplex_succ (basic_block bb);
extern void notice_special_calls (gimple);
extern void clear_special_calls (void);
extern edge find_taken_edge (basic_block, tree);
extern void gimple_debug_bb (basic_block);
extern basic_block gimple_debug_bb_n (int);
extern void gimple_debug_cfg (int);
extern void gimple_dump_cfg (FILE *, int);
extern void dump_cfg_stats (FILE *);
extern void debug_cfg_stats (void);
extern bool stmt_can_make_abnormal_goto (gimple);
extern bool is_ctrl_stmt (gimple);
extern bool is_ctrl_altering_stmt (gimple);
extern bool simple_goto_p (gimple);
extern bool stmt_ends_bb_p (gimple);
extern void delete_tree_cfg_annotations (void);
extern gimple first_stmt (basic_block);
extern gimple last_stmt (basic_block);
extern gimple last_and_only_stmt (basic_block);
extern void verify_gimple_in_seq (gimple_seq);
extern void verify_gimple_in_cfg (struct function *);
extern tree gimple_block_label (basic_block);
extern void add_phi_args_after_copy_bb (basic_block);
extern void add_phi_args_after_copy (basic_block *, unsigned, edge);
extern bool gimple_duplicate_sese_region (edge, edge, basic_block *, unsigned,
basic_block *, bool);
extern bool gimple_duplicate_sese_tail (edge, edge, basic_block *, unsigned,
basic_block *);
extern void gather_blocks_in_sese_region (basic_block entry, basic_block exit,
vec<basic_block> *bbs_p);
extern basic_block move_sese_region_to_fn (struct function *, basic_block,
basic_block, tree);
extern void dump_function_to_file (tree, FILE *, int);
extern void debug_function (tree, int) ;
extern void print_loops_bb (FILE *, basic_block, int, int);
extern void print_loops (FILE *, int);
extern void debug (struct loop &ref);
extern void debug (struct loop *ptr);
extern void debug_verbose (struct loop &ref);
extern void debug_verbose (struct loop *ptr);
extern void debug_loops (int);
extern void debug_loop (struct loop *, int);
extern void debug_loop_num (unsigned, int);
void remove_edge_and_dominated_blocks (edge);
extern bool gimple_purge_dead_eh_edges (basic_block);
extern bool gimple_purge_all_dead_eh_edges (const_bitmap);
extern bool gimple_purge_dead_abnormal_call_edges (basic_block);
extern bool gimple_purge_all_dead_abnormal_call_edges (const_bitmap);
extern tree gimplify_build3 (gimple_stmt_iterator *, enum tree_code,
tree, tree, tree, tree);
extern tree gimplify_build2 (gimple_stmt_iterator *, enum tree_code,
tree, tree, tree);
extern tree gimplify_build1 (gimple_stmt_iterator *, enum tree_code,
tree, tree);
extern void extract_true_false_edges_from_block (basic_block, edge *, edge *);
extern unsigned int execute_fixup_cfg (void);
#endif /* _TREE_FLOW_H */
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