Home | History | Annotate | Line # | Download | only in gcc 
      1 /* Header file for High-level loop manipulation functions.
      2    Copyright (C) 2013-2022 Free Software Foundation, Inc.
      3 
      4 This file is part of GCC.
      5 
      6 GCC is free software; you can redistribute it and/or modify it under
      7 the terms of the GNU General Public License as published by the Free
      8 Software Foundation; either version 3, or (at your option) any later
      9 version.
     10 
     11 GCC is distributed in the hope that it will be useful, but WITHOUT ANY
     12 WARRANTY; without even the implied warranty of MERCHANTABILITY or
     13 FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
     14  for more details.
     15 
     16 You should have received a copy of the GNU General Public License
     17 along with GCC; see the file COPYING3.  If not see
     18 <http://www.gnu.org/licenses/>.  */
     19 
     20 #ifndef GCC_TREE_SSA_LOOP_MANIP_H
     21 #define GCC_TREE_SSA_LOOP_MANIP_H
     22 
     23 typedef void (*transform_callback)(class loop *, void *);
     24 
     25 extern void create_iv (tree, tree, tree, class loop *, gimple_stmt_iterator *,
     26 		       bool, tree *, tree *);
     27 extern void rewrite_into_loop_closed_ssa_1 (bitmap, unsigned, int,
     28 					    class loop *);
     29 extern void rewrite_into_loop_closed_ssa (bitmap, unsigned);
     30 extern void rewrite_virtuals_into_loop_closed_ssa (class loop *);
     31 extern void verify_loop_closed_ssa (bool, class loop * = NULL);
     32 
     33 static inline void
     34 checking_verify_loop_closed_ssa (bool verify_ssa_p, class loop *loop = NULL)
     35 {
     36   if (flag_checking)
     37     verify_loop_closed_ssa (verify_ssa_p, loop);
     38 }
     39 
     40 extern basic_block split_loop_exit_edge (edge, bool = false);
     41 extern basic_block ip_end_pos (class loop *);
     42 extern basic_block ip_normal_pos (class loop *);
     43 extern void standard_iv_increment_position (class loop *,
     44 					    gimple_stmt_iterator *, bool *);
     45 extern bool
     46 gimple_duplicate_loop_body_to_header_edge (class loop *, edge, unsigned int,
     47 					   sbitmap, edge, vec<edge> *, int);
     48 extern bool can_unroll_loop_p (class loop *loop, unsigned factor,
     49 			       class tree_niter_desc *niter);
     50 extern gcov_type niter_for_unrolled_loop (class loop *, unsigned);
     51 extern void tree_transform_and_unroll_loop (class loop *, unsigned,
     52 					    tree_niter_desc *,
     53 					    transform_callback, void *);
     54 extern void tree_unroll_loop (class loop *, unsigned, tree_niter_desc *);
     55 extern tree canonicalize_loop_ivs (class loop *, tree *, bool);
     56 extern unsigned int loop_invariant_motion_in_fun (function *, bool);
     57 
     58 
     59 #endif /* GCC_TREE_SSA_LOOP_MANIP_H */
     60